4 # Prior copyright probably rmurray, troup, joey, jgg -- weasel 2008
5 # Copyright (c) 2008 Peter Palfrader <peter@palfrader.org>
6 # Copyright (c) 2008 Joerg Jaspert <joerg@debian.org>
8 import userdir_gpg, userdir_ldap, sys, traceback, time, ldap, os, commands
11 import sha as sha1_module
13 from userdir_gpg import *
14 from userdir_ldap import *
16 # Error codes from /usr/include/sysexits.h
17 ReplyTo = ConfModule.replyto;
18 PingFrom = ConfModule.pingfrom;
19 ChPassFrom = ConfModule.chpassfrom;
20 ChangeFrom = ConfModule.changefrom;
21 ReplayCacheFile = ConfModule.replaycachefile;
22 SSHFingerprintFile = ConfModule.fingerprintfile
24 UUID_FORMAT = '[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}'
27 EX_PERMFAIL = 65; # EX_DATAERR
28 Error = 'Message Error';
38 SSHFingerprint = re.compile('^(\d+) ([0-9a-f\:]{47}) (.+)$')
39 SSHRSA1Match = re.compile('^^(.* )?\d+ \d+ \d+')
41 GenderTable = {"male": 1,
49 ArbChanges = {"c": "..",
51 "facsimileTelephoneNumber": ".*",
52 "telephoneNumber": ".*",
53 "postalAddress": ".*",
56 "emailForward": "^([^<>@]+@.+)?$",
57 "jabberJID": "^([^<>@]+@.+)?$",
62 "birthDate": "^([0-9]{4})([01][0-9])([0-3][0-9])$",
63 "mailDisableMessage": ".*",
64 "mailGreylisting": "^(TRUE|FALSE)$",
65 "mailCallout": "^(TRUE|FALSE)$",
67 "gender": "^(1|2|9|male|female|unspecified)$",
70 DelItems = {"c": None,
72 "facsimileTelephoneNumber": None,
73 "telephoneNumber": None,
74 "postalAddress": None,
86 "sshRSAAuthKey": None,
87 "sshDSAAuthKey": None,
89 "mailGreylisting": None,
93 "mailWhitelist": None,
94 "mailDisableMessage": None,
99 F = open(PassDir+"/key-hmac-"+pwd.getpwuid(os.getuid())[0],"r");
100 key = F.readline().strip()
103 return hmac.new(key, str, sha1_module).hexdigest()
107 # Decode a GPS location from some common forms
108 def LocDecode(Str,Dir):
109 # Check for Decimal degrees, DGM, or DGMS
110 if re.match("^[+-]?[\d.]+$",Str) != None:
113 Deg = '0'; Min = None; Sec = None; Dr = Dir[0];
115 # Check for DDDxMM.MMMM where x = [nsew]
116 Match = re.match("^(\d+)(["+Dir+"])([\d.]+)$",Str);
119 Deg = G[0]; Min = G[2]; Dr = G[1];
122 Match = re.match("^([\d.]+) ?(["+Dir+"])$",Str);
125 Deg = G[0]; Dr = G[1];
127 # Check for DD:MM.MM x
128 Match = re.match("^(\d+):([\d.]+) ?(["+Dir+"])$",Str);
131 Deg = G[0]; Min = G[1]; Dr = G[2];
133 # Check for DD:MM:SS.SS x
134 Match = re.match("^(\d+):(\d+):([\d.]+) ?(["+Dir+"])$",Str);
137 Deg = G[0]; Min = G[1]; Sec = G[2]; Dr = G[3];
141 raise "Failed","Bad degrees";
142 if Min != None and float(Min) > 60:
143 raise "Failed","Bad minutes";
144 if Sec != None and float(Sec) > 60:
145 raise "Failed","Bad seconds";
147 # Pad on an extra leading 0 to disambiguate small numbers
148 if len(Deg) <= 1 or Deg[1] == '.':
150 if Min != None and (len(Min) <= 1 or Min[1] == '.'):
152 if Sec != None and (len(Sec) <= 1 or Sec[1] == '.'):
155 # Construct a DGM/DGMS type value from the components.
