#include "pkt-line.h"
#include "quote.h"
#include "refs.h"
-#include <sys/wait.h>
-#include <sys/socket.h>
-#include <netinet/in.h>
-#include <arpa/inet.h>
-#include <netdb.h>
-#include <signal.h>
static char *server_capabilities;
* +A:B means overwrite remote B with local A.
* +A is a shorthand for +A:A.
* A is a shorthand for A:A.
+ * :B means delete remote B.
*/
static struct refspec *parse_ref_spec(int nr_refspec, char **refspec)
{
struct ref *refs,
struct ref **matched_ref)
{
- int match;
int patlen = strlen(pattern);
+ struct ref *matched_weak = NULL;
+ struct ref *matched = NULL;
+ int weak_match = 0;
+ int match = 0;
- for (match = 0; refs; refs = refs->next) {
+ for (weak_match = match = 0; refs; refs = refs->next) {
char *name = refs->name;
int namelen = strlen(name);
+ int weak_match;
+
if (namelen < patlen ||
memcmp(name + namelen - patlen, pattern, patlen))
continue;
if (namelen != patlen && name[namelen - patlen - 1] != '/')
continue;
- match++;
- *matched_ref = refs;
+
+ /* A match is "weak" if it is with refs outside
+ * heads or tags, and did not specify the pattern
+ * in full (e.g. "refs/remotes/origin/master") or at
+ * least from the toplevel (e.g. "remotes/origin/master");
+ * otherwise "git push $URL master" would result in
+ * ambiguity between remotes/origin/master and heads/master
+ * at the remote site.
+ */
+ if (namelen != patlen &&
+ patlen != namelen - 5 &&
+ strncmp(name, "refs/heads/", 11) &&
+ strncmp(name, "refs/tags/", 10)) {
+ /* We want to catch the case where only weak
+ * matches are found and there are multiple
+ * matches, and where more than one strong
+ * matches are found, as ambiguous. One
+ * strong match with zero or more weak matches
+ * are acceptable as a unique match.
+ */
+ matched_weak = refs;
+ weak_match++;
+ }
+ else {
+ matched = refs;
+ match++;
+ }
+ }
+ if (!matched) {
+ *matched_ref = matched_weak;
+ return weak_match;
+ }
+ else {
+ *matched_ref = matched;
+ return match;
}
- return match;
}
static void link_dst_tail(struct ref *ref, struct ref ***tail)
unsigned char sha1[20];
struct ref *ref;
int len;
+
+ if (!*name) {
+ ref = xcalloc(1, sizeof(*ref) + 20);
+ strcpy(ref->name, "(delete)");
+ hashclr(ref->new_sha1);
+ return ref;
+ }
if (get_sha1(name, sha1))
return NULL;
len = strlen(name) + 1;
break;
case 0:
/* The source could be in the get_sha1() format
- * not a reference name.
+ * not a reference name. :refs/other is a
+ * way to delete 'other' ref at the remote end.
*/
matched_src = try_explicit_object_name(rs[i].src);
if (matched_src)
int sockfd = git_tcp_connect_sock(host);
fd[0] = sockfd;
- fd[1] = sockfd;
+ fd[1] = dup(sockfd);
}
close(pipefd[1][0]);
}
+#define MAX_CMD_LEN 1024
+
/*
- * Yeah, yeah, fixme. Need to pass in the heads etc.
+ * This returns 0 if the transport protocol does not need fork(2),
+ * or a process id if it does. Once done, finish the connection
+ * with finish_connect() with the value returned from this function
+ * (it is safe to call finish_connect() with 0 to support the former
+ * case).
+ *
+ * Does not return a negative value on error; it just dies.
*/
-int git_connect(int fd[2], char *url, const char *prog)
+pid_t git_connect(int fd[2], char *url, const char *prog)
{
- char command[1024];
char *host, *path = url;
char *end;
int c;
if (pid < 0)
die("unable to fork");
if (!pid) {
- snprintf(command, sizeof(command), "%s %s", prog,
- sq_quote(path));
+ char command[MAX_CMD_LEN];
+ char *posn = command;
+ int size = MAX_CMD_LEN;
+ int of = 0;
+
+ of |= add_to_string(&posn, &size, prog, 0);
+ of |= add_to_string(&posn, &size, " ", 0);
+ of |= add_to_string(&posn, &size, path, 1);
+
+ if (of)
+ die("command line too long");
+
dup2(pipefd[1][0], 0);
dup2(pipefd[0][1], 1);
close(pipefd[0][0]);
int finish_connect(pid_t pid)
{
+ if (pid == 0)
+ return 0;
+
while (waitpid(pid, NULL, 0) < 0) {
if (errno != EINTR)
return -1;