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 from userdir_gpg import *
12 from userdir_ldap import *
14 # Error codes from /usr/include/sysexits.h
15 ReplyTo = ConfModule.replyto;
16 PingFrom = ConfModule.pingfrom;
17 ChPassFrom = ConfModule.chpassfrom;
18 ChangeFrom = ConfModule.changefrom;
19 ReplayCacheFile = ConfModule.replaycachefile;
20 SSHFingerprintFile = ConfModule.fingerprintfile
22 UUID_FORMAT = '[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}'
25 EX_PERMFAIL = 65; # EX_DATAERR
26 Error = 'Message Error';
36 SSHFingerprint = re.compile('^(\d+) ([0-9a-f\:]{47}) (.+)$')
37 SSHRSA1Match = re.compile('^^(.* )?\d+ \d+ \d+')
39 GenderTable = {"male": 1,
47 ArbChanges = {"c": "..",
49 "facsimileTelephoneNumber": ".*",
50 "telephoneNumber": ".*",
51 "postalAddress": ".*",
54 "emailForward": "^([^<>@]+@.+)?$",
55 "jabberJID": "^([^<>@]+@.+)?$",
60 "birthDate": "^([0-9]{4})([01][0-9])([0-3][0-9])$",
61 "mailDisableMessage": ".*",
62 "mailGreylisting": "^(TRUE|FALSE)$",
63 "mailCallout": "^(TRUE|FALSE)$",
65 "gender": "^(1|2|9|male|female|unspecified)$",
68 DelItems = {"c": None,
70 "facsimileTelephoneNumber": None,
71 "telephoneNumber": None,
72 "postalAddress": None,
84 "sshRSAAuthKey": None,
85 "sshDSAAuthKey": None,
87 "mailGreylisting": None,
91 "mailWhitelist": None,
92 "mailDisableMessage": None,
97 F = open(PassDir+"/key-hmac","r");
101 return hmac.new(key, str, hashlib.sha1).hexdigest
105 # Decode a GPS location from some common forms
106 def LocDecode(Str,Dir):
107 # Check for Decimal degrees, DGM, or DGMS
108 if re.match("^[+-]?[\d.]+$",Str) != None:
111 Deg = '0'; Min = None; Sec = None; Dr = Dir[0];
113 # Check for DDDxMM.MMMM where x = [nsew]
114 Match = re.match("^(\d+)(["+Dir+"])([\d.]+)$",Str);
117 Deg = G[0]; Min = G[2]; Dr = G[1];
120 Match = re.match("^([\d.]+) ?(["+Dir+"])$",Str);
123 Deg = G[0]; Dr = G[1];
125 # Check for DD:MM.MM x
126 Match = re.match("^(\d+):([\d.]+) ?(["+Dir+"])$",Str);
129 Deg = G[0]; Min = G[1]; Dr = G[2];
131 # Check for DD:MM:SS.SS x
132 Match = re.match("^(\d+):(\d+):([\d.]+) ?(["+Dir+"])$",Str);
135 Deg = G[0]; Min = G[1]; Sec = G[2]; Dr = G[3];
139 raise "Failed","Bad degrees";
140 if Min != None and float(Min) > 60:
141 raise "Failed","Bad minutes";
142 if Sec != None and float(Sec) > 60:
143 raise "Failed","Bad seconds";
145 # Pad on an extra leading 0 to disambiguate small numbers
146 if len(Deg) <= 1 or Deg[1] == '.':
148 if Min != None and (len(Min) <= 1 or Min[1] == '.'):
150 if Sec != None and (len(Sec) <= 1 or Sec[1] == '.'):
153 # Construct a DGM/DGMS type value from the components.
