1 | <?php |
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2 | /** |
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3 | * technikum29v6 - PHP Subsystem. |
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4 | * Haupteinstiegspunkt ("WebStart.php"), welches |
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5 | * ohne weiteren Funktionsaufruf alles macht. |
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6 | * |
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7 | **/ |
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8 | |
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9 | if(defined('T29')) return false; // no nesting |
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10 | define('T29', true); |
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11 | |
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12 | // is it an external call? |
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13 | $external = isset($external); |
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14 | |
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15 | // at least the $seiten_id must be defined |
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16 | if(!isset($seiten_id)) { |
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17 | print "<html><pre>The t29v6 WebStart file\n"; |
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18 | print 'technikum29.php is the main include, but requires at least global <tt>$seiten_id</tt> to be defined.'; |
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19 | print "\n<a href='https://labs.technikum29.de/browser/technikum29%20Website/lib/technikum29.php'>Read my sourcecode</a>"; |
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20 | return false; |
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21 | } |
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22 | |
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23 | $lib = dirname(__FILE__); |
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24 | $webroot = realpath("$lib/../"); # file path to root of t29 web installation |
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25 | |
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26 | // early import host specific settings for making low level corrections like Bugfix #32 |
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27 | require "$lib/host.php"; |
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28 | $host = $external ? t29Host::create('t29ExternalHost') : t29Host::detect(); |
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29 | |
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30 | $file = $host->script_filename; # e.g.: "/de/page.php" |
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31 | # Bug when DOCUMENT_ROOT ends with trailing slash: make sure $file begins with /: |
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32 | if($file{0} != '/') $file = "/$file"; |
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33 | |
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34 | // exactly define debugging behaviour |
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35 | if(isset($_GET['debug'])) { |
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36 | $_GET['purge_cache'] = true; |
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37 | $_GET['rl_debug'] = true; |
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38 | } |
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39 | |
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40 | // check for url rewriting neccessarity (skip at external calls) |
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41 | if($host->check_url_rewrite()) exit; |
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42 | |
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43 | $cache_dir = "$webroot/shared/cache"; |
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44 | $languages = array( |
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45 | // shorthand => array(full name in page, path from webroot) |
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46 | "de" => array("Deutsch", "/de"), |
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47 | "en" => array("English", "/en"), |
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48 | ); |
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49 | |
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50 | // make sure we have a page title |
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51 | if(isset($title)) $titel = $title; |
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52 | elseif(isset($titel)) $title = $titel; |
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53 | else $titel = $title = false; // to be determined by navigation seiten_id. |
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54 | |
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55 | // try to determine the language from the file path |
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56 | if(!isset($lang)) $lang = substr($file, 1, 2); |
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57 | if(!in_array($lang, array_keys($languages))) $lang = "de"; # check if language exists |
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58 | $lang_path = $languages[$lang][1]; # shorthand, relative to webroot. use "$webroot$lang_path" for local. |
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59 | |
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60 | // "AJAX" calls are our meaning for pages without chrome |
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61 | $ajax = isset($_GET['ajax']); |
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62 | if(!$external && $ajax) { |
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63 | // print only a minimal chrome, no caching. |
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64 | require "$lib/ajax-template.php"; |
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65 | $ajax_tmpl = new t29AJAXTemplate($GLOBALS); |
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66 | $ajax_tmpl->print_page(); |
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67 | // important: do not execute code further down (Templating stuff) |
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68 | return true; |
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69 | } |
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70 | |
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71 | require "$lib/cache.php"; |
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72 | |
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73 | // "External" pages which are not part of the t29 website |
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74 | if($external) { |
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75 | // skip caching stuff. External pages don't get in touch with |
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76 | // any navigation.xml or news.php etc. |
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77 | require "$lib/template.php"; |
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78 | $header_cache = new t29Cache(/*debug*/false, /*verbose*/true, /*skip=memory only*/true); |
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79 | $footer_cache = new t29Cache(/*debug*/false, /*verbose*/true, /*skip=memory only*/true); |
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80 | $tmpl = new t29Template($GLOBALS); |
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81 | $tmpl->create_separate_caches($header_cache, $footer_cache); |
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82 | // important: do not execute caching stuff below |
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83 | return true; |
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84 | } |
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85 | |
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86 | $page_cache = new t29Cache(false, true); // debug, verbose |
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87 | $page_cache->set_cache_file($webroot, $file); |
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88 | $page_cache->test_files = array( |
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89 | __FILE__, |
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90 | $_SERVER['SCRIPT_FILENAME'], |
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91 | "$lib/template.php", |
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92 | "$lib/menu.php", |
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93 | "$lib/messages.php", |
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94 | "$lib/host.php", |
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95 | "$webroot$lang_path/navigation.xml", |
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96 | "$webroot$lang_path/news.php", |
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97 | $webroot.$host->ressources_get_pagestyle($seiten_id), |
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98 | ); |
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99 | |
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100 | // dynamical content: |
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101 | $static_page = !isset($dynamischer_inhalt); |
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102 | |
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103 | if(!$static_page) { |
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104 | // Pages with dynamical content: only cache header and footer, seperately. |
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105 | // they depend on same test files, so there is only one is_valid check. |
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106 | $header_cache = $page_cache; |
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107 | $footer_cache = clone $page_cache; |
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108 | |
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109 | $header_cache->set_cache_file($webroot, $file.'-header'); |
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110 | $footer_cache->set_cache_file($webroot, $file.'-footer'); |
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111 | } |
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112 | |
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113 | if($page_cache->shall_use()) { |
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114 | if($static_page) |
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115 | $page_cache->print_cache_and_exit(); |
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116 | else { |
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117 | $header_cache->print_cache(true); |
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118 | register_shutdown_function(function() use ($footer_cache) { |
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119 | $footer_cache->print_cache(true); |
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120 | }); |
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121 | // now print your dynamical stuff in your page, the |
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122 | // footer content will be automatically added afterwards. |
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123 | } |
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124 | } else { |
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125 | // cache missed, rebuild cache |
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126 | require "$lib/template.php"; |
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127 | $tmpl = new t29Template($GLOBALS); |
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128 | if($static_page) |
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129 | // rebuild complete site cache |
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130 | $tmpl->create_cache($page_cache); |
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131 | else |
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132 | // rebuild each header and footer cache |
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133 | $tmpl->create_separate_caches($header_cache, $footer_cache); |
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134 | } |
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135 | |
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136 | |
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137 | // end of technikum29.php |
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