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 <CoreServices/../Frameworks/CarbonCore.framework/Headers/MacErrors.h>
  33 #include <security_asn1/secerr.h>
  34 #include <security_asn1/seccomon.h>
  35 #include <Security/SecBase.h>
  36
  37 /*
  38  * Copy a CSSM_DATA, mallocing the result.
  39  */
  40 void cmsCopyCmsData(
  41         const CSSM_DATA *src,
  42         CSSM_DATA *dst)
  43 {
  44         dst->Data = (uint8 *)malloc(src->Length);
  45         memmove(dst->Data, src->Data, src->Length);
  46         dst->Length = src->Length;
  47 }
  48
  49 /*
  50  * Append a CF type, or the contents of an array, to another array.
  51  * destination array will be created if necessary.
  52  * If srcItemOrArray is not of the type specified in expectedType,
  53  * paramErr will be returned.
  54  */
  55 OSStatus cmsAppendToArray(
  56         CFTypeRef srcItemOrArray,
  57         CFMutableArrayRef *dstArray,
  58         CFTypeID expectedType)
  59 {
  60         if(srcItemOrArray == NULL) {
  61                 return noErr;
  62         }
  63         if(*dstArray == NULL) {
  64                 *dstArray = CFArrayCreateMutable(NULL, 0, &kCFTypeArrayCallBacks);
  65         }
  66         CFTypeID inType = CFGetTypeID(srcItemOrArray);
  67         if(inType == CFArrayGetTypeID()) {
  68                 CFArrayRef srcArray = (CFArrayRef)srcItemOrArray;
  69                 CFRange srcRange = {0, CFArrayGetCount(srcArray)};
  70                 CFArrayAppendArray(*dstArray, srcArray, srcRange);
  71         }
  72         else if(inType == expectedType) {
  73                 CFArrayAppendValue(*dstArray, srcItemOrArray);
  74         }
  75         else {
  76                 return paramErr;
  77         }
  78         return noErr;
  79 }
  80
  81 /*
  82  * Munge an OSStatus returned from libsecurity_smime, which may well be an ASN.1 private
  83  * error code, to a real OSStatus.
  84  */
  85 OSStatus cmsRtnToOSStatus(
  86         OSStatus smimeRtn,              // from libsecurity_smime
  87         OSStatus defaultRtn)    // use this if we can't map smimeRtn
  88 {
  89         if(smimeRtn == SECFailure) {
  90                 /* This is a SECStatus. Try to get detailed error info. */
  91                 smimeRtn = PORT_GetError();
  92                 if(smimeRtn == 0) {
  93                         /* S/MIME just gave us generic error; no further info available; punt. */
  94                         dprintf("cmsRtnToOSStatus: SECFailure, no status avilable\n");
  95                         return defaultRtn ? defaultRtn : internalComponentErr;
  96                 }
  97                 /* else proceed to map smimeRtn to OSStatus */
  98         }
  99         if(!IS_SEC_ERROR(smimeRtn)) {
 100                 /* isn't ASN.1 or S/MIME error; use as is. */
 101                 return smimeRtn;
 102         }
 103
 104         /* Convert SECErrorCodes to OSStatus */
 105         switch(smimeRtn) {
 106                 case SEC_ERROR_BAD_DER:
 107                 case SEC_ERROR_BAD_DATA:
 108                         return errSecUnknownFormat;
 109                 case SEC_ERROR_NO_MEMORY:
 110                         return memFullErr;
 111                 case SEC_ERROR_IO:
 112                         return ioErr;
 113                 case SEC_ERROR_OUTPUT_LEN:
 114                 case SEC_ERROR_INPUT_LEN:
 115                 case SEC_ERROR_INVALID_ARGS:
 116                 case SEC_ERROR_INVALID_ALGORITHM:
 117                 case SEC_ERROR_INVALID_AVA:
 118                 case SEC_ERROR_INVALID_TIME:
 119                         return paramErr;
 120                 case SEC_ERROR_PKCS7_BAD_SIGNATURE:
 121                 case SEC_ERROR_BAD_SIGNATURE:
 122                         return CSSMERR_CSP_VERIFY_FAILED;
 123                 case SEC_ERROR_EXPIRED_CERTIFICATE:
 124                 case SEC_ERROR_EXPIRED_ISSUER_CERTIFICATE:
 125                         return CSSMERR_TP_CERT_EXPIRED;
 126                 case SEC_ERROR_REVOKED_CERTIFICATE:
 127                         return CSSMERR_TP_CERT_REVOKED;
 128                 case SEC_ERROR_UNKNOWN_ISSUER:
 129                 case SEC_ERROR_UNTRUSTED_ISSUER:
 130                 case SEC_ERROR_UNTRUSTED_CERT:
 131                         return CSSMERR_TP_NOT_TRUSTED;
 132                 case SEC_ERROR_CERT_USAGES_INVALID:
 133                 case SEC_ERROR_INADEQUATE_KEY_USAGE:
 134                         return CSSMERR_CSP_KEY_USAGE_INCORRECT;
 135                 case SEC_INTERNAL_ONLY:
 136                         return internalComponentErr;
 137                 case SEC_ERROR_NO_USER_INTERACTION:
 138                         return errSecInteractionNotAllowed;
 139                 case SEC_ERROR_USER_CANCELLED:
 140                         return userCanceledErr;
 141                 default:
 142                         dprintf("cmsRtnToOSStatus: smimeRtn 0x%x\n", smimeRtn);
 143                         return defaultRtn ? defaultRtn : internalComponentErr;
 144         }
 145 }