pk7_mime.c 2.2 KB

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  1. /*
  2. * Copyright 1999-2024 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. #include <stdio.h>
  10. #include "internal/cryptlib.h"
  11. #include <openssl/x509.h>
  12. #include <openssl/asn1.h>
  13. #include "pk7_local.h"
  14. /* PKCS#7 wrappers round generalised stream and MIME routines */
  15. int i2d_PKCS7_bio_stream(BIO *out, PKCS7 *p7, BIO *in, int flags)
  16. {
  17. return i2d_ASN1_bio_stream(out, (ASN1_VALUE *)p7, in, flags,
  18. ASN1_ITEM_rptr(PKCS7));
  19. }
  20. int PEM_write_bio_PKCS7_stream(BIO *out, PKCS7 *p7, BIO *in, int flags)
  21. {
  22. return PEM_write_bio_ASN1_stream(out, (ASN1_VALUE *)p7, in, flags,
  23. "PKCS7", ASN1_ITEM_rptr(PKCS7));
  24. }
  25. int SMIME_write_PKCS7(BIO *bio, PKCS7 *p7, BIO *data, int flags)
  26. {
  27. STACK_OF(X509_ALGOR) *mdalgs;
  28. int ctype_nid = OBJ_obj2nid(p7->type);
  29. const PKCS7_CTX *ctx = ossl_pkcs7_get0_ctx(p7);
  30. if (ctype_nid == NID_pkcs7_signed) {
  31. if (p7->d.sign == NULL)
  32. return 0;
  33. mdalgs = p7->d.sign->md_algs;
  34. } else {
  35. mdalgs = NULL;
  36. }
  37. flags ^= SMIME_OLDMIME;
  38. return SMIME_write_ASN1_ex(bio, (ASN1_VALUE *)p7, data, flags, ctype_nid,
  39. NID_undef, mdalgs, ASN1_ITEM_rptr(PKCS7),
  40. ossl_pkcs7_ctx_get0_libctx(ctx),
  41. ossl_pkcs7_ctx_get0_propq(ctx));
  42. }
  43. PKCS7 *SMIME_read_PKCS7_ex(BIO *bio, BIO **bcont, PKCS7 **p7)
  44. {
  45. PKCS7 *ret;
  46. OSSL_LIB_CTX *libctx = NULL;
  47. const char *propq = NULL;
  48. if (p7 != NULL && *p7 != NULL) {
  49. libctx = (*p7)->ctx.libctx;
  50. propq = (*p7)->ctx.propq;
  51. }
  52. ret = (PKCS7 *)SMIME_read_ASN1_ex(bio, 0, bcont, ASN1_ITEM_rptr(PKCS7),
  53. (ASN1_VALUE **)p7, libctx, propq);
  54. if (ret != NULL)
  55. ossl_pkcs7_resolve_libctx(ret);
  56. return ret;
  57. }
  58. PKCS7 *SMIME_read_PKCS7(BIO *bio, BIO **bcont)
  59. {
  60. return SMIME_read_PKCS7_ex(bio, bcont, NULL);
  61. }