libsecurity_keychain/lib/TrustSettingsUtils.cpp

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