#!/bin/bash

# Copyright (C) 2022-2024 Thien Tran
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may not
# use this file except in compliance with the License. You may obtain a copy of
# the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations under
# the License.

unpriv(){
  sudo -u nobody "$@"
}

# Compliance
sudo systemctl mask debug-shell.service
sudo systemctl mask kdump.service

# Setting umask to 077
umask 077
sudo sed -i 's/umask 022/umask 077/g' /etc/bashrc
echo 'umask 077' | sudo tee -a /etc/bashrc

# Make home directory private
sudo chmod 700 /home/*

# Harden SSH
unpriv curl --proxy http://127.0.0.1:8082 https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/ssh/ssh_config.d/10-custom.conf | sudo tee /etc/ssh/ssh_config.d/10-custom.conf
sudo chmod 644 /etc/ssh/ssh_config.d/10-custom.conf

# Security kernel settings
unpriv curl --proxy http://127.0.0.1:8082 https://raw.githubusercontent.com/Kicksecure/security-misc/master/etc/modprobe.d/30_security-misc.conf | sudo tee /etc/modprobe.d/30_security-misc.conf
sudo chmod 644 /etc/modprobe.d/30_security-misc.conf
sudo sed -i 's/#install msr/install msr/g' /etc/modprobe.d/30_security-misc.conf
unpriv curl --proxy http://127.0.0.1:8082 https://raw.githubusercontent.com/Kicksecure/security-misc/master/usr/lib/sysctl.d/990-security-misc.conf | sudo tee /etc/sysctl.d/990-security-misc.conf
sudo chmod 644 /etc/sysctl.d/990-security-misc.conf
sudo sed -i 's/kernel.yama.ptrace_scope=2/kernel.yama.ptrace_scope=3/g' /etc/sysctl.d/990-security-misc.conf
unpriv curl --proxy http://127.0.0.1:8082 https://raw.githubusercontent.com/Kicksecure/security-misc/master/usr/lib/sysctl.d/30_silent-kernel-printk.conf | sudo tee /etc/sysctl.d/30_silent-kernel-printk.conf
sudo chmod 644 /etc/sysctl.d/30_silent-kernel-printk.conf
unpriv curl --proxy http://127.0.0.1:8082 https://raw.githubusercontent.com/Kicksecure/security-misc/master/usr/lib/sysctl.d/30_security-misc_kexec-disable.conf | sudo tee /etc/sysctl.d/30_security-misc_kexec-disable.conf
sudo chmod 644 /etc/sysctl.d/30_security-misc_kexec-disable.conf
# Dracut doesn't seem to work - need to investigate
# dracut -f
sudo sysctl -p

# Disable coredump
unpriv curl --proxy http://127.0.0.1:8082 https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/security/limits.d/30-disable-coredump.conf | sudo tee /etc/security/limits.d/30-disable-coredump.conf

# Setup dconf
umask 022
mkdir -p /etc/dconf/db/local.d/locks

unpriv curl --proxy http://127.0.0.1:8082 https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/dconf/db/local.d/locks/automount-disable | sudo tee /etc/dconf/db/local.d/locks/automount-disable
unpriv curl --proxy http://127.0.0.1:8082 https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/dconf/db/local.d/locks/privacy | sudo tee /etc/dconf/db/local.d/locks/privacy

unpriv curl --proxy http://127.0.0.1:8082 https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/dconf/db/local.d/adw-gtk3-dark | sudo tee /etc/dconf/db/local.d/adw-gtk3-dark
unpriv curl --proxy http://127.0.0.1:8082 https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/dconf/db/local.d/automount-disable | sudo tee /etc/dconf/db/local.d/automount-disable
unpriv curl --proxy http://127.0.0.1:8082 https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/dconf/db/local.d/button-layout | sudo tee /etc/dconf/db/local.d/button-layout
unpriv curl --proxy http://127.0.0.1:8082 https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/dconf/db/local.d/prefer-dark | sudo tee /etc/dconf/db/local.d/prefer-dark
unpriv curl --proxy http://127.0.0.1:8082 https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/dconf/db/local.d/privacy | sudo tee /etc/dconf/db/local.d/privacy
unpriv curl --proxy http://127.0.0.1:8082 https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/dconf/db/local.d/touchpad | sudo tee /etc/dconf/db/local.d/touchpad

sudo dconf update
umask 077

# Setup DNF
unpriv curl --proxy http://127.0.0.1:8082 https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/dnf/dnf.conf | sudo tee /etc/dnf/dnf.conf
sudo sed -i 's/^metalink=.*/&\&protocol=https/g' /etc/yum.repos.d/*

