mirror of
https://github.com/tommytran732/Arch-Setup-Script
synced 2024-11-09 04:01:33 -05:00
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@ -4,7 +4,7 @@
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This is my installer for Arch Linux. It sets up a BTRFS system with encrypted `/boot` and full snapper support (both snapshotting and rollback work!). It also includes various system hardening configurations.
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The script was originally based off [easy-arch](https://github.com/classy-giraffe/easy-arch). However, it diverges substantially from the original project does not follow its development.
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The script is based on [easy-arch](https://github.com/classy-giraffe/easy-arch). However, it diverges substantially from the original project does not follow its development.
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Visit my Matrix group: https://invite.arcticfoxes.net/#/#tommy:arcticfoxes.net
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36
desktop_postinstall.sh
Normal file
36
desktop_postinstall.sh
Normal file
@ -0,0 +1,36 @@
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#!/bin/bash
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# Copyright (C) 2021-2024 Thien Tran
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may not
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# use this file except in compliance with the License. You may obtain a copy of
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# the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations under
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# the License.
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# Make sure secureboot is in setup mode before running this
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# Secure boot enrollment
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sudo sbctl enroll-keys
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sudo sbctl sign /boot/efi/EFI/GRUB/grubx64.efi
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# Setup Flatpak
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sudo flatpak override --system --nosocket=x11 --nosocket=fallback-x11 --nosocket=pulseaudio --nosocket=session-bus --nosocket=system-bus --unshare=network --unshare=ipc --nofilesystem=host:reset --nodevice=input --nodevice=shm --nodevice=all --no-talk-name=org.freedesktop.Flatpak --no-talk-name=org.freedesktop.systemd1 --no-talk-name=ca.desrt.dconf --no-talk-name=org.gnome.Shell.Extensions
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flatpak override --user --nosocket=x11 --nosocket=fallback-x11 --nosocket=pulseaudio --nosocket=session-bus --nosocket=system-bus --unshare=network --unshare=ipc --nofilesystem=host:reset --nodevice=input --nodevice=shm --nodevice=all --no-talk-name=org.freedesktop.Flatpak --no-talk-name=org.freedesktop.systemd1 --no-talk-name=ca.desrt.dconf --no-talk-name=org.gnome.Shell.Extensions
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flatpak remote-add --if-not-exists --user flathub https://dl.flathub.org/repo/flathub.flatpakrepo
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flatpak --user install org.gnome.Extensions com.github.tchx84.Flatseal org.gnome.Loupe -y
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flatpak --user override com.github.tchx84.Flatseal --filesystem=/var/lib/flatpak/app:ro --filesystem=xdg-data/flatpak/app:ro --filesystem=xdg-data/flatpak/overrides:create
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flatpak --user override org.gnome.Extensions --talk-name=org.gnome.Shell.Extensions
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flatpak update -y
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# Firewalld setup
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sudo firewall-cmd --set-default-zone=block
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sudo firewall-cmd --permanent --add-service=dhcpv6-client
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sudo firewall-cmd --reload
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sudo firewall-cmd --lockdown-on
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102
install.sh
102
install.sh
@ -38,29 +38,6 @@ install_mode_selector() {
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esac
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}
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# Selecting the kernel flavor to install.
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kernel_selector () {
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output 'List of kernels:'
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output '1) Stable — Vanilla Linux kernel and modules, with a few patches applied.'
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output '2) Hardened — A security-focused Linux kernel.'
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output '3) Longterm — Long-term support (LTS) Linux kernel and modules.'
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output '4) Zen Kernel — Optimized for desktop usage.'
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output 'Insert the number of your selection:'
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read -r choice
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case $choice in
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1 ) kernel=linux
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;;
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2 ) kernel=linux-hardened
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;;
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3 ) kernel=linux-lts
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;;
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4 ) kernel=linux-zen
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;;
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* ) output 'You did not enter a valid selection.'
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kernel_selector
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esac
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}
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luks_password_prompt () {
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output 'Enter your encryption password (the password will not be shown on the screen):'
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read -r -s luks_password
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@ -117,12 +94,16 @@ user_password_prompt () {
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}
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hostname_prompt (){
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output 'Enter your hostname:'
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read -r hostname
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if [ "${install_mode}" = 'server' ]; then
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output 'Enter your hostname:'
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read -r hostname
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if [ -z "${hostname}" ]; then
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output 'You need to enter a hostname.'
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hostname_prompt
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if [ -z "${hostname}" ]; then
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output 'You need to enter a hostname.'
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hostname_prompt
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fi
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else
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hostname='localhost'
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fi
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}
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@ -135,7 +116,6 @@ clear
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# Initial prompts
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install_mode_selector
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kernel_selector
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luks_password_prompt
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disk_prompt
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username_prompt
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@ -178,7 +158,7 @@ mkfs.fat -F 32 -s 2 "${ESP}" &>/dev/null
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## Creating a LUKS Container for the root partition.
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output 'Creating LUKS Container for the root partition.'
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echo -n "${luks_password}" | cryptsetup luksFormat --type luks1 ${cryptroot} -d - &>/dev/null
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echo -n "${luks_password}" | cryptsetup luksFormat --pbkdf pbkdf2 ${cryptroot} -d - &>/dev/null
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echo -n "${luks_password}" | cryptsetup open ${cryptroot} cryptroot -d -
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BTRFS='/dev/mapper/cryptroot'
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@ -284,10 +264,16 @@ fi
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## Pacstrap
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output 'Installing the base system (it may take a while).'
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output "You may see an error when mkinitcpio tries to generate a new initramfs."
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output "It is okay. The script will regenerate the initramfs later in the installation process."
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pacstrap /mnt apparmor base chrony efibootmgr firewalld grub grub-btrfs inotify-tools linux-firmware linux-hardened linux-lts "${microcode}" nano networkmanager reflector sbctl snapper sudo zram-generator
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if [ "${install_mode}" = 'desktop' ]; then
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pacstrap /mnt base "${kernel}" "${microcode}" apparmor chrony efibootmgr firewalld grub grub-btrfs inotify-tools linux-firmware nano networkmanager reflector sbctl snapper sudo zram-generator nautilus gdm gnome-console gnome-control-center pipewire-alsa pipewire-pulse pipewire-jack
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pacstrap /mnt nautilus gdm gnome-console gnome-control-center flatpak pipewire-alsa pipewire-pulse pipewire-jack
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elif [ "${install_mode}" = 'server' ]; then
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pacstrap /mnt base "${kernel}" "${microcode}" apparmor chrony efibootmgr firewalld grub grub-btrfs inotify-tools linux-firmware nano networkmanager reflector sbctl snapper sudo zram-generator openssh
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pacstrap /mnt openssh
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fi
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if [ "${virtualization}" = 'none' ]; then
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@ -346,14 +332,14 @@ sed -i 's/rootflags=subvol=${rootsubvol}//g' /mnt/etc/grub.d/20_linux_xen
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## Kernel hardening
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UUID=$(blkid -s UUID -o value "${cryptroot}")
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sed -i "s#quiet#rd.luks.name=${UUID}=cryptroot root=${BTRFS} mitigations=auto,nosmt spectre_v2=on spectre_bhi=on spec_store_bypass_disable=on tsx=off kvm.nx_huge_pages=force nosmt=force l1d_flush=on spec_rstack_overflow=safe-ret gather_data_sampling=force reg_file_data_sampling=on random.trust_bootloader=off random.trust_cpu=off intel_iommu=on amd_iommu=force_isolation efi=disable_early_pci_dma iommu=force iommu.passthrough=0 iommu.strict=1 slab_nomerge init_on_alloc=1 init_on_free=1 pti=on vsyscall=none ia32_emulation=0 page_alloc.shuffle=1 randomize_kstack_offset=on debugfs=off lockdown=confidentiality module.sig_enforce=1#g" /mnt/etc/default/grub
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sed -i "s#quiet#rd.luks.name=${UUID}=cryptroot root=${BTRFS} lsm=landlock,lockdown,yama,integrity,apparmor,bpf mitigations=auto,nosmt spectre_v2=on spectre_bhi=on spec_store_bypass_disable=on tsx=off kvm.nx_huge_pages=force nosmt=force l1d_flush=on spec_rstack_overflow=safe-ret gather_data_sampling=force reg_file_data_sampling=on random.trust_bootloader=off random.trust_cpu=off intel_iommu=on amd_iommu=force_isolation efi=disable_early_pci_dma iommu=force iommu.passthrough=0 iommu.strict=1 slab_nomerge init_on_alloc=1 init_on_free=1 pti=on vsyscall=none ia32_emulation=0 page_alloc.shuffle=1 randomize_kstack_offset=on debugfs=off lockdown=confidentiality module.sig_enforce=1#g" /mnt/etc/default/grub
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## Add keyfile to the initramfs to avoid double password.
