static const char upload_pack_usage[] = "git-upload-pack [--strict] [--timeout=nn] <dir>";
#define THEY_HAVE (1U << 0)
+#define OUR_REF (1U << 1)
+#define WANTED (1U << 2)
#define MAX_HAS 256
#define MAX_NEEDS 256
-static int nr_has = 0, nr_needs = 0, multi_ack = 0;
+static int nr_has = 0, nr_needs = 0, multi_ack = 0, nr_our_refs = 0;
static unsigned char has_sha1[MAX_HAS][20];
static unsigned char needs_sha1[MAX_NEEDS][20];
static unsigned int timeout = 0;
{
int fd[2];
pid_t pid;
+ int create_full_pack = (nr_our_refs == nr_needs && !nr_has);
if (pipe(fd) < 0)
die("git-upload-pack: unable to create pipe");
char *buf;
char **p;
- if (MAX_NEEDS <= nr_needs)
- args = nr_has + 10;
+ if (create_full_pack)
+ args = 10;
else
args = nr_has + nr_needs + 5;
argv = xmalloc(args * sizeof(char *));
close(fd[1]);
*p++ = "git-rev-list";
*p++ = "--objects";
- if (MAX_NEEDS <= nr_needs)
+ if (create_full_pack || MAX_NEEDS <= nr_needs)
*p++ = "--all";
else {
for (i = 0; i < nr_needs; i++) {
buf += 41;
}
}
- for (i = 0; i < nr_has; i++) {
- *p++ = buf;
- *buf++ = '^';
- memcpy(buf, sha1_to_hex(has_sha1[i]), 41);
- buf += 41;
- }
+ if (!create_full_pack)
+ for (i = 0; i < nr_has; i++) {
+ *p++ = buf;
+ *buf++ = '^';
+ memcpy(buf, sha1_to_hex(has_sha1[i]), 41);
+ buf += 41;
+ }
*p++ = NULL;
execvp("git-rev-list", argv);
die("git-upload-pack: unable to exec git-rev-list");
static int get_common_commits(void)
{
static char line[1000];
- unsigned char sha1[20];
+ unsigned char sha1[20], last_sha1[20];
int len;
track_object_refs = 0;
reset_timeout();
if (!len) {
- if (multi_ack || nr_has == 0)
+ if (nr_has == 0 || multi_ack)
packet_write(1, "NAK\n");
continue;
}
len = strip(line, len);
if (!strncmp(line, "have ", 5)) {
if (got_sha1(line+5, sha1) &&
- (multi_ack || nr_has == 1))
+ (multi_ack || nr_has == 1)) {
+ if (nr_has >= MAX_HAS)
+ multi_ack = 0;
packet_write(1, "ACK %s%s\n",
sha1_to_hex(sha1),
- multi_ack && nr_has < MAX_HAS ?
- " continue" : "");
+ multi_ack ? " continue" : "");
+ if (multi_ack)
+ memcpy(last_sha1, sha1, 20);
+ }
continue;
}
if (!strcmp(line, "done")) {
- if (nr_has > 0)
+ if (nr_has > 0) {
+ if (multi_ack)
+ packet_write(1, "ACK %s\n",
+ sha1_to_hex(last_sha1));
return 0;
+ }
packet_write(1, "NAK\n");
return -1;
}
needs = 0;
for (;;) {
+ struct object *o;
unsigned char dummy[20], *sha1_buf;
len = packet_read_line(0, line, sizeof(line));
reset_timeout();
if (strncmp("want ", line, 5) || get_sha1_hex(line+5, sha1_buf))
die("git-upload-pack: protocol error, "
"expected to get sha, not '%s'", line);
-
if (strstr(line+45, "multi_ack"))
multi_ack = 1;
- needs++;
+ /* We have sent all our refs already, and the other end
+ * should have chosen out of them; otherwise they are
+ * asking for nonsense.
+ *
+ * Hmph. We may later want to allow "want" line that
+ * asks for something like "master~10" (symbolic)...
+ * would it make sense? I don't know.
+ */
+ o = lookup_object(sha1_buf);
+ if (!o || !(o->flags & OUR_REF))
+ die("git-upload-pack: not our ref %s", line+5);
+ if (!(o->flags & WANTED)) {
+ o->flags |= WANTED;
+ needs++;
+ }
}
}
static int send_ref(const char *refname, const unsigned char *sha1)
{
+ static char *capabilities = "multi_ack";
struct object *o = parse_object(sha1);
- packet_write(1, "%s %s\n", sha1_to_hex(sha1), refname);
+ if (capabilities)
+ packet_write(1, "%s %s%c%s\n", sha1_to_hex(sha1), refname,
+ 0, capabilities);
+ else
+ packet_write(1, "%s %s\n", sha1_to_hex(sha1), refname);
+ capabilities = NULL;
+ if (!(o->flags & OUR_REF)) {
+ o->flags |= OUR_REF;
+ nr_our_refs++;
+ }
if (o->type == tag_type) {
- o = deref_tag(o);
+ o = deref_tag(o, refname, 0);
packet_write(1, "%s %s^{}\n", sha1_to_hex(o->sha1), refname);
}
return 0;
int main(int argc, char **argv)
{
- const char *dir;
+ char *dir;
int i;
int strict = 0;
usage(upload_pack_usage);
dir = argv[i];
- /* chdir to the directory. If that fails, try appending ".git" */
- if (chdir(dir) < 0) {
- if (strict || chdir(mkpath("%s.git", dir)) < 0)
- die("git-upload-pack unable to chdir to %s", dir);
- }
- if (!strict)
- chdir(".git");
-
- if (access("objects", X_OK) || access("refs", X_OK))
- die("git-upload-pack: %s doesn't seem to be a git archive", dir);
+ if (!enter_repo(dir, strict))
+ die("'%s': unable to chdir or not a git archive", dir);
- putenv("GIT_DIR=.");
upload_pack();
return 0;
}