Add dry run, sanitize bash syntax

This commit is contained in:
ABelliqueux 2022-10-30 14:46:08 +01:00
parent 2ecfc3597f
commit 713a1eef79
1 changed files with 184 additions and 123 deletions

View File

@ -1,47 +1,59 @@
#!/usr/bin/env bash
#
# pilpil client installer v0.1
#
# https://sharats.me/posts/shell-script-best-practices/
set -o errexit
set -o nounset
set -o pipefail
if [[ "${TRACE-0}" == "1" ]]; then set -o xtrace; fi
if [[ "${TRACE-0}" == "1" ]]; then
set -o xtrace
fi
# Change to script dir
cd "$(dirname "$0")"
#
if [[ "${1-}" =~ ^-*h(elp)?$ ]]; then
echo 'Usage: ./pilpil-server.sh path_to_device
This is an awesome bash script to make your life better.
'
exit
fi
# Options
# Device block to write on
# Colored output
#~ set +x
bold=$(tput bold)
function red(){
echo -e "${bold}\x1B[31m$1 \x1B[0m"
if [ ! -z "${2}" ]; then
if [ ! -z "${2-}" ]; then
echo -e "\x1B[31m $($2) \x1B[0m"
fi
}
function green(){
echo -e "${bold}\x1B[32m$1 \x1B[0m"
if [ ! -z "${2}" ]; then
if [ ! -z "${2-}" ]; then
echo -e "\x1B[32m $($2) \x1B[0m"
fi
}
function yellow(){
echo -e "${bold}\x1B[33m$1 \x1B[0m"
if [ ! -z "${2}" ]; then
if [ ! -z "${2-}" ]; then
echo -e "\x1B[33m $($2) \x1B[0m"
fi
}
SDCARD=$1
# Display help if -h(elpf) used
if [[ "${1-}" =~ ^-*h(elp)?$ ]]; then
echo 'Usage: ./pilpil-server.sh path_to_device
This script will setup as much pilpil-clients as needed.
'
exit
fi
# Set dry run if -d(ry) used
if [[ "${1-}" =~ ^-*d(ry)?$ ]]; then
DRY_RUN=1
yellow "!!! Running in dry mode. No modifications will be made.\n"
fi
# Options
# Device block to write on
if [[ ! "$DRY_RUN" ]]; then
SDCARD="${1-}"
else
SDCARD="${2-}"
fi
# TODO : accomodate for devices block with name mmcblk0p1|p2
if [[ "$SDCARD" == "" ]] || [[ ! -e "$SDCARD" ]]
then
@ -50,14 +62,12 @@ then
fi
DD_BS="128K"
DISK_IMAGE="$HOME/niels/imgs/2022-10-25-pilpil-WIP.img.xz"
if [[ ! -f "$DISK_IMAGE" ]]
then
if [[ ! -f "$DISK_IMAGE" ]]; then
red "Disk image not found, aborting..." >&2
exit 0
fi
CONFIG_DIR="$HOME/niels/pilpil-server"
if [[ ! -d "$CONFIG_DIR" ]]
then
if [[ ! -d "$CONFIG_DIR" ]]; then
red "Config directory not found, aborting..." >&2
exit 0
fi
@ -67,8 +77,7 @@ BOOT_MOUNT="/run/media/$USER/boot"
ROOTFS_MOUNT="/run/media/$USER/rootfs"
#~ LOCAL_MEDIA_DIR="$HOME/Videos"
LOCAL_MEDIA_DIR="$HOME/niels/medias"
if [[ ! -d "$LOCAL_MEDIA_DIR" ]]
then
if [[ ! -d "$LOCAL_MEDIA_DIR" ]]; then
red "Medias directory not found, aborting..." >&2
exit 0
fi
@ -88,29 +97,42 @@ CHAN="802-11-wireless.channel 1"
#
# 0. Create AP connection
#
# If connection exists, delete it
nmcli con delete $SSID
nmcli con add type wifi ifname $IFW con-name $SSID autoconnect yes ssid $SSID
