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authorNicolas Lœuillet <nicolas@loeuillet.org>2014-02-25 17:27:51 +0100
committerNicolas Lœuillet <nicolas@loeuillet.org>2014-02-25 17:27:51 +0100
commit9fad46bd0e448b312b426370770d967831e3c7f5 (patch)
tree3525b25f04e6bacab1028e8da7caf72d68e03049 /inc
parent92fc97eeb3cbda0f7cee9b670c30bbf6b23b9e39 (diff)
parentdcc73856a900a98b2b1efd5292eea6f662924884 (diff)
downloadwallabag-9fad46bd0e448b312b426370770d967831e3c7f5.tar.gz
wallabag-9fad46bd0e448b312b426370770d967831e3c7f5.tar.zst
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Merge pull request #495 from mariroz/dev
fix of global $http visibility, issues #493, #494
Diffstat (limited to 'inc')
-rwxr-xr-xinc/3rdparty/makefulltextfeed.php352
-rwxr-xr-xinc/3rdparty/makefulltextfeedHelpers.php355
2 files changed, 357 insertions, 350 deletions
diff --git a/inc/3rdparty/makefulltextfeed.php b/inc/3rdparty/makefulltextfeed.php
index 2852c4c2..b024547f 100755
--- a/inc/3rdparty/makefulltextfeed.php
+++ b/inc/3rdparty/makefulltextfeed.php
@@ -55,42 +55,8 @@ if (get_magic_quotes_gpc()) {
55 55
56// set include path 56// set include path
57set_include_path(realpath(dirname(__FILE__).'/libraries').PATH_SEPARATOR.get_include_path()); 57set_include_path(realpath(dirname(__FILE__).'/libraries').PATH_SEPARATOR.get_include_path());
58// Autoloading of classes allows us to include files only when they're 58
59// needed. If we've got a cached copy, for example, only Zend_Cache is loaded. 59require_once dirname(__FILE__).'/makefulltextfeedHelpers.php';
60function autoload($class_name) {
61 static $dir = null;
62 if ($dir === null) $dir = dirname(__FILE__).'/libraries/';
63 static $mapping = array(
64 // Include FeedCreator for RSS/Atom creation
65 'FeedWriter' => 'feedwriter/FeedWriter.php',
66 'FeedItem' => 'feedwriter/FeedItem.php',
67 // Include ContentExtractor and Readability for identifying and extracting content from URLs
68 'ContentExtractor' => 'content-extractor/ContentExtractor.php',
69 'SiteConfig' => 'content-extractor/SiteConfig.php',
70 'Readability' => 'readability/Readability.php',
71 // Include Humble HTTP Agent to allow parallel requests and response caching
72 'HumbleHttpAgent' => 'humble-http-agent/HumbleHttpAgent.php',
73 'SimplePie_HumbleHttpAgent' => 'humble-http-agent/SimplePie_HumbleHttpAgent.php',
74 'CookieJar' => 'humble-http-agent/CookieJar.php',
75 // Include Zend Cache to improve performance (cache results)
76 'Zend_Cache' => 'Zend/Cache.php',
77 // Language detect
78 'Text_LanguageDetect' => 'language-detect/LanguageDetect.php',
79 // HTML5 Lib
80 'HTML5_Parser' => 'html5/Parser.php',
81 // htmLawed - used if XSS filter is enabled (xss_filter)
82 'htmLawed' => 'htmLawed/htmLawed.php'
83 );
84 if (isset($mapping[$class_name])) {
85 debug("** Loading class $class_name ({$mapping[$class_name]})");
86 require $dir.$mapping[$class_name];
87 return true;
88 } else {
89 return false;
90 }
91}
92spl_autoload_register('autoload');
93require dirname(__FILE__).'/libraries/simplepie/autoloader.php';
94 60
95//////////////////////////////// 61////////////////////////////////
96// Load config file 62// Load config file
@@ -478,29 +444,6 @@ if ($html_only || !$result) {
478 $isDummyFeed = true; 444 $isDummyFeed = true;
479 unset($feed, $result); 445 unset($feed, $result);
480 // create single item dummy feed object 446 // create single item dummy feed object
481 class DummySingleItemFeed {
482 public $item;
483 function __construct($url) { $this->item = new DummySingleItem($url); }
484 public function get_title() { return ''; }
485 public function get_description() { return 'Content extracted from '.$this->item->url; }
486 public function get_link() { return $this->item->url; }
