diff options
Diffstat (limited to 'upload-pack.c')
-rw-r--r-- | upload-pack.c | 656 |
1 files changed, 495 insertions, 161 deletions
diff --git a/upload-pack.c b/upload-pack.c index 4a82602be5..936acabbdd 100644 --- a/upload-pack.c +++ b/upload-pack.c @@ -3,10 +3,10 @@ #include "refs.h" #include "pkt-line.h" #include "sideband.h" +#include "object-store.h" #include "tag.h" #include "object.h" #include "commit.h" -#include "exec_cmd.h" #include "diff.h" #include "revision.h" #include "list-objects.h" @@ -17,16 +17,12 @@ #include "sigchain.h" #include "version.h" #include "string-list.h" -#include "parse-options.h" #include "argv-array.h" #include "prio-queue.h" #include "protocol.h" #include "quote.h" - -static const char * const upload_pack_usage[] = { - N_("git upload-pack [<options>] <dir>"), - NULL -}; +#include "upload-pack.h" +#include "serve.h" /* Remember to update object flag allocation in object.h */ #define THEY_HAVE (1u << 11) @@ -64,7 +60,6 @@ static int keepalive = 5; * otherwise maximum packet size (up to 65520 bytes). */ static int use_sideband; -static int advertise_refs; static int stateless_rpc; static const char *pack_objects_hook; @@ -450,7 +445,7 @@ static int get_common_commits(void) break; default: got_common = 1; - memcpy(last_hex, oid_to_hex(&oid), 41); + oid_to_hex_r(last_hex, &oid); if (multi_ack == 2) packet_write_fmt(1, "ACK %s common\n", last_hex); else if (multi_ack) @@ -492,7 +487,7 @@ static int do_reachable_revlist(struct child_process *cmd, "rev-list", "--stdin", NULL, }; struct object *o; - char namebuf[42]; /* ^ + SHA-1 + LF */ + char namebuf[GIT_MAX_HEXSZ + 2]; /* ^ + hash + LF */ int i; cmd->argv = argv; @@ -561,15 +556,17 @@ static int get_reachable_list(struct object_array *src, struct child_process cmd = CHILD_PROCESS_INIT; int i; struct object *o; - char namebuf[42]; /* ^ + SHA-1 + LF */ + char namebuf[GIT_MAX_HEXSZ + 2]; /* ^ + hash + LF */ + const unsigned hexsz = the_hash_algo->hexsz; if (do_reachable_revlist(&cmd, src, reachable) < 0) return -1; - while ((i = read_in_full(cmd.out, namebuf, 41)) == 41) { + while ((i = read_in_full(cmd.out, namebuf, hexsz + 1)) == hexsz + 1) { struct object_id sha1; + const char *p; - if (namebuf[40] != '\n' || get_oid_hex(namebuf, &sha1)) + if (parse_oid_hex(namebuf, &sha1, &p) || *p != '\n') break; o = lookup_object(sha1.hash); @@ -662,7 +659,7 @@ static void send_shallow(struct commit_list *result) if (!(object->flags & (CLIENT_SHALLOW|NOT_SHALLOW))) { packet_write_fmt(1, "shallow %s", oid_to_hex(&object->oid)); - register_shallow(&object->oid); + register_shallow(the_repository, &object->oid); shallow_nr++; } result = result->next; @@ -699,14 +696,14 @@ static void send_unshallow(const struct object_array *shallows) add_object_array(object, NULL, &extra_edge_obj); } /* make sure commit traversal conforms to client */ - register_shallow(&object->oid); + register_shallow(the_repository, &object->oid); } } static void deepen(int depth, int deepen_relative, struct object_array *shallows) { - if (depth == INFINITE_DEPTH && !is_repository_shallow()) { + if (depth == INFINITE_DEPTH && !is_repository_shallow(the_repository)) { int i; for (i = 0; i < shallows->nr; i++) { @@ -734,7 +731,6 @@ static void deepen(int depth, int deepen_relative, } send_unshallow(shallows); - packet_flush(1); } static void deepen_by_rev_list(int ac, const char **av, @@ -746,7 +742,123 @@ static void deepen_by_rev_list(int ac, const char **av, send_shallow(result); free_commit_list(result); send_unshallow(shallows); - packet_flush(1); +} + +/* Returns 1 if a shallow list is sent or 0 otherwise */ +static int send_shallow_list(int depth, int deepen_rev_list, + timestamp_t deepen_since, + struct string_list *deepen_not, + struct object_array *shallows) +{ + int ret = 0; + + if (depth > 0 && deepen_rev_list) + die("git upload-pack: deepen and deepen-since (or deepen-not) cannot be used together"); + if (depth > 0) { + deepen(depth, deepen_relative, shallows); + ret = 1; + } else if (deepen_rev_list) { + struct argv_array av = ARGV_ARRAY_INIT; + int i; + + argv_array_push(&av, "rev-list"); + if (deepen_since) + argv_array_pushf(&av, "--max-age=%"PRItime, deepen_since); + if (deepen_not->nr) { + argv_array_push(&av, "--not"); + for (i = 0; i < deepen_not->nr; i++) { + struct string_list_item *s = deepen_not->items + i; + argv_array_push(&av, s->string); + } + argv_array_push(&av, "--not"); + } + for (i = 0; i < want_obj.nr; i++) { + struct object *o = want_obj.objects[i].item; + argv_array_push(&av, oid_to_hex(&o->oid)); + } + deepen_by_rev_list(av.argc, av.argv, shallows); + argv_array_clear(&av); + ret = 1; + } else { + if (shallows->nr > 0) { + int i; + for (i = 0; i < shallows->nr; i++) + register_shallow(the_repository, + &shallows->objects[i].item->oid); + } + } + + shallow_nr += shallows->nr; + return ret; +} + +static int process_shallow(const char *line, struct object_array *shallows) +{ + const char *arg; + if (skip_prefix(line, "shallow ", &arg)) { + struct object_id oid; + struct object *object; + if (get_oid_hex(arg, &oid)) + die("invalid shallow line: %s", line); + object = parse_object(&oid); + if (!object) + return 1; + if (object->type != OBJ_COMMIT) + die("invalid shallow object %s", oid_to_hex(&oid)); + if (!(object->flags & CLIENT_SHALLOW)) { + object->flags |= CLIENT_SHALLOW; + add_object_array(object, NULL, shallows); + } + return 1; + } + + return 0; +} + +static int process_deepen(const char *line, int *depth) +{ + const char *arg; + if (skip_prefix(line, "deepen ", &arg)) { + char *end = NULL; + *depth = (int)strtol(arg, &end, 0); + if (!end || *end || *depth <= 0) + die("Invalid deepen: %s", line); + return 1; + } + + return 0; +} + +static int process_deepen_since(const char *line, timestamp_t *deepen_since, int *deepen_rev_list) +{ + const char *arg; + if (skip_prefix(line, "deepen-since ", &arg)) { + char *end = NULL; + *deepen_since = parse_timestamp(arg, &end, 0); + if (!end || *end || !deepen_since || + /* revisions.c's max_age -1 is special */ + *deepen_since == -1) + die("Invalid deepen-since: %s", line); + *deepen_rev_list = 1; + return 1; + } + return 0; +} + +static int process_deepen_not(const char *line, struct string_list *deepen_not, int *deepen_rev_list) +{ + const char *arg; + if (skip_prefix(line, "deepen-not ", &arg)) { + char *ref = NULL; + struct object_id oid; + if (expand_ref(arg, strlen(arg), &oid, &ref) != 1) + die("git upload-pack: ambiguous deepen-not: %s", line); + string_list_append(deepen_not, ref); + free(ref); + *deepen_rev_list = 1; + return 1; + } + return 0; } static void receive_needs(void) @@ -770,61 +882,26 @@ static void receive_needs(void) if (!line) break; - if (skip_prefix(line, "shallow ", &arg)) { - struct object_id oid; - struct object *object; - if (get_oid_hex(arg, &oid)) - die("invalid shallow line: %s", line); - object = parse_object(&oid); - if (!object) - continue; - if (object->type != OBJ_COMMIT) - die("invalid shallow object %s", oid_to_hex(&oid)); - if (!