libsecurity_cms/lib/CMSUtils.cpp

   1 /*
   2  * Copyright (c) 2006 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  * CMSUtils.cpp - common utility routines for libCMS.
  26  * Created 1/12/06 by Doug Mitchell.
  27  */
  28
  29 #include "CMSUtils.h"
  30 #include <stdlib.h>
  31 #include <string.h>
  32 #include <security_asn1/secerr.h>
  33 #include <security_asn1/seccomon.h>
  34 #include <Security/SecBase.h>
  35
  36 /*
  37  * Copy a CSSM_DATA, mallocing the result.
  38  */
  39 void cmsCopyCmsData(
  40         const CSSM_DATA *src,
  41         CSSM_DATA *dst)
  42 {
  43         dst->Data = (uint8 *)malloc(src->Length);
  44         memmove(dst->Data, src->Data, src->Length);
  45         dst->Length = src->Length;
  46 }
  47
  48 /*
  49  * Append a CF type, or the contents of an array, to another array.
  50  * destination array will be created if necessary.
  51  * If srcItemOrArray is not of the type specified in expectedType,
  52  * errSecParam will be returned.
  53  */
  54 OSStatus cmsAppendToArray(
  55         CFTypeRef srcItemOrArray,
  56         CFMutableArrayRef *dstArray,
  57         CFTypeID expectedType)
  58 {
  59         if(srcItemOrArray == NULL) {
  60                 return errSecSuccess;
  61         }
  62         if(*dstArray == NULL) {
  63                 *dstArray = CFArrayCreateMutable(NULL, 0, &kCFTypeArrayCallBacks);
  64         }
  65         CFTypeID inType = CFGetTypeID(srcItemOrArray);
  66         if(inType == CFArrayGetTypeID()) {
  67                 CFArrayRef srcArray = (CFArrayRef)srcItemOrArray;
  68                 CFRange srcRange = {0, CFArrayGetCount(srcArray)};
  69                 CFArrayAppendArray(*dstArray, srcArray, srcRange);
  70         }
  71         else if(inType == expectedType) {
  72                 CFArrayAppendValue(*dstArray, srcItemOrArray);
  73         }
  74         else {
  75                 return errSecParam;
  76         }
  77         return errSecSuccess;
  78 }
  79
  80 /*
  81  * Munge an OSStatus returned from libsecurity_smime, which may well be an ASN.1 private
  82  * error code, to a real OSStatus.
  83  */
  84 OSStatus cmsRtnToOSStatus(
  85         OSStatus smimeRtn,              // from libsecurity_smime
  86         OSStatus defaultRtn)    // use this if we can't map smimeRtn
  87 {
  88         if(smimeRtn == SECFailure) {
  89                 /* This is a SECStatus. Try to get detailed error info. */
  90                 smimeRtn = PORT_GetError();
  91                 if(smimeRtn == 0) {
  92                         /* S/MIME just gave us generic error; no further info available; punt. */
  93                         dprintf("cmsRtnToOSStatus: SECFailure, no status avilable\n");
  94                         return defaultRtn ? defaultRtn : errSecInternalComponent;
  95                 }
  96                 /* else proceed to map smimeRtn to OSStatus */
  97         }
  98         if(!IS_SEC_ERROR(smimeRtn)) {
  99                 /* isn't ASN.1 or S/MIME error; use as is. */
 100                 return smimeRtn;
 101         }
 102
 103         /* Convert SECErrorCodes to OSStatus */
 104         switch(smimeRtn) {
 105                 case SEC_ERROR_BAD_DER:
 106                 case SEC_ERROR_BAD_DATA:
 107                         return errSecUnknownFormat;
 108                 case SEC_ERROR_NO_MEMORY:
 109                         return errSecAllocate;
 110                 case SEC_ERROR_IO:
 111                         return errSecIO;
 112                 case SEC_ERROR_OUTPUT_LEN:
 113                 case SEC_ERROR_INPUT_LEN:
 114                 case SEC_ERROR_INVALID_ARGS:
 115                 case SEC_ERROR_INVALID_ALGORITHM:
 116                 case SEC_ERROR_INVALID_AVA:
 117                 case SEC_ERROR_INVALID_TIME:
 118                         return errSecParam;
 119                 case SEC_ERROR_PKCS7_BAD_SIGNATURE:
 120                 case SEC_ERROR_BAD_SIGNATURE:
 121                         return CSSMERR_CSP_VERIFY_FAILED;
 122                 case SEC_ERROR_EXPIRED_CERTIFICATE:
 123                 case SEC_ERROR_EXPIRED_ISSUER_CERTIFICATE:
 124                         return CSSMERR_TP_CERT_EXPIRED;
 125                 case SEC_ERROR_REVOKED_CERTIFICATE:
 126                         return CSSMERR_TP_CERT_REVOKED;
 127                 case SEC_ERROR_UNKNOWN_ISSUER:
 128                 case SEC_ERROR_UNTRUSTED_ISSUER:
 129                 case SEC_ERROR_UNTRUSTED_CERT:
 130                         return CSSMERR_TP_NOT_TRUSTED;
 131                 case SEC_ERROR_CERT_USAGES_INVALID:
 132                 case SEC_ERROR_INADEQUATE_KEY_USAGE:
 133                         return CSSMERR_CSP_KEY_USAGE_INCORRECT;
 134                 case SEC_INTERNAL_ONLY:
 135                         return errSecInternalComponent;
 136                 case SEC_ERROR_NO_USER_INTERACTION:
 137                         return errSecInteractionNotAllowed;
 138                 case SEC_ERROR_USER_CANCELLED:
 139                         return errSecUserCanceled;
 140                 default:
 141                         dprintf("cmsRtnToOSStatus: smimeRtn 0x%x\n", smimeRtn);
 142                         return defaultRtn ? defaultRtn : errSecInternalComponent;
 143         }
 144 }