OSX/sec/Security/SecSharedCredential.c

   1 /*
   2  * Copyright (c) 2014-2016 Apple Inc. All Rights Reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. Please obtain a copy of the License at
  10  * http://www.opensource.apple.com/apsl/ and read it before using this
  11  * file.
  12  *
  13  * The Original Code and all software distributed under the License are
  14  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  15  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  16  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  18  * Please see the License for the specific language governing rights and
  19  * limitations under the License.
  20  *
  21  * @APPLE_LICENSE_HEADER_END@
  22  *
  23  * SecSharedCredential.c - CoreFoundation-based functions to store and retrieve shared credentials.
  24  *
  25  */
  26
  27
  28 #include <Security/SecSharedCredential.h>
  29 #include <Security/SecBasePriv.h>
  30 #include <utilities/SecCFError.h>
  31 #include <utilities/SecCFWrappers.h>
  32 #include "SecItemInternal.h"
  33 #include <ipc/securityd_client.h>
  34 #include "SecPasswordGenerate.h"
  35
  36 /* forward declarations */
  37 OSStatus SecAddSharedWebCredentialSync(CFStringRef fqdn, CFStringRef account, CFStringRef password, CFErrorRef *error);
  38 OSStatus SecCopySharedWebCredentialSync(CFStringRef fqdn, CFStringRef account, CFArrayRef *credentials, CFErrorRef *error);
  39
  40 #if TARGET_OS_IOS
  41
  42 OSStatus SecAddSharedWebCredentialSync(CFStringRef fqdn,
  43     CFStringRef account,
  44     CFStringRef password,
  45     CFErrorRef *error)
  46 {
  47     OSStatus status;
  48     __block CFErrorRef* outError = error;
  49     __block CFMutableDictionaryRef args = CFDictionaryCreateMutable(kCFAllocatorDefault,
  50         0, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks);
  51     if (fqdn) {
  52         CFDictionaryAddValue(args, kSecAttrServer, fqdn);
  53     }
  54     if (account) {
  55         CFDictionaryAddValue(args, kSecAttrAccount, account);
  56     }
  57     if (password) {
  58         CFDictionaryAddValue(args, kSecSharedPassword, password);
  59     }
  60     status = SecOSStatusWith(^bool (CFErrorRef *error) {
  61         CFTypeRef raw_result = NULL;
  62         bool xpc_result;
  63         bool internal_spi = false; // TODO: support this for SecurityDevTests
  64         if(internal_spi && gSecurityd && gSecurityd->sec_add_shared_web_credential) {
  65             xpc_result = gSecurityd->sec_add_shared_web_credential(args, NULL, NULL, NULL, SecAccessGroupsGetCurrent(), &raw_result, error);
  66         } else {
  67             xpc_result = cftype_client_to_bool_cftype_error_request(sec_add_shared_web_credential_id, args, SecSecurityClientGet(), &raw_result, error);
  68         }
  69         CFReleaseSafe(args);
  70         if (!xpc_result) {
  71             if (NULL == *error) {
  72                 SecError(errSecInternal, error, CFSTR("Internal error (XPC failure)"));
  73             }
  74         }
  75         if (outError) {
  76             *outError = (error) ? *error : NULL;
  77             CFRetainSafe(*outError);
  78         } else {
  79             CFReleaseNull(*error);
  80         }
  81         CFReleaseNull(raw_result);
  82         return xpc_result;
  83     });
  84
  85     return status;
  86 }
  87 #endif /* TARGET_OS_IOS */
  88
  89 void SecAddSharedWebCredential(CFStringRef fqdn,
  90     CFStringRef account,
  91     CFStringRef password,
  92     void (^completionHandler)(CFErrorRef error))
  93 {
  94         __block CFErrorRef error = NULL;
  95         __block dispatch_queue_t dst_queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT,0);
  96 #if TARGET_OS_IOS
  97
  98     /* sanity check input arguments */
  99         CFStringRef errStr = NULL;
 100         if (!fqdn || CFGetTypeID(fqdn) != CFStringGetTypeID() || !CFStringGetLength(fqdn) ||
 101                 !account || CFGetTypeID(account) != CFStringGetTypeID() || !CFStringGetLength(account) ) {
 102                 errStr = CFSTR("fqdn or account was not of type CFString, or not provided");
 103         }
 104         else if (password && CFGetTypeID(password) != CFStringGetTypeID()) {
 105                 errStr = CFSTR("non-nil password was not of type CFString");
 106         }
 107         if (errStr) {
 108                 SecError(errSecParam, &error, errStr);
 109                 dispatch_async(dst_queue, ^{
 110                         if (completionHandler) {
 111                                 completionHandler(error);
