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Diff for /loncom/LONCAPA.pm between versions 1.15 and 1.28

version 1.15, 2006/11/27 16:34:38 version 1.28, 2009/05/13 14:01:10
Line 27 Line 27
 #  #
 ###  ###
   
   
   
 package LONCAPA;  package LONCAPA;
   
 use strict;  use strict;
Line 41  my $loncapa_max_wait_time = 13; Line 43  my $loncapa_max_wait_time = 13;
   
 use vars qw($match_domain   $match_not_domain  use vars qw($match_domain   $match_not_domain
     $match_username $match_not_username      $match_username $match_not_username
       $match_courseid $match_not_courseid
       $match_name
               $match_lonid
     $match_handle   $match_not_handle);      $match_handle   $match_not_handle);
   
 require Exporter;  require Exporter;
Line 50  our @EXPORT = qw(&add_get_param    &esca Line 55  our @EXPORT = qw(&add_get_param    &esca
  &untie_user_hash  &propath);   &untie_user_hash  &propath);
 our @EXPORT_OK = qw($match_domain   $match_not_domain  our @EXPORT_OK = qw($match_domain   $match_not_domain
     $match_username $match_not_username      $match_username $match_not_username
       $match_courseid $match_not_courseid
       $match_name
       $match_lonid
     $match_handle   $match_not_handle);      $match_handle   $match_not_handle);
 our %EXPORT_TAGS = ( 'match' =>[qw($match_domain   $match_not_domain  our %EXPORT_TAGS = ( 'match' =>[qw($match_domain   $match_not_domain
    $match_username $match_not_username     $match_username $match_not_username
      $match_courseid $match_not_courseid
      $match_name
      $match_lonid
    $match_handle   $match_not_handle)],);     $match_handle   $match_not_handle)],);
 my %perlvar;  my %perlvar;
   
   
   
 # Inputs are a url, and a hash ref of  
 # form name => value pairs  
 # takes care of properly adding the form name elements and values to the   
 # the url doing proper escaping of the values and joining with ? or & as   
 # needed  
   
 sub add_get_param {  sub add_get_param {
     my ($url,$form_data) = @_;      my ($url,$form_data) = @_;
     my $needs_question_mark = ($url !~ /\?/);      my $needs_question_mark = ($url !~ /\?/);
Line 104  sub clean_domain { Line 108  sub clean_domain {
     return $domain;      return $domain;
 }  }
   
 sub split_courseid {  $match_username     = $LONCAPA::username_re     = qr{\w[\w\-.@]+};
     my ($courseid) = @_;  $match_not_username = $LONCAPA::not_username_re = qr{[^\w\-.@]+};
     my  ($domain,$coursenum) =   
  ($courseid=~m{^/($match_domain)/($match_username)});  
     return ($domain,$coursenum);  
 }  
   
 $match_username     = $LONCAPA::username_re     = qr{[\w\-.]+};  
 $match_not_username = $LONCAPA::not_username_re = qr{[^\w\-.]+};  
 sub clean_username {  sub clean_username {
     my ($username) = @_;      my ($username) = @_;
       $username =~ s/^\W+//;
     $username =~ s/$match_not_username//g;      $username =~ s/$match_not_username//g;
     return $username;      return $username;
 }  }
   
 $match_handle     = $LONCAPA::handle_re     = qr{[\w\-.]+};  
 $match_not_handle = $LONCAPA::not_handle_re = qr{[^\w\-.]+};  $match_courseid     = $LONCAPA::courseid_re     = qr{\d[\w\-.]+};
   $match_not_courseid = $LONCAPA::not_courseid_re = qr{[^\w\-.]+};
   sub clean_courseid {
       my ($courseid) = @_;
       $courseid =~ s/^\D+//;
       $courseid =~ s/$match_not_courseid//g;
       return $courseid;
   }
   
   $match_name         = $LONCAPA::name_re = qr{$match_username|$match_courseid};
   sub clean_name {
       my ($name) = @_;
       $name =~ s/$match_not_username//g;
       return $name;
   }
   
   $match_lonid     = $LONCAPA::lonid_re     = qr{[\w\-.]+};
   
   sub split_courseid {
       my ($courseid) = @_;
       my  ($domain,$coursenum) = 
    ($courseid=~m{^/($match_domain)/($match_courseid)});
       return ($domain,$coursenum);
   }
   
   $match_handle     = $LONCAPA::handle_re     = qr{[\w\-.@]+};
   $match_not_handle = $LONCAPA::not_handle_re = qr{[^\w\-.@]+};
 sub clean_handle {  sub clean_handle {
     my ($handle) = @_;      my ($handle) = @_;
     $handle =~ s/$match_not_handle//g;      $handle =~ s/$match_not_handle//g;
Line 132  sub clean_handle { Line 156  sub clean_handle {
 sub propath {  sub propath {
     my ($udom,$uname)=@_;      my ($udom,$uname)=@_;
     $udom = &clean_domain($udom);      $udom = &clean_domain($udom);
     $uname= &clean_username($uname);      $uname= &clean_name($uname);
     my $subdir=$uname.'__';      my $subdir=$uname.'__';
     $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;      $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
     my $proname="$perlvar{'lonUsersDir'}/$udom/$subdir/$uname";      my $proname="$perlvar{'lonUsersDir'}/$udom/$subdir/$uname";
Line 140  sub propath { Line 164  sub propath {
 }   } 
   
