+#!/usr/bin/env python
+# -*- mode: python -*-
+import userdir_gpg, userdir_ldap, sys, traceback, time, ldap, posix;
+import string, pwd
+from userdir_gpg import *;
+from userdir_ldap import *;
+
+EX_TEMPFAIL = 75;
+EX_PERMFAIL = 65; # EX_DATAERR
+
+# Try to extract a key fingerprint from a PGP siged message
+def TryGPG(Email):
+ # Try to get a pgp text
+ Msg = GetClearSig(Email);
+ if string.find(Msg[0],"-----BEGIN PGP SIGNED MESSAGE-----") == -1:
+ return None;
+
+ Res = GPGCheckSig(Msg[0]);
+
+ # Failed to find a matching sig
+ if Res[0] != None:
+ return None;
+
+ # Search for the matching key fingerprint
+ Attrs = l.search_s(BaseDn,ldap.SCOPE_ONELEVEL,"keyfingerprint=" + Res[2][1]);
+ if len(Attrs) == 0:
+ return None;
+ if len(Attrs) != 1:
+ raise Error, "Oddly your key fingerprint is assigned to more than one account.."
+
+ return (Attrs[0][1]["uid"][0],"PGP",FormatPGPKey(Res[2][1]));
+
+# Convert the PGP name string to a uid value
+def GetUID(l,Name,UnknownMap = {}):
+ # Crack up the email address into a best guess first/middle/last name
+ (cn,mn,sn) = NameSplit(re.sub('["]','',Name[0]))
+
+ # Brackets anger the ldap searcher
+ cn = re.sub('[(")]','?',cn);
+ sn = re.sub('[(")]','?',sn);
+
+ # First check the unknown map for the email address
+ if UnknownMap.has_key(Name[1] + '@' + Name[2]):
+ Stat = "unknown map hit for "+str(Name);
+ return (UnknownMap[Name[1] + '@' + Name[2]],[Stat]);
+
+ # Then the cruft component (ie there was no email address to match)
+ if UnknownMap.has_key(Name[2]):
+ Stat = "unknown map hit for"+str(Name);
+ return (UnknownMap[Name[2]],[Stat]);
+
+ # Search for a possible first/last name hit
+ try:
+ Attrs = l.search_s(BaseDn,ldap.SCOPE_ONELEVEL,"(&(cn=%s)(sn=%s))"%(cn,sn),["uid"]);
+ except ldap.FILTER_ERROR:
+ Stat = "Filter failure: (&(cn=%s)(sn=%s))"%(cn,sn);
+ return (None,[Stat]);
+
+ # Try matching on the email address
+ if (len(Attrs) != 1):
+ try:
+ Attrs = l.search_s(BaseDn,ldap.SCOPE_ONELEVEL,"emailforward=%s"%(Name[2]),["uid"]);
+ except ldap.FILTER_ERROR:
+ pass;
+
+ # Hmm, more than one/no return
+ if (len(Attrs) != 1):
+ # Key claims a local address
+ if Name[2] == EmailAppend:
+
+ # Pull out the record for the claimed user
+ Attrs = l.search_s(BaseDn,ldap.SCOPE_ONELEVEL,"(uid=%s)"%(Name[1]),["uid","sn","cn"]);
+
+ # We require the UID surname to be someplace in the key name, this
+ # deals with special purpose keys like 'James Troup (Alternate Debian key)'
+ # Some people put their names backwards on their key too.. check that as well
+ if len(Attrs) == 1 and \
+ (string.find(string.lower(sn),string.lower(Attrs[0][1]["sn"][0])) != -1 or \
+ string.find(string.lower(cn),string.lower(Attrs[0][1]["sn"][0])) != -1):
+ Stat = EmailAppend+" hit for "+str(Name);
+ return (Name[1],[Stat]);
+
+ # Attempt to give some best guess suggestions for use in editing the
+ # override file.
