summaryrefslogtreecommitdiff
path: root/connect.c
diff options
context:
space:
mode:
Diffstat (limited to 'connect.c')
-rw-r--r--connect.c210
1 files changed, 158 insertions, 52 deletions
diff --git a/connect.c b/connect.c
index 27a706f766..c72b1d1151 100644
--- a/connect.c
+++ b/connect.c
@@ -43,14 +43,14 @@ int check_ref_type(const struct ref *ref, int flags)
return check_ref(ref->name, flags);
}
-static void die_initial_contact(int got_at_least_one_head)
+static void die_initial_contact(int unexpected)
{
- if (got_at_least_one_head)
- die("The remote end hung up upon initial contact");
+ if (unexpected)
+ die(_("The remote end hung up upon initial contact"));
else
- die("Could not read from remote repository.\n\n"
- "Please make sure you have the correct access rights\n"
- "and the repository exists.");
+ die(_("Could not read from remote repository.\n\n"
+ "Please make sure you have the correct access rights\n"
+ "and the repository exists."));
}
static void parse_one_symref_info(struct string_list *symref, const char *val, int len)
@@ -71,7 +71,7 @@ static void parse_one_symref_info(struct string_list *symref, const char *val, i
check_refname_format(target, REFNAME_ALLOW_ONELEVEL))
/* "symref=bogus:pair */
goto reject;
- item = string_list_append(symref, sym);
+ item = string_list_append_nodup(symref, sym);
item->util = target;
return;
reject:
@@ -111,16 +111,24 @@ static void annotate_refs_with_symref_info(struct ref *ref)
*/
struct ref **get_remote_heads(int in, char *src_buf, size_t src_len,
struct ref **list, unsigned int flags,
- struct sha1_array *extra_have,
- struct sha1_array *shallow_points)
+ struct oid_array *extra_have,
+ struct oid_array *shallow_points)
{
struct ref **orig_list = list;
- int got_at_least_one_head = 0;
+
+ /*
+ * A hang-up after seeing some response from the other end
+ * means that it is unexpected, as we know the other end is
+ * willing to talk to us. A hang-up before seeing any
+ * response does not necessarily mean an ACL problem, though.
+ */
+ int saw_response;
+ int got_dummy_ref_with_capabilities_declaration = 0;
*list = NULL;
- for (;;) {
+ for (saw_response = 0; ; saw_response = 1) {
struct ref *ref;
- unsigned char old_sha1[20];
+ struct object_id old_oid;
char *name;
int len, name_len;
char *buffer = packet_buffer;
@@ -131,7 +139,7 @@ struct ref **get_remote_heads(int in, char *src_buf, size_t src_len,
PACKET_READ_GENTLE_ON_EOF |
PACKET_READ_CHOMP_NEWLINE);
if (len < 0)
- die_initial_contact(got_at_least_one_head);
+ die_initial_contact(saw_response);
if (!len)
break;
@@ -139,37 +147,51 @@ struct ref **get_remote_heads(int in, char *src_buf, size_t src_len,
if (len > 4 && skip_prefix(buffer, "ERR ", &arg))
die("remote error: %s", arg);
- if (len == 48 && skip_prefix(buffer, "shallow ", &arg)) {
- if (get_sha1_hex(arg, old_sha1))
+ if (len == GIT_SHA1_HEXSZ + strlen("shallow ") &&
+ skip_prefix(buffer, "shallow ", &arg)) {
+ if (get_oid_hex(arg, &old_oid))
die("protocol error: expected shallow sha-1, got '%s'", arg);
if (!shallow_points)
die("repository on the other end cannot be shallow");
- sha1_array_append(shallow_points, old_sha1);
+ oid_array_append(shallow_points, &old_oid);
continue;
}
- if (len < 42 || get_sha1_hex(buffer, old_sha1) || buffer[40] != ' ')
+ if (len < GIT_SHA1_HEXSZ + 2 || get_oid_hex(buffer, &old_oid) ||
+ buffer[GIT_SHA1_HEXSZ] != ' ')
die("protocol error: expected sha/ref, got '%s'", buffer);
- name = buffer + 41;
+ name = buffer + GIT_SHA1_HEXSZ + 1;
name_len = strlen(name);
- if (len != name_len + 41) {
+ if (len != name_len + GIT_SHA1_HEXSZ + 1) {
free(server_capabilities);
server_capabilities = xstrdup(name + name_len + 1);
}
if (extra_have && !strcmp(name, ".have")) {
- sha1_array_append(extra_have, old_sha1);
+ oid_array_append(extra_have, &old_oid);
+ continue;
+ }
+
+ if (!strcmp(name, "capabilities^{}")) {
+ if (saw_response)
+ die("protocol error: unexpected capabilities^{}");
+ if (got_dummy_ref_with_capabilities_declaration)
+ die("protocol error: multiple capabilities^{}");
+ got_dummy_ref_with_capabilities_declaration = 1;
continue;
}
if (!check_ref(name, flags))
continue;
- ref = alloc_ref(buffer + 41);
- hashcpy(ref->old_sha1, old_sha1);
+
+ if (got_dummy_ref_with_capabilities_declaration)
+ die("protocol error: unexpected ref after capabilities^{}");
+
+ ref = alloc_ref(buffer + GIT_SHA1_HEXSZ + 1);
+ oidcpy(&ref->old_oid, &old_oid);
*list = ref;
list = &ref->next;
- got_at_least_one_head = 1;
}
annotate_refs_with_symref_info(*orig_list);
@@ -255,7 +277,7 @@ static const char *prot_name(enum protocol protocol)
case PROTO_GIT:
return "git";
default:
- return "unkown protocol";
+ return "unknown protocol";
}
}
@@ -265,9 +287,9 @@ static enum protocol get_protocol(const char *name)
return PROTO_SSH;
if (!strcmp(name, "git"))
return PROTO_GIT;
- if (!strcmp(name, "git+ssh"))
+ if (!strcmp(name, "git+ssh")) /* deprecated - do not use */
return PROTO_SSH;
- if (!strcmp(name, "ssh+git"))
+ if (!strcmp(name, "ssh+git")) /* deprecated - do not use */
return PROTO_SSH;
if (!strcmp(name, "file"))
return PROTO_FILE;
@@ -333,7 +355,7 @@ static const char *ai_name(const struct addrinfo *ai)
static char addr[NI_MAXHOST];
if (getnameinfo(ai->ai_addr, ai->ai_addrlen, addr, sizeof(addr), NULL, 0,
NI_NUMERICHOST) != 0)
- strcpy(addr, "(unknown)");
+ xsnprintf(addr, sizeof(addr), "(unknown)");
return addr;
}
@@ -355,6 +377,10 @@ static int git_tcp_connect_sock(char *host, int flags)
port = "<none>";
memset(&hints, 0, sizeof(hints));
+ if (flags & CONNECT_IPV4)
+ hints.ai_family = AF_INET;
+ else if (flags & CONNECT_IPV6)
+ hints.ai_family = AF_INET6;
hints.ai_socktype = SOCK_STREAM;
hints.ai_protocol = IPPROTO_TCP;
@@ -652,6 +678,83 @@ static enum protocol parse_connect_url(const char *url_orig, char **ret_host,
static struct child_process no_fork = CHILD_PROCESS_INIT;
+static const char *get_ssh_command(void)
+{
+ const char *ssh;
+
+ if ((ssh = getenv("GIT_SSH_COMMAND")))
+ return ssh;
+
+ if (!git_config_get_string_const("core.sshcommand", &ssh))
+ return ssh;
+
+ return NULL;
+}
+
+static int override_ssh_variant(int *port_option, int *needs_batch)
+{
+ char *variant;
+
+ variant = xstrdup_or_null(getenv("GIT_SSH_VARIANT"));
+ if (!variant &&
+ git_config_get_string("ssh.variant", &variant))
+ return 0;
+
+ if (!strcmp(variant, "plink") || !strcmp(variant, "putty")) {
+ *port_option = 'P';
+ *needs_batch = 0;
+ } else if (!strcmp(variant, "tortoiseplink")) {
+ *port_option = 'P';
+ *needs_batch = 1;
+ } else {
+ *port_option = 'p';
+ *needs_batch = 0;
+ }
+ free(variant);
+ return 1;
+}
+
+static void handle_ssh_variant(const char *ssh_command, int is_cmdline,
+ int *port_option, int *needs_batch)
+{
+ const char *variant;
+ char *p = NULL;
+
+ if (override_ssh_variant(port_option, needs_batch))
+ return;
+
+ if (!is_cmdline) {
+ p = xstrdup(ssh_command);
+ variant = basename(p);
+ } else {
+ const char **ssh_argv;
+
+ p = xstrdup(ssh_command);
+ if (split_cmdline(p, &ssh_argv) > 0) {
+ variant = basename((char *)ssh_argv[0]);
+ /*
+ * At this point, variant points into the buffer
+ * referenced by p, hence we do not need ssh_argv
+ * any longer.
+ */
+ free(ssh_argv);
+ } else {
+ free(p);
+ return;
+ }
+ }
+
+ if (!strcasecmp(variant, "plink") ||
+ !strcasecmp(variant, "plink.exe"))
+ *port_option = 'P';
+ else if (!strcasecmp(variant, "tortoiseplink") ||
+ !strcasecmp(variant, "tortoiseplink.exe")) {
+ *port_option = 'P';
+ *needs_batch = 1;
+ }
+ free(p);
+}
+
/*
* This returns a dummy child_process if the transport protocol does not
* need fork(2), or a struct child_process object if it does. Once done,
@@ -711,7 +814,7 @@ struct child_process *git_connect(int fd[2], const char *url,
* Note: Do not add any other headers here! Doing so
* will cause older git-daemon servers to crash.
*/
- packet_write(fd[1],
+ packet_write_fmt(fd[1],
"%s %s%chost=%s%c",
prog, path, 0,
target_host, 0);
@@ -724,10 +827,14 @@ struct child_process *git_connect(int fd[2], const char *url,
strbuf_addch(&cmd, ' ');
sq_quote_buf(&cmd, path);
+ /* remove repo-local variables from the environment */
+ conn->env = local_repo_env;
+ conn->use_shell = 1;
conn->in = conn->out = -1;
if (protocol == PROTO_SSH) {
const char *ssh;
- int putty, tortoiseplink = 0;
+ int needs_batch = 0;
+ int port_option = 'p';
char *ssh_host = hostandport;
const char *port = NULL;
transport_check_allowed("ssh");
@@ -749,42 +856,41 @@ struct child_process *git_connect(int fd[2], const char *url,
return NULL;
}
- ssh = getenv("GIT_SSH_COMMAND");
- if (ssh) {
- conn->use_shell = 1;
- putty = 0;
- } else {
- const char *base;
- char *ssh_dup;
+ ssh = get_ssh_command();
+ if (ssh)
+ handle_ssh_variant(ssh, 1, &port_option,
+ &needs_batch);
+ else {
+ /*
+ * GIT_SSH is the no-shell version of
+ * GIT_SSH_COMMAND (and must remain so for
+ * historical compatibility).
+ */
+ conn->use_shell = 0;
ssh = getenv("GIT_SSH");
if (!ssh)
ssh = "ssh";
-
- ssh_dup = xstrdup(ssh);
- base = basename(ssh_dup);
-
- tortoiseplink = !strcasecmp(base, "tortoiseplink") ||
- !strcasecmp(base, "tortoiseplink.exe");
- putty = !strcasecmp(base, "plink") ||
- !strcasecmp(base, "plink.exe") || tortoiseplink;
-
- free(ssh_dup);
+ else
+ handle_ssh_variant(ssh, 0,
+ &port_option,
+ &needs_batch);
}
argv_array_push(&conn->args, ssh);
- if (tortoiseplink)
+ if (flags & CONNECT_IPV4)
+ argv_array_push(&conn->args, "-4");
+ else if (flags & CONNECT_IPV6)
+ argv_array_push(&conn->args, "-6");
+ if (needs_batch)
argv_array_push(&conn->args, "-batch");
if (port) {
- /* P is for PuTTY, p is for OpenSSH */
- argv_array_push(&conn->args, putty ? "-P" : "-p");
+ argv_array_pushf(&conn->args,
+ "-%c", port_option);
argv_array_push(&conn->args, port);
}
argv_array_push(&conn->args, ssh_host);
} else {
- /* remove repo-local variables from the environment */
- conn->env = local_repo_env;
- conn->use_shell = 1;
transport_check_allowed("file");
}
argv_array_push(&conn->args, cmd.buf);
generated by cgit v1.2.3 (git 2.25.1) at 2024-09-28 15:36:29 +0000