skylab/MasterPassword
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Refactor a bit.

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This commit is contained in:
Maarten Billemont 2017-07-22 23:58:22 -04:00
parent 4103c6e659
commit 6d88d6bde0
1 changed files with 54 additions and 68 deletions
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122
core/c/mpw-marshall.c
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@ -24,6 +24,37 @@
#include "mpw-marshall.h"
#include "mpw-util.h"
static char *mpw_get_token(char **in, char *eol, char *delim) {
// Skip leading spaces.
for (; **in == ' '; ++*in);
// Find characters up to the first delim.
size_t len = strcspn( *in, delim );
char *token = len? strndup( *in, len ): NULL;
// Advance past the delimitor.
*in = min( eol, *in + len + 1 );
return token;
}
static bool mpw_update_masterKey(MPMasterKey *masterKey, MPAlgorithmVersion *masterKeyAlgorithm, MPAlgorithmVersion targetKeyAlgorithm,
const char *fullName, const char *masterPassword) {
if (*masterKeyAlgorithm != targetKeyAlgorithm) {
mpw_free( *masterKey, MPMasterKeySize );
*masterKeyAlgorithm = targetKeyAlgorithm;
*masterKey = mpw_masterKeyForUser(
fullName, masterPassword, *masterKeyAlgorithm );
if (!*masterKey) {
err( "Couldn't derive master key for user %s, algorithm %d.\n", fullName, *masterKeyAlgorithm );
return false;
}
}
return true;
}
MPMarshalledUser *mpw_marshall_user(
const char *fullName, const char *masterPassword, const MPAlgorithmVersion algorithmVersion) {
@ -114,13 +145,11 @@ bool mpw_marshal_free(
bool mpw_marshall_write_flat(
char **out, const MPMarshalledUser *marshalledUser) {
MPAlgorithmVersion masterKeyAlgorithm = marshalledUser->algorithm;
MPMasterKey masterKey = mpw_masterKeyForUser(
marshalledUser->name, marshalledUser->masterPassword, masterKeyAlgorithm );
if (!masterKey) {
err( "Couldn't derive master key for user %s, algorithm %d.\n", marshalledUser->name, masterKeyAlgorithm );
MPMasterKey masterKey = NULL;
MPAlgorithmVersion masterKeyAlgorithm = marshalledUser->algorithm - 1;
if (!mpw_update_masterKey( &masterKey, &masterKeyAlgorithm,
marshalledUser->algorithm, marshalledUser->name, marshalledUser->masterPassword ))
return false;
}
try_asprintf( out, "# Master Password site export\n" );
if (marshalledUser->redacted)
@ -154,16 +183,9 @@ bool mpw_marshall_write_flat(
const char *content = site.type & MPSiteFeatureExportContent? site.content: NULL;
if (!marshalledUser->redacted) {
if (masterKeyAlgorithm != site.algorithm) {
mpw_free( masterKey, MPMasterKeySize );
masterKeyAlgorithm = site.algorithm;
masterKey = mpw_masterKeyForUser(
marshalledUser->name, marshalledUser->masterPassword, masterKeyAlgorithm );
if (!masterKey) {
err( "Couldn't derive master key for user %s, algorithm %d.\n", marshalledUser->name, masterKeyAlgorithm );
return false;
}
}
if (!mpw_update_masterKey( &masterKey, &masterKeyAlgorithm,
site.algorithm, marshalledUser->name, marshalledUser->masterPassword ))
return false;
if (site.type & MPSiteTypeClassGenerated)
content = mpw_passwordForSite( masterKey, site.name, site.type, site.counter,
@ -187,13 +209,11 @@ bool mpw_marshall_write_flat(
bool mpw_marshall_write_json(
char **out, const MPMarshalledUser *marshalledUser) {
MPAlgorithmVersion masterKeyAlgorithm = marshalledUser->algorithm;
MPMasterKey masterKey = mpw_masterKeyForUser(
marshalledUser->name, marshalledUser->masterPassword, masterKeyAlgorithm );
if (!masterKey) {
err( "Couldn't derive master key for user %s, algorithm %d.\n", marshalledUser->name, masterKeyAlgorithm );
MPMasterKey masterKey = NULL;
MPAlgorithmVersion masterKeyAlgorithm = marshalledUser->algorithm - 1;
if (!mpw_update_masterKey( &masterKey, &masterKeyAlgorithm,
marshalledUser->algorithm, marshalledUser->name, marshalledUser->masterPassword ))
return false;
}
json_object *json_out = json_object_new_object();
@ -232,16 +252,9 @@ bool mpw_marshall_write_json(
const char *content = site.type & MPSiteFeatureExportContent? site.content: NULL;
if (!marshalledUser->redacted) {
if (masterKeyAlgorithm != site.algorithm) {
mpw_free( masterKey, MPMasterKeySize );
masterKeyAlgorithm = site.algorithm;
masterKey = mpw_masterKeyForUser(
marshalledUser->name, marshalledUser->masterPassword, masterKeyAlgorithm );
if (!masterKey) {
err( "Couldn't derive master key for user %s, algorithm %d.\n", marshalledUser->name, masterKeyAlgorithm );
return false;
}
}
if (!mpw_update_masterKey( &masterKey, &masterKeyAlgorithm,
site.algorithm, marshalledUser->name, marshalledUser->masterPassword ))
return false;
if (site.type & MPSiteTypeClassGenerated)
content = mpw_passwordForSite( masterKey, site.name, site.type, site.counter,
@ -311,20 +324,6 @@ bool mpw_marshall_write(
return false;
}
char *mpw_get_token(char **in, char *eol, char *delim) {
// Skip leading spaces.
