From 00e46ed40164230fe3f0f745913e091d653ff6c2 Mon Sep 17 00:00:00 2001
From: Ezra Taimuty-Loomis <etaimutyloomis@gmail.com>
Date: Fri, 21 Aug 2020 14:53:59 -0400
Subject: [PATCH] Scripts to run server as service

---
 README.md                                     |  4 +-
 src/CMakeLists.txt                            |  8 ++-
 src/{piScan_backend.cpp => piscan_server.cpp} |  0
 src/service/piscan_server                     | 67 +++++++++++++++++++
 src/service/piscan_server.service             |  9 +++
 5 files changed, 84 insertions(+), 4 deletions(-)
 rename src/{piScan_backend.cpp => piscan_server.cpp} (100%)
 create mode 100644 src/service/piscan_server
 create mode 100644 src/service/piscan_server.service

diff --git a/README.md b/README.md
index 06c22a0..53795ee 100644
--- a/README.md
+++ b/README.md
@@ -83,14 +83,14 @@ Now you can build PiScan:
 	make all
 Alternatively, you can build the binaries individually if you don't need all of them
 
-	make piScan_backend		# main program
+	make piscan_server		# main program
 	
 	make piscan_hpdconv		# tool to convert Uniden Sentinel files to PiScan files
 ### Running
 For now, you have to be in the `build` directory to run the program. In the future there will be an install command to eliminate the need for this.
 You can now run PiScan from the command line:
 
-	./piScan_backend
+	./src/piscan_server
 See **Usage** for more information on command arguments and setting up the data files 
     
 
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 55a9503..855a48a 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -1,6 +1,6 @@
 project (piscan_server)
 
-add_executable(piscan_server piScan_backend.cpp)
+add_executable(piscan_server piscan_server.cpp)
 
 MACRO(use_included_rtaudio)
     SET (cubicsdr_sources
@@ -149,6 +149,7 @@ set(APPLICATION_LIBS common external loguru proto scan server sigproc util ${APP
 
 target_link_libraries(piscan_server ${APPLICATION_LIBS})
 
+set(CPACK_SET_DESTDIR ON)
 set(CPACK_GENERATOR "DEB")
 set(CPACK_DEBIAN_PACKAGE_MAINTAINER "etaimutyloomis@gmail.com")
 set(CPACK_DEBIAN_PACKAGE_SHLIBDEPS ON)
@@ -159,4 +160,7 @@ install(
 	DESTINATION /usr/local/bin
     LIBRARY DESTINATION /usr/local/bin
 )
-
+install(
+    FILES ${CMAKE_CURRENT_SOURCE_DIR}/service/piscan_server DESTINATION /etc/init.d
+    FILES ${CMAKE_CURRENT_SOURCE_DIR}/service/piscan_server.service DESTINATION /etc/systemd/system
+)
diff --git a/src/piScan_backend.cpp b/src/piscan_server.cpp
similarity index 100%
rename from src/piScan_backend.cpp
rename to src/piscan_server.cpp
diff --git a/src/service/piscan_server b/src/service/piscan_server
new file mode 100644
index 0000000..e8ffc31
--- /dev/null
+++ b/src/service/piscan_server
@@ -0,0 +1,67 @@
+#!/bin/sh
+### BEGIN INIT INFO
+# Provides:          piscan-server
+# Required-Start:    $local_fs $network $named $time $syslog
+# Required-Stop:     $local_fs $network $named $time $syslog
+# Default-Start:     2 3 4 5
+# Default-Stop:      0 1 6
+# Description:       <DESCRIPTION>
+### END INIT INFO
+
+SCRIPT=/usr/local/bin/piscan_server
+RUNAS=ezra
+
+PIDFILE=/var/run/piscan-server.pid
+LOGFILE=/var/log/piscan-server.log
+
+start() {
+  if [ -f /var/run/$PIDNAME ] && kill -0 $(cat /var/run/$PIDNAME); then
+    echo 'Service already running' >&2
+    return 1
+  fi
+  echo 'Starting service…' >&2
+  local CMD="$SCRIPT &> /dev/null & echo \$!"
+  su -c "$CMD" -l $RUNAS > "$PIDFILE"
+  echo 'Service started' >&2
+}
+
+stop() {
+  if [ ! -f "$PIDFILE" ] || ! kill -0 $(cat "$PIDFILE"); then
+    echo 'Service not running' >&2
+    return 1
+  fi
+  echo 'Stopping service…' >&2
+  kill -15 $(cat "$PIDFILE") && rm -f "$PIDFILE"
+  echo 'Service stopped' >&2
+}
+
+uninstall() {
+  echo -n "Are you really sure you want to uninstall this service? That cannot be undone. [yes|No] "
+  local SURE
+  read SURE
+  if [ "$SURE" = "yes" ]; then
+    stop
+    rm -f "$PIDFILE"
+    echo "Notice: log file is not be removed: '$LOGFILE'" >&2
+    update-rc.d -f piscan-server remove
+    rm -fv "$0"
+  fi
+}
+
+case "$1" in
+  start)
+    start
+    ;;
+  stop)
+    stop
+    ;;
+  uninstall)
+    uninstall
+    ;;
+  restart)
+    stop
+    start
+    ;;
+  *)
+    echo "Usage: $0 {start|stop|restart|uninstall}"
+esac
diff --git a/src/service/piscan_server.service b/src/service/piscan_server.service
new file mode 100644
index 0000000..582bd20
--- /dev/null
+++ b/src/service/piscan_server.service
@@ -0,0 +1,9 @@
+[Unit]
+Description=PiScan Server
+
+[Service]
+Type=simple
+ExecStart=/usr/local/bin/piscan_server -v 0
+
+[Install]
+WantedBy=multi-user.target