nmcli con modify $SSID 802-11-wireless.mode ap 802-11-wireless.band $BAND $CHAN $HIDE ipv4.method shared
nmcli con modify $SSID wifi-sec.key-mgmt wpa-psk
nmcli con modify $SSID 802-11-wireless-security.proto rsn
nmcli con modify $SSID 802-11-wireless-security.pairwise ccmp
nmcli con modify $SSID wifi-sec.psk $PASSWD
green " * Creating hotspot connection for NetworkManager \n"
if [[ ! "$DRY_RUN" ]]; then
# If connection exists, delete it
nmcli con delete $SSID
nmcli con add type wifi ifname $IFW con-name $SSID autoconnect yes ssid $SSID
nmcli con modify $SSID 802-11-wireless.mode ap 802-11-wireless.band "${BAND-}" "${CHAN-}" "${HIDE-}" ipv4.method shared
nmcli con modify $SSID wifi-sec.key-mgmt wpa-psk
nmcli con modify $SSID 802-11-wireless-security.proto rsn
nmcli con modify $SSID 802-11-wireless-security.pairwise ccmp
nmcli con modify $SSID wifi-sec.psk $PASSWD
fi
# 0.a set IP range on server
echo -e "Setting IP range $IP_RANGE/24 in /etc/NetworkManager/system-connections/$SSID.nmconnection ... \n"
sudo sed -i "/method=shared/a address1=$IP_RANGE/24, $IP_RANGE" /etc/NetworkManager/system-connections/$SSID.nmconnection
# Remove existing leases
sudo rm /var/lib/NetworkManager/dnsmasq-$IFW.leases
sudo systemctl restart NetworkManager
nmcli radio wifi on
nmcli con up $SSID
green " * Setting IP range $IP_RANGE/24 in /etc/NetworkManager/system-connections/$SSID.nmconnection ... \n"
if [[ ! "$DRY_RUN" ]]; then
sudo sed -i "/method=shared/a address1=$IP_RANGE/24, $IP_RANGE" /etc/NetworkManager/system-connections/$SSID.nmconnection
# Remove existing leases
sudo rm /var/lib/NetworkManager/dnsmasq-$IFW.leases
# restart NM
sudo systemctl restart NetworkManager
# Turn hotspot on
nmcli radio wifi on
nmcli con up $SSID
fi
# 0.b ask for number of clients
# This will be used to determine static IP
yellow "Nombre de clients à configurer : "
read -n 4 CLIENT_NUMBER
# Check input
if [[ ! "${CLIENT_NUMBER}" =~ ^[0-9]+$ ]]; then
red "\nInput was not a number, aborting.\n"
exit 0
fi
if [[ "${CLIENT_NUMBER}" -lt 1 ]]; then
red "\nInput was 0, nothing to do.\n"
exit 0
fi
green "Got $CLIENT_NUMBER...\n"
# For some reason networkmanager finds it clever to offer only IPs in range 10-255 even when asked for a /24, /28, etc...
# So IPs start at 10
@ -118,36 +140,39 @@ green "Got $CLIENT_NUMBER...\n"
#~ IP=$(echo $IP_RANGE | awk -F. '{print $4}')
FIRST=1
IP=10
echo -e "First IP is $(($RANGE_START)) ...\n"
#~ echo -e "First IP is $(($RANGE_START)) ...\n"
# Remove IP's last byte
IP_RANGE_3B=$(echo $IP_RANGE | awk -F. '{print $1"."$2"."$3"."}')
echo -e "First IP is $IP_RANGE_3B$IP ...\n"