+ Attrs = l.search_s(BaseDn,ldap.SCOPE_ONELEVEL,"(sn~=%s)"%(sn),["uid","sn","cn"]);
+
+ Stat = [];
+ if len(Attrs) != 0:
+ Stat = ["None for %s"%(str(Name))];
+ for x in Attrs:
+ Stat.append("But might be: %s %s <%s@debian.org>"%(x[1]["cn"][0],x[1]["sn"][0],x[1]["uid"][0]));
+ return (None,Stat);
+ else:
+ return (Attrs[0][1]["uid"][0],None);
+
+ return (None,None);
+
+# Try to guess the name from the email address
+def TryMatcher(Email):
+ Sender = Email.getheader("From");
+ if Sender == None:
+ return None;
+
+ # Split up the address and invoke the matcher routine
+ UID = GetUID(l,SplitEmail(Sender));
+
+ if UID[0] == None:
+ if UID[1] == None or len(UID[1]) == 0:
+ return None;
+
+ # Print out an error message
+ S = "%s: %s -> Address matching failed '%s'\n" %(Now,MsgID,Sender);
+ for x in UID[1]:
+ S = S + " " + x + "\n";
+ ErrLog.write(S);
+ return None;
+
+ return (UID[0],"FROM",Sender);
+
+# Open the log files
+MainLog = open(Ech_MainLog,"a+",0);
+ErrLog = open(Ech_ErrorLog,"a+",0);
+
+# Start of main program
+ErrMsg = "Indeterminate Error";
+ErrType = EX_TEMPFAIL;
+Now = time.strftime("%a, %d %b %Y %H:%M:%S",time.gmtime(time.time()));
+MsgID = None;
+try:
+ # Get the email
+ ErrType = EX_PERMFAIL;
+ ErrMsg = "Failed to understand the email or find a signature:";
+ Email = mimetools.Message(sys.stdin,0);
+ MsgID = Email.getheader("Message-ID");
+
+ # Connect to the ldap server
+ ErrType = EX_TEMPFAIL;
+ ErrMsg = "An error occured while performing the LDAP lookup";
+ global l;
+ l = ldap.open(LDAPServer);
+ F = open(PassDir+"/pass-"+pwd.getpwuid(posix.getuid())[0],"r");
+ AccessPass = string.split(string.strip(F.readline())," ");
+ l.simple_bind_s("uid="+AccessPass[0]+","+BaseDn,AccessPass[1]);
+ F.close();
+
+ # Try to decode
+ ErrType = EX_TEMPFAIL;
+ ErrMsg = "An error occured while trying GPG decoding";
+ User = TryGPG(Email);
+ if User == None:
+ ErrMsg = "An error occured while trying Matcher decoding";
+ User = TryMatcher(Email);
+
+ # Get any mailing list information
+ List = Email.getheader("X-Mailing-List");
+ if List == None:
+ List = "-";
+
+ # Tada, write a log message
+ if User != None:
+ Msg = "[%s] \"%s\" \"%s\" \"%s\""%(Now,User[2],List,MsgID);
+ MainLog.write("%s %s %s\n"%(User[0],User[1],Msg));
+ Dn = "uid=" + User[0] + "," + BaseDn;
+ Rec = [(ldap.MOD_REPLACE,"activity-%s"%(User[1]),Msg)];
+ l.modify_s(Dn,Rec);
+ else:
+ User = ("-","UKN",Email.getheader("From"));
+ Msg = "[%s] \"%s\" \"%s\" \"%s\""%(Now,User[2],List,MsgID);
+ MainLog.write("%s %s %s\n"%(User[0],User[1],Msg));
+
+except:
+ # Log an exception..
+ S = "%s: %s -> %s\n" %(Now,MsgID,ErrMsg);
+ S = S + "==> %s: %s\n" %(sys.exc_type,sys.exc_value);
+ List = traceback.extract_tb(sys.exc_traceback);
+ if len(List) > 1:
+ for x in List:
+ S = S + " %s %s:%u: %s\n" %(x[2],x[0],x[1],x[3]);
+ ErrLog.write(S);
+ sys.exit(ErrType);
+
+sys.exit(0);
projects / mirror / userdir-ldap.git / commitdiff