modules/Config/DevEdit.pm

   1 package Config::DevEdit;
   2
   3 #
   4 # Dev-Editor - Module Config::DevEdit
   5 #
   6 # Read and parse the configuration files
   7 #
   8 # Author:        Patrick Canterino <patrick@patshaping.de>
   9 # Last modified: 2005-09-30
  10 #
  11
  12 use strict;
  13
  14 use vars qw(@EXPORT);
  15 use Carp qw(croak);
  16
  17 use Text::ParseWords;
  18
  19 ### Export ###
  20
  21 use base qw(Exporter);
  22
  23 @EXPORT = qw(read_config);
  24
  25 use Data::Dumper;
  26
  27 # read_config()
  28 #
  29 # Read the configuration files of Dev-Editor
  30 #
  31 # Params: Path to main configuration file
  32 #
  33 # Return: Configuration (Hash Reference)
  34
  35 sub read_config($)
  36 {
  37  my $file = shift;
  38
  39  my $config = parse_config($file);
  40
  41  $config->{'errors'}    = parse_config($config->{'error_file'});
  42  $config->{'templates'} = parse_config($config->{'template_file'});
  43
  44  # Check if we have to parse the user config file
  45
  46  if($ENV{'REMOTE_USER'} && $config->{'userconf_file'} && -f $config->{'userconf_file'})
  47  {
  48   my $userconf = parse_config($config->{'userconf_file'});
  49
  50   # Parse aliases (we use references, so we won't get a memory
  51   # problem so soon...)
  52
  53   foreach my $user(keys(%$userconf))
  54   {
  55    if(my $aliases = $userconf->{$user}->{'aliases'})
  56    {
  57     foreach my $alias(parse_line('\s+',0,$aliases))
  58     {
  59      $userconf->{$alias} = $userconf->{$user} unless($userconf->{$alias});
  60     }
  61    }
  62   }
  63
  64   if($userconf->{$ENV{'REMOTE_USER'}})
  65   {
  66    # The current HTTP Auth user has got an individual configuration
  67    # Overwrite the default values
  68
  69    my $new_conf = $userconf->{$ENV{'REMOTE_USER'}};
  70
  71    $config->{'fileroot'}  = $new_conf->{'fileroot'}  if($new_conf->{'fileroot'});
  72    $config->{'httproot'}  = $new_conf->{'httproot'}  if($new_conf->{'httproot'});
  73
  74    $config->{'forbidden'} = $new_conf->{'forbidden'} if(defined $new_conf->{'forbidden'});
  75
  76    $config->{'user_config'} = 1;
  77   }
  78  }
  79
  80  # Parse list of forbidden files
  81
  82  if($config->{'forbidden'})
  83  {
  84   my @files;
  85
  86   foreach my $file(parse_line('\s+',0,$config->{'forbidden'}))
  87   {
  88    $file =~ tr!\\!/!;
  89
  90    $file =  '/'.$file unless($file =~ m!^/!);
  91    $file =~ s!/+$!!g;
  92
  93    push(@files,$file);
  94   }
  95
  96   $config->{'forbidden'} = \@files;
  97  }
  98  else
  99  {
 100   $config->{'forbidden'} = [];
 101  }
 102
 103  return $config;
 104 }
 105
 106 # parse_config()
 107 #
 108 # Parse a configuration file
 109 #
 110 # Params: Path to configuration file
 111 #
 112 # Return: Configuration (Hash Reference)
 113
 114 sub parse_config($)
 115 {
 116  my $file = shift;
 117  local *CF;
 118
 119  open(CF,'<'.$file) or croak("Open $file: $!");
 120  read(CF, my $data, -s $file);
 121  close(CF);
 122
 123  my @lines  = split(/\015\012|\012|\015/,$data);
 124  my $config = {};
 125  my $count  = 0;
 126  my $sect;
 127
 128  foreach my $line(@lines)
 129  {
 130   $count++;
 131
 132   next if($line =~ /^\s*#/);
 133
 134   if($line =~ /^\s*\[(\S+)\]\s*$/)
 135   {
 136    # Switch to new section
 137
 138    $sect = $1;
 139   }
 140   elsif($line =~ /^\s*\S+\s*=.*$/)
 141   {
 142    # A normal "key = value" line
 143
 144    my ($key,$value) = split(/=/,$line,2);
 145
 146    # Remove whitespaces at the beginning and at the end
 147
 148    $key   =~ s/^\s+//g;
 149    $key   =~ s/\s+$//g;
 150    $value =~ s/^\s+//g;
 151    $value =~ s/\s+$//g;
 152
 153    if($sect)
 154    {
 155     $config->{$sect} = {} if(ref($config->{$sect}) ne 'HASH');
 156
 157     croak "Configuration option '$key' of section '$sect' defined twice in line $count of configuration file '$file'" if($config->{$sect}->{$key});
 158
 159     $config->{$sect}->{$key} = $value;
 160    }
 161    else
 162    {
 163     croak "Configuration option '$key' defined twice in line $count of configuration file '$file'" if($config->{$key});
 164
 165     $config->{$key} = $value;
 166    }
 167   }
 168  }
 169
 170  return $config;
 171 }
 172
 173 # it's true, baby ;-)
 174
 175 1;
 176
 177 #
 178 ### End ###