# Generate SSL cert with IPs in IP_RANGE
IP_CNT=$IP
IP_ARRAY=()
while [[ "$IP_CNT" -lt $(($CLIENT_NUMBER+$IP)) ]]
while [[ "$IP_CNT" -lt $(("${CLIENT_NUMBER-}"+"${IP-}")) ]]
do
IP_ARRAY+=("IP:$IP_RANGE_3B$IP_CNT")
((IP_CNT++))
done
# Convert array to string
HOST_LIST="$(IFS=","; echo "${IP_ARRAY[*]}")"
yellow "Got host list : $HOST_LIST \n"
green "Got host list : ${HOST_LIST-} \n"
# 5. Generate valid ssl cert/key for every IP in range
# https://unix.stackexchange.com/questions/104171/create-ssl-certificate-non-interactively
yellow "Generating SSL crt/key for $HOST_LIST...\n"
openssl req -new -newkey rsa:4096 -days 1825 -nodes -x509 \
-subj "/C=/ST=Denial/L=/O=/CN=$IP_RANGE$FIRST" \
-addext "subjectAltName=$HOST_LIST" \
-keyout "$CONFIG_DIR/selfCA.key" -out "$CONFIG_DIR/selfCA.crt"
#sudo openssl req -x509 -nodes -days 3650 -newkey rsa:2048 -keyout "$ROOTFS_MOUNT/etc/ssl/private/nginx-selfsigned.key" -out "$ROOTFS_MOUNT/etc/ssl/certs/nginx-selfsigned.crt"
green "Generating SSL crt/key for $HOST_LIST...\n"
if [[ ! "$DRY_RUN" ]]; then
openssl req -new -newkey rsa:4096 -days 1825 -nodes -x509 \
-subj "/C=/ST=Denial/L=/O=/CN=$IP_RANGE$FIRST" \
-addext "subjectAltName=$HOST_LIST" \
-keyout "$CONFIG_DIR/selfCA.key" -out "$CONFIG_DIR/selfCA.crt"
#sudo openssl req -x509 -nodes -days 3650 -newkey rsa:2048 -keyout "$ROOTFS_MOUNT/etc/ssl/private/nginx-selfsigned.key" -out "$ROOTFS_MOUNT/etc/ssl/certs/nginx-selfsigned.crt"
fi
# Proceed with each host
for HOST in "${IP_ARRAY[@]}"
do
HOST=$(echo $HOST | awk -F: '{print $2}')
HOST_NAME="pilpil-$(echo $HOST | awk -F. '{print $4}')"
# 1. Copy img to sd
green "Operation 1/13 : Imaging $SDCARD with the file $DISK_IMAGE ...\n"
green "1/14 : Imaging $SDCARD with the file $DISK_IMAGE ...\n"
red "Are you sure you want to ERASE THE CONTENT of $SDCARD ? Type uppercase 'yes' to confirm."
read -n 4 GO_DD
if [[ "$GO_DD" != "YES" ]]
@ -156,49 +181,70 @@ do
break
fi
red "Received answer $GO_DD. Running dd on $SDCARD in 5 seconds."
sleep 5
if [[ ! "$DRY_RUN" ]]; then
sleep 5
fi
GO_DD=0
# unmount / remount new filesystem
green "Unmounting $BOOT_MOUNT and $ROOTFS_MOUNT ...\n"
umount $BOOT_MOUNT
umount $ROOTFS_MOUNT
xzcat "$DISK_IMAGE" | sudo dd of=$SDCARD bs="$DD_BS" oflag=dsync status=progress && sync
green "Operation 3/13 : Remounting $BOOT_MOUNT and $ROOTFS_MOUNT ...\n"
green "2/14 : Unmounting $BOOT_MOUNT and $ROOTFS_MOUNT ...\n"
if [[ ! "$DRY_RUN" ]]; then
umount $BOOT_MOUNT
umount $ROOTFS_MOUNT
xzcat "$DISK_IMAGE" | sudo dd of=$SDCARD bs="$DD_BS" oflag=dsync status=progress && sync
fi
green "3/14 : Remounting $BOOT_MOUNT and $ROOTFS_MOUNT ...\n"
echo "Remounting..."
