5 #include <sys/socket.h>
6 #include <netinet/in.h>
11 * Read all the refs from the other end
13 struct ref **get_remote_heads(int in, struct ref **list, int nr_match, char **match)
18 unsigned char old_sha1[20];
19 static char buffer[1000];
23 len = packet_read_line(in, buffer, sizeof(buffer));
26 if (buffer[len-1] == '\n')
29 if (len < 42 || get_sha1_hex(buffer, old_sha1) || buffer[40] != ' ')
30 die("protocol error: expected sha/ref, got '%s'", buffer);
32 if (nr_match && !path_match(name, nr_match, match))
34 ref = xmalloc(sizeof(*ref) + len - 40);
35 memcpy(ref->old_sha1, old_sha1, 20);
36 memset(ref->new_sha1, 0, 20);
37 memcpy(ref->name, buffer + 41, len - 40);
45 int get_ack(int fd, unsigned char *result_sha1)
47 static char line[1000];
48 int len = packet_read_line(fd, line, sizeof(line));
51 die("git-fetch-pack: expected ACK/NAK, got EOF");
52 if (line[len-1] == '\n')
54 if (!strcmp(line, "NAK"))
56 if (!strncmp(line, "ACK ", 3)) {
57 if (!get_sha1_hex(line+4, result_sha1))
60 die("git-fetch_pack: expected ACK/NAK, got '%s'", line);
63 int path_match(const char *path, int nr, char **match)
66 int pathlen = strlen(path);
68 for (i = 0; i < nr; i++) {
72 if (!len || len > pathlen)
74 if (memcmp(path + pathlen - len, s, len))
76 if (pathlen > len && path[pathlen - len - 1] != '/')
90 static enum protocol get_protocol(const char *name)
92 if (!strcmp(name, "ssh"))
94 if (!strcmp(name, "git"))
96 die("I don't handle protocol '%s'", name);
99 static void lookup_host(const char *host, struct sockaddr *in)
101 struct addrinfo *res;
104 ret = getaddrinfo(host, NULL, NULL, &res);
106 die("Unable to look up %s (%s)", host, gai_strerror(ret));
111 static int git_tcp_connect(int fd[2], const char *prog, char *host, char *path)
113 struct sockaddr addr;
114 int port = DEFAULT_GIT_PORT, sockfd;
117 colon = strchr(host, ':');
120 unsigned long n = strtoul(colon+1, &end, 0);
121 if (colon[1] && !*end) {
127 lookup_host(host, &addr);
128 ((struct sockaddr_in *)&addr)->sin_port = htons(port);
130 sockfd = socket(PF_INET, SOCK_STREAM, IPPROTO_IP);
132 die("unable to create socket (%s)", strerror(errno));
133 if (connect(sockfd, (void *)&addr, sizeof(addr)) < 0)
134 die("unable to connect (%s)", strerror(errno));
137 packet_write(sockfd, "%s %s\n", prog, path);
142 * Yeah, yeah, fixme. Need to pass in the heads etc.
144 int git_connect(int fd[2], char *url, const char *prog)
151 enum protocol protocol;
155 colon = strchr(url, ':');
156 protocol = PROTO_LOCAL;
161 protocol = PROTO_SSH;
162 if (!memcmp(path, "//", 2)) {
163 char *slash = strchr(path + 2, '/');
165 int nr = slash - path - 2;
166 memmove(path, path+2, nr);
168 protocol = get_protocol(url);
175 if (protocol == PROTO_GIT)
176 return git_tcp_connect(fd, prog, host, path);
178 if (pipe(pipefd[0]) < 0 || pipe(pipefd[1]) < 0)
179 die("unable to create pipe pair for communication");
182 snprintf(command, sizeof(command), "%s %s", prog,
184 dup2(pipefd[1][0], 0);
185 dup2(pipefd[0][1], 1);
190 if (protocol == PROTO_SSH)
191 execlp("ssh", "ssh", host, command, NULL);
193 execlp("sh", "sh", "-c", command, NULL);
196 fd[0] = pipefd[0][0];
197 fd[1] = pipefd[1][1];
203 int finish_connect(pid_t pid)
208 ret = waitpid(pid, NULL, 0);