src/streams/tls.c

   1 /*
   2  * Copyright (C) the libgit2 contributors. All rights reserved.
   3  *
   4  * This file is part of libgit2, distributed under the GNU GPL v2 with
   5  * a Linking Exception. For full terms see the included COPYING file.
   6  */
   7
   8 #include "git2/errors.h"
   9
  10 #include "common.h"
  11 #include "streams/registry.h"
  12 #include "streams/tls.h"
  13 #include "streams/mbedtls.h"
  14 #include "streams/openssl.h"
  15 #include "streams/stransport.h"
  16
  17 int git_tls_stream_new(git_stream **out, const char *host, const char *port)
  18 {
  19         int (*init)(git_stream **, const char *, const char *) = NULL;
  20         git_stream_registration custom = {0};
  21         int error;
  22
  23         GIT_ASSERT_ARG(out);
  24         GIT_ASSERT_ARG(host);
  25         GIT_ASSERT_ARG(port);
  26
  27         if ((error = git_stream_registry_lookup(&custom, GIT_STREAM_TLS)) == 0) {
  28                 init = custom.init;
  29         } else if (error == GIT_ENOTFOUND) {
  30 #ifdef GIT_SECURE_TRANSPORT
  31                 init = git_stransport_stream_new;
  32 #elif defined(GIT_OPENSSL)
  33                 init = git_openssl_stream_new;
  34 #elif defined(GIT_MBEDTLS)
  35                 init = git_mbedtls_stream_new;
  36 #endif
  37         } else {
  38                 return error;
  39         }
  40
  41         if (!init) {
  42                 git_error_set(GIT_ERROR_SSL, "there is no TLS stream available");
  43                 return -1;
  44         }
  45
  46         return init(out, host, port);
  47 }
  48
  49 int git_tls_stream_wrap(git_stream **out, git_stream *in, const char *host)
  50 {
  51         int (*wrap)(git_stream **, git_stream *, const char *) = NULL;
  52         git_stream_registration custom = {0};
  53
  54         GIT_ASSERT_ARG(out);
  55         GIT_ASSERT_ARG(in);
  56
  57         if (git_stream_registry_lookup(&custom, GIT_STREAM_TLS) == 0) {
  58                 wrap = custom.wrap;
  59         } else {
  60 #ifdef GIT_SECURE_TRANSPORT
  61                 wrap = git_stransport_stream_wrap;
  62 #elif defined(GIT_OPENSSL)
  63                 wrap = git_openssl_stream_wrap;
  64 #elif defined(GIT_MBEDTLS)
  65                 wrap = git_mbedtls_stream_wrap;
  66 #endif
  67         }
  68
  69         if (!wrap) {
  70                 git_error_set(GIT_ERROR_SSL, "there is no TLS stream available");
  71                 return -1;
  72         }
  73
  74         return wrap(out, in, host);
  75 }