From d3c8c3dd004e727bfa85801ea9bf37b109c81f8c Mon Sep 17 00:00:00 2001
From: Derek Burdick <derek.burdick@gmail.com>
Date: Mon, 5 Jun 2023 20:39:25 -0400
Subject: [PATCH] ssh/tailssh: Max Username Length 256 for linux

Max username length is increased to 256 on linux to match /usr/include/bits/local_lim.h

Fixes #8277

Signed-off-by: Derek Burdick <derek-burdick@users.noreply.github.com>
---
 ssh/tailssh/user.go | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/ssh/tailssh/user.go b/ssh/tailssh/user.go
index 0f2709e62..6acc66c07 100644
--- a/ssh/tailssh/user.go
+++ b/ssh/tailssh/user.go
@@ -81,7 +81,11 @@ func userLookup(username string) (*userMeta, error) {
 }
 
 func validUsername(uid string) bool {
-	if len(uid) > 32 || len(uid) == 0 {
+	maxUid := 32
+	if runtime.GOOS == "linux" {
+		maxUid = 256
+	}
+	if len(uid) > maxUid || len(uid) == 0 {
 		return false
 	}
 	for _, r := range uid {