avoid segfault when host is not given

git-svn-id: https://nagiosplug.svn.sourceforge.net/svnroot/nagiosplug/nagiosplug/trunk@240 f882894a-f735-0410-b71e-b25c423dba1c

diff --git a/plugins/check_by_ssh.c b/plugins/check_by_ssh.c
index 5c5053092541f0c5f98644254cacdfcdc855a6c8..34e6727478c17d0f3e0e45edb3794cddb0998ffc 100644 (file)
--- a/plugins/check_by_ssh.c
+++ b/plugins/check_by_ssh.c
@@ -283,14 +283,19 @@ process_arguments (int argc, char **argv)
 
        c = optind;
        if (hostname == NULL) {
-               if (!is_host (argv[c]))
+               if (c <= argc) {
+                       terminate (STATE_UNKNOWN, "%s: You must provide a host name\n", progname);
+               } else if (!is_host (argv[c]))
                        terminate (STATE_UNKNOWN, "%s: Invalid host name %s\n", progname, argv[c]);
                hostname = argv[c++];
        }
 
        if (strlen(remotecmd) == 0) {
                for (; c < argc; c++)
-                       asprintf (&remotecmd, "%s %s", remotecmd, argv[c]);
+                       if (strlen(remotecmd) > 0)
+                               asprintf (&remotecmd, "%s %s", remotecmd, argv[c]);
+                       else
+                               asprintf (&remotecmd, "%s", argv[c]);
        }
 
        if (commands > 1)