skylab/MasterPassword
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NULL out free'ed references.

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This commit is contained in:
Maarten Billemont 2017-08-23 00:01:23 -04:00
parent 0a42579d9e
commit a8949ca07e
12 changed files with 171 additions and 172 deletions
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35
core/c/mpw-algorithm_v0.c
View File

@ -18,7 +18,6 @@
#include <string.h>
#include <errno.h>
#include <arpa/inet.h>
#include "mpw-types.h"
#include "mpw-util.h"
@ -71,7 +70,7 @@ static MPMasterKey mpw_masterKey_v0(
// Calculate the master key.
trc( "masterKey: scrypt( masterPassword, masterKeySalt, N=%lu, r=%u, p=%u )\n", MP_N, MP_r, MP_p );
MPMasterKey masterKey = mpw_kdf_scrypt( MPMasterKeySize, masterPassword, masterKeySalt, masterKeySaltSize, MP_N, MP_r, MP_p );
mpw_free( masterKeySalt, masterKeySaltSize );
mpw_free( &masterKeySalt, masterKeySaltSize );
if (!masterKey) {
err( "Could not allocate master key: %s\n", strerror( errno ) );
return NULL;
@ -104,9 +103,8 @@ static MPSiteKey mpw_siteKey_v0(
mpw_push_int( &siteSalt, &siteSaltSize, htonl( mpw_utf8_strlen( keyContext ) ) );
mpw_push_string( &siteSalt, &siteSaltSize, keyContext );
}
if (!siteSalt || !siteSaltSize) {
if (!siteSalt) {
err( "Could not allocate site salt: %s\n", strerror( errno ) );
mpw_free( siteSalt, siteSaltSize );
return NULL;
}
trc( " => siteSalt.id: %s\n", mpw_id_buf( siteSalt, siteSaltSize ) );
@ -114,7 +112,7 @@ static MPSiteKey mpw_siteKey_v0(
trc( "siteKey: hmac-sha256( masterKey.id=%s, siteSalt )\n",
mpw_id_buf( masterKey, MPMasterKeySize ) );
MPSiteKey siteKey = mpw_hash_hmac_sha256( masterKey, MPMasterKeySize, siteSalt, siteSaltSize );
mpw_free( siteSalt, siteSaltSize );
mpw_free( &siteSalt, siteSaltSize );
if (!siteKey) {
err( "Could not derive site key: %s\n", strerror( errno ) );
return NULL;
@ -163,19 +161,19 @@ static const char *mpw_sitePasswordFromCrypt_v0(
size_t bufSize = (size_t)mpw_base64_decode( cipherBuf, cipherText );
if ((int)bufSize < 0) {
err( "Base64 decoding error." );
mpw_free( cipherBuf, mpw_base64_decode_max( cipherText ) );
mpw_free( &cipherBuf, mpw_base64_decode_max( cipherText ) );
return NULL;
}
trc( "b64 decoded: %zu bytes = %s\n", bufSize, mpw_hex( cipherBuf, bufSize ) );
// Decrypt
const uint8_t *plainBytes = mpw_aes_decrypt( masterKey, MPMasterKeySize, cipherBuf, bufSize );
mpw_free( &cipherBuf, bufSize );
const char *plainText = strndup( (char *)plainBytes, bufSize );
mpw_free( plainBytes, bufSize );
mpw_free( &plainBytes, bufSize );
if (!plainText)
err( "AES decryption error: %s\n", strerror( errno ) );
trc( "decrypted -> plainText: %s = %s\n", plainText, mpw_hex( plainText, sizeof( plainText ) ) );
mpw_free( cipherBuf, bufSize );
return plainText;
}
@ -206,15 +204,16 @@ static const char *mpw_sitePasswordFromDerive_v0(
// Base64-encode
size_t b64Max = mpw_base64_encode_max( keySize );
char *sitePassword = calloc( 1, b64Max + 1 );
if (mpw_base64_encode( sitePassword, resultKey, keySize ) < 0) {
char *b64Key = calloc( 1, b64Max + 1 );
if (mpw_base64_encode( b64Key, resultKey, keySize ) < 0) {
err( "Base64 encoding error." );
mpw_free_string( sitePassword );
sitePassword = NULL;
mpw_free_string( &b64Key );
}
trc( "b64 encoded -> key.id: %s\n", mpw_id_buf( sitePassword, strlen( sitePassword ) ) );
else
trc( "b64 encoded -> key.id: %s\n", mpw_id_buf( b64Key, strlen( b64Key ) ) );
mpw_free( &resultKey, keySize );
return sitePassword;
return b64Key;
}
default:
err( "Unsupported derived password type: %d\n", resultType );
@ -239,11 +238,11 @@ static const char *mpw_siteState_v0(
char *cipherText = calloc( 1, b64Max + 1 );
if (mpw_base64_encode( cipherText, cipherBuf, bufSize ) < 0) {
err( "Base64 encoding error." );
mpw_free_string( cipherText );
cipherText = NULL;
mpw_free_string( &cipherText );
}
trc( "b64 encoded -> cipherText: %s = %s\n", cipherText, mpw_hex( cipherText, sizeof( cipherText ) ) );
mpw_free( cipherBuf, bufSize );
else
trc( "b64 encoded -> cipherText: %s = %s\n", cipherText, mpw_hex( cipherText, sizeof( cipherText ) ) );
mpw_free( &cipherBuf, bufSize );
return cipherText;
}

