1 # Copyright (c) 1999-2000 Jason Gunthorpe <jgg@debian.org>
2 # Copyright (c) 2001-2003 Ryan Murray <rmurray@debian.org>
3 # Copyright (c) 2004 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, string, imp, ldap, sys, whrandom, crypt, rfc822;
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 # Break up the keyring list
45 userdir_gpg.SetKeyrings(string.split(ConfModule.keyrings,":"));
47 # This is a list of common last-name prefixes
48 LastNamesPre = {"van": None, "von": None, "le": None, "de": None, "di": None};
50 # This is a list of common groups on Debian hosts
51 DebianGroups = {"Debian": 800, "guest": 60000}
53 # SSH Key splitting. The result is:
54 # (options,size,modulous,exponent,comment)
55 SSHAuthSplit = re.compile('^(.* )?(\d+) (\d+) (\d+) ?(.+)$');
56 SSH2AuthSplit = re.compile('^(.* )?ssh-(dss|rsa) ([a-zA-Z0-9=/+]+) ?(.+)$');
57 #'^([^\d](?:[^ "]+(?:".*")?)*)? ?(\d+) (\d+) (\d+) (.+)$');
59 AddressSplit = re.compile("(.*).*<([^@]*)@([^>]*)>");
61 # Safely get an attribute from a tuple representing a dn and an attribute
62 # list. It returns the first attribute if there are multi.
63 def GetAttr(DnRecord,Attribute,Default = ""):
65 return DnRecord[1][Attribute][0];
72 # Return a printable email address from the attributes.
73 def EmailAddress(DnRecord):
74 cn = GetAttr(DnRecord,"cn");
75 sn = GetAttr(DnRecord,"sn");
76 uid = GetAttr(DnRecord,"uid");
77 if cn == "" and sn == "":
78 return "<" + uid + "@" + EmailAppend + ">";
79 return cn + " " + sn + " <" + uid + "@" + EmailAppend + ">"
81 # Show a dump like ldapsearch
82 def PrettyShow(DnRecord):
84 List = DnRecord[1].keys();
89 Result = Result + "%s: %s\n" % (x,i);
92 # Function to prompt for a password
93 def getpass(prompt = "Password: "):
95 fd = sys.stdin.fileno();
96 old = termios.tcgetattr(fd);
97 new = termios.tcgetattr(fd);
98 new[3] = new[3] & ~termios.ECHO; # lflags
100 termios.tcsetattr(fd, termios.TCSADRAIN, new);
101 passwd = raw_input(prompt);
103 termios.tcsetattr(fd, termios.TCSADRAIN, old);
107 # Split up a name into multiple components. This tries to best guess how
110 Words = re.split(" ",string.strip(Name));
112 # Insert an empty middle name
113 if (len(Words) == 2):
118 # Put a dot after any 1 letter words, must be an initial
119 for x in range(0,len(Words)):
120 if len(Words[x]) == 1:
121 Words[x] = Words[x] + '.';
123 # If a word starts with a -, ( or [ we assume it marks the start of some
124 # Non-name information and remove the remainder of the string
125 for x in range(0,len(Words)):
126 if len(Words[x]) != 0 and (Words[x][0] == '-' or \
127 Words[x][0] == '(' or Words[x][0] == '['):
131 # Merge any of the middle initials
132 while len(Words) > 2 and len(Words[2]) == 2 and Words[2][1] == '.':
133 Words[1] = Words[1] + Words[2];
136 while len(Words) < 2:
139 # Merge any of the last name prefixes into one big last name
140 while LastNamesPre.has_key(string.lower(Words[-2])):
141 Words[-1] = Words[-2] + " " + Words[-1];
144 # Fix up a missing middle name after lastname globbing
145 if (len(Words) == 2):
148 # If the name is multi-word then we glob them all into the last name and
149 # do not worry about a middle name
151 Words[2] = string.join(Words[1:]);
154 return (string.strip(Words[0]),string.strip(Words[1]),string.strip(Words[2]));
156 # Compute a random password using /dev/urandom
158 # Generate a 10 character random string
159 SaltVals = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ/.";
160 Rand = open("/dev/urandom");
162 for i in range(0,15):
163 Password = Password + SaltVals[ord(Rand.read(1)[0]) % len(SaltVals)];
166 # Compute the MD5 crypted version of the given password
167 def HashPass(Password):
168 # Hash it telling glibc to use the MD5 algorithm - if you dont have
169 # glibc then just change Salt = "$1$" to Salt = "";
170 SaltVals = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789/.";
172 Rand = open("/dev/urandom");
173 for x in range(0,10):
174 Salt = Salt + SaltVals[ord(Rand.read(1)[0]) % len(SaltVals)];
175 Pass = crypt.crypt(Password,Salt);
177 raise "Password Error", "MD5 password hashing failed, not changing the password!";
180 # Sync with the server, we count the number of async requests that are pending
181 # and make sure result has been called that number of times
182 def FlushOutstanding(l,Outstanding,Fast=0):
183 # Sync with the remote end
185 print "Waiting for",Outstanding,"requests:",
186 while (Outstanding > 0):
188 if Fast == 0 or Outstanding > 50:
189 sys.stdout.write(".",);
191 if (l.result(ldap.RES_ANY,1) != (None,None)):
192 Outstanding = Outstanding - 1;
194 if (l.result(ldap.RES_ANY,1,0) != (None,None)):
195 Outstanding = Outstanding - 1;
198 except ldap.TYPE_OR_VALUE_EXISTS:
199 Outstanding = Outstanding - 1;
200 except ldap.NO_SUCH_ATTRIBUTE:
201 Outstanding = Outstanding - 1;
202 except ldap.NO_SUCH_OBJECT:
203 Outstanding = Outstanding - 1;
208 # Convert a lat/long attribute into Decimal degrees
209 def DecDegree(Posn,Anon=0):
210 Parts = re.match('[-+]?(\d*)\\.?(\d*)',Posn).groups();
211 Val = string.atof(Posn);
213 if (abs(Val) >= 1806060.0):
214 raise ValueError,"Too Big";
217 if abs(Val) >= 18060.0 or len(Parts[0]) > 5:
219 Secs = Val - long(Val);
220 Val = long(Val)/100.0;
221 Min = Val - long(Val);
222 Val = long(Val) + (Min*100.0 + Secs*100.0/60.0)/60.0;
225 elif abs(Val) >= 180 or len(Parts[0]) > 3:
227 Min = Val - long(Val);
228 Val = long(Val) + Min*100.0/60.0;
238 def FormatSSH2Auth(Str):
239 Match = SSH2AuthSplit.match(Str);
241 return "<unknown format>";
245 return "ssh-%s %s..%s %s"%(G[1],G[2][:8],G[2][-8:],G[3]);
246 return "%s ssh-%s %s..%s %s"%(G[0],G[1],G[2][:8],G[2][-8:],G[3]);
248 def FormatSSHAuth(Str):
249 Match = SSHAuthSplit.match(Str);
251 return FormatSSH2Auth(Str);
256 return "%s %s %s..%s %s"%(G[1],G[2],G[3][:8],G[3][-8:],G[4]);
257 return "%s %s %s %s..%s %s"%(G[0],G[1],G[2],G[3][:8],G[3][-8:],G[4]);
259 def FormatPGPKey(Str):
265 while (I < len(Str)):
267 Res = "%s %s%s "%(Res,Str[I],Str[I+1]);
269 Res = "%s%s%s "%(Res,Str[I],Str[I+1]);
271 elif (len(Str) == 40):
274 while (I < len(Str)):
276 Res = "%s %s%s%s%s "%(Res,Str[I],Str[I+1],Str[I+2],Str[I+3]);
278 Res = "%s%s%s%s%s "%(Res,Str[I],Str[I+1],Str[I+2],Str[I+3]);
282 return string.strip(Res);
284 # Take an email address and split it into 3 parts, (Name,UID,Domain)
285 def SplitEmail(Addr):
286 # Is not an email address at all
287 if string.find(Addr,'@') == -1:
290 Res1 = rfc822.AddrlistClass(Addr).getaddress();
295 return (Res1[0],"","");
297 # If there is no @ then the address was not parsed well. Try the alternate
298 # Parsing scheme. This is particularly important when scanning PGP keys.
299 Res2 = string.split(Res1[1],"@");
301 Match = AddressSplit.match(Addr);
304 return Match.groups();
306 return (Res1[0],Res2[0],Res2[1]);
308 # Convert the PGP name string to a uid value. The return is a tuple of
309 # (uid,[message strings]). UnknownMpa is a hash from email to uid that
310 # overrides normal searching.
311 def GetUID(l,Name,UnknownMap = {}):
312 # Crack up the email address into a best guess first/middle/last name
313 (cn,mn,sn) = NameSplit(re.sub('["]','',Name[0]))
315 # Brackets anger the ldap searcher
316 cn = re.sub('[(")]','?',cn);
317 sn = re.sub('[(")]','?',sn);
319 # First check the unknown map for the email address
320 if UnknownMap.has_key(Name[1] + '@' + Name[2]):
321 Stat = "unknown map hit for "+str(Name);
322 return (UnknownMap[Name[1] + '@' + Name[2]],[Stat]);
324 # Then the cruft component (ie there was no email address to match)
325 if UnknownMap.has_key(Name[2]):
326 Stat = "unknown map hit for"+str(Name);
327 return (UnknownMap[Name[2]],[Stat]);
329 # Then the name component (another ie there was no email address to match)
330 if UnknownMap.has_key(Name[0]):
331 Stat = "unknown map hit for"+str(Name);
332 return (UnknownMap[Name[0]],[Stat]);
334 # Search for a possible first/last name hit
336 Attrs = l.search_s(BaseDn,ldap.SCOPE_ONELEVEL,"(&(cn=%s)(sn=%s))"%(cn,sn),["uid"]);
337 except ldap.FILTER_ERROR:
338 Stat = "Filter failure: (&(cn=%s)(sn=%s))"%(cn,sn);
339 return (None,[Stat]);
341 # Try matching on the email address
342 if (len(Attrs) != 1):
344 Attrs = l.search_s(BaseDn,ldap.SCOPE_ONELEVEL,"emailforward=%s"%(Name[2]),["uid"]);
345 except ldap.FILTER_ERROR:
348 # Hmm, more than one/no return
349 if (len(Attrs) != 1):
350 # Key claims a local address
351 if Name[2] == EmailAppend:
353 # Pull out the record for the claimed user
354 Attrs = l.search_s(BaseDn,ldap.SCOPE_ONELEVEL,"(uid=%s)"%(Name[1]),["uid","sn","cn"]);
356 # We require the UID surname to be someplace in the key name, this
357 # deals with special purpose keys like 'James Troup (Alternate Debian key)'
358 # Some people put their names backwards on their key too.. check that as well
359 if len(Attrs) == 1 and \
360 (string.find(string.lower(sn),string.lower(Attrs[0][1]["sn"][0])) != -1 or \
361 string.find(string.lower(cn),string.lower(Attrs[0][1]["sn"][0])) != -1):
362 Stat = EmailAppend+" hit for "+str(Name);
363 return (Name[1],[Stat]);
365 # Attempt to give some best guess suggestions for use in editing the
367 Attrs = l.search_s(BaseDn,ldap.SCOPE_ONELEVEL,"(sn~=%s)"%(sn),["uid","sn","cn"]);
371 Stat = ["None for %s"%(str(Name))];
373 Stat.append("But might be: %s %s <%s@debian.org>"%(x[1]["cn"][0],x[1]["sn"][0],x[1]["uid"][0]));
376 return (Attrs[0][1]["uid"][0],None);
381 """Returns the numerical id of a common group"""
382 for g in DebianGroups.keys():
384 return DebianGroups[g]