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dd bs=512 count=4 if=/dev/random of=/mnt/cryptkey/.root.key iflag=fullblock &>/dev/null
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chmod 000 /mnt/cryptkey/.root.key &>/dev/null
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echo -n "${luks_password}" | cryptsetup luksAddKey /dev/disk/by-partlabel/cryptroot /mnt/cryptkey/.root.key -d -
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sed -i 's#FILES=()#FILES=(/cryptkey/.root.key)#g' /mnt/etc/mkinitcpio.conf
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sed -i "s#module.sig_enforce=1#module.sig_enforce=1 rd.luks.key=/cryptkey/.root.key#g" /mnt/etc/default/grub
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sed -i "s#module\.sig_enforce=1#module.sig_enforce=1 rd.luks.key=/cryptkey/.root.key#g" /mnt/etc/default/grub
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## Continue kernel hardening
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unpriv curl https://raw.githubusercontent.com/Kicksecure/security-misc/master/etc/modprobe.d/30_security-misc.conf | tee /mnt/etc/modprobe.d/30_security-misc.conf
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@ -377,14 +363,31 @@ sed -i 's/nullok//g' /mnt/etc/pam.d/system-auth
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## Disable coredump
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unpriv curl https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/security/limits.d/30-disable-coredump.conf | tee /mnt/etc/security/limits.d/30-disable-coredump.conf
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# Disable XWayland
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sudo mkdir -p /mnt/etc/systemd/user/org.gnome.Shell@wayland.service.d
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unpriv curl https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/systemd/user/org.gnome.Shell%40wayland.service.d/override.conf | sudo tee /mnt/etc/systemd/user/org.gnome.Shell@wayland.service.d/override.conf
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# Setup dconf
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mkdir -p /mnt/etc/dconf/db/local.d/locks
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unpriv curl https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/dconf/db/local.d/locks/automount-disable | tee /mnt/etc/dconf/db/local.d/locks/automount-disable
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unpriv curl https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/dconf/db/local.d/locks/privacy | tee /mnt/etc/dconf/db/local.d/locks/privacy
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unpriv curl https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/dconf/db/local.d/adw-gtk3-dark | tee /mnt/etc/dconf/db/local.d/adw-gtk3-dark
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unpriv curl https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/dconf/db/local.d/automount-disable | tee /mnt/etc/dconf/db/local.d/automount-disable
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unpriv curl https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/dconf/db/local.d/button-layout | tee /mnt/etc/dconf/db/local.d/button-layout
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unpriv curl https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/dconf/db/local.d/prefer-dark | tee /mnt/etc/dconf/db/local.d/prefer-dark
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unpriv curl https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/dconf/db/local.d/privacy | tee /mnt/etc/dconf/db/local.d/privacy
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unpriv curl https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/dconf/db/local.d/touchpad | tee /mnt/etc/dconf/db/local.d/touchpad
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## ZRAM configuration
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unpriv curl https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/systemd/zram-generator.conf | tee /mnt/etc/systemd/zram-generator.conf
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## Setup Networking
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if [ "${install_mode}" = "desktop" ]; then
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unpriv curl https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/NetworkManager/conf.d/00-macrandomize.conf | tee /mnt/etc/NetworkManager/conf.d/00-macrandomize.conf
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unpriv curl https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/NetworkManager/conf.d/01-transient-hostname.conf | tee /mnt/etc/NetworkManager/conf.d/01-transient-hostname.conf
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unpriv curl https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/NetworkManager/conf.d/00-macrandomize.conf | tee /mnt/etc/NetworkManager/conf.d/00-macrandomize.conf
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unpriv curl https://raw.githubusercontent.com/TommyTran732/Linux-Setup-Scripts/main/etc/NetworkManager/conf.d/01-transient-hostname.conf | tee /mnt/etc/NetworkManager/conf.d/01-transient-hostname.conf
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fi
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unpriv curl https://gitlab.com/divested/brace/-/raw/master/brace/usr/lib/systemd/system/NetworkManager.service.d/99-brace.conf | tee /mnt/etc/systemd/system/NetworkManager.service.d/99-brace.conf
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@ -400,32 +403,36 @@ arch-chroot /mnt /bin/bash -e <<EOF
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hwclock --systohc
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# Generating locales.my keys aren't even on
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echo "Generating locales."
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output "Generating locales."
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locale-gen
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# Create SecureBoot keys. This isn't strictly necessary, but certain things like linux-hardened preset expects it and mkinitcpio will fail without it, sooo...
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sbctl create-keys
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# Generating a new initramfs.
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echo "Creating a new initramfs."
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output "Creating a new initramfs."
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chmod 600 /boot/initramfs-linux*
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mkinitcpio -P
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# Installing GRUB.
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echo "Installing GRUB on /boot."
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output "Installing GRUB on /boot."
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grub-install --target=x86_64-efi --efi-directory=/boot/efi --bootloader-id=GRUB --modules="normal test efi_gop efi_uga search echo linux all_video gfxmenu gfxterm_background gfxterm_menu gfxterm loadenv configfile gzio part_gpt cryptodisk luks gcry_rijndael gcry_sha256 btrfs" --disable-shim-lock
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# Creating grub config file.
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echo "Creating GRUB config file."
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output "Creating GRUB config file."
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grub-mkconfig -o /boot/grub/grub.cfg
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# Adding user with sudo privilege
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if [ -n "$username" ]; then
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echo "Adding $username with root privilege."
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output "Adding $username with root privilege."
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useradd -m $username
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usermod -aG wheel $username
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fi
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# Setting up dconf
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output "Setting up dconf."
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dconf update
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# Snapper configuration
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umount /.snapshots
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rm -r /.snapshots
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@ -442,11 +449,6 @@ EOF
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## Give wheel user sudo access.
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sed -i 's/# \(%wheel ALL=(ALL\(:ALL\|\)) ALL\)/\1/g' /mnt/etc/sudoers
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## Enabling openssh server
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if [ "${install_mode}" = 'server' ]; then
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systemctl enable sshd --root=/mnt
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fi
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## Enable services
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systemctl enable apparmor --root=/mnt
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systemctl enable chronyd --root=/mnt
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@ -461,6 +463,14 @@ systemctl enable snapper-cleanup.timer --root=/mnt
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systemctl enable systemd-oomd --root=/mnt
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systemctl disable systemd-timesyncd --root=/mnt
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if [ "${install_mode}" = 'desktop' ]; then
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systemctl enable gdm --root=/mnt
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fi
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if [ "${install_mode}" = 'server' ]; then
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systemctl enable sshd --root=/mnt
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fi
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## Set umask to 077.
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sudo sed -i 's/^UMASK.*/UMASK 077/g' /mnt/etc/login.defs
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sudo sed -i 's/^HOME_MODE/#HOME_MODE/g' /mnt/etc/login.defs
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Block a user