From 48b70ecff1152f9eec091ff03b803d997a573b19 Mon Sep 17 00:00:00 2001
From: Ryan Schneider <ryanleeschneider@gmail.com>
Date: Fri, 2 Nov 2018 13:26:45 -0700
Subject: cmd, eth: Add support for `--whitelist <blocknum>=<hash>,...` flag

* Rejects peers that respond with a different hash for any of the passed in block numbers.
* Meant for emergency situations when the network forks unexpectedly.
---
 eth/config.go | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'eth/config.go')

diff --git a/eth/config.go b/eth/config.go
index 601f4735e..a5c209512 100644
--- a/eth/config.go
+++ b/eth/config.go
@@ -87,6 +87,9 @@ type Config struct {
 	SyncMode  downloader.SyncMode
 	NoPruning bool
 
+	// Whitelist of required block number -> hash values to accept
+	Whitelist map[uint64]common.Hash `toml:"-"`
+
 	// Light client options
 	LightServ  int `toml:",omitempty"` // Maximum percentage of time allowed for serving LES requests
 	LightPeers int `toml:",omitempty"` // Maximum number of LES client peers
-- 
cgit