ud-generate

   1 #!/usr/bin/env python
   2 # -*- mode: python -*-
   3 # Generates passwd, shadow and group files from the ldap directory.
   4
   5 import string, re, time, ldap, getopt, sys, os, pwd, posix;
   6 from userdir_ldap import *;
   7
   8 PasswdAttrs = None;
   9 GroupIDMap = {};
  10 Allowed = None;
  11 CurrentHost = "";
  12
  13 EmailCheck = re.compile("^([^ <>@]+@[^ ,<>@]+)?$");
  14 BSMTPCheck = re.compile(".*mx 0 klecker\.debian\.org\..*",re.DOTALL);
  15 DNSZone = ".debian.net"
  16
  17 def Sanitize(Str):
  18   return string.translate(Str,string.maketrans("\n\r\t","$$$"));
  19
  20 def DoLink(From,To,File):
  21    try: posix.remove(To+File);
  22    except: pass;
  23    posix.link(From+File,To+File);
  24
  25 # See if this user is in the group list
  26 def IsInGroup(DnRecord):
  27   global Allowed,CurrentHost;
  28   if Allowed == None:
  29      return 1;
  30
  31   # See if the primary group is in the list
  32   if Allowed.has_key(GetAttr(DnRecord,"gidnumber")) != 0:
  33      return 1;
  34
  35   # Check the host based ACL
  36   if DnRecord[1].has_key("allowedhosts") != 0:
  37      for I in DnRecord[1]["allowedhosts"]:
  38         if CurrentHost == I:
  39            return 1;
  40
  41   # See if there are supplementary groups
  42   if DnRecord[1].has_key("supplementarygid") == 0:
  43      return 0;
  44
  45   # Check the supplementary groups
  46   for I in DnRecord[1]["supplementarygid"]:
  47      if Allowed.has_key(I):
  48         return 1;
  49   return 0;
  50
  51 def Die(File,F,Fdb):
  52    if F != None:
  53       F.close();
  54    if Fdb != None:
  55       Fdb.close();
  56    try: os.remove(File + ".tmp");
  57    except: pass;
  58    try: os.remove(File + ".tdb.tmp");
  59    except: pass;
  60
  61 def Done(File,F,Fdb):
  62   if F != None:
  63     F.close();
  64     os.rename(File + ".tmp",File);
  65   if Fdb != None:
  66     Fdb.close();
  67     os.rename(File + ".tdb.tmp",File+".tdb");
  68
  69 # Generate the password list
  70 def GenPasswd(l,File,HomePrefix):
  71   F = None;
  72   Fdb = None;
  73   try:
  74    F = open(File + ".tmp","w");
  75    Fdb = open(File + ".tdb.tmp","w");
  76
  77    # Fetch all the users
  78    global PasswdAttrs;
  79    if PasswdAttrs == None:
  80       raise "No Users";
  81
  82    I = 0;
  83    for x in PasswdAttrs:
  84       if x[1].has_key("uidnumber") == 0 or IsInGroup(x) == 0:
  85          continue;
  86
  87       # Do not let people try to buffer overflow some busted passwd parser.
  88       if len(GetAttr(x,"gecos")) > 100 or len(GetAttr(x,"loginshell")) > 50:
  89          continue;
  90
  91       Line = "%s:x:%s:%s:%s:%s%s:%s\n" % (GetAttr(x,"uid"),\
  92               GetAttr(x,"uidnumber"),GetAttr(x,"gidnumber"),\
  93               GetAttr(x,"gecos"),HomePrefix,GetAttr(x,"uid"),\
  94               GetAttr(x,"loginshell"));
  95       F.write(Line);
  96       Fdb.write("0%u %s" % (I,Line));
  97       Fdb.write(".%s %s" % (GetAttr(x,"uid"),Line));
  98       Fdb.write("=%s %s" % (GetAttr(x,"uidnumber"),Line));
  99       I = I + 1;
 100
 101   # Oops, something unspeakable happened.
