#include "cache.h"
#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>
+static char *server_capabilities = NULL;
+
/*
* Read all the refs from the other end
*/
-struct ref **get_remote_heads(int in, struct ref **list, int nr_match, char **match)
+struct ref **get_remote_heads(int in, struct ref **list,
+ int nr_match, char **match, int ignore_funny)
{
*list = NULL;
for (;;) {
unsigned char old_sha1[20];
static char buffer[1000];
char *name;
- int len;
+ int len, name_len;
len = packet_read_line(in, buffer, sizeof(buffer));
if (!len)
if (len < 42 || get_sha1_hex(buffer, old_sha1) || buffer[40] != ' ')
die("protocol error: expected sha/ref, got '%s'", buffer);
name = buffer + 41;
+
+ if (ignore_funny && 45 < len && !memcmp(name, "refs/", 5) &&
+ check_ref_format(name + 5))
+ continue;
+
+ name_len = strlen(name);
+ if (len != name_len + 41) {
+ if (server_capabilities)
+ free(server_capabilities);
+ server_capabilities = strdup(name + name_len + 1);
+ }
+
if (nr_match && !path_match(name, nr_match, match))
continue;
- ref = xmalloc(sizeof(*ref) + len - 40);
+ ref = xcalloc(1, sizeof(*ref) + len - 40);
memcpy(ref->old_sha1, old_sha1, 20);
- memset(ref->new_sha1, 0, 20);
memcpy(ref->name, buffer + 41, len - 40);
- ref->next = NULL;
*list = ref;
list = &ref->next;
}
return list;
}
+int server_supports(const char *feature)
+{
+ return server_capabilities &&
+ strstr(server_capabilities, feature) != NULL;
+}
+
int get_ack(int fd, unsigned char *result_sha1)
{
static char line[1000];
if (!strcmp(line, "NAK"))
return 0;
if (!strncmp(line, "ACK ", 3)) {
- if (!get_sha1_hex(line+4, result_sha1))
+ if (!get_sha1_hex(line+4, result_sha1)) {
+ if (strstr(line+45, "continue"))
+ return 2;
return 1;
+ }
}
die("git-fetch_pack: expected ACK/NAK, got '%s'", line);
}
return 0;
}
+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 = 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;
+ *ep = 0;
+ }
+ else
+ dp = sp;
+ rs[i].src = sp;
+ rs[i].dst = dp;
+ }
+ rs[nr_refspec].src = rs[nr_refspec].dst = NULL;
+ return rs;
+}
+
+static int count_refspec_match(const char *pattern,
+ struct ref *refs,
+ struct ref **matched_ref)
+{
+ int match;
+ int patlen = strlen(pattern);
+
+ for (match = 0; refs; refs = refs->next) {
+ char *name = refs->name;
+ int namelen = strlen(name);
+ if (namelen < patlen ||
+ memcmp(name + namelen - patlen, pattern, patlen))
+ continue;
+ if (namelen != patlen && name[namelen - patlen - 1] != '/')
+ continue;
+ match++;
+ *matched_ref = refs;
+ }
+ return match;
+}
+
+static void link_dst_tail(struct ref *ref, struct ref ***tail)
+{
+ **tail = ref;
+ *tail = &ref->next;
+ **tail = NULL;
+}
+
+static struct ref *try_explicit_object_name(const char *name)
+{
+ unsigned char sha1[20];
+ struct ref *ref;
+ int len;
+ if (get_sha1(name, sha1))
+ return NULL;
+ len = strlen(name) + 1;
+ ref = xcalloc(1, sizeof(*ref) + len);
+ memcpy(ref->name, name, len);
+ memcpy(ref->new_sha1, sha1, 20);
+ return ref;
+}
+
+static int match_explicit_refs(struct ref *src, struct ref *dst,
+ struct ref ***dst_tail, struct refspec *rs)
+{
+ int i, errs;
+ for (i = errs = 0; rs[i].src; i++) {
+ struct ref *matched_src, *matched_dst;
+
+ matched_src = matched_dst = NULL;
+ switch (count_refspec_match(rs[i].src, src, &matched_src)) {
+ case 1:
+ break;
+ case 0:
+ /* The source could be in the get_sha1() format
+ * not a reference name.
+ */
+ matched_src = try_explicit_object_name(rs[i].src);
+ if (matched_src)
+ break;
+ errs = 1;
+ error("src refspec %s does not match any.",
+ rs[i].src);
+ break;
+ default:
+ errs = 1;
+ error("src refspec %s matches more than one.",
+ rs[i].src);
+ break;
+ }
+ switch (count_refspec_match(rs[i].dst, dst, &matched_dst)) {
+ case 1:
+ break;
+ case 0:
+ if (!memcmp(rs[i].dst, "refs/", 5)) {
+ int len = strlen(rs[i].dst) + 1;
+ matched_dst = xcalloc(1, sizeof(*dst) + len);
+ memcpy(matched_dst->name, rs[i].dst, len);
+ link_dst_tail(matched_dst, dst_tail);
+ }
+ else if (!strcmp(rs[i].src, rs[i].dst) &&
+ matched_src) {
+ /* pushing "master:master" when
+ * remote does not have master yet.
+ */
+ int len = strlen(matched_src->name) + 1;
+ matched_dst = xcalloc(1, sizeof(*dst) + len);
+ memcpy(matched_dst->name, matched_src->name,
+ len);
+ link_dst_tail(matched_dst, dst_tail);
+ }
+ else {
+ errs = 1;
+ error("dst refspec %s does not match any "
+ "existing ref on the remote and does "
+ "not start with refs/.", rs[i].dst);
+ }
+ break;
+ default:
+ errs = 1;
+ error("dst refspec %s matches more than one.",
+ rs[i].dst);
+ break;
+ }
+ if (errs)
+ continue;
+ if (matched_dst->peer_ref) {
+ errs = 1;
+ error("dst ref %s receives from more than one src.",
+ matched_dst->name);
+ }
+ else {
+ matched_dst->peer_ref = matched_src;
+ matched_dst->force = rs[i].force;
+ }
+ }
+ return -errs;
+}
+
+static struct ref *find_ref_by_name(struct ref *list, const char *name)
+{
+ for ( ; list; list = list->next)
+ if (!strcmp(list->name, name))
+ return list;
+ return NULL;
+}
+
+int match_refs(struct ref *src, struct ref *dst, struct ref ***dst_tail,
+ int nr_refspec, char **refspec, int all)
+{
+ struct refspec *rs = parse_ref_spec(nr_refspec, refspec);
+
+ if (nr_refspec)
+ return match_explicit_refs(src, dst, dst_tail, rs);
+
+ /* pick the remainder */
+ for ( ; src; src = src->next) {
+ struct ref *dst_peer;
+ if (src->peer_ref)
+ continue;
+ dst_peer = find_ref_by_name(dst, src->name);
+ if ((dst_peer && dst_peer->peer_ref) || (!dst_peer && !all))
+ continue;
+ if (!dst_peer) {
+ /* Create a new one and link it */
+ int len = strlen(src->name) + 1;
+ dst_peer = xcalloc(1, sizeof(*dst_peer) + len);
+ memcpy(dst_peer->name, src->name, len);
+ memcpy(dst_peer->new_sha1, src->new_sha1, 20);
+ link_dst_tail(dst_peer, dst_tail);
+ }
+ dst_peer->peer_ref = src;
+ }
+ return 0;
+}
+
enum protocol {
PROTO_LOCAL = 1,
PROTO_SSH,
return PROTO_SSH;
if (!strcmp(name, "git"))
return PROTO_GIT;
+ if (!strcmp(name, "git+ssh"))
+ return PROTO_SSH;
+ if (!strcmp(name, "ssh+git"))
+ return PROTO_SSH;
die("I don't handle protocol '%s'", 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;
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.
*/
close(pipefd[0][1]);
close(pipefd[1][0]);
close(pipefd[1][1]);
- if (protocol == PROTO_SSH)
- execlp("ssh", "ssh", host, command, NULL);
+ if (protocol == PROTO_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
+ ssh_basename++;
+ execlp(ssh, ssh_basename, host, command, NULL);
+ }
else
execlp("sh", "sh", "-c", command, NULL);
die("exec failed");
projects / git.git / blobdiff