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 "global.h"
  12 #include "streams/registry.h"
  13 #include "streams/tls.h"
  14 #include "streams/mbedtls.h"
  15 #include "streams/openssl.h"
  16 #include "streams/stransport.h"
  17
  18 int git_tls_stream_new(git_stream **out, const char *host, const char *port)
  19 {
  20         int (*init)(git_stream **, const char *, const char *) = NULL;
  21         git_stream_registration custom = {0};
  22         int error;
  23
  24         assert(out && host && port);
  25
  26         if ((error = git_stream_registry_lookup(&custom, GIT_STREAM_TLS)) == 0) {
  27                 init = custom.init;
  28         } else if (error == GIT_ENOTFOUND) {
  29 #ifdef GIT_SECURE_TRANSPORT
  30                 init = git_stransport_stream_new;
  31 #elif defined(GIT_OPENSSL)
  32                 init = git_openssl_stream_new;
  33 #elif defined(GIT_MBEDTLS)
  34                 init = git_mbedtls_stream_new;
  35 #endif
  36         } else {
  37                 return error;
  38         }
  39
  40         if (!init) {
  41                 git_error_set(GIT_ERROR_SSL, "there is no TLS stream available");
  42                 return -1;
  43         }
  44
  45         return init(out, host, port);
  46 }
  47
  48 int git_tls_stream_wrap(git_stream **out, git_stream *in, const char *host)
  49 {
  50         int (*wrap)(git_stream **, git_stream *, const char *) = NULL;
  51         git_stream_registration custom = {0};
  52
  53         assert(out && in);
  54
  55         if (git_stream_registry_lookup(&custom, GIT_STREAM_TLS) == 0) {
  56                 wrap = custom.wrap;
  57         } else {
  58 #ifdef GIT_SECURE_TRANSPORT
  59                 wrap = git_stransport_stream_wrap;
  60 #elif defined(GIT_OPENSSL)
  61                 wrap = git_openssl_stream_wrap;
  62 #elif defined(GIT_MBEDTLS)
  63                 wrap = git_mbedtls_stream_wrap;
  64 #endif
  65         }
  66
  67         if (!wrap) {
  68                 git_error_set(GIT_ERROR_SSL, "there is no TLS stream available");
  69                 return -1;
  70         }
  71
  72         return wrap(out, in, host);
  73 }