 102   except:
 103    Die(File,F,Fdb);
 104    raise;
 105   Done(File,F,Fdb);
 106
 107 # Generate the shadow list
 108 def GenShadow(l,File):
 109   F = None;
 110   Fdb = None;
 111   try:
 112    OldMask = os.umask(0077);
 113    F = open(File + ".tmp","w",0600);
 114    Fdb = open(File + ".tdb.tmp","w",0600);
 115    os.umask(OldMask);
 116
 117    # Fetch all the users
 118    global PasswdAttrs;
 119    if PasswdAttrs == None:
 120       raise "No Users";
 121
 122    I = 0;
 123    for x in PasswdAttrs:
 124       if x[1].has_key("uidnumber") == 0 or IsInGroup(x) == 0:
 125          continue;
 126
 127       Pass = GetAttr(x,"userpassword");
 128       if Pass[0:7] != "{crypt}" or len(Pass) > 50:
 129          Pass = '*';
 130       else:
 131          Pass = Pass[7:];
 132       Line = "%s:%s:%s:%s:%s:%s:%s:%s:" % (GetAttr(x,"uid"),\
 133               Pass,GetAttr(x,"shadowlastchange"),\
 134               GetAttr(x,"shadowmin"),GetAttr(x,"shadowmax"),\
 135               GetAttr(x,"shadowwarning"),GetAttr(x,"shadowinactive"),\
 136               GetAttr(x,"shadowexpire"));
 137       Line = Sanitize(Line) + "\n";
 138       F.write(Line);
 139       Fdb.write("0%u %s" % (I,Line));
 140       Fdb.write(".%s %s" % (GetAttr(x,"uid"),Line));
 141       I = I + 1;
 142
 143   # Oops, something unspeakable happened.
 144   except:
 145    Die(File,F,Fdb);
 146    raise;
 147   Done(File,F,Fdb);
 148
 149 # Generate the shadow list
 150 def GenSSHShadow(l,File):
 151   F = None;
 152   Fdb = None;
 153   try:
 154    OldMask = os.umask(0077);
 155    F = open(File + ".tmp","w",0600);
 156    Fdb = os.popen("cdbmake %s.cdb %s.cdb.tmp"%(File,File),"w");
 157    os.umask(OldMask);
 158
 159    # Fetch all the users
 160    global PasswdAttrs;
 161    if PasswdAttrs == None:
 162       raise "No Users";
 163
 164    I = 0;
 165    for x in PasswdAttrs:
 166       if x[1].has_key("uidnumber") == 0 or \
 167          x[1].has_key("sshrsaauthkey") == 0:
 168          continue;
 169       for I in x[1]["sshrsaauthkey"]:
 170          User = GetAttr(x,"uid");
 171          Line = "%s: %s" %(User,I);
 172          Line = Sanitize(Line) + "\n";
 173          F.write(Line);
 174          Fdb.write("+%d,%d:%s->%s\n"%(len(User),len(I),User,I));
 175    Fdb.write("\n");
 176   # Oops, something unspeakable happened.
 177   except:
 178    Die(File,F,Fdb);
 179    raise;
 180   if Fdb.close() != None:
 181      raise "cdbmake gave an error";
 182   Done(File,F,None);
 183
 184 def GenSSH2Shadow(l,File):
 185   F = None;
 186   Fdb = None;
 187   try:
 188    OldMask = os.umask(0077);
 189    F = open(File + ".tmp","w",0600);
 190    Fdb = os.popen("cdbmake %s.cdb %s.cdb.tmp"%(File,File),"w");
 191    os.umask(OldMask);
 192
 193    # Fetch all the users
 194    global PasswdAttrs;
 195    if PasswdAttrs == None:
 196       raise "No Users";
 197
 198    I = 0;
 199    for x in PasswdAttrs:
 200       if x[1].has_key("uidnumber") == 0 or \
 201          x[1].has_key("sshdsaauthkey") == 0:
 202          continue;
 203       for I in x[1]["sshdsaauthkey"]:
 204          User = GetAttr(x,"uid");
 205          Line = "%s: %s" %(User,I);
 206          Line = Sanitize(Line) + "\n";
 207          F.write(Line);
 208          Fdb.write("+%d,%d:%s->%s\n"%(len(User),len(I),User,I));
 209    Fdb.write("\n");
 210   # Oops, something unspeakable happened.
