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/*

* Copyright (C) 2009-2011 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"

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)

return git__throw(GIT_EOBJCORRUPTED, "Failed to parse refspec. No ':'");

refspec->src = git__strndup(str, delim - str);

if (refspec->src == NULL)

return GIT_ENOMEM;

refspec->dst = git__strdup(delim + 1);

if (refspec->dst == NULL) {

free(refspec->src);

refspec->src = NULL;

return GIT_ENOMEM;

}

return GIT_SUCCESS;

}

static int parse_remote_refspec(git_config *cfg, git_refspec *refspec, const char *var)

{

const char *val;

int error;

error = git_config_get_string(cfg, var, &val);

if (error < GIT_SUCCESS)

return error;

return refspec_parse(refspec, val);

}

int git_remote_new(git_remote **out, git_repository *repo, const char *url)

{

git_remote *remote;

remote = git__malloc(sizeof(git_remote));

if (remote == NULL)

return GIT_ENOMEM;

memset(remote, 0x0, sizeof(git_remote));

remote->repo = repo;

remote->url = git__strdup(url);

if (remote->url == NULL) {

free(remote);

return GIT_ENOMEM;

}

*out = remote;

return GIT_SUCCESS;

}

int git_remote_get(git_remote **out, git_config *cfg, const char *name)

{

git_remote *remote;

char *buf = NULL;

const char *val;

int ret, error, buf_len;

remote = git__malloc(sizeof(git_remote));

if (remote == NULL)

return GIT_ENOMEM;

memset(remote, 0x0, sizeof(git_remote));

remote->name = git__strdup(name);

if (remote->name == NULL) {

error = GIT_ENOMEM;

goto cleanup;

}

/* "fetch" is the longest var name we're interested in */

buf_len = strlen("remote.") + strlen(".fetch") + strlen(name) + 1;

buf = git__malloc(buf_len);

if (buf == NULL) {

error = GIT_ENOMEM;

goto cleanup;

}

ret = p_snprintf(buf, buf_len, "%s.%s.%s", "remote", name, "url");

if (ret < 0) {

error = git__throw(GIT_EOSERR, "Failed to build config var name");

goto cleanup;

}

error = git_config_get_string(cfg, buf, &val);

if (error < GIT_SUCCESS) {

error = git__rethrow(error, "Remote's url doesn't exist");

goto cleanup;

}

remote->repo = cfg->repo;

remote->url = git__strdup(val);

if (remote->url == NULL) {

error = GIT_ENOMEM;

goto cleanup;

}

ret = p_snprintf(buf, buf_len, "%s.%s.%s", "remote", name, "fetch");

if (ret < 0) {

error = git__throw(GIT_EOSERR, "Failed to build config var name");

goto cleanup;

}

error = parse_remote_refspec(cfg, &remote->fetch, buf);

if (error < GIT_SUCCESS) {

error = git__rethrow(error, "Failed to get fetch refspec");

goto cleanup;

}

ret = p_snprintf(buf, buf_len, "%s.%s.%s", "remote", name, "push");

if (ret < 0) {

error = git__throw(GIT_EOSERR, "Failed to build config var name");

goto cleanup;

}

error = parse_remote_refspec(cfg, &remote->push, buf);

/* Not finding push is fine */

if (error == GIT_ENOTFOUND)

error = GIT_SUCCESS;

if (error < GIT_SUCCESS)

goto cleanup;

*out = remote;

cleanup:

free(buf);

if (error < GIT_SUCCESS)

git_remote_free(remote);

return error;

}

const char *git_remote_name(struct git_remote *remote)

{

return remote->name;

}

const char *git_remote_url(struct git_remote *remote)

{

return remote->url;

}

const git_refspec *git_remote_fetchspec(struct git_remote *remote)

{

return &remote->fetch;

}

const git_refspec *git_remote_pushspec(struct git_remote *remote)

{

return &remote->push;

}

int git_remote_connect(git_remote *remote, int direction)

{

int error;

git_transport *t;

error = git_transport_new(&t, remote->url);

if (error < GIT_SUCCESS)

return git__rethrow(error, "Failed to create transport");

error = t->connect(t, direction);

if (error < GIT_SUCCESS) {

error = git__rethrow(error, "Failed to connect the transport");

goto cleanup;

}

remote->transport = t;

cleanup:

if (error < GIT_SUCCESS)

t->free(t);

return error;

}

int git_remote_ls(git_remote *remote, git_headarray *refs)

{

return remote->transport->ls(remote->transport, refs);

}

int git_remote_negotiate(git_remote *remote)

{

return git_fetch_negotiate(remote);

}

int git_remote_download(char **filename, git_remote *remote)

{

return git_fetch_download_pack(filename, remote);

}

int git_remote_update_tips(struct git_remote *remote)

{

int error = GIT_SUCCESS;

unsigned int i = 0;

char refname[GIT_PATH_MAX];

git_headarray *refs = &remote->refs;

git_remote_head *head;

git_reference *ref;

struct git_refspec *spec = &remote->fetch;

memset(refname, 0x0, sizeof(refname));

if (refs->len == 0)

return GIT_SUCCESS;

/* HEAD is only allowed to be the first in the list */

head = refs->heads[0];

if (!strcmp(head->name, GIT_HEAD_FILE)) {

error = git_reference_create_oid(&ref, remote->repo, GIT_FETCH_HEAD_FILE, &head->oid, 1);

i = 1;

if (error < GIT_SUCCESS)

return git__rethrow(error, "Failed to update FETCH_HEAD");

}

for (; i < refs->len; ++i) {

head = refs->heads[i];

error = git_refspec_transform(refname, sizeof(refname), spec, head->name);

if (error < GIT_SUCCESS)

return error;

error = git_reference_create_oid(&ref, remote->repo, refname, &head->oid, 1);

if (error < GIT_SUCCESS)

return error;

}

return GIT_SUCCESS;

}

void git_remote_free(git_remote *remote)

{

if (remote == NULL)

return;

free(remote->fetch.src);

free(remote->fetch.dst);

free(remote->push.src);

free(remote->push.dst);

free(remote->url);

free(remote->name);

if (remote->transport != NULL) {

if (remote->transport->connected)

remote->transport->close(remote->transport);

remote->transport->free(remote->transport);

}

free(remote);

}