From bcf5b21208a4b6a7f77d4b308d2cf45db815bb95 Mon Sep 17 00:00:00 2001
From: beyondkmp <beyondkmp@gmail.com>
Date: Thu, 20 Jun 2019 11:03:50 +0800
Subject: [PATCH] Fix: check target is valid in rules (#210)

---
 config/config.go | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/config/config.go b/config/config.go
index e89e934..8b4e0bc 100644
--- a/config/config.go
+++ b/config/config.go
@@ -157,7 +157,7 @@ func Parse(path string) (*Config, error) {
 	}
 	config.Proxies = proxies
 
-	rules, err := parseRules(rawCfg)
+	rules, err := parseRules(rawCfg, proxies)
 	if err != nil {
 		return nil, err
 	}
@@ -354,7 +354,7 @@ func parseProxies(cfg *rawConfig) (map[string]C.Proxy, error) {
 	return proxies, nil
 }
 
-func parseRules(cfg *rawConfig) ([]C.Rule, error) {
+func parseRules(cfg *rawConfig, proxies map[string]C.Proxy) ([]C.Rule, error) {
 	rules := []C.Rule{}
 
 	rulesConfig := cfg.Rule
@@ -376,6 +376,10 @@ func parseRules(cfg *rawConfig) ([]C.Rule, error) {
 			return nil, fmt.Errorf("Rules[%d] [%s] error: format invalid", idx, line)
 		}
 
+		if _, ok := proxies[target]; !ok {
+			return nil, fmt.Errorf("Rules[%d] [%s] error: proxy [%s] not found", idx, line, target)
+		}
+
 		rule = trimArr(rule)
 		var parsed C.Rule
 		switch rule[0] {