Pearl API update.

Moved user preferences (default type & hide passwords) into _ext_mpw.
Fixed an issue with JSON serialization of any values.
Made update check & background residency globally configurable
preferences saved in config.json.

.gitignore

@@ -7,6 +7,7 @@ Thumbs.db
 *.iml
 *.ipr
 *.iws
+out
 
 # Xcode IDE
 xcuserdata/

.gitlab-ci.yml

@@ -9,7 +9,7 @@ build_project:
     - "( ./lib/bin/build_libsodium-macos clean && ./lib/bin/build_libsodium-macos )"
     - "( ./lib/bin/build_libjson-c-macos clean && ./lib/bin/build_libjson-c-macos )"
     - "( cd ./platform-independent/c/cli && ./clean && targets=all ./build && ./mpw-tests && ./mpw-cli-tests )"
-    - "( cd ./gradle && ./gradlew --stacktrace clean test )"
+    - "( export JAVA_HOME=$(java_home -Fv 10 || java_home -Fv 9* ) && cd ./gradle && ./gradlew --stacktrace clean test )"
     - "( xcodebuild -workspace platform-darwin/MasterPassword.xcworkspace -configuration 'Test' -scheme 'MasterPassword iOS' -sdk iphonesimulator clean build )"
     - "( xcodebuild -workspace platform-darwin/MasterPassword.xcworkspace -configuration 'Test' -scheme 'MasterPassword macOS' clean build )"
   tags:

Dockerfile

@@ -1,9 +1,12 @@
-FROM alpine
+FROM debian:stable-slim
 
 # For i386
-#FROM i386/alpine
+#FROM i386/debian:stable-slim
 #ENTRYPOINT ["linux32", "--"]
 
-RUN apk add --no-cache git libtool automake autoconf make g++ bash openjdk8
+# https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=863199
+RUN mkdir -p /usr/share/man/man1
+
+RUN apt-get update && apt-get install -y default-jdk-headless git-core bash libtool automake autoconf make g++
 RUN git clone --depth=3 $(: --shallow-submodules) --recurse-submodules https://gitlab.com/MasterPassword/MasterPassword.git /mpw
 RUN cd /mpw/gradle && ./gradlew -i clean build

gradle/.idea/misc.xml

@@ -5,21 +5,31 @@
     <option name="myDefaultNotNull" value="javax.annotation.Nonnull" />
     <option name="myNullables">
       <value>
-        <list size="4">
+        <list size="9">
           <item index="0" class="java.lang.String" itemvalue="org.jetbrains.annotations.Nullable" />
           <item index="1" class="java.lang.String" itemvalue="javax.annotation.Nullable" />
           <item index="2" class="java.lang.String" itemvalue="edu.umd.cs.findbugs.annotations.Nullable" />
           <item index="3" class="java.lang.String" itemvalue="android.support.annotation.Nullable" />
+          <item index="4" class="java.lang.String" itemvalue="javax.annotation.CheckForNull" />
+          <item index="5" class="java.lang.String" itemvalue="androidx.annotation.Nullable" />
+          <item index="6" class="java.lang.String" itemvalue="org.checkerframework.checker.nullness.qual.Nullable" />
+          <item index="7" class="java.lang.String" itemvalue="org.checkerframework.checker.nullness.compatqual.NullableDecl" />
+          <item index="8" class="java.lang.String" itemvalue="org.checkerframework.checker.nullness.compatqual.NullableType" />
         </list>
       </value>
     </option>
     <option name="myNotNulls">
       <value>
-        <list size="4">
+        <list size="9">
           <item index="0" class="java.lang.String" itemvalue="org.jetbrains.annotations.NotNull" />
           <item index="1" class="java.lang.String" itemvalue="javax.annotation.Nonnull" />
           <item index="2" class="java.lang.String" itemvalue="edu.umd.cs.findbugs.annotations.NonNull" />
           <item index="3" class="java.lang.String" itemvalue="android.support.annotation.NonNull" />
+          <item index="4" class="java.lang.String" itemvalue="javax.validation.constraints.NotNull" />
+          <item index="5" class="java.lang.String" itemvalue="androidx.annotation.NonNull" />
+          <item index="6" class="java.lang.String" itemvalue="org.checkerframework.checker.nullness.qual.NonNull" />
+          <item index="7" class="java.lang.String" itemvalue="org.checkerframework.checker.nullness.compatqual.NonNullDecl" />
+          <item index="8" class="java.lang.String" itemvalue="org.checkerframework.checker.nullness.compatqual.NonNullType" />
         </list>
       </value>
     </option>

gradle/README.md

@@ -2,11 +2,11 @@ To build a release distribution:
 
 Desktop:
 
-    STORE_PW=$(mpw masterpassword.keystore) KEY_PW_DESKTOP=$(mpw masterpassword-desktop) gradle clean masterpassword-gui:shadowJar
+    STORE_PW=$(mpw masterpassword.keystore) KEY_PW_DESKTOP=$(mpw masterpassword-desktop) gradle --no-daemon clean masterpassword-gui:shadowJar
 
 Android:
 
-    STORE_PW=$(mpw masterpassword.keystore) KEY_PW_ANDROID=$(mpw masterpassword-android) gradle clean masterpassword-android:assembleRelease
+    STORE_PW=$(mpw masterpassword.keystore) KEY_PW_ANDROID=$(mpw masterpassword-android) gradle --no-daemon clean masterpassword-android:assembleRelease
 
 
 Note:

gradle/build.gradle

@@ -2,7 +2,7 @@ allprojects {
     apply plugin: 'findbugs'
 
     group = 'com.lyndir.masterpassword'
-    version = '2.7.1'
+    version = '2.7.10'
 
     tasks.withType( JavaCompile ) {
         options.encoding = 'UTF-8'

lib/bin/build_lib

@@ -32,8 +32,15 @@ PATH+=:/usr/local/bin
 needs() { _needs "$@"; }
 _needs() {
     local failed=0
-    for tool; do
+    for spec; do
-        hash "$tool" || { echo >&2 "Missing: $tool.  Please install this tool."; (( failed++ )); }
+        IFS=: read pkg tools <<< "$spec"
+        IFS=, read -a tools <<< "${tools:-$pkg}"
+        for tool in "${tools[@]}"; do
+            hash "$tool" 2>/dev/null && continue 2
+        done
+
+        echo >&2 "Missing: $pkg.  Please install this package."
+        (( failed++ ))
     done
 
     return $failed
@@ -51,15 +58,15 @@ _initialize() {
 #
 # Check if all tools needed for the default implementations are available.
 #
-# By default, this will check for `libtool` (for libtoolize), `automake` (for aclocal) and `autoconf` (for autoreconf).
+# By default, this will check for `libtool` (for libtoolize), `automake` (for aclocal), `autoconf` (for autoreconf) and make.
 initialize_needs() { _initialize_needs "$@"; }
 _initialize_needs() {
     if [[ $platform = windows ]]; then
         needs cmd
         export VSINSTALLDIR="${VSINSTALLDIR:-$(cd "$(cygpath -F 0x002a)/Microsoft Visual Studio"/*/*/Common7/.. && pwd)}"
-        [[ -e "$VSINSTALLDIR/Common7/Tools/VsMSBuildCmd.bat" ]] || { echo >&2 "Missing: msbuild.  Please install 'Build Tools for Visual Studio'."; return 1; }
+        [[ -e "$VSINSTALLDIR/Common7/Tools/VsMSBuildCmd.bat" ]] || { echo >&2 "Missing: msbuild.  Please install 'Build Tools for Visual Studio'.  See https://visualstudio.microsoft.com/downloads/?q=build+tools"; return 1; }
     else
-        needs libtool automake autoconf
+        needs libtool:libtoolize,glibtoolize automake autoconf make
     fi
 }
 
@@ -195,7 +202,7 @@ _target_build() {
 
     if [[ $platform = windows ]]; then
         # I cannot for the life of me figure out how to pass this command directly into cmd.
-        printf '"%%VSINSTALLDIR%%\Common7\Tools\VsMSBuildCmd.bat" && msbuild /t:Rebuild /p:Configuration=ReleaseDLL;Platform=%s;OutDir=%s' "$arch" "$(cygpath -w "${prefix##$PWD/}/$arch/")" > .build.bat
+        printf '"%%VSINSTALLDIR%%\Common7\Tools\VsMSBuildCmd.bat" && msbuild /t:Rebuild /p:Configuration=Release;Platform=%s;OutDir=%s' "$arch" "$(cygpath -w "${prefix##$PWD/}/$arch/")" > .build.bat
         cmd //c .build.bat
         rm -f .build.bat
     else
@@ -271,7 +278,10 @@ _finalize_merge() {
 # By default, this will run `make clean`.
 finalize_clean() { _finalize_clean "$@"; }
 _finalize_clean() {
+    if [[ $platform = windows ]]; then :
+    else
         [[ ! -e Makefile ]] || make -s clean
+    fi
 }
 
 # build <name> [<platform>]

lib/bin/build_libsodium-windows

@@ -1,4 +1,13 @@
 #!/usr/bin/env bash
 source "${BASH_SOURCE%/*}/build_lib"
 
+finalize_merge() {
+    local prefix=$1 platform=$2; shift 2
+    local archs=( "$@" )
+
+    cp -a "src/libsodium/include" "$prefix/out"
+    
+    _finalize_merge "$prefix" "$platform" "${archs[@]}"
+}
+
 build libsodium windows

platform-darwin/MasterPassword-iOS.xcodeproj/project.pbxproj

@@ -3917,7 +3917,7 @@
 			);
 			runOnlyForDeploymentPostprocessing = 0;
 			shellPath = "/bin/sh -e";
-			shellScript = "exec Scripts/genassets";
+			shellScript = "exec Scripts/genassets\n";
 			showEnvVarsInLog = 0;
 		};
 		DAB7AE4C1F3D56AD00C856B1 /* ShellScript */ = {

platform-darwin/Source/iOS/MPAnswersViewController.m

@@ -120,21 +120,21 @@
     MPSiteEntity *site = [self siteInContext:[MPiOSAppDelegate managedObjectContextForMainThreadIfReady]];
     if (indexPath.section == 0) {
         if (indexPath.item == 0) {
-            MPGlobalAnswersCell *cell = [MPGlobalAnswersCell dequeueCellFromTableView:tableView indexPath:indexPath];
+            MPGlobalAnswersCell *cell = [MPGlobalAnswersCell dequeueFromTableView:tableView indexPath:indexPath];
             [cell setSite:site];
             return cell;
         }
         if (indexPath.item == 1)
-            return [MPSendAnswersCell dequeueCellFromTableView:tableView indexPath:indexPath];
+            return [MPSendAnswersCell dequeueFromTableView:tableView indexPath:indexPath];
         if (indexPath.item == 2) {
-            MPMultipleAnswersCell *cell = [MPMultipleAnswersCell dequeueCellFromTableView:tableView indexPath:indexPath];
+            MPMultipleAnswersCell *cell = [MPMultipleAnswersCell dequeueFromTableView:tableView indexPath:indexPath];
             cell.accessoryType = self.multiple? UITableViewCellAccessoryCheckmark: UITableViewCellAccessoryNone;
             return cell;
         }
         Throw( @"Unsupported row index: %@", indexPath );
     }
 
-    MPAnswersQuestionCell *cell = [MPAnswersQuestionCell dequeueCellFromTableView:tableView indexPath:indexPath];
+    MPAnswersQuestionCell *cell = [MPAnswersQuestionCell dequeueFromTableView:tableView indexPath:indexPath];
     MPSiteQuestionEntity *question = nil;
     if ([site.questions count] > indexPath.item)
         question = site.questions[indexPath.item];

platform-darwin/Source/iOS/MPGuideViewController.m

@@ -150,7 +150,7 @@
 
 - (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath {
 
-    MPGuideStepCell *cell = [MPGuideStepCell dequeueCellFromCollectionView:collectionView indexPath:indexPath];
+    MPGuideStepCell *cell = [MPGuideStepCell dequeueFromCollectionView:collectionView indexPath:indexPath];
     cell.imageView.image = ((MPGuideStep *)self.steps[indexPath.item]).image;
     cell.contentView.frame = cell.bounds;
 

platform-darwin/Source/iOS/MPSitesViewController.m

@@ -179,7 +179,7 @@ typedef NS_OPTIONS( NSUInteger, MPPasswordsTips ) {
 
 - (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath {
 
-    MPSiteCell *cell = [MPSiteCell dequeueCellFromCollectionView:collectionView indexPath:indexPath];
+    MPSiteCell *cell = [MPSiteCell dequeueFromCollectionView:collectionView indexPath:indexPath];
     [cell setFuzzyGroups:self.fuzzyGroups];
     id item = self.dataSource[(NSUInteger)indexPath.section][(NSUInteger)indexPath.item];
     if ([item isKindOfClass:[MPSiteEntity class]])

platform-darwin/Source/iOS/MPStoreViewController.m

@@ -102,9 +102,9 @@ PearlEnum( MPDevelopmentFuelConsumption,
         SKProduct *product = content;
         MPStoreProductCell *cell;
         if ([product.productIdentifier isEqualToString:MPProductFuel])
-            cell = [MPStoreFuelProductCell dequeueCellFromTableView:tableView indexPath:indexPath];
+            cell = [MPStoreFuelProductCell dequeueFromTableView:tableView indexPath:indexPath];
         else
-            cell = [MPStoreProductCell dequeueCellFromTableView:tableView indexPath:indexPath];
+            cell = [MPStoreProductCell dequeueFromTableView:tableView indexPath:indexPath];
         [cell updateWithProduct:product transaction:self.transactions[product.productIdentifier]];
 
         return cell;

platform-independent/c/cli/build

@@ -1,10 +1,14 @@
 #!/usr/bin/env bash
 #
 # USAGE
-#   [targets='...'] [mpw_feature=0|1 ...] [CFLAGS='...'] [LDFLAGS='...'] ./build [cc arguments ...]
+#   [targets='...'] [mpw_feature=0|1 ...] [CFLAGS='...'] [LDFLAGS='...'] ./build [-v|-d|-h|--] [cc arguments ...]
 #
 #   By default, you should only need to run ./build
 #
+#   -v: verbose mode, outputs state information and compiler commands.
+#   -d: debug build, modifies default build flags to produce binaries best suited for debugging.
+#   -h: show this usage information.
+#
 #   You can customize the targets that are built using targets='...'. Use targets='all' to build all targets.
 #   By default, we only build the 'mpw' target.  
 #   See targets_all for all possible targets as well as the features they support and require.
@@ -27,29 +31,53 @@ set -e
 
 
 ### CONFIGURATION
-# Targets to build.
+verbose=0
+
+# Options
+while getopts :vdh opt; do
+    case $opt in
+        v)      verbose=1 ;;
+        d)      debug=1 ;;
+        h|?)    sed -n '/^[^#]/q;p' "${BASH_SOURCE##*/}"; exit ;;
+    esac
+done
+shift "$(( OPTIND - 1 ))"
+
+# Targets to build
 targets_all=(
     mpw                     # C CLI version of Master Password (needs: mpw_sodium, optional: mpw_color, mpw_json).
     mpw-bench               # C CLI Master Password benchmark utility (needs: mpw_sodium).
     mpw-tests               # C Master Password algorithm test suite (needs: mpw_sodium, mpw_xml).
 )
 targets_default='mpw'       # Override with: targets='...' ./build
+targets=${targets[*]:-$targets_default} 
 
-# Features.
+# Features
 mpw_sodium=${mpw_sodium:-1} # Implement crypto functions with sodium (depends on libsodium).
 mpw_json=${mpw_json:-1}     # Support JSON-based user configuration format (depends on libjson-c).
 mpw_color=${mpw_color:-1}   # Colorized identicon (depends on libncurses).
 mpw_xml=${mpw_xml:-1}       # XML parsing (depends on libxml2).
 
-# Default build flags.
+# Default build flags
-cflags=( -O3 $CFLAGS )
+cflags=( -O3 $CFLAGS ); unset CFLAGS
-ldflags=( $LDFLAGS )
+ldflags=( $LDFLAGS ); unset LDFLAGS
+if (( debug )); then
+    cflags+=( -O0 -g )
+fi
 
-# Version.
+# Version
 if { mpw_version=$(git describe --match '*-cli*' --long --dirty) || mpw_version=$(<VERSION); } 2>/dev/null; then
     cflags+=( -D"MP_VERSION=$mpw_version" )
 fi
-echo 2>&1 "Current mpw source version ${mpw_version:-<unknown>}..."
+echo "Current mpw source version ${mpw_version:-<unknown>}..."
+
+# Meta
+if (( verbose )); then
+    echo "mpw_sodium=${mpw_sodium}, mpw_json=${mpw_json}, mpw_color=${mpw_color}, mpw_xml=${mpw_xml}"
+    echo "CFLAGS: ${cflags[*]}"
+    echo "LDFLAGS: ${ldflags[*]}"
+    echo "targets: ${targets[*]}"
+fi
 
 
 ### TARGET: MPW
@@ -132,18 +160,20 @@ mpw-tests() {
 haslib() {
     cc -x c "${ldflags[@]}" -l"$1" -o /dev/null - <<< 'int main() { return 0; }' &>/dev/null
 }
-cc() {
+cc() (
-    if hash llvm-gcc 2>/dev/null; then
+    (( verbose )) && set -x
+
+    if { hash llvm-gcc; } 2>/dev/null; then
         llvm-gcc "$@"
-    elif hash gcc 2>/dev/null; then
+    elif { hash gcc; } 2>/dev/null; then
         gcc -std=c11 "$@"
-    elif hash clang 2>/dev/null; then
+    elif { hash clang; } 2>/dev/null; then
         clang "$@"
     else
         echo >&2 "Need a compiler.  Please install GCC or LLVM."
         exit 1
     fi
-}
+)
 
 
 ### DEPENDENCIES
@@ -156,7 +186,7 @@ use() {
             for lib in "$lib" "$@"; do
                 haslib "$lib" && ldflags+=( -l"$lib" )
             done
-            echo >&2 "INFO:     Enabled $option (lib$lib)."
+            echo "INFO:     Enabled $option (lib$lib)."
             return 0
 
         elif [[ $requisite == required ]]; then
@@ -174,7 +204,7 @@ use() {
         exit 1
 
     else
-        echo >&2 "INFO:     $option is supported but not enabled."
+        echo "INFO:     $option is supported but not enabled."
         return 1
     fi
 }
@@ -192,13 +222,13 @@ use_mpw_json() {
 }
 use_mpw_xml() {
     local requisite=$1
-    use mpw_xml "$requisite" xml2 && cflags+=( -D"MPW_XML=1" -I"/usr/include/libxml2" -I"/usr/local/include/libxml2" ) ||:
+    use mpw_xml "$requisite" xml2 && cflags+=( $(xml2-config --cflags) ) ldflags+=( $(xml2-config --libs) ) ||:
 }
 
 
 ### BUILD TARGETS
 for target in "${targets_all[@]}"; do
-    if [[ ${targets:-$targets_default} == 'all' || " ${targets:-$targets_default} " = *" $target "*  ]]; then
+    if [[ $targets == 'all' || " $targets " = *" $target "*  ]]; then
         echo
         echo "Building target: $target..."
         ( "$target" "$@" )

platform-independent/c/cli/src/mpw-cli-util.c

@@ -43,7 +43,7 @@ const char *mpw_getenv(const char *variableName) {
     return envBuf? mpw_strdup( envBuf ): NULL;
 }
 
-char *mpw_askpass(const char *prompt) {
+const char *mpw_askpass(const char *prompt) {
 
     const char *askpass = mpw_getenv( MP_ENV_askpass );
     if (!askpass)
@@ -74,7 +74,7 @@ char *mpw_askpass(const char *prompt) {
     }
 
     close( pipes[1] );
-    char *answer = mpw_read_fd( pipes[0] );
+    const char *answer = mpw_read_fd( pipes[0] );
     close( pipes[0] );
     int status;
     if (waitpid( pid, &status, 0 ) == ERR) {
@@ -86,7 +86,7 @@ char *mpw_askpass(const char *prompt) {
     if (WIFEXITED( status ) && WEXITSTATUS( status ) == EXIT_SUCCESS && answer && strlen( answer )) {
         // Remove trailing newline.
         if (answer[strlen( answer ) - 1] == '\n')
-            answer[strlen( answer ) - 1] = '\0';
+            mpw_replace_string( answer, mpw_strndup( answer, strlen( answer ) - 1 ) );
         return answer;
     }
 
@@ -97,13 +97,14 @@ char *mpw_askpass(const char *prompt) {
 static const char *_mpw_getline(const char *prompt, bool silent) {
 
     // Get answer from askpass.
-    char *answer = mpw_askpass( prompt );
+    const char *answer = mpw_askpass( prompt );
     if (answer)
         return answer;
 
 #if MPW_COLOR
     // Initialize a curses screen.
     SCREEN *screen = newterm( NULL, stderr, stdin );
+    if (screen) {
         start_color();
         init_pair( 1, COLOR_WHITE, COLOR_BLUE );
         init_pair( 2, COLOR_BLACK, COLOR_WHITE );
@@ -135,7 +136,8 @@ static const char *_mpw_getline(const char *prompt, bool silent) {
             noecho();
             result = mvgetnstr( rows / 2 + 1, (cols - 1) / 2, str, MPW_MAX_INPUT );
             echo();
-    } else {
+        }
+        else {
             mvprintw( rows / 2 + 1, (cols - (MPW_MAX_INPUT + 2)) / 2, "%*s", MPW_MAX_INPUT + 2, "" );
             refresh();
 
@@ -147,21 +149,22 @@ static const char *_mpw_getline(const char *prompt, bool silent) {
         delscreen( screen );
 
         return result == ERR? NULL: mpw_strndup( str, MPW_MAX_INPUT );
-#else
+    }
+#endif
+
     // Get password from terminal.
     fprintf( stderr, "%s ", prompt );
 
     size_t bufSize = 0;
-    ssize_t lineSize = getline( &answer, &bufSize, stdin );
+    ssize_t lineSize = getline( (char **)&answer, &bufSize, stdin );
     if (lineSize <= 1) {
         mpw_free_string( &answer );
         return NULL;
     }
 
     // Remove trailing newline.
-    answer[lineSize - 1] = '\0';
+    mpw_replace_string( answer, mpw_strndup( answer, (size_t)lineSize - 1 ) );
     return answer;
-#endif
 }
 
 const char *mpw_getline(const char *prompt) {
@@ -250,7 +253,7 @@ bool mpw_mkdirs(const char *filePath) {
     return success;
 }
 
-char *mpw_read_fd(int fd) {
+const char *mpw_read_fd(int fd) {
 
     char *buf = NULL;
     size_t blockSize = 4096, bufSize = 0, bufOffset = 0;
@@ -263,7 +266,7 @@ char *mpw_read_fd(int fd) {
     return buf;
 }
 
-char *mpw_read_file(FILE *file) {
+const char *mpw_read_file(FILE *file) {
 
     if (!file)
         return NULL;

platform-independent/c/cli/src/mpw-cli-util.h

@@ -36,7 +36,7 @@ const char *mpw_getenv(const char *variableName);
 
 /** Use the askpass program to prompt the user.
   * @return A newly allocated string or NULL if askpass is not supported or an error occurred. */
-char *mpw_askpass(const char *prompt);
+const char *mpw_askpass(const char *prompt);
 
 /** Ask the user a question.
   * @return A newly allocated string or NULL if an error occurred trying to read from the user. */
@@ -58,11 +58,11 @@ bool mpw_mkdirs(const char *filePath);
 
 /** Read until EOF from the given file descriptor.
   * @return A newly allocated string or NULL the read buffer couldn't be allocated. */
-char *mpw_read_fd(int fd);
+const char *mpw_read_fd(int fd);
 
 /** Read the file contents of a given file.
   * @return A newly allocated string or NULL the read buffer couldn't be allocated. */
-char *mpw_read_file(FILE *file);
+const char *mpw_read_file(FILE *file);
 
 /** Encode a visual fingerprint for a user.
   * @return A newly allocated string. */

platform-independent/c/cli/src/mpw-cli.c

@@ -476,8 +476,8 @@ void cli_user(Arguments *args, Operation *operation) {
 
     else {
         // Read file.
-        char *sitesInputData = mpw_read_file( sitesFile );
+        const char *sitesInputData = mpw_read_file( sitesFile );
-        if (ferror( sitesFile ))
+        if (!sitesInputData || ferror( sitesFile ))
             wrn( "Error while reading configuration file:\n  %s: %d", operation->sitesPath, ferror( sitesFile ) );
         fclose( sitesFile );
 

platform-independent/c/core/build.gradle

@@ -35,7 +35,7 @@ library {
         }
         withType( GccCompatibleToolChain ) {
             eachPlatform {
-                cppCompiler.withArguments { addAll( ['-x', 'c', '-O3', '-std=c11', '-Werror', '-DMPW_SODIUM=1'] ) }
+                cppCompiler.withArguments { addAll( ['-x', 'c', '-O3', '-Werror', '-DMPW_SODIUM=1'] ) }
             }
         }
     }
@@ -69,14 +69,14 @@ library {
                 }
 
                 // libjson-c
-                archive.dependsOn project.tasks.maybeCreate( "build_libjson-c-${system}", Exec ).configure {
+                /*archive.dependsOn project.tasks.maybeCreate( "build_libjson-c-${system}", Exec ).configure {
                     commandLine 'bash', "$rootDir/../lib/bin/build_libjson-c-${system}"
                     privateHeaders.from "$rootDir/../lib/libjson-c/build-${system}~/out/include"
                     add( linkLibraries.name, fileTree( "$rootDir/../lib/libjson-c/build-${system}~/out/lib" ) )
                 }
                 clean.dependsOn project.tasks.maybeCreate( "clean_libjson-c-${system}", Exec ).configure {
                     commandLine 'bash', "$rootDir/../lib/bin/build_libjson-c-${system}", 'clean'
-                }
+                }*/
             }
         }
     }

platform-independent/c/core/src/mpw-jni.c

@@ -7,7 +7,7 @@
 
 // TODO: We may need to zero the jbytes safely.
 
-JNIEXPORT jint JNI_OnLoad(JavaVM* vm, void* reserved) {
+JNIEXPORT jint JNICALL JNI_OnLoad(JavaVM* vm, void* reserved) {
     JNIEnv* env;
     if ((*vm)->GetEnv( vm, (void **)&env, JNI_VERSION_1_6 ) != JNI_OK)
         return -1;

platform-independent/c/core/src/mpw-marshal-util.c

@@ -35,10 +35,10 @@ char *mpw_get_token(const char **in, const char *eol, char *delim) {
     return token;
 }
 
-time_t mpw_mktime(
+time_t mpw_timegm(const char *time) {
-        const char *time) {
 
     // TODO: Support for parsing non-UTC time strings
+    // Parse time as a UTC timestamp, into a tm.
     struct tm tm = { .tm_isdst = -1 };
     if (time && sscanf( time, "%4d-%2d-%2dT%2d:%2d:%2dZ",
             &tm.tm_year, &tm.tm_mon, &tm.tm_mday,
@@ -46,8 +46,10 @@ time_t mpw_mktime(
         tm.tm_year -= 1900; // tm_year 0 = rfc3339 year  1900
         tm.tm_mon -= 1;     // tm_mon  0 = rfc3339 month 1
 
-        // mktime converts tm to local, setting tm_gmtoff; use it to offset the result back to UTC.
+        // mktime interprets tm as being local, we need to offset back to UTC (timegm/tm_gmtoff are non-standard).
-        return mktime( &tm ) + tm.tm_gmtoff;
+        time_t local_time = mktime( &tm ), local_dst = tm.tm_isdst > 0? 3600: 0;
+        time_t gmtoff = local_time + local_dst - mktime( gmtime( &local_time ) );
+        return local_time + gmtoff;
     }
 
     return false;

platform-independent/c/core/src/mpw-marshal-util.h

@@ -34,7 +34,7 @@
 char *mpw_get_token(
         const char **in, const char *eol, char *delim);
 /** Convert an RFC 3339 time string into epoch time. */
-time_t mpw_mktime(
+time_t mpw_timegm(
         const char *time);
 
 /// JSON parsing.

platform-independent/c/core/src/mpw-marshal.c

@@ -407,7 +407,7 @@ static void mpw_marshal_read_flat_info(
             if (strcmp( headerName, "Passwords" ) == 0)
                 info->redacted = strcmp( headerValue, "VISIBLE" ) != 0;
             if (strcmp( headerName, "Date" ) == 0)
-                info->date = mpw_mktime( headerValue );
+                info->date = mpw_timegm( headerValue );
 
             mpw_free_strings( &headerName, &headerValue, NULL );
             continue;
@@ -580,7 +580,7 @@ static MPMarshalledUser *mpw_marshal_read_flat(
                 return NULL;
             }
             MPAlgorithmVersion siteAlgorithm = (MPAlgorithmVersion)value;
-            time_t siteLastUsed = mpw_mktime( str_lastUsed );
+            time_t siteLastUsed = mpw_timegm( str_lastUsed );
             if (!siteLastUsed) {
                 *error = (MPMarshalError){ MPMarshalErrorIllegal, mpw_str( "Invalid site last used: %s: %s", siteName, str_lastUsed ) };
                 return NULL;
@@ -650,7 +650,7 @@ static void mpw_marshal_read_json_info(
     if (fileFormat < 1)
         return;
     info->redacted = mpw_get_json_boolean( json_file, "export.redacted", true );
-    info->date = mpw_mktime( mpw_get_json_string( json_file, "export.date", NULL ) );
+    info->date = mpw_timegm( mpw_get_json_string( json_file, "export.date", NULL ) );
 
     // Section: "user"
     info->algorithm = (MPAlgorithmVersion)mpw_get_json_int( json_file, "user.algorithm", MPAlgorithmVersionCurrent );
@@ -707,7 +707,7 @@ static MPMarshalledUser *mpw_marshal_read_json(
         *error = (MPMarshalError){ MPMarshalErrorIllegal, mpw_str( "Invalid user default type: %u", defaultType ) };
         return NULL;
     }
-    time_t lastUsed = mpw_mktime( str_lastUsed );
+    time_t lastUsed = mpw_timegm( str_lastUsed );
     if (!lastUsed) {
         *error = (MPMarshalError){ MPMarshalErrorIllegal, mpw_str( "Invalid user last used: %s", str_lastUsed ) };
         return NULL;
@@ -760,7 +760,7 @@ static MPMarshalledUser *mpw_marshal_read_json(
         MPResultType siteLoginType = (MPResultType)mpw_get_json_int( json_site.val, "login_type", MPResultTypeTemplateName );
         unsigned int siteUses = (unsigned int)mpw_get_json_int( json_site.val, "uses", 0 );
         str_lastUsed = mpw_get_json_string( json_site.val, "last_used", NULL );
-        time_t siteLastUsed = mpw_mktime( str_lastUsed );
+        time_t siteLastUsed = mpw_timegm( str_lastUsed );
         if (!siteLastUsed) {
             *error = (MPMarshalError){ MPMarshalErrorIllegal, mpw_str( "Invalid site last used: %s: %s", siteName, str_lastUsed ) };
             return NULL;

platform-independent/c/core/src/mpw-util.h

@@ -115,6 +115,8 @@ bool mpw_string_pushf(
 /** Push an integer onto a buffer.  reallocs the given buffer and appends the given integer. */
 bool mpw_push_int(
         uint8_t **buffer, size_t *bufferSize, const uint32_t pushInt);
+
+// These defines merely exist to force the void** cast (& do type-checking), since void** casts are not automatic.
 /** Reallocate the given buffer from the given size by adding the delta size.
   * On success, the buffer size pointer will be updated to the buffer's new size
   * and the buffer pointer may be updated to a new memory address.
@@ -124,26 +126,26 @@ bool mpw_push_int(
   * @param deltaSize The amount to increase the buffer's size by.
   * @return true if successful, false if reallocation failed.
   */
-#define mpw_realloc(buffer, bufferSize, deltaSize) \
+#define mpw_realloc( \
+        /* const void** */buffer, /* size_t* */bufferSize, /* const size_t */deltaSize) \
         ({ __typeof__(buffer) _b = buffer; const void *__b = *_b; (void)__b; __mpw_realloc( (const void **)_b, bufferSize, deltaSize ); })
-bool __mpw_realloc(const void **buffer, size_t *bufferSize, const size_t deltaSize);
-void mpw_zero(
-        void *buffer, size_t bufferSize);
 /** Free a buffer after zero'ing its contents, then set the reference to NULL. */
-#define mpw_free(buffer, bufferSize) \
+#define mpw_free( \
+        /* void** */buffer, /* size_t */ bufferSize) \
         ({ __typeof__(buffer) _b = buffer; const void *__b = *_b; (void)__b; __mpw_free( (void **)_b, bufferSize ); })
-bool __mpw_free(
-        void **buffer, size_t bufferSize);
 /** Free a string after zero'ing its contents, then set the reference to NULL. */
-#define mpw_free_string(string) \
+#define mpw_free_string( \
+        /* char** */string) \
         ({ __typeof__(string) _s = string; const char *__s = *_s; (void)__s; __mpw_free_string( (char **)_s ); })
-bool __mpw_free_string(
-        char **string);
 /** Free strings after zero'ing their contents, then set the references to NULL.  Terminate the va_list with NULL. */
-#define mpw_free_strings(strings, ...) \
+#define mpw_free_strings( \
+        /* char** */strings, ...) \
         ({ __typeof__(strings) _s = strings; const char *__s = *_s; (void)__s; __mpw_free_strings( (char **)_s, __VA_ARGS__ ); })
-bool __mpw_free_strings(
+/** Free a string after zero'ing its contents, then set the reference to the replacement string.
-        char **strings, ...);
+  * The replacement string is generated before the original is freed; it may be a derivative of the original. */
+#define mpw_replace_string( \
+        /* char* */string, /* char* */replacement) \
+        do { const char *replacement_ = replacement; mpw_free_string( &string ); string = replacement_; } while (0)
 #ifdef _MSC_VER
 #undef mpw_realloc
 #define mpw_realloc(buffer, bufferSize, deltaSize) \
@@ -158,6 +160,16 @@ bool __mpw_free_strings(
 #define mpw_free_strings(strings, ...) \
         __mpw_free_strings( (char **)strings, __VA_ARGS__ )
 #endif
+bool __mpw_realloc(
+        const void **buffer, size_t *bufferSize, const size_t deltaSize);
+bool __mpw_free(
+        void **buffer, size_t bufferSize);
+bool __mpw_free_string(
+        char **string);
+bool __mpw_free_strings(
+        char **strings, ...);
+void mpw_zero(
+        void *buffer, size_t bufferSize);
 
 //// Cryptographic functions.
 

platform-independent/java/algorithm/src/main/java/com/lyndir/masterpassword/MPMasterKey.java

@@ -66,6 +66,7 @@ public class MPMasterKey {
      *
      * @throws MPKeyUnavailableException {@link #invalidate()} has been called on this object.
      */
+    @Nonnull
     public byte[] getKeyID(final MPAlgorithm algorithm)
             throws MPKeyUnavailableException, MPAlgorithmException {
 
@@ -87,6 +88,7 @@ public class MPMasterKey {
         return !invalidated;
     }
 
+    @Nonnull
     private byte[] masterKey(final MPAlgorithm algorithm)
             throws MPKeyUnavailableException, MPAlgorithmException {
         Preconditions.checkArgument( masterPassword.length > 0 );
@@ -109,6 +111,7 @@ public class MPMasterKey {
         return masterKey;
     }
 
+    @Nonnull
     private byte[] siteKey(final String siteName, final MPAlgorithm algorithm, final UnsignedInteger siteCounter,
                            final MPKeyPurpose keyPurpose, @Nullable final String keyContext)
             throws MPKeyUnavailableException, MPAlgorithmException {
@@ -141,13 +144,20 @@ public class MPMasterKey {
      *                    In the case of {@link MPResultTypeClass#Stateful} types, the result of
      *                    {@link #siteState(String, MPAlgorithm, UnsignedInteger, MPKeyPurpose, String, MPResultType, String)}.
      *
+     * @return {@code null} if the result type is missing a required parameter.
+     *
      * @throws MPKeyUnavailableException {@link #invalidate()} has been called on this object.
+     * @throws MPAlgorithmException      An internal system or algorithm error has occurred.
      */
+    @Nullable
     public String siteResult(final String siteName, final MPAlgorithm algorithm, final UnsignedInteger siteCounter,
                              final MPKeyPurpose keyPurpose, @Nullable final String keyContext,
                              final MPResultType resultType, @Nullable final String resultParam)
             throws MPKeyUnavailableException, MPAlgorithmException {
 
+        if ((resultType.getTypeClass() == MPResultTypeClass.Stateful) && (resultParam == null))
+            return null;
+
         byte[] masterKey = masterKey( algorithm );
         byte[] siteKey   = siteKey( siteName, algorithm, siteCounter, keyPurpose, keyContext );
 
@@ -175,7 +185,9 @@ public class MPMasterKey {
      *                    {@link #siteResult(String, MPAlgorithm, UnsignedInteger, MPKeyPurpose, String, MPResultType, String)}.
      *
      * @throws MPKeyUnavailableException {@link #invalidate()} has been called on this object.
+     * @throws MPAlgorithmException      An internal system or algorithm error has occurred.
      */
+    @Nonnull
     public String siteState(final String siteName, final MPAlgorithm algorithm, final UnsignedInteger siteCounter,
                             final MPKeyPurpose keyPurpose, @Nullable final String keyContext,
                             final MPResultType resultType, final String resultParam)

platform-independent/java/algorithm/src/main/java/com/lyndir/masterpassword/MPResultType.java

@@ -41,7 +41,7 @@ public enum MPResultType {
     /**
      * 16: pg^VMAUBk5x3p%HP%i4=
      */
-    GeneratedMaximum( "maximum", "Maximum Security", "pg^VMAUBk5x3p%HP%i4=", "20 characters, contains symbols.", //
+    GeneratedMaximum( "maximum", "Maximum Security", "pg^VMAUBk5x3p%HP%i4=", "20 characters, contains symbols", //
                       ImmutableList.of( new MPTemplate( "anoxxxxxxxxxxxxxxxxx" ),
                                         new MPTemplate( "axxxxxxxxxxxxxxxxxno" ) ), //
                       MPResultTypeClass.Template, 0x0 ),
@@ -49,7 +49,7 @@ public enum MPResultType {
     /**
      * 17: BiroYena8:Kixa
      */
-    GeneratedLong( "long", "Long Password", "BiroYena8:Kixa", "Copy-friendly, 14 characters, contains symbols.", //
+    GeneratedLong( "long", "Long Password", "BiroYena8:Kixa", "Copy-friendly, 14 characters, contains symbols", //
                    ImmutableList.of( new MPTemplate( "CvcvnoCvcvCvcv" ), new MPTemplate( "CvcvCvcvnoCvcv" ),
                                      new MPTemplate( "CvcvCvcvCvcvno" ), new MPTemplate( "CvccnoCvcvCvcv" ),
                                      new MPTemplate( "CvccCvcvnoCvcv" ), new MPTemplate( "CvccCvcvCvcvno" ),
@@ -66,7 +66,7 @@ public enum MPResultType {
     /**
      * 18: BirSuj0-
      */
-    GeneratedMedium( "medium", "Medium Password", "BirSuj0-", "Copy-friendly, 8 characters, contains symbols.", //
+    GeneratedMedium( "medium", "Medium Password", "BirSuj0-", "Copy-friendly, 8 characters, contains symbols", //
                      ImmutableList.of( new MPTemplate( "CvcnoCvc" ),
                                        new MPTemplate( "CvcCvcno" ) ), //
                      MPResultTypeClass.Template, 0x2 ),
@@ -74,14 +74,14 @@ public enum MPResultType {
     /**
      * 19: Bir8
      */
-    GeneratedShort( "short", "Short Password", "Bir8", "Copy-friendly, 4 characters, no symbols.", //
+    GeneratedShort( "short", "Short Password", "Bir8", "Copy-friendly, 4 characters, no symbols", //
                     ImmutableList.of( new MPTemplate( "Cvcn" ) ), //
                     MPResultTypeClass.Template, 0x3 ),
 
     /**
      * 20: pO98MoD0
      */
-    GeneratedBasic( "basic", "Basic Password", "pO98MoD0", "8 characters, no symbols.", //
+    GeneratedBasic( "basic", "Basic Password", "pO98MoD0", "8 characters, no symbols", //
                     ImmutableList.of( new MPTemplate( "aaanaaan" ),
                                       new MPTemplate( "aannaaan" ),
                                       new MPTemplate( "aaannaaa" ) ), //
@@ -90,44 +90,44 @@ public enum MPResultType {
     /**
      * 21: 2798
      */
-    GeneratedPIN( "pin", "PIN Code", "2798", "4 numbers.", //
+    GeneratedPIN( "pin", "PIN Code", "2798", "4 numbers", //
                   ImmutableList.of( new MPTemplate( "nnnn" ) ), //
                   MPResultTypeClass.Template, 0x5 ),
 
     /**
      * 30: birsujano
      */
-    GeneratedName( "name", "Name", "birsujano", "9 letter name.", //
+    GeneratedName( "name", "Name", "birsujano", "9 letter name", //
                    ImmutableList.of( new MPTemplate( "cvccvcvcv" ) ), //
                    MPResultTypeClass.Template, 0xE ),
 
     /**
      * 31: bir yennoquce fefi
      */
-    GeneratedPhrase( "phrase", "Phrase", "bir yennoquce fefi", "20 character sentence.", //
+    GeneratedPhrase( "phrase", "Phrase", "bir yennoquce fefi", "20 character sentence", //
                      ImmutableList.of( new MPTemplate( "cvcc cvc cvccvcv cvc" ),
                                        new MPTemplate( "cvc cvccvcvcv cvcv" ),
                                        new MPTemplate( "cv cvccv cvc cvcvccv" ) ), //
                      MPResultTypeClass.Template, 0xF ),
 
     /**
-     * 1056: Custom saved password.
+     * 1056: Custom saved value.
      */
-    StoredPersonal( "personal", "Saved Password", null, "AES-encrypted, exportable.", //
+    StoredPersonal( "personal", "Saved", null, "AES-encrypted, exportable", //
                     ImmutableList.<MPTemplate>of(), //
                     MPResultTypeClass.Stateful, 0x0, MPSiteFeature.ExportContent ),
 
     /**
-     * 2081: Custom saved password that should not be exported from the device.
+     * 2081: Custom saved value that should not be exported from the device.
      */
-    StoredDevicePrivate( "device", "Private Password", null, "AES-encrypted, not exported.", //
+    StoredDevicePrivate( "device", "Private", null, "AES-encrypted, not exported", //
                          ImmutableList.<MPTemplate>of(), //
                          MPResultTypeClass.Stateful, 0x1, MPSiteFeature.DevicePrivate ),
 
     /**
      * 4160: Derive a unique binary key.
      */
-    DeriveKey( "key", "Binary Key", null, "Encryption key.", //
+    DeriveKey( "key", "Binary Key", null, "Encryption key", //
                ImmutableList.<MPTemplate>of(), //
                MPResultTypeClass.Derive, 0x0, MPSiteFeature.Alternative );
 

platform-independent/java/algorithm/src/main/java/com/lyndir/masterpassword/impl/Native.java

@@ -18,14 +18,14 @@
 
 package com.lyndir.masterpassword.impl;
 
-import static com.lyndir.lhunath.opal.system.util.ObjectUtils.*;
-
 import com.google.common.base.Joiner;
 import com.google.common.collect.ImmutableList;
+import com.google.common.collect.ImmutableSet;
 import com.google.common.io.ByteStreams;
 import com.lyndir.lhunath.opal.system.logging.Logger;
 import java.io.*;
-import java.util.Locale;
+import java.util.*;
+import java.util.function.Predicate;
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
 
@@ -43,30 +43,35 @@ public final class Native {
     private static final String NATIVES_PATH        = "lib";
 
     @SuppressWarnings({ "HardcodedFileSeparator", "LoadLibraryWithNonConstantString" })
-    public static void load(final Class<?> context, final String name) {
+    public static boolean load(final Class<?> context, final String name) {
 
         // Try to load the library using the native system.
         try {
             System.loadLibrary( name );
-            return;
+            return true;
         }
         catch (@SuppressWarnings("ErrorNotRethrown") final UnsatisfiedLinkError ignored) {
         }
 
         // Try to find and open a stream to the packaged library resource.
-        try {
         String             library          = System.mapLibraryName( name );
         int                libraryDot       = library.lastIndexOf( EXTENSION_SEPARATOR );
         String             libraryName      = (libraryDot > 0)? library.substring( 0, libraryDot ): library;
         String             libraryExtension = (libraryDot > 0)? library.substring( libraryDot ): ".lib";
-            String      libraryResource  = getLibraryResource( library );
+
+        @Nullable
+        File libraryFile = null;
+        Set<String> libraryResources = getLibraryResources( library );
+        for (final String libraryResource : libraryResources) {
+            try {
                 InputStream libraryStream = context.getResourceAsStream( libraryResource );
-            if (libraryStream == null)
+                if (libraryStream == null) {
-                throw new IllegalStateException(
+                    logger.dbg( "No resource for library: %s", libraryResource );
-                        "Library: " + name + " (" + libraryResource + "), not found in class loader for: " + context );
+                    continue;
+                }
 
                 // Write the library resource to a temporary file.
-            File             libraryFile       = File.createTempFile( libraryName, libraryExtension );
+                libraryFile = File.createTempFile( libraryName, libraryExtension );
                 FileOutputStream libraryFileStream = new FileOutputStream( libraryFile );
                 try {
                     libraryFile.deleteOnExit();
@@ -79,35 +84,120 @@ public final class Native {
 
                 // Load the library from the temporary file.
                 System.load( libraryFile.getAbsolutePath() );
+                return true;
             }
-        catch (final IOException e) {
+            catch (@SuppressWarnings("ErrorNotRethrown") final IOException | UnsatisfiedLinkError e) {
-            throw new IllegalStateException( "Couldn't extract library: " + name, e );
+                logger.dbg( e, "Couldn't load library: %s", libraryResource );
+
+                if (libraryFile != null)
+                    if (libraryFile.exists() && !libraryFile.delete())
+                        logger.wrn( "Couldn't clean up library file: %s", libraryFile );
+                libraryFile = null;
             }
         }
 
+        return false;
+    }
+
     @Nonnull
-    private static String getLibraryResource(final String library) {
+    private static Set<String> getLibraryResources(final String library) {
-        String system       = ifNotNullElse( System.getProperty( "os.name" ), "linux" ).toLowerCase( Locale.ROOT );
-        String architecture = ifNotNullElse( System.getProperty( "os.arch" ), "x86" ).toLowerCase( Locale.ROOT );
-
         // Standardize system naming in accordance with masterpassword-core.
-        if (system.contains( "windows" ))
+        Sys system = Sys.findCurrent();
-            system = "windows";
-        else if (system.contains( "mac os x" ) || system.contains( "darwin" ) || system.contains( "osx" ))
-            system = "macos";
-        else
-            system = "linux";
 
         // Standardize architecture naming in accordance with masterpassword-core.
-        if (ImmutableList.of( "arm", "arm-v7", "armv7", "arm32" ).contains( architecture ))
+        Collection<Arch> architectures = new LinkedHashSet<>();
-            architecture = "arm";
+        architectures.add( Arch.findCurrent() );
-        else if (architecture.startsWith( "arm" ))
+        architectures.addAll( Arrays.asList( Arch.values() ) );
-            architecture = "arm64";
-        else if (ImmutableList.of( "x86_64", "amd64", "x64", "x86-64" ).contains( architecture ))
-            architecture = "x86_64";
-        else
-            architecture = "x86";
 
-        return Joiner.on( RESOURCE_SEPARATOR ).join( "", NATIVES_PATH, system, architecture, library );
+        ImmutableSet.Builder<String> resources = ImmutableSet.builder();
+        for (final Arch arch : architectures)
+            resources.add( Joiner.on( RESOURCE_SEPARATOR ).join( "", NATIVES_PATH, system, arch, library ) );
+
+        return resources.build();
+    }
+
+    private enum Sys implements Predicate<String> {
+        windows {
+            @Override
+            public boolean test(final String system) {
+                return system.contains( "windows" );
+            }
+        },
+        macos {
+            @Override
+            public boolean test(final String system) {
+                return system.contains( "mac os x" ) || system.contains( "darwin" ) || system.contains( "osx" );
+            }
+        },
+        linux {
+            @Override
+            public boolean test(final String system) {
+                return system.contains( "linux" );
+            }
+        };
+
+        @Nonnull
+        public static Sys findCurrent() {
+            return find( System.getProperty( "os.name" ) );
+        }
+
+        @Nonnull
+        public static Sys find(@Nullable String name) {
+            if (name != null) {
+                name = name.toLowerCase( Locale.ROOT );
+
+                for (final Sys sys : values())
+                    if (sys.test( name ))
+                        return sys;
+            }
+
+            return linux;
+        }
+    }
+
+
+    private enum Arch implements Predicate<String> {
+        arm {
+            @Override
+            public boolean test(final String architecture) {
+                return ImmutableList.of( "arm", "arm-v7", "armv7", "arm32" ).contains( architecture );
+            }
+        },
+        arm64 {
+            @Override
+            public boolean test(final String architecture) {
+                return architecture.startsWith( "arm" ) && !arm.test( architecture );
+            }
+        },
+        x86_64 {
+            @Override
+            public boolean test(final String architecture) {
+                return ImmutableList.of( "x86_64", "amd64", "x64", "x86-64" ).contains( architecture );
+            }
+        },
+        x86 {
+            @Override
+            public boolean test(final String architecture) {
+                return ImmutableList.of( "x86", "i386", "i686" ).contains( architecture );
+            }
+        };
+
+        @Nonnull
+        public static Arch findCurrent() {
+            return find( System.getProperty( "os.arch" ) );
+        }
+
+        @Nonnull
+        public static Arch find(@Nullable String name) {
+            if (name != null) {
+                name = name.toLowerCase( Locale.ROOT );
+
+                for (final Arch arch : values())
+                    if (arch.test( name ))
+                        return arch;
+            }
+
+            return x86;
+        }
     }
 }

platform-independent/java/algorithm/src/main/java/com/lyndir/masterpassword/util/Utilities.java

@@ -19,6 +19,21 @@ public final class Utilities {
         return consumer.apply( value );
     }
 
+    @Nonnull
+    public static <T> T ifNotNullElse(@Nullable final T value, @Nonnull final T nullValue) {
+        if (value == null)
+            return nullValue;
+
+        return value;
+    }
+
+    public static String ifNotNullOrEmptyElse(@Nullable final String value, @Nonnull final String emptyValue) {
+        if ((value == null) || value.isEmpty())
+            return emptyValue;
+
+        return value;
+    }
+
     @Nonnull
     public static <T, R> R ifNotNullElse(@Nullable final T value, final Function<T, R> consumer, @Nonnull final R nullValue) {
         if (value == null)

platform-independent/java/gui/build.gradle

@@ -11,6 +11,7 @@ dependencies {
     implementation group: 'com.lyndir.lhunath.opal', name: 'opal-system', version: '1.7-p2'
     implementation group: 'ch.qos.logback', name: 'logback-classic', version: '1.1.2'
     implementation group: 'com.yuvimasory', name: 'orange-extensions', version: '1.3.0'
+    implementation group: 'com.github.tulskiy', name: 'jkeymaster', version: '1.2'
 
     compile project( ':masterpassword-model' )
 }
@@ -30,7 +31,7 @@ shadowJar {
                          storepass: System.getenv( 'STORE_PW' ),
                          keypass: System.getenv( 'KEY_PW_DESKTOP' ),
                          preservelastmodified: 'true',
-                         destdir: '.' )
+                         signedJar: "${rootDir}/../public/site/${project.name}-${project.version}.jar" )
     }
 }
 

platform-independent/java/gui/src/main/java/com/lyndir/masterpassword/gui/GUI.java

