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#include "cache.h"
#include "refs.h"
#include "pkt-line.h"
static const char upload_pack_usage[] = "git-upload-pack <dir>";
static int got_sha1(char *hex, unsigned char *sha1)
{
if (get_sha1_hex(hex, sha1))
die("git-upload-pack: expected SHA1 object, got '%s'", hex);
return has_sha1_file(sha1);
}
static int get_common_commits(void)
{
static char line[1000];
unsigned char sha1[20];
int len;
for(;;) {
len = packet_read_line(0, line, sizeof(line));
if (!len) {
packet_write(1, "NAK\n");
continue;
}
if (line[len-1] == '\n')
line[--len] = 0;
if (!strncmp(line, "have ", 5)) {
if (got_sha1(line+5, sha1)) {
packet_write(1, "ACK %s\n", sha1_to_hex(sha1));
break;
}
continue;
}
if (!strcmp(line, "done")) {
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));
if (!len)
break;
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 send_ref(const char *refname, const unsigned char *sha1)
{
packet_write(1, "%s %s\n", sha1_to_hex(sha1), refname);
return 0;
}
static int upload_pack(void)
{
for_each_ref(send_ref);
packet_flush(1);
get_common_commits();
return 0;
}
int main(int argc, char **argv)
{
const char *dir;
if (argc != 2)
usage(upload_pack_usage);
dir = argv[1];
if (chdir(dir))
die("git-upload-pack unable to chdir to %s", dir);
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);
setenv("GIT_DIR", ".", 1);
upload_pack();
return 0;
}
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