2005-06-30 02:09:05 +00:00
|
|
|
#include "cache.h"
|
2005-06-30 03:50:15 +00:00
|
|
|
#include "pkt-line.h"
|
2005-06-30 02:09:05 +00:00
|
|
|
|
|
|
|
static const char send_pack_usage[] = "git-send-pack [--exec=other] destination [heads]*";
|
|
|
|
|
|
|
|
static const char *exec = "git-receive-pack";
|
|
|
|
|
2005-06-30 05:31:41 +00:00
|
|
|
struct ref {
|
|
|
|
struct ref *next;
|
|
|
|
unsigned char old_sha1[20];
|
|
|
|
unsigned char new_sha1[20];
|
|
|
|
char name[0];
|
|
|
|
};
|
|
|
|
|
|
|
|
static struct ref *ref_list = NULL;
|
|
|
|
|
|
|
|
static int read_ref(const char *ref, unsigned char *sha1)
|
|
|
|
{
|
|
|
|
int fd, ret;
|
|
|
|
static char pathname[PATH_MAX];
|
|
|
|
char buffer[60];
|
|
|
|
const char *git_dir = gitenv(GIT_DIR_ENVIRONMENT) ? : DEFAULT_GIT_DIR_ENVIRONMENT;
|
|
|
|
|
|
|
|
snprintf(pathname, sizeof(pathname), "%s/%s", git_dir, ref);
|
|
|
|
fd = open(pathname, O_RDONLY);
|
|
|
|
if (fd < 0)
|
|
|
|
return -1;
|
|
|
|
ret = -1;
|
|
|
|
if (read(fd, buffer, sizeof(buffer)) >= 40)
|
|
|
|
ret = get_sha1_hex(buffer, sha1);
|
|
|
|
close(fd);
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
2005-06-30 02:09:05 +00:00
|
|
|
static int send_pack(int in, int out)
|
|
|
|
{
|
|
|
|
for (;;) {
|
2005-06-30 05:31:41 +00:00
|
|
|
unsigned char old_sha1[20];
|
|
|
|
unsigned char new_sha1[20];
|
2005-06-30 02:09:05 +00:00
|
|
|
static char buffer[1000];
|
2005-06-30 05:31:41 +00:00
|
|
|
char *name;
|
|
|
|
struct ref *n;
|
2005-06-30 03:50:15 +00:00
|
|
|
int len;
|
|
|
|
|
|
|
|
len = packet_read_line(in, buffer, sizeof(buffer));
|
2005-06-30 05:31:41 +00:00
|
|
|
if (!len)
|
|
|
|
break;
|
|
|
|
if (buffer[len-1] == '\n')
|
|
|
|
buffer[--len] = 0;
|
|
|
|
|
|
|
|
if (len < 42 || get_sha1_hex(buffer, old_sha1) || buffer[40] != ' ')
|
|
|
|
die("protocol error: expected sha/ref, got '%s'", buffer);
|
|
|
|
name = buffer + 41;
|
|
|
|
if (read_ref(name, new_sha1) < 0) {
|
|
|
|
fprintf(stderr, "no such local reference '%s'\n", name);
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
if (!has_sha1_file(old_sha1)) {
|
|
|
|
fprintf(stderr, "remote '%s' points to object I don't have\n", name);
|
2005-06-30 02:09:05 +00:00
|
|
|
continue;
|
|
|
|
}
|
2005-06-30 05:31:41 +00:00
|
|
|
if (!memcmp(old_sha1, new_sha1, 20)) {
|
|
|
|
fprintf(stderr, "'%s' unchanged\n", name);
|
|
|
|
} else {
|
|
|
|
char new_hex[60];
|
|
|
|
strcpy(new_hex, sha1_to_hex(new_sha1));
|
|
|
|
fprintf(stderr, "%s: updating from %s to %s\n", name, sha1_to_hex(old_sha1), new_hex);
|
|
|
|
}
|
|
|
|
n = xmalloc(sizeof(*n) + len - 40);
|
|
|
|
memcpy(n->old_sha1, old_sha1, 20);
|
|
|
|
memcpy(n->new_sha1, new_sha1, 20);
|
|
|
|
memcpy(n->name, buffer + 41, len - 40);
|
|
|
|
n->next = ref_list;
|
|
|
|
ref_list = n;
|
2005-06-30 02:09:05 +00:00
|
|
|
}
|
2005-06-30 03:50:15 +00:00
|
|
|
packet_flush(out);
|
2005-06-30 02:09:05 +00:00
|
|
|
close(out);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* First, make it shell-safe. We do this by just disallowing any
|
|
|
|
* special characters. Somebody who cares can do escaping and let
|
|
|
|
* through the rest. But since we're doing to feed this to ssh as
|
|
|
|
* a command line, we're going to be pretty damn anal for now.
|
|
|
|
*/
|
|
|
|
static char *shell_safe(char *url)
|
|
|
|
{
|
|
|
|
char *n = url;
|
|
|
|
unsigned char c;
|
|
|
|
static const char flags[256] = {
|
|
|
|
['0'...'9'] = 1,
|
|
|
|
['a'...'z'] = 1,
|
|
|
|
['A'...'Z'] = 1,
|
|
|
|
['.'] = 1, ['/'] = 1,
|
|
|
|
['-'] = 1, ['+'] = 1,
|
|
|
|
[':'] = 1
|
|
|
|
};
|
|
|
|
|
|
|
|
while ((c = *n++) != 0) {
|
|
|
|
if (flags[c] != 1)
|
|
|
|
die("I don't like '%c'. Sue me.", c);
|
|
|
|
}
|
|
|
|
return url;
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Yeah, yeah, fixme. Need to pass in the heads etc.
|
|
|
|
*/
|
|
|
|
static int setup_connection(int fd[2], char *url, char **heads)
|
|
|
|
{
|
|
|
|
char command[1024];
|
|
|
|
const char *host, *path;
|
|
|
|
char *colon;
|
|
|
|
int pipefd[2][2];
|
|
|
|
|
|
|
|
url = shell_safe(url);
|
|
|
|
host = NULL;
|
|
|
|
path = url;
|
|
|
|
colon = strchr(url, ':');
|
|
|
|
if (colon) {
|
|
|
|
*colon = 0;
|
|
|
|
host = url;
|
|
|
|
path = colon+1;
|
|
|
|
}
|
|
|
|
snprintf(command, sizeof(command), "%s %s", exec, path);
|
|
|
|
if (pipe(pipefd[0]) < 0 || pipe(pipefd[1]) < 0)
|
|
|
|
die("unable to create pipe pair for communication");
|
|
|
|
if (!fork()) {
|
|
|
|
dup2(pipefd[1][0], 0);
|
|
|
|
dup2(pipefd[0][1], 1);
|
|
|
|
close(pipefd[0][0]);
|
|
|
|
close(pipefd[0][1]);
|
|
|
|
close(pipefd[1][0]);
|
|
|
|
close(pipefd[1][1]);
|
|
|
|
if (host)
|
|
|
|
execlp("ssh", "ssh", host, command, NULL);
|
|
|
|
else
|
2005-06-30 03:50:15 +00:00
|
|
|
execlp("sh", "sh", "-c", command, NULL);
|
2005-06-30 02:09:05 +00:00
|
|
|
die("exec failed");
|
|
|
|
}
|
|
|
|
fd[0] = pipefd[0][0];
|
|
|
|
fd[1] = pipefd[1][1];
|
|
|
|
close(pipefd[0][1]);
|
|
|
|
close(pipefd[1][0]);
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
int main(int argc, char **argv)
|
|
|
|
{
|
|
|
|
int i, nr_heads = 0;
|
|
|
|
char *dest = NULL;
|
|
|
|
char **heads = NULL;
|
|
|
|
int fd[2];
|
|
|
|
|
|
|
|
argv++;
|
|
|
|
for (i = 1; i < argc; i++) {
|
|
|
|
char *arg = *argv++;
|
|
|
|
|
|
|
|
if (*arg == '-') {
|
|
|
|
if (!strncmp(arg, "--exec=", 7)) {
|
|
|
|
exec = arg + 7;
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
usage(send_pack_usage);
|
|
|
|
}
|
|
|
|
dest = arg;
|
|
|
|
heads = argv;
|
|
|
|
nr_heads = argc - i -1;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
if (!dest)
|
|
|
|
usage(send_pack_usage);
|
|
|
|
if (setup_connection(fd, dest, heads))
|
|
|
|
return 1;
|
|
|
|
return send_pack(fd[0], fd[1]);
|
|
|
|
}
|