@@ -1,26 +0,0 @@
-package com.lyndir.masterpassword.gui;
-
-import com.lyndir.lhunath.opal.system.logging.Logger;
-import com.lyndir.masterpassword.gui.util.Platform;
-import com.lyndir.masterpassword.gui.util.Res;
-import com.lyndir.masterpassword.gui.view.MasterPasswordFrame;
-
-
-/**
- * @author lhunath, 2018-07-28
- */
-public class GUI {
-
-    private static final Logger logger = Logger.get( GUI.class );
-
-    private final MasterPasswordFrame frame = new MasterPasswordFrame();
-
-    public GUI() {
-        Platform.get().installAppForegroundHandler( this::open );
-        Platform.get().installAppReopenHandler( this::open );
-    }
-
-    public void open() {
-        Res.ui( () -> frame.setVisible( true ) );
-    }
-}

platform-independent/java/gui/src/main/java/com/lyndir/masterpassword/gui/MPGuiConfig.java

@@ -19,22 +19,40 @@
 package com.lyndir.masterpassword.gui;
 
 import com.lyndir.lhunath.opal.system.util.ConversionUtils;
-import com.lyndir.masterpassword.model.MPConstants;
+import com.lyndir.masterpassword.model.MPConfig;
+import com.lyndir.masterpassword.model.MPModelConstants;
 
 
 /**
  * @author lhunath, 2014-08-31
  */
 @SuppressWarnings("CallToSystemGetenv")
-public class Config {
+public class MPGuiConfig extends MPConfig {
 
-    private static final Config instance = new Config();
+    public static MPGuiConfig get() {
-
+        return get( MPGuiConfig.class );
-    public static Config get() {
-        return instance;
     }
 
+    Boolean checkForUpdates;
+    Boolean stayResident;
+
     public boolean checkForUpdates() {
-        return ConversionUtils.toBoolean( System.getenv( MPConstants.env_checkUpdates ) ).orElse( true );
+        return (checkForUpdates != null)? checkForUpdates:
+                ConversionUtils.toBoolean( System.getenv( MPModelConstants.env_checkUpdates ) ).orElse( true );
+    }
+
+    public void setCheckForUpdates(final boolean checkForUpdates) {
+        this.checkForUpdates = checkForUpdates;
+        MasterPassword.get().updateCheck();
+        setChanged();
+    }
+
+    public boolean stayResident() {
+        return (stayResident != null)? stayResident: false;
+    }
+
+    public void setStayResident(final boolean stayResident) {
+        this.stayResident = stayResident;
+        setChanged();
     }
 }

platform-independent/java/gui/src/main/java/com/lyndir/masterpassword/gui/MPGuiConstants.java

@@ -0,0 +1,14 @@
+package com.lyndir.masterpassword.gui;
+
+import java.awt.event.InputEvent;
+import java.awt.event.KeyEvent;
+import javax.swing.*;
+
+
+/**
+ * @author lhunath, 2018-07-31
+ */
+public final class MPGuiConstants {
+
+    public static final KeyStroke ui_hotkey = KeyStroke.getKeyStroke( KeyEvent.VK_P, InputEvent.CTRL_DOWN_MASK | InputEvent.META_DOWN_MASK );
+}

platform-independent/java/gui/src/main/java/com/lyndir/masterpassword/gui/MasterPassword.java

@@ -24,7 +24,11 @@ import com.google.common.base.Charsets;
 import com.google.common.io.ByteSource;
 import com.lyndir.lhunath.opal.system.logging.Logger;
 import com.lyndir.lhunath.opal.system.util.ObjectUtils;
+import com.lyndir.masterpassword.gui.util.*;
+import com.lyndir.masterpassword.gui.view.MasterPasswordFrame;
 import com.lyndir.masterpassword.model.MPUser;
+import com.tulskiy.keymaster.common.Provider;
+import java.awt.*;
 import java.io.IOException;
 import java.io.InputStream;
 import java.net.*;
@@ -43,11 +47,13 @@ public final class MasterPassword {
 
     @SuppressWarnings("UnusedDeclaration")
     private static final Logger         logger   = Logger.get( MasterPassword.class );
-
     private static final MasterPassword instance = new MasterPassword();
 
+    private final Provider             keyMaster = Provider.getCurrentProvider( true );
     private final Collection<Listener> listeners = new CopyOnWriteArraySet<>();
 
+    @Nullable
+    private MasterPasswordFrame frame;
     @Nullable
     private MPUser<?>           activeUser;
 
@@ -55,12 +61,13 @@ public final class MasterPassword {
         return instance;
     }
 
-    public boolean addListener(final Listener listener) {
+    public void addListener(final Listener listener) {
-        return listeners.add( listener );
+        if (listeners.add( listener ))
+            listener.onUserSelected( activeUser );
     }
 
-    public boolean removeListener(final Listener listener) {
+    public void removeListener(final Listener listener) {
-        return listeners.remove( listener );
+        listeners.remove( listener );
     }
 
     public void activateUser(final MPUser<?> user) {
@@ -72,9 +79,49 @@ public final class MasterPassword {
             listener.onUserSelected( activeUser );
     }
 
-    private static void checkUpdate() {
+    @Nullable
+    public String version() {
+        return MasterPassword.class.getPackage().getImplementationVersion();
+    }
+
+    public void open() {
+        Res.ui( () -> {
+            if (frame == null)
+                frame = new MasterPasswordFrame();
+
+            frame.setAlwaysOnTop( true );
+            frame.setVisible( true );
+            frame.setExtendedState( Frame.NORMAL );
+            Platform.get().requestForeground();
+            frame.setAlwaysOnTop( false );
+        } );
+    }
+
+    public static void main(final String... args) {
+        //Thread.setDefaultUncaughtExceptionHandler(
+        //        (t, e) -> logger.bug( e, "Uncaught: %s", e.getLocalizedMessage() ) );
+
+        // Set the system look & feel, if available.
         try {
-            String implementationVersion = MasterPassword.class.getPackage().getImplementationVersion();
+            UIManager.setLookAndFeel( UIManager.getSystemLookAndFeelClassName() );
+        }
+        catch (final UnsupportedLookAndFeelException | ClassNotFoundException | InstantiationException | IllegalAccessException ignored) {
+        }
+
+        // Create and open the UI.
+        get().open();
+
+        // UI features.
+        get().updateResidence();
+        get().updateCheck();
+    }
+
+    public void updateCheck() {
+        if (!MPGuiConfig.get().checkForUpdates())
+            return;
+
+        try {
+            String implementationVersion = version();
             String latestVersion = new ByteSource() {
                 @Override
                 public InputStream openStream()
@@ -86,16 +133,14 @@ public final class MasterPassword {
                 }
             }.asCharSource( Charsets.UTF_8 ).readFirstLine();
 
-            if ((implementationVersion != null) && (latestVersion != null) &&
+            if ((implementationVersion != null) && !implementationVersion.equalsIgnoreCase( latestVersion )) {
-                !implementationVersion.equalsIgnoreCase( latestVersion )) {
                 logger.inf( "Implementation: <%s>", implementationVersion );
                 logger.inf( "Latest        : <%s>", latestVersion );
                 logger.wrn( "You are not running the current official version.  Please update from:%n%s",
                             "https://masterpassword.app/masterpassword-gui.jar" );
-                JOptionPane.showMessageDialog( null,
+                JOptionPane.showMessageDialog( null, Components.linkLabel( strf(
-                                               strf( "A new version of Master Password is available.%n "
+                        "A new version of Master Password is available."
-                                                     + "Please download the latest version from %s",
+                        + "<p>Please download the latest version from <a href='https://masterpassword.app'>https://masterpassword.app</a>." ) ),
-                                                     "https://masterpassword.app" ),
                                                "Update Available", JOptionPane.INFORMATION_MESSAGE );
             }
         }
@@ -104,26 +149,15 @@ public final class MasterPassword {
         }
     }
 
-    public static void main(final String... args) {
+    public void updateResidence() {
-        //        Thread.setDefaultUncaughtExceptionHandler(
+        Platform.get().installAppForegroundHandler( get()::open );
-        //                (t, e) -> logger.bug( e, "Uncaught: %s", e.getLocalizedMessage() ) );
+        Platform.get().installAppReopenHandler( get()::open );
-
+        keyMaster.register( MPGuiConstants.ui_hotkey, hotKey -> get().open() );
-        // Try and set the system look & feel, if available.
-        try {
-            UIManager.setLookAndFeel( UIManager.getSystemLookAndFeelClassName() );
-        }
-        catch (final UnsupportedLookAndFeelException | ClassNotFoundException | InstantiationException | IllegalAccessException ignored) {
-        }
-
-        // Check online to see if this version has been superseded.
-        if (Config.get().checkForUpdates())
-            checkUpdate();
-
-        // Create a platform-specific GUI and open it.
-        new GUI().open();
     }
 
+    @SuppressWarnings("InterfaceMayBeAnnotatedFunctional")
     public interface Listener {
+
         void onUserSelected(@Nullable MPUser<?> user);
     }
 }

platform-independent/java/gui/src/main/java/com/lyndir/masterpassword/gui/model/MPIncognitoQuestion.java

@@ -31,17 +31,7 @@ import javax.annotation.Nullable;
  */
 public class MPIncognitoQuestion extends MPBasicQuestion {
 
-    private final MPIncognitoSite site;
-
     public MPIncognitoQuestion(final MPIncognitoSite site, final String keyword, @Nullable final MPResultType type) {
-        super( keyword, ifNotNullElse( type, site.getAlgorithm().mpw_default_answer_type() ) );
+        super( site, keyword, ifNotNullElse( type, site.getAlgorithm().mpw_default_answer_type() ) );
-
-        this.site = site;
-    }
-
-    @Nonnull
-    @Override
-    public MPIncognitoSite getSite() {
-        return site;
     }
 }

platform-independent/java/gui/src/main/java/com/lyndir/masterpassword/gui/model/MPIncognitoSite.java

@@ -40,4 +40,10 @@ public class MPIncognitoSite extends MPBasicSite<MPIncognitoUser, MPIncognitoQue
                            @Nullable final MPResultType resultType, @Nullable final MPResultType loginType) {
         super( user, siteName, (algorithm == null)? user.getAlgorithm(): algorithm, counter, resultType, loginType );
     }
+
+    @Nonnull
+    @Override
+    public MPIncognitoQuestion addQuestion(final String keyword) {
+        return addQuestion( new MPIncognitoQuestion( this, keyword, null ) );
+    }
 }

platform-independent/java/gui/src/main/java/com/lyndir/masterpassword/gui/model/MPIncognitoUser.java

@@ -20,6 +20,7 @@ package com.lyndir.masterpassword.gui.model;
 
 import com.lyndir.masterpassword.MPAlgorithm;
 import com.lyndir.masterpassword.model.impl.MPBasicUser;
+import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
 
 
@@ -38,6 +39,7 @@ public class MPIncognitoUser extends MPBasicUser<MPIncognitoSite> {
         return null;
     }
 
+    @Nonnull
     @Override
     public MPIncognitoSite addSite(final String siteName) {
         return addSite( new MPIncognitoSite( this, siteName ) );

platform-independent/java/gui/src/main/java/com/lyndir/masterpassword/gui/model/MPNewQuestion.java

@@ -0,0 +1,15 @@
+package com.lyndir.masterpassword.gui.model;
+
+import com.lyndir.masterpassword.model.MPSite;
+import com.lyndir.masterpassword.model.impl.MPBasicQuestion;
+
+
+/**
+ * @author lhunath, 2018-07-27
+ */
+public class MPNewQuestion extends MPBasicQuestion {
+
+    public MPNewQuestion(final MPSite<?> site, final String keyword) {
+        super( site, keyword, site.getAlgorithm().mpw_default_answer_type() );
+    }
+}

platform-independent/java/gui/src/main/java/com/lyndir/masterpassword/gui/model/MPNewSite.java

@@ -1,7 +1,8 @@
 package com.lyndir.masterpassword.gui.model;
 
 import com.lyndir.masterpassword.model.*;
-import com.lyndir.masterpassword.model.impl.*;
+import com.lyndir.masterpassword.model.impl.MPBasicSite;
+import javax.annotation.Nonnull;
 
 
 /**
@@ -12,4 +13,20 @@ public class MPNewSite extends MPBasicSite<MPUser<?>, MPQuestion> {
     public MPNewSite(final MPUser<?> user, final String siteName) {
         super( user, siteName );
     }
+
+    @Nonnull
+    @Override
+    public MPQuestion addQuestion(final String keyword) {
+        throw new UnsupportedOperationException( "Cannot add a question to a site that hasn't been created yet." );
+    }
+
+    public <S extends MPSite<?>> S addTo(final MPUser<S> user) {
+        S site = user.addSite( getSiteName() );
+        site.setAlgorithm( getAlgorithm() );
+        site.setCounter( getCounter() );
+        site.setLoginType( getLoginType() );
+        site.setResultType( getResultType() );
+
+        return site;
+    }
 }

platform-independent/java/gui/src/main/java/com/lyndir/masterpassword/gui/util/CollectionListModel.java

@@ -1,6 +1,11 @@
 package com.lyndir.masterpassword.gui.util;
 
+import static com.google.common.base.Preconditions.*;
+
+import com.google.common.base.Predicates;
 import com.google.common.collect.ImmutableList;
+import com.google.common.collect.Iterables;
+import com.lyndir.lhunath.opal.system.logging.Logger;
 import java.util.*;
 import java.util.function.Consumer;
 import javax.annotation.Nullable;
@@ -16,27 +21,25 @@ import javax.swing.event.ListSelectionListener;
 public class CollectionListModel<E> extends AbstractListModel<E>
         implements ComboBoxModel<E>, ListSelectionListener, Selectable<E, CollectionListModel<E>> {
 
+    private static final Logger logger = Logger.get( CollectionListModel.class );
+
     private final List<E>     model = new LinkedList<>();
     @Nullable
-    private       E           selectedItem;
     private       JList<E>    list;
     @Nullable
+    private       E           selectedItem;
+    @Nullable
     private       Consumer<E> selectionConsumer;
 
     @SafeVarargs
-    public static <E> CollectionListModel<E> copy(final E... elements) {
+    public CollectionListModel(final E... elements) {
-        return copy( Arrays.asList( elements ) );
+        this( Arrays.asList( elements ) );
     }
 
-    public static <E> CollectionListModel<E> copy(final Collection<? extends E> elements) {
+    public CollectionListModel(final Collection<? extends E> elements) {
-        CollectionListModel<E> model = new CollectionListModel<>();
+        model.addAll( elements );
-        synchronized (model) {
+        selectedItem = getElementAt( 0 );
-            model.model.addAll( elements );
+        fireIntervalAdded( this, 0, model.size() );
-            model.selectedItem = model.getElementAt( 0 );
-            model.fireIntervalAdded( model, 0, model.model.size() );
-
-            return model;
-        }
     }
 
     @Override
@@ -44,8 +47,8 @@ public class CollectionListModel<E> extends AbstractListModel<E>
         return model.size();
     }
 
-    @Override
     @Nullable
+    @Override
     public synchronized E getElementAt(final int index) {
         return (index < model.size())? model.get( index ): null;
     }
@@ -56,16 +59,11 @@ public class CollectionListModel<E> extends AbstractListModel<E>
      * This operation will mutate the internal model to reflect the given model.
      * The given model will remain untouched and independent from this object.
      */
-    @SuppressWarnings({ "unchecked", "SuspiciousToArrayCall" })
+    @SuppressWarnings({ "Guava", "AssignmentToForLoopParameter" })
-    public synchronized void set(final Collection<? extends E> elements) {
+    public synchronized void set(final Iterable<? extends E> elements) {
-        set( (E[]) elements.toArray( new Object[0] ) );
-    }
-
-    @SuppressWarnings("AssignmentToForLoopParameter")
-    public synchronized void set(final E... elements) {
         ListIterator<E> oldIt = model.listIterator();
         for (int from = 0; oldIt.hasNext(); ++from) {
-            int to = Arrays.binarySearch( elements, oldIt.next() );
+            int to = Iterables.indexOf( elements, Predicates.equalTo( oldIt.next() ) );
 
             if (to != from) {
                 oldIt.remove();
@@ -74,24 +72,37 @@ public class CollectionListModel<E> extends AbstractListModel<E>
             }
         }
 
-        for (int to = 0; to < elements.length; ++to) {
+        int to = 0;
-            E newSite = elements[to];
+        for (final E newSite : elements) {
-
             if ((to >= model.size()) || !Objects.equals( model.get( to ), newSite )) {
                 model.add( to, newSite );
                 fireIntervalAdded( this, to, to );
             }
+
+            ++to;
         }
 
         if ((selectedItem == null) || !model.contains( selectedItem ))
-            setSelectedItem( getElementAt( 0 ) );
+            selectItem( getElementAt( 0 ) );
+    }
+
+    @SafeVarargs
+    public final synchronized void set(final E... elements) {
+        set( ImmutableList.copyOf( elements ) );
     }
 
     @Override
-    @SuppressWarnings({ "unchecked", "SuspiciousMethodCalls" })
+    @Deprecated
-    public synchronized void setSelectedItem(@Nullable final Object newSelectedItem) {
+    @SuppressWarnings("unchecked")
-        if (!Objects.equals( selectedItem, newSelectedItem )) {
+    public synchronized void setSelectedItem(@Nullable final Object/* E */ newSelectedItem) {
-            selectedItem = (E) newSelectedItem;
+        selectItem( (E) newSelectedItem );
+    }
+
+    public synchronized CollectionListModel<E> selectItem(@Nullable final E newSelectedItem) {
+        if (Objects.equals( selectedItem, newSelectedItem ))
+            return this;
+
+        selectedItem = newSelectedItem;
 
         fireContentsChanged( this, -1, -1 );
         //noinspection ObjectEquality
@@ -100,7 +111,7 @@ public class CollectionListModel<E> extends AbstractListModel<E>
 
         if (selectionConsumer != null)
             selectionConsumer.accept( selectedItem );
-        }
+        return this;
     }
 
     @Nullable
@@ -131,7 +142,7 @@ public class CollectionListModel<E> extends AbstractListModel<E>
     @Override
     public synchronized CollectionListModel<E> selection(@Nullable final E selectedItem, @Nullable final Consumer<E> selectionConsumer) {
         this.selectionConsumer = null;
-        setSelectedItem( selectedItem );
+        selectItem( selectedItem );
 
         return selection( selectionConsumer );
     }
@@ -139,7 +150,7 @@ public class CollectionListModel<E> extends AbstractListModel<E>
     @Override
     public synchronized void valueChanged(final ListSelectionEvent event) {
         //noinspection ObjectEquality
-        if (!event.getValueIsAdjusting() && (event.getSource() == list) && (list.getModel() == this)) {
+        if (!event.getValueIsAdjusting() && (event.getSource() == list) && (checkNotNull( list ).getModel() == this)) {
             selectedItem = list.getSelectedValue();
 
             if (selectionConsumer != null)

platform-independent/java/gui/src/main/java/com/lyndir/masterpassword/gui/util/Components.java

@@ -18,10 +18,13 @@
 
 package com.lyndir.masterpassword.gui.util;
 
+import com.google.common.base.Strings;
+import com.lyndir.lhunath.opal.system.logging.Logger;
 import java.awt.*;
 import java.awt.event.ActionEvent;
 import java.awt.event.ActionListener;
 import java.io.File;
+import java.net.URISyntaxException;
 import java.util.Arrays;
 import java.util.Collection;
 import java.util.function.Consumer;
@@ -30,9 +33,9 @@ import javax.annotation.Nullable;
 import javax.swing.*;
 import javax.swing.border.Border;
 import javax.swing.border.CompoundBorder;
-import javax.swing.event.DocumentEvent;
+import javax.swing.event.HyperlinkEvent;
-import javax.swing.event.DocumentListener;
+import javax.swing.text.*;
-import javax.swing.text.DefaultFormatterFactory;
+import org.jetbrains.annotations.NonNls;
 
 
 /**
@@ -41,8 +44,10 @@ import javax.swing.text.DefaultFormatterFactory;
 @SuppressWarnings({ "SerializableStoresNonSerializable", "serial" })
 public abstract class Components {
 
-    public static final float TEXT_SIZE_HEADING = 19f;
+    private static final Logger logger = Logger.get( Components.class );
-    public static final float TEXT_SIZE_CONTROL = 13f;
+
+    public static final int TEXT_SIZE_HEADING = 19;
+    public static final int TEXT_SIZE_CONTROL = 13;
     public static final int SIZE_MARGIN       = 12;
     public static final int SIZE_PADDING      = 8;
 
@@ -96,6 +101,7 @@ public abstract class Components {
 
     public static int showDialog(@Nullable final Component owner, @Nullable final String title, final JOptionPane pane) {
         JDialog dialog = pane.createDialog( owner, title );
+        dialog.setMinimumSize( new Dimension( 520, 0 ) );
         dialog.setModalityType( Dialog.ModalityType.DOCUMENT_MODAL );
         showDialog( dialog );
 
@@ -107,9 +113,14 @@ public abstract class Components {
         if (options == null)
             return (selectedValue instanceof Integer)? (Integer) selectedValue: JOptionPane.CLOSED_OPTION;
 
+        try {
             int option = Arrays.binarySearch( options, selectedValue );
             return (option < 0)? JOptionPane.CLOSED_OPTION: option;
         }
+        catch (final ClassCastException ignored) {
+            return JOptionPane.CLOSED_OPTION;
+        }
+    }
 
     @Nullable
     public static File showLoadDialog(@Nullable final Component owner, final String title) {
@@ -139,7 +150,6 @@ public abstract class Components {
                                       title, Dialog.ModalityType.DOCUMENT_MODAL );
         dialog.setMinimumSize( new Dimension( 320, 0 ) );
         dialog.setLocationRelativeTo( owner );
-        dialog.setLocationByPlatform( true );
         dialog.setContentPane( content );
 
         return showDialog( dialog );
@@ -151,13 +161,18 @@ public abstract class Components {
         dialog.getRootPane().putClientProperty( "Window.style", "small" );
         dialog.pack();
 
+        dialog.setLocationByPlatform( true );
         dialog.setVisible( true );
 
         return dialog;
     }
 
     public static JTextField textField() {
-        return new JTextField() {
+        return textField( null );
+    }
+
+    public static JTextField textField(@Nullable final Document document) {
+        return new JTextField( document, null, 0 ) {
             {
                 setBorder( BorderFactory.createCompoundBorder( BorderFactory.createLineBorder( Res.colors().controlBorder(), 1, true ),
                                                                BorderFactory.createEmptyBorder( 4, 4, 4, 4 ) ) );
@@ -167,41 +182,30 @@ public abstract class Components {
 
             @Override
             public Dimension getMaximumSize() {
-                return new Dimension( Integer.MAX_VALUE, getPreferredSize().height );
+                return new Dimension( Integer.MAX_VALUE, Integer.MAX_VALUE );
             }
         };
     }
 
-    public static JTextField textField(@Nullable final String text, @Nullable final Consumer<String> selection) {
+    public static JTextField textField(@Nullable final String text, @Nullable final Consumer<String> change) {
-        return new JTextField( text ) {
+        return textField( new DocumentModel( new PlainDocument() ).selection( text, change ).getDocument() );
+    }
+
+    public static JTextArea textArea() {
+        return new JTextArea() {
             {
                 setBorder( BorderFactory.createCompoundBorder( BorderFactory.createLineBorder( Res.colors().controlBorder(), 1, true ),
                                                                BorderFactory.createEmptyBorder( 4, 4, 4, 4 ) ) );
                 setFont( Res.fonts().valueFont( TEXT_SIZE_CONTROL ) );
                 setAlignmentX( LEFT_ALIGNMENT );
 
-                if (selection != null)
+                setLineWrap( true );
-                    getDocument().addDocumentListener( new DocumentListener() {
+                setRows( 3 );
-                        @Override
-                        public void insertUpdate(final DocumentEvent e) {
-                            selection.accept( getText() );
-                        }
-
-                        @Override
-                        public void removeUpdate(final DocumentEvent e) {
-                            selection.accept( getText() );
-                        }
-
-                        @Override
-                        public void changedUpdate(final DocumentEvent e) {
-                            selection.accept( getText() );
-                        }
-                    } );
             }
 
             @Override
             public Dimension getMaximumSize() {
-                return new Dimension( Integer.MAX_VALUE, getPreferredSize().height );
+                return new Dimension( Integer.MAX_VALUE, Integer.MAX_VALUE );
             }
         };
     }
@@ -224,20 +228,27 @@ public abstract class Components {
     public static <E> JList<E> list(final ListModel<E> model, final Function<E, String> valueTransformer) {
         return new JList<E>( model ) {
             {
+                setAlignmentX( LEFT_ALIGNMENT );
                 setFont( Res.fonts().valueFont( TEXT_SIZE_CONTROL ) );
                 setCellRenderer( new DefaultListCellRenderer() {
                     @Override
                     @SuppressWarnings({ "unchecked", "SerializableStoresNonSerializable" })
                     public Component getListCellRendererComponent(final JList<?> list, final Object value, final int index,
                                                                   final boolean isSelected, final boolean cellHasFocus) {
+                        String label = valueTransformer.apply( (E) value );
                         super.getListCellRendererComponent(
-                                list, valueTransformer.apply( (E) value ), index, isSelected, cellHasFocus );
+                                list, Strings.isNullOrEmpty( label )? " ": label, index, isSelected, cellHasFocus );
                         setBorder( BorderFactory.createEmptyBorder( 2, 4, 2, 4 ) );
 
                         return this;
                     }
                 } );
-                setAlignmentX( LEFT_ALIGNMENT );
+                Dimension cellSize = getCellRenderer().getListCellRendererComponent( this, null, 0, false, false ).getPreferredSize();
+                setFixedCellWidth( cellSize.width );
+                setFixedCellHeight( cellSize.height );
+
+                if (model instanceof CollectionListModel)
+                    ((CollectionListModel<E>) model).registerList( this );
             }
 
             @Override
@@ -293,7 +304,6 @@ public abstract class Components {
     public static JButton button(final Action action) {
         return new JButton( action ) {
             {
-                setFont( Res.fonts().controlFont( TEXT_SIZE_CONTROL ) );
                 setAlignmentX( LEFT_ALIGNMENT );
 
                 if (getText() == null) {
@@ -370,7 +380,7 @@ public abstract class Components {
     public static JLabel heading(@Nullable final String heading, final int horizontalAlignment) {
         return new JLabel( heading, horizontalAlignment ) {
             {
-                setFont( Res.fonts().controlFont( TEXT_SIZE_HEADING ).deriveFont( Font.BOLD ) );
+                setFont( getFont().deriveFont( Font.BOLD, TEXT_SIZE_HEADING ) );
                 setAlignmentX( LEFT_ALIGNMENT );
             }
 
@@ -405,7 +415,6 @@ public abstract class Components {
     public static JLabel label(@Nullable final String label, final int horizontalAlignment) {
         return new JLabel( label, horizontalAlignment ) {
             {
-                setFont( Res.fonts().controlFont( TEXT_SIZE_CONTROL ) );
                 setAlignmentX( LEFT_ALIGNMENT );
             }
 
@@ -417,11 +426,18 @@ public abstract class Components {
     }
 
     public static JCheckBox checkBox(final String label) {
+        return checkBox( label, false, null );
+    }
+
+    public static JCheckBox checkBox(final String label, final boolean selected, @Nullable final Consumer<Boolean> selectionConsumer) {
         return new JCheckBox( label ) {
             {
-                setFont( Res.fonts().controlFont( TEXT_SIZE_CONTROL ) );
                 setBackground( null );
                 setAlignmentX( LEFT_ALIGNMENT );
+                setSelected( selected );
+
+                if (selectionConsumer != null)
+                    addItemListener( e -> selectionConsumer.accept( isSelected() ) );
             }
         };
     }
@@ -433,17 +449,17 @@ public abstract class Components {
 
     public static <E> JComboBox<E> comboBox(final E[] values, final Function<E, String> valueTransformer,
                                             @Nullable final E selectedItem, @Nullable final Consumer<E> selectionConsumer) {
-        return comboBox( CollectionListModel.copy( values ).selection( selectedItem, selectionConsumer ), valueTransformer );
+        return comboBox( new CollectionListModel<>( values ).selection( selectedItem, selectionConsumer ), valueTransformer );
     }
 
     public static <E> JComboBox<E> comboBox(final Collection<E> values, final Function<E, String> valueTransformer,
                                             @Nullable final Consumer<E> selectionConsumer) {
-        return comboBox( CollectionListModel.copy( values ).selection( selectionConsumer ), valueTransformer );
+        return comboBox( new CollectionListModel<>( values ).selection( selectionConsumer ), valueTransformer );
     }
 
     public static <E> JComboBox<E> comboBox(final Collection<E> values, final Function<E, String> valueTransformer,
                                             @Nullable final E selectedItem, @Nullable final Consumer<E> selectionConsumer) {
-        return comboBox( CollectionListModel.copy( values ).selection( selectedItem, selectionConsumer ), valueTransformer );
+        return comboBox( new CollectionListModel<>( values ).selection( selectedItem, selectionConsumer ), valueTransformer );
     }
 
     public static <E> JComboBox<E> comboBox(final ComboBoxModel<E> model, final Function<E, String> valueTransformer) {
@@ -456,8 +472,9 @@ public abstract class Components {
                     @SuppressWarnings({ "unchecked", "SerializableStoresNonSerializable" })
                     public Component getListCellRendererComponent(final JList<?> list, final Object value, final int index,
                                                                   final boolean isSelected, final boolean cellHasFocus) {
+                        String label = valueTransformer.apply( (E) value );
                         super.getListCellRendererComponent(
-                                list, valueTransformer.apply( (E) value ), index, isSelected, cellHasFocus );
+                                list, Strings.isNullOrEmpty( label )? " ": label, index, isSelected, cellHasFocus );
                         setBorder( BorderFactory.createEmptyBorder( 0, 4, 0, 4 ) );
 
                         return this;
@@ -474,6 +491,24 @@ public abstract class Components {
         };
     }
 
+    public static JEditorPane linkLabel(@NonNls final String html) {
+        return new JEditorPane( "text/html", "<html><body style='width:640;font-family:sans-serif'>" + html ) {
+            {
+                setOpaque( false );
+                setEditable( false );
+                addHyperlinkListener( event -> {
+                    if (event.getEventType() == HyperlinkEvent.EventType.ACTIVATED)
+                        try {
+                            Platform.get().open( event.getURL().toURI() );
+                        }
+                        catch (final URISyntaxException e) {
+                            logger.err( e, "After triggering hyperlink: %s", event );
+                        }
+                } );
+            }
+        };
+    }
+
     public static class GradientPanel extends JPanel {
 
         @Nullable

platform-independent/java/gui/src/main/java/com/lyndir/masterpassword/gui/util/ConsumingTrigger.java

@@ -0,0 +1,27 @@
+package com.lyndir.masterpassword.gui.util;
+
+import java.util.function.Consumer;
+import javax.annotation.Nullable;
+
+
+/**
+ * @author lhunath, 2018-08-23
+ */
+public class ConsumingTrigger<T> implements Consumer<T> {
+
+    private final Runnable trigger;
+
+    @Nullable
+    private T value;
+
+    public ConsumingTrigger(final Runnable trigger) {
+        this.trigger = trigger;
+    }
+
+    @Override
+    public void accept(final T t) {
+        value = t;
+
+        trigger.run();
+    }
+}

platform-independent/java/gui/src/main/java/com/lyndir/masterpassword/gui/util/DocumentModel.java

@@ -0,0 +1,98 @@
+package com.lyndir.masterpassword.gui.util;
+
+import com.lyndir.lhunath.opal.system.logging.Logger;
+import java.util.function.Consumer;
+import javax.annotation.Nonnull;
+import javax.annotation.Nullable;
+import javax.swing.event.DocumentEvent;
+import javax.swing.event.DocumentListener;
+import javax.swing.text.BadLocationException;
+import javax.swing.text.Document;
+
+
+/**
+ * @author lhunath, 2018-08-24
+ */
+public class DocumentModel implements Selectable<String, DocumentModel> {
+
+    private static final Logger logger = Logger.get( DocumentModel.class );
+
+    private final Document document;
+
+    @Nullable
+    private DocumentListener documentListener;
+
+    public DocumentModel(final Document document) {
+        this.document = document;
+    }
+
+    @Nonnull
+    public Document getDocument() {
+        return document;
+    }
+
+    @Nullable
+    public String getText() {
+        try {
+            return (document.getLength() > 0)? document.getText( 0, document.getLength() ): null;
+        }
+        catch (final BadLocationException e) {
+            logger.wrn( "While getting text for model", e );
+            return null;
+        }
+    }
+
+    public void setText(@Nullable final String text) {
+        try {
+            if (document.getLength() > 0)
+                document.remove( 0, document.getLength() );
+
+            if (text != null)
+                document.insertString( 0, text, null );
+        }
+        catch (final BadLocationException e) {
+            logger.err( "While setting text for model", e );
+        }
+    }
+
+    @Override
+    public DocumentModel selection(@Nullable final Consumer<String> selectionConsumer) {
+        if (documentListener != null)
+            document.removeDocumentListener( documentListener );
+
+        if (selectionConsumer != null)
+            document.addDocumentListener( documentListener = new DocumentListener() {
+                @Override
+                public void insertUpdate(final DocumentEvent e) {
+                    trigger();
+                }
+
+                @Override
+                public void removeUpdate(final DocumentEvent e) {
+                    trigger();
+                }
+
+                @Override
+                public void changedUpdate(final DocumentEvent e) {
+                    trigger();
+                }
+
+                private void trigger() {
+                    selectionConsumer.accept( getText() );
+                }
+            } );
+
+        return this;
+    }
+
+    @Override
+    public DocumentModel selection(@Nullable final String selectedItem, @Nullable final Consumer<String> selectionConsumer) {
+        setText( selectedItem );
+        selection( selectionConsumer );
+
+        if (selectionConsumer != null)
+            selectionConsumer.accept( selectedItem );
+
+        return this;
+    }
+}

platform-independent/java/gui/src/main/java/com/lyndir/masterpassword/gui/util/Res.java

@@ -20,17 +20,15 @@ package com.lyndir.masterpassword.gui.util;
 
 import static com.lyndir.lhunath.opal.system.util.StringUtils.*;
 
-import com.google.common.collect.Maps;
 import com.google.common.io.Resources;
 import com.google.common.util.concurrent.*;
 import com.lyndir.lhunath.opal.system.logging.Logger;
 import com.lyndir.masterpassword.MPIdenticon;
-import com.lyndir.masterpassword.gui.SwingExecutorService;
 import java.awt.*;
 import java.io.IOException;
-import java.lang.ref.SoftReference;
-import java.util.Map;
 import java.util.concurrent.*;
+import java.util.function.Consumer;
+import javax.annotation.Nullable;
 import javax.swing.*;
 import org.jetbrains.annotations.NonNls;
 import org.joda.time.*;
@@ -80,6 +78,15 @@ public abstract class Res {
         ui( true, job );
     }
 
+    public static <V> void ui(final ListenableFuture<V> future, final Consumer<V> job) {
+        Futures.addCallback( future, new FailableCallback<V>( logger ) {
+            @Override
+            public void onSuccess(@Nullable final V result) {
+                job.accept( result );
+            }
+        }, uiExecutor() );
+    }
+
     public static void ui(final boolean immediate, final Runnable job) {
         uiExecutor( immediate ).execute( job );
     }
@@ -138,6 +145,10 @@ public abstract class Res {
             return icon( "media/icon_import.png" );
         }
 
+        public Icon help() {
+            return icon( "media/icon_help.png" );
+        }
+
         public Icon export() {
             return icon( "media/icon_export.png" );
         }
@@ -146,6 +157,14 @@ public abstract class Res {
             return icon( "media/icon_settings.png" );
         }
 
+        public Icon edit() {
+            return icon( "media/icon_edit.png" );
+        }
+
+        public Icon key() {
+            return icon( "media/icon_key.png" );
+        }
+
         public Icon avatar(final int index) {
             return icon( strf( "media/avatar-%d.png", index % avatars() ) );
         }
@@ -162,88 +181,67 @@ public abstract class Res {
 
     public static final class Fonts {
 
-        public Font emoticonsFont(final float size) {
+        public Font emoticonsFont(final int size) {
-            return emoticonsRegular().deriveFont( size );
+            return MPFont.emoticonsRegular.get( size );
         }
 
-        public Font controlFont(final float size) {
+        public Font controlFont(final int size) {
-            return exoRegular().deriveFont( size );
+            return MPFont.exoRegular.get( size );
         }
 
-        public Font valueFont(final float size) {
+        public Font valueFont(final int size) {
-            return sourceSansProRegular().deriveFont( size );
+            return MPFont.sourceSansProRegular.get( size );
         }
 
-        public Font bigValueFont(final float size) {
+        public Font bigValueFont(final int size) {
-            return sourceSansProBlack().deriveFont( size );
+            return MPFont.sourceSansProBlack.get( size );
         }
 
-        public Font emoticonsRegular() {
+        private enum MPFont {
-            return font( "fonts/Emoticons-Regular.otf" );
+            emoticonsRegular( "Emoticons", "fonts/Emoticons-Regular.otf" ),
+            sourceCodeProRegular( "Source Code Pro", "fonts/SourceCodePro-Regular.otf" ),
+            sourceCodeProBlack( "Source Code Pro Bold", "fonts/SourceCodePro-Bold.otf" ),
+            sourceSansProRegular( "Source Sans Pro", "fonts/SourceSansPro-Regular.otf" ),
+            sourceSansProBlack( "Source Sans Pro Bold", "fonts/SourceSansPro-Bold.otf" ),
+            exoBold( "Exo 2.0 Bold", "fonts/Exo2.0-Bold.otf" ),
+            exoExtraBold( "Exo 2.0 Extra Bold", "fonts/Exo2.0-ExtraBold.otf" ),
+            exoRegular( "Exo 2.0", "fonts/Exo2.0-Regular.otf" ),
+            exoThin( "Exo 2.0 Thin", "fonts/Exo2.0-Thin.otf" ),
+            arimoBold( "Arimo Bold", "fonts/Arimo-Bold.ttf" ),
+            arimoBoldItalic( "Arimo Bold Italic", "fonts/Arimo-BoldItalic.ttf" ),
+            arimoItalic( "Arimo Italic", "fonts/Arimo-Italic.ttf" ),
+            arimoRegular( "Arimo", "fonts/Arimo-Regular.ttf" );
+
+            private final String  fontName;
+            private final String  resourceName;
+            private       boolean registered;
+
+            MPFont(final String fontName, final String resourceName) {
+                this.fontName = fontName;
+                this.resourceName = resourceName;
             }
 
-        public Font sourceCodeProRegular() {
+            Font get(final int size) {
-            return font( "fonts/SourceCodePro-Regular.otf" );
+                return get( Font.PLAIN, size );
             }
 
-        public Font sourceCodeProBlack() {
+            Font get(final int style, final int size) {
-            return font( "fonts/SourceCodePro-Bold.otf" );
+                if (!registered)
+                    register();
+
+                return new Font( fontName, style, size );
             }
 
-        public Font sourceSansProRegular() {
+            private void register() {
-            return font( "fonts/SourceSansPro-Regular.otf" );
-        }
-
-        public Font sourceSansProBlack() {
-            return font( "fonts/SourceSansPro-Bold.otf" );
-        }
-
-        public Font exoBold() {
-            return font( "fonts/Exo2.0-Bold.otf" );
-        }
-
-        public Font exoExtraBold() {
-            return font( "fonts/Exo2.0-ExtraBold.otf" );
-        }
-
-        public Font exoRegular() {
-            return font( "fonts/Exo2.0-Regular.otf" );
-        }
-
-        public Font exoThin() {
-            return font( "fonts/Exo2.0-Thin.otf" );
-        }
-
-        public Font arimoBold() {
-            return font( "fonts/Arimo-Bold.ttf" );
-        }
-
-        public Font arimoBoldItalic() {
-            return font( "fonts/Arimo-BoldItalic.ttf" );
-        }
-
-        public Font arimoItalic() {
-            return font( "fonts/Arimo-Italic.ttf" );
-        }
-
-        public Font arimoRegular() {
-            return font( "fonts/Arimo-Regular.ttf" );
-        }
-
-        private static Font font(@NonNls final String fontResourceName) {
-            Map<String, SoftReference<Font>> fontsByResourceName = Maps.newHashMap();
-            SoftReference<Font>              fontRef             = fontsByResourceName.get( fontResourceName );
-            Font                             font                = (fontRef == null)? null: fontRef.get();
-            if (font == null)
                 try {
-                    fontsByResourceName.put( fontResourceName, new SoftReference<>(
+                    Font font = Font.createFont( Font.TRUETYPE_FONT, Resources.getResource( resourceName ).openStream() );
-                            font = Font.createFont( Font.TRUETYPE_FONT, Resources.getResource( fontResourceName ).openStream() ) ) );
+                    GraphicsEnvironment.getLocalGraphicsEnvironment().registerFont( font );
+                    registered = true;
                 }
                 catch (final FontFormatException | IOException e) {
                     throw logger.bug( e );
                 }
-
+            }
-            return font;
         }
     }
 

platform-independent/java/gui/src/main/java/com/lyndir/masterpassword/gui/util/Selectable.java

@@ -11,5 +11,5 @@ public interface Selectable<E, T> {
 
     T selection(@Nullable Consumer<E> selectionConsumer);
 
-    T selection(E selectedItem, @Nullable Consumer<E> selectionConsumer);
+    T selection(@Nullable E selectedItem, @Nullable Consumer<E> selectionConsumer);
 }

platform-independent/java/gui/src/main/java/com/lyndir/masterpassword/gui/util/SwingExecutorService.java

@@ -1,4 +1,4 @@
-package com.lyndir.masterpassword.gui;
+package com.lyndir.masterpassword.gui.util;
 
 import static com.lyndir.lhunath.opal.system.util.ObjectUtils.*;
 
@@ -29,9 +29,9 @@ public class SwingExecutorService extends AbstractExecutorService {
 
     @Override
     public void shutdown() {
+        synchronized (pendingCommands) {
             shutdown = true;
 
-        synchronized (pendingCommands) {
             if (pendingCommands.isEmpty())
                 terminated.add( true );
         }
@@ -49,8 +49,10 @@ public class SwingExecutorService extends AbstractExecutorService {
 
     @Override
     public boolean isShutdown() {
+        synchronized (pendingCommands) {
             return shutdown;
         }
+    }
 
     @Override
     public boolean isTerminated() {
@@ -65,10 +67,10 @@ public class SwingExecutorService extends AbstractExecutorService {
 
     @Override
     public void execute(@NotNull final Runnable command) {
+        synchronized (pendingCommands) {
             if (shutdown)
                 throw new RejectedExecutionException( "Executor is shut down." );
 
-        synchronized (pendingCommands) {
             pendingCommands.add( command );
         }
 

platform-independent/java/gui/src/main/java/com/lyndir/masterpassword/gui/util/UnsignedIntegerModel.java

@@ -109,13 +109,14 @@ public class UnsignedIntegerModel extends SpinnerNumberModel implements Selectab
     }
 
     @Override
-    public UnsignedIntegerModel selection(final UnsignedInteger selectedItem, @Nullable final Consumer<UnsignedInteger> selectionConsumer) {
+    public UnsignedIntegerModel selection(@Nullable final UnsignedInteger selectedItem,
+                                          @Nullable final Consumer<UnsignedInteger> selectionConsumer) {
         if (changeListener != null) {
             removeChangeListener( changeListener );
             changeListener = null;
         }
 
-        setValue( selectedItem );
+        setValue( (selectedItem != null)? selectedItem: getMinimum() );
         return selection( selectionConsumer );
     }
 

platform-independent/java/gui/src/main/java/com/lyndir/masterpassword/gui/util/platform/ApplePlatform.java

@@ -3,9 +3,9 @@ package com.lyndir.masterpassword.gui.util.platform;
 import com.apple.eawt.*;
 import com.apple.eio.FileManager;
 import com.google.common.base.Preconditions;
-import com.google.common.base.Throwables;
+import com.lyndir.lhunath.opal.system.logging.Logger;
-import java.io.File;
+import java.io.*;
-import java.io.FileNotFoundException;
+import java.net.URI;
 
 
 /**
@@ -13,12 +13,17 @@ import java.io.FileNotFoundException;
  */
 public class ApplePlatform implements IPlatform {
 
-    static Application application = Preconditions.checkNotNull(
+    private static final Logger      logger      = Logger.get( ApplePlatform.class );
+    private static final Application application = Preconditions.checkNotNull(
             Application.getApplication(), "Not an Apple Java application." );
 
+    private AppForegroundListener appForegroundHandler;
+    private AppReOpenedListener appReopenHandler;
+
     @Override
     public boolean installAppForegroundHandler(final Runnable handler) {
-        application.addAppEventListener( new AppForegroundListener() {
+        if (appForegroundHandler == null)
+            application.addAppEventListener( appForegroundHandler = new AppForegroundListener() {
                 @Override
                 public void appMovedToBackground(final AppEvent.AppForegroundEvent e) {
                 }
@@ -28,12 +33,37 @@ public class ApplePlatform implements IPlatform {
                     handler.run();
                 }
             } );
+
+        return true;
+    }
+
+    @Override
+    public boolean removeAppForegroundHandler() {
+        if (appForegroundHandler == null)
+            return false;
+
+        application.removeAppEventListener( appForegroundHandler );
         return true;
     }
 
     @Override
     public boolean installAppReopenHandler(final Runnable handler) {
-        application.addAppEventListener( (AppReOpenedListener) e -> handler.run() );
+        application.addAppEventListener( appReopenHandler = e -> handler.run() );
+        return true;
+    }
+
+    @Override
+    public boolean removeAppReopenHandler() {
+        if (appReopenHandler == null)
+            return false;
+
+        application.removeAppEventListener( appReopenHandler );
+        return true;
+    }
+
+    @Override
+    public boolean requestForeground() {
+        application.requestForeground( true );
         return true;
     }
 
@@ -42,7 +72,20 @@ public class ApplePlatform implements IPlatform {
         try {
             return FileManager.revealInFinder( file );
         }
-        catch (final FileNotFoundException ignored) {
+        catch (final FileNotFoundException e) {
+            logger.err( e, "While showing: %s", file );
+            return false;
+        }
+    }
+
+    @Override
+    public boolean open(final URI url) {
+        try {
+            FileManager.openURL( url.toString() );
+            return true;
+        }
+        catch (final IOException e) {
+            logger.err( e, "While opening: %s", url );
             return false;
         }
     }

platform-independent/java/gui/src/main/java/com/lyndir/masterpassword/gui/util/platform/BasePlatform.java

@@ -1,6 +1,7 @@
 package com.lyndir.masterpassword.gui.util.platform;
 
 import java.io.File;
+import java.net.URI;
 
 
 /**
@@ -13,13 +14,33 @@ public class BasePlatform implements IPlatform {
         return false;
     }
 
+    @Override
+    public boolean removeAppForegroundHandler() {
+        return false;
+    }
+
     @Override
     public boolean installAppReopenHandler(final Runnable handler) {
         return false;
     }
 
+    @Override
+    public boolean removeAppReopenHandler() {
+        return false;
+    }
+
+    @Override
+    public boolean requestForeground() {
+        return false;
+    }
+
     @Override
     public boolean show(final File file) {
         return false;
     }
+
+    @Override
+    public boolean open(final URI url) {
+        return false;
+    }
 }

platform-independent/java/gui/src/main/java/com/lyndir/masterpassword/gui/util/platform/IPlatform.java

@@ -1,6 +1,8 @@
 package com.lyndir.masterpassword.gui.util.platform;
 
 import java.io.File;
+import java.net.URI;
+import java.net.URL;
 
 
 /**
@@ -10,7 +12,15 @@ public interface IPlatform {
 
     boolean installAppForegroundHandler(Runnable handler);
 
+    boolean removeAppForegroundHandler();
+
     boolean installAppReopenHandler(Runnable handler);
 
+    boolean removeAppReopenHandler();
+
+    boolean requestForeground();
+
     boolean show(File file);
+
+    boolean open(URI url);
 }

platform-independent/java/gui/src/main/java/com/lyndir/masterpassword/gui/util/platform/JDK9Platform.java

@@ -1,8 +1,11 @@
 package com.lyndir.masterpassword.gui.util.platform;
 
+import com.lyndir.lhunath.opal.system.logging.Logger;
 import java.awt.*;
 import java.awt.desktop.*;
 import java.io.File;
+import java.io.IOException;
+import java.net.URI;
 
 
 /**
@@ -11,9 +14,16 @@ import java.io.File;
 @SuppressWarnings("Since15")
 public class JDK9Platform implements IPlatform {
 
+    private static final Logger  logger  = Logger.get( JDK9Platform.class );
+    private static final Desktop desktop = Desktop.getDesktop();
+
+    private AppForegroundListener appForegroundHandler;
+    private AppReopenedListener   appReopenHandler;
+
     @Override
     public boolean installAppForegroundHandler(final Runnable handler) {
-        Desktop.getDesktop().addAppEventListener( new AppForegroundListener() {
+        if (appForegroundHandler == null)
+            desktop.addAppEventListener( appForegroundHandler = new AppForegroundListener() {
                 @Override
                 public void appRaisedToForeground(final AppForegroundEvent e) {
                     handler.run();
@@ -23,12 +33,39 @@ public class JDK9Platform implements IPlatform {
                 public void appMovedToBackground(final AppForegroundEvent e) {
                 }
             } );
+
+        return true;
+    }
+
+    @Override
+    public boolean removeAppForegroundHandler() {
+        if (appForegroundHandler == null)
+            return false;
+
+        desktop.removeAppEventListener( appForegroundHandler );
         return true;
     }
 
     @Override
     public boolean installAppReopenHandler(final Runnable handler) {
-        Desktop.getDesktop().addAppEventListener( (AppReopenedListener) e -> handler.run() );
+        if (appReopenHandler == null)
+            desktop.addAppEventListener( appReopenHandler = e -> handler.run() );
+
+        return true;
+    }
+
+    @Override
+    public boolean removeAppReopenHandler() {
+        if (appReopenHandler == null)
+            return false;
+
+        desktop.removeAppEventListener( appReopenHandler );
+        return true;
+    }
+
+    @Override
+    public boolean requestForeground() {
+        desktop.requestForeground( true );
         return true;
     }
 
@@ -37,7 +74,19 @@ public class JDK9Platform implements IPlatform {
         if (!file.exists())
             return false;
 
-        Desktop.getDesktop().browseFileDirectory( file );
+        desktop.browseFileDirectory( file );
         return true;
     }
+
+    @Override
+    public boolean open(final URI url) {
+        try {
+            desktop.browse( url );
+            return true;
+        }
+        catch (final IOException e) {
+            logger.err( e, "While opening: %s", url );
+            return false;
+        }
+    }
 }

platform-independent/java/gui/src/main/java/com/lyndir/masterpassword/gui/view/FilesPanel.java

@@ -9,8 +9,6 @@ import com.lyndir.masterpassword.model.MPUser;
 import com.lyndir.masterpassword.model.impl.MPFileUser;
 import com.lyndir.masterpassword.model.impl.MPFileUserManager;
 import java.awt.*;
-import java.util.Collection;
-import java.util.concurrent.CopyOnWriteArraySet;
 import javax.annotation.Nullable;
 import javax.swing.*;
 
