OSX/libsecurity_cms/lib/CMSUtils.cpp

   1 /*
   2  * Copyright (c) 2006,2011,2013-2014 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  * CMSUtils.cpp - common utility routines for libCMS.
  26  */
  27
  28 #include "CMSUtils.h"
  29 #include <stdlib.h>
  30 #include <string.h>
  31 #include <security_asn1/secerr.h>
  32 #include <security_asn1/seccomon.h>
  33 #include <Security/SecBase.h>
  34
  35 /*
  36  * Copy a CSSM_DATA, mallocing the result.
  37  */
  38 void cmsCopyCmsData(
  39         const CSSM_DATA *src,
  40         CSSM_DATA *dst)
  41 {
  42         dst->Data = (uint8 *)malloc(src->Length);
  43         memmove(dst->Data, src->Data, src->Length);
  44         dst->Length = src->Length;
  45 }
  46
  47 /*
  48  * Append a CF type, or the contents of an array, to another array.
  49  * destination array will be created if necessary.
  50  * If srcItemOrArray is not of the type specified in expectedType,
  51  * errSecParam will be returned.
  52  */
  53 OSStatus cmsAppendToArray(
  54         CFTypeRef srcItemOrArray,
  55         CFMutableArrayRef *dstArray,
  56         CFTypeID expectedType)
  57 {
  58         if(srcItemOrArray == NULL) {
  59                 return errSecSuccess;
  60         }
  61         if(*dstArray == NULL) {
  62                 *dstArray = CFArrayCreateMutable(NULL, 0, &kCFTypeArrayCallBacks);
  63         }
  64         CFTypeID inType = CFGetTypeID(srcItemOrArray);
  65         if(inType == CFArrayGetTypeID()) {
  66                 CFArrayRef srcArray = (CFArrayRef)srcItemOrArray;
  67                 CFRange srcRange = {0, CFArrayGetCount(srcArray)};
  68                 CFArrayAppendArray(*dstArray, srcArray, srcRange);
  69         }
  70         else if(inType == expectedType) {
  71                 CFArrayAppendValue(*dstArray, srcItemOrArray);
  72         }
  73         else {
  74                 return errSecParam;
  75         }
  76         return errSecSuccess;
  77 }
  78
  79 /*
  80  * Munge an OSStatus returned from libsecurity_smime, which may well be an ASN.1 private
  81  * error code, to a real OSStatus.
  82  */
  83 OSStatus cmsRtnToOSStatus(
  84         OSStatus smimeRtn,              // from libsecurity_smime
  85         OSStatus defaultRtn)    // use this if we can't map smimeRtn
  86 {
  87         if(smimeRtn == SECFailure) {
  88                 /* This is a SECStatus. Try to get detailed error info. */
  89                 smimeRtn = PORT_GetError();
  90                 if(smimeRtn == 0) {
  91                         /* S/MIME just gave us generic error; no further info available; punt. */
  92                         dprintf("cmsRtnToOSStatus: SECFailure, no status avilable\n");
  93                         return defaultRtn ? defaultRtn : errSecInternalComponent;
  94                 }
  95                 /* else proceed to map smimeRtn to OSStatus */
  96         }
  97         if(!IS_SEC_ERROR(smimeRtn)) {
  98                 /* isn't ASN.1 or S/MIME error; use as is. */
  99                 return smimeRtn;
 100         }
 101
 102         /* Convert SECErrorCodes to OSStatus */
 103         switch(smimeRtn) {
 104                 case SEC_ERROR_BAD_DER:
 105                 case SEC_ERROR_BAD_DATA:
 106                         return errSecUnknownFormat;
 107                 case SEC_ERROR_NO_MEMORY:
 108                         return errSecAllocate;
 109                 case SEC_ERROR_IO:
 110                         return errSecIO;
 111                 case SEC_ERROR_OUTPUT_LEN:
 112                 case SEC_ERROR_INPUT_LEN:
 113                 case SEC_ERROR_INVALID_ARGS:
 114                 case SEC_ERROR_INVALID_ALGORITHM:
 115                 case SEC_ERROR_INVALID_AVA:
 116                 case SEC_ERROR_INVALID_TIME:
 117                         return errSecParam;
 118                 case SEC_ERROR_PKCS7_BAD_SIGNATURE:
 119                 case SEC_ERROR_BAD_SIGNATURE:
 120                         return CSSMERR_CSP_VERIFY_FAILED;
 121                 case SEC_ERROR_EXPIRED_CERTIFICATE:
 122                 case SEC_ERROR_EXPIRED_ISSUER_CERTIFICATE:
 123                         return CSSMERR_TP_CERT_EXPIRED;
 124                 case SEC_ERROR_REVOKED_CERTIFICATE:
 125                         return CSSMERR_TP_CERT_REVOKED;
 126                 case SEC_ERROR_UNKNOWN_ISSUER:
 127                 case SEC_ERROR_UNTRUSTED_ISSUER:
 128                 case SEC_ERROR_UNTRUSTED_CERT:
 129                         return CSSMERR_TP_NOT_TRUSTED;
 130                 case SEC_ERROR_CERT_USAGES_INVALID:
 131                 case SEC_ERROR_INADEQUATE_KEY_USAGE:
 132                         return CSSMERR_CSP_KEY_USAGE_INCORRECT;
 133                 case SEC_INTERNAL_ONLY:
 134                         return errSecInternalComponent;
 135                 case SEC_ERROR_NO_USER_INTERACTION:
 136                         return errSecInteractionNotAllowed;
 137                 case SEC_ERROR_USER_CANCELLED:
 138                         return errSecUserCanceled;
 139                 default:
 140                         dprintf("cmsRtnToOSStatus: smimeRtn 0x%x\n", smimeRtn);
 141                         return defaultRtn ? defaultRtn : errSecInternalComponent;
 142         }
 143 }