]> git.ipfire.org Git - thirdparty/git.git/blobdiff - connect.c
is_ntfs_dotgit(): only verify the leading segment
[thirdparty/git.git] / connect.c
index 048fa049170c8f6912ac96b7b547f2f28a74995e..49b28b83be2717027ac33570b1041604db5a062d 100644 (file)
--- a/connect.c
+++ b/connect.c
@@ -1,5 +1,6 @@
 #include "git-compat-util.h"
 #include "cache.h"
+#include "config.h"
 #include "pkt-line.h"
 #include "quote.h"
 #include "refs.h"
@@ -43,14 +44,14 @@ 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 +72,7 @@ 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:
@@ -111,14 +112,22 @@ 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;
                struct object_id old_oid;
                char *name;
@@ -131,7 +140,7 @@ 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;
@@ -145,7 +154,7 @@ struct ref **get_remote_heads(int in, char *src_buf, size_t src_len,
                                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_oid.hash);
+                       oid_array_append(shallow_points, &old_oid);
                        continue;
                }
 
@@ -161,17 +170,29 @@ struct ref **get_remote_heads(int in, char *src_buf, size_t src_len,
                }
 
                if (extra_have && !strcmp(name, ".have")) {
-                       sha1_array_append(extra_have, old_oid.hash);
+                       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;
+
+               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);
@@ -676,6 +697,70 @@ static const char *get_ssh_command(void)
        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,
@@ -735,7 +820,7 @@ 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);
@@ -757,7 +842,8 @@ struct child_process *git_connect(int fd[2], const char *url,
                conn->in = conn->out = -1;
                if (protocol == PROTO_SSH) {
                        const char *ssh;
-                       int putty = 0, tortoiseplink = 0;
+                       int needs_batch = 0;
+                       int port_option = 'p';
                        char *ssh_host = hostandport;
                        const char *port = NULL;
                        transport_check_allowed("ssh");
@@ -783,10 +869,10 @@ struct child_process *git_connect(int fd[2], const char *url,
                                die("strange hostname '%s' blocked", ssh_host);
 
                        ssh = get_ssh_command();
-                       if (!ssh) {
-                               const char *base;
-                               char *ssh_dup;
-
+                       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
@@ -797,17 +883,10 @@ struct child_process *git_connect(int fd[2], const char *url,
                                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 = tortoiseplink ||
-                                       !strcasecmp(base, "plink") ||
-                                       !strcasecmp(base, "plink.exe");
-
-                               free(ssh_dup);
+                               else
+                                       handle_ssh_variant(ssh, 0,
+                                                          &port_option,
+                                                          &needs_batch);
                        }
 
                        argv_array_push(&conn->args, ssh);
@@ -815,11 +894,11 @@ struct child_process *git_connect(int fd[2], const char *url,
                                argv_array_push(&conn->args, "-4");
                        else if (flags & CONNECT_IPV6)
                                argv_array_push(&conn->args, "-6");
-                       if (tortoiseplink)
+                       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);