X-Git-Url: https://git.adam-barratt.org.uk/?a=blobdiff_plain;f=ud-mailgate;h=fe9a6916afe55432c24cafe0e4233ec104a80118;hb=41fc2a5c34f584714b2b768334d6ccc5839694f4;hp=4da438266d92e8eb1f84595317c04115836c21ae;hpb=611e526f755299a0ad88c163f5abf1e7106a1f70;p=mirror%2Fuserdir-ldap.git diff --git a/ud-mailgate b/ud-mailgate index 4da4382..fe9a691 100755 --- a/ud-mailgate +++ b/ud-mailgate @@ -7,6 +7,7 @@ import userdir_gpg, userdir_ldap, sys, traceback, time, ldap, os, commands import pwd, tempfile +import hmac, haslib from userdir_gpg import * from userdir_ldap import * @@ -18,6 +19,8 @@ ChangeFrom = ConfModule.changefrom; ReplayCacheFile = ConfModule.replaycachefile; SSHFingerprintFile = ConfModule.fingerprintfile +UUID_FORMAT = '[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}' + EX_TEMPFAIL = 75; EX_PERMFAIL = 65; # EX_DATAERR Error = 'Message Error'; @@ -28,10 +31,19 @@ mailRHSBL = {} mailWhitelist = {} SeenList = {} DNS = {} +SudoPasswd = {} SSHFingerprint = re.compile('^(\d+) ([0-9a-f\:]{47}) (.+)$') SSHRSA1Match = re.compile('^^(.* )?\d+ \d+ \d+') +GenderTable = {"male": 1, + "1": 1, + "female": 2, + "2": 2, + "unspecified": 9, + "9": 9, +}; + ArbChanges = {"c": "..", "l": ".*", "facsimileTelephoneNumber": ".*", @@ -50,6 +62,7 @@ ArbChanges = {"c": "..", "mailGreylisting": "^(TRUE|FALSE)$", "mailCallout": "^(TRUE|FALSE)$", "VoIP": ".*", + "gender": "^(1|2|9|male|female|unspecified)$", }; DelItems = {"c": None, @@ -80,6 +93,15 @@ DelItems = {"c": None, "VoIP": None, }; +def make_hmac(str): + F = open(PassDir+"/key-hmac","r"); + key = F.readline() + F.close(); + + return hmac.new(key, str, hashlib.sha1).hexdigest + + + # Decode a GPS location from some common forms def LocDecode(Str,Dir): # Check for Decimal degrees, DGM, or DGMS @@ -158,6 +180,12 @@ def DoArbChange(Str,Attrs): if re.match(ArbChanges[attrName],G[1]) == None: raise Error, "Item does not match the required format"+ArbChanges[attrName]; + value = G[1]; + if attrName == 'gender': + if G[1] not in GenderTable: + raise Error, "Gender not found in table" + value = GenderTable[G[1]] + # if attrName == 'birthDate': # (re.match("^([0-9]{4})([01][0-9])([0-3][0-9])$",G[1]) { # $bd_yr = $1; $bd_mo = $2; $bd_day = $3; @@ -181,8 +209,8 @@ def DoArbChange(Str,Attrs): # } elsif (not defined($query->param('birthdate')) or $query->param('birthdate') =~ /^\s*$/) { # $bd_ok = 1; # } - Attrs.append((ldap.MOD_REPLACE,attrName,G[1])); - return "Changed entry %s to %s"%(attrName,G[1]); + Attrs.append((ldap.MOD_REPLACE,attrName,value)); + return "Changed entry %s to %s"%(attrName,value); # Handle changing a set of arbitary fields # : value @@ -239,6 +267,8 @@ def LoadBadSSH(): # [options] 1024 35 13188913666680[..] [comment] def DoSSH(Str, Attrs, badkeys, uid): Match = SSH2AuthSplit.match(Str); + if Match == None: + return None; g = Match.groups() typekey = g[1] if Match == None: @@ -429,6 +459,69 @@ def DoRBL(Str,Attrs): SeenList[Key] = 1; return "%s replaced with %s" % (Key,Host) +# Handle a ConfirmSudoPassword request +def DoConfirmSudopassword(Str): + Match = re.compile('^confirm sudopassword ('+UUID_FORMAT+') ([a-z0-9,*]+) ([0-9a-f]{40})$').match(Str.lower()) + if Match == None: + return None + + uuid = Match.group(1) + hosts = Match.group(2) + hmac = Match.group(3) + + global SudoPasswd + SudoPasswd[uuid] = (hosts, hmac) + return "got confirm for sudo password %s on host(s) %s, auth code %s" % (uuid,hosts, hmac) + +def FinishConfirmSudopassword(l, dn, Attrs): + global SudoPasswd + result = "\n" + + res = l.search_s(BaseDn,ldap.SCOPE_ONELEVEL,"uid="+uid, ['sudoPassword']); + if len(res) != 1: + raise Error, "Not exactly one hit when searching for user" + Attrs = res[0][1] + if Attrs.has_key('sudoPassword'): + inldap = Attrs['sudoPassword'] + else: + inldap = [] + + first_entry = 0 + for entry in inldap: + Match = re.compile('^('+UUID_FORMAT+') (confirmed|unconfirmed) ([a-z0-9,*]+) ([^ ]+)$'),match(entry.lower()) + if Match == None: + raise Error, "Could not parse existing sudopasswd entry" + uuid = Match.group(1) + status = Match.group(2) + hosts = Match.group(3) + cryptedpass = Match.group(4) + + if SudoPasswd.has_key(uuid): + confirmedHosts = SudoPasswd[uuid][0] + confirmedHmac = SudoPasswd[uuid][1] + if status == "confirmed": + result = result + "Entry %s for sudo password on hosts %s already confirmed.\n"%(uuid, hosts) + elif confirmedHosts != hosts: + result = result + "Entry %s hostlist mismatch (%s vs. %s).\n"%(uuid, hosts, confirmedHosts) + elif make_hmac(':'.join([uuid, hosts, cryptedpass])) == confirmedHmac: + result = result + "Entry %s for sudo password on hosts %s now confirmed.\n"%(uuid, hosts) + status = 'confirmed' + else: + result = result + "Entry %s for sudo password on hosts %s HMAC verify failed.\n"%(uuid, hosts) + del SudoPasswd[uuid] + + newentry = " ".join([uuid, status, hosts, cryptedpass]) + if first_entry: + Attrs.append((ldap.MOD_ADD,"sudoPassword",newentry)) + else: + Attrs.append((ldap.MOD_REPLACE,"sudoPassword",newentry)) + first_entry = 1 + + for entry in SudoPasswd: + result = result + "Entry %s that you confirm is not listed in ldap."%(entry) + + return result + # Handle an [almost] arbitary change def HandleChange(Reply,DnRecord,Key): global PlainText; @@ -437,6 +530,7 @@ def HandleChange(Reply,DnRecord,Key): Result = ""; Attrs = []; Show = 0; + CommitChanges = 1 for Line in Lines: Line = Line.strip() if Line == "": @@ -452,32 +546,40 @@ def HandleChange(Reply,DnRecord,Key): badkeys = LoadBadSSH() Res = DoPosition(Line,Attrs) or DoDNS(Line,Attrs,DnRecord) or \ DoArbChange(Line,Attrs) or DoSSH(Line,Attrs,badkeys,GetAttr(DnRecord,"uid")) or \ - DoDel(Line,Attrs) or DoRBL(Line,Attrs) + DoDel(Line,Attrs) or DoRBL(Line,Attrs) or DoConfirmSudopassword(Line) except: Res = None; Result = Result + "==> %s: %s\n" %(sys.exc_type,sys.exc_value); - + # Fail, if someone tries to send someone elses signed email to the # daemon then we want to abort ASAP. if Res == None: - Result = Result + "Command is not understood. Halted\n"; + CommitChanges = 0 + Result = Result + "Command is not understood. Halted - no changes committed\n"; break; Result = Result + Res + "\n"; # Connect to the ldap server - l = ldap.open(LDAPServer); + l = connectLDAP() F = open(PassDir+"/pass-"+pwd.getpwuid(os.getuid())[0],"r"); AccessPass = F.readline().strip().split(" ") F.close(); - # Modify the record l.simple_bind_s("uid="+AccessPass[0]+","+BaseDn,AccessPass[1]); oldAttrs = l.search_s(BaseDn,ldap.SCOPE_ONELEVEL,"uid="+GetAttr(DnRecord,"uid")); if ((GetAttr(oldAttrs[0],"userPassword").find("*LK*") != -1) or GetAttr(oldAttrs[0],"userPassword").startswith("!")): raise Error, "This account is locked"; + try: + Res = FinishConfirmSudopassword(l, GetAttr(DnRecord,"uid"), Attrs) + Result = Result + Res + "\n"; + except: + CommitChanges = 0 + Result = Result + "ConfirmSudopassword raised an error - no changes committed\n"; + # Modify the record Dn = "uid=" + GetAttr(DnRecord,"uid") + "," + BaseDn; - l.modify_s(Dn,Attrs); + if CommitChanges == 1: + l.modify_s(Dn,Attrs); Attribs = ""; if Show == 1: @@ -536,7 +638,7 @@ def HandleChPass(Reply,DnRecord,Key): Reply = Reply + TemplateSubst(Subst,open(TemplatesDir+"passwd-changed","r").read()); # Connect to the ldap server - l = ldap.open(LDAPServer); + l = connectLDAP() F = open(PassDir+"/pass-"+pwd.getpwuid(os.getuid())[0],"r"); AccessPass = F.readline().strip().split(" ") F.close(); @@ -549,7 +651,8 @@ def HandleChPass(Reply,DnRecord,Key): raise Error, "This account is locked"; # Modify the password - Rec = [(ldap.MOD_REPLACE,"userPassword","{crypt}"+Pass)]; + Rec = [(ldap.MOD_REPLACE,"userPassword","{crypt}"+Pass), + (ldap.MOD_REPLACE,"shadowLastChange",str(int(time.time()/24/60/60)))]; Dn = "uid=" + GetAttr(DnRecord,"uid") + "," + BaseDn; l.modify_s(Dn,Rec); @@ -613,7 +716,7 @@ try: ErrType = EX_TEMPFAIL; ErrMsg = "An error occured while performing the LDAP lookup"; global l; - l = ldap.open(LDAPServer); + l = connectLDAP() l.simple_bind_s("",""); # Search for the matching key fingerprint