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Adding ssh transport logic

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This commit is contained in:
Brad Morgan 2013-05-03 14:53:23 -04:00
parent 8ae55d940f
commit d04c384036
2 changed files with 86 additions and 20 deletions
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6
src/transport.c
View File

@ -30,9 +30,9 @@ static transport_definition transports[] = {
{"http://", 1, git_transport_smart, &http_subtransport_definition},
{"https://", 1, git_transport_smart, &http_subtransport_definition},
{"file://", 1, git_transport_local, NULL},
{"git+ssh://", 1, git_transport_smart, &git_smart_subtransport_ssh},
{"ssh+git://", 1, git_transport_smart, &git_smart_subtransport_ssh},
{"git@", 1, git_transport_smart, &git_smart_subtransport_ssh},
{"git+ssh://", 1, git_transport_smart, &ssh_subtransport_definition},
{"ssh+git://", 1, git_transport_smart, &ssh_subtransport_definition},
{"git@", 1, git_transport_smart, &ssh_subtransport_definition},
{NULL, 0, 0}
};

100
src/transports/ssh.c
View File

@ -13,8 +13,7 @@
#define OWNING_SUBTRANSPORT(s) ((ssh_subtransport *)(s)->parent.subtransport)
static const char prefix_git_ssh[] = "git+ssh://";
static const char prefix_ssh_git[] = "ssh+git://";
static const char prefix_ssh[] = "ssh://";
static const char prefix_git[] = "git@";
static const char cmd_uploadpack[] = "git-upload-pack";
static const char cmd_receivepack[] = "git-receive-pack";
@ -36,7 +35,7 @@ typedef struct {
/*
* Create a git protocol request.
*
* For example: 0035git-upload-pack /libgit2/libgit2\0host=github.com\0
* For example: 0035git-upload-pack /libgit2/libgit2\0
*/
static int gen_proto(git_buf *request, const char *cmd, const char *url)
{
@ -178,6 +177,38 @@ static int ssh_stream_alloc(
return 0;
}
/* Temp */
static int gitssh_extract_url_parts(
char **host,
char **username,
char **path,
const char *url)
{
char *colon, *at;
const char *start;
colon = strchr(url, ':');
at = strchr(url, '@');
if (colon == NULL) {
giterr_set(GITERR_NET, "Malformed URL: missing :");
return -1;
}
start = url;
if (at) {
start = at+1;
*username = git__substrdup(url, at - url);
} else {
*username = "git";
}
*host = git__substrdup(start, colon - start);
*path = colon+1;
return 0;
}
static int _git_uploadpack_ls(
ssh_subtransport *t,
const char *url,
@ -188,8 +219,8 @@ static int _git_uploadpack_ls(
*stream = NULL;
if (!git__prefixcmp(url, prefix_git))
url += strlen(prefix_git);
if (!git__prefixcmp(url, prefix_ssh))
url += strlen(prefix_ssh);
if (ssh_stream_alloc(t, url, cmd_uploadpack, stream) < 0)
return -1;
@ -239,30 +270,65 @@ static int _git_receivepack_ls(
const char *url,
git_smart_subtransport_stream **stream)
{
char *host, *port, *user=NULL, *pass=NULL;
char *host, *path, *user=NULL;
ssh_stream *s;
*stream = NULL;
if (!git__prefixcmp(url, prefix_git))
url += strlen(prefix_git);
if (ssh_stream_alloc(t, url, cmd_receivepack, stream) < 0)
return -1;
s = (ssh_stream *)*stream;
if (gitno_extract_url_parts(&host, &port, &user, &pass, url, GIT_DEFAULT_PORT) < 0)
if (gitssh_extract_url_parts(&host, &user, &path, url) < 0)
goto on_error;
if (gitno_connect(&s->socket, host, port, 0) < 0)
if (gitno_connect(&s->socket, host, "22", 0) < 0)
goto on_error;
LIBSSH2_SESSION* session = libssh2_session_init();
if (!session)
goto on_error;
int rc = 0;
do {
rc = libssh2_session_startup(session, s->socket.socket);
} while (LIBSSH2_ERROR_EAGAIN == rc || LIBSSH2_ERROR_TIMEOUT == rc);
if (0 != rc) {
goto on_error;
}
libssh2_trace(session, 0x1FF);
libssh2_session_set_blocking(session, 1);
do {
rc = libssh2_userauth_publickey_fromfile_ex(
session,
user,
strlen(user),
NULL,
"/Users/bradfordmorgan/.ssh/id_rsa",
NULL
);
} while (LIBSSH2_ERROR_EAGAIN == rc || LIBSSH2_ERROR_TIMEOUT == rc);
if (0 != rc) {
goto on_error;
}
LIBSSH2_CHANNEL* channel = NULL;
do {
channel = libssh2_channel_open_session(session);
} while (LIBSSH2_ERROR_EAGAIN == rc || LIBSSH2_ERROR_TIMEOUT == rc);
if (!channel) {
goto on_error;
}
libssh2_channel_set_blocking(channel, 1);
t->current_stream = s;
git__free(host);
git__free(port);
git__free(user);
git__free(pass);
return 0;
on_error:
@ -270,7 +336,7 @@ on_error:
ssh_stream_free(*stream);
git__free(host);
git__free(port);
git__free(path);
return -1;
}
@ -336,7 +402,7 @@ static void _git_free(git_smart_subtransport *subtransport)
git__free(t);
}
int git_smart_subtransport_git(git_smart_subtransport **out, git_transport *owner)
int git_smart_subtransport_ssh(git_smart_subtransport **out, git_transport *owner)
{
ssh_subtransport *t;