 211   except:
 212    Die(File,F,Fdb);
 213    raise;
 214   if Fdb.close() != None:
 215      raise "cdbmake gave an error";
 216   Done(File,F,None);
 217
 218 # Generate the group list
 219 def GenGroup(l,File):
 220   F = None;
 221   Fdb = None;
 222   try:
 223    F = open(File + ".tmp","w");
 224    Fdb = open(File + ".tdb.tmp","w");
 225
 226    # Generate the GroupMap
 227    GroupMap = {};
 228    for x in GroupIDMap.keys():
 229       GroupMap[x] = [];
 230
 231    # Fetch all the users
 232    global PasswdAttrs;
 233    if PasswdAttrs == None:
 234       raise "No Users";
 235
 236    # Sort them into a list of groups having a set of users
 237    for x in PasswdAttrs:
 238       if x[1].has_key("uidnumber") == 0 or IsInGroup(x) == 0:
 239          continue;
 240       if x[1].has_key("supplementarygid") == 0:
 241          continue;
 242
 243       for I in x[1]["supplementarygid"]:
 244          if GroupMap.has_key(I):
 245             GroupMap[I].append(GetAttr(x,"uid"));
 246          else:
 247             print "Group does not exist ",I,"but",GetAttr(x,"uid"),"is in it";
 248
 249    # Output the group file.
 250    Counter = 0;
 251    for x in GroupMap.keys():
 252       if GroupIDMap.has_key(x) == 0:
 253          continue;
 254       Line = "%s:x:%u:" % (x,GroupIDMap[x]);
 255       Comma = '';
 256       for I in GroupMap[x]:
 257         Line = Line + ("%s%s" % (Comma,I));
 258         Comma = ',';
 259       Line = Sanitize(Line) + "\n";
 260       F.write(Line);
 261       Fdb.write("0%u %s" % (Counter,Line));
 262       Fdb.write(".%s %s" % (x,Line));
 263       Fdb.write("=%u %s" % (GroupIDMap[x],Line));
 264       Counter = Counter + 1;
 265
 266   # Oops, something unspeakable happened.
 267   except:
 268    Die(File,F,Fdb);
 269    raise;
 270   Done(File,F,Fdb);
 271
 272 # Generate the email forwarding list
 273 def GenForward(l,File):
 274   F = None;
 275   Fdb = None;
 276   try:
 277    OldMask = os.umask(0022);
 278    F = open(File + ".tmp","w",0644);
 279    os.umask(OldMask);
 280
 281    # Fetch all the users
 282    global PasswdAttrs;
 283    if PasswdAttrs == None:
 284       raise "No Users";
 285
 286    # Write out the email address for each user
 287    for x in PasswdAttrs:
 288       if x[1].has_key("emailforward") == 0 or IsInGroup(x) == 0:
 289          continue;
 290
 291       # Do not allow people to try to buffer overflow busted parsers
 292       if len(GetAttr(x,"emailforward")) > 200:
 293          continue;
 294
 295       # Check the forwarding address
 296       if EmailCheck.match(GetAttr(x,"emailforward")) == None:
 297          continue;
 298       Line = "%s: %s" % (GetAttr(x,"uid"),GetAttr(x,"emailforward"));
 299       Line = Sanitize(Line) + "\n";
 300       F.write(Line);
 301
 302   # Oops, something unspeakable happened.
 303   except:
 304    Die(File,F,Fdb);
 305    raise;
 306   Done(File,F,Fdb);
 307
 308 def GenAllForward(l,File):
 309   Fdb = None;
 310   try:
 311    OldMask = os.umask(0022);
 312    Fdb = os.popen("cdbmake %s %s.tmp"%(File,File),"w");
 313    os.umask(OldMask);
 314
 315    # Fetch all the users
 316    global PasswdAttrs;
 317    if PasswdAttrs == None:
 318       raise "No Users";
 319
 320    # Write out the email address for each user
 321    for x in PasswdAttrs:
 322       if x[1].has_key("emailforward") == 0:
 323          continue;
 324
 325       # Do not allow people to try to buffer overflow busted parsers
 326       Forward = GetAttr(x,"emailforward");
 327       if len(Forward) > 200:
 328          continue;
 329
 330       # Check the forwarding address
 331       if EmailCheck.match(Forward) == None:
 332          continue;
 333
 334       User = GetAttr(x,"uid");
 335       Fdb.write("+%d,%d:%s->%s\n"%(len(User),len(Forward),User,Forward));
 336    Fdb.write("\n");
 337   # Oops, something unspeakable happened.
 338   except:
 339     Fdb.close();
 340     raise;
 341   if Fdb.close() != None:
 342     raise "cdbmake gave an error";
 343
 344 # Generate the anon XEarth marker file
 345 def GenMarkers(l,File):
 346   F = None;
 347   Fdb = None;
 348   try:
 349    F = open(File + ".tmp","w");
 350    Fdb = None;
 351
 352    # Fetch all the users
 353    global PasswdAttrs;
 354    if PasswdAttrs == None:
 355       raise "No Users";
 356
 357    # Write out the position for each user
 358    for x in PasswdAttrs:
 359       if x[1].has_key("latitude") == 0 or x[1].has_key("longitude") == 0:
 360          continue;
 361       try:
 362          Line = "%8s %8s \"\""%(DecDegree(GetAttr(x,"latitude"),1),DecDegree(GetAttr(x,"longitude"),1));
 363          Line = Sanitize(Line) + "\n";
 364          F.write(Line);
 365       except:
 366          pass;
 367
 368   # Oops, something unspeakable happened.
 369   except:
 370    Die(File,F,Fdb);
 371    raise;
 372   Done(File,F,Fdb);
 373
 374 # Generate the debian-private subscription list
 375 def GenPrivate(l,File):
 376   F = None;
 377   Fdb = None;
 378   try:
 379    F = open(File + ".tmp","w");
 380    Fdb = None;
 381
 382    # Fetch all the users
 383    global PasswdAttrs;
 384    if PasswdAttrs == None:
 385       raise "No Users";
 386
 387    # Write out the position for each user
 388    for x in PasswdAttrs:
 389       if x[1].has_key("privatesub") == 0:
 390          continue;
 391
 392       # If the account is locked, do not write it
 393       if (string.find(GetAttr(x,"userpassword"),"*LK*")  != -1):
 394          continue;
 395
 396       # If the account has no PGP key, do not write it
 397       if x[1].has_key("keyfingerprint") == 0:
 398          continue;
 399
 400       # Must be in the Debian group (yuk, hard coded for now)
 401       if GetAttr(x,"gidnumber") != "800":
 402          continue;
 403
 404       try:
 405          Line = "%s"%(GetAttr(x,"privatesub"));
 406          Line = Sanitize(Line) + "\n";
 407          F.write(Line);
 408       except:
 409          pass;
 410
 411   # Oops, something unspeakable happened.
 412   except:
 413    Die(File,F,Fdb);
 414    raise;
 415   Done(File,F,Fdb);
 416
 417 # Generate the DNS Zone file
 418 def GenDNS(l,File,BSMTPFile,HomePrefix):
 419   F = None;
 420   FB = None;
 421   try:
 422    F = open(File + ".tmp","w");
 423    FB = open(BSMTPFile + ".tmp","w");
 424
 425    # Fetch all the users
 426    global PasswdAttrs;
 427    if PasswdAttrs == None:
 428       raise "No Users";
 429
 430    # Write out the zone file entry for each user
 431    for x in PasswdAttrs:
 432       if x[1].has_key("dnszoneentry") == 0:
 433          continue;
 434       try:
 435          F.write("; %s\n"%(EmailAddress(x)));
 436          for z in x[1]["dnszoneentry"]:
 437             Split = string.split(string.lower(z));
 438             if string.lower(Split[1]) == 'in':
 439                for y in range(0,len(Split)):
 440                   if Split[y] == "$":
 441                      Split[y] = "\n\t";
 442                Line = string.join(Split," ") + "\n";
 443                F.write(Line);
 444
 445                Host = Split[0] + DNSZone;
 446                if BSMTPCheck.match(Line) != None:
 447                    F.write("; Has BSMTP\n");
 448                    FB.write("%s: user=%s group=Debian file=%s%s/bsmtp/%s\n"%(Host,
 449                                GetAttr(x,"uid"),HomePrefix,GetAttr(x,"uid"),Host));
 450
 451                # Write some identification information
 452                if string.lower(Split[2]) == "a":
 453                   Line = "%s IN TXT \"%s\"\n"%(Split[0],EmailAddress(x));
 454                   for y in x[1]["keyfingerprint"]:
 455                      Line = Line + "%s IN TXT \"PGP %s\"\n"%(Split[0],FormatPGPKey(y));
 456                   F.write(Line);
 457             else:
 458                Line = "; Err %s"%(str(Split));
 459                F.write(Line);
 460
 461          F.write("\n");
 462       except:
 463          F.write("; Errors\n");
 464          pass;
 465
 466   # Oops, something unspeakable happened.
 467   except:
 468    Die(File,F,None);
 469    Die(BSMTPFile,FB,None);
 470    raise;
 471   Done(File,F,None);
 472   Done(BSMTPFile,FB,None);
 473
 474 # Connect to the ldap server
 475 l = ldap.open(LDAPServer);
 476 F = open(PassDir+"/pass-"+pwd.getpwuid(os.getuid())[0],"r");
 477 Pass = string.split(string.strip(F.readline())," ");
 478 F.close();
 479 l.simple_bind_s("uid="+Pass[0]+","+BaseDn,Pass[1]);
 480
 481 # Fetch all the groups
 482 GroupIDMap = {};
 483 Attrs = l.search_s(BaseDn,ldap.SCOPE_ONELEVEL,"gid=*",\
 484                   ["gid","gidnumber"]);
 485
 486 # Generate the GroupMap and GroupIDMap
 487 for x in Attrs:
 488    if x[1].has_key("gidnumber") == 0:
 489       continue;
 490    GroupIDMap[x[1]["gid"][0]] = int(x[1]["gidnumber"][0]);
 491
 492 # Fetch all the users
 493 PasswdAttrs = l.search_s(BaseDn,ldap.SCOPE_ONELEVEL,"uid=*",\
 494                 ["uid","uidnumber","gidnumber","supplementarygid",\
 495                  "gecos","loginshell","userpassword","shadowlastchange",\
 496                  "shadowmin","shadowmax","shadowwarning","shadowinactive",
 497                  "shadowexpire","emailforward","latitude","longitude",\
 498                  "allowedhosts","sshrsaauthkey","dnszoneentry","cn","sn",\
 499                  "keyfingerprint","privatesub","sshdsaauthkey"]);
 500
 501 # Open the control file
 502 if len(sys.argv) == 1:
 503    F = open(GenerateConf,"r");
 504 else:
 505    F = open(sys.argv[1],"r")
 506
 507 # Generate global things
 508 GlobalDir = GenerateDir+"/";
 509 GenSSH2Shadow(l,GlobalDir+"ssh-dsa-shadow");
 510 GenSSHShadow(l,GlobalDir+"ssh-rsa-shadow");
 511 GenAllForward(l,GlobalDir+"mail-forward.cdb");
 512 GenMarkers(l,GlobalDir+"markers");
 513 GenPrivate(l,GlobalDir+"debian-private");
 514
 515 # Compatibility.
 516 GenForward(l,GlobalDir+"forward-alias");
 517
 518 while(1):
 519    Line = F.readline();
 520    if Line == "":
 521       break;
 522    Line = string.strip(Line);
 523    if Line == "":
 524       continue;
 525    if Line[0] == '#':
 526       continue;
 527
 528    Split = string.split(Line," ");
 529    OutDir = GenerateDir + '/' + Split[0] + '/';
 530    try: os.mkdir(OutDir);
 531    except: pass;
 532
 533    # Get the group list and convert any named groups to numerics
 534    GroupList = {};
 535    ExtraList = {};
 536    for I in Split[2:]:
 537       if I[0] == '[':
 538          ExtraList[I] = None;
 539          continue;
 540       GroupList[I] = None;
 541       if GroupIDMap.has_key(I):
 542          GroupList[str(GroupIDMap[I])] = None;
 543
 544    global Allowed,CurrentHost;
 545    Allowed = GroupList;
 546    CurrentHost = Split[0];
 547
 548    sys.stdout.flush();
 549    GenPasswd(l,OutDir+"passwd",Split[1]);
 550    sys.stdout.flush();
 551    GenGroup(l,OutDir+"group");
 552    GenShadow(l,OutDir+"shadow");
 553
 554    # Link in global things
 555    DoLink(GlobalDir,OutDir,"ssh-rsa-shadow");
 556    DoLink(GlobalDir,OutDir,"ssh-rsa-shadow.cdb");
 557    DoLink(GlobalDir,OutDir,"markers");
 558    DoLink(GlobalDir,OutDir,"mail-forward.cdb");
 559
 560    # Compatibility.
 561    DoLink(GlobalDir,OutDir,"forward-alias");
 562
 563    if ExtraList.has_key("[DNS]"):
 564       GenDNS(l,OutDir+"dns-zone",OutDir+"bsmtp",Split[1]);
 565
 566    if ExtraList.has_key("[PRIVATE]"):
 567       DoLink(GlobalDir,OutDir,"debian-private");