run_tests: do some more extensive testing

1) force a config reload after some initial tests.
   this will allow to identify memleaks using the valgrind test,
   as this will free all structures allocated for the config, and
   recreate them.
2) test ErrorFile directive by adding several of them.
   this should help catch regressions such as the one fixed in
   4847d8cdb3.
   it will also test memleaks in the related code paths.
3) test some scenarios that should produce errors and use the
   configured ErrorFile directives.

tests/scripts/run_tests.sh

@@ -80,6 +80,9 @@ Listen $TINYPROXY_IP
 Timeout 600
 StatHost "$TINYPROXY_STATHOST_IP"
 DefaultErrorFile "$TINYPROXY_DATA_DIR/debug.html"
+ErrorFile 400 "$TINYPROXY_DATA_DIR/debug.html"
+ErrorFile 403 "$TINYPROXY_DATA_DIR/debug.html"
+ErrorFile 501 "$TINYPROXY_DATA_DIR/debug.html"
 StatFile "$TINYPROXY_DATA_DIR/stats.html"
 Logfile "$TINYPROXY_LOG_FILE"
 PidFile "$TINYPROXY_PID_FILE"
@@ -90,12 +93,14 @@ ViaProxyName "tinyproxy"
 #DisableViaHeader Yes
 ConnectPort 443
 ConnectPort 563
-FilterURLs On
+#FilterURLs On
 Filter "$TINYPROXY_FILTER_FILE"
 XTinyproxy Yes
 EOF
 
-	touch $TINYPROXY_FILTER_FILE
+cat << 'EOF' > $TINYPROXY_FILTER_FILE
+.*\.google-analytics\.com$
+EOF
 }
 
 start_tinyproxy() {
@@ -104,6 +109,13 @@ start_tinyproxy() {
 	echo " done (listening on $TINYPROXY_IP:$TINYPROXY_PORT)"
 }
 
+reload_config() {
+	echo -n "signaling tinyproxy to reload config..."
+	pid=$(cat $TINYPROXY_PID_FILE)
+	kill -s SIGHUP $pid
+	echo
+}
+
 stop_tinyproxy() {
 	echo -n "killing tinyproxy..."
 	pid=$(cat $TINYPROXY_PID_FILE)
@@ -157,7 +169,7 @@ wait_for_some_seconds() {
 }
 
 run_basic_webclient_request() {
-	$WEBCLIENT_BIN $1 $2 >> $WEBCLIENT_LOG 2>&1
+	$WEBCLIENT_BIN $1 $2 > $WEBCLIENT_LOG 2>&1
 	WEBCLIENT_EXIT_CODE=$?
 	if test "x$WEBCLIENT_EXIT_CODE" = "x0" ; then
 		echo " ok"
@@ -165,11 +177,31 @@ run_basic_webclient_request() {
 		echo "ERROR ($WEBCLIENT_EXIT_CODE)"
 		echo "webclient output:"
 		cat $WEBCLIENT_LOG
+		echo "######################################"
 	fi
 
 	return $WEBCLIENT_EXIT_CODE
 }
 
+run_failure_webclient_request() {
+	ec=$1
+	expected_error=$(($1 - 399))
+	shift
+	$WEBCLIENT_BIN "$1" "$2" "$3" "$4" > $WEBCLIENT_LOG 2>&1
+	WEBCLIENT_EXIT_CODE=$?
+	if test "x$WEBCLIENT_EXIT_CODE" = "x$expected_error" ; then
+		echo " ok, got expected error code $ec"
+		return 0
+	else
+		echo "ERROR ($WEBCLIENT_EXIT_CODE)"
+		echo "webclient output:"
+		cat $WEBCLIENT_LOG
+		echo "######################################"
+	fi
+
+	return 1
+}
+
 # "main"
 
 provision_initial
@@ -179,10 +211,11 @@ provision_webserver
 start_webserver
 start_tinyproxy
 
-wait_for_some_seconds 3
+wait_for_some_seconds 1
 
 FAILED=0
 
+basic_test() {
 echo -n "checking direct connection to web server..."
 run_basic_webclient_request "$WEBSERVER_IP:$WEBSERVER_PORT" /
 test "x$?" = "x0" || FAILED=$((FAILED + 1))
@@ -194,6 +227,26 @@ test "x$?" = "x0" || FAILED=$((FAILED + 1))
 echo -n "requesting statspage via stathost url..."
 run_basic_webclient_request "$TINYPROXY_IP:$TINYPROXY_PORT" "http://$TINYPROXY_STATHOST_IP"
 test "x$?" = "x0" || FAILED=$((FAILED + 1))
+}
+
+ext_test() {
+echo -n "checking bogus request..."
+run_failure_webclient_request 400 --method="BIG FART" "$TINYPROXY_IP:$TINYPROXY_PORT" "http://$WEBSERVER_IP:$WEBSERVER_PORT"
+test "x$?" = "x0" || FAILED=$((FAILED + 1))
+
+echo -n "testing connection to filtered domain..."
+run_failure_webclient_request 403 "$TINYPROXY_IP:$TINYPROXY_PORT" "http://badgoy.google-analytics.com/"
+test "x$?" = "x0" || FAILED=$((FAILED + 1))
+
+echo -n "requesting connect method to denied port..."
+run_failure_webclient_request 403 --method=CONNECT "$TINYPROXY_IP:$TINYPROXY_PORT" "localhost:12345"
+test "x$?" = "x0" || FAILED=$((FAILED + 1))
+}
+
+basic_test
+reload_config
+basic_test
+ext_test
 
 echo "$FAILED errors"