5
core/c/mpw-algorithm_v2.c
View File

@ -69,9 +69,8 @@ static MPSiteKey mpw_siteKey_v2(
mpw_push_int( &siteSalt, &siteSaltSize, htonl( strlen( keyContext ) ) );
mpw_push_string( &siteSalt, &siteSaltSize, keyContext );
}
if (!siteSalt || !siteSaltSize) {
if (!siteSalt) {
err( "Could not allocate site salt: %s\n", strerror( errno ) );
mpw_free( siteSalt, siteSaltSize );
return NULL;
}
trc( " => siteSalt.id: %s\n", mpw_id_buf( siteSalt, siteSaltSize ) );
@ -79,7 +78,7 @@ static MPSiteKey mpw_siteKey_v2(
trc( "siteKey: hmac-sha256( masterKey.id=%s, siteSalt )\n",
mpw_id_buf( masterKey, MPMasterKeySize ) );
MPSiteKey siteKey = mpw_hash_hmac_sha256( masterKey, MPMasterKeySize, siteSalt, siteSaltSize );
mpw_free( siteSalt, siteSaltSize );
mpw_free( &siteSalt, siteSaltSize );
if (!siteKey) {
err( "Could not allocate site key: %s\n", strerror( errno ) );
return NULL;

2
core/c/mpw-algorithm_v3.c
View File

@ -64,7 +64,7 @@ static MPMasterKey mpw_masterKey_v3(
// Calculate the master key.
trc( "masterKey: scrypt( masterPassword, masterKeySalt, N=%lu, r=%u, p=%u )\n", MP_N, MP_r, MP_p );
MPMasterKey masterKey = mpw_kdf_scrypt( MPMasterKeySize, masterPassword, masterKeySalt, masterKeySaltSize, MP_N, MP_r, MP_p );
mpw_free( masterKeySalt, masterKeySaltSize );
mpw_free( &masterKeySalt, masterKeySaltSize );
if (!masterKey) {
err( "Could not allocate master key: %s\n", strerror( errno ) );
return NULL;

5
core/c/mpw-marshall-util.c
View File

@ -100,10 +100,9 @@ bool mpw_update_masterKey(MPMasterKey *masterKey, MPAlgorithmVersion *masterKeyA
const char *fullName, const char *masterPassword) {
if (*masterKeyAlgorithm != targetKeyAlgorithm) {
mpw_free( *masterKey, MPMasterKeySize );
mpw_free( masterKey, MPMasterKeySize );
*masterKeyAlgorithm = targetKeyAlgorithm;
*masterKey = mpw_masterKey(
fullName, masterPassword, *masterKeyAlgorithm );
*masterKey = mpw_masterKey( fullName, masterPassword, *masterKeyAlgorithm );
if (!*masterKey) {
err( "Couldn't derive master key for user %s, algorithm %d.\n", fullName, *masterKeyAlgorithm );
return false;

