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, os;
23 import sha as sha1_module
26 File = open("/etc/userdir-ldap/userdir-ldap.conf");
28 File = open("userdir-ldap.conf");
29 ConfModule = imp.load_source("userdir_config","/etc/userdir-ldap.conf",File);
33 BaseDn = ConfModule.basedn;
34 HostBaseDn = ConfModule.hostbasedn;
35 LDAPServer = ConfModule.ldaphost;
36 EmailAppend = ConfModule.emailappend;
37 AdminUser = ConfModule.adminuser;
38 GenerateDir = ConfModule.generatedir;
39 GenerateConf = ConfModule.generateconf;
40 DefaultGID = ConfModule.defaultgid;
41 TemplatesDir = ConfModule.templatesdir;
42 PassDir = ConfModule.passdir;
43 Ech_ErrorLog = ConfModule.ech_errorlog;
44 Ech_MainLog = ConfModule.ech_mainlog;
46 # For backwards compatibility, we default to the old behaviour
47 MultipleSSHFiles = getattr(ConfModule, 'multiplesshfiles', False)
48 SingleSSHFile = getattr(ConfModule, 'singlesshfile', True)
51 UseSSL = ConfModule.usessl;
52 except AttributeError:
55 # Break up the keyring list
56 userdir_gpg.SetKeyrings(ConfModule.keyrings.split(":"))
58 # This is a list of common last-name prefixes
59 LastNamesPre = {"van": None, "von": None, "le": None, "de": None, "di": None};
61 # This is a list of common groups on Debian hosts
68 # ObjectClasses for different object types
69 UserObjectClasses = ("top", "inetOrgPerson", "debianAccount", "shadowAccount", "debianDeveloper")
70 RoleObjectClasses = ("top", "debianAccount", "shadowAccount", "debianRoleAccount")
71 GroupObjectClasses = ("top", "debianGroup")
73 # SSH Key splitting. The result is:
74 # (options,size,modulous,exponent,comment)
75 SSHAuthSplit = re.compile('^(.* )?(\d+) (\d+) (\d+) ?(.+)$');
76 SSH2AuthSplit = re.compile('^(.* )?ssh-(dss|rsa) ([a-zA-Z0-9=/+]+) ?(.+)$');
77 #'^([^\d](?:[^ "]+(?:".*")?)*)? ?(\d+) (\d+) (\d+) (.+)$');
79 AddressSplit = re.compile("(.*).*<([^@]*)@([^>]*)>");
81 # Safely get an attribute from a tuple representing a dn and an attribute
82 # list. It returns the first attribute if there are multi.
83 def GetAttr(DnRecord,Attribute,Default = ""):
85 return DnRecord[1][Attribute][0];
92 # Return a printable email address from the attributes.
93 def EmailAddress(DnRecord):
94 cn = GetAttr(DnRecord,"cn");
95 sn = GetAttr(DnRecord,"sn");
96 uid = GetAttr(DnRecord,"uid");
97 if cn == "" and sn == "":
98 return "<" + uid + "@" + EmailAppend + ">";
99 return cn + " " + sn + " <" + uid + "@" + EmailAppend + ">"
101 # Show a dump like ldapsearch
102 def PrettyShow(DnRecord):
104 List = DnRecord[1].keys();
107 Rec = DnRecord[1][x];
109 Result = Result + "%s: %s\n" % (x,i);
112 def connectLDAP(server = None):
116 l = ldap.open(server);
122 # Function to prompt for a password
123 def getpass(prompt = "Password: "):
125 fd = sys.stdin.fileno();
126 old = termios.tcgetattr(fd);
127 new = termios.tcgetattr(fd);
128 new[3] = new[3] & ~termios.ECHO; # lflags
130 termios.tcsetattr(fd, termios.TCSADRAIN, new);
132 passwd = raw_input(prompt);
133 except KeyboardInterrupt:
134 termios.tcsetattr(fd, termios.TCSADRAIN, old);
140 termios.tcsetattr(fd, termios.TCSADRAIN, old);
144 def passwdAccessLDAP(BaseDn, AdminUser):
