X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=src%2Flibsystemd-bus%2Fbus-message.c;h=dc856944719c50406f5419a96e0e1875714a0d86;hb=6717d473506800363af9d2bafbf263ee054e856d;hp=a1e6c9f97368123fd9143c71a4e31853566d092c;hpb=99f37ad86e114b2d1c9eaedf2bc1a0004a265d26;p=elogind.git

diff --git a/src/libsystemd-bus/bus-message.c b/src/libsystemd-bus/bus-message.c
index a1e6c9f97..dc8569447 100644
--- a/src/libsystemd-bus/bus-message.c
+++ b/src/libsystemd-bus/bus-message.c
@@ -568,6 +568,7 @@ static int message_new_reply(
         }
 
         t->dont_send = !!(call->header->flags & SD_BUS_MESSAGE_NO_REPLY_EXPECTED);
+        t->enforced_reply_signature = call->enforced_reply_signature;
 
         *m = t;
         return 0;
@@ -3962,6 +3963,13 @@ int bus_message_seal(sd_bus_message *m, uint64_t serial) {
         if (m->poisoned)
                 return -ESTALE;
 
+        /* In vtables the return signature of method calls is listed,
+         * let's check if they match if this is a response */
+        if (m->header->type == SD_BUS_MESSAGE_METHOD_RETURN &&
+            m->enforced_reply_signature &&
+            !streq(strempty(m->root_container.signature), m->enforced_reply_signature))
+                return -ENOMSG;
+
         /* If there's a non-trivial signature set, then add it in here */
         if (!isempty(m->root_container.signature)) {
                 r = message_append_field_signature(m, SD_BUS_MESSAGE_HEADER_SIGNATURE, m->root_container.signature, NULL);