feat(iso): Allow supplementary password/settings file (#9)

setup.sh

@@ -256,8 +256,14 @@ function no_zpool_exists () {
 }
 
 function set_zpool_password () {
+    local zpool_password
+    if [[ "${ARCHZBM_ZPOOL_PASSWORD}" ]]; then
+        zpool_password="${ARCHZBM_ZPOOL_PASSWORD}"
+    else
+        zpool_password='password'
+    fi
     # May or may not have a newline at the end, ZFS doesn't care
-    printf -- '%s' 'password' > '/etc/zfs/'"${zpool_name}"'.key'
+    printf -- '%s' "${zpool_password}" > '/etc/zfs/'"${zpool_name}"'.key'
     chmod '000' '/etc/zfs/'"${zpool_name}"'.key'
 }
 
@@ -319,6 +325,18 @@ function export_pool () {
     zpool export "${zpool_name}"
 }
 
+function load_settings_file () {
+    local working_dir settings_file settings_abs
+    working_dir="$(pwd)"
+    settings_file='archzbm_settings.env'
+    settings_abs="${working_dir}"'/'"${settings_file}"
+    if [[ -r "${settings_abs}" ]]; then
+        set -a
+        source "${settings_abs}"
+        set +a
+    fi
+}
+
 function setup_zpool () {
     #1.8
     local drive_by_id
@@ -764,7 +782,13 @@ function install_os_in_chroot () {
 
 function set_root_pw () {
     #3.2
-    printf -- '%s\n' 'root:password' | chpasswd --crypt-method 'SHA512' --root '/mnt'
+    local root_password
+    if [[ "${ARCHZBM_ROOT_PASSWORD}" ]]; then
+        root_password="${ARCHZBM_ROOT_PASSWORD}"
+    else
+        root_password='password'
+    fi
+    printf -- '%s\n' 'root:'"${root_password}" | chpasswd --crypt-method 'SHA512' --root '/mnt'
 }
 
 function configure_networking () {
@@ -893,6 +917,7 @@ function main () {
         install_pkgs 'jq'                       #1.5
         install_zfs                             #1.6
         uefi_or_bios                            #1.7
+        load_settings_file
         setup_zpool                             #1.8
         mount_system                            #1.9
         copy_zpool_cache                        #1.10