text: /*
   * Copyright 2008-2018 The OpenSSL Project Authors. All Rights Reserved.
   *
   * Licensed under the OpenSSL license (the "License").  You may not use
   * this file except in compliance with the License.  You can obtain a copy
   * in the file LICENSE in the source distribution or at
   * https://www.openssl.org/source/license.html
   */
  
  #include BOSS_OPENSSL_U_internal__cryptlib_h //original-code:"internal/cryptlib.h"
  #include BOSS_OPENSSL_V_openssl__asn1t_h //original-code:<openssl/asn1t.h>
  #include BOSS_OPENSSL_V_openssl__x509_h //original-code:<openssl/x509.h>
  #include BOSS_OPENSSL_V_openssl__x509v3_h //original-code:<openssl/x509v3.h>
  #include BOSS_OPENSSL_V_openssl__err_h //original-code:<openssl/err.h>
  #include BOSS_OPENSSL_V_openssl__cms_h //original-code:<openssl/cms.h>
  #include "cms_lcl.h"
  #include BOSS_OPENSSL_U_internal__asn1_int_h //original-code:"internal/asn1_int.h"
  
  static BIO *cms_get_text_bio(BIO *out, unsigned int flags)
  {
      BIO *rbio;
      if (out == NULL)
          rbio = BIO_new(BIO_s_null());
      else if (flags & CMS_TEXT) {
          rbio = BIO_new(BIO_s_mem());
          BIO_set_mem_eof_return(rbio, 0);
      } else
          rbio = out;
      return rbio;
  }
  
  static int cms_copy_content(BIO *out, BIO *in, unsigned int flags)
  {
      unsigned char buf[4096];
      int r = 0, i;
      BIO *tmpout;
  
      tmpout = cms_get_text_bio(out, flags);
  
      if (tmpout == NULL) {
          CMSerr(CMS_F_CMS_COPY_CONTENT, ERR_R_MALLOC_FAILURE);
          goto err;
      }
  
      /* Read all content through chain to process digest, decrypt etc */
      for (;;) {
          i = BIO_read(in, buf, sizeof(buf));
          if (i <= 0) {
              if (BIO_method_type(in) == BIO_TYPE_CIPHER) {
                  if (!BIO_get_cipher_status(in))
                      goto err;
              }
              if (i < 0)
                  goto err;
              break;
          }
  
          if (tmpout && (BIO_write(tmpout, buf, i) != i))
              goto err;
      }
  
      if (flags & CMS_TEXT) {
          if (!SMIME_text(tmpout, out)) {
              CMSerr(CMS_F_CMS_COPY_CONTENT, CMS_R_SMIME_TEXT_ERROR);
              goto err;
          }
      }
  
      r = 1;
  
   err:
      if (tmpout != out)
          BIO_free(tmpout);
      return r;
  
  }
  
  static int check_content(CMS_ContentInfo *cms)
  {
      ASN1_OCTET_STRING **pos = CMS_get0_content(cms);
      if (!pos || !*pos) {
          CMSerr(CMS_F_CHECK_CONTENT, CMS_R_NO_CONTENT);
          return 0;
      }
      return 1;
  }
  
  static void do_free_upto(BIO *f, BIO *upto)
  {
      if (upto) {
          BIO *tbio;
          do {
              tbio = BIO_pop(f);
              BIO_free(f);
              f = tbio;
          }
          while (f && f != upto);
      } else
          BIO_free_all(f);
  }
  
  int CMS_data(CMS_ContentInfo *cms, BIO *out, unsigned int flags)
  {
      BIO *cont;
      int r;
      if (OBJ_obj2nid(CMS_get0_type(cms)) != NID_pkcs7_data) {
          CMSerr(CMS_F_CMS_DATA, CMS_R_TYPE_NOT_DATA);
          return 0;
      }
      cont = CMS_dataInit(cms, NULL);
      if (!cont)
          return 0;
      r = cms_copy_content(out, cont, flags);
      BIO_free_all(cont);
      return r;
  }
  
  CMS_ContentInfo *CMS_data_create(BIO *in, unsigned int flags)
  {
      CMS_ContentInfo *cms;
      cms = cms_Data_create();
      if (!cms)
          return NULL;
  
      if ((flags & CMS_STREAM) || CMS_final(cms, in, NULL, flags))
          return cms;
  
      CMS_ContentInfo_free(cms);
  
      return NULL;
  }
  
  int CMS_digest_verify(CMS_ContentInfo *cms, BIO *dcont, BIO *out,
                        unsigned int flags)
  {
      BIO *cont;
      int r;
      if (OBJ_obj2nid(CMS_get0_type(cms)) != NID_pkcs7_digest) {
          CMSerr(CMS_F_CMS_DIGEST_VERIFY, CMS_R_TYPE_NOT_DIGESTED_DATA);
          return 0;
      }
  
      if (!dcont && !check_content(cms))
          return 0;
  
      cont = CMS_dataInit(cms, dcont);
      if (!cont)
          return 0;
      r = cms_copy_content(out, cont, flags);
      if (r)
          r = cms_DigestedData_do_final(cms, cont, 1);
      do_free_upto(cont, dcont);
      return r;
  }
  
  CMS_ContentInfo *CMS_digest_create(BIO *in, const EVP_MD *md,
                                     unsigned int flags)
  {
      CMS_ContentInfo *cms;
      if (!md)
          md = EVP_sha1();
      cms = cms_DigestedData_create(md);
      if (!cms)
          return NULL;
  
      if (!(flags & CMS_DETACHED))
          CMS_set_detached(cms, 0);
  
      if ((flags & CMS_STREAM) || CMS_final(cms, in, NULL, flags))
          return cms;
  
      CMS_ContentInfo_free(cms);
      return NULL;
  }
  
  int CMS_EncryptedData_decrypt(CMS_ContentInfo *cms,
                                const unsigned char *key, size_t keylen,
                                BIO *dcont, BIO *out, unsigned int flags)
  {
      BIO *cont;
      int r;
      if (OBJ_obj2nid(CMS_get0_type(cms)) != NID_pkcs7_encrypted) {
          CMSerr(CMS_F_CMS_ENCRYPTEDDATA_DECRYPT,
                 CMS_R_TYPE_NOT_ENCRYPTED_DATA);
          return 0;
      }
  
      if (!dcont && !check_content(cms))
          return 0;
  
      if (CMS_EncryptedData_set1_key(cms, NULL, key, keylen) <= 0)
          return 0;
      cont = CMS_dataInit(cms, dcont);
      if (!cont)
          return 0;
      r = cms_copy_content(out, cont, flags);
      do_free_upto(cont, dcont);
      return r;
  }
  
  CMS_ContentInfo *CMS_EncryptedData_encrypt(BIO *in, const EVP_CIPHER *cipher,
                                             const unsigned char *key,
                                             size_t keylen, unsigned int flags)
  {
      CMS_ContentInfo *cms;
      if (!cipher) {
          CMSerr(CMS_F_CMS_ENCRYPTEDDATA_ENCRYPT, CMS_R_NO_CIPHER);
          return NULL;
      }
      cms = CMS_ContentInfo_new();
      if (cms == NULL)
          return NULL;
      if (!CMS_EncryptedData_set1_key(cms, cipher, key, keylen))
          return NULL;
  
      if (!(flags & CMS_DETACHED))
          CMS_set_detached(cms, 0);
  
      if ((flags & (CMS_STREAM | CMS_PARTIAL))
          || CMS_final(cms, in, NULL, flags))
          return cms;
  
      CMS_ContentInfo_free(cms);
      return NULL;
  }
  
  static int cms_signerinfo_verify_cert(CMS_SignerInfo *si,
                                        X509_STORE *store,
                                        STACK_OF(X509) *certs,
                                        STACK_OF(X509_CRL) *crls)
  {
      X509_STORE_CTX *ctx = X509_STORE_CTX_new();
      X509 *signer;
      int i, j, r = 0;
  
      if (ctx == NULL) {
          CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY_CERT, ERR_R_MALLOC_FAILURE);
          goto err;
      }
      CMS_SignerInfo_get0_algs(si, NULL, &signer, NULL, NULL);
      if (!X509_STORE_CTX_init(ctx, store, signer, certs)) {
          CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY_CERT, CMS_R_STORE_INIT_ERROR);
          goto err;
      }
      X509_STORE_CTX_set_default(ctx, "smime_sign");
      if (crls)
          X509_STORE_CTX_set0_crls(ctx, crls);
  
      i = X509_verify_cert(ctx);
      if (i <= 0) {
          j = X509_STORE_CTX_get_error(ctx);
          CMSerr(CMS_F_CMS_SIGNERINFO_VERIFY_CERT,
                 CMS_R_CERTIFICATE_VERIFY_ERROR);
          ERR_add_error_data(2, "Verify error:",
                             X509_verify_cert_error_string(j));
          goto err;
      }
      r = 1;
   err:
      X509_STORE_CTX_free(ctx);
      return r;
  
  }
  
  int CMS_verify(CMS_ContentInfo *cms, STACK_OF(X509) *certs,
                 X509_STORE *store, BIO *dcont, BIO *out, unsigned int flags)
  {
      CMS_SignerInfo *si;
      STACK_OF(CMS_SignerInfo) *sinfos;
      STACK_OF(X509) *cms_certs = NULL;
      STACK_OF(X509_CRL) *crls = NULL;
      X509 *signer;
      int i, scount = 0, ret = 0;
      BIO *cmsbio = NULL, *tmpin = NULL, *tmpout = NULL;
  
      if (!dcont && !check_content(cms))
          return 0;
      if (dcont && !(flags & CMS_BINARY)) {
          const ASN1_OBJECT *coid = CMS_get0_eContentType(cms);
          if (OBJ_obj2nid(coid) == NID_id_ct_asciiTextWithCRLF)
              flags |= CMS_ASCIICRLF;
      }
  
      /* Attempt to find all signer certificates */
  
      sinfos = CMS_get0_SignerInfos(cms);
  
      if (sk_CMS_SignerInfo_num(sinfos) <= 0) {
          CMSerr(CMS_F_CMS_VERIFY, CMS_R_NO_SIGNERS);
          goto err;
      }
  
      for (i = 0; i < sk_CMS_SignerInfo_num(sinfos); i++) {
          si = sk_CMS_SignerInfo_value(sinfos, i);
          CMS_SignerInfo_get0_algs(si, NULL, &signer, NULL, NULL);
          if (signer)
              scount++;
      }
  
      if (scount != sk_CMS_SignerInfo_num(sinfos))
          scount += CMS_set1_signers_certs(cms, certs, flags);
  
      if (scount != sk_CMS_SignerInfo_num(sinfos)) {
          CMSerr(CMS_F_CMS_VERIFY, CMS_R_SIGNER_CERTIFICATE_NOT_FOUND);
          goto err;
      }
  
      /* Attempt to verify all signers certs */
  
      if (!(flags & CMS_NO_SIGNER_CERT_VERIFY)) {
          cms_certs = CMS_get1_certs(cms);
          if (!(flags & CMS_NOCRL))
              crls = CMS_get1_crls(cms);
          for (i = 0; i < sk_CMS_SignerInfo_num(sinfos); i++) {
              si = sk_CMS_SignerInfo_value(sinfos, i);
              if (!cms_signerinfo_verify_cert(si, store, cms_certs, crls))
                  goto err;
          }
      }
  
      /* Attempt to verify all SignerInfo signed attribute signatures */
  
      if (!(flags & CMS_NO_ATTR_VERIFY)) {
          for (i = 0; i < sk_CMS_SignerInfo_num(sinfos); i++) {
              si = sk_CMS_SignerInfo_value(sinfos, i);
              if (CMS_signed_get_attr_count(si) < 0)
                  continue;
              if (CMS_SignerInfo_verify(si) <= 0)
                  goto err;
          }
      }
  
      /*
       * Performance optimization: if the content is a memory BIO then store
       * its contents in a temporary read only memory BIO. This avoids
       * potentially large numbers of slow copies of data which will occur when
       * reading from a read write memory BIO when signatures are calculated.
       */
  
      if (dcont && (BIO_method_type(dcont) == BIO_TYPE_MEM)) {
          char *ptr;
          long len;
          len = BIO_get_mem_data(dcont, &ptr);
          tmpin = BIO_new_mem_buf(ptr, len);
          if (tmpin == NULL) {
              CMSerr(CMS_F_CMS_VERIFY, ERR_R_MALLOC_FAILURE);
              goto err2;
          }
      } else
          tmpin = dcont;
      /*
       * If not binary mode and detached generate digests by *writing* through
       * the BIO. That makes it possible to canonicalise the input.
       */
      if (!(flags & SMIME_BINARY) && dcont) {
          /*
           * Create output BIO so we can either handle text or to ensure
           * included content doesn't override detached content.
           */
          tmpout = cms_get_text_bio(out, flags);
          if (!tmpout) {
              CMSerr(CMS_F_CMS_VERIFY, ERR_R_MALLOC_FAILURE);
              goto err;
          }
          cmsbio = CMS_dataInit(cms, tmpout);
          if (!cmsbio)
              goto err;
          /*
           * Don't use SMIME_TEXT for verify: it adds headers and we want to
           * remove them.
           */
          SMIME_crlf_copy(dcont, cmsbio, flags & ~SMIME_TEXT);
  
          if (flags & CMS_TEXT) {
              if (!SMIME_text(tmpout, out)) {
                  CMSerr(CMS_F_CMS_VERIFY, CMS_R_SMIME_TEXT_ERROR);
                  goto err;
              }
          }
      } else {
          cmsbio = CMS_dataInit(cms, tmpin);
          if (!cmsbio)
              goto err;
  
          if (!cms_copy_content(out, cmsbio, flags))
              goto err;
  
      }
      if (!(flags & CMS_NO_CONTENT_VERIFY)) {
          for (i = 0; i < sk_CMS_SignerInfo_num(sinfos); i++) {
              si = sk_CMS_SignerInfo_value(sinfos, i);
              if (CMS_SignerInfo_verify_content(si, cmsbio) <= 0) {
                  CMSerr(CMS_F_CMS_VERIFY, CMS_R_CONTENT_VERIFY_ERROR);
                  goto err;
              }
          }
      }
  
      ret = 1;
  
   err:
      if (!(flags & SMIME_BINARY) && dcont) {
          do_free_upto(cmsbio, tmpout);
          if (tmpin != dcont)
              BIO_free(tmpin);
      } else {
          if (dcont && (tmpin == dcont))
              do_free_upto(cmsbio, dcont);
          else
              BIO_free_all(cmsbio);
      }
  
      if (out != tmpout)
          BIO_free_all(tmpout);
  
   err2:
      sk_X509_pop_free(cms_certs, X509_free);
      sk_X509_CRL_pop_free(crls, X509_CRL_free);
  
      return ret;
  }
  
  int CMS_verify_receipt(CMS_ContentInfo *rcms, CMS_ContentInfo *ocms,
                         STACK_OF(X509) *certs,
                         X509_STORE *store, unsigned int flags)
  {
      int r;
      flags &= ~(CMS_DETACHED | CMS_TEXT);
      r = CMS_verify(rcms, certs, store, NULL, NULL, flags);
      if (r <= 0)
          return r;
      return cms_Receipt_verify(rcms, ocms);
  }
  
  CMS_ContentInfo *CMS_sign(X509 *signcert, EVP_PKEY *pkey,
                            STACK_OF(X509) *certs, BIO *data,
                            unsigned int flags)
  {
      CMS_ContentInfo *cms;
      int i;
  
      cms = CMS_ContentInfo_new();
      if (cms == NULL || !CMS_SignedData_init(cms))
          goto merr;
      if (flags & CMS_ASCIICRLF
          && !CMS_set1_eContentType(cms,
                                    OBJ_nid2obj(NID_id_ct_asciiTextWithCRLF)))
          goto err;
  
      if (pkey && !CMS_add1_signer(cms, signcert, pkey, NULL, flags)) {
          CMSerr(CMS_F_CMS_SIGN, CMS_R_ADD_SIGNER_ERROR);
          goto err;
      }
  
      for (i = 0; i < sk_X509_num(certs); i++) {
          X509 *x = sk_X509_value(certs, i);
          if (!CMS_add1_cert(cms, x))
              goto merr;
      }
  
      if (!(flags & CMS_DETACHED))
          CMS_set_detached(cms, 0);
  
      if ((flags & (CMS_STREAM | CMS_PARTIAL))
          || CMS_final(cms, data, NULL, flags))
          return cms;
      else
          goto err;
  
   merr:
      CMSerr(CMS_F_CMS_SIGN, ERR_R_MALLOC_FAILURE);
  
   err:
      CMS_ContentInfo_free(cms);
      return NULL;
  }
  
  CMS_ContentInfo *CMS_sign_receipt(CMS_SignerInfo *si,
                                    X509 *signcert, EVP_PKEY *pkey,
                                    STACK_OF(X509) *certs, unsigned int flags)
  {
      CMS_SignerInfo *rct_si;
      CMS_ContentInfo *cms = NULL;
      ASN1_OCTET_STRING **pos, *os;
      BIO *rct_cont = NULL;
      int r = 0;
  
      flags &= ~(CMS_STREAM | CMS_TEXT);
      /* Not really detached but avoids content being allocated */
      flags |= CMS_PARTIAL | CMS_BINARY | CMS_DETACHED;
      if (!pkey || !signcert) {
          CMSerr(CMS_F_CMS_SIGN_RECEIPT, CMS_R_NO_KEY_OR_CERT);
          return NULL;
      }
  
      /* Initialize signed data */
  
      cms = CMS_sign(NULL, NULL, certs, NULL, flags);
      if (!cms)
          goto err;
  
      /* Set inner content type to signed receipt */
      if (!CMS_set1_eContentType(cms, OBJ_nid2obj(NID_id_smime_ct_receipt)))
          goto err;
  
      rct_si = CMS_add1_signer(cms, signcert, pkey, NULL, flags);
      if (!rct_si) {
          CMSerr(CMS_F_CMS_SIGN_RECEIPT, CMS_R_ADD_SIGNER_ERROR);
          goto err;
      }
  
      os = cms_encode_Receipt(si);
  
      if (!os)
          goto err;
  
      /* Set content to digest */
      rct_cont = BIO_new_mem_buf(os->data, os->length);
      if (!rct_cont)
          goto err;
  
      /* Add msgSigDigest attribute */
  
      if (!cms_msgSigDigest_add1(rct_si, si))
          goto err;
  
      /* Finalize structure */
      if (!CMS_final(cms, rct_cont, NULL, flags))
          goto err;
  
      /* Set embedded content */
      pos = CMS_get0_content(cms);
      *pos = os;
  
      r = 1;
  
   err:
      BIO_free(rct_cont);
      if (r)
          return cms;
      CMS_ContentInfo_free(cms);
      return NULL;
  
  }
  
  CMS_ContentInfo *CMS_encrypt(STACK_OF(X509) *certs, BIO *data,
                               const EVP_CIPHER *cipher, unsigned int flags)
  {
      CMS_ContentInfo *cms;
      int i;
      X509 *recip;
      cms = CMS_EnvelopedData_create(cipher);
      if (!cms)
          goto merr;
      for (i = 0; i < sk_X509_num(certs); i++) {
          recip = sk_X509_value(certs, i);
          if (!CMS_add1_recipient_cert(cms, recip, flags)) {
              CMSerr(CMS_F_CMS_ENCRYPT, CMS_R_RECIPIENT_ERROR);
              goto err;
          }
      }
  
      if (!(flags & CMS_DETACHED))
          CMS_set_detached(cms, 0);
  
      if ((flags & (CMS_STREAM | CMS_PARTIAL))
          || CMS_final(cms, data, NULL, flags))
          return cms;
      else
          goto err;
  
   merr:
      CMSerr(CMS_F_CMS_ENCRYPT, ERR_R_MALLOC_FAILURE);
   err:
      CMS_ContentInfo_free(cms);
      return NULL;
  }
  
  static int cms_kari_set1_pkey(CMS_ContentInfo *cms, CMS_RecipientInfo *ri,
                                EVP_PKEY *pk, X509 *cert)
  {
      int i;
      STACK_OF(CMS_RecipientEncryptedKey) *reks;
      CMS_RecipientEncryptedKey *rek;
      reks = CMS_RecipientInfo_kari_get0_reks(ri);
      for (i = 0; i < sk_CMS_RecipientEncryptedKey_num(reks); i++) {
          int rv;
          rek = sk_CMS_RecipientEncryptedKey_value(reks, i);
          if (cert != NULL && CMS_RecipientEncryptedKey_cert_cmp(rek, cert))
              continue;
          CMS_RecipientInfo_kari_set0_pkey(ri, pk);
          rv = CMS_RecipientInfo_kari_decrypt(cms, ri, rek);
          CMS_RecipientInfo_kari_set0_pkey(ri, NULL);
          if (rv > 0)
              return 1;
          return cert == NULL ? 0 : -1;
      }
      return 0;
  }
  
  int CMS_decrypt_set1_pkey(CMS_ContentInfo *cms, EVP_PKEY *pk, X509 *cert)
  {
      STACK_OF(CMS_RecipientInfo) *ris;
      CMS_RecipientInfo *ri;
      int i, r, ri_type;
      int debug = 0, match_ri = 0;
      ris = CMS_get0_RecipientInfos(cms);
      if (ris)
          debug = cms->d.envelopedData->encryptedContentInfo->debug;
      ri_type = cms_pkey_get_ri_type(pk);
      if (ri_type == CMS_RECIPINFO_NONE) {
          CMSerr(CMS_F_CMS_DECRYPT_SET1_PKEY,
                 CMS_R_NOT_SUPPORTED_FOR_THIS_KEY_TYPE);
          return 0;
      }
  
      for (i = 0; i < sk_CMS_RecipientInfo_num(ris); i++) {
          ri = sk_CMS_RecipientInfo_value(ris, i);
          if (CMS_RecipientInfo_type(ri) != ri_type)
              continue;
          match_ri = 1;
          if (ri_type == CMS_RECIPINFO_AGREE) {
              r = cms_kari_set1_pkey(cms, ri, pk, cert);
              if (r > 0)
                  return 1;
              if (r < 0)
                  return 0;
          }
          /*
           * If we have a cert try matching RecipientInfo otherwise try them
           * all.
           */
          else if (!cert || !CMS_RecipientInfo_ktri_cert_cmp(ri, cert)) {
              EVP_PKEY_up_ref(pk);
              CMS_RecipientInfo_set0_pkey(ri, pk);
              r = CMS_RecipientInfo_decrypt(cms, ri);
              CMS_RecipientInfo_set0_pkey(ri, NULL);
              if (cert) {
                  /*
                   * If not debugging clear any error and return success to
                   * avoid leaking of information useful to MMA
                   */
                  if (!debug) {
                      ERR_clear_error();
                      return 1;
                  }
                  if (r > 0)
                      return 1;
                  CMSerr(CMS_F_CMS_DECRYPT_SET1_PKEY, CMS_R_DECRYPT_ERROR);
                  return 0;
              }
              /*
               * If no cert and not debugging don't leave loop after first
               * successful decrypt. Always attempt to decrypt all recipients
               * to avoid leaking timing of a successful decrypt.
               */
              else if (r > 0 && debug)
                  return 1;
          }
      }
      /* If no cert, key transport and not debugging always return success */
      if (cert == NULL && ri_type == CMS_RECIPINFO_TRANS && match_ri && !debug) {
          ERR_clear_error();
          return 1;
      }
  
      CMSerr(CMS_F_CMS_DECRYPT_SET1_PKEY, CMS_R_NO_MATCHING_RECIPIENT);
      return 0;
  
  }
  
  int CMS_decrypt_set1_key(CMS_ContentInfo *cms,
                           unsigned char *key, size_t keylen,
                           const unsigned char *id, size_t idlen)
  {
      STACK_OF(CMS_RecipientInfo) *ris;
      CMS_RecipientInfo *ri;
      int i, r;
      ris = CMS_get0_RecipientInfos(cms);
      for (i = 0; i < sk_CMS_RecipientInfo_num(ris); i++) {
          ri = sk_CMS_RecipientInfo_value(ris, i);
          if (CMS_RecipientInfo_type(ri) != CMS_RECIPINFO_KEK)
              continue;
  
          /*
           * If we have an id try matching RecipientInfo otherwise try them
           * all.
           */
          if (!id || (CMS_RecipientInfo_kekri_id_cmp(ri, id, idlen) == 0)) {
              CMS_RecipientInfo_set0_key(ri, key, keylen);
              r = CMS_RecipientInfo_decrypt(cms, ri);
              CMS_RecipientInfo_set0_key(ri, NULL, 0);
              if (r > 0)
                  return 1;
              if (id) {
                  CMSerr(CMS_F_CMS_DECRYPT_SET1_KEY, CMS_R_DECRYPT_ERROR);
                  return 0;
              }
              ERR_clear_error();
          }
      }
  
      CMSerr(CMS_F_CMS_DECRYPT_SET1_KEY, CMS_R_NO_MATCHING_RECIPIENT);
      return 0;
  
  }
  
  int CMS_decrypt_set1_password(CMS_ContentInfo *cms,
                                unsigned char *pass, ossl_ssize_t passlen)
  {
      STACK_OF(CMS_RecipientInfo) *ris;
      CMS_RecipientInfo *ri;
      int i, r;
      ris = CMS_get0_RecipientInfos(cms);
      for (i = 0; i < sk_CMS_RecipientInfo_num(ris); i++) {
          ri = sk_CMS_RecipientInfo_value(ris, i);
          if (CMS_RecipientInfo_type(ri) != CMS_RECIPINFO_PASS)
              continue;
          CMS_RecipientInfo_set0_password(ri, pass, passlen);
          r = CMS_RecipientInfo_decrypt(cms, ri);
          CMS_RecipientInfo_set0_password(ri, NULL, 0);
          if (r > 0)
              return 1;
      }
  
      CMSerr(CMS_F_CMS_DECRYPT_SET1_PASSWORD, CMS_R_NO_MATCHING_RECIPIENT);
      return 0;
  
  }
  
  int CMS_decrypt(CMS_ContentInfo *cms, EVP_PKEY *pk, X509 *cert,
                  BIO *dcont, BIO *out, unsigned int flags)
  {
      int r;
      BIO *cont;
      if (OBJ_obj2nid(CMS_get0_type(cms)) != NID_pkcs7_enveloped) {
          CMSerr(CMS_F_CMS_DECRYPT, CMS_R_TYPE_NOT_ENVELOPED_DATA);
          return 0;
      }
      if (!dcont && !check_content(cms))
          return 0;
      if (flags & CMS_DEBUG_DECRYPT)
          cms->d.envelopedData->encryptedContentInfo->debug = 1;
      else
          cms->d.envelopedData->encryptedContentInfo->debug = 0;
      if (!pk && !cert && !dcont && !out)
          return 1;
      if (pk && !CMS_decrypt_set1_pkey(cms, pk, cert))
          return 0;
      cont = CMS_dataInit(cms, dcont);
      if (!cont)
          return 0;
      r = cms_copy_content(out, cont, flags);
      do_free_upto(cont, dcont);
      return r;
  }
  
  int CMS_final(CMS_ContentInfo *cms, BIO *data, BIO *dcont, unsigned int flags)
  {
      BIO *cmsbio;
      int ret = 0;
  
      if ((cmsbio = CMS_dataInit(cms, dcont)) == NULL) {
          CMSerr(CMS_F_CMS_FINAL, CMS_R_CMS_LIB);
          return 0;
      }
  
      SMIME_crlf_copy(data, cmsbio, flags);
  
      (void)BIO_flush(cmsbio);
  
      if (!CMS_dataFinal(cms, cmsbio)) {
          CMSerr(CMS_F_CMS_FINAL, CMS_R_CMS_DATAFINAL_ERROR);
          goto err;
      }
  
      ret = 1;
  
   err:
      do_free_upto(cmsbio, dcont);
  
      return ret;
  
  }
  
  #ifdef ZLIB
  
  int CMS_uncompress(CMS_ContentInfo *cms, BIO *dcont, BIO *out,
                     unsigned int flags)
  {
      BIO *cont;
      int r;
      if (OBJ_obj2nid(CMS_get0_type(cms)) != NID_id_smime_ct_compressedData) {
          CMSerr(CMS_F_CMS_UNCOMPRESS, CMS_R_TYPE_NOT_COMPRESSED_DATA);
          return 0;
      }
  
      if (!dcont && !check_content(cms))
          return 0;
  
      cont = CMS_dataInit(cms, dcont);
      if (!cont)
          return 0;
      r = cms_copy_content(out, cont, flags);
      do_free_upto(cont, dcont);
      return r;
  }
  
  CMS_ContentInfo *CMS_compress(BIO *in, int comp_nid, unsigned int flags)
  {
      CMS_ContentInfo *cms;
      if (comp_nid <= 0)
          comp_nid = NID_zlib_compression;
      cms = cms_CompressedData_create(comp_nid);
      if (!cms)
          return NULL;
  
      if (!(flags & CMS_DETACHED))
          CMS_set_detached(cms, 0);
  
      if ((flags & CMS_STREAM) || CMS_final(cms, in, NULL, flags))
          return cms;
  
      CMS_ContentInfo_free(cms);
      return NULL;
  }
  
  #else
  
  int CMS_uncompress(CMS_ContentInfo *cms, BIO *dcont, BIO *out,
                     unsigned int flags)
  {
      CMSerr(CMS_F_CMS_UNCOMPRESS, CMS_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
      return 0;
  }
  
  CMS_ContentInfo *CMS_compress(BIO *in, int comp_nid, unsigned int flags)
  {
      CMSerr(CMS_F_CMS_COMPRESS, CMS_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
      return NULL;
  }
  
  #endif
  