166 # Handle changing a set of arbitary fields
168 def DoArbChange(Str,Attrs):
169 Match = re.match("^([^ :]+): (.*)$",Str);
174 attrName = G[0].lower();
175 for i in ArbChanges.keys():
176 if i.lower() == attrName:
179 if ArbChanges.has_key(attrName) == 0:
182 if re.match(ArbChanges[attrName],G[1]) == None:
183 raise Error, "Item does not match the required format"+ArbChanges[attrName];
186 if attrName == 'gender':
187 if G[1] not in GenderTable:
188 raise Error, "Gender not found in table"
189 value = GenderTable[G[1]]
191 # if attrName == 'birthDate':
192 # (re.match("^([0-9]{4})([01][0-9])([0-3][0-9])$",G[1]) {
193 # $bd_yr = $1; $bd_mo = $2; $bd_day = $3;
194 # if ($bd_mo > 0 and $bd_mo <= 12 and $bd_day > 0) {
196 # if ($bd_day == 29 and ($bd_yr == 0 or ($bd_yr % 4 == 0 && ($bd_yr % 100 != 0 || $bd_yr % 400 == 0)))) {
198 # } elsif ($bd_day <= 28) {
201 # } elsif ($bd_mo == 4 or $bd_mo == 6 or $bd_mo == 9 or $bd_mo == 11) {
202 # if ($bd_day <= 30) {
206 # if ($bd_day <= 31) {
211 # } elsif (not defined($query->param('birthdate')) or $query->param('birthdate') =~ /^\s*$/) {
214 Attrs.append((ldap.MOD_REPLACE,attrName,value));
215 return "Changed entry %s to %s"%(attrName,value);
217 # Handle changing a set of arbitary fields
219 def DoDel(Str,Attrs):
220 Match = re.match("^del (.*)$",Str);
225 attrName = G[0].lower();
226 for i in DelItems.keys():
227 if i.lower() == attrName:
230 if DelItems.has_key(attrName) == 0:
231 return "Cannot erase entry %s"%(attrName);
233 Attrs.append((ldap.MOD_DELETE,attrName,None));
234 return "Removed entry %s"%(attrName);
236 # Handle a position change message, the line format is:
237 # Lat: -12412.23 Long: +12341.2342
238 def DoPosition(Str,Attrs):
239 Match = re.match("^lat: ([+\-]?[\d:.ns]+(?: ?[ns])?) long: ([+\-]?[\d:.ew]+(?: ?[ew])?)$", Str.lower())
245 sLat = LocDecode(G[0],"ns");
246 sLong = LocDecode(G[1],"ew");
247 Lat = DecDegree(sLat,1);
248 Long = DecDegree(sLong,1);
250 raise Error, "Positions were found, but they are not correctly formed";
252 Attrs.append((ldap.MOD_REPLACE,"latitude",sLat));
253 Attrs.append((ldap.MOD_REPLACE,"longitude",sLong));
254 return "Position set to %s/%s (%s/%s decimal degrees)"%(sLat,sLong,Lat,Long);
256 # Load bad ssh fingerprints
258 f = open(SSHFingerprintFile, "r")
260 FingerprintLine = re.compile('^([0-9a-f\:]{47}).*$')
261 for line in f.readlines():
262 Match = FingerprintLine.match(line)
263 if Match is not None:
268 # Handle an SSH authentication key, the line format is:
269 # [options] 1024 35 13188913666680[..] [comment]
270 def DoSSH(Str, Attrs, badkeys, uid):
271 Match = SSH2AuthSplit.match(Str);
277 Match = SSHRSA1Match.match(Str)
278 if Match is not None:
279 return "RSA1 keys not supported anymore"
282 (fd, path) = tempfile.mkstemp(".pub", "sshkeytry", "/tmp")
284 f.write("%s\n" % (Str))
286 cmd = "/usr/bin/ssh-keygen -l -f %s < /dev/null" % (path)
287 (result, output) = commands.getstatusoutput(cmd)
290 raise Error, "ssh-keygen -l invocation failed!\n%s\n" % (output)
