From b44defe60a1e89e8f52abd40f90b849b7806c190 Mon Sep 17 00:00:00 2001
From: Sander in 't Veld <sanderintveld@hotmail.com>
Date: Fri, 27 Jul 2018 19:04:04 +0200
Subject: [PATCH] [Linux] Null-terminate output from readlink in
 Discord_Register. (#208)

* Explicitly null-terminate the output from readlink in discord_register_linux.cpp.

* The return value of readlink is a signed size_t.
---
 src/discord_register_linux.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/discord_register_linux.cpp b/src/discord_register_linux.cpp
index b10f96d..34f8701 100644
--- a/src/discord_register_linux.cpp
+++ b/src/discord_register_linux.cpp
@@ -33,9 +33,11 @@ extern "C" DISCORD_EXPORT void Discord_Register(const char* applicationId, const
 
     char exePath[1024];
     if (!command || !command[0]) {
-        if (readlink("/proc/self/exe", exePath, sizeof(exePath)) <= 0) {
+        ssize_t size = readlink("/proc/self/exe", exePath, sizeof(exePath));
+        if (size <= 0 || size >= sizeof(exePath)) {
             return;
         }
+        exePath[size] = '\0';
         command = exePath;
     }