<?php /** @file */
function photo_factory($data, $type = null) {
$ph = null;
$unsupported_types = array(
'image/bmp',
'image/vnd.microsoft.icon',
'image/tiff',
'image/svg+xml'
);
if($type && in_array(strtolower($type),$unsupported_types)) {
logger('photo_factory: unsupported image type');
return null;
}
$ignore_imagick = get_config('system', 'ignore_imagick');
if(class_exists('Imagick') && !$ignore_imagick) {
$v = Imagick::getVersion();
preg_match('/ImageMagick ([0-9]+\.[0-9]+\.[0-9]+)/', $v['versionString'], $m);
if(version_compare($m[1],'6.6.7') >= 0) {
require_once('include/photo/photo_imagick.php');
$ph = new photo_imagick($data,$type);
}
else {
// earlier imagick versions have issues with scaling png's
// don't log this because it will just fill the logfile.
// leave this note here so those who are looking for why
// we aren't using imagick can find it
}
}
if(! $ph) {
require_once('include/photo/photo_gd.php');
$ph = new photo_gd($data,$type);
}
return $ph;
}
abstract class photo_driver {
protected $image;
protected $width;
protected $height;
protected $valid;
protected $type;
protected $types;
abstract function supportedTypes();
abstract function load($data,$type);
abstract function destroy();
abstract function setDimensions();
abstract function getImage();
abstract function doScaleImage($new_width,$new_height);
abstract function rotate($degrees);
abstract function flip($horiz = true, $vert = false);
abstract function cropImage($max,$x,$y,$w,$h);
abstract function cropImageRect($maxx,$maxy,$x,$y,$w,$h);
abstract function imageString();
abstract function clearexif();
public function __construct($data, $type='') {
$this->types = $this->supportedTypes();
if (! array_key_exists($type,$this->types)){
$type='image/jpeg';
}
$this->type = $type;
$this->valid = false;
$this->load($data,$type);
}
public function __destruct() {
if($this->is_valid())
$this->destroy();
}
public function is_valid() {
return $this->valid;
}
public function getWidth() {
if(!$this->is_valid())
return FALSE;
return $this->width;
}
public function getHeight() {
if(!$this->is_valid())
return FALSE;
return $this->height;
}
public function saveImage($path) {
if(!$this->is_valid())
return FALSE;
file_put_contents($path, $this->imageString());
}
public function getType() {
if(!$this->is_valid())
return FALSE;
return $this->type;
}
public function getExt() {
if(!$this->is_valid())
return FALSE;
return $this->types[$this->getType()];
}
/**
* @brief scale image
* int $max maximum pixel size in either dimension
* boolean $float_height - if true allow height to float to any length on tall images,
* constraining only the width
*/
public function scaleImage($max, $float_height = true) {
if(!$this->is_valid())
return FALSE;
$width = $this->width;
$height = $this->height;
$dest_width = $dest_height = 0;
if((! $width)|| (! $height))
return FALSE;
if($width > $max && $height > $max) {
// very tall image (greater than 16:9)
// constrain the width - let the height float.
if(((($height * 9) / 16) > $width) && ($float_height)) {
$dest_width = $max;
$dest_height = intval(( $height * $max ) / $width);
}
// else constrain both dimensions
elseif($width > $height) {
$dest_width = $max;
$dest_height = intval(( $height * $max ) / $width);
}
else {
$dest_width = intval(( $width * $max ) / $height);
$dest_height = $max;
}
}
else {
if( $width > $max ) {
$dest_width = $max;
$dest_height = intval(( $height * $max ) / $width);
}
else {
if( $height > $max ) {
// very tall image (greater than 16:9)
// but width is OK - don't do anything
if(((($height * 9) / 16) > $width) && ($float_height)) {
$dest_width = $width;
$dest_height = $height;
}
else {
$dest_width = intval(( $width * $max ) / $height);
$dest_height = $max;
}
}
else {
$dest_width = $width;
$dest_height = $height;
}
}
}
$this->doScaleImage($dest_width,$dest_height);
}
public function scaleImageUp($min) {
if(!$this->is_valid())
return FALSE;
$width = $this->width;
$height = $this->height;
$dest_width = $dest_height = 0;
if((! $width)|| (! $height))
return FALSE;
if($width < $min && $height < $min) {
if($width > $height) {
$dest_width = $min;
$dest_height = intval(( $height * $min ) / $width);
}
else {
$dest_width = intval(( $width * $min ) / $height);
$dest_height = $min;
}
}
else {
if( $width < $min ) {
$dest_width = $min;
$dest_height = intval(( $height * $min ) / $width);
}
else {
if( $height < $min ) {
$dest_width = intval(( $width * $min ) / $height);
$dest_height = $min;
}
else {
$dest_width = $width;
$dest_height = $height;
}
}
}
$this->doScaleImage($dest_width,$dest_height);
}
public function scaleImageSquare($dim) {
if(!$this->is_valid())
return FALSE;
$this->doScaleImage($dim,$dim);
}
/**
* @brief reads exif data from filename
*/
public function exif($filename) {
if((! function_exists('exif_read_data'))
|| (! in_array($this->getType(), [ 'image/jpeg' , 'image/tiff'] ))) {
return false;
}
/*
* PHP 7.2 allows you to use a stream resource, which should reduce/avoid
* memory exhaustion on large images.
*/
if(version_compare(PHP_VERSION,'7.2.0') >= 0) {
$f = @fopen($filename,'rb');
}
else {
$f = $filename;
}
if($f) {
return @exif_read_data($f,null,true);
}
return false;
}
/**
* @brief orients current image based on exif orientation information
*/
public function orient($exif) {
if(! ($this->is_valid() && $exif)) {
return false;
}
$ort = ((array_key_exists('IFD0',$exif)) ? $exif['IFD0']['Orientation'] : $exif['Orientation']);
if(! $ort) {
return false;
}
switch($ort) {
case 1: // nothing
break;
case 2: // horizontal flip
$this->flip();
break;
case 3: // 180 rotate left
$this->rotate(180);
break;
case 4: // vertical flip
$this->flip(false, true);
break;
case 5: // vertical flip + 90 rotate right
$this->flip(false, true);
$this->rotate(-90);
break;
case 6: // 90 rotate right
$this->rotate(-90);
break;
case 7: // horizontal flip + 90 rotate right
$this->flip();
$this->rotate(-90);
break;
case 8: // 90 rotate left
$this->rotate(90);
break;
default:
break;
}
return true;
}
public function save($arr) {
if(! $this->is_valid()) {
logger('attempt to store invalid photo.');
return false;
}
$p = array();
$p['aid'] = ((intval($arr['aid'])) ? intval($arr['aid']) : 0);
$p['uid'] = ((intval($arr['uid'])) ? intval($arr['uid']) : 0);
$p['xchan'] = (($arr['xchan']) ? $arr['xchan'] : '');
$p['resource_id'] = (($arr['resource_id']) ? $arr['resource_id'] : '');
$p['filename'] = (($arr['filename']) ? $arr['filename'] : '');
$p['album'] = (($arr['album']) ? $arr['album'] : '');
$p['imgscale'] = ((intval($arr['imgscale'])) ? intval($arr['imgscale']) : 0);
$p['allow_cid'] = (($arr['allow_cid']) ? $arr['allow_cid'] : '');
$p['allow_gid'] = (($arr['allow_gid']) ? $arr['allow_gid'] : '');
$p['deny_cid'] = (($arr['deny_cid']) ? $arr['deny_cid'] : '');
$p['deny_gid'] = (($arr['deny_gid']) ? $arr['deny_gid'] : '');
$p['edited'] = (($arr['edited']) ? $arr['edited'] : datetime_convert());
$p['title'] = (($arr['title']) ? $arr['title'] : '');
$p['description'] = (($arr['description']) ? $arr['description'] : '');
$p['photo_usage'] = intval($arr['photo_usage']);
$p['os_storage'] = intval($arr['os_storage']);
$p['os_path'] = $arr['os_path'];
$p['os_syspath'] = ((array_key_exists('os_syspath',$arr)) ? $arr['os_syspath'] : '');
$p['display_path'] = (($arr['display_path']) ? $arr['display_path'] : '');
$p['width'] = (($arr['width']) ? $arr['width'] : $this->getWidth());
$p['height'] = (($arr['height']) ? $arr['height'] : $this->getHeight());
if(! intval($p['imgscale']))
logger('save: ' . print_r($arr,true), LOGGER_DATA);
$x = q("select id, created from photo where resource_id = '%s' and uid = %d and xchan = '%s' and imgscale = %d limit 1",
dbesc($p['resource_id']),
intval($p['uid']),
dbesc($p['xchan']),
intval($p['imgscale'])
);
if($x) {
$p['created'] = (($x['created']) ? $x['created'] : $p['edited']);
$r = q("UPDATE photo set
aid = %d,
uid = %d,
xchan = '%s',
resource_id = '%s',
created = '%s',
edited = '%s',
filename = '%s',
mimetype = '%s',
album = '%s',
height = %d,
width = %d,
content = '%s',
os_storage = %d,
filesize = %d,
imgscale = %d,
photo_usage = %d,
title = '%s',
description = '%s',
os_path = '%s',
display_path = '%s',
allow_cid = '%s',
allow_gid = '%s',
deny_cid = '%s',
deny_gid = '%s'
where id = %d",
intval($p['aid']),
intval($p['uid']),
dbesc($p['xchan']),
dbesc($p['resource_id']),
dbesc($p['created']),
dbesc($p['edited']),
dbesc(basename($p['filename'])),
dbesc($this->getType()),
dbesc($p['album']),
intval($p['height']),
intval($p['width']),
(intval($p['os_storage']) ? dbescbin($p['os_syspath']) : dbescbin($this->imageString())),
intval($p['os_storage']),
intval(strlen($this->imageString())),
intval($p['imgscale']),
intval($p['photo_usage']),
dbesc($p['title']),
dbesc($p['description']),
dbesc($p['os_path']),
dbesc($p['display_path']),
dbesc($p['allow_cid']),
dbesc($p['allow_gid']),
dbesc($p['deny_cid']),
dbesc($p['deny_gid']),
intval($x[0]['id'])
);
}
else {
$p['created'] = (($arr['created']) ? $arr['created'] : $p['edited']);
$r = q("INSERT INTO photo
( aid, uid, xchan, resource_id, created, edited, filename, mimetype, album, height, width, content, os_storage, filesize, imgscale, photo_usage, title, description, os_path, display_path, allow_cid, allow_gid, deny_cid, deny_gid )
VALUES ( %d, %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d, %d, '%s', %d, %d, %d, %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s' )",
intval($p['aid']),
intval($p['uid']),
dbesc($p['xchan']),
dbesc($p['resource_id']),
dbesc($p['created']),
dbesc($p['edited']),
dbesc(basename($p['filename'])),
dbesc($this->getType()),
dbesc($p['album']),
intval($p['height']),
intval($p['width']),
(intval($p['os_storage']) ? dbescbin($p['os_syspath']) : dbescbin($this->imageString())),
intval($p['os_storage']),
intval(strlen($this->imageString())),
intval($p['imgscale']),
intval($p['photo_usage']),
dbesc($p['title']),
dbesc($p['description']),
dbesc($p['os_path']),
dbesc($p['display_path']),
dbesc($p['allow_cid']),
dbesc($p['allow_gid']),
dbesc($p['deny_cid']),
dbesc($p['deny_gid'])
);
}
logger('photo save ' . $p['imgscale'] . ' returned ' . intval($r));
return $r;
}
}
/**
* Guess image mimetype from filename or from Content-Type header
*
* @arg $filename string Image filename
* @arg $headers string Headers to check for Content-Type (from curl request)
*/
function guess_image_type($filename, $headers = '') {
// logger('Photo: guess_image_type: '.$filename . ($headers?' from curl headers':''), LOGGER_DEBUG);
$type = null;
if ($headers) {
$hdrs=array();
$h = explode("\n",$headers);
foreach ($h as $l) {
list($k,$v) = array_map("trim", explode(":", trim($l), 2));
$hdrs[strtolower($k)] = $v;
}
logger('Curl headers: '.var_export($hdrs, true), LOGGER_DEBUG);
if (array_key_exists('content-type', $hdrs))
$type = $hdrs['content-type'];
}
if (is_null($type)){
$ignore_imagick = get_config('system', 'ignore_imagick');
// Guessing from extension? Isn't that... dangerous?