sleep 1
systemctl --user restart gvfs-udisks2-volume-monitor
sleep 3
green "Operation 4/13 : Changing hostname to $HOST_NAME ...\n"
# Change hostname
echo "$HOST_NAME" | sudo tee "$ROOTFS_MOUNT/etc/hostname"
# Reflect that in /etc/hosts
sudo sed -i "$ d" "$ROOTFS_MOUNT/etc/hosts"
echo -e "127.0.1.1\t$HOST_NAME" | sudo tee -a "$ROOTFS_MOUNT/etc/hosts"
if [[ ! "$DRY_RUN" ]]; then
sleep 1
systemctl --user restart gvfs-udisks2-volume-monitor
sleep 3
fi
green "4/14 : Changing hostname to $HOST_NAME in $ROOTFS_MOUNT/etc/hostname and $ROOTFS_MOUNT/etc/hosts ...\n"
if [[ ! "$DRY_RUN" ]]; then
# Change hostname
echo "$HOST_NAME" | sudo tee "$ROOTFS_MOUNT/etc/hostname"
# Reflect that in /etc/hosts
sudo sed -i "$d" "$ROOTFS_MOUNT/etc/hosts"
echo -e "127.0.1.1\t$HOST_NAME" | sudo tee -a "$ROOTFS_MOUNT/etc/hosts"
fi
## Enable SSH
green "Operation 5/13 : Enabling SSH server on boot ...\n"
touch "$BOOT_MOUNT/ssh"
sync
green "5/14 : Enabling SSH server on boot : $BOOT_MOUNT/ssh ...\n"
if [[ ! "$DRY_RUN" ]]; then
touch "$BOOT_MOUNT/ssh"
sync
fi
## Generate SSH private/public key and install it - Disable passwd login
green "Operation 6/13 : Generating private/public SSH key as $HOME/.ssh/$HOST_NAME ...\n"
ssh-keygen -t ed25519 -f "$HOME/.ssh/$HOST_NAME" -N ""
green "6/14 : Generating private/public SSH key as $HOME/.ssh/$HOST_NAME ...\n"
if [[ ! "$DRY_RUN" ]]; then
ssh-keygen -t ed25519 -f "$HOME/.ssh/$HOST_NAME" -N ""
fi
red "New SSH key pair generated as $HOME/.ssh/$HOST_NAME. Add to ~/.ssh/config ? (y/n)"
read -n 2 ADD_SSH_CONF
if [[ "$ADD_SSH_CONF" == "y" ]]
then
# Add to ~/.ssh/config
echo -e "\nHost $HOST_NAME\n\tHostname $HOST\n\tIdentityFile ~/.ssh/$HOST_NAME\n\tUser $PI_USER" | tee -a "$HOME/.ssh/config"
if [[ "$ADD_SSH_CONF" == "y" ]];then
green "Adding $HOST_NAME with ip $HOST in $HOME/.ssh/config"
if [[ ! "$DRY_RUN" ]]; then
# Add to ~/.ssh/config
echo -e "\nHost $HOST_NAME\n\tHostname $HOST\n\tIdentityFile ~/.ssh/$HOST_NAME\n\tUser $PI_USER" | tee -a "$HOME/.ssh/config"
fi
else
yellow "\nAnswer was different from 'y', skipping..."
fi
# Copy public key to rpi
green "Operation 7/13 : Installing public SSH key $HOME/.ssh/$HOST.pub in $ROOTFS_MOUNT/home/$PI_USER/.ssh/authorized_keys...\n"
sudo cp "$HOME/.ssh/$HOST_NAME.pub" "$ROOTFS_MOUNT/home/$PI_USER/.ssh/authorized_keys"
sync
green "7/14 : Installing public SSH key $HOME/.ssh/$HOST.pub in $ROOTFS_MOUNT/home/$PI_USER/.ssh/authorized_keys...\n"
if [[ ! "$DRY_RUN" ]]; then
sudo cp "$HOME/.ssh/$HOST_NAME.pub" "$ROOTFS_MOUNT/home/$PI_USER/.ssh/authorized_keys"
sync
fi
# Disable PW login
green "Operation 8/13 : Disabling SSH password based login in $ROOTFS_MOUNT/etc/ssh/sshd_config ...\n"
echo -e "PasswordAuthentication no\nChallengeResponseAuthentication no\nUsePAM no" | sudo tee -a "$ROOTFS_MOUNT/etc/ssh/sshd_config"
