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-rw-r--r--Zotlabs/Photo/PhotoDriver.php468
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diff --git a/Zotlabs/Photo/PhotoDriver.php b/Zotlabs/Photo/PhotoDriver.php
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+<?php
+
+namespace Zotlabs\Photo;
+
+/**
+ * @brief Abstract photo driver class.
+ *
+ * Inheritance seems not to be the best design pattern for such photo drivers.
+ */
+abstract class PhotoDriver {
+
+ /**
+ * @brief This variable keeps the image.
+ *
+ * For GD it is a PHP image resource.
+ * For ImageMagick it is an \Imagick object.
+ *
+ * @var resource|\Imagick
+ */
+ protected $image;
+
+ /**
+ * @var integer
+ */
+ protected $width;
+
+ /**
+ * @var integer
+ */
+ protected $height;
+
+ /**
+ * @var boolean
+ */
+ protected $valid;
+
+ /**
+ * @brief The mimetype of the image.
+ *
+ * @var string
+ */
+ protected $type;
+
+ /**
+ * @brief Supported mimetypes by the used photo driver.
+ *
+ * @var array
+ */
+ protected $types;
+
+ /**
+ * @brief Return an array with supported mimetypes.
+ *
+ * @return array
+ * Associative array with mimetype as key and file extension as value.
+ */
+ abstract public function supportedTypes();
+
+ abstract protected function load($data, $type);
+
+ abstract protected function destroy();
+
+ abstract protected function setDimensions();
+
+ /**
+ * @brief Return the current image.
+ *
+ * @fixme Shouldn't his method be protected, because outside of the current
+ * driver it makes no sense at all because of the different return values.
+ *
+ * @return boolean|resource|\Imagick
+ * false on failure, a PHP image resource for GD driver, an \Imagick object
+ * for ImageMagick driver.
+ */
+ abstract public function getImage();
+
+ abstract public function doScaleImage($new_width, $new_height);
+
+ abstract public function rotate($degrees);
+
+ abstract public function flip($horiz = true, $vert = false);
+
+ abstract public function cropImage($max, $x, $y, $w, $h);
+
+ abstract public function cropImageRect($maxx, $maxy, $x, $y, $w, $h);
+
+ /**
+ * @brief Return a binary string from the image resource.
+ *
+ * @return string A Binary String.
+ */
+ abstract public function imageString();
+
+ abstract public function clearexif();
+
+
+ /**
+ * @brief PhotoDriver constructor.
+ *
+ * @param string $data Image
+ * @param string $type mimetype
+ */
+ public function __construct($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();
+ }
+
+ /**
+ * @brief Is it a valid image object.
+ *
+ * @return boolean
+ */
+ public function is_valid() {
+ return $this->valid;
+ }
+
+ /**
+ * @brief Get the width of the image.
+ *
+ * @return boolean|number Width of image in pixels, or false on failure
+ */
+ public function getWidth() {
+ if(! $this->is_valid())
+ return false;
+
+ return $this->width;
+ }
+
+ /**
+ * @brief Get the height of the image.
+ *
+ * