make it a macOS service

Makefile

@@ -2,9 +2,11 @@ all: dnssec.c
 	gcc -g -Wall dnssec.c -lcurl -std=gnu99 -o dnsd
 install:
 	cp dnsd.conf /etc/dnsd.conf
-	cp dnsd /usr/sbin/
+	cp dnsd /usr/local/bin/
 linux-service:
 	cp service/dnsd.service /lib/systemd/system/
 	chmod 644 /lib/systemd/system/dnsd.service
 	cp service/dnsd /etc/init.d/
 	chmod 755 /etc/init.d/dnsd
+macos-service:
+	cp service/service.dnsd.plist /Library/LaunchDaemons

README.md

@@ -32,6 +32,11 @@ make linux-service
 systemctl daemon-reload
 service dnsd start
 ```
+For macOS systems install and launch the service as follows.
+```
+make macos-service
+launchctl load /Library/LaunchDaemons/service.dnsd.plist
+```
 ### Verification
 You can verify wether the service is accessible through ```host -va github.com localhost```.
 ```

service/dnsd

@@ -23,8 +23,7 @@ set -e
 
 # Source function library.
 
-PATH=/sbin:/bin:/usr/sbin:/usr/bin
-DAEMON=/usr/sbin/dnsd
+DAEMON=/usr/local/bin/dnsd
 NAME=dnsd
 DESC="DNSd Daemon"
 PIDFILE=/var/run/$NAME.pid

service/dnsd.service

@@ -5,7 +5,7 @@ After=network.target
 [Service]
 Type=forking
 PIDFile=/var/run/dnsd.pid
-ExecStart=/usr/sbin/dnsd -f /etc/dnsd.conf
+ExecStart=/usr/local/bin/dnsd -f /etc/dnsd.conf
 KillMode=process
 Restart=on-failure
 

service/service.dnsd.plist

@@ -0,0 +1,17 @@
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+    <dict>
+        <key>KeepAlive</key>
+        <true/>
+        <key>Label</key>
+        <string>service.dnsd</string>
+        <key>ProgramArguments</key>
+        <array>
+            <string>/usr/local/bin/dnsd</string>
+            <string>-f</string>
+            <string>/etc/dnsd.conf</string>
+        </array>
+        <key>RunAtLoad</key>
+        <true/>
+    </dict>
+</plist>