From dd0fa10d661262e6b2f016fa5dc271e662a9dc5b Mon Sep 17 00:00:00 2001
From: Jonas Gunz <himself@jonasgunz.de>
Date: Sun, 13 Sep 2020 22:00:33 +0200
Subject: + remote-support.sh

---
 scripts/remote-support.sh | 48 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 48 insertions(+)
 create mode 100755 scripts/remote-support.sh

diff --git a/scripts/remote-support.sh b/scripts/remote-support.sh
new file mode 100755
index 0000000..528ea27
--- /dev/null
+++ b/scripts/remote-support.sh
@@ -0,0 +1,48 @@
+#!/bin/bash
+
+# Remote access
+
+DEPENDENCIES=("sshd" "systemctl" "ssh" "ssh-keygen" "sudo")
+SSH_ACCESS_PUBKEY=""
+REMOTE_ADDRESS=""
+
+for dep in ${DEPENDENCIES[@]}; do
+	which $dep > /dev/null || exit 1
+done
+
+PORT=$(( ($RANDOM % 64000) + 1024 ))
+
+trap 'kill -s SIGKILL $SSH_PID' 1 2 9
+
+if [ ! -f $HOME/.ssh/id_rsa_remote ]; then
+	echo No SSH Key found. Creating one.
+
+	ssh-keygen -t rsa -N "" -C "remote key $USER@$HOSTNAME" \
+		-f "$HOME/.ssh/id_rsa_remote"
+
+	echo ---
+	cat $HOME/.ssh/id_rsa_remote.pub
+	echo ---
+	
+	read -p "Press ENTER to continue."
+fi
+
+grep -q "^$SSH_ACCESS_PUBKEY$" "$HOME/.ssh/authorized_keys" && \
+	KEEP_KEY="YES" || \
+	echo "$SSH_ACCESS_PUBKEY" >> "$HOME/.ssh/authorized_keys"
+
+sudo systemctl start sshd || echo "Failed to start sshd"
+
+ssh -R -N 22:$REMOTE_ADDRESS:$PORT &
+SSH_PID=$!
+
+echo Connected to $REMOTE_ADDRESS
+echo "=> U: $USER P: $PORT"
+echo CTRL+C to disconnect
+
+while kill -s 0 $PID; do sleep 1; done
+
+echo Connection closed.
+
+[ -z "$KEEP_KEY" ] && sed -i "\|^$SSH_ACCESS_PUBKEY$|d" \
+	"$HOME/.ssh/authorized_keys"
-- 
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