69
core/c/mpw-marshall.c
View File

@ -94,42 +94,39 @@ MPMarshalledQuestion *mpw_marshal_question(
}
bool mpw_marshal_info_free(
MPMarshallInfo *info) {
MPMarshallInfo **info) {
if (!info)
if (!info || !*info)
return true;
bool success = true;
success &= mpw_free_string( info->fullName );
success &= mpw_free_string( info->keyID );
success &= mpw_free_strings( &(*info)->fullName, &(*info)->keyID, NULL );
success &= mpw_free( info, sizeof( MPMarshallInfo ) );
return success;
}
bool mpw_marshal_free(
MPMarshalledUser *user) {
MPMarshalledUser **user) {
if (!user)
return true;
bool success = true;
for (size_t s = 0; s < user->sites_count; ++s) {
MPMarshalledSite *site = &user->sites[s];
success &= mpw_free_string( site->name );
success &= mpw_free_string( site->content );
success &= mpw_free_string( site->loginContent );
success &= mpw_free_string( site->url );
success &= mpw_free_strings( &(*user)->fullName, &(*user)->masterPassword, NULL );
for (size_t s = 0; s < (*user)->sites_count; ++s) {
MPMarshalledSite *site = &(*user)->sites[s];
success &= mpw_free_strings( &site->name, &site->content, &site->loginContent, &site->url, NULL );
for (size_t q = 0; q < site->questions_count; ++q) {
MPMarshalledQuestion *question = &site->questions[q];
success &= mpw_free_string( question->keyword );
success &= mpw_free_string( question->content );
success &= mpw_free_strings( &question->keyword, &question->content, NULL );
}
success &= mpw_free( site->questions, sizeof( MPMarshalledQuestion ) * site->questions_count );
success &= mpw_free( &site->questions, sizeof( MPMarshalledQuestion ) * site->questions_count );
}
success &= mpw_free( user->sites, sizeof( MPMarshalledSite ) * user->sites_count );
success &= mpw_free_string( user->fullName );
success &= mpw_free_string( user->masterPassword );
success &= mpw_free( &(*user)->sites, sizeof( MPMarshalledSite ) * (*user)->sites_count );
success &= mpw_free( user, sizeof( MPMarshalledUser ) );
return success;
@ -210,10 +207,9 @@ static bool mpw_marshall_write_flat(
mpw_string_pushf( out, "%s %8ld %lu:%lu:%lu %25s\t%25s\t%s\n",
dateString, (long)site->uses, (long)site->type, (long)site->algorithm, (long)site->counter,
loginContent?: "", site->name, content?: "" );
mpw_free_string( content );
mpw_free_string( loginContent );
mpw_free_strings( &content, &loginContent, NULL );
}
mpw_free( masterKey, MPMasterKeySize );
mpw_free( &masterKey, MPMasterKeySize );
*error = (MPMarshallError){ .type = MPMarshallSuccess };
return true;
@ -336,11 +332,11 @@ static bool mpw_marshall_write_json(
if (site->url)
json_object_object_add( json_site_mpw, "url", json_object_new_string( site->url ) );
mpw_free_string( content );
mpw_free_strings( &content, &loginContent );
}
mpw_string_pushf( out, "%s\n", json_object_to_json_string_ext( json_file, JSON_C_TO_STRING_PRETTY | JSON_C_TO_STRING_SPACED ) );
mpw_free( masterKey, MPMasterKeySize );
mpw_free( &masterKey, MPMasterKeySize );
json_object_put( json_file );
*error = (MPMarshallError){ .type = MPMarshallSuccess };
@ -405,8 +401,7 @@ static void mpw_marshall_read_flat_info(
if (strcmp( headerName, "Date" ) == 0)
info->date = mpw_mktime( headerValue );
mpw_free_string( headerName );
mpw_free_string( headerValue );
mpw_free_strings( &headerName, &headerValue, NULL );
continue;
}
}
@ -488,8 +483,7 @@ static MPMarshalledUser *mpw_marshall_read_flat(
if (strcmp( headerName, "Passwords" ) == 0)
importRedacted = strcmp( headerValue, "VISIBLE" ) != 0;
mpw_free_string( headerName );
mpw_free_string( headerValue );
mpw_free_strings( &headerName, &headerValue, NULL );
continue;
}
if (!headerEnded)
@ -531,7 +525,7 @@ static MPMarshalledUser *mpw_marshall_read_flat(
if (typeAndVersion) {
str_type = strdup( strtok( typeAndVersion, ":" ) );
str_algorithm = strdup( strtok( NULL, "" ) );
mpw_free_string( typeAndVersion );
mpw_free_string( &typeAndVersion );
}
str_counter = strdup( "1" );
siteLoginName = NULL;
@ -547,7 +541,7 @@ static MPMarshalledUser *mpw_marshall_read_flat(
str_type = strdup( strtok( typeAndVersionAndCounter, ":" ) );
str_algorithm = strdup( strtok( NULL, ":" ) );
str_counter = strdup( strtok( NULL, "" ) );
mpw_free_string( typeAndVersionAndCounter );
mpw_free_string( &typeAndVersionAndCounter );
}
siteLoginName = mpw_get_token( &positionInLine, endOfLine, "\t\n" );
siteName = mpw_get_token( &positionInLine, endOfLine, "\t\n" );
@ -606,6 +600,7 @@ static MPMarshalledUser *mpw_marshall_read_flat(
if (siteLoginName && strlen( siteLoginName ))
site->loginContent = mpw_siteState( masterKey, site->name, MPCounterValueInitial,
MPKeyPurposeIdentification, NULL, site->loginType, siteLoginName, site->algorithm );
dbg( "site->content: %p\n", (void *)site->content );
}
else {
// Redacted
@ -613,6 +608,7 @@ static MPMarshalledUser *mpw_marshall_read_flat(
site->content = strdup( siteContent );
if (siteLoginName && strlen( siteLoginName ))
site->loginContent = strdup( siteLoginName );
dbg( "site->content: %p\n", (void *)site->content );
}
}
else {
@ -623,18 +619,11 @@ static MPMarshalledUser *mpw_marshall_read_flat(
return NULL;
}
mpw_free_string( str_lastUsed );
mpw_free_string( str_uses );
mpw_free_string( str_type );
mpw_free_string( str_algorithm );
mpw_free_string( str_counter );
mpw_free_string( siteLoginName );
mpw_free_string( siteName );
mpw_free_string( siteContent );
mpw_free_strings( &str_lastUsed, &str_uses, &str_type, &str_algorithm, &str_counter, NULL );
mpw_free_strings( &siteLoginName, &siteName, &siteContent, NULL );
}
mpw_free_string( fullName );
mpw_free_string( keyID );
mpw_free( masterKey, MPMasterKeySize );
mpw_free_strings( &fullName, &keyID, NULL );
mpw_free( &masterKey, MPMasterKeySize );
*error = (MPMarshallError){ .type = MPMarshallSuccess };
return user;
@ -796,6 +785,7 @@ static MPMarshalledUser *mpw_marshall_read_json(
if (siteLoginName && strlen( siteLoginName ))
site->loginContent = mpw_siteState( masterKey, site->name, MPCounterValueInitial,
MPKeyPurposeIdentification, NULL, site->loginType, siteLoginName, site->algorithm );
dbg( "site->content: %p\n", (void *)site->content );
}
else {
// Redacted
@ -803,6 +793,7 @@ static MPMarshalledUser *mpw_marshall_read_json(
site->content = strdup( siteContent );
if (siteLoginName && strlen( siteLoginName ))
site->loginContent = strdup( siteLoginName );
dbg( "site->content: %p\n", (void *)site->content );
}
json_object_iter json_site_question;

4
core/c/mpw-marshall.h
View File

@ -130,9 +130,9 @@ MPMarshalledQuestion *mpw_marshal_question(
MPMarshalledSite *site, const char *keyword);
/** Free the given user object and all associated data. */
bool mpw_marshal_info_free(
MPMarshallInfo *info);
MPMarshallInfo **info);
bool mpw_marshal_free(
MPMarshalledUser *user);
MPMarshalledUser **user);
//// Format.

