#include "pkt-line.h"
#include "tag.h"
#include "object.h"
+#include "commit.h"
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, nr_our_refs = 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;
static int got_sha1(char *hex, unsigned char *sha1)
{
- int nr;
if (get_sha1_hex(hex, sha1))
die("git-upload-pack: expected SHA1 object, got '%s'", hex);
if (!has_sha1_file(sha1))
return 0;
- nr = nr_has;
- if (nr < MAX_HAS) {
- memcpy(has_sha1[nr], sha1, 20);
- nr_has = nr+1;
+ if (nr_has < MAX_HAS) {
+ struct object *o = lookup_object(sha1);
+ if (!(o && o->parsed))
+ o = parse_object(sha1);
+ if (!o)
+ die("oops (%s)", sha1_to_hex(sha1));
+ if (o->type == commit_type) {
+ struct commit_list *parents;
+ if (o->flags & THEY_HAVE)
+ return 0;
+ o->flags |= THEY_HAVE;
+ for (parents = ((struct commit*)o)->parents;
+ parents;
+ parents = parents->next)
+ parents->item->object.flags |= THEY_HAVE;
+ }
+ memcpy(has_sha1[nr_has++], sha1, 20);
}
return 1;
}
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;
+ save_commit_buffer = 0;
+
for(;;) {
len = packet_read_line(0, line, sizeof(line));
reset_timeout();
if (!len) {
- packet_write(1, "NAK\n");
+ 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)) {
- packet_write(1, "ACK %s\n", sha1_to_hex(sha1));
- break;
+ if (got_sha1(line+5, sha1) &&
+ (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 ? " continue" : "");
+ if (multi_ack)
+ memcpy(last_sha1, sha1, 20);
}
continue;
}
if (!strcmp(line, "done")) {
+ 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;
}
die("git-upload-pack: expected SHA1 list, got '%s'", line);
}
-
- for (;;) {
- len = packet_read_line(0, line, sizeof(line));
- reset_timeout();
- if (!len)
- continue;
- len = strip(line, len);
- if (!strncmp(line, "have ", 5)) {
- got_sha1(line+5, sha1);
- continue;
- }
- if (!strcmp(line, "done"))
- break;
- die("git-upload-pack: expected SHA1 list, got '%s'", line);
- }
- return 0;
}
static int receive_needs(void)
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;
/* We have sent all our refs already, and the other end
* should have chosen out of them; otherwise they are
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;