164 # Handle changing a set of arbitary fields
166 def DoArbChange(Str,Attrs):
167 Match = re.match("^([^ :]+): (.*)$",Str);
172 attrName = G[0].lower();
173 for i in ArbChanges.keys():
174 if i.lower() == attrName:
177 if ArbChanges.has_key(attrName) == 0:
180 if re.match(ArbChanges[attrName],G[1]) == None:
181 raise Error, "Item does not match the required format"+ArbChanges[attrName];
184 if attrName == 'gender':
185 if G[1] not in GenderTable:
186 raise Error, "Gender not found in table"
187 value = GenderTable[G[1]]
189 # if attrName == 'birthDate':
190 # (re.match("^([0-9]{4})([01][0-9])([0-3][0-9])$",G[1]) {
191 # $bd_yr = $1; $bd_mo = $2; $bd_day = $3;
192 # if ($bd_mo > 0 and $bd_mo <= 12 and $bd_day > 0) {
194 # if ($bd_day == 29 and ($bd_yr == 0 or ($bd_yr % 4 == 0 && ($bd_yr % 100 != 0 || $bd_yr % 400 == 0)))) {
196 # } elsif ($bd_day <= 28) {
199 # } elsif ($bd_mo == 4 or $bd_mo == 6 or $bd_mo == 9 or $bd_mo == 11) {
200 # if ($bd_day <= 30) {
204 # if ($bd_day <= 31) {
209 # } elsif (not defined($query->param('birthdate')) or $query->param('birthdate') =~ /^\s*$/) {
212 Attrs.append((ldap.MOD_REPLACE,attrName,value));
213 return "Changed entry %s to %s"%(attrName,value);
215 # Handle changing a set of arbitary fields
217 def DoDel(Str,Attrs):
218 Match = re.match("^del (.*)$",Str);
223 attrName = G[0].lower();
224 for i in DelItems.keys():
225 if i.lower() == attrName:
228 if DelItems.has_key(attrName) == 0:
229 return "Cannot erase entry %s"%(attrName);
231 Attrs.append((ldap.MOD_DELETE,attrName,None));
232 return "Removed entry %s"%(attrName);
234 # Handle a position change message, the line format is:
235 # Lat: -12412.23 Long: +12341.2342
236 def DoPosition(Str,Attrs):
237 Match = re.match("^lat: ([+\-]?[\d:.ns]+(?: ?[ns])?) long: ([+\-]?[\d:.ew]+(?: ?[ew])?)$", Str.lower())
243 sLat = LocDecode(G[0],"ns");
244 sLong = LocDecode(G[1],"ew");
245 Lat = DecDegree(sLat,1);
246 Long = DecDegree(sLong,1);
248 raise Error, "Positions were found, but they are not correctly formed";
250 Attrs.append((ldap.MOD_REPLACE,"latitude",sLat));
251 Attrs.append((ldap.MOD_REPLACE,"longitude",sLong));
252 return "Position set to %s/%s (%s/%s decimal degrees)"%(sLat,sLong,Lat,Long);
254 # Load bad ssh fingerprints
256 f = open(SSHFingerprintFile, "r")
258 FingerprintLine = re.compile('^([0-9a-f\:]{47}).*$')
259 for line in f.readlines():
260 Match = FingerprintLine.match(line)
261 if Match is not None:
266 # Handle an SSH authentication key, the line format is:
267 # [options] 1024 35 13188913666680[..] [comment]
268 def DoSSH(Str, Attrs, badkeys, uid):
269 Match = SSH2AuthSplit.match(Str);
275 Match = SSHRSA1Match.match(Str)
276 if Match is not None:
277 return "RSA1 keys not supported anymore"
280 (fd, path) = tempfile.mkstemp(".pub", "sshkeytry", "/tmp")
282 f.write("%s\n" % (Str))
284 cmd = "/usr/bin/ssh-keygen -l -f %s < /dev/null" % (path)
285 (result, output) = commands.getstatusoutput(cmd)
288 raise Error, "ssh-keygen -l invocation failed!\n%s\n" % (output)
292 Date = time.strftime("%a, %d %b %Y %H:%M:%S +0000",time.gmtime(time.time()))
293 ErrReplyHead = "From: %s\nCc: %s\nReply-To: %s\nDate: %s\n" % (os.environ['SENDER'],os.environ['SENDER'],ReplyTo,Date)
295 Subst["__ADMIN__"] = ReplyTo
296 Subst["__USER__"] = uid
298 Match = SSHFingerprint.match(output)
304 Subst["__ERROR__"] = "SSH keysize %s is below limit 1024" % (g[0])
305 ErrReply = TemplateSubst(Subst,open(TemplatesDir+"admin-info","r").read())
307 Child = os.popen("/usr/sbin/sendmail -t","w")
308 Child.write(ErrReplyHead)
309 Child.write(ErrReply)
310 if Child.close() != None:
311 raise Error, "Sendmail gave a non-zero return code"
313 sys.exit(EX_TEMPFAIL)
315 # And now break and stop processing input, which sends a reply to the user.
