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Diff for /loncom/lcpasswd between versions 1.17 and 1.22

version 1.17, 2002/09/16 13:27:40 version 1.22, 2010/10/12 10:33:47
Line 1 Line 1
 #!/usr/bin/perl  #!/usr/bin/perl
   
 # The Learning Online Network with CAPA  # The Learning Online Network with CAPA
 #  #
 # lcpasswd - LON-CAPA setuid script to synchronously change all  # lcpasswd - LON-CAPA setuid script to synchronously change all
 #            filesystem-related passwords (samba, unix, etc)  #            filesystem-related passwords (samba, unix, etc)
 #  #
 # YEAR=2000  
 # 10/27,10/28,10/29,10/30 Scott Harrison  
 #  
 # YEAR=2001  
 # 10/22,10/23,11/13,11/15 Scott Harrison  
 #   
 # YEAR=2002  # YEAR=2002
 # 02/19 Matthew Hall  # 02/19 Matthew Hall
 #  #
Line 95  delete @ENV{qw(IFS CDPATH ENV BASH_ENV)} Line 88  delete @ENV{qw(IFS CDPATH ENV BASH_ENV)}
 # Do not print error messages  # Do not print error messages
 my $noprint=1;  my $noprint=1;
   
   print "In lcpasswd" unless $noprint;
   
 # ----------------------------- Make sure this process is running from user=www  # ----------------------------- Make sure this process is running from user=www
 my $wwwid=getpwnam('www');  my $wwwid=getpwnam('www');
 &disable_root_capability;  
 if ($wwwid!=$>) {  if ($wwwid!=$<) {
     print("User ID mismatch.  This program must be run as user 'www'\n")      print("User ID mismatch.  This program must be run as user 'www'\n")
  unless $noprint;   unless $noprint;
     exit 1;      exit 1;
 }  }
   
 # ----------------------------------- Start running script with www permissions  # ----------------------------------- Start running script with www permissions
 &disable_root_capability;  
   
 # --------------------------- Handle case of another lcpasswd process (locking)  # --------------------------- Handle case of another lcpasswd process (locking)
 unless (&try_to_lock('/tmp/lock_lcpasswd')) {  unless (&try_to_lock('/tmp/lock_lcpasswd')) {
Line 155  unless(getpwnam($safeusername)) { Line 150  unless(getpwnam($safeusername)) {
     unlink('/tmp/lock_lcpasswd');      unlink('/tmp/lock_lcpasswd');
     exit 5;      exit 5;
 }  }
   
 &enable_root_capability;  &enable_root_capability;
 ($>,$<)=(0,0);  ($>,$<)=(0,0);
 print "Now root, -invoking pwchange with $safeusername $password1"  
   print "Now $> , $< , -invoking pwchange with $safeusername $password1"
     unless $noprint;      unless $noprint;
 open OUT,"|pwchange $safeusername";  open OUT,"|pwchange $safeusername";
 print OUT $password1;  print OUT $password1;
 print OUT "\n";  print OUT "\n";
 close OUT;  close OUT;
 ($>,$<)=(0,500);  ($>,$<)=(0,$wwwid);
   
 print "pwchange done, back to uid 500" unless $noprint;  print "pwchange done, back to uid $wwwid" unless $noprint;
   
 if ($?) {  if ($?) {
     exit 8;      exit 8;
Line 178  if (-e '/usr/bin/smbpasswd') { Line 173  if (-e '/usr/bin/smbpasswd') {
     ($>,$<)=(0,0); # fool smbpasswd here to think this is not a setuid      ($>,$<)=(0,0); # fool smbpasswd here to think this is not a setuid
                    # environment                     # environment
   
 #   If the -a swithc is put on the smbpasswd  #   If the -a switch is put on the smbpasswd
 # command line, either a new entry will be created or the old one  # command line, either a new entry will be created or the old one
 # will be used.   # will be used. 
 # Therefore the old strategy of looking for and adding a dummy entry is   # Therefore the old strategy of looking for and adding a dummy entry is 
Line 195  if (-e '/usr/bin/smbpasswd') { Line 190  if (-e '/usr/bin/smbpasswd') {
     print "smbpasswd done" unless $noprint;      print "smbpasswd done" unless $noprint;
 }  }
   
 &disable_root_capability;  
 unlink('/tmp/lock_lcpasswd');  unlink('/tmp/lock_lcpasswd');
 exit 0;  exit 0;
   
 # ---------------------------------------------- have setuid script run as root  # ---------------------------------------------- have setuid script run as root
 sub enable_root_capability {  sub enable_root_capability {
     if ($wwwid==$>) {      if ($wwwid==$>) {
  ($<,$>)=($>,$<);   ($<,$>)=($>,0);
  ($(,$))=($),$();   ($(,$))=($),0);
     }      }
     else {      else {
  # root capability is already enabled   # root capability is already enabled
Line 227  sub try_to_lock { Line 222  sub try_to_lock {
     my ($lockfile)=@_;      my ($lockfile)=@_;
     my $currentpid;      my $currentpid;
     my $lastpid;      my $lastpid;
     # Do not manipulate lock file as root  
     if ($>==0) {  
  return 0;  
     }  
     # Try to generate lock file.      # Try to generate lock file.
     # Wait 3 seconds.  If same process id is in      # Wait 3 seconds.  If same process id is in
     # lock file, then assume lock file is stale, and      # lock file, then assume lock file is stale, and
Removed from v.1.17  
changed lines
  Added in v.1.22

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