487 public function get_language() { return false; }
488 public function get_image_url() { return false; }
489 public function get_items($start=0, $max=1) { return array(0=>$this->item); }
490 }
491 class DummySingleItem {
492 public $url;
493 function __construct($url) { $this->url = $url; }
494 public function get_permalink() { return $this->url; }
495 public function get_title() { return null; }
496 public function get_date($format='') { return false; }
497 public function get_author($key=0) { return null; }
498 public function get_authors() { return null; }
499 public function get_description() { return ''; }
500 public function get_enclosure($key=0, $prefer=null) { return null; }
501 public function get_enclosures() { return null; }
502 public function get_categories() { return null; }
503 }
504 $feed = new DummySingleItemFeed($url); 447 $feed = new DummySingleItemFeed($url);
505} 448}
506 449
@@ -903,294 +846,3 @@ if (!$debug_mode) {
903 if ($callback) echo ');'; 846 if ($callback) echo ');';
904} 847}
905 848
906///////////////////////////////
907// HELPER FUNCTIONS
908///////////////////////////////
909
910function url_allowed($url) {
911 global $options;
912 if (!empty($options->allowed_urls)) {
913 $allowed = false;
914 foreach ($options->allowed_urls as $allowurl) {
915 if (stristr($url, $allowurl) !== false) {
916 $allowed = true;
917 break;
918 }
919 }
920 if (!$allowed) return false;
921 } else {
922 foreach ($options->blocked_urls as $blockurl) {
923 if (stristr($url, $blockurl) !== false) {
924 return false;
925 }
926 }
927 }
928 return true;
929}
930
931//////////////////////////////////////////////
932// Convert $html to UTF8
933// (uses HTTP headers and HTML to find encoding)
934// adapted from http://stackoverflow.com/questions/910793/php-detect-encoding-and-make-everything-utf-8
935//////////////////////////////////////////////
936function convert_to_utf8($html, $header=null)
937{
938 $encoding = null;
939 if ($html || $header) {
940 if (is_array($header)) $header = implode("\n", $header);
941 if (!$header || !preg_match_all('/^Content-Type:\s+([^;]+)(?:;\s*charset=["\']?([^;"\'\n]*))?/im', $header, $match, PREG_SET_ORDER)) {
942 // error parsing the response
943 debug('Could not find Content-Type header in HTTP response');
944 } else {
945 $match = end($match); // get last matched element (in case of redirects)
946 if (isset($match[2])) $encoding = trim($match[2], "\"' \r\n\0\x0B\t");
947 }
948 // TODO: check to see if encoding is supported (can we convert it?)
949 // If it's not, result will be empty string.
950 // For now we'll check for invalid encoding types returned by some sites, e.g. 'none'
951 // Problem URL: http://facta.co.jp/blog/archives/20111026001026.html
952 if (!$encoding || $encoding == 'none') {
953 // search for encoding in HTML - only look at the first 50000 characters
954 // Why 50000? See, for example, http://www.lemonde.fr/festival-de-cannes/article/2012/05/23/deux-cretes-en-goguette-sur-la-croisette_1705732_766360.html
955 // TODO: improve this so it looks at smaller chunks first
956 $html_head = substr($html, 0, 50000);
957 if (preg_match('/^<\?xml\s+version=(?:"[^"]*"|\'[^\']*\')\s+encoding=("[^"]*"|\'[^\']*\')/s', $html_head, $match)) {
958 $encoding = trim($match[1], '"\'');
959 } elseif (preg_match('/<meta\s+http-equiv=["\']?Content-Type["\']? content=["\'][^;]+;\s*charset=["\']?([^;"\'>]+)/i', $html_head, $match)) {
960 $encoding = trim($match[1]);
961 } elseif (preg_match_all('/<meta\s+([^>]+)>/i', $html_head, $match)) {
962 foreach ($match[1] as $_test) {
963 if (preg_match('/charset=["\']?([^"\']+)/i', $_test, $_m)) {
964 $encoding = trim($_m[1]);
965 break;
966 }
967 }
968 }
969 }
970 if (isset($encoding)) $encoding = trim($encoding);
971 // trim is important here!
972 if (!$encoding || (strtolower($encoding) == 'iso-8859-1')) {
973 // replace MS Word smart qutoes
974 $trans = array();
975 $trans[chr(130)] = '&sbquo;'; // Single Low-9 Quotation Mark
976 $trans[chr(131)] = '&fnof;'; // Latin Small Letter F With Hook
977 $trans[chr(132)] = '&bdquo;'; // Double Low-9 Quotation Mark
978 $trans[chr(133)] = '&hellip;'; // Horizontal Ellipsis
979 $trans[chr(134)] = '&dagger;'; // Dagger
980 $trans[chr(135)] = '&Dagger;'; // Double Dagger
981 $trans[chr(136)] = '&circ;'; // Modifier Letter Circumflex Accent
982 $trans[chr(137)] = '&permil;'; // Per Mille Sign
983 $trans[chr(138)] = '&Scaron;'; // Latin Capital Letter S With Caron
984 $trans[chr(139)] = '&lsaquo;'; // Single Left-Pointing Angle Quotation Mark
985 $trans[chr(140)] = '&OElig;'; // Latin Capital Ligature OE
986 $trans[chr(145)] = '&lsquo;'; // Left Single Quotation Mark
987 $trans[chr(146)] = '&rsquo;'; // Right Single Quotation Mark
988 $trans[chr(147)] = '&ldquo;'; // Left Double Quotation Mark
989 $trans[chr(148)] = '&rdquo;'; // Right Double Quotation Mark
990 $trans[chr(149)] = '&bull;'; // Bullet
991 $trans[chr(150)] = '&ndash;'; // En Dash
992 $trans[chr(151)] = '&mdash;'; // Em Dash
993 $trans[chr(152)] = '&tilde;'; // Small Tilde
994 $trans[chr(153)] = '&trade;'; // Trade Mark Sign
995 $trans[chr(154)] = '&scaron;'; // Latin Small Letter S With Caron
996 $trans[chr(155)] = '&rsaquo;'; // Single Right-Pointing Angle Quotation Mark
997 $trans[chr(156)] = '&oelig;'; // Latin Small Ligature OE
998 $trans[chr(159)] = '&Yuml;'; // Latin Capital Letter Y With Diaeresis
999 $html = strtr($html, $trans);
1000 }
1001 if (!$encoding) {
1002 debug('No character encoding found, so treating as UTF-8');
1003 $encoding = 'utf-8';
1004 } else {
1005 debug('Character encoding: '.$encoding);
1006 if (strtolower($encoding) != 'utf-8') {
1007 debug('Converting to UTF-8');
1008 $html = SimplePie_Misc::change_encoding($html, $encoding, 'utf-8');
1009 /*
1010 if (function_exists('iconv')) {
1011 // iconv appears to handle certain character encodings better than mb_convert_encoding
1012 $html = iconv($encoding, 'utf-8', $html);
1013 } else {
1014 $html = mb_convert_encoding($html, 'utf-8', $encoding);
1015 }
1016 */
1017 }
1018 }
1019 }
1020 return $html;
1021}
1022
1023function makeAbsolute($base, $elem) {
1024 $base = new SimplePie_IRI($base);
1025 // remove '//' in URL path (used to prevent URLs from resolving properly)
1026 // TODO: check if this is still the case
1027 if (isset($base->path)) $base->path = preg_replace('!//+!', '/', $base->path);
1028 foreach(array('a'=>'href', 'img'=>'src') as $tag => $attr) {
1029 $elems = $elem->getElementsByTagName($tag);
1030 for ($i = $elems->length-1; $i >= 0; $i--) {
1031 $e = $elems->item($i);
1032 //$e->parentNode->replaceChild($articleContent->ownerDocument->createTextNode($e->textContent), $e);
1033 makeAbsoluteAttr($base, $e, $attr);
1034 }
1035 if (strtolower($elem->tagName) == $tag) makeAbsoluteAttr($base, $elem, $attr);
1036 }
1037}
1038function makeAbsoluteAttr($base, $e, $attr) {
1039 if ($e->hasAttribute($attr)) {
1040 // Trim leading and trailing white space. I don't really like this but
1041 // unfortunately it does appear on some sites. e.g. <img src=" /path/to/image.jpg" />
1042 $url = trim(str_replace('%20', ' ', $e->getAttribute($attr)));
1043 $url = str_replace(' ', '%20', $url);
1044 if (!preg_match('!https?://!i', $url)) {
1045 if ($absolute = SimplePie_IRI::absolutize($base, $url)) {
1046 $e->setAttribute($attr, $absolute);
1047 }
1048 }
1049 }
1050}
1051function makeAbsoluteStr($base, $url) {
1052 $base = new SimplePie_IRI($base);
1053 // remove '//' in URL path (causes URLs not to resolve properly)
1054 if (isset($base->path)) $base->path = preg_replace('!//+!', '/', $base->path);
1055 if (preg_match('!^https?://!i', $url)) {
1056 // already absolute
1057 return $url;
1058 } else {
1059 if ($absolute = SimplePie_IRI::absolutize($base, $url)) {
1060 return $absolute;
1061 }
1062 return false;
1063 }
1064}
1065// returns single page response, or false if not found
1066function getSinglePage($item, $html, $url) {
1067 global $http, $extractor;
1068 debug('Looking for site config files to see if single page link exists');
1069 $site_config = $extractor->buildSiteConfig($url, $html);
1070 $splink = null;
1071 if (!empty($site_config->single_page_link)) {
1072 $splink = $site_config->single_page_link;
1073 } elseif (!empty($site_config->single_page_link_in_feed)) {
1074 // single page link xpath is targeted at feed
1075 $splink = $site_config->single_page_link_in_feed;
1076 // so let's replace HTML with feed item description
1077 $html = $item->get_description();
1078 }
1079 if (isset($splink)) {
1080 // Build DOM tree from HTML
1081 $readability = new Readability($html, $url);
1082 $xpath = new DOMXPath($readability->dom);
1083 // Loop through single_page_link xpath expressions
1084 $single_page_url = null;
1085 foreach ($splink as $pattern) {
1086 $elems = @$xpath->evaluate($pattern, $readability->dom);
1087 if (is_string($elems)) {
1088 $single_page_url = trim($elems);
1089 break;
1090 } elseif ($elems instanceof DOMNodeList && $elems->length > 0) {
1091 foreach ($elems as $item) {
1092 if ($item instanceof DOMElement && $item->hasAttribute('href')) {
1093 $single_page_url = $item->getAttribute('href');
1094 break 2;
1095 } elseif ($item instanceof DOMAttr && $item->value) {
1096 $single_page_url = $item->value;
1097 break 2;
1098 }
1099 }
1100 }
1101 }
1102 // If we've got URL, resolve against $url
1103 if (isset($single_page_url) && ($single_page_url = makeAbsoluteStr($url, $single_page_url))) {
1104 // check it's not what we have already!
1105 if ($single_page_url != $url) {
1106 // it's not, so let's try to fetch it...
1107 $_prev_ref = $http->referer;
1108 $http->referer = $single_page_url;
1109 if (($response = $http->get($single_page_url, true)) && $response['status_code'] < 300) {
1110 $http->referer = $_prev_ref;
1111 return $response;
1112 }
1113 $http->referer = $_prev_ref;
1114 }
1115 }
1116 }
1117 return false;
1118}
1119
1120// based on content-type http header, decide what to do
1121// param: HTTP headers string
1122// return: array with keys: 'mime', 'type', 'subtype', 'action', 'name'
1123// e.g. array('mime'=>'image/jpeg', 'type'=>'image', 'subtype'=>'jpeg', 'action'=>'link', 'name'=>'Image')
1124function get_mime_action_info($headers) {
1125 global $options;
1126 // check if action defined for returned Content-Type
1127 $info = array();
1128 if (preg_match('!^Content-Type:\s*(([-\w]+)/([-\w\+]+))!im', $headers, $match)) {
1129 // look for full mime type (e.g. image/jpeg) or just type (e.g. image)
1130 // match[1] = full mime type, e.g. image/jpeg
1131 // match[2] = first part, e.g. image
1132 // match[3] = last part, e.g. jpeg
1133 $info['mime'] = strtolower(trim($match[1]));
1134 $info['type'] = strtolower(trim($match[2]));
1135 $info['subtype'] = strtolower(trim($match[3]));
1136 foreach (array($info['mime'], $info['type']) as $_mime) {
1137 if (isset($options->content_type_exc[$_mime])) {
1138 $info['action'] = $options->content_type_exc[$_mime]['action'];
1139 $info['name'] = $options->content_type_exc[$_mime]['name'];
1140 break;
1141 }
1142 }
1143 }
1144 return $info;
1145}
1146
1147function remove_url_cruft($url) {
1148 // remove google analytics for the time being