54
core/c/mpw-util.c
View File

@ -39,7 +39,7 @@
int mpw_verbosity = inf_level;
#endif
bool mpw_push_buf(uint8_t **const buffer, size_t *const bufferSize, const void *pushBuffer, const size_t pushSize) {
bool mpw_push_buf(uint8_t **buffer, size_t *bufferSize, const void *pushBuffer, const size_t pushSize) {
if (!buffer || !bufferSize || !pushBuffer || !pushSize)
return false;
@ -49,9 +49,8 @@ bool mpw_push_buf(uint8_t **const buffer, size_t *const bufferSize, const void *
if (!mpw_realloc( buffer, bufferSize, pushSize )) {
// realloc failed, we can't push. Mark the buffer as broken.
mpw_free( *buffer, *bufferSize );
mpw_free( buffer, *bufferSize );
*bufferSize = (size_t)ERR;
*buffer = NULL;
return false;
}
@ -60,12 +59,12 @@ bool mpw_push_buf(uint8_t **const buffer, size_t *const bufferSize, const void *
return true;
}
bool mpw_push_string(uint8_t **const buffer, size_t *const bufferSize, const char *pushString) {
bool mpw_push_string(uint8_t **buffer, size_t *bufferSize, const char *pushString) {
return pushString && mpw_push_buf( buffer, bufferSize, pushString, strlen( pushString ) );
}
bool mpw_string_push(char **const string, const char *pushString) {
bool mpw_string_push(char **string, const char *pushString) {
if (!*string)
*string = calloc( 1, sizeof( char ) );
@ -74,29 +73,29 @@ bool mpw_string_push(char **const string, const char *pushString) {
return pushString && mpw_push_buf( (uint8_t **const)string, &stringLength, pushString, strlen( pushString ) + 1 );
}
bool mpw_string_pushf(char **const string, const char *pushFormat, ...) {
bool mpw_string_pushf(char **string, const char *pushFormat, ...) {
va_list args;
va_start( args, pushFormat );
char *pushString = NULL;
bool success = vasprintf( &pushString, pushFormat, args ) >= 0 && mpw_string_push( string, pushString );
va_end( args );
mpw_free_string( pushString );
mpw_free_string( &pushString );
return success;
}
bool mpw_push_int(uint8_t **const buffer, size_t *const bufferSize, const uint32_t pushInt) {
bool mpw_push_int(uint8_t **buffer, size_t *bufferSize, const uint32_t pushInt) {
return mpw_push_buf( buffer, bufferSize, &pushInt, sizeof( pushInt ) );
}
bool __mpw_realloc(void **buffer, size_t *bufferSize, const size_t deltaSize) {
bool __mpw_realloc(const void **buffer, size_t *bufferSize, const size_t deltaSize) {
if (!buffer)
return false;
void *newBuffer = realloc( *buffer, (bufferSize? *bufferSize: 0) + deltaSize );
void *newBuffer = realloc( (void *)*buffer, (bufferSize? *bufferSize: 0) + deltaSize );
if (!newBuffer)
return false;
@ -107,24 +106,31 @@ bool __mpw_realloc(void **buffer, size_t *bufferSize, const size_t deltaSize) {
return true;
}
bool mpw_free(const void *buffer, const size_t bufferSize) {
bool __mpw_free(const void **buffer, const size_t bufferSize) {
if (!buffer)
if (!buffer || !*buffer)
return false;
memset( (void *)buffer, 0, bufferSize );
free( (void *)buffer );
memset( (void *)*buffer, 0, bufferSize );
free( (void *)*buffer );
*buffer = NULL;
return true;
}
bool mpw_free_string(const char *strings, ...) {
bool __mpw_free_string(const char **string) {
return *string && __mpw_free( (const void **)string, strlen( *string ) );
}
bool __mpw_free_strings(const char **strings, ...) {
bool success = true;
va_list args;
va_start( args, strings );
const char *string = va_arg( args, const char * );
success &= string && mpw_free( string, strlen( string ) );
for (const char **string; (string = va_arg( args, const char ** ));)
success &= mpw_free_string( string );
va_end( args );
return success;
@ -142,12 +148,12 @@ uint8_t const *mpw_kdf_scrypt(const size_t keySize, const char *secret, const ui
#if HAS_CPERCIVA
if (crypto_scrypt( (const uint8_t *)secret, strlen( secret ), salt, saltSize, N, r, p, key, keySize ) < 0) {
mpw_free( key, keySize );
mpw_free( &key, keySize );
return NULL;
}
#elif HAS_SODIUM
if (crypto_pwhash_scryptsalsa208sha256_ll( (const uint8_t *)secret, strlen( secret ), salt, saltSize, N, r, p, key, keySize ) != 0) {
mpw_free( key, keySize );
mpw_free( &key, keySize );
return NULL;
}
#else
@ -192,7 +198,7 @@ uint8_t const *mpw_kdf_blake2b(const size_t subkeySize, const uint8_t *key, cons
memcpy( personalBuf, personal, strlen( personal ) );
if (crypto_generichash_blake2b_salt_personal( subkey, subkeySize, context, contextSize, key, keySize, saltBuf, personalBuf ) != 0) {
mpw_free( subkey, subkeySize );
mpw_free( &subkey, subkeySize );
return NULL;
}
#else
@ -222,7 +228,7 @@ uint8_t const *mpw_hash_hmac_sha256(const uint8_t *key, const size_t keySize, co
if (crypto_auth_hmacsha256_init( &state, key, keySize ) != 0 ||
crypto_auth_hmacsha256_update( &state, message, messageSize ) != 0 ||
crypto_auth_hmacsha256_final( &state, mac ) != 0) {
mpw_free( mac, crypto_auth_hmacsha256_BYTES );
mpw_free( &mac, crypto_auth_hmacsha256_BYTES );
return NULL;
}
#else
@ -248,7 +254,7 @@ static uint8_t const *mpw_aes(bool encrypt, const uint8_t *key, const size_t key
if (encrypt) {
uint8_t *const cipherBuf = malloc( bufSize );
if (crypto_stream_aes128ctr_xor( cipherBuf, buf, bufSize, nonce, key ) != 0) {
mpw_free( cipherBuf, bufSize );
mpw_free( &cipherBuf, bufSize );
return NULL;
}
return cipherBuf;
@ -256,7 +262,7 @@ static uint8_t const *mpw_aes(bool encrypt, const uint8_t *key, const size_t key
else {
uint8_t *const plainBuf = malloc( bufSize );
if (crypto_stream_aes128ctr( plainBuf, bufSize, nonce, key ) != 0) {
mpw_free( plainBuf, bufSize );
mpw_free( &plainBuf, bufSize );
return NULL;
}
for (size_t c = 0; c < bufSize; ++c)
@ -415,7 +421,7 @@ const char *mpw_identicon(const char *fullName, const char *masterPassword) {
accessory[identiconSeed[3] % (sizeof( accessory ) / sizeof( accessory[0] ))],
resetString );
mpw_free( identiconSeed, 32 );
mpw_free( &identiconSeed, 32 );
free( colorString );
free( resetString );
return identicon;

35
core/c/mpw-util.h
View File

@ -106,18 +106,18 @@ extern int mpw_verbosity;
/** Push a buffer onto a buffer. reallocs the given buffer and appends the given buffer. */
bool mpw_push_buf(
uint8_t **const buffer, size_t *const bufferSize, const void *pushBuffer, const size_t pushSize);
uint8_t ** buffer, size_t *bufferSize, const void *pushBuffer, const size_t pushSize);
/** Push a string onto a buffer. reallocs the given buffer and appends the given string. */
bool mpw_push_string(
uint8_t **buffer, size_t *const bufferSize, const char *pushString);
uint8_t **buffer, size_t *bufferSize, const char *pushString);
/** Push a string onto another string. reallocs the target string and appends the source string. */
bool mpw_string_push(
char **const string, const char *pushString);
char **string, const char *pushString);
bool mpw_string_pushf(
char **const string, const char *pushFormat, ...);
char **string, const char *pushFormat, ...);
/** Push an integer onto a buffer. reallocs the given buffer and appends the given integer. */
bool mpw_push_int(
uint8_t **const buffer, size_t *const bufferSize, const uint32_t pushInt);
uint8_t **buffer, size_t *bufferSize, const uint32_t pushInt);
/** 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.
@ -128,14 +128,23 @@ bool mpw_push_int(
* @return true if successful, false if reallocation failed.
*/
#define mpw_realloc(buffer, bufferSize, deltaSize) \
__mpw_realloc( (void **)buffer, bufferSize, deltaSize )
bool __mpw_realloc(void **buffer, size_t *bufferSize, const size_t deltaSize);
/** Free a buffer after zero'ing its contents. */
bool mpw_free(
const void *buffer, const size_t bufferSize);
/** Free a string after zero'ing its contents. */
bool mpw_free_string(
const char *strings, ...);
({ typeof(buffer) _b = buffer; const void *__b = *_b; __mpw_realloc( (const void **)_b, bufferSize, deltaSize ); })
bool __mpw_realloc(const void **buffer, size_t *bufferSize, const size_t deltaSize);
/** Free a buffer after zero'ing its contents, then set the reference to NULL. */
#define mpw_free(buffer, bufferSize) \
({ typeof(buffer) _b = buffer; const void *__b = *_b; __mpw_free((const void **)_b, bufferSize); })
bool __mpw_free(
const void **buffer, const size_t bufferSize);
/** Free a string after zero'ing its contents, then set the reference to NULL. */
#define mpw_free_string(string) \
({ typeof(string) _s = string; const char *__s = *_s; __mpw_free_string((const char **)_s); })
bool __mpw_free_string(
const 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, ...) \
({ typeof(strings) _s = strings; const char *__s = *_s; __mpw_free_strings((const char **)strings, __VA_ARGS__); })
bool __mpw_free_strings(
const char **strings, ...);
//// Cryptographic functions.