# Remove unnecessary stuff from the Qubes template
sudo dnf -y remove thunderbird httpd keepassxc rygel

# Remove firefox packages
sudo dnf -y remove fedora-bookmarks fedora-chromium-config firefox mozilla-filesystem

# Remove Network + hardware tools packages
sudo dnf -y remove '*cups' nmap-ncat nfs-utils nmap-ncat openssh-server net-snmp-libs net-tools opensc traceroute rsync tcpdump teamd geolite2* mtr dmidecode sgpio

# Remove support for some languages and spelling
sudo dnf -y remove ibus-typing-booster '*speech*' '*zhuyin*' '*pinyin*' '*m17n*' '*hangul*' '*anthy*' words

# Remove codec + image + printers
sudo dnf -y remove openh264 ImageMagick* sane* simple-scan

# Remove Active Directory + Sysadmin + reporting tools
sudo dnf -y remove 'sssd*' realmd cyrus-sasl-gssapi quota* dos2unix kpartx sos samba-client gvfs-smb

# Remove vm and virtual stuff
sudo dnf -y remove 'podman*' '*libvirt*' 'open-vm*' qemu-guest-agent 'hyperv*' spice-vdagent virtualbox-guest-additions vino xorg-x11-drv-vmware xorg-x11-drv-amdgpu

# Remove NetworkManager
sudo dnf -y remove NetworkManager-pptp-gnome NetworkManager-ssh-gnome NetworkManager-openconnect-gnome NetworkManager-openvpn-gnome NetworkManager-vpnc-gnome ppp* ModemManager

# Remove Gnome apps
sudo dnf remove -y chrome-gnome-shell eog gnome-photos gnome-connections gnome-tour gnome-themes-extra gnome-screenshot gnome-remote-desktop gnome-font-viewer gnome-calculator gnome-calendar gnome-contacts \
    gnome-maps gnome-weather gnome-logs gnome-boxes gnome-disk-utility gnome-clocks gnome-color-manager gnome-characters baobab totem \
    gnome-shell-extension-background-logo gnome-shell-extension-apps-menu gnome-shell-extension-launch-new-instance gnome-shell-extension-places-menu gnome-shell-extension-window-list \
    gnome-classic* gnome-user* gnome-text-editor loupe snapshot

# Remove apps
sudo dnf remove -y rhythmbox yelp evince libreoffice* cheese file-roller* mediawriter

# Remove other packages
# We deviate from the script in TommyTran732/Linux-Setup-Scripts here, as removing yajl will break qubes integration.
sudo dnf remove -y lvm2 rng-tools thermald '*perl*'

# Disable openh264 repo
sudo dnf config-manager --set-disabled fedora-cisco-openh264

# Update packages
sudo dnf -y upgrade

# Install custom packages
sudo dnf install qubes-ctap qubes-gpg-split adw-gtk3-theme gnome-console -y

# Flatpak update service
unpriv curl --proxy http://127.0.0.1:8082 https://raw.githubusercontent.com/TommyTran732/QubesOS-Scripts/main/etc/systemd/user/update-user-flatpaks.service | sudo tee /etc/systemd/user/update-user-flatpaks.service
unpriv curl --proxy http://127.0.0.1:8082 https://raw.githubusercontent.com/TommyTran732/QubesOS-Scripts/main/etc/systemd/user/update-user-flatpaks.timer | sudo tee /etc/systemd/user/update-user-flatpaks.timer

# Systemd hardening
sudo mkdir -p /etc/systemd/system/ModemManager.service.d
unpriv curl --proxy http://127.0.0.1:8082 https://raw.githubusercontent.com/divestedcg/Brace/master/brace/usr/lib/systemd/system/ModemManager.service.d/99-brace.conf | sudo tee /etc/systemd/system/ModemManager.service.d/99-brace.conf

# Setup hardened_malloc
#sudo dnf install 'https://divested.dev/rpm/fedora/divested-release-20231210-2.noarch.rpm' -y
#sudo sed -i 's/^metalink=.*/&?protocol=https/g' /etc/yum.repos.d/divested-release.repo
#sudo dnf config-manager --save --setopt=divested.includepkgs=divested-release,real-ucode,microcode_ctl,amd-ucode-firmware,hardened_malloc
#sudo dnf install hardened_malloc -y
#echo 'libhardened_malloc.so' | sudo tee /etc/ld.so.preload

# Setup networking
# We don't need the usual mac address randomization and stuff here, because this template is not used for sys-net

sudo mkdir -p /etc/systemd/system/NetworkManager.service.d
unpriv curl --proxy http://127.0.0.1:8082 https://gitlab.com/divested/brace/-/raw/master/brace/usr/lib/systemd/system/NetworkManager.service.d/99-brace.conf | sudo tee /etc/systemd/system/NetworkManager.service.d/99-brace.conf
sudo systemctl daemon-reload
sudo systemctl restart NetworkManager

# Fix desktop environmemt variable

echo 'XDG_CURRENT_DESKTOP=GNOME' >> /etc/environment