Add service installation scripts for Windows

.travis.yml

@@ -20,6 +20,7 @@ script:
   - mkdir win32
   - ln dnscrypt-proxy.exe win32/
   - ln ../LICENSE dnscrypt-proxy.toml forwarding-rules.txt blacklist.txt win32/
+  - ln ../windows/* win32/
   - zip -9 -r dnscrypt-proxy-win32-${TRAVIS_TAG:-dev}.zip win32
 
   - go clean
@@ -27,6 +28,7 @@ script:
   - mkdir win64
   - ln dnscrypt-proxy.exe win64/
   - ln ../LICENSE dnscrypt-proxy.toml forwarding-rules.txt blacklist.txt win64/
+  - ln ../windows/* win64/
   - zip -9 -r dnscrypt-proxy-win64-${TRAVIS_TAG:-dev}.zip win64
 
   - go clean

windows/service-install.bat

@@ -0,0 +1,21 @@
+@NET session
+@IF %ERRORLEVEL% NEQ 0 GOTO ELEVATE
+@GOTO ADMINTASKS
+
+:ELEVATE
+ECHO Elevated privileges are temporarily required, just to register or remove the dnscrypt-proxy service
+CD /d %~dp0
+MSHTA "javascript: var shell = new ActiveXObject('shell.application'); shell.ShellExecute('%~nx0', '', '', 'runas', 1); close();"
+EXIT
+
+:ADMINTASKS
+
+@CD /d %~dp0
+
+.\dnscrypt-proxy.exe -service install
+.\dnscrypt-proxy.exe -service start
+
+@ECHO ""
+@SET /P _=Thank you for using dnscrypt-proxy! Hit [RETURN] to finish
+
+EXIT

windows/service-restart.bat

@@ -0,0 +1,20 @@
+@NET session
+@IF %ERRORLEVEL% NEQ 0 GOTO ELEVATE
+@GOTO ADMINTASKS
+
+:ELEVATE
+ECHO Elevated privileges are temporarily required, just to register or remove the dnscrypt-proxy service
+CD /d %~dp0
+MSHTA "javascript: var shell = new ActiveXObject('shell.application'); shell.ShellExecute('%~nx0', '', '', 'runas', 1); close();"
+EXIT
+
+:ADMINTASKS
+
+@CD /d %~dp0
+
+.\dnscrypt-proxy.exe -service restart
+
+@ECHO ""
+@SET /P _=Thank you for using dnscrypt-proxy! Hit [RETURN] to finish
+
+EXIT

windows/service-uninstall.bat

@@ -0,0 +1,21 @@
+@NET session
+@IF %ERRORLEVEL% NEQ 0 GOTO ELEVATE
+@GOTO ADMINTASKS
+
+:ELEVATE
+ECHO Elevated privileges are temporarily required, just to register or remove the dnscrypt-proxy service
+CD /d %~dp0
+MSHTA "javascript: var shell = new ActiveXObject('shell.application'); shell.ShellExecute('%~nx0', '', '', 'runas', 1); close();"
+EXIT
+
+:ADMINTASKS
+
+@CD /d %~dp0
+
+.\dnscrypt-proxy.exe -service stop
+.\dnscrypt-proxy.exe -service uninstall
+
+@ECHO ""
+@SET /P _=Thank you for using dnscrypt-proxy! Hit [RETURN] to finish
+
+EXIT