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>
5 # This program is free software; you can redistribute it and/or modify
6 # it under the terms of the GNU General Public License as published by
7 # the Free Software Foundation; either version 2 of the License, or
8 # (at your option) any later version.
10 # This program is distributed in the hope that it will be useful,
11 # but WITHOUT ANY WARRANTY; without even the implied warranty of
12 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 # GNU General Public License for more details.
15 # You should have received a copy of the GNU General Public License
16 # along with this program; if not, write to the Free Software
17 # Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19 # Some routines and configuration that are used by the ldap progams
20 import termios, re, imp, ldap, sys, crypt, rfc822, pwd;
24 File = open("/etc/userdir-ldap/userdir-ldap.conf");
26 File = open("userdir-ldap.conf");
27 ConfModule = imp.load_source("userdir_config","/etc/userdir-ldap.conf",File);
31 BaseDn = ConfModule.basedn;
32 HostBaseDn = ConfModule.hostbasedn;
33 LDAPServer = ConfModule.ldaphost;
34 EmailAppend = ConfModule.emailappend;
35 AdminUser = ConfModule.adminuser;
36 GenerateDir = ConfModule.generatedir;
37 GenerateConf = ConfModule.generateconf;
38 DefaultGID = ConfModule.defaultgid;
39 TemplatesDir = ConfModule.templatesdir;
40 PassDir = ConfModule.passdir;
41 Ech_ErrorLog = ConfModule.ech_errorlog;
42 Ech_MainLog = ConfModule.ech_mainlog;
44 File = open(PassDir+"/key-hmac-"+pwd.getpwuid(os.getuid())[0],"r");
45 HmacKey = F.readline().strip()
48 # For backwards compatibility, we default to the old behaviour
49 MultipleSSHFiles = getattr(ConfModule, 'multiplesshfiles', False)
50 SingleSSHFile = getattr(ConfModule, 'singlesshfile', True)
53 UseSSL = ConfModule.usessl;
54 except AttributeError:
57 # Break up the keyring list
58 userdir_gpg.SetKeyrings(ConfModule.keyrings.split(":"))
60 # This is a list of common last-name prefixes
61 LastNamesPre = {"van": None, "von": None, "le": None, "de": None, "di": None};
63 # This is a list of common groups on Debian hosts
70 # ObjectClasses for different object types
71 UserObjectClasses = ("top", "inetOrgPerson", "debianAccount", "shadowAccount", "debianDeveloper")
72 RoleObjectClasses = ("top", "debianAccount", "shadowAccount", "debianRoleAccount")
73 GroupObjectClasses = ("top", "debianGroup")
75 # SSH Key splitting. The result is:
76 # (options,size,modulous,exponent,comment)
77 SSHAuthSplit = re.compile('^(.* )?(\d+) (\d+) (\d+) ?(.+)$');
78 SSH2AuthSplit = re.compile('^(.* )?ssh-(dss|rsa) ([a-zA-Z0-9=/+]+) ?(.+)$');
79 #'^([^\d](?:[^ "]+(?:".*")?)*)? ?(\d+) (\d+) (\d+) (.+)$');
81 AddressSplit = re.compile("(.*).*<([^@]*)@([^>]*)>");
83 # Safely get an attribute from a tuple representing a dn and an attribute
84 # list. It returns the first attribute if there are multi.
85 def GetAttr(DnRecord,Attribute,Default = ""):
87 return DnRecord[1][Attribute][0];
94 # Return a printable email address from the attributes.
95 def EmailAddress(DnRecord):
96 cn = GetAttr(DnRecord,"cn");
97 sn = GetAttr(DnRecord,"sn");
98 uid = GetAttr(DnRecord,"uid");
99 if cn == "" and sn == "":
100 return "<" + uid + "@" + EmailAppend + ">";
101 return cn + " " + sn + " <" + uid + "@" + EmailAppend + ">"
103 # Show a dump like ldapsearch
104 def PrettyShow(DnRecord):
106 List = DnRecord[1].keys();
109 Rec = DnRecord[1][x];
111 Result = Result + "%s: %s\n" % (x,i);
114 def connectLDAP(server = None):
118 l = ldap.open(server);
124 # Function to prompt for a password
125 def getpass(prompt = "Password: "):
127 fd = sys.stdin.fileno();
128 old = termios.tcgetattr(fd);
129 new = termios.tcgetattr(fd);
130 new[3] = new[3] & ~termios.ECHO; # lflags
132 termios.tcsetattr(fd, termios.TCSADRAIN, new);
134 passwd = raw_input(prompt);
135 except KeyboardInterrupt:
136 termios.tcsetattr(fd, termios.TCSADRAIN, old);
142 termios.tcsetattr(fd, termios.TCSADRAIN, old);
146 def passwdAccessLDAP(BaseDn, AdminUser):
148 Ask for the AdminUser's password and connect to the LDAP server.
149 Returns the connection handle.
151 print "Accessing LDAP directory as '" + AdminUser + "'";
153 Password = getpass(AdminUser + "'s password: ");
155 if len(Password) == 0:
159 UserDn = "uid=" + AdminUser + "," + BaseDn;
161 # Connect to the ldap server
163 l.simple_bind_s(UserDn,Password);
164 except ldap.INVALID_CREDENTIALS:
169 # Split up a name into multiple components. This tries to best guess how
172 Words = re.split(" ", Name.strip())
174 # Insert an empty middle name
175 if (len(Words) == 2):
180 # Put a dot after any 1 letter words, must be an initial
181 for x in range(0,len(Words)):
182 if len(Words[x]) == 1:
183 Words[x] = Words[x] + '.';
185 # If a word starts with a -, ( or [ we assume it marks the start of some
186 # Non-name information and remove the remainder of the string
187 for x in range(0,len(Words)):
188 if len(Words[x]) != 0 and (Words[x][0] == '-' or \
189 Words[x][0] == '(' or Words[x][0] == '['):
193 # Merge any of the middle initials
194 while len(Words) > 2 and len(Words[2]) == 2 and Words[2][1] == '.':
195 Words[1] = Words[1] + Words[2];
198 while len(Words) < 2:
201 # Merge any of the last name prefixes into one big last name
202 while LastNamesPre.has_key(Words[-2].lower()):
203 Words[-1] = Words[-2] + " " + Words[-1];
206 # Fix up a missing middle name after lastname globbing
207 if (len(Words) == 2):
210 # If the name is multi-word then we glob them all into the last name and
211 # do not worry about a middle name
213 Words[2] = " ".join(Words[1:])
216 return (Words[0].strip(), Words[1].strip(), Words[2].strip());
218 # Compute a random password using /dev/urandom
220 # Generate a 10 character random string
221 SaltVals = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ/.";
222 Rand = open("/dev/urandom");
224 for i in range(0,15):
225 Password = Password + SaltVals[ord(Rand.read(1)[0]) % len(SaltVals)];
228 # Compute the MD5 crypted version of the given password
229 def HashPass(Password):
230 # Hash it telling glibc to use the MD5 algorithm - if you dont have
231 # glibc then just change Salt = "$1$" to Salt = "";
232 SaltVals = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789/.";
234 Rand = open("/dev/urandom");
235 for x in range(0,10):
236 Salt = Salt + SaltVals[ord(Rand.read(1)[0]) % len(SaltVals)];
237 Pass = crypt.crypt(Password,Salt);
239 raise "Password Error", "MD5 password hashing failed, not changing the password!";
242 # Sync with the server, we count the number of async requests that are pending
243 # and make sure result has been called that number of times
244 def FlushOutstanding(l,Outstanding,Fast=0):
245 # Sync with the remote end
247 print "Waiting for",Outstanding,"requests:",
248 while (Outstanding > 0):
250 if Fast == 0 or Outstanding > 50:
251 sys.stdout.write(".",);
253 if (l.result(ldap.RES_ANY,1) != (None,None)):
254 Outstanding = Outstanding - 1;
256 if (l.result(ldap.RES_ANY,1,0) != (None,None)):
257 Outstanding = Outstanding - 1;
260 except ldap.TYPE_OR_VALUE_EXISTS:
261 Outstanding = Outstanding - 1;
262 except ldap.NO_SUCH_ATTRIBUTE:
263 Outstanding = Outstanding - 1;
264 except ldap.NO_SUCH_OBJECT:
265 Outstanding = Outstanding - 1;
270 # Convert a lat/long attribute into Decimal degrees
271 def DecDegree(Posn,Anon=0):
272 Parts = re.match('[-+]?(\d*)\\.?(\d*)',Posn).groups();
275 if (abs(Val) >= 1806060.0):
276 raise ValueError,"Too Big";
279 if abs(Val) >= 18060.0 or len(Parts[0]) > 5:
281 Secs = Val - long(Val);
282 Val = long(Val)/100.0;
283 Min = Val - long(Val);
284 Val = long(Val) + (Min*100.0 + Secs*100.0/60.0)/60.0;
287 elif abs(Val) >= 180 or len(Parts[0]) > 3:
289 Min = Val - long(Val);
290 Val = long(Val) + Min*100.0/60.0;
300 def FormatSSH2Auth(Str):
301 Match = SSH2AuthSplit.match(Str);
303 return "<unknown format>";
307 return "ssh-%s %s..%s %s"%(G[1],G[2][:8],G[2][-8:],G[3]);
308 return "%s ssh-%s %s..%s %s"%(G[0],G[1],G[2][:8],G[2][-8:],G[3]);
310 def FormatSSHAuth(Str):
311 Match = SSHAuthSplit.match(Str);
313 return FormatSSH2Auth(Str);
318 return "%s %s %s..%s %s"%(G[1],G[2],G[3][:8],G[3][-8:],G[4]);
319 return "%s %s %s %s..%s %s"%(G[0],G[1],G[2],G[3][:8],G[3][-8:],G[4]);
321 def FormatPGPKey(Str):
327 while (I < len(Str)):
329 Res = "%s %s%s "%(Res,Str[I],Str[I+1]);
331 Res = "%s%s%s "%(Res,Str[I],Str[I+1]);
333 elif (len(Str) == 40):
336 while (I < len(Str)):
338 Res = "%s %s%s%s%s "%(Res,Str[I],Str[I+1],Str[I+2],Str[I+3]);
340 Res = "%s%s%s%s%s "%(Res,Str[I],Str[I+1],Str[I+2],Str[I+3]);
346 # Take an email address and split it into 3 parts, (Name,UID,Domain)
347 def SplitEmail(Addr):
348 # Is not an email address at all
349 if Addr.find('@') == -1:
352 Res1 = rfc822.AddrlistClass(Addr).getaddress();
357 return (Res1[0],"","");
359 # If there is no @ then the address was not parsed well. Try the alternate
360 # Parsing scheme. This is particularly important when scanning PGP keys.
