TNC: Allow tnc_config file path to be replaced

This is for enabling easier testing of TNCS/TNCC functionality as part
of the test scripts without having to use the fixed /etc/tnc_config
location that could be used by the main system and would require changes
within /etc.

Signed-off-by: Jouni Malinen <j@w1.fi>

src/eap_peer/tncc.c

@@ -25,7 +25,9 @@
 #endif /* UNICODE */
 
 
+#ifndef TNC_CONFIG_FILE
 #define TNC_CONFIG_FILE "/etc/tnc_config"
+#endif /* TNC_CONFIG_FILE */
 #define TNC_WINREG_PATH TEXT("SOFTWARE\\Trusted Computing Group\\TNC\\IMCs")
 #define IF_TNCCS_START \
 "<?xml version=\"1.0\"?>\n" \

src/eap_server/tncs.c

@@ -19,7 +19,9 @@
 /* TODO: TNCS must be thread-safe; review the code and add locking etc. if
  * needed.. */
 
+#ifndef TNC_CONFIG_FILE
 #define TNC_CONFIG_FILE "/etc/tnc_config"
+#endif /* TNC_CONFIG_FILE */
 #define IF_TNCCS_START \
 "<?xml version=\"1.0\"?>\n" \
 "<TNCCS-Batch BatchId=\"%d\" Recipient=\"TNCS\" " \