for (; **in == ' '; ++*in);
// Find characters up to the first delim.
size_t len = strcspn( *in, delim );
char *token = len? strndup( *in, len ): NULL;
// Advance past the delimitor.
*in = min( eol, *in + len + 1 );
return token;
}
MPMarshalledUser *mpw_marshall_read_flat(
char *in, const char *masterPassword) {
@ -333,7 +332,7 @@ MPMarshalledUser *mpw_marshall_read_flat(
MPMarshalledUser *user = NULL;
unsigned int importFormat = 0, importAvatar = 0;
char *importUserName = NULL, *importKeyID = NULL, *importDate = NULL;
MPAlgorithmVersion importAlgorithm = MPAlgorithmVersionCurrent, masterKeyAlgorithm = importAlgorithm;
MPAlgorithmVersion importAlgorithm = MPAlgorithmVersionCurrent, masterKeyAlgorithm = (MPAlgorithmVersion)-1;
MPSiteType importDefaultType = (MPSiteType)0;
bool headerStarted = false, headerEnded = false, importRedacted = false;
for (char *endOfLine, *positionInLine = in; (endOfLine = strstr( positionInLine, "\n" )); positionInLine = endOfLine + 1) {
@ -403,14 +402,9 @@ MPMarshalledUser *mpw_marshall_read_flat(
continue;
if (!user) {
mpw_free( masterKey, MPMasterKeySize );
masterKeyAlgorithm = importAlgorithm;
masterKey = mpw_masterKeyForUser(
importUserName, masterPassword, masterKeyAlgorithm );
if (!masterKey) {
err( "Couldn't derive master key for user %s, algorithm %d.\n", importUserName, masterKeyAlgorithm );
if (!mpw_update_masterKey( &masterKey, &masterKeyAlgorithm,
importAlgorithm, importUserName, masterPassword ))
return false;
}
if (importKeyID && strcmp( importKeyID, mpw_id_buf( masterKey, MPMasterKeySize ) ) != 0) {
err( "Incorrect master password for user import file.\n" );
return false;
@ -425,7 +419,6 @@ MPMarshalledUser *mpw_marshall_read_flat(
user->defaultType = importDefaultType;
}
// Site
char *lastUsed = NULL, *uses = NULL, *type = NULL, *version = NULL, *counter = NULL;
char *loginName = NULL, *siteName = NULL, *exportContent = NULL;
@ -471,20 +464,14 @@ MPMarshalledUser *mpw_marshall_read_flat(
(MPSiteType)atoi( type ), (uint32_t)atoi( counter ), (MPAlgorithmVersion)atoi( version ) );
if (exportContent) {
if (user->redacted) {
if (masterKeyAlgorithm != site->algorithm) {
mpw_free( masterKey, MPMasterKeySize );
masterKeyAlgorithm = site->algorithm;
masterKey = mpw_masterKeyForUser(
user->name, user->masterPassword, masterKeyAlgorithm );
if (!masterKey) {
err( "Couldn't derive master key for user %s, algorithm %d.\n", user->name, masterKeyAlgorithm );
return false;
}
}
if (!mpw_update_masterKey( &masterKey, &masterKeyAlgorithm,
site->algorithm, importUserName, masterPassword ))
return false;
// TODO: Encrypt Personal Passwords
//site->content = aes128_cbc( masterKey, exportContent );
} else
}
else
site->content = exportContent;
}
@ -511,11 +498,10 @@ MPMarshalledUser *mpw_marshall_read_flat(
mpw_free_string( siteName );
mpw_free_string( exportContent );
}
mpw_free( masterKey, MPMasterKeySize );
mpw_free_string( importUserName );
mpw_free_string( importKeyID );
mpw_free_string( importDate );
mpw_free( masterKey, MPMasterKeySize );
return user;
}