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https://codeberg.org/streams/streams.git
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516 lines
16 KiB
PHP
516 lines
16 KiB
PHP
<?php
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/**
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* @file include/bb2diaspora.php
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* @brief Some functions for BB conversions for Diaspora protocol.
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*/
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require_once("include/oembed.php");
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require_once("include/event.php");
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require_once("library/markdown.php");
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require_once("include/html2bbcode.php");
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require_once("include/bbcode.php");
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require_once("library/markdownify/markdownify.php");
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function get_bb_tag_pos($s, $name, $occurance = 1) {
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if($occurance < 1)
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$occurance = 1;
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$start_open = -1;
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for($i = 1; $i <= $occurance; $i++) {
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if( $start_open !== false)
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$start_open = strpos($s, '[' . $name, $start_open + 1); // allow [name= type tags
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}
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if( $start_open === false)
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return false;
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$start_equal = strpos($s, '=', $start_open);
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$start_close = strpos($s, ']', $start_open);
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if( $start_close === false)
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return false;
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$start_close++;
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$end_open = strpos($s, '[/' . $name . ']', $start_close);
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if( $end_open === false)
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return false;
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$res = array( 'start' => array('open' => $start_open, 'close' => $start_close),
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'end' => array('open' => $end_open, 'close' => $end_open + strlen('[/' . $name . ']')) );
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if( $start_equal !== false)
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$res['start']['equal'] = $start_equal + 1;
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return $res;
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}
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function bb_tag_preg_replace($pattern, $replace, $name, $s) {
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$string = $s;
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$occurance = 1;
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$pos = get_bb_tag_pos($string, $name, $occurance);
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while($pos !== false && $occurance < 1000) {
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$start = substr($string, 0, $pos['start']['open']);
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$subject = substr($string, $pos['start']['open'], $pos['end']['close'] - $pos['start']['open']);
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$end = substr($string, $pos['end']['close']);
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if($end === false)
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$end = '';
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$subject = preg_replace($pattern, $replace, $subject);
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$string = $start . $subject . $end;
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$occurance++;
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$pos = get_bb_tag_pos($string, $name, $occurance);
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}
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return $string;
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}
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function share_shield($m) {
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return str_replace($m[1],'!=+=+=!' . base64url_encode($m[1]) . '=+!=+!=',$m[0]);
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}
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function share_unshield($m) {
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$x = str_replace(array('!=+=+=!','=+!=+!='),array('',''),$m[1]);
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return str_replace($m[1], base64url_decode($x), $m[0]);
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}
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function diaspora_mention_callback($matches) {
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$webbie = $matches[2] . '@' . $matches[3];
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$link = '';
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if($webbie) {
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$r = q("select * from hubloc left join xchan on hubloc_hash = xchan_hash where hubloc_addr = '%s' limit 1",
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dbesc($webbie)
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);
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if(! $r) {
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$x = discover_by_webbie($webbie);
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if($x) {
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$r = q("select * from hubloc left join xchan on hubloc_hash = xchan_hash where hubloc_addr = '%s' limit 1",
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dbesc($webbie)
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);
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}
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}
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if($r)
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$link = $r[0]['xchan_url'];
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}
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if(! $link)
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$link = 'https://' . $matches[3] . '/u/' . $matches[2];
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if($r && $r[0]['hubloc_network'] === 'zot')
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return '@[zrl=' . $link . ']' . trim($matches[1]) . ((substr($matches[0],-1,1) === '+') ? '+' : '') . '[/zrl]' ;
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else
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return '@[url=' . $link . ']' . trim($matches[1]) . ((substr($matches[0],-1,1) === '+') ? '+' : '') . '[/url]' ;
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}
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/**
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* @brief
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*
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* We don't want to support a bbcode specific markdown interpreter
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* and the markdown library we have is pretty good, but provides HTML output.
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* So we'll use that to convert to HTML, then convert the HTML back to bbcode,
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* and then clean up a few Diaspora specific constructs.
