fix bugs in last few commits
authorCameron Patrick <cameron@ucc.gu.uwa.edu.au>
Sun, 1 Aug 2004 07:00:15 +0000 (07:00 +0000)
committerCameron Patrick <cameron@ucc.gu.uwa.edu.au>
Sun, 1 Aug 2004 07:00:15 +0000 (07:00 +0000)
sql-edition/servers/LATClient.py
sql-edition/servers/VendingMachine.py

index 12cc47c..ce77970 100644 (file)
@@ -17,27 +17,27 @@ def read_for_a_bit(rfh):
        while 1:
                r = select([rfh], [], [], 5.0)[0]
                if r:
-                       message = message + rfh.read(1)
+                       try:
+                               ch = rfh.read(1)
+                       except socket.error:
+                               ch = ''
+                       if ch == '':
+                               break
+                       message = message + ch
                else:
                        break
        print "Received message: ", repr(message)
        return message
 
-def write_expecting_echo(rfh, wfh, message):
+def write_and_get_response(rfh, wfh, message, expect_echo=True):
        print "Writing message:", repr(message)
-       while len(message) > 0:
-               wfh.write(message[0])
-               wfh.flush()
-               if message[0] == '\n':
-                       echo = rfh.read(2)
-                       expected_echo = '\r\n'
-               else:
-                       echo = rfh.read(1)
-                       expected_echo = message[0]
-               if echo != expected_echo:
-                       print "Gah, expected echo when writing", repr(message[0]), "but got", repr(echo)
-               message = message[1:]
-       print "  --> Sent and echoed."
+       wfh.write(message+'\r\n')
+       wfh.flush()
+       print "  --> Sent"
+       response = read_for_a_bit(rfh)
+       if response.find(message) == -1 and expect_echo:
+               raise LATClientException("Talking to DEC server, expected to find original message in echo but didn't")
+       return response
 
 class LATClient:
        def __init__(self, service = None, node = None, port = None,
@@ -98,19 +98,27 @@ class LATClient:
                self.sock.shutdown(2)
                self.sock.close()
                mopw, mopr = popen4('/usr/sbin/moprc '+self.server_name)
-               read_for_a_bit(mopr)
-               mopw.write('\n')
-               read_for_a_bit(mopr)
-               mopw.write(self.connect_password+'\n')
-               read_for_a_bit(mopr)
-               write_expecting_echo(mopr, mopw, 'grim reaper\n')
-               read_for_a_bit(mopr)
-               write_expecting_echo(mopr, mopw, 'set priv\n')
-               read_for_a_bit(mopr)
-               write_expecting_echo(mopr, mopw, self.priv_password+'\n')
-               read_for_a_bit(mopr)
-               write_expecting_echo(mopr, mopw, 'init del 0\n')
-               read_for_a_bit(mopr)
+               write_and_get_response(mopr, mopw, '')
+               r = write_and_get_response(mopr, mopw, self.connect_password, False)
+               if r.find('Enter username> ') == -1:
+                       print "Expected username prompt, got ", repr(r)
+                       raise LATClientException('failed to reboot server')
+               r = write_and_get_response(mopr, mopw, 'grim reaper')
+               if r.find('Local> ') == -1:
+                       print "Expected DEC server prompt, got ", repr(r)
+                       raise LATClientException('failed to reboot server')
+               r = write_and_get_response(mopr, mopw, 'set priv')
+               if r.find('Password> ') == -1:
+                       print "Expected priv password prompt, got ", repr(r)
+                       raise LATClientException('failed to reboot server')
+               r = write_and_get_response(mopr, mopw, self.priv_password, False)
+               if r.find('Local> ') == -1:
+                       print "Expected DEC server prompt, got ", repr(r)
+                       raise LATClientException('failed to reboot server')
+               r = write_and_get_response(mopr, mopw, 'init del 0')
+               if r.find('Target does not respond') == -1:
+                       print "Expected DEC server to die, got ", repr(r)
+                       raise LATClientException('failed to reboot server')
                mopr.close()
                mopw.close()
                print
index d86cc3f..9506daf 100644 (file)
@@ -2,6 +2,7 @@
 import re
 from CRC import do_crc
 from select import select
+import socket
 
 asynchronous_responses = [     '400', '401', # door open/closed
                                '610',        # switches changed

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