From: Jason A. Donenfeld <Jason@zx2c4.com>
Date: Wed, 23 Dec 2020 13:06:26 +0000 (+0100)
Subject: Kit: do not crash on [abcd::] with missing port
X-Git-Tag: 1.0.12-22~4
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=b67acaccff1b587717c1fc444179307da4919c12;p=thirdparty%2Fwireguard-apple.git

Kit: do not crash on [abcd::] with missing port

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
---

diff --git a/Sources/WireGuardKit/Endpoint.swift b/Sources/WireGuardKit/Endpoint.swift
index d86290f..8454d87 100644
--- a/Sources/WireGuardKit/Endpoint.swift
+++ b/Sources/WireGuardKit/Endpoint.swift
@@ -52,6 +52,7 @@ extension Endpoint {
             let startOfHost = string.index(after: string.startIndex)
             guard let endOfHost = string.dropFirst().firstIndex(of: "]") else { return nil }
             let afterEndOfHost = string.index(after: endOfHost)
+            if afterEndOfHost == string.endIndex { return nil }
             guard string[afterEndOfHost] == ":" else { return nil }
             startOfPort = string.index(after: afterEndOfHost)
             hostString = String(string[startOfHost ..< endOfHost])