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Diff for /loncom/auth/lonacc.pm between versions 1.120 and 1.134

version 1.120, 2008/11/20 14:37:52 version 1.134, 2010/03/29 13:31:01
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;
   
Line 156  sub get_posted_cgi { Line 222  sub get_posted_cgi {
     $r->headers_in->unset('Content-length');      $r->headers_in->unset('Content-length');
 }  }
   
 #  =pod
 # Perform size checks for file uploads to essayresponse items in course context.  
 #  =item upload_size_allowed()
 # Add form.HWFILESIZE.$part_$id to %env with file size (MB)  
 # If file exceeds maximum allowed size, add form.HWFILETOOBIG.$part_$id to %env.   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 {  sub upload_size_allowed {
     my ($name,$size,$fname) = @_;      my ($name,$size,$fname) = @_;
     if ($name =~ /^HWFILE(\w+)$/) {      if ($name =~ /^HWFILE(\w+)$/) {
         my $ident = $1;          my $ident = $1;
         my $item = 'HWFILESIZE'.$ident;          my $item = 'HWFILESIZE'.$ident;
         &Apache::loncommon::add_to_env("form.$item",$size);          my $savesize = sprintf("%.6f",$size);
           &Apache::loncommon::add_to_env("form.$item",$savesize);
         my $maxsize= &Apache::lonnet::EXT("resource.$ident.maxfilesize");          my $maxsize= &Apache::lonnet::EXT("resource.$ident.maxfilesize");
         if (!$maxsize) {          if (!$maxsize) {
             $maxsize = 100.0;              $maxsize = 10.0; # FIXME This should become a domain configuration.
         }          }
         if ($size > $maxsize) {          if ($size > $maxsize) {
             my $warn = 'HWFILETOOBIG'.$ident;              my $warn = 'HWFILETOOBIG'.$ident;
Line 182  sub upload_size_allowed { Line 253  sub upload_size_allowed {
     return 'ok';      return 'ok';
 }  }
   
 # 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 sso_login()
 # returns OK if it was a SSO and user was handled  
 #         undef if not SSO or no means to hanle the user   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 201  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) {
           my @items = ('role','symb');
           &Apache::loncommon::get_unprocessed_cgi($query,\@items);
           foreach my $item (@items) {
               if (defined($env{'form.'.$item})) {
                   $form{$item} = $env{'form.'.$item};
               }
           }
       }
   
     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 225  sub sso_login { Line 314  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 ($r->dir_config("ssodirecturl") == 1) {              if ($r->dir_config("ssodirecturl") == 1) {
                 $info{'origurl'} = $r->uri;                  $info{'origurl'} = $r->uri;
             }              }
Line 275  sub handler { Line 369  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);
Line 314  sub handler { Line 411  sub handler {
  }   }
  $env{'request.filename'} = $r->filename;   $env{'request.filename'} = $r->filename;
  $env{'request.noversionuri'} = &Apache::lonnet::deversion($requrl);   $env{'request.noversionuri'} = &Apache::lonnet::deversion($requrl);
           if ($requrl =~ m{^/adm/wrapper/ext/}) {
               my $query = $r->args;
               if ($query) {
                   my $preserved;
                   foreach my $pair (split(/&/,$query)) {
                       my ($name, $value) = split(/=/,$pair);
                       unless ($name eq 'symb') {
                           $preserved .= $pair.'&';
                       }
                   }
                   $preserved =~ s/\&$//;
                   if ($preserved) {
                       $env{'request.external.querystring'} = $preserved;
                   }
               }
           }
 # -------------------------------------------------------- Load POST parameters  # -------------------------------------------------------- Load POST parameters
   
  &Apache::lonacc::get_posted_cgi($r);   &Apache::lonacc::get_posted_cgi($r);
Line 336  sub handler { Line 449  sub handler {
                 return OK;                  return OK;
             }              }
     if (($access ne '2') && ($access ne 'F')) {      if (($access ne '2') && ($access ne 'F')) {
  $env{'user.error.msg'}="$requrl:bre:1:1:Access Denied";                  if ($requrl =~ m{^/res/}) {
  return HTTP_NOT_ACCEPTABLE;                       $access = &Apache::lonnet::allowed('bro',$requrl);
                       if ($access ne 'F') {
                           if ($requrl eq '/res/lib/templates/simpleproblem.problem/smpedit') {
                               $access = &Apache::lonnet::allowed('bre','/res/lib/templates/simpleproblem.problem');
                               if ($access ne 'F') {
                                   $env{'user.error.msg'}="$requrl:bre:1:1:Access Denied";
                                   return HTTP_NOT_ACCEPTABLE;
                               }
                           } else {
                               $env{'user.error.msg'}="$requrl:bre:1:1:Access Denied";
                               return HTTP_NOT_ACCEPTABLE;
                           }
                       }
                   } else {
       $env{'user.error.msg'}="$requrl:bre:1:1:Access Denied";
       return HTTP_NOT_ACCEPTABLE;
                   }
     }      }
  }   }
  if ($requrl =~ m|^/prtspool/|) {   if ($requrl =~ m|^/prtspool/|) {
Line 360  sub handler { Line 489  sub handler {
     $env{'user.domain'} eq 'public' &&      $env{'user.domain'} eq 'public' &&
     $requrl !~ m{^/+(res|public|uploaded)/} &&      $requrl !~ m{^/+(res|public|uploaded)/} &&
     $requrl !~ m{^/adm/[^/]+/[^/]+/aboutme/portfolio$ }x &&      $requrl !~ m{^/adm/[^/]+/[^/]+/aboutme/portfolio$ }x &&
           $requrl !~ m{^/adm/blockingstatus/.*$} &&
     $requrl !~ m{^/+adm/(help|logout|restrictedaccess|randomlabel\.png)}) {      $requrl !~ m{^/+adm/(help|logout|restrictedaccess|randomlabel\.png)}) {
     $env{'request.querystring'}=$r->args;      $env{'request.querystring'}=$r->args;
     $env{'request.firsturl'}=$requrl;      $env{'request.firsturl'}=$requrl;
Line 369  sub handler { Line 499  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) ||   ($requrl=~/^\/adm\/.*\/(aboutme|smppg|bulletinboard)(\?|$ )/x) ||
  ($requrl=~/^\/adm\/wrapper\//) ||   ($requrl=~/^\/adm\/wrapper\//) ||
  ($requrl=~m|^/adm/coursedocs/showdoc/|) ||   ($requrl=~m|^/adm/coursedocs/showdoc/|) ||
  ($requrl=~m|\.problem/smpedit$|) ||   ($requrl=~m|\.problem/smpedit$|) ||
  ($requrl=~/^\/public\/.*\/syllabus$/)) {   ($requrl=~/^\/public\/.*\/syllabus$/) ||
                   ($requrl=~/^\/adm\/(viewclasslist|navmaps)$/) ||
                   ($requrl=~/^\/adm\/.*\/aboutme\/portfolio(\?|$)/)) {
 # ------------------------------------- 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($query,['symb']);
Line 390  sub handler { Line 522  sub handler {
   'last_known' =>[$murl,$mid]);    'last_known' =>[$murl,$mid]);
     } elsif ((&Apache::lonnet::symbverify($symb,$requrl)) ||      } elsif ((&Apache::lonnet::symbverify($symb,$requrl)) ||
      (($requrl=~m|(.*)/smpedit$|) &&       (($requrl=~m|(.*)/smpedit$|) &&
       &Apache::lonnet::symbverify($symb,$1))) {        &Apache::lonnet::symbverify($symb,$1)) ||
                                (($requrl=~m|(.*/aboutme)/portfolio$|) &&
                                 &Apache::lonnet::symbverify($symb,$1))) {
  my ($map,$mid,$murl)=&Apache::lonnet::decode_symb($symb);   my ($map,$mid,$murl)=&Apache::lonnet::decode_symb($symb);
  &Apache::lonnet::symblist($map,$murl => [$murl,$mid],   &Apache::lonnet::symblist($map,$murl => [$murl,$mid],
   'last_known' =>[$murl,$mid]);    'last_known' =>[$murl,$mid]);
Line 402  sub handler { Line 536  sub handler {
  return HTTP_NOT_ACCEPTABLE;    return HTTP_NOT_ACCEPTABLE; 
     }      }
  } else {   } else {
                       if ($requrl=~m{^(/adm/.*/aboutme)/portfolio$}) {
                           $requrl = $1;
                       }
     $symb=&Apache::lonnet::symbread($requrl);      $symb=&Apache::lonnet::symbread($requrl);
     if (&Apache::lonnet::is_on_map($requrl) && $symb &&      if (&Apache::lonnet::is_on_map($requrl) && $symb &&
  !&Apache::lonnet::symbverify($symb,$requrl)) {   !&Apache::lonnet::symbverify($symb,$requrl)) {
Line 423  sub handler { Line 560  sub handler {
 # ------------------------------------------------------- This is other content  # ------------------------------------------------------- This is other content
  &Apache::lonnet::courseacclog($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 461  sub handler { Line 610  sub handler {
 1;  1;
 __END__  __END__
   
   =pod
 =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  =back
   
 =cut  
   
   =cut
   
Removed from v.1.120  
changed lines
  Added in v.1.134

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