175 lines
6.2 KiB
Bash
Executable File
175 lines
6.2 KiB
Bash
Executable File
#!/bin/bash
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SUPPORT_KEY="x2Dmw3hLRDPQa1sg59fAx2Dmw3hLRDPQa1sg59fA"
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SUPPORT_URL="http://192.168.50.2:5000"
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SUPPORT_SSHSERVER="192.168.50.2"
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function error() {
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id="$1"
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echo $id
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zenity --error --title="Erreur" --text="Une erreur s'est produite... Mais rien de grave !\nVous pouvez envoyez un mail à contact@lis67.eu en précisant l'erreur suivante : $id\n\nVous pouvez aussi essayer de quitter le support en relançant le logiciel, puis recommencer en le relançant à nouveau." --no-wrap
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exit 1
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}
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if [[ $EUID -ne 0 ]]; then
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error "lis67.uid.ne.zero"
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fi
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########################### UNINSTALL
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if id lis67_support > /dev/null; then
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if zenity --question --title="LIS67 support à distance" --text="Voulez-vous désactiver le dépannage à distance ?" --no-wrap; then
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# uninstall packets
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(
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export DEBIAN_FRONTEND=noninteractive
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# apt-get remove -yq autossh openssh-server
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echo "100"
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) | zenity --progress --title="LIS67 support à distance" --text="Désinstallation des paquets..." --auto-close --pulsate
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# grap pubkey
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pubkey=$(sudo -u lis67_support /bin/bash -c "cat /home/lis67_support/.ssh/id_rsa.pub")
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# remove service and kill process
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service lis67_autossh stop
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pkill -9 autossh
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service ssh stop
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rm /etc/systemd/system/lis67_autossh.service
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# delete user
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userdel -r -f lis67_support
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# inform webapp
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curl -s -X DELETE -H "Content-Type: application/json" "$SUPPORT_URL/end" -d "{\"key\": \"${SUPPORT_KEY}\", \"pubKey\": \"${pubkey}\"}"
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# done!
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zenity --info --title="LIS67 support à distance" --text="Le support a été désactivé. Plus aucune personne au LIS67 ne pourra accéder à votre ordinateur tant que vous ne réactiverez pas le support." --no-wrap
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exit 0
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else
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exit 0
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fi
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fi
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########################### INSTALL
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if zenity --question --title="LIS67 support à distance" --text="Voulez-vous activer le support dépannage à distance?\nSeules les personnes habilitées au LIS pourront accéder à votre ordinateur. Envoyer un mail à contact@lis67.eu pour savoir qui est autorisé.\n\nPour mettre fin au support, relancez ce logiciel." --no-wrap
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then
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# install packages
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(
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export DEBIAN_FRONTEND=noninteractive
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apt-get install -yq jq autossh openssh-server > /dev/null 2>&1
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echo "100"
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) | zenity --progress --title="LIS67 support à distance" --text="Installation des paquets..." --auto-close --pulsate
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# loop until the user understands what we expect...
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while [[ -z $nom || -z $prenom || ${#nom} -le 3 || ${#prenom} -le 3 ]]; do
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# ask nom et prenom
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form_result=$(zenity --forms --title="Informations" --separator=";" --text="Entrez vos informations pour le support" --add-entry="Votre nom:" --add-entry="Votre prénom:")
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if [[ $? -ne 0 ]]; then
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exit 1
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fi
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IFS=';' read -ra FORM_ARR <<< "$form_result"
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nom="${FORM_ARR[0]}"
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prenom="${FORM_ARR[1]}"
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if [[ -z $nom || -z $prenom ]]; then
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zenity --error --title="Erreur" --text="Veuillez rentrer votre nom et prénom." --no-wrap
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elif [[ ${#nom} -le 3 || ${#prenom} -le 3 ]]; then
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zenity --error --title="Erreur" --text="Veuillez rentrer un nom et prénom un peu plus grand..." --no-wrap
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fi
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done
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# création du user
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adduser --system --shell /bin/bash --gecos 'LIS67 support user' --group --disabled-password --home /home/lis67_support lis67_support
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if [[ $? -ne 0 ]]; then
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error "lis67.adduser"
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fi
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# add to sudo group
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echo "lis67_support ALL=(ALL) NOPASSWD: ALL" > /etc/sudoers.d/lis67_support
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# generate ssh key
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if [[ -f /home/lis67_support/.ssh/id_rsa ]]; then
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rm /home/lis67_support/.ssh/id_rsa /home/lis67_support/.ssh/id_rsa > /dev/null 2>&1
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fi
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sudo -u lis67_support /bin/bash -c "cd /home/lis67_support && ssh-keygen -q -t rsa -f /home/lis67_support/.ssh/id_rsa -N \"\""
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if [[ $? -ne 0 ]]; then
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error "lis67.ssh_keygen"
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fi
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# get ssh_key value
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pubkey=$(sudo -u lis67_support /bin/bash -c "cat /home/lis67_support/.ssh/id_rsa.pub")
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if [[ $? -ne 0 || -z $pubkey ]]; then
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error "lis67.pubkey_read"
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fi
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# push pubkey on server
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server_ret=$(curl -X POST -H "Content-Type: application/json" "$SUPPORT_URL/request" -d "{\"key\": \"${SUPPORT_KEY}\", \"pubKey\": \"${pubkey}\", \"nom\": \"${nom}\", \"prenom\": \"${prenom}\"}")
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if [[ $? -ne 0 ]]; then error "lis67.srv_err.curl"; fi
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if [[ -z $server_ret ]]; then error "lis67.srv_err.empty_resp"; fi
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status=$(echo "$server_ret" | jq .status -r)
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if [[ $? -ne 0 ]]; then error "lis67.jqstatus.ret"; fi
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if [[ "$status" != "ok" ]]; then error "lis67.status.notok"; fi
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lis67_pubkeys=$(echo "$server_ret" | jq .pubkeys -r)
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if [[ $? -ne 0 ]]; then error "lis67.jqpubkeys.ret"; fi
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if [[ -z $lis67_pubkeys ]]; then error "lis67.pubkeys.empty"; fi
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remote_port=$(echo "$server_ret" | jq .remoteport -r)
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if [[ $? -ne 0 ]]; then error "lis67.jqremoteport.ret"; fi
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if [[ -z $remote_port ]]; then error "lis67.remoteport.empty"; fi
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remote_user=$(echo "$server_ret" | jq .remoteuser -r)
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if [[ $? -ne 0 ]]; then error "lis67.jqremoteuser.ret"; fi
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if [[ -z $remote_user ]]; then error "lis67.remoteuser.empty"; fi
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# write lis67 keys to authorized
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echo -e "$lis67_pubkeys" > /home/lis67_support/.ssh/authorized_keys
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# start autossh service
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cat << EOF > /etc/systemd/system/lis67_autossh.service
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[Unit]
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Description=Reverse SSH tunnel
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After=network-online.target
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[Service]
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ExecStart=/home/lis67_support/autossh.sh
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TimeoutSec=infinity
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[Install]
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WantedBy=multi-user.target
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EOF
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cat << EOF > /home/lis67_support/autossh.sh
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#!/bin/bash
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while [ 1 ]; do
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/usr/bin/autossh -i /home/lis67_support/.ssh/id_rsa -p 22967 -o StrictHostKeyChecking=no -NR $remote_port:localhost:22 $remote_user@$SUPPORT_SSHSERVER
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done
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EOF
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cat << EOF > /home/lis67_support/as_user.sh
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#!/bin/bash
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RUN_USER=1000
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export DISPLAY=:0
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export XAUTHORITY=/home/\$(id -un \$RUN_USER)/.Xauthority
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export DBUS_SESSION_BUS_ADDRESS=unix:path=/run/user/\$RUN_USER/bus
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sudo -u \$(id -un \$RUN_USER) -E \$@
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EOF
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chmod +x /home/lis67_support/as_user.sh
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cat << EOF > /home/lis67_support/welcome.sh
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#!/bin/bash
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/home/lis67_support/as_user.sh zenity --notification --text "LIS67 support: votre ordinateur est pris en charge à distance."
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EOF
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chmod +x /home/lis67_support/as_user.sh
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service ssh start
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chmod +x /home/lis67_support/autossh.sh
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systemctl enable lis67_autossh
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service lis67_autossh start
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# done!
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zenity --info --title="Succès" --text="Support activé !" --no-wrap
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fi
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