Remove MPW_COLOR from core, safer decryption, more standard password input & curses dialog.

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

@@ -28,18 +28,21 @@
 #include <errno.h>
 #include <sysexits.h>
 
+#define MPW_MAX_INPUT 60
+
+#if MPW_COLOR
+#include <curses.h>
+#include <term.h>
+#endif
+
 #include "mpw-util.h"
 
-/** Read the value of an environment variable.
-  * @return A newly allocated string or NULL if the variable doesn't exist. */
 const char *mpw_getenv(const char *variableName) {
 
     char *envBuf = getenv( variableName );
     return envBuf? mpw_strdup( envBuf ): NULL;
 }
 
-/** 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 *askpass = mpw_getenv( MP_ENV_askpass );
@@ -91,15 +94,59 @@ char *mpw_askpass(const char *prompt) {
     return NULL;
 }
 
-/** Ask the user a question.
-  * @return A newly allocated string or NULL if an error occurred trying to read from the user. */
-const char *mpw_getline(const char *prompt) {
+static const char *_mpw_getline(const char *prompt, bool silent) {
 
     // Get answer from askpass.
     char *answer = mpw_askpass( prompt );
     if (answer)
         return answer;
 
+#if MPW_COLOR
+    // Initialize a curses screen.
+    initscr();
+    start_color();
+    init_pair( 1, COLOR_WHITE, COLOR_BLUE );
+    init_pair( 2, COLOR_BLACK, COLOR_WHITE );
+    int rows, cols;
+    getmaxyx( stdscr, rows, cols );
+
+    // Display a dialog box.
+    int width = max( prompt? (int)strlen( prompt ): 0, MPW_MAX_INPUT ) + 6;
+    char *version = "mpw v" stringify_def( MP_VERSION );
+    mvprintw( rows - 1, (cols - (int)strlen( version )) / 2, "%s", version );
+    attron( A_BOLD );
+    color_set( 2, NULL );
+    mvprintw( rows / 2 - 1, (cols - width) / 2, "%s%*s%s", "*", width - 2, "", "*" );
+    mvprintw( rows / 2 - 1, (cols - (int)strlen( prompt )) / 2, "%s", prompt );
+    color_set( 1, NULL );
+    mvprintw( rows / 2 + 0, (cols - width) / 2, "%s%*s%s", "|", width - 2, "", "|" );
+    mvprintw( rows / 2 + 1, (cols - width) / 2, "%s%*s%s", "|", width - 2, "", "|" );
+    mvprintw( rows / 2 + 2, (cols - width) / 2, "%s%*s%s", "|", width - 2, "", "|" );
+
+    // Read response.
+    color_set( 2, NULL );
+    attron( A_STANDOUT );
+    int result = ERR;
+    char str[MPW_MAX_INPUT + 1];
+    if (silent) {
+        mvprintw( rows / 2 + 1, (cols - 5) / 2, "[ * ]" );
+        refresh();
+
+        noecho();
+        result = mvgetnstr( rows / 2 + 1, (cols - 1) / 2, str, MPW_MAX_INPUT );
+        echo();
+    } else {
+        mvprintw( rows / 2 + 1, (cols - (MPW_MAX_INPUT + 2)) / 2, "%*s", MPW_MAX_INPUT + 2, "" );
+        refresh();
+
+        echo();
+        result = mvgetnstr( rows / 2 + 1, (cols - MPW_MAX_INPUT) / 2, str, MPW_MAX_INPUT );
+    }
+    attrset( 0 );
+    endwin();
+
+    return result == ERR? NULL: mpw_strndup( str, MPW_MAX_INPUT );
+#else
     // Get password from terminal.
     fprintf( stderr, "%s ", prompt );
 
@@ -113,31 +160,19 @@ const char *mpw_getline(const char *prompt) {
     // Remove trailing newline.
     answer[lineSize - 1] = '\0';
     return answer;
+#endif
+}
+
+const char *mpw_getline(const char *prompt) {
+
+    return _mpw_getline( prompt, false );
 }
 
-/** Ask the user for a password.
-  * @return A newly allocated string or NULL if an error occurred trying to read from the user. */
 const char *mpw_getpass(const char *prompt) {
 
-    // Get password from askpass.
-    const char *password = mpw_askpass( prompt );
-    if (password)
-        return password;
-
-    // Get password from terminal.
-    char *answer = getpass( prompt );
-    if (!answer)
-        return NULL;
-
-    password = mpw_strdup( answer );
-    mpw_zero( answer, strlen( answer ) );
-    return password;
+    return _mpw_getline( prompt, true );
 }
 
-/** Get the absolute path to the mpw configuration file with the given prefix name and file extension.
-  * Resolves the file <prefix.extension> as located in the <.mpw.d> directory inside the user's home directory
-  * or current directory if it couldn't be resolved.
-  * @return A newly allocated string. */
 const char *mpw_path(const char *prefix, const char *extension) {
 
     // Resolve user's home directory.
@@ -180,8 +215,6 @@ const char *mpw_path(const char *prefix, const char *extension) {
     return path;
 }
 
-/** mkdir all the directories up to the directory of the given file path.
-  * @return true if the file's path exists. */
 bool mpw_mkdirs(const char *filePath) {
 
     if (!filePath)
@@ -215,8 +248,6 @@ bool mpw_mkdirs(const char *filePath) {
     return success;
 }
 
-/** Read until EOF from the given file descriptor.
-  * @return A newly allocated string or NULL if the read buffer couldn't be allocated or an error occurred. */
 char *mpw_read_fd(int fd) {
 
     char *buf = NULL;
@@ -230,8 +261,6 @@ char *mpw_read_fd(int fd) {
     return buf;
 }
 
-/** Read the file contents of a given file.
-  * @return A newly allocated string or NULL if the read buffer couldn't be allocated. */
 char *mpw_read_file(FILE *file) {
 
     if (!file)
@@ -245,3 +274,73 @@ char *mpw_read_file(FILE *file) {
 
     return buf;
 }
+
+#if MPW_COLOR
+static char *str_tputs;
+static int str_tputs_cursor;
+static const int str_tputs_max = 256;
+
+static bool mpw_setupterm() {
+
+    if (!isatty( STDERR_FILENO ))
+        return false;
+
+    static bool termsetup;
+    if (!termsetup) {
+        int errret;
+        if (!(termsetup = (setupterm( NULL, STDERR_FILENO, &errret ) == OK))) {
+            wrn( "Terminal doesn't support color (setupterm errret %d).\n", errret );
+            return false;
+        }
+    }
+
+    return true;
+}
+
+static int mpw_tputc(int c) {
+
+    if (++str_tputs_cursor < str_tputs_max) {
+        str_tputs[str_tputs_cursor] = (char)c;
+        return OK;
+    }
+
+    return ERR;
+}
+
+static char *mpw_tputs(const char *str, int affcnt) {
+
+    if (str_tputs)
+        mpw_free( &str_tputs, str_tputs_max );
+    str_tputs = calloc( str_tputs_max, sizeof( char ) );
+    str_tputs_cursor = -1;
+
+    char *result = tputs( str, affcnt, mpw_tputc ) == ERR? NULL: mpw_strndup( str_tputs, str_tputs_max );
+    if (str_tputs)
+        mpw_free( &str_tputs, str_tputs_max );
+
+    return result;
+}
+
+#endif
+
+const char *mpw_identicon_str(MPIdenticon identicon) {
+
+    char *colorString, *resetString;
+#ifdef MPW_COLOR
+    if (mpw_setupterm()) {
+        colorString = mpw_tputs( tparm( tgetstr( "AF", NULL ), identicon.color ), 1 );
+        resetString = mpw_tputs( tgetstr( "me", NULL ), 1 );
+    }
+    else
+#endif
+    {
+        colorString = calloc( 1, sizeof( char ) );
+        resetString = calloc( 1, sizeof( char ) );
+    }
+
+    const char *str = mpw_str( "%s%s%s%s%s%s",
+            colorString, identicon.leftArm, identicon.body, identicon.rightArm, identicon.accessory, resetString );
+    mpw_free_strings( &colorString, &resetString, NULL );
+
+    return mpw_strdup( str );
+}

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

@@ -19,6 +19,7 @@
 #include <stdio.h>
 #include <stdint.h>
 #include <stdbool.h>
+#include "mpw-types.h"
 
 #ifndef MP_VERSION
 #define MP_VERSION ?
@@ -62,3 +63,7 @@ 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);
+
+/** Encode a visual fingerprint for a user.
+  * @return A newly allocated string. */
+const char *mpw_identicon_str(MPIdenticon identicon);

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

@@ -564,7 +564,7 @@ void cli_question(Arguments __unused *args, Operation *operation) {
 
 void cli_operation(Arguments __unused *args, Operation *operation) {
 
-    operation->identicon = mpw_identicon( operation->user->fullName, operation->user->masterPassword );
+    operation->identicon = mpw_identicon_str( mpw_identicon( operation->user->fullName, operation->user->masterPassword ) );
 
     if (!operation->site)
         abort();