(object->flags & CLIENT_SHALLOW)) { - object->flags |= CLIENT_SHALLOW; - add_object_array(object, NULL, &shallows); - } + if (process_shallow(line, &shallows)) continue; - } - if (skip_prefix(line, "deepen ", &arg)) { - char *end = NULL; - depth = strtol(arg, &end, 0); - if (!end || *end || depth <= 0) - die("Invalid deepen: %s", line); + if (process_deepen(line, &depth)) continue; - } - if (skip_prefix(line, "deepen-since ", &arg)) { - char *end = NULL; - deepen_since = parse_timestamp(arg, &end, 0); - if (!end || *end || !deepen_since || - /* revisions.c's max_age -1 is special */ - deepen_since == -1) - die("Invalid deepen-since: %s", line); - deepen_rev_list = 1; + if (process_deepen_since(line, &deepen_since, &deepen_rev_list)) continue; - } - if (skip_prefix(line, "deepen-not ", &arg)) { - char *ref = NULL; - struct object_id oid; - if (expand_ref(arg, strlen(arg), &oid, &ref) != 1) - die("git upload-pack: ambiguous deepen-not: %s", line); - string_list_append(&deepen_not, ref); - free(ref); - deepen_rev_list = 1; + if (process_deepen_not(line, &deepen_not, &deepen_rev_list)) continue; - } + if (skip_prefix(line, "filter ", &arg)) { if (!filter_capability_requested) die("git upload-pack: filtering capability not negotiated"); parse_list_objects_filter(&filter_options, arg); continue; } + if (!skip_prefix(line, "want ", &arg) || - get_oid_hex(arg, &oid_buf)) + parse_oid_hex(arg, &oid_buf, &features)) die("git upload-pack: protocol error, " - "expected to get sha, not '%s'", line); - - features = arg + 40; + "expected to get object ID, not '%s'", line); if (parse_feature_request(features, "deepen-relative")) deepen_relative = 1; @@ -881,40 +958,10 @@ static void receive_needs(void) if (depth == 0 && !deepen_rev_list && shallows.nr == 0) return; - if (depth > 0 && deepen_rev_list) - die("git upload-pack: deepen and deepen-since (or deepen-not) cannot be used together"); - if (depth > 0) - deepen(depth, deepen_relative, &shallows); - else if (deepen_rev_list) { - struct argv_array av = ARGV_ARRAY_INIT; - int i; - argv_array_push(&av, "rev-list"); - if (deepen_since) - argv_array_pushf(&av, "--max-age=%"PRItime, deepen_since); - if (deepen_not.nr) { - argv_array_push(&av, "--not"); - for (i = 0; i < deepen_not.nr; i++) { - struct string_list_item *s = deepen_not.items + i; - argv_array_push(&av, s->string); - } - argv_array_push(&av, "--not"); - } - for (i = 0; i < want_obj.nr; i++) { - struct object *o = want_obj.objects[i].item; - argv_array_push(&av, oid_to_hex(&o->oid)); - } - deepen_by_rev_list(av.argc, av.argv, &shallows); - argv_array_clear(&av); - } - else - if (shallows.nr > 0) { - int i; - for (i = 0; i < shallows.nr; i++) - register_shallow(&shallows.objects[i].item->oid); - } - - shallow_nr += shallows.nr; + if (send_shallow_list(depth, deepen_rev_list, deepen_since, + &deepen_not, &shallows)) + packet_flush(1); object_array_clear(&shallows); } @@ -1004,33 +1051,6 @@ static int find_symref(const char *refname, const struct object_id *oid, return 0; } -static void upload_pack(void) -{ - struct string_list symref = STRING_LIST_INIT_DUP; - - head_ref_namespaced(find_symref, &symref); - - if (advertise_refs || !stateless_rpc) { - reset_timeout(); - head_ref_namespaced(send_ref, &symref); - for_each_namespaced_ref(send_ref, &symref); - advertise_shallow_grafts(1); - packet_flush(1); - } else { - head_ref_namespaced(check_ref, NULL); - for_each_namespaced_ref(check_ref, NULL); - } - string_list_clear(&symref, 1); - if (advertise_refs) - return; - - receive_needs(); - if (want_obj.nr) { - get_common_commits(); - create_pack_file(); - } -} - static int upload_pack_config(const char *var, const char *value, void *unused) { if (!strcmp("uploadpack.allowtipsha1inwant", var)) { @@ -1061,58 +1081,372 @@ static int upload_pack_config(const char *var, const char *value, void *unused) return parse_hide_refs_config(var, value, "uploadpack"); } -int cmd_main(int argc, const char **argv) +void upload_pack(struct upload_pack_options *options) { - const char *dir; - int strict = 0; - struct option options[] = { - OPT_BOOL(0, "stateless-rpc", &stateless_rpc, - N_("quit after a single request/response exchange")), - OPT_BOOL(0, "advertise-refs", &advertise_refs, - N_("exit immediately after initial ref advertisement")), - OPT_BOOL(0, "strict", &strict, - N_("do not try <directory>/.git/ if <directory> is no Git directory")), - OPT_INTEGER(0, "timeout", &timeout, - N_("interrupt transfer after <n> seconds of inactivity")), - OPT_END() - }; + struct string_list symref = STRING_LIST_INIT_DUP; - packet_trace_identity("upload-pack"); - check_replace_refs = 0; + stateless_rpc = options->stateless_rpc; + timeout = options->timeout; + daemon_mode = options->daemon_mode; - argc = parse_options(argc, argv, NULL, options, upload_pack_usage, 0); + git_config(upload_pack_config, NULL); - if (argc != 1) - usage_with_options(upload_pack_usage, options); + head_ref_namespaced(find_symref, &symref); - if (timeout) - daemon_mode = 1; + if (options->advertise_refs || !stateless_rpc) { + reset_timeout(); + head_ref_namespaced(send_ref, &symref); + for_each_namespaced_ref(send_ref, &symref); + advertise_shallow_grafts(1); + packet_flush(1); + } else { + head_ref_namespaced(check_ref, NULL); + for_each_namespaced_ref(check_ref, NULL); + } + string_list_clear(&symref, 1); + if (options->advertise_refs) + return; + + receive_needs(); + if (want_obj.nr) { + get_common_commits(); + create_pack_file(); + } +} + +struct upload_pack_data { + struct object_array wants; + struct oid_array haves; - setup_path(); + struct object_array shallows; + struct string_list deepen_not; + int depth; + timestamp_t deepen_since; + int deepen_rev_list; + int deepen_relative; - dir = argv[0]; + unsigned stateless_rpc : 1; - if (!enter_repo(dir, strict)) - die("'%s' does not appear to be a git repository", dir); + unsigned use_thin_pack : 1; + unsigned use_ofs_delta : 1; + unsigned no_progress : 1; + unsigned use_include_tag : 1; + unsigned done : 1; +}; + +static void upload_pack_data_init(struct upload_pack_data *data) +{ + struct object_array wants = OBJECT_ARRAY_INIT; + struct oid_array haves = OID_ARRAY_INIT; + struct object_array shallows = OBJECT_ARRAY_INIT; + struct string_list deepen_not = STRING_LIST_INIT_DUP; + + memset(data, 0, sizeof(*data)); + data->wants = wants; + data->haves = haves; + data->shallows = shallows; + data->deepen_not = deepen_not; +} + +static void upload_pack_data_clear(struct upload_pack_data *data) +{ + object_array_clear(&data->wants); + oid_array_clear(&data->haves); + object_array_clear(&data->shallows); + string_list_clear(&data->deepen_not, 