#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>
+#include "run-command.h"
+#include "remote.h"
static char *server_capabilities;
continue;
if (nr_match && !path_match(name, nr_match, match))
continue;
- ref = xcalloc(1, sizeof(*ref) + len - 40);
+ ref = alloc_ref(len - 40);
hashcpy(ref->old_sha1, old_sha1);
memcpy(ref->name, buffer + 41, len - 40);
*list = ref;
line[--len] = 0;
if (!strcmp(line, "NAK"))
return 0;
- if (!strncmp(line, "ACK ", 4)) {
+ if (!prefixcmp(line, "ACK ")) {
if (!get_sha1_hex(line+4, result_sha1)) {
if (strstr(line+45, "continue"))
return 2;
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 patlen = strlen(pattern);
- struct ref *matched_weak = NULL;
- struct ref *matched = NULL;
- int weak_match = 0;
- int match = 0;
-
- 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;
-
- /* 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;
- }
-}
-
-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);
- hashcpy(ref->new_sha1, sha1);
- 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);
- hashcpy(dst_peer->new_sha1, src->new_sha1);
- 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, "ssh+git"))
return PROTO_SSH;
+ if (!strcmp(name, "file"))
+ return PROTO_LOCAL;
die("I don't handle protocol '%s'", name);
}
#ifndef NO_IPV6
+static const char *ai_name(const struct addrinfo *ai)
+{
+ static char addr[INET_ADDRSTRLEN];
+ if ( AF_INET == ai->ai_family ) {
+ struct sockaddr_in *in;
+ in = (struct sockaddr_in *)ai->ai_addr;
+ inet_ntop(ai->ai_family, &in->sin_addr, addr, sizeof(addr));
+ } else if ( AF_INET6 == ai->ai_family ) {
+ struct sockaddr_in6 *in;
+ in = (struct sockaddr_in6 *)ai->ai_addr;
+ inet_ntop(ai->ai_family, &in->sin6_addr, addr, sizeof(addr));
+ } else {
+ strcpy(addr, "(unknown)");
+ }
+ return addr;
+}
+
/*
* Returns a connected socket() fd, or else die()s.
*/
-static int git_tcp_connect_sock(char *host)
+static int git_tcp_connect_sock(char *host, int flags)
{
int sockfd = -1, saved_errno = 0;
char *colon, *end;
const char *port = STR(DEFAULT_GIT_PORT);
struct addrinfo hints, *ai0, *ai;
int gai;
+ int cnt = 0;
if (host[0] == '[') {
end = strchr(host + 1, ']');
if (colon) {
*colon = 0;
port = colon + 1;
+ if (!*port)
+ port = "<none>";
}
memset(&hints, 0, sizeof(hints));
hints.ai_socktype = SOCK_STREAM;
hints.ai_protocol = IPPROTO_TCP;
+ if (flags & CONNECT_VERBOSE)
+ fprintf(stderr, "Looking up %s ... ", host);
+
gai = getaddrinfo(host, port, &hints, &ai);
if (gai)
- die("Unable to look up %s (%s)", host, gai_strerror(gai));
+ die("Unable to look up %s (port %s) (%s)", host, port, gai_strerror(gai));
+
+ if (flags & CONNECT_VERBOSE)
+ fprintf(stderr, "done.\nConnecting to %s (port %s) ... ", host, port);
for (ai0 = ai; ai; ai = ai->ai_next) {
sockfd = socket(ai->ai_family,
}
if (connect(sockfd, ai->ai_addr, ai->ai_addrlen) < 0) {
saved_errno = errno;
+ fprintf(stderr, "%s[%d: %s]: errno=%s\n",
+ host,
+ cnt,
+ ai_name(ai),
+ strerror(saved_errno));
close(sockfd);
sockfd = -1;
continue;
}
+ if (flags & CONNECT_VERBOSE)
+ fprintf(stderr, "%s ", ai_name(ai));
break;
}
if (sockfd < 0)
die("unable to connect a socket (%s)", strerror(saved_errno));
+ if (flags & CONNECT_VERBOSE)
+ fprintf(stderr, "done.\n");
+
return sockfd;
}
/*
* Returns a connected socket() fd, or else die()s.
*/
-static int git_tcp_connect_sock(char *host)
+static int git_tcp_connect_sock(char *host, int flags)
{
int sockfd = -1, saved_errno = 0;
char *colon, *end;
struct sockaddr_in sa;
char **ap;
unsigned int nport;
+ int cnt;
if (host[0] == '[') {
end = strchr(host + 1, ']');
port = colon + 1;
}
+ if (flags & CONNECT_VERBOSE)
+ fprintf(stderr, "Looking up %s ... ", host);
+
he = gethostbyname(host);
if (!he)
die("Unable to look up %s (%s)", host, hstrerror(h_errno));
nport = se->s_port;
}
- for (ap = he->h_addr_list; *ap; ap++) {
+ if (flags & CONNECT_VERBOSE)
+ fprintf(stderr, "done.\nConnecting to %s (port %s) ... ", host, port);
+
+ for (cnt = 0, ap = he->h_addr_list; *ap; ap++, cnt++) {
sockfd = socket(he->h_addrtype, SOCK_STREAM, 0);
if (sockfd < 0) {
saved_errno = errno;
if (connect(sockfd, (struct sockaddr *)&sa, sizeof sa) < 0) {
saved_errno = errno;
+ fprintf(stderr, "%s[%d: %s]: errno=%s\n",
+ host,
+ cnt,
+ inet_ntoa(*(struct in_addr *)&sa.sin_addr),
+ strerror(saved_errno));
close(sockfd);
sockfd = -1;
continue;
}
+ if (flags & CONNECT_VERBOSE)
+ fprintf(stderr, "%s ",
+ inet_ntoa(*(struct in_addr *)&sa.sin_addr));
break;
}
if (sockfd < 0)
die("unable to connect a socket (%s)", strerror(saved_errno));
+ if (flags & CONNECT_VERBOSE)
+ fprintf(stderr, "done.\n");
+
return sockfd;
}
#endif /* NO_IPV6 */
-static void git_tcp_connect(int fd[2], char *host)
+static void git_tcp_connect(int fd[2], char *host, int flags)
{
- int sockfd = git_tcp_connect_sock(host);
+ int sockfd = git_tcp_connect_sock(host, flags);
fd[0] = sockfd;
- fd[1] = sockfd;
+ fd[1] = dup(sockfd);
}
}
if (0 <= matchlen) {
/* core.gitproxy = none for kernel.org */
- if (matchlen == 4 &&
+ if (matchlen == 4 &&
!memcmp(value, "none", 4))
matchlen = 0;
git_proxy_command = xmalloc(matchlen + 1);
{
const char *port = STR(DEFAULT_GIT_PORT);
char *colon, *end;
- int pipefd[2][2];
- pid_t pid;
+ const char *argv[4];
+ struct child_process proxy;
if (host[0] == '[') {
end = strchr(host + 1, ']');
port = colon + 1;
}
- if (pipe(pipefd[0]) < 0 || pipe(pipefd[1]) < 0)
- die("unable to create pipe pair for communication");
- pid = fork();
- if (!pid) {
- 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]);
- execlp(git_proxy_command, git_proxy_command, host, port, NULL);
- die("exec failed");
- }
- if (pid < 0)
- die("fork failed");
- fd[0] = pipefd[0][0];
- fd[1] = pipefd[1][1];
- close(pipefd[0][1]);
- close(pipefd[1][0]);
+ argv[0] = git_proxy_command;
+ argv[1] = host;
+ argv[2] = port;
+ argv[3] = NULL;
+ memset(&proxy, 0, sizeof(proxy));
+ proxy.argv = argv;
+ proxy.in = -1;
+ proxy.out = -1;
+ if (start_command(&proxy))
+ die("cannot start proxy %s", argv[0]);
+ fd[0] = proxy.out; /* read from proxy stdout */
+ fd[1] = proxy.in; /* write to proxy stdin */
}
#define MAX_CMD_LEN 1024
+char *get_port(char *host)
+{
+ char *end;
+ char *p = strchr(host, ':');
+
+ if (p) {
+ strtol(p+1, &end, 10);
+ if (*end == '\0') {
+ *p = '\0';
+ return p+1;
+ }
+ }
+
+ return NULL;
+}
+
/*
* This returns 0 if the transport protocol does not need fork(2),
* or a process id if it does. Once done, finish the connection
*
* Does not return a negative value on error; it just dies.
*/
-pid_t git_connect(int fd[2], char *url, const char *prog)
+pid_t git_connect(int fd[2], char *url, const char *prog, int flags)
{
char *host, *path = url;
char *end;
pid_t pid;
enum protocol protocol = PROTO_LOCAL;
int free_path = 0;
+ char *port = NULL;
/* Without this we cannot rely on waitpid() to tell
* what happened to our children.
end = host;
path = strchr(end, c);
- if (c == ':') {
- if (path) {
+ if (path) {
+ if (c == ':') {
protocol = PROTO_SSH;
*path++ = '\0';
- } else
- path = host;
- }
+ }
+ } else
+ path = end;
if (!path || !*path)
die("No path specified. See 'man git-pull' for valid url syntax");
*ptr = '\0';
}
+ /*
+ * Add support for ssh port: ssh://host.xy:<port>/...
+ */
+ if (protocol == PROTO_SSH && host != url)
+ port = get_port(host);
+
if (protocol == PROTO_GIT) {
/* These underlying connection commands die() if they
* cannot connect.
if (git_use_proxy(host))
git_proxy_connect(fd, host);
else
- git_tcp_connect(fd, host);
+ git_tcp_connect(fd, host, flags);
/*
* Separate original protocol components prog and path
* from extended components with a NUL byte.
ssh_basename = ssh;
else
ssh_basename++;
- execlp(ssh, ssh_basename, host, command, NULL);
+
+ if (!port)
+ execlp(ssh, ssh_basename, host, command, NULL);
+ else
+ execlp(ssh, ssh_basename, "-p", port, host,
+ command, NULL);
}
else {
unsetenv(ALTERNATE_DB_ENVIRONMENT);
unsetenv(DB_ENVIRONMENT);
unsetenv(GIT_DIR_ENVIRONMENT);
+ unsetenv(GIT_WORK_TREE_ENVIRONMENT);
unsetenv(GRAFT_ENVIRONMENT);
unsetenv(INDEX_ENVIRONMENT);
execlp("sh", "sh", "-c", command, NULL);