Restore functionality to allow proxies to cache objects

[git.git] / connect.c

diff --git a/connect.c b/connect.c
index a6657b1..b157cf1 100644 (file)
--- a/connect.c
+++ b/connect.c
@@ -82,15 +82,26 @@ int path_match(const char *path, int nr, char **match)
 struct refspec {
        char *src;
        char *dst;
+       char force;
 };
 
+/*
+ * A:B means fast forward remote B with local A.
+ * +A:B means overwrite remote B with local A.
+ * +A is a shorthand for +A:A.
+ * A is a shorthand for A:A.
+ */
 static struct refspec *parse_ref_spec(int nr_refspec, char **refspec)
 {
        int i;
-       struct refspec *rs = xmalloc(sizeof(*rs) * (nr_refspec + 1));
+       struct refspec *rs = xcalloc(sizeof(*rs), (nr_refspec + 1));
        for (i = 0; i < nr_refspec; i++) {
                char *sp, *dp, *ep;
                sp = refspec[i];
+               if (*sp == '+') {
+                       rs[i].force = 1;
+                       sp++;
+               }
                ep = strchr(sp, ':');
                if (ep) {
                        dp = ep + 1;
@@ -216,8 +227,10 @@ static int match_explicit_refs(struct ref *src, struct ref *dst,
                        error("dst ref %s receives from more than one src.",
                              matched_dst->name);
                }
-               else
+               else {
                        matched_dst->peer_ref = matched_src;
+                       matched_dst->force = rs[i].force;
+               }
        }
        return -errs;
 }
@@ -277,6 +290,8 @@ static enum protocol get_protocol(const char *name)
 #define STR_(s)        # s
 #define STR(s) STR_(s)
 
+#ifndef NO_IPV6
+
 static int git_tcp_connect(int fd[2], const char *prog, char *host, char *path)
 {
        int sockfd = -1;
@@ -333,6 +348,77 @@ static int git_tcp_connect(int fd[2], const char *prog, char *host, char *path)
        return 0;
 }
 
+#else /* NO_IPV6 */
+
+static int git_tcp_connect(int fd[2], const char *prog, char *host, char *path)
+{
+       int sockfd = -1;
+       char *colon, *end;
+       char *port = STR(DEFAULT_GIT_PORT), *ep;
+       struct hostent *he;
+       struct sockaddr_in sa;
+       char **ap;
+       unsigned int nport;
+
+       if (host[0] == '[') {
+               end = strchr(host + 1, ']');
+               if (end) {
+                       *end = 0;
+                       end++;
+                       host++;
+               } else
+                       end = host;
+       } else
+               end = host;
+       colon = strchr(end, ':');
+
+       if (colon) {
+               *colon = 0;
+               port = colon + 1;
+       }
+
+
+       he = gethostbyname(host);
+       if (!he)
+               die("Unable to look up %s (%s)", host, hstrerror(h_errno));
+       nport = strtoul(port, &ep, 10);
+       if ( ep == port || *ep ) {
+               /* Not numeric */
+               struct servent *se = getservbyname(port,"tcp");
+               if ( !se )
+                       die("Unknown port %s\n", port);
+               nport = se->s_port;
+       }
+
+       for (ap = he->h_addr_list; *ap; ap++) {
+               sockfd = socket(he->h_addrtype, SOCK_STREAM, 0);
+               if (sockfd < 0)
+                       continue;
+
+               memset(&sa, 0, sizeof sa);
+               sa.sin_family = he->h_addrtype;
+               sa.sin_port = htons(nport);
+               memcpy(&sa.sin_addr, ap, he->h_length);
+
+               if (connect(sockfd, (struct sockaddr *)&sa, sizeof sa) < 0) {
+                       close(sockfd);
+                       sockfd = -1;
+                       continue;
+               }
+               break;
+       }
+
+       if (sockfd < 0)
+               die("unable to connect a socket (%s)", strerror(errno));
+
+       fd[0] = sockfd;
+       fd[1] = sockfd;
+       packet_write(sockfd, "%s %s\n", prog, path);
+       return 0;
+}
+
+#endif /* NO_IPV6 */
+
 /*
  * Yeah, yeah, fixme. Need to pass in the heads etc.
  */
@@ -383,8 +469,10 @@ int git_connect(int fd[2], char *url, const char *prog)
                close(pipefd[1][0]);
                close(pipefd[1][1]);
                if (protocol == PROTO_SSH) {
-                       const char *ssh = getenv("GIT_SSH") ? : "ssh";
-                       const char *ssh_basename = strrchr(ssh, '/');
+                       const char *ssh, *ssh_basename;
+                       ssh = getenv("GIT_SSH");
+                       if (!ssh) ssh = "ssh";
+                       ssh_basename = strrchr(ssh, '/');
                        if (!ssh_basename)
                                ssh_basename = ssh;
                        else