test/send-email: --[no-]xmailer tests
[gitweb.git] / transport-helper.c
index ad72fbd53cb7bfc7fc037d98288b0cc831ea949a..3d8fe7d801293a338f13dfd01ba352e84c658813 100644 (file)
@@ -58,7 +58,7 @@ static int recvline_fh(FILE *helper, struct strbuf *buffer, const char *name)
        if (strbuf_getline(buffer, helper, '\n') == EOF) {
                if (debug)
                        fprintf(stderr, "Debug: Remote helper quit.\n");
-               exit(128);
+               return 1;
        }
 
        if (debug)
@@ -71,12 +71,6 @@ static int recvline(struct helper_data *helper, struct strbuf *buffer)
        return recvline_fh(helper->out, buffer, helper->name);
 }
 
-static void xchgline(struct helper_data *helper, struct strbuf *buffer)
-{
-       sendline(helper, buffer);
-       recvline(helper, buffer);
-}
-
 static void write_constant(int fd, const char *str)
 {
        if (debug)
@@ -107,7 +101,6 @@ static void do_take_over(struct transport *transport)
 static struct child_process *get_helper(struct transport *transport)
 {
        struct helper_data *data = transport->data;
-       struct argv_array argv = ARGV_ARRAY_INIT;
        struct strbuf buf = STRBUF_INIT;
        struct child_process *helper;
        const char **refspecs = NULL;
@@ -129,10 +122,9 @@ static struct child_process *get_helper(struct transport *transport)
        helper->in = -1;
        helper->out = -1;
        helper->err = 0;
-       argv_array_pushf(&argv, "git-remote-%s", data->name);
-       argv_array_push(&argv, transport->remote->name);
-       argv_array_push(&argv, remove_ext_force(transport->url));
-       helper->argv = argv_array_detach(&argv, NULL);
+       argv_array_pushf(&helper->args, "git-remote-%s", data->name);
+       argv_array_push(&helper->args, transport->remote->name);
+       argv_array_push(&helper->args, remove_ext_force(transport->url));
        helper->git_cmd = 0;
        helper->silent_exec_failure = 1;
 
@@ -161,9 +153,10 @@ static struct child_process *get_helper(struct transport *transport)
        write_constant(helper->in, "capabilities\n");
 
        while (1) {
-               const char *capname;
+               const char *capname, *arg;
                int mandatory = 0;
-               recvline(data, &buf);
+               if (recvline(data, &buf))
+                       exit(128);
 
                if (!*buf.buf)
                        break;
@@ -190,25 +183,19 @@ static struct child_process *get_helper(struct transport *transport)
                        data->export = 1;
                else if (!strcmp(capname, "check-connectivity"))
                        data->check_connectivity = 1;
-               else if (!data->refspecs && starts_with(capname, "refspec ")) {
+               else if (!data->refspecs && skip_prefix(capname, "refspec ", &arg)) {
                        ALLOC_GROW(refspecs,
                                   refspec_nr + 1,
                                   refspec_alloc);
-                       refspecs[refspec_nr++] = xstrdup(capname + strlen("refspec "));
+                       refspecs[refspec_nr++] = xstrdup(arg);
                } else if (!strcmp(capname, "connect")) {
                        data->connect = 1;
                } else if (!strcmp(capname, "signed-tags")) {
                        data->signed_tags = 1;
-               } else if (starts_with(capname, "export-marks ")) {
-                       struct strbuf arg = STRBUF_INIT;
-                       strbuf_addstr(&arg, "--export-marks=");
-                       strbuf_addstr(&arg, capname + strlen("export-marks "));
-                       data->export_marks = strbuf_detach(&arg, NULL);
-               } else if (starts_with(capname, "import-marks")) {
-                       struct strbuf arg = STRBUF_INIT;
-                       strbuf_addstr(&arg, "--import-marks=");
-                       strbuf_addstr(&arg, capname + strlen("import-marks "));
-                       data->import_marks = strbuf_detach(&arg, NULL);
+               } else if (skip_prefix(capname, "export-marks ", &arg)) {
+                       data->export_marks = xstrdup(arg);
+               } else if (skip_prefix(capname, "import-marks ", &arg)) {
+                       data->import_marks = xstrdup(arg);
                } else if (starts_with(capname, "no-private-update")) {
                        data->no_private_update = 1;
                } else if (mandatory) {
@@ -256,7 +243,6 @@ static int disconnect_helper(struct transport *transport)
                close(data->helper->out);
                fclose(data->out);
                res = finish_command(data->helper);
-               argv_array_free_detached(data->helper->argv);
                free(data->helper);
                data->helper = NULL;
        }
@@ -307,7 +293,9 @@ static int set_helper_option(struct transport *transport,
                quote_c_style(value, &buf, NULL, 0);
        strbuf_addch(&buf, '\n');
 