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*
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* @param string $s
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* @param boolean $use_zrl default false
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* @return string
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*/
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function diaspora2bb($s, $use_zrl = false) {
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$s = str_replace("
","\r",$s);
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$s = str_replace("
\n>","",$s);
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$s = html_entity_decode($s,ENT_COMPAT,'UTF-8');
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// first try plustags
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$s = preg_replace_callback('/\@\{(.+?)\; (.+?)\@(.+?)\}\+/','diaspora_mention_callback',$s);
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$s = preg_replace_callback('/\@\{(.+?)\; (.+?)\@(.+?)\}/','diaspora_mention_callback',$s);
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// Escaping the hash tags - doesn't always seem to work
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// $s = preg_replace('/\#([^\s\#])/','\\#$1',$s);
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// This seems to work
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$s = preg_replace('/\#([^\s\#])/','#$1',$s);
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$s = Markdown($s);
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$s = str_replace("\r","",$s);
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$s = str_replace('#','#',$s);
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$s = html2bbcode($s);
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// protect the recycle symbol from turning into a tag, but without unescaping angles and naked ampersands
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$s = str_replace('♲',html_entity_decode('♲',ENT_QUOTES,'UTF-8'),$s);
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// Convert everything that looks like a link to a link
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if($use_zrl) {
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$s = str_replace(array('[img','/img]'),array('[zmg','/zmg]'),$s);
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$s = preg_replace("/([^\]\=]|^)(https?\:\/\/)([a-zA-Z0-9\:\/\-\?\&\;\.\=\_\~\#\%\$\!\+\,]+)/ism", '$1[zrl=$2$3]$2$3[/zrl]',$s);
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}
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else {
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$s = preg_replace("/([^\]\=]|^)(https?\:\/\/)([a-zA-Z0-9\:\/\-\?\&\;\.\=\_\~\#\%\$\!\+\,]+)/ism", '$1[url=$2$3]$2$3[/url]',$s);
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}
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//$s = preg_replace("/([^\]\=]|^)(https?\:\/\/)(vimeo|youtu|www\.youtube|soundcloud)([a-zA-Z0-9\:\/\-\?\&\;\.\=\_\~\#\%\$\!\+\,]+)/ism", '$1[url=$2$3$4]$2$3$4[/url]',$s);
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$s = bb_tag_preg_replace("/\[url\=?(.*?)\]https?:\/\/www.youtube.com\/watch\?v\=(.*?)\[\/url\]/ism",'[embed]https://www.youtube.com/watch?v=$2[/embed]','url',$s);
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$s = bb_tag_preg_replace("/\[url\=https?:\/\/www.youtube.com\/watch\?v\=(.*?)\].*?\[\/url\]/ism",'[embed]https://www.youtube.com/watch?v=$1[/embed]','url',$s);
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$s = bb_tag_preg_replace("/\[url\=?(.*?)\]https?:\/ \/vimeo.com\/([0-9]+)(.*?)\[\/url\]/ism",'[embed]https://vimeo.com/$2[/embed]','url',$s);
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$s = bb_tag_preg_replace("/\[url\=https?:\/\/vimeo.com\/([0-9]+)\](.*?)\[\/url\]/ism",'[embed]https://vimeo.com/$1[/embed]','url',$s);
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// remove duplicate adjacent code tags
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$s = preg_replace("/(\[code\])+(.*?)(\[\/code\])+/ism","[code]$2[/code]", $s);
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// Don't show link to full picture (until it is fixed)
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$s = scale_external_images($s, false);
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return $s;
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}
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function stripdcode_br_cb($s) {
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return '[code]' . str_replace('<br />', "\n\t", $s[1]) . '[/code]';
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}
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//////////////////////
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// The following "diaspora_ul" and "diaspora_ol" are only appropriate for the
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// pre-Markdownify conversion. If Markdownify isn't used, use the non-Markdownify
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// versions below
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//////////////////////
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/*
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function diaspora_ul($s) {
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// Replace "[*]" followed by any number (including zero) of
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// spaces by "* " to match Diaspora's list format
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if( strpos($s[0], "[list]") === 0 )
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return '<ul class="listbullet" style="list-style-type: circle;">' . preg_replace("/\[\*\]( *)/", "* ", $s[1]) . '</ul>';
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elseif( strpos($s[0], "[ul]") === 0 )
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return '<ul class="listbullet" style="list-style-type: circle;">' . preg_replace("/\[\*\]( *)/", "* ", $s[1]) . '</ul>';
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else
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return $s[0];
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}
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function diaspora_ol($s) {
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// A hack: Diaspora will create a properly-numbered ordered list even
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// if you use '1.' for each element of the list, like:
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// 1. First element
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// 1. Second element
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// 1. Third element
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if( strpos($s[0], "[list=1]") === 0 )
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return '<ul class="listdecimal" style="list-style-type: decimal;">' . preg_replace("/\[\*\]( *)/", "1. ", $s[1]) . '</ul>';
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elseif( strpos($s[0], "[list=i]") === 0 )
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return '<ul class="listlowerroman" style="list-style-type: lower-roman;">' . preg_replace("/\[\*\]( *)/", "1. ", $s[1]) . '</ul>';
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elseif( strpos($s[0], "[list=I]") === 0 )
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return '<ul class="listupperroman" style="list-style-type: upper-roman;">' . preg_replace("/\[\*\]( *)/", "1. ", $s[1]) . '</ul>';
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elseif( strpos($s[0], "[list=a]") === 0 )
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return '<ul class="listloweralpha" style="list-style-type: lower-alpha;">' . preg_replace("/\[\*\]( *)/", "1. ", $s[1]) . '</ul>';
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elseif( strpos($s[0], "[list=A]") === 0 )
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return '<ul class="listupperalpha" style="list-style-type: upper-alpha;">' . preg_replace("/\[\*\]( *)/", "1. ", $s[1]) . '</ul>';
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elseif( strpos($s[0], "[ol]") === 0 )
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return '<ul class="listdecimal" style="list-style-type: decimal;">' . preg_replace("/\[\*\]( *)/", "1. ", $s[1]) . '</ul>';
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else
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return $s[0];
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}
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*/
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//////////////////////
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// Non-Markdownify versions of "diaspora_ol" and "diaspora_ul"
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//////////////////////
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/**
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* @brief
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*
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* Replace "[\\*]" followed by any number (including zero) of
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* spaces by "* " to match Diaspora's list format.
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*
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* @param string $s
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* @return string
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*/
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function diaspora_ul($s) {
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return preg_replace("/\[\\\\\*\]( *)/", "* ", $s[1]);
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}
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/**
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* @brief
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*
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* A hack: Diaspora will create a properly-numbered ordered list even
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* if you use '1.' for each element of the list, like:
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* \code
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* 1. First element
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* 1. Second element
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* 1. Third element
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* \endcode
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* @param string $s
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* @return string
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*/
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function diaspora_ol($s) {
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return preg_replace("/\[\\\\\*\]( *)/", "1. ", $s[1]);
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}
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function bb2dmention_callback($match) {
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$r = q("select xchan_addr from xchan where xchan_url = '%s'",
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dbesc($match[2])
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);
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if($r)
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return '@{' . $match[3] . ' ; ' . $r[0]['xchan_addr'] . '}';
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return '@' . $match[3];
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}
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function bb2diaspora_itemwallwall(&$item) {
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// We will provide wallwall (embedded author on the Diaspora side) if
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// 1. It is a wall-to-wall post
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// 2. A comment arrived which has no Diaspora signature info
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$wallwall = false;
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$author_exists = true;
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if(! array_key_exists('author',$item)) {
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$author_exists = false;
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logger('bb2diaspora_itemwallwall: no author');
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$r = q("select * from xchan where xchan_hash = '%s' limit 1",
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dbesc($item['author_xchan'])
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);
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if($r)
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$item['author'] = $r[0];
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}
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$has_meta = false;
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if($item['diaspora_meta'] || get_iconfig($item,'diaspora','fields'))
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$has_meta = true;
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if($item['author_xchan'] != $item['owner_xchan']) {
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if($item['mid'] == $item['parent_mid'])
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$wallwall = true;
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else {
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if(! $has_meta) {
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$wallwall = true;
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}
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}
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}
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if(($wallwall) && (is_array($item['author'])) && $item['author']['xchan_url'] && $item['author']['xchan_name'] && $item['author']['xchan_photo_m']) {
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logger('bb2diaspora_itemwallwall: wall to wall post',LOGGER_DEBUG);
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// post will come across with the owner's identity. Throw a preamble onto the post to indicate the true author.
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$item['body'] = "\n\n"
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. '[img]' . $item['author']['xchan_photo_m'] . '[/img]'
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. '[url=' . $item['author']['xchan_url'] . ']' . $item['author']['xchan_name'] . '[/url]' . "\n\n"
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. $item['body'];
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}
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// $item['author'] might cause a surprise further down the line if it wasn't expected to be here.