if(class_exists('Imagick') && file_exists($filename) && is_readable($filename) && !$ignore_imagick) {
$v = Imagick::getVersion();
preg_match('/ImageMagick ([0-9]+\.[0-9]+\.[0-9]+)/', $v['versionString'], $m);
if(version_compare($m[1],'6.6.7') >= 0) {
/**
* Well, this not much better,
* but at least it comes from the data inside the image,
* we won't be tricked by a manipulated extension
*/
$image = new Imagick($filename);
$type = $image->getImageMimeType();
}
else {
// earlier imagick versions have issues with scaling png's
// don't log this because it will just fill the logfile.
// leave this note here so those who are looking for why
// we aren't using imagick can find it
}
}
if(is_null($type)) {
$ext = pathinfo($filename, PATHINFO_EXTENSION);
$ph = photo_factory('');
$types = $ph->supportedTypes();
foreach($types as $m => $e) {
if($ext === $e) {
$type = $m;
}
}
}
if(is_null($type) && (strpos($filename,'http') === false)) {
$size = getimagesize($filename);
$ph = photo_factory('');
$types = $ph->supportedTypes();
$type = ((array_key_exists($size['mime'], $types)) ? $size['mime'] : 'image/jpeg');
}
if(is_null($type)) {
if(strpos(strtolower($filename),'jpg') !== false)
$type = 'image/jpeg';
elseif(strpos(strtolower($filename),'jpeg') !== false)
$type = 'image/jpeg';
elseif(strpos(strtolower($filename),'gif') !== false)
$type = 'image/gif';
elseif(strpos(strtolower($filename),'png') !== false)
$type = 'image/png';
}
}
logger('Photo: guess_image_type: filename = ' . $filename . ' type = ' . $type, LOGGER_DEBUG);
return $type;
}
function delete_thing_photo($url,$ob_hash) {
$hash = basename($url);
$hash = substr($hash,0,strpos($hash,'-'));
// hashes should be 32 bytes.
if((! $ob_hash) || (strlen($hash) < 16))
return;
$r = q("delete from photo where xchan = '%s' and photo_usage = %d and resource_id = '%s'",
dbesc($ob_hash),
intval(PHOTO_THING),
dbesc($hash)
);
}
/**
* @brief fetches an photo from external site and prepares its miniatures.
*
* @param string $photo
* external URL to fetch base image
* @param string $xchan
* channel unique hash
* @param boolean $thing
* TRUE if this is a thing URL
* @param boolean $force
* TRUE if ignore image modification date check (force fetch)
*
* @return array of results
* * \e string \b 0 => local URL to full image
* * \e string \b 1 => local URL to standard thumbnail
* * \e string \b 2 => local URL to micro thumbnail
* * \e string \b 3 => image type
* * \e boolean \b 4 => TRUE if fetch failure
* * \e string \b 5 => modification date
*/
function import_xchan_photo($photo,$xchan,$thing = false,$force = false) {
$modified = '';
$flags = (($thing) ? PHOTO_THING : PHOTO_XCHAN);
$album = (($thing) ? 'Things' : 'Contact Photos');
logger('import_xchan_photo: updating channel photo from ' . $photo . ' for ' . $xchan, LOGGER_DEBUG);
if($thing) {
$hash = photo_new_resource();
}
else {
$r = q("select resource_id, edited, mimetype from photo where xchan = '%s' and photo_usage = %d and imgscale = 4 limit 1",
dbesc($xchan),
intval(PHOTO_XCHAN)
);
if($r) {
$hash = $r[0]['resource_id'];
$modified = $r[0]['edited'];
$type = $r[0]['mimetype'];
}
else {
$hash = photo_new_resource();
}
}
$photo_failure = false;
$img_str = '';
if($photo) {
$filename = basename($photo);
if($force || $modified == '') {
$result = z_fetch_url($photo,true);
}
else {
$h = array('headers' => array("If-Modified-Since: " . gmdate("D, d M Y H:i:s", strtotime($modified . "Z")) . " GMT"));
$result = z_fetch_url($photo,true,0,$h);
}
if($result['success']) {
$img_str = $result['body'];
$type = guess_image_type($photo, $result['header']);
$modified = gmdate('Y-m-d H:i:s', (preg_match('/last-modified: (.+) \S+/i', $result['header'], $o) ? strtotime($o[1] . 'Z') : time()));
if(is_null($type))
$photo_failure = true;
}
elseif($result['return_code'] === 304) {
$photo = z_root() . '/photo/' . $hash . '-4';
$thumb = z_root() . '/photo/' . $hash . '-5';
$micro = z_root() . '/photo/' . $hash . '-6';
}
else {
$photo_failure = true;
}
}
else
$photo_failure = true;
if(! $photo_failure && $result['return_code'] != 304) {
$img = photo_factory($img_str, $type);
if($img->is_valid()) {
$width = $img->getWidth();
$height = $img->getHeight();
if($width && $height) {
if(($width / $height) > 1.2) {
// crop out the sides
$margin = $width - $height;
$img->cropImage(300,($margin / 2),0,$height,$height);
}
elseif(($height / $width) > 1.2) {
// crop out the bottom
$margin = $height - $width;
$img->cropImage(300,0,0,$width,$width);
}
else {
$img->scaleImageSquare(300);
}
}
else
$photo_failure = true;
$p = array(
'xchan' => $xchan,
'resource_id' => $hash,
'filename' => basename($photo),
'album' => $album,
'photo_usage' => $flags,
'imgscale' => 4,
'edited' => $modified
);
$r = $img->save($p);
if($r === false)
$photo_failure = true;
$img->scaleImage(80);
$p['imgscale'] = 5;
$r = $img->save($p);
if($r === false)
$photo_failure = true;
$img->scaleImage(48);
$p['imgscale'] = 6;
$r = $img->save($p);
if($r === false)
$photo_failure = true;
$photo = z_root() . '/photo/' . $hash . '-4';
$thumb = z_root() . '/photo/' . $hash . '-5';
$micro = z_root() . '/photo/' . $hash . '-6';
}
else {
logger('import_xchan_photo: invalid image from ' . $photo);
$photo_failure = true;
}
}
if($photo_failure) {
$default = get_default_profile_photo();
$photo = z_root() . '/' . $default;
$thumb = z_root() . '/' . get_default_profile_photo(80);
$micro = z_root() . '/' . get_default_profile_photo(48);
$type = 'image/png';
$modified = gmdate('Y-m-d H:i:s', filemtime($default));
}
logger('HTTP code: ' . $result['return_code'] . '; modified: ' . $modified . '; failure: ' . ($photo_failure ? 'yes' : 'no') . '; URL: ' . $photo, LOGGER_DEBUG);
return(array($photo,$thumb,$micro,$type,$photo_failure,$modified));
}
function import_channel_photo_from_url($photo,$aid,$uid) {
if($photo) {
$filename = basename($photo);
$result = z_fetch_url($photo,true);
if($result['success']) {
$img_str = $result['body'];
$type = guess_image_type($photo, $result['header']);
if(is_null($type))
$photo_failure = true;
}
}
else {
$photo_failure = true;
}
import_channel_photo($img_str,$type,$aid,$uid);
return $type;
}
function import_channel_photo($photo,$type,$aid,$uid) {
logger('import_channel_photo: importing channel photo for ' . $uid, LOGGER_DEBUG);
$hash = photo_new_resource();
$photo_failure = false;
$filename = $hash;
$img = photo_factory($photo, $type);
if($img->is_valid()) {
$img->scaleImageSquare(300);
$p = array('aid' => $aid, 'uid' => $uid, 'resource_id' => $hash, 'filename' => $filename, 'album' => t('Profile Photos'), 'photo_usage' => PHOTO_PROFILE, 'imgscale' => 4);
$r = $img->save($p);
if($r === false)
$photo_failure = true;
$img->scaleImage(80);
$p['imgscale'] = 5;
$r = $img->save($p);
if($r === false)
$photo_failure = true;
$img->scaleImage(48);
$p['imgscale'] = 6;
$r = $img->save($p);
if($r === false)
$photo_failure = true;
}
else {
logger('import_channel_photo: invalid image.');
$photo_failure = true;
}
//return(($photo_failure)? false : true);
if($photo_failure)
return false;
else
return $hash;
}