skylab/MasterPassword
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Fix some potential crashes and memory leaks.

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This commit is contained in:
Maarten Billemont 2016-07-19 12:00:19 -04:00
parent a72d893203
commit ba00d89b99
4 changed files with 31 additions and 75 deletions
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6
MasterPassword/C/mpw-util.c
View File

@ -54,8 +54,10 @@ void mpw_pushInt(uint8_t **const buffer, size_t *const bufferSize, const uint32_
void mpw_free(const void *buffer, const size_t bufferSize) {
memset( (void *)buffer, 0, bufferSize );
free( (void *)buffer );
if (buffer) {
memset( (void *)buffer, 0, bufferSize );
free( (void *)buffer );
}
}
void mpw_freeString(const char *string) {

16
MasterPassword/ObjC/MPAlgorithmV0.m
View File

@ -140,10 +140,12 @@ NSOperationQueue *_mpwQueue = nil;
[self mpw_perform:^{
NSDate *start = [NSDate date];
uint8_t const *masterKeyBytes = mpw_masterKeyForUser( fullName.UTF8String, masterPassword.UTF8String, [self version] );
keyData = [NSData dataWithBytes:masterKeyBytes length:MP_dkLen];
trc( @"User: %@, password: %@ derives to key ID: %@ (took %0.2fs)", //
fullName, masterPassword, [self keyIDForKeyData:keyData], -[start timeIntervalSinceNow] );
mpw_free( masterKeyBytes, MP_dkLen );
if (masterKeyBytes) {
keyData = [NSData dataWithBytes:masterKeyBytes length:MP_dkLen];
trc( @"User: %@, password: %@ derives to key ID: %@ (took %0.2fs)", //
fullName, masterPassword, [self keyIDForKeyData:keyData], -[start timeIntervalSinceNow] );
mpw_free( masterKeyBytes, MP_dkLen );
}
}];
return keyData;
@ -358,8 +360,10 @@ NSOperationQueue *_mpwQueue = nil;
[self mpw_perform:^{
char const *contentBytes = mpw_passwordForSite( [key keyDataForAlgorithm:self].bytes,
name.UTF8String, type, (uint32_t)counter, variant, context.UTF8String, [self version] );
content = [NSString stringWithCString:contentBytes encoding:NSUTF8StringEncoding];
mpw_freeString( contentBytes );
if (contentBytes) {
content = [NSString stringWithCString:contentBytes encoding:NSUTF8StringEncoding];
mpw_freeString( contentBytes );
}
}];
return content;

4
MasterPassword/ObjC/MPAppDelegate_Key.m
View File

@ -26,7 +26,7 @@ static NSDictionary *createKeyQuery(MPUserEntity *user, BOOL newItem, MPKeyOrigi
*keyOrigin = MPKeyOriginKeyChainBiometric;
CFErrorRef acError = NULL;
SecAccessControlRef accessControl = SecAccessControlCreateWithFlags( kCFAllocatorDefault,
id accessControl = (__bridge_transfer id)SecAccessControlCreateWithFlags( kCFAllocatorDefault,
kSecAttrAccessibleWhenPasscodeSetThisDeviceOnly, kSecAccessControlTouchIDCurrentSet, &acError );
if (!accessControl || acError)
err( @"Could not use TouchID on this device: %@", acError );
@ -36,7 +36,7 @@ static NSDictionary *createKeyQuery(MPUserEntity *user, BOOL newItem, MPKeyOrigi
attributes:@{
(__bridge id)kSecAttrService : @"Saved Master Password",
(__bridge id)kSecAttrAccount : user.name?: @"",
(__bridge id)kSecAttrAccessControl : (__bridge id)accessControl,
(__bridge id)kSecAttrAccessControl : accessControl,
(__bridge id)kSecUseAuthenticationUI : (__bridge id)kSecUseAuthenticationUIAllow,
(__bridge id)kSecUseOperationPrompt :
strf( @"Access %@'s master password.", user.name ),

80
MasterPassword/ObjC/iOS/MasterPassword-Prefix.pch
View File

@ -31,76 +31,26 @@
#import <objc/NSObjCRuntime.h>
#import <stdlib.h>
#define trc(format, ...) \
#define log(level, format, ...) \
do { \
void (*_sendMsg)(id, SEL, CFStringRef, NSInteger, CFStringRef, NSUInteger, CFStringRef) = (void *)objc_msgSend; \
char *_msg = NULL; \
asprintf( &_msg, format, ##__VA_ARGS__ ); \
void (*_sendMsg)(id, SEL, CFStringRef, NSInteger, CFStringRef, NSUInteger, CFStringRef) = (void *)objc_msgSend; \
CFStringRef fileStr = CFStringCreateWithCString( NULL, basename( (char *)__FILE__ ), kCFStringEncodingUTF8 ); \
CFStringRef funcStr = CFStringCreateWithCString( NULL, __FUNCTION__, kCFStringEncodingUTF8 ); \
CFStringRef msgStr = CFStringCreateWithCString( NULL, _msg, kCFStringEncodingUTF8 ); \
_sendMsg( objc_msgSend( (id)objc_getClass( "PearlLogger" ), sel_getUid( "get" ) ), \
sel_getUid( "inFile:atLine:fromFunction:withLevel:text:" ), \
CFStringCreateWithCString( NULL, basename( (char *)__FILE__ ), kCFStringEncodingUTF8 ), __LINE__, \
CFStringCreateWithCString( NULL, __FUNCTION__, kCFStringEncodingUTF8 ), 0, \
CFStringCreateWithCString( NULL, _msg, kCFStringEncodingUTF8 ) ); \
sel_getUid( "inFile:atLine:fromFunction:withLevel:text:" ), fileStr, __LINE__, funcStr, level, msgStr ); \
CFRelease( fileStr ); \
CFRelease( funcStr ); \
CFRelease( msgStr ); \
} while (0)
#define dbg(format, ...) \
do { \
char *_msg = NULL; \
asprintf( &_msg, format, ##__VA_ARGS__ ); \
void (*_sendMsg)(id, SEL, CFStringRef, NSInteger, CFStringRef, NSUInteger, CFStringRef) = (void *)objc_msgSend; \
_sendMsg( objc_msgSend( (id)objc_getClass( "PearlLogger" ), sel_getUid( "get" ) ), \
sel_getUid( "inFile:atLine:fromFunction:withLevel:text:" ), \
CFStringCreateWithCString( NULL, basename( (char *)__FILE__ ), kCFStringEncodingUTF8 ), __LINE__, \
CFStringCreateWithCString( NULL, __FUNCTION__, kCFStringEncodingUTF8 ), 1, \
CFStringCreateWithCString( NULL, _msg, kCFStringEncodingUTF8 ) ); \
} while (0)
#define inf(format, ...) \
do { \
char *_msg = NULL; \
asprintf( &_msg, format, ##__VA_ARGS__ ); \
void (*_sendMsg)(id, SEL, CFStringRef, NSInteger, CFStringRef, NSUInteger, CFStringRef) = (void *)objc_msgSend; \
_sendMsg( objc_msgSend( (id)objc_getClass( "PearlLogger" ), sel_getUid( "get" ) ), \
sel_getUid( "inFile:atLine:fromFunction:withLevel:text:" ), \
CFStringCreateWithCString( NULL, basename( (char *)__FILE__ ), kCFStringEncodingUTF8 ), __LINE__, \
CFStringCreateWithCString( NULL, __FUNCTION__, kCFStringEncodingUTF8 ), 2, \
CFStringCreateWithCString( NULL, _msg, kCFStringEncodingUTF8 ) ); \
} while (0)
#define wrn(format, ...) \
do { \
char *_msg = NULL; \
asprintf( &_msg, format, ##__VA_ARGS__ ); \
void (*_sendMsg)(id, SEL, CFStringRef, NSInteger, CFStringRef, NSUInteger, CFStringRef) = (void *)objc_msgSend; \
_sendMsg( objc_msgSend( (id)objc_getClass( "PearlLogger" ), sel_getUid( "get" ) ), \
sel_getUid( "inFile:atLine:fromFunction:withLevel:text:" ), \
CFStringCreateWithCString( NULL, basename( (char *)__FILE__ ), kCFStringEncodingUTF8 ), __LINE__, \
CFStringCreateWithCString( NULL, __FUNCTION__, kCFStringEncodingUTF8 ), 3, \
CFStringCreateWithCString( NULL, _msg, kCFStringEncodingUTF8 ) ); \
} while (0)
#define err(format, ...) \
do { \
char *_msg = NULL; \
asprintf( &_msg, format, ##__VA_ARGS__ ); \
void (*_sendMsg)(id, SEL, CFStringRef, NSInteger, CFStringRef, NSUInteger, CFStringRef) = (void *)objc_msgSend; \
_sendMsg( objc_msgSend( (id)objc_getClass( "PearlLogger" ), sel_getUid( "get" ) ), \
sel_getUid( "inFile:atLine:fromFunction:withLevel:text:" ), \
CFStringCreateWithCString( NULL, basename( (char *)__FILE__ ), kCFStringEncodingUTF8 ), __LINE__, \
CFStringCreateWithCString( NULL, __FUNCTION__, kCFStringEncodingUTF8 ), 4, \
CFStringCreateWithCString( NULL, _msg, kCFStringEncodingUTF8 ) ); \
} while (0)
#define ftl(format, ...) \
do { \
char *_msg = NULL; \
asprintf( &_msg, format, ##__VA_ARGS__ ); \
void (*_sendMsg)(id, SEL, CFStringRef, NSInteger, CFStringRef, NSUInteger, CFStringRef) = (void *)objc_msgSend; \
_sendMsg( objc_msgSend( (id)objc_getClass( "PearlLogger" ), sel_getUid( "get" ) ), \
sel_getUid( "inFile:atLine:fromFunction:withLevel:text:" ), \
CFStringCreateWithCString( NULL, basename( (char *)__FILE__ ), kCFStringEncodingUTF8 ), __LINE__, \
CFStringCreateWithCString( NULL, __FUNCTION__, kCFStringEncodingUTF8 ), 5, \
CFStringCreateWithCString( NULL, _msg, kCFStringEncodingUTF8 ) ); \
} while (0)
#define trc(format, ...) log( 0, format, ##__VA_ARGS__ );
#define dbg(format, ...) log( 1, format, ##__VA_ARGS__ );
#define inf(format, ...) log( 2, format, ##__VA_ARGS__ );
#define wrn(format, ...) log( 3, format, ##__VA_ARGS__ );
#define err(format, ...) log( 4, format, ##__VA_ARGS__ );
#define ftl(format, ...) log( 5, format, ##__VA_ARGS__ );
#endif