| /* |
| * 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 "common.h" |
| #include "git2/types.h" |
| #include "git2/net.h" |
| #include "git2/repository.h" |
| #include "git2/object.h" |
| #include "git2/tag.h" |
| #include "git2/transport.h" |
| #include "git2/revwalk.h" |
| #include "git2/odb_backend.h" |
| #include "git2/pack.h" |
| #include "git2/commit.h" |
| #include "git2/revparse.h" |
| #include "pack-objects.h" |
| #include "refs.h" |
| #include "posix.h" |
| #include "path.h" |
| #include "buffer.h" |
| #include "repository.h" |
| #include "odb.h" |
| |
| typedef struct { |
| git_transport parent; |
| char *url; |
| int direction; |
| int flags; |
| git_atomic cancelled; |
| git_repository *repo; |
| git_vector refs; |
| unsigned connected : 1; |
| } transport_local; |
| |
| static int add_ref(transport_local *t, const char *name) |
| { |
| const char peeled[] = "^{}"; |
| git_remote_head *head; |
| git_object *obj = NULL, *target = NULL; |
| git_buf buf = GIT_BUF_INIT; |
| |
| head = (git_remote_head *)git__calloc(1, sizeof(git_remote_head)); |
| GITERR_CHECK_ALLOC(head); |
| |
| head->name = git__strdup(name); |
| GITERR_CHECK_ALLOC(head->name); |
| |
| if (git_reference_name_to_oid(&head->oid, t->repo, name) < 0) { |
| git__free(head->name); |
| git__free(head); |
| return -1; |
| } |
| |
| if (git_vector_insert(&t->refs, head) < 0) |
| { |
| git__free(head->name); |
| git__free(head); |
| return -1; |
| } |
| |
| /* If it's not a tag, we don't need to try to peel it */ |
| if (git__prefixcmp(name, GIT_REFS_TAGS_DIR)) |
| return 0; |
| |
| if (git_object_lookup(&obj, t->repo, &head->oid, GIT_OBJ_ANY) < 0) |
| return -1; |
| |
| head = NULL; |
| |
| /* If it's not an annotated tag, just get out */ |
| if (git_object_type(obj) != GIT_OBJ_TAG) { |
| git_object_free(obj); |
| return 0; |
| } |
| |
| /* And if it's a tag, peel it, and add it to the list */ |
| head = (git_remote_head *)git__calloc(1, sizeof(git_remote_head)); |
| GITERR_CHECK_ALLOC(head); |
| if (git_buf_join(&buf, 0, name, peeled) < 0) |
| return -1; |
| |
| head->name = git_buf_detach(&buf); |
| |
| if (git_tag_peel(&target, (git_tag *) obj) < 0) |
| goto on_error; |
| |
| git_oid_cpy(&head->oid, git_object_id(target)); |
| git_object_free(obj); |
| git_object_free(target); |
| |
| if (git_vector_insert(&t->refs, head) < 0) |
| return -1; |
| |
| return 0; |
| |
| on_error: |
| git_object_free(obj); |
| git_object_free(target); |
| return -1; |
| } |
| |
| static int store_refs(transport_local *t) |
| { |
| unsigned int i; |
| git_strarray ref_names = {0}; |
| |
| assert(t); |
| |
| if (git_reference_list(&ref_names, t->repo, GIT_REF_LISTALL) < 0 || |
| git_vector_init(&t->refs, (unsigned int)ref_names.count, NULL) < 0) |
| goto on_error; |
| |
| /* Sort the references first */ |
| git__tsort((void **)ref_names.strings, ref_names.count, &git__strcmp_cb); |
| |
| /* Add HEAD */ |
| if (add_ref(t, GIT_HEAD_FILE) < 0) |
| goto on_error; |
| |
| for (i = 0; i < ref_names.count; ++i) { |
| if (add_ref(t, ref_names.strings[i]) < 0) |
| goto on_error; |
| } |
| |
| git_strarray_free(&ref_names); |
| return 0; |
| |
| on_error: |
| git_vector_free(&t->refs); |
| git_strarray_free(&ref_names); |
| return -1; |
| } |
| |
| /* |
| * Try to open the url as a git directory. The direction doesn't |
| * matter in this case because we're calulating the heads ourselves. |
| */ |
| static int local_connect( |
| git_transport *transport, |
| const char *url, |
| git_cred_acquire_cb cred_acquire_cb, |
