1
0
mirror of https://github.com/vichan-devel/vichan.git synced 2024-11-28 01:10:51 +01:00
vichan/inc/functions.php
2010-11-30 20:00:48 +11:00

582 lines
20 KiB
PHP
Raw Blame History

This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

<?php
function sprintf3($str, $vars, $delim = '%') {
$replaces = array();
foreach($vars as $k => $v) {
$replaces[$delim . $k . $delim] = $v;
}
return str_replace(array_keys($replaces),
array_values($replaces), $str);
}
function sql_open() {
global $sql;
$sql = @mysql_connect(MY_SERVER, MY_USER, MY_PASSWORD) or error('Database error.');
@mysql_select_db(MY_DATABASE, $sql) or error('Database error.');
}
function sql_close() {
global $sql;
@mysql_close($sql);
}
function mysql_safe_array(&$array) {
foreach($array as &$item) {
$item = mysql_real_escape_string($item);
}
}
function post($post, $OP) {
global $sql, $board;
if($OP) {
mysql_query(
sprintf("INSERT INTO `posts` VALUES ( NULL, '%d', NULL, '%s', '%s', '%s', '%s', '%s', '%d', '%d', '%s', '%d', '%d', '%s', '%d', '%d', '%d', '%s', '%s', '%s', '%s' )",
$board['id'],
$post['subject'],
$post['email'],
$post['name'],
$post['trip'],
$post['body'],
time(),
time(),
$post['thumb'],
$post['thumbwidth'],
$post['thumbheight'],
$post['file'],
$post['width'],
$post['height'],
$post['filesize'],
$post['filename'],
$post['filehash'],
$post['password'],
mysql_real_escape_string($_SERVER['REMOTE_ADDR'])
), $sql) or error(mysql_error($sql));
return mysql_insert_id($sql);
} else {
mysql_query(
sprintf("INSERT INTO `posts` VALUES ( NULL, '%d', '%d', '%s', '%s', '%s', '%s', '%s', '%d', '%d', '%s', '%d', '%d', '%s', '%d', '%d', '%d', '%s', '%s', '%s', '%s' )",
$board['id'],
$post['thread'],
$post['subject'],
$post['email'],
$post['name'],
$post['trip'],
$post['body'],
time(),
time(),
$post['has_file']?$post['thumb']:null,
$post['has_file']?$post['thumbwidth']:null,
$post['has_file']?$post['thumbheight']:null,
$post['has_file']?$post['file']:null,
$post['has_file']?$post['width']:null,
$post['has_file']?$post['height']:null,
$post['has_file']?$post['filesize']:null,
$post['has_file']?$post['filename']:null,
$post['has_file']?$post['filehash']:null,
$post['password'],
mysql_real_escape_string($_SERVER['REMOTE_ADDR'])
), $sql) or error(mysql_error($sql));
return mysql_insert_id($sql);
}
}
function index($page) {
global $sql, $board;
$body = '';
$offset = round($page*THREADS_PER_PAGE-THREADS_PER_PAGE);
sql_open();
$query = mysql_query(sprintf(
"SELECT * FROM `posts` WHERE `thread` IS NULL AND `board` = '%d' ORDER BY `bump` DESC LIMIT %d,%d",
$board['id'],
$offset,
THREADS_PER_PAGE
), $sql) or error(mysql_error($sql));
if(mysql_num_rows($query) < 1 && $page > 1) return false;
while($th = mysql_fetch_array($query)) {
$thread = new Thread($th['id'], $th['subject'], $th['email'], $th['name'], $th['trip'], $th['body'], $th['time'], $th['thumb'], $th['thumbwidth'], $th['thumbheight'], $th['file'], $th['filewidth'], $th['fileheight'], $th['filesize'], $th['filename']);
$newposts = mysql_query(sprintf(
"SELECT `id`, `subject`, `email`, `name`, `trip`, `body`, `time`, `thumb`, `thumbwidth`, `thumbheight`, `file`, `filewidth`, `fileheight`, `filesize`, `filename` FROM `posts` WHERE `thread` = '%s' ORDER BY `time` DESC LIMIT %d",
$th['id'],
THREADS_PREVIEW
), $sql) or error(mysql_error($sql));