146 Ask for the AdminUser's password and connect to the LDAP server.
147 Returns the connection handle.
149 print "Accessing LDAP directory as '" + AdminUser + "'";
151 Password = getpass(AdminUser + "'s password: ");
153 if len(Password) == 0:
157 UserDn = "uid=" + AdminUser + "," + BaseDn;
159 # Connect to the ldap server
161 l.simple_bind_s(UserDn,Password);
162 except ldap.INVALID_CREDENTIALS:
167 # Split up a name into multiple components. This tries to best guess how
170 Words = re.split(" ", Name.strip())
172 # Insert an empty middle name
173 if (len(Words) == 2):
178 # Put a dot after any 1 letter words, must be an initial
179 for x in range(0,len(Words)):
180 if len(Words[x]) == 1:
181 Words[x] = Words[x] + '.';
183 # If a word starts with a -, ( or [ we assume it marks the start of some
184 # Non-name information and remove the remainder of the string
185 for x in range(0,len(Words)):
186 if len(Words[x]) != 0 and (Words[x][0] == '-' or \
187 Words[x][0] == '(' or Words[x][0] == '['):
191 # Merge any of the middle initials
192 while len(Words) > 2 and len(Words[2]) == 2 and Words[2][1] == '.':
193 Words[1] = Words[1] + Words[2];
196 while len(Words) < 2:
199 # Merge any of the last name prefixes into one big last name
200 while LastNamesPre.has_key(Words[-2].lower()):
201 Words[-1] = Words[-2] + " " + Words[-1];
204 # Fix up a missing middle name after lastname globbing
205 if (len(Words) == 2):
208 # If the name is multi-word then we glob them all into the last name and
209 # do not worry about a middle name
211 Words[2] = " ".join(Words[1:])
214 return (Words[0].strip(), Words[1].strip(), Words[2].strip());
216 # Compute a random password using /dev/urandom
218 # Generate a 10 character random string
219 SaltVals = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ/.";
220 Rand = open("/dev/urandom");
222 for i in range(0,15):
223 Password = Password + SaltVals[ord(Rand.read(1)[0]) % len(SaltVals)];
226 # Compute the MD5 crypted version of the given password
227 def HashPass(Password):
228 # Hash it telling glibc to use the MD5 algorithm - if you dont have
229 # glibc then just change Salt = "$1$" to Salt = "";
230 SaltVals = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789/.";
232 Rand = open("/dev/urandom");
233 for x in range(0,10):
234 Salt = Salt + SaltVals[ord(Rand.read(1)[0]) % len(SaltVals)];
235 Pass = crypt.crypt(Password,Salt);
237 raise "Password Error", "MD5 password hashing failed, not changing the password!";
240 # Sync with the server, we count the number of async requests that are pending
241 # and make sure result has been called that number of times
242 def FlushOutstanding(l,Outstanding,Fast=0):
243 # Sync with the remote end
245 print "Waiting for",Outstanding,"requests:",
246 while (Outstanding > 0):
248 if Fast == 0 or Outstanding > 50:
249 sys.stdout.write(".",);
251 if (l.result(ldap.RES_ANY,1) != (None,None)):
252 Outstanding = Outstanding - 1;
254 if (l.result(ldap.RES_ANY,1,0) != (None,None)):
255 Outstanding = Outstanding - 1;
258 except ldap.TYPE_OR_VALUE_EXISTS:
259 Outstanding = Outstanding - 1;
260 except ldap.NO_SUCH_ATTRIBUTE:
261 Outstanding = Outstanding - 1;
262 except ldap.NO_SUCH_OBJECT:
263 Outstanding = Outstanding - 1;
268 # Convert a lat/long attribute into Decimal degrees
269 def DecDegree(Posn,Anon=0):
270 Parts = re.match('[-+]?(\d*)\\.?(\d*)',Posn).groups();
273 if (abs(Val) >= 1806060.0):
274 raise ValueError,"Too Big";
277 if abs(Val) >= 18060.0 or len(Parts[0]) > 5:
279 Secs = Val - long(Val);
280 Val = long(Val)/100.0;
281 Min = Val - long(Val);
282 Val = long(Val) + (Min*100.0 + Secs*100.0/60.0)/60.0;
285 elif abs(Val) >= 180 or len(Parts[0]) > 3:
287 Min = Val - long(Val);
288 Val = long(Val) + Min*100.0/60.0;
298 def FormatSSH2Auth(Str):
299 Match = SSH2AuthSplit.match(Str);
301 return "<unknown format>";
305 return "ssh-%s %s..%s %s"%(G[1],G[2][:8],G[2][-8:],G[3]);
306 return "%s ssh-%s %s..%s %s"%(G[0],G[1],G[2][:8],G[2][-8:],G[3]);
308 def FormatSSHAuth(Str):
309 Match = SSHAuthSplit.match(Str);
311 return FormatSSH2Auth(Str);
316 return "%s %s %s..%s %s"%(G[1],G[2],G[3][:8],G[3][-8:],G[4]);
317 return "%s %s %s %s..%s %s"%(G[0],G[1],G[2],G[3][:8],G[3][-8:],G[4]);
319 def FormatPGPKey(Str):
325 while (I < len(Str)):
327 Res = "%s %s%s "%(Res,Str[I],Str[I+1]);
329 Res = "%s%s%s "%(Res,Str[I],Str[I+1]);
331 elif (len(Str) == 40):
334 while (I < len(Str)):
336 Res = "%s %s%s%s%s "%(Res,Str[I],Str[I+1],Str[I+2],Str[I+3]);
338 Res = "%s%s%s%s%s "%(Res,Str[I],Str[I+1],Str[I+2],Str[I+3]);
344 # Take an email address and split it into 3 parts, (Name,UID,Domain)
345 def SplitEmail(Addr):
346 # Is not an email address at all
347 if Addr.find('@') == -1:
350 Res1 = rfc822.AddrlistClass(Addr).getaddress();
355 return (Res1[0],"","");
357 # If there is no @ then the address was not parsed well. Try the alternate
358 # Parsing scheme. This is particularly important when scanning PGP keys.
359 Res2 = Res1[1].split("@");
361 Match = AddressSplit.match(Addr);
364 return Match.groups();
366 return (Res1[0],Res2[0],Res2[1]);
368 # Convert the PGP name string to a uid value. The return is a tuple of
369 # (uid,[message strings]). UnknownMpa is a hash from email to uid that
370 # overrides normal searching.
371 def GetUID(l,Name,UnknownMap = {}):
372 # Crack up the email address into a best guess first/middle/last name
373 (cn,mn,sn) = NameSplit(re.sub('["]','',Name[0]))
375 # Brackets anger the ldap searcher
376 cn = re.sub('[(")]','?',cn);
377 sn = re.sub('[(")]','?',sn);
379 # First check the unknown map for the email address
380 if UnknownMap.has_key(Name[1] + '@' + Name[2]):
381 Stat = "unknown map hit for "+str(Name);
382 return (UnknownMap[Name[1] + '@' + Name[2]],[Stat]);
384 # Then the cruft component (ie there was no email address to match)
385 if UnknownMap.has_key(Name[2]):
386 Stat = "unknown map hit for"+str(Name);
387 return (UnknownMap[Name[2]],[Stat]);
389 # Then the name component (another ie there was no email address to match)
390 if UnknownMap.has_key(Name[0]):
391 Stat = "unknown map hit for"+str(Name);
392 return (UnknownMap[Name[0]],[Stat]);
394 # Search for a possible first/last name hit
396 Attrs = l.search_s(BaseDn,ldap.SCOPE_ONELEVEL,"(&(cn=%s)(sn=%s))"%(cn,sn),["uid"]);
397 except ldap.FILTER_ERROR:
398 Stat = "Filter failure: (&(cn=%s)(sn=%s))"%(cn,sn);
399 return (None,[Stat]);
401 # Try matching on the email address
402 if (len(Attrs) != 1):
404 Attrs = l.search_s(BaseDn,ldap.SCOPE_ONELEVEL,"emailforward=%s"%(Name[2]),["uid"]);
405 except ldap.FILTER_ERROR:
408 # Hmm, more than one/no return
409 if (len(Attrs) != 1):
410 # Key claims a local address
411 if Name[2] == EmailAppend:
413 # Pull out the record for the claimed user
414 Attrs = l.search_s(BaseDn,ldap.SCOPE_ONELEVEL,"(uid=%s)"%(Name[1]),["uid","sn","cn"]);
416 # We require the UID surname to be someplace in the key name, this
417 # deals with special purpose keys like 'James Troup (Alternate Debian key)'
418 # Some people put their names backwards on their key too.. check that as well
419 if len(Attrs) == 1 and \
420 ( sn.lower().find(Attrs[0][1]["sn"][0].lower()) != -1 or \
421 cn.lower().find(Attrs[0][1]["sn"][0].lower()) != -1 ):
422 Stat = EmailAppend+" hit for "+str(Name);
423 return (Name[1],[Stat]);
425 # Attempt to give some best guess suggestions for use in editing the
427 Attrs = l.search_s(BaseDn,ldap.SCOPE_ONELEVEL,"(sn~=%s)"%(sn),["uid","sn","cn"]);
431 Stat = ["None for %s"%(str(Name))];
433 Stat.append("But might be: %s %s <%s@debian.org>"%(x[1]["cn"][0],x[1]["sn"][0],x[1]["uid"][0]));
436 return (Attrs[0][1]["uid"][0],None);
440 def Group2GID(l, name):
442 Returns the numerical id of a common group
445 for g in DebianGroups.keys():
447 return DebianGroups[g]
449 filter = "(gid=%s)" % name
450 res = l.search_s(BaseDn,ldap.SCOPE_ONELEVEL,filter,["gidNumber"]);
452 return int(GetAttr(res[0], "gidNumber"))
457 File = open(PassDir+"/key-hmac-"+pwd.getpwuid(os.getuid())[0],"r");
458 HmacKey = File.readline().strip()
460 return hmac.new(HmacKey, str, sha1_module).hexdigest()
462 def make_sudopasswd_hmac(purpose, uuid, hosts, cryptedpass):
463 return make_hmac(':'.join([purpose, uuid, hosts, cryptedpass]))