Cache group name in sys_logger_t to avoid problems with Vstr.

Because syslog(3) is not replaced when using the Vstr wrapper, %N can
not be resolved properly.

diff --git a/src/libcharon/bus/listeners/sys_logger.c b/src/libcharon/bus/listeners/sys_logger.c
index 1e80387..c29c9f2 100644 (file)
--- a/src/libcharon/bus/listeners/sys_logger.c
+++ b/src/libcharon/bus/listeners/sys_logger.c
@@ -54,11 +54,13 @@ METHOD(listener_t, log_, bool,
 {
        if (level <= this->levels[group])
        {
-               char buffer[8192], namestr[128] = "";
+               char buffer[8192], groupstr[4], namestr[128] = "";
                char *current = buffer, *next;
 
                /* write in memory buffer first */
                vsnprintf(buffer, sizeof(buffer), format, args);
+               /* cache group name */
+               snprintf(groupstr, sizeof(groupstr), "%N", debug_names, group);
 
                if (this->ike_name && ike_sa)
                {
@@ -82,8 +84,8 @@ METHOD(listener_t, log_, bool,
                        {
                                *(next++) = '\0';
                        }
-                       syslog(this->facility|LOG_INFO, "%.2d[%N]%s %s\n",
-                                  thread, debug_names, group, namestr, current);
+                       syslog(this->facility|LOG_INFO, "%.2d[%s]%s %s\n",
+                                  thread, groupstr, namestr, current);
                        current = next;
                }
        }