if(mysql_num_rows($newposts) == THREADS_PREVIEW) {
$count_query = mysql_query(sprintf(
"SELECT COUNT(`id`) as `num` FROM `posts` WHERE `thread` = '%s'",
$th['id']
), $sql) or error(mysql_error($sql));
$count = mysql_fetch_array($count_query);
$omitted = $count['num'] - THREADS_PREVIEW;
$thread->omitted = $omitted;
mysql_free_result($count_query);
unset($count);
unset($omitted);
}
while($po = mysql_fetch_array($newposts)) {
$thread->add(new Post($po['id'], $th['id'], $po['subject'], $po['email'], $po['name'], $po['trip'], $po['body'], $po['time'], $po['thumb'], $po['thumbwidth'], $po['thumbheight'], $po['file'], $po['filewidth'], $po['fileheight'], $po['filesize'], $po['filename']));
}
mysql_free_result($newposts);
$thread->posts = array_reverse($thread->posts);
$body .= $thread->build(true);
}
mysql_free_result($query);
return Array('button'=>BUTTON_NEWTOPIC, 'board'=>$board, 'body'=>$body, 'post_url' => POST_URL, 'index' => ROOT);
}
function buildIndex() {
global $sql, $board;
sql_open();
$res = mysql_query("SELECT COUNT(`id`) as `num` FROM `posts` WHERE `thread` IS NULL", $sql) or error(mysql_error($sql));
$arr = mysql_fetch_array($res);
$count = floor((THREADS_PER_PAGE + $arr['num'] - 1) / THREADS_PER_PAGE);
$pages = Array();
for($x=0;$x<$count && $x<MAX_PAGES;$x++) {
$pages[] = Array('num' => $x+1, 'link' => $x==0 ? ROOT . $board['dir'] . FILE_INDEX : ROOT . $board['dir'] . sprintf(FILE_PAGE, $x+1));
}
mysql_free_result($res);
unset($arr);
unset($count);
$page = 1;
while($page <= MAX_PAGES && $content = index($page)) {
$filename = $board['dir'] . ($page==1 ? FILE_INDEX : sprintf(FILE_PAGE, $page));
if(file_exists($filename)) $md5 = md5_file($filename);
$content['pages'] = $pages;
@file_put_contents($filename, Element('index.html', $content)) or error("Couldn't write to file.");
if(isset($md5) && $md5 == md5_file($filename)) {
break;
}
$page++;
}
if($page < MAX_PAGES) {
for(;$page<=MAX_PAGES;$page++) {
$filename = $page==1 ? FILE_INDEX : sprintf(FILE_PAGE, $page);
@unlink($filename);
}
}
}
function markup(&$body) {
global $sql;
if(AUTO_UNICODE) {
$body = str_replace('...', '…', $body);
$body = str_replace('<--', '←', $body);
// En and em- dashes are rendered exactly the same in
// most monospace fonts (they look the same in code
// editors).
$body = str_replace('---', '—', $body); // em dash
$body = str_replace('--', '', $body); // en dash
}
$body = utf8tohtml($body, true);
// Cites
if(preg_match_all('/(^|\s)&gt;&gt;([0-9]+?)(\s|$)/', $body, $cites)) {
$previousPosition = 0;
$temp = '';
sql_open();
for($index=0;$index<count($cites[0]);$index++) {
$cite = $cites[2][$index];
$whitespace = Array(
strlen($cites[1][$index]),
strlen($cites[3][$index]),
);
$result = mysql_query(sprintf("SELECT `thread`,`id` FROM `posts` WHERE `id` = '%d'", $cite), $sql);
if($post = mysql_fetch_array($result)) {
$replacement = '<a onclick="highlightReply(\''.$cite.'\');" href="' . ROOT . $board['dir'] . DIR_RES . ($post['thread']?$post['thread']:$post['id']) . '.html#' . $cite . '">&gt;&gt;' . $cite . '</a>';
} else {
$replacement = "&gt;&gt;{$cite}";
}
mysql_free_result($result);
// Find the position of the cite
$position = strpos($body, $cites[0][$index]);
// Replace the found string with "xxxx[...]". (allows duplicate tags). Keeps whitespace.
