From 5846b7df4e891e3db85e2719d5d28507e0da2468 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Christian=20G=C3=B6ttsche?= <cgzones@googlemail.com>
Date: Tue, 2 Apr 2024 19:30:40 +0200
Subject: [PATCH] Check for absolute paths in environment variables

Only use the environment variables HOME and XDG_CONFIG_HOME, or the home
directory from getpwuid(3) if they are absolute paths.
Avoid different behavior depending on the current working directory.
---
 Settings.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/Settings.c b/Settings.c
index 6cbe46b9..670acabe 100644
--- a/Settings.c
+++ b/Settings.c
@@ -799,14 +799,14 @@ Settings* Settings_new(unsigned int initialCpuCount, Hashtable* dynamicMeters, H
       this->initialFilename = xStrdup(rcfile);
    } else {
       const char* home = getenv("HOME");
-      if (!home) {
+      if (!home || home[0] != '/') {
          const struct passwd* pw = getpwuid(getuid());
-         home = pw ? pw->pw_dir : "";
+         home = (pw && pw->pw_dir && pw->pw_dir[0] == '/') ? pw->pw_dir : "";
       }
       const char* xdgConfigHome = getenv("XDG_CONFIG_HOME");
       char* configDir = NULL;
       char* htopDir = NULL;
-      if (xdgConfigHome) {
+      if (xdgConfigHome && xdgConfigHome[0] == '/') {
          this->initialFilename = String_cat(xdgConfigHome, "/htop/htoprc");
          configDir = xStrdup(xdgConfigHome);
          htopDir = String_cat(xdgConfigHome, "/htop");