src/transport.c

   1 /*
   2  * Copyright (C) 2009-2011 the libgit2 contributors
   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 #include "common.h"
   8 #include "git2/types.h"
   9 #include "git2/remote.h"
  10 #include "git2/net.h"
  11 #include "transport.h"
  12
  13 static struct {
  14         char *prefix;
  15         git_transport_cb fn;
  16 } transports[] = {
  17         {"git://", git_transport_git},
  18         {"http://", git_transport_http},
  19         {"https://", git_transport_dummy},
  20         {"file://", git_transport_local},
  21         {"git+ssh://", git_transport_dummy},
  22         {"ssh+git://", git_transport_dummy},
  23         {NULL, 0}
  24 };
  25
  26 #define GIT_TRANSPORT_COUNT (sizeof(transports)/sizeof(transports[0])) - 1
  27
  28 static git_transport_cb transport_find_fn(const char *url)
  29 {
  30         size_t i = 0;
  31
  32          /* TODO: Parse "example.com:project.git" as an SSH URL */
  33
  34         for (i = 0; i < GIT_TRANSPORT_COUNT; ++i) {
  35                 if (!strncasecmp(url, transports[i].prefix, strlen(transports[i].prefix)))
  36                         return transports[i].fn;
  37         }
  38
  39         return NULL;
  40 }
  41
  42 /**************
  43  * Public API *
  44  **************/
  45
  46 int git_transport_dummy(git_transport **GIT_UNUSED(transport))
  47 {
  48         GIT_UNUSED_ARG(transport);
  49         return git__throw(GIT_ENOTIMPLEMENTED, "This protocol isn't implemented. Sorry");
  50 }
  51
  52 int git_transport_new(git_transport **out, const char *url)
  53 {
  54         git_transport_cb fn;
  55         git_transport *transport;
  56         int error;
  57
  58         fn = transport_find_fn(url);
  59
  60         /*
  61          * If we haven't found the transport, we assume we mean a
  62          * local file.
  63          */
  64         if (fn == NULL)
  65                 fn = &git_transport_local;
  66
  67         error = fn(&transport);
  68         if (error < GIT_SUCCESS)
  69                 return git__rethrow(error, "Failed to create new transport");
  70
  71         transport->url = git__strdup(url);
  72         if (transport->url == NULL)
  73                 return GIT_ENOMEM;
  74
  75         *out = transport;
  76
  77         return GIT_SUCCESS;
  78 }
  79
  80 /* from remote.h */
  81 int git_remote_valid_url(const char *url)
  82 {
  83         return transport_find_fn(url) != NULL;
  84 }
  85