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if(! $author_exists)
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unset($item['author']);
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}
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function bb2diaspora_itembody($item, $force_update = false) {
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if(! get_iconfig($item,'diaspora','fields')) {
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force_update = true;
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}
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$matches = array();
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if(($item['diaspora_meta']) && (! $force_update)) {
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$diaspora_meta = json_decode($item['diaspora_meta'],true);
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if($diaspora_meta) {
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if(array_key_exists('iv',$diaspora_meta)) {
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$key = get_config('system','prvkey');
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$meta = json_decode(crypto_unencapsulate($diaspora_meta,$key),true);
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}
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else {
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$meta = $diaspora_meta;
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}
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if($meta) {
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logger('bb2diaspora_itembody: cached ');
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$newitem = $item;
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$newitem['body'] = $meta['body'];
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return $newitem['body'];
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}
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}
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}
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create_export_photo_body($item);
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$newitem = $item;
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if(array_key_exists('item_obscured',$item) && intval($item['item_obscured'])) {
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$key = get_config('system','prvkey');
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$b = json_decode($item['body'],true);
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// if called from diaspora_process_outbound, this decoding has already been done.
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// Everything else that calls us will not yet be decoded.
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if($b && is_array($b) && array_key_exists('iv',$b)) {
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$newitem['title'] = (($item['title']) ? crypto_unencapsulate(json_decode($item['title'],true),$key) : '');
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$newitem['body'] = (($item['body']) ? crypto_unencapsulate(json_decode($item['body'],true),$key) : '');
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}
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}
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bb2diaspora_itemwallwall($newitem);
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$title = $newitem['title'];
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$body = preg_replace('/\#\^http/i', 'http', $newitem['body']);
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// protect tags and mentions from hijacking
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if(intval(get_pconfig($item['uid'],'system','prevent_tag_hijacking'))) {
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$new_tag = html_entity_decode('⋕',ENT_COMPAT,'UTF-8');
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$new_mention = html_entity_decode('＠',ENT_COMPAT,'UTF-8');
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// #-tags
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$body = preg_replace('/\#\[url/i', $new_tag . '[url', $body);
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$body = preg_replace('/\#\[zrl/i', $new_tag . '[zrl', $body);
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// @-mentions
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$body = preg_replace('/\@\!?\[url/i', $new_mention . '[url', $body);
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$body = preg_replace('/\@\!?\[zrl/i', $new_mention . '[zrl', $body);
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}
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// remove multiple newlines
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do {
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$oldbody = $body;
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$body = str_replace("\n\n\n", "\n\n", $body);
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} while ($oldbody != $body);
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$body = bb2diaspora($body);
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if(strlen($title))
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$body = "## " . $title . "\n\n" . $body;
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if($item['attach']) {
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$cnt = preg_match_all('/href=\"(.*?)\"(.*?)title=\"(.*?)\"/ism', $item['attach'], $matches, PREG_SET_ORDER);
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if($cnt) {
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$body .= "\n" . t('Attachments:') . "\n";
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foreach($matches as $mtch) {
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$body .= '[' . $mtch[3] . '](' . $mtch[1] . ')' . "\n";
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}
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}
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}
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// logger('bb2diaspora_itembody : ' . $body, LOGGER_DATA);
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return html_entity_decode($body);
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}
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function bb2diaspora($Text,$preserve_nl = false, $fordiaspora = true) {
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// Re-enabling the converter again.
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// The bbcode parser now handles youtube-links (and the other stuff) correctly.
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// Additionally the html code is now fixed so that lists are now working.
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/*
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* Transform #tags, strip off the [url] and replace spaces with underscore
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*/
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$Text = preg_replace_callback('/#\[([zu])rl\=(\w+.*?)\](\w+.*?)\[\/[(zu)]rl\]/i', create_function('$match',
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'return \'#\'. str_replace(\' \', \'_\', $match[3]);'
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), $Text);
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$Text = preg_replace('/#\^\[([zu])rl\=(\w+.*?)\](\w+.*?)\[\/([zu])rl\]/i', '[$1rl=$2]$3[/$4rl]', $Text);
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$Text = preg_replace_callback('/\@\!?\[([zu])rl\=(\w+.*?)\](\w+.*?)\[\/([zu])rl\]/i', 'bb2dmention_callback', $Text);
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// Converting images with size parameters to simple images. Markdown doesn't know it.