294 Date = time.strftime("%a, %d %b %Y %H:%M:%S +0000",time.gmtime(time.time()))
295 ErrReplyHead = "From: %s\nCc: %s\nReply-To: %s\nDate: %s\n" % (os.environ['SENDER'],os.environ['SENDER'],ReplyTo,Date)
297 Subst["__ADMIN__"] = ReplyTo
298 Subst["__USER__"] = uid
300 Match = SSHFingerprint.match(output)
306 Subst["__ERROR__"] = "SSH keysize %s is below limit 1024" % (g[0])
307 ErrReply = TemplateSubst(Subst,open(TemplatesDir+"admin-info","r").read())
309 Child = os.popen("/usr/sbin/sendmail -t","w")
310 Child.write(ErrReplyHead)
311 Child.write(ErrReply)
312 if Child.close() != None:
313 raise Error, "Sendmail gave a non-zero return code"
315 sys.exit(EX_TEMPFAIL)
317 # And now break and stop processing input, which sends a reply to the user.
318 raise Error, "SSH keys must have at least 1024 bits, processing halted, NOTHING MODIFIED AT ALL"
319 elif g[1] in badkeys:
322 Subst["__ERROR__"] = "SSH key with fingerprint %s known as bad key" % (g[1])
323 ErrReply = TemplateSubst(Subst,open(TemplatesDir+"admin-info","r").read())
325 Child = os.popen("/usr/sbin/sendmail -t","w")
326 Child.write(ErrReplyHead)
327 Child.write(ErrReply)
328 if Child.close() != None:
329 raise Error, "Sendmail gave a non-zero return code"
331 sys.exit(EX_TEMPFAIL)
333 # And now break and stop processing input, which sends a reply to the user.
334 raise Error, "Submitted SSH Key known to be bad and insecure, processing halted, NOTHING MODIFIED AT ALL"
336 if (typekey == "dss"):
337 return "DSA keys not accepted anymore"
341 Attrs.append((ldap.MOD_ADD,"sshRSAAuthKey",Str));
342 return "SSH Key added "+FormatSSHAuth(Str);
344 Attrs.append((ldap.MOD_REPLACE,"sshRSAAuthKey",Str));
346 return "SSH Keys replaced with "+FormatSSHAuth(Str);
348 # Handle changing a dns entry
349 # host IN A 12.12.12.12
350 # host IN AAAA 1234::5678
351 # host IN CNAME foo.bar. <- Trailing dot is required
352 # host IN MX foo.bar. <- Trailing dot is required
353 def DoDNS(Str,Attrs,DnRecord):
354 cnamerecord = re.match("^[-\w]+\s+IN\s+CNAME\s+([-\w.]+\.)$",Str,re.IGNORECASE)
355 arecord = re.match('^[-\w]+\s+IN\s+A\s+(\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})$',Str,re.IGNORECASE)
356 mxrecord = re.match("^[-\w]+\s+IN\s+MX\s+(\d{1,3})\s+([-\w.]+\.)$",Str,re.IGNORECASE)
357 #aaaarecord = re.match('^[-\w]+\s+IN\s+AAAA\s+((?:[0-9a-f]{1,4})(?::[0-9a-f]{1,4})*(?::(?:(?::[0-9a-f]{1,4})*|:))?)$',Str,re.IGNORECASE)
358 aaaarecord = re.match('^[-\w]+\s+IN\s+AAAA\s+([A-F0-9:]{2,39})$',Str,re.IGNORECASE)
360 if cnamerecord == None and\
362 mxrecord == None and\
366 # Check if the name is already taken
367 G = re.match('^([-\w+]+)\s',Str)
369 raise Error, "Hostname not found although we already passed record syntax checks"
370 hostname = G.group(1)
372 # Check for collisions
374 # [JT 20070409 - search for both tab and space suffixed hostnames
375 # since we accept either. It'd probably be better to parse the
376 # incoming string in order to construct what we feed LDAP rather
377 # than just passing it through as is.]
