git/builtin/send-pack.c
Junio C Hamano 92251b1b5b Merge branch 'nd/shallow-clone'
Fetching from a shallow-cloned repository used to be forbidden,
primarily because the codepaths involved were not carefully vetted
and we did not bother supporting such usage. This attempts to allow
object transfer out of a shallow-cloned repository in a controlled
way (i.e. the receiver become a shallow repository with truncated
history).

* nd/shallow-clone: (31 commits)
  t5537: fix incorrect expectation in test case 10
  shallow: remove unused code
  send-pack.c: mark a file-local function static
  git-clone.txt: remove shallow clone limitations
  prune: clean .git/shallow after pruning objects
  clone: use git protocol for cloning shallow repo locally
  send-pack: support pushing from a shallow clone via http
  receive-pack: support pushing to a shallow clone via http
  smart-http: support shallow fetch/clone
  remote-curl: pass ref SHA-1 to fetch-pack as well
  send-pack: support pushing to a shallow clone
  receive-pack: allow pushes that update .git/shallow
  connected.c: add new variant that runs with --shallow-file
  add GIT_SHALLOW_FILE to propagate --shallow-file to subprocesses
  receive/send-pack: support pushing from a shallow clone
  receive-pack: reorder some code in unpack()
  fetch: add --update-shallow to accept refs that update .git/shallow
  upload-pack: make sure deepening preserves shallow roots
  fetch: support fetching from a shallow repository
  clone: support remote shallow repository
  ...
2014-01-17 12:21:20 -08:00

280 lines
5.9 KiB
C

#include "builtin.h"
#include "commit.h"
#include "refs.h"
#include "pkt-line.h"
#include "sideband.h"
#include "run-command.h"
#include "remote.h"
#include "connect.h"
#include "send-pack.h"
#include "quote.h"
#include "transport.h"
#include "version.h"
#include "sha1-array.h"
static const char send_pack_usage[] =
"git send-pack [--all | --mirror] [--dry-run] [--force] [--receive-pack=<git-receive-pack>] [--verbose] [--thin] [<host>:]<directory> [<ref>...]\n"
" --all and explicit <ref> specification are mutually exclusive.";
static struct send_pack_args args;
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_FETCH_FIRST:
res = "error";
msg = "fetch first";
break;
case REF_STATUS_REJECT_NEEDS_FORCE:
res = "error";
msg = "needs force";
break;
case REF_STATUS_REJECT_STALE:
res = "error";
msg = "stale info";
break;
case REF_STATUS_REJECT_ALREADY_EXISTS:
res = "error";
msg = "already exists";
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');
write_or_die(1, buf.buf, buf.len);
}
strbuf_release(&buf);
}
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 sha1_array extra_have = SHA1_ARRAY_INIT;
struct sha1_array shallow = SHA1_ARRAY_INIT;
struct ref *remote_refs, *local_refs;
int ret;
int helper_status = 0;
int send_all = 0;
const char *receivepack = "git-receive-pack";
int flags;
unsigned int reject_reasons;
int progress = -1;
struct push_cas_option cas = {0};
argv++;
for (i = 1; i < argc; i++, argv++) {
const char *arg = *argv;
if (*arg == '-') {
if (starts_with(arg, "--receive-pack=")) {
receivepack = arg + 15;
continue;
}
if (starts_with(arg, "--exec=")) {
receivepack = arg + 7;
continue;
}
if (starts_with(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;
}
if (!strcmp(arg, "--" CAS_OPT_NAME)) {
if (parse_push_cas_option(&cas, NULL, 0) < 0)
exit(1);
continue;
}
if (!strcmp(arg, "--no-" CAS_OPT_NAME)) {
if (parse_push_cas_option(&cas, NULL, 1) < 0)
exit(1);
continue;
}
if (starts_with(arg, "--" CAS_OPT_NAME "=")) {
if (parse_push_cas_option(&cas,
strchr(arg, '=') + 1, 0) < 0)
exit(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);
}
get_remote_heads(fd[0], NULL, 0, &remote_refs, REF_NORMAL,
&extra_have, &shallow);
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;
if (!is_empty_cas(&cas))
apply_push_cas(&cas, remote, remote_refs);
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, &reject_reasons);
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;
}