316 raise Error, "SSH keys must have at least 1024 bits, processing halted, NOTHING MODIFIED AT ALL"
317 elif g[1] in badkeys:
320 Subst["__ERROR__"] = "SSH key with fingerprint %s known as bad key" % (g[1])
321 ErrReply = TemplateSubst(Subst,open(TemplatesDir+"admin-info","r").read())
323 Child = os.popen("/usr/sbin/sendmail -t","w")
324 Child.write(ErrReplyHead)
325 Child.write(ErrReply)
326 if Child.close() != None:
327 raise Error, "Sendmail gave a non-zero return code"
329 sys.exit(EX_TEMPFAIL)
331 # And now break and stop processing input, which sends a reply to the user.
332 raise Error, "Submitted SSH Key known to be bad and insecure, processing halted, NOTHING MODIFIED AT ALL"
334 if (typekey == "dss"):
335 return "DSA keys not accepted anymore"
339 Attrs.append((ldap.MOD_ADD,"sshRSAAuthKey",Str));
340 return "SSH Key added "+FormatSSHAuth(Str);
342 Attrs.append((ldap.MOD_REPLACE,"sshRSAAuthKey",Str));
344 return "SSH Keys replaced with "+FormatSSHAuth(Str);
346 # Handle changing a dns entry
347 # host IN A 12.12.12.12
348 # host IN AAAA 1234::5678
349 # host IN CNAME foo.bar. <- Trailing dot is required
350 # host IN MX foo.bar. <- Trailing dot is required
351 def DoDNS(Str,Attrs,DnRecord):
352 cnamerecord = re.match("^[-\w]+\s+IN\s+CNAME\s+([-\w.]+\.)$",Str,re.IGNORECASE)
353 arecord = re.match('^[-\w]+\s+IN\s+A\s+(\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})$',Str,re.IGNORECASE)
354 mxrecord = re.match("^[-\w]+\s+IN\s+MX\s+(\d{1,3})\s+([-\w.]+\.)$",Str,re.IGNORECASE)
355 #aaaarecord = re.match('^[-\w]+\s+IN\s+AAAA\s+((?:[0-9a-f]{1,4})(?::[0-9a-f]{1,4})*(?::(?:(?::[0-9a-f]{1,4})*|:))?)$',Str,re.IGNORECASE)
356 aaaarecord = re.match('^[-\w]+\s+IN\s+AAAA\s+([A-F0-9:]{2,39})$',Str,re.IGNORECASE)
358 if cnamerecord == None and\
360 mxrecord == None and\
364 # Check if the name is already taken
365 G = re.match('^([-\w+]+)\s',Str)
367 raise Error, "Hostname not found although we already passed record syntax checks"
368 hostname = G.group(1)
370 # Check for collisions
372 # [JT 20070409 - search for both tab and space suffixed hostnames
373 # since we accept either. It'd probably be better to parse the
374 # incoming string in order to construct what we feed LDAP rather
375 # than just passing it through as is.]
376 filter = "(|(dnsZoneEntry=%s *)(dnsZoneEntry=%s *))" % (hostname, hostname)
377 Rec = l.search_s(BaseDn,ldap.SCOPE_ONELEVEL,filter,["uid"]);
379 if GetAttr(x,"uid") != GetAttr(DnRecord,"uid"):
380 return "DNS entry is already owned by " + GetAttr(x,"uid")
386 if DNS.has_key(hostname):
387 return "CNAME and other RR types not allowed: "+Str
391 if DNS.has_key(hostname) and DNS[hostname] == 2:
392 return "CNAME and other RR types not allowed: "+Str
396 if cnamerecord != None:
397 sanitized = "%s IN CNAME %s" % (hostname, cnamerecord.group(1))
398 elif arecord != None:
399 ipaddress = arecord.group(1)
400 for quad in ipaddress.split('.'):
401 if not (int(quad) >=0 and int(quad) <= 255):
402 return "Invalid quad %s in IP address %s in line %s" %(quad, ipaddress, Str)
403 sanitized = "%s IN A %s"% (hostname, ipaddress)
404 elif mxrecord != None:
405 priority = mxrecord.group(1)
406 mx = mxrecord.group(2)
407 sanitized = "%s IN MX %s %s" % (hostname, priority, mx)
408 elif aaaarecord != None:
409 ipv6address = aaaarecord.group(1)
410 parts = ipv6address.split(':')
412 return "Invalid IPv6 address (%s): too many parts"%(ipv6address)
414 return "Invalid IPv6 address (%s): too few parts"%(ipv6address)
419 seenEmptypart = False
422 return "Invalid IPv6 address (%s): part %s is longer than 4 characters"%(ipv6address, p)
425 return "Invalid IPv6 address (%s): more than one :: (nothing in between colons) is not allowed"%(ipv6address)
427 sanitized = "%s IN AAAA %s" % (hostname, ipv6address)
429 raise Error, "None of the types I recognize was it. I shouldn't be here. confused."
432 Attrs.append((ldap.MOD_ADD,"dnsZoneEntry",sanitized));
433 return "DNS Entry added "+sanitized;
435 Attrs.append((ldap.MOD_REPLACE,"dnsZoneEntry",sanitized));
437 return "DNS Entry replaced with "+sanitized;
439 # Handle an RBL list (mailRBL, mailRHSBL, mailWhitelist)
440 def DoRBL(Str,Attrs):
441 Match = re.compile('^mail(rbl|rhsbl|whitelist) ([-a-z0-9.]+)$').match(Str.lower())
445 if Match.group(1) == "rbl":
447 if Match.group(1) == "rhsbl":
449 if Match.group(1) == "whitelist":
450 Key = "mailWhitelist"
451 Host = Match.group(2)
454 if SeenList.has_key(Key):
455 Attrs.append((ldap.MOD_ADD,Key,Host))
456 return "%s added %s" % (Key,Host)
458 Attrs.append((ldap.MOD_REPLACE,Key,Host))
460 return "%s replaced with %s" % (Key,Host)
462 # Handle a ConfirmSudoPassword request
463 def DoConfirmSudopassword(Str):
464 Match = re.compile('^confirm sudopassword ('+UUID_FORMAT+') ([a-z0-9,*]+) ([0-9a-f]{40})$').match(Str.lower())
468 uuid = Match.group(1)
469 hosts = Match.group(2)
470 hmac = Match.group(3)
473 SudoPasswd[uuid] = (hosts, hmac)
474 return "got confirm for sudo password %s on host(s) %s, auth code %s" % (uuid,hosts, hmac)
476 def FinishConfirmSudopassword(l, dn, Attrs):
480 res = l.search_s(BaseDn,ldap.SCOPE_ONELEVEL,"uid="+uid, ['sudoPassword']);
482 raise Error, "Not exactly one hit when searching for user"
484 if Attrs.has_key('sudoPassword'):
485 inldap = Attrs['sudoPassword']
491 Match = re.compile('^('+UUID_FORMAT+') (confirmed|unconfirmed) ([a-z0-9,*]+) ([^ ]+)$'),match(entry.lower())
493 raise Error, "Could not parse existing sudopasswd entry"
494 uuid = Match.group(1)
495 status = Match.group(2)
496 hosts = Match.group(3)
497 cryptedpass = Match.group(4)
499 if SudoPasswd.has_key(uuid):
500 confirmedHosts = SudoPasswd[uuid][0]
501 confirmedHmac = SudoPasswd[uuid][1]
502 if status == "confirmed":
503 result = result + "Entry %s for sudo password on hosts %s already confirmed.\n"%(uuid, hosts)
504 elif confirmedHosts != hosts:
505 result = result + "Entry %s hostlist mismatch (%s vs. %s).\n"%(uuid, hosts, confirmedHosts)
506 elif make_hmac(':'.join([uuid, hosts, cryptedpass])) == confirmedHmac:
507 result = result + "Entry %s for sudo password on hosts %s now confirmed.\n"%(uuid, hosts)
510 result = result + "Entry %s for sudo password on hosts %s HMAC verify failed.\n"%(uuid, hosts)
513 newentry = " ".join([uuid, status, hosts, cryptedpass])
515 Attrs.append((ldap.MOD_ADD,"sudoPassword",newentry))
517 Attrs.append((ldap.MOD_REPLACE,"sudoPassword",newentry))
520 for entry in SudoPasswd:
521 result = result + "Entry %s that you confirm is not listed in ldap."%(entry)
525 # Handle an [almost] arbitary change
526 def HandleChange(Reply,DnRecord,Key):
528 Lines = re.split("\n *\r?",PlainText);
539 # Try to process a command line
540 Result = Result + "> "+Line+"\n";
546 badkeys = LoadBadSSH()
547 Res = DoPosition(Line,Attrs) or DoDNS(Line,Attrs,DnRecord) or \
548 DoArbChange(Line,Attrs) or DoSSH(Line,Attrs,badkeys,GetAttr(DnRecord,"uid")) or \
549 DoDel(Line,Attrs) or DoRBL(Line,Attrs) or DoConfirmSudopassword(Line)
552 Result = Result + "==> %s: %s\n" %(sys.exc_type,sys.exc_value);
554 # Fail, if someone tries to send someone elses signed email to the
555 # daemon then we want to abort ASAP.
558 Result = Result + "Command is not understood. Halted - no changes committed\n";
560 Result = Result + Res + "\n";
562 # Connect to the ldap server
564 F = open(PassDir+"/pass-"+pwd.getpwuid(os.getuid())[0],"r");
565 AccessPass = F.readline().strip().split(" ")
568 l.simple_bind_s("uid="+AccessPass[0]+","+BaseDn,AccessPass[1]);
569 oldAttrs = l.search_s(BaseDn,ldap.SCOPE_ONELEVEL,"uid="+GetAttr(DnRecord,"uid"));
570 if ((GetAttr(oldAttrs[0],"userPassword").find("*LK*") != -1)
571 or GetAttr(oldAttrs[0],"userPassword").startswith("!")):
572 raise Error, "This account is locked";
574 Res = FinishConfirmSudopassword(l, GetAttr(DnRecord,"uid"), Attrs)
575 Result = Result + Res + "\n";
578 Result = Result + "ConfirmSudopassword raised an error - no changes committed\n";
580 Dn = "uid=" + GetAttr(DnRecord,"uid") + "," + BaseDn;
581 if CommitChanges == 1:
582 l.modify_s(Dn,Attrs);
586 Attrs = l.search_s(BaseDn,ldap.SCOPE_ONELEVEL,"uid="+GetAttr(DnRecord,"uid"));
588 raise Error, "User not found"
589 Attribs = GPGEncrypt(PrettyShow(Attrs[0])+"\n","0x"+Key[1],Key[4]);
592 Subst["__FROM__"] = ChangeFrom;
593 Subst["__EMAIL__"] = EmailAddress(DnRecord);
594 Subst["__ADMIN__"] = ReplyTo;
595 Subst["__RESULT__"] = Result;
596 Subst["__ATTR__"] = Attribs;
598 return Reply + TemplateSubst(Subst,open(TemplatesDir+"change-reply","r").read());
600 # Handle ping handles an email sent to the 'ping' address (ie this program
601 # called with a ping argument) It replies with a dump of the public records.
602 def HandlePing(Reply,DnRecord,Key):
604 Subst["__FROM__"] = PingFrom;
605 Subst["__EMAIL__"] = EmailAddress(DnRecord);
606 Subst["__LDAPFIELDS__"] = PrettyShow(DnRecord);
607 Subst["__ADMIN__"] = ReplyTo;
609 return Reply + TemplateSubst(Subst,open(TemplatesDir+"ping-reply","r").read());
611 # Handle a change password email sent to the change password address
612 # (this program called with the chpass argument)
613 def HandleChPass(Reply,DnRecord,Key):
614 # Generate a random password
615 Password = GenPass();
616 Pass = HashPass(Password);
618 # Use GPG to encrypt it
619 Message = GPGEncrypt("Your new password is '" + Password + "'\n",\
624 raise Error, "Unable to generate the encrypted reply, gpg failed.";
627 Type = "Your message was encrypted using PGP 2.x\ncompatibility mode.";
629 Type = "Your message was encrypted using GPG (OpenPGP)\ncompatibility "\
630 "mode, without IDEA. This message cannot be decoded using PGP 2.x";
633 Subst["__FROM__"] = ChPassFrom;
634 Subst["__EMAIL__"] = EmailAddress(DnRecord);
635 Subst["__CRYPTTYPE__"] = Type;
636 Subst["__PASSWORD__"] = Message;
637 Subst["__ADMIN__"] = ReplyTo;
638 Reply = Reply + TemplateSubst(Subst,open(TemplatesDir+"passwd-changed","r").read());
640 # Connect to the ldap server
642 F = open(PassDir+"/pass-"+pwd.getpwuid(os.getuid())[0],"r");
643 AccessPass = F.readline().strip().split(" ")
645 l.simple_bind_s("uid="+AccessPass[0]+","+BaseDn,AccessPass[1]);
647 # Check for a locked account
648 Attrs = l.search_s(BaseDn,ldap.SCOPE_ONELEVEL,"uid="+GetAttr(DnRecord,"uid"));
649 if (GetAttr(Attrs[0],"userPassword").find("*LK*") != -1) \
650 or GetAttr(Attrs[0],"userPassword").startswith("!"):
651 raise Error, "This account is locked";
653 # Modify the password
654 Rec = [(ldap.MOD_REPLACE,"userPassword","{crypt}"+Pass),
655 (ldap.MOD_REPLACE,"shadowLastChange",str(int(time.time()/24/60/60)))];
656 Dn = "uid=" + GetAttr(DnRecord,"uid") + "," + BaseDn;
661 # Start of main program
663 # Drop messages from a mailer daemon.