$body = substr_replace($body, str_repeat('x', strlen($cites[0][$index]) - $whitespace[0] - $whitespace[1]), $position + $whitespace[0], strlen($cites[0][$index]) - $whitespace[0] - $whitespace[1]);
$temp .= substr($body, $previousPosition, $position-$previousPosition) . $cites[1][$index] . $replacement . $cites[3][$index];
$previousPosition = $position+strlen($cites[0][$index]);
}
// The rest
$temp .= substr($body, $previousPosition);
$body = $temp;
}
$body = str_replace("\r", '', $body);
if(MARKUP_URLS)
$body = preg_replace(URL_REGEX, "<a href=\"$0\">$0</a>", $body);
$body = preg_replace("/(^|\n)([\s]+)?(&gt;)([^\n]+)?($|\n)/m", '$1$2<span class="quote">$3$4</span>$5', $body);
if(WIKI_MARKUP) {
$body = preg_replace("/(^|\n)==(.+?)==\n?/m", "<h2>$2</h2>", $body);
$body = preg_replace("/'''(.+?)'''/m", "<strong>$1</strong>", $body);
$body = preg_replace("/''(.+?)''/m", "<em>$1</em>", $body);
}
$body = preg_replace("/\n/", '<br/>', $body);
}
function utf8tohtml($utf8, $encodeTags=true) {
$result = '';
for ($i = 0; $i < strlen($utf8); $i++) {
$char = $utf8[$i];
$ascii = ord($char);
if ($ascii < 128) {
// one-byte character
$result .= ($encodeTags) ? htmlentities($char) : $char;
} else if ($ascii < 192) {
// non-utf8 character or not a start byte
} else if ($ascii < 224) {
// two-byte character
$result .= htmlentities(substr($utf8, $i, 2), ENT_QUOTES, 'UTF-8');
$i++;
} else if ($ascii < 240) {
// three-byte character
$ascii1 = ord($utf8[$i+1]);
$ascii2 = ord($utf8[$i+2]);
$unicode = (15 & $ascii) * 4096 +
(63 & $ascii1) * 64 +
(63 & $ascii2);
$result .= "&#$unicode;";
$i += 2;
} else if ($ascii < 248) {
// four-byte character
$ascii1 = ord($utf8[$i+1]);
$ascii2 = ord($utf8[$i+2]);
$ascii3 = ord($utf8[$i+3]);
$unicode = (15 & $ascii) * 262144 +
(63 & $ascii1) * 4096 +
(63 & $ascii2) * 64 +
(63 & $ascii3);
$result .= "&#$unicode;";
$i += 3;
}
}
return $result;
}
function buildThread($id) {
global $sql, $board;
$id = round($id);
$query = mysql_query(sprintf(
"SELECT `id`,`thread`,`subject`,`name`,`email`,`trip`,`body`,`time`,`thumb`,`thumbwidth`,`thumbheight`,`file`,`filewidth`,`fileheight`,`filesize`,`filename` FROM `posts` WHERE (`thread` IS NULL AND `id` = '%s') OR `thread` = '%s' ORDER BY `thread`,`time`",
$id,
$id
), $sql) or error(mysql_error($sql));
while($post = mysql_fetch_array($query)) {
if(!isset($thread)) {
$thread = new Thread($post['id'], $post['subject'], $post['email'], $post['name'], $post['trip'], $post['body'], $post['time'], $post['thumb'], $post['thumbwidth'], $post['thumbheight'], $post['file'], $post['filewidth'], $post['fileheight'], $post['filesize'], $post['filename'], false);
} else {
$thread->add(new Post($post['id'], $thread->id, $post['subject'], $post['email'], $post['name'], $post['trip'], $post['body'], $post['time'], $post['thumb'], $post['thumbwidth'], $post['thumbheight'], $post['file'], $post['filewidth'], $post['fileheight'], $post['filesize'], $post['filename']));
}
