X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=src%2Fbus-proxyd%2Fbus-proxyd.c;h=80f83e777fee9fc9bb66dc5e908016ad8d68e7d0;hb=3b5b000fbc2ed6d953df2de528a50a8348afc618;hp=b03845921f822a933a432ffdbf6235dfe42e0808;hpb=44b0ed05865e0aa900471a5e822dbd1b4e840053;p=elogind.git

diff --git a/src/bus-proxyd/bus-proxyd.c b/src/bus-proxyd/bus-proxyd.c
index b03845921..80f83e777 100644
--- a/src/bus-proxyd/bus-proxyd.c
+++ b/src/bus-proxyd/bus-proxyd.c
@@ -172,7 +172,7 @@ static int rename_service(sd_bus *a, sd_bus *b) {
                              uid, name);
 
                 if (m > w)
-                        memset(arg_command_line_buffer + w, 0, m - w);
+                        memzero(arg_command_line_buffer + w, m - w);
         }
 
         log_debug("Running on behalf of PID "PID_FMT" (%s), UID "UID_FMT" (%s), %s",
@@ -216,19 +216,19 @@ static int synthesize_name_acquired(sd_bus *a, sd_bus *b, sd_bus_message *m) {
 
                 r = sd_bus_message_new_signal(
                                 b,
+                                &n,
                                 "/org/freedesktop/DBus",
                                 "org.freedesktop.DBus",
-                                "NameLost",
-                                &n);
+                                "NameLost");
 
         } else if (streq(new_owner, a->unique_name)) {
 
                 r = sd_bus_message_new_signal(
                                 b,
+                                &n,
                                 "/org/freedesktop/DBus",
                                 "org.freedesktop.DBus",
-                                "NameAcquired",
-                                &n);
+                                "NameAcquired");
         } else
                 return 0;
 
@@ -359,10 +359,10 @@ static int process_hello(sd_bus *a, sd_bus *b, sd_bus_message *m, bool *got_hell
         n = sd_bus_message_unref(n);
         r = sd_bus_message_new_signal(
                         b,
+                        &n,
                         "/org/freedesktop/DBus",
                         "org.freedesktop.DBus",
-                        "NameAcquired",
-                        &n);
+                        "NameAcquired");
         if (r < 0) {
                 log_error("Failed to allocate initial NameAcquired message: %s", strerror(-r));
                 return r;
@@ -395,6 +395,36 @@ static int process_hello(sd_bus *a, sd_bus *b, sd_bus_message *m, bool *got_hell
         return 1;
 }
 
+static int patch_sender(sd_bus *a, sd_bus_message *m) {
+        char **well_known = NULL;
+        sd_bus_creds *c;
+        int r;
+
+        assert(a);
+        assert(m);
+
+        if (!a->is_kernel)
+                return 0;
+
+        /* We will change the sender of messages from the bus driver
+         * so that they originate from the bus driver. This is a
+         * speciality originating from dbus1, where the bus driver did
+         * not have a unique id, but only the well-known name. */
+
+        c = sd_bus_message_get_creds(m);
+        if (!c)
+                return 0;
+
+        r = sd_bus_creds_get_well_known_names(c, &well_known);
+        if (r < 0)
+                return r;
+
+        if (strv_contains(well_known, "org.freedesktop.DBus"))
+                m->sender = "org.freedesktop.DBus";
+
+        return 0;
+}
+
 int main(int argc, char *argv[]) {
 
         _cleanup_bus_unref_ sd_bus *a = NULL, *b = NULL;
@@ -612,6 +642,8 @@ int main(int argc, char *argv[]) {
                                         goto finish;
                                 }
 
+                                patch_sender(a, m);
+
                                 k = sd_bus_send(b, m, NULL);
                                 if (k < 0) {
                                         if (k == -ECONNRESET)
@@ -742,8 +774,6 @@ int main(int argc, char *argv[]) {
                 }
         }
 
-        r = 0;
-
 finish:
         sd_bus_flush(a);
         sd_bus_flush(b);