1 # Some routines and configuration that are used by the ldap progams
2 import termios, re, string, imp, ldap, sys, whrandom, crypt, rfc822;
6 File = open("/etc/userdir-ldap/userdir-ldap.conf");
8 File = open("userdir-ldap.conf");
9 ConfModule = imp.load_source("userdir_config","/etc/userdir-ldap.conf",File);
13 BaseDn = ConfModule.basedn;
14 HostBaseDn = ConfModule.hostbasedn;
15 LDAPServer = ConfModule.ldaphost;
16 EmailAppend = ConfModule.emailappend;
17 AdminUser = ConfModule.adminuser;
18 GenerateDir = ConfModule.generatedir;
19 GenerateConf = ConfModule.generateconf;
20 DefaultGID = ConfModule.defaultgid;
21 TemplatesDir = ConfModule.templatesdir;
22 PassDir = ConfModule.passdir;
23 Ech_ErrorLog = ConfModule.ech_errorlog;
24 Ech_MainLog = ConfModule.ech_mainlog;
26 # Break up the keyring list
27 userdir_gpg.SetKeyrings(string.split(ConfModule.keyrings,":"));
29 # This is a list of common last-name prefixes
30 LastNamesPre = {"van": None, "le": None, "de": None, "di": None};
32 # SSH Key splitting. The result is:
33 # (options,size,modulous,exponent,comment)
34 SSHAuthSplit = re.compile('^(.* )?(\d+) (\d+) (\d+) ?(.+)$');
35 SSH2AuthSplit = re.compile('^(.* )?ssh-(dss|rsa) ([a-zA-Z0-9=/+]+) ?(.+)$');
36 #'^([^\d](?:[^ "]+(?:".*")?)*)? ?(\d+) (\d+) (\d+) (.+)$');
38 AddressSplit = re.compile("(.*).*<([^@]*)@([^>]*)>");
40 # Safely get an attribute from a tuple representing a dn and an attribute
41 # list. It returns the first attribute if there are multi.
42 def GetAttr(DnRecord,Attribute,Default = ""):
44 return DnRecord[1][Attribute][0];
51 # Return a printable email address from the attributes.
52 def EmailAddress(DnRecord):
53 cn = GetAttr(DnRecord,"cn");
54 sn = GetAttr(DnRecord,"sn");
55 uid = GetAttr(DnRecord,"uid");
56 if cn == "" and sn == "":
57 return "<" + uid + "@" + EmailAppend + ">";
58 return cn + " " + sn + " <" + uid + "@" + EmailAppend + ">"
60 # Show a dump like ldapsearch
61 def PrettyShow(DnRecord):
63 List = DnRecord[1].keys();
68 Result = Result + "%s: %s\n" % (x,i);
71 # Function to prompt for a password
72 def getpass(prompt = "Password: "):
74 fd = sys.stdin.fileno();
75 old = termios.tcgetattr(fd);
76 new = termios.tcgetattr(fd);
77 new[3] = new[3] & ~termios.ECHO; # lflags
79 termios.tcsetattr(fd, termios.TCSADRAIN, new);
80 passwd = raw_input(prompt);
82 termios.tcsetattr(fd, termios.TCSADRAIN, old);
86 # Split up a name into multiple components. This tries to best guess how
89 Words = re.split(" ",string.strip(Name));
91 # Insert an empty middle name
97 # Put a dot after any 1 letter words, must be an initial
98 for x in range(0,len(Words)):
99 if len(Words[x]) == 1:
100 Words[x] = Words[x] + '.';
102 # If a word starts with a -, ( or [ we assume it marks the start of some
103 # Non-name information and remove the remainder of the string
104 for x in range(0,len(Words)):
105 if len(Words[x]) != 0 and (Words[x][0] == '-' or \
106 Words[x][0] == '(' or Words[x][0] == '['):
110 # Merge any of the middle initials
111 while len(Words) > 2 and len(Words[2]) == 2 and Words[2][1] == '.':
112 Words[1] = Words[1] + Words[2];
115 while len(Words) < 2:
118 # Merge any of the last name prefixes into one big last name
119 while LastNamesPre.has_key(string.lower(Words[-2])):
120 Words[-1] = Words[-2] + " " + Words[-1];
123 # Fix up a missing middle name after lastname globbing
124 if (len(Words) == 2):
127 # If the name is multi-word then we glob them all into the last name and
128 # do not worry about a middle name
130 Words[2] = string.join(Words[1:]);
133 return (string.strip(Words[0]),string.strip(Words[1]),string.strip(Words[2]));
135 # Compute a random password using /dev/urandom
137 # Generate a 10 character random string
138 SaltVals = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ/.";
139 Rand = open("/dev/urandom");
141 for i in range(0,15):
142 Password = Password + SaltVals[ord(Rand.read(1)[0]) % len(SaltVals)];
145 # Compute the MD5 crypted version of the given password
146 def HashPass(Password):
147 # Hash it telling glibc to use the MD5 algorithm - if you dont have
148 # glibc then just change Salt = "$1$" to Salt = "";
149 SaltVals = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789/.";
151 Rand = open("/dev/urandom");
152 for x in range(0,10):
153 Salt = Salt + SaltVals[ord(Rand.read(1)[0]) % len(SaltVals)];
154 Pass = crypt.crypt(Password,Salt);
156 raise "Password Error", "MD5 password hashing failed, not changing the password!";
159 # Sync with the server, we count the number of async requests that are pending
160 # and make sure result has been called that number of times
161 def FlushOutstanding(l,Outstanding,Fast=0):
162 # Sync with the remote end
164 print "Waiting for",Outstanding,"requests:",
165 while (Outstanding > 0):
167 if Fast == 0 or Outstanding > 50:
168 sys.stdout.write(".",);
170 if (l.result(ldap.RES_ANY,1) != (None,None)):
171 Outstanding = Outstanding - 1;
173 if (l.result(ldap.RES_ANY,1,0) != (None,None)):
174 Outstanding = Outstanding - 1;
177 except ldap.TYPE_OR_VALUE_EXISTS:
178 Outstanding = Outstanding - 1;
179 except ldap.NO_SUCH_ATTRIBUTE:
180 Outstanding = Outstanding - 1;
181 except ldap.NO_SUCH_OBJECT:
182 Outstanding = Outstanding - 1;
187 # Convert a lat/long attribute into Decimal degrees
188 def DecDegree(Posn,Anon=0):
189 Parts = re.match('[-+]?(\d*)\\.?(\d*)',Posn).groups();
190 Val = string.atof(Posn);
192 if (abs(Val) >= 1806060.0):
193 raise ValueError,"Too Big";
196 if abs(Val) >= 18060.0 or len(Parts[0]) > 5:
198 Secs = Val - long(Val);
199 Val = long(Val)/100.0;
200 Min = Val - long(Val);
201 Val = long(Val) + (Min*100.0 + Secs*100.0/60.0)/60.0;
204 elif abs(Val) >= 180 or len(Parts[0]) > 3:
206 Min = Val - long(Val);
207 Val = long(Val) + Min*100.0/60.0;
217 def FormatSSH2Auth(Str):
218 Match = SSH2AuthSplit.match(Str);
220 return "<unknown format>";
224 return "ssh-%s %s..%s %s"%(G[1],G[2][:8],G[2][-8:],G[3]);
225 return "%s ssh-%s %s..%s %s"%(G[0],G[1],G[2][:8],G[2][-8:],G[3]);
227 def FormatSSHAuth(Str):
228 Match = SSHAuthSplit.match(Str);
230 return FormatSSH2Auth(Str);
235 return "%s %s %s..%s %s"%(G[1],G[2],G[3][:8],G[3][-8:],G[4]);
236 return "%s %s %s %s..%s %s"%(G[0],G[1],G[2],G[3][:8],G[3][-8:],G[4]);
238 def FormatPGPKey(Str):
244 while (I < len(Str)):
246 Res = "%s %s%s "%(Res,Str[I],Str[I+1]);
248 Res = "%s%s%s "%(Res,Str[I],Str[I+1]);
250 elif (len(Str) == 40):
253 while (I < len(Str)):
255 Res = "%s %s%s%s%s "%(Res,Str[I],Str[I+1],Str[I+2],Str[I+3]);
257 Res = "%s%s%s%s%s "%(Res,Str[I],Str[I+1],Str[I+2],Str[I+3]);
261 return string.strip(Res);
263 # Take an email address and split it into 3 parts, (Name,UID,Domain)
264 def SplitEmail(Addr):
265 # Is not an email address at all
266 if string.find(Addr,'@') == -1:
269 Res1 = rfc822.AddrlistClass(Addr).getaddress();
274 return (Res1[0],"","");
276 # If there is no @ then the address was not parsed well. Try the alternate
277 # Parsing scheme. This is particularly important when scanning PGP keys.
278 Res2 = string.split(Res1[1],"@");
280 Match = AddressSplit.match(Addr);
283 return Match.groups();
285 return (Res1[0],Res2[0],Res2[1]);
287 # Convert the PGP name string to a uid value. The return is a tuple of
288 # (uid,[message strings]). UnknownMpa is a hash from email to uid that
289 # overrides normal searching.
290 def GetUID(l,Name,UnknownMap = {}):
291 # Crack up the email address into a best guess first/middle/last name
292 (cn,mn,sn) = NameSplit(re.sub('["]','',Name[0]))
294 # Brackets anger the ldap searcher
295 cn = re.sub('[(")]','?',cn);
296 sn = re.sub('[(")]','?',sn);
298 # First check the unknown map for the email address
299 if UnknownMap.has_key(Name[1] + '@' + Name[2]):
300 Stat = "unknown map hit for "+str(Name);
301 return (UnknownMap[Name[1] + '@' + Name[2]],[Stat]);
303 # Then the cruft component (ie there was no email address to match)
304 if UnknownMap.has_key(Name[2]):
305 Stat = "unknown map hit for"+str(Name);
306 return (UnknownMap[Name[2]],[Stat]);
308 # Then the name component (another ie there was no email address to match)
309 if UnknownMap.has_key(Name[0]):
310 Stat = "unknown map hit for"+str(Name);
311 return (UnknownMap[Name[0]],[Stat]);
313 # Search for a possible first/last name hit
315 Attrs = l.search_s(BaseDn,ldap.SCOPE_ONELEVEL,"(&(cn=%s)(sn=%s))"%(cn,sn),["uid"]);
316 except ldap.FILTER_ERROR:
317 Stat = "Filter failure: (&(cn=%s)(sn=%s))"%(cn,sn);
318 return (None,[Stat]);
320 # Try matching on the email address
321 if (len(Attrs) != 1):
323 Attrs = l.search_s(BaseDn,ldap.SCOPE_ONELEVEL,"emailforward=%s"%(Name[2]),["uid"]);
324 except ldap.FILTER_ERROR:
327 # Hmm, more than one/no return
328 if (len(Attrs) != 1):
329 # Key claims a local address
330 if Name[2] == EmailAppend:
332 # Pull out the record for the claimed user
333 Attrs = l.search_s(BaseDn,ldap.SCOPE_ONELEVEL,"(uid=%s)"%(Name[1]),["uid","sn","cn"]);
335 # We require the UID surname to be someplace in the key name, this
336 # deals with special purpose keys like 'James Troup (Alternate Debian key)'
337 # Some people put their names backwards on their key too.. check that as well
338 if len(Attrs) == 1 and \
339 (string.find(string.lower(sn),string.lower(Attrs[0][1]["sn"][0])) != -1 or \
340 string.find(string.lower(cn),string.lower(Attrs[0][1]["sn"][0])) != -1):
341 Stat = EmailAppend+" hit for "+str(Name);
342 return (Name[1],[Stat]);
344 # Attempt to give some best guess suggestions for use in editing the
346 Attrs = l.search_s(BaseDn,ldap.SCOPE_ONELEVEL,"(sn~=%s)"%(sn),["uid","sn","cn"]);
350 Stat = ["None for %s"%(str(Name))];
352 Stat.append("But might be: %s %s <%s@debian.org>"%(x[1]["cn"][0],x[1]["sn"][0],x[1]["uid"][0]));
355 return (Attrs[0][1]["uid"][0],None);