@file_put_contents($board['dir'] . DIR_RES . $id . '.html', Element('thread.html', Array('button'=>BUTTON_REPLY, 'board'=>$board, 'body'=>$thread->build(), 'post_url' => POST_URL, 'index' => ROOT, 'id' => $id))) or error("Couldn't write to file.");
}
mysql_free_result($query);
}
// A lot of the bellow of from BBSchan (An old project by savetheinternet)
function generate_tripcode ( $name, $length = 10 ) {
$name = stripslashes ( $name );
$t = explode('#', $name);
$nameo = $t[0];
if ( isset ( $t[1] ) || isset ( $t[2] ) ) {
$trip = ( ( strlen ( $t[1] ) > 0 ) ? $t[1] : $t[2] );
if ( ( function_exists ( 'mb_convert_encoding' ) ) ) {
# mb_substitute_character('none');
$recoded_cap = mb_convert_encoding ( $trip, 'Shift_JIS', 'UTF-8' );
}
$trip = ( ( ! empty ( $recoded_cap ) ) ? $recoded_cap : $trip );
$salt = substr ( $trip.'H.', 1, 2 );
$salt = preg_replace ( '/[^\.-z]/', '.', $salt );
$salt = strtr ( $salt, ':;<=>?@[\]^_`', 'ABCDEFGabcdef' );
if ( isset ( $t[2] ) ) {
// secure
$trip = '!!' . substr ( crypt ( $trip, '@#$%^&*()' ), ( -1 * $length ) );
} else {
// insecure
$trip = '!' . substr ( crypt ( $trip, $salt ), ( -1 * $length ) );
}
}
if ( isset ( $trip ) ) {
return array ( $nameo, $trip );
} else {
return array ( $nameo );
}
}
// Highest common factor
function hcf($a, $b){
$gcd = 1;
if ($a>$b) {
$a = $a+$b;
$b = $a-$b;
$a = $a-$b;
}
if ($b==(round($b/$a))*$a)
$gcd=$a;
else {
for($i=round($a/2);$i;$i--) {
if ($a == round($a/$i)*$i && $b == round($b/$i)*$i) {
$gcd = $i;
$i = false;
}
}
}
return $gcd;
}
function fraction($numerator, $denominator, $sep) {
$gcf = hcf($numerator, $denominator);
$numerator = $numerator / $gcf;
$denominator = $denominator / $gcf;
return "{$numerator}{$sep}{$denominator}";
}
/*********************************************/
/* Fonction: imagecreatefrombmp */
/* Author: DHKold */
/* Contact: admin@dhkold.com */
/* Date: The 15th of June 2005 */
/* Version: 2.0B */
/*********************************************/
function imagecreatefrombmp($filename) {
if (! $f1 = fopen($filename,"rb")) return FALSE;
$FILE = unpack("vfile_type/Vfile_size/Vreserved/Vbitmap_offset", fread($f1,14));
if ($FILE['file_type'] != 19778) return FALSE;
$BMP = unpack('Vheader_size/Vwidth/Vheight/vplanes/vbits_per_pixel'.
'/Vcompression/Vsize_bitmap/Vhoriz_resolution'.
'/Vvert_resolution/Vcolors_used/Vcolors_important', fread($f1,40));
$BMP['colors'] = pow(2,$BMP['bits_per_pixel']);
if ($BMP['size_bitmap'] == 0) $BMP['size_bitmap'] = $FILE['file_size'] - $FILE['bitmap_offset'];
$BMP['bytes_per_pixel'] = $BMP['bits_per_pixel']/8;
$BMP['bytes_per_pixel2'] = ceil($BMP['bytes_per_pixel']);
$BMP['decal'] = ($BMP['width']*$BMP['bytes_per_pixel']/4);
$BMP['decal'] -= floor($BMP['width']*$BMP['bytes_per_pixel']/4);
$BMP['decal'] = 4-(4*$BMP['decal']);
if ($BMP['decal'] == 4) $BMP['decal'] = 0;
$PALETTE = array();
if ($BMP['colors'] < 16777216)
{
$PALETTE = unpack('V'.$BMP['colors'], fread($f1,$BMP['colors']*4));
}
$IMG = fread($f1,$BMP['size_bitmap']);
$VIDE = chr(0);
$res = imagecreatetruecolor($BMP['width'],$BMP['height']);