   
 #---------------------------------------------------------------  
 #  
 # Manipulation of hash based databases (factoring out common code  
 # for later use as we refactor.  
 #  
 #  Ties a domain level resource file to a hash.  
 #  If requested a history entry is created in the associated hist file.  
 #  
 #  Parameters:  
 #     domain    - Name of the domain in which the resource file lives.  
 #     namespace - Name of the hash within that domain.  
 #     how       - How to tie the hash (e.g. GDBM_WRCREAT()).  
 #     loghead   - Optional parameter, if present a log entry is created  
 #                 in the associated history file and this is the first part  
 #                  of that entry.  
 #     logtail   - Goes along with loghead,  The actual logentry is of the  
 #                 form $loghead:<timestamp>:logtail.  
 # Returns:  
 #    Reference to a hash bound to the db file or alternatively undef  
 #    if the tie failed.  
 #  
 sub tie_domain_hash {  sub tie_domain_hash {
     my ($domain,$namespace,$how,$loghead,$logtail) = @_;      my ($domain,$namespace,$how,$loghead,$logtail) = @_;
           
Line 179  sub tie_domain_hash { Line 182  sub tie_domain_hash {
 sub untie_domain_hash {  sub untie_domain_hash {
     return &_locking_hash_untie(@_);      return &_locking_hash_untie(@_);
 }  }
 #  
 #   Ties a user's resource file to a hash.    
 #   If necessary, an appropriate history  
 #   log file entry is made as well.  
 #   This sub factors out common code from the subs that manipulate  
 #   the various gdbm files that keep keyword value pairs.  
 # Parameters:  
 #   domain       - Name of the domain the user is in.  
 #   user         - Name of the 'current user'.  
 #   namespace    - Namespace representing the file to tie.  
 #   how          - What the tie is done to (e.g. GDBM_WRCREAT().  
 #   loghead      - Optional first part of log entry if there may be a  
 #                  history file.  
 #   what         - Optional tail of log entry if there may be a history  
 #                  file.  
 # Returns:  
 #   hash to which the database is tied.  It's up to the caller to untie.  
 #   undef if the has could not be tied.  
 #  
 sub tie_user_hash {  sub tie_user_hash {
     my ($domain,$user,$namespace,$how,$loghead,$what) = @_;      my ($domain,$user,$namespace,$how,$loghead,$what) = @_;
   
Line 212  sub untie_user_hash { Line 198  sub untie_user_hash {
     return &_locking_hash_untie(@_);      return &_locking_hash_untie(@_);
 }  }
   
 # routines if you just have a filename  
 # return tied hashref or undef  
   
 sub locking_hash_tie {  sub locking_hash_tie {
     my ($filename,$how)=@_;      my ($filename,$how)=@_;
Line 391  __END__ Line 375  __END__
   
 =head1 NAME  =head1 NAME
   
   Apache::LONCAPA
   
 LONCAPA - Basic routines  LONCAPA - Basic routines
   
 =head1 SYNOPSIS  =head1 SYNOPSIS
Line 399  Generally useful routines Line 385  Generally useful routines
   
 =head1 EXPORTED SUBROUTINES  =head1 EXPORTED SUBROUTINES
   
 =over 4  =over
   
 =item *  =item escape()
   
 escape() : unpack non-word characters into CGI-compatible hex codes  unpack non-word characters into CGI-compatible hex codes
   
 =item *  =item unescape()
   
 unescape() : pack CGI-compatible hex codes into actual non-word ASCII character   pack CGI-compatible hex codes into actual non-word ASCII character
   
 =item *  =item  add_get_param()
   
 add_get_param() :  Append escaped form elements (name=value etc.) to a url.
    
  Inputs:  url (with or without exit GET from parameters), hash ref of   Inputs:  url (with or without exit GET from parameters), hash ref of
               form name => value pairs                form name => value pairs
   
  Return: url with properly added the form name elements and values to the    Return: url with form name elements and values appended to the 
          the url doing proper escaping of the values and joining with ? or &           the url, doing proper escaping of the values and joining with ? or &
          as needed           as needed
   
   =item clean_handle()
   
   =item propath()
   
   =item untie_domain_hash()
   
   =item tie_domain_hash()
   
   Manipulation of hash based databases (factoring out common code
   for later use as we refactor.
   
    Ties a domain level resource file to a hash.
    If requested a history entry is created in the associated hist file.
   
    Parameters:
       domain    - Name of the domain in which the resource file lives.
       namespace - Name of the hash within that domain.
       how       - How to tie the hash (e.g. GDBM_WRCREAT()).
       loghead   - Optional parameter, if present a log entry is created
                   in the associated history file and this is the first part
                    of that entry.
       logtail   - Goes along with loghead,  The actual logentry is of the
                   form $loghead:<timestamp>:logtail.
   Returns:
      Reference to a hash bound to the db file or alternatively undef
      if the tie failed.
   
   =item tie_user_hash()
   
     Ties a user's resource file to a hash.  
     If necessary, an appropriate history
     log file entry is made as well.
     This sub factors out common code from the subs that manipulate
     the various gdbm files that keep keyword value pairs.
   Parameters:
     domain       - Name of the domain the user is in.
     user         - Name of the 'current user'.
     namespace    - Namespace representing the file to tie.
     how          - What the tie is done to (e.g. GDBM_WRCREAT().
     loghead      - Optional first part of log entry if there may be a
                    history file.
     what         - Optional tail of log entry if there may be a history
                    file.
   Returns:
     hash to which the database is tied.  It's up to the caller to untie.
     undef if the has could not be tied.
   
   =item locking_hash_tie()
   
   routines if you just have a filename return tied hashref or undef
   
   =item locking_hash_untie()
   
   =item db_filename_parts()
   
   =head1 INTERNAL SUBROUTINES
   
   =item _do_hash_tie()
   
   =item _do_hash_untie()
   
 =back  =back
   
   =cut
   
Removed from v.1.15  
changed lines
  Added in v.1.28

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