sync
green "8/14 : Disabling SSH password based login in $ROOTFS_MOUNT/etc/ssh/sshd_config ...\n"
if [[ ! "$DRY_RUN" ]]; then
echo -e "PasswordAuthentication no\nChallengeResponseAuthentication no\nUsePAM no" | sudo tee -a "$ROOTFS_MOUNT/etc/ssh/sshd_config"
sync
fi
# 3. Configure wifi with static IP
green "Operation 9/13 : Configuring wireless connection to $SSID with pw $PASSWD : ...\n"
echo "ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev
green "9/14 : Configuring wireless connection to $SSID with pw $PASSWD : ...\n"
if [[ ! "$DRY_RUN" ]]; then
echo "ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev
update_config=1
country=FR
@ -212,50 +258,65 @@ network={
# https://fr.wikipedia.org/wiki/Liste_des_canaux_Wi-Fi#Bande_2,4_GHz
# scan_freq=2412 2437 2462
}" | sudo tee "$ROOTFS_MOUNT/etc/wpa_supplicant/wpa_supplicant.conf"
sync
# Request specific IP to dhcp server
green "Operation 10/13 : Setting static IP $HOST in $ROOTFS_MOUNT/etc/dhcpcd.conf...\n"
echo -e "interface wlan0\nrequest $HOST" | sudo tee -a "$ROOTFS_MOUNT/etc/dhcpcd.conf"
sync
# 5. Install previously generated SSL key/crt
#sudo openssl req -x509 -nodes -days 3650 -newkey rsa:2048 -keyout "$ROOTFS_MOUNT/etc/ssl/private/nginx-selfsigned.key" -out "$ROOTFS_MOUNT/etc/ssl/certs/nginx-selfsigned.crt"
green "Operation 11/13 : Installing public SSH key $CONFIG_DIR/selfCA.crt in $ROOTFS_MOUNT/etc/ssl/certs/ ...\n"
sudo cp "$CONFIG_DIR/selfCA.crt" "$ROOTFS_MOUNT/etc/ssl/certs/nginx-selfsigned.crt"
sudo cp "$CONFIG_DIR/selfCA.key" "$ROOTFS_MOUNT/etc/ssl/private/nginx-selfsigned.key"
sync
#~ Change VLC/pilpil http auth secret
sed -i "s:secret:$HTTP_SECRET:g" "$CONFIG_DIR/pilpil-server.toml"
sed -i "s:secret:$HTTP_SECRET:g" "$ROOTFS_MOUNT/home/pil/.config/systemd/user/vlc.service"
sed -i "s:secret:$HTTP_SECRET:g" "$ROOTFS_MOUNT/home/pil/pilpil-client/defaults.toml"
#~ # 6. Copy medias
green "Operation 12/13 : Syncing media folder $LOCAL_MEDIA_DIR/ with $REMOTE_MEDIA_DIR/ \n"
# Remove filler file
if [[ -f "$REMOTE_MEDIA_DIR/remove_me" ]]
then
sudo rm "$REMOTE_MEDIA_DIR/remove_me"
fi
# Get available space on rootfs
ROOTFS_AVAILABLE_SPACE=$(df -t ext4 -P $ROOTFS_MOUNT | tail -1 | awk '{print $4}')
# Get Media folder size
MEDIA_SIZE=$(du -c $LOCAL_MEDIA_DIR | tail -1 | awk '{print $1}')
# Only copy files if enough space available
if [[ "$MEDIA_SIZE" -lt "$ROOTFS_AVAILABLE_SPACE" ]]
then
USER_ID=$( cat "$ROOTFS_MOUNT/etc/passwd" | grep $PI_USER | awk -F: '{print $3}' )
GROUP_ID=$( cat "$ROOTFS_MOUNT/etc/passwd" | grep $PI_USER | awk -F: '{print $4}' )
sudo cp "$LOCAL_MEDIA_DIR/"* "$REMOTE_MEDIA_DIR/"
sudo chown -R $USER_ID:$GROUP_ID "$REMOTE_MEDIA_DIR"
sync
else
red "Not enough space on $ROOTFS_MOUNT, skipping..."