1149 // regex adapted from http://navitronic.co.uk/2010/12/removing-google-analytics-cruft-from-urls/
1150 // https://gist.github.com/758177
1151 return preg_replace('/(\?|\&)utm_[a-z]+=[^\&]+/', '', $url);
1152}
1153
1154function make_substitutions($string) {
1155 if ($string == '') return $string;
1156 global $item, $effective_url;
1157 $string = str_replace('{url}', htmlspecialchars($item->get_permalink()), $string);
1158 $string = str_replace('{effective-url}', htmlspecialchars($effective_url), $string);
1159 return $string;
1160}
1161
1162function get_cache() {
1163 global $options, $valid_key;
1164 static $cache = null;
1165 if ($cache === null) {
1166 $frontendOptions = array(
1167 'lifetime' => 10*60, // cache lifetime of 10 minutes
1168 'automatic_serialization' => false,
1169 'write_control' => false,
1170 'automatic_cleaning_factor' => $options->cache_cleanup,
1171 'ignore_user_abort' => false
1172 );
1173 $backendOptions = array(
1174 'cache_dir' => ($valid_key) ? $options->cache_dir.'/rss-with-key/' : $options->cache_dir.'/rss/', // directory where to put the cache files
1175 'file_locking' => false,
1176 'read_control' => true,
1177 'read_control_type' => 'strlen',
1178 'hashed_directory_level' => $options->cache_directory_level,
1179 'hashed_directory_perm' => 0777,
1180 'cache_file_perm' => 0664,
1181 'file_name_prefix' => 'ff'
1182 );
1183 // getting a Zend_Cache_Core object
1184 $cache = Zend_Cache::factory('Core', 'File', $frontendOptions, $backendOptions);
1185 }
1186 return $cache;
1187}
1188
1189function debug($msg) {
1190 global $debug_mode;
1191 if ($debug_mode) {
1192 echo '* ',$msg,"\n";
1193 ob_flush();
1194 flush();
1195 }
1196} \ No newline at end of file
diff --git a/inc/3rdparty/makefulltextfeedHelpers.php b/inc/3rdparty/makefulltextfeedHelpers.php
new file mode 100755
index 00000000..1c11b8f6
--- /dev/null
+++ b/inc/3rdparty/makefulltextfeedHelpers.php
@@ -0,0 +1,355 @@
1<?php
2
3// Autoloading of classes allows us to include files only when they're
4// needed. If we've got a cached copy, for example, only Zend_Cache is loaded.
5function autoload($class_name) {
6 static $dir = null;
7 if ($dir === null) $dir = dirname(__FILE__).'/libraries/';
8 static $mapping = array(
9 // Include FeedCreator for RSS/Atom creation
10 'FeedWriter' => 'feedwriter/FeedWriter.php',
11 'FeedItem' => 'feedwriter/FeedItem.php',
12 // Include ContentExtractor and Readability for identifying and extracting content from URLs
13 'ContentExtractor' => 'content-extractor/ContentExtractor.php',
14 'SiteConfig' => 'content-extractor/SiteConfig.php',
15 'Readability' => 'readability/Readability.php',
16 // Include Humble HTTP Agent to allow parallel requests and response caching
17 'HumbleHttpAgent' => 'humble-http-agent/HumbleHttpAgent.php',
18 'SimplePie_HumbleHttpAgent' => 'humble-http-agent/SimplePie_HumbleHttpAgent.php',
19 'CookieJar' => 'humble-http-agent/CookieJar.php',
20 // Include Zend Cache to improve performance (cache results)
21 'Zend_Cache' => 'Zend/Cache.php',
22 // Language detect
23 'Text_LanguageDetect' => 'language-detect/LanguageDetect.php',
24 // HTML5 Lib
25 'HTML5_Parser' => 'html5/Parser.php',
26 // htmLawed - used if XSS filter is enabled (xss_filter)
27 'htmLawed' => 'htmLawed/htmLawed.php'
28 );
29 if (isset($mapping[$class_name])) {
30 debug("** Loading class $class_name ({$mapping[$class_name]})");
31 require $dir.$mapping[$class_name];
32 return true;
33 } else {
34 return false;
35 }
36}
37spl_autoload_register('autoload');
38require dirname(__FILE__).'/libraries/simplepie/autoloader.php';
39
40
41class DummySingleItemFeed {
42 public $item;
43 function __construct($url) { $this->item = new DummySingleItem($url); }
44 public function get_title() { return ''; }
45 public function get_description() { return 'Content extracted from '.$this->item->url; }
46 public function get_link() { return $this->item->url; }
47 public function get_language() { return false; }
48 public function get_image_url() { return false; }
49 public function get_items($start=0, $max=1) { return array(0=>$this->item); }
50}
51class DummySingleItem {
52 public $url;
53 function __construct($url) { $this->url = $url; }
54 public function get_permalink() { return $this->url; }
55 public function get_title() { return null; }
56 public function get_date($format='') { return false; }
57 public function get_author($key=0) { return null; }
58 public function get_authors() { return null; }
59 public function get_description() { return ''; }
60 public function get_enclosure($key=0, $prefer=null) { return null; }
61 public function get_enclosures() { return null; }
62 public function get_categories() { return null; }
63}
64
65///////////////////////////////
66// HELPER FUNCTIONS
67///////////////////////////////
68
69function url_allowed($url) {
70 global $options;
71 if (!empty($options->allowed_urls)) {
72 $allowed = false;
73 foreach ($options->allowed_urls as $allowurl) {
74 if (stristr($url, $allowurl) !== false) {
75 $allowed = true;
76 break;
77 }
78 }
79 if (!$allowed) return false;
80 } else {
81 foreach ($options->blocked_urls as $blockurl) {
82 if (stristr($url, $blockurl) !== false) {
83 return false;
84 }
85 }
86 }
87 return true;
88}
89
90//////////////////////////////////////////////
91// Convert $html to UTF8
92// (uses HTTP headers and HTML to find encoding)
93// adapted from http://stackoverflow.com/questions/910793/php-detect-encoding-and-make-everything-utf-8
94//////////////////////////////////////////////
95function convert_to_utf8($html, $header=null)
96{
97 $encoding = null;
98 if ($html || $header) {
99 if (is_array($header)) $header = implode("\n", $header);
100 if (!$header || !preg_match_all('/^Content-Type:\s+([^;]+)(?:;\s*charset=["\']?([^;"\'\n]*))?/im', $header, $match, PREG_SET_ORDER)) {
101 // error parsing the response
102 debug('Could not find Content-Type header in HTTP response');
103 } else {
104 $match = end($match); // get last matched element (in case of redirects)
105 if (isset($match[2])) $encoding = trim($match[2], "\"' \r\n\0\x0B\t");
106 }
107 // TODO: check to see if encoding is supported (can we convert it?)
108 // If it's not, result will be empty string.
109 // For now we'll check for invalid encoding types returned by some sites, e.g. 'none'
110 // Problem URL: http://facta.co.jp/blog/archives/20111026001026.html
111 if (!$encoding || $encoding == 'none') {
112 // search for encoding in HTML - only look at the first 50000 characters
113 // Why 50000? See, for example, http://www.lemonde.fr/festival-de-cannes/article/2012/05/23/deux-cretes-en-goguette-sur-la-croisette_1705732_766360.html
114 // TODO: improve this so it looks at smaller chunks first
115 $html_head = substr($html, 0, 50000);
116 if (preg_match('/^<\?xml\s+version=(?:"[^"]*"|\'[^\']*\')\s+encoding=("[^"]*"|\'[^\']*\')/s', $html_head, $match)) {
117 $encoding = trim($match[1], '"\'');
118 } elseif (preg_match('/<meta\s+http-equiv=["\']?Content-Type["\']? content=["\'][^;]+;\s*charset=["\']?([^;"\'>]+)/i', $html_head, $match)) {
119 $encoding = trim($match[1]);
120 } elseif (preg_match_all('/<meta\s+([^>]+)>/i', $html_head, $match)) {
121 foreach ($match[1] as $_test) {
122 if (preg_match('/charset=["\']?([^"\']+)/i', $_test, $_m)) {
123 $encoding = trim($_m[1]);
124 break;
125 }
126 }
127 }
128 }
129 if (isset($encoding)) $encoding = trim($encoding);
130 // trim is important here!
131 if (!$encoding || (strtolower($encoding) == 'iso-8859-1')) {
132 // replace MS Word smart qutoes
133 $trans = array();
134 $trans[chr(130)] = '&sbquo;'; // Single Low-9 Quotation Mark
135 $trans[chr(131)] = '&fnof;'; // Latin Small Letter F With Hook
136 $trans[chr(132)] = '&bdquo;'; // Double Low-9 Quotation Mark
137 $trans[chr(133)] = '&hellip;'; // Horizontal Ellipsis
138 $trans[chr(134)] = '&dagger;'; // Dagger
139 $trans[chr(135)] = '&Dagger;'; // Double Dagger
140 $trans[chr(136)] = '&circ;'; // Modifier Letter Circumflex Accent
141 $trans[chr(137)] = '&permil;'; // Per Mille Sign
142 $trans[chr(138)] = '&Scaron;'; // Latin Capital Letter S With Caron
143 $trans[chr(139)] = '&lsaquo;'; // Single Left-Pointing Angle Quotation Mark
144 $trans[chr(140)] = '&OElig;'; // Latin Capital Ligature OE
145 $trans[chr(145)] = '&lsquo;'; // Left Single Quotation Mark
146 $trans[chr(146)] = '&rsquo;'; // Right Single Quotation Mark
147 $trans[chr(147)] = '&ldquo;'; // Left Double Quotation Mark
148 $trans[chr(148)] = '&rdquo;'; // Right Double Quotation Mark
149 $trans[chr(149)] = '&bull;'; // Bullet
150 $trans[chr(150)] = '&ndash;'; // En Dash
151 $trans[chr(151)] = '&mdash;'; // Em Dash
152 $trans[chr(152)] = '&tilde;'; // Small Tilde
153 $trans[chr(153)] = '&trade;'; // Trade Mark Sign
154 $trans[chr(154)] = '&scaron;'; // Latin Small Letter S With Caron
155 $trans[chr(155)] = '&rsaquo;'; // Single Right-Pointing Angle Quotation Mark
156 $trans[chr(156)] = '&oelig;'; // Latin Small Ligature OE
157 $trans[chr(159)] = '&Yuml;'; // Latin Capital Letter Y With Diaeresis
158 $html = strtr($html, $trans);
159 }
160 if (!$encoding) {
161 debug('No character encoding found, so treating as UTF-8');
162 $encoding = 'utf-8';
163 } else {
164 debug('Character encoding: '.$encoding);
165 if (strtolower($encoding) != 'utf-8') {
166 debug('Converting to UTF-8');
167 $html = SimplePie_Misc::change_encoding($html, $encoding, 'utf-8');
168 /*
169 if (function_exists('iconv')) {
170 // iconv appears to handle certain character encodings better than mb_convert_encoding
171 $html = iconv($encoding, 'utf-8', $html);
172 } else {
173 $html = mb_convert_encoding($html, 'utf-8', $encoding);
174 }
175 */
176 }
177 }
178 }
179 return $html;
180}
181
182function makeAbsolute($base, $elem) {
183 $base = new SimplePie_IRI($base);
184 // remove '//' in URL path (used to prevent URLs from resolving properly)
185 // TODO: check if this is still the case
186 if (isset($base->path)) $base->path = preg_replace('!//+!', '/', $base->path);
187 foreach(array('a'=>'href', 'img'=>'src') as $tag => $attr) {
188 $elems = $elem->getElementsByTagName($tag);
189 for ($i = $elems->length-1; $i >= 0; $i--) {
190 $e = $elems->item($i);
191 //$e->parentNode->replaceChild($articleContent->ownerDocument->createTextNode($e->textContent), $e);
192 makeAbsoluteAttr($base, $e, $attr);
193 }
194 if (strtolower($elem->tagName) == $tag) makeAbsoluteAttr($base, $elem, $attr);
195 }
196}
197function makeAbsoluteAttr($base, $e, $attr) {
198 if ($e->hasAttribute($attr)) {
199 // Trim leading and trailing white space. I don't really like this but
200 // unfortunately it does appear on some sites. e.g. <img src=" /path/to/image.jpg" />
201 $url = trim(str_replace('%20', ' ', $e->getAttribute($attr)));
202 $url = str_replace(' ', '%20', $url);
203 if (!preg_match('!https?://!i', $url)) {
204 if ($absolute = SimplePie_IRI::absolutize($base, $url)) {
205 $e->setAttribute($attr, $absolute);
206 }
207 }
208 }
209}
210function makeAbsoluteStr($base, $url) {
211 $base = new SimplePie_IRI($base);
212 // remove '//' in URL path (causes URLs not to resolve properly)
213 if (isset($base->path)) $base->path = preg_replace('!//+!', '/', $base->path);
214 if (preg_match('!^https?://!i', $url)) {
215 // already absolute
216 return $url;
217 } else {
218 if ($absolute = SimplePie_IRI::absolutize($base, $url)) {
219 return $absolute;
220 }
221 return false;
222 }
223}
224// returns single page response, or false if not found
225function getSinglePage($item, $html, $url) {
226 global $http, $extractor;
227 debug('Looking for site config files to see if single page link exists');
228 $site_config = $extractor->buildSiteConfig($url, $html);
229 $splink = null;
230 if (!empty($site_config->single_page_link)) {
231 $splink = $site_config->single_page_link;
232 } elseif (!empty($site_config->single_page_link_in_feed)) {
233 // single page link xpath is targeted at feed
234 $splink = $site_config->single_page_link_in_feed;
235 // so let's replace HTML with feed item description
236 $html = $item->get_description();
237 }
238 if (isset($splink)) {
239 // Build DOM tree from HTML
240 $readability = new Readability($html, $url);
241 $xpath = new DOMXPath($readability->dom);
242 // Loop through single_page_link xpath expressions
243 $single_page_url = null;
244 foreach ($splink as $pattern) {
245 $elems = @$xpath->evaluate($pattern, $readability->dom);
246 if (is_string($elems)) {
247 $single_page_url = trim($elems);
248 break;
249 } elseif ($elems instanceof DOMNodeList && $elems->length > 0) {
250 foreach ($elems as $item) {
251 if ($item instanceof DOMElement && $item->hasAttribute('href')) {
252 $single_page_url = $item->getAttribute('href');
253 break 2;
254 } elseif ($item instanceof DOMAttr && $item->value) {
255 $single_page_url = $item->value;
256 break 2;
257 }
258 }
259 }
260 }
261 // If we've got URL, resolve against $url
262 if (isset($single_page_url) && ($single_page_url = makeAbsoluteStr($url, $single_page_url))) {
263 // check it's not what we have already!
264 if ($single_page_url != $url) {
265 // it's not, so let's try to fetch it...
266 $_prev_ref = $http->referer;
267 $http->referer = $single_page_url;
268 if (($response = $http->get($single_page_url, true)) && $response['status_code'] < 300) {
269 $http->referer = $_prev_ref;
270 return $response;
271 }
272 $http->referer = $_prev_ref;
273 }
274 }
275 }
276 return false;
277}
278
279// based on content-type http header, decide what to do
280// param: HTTP headers string
281// return: array with keys: 'mime', 'type', 'subtype', 'action', 'name'
282// e.g. array('mime'=>'image/jpeg', 'type'=>'image', 'subtype'=>'jpeg', 'action'=>'link', 'name'=>'Image')
283function get_mime_action_info($headers) {
284 global $options;
285 // check if action defined for returned Content-Type
286 $info = array();
287 if (preg_match('!^Content-Type:\s*(([-\w]+)/([-\w\+]+))!im', $headers, $match)) {
288 // look for full mime type (e.g. image/jpeg) or just type (e.g. image)
289 // match[1] = full mime type, e.g. image/jpeg
290 // match[2] = first part, e.g. image
291 // match[3] = last part, e.g. jpeg
292 $info['mime'] = strtolower(trim($match[1]));
293 $info['type'] = strtolower(trim($match[2]));
294 $info['subtype'] = strtolower(trim($match[3]));
295 foreach (array($info['mime'], $info['type']) as $_mime) {
296 if (isset($options->content_type_exc[$_mime])) {
297 $info['action'] = $options->content_type_exc[$_mime]['action'];
298 $info['name'] = $options->content_type_exc[$_mime]['name'];
299 break;
300 }
301 }
302 }
303 return $info;
304}
305
306function remove_url_cruft($url) {
307 // remove google analytics for the time being
308 // regex adapted from http://navitronic.co.uk/2010/12/removing-google-analytics-cruft-from-urls/
309 // https://gist.github.com/758177
310 return preg_replace('/(\?|\&)utm_[a-z]+=[^\&]+/', '', $url);
311}
312
313function make_substitutions($string) {
314 if ($string == '') return $string;
315 global $item, $effective_url;
316 $string = str_replace('{url}', htmlspecialchars($item->get_permalink()), $string);
317 $string = str_replace('{effective-url}', htmlspecialchars($effective_url), $string);
318 return $string;
319}
320
321function get_cache() {
322 global $options, $valid_key;
323 static $cache = null;
324 if ($cache === null) {
325 $frontendOptions = array(
326 'lifetime' => 10*60, // cache lifetime of 10 minutes
327 'automatic_serialization' => false,
328 'write_control' => false,
329 'automatic_cleaning_factor' => $options->cache_cleanup,
330 'ignore_user_abort' => false
331 );
332 $backendOptions = array(
333 'cache_dir' => ($valid_key) ? $options->cache_dir.'/rss-with-key/' : $options->cache_dir.'/rss/', // directory where to put the cache files
334 'file_locking' => false,
335 'read_control' => true,
336 'read_control_type' => 'strlen',
337 'hashed_directory_level' => $options->cache_directory_level,
338 'hashed_directory_perm' => 0777,
339 'cache_file_perm' => 0664,
340 'file_name_prefix' => 'ff'
341 );
342 // getting a Zend_Cache_Core object
343 $cache = Zend_Cache::factory('Core', 'File', $frontendOptions, $backendOptions);
344 }
345 return $cache;
346}
347
348function debug($msg) {
349 global $debug_mode;
350 if ($debug_mode) {
351 echo '* ',$msg,"\n";
352 ob_flush();
353 flush();
354 }
355}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-17 01:00:25 +0000