Revert using 7z.exe for extraction, and replace sc with service_start and service_stop

WAPT/control

@@ -1,11 +1,11 @@
 package           : fws-openssh
-version           : 7.7.2.0-4
+version           : 7.7.2.0-5
 architecture      : all
 section           : base
 priority          : optional
 maintainer        : Daniel Berteaud <daniel@firewall-services.com>
 description       : OpenSSH for Windows
-depends           : 
+depends           : fws-7zip
 conflicts         : 
 maturity          : DEV
 locale            : 

setup.py

@@ -8,25 +8,27 @@ def install():
     print('Installing OpenSSH')
     mkdirs(makepath(programfiles,'OpenSSH'))
     print('    Stoping the service')
-    run_notfatal(r'sc stop sshd')
-    killalltasks('sshd.exe')
+    if service_installed('sshd') and service_is_running('sshd'):
+        service_stop('sshd')
+        killalltasks('sshd.exe')
     print('    Extract OpenSSH archive')
-    unzip('OpenSSH-Win%s.zip' % '64' if iswin64() else '32',makepath(programfiles,'OpenSSH'))
+    run('"%s" e -y -o"%s" OpenSSH-Win%s.zip' % (makepath(programfiles,'7-Zip','7z.exe'),makepath(programfiles,'OpenSSH'),'64' if iswin64() else '32'))
     print('    Installing the service')
     run(r'powershell.exe -ExecutionPolicy Bypass -File "%s\install-sshd.ps1"' % makepath(programfiles,'OpenSSH'))
     print('    Opening port 22 in the firewall')
     run_notfatal(r'netsh advfirewall firewall del rule name="OpenSSH Server"')
     run(r'netsh advfirewall firewall add rule name="OpenSSH Server" dir=in action=allow protocol=TCP localport=22 enable=yes')
     print('    Starting the service')
-    run(r'sc start sshd', accept_returncodes=[0,1056])
+    service_start('sshd')
     print(r'    Enabling sshd service on boot')
     run('sc config sshd start= auto')
 
 def uninstall():
     print('Removing OpenSSH')
     print('    Stoping the service')
-    run_notfatal('sc stop sshd')
-    killalltasks('ssh.exe')
+    if service_is_running('sshd'):
+        service_stop('sshd')
+        killalltasks('sshd.exe')
     print('    Uninstalling the service')
     run(r'powershell.exe -ExecutionPolicy Bypass -File "%s\uninstall-sshd.ps1"' % makepath(programfiles,'OpenSSH'))
     print('    Removing files')