$P = 0;
$Y = $BMP['height']-1;
while ($Y >= 0)
{
$X=0;
while ($X < $BMP['width'])
{
if ($BMP['bits_per_pixel'] == 24)
$COLOR = unpack("V",substr($IMG,$P,3).$VIDE);
elseif ($BMP['bits_per_pixel'] == 16)
{
$COLOR = unpack("n",substr($IMG,$P,2));
$COLOR[1] = $PALETTE[$COLOR[1]+1];
}
elseif ($BMP['bits_per_pixel'] == 8)
{
$COLOR = unpack("n",$VIDE.substr($IMG,$P,1));
$COLOR[1] = $PALETTE[$COLOR[1]+1];
}
elseif ($BMP['bits_per_pixel'] == 4)
{
$COLOR = unpack("n",$VIDE.substr($IMG,floor($P),1));
if (($P*2)%2 == 0) $COLOR[1] = ($COLOR[1] >> 4) ; else $COLOR[1] = ($COLOR[1] & 0x0F);
$COLOR[1] = $PALETTE[$COLOR[1]+1];
}
elseif ($BMP['bits_per_pixel'] == 1)
{
$COLOR = unpack("n",$VIDE.substr($IMG,floor($P),1));
if (($P*8)%8 == 0) $COLOR[1] = $COLOR[1] >>7;
elseif (($P*8)%8 == 1) $COLOR[1] = ($COLOR[1] & 0x40)>>6;
elseif (($P*8)%8 == 2) $COLOR[1] = ($COLOR[1] & 0x20)>>5;
elseif (($P*8)%8 == 3) $COLOR[1] = ($COLOR[1] & 0x10)>>4;
elseif (($P*8)%8 == 4) $COLOR[1] = ($COLOR[1] & 0x8)>>3;
elseif (($P*8)%8 == 5) $COLOR[1] = ($COLOR[1] & 0x4)>>2;
elseif (($P*8)%8 == 6) $COLOR[1] = ($COLOR[1] & 0x2)>>1;
elseif (($P*8)%8 == 7) $COLOR[1] = ($COLOR[1] & 0x1);
$COLOR[1] = $PALETTE[$COLOR[1]+1];
}
else
return FALSE;
imagesetpixel($res,$X,$Y,$COLOR[1]);
$X++;
$P += $BMP['bytes_per_pixel'];
}
$Y--;
$P+=$BMP['decal'];
}
fclose($f1);
return $res;
}
function createimage($type, $source_pic) {
$image = false;
switch($type) {
case 'jpg':
case 'jpeg':
if(!$image = @imagecreatefromjpeg($source_pic)) {
unlink($source_pic);
error(ERR_INVALIDIMG);
}
break;
case 'png':
if(!$image = @imagecreatefrompng($source_pic)) {
unlink($source_pic);
error(ERR_INVALIDIMG);
}
break;
case 'gif':
if(!$image = @imagecreatefromgif($source_pic)) {
unlink($source_pic);
error(ERR_INVALIDIMG);
}
break;
case 'bmp':
if(!$image = @imagecreatefrombmp($source_pic)) {
unlink($source_pic);
error(ERR_INVALIDIMG);
}
break;
default:
error('Unknwon file extension.');
}
return $image;
}
function resize($src, $width, $height, $destination_pic, $max_width, $max_height) {
$return = Array();
$x_ratio = $max_width / $width;
$y_ratio = $max_height / $height;
if(($width <= $max_width) && ($height <= $max_height)) {
$tn_width = $width;
$tn_height = $height;
} elseif (($x_ratio * $height) < $max_height) {
$tn_height = ceil($x_ratio * $height);
$tn_width = $max_width;
} else {
$tn_width = ceil($y_ratio * $width);
$tn_height = $max_height;
}
$return['width'] = $tn_width;
$return['height'] = $tn_height;
$tmp = imagecreatetruecolor($tn_width, $tn_height);
imagecolortransparent($tmp, imagecolorallocatealpha($tmp, 0, 0, 0, 0));
imagealphablending($tmp, false);
imagesavealpha($tmp, true);
imagecopyresampled($tmp, $src, 0, 0, 0, 0, $tn_width, $tn_height, $width, $height);
imagepng($tmp, $destination_pic, 4);
imagedestroy($src);
imagedestroy($tmp);
return $return;
}
function imagebmp(&$img, $filename='') {
$widthOrig = imagesx($img);
$widthFloor = ((floor($widthOrig/16))*16);
$widthCeil = ((ceil($widthOrig/16))*16);
$height = imagesy($img);
$size = ($widthCeil*$height*3)+54;
// Bitmap File Header
$result = 'BM'; // header (2b)
$result .= int_to_dword($size); // size of file (4b)
$result .= int_to_dword(0); // reserved (4b)
$result .= int_to_dword(54); // byte location in the file which is first byte of IMAGE (4b)
// Bitmap Info Header
$result .= int_to_dword(40); // Size of BITMAPINFOHEADER (4b)
$result .= int_to_dword($widthCeil); // width of bitmap (4b)
$result .= int_to_dword($height); // height of bitmap (4b)
$result .= int_to_word(1); // biPlanes = 1 (2b)
$result .= int_to_word(24); // biBitCount = {1 (mono) or 4 (16 clr ) or 8 (256 clr) or 24 (16 Mil)} (2b
$result .= int_to_dword(0); // RLE COMPRESSION (4b)
$result .= int_to_dword(0); // width x height (4b)
$result .= int_to_dword(0); // biXPelsPerMeter (4b)
$result .= int_to_dword(0); // biYPelsPerMeter (4b)
$result .= int_to_dword(0); // Number of palettes used (4b)
$result .= int_to_dword(0); // Number of important colour (4b)
// is faster than chr()
$arrChr = array();
for($i=0; $i<256; $i++){
$arrChr[$i] = chr($i);
}
// creates image data
$bgfillcolor = array('red'=>0, 'green'=>0, 'blue'=>0);
// bottom to top - left to right - attention blue green red !!!
$y=$height-1;
for ($y2=0; $y2<$height; $y2++) {
for ($x=0; $x<$widthFloor; ) {
$rgb = imagecolorsforindex($img, imagecolorat($img, $x++, $y));
$result .= $arrChr[$rgb['blue']].$arrChr[$rgb['green']].$arrChr[$rgb['red']];
$rgb = imagecolorsforindex($img, imagecolorat($img, $x++, $y));
$result .= $arrChr[$rgb['blue']].$arrChr[$rgb['green']].$arrChr[$rgb['red']];
$rgb = imagecolorsforindex($img, imagecolorat($img, $x++, $y));
$result .= $arrChr[$rgb['blue']].$arrChr[$rgb['green']].$arrChr[$rgb['red']];
$rgb = imagecolorsforindex($img, imagecolorat($img, $x++, $y));
$result .= $arrChr[$rgb['blue']].$arrChr[$rgb['green']].$arrChr[$rgb['red']];
$rgb = imagecolorsforindex($img, imagecolorat($img, $x++, $y));
$result .= $arrChr[$rgb['blue']].$arrChr[$rgb['green']].$arrChr[$rgb['red']];
$rgb = imagecolorsforindex($img, imagecolorat($img, $x++, $y));
$result .= $arrChr[$rgb['blue']].$arrChr[$rgb['green']].$arrChr[$rgb['red']];
$rgb = imagecolorsforindex($img, imagecolorat($img, $x++, $y));
$result .= $arrChr[$rgb['blue']].$arrChr[$rgb['green']].$arrChr[$rgb['red']];
$rgb = imagecolorsforindex($img, imagecolorat($img, $x++, $y));
$result .= $arrChr[$rgb['blue']].$arrChr[$rgb['green']].$arrChr[$rgb['red']];
}
for ($x=$widthFloor; $x<$widthCeil; $x++) {
$rgb = ($x<$widthOrig) ? imagecolorsforindex($img, imagecolorat($img, $x, $y)) : $bgfillcolor;
$result .= $arrChr[$rgb['blue']].$arrChr[$rgb['green']].$arrChr[$rgb['red']];
}
$y--;
}
// see imagegif
if($filename == '') {
echo $result;
} else {
$file = fopen($filename, 'wb');
fwrite($file, $result);
fclose($file);
}
}
// imagebmp helpers
function int_to_dword($n) {
return chr($n & 255).chr(($n >> 8) & 255).chr(($n >> 16) & 255).chr(($n >> 24) & 255);
}
function int_to_word($n) {
return chr($n & 255).chr(($n >> 8) & 255);
}
?>