Pass user token back to portal

It is nice to know what user was denied or authenticated when he's
redirected back to the portal. We can use token value to fully
identify user at the portal side.

Author: sysoleg

src/auth.c

@@ -199,8 +199,8 @@ authenticate_client(request * r)
               "Got DENIED from central server authenticating token %s from %s at %s - deleting from firewall and redirecting them to denied message",
               client->token, client->ip, client->mac);
         fw_deny(client);
-        safe_asprintf(&urlFragment, "%smessage=%s",
-                      auth_server->authserv_msg_script_path_fragment, GATEWAY_MESSAGE_DENIED);
+        safe_asprintf(&urlFragment, "%smessage=%s&token=%s",
+                      auth_server->authserv_msg_script_path_fragment, GATEWAY_MESSAGE_DENIED, client->token);
         http_send_redirect_to_auth(r, urlFragment, "Redirect to denied message");
         free(urlFragment);
         break;
@@ -210,8 +210,8 @@ authenticate_client(request * r)
         debug(LOG_INFO, "Got VALIDATION from central server authenticating token %s from %s at %s"
               "- adding to firewall and redirecting them to activate message", client->token, client->ip, client->mac);
         fw_allow(client, FW_MARK_PROBATION);
-        safe_asprintf(&urlFragment, "%smessage=%s",
-                      auth_server->authserv_msg_script_path_fragment, GATEWAY_MESSAGE_ACTIVATE_ACCOUNT);
+        safe_asprintf(&urlFragment, "%smessage=%s&token=%s",
+                      auth_server->authserv_msg_script_path_fragment, GATEWAY_MESSAGE_ACTIVATE_ACCOUNT, client->token);
         http_send_redirect_to_auth(r, urlFragment, "Redirect to activate message");
         free(urlFragment);
         break;
@@ -222,7 +222,8 @@ authenticate_client(request * r)
               "adding to firewall and redirecting them to portal", client->token, client->ip, client->mac);
         fw_allow(client, FW_MARK_KNOWN);
         served_this_session++;
-        safe_asprintf(&urlFragment, "%sgw_id=%s", auth_server->authserv_portal_script_path_fragment, config->gw_id);
+        safe_asprintf(&urlFragment, "%sgw_id=%s&token=%s", auth_server->authserv_portal_script_path_fragment,
+                      config->gw_id, client->token);
         http_send_redirect_to_auth(r, urlFragment, "Redirect to portal");
         free(urlFragment);
         break;
@@ -231,8 +232,9 @@ authenticate_client(request * r)
         /* Client had X minutes to validate account by email and didn't = too late */
         debug(LOG_INFO, "Got VALIDATION_FAILED from central server authenticating token %s from %s at %s "
               "- redirecting them to failed_validation message", client->token, client->ip, client->mac);
-        safe_asprintf(&urlFragment, "%smessage=%s",
-                      auth_server->authserv_msg_script_path_fragment, GATEWAY_MESSAGE_ACCOUNT_VALIDATION_FAILED);
+        safe_asprintf(&urlFragment, "%smessage=%s&token=%s",
+                      auth_server->authserv_msg_script_path_fragment, GATEWAY_MESSAGE_ACCOUNT_VALIDATION_FAILED,
+                      client->token);
         http_send_redirect_to_auth(r, urlFragment, "Redirect to failed validation message");
         free(urlFragment);
         break;