6 #include "run-command.h"
11 #include "transport.h"
13 #include "sha1-array.h"
15 static int feed_object(const unsigned char *sha1
, int fd
, int negative
)
19 if (negative
&& !has_sha1_file(sha1
))
22 memcpy(buf
+ negative
, sha1_to_hex(sha1
), 40);
25 buf
[40 + negative
] = '\n';
26 return write_or_whine(fd
, buf
, 41 + negative
, "send-pack: send refs");
30 * Make a pack stream and spit it out into file descriptor fd
32 static int pack_objects(int fd
, struct ref
*refs
, struct sha1_array
*extra
, struct send_pack_args
*args
)
35 * The child becomes pack-objects --revs; we feed
36 * the revision parameters to it via its stdin and
37 * let its stdout go back to the other end.
39 const char *argv
[] = {
41 "--all-progress-implied",
50 struct child_process po
;
54 if (args
->use_thin_pack
)
56 if (args
->use_ofs_delta
)
57 argv
[i
++] = "--delta-base-offset";
58 if (args
->quiet
|| !args
->progress
)
61 argv
[i
++] = "--progress";
62 memset(&po
, 0, sizeof(po
));
65 po
.out
= args
->stateless_rpc
? -1 : fd
;
67 if (start_command(&po
))
68 die_errno("git pack-objects failed");
71 * We feed the pack-objects we just spawned with revision
72 * parameters by writing to the pipe.
74 for (i
= 0; i
< extra
->nr
; i
++)
75 if (!feed_object(extra
->sha1
[i
], po
.in
, 1))
79 if (!is_null_sha1(refs
->old_sha1
) &&
80 !feed_object(refs
->old_sha1
, po
.in
, 1))
82 if (!is_null_sha1(refs
->new_sha1
) &&
83 !feed_object(refs
->new_sha1
, po
.in
, 0))
90 if (args
->stateless_rpc
) {
91 char *buf
= xmalloc(LARGE_PACKET_MAX
);
93 ssize_t n
= xread(po
.out
, buf
, LARGE_PACKET_MAX
);
96 send_sideband(fd
, -1, buf
, n
, LARGE_PACKET_MAX
);
103 if (finish_command(&po
))
108 static int receive_status(int in
, struct ref
*refs
)
112 char *line
= packet_read_line(in
, NULL
);
113 if (!starts_with(line
, "unpack "))
114 return error("did not receive remote status");
115 if (strcmp(line
, "unpack ok")) {
116 error("unpack failed: %s", line
+ 7);
123 line
= packet_read_line(in
, NULL
);
126 if (!starts_with(line
, "ok ") && !starts_with(line
, "ng ")) {
127 error("invalid ref status from remote: %s", line
);
133 msg
= strchr(refname
, ' ');
137 /* first try searching at our hint, falling back to all refs */
139 hint
= find_ref_by_name(hint
, refname
);
141 hint
= find_ref_by_name(refs
, refname
);
143 warning("remote reported status on unknown ref: %s",
147 if (hint
->status
!= REF_STATUS_EXPECTING_REPORT
) {
148 warning("remote reported status on unexpected ref: %s",
153 if (line
[0] == 'o' && line
[1] == 'k')
154 hint
->status
= REF_STATUS_OK
;
156 hint
->status
= REF_STATUS_REMOTE_REJECT
;
160 hint
->remote_status
= xstrdup(msg
);
161 /* start our next search from the next ref */
167 static int sideband_demux(int in
, int out
, void *data
)
173 ret
= recv_sideband("send-pack", fd
[0], out
);
178 static int advertise_shallow_grafts_cb(const struct commit_graft
*graft
, void *cb
)
180 struct strbuf
*sb
= cb
;
181 if (graft
->nr_parent
== -1)
182 packet_buf_write(sb
, "shallow %s\n", sha1_to_hex(graft
->sha1
));
186 static void advertise_shallow_grafts_buf(struct strbuf
*sb
)
188 if (!is_repository_shallow())
190 for_each_commit_graft(advertise_shallow_grafts_cb
, sb
);
193 static int ref_update_to_be_sent(const struct ref
*ref
, const struct send_pack_args
*args
)
195 if (!ref
->peer_ref
&& !args
->send_mirror
)
198 /* Check for statuses set by set_ref_status_for_push() */
199 switch (ref
->status
) {
200 case REF_STATUS_REJECT_NONFASTFORWARD
:
201 case REF_STATUS_REJECT_ALREADY_EXISTS
:
202 case REF_STATUS_REJECT_FETCH_FIRST
:
203 case REF_STATUS_REJECT_NEEDS_FORCE
:
204 case REF_STATUS_REJECT_STALE
:
205 case REF_STATUS_REJECT_NODELETE
:
206 case REF_STATUS_UPTODATE
:
213 int send_pack(struct send_pack_args
*args
,
214 int fd
[], struct child_process
*conn
,
215 struct ref
*remote_refs
,
216 struct sha1_array
*extra_have
)
220 struct strbuf req_buf
= STRBUF_INIT
;
221 struct strbuf cap_buf
= STRBUF_INIT
;
223 int need_pack_data
= 0;
224 int allow_deleting_refs
= 0;
225 int status_report
= 0;
226 int use_sideband
= 0;
227 int quiet_supported
= 0;
228 int agent_supported
= 0;
229 unsigned cmds_sent
= 0;
233 /* Does the other end support the reporting? */
234 if (server_supports("report-status"))
236 if (server_supports("delete-refs"))
237 allow_deleting_refs
= 1;
238 if (server_supports("ofs-delta"))
239 args
->use_ofs_delta
= 1;
240 if (server_supports("side-band-64k"))
242 if (server_supports("quiet"))
244 if (server_supports("agent"))
246 if (server_supports("no-thin"))
247 args
->use_thin_pack
= 0;
250 fprintf(stderr
, "No refs in common and none specified; doing nothing.\n"
251 "Perhaps you should specify a branch such as 'master'.\n");
256 strbuf_addstr(&cap_buf
, " report-status");
258 strbuf_addstr(&cap_buf
, " side-band-64k");
259 if (quiet_supported
&& (args
->quiet
|| !args
->progress
))
260 strbuf_addstr(&cap_buf
, " quiet");
262 strbuf_addf(&cap_buf
, " agent=%s", git_user_agent_sanitized());
265 * NEEDSWORK: why does delete-refs have to be so specific to
266 * send-pack machinery that set_ref_status_for_push() cannot
267 * set this bit for us???
269 for (ref
= remote_refs
; ref
; ref
= ref
->next
)
270 if (ref
->deletion
&& !allow_deleting_refs
)
271 ref
->status
= REF_STATUS_REJECT_NODELETE
;
274 advertise_shallow_grafts_buf(&req_buf
);
277 * Clear the status for each ref and see if we need to send
280 for (ref
= remote_refs
; ref
; ref
= ref
->next
) {
281 if (!ref_update_to_be_sent(ref
, args
))
287 if (args
->dry_run
|| !status_report
)
288 ref
->status
= REF_STATUS_OK
;
290 ref
->status
= REF_STATUS_EXPECTING_REPORT
;
294 * Finally, tell the other end!
296 for (ref
= remote_refs
; ref
; ref
= ref
->next
) {
297 char *old_hex
, *new_hex
;
302 if (!ref_update_to_be_sent(ref
, args
))
305 old_hex
= sha1_to_hex(ref
->old_sha1
);
306 new_hex
= sha1_to_hex(ref
->new_sha1
);
308 packet_buf_write(&req_buf
,
310 old_hex
, new_hex
, ref
->name
, 0,
313 packet_buf_write(&req_buf
, "%s %s %s",
314 old_hex
, new_hex
, ref
->name
);
318 if (args
->stateless_rpc
) {
319 if (!args
->dry_run
&& (cmds_sent
|| is_repository_shallow())) {
320 packet_buf_flush(&req_buf
);
321 send_sideband(out
, -1, req_buf
.buf
, req_buf
.len
, LARGE_PACKET_MAX
);
324 write_or_die(out
, req_buf
.buf
, req_buf
.len
);
327 strbuf_release(&req_buf
);
328 strbuf_release(&cap_buf
);
330 if (use_sideband
&& cmds_sent
) {
331 memset(&demux
, 0, sizeof(demux
));
332 demux
.proc
= sideband_demux
;
335 if (start_async(&demux
))
336 die("send-pack: unable to fork off sideband demultiplexer");
340 if (need_pack_data
&& cmds_sent
) {
341 if (pack_objects(out
, remote_refs
, extra_have
, args
) < 0) {
342 for (ref
= remote_refs
; ref
; ref
= ref
->next
)
343 ref
->status
= REF_STATUS_NONE
;
344 if (args
->stateless_rpc
)
346 if (git_connection_is_socket(conn
))
347 shutdown(fd
[0], SHUT_WR
);
349 finish_async(&demux
);
353 if (!args
->stateless_rpc
)
354 /* Closed by pack_objects() via start_command() */
357 if (args
->stateless_rpc
&& cmds_sent
)
360 if (status_report
&& cmds_sent
)
361 ret
= receive_status(in
, remote_refs
);
364 if (args
->stateless_rpc
)
367 if (use_sideband
&& cmds_sent
) {
368 if (finish_async(&demux
)) {
369 error("error in sideband demultiplexer");
381 for (ref
= remote_refs
; ref
; ref
= ref
->next
) {
382 switch (ref
->status
) {
383 case REF_STATUS_NONE
:
384 case REF_STATUS_UPTODATE
: