thodg/libgit2/src/remote.c

• Show log

  Commit

• Hash : 67dad09b
  Author :
  Date : 2012-10-25T09:59:49
  

  Remove inline hint

Download

• src/remote.c

• /*
   * 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/config.h"
  #include "git2/types.h"
  #include "git2/oid.h"
  
  #include "config.h"
  #include "repository.h"
  #include "remote.h"
  #include "fetch.h"
  #include "refs.h"
  #include "pkt.h"
  
  #include <regex.h>
  
  static int parse_remote_refspec(git_config *cfg, git_refspec *refspec, const char *var, bool is_fetch)
  {
  	int error;
  	const char *val;
  
  	if ((error = git_config_get_string(&val, cfg, var)) < 0)
  		return error;
  
  	return git_refspec__parse(refspec, val, is_fetch);
  }
  
  static int download_tags_value(git_remote *remote, git_config *cfg)
  {
  	const char *val;
  	git_buf buf = GIT_BUF_INIT;
  	int error;
  
  	if (remote->download_tags != GIT_REMOTE_DOWNLOAD_TAGS_UNSET)
  		return 0;
  
  	/* This is the default, let's see if we need to change it */
  	remote->download_tags = GIT_REMOTE_DOWNLOAD_TAGS_AUTO;
  	if (git_buf_printf(&buf, "remote.%s.tagopt", remote->name) < 0)
  		return -1;
  
  	error = git_config_get_string(&val, cfg, git_buf_cstr(&buf));
  	git_buf_free(&buf);
  	if (!error && !strcmp(val, "--no-tags"))
  		remote->download_tags = GIT_REMOTE_DOWNLOAD_TAGS_NONE;
  	else if (!error && !strcmp(val, "--tags"))
  		remote->download_tags = GIT_REMOTE_DOWNLOAD_TAGS_ALL;
  
  	if (error == GIT_ENOTFOUND)
  		error = 0;
  
  	return error;
  }
  
  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 (git_refspec__parse(&remote->fetch, fetch, true) < 0)
  			goto on_error;
  	}
  
  	/* A remote without a name doesn't download tags */
  	if (!name) {
  		remote->download_tags = GIT_REMOTE_DOWNLOAD_TAGS_NONE;
  	}
  
  	*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.pushurl", name) < 0) {
  		error = -1;
  		goto cleanup;
  	}
  
  	error = git_config_get_string(&val, config, git_buf_cstr(&buf));
  	if (error == GIT_ENOTFOUND)
  		error = 0;
  
  	if (error < 0) {
  		error = -1;
  		goto cleanup;
  	}
  
  	if (val) {
  		remote->pushurl = git__strdup(val);
  		GITERR_CHECK_ALLOC(remote->pushurl);
  	}
  
  	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), true);
  	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), false);
  	if (error == GIT_ENOTFOUND)
  		error = 0;
  
  	if (error < 0) {
  		error = -1;
  		goto cleanup;
  	}
  
  	if (download_tags_value(remote, config) < 0)
  		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)
  {
  	int error;
  	git_config *config;
  	const char *tagopt = NULL;
  	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.url", remote->name) < 0)
  		return -1;
  
  	if (git_config_set_string(config, git_buf_cstr(&buf), remote->url) < 0) {
  		git_buf_free(&buf);
  		return -1;
  	}
  
  	git_buf_clear(&buf);
  	if (git_buf_printf(&buf, "remote.%s.pushurl", remote->name) < 0)
  		return -1;
  
  	if (remote->pushurl) {
  		if (git_config_set_string(config, git_buf_cstr(&buf), remote->pushurl) < 0) {
  			git_buf_free(&buf);
  			return -1;
  		}
  	} else {
  		int error = git_config_delete(config, git_buf_cstr(&buf));
  		if (error == GIT_ENOTFOUND) {
  			error = 0;
  		}
  		if (error < 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;
  	}
  