fi
# Request specific IP to dhcp server
green "10/14 : Setting static IP $HOST in $ROOTFS_MOUNT/etc/dhcpcd.conf...\n"
if [[ ! "$DRY_RUN" ]]; then
echo -e "interface wlan0\nrequest $HOST" | sudo tee -a "$ROOTFS_MOUNT/etc/dhcpcd.conf"
sync
fi
# 5. Install previously generated SSL key/crt
green "11/14 : Installing SSL : $CONFIG_DIR/selfCA.crt and $CONFIG_DIR/selfCA.key in $ROOTFS_MOUNT/etc/ssl/certs/ and $ROOTFS_MOUNT/etc/ssl/private/nginx-selfsigned.key...\n"
if [[ ! "$DRY_RUN" ]]; then
sudo cp "$CONFIG_DIR/selfCA.crt" "$ROOTFS_MOUNT/etc/ssl/certs/nginx-selfsigned.crt"
sudo cp "$CONFIG_DIR/selfCA.key" "$ROOTFS_MOUNT/etc/ssl/private/nginx-selfsigned.key"
sync
fi
green "12/14 : Installing http auth secrets in $CONFIG_DIR/pilpil-server.toml, $ROOTFS_MOUNT/home/pil/.config/systemd/user/vlc.service and $ROOTFS_MOUNT/home/pil/pilpil-client/defaults.toml...\n"
if [[ ! "$DRY_RUN" ]]; then
#~ Change VLC/pilpil http auth secret
sed -i "s:secret:$HTTP_SECRET:g" "$CONFIG_DIR/pilpil-server.toml"
sed -i "s:secret:$HTTP_SECRET:g" "$ROOTFS_MOUNT/home/pil/.config/systemd/user/vlc.service"
sed -i "s:secret:$HTTP_SECRET:g" "$ROOTFS_MOUNT/home/pil/pilpil-client/defaults.toml"
fi
#~ # 6. Copy medias
green "13/14 : Syncing media folder $LOCAL_MEDIA_DIR/ with $REMOTE_MEDIA_DIR/ \n"
if [[ ! "$DRY_RUN" ]]; then
# Remove filler file
if [[ -f "$REMOTE_MEDIA_DIR/remove_me" ]]; then
sudo rm "$REMOTE_MEDIA_DIR/remove_me"
fi
fi
if [[ -d "$ROOTFS_MOUNT" ]]; then
# Get available space on rootfs
ROOTFS_AVAILABLE_SPACE=$(df -t ext4 -P "$ROOTFS_MOUNT" | tail -1 | awk '{print $4}')
yellow "Space available on rootfs : $ROOTFS_AVAILABLE_SPACE sectors"
# Get Media folder size
MEDIA_SIZE=$(du -c "$LOCAL_MEDIA_DIR" | tail -1 | awk '{print $1}')
yellow "Size of medias : $MEDIA_SIZE sectors"
fi
if [[ ! "$DRY_RUN" ]]; then
# Only copy files if enough space available
if [[ "$MEDIA_SIZE" -lt "$ROOTFS_AVAILABLE_SPACE" ]]; then
USER_ID=$( cat "$ROOTFS_MOUNT/etc/passwd" | grep $PI_USER | awk -F: '{print $3}' )
GROUP_ID=$( cat "$ROOTFS_MOUNT/etc/passwd" | grep $PI_USER | awk -F: '{print $4}' )
sudo cp "$LOCAL_MEDIA_DIR/"* "$REMOTE_MEDIA_DIR/"
sudo chown -R $USER_ID:$GROUP_ID "$REMOTE_MEDIA_DIR"
sync
else
red "Not enough space on $ROOTFS_MOUNT, skipping..."
fi
fi
# Unmount FS
green "Operation 13/13 : Unmounting filesystems"
umount $BOOT_MOUNT
umount $ROOTFS_MOUNT
green "14/14 : Unmounting filesystems"
if [[ ! "$DRY_RUN" ]]; then
umount "$BOOT_MOUNT"
umount "$ROOTFS_MOUNT"
fi
yellow "Client $(($IP-9))/$CLIENT_NUMBER done."
if [[ "$IP" -le "$IP_CNT" ]]
then
#~ echo "$IP / $(($IP_CNT-1))"
if [[ "$IP" -lt "$(($IP_CNT-1))" ]]; then
red "Please swap sd card in reader and enter uppercase 'yes' to proceed with next client or hit Ctrl-C:"
read -n 4 GO_ON
if [ "$GO_ON" != "YES" ]