xref: /freebsd/crypto/openssl/crypto/cms/cms_lib.c (revision 0d0c8621fd181e507f0fb50ffcca606faf66a8c2)
1  /*
2   * Copyright 2008-2023 The OpenSSL Project Authors. All Rights Reserved.
3   *
4   * Licensed under the Apache License 2.0 (the "License").  You may not use
5   * this file except in compliance with the License.  You can obtain a copy
6   * in the file LICENSE in the source distribution or at
7   * https://www.openssl.org/source/license.html
8   */
9  
10  #include <openssl/asn1t.h>
11  #include <openssl/x509v3.h>
12  #include <openssl/err.h>
13  #include <openssl/pem.h>
14  #include <openssl/bio.h>
15  #include <openssl/asn1.h>
16  #include <openssl/cms.h>
17  #include <openssl/cms.h>
18  #include "internal/sizes.h"
19  #include "crypto/x509.h"
20  #include "cms_local.h"
21  
22  static STACK_OF(CMS_CertificateChoices)
23  **cms_get0_certificate_choices(CMS_ContentInfo *cms);
24  
25  IMPLEMENT_ASN1_ALLOC_FUNCTIONS(CMS_ContentInfo)
IMPLEMENT_ASN1_PRINT_FUNCTION(CMS_ContentInfo)26  IMPLEMENT_ASN1_PRINT_FUNCTION(CMS_ContentInfo)
27  
28  CMS_ContentInfo *d2i_CMS_ContentInfo(CMS_ContentInfo **a,
29                                       const unsigned char **in, long len)
30  {
31      CMS_ContentInfo *ci;
32      const CMS_CTX *ctx = ossl_cms_get0_cmsctx(a == NULL ? NULL : *a);
33  
34      ci = (CMS_ContentInfo *)ASN1_item_d2i_ex((ASN1_VALUE **)a, in, len,
35                                            (CMS_ContentInfo_it()),
36                                            ossl_cms_ctx_get0_libctx(ctx),
37                                            ossl_cms_ctx_get0_propq(ctx));
38      if (ci != NULL) {
39          ERR_set_mark();
40          ossl_cms_resolve_libctx(ci);
41          ERR_pop_to_mark();
42      }
43      return ci;
44  }
45  
i2d_CMS_ContentInfo(const CMS_ContentInfo * a,unsigned char ** out)46  int i2d_CMS_ContentInfo(const CMS_ContentInfo *a, unsigned char **out)
47  {
48      return ASN1_item_i2d((const ASN1_VALUE *)a, out, (CMS_ContentInfo_it()));
49  }
50  
CMS_ContentInfo_new_ex(OSSL_LIB_CTX * libctx,const char * propq)51  CMS_ContentInfo *CMS_ContentInfo_new_ex(OSSL_LIB_CTX *libctx, const char *propq)
52  {
53      CMS_ContentInfo *ci;
54  
55      ci = (CMS_ContentInfo *)ASN1_item_new_ex(ASN1_ITEM_rptr(CMS_ContentInfo),
56                                               libctx, propq);
57      if (ci != NULL) {
58          ci->ctx.libctx = libctx;
59          ci->ctx.propq = NULL;
60          if (propq != NULL) {
61              ci->ctx.propq = OPENSSL_strdup(propq);
62              if (ci->ctx.propq == NULL) {
63                  CMS_ContentInfo_free(ci);
64                  ci = NULL;
65                  ERR_raise(ERR_LIB_PROV, ERR_R_MALLOC_FAILURE);
66              }
67          }
68      }
69      return ci;
70  }
71  
ossl_cms_get0_cmsctx(const CMS_ContentInfo * cms)72  const CMS_CTX *ossl_cms_get0_cmsctx(const CMS_ContentInfo *cms)
73  {
74      return cms != NULL ? &cms->ctx : NULL;
75  }
76  
ossl_cms_ctx_get0_libctx(const CMS_CTX * ctx)77  OSSL_LIB_CTX *ossl_cms_ctx_get0_libctx(const CMS_CTX *ctx)
78  {
79      return ctx != NULL ? ctx->libctx : NULL;
80  }
81  
ossl_cms_ctx_get0_propq(const CMS_CTX * ctx)82  const char *ossl_cms_ctx_get0_propq(const CMS_CTX *ctx)
83  {
84      return ctx != NULL ? ctx->propq : NULL;
85  }
86  
ossl_cms_resolve_libctx(CMS_ContentInfo * ci)87  void ossl_cms_resolve_libctx(CMS_ContentInfo *ci)
88  {
89      int i;
90      CMS_CertificateChoices *cch;
91      STACK_OF(CMS_CertificateChoices) **pcerts;
92      const CMS_CTX *ctx = ossl_cms_get0_cmsctx(ci);
93      OSSL_LIB_CTX *libctx = ossl_cms_ctx_get0_libctx(ctx);
94      const char *propq = ossl_cms_ctx_get0_propq(ctx);
95  
96      ossl_cms_SignerInfos_set_cmsctx(ci);
97      ossl_cms_RecipientInfos_set_cmsctx(ci);
98  
99      pcerts = cms_get0_certificate_choices(ci);
100      if (pcerts != NULL) {
101          for (i = 0; i < sk_CMS_CertificateChoices_num(*pcerts); i++) {
102              cch = sk_CMS_CertificateChoices_value(*pcerts, i);
103              if (cch->type == CMS_CERTCHOICE_CERT)
104                  ossl_x509_set0_libctx(cch->d.certificate, libctx, propq);
105          }
106      }
107  }
108  
CMS_get0_type(const CMS_ContentInfo * cms)109  const ASN1_OBJECT *CMS_get0_type(const CMS_ContentInfo *cms)
110  {
111      return cms->contentType;
112  }
113  
ossl_cms_Data_create(OSSL_LIB_CTX * libctx,const char * propq)114  CMS_ContentInfo *ossl_cms_Data_create(OSSL_LIB_CTX *libctx, const char *propq)
115  {
116      CMS_ContentInfo *cms = CMS_ContentInfo_new_ex(libctx, propq);
117  
118      if (cms != NULL) {
119          cms->contentType = OBJ_nid2obj(NID_pkcs7_data);
120          /* Never detached */
121          CMS_set_detached(cms, 0);
122      }
123      return cms;
124  }
125  
ossl_cms_content_bio(CMS_ContentInfo * cms)126  BIO *ossl_cms_content_bio(CMS_ContentInfo *cms)
127  {
128      ASN1_OCTET_STRING **pos = CMS_get0_content(cms);
129  
130      if (pos == NULL)
131          return NULL;
132      /* If content detached data goes nowhere: create NULL BIO */
133      if (*pos == NULL)
134          return BIO_new(BIO_s_null());
135      /*
136       * If content not detached and created return memory BIO
137       */
138      if (*pos == NULL || ((*pos)->flags == ASN1_STRING_FLAG_CONT))
139          return BIO_new(BIO_s_mem());
140      /* Else content was read in: return read only BIO for it */
141      return BIO_new_mem_buf((*pos)->data, (*pos)->length);
142  }
143  
CMS_dataInit(CMS_ContentInfo * cms,BIO * icont)144  BIO *CMS_dataInit(CMS_ContentInfo *cms, BIO *icont)
145  {
146      BIO *cmsbio, *cont;
147      if (icont)
148          cont = icont;
149      else
150          cont = ossl_cms_content_bio(cms);
151      if (!cont) {
152          ERR_raise(ERR_LIB_CMS, CMS_R_NO_CONTENT);
153          return NULL;
154      }
155      switch (OBJ_obj2nid(cms->contentType)) {
156  
157      case NID_pkcs7_data:
158          return cont;
159  
160      case NID_pkcs7_signed:
161          cmsbio = ossl_cms_SignedData_init_bio(cms);
162          break;
163  
164      case NID_pkcs7_digest:
165          cmsbio = ossl_cms_DigestedData_init_bio(cms);
166          break;
167  #ifdef ZLIB
168      case NID_id_smime_ct_compressedData:
169          cmsbio = ossl_cms_CompressedData_init_bio(cms);
170          break;
171  #endif
172  
173      case NID_pkcs7_encrypted:
174          cmsbio = ossl_cms_EncryptedData_init_bio(cms);
175          break;
176  
177      case NID_pkcs7_enveloped:
178          cmsbio = ossl_cms_EnvelopedData_init_bio(cms);
179          break;
180  
181      case NID_id_smime_ct_authEnvelopedData:
182          cmsbio = ossl_cms_AuthEnvelopedData_init_bio(cms);
183          break;
184  
185      default:
186          ERR_raise(ERR_LIB_CMS, CMS_R_UNSUPPORTED_TYPE);
187          goto err;
188      }
189  
190      if (cmsbio)
191          return BIO_push(cmsbio, cont);
192  err:
193      if (!icont)
194          BIO_free(cont);
195      return NULL;
196  
197  }
198  
199  /* unfortunately cannot constify SMIME_write_ASN1() due to this function */
CMS_dataFinal(CMS_ContentInfo * cms,BIO * cmsbio)200  int CMS_dataFinal(CMS_ContentInfo *cms, BIO *cmsbio)
201  {
202      ASN1_OCTET_STRING **pos = CMS_get0_content(cms);
203  
204      if (pos == NULL)
205          return 0;
206      /* If embedded content find memory BIO and set content */
207      if (*pos && ((*pos)->flags & ASN1_STRING_FLAG_CONT)) {
208          BIO *mbio;
209          unsigned char *cont;
210          long contlen;
211          mbio = BIO_find_type(cmsbio, BIO_TYPE_MEM);
212          if (!mbio) {
213              ERR_raise(ERR_LIB_CMS, CMS_R_CONTENT_NOT_FOUND);
214              return 0;
215          }
216          contlen = BIO_get_mem_data(mbio, &cont);
217          /* Set bio as read only so its content can't be clobbered */
218          BIO_set_flags(mbio, BIO_FLAGS_MEM_RDONLY);
219          BIO_set_mem_eof_return(mbio, 0);
220          ASN1_STRING_set0(*pos, cont, contlen);
221          (*pos)->flags &= ~ASN1_STRING_FLAG_CONT;
222      }
223  
224      switch (OBJ_obj2nid(cms->contentType)) {
225  
226      case NID_pkcs7_data:
227      case NID_pkcs7_encrypted:
228      case NID_id_smime_ct_compressedData:
229          /* Nothing to do */
230          return 1;
231  
232      case NID_pkcs7_enveloped:
233          return ossl_cms_EnvelopedData_final(cms, cmsbio);
234  
235      case NID_id_smime_ct_authEnvelopedData:
236          return ossl_cms_AuthEnvelopedData_final(cms, cmsbio);
237  
238      case NID_pkcs7_signed:
239          return ossl_cms_SignedData_final(cms, cmsbio);
240  
241      case NID_pkcs7_digest:
242          return ossl_cms_DigestedData_do_final(cms, cmsbio, 0);
243  
244      default:
245          ERR_raise(ERR_LIB_CMS, CMS_R_UNSUPPORTED_TYPE);
246          return 0;
247      }
248  }
249  
250  /*
251   * Return an OCTET STRING pointer to content. This allows it to be accessed
252   * or set later.
253   */
254  
CMS_get0_content(CMS_ContentInfo * cms)255  ASN1_OCTET_STRING **CMS_get0_content(CMS_ContentInfo *cms)
256  {
257      switch (OBJ_obj2nid(cms->contentType)) {
258  
259      case NID_pkcs7_data:
260          return &cms->d.data;
261  
262      case NID_pkcs7_signed:
263          return &cms->d.signedData->encapContentInfo->eContent;
264  
265      case NID_pkcs7_enveloped:
266          return &cms->d.envelopedData->encryptedContentInfo->encryptedContent;
267  
268      case NID_pkcs7_digest:
269          return &cms->d.digestedData->encapContentInfo->eContent;
270  
271      case NID_pkcs7_encrypted:
272          return &cms->d.encryptedData->encryptedContentInfo->encryptedContent;
273  
274      case NID_id_smime_ct_authEnvelopedData:
275          return &cms->d.authEnvelopedData->authEncryptedContentInfo
276                                          ->encryptedContent;
277  
278      case NID_id_smime_ct_authData:
279          return &cms->d.authenticatedData->encapContentInfo->eContent;
280  
281      case NID_id_smime_ct_compressedData:
282          return &cms->d.compressedData->encapContentInfo->eContent;
283  
284      default:
285          if (cms->d.other->type == V_ASN1_OCTET_STRING)
286              return &cms->d.other->value.octet_string;
287          ERR_raise(ERR_LIB_CMS, CMS_R_UNSUPPORTED_CONTENT_TYPE);
288          return NULL;
289  
290      }
291  }
292  
293  /*
294   * Return an ASN1_OBJECT pointer to content type. This allows it to be
295   * accessed or set later.
296   */
297  
cms_get0_econtent_type(CMS_ContentInfo * cms)298  static ASN1_OBJECT **cms_get0_econtent_type(CMS_ContentInfo *cms)
299  {
300      switch (OBJ_obj2nid(cms->contentType)) {
301  
302      case NID_pkcs7_signed:
303          return &cms->d.signedData->encapContentInfo->eContentType;
304  
305      case NID_pkcs7_enveloped:
306          return &cms->d.envelopedData->encryptedContentInfo->contentType;
307  
308      case NID_pkcs7_digest:
309          return &cms->d.digestedData->encapContentInfo->eContentType;
310  
311      case NID_pkcs7_encrypted:
312          return &cms->d.encryptedData->encryptedContentInfo->contentType;
313  
314      case NID_id_smime_ct_authEnvelopedData:
315          return &cms->d.authEnvelopedData->authEncryptedContentInfo
316                                          ->contentType;
317      case NID_id_smime_ct_authData:
318          return &cms->d.authenticatedData->encapContentInfo->eContentType;
319  
320      case NID_id_smime_ct_compressedData:
321          return &cms->d.compressedData->encapContentInfo->eContentType;
322  
323      default:
324          ERR_raise(ERR_LIB_CMS, CMS_R_UNSUPPORTED_CONTENT_TYPE);
325          return NULL;
326  
327      }
328  }
329  
CMS_get0_eContentType(CMS_ContentInfo * cms)330  const ASN1_OBJECT *CMS_get0_eContentType(CMS_ContentInfo *cms)
331  {
332      ASN1_OBJECT **petype;
333      petype = cms_get0_econtent_type(cms);
334      if (petype)
335          return *petype;
336      return NULL;
337  }
338  
CMS_set1_eContentType(CMS_ContentInfo * cms,const ASN1_OBJECT * oid)339  int CMS_set1_eContentType(CMS_ContentInfo *cms, const ASN1_OBJECT *oid)
340  {
341      ASN1_OBJECT **petype, *etype;
342  
343      petype = cms_get0_econtent_type(cms);
344      if (petype == NULL)
345          return 0;
346      if (oid == NULL)
347          return 1;
348      etype = OBJ_dup(oid);
349      if (etype == NULL)
350          return 0;
351      ASN1_OBJECT_free(*petype);
352      *petype = etype;
353      return 1;
354  }
355  
CMS_is_detached(CMS_ContentInfo * cms)356  int CMS_is_detached(CMS_ContentInfo *cms)
357  {
358      ASN1_OCTET_STRING **pos;
359  
360      pos = CMS_get0_content(cms);
361      if (pos == NULL)
362          return -1;
363      if (*pos != NULL)
364          return 0;
365      return 1;
366  }
367  
CMS_set_detached(CMS_ContentInfo * cms,int detached)368  int CMS_set_detached(CMS_ContentInfo *cms, int detached)
369  {
370      ASN1_OCTET_STRING **pos;
371  
372      pos = CMS_get0_content(cms);
373      if (pos == NULL)
374          return 0;
375      if (detached) {
376          ASN1_OCTET_STRING_free(*pos);
377          *pos = NULL;
378          return 1;
379      }
380      if (*pos == NULL)
381          *pos = ASN1_OCTET_STRING_new();
382      if (*pos != NULL) {
383          /*
384           * NB: special flag to show content is created and not read in.
385           */
386          (*pos)->flags |= ASN1_STRING_FLAG_CONT;
387          return 1;
388      }
389      ERR_raise(ERR_LIB_CMS, ERR_R_MALLOC_FAILURE);
390      return 0;
391  }
392  
393  /* Create a digest BIO from an X509_ALGOR structure */
394  
ossl_cms_DigestAlgorithm_init_bio(X509_ALGOR * digestAlgorithm,const CMS_CTX * ctx)395  BIO *ossl_cms_DigestAlgorithm_init_bio(X509_ALGOR *digestAlgorithm,
396                                         const CMS_CTX *ctx)
397  {
398      BIO *mdbio = NULL;
399      const ASN1_OBJECT *digestoid;
400      const EVP_MD *digest = NULL;
401      EVP_MD *fetched_digest = NULL;
402      char alg[OSSL_MAX_NAME_SIZE];
403  
404      X509_ALGOR_get0(&digestoid, NULL, NULL, digestAlgorithm);
405      OBJ_obj2txt(alg, sizeof(alg), digestoid, 0);
406  
407      (void)ERR_set_mark();
408      fetched_digest = EVP_MD_fetch(ossl_cms_ctx_get0_libctx(ctx), alg,
409                                    ossl_cms_ctx_get0_propq(ctx));
410  
411      if (fetched_digest != NULL)
412          digest = fetched_digest;
413      else
414          digest = EVP_get_digestbyobj(digestoid);
415      if (digest == NULL) {
416          (void)ERR_clear_last_mark();
417          ERR_raise(ERR_LIB_CMS, CMS_R_UNKNOWN_DIGEST_ALGORITHM);
418          goto err;
419      }
420      (void)ERR_pop_to_mark();
421  
422      mdbio = BIO_new(BIO_f_md());
423      if (mdbio == NULL || BIO_set_md(mdbio, digest) <= 0) {
424          ERR_raise(ERR_LIB_CMS, CMS_R_MD_BIO_INIT_ERROR);
425          goto err;
426      }
427      EVP_MD_free(fetched_digest);
428      return mdbio;
429   err:
430      EVP_MD_free(fetched_digest);
431      BIO_free(mdbio);
432      return NULL;
433  }
434  
435  /* Locate a message digest content from a BIO chain based on SignerInfo */
436  
ossl_cms_DigestAlgorithm_find_ctx(EVP_MD_CTX * mctx,BIO * chain,X509_ALGOR * mdalg)437  int ossl_cms_DigestAlgorithm_find_ctx(EVP_MD_CTX *mctx, BIO *chain,
438                                        X509_ALGOR *mdalg)
439  {
440      int nid;
441      const ASN1_OBJECT *mdoid;
442      X509_ALGOR_get0(&mdoid, NULL, NULL, mdalg);
443      nid = OBJ_obj2nid(mdoid);
444      /* Look for digest type to match signature */
445      for (;;) {
446          EVP_MD_CTX *mtmp;
447          chain = BIO_find_type(chain, BIO_TYPE_MD);
448          if (chain == NULL) {
449              ERR_raise(ERR_LIB_CMS, CMS_R_NO_MATCHING_DIGEST);
450              return 0;
451          }
452          BIO_get_md_ctx(chain, &mtmp);
453          if (EVP_MD_CTX_get_type(mtmp) == nid
454              /*
455               * Workaround for broken implementations that use signature
456               * algorithm OID instead of digest.
457               */
458              || EVP_MD_get_pkey_type(EVP_MD_CTX_get0_md(mtmp)) == nid)
459              return EVP_MD_CTX_copy_ex(mctx, mtmp);
460          chain = BIO_next(chain);
461      }
462  }
463  
STACK_OF(CMS_CertificateChoices)464  static STACK_OF(CMS_CertificateChoices)
465  **cms_get0_certificate_choices(CMS_ContentInfo *cms)
466  {
467      switch (OBJ_obj2nid(cms->contentType)) {
468  
469      case NID_pkcs7_signed:
470          return &cms->d.signedData->certificates;
471  
472      case NID_pkcs7_enveloped:
473          if (cms->d.envelopedData->originatorInfo == NULL)
474              return NULL;
475          return &cms->d.envelopedData->originatorInfo->certificates;
476  
477      case NID_id_smime_ct_authEnvelopedData:
478          if (cms->d.authEnvelopedData->originatorInfo == NULL)
479              return NULL;
480          return &cms->d.authEnvelopedData->originatorInfo->certificates;
481  
482      default:
483          ERR_raise(ERR_LIB_CMS, CMS_R_UNSUPPORTED_CONTENT_TYPE);
484          return NULL;
485  
486      }
487  }
488  
CMS_add0_CertificateChoices(CMS_ContentInfo * cms)489  CMS_CertificateChoices *CMS_add0_CertificateChoices(CMS_ContentInfo *cms)
490  {
491      STACK_OF(CMS_CertificateChoices) **pcerts;
492      CMS_CertificateChoices *cch;
493  
494      pcerts = cms_get0_certificate_choices(cms);
495      if (pcerts == NULL)
496          return NULL;
497      if (*pcerts == NULL)
498          *pcerts = sk_CMS_CertificateChoices_new_null();
499      if (*pcerts == NULL)
500          return NULL;
501      cch = M_ASN1_new_of(CMS_CertificateChoices);
502      if (!cch)
503          return NULL;
504      if (!sk_CMS_CertificateChoices_push(*pcerts, cch)) {
505          M_ASN1_free_of(cch, CMS_CertificateChoices);
506          return NULL;
507      }
508      return cch;
509  }
510  
CMS_add0_cert(CMS_ContentInfo * cms,X509 * cert)511  int CMS_add0_cert(CMS_ContentInfo *cms, X509 *cert)
512  {
513      CMS_CertificateChoices *cch;
514      STACK_OF(CMS_CertificateChoices) **pcerts;
515      int i;
516  
517      pcerts = cms_get0_certificate_choices(cms);
518      if (pcerts == NULL)
519          return 0;
520      for (i = 0; i < sk_CMS_CertificateChoices_num(*pcerts); i++) {
521          cch = sk_CMS_CertificateChoices_value(*pcerts, i);
522          if (cch->type == CMS_CERTCHOICE_CERT) {
523              if (!X509_cmp(cch->d.certificate, cert)) {
524                  ERR_raise(ERR_LIB_CMS, CMS_R_CERTIFICATE_ALREADY_PRESENT);
525                  return 0;
526              }
527          }
528      }
529      cch = CMS_add0_CertificateChoices(cms);
530      if (!cch)
531          return 0;
532      cch->type = CMS_CERTCHOICE_CERT;
533      cch->d.certificate = cert;
534      return 1;
535  }
536  
CMS_add1_cert(CMS_ContentInfo * cms,X509 * cert)537  int CMS_add1_cert(CMS_ContentInfo *cms, X509 *cert)
538  {
539      int r;
540      r = CMS_add0_cert(cms, cert);
541      if (r > 0)
542          X509_up_ref(cert);
543      return r;
544  }
545  
STACK_OF(CMS_RevocationInfoChoice)546  static STACK_OF(CMS_RevocationInfoChoice)
547  **cms_get0_revocation_choices(CMS_ContentInfo *cms)
548  {
549      switch (OBJ_obj2nid(cms->contentType)) {
550  
551      case NID_pkcs7_signed:
552          return &cms->d.signedData->crls;
553  
554      case NID_pkcs7_enveloped:
555          if (cms->d.envelopedData->originatorInfo == NULL)
556              return NULL;
557          return &cms->d.envelopedData->originatorInfo->crls;
558  
559      case NID_id_smime_ct_authEnvelopedData:
560          if (cms->d.authEnvelopedData->originatorInfo == NULL)
561              return NULL;
562          return &cms->d.authEnvelopedData->originatorInfo->crls;
563  
564      default:
565          ERR_raise(ERR_LIB_CMS, CMS_R_UNSUPPORTED_CONTENT_TYPE);
566          return NULL;
567  
568      }
569  }
570  
CMS_add0_RevocationInfoChoice(CMS_ContentInfo * cms)571  CMS_RevocationInfoChoice *CMS_add0_RevocationInfoChoice(CMS_ContentInfo *cms)
572  {
573      STACK_OF(CMS_RevocationInfoChoice) **pcrls;
574      CMS_RevocationInfoChoice *rch;
575  
576      pcrls = cms_get0_revocation_choices(cms);
577      if (pcrls == NULL)
578          return NULL;
579      if (*pcrls == NULL)
580          *pcrls = sk_CMS_RevocationInfoChoice_new_null();
581      if (*pcrls == NULL)
582          return NULL;
583      rch = M_ASN1_new_of(CMS_RevocationInfoChoice);
584      if (rch == NULL)
585          return NULL;
586      if (!sk_CMS_RevocationInfoChoice_push(*pcrls, rch)) {
587          M_ASN1_free_of(rch, CMS_RevocationInfoChoice);
588          return NULL;
589      }
590      return rch;
591  }
592  
CMS_add0_crl(CMS_ContentInfo * cms,X509_CRL * crl)593  int CMS_add0_crl(CMS_ContentInfo *cms, X509_CRL *crl)
594  {
595      CMS_RevocationInfoChoice *rch;
596      rch = CMS_add0_RevocationInfoChoice(cms);
597      if (!rch)
598          return 0;
599      rch->type = CMS_REVCHOICE_CRL;
600      rch->d.crl = crl;
601      return 1;
602  }
603  
CMS_add1_crl(CMS_ContentInfo * cms,X509_CRL * crl)604  int CMS_add1_crl(CMS_ContentInfo *cms, X509_CRL *crl)
605  {
606      if (!X509_CRL_up_ref(crl))
607          return 0;
608      if (CMS_add0_crl(cms, crl))
609          return 1;
610      X509_CRL_free(crl);
611      return 0;
612  }
613  
STACK_OF(X509)614  STACK_OF(X509) *CMS_get1_certs(CMS_ContentInfo *cms)
615  {
616      STACK_OF(X509) *certs = NULL;
617      CMS_CertificateChoices *cch;
618      STACK_OF(CMS_CertificateChoices) **pcerts;
619      int i;
620  
621      pcerts = cms_get0_certificate_choices(cms);
622      if (pcerts == NULL)
623          return NULL;
624      for (i = 0; i < sk_CMS_CertificateChoices_num(*pcerts); i++) {
625          cch = sk_CMS_CertificateChoices_value(*pcerts, i);
626          if (cch->type == 0) {
627              if (!ossl_x509_add_cert_new(&certs, cch->d.certificate,
628                                          X509_ADD_FLAG_UP_REF)) {
629                  sk_X509_pop_free(certs, X509_free);
630                  return NULL;
631              }
632          }
633      }
634      return certs;
635  
636  }
637  
STACK_OF(X509_CRL)638  STACK_OF(X509_CRL) *CMS_get1_crls(CMS_ContentInfo *cms)
639  {
640      STACK_OF(X509_CRL) *crls = NULL;
641      STACK_OF(CMS_RevocationInfoChoice) **pcrls;
642      CMS_RevocationInfoChoice *rch;
643      int i;
644  
645      pcrls = cms_get0_revocation_choices(cms);
646      if (pcrls == NULL)
647          return NULL;
648      for (i = 0; i < sk_CMS_RevocationInfoChoice_num(*pcrls); i++) {
649          rch = sk_CMS_RevocationInfoChoice_value(*pcrls, i);
650          if (rch->type == 0) {
651              if (!crls) {
652                  crls = sk_X509_CRL_new_null();
653                  if (!crls)
654                      return NULL;
655              }
656              if (!sk_X509_CRL_push(crls, rch->d.crl)) {
657                  sk_X509_CRL_pop_free(crls, X509_CRL_free);
658                  return NULL;
659              }
660              X509_CRL_up_ref(rch->d.crl);
661          }
662      }
663      return crls;
664  }
665  
ossl_cms_ias_cert_cmp(CMS_IssuerAndSerialNumber * ias,X509 * cert)666  int ossl_cms_ias_cert_cmp(CMS_IssuerAndSerialNumber *ias, X509 *cert)
667  {
668      int ret;
669      ret = X509_NAME_cmp(ias->issuer, X509_get_issuer_name(cert));
670      if (ret)
671          return ret;
672      return ASN1_INTEGER_cmp(ias->serialNumber, X509_get0_serialNumber(cert));
673  }
674  
ossl_cms_keyid_cert_cmp(ASN1_OCTET_STRING * keyid,X509 * cert)675  int ossl_cms_keyid_cert_cmp(ASN1_OCTET_STRING *keyid, X509 *cert)
676  {
677      const ASN1_OCTET_STRING *cert_keyid = X509_get0_subject_key_id(cert);
678  
679      if (cert_keyid == NULL)
680          return -1;
681      return ASN1_OCTET_STRING_cmp(keyid, cert_keyid);
682  }
683  
ossl_cms_set1_ias(CMS_IssuerAndSerialNumber ** pias,X509 * cert)684  int ossl_cms_set1_ias(CMS_IssuerAndSerialNumber **pias, X509 *cert)
685  {
686      CMS_IssuerAndSerialNumber *ias;
687      ias = M_ASN1_new_of(CMS_IssuerAndSerialNumber);
688      if (!ias)
689          goto err;
690      if (!X509_NAME_set(&ias->issuer, X509_get_issuer_name(cert)))
691          goto err;
692      if (!ASN1_STRING_copy(ias->serialNumber, X509_get0_serialNumber(cert)))
693          goto err;
694      M_ASN1_free_of(*pias, CMS_IssuerAndSerialNumber);
695      *pias = ias;
696      return 1;
697   err:
698      M_ASN1_free_of(ias, CMS_IssuerAndSerialNumber);
699      ERR_raise(ERR_LIB_CMS, ERR_R_MALLOC_FAILURE);
700      return 0;
701  }
702  
ossl_cms_set1_keyid(ASN1_OCTET_STRING ** pkeyid,X509 * cert)703  int ossl_cms_set1_keyid(ASN1_OCTET_STRING **pkeyid, X509 *cert)
704  {
705      ASN1_OCTET_STRING *keyid = NULL;
706      const ASN1_OCTET_STRING *cert_keyid;
707      cert_keyid = X509_get0_subject_key_id(cert);
708      if (cert_keyid == NULL) {
709          ERR_raise(ERR_LIB_CMS, CMS_R_CERTIFICATE_HAS_NO_KEYID);
710          return 0;
711      }
712      keyid = ASN1_STRING_dup(cert_keyid);
713      if (!keyid) {
714          ERR_raise(ERR_LIB_CMS, ERR_R_MALLOC_FAILURE);
715          return 0;
716      }
717      ASN1_OCTET_STRING_free(*pkeyid);
718      *pkeyid = keyid;
719      return 1;
720  }
721