/** * Derives the remote tracking branch from the remote and refspec. * * FIXME: The current implementation assumes the default mapping of * refs/heads/<branch_name> to refs/remotes/<remote_name>/<branch_name>. */ static const char *get_tracking_branch(const char *remote, const char *refspec) { struct refspec *spec; const char *spec_src; const char *merge_branch; spec = parse_fetch_refspec(1, &refspec); spec_src = spec->src; if (!*spec_src || !strcmp(spec_src, "HEAD")) spec_src = "HEAD"; else if (skip_prefix(spec_src, "heads/", &spec_src)) ; else if (skip_prefix(spec_src, "refs/heads/", &spec_src)) ; else if (starts_with(spec_src, "refs/") || starts_with(spec_src, "tags/") || starts_with(spec_src, "remotes/")) spec_src = ""; if (*spec_src) { if (!strcmp(remote, ".")) merge_branch = mkpath("refs/heads/%s", spec_src); else merge_branch = mkpath("refs/remotes/%s/%s", remote, spec_src); } else merge_branch = NULL; free_refspec(1, spec); return merge_branch; }
static int fetch_one(struct remote *remote, int argc, const char **argv) { int i; static const char **refs = NULL; int ref_nr = 0; int exit_code; if (!remote) die("Where do you want to fetch from today?"); transport = transport_get(remote, NULL); transport_set_verbosity(transport, verbosity, progress); if (upload_pack) set_option(TRANS_OPT_UPLOADPACK, upload_pack); if (keep) set_option(TRANS_OPT_KEEP, "yes"); if (depth) set_option(TRANS_OPT_DEPTH, depth); if (argc > 0) { int j = 0; refs = xcalloc(argc + 1, sizeof(const char *)); for (i = 0; i < argc; i++) { if (!strcmp(argv[i], "tag")) { char *ref; i++; if (i >= argc) die("You need to specify a tag name."); ref = xmalloc(strlen(argv[i]) * 2 + 22); strcpy(ref, "refs/tags/"); strcat(ref, argv[i]); strcat(ref, ":refs/tags/"); strcat(ref, argv[i]); refs[j++] = ref; } else refs[j++] = argv[i]; } refs[j] = NULL; ref_nr = j; } sigchain_push_common(unlock_pack_on_signal); atexit(unlock_pack); exit_code = do_fetch(transport, parse_fetch_refspec(ref_nr, refs), ref_nr); transport_disconnect(transport); transport = NULL; return exit_code; }
int for_each_remote(each_remote_fn fn, void *priv) { int i, result = 0; read_config(); for (i = 0; i < remotes_nr && !result; i++) { struct remote *r = remotes[i]; if (!r) continue; if (!r->fetch) r->fetch = parse_fetch_refspec(r->fetch_refspec_nr, r->fetch_refspec); if (!r->push) r->push = parse_push_refspec(r->push_refspec_nr, r->push_refspec); result = fn(r, priv); } return result; }
struct remote *remote_get(const char *name) { struct remote *ret; read_config(); if (!name) name = default_remote_name; ret = make_remote(name, 0); if (valid_remote_nick(name)) { if (!ret->url) read_remotes_file(ret); if (!ret->url) read_branches_file(ret); } if (!ret->url) add_url_alias(ret, name); if (!ret->url) return NULL; ret->fetch = parse_fetch_refspec(ret->fetch_refspec_nr, ret->fetch_refspec); ret->push = parse_push_refspec(ret->push_refspec_nr, ret->push_refspec); return ret; }
int cmd_clone(int argc, const char **argv, const char *prefix) { int is_bundle = 0, is_local; struct stat buf; const char *repo_name, *repo, *work_tree, *git_dir; char *path, *dir; int dest_exists; const struct ref *refs, *remote_head; const struct ref *remote_head_points_at; const struct ref *our_head_points_at; struct ref *mapped_refs; const struct ref *ref; struct strbuf key = STRBUF_INIT, value = STRBUF_INIT; struct strbuf branch_top = STRBUF_INIT, reflog_msg = STRBUF_INIT; struct transport *transport = NULL; const char *src_ref_prefix = "refs/heads/"; struct remote *remote; int err = 0, complete_refs_before_fetch = 1; struct refspec *refspec; const char *fetch_pattern; packet_trace_identity("clone"); argc = parse_options(argc, argv, prefix, builtin_clone_options, builtin_clone_usage, 0); if (argc > 2) usage_msg_opt(_("Too many arguments."), builtin_clone_usage, builtin_clone_options); if (argc == 0) usage_msg_opt(_("You must specify a repository to clone."), builtin_clone_usage, builtin_clone_options); if (option_single_branch == -1) option_single_branch = option_depth ? 