OSX/libsecurity_keychain/lib/TrustSettingsUtils.cpp

   1 /*
   2  * Copyright (c) 2005,2011-2014 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
  24 /*
  25  * TrustSettingsUtils.cpp - Utility routines for TrustSettings module
  26  *
  27  */
  28
  29 #include "TrustSettingsUtils.h"
  30 #include <Security/cssmtype.h>
  31 #include <Security/cssmapple.h>
  32 #include <Security/oidscert.h>
  33 #include <assert.h>
  34 #include <sys/param.h>
  35 #include <sys/stat.h>
  36 #include <sys/fcntl.h>
  37
  38 /*
  39  * Preferred location for user root store is ~/Library/Keychain/UserRootCerts.keychain.
  40  * If we're creating a root store and there is a file there we iterate thru
  41  * ~/Library/Keychains/UserRootCerts_N.keychain, 0 <= N <= 10.
  42  */
  43 #define kSecUserRootStoreBase                   "~/Library/Keychains/UserRootCerts"
  44 #define kSecUserRootStoreExtension              ".keychain"
  45
  46 namespace Security {
  47
  48 namespace KeychainCore {
  49
  50 /*
  51  * Read entire file.
  52  */
  53 int tsReadFile(
  54         const char              *fileName,
  55         Allocator               &alloc,
  56         CSSM_DATA               &fileData)              // mallocd via alloc and RETURNED
  57 {
  58         int rtn;
  59         int fd;
  60         struct stat     sb;
  61         unsigned size;
  62
  63         fileData.Data = NULL;
  64         fileData.Length = 0;
  65         fd = open(fileName, O_RDONLY, 0);
  66         if(fd < 0) {
  67                 return errno;
  68         }
  69         rtn = fstat(fd, &sb);
  70         if(rtn) {
  71                 goto errOut;
  72         }
  73         size = (unsigned)sb.st_size;
  74         fileData.Data = (uint8 *)alloc.malloc(size);
  75         if(fileData.Data == NULL) {
  76                 rtn = ENOMEM;
  77                 goto errOut;
  78         }
  79         rtn = (int)lseek(fd, 0, SEEK_SET);
  80         if(rtn < 0) {
  81                 goto errOut;
  82         }
  83         rtn = (int)read(fd, fileData.Data, (size_t)size);
  84         if(rtn != (int)size) {
  85                 rtn = EIO;
  86         }
  87         else {
  88                 rtn = 0;
  89                 fileData.Length = size;
  90         }
  91 errOut:
  92         close(fd);
  93         return rtn;
  94 }
  95
  96 } /* end namespace KeychainCore */
  97
  98 } /* end namespace Security */