| int direction, int flags) |
| { |
| git_repository *repo; |
| int error; |
| transport_local *t = (transport_local *) transport; |
| const char *path; |
| git_buf buf = GIT_BUF_INIT; |
| |
| GIT_UNUSED(cred_acquire_cb); |
| |
| t->url = git__strdup(url); |
| GITERR_CHECK_ALLOC(t->url); |
| t->direction = direction; |
| t->flags = flags; |
| |
| /* The repo layer doesn't want the prefix */ |
| if (!git__prefixcmp(t->url, "file://")) { |
| if (git_path_fromurl(&buf, t->url) < 0) { |
| git_buf_free(&buf); |
| return -1; |
| } |
| path = git_buf_cstr(&buf); |
| |
| } else { /* We assume transport->url is already a path */ |
| path = t->url; |
| } |
| |
| error = git_repository_open(&repo, path); |
| |
| git_buf_free(&buf); |
| |
| if (error < 0) |
| return -1; |
| |
| t->repo = repo; |
| |
| if (store_refs(t) < 0) |
| return -1; |
| |
| t->connected = 1; |
| |
| return 0; |
| } |
| |
| static int local_ls(git_transport *transport, git_headlist_cb list_cb, void *payload) |
| { |
| transport_local *t = (transport_local *)transport; |
| unsigned int i; |
| git_remote_head *head = NULL; |
| |
| if (!t->connected) { |
| giterr_set(GITERR_NET, "The transport is not connected"); |
| return -1; |
| } |
| |
| git_vector_foreach(&t->refs, i, head) { |
| if (list_cb(head, payload)) |
| return GIT_EUSER; |
| } |
| |
| return 0; |
| } |
| |
| static int local_negotiate_fetch( |
| git_transport *transport, |
| git_repository *repo, |
| const git_remote_head * const *refs, |
| size_t count) |
| { |
| transport_local *t = (transport_local*)transport; |
| git_remote_head *rhead; |
| unsigned int i; |
| |
| GIT_UNUSED(refs); |
| GIT_UNUSED(count); |
| |
| /* Fill in the loids */ |
| git_vector_foreach(&t->refs, i, rhead) { |
| git_object *obj; |
| |
| int error = git_revparse_single(&obj, repo, rhead->name); |
| if (!error) |
| git_oid_cpy(&rhead->loid, git_object_id(obj)); |
| else if (error != GIT_ENOTFOUND) |
| return error; |
| git_object_free(obj); |
| giterr_clear(); |
| } |
| |
| return 0; |
| } |
| |
| typedef struct foreach_data { |
| git_transfer_progress *stats; |
| git_transfer_progress_callback progress_cb; |
| void *progress_payload; |
| git_odb_writepack *writepack; |
| } foreach_data; |
| |
| static int foreach_cb(void *buf, size_t len, void *payload) |
| { |
| foreach_data *data = (foreach_data*)payload; |
| |
| data->stats->received_bytes += len; |
| return data->writepack->add(data->writepack, buf, len, data->stats); |
| } |
| |
| static int local_download_pack( |
| git_transport *transport, |
| git_repository *repo, |
| git_transfer_progress *stats, |
| git_transfer_progress_callback progress_cb, |
| void *progress_payload) |
| { |
| transport_local *t = (transport_local*)transport; |
| git_revwalk *walk = NULL; |
| git_remote_head *rhead; |
| unsigned int i; |
| int error = -1; |
| git_oid oid; |
| git_packbuilder *pack = NULL; |
| git_odb_writepack *writepack = NULL; |
| git_odb *odb = NULL; |
| |
| if ((error = git_revwalk_new(&walk, t->repo)) < 0) |
| goto cleanup; |
| git_revwalk_sorting(walk, GIT_SORT_TIME); |
| |
| if ((error = git_packbuilder_new(&pack, t->repo)) < 0) |
| goto cleanup; |
| |
| stats->total_objects = 0; |
| stats->indexed_objects = 0; |
| stats->received_objects = 0; |
| stats->received_bytes = 0; |
| |
| git_vector_foreach(&t->refs, i, rhead) { |
| git_object *obj; |
| if ((error = git_object_lookup(&obj, t->repo, &rhead->oid, GIT_OBJ_ANY)) < 0) |
| goto cleanup; |
| |
| if (git_object_type(obj) == GIT_OBJ_COMMIT) { |
| /* Revwalker includes only wanted commits */ |