6
platform-darwin/Source/MPAppDelegate_Store.m
View File

@ -580,7 +580,7 @@ PearlAssociatedObjectProperty( NSNumber*, StoreCorrupted, storeCorrupted );
importMasterPassword = askImportPassword( @(info->fullName) );
if (!importMasterPassword) {
inf( @"Import cancelled." );
mpw_marshal_info_free( info );
mpw_marshal_info_free( &info );
return MPError( ([NSError errorWithDomain:NSCocoaErrorDomain code:NSUserCancelledError userInfo:nil]), @"" );
}
@ -591,7 +591,7 @@ PearlAssociatedObjectProperty( NSNumber*, StoreCorrupted, storeCorrupted );
// Parse import data.
MPMarshallError importError = { .type = MPMarshallSuccess };
MPMarshalledUser *importUser = mpw_marshall_read( importData.UTF8String, info->format, importMasterPassword.UTF8String, &importError );
mpw_marshal_info_free( info );
mpw_marshal_info_free( &info );
@try {
if (!importUser || importError.type != MPMarshallSuccess)
@ -677,7 +677,7 @@ PearlAssociatedObjectProperty( NSNumber*, StoreCorrupted, storeCorrupted );
return nil;
}
@finally {
mpw_marshal_free( importUser );
mpw_marshal_free( &importUser );
}
}

2
platform-darwin/Source/iOS/MPiOSAppDelegate.m
View File

@ -248,7 +248,7 @@
[self importSites:importData];
[UIPasteboard generalPasteboard].string = @"";
} cancelTitle:@"No" otherTitles:@"Import Sites", nil];
mpw_marshal_info_free( importInfo );
mpw_marshal_info_free( &importInfo );
} );
[super applicationDidBecomeActive:application];

