Adding upstream version 1.29.3.upstream/1.29.3upstream

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

1 files changed, 187 insertions, 0 deletions

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 0000000..bfa2b9e
--- /dev/null
+++ b/collectors/charts.d.plugin/libreswan/libreswan.chart.sh
@@ -0,0 +1,187 @@
+# 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=()
+
+is_able_sudo_ipsec() {
+  if ! sudo -n -l "${IPSEC_CMD}" whack --status > /dev/null 2>&1; then
+    return 1
+  fi
+  if ! sudo -n -l "${IPSEC_CMD}" whack --trafficstatus > /dev/null 2>&1; then
+    return 1
+  fi
+  return 0
+}
+
+# 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]\+ #\([0-9]\+\): \"\(.*\)\",\{0,1\}.* 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
+
+  if [ ${libreswan_sudo} -ne 0 ] && ! is_able_sudo_ipsec; then
+    error "not enough permissions to execute ipsec with sudo. Disabling Libreswan plugin."
+    return 1
+  fi
+
+  # check that we can collect data
+  libreswan_get || return 1
+
+  return 0
+}
+
+# create the charts for an ipsec tunnel
+libreswan_create_one() {
+  local n="${1}" name
+
+  name="${libreswan_connected_tunnels[${n}]}"
+
+  [ -n "${libreswan_tunnel_charts[${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
+}