9 #include "run-command.h"
11 #include "string-list.h"
14 #include "credential.h"
15 #include "oid-array.h"
16 #include "send-pack.h"
19 #include "transport.h"
21 static struct remote *remote;
22 /* always ends with a trailing slash */
23 static struct strbuf url = STRBUF_INIT;
29 struct string_list deepen_not;
30 struct string_list push_options;
32 unsigned progress : 1,
33 check_self_contained_and_connected : 1,
39 /* One of the SEND_PACK_PUSH_CERT_* constants. */
43 /* see documentation of corresponding flag in fetch-pack.h */
49 const struct git_hash_algo *hash_algo;
51 static struct options options;
52 static struct string_list cas_options = STRING_LIST_INIT_DUP;
54 static int set_option(const char *name, const char *value)
56 if (!strcmp(name, "verbosity")) {
58 int v = strtol(value, &end, 10);
59 if (value == end || *end)
61 options.verbosity = v;
64 else if (!strcmp(name, "progress")) {
65 if (!strcmp(value, "true"))
67 else if (!strcmp(value, "false"))
73 else if (!strcmp(name, "depth")) {
75 unsigned long v = strtoul(value, &end, 10);
76 if (value == end || *end)
81 else if (!strcmp(name, "deepen-since")) {
82 options.deepen_since = xstrdup(value);
85 else if (!strcmp(name, "deepen-not")) {
86 string_list_append(&options.deepen_not, value);
89 else if (!strcmp(name, "deepen-relative")) {
90 if (!strcmp(value, "true"))
91 options.deepen_relative = 1;
92 else if (!strcmp(value, "false"))
93 options.deepen_relative = 0;
98 else if (!strcmp(name, "followtags")) {
99 if (!strcmp(value, "true"))
100 options.followtags = 1;
101 else if (!strcmp(value, "false"))
102 options.followtags = 0;
107 else if (!strcmp(name, "dry-run")) {
108 if (!strcmp(value, "true"))
110 else if (!strcmp(value, "false"))
116 else if (!strcmp(name, "check-connectivity")) {
117 if (!strcmp(value, "true"))
118 options.check_self_contained_and_connected = 1;
119 else if (!strcmp(value, "false"))
120 options.check_self_contained_and_connected = 0;
125 else if (!strcmp(name, "cas")) {
126 struct strbuf val = STRBUF_INIT;
127 strbuf_addstr(&val, "--force-with-lease=");
129 strbuf_addstr(&val, value);
130 else if (unquote_c_style(&val, value, NULL))
132 string_list_append(&cas_options, val.buf);
133 strbuf_release(&val);
135 } else if (!strcmp(name, "cloning")) {
136 if (!strcmp(value, "true"))
138 else if (!strcmp(value, "false"))
143 } else if (!strcmp(name, "update-shallow")) {
144 if (!strcmp(value, "true"))
145 options.update_shallow = 1;
146 else if (!strcmp(value, "false"))
147 options.update_shallow = 0;
151 } else if (!strcmp(name, "pushcert")) {
152 if (!strcmp(value, "true"))
153 options.push_cert = SEND_PACK_PUSH_CERT_ALWAYS;
154 else if (!strcmp(value, "false"))
155 options.push_cert = SEND_PACK_PUSH_CERT_NEVER;
156 else if (!strcmp(value, "if-asked"))
157 options.push_cert = SEND_PACK_PUSH_CERT_IF_ASKED;
161 } else if (!strcmp(name, "atomic")) {
162 if (!strcmp(value, "true"))
164 else if (!strcmp(value, "false"))
169 } else if (!strcmp(name, "push-option")) {
171 string_list_append(&options.push_options, value);
173 struct strbuf unquoted = STRBUF_INIT;
174 if (unquote_c_style(&unquoted, value, NULL) < 0)
175 die(_("invalid quoting in push-option value: '%s'"), value);
176 string_list_append_nodup(&options.push_options,
177 strbuf_detach(&unquoted, NULL));
181 #if LIBCURL_VERSION_NUM >= 0x070a08
182 } else if (!strcmp(name, "family")) {
183 if (!strcmp(value, "ipv4"))
184 git_curl_ipresolve = CURL_IPRESOLVE_V4;
185 else if (!strcmp(value, "ipv6"))
186 git_curl_ipresolve = CURL_IPRESOLVE_V6;
187 else if (!strcmp(value, "all"))
188 git_curl_ipresolve = CURL_IPRESOLVE_WHATEVER;
192 #endif /* LIBCURL_VERSION_NUM >= 0x070a08 */
193 } else if (!strcmp(name, "from-promisor")) {
194 options.from_promisor = 1;
196 } else if (!strcmp(name, "no-dependents")) {
197 options.no_dependents = 1;
199 } else if (!strcmp(name, "filter")) {
200 options.filter = xstrdup(value);
202 } else if (!strcmp(name, "object-format")) {
204 options.object_format = 1;
205 if (strcmp(value, "true")) {
206 algo = hash_algo_by_name(value);
207 if (algo == GIT_HASH_UNKNOWN)
208 die("unknown object format '%s'", value);
209 options.hash_algo = &hash_algos[algo];
213 return 1 /* unsupported */;
223 struct oid_array shallow;
224 enum protocol_version version;
225 unsigned proto_git : 1;
227 static struct discovery *last_discovery;
229 static struct ref *parse_git_refs(struct discovery *heads, int for_push)
231 struct ref *list = NULL;
232 struct packet_reader reader;
234 packet_reader_init(&reader, -1, heads->buf, heads->len,
235 PACKET_READ_CHOMP_NEWLINE |
236 PACKET_READ_GENTLE_ON_EOF |
237 PACKET_READ_DIE_ON_ERR_PACKET);
239 heads->version = discover_version(&reader);
240 switch (heads->version) {
243 * Do nothing. This isn't a list of refs but rather a
244 * capability advertisement. Client would have run
245 * 'stateless-connect' so we'll dump this capability listing
246 * and let them request the refs themselves.
251 get_remote_heads(&reader, &list, for_push ? REF_NORMAL : 0,
252 NULL, &heads->shallow);
253 options.hash_algo = reader.hash_algo;
255 case protocol_unknown_version:
256 BUG("unknown protocol version");
262 static const struct git_hash_algo *detect_hash_algo(struct discovery *heads)
264 const char *p = memchr(heads->buf, '\t', heads->len);
267 return the_hash_algo;
269 algo = hash_algo_by_length((p - heads->buf) / 2);
270 if (algo == GIT_HASH_UNKNOWN)
272 return &hash_algos[algo];
275 static struct ref *parse_info_refs(struct discovery *heads)
277 char *data, *start, *mid;
281 struct ref *refs = NULL;
282 struct ref *ref = NULL;
283 struct ref *last_ref = NULL;
285 options.hash_algo = detect_hash_algo(heads);
286 if (!options.hash_algo)
287 die("%sinfo/refs not valid: could not determine hash algorithm; "
288 "is this a git repository?",
289 transport_anonymize_url(url.buf));
294 while (i < heads->len) {
300 if (data[i] == '\n') {
301 if (mid - start != options.hash_algo->hexsz)
302 die(_("%sinfo/refs not valid: is this a git repository?"),
303 transport_anonymize_url(url.buf));
306 ref = alloc_ref(ref_name);
307 get_oid_hex_algop(start, &ref->old_oid, options.hash_algo);
311 last_ref->next = ref;
318 ref = alloc_ref("HEAD");
319 if (!http_fetch_ref(url.buf, ref) &&
320 !resolve_remote_symref(ref, refs)) {
330 static void free_discovery(struct discovery *d)
333 if (d == last_discovery)
334 last_discovery = NULL;
335 free(d->shallow.oid);
343 static int show_http_message(struct strbuf *type, struct strbuf *charset,
349 * We only show text/plain parts, as other types are likely
350 * to be ugly to look at on the user's terminal.
352 if (strcmp(type->buf, "text/plain"))
355 strbuf_reencode(msg, charset->buf, get_log_output_encoding());
363 eol = strchrnul(p, '\n');
364 fprintf(stderr, "remote: %.*s\n", (int)(eol - p), p);
370 static int get_protocol_http_header(enum protocol_version version,
371 struct strbuf *header)
374 strbuf_addf(header, GIT_PROTOCOL_HEADER ": version=%d",
383 static void check_smart_http(struct discovery *d, const char *service,
387 struct packet_reader reader;
390 * If we don't see x-$service-advertisement, then it's not smart-http.
391 * But once we do, we commit to it and assume any other protocol
392 * violations are hard errors.
394 if (!skip_prefix(type->buf, "application/x-", &p) ||
395 !skip_prefix(p, service, &p) ||
396 strcmp(p, "-advertisement"))
399 packet_reader_init(&reader, -1, d->buf, d->len,
400 PACKET_READ_CHOMP_NEWLINE |
401 PACKET_READ_DIE_ON_ERR_PACKET);
402 if (packet_reader_read(&reader) != PACKET_READ_NORMAL)
403 die(_("invalid server response; expected service, got flush packet"));
405 if (skip_prefix(reader.line, "# service=", &p) && !strcmp(p, service)) {
407 * The header can include additional metadata lines, up
408 * until a packet flush marker. Ignore these now, but
409 * in the future we might start to scan them.
412 packet_reader_read(&reader);
413 if (reader.pktlen <= 0) {
419 * v0 smart http; callers expect us to soak up the
420 * service and header packets
422 d->buf = reader.src_buffer;
423 d->len = reader.src_len;
426 } else if (!strcmp(reader.line, "version 2")) {
428 * v2 smart http; do not consume version packet, which will
429 * be handled elsewhere.
434 die(_("invalid server response; got '%s'"), reader.line);
438 static struct discovery *discover_refs(const char *service, int for_push)
440 struct strbuf type = STRBUF_INIT;
441 struct strbuf charset = STRBUF_INIT;
442 struct strbuf buffer = STRBUF_INIT;
443 struct strbuf refs_url = STRBUF_INIT;
444 struct strbuf effective_url = STRBUF_INIT;
445 struct strbuf protocol_header = STRBUF_INIT;
446 struct string_list extra_headers = STRING_LIST_INIT_DUP;
447 struct discovery *last = last_discovery;
448 int http_ret, maybe_smart = 0;
449 struct http_get_options http_options;
450 enum protocol_version version = get_protocol_version_config();
452 if (last && !strcmp(service, last->service))
454 free_discovery(last);
456 strbuf_addf(&refs_url, "%sinfo/refs", url.buf);
457 if ((starts_with(url.buf, "http://") || starts_with(url.buf, "https://")) &&
458 git_env_bool("GIT_SMART_HTTP", 1)) {
460 if (!strchr(url.buf, '?'))
461 strbuf_addch(&refs_url, '?');
463 strbuf_addch(&refs_url, '&');
464 strbuf_addf(&refs_url, "service=%s", service);
468 * NEEDSWORK: If we are trying to use protocol v2 and we are planning
469 * to perform a push, then fallback to v0 since the client doesn't know
470 * how to push yet using v2.
472 if (version == protocol_v2 && !strcmp("git-receive-pack", service))
473 version = protocol_v0;
475 /* Add the extra Git-Protocol header */
476 if (get_protocol_http_header(version, &protocol_header))
477 string_list_append(&extra_headers, protocol_header.buf);
479 memset(&http_options, 0, sizeof(http_options));
480 http_options.content_type = &type;
481 http_options.charset = &charset;
482 http_options.effective_url = &effective_url;
483 http_options.base_url = &url;
484 http_options.extra_headers = &extra_headers;
485 http_options.initial_request = 1;
486 http_options.no_cache = 1;
488 http_ret = http_get_strbuf(refs_url.buf, &buffer, &http_options);
492 case HTTP_MISSING_TARGET:
493 show_http_message(&type, &charset, &buffer);
494 die(_("repository '%s' not found"),
495 transport_anonymize_url(url.buf));
497 show_http_message(&type, &charset, &buffer);
498 die(_("Authentication failed for '%s'"),
499 transport_anonymize_url(url.buf));
501 show_http_message(&type, &charset, &buffer);
502 die(_("unable to access '%s': %s"),
503 transport_anonymize_url(url.buf), curl_errorstr);
506 if (options.verbosity && !starts_with(refs_url.buf, url.buf)) {
507 char *u = transport_anonymize_url(url.buf);
508 warning(_("redirecting to %s"), u);
512 last= xcalloc(1, sizeof(*last_discovery));
513 last->service = xstrdup(service);
514 last->buf_alloc = strbuf_detach(&buffer, &last->len);
515 last->buf = last->buf_alloc;
518 check_smart_http(last, service, &type);
521 last->refs = parse_git_refs(last, for_push);
523 last->refs = parse_info_refs(last);
525 strbuf_release(&refs_url);
526 strbuf_release(&type);
527 strbuf_release(&charset);
528 strbuf_release(&effective_url);
529 strbuf_release(&buffer);
530 strbuf_release(&protocol_header);
531 string_list_clear(&extra_headers, 0);
532 last_discovery = last;
536 static struct ref *get_refs(int for_push)
538 struct discovery *heads;
541 heads = discover_refs("git-receive-pack", for_push);
543 heads = discover_refs("git-upload-pack", for_push);
548 static void output_refs(struct ref *refs)
551 if (options.object_format && options.hash_algo) {
552 printf(":object-format %s\n", options.hash_algo->name);
554 for (posn = refs; posn; posn = posn->next) {
556 printf("@%s %s\n", posn->symref, posn->name);
558 printf("%s %s\n", hash_to_hex_algop(posn->old_oid.hash,
567 const char *service_name;
569 char *hdr_content_type;
571 char *protocol_header;
579 unsigned gzip_request : 1;
580 unsigned initial_buffer : 1;
583 * Whenever a pkt-line is read into buf, append the 4 characters
584 * denoting its length before appending the payload.
586 unsigned write_line_lengths : 1;
589 * Used by rpc_out; initialize to 0. This is true if a flush has been
590 * read, but the corresponding line length (if write_line_lengths is
591 * true) and EOF have not been sent to libcurl. Since each flush marks
592 * the end of a request, each flush must be completely sent before any
593 * further reading occurs.
595 unsigned flush_read_but_not_sent : 1;
599 * Appends the result of reading from rpc->out to the string represented by
600 * rpc->buf and rpc->len if there is enough space. Returns 1 if there was
601 * enough space, 0 otherwise.
603 * If rpc->write_line_lengths is true, appends the line length as a 4-byte
604 * hexadecimal string before appending the result described above.
606 * Writes the total number of bytes appended into appended.
608 static int rpc_read_from_out(struct rpc_state *rpc, int options,
610 enum packet_read_status *status) {
615 if (rpc->write_line_lengths) {
616 left = rpc->alloc - rpc->len - 4;
617 buf = rpc->buf + rpc->len + 4;
619 left = rpc->alloc - rpc->len;
620 buf = rpc->buf + rpc->len;
623 if (left < LARGE_PACKET_MAX)
626 *status = packet_read_with_status(rpc->out, NULL, NULL, buf,
627 left, &pktlen_raw, options);
628 if (*status != PACKET_READ_EOF) {
629 *appended = pktlen_raw + (rpc->write_line_lengths ? 4 : 0);
630 rpc->len += *appended;
633 if (rpc->write_line_lengths) {
635 case PACKET_READ_EOF:
636 if (!(options & PACKET_READ_GENTLE_ON_EOF))
637 die(_("shouldn't have EOF when not gentle on EOF"));
639 case PACKET_READ_NORMAL:
640 set_packet_header(buf - 4, *appended);
642 case PACKET_READ_DELIM:
643 memcpy(buf - 4, "0001", 4);
645 case PACKET_READ_FLUSH:
646 memcpy(buf - 4, "0000", 4);
648 case PACKET_READ_RESPONSE_END:
649 die(_("remote server sent stateless separator"));
656 static size_t rpc_out(void *ptr, size_t eltsize,
657 size_t nmemb, void *buffer_)
659 size_t max = eltsize * nmemb;
660 struct rpc_state *rpc = buffer_;
661 size_t avail = rpc->len - rpc->pos;
662 enum packet_read_status status;
665 rpc->initial_buffer = 0;
668 if (!rpc->flush_read_but_not_sent) {
669 if (!rpc_read_from_out(rpc, 0, &avail, &status))
670 BUG("The entire rpc->buf should be larger than LARGE_PACKET_MAX");
671 if (status == PACKET_READ_FLUSH)
672 rpc->flush_read_but_not_sent = 1;
675 * If flush_read_but_not_sent is true, we have already read one
676 * full request but have not fully sent it + EOF, which is why
677 * we need to refrain from reading.
680 if (rpc->flush_read_but_not_sent) {
683 * The line length either does not need to be sent at
684 * all or has already been completely sent. Now we can
685 * return 0, indicating EOF, meaning that the flush has
688 rpc->flush_read_but_not_sent = 0;
692 * If avail is non-zero, the line length for the flush still
693 * hasn't been fully sent. Proceed with sending the line
700 memcpy(ptr, rpc->buf + rpc->pos, avail);
705 #ifndef NO_CURL_IOCTL
706 static curlioerr rpc_ioctl(CURL *handle, int cmd, void *clientp)
708 struct rpc_state *rpc = clientp;
714 case CURLIOCMD_RESTARTREAD:
715 if (rpc->initial_buffer) {
719 error(_("unable to rewind rpc post data - try increasing http.postBuffer"));
720 return CURLIOE_FAILRESTART;
723 return CURLIOE_UNKNOWNCMD;
728 struct check_pktline_state {
734 static void check_pktline(struct check_pktline_state *state, const char *ptr, size_t size)
737 if (!state->remaining) {
738 int digits_remaining = 4 - state->len_filled;
739 if (digits_remaining > size)
740 digits_remaining = size;
741 memcpy(&state->len_buf[state->len_filled], ptr, digits_remaining);
742 state->len_filled += digits_remaining;
743 ptr += digits_remaining;
744 size -= digits_remaining;
746 if (state->len_filled == 4) {
747 state->remaining = packet_length(state->len_buf);
748 if (state->remaining < 0) {
749 die(_("remote-curl: bad line length character: %.4s"), state->len_buf);
750 } else if (state->remaining == 2) {
751 die(_("remote-curl: unexpected response end packet"));
752 } else if (state->remaining < 4) {
753 state->remaining = 0;
755 state->remaining -= 4;
757 state->len_filled = 0;
761 if (state->remaining) {
762 int remaining = state->remaining;
763 if (remaining > size)
767 state->remaining -= remaining;
773 struct rpc_state *rpc;
774 struct active_request_slot *slot;
776 struct check_pktline_state pktline_state;
780 * A callback for CURLOPT_WRITEFUNCTION. The return value is the bytes consumed
783 static size_t rpc_in(char *ptr, size_t eltsize,
784 size_t nmemb, void *buffer_)
786 size_t size = eltsize * nmemb;
787 struct rpc_in_data *data = buffer_;
790 if (curl_easy_getinfo(data->slot->curl, CURLINFO_RESPONSE_CODE,
791 &response_code) != CURLE_OK)
793 if (response_code >= 300)
796 data->rpc->any_written = 1;
797 if (data->check_pktline)
798 check_pktline(&data->pktline_state, ptr, size);
799 write_or_die(data->rpc->in, ptr, size);
803 static int run_slot(struct active_request_slot *slot,
804 struct slot_results *results)
807 struct slot_results results_buf;
810 results = &results_buf;
812 err = run_one_slot(slot, results);
814 if (err != HTTP_OK && err != HTTP_REAUTH) {
815 struct strbuf msg = STRBUF_INIT;
816 if (results->http_code && results->http_code != 200)
817 strbuf_addf(&msg, "HTTP %ld", results->http_code);
818 if (results->curl_result != CURLE_OK) {
820 strbuf_addch(&msg, ' ');
821 strbuf_addf(&msg, "curl %d", results->curl_result);
822 if (curl_errorstr[0]) {
823 strbuf_addch(&msg, ' ');
824 strbuf_addstr(&msg, curl_errorstr);
827 error(_("RPC failed; %s"), msg.buf);
828 strbuf_release(&msg);
834 static int probe_rpc(struct rpc_state *rpc, struct slot_results *results)
836 struct active_request_slot *slot;
837 struct curl_slist *headers = http_copy_default_headers();
838 struct strbuf buf = STRBUF_INIT;
841 slot = get_active_slot();
843 headers = curl_slist_append(headers, rpc->hdr_content_type);
844 headers = curl_slist_append(headers, rpc->hdr_accept);
846 curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 0);
847 curl_easy_setopt(slot->curl, CURLOPT_POST, 1);
848 curl_easy_setopt(slot->curl, CURLOPT_URL, rpc->service_url);
849 curl_easy_setopt(slot->curl, CURLOPT_ENCODING, NULL);
850 curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDS, "0000");
851 curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDSIZE, 4);
852 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, headers);
853 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, fwrite_buffer);
854 curl_easy_setopt(slot->curl, CURLOPT_FILE, &buf);
856 err = run_slot(slot, results);
858 curl_slist_free_all(headers);
859 strbuf_release(&buf);
863 static curl_off_t xcurl_off_t(size_t len)
865 uintmax_t size = len;
866 if (size > maximum_signed_value_of_type(curl_off_t))
867 die(_("cannot handle pushes this big"));
868 return (curl_off_t)size;
872 * If flush_received is true, do not attempt to read any more; just use what's
875 static int post_rpc(struct rpc_state *rpc, int stateless_connect, int flush_received)
877 struct active_request_slot *slot;
878 struct curl_slist *headers = http_copy_default_headers();
879 int use_gzip = rpc->gzip_request;
880 char *gzip_body = NULL;
881 size_t gzip_size = 0;
882 int err, large_request = 0;
883 int needs_100_continue = 0;
884 struct rpc_in_data rpc_in_data;
886 /* Try to load the entire request, if we can fit it into the
887 * allocated buffer space we can use HTTP/1.0 and avoid the
888 * chunked encoding mess.
890 if (!flush_received) {
893 enum packet_read_status status;
895 if (!rpc_read_from_out(rpc, 0, &n, &status)) {
900 if (status == PACKET_READ_FLUSH)
906 struct slot_results results;
909 err = probe_rpc(rpc, &results);
910 if (err == HTTP_REAUTH)
911 credential_fill(&http_auth);
912 } while (err == HTTP_REAUTH);
916 if (results.auth_avail & CURLAUTH_GSSNEGOTIATE)
917 needs_100_continue = 1;
920 headers = curl_slist_append(headers, rpc->hdr_content_type);
921 headers = curl_slist_append(headers, rpc->hdr_accept);
922 headers = curl_slist_append(headers, needs_100_continue ?
923 "Expect: 100-continue" : "Expect:");
925 /* Add the extra Git-Protocol header */
926 if (rpc->protocol_header)
927 headers = curl_slist_append(headers, rpc->protocol_header);
930 slot = get_active_slot();
932 curl_easy_setopt(slot->curl, CURLOPT_NOBODY, 0);
933 curl_easy_setopt(slot->curl, CURLOPT_POST, 1);
934 curl_easy_setopt(slot->curl, CURLOPT_URL, rpc->service_url);
935 curl_easy_setopt(slot->curl, CURLOPT_ENCODING, "");
938 /* The request body is large and the size cannot be predicted.
939 * We must use chunked encoding to send it.
941 headers = curl_slist_append(headers, "Transfer-Encoding: chunked");
942 rpc->initial_buffer = 1;
943 curl_easy_setopt(slot->curl, CURLOPT_READFUNCTION, rpc_out);
944 curl_easy_setopt(slot->curl, CURLOPT_INFILE, rpc);
945 #ifndef NO_CURL_IOCTL
946 curl_easy_setopt(slot->curl, CURLOPT_IOCTLFUNCTION, rpc_ioctl);
947 curl_easy_setopt(slot->curl, CURLOPT_IOCTLDATA, rpc);
949 if (options.verbosity > 1) {
950 fprintf(stderr, "POST %s (chunked)\n", rpc->service_name);
954 } else if (gzip_body) {
956 * If we are looping to retry authentication, then the previous
957 * run will have set up the headers and gzip buffer already,
958 * and we just need to send it.
960 curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDS, gzip_body);
961 curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDSIZE_LARGE, xcurl_off_t(gzip_size));
963 } else if (use_gzip && 1024 < rpc->len) {
964 /* The client backend isn't giving us compressed data so
965 * we can try to deflate it ourselves, this may save on
971 git_deflate_init_gzip(&stream, Z_BEST_COMPRESSION);
972 gzip_size = git_deflate_bound(&stream, rpc->len);
973 gzip_body = xmalloc(gzip_size);
975 stream.next_in = (unsigned char *)rpc->buf;
976 stream.avail_in = rpc->len;
977 stream.next_out = (unsigned char *)gzip_body;
978 stream.avail_out = gzip_size;
980 ret = git_deflate(&stream, Z_FINISH);
981 if (ret != Z_STREAM_END)
982 die(_("cannot deflate request; zlib deflate error %d"), ret);
984 ret = git_deflate_end_gently(&stream);
986 die(_("cannot deflate request; zlib end error %d"), ret);
988 gzip_size = stream.total_out;
990 headers = curl_slist_append(headers, "Content-Encoding: gzip");
991 curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDS, gzip_body);
992 curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDSIZE_LARGE, xcurl_off_t(gzip_size));
994 if (options.verbosity > 1) {
995 fprintf(stderr, "POST %s (gzip %lu to %lu bytes)\n",
997 (unsigned long)rpc->len, (unsigned long)gzip_size);
1001 /* We know the complete request size in advance, use the
1002 * more normal Content-Length approach.
1004 curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDS, rpc->buf);
1005 curl_easy_setopt(slot->curl, CURLOPT_POSTFIELDSIZE_LARGE, xcurl_off_t(rpc->len));
1006 if (options.verbosity > 1) {
1007 fprintf(stderr, "POST %s (%lu bytes)\n",
1008 rpc->service_name, (unsigned long)rpc->len);
1013 curl_easy_setopt(slot->curl, CURLOPT_HTTPHEADER, headers);
1014 curl_easy_setopt(slot->curl, CURLOPT_WRITEFUNCTION, rpc_in);
1015 rpc_in_data.rpc = rpc;
1016 rpc_in_data.slot = slot;
1017 rpc_in_data.check_pktline = stateless_connect;
1018 memset(&rpc_in_data.pktline_state, 0, sizeof(rpc_in_data.pktline_state));
1019 curl_easy_setopt(slot->curl, CURLOPT_FILE, &rpc_in_data);
1020 curl_easy_setopt(slot->curl, CURLOPT_FAILONERROR, 0);
1023 rpc->any_written = 0;
1024 err = run_slot(slot, NULL);
1025 if (err == HTTP_REAUTH && !large_request) {
1026 credential_fill(&http_auth);
1032 if (!rpc->any_written)
1035 if (rpc_in_data.pktline_state.len_filled)
1036 err = error(_("%d bytes of length header were received"), rpc_in_data.pktline_state.len_filled);
1037 if (rpc_in_data.pktline_state.remaining)
1038 err = error(_("%d bytes of body are still expected"), rpc_in_data.pktline_state.remaining);
1040 if (stateless_connect)
1041 packet_response_end(rpc->in);
1043 curl_slist_free_all(headers);
1048 static int rpc_service(struct rpc_state *rpc, struct discovery *heads,
1049 const char **client_argv, const struct strbuf *preamble,
1050 struct strbuf *rpc_result)
1052 const char *svc = rpc->service_name;
1053 struct strbuf buf = STRBUF_INIT;
1054 struct child_process client = CHILD_PROCESS_INIT;
1060 client.argv = client_argv;
1061 if (start_command(&client))
1063 write_or_die(client.in, preamble->buf, preamble->len);
1065 write_or_die(client.in, heads->buf, heads->len);
1067 rpc->alloc = http_post_buffer;
1068 rpc->buf = xmalloc(rpc->alloc);
1069 rpc->in = client.in;
1070 rpc->out = client.out;
1072 strbuf_addf(&buf, "%s%s", url.buf, svc);
1073 rpc->service_url = strbuf_detach(&buf, NULL);
1075 strbuf_addf(&buf, "Content-Type: application/x-%s-request", svc);
1076 rpc->hdr_content_type = strbuf_detach(&buf, NULL);
1078 strbuf_addf(&buf, "Accept: application/x-%s-result", svc);
1079 rpc->hdr_accept = strbuf_detach(&buf, NULL);
1081 if (get_protocol_http_header(heads->version, &buf))
1082 rpc->protocol_header = strbuf_detach(&buf, NULL);
1084 rpc->protocol_header = NULL;
1087 int n = packet_read(rpc->out, NULL, NULL, rpc->buf, rpc->alloc, 0);
1092 err |= post_rpc(rpc, 0, 0);
1098 strbuf_read(rpc_result, client.out, 0);
1102 if (xread(client.out, buf, sizeof(buf)) <= 0)
1109 err |= finish_command(&client);
1110 free(rpc->service_url);
1111 free(rpc->hdr_content_type);
1112 free(rpc->hdr_accept);
1113 free(rpc->protocol_header);
1115 strbuf_release(&buf);
1119 static int fetch_dumb(int nr_heads, struct ref **to_fetch)
1121 struct walker *walker;
1125 ALLOC_ARRAY(targets, nr_heads);
1126 if (options.depth || options.deepen_since)
1127 die(_("dumb http transport does not support shallow capabilities"));
1128 for (i = 0; i < nr_heads; i++)
1129 targets[i] = xstrdup(oid_to_hex(&to_fetch[i]->old_oid));
1131 walker = get_http_walker(url.buf);
1132 walker->get_verbosely = options.verbosity >= 3;
1133 walker->get_progress = options.progress;
1134 walker->get_recover = 0;
1135 ret = walker_fetch(walker, nr_heads, targets, NULL, NULL);
1136 walker_free(walker);
1138 for (i = 0; i < nr_heads; i++)
1142 return ret ? error(_("fetch failed.")) : 0;
1145 static int fetch_git(struct discovery *heads,
1146 int nr_heads, struct ref **to_fetch)
1148 struct rpc_state rpc;
1149 struct strbuf preamble = STRBUF_INIT;
1151 struct strvec args = STRVEC_INIT;
1152 struct strbuf rpc_result = STRBUF_INIT;
1154 strvec_pushl(&args, "fetch-pack", "--stateless-rpc",
1155 "--stdin", "--lock-pack", NULL);
1156 if (options.followtags)
1157 strvec_push(&args, "--include-tag");
1159 strvec_push(&args, "--thin");
1160 if (options.verbosity >= 3)
1161 strvec_pushl(&args, "-v", "-v", NULL);
1162 if (options.check_self_contained_and_connected)
1163 strvec_push(&args, "--check-self-contained-and-connected");
1164 if (options.cloning)
1165 strvec_push(&args, "--cloning");
1166 if (options.update_shallow)
1167 strvec_push(&args, "--update-shallow");
1168 if (!options.progress)
1169 strvec_push(&args, "--no-progress");
1171 strvec_pushf(&args, "--depth=%lu", options.depth);
1172 if (options.deepen_since)
1173 strvec_pushf(&args, "--shallow-since=%s", options.deepen_since);
1174 for (i = 0; i < options.deepen_not.nr; i++)
1175 strvec_pushf(&args, "--shallow-exclude=%s",
1176 options.deepen_not.items[i].string);
1177 if (options.deepen_relative && options.depth)
1178 strvec_push(&args, "--deepen-relative");
1179 if (options.from_promisor)
1180 strvec_push(&args, "--from-promisor");
1181 if (options.no_dependents)
1182 strvec_push(&args, "--no-dependents");
1184 strvec_pushf(&args, "--filter=%s", options.filter);
1185 strvec_push(&args, url.buf);
1187 for (i = 0; i < nr_heads; i++) {
1188 struct ref *ref = to_fetch[i];
1190 die(_("cannot fetch by sha1 over smart http"));
1191 packet_buf_write(&preamble, "%s %s\n",
1192 oid_to_hex(&ref->old_oid), ref->name);
1194 packet_buf_flush(&preamble);
1196 memset(&rpc, 0, sizeof(rpc));
1197 rpc.service_name = "git-upload-pack",
1198 rpc.gzip_request = 1;
1200 err = rpc_service(&rpc, heads, args.v, &preamble, &rpc_result);
1202 write_or_die(1, rpc_result.buf, rpc_result.len);
1203 strbuf_release(&rpc_result);
1204 strbuf_release(&preamble);
1205 strvec_clear(&args);
1209 static int fetch(int nr_heads, struct ref **to_fetch)
1211 struct discovery *d = discover_refs("git-upload-pack", 0);
1213 return fetch_git(d, nr_heads, to_fetch);
1215 return fetch_dumb(nr_heads, to_fetch);
1218 static void parse_fetch(struct strbuf *buf)
1220 struct ref **to_fetch = NULL;
1221 struct ref *list_head = NULL;
1222 struct ref **list = &list_head;
1223 int alloc_heads = 0, nr_heads = 0;
1227 if (skip_prefix(buf->buf, "fetch ", &p)) {
1230 struct object_id old_oid;
1233 if (parse_oid_hex(p, &old_oid, &q))
1234 die(_("protocol error: expected sha/ref, got '%s'"), p);
1240 die(_("protocol error: expected sha/ref, got '%s'"), p);
1242 ref = alloc_ref(name);
1243 oidcpy(&ref->old_oid, &old_oid);
1248 ALLOC_GROW(to_fetch, nr_heads + 1, alloc_heads);
1249 to_fetch[nr_heads++] = ref;
1252 die(_("http transport does not support %s"), buf->buf);
1255 if (strbuf_getline_lf(buf, stdin) == EOF)
1261 if (fetch(nr_heads, to_fetch))
1262 exit(128); /* error already reported */
1263 free_refs(list_head);
1271 static int push_dav(int nr_spec, const char **specs)
1273 struct child_process child = CHILD_PROCESS_INIT;
1277 strvec_push(&child.args, "http-push");
1278 strvec_push(&child.args, "--helper-status");
1279 if (options.dry_run)
1280 strvec_push(&child.args, "--dry-run");
1281 if (options.verbosity > 1)
1282 strvec_push(&child.args, "--verbose");
1283 strvec_push(&child.args, url.buf);
1284 for (i = 0; i < nr_spec; i++)
1285 strvec_push(&child.args, specs[i]);
1287 if (run_command(&child))
1288 die(_("git-http-push failed"));
1292 static int push_git(struct discovery *heads, int nr_spec, const char **specs)
1294 struct rpc_state rpc;
1297 struct string_list_item *cas_option;
1298 struct strbuf preamble = STRBUF_INIT;
1299 struct strbuf rpc_result = STRBUF_INIT;
1302 strvec_pushl(&args, "send-pack", "--stateless-rpc", "--helper-status",
1306 strvec_push(&args, "--thin");
1307 if (options.dry_run)
1308 strvec_push(&args, "--dry-run");
1309 if (options.push_cert == SEND_PACK_PUSH_CERT_ALWAYS)
1310 strvec_push(&args, "--signed=yes");
1311 else if (options.push_cert == SEND_PACK_PUSH_CERT_IF_ASKED)
1312 strvec_push(&args, "--signed=if-asked");
1314 strvec_push(&args, "--atomic");
1315 if (options.verbosity == 0)
1316 strvec_push(&args, "--quiet");
1317 else if (options.verbosity > 1)
1318 strvec_push(&args, "--verbose");
1319 for (i = 0; i < options.push_options.nr; i++)
1320 strvec_pushf(&args, "--push-option=%s",
1321 options.push_options.items[i].string);
1322 strvec_push(&args, options.progress ? "--progress" : "--no-progress");
1323 for_each_string_list_item(cas_option, &cas_options)
1324 strvec_push(&args, cas_option->string);
1325 strvec_push(&args, url.buf);
1327 strvec_push(&args, "--stdin");
1328 for (i = 0; i < nr_spec; i++)
1329 packet_buf_write(&preamble, "%s\n", specs[i]);
1330 packet_buf_flush(&preamble);
1332 memset(&rpc, 0, sizeof(rpc));
1333 rpc.service_name = "git-receive-pack",
1335 err = rpc_service(&rpc, heads, args.v, &preamble, &rpc_result);
1337 write_or_die(1, rpc_result.buf, rpc_result.len);
1338 strbuf_release(&rpc_result);
1339 strbuf_release(&preamble);
1340 strvec_clear(&args);
1344 static int push(int nr_spec, const char **specs)
1346 struct discovery *heads = discover_refs("git-receive-pack", 1);
1349 if (heads->proto_git)
1350 ret = push_git(heads, nr_spec, specs);
1352 ret = push_dav(nr_spec, specs);
1353 free_discovery(heads);
1357 static void parse_push(struct strbuf *buf)
1359 struct strvec specs = STRVEC_INIT;
1364 if (skip_prefix(buf->buf, "push ", &arg))
1365 strvec_push(&specs, arg);
1367 die(_("http transport does not support %s"), buf->buf);
1370 if (strbuf_getline_lf(buf, stdin) == EOF)
1376 ret = push(specs.nr, specs.v);
1381 exit(128); /* error already reported */
1384 strvec_clear(&specs);
1387 static int stateless_connect(const char *service_name)
1389 struct discovery *discover;
1390 struct rpc_state rpc;
1391 struct strbuf buf = STRBUF_INIT;
1394 * Run the info/refs request and see if the server supports protocol
1395 * v2. If and only if the server supports v2 can we successfully
1396 * establish a stateless connection, otherwise we need to tell the
1397 * client to fallback to using other transport helper functions to
1398 * complete their request.
1400 discover = discover_refs(service_name, 0);
1401 if (discover->version != protocol_v2) {
1402 printf("fallback\n");
1406 /* Stateless Connection established */
1411 rpc.service_name = service_name;
1412 rpc.service_url = xstrfmt("%s%s", url.buf, rpc.service_name);
1413 rpc.hdr_content_type = xstrfmt("Content-Type: application/x-%s-request", rpc.service_name);
1414 rpc.hdr_accept = xstrfmt("Accept: application/x-%s-result", rpc.service_name);
1415 if (get_protocol_http_header(discover->version, &buf)) {
1416 rpc.protocol_header = strbuf_detach(&buf, NULL);
1418 rpc.protocol_header = NULL;
1419 strbuf_release(&buf);
1421 rpc.buf = xmalloc(http_post_buffer);
1422 rpc.alloc = http_post_buffer;
1427 rpc.any_written = 0;
1428 rpc.gzip_request = 1;
1429 rpc.initial_buffer = 0;
1430 rpc.write_line_lengths = 1;
1431 rpc.flush_read_but_not_sent = 0;
1434 * Dump the capability listing that we got from the server earlier
1435 * during the info/refs request.
1437 write_or_die(rpc.in, discover->buf, discover->len);
1439 /* Until we see EOF keep sending POSTs */
1442 enum packet_read_status status;
1444 if (!rpc_read_from_out(&rpc, PACKET_READ_GENTLE_ON_EOF, &avail,
1446 BUG("The entire rpc->buf should be larger than LARGE_PACKET_MAX");
1447 if (status == PACKET_READ_EOF)
1449 if (post_rpc(&rpc, 1, status == PACKET_READ_FLUSH))
1450 /* We would have an err here */
1452 /* Reset the buffer for next request */
1456 free(rpc.service_url);
1457 free(rpc.hdr_content_type);
1458 free(rpc.hdr_accept);
1459 free(rpc.protocol_header);
1461 strbuf_release(&buf);
1466 int cmd_main(int argc, const char **argv)
1468 struct strbuf buf = STRBUF_INIT;
1471 setup_git_directory_gently(&nongit);
1473 error(_("remote-curl: usage: git remote-curl <remote> [<url>]"));
1477 options.verbosity = 1;
1478 options.progress = !!isatty(2);
1480 string_list_init(&options.deepen_not, 1);
1481 string_list_init(&options.push_options, 1);
1484 * Just report "remote-curl" here (folding all the various aliases
1485 * ("git-remote-http", "git-remote-https", and etc.) here since they
1486 * are all just copies of the same actual executable.
1488 trace2_cmd_name("remote-curl");
1490 remote = remote_get(argv[1]);
1493 end_url_with_slash(&url, argv[2]);
1495 end_url_with_slash(&url, remote->url[0]);
1498 http_init(remote, url.buf, 0);
1503 if (strbuf_getline_lf(&buf, stdin) == EOF) {
1505 error(_("remote-curl: error reading command stream from git"));
1510 if (starts_with(buf.buf, "fetch ")) {
1512 die(_("remote-curl: fetch attempted without a local repo"));
1515 } else if (!strcmp(buf.buf, "list") || starts_with(buf.buf, "list ")) {
1516 int for_push = !!strstr(buf.buf + 4, "for-push");
1517 output_refs(get_refs(for_push));
1519 } else if (starts_with(buf.buf, "push ")) {
1522 } else if (skip_prefix(buf.buf, "option ", &arg)) {
1523 char *value = strchr(arg, ' ');
1531 result = set_option(arg, value);
1534 else if (result < 0)
1535 printf("error invalid value\n");
1537 printf("unsupported\n");
1540 } else if (!strcmp(buf.buf, "capabilities")) {
1541 printf("stateless-connect\n");
1545 printf("check-connectivity\n");
1546 printf("object-format\n");
1549 } else if (skip_prefix(buf.buf, "stateless-connect ", &arg)) {
1550 if (!stateless_connect(arg))
1553 error(_("remote-curl: unknown command '%s' from git"), buf.buf);