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527 lines (399 loc) · 10.5 KB
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/*
* Copyright (C) 2009-2012 the libgit2 contributors
*
* This file is part of libgit2, distributed under the GNU GPL v2 with
* a Linking Exception. For full terms see the included COPYING file.
*/
#include "git2/remote.h"
#include "git2/config.h"
#include "git2/types.h"
#include "config.h"
#include "repository.h"
#include "remote.h"
#include "fetch.h"
#include "refs.h"
#include <regex.h>
static int refspec_parse(git_refspec *refspec, const char *str)
{
char *delim;
memset(refspec, 0x0, sizeof(git_refspec));
if (*str == '+') {
refspec->force = 1;
str++;
}
delim = strchr(str, ':');
if (delim == NULL) {
giterr_set(GITERR_NET, "Invalid refspec, missing ':'");
return -1;
}
refspec->src = git__strndup(str, delim - str);
GITERR_CHECK_ALLOC(refspec->src);
refspec->dst = git__strdup(delim + 1);
GITERR_CHECK_ALLOC(refspec->dst);
return 0;
}
static int parse_remote_refspec(git_config *cfg, git_refspec *refspec, const char *var)
{
int error;
const char *val;
if ((error = git_config_get_string(&val, cfg, var)) < 0)
return error;
return refspec_parse(refspec, val);
}
int git_remote_new(git_remote **out, git_repository *repo, const char *name, const char *url, const char *fetch)
{
git_remote *remote;
/* name is optional */
assert(out && repo && url);
remote = git__malloc(sizeof(git_remote));
GITERR_CHECK_ALLOC(remote);
memset(remote, 0x0, sizeof(git_remote));
remote->repo = repo;
remote->check_cert = 1;
if (git_vector_init(&remote->refs, 32, NULL) < 0)
return -1;
remote->url = git__strdup(url);
GITERR_CHECK_ALLOC(remote->url);
if (name != NULL) {
remote->name = git__strdup(name);
GITERR_CHECK_ALLOC(remote->name);
}
if (fetch != NULL) {
if (refspec_parse(&remote->fetch, fetch) < 0)
goto on_error;
}
*out = remote;
return 0;
on_error:
git_remote_free(remote);
return -1;
}
int git_remote_load(git_remote **out, git_repository *repo, const char *name)
{
git_remote *remote;
git_buf buf = GIT_BUF_INIT;
const char *val;
int error = 0;
git_config *config;
assert(out && repo && name);
if (git_repository_config__weakptr(&config, repo) < 0)
return -1;
remote = git__malloc(sizeof(git_remote));
GITERR_CHECK_ALLOC(remote);
memset(remote, 0x0, sizeof(git_remote));
remote->check_cert = 1;
remote->name = git__strdup(name);
GITERR_CHECK_ALLOC(remote->name);
if (git_vector_init(&remote->refs, 32, NULL) < 0) {
error = -1;
goto cleanup;
}
if (git_buf_printf(&buf, "remote.%s.url", name) < 0) {
error = -1;
goto cleanup;
}
if ((error = git_config_get_string(&val, config, git_buf_cstr(&buf))) < 0)
goto cleanup;
remote->repo = repo;
remote->url = git__strdup(val);
GITERR_CHECK_ALLOC(remote->url);
git_buf_clear(&buf);
if (git_buf_printf(&buf, "remote.%s.fetch", name) < 0) {
error = -1;
goto cleanup;
}
error = parse_remote_refspec(config, &remote->fetch, git_buf_cstr(&buf));
if (error == GIT_ENOTFOUND)
error = 0;
if (error < 0) {
error = -1;
goto cleanup;
}
git_buf_clear(&buf);
if (git_buf_printf(&buf, "remote.%s.push", name) < 0) {
error = -1;
goto cleanup;
}
error = parse_remote_refspec(config, &remote->push, git_buf_cstr(&buf));
if (error == GIT_ENOTFOUND)
error = 0;
if (error < 0) {
error = -1;
goto cleanup;
}
*out = remote;
cleanup:
git_buf_free(&buf);
if (error < 0)
git_remote_free(remote);
return error;
}
int git_remote_save(const git_remote *remote)
{
git_config *config;
git_buf buf = GIT_BUF_INIT, value = GIT_BUF_INIT;
if (git_repository_config__weakptr(&config, remote->repo) < 0)
return -1;
if (git_buf_printf(&buf, "remote.%s.%s", remote->name, "url") < 0)
return -1;
if (git_config_set_string(config, git_buf_cstr(&buf), remote->url) < 0) {
git_buf_free(&buf);
return -1;
}
if (remote->fetch.src != NULL && remote->fetch.dst != NULL) {
git_buf_clear(&buf);
git_buf_clear(&value);
git_buf_printf(&buf, "remote.%s.fetch", remote->name);
if (remote->fetch.force)
git_buf_putc(&value, '+');
git_buf_printf(&value, "%s:%s", remote->fetch.src, remote->fetch.dst);
if (git_buf_oom(&buf) || git_buf_oom(&value))
return -1;
if (git_config_set_string(config, git_buf_cstr(&buf), git_buf_cstr(&value)) < 0)
goto on_error;
}
if (remote->push.src != NULL && remote->push.dst != NULL) {
git_buf_clear(&buf);
git_buf_clear(&value);
git_buf_printf(&buf, "remote.%s.push", remote->name);
if (remote->push.force)
git_buf_putc(&value, '+');
git_buf_printf(&value, "%s:%s", remote->push.src, remote->push.dst);
if (git_buf_oom(&buf) || git_buf_oom(&value))
return -1;
if (git_config_set_string(config, git_buf_cstr(&buf), git_buf_cstr(&value)) < 0)
goto on_error;
}
git_buf_free(&buf);
git_buf_free(&value);
return 0;
on_error:
git_buf_free(&buf);
git_buf_free(&value);
return -1;
}
const char *git_remote_name(git_remote *remote)
{
assert(remote);
return remote->name;
}
const char *git_remote_url(git_remote *remote)
{
assert(remote);
return remote->url;
}
int git_remote_set_fetchspec(git_remote *remote, const char *spec)
{
git_refspec refspec;
assert(remote && spec);
if (refspec_parse(&refspec, spec) < 0)
return -1;
git__free(remote->fetch.src);
git__free(remote->fetch.dst);
remote->fetch.src = refspec.src;
remote->fetch.dst = refspec.dst;
return 0;
}
const git_refspec *git_remote_fetchspec(git_remote *remote)
{
assert(remote);
return &remote->fetch;
}
int git_remote_set_pushspec(git_remote *remote, const char *spec)
{
git_refspec refspec;
assert(remote && spec);
if (refspec_parse(&refspec, spec) < 0)
return -1;
git__free(remote->push.src);
git__free(remote->push.dst);
remote->push.src = refspec.src;
remote->push.dst = refspec.dst;
return 0;
}
const git_refspec *git_remote_pushspec(git_remote *remote)
{
assert(remote);
return &remote->push;
}
int git_remote_connect(git_remote *remote, int direction)
{
git_transport *t;
assert(remote);
if (git_transport_new(&t, remote->url) < 0)
return -1;
t->check_cert = remote->check_cert;
if (t->connect(t, direction) < 0) {
goto on_error;
}
remote->transport = t;
return 0;
on_error:
t->free(t);
return -1;
}
int git_remote_ls(git_remote *remote, git_headlist_cb list_cb, void *payload)
{
assert(remote);
if (!remote->transport || !remote->transport->connected) {
giterr_set(GITERR_NET, "The remote is not connected");
return -1;
}
return remote->transport->ls(remote->transport, list_cb, payload);
}
int git_remote_download(git_remote *remote, git_off_t *bytes, git_indexer_stats *stats)
{
int error;
assert(remote && bytes && stats);
if ((error = git_fetch_negotiate(remote)) < 0)
return error;
return git_fetch_download_pack(remote, bytes, stats);
}
int git_remote_update_tips(git_remote *remote, int (*cb)(const char *refname, const git_oid *a, const git_oid *b))
{
int error = 0;
unsigned int i = 0;
git_buf refname = GIT_BUF_INIT;
git_oid old;
git_vector *refs;
git_remote_head *head;
git_reference *ref;
struct git_refspec *spec;
assert(remote);
refs = &remote->refs;
spec = &remote->fetch;
if (refs->length == 0)
return 0;
/* HEAD is only allowed to be the first in the list */
head = refs->contents[0];
if (!strcmp(head->name, GIT_HEAD_FILE)) {
if (git_reference_create_oid(&ref, remote->repo, GIT_FETCH_HEAD_FILE, &head->oid, 1) < 0)
return -1;
i = 1;
git_reference_free(ref);
}
for (; i < refs->length; ++i) {
head = refs->contents[i];
if (git_refspec_transform_r(&refname, spec, head->name) < 0)
goto on_error;
error = git_reference_name_to_oid(&old, remote->repo, refname.ptr);
if (error < 0 && error != GIT_ENOTFOUND)
goto on_error;
if (error == GIT_ENOTFOUND)
memset(&old, 0, GIT_OID_RAWSZ);
if (!git_oid_cmp(&old, &head->oid))
continue;
if (git_reference_create_oid(&ref, remote->repo, refname.ptr, &head->oid, 1) < 0)
break;
git_reference_free(ref);
if (cb != NULL) {
if (cb(refname.ptr, &old, &head->oid) < 0)
goto on_error;
}
}
git_buf_free(&refname);
return 0;
on_error:
git_buf_free(&refname);
return -1;
}
int git_remote_connected(git_remote *remote)
{
assert(remote);
return remote->transport == NULL ? 0 : remote->transport->connected;
}
void git_remote_disconnect(git_remote *remote)
{
assert(remote);
if (remote->transport != NULL && remote->transport->connected)
remote->transport->close(remote->transport);
}
void git_remote_free(git_remote *remote)
{
if (remote == NULL)
return;
if (remote->transport != NULL) {
git_remote_disconnect(remote);
remote->transport->free(remote->transport);
remote->transport = NULL;
}
git_vector_free(&remote->refs);
git__free(remote->fetch.src);
git__free(remote->fetch.dst);
git__free(remote->push.src);
git__free(remote->push.dst);
git__free(remote->url);
git__free(remote->name);
git__free(remote);
}
struct cb_data {
git_vector *list;
regex_t *preg;
};
static int remote_list_cb(const char *name, const char *value, void *data_)
{
struct cb_data *data = (struct cb_data *)data_;
size_t nmatch = 2;
regmatch_t pmatch[2];
GIT_UNUSED(value);
if (!regexec(data->preg, name, nmatch, pmatch, 0)) {
char *remote_name = git__strndup(&name[pmatch[1].rm_so], pmatch[1].rm_eo - pmatch[1].rm_so);
GITERR_CHECK_ALLOC(remote_name);
if (git_vector_insert(data->list, remote_name) < 0)
return -1;
}
return 0;
}
int git_remote_list(git_strarray *remotes_list, git_repository *repo)
{
git_config *cfg;
git_vector list;
regex_t preg;
struct cb_data data;
int error;
if (git_repository_config__weakptr(&cfg, repo) < 0)
return -1;
if (git_vector_init(&list, 4, NULL) < 0)
return -1;
if (regcomp(&preg, "^remote\\.(.*)\\.url$", REG_EXTENDED) < 0) {
giterr_set(GITERR_OS, "Remote catch regex failed to compile");
return -1;
}
data.list = &list;
data.preg = &preg;
error = git_config_foreach(cfg, remote_list_cb, &data);
regfree(&preg);
if (error < 0) {
size_t i;
char *elem;
git_vector_foreach(&list, i, elem) {
git__free(elem);
}
git_vector_free(&list);
return error;
}
remotes_list->strings = (char **)list.contents;
remotes_list->count = list.length;
return 0;
}
int git_remote_add(git_remote **out, git_repository *repo, const char *name, const char *url)
{
git_buf buf = GIT_BUF_INIT;
if (git_buf_printf(&buf, "+refs/heads/*:refs/remotes/%s/*", name) < 0)
return -1;
if (git_remote_new(out, repo, name, url, git_buf_cstr(&buf)) < 0)
goto on_error;
git_buf_free(&buf);
if (git_remote_save(*out) < 0)
goto on_error;
return 0;
on_error:
git_buf_free(&buf);
git_remote_free(*out);
return -1;
}
void git_remote_check_cert(git_remote *remote, int check)
{
assert(remote);
remote->check_cert = check;
}
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