KeychainCircle/NSError+KCCreationHelpers.m

   1 //
   2 //  NSError+KCCreationHelpers.m
   3 //  KechainCircle
   4 //
   5 //
   6
   7 #import <Foundation/Foundation.h>
   8
   9 #import <NSError+KCCreationHelpers.h>
  10
  11 static NSString* coreCryptoDomain = @"kSecCoreCryptoDomain";
  12 static NSString* srpDomain = @"com.apple.security.srp";
  13
  14 static NSDictionary* UserInfoFromVA(NSString*description, va_list va)
  15     NS_FORMAT_FUNCTION(1, 0);
  16
  17 static NSDictionary* UserInfoFromVA(NSString*description, va_list va) {
  18     return @{NSLocalizedDescriptionKey:[[NSString alloc] initWithFormat:description
  19                                                               arguments:va]};
  20 }
  21
  22 // We should get this from SecCFError.h and Security.framework..
  23 bool CoreCryptoError(int cc_result, NSError** error, NSString* description, ...)
  24 {
  25     bool failed = cc_result != 0;
  26
  27     if (failed && error && !*error) {
  28         va_list va;
  29         va_start(va, description);
  30         *error = [NSError errorWithCoreCryptoStatus:cc_result
  31                                         description:description
  32                                                args:va];
  33         va_end(va);
  34     }
  35
  36     return !failed;
  37 }
  38
  39 bool OSStatusError(OSStatus status, NSError** error, NSString*description, ...) {
  40     bool failed = status != 0;
  41
  42     if (failed && error && !*error) {
  43         va_list va;
  44         va_start(va, description);
  45         *error = [NSError errorWithOSStatus:status
  46                                 description:description
  47                                        args:va];
  48         va_end(va);
  49     }
  50
  51     return !failed;
  52 }
  53
  54 bool RequirementError(bool requirement, NSError** error, NSString*description, ...) {
  55     bool failed = !requirement;
  56
  57     if (failed && error && !*error) {
  58         va_list va;
  59         va_start(va, description);
  60         *error = [NSError errorWithOSStatus:-50
  61                                 description:description
  62                                        args:va];
  63         va_end(va);
  64     }
  65
  66     return !failed;
  67 }
  68
  69
  70 @implementation NSError(KCCreationHelpers)
  71
  72 + (instancetype) errorWithOSStatus:(OSStatus) status
  73                           userInfo:(NSDictionary *)dict {
  74     return [[NSError alloc] initWithOSStatus:status userInfo:dict];
  75 }
  76
  77 - (instancetype) initWithOSStatus:(OSStatus) status
  78                          userInfo:(NSDictionary *)dict {
  79     return [self initWithDomain:NSOSStatusErrorDomain code:status userInfo:dict];
  80 }
  81
  82 + (instancetype) errorWithOSStatus:(OSStatus) status
  83                        description:(NSString*)description
  84                               args:(va_list)va {
  85     return [[NSError alloc] initWithOSStatus:status description:description args:va];
  86 }
  87
  88 - (instancetype) initWithOSStatus:(OSStatus) status
  89                       description:(NSString*)description
  90                              args:(va_list)va {
  91     return [self initWithOSStatus:status
  92                          userInfo:UserInfoFromVA(description, va)];
  93 }
  94
  95 + (instancetype) errorWithCoreCryptoStatus:(int) status
  96                                  userInfo:(NSDictionary *)dict {
  97     return [[NSError alloc] initWithCoreCryptoStatus:status userInfo:dict];
  98 }
  99
 100
 101 - (instancetype) initWithCoreCryptoStatus:(int) status
 102                                  userInfo:(NSDictionary *)dict {
 103     return [self initWithDomain:coreCryptoDomain code:status userInfo:dict];
 104 }
 105
 106 + (instancetype) errorWithCoreCryptoStatus:(int) status
 107                                description:(NSString*)description
 108                                       args:(va_list)va {
 109     return [[NSError alloc] initWithCoreCryptoStatus:status description:description args:va];
 110 }
 111
 112 - (instancetype) initWithCoreCryptoStatus:(int) status
 113                               description:(NSString*)description
 114                                      args:(va_list)va {
 115     return [self initWithCoreCryptoStatus:status
 116                                  userInfo:UserInfoFromVA(description, va)];
 117 }
 118
 119 @end