push: anonymize URL in status output

diff --git a/transport.c b/transport.c
index eca9b8c817bd723532d7f92da8cfa9f8ee82bb43..ff1b516943fd4069b9be247a8ec348b51df1ba29 100644 (file)
--- a/transport.c
+++ b/transport.c
@@ -681,8 +681,11 @@ static void print_ok_ref_status(struct ref *ref, int porcelain)
 
 static int print_one_push_status(struct ref *ref, const char *dest, int count, int porcelain)
 {
-       if (!count)
-               fprintf(porcelain ? stdout : stderr, "To %s\n", dest);
+       if (!count) {
+               char *url = transport_anonymize_url(dest);
+               fprintf(porcelain ? stdout : stderr, "To %s\n", url);
+               free(url);
+       }
 
        switch(ref->status) {
        case REF_STATUS_NONE:
@@ -914,6 +917,42 @@ static int external_specification_len(const char *url)
        return strchr(url, ':') - url;
 }
 
+static const struct string_list *protocol_whitelist(void)
+{
+       static int enabled = -1;
+       static struct string_list allowed = STRING_LIST_INIT_DUP;
+
+       if (enabled < 0) {
+               const char *v = getenv("GIT_ALLOW_PROTOCOL");
+               if (v) {
+                       string_list_split(&allowed, v, ':', -1);
+                       string_list_sort(&allowed);
+                       enabled = 1;
+               } else {
+                       enabled = 0;
+               }
+       }
+
+       return enabled ? &allowed : NULL;
+}
+
+int is_transport_allowed(const char *type)
+{
+       const struct string_list *allowed = protocol_whitelist();
+       return !allowed || string_list_has_string(allowed, type);
+}
+
+void transport_check_allowed(const char *type)
+{
+       if (!is_transport_allowed(type))
+               die("transport '%s' not allowed", type);
+}
+
+int transport_restrict_protocols(void)
+{
+       return !!protocol_whitelist();
+}
+
 struct transport *transport_get(struct remote *remote, const char *url)
 {
        const char *helper;
@@ -945,12 +984,14 @@ struct transport *transport_get(struct remote *remote, const char *url)
        if (helper) {
                transport_helper_init(ret, helper);
        } else if (starts_with(url, "rsync:")) {
+               transport_check_allowed("rsync");
                ret->get_refs_list = get_refs_via_rsync;
                ret->fetch = fetch_objs_via_rsync;
                ret->push = rsync_transport_push;
                ret->smart_options = NULL;
        } else if (url_is_local_not_ssh(url) && is_file(url) && is_bundle(url, 1)) {
                struct bundle_transport_data *data = xcalloc(1, sizeof(*data));
+               transport_check_allowed("file");
                ret->data = data;
                ret->get_refs_list = get_refs_from_bundle;
                ret->fetch = fetch_refs_from_bundle;
@@ -962,7 +1003,10 @@ struct transport *transport_get(struct remote *remote, const char *url)
                || starts_with(url, "ssh://")
                || starts_with(url, "git+ssh://")
                || starts_with(url, "ssh+git://")) {
-               /* These are builtin smart transports. */
+               /*
+                * These are builtin smart transports; "allowed" transports
+                * will be checked individually in git_connect.
+                */
                struct git_transport_data *data = xcalloc(1, sizeof(*data));
                ret->data = data;
                ret->set_option = NULL;