  	/*
  	 * What action to take depends on the old and new values. This
  	 * is describes by the table below. tagopt means whether the
  	 * is already a value set in the config
  	 *
  	 *            AUTO     ALL or NONE
  	 *         +-----------------------+
  	 *  tagopt | remove  |     set     |
  	 *         +---------+-------------|
  	 * !tagopt | nothing |     set     |
  	 *         +---------+-------------+
  	 */
  
  	git_buf_clear(&buf);
  	if (git_buf_printf(&buf, "remote.%s.tagopt", remote->name) < 0)
  		goto on_error;
  
  	error = git_config_get_string(&tagopt, config, git_buf_cstr(&buf));
  	if (error < 0 && error != GIT_ENOTFOUND)
  		goto on_error;
  
  	if (remote->download_tags == GIT_REMOTE_DOWNLOAD_TAGS_ALL) {
  		if (git_config_set_string(config, git_buf_cstr(&buf), "--tags") < 0)
  			goto on_error;
  	} else if (remote->download_tags == GIT_REMOTE_DOWNLOAD_TAGS_NONE) {
  		if (git_config_set_string(config, git_buf_cstr(&buf), "--no-tags") < 0)
  			goto on_error;
  	} else if (tagopt) {
  		if (git_config_delete(config, git_buf_cstr(&buf)) < 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_url(git_remote *remote, const char* url)
  {
  	assert(remote);
  	assert(url);
  
  	git__free(remote->url);
  	remote->url = git__strdup(url);
  	GITERR_CHECK_ALLOC(remote->url);
  
  	return 0;
  }
  
  const char *git_remote_pushurl(git_remote *remote)
  {
  	assert(remote);
  	return remote->pushurl;
  }
  
  int git_remote_set_pushurl(git_remote *remote, const char* url)
  {
  	assert(remote);
  
  	git__free(remote->pushurl);
  	if (url) {
  		remote->pushurl = git__strdup(url);
  		GITERR_CHECK_ALLOC(remote->pushurl);
  	} else {
  		remote->pushurl = NULL;
  	}
  	return 0;
  }
  
  int git_remote_set_fetchspec(git_remote *remote, const char *spec)
  {
  	git_refspec refspec;
  
  	assert(remote && spec);
  
  	if (git_refspec__parse(&refspec, spec, true) < 0)
  		return -1;
  
  	git_refspec__free(&remote->fetch);
  	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 (git_refspec__parse(&refspec, spec, false) < 0)
  		return -1;
  
  	git_refspec__free(&remote->push);
  	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;
  }
  
  const char* git_remote__urlfordirection(git_remote *remote, int direction)
  {
  	assert(remote);
  
  	if (direction == GIT_DIR_FETCH) {
  		return remote->url;
  	}
  
  	if (direction == GIT_DIR_PUSH) {
  		return remote->pushurl ? remote->pushurl : remote->url;
  	}
  
  	return NULL;
  }
  
  int git_remote_connect(git_remote *remote, int direction)
  {
  	git_transport *t;
  	const char *url;
  
  	assert(remote);
  
  	url = git_remote__urlfordirection(remote, direction);
  	if (url == NULL )
  		return -1;
  
  	if (git_transport_new(&t, url) < 0)
  		return -1;
  
  	t->progress_cb = remote->callbacks.progress;
  	t->cb_data = remote->callbacks.data;
  
  	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)
  {
  	git_vector *refs = &remote->transport->refs;
  	unsigned int i;
  	git_pkt *p = NULL;
  
  	assert(remote);
  
  	if (!remote->transport || !remote->transport->connected) {
  		giterr_set(GITERR_NET, "The remote is not connected");
  		return -1;
  	}
  
  	git_vector_foreach(refs, i, p) {
  		git_pkt_ref *pkt = NULL;
  
  		if (p->type != GIT_PKT_REF)
  			continue;
  
  		pkt = (git_pkt_ref *)p;
  
  		if (list_cb(&pkt->head, payload))
  			return GIT_EUSER;
  	}
  
  	return 0;
  }
  
  int git_remote_download(
  		git_remote *remote,
  		git_transfer_progress_callback progress_cb,
  		void *progress_payload)
  {
  	int error;
  
  	assert(remote);
  
  	if ((error = git_fetch_negotiate(remote)) < 0)
  		return error;
  
  	return git_fetch_download_pack(remote, progress_cb, progress_payload);
  }
  
  int git_remote_update_tips(git_remote *remote)
  {
  	int error = 0, autotag;
  	unsigned int i = 0;
  	git_buf refname = GIT_BUF_INIT;
  	git_oid old;
  	git_pkt *pkt;
  	git_odb *odb;
  	git_vector *refs;
  	git_remote_head *head;
  	git_reference *ref;
  	struct git_refspec *spec;
  	git_refspec tagspec;
  
  	assert(remote);
  
  	refs = &remote->transport->refs;
  	spec = &remote->fetch;
  
  	if (refs->length == 0)
  		return 0;
  
  	if (git_repository_odb__weakptr(&odb, remote->repo) < 0)
  		return -1;
  
  	if (git_refspec__parse(&tagspec, GIT_REFSPEC_TAGS, true) < 0)
  		return -1;
  
  	/* HEAD is only allowed to be the first in the list */
  	pkt = refs->contents[0];
  	head = &((git_pkt_ref *)pkt)->head;
  	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) {
  		git_pkt *pkt = refs->contents[i];
  		autotag = 0;
  
  		if (pkt->type == GIT_PKT_REF)
  			head = &((git_pkt_ref *)pkt)->head;
  		else
  			continue;
  
  		/* Ignore malformed ref names (which also saves us from tag^{} */
  		if (!git_reference_is_valid_name(head->name))
  			continue;
  
  		if (git_refspec_src_matches(spec, head->name)) {
  			if (git_refspec_transform_r(&refname, spec, head->name) < 0)
  				goto on_error;
  		} else if (remote->download_tags != GIT_REMOTE_DOWNLOAD_TAGS_NONE) {
  
  			if (remote->download_tags != GIT_REMOTE_DOWNLOAD_TAGS_ALL)
  				autotag = 1;
  
  			if (!git_refspec_src_matches(&tagspec, head->name))
  				continue;
  
  			git_buf_clear(&refname);
  			if (git_buf_puts(&refname, head->name) < 0)
  				goto on_error;
  		} else {
  			continue;
  		}
  
  		if (autotag && !git_odb_exists(odb, &head->oid))
  			continue;
  
  		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;
  
  		/* In autotag mode, don't overwrite any locally-existing tags */
  		error = git_reference_create_oid(&ref, remote->repo, refname.ptr, &head->oid, !autotag);
  		if (error < 0 && error != GIT_EEXISTS)
  			goto on_error;
  
  		git_reference_free(ref);
  
  		if (remote->callbacks.update_tips != NULL) {
  			if (remote->callbacks.update_tips(refname.ptr, &old, &head->oid, remote->callbacks.data) < 0)
  				goto on_error;
  		}
  	}
  
  	git_refspec__free(&tagspec);
  	git_buf_free(&refname);
  	return 0;
  
  on_error:
  	git_refspec__free(&tagspec);
  	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_stop(git_remote *remote)
  {
  	git_atomic_set(&remote->transport->cancel, 1);
  }
  
  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_refspec__free(&remote->fetch);
  	git_refspec__free(&remote->push);
  	git__free(remote->url);
  	git__free(remote->pushurl);
  	git__free(remote->name);
  	git__free(remote);
  }
  
  struct cb_data {
  	git_vector *list;
  	regex_t *preg;
  };
  
  static int remote_list_cb(const git_config_entry *entry, void *data_)
  {
  	struct cb_data *data = (struct cb_data *)data_;
  	size_t nmatch = 2;
  	regmatch_t pmatch[2];
  	const char *name = entry->name;
  
  	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);
  
  		/* cb error is converted to GIT_EUSER by git_config_foreach */
  		if (error == GIT_EUSER)
  			error = -1;
  
  		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;
  }
  
  void git_remote_set_callbacks(git_remote *remote, git_remote_callbacks *callbacks)
  {
  	assert(remote && callbacks);
  
  	memcpy(&remote->callbacks, callbacks, sizeof(git_remote_callbacks));
  
  	if (remote->transport) {
  		remote->transport->progress_cb = remote->callbacks.progress;
  		remote->transport->cb_data = remote->callbacks.data;
  	}
  }
  
  const git_transfer_progress* git_remote_stats(git_remote *remote)
  {
  	assert(remote);
  	return &remote->stats;
  }
  
  int git_remote_autotag(git_remote *remote)
  {
  	return remote->download_tags;
  }
  
  void git_remote_set_autotag(git_remote *remote, int value)
  {
  	remote->download_tags = value;
  }
  

Download