| #include "builtin.h" |
| #include "commit.h" |
| #include "refs.h" |
| #include "pkt-line.h" |
| #include "sideband.h" |
| #include "run-command.h" |
| #include "remote.h" |
| #include "send-pack.h" |
| #include "quote.h" |
| #include "transport.h" |
| #include "version.h" |
| |
| static int feed_object(const unsigned char *sha1, int fd, int negative) |
| { |
| char buf[42]; |
| |
| if (negative && !has_sha1_file(sha1)) |
| return 1; |
| |
| memcpy(buf + negative, sha1_to_hex(sha1), 40); |
| if (negative) |
| buf[0] = '^'; |
| buf[40 + negative] = '\n'; |
| return write_or_whine(fd, buf, 41 + negative, "send-pack: send refs"); |
| } |
| |
| /* |
| * Make a pack stream and spit it out into file descriptor fd |
| */ |
| static int pack_objects(int fd, struct ref *refs, struct extra_have_objects *extra, struct send_pack_args *args) |
| { |
| /* |
| * The child becomes pack-objects --revs; we feed |
| * the revision parameters to it via its stdin and |
| * let its stdout go back to the other end. |
| */ |
| const char *argv[] = { |
| "pack-objects", |
| "--all-progress-implied", |
| "--revs", |
| "--stdout", |
| NULL, |
| NULL, |
| NULL, |
| NULL, |
| NULL, |
| }; |
| struct child_process po; |
| int i; |
| |
| i = 4; |
| if (args->use_thin_pack) |
| argv[i++] = "--thin"; |
| if (args->use_ofs_delta) |
| argv[i++] = "--delta-base-offset"; |
| if (args->quiet || !args->progress) |
| argv[i++] = "-q"; |
| if (args->progress) |
| argv[i++] = "--progress"; |
| memset(&po, 0, sizeof(po)); |
| po.argv = argv; |
| po.in = -1; |
| po.out = args->stateless_rpc ? -1 : fd; |
| po.git_cmd = 1; |
| if (start_command(&po)) |
| die_errno("git pack-objects failed"); |
| |
| /* |
| * We feed the pack-objects we just spawned with revision |
| * parameters by writing to the pipe. |
| */ |
| for (i = 0; i < extra->nr; i++) |
| if (!feed_object(extra->array[i], po.in, 1)) |
| break; |
| |
| while (refs) { |
| if (!is_null_sha1(refs->old_sha1) && |
| !feed_object(refs->old_sha1, po.in, 1)) |
| break; |
| if (!is_null_sha1(refs->new_sha1) && |
| !feed_object(refs->new_sha1, po.in, 0)) |
| break; |
| refs = refs->next; |
| } |
| |
| close(po.in); |
| |
| if (args->stateless_rpc) { |
| char *buf = xmalloc(LARGE_PACKET_MAX); |
| while (1) { |
| ssize_t n = xread(po.out, buf, LARGE_PACKET_MAX); |
| if (n <= 0) |
| break; |
| send_sideband(fd, -1, buf, n, LARGE_PACKET_MAX); |
| } |
| free(buf); |
| close(po.out); |
| po.out = -1; |
| } |
| |
| if (finish_command(&po)) |
| return -1; |
| return 0; |
| } |
| |
| static int receive_status(int in, struct ref *refs) |
| { |
| struct ref *hint; |
| char line[1000]; |
| int ret = 0; |
| int len = packet_read_line(in, line, sizeof(line)); |
| if (len < 10 || memcmp(line, "unpack ", 7)) |
| return error("did not receive remote status"); |
| if (memcmp(line, "unpack ok\n", 10)) { |
| char *p = line + strlen(line) - 1; |
| if (*p == '\n') |
| *p = '\0'; |
| error("unpack failed: %s", line + 7); |
| ret = -1; |
| } |
| hint = NULL; |
| while (1) { |
| char *refname; |
| char *msg; |
| len = packet_read_line(in, line, sizeof(line)); |
| if (!len) |
| break; |
| if (len < 3 || |
| (memcmp(line, "ok ", 3) && memcmp(line, "ng ", 3))) { |
| fprintf(stderr, "protocol error: %s\n", line); |
| ret = -1; |
| break; |
| } |
| |
| line[strlen(line)-1] = '\0'; |
| refname = line + 3; |
| msg = strchr(refname, ' '); |
| if (msg) |
| *msg++ = '\0'; |
| |
| /* first try searching at our hint, falling back to all refs */ |
| if (hint) |
| hint = find_ref_by_name(hint, refname); |
| if (!hint) |
| hint = find_ref_by_name(refs, refname); |
| if (!hint) { |
| warning("remote reported status on unknown ref: %s", |
| refname); |
| continue; |
| } |
| if (hint->status != REF_STATUS_EXPECTING_REPORT) { |
| warning("remote reported status on unexpected ref: %s", |
| refname); |
| continue; |
| } |
| |
| if (line[0] == 'o' && line[1] == 'k') |
| hint->status = REF_STATUS_OK; |
| else { |
| hint->status = REF_STATUS_REMOTE_REJECT; |
| ret = -1; |
| } |
| if (msg) |
| hint->remote_status = xstrdup(msg); |
| /* start our next search from the next ref */ |
| hint = hint->next; |
| } |
| return ret; |
| } |
| |
| static int sideband_demux(int in, int out, void *data) |
| { |
| int *fd = data, ret; |
| #ifdef NO_PTHREADS |
| close(fd[1]); |
| #endif |
| ret = recv_sideband("send-pack", fd[0], out); |