361 Res2 = Res1[1].split("@");
363 Match = AddressSplit.match(Addr);
366 return Match.groups();
368 return (Res1[0],Res2[0],Res2[1]);
370 # Convert the PGP name string to a uid value. The return is a tuple of
371 # (uid,[message strings]). UnknownMpa is a hash from email to uid that
372 # overrides normal searching.
373 def GetUID(l,Name,UnknownMap = {}):
374 # Crack up the email address into a best guess first/middle/last name
375 (cn,mn,sn) = NameSplit(re.sub('["]','',Name[0]))
377 # Brackets anger the ldap searcher
378 cn = re.sub('[(")]','?',cn);
379 sn = re.sub('[(")]','?',sn);
381 # First check the unknown map for the email address
382 if UnknownMap.has_key(Name[1] + '@' + Name[2]):
383 Stat = "unknown map hit for "+str(Name);
384 return (UnknownMap[Name[1] + '@' + Name[2]],[Stat]);
386 # Then the cruft component (ie there was no email address to match)
387 if UnknownMap.has_key(Name[2]):
388 Stat = "unknown map hit for"+str(Name);
389 return (UnknownMap[Name[2]],[Stat]);
391 # Then the name component (another ie there was no email address to match)
392 if UnknownMap.has_key(Name[0]):
393 Stat = "unknown map hit for"+str(Name);
394 return (UnknownMap[Name[0]],[Stat]);
396 # Search for a possible first/last name hit
398 Attrs = l.search_s(BaseDn,ldap.SCOPE_ONELEVEL,"(&(cn=%s)(sn=%s))"%(cn,sn),["uid"]);
399 except ldap.FILTER_ERROR:
400 Stat = "Filter failure: (&(cn=%s)(sn=%s))"%(cn,sn);
401 return (None,[Stat]);
403 # Try matching on the email address
404 if (len(Attrs) != 1):
406 Attrs = l.search_s(BaseDn,ldap.SCOPE_ONELEVEL,"emailforward=%s"%(Name[2]),["uid"]);
407 except ldap.FILTER_ERROR:
410 # Hmm, more than one/no return
411 if (len(Attrs) != 1):
412 # Key claims a local address
413 if Name[2] == EmailAppend:
415 # Pull out the record for the claimed user
416 Attrs = l.search_s(BaseDn,ldap.SCOPE_ONELEVEL,"(uid=%s)"%(Name[1]),["uid","sn","cn"]);
418 # We require the UID surname to be someplace in the key name, this
419 # deals with special purpose keys like 'James Troup (Alternate Debian key)'
420 # Some people put their names backwards on their key too.. check that as well
421 if len(Attrs) == 1 and \
422 ( sn.lower().find(Attrs[0][1]["sn"][0].lower()) != -1 or \
423 cn.lower().find(Attrs[0][1]["sn"][0].lower()) != -1 ):
424 Stat = EmailAppend+" hit for "+str(Name);
425 return (Name[1],[Stat]);
427 # Attempt to give some best guess suggestions for use in editing the
429 Attrs = l.search_s(BaseDn,ldap.SCOPE_ONELEVEL,"(sn~=%s)"%(sn),["uid","sn","cn"]);
433 Stat = ["None for %s"%(str(Name))];
435 Stat.append("But might be: %s %s <%s@debian.org>"%(x[1]["cn"][0],x[1]["sn"][0],x[1]["uid"][0]));
438 return (Attrs[0][1]["uid"][0],None);
442 def Group2GID(l, name):
444 Returns the numerical id of a common group
447 for g in DebianGroups.keys():
449 return DebianGroups[g]
451 filter = "(gid=%s)" % name
452 res = l.search_s(BaseDn,ldap.SCOPE_ONELEVEL,filter,["gidNumber"]);
454 return int(GetAttr(res[0], "gidNumber"))
459 return hmac.new(HmacKey, str, sha1_module).hexdigest()
461 def make_sudopasswd_hmac(purpose, uuid, hosts, cryptedpass):
462 return make_hmac(':'.join([purpose, uuid, hosts, cryptedpass]))