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#!/usr/bin/env bash
# config.sh - Configuration and argument handling for archangel installer
# Source this file after common.sh
#############################
# Global Config Variables
#############################
CONFIG_FILE=""
UNATTENDED=false
# These get populated by config file or interactive prompts.
# Optional fields carry their default value here so config.sh is the
# single source of truth — gather_input trusts what's loaded.
FILESYSTEM="zfs" # "zfs" or "btrfs"
LOCALE="en_US.UTF-8"
KEYMAP="us"
ENABLE_SSH="yes" # SSH with root login (default yes for headless)
NO_ENCRYPT="no" # Skip filesystem encryption (testing only)
# Required fields — installer errors out if any are still empty at install time.
HOSTNAME=""
TIMEZONE=""
SELECTED_DISKS=()
RAID_LEVEL=""
WIFI_SSID=""
WIFI_PASSWORD=""
ZFS_PASSPHRASE=""
LUKS_PASSPHRASE=""
ROOT_PASSWORD=""
#############################
# Argument Parsing
#############################
parse_args() {
while [[ $# -gt 0 ]]; do
case "$1" in
--config-file)
if [[ -n "$2" && ! "$2" =~ ^- ]]; then
CONFIG_FILE="$2"
shift 2
else
error "--config-file requires a path argument"
fi
;;
--color)
enable_color
shift
;;
--help|-h)
show_usage
exit 0
;;
*)
error "Unknown option: $1 (use --help for usage)"
;;
esac
done
}
show_usage() {
cat <<EOF
Usage: archangel [OPTIONS]
Arch Linux installer with ZFS/Btrfs support and snapshot management.
Options:
--config-file PATH Use config file for unattended installation
--color Enable colored output
--help, -h Show this help message
Without --config-file, runs in interactive mode.
See /root/archangel.conf.example for a config template.
EOF
}
#############################
# Config File Loading
#############################
load_config() {
local config_path="$1"
if [[ ! -f "$config_path" ]]; then
error "Config file not found: $config_path"
fi
info "Loading config from: $config_path"
# Source the config file (it's just key=value pairs)
# shellcheck disable=SC1090
source "$config_path"
# Convert DISKS from comma-separated string to array
if [[ -n "$DISKS" ]]; then
IFS=',' read -ra SELECTED_DISKS <<< "$DISKS"
fi
UNATTENDED=true
info "Running in unattended mode"
}
check_config() {
# Only use config when explicitly specified with --config-file
# This prevents accidental disk destruction from an unnoticed config file
if [[ -n "$CONFIG_FILE" ]]; then
load_config "$CONFIG_FILE"
fi
}
#############################
# Config Validation
#############################
validate_config() {
local errors=0
[[ -z "$HOSTNAME" ]] && { warn "HOSTNAME not set"; ((errors++)); }
[[ -z "$TIMEZONE" ]] && { warn "TIMEZONE not set"; ((errors++)); }
[[ ${#SELECTED_DISKS[@]} -eq 0 ]] && { warn "No disks selected"; ((errors++)); }
[[ -z "$ROOT_PASSWORD" ]] && { warn "ROOT_PASSWORD not set"; ((errors++)); }
# Validate disks exist
for disk in "${SELECTED_DISKS[@]}"; do
[[ -b "$disk" ]] || { warn "Disk not found: $disk"; ((errors++)); }
done
# Validate timezone
if [[ -n "$TIMEZONE" && ! -f "/usr/share/zoneinfo/$TIMEZONE" ]]; then
warn "Invalid timezone: $TIMEZONE"
((errors++))
fi
if [[ $errors -gt 0 ]]; then
error "Config validation failed with $errors error(s)"
fi
info "Config validation passed"
}
# Catches a typo in FILESYSTEM= from a config file before the install
# starts. Called from main() after check_config so a bad value never
# reaches gather_input or filesystem_preflight.
validate_filesystem() {
if [[ "$FILESYSTEM" != "zfs" && "$FILESYSTEM" != "btrfs" ]]; then
error "Invalid FILESYSTEM: $FILESYSTEM (must be 'zfs' or 'btrfs')"
fi
}
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