@@ -25,9 +23,7 @@ public class FilesPanel extends JPanel implements MPFileUserManager.Listener, Ma
                                                             "Click to change the user's avatar." );
 
     private final CollectionListModel<MPUser<?>> usersModel =
-            CollectionListModel.<MPUser<?>>copy( MPFileUserManager.get().getFiles() ).selection( MasterPassword.get()::activateUser );
+            new CollectionListModel<MPUser<?>>( MPFileUserManager.get().getFiles() ).selection( MasterPassword.get()::activateUser );
-    private final JComboBox<? extends MPUser<?>> userField  =
-            Components.comboBox( usersModel, user -> ifNotNull( user, MPUser::getFullName ) );
 
     protected FilesPanel() {
         setOpaque( false );
@@ -46,7 +42,7 @@ public class FilesPanel extends JPanel implements MPFileUserManager.Listener, Ma
         add( Components.strut( Components.margin() ) );
 
         // User Selection
-        add( userField );
+        add( Components.comboBox( usersModel, user -> ifNotNull( user, MPUser::getFullName ) ) );
 
         MPFileUserManager.get().addListener( this );
         MasterPassword.get().addListener( this );
@@ -68,7 +64,7 @@ public class FilesPanel extends JPanel implements MPFileUserManager.Listener, Ma
 
     @Override
     public void onUserSelected(@Nullable final MPUser<?> user) {
-        usersModel.setSelectedItem( user );
+        usersModel.selectItem( user );
         avatarButton.setIcon( Res.icons().avatar( (user == null)? 0: user.getAvatar() ) );
     }
 }

platform-independent/java/gui/src/main/java/com/lyndir/masterpassword/gui/view/MasterPasswordFrame.java

@@ -1,14 +1,12 @@
 package com.lyndir.masterpassword.gui.view;
 
 import com.lyndir.lhunath.opal.system.logging.Logger;
+import com.lyndir.masterpassword.gui.MPGuiConfig;
 import com.lyndir.masterpassword.gui.util.Components;
 import com.lyndir.masterpassword.gui.util.Res;
-import com.lyndir.masterpassword.model.MPUser;
 import com.lyndir.masterpassword.model.impl.MPFileUserManager;
 import java.awt.*;
-import java.awt.event.ComponentAdapter;
+import java.awt.event.*;
-import java.awt.event.ComponentEvent;
-import javax.annotation.Nullable;
 import javax.swing.*;
 import javax.swing.border.BevelBorder;
 
@@ -21,28 +19,27 @@ public class MasterPasswordFrame extends JFrame {
 
     private static final Logger logger = Logger.get( MasterPasswordFrame.class );
 
-    @SuppressWarnings("FieldCanBeLocal")
+    private final UserContentPanel userContent;
-    private final Components.GradientPanel root        = Components.borderPanel( Res.colors().frameBg(), BoxLayout.PAGE_AXIS );
-    private final FilesPanel               filesPanel  = new FilesPanel();
-    private final JPanel                   userPanel   = Components.panel( new BorderLayout( 0, 0 ) );
-    private final UserContentPanel         userContent = new UserContentPanel();
 
     @SuppressWarnings("MagicNumber")
     public MasterPasswordFrame() {
         super( "Master Password" );
 
-        setContentPane( root );
+        JPanel root, userPanel;
-        root.add( filesPanel );
+        setContentPane( root = Components.borderPanel( Res.colors().frameBg(), BoxLayout.PAGE_AXIS ) );
-        root.add( Components.strut() );
+
-        root.add( userPanel );
+        root.add( new FilesPanel() );
+        root.add( Components.strut() );
+        root.add( userPanel = Components.panel( new BorderLayout( 0, 0 ) ) );
 
-        userPanel.add( userContent.getUserToolbar(), BorderLayout.LINE_START );
-        userPanel.add( userContent.getSiteToolbar(), BorderLayout.LINE_END );
         userPanel.add( Components.borderPanel(
                 BorderFactory.createBevelBorder( BevelBorder.RAISED, Res.colors().controlBorder(), Res.colors().frameBg() ),
-                Res.colors().controlBg(), BoxLayout.PAGE_AXIS, userContent ), BorderLayout.CENTER );
+                Res.colors().controlBg(), BoxLayout.PAGE_AXIS, userContent = new UserContentPanel() ), BorderLayout.CENTER );
+        userPanel.add( userContent.getUserToolbar(), BorderLayout.LINE_START );
+        userPanel.add( userContent.getSiteToolbar(), BorderLayout.LINE_END );
 
         addComponentListener( new ComponentHandler() );
+        addWindowListener( new WindowHandler() );
         setPreferredSize( new Dimension( 800, 560 ) );
         setDefaultCloseOperation( DISPOSE_ON_CLOSE );
         pack();
@@ -59,4 +56,14 @@ public class MasterPasswordFrame extends JFrame {
             userContent.transferFocus();
         }
     }
+
+
+    private static class WindowHandler extends WindowAdapter {
+
+        @Override
+        public void windowClosed(final WindowEvent e) {
+            if (!MPGuiConfig.get().stayResident())
+                System.exit( 0 );
+        }
+    }
 }

platform-independent/java/gui/src/main/java/com/lyndir/masterpassword/gui/view/UserContentPanel.java

@@ -5,12 +5,12 @@ import static com.lyndir.lhunath.opal.system.util.StringUtils.*;
 import com.google.common.base.*;
 import com.google.common.collect.ImmutableList;
 import com.google.common.primitives.UnsignedInteger;
+import com.google.common.util.concurrent.ListenableFuture;
 import com.lyndir.lhunath.opal.system.logging.Logger;
 import com.lyndir.lhunath.opal.system.util.ObjectUtils;
 import com.lyndir.masterpassword.*;
-import com.lyndir.masterpassword.gui.MasterPassword;
+import com.lyndir.masterpassword.gui.*;
-import com.lyndir.masterpassword.gui.model.MPIncognitoUser;
+import com.lyndir.masterpassword.gui.model.*;
-import com.lyndir.masterpassword.gui.model.MPNewSite;
 import com.lyndir.masterpassword.gui.util.*;
 import com.lyndir.masterpassword.gui.util.Platform;
 import com.lyndir.masterpassword.model.*;
@@ -27,12 +27,13 @@ import java.util.*;
 import java.util.Optional;
 import java.util.concurrent.Future;
 import java.util.concurrent.TimeUnit;
-import java.util.function.Consumer;
+import java.util.regex.Pattern;
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
 import javax.swing.*;
 import javax.swing.event.DocumentEvent;
 import javax.swing.event.DocumentListener;
+import javax.swing.text.PlainDocument;
 
 
 /**
@@ -42,13 +43,18 @@ import javax.swing.event.DocumentListener;
 public class UserContentPanel extends JPanel implements MasterPassword.Listener, MPUser.Listener {
 
     private static final Random    random             = new Random();
+    private static final int       SIZE_RESULT        = 48;
     private static final Logger    logger             = Logger.get( UserContentPanel.class );
     private static final JButton   iconButton         = Components.button( Res.icons().user(), null, null );
+    private static final KeyStroke copyLoginKeyStroke = KeyStroke.getKeyStroke( KeyEvent.VK_ENTER, InputEvent.SHIFT_DOWN_MASK );
+    private static final Pattern   EACH_CHARACTER     = Pattern.compile( "." );
 
     private final JButton addButton    = Components.button( Res.icons().add(), event -> addUser(),
                                                             "Add a new user to Master Password." );
     private final JButton importButton = Components.button( Res.icons().import_(), event -> importUser(),
                                                             "Import a user from a backup file into Master Password." );
+    private final JButton helpButton   = Components.button( Res.icons().help(), event -> showHelp(),
+                                                            "Show information on how to use Master Password." );
 
     private final JPanel userToolbar = Components.panel( BoxLayout.PAGE_AXIS );
     private final JPanel siteToolbar = Components.panel( BoxLayout.PAGE_AXIS );
@@ -208,7 +214,7 @@ public class UserContentPanel extends JPanel implements MasterPassword.Listener,
                     this, strf( "<html>Couldn't read import file:<br><pre>%s</pre></html>.", e.getLocalizedMessage() ),
                     "Import Failed", JOptionPane.ERROR_MESSAGE );
         }
-        catch (MPMarshalException e) {
+        catch (final MPMarshalException e) {
             logger.err( e, "While parsing user import file." );
             JOptionPane.showMessageDialog(
                     this, strf( "<html>Couldn't parse import file:<br><pre>%s</pre></html>.", e.getLocalizedMessage() ),
@@ -216,6 +222,32 @@ public class UserContentPanel extends JPanel implements MasterPassword.Listener,
         }
     }
 
+    private void showHelp() {
+        JOptionPane.showMessageDialog( this, Components.linkLabel( strf(
+                "<h1>Master Password - v%s</h1>"
+                + "<p>The primary goal of this application is to provide a reliable security solution that also "
+                + "makes you independent from your computer.  If you lose access to this computer or your data, "
+                + "the application can regenerate all your secrets from scratch on any new device.</p>"
+                + "<h2>Opening Master Password</h2>"
+                + "<p>To use Master Password, simply open the application on your computer. "
+                + "Once running, you can bring up the user interface at any time by pressing the keys "
+                + "<strong><code>%s+%s</code></strong>."
+                + "<h2>Persistence</h2>"
+                + "<p>Though at the core, Master Password does not require the use of any form of data "
+                + "storage, the application does remember the names of the sites you've used in the past to "
+                + "make it easier for you to use them again in the future.  All user information is saved in "
+                + "files on your computer at the following location:<br><pre>%s</pre></p>"
+                + "<p>You can read, modify, backup or place new files in this location as you see fit. "
+                + "Some people even configure this location to be synced between their different computers "
+                + "using services such as those provided by SpiderOak or Dropbox.</p>"
+                + "<hr><p><a href='https://masterpassword.app'>https://masterpassword.app</a> — by Maarten Billemont</p>",
+                MasterPassword.get().version(),
+                InputEvent.getModifiersExText( MPGuiConstants.ui_hotkey.getModifiers() ),
+                KeyEvent.getKeyText( MPGuiConstants.ui_hotkey.getKeyCode() ),
+                MPFileUserManager.get().getPath().getAbsolutePath() ) ),
+                                       "About Master Password", JOptionPane.INFORMATION_MESSAGE );
+    }
+
     private enum ContentMode {
         NO_USER,
         AUTHENTICATE,
@@ -239,6 +271,8 @@ public class UserContentPanel extends JPanel implements MasterPassword.Listener,
 
             userToolbar.add( addButton );
             userToolbar.add( importButton );
+            userToolbar.add( Box.createGlue() );
+            userToolbar.add( helpButton );
 
             add( Box.createGlue() );
             add( Components.heading( "Select a user to proceed." ) );
@@ -259,9 +293,9 @@ public class UserContentPanel extends JPanel implements MasterPassword.Listener,
         private final JButton resetButton  = Components.button( Res.icons().reset(), event -> resetUser(),
                                                                 "Change the master password for this user." );
 
-        private final JPasswordField masterPasswordField = Components.passwordField();
+        private final JPasswordField masterPasswordField;
-        private final JLabel         errorLabel          = Components.label();
+        private final JLabel         errorLabel;
-        private final JLabel         identiconLabel      = Components.label( SwingConstants.CENTER );
+        private final JLabel         identiconLabel;
 
         private Future<?> identiconJob;
 
@@ -275,20 +309,22 @@ public class UserContentPanel extends JPanel implements MasterPassword.Listener,
             userToolbar.add( exportButton );
             userToolbar.add( deleteButton );
             userToolbar.add( resetButton );
+            userToolbar.add( Box.createGlue() );
+            userToolbar.add( helpButton );
 
             add( Components.heading( user.getFullName(), SwingConstants.CENTER ) );
             add( Components.strut() );
 
-            add( identiconLabel );
+            add( identiconLabel = Components.label( SwingConstants.CENTER ) );
             identiconLabel.setFont( Res.fonts().emoticonsFont( Components.TEXT_SIZE_CONTROL ) );
             add( Box.createGlue() );
 
             add( Components.label( "Master Password:" ) );
             add( Components.strut() );
-            add( masterPasswordField );
+            add( masterPasswordField = Components.passwordField() );
             masterPasswordField.addActionListener( this );
             masterPasswordField.getDocument().addDocumentListener( this );
-            add( errorLabel );
+            add( errorLabel = Components.label() );
             errorLabel.setForeground( Res.colors().errorFg() );
             add( Box.createGlue() );
         }
@@ -370,6 +406,9 @@ public class UserContentPanel extends JPanel implements MasterPassword.Listener,
             Res.job( () -> {
                 try {
                     user.authenticate( masterPassword );
+
+                    if (user instanceof MPFileUser)
+                        ((MPFileUser) user).migrateTo( MPMarshalFormat.DEFAULT );
                 }
                 catch (final MPIncorrectMasterPasswordException e) {
                     logger.wrn( e, "During user authentication for: %s", user );
@@ -425,9 +464,7 @@ public class UserContentPanel extends JPanel implements MasterPassword.Listener,
     }
 
 
-    private final class AuthenticatedUserPanel extends JPanel implements KeyListener, MPUser.Listener {
+    private final class AuthenticatedUserPanel extends JPanel implements KeyListener, MPUser.Listener, KeyEventDispatcher {
-
-        public static final int SIZE_RESULT = 48;
 
         private final JButton userButton      = Components.button( Res.icons().user(), event -> showUserPreferences(),
                                                                    "Show user preferences." );
@@ -435,22 +472,28 @@ public class UserContentPanel extends JPanel implements MasterPassword.Listener,
                                                                    "Sign out and lock user." );
         private final JButton settingsButton  = Components.button( Res.icons().settings(), event -> showSiteSettings(),
                                                                    "Show site settings." );
-        private final JButton questionsButton = Components.button( Res.icons().question(), null,
+        private final JButton questionsButton = Components.button( Res.icons().question(), event -> showSiteQuestions(),
                                                                    "Show site recovery questions." );
+        private final JButton editButton      = Components.button( Res.icons().edit(), event -> showSiteValues(),
+                                                                   "Set/save personal password/login." );
+        private final JButton keyButton       = Components.button( Res.icons().key(), event -> showSiteKeys(),
+                                                                   "Cryptographic site keys." );
         private final JButton deleteButton    = Components.button( Res.icons().delete(), event -> deleteSite(),
                                                                    "Delete the site from the user." );
 
         @Nonnull
         private final MPUser<?>                                                 user;
-        private final JLabel                         passwordLabel = Components.label( SwingConstants.CENTER );
+        private final JLabel                                                    resultLabel;
-        private final JLabel                         passwordField = Components.heading( SwingConstants.CENTER );
+        private final JLabel                                                    resultField;
-        private final JLabel                         queryLabel    = Components.label();
+        private final JLabel                                                    answerLabel;
-        private final JTextField                     queryField    = Components.textField( null, this::updateSites );
+        private final JLabel                                                    answerField;
-        private final CollectionListModel<MPSite<?>> sitesModel    =
+        private final JLabel                                                    queryLabel;
-                new CollectionListModel<MPSite<?>>().selection( this::showSiteResult );
+        private final JTextField                                                queryField;
-        private final JList<MPSite<?>>               sitesList     =
+        private final CollectionListModel<MPQuery.Result<? extends MPSite<?>>>  sitesModel;
-                Components.list( sitesModel, this::getSiteDescription );
+        private final CollectionListModel<MPQuery.Result<? extends MPQuestion>> questionsModel;
+        private final JList<MPQuery.Result<? extends MPSite<?>>>                sitesList;
 
+        private boolean   showLogin;
         private Future<?> updateSitesJob;
 
         private AuthenticatedUserPanel(@Nonnull final MPUser<?> user) {
@@ -461,56 +504,97 @@ public class UserContentPanel extends JPanel implements MasterPassword.Listener,
             userToolbar.add( addButton );
             userToolbar.add( userButton );
             userToolbar.add( logoutButton );
+            userToolbar.add( Box.createGlue() );
+            userToolbar.add( helpButton );
 
             siteToolbar.add( settingsButton );
             siteToolbar.add( questionsButton );
+            siteToolbar.add( editButton );
+            siteToolbar.add( keyButton );
             siteToolbar.add( deleteButton );
             settingsButton.setEnabled( false );
+            questionsButton.setEnabled( false );
+            editButton.setEnabled( false );
+            keyButton.setEnabled( false );
             deleteButton.setEnabled( false );
 
+            answerLabel = Components.label( "Answer:" );
+            answerField = Components.heading( SwingConstants.CENTER );
+            answerField.setForeground( Res.colors().highlightFg() );
+            answerField.setFont( Res.fonts().bigValueFont( SIZE_RESULT ) );
+            questionsModel = new CollectionListModel<MPQuery.Result<? extends MPQuestion>>().selection( this::showQuestionItem );
+
             add( Components.heading( user.getFullName(), SwingConstants.CENTER ) );
 
-            add( passwordLabel );
+            add( resultLabel = Components.label( SwingConstants.CENTER ) );
-            add( passwordField );
+            add( resultField = Components.heading( SwingConstants.CENTER ) );
-            passwordField.setForeground( Res.colors().highlightFg() );
+            resultField.setForeground( Res.colors().highlightFg() );
-            passwordField.setFont( Res.fonts().bigValueFont( SIZE_RESULT ) );
+            resultField.setFont( Res.fonts().bigValueFont( SIZE_RESULT ) );
             add( Box.createGlue() );
             add( Components.strut() );
 
-            add( queryLabel );
+            add( queryLabel = Components.label() );
             queryLabel.setText( strf( "%s's password for:", user.getFullName() ) );
-            add( queryField );
+            add( queryField = Components.textField( null, this::updateSites ) );
             queryField.putClientProperty( "JTextField.variant", "search" );
-            queryField.addActionListener( event -> useSite() );
+            queryField.addActionListener( this::useSite );
+            queryField.getInputMap().put( copyLoginKeyStroke, JTextField.notifyAction );
             queryField.addKeyListener( this );
             queryField.requestFocusInWindow();
             add( Components.strut() );
-            add( Components.scrollPane( sitesList ) );
+
-            sitesModel.registerList( sitesList );
+            add( Components.scrollPane( sitesList = Components.list(
-            add( Box.createGlue() );
+                    sitesModel = new CollectionListModel<MPQuery.Result<? extends MPSite<?>>>().selection( this::showSiteItem ),
+                    this::getSiteDescription ) ) );
+            sitesList.registerKeyboardAction( this::useSite, KeyStroke.getKeyStroke( KeyEvent.VK_ENTER, 0 ),
+                                              JComponent.WHEN_FOCUSED );
+            sitesList.registerKeyboardAction( this::useSite, KeyStroke.getKeyStroke( KeyEvent.VK_ENTER, InputEvent.SHIFT_DOWN_MASK ),
+                                              JComponent.WHEN_FOCUSED );
+            add( Components.strut() );
+
+            add( Components.label( strf(
+                    "Press %s to copy password, %s+%s to copy login name.",
+                    KeyEvent.getKeyText( KeyEvent.VK_ENTER ),
+                    InputEvent.getModifiersExText( copyLoginKeyStroke.getModifiers() ),
+                    KeyEvent.getKeyText( copyLoginKeyStroke.getKeyCode() ) ) ) );
 
             addHierarchyListener( e -> {
-                if (null != SwingUtilities.windowForComponent( this ))
+                if (HierarchyEvent.DISPLAYABILITY_CHANGED == (e.getChangeFlags() & HierarchyEvent.DISPLAYABILITY_CHANGED)) {
+                    if (null != SwingUtilities.windowForComponent( this )) {
+                        KeyboardFocusManager.getCurrentKeyboardFocusManager().addKeyEventDispatcher( this );
                         user.addListener( this );
-                else
+                    } else {
+                        KeyboardFocusManager.getCurrentKeyboardFocusManager().removeKeyEventDispatcher( this );
                         user.removeListener( this );
+                    }
+                }
             } );
         }
 
         public void showUserPreferences() {
             ImmutableList.Builder<Component> components = ImmutableList.builder();
 
-            MPFileUser fileUser = (user instanceof MPFileUser)? (MPFileUser) user: null;
-            if (fileUser != null)
-                components.add( Components.label( "Default Password Type:" ),
-                                Components.comboBox( MPResultType.values(), MPResultType::getLongName,
-                                                     fileUser.getDefaultType(), fileUser::setDefaultType ),
-                                Components.strut() );
-
             components.add( Components.label( "Default Algorithm:" ),
                             Components.comboBox( MPAlgorithm.Version.values(), MPAlgorithm.Version::name,
-                                                 user.getAlgorithm().version(),
+                                                 user.getAlgorithm().version(), version -> user.setAlgorithm( version.getAlgorithm() ) ) );
-                                                 version -> user.setAlgorithm( version.getAlgorithm() ) ) );
+
+            components.add( Components.label( "Default Password Type:" ),
+                            Components.comboBox( MPResultType.values(), MPResultType::getLongName,
+                                                 user.getPreferences().getDefaultType(), user.getPreferences()::setDefaultType ),
+                            Components.strut() );
+
+            components.add( Components.checkBox( "Hide Passwords",
+                                                 user.getPreferences().isHidePasswords(), user.getPreferences()::setHidePasswords ) );
+
+            components.add( new JSeparator() );
+
+            components.add( Components.checkBox( "Check For Updates",
+                                                 MPGuiConfig.get().checkForUpdates(), MPGuiConfig.get()::setCheckForUpdates ) );
+
+            components.add( Components.checkBox( strf( "<html>Stay Resident (reactivate with <strong><code>%s+%s</code></strong>)",
+                                                       InputEvent.getModifiersExText( MPGuiConstants.ui_hotkey.getModifiers() ),
+                                                       KeyEvent.getKeyText( MPGuiConstants.ui_hotkey.getKeyCode() ) ),
+                                                 MPGuiConfig.get().stayResident(), MPGuiConfig.get()::setStayResident ) );
 
             Components.showDialog( this, user.getFullName(), new JOptionPane( Components.panel(
                     BoxLayout.PAGE_AXIS, components.build().toArray( new Component[0] ) ) ) );
@@ -521,7 +605,7 @@ public class UserContentPanel extends JPanel implements MasterPassword.Listener,
         }
 
         public void showSiteSettings() {
-            MPSite<?> site = sitesModel.getSelectedItem();
+            MPSite<?> site = getSite();
             if (site == null)
                 return;
 
@@ -537,12 +621,14 @@ public class UserContentPanel extends JPanel implements MasterPassword.Listener,
                             Components.strut() );
 
             components.add( Components.label( "Password Type:" ),
-                            Components.comboBox( MPResultType.values(), MPResultType::getLongName,
+                            Components.comboBox( MPResultType.values(), type ->
+                                                         getTypeDescription( type, user.getPreferences().getDefaultType() ),
                                                  site.getResultType(), site::setResultType ),
                             Components.strut() );
 
             components.add( Components.label( "Login Type:" ),
-                            Components.comboBox( MPResultType.values(), MPResultType::getLongName,
+                            Components.comboBox( MPResultType.values(), type ->
+                                                         getTypeDescription( type, user.getAlgorithm().mpw_default_login_type() ),
                                                  site.getLoginType(), site::setLoginType ),
                             Components.strut() );
 
@@ -552,12 +638,183 @@ public class UserContentPanel extends JPanel implements MasterPassword.Listener,
                                 Components.textField( fileSite.getUrl(), fileSite::setUrl ),
                                 Components.strut() );
 
-            Components.showDialog( this, site.getSiteName(), new JOptionPane( Components.panel(
+            Components.showDialog( this, strf( "Settings for %s", site.getSiteName() ), new JOptionPane( Components.panel(
                     BoxLayout.PAGE_AXIS, components.build().toArray( new Component[0] ) ) ) );
         }
 
