OSX/libsecurity_smime/lib/cmssiginfo.c

   1 /*
   2  * The contents of this file are subject to the Mozilla Public
   3  * License Version 1.1 (the "License"); you may not use this file
   4  * except in compliance with the License. You may obtain a copy of
   5  * the License at http://www.mozilla.org/MPL/
   6  *
   7  * Software distributed under the License is distributed on an "AS
   8  * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
   9  * implied. See the License for the specific language governing
  10  * rights and limitations under the License.
  11  *
  12  * The Original Code is the Netscape security libraries.
  13  *
  14  * The Initial Developer of the Original Code is Netscape
  15  * Communications Corporation.  Portions created by Netscape are
  16  * Copyright (C) 1994-2000 Netscape Communications Corporation.  All
  17  * Rights Reserved.
  18  *
  19  * Contributor(s):
  20  *
  21  * Alternatively, the contents of this file may be used under the
  22  * terms of the GNU General Public License Version 2 or later (the
  23  * "GPL"), in which case the provisions of the GPL are applicable
  24  * instead of those above.  If you wish to allow use of your
  25  * version of this file only under the terms of the GPL and not to
  26  * allow others to use your version of this file under the MPL,
  27  * indicate your decision by deleting the provisions above and
  28  * replace them with the notice and other provisions required by
  29  * the GPL.  If you do not delete the provisions above, a recipient
  30  * may use your version of this file under either the MPL or the
  31  * GPL.
  32  */
  33
  34 /*
  35  * CMS signerInfo methods.
  36  */
  37
  38 #include <Security/SecCmsSignerInfo.h>
  39 #include "SecSMIMEPriv.h"
  40
  41 #include "cmslocal.h"
  42
  43 #include "cert.h"
  44 #include "secitem.h"
  45 #include "secoid.h"
  46 #include "cryptohi.h"
  47
  48 #include <security_asn1/secasn1.h>
  49 #include <security_asn1/secerr.h>
  50 #include <Security/SecKeychain.h>
  51 #include <Security/SecIdentity.h>
  52 #include <Security/SecCertificatePriv.h>
  53 #include <Security/SecKeyPriv.h>
  54 #include <CoreFoundation/CFTimeZone.h>
  55 #include <utilities/SecCFWrappers.h>
  56 #include <utilities/debugging.h>
  57 #include <AssertMacros.h>
  58 #include <CoreServices/../Frameworks/CarbonCore.framework/Headers/MacErrors.h>
  59 #include <Security/SecPolicyPriv.h>
  60 #include <Security/SecItem.h>
  61 #include <libDER/asn1Types.h>
  62
  63 #include "tsaSupport.h"
  64 #include "tsaSupportPriv.h"
  65
  66 #include <syslog.h>
  67
  68 #define HIDIGIT(v) (((v) / 10) + '0')
  69 #define LODIGIT(v) (((v) % 10) + '0')
  70
  71 #define ISDIGIT(dig) (((dig) >= '0') && ((dig) <= '9'))
  72 #define CAPTURE(var,p,label)                              \
  73 {                                                         \
  74     if (!ISDIGIT((p)[0]) || !ISDIGIT((p)[1])) goto label; \
  75     (var) = ((p)[0] - '0') * 10 + ((p)[1] - '0');         \
  76 }
  77
  78 #ifndef NDEBUG
  79 #define SIGINFO_DEBUG   1
  80 #endif
  81
  82 #if     SIGINFO_DEBUG
  83 #define dprintf(args...)      fprintf(stderr, args)
  84 #else
  85 #define dprintf(args...)
  86 #endif
  87
  88 #if RELEASECOUNTDEBUG
  89 #define dprintfRC(args...)    dprintf(args)
  90 #else
  91 #define dprintfRC(args...)
  92 #endif
  93
  94 static OSStatus
  95 DER_UTCTimeToCFDate(const CSSM_DATA_PTR utcTime, CFAbsoluteTime *date)
  96 {
  97     CFErrorRef error = NULL;
  98     /* <rdar://problem/55316705> CMS attributes don't correctly encode/decode times (always use UTCTime) */
  99     CFAbsoluteTime result = SecAbsoluteTimeFromDateContentWithError(ASN1_UTC_TIME, utcTime->Data, utcTime->Length, &error);
 100     if (error) {
 101         CFReleaseNull(error);
 102         return SECFailure;
 103     }
 104
 105     if (date) {
 106         *date = result;
 107     }
 108     return SECSuccess;
 109 }
 110
 111 static OSStatus
 112 DER_CFDateToUTCTime(CFAbsoluteTime date, CSSM_DATA_PTR utcTime)
 113 {
 114     unsigned char *d;
 115
 116     utcTime->Length = 13;
 117     utcTime->Data = d = PORT_Alloc(13);
 118     if (!utcTime->Data) {
 119         return SECFailure;
 120     }
 121
 122     __block int year = 0, month = 0, day = 0, hour = 0, minute = 0, second = 0;
 123     __block bool result;
 124     SecCFCalendarDoWithZuluCalendar(^(CFCalendarRef zuluCalendar) {
 125         result = CFCalendarDecomposeAbsoluteTime(zuluCalendar, date, "yMdHms", &year, &month, &day, &hour, &minute, &second);
 126     });
 127     if (!result) {
 128         return SECFailure;
 129     }
 130
 131     /* UTC time does not handle the years before 1950 or after 2049 */
 132     /* <rdar://problem/55316705> CMS attributes don't correctly encode/decode times (always use UTCTime) */
 133     if (year < 1950 || year > 2049) {
 134         return SECFailure;
 135     }
 136
 137     /* remove the century since it's added to the year by the
 138        CFAbsoluteTimeGetGregorianDate routine, but is not needed for UTC time */
 139     year %= 100;
 140
 141     d[0] = HIDIGIT(year);
 142     d[1] = LODIGIT(year);
 143     d[2] = HIDIGIT(month);
 144     d[3] = LODIGIT(month);
 145     d[4] = HIDIGIT(day);
 146     d[5] = LODIGIT(day);
 147     d[6] = HIDIGIT(hour);
 148     d[7] = LODIGIT(hour);
 149     d[8] = HIDIGIT(minute);
 150     d[9] = LODIGIT(minute);
 151     d[10] = HIDIGIT(second);
 152     d[11] = LODIGIT(second);
 153     d[12] = 'Z';
 154     return SECSuccess;
 155 }
 156
 157 /* =============================================================================
 158  * SIGNERINFO
 159  */
 160 SecCmsSignerInfoRef
 161 nss_cmssignerinfo_create(SecCmsMessageRef cmsg, SecCmsSignerIDSelector type, SecCertificateRef cert, CSSM_DATA_PTR subjKeyID, SecPublicKeyRef pubKey, SecPrivateKeyRef signingKey, SECOidTag digestalgtag);
 162
 163 SecCmsSignerInfoRef
 164 SecCmsSignerInfoCreateWithSubjKeyID(SecCmsMessageRef cmsg, CSSM_DATA_PTR subjKeyID, SecPublicKeyRef pubKey, SecPrivateKeyRef signingKey, SECOidTag digestalgtag)
 165 {
 166     return nss_cmssignerinfo_create(cmsg, SecCmsSignerIDSubjectKeyID, NULL, subjKeyID, pubKey, signingKey, digestalgtag);
 167 }
 168
 169 SecCmsSignerInfoRef
 170 SecCmsSignerInfoCreate(SecCmsMessageRef cmsg, SecIdentityRef identity, SECOidTag digestalgtag)
 171 {
 172     SecCmsSignerInfoRef signerInfo = NULL;
 173     SecCertificateRef cert = NULL;
 174     SecPrivateKeyRef signingKey = NULL;
 175     CFDictionaryRef keyAttrs = NULL;
 176
 177     if (SecIdentityCopyCertificate(identity, &cert))
 178         goto loser;
 179     if (SecIdentityCopyPrivateKey(identity, &signingKey))
 180         goto loser;
 181
 182     /* In some situations, the "Private Key" in the identity is actually a public key. */
 183     keyAttrs = SecKeyCopyAttributes(signingKey);
 184     if (!keyAttrs)
 185         goto loser;
 186     CFTypeRef class = CFDictionaryGetValue(keyAttrs, kSecAttrKeyClass);
 187     if (!class || (CFGetTypeID(class) != CFStringGetTypeID()) || !CFEqual(class, kSecAttrKeyClassPrivate))
 188         goto loser;
 189
 190
 191     signerInfo = nss_cmssignerinfo_create(cmsg, SecCmsSignerIDIssuerSN, cert, NULL, NULL, signingKey, digestalgtag);
 192
 193 loser:
 194     if (cert)
 195         CFRelease(cert);
 196     if (signingKey)
 197         CFRelease(signingKey);
 198     if (keyAttrs)
 199         CFRelease(keyAttrs);
 200
 201     return signerInfo;
 202 }
 203
 204 SecCmsSignerInfoRef
 205 nss_cmssignerinfo_create(SecCmsMessageRef cmsg, SecCmsSignerIDSelector type, SecCertificateRef cert, CSSM_DATA_PTR subjKeyID, SecPublicKeyRef pubKey, SecPrivateKeyRef signingKey, SECOidTag digestalgtag)
 206 {
 207     void *mark;
 208     SecCmsSignerInfoRef signerinfo;
 209     int version;
 210     PLArenaPool *poolp;
 211
 212     poolp = cmsg->poolp;
 213
 214     mark = PORT_ArenaMark(poolp);
 215
 216     signerinfo = (SecCmsSignerInfoRef)PORT_ArenaZAlloc(poolp, sizeof(SecCmsSignerInfo));
 217     if (signerinfo == NULL) {
 218         PORT_ArenaRelease(poolp, mark);
 219         return NULL;
 220     }
 221
 222
 223     signerinfo->cmsg = cmsg;
 224
 225     switch(type) {
 226     case SecCmsSignerIDIssuerSN:
 227         signerinfo->signerIdentifier.identifierType = SecCmsSignerIDIssuerSN;
 228         if ((signerinfo->cert = CERT_DupCertificate(cert)) == NULL)
 229             goto loser;
 230         if ((signerinfo->signerIdentifier.id.issuerAndSN = CERT_GetCertIssuerAndSN(poolp, cert)) == NULL)
 231             goto loser;
 232         dprintfRC("nss_cmssignerinfo_create: SecCmsSignerIDIssuerSN: cert.rc %d\n",
 233             (int)CFGetRetainCount(signerinfo->cert));
 234         break;
 235     case SecCmsSignerIDSubjectKeyID:
 236         signerinfo->signerIdentifier.identifierType = SecCmsSignerIDSubjectKeyID;
 237         PORT_Assert(subjKeyID);
 238         if (!subjKeyID)
 239             goto loser;
 240         signerinfo->signerIdentifier.id.subjectKeyID = PORT_ArenaNew(poolp, CSSM_DATA);
 241         if (SECITEM_CopyItem(poolp, signerinfo->signerIdentifier.id.subjectKeyID,
 242                              subjKeyID)) {
 243             goto loser;
 244         }
 245         signerinfo->pubKey = SECKEY_CopyPublicKey(pubKey);
 246         if (!signerinfo->pubKey)
 247             goto loser;
 248         break;
 249     default:
 250         goto loser;
 251     }
 252
 253     if (!signingKey)
 254         goto loser;
 255
 256     signerinfo->signingKey = SECKEY_CopyPrivateKey(signingKey);
 257     if (!signerinfo->signingKey)
 258         goto loser;
 259
 260     /* set version right now */
 261     version = SEC_CMS_SIGNER_INFO_VERSION_ISSUERSN;
 262     /* RFC2630 5.3 "version is the syntax version number. If the .... " */
 263     if (signerinfo->signerIdentifier.identifierType == SecCmsSignerIDSubjectKeyID)
 264         version = SEC_CMS_SIGNER_INFO_VERSION_SUBJKEY;
 265     (void)SEC_ASN1EncodeInteger(poolp, &(signerinfo->version), (long)version);
 266
 267     if (SECOID_SetAlgorithmID(poolp, &signerinfo->digestAlg, digestalgtag, NULL) != SECSuccess)
 268         goto loser;
 269
 270     PORT_ArenaUnmark(poolp, mark);
 271     return signerinfo;
 272
 273 loser:
 274     PORT_ArenaRelease(poolp, mark);
 275     return NULL;
 276 }
 277
 278 /*
 279  * SecCmsSignerInfoDestroy - destroy a SignerInfo data structure
 280  */
 281 void
 282 SecCmsSignerInfoDestroy(SecCmsSignerInfoRef si)
 283 {
 284     if (si->cert != NULL) {
 285         dprintfRC("SecCmsSignerInfoDestroy top: certp %p cert.rc %d\n",
 286             si->cert, (int)CFGetRetainCount(si->cert));
 287         CERT_DestroyCertificate(si->cert);
 288     }
 289     if (si->certList != NULL) {
 290         dprintfRC("SecCmsSignerInfoDestroy top: certList.rc %d\n",
 291             (int)CFGetRetainCount(si->certList));
 292         CFRelease(si->certList);
 293     }
 294     if (si->timestampCertList != NULL) {
 295         dprintfRC("SecCmsSignerInfoDestroy top: timestampCertList.rc %d\n",
 296             (int)CFGetRetainCount(si->timestampCertList));
 297         CFRelease(si->timestampCertList);
 298     }
 299     if (si->timestampCert != NULL) {
 300         dprintfRC("SecCmsSignerInfoDestroy top: timestampCert.rc %d\n",
 301                   (int)CFGetRetainCount(si->timestampCert));
 302         CFRelease(si->timestampCert);
 303     }
 304     if (si->hashAgilityAttrValue != NULL) {
 305         dprintfRC("SecCmsSignerInfoDestroy top: hashAgilityAttrValue.rc %d\n",
 306                   (int)CFGetRetainCount(si->hashAgilityAttrValue));
 307         CFRelease(si->hashAgilityAttrValue);
 308     }
 309     if (si->hashAgilityV2AttrValues != NULL) {
 310         dprintfRC("SecCmsSignerInfoDestroy top: hashAgilityV2AttrValues.rc %d\n",
 311                   (int)CFGetRetainCount(si->hashAgilityV2AttrValues));
 312         CFRelease(si->hashAgilityV2AttrValues);
 313     }
 314     /* XXX storage ??? */
 315 }
 316
 317 /*
 318  * SecCmsSignerInfoSign - sign something
 319  *
 320  */
 321 OSStatus
 322 SecCmsSignerInfoSign(SecCmsSignerInfoRef signerinfo, CSSM_DATA_PTR digest, CSSM_DATA_PTR contentType)
 323 {
 324     SecCertificateRef cert;
 325     SecPrivateKeyRef privkey = NULL;
 326     SECOidTag digestalgtag;
 327     SECOidTag pubkAlgTag;
 328     CSSM_DATA signature = { 0 };
 329     OSStatus rv;
 330     PLArenaPool *poolp, *tmppoolp = NULL;
 331     const SECAlgorithmID *algID;
 332     SECAlgorithmID freeAlgID;
 333     //CERTSubjectPublicKeyInfo *spki;
 334
 335     PORT_Assert (digest != NULL);
 336
 337     poolp = signerinfo->cmsg->poolp;
 338
 339     switch (signerinfo->signerIdentifier.identifierType) {
 340     case SecCmsSignerIDIssuerSN:
 341         privkey = signerinfo->signingKey;
 342         signerinfo->signingKey = NULL;
 343         cert = signerinfo->cert;
 344         if (SecCertificateGetAlgorithmID(cert,&algID)) {
 345             PORT_SetError(SEC_ERROR_INVALID_ALGORITHM);
 346             goto loser;
 347         }
 348         break;
 349     case SecCmsSignerIDSubjectKeyID:
 350         privkey = signerinfo->signingKey;
 351         signerinfo->signingKey = NULL;
 352 #if 0
 353         spki = SECKEY_CreateSubjectPublicKeyInfo(signerinfo->pubKey);
 354         SECKEY_DestroyPublicKey(signerinfo->pubKey);
 355         signerinfo->pubKey = NULL;
 356         SECOID_CopyAlgorithmID(NULL, &freeAlgID, &spki->algorithm);
 357         SECKEY_DestroySubjectPublicKeyInfo(spki);
 358         algID = &freeAlgID;
 359 #else
 360
 361 #if TARGET_OS_OSX
 362         if (SecKeyGetAlgorithmID(signerinfo->pubKey,&algID)) {
 363 #else
 364         /* TBD: Unify this code. Currently, iOS has an incompatible
 365          * SecKeyGetAlgorithmID implementation.  */
 366         if (true) {
 367 #endif
 368             PORT_SetError(SEC_ERROR_INVALID_ALGORITHM);
 369             goto loser;
 370         }
 371         CFRelease(signerinfo->pubKey);
 372         signerinfo->pubKey = NULL;
 373 #endif
 374         break;
 375     default:
 376         PORT_SetError(SEC_ERROR_UNSUPPORTED_MESSAGE_TYPE);
 377         goto loser;
 378     }
 379     digestalgtag = SecCmsSignerInfoGetDigestAlgTag(signerinfo);
 380     /*
 381      * XXX I think there should be a cert-level interface for this,
 382      * so that I do not have to know about subjectPublicKeyInfo...
 383      */
 384     pubkAlgTag = SECOID_GetAlgorithmTag(algID);
 385     if (signerinfo->signerIdentifier.identifierType == SecCmsSignerIDSubjectKeyID) {
 386       SECOID_DestroyAlgorithmID(&freeAlgID, PR_FALSE);
 387     }
 388
 389 #if 0
 390     // @@@ Not yet
 391     /* Fortezza MISSI have weird signature formats.
 392      * Map them to standard DSA formats
 393      */
 394     pubkAlgTag = PK11_FortezzaMapSig(pubkAlgTag);
 395 #endif
 396
 397     if (signerinfo->authAttr != NULL) {
 398         CSSM_DATA encoded_attrs;
 399
 400         /* find and fill in the message digest attribute. */
 401         rv = SecCmsAttributeArraySetAttr(poolp, &(signerinfo->authAttr),
 402                                SEC_OID_PKCS9_MESSAGE_DIGEST, digest, PR_FALSE);
 403         if (rv != SECSuccess)
 404             goto loser;
 405
 406         if (contentType != NULL) {
 407             /* if the caller wants us to, find and fill in the content type attribute. */
 408             rv = SecCmsAttributeArraySetAttr(poolp, &(signerinfo->authAttr),
 409                             SEC_OID_PKCS9_CONTENT_TYPE, contentType, PR_FALSE);
 410             if (rv != SECSuccess)
 411                 goto loser;
 412         }
 413
 414         if ((tmppoolp = PORT_NewArena (1024)) == NULL) {
 415             PORT_SetError(SEC_ERROR_NO_MEMORY);
 416             goto loser;
 417         }
 418
 419         /*
 420          * Before encoding, reorder the attributes so that when they
 421          * are encoded, they will be conforming DER, which is required
 422          * to have a specific order and that is what must be used for
 423          * the hash/signature.  We do this here, rather than building
 424          * it into EncodeAttributes, because we do not want to do
 425          * such reordering on incoming messages (which also uses
 426          * EncodeAttributes) or our old signatures (and other "broken"
 427          * implementations) will not verify.  So, we want to guarantee
 428          * that we send out good DER encodings of attributes, but not
 429          * to expect to receive them.
 430          */
 431         if (SecCmsAttributeArrayReorder(signerinfo->authAttr) != SECSuccess)
 432             goto loser;
 433
 434         encoded_attrs.Data = NULL;
 435         encoded_attrs.Length = 0;
 436         if (SecCmsAttributeArrayEncode(tmppoolp, &(signerinfo->authAttr),
 437                         &encoded_attrs) == NULL)
 438             goto loser;
 439
 440         rv = SEC_SignData(&signature, encoded_attrs.Data, (int)encoded_attrs.Length,
 441                           privkey, digestalgtag, pubkAlgTag);
 442         PORT_FreeArena(tmppoolp, PR_FALSE); /* awkward memory management :-( */
 443         tmppoolp = 0;
 444     } else {
 445         rv = SGN_Digest(privkey, digestalgtag, pubkAlgTag, &signature, digest);
 446     }
 447     SECKEY_DestroyPrivateKey(privkey);
 448     privkey = NULL;
 449
 450     if (rv != SECSuccess)
 451         goto loser;
 452
 453     if (SECITEM_CopyItem(poolp, &(signerinfo->encDigest), &signature)
 454           != SECSuccess)
 455         goto loser;
 456
 457     SECITEM_FreeItem(&signature, PR_FALSE);
 458
 459     SECOidTag sigAlgTag = SecCmsUtilMakeSignatureAlgorithm(digestalgtag, pubkAlgTag);
 460     if(pubkAlgTag == SEC_OID_EC_PUBLIC_KEY && SecCmsMsEcdsaCompatMode()) {
 461         /*
 462          * RFC 3278 section section 2.1.1 states that the signatureAlgorithm
 463          * field contains the full ecdsa-with-SHA1 OID, not plain old ecPublicKey
 464          * as would appear in other forms of signed datas. However Microsoft doesn't
 465          * do this, it puts ecPublicKey there, and if we put ecdsa-with-SHA1 there,
 466          * MS can't verify - presumably because it takes the digest of the digest
 467          * before feeding it to ECDSA.
 468          * We handle this with a preference; default if it's not there is
 469          * "Microsoft compatibility mode".
 470          */
 471         sigAlgTag = SEC_OID_EC_PUBLIC_KEY;
 472     }
 473
 474     if (SECOID_SetAlgorithmID(poolp, &(signerinfo->digestEncAlg), sigAlgTag,
 475                               NULL) != SECSuccess)
 476         goto loser;
 477
 478     return SECSuccess;
 479
 480 loser:
 481     if (signature.Length != 0)
 482         SECITEM_FreeItem (&signature, PR_FALSE);
 483     if (privkey)
 484         SECKEY_DestroyPrivateKey(privkey);
 485     if (tmppoolp)
 486         PORT_FreeArena(tmppoolp, PR_FALSE);
 487     return SECFailure;
 488 }
 489
 490 OSStatus
 491 SecCmsSignerInfoVerifyCertificate(SecCmsSignerInfoRef signerinfo, SecKeychainRef keychainOrArray,
 492                                   CFTypeRef policies, SecTrustRef *trustRef)
 493 {
 494     SecCertificateRef cert;
 495     CFAbsoluteTime stime;
 496     OSStatus rv;
 497     CSSM_DATA_PTR *otherCerts;
 498
 499     if ((cert = SecCmsSignerInfoGetSigningCertificate(signerinfo, keychainOrArray)) == NULL) {
 500         dprintf("SecCmsSignerInfoVerifyCertificate: no signing cert\n");
 501         signerinfo->verificationStatus = SecCmsVSSigningCertNotFound;
 502         return SECFailure;
 503     }
 504
 505     /*
 506      * Get and convert the signing time; if available, it will be used
 507      * both on the cert verification and for importing the sender
 508      * email profile.
 509      */
 510     CFTypeRef timeStampPolicies=SecPolicyCreateAppleTimeStampingAndRevocationPolicies(policies);
 511     if (SecCmsSignerInfoGetTimestampTimeWithPolicy(signerinfo, timeStampPolicies, &stime) != SECSuccess)
 512         if (SecCmsSignerInfoGetSigningTime(signerinfo, &stime) != SECSuccess)
 513             stime = CFAbsoluteTimeGetCurrent();
 514     CFReleaseSafe(timeStampPolicies);
 515
 516     rv = SecCmsSignedDataRawCerts(signerinfo->sigd, &otherCerts);
 517     if(rv) {
 518         return rv;
 519     }
 520     rv = CERT_VerifyCert(keychainOrArray, cert, otherCerts, policies, stime, trustRef);
 521     dprintfRC("SecCmsSignerInfoVerifyCertificate after vfy: certp %p cert.rc %d\n",
 522             cert, (int)CFGetRetainCount(cert));
 523     if (rv || !trustRef)
 524     {
 525         if (PORT_GetError() == SEC_ERROR_UNTRUSTED_CERT)
 526         {
 527             /* Signature or digest level verificationStatus errors should supercede certificate level errors, so only change the verificationStatus if the status was GoodSignature. */
 528             if (signerinfo->verificationStatus == SecCmsVSGoodSignature)
 529                 signerinfo->verificationStatus = SecCmsVSSigningCertNotTrusted;
 530         }
 531     }
 532     /* FIXME isn't this leaking the cert? */
 533     dprintf("SecCmsSignerInfoVerifyCertificate: CertVerify rtn %d\n", (int)rv);
 534     return rv;
 535 }
 536
 537 static void debugShowSigningCertificate(SecCmsSignerInfoRef signerinfo)
 538 {
 539 #if SIGINFO_DEBUG
 540     CFStringRef cn = SecCmsSignerInfoGetSignerCommonName(signerinfo);
 541     if (cn)
 542     {
 543         char *ccn = cfStringToChar(cn);
 544         if (ccn)
 545         {
 546             dprintf("SecCmsSignerInfoVerify: cn: %s\n", ccn);
 547             free(ccn);
 548         }
 549         CFRelease(cn);
 550     }
 551 #endif
 552 }
 553
 554 /*
 555  * SecCmsSignerInfoVerify - verify the signature of a single SignerInfo
 556  *
 557  * Just verifies the signature. The assumption is that verification of the certificate
 558  * is done already.
 559  */
 560 OSStatus
 561 SecCmsSignerInfoVerify(SecCmsSignerInfoRef signerinfo, CSSM_DATA_PTR digest, CSSM_DATA_PTR contentType)
 562 {
 563     return SecCmsSignerInfoVerifyWithPolicy(signerinfo,NULL, digest,contentType);
 564 }
 565
 566 OSStatus
 567 SecCmsSignerInfoVerifyWithPolicy(SecCmsSignerInfoRef signerinfo,CFTypeRef timeStampPolicy, CSSM_DATA_PTR digest, CSSM_DATA_PTR contentType)
 568 {
 569     SecPublicKeyRef publickey = NULL;
 570     SecCmsAttribute *attr = NULL;
 571     CSSM_DATA encoded_attrs;
 572     SecCertificateRef cert = NULL;
 573     SecCmsVerificationStatus vs = SecCmsVSUnverified;
 574     PLArenaPool *poolp = NULL;
 575     SECOidTag digestAlgTag, digestEncAlgTag;
 576
 577     if (signerinfo == NULL)
 578         return SECFailure;
 579
 580     /* SecCmsSignerInfoGetSigningCertificate will fail if 2nd parm is NULL and */
 581     /* cert has not been verified */
 582     if ((cert = SecCmsSignerInfoGetSigningCertificate(signerinfo, NULL)) == NULL) {
 583         dprintf("SecCmsSignerInfoVerify: no signing cert\n");
 584         vs = SecCmsVSSigningCertNotFound;
 585         goto loser;
 586     }
 587
 588     dprintfRC("SecCmsSignerInfoVerify top: cert %p cert.rc %d\n", cert, (int)CFGetRetainCount(cert));
 589
 590     debugShowSigningCertificate(signerinfo);
 591
 592     if (NULL == (publickey = SecCertificateCopyKey(cert))) {
 593         vs = SecCmsVSProcessingError;
 594         goto loser;
 595     }
 596
 597     digestAlgTag = SECOID_GetAlgorithmTag(&(signerinfo->digestAlg));
 598     digestEncAlgTag = SECOID_GetAlgorithmTag(&(signerinfo->digestEncAlg));
 599
 600     if (!SecCmsArrayIsEmpty((void **)signerinfo->authAttr)) {
 601         if (contentType) {
 602             /*
 603              * Check content type
 604              *
 605              * RFC2630 sez that if there are any authenticated attributes,
 606              * then there must be one for content type which matches the
 607              * content type of the content being signed, and there must
 608              * be one for message digest which matches our message digest.
 609              * So check these things first.
 610              */
 611             if ((attr = SecCmsAttributeArrayFindAttrByOidTag(signerinfo->authAttr,
 612                                         SEC_OID_PKCS9_CONTENT_TYPE, PR_TRUE)) == NULL)
 613             {
 614                 vs = SecCmsVSMalformedSignature;
 615                 goto loser;
 616             }
 617
 618             if (SecCmsAttributeCompareValue(attr, contentType) == PR_FALSE) {
 619                 vs = SecCmsVSMalformedSignature;
 620                 goto loser;
 621             }
 622         }
 623
 624         /*
 625          * Check digest
 626          */
 627         if ((attr = SecCmsAttributeArrayFindAttrByOidTag(signerinfo->authAttr, SEC_OID_PKCS9_MESSAGE_DIGEST, PR_TRUE)) == NULL)
 628         {
 629             vs = SecCmsVSMalformedSignature;
 630             goto loser;
 631         }
 632         if (SecCmsAttributeCompareValue(attr, digest) == PR_FALSE) {
 633             vs = SecCmsVSDigestMismatch;
 634             goto loser;
 635         }
 636
 637         if ((poolp = PORT_NewArena (1024)) == NULL) {
 638             vs = SecCmsVSProcessingError;
 639             goto loser;
 640         }
 641
 642         /*
 643          * Check signature
 644          *
 645          * The signature is based on a digest of the DER-encoded authenticated
 646          * attributes.  So, first we encode and then we digest/verify.
 647          * we trust the decoder to have the attributes in the right (sorted) order
 648          */
 649         encoded_attrs.Data = NULL;
 650         encoded_attrs.Length = 0;
 651
 652         if (SecCmsAttributeArrayEncode(poolp, &(signerinfo->authAttr), &encoded_attrs) == NULL ||
 653                 encoded_attrs.Data == NULL || encoded_attrs.Length == 0)
 654         {
 655             vs = SecCmsVSProcessingError;
 656             goto loser;
 657         }
 658
 659         vs = (VFY_VerifyData (encoded_attrs.Data, (int)encoded_attrs.Length,
 660                         publickey, &(signerinfo->encDigest),
 661                         digestAlgTag, digestEncAlgTag,
 662                         signerinfo->cmsg->pwfn_arg) != SECSuccess) ? SecCmsVSBadSignature : SecCmsVSGoodSignature;
 663
 664         dprintf("VFY_VerifyData (authenticated attributes): %s\n",
 665             (vs == SecCmsVSGoodSignature)?"SecCmsVSGoodSignature":"SecCmsVSBadSignature");
 666
 667         PORT_FreeArena(poolp, PR_FALSE);        /* awkward memory management :-( */
 668
 669     } else {
 670         CSSM_DATA_PTR sig;
 671
 672         /* No authenticated attributes. The signature is based on the plain message digest. */
 673         sig = &(signerinfo->encDigest);
 674         if (sig->Length == 0)
 675             goto loser;
 676
 677         vs = (VFY_VerifyDigest(digest, publickey, sig,
 678                         digestAlgTag, digestEncAlgTag,
 679                         signerinfo->cmsg->pwfn_arg) != SECSuccess) ? SecCmsVSBadSignature : SecCmsVSGoodSignature;
 680
 681         dprintf("VFY_VerifyData (plain message digest): %s\n",
 682             (vs == SecCmsVSGoodSignature)?"SecCmsVSGoodSignature":"SecCmsVSBadSignature");
 683     }
 684
 685     if (!SecCmsArrayIsEmpty((void **)signerinfo->unAuthAttr))
 686     {
 687         dprintf("found an unAuthAttr\n");
 688         OSStatus rux = SecCmsSignerInfoVerifyUnAuthAttrsWithPolicy(signerinfo,timeStampPolicy);
 689         dprintf("SecCmsSignerInfoVerifyUnAuthAttrs Status: %ld\n", (long)rux);
 690         if (rux) {
 691             goto loser;
 692         }
 693     }
 694
 695     if (vs == SecCmsVSBadSignature) {
 696         /*
 697          * XXX Change the generic error into our specific one, because
 698          * in that case we get a better explanation out of the Security
 699          * Advisor.  This is really a bug in our error strings (the
 700          * "generic" error has a lousy/wrong message associated with it
 701          * which assumes the signature verification was done for the
 702          * purposes of checking the issuer signature on a certificate)
 703          * but this is at least an easy workaround and/or in the
 704          * Security Advisor, which specifically checks for the error
 705          * SEC_ERROR_PKCS7_BAD_SIGNATURE and gives more explanation
 706          * in that case but does not similarly check for
 707          * SEC_ERROR_BAD_SIGNATURE.  It probably should, but then would
 708          * probably say the wrong thing in the case that it *was* the
 709          * certificate signature check that failed during the cert
 710          * verification done above.  Our error handling is really a mess.
 711          */
 712         if (PORT_GetError() == SEC_ERROR_BAD_SIGNATURE)
 713             PORT_SetError(SEC_ERROR_PKCS7_BAD_SIGNATURE);
 714     }
 715
 716     if (publickey != NULL)
 717         CFRelease(publickey);
 718
 719     signerinfo->verificationStatus = vs;
 720     dprintfRC("SecCmsSignerInfoVerify end: cerp %p cert.rc %d\n",
 721             cert, (int)CFGetRetainCount(cert));
 722
 723     dprintf("verificationStatus: %d\n", vs);
 724
 725     return (vs == SecCmsVSGoodSignature) ? SECSuccess : SECFailure;
 726
 727 loser:
 728     if (publickey != NULL)
 729         SECKEY_DestroyPublicKey (publickey);
 730
 731     dprintf("verificationStatus2: %d\n", vs);
 732     signerinfo->verificationStatus = vs;
 733
 734     PORT_SetError (SEC_ERROR_PKCS7_BAD_SIGNATURE);
 735     return SECFailure;
 736 }
 737
 738 OSStatus
 739 SecCmsSignerInfoVerifyUnAuthAttrs(SecCmsSignerInfoRef signerinfo) {
 740     return SecCmsSignerInfoVerifyUnAuthAttrsWithPolicy(signerinfo, NULL);
 741 }
 742
 743 OSStatus
 744 SecCmsSignerInfoVerifyUnAuthAttrsWithPolicy(SecCmsSignerInfoRef signerinfo,CFTypeRef timeStampPolicy)
 745 {
 746     /*
 747         unAuthAttr is an array of attributes; we expect to
 748         see just one: the timestamp blob. If we have an unAuthAttr,
 749         but don't see a timestamp, return an error since we have
 750         no other cases where this would be present.
 751     */
 752
 753     SecCmsAttribute *attr = NULL;
 754     OSStatus status = SECFailure;
 755
 756     require(signerinfo, xit);
 757     attr = SecCmsAttributeArrayFindAttrByOidTag(signerinfo->unAuthAttr,
 758         SEC_OID_PKCS9_TIMESTAMP_TOKEN, PR_TRUE);
 759     if (attr == NULL)
 760     {
 761         status = errSecTimestampMissing;
 762         goto xit;
 763     }
 764
 765     dprintf("found an id-ct-TSTInfo\n");
 766     // Don't check the nonce in this case
 767     status = decodeTimeStampTokenWithPolicy(signerinfo, timeStampPolicy, (attr->values)[0], &signerinfo->encDigest, 0);
 768     if (status != errSecSuccess) {
 769         secerror("timestamp verification failed: %d", (int)status);
 770     }
 771
 772 xit:
 773     return status;
 774 }
 775
 776 CSSM_DATA *
 777 SecCmsSignerInfoGetEncDigest(SecCmsSignerInfoRef signerinfo)
 778 {
 779     return &signerinfo->encDigest;
 780 }
 781
 782 SecCmsVerificationStatus
 783 SecCmsSignerInfoGetVerificationStatus(SecCmsSignerInfoRef signerinfo)
 784 {
 785     return signerinfo->verificationStatus;
 786 }
 787
 788 SECOidData *
 789 SecCmsSignerInfoGetDigestAlg(SecCmsSignerInfoRef signerinfo)
 790 {
 791     return SECOID_FindOID (&(signerinfo->digestAlg.algorithm));
 792 }
 793
 794 SECOidTag
 795 SecCmsSignerInfoGetDigestAlgTag(SecCmsSignerInfoRef signerinfo)
 796 {
 797     SECOidData *algdata;
 798
 799     algdata = SECOID_FindOID (&(signerinfo->digestAlg.algorithm));
 800     if (algdata != NULL)
 801         return algdata->offset;
 802     else
 803         return SEC_OID_UNKNOWN;
 804 }
 805
 806 CFArrayRef
 807 SecCmsSignerInfoGetCertList(SecCmsSignerInfoRef signerinfo)
 808 {
 809     dprintfRC("SecCmsSignerInfoGetCertList: certList.rc %d\n",
 810             (int)CFGetRetainCount(signerinfo->certList));
 811     return signerinfo->certList;
 812 }
 813
 814 CFArrayRef
 815 SecCmsSignerInfoGetTimestampCertList(SecCmsSignerInfoRef signerinfo)
 816 {
 817     dprintfRC("SecCmsSignerInfoGetTimestampCertList: timestampCertList.rc %d\n",
 818             (int)CFGetRetainCount(signerinfo->timestampCertList));
 819     return signerinfo->timestampCertList;
 820 }
 821
 822 SecCertificateRef
 823 SecCmsSignerInfoGetTimestampSigningCert(SecCmsSignerInfoRef signerinfo)
 824 {
 825     dprintfRC("SecCmsSignerInfoGetTimestampSigningCert: timestampCert.rc %d\n",
 826               (int)CFGetRetainCount(signerinfo->timestampCert));
 827     return signerinfo->timestampCert;
 828 }
 829
 830 int
 831 SecCmsSignerInfoGetVersion(SecCmsSignerInfoRef signerinfo)
 832 {
 833     unsigned long version;
 834
 835     /* always take apart the CSSM_DATA */
 836     if (SEC_ASN1DecodeInteger(&(signerinfo->version), &version) != SECSuccess)
 837         return 0;
 838     else
 839         return (int)version;
 840 }
 841
 842 /*
 843  * SecCmsSignerInfoGetSigningTime - return the signing time,
 844  *                                    in UTCTime format, of a CMS signerInfo.
 845  *
 846  * sinfo - signerInfo data for this signer
 847  *
 848  * Returns a pointer to XXXX (what?)
 849  * A return value of NULL is an error.
 850  */
 851 OSStatus
 852 SecCmsSignerInfoGetSigningTime(SecCmsSignerInfoRef sinfo, CFAbsoluteTime *stime)
 853 {
 854     SecCmsAttribute *attr;
 855     CSSM_DATA_PTR value;
 856
 857     if (sinfo == NULL)
 858         return paramErr;
 859
 860     if (sinfo->signingTime != 0) {
 861         *stime = sinfo->signingTime;    /* cached copy */
 862         return SECSuccess;
 863     }
 864
 865     attr = SecCmsAttributeArrayFindAttrByOidTag(sinfo->authAttr, SEC_OID_PKCS9_SIGNING_TIME, PR_TRUE);
 866     /* XXXX multi-valued attributes NIH */
 867     if (attr == NULL || (value = SecCmsAttributeGetValue(attr)) == NULL)
 868         return errSecSigningTimeMissing;
 869     if (DER_UTCTimeToCFDate(value, stime) != SECSuccess)
 870         return errSecSigningTimeMissing;
 871     sinfo->signingTime = *stime;        /* make cached copy */
 872     return SECSuccess;
 873 }
 874
 875 OSStatus
 876 SecCmsSignerInfoGetTimestampTime(SecCmsSignerInfoRef sinfo, CFAbsoluteTime *stime)
 877 {
 878     return SecCmsSignerInfoGetTimestampTimeWithPolicy(sinfo, NULL, stime);
 879 }
 880
 881 OSStatus
 882 SecCmsSignerInfoGetTimestampTimeWithPolicy(SecCmsSignerInfoRef sinfo, CFTypeRef timeStampPolicy, CFAbsoluteTime *stime)
 883 {
 884     OSStatus status = paramErr;
 885
 886     require(sinfo && stime, xit);
 887
 888     if (sinfo->timestampTime != 0)
 889     {
 890         *stime = sinfo->timestampTime;  /* cached copy */
 891         return noErr;
 892     }
 893
 894     // A bit heavyweight if haven't already called verify
 895     status = SecCmsSignerInfoVerifyUnAuthAttrsWithPolicy(sinfo,timeStampPolicy);
 896     *stime = sinfo->timestampTime;
 897 xit:
 898     return status;
 899 }
 900
 901 /*!
 902      @function
 903      @abstract Return the data in the signed Codesigning Hash Agility attribute.
 904      @param sinfo SignerInfo data for this signer, pointer to a CFDataRef for attribute value
 905      @discussion Returns a CFDataRef containing the value of the attribute
 906      @result A return value of errSecInternal is an error trying to look up the oid.
 907              A status value of success with null result data indicates the attribute was not present.
 908  */
 909 OSStatus
 910 SecCmsSignerInfoGetAppleCodesigningHashAgility(SecCmsSignerInfoRef sinfo, CFDataRef *sdata)
 911 {
 912     SecCmsAttribute *attr;
 913     CSSM_DATA_PTR value;
 914
 915     if (sinfo == NULL || sdata == NULL)
 916         return paramErr;
 917
 918     *sdata = NULL;
 919
 920     if (sinfo->hashAgilityAttrValue != NULL) {
 921         *sdata = sinfo->hashAgilityAttrValue;   /* cached copy */
 922         return SECSuccess;
 923     }
 924
 925     attr = SecCmsAttributeArrayFindAttrByOidTag(sinfo->authAttr, SEC_OID_APPLE_HASH_AGILITY, PR_TRUE);
 926
 927     /* attribute not found */
 928     if (attr == NULL || (value = SecCmsAttributeGetValue(attr)) == NULL)
 929         return SECSuccess;
 930
 931     sinfo->hashAgilityAttrValue = CFDataCreate(NULL, value->Data, value->Length);       /* make cached copy */
 932     if (sinfo->hashAgilityAttrValue) {
 933         *sdata = sinfo->hashAgilityAttrValue;
 934         return SECSuccess;
 935     }
 936     return errSecAllocate;
 937 }
 938
 939 /* AgileHash ::= SEQUENCE {
 940     hashType OBJECT IDENTIFIER,
 941     hashValues OCTET STRING }
 942  */
 943 typedef struct {
 944     SecAsn1Item digestOID;
 945     SecAsn1Item digestValue;
 946 } CMSAppleAgileHash;
 947
 948 static const SecAsn1Template CMSAppleAgileHashTemplate[] = {
 949     { SEC_ASN1_SEQUENCE,
 950         0, NULL, sizeof(CMSAppleAgileHash) },
 951     { SEC_ASN1_OBJECT_ID,
 952         offsetof(CMSAppleAgileHash, digestOID), },
 953     { SEC_ASN1_OCTET_STRING,
 954         offsetof(CMSAppleAgileHash, digestValue), },
 955     { 0, }
 956 };
 957
 958 static OSStatus CMSAddAgileHashToDictionary(CFMutableDictionaryRef dictionary, SecAsn1Item *DERAgileHash) {
 959     PLArenaPool *tmppoolp = NULL;
 960     OSStatus status = errSecSuccess;
 961     CMSAppleAgileHash agileHash;
 962     CFDataRef digestValue = NULL;
 963     CFNumberRef digestTag = NULL;
 964
 965     tmppoolp = PORT_NewArena(1024);
 966     if (tmppoolp == NULL) {
 967         return errSecAllocate;
 968     }
 969
 970     if ((status = SEC_ASN1DecodeItem(tmppoolp, &agileHash, CMSAppleAgileHashTemplate, DERAgileHash)) != errSecSuccess) {
 971         goto loser;
 972     }
 973
 974     int64_t tag = SECOID_FindOIDTag(&agileHash.digestOID);
 975     digestTag = CFNumberCreate(NULL, kCFNumberSInt64Type, &tag);
 976     digestValue = CFDataCreate(NULL, agileHash.digestValue.Data, agileHash.digestValue.Length);
 977     CFDictionaryAddValue(dictionary, digestTag, digestValue);
 978
 979 loser:
 980     CFReleaseNull(digestValue);
 981     CFReleaseNull(digestTag);
 982     if (tmppoolp) {
 983         PORT_FreeArena(tmppoolp, PR_FALSE);
 984     }
 985     return status;
 986 }
 987
 988 /*!
 989  @function
 990  @abstract Return the data in the signed Codesigning Hash Agility V2 attribute.
 991  @param sinfo SignerInfo data for this signer, pointer to a CFDictionaryRef for attribute values
 992  @discussion Returns a CFDictionaryRef containing the values of the attribute
 993  @result A return value of errSecInternal is an error trying to look up the oid.
 994  A status value of success with null result data indicates the attribute was not present.
 995  */
 996 OSStatus
 997 SecCmsSignerInfoGetAppleCodesigningHashAgilityV2(SecCmsSignerInfoRef sinfo, CFDictionaryRef *sdict)
 998 {
 999     SecCmsAttribute *attr;
1000
1001     if (sinfo == NULL || sdict == NULL) {
1002         return errSecParam;
1003     }
1004
1005     *sdict = NULL;
1006
1007     if (sinfo->hashAgilityV2AttrValues != NULL) {
1008         *sdict = sinfo->hashAgilityV2AttrValues;    /* cached copy */
1009         return SECSuccess;
1010     }
1011
1012     attr = SecCmsAttributeArrayFindAttrByOidTag(sinfo->authAttr, SEC_OID_APPLE_HASH_AGILITY_V2, PR_TRUE);
1013
1014     /* attribute not found */
1015     if (attr == NULL) {
1016         return SECSuccess;
1017     }
1018
1019     /* attrValues SET OF AttributeValue
1020      * AttributeValue ::= ANY
1021      */
1022     CSSM_DATA_PTR *values = attr->values;
1023     if (values == NULL) { /* There must be values */
1024         return errSecDecode;
1025     }
1026
1027     CFMutableDictionaryRef agileHashValues = CFDictionaryCreateMutable(NULL, SecCmsArrayCount((void **)values),
1028                                                                        &kCFTypeDictionaryKeyCallBacks,
1029                                                                        &kCFTypeDictionaryValueCallBacks);
1030     while (*values != NULL) {
1031         (void)CMSAddAgileHashToDictionary(agileHashValues, *values++);
1032     }
1033     if (CFDictionaryGetCount(agileHashValues) != SecCmsArrayCount((void **)attr->values)) {
1034         CFReleaseNull(agileHashValues);
1035         return errSecDecode;
1036     }
1037
1038     sinfo->hashAgilityV2AttrValues = agileHashValues;    /* make cached copy */
1039     if (sinfo->hashAgilityV2AttrValues) {
1040         *sdict = sinfo->hashAgilityV2AttrValues;
1041         return SECSuccess;
1042     }
1043     return errSecAllocate;
1044 }
1045
1046 /*
1047  * SecCmsSignerInfoGetAppleExpirationTime - return the expiration time,
1048  *                      in UTCTime format, of a CMS signerInfo.
1049  *
1050  * sinfo - signerInfo data for this signer
1051  *
1052  * Returns a pointer to XXXX (what?)
1053  * A return value of NULL is an error.
1054  */
1055 OSStatus
1056 SecCmsSignerInfoGetAppleExpirationTime(SecCmsSignerInfoRef sinfo, CFAbsoluteTime *etime)
1057 {
1058     SecCmsAttribute *attr = NULL;
1059     SecAsn1Item * value = NULL;
1060
1061     if (sinfo == NULL || etime == NULL) {
1062         return SECFailure;
1063     }
1064
1065     if (sinfo->expirationTime != 0) {
1066         *etime = sinfo->expirationTime;    /* cached copy */
1067         return SECSuccess;
1068     }
1069
1070     attr = SecCmsAttributeArrayFindAttrByOidTag(sinfo->authAttr, SEC_OID_APPLE_EXPIRATION_TIME, PR_TRUE);
1071     if (attr == NULL || (value = SecCmsAttributeGetValue(attr)) == NULL) {
1072         return SECFailure;
1073     }
1074     if (DER_UTCTimeToCFDate(value, etime) != SECSuccess) {
1075         return SECFailure;
1076     }
1077     sinfo->expirationTime = *etime;    /* make cached copy */
1078     return SECSuccess;
1079 }
1080
1081 /*
1082  * Return the signing cert of a CMS signerInfo.
1083  *
1084  * the certs in the enclosing SignedData must have been imported already
1085  */
1086 SecCertificateRef
1087 SecCmsSignerInfoGetSigningCertificate(SecCmsSignerInfoRef signerinfo, SecKeychainRef keychainOrArray)
1088 {
1089     SecCertificateRef cert;
1090     SecCmsSignerIdentifier *sid;
1091     OSStatus ortn;
1092     CSSM_DATA_PTR *rawCerts;
1093
1094     if (signerinfo->cert != NULL) {
1095         dprintfRC("SecCmsSignerInfoGetSigningCertificate top: cert %p cert.rc %d\n",
1096             signerinfo->cert, (int)CFGetRetainCount(signerinfo->cert));
1097         return signerinfo->cert;
1098     }
1099     ortn = SecCmsSignedDataRawCerts(signerinfo->sigd, &rawCerts);
1100     if(ortn) {
1101         return NULL;
1102     }
1103     dprintf("SecCmsSignerInfoGetSigningCertificate: numRawCerts %d\n",
1104         SecCmsArrayCount((void **)rawCerts));
1105
1106     /*
1107      * This cert will also need to be freed, but since we save it
1108      * in signerinfo for later, we do not want to destroy it when
1109      * we leave this function -- we let the clean-up of the entire
1110      * cinfo structure later do the destroy of this cert.
1111      */
1112     sid = &signerinfo->signerIdentifier;
1113     switch (sid->identifierType) {
1114     case SecCmsSignerIDIssuerSN:
1115         cert = CERT_FindCertByIssuerAndSN(keychainOrArray, rawCerts, signerinfo->sigd->certs, signerinfo->cmsg->poolp,
1116             sid->id.issuerAndSN);
1117         break;
1118     case SecCmsSignerIDSubjectKeyID:
1119         cert = CERT_FindCertBySubjectKeyID(keychainOrArray, rawCerts, signerinfo->sigd->certs, sid->id.subjectKeyID);
1120         break;
1121     default:
1122         cert = NULL;
1123         break;
1124     }
1125
1126     /* cert can be NULL at that point */
1127     signerinfo->cert = cert;    /* earmark it */
1128     dprintfRC("SecCmsSignerInfoGetSigningCertificate end: certp %p cert.rc %d\n",
1129             signerinfo->cert, (int)CFGetRetainCount(signerinfo->cert));
1130
1131     return cert;
1132 }
1133
1134 /*
1135  * SecCmsSignerInfoGetSignerCommonName - return the common name of the signer
1136  *
1137  * sinfo - signerInfo data for this signer
1138  *
1139  * Returns a CFStringRef containing the common name of the signer.
1140  * A return value of NULL is an error.
1141  */
1142 CFStringRef
1143 SecCmsSignerInfoGetSignerCommonName(SecCmsSignerInfoRef sinfo)
1144 {
1145     SecCertificateRef signercert;
1146     CFStringRef commonName = NULL;
1147
1148     /* will fail if cert is not verified */
1149     if ((signercert = SecCmsSignerInfoGetSigningCertificate(sinfo, NULL)) == NULL)
1150         return NULL;
1151
1152     if (errSecSuccess != SecCertificateCopyCommonName(signercert, &commonName)) {
1153         return NULL;
1154     }
1155
1156     return commonName;
1157 }
1158
1159 /*
1160  * SecCmsSignerInfoGetSignerEmailAddress - return the email address of the signer
1161  *
1162  * sinfo - signerInfo data for this signer
1163  *
1164  * Returns a CFStringRef containing the name of the signer.
1165  * A return value of NULL is an error.
1166  */
1167 CFStringRef
1168 SecCmsSignerInfoGetSignerEmailAddress(SecCmsSignerInfoRef sinfo)
1169 {
1170     SecCertificateRef signercert;
1171     CFStringRef emailAddress = NULL;
1172
1173     if ((signercert = SecCmsSignerInfoGetSigningCertificate(sinfo, NULL)) == NULL) {
1174         return NULL;
1175     }
1176
1177     CFArrayRef names = SecCertificateCopyRFC822Names(signercert);
1178     if (names) {
1179         if (CFArrayGetCount(names) > 0) {
1180             emailAddress = (CFStringRef)CFArrayGetValueAtIndex(names, 0);
1181         }
1182         CFRetainSafe(emailAddress);
1183         CFRelease(names);
1184     }
1185     return emailAddress;
1186 }
1187
1188
1189 /*
1190  * SecCmsSignerInfoAddAuthAttr - add an attribute to the
1191  * authenticated (i.e. signed) attributes of "signerinfo".
1192  */
1193 OSStatus
1194 SecCmsSignerInfoAddAuthAttr(SecCmsSignerInfoRef signerinfo, SecCmsAttribute *attr)
1195 {
1196     return SecCmsAttributeArrayAddAttr(signerinfo->cmsg->poolp, &(signerinfo->authAttr), attr);
1197 }
1198
1199 /*
1200  * SecCmsSignerInfoAddUnauthAttr - add an attribute to the
1201  * unauthenticated attributes of "signerinfo".
1202  */
1203 OSStatus
1204 SecCmsSignerInfoAddUnauthAttr(SecCmsSignerInfoRef signerinfo, SecCmsAttribute *attr)
1205 {
1206     return SecCmsAttributeArrayAddAttr(signerinfo->cmsg->poolp, &(signerinfo->unAuthAttr), attr);
1207 }
1208
1209 /*
1210  * SecCmsSignerInfoAddSigningTime - add the signing time to the
1211  * authenticated (i.e. signed) attributes of "signerinfo".
1212  *
1213  * This is expected to be included in outgoing signed
1214  * messages for email (S/MIME) but is likely useful in other situations.
1215  *
1216  * This should only be added once; a second call will do nothing.
1217  *
1218  * XXX This will probably just shove the current time into "signerinfo"
1219  * but it will not actually get signed until the entire item is
1220  * processed for encoding.  Is this (expected to be small) delay okay?
1221  */
1222 OSStatus
1223 SecCmsSignerInfoAddSigningTime(SecCmsSignerInfoRef signerinfo, CFAbsoluteTime t)
1224 {
1225     SecCmsAttribute *attr;
1226     CSSM_DATA stime;
1227     void *mark;
1228     PLArenaPool *poolp;
1229
1230     poolp = signerinfo->cmsg->poolp;
1231
1232     mark = PORT_ArenaMark(poolp);
1233
1234     /* create new signing time attribute */
1235     if (DER_CFDateToUTCTime(t, &stime) != SECSuccess)
1236         goto loser;
1237
1238     if ((attr = SecCmsAttributeCreate(poolp, SEC_OID_PKCS9_SIGNING_TIME, &stime, PR_FALSE)) == NULL) {
1239         SECITEM_FreeItem (&stime, PR_FALSE);
1240         goto loser;
1241     }
1242
1243     SECITEM_FreeItem (&stime, PR_FALSE);
1244
1245     if (SecCmsSignerInfoAddAuthAttr(signerinfo, attr) != SECSuccess)
1246         goto loser;
1247
1248     PORT_ArenaUnmark (poolp, mark);
1249
1250     return SECSuccess;
1251
1252 loser:
1253     PORT_ArenaRelease (poolp, mark);
1254     return SECFailure;
1255 }
1256
1257 /*
1258  * SecCmsSignerInfoAddSMIMECaps - add a SMIMECapabilities attribute to the
1259  * authenticated (i.e. signed) attributes of "signerinfo".
1260  *
1261  * This is expected to be included in outgoing signed
1262  * messages for email (S/MIME).
1263  */
1264 OSStatus
1265 SecCmsSignerInfoAddSMIMECaps(SecCmsSignerInfoRef signerinfo)
1266 {
1267     SecCmsAttribute *attr;
1268     CSSM_DATA_PTR smimecaps = NULL;
1269     void *mark;
1270     PLArenaPool *poolp;
1271
1272     poolp = signerinfo->cmsg->poolp;
1273
1274     mark = PORT_ArenaMark(poolp);
1275
1276     smimecaps = SECITEM_AllocItem(poolp, NULL, 0);
1277     if (smimecaps == NULL)
1278         goto loser;
1279
1280     /* create new signing time attribute */
1281 #if 1
1282     // @@@ We don't do Fortezza yet.
1283     if (SecSMIMECreateSMIMECapabilities((SecArenaPoolRef)poolp, smimecaps, PR_FALSE) != SECSuccess)
1284 #else
1285     if (SecSMIMECreateSMIMECapabilities(poolp, smimecaps,
1286                             PK11_FortezzaHasKEA(signerinfo->cert)) != SECSuccess)
1287 #endif
1288         goto loser;
1289
1290     if ((attr = SecCmsAttributeCreate(poolp, SEC_OID_PKCS9_SMIME_CAPABILITIES, smimecaps, PR_TRUE)) == NULL)
1291         goto loser;
1292
1293     if (SecCmsSignerInfoAddAuthAttr(signerinfo, attr) != SECSuccess)
1294         goto loser;
1295
1296     PORT_ArenaUnmark (poolp, mark);
1297     return SECSuccess;
1298
1299 loser:
1300     PORT_ArenaRelease (poolp, mark);
1301     return SECFailure;
1302 }
1303
1304 /*
1305  * SecCmsSignerInfoAddSMIMEEncKeyPrefs - add a SMIMEEncryptionKeyPreferences attribute to the
1306  * authenticated (i.e. signed) attributes of "signerinfo".
1307  *
1308  * This is expected to be included in outgoing signed messages for email (S/MIME).
1309  */
1310 OSStatus
1311 SecCmsSignerInfoAddSMIMEEncKeyPrefs(SecCmsSignerInfoRef signerinfo, SecCertificateRef cert, SecKeychainRef keychainOrArray)
1312 {
1313     SecCmsAttribute *attr;
1314     CSSM_DATA_PTR smimeekp = NULL;
1315     void *mark;
1316     PLArenaPool *poolp;
1317
1318 #if 0
1319     CFTypeRef policy;
1320
1321     /* verify this cert for encryption */
1322     policy = CERT_PolicyForCertUsage(certUsageEmailRecipient);
1323     if (CERT_VerifyCert(keychainOrArray, cert, policy, CFAbsoluteTimeGetCurrent(), NULL) != SECSuccess) {
1324         CFRelease(policy);
1325         return SECFailure;
1326     }
1327     CFRelease(policy);
1328 #endif
1329
1330     poolp = signerinfo->cmsg->poolp;
1331     mark = PORT_ArenaMark(poolp);
1332
1333     smimeekp = SECITEM_AllocItem(poolp, NULL, 0);
1334     if (smimeekp == NULL)
1335         goto loser;
1336
1337     /* create new signing time attribute */
1338     if (SecSMIMECreateSMIMEEncKeyPrefs((SecArenaPoolRef)poolp, smimeekp, cert) != SECSuccess)
1339         goto loser;
1340
1341     if ((attr = SecCmsAttributeCreate(poolp, SEC_OID_SMIME_ENCRYPTION_KEY_PREFERENCE, smimeekp, PR_TRUE)) == NULL)
1342         goto loser;
1343
1344     if (SecCmsSignerInfoAddAuthAttr(signerinfo, attr) != SECSuccess)
1345         goto loser;
1346
1347     PORT_ArenaUnmark (poolp, mark);
1348     return SECSuccess;
1349
1350 loser:
1351     PORT_ArenaRelease (poolp, mark);
1352     return SECFailure;
1353 }
1354
1355 /*
1356  * SecCmsSignerInfoAddMSSMIMEEncKeyPrefs - add a SMIMEEncryptionKeyPreferences attribute to the
1357  * authenticated (i.e. signed) attributes of "signerinfo", using the OID preferred by Microsoft.
1358  *
1359  * This is expected to be included in outgoing signed messages for email (S/MIME),
1360  * if compatibility with Microsoft mail clients is wanted.
1361  */
1362 OSStatus
1363 SecCmsSignerInfoAddMSSMIMEEncKeyPrefs(SecCmsSignerInfoRef signerinfo, SecCertificateRef cert, SecKeychainRef keychainOrArray)
1364 {
1365     SecCmsAttribute *attr;
1366     CSSM_DATA_PTR smimeekp = NULL;
1367     void *mark;
1368     PLArenaPool *poolp;
1369
1370 #if 0
1371     CFTypeRef policy;
1372
1373     /* verify this cert for encryption */
1374     policy = CERT_PolicyForCertUsage(certUsageEmailRecipient);
1375     if (CERT_VerifyCert(keychainOrArray, cert, policy, CFAbsoluteTimeGetCurrent(), NULL) != SECSuccess) {
1376         CFRelease(policy);
1377         return SECFailure;
1378     }
1379     CFRelease(policy);
1380 #endif
1381
1382     poolp = signerinfo->cmsg->poolp;
1383     mark = PORT_ArenaMark(poolp);
1384
1385     smimeekp = SECITEM_AllocItem(poolp, NULL, 0);
1386     if (smimeekp == NULL)
1387         goto loser;
1388
1389     /* create new signing time attribute */
1390     if (SecSMIMECreateMSSMIMEEncKeyPrefs((SecArenaPoolRef)poolp, smimeekp, cert) != SECSuccess)
1391         goto loser;
1392
1393     if ((attr = SecCmsAttributeCreate(poolp, SEC_OID_MS_SMIME_ENCRYPTION_KEY_PREFERENCE, smimeekp, PR_TRUE)) == NULL)
1394         goto loser;
1395
1396     if (SecCmsSignerInfoAddAuthAttr(signerinfo, attr) != SECSuccess)
1397         goto loser;
1398
1399     PORT_ArenaUnmark (poolp, mark);
1400     return SECSuccess;
1401
1402 loser:
1403     PORT_ArenaRelease (poolp, mark);
1404     return SECFailure;
1405 }
1406
1407 /*
1408  * SecCmsSignerInfoAddTimeStamp - add time stamp to the
1409  * unauthenticated (i.e. unsigned) attributes of "signerinfo".
1410  *
1411  * This will initially be used for time stamping signed applications
1412  * by using a Time Stamping Authority. It may also be included in outgoing signed
1413  * messages for email (S/MIME), and may be useful in other situations.
1414  *
1415  * This should only be added once; a second call will do nothing.
1416  *
1417  */
1418
1419 /*
1420 Countersignature attribute values have ASN.1 type Countersignature:
1421       Countersignature ::= SignerInfo
1422    Countersignature values have the same meaning as SignerInfo values
1423    for ordinary signatures, except that:
1424    1.  The signedAttributes field MUST NOT contain a content-type
1425        attribute; there is no content type for countersignatures.
1426    2.  The signedAttributes field MUST contain a message-digest
1427        attribute if it contains any other attributes.
1428    3.  The input to the message-digesting process is the contents octets
1429        of the DER encoding of the signatureValue field of the SignerInfo
1430        value with which the attribute is associated.
1431 */
1432
1433 /*!
1434     @function
1435     @abstract Create a timestamp unsigned attribute with a TimeStampToken.
1436 */
1437
1438 OSStatus
1439 SecCmsSignerInfoAddTimeStamp(SecCmsSignerInfoRef signerinfo, CSSM_DATA *tstoken)
1440 {
1441     SecCmsAttribute *attr;
1442     PLArenaPool *poolp = signerinfo->cmsg->poolp;
1443     void *mark = PORT_ArenaMark(poolp);
1444
1445     // We have already encoded this ourselves, so last param is PR_TRUE
1446     if ((attr = SecCmsAttributeCreate(poolp, SEC_OID_PKCS9_TIMESTAMP_TOKEN, tstoken, PR_TRUE)) == NULL)
1447         goto loser;
1448
1449     if (SecCmsSignerInfoAddUnauthAttr(signerinfo, attr) != SECSuccess)
1450         goto loser;
1451
1452     PORT_ArenaUnmark (poolp, mark);
1453
1454     return SECSuccess;
1455
1456 loser:
1457     PORT_ArenaRelease (poolp, mark);
1458     return SECFailure;
1459 }
1460
1461 /*
1462  * SecCmsSignerInfoAddCounterSignature - countersign a signerinfo
1463  *
1464  * 1. digest the DER-encoded signature value of the original signerinfo
1465  * 2. create new signerinfo with correct version, sid, digestAlg
1466  * 3. add message-digest authAttr, but NO content-type
1467  * 4. sign the authAttrs
1468  * 5. DER-encode the new signerInfo
1469  * 6. add the whole thing to original signerInfo's unAuthAttrs
1470  *    as a SEC_OID_PKCS9_COUNTER_SIGNATURE attribute
1471  *
1472  * XXXX give back the new signerinfo?
1473  */
1474 OSStatus
1475 SecCmsSignerInfoAddCounterSignature(SecCmsSignerInfoRef signerinfo,
1476                                     SECOidTag digestalg, SecIdentityRef identity)
1477 {
1478     /* XXXX TBD XXXX */
1479     return SECFailure;
1480 }
1481
1482 /*!
1483      @function
1484      @abstract Add the Apple Codesigning Hash Agility attribute to the authenticated (i.e. signed) attributes of "signerinfo".
1485      @discussion This is expected to be included in outgoing Apple code signatures.
1486  */
1487 OSStatus
1488 SecCmsSignerInfoAddAppleCodesigningHashAgility(SecCmsSignerInfoRef signerinfo, CFDataRef attrValue)
1489 {
1490     SecCmsAttribute *attr;
1491     PLArenaPool *poolp = signerinfo->cmsg->poolp;
1492     void *mark = PORT_ArenaMark(poolp);
1493     OSStatus status = SECFailure;
1494
1495     /* The value is required for this attribute. */
1496     if (!attrValue) {
1497         status = errSecParam;
1498         goto loser;
1499     }
1500
1501     /*
1502      * SecCmsAttributeCreate makes a copy of the data in value, so
1503      * we don't need to copy into the CSSM_DATA struct.
1504      */
1505     CSSM_DATA value;
1506     value.Length = CFDataGetLength(attrValue);
1507     value.Data = (uint8_t *)CFDataGetBytePtr(attrValue);
1508
1509     if ((attr = SecCmsAttributeCreate(poolp,
1510                                       SEC_OID_APPLE_HASH_AGILITY,
1511                                       &value,
1512                                       PR_FALSE)) == NULL) {
1513         status = errSecAllocate;
1514         goto loser;
1515     }
1516
1517     if (SecCmsSignerInfoAddAuthAttr(signerinfo, attr) != SECSuccess) {
1518         status = errSecInternalError;
1519         goto loser;
1520     }
1521
1522     PORT_ArenaUnmark(poolp, mark);
1523     return SECSuccess;
1524
1525 loser:
1526     PORT_ArenaRelease(poolp, mark);
1527     return status;
1528 }
1529
1530 static OSStatus CMSAddAgileHashToAttribute(PLArenaPool *poolp, SecCmsAttribute *attr, CFNumberRef cftag, CFDataRef value) {
1531     PLArenaPool *tmppoolp = NULL;
1532     int64_t tag;
1533     SECOidData *digestOid = NULL;
1534     CMSAppleAgileHash agileHash;
1535     SecAsn1Item attrValue = { .Data = NULL, .Length = 0 };
1536     OSStatus status = errSecSuccess;
1537
1538     memset(&agileHash, 0, sizeof(agileHash));
1539
1540     if(!CFNumberGetValue(cftag, kCFNumberSInt64Type, &tag)) {
1541         return errSecParam;
1542     }
1543     digestOid = SECOID_FindOIDByTag((SECOidTag)tag);
1544
1545     agileHash.digestValue.Data = (uint8_t *)CFDataGetBytePtr(value);
1546     agileHash.digestValue.Length = CFDataGetLength(value);
1547     agileHash.digestOID.Data = digestOid->oid.Data;
1548     agileHash.digestOID.Length = digestOid->oid.Length;
1549
1550     tmppoolp = PORT_NewArena(1024);
1551     if (tmppoolp == NULL) {
1552         return errSecAllocate;
1553     }
1554
1555     if (SEC_ASN1EncodeItem(tmppoolp, &attrValue, &agileHash, CMSAppleAgileHashTemplate) == NULL) {
1556         status = errSecParam;
1557         goto loser;
1558     }
1559
1560     status = SecCmsAttributeAddValue(poolp, attr, &attrValue);
1561
1562 loser:
1563     if (tmppoolp) {
1564         PORT_FreeArena(tmppoolp, PR_FALSE);
1565     }
1566     return status;
1567 }
1568
1569 /*!
1570  @function
1571  @abstract Add the Apple Codesigning Hash Agility attribute to the authenticated (i.e. signed) attributes of "signerinfo".
1572  @discussion This is expected to be included in outgoing Apple code signatures.
1573  */
1574 OSStatus
1575 SecCmsSignerInfoAddAppleCodesigningHashAgilityV2(SecCmsSignerInfoRef signerinfo, CFDictionaryRef attrValues)
1576 {
1577     __block SecCmsAttribute *attr;
1578     __block PLArenaPool *poolp = signerinfo->cmsg->poolp;
1579     void *mark = PORT_ArenaMark(poolp);
1580     OSStatus status = SECFailure;
1581
1582     /* The value is required for this attribute. */
1583     if (!attrValues) {
1584         status = errSecParam;
1585         goto loser;
1586     }
1587
1588     if ((attr = SecCmsAttributeCreate(poolp, SEC_OID_APPLE_HASH_AGILITY_V2,
1589                                       NULL, PR_TRUE)) == NULL) {
1590         status = errSecAllocate;
1591         goto loser;
1592     }
1593
1594     CFDictionaryForEach(attrValues, ^(const void *key, const void *value) {
1595         if (!isNumber(key) || !isData(value)) {
1596             return;
1597         }
1598         (void)CMSAddAgileHashToAttribute(poolp, attr, (CFNumberRef)key, (CFDataRef)value);
1599     });
1600
1601     if (SecCmsSignerInfoAddAuthAttr(signerinfo, attr) != SECSuccess) {
1602         status = errSecInternal;
1603         goto loser;
1604     }
1605
1606     PORT_ArenaUnmark(poolp, mark);
1607     return SECSuccess;
1608
1609 loser:
1610     PORT_ArenaRelease(poolp, mark);
1611     return status;
1612 }
1613
1614 /*
1615  * SecCmsSignerInfoAddAppleExpirationTime - add the expiration time to the
1616  * authenticated (i.e. signed) attributes of "signerinfo".
1617  *
1618  * This is expected to be included in outgoing signed
1619  * messages for Asset Receipts but is likely useful in other situations.
1620  *
1621  * This should only be added once; a second call will do nothing.
1622  */
1623 OSStatus
1624 SecCmsSignerInfoAddAppleExpirationTime(SecCmsSignerInfoRef signerinfo, CFAbsoluteTime t)
1625 {
1626     SecCmsAttribute *attr = NULL;
1627     PLArenaPool *poolp = signerinfo->cmsg->poolp;
1628     void *mark = PORT_ArenaMark(poolp);
1629
1630     /* create new expiration time attribute */
1631     SecAsn1Item etime;
1632     if (DER_CFDateToUTCTime(t, &etime) != SECSuccess) {
1633         goto loser;
1634     }
1635
1636     if ((attr = SecCmsAttributeCreate(poolp, SEC_OID_APPLE_EXPIRATION_TIME, &etime, PR_FALSE)) == NULL) {
1637         SECITEM_FreeItem (&etime, PR_FALSE);
1638         goto loser;
1639     }
1640
1641     SECITEM_FreeItem(&etime, PR_FALSE);
1642
1643     if (SecCmsSignerInfoAddAuthAttr(signerinfo, attr) != SECSuccess) {
1644         goto loser;
1645     }
1646
1647     PORT_ArenaUnmark(poolp, mark);
1648     return SECSuccess;
1649
1650 loser:
1651     PORT_ArenaRelease(poolp, mark);
1652     return SECFailure;
1653 }
1654
1655 SecCertificateRef SecCmsSignerInfoCopyCertFromEncryptionKeyPreference(SecCmsSignerInfoRef signerinfo) {
1656     SecCertificateRef cert = NULL;
1657     SecCmsAttribute *attr;
1658     CSSM_DATA_PTR ekp;
1659     SecKeychainRef keychainOrArray;
1660
1661     (void)SecKeychainCopyDefault(&keychainOrArray);
1662
1663     /* sanity check - see if verification status is ok (unverified does not count...) */
1664     if (signerinfo->verificationStatus != SecCmsVSGoodSignature)
1665         return NULL;
1666
1667     /* Prep the raw certs */
1668     CSSM_DATA_PTR *rawCerts = NULL;
1669     if (signerinfo->sigd) {
1670         rawCerts = signerinfo->sigd->rawCerts;
1671     }
1672
1673     /* find preferred encryption cert */
1674     if (!SecCmsArrayIsEmpty((void **)signerinfo->authAttr) &&
1675         (attr = SecCmsAttributeArrayFindAttrByOidTag(signerinfo->authAttr,
1676                                                      SEC_OID_SMIME_ENCRYPTION_KEY_PREFERENCE, PR_TRUE)) != NULL)
1677     { /* we have a SMIME_ENCRYPTION_KEY_PREFERENCE attribute! Find the cert. */
1678         ekp = SecCmsAttributeGetValue(attr);
1679         if (ekp == NULL)
1680             return NULL;
1681         cert = SecSMIMEGetCertFromEncryptionKeyPreference(keychainOrArray, rawCerts, ekp);
1682     }
1683     if(cert) return cert;
1684
1685     if (!SecCmsArrayIsEmpty((void **)signerinfo->authAttr) &&
1686         (attr = SecCmsAttributeArrayFindAttrByOidTag(signerinfo->authAttr,
1687                                                      SEC_OID_MS_SMIME_ENCRYPTION_KEY_PREFERENCE, PR_TRUE)) != NULL)
1688     { /* we have a MS_SMIME_ENCRYPTION_KEY_PREFERENCE attribute! Find the cert. */
1689         ekp = SecCmsAttributeGetValue(attr);
1690         if (ekp == NULL)
1691             return NULL;
1692         cert = SecSMIMEGetCertFromEncryptionKeyPreference(keychainOrArray, rawCerts, ekp);
1693     }
1694     return cert;
1695 }
1696
1697 /*
1698  * XXXX the following needs to be done in the S/MIME layer code
1699  * after signature of a signerinfo is verified
1700  */
1701 OSStatus
1702 SecCmsSignerInfoSaveSMIMEProfile(SecCmsSignerInfoRef signerinfo)
1703 {
1704     SecCertificateRef cert = NULL;
1705     CSSM_DATA_PTR profile = NULL;
1706     SecCmsAttribute *attr;
1707     CSSM_DATA_PTR utc_stime = NULL;
1708     CSSM_DATA_PTR ekp;
1709     int save_error;
1710     OSStatus rv;
1711     Boolean must_free_cert = PR_FALSE;
1712     OSStatus status;
1713     SecKeychainRef keychainOrArray;
1714
1715     status = SecKeychainCopyDefault(&keychainOrArray);
1716
1717     /* sanity check - see if verification status is ok (unverified does not count...) */
1718     if (signerinfo->verificationStatus != SecCmsVSGoodSignature)
1719         return SECFailure;
1720
1721     /* find preferred encryption cert */
1722     if (!SecCmsArrayIsEmpty((void **)signerinfo->authAttr) &&
1723         (attr = SecCmsAttributeArrayFindAttrByOidTag(signerinfo->authAttr,
1724                                SEC_OID_SMIME_ENCRYPTION_KEY_PREFERENCE, PR_TRUE)) != NULL)
1725     { /* we have a SMIME_ENCRYPTION_KEY_PREFERENCE attribute! */
1726         ekp = SecCmsAttributeGetValue(attr);
1727         if (ekp == NULL)
1728             return SECFailure;
1729
1730         /* we assume that all certs coming with the message have been imported to the */
1731         /* temporary database */
1732         cert = SecSMIMEGetCertFromEncryptionKeyPreference(keychainOrArray, NULL, ekp);
1733         if (cert == NULL)
1734             return SECFailure;
1735         must_free_cert = PR_TRUE;
1736     }
1737
1738     if (cert == NULL) {
1739         /* no preferred cert found?
1740          * find the cert the signerinfo is signed with instead */
1741         CFStringRef emailAddress=NULL;
1742
1743         cert = SecCmsSignerInfoGetSigningCertificate(signerinfo, keychainOrArray);
1744         if (cert == NULL)
1745             return SECFailure;
1746         if (SecCertificateGetEmailAddress(cert,&emailAddress))
1747             return SECFailure;
1748     }
1749
1750     /* verify this cert for encryption (has been verified for signing so far) */    /* don't verify this cert for encryption. It may just be a signing cert.
1751      * that's OK, we can still save the S/MIME profile. The encryption cert
1752      * should have already been saved */
1753 #ifdef notdef
1754     if (CERT_VerifyCert(keychainOrArray, cert, certUsageEmailRecipient, CFAbsoluteTimeGetCurrent(), NULL) != SECSuccess) {
1755         if (must_free_cert)
1756             CERT_DestroyCertificate(cert);
1757         return SECFailure;
1758     }
1759 #endif
1760
1761     /* XXX store encryption cert permanently? */
1762
1763     /*
1764      * Remember the current error set because we do not care about
1765      * anything set by the functions we are about to call.
1766      */
1767     save_error = PORT_GetError();
1768
1769     if (!SecCmsArrayIsEmpty((void **)signerinfo->authAttr)) {
1770         attr = SecCmsAttributeArrayFindAttrByOidTag(signerinfo->authAttr,
1771                                        SEC_OID_PKCS9_SMIME_CAPABILITIES,
1772                                        PR_TRUE);
1773         profile = SecCmsAttributeGetValue(attr);
1774         attr = SecCmsAttributeArrayFindAttrByOidTag(signerinfo->authAttr,
1775                                        SEC_OID_PKCS9_SIGNING_TIME,
1776                                        PR_TRUE);
1777         utc_stime = SecCmsAttributeGetValue(attr);
1778     }
1779
1780     rv = CERT_SaveSMimeProfile (cert, profile, utc_stime);
1781     if (must_free_cert)
1782         CERT_DestroyCertificate(cert);
1783
1784     /*
1785      * Restore the saved error in case the calls above set a new
1786      * one that we do not actually care about.
1787      */
1788     PORT_SetError (save_error);
1789
1790     return rv;
1791 }
1792
1793 /*
1794  * SecCmsSignerInfoIncludeCerts - set cert chain inclusion mode for this signer
1795  */
1796 OSStatus
1797 SecCmsSignerInfoIncludeCerts(SecCmsSignerInfoRef signerinfo, SecCmsCertChainMode cm, SECCertUsage usage)
1798 {
1799     if (signerinfo->cert == NULL) {
1800         return SECFailure;
1801     }
1802
1803     /* don't leak if we get called twice */
1804     if (signerinfo->certList != NULL) {
1805         CFRelease(signerinfo->certList);
1806         signerinfo->certList = NULL;
1807     }
1808
1809     switch (cm) {
1810     case SecCmsCMNone:
1811         signerinfo->certList = NULL;
1812         break;
1813     case SecCmsCMCertOnly:
1814         signerinfo->certList = CERT_CertListFromCert(signerinfo->cert);
1815         break;
1816     case SecCmsCMCertChain:
1817         signerinfo->certList = CERT_CertChainFromCert(signerinfo->cert, usage, PR_FALSE, PR_FALSE);
1818         break;
1819     case SecCmsCMCertChainWithRoot:
1820         signerinfo->certList = CERT_CertChainFromCert(signerinfo->cert, usage, PR_TRUE, PR_FALSE);
1821         break;
1822     case SecCmsCMCertChainWithRootOrFail:
1823         signerinfo->certList = CERT_CertChainFromCert(signerinfo->cert, usage, PR_TRUE, PR_TRUE);
1824     }
1825
1826     if (cm != SecCmsCMNone && signerinfo->certList == NULL) {
1827         return SECFailure;
1828     }
1829
1830     return SECSuccess;
1831 }