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$Text = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism", '[img]$3[/img]', $Text);
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// the following was added on 10-January-2012 due to an inability of Diaspora's
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// new javascript markdown processor to handle links with images as the link "text"
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// It is not optimal and may be removed if this ability is restored in the future
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//if ($fordiaspora)
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// $Text = preg_replace("/\[url\=([^\[\]]*)\]\s*\[img\](.*?)\[\/img\]\s*\[\/url\]/ism",
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// "[url]$1[/url]\n[img]$2[/img]", $Text);
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|
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// Convert it to HTML - don't try oembed
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$Text = bbcode($Text, $preserve_nl, false);
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|
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|
// Markdownify does not preserve previously escaped html entities such as <> and &.
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|
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$Text = str_replace(array('<','>','&'),array('&_lt_;','&_gt_;','&_amp_;'),$Text);
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|
|
|
// Now convert HTML to Markdown
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|
$md = new Markdownify(false, false, false);
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|
$Text = $md->parseString($Text);
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|
|
|
// It also adds backslashes to our attempt at getting around the html entity preservation for some weird reason.
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|
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$Text = str_replace(array('&\\_lt\\_;','&\\_gt\\_;','&\\_amp\\_;'),array('<','>','&'),$Text);
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|
|
|
// If the text going into bbcode() has a plain URL in it, i.e.
|
|
// with no [url] tags around it, it will come out of parseString()
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|
// looking like: <http://url.com>, which gets removed by strip_tags().
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|
// So take off the angle brackets of any such URL
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|
$Text = preg_replace("/<http(.*?)>/is", "http$1", $Text);
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|
|
|
// Remove empty zrl links
|
|
$Text = preg_replace("/\[zrl\=\].*?\[\/zrl\]/is", "", $Text);
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|
|
|
// Remove all unconverted tags
|
|
$Text = strip_tags($Text);
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|
|
|
// Remove any leading or trailing whitespace, as this will mess up
|
|
// the Diaspora signature verification and cause the item to disappear
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|
|
|
$Text = trim($Text);
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|
|
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call_hooks('bb2diaspora',$Text);
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|
|
|
return $Text;
|
|
}
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|
|
|
function unescape_underscores_in_links($m) {
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|
$y = str_replace('\\_','_', $m[2]);
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|
return('[' . $m[1] . '](' . $y . ')');
|
|
}
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|
|
|
function format_event_diaspora($ev) {
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|
|
|
$a = get_app();
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|
|
|
if(! ((is_array($ev)) && count($ev)))
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|
return '';
|
|
|
|
$bd_format = t('l F d, Y \@ g:i A') ; // Friday January 18, 2011 @ 8 AM
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|
|
|
$o = t('$Projectname event notification:') . "\n";
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|
|
|
$o .= '**' . (($ev['summary']) ? bb2diaspora($ev['summary']) : bb2diaspora($ev['desc'])) . '**' . "\n";
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|
|
|
$o .= t('Starts:') . ' ' . '['
|
|
. (($ev['adjust']) ? day_translate(datetime_convert('UTC', 'UTC',
|
|
$ev['start'] , $bd_format ))
|
|
: day_translate(datetime_convert('UTC', 'UTC',
|
|
$ev['start'] , $bd_format)))
|
|
. '](' . z_root() . '/localtime/?f=&time=' . urlencode(datetime_convert('UTC','UTC',$ev['start'])) . ")\n";
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|
|
|
if(! $ev['nofinish'])
|
|
$o .= t('Finishes:') . ' ' . '['
|
|
. (($ev['adjust']) ? day_translate(datetime_convert('UTC', 'UTC',
|
|
$ev['finish'] , $bd_format ))
|
|
: day_translate(datetime_convert('UTC', 'UTC',
|
|
$ev['finish'] , $bd_format )))
|
|
. '](' . z_root() . '/localtime/?f=&time=' . urlencode(datetime_convert('UTC','UTC',$ev['finish'])) . ")\n";
|
|
|
|
if(strlen($ev['location']))
|
|
$o .= t('Location:') . bb2diaspora($ev['location'])
|
|
. "\n";
|
|
|
|
$o .= "\n";
|
|
|
|
return $o;
|
|
}
|