Windows 7 Login Script

1. Windows 7 Login Script

2. Windows 7 Login Script • Introduction • The Windows 7 login script I inherited • Tools • Flow Chart • Requirements • Auto Login • Auto Shutdown • Unix Timestamps • Design • Auto Login • Auto Shutdown • Conclusion

3. Introduction • The Windows 7 login script I inherited • Displays a login screen • Performs account authentication • Checks for blank usernames and passwords less than 8 characters • Auto login capability does not work. • Auto login implemented using threading.

4. Introduction • Threading Thread B Thread C Thread A

5. Introduction • Tools • Python 2.7.3 • Eclipse

6. Flow Chart

7. Requirements: Auto Shutdown • Shutdown the computer at any scheduled time

8. Requirements: Auto Login • Create a 2 GB H: drive partition • Run login.vbs • Run LibraryDefaultPage.vbs • Display desktop

9. UNIX Timestamps • Number of seconds since 12 a.m. Jan. 1, 1970 • E.g. 5/3/2013 5:54:17 PM  1362518657.85

10. Design: auto Shutdown • Problem 1: time is not a Unix timestamp • ['11:20', ''] 1362063000.0

11. Design: auto Shutdown • Solution: • Step 1: Get the month, day, year datetime.datetime.now() now year month day str(now.year) str(now.month) str(now.day)

12. Design: auto Shutdown • Step 2: Get the hour, minute, second • hour,minute = shutdownTimeList[0].split(‘:’) • 11:20 • hour = 11 • minute = 20 • second = “00”

13. Design: auto Shutdown • Step 3: Make a date string • e.g. mm/dd/YYYY HH:MM:SS • Step 4: Make a timestamp • Time.mktime.datetime.datetime.strptime(date_string, “%m/%d/%Y %H:%M:%S”) • e.g. 1362063000.0

14. Design: Auto Login • Threading abandoned • Therefore: • shutdown –a: cancels shutdown/restart • shutdown –r –t xxx: sets restart for xxx seconds • ['1358517600000', '1358523000000', '1358527500000', '']

15. Design: Auto Login now restart 60 sec. after auto login period time.time() • clear any restart/shutdown • create 2 GB partition for H: • call login.vbs with • auto login credentials • call LibraryDefaultPage.vbs os.system(“shutdown –r –t xxx”)

16. Design: Auto Login now restart 60 sec. after auto login period os.system(“shutdown –a”) • clear any restart/shutdown • create 2 GB partition for H: • call login.vbs with • auto login credentials • call LibraryDefaultPage.vbs subprocess.call(“diskpart /s command.txt”) shell.Run(“wscript.exe [file path]”)

17. Design: Auto Login • Problem: Multiple auto login times now

18. Design: Auto Login • Solution: Boolean flag now flag

19. Design: Auto Login • Problem: auto login after auto shutdown now auto shutdown flag

20. Design: Auto Login • Solution: global variable autoShutdowntime now auto shutdown

21. Design: Auto Login now auto shutdown • Summary set flag to true os.system(“shutdown –a”) os.system(“shutdown –r –t xxx”)

22. Implementation • hour, minute = shutdownTimes[0].split(':') • dateString = month + "/" + day + "/" + year + " " + hour + ":" + minute + ":" + second • time.mktime(datetime.datetime.strptime(dateString, "%m/%d/%Y %H:%M:%S").timetuple()) • 1362063000.0

23. Questions?

24. Additional Material • (urllib2.urlopen("http://" + bootserver + "/getentityvarval?var=parameter").read()).split('\r\n')

25. Introduction • Why it needs to be improved • Switch Digital Classroom to Windows 7 • Reduce power consumption • Expired and webcat accounts can log in.