+        private String getTypeDescription(final MPResultType type, final MPResultType... defaults) {
+            boolean isDefault = false;
+            for (final MPResultType d : defaults)
+                if (isDefault = type == d)
+                    break;
+
+            return strf( "<html>%s%s%s, %s", isDefault? "<b>": "", type.getLongName(), isDefault? "</b>": "", type.getDescription() );
+        }
+
+        public void showSiteQuestions() {
+            MPSite<?> site = getSite();
+            if (site == null)
+                return;
+
+            JList<MPQuery.Result<? extends MPQuestion>> questionsList =
+                    Components.list( questionsModel, this::getQuestionDescription );
+            JTextField queryField = Components.textField( null, queryText -> Res.job( () -> {
+                MPQuery query = new MPQuery( queryText );
+                Collection<MPQuery.Result<? extends MPQuestion>> questionItems = new LinkedList<MPQuery.Result<? extends MPQuestion>>(
+                        query.find( site.getQuestions(), MPQuestion::getKeyword ) );
+
+                if (questionItems.stream().noneMatch( MPQuery.Result::isExact ))
+                    questionItems.add( MPQuery.Result.allOf( new MPNewQuestion( site, query.getQuery() ), query.getQuery() ) );
+
+                Res.ui( () -> questionsModel.set( questionItems ) );
+            } ) );
+            queryField.putClientProperty( "JTextField.variant", "search" );
+            queryField.addActionListener( this::useQuestion );
+            queryField.addKeyListener( new KeyAdapter() {
+                @Override
+                public void keyPressed(final KeyEvent event) {
+                    if ((event.getKeyCode() == KeyEvent.VK_UP) || (event.getKeyCode() == KeyEvent.VK_DOWN))
+                        questionsList.dispatchEvent( event );
+                }
+
+                @Override
+                public void keyReleased(final KeyEvent event) {
+                    if ((event.getKeyCode() == KeyEvent.VK_UP) || (event.getKeyCode() == KeyEvent.VK_DOWN))
+                        questionsList.dispatchEvent( event );
+                }
+            } );
+
+            Components.showDialog( this, strf( "Recovery answers for %s", site.getSiteName() ), new JOptionPane( Components.panel(
+                    BoxLayout.PAGE_AXIS,
+                    Components.label( "Security Question Keyword:" ), queryField,
+                    Components.strut(),
+                    answerLabel, answerField,
+                    Components.strut(),
+                    Components.scrollPane( questionsList ) ) ) {
+                @Override
+                public void selectInitialValue() {
+                    queryField.requestFocusInWindow();
+                }
+            } );
+        }
+
+        public void showSiteValues() {
+            MPSite<?> site = getSite();
+            if (site == null)
+                return;
+
+            try {
+                JTextField passwordField = Components.textField( site.getResult(), null );
+                JTextField loginField    = Components.textField( site.getLogin(), null );
+                passwordField.setEditable( site.getResultType().getTypeClass() == MPResultTypeClass.Stateful );
+                loginField.setEditable( site.getLoginType().getTypeClass() == MPResultTypeClass.Stateful );
+
+                if (JOptionPane.OK_OPTION == Components.showDialog( this, site.getSiteName(), new JOptionPane(
+                        Components.panel(
+                                BoxLayout.PAGE_AXIS,
+                                Components.label( strf( "<html>Site Login (currently set to: <b>%s</b>):",
+                                                        getTypeDescription( site.getLoginType() ) ) ),
+                                loginField,
+                                Components.strut(),
+                                Components.label( strf( "<html>Site Password (currently set to: <b>%s</b>):",
+                                                        getTypeDescription( site.getResultType() ) ) ),
+                                passwordField,
+                                Components.strut(),
+                                Components.label( "<html>To save a personal value in these fields,\n" +
+                                                  "change the type to <b>Saved</b> in the site's settings." ) ),
+                        JOptionPane.PLAIN_MESSAGE, JOptionPane.OK_CANCEL_OPTION ) {
+                    @Override
+                    public void selectInitialValue() {
+                        passwordField.requestFocusInWindow();
+                    }
+                } )) {
+                    if (site instanceof MPFileSite) {
+                        MPFileSite fileSite = (MPFileSite) site;
+
+                        if (site.getResultType().getTypeClass() == MPResultTypeClass.Stateful)
+                            fileSite.setSitePassword( site.getResultType(), passwordField.getText() );
+                        if (site.getLoginType().getTypeClass() == MPResultTypeClass.Stateful)
+                            fileSite.setLoginName( site.getLoginType(), loginField.getText() );
+                    }
+                }
+            }
+            catch (final MPKeyUnavailableException | MPAlgorithmException e) {
+                logger.err( e, "While computing site edit results." );
+            }
+        }
+
+        public void showSiteKeys() {
+            MPSite<?> site = getSite();
+            if (site == null)
+                return;
+
+            JTextArea resultField = Components.textArea();
+            resultField.setEnabled( false );
+
+            CollectionListModel<MPKeyPurpose> purposeModel = new CollectionListModel<>( MPKeyPurpose.values() );
+            DocumentModel                     contextModel = new DocumentModel( new PlainDocument() );
+            UnsignedIntegerModel              counterModel = new UnsignedIntegerModel( UnsignedInteger.ONE );
+            CollectionListModel<MPResultType> typeModel    = new CollectionListModel<>( MPResultType.values() );
+            DocumentModel                     stateModel   = new DocumentModel( new PlainDocument() );
+
+            Runnable trigger = () -> Res.job( () -> {
+                try {
+                    MPKeyPurpose purpose = purposeModel.getSelectedItem();
+                    MPResultType type    = typeModel.getSelectedItem();
+
+                    String result = ((purpose == null) || (type == null))? null:
+                            site.getResult( purpose, contextModel.getText(), counterModel.getNumber(), type, stateModel.getText() );
+
+                    Res.ui( () -> resultField.setText( result ) );
+                }
+                catch (final MPKeyUnavailableException | MPAlgorithmException e) {
+                    logger.err( e, "While computing site edit results." );
+                }
+            } );
+
+            purposeModel.selection( MPKeyPurpose.Authentication, p -> trigger.run() );
+            contextModel.selection( c -> trigger.run() );
+            counterModel.selection( c -> trigger.run() );
+            typeModel.selection( MPResultType.DeriveKey, t -> {
+                switch (t) {
+                    case DeriveKey:
+                        stateModel.setText( Integer.toString( site.getAlgorithm().mpw_keySize_min() ) );
+                        break;
+
+                    default:
+                        stateModel.setText( null );
+                }
+
+                trigger.run();
+            } );
+            stateModel.selection( c -> trigger.run() );
+
+            if (JOptionPane.OK_OPTION == Components.showDialog( this, site.getSiteName(), new JOptionPane( Components.panel(
+                    BoxLayout.PAGE_AXIS,
+                    Components.heading( "Key Calculator" ),
+                    Components.label( "Purpose:" ),
+                    Components.comboBox( purposeModel, MPKeyPurpose::getShortName ),
+                    Components.strut(),
+                    Components.label( "Context:" ),
+                    Components.textField( contextModel.getDocument() ),
+                    Components.label( "Counter:" ),
+                    Components.spinner( counterModel ),
+                    Components.label( "Type:" ),
+                    Components.comboBox( typeModel, this::getTypeDescription ),
+                    Components.label( "State:" ),
+                    Components.scrollPane( Components.textField( stateModel.getDocument() ) ),
+                    Components.strut(),
+                    resultField ) ) {
+                {
+                    setOptions( new Object[]{ "Copy", "Cancel" } );
+                    setInitialValue( getOptions()[0] );
+                }
+            } ))
+                copyResult( resultField.getText() );
+        }
+
         public void deleteSite() {
-            MPSite<?> site = sitesModel.getSelectedItem();
+            MPSite<?> site = getSite();
             if (site == null)
                 return;
 
@@ -567,96 +824,193 @@ public class UserContentPanel extends JPanel implements MasterPassword.Listener,
                 user.deleteSite( site );
         }
 
-        private String getSiteDescription(@Nonnull final MPSite<?> site) {
+        private String getSiteDescription(@Nullable final MPQuery.Result<? extends MPSite<?>> item) {
+            MPSite<?> site = (item != null)? item.getValue(): null;
+            if (site == null)
+                return " ";
             if (site instanceof MPNewSite)
-                return strf( "<html><strong>%s</strong> &lt;Add new site&gt;</html>", queryField.getText() );
+                return strf( "<html><strong>%s</strong> &lt;Add new site&gt;</html>", item.getKeyAsHTML() );
 
             ImmutableList.Builder<Object> parameters = ImmutableList.builder();
-            try {
             MPFileSite                    fileSite   = (site instanceof MPFileSite)? (MPFileSite) site: null;
             if (fileSite != null)
                 parameters.add( Res.format( fileSite.getLastUsed() ) );
             parameters.add( site.getAlgorithm().version() );
             parameters.add( strf( "#%d", site.getCounter().longValue() ) );
-                parameters.add( strf( "<em>%s</em>", site.getLogin() ) );
             if ((fileSite != null) && (fileSite.getUrl() != null))
                 parameters.add( fileSite.getUrl() );
-            }
-            catch (final MPAlgorithmException | MPKeyUnavailableException e) {
-                logger.err( e, "While generating site description." );
-                parameters.add( e.getLocalizedMessage() );
-            }
 
-            return strf( "<html><strong>%s</strong> (%s)</html>", site.getSiteName(),
+            return strf( "<html><strong>%s</strong> (%s)</html>", item.getKeyAsHTML(),
                          Joiner.on( " - " ).skipNulls().join( parameters.build() ) );
         }
 
-        private void useSite() {
+        private String getQuestionDescription(@Nullable final MPQuery.Result<? extends MPQuestion> item) {
-            MPSite<?> site = sitesModel.getSelectedItem();
+            MPQuestion question = (item != null)? item.getValue(): null;
-            if (site instanceof MPNewSite) {
+            if (question == null)
-                if (JOptionPane.YES_OPTION == JOptionPane.showConfirmDialog(
+                return "<site>";
-                        this, strf( "<html>Remember the site <strong>%s</strong>?</html>", site.getSiteName() ),
+            if (question instanceof MPNewQuestion)
-                        "New Site", JOptionPane.YES_NO_OPTION )) {
+                return strf( "<html>%s &lt;Add new question&gt;</html>", item.getKeyAsHTML() );
-                    sitesModel.setSelectedItem( user.addSite( site.getSiteName() ) );
+
-                    useSite();
+            return strf( "<html>%s</html>", item.getKeyAsHTML() );
-                }
-                return;
         }
 
-            showSiteResult( site, result -> {
+        private void useSite(final ActionEvent event) {
+            MPSite<?> site = getSite();
+            if (site instanceof MPNewSite) {
+                if (JOptionPane.YES_OPTION != JOptionPane.showConfirmDialog(
+                        this, strf( "<html>Remember the site <strong>%s</strong>?</html>", site.getSiteName() ),
+                        "New Site", JOptionPane.YES_NO_OPTION ))
+                    return;
+
+                site = ((MPNewSite) site).addTo( user );
+            }
+
+            boolean   loginResult = (copyLoginKeyStroke.getModifiers() & event.getModifiers()) != 0;
+            MPSite<?> fsite       = site;
+            Res.ui( getSiteResult( site, loginResult ), result -> {
                 if (result == null)
                     return;
 
-                if (site instanceof MPFileSite)
+                if (fsite instanceof MPFileSite)
-                    ((MPFileSite) site).use();
+                    ((MPFileSite) fsite).use();
 
-                Transferable clipboardContents = new StringSelection( result );
+                copyResult( result );
-                Toolkit.getDefaultToolkit().getSystemClipboard().setContents( clipboardContents, null );
-
-                Res.ui( () -> {
-                    Window window = SwingUtilities.windowForComponent( UserContentPanel.this );
-                    if (window != null)
-                        window.dispatchEvent( new WindowEvent( window, WindowEvent.WINDOW_CLOSING ) );
-                } );
             } );
         }
 
-        private void showSiteResult(@Nullable final MPSite<?> site) {
+        private void setShowLogin(final boolean showLogin) {
-            showSiteResult( site, null );
+            if (showLogin == this.showLogin)
-        }
-
-        private void showSiteResult(@Nullable final MPSite<?> site, @Nullable final Consumer<String> resultCallback) {
-            if (site == null) {
-                if (resultCallback != null)
-                    resultCallback.accept( null );
-                Res.ui( () -> {
-                    passwordLabel.setText( " " );
-                    passwordField.setText( " " );
-                    settingsButton.setEnabled( false );
-                    deleteButton.setEnabled( false );
-                } );
                 return;
+
+            this.showLogin = showLogin;
+            showSiteItem( sitesModel.getSelectedItem() );
         }
 
-            Res.job( () -> {
+        private void showSiteItem(@Nullable final MPQuery.Result<? extends MPSite<?>> item) {
-                try {
+            MPSite<?> site = (item != null)? item.getValue(): null;
-                    String result = site.getResult();
+            Res.ui( getSiteResult( site, showLogin ), result -> {
-                    if (resultCallback != null)
+                if (!showLogin && (site != null))
-                        resultCallback.accept( result );
+                    resultLabel.setText( (result != null)? strf( "Your password for %s:", site.getSiteName() ): " " );
+                else if (showLogin && (site != null))
+                    resultLabel.setText( (result != null)? strf( "Your login for %s:", site.getSiteName() ): " " );
 
-                    Res.ui( () -> {
+                if ((result == null) || result.isEmpty())
-                        passwordLabel.setText( strf( "Your password for %s:", site.getSiteName() ) );
+                    resultField.setText( " " );
-                        passwordField.setText( result );
+                else if (!showLogin && user.getPreferences().isHidePasswords())
-                        settingsButton.setEnabled( true );
+                    resultField.setText( EACH_CHARACTER.matcher( result ).replaceAll( "•" ) );
-                        deleteButton.setEnabled( true );
+                else
+                    resultField.setText( result );
+                settingsButton.setEnabled( result != null );
+                questionsButton.setEnabled( result != null );
+                editButton.setEnabled( result != null );
+                keyButton.setEnabled( result != null );
+                deleteButton.setEnabled( result != null );
             } );
         }
+
+        private ListenableFuture<String> getSiteResult(@Nullable final MPSite<?> site, final boolean loginResult) {
+            return Res.job( () -> {
+                try {
+                    if (site != null)
+                        return loginResult? site.getLogin(): site.getResult();
+                }
                 catch (final MPKeyUnavailableException | MPAlgorithmException e) {
                     logger.err( e, "While resolving password for: %s", site );
                 }
+
+                return null;
             } );
         }
 
+        private void useQuestion(final ActionEvent event) {
+            MPQuestion question = getQuestion();
+            if (question instanceof MPNewQuestion) {
+                if (JOptionPane.YES_OPTION != JOptionPane.showConfirmDialog(
+                        this,
+                        strf( "<html>Remember the security question with keyword <strong>%s</strong>?</html>",
+                              Strings.isNullOrEmpty( question.getKeyword() )? "<empty>": question.getKeyword() ),
+                        "New Question", JOptionPane.YES_NO_OPTION ))
+                    return;
+
+                question = question.getSite().addQuestion( question.getKeyword() );
+            }
+
+            MPQuestion fquestion = question;
+            Res.ui( getQuestionResult( question ), result -> {
+                if (result == null)
+                    return;
+
+                if (fquestion instanceof MPFileQuestion)
+                    ((MPFileQuestion) fquestion).use();
+
+                copyResult( result );
+            } );
+        }
+
+        private void showQuestionItem(@Nullable final MPQuery.Result<? extends MPQuestion> item) {
+            MPQuestion question = (item != null)? item.getValue(): null;
+            Res.ui( getQuestionResult( question ), answer -> {
+                if ((answer == null) || (question == null))
+                    answerLabel.setText( " " );
+                else
+                    answerLabel.setText(
+                            Strings.isNullOrEmpty( question.getKeyword() )?
+                                    strf( "<html>Answer for site <b>%s</b>:", question.getSite().getSiteName() ):
+                                    strf( "<html>Answer for site <b>%s</b>, of question with keyword <b>%s</b>:",
+                                          question.getSite().getSiteName(), question.getKeyword() ) );
+                answerField.setText( (answer != null)? answer: " " );
+            } );
+        }
+
+        private ListenableFuture<String> getQuestionResult(@Nullable final MPQuestion question) {
+            return Res.job( () -> {
+                try {
+                    if (question != null)
+                        return question.getAnswer();
+                }
+                catch (final MPKeyUnavailableException | MPAlgorithmException e) {
+                    logger.err( e, "While resolving answer for: %s", question );
+                }
+
+                return null;
+            } );
+        }
+
+        private void copyResult(final String result) {
+            Transferable clipboardContents = new StringSelection( result );
+            Toolkit.getDefaultToolkit().getSystemClipboard().setContents( clipboardContents, null );
+
+            Res.ui( () -> {
+                Window answerDialog = SwingUtilities.windowForComponent( answerField );
+                if (answerDialog instanceof Dialog)
+                    answerDialog.setVisible( false );
+
+                Window window = SwingUtilities.windowForComponent( UserContentPanel.this );
+                if (window instanceof Frame)
+                    ((Frame) window).setExtendedState( Frame.ICONIFIED );
+
+                setShowLogin( false );
+            } );
+        }
+
+        @Nullable
+        private MPSite<?> getSite() {
+            MPQuery.Result<? extends MPSite<?>> selectedSite = sitesModel.getSelectedItem();
+            if (selectedSite == null)
+                return null;
+
+            return selectedSite.getValue();
+        }
+
+        @Nullable
+        private MPQuestion getQuestion() {
+            MPQuery.Result<? extends MPQuestion> selectedQuestion = questionsModel.getSelectedItem();
+            if (selectedQuestion == null)
+                return null;
+
+            return selectedQuestion.getValue();
+        }
+
         @Override
         public void keyTyped(final KeyEvent event) {
         }
@@ -673,27 +1027,33 @@ public class UserContentPanel extends JPanel implements MasterPassword.Listener,
                 sitesList.dispatchEvent( event );
         }
 
-        private synchronized void updateSites(@Nullable final String query) {
+        private synchronized void updateSites(@Nullable final String queryText) {
             if (updateSitesJob != null)
                 updateSitesJob.cancel( true );
 
             updateSitesJob = Res.job( () -> {
-                Collection<MPSite<?>> sites = new LinkedList<>();
+                MPQuery query = new MPQuery( queryText );
-                if (!Strings.isNullOrEmpty( query )) {
+                Collection<MPQuery.Result<? extends MPSite<?>>> siteItems = new LinkedList<MPQuery.Result<? extends MPSite<?>>>(
-                    sites.addAll( new LinkedList<>( user.findSites( query ) ) );
+                        query.find( user.getSites(), MPSite::getSiteName ) );
 
-                    if (sites.stream().noneMatch( site -> site.getSiteName().equalsIgnoreCase( query ) ))
+                if (!Strings.isNullOrEmpty( queryText ))
-                        sites.add( new MPNewSite( user, query ) );
+                    if (siteItems.stream().noneMatch( MPQuery.Result::isExact )) {
+                        MPQuery.Result<? extends MPSite<?>> selectedItem = sitesModel.getSelectedItem();
+                        if ((selectedItem != null) && user.equals( selectedItem.getValue().getUser() ) &&
+                            queryText.equals( selectedItem.getValue().getSiteName() ))
+                            siteItems.add( selectedItem );
+                        else
+                            siteItems.add( MPQuery.Result.allOf( new MPNewSite( user, query.getQuery() ), query.getQuery() ) );
                     }
 
-                Res.ui( () -> sitesModel.set( sites ) );
+                Res.ui( () -> sitesModel.set( siteItems ) );
             } );
         }
 
         @Override
         public void onUserUpdated(final MPUser<?> user) {
             updateSites( queryField.getText() );
-            showSiteResult( sitesModel.getSelectedItem() );
+            showSiteItem( sitesModel.getSelectedItem() );
         }
 
         @Override
@@ -703,5 +1063,13 @@ public class UserContentPanel extends JPanel implements MasterPassword.Listener,
         @Override
         public void onUserInvalidated(final MPUser<?> user) {
         }
+
+        @Override
+        public boolean dispatchKeyEvent(final KeyEvent e) {
+            if (e.getKeyCode() == KeyEvent.VK_SHIFT)
+                setShowLogin( e.isShiftDown() );
+
+            return false;
+        }
     }
 }

platform-independent/java/model/src/main/java/com/lyndir/masterpassword/model/MPConfig.java

@@ -0,0 +1,78 @@
+package com.lyndir.masterpassword.model;
+
+import com.fasterxml.jackson.annotation.JsonIgnore;
+import com.google.common.collect.ClassToInstanceMap;
+import com.google.common.collect.MutableClassToInstanceMap;
+import com.lyndir.lhunath.opal.system.logging.Logger;
+import com.lyndir.masterpassword.model.impl.Changeable;
+import com.lyndir.masterpassword.model.impl.MPJSONAnyObject;
+import java.io.File;
+import java.io.IOException;
+
+
+/**
+ * @author lhunath, 2018-10-14
+ */
+@SuppressWarnings("CallToSystemGetenv")
+public class MPConfig extends MPJSONAnyObject {
+
+    private static final Logger                       logger     = Logger.get( MPConfig.class );
+    private static final ClassToInstanceMap<MPConfig> instances  = MutableClassToInstanceMap.create();
+    private static final File                         configFile = new File( rcDir(), "config.json" );
+
+    private final        Changeable                   changeable = new Changeable() {
+        @Override
+        protected void onChanged() {
+            try {
+                objectMapper.writerWithDefaultPrettyPrinter().writeValue( configFile, MPConfig.this );
+                instances.clear();
+            }
+            catch (final IOException e) {
+                logger.err( e, "While saving config to: %s", configFile );
+            }
+        }
+    };
+
+    protected static synchronized <C extends MPConfig> C get(final Class<C> type) {
+        C instance = instances.getInstance( type );
+
+        if (instance == null)
+            if (configFile.exists())
+                try {
+                    instances.putInstance( type, instance = objectMapper.readValue( configFile, type ) );
+                }
+                catch (final IOException e) {
+                    logger.wrn( e, "While reading config file: %s", configFile );
+                }
+
+        if (instance == null)
+            try {
+                instance = type.getConstructor().newInstance();
+            }
+            catch (final ReflectiveOperationException e) {
+                throw logger.bug( e );
+            }
+
+        return instance;
+    }
+
+    protected void setChanged() {
+        changeable.setChanged();
+    }
+
+    public static MPConfig get() {
+        return get( MPConfig.class );
+    }
+
+    public static File rcDir() {
+        String rcDir = System.getenv( MPModelConstants.env_rcDir );
+        if (rcDir != null)
+            return new File( rcDir );
+
+        String home = System.getProperty( "user.home" );
+        if (home == null)
+            home = System.getenv( "HOME" );
+
+        return new File( home, ".mpw.d" );
+    }
+}

platform-independent/java/model/src/main/java/com/lyndir/masterpassword/model/MPModelConstants.java

@@ -25,7 +25,7 @@ import org.joda.time.format.ISODateTimeFormat;
 /**
  * @author lhunath, 2016-10-29
  */
-public final class MPConstants {
+public final class MPModelConstants {
 
     /* Environment */
 
@@ -33,6 +33,7 @@ public final class MPConstants {
      * mpw: default path to look for run configuration files if the platform default is not desired.
      */
     public static final String env_rcDir = "MPW_RCDIR";
+
     /**
      * mpw: permit automatic update checks.
      */

platform-independent/java/model/src/main/java/com/lyndir/masterpassword/model/MPQuery.java

@@ -0,0 +1,165 @@
+package com.lyndir.masterpassword.model;
+
+import static com.lyndir.lhunath.opal.system.util.StringUtils.*;
+
+import com.google.common.collect.ImmutableCollection;
+import com.google.common.collect.ImmutableList;
+import java.util.*;
+import java.util.function.Function;
+import javax.annotation.Nonnull;
+import javax.annotation.Nullable;
+
+
+/**
+ * @author lhunath, 2018-09-11
+ */
+public class MPQuery {
+
+    @Nonnull
+    private final String query;
+
+    public MPQuery(@Nullable final String query) {
+        this.query = (query != null)? query: "";
+    }
+
+    @Nonnull
+    public String getQuery() {
+        return query;
+    }
+
+    /**
+     * @return {@code true} if this query is contained wholly inside the given {@code key}.
+     */
+    @Nonnull
+    public <V> Optional<Result<V>> matches(final V value, final CharSequence key) {
+        Result<V> result = Result.noneOf( value, key );
+        if (query.isEmpty())
+            return Optional.of( result );
+        if (key.length() == 0)
+            return Optional.empty();
+
+        // Consume query and key characters until one of them runs out, recording any matches against the result's key.
+        int q = 0, k = 0;
+        while ((q < query.length()) && (k < key.length())) {
+            if (query.charAt( q ) == key.charAt( k )) {
+                result.keyMatchedAt( k );
+                ++q;
+            }
+
+            ++k;
+        }
+
+        // If the match against the query broke before the end of the query, it failed.
+        return (q < query.length())? Optional.empty(): Optional.of( result );
+    }
+
+    /**
+     * @return Results for values that matched against the query, in the original values' order.
+     */
+    @Nonnull
+    public <V> ImmutableCollection<Result<? extends V>> find(final Iterable<? extends V> values,
+                                                             final Function<V, CharSequence> valueToKey) {
+        ImmutableList.Builder<Result<? extends V>> results = ImmutableList.builder();
+        for (final V value : values)
+            matches( value, valueToKey.apply( value ) ).ifPresent( results::add );
+
+        return results.build();
+    }
+
+    public static class Result<V> {
+
+        private final V            value;
+        private final CharSequence key;
+        private final boolean[]    keyMatches;
+
+        Result(final V value, final CharSequence key) {
+            this.value = value;
+            this.key = key;
+
+            keyMatches = new boolean[key.length()];
+        }
+
+        public static <T> Result<T> noneOf(final T value, final CharSequence key) {
+            return new Result<>( value, key );
+        }
+
+        public static <T> Result<T> allOf(final T value, final CharSequence key) {
+            Result<T> result = noneOf( value, key );
+            Arrays.fill( result.keyMatches, true );
+            return result;
+        }
+
+        @Nonnull
+        public V getValue() {
+            return value;
+        }
+
+        @Nonnull
+        public CharSequence getKey() {
+            return key;
+        }
+
+        public String getKeyAsHTML() {
+            return getKeyAsHTML( "u" );
+        }
+
+        @SuppressWarnings({ "MagicCharacter", "HardcodedFileSeparator" })
+        public String getKeyAsHTML(final String mark) {
+            String        closeMark = mark.contains( " " )? mark.substring( 0, mark.indexOf( ' ' ) ): mark;
+            StringBuilder html      = new StringBuilder();
+            boolean       marked    = false;
+
+            for (int i = 0; i < key.length(); ++i) {
+                if (keyMatches[i] && !marked) {
+                    html.append( '<' ).append( mark ).append( '>' );
+                    marked = true;
+                } else if (!keyMatches[i] && marked) {
+                    html.append( '<' ).append( '/' ).append( closeMark ).append( '>' );
+                    marked = false;
+                }
+
+                html.append( key.charAt( i ) );
+            }
+
+            if (marked)
+                html.append( '<' ).append( '/' ).append( closeMark ).append( '>' );
+
+            return html.toString();
+        }
+
+        public boolean[] getKeyMatches() {
+            return keyMatches.clone();
+        }
+
+        public boolean isExact() {
+            for (final boolean keyMatch : keyMatches)
+                if (!keyMatch)
+                    return false;
+
+            return true;
+        }
+
+        private void keyMatchedAt(final int k) {
+            keyMatches[k] = true;
+        }
+
+        @Override
+        public boolean equals(final Object o) {
+            if (!(o instanceof Result))
+                return false;
+
+            Result<?> r = (Result<?>) o;
+            return Objects.equals( value, r.value ) && Objects.equals( key, r.key ) && Arrays.equals( keyMatches, r.keyMatches );
+        }
+
+        @Override
+        public int hashCode() {
+            return getValue().hashCode();
+        }
+
+        @Override
+        public String toString() {
+            return strf( "{Result: %s}", key );
+        }
+    }
+}

platform-independent/java/model/src/main/java/com/lyndir/masterpassword/model/MPQuestion.java

@@ -40,7 +40,14 @@ public interface MPQuestion extends Comparable<MPQuestion> {
 
     void setType(MPResultType type);
 
-    @Nonnull
+    @Nullable
+    default String getAnswer()
+            throws MPKeyUnavailableException, MPAlgorithmException {
+
+        return getAnswer( null );
+    }
+
+    @Nullable
     String getAnswer(@Nullable String state)
             throws MPKeyUnavailableException, MPAlgorithmException;
 

platform-independent/java/model/src/main/java/com/lyndir/masterpassword/model/MPSite.java

@@ -57,35 +57,48 @@ public interface MPSite<Q extends MPQuestion> extends Comparable<MPSite<?>> {
 
     void setLoginType(@Nullable MPResultType loginType);
 
+    @Nullable
     default String getResult()
             throws MPKeyUnavailableException, MPAlgorithmException {
-
         return getResult( MPKeyPurpose.Authentication );
     }
 
-    @Nonnull
+    @Nullable
     default String getResult(final MPKeyPurpose keyPurpose)
             throws MPKeyUnavailableException, MPAlgorithmException {
         return getResult( keyPurpose, null );
     }
 
-    @Nonnull
+    @Nullable
     default String getResult(final MPKeyPurpose keyPurpose, @Nullable final String keyContext)
             throws MPKeyUnavailableException, MPAlgorithmException {
         return getResult( keyPurpose, keyContext, null );
     }
 
-    @Nonnull
+    @Nullable
     String getResult(MPKeyPurpose keyPurpose, @Nullable String keyContext, @Nullable String state)
             throws MPKeyUnavailableException, MPAlgorithmException;
 
+    /**
+     * @see MPMasterKey#siteResult(String, MPAlgorithm, UnsignedInteger, MPKeyPurpose, String, MPResultType, String)
+     */
+    @Nullable
+    String getResult(MPKeyPurpose keyPurpose, @Nullable String keyContext,
+                     @Nullable UnsignedInteger counter, MPResultType type, @Nullable String state)
+            throws MPKeyUnavailableException, MPAlgorithmException;
+
     @Nonnull
+    String getState(MPKeyPurpose keyPurpose, @Nullable String keyContext,
+                    @Nullable UnsignedInteger counter, MPResultType type, String state)
+            throws MPKeyUnavailableException, MPAlgorithmException;
+
+    @Nullable
     default String getLogin()
             throws MPKeyUnavailableException, MPAlgorithmException {
         return getLogin( null );
     }
 
-    @Nonnull
+    @Nullable
     String getLogin(@Nullable String state)
             throws MPKeyUnavailableException, MPAlgorithmException;
 
@@ -94,7 +107,11 @@ public interface MPSite<Q extends MPQuestion> extends Comparable<MPSite<?>> {
     @Nonnull
     MPUser<?> getUser();
 
-    boolean addQuestion(Q question);
+    @Nonnull
+    Q addQuestion(String keyword);
+
+    @Nonnull
+    Q addQuestion(Q question);
 
     boolean deleteQuestion(Q question);
 

platform-independent/java/model/src/main/java/com/lyndir/masterpassword/model/MPUser.java

@@ -18,7 +18,6 @@
 
 package com.lyndir.masterpassword.model;
 
-import com.google.common.collect.ImmutableCollection;
 import com.lyndir.masterpassword.*;
 import java.util.Collection;
 import javax.annotation.Nonnull;
@@ -39,6 +38,9 @@ public interface MPUser<S extends MPSite<?>> extends Comparable<MPUser<?>> {
     @Nonnull
     String getFullName();
 
+    @Nonnull
+    MPUserPreferences getPreferences();
+
     // - Algorithm
 
     @Nonnull
@@ -46,11 +48,6 @@ public interface MPUser<S extends MPSite<?>> extends Comparable<MPUser<?>> {
 
     void setAlgorithm(MPAlgorithm algorithm);
 
-    @Nullable
-    default MPResultType getDefaultType() {
-        return null;
-    }
-
     @Nullable
     byte[] getKeyID();
 
@@ -100,6 +97,7 @@ public interface MPUser<S extends MPSite<?>> extends Comparable<MPUser<?>> {
 
     // - Relations
 
+    @Nonnull
     S addSite(String siteName);
 
     @Nonnull
@@ -110,12 +108,9 @@ public interface MPUser<S extends MPSite<?>> extends Comparable<MPUser<?>> {
     @Nonnull
     Collection<S> getSites();
 
-    @Nonnull
+    void addListener(Listener listener);
-    ImmutableCollection<S> findSites(@Nullable String query);
 
-    boolean addListener(Listener listener);
+    void removeListener(Listener listener);
-
-    boolean removeListener(Listener listener);
 
     interface Listener {
 

platform-independent/java/model/src/main/java/com/lyndir/masterpassword/model/MPUserPreferences.java

@@ -0,0 +1,19 @@
+package com.lyndir.masterpassword.model;
+
+import com.lyndir.masterpassword.MPResultType;
+import javax.annotation.Nullable;
+
+
+/**
+ * @author lhunath, 2018-10-13
+ */
+public interface MPUserPreferences {
+
+    MPResultType getDefaultType();
+
+    void setDefaultType(@Nullable MPResultType defaultType);
+
+    boolean isHidePasswords();
+
+    void setHidePasswords(boolean hidePasswords);
+}

platform-independent/java/model/src/main/java/com/lyndir/masterpassword/model/impl/Changeable.java

@@ -7,7 +7,7 @@ import java.util.concurrent.Executors;
 /**
  * @author lhunath, 2018-07-08
  */
-public class Changeable {
+public abstract class Changeable {
 
     private static final ExecutorService changeExecutor = Executors.newSingleThreadExecutor();
 
@@ -15,7 +15,9 @@ public class Changeable {
     private       Grouping grouping = Grouping.APPLY;
     private       boolean  changed;
 
-    void setChanged() {
+    protected abstract void onChanged();
+
+    public void setChanged() {
         synchronized (mutex) {
             if (changed)
                 return;
@@ -37,9 +39,6 @@ public class Changeable {
         } );
     }
 
-    protected void onChanged() {
-    }
-
     public void beginChanges() {
         synchronized (mutex) {
             grouping = Grouping.BATCH;

platform-independent/java/model/src/main/java/com/lyndir/masterpassword/model/impl/MPBasicQuestion.java

@@ -22,6 +22,7 @@ import static com.lyndir.lhunath.opal.system.util.StringUtils.*;
 
 import com.lyndir.masterpassword.*;
 import com.lyndir.masterpassword.model.MPQuestion;
+import com.lyndir.masterpassword.model.MPSite;
 import java.util.Objects;
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
@@ -33,14 +34,23 @@ import org.jetbrains.annotations.NotNull;
  */
 public abstract class MPBasicQuestion extends Changeable implements MPQuestion {
 
+    private final MPSite<?> site;
     private final String    keyword;
+
     private MPResultType type;
 
-    protected MPBasicQuestion(final String keyword, final MPResultType type) {
+    protected MPBasicQuestion(final MPSite<?> site, final String keyword, final MPResultType type) {
+        this.site = site;
         this.keyword = keyword;
         this.type = type;
     }
 
+    @Nonnull
+    @Override
+    public MPSite<?> getSite() {
+        return site;
+    }
+
     @Nonnull
     @Override
     public String getKeyword() {
@@ -55,14 +65,14 @@ public abstract class MPBasicQuestion extends Changeable implements MPQuestion {
 
     @Override
     public void setType(final MPResultType type) {
-        if (Objects.equals(this.type, type))
+        if (this.type == type)
             return;
 
         this.type = type;
         setChanged();
     }
 
-    @Nonnull
+    @Nullable
     @Override
     public String getAnswer(@Nullable final String state)
             throws MPKeyUnavailableException, MPAlgorithmException {
@@ -70,15 +80,10 @@ public abstract class MPBasicQuestion extends Changeable implements MPQuestion {
         return getSite().getResult( MPKeyPurpose.Recovery, getKeyword(), null, getType(), state );
     }
 
-    @Nonnull
-    @Override
-    public abstract MPBasicSite<?, ?> getSite();
-
     @Override
     protected void onChanged() {
-        super.onChanged();
+        if (site instanceof Changeable)
-
+            ((Changeable) site).setChanged();
-        getSite().setChanged();
     }
 
     @Override

platform-independent/java/model/src/main/java/com/lyndir/masterpassword/model/impl/MPBasicSite.java

@@ -35,9 +35,9 @@ import javax.annotation.Nullable;
 public abstract class MPBasicSite<U extends MPUser<?>, Q extends MPQuestion> extends Changeable
         implements MPSite<Q> {
 
-    private final Collection<Q> questions = new LinkedHashSet<>();
     private final U             user;
     private final String        siteName;
+    private final Collection<Q> questions = new TreeSet<>();
 
     private MPAlgorithm     algorithm;
     private UnsignedInteger counter;
@@ -55,17 +55,20 @@ public abstract class MPBasicSite<U extends MPUser<?>, Q extends MPQuestion> ext
         this.siteName = siteName;
         this.algorithm = (algorithm != null)? algorithm: this.user.getAlgorithm();
         this.counter = (counter != null)? counter: this.algorithm.mpw_default_counter();
-        this.resultType = (resultType != null)? resultType:
+        this.resultType = (resultType != null)? resultType: this.user.getPreferences().getDefaultType();
-                ifNotNullElse( this.user.getDefaultType(), this.algorithm.mpw_default_result_type() );
         this.loginType = (loginType != null)? loginType: this.algorithm.mpw_default_login_type();
     }
 
+    // - Meta
+
     @Nonnull
     @Override
     public String getSiteName() {
         return siteName;
     }
 
+    // - Algorithm
+
     @Nonnull
     @Override
     public MPAlgorithm getAlgorithm() {
@@ -104,7 +107,7 @@ public abstract class MPBasicSite<U extends MPUser<?>, Q extends MPQuestion> ext
 
     @Override
     public void setResultType(final MPResultType resultType) {
-        if (Objects.equals( this.resultType, resultType ))
+        if (this.resultType == resultType)
             return;
 
         this.resultType = resultType;
@@ -119,14 +122,14 @@ public abstract class MPBasicSite<U extends MPUser<?>, Q extends MPQuestion> ext
 
     @Override
     public void setLoginType(@Nullable final MPResultType loginType) {
-        if (Objects.equals( this.loginType, loginType ))
+        if (this.loginType == loginType)
             return;
 
         this.loginType = ifNotNullElse( loginType, getAlgorithm().mpw_default_login_type() );
         setChanged();
     }
 
-    @Nonnull
+    @Nullable
     @Override
     public String getResult(final MPKeyPurpose keyPurpose, @Nullable final String keyContext, @Nullable final String state)
             throws MPKeyUnavailableException, MPAlgorithmException {
@@ -134,7 +137,9 @@ public abstract class MPBasicSite<U extends MPUser<?>, Q extends MPQuestion> ext
         return getResult( keyPurpose, keyContext, getCounter(), getResultType(), state );
     }
 
-    protected String getResult(final MPKeyPurpose keyPurpose, @Nullable final String keyContext,
+    @Nullable
+    @Override
+    public String getResult(final MPKeyPurpose keyPurpose, @Nullable final String keyContext,
                             @Nullable final UnsignedInteger counter, final MPResultType type, @Nullable final String state)
             throws MPKeyUnavailableException, MPAlgorithmException {
 
@@ -143,7 +148,9 @@ public abstract class MPBasicSite<U extends MPUser<?>, Q extends MPQuestion> ext
                 keyPurpose, keyContext, type, state );
     }
 
-    protected String getState(final MPKeyPurpose keyPurpose, @Nullable final String keyContext,
+    @Nonnull
+    @Override
+    public String getState(final MPKeyPurpose keyPurpose, @Nullable final String keyContext,
                            @Nullable final UnsignedInteger counter, final MPResultType type, final String state)
             throws MPKeyUnavailableException, MPAlgorithmException {
 
@@ -152,7 +159,7 @@ public abstract class MPBasicSite<U extends MPUser<?>, Q extends MPQuestion> ext
                 keyPurpose, keyContext, type, state );
     }
 
-    @Nonnull
+    @Nullable
     @Override
     public String getLogin(@Nullable final String state)
             throws MPKeyUnavailableException, MPAlgorithmException {
@@ -160,13 +167,21 @@ public abstract class MPBasicSite<U extends MPUser<?>, Q extends MPQuestion> ext
         return getResult( MPKeyPurpose.Identification, null, null, getLoginType(), state );
     }
 
+    // - Relations
+
+    @Nonnull
     @Override
-    public boolean addQuestion(final Q question) {
+    public U getUser() {
-        if (!questions.add( question ))
+        return user;
-            return false;
+    }
+
+    @Nonnull
+    @Override
+    public Q addQuestion(final Q question) {
+        questions.add( question );
 
         setChanged();
-        return true;
+        return question;
     }
 
     @Override
@@ -184,16 +199,8 @@ public abstract class MPBasicSite<U extends MPUser<?>, Q extends MPQuestion> ext
         return Collections.unmodifiableCollection( questions );
     }
 
-    @Nonnull
-    @Override
-    public U getUser() {
-        return user;
-    }
-
     @Override
     protected void onChanged() {
-        super.onChanged();
-
         if (user instanceof Changeable)
             ((Changeable) user).setChanged();
     }

platform-independent/java/model/src/main/java/com/lyndir/masterpassword/model/impl/MPBasicUser.java

@@ -20,8 +20,6 @@ package com.lyndir.masterpassword.model.impl;
 
 import static com.lyndir.lhunath.opal.system.util.StringUtils.*;
 
-import com.google.common.collect.ImmutableCollection;
-import com.google.common.collect.ImmutableSortedSet;
 import com.lyndir.lhunath.opal.system.CodeUtils;
 import com.lyndir.lhunath.opal.system.logging.Logger;
 import com.lyndir.masterpassword.*;
@@ -47,7 +45,7 @@ public abstract class MPBasicUser<S extends MPBasicSite<?, ?>> extends Changeabl
     @Nullable
     protected     MPMasterKey masterKey;
 
-    private final Map<String, S> sites = new LinkedHashMap<>();
+    private final Set<S> sites = new TreeSet<>();
 
     protected MPBasicUser(final String fullName, final MPAlgorithm algorithm) {
         this( 0, fullName, algorithm );
@@ -79,6 +77,12 @@ public abstract class MPBasicUser<S extends MPBasicSite<?, ?>> extends Changeabl
         return fullName;
     }
 
+    @Nonnull
+    @Override
+    public MPUserPreferences getPreferences() {
+        return new MPBasicUserPreferences<MPBasicUser<?>>( this );
+    }
+
     @Nonnull
     @Override
     public MPAlgorithm getAlgorithm() {
@@ -177,7 +181,7 @@ public abstract class MPBasicUser<S extends MPBasicSite<?, ?>> extends Changeabl
     @Nonnull
     @Override
     public S addSite(final S site) {
-        sites.put( site.getSiteName(), site );
+        sites.add( site );
 
         setChanged();
         return site;
@@ -185,7 +189,7 @@ public abstract class MPBasicUser<S extends MPBasicSite<?, ?>> extends Changeabl
 
     @Override
     public boolean deleteSite(final MPSite<?> site) {
-        if (!sites.values().remove( site ))
+        if (!sites.remove( site ))
             return false;
 
         setChanged();
@@ -195,35 +199,21 @@ public abstract class MPBasicUser<S extends MPBasicSite<?, ?>> extends Changeabl
     @Nonnull
     @Override
     public Collection<S> getSites() {
-        return Collections.unmodifiableCollection( sites.values() );
+        return Collections.unmodifiableCollection( sites );
-    }
-
-    @Nonnull
-    @Override
-    public ImmutableCollection<S> findSites(@Nullable final String query) {
-        ImmutableSortedSet.Builder<S> results = ImmutableSortedSet.naturalOrder();
-        if (query != null)
-            for (final S site : getSites())
-                if (site.getSiteName().startsWith( query ))
-                    results.add( site );
-
-        return results.build();
     }
 
     @Override
-    public boolean addListener(final Listener listener) {
+    public void addListener(final Listener listener) {
-        return listeners.add( listener );
+        listeners.add( listener );
     }
 
     @Override
-    public boolean removeListener(final Listener listener) {
+    public void removeListener(final Listener listener) {
-        return listeners.remove( listener );
+        listeners.remove( listener );
     }
 
     @Override
     protected void onChanged() {
-        super.onChanged();
-
         for (final Listener listener : listeners)
             listener.onUserUpdated( this );
     }

platform-independent/java/model/src/main/java/com/lyndir/masterpassword/model/impl/MPBasicUserPreferences.java

@@ -0,0 +1,46 @@
+package com.lyndir.masterpassword.model.impl;
+
+import com.lyndir.masterpassword.MPResultType;
+import com.lyndir.masterpassword.model.MPUserPreferences;
+import javax.annotation.Nullable;
+
+
+/**
+ * @author lhunath, 2018-10-13
+ */
+public class MPBasicUserPreferences<U extends MPBasicUser<?>> implements MPUserPreferences {
+
+    private final U user;
+
+    @Nullable
+    private MPResultType defaultType;
+    private boolean      hidePasswords;
+
+    public MPBasicUserPreferences(final U user) {
+        this.user = user;
+    }
+
+    protected U getUser() {
+        return user;
+    }
+
+    @Override
+    public MPResultType getDefaultType() {
+        return (defaultType != null)? defaultType: user.getAlgorithm().mpw_default_result_type();
+    }
+
+    @Override
+    public void setDefaultType(@Nullable final MPResultType defaultType) {
+        this.defaultType = defaultType;
+    }
+
+    @Override
+    public boolean isHidePasswords() {
+        return hidePasswords;
+    }
+
+    @Override
+    public void setHidePasswords(final boolean hidePasswords) {
+        this.hidePasswords = hidePasswords;
+    }
+}

platform-independent/java/model/src/main/java/com/lyndir/masterpassword/model/impl/MPFileQuestion.java

@@ -21,7 +21,6 @@ package com.lyndir.masterpassword.model.impl;
 import static com.lyndir.lhunath.opal.system.util.ObjectUtils.*;
 
 import com.lyndir.masterpassword.*;
-import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
 
 
@@ -30,16 +29,14 @@ import javax.annotation.Nullable;
  */
 public class MPFileQuestion extends MPBasicQuestion {
 
-    private final MPFileSite site;
-
     @Nullable
     private String answerState;
 
+    @SuppressWarnings("TypeMayBeWeakened")
     public MPFileQuestion(final MPFileSite site, final String keyword,
                           @Nullable final MPResultType type, @Nullable final String answerState) {
-        super( keyword, ifNotNullElse( type, site.getAlgorithm().mpw_default_answer_type() ) );
+        super( site, keyword, ifNotNullElse( type, site.getAlgorithm().mpw_default_answer_type() ) );
 
-        this.site = site;
         this.answerState = answerState;
     }
 
@@ -48,6 +45,8 @@ public class MPFileQuestion extends MPBasicQuestion {
         return answerState;
     }
 
+    @Nullable
+    @Override
     public String getAnswer()
             throws MPKeyUnavailableException, MPAlgorithmException {
         return getAnswer( answerState );
@@ -66,9 +65,8 @@ public class MPFileQuestion extends MPBasicQuestion {
         setChanged();
     }
 
-    @Nonnull
+    public void use() {
-    @Override
+        if (getSite() instanceof MPFileSite)
-    public MPFileSite getSite() {
+            ((MPFileSite) getSite()).use();
-        return site;
     }
 }

platform-independent/java/model/src/main/java/com/lyndir/masterpassword/model/impl/MPFileSite.java

@@ -93,7 +93,7 @@ public class MPFileSite extends MPBasicSite<MPFileUser, MPFileQuestion> {
         setChanged();
     }
 
-    @Nonnull
+    @Nullable
     @Override
     public String getResult(final MPKeyPurpose keyPurpose, @Nullable final String keyContext)
             throws MPKeyUnavailableException, MPAlgorithmException {
@@ -101,7 +101,7 @@ public class MPFileSite extends MPBasicSite<MPFileUser, MPFileQuestion> {
         return getResult( keyPurpose, keyContext, getResultState() );
     }
 
-    @Nonnull
+    @Nullable
     @Override
     public String getLogin()
             throws MPKeyUnavailableException, MPAlgorithmException {
@@ -145,6 +145,12 @@ public class MPFileSite extends MPBasicSite<MPFileUser, MPFileQuestion> {
         setChanged();
     }
 
+    @Nonnull
+    @Override
+    public MPFileQuestion addQuestion(final String keyword) {
+        return addQuestion( new MPFileQuestion( this, keyword, null, null ) );
+    }
+
     @Override
     public int compareTo(@Nonnull final MPSite<?> o) {
         int comparison = (o instanceof MPFileSite)? ((MPFileSite) o).getLastUsed().compareTo( getLastUsed() ): 0;

platform-independent/java/model/src/main/java/com/lyndir/masterpassword/model/impl/MPFileUser.java

@@ -20,11 +20,9 @@ package com.lyndir.masterpassword.model.impl;
 
 import com.lyndir.lhunath.opal.system.logging.Logger;
 import com.lyndir.masterpassword.*;
-import com.lyndir.masterpassword.model.MPIncorrectMasterPasswordException;
+import com.lyndir.masterpassword.model.*;
-import com.lyndir.masterpassword.model.MPUser;
 import java.io.File;
 import java.io.IOException;
-import java.util.Objects;
 import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
 import org.joda.time.Instant;
@@ -41,44 +39,48 @@ public class MPFileUser extends MPBasicUser<MPFileSite> {
 
     @Nullable
     private byte[]                   keyID;
-    private File                     path;
+    private File                     file;
     private MPMarshalFormat          format;
     private MPMarshaller.ContentMode contentMode;
-
-    private MPResultType    defaultType;
     private ReadableInstant          lastUsed;
     private boolean                  complete;
 
+    private final MPFileUserPreferences preferences;
+
     @Nullable
     public static MPFileUser load(final File file)
             throws IOException, MPMarshalException {
         for (final MPMarshalFormat format : MPMarshalFormat.values())
-            if (file.getName().endsWith( format.fileSuffix() ))
+            if (format.matches( file ))
                 return format.unmarshaller().readUser( file );
 
         return null;
     }
 
-    public MPFileUser(final String fullName, final File path) {
+    public MPFileUser(final String fullName, final File location) {
-        this( fullName, null, MPAlgorithm.Version.CURRENT.getAlgorithm(), path );
+        this( fullName, null, MPAlgorithm.Version.CURRENT.getAlgorithm(), location );
     }
 
-    public MPFileUser(final String fullName, @Nullable final byte[] keyID, final MPAlgorithm algorithm, final File path) {
+    public MPFileUser(final String fullName, @Nullable final byte[] keyID, final MPAlgorithm algorithm, final File location) {
-        this( fullName, keyID, algorithm, 0, null, new Instant(),
+        this( fullName, keyID, algorithm, 0, null, new Instant(), false,
-              MPMarshaller.ContentMode.PROTECTED, MPMarshalFormat.DEFAULT, path );
+              MPMarshaller.ContentMode.PROTECTED, MPMarshalFormat.DEFAULT, location );
     }
 
-    public MPFileUser(final String fullName, @Nullable final byte[] keyID, final MPAlgorithm algorithm,
+    public MPFileUser(final String fullName, @Nullable final byte[] keyID, final MPAlgorithm algorithm, final int avatar,
-                      final int avatar, @Nullable final MPResultType defaultType, final ReadableInstant lastUsed,
+                      @Nullable final MPResultType defaultType, final ReadableInstant lastUsed, final boolean hidePasswords,
-                      final MPMarshaller.ContentMode contentMode, final MPMarshalFormat format, final File path) {
+                      final MPMarshaller.ContentMode contentMode, final MPMarshalFormat format, final File location) {
         super( avatar, fullName, algorithm );
 
         this.keyID = (keyID != null)? keyID.clone(): null;
-        this.defaultType = (defaultType != null)? defaultType: algorithm.mpw_default_result_type();
         this.lastUsed = lastUsed;
-        this.path = path;
+        this.preferences = new MPFileUserPreferences( this, defaultType, hidePasswords );
         this.format = format;
         this.contentMode = contentMode;
+
+        if (location.isDirectory())
+            this.file = new File( location, getFullName() + getFormat().fileSuffix() );
+        else
+            this.file = location;
     }
 
     @Nullable
@@ -87,8 +89,10 @@ public class MPFileUser extends MPBasicUser<MPFileSite> {
         return (keyID == null)? null: keyID.clone();
     }
 
-    public void setPath(final File path) {
+    @Nonnull
-        this.path = path;
+    @Override
+    public MPUserPreferences getPreferences() {
+        return preferences;
     }
 
     @Override
@@ -115,39 +119,18 @@ public class MPFileUser extends MPBasicUser<MPFileSite> {
         return format;
     }
 
-    public void setFormat(final MPMarshalFormat format) {
-        if (Objects.equals( this.format, format ))
-            return;
-
-        this.format = format;
-        setChanged();
-    }
-
     public MPMarshaller.ContentMode getContentMode() {
         return contentMode;
     }
 
     public void setContentMode(final MPMarshaller.ContentMode contentMode) {
-        if (Objects.equals( this.contentMode, contentMode ))
+        if (this.contentMode == contentMode)
             return;
 
         this.contentMode = contentMode;
         setChanged();
     }
 
-    @Override
-    public MPResultType getDefaultType() {
-        return defaultType;
-    }
-
-    public void setDefaultType(final MPResultType defaultType) {
-        if (Objects.equals( this.defaultType, defaultType ))
-            return;
-
-        this.defaultType = defaultType;
-        setChanged();
-    }
-
     public ReadableInstant getLastUsed() {
         return lastUsed;
     }
@@ -166,7 +149,47 @@ public class MPFileUser extends MPBasicUser<MPFileSite> {
     }
 
     public File getFile() {
-        return new File( path, getFullName() + getFormat().fileSuffix() );
+        return file;
+    }
+
+    public void migrateTo(final MPMarshalFormat format) {
+        if (this.format == format)
+            return;
+
+        migrateTo( file.getParentFile(), format );
+    }
+
+    public void migrateTo(final File path) {
+        migrateTo( path, format );
+    }
+
+    /**
+     * Move the file for this user to the given path using a standard user-derived filename (ie. {@code [full name].[format suffix]})
+     *
+     * The user's old file is either moved to the new or deleted.  If the user's file was already at the destination, it doesn't change.
+     * If a file already exists at the destination, it is overwritten.
+     */
+    public void migrateTo(final File path, final MPMarshalFormat newFormat) {
+        MPMarshalFormat oldFormat = format;
+        File            oldFile   = file, newFile = new File( path, getFullName() + newFormat.fileSuffix() );
+
+        // If the format hasn't changed, migrate by moving the file: the contents doesn't need to change.
+        if ((oldFormat == newFormat) && !oldFile.equals( newFile ) && oldFile.exists())
+            if (!oldFile.renameTo( newFile ))
+                logger.wrn( "Couldn't move %s to %s for migration.", oldFile, newFile );
+
+        this.format = newFormat;
+        this.file = newFile;
+
+        // If the format has changed, save the new format into the new file and delete the old file.  Revert if the user cannot be saved.
+        if ((oldFormat != newFormat) && !oldFile.equals( newFile ))
+            if (save()) {
+                if (oldFile.exists() && !oldFile.delete())
+                    logger.wrn( "Couldn't delete %s after migration.", oldFile );
+            } else {
+                this.format = oldFormat;
+                this.file = oldFile;
+            }
     }
 
     @Override
@@ -187,10 +210,16 @@ public class MPFileUser extends MPBasicUser<MPFileSite> {
         }
     }
 
-    public void save() {
+    /**
+     * @return {@code false} if the user is not fully loaded (complete), authenticated, or an issue prevented the marshalling.
+     */
+    public boolean save() {
+        if (!isComplete())
+            return false;
+
         try {
-            if (isComplete())
             getFormat().marshaller().marshall( this );
+            return true;
         }
         catch (final MPKeyUnavailableException e) {
             logger.wrn( e, "Cannot write out changes for unauthenticated user: %s.", this );
@@ -198,6 +227,8 @@ public class MPFileUser extends MPBasicUser<MPFileSite> {
         catch (final IOException | MPMarshalException | MPAlgorithmException e) {
             logger.err( e, "Unable to write out changes for user: %s", this );
         }
+
+        return false;
     }
 
     @Override
@@ -207,6 +238,7 @@ public class MPFileUser extends MPBasicUser<MPFileSite> {
         super.reset();
     }
 
+    @Nonnull
     @Override
     public MPFileSite addSite(final String siteName) {
         return addSite( new MPFileSite( this, siteName ) );

platform-independent/java/model/src/main/java/com/lyndir/masterpassword/model/impl/MPFileUserManager.java

@@ -18,11 +18,9 @@
 
 package com.lyndir.masterpassword.model.impl;
 
-import static com.lyndir.lhunath.opal.system.util.ObjectUtils.*;
-
 import com.google.common.collect.ImmutableSortedSet;
 import com.lyndir.lhunath.opal.system.logging.Logger;
-import com.lyndir.masterpassword.model.MPConstants;
+import com.lyndir.masterpassword.model.MPConfig;
 import java.io.File;
 import java.io.IOException;
 import java.util.*;
@@ -39,18 +37,7 @@ public class MPFileUserManager {
 
     @SuppressWarnings("UnusedDeclaration")
     private static final Logger            logger   = Logger.get( MPFileUserManager.class );
-    private static final MPFileUserManager instance;
+    private static final MPFileUserManager instance = create( MPConfig.get().rcDir() );
-
-    static {
-        String rcDir = System.getenv( MPConstants.env_rcDir );
-
-        if (rcDir != null)
-            instance = create( new File( rcDir ) );
-        else {
-            String home = ifNotNullElseNullable( System.getProperty( "user.home" ), System.getenv( "HOME" ) );
-            instance = create( new File( home, ".mpw.d" ) );
-        }
-    }
 
     private final Collection<Listener>    listeners  = new CopyOnWriteArraySet<>();
     private final Map<String, MPFileUser> userByName = new HashMap<>();
@@ -66,6 +53,7 @@ public class MPFileUserManager {
 
     protected MPFileUserManager(final File path) {
         this.path = path;
+        reload();
     }
 
     public void reload() {
@@ -77,14 +65,13 @@ public class MPFileUserManager {
             return;
         }
 
+        for (final MPMarshalFormat format : MPMarshalFormat.values())
             for (final File file : pathFiles)
+                if (format.matches( file ))
                     try {
                         MPFileUser user = MPFileUser.load( file );
-                if (user != null) {
+                        if (user != null)
-                    MPFileUser previousUser = userByName.put( user.getFullName(), user );
+                            add( user );
-                    if ((previousUser != null) && (previousUser.getFormat().ordinal() > user.getFormat().ordinal()))
-                        userByName.put( previousUser.getFullName(), previousUser );
-                }
                     }
                     catch (final IOException | MPMarshalException e) {
                         logger.err( e, "Couldn't read user from: %s", file );
@@ -98,12 +85,19 @@ public class MPFileUserManager {
     }
 
     public MPFileUser add(final MPFileUser user) {
-        user.setPath( getPath() );
+        // We migrate in two steps to allow the first to complete even if the user is not in the right state to complete the latter.
-        user.save();
+        user.migrateTo( getPath() );
+        user.migrateTo( MPMarshalFormat.DEFAULT );
 
         MPFileUser oldUser = userByName.put( user.getFullName(), user );
-        if (oldUser != null)
+        if (oldUser != null) {
             oldUser.invalidate();
+
+            // Delete old user, it is replaced by the new one.
+            if (!oldUser.getFile().equals( user.getFile() ) && oldUser.getFile().exists())
+                if (!oldUser.getFile().delete())
+                    logger.err( "Couldn't delete file: %s, after replacing with: %s", oldUser.getFile(), user.getFile() );
+        }
         fireUpdated();
 
         return user;
@@ -128,12 +122,13 @@ public class MPFileUserManager {
         return ImmutableSortedSet.copyOf( userByName.values() );
     }
 
-    public boolean addListener(final Listener listener) {
+    public void addListener(final Listener listener) {
-        return listeners.add( listener );
+        if (listeners.add( listener ))
+            listener.onFilesUpdated( getFiles() );
     }
 
-    public boolean removeListener(final Listener listener) {
+    public void removeListener(final Listener listener) {
-        return listeners.remove( listener );
+        listeners.remove( listener );
     }
 
     private void fireUpdated() {
@@ -141,7 +136,6 @@ public class MPFileUserManager {
             return;
 
         ImmutableSortedSet<MPFileUser> files = getFiles();
-
         for (final Listener listener : listeners)
             listener.onFilesUpdated( files );
     }

platform-independent/java/model/src/main/java/com/lyndir/masterpassword/model/impl/MPFileUserPreferences.java

@@ -0,0 +1,37 @@
+package com.lyndir.masterpassword.model.impl;
+
+import com.lyndir.masterpassword.MPResultType;
+import java.util.Objects;
+import javax.annotation.Nullable;
+
+
+/**
+ * @author lhunath, 2018-10-13
+ */
+public class MPFileUserPreferences extends MPBasicUserPreferences<MPFileUser> {
+
+    public MPFileUserPreferences(final MPFileUser user, @Nullable final MPResultType defaultType, final boolean hidePasswords) {
+        super( user );
+
+        setDefaultType( defaultType );
+        setHidePasswords( hidePasswords );
+    }
+
+    @Override
+    public void setDefaultType(@Nullable final MPResultType defaultType) {
+        if (getDefaultType() == defaultType)
+            return;
+
+        super.setDefaultType( defaultType );
+        getUser().setChanged();
+    }
+
+    @Override
+    public void setHidePasswords(final boolean hidePasswords) {
+        if (Objects.equals( isHidePasswords(), hidePasswords ))
+            return;
+
+        super.setHidePasswords( hidePasswords );
+        getUser().setChanged();
+    }
+}

platform-independent/java/model/src/main/java/com/lyndir/masterpassword/model/impl/MPFlatMarshaller.java

@@ -25,7 +25,7 @@ import com.google.common.base.Charsets;
 import com.google.common.io.CharSink;
 import com.lyndir.masterpassword.MPAlgorithmException;
 import com.lyndir.masterpassword.MPKeyUnavailableException;
-import com.lyndir.masterpassword.model.MPConstants;
+import com.lyndir.masterpassword.model.MPModelConstants;
 import java.io.*;
 import org.joda.time.Instant;
 
@@ -50,13 +50,13 @@ public class MPFlatMarshaller implements MPMarshaller {
         content.append( "# \n" );
         content.append( "##\n" );
         content.append( "# Format: " ).append( FORMAT ).append( '\n' );
-        content.append( "# Date: " ).append( MPConstants.dateTimeFormatter.print( new Instant() ) ).append( '\n' );
+        content.append( "# Date: " ).append( MPModelConstants.dateTimeFormatter.print( new Instant() ) ).append( '\n' );
         content.append( "# User Name: " ).append( user.getFullName() ).append( '\n' );
         content.append( "# Full Name: " ).append( user.getFullName() ).append( '\n' );
         content.append( "# Avatar: " ).append( user.getAvatar() ).append( '\n' );
         content.append( "# Key ID: " ).append( user.exportKeyID() ).append( '\n' );
         content.append( "# Algorithm: " ).append( user.getAlgorithm().version().toInt() ).append( '\n' );
-        content.append( "# Default Type: " ).append( user.getDefaultType().getType() ).append( '\n' );
+        content.append( "# Default Type: " ).append( user.getPreferences().getDefaultType().getType() ).append( '\n' );
         content.append( "# Passwords: " ).append( user.getContentMode().name() ).append( '\n' );
         content.append( "##\n" );
         content.append( "#\n" );
@@ -72,7 +72,7 @@ public class MPFlatMarshaller implements MPMarshaller {
             }
 
             content.append( strf( "%s  %8d  %8s  %25s\t%25s\t%s\n", //
-                                  MPConstants.dateTimeFormatter.print( site.getLastUsed() ), // lastUsed
+                                  MPModelConstants.dateTimeFormatter.print( site.getLastUsed() ), // lastUsed
                                   site.getUses(), // uses
                                   strf( "%d:%d:%d", //
                                         site.getResultType().getType(), // type

platform-independent/java/model/src/main/java/com/lyndir/masterpassword/model/impl/MPFlatUnmarshaller.java

@@ -25,8 +25,8 @@ import com.lyndir.lhunath.opal.system.CodeUtils;
 import com.lyndir.lhunath.opal.system.logging.Logger;
 import com.lyndir.lhunath.opal.system.util.ConversionUtils;
 import com.lyndir.masterpassword.*;
-import com.lyndir.masterpassword.model.MPConstants;
 import com.lyndir.masterpassword.model.MPIncorrectMasterPasswordException;
+import com.lyndir.masterpassword.model.MPModelConstants;
 import java.io.*;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
@@ -56,6 +56,7 @@ public class MPFlatUnmarshaller implements MPUnmarshaller {
             int          mpVersion    = 0, avatar = 0;
             boolean      clearContent = false, headerStarted = false;
             MPResultType defaultType  = null;
+            Instant      date         = null;
 
             //noinspection HardcodedLineSeparator
             for (final String line : CharStreams.readLines( reader ))
@@ -66,10 +67,11 @@ public class MPFlatUnmarshaller implements MPUnmarshaller {
                         headerStarted = true;
                     else if ((fullName != null) && (keyID != null))
                         // Ends the header.
-                        return new MPFileUser( fullName, keyID, MPAlgorithm.Version.fromInt( mpVersion ).getAlgorithm(),
+                        return new MPFileUser(
-                                               avatar, defaultType, new Instant( 0 ),
+                                fullName, keyID, MPAlgorithm.Version.fromInt( mpVersion ).getAlgorithm(), avatar, defaultType,
-                                               clearContent? MPMarshaller.ContentMode.VISIBLE: MPMarshaller.ContentMode.PROTECTED,
+                                date, false, clearContent? MPMarshaller.ContentMode.VISIBLE: MPMarshaller.ContentMode.PROTECTED,
-                                               MPMarshalFormat.Flat, file.getParentFile() );
+                                MPMarshalFormat.Flat, file
+                        );
                 }
 
                 // Comment.
@@ -91,6 +93,8 @@ public class MPFlatUnmarshaller implements MPUnmarshaller {
                                 clearContent = "visible".equalsIgnoreCase( value );
                             else if ("Default Type".equalsIgnoreCase( name ))
                                 defaultType = MPResultType.forType( ConversionUtils.toIntegerNN( value ) );
+                            else if ("Date".equalsIgnoreCase( name ))
+                                date = MPModelConstants.dateTimeFormatter.parseDateTime( value ).toInstant();
                         }
                     }
                 }
@@ -150,28 +154,32 @@ public class MPFlatUnmarshaller implements MPUnmarshaller {
                         MPFileSite site;
                         switch (importFormat) {
                             case 0:
-                                site = new MPFileSite( user, //
+                                site = new MPFileSite(
-                                                       siteMatcher.group( 5 ), MPAlgorithm.Version.fromInt( ConversionUtils.toIntegerNN(
+                                        user, siteMatcher.group( 5 ),
+                                        MPAlgorithm.Version.fromInt( ConversionUtils.toIntegerNN(
                                                 colon.matcher( siteMatcher.group( 4 ) ).replaceAll( "" ) ) ).getAlgorithm(),
                                         user.getAlgorithm().mpw_default_counter(),
                                         MPResultType.forType( ConversionUtils.toIntegerNN( siteMatcher.group( 3 ) ) ),
                                         clearContent? null: siteMatcher.group( 6 ),
                                         null, null, null, ConversionUtils.toIntegerNN( siteMatcher.group( 2 ) ),
-                                                       MPConstants.dateTimeFormatter.parseDateTime( siteMatcher.group( 1 ) ).toInstant() );
+                                        MPModelConstants.dateTimeFormatter.parseDateTime( siteMatcher.group( 1 ) ).toInstant() );
                                 if (clearContent)
                                     site.setSitePassword( site.getResultType(), siteMatcher.group( 6 ) );
                                 break;
 
                             case 1:
-                                site = new MPFileSite( user, //
+                                site = new MPFileSite(
-                                                       siteMatcher.group( 7 ), MPAlgorithm.Version.fromInt( ConversionUtils.toIntegerNN(
+                                        user, siteMatcher.group( 7 ),
+                                        MPAlgorithm.Version.fromInt( ConversionUtils.toIntegerNN(
                                                 colon.matcher( siteMatcher.group( 4 ) ).replaceAll( "" ) ) ).getAlgorithm(),
-                                                       UnsignedInteger.valueOf( colon.matcher( siteMatcher.group( 5 ) ).replaceAll( "" ) ),
+                                        UnsignedInteger.valueOf(
+                                                colon.matcher( siteMatcher.group( 5 ) ).replaceAll( "" ) ),
                                         MPResultType.forType( ConversionUtils.toIntegerNN( siteMatcher.group( 3 ) ) ),
                                         clearContent? null: siteMatcher.group( 8 ),
-                                                       MPResultType.GeneratedName, clearContent? null: siteMatcher.group( 6 ), null,
+                                        MPResultType.GeneratedName,
-                                                       ConversionUtils.toIntegerNN( siteMatcher.group( 2 ) ),
+                                        clearContent? null: siteMatcher.group( 6 ),
-                                                       MPConstants.dateTimeFormatter.parseDateTime( siteMatcher.group( 1 ) ).toInstant() );
+                                        null, ConversionUtils.toIntegerNN( siteMatcher.group( 2 ) ),
+                                        MPModelConstants.dateTimeFormatter.parseDateTime( siteMatcher.group( 1 ) ).toInstant() );
                                 if (clearContent) {
                                     site.setSitePassword( site.getResultType(), siteMatcher.group( 8 ) );
                                     site.setLoginName( MPResultType.StoredPersonal, siteMatcher.group( 6 ) );

platform-independent/java/model/src/main/java/com/lyndir/masterpassword/model/impl/MPJSONAnyObject.java

@@ -19,6 +19,9 @@
 package com.lyndir.masterpassword.model.impl;
 
 import com.fasterxml.jackson.annotation.*;
+import com.fasterxml.jackson.core.util.DefaultPrettyPrinter;
+import com.fasterxml.jackson.core.util.Separators;
+import com.fasterxml.jackson.databind.ObjectMapper;
 import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
 import java.util.*;
 
@@ -27,31 +30,59 @@ import java.util.*;
  * @author lhunath, 2018-05-14
  */
 @JsonInclude(value = JsonInclude.Include.CUSTOM, valueFilter = MPJSONAnyObject.MPJSONEmptyValue.class)
-class MPJSONAnyObject {
+public class MPJSONAnyObject {
+
+    @SuppressWarnings("serial")
+    protected static final ObjectMapper objectMapper = new ObjectMapper() {
+        {
+            setDefaultPrettyPrinter( new DefaultPrettyPrinter() {
+                @Override
+                public DefaultPrettyPrinter withSeparators(final Separators separators) {
+                    super.withSeparators( separators );
+                    _objectFieldValueSeparatorWithSpaces = separators.getObjectFieldValueSeparator() + " ";
+                    return this;
+                }
+            } );
+            setVisibility( PropertyAccessor.ALL, JsonAutoDetect.Visibility.NONE );
+            setVisibility( PropertyAccessor.FIELD, JsonAutoDetect.Visibility.NON_PRIVATE );
+        }
+    };
 
     @JsonAnySetter
     final Map<String, Object> any = new LinkedHashMap<>();
 
     @JsonAnyGetter
-    public Map<String, Object> getAny() {
+    public Map<String, Object> any() {
         return Collections.unmodifiableMap( any );
     }
 
+    @SuppressWarnings("unchecked")
+    public <V> V any(final String key) {
+        return (V) any.get( key );
+    }
+
     @SuppressWarnings("EqualsAndHashcode")
     public static class MPJSONEmptyValue {
 
         @Override
-        @SuppressWarnings({ "ChainOfInstanceofChecks", "Contract" })
+        @SuppressWarnings("EqualsWhichDoesntCheckParameterClass")
         @SuppressFBWarnings({ "EQ_UNUSUAL", "EQ_CHECK_FOR_OPERAND_NOT_COMPATIBLE_WITH_THIS", "HE_EQUALS_USE_HASHCODE" })
         public boolean equals(final Object obj) {
+            return isEmpty( obj );
+        }
+
+        @SuppressWarnings({ "ChainOfInstanceofChecks", "ConstantConditions" })
+        private static boolean isEmpty(final Object obj) {
+            if (obj == null)
+                return true;
             if (obj instanceof Collection<?>)
                 return ((Collection<?>) obj).isEmpty();
             if (obj instanceof Map<?, ?>)
                 return ((Map<?, ?>) obj).isEmpty();
-            if (obj instanceof MPJSONFile.Site.Ext)
+            if (obj instanceof MPJSONAnyObject)
-                return ((MPJSONAnyObject) obj).any.isEmpty();
+                return ((MPJSONAnyObject) obj).any.isEmpty() && (objectMapper.valueToTree( obj ).size() == 0);
 
-            return obj == null;
+            return false;
         }
     }
 }

platform-independent/java/model/src/main/java/com/lyndir/masterpassword/model/impl/MPJSONFile.java

@@ -28,8 +28,8 @@ import com.fasterxml.jackson.databind.ObjectMapper;
 import com.google.common.primitives.UnsignedInteger;
 import com.lyndir.lhunath.opal.system.CodeUtils;
 import com.lyndir.masterpassword.*;
-import com.lyndir.masterpassword.model.MPConstants;
 import com.lyndir.masterpassword.model.MPIncorrectMasterPasswordException;
+import com.lyndir.masterpassword.model.MPModelConstants;
 import edu.umd.cs.findbugs.annotations.SuppressFBWarnings;
 import java.io.File;
 import java.util.LinkedHashMap;
@@ -44,22 +44,6 @@ import org.joda.time.Instant;
 @SuppressFBWarnings("URF_UNREAD_FIELD")
 public class MPJSONFile extends MPJSONAnyObject {
 
-    protected static final ObjectMapper objectMapper = new ObjectMapper();
-
-    static {
-        objectMapper.setDefaultPrettyPrinter( new DefaultPrettyPrinter() {
-            private static final long serialVersionUID = 1;
-
-            @Override
-            public DefaultPrettyPrinter withSeparators(final Separators separators) {
-                super.withSeparators( separators );
-                _objectFieldValueSeparatorWithSpaces = separators.getObjectFieldValueSeparator() + " ";
-                return this;
-            }
-        } );
-        objectMapper.setVisibility( PropertyAccessor.FIELD, JsonAutoDetect.Visibility.NON_PRIVATE );
-    }
-
     MPJSONFile() {
     }
 
@@ -70,16 +54,21 @@ public class MPJSONFile extends MPJSONAnyObject {
         export = new Export();
         export.format = 1;
         export.redacted = modelUser.getContentMode().isRedacted();
-        export.date = MPConstants.dateTimeFormatter.print( new Instant() );
+        export.date = MPModelConstants.dateTimeFormatter.print( new Instant() );
 
         // Section: "user"
         user = new User();
         user.avatar = modelUser.getAvatar();
         user.full_name = modelUser.getFullName();
-        user.last_used = MPConstants.dateTimeFormatter.print( modelUser.getLastUsed() );
+        user.last_used = MPModelConstants.dateTimeFormatter.print( modelUser.getLastUsed() );
         user.key_id = modelUser.exportKeyID();
         user.algorithm = modelUser.getAlgorithm().version();
-        user.default_type = modelUser.getDefaultType();
+        user._ext_mpw = new User.Ext() {
+            {
+                default_type = modelUser.getPreferences().getDefaultType();
+                hide_passwords = modelUser.getPreferences().isHidePasswords();
+            }
+        };
 
         // Section "sites"
         sites = new LinkedHashMap<>();
@@ -111,7 +100,7 @@ public class MPJSONFile extends MPJSONAnyObject {
             site.login_type = modelSite.getLoginType();
 
             site.uses = modelSite.getUses();
-            site.last_used = MPConstants.dateTimeFormatter.print( modelSite.getLastUsed() );
+            site.last_used = MPModelConstants.dateTimeFormatter.print( modelSite.getLastUsed() );
 
             site.questions = new LinkedHashMap<>();
             for (final MPFileQuestion question : modelSite.getQuestions())
@@ -130,8 +119,11 @@ public class MPJSONFile extends MPJSONAnyObject {
                     }
                 } );
 
-            site._ext_mpw = new Site.Ext();
+            site._ext_mpw = new Site.Ext() {
-            site._ext_mpw.url = modelSite.getUrl();
+                {
+                    url = modelSite.getUrl();
+                }
+            };
         }
     }
 
@@ -140,10 +132,11 @@ public class MPJSONFile extends MPJSONAnyObject {
 
         return new MPFileUser(
                 user.full_name, CodeUtils.decodeHex( user.key_id ), algorithm, user.avatar,
-                (user.default_type != null)? user.default_type: algorithm.mpw_default_result_type(),
+                (user._ext_mpw != null)? user._ext_mpw.default_type: null,
-                (user.last_used != null)? MPConstants.dateTimeFormatter.parseDateTime( user.last_used ): new Instant(),
+                (user.last_used != null)? MPModelConstants.dateTimeFormatter.parseDateTime( user.last_used ): new Instant(),
+                (user._ext_mpw != null) && user._ext_mpw.hide_passwords,
                 export.redacted? MPMarshaller.ContentMode.PROTECTED: MPMarshaller.ContentMode.VISIBLE,
-                MPMarshalFormat.JSON, file.getParentFile()
+                MPMarshalFormat.JSON, file
         );
     }
 
@@ -157,7 +150,7 @@ public class MPJSONFile extends MPJSONAnyObject {
                     fileSite.type, export.redacted? fileSite.password: null,
                     fileSite.login_type, export.redacted? fileSite.login_name: null,
                     (fileSite._ext_mpw != null)? fileSite._ext_mpw.url: null, fileSite.uses,
-                    (fileSite.last_used != null)? MPConstants.dateTimeFormatter.parseDateTime( fileSite.last_used ): new Instant() );
+                    (fileSite.last_used != null)? MPModelConstants.dateTimeFormatter.parseDateTime( fileSite.last_used ): new Instant() );
 
             if (!export.redacted) {
                 if (fileSite.password != null)
@@ -170,7 +163,7 @@ public class MPJSONFile extends MPJSONAnyObject {
             if (fileSite.questions != null)
                 for (final Map.Entry<String, Site.Question> questionEntry : fileSite.questions.entrySet()) {
                     Site.Question fileQuestion = questionEntry.getValue();
-                    MPFileQuestion question = new MPFileQuestion( site, questionEntry.getKey(),
+                    MPFileQuestion question = new MPFileQuestion( site, ifNotNullElse( questionEntry.getKey(), "" ),
                                                                   fileQuestion.type, export.redacted? fileQuestion.answer: null );
 
                     if (!export.redacted && (fileQuestion.answer != null))
@@ -209,8 +202,17 @@ public class MPJSONFile extends MPJSONAnyObject {
         String              key_id;
         @Nullable
         MPAlgorithm.Version algorithm;
+
+        @Nullable
+        Ext _ext_mpw;
+
+
+        public static class Ext extends MPJSONAnyObject {
+
             @Nullable
             MPResultType default_type;
+            boolean hide_passwords;
+        }
     }
 
 

platform-independent/java/model/src/main/java/com/lyndir/masterpassword/model/impl/MPMarshalFormat.java

@@ -18,6 +18,9 @@
 
 package com.lyndir.masterpassword.model.impl;
 
+import java.io.File;
+
+
 /**
  * @author lhunath, 2017-09-20
  *
@@ -72,4 +75,8 @@ public enum MPMarshalFormat {
 
     @SuppressWarnings("MethodReturnAlwaysConstant")
     public abstract String fileSuffix();
+
+    public boolean matches(final File file) {
+        return file.getName().endsWith( fileSuffix() );
+    }
 }