mono/btls/btls-x509-chain.c

   1 //
   2 //  btls-x509-chain.c
   3 //  MonoBtls
   4 //
   5 //  Created by Martin Baulig on 3/3/16.
   6 //  Copyright © 2016 Xamarin. All rights reserved.
   7 //
   8
   9 #include "btls-x509-chain.h"
  10
  11 struct MonoBtlsX509Chain {
  12         STACK_OF(X509) *certs;
  13         CRYPTO_refcount_t references;
  14 };
  15
  16 MonoBtlsX509Chain *
  17 mono_btls_x509_chain_new (void)
  18 {
  19         MonoBtlsX509Chain *chain = (MonoBtlsX509Chain *)OPENSSL_malloc (sizeof (MonoBtlsX509Chain));
  20         if (chain == NULL)
  21                 return NULL;
  22
  23         memset(chain, 0, sizeof(MonoBtlsX509Chain));
  24         chain->certs = sk_X509_new_null ();
  25         chain->references = 1;
  26         return chain;
  27 }
  28
  29 MonoBtlsX509Chain *
  30 mono_btls_x509_chain_from_certs (STACK_OF(X509) *certs)
  31 {
  32         MonoBtlsX509Chain *chain = (MonoBtlsX509Chain *)OPENSSL_malloc (sizeof (MonoBtlsX509Chain));
  33         if (chain == NULL)
  34                 return NULL;
  35
  36         memset(chain, 0, sizeof(MonoBtlsX509Chain));
  37         chain->certs = X509_chain_up_ref(certs);
  38         chain->references = 1;
  39         return chain;
  40 }
  41
  42 STACK_OF(X509) *
  43 mono_btls_x509_chain_peek_certs (MonoBtlsX509Chain *chain)
  44 {
  45         return chain->certs;
  46 }
  47
  48 int
  49 mono_btls_x509_chain_get_count (MonoBtlsX509Chain *chain)
  50 {
  51         return (int)sk_X509_num(chain->certs);
  52 }
  53
  54 X509 *
  55 mono_btls_x509_chain_get_cert (MonoBtlsX509Chain *chain, int index)
  56 {
  57         X509 *cert;
  58
  59         if ((size_t)index >= sk_X509_num(chain->certs))
  60                 return NULL;
  61         cert = sk_X509_value(chain->certs, index);
  62         if (cert)
  63                 X509_up_ref(cert);
  64         return cert;
  65 }
  66
  67 STACK_OF(X509) *
  68 mono_btls_x509_chain_get_certs (MonoBtlsX509Chain *chain)
  69 {
  70         return chain->certs;
  71 }
  72
  73 int
  74 mono_btls_x509_chain_free (MonoBtlsX509Chain *chain)
  75 {
  76         if (!CRYPTO_refcount_dec_and_test_zero(&chain->references))
  77                 return 0;
  78
  79         sk_X509_pop_free(chain->certs, X509_free);
  80         OPENSSL_free (chain);
  81         return 1;
  82 }
  83
  84 MonoBtlsX509Chain *
  85 mono_btls_x509_chain_up_ref (MonoBtlsX509Chain *chain)
  86 {
  87         CRYPTO_refcount_inc(&chain->references);
  88         return chain;
  89 }
  90
  91 void
  92 mono_btls_x509_chain_add_cert (MonoBtlsX509Chain *chain, X509 *x509)
  93 {
  94         X509_up_ref(x509);
  95         sk_X509_push(chain->certs, x509);
  96 }