Security/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 <AssertMacros.h>
  57 #include <CoreServices/../Frameworks/CarbonCore.framework/Headers/MacErrors.h>
  58 #include <Security/SecPolicyPriv.h>
  59
  60 #include "tsaSupport.h"
  61 #include "tsaSupportPriv.h"
  62
  63 #define HIDIGIT(v) (((v) / 10) + '0')
  64 #define LODIGIT(v) (((v) % 10) + '0')
  65
  66 #define ISDIGIT(dig) (((dig) >= '0') && ((dig) <= '9'))
  67 #define CAPTURE(var,p,label)                              \
  68 {                                                         \
  69     if (!ISDIGIT((p)[0]) || !ISDIGIT((p)[1])) goto label; \
  70     (var) = ((p)[0] - '0') * 10 + ((p)[1] - '0');         \
  71 }
  72
  73 #ifndef NDEBUG
  74 #define SIGINFO_DEBUG   1
  75 #endif
  76
  77 #if     SIGINFO_DEBUG
  78 #define dprintf(args...)      printf(args)
  79 #else
  80 #define dprintf(args...)
  81 #endif
  82
  83 #if RELEASECOUNTDEBUG
  84 #define dprintfRC(args...)    dprintf(args)
  85 #else
  86 #define dprintfRC(args...)
  87 #endif
  88
  89 static OSStatus
  90 DER_UTCTimeToCFDate(const CSSM_DATA_PTR utcTime, CFAbsoluteTime *date)
  91 {
  92     CFGregorianDate gdate;
  93     char *string = (char *)utcTime->Data;
  94     long year, month, mday, hour, minute, second, hourOff, minOff;
  95     CFTimeZoneRef timeZone;
  96
  97     /* Verify time is formatted properly and capture information */
  98     second = 0;
  99     hourOff = 0;
 100     minOff = 0;
 101     CAPTURE(year,string+0,loser);
 102     if (year < 50) {
 103         /* ASSUME that year # is in the 2000's, not the 1900's */
 104         year += 100;
 105     }
 106     CAPTURE(month,string+2,loser);
 107     if ((month == 0) || (month > 12)) goto loser;
 108     CAPTURE(mday,string+4,loser);
 109     if ((mday == 0) || (mday > 31)) goto loser;
 110     CAPTURE(hour,string+6,loser);
 111     if (hour > 23) goto loser;
 112     CAPTURE(minute,string+8,loser);
 113     if (minute > 59) goto loser;
 114     if (ISDIGIT(string[10])) {
 115         CAPTURE(second,string+10,loser);
 116         if (second > 59) goto loser;
 117         string += 2;
 118     }
 119     if (string[10] == '+') {
 120         CAPTURE(hourOff,string+11,loser);
 121         if (hourOff > 23) goto loser;
 122         CAPTURE(minOff,string+13,loser);
 123         if (minOff > 59) goto loser;
 124     } else if (string[10] == '-') {
 125         CAPTURE(hourOff,string+11,loser);
 126         if (hourOff > 23) goto loser;
 127         hourOff = -hourOff;
 128         CAPTURE(minOff,string+13,loser);
 129         if (minOff > 59) goto loser;
 130         minOff = -minOff;
 131     } else if (string[10] != 'Z') {
 132         goto loser;
 133     }
 134
 135     gdate.year = (SInt32)(year + 1900);
 136     gdate.month = month;
 137     gdate.day = mday;
 138     gdate.hour = hour;
 139     gdate.minute = minute;
 140     gdate.second = second;
 141
 142     if (hourOff == 0 && minOff == 0)
 143         timeZone = NULL; /* GMT */
 144     else
 145     {
 146         timeZone = CFTimeZoneCreateWithTimeIntervalFromGMT(NULL, (hourOff * 60 + minOff) * 60);
 147     }
 148
 149     *date = CFGregorianDateGetAbsoluteTime(gdate, timeZone);
 150     if (timeZone)
 151         CFRelease(timeZone);
 152
 153     return SECSuccess;
 154
 155 loser:
 156     return SECFailure;
 157 }
 158
 159 static OSStatus
 160 DER_CFDateToUTCTime(CFAbsoluteTime date, CSSM_DATA_PTR utcTime)
 161 {
 162     CFGregorianDate gdate =  CFAbsoluteTimeGetGregorianDate(date, NULL /* GMT */);
 163     unsigned char *d;
 164     SInt8 second;
 165
 166     utcTime->Length = 13;
 167     utcTime->Data = d = PORT_Alloc(13);
 168     if (!utcTime->Data)
 169         return SECFailure;
 170
 171     /* UTC time does not handle the years before 1950 */
 172     if (gdate.year < 1950)
 173             return SECFailure;
 174
 175     /* remove the century since it's added to the year by the
 176        CFAbsoluteTimeGetGregorianDate routine, but is not needed for UTC time */
 177     gdate.year %= 100;
 178     second = gdate.second + 0.5;
 179
 180     d[0] = HIDIGIT(gdate.year);
 181     d[1] = LODIGIT(gdate.year);
 182     d[2] = HIDIGIT(gdate.month);
 183     d[3] = LODIGIT(gdate.month);
 184     d[4] = HIDIGIT(gdate.day);
 185     d[5] = LODIGIT(gdate.day);
 186     d[6] = HIDIGIT(gdate.hour);
 187     d[7] = LODIGIT(gdate.hour);
 188     d[8] = HIDIGIT(gdate.minute);
 189     d[9] = LODIGIT(gdate.minute);
 190     d[10] = HIDIGIT(second);
 191     d[11] = LODIGIT(second);
 192     d[12] = 'Z';
 193     return SECSuccess;
 194 }
 195
 196 /* =============================================================================
 197  * SIGNERINFO
 198  */
 199 SecCmsSignerInfoRef
 200 nss_cmssignerinfo_create(SecCmsMessageRef cmsg, SecCmsSignerIDSelector type, SecCertificateRef cert, CSSM_DATA_PTR subjKeyID, SecPublicKeyRef pubKey, SecPrivateKeyRef signingKey, SECOidTag digestalgtag);
 201
 202 SecCmsSignerInfoRef
 203 SecCmsSignerInfoCreateWithSubjKeyID(SecCmsMessageRef cmsg, CSSM_DATA_PTR subjKeyID, SecPublicKeyRef pubKey, SecPrivateKeyRef signingKey, SECOidTag digestalgtag)
 204 {
 205     return nss_cmssignerinfo_create(cmsg, SecCmsSignerIDSubjectKeyID, NULL, subjKeyID, pubKey, signingKey, digestalgtag);
 206 }
 207
 208 SecCmsSignerInfoRef
 209 SecCmsSignerInfoCreate(SecCmsMessageRef cmsg, SecIdentityRef identity, SECOidTag digestalgtag)
 210 {
 211     SecCmsSignerInfoRef signerInfo = NULL;
 212     SecCertificateRef cert = NULL;
 213     SecPrivateKeyRef signingKey = NULL;
 214
 215     if (SecIdentityCopyCertificate(identity, &cert))
 216         goto loser;
 217     if (SecIdentityCopyPrivateKey(identity, &signingKey))
 218         goto loser;
 219
 220     signerInfo = nss_cmssignerinfo_create(cmsg, SecCmsSignerIDIssuerSN, cert, NULL, NULL, signingKey, digestalgtag);
 221
 222 loser:
 223     if (cert)
 224         CFRelease(cert);
 225     if (signingKey)
 226         CFRelease(signingKey);
 227
 228     return signerInfo;
 229 }
 230
 231 SecCmsSignerInfoRef
 232 nss_cmssignerinfo_create(SecCmsMessageRef cmsg, SecCmsSignerIDSelector type, SecCertificateRef cert, CSSM_DATA_PTR subjKeyID, SecPublicKeyRef pubKey, SecPrivateKeyRef signingKey, SECOidTag digestalgtag)
 233 {
 234     void *mark;
 235     SecCmsSignerInfoRef signerinfo;
 236     int version;
 237     PLArenaPool *poolp;
 238
 239     poolp = cmsg->poolp;
 240
 241     mark = PORT_ArenaMark(poolp);
 242
 243     signerinfo = (SecCmsSignerInfoRef)PORT_ArenaZAlloc(poolp, sizeof(SecCmsSignerInfo));
 244     if (signerinfo == NULL) {
 245         PORT_ArenaRelease(poolp, mark);
 246         return NULL;
 247     }
 248
 249
 250     signerinfo->cmsg = cmsg;
 251
 252     switch(type) {
 253     case SecCmsSignerIDIssuerSN:
 254         signerinfo->signerIdentifier.identifierType = SecCmsSignerIDIssuerSN;
 255         if ((signerinfo->cert = CERT_DupCertificate(cert)) == NULL)
 256             goto loser;
 257         if ((signerinfo->signerIdentifier.id.issuerAndSN = CERT_GetCertIssuerAndSN(poolp, cert)) == NULL)
 258             goto loser;
 259         dprintfRC("nss_cmssignerinfo_create: SecCmsSignerIDIssuerSN: cert.rc %d\n",
 260             (int)CFGetRetainCount(signerinfo->cert));
 261         break;
 262     case SecCmsSignerIDSubjectKeyID:
 263         signerinfo->signerIdentifier.identifierType = SecCmsSignerIDSubjectKeyID;
 264         PORT_Assert(subjKeyID);
 265         if (!subjKeyID)
 266             goto loser;
 267         signerinfo->signerIdentifier.id.subjectKeyID = PORT_ArenaNew(poolp, CSSM_DATA);
 268         SECITEM_CopyItem(poolp, signerinfo->signerIdentifier.id.subjectKeyID,
 269                          subjKeyID);
 270         signerinfo->pubKey = SECKEY_CopyPublicKey(pubKey);
 271         if (!signerinfo->pubKey)
 272             goto loser;
 273         break;
 274     default:
 275         goto loser;
 276     }
 277
 278     if (!signingKey)
 279         goto loser;
 280
 281     signerinfo->signingKey = SECKEY_CopyPrivateKey(signingKey);
 282     if (!signerinfo->signingKey)
 283         goto loser;
 284
 285     /* set version right now */
 286     version = SEC_CMS_SIGNER_INFO_VERSION_ISSUERSN;
 287     /* RFC2630 5.3 "version is the syntax version number. If the .... " */
 288     if (signerinfo->signerIdentifier.identifierType == SecCmsSignerIDSubjectKeyID)
 289         version = SEC_CMS_SIGNER_INFO_VERSION_SUBJKEY;
 290     (void)SEC_ASN1EncodeInteger(poolp, &(signerinfo->version), (long)version);
 291
 292     if (SECOID_SetAlgorithmID(poolp, &signerinfo->digestAlg, digestalgtag, NULL) != SECSuccess)
 293         goto loser;
 294
 295     PORT_ArenaUnmark(poolp, mark);
 296     return signerinfo;
 297
 298 loser:
 299     PORT_ArenaRelease(poolp, mark);
 300     return NULL;
 301 }
 302
 303 /*
 304  * SecCmsSignerInfoDestroy - destroy a SignerInfo data structure
 305  */
 306 void
 307 SecCmsSignerInfoDestroy(SecCmsSignerInfoRef si)
 308 {
 309     if (si->cert != NULL) {
 310         dprintfRC("SecCmsSignerInfoDestroy top: certp %p cert.rc %d\n",
 311             si->cert, (int)CFGetRetainCount(si->cert));
 312         CERT_DestroyCertificate(si->cert);
 313     }
 314     if (si->certList != NULL) {
 315         dprintfRC("SecCmsSignerInfoDestroy top: certList.rc %d\n",
 316             (int)CFGetRetainCount(si->certList));
 317         CFRelease(si->certList);
 318     }
 319     if (si->timestampCertList != NULL) {
 320         dprintfRC("SecCmsSignerInfoDestroy top: timestampCertList.rc %d\n",
 321             (int)CFGetRetainCount(si->timestampCertList));
 322         CFRelease(si->timestampCertList);
 323     }
 324     /* XXX storage ??? */
 325 }
 326
 327 /*
 328  * SecCmsSignerInfoSign - sign something
 329  *
 330  */
 331 OSStatus
 332 SecCmsSignerInfoSign(SecCmsSignerInfoRef signerinfo, CSSM_DATA_PTR digest, CSSM_DATA_PTR contentType)
 333 {
 334     SecCertificateRef cert;
 335     SecPrivateKeyRef privkey = NULL;
 336     SECOidTag digestalgtag;
 337     SECOidTag pubkAlgTag;
 338     CSSM_DATA signature = { 0 };
 339     OSStatus rv;
 340     PLArenaPool *poolp, *tmppoolp = NULL;
 341     const SECAlgorithmID *algID;
 342     SECAlgorithmID freeAlgID;
 343     //CERTSubjectPublicKeyInfo *spki;
 344
 345     PORT_Assert (digest != NULL);
 346
 347     poolp = signerinfo->cmsg->poolp;
 348
 349     switch (signerinfo->signerIdentifier.identifierType) {
 350     case SecCmsSignerIDIssuerSN:
 351         privkey = signerinfo->signingKey;
 352         signerinfo->signingKey = NULL;
 353         cert = signerinfo->cert;
 354         if (SecCertificateGetAlgorithmID(cert,&algID)) {
 355             PORT_SetError(SEC_ERROR_INVALID_ALGORITHM);
 356             goto loser;
 357         }
 358         break;
 359     case SecCmsSignerIDSubjectKeyID:
 360         privkey = signerinfo->signingKey;
 361         signerinfo->signingKey = NULL;
 362 #if 0
 363         spki = SECKEY_CreateSubjectPublicKeyInfo(signerinfo->pubKey);
 364         SECKEY_DestroyPublicKey(signerinfo->pubKey);
 365         signerinfo->pubKey = NULL;
 366         SECOID_CopyAlgorithmID(NULL, &freeAlgID, &spki->algorithm);
 367         SECKEY_DestroySubjectPublicKeyInfo(spki);
 368         algID = &freeAlgID;
 369 #else
 370         if (SecKeyGetAlgorithmID(signerinfo->pubKey,&algID)) {
 371             PORT_SetError(SEC_ERROR_INVALID_ALGORITHM);
 372             goto loser;
 373         }
 374         CFRelease(signerinfo->pubKey);
 375         signerinfo->pubKey = NULL;
 376 #endif
 377         break;
 378     default:
 379         PORT_SetError(SEC_ERROR_UNSUPPORTED_MESSAGE_TYPE);
 380         goto loser;
 381     }
 382     digestalgtag = SecCmsSignerInfoGetDigestAlgTag(signerinfo);
 383     /*
 384      * XXX I think there should be a cert-level interface for this,
 385      * so that I do not have to know about subjectPublicKeyInfo...
 386      */
 387     pubkAlgTag = SECOID_GetAlgorithmTag(algID);
 388     if (signerinfo->signerIdentifier.identifierType == SecCmsSignerIDSubjectKeyID) {
 389       SECOID_DestroyAlgorithmID(&freeAlgID, PR_FALSE);
 390     }
 391
 392 #if 0
 393     // @@@ Not yet
 394     /* Fortezza MISSI have weird signature formats.
 395      * Map them to standard DSA formats
 396      */
 397     pubkAlgTag = PK11_FortezzaMapSig(pubkAlgTag);
 398 #endif
 399
 400     if (signerinfo->authAttr != NULL) {
 401         CSSM_DATA encoded_attrs;
 402
 403         /* find and fill in the message digest attribute. */
 404         rv = SecCmsAttributeArraySetAttr(poolp, &(signerinfo->authAttr),
 405                                SEC_OID_PKCS9_MESSAGE_DIGEST, digest, PR_FALSE);
 406         if (rv != SECSuccess)
 407             goto loser;
 408
 409         if (contentType != NULL) {
 410             /* if the caller wants us to, find and fill in the content type attribute. */
 411             rv = SecCmsAttributeArraySetAttr(poolp, &(signerinfo->authAttr),
 412                             SEC_OID_PKCS9_CONTENT_TYPE, contentType, PR_FALSE);
 413             if (rv != SECSuccess)
 414                 goto loser;
 415         }
 416
 417         if ((tmppoolp = PORT_NewArena (1024)) == NULL) {
 418             PORT_SetError(SEC_ERROR_NO_MEMORY);
 419             goto loser;
 420         }
 421
 422         /*
 423          * Before encoding, reorder the attributes so that when they
 424          * are encoded, they will be conforming DER, which is required
 425          * to have a specific order and that is what must be used for
 426          * the hash/signature.  We do this here, rather than building
 427          * it into EncodeAttributes, because we do not want to do
 428          * such reordering on incoming messages (which also uses
 429          * EncodeAttributes) or our old signatures (and other "broken"
 430          * implementations) will not verify.  So, we want to guarantee
 431          * that we send out good DER encodings of attributes, but not
 432          * to expect to receive them.
 433          */
 434         if (SecCmsAttributeArrayReorder(signerinfo->authAttr) != SECSuccess)
 435             goto loser;
 436
 437         encoded_attrs.Data = NULL;
 438         encoded_attrs.Length = 0;
 439         if (SecCmsAttributeArrayEncode(tmppoolp, &(signerinfo->authAttr),
 440                         &encoded_attrs) == NULL)
 441             goto loser;
 442
 443         rv = SEC_SignData(&signature, encoded_attrs.Data, (int)encoded_attrs.Length,
 444                           privkey, digestalgtag, pubkAlgTag);
 445         PORT_FreeArena(tmppoolp, PR_FALSE); /* awkward memory management :-( */
 446         tmppoolp = 0;
 447     } else {
 448         rv = SGN_Digest(privkey, digestalgtag, pubkAlgTag, &signature, digest);
 449     }
 450     SECKEY_DestroyPrivateKey(privkey);
 451     privkey = NULL;
 452
 453     if (rv != SECSuccess)
 454         goto loser;
 455
 456     if (SECITEM_CopyItem(poolp, &(signerinfo->encDigest), &signature)
 457           != SECSuccess)
 458         goto loser;
 459
 460     SECITEM_FreeItem(&signature, PR_FALSE);
 461
 462     if(pubkAlgTag == SEC_OID_EC_PUBLIC_KEY) {
 463         /*
 464          * RFC 3278 section section 2.1.1 states that the signatureAlgorithm
 465          * field contains the full ecdsa-with-SHA1 OID, not plain old ecPublicKey
 466          * as would appear in other forms of signed datas. However Microsoft doesn't
 467          * do this, it puts ecPublicKey there, and if we put ecdsa-with-SHA1 there,
 468          * MS can't verify - presumably because it takes the digest of the digest
 469          * before feeding it to ECDSA.
 470          * We handle this with a preference; default if it's not there is
 471          * "Microsoft compatibility mode".
 472          */
 473         if(!SecCmsMsEcdsaCompatMode()) {
 474             pubkAlgTag = SEC_OID_ECDSA_WithSHA1;
 475         }
 476         /* else violating the spec for compatibility */
 477     }
 478
 479     if (SECOID_SetAlgorithmID(poolp, &(signerinfo->digestEncAlg), pubkAlgTag,
 480                               NULL) != SECSuccess)
 481         goto loser;
 482
 483     return SECSuccess;
 484
 485 loser:
 486     if (signature.Length != 0)
 487         SECITEM_FreeItem (&signature, PR_FALSE);
 488     if (privkey)
 489         SECKEY_DestroyPrivateKey(privkey);
 490     if((algID != NULL) & (algID != &freeAlgID)) {
 491         /* this is dicey - this was actually mallocd by either SecCertificate or
 492          * by SecKey...it all boils down to a free() in the end though. */
 493         SECOID_DestroyAlgorithmID((SECAlgorithmID *)algID, PR_FALSE);
 494     }
 495     if (tmppoolp)
 496         PORT_FreeArena(tmppoolp, PR_FALSE);
 497     return SECFailure;
 498 }
 499
 500 OSStatus
 501 SecCmsSignerInfoVerifyCertificate(SecCmsSignerInfoRef signerinfo, SecKeychainRef keychainOrArray,
 502                                   CFTypeRef policies, SecTrustRef *trustRef)
 503 {
 504     SecCertificateRef cert;
 505     CFAbsoluteTime stime;
 506     OSStatus rv;
 507     CSSM_DATA_PTR *otherCerts;
 508
 509     if ((cert = SecCmsSignerInfoGetSigningCertificate(signerinfo, keychainOrArray)) == NULL) {
 510         dprintf("SecCmsSignerInfoVerifyCertificate: no signing cert\n");
 511         signerinfo->verificationStatus = SecCmsVSSigningCertNotFound;
 512         return SECFailure;
 513     }
 514
 515     /*
 516      * Get and convert the signing time; if available, it will be used
 517      * both on the cert verification and for importing the sender
 518      * email profile.
 519      */
 520     CFTypeRef timeStampPolicies=SecPolicyCreateAppleTimeStampingAndRevocationPolicies(policies);
 521     if (SecCmsSignerInfoGetTimestampTimeWithPolicy(signerinfo, timeStampPolicies, &stime) != SECSuccess)
 522         if (SecCmsSignerInfoGetSigningTime(signerinfo, &stime) != SECSuccess)
 523             stime = CFAbsoluteTimeGetCurrent();
 524     CFReleaseSafe(timeStampPolicies);
 525
 526     rv = SecCmsSignedDataRawCerts(signerinfo->sigd, &otherCerts);
 527     if(rv) {
 528         return rv;
 529     }
 530     rv = CERT_VerifyCert(keychainOrArray, cert, otherCerts, policies, stime, trustRef);
 531     dprintfRC("SecCmsSignerInfoVerifyCertificate after vfy: certp %p cert.rc %d\n",
 532             cert, (int)CFGetRetainCount(cert));
 533     if (rv || !trustRef)
 534     {
 535         if (PORT_GetError() == SEC_ERROR_UNTRUSTED_CERT)
 536         {
 537             /* Signature or digest level verificationStatus errors should supercede certificate level errors, so only change the verificationStatus if the status was GoodSignature. */
 538             if (signerinfo->verificationStatus == SecCmsVSGoodSignature)
 539                 signerinfo->verificationStatus = SecCmsVSSigningCertNotTrusted;
 540         }
 541     }
 542     /* FIXME isn't this leaking the cert? */
 543     dprintf("SecCmsSignerInfoVerifyCertificate: CertVerify rtn %d\n", (int)rv);
 544     return rv;
 545 }
 546
 547 static void debugShowSigningCertificate(SecCmsSignerInfoRef signerinfo)
 548 {
 549 #if SIGINFO_DEBUG
 550     CFStringRef cn = SecCmsSignerInfoGetSignerCommonName(signerinfo);
 551     if (cn)
 552     {
 553         char *ccn = cfStringToChar(cn);
 554         if (ccn)
 555         {
 556             dprintf("SecCmsSignerInfoVerify: cn: %s\n", ccn);
 557             free(ccn);
 558         }
 559         CFRelease(cn);
 560     }
 561 #endif
 562 }
 563
 564 /*
 565  * SecCmsSignerInfoVerify - verify the signature of a single SignerInfo
 566  *
 567  * Just verifies the signature. The assumption is that verification of the certificate
 568  * is done already.
 569  */
 570 OSStatus
 571 SecCmsSignerInfoVerify(SecCmsSignerInfoRef signerinfo, CSSM_DATA_PTR digest, CSSM_DATA_PTR contentType)
 572 {
 573     return SecCmsSignerInfoVerifyWithPolicy(signerinfo,NULL, digest,contentType);
 574 }
 575
 576 OSStatus
 577 SecCmsSignerInfoVerifyWithPolicy(SecCmsSignerInfoRef signerinfo,CFTypeRef timeStampPolicy, CSSM_DATA_PTR digest, CSSM_DATA_PTR contentType)
 578 {
 579     SecPublicKeyRef publickey = NULL;
 580     SecCmsAttribute *attr;
 581     CSSM_DATA encoded_attrs;
 582     SecCertificateRef cert;
 583     SecCmsVerificationStatus vs = SecCmsVSUnverified;
 584     PLArenaPool *poolp;
 585     SECOidTag digestAlgTag, digestEncAlgTag;
 586
 587     if (signerinfo == NULL)
 588         return SECFailure;
 589
 590     /* SecCmsSignerInfoGetSigningCertificate will fail if 2nd parm is NULL and */
 591     /* cert has not been verified */
 592     if ((cert = SecCmsSignerInfoGetSigningCertificate(signerinfo, NULL)) == NULL) {
 593         dprintf("SecCmsSignerInfoVerify: no signing cert\n");
 594         vs = SecCmsVSSigningCertNotFound;
 595         goto loser;
 596     }
 597
 598     dprintfRC("SecCmsSignerInfoVerify top: cert %p cert.rc %d\n", cert, (int)CFGetRetainCount(cert));
 599
 600     debugShowSigningCertificate(signerinfo);
 601
 602     if (SecCertificateCopyPublicKey(cert, &publickey)) {
 603         vs = SecCmsVSProcessingError;
 604         goto loser;
 605     }
 606
 607     digestAlgTag = SECOID_GetAlgorithmTag(&(signerinfo->digestAlg));
 608     digestEncAlgTag = SECOID_GetAlgorithmTag(&(signerinfo->digestEncAlg));
 609
 610     /*
 611      * Gross hack necessitated by RFC 3278 section 2.1.1, which states
 612      * that the signature algorithm (here, digestEncAlg) contains ecdsa_with-SHA1,
 613      * *not* (as in all other algorithms) the raw signature algorithm, e.g.
 614      * pkcs1RSAEncryption.
 615      */
 616     if(digestEncAlgTag == SEC_OID_ECDSA_WithSHA1) {
 617         digestEncAlgTag = SEC_OID_EC_PUBLIC_KEY;
 618     }
 619
 620     if (!SecCmsArrayIsEmpty((void **)signerinfo->authAttr)) {
 621         if (contentType) {
 622             /*
 623              * Check content type
 624              *
 625              * RFC2630 sez that if there are any authenticated attributes,
 626              * then there must be one for content type which matches the
 627              * content type of the content being signed, and there must
 628              * be one for message digest which matches our message digest.
 629              * So check these things first.
 630              */
 631             if ((attr = SecCmsAttributeArrayFindAttrByOidTag(signerinfo->authAttr,
 632                                         SEC_OID_PKCS9_CONTENT_TYPE, PR_TRUE)) == NULL)
 633             {
 634                 vs = SecCmsVSMalformedSignature;
 635                 goto loser;
 636             }
 637
 638             if (SecCmsAttributeCompareValue(attr, contentType) == PR_FALSE) {
 639                 vs = SecCmsVSMalformedSignature;
 640                 goto loser;
 641             }
 642         }
 643
 644         /*
 645          * Check digest
 646          */
 647         if ((attr = SecCmsAttributeArrayFindAttrByOidTag(signerinfo->authAttr, SEC_OID_PKCS9_MESSAGE_DIGEST, PR_TRUE)) == NULL)
 648         {
 649             vs = SecCmsVSMalformedSignature;
 650             goto loser;
 651         }
 652         if (SecCmsAttributeCompareValue(attr, digest) == PR_FALSE) {
 653             vs = SecCmsVSDigestMismatch;
 654             goto loser;
 655         }
 656
 657         if ((poolp = PORT_NewArena (1024)) == NULL) {
 658             vs = SecCmsVSProcessingError;
 659             goto loser;
 660         }
 661
 662         /*
 663          * Check signature
 664          *
 665          * The signature is based on a digest of the DER-encoded authenticated
 666          * attributes.  So, first we encode and then we digest/verify.
 667          * we trust the decoder to have the attributes in the right (sorted) order
 668          */
 669         encoded_attrs.Data = NULL;
 670         encoded_attrs.Length = 0;
 671
 672         if (SecCmsAttributeArrayEncode(poolp, &(signerinfo->authAttr), &encoded_attrs) == NULL ||
 673                 encoded_attrs.Data == NULL || encoded_attrs.Length == 0)
 674         {
 675             vs = SecCmsVSProcessingError;
 676             goto loser;
 677         }
 678
 679         vs = (VFY_VerifyData (encoded_attrs.Data, (int)encoded_attrs.Length,
 680                         publickey, &(signerinfo->encDigest),
 681                         digestAlgTag, digestEncAlgTag,
 682                         signerinfo->cmsg->pwfn_arg) != SECSuccess) ? SecCmsVSBadSignature : SecCmsVSGoodSignature;
 683
 684         dprintf("VFY_VerifyData (authenticated attributes): %s\n",
 685             (vs == SecCmsVSGoodSignature)?"SecCmsVSGoodSignature":"SecCmsVSBadSignature");
 686
 687         PORT_FreeArena(poolp, PR_FALSE);        /* awkward memory management :-( */
 688
 689     } else {
 690         CSSM_DATA_PTR sig;
 691
 692         /* No authenticated attributes. The signature is based on the plain message digest. */
 693         sig = &(signerinfo->encDigest);
 694         if (sig->Length == 0)
 695             goto loser;
 696
 697         vs = (VFY_VerifyDigest(digest, publickey, sig,
 698                         digestAlgTag, digestEncAlgTag,
 699                         signerinfo->cmsg->pwfn_arg) != SECSuccess) ? SecCmsVSBadSignature : SecCmsVSGoodSignature;
 700
 701         dprintf("VFY_VerifyData (plain message digest): %s\n",
 702             (vs == SecCmsVSGoodSignature)?"SecCmsVSGoodSignature":"SecCmsVSBadSignature");
 703     }
 704
 705     if (!SecCmsArrayIsEmpty((void **)signerinfo->unAuthAttr))
 706     {
 707         dprintf("found an unAuthAttr\n");
 708         OSStatus rux = SecCmsSignerInfoVerifyUnAuthAttrsWithPolicy(signerinfo,timeStampPolicy);
 709         dprintf("SecCmsSignerInfoVerifyUnAuthAttrs Status: %ld\n", (long)rux);
 710         if (rux)
 711             goto loser;
 712     }
 713
 714     if (vs == SecCmsVSBadSignature) {
 715         /*
 716          * XXX Change the generic error into our specific one, because
 717          * in that case we get a better explanation out of the Security
 718          * Advisor.  This is really a bug in our error strings (the
 719          * "generic" error has a lousy/wrong message associated with it
 720          * which assumes the signature verification was done for the
 721          * purposes of checking the issuer signature on a certificate)
 722          * but this is at least an easy workaround and/or in the
 723          * Security Advisor, which specifically checks for the error
 724          * SEC_ERROR_PKCS7_BAD_SIGNATURE and gives more explanation
 725          * in that case but does not similarly check for
 726          * SEC_ERROR_BAD_SIGNATURE.  It probably should, but then would
 727          * probably say the wrong thing in the case that it *was* the
 728          * certificate signature check that failed during the cert
 729          * verification done above.  Our error handling is really a mess.
 730          */
 731         if (PORT_GetError() == SEC_ERROR_BAD_SIGNATURE)
 732             PORT_SetError(SEC_ERROR_PKCS7_BAD_SIGNATURE);
 733     }
 734
 735     if (publickey != NULL)
 736         CFRelease(publickey);
 737
 738     signerinfo->verificationStatus = vs;
 739     dprintfRC("SecCmsSignerInfoVerify end: cerp %p cert.rc %d\n",
 740             cert, (int)CFGetRetainCount(cert));
 741
 742     dprintf("verificationStatus: %d\n", vs);
 743
 744     return (vs == SecCmsVSGoodSignature) ? SECSuccess : SECFailure;
 745
 746 loser:
 747     if (publickey != NULL)
 748         SECKEY_DestroyPublicKey (publickey);
 749
 750     dprintf("verificationStatus2: %d\n", vs);
 751     signerinfo->verificationStatus = vs;
 752
 753     PORT_SetError (SEC_ERROR_PKCS7_BAD_SIGNATURE);
 754     return SECFailure;
 755 }
 756
 757 OSStatus
 758 SecCmsSignerInfoVerifyUnAuthAttrs(SecCmsSignerInfoRef signerinfo) {
 759     return SecCmsSignerInfoVerifyUnAuthAttrsWithPolicy(signerinfo, NULL);
 760 }
 761
 762 OSStatus
 763 SecCmsSignerInfoVerifyUnAuthAttrsWithPolicy(SecCmsSignerInfoRef signerinfo,CFTypeRef timeStampPolicy)
 764 {
 765     /*
 766         unAuthAttr is an array of attributes; we expect to
 767         see just one: the timestamp blob. If we have an unAuthAttr,
 768         but don't see a timestamp, return an error since we have
 769         no other cases where this would be present.
 770     */
 771
 772     SecCmsAttribute *attr = NULL;
 773     OSStatus status = SECFailure;
 774
 775     require(signerinfo, xit);
 776     attr = SecCmsAttributeArrayFindAttrByOidTag(signerinfo->unAuthAttr,
 777         SEC_OID_PKCS9_TIMESTAMP_TOKEN, PR_TRUE);
 778     if (attr == NULL)
 779     {
 780         status = errSecTimestampMissing;
 781         goto xit;
 782     }
 783
 784     dprintf("found an id-ct-TSTInfo\n");
 785     // Don't check the nonce in this case
 786     status = decodeTimeStampTokenWithPolicy(signerinfo, timeStampPolicy, (attr->values)[0], &signerinfo->encDigest, 0);
 787 xit:
 788     return status;
 789 }
 790
 791 CSSM_DATA *
 792 SecCmsSignerInfoGetEncDigest(SecCmsSignerInfoRef signerinfo)
 793 {
 794     return &signerinfo->encDigest;
 795 }
 796
 797 SecCmsVerificationStatus
 798 SecCmsSignerInfoGetVerificationStatus(SecCmsSignerInfoRef signerinfo)
 799 {
 800     return signerinfo->verificationStatus;
 801 }
 802
 803 SECOidData *
 804 SecCmsSignerInfoGetDigestAlg(SecCmsSignerInfoRef signerinfo)
 805 {
 806     return SECOID_FindOID (&(signerinfo->digestAlg.algorithm));
 807 }
 808
 809 SECOidTag
 810 SecCmsSignerInfoGetDigestAlgTag(SecCmsSignerInfoRef signerinfo)
 811 {
 812     SECOidData *algdata;
 813
 814     algdata = SECOID_FindOID (&(signerinfo->digestAlg.algorithm));
 815     if (algdata != NULL)
 816         return algdata->offset;
 817     else
 818         return SEC_OID_UNKNOWN;
 819 }
 820
 821 CFArrayRef
 822 SecCmsSignerInfoGetCertList(SecCmsSignerInfoRef signerinfo)
 823 {
 824     dprintfRC("SecCmsSignerInfoGetCertList: certList.rc %d\n",
 825             (int)CFGetRetainCount(signerinfo->certList));
 826     return signerinfo->certList;
 827 }
 828
 829 CFArrayRef
 830 SecCmsSignerInfoGetTimestampCertList(SecCmsSignerInfoRef signerinfo)
 831 {
 832     dprintfRC("SecCmsSignerInfoGetCertList: timestampCertList.rc %d\n",
 833             (int)CFGetRetainCount(signerinfo->timestampCertList));
 834     return signerinfo->timestampCertList;
 835 }
 836
 837
 838
 839 int
 840 SecCmsSignerInfoGetVersion(SecCmsSignerInfoRef signerinfo)
 841 {
 842     unsigned long version;
 843
 844     /* always take apart the CSSM_DATA */
 845     if (SEC_ASN1DecodeInteger(&(signerinfo->version), &version) != SECSuccess)
 846         return 0;
 847     else
 848         return (int)version;
 849 }
 850
 851 /*
 852  * SecCmsSignerInfoGetSigningTime - return the signing time,
 853  *                                    in UTCTime format, of a CMS signerInfo.
 854  *
 855  * sinfo - signerInfo data for this signer
 856  *
 857  * Returns a pointer to XXXX (what?)
 858  * A return value of NULL is an error.
 859  */
 860 OSStatus
 861 SecCmsSignerInfoGetSigningTime(SecCmsSignerInfoRef sinfo, CFAbsoluteTime *stime)
 862 {
 863     SecCmsAttribute *attr;
 864     CSSM_DATA_PTR value;
 865
 866     if (sinfo == NULL)
 867         return paramErr;
 868
 869     if (sinfo->signingTime != 0) {
 870         *stime = sinfo->signingTime;    /* cached copy */
 871         return SECSuccess;
 872     }
 873
 874     attr = SecCmsAttributeArrayFindAttrByOidTag(sinfo->authAttr, SEC_OID_PKCS9_SIGNING_TIME, PR_TRUE);
 875     /* XXXX multi-valued attributes NIH */
 876     if (attr == NULL || (value = SecCmsAttributeGetValue(attr)) == NULL)
 877         return errSecSigningTimeMissing;
 878     if (DER_UTCTimeToCFDate(value, stime) != SECSuccess)
 879         return errSecSigningTimeMissing;
 880     sinfo->signingTime = *stime;        /* make cached copy */
 881     return SECSuccess;
 882 }
 883
 884 OSStatus
 885 SecCmsSignerInfoGetTimestampTime(SecCmsSignerInfoRef sinfo, CFAbsoluteTime *stime)
 886 {
 887     return SecCmsSignerInfoGetTimestampTimeWithPolicy(sinfo, NULL, stime);
 888 }
 889
 890 OSStatus
 891 SecCmsSignerInfoGetTimestampTimeWithPolicy(SecCmsSignerInfoRef sinfo, CFTypeRef timeStampPolicy, CFAbsoluteTime *stime)
 892 {
 893     OSStatus status = paramErr;
 894
 895     require(sinfo && stime, xit);
 896
 897     if (sinfo->timestampTime != 0)
 898     {
 899         *stime = sinfo->timestampTime;  /* cached copy */
 900         return noErr;
 901     }
 902
 903     // A bit heavyweight if haven't already called verify
 904     status = SecCmsSignerInfoVerifyUnAuthAttrsWithPolicy(sinfo,timeStampPolicy);
 905     *stime = sinfo->timestampTime;
 906 xit:
 907     return status;
 908 }
 909
 910 /*
 911  * Return the signing cert of a CMS signerInfo.
 912  *
 913  * the certs in the enclosing SignedData must have been imported already
 914  */
 915 SecCertificateRef
 916 SecCmsSignerInfoGetSigningCertificate(SecCmsSignerInfoRef signerinfo, SecKeychainRef keychainOrArray)
 917 {
 918     SecCertificateRef cert;
 919     SecCmsSignerIdentifier *sid;
 920     OSStatus ortn;
 921     CSSM_DATA_PTR *rawCerts;
 922
 923     if (signerinfo->cert != NULL) {
 924         dprintfRC("SecCmsSignerInfoGetSigningCertificate top: cert %p cert.rc %d\n",
 925             signerinfo->cert, (int)CFGetRetainCount(signerinfo->cert));
 926         return signerinfo->cert;
 927     }
 928     ortn = SecCmsSignedDataRawCerts(signerinfo->sigd, &rawCerts);
 929     if(ortn) {
 930         return NULL;
 931     }
 932     dprintf("SecCmsSignerInfoGetSigningCertificate: numRawCerts %d\n",
 933         SecCmsArrayCount((void **)rawCerts));
 934
 935     /*
 936      * This cert will also need to be freed, but since we save it
 937      * in signerinfo for later, we do not want to destroy it when
 938      * we leave this function -- we let the clean-up of the entire
 939      * cinfo structure later do the destroy of this cert.
 940      */
 941     sid = &signerinfo->signerIdentifier;
 942     switch (sid->identifierType) {
 943     case SecCmsSignerIDIssuerSN:
 944         cert = CERT_FindCertByIssuerAndSN(keychainOrArray, rawCerts, signerinfo->cmsg->poolp,
 945             sid->id.issuerAndSN);
 946         break;
 947     case SecCmsSignerIDSubjectKeyID:
 948         cert = CERT_FindCertBySubjectKeyID(keychainOrArray, rawCerts, sid->id.subjectKeyID);
 949         break;
 950     default:
 951         cert = NULL;
 952         break;
 953     }
 954
 955     /* cert can be NULL at that point */
 956     signerinfo->cert = cert;    /* earmark it */
 957     dprintfRC("SecCmsSignerInfoGetSigningCertificate end: certp %p cert.rc %d\n",
 958             signerinfo->cert, (int)CFGetRetainCount(signerinfo->cert));
 959
 960     return cert;
 961 }
 962
 963 /*
 964  * SecCmsSignerInfoGetSignerCommonName - return the common name of the signer
 965  *
 966  * sinfo - signerInfo data for this signer
 967  *
 968  * Returns a CFStringRef containing the common name of the signer.
 969  * A return value of NULL is an error.
 970  */
 971 CFStringRef
 972 SecCmsSignerInfoGetSignerCommonName(SecCmsSignerInfoRef sinfo)
 973 {
 974     SecCertificateRef signercert;
 975     CFStringRef commonName = NULL;
 976
 977     /* will fail if cert is not verified */
 978     if ((signercert = SecCmsSignerInfoGetSigningCertificate(sinfo, NULL)) == NULL)
 979         return NULL;
 980
 981     SecCertificateCopyCommonName(signercert, &commonName);
 982
 983     return commonName;
 984 }
 985
 986 /*
 987  * SecCmsSignerInfoGetSignerEmailAddress - return the email address of the signer
 988  *
 989  * sinfo - signerInfo data for this signer
 990  *
 991  * Returns a CFStringRef containing the name of the signer.
 992  * A return value of NULL is an error.
 993  */
 994 CFStringRef
 995 SecCmsSignerInfoGetSignerEmailAddress(SecCmsSignerInfoRef sinfo)
 996 {
 997     SecCertificateRef signercert;
 998     CFStringRef emailAddress = NULL;
 999
1000     if ((signercert = SecCmsSignerInfoGetSigningCertificate(sinfo, NULL)) == NULL)
1001         return NULL;
1002
1003     SecCertificateGetEmailAddress(signercert, &emailAddress);
1004
1005     return emailAddress;
1006 }
1007
1008
1009 /*
1010  * SecCmsSignerInfoAddAuthAttr - add an attribute to the
1011  * authenticated (i.e. signed) attributes of "signerinfo".
1012  */
1013 OSStatus
1014 SecCmsSignerInfoAddAuthAttr(SecCmsSignerInfoRef signerinfo, SecCmsAttribute *attr)
1015 {
1016     return SecCmsAttributeArrayAddAttr(signerinfo->cmsg->poolp, &(signerinfo->authAttr), attr);
1017 }
1018
1019 /*
1020  * SecCmsSignerInfoAddUnauthAttr - add an attribute to the
1021  * unauthenticated attributes of "signerinfo".
1022  */
1023 OSStatus
1024 SecCmsSignerInfoAddUnauthAttr(SecCmsSignerInfoRef signerinfo, SecCmsAttribute *attr)
1025 {
1026     return SecCmsAttributeArrayAddAttr(signerinfo->cmsg->poolp, &(signerinfo->unAuthAttr), attr);
1027 }
1028
1029 /*
1030  * SecCmsSignerInfoAddSigningTime - add the signing time to the
1031  * authenticated (i.e. signed) attributes of "signerinfo".
1032  *
1033  * This is expected to be included in outgoing signed
1034  * messages for email (S/MIME) but is likely useful in other situations.
1035  *
1036  * This should only be added once; a second call will do nothing.
1037  *
1038  * XXX This will probably just shove the current time into "signerinfo"
1039  * but it will not actually get signed until the entire item is
1040  * processed for encoding.  Is this (expected to be small) delay okay?
1041  */
1042 OSStatus
1043 SecCmsSignerInfoAddSigningTime(SecCmsSignerInfoRef signerinfo, CFAbsoluteTime t)
1044 {
1045     SecCmsAttribute *attr;
1046     CSSM_DATA stime;
1047     void *mark;
1048     PLArenaPool *poolp;
1049
1050     poolp = signerinfo->cmsg->poolp;
1051
1052     mark = PORT_ArenaMark(poolp);
1053
1054     /* create new signing time attribute */
1055     if (DER_CFDateToUTCTime(t, &stime) != SECSuccess)
1056         goto loser;
1057
1058     if ((attr = SecCmsAttributeCreate(poolp, SEC_OID_PKCS9_SIGNING_TIME, &stime, PR_FALSE)) == NULL) {
1059         SECITEM_FreeItem (&stime, PR_FALSE);
1060         goto loser;
1061     }
1062
1063     SECITEM_FreeItem (&stime, PR_FALSE);
1064
1065     if (SecCmsSignerInfoAddAuthAttr(signerinfo, attr) != SECSuccess)
1066         goto loser;
1067
1068     PORT_ArenaUnmark (poolp, mark);
1069
1070     return SECSuccess;
1071
1072 loser:
1073     PORT_ArenaRelease (poolp, mark);
1074     return SECFailure;
1075 }
1076
1077 /*
1078  * SecCmsSignerInfoAddSMIMECaps - add a SMIMECapabilities attribute to the
1079  * authenticated (i.e. signed) attributes of "signerinfo".
1080  *
1081  * This is expected to be included in outgoing signed
1082  * messages for email (S/MIME).
1083  */
1084 OSStatus
1085 SecCmsSignerInfoAddSMIMECaps(SecCmsSignerInfoRef signerinfo)
1086 {
1087     SecCmsAttribute *attr;
1088     CSSM_DATA_PTR smimecaps = NULL;
1089     void *mark;
1090     PLArenaPool *poolp;
1091
1092     poolp = signerinfo->cmsg->poolp;
1093
1094     mark = PORT_ArenaMark(poolp);
1095
1096     smimecaps = SECITEM_AllocItem(poolp, NULL, 0);
1097     if (smimecaps == NULL)
1098         goto loser;
1099
1100     /* create new signing time attribute */
1101 #if 1
1102     // @@@ We don't do Fortezza yet.
1103     if (SecSMIMECreateSMIMECapabilities((SecArenaPoolRef)poolp, smimecaps, PR_FALSE) != SECSuccess)
1104 #else
1105     if (SecSMIMECreateSMIMECapabilities(poolp, smimecaps,
1106                             PK11_FortezzaHasKEA(signerinfo->cert)) != SECSuccess)
1107 #endif
1108         goto loser;
1109
1110     if ((attr = SecCmsAttributeCreate(poolp, SEC_OID_PKCS9_SMIME_CAPABILITIES, smimecaps, PR_TRUE)) == NULL)
1111         goto loser;
1112
1113     if (SecCmsSignerInfoAddAuthAttr(signerinfo, attr) != SECSuccess)
1114         goto loser;
1115
1116     PORT_ArenaUnmark (poolp, mark);
1117     return SECSuccess;
1118
1119 loser:
1120     PORT_ArenaRelease (poolp, mark);
1121     return SECFailure;
1122 }
1123
1124 /*
1125  * SecCmsSignerInfoAddSMIMEEncKeyPrefs - add a SMIMEEncryptionKeyPreferences attribute to the
1126  * authenticated (i.e. signed) attributes of "signerinfo".
1127  *
1128  * This is expected to be included in outgoing signed messages for email (S/MIME).
1129  */
1130 OSStatus
1131 SecCmsSignerInfoAddSMIMEEncKeyPrefs(SecCmsSignerInfoRef signerinfo, SecCertificateRef cert, SecKeychainRef keychainOrArray)
1132 {
1133     SecCmsAttribute *attr;
1134     CSSM_DATA_PTR smimeekp = NULL;
1135     void *mark;
1136     PLArenaPool *poolp;
1137
1138 #if 0
1139     CFTypeRef policy;
1140
1141     /* verify this cert for encryption */
1142     policy = CERT_PolicyForCertUsage(certUsageEmailRecipient);
1143     if (CERT_VerifyCert(keychainOrArray, cert, policy, CFAbsoluteTimeGetCurrent(), NULL) != SECSuccess) {
1144         CFRelease(policy);
1145         return SECFailure;
1146     }
1147     CFRelease(policy);
1148 #endif
1149
1150     poolp = signerinfo->cmsg->poolp;
1151     mark = PORT_ArenaMark(poolp);
1152
1153     smimeekp = SECITEM_AllocItem(poolp, NULL, 0);
1154     if (smimeekp == NULL)
1155         goto loser;
1156
1157     /* create new signing time attribute */
1158     if (SecSMIMECreateSMIMEEncKeyPrefs((SecArenaPoolRef)poolp, smimeekp, cert) != SECSuccess)
1159         goto loser;
1160
1161     if ((attr = SecCmsAttributeCreate(poolp, SEC_OID_SMIME_ENCRYPTION_KEY_PREFERENCE, smimeekp, PR_TRUE)) == NULL)
1162         goto loser;
1163
1164     if (SecCmsSignerInfoAddAuthAttr(signerinfo, attr) != SECSuccess)
1165         goto loser;
1166
1167     PORT_ArenaUnmark (poolp, mark);
1168     return SECSuccess;
1169
1170 loser:
1171     PORT_ArenaRelease (poolp, mark);
1172     return SECFailure;
1173 }
1174
1175 /*
1176  * SecCmsSignerInfoAddMSSMIMEEncKeyPrefs - add a SMIMEEncryptionKeyPreferences attribute to the
1177  * authenticated (i.e. signed) attributes of "signerinfo", using the OID prefered by Microsoft.
1178  *
1179  * This is expected to be included in outgoing signed messages for email (S/MIME),
1180  * if compatibility with Microsoft mail clients is wanted.
1181  */
1182 OSStatus
1183 SecCmsSignerInfoAddMSSMIMEEncKeyPrefs(SecCmsSignerInfoRef signerinfo, SecCertificateRef cert, SecKeychainRef keychainOrArray)
1184 {
1185     SecCmsAttribute *attr;
1186     CSSM_DATA_PTR smimeekp = NULL;
1187     void *mark;
1188     PLArenaPool *poolp;
1189
1190 #if 0
1191     CFTypeRef policy;
1192
1193     /* verify this cert for encryption */
1194     policy = CERT_PolicyForCertUsage(certUsageEmailRecipient);
1195     if (CERT_VerifyCert(keychainOrArray, cert, policy, CFAbsoluteTimeGetCurrent(), NULL) != SECSuccess) {
1196         CFRelease(policy);
1197         return SECFailure;
1198     }
1199     CFRelease(policy);
1200 #endif
1201
1202     poolp = signerinfo->cmsg->poolp;
1203     mark = PORT_ArenaMark(poolp);
1204
1205     smimeekp = SECITEM_AllocItem(poolp, NULL, 0);
1206     if (smimeekp == NULL)
1207         goto loser;
1208
1209     /* create new signing time attribute */
1210     if (SecSMIMECreateMSSMIMEEncKeyPrefs((SecArenaPoolRef)poolp, smimeekp, cert) != SECSuccess)
1211         goto loser;
1212
1213     if ((attr = SecCmsAttributeCreate(poolp, SEC_OID_MS_SMIME_ENCRYPTION_KEY_PREFERENCE, smimeekp, PR_TRUE)) == NULL)
1214         goto loser;
1215
1216     if (SecCmsSignerInfoAddAuthAttr(signerinfo, attr) != SECSuccess)
1217         goto loser;
1218
1219     PORT_ArenaUnmark (poolp, mark);
1220     return SECSuccess;
1221
1222 loser:
1223     PORT_ArenaRelease (poolp, mark);
1224     return SECFailure;
1225 }
1226
1227 /*
1228  * SecCmsSignerInfoAddTimeStamp - add time stamp to the
1229  * unauthenticated (i.e. unsigned) attributes of "signerinfo".
1230  *
1231  * This will initially be used for time stamping signed applications
1232  * by using a Time Stamping Authority. It may also be included in outgoing signed
1233  * messages for email (S/MIME), and may be useful in other situations.
1234  *
1235  * This should only be added once; a second call will do nothing.
1236  *
1237  */
1238
1239 /*
1240 Countersignature attribute values have ASN.1 type Countersignature:
1241       Countersignature ::= SignerInfo
1242    Countersignature values have the same meaning as SignerInfo values
1243    for ordinary signatures, except that:
1244    1.  The signedAttributes field MUST NOT contain a content-type
1245        attribute; there is no content type for countersignatures.
1246    2.  The signedAttributes field MUST contain a message-digest
1247        attribute if it contains any other attributes.
1248    3.  The input to the message-digesting process is the contents octets
1249        of the DER encoding of the signatureValue field of the SignerInfo
1250        value with which the attribute is associated.
1251 */
1252
1253 /*!
1254     @function
1255     @abstract Create a timestamp unsigned attribute with a TimeStampToken.
1256 */
1257
1258 OSStatus
1259 SecCmsSignerInfoAddTimeStamp(SecCmsSignerInfoRef signerinfo, CSSM_DATA *tstoken)
1260 {
1261     SecCmsAttribute *attr;
1262     PLArenaPool *poolp = signerinfo->cmsg->poolp;
1263     void *mark = PORT_ArenaMark(poolp);
1264
1265     // We have already encoded this ourselves, so last param is PR_TRUE
1266     if ((attr = SecCmsAttributeCreate(poolp, SEC_OID_PKCS9_TIMESTAMP_TOKEN, tstoken, PR_TRUE)) == NULL)
1267         goto loser;
1268
1269     if (SecCmsSignerInfoAddUnauthAttr(signerinfo, attr) != SECSuccess)
1270         goto loser;
1271
1272     PORT_ArenaUnmark (poolp, mark);
1273
1274     return SECSuccess;
1275
1276 loser:
1277     PORT_ArenaRelease (poolp, mark);
1278     return SECFailure;
1279 }
1280
1281 /*
1282  * SecCmsSignerInfoAddCounterSignature - countersign a signerinfo
1283  *
1284  * 1. digest the DER-encoded signature value of the original signerinfo
1285  * 2. create new signerinfo with correct version, sid, digestAlg
1286  * 3. add message-digest authAttr, but NO content-type
1287  * 4. sign the authAttrs
1288  * 5. DER-encode the new signerInfo
1289  * 6. add the whole thing to original signerInfo's unAuthAttrs
1290  *    as a SEC_OID_PKCS9_COUNTER_SIGNATURE attribute
1291  *
1292  * XXXX give back the new signerinfo?
1293  */
1294 OSStatus
1295 SecCmsSignerInfoAddCounterSignature(SecCmsSignerInfoRef signerinfo,
1296                                     SECOidTag digestalg, SecIdentityRef identity)
1297 {
1298     /* XXXX TBD XXXX */
1299     return SECFailure;
1300 }
1301
1302 /*
1303  * XXXX the following needs to be done in the S/MIME layer code
1304  * after signature of a signerinfo is verified
1305  */
1306 OSStatus
1307 SecCmsSignerInfoSaveSMIMEProfile(SecCmsSignerInfoRef signerinfo)
1308 {
1309     SecCertificateRef cert = NULL;
1310     CSSM_DATA_PTR profile = NULL;
1311     SecCmsAttribute *attr;
1312     CSSM_DATA_PTR utc_stime = NULL;
1313     CSSM_DATA_PTR ekp;
1314     int save_error;
1315     OSStatus rv;
1316     Boolean must_free_cert = PR_FALSE;
1317     OSStatus status;
1318     SecKeychainRef keychainOrArray;
1319
1320     status = SecKeychainCopyDefault(&keychainOrArray);
1321
1322     /* sanity check - see if verification status is ok (unverified does not count...) */
1323     if (signerinfo->verificationStatus != SecCmsVSGoodSignature)
1324         return SECFailure;
1325
1326     /* find preferred encryption cert */
1327     if (!SecCmsArrayIsEmpty((void **)signerinfo->authAttr) &&
1328         (attr = SecCmsAttributeArrayFindAttrByOidTag(signerinfo->authAttr,
1329                                SEC_OID_SMIME_ENCRYPTION_KEY_PREFERENCE, PR_TRUE)) != NULL)
1330     { /* we have a SMIME_ENCRYPTION_KEY_PREFERENCE attribute! */
1331         ekp = SecCmsAttributeGetValue(attr);
1332         if (ekp == NULL)
1333             return SECFailure;
1334
1335         /* we assume that all certs coming with the message have been imported to the */
1336         /* temporary database */
1337         cert = SecSMIMEGetCertFromEncryptionKeyPreference(keychainOrArray, ekp);
1338         if (cert == NULL)
1339             return SECFailure;
1340         must_free_cert = PR_TRUE;
1341     }
1342
1343     if (cert == NULL) {
1344         /* no preferred cert found?
1345          * find the cert the signerinfo is signed with instead */
1346         CFStringRef emailAddress=NULL;
1347
1348         cert = SecCmsSignerInfoGetSigningCertificate(signerinfo, keychainOrArray);
1349         if (cert == NULL)
1350             return SECFailure;
1351         if (SecCertificateGetEmailAddress(cert,&emailAddress))
1352             return SECFailure;
1353     }
1354
1355     /* 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.
1356      * that's OK, we can still save the S/MIME profile. The encryption cert
1357      * should have already been saved */
1358 #ifdef notdef
1359     if (CERT_VerifyCert(keychainOrArray, cert, certUsageEmailRecipient, CFAbsoluteTimeGetCurrent(), NULL) != SECSuccess) {
1360         if (must_free_cert)
1361             CERT_DestroyCertificate(cert);
1362         return SECFailure;
1363     }
1364 #endif
1365
1366     /* XXX store encryption cert permanently? */
1367
1368     /*
1369      * Remember the current error set because we do not care about
1370      * anything set by the functions we are about to call.
1371      */
1372     save_error = PORT_GetError();
1373
1374     if (!SecCmsArrayIsEmpty((void **)signerinfo->authAttr)) {
1375         attr = SecCmsAttributeArrayFindAttrByOidTag(signerinfo->authAttr,
1376                                        SEC_OID_PKCS9_SMIME_CAPABILITIES,
1377                                        PR_TRUE);
1378         profile = SecCmsAttributeGetValue(attr);
1379         attr = SecCmsAttributeArrayFindAttrByOidTag(signerinfo->authAttr,
1380                                        SEC_OID_PKCS9_SIGNING_TIME,
1381                                        PR_TRUE);
1382         utc_stime = SecCmsAttributeGetValue(attr);
1383     }
1384
1385     rv = CERT_SaveSMimeProfile (cert, profile, utc_stime);
1386     if (must_free_cert)
1387         CERT_DestroyCertificate(cert);
1388
1389     /*
1390      * Restore the saved error in case the calls above set a new
1391      * one that we do not actually care about.
1392      */
1393     PORT_SetError (save_error);
1394
1395     return rv;
1396 }
1397
1398 /*
1399  * SecCmsSignerInfoIncludeCerts - set cert chain inclusion mode for this signer
1400  */
1401 OSStatus
1402 SecCmsSignerInfoIncludeCerts(SecCmsSignerInfoRef signerinfo, SecCmsCertChainMode cm, SECCertUsage usage)
1403 {
1404     if (signerinfo->cert == NULL)
1405         return SECFailure;
1406
1407     /* don't leak if we get called twice */
1408     if (signerinfo->certList != NULL) {
1409         CFRelease(signerinfo->certList);
1410         signerinfo->certList = NULL;
1411     }
1412
1413     switch (cm) {
1414     case SecCmsCMNone:
1415         signerinfo->certList = NULL;
1416         break;
1417     case SecCmsCMCertOnly:
1418         signerinfo->certList = CERT_CertListFromCert(signerinfo->cert);
1419         break;
1420     case SecCmsCMCertChain:
1421         signerinfo->certList = CERT_CertChainFromCert(signerinfo->cert, usage, PR_FALSE);
1422         break;
1423     case SecCmsCMCertChainWithRoot:
1424         signerinfo->certList = CERT_CertChainFromCert(signerinfo->cert, usage, PR_TRUE);
1425         break;
1426     }
1427
1428     if (cm != SecCmsCMNone && signerinfo->certList == NULL)
1429         return SECFailure;
1430
1431     return SECSuccess;
1432 }