664 if os.environ.has_key('SENDER') == 0 or len(os.environ['SENDER']) == 0:
667 ErrMsg = "Indeterminate Error";
668 ErrType = EX_TEMPFAIL;
670 # Startup the replay cache
671 ErrType = EX_TEMPFAIL;
672 ErrMsg = "Failed to initialize the replay cache:";
673 RC = ReplayCache(ReplayCacheFile);
677 ErrType = EX_PERMFAIL;
678 ErrMsg = "Failed to understand the email or find a signature:";
679 Email = mimetools.Message(sys.stdin,0);
680 Msg = GetClearSig(Email);
682 ErrMsg = "Message is not PGP signed:"
683 if Msg[0].find("-----BEGIN PGP SIGNED MESSAGE-----") == -1 and \
684 Msg[0].find("-----BEGIN PGP MESSAGE-----") == -1:
685 raise Error, "No PGP signature";
687 # Check the signature
688 ErrMsg = "Unable to check the signature or the signature was invalid:";
689 Res = GPGCheckSig(Msg[0]);
695 raise Error, "Null signature text";
697 # Extract the plain message text in the event of mime encoding
699 ErrMsg = "Problem stripping MIME headers from the decoded message"
702 Index = Res[3].index("\n\n") + 2;
704 Index = Res[3].index("\n\r\n") + 3;
705 PlainText = Res[3][Index:];
709 # Check the signature against the replay cache
710 ErrMsg = "The replay cache rejected your message. Check your clock!";
711 Rply = RC.Check(Res[1]);
715 # Connect to the ldap server
716 ErrType = EX_TEMPFAIL;
717 ErrMsg = "An error occured while performing the LDAP lookup";
720 l.simple_bind_s("","");
722 # Search for the matching key fingerprint
723 Attrs = l.search_s(BaseDn,ldap.SCOPE_ONELEVEL,"keyFingerPrint=" + Res[2][1]);
725 ErrType = EX_PERMFAIL;
727 raise Error, "Key not found"
729 raise Error, "Oddly your key fingerprint is assigned to more than one account.."
733 # Determine the sender address
734 ErrMsg = "A problem occured while trying to formulate the reply";
735 Sender = Email.getheader("Reply-To");
737 Sender = Email.getheader("From");
739 raise Error, "Unable to determine the sender's address";
742 Date = time.strftime("%a, %d %b %Y %H:%M:%S +0000",time.gmtime(time.time()));
743 Reply = "To: %s\nReply-To: %s\nDate: %s\n" % (Sender,ReplyTo,Date);
746 if sys.argv[1] == "ping":
747 Reply = HandlePing(Reply,Attrs[0],Res[2]);
748 elif sys.argv[1] == "chpass":
749 if PlainText.strip().find("Please change my Debian password") != 0:
750 raise Error,"Please send a signed message where the first line of text is the string 'Please change my Debian password'";
751 Reply = HandleChPass(Reply,Attrs[0],Res[2]);
752 elif sys.argv[1] == "change":
753 Reply = HandleChange(Reply,Attrs[0],Res[2]);
756 raise Error, "Incorrect Invokation";
758 # Send the message through sendmail
759 ErrMsg = "A problem occured while trying to send the reply";
760 Child = os.popen("/usr/sbin/sendmail -t","w");
761 # Child = os.popen("cat","w");
763 if Child.close() != None:
764 raise Error, "Sendmail gave a non-zero return code";
768 Date = time.strftime("%a, %d %b %Y %H:%M:%S +0000",time.gmtime(time.time()));
769 ErrReplyHead = "To: %s\nReply-To: %s\nDate: %s\n" % (os.environ['SENDER'],ReplyTo,Date);
773 Subst["__ERROR__"] = ErrMsg;
774 Subst["__ADMIN__"] = ReplyTo;
776 Trace = "==> %s: %s\n" %(sys.exc_type,sys.exc_value);
777 List = traceback.extract_tb(sys.exc_traceback);
779 Trace = Trace + "Python Stack Trace:\n";
781 Trace = Trace + " %s %s:%u: %s\n" %(x[2],x[0],x[1],x[3]);
783 Subst["__TRACE__"] = Trace;
785 # Try to send the bounce
787 ErrReply = TemplateSubst(Subst,open(TemplatesDir+"error-reply","r").read());
789 Child = os.popen("/usr/sbin/sendmail -t","w");
790 Child.write(ErrReplyHead);
791 Child.write(ErrReply);
792 if Child.close() != None:
793 raise Error, "Sendmail gave a non-zero return code";
795 sys.exit(EX_TEMPFAIL);
797 if ErrType != EX_PERMFAIL: