1 # Copyright (c) 1999-2000 Jason Gunthorpe <jgg@debian.org>
2 # Copyright (c) 2001-2003 Ryan Murray <rmurray@debian.org>
3 # Copyright (c) 2004-2005 Joey Schulze <joey@infodrom.org>
4 # Copyright (c) 2008 Peter Palfrader <peter@palfrader.org>
5 # Copyright (c) 2008 Thomas Viehmann <tv@beamnet.de>
7 # This program is free software; you can redistribute it and/or modify
8 # it under the terms of the GNU General Public License as published by
9 # the Free Software Foundation; either version 2 of the License, or
10 # (at your option) any later version.
12 # This program is distributed in the hope that it will be useful,
13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 # GNU General Public License for more details.
17 # You should have received a copy of the GNU General Public License
18 # along with this program; if not, write to the Free Software
19 # Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
21 # Some routines and configuration that are used by the ldap progams
22 import termios, re, imp, ldap, sys, crypt, rfc822, pwd, os, getpass
25 import sha as sha1_module
28 File = open("/etc/userdir-ldap/userdir-ldap.conf");
30 File = open("userdir-ldap.conf");
31 ConfModule = imp.load_source("userdir_config","/etc/userdir-ldap.conf",File);
35 BaseDn = ConfModule.basedn;
36 HostBaseDn = ConfModule.hostbasedn;
37 LDAPServer = ConfModule.ldaphost;
38 EmailAppend = ConfModule.emailappend;
39 AdminUser = ConfModule.adminuser;
40 GenerateDir = ConfModule.generatedir;
41 GenerateConf = ConfModule.generateconf;
42 DefaultGID = ConfModule.defaultgid;
43 TemplatesDir = ConfModule.templatesdir;
44 PassDir = ConfModule.passdir;
45 Ech_ErrorLog = ConfModule.ech_errorlog;
46 Ech_MainLog = ConfModule.ech_mainlog;
47 HostDomain = getattr(ConfModule, "hostdomain", EmailAppend)
50 UseSSL = ConfModule.usessl;
51 except AttributeError:
54 # Break up the keyring list
55 userdir_gpg.SetKeyrings(ConfModule.keyrings.split(":"))
57 # This is a list of common last-name prefixes
58 LastNamesPre = {"van": None, "von": None, "le": None, "de": None, "di": None};
60 # This is a list of common groups on Debian hosts
67 # ObjectClasses for different object types
68 UserObjectClasses = ("top", "inetOrgPerson", "debianAccount", "shadowAccount", "debianDeveloper")
69 RoleObjectClasses = ("top", "debianAccount", "shadowAccount", "debianRoleAccount")
70 GroupObjectClasses = ("top", "debianGroup")
72 # SSH Key splitting. The result is:
73 # (options,size,modulous,exponent,comment)
74 SSHAuthSplit = re.compile('^(.* )?(\d+) (\d+) (\d+) ?(.+)$');
75 SSH2AuthSplit = re.compile('^(.* )?ssh-(dss|rsa) ([a-zA-Z0-9=/+]+) ?(.+)$');
76 #'^([^\d](?:[^ "]+(?:".*")?)*)? ?(\d+) (\d+) (\d+) (.+)$');
78 AddressSplit = re.compile("(.*).*<([^@]*)@([^>]*)>");
80 # Safely get an attribute from a tuple representing a dn and an attribute
81 # list. It returns the first attribute if there are multi.
82 def GetAttr(DnRecord,Attribute,Default = ""):
84 return DnRecord[1][Attribute][0];
91 # Return a printable email address from the attributes.
92 def EmailAddress(DnRecord):
93 cn = GetAttr(DnRecord,"cn");
94 sn = GetAttr(DnRecord,"sn");
95 uid = GetAttr(DnRecord,"uid");
96 if cn == "" and sn == "":
97 return "<" + uid + "@" + EmailAppend + ">";
98 return cn + " " + sn + " <" + uid + "@" + EmailAppend + ">"
100 # Show a dump like ldapsearch
101 def PrettyShow(DnRecord):
103 List = DnRecord[1].keys();
106 Rec = DnRecord[1][x];
108 Result = Result + "%s: %s\n" % (x,i);
111 def connectLDAP(server = None):
115 l = ldap.open(server);
121 def passwdAccessLDAP(BaseDn, AdminUser):
123 Ask for the AdminUser's password and connect to the LDAP server.
124 Returns the connection handle.
126 print "Accessing LDAP directory as '" + AdminUser + "'";
128 Password = getpass.getpass(AdminUser + "'s password: ")
130 if len(Password) == 0:
134 UserDn = "uid=" + AdminUser + "," + BaseDn;
136 # Connect to the ldap server
138 l.simple_bind_s(UserDn,Password);
139 except ldap.INVALID_CREDENTIALS:
144 # Split up a name into multiple components. This tries to best guess how
147 Words = re.split(" ", Name.strip())
149 # Insert an empty middle name
150 if (len(Words) == 2):
155 # Put a dot after any 1 letter words, must be an initial
156 for x in range(0,len(Words)):
157 if len(Words[x]) == 1:
158 Words[x] = Words[x] + '.';
160 # If a word starts with a -, ( or [ we assume it marks the start of some
161 # Non-name information and remove the remainder of the string
162 for x in range(0,len(Words)):
163 if len(Words[x]) != 0 and (Words[x][0] == '-' or \
164 Words[x][0] == '(' or Words[x][0] == '['):
168 # Merge any of the middle initials
169 while len(Words) > 2 and len(Words[2]) == 2 and Words[2][1] == '.':
170 Words[1] = Words[1] + Words[2];
173 while len(Words) < 2:
176 # Merge any of the last name prefixes into one big last name
177 while LastNamesPre.has_key(Words[-2].lower()):
178 Words[-1] = Words[-2] + " " + Words[-1];
181 # Fix up a missing middle name after lastname globbing
182 if (len(Words) == 2):
185 # If the name is multi-word then we glob them all into the last name and
186 # do not worry about a middle name
188 Words[2] = " ".join(Words[1:])
191 return (Words[0].strip(), Words[1].strip(), Words[2].strip());
193 # Compute a random password using /dev/urandom
195 # Generate a 10 character random string
196 SaltVals = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ/.";
197 Rand = open("/dev/urandom");
199 for i in range(0,15):
200 Password = Password + SaltVals[ord(Rand.read(1)[0]) % len(SaltVals)];
203 # Compute the MD5 crypted version of the given password
204 def HashPass(Password):
205 # Hash it telling glibc to use the MD5 algorithm - if you dont have
206 # glibc then just change Salt = "$1$" to Salt = "";
207 SaltVals = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789/.";
209 Rand = open("/dev/urandom");
210 for x in range(0,10):
211 Salt = Salt + SaltVals[ord(Rand.read(1)[0]) % len(SaltVals)];
212 Pass = crypt.crypt(Password,Salt);
214 raise "Password Error", "MD5 password hashing failed, not changing the password!";
217 # Sync with the server, we count the number of async requests that are pending
218 # and make sure result has been called that number of times
219 def FlushOutstanding(l,Outstanding,Fast=0):
220 # Sync with the remote end
222 print "Waiting for",Outstanding,"requests:",
223 while (Outstanding > 0):
225 if Fast == 0 or Outstanding > 50:
226 sys.stdout.write(".",);
228 if (l.result(ldap.RES_ANY,1) != (None,None)):
229 Outstanding = Outstanding - 1;
231 if (l.result(ldap.RES_ANY,1,0) != (None,None)):
232 Outstanding = Outstanding - 1;
235 except ldap.TYPE_OR_VALUE_EXISTS:
236 Outstanding = Outstanding - 1;
237 except ldap.NO_SUCH_ATTRIBUTE:
238 Outstanding = Outstanding - 1;
239 except ldap.NO_SUCH_OBJECT:
240 Outstanding = Outstanding - 1;
245 # Convert a lat/long attribute into Decimal degrees
246 def DecDegree(Posn,Anon=0):
247 Parts = re.match('[-+]?(\d*)\\.?(\d*)',Posn).groups();
250 if (abs(Val) >= 1806060.0):
251 raise ValueError,"Too Big";
254 if abs(Val) >= 18060.0 or len(Parts[0]) > 5:
256 Secs = Val - long(Val);
257 Val = long(Val)/100.0;
258 Min = Val - long(Val);
259 Val = long(Val) + (Min*100.0 + Secs*100.0/60.0)/60.0;
262 elif abs(Val) >= 180 or len(Parts[0]) > 3:
264 Min = Val - long(Val);
265 Val = long(Val) + Min*100.0/60.0;
275 def FormatSSH2Auth(Str):
276 Match = SSH2AuthSplit.match(Str);
278 return "<unknown format>";
282 return "ssh-%s %s..%s %s"%(G[1],G[2][:8],G[2][-8:],G[3]);
283 return "%s ssh-%s %s..%s %s"%(G[0],G[1],G[2][:8],G[2][-8:],G[3]);
285 def FormatSSHAuth(Str):
286 Match = SSHAuthSplit.match(Str);
288 return FormatSSH2Auth(Str);
293 return "%s %s %s..%s %s"%(G[1],G[2],G[3][:8],G[3][-8:],G[4]);
294 return "%s %s %s %s..%s %s"%(G[0],G[1],G[2],G[3][:8],G[3][-8:],G[4]);
296 def FormatPGPKey(Str):
302 while (I < len(Str)):
304 Res = "%s %s%s "%(Res,Str[I],Str[I+1]);
306 Res = "%s%s%s "%(Res,Str[I],Str[I+1]);
308 elif (len(Str) == 40):
311 while (I < len(Str)):
313 Res = "%s %s%s%s%s "%(Res,Str[I],Str[I+1],Str[I+2],Str[I+3]);
315 Res = "%s%s%s%s%s "%(Res,Str[I],Str[I+1],Str[I+2],Str[I+3]);
321 # Take an email address and split it into 3 parts, (Name,UID,Domain)
322 def SplitEmail(Addr):
323 # Is not an email address at all
324 if Addr.find('@') == -1:
327 Res1 = rfc822.AddrlistClass(Addr).getaddress();
332 return (Res1[0],"","");
334 # If there is no @ then the address was not parsed well. Try the alternate
335 # Parsing scheme. This is particularly important when scanning PGP keys.
