Error out if given RDomain if unsupported.

If the config contained 'RDomain %D' on a platform that did not support
it, the error would not be detected until runtime resulting in a broken
sshd.  Detect this earlier and error out if found.  bz#3126, based on a
patch from jjelen at redhat.com, tweaks and ok djm@

1 files changed, 6 insertions, 0 deletions

diff --git a/servconf.c b/servconf.c
index ce5572db7..ba0a92c7b 100644
--- a/servconf.c
+++ b/servconf.c
@@ -2332,6 +2332,10 @@ process_server_config_line_depth(ServerOptions *options, char *line,
                 goto parse_flag;
 
         case sRDomain:
+#if !defined(__OpenBSD__) && !defined(HAVE_SYS_SET_PROCESS_RDOMAIN)
+                fatal("%s line %d: setting RDomain not supported on this "
+                    "platform.", filename, linenum);
+#endif
                 charptr = &options->routing_domain;
                 arg = strdelim(&cp);
                 if (!arg || *arg == '\0')
@@ -2840,7 +2844,9 @@ dump_config(ServerOptions *o)
         dump_cfg_string(sHostbasedAcceptedKeyTypes, o->hostbased_key_types);
         dump_cfg_string(sHostKeyAlgorithms, o->hostkeyalgorithms);
         dump_cfg_string(sPubkeyAcceptedKeyTypes, o->pubkey_key_types);
+#if defined(__OpenBSD__) || defined(HAVE_SYS_SET_PROCESS_RDOMAIN)
         dump_cfg_string(sRDomain, o->routing_domain);
+#endif
 
         /* string arguments requiring a lookup */
         dump_cfg_string(sLogLevel, log_level_name(o->log_level));