378 filter = "(|(dnsZoneEntry=%s *)(dnsZoneEntry=%s *))" % (hostname, hostname)
379 Rec = l.search_s(BaseDn,ldap.SCOPE_ONELEVEL,filter,["uid"]);
381 if GetAttr(x,"uid") != GetAttr(DnRecord,"uid"):
382 return "DNS entry is already owned by " + GetAttr(x,"uid")
388 if DNS.has_key(hostname):
389 return "CNAME and other RR types not allowed: "+Str
393 if DNS.has_key(hostname) and DNS[hostname] == 2:
394 return "CNAME and other RR types not allowed: "+Str
398 if cnamerecord != None:
399 sanitized = "%s IN CNAME %s" % (hostname, cnamerecord.group(1))
400 elif arecord != None:
401 ipaddress = arecord.group(1)
402 for quad in ipaddress.split('.'):
403 if not (int(quad) >=0 and int(quad) <= 255):
404 return "Invalid quad %s in IP address %s in line %s" %(quad, ipaddress, Str)
405 sanitized = "%s IN A %s"% (hostname, ipaddress)
406 elif mxrecord != None:
407 priority = mxrecord.group(1)
408 mx = mxrecord.group(2)
409 sanitized = "%s IN MX %s %s" % (hostname, priority, mx)
410 elif aaaarecord != None:
411 ipv6address = aaaarecord.group(1)
412 parts = ipv6address.split(':')
414 return "Invalid IPv6 address (%s): too many parts"%(ipv6address)
416 return "Invalid IPv6 address (%s): too few parts"%(ipv6address)
421 seenEmptypart = False
424 return "Invalid IPv6 address (%s): part %s is longer than 4 characters"%(ipv6address, p)
427 return "Invalid IPv6 address (%s): more than one :: (nothing in between colons) is not allowed"%(ipv6address)
429 sanitized = "%s IN AAAA %s" % (hostname, ipv6address)
431 raise Error, "None of the types I recognize was it. I shouldn't be here. confused."
434 Attrs.append((ldap.MOD_ADD,"dnsZoneEntry",sanitized));
435 return "DNS Entry added "+sanitized;
437 Attrs.append((ldap.MOD_REPLACE,"dnsZoneEntry",sanitized));
439 return "DNS Entry replaced with "+sanitized;
441 # Handle an RBL list (mailRBL, mailRHSBL, mailWhitelist)
442 def DoRBL(Str,Attrs):
443 Match = re.compile('^mail(rbl|rhsbl|whitelist) ([-a-z0-9.]+)$').match(Str.lower())
447 if Match.group(1) == "rbl":
449 if Match.group(1) == "rhsbl":
451 if Match.group(1) == "whitelist":
452 Key = "mailWhitelist"
453 Host = Match.group(2)
456 if SeenList.has_key(Key):
457 Attrs.append((ldap.MOD_ADD,Key,Host))
458 return "%s added %s" % (Key,Host)
460 Attrs.append((ldap.MOD_REPLACE,Key,Host))
462 return "%s replaced with %s" % (Key,Host)
464 # Handle a ConfirmSudoPassword request
465 def DoConfirmSudopassword(Str):
466 Match = re.compile('^confirm sudopassword ('+UUID_FORMAT+') ([a-z0-9,*]+) ([0-9a-f]{40})$').match(Str.lower())
470 uuid = Match.group(1)
471 hosts = Match.group(2)
472 hmac = Match.group(3)
475 SudoPasswd[uuid] = (hosts, hmac)
476 return "got confirm for sudo password %s on host(s) %s, auth code %s" % (uuid,hosts, hmac)
478 def FinishConfirmSudopassword(l, uid, Attrs):
482 res = l.search_s(BaseDn,ldap.SCOPE_ONELEVEL,"uid="+uid, ['sudoPassword']);
484 raise Error, "Not exactly one hit when searching for user"
485 if res[0][1].has_key('sudoPassword'):
486 inldap = res[0][1]['sudoPassword']
492 Match = re.compile('^('+UUID_FORMAT+') (confirmed|unconfirmed) ([a-z0-9,*]+) ([^ ]+)$').match(entry.lower())
494 raise Error, "Could not parse existing sudopasswd entry"
495 uuid = Match.group(1)
496 status = Match.group(2)
497 hosts = Match.group(3)
498 cryptedpass = Match.group(4)
500 if SudoPasswd.has_key(uuid):
501 confirmedHosts = SudoPasswd[uuid][0]
502 confirmedHmac = SudoPasswd[uuid][1]
503 if status == "confirmed":
504 result = result + "Entry %s for sudo password on hosts %s already confirmed.\n"%(uuid, hosts)
505 elif confirmedHosts != hosts:
506 result = result + "Entry %s hostlist mismatch (%s vs. %s).\n"%(uuid, hosts, confirmedHosts)
507 elif make_hmac(':'.join([uuid, hosts, cryptedpass])) == confirmedHmac:
508 result = result + "Entry %s for sudo password on hosts %s now confirmed.\n"%(uuid, hosts)
511 result = result + "Entry %s for sudo password on hosts %s HMAC verify failed.\n"%(uuid, hosts)
514 newentry = " ".join([uuid, status, hosts, cryptedpass])
515 if len(newldap) == 0:
516 newldap.append((ldap.MOD_REPLACE,"sudoPassword",newentry))
518 newldap.append((ldap.MOD_ADD,"sudoPassword",newentry))
520 for entry in SudoPasswd:
521 result = result + "Entry %s that you confirm is not listed in ldap."%(entry)
523 for entry in newldap:
528 # Handle an [almost] arbitary change
529 def HandleChange(Reply,DnRecord,Key):
531 Lines = re.split("\n *\r?",PlainText);
542 # Try to process a command line
543 Result = Result + "> "+Line+"\n";
549 badkeys = LoadBadSSH()
550 Res = DoPosition(Line,Attrs) or DoDNS(Line,Attrs,DnRecord) or \
551 DoArbChange(Line,Attrs) or DoSSH(Line,Attrs,badkeys,GetAttr(DnRecord,"uid")) or \
552 DoDel(Line,Attrs) or DoRBL(Line,Attrs) or DoConfirmSudopassword(Line)
555 Result = Result + "==> %s: %s\n" %(sys.exc_type,sys.exc_value);
557 # Fail, if someone tries to send someone elses signed email to the
558 # daemon then we want to abort ASAP.
561 Result = Result + "Command is not understood. Halted - no changes committed\n";
563 Result = Result + Res + "\n";
565 # Connect to the ldap server
567 F = open(PassDir+"/pass-"+pwd.getpwuid(os.getuid())[0],"r");
568 AccessPass = F.readline().strip().split(" ")
571 l.simple_bind_s("uid="+AccessPass[0]+","+BaseDn,AccessPass[1]);
572 oldAttrs = l.search_s(BaseDn,ldap.SCOPE_ONELEVEL,"uid="+GetAttr(DnRecord,"uid"));
573 if ((GetAttr(oldAttrs[0],"userPassword").find("*LK*") != -1)
574 or GetAttr(oldAttrs[0],"userPassword").startswith("!")):
575 raise Error, "This account is locked";
577 Res = FinishConfirmSudopassword(l, GetAttr(DnRecord,"uid"), Attrs)
578 Result = Result + Res + "\n";
581 Result = Result + "FinishConfirmSudopassword raised an error (%s) - no changes committed\n"%(e);
583 Dn = "uid=" + GetAttr(DnRecord,"uid") + "," + BaseDn;
584 if CommitChanges == 1:
585 l.modify_s(Dn,Attrs);
589 Attrs = l.search_s(BaseDn,ldap.SCOPE_ONELEVEL,"uid="+GetAttr(DnRecord,"uid"));
591 raise Error, "User not found"
592 Attribs = GPGEncrypt(PrettyShow(Attrs[0])+"\n","0x"+Key[1],Key[4]);
595 Subst["__FROM__"] = ChangeFrom;
596 Subst["__EMAIL__"] = EmailAddress(DnRecord);
597 Subst["__ADMIN__"] = ReplyTo;
598 Subst["__RESULT__"] = Result;
599 Subst["__ATTR__"] = Attribs;
601 return Reply + TemplateSubst(Subst,open(TemplatesDir+"change-reply","r").read());
603 # Handle ping handles an email sent to the 'ping' address (ie this program
604 # called with a ping argument) It replies with a dump of the public records.