336 Res2 = Res1[1].split("@");
338 Match = AddressSplit.match(Addr);
341 return Match.groups();
343 return (Res1[0],Res2[0],Res2[1]);
345 # Convert the PGP name string to a uid value. The return is a tuple of
346 # (uid,[message strings]). UnknownMpa is a hash from email to uid that
347 # overrides normal searching.
348 def GetUID(l,Name,UnknownMap = {}):
349 # Crack up the email address into a best guess first/middle/last name
350 (cn,mn,sn) = NameSplit(re.sub('["]','',Name[0]))
352 # Brackets anger the ldap searcher
353 cn = re.sub('[(")]','?',cn);
354 sn = re.sub('[(")]','?',sn);
356 # First check the unknown map for the email address
357 if UnknownMap.has_key(Name[1] + '@' + Name[2]):
358 Stat = "unknown map hit for "+str(Name);
359 return (UnknownMap[Name[1] + '@' + Name[2]],[Stat]);
361 # Then the cruft component (ie there was no email address to match)
362 if UnknownMap.has_key(Name[2]):
363 Stat = "unknown map hit for"+str(Name);
364 return (UnknownMap[Name[2]],[Stat]);
366 # Then the name component (another ie there was no email address to match)
367 if UnknownMap.has_key(Name[0]):
368 Stat = "unknown map hit for"+str(Name);
369 return (UnknownMap[Name[0]],[Stat]);
371 # Search for a possible first/last name hit
373 Attrs = l.search_s(BaseDn,ldap.SCOPE_ONELEVEL,"(&(cn=%s)(sn=%s))"%(cn,sn),["uid"]);
374 except ldap.FILTER_ERROR:
375 Stat = "Filter failure: (&(cn=%s)(sn=%s))"%(cn,sn);
376 return (None,[Stat]);
378 # Try matching on the email address
379 if (len(Attrs) != 1):
381 Attrs = l.search_s(BaseDn,ldap.SCOPE_ONELEVEL,"emailforward=%s"%(Name[2]),["uid"]);
382 except ldap.FILTER_ERROR:
385 # Hmm, more than one/no return
386 if (len(Attrs) != 1):
387 # Key claims a local address
388 if Name[2] == EmailAppend:
390 # Pull out the record for the claimed user
391 Attrs = l.search_s(BaseDn,ldap.SCOPE_ONELEVEL,"(uid=%s)"%(Name[1]),["uid","sn","cn"]);
393 # We require the UID surname to be someplace in the key name, this
394 # deals with special purpose keys like 'James Troup (Alternate Debian key)'
395 # Some people put their names backwards on their key too.. check that as well
396 if len(Attrs) == 1 and \
397 ( sn.lower().find(Attrs[0][1]["sn"][0].lower()) != -1 or \
398 cn.lower().find(Attrs[0][1]["sn"][0].lower()) != -1 ):
399 Stat = EmailAppend+" hit for "+str(Name);
400 return (Name[1],[Stat]);
402 # Attempt to give some best guess suggestions for use in editing the
404 Attrs = l.search_s(BaseDn,ldap.SCOPE_ONELEVEL,"(sn~=%s)"%(sn),["uid","sn","cn"]);
408 Stat = ["None for %s"%(str(Name))];
410 Stat.append("But might be: %s %s <%s@debian.org>"%(x[1]["cn"][0],x[1]["sn"][0],x[1]["uid"][0]));
413 return (Attrs[0][1]["uid"][0],None);
417 def Group2GID(l, name):
419 Returns the numerical id of a common group
422 for g in DebianGroups.keys():
424 return DebianGroups[g]
426 filter = "(gid=%s)" % name
427 res = l.search_s(BaseDn,ldap.SCOPE_ONELEVEL,filter,["gidNumber"]);
429 return int(GetAttr(res[0], "gidNumber"))
434 File = open(PassDir+"/key-hmac-"+pwd.getpwuid(os.getuid())[0],"r");
435 HmacKey = File.readline().strip()
437 return hmac.new(HmacKey, str, sha1_module).hexdigest()
439 def make_passwd_hmac(status, purpose, uid, uuid, hosts, cryptedpass):
440 return make_hmac(':'.join([status, purpose, uid, uuid, hosts, cryptedpass]))