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Diff for /loncom/LONCAPA.pm between versions 1.18 and 1.29

version 1.18, 2006/12/06 22:22:36 version 1.29, 2009/10/29 03:23:52
Line 27 Line 27
 #  #
 ###  ###
   
   
   
 package LONCAPA;  package LONCAPA;
   
 use strict;  use strict;
Line 42  my $loncapa_max_wait_time = 13; Line 44  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_courseid $match_not_courseid
               $match_community
     $match_name      $match_name
               $match_lonid
     $match_handle   $match_not_handle);      $match_handle   $match_not_handle);
   
 require Exporter;  require Exporter;
Line 53  our @EXPORT = qw(&add_get_param    &esca Line 57  our @EXPORT = qw(&add_get_param    &esca
 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_courseid $match_not_courseid
                       $match_community
     $match_name      $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_courseid $match_not_courseid
                                      $match_community
    $match_name     $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 110  sub clean_domain { Line 111  sub clean_domain {
     return $domain;      return $domain;
 }  }
   
 $match_username     = $LONCAPA::username_re     = qr{[a-zA-Z\_][\w\-.]+};  $match_username     = $LONCAPA::username_re     = qr{\w[\w\-.@]+};
 $match_not_username = $LONCAPA::not_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/^\d+//;      $username =~ s/^\W+//;
     $username =~ s/$match_not_username//g;      $username =~ s/$match_not_username//g;
     return $username;      return $username;
 }  }
   
   
 $match_courseid     = $LONCAPA::courseid_re     = qr{\d[\w\-.]+};  $match_courseid     = $LONCAPA::courseid_re     = qr{\d[\w\-.]+};
   $match_community    =$LONCAPA::community_re     = qr{0[\w\-.]+};
 $match_not_courseid = $LONCAPA::not_courseid_re = qr{[^\w\-.]+};  $match_not_courseid = $LONCAPA::not_courseid_re = qr{[^\w\-.]+};
 sub is_courseid {  sub clean_courseid {
     my ($courseid) = @_;      my ($courseid) = @_;
     return ($courseid =~ m/^$match_courseid$/);      $courseid =~ s/^\D+//;
       $courseid =~ s/$match_not_courseid//g;
       return $courseid;
 }  }
   
 $match_name         = $LONCAPA::name = qr{$match_username|$match_courseid};  $match_name         = $LONCAPA::name_re = qr{$match_username|$match_courseid};
 sub clean_name {  sub clean_name {
     my ($name) = @_;      my ($name) = @_;
     $name =~ s/$match_not_username//g;      $name =~ s/$match_not_username//g;
     return $name;      return $name;
 }  }
   
   $match_lonid     = $LONCAPA::lonid_re     = qr{[\w\-.]+};
   
 sub split_courseid {  sub split_courseid {
     my ($courseid) = @_;      my ($courseid) = @_;
     my  ($domain,$coursenum) =       my  ($domain,$coursenum) = 
Line 141  sub split_courseid { Line 147  sub split_courseid {
     return ($domain,$coursenum);      return ($domain,$coursenum);
 }  }
   
 $match_handle     = $LONCAPA::handle_re     = qr{[\w\-.]+};  $match_handle     = $LONCAPA::handle_re     = qr{[\w\-.@]+};
 $match_not_handle = $LONCAPA::not_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 159  sub propath { Line 165  sub propath {
     $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;      $subdir =~ s/(.)(.)(.).*/$1\/$2\/$3/;
     my $proname="$perlvar{'lonUsersDir'}/$udom/$subdir/$uname";      my $proname="$perlvar{'lonUsersDir'}/$udom/$subdir/$uname";
     return $proname;      return $proname;
 }   }
   
   
 #---------------------------------------------------------------  
 #  
 # 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 201  sub tie_domain_hash { Line 185  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 234  sub untie_user_hash { Line 201  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 413  __END__ Line 378  __END__
   
 =head1 NAME  =head1 NAME
   
   Apache::LONCAPA
   
 LONCAPA - Basic routines  LONCAPA - Basic routines
   
 =head1 SYNOPSIS  =head1 SYNOPSIS
Line 421  Generally useful routines Line 388  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.1.18  
changed lines
  Added in v.1.29

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