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devi@101
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     1 #!/usr/bin/perl
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     2 
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     3 use strict;
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     4 use CGI qw(:standard);
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     5 use utf8;
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     6 
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     7 BEGIN {
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     8     chdir("/home/devi/cvs/lilalo");
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     9     require l3config;
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    10     l3config::init_config();
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    11 };
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    12 
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    13 sub path_is_correct($);
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    14 sub error($);
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    15 sub remove_extra_slashes_from($);
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    16 sub print_header($);
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    17 sub print_footer;
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    18 sub nav_bar;
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    19 
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    20 my $print="";
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    21 my $path = $ENV{PATH_INFO};
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    22 remove_extra_slashes_from($path);
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    23 
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    24 my $real_path = $l3config::Config{"backend_datadir"} ;
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    25 my $cgi_path = $l3config::Config{"cgi_path"} ;
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    26 my $style_files = $l3config::Config{"frontend_files"} ;
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    27 my $frontend_css = $l3config::Config{"frontend_css"} ;
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    28 my $data_file = "data.xml";
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    29 
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    30 path_is_correct($path)
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    31     or error ("Путь $path содержит недопустимые символы или комбинации символов.");
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    32 
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    33 $real_path .= $path;
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    34 remove_extra_slashes_from($real_path);
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    35 
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    36 # Чувак, ты хотел бы посмотреть на журнал $path
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    37 # Он должен находиться в каталоге $real_path файловой системы\n";
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    38 
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    39 (-d $real_path)
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    40     or error("Каталог <b>$real_path</b> не существует. Проверьте, пожалуйста, URL\n");
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    41 
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    42 if (-e $real_path."/$data_file") {
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    43 
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    44 # В каталоге есть файл $data_file
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    45 # Отлично! Сейчас будем показывать журнал
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    46 
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    47 # Если существуют html и xml файлы,
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    48 # html файл новее чем xml,
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    49 # и CGI-скрипту не передано дополнительных параметров, 
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    50 # используем html файл, иначе перегенируем его
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    51 
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    52     unless ( -e "$real_path/$data_file"
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    53              && -e "$real_path/index.html" 
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    54              && (stat("$real_path/index.html"))[9] > (stat("$real_path/$data_file"))[9] ) {
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    55 
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    56         my $l3_frontend = "/home/devi/cvs/lilalo/l3-frontend --backend_datafile $real_path/$data_file --output $real_path/index.html";
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    57         system($l3_frontend) == 0
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    58             or error("Файл журнала найден, но возникла ошибка при его обработке:<br/> $!");
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    59         $print .= "(перегенирован)<br/>";
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    60     }
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    61 
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    62     {
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    63         local $/;
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    64         open(HTML, "<:utf8", "$real_path/index.html");
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    65         my $html = <HTML>;
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    66 
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    67 # Добавим в начало документа навигационную строку
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    68         my $nav_bar = nav_bar;
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    69         $html =~ s/(<body[^>]*>)/$1$nav_bar/;
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    70 
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    71         $print .= $html;
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    72         close(HTML);
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    73     }
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    74 
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    75 }
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    76 else {
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    77 
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    78 # В этом каталоге нет файла data.xml
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    79 # Но в нём должны быть подкаталоги!
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    80 # Если и их тут нет, то тут вообще делать нечего
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    81 
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    82     $print .= nav_bar;
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    83 
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    84     my @dirs = glob("$real_path/*");
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    85     my $folder_link = "$cgi_path/$path";
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    86     remove_extra_slashes_from($folder_link);
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    87 
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    88     $folder_link =~ s@/[^\/]*/?$@@;
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    89     if ($folder_link) {
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    90         $print .= "<img src='$style_files/folder.up.gif'/><a href='$folder_link'>..</a><br/>";
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    91     }
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    92 
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    93     for my $dir (@dirs) {
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    94         next unless (-d $dir);
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    95         my ($folder_name) = $dir =~ m@.*/(.*)@;
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    96         $folder_link = "$cgi_path/$path/$folder_name";
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    97         $folder_link =~ s@//@/@g;
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    98         $print .= "<img src='$style_files/folder.gif'/><a href='$folder_link'>$folder_name</a><br/>";
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    99     }
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   100 
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   101     $print = print_header("LiLaLo -- ".remove_extra_slashes_from("$cgi_path/$path"))
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   102             .$print
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   103             .print_footer;
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   104 };
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   105 
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   106 binmode STDOUT, ":utf8";
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   107 print header(-charset => "utf-8");
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   108 print $print;
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   109 exit(0);
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   110 
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   111 #----------------------------------------------
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   112 
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   113 
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   114 sub error($)
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   115 {
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   116 my $message = $_[0];
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   117 
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   118 binmode STDOUT, ":utf8";
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   119 print header(-charset => "utf-8");
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   120 
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   121 my $print = "<h2>Извините, произошла ошибка</h2>";
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   122 $print .= $message;
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   123 
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   124 print $print;
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   125 exit(0);
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   126 }
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   127 
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   128 
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   129 sub path_is_correct($)
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   130 {
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   131     my $path = $_[0];
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   132     return 0 if $path =~ m@/../@;
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   133     return 0 unless $path =~ m@^[a-zA-Z0-9./\@\-]*$@;
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   134     return 1;
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   135 }
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   136 
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   137 sub remove_extra_slashes_from($) 
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   138 {
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   139   while ($_[0] =~ s@//@/@g) {1;};
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   140   return $_[0];
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   141 }
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   142 
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   143 sub print_header($)
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   144 {
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   145     my $title = $_[0];
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   146     "<html>"
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   147     ."<head>"
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   148     ."<meta content='text/html; charset=utf-8' http-equiv='Content-Type' />"
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   149     ."<link rel='stylesheet' href='$frontend_css' type='text/css'/>"
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   150     ."<title>$title</title>"
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   151     ."</head>"
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   152 }
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   153 
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   154 sub print_footer()
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   155 {
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   156     "</html>";
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   157 }
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   158 
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   159 sub nav_bar()
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   160 {
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   161     my $nav_bar="";
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   162     my $skip_first=1;
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   163     my $current_path="";
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   164     for my $path_part (split("/", remove_extra_slashes_from("$cgi_path/$path"))) {
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   165         if ($skip_first) {
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   166             $skip_first--;
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   167             next;
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   168         }
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   169         $current_path .= "/$path_part";
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   170         $nav_bar .= "/<a href='$current_path'>$path_part</a>";
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   171     }
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   172     return "<table class='nav_bar' cellpadding='0' cellspacing='0' width='100%'><tr><td>$nav_bar</td></tr></table>";
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   173 }
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   174 
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