feat(iso): Add setup function to generate answer file (#21)

setup.sh

@@ -36,6 +36,194 @@ trap '[ "$?" -ne 77 ] || exit 77' ERR
 
 declare zpool_drive efi_drive boot_drive part_schema
 
+function setup_env_vars () {
+    printf -- '%s\n' \
+        'We will go over a series of questions to create an answer file with' \
+        'options you want the script to use.' \
+        '' \
+        'Current working directory is:'\
+        "$(pwd)" \
+        '' \
+        'After we'"'"'re done answer file will be written to current working dir:' \
+        './'"${settings_file}" \
+        '' \
+        'Press <Ctrl>+C to abort this process. No answer file will' \
+        'be written to ./'"${settings_file}"' if you abort the script.' \
+        '' \
+        'When done rerun the same command you just did without '"'"'setup'"'"' argument.' \
+        ''
+    read -u3 -n 1 -s -r -p "Press any key to begin questionnaire"
+    echo
+    echo '----------------------------------------'
+    echo
+
+    echo "Do you want compressed datasets?"
+    select arg_compressed in "Compressed" "Uncompressed"; do
+        case "${arg_compressed}" in
+            Compressed)
+                break
+                ;;
+            Uncompressed)
+                ARCHZBM_ZFSPROPS_NO_COMPRESSION='true'
+                break
+                ;;
+        esac
+    done <&3 && echo
+
+    echo "Do you want encrypted datasets?"
+    select arg_encrypted in "Encrypted" "Unencrypted"; do
+        case "${arg_encrypted}" in
+            Encrypted)
+                break
+                ;;
+            Unencrypted)
+                ARCHZBM_ZFSPROPS_NO_ENCRYPTION='true'
+                break
+                ;;
+        esac
+    done <&3 && echo
+
+    if [[ "${arg_encrypted}" = 'Encrypted' ]]; then
+        echo "Do you want a custom dataset decryption password?"
+        select arg_custom_dataset_pw in "Yes" "No"; do
+            case "${arg_custom_dataset_pw}" in
+                Yes)
+                    want_custom_dataset_pw='true'
+                    break
+                    ;;
+                No)
+                    break
+                    ;;
+            esac
+        done <&3 && echo
+
+        if [[ "${want_custom_dataset_pw}" ]]; then
+            read -u3 -p 'Please type password, confirm with <Enter>: ' -s ARCHZBM_ZPOOL_PASSWORD
+            echo
+            echo
+        fi
+    fi
+
+    echo "Do you want a custom 'root' user password?"
+    select arg_custom_root_pw in "Yes" "No"; do
+        case "${arg_custom_root_pw}" in
+            Yes)
+                want_custom_root_pw='true'
+                break
+                ;;
+            No)
+                break
+                ;;
+        esac
+    done <&3 && echo
+
+    if [[ "${want_custom_root_pw}" ]]; then
+        read -u3 -p 'Please type password, confirm with <Enter>: ' -s ARCHZBM_ROOT_PASSWORD
+        echo
+        echo
+    fi
+
+    echo "Do you want an SSH daemon in ZFSBootMenu?"
+    select arg_ssh_in_zbm in "Yes" "No"; do
+        case "${arg_ssh_in_zbm}" in
+            Yes)
+                want_ssh_in_zbm='true'
+                break
+                ;;
+            No)
+                break
+                ;;
+        esac
+    done <&3 && echo
+
+    if [[ "${want_ssh_in_zbm}" ]]; then
+        echo "How do you want to assign an IP address in ZFSBootMenu?"
+        select arg_ip_autoconf_method in "Statically" "Dynamically, DHCP" "Dynamically, BOOTP" "Dynamically, RARP"; do
+            case "${arg_ip_autoconf_method}" in
+                'Statically')
+                    ARCHZBM_NET_AUTOCONF='none'
+                    break
+                    ;;
+                'Dynamically, DHCP')
+                    ARCHZBM_NET_AUTOCONF='dhcp'
+                    break
+                    ;;
+                'Dynamically, BOOTP')
+                    ARCHZBM_NET_AUTOCONF='bootp'
+                    break
+                    ;;
+                'Dynamically, RARP')
+                    ARCHZBM_NET_AUTOCONF='rarp'
+                    break
+                    ;;
+            esac
+        done <&3 && echo
+
+        read -u3 -p 'Which device to configure (eth0 is a good guess): ' ARCHZBM_NET_DEVICE
+        echo
+
+        if [[ "${arg_ip_autoconf_method}" = 'Statically' ]]; then
+            read -u3 -p 'Interface IP address: ' ARCHZBM_NET_CLIENT_IP
+            echo
+
+            read -u3 -p 'Netmask: ' ARCHZBM_NET_NETMASK
+            echo
+
+            read -u3 -p 'Gateway IP address: ' ARCHZBM_NET_GATEWAY_IP
+            echo
+        fi
+
+        echo "Do you want a custom SSH listening port?"
+        select arg_custom_ssh_port in "Yes (let me specify)" "No (keep port 22)"; do
+            case "${arg_custom_ssh_port}" in
+                'Yes (let me specify)')
+                    want_custom_ssh_port='true'
+                    break
+                    ;;
+                'No (keep port 22)')
+                    break
+                    ;;
+            esac
+        done <&3 && echo
+
+        if [[ "${want_custom_ssh_port}" ]]; then
+            read -u3 -p 'Please type SSH port, confirm with <Enter>: ' ARCHZBM_SSH_PORT
+            echo
+        fi
+
+        echo "Do you want the SSH daemon to use a custom keepalive send interval?"
+        select arg_custom_ssh_keepalive_intvl in "Yes (let me specify)" "No (keep 1)"; do
+            case "${arg_custom_ssh_keepalive_intvl}" in
+                'Yes (let me specify)')
+                    want_custom_keepalive_intvl='true'
+                    break
+                    ;;
+                'No (keep 1)')
+                    break
+                    ;;
+            esac
+        done <&3 && echo
+
+        if [[ "${want_custom_keepalive_intvl}" ]]; then
+            read -u3 -p 'Please type server keepalive send interval, confirm with <Enter>: ' ARCHZBM_SSH_KEEPALIVE_INTVL
+            echo
+        fi
+
+        if [[ "${want_custom_keepalive_intvl}" ]]; then
+            read -u3 -p 'Please type SSH pub keys on one line separated by double-commas (,,) and confirm with <Enter>: ' ARCHZBM_SSH_AUTH_KEYS
+            echo
+        fi
+    fi
+
+    for env_var in 'ARCHZBM_ZFSPROPS_NO_COMPRESSION' 'ARCHZBM_ZFSPROPS_NO_ENCRYPTION' 'ARCHZBM_ZPOOL_PASSWORD' 'ARCHZBM_ROOT_PASSWORD' 'ARCHZBM_NET_AUTOCONF' 'ARCHZBM_NET_DEVICE' 'ARCHZBM_NET_CLIENT_IP' 'ARCHZBM_NET_NETMASK' 'ARCHZBM_NET_GATEWAY_IP' 'ARCHZBM_SSH_PORT' 'ARCHZBM_SSH_KEEPALIVE_INTVL' 'ARCHZBM_SSH_AUTH_KEYS'; do
+        if [[ "${!env_var}" ]]; then
+            printf -- '%s='"'"'%s'"'"'\n' \
+                "${env_var}" "${!env_var}" \
+                >> "${settings_file}"
+        fi
+    done
+}
+
 function arg_parse () {
     [[ "${1}" ]] && while :; do
         case "${1}" in