cplc: use route names to set proxy_route modparam

- Changed proxy_route modparam type to string. The route to be executed
  needs to be defined by name as the current id definition led to some
  unpredictable behavior.

src/modules/cplc/cplc.c

@@ -62,6 +62,7 @@ static str db_table        = str_init("cpl");  /* database table */
 static char *dtd_file      = 0;  /* name of the DTD file for CPL parser */
 static char *lookup_domain = 0;
 static str  timer_avp      = STR_NULL;  /* name of variable timer AVP */
+static str  proxy_route    = STR_NULL;
 
 
 struct cpl_enviroment    cpl_env = {
@@ -132,7 +133,7 @@ static param_export_t params[] = {
 	{"db_table",       PARAM_STR, &db_table                        },
 	{"cpl_dtd_file",   PARAM_STRING, &dtd_file                          },
 	{"proxy_recurse",  INT_PARAM, &cpl_env.proxy_recurse             },
-	{"proxy_route",    INT_PARAM, &cpl_env.proxy_route               },
+	{"proxy_route",    PARAM_STR, &proxy_route                     },
 	{"log_dir",        PARAM_STRING, &cpl_env.log_dir                   },
 	{"case_sensitive", INT_PARAM, &cpl_env.case_sensitive            },
 	{"realm_prefix",   PARAM_STR, &cpl_env.realm_prefix            },
@@ -232,6 +233,14 @@ static int cpl_init(void)
 		goto error;
 	}
 
+	if (proxy_route.len>0) {
+		cpl_env.proxy_route=route_lookup(&main_rt, proxy_route.s);
+		if (cpl_env.proxy_route==-1) {
+			LM_CRIT("route <%s> defined in proxy_route does not exist\n",proxy_route.s);
+			goto error;
+		}
+	}
+
 	/* fix the timer_avp name */
 	if (timer_avp.s && timer_avp.len > 0) {
 		if (pv_parse_spec(&timer_avp, &avp_spec)==0

src/modules/cplc/doc/cplc_admin.xml

@@ -280,22 +280,22 @@ modparam("cpl-c","proxy_recurse",2)
 			</example>
 		</section>
 		<section>
-			<title><varname>proxy_route</varname> (int)</title>
+			<title><varname>proxy_route</varname> (string)</title>
 			<para>
 				Before doing proxy (forward), a script route can be executed.
 				All modifications made by that route will be reflected only for
 				the current branch.
 			</para>
 			<para>
 				<emphasis>
-					Default value of this parameter is 0 (none).
+					Default value of this parameter is NULL (none).
 				</emphasis>
 			</para>
 			<example>
 				<title>Set <varname>proxy_route</varname> parameter</title>
 				<programlisting format="linespecific">
 ...
-modparam("cpl-c","proxy_route",1)
+modparam("cpl-c","proxy_route","1")
 ...
 </programlisting>
 			</example>