#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 const char send_pack_usage[] = "git send-pack [--all | --mirror] [--dry-run] [--force] [--receive-pack=] [--verbose] [--thin] [:] [...]\n" " --all and explicit specification are mutually exclusive."; static struct send_pack_args args; 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 void print_helper_status(struct ref *ref) { struct strbuf buf = STRBUF_INIT; for (; ref; ref = ref->next) { const char *msg = NULL; const char *res; switch(ref->status) { case REF_STATUS_NONE: res = "error"; msg = "no match"; break; case REF_STATUS_OK: res = "ok"; break; case REF_STATUS_UPTODATE: res = "ok"; msg = "up to date"; break; case REF_STATUS_REJECT_NONFASTFORWARD: res = "error"; msg = "non-fast forward"; break; case REF_STATUS_REJECT_NODELETE: case REF_STATUS_REMOTE_REJECT: res = "error"; break; case REF_STATUS_EXPECTING_REPORT: default: continue; } strbuf_reset(&buf); strbuf_addf(&buf, "%s %s", res, ref->name); if (ref->remote_status) msg = ref->remote_status; if (msg) { strbuf_addch(&buf, ' '); quote_two_c_style(&buf, "", msg, 0); } strbuf_addch(&buf, '\n'); safe_write(1, buf.buf, buf.len); } strbuf_release(&buf); } 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; 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 (!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_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 || args->quiet)) { packet_buf_write(&req_buf, "%s %s %s%c%s%s%s agent=%s", old_hex, new_hex, ref->name, 0, status_report ? " report-status" : "", use_sideband ? " side-band-64k" : "", quiet ? " quiet" : "", 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; } int cmd_send_pack(int argc, const char **argv, const char *prefix) { int i, nr_refspecs = 0; const char **refspecs = NULL; const char *remote_name = NULL; struct remote *remote = NULL; const char *dest = NULL; int fd[2]; struct child_process *conn; struct extra_have_objects extra_have; struct ref *remote_refs, *local_refs; int ret; int helper_status = 0; int send_all = 0; const char *receivepack = "git-receive-pack"; int flags; int nonfastforward = 0; int progress = -1; argv++; for (i = 1; i < argc; i++, argv++) { const char *arg = *argv; if (*arg == '-') { if (!prefixcmp(arg, "--receive-pack=")) { receivepack = arg + 15; continue; } if (!prefixcmp(arg, "--exec=")) { receivepack = arg + 7; continue; } if (!prefixcmp(arg, "--remote=")) { remote_name = arg + 9; continue; } if (!strcmp(arg, "--all")) { send_all = 1; continue; } if (!strcmp(arg, "--dry-run")) { args.dry_run = 1; continue; } if (!strcmp(arg, "--mirror")) { args.send_mirror = 1; continue; } if (!strcmp(arg, "--force")) { args.force_update = 1; continue; } if (!strcmp(arg, "--quiet")) { args.quiet = 1; continue; } if (!strcmp(arg, "--verbose")) { args.verbose = 1; continue; } if (!strcmp(arg, "--progress")) { progress = 1; continue; } if (!strcmp(arg, "--no-progress")) { progress = 0; continue; } if (!strcmp(arg, "--thin")) { args.use_thin_pack = 1; continue; } if (!strcmp(arg, "--stateless-rpc")) { args.stateless_rpc = 1; continue; } if (!strcmp(arg, "--helper-status")) { helper_status = 1; continue; } usage(send_pack_usage); } if (!dest) { dest = arg; continue; } refspecs = (const char **) argv; nr_refspecs = argc - i; break; } if (!dest) usage(send_pack_usage); /* * --all and --mirror are incompatible; neither makes sense * with any refspecs. */ if ((refspecs && (send_all || args.send_mirror)) || (send_all && args.send_mirror)) usage(send_pack_usage); if (remote_name) { remote = remote_get(remote_name); if (!remote_has_url(remote, dest)) { die("Destination %s is not a uri for %s", dest, remote_name); } } if (progress == -1) progress = !args.quiet && isatty(2); args.progress = progress; if (args.stateless_rpc) { conn = NULL; fd[0] = 0; fd[1] = 1; } else { conn = git_connect(fd, dest, receivepack, args.verbose ? CONNECT_VERBOSE : 0); } memset(&extra_have, 0, sizeof(extra_have)); get_remote_heads(fd[0], &remote_refs, REF_NORMAL, &extra_have); transport_verify_remote_names(nr_refspecs, refspecs); local_refs = get_local_heads(); flags = MATCH_REFS_NONE; if (send_all) flags |= MATCH_REFS_ALL; if (args.send_mirror) flags |= MATCH_REFS_MIRROR; /* match them up */ if (match_push_refs(local_refs, &remote_refs, nr_refspecs, refspecs, flags)) return -1; set_ref_status_for_push(remote_refs, args.send_mirror, args.force_update); ret = send_pack(&args, fd, conn, remote_refs, &extra_have); if (helper_status) print_helper_status(remote_refs); close(fd[1]); close(fd[0]); ret |= finish_connect(conn); if (!helper_status) transport_print_push_status(dest, remote_refs, args.verbose, 0, &nonfastforward); if (!args.dry_run && remote) { struct ref *ref; for (ref = remote_refs; ref; ref = ref->next) transport_update_tracking_ref(remote, ref, args.verbose); } if (!ret && !transport_refs_pushed(remote_refs)) fprintf(stderr, "Everything up-to-date\n"); return ret; }