 112                         }
 113                         CFReleaseSafe(error);
 114                 });
 115                 return;
 116         }
 117
 118         __block CFStringRef serverStr = CFRetainSafe(fqdn);
 119         __block CFStringRef accountStr = CFRetainSafe(account);
 120         __block CFStringRef passwordStr = CFRetainSafe(password);
 121
 122         dispatch_async(dst_queue, ^{
 123                 OSStatus status = SecAddSharedWebCredentialSync(serverStr, accountStr, passwordStr, &error);
 124                 CFReleaseSafe(serverStr);
 125                 CFReleaseSafe(accountStr);
 126                 CFReleaseSafe(passwordStr);
 127
 128                 if (status && !error) {
 129                         SecError(status, &error, CFSTR("Error adding shared password"));
 130                 }
 131                 dispatch_async(dst_queue, ^{
 132                         if (completionHandler) {
 133                                 completionHandler(error);
 134                         }
 135                         CFReleaseSafe(error);
 136                 });
 137         });
 138 #else
 139     SecError(errSecParam, &error, CFSTR("SharedWebCredentials not supported on this platform"));
 140     dispatch_async(dst_queue, ^{
 141         if (completionHandler) {
 142             completionHandler(error);
 143         }
 144         CFReleaseSafe(error);
 145     });
 146 #endif
 147 }
 148
 149 #if TARGET_OS_IOS
 150 OSStatus SecCopySharedWebCredentialSync(CFStringRef fqdn,
 151     CFStringRef account,
 152     CFArrayRef *credentials,
 153     CFErrorRef *error)
 154 {
 155     OSStatus status;
 156     __block CFErrorRef* outError = error;
 157     __block CFMutableDictionaryRef args = CFDictionaryCreateMutable(kCFAllocatorDefault,
 158         0, &kCFTypeDictionaryKeyCallBacks, &kCFTypeDictionaryValueCallBacks);
 159     if (fqdn) {
 160         CFDictionaryAddValue(args, kSecAttrServer, fqdn);
 161     }
 162     if (account) {
 163         CFDictionaryAddValue(args, kSecAttrAccount, account);
 164     }
 165     status = SecOSStatusWith(^bool (CFErrorRef *error) {
 166         CFTypeRef raw_result = NULL;
 167         bool xpc_result;
 168         bool internal_spi = false; // TODO: support this for SecurityDevTests
 169         if(internal_spi && gSecurityd && gSecurityd->sec_copy_shared_web_credential) {
 170             xpc_result = gSecurityd->sec_copy_shared_web_credential(args, NULL, NULL, NULL, SecAccessGroupsGetCurrent(), &raw_result, error);
 171         } else {
 172             xpc_result = cftype_client_to_bool_cftype_error_request(sec_copy_shared_web_credential_id, args, SecSecurityClientGet(), &raw_result, error);
 173         }
 174         CFReleaseSafe(args);
 175         if (!xpc_result) {
 176             if (NULL == *error) {
 177                 SecError(errSecInternal, error, CFSTR("Internal error (XPC failure)"));
 178             }
 179         }
 180         if (outError) {
 181             *outError = (error) ? *error : NULL;
 182             CFRetainSafe(*outError);
 183         } else {
 184             CFReleaseNull(*error);
 185         }
 186         if (!raw_result) {
 187             raw_result = CFArrayCreateMutable(kCFAllocatorDefault, 0, &kCFTypeArrayCallBacks);
 188         }
 189         *credentials = raw_result;
 190         return xpc_result;
 191     });
 192
 193     return status;
 194 }
 195 #endif /* TARGET_OS_IOS */
 196
 197 void SecRequestSharedWebCredential(CFStringRef fqdn,
 198     CFStringRef account,
 199     void (^completionHandler)(CFArrayRef credentials, CFErrorRef error))
 200 {
 201         __block CFErrorRef error = NULL;
 202         __block dispatch_queue_t dst_queue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT,0);
 203 #if TARGET_OS_IOS
 204     __block CFArrayRef result = NULL;
 205
 206     /* sanity check input arguments, if provided */
 207         CFStringRef errStr = NULL;
 208         if (fqdn && (CFGetTypeID(fqdn) != CFStringGetTypeID() || !CFStringGetLength(fqdn))) {
 209                 errStr = CFSTR("fqdn was empty or not a CFString");
 210     }
 211     else if (account && (CFGetTypeID(account) != CFStringGetTypeID() || !CFStringGetLength(account))) {
 212                 errStr = CFSTR("account was empty or not a CFString");
 213         }
 214         if (errStr) {
 215                 SecError(errSecParam, &error, errStr);
 216                 dispatch_async(dst_queue, ^{
 217                         if (completionHandler) {
 218                                 completionHandler(result, error);
 219                         }
 220                         CFReleaseSafe(error);
 221             CFReleaseSafe(result);
 222                 });
 223                 return;
 224         }
 225
 226     __block CFStringRef serverStr = CFRetainSafe(fqdn);
 227         __block CFStringRef accountStr = CFRetainSafe(account);
 228
 229     dispatch_async(dst_queue, ^{
 230                 OSStatus status = SecCopySharedWebCredentialSync(serverStr, accountStr, &result, &error);
 231                 CFReleaseSafe(serverStr);
 232                 CFReleaseSafe(accountStr);
 233
 234                 if (status && !error) {
 235                         SecError(status, &error, CFSTR("Error copying shared password"));
 236                 }
 237                 dispatch_async(dst_queue, ^{
 238                         if (completionHandler) {
 239                                 completionHandler(result, error);
 240                         }
 241                         CFReleaseSafe(error);
 242                         CFReleaseSafe(result);
 243                 });
 244         });
 245 #else
 246     SecError(errSecParam, &error, CFSTR("SharedWebCredentials not supported on this platform"));
 247     dispatch_async(dst_queue, ^{
 248         if (completionHandler) {
 249             completionHandler(NULL, error);
 250         }
 251         CFReleaseSafe(error);
 252     });
 253 #endif
 254
 255 }
 256
 257 CFStringRef SecCreateSharedWebCredentialPassword(void)
 258 {
 259
 260     CFStringRef password = NULL;
 261     CFErrorRef error = NULL;
 262     CFMutableDictionaryRef passwordRequirements = NULL;
 263
 264     CFStringRef allowedCharacters = CFSTR("abcdefghkmnopqrstuvwxyzABCDEFGHJKLMNPQRSTUVWXYZ23456789");
 265     CFCharacterSetRef requiredCharactersLower = CFCharacterSetCreateWithCharactersInString(NULL, CFSTR("abcdefghkmnopqrstuvwxyz"));
 266     CFCharacterSetRef requiredCharactersUppder = CFCharacterSetCreateWithCharactersInString(NULL, CFSTR("ABCDEFGHJKLMNPQRSTUVWXYZ"));
 267     CFCharacterSetRef requiredCharactersNumbers = CFCharacterSetCreateWithCharactersInString(NULL, CFSTR("3456789"));
 268
 269     int groupSize = 3;
 270     int groupCount = 4;
 271     int totalLength = (groupSize * groupCount);
 272     CFNumberRef groupSizeRef = CFNumberCreate(NULL, kCFNumberIntType, &groupSize);
 273     CFNumberRef groupCountRef = CFNumberCreate(NULL, kCFNumberIntType, &groupCount);
 274     CFNumberRef totalLengthRef = CFNumberCreate(NULL, kCFNumberIntType, &totalLength);
 275     CFStringRef separator = CFSTR("-");
 276
 277     CFMutableArrayRef requiredCharacterSets = CFArrayCreateMutable(NULL, 0, &kCFTypeArrayCallBacks);
 278     CFArrayAppendValue(requiredCharacterSets, requiredCharactersLower);
 279     CFArrayAppendValue(requiredCharacterSets, requiredCharactersUppder);
 280     CFArrayAppendValue(requiredCharacterSets, requiredCharactersNumbers);
 281
 282     passwordRequirements = CFDictionaryCreateMutable(NULL, 0, NULL, NULL);
 283     CFDictionaryAddValue(passwordRequirements, kSecPasswordAllowedCharactersKey, allowedCharacters);
 284     CFDictionaryAddValue(passwordRequirements, kSecPasswordRequiredCharactersKey, requiredCharacterSets);
 285     CFDictionaryAddValue(passwordRequirements, kSecPasswordGroupSize, groupSizeRef );
 286     CFDictionaryAddValue(passwordRequirements, kSecPasswordNumberOfGroups, groupCountRef);
 287     CFDictionaryAddValue(passwordRequirements, kSecPasswordSeparator, separator);
 288     CFDictionaryAddValue(passwordRequirements, kSecPasswordMaxLengthKey, totalLengthRef);
 289     CFDictionaryAddValue(passwordRequirements, kSecPasswordMinLengthKey, totalLengthRef);
 290     CFDictionaryAddValue(passwordRequirements, kSecPasswordDefaultForType, CFSTR("false"));
 291     CFRelease(requiredCharactersLower);
 292     CFRelease(requiredCharactersUppder);
 293     CFRelease(requiredCharactersNumbers);
 294     CFRelease(groupSizeRef);
 295     CFRelease(groupCountRef);
 296     CFRelease(totalLengthRef);
 297
 298     password = SecPasswordGenerate(kSecPasswordTypeSafari, &error, passwordRequirements);
 299
 300     CFRelease(requiredCharacterSets);
 301     CFRelease(passwordRequirements);
 302     if ((error && error != errSecSuccess) || !password)
 303     {
 304         if (password) CFRelease(password);
 305         secwarning("SecPasswordGenerate failed to generate a password for SecCreateSharedWebCredentialPassword.");
 306         return NULL;
 307     } else {
 308         return password;
 309     }
 310
 311 }