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Diff for /loncom/auth/lonacc.pm between versions 1.111 and 1.126

version 1.111, 2007/10/02 01:09:59 version 1.126, 2009/07/23 17:40:29
Line 27 Line 27
 #  #
 ###  ###
   
   =head1 NAME
   
   Apache::lonacc - Cookie Based Access Handler
   
   =head1 SYNOPSIS
   
   Invoked (for various locations) by /etc/httpd/conf/srm.conf:
   
    PerlAccessHandler       Apache::lonacc
   
   =head1 INTRODUCTION
   
   This module enables cookie based authentication and is used
   to control access for many different LON-CAPA URIs.
   
   Whenever the client sends the cookie back to the server, 
   this cookie is handled by either lonacc.pm or loncacc.pm
   (see srm.conf for what is invoked when).  If
   the cookie is missing or invalid, the user is re-challenged
   for login information.
   
   This is part of the LearningOnline Network with CAPA project
   described at http://www.lon-capa.org.
   
   =head1 HANDLER SUBROUTINE
   
   This routine is called by Apache and mod_perl.
   
   =over 4
   
   =item *
   
   transfer profile into environment
   
   =item *
   
   load POST parameters
   
   =item *
   
   check access
   
   =item *
   
   if allowed, get symb, log, generate course statistics if applicable
   
   =item *
   
   otherwise return error
   
   =item *
   
   see if public resource
   
   =item *
   
   store attempted access
   
   =back
   
   =head1 NOTABLE SUBROUTINES
   
   =over
   
   =cut
   
   
 package Apache::lonacc;  package Apache::lonacc;
   
 use strict;  use strict;
Line 57  sub goodbye { Line 124  sub goodbye {
 ###############################################  ###############################################
   
 sub get_posted_cgi {  sub get_posted_cgi {
     my ($r) = @_;      my ($r,$fields) = @_;
   
     my $buffer;      my $buffer;
     if ($r->header_in('Content-length')) {      if ($r->header_in('Content-length')) {
  $r->read($buffer,$r->header_in('Content-length'),0);   $r->read($buffer,$r->header_in('Content-length'),0);
     }      }
     unless ($buffer=~/^(\-+\w+)\s+Content\-Disposition\:\s*form\-data/si) {      my $content_type = $r->header_in('Content-type');
       if ($content_type !~ m{^multipart/form-data}) {
  my @pairs=split(/&/,$buffer);   my @pairs=split(/&/,$buffer);
  my $pair;   my $pair;
  foreach $pair (@pairs) {   foreach $pair (@pairs) {
Line 72  sub get_posted_cgi { Line 140  sub get_posted_cgi {
     $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;      $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
     $name  =~ tr/+/ /;      $name  =~ tr/+/ /;
     $name  =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;      $name  =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
               if (ref($fields) eq 'ARRAY') {
                   next if (!grep(/^\Q$name\E$/,@{$fields}));
               }
     &Apache::loncommon::add_to_env("form.$name",$value);      &Apache::loncommon::add_to_env("form.$name",$value);
  }   }
     } else {      } else {
  my $contentsep=$1;   my ($contentsep) = ($content_type =~ /boundary=\"?([^\";,]+)\"?/);
  my @lines = split (/\n/,$buffer);   my @lines = split (/\n/,$buffer);
  my $name='';   my $name='';
  my $value='';   my $value='';
Line 83  sub get_posted_cgi { Line 154  sub get_posted_cgi {
  my $fmime='';   my $fmime='';
  my $i;   my $i;
  for ($i=0;$i<=$#lines;$i++) {   for ($i=0;$i<=$#lines;$i++) {
     if ($lines[$i]=~/^$contentsep/) {      if ($lines[$i]=~/^--\Q$contentsep\E/) {
  if ($name) {   if ($name) {
     chomp($value);      chomp($value);
     if ($fname) {                      if (ref($fields) eq 'ARRAY') {
  $env{"form.$name.filename"}=$fname;                          next if (!grep(/^\Q$name\E$/,@{$fields}));
  $env{"form.$name.mimetype"}=$fmime;                      }
     } else {                      if ($fname) {
  $value=~s/\s+$//s;                          if ($env{'form.symb'} ne '') {
     }                              my $size = (length($value))/(1024.0 * 1024.0);
     &Apache::loncommon::add_to_env("form.$name",$value);                              if (&upload_size_allowed($name,$size,$fname) eq 'ok') {
                                   $env{"form.$name.filename"}=$fname;
                                   $env{"form.$name.mimetype"}=$fmime;
                                   &Apache::loncommon::add_to_env("form.$name",$value);
                               }
                           } else {
                               $env{"form.$name.filename"}=$fname;
                               $env{"form.$name.mimetype"}=$fmime;
                               &Apache::loncommon::add_to_env("form.$name",$value);
                           }
                       } else {
                           $value=~s/\s+$//s;
                           &Apache::loncommon::add_to_env("form.$name",$value);
                       }
  }   }
  if ($i<$#lines) {   if ($i<$#lines) {
     $i++;      $i++;
Line 138  sub get_posted_cgi { Line 222  sub get_posted_cgi {
     $r->headers_in->unset('Content-length');      $r->headers_in->unset('Content-length');
 }  }
   