122
platform-independent/cli-c/cli/mpw-cli.c
View File

@ -242,7 +242,7 @@ int main(int argc, char *const argv[]) {
ftl( "Unexpected option: %c\n", opt );
return EX_USAGE;
}
if (optind < argc)
if (optind < argc && argv[optind])
siteNameArg = strdup( argv[optind] );
// Determine fullName, siteName & masterPassword.
@ -250,7 +250,7 @@ int main(int argc, char *const argv[]) {
if (!(fullNameArg && (fullName = strdup( fullNameArg ))) &&
!(fullName = mpw_getline( "Your full name:" ))) {
ftl( "Missing full name.\n" );
mpw_free_string( fullName, masterPassword, siteName );
mpw_free_strings( &fullName, &masterPassword, &siteName, NULL );
return EX_DATAERR;
}
if (!(masterPasswordArg && (masterPassword = strdup( masterPasswordArg ))))
@ -259,7 +259,7 @@ int main(int argc, char *const argv[]) {
if (!(siteNameArg && (siteName = strdup( siteNameArg ))) &&
!(siteName = mpw_getline( "Site name:" ))) {
ftl( "Missing site name.\n" );
mpw_free_string( fullName, masterPassword, siteName );
mpw_free_strings( &fullName, &masterPassword, &siteName, NULL );
return EX_DATAERR;
}
MPMarshallFormat sitesFormat = MPMarshallFormatDefault;
@ -267,7 +267,7 @@ int main(int argc, char *const argv[]) {
sitesFormat = mpw_formatWithName( sitesFormatArg );
if (ERR == (int)sitesFormat) {
ftl( "Invalid sites format: %s\n", sitesFormatArg );
mpw_free_string( fullName, masterPassword, siteName );
mpw_free_strings( &fullName, &masterPassword, &siteName, NULL );
return EX_USAGE;
}
}
@ -280,7 +280,7 @@ int main(int argc, char *const argv[]) {
// Try to fall back to the flat format.
if (!sitesFormatFixed) {
mpw_free_string( sitesPath );
mpw_free_string( &sitesPath );
sitesPath = mpw_path( fullName, mpw_marshall_format_extension( MPMarshallFormatFlat ) );
if (sitesPath && (sitesFile = fopen( sitesPath, "r" )))
sitesFormat = MPMarshallFormatFlat;
@ -293,10 +293,9 @@ int main(int argc, char *const argv[]) {
MPMarshalledUser *user = NULL;
MPMarshalledSite *site = NULL;
MPMarshalledQuestion *question = NULL;
if (!sitesFile) {
mpw_free_string( sitesPath );
sitesPath = NULL;
}
if (!sitesFile)
mpw_free_string( &sitesPath );
else {
// Read file.
size_t blockSize = 4096, bufSize = 0, bufOffset = 0, readSize = 0;
@ -312,15 +311,15 @@ int main(int argc, char *const argv[]) {
MPMarshallInfo *sitesInputInfo = mpw_marshall_read_info( sitesInputData );
MPMarshallFormat sitesInputFormat = sitesFormatArg? sitesFormat: sitesInputInfo->format;
MPMarshallError marshallError = { .type = MPMarshallSuccess };
mpw_marshal_info_free( sitesInputInfo );
mpw_marshal_info_free( &sitesInputInfo );
user = mpw_marshall_read( sitesInputData, sitesInputFormat, masterPassword, &marshallError );
if (marshallError.type == MPMarshallErrorMasterPassword) {
// Incorrect master password.
if (!allowPasswordUpdate) {
ftl( "Incorrect master password according to configuration:\n %s: %s\n", sitesPath, marshallError.description );
mpw_marshal_free( user );
mpw_free( sitesInputData, bufSize );
mpw_free_string( sitesPath, fullName, masterPassword, siteName );
mpw_marshal_free( &user );
mpw_free( &sitesInputData, bufSize );
mpw_free_strings( &sitesPath, &fullName, &masterPassword, &siteName, NULL );
return EX_DATAERR;
}
@ -333,27 +332,25 @@ int main(int argc, char *const argv[]) {
while (!importMasterPassword || !strlen( importMasterPassword ))
importMasterPassword = mpw_getpass( "Old master password: " );
mpw_marshal_free( user );
mpw_marshal_free( &user );
user = mpw_marshall_read( sitesInputData, sitesInputFormat, importMasterPassword, &marshallError );
mpw_free_string( importMasterPassword );
mpw_free_string( &importMasterPassword );
}
if (user) {
mpw_free_string( user->masterPassword );
mpw_free_string( &user->masterPassword );
user->masterPassword = strdup( masterPassword );
}
}
mpw_free( sitesInputData, bufSize );
mpw_free( &sitesInputData, bufSize );
if (!user || marshallError.type != MPMarshallSuccess) {
err( "Couldn't parse configuration file:\n %s: %s\n", sitesPath, marshallError.description );
mpw_marshal_free( user );
user = NULL;
mpw_free_string( sitesPath );
sitesPath = NULL;
mpw_marshal_free( &user );
mpw_free_string( &sitesPath );
}
}
if (!user)
user = mpw_marshall_user( fullName, masterPassword, MPAlgorithmVersionCurrent );
mpw_free_string( fullName, masterPassword );
mpw_free_strings( &fullName, &masterPassword, NULL );
// Load the site object.
for (size_t s = 0; s < user->sites_count; ++s) {
@ -366,7 +363,7 @@ int main(int argc, char *const argv[]) {
}
if (!site)
site = mpw_marshall_site( user, siteName, MPResultTypeDefault, MPCounterValueDefault, user->algorithm );
mpw_free_string( siteName );
mpw_free_string( &siteName );
// Load the purpose and context / question object.
MPKeyPurpose keyPurpose = MPKeyPurposeAuthentication;
@ -374,8 +371,8 @@ int main(int argc, char *const argv[]) {
keyPurpose = mpw_purposeWithName( keyPurposeArg );
if (ERR == (int)keyPurpose) {
ftl( "Invalid purpose: %s\n", keyPurposeArg );
mpw_marshal_free( user );
mpw_free_string( sitesPath );
mpw_marshal_free( &user );
mpw_free_string( &sitesPath );
return EX_USAGE;
}
}
@ -413,23 +410,23 @@ int main(int argc, char *const argv[]) {
case MPKeyPurposeAuthentication: {
purposeResult = "password";
resultType = site->type;
resultState = strdup( site->content );
resultState = site->content? strdup( site->content ): NULL;
siteCounter = site->counter;
break;
}
case MPKeyPurposeIdentification: {
purposeResult = "login";
resultType = site->loginType;
resultState = strdup( site->loginContent );
resultState = site->loginContent? strdup( site->loginContent ): NULL;
siteCounter = MPCounterValueInitial;
break;
}
case MPKeyPurposeRecovery: {
mpw_free_string( keyContext );
mpw_free_string( &keyContext );
purposeResult = "answer";
keyContext = strdup( question->keyword );
keyContext = question->keyword? strdup( question->keyword ): NULL;
resultType = question->type;
resultState = strdup( question->content );
resultState = question->content? strdup( question->content ): NULL;
siteCounter = MPCounterValueInitial;
break;
}
@ -440,8 +437,8 @@ int main(int argc, char *const argv[]) {
resultType = mpw_typeWithName( resultTypeArg );
if (ERR == (int)resultType) {
ftl( "Invalid type: %s\n", resultTypeArg );