-       xchgline(data, &buf);
+       sendline(data, &buf);
+       if (recvline(data, &buf))
+               exit(128);
 
        if (!strcmp(buf.buf, "ok"))
                ret = 0;
@@ -379,7 +367,8 @@ static int fetch_with_fetch(struct transport *transport,
        sendline(data, &buf);
 
        while (1) {
-               recvline(data, &buf);
+               if (recvline(data, &buf))
+                       exit(128);
 
                if (starts_with(buf.buf, "lock ")) {
                        const char *name = buf.buf + 5;
@@ -405,18 +394,16 @@ static int get_importer(struct transport *transport, struct child_process *fasti
 {
        struct child_process *helper = get_helper(transport);
        struct helper_data *data = transport->data;
-       struct argv_array argv = ARGV_ARRAY_INIT;
        int cat_blob_fd, code;
        memset(fastimport, 0, sizeof(*fastimport));
        fastimport->in = helper->out;
-       argv_array_push(&argv, "fast-import");
-       argv_array_push(&argv, debug ? "--stats" : "--quiet");
+       argv_array_push(&fastimport->args, "fast-import");
+       argv_array_push(&fastimport->args, debug ? "--stats" : "--quiet");
 
        if (data->bidi_import) {
                cat_blob_fd = xdup(helper->in);
-               argv_array_pushf(&argv, "--cat-blob-fd=%d", cat_blob_fd);
+               argv_array_pushf(&fastimport->args, "--cat-blob-fd=%d", cat_blob_fd);
        }
-       fastimport->argv = argv.argv;
        fastimport->git_cmd = 1;
 
        code = start_command(fastimport);
@@ -429,24 +416,24 @@ static int get_exporter(struct transport *transport,
 {
        struct helper_data *data = transport->data;
        struct child_process *helper = get_helper(transport);
-       int argc = 0, i;
+       int i;
+
        memset(fastexport, 0, sizeof(*fastexport));
 
        /* we need to duplicate helper->in because we want to use it after
         * fastexport is done with it. */
        fastexport->out = dup(helper->in);
-       fastexport->argv = xcalloc(6 + revlist_args->nr, sizeof(*fastexport->argv));
-       fastexport->argv[argc++] = "fast-export";
-       fastexport->argv[argc++] = "--use-done-feature";
-       fastexport->argv[argc++] = data->signed_tags ?
-               "--signed-tags=verbatim" : "--signed-tags=warn-strip";
+       argv_array_push(&fastexport->args, "fast-export");
+       argv_array_push(&fastexport->args, "--use-done-feature");
+       argv_array_push(&fastexport->args, data->signed_tags ?
+               "--signed-tags=verbatim" : "--signed-tags=warn-strip");
        if (data->export_marks)
-               fastexport->argv[argc++] = data->export_marks;
+               argv_array_pushf(&fastexport->args, "--export-marks=%s.tmp", data->export_marks);
        if (data->import_marks)
-               fastexport->argv[argc++] = data->import_marks;
+               argv_array_pushf(&fastexport->args, "--import-marks=%s", data->import_marks);
 
        for (i = 0; i < revlist_args->nr; i++)
-               fastexport->argv[argc++] = revlist_args->items[i].string;
+               argv_array_push(&fastexport->args, revlist_args->items[i].string);
 
        fastexport->git_cmd = 1;
        return start_command(fastexport);
@@ -487,7 +474,6 @@ static int fetch_with_import(struct transport *transport,
 
        if (finish_command(&fastimport))
                die("Error while running fast-import");
-       argv_array_free_detached(fastimport.argv);
 
        /*
         * The fast-import stream of a remote helper that advertises
@@ -563,7 +549,9 @@ static int process_connect_service(struct transport *transport,
                goto exit;
 
        sendline(data, &cmdbuf);
-       recvline_fh(input, &cmdbuf, name);
+       if (recvline_fh(input, &cmdbuf, name))
+               exit(128);
+
        if (!strcmp(cmdbuf.buf, "")) {
                data->no_disconnect_req = 1;
                if (debug)
@@ -650,7 +638,7 @@ static int push_update_ref_status(struct strbuf *buf,
                                   struct ref *remote_refs)
 {
        char *refname, *msg;
-       int status;
+       int status, forced = 0;
 
        if (starts_with(buf->buf, "ok ")) {
                status = REF_STATUS_OK;
@@ -708,6 +696,11 @@ static int push_update_ref_status(struct strbuf *buf,
                        free(msg);
                        msg = NULL;
                }
+               else if (!strcmp(msg, "forced update")) {
+                       forced = 1;
+                       free(msg);
+                       msg = NULL;
+               }
        }
 
        if (*ref)
@@ -729,26 +722,34 @@ static int push_update_ref_status(struct strbuf *buf,
        }
 
        (*ref)->status = status;
+       (*ref)->forced_update |= forced;
        (*ref)->remote_status = msg;
        return !(status == REF_STATUS_OK);
 }
 
-static void push_update_refs_status(struct helper_data *data,
-                                   struct ref *remote_refs)
+static int push_update_refs_status(struct helper_data *data,
+                                   struct ref *remote_refs,
+                                   int flags)
 {
        struct strbuf buf = STRBUF_INIT;
        struct ref *ref = remote_refs;
+       int ret = 0;
+
        for (;;) {
                char *private;
 
-               recvline(data, &buf);
+               if (recvline(data, &buf)) {
+                       ret = 1;
+                       break;
+               }
+
                if (!buf.len)
                        break;
 
                if (push_update_ref_status(&buf, &ref, remote_refs))
                        continue;
 
-               if (!data->refspecs || data->no_private_update)
+               if (flags & TRANSPORT_PUSH_DRY_RUN || !data->refspecs || data->no_private_update)
                        continue;
 
                /* propagate back the update to the remote namespace */
@@ -759,6 +760,7 @@ static void push_update_refs_status(struct helper_data *data,
                free(private);
        }
        strbuf_release(&buf);
+       return ret;
 }
 
 static int push_refs_with_push(struct transport *transport,
@@ -839,8 +841,7 @@ static int push_refs_with_push(struct transport *transport,
        sendline(data, &buf);
        strbuf_release(&buf);
 
-       push_update_refs_status(data, remote_refs);
-       return 0;
+       return push_update_refs_status(data, remote_refs, flags);
 }
 
 static int push_refs_with_export(struct transport *transport,
@@ -849,7 +850,7 @@ static int push_refs_with_export(struct transport *transport,
        struct ref *ref;
        struct child_process *helper, exporter;
        struct helper_data *data = transport->data;
-       struct string_list revlist_args = STRING_LIST_INIT_NODUP;
+       struct string_list revlist_args = STRING_LIST_INIT_DUP;
        struct strbuf buf = STRBUF_INIT;
 
        if (!data->refspecs)
@@ -860,19 +861,19 @@ static int push_refs_with_export(struct transport *transport,
                        die("helper %s does not support dry-run", data->name);
        }
 
+       if (flags & TRANSPORT_PUSH_FORCE) {
+               if (set_helper_option(transport, "force", "true") != 0)
+                       warning("helper %s does not support 'force'", data->name);
+       }
+
        helper = get_helper(transport);
 
        write_constant(helper->in, "export\n");
 
-       strbuf_reset(&buf);
-
        for (ref = remote_refs; ref; ref = ref->next) {
                char *private;
                unsigned char sha1[20];
 
-               if (ref->deletion)
-                       die("remote-helpers do not support ref deletion");
-
                private = apply_refspecs(data->refspecs, data->refspec_nr, ref->name);
                if (private && !get_sha1(private, sha1)) {
                        strbuf_addf(&buf, "^%s", private);
@@ -881,22 +882,46 @@ static int push_refs_with_export(struct transport *transport,
                }
                free(private);
 
-               if (ref->deletion)
-                       die("remote-helpers do not support ref deletion");
-
                if (ref->peer_ref) {
-                       if (strcmp(ref->peer_ref->name, ref->name))
-                               die("remote-helpers do not support old:new syntax");
-                       string_list_append(&revlist_args, ref->peer_ref->name);
+                       if (strcmp(ref->name, ref->peer_ref->name)) {
+                               if (!ref->deletion) {
+                                       const char *name;
+                                       int flag;
+
+                                       /* Follow symbolic refs (mainly for HEAD). */
+                                       name = resolve_ref_unsafe(ref->peer_ref->name, sha1, 1, &flag);
+                                       if (!name || !(flag & REF_ISSYMREF))
+                                               name = ref->peer_ref->name;
+
+                                       strbuf_addf(&buf, "%s:%s", name, ref->name);
+                               } else
+                                       strbuf_addf(&buf, ":%s", ref->name);
+
+                               string_list_append(&revlist_args, "--refspec");
+                               string_list_append(&revlist_args, buf.buf);
+                               strbuf_release(&buf);
+                       }
+                       if (!ref->deletion)
+                               string_list_append(&revlist_args, ref->peer_ref->name);
                }
        }
 
        if (get_exporter(transport, &exporter, &revlist_args))
                die("Couldn't run fast-export");
 
+       string_list_clear(&revlist_args, 1);
+
        if (finish_command(&exporter))
                die("Error while running fast-export");
-       push_update_refs_status(data, remote_refs);
+       if (push_update_refs_status(data, remote_refs, flags))
+               return 1;
+
+       if (data->export_marks) {
+               strbuf_addf(&buf, "%s.tmp", data->export_marks);
+               rename(buf.buf, data->export_marks);
+               strbuf_release(&buf);
+       }
+
        return 0;
 }
 
@@ -965,7 +990,8 @@ static struct ref *get_refs_list(struct transport *transport, int for_push)
 
        while (1) {
                char *eov, *eon;
-               recvline(data, &buf);
+               if (recvline(data, &buf))
+                       exit(128);
 
                if (!*buf.buf)
                        break;
@@ -1002,7 +1028,7 @@ static struct ref *get_refs_list(struct transport *transport, int for_push)
 
 int transport_helper_init(struct transport *transport, const char *name)
 {
-       struct helper_data *data = xcalloc(sizeof(*data), 1);
+       struct helper_data *data = xcalloc(1, sizeof(*data));
        data->name = name;
 
        if (getenv("GIT_TRANSPORT_HELPER_DEBUG"))