| error = git_revwalk_push(walk, &rhead->oid); |
| if (!git_oid_iszero(&rhead->loid)) |
| error = git_revwalk_hide(walk, &rhead->loid); |
| } else { |
| /* Tag or some other wanted object. Add it on its own */ |
| error = git_packbuilder_insert(pack, &rhead->oid, rhead->name); |
| } |
| git_object_free(obj); |
| } |
| |
| /* Walk the objects, building a packfile */ |
| if ((error = git_repository_odb__weakptr(&odb, repo)) < 0) |
| goto cleanup; |
| |
| while ((error = git_revwalk_next(&oid, walk)) == 0) { |
| git_commit *commit; |
| |
| /* Skip commits we already have */ |
| if (git_odb_exists(odb, &oid)) continue; |
| |
| if (!git_object_lookup((git_object**)&commit, t->repo, &oid, GIT_OBJ_COMMIT)) { |
| const git_oid *tree_oid = git_commit_tree_id(commit); |
| git_commit_free(commit); |
| |
| /* Add the commit and its tree */ |
| if ((error = git_packbuilder_insert(pack, &oid, NULL)) < 0 || |
| (error = git_packbuilder_insert_tree(pack, tree_oid)) < 0) |
| goto cleanup; |
| } |
| } |
| |
| if ((error = git_odb_write_pack(&writepack, odb, progress_cb, progress_payload)) < 0) |
| goto cleanup; |
| |
| /* Write the data to the ODB */ |
| { |
| foreach_data data = {0}; |
| data.stats = stats; |
| data.progress_cb = progress_cb; |
| data.progress_payload = progress_payload; |
| data.writepack = writepack; |
| |
| if ((error = git_packbuilder_foreach(pack, foreach_cb, &data)) < 0) |
| goto cleanup; |
| } |
| error = writepack->commit(writepack, stats); |
| |
| cleanup: |
| if (writepack) writepack->free(writepack); |
| git_packbuilder_free(pack); |
| git_revwalk_free(walk); |
| return error; |
| } |
| |
| static int local_is_connected(git_transport *transport, int *connected) |
| { |
| transport_local *t = (transport_local *)transport; |
| |
| *connected = t->connected; |
| |
| return 0; |
| } |
| |
| static int local_read_flags(git_transport *transport, int *flags) |
| { |
| transport_local *t = (transport_local *)transport; |
| |
| *flags = t->flags; |
| |
| return 0; |
| } |
| |
| static void local_cancel(git_transport *transport) |
| { |
| transport_local *t = (transport_local *)transport; |
| |
| git_atomic_set(&t->cancelled, 1); |
| } |
| |
| static int local_close(git_transport *transport) |
| { |
| transport_local *t = (transport_local *)transport; |
| |
| t->connected = 0; |
| git_repository_free(t->repo); |
| t->repo = NULL; |
| |
| return 0; |
| } |
| |
| static void local_free(git_transport *transport) |
| { |
| unsigned int i; |
| transport_local *t = (transport_local *) transport; |
| git_vector *vec = &t->refs; |
| git_remote_head *head; |
| |
| assert(transport); |
| |
| git_vector_foreach (vec, i, head) { |
| git__free(head->name); |
| git__free(head); |
| } |
| git_vector_free(vec); |
| |
| git__free(t->url); |
| git__free(t); |
| } |
| |
| /************** |
| * Public API * |
| **************/ |
| |
| int git_transport_local(git_transport **out, void *param) |
| { |
| transport_local *t; |
| |
| GIT_UNUSED(param); |
| |
| t = git__malloc(sizeof(transport_local)); |
| GITERR_CHECK_ALLOC(t); |
| |
| memset(t, 0x0, sizeof(transport_local)); |
| |
| t->parent.connect = local_connect; |
| t->parent.negotiate_fetch = local_negotiate_fetch; |
| t->parent.download_pack = local_download_pack; |
| t->parent.close = local_close; |
| t->parent.free = local_free; |
| t->parent.ls = local_ls; |
| t->parent.is_connected = local_is_connected; |
| t->parent.read_flags = local_read_flags; |
| t->parent.cancel = local_cancel; |
| |
| *out = (git_transport *) t; |
| |
| return 0; |
| } |