cms_cd.c 4.4 KB

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  1. /* crypto/cms/cms_cd.c */
  2. /*
  3. * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
  4. * project.
  5. */
  6. /* ====================================================================
  7. * Copyright (c) 2008 The OpenSSL Project. All rights reserved.
  8. *
  9. * Redistribution and use in source and binary forms, with or without
  10. * modification, are permitted provided that the following conditions
  11. * are met:
  12. *
  13. * 1. Redistributions of source code must retain the above copyright
  14. * notice, this list of conditions and the following disclaimer.
  15. *
  16. * 2. Redistributions in binary form must reproduce the above copyright
  17. * notice, this list of conditions and the following disclaimer in
  18. * the documentation and/or other materials provided with the
  19. * distribution.
  20. *
  21. * 3. All advertising materials mentioning features or use of this
  22. * software must display the following acknowledgment:
  23. * "This product includes software developed by the OpenSSL Project
  24. * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
  25. *
  26. * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
  27. * endorse or promote products derived from this software without
  28. * prior written permission. For written permission, please contact
  29. * licensing@OpenSSL.org.
  30. *
  31. * 5. Products derived from this software may not be called "OpenSSL"
  32. * nor may "OpenSSL" appear in their names without prior written
  33. * permission of the OpenSSL Project.
  34. *
  35. * 6. Redistributions of any form whatsoever must retain the following
  36. * acknowledgment:
  37. * "This product includes software developed by the OpenSSL Project
  38. * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
  39. *
  40. * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  41. * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  42. * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  43. * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
  44. * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  45. * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  46. * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  47. * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  48. * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  49. * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  50. * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  51. * OF THE POSSIBILITY OF SUCH DAMAGE.
  52. * ====================================================================
  53. */
  54. #include "internal/cryptlib.h"
  55. #include <openssl/asn1t.h>
  56. #include <openssl/pem.h>
  57. #include <openssl/x509v3.h>
  58. #include <openssl/err.h>
  59. #include <openssl/cms.h>
  60. #include <openssl/bio.h>
  61. #ifndef OPENSSL_NO_COMP
  62. # include <openssl/comp.h>
  63. #endif
  64. #include "cms_lcl.h"
  65. #ifdef ZLIB
  66. /* CMS CompressedData Utilities */
  67. CMS_ContentInfo *cms_CompressedData_create(int comp_nid)
  68. {
  69. CMS_ContentInfo *cms;
  70. CMS_CompressedData *cd;
  71. /*
  72. * Will need something cleverer if there is ever more than one
  73. * compression algorithm or parameters have some meaning...
  74. */
  75. if (comp_nid != NID_zlib_compression) {
  76. CMSerr(CMS_F_CMS_COMPRESSEDDATA_CREATE,
  77. CMS_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
  78. return NULL;
  79. }
  80. cms = CMS_ContentInfo_new();
  81. if (cms == NULL)
  82. return NULL;
  83. cd = M_ASN1_new_of(CMS_CompressedData);
  84. if (cd == NULL)
  85. goto err;
  86. cms->contentType = OBJ_nid2obj(NID_id_smime_ct_compressedData);
  87. cms->d.compressedData = cd;
  88. cd->version = 0;
  89. X509_ALGOR_set0(cd->compressionAlgorithm,
  90. OBJ_nid2obj(NID_zlib_compression), V_ASN1_UNDEF, NULL);
  91. cd->encapContentInfo->eContentType = OBJ_nid2obj(NID_pkcs7_data);
  92. return cms;
  93. err:
  94. CMS_ContentInfo_free(cms);
  95. return NULL;
  96. }
  97. BIO *cms_CompressedData_init_bio(CMS_ContentInfo *cms)
  98. {
  99. CMS_CompressedData *cd;
  100. ASN1_OBJECT *compoid;
  101. if (OBJ_obj2nid(cms->contentType) != NID_id_smime_ct_compressedData) {
  102. CMSerr(CMS_F_CMS_COMPRESSEDDATA_INIT_BIO,
  103. CMS_R_CONTENT_TYPE_NOT_COMPRESSED_DATA);
  104. return NULL;
  105. }
  106. cd = cms->d.compressedData;
  107. X509_ALGOR_get0(&compoid, NULL, NULL, cd->compressionAlgorithm);
  108. if (OBJ_obj2nid(compoid) != NID_zlib_compression) {
  109. CMSerr(CMS_F_CMS_COMPRESSEDDATA_INIT_BIO,
  110. CMS_R_UNSUPPORTED_COMPRESSION_ALGORITHM);
  111. return NULL;
  112. }
  113. return BIO_new(BIO_f_zlib());
  114. }
  115. #endif