1 : 0; if (option_mirror) option_bare = 1; if (option_bare) { if (option_origin) die(_("--bare and --origin %s options are incompatible."), option_origin); if (real_git_dir) die(_("--bare and --separate-git-dir are incompatible.")); option_no_checkout = 1; } if (!option_origin) option_origin = "origin"; repo_name = argv[0]; path = get_repo_path(repo_name, &is_bundle); if (path) repo = xstrdup(absolute_path(repo_name)); else if (!strchr(repo_name, ':')) die(_("repository '%s' does not exist"), repo_name); else repo = repo_name; /* no need to be strict, transport_set_option() will validate it again */ if (option_depth && atoi(option_depth) < 1) die(_("depth %s is not a positive number"), option_depth); if (argc == 2) dir = xstrdup(argv[1]); else dir = guess_dir_name(repo_name, is_bundle, option_bare); strip_trailing_slashes(dir); dest_exists = !stat(dir, &buf); if (dest_exists && !is_empty_dir(dir)) die(_("destination path '%s' already exists and is not " "an empty directory."), dir); strbuf_addf(&reflog_msg, "clone: from %s", repo); if (option_bare) work_tree = NULL; else { work_tree = getenv("GIT_WORK_TREE"); if (work_tree && !stat(work_tree, &buf)) die(_("working tree '%s' already exists."), work_tree); } if (option_bare || work_tree) git_dir = xstrdup(dir); else { work_tree = dir; git_dir = mkpathdup("%s/.git", dir); } if (!option_bare) { junk_work_tree = work_tree; if (safe_create_leading_directories_const(work_tree) < 0) die_errno(_("could not create leading directories of '%s'"), work_tree); if (!dest_exists && mkdir(work_tree, 0777)) die_errno(_("could not create work tree dir '%s'."), work_tree); set_git_work_tree(work_tree); } junk_git_dir = git_dir; atexit(remove_junk); sigchain_push_common(remove_junk_on_signal); if (safe_create_leading_directories_const(git_dir) < 0) die(_("could not create leading directories of '%s'"), git_dir); set_git_dir_init(git_dir, real_git_dir, 0); if (real_git_dir) { git_dir = real_git_dir; junk_git_dir = real_git_dir; } if (0 <= option_verbosity) { if (option_bare) fprintf(stderr, _("Cloning into bare repository '%s'...\n"), dir); else fprintf(stderr, _("Cloning into '%s'...\n"), dir); } init_db(option_template, INIT_DB_QUIET); write_config(&option_config); git_config(git_default_config, NULL); if (option_bare) { if (option_mirror) src_ref_prefix = "refs/"; strbuf_addstr(&branch_top, src_ref_prefix); git_config_set("core.bare", "true"); } else { strbuf_addf(&branch_top, "refs/remotes/%s/", option_origin); } strbuf_addf(&value, "+%s*:%s*", src_ref_prefix, branch_top.buf); strbuf_addf(&key, "remote.%s.url", option_origin); git_config_set(key.buf, repo); strbuf_reset(&key); if (option_reference.nr) setup_reference(); else if (option_dissociate) { warning(_("--dissociate given, but there is no --reference")); option_dissociate = 0; } fetch_pattern = value.buf; refspec = parse_fetch_refspec(1, &fetch_pattern); strbuf_reset(&value); remote = remote_get(option_origin); transport = transport_get(remote, remote->url[0]); path = get_repo_path(remote->url[0], &is_bundle); is_local = option_local != 0 && path && !is_bundle; if (is_local) { if (option_depth) warning(_("--depth is ignored in local clones; use file:// instead.")); if (!access(mkpath("%s/shallow", path), F_OK)) { if (option_local > 0) warning(_("source repository is shallow, ignoring --local")); is_local = 0; } } if (option_local > 0 && !is_local) warning(_("--local is ignored")); transport->cloning = 1; if (!transport->get_refs_list || (!is_local && !transport->fetch)) die(_("Don't know how to clone %s"), transport->url); transport_set_option(transport, TRANS_OPT_KEEP, "yes"); if (option_depth) transport_set_option(transport, TRANS_OPT_DEPTH, option_depth); if (option_single_branch) transport_set_option(transport, TRANS_OPT_FOLLOWTAGS, "1"); transport_set_verbosity(transport, option_verbosity, option_progress); if (option_upload_pack) transport_set_option(transport, TRANS_OPT_UPLOADPACK, option_upload_pack); if (transport->smart_options && !option_depth) transport->smart_options->check_self_contained_and_connected = 1; refs = transport_get_remote_refs(transport); if (refs) { mapped_refs = wanted_peer_refs(refs, refspec); /* * transport_get_remote_refs() may return refs with null sha-1 * in mapped_refs (see struct transport->get_refs_list * comment). In that case we need fetch it early because * remote_head code below relies on it. * * for normal clones, transport_get_remote_refs() should * return reliable ref set, we can delay cloning until after * remote HEAD check. */ for (ref = refs; ref; ref = ref->next) if (is_null_sha1(ref->old_sha1)) { complete_refs_before_fetch = 0; break; } if (!is_local && !complete_refs_before_fetch) transport_fetch_refs(transport, mapped_refs); remote_head = find_ref_by_name(refs, "HEAD"); remote_head_points_at = guess_remote_head(remote_head, mapped_refs, 0); if (option_branch) { our_head_points_at = find_remote_branch(mapped_refs, option_branch); if (!our_head_points_at) die(_("Remote branch %s not found in upstream %s"), option_branch, option_origin); } else our_head_points_at = remote_head_points_at; } else { if (option_branch) die(_("Remote branch %s not found in upstream %s"), option_branch, option_origin); warning(_("You appear to have cloned an empty repository.")); mapped_refs = NULL; our_head_points_at = NULL; remote_head_points_at = NULL; remote_head = NULL; option_no_checkout = 1; if (!option_bare) install_branch_config(0, "master", option_origin, "refs/heads/master"); } write_refspec_config(src_ref_prefix, our_head_points_at, remote_head_points_at, &branch_top); if (is_local) clone_local(path, git_dir); else if (refs && complete_refs_before_fetch) transport_fetch_refs(transport, mapped_refs); update_remote_refs(refs, mapped_refs, remote_head_points_at, branch_top.buf, reflog_msg.buf, transport, !is_local); update_head(our_head_points_at, remote_head, reflog_msg.buf); transport_unlock_pack(transport); transport_disconnect(transport); if (option_dissociate) dissociate_from_references(); junk_mode = JUNK_LEAVE_REPO; err = checkout(); strbuf_release(&reflog_msg); strbuf_release(&branch_top); strbuf_release(&key); strbuf_release(&value); junk_mode = JUNK_LEAVE_ALL; free(refspec); return err; }
int cmd_clone(int argc, const char **argv, const char *prefix) { int is_bundle = 0; struct stat buf; const char *repo_name, *repo, *work_tree, *git_dir; char *path, *dir; int dest_exists; const struct ref *refs, *remote_head; const struct ref *remote_head_points_at; const struct ref *our_head_points_at; struct ref *mapped_refs; struct strbuf key = STRBUF_INIT, value = STRBUF_INIT; struct strbuf branch_top = STRBUF_INIT, reflog_msg = STRBUF_INIT; struct transport *transport = NULL; char *src_ref_prefix = "refs/heads/"; int err = 0; struct refspec *refspec; const char *fetch_pattern; junk_pid = getpid(); argc = parse_options(argc, argv, prefix, builtin_clone_options, builtin_clone_usage, 0); if (argc > 2) usage_msg_opt("Too many arguments.", builtin_clone_usage, builtin_clone_options); if (argc == 0) usage_msg_opt("You must specify a repository to clone.", builtin_clone_usage, builtin_clone_options); if (option_mirror) option_bare = 1; if (option_bare) { if (option_origin) die("--bare and --origin %s options are incompatible.", option_origin); option_no_checkout = 1; } if (!option_origin) option_origin = "origin"; repo_name = argv[0]; path = get_repo_path(repo_name, &is_bundle); if (path) repo = xstrdup(make_nonrelative_path(repo_name)); else if (!strchr(repo_name, ':')) repo = xstrdup(make_absolute_path(repo_name)); else repo = repo_name; if (argc == 2) dir = xstrdup(argv[1]); else dir = guess_dir_name(repo_name, is_bundle, option_bare); strip_trailing_slashes(dir); dest_exists = !stat(dir, &buf); if (dest_exists && !is_empty_dir(dir)) die("destination path '%s' already exists and is not " "an empty directory.", dir); strbuf_addf(&reflog_msg, "clone: from %s", repo); if (option_bare) work_tree = NULL; else { work_tree = getenv("GIT_WORK_TREE"); if (work_tree && !stat(work_tree, &buf)) die("working tree '%s' already exists.", work_tree); } if (option_bare || work_tree) git_dir = xstrdup(dir); else { work_tree = dir; git_dir = xstrdup(mkpath("%s/.git", dir)); } if (!option_bare) { junk_work_tree = work_tree; if (safe_create_leading_directories_const(work_tree) < 0) die_errno("could not create leading directories of '%s'", work_tree); if (!dest_exists && mkdir(work_tree, 0755)) die_errno("could not create work tree dir '%s'.", work_tree); set_git_work_tree(work_tree); } junk_git_dir = git_dir; atexit(remove_junk); sigchain_push_common(remove_junk_on_signal); setenv(CONFIG_ENVIRONMENT, mkpath("%s/config", git_dir), 1); if (safe_create_leading_directories_const(git_dir) < 0) die("could not create leading directories of '%s'", git_dir); set_git_dir(make_absolute_path(git_dir)); init_db(option_template, option_quiet ? INIT_DB_QUIET : 0); /* * At this point, the config exists, so we do not need the * environment variable. We actually need to unset it, too, to * re-enable parsing of the global configs. */ unsetenv(CONFIG_ENVIRONMENT); if (option_reference) setup_reference(git_dir); git_config(git_default_config, NULL); if (option_bare) { if (option_mirror) src_ref_prefix = "refs/"; strbuf_addstr(&branch_top, src_ref_prefix); git_config_set("core.bare", "true"); } else { strbuf_addf(&branch_top, "refs/remotes/%s/", option_origin); } strbuf_addf(&value, "+%s*:%s*", src_ref_prefix, branch_top.buf); if (option_mirror || !option_bare) { /* Configure the remote */ strbuf_addf(&key, "remote.%s.fetch", option_origin); git_config_set_multivar(key.buf, value.buf, "^$", 0); strbuf_reset(&key); if (option_mirror) { strbuf_addf(&key, "remote.%s.mirror", option_origin); git_config_set(key.buf, "true"); strbuf_reset(&key); } strbuf_addf(&key, "remote.%s.url", option_origin); git_config_set(key.buf, repo); strbuf_reset(&key); } fetch_pattern = value.buf; refspec = parse_fetch_refspec(1, &fetch_pattern); strbuf_reset(&value); if (path && !is_bundle) { refs = clone_local(path, git_dir); mapped_refs = wanted_peer_refs(refs, refspec); } else { struct remote *remote = remote_get(argv[0]); transport = transport_get(remote, remote->url[0]); if (!transport->get_refs_list || !transport->fetch) die("Don't know how to clone %s", transport->url); transport_set_option(transport, TRANS_OPT_KEEP, "yes"); if (option_depth) transport_set_option(transport, TRANS_OPT_DEPTH, option_depth); if (option_quiet) transport->verbose = -1; else if (option_verbose) transport->verbose = 1; if (option_progress) transport->progress = 1; if (option_upload_pack) transport_set_option(transport, TRANS_OPT_UPLOADPACK, option_upload_pack); refs = transport_get_remote_refs(transport); if (refs) { mapped_refs = wanted_peer_refs(refs, refspec); transport_fetch_refs(transport, mapped_refs); } } if (refs) { clear_extra_refs(); write_remote_refs(mapped_refs); remote_head = find_ref_by_name(refs, "HEAD"); remote_head_points_at = guess_remote_head(remote_head, mapped_refs, 0); if (option_branch) { struct strbuf head = STRBUF_INIT; strbuf_addstr(&head, src_ref_prefix); strbuf_addstr(&head, option_branch); our_head_points_at = find_ref_by_name(mapped_refs, head.buf); strbuf_release(&head); if (!our_head_points_at) { warning("Remote branch %s not found in " "upstream %s, using HEAD instead", option_branch, option_origin); our_head_points_at = remote_head_points_at; } } else our_head_points_at = remote_head_points_at; } else { warning("You appear to have cloned an empty repository."); our_head_points_at = NULL; remote_head_points_at = NULL; remote_head = NULL; option_no_checkout = 1; if (!option_bare) install_branch_config(0, "master", option_origin, "refs/heads/master"); } if (remote_head_points_at && !option_bare) { struct strbuf head_ref = STRBUF_INIT; strbuf_addstr(&head_ref, branch_top.buf); strbuf_addstr(&head_ref, "HEAD"); create_symref(head_ref.buf, remote_head_points_at->peer_ref->name, reflog_msg.buf); } if (our_head_points_at) { /* Local default branch link */ create_symref("HEAD", our_head_points_at->name, NULL); if (!option_bare) { const char *head = skip_prefix(our_head_points_at->name, "refs/heads/"); update_ref(reflog_msg.buf, "HEAD", our_head_points_at->old_sha1, NULL, 0, DIE_ON_ERR); install_branch_config(0, head, option_origin, our_head_points_at->name); } } else if (remote_head) { /* Source had detached HEAD pointing somewhere. */ if (!option_bare) { update_ref(reflog_msg.buf, "HEAD", remote_head->old_sha1, NULL, REF_NODEREF, DIE_ON_ERR); our_head_points_at = remote_head; } } else { /* Nothing to checkout out */ if (!option_no_checkout) warning("remote HEAD refers to nonexistent ref, " "unable to checkout.\n"); option_no_checkout = 1; } if (transport) { transport_unlock_pack(transport); transport_disconnect(transport); } if (!option_no_checkout) { struct lock_file *lock_file = xcalloc(1, sizeof(struct lock_file)); struct unpack_trees_options opts; struct tree *tree; struct tree_desc t; int fd; /* We need to be in the new work tree for the checkout */ setup_work_tree(); fd = hold_locked_index(lock_file, 1); memset(&opts, 0, sizeof opts); opts.update = 1; opts.merge = 1; opts.fn = oneway_merge; opts.verbose_update = !option_quiet; opts.src_index = &the_index; opts.dst_index = &the_index; tree = parse_tree_indirect(our_head_points_at->old_sha1); parse_tree(tree); init_tree_desc(&t, tree->buffer, tree->size); unpack_trees(1, &t, &opts); if (write_cache(fd, active_cache, active_nr) || commit_locked_index(lock_file)) die("unable to write new index file"); err |= run_hook(NULL, "post-checkout", sha1_to_hex(null_sha1), sha1_to_hex(our_head_points_at->old_sha1), "1", NULL); if (!err && option_recursive) err = run_command_v_opt(argv_submodule, RUN_GIT_CMD); } strbuf_release(&reflog_msg); strbuf_release(&branch_top); strbuf_release(&key); strbuf_release(&value); junk_pid = 0; return err; }