 # handle the case of the single sign on user, at this point $r->user   =pod
 # will be set and valid now need to find the loncapa user info and possibly  
 # balance them  =item upload_size_allowed()
 # returns OK if it was a SSO and user was handled  
 #         undef if not SSO or no means to hanle the user   Perform size checks for file uploads to essayresponse items in course context.
   
    Add form.HWFILESIZE.$part_$id to %env with file size (MB)
    If file exceeds maximum allowed size, add form.HWFILETOOBIG.$part_$id to %env.
   
   =cut
    
   sub upload_size_allowed {
       my ($name,$size,$fname) = @_;
       if ($name =~ /^HWFILE(\w+)$/) {
           my $ident = $1;
           my $item = 'HWFILESIZE'.$ident;
           my $savesize = sprintf("%.6f",$size);
           &Apache::loncommon::add_to_env("form.$item",$savesize);
           my $maxsize= &Apache::lonnet::EXT("resource.$ident.maxfilesize");
           if (!$maxsize) {
               $maxsize = 10.0; # FIXME This should become a domain configuration.
           }
           if ($size > $maxsize) {
               my $warn = 'HWFILETOOBIG'.$ident;
               &Apache::loncommon::add_to_env("form.$warn",$fname);
               return;
           }
       }
       return 'ok';
   }
   
   =pod
   
   =item sso_login()
   
    handle the case of the single sign on user, at this point $r->user 
    will be set and valid now need to find the loncapa user info and possibly
    balance them
    returns OK if it was a SSO and user was handled
           undef if not SSO or no means to hanle the user
           
   =cut
   
 sub sso_login {  sub sso_login {
     my ($r,$handle) = @_;      my ($r,$handle) = @_;
   
Line 156  sub sso_login { Line 278  sub sso_login {
   
     my ($user) = ($r->user =~ m/([a-zA-Z0-9_\-@.]*)/);      my ($user) = ($r->user =~ m/([a-zA-Z0-9_\-@.]*)/);
   
       my $query = $r->args;
       my %form;
       if ($query) {
           foreach my $pair (split(/&/,$query)) {
               my ($name, $value) = split(/=/,$pair);
               $name = &unescape($name);
               if (($name eq 'role') || ($name eq 'symb')) {
                   $value =~ tr/+/ /;
                   $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
                   $form{$name} = $value;
               }
           }
       }
   
