New upstream version 1.11.0+dfsgupstream/1.11.0+dfsg

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

4 files changed, 260 insertions, 0 deletions

diff --git a/collectors/charts.d.plugin/libreswan/Makefile.inc b/collectors/charts.d.plugin/libreswan/Makefile.inc
new file mode 100644
index 000000000..af767d0dd
--- /dev/null
+++ b/collectors/charts.d.plugin/libreswan/Makefile.inc
@@ -0,0 +1,13 @@
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# THIS IS NOT A COMPLETE Makefile
+# IT IS INCLUDED BY ITS PARENT'S Makefile.am
+# IT IS REQUIRED TO REFERENCE ALL FILES RELATIVE TO THE PARENT
+
+# install these files
+dist_charts_DATA       += libreswan/libreswan.chart.sh
+dist_chartsconfig_DATA += libreswan/libreswan.conf
+
+# do not install these files, but include them in the distribution
+dist_noinst_DATA       += libreswan/README.md libreswan/Makefile.inc
+
diff --git a/collectors/charts.d.plugin/libreswan/README.md b/collectors/charts.d.plugin/libreswan/README.md
new file mode 100644
index 000000000..41026cf72
--- /dev/null
+++ b/collectors/charts.d.plugin/libreswan/README.md
@@ -0,0 +1,42 @@
+# libreswan
+
+The plugin will collects bytes-in, bytes-out and uptime for all established libreswan IPSEC tunnels.
+
+The following charts are created, **per tunnel**:
+
+1. **Uptime**
+
+ * the uptime of the tunnel
+
+2. **Traffic**
+
+ * bytes in
+ * bytes out
+
+### configuration
+
+Its config file is `/etc/netdata/charts.d/libreswan.conf`.
+
+The plugin executes 2 commands to collect all the information it needs:
+
+```sh
+ipsec whack --status
+ipsec whack --trafficstatus
+```
+
+The first command is used to extract the currently established tunnels, their IDs and their names.
+The second command is used to extract the current uptime and traffic.
+
+Most probably user `netdata` will not be able to query libreswan, so the `ipsec` commands will be denied.
+The plugin attempts to run `ipsec` as `sudo ipsec ...`, to get access to libreswan statistics.
+
+To allow user `netdata` execute `sudo ipsec ...`, create the file `/etc/sudoers.d/netdata` with this content:
+
+```
+netdata ALL = (root) NOPASSWD: /sbin/ipsec whack --status
+netdata ALL = (root) NOPASSWD: /sbin/ipsec whack --trafficstatus
+```
+
+Make sure the path `/sbin/ipsec` matches your setup (execute `which ipsec` to find the right path).
+
+---
diff --git a/collectors/charts.d.plugin/libreswan/libreswan.chart.sh b/collectors/charts.d.plugin/libreswan/libreswan.chart.sh
new file mode 100644
index 000000000..6e29f8473
--- /dev/null
+++ b/collectors/charts.d.plugin/libreswan/libreswan.chart.sh
@@ -0,0 +1,176 @@
+# shellcheck shell=bash disable=SC1117
+# no need for shebang - this file is loaded from charts.d.plugin
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# netdata
+# real-time performance and health monitoring, done right!
+# (C) 2018 Costa Tsaousis <costa@tsaousis.gr>
+#
+
+# _update_every is a special variable - it holds the number of seconds
+# between the calls of the _update() function
+libreswan_update_every=1
+
+# the priority is used to sort the charts on the dashboard
+# 1 = the first chart
+libreswan_priority=90000
+
+# set to 1, to run ipsec with sudo
+libreswan_sudo=1
+
+# global variables to store our collected data
+
+# [TUNNELID] = TUNNELNAME
+# here we track the *latest* established tunnels
+# as detected by: ipsec whack --status
+declare -A libreswan_connected_tunnels=()
+
+# [TUNNELID] = VALUE
+# here we track values of all established tunnels (not only the latest)
+# as detected by: ipsec whack --trafficstatus
+declare -A libreswan_traffic_in=()
+declare -A libreswan_traffic_out=()
+declare -A libreswan_established_add_time=()
+
+# [TUNNELNAME] = CHARTID
+# here we remember CHARTIDs of all tunnels
+# we need this to avoid converting tunnel names to chart IDs on every iteration
+declare -A libreswan_tunnel_charts=()
+
+# run the ipsec command
+libreswan_ipsec() {
+	if [ ${libreswan_sudo} -ne 0 ]
+		then
+		sudo -n "${IPSEC_CMD}" "${@}"
+		return $?
+	else
+		"${IPSEC_CMD}" "${@}"
+		return $?
+	fi
+}
+
+# fetch latest values - fill the arrays
+libreswan_get() {
+	# do all the work to collect / calculate the values
+	# for each dimension
+
+	# empty the variables
+	libreswan_traffic_in=()
+	libreswan_traffic_out=()
+	libreswan_established_add_time=()
+	libreswan_connected_tunnels=()
+
+	# convert the ipsec command output to a shell script
+        # and source it to get the values
+        # shellcheck disable=SC1090
+	source <(
+		{
+			libreswan_ipsec whack --status;
+			libreswan_ipsec whack --trafficstatus;
+		} | sed -n \
+				-e "s|[0-9]\+ #\([0-9]\+\): \"\(.*\)\".*IPsec SA established.*newest IPSEC.*|libreswan_connected_tunnels[\"\1\"]=\"\2\"|p" \
+				-e "s|[0-9]\+ #\([0-9]\+\): \"\(.*\)\",.* add_time=\([0-9]\+\),.* inBytes=\([0-9]\+\),.* outBytes=\([0-9]\+\).*|libreswan_traffic_in[\"\1\"]=\"\4\"; libreswan_traffic_out[\"\1\"]=\"\5\"; libreswan_established_add_time[\"\1\"]=\"\3\";|p"
+	) || return 1
+
+	# check we got some data
+	[ ${#libreswan_connected_tunnels[@]} -eq 0 ] && return 1
+
+	return 0
+}
+
+# _check is called once, to find out if this chart should be enabled or not
+libreswan_check() {
+	# this should return:
+	#  - 0 to enable the chart
+	#  - 1 to disable the chart
+
+	require_cmd ipsec || return 1
+
+	# make sure it is libreswan
+	# shellcheck disable=SC2143
+	if [ -z "$(ipsec --version | grep -i libreswan)" ]
+	then
+	    error "ipsec command is not Libreswan. Disabling Libreswan plugin."
+	    return 1
+	fi
+
+	# check that we can collect data
+	libreswan_get || return 1
+
+	return 0
+}
+
+# create the charts for an ipsec tunnel
+libreswan_create_one() {
+	local n="${1}" name
+
+	name="${libreswan_connected_tunnels[${n}]}"
+
+	[ ! -z "${libreswan_tunnel_charts[${name}]}" ] && return 0
+
+	libreswan_tunnel_charts[${name}]="$(fixid "${name}")"
+
+	cat <<EOF
+CHART libreswan.${libreswan_tunnel_charts[${name}]}_net '${name}_net' "LibreSWAN Tunnel ${name} Traffic" "kilobits/s" "${name}" libreswan.net area $((libreswan_priority)) $libreswan_update_every
+DIMENSION in '' incremental 8 1000
+DIMENSION out '' incremental -8 1000
+CHART libreswan.${libreswan_tunnel_charts[${name}]}_uptime '${name}_uptime' "LibreSWAN Tunnel ${name} Uptime" "seconds" "${name}" libreswan.uptime line $((libreswan_priority + 1)) $libreswan_update_every
+DIMENSION uptime '' absolute 1 1
+EOF
+
+	return 0
+
+}
+
+# _create is called once, to create the charts
+libreswan_create() {
+	local n
+	for n in "${!libreswan_connected_tunnels[@]}"
+	do
+		libreswan_create_one "${n}"
+	done
+	return 0
+}
+
+libreswan_now=$(date +%s)
+
+# send the values to netdata for an ipsec tunnel
+libreswan_update_one() {
+	local n="${1}" microseconds="${2}" name id uptime
+
+	name="${libreswan_connected_tunnels[${n}]}"
+	id="${libreswan_tunnel_charts[${name}]}"
+
+	[ -z "${id}" ] && libreswan_create_one "${name}"
+
+	uptime=$(( libreswan_now - libreswan_established_add_time[${n}] ))
+	[ ${uptime} -lt 0 ] && uptime=0
+
+		# write the result of the work.
+	cat <<VALUESEOF
+BEGIN libreswan.${id}_net ${microseconds}
+SET in = ${libreswan_traffic_in[${n}]}
+SET out = ${libreswan_traffic_out[${n}]}
+END
+BEGIN libreswan.${id}_uptime ${microseconds}
+SET uptime = ${uptime}
+END
+VALUESEOF
+}
+
+# _update is called continiously, to collect the values
+libreswan_update() {
+	# the first argument to this function is the microseconds since last update
+	# pass this parameter to the BEGIN statement (see bellow).
+
+	libreswan_get || return 1
+	libreswan_now=$(date +%s)
+
+	local n
+	for n in "${!libreswan_connected_tunnels[@]}"
+	do
+		libreswan_update_one "${n}" "${@}"
+	done
+
+	return 0
+}
diff --git a/collectors/charts.d.plugin/libreswan/libreswan.conf b/collectors/charts.d.plugin/libreswan/libreswan.conf
new file mode 100644
index 000000000..9b3ee77b7
--- /dev/null
+++ b/collectors/charts.d.plugin/libreswan/libreswan.conf
@@ -0,0 +1,29 @@
+# no need for shebang - this file is loaded from charts.d.plugin
+
+# netdata
+# real-time performance and health monitoring, done right!
+# (C) 2018 Costa Tsaousis <costa@tsaousis.gr>
+# GPL v3+
+#
+
+# the data collection frequency
+# if unset, will inherit the netdata update frequency
+#libreswan_update_every=1
+
+# the charts priority on the dashboard
+#libreswan_priority=90000
+
+# the number of retries to do in case of failure
+# before disabling the module
+#libreswan_retries=10
+
+# set to 1, to run ipsec with sudo (the default)
+# set to 0, to run ipsec without sudo
+#libreswan_sudo=1
+
+# TO ALLOW NETDATA RUN ipsec AS ROOT
+# CREATE THE FILE: /etc/sudoers.d/netdata
+# WITH THESE 2 LINES (uncommented of course):
+#
+# netdata ALL = (root) NOPASSWD: /sbin/ipsec whack --status
+# netdata ALL = (root) NOPASSWD: /sbin/ipsec whack --trafficstatus