| close(out); |
| return ret; |
| } |
| |
| int send_pack(struct send_pack_args *args, |
| int fd[], struct child_process *conn, |
| struct ref *remote_refs, |
| struct extra_have_objects *extra_have) |
| { |
| int in = fd[0]; |
| int out = fd[1]; |
| struct strbuf req_buf = STRBUF_INIT; |
| struct ref *ref; |
| int new_refs; |
| int allow_deleting_refs = 0; |
| int status_report = 0; |
| int use_sideband = 0; |
| int quiet_supported = 0; |
| int agent_supported = 0; |
| unsigned cmds_sent = 0; |
| int ret; |
| struct async demux; |
| |
| /* Does the other end support the reporting? */ |
| if (server_supports("report-status")) |
| status_report = 1; |
| if (server_supports("delete-refs")) |
| allow_deleting_refs = 1; |
| if (server_supports("ofs-delta")) |
| args->use_ofs_delta = 1; |
| if (server_supports("side-band-64k")) |
| use_sideband = 1; |
| if (server_supports("quiet")) |
| quiet_supported = 1; |
| if (server_supports("agent")) |
| agent_supported = 1; |
| |
| if (!remote_refs) { |
| fprintf(stderr, "No refs in common and none specified; doing nothing.\n" |
| "Perhaps you should specify a branch such as 'master'.\n"); |
| return 0; |
| } |
| |
| /* |
| * Finally, tell the other end! |
| */ |
| new_refs = 0; |
| for (ref = remote_refs; ref; ref = ref->next) { |
| if (!ref->peer_ref && !args->send_mirror) |
| continue; |
| |
| /* Check for statuses set by set_ref_status_for_push() */ |
| switch (ref->status) { |
| case REF_STATUS_REJECT_NONFASTFORWARD: |
| case REF_STATUS_REJECT_ALREADY_EXISTS: |
| case REF_STATUS_REJECT_FETCH_FIRST: |
| case REF_STATUS_REJECT_NEEDS_FORCE: |
| case REF_STATUS_UPTODATE: |
| continue; |
| default: |
| ; /* do nothing */ |
| } |
| |
| if (ref->deletion && !allow_deleting_refs) { |
| ref->status = REF_STATUS_REJECT_NODELETE; |
| continue; |
| } |
| |
| if (!ref->deletion) |
| new_refs++; |
| |
| if (args->dry_run) { |
| ref->status = REF_STATUS_OK; |
| } else { |
| char *old_hex = sha1_to_hex(ref->old_sha1); |
| char *new_hex = sha1_to_hex(ref->new_sha1); |
| int quiet = quiet_supported && (args->quiet || !args->progress); |
| |
| if (!cmds_sent && (status_report || use_sideband || |
| quiet || agent_supported)) { |
| packet_buf_write(&req_buf, |
| "%s %s %s%c%s%s%s%s%s", |
| old_hex, new_hex, ref->name, 0, |
| status_report ? " report-status" : "", |
| use_sideband ? " side-band-64k" : "", |
| quiet ? " quiet" : "", |
| agent_supported ? " agent=" : "", |
| agent_supported ? git_user_agent_sanitized() : "" |
| ); |
| } |
| else |
| packet_buf_write(&req_buf, "%s %s %s", |
| old_hex, new_hex, ref->name); |
| ref->status = status_report ? |
| REF_STATUS_EXPECTING_REPORT : |
| REF_STATUS_OK; |
| cmds_sent++; |
| } |
| } |
| |
| if (args->stateless_rpc) { |
| if (!args->dry_run && cmds_sent) { |
| packet_buf_flush(&req_buf); |
| send_sideband(out, -1, req_buf.buf, req_buf.len, LARGE_PACKET_MAX); |
| } |
| } else { |
| safe_write(out, req_buf.buf, req_buf.len); |
| packet_flush(out); |
| } |
| strbuf_release(&req_buf); |
| |
| if (use_sideband && cmds_sent) { |
| memset(&demux, 0, sizeof(demux)); |
| demux.proc = sideband_demux; |
| demux.data = fd; |
| demux.out = -1; |
| if (start_async(&demux)) |
| die("send-pack: unable to fork off sideband demultiplexer"); |
| in = demux.out; |
| } |
| |
| if (new_refs && cmds_sent) { |
| if (pack_objects(out, remote_refs, extra_have, args) < 0) { |
| for (ref = remote_refs; ref; ref = ref->next) |
| ref->status = REF_STATUS_NONE; |
| if (args->stateless_rpc) |
| close(out); |
| if (git_connection_is_socket(conn)) |
| shutdown(fd[0], SHUT_WR); |
| if (use_sideband) |
| finish_async(&demux); |
| return -1; |
| } |
| } |
| if (args->stateless_rpc && cmds_sent) |
| packet_flush(out); |
| |
| if (status_report && cmds_sent) |
| ret = receive_status(in, remote_refs); |
| else |
| ret = 0; |
| if (args->stateless_rpc) |
| packet_flush(out); |
| |
| if (use_sideband && cmds_sent) { |
| if (finish_async(&demux)) { |
| error("error in sideband demultiplexer"); |
| ret = -1; |
| } |
| close(demux.out); |
| } |
| |
| if (ret < 0) |
| return ret; |
| |
| if (args->porcelain) |
| return 0; |
| |
| for (ref = remote_refs; ref; ref = ref->next) { |
| switch (ref->status) { |
| case REF_STATUS_NONE: |
| case REF_STATUS_UPTODATE: |
| case REF_STATUS_OK: |
| break; |
| default: |
| return -1; |
| } |
| } |
| return 0; |
| } |