     my $domain = $r->dir_config('lonDefDomain');      my $domain = $r->dir_config('lonDefDomain');
     my $home=&Apache::lonnet::homeserver($user,$domain);      my $home=&Apache::lonnet::homeserver($user,$domain);
     if ($home !~ /(con_lost|no_host|no_such_host)/) {      if ($home !~ /(con_lost|no_host|no_such_host)/) {
Line 163  sub sso_login { Line 299  sub sso_login {
  if ($r->dir_config("lonBalancer") eq 'yes') {   if ($r->dir_config("lonBalancer") eq 'yes') {
     # login but immeaditly go to switch server to find us a new       # login but immeaditly go to switch server to find us a new 
     # machine      # machine
     &Apache::lonauth::success($r,$user,$domain,$home,'noredirect');      &Apache::lonauth::success($r,$user,$domain,$home,'noredirect','',\%form);
             $env{'request.sso.login'} = 1;              $env{'request.sso.login'} = 1;
             if (defined($r->dir_config("lonSSOReloginServer"))) {              if (defined($r->dir_config("lonSSOReloginServer"))) {
                 $env{'request.sso.reloginserver'} =                  $env{'request.sso.reloginserver'} =
Line 180  sub sso_login { Line 316  sub sso_login {
       'server'    => $r->dir_config('lonHostID'),        'server'    => $r->dir_config('lonHostID'),
       'sso.login' => 1        'sso.login' => 1
       );        );
               foreach my $item ('role','symb') {
                   if (exists($form{$item})) {
                       $info{$item} = $form{$item};
                   }
               }
               if ($r->dir_config("ssodirecturl") == 1) {
                   $info{'origurl'} = $r->uri;
               }
             if (defined($r->dir_config("lonSSOReloginServer"))) {              if (defined($r->dir_config("lonSSOReloginServer"))) {
                 $info{'sso.reloginserver'} =                   $info{'sso.reloginserver'} = 
                     $r->dir_config('lonSSOReloginServer');                       $r->dir_config('lonSSOReloginServer'); 
Line 196  sub sso_login { Line 340  sub sso_login {
  &Apache::lonnet::logthis(" SSO authorized unknown user $user ");   &Apache::lonnet::logthis(" SSO authorized unknown user $user ");
         $r->subprocess_env->set('SSOUserUnknown' => $user);          $r->subprocess_env->set('SSOUserUnknown' => $user);
         $r->subprocess_env->set('SSOUserDomain' => $domain);          $r->subprocess_env->set('SSOUserDomain' => $domain);
  $r->internal_redirect($r->dir_config('lonSSOUserUnknownRedirect'));          my @cancreate;
           my %domconfig =
               &Apache::lonnet::get_dom('configuration',['usercreation'],$domain);
           if (ref($domconfig{'usercreation'}) eq 'HASH') {
               if (ref($domconfig{'usercreation'}{'cancreate'}) eq 'HASH') {
                   if (ref($domconfig{'usercreation'}{'cancreate'}{'selfcreate'}) eq 'ARRAY') {
                       @cancreate = @{$domconfig{'usercreation'}{'cancreate'}{'selfcreate'}};
                   } elsif (($domconfig{'usercreation'}{'cancreate'}{'selfcreate'} ne 'none') && 
                            ($domconfig{'usercreation'}{'cancreate'}{'selfcreate'} ne '')) {
                       @cancreate = ($domconfig{'usercreation'}{'cancreate'}{'selfcreate'});
                   }
               }
           }
           if (grep(/^sso$/,@cancreate)) {
               $r->internal_redirect('/adm/createaccount');
           } else {
       $r->internal_redirect($r->dir_config('lonSSOUserUnknownRedirect'));
           }
  $r->set_handlers('PerlHandler'=> undef);   $r->set_handlers('PerlHandler'=> undef);
  return OK;   return OK;
     }      }
Line 210  sub handler { Line 371  sub handler {
         return OK;          return OK;
     }      }
   
           if ($requrl =~ m{^/res/adm/pages/[^/]+\.(gif|png)$}) {
           return OK;
       }
   
     my $handle = &Apache::lonnet::check_for_valid_session($r);      my $handle = &Apache::lonnet::check_for_valid_session($r);
   
     my $result = &sso_login($r,$handle);      my $result = &sso_login($r,$handle);
     if (defined($result)) {      if (defined($result)) {
  return $result   return $result;
     }      }
   
   
Line 304  sub handler { Line 468  sub handler {
  if ($env{'request.course.id'}) {   if ($env{'request.course.id'}) {
     &Apache::lonnet::countacc($requrl);      &Apache::lonnet::countacc($requrl);
     $requrl=~/\.(\w+)$/;      $requrl=~/\.(\w+)$/;
               my $query=$r->args;
     if ((&Apache::loncommon::fileembstyle($1) eq 'ssi') ||      if ((&Apache::loncommon::fileembstyle($1) eq 'ssi') ||
  ($requrl=~/^\/adm\/.*\/(aboutme|navmaps|smppg|bulletinboard)(\?|$ )/x) ||   ($requrl=~/^\/adm\/.*\/(aboutme|navmaps|smppg|bulletinboard)(\?|$ )/x) ||
  ($requrl=~/^\/adm\/wrapper\//) ||   ($requrl=~/^\/adm\/wrapper\//) ||
Line 311  sub handler { Line 476  sub handler {
  ($requrl=~m|\.problem/smpedit$|) ||   ($requrl=~m|\.problem/smpedit$|) ||
  ($requrl=~/^\/public\/.*\/syllabus$/)) {   ($requrl=~/^\/public\/.*\/syllabus$/)) {
 # ------------------------------------- This is serious stuff, get symb and log  # ------------------------------------- This is serious stuff, get symb and log
  my $query=$r->args;  
  my $symb;   my $symb;
  if ($query) {   if ($query) {
     &Apache::loncommon::get_unprocessed_cgi($query,['symb']);      &Apache::loncommon::get_unprocessed_cgi($query,['symb']);
Line 358  sub handler { Line 522  sub handler {
 # ------------------------------------------------------- This is other content  # ------------------------------------------------------- This is other content
  &Apache::lonnet::courseacclog($requrl);       &Apache::lonnet::courseacclog($requrl);    
     }      }
               my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};;
               my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};;
               if ($requrl =~ m{^/+uploaded/\Q$cdom\E/\Q$cnum\E/docs/.+\.html?$}) {
                   if (&Apache::lonnet::allowed('mdc',$env{'request.course.id'})) {
                       if ($query) {
                           &Apache::loncommon::get_unprocessed_cgi($query,['forceedit']);
                           if ($env{'form.forceedit'}) {
                               $env{'request.state'} = 'edit';
                           }
                       }
                   }
               }
  }   }
  return OK;   return OK;
     }      }
Line 396  sub handler { Line 572  sub handler {
 1;  1;
 __END__  __END__
   
 =head1 NAME  =pod
   
 Apache::lonacc - Cookie Based Access Handler  
   
 =head1 SYNOPSIS  
   
 Invoked (for various locations) by /etc/httpd/conf/srm.conf:  
   
  PerlAccessHandler       Apache::lonacc  
   
 =head1 INTRODUCTION  
   
 This module enables cookie based authentication and is used  
 to control access for many different LON-CAPA URIs.  
   
 Whenever the client sends the cookie back to the server,   
 this cookie is handled by either lonacc.pm or loncacc.pm  
 (see srm.conf for what is invoked when).  If  
 the cookie is missing or invalid, the user is re-challenged  
 for login information.  
   
 This is part of the LearningOnline Network with CAPA project  
 described at http://www.lon-capa.org.  
   
 =head1 HANDLER SUBROUTINE  
   
 This routine is called by Apache and mod_perl.  
   
 =over 4  
   
 =item *  
   
 transfer profile into environment  
   
 =item *  
   
 load POST parameters  
   
 =item *  
   
 check access  
   
 =item *  
   
 if allowed, get symb, log, generate course statistics if applicable  
   
 =item *  
   
 otherwise return error  
   
 =item *  
   
 see if public resource  
   
 =item *  
   
 store attempted access  
   
 =back  =back
   
 =cut  =cut
   
Removed from v.1.111  
changed lines
  Added in v.1.126

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