From e4a88178aebe8ceb6e8721654fbcd19800b80ee3 Mon Sep 17 00:00:00 2001
From: Martin Winkler <efelon@winklerfamilie.eu>
Date: Wed, 24 Mar 2021 14:45:09 +0100
Subject: [PATCH] Sequence to install coturn and step for updating public ip

TODO configuration notes
---
 seqs/coturn.sh | 72 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 72 insertions(+)
 create mode 100755 seqs/coturn.sh

diff --git a/seqs/coturn.sh b/seqs/coturn.sh
new file mode 100755
index 0000000..cd4ca54
--- /dev/null
+++ b/seqs/coturn.sh
@@ -0,0 +1,72 @@
+#!/bin/bash
+
+toolName=coturn
+toolConf="/etc/turnserver.conf"
+
+# Get script working directory
+# (when called from a different directory)
+WDIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" >>/dev/null 2>&1 && pwd)"
+APTOPT=
+CONFIG=0
+SCRIPT_FILE=$(basename -- $0)
+SCRIPT_NAME=${SCRIPT_FILE%%.*}
+CONFIG_FILE_NAME="${SCRIPT_NAME}.cfg"
+CONFIG_FILE_TEMPLATE="$WDIR/${CONFIG_FILE_NAME}.example"
+
+step_config() {
+  #echo "Called once before executing steps."
+  ## e.g. to source a config file manually:
+  #. "$CONFIG_FILE"
+  ## or to use sequencer api with global config file:
+  #initSeqConfig "$CONFIG_FILE_NAME" "$CONFIG_FILE_TEMPLATE"
+  ## or to use sequencer api with profile config file support:
+  #initSeqConfig -p "$SCRIPT_NAME" "$CONFIG_FILE_TEMPLATE"
+  #if [ $? -eq 0 ] ; then
+  #  CONFIG=1
+  #else
+  #  # End if no configuration file exists
+  #  [ $DRY -eq 0 ] && return -1
+  #fi
+  [ $QUIET -ne 0 ] && APTOPT="-y"
+  return 0
+}
+
+step_1_info() { echo "Install coturn"; }
+step_1_alias() { ALIAS="install"; }
+step_1() {
+  exe apt update
+  exe apt install coturn $APTOPT
+}
+
+step_10_info() { echo "Update coturn 'external-ip' using dig [CUSTOM DNS]"; }
+step_10_alias() { ALIAS="updateip"; }
+step_10() {
+  shift
+  local dnsUrl="46.182.19.48" #digitalcourage.de/support/zensurfreier-dns-server
+  [ ! -z "$1" ] && dnsUrl="$1"
+  local pubIp=$(dig @$dnsUrl +short cloud.imoff.de)
+  local confIp=`cat "$toolConf" | grep "^external-ip" | cut -d'=' -f2`
+
+  echoseq "Current public ip:    $pubIp"
+  echoseq "Configured public ip: $confIp"
+
+  if [ "$pubIp" != "$confIp" ]; then
+    echoseq " [I] Update required"
+    exe sed -i "s/^external-ip[[:space:]]*=.*/external-ip=${pubIp}/" "$toolConf"
+    exe service coturn restart
+  else
+    echoseq " [I] No update required"
+  fi
+}
+
+step_12_info() { echo "Setup public ip update cron job every 5 minutes"; }
+step_12_alias() { ALIAS="cronip"; }
+step_12() {
+  echoseq " [I] Setup $ipCronLoc"
+  addConf -s "$ipCron" "$ipCronLoc"
+} 
+ipCronLoc="/etc/cron.d/update_public_ip"
+ipCron="*/5 * * * * root $WDIR/$SCRIPT_FILE -qq updateip"
+
+VERSION_SEQREV=12
+. /usr/local/bin/sequencer.sh