shared: varlink_server_contains_socket()

src/shared/varlink-serialize.c

@@ -2,6 +2,7 @@
 
 #include "log.h"
 #include "parse-util.h"
+#include "socket-util.h"
 #include "varlink-internal.h"
 #include "varlink-serialize.h"
 
@@ -84,3 +85,20 @@ int varlink_server_deserialize_one(sd_varlink_server *s, const char *value, FDSe
         LIST_PREPEND(sockets, s->sockets, TAKE_PTR(ss));
         return 0;
 }
+
+bool varlink_server_contains_socket(sd_varlink_server *s, const char *address) {
+        int r;
+
+        assert(s);
+        assert(address);
+
+        LIST_FOREACH(sockets, ss, s->sockets) {
+                r = socket_address_equal_unix(ss->address, address);
+                if (r < 0)
+                        log_debug_errno(r, "Failed to compare '%s' and '%s', ignoring: %m", ss->address, address);
+                if (r > 0)
+                        return true;
+        }
+
+        return false;
+}

src/shared/varlink-serialize.h

@@ -9,3 +9,5 @@
 
 int varlink_server_serialize(sd_varlink_server *s, FILE *f, FDSet *fds);
 int varlink_server_deserialize_one(sd_varlink_server *s, const char *value, FDSet *fds);
+
+bool varlink_server_contains_socket(sd_varlink_server *s, const char *address);