605 def HandlePing(Reply,DnRecord,Key):
607 Subst["__FROM__"] = PingFrom;
608 Subst["__EMAIL__"] = EmailAddress(DnRecord);
609 Subst["__LDAPFIELDS__"] = PrettyShow(DnRecord);
610 Subst["__ADMIN__"] = ReplyTo;
612 return Reply + TemplateSubst(Subst,open(TemplatesDir+"ping-reply","r").read());
614 # Handle a change password email sent to the change password address
615 # (this program called with the chpass argument)
616 def HandleChPass(Reply,DnRecord,Key):
617 # Generate a random password
618 Password = GenPass();
619 Pass = HashPass(Password);
621 # Use GPG to encrypt it
622 Message = GPGEncrypt("Your new password is '" + Password + "'\n",\
627 raise Error, "Unable to generate the encrypted reply, gpg failed.";
630 Type = "Your message was encrypted using PGP 2.x\ncompatibility mode.";
632 Type = "Your message was encrypted using GPG (OpenPGP)\ncompatibility "\
633 "mode, without IDEA. This message cannot be decoded using PGP 2.x";
636 Subst["__FROM__"] = ChPassFrom;
637 Subst["__EMAIL__"] = EmailAddress(DnRecord);
638 Subst["__CRYPTTYPE__"] = Type;
639 Subst["__PASSWORD__"] = Message;
640 Subst["__ADMIN__"] = ReplyTo;
641 Reply = Reply + TemplateSubst(Subst,open(TemplatesDir+"passwd-changed","r").read());
643 # Connect to the ldap server
645 F = open(PassDir+"/pass-"+pwd.getpwuid(os.getuid())[0],"r");
646 AccessPass = F.readline().strip().split(" ")
648 l.simple_bind_s("uid="+AccessPass[0]+","+BaseDn,AccessPass[1]);
650 # Check for a locked account
651 Attrs = l.search_s(BaseDn,ldap.SCOPE_ONELEVEL,"uid="+GetAttr(DnRecord,"uid"));
652 if (GetAttr(Attrs[0],"userPassword").find("*LK*") != -1) \
653 or GetAttr(Attrs[0],"userPassword").startswith("!"):
654 raise Error, "This account is locked";
656 # Modify the password
657 Rec = [(ldap.MOD_REPLACE,"userPassword","{crypt}"+Pass),
658 (ldap.MOD_REPLACE,"shadowLastChange",str(int(time.time()/24/60/60)))];
659 Dn = "uid=" + GetAttr(DnRecord,"uid") + "," + BaseDn;
664 # Start of main program
666 # Drop messages from a mailer daemon.
667 if os.environ.has_key('SENDER') == 0 or len(os.environ['SENDER']) == 0:
670 ErrMsg = "Indeterminate Error";
671 ErrType = EX_TEMPFAIL;
673 # Startup the replay cache
674 ErrType = EX_TEMPFAIL;
675 ErrMsg = "Failed to initialize the replay cache:";
676 RC = ReplayCache(ReplayCacheFile);
680 ErrType = EX_PERMFAIL;
681 ErrMsg = "Failed to understand the email or find a signature:";
682 Email = mimetools.Message(sys.stdin,0);
683 Msg = GetClearSig(Email);
685 ErrMsg = "Message is not PGP signed:"
686 if Msg[0].find("-----BEGIN PGP SIGNED MESSAGE-----") == -1 and \
687 Msg[0].find("-----BEGIN PGP MESSAGE-----") == -1:
688 raise Error, "No PGP signature";
690 # Check the signature
691 ErrMsg = "Unable to check the signature or the signature was invalid:";
692 Res = GPGCheckSig(Msg[0]);
698 raise Error, "Null signature text";
700 # Extract the plain message text in the event of mime encoding
702 ErrMsg = "Problem stripping MIME headers from the decoded message"
705 Index = Res[3].index("\n\n") + 2;
707 Index = Res[3].index("\n\r\n") + 3;
708 PlainText = Res[3][Index:];
712 # Check the signature against the replay cache
713 ErrMsg = "The replay cache rejected your message. Check your clock!";
714 Rply = RC.Check(Res[1]);
718 # Connect to the ldap server
719 ErrType = EX_TEMPFAIL;
720 ErrMsg = "An error occured while performing the LDAP lookup";
723 l.simple_bind_s("","");
725 # Search for the matching key fingerprint
726 Attrs = l.search_s(BaseDn,ldap.SCOPE_ONELEVEL,"keyFingerPrint=" + Res[2][1]);
728 ErrType = EX_PERMFAIL;
730 raise Error, "Key not found"
732 raise Error, "Oddly your key fingerprint is assigned to more than one account.."
736 # Determine the sender address
737 ErrMsg = "A problem occured while trying to formulate the reply";
738 Sender = Email.getheader("Reply-To");
740 Sender = Email.getheader("From");
742 raise Error, "Unable to determine the sender's address";
745 Date = time.strftime("%a, %d %b %Y %H:%M:%S +0000",time.gmtime(time.time()));
746 Reply = "To: %s\nReply-To: %s\nDate: %s\n" % (Sender,ReplyTo,Date);
749 if sys.argv[1] == "ping":
750 Reply = HandlePing(Reply,Attrs[0],Res[2]);
751 elif sys.argv[1] == "chpass":
752 if PlainText.strip().find("Please change my Debian password") != 0:
753 raise Error,"Please send a signed message where the first line of text is the string 'Please change my Debian password'";
754 Reply = HandleChPass(Reply,Attrs[0],Res[2]);
755 elif sys.argv[1] == "change":
756 Reply = HandleChange(Reply,Attrs[0],Res[2]);
759 raise Error, "Incorrect Invokation";
761 # Send the message through sendmail
762 ErrMsg = "A problem occured while trying to send the reply";
763 Child = os.popen("/usr/sbin/sendmail -t","w");
764 # Child = os.popen("cat","w");
766 if Child.close() != None:
767 raise Error, "Sendmail gave a non-zero return code";
771 Date = time.strftime("%a, %d %b %Y %H:%M:%S +0000",time.gmtime(time.time()));
772 ErrReplyHead = "To: %s\nReply-To: %s\nDate: %s\n" % (os.environ['SENDER'],ReplyTo,Date);
776 Subst["__ERROR__"] = ErrMsg;
777 Subst["__ADMIN__"] = ReplyTo;
779 Trace = "==> %s: %s\n" %(sys.exc_type,sys.exc_value);
780 List = traceback.extract_tb(sys.exc_traceback);
782 Trace = Trace + "Python Stack Trace:\n";
784 Trace = Trace + " %s %s:%u: %s\n" %(x[2],x[0],x[1],x[3]);
786 Subst["__TRACE__"] = Trace;
788 # Try to send the bounce
790 ErrReply = TemplateSubst(Subst,open(TemplatesDir+"error-reply","r").read());
792 Child = os.popen("/usr/sbin/sendmail -t","w");
793 Child.write(ErrReplyHead);
794 Child.write(ErrReply);
795 if Child.close() != None:
796 raise Error, "Sendmail gave a non-zero return code";
798 sys.exit(EX_TEMPFAIL);
800 if ErrType != EX_PERMFAIL: