skylab/MasterPassword
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More flexible API for providing marshalling master key.

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This commit is contained in:
Maarten Billemont
2019-05-11 19:02:55 -04:00
parent 44a9ee0f15
commit 39eb0027b5
4 changed files with 79 additions and 52 deletions
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2
platform-independent/c/core/src/mpw-marshal-util.c
View File

@@ -106,7 +106,7 @@ bool mpw_get_json_boolean(
bool mpw_update_masterKey(MPMasterKey *masterKey, MPAlgorithmVersion *masterKeyAlgorithm, MPAlgorithmVersion targetKeyAlgorithm,
const char *fullName, const char *masterPassword) {
if (*masterKeyAlgorithm != targetKeyAlgorithm) {
if (masterKey && (!*masterKey || *masterKeyAlgorithm != targetKeyAlgorithm)) {
mpw_free( masterKey, MPMasterKeySize );
*masterKeyAlgorithm = targetKeyAlgorithm;
*masterKey = mpw_masterKey( fullName, masterPassword, *masterKeyAlgorithm );

63
platform-independent/c/core/src/mpw-marshal.c
View File

@@ -26,15 +26,15 @@
#include "mpw-marshal-util.h"
MPMarshalledUser *mpw_marshal_user(
const char *fullName, const char *masterPassword, const MPAlgorithmVersion algorithmVersion) {
const char *fullName, MPMasterKeyProvider masterKeyProvider, const MPAlgorithmVersion algorithmVersion) {
MPMarshalledUser *user;
if (!fullName || !masterPassword || !(user = malloc( sizeof( MPMarshalledUser ) )))
if (!fullName || !masterKeyProvider || !(user = malloc( sizeof( MPMarshalledUser ) )))
return NULL;
*user = (MPMarshalledUser){
.fullName = mpw_strdup( fullName ),
.masterPassword = mpw_strdup( masterPassword ),
.masterKeyProvider = masterKeyProvider,
.algorithm = algorithmVersion,
.redacted = true,
@@ -113,7 +113,7 @@ bool mpw_marshal_free(
return true;
bool success = true;
success &= mpw_free_strings( &(*user)->fullName, &(*user)->masterPassword, NULL );
success &= mpw_free_strings( &(*user)->fullName, NULL );
for (size_t s = 0; s < (*user)->sites_count; ++s) {
MPMarshalledSite *site = &(*user)->sites[s];
@@ -140,13 +140,8 @@ static bool mpw_marshal_write_flat(
*error = (MPMarshalError){ MPMarshalErrorMissing, "Missing full name." };
return false;
}
if (!user->masterPassword || !strlen( user->masterPassword )) {
*error = (MPMarshalError){ MPMarshalErrorMasterPassword, "Missing master password." };
return false;
}
MPMasterKey masterKey = NULL;
MPAlgorithmVersion masterKeyAlgorithm = user->algorithm - 1;
if (!mpw_update_masterKey( &masterKey, &masterKeyAlgorithm, user->algorithm, user->fullName, user->masterPassword )) {
MPMasterKey masterKey = user->masterKeyProvider( user->algorithm, user->fullName );
if (!masterKey) {
*error = (MPMarshalError){ MPMarshalErrorInternal, "Couldn't derive master key." };
return false;
}
@@ -185,7 +180,8 @@ static bool mpw_marshal_write_flat(
const char *content = NULL, *loginContent = NULL;
if (!user->redacted) {
// Clear Text
if (!mpw_update_masterKey( &masterKey, &masterKeyAlgorithm, site->algorithm, user->fullName, user->masterPassword )) {
mpw_free( &masterKey, MPMasterKeySize );
if (!(masterKey = user->masterKeyProvider( user->algorithm, user->fullName ))) {
*error = (MPMarshalError){ MPMarshalErrorInternal, "Couldn't derive master key." };
return false;
}
@@ -224,13 +220,8 @@ static bool mpw_marshal_write_json(
*error = (MPMarshalError){ MPMarshalErrorMissing, "Missing full name." };
return false;
}
if (!user->masterPassword || !strlen( user->masterPassword )) {
*error = (MPMarshalError){ MPMarshalErrorMasterPassword, "Missing master password." };
return false;
}
MPMasterKey masterKey = NULL;
MPAlgorithmVersion masterKeyAlgorithm = user->algorithm - 1;
if (!mpw_update_masterKey( &masterKey, &masterKeyAlgorithm, user->algorithm, user->fullName, user->masterPassword )) {
MPMasterKey masterKey = user->masterKeyProvider( user->algorithm, user->fullName );
if (!masterKey) {
*error = (MPMarshalError){ MPMarshalErrorInternal, "Couldn't derive master key." };
return false;
}
@@ -271,7 +262,8 @@ static bool mpw_marshal_write_json(
const char *content = NULL, *loginContent = NULL;
if (!user->redacted) {
// Clear Text
if (!mpw_update_masterKey( &masterKey, &masterKeyAlgorithm, site->algorithm, user->fullName, user->masterPassword )) {
mpw_free( &masterKey, MPMasterKeySize );
if (!(masterKey = user->masterKeyProvider( user->algorithm, user->fullName ))) {
*error = (MPMarshalError){ MPMarshalErrorInternal, "Couldn't derive master key." };
return false;
}
@@ -341,8 +333,8 @@ static bool mpw_marshal_write_json(
mpw_string_pushf( out, "%s\n", json_object_to_json_string_ext( json_file,
JSON_C_TO_STRING_PRETTY | JSON_C_TO_STRING_SPACED | JSON_C_TO_STRING_NOSLASHESCAPE ) );
mpw_free( &masterKey, MPMasterKeySize );
json_object_put( json_file );
mpw_free( &masterKey, MPMasterKeySize );
*error = (MPMarshalError){ .type = MPMarshalSuccess };
return true;
@@ -416,7 +408,7 @@ static void mpw_marshal_read_flat_info(
}
static MPMarshalledUser *mpw_marshal_read_flat(
const char *in, const char *masterPassword, MPMarshalError *error) {
const char *in, MPMasterKeyProvider masterKeyProvider, MPMarshalError *error) {
*error = (MPMarshalError){ MPMarshalErrorInternal, "Unexpected internal error." };
if (!in || !strlen( in )) {
@@ -430,7 +422,7 @@ static MPMarshalledUser *mpw_marshal_read_flat(
MPMarshalledUser *user = NULL;
unsigned int format = 0, avatar = 0;
char *fullName = NULL, *keyID = NULL;
MPAlgorithmVersion algorithm = MPAlgorithmVersionCurrent, masterKeyAlgorithm = (MPAlgorithmVersion)-1;
MPAlgorithmVersion algorithm = MPAlgorithmVersionCurrent;
MPResultType defaultType = MPResultTypeDefault;
bool headerStarted = false, headerEnded = false, importRedacted = false;
for (const char *endOfLine, *positionInLine = in; (endOfLine = strstr( positionInLine, "\n" )); positionInLine = endOfLine + 1) {
@@ -504,7 +496,8 @@ static MPMarshalledUser *mpw_marshal_read_flat(
continue;
if (!user) {
if (!mpw_update_masterKey( &masterKey, &masterKeyAlgorithm, algorithm, fullName, masterPassword )) {
mpw_free( &masterKey, MPMasterKeySize );
if (!(masterKey = masterKeyProvider( algorithm, fullName ))) {
*error = (MPMarshalError){ MPMarshalErrorInternal, "Couldn't derive master key." };
return NULL;
}
@@ -512,7 +505,7 @@ static MPMarshalledUser *mpw_marshal_read_flat(
*error = (MPMarshalError){ MPMarshalErrorMasterPassword, "Master password doesn't match key ID." };
return NULL;
}
if (!(user = mpw_marshal_user( fullName, masterPassword, algorithm ))) {
if (!(user = mpw_marshal_user( fullName, masterKeyProvider, algorithm ))) {
*error = (MPMarshalError){ MPMarshalErrorInternal, "Couldn't allocate a new user." };
return NULL;
}
@@ -597,7 +590,8 @@ static MPMarshalledUser *mpw_marshal_read_flat(
site->lastUsed = siteLastUsed;
if (!user->redacted) {
// Clear Text
if (!mpw_update_masterKey( &masterKey, &masterKeyAlgorithm, site->algorithm, fullName, masterPassword )) {
mpw_free( &masterKey, MPMasterKeySize );
if (!(masterKey = masterKeyProvider( user->algorithm, user->fullName ))) {
*error = (MPMarshalError){ MPMarshalErrorInternal, "Couldn't derive master key." };
return NULL;
}
@@ -661,7 +655,7 @@ static void mpw_marshal_read_json_info(
}
static MPMarshalledUser *mpw_marshal_read_json(
const char *in, const char *masterPassword, MPMarshalError *error) {
const char *in, MPMasterKeyProvider masterKeyProvider, MPMarshalError *error) {
*error = (MPMarshalError){ MPMarshalErrorInternal, "Unexpected internal error." };
if (!in || !strlen( in )) {
@@ -680,7 +674,6 @@ static MPMarshalledUser *mpw_marshal_read_json(
// Parse import data.
MPMasterKey masterKey = NULL;
MPAlgorithmVersion masterKeyAlgorithm = (MPAlgorithmVersion)-1;
MPMarshalledUser *user = NULL;
// Section: "export"
@@ -716,7 +709,7 @@ static MPMarshalledUser *mpw_marshal_read_json(
*error = (MPMarshalError){ MPMarshalErrorMissing, "Missing value for full name." };
return NULL;
}
if (!mpw_update_masterKey( &masterKey, &masterKeyAlgorithm, algorithm, fullName, masterPassword )) {
if (!(masterKey = masterKeyProvider( user->algorithm, user->fullName ))) {
*error = (MPMarshalError){ MPMarshalErrorInternal, "Couldn't derive master key." };
return NULL;
}
@@ -724,7 +717,7 @@ static MPMarshalledUser *mpw_marshal_read_json(
*error = (MPMarshalError){ MPMarshalErrorMasterPassword, "Master password doesn't match key ID." };
return NULL;
}
if (!(user = mpw_marshal_user( fullName, masterPassword, algorithm ))) {
if (!(user = mpw_marshal_user( fullName, masterKeyProvider, algorithm ))) {
*error = (MPMarshalError){ MPMarshalErrorInternal, "Couldn't allocate a new user." };
return NULL;
}
@@ -781,7 +774,8 @@ static MPMarshalledUser *mpw_marshal_read_json(
site->lastUsed = siteLastUsed;
if (!user->redacted) {
// Clear Text
if (!mpw_update_masterKey( &masterKey, &masterKeyAlgorithm, site->algorithm, fullName, masterPassword )) {
mpw_free( &masterKey, MPMasterKeySize );
if (!(masterKey = masterKeyProvider( user->algorithm, user->fullName ))) {
*error = (MPMarshalError){ MPMarshalErrorInternal, "Couldn't derive master key." };
return NULL;
}
@@ -824,6 +818,7 @@ static MPMarshalledUser *mpw_marshal_read_json(
}
}
json_object_put( json_file );
mpw_free( &masterKey, MPMasterKeySize );
*error = (MPMarshalError){ .type = MPMarshalSuccess };
return user;
@@ -853,17 +848,17 @@ MPMarshalInfo *mpw_marshal_read_info(
}
MPMarshalledUser *mpw_marshal_read(
const char *in, const MPMarshalFormat inFormat, const char *masterPassword, MPMarshalError *error) {
const char *in, const MPMarshalFormat inFormat, MPMasterKeyProvider masterKeyProvider, MPMarshalError *error) {
switch (inFormat) {
case MPMarshalFormatNone:
*error = (MPMarshalError){ .type = MPMarshalSuccess };
return false;
case MPMarshalFormatFlat:
return mpw_marshal_read_flat( in, masterPassword, error );
return mpw_marshal_read_flat( in, masterKeyProvider, error );
#if MPW_JSON
case MPMarshalFormatJSON:
return mpw_marshal_read_json( in, masterPassword, error );
return mpw_marshal_read_json( in, masterKeyProvider, error );
#endif
default:
*error = (MPMarshalError){ MPMarshalErrorFormat, mpw_str( "Unsupported input format: %u", inFormat ) };

