plugins/af_readability/init.php

   1 <?php
   2 class Af_Readability extends Plugin {
   3
   4         private $host;
   5
   6         function about() {
   7                 return array(1.0,
   8                         "Try to inline article content using Readability",
   9                         "fox");
  10         }
  11
  12         function save() {
  13                 //
  14         }
  15
  16         function init($host)
  17         {
  18                 $this->host = $host;
  19
  20                 $host->add_hook($host::HOOK_ARTICLE_FILTER, $this);
  21                 $host->add_hook($host::HOOK_PREFS_TAB, $this);
  22                 $host->add_hook($host::HOOK_PREFS_EDIT_FEED, $this);
  23                 $host->add_hook($host::HOOK_PREFS_SAVE_FEED, $this);
  24         }
  25
  26         function hook_prefs_tab($args) {
  27                 if ($args != "prefFeeds") return;
  28
  29                 print "<div dojoType=\"dijit.layout.AccordionPane\" title=\"".__('af_readability settings')."\">";
  30
  31                 print_notice("Enable the plugin for specific feeds in the feed editor.");
  32
  33                 $enabled_feeds = $this->host->get($this, "enabled_feeds");
  34                 if (!array($enabled_feeds)) $enabled_feeds = array();
  35
  36                 $enabled_feeds = $this->filter_unknown_feeds($enabled_feeds);
  37                 $this->host->set($this, "enabled_feeds", $enabled_feeds);
  38
  39                 if (count($enabled_feeds) > 0) {
  40                         print "<h3>" . __("Currently enabled for (click to edit):") . "</h3>";
  41
  42                         print "<ul class=\"browseFeedList\" style=\"border-width : 1px\">";
  43                         foreach ($enabled_feeds as $f) {
  44                                 print "<li>" .
  45                                         "<img src='images/pub_set.png'
  46                                                 style='vertical-align : middle'> <a href='#'
  47                                                 onclick='editFeed($f)'>".
  48                                         getFeedTitle($f) . "</a></li>";
  49                         }
  50                         print "</ul>";
  51                 }
  52
  53                 print "</div>";
  54         }
  55
  56         function hook_prefs_edit_feed($feed_id) {
  57                 print "<div class=\"dlgSec\">".__("Readability")."</div>";
  58                 print "<div class=\"dlgSecCont\">";
  59
  60                 $enabled_feeds = $this->host->get($this, "enabled_feeds");
  61                 if (!array($enabled_feeds)) $enabled_feeds = array();
  62
  63                 $key = array_search($feed_id, $enabled_feeds);
  64                 $checked = $key !== FALSE ? "checked" : "";
  65
  66                 print "<hr/><input dojoType=\"dijit.form.CheckBox\" type=\"checkbox\" id=\"af_readability_enabled\"
  67                         name=\"af_readability_enabled\"
  68                         $checked>&nbsp;<label for=\"af_readability_enabled\">".__('Inline article content')."</label>";
  69
  70                 print "</div>";
  71         }
  72
  73         function hook_prefs_save_feed($feed_id) {
  74                 $enabled_feeds = $this->host->get($this, "enabled_feeds");
  75                 if (!is_array($enabled_feeds)) $enabled_feeds = array();
  76
  77                 $enable = checkbox_to_sql_bool($_POST["af_readability_enabled"]) == 'true';
  78                 $key = array_search($feed_id, $enabled_feeds);
  79
  80                 if ($enable) {
  81                         if ($key === FALSE) {
  82                                 array_push($enabled_feeds, $feed_id);
  83                         }
  84                 } else {
  85                         if ($key !== FALSE) {
  86                                 unset($enabled_feeds[$key]);
  87                         }
  88                 }
  89
  90                 $this->host->set($this, "enabled_feeds", $enabled_feeds);
  91         }
  92
  93         function hook_article_filter($article) {
  94
  95                 $enabled_feeds = $this->host->get($this, "enabled_feeds");
  96                 $key = array_search($article["feed"]["id"], $enabled_feeds);
  97                 if ($key === FALSE) return $article;
  98
  99                 if (!class_exists("Readability")) require_once(dirname(dirname(__DIR__)). "/lib/readability/Readability.php");
 100
 101                 if (function_exists("curl_init")) {
 102                         $ch = curl_init($article["link"]);
 103                         curl_setopt($ch, CURLOPT_TIMEOUT, 5);
 104                         curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
 105                         curl_setopt($ch, CURLOPT_HEADER, true);
 106                         curl_setopt($ch, CURLOPT_NOBODY, true);
 107                         curl_setopt($ch, CURLOPT_FOLLOWLOCATION,
 108                                 !ini_get("safe_mode") && !ini_get("open_basedir"));
 109                         curl_setopt($ch, CURLOPT_USERAGENT, SELF_USER_AGENT);
 110
 111                         @$result = curl_exec($ch);
 112                         $content_type = curl_getinfo($ch, CURLINFO_CONTENT_TYPE);
 113
 114                         if (strpos($content_type, "text/html") === FALSE)
 115                                 return $article;
 116                 }
 117
 118                 $tmp = fetch_file_contents($article["link"]);
 119
 120                 if ($tmp) {
 121                         $tmpdoc = new DOMDocument("1.0", "UTF-8");
 122
 123                         if (!$tmpdoc->loadHTML($tmp))
 124                                 return $article;
 125
 126                         if (strtolower($tmpdoc->encoding) != 'utf-8') {
 127                                 $tmpxpath = new DOMXPath($tmpdoc);
 128
 129                                 foreach ($tmpxpath->query("//meta") as $elem) {
 130                                         $elem->parentNode->removeChild($elem);
 131                                 }
 132
 133                                 $tmp = $tmpdoc->saveHTML();
 134                         }
 135
 136                         $r = new Readability($tmp, $article["link"]);
 137
 138                         if ($r->init()) {
 139
 140                                 $tmpxpath = new DOMXPath($r->dom);
 141
 142                                 $entries = $tmpxpath->query('(//a[@href]|//img[@src])');
 143
 144                                 foreach ($entries as $entry) {
 145                                         if ($entry->hasAttribute("href")) {
 146                                                 $entry->setAttribute("href",
 147                                                         rewrite_relative_url($article["link"], $entry->getAttribute("href")));
 148
 149                                         }
 150
 151                                         if ($entry->hasAttribute("src")) {
 152                                                 $entry->setAttribute("src",
 153                                                         rewrite_relative_url($article["link"], $entry->getAttribute("src")));
 154
 155                                         }
 156
 157                                 }
 158
 159                                 $article["content"] = $r->articleContent->innerHTML;
 160                         }
 161                 }
 162
 163                 return $article;
 164
 165         }
 166
 167         function api_version() {
 168                 return 2;
 169         }
 170
 171         private function filter_unknown_feeds($enabled_feeds) {
 172                 $tmp = array();
 173
 174                 foreach ($enabled_feeds as $feed) {
 175
 176                         $result = db_query("SELECT id FROM ttrss_feeds WHERE id = '$feed' AND owner_uid = " . $_SESSION["uid"]);
 177
 178                         if (db_num_rows($result) != 0) {
 179                                 array_push($tmp, $feed);
 180                         }
 181                 }
 182
 183                 return $tmp;
 184         }
 185
 186 }
 187 ?>