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.

(cherry picked from commit 027871f)

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>