int cmd_fetch(int argc, const char **argv, const char *prefix) { struct remote *remote; int i; static const char **refs = NULL; int ref_nr = 0; int exit_code; /* Record the command line for the reflog */ strbuf_addstr(&default_rla, "fetch"); for (i = 1; i < argc; i++) strbuf_addf(&default_rla, " %s", argv[i]); argc = parse_options(argc, argv, prefix, builtin_fetch_options, builtin_fetch_usage, 0); if (argc == 0) remote = remote_get(NULL); else remote = remote_get(argv[0]); if (!remote) die("Where do you want to fetch from today?"); transport = transport_get(remote, remote->url[0]); if (verbosity >= 2) transport->verbose = 1; if (verbosity < 0) transport->verbose = -1; if (upload_pack) set_option(TRANS_OPT_UPLOADPACK, upload_pack); if (keep) set_option(TRANS_OPT_KEEP, "yes"); if (depth) set_option(TRANS_OPT_DEPTH, depth); if (argc > 1) { int j = 0; refs = xcalloc(argc + 1, sizeof(const char *)); for (i = 1; i < argc; i++) { if (!strcmp(argv[i], "tag")) { char *ref; i++; if (i >= argc) die("You need to specify a tag name."); ref = xmalloc(strlen(argv[i]) * 2 + 22); strcpy(ref, "refs/tags/"); strcat(ref, argv[i]); strcat(ref, ":refs/tags/"); strcat(ref, argv[i]); refs[j++] = ref; } else refs[j++] = argv[i]; } refs[j] = NULL; ref_nr = j; } sigchain_push_common(unlock_pack_on_signal); atexit(unlock_pack); exit_code = do_fetch(transport, parse_fetch_refspec(ref_nr, refs), ref_nr); transport_disconnect(transport); transport = NULL; return exit_code; }
static struct child_process *get_helper(struct transport *transport) { struct helper_data *data = transport->data; struct strbuf buf = STRBUF_INIT; struct child_process *helper; const char **refspecs = NULL; int refspec_nr = 0; int refspec_alloc = 0; int duped; int code; if (data->helper) return data->helper; helper = xcalloc(1, sizeof(*helper)); helper->in = -1; helper->out = -1; helper->err = 0; helper->argv = xcalloc(4, sizeof(*helper->argv)); strbuf_addf(&buf, "git-remote-%s", data->name); helper->argv[0] = strbuf_detach(&buf, NULL); helper->argv[1] = transport->remote->name; helper->argv[2] = remove_ext_force(transport->url); helper->git_cmd = 0; helper->silent_exec_failure = 1; code = start_command(helper); if (code < 0 && errno == ENOENT) die("Unable to find remote helper for '%s'", data->name); else if (code != 0) exit(code); data->helper = helper; data->no_disconnect_req = 0; /* * Open the output as FILE* so strbuf_getline() can be used. * Do this with duped fd because fclose() will close the fd, * and stuff like taking over will require the fd to remain. */ duped = dup(helper->out); if (duped < 0) die_errno("Can't dup helper output fd"); data->out = xfdopen(duped, "r"); write_constant(helper->in, "capabilities\n"); while (1) { const char *capname; int mandatory = 0; recvline(data, &buf); if (!*buf.buf) break; if (*buf.buf == '*') { capname = buf.buf + 1; mandatory = 1; } else capname = buf.buf; if (debug) fprintf(stderr, "Debug: Got cap %s\n", capname); if (!strcmp(capname, "fetch")) data->fetch = 1; else if (!strcmp(capname, "option")) data->option = 1; else if (!strcmp(capname, "push")) data->push = 1; else if (!strcmp(capname, "import")) data->import = 1; else if (!data->refspecs && !prefixcmp(capname, "refspec ")) { ALLOC_GROW(refspecs, refspec_nr + 1, refspec_alloc); refspecs[refspec_nr++] = strdup(buf.buf + strlen("refspec ")); } else if (!strcmp(capname, "connect")) { data->connect = 1; } else if (mandatory) { die("Unknown mandatory capability %s. This remote " "helper probably needs newer version of Git.\n", capname); } } if (refspecs) { int i; data->refspec_nr = refspec_nr; data->refspecs = parse_fetch_refspec(refspec_nr, refspecs); for (i = 0; i < refspec_nr; i++) { free((char *)refspecs[i]); } free(refspecs); } strbuf_release(&buf); if (debug) fprintf(stderr, "Debug: Capabilities complete.\n"); return data->helper; }