0); +} + +static int parse_want(const char *line) +{ + const char *arg; + if (skip_prefix(line, "want ", &arg)) { + struct object_id oid; + struct object *o; + + if (get_oid_hex(arg, &oid)) + die("git upload-pack: protocol error, " + "expected to get oid, not '%s'", line); + + o = parse_object(&oid); + if (!o) { + packet_write_fmt(1, + "ERR upload-pack: not our ref %s", + oid_to_hex(&oid)); + die("git upload-pack: not our ref %s", + oid_to_hex(&oid)); + } + + if (!(o->flags & WANTED)) { + o->flags |= WANTED; + add_object_array(o, NULL, &want_obj); + } + + return 1; + } + + return 0; +} + +static int parse_have(const char *line, struct oid_array *haves) +{ + const char *arg; + if (skip_prefix(line, "have ", &arg)) { + struct object_id oid; + + if (get_oid_hex(arg, &oid)) + die("git upload-pack: expected SHA1 object, got '%s'", arg); + oid_array_append(haves, &oid); + return 1; + } + + return 0; +} + +static void process_args(struct packet_reader *request, + struct upload_pack_data *data) +{ + while (packet_reader_read(request) != PACKET_READ_FLUSH) { + const char *arg = request->line; + const char *p; + + /* process want */ + if (parse_want(arg)) + continue; + /* process have line */ + if (parse_have(arg, &data->haves)) + continue; + + /* process args like thin-pack */ + if (!strcmp(arg, "thin-pack")) { + use_thin_pack = 1; + continue; + } + if (!strcmp(arg, "ofs-delta")) { + use_ofs_delta = 1; + continue; + } + if (!strcmp(arg, "no-progress")) { + no_progress = 1; + continue; + } + if (!strcmp(arg, "include-tag")) { + use_include_tag = 1; + continue; + } + if (!strcmp(arg, "done")) { + data->done = 1; + continue; + } + + /* Shallow related arguments */ + if (process_shallow(arg, &data->shallows)) + continue; + if (process_deepen(arg, &data->depth)) + continue; + if (process_deepen_since(arg, &data->deepen_since, + &data->deepen_rev_list)) + continue; + if (process_deepen_not(arg, &data->deepen_not, + &data->deepen_rev_list)) + continue; + if (!strcmp(arg, "deepen-relative")) { + data->deepen_relative = 1; + continue; + } + + if (allow_filter && skip_prefix(arg, "filter ", &p)) { + parse_list_objects_filter(&filter_options, p); + continue; + } + + /* ignore unknown lines maybe? */ + die("unexpected line: '%s'", arg); + } +} + +static int process_haves(struct oid_array *haves, struct oid_array *common) +{ + int i; + + /* Process haves */ + for (i = 0; i < haves->nr; i++) { + const struct object_id *oid = &haves->oid[i]; + struct object *o; + int we_knew_they_have = 0; + + if (!has_object_file(oid)) + continue; + + oid_array_append(common, oid); + + o = parse_object(oid); + if (!o) + die("oops (%s)", oid_to_hex(oid)); + if (o->type == OBJ_COMMIT) { + struct commit_list *parents; + struct commit *commit = (struct commit *)o; + if (o->flags & THEY_HAVE) + we_knew_they_have = 1; + else + o->flags |= THEY_HAVE; + if (!oldest_have || (commit->date < oldest_have)) + oldest_have = commit->date; + for (parents = commit->parents; + parents; + parents = parents->next) + parents->item->object.flags |= THEY_HAVE; + } + if (!we_knew_they_have) + add_object_array(o, NULL, &have_obj); + } + + return 0; +} + +static int send_acks(struct oid_array *acks, struct strbuf *response) +{ + int i; + + packet_buf_write(response, "acknowledgments\n"); + + /* Send Acks */ + if (!acks->nr) + packet_buf_write(response, "NAK\n"); + + for (i = 0; i < acks->nr; i++) { + packet_buf_write(response, "ACK %s\n", + oid_to_hex(&acks->oid[i])); + } + + if (ok_to_give_up()) { + /* Send Ready */ + packet_buf_write(response, "ready\n"); + return 1; + } + + return 0; +} + +static int process_haves_and_send_acks(struct upload_pack_data *data) +{ + struct oid_array common = OID_ARRAY_INIT; + struct strbuf response = STRBUF_INIT; + int ret = 0; + + process_haves(&data->haves, &common); + if (data->done) { + ret = 1; + } else if (send_acks(&common, &response)) { + packet_buf_delim(&response); + ret = 1; + } else { + /* Add Flush */ + packet_buf_flush(&response); + ret = 0; + } + + /* Send response */ + write_or_die(1, response.buf, response.len); + strbuf_release(&response); + + oid_array_clear(&data->haves); + oid_array_clear(&common); + return ret; +} + +static void send_shallow_info(struct upload_pack_data *data) +{ + /* No shallow info needs to be sent */ + if (!data->depth && !data->deepen_rev_list && !data->shallows.nr && + !is_repository_shallow(the_repository)) + return; + + packet_write_fmt(1, "shallow-info\n"); + + if (!send_shallow_list(data->depth, data->deepen_rev_list, + data->deepen_since, &data->deepen_not, + &data->shallows) && + is_repository_shallow(the_repository)) + deepen(INFINITE_DEPTH, data->deepen_relative, &data->shallows); + + packet_delim(1); +} + +enum fetch_state { + FETCH_PROCESS_ARGS = 0, + FETCH_SEND_ACKS, + FETCH_SEND_PACK, + FETCH_DONE, +}; + +int upload_pack_v2(struct repository *r, struct argv_array *keys, + struct packet_reader *request) +{ + enum fetch_state state = FETCH_PROCESS_ARGS; + struct upload_pack_data data; git_config(upload_pack_config, NULL); - switch (determine_protocol_version_server()) { - case protocol_v1: - /* - * v1 is just the original protocol with a version string, - * so just fall through after writing the version string. - */ - if (advertise_refs || !stateless_rpc) - packet_write_fmt(1, "version 1\n"); - - /* fallthrough */ - case protocol_v0: - upload_pack(); - break; - case protocol_unknown_version: - BUG("unknown protocol version"); + upload_pack_data_init(&data); + use_sideband = LARGE_PACKET_MAX; + + while (state != FETCH_DONE) { + switch (state) { + case FETCH_PROCESS_ARGS: + process_args(request, &data); + + if (!want_obj.nr) { + /* + * Request didn't contain any 'want' lines, + * guess they didn't want anything. + */ + state = FETCH_DONE; + } else if (data.haves.nr) { + /* + * Request had 'have' lines, so lets ACK them. + */ + state = FETCH_SEND_ACKS; + } else { + /* + * Request had 'want's but no 'have's so we can + * immedietly go to construct and send a pack. + */ + state = FETCH_SEND_PACK; + } + break; + case FETCH_SEND_ACKS: + if (process_haves_and_send_acks(&data)) + state = FETCH_SEND_PACK; + else + state = FETCH_DONE; + break; + case FETCH_SEND_PACK: + send_shallow_info(&data); + + packet_write_fmt(1, "packfile\n"); + create_pack_file(); + state = FETCH_DONE; + break; + case FETCH_DONE: + continue; + } } + upload_pack_data_clear(&data); return 0; } + +int upload_pack_advertise(struct repository *r, + struct strbuf *value) +{ + if (value) { + int allow_filter_value; + strbuf_addstr(value, "shallow"); + if (!repo_config_get_bool(the_repository, + "uploadpack.allowfilter", + &allow_filter_value) && + allow_filter_value) + strbuf_addstr(value, " filter"); + } + return 1; +} |