mpw_marshal_free( user );
mpw_free_string( sitesPath, resultState, keyContext );
mpw_marshal_free( &user );
mpw_free_strings( &sitesPath, &resultState, &keyContext, NULL );
return EX_USAGE;
}
@ -463,8 +460,8 @@ int main(int argc, char *const argv[]) {
long long int siteCounterInt = atoll( siteCounterArg );
if (siteCounterInt < MPCounterValueFirst || siteCounterInt > MPCounterValueLast) {
ftl( "Invalid site counter: %s\n", siteCounterArg );
mpw_marshal_free( user );
mpw_free_string( sitesPath, resultState, keyContext );
mpw_marshal_free( &user );
mpw_free_strings( &sitesPath, &resultState, &keyContext, NULL );
return EX_USAGE;
}
@ -485,8 +482,8 @@ int main(int argc, char *const argv[]) {
int algorithmVersionInt = atoi( algorithmVersionArg );
if (algorithmVersionInt < MPAlgorithmVersionFirst || algorithmVersionInt > MPAlgorithmVersionLast) {
ftl( "Invalid algorithm version: %s\n", algorithmVersionArg );
mpw_marshal_free( user );
mpw_free_string( sitesPath, resultState, keyContext, resultParam );
mpw_marshal_free( &user );
mpw_free_strings( &sitesPath, &resultState, &keyContext, &resultParam, NULL );
return EX_USAGE;
}
site->algorithm = (MPAlgorithmVersion)algorithmVersionInt;
@ -495,9 +492,9 @@ int main(int argc, char *const argv[]) {
user->redacted = strcmp( sitesRedactedArg, "1" ) == 0;
else if (!user->redacted)
wrn( "Sites configuration is not redacted. Use -R 1 to change this.\n" );
mpw_free_string( fullNameArg, masterPasswordArg, siteNameArg );
mpw_free_string( resultTypeArg, resultParamArg, siteCounterArg, algorithmVersionArg);
mpw_free_string( keyPurposeArg, keyContextArg, sitesFormatArg, sitesRedactedArg );
mpw_free_strings( &fullNameArg, &masterPasswordArg, &siteNameArg, NULL );
mpw_free_strings( &resultTypeArg, &resultParamArg, &siteCounterArg, &algorithmVersionArg, NULL );
mpw_free_strings( &keyPurposeArg, &keyContextArg, &sitesFormatArg, &sitesRedactedArg, NULL );
// Operation summary.
const char *identicon = mpw_identicon( user->fullName, user->masterPassword );
@ -518,75 +515,74 @@ int main(int argc, char *const argv[]) {
dbg( "algorithmVersion : %u\n", site->algorithm );
dbg( "-----------------\n\n" );
inf( "%s's %s for %s:\n[ %s ]: ", user->fullName, purposeResult, site->name, identicon );
mpw_free_string( identicon, sitesPath );
mpw_free_strings( &identicon, &sitesPath, NULL );
// Determine master key.
MPMasterKey masterKey = mpw_masterKey(
user->fullName, user->masterPassword, site->algorithm );
if (!masterKey) {
ftl( "Couldn't derive master key.\n" );
mpw_marshal_free( user );
mpw_free_string( resultState, keyContext, resultParam );
mpw_marshal_free( &user );
mpw_free_strings( &resultState, &keyContext, &resultParam, NULL );
return EX_SOFTWARE;
}
// Update state.
if (resultParam && resultType & MPResultTypeClassStateful) {
mpw_free_string( resultState );
mpw_free_string( &resultState );
if (!(resultState = mpw_siteState( masterKey, site->name, siteCounter,
keyPurpose, keyContext, resultType, resultParam, site->algorithm ))) {
ftl( "Couldn't encrypt site result.\n" );
mpw_free( masterKey, MPMasterKeySize );
mpw_marshal_free( user );
mpw_free_string( resultState, keyContext, resultParam );
mpw_free( &masterKey, MPMasterKeySize );
mpw_marshal_free( &user );
mpw_free_strings( &resultState, &keyContext, &resultParam, NULL );
return EX_SOFTWARE;
}
inf( "(state) %s => ", resultState );
switch (keyPurpose) {
case MPKeyPurposeAuthentication: {
mpw_free_string( site->content );
site->content = resultState;
mpw_free_string( &site->content );
site->content = strdup( resultState );
dbg( "site->content: %p", (void *)site->content );
break;
}
case MPKeyPurposeIdentification: {
mpw_free_string( site->loginContent );
site->loginContent = resultState;
mpw_free_string( &site->loginContent );
site->loginContent = strdup( resultState );
break;
}
case MPKeyPurposeRecovery: {
mpw_free_string( question->content );
question->content = resultState;
mpw_free_string( &question->content );
question->content = strdup( resultState );
break;
}
}
// resultParam is consumed.
mpw_free_string( resultParam );
resultParam = NULL;
mpw_free_string( &resultParam );
}
// Second phase resultParam defaults to state.
if (!resultParam && resultState)
resultParam = strdup( resultState );
mpw_free_string( resultState );
mpw_free_string( &resultState );
// Generate result.
const char *result = mpw_siteResult( masterKey, site->name, siteCounter,
keyPurpose, keyContext, resultType, resultParam, site->algorithm );
mpw_free( &masterKey, MPMasterKeySize );
mpw_free_strings( &keyContext, &resultParam, NULL );
if (!result) {
ftl( "Couldn't generate site result.\n" );
mpw_free( masterKey, MPMasterKeySize );
mpw_marshal_free( user );
mpw_free_string( resultState, keyContext, resultParam );
mpw_marshal_free( &user );
return EX_SOFTWARE;
}
fprintf( stdout, "%s\n", result );
if (site->url)
inf( "See: %s\n", site->url );
mpw_free( masterKey, MPMasterKeySize );
mpw_free_string( keyContext, resultParam, result );
mpw_free_string( &result );
// Update usage metadata.
site->lastUsed = user->lastUsed = time( NULL );
@ -611,12 +607,12 @@ int main(int argc, char *const argv[]) {
else if (fwrite( buf, sizeof( char ), strlen( buf ), sitesFile ) != strlen( buf ))
wrn( "Error while writing updated configuration file:\n %s: %d\n", sitesPath, ferror( sitesFile ) );
mpw_free_string( buf );
mpw_free_string( &buf );
fclose( sitesFile );
}
mpw_free_string( sitesPath );
mpw_free_string( &sitesPath );
}
mpw_marshal_free( user );
mpw_marshal_free( &user );
return 0;
}

4
platform-independent/cli-c/cli/mpw-tests.c
View File

@ -56,7 +56,7 @@ int main(int argc, char *const argv[]) {
// 2. calculate the site password.
const char *sitePassword = mpw_siteResult(
masterKey, (char *)siteName, siteCounter, keyPurpose, (char *)keyContext, resultType, NULL, algorithm );
mpw_free( masterKey, MPMasterKeySize );
mpw_free( &masterKey, MPMasterKeySize );
if (!sitePassword) {
ftl( "Couldn't derive site password.\n" );
continue;
@ -72,7 +72,7 @@ int main(int argc, char *const argv[]) {
}
// Free test case.
mpw_free_string( sitePassword );
mpw_free_string( &sitePassword );
xmlFree( id );
xmlFree( fullName );
xmlFree( masterPassword );