9
platform-independent/c/core/src/mpw-marshal.h
View File

@@ -56,6 +56,9 @@ typedef mpw_enum( unsigned int, MPMarshalErrorType ) {
/** An internal system error interrupted marshalling. */
MPMarshalErrorInternal,
};
typedef MPMasterKey (*MPMasterKeyProvider)(MPAlgorithmVersion algorithm, const char *fullName);
typedef struct MPMarshalError {
MPMarshalErrorType type;
const char *description;
@@ -87,7 +90,7 @@ typedef struct MPMarshalledSite {
typedef struct MPMarshalledUser {
const char *fullName;
const char *masterPassword;
MPMasterKeyProvider masterKeyProvider;
MPAlgorithmVersion algorithm;
bool redacted;
@@ -118,13 +121,13 @@ MPMarshalInfo *mpw_marshal_read_info(
const char *in);
/** Unmarshall sites in the given input buffer by parsing it using the given marshalling format. */
MPMarshalledUser *mpw_marshal_read(
const char *in, const MPMarshalFormat inFormat, const char *masterPassword, MPMarshalError *error);
const char *in, const MPMarshalFormat inFormat, MPMasterKeyProvider masterKeyProvider, MPMarshalError *error);
//// Utilities.
/** Create a new user object ready for marshalling. */
MPMarshalledUser *mpw_marshal_user(
const char *fullName, const char *masterPassword, const MPAlgorithmVersion algorithmVersion);
const char *fullName, MPMasterKeyProvider masterKeyProvider, const MPAlgorithmVersion algorithmVersion);
/** Create a new site attached to the given user object, ready for marshalling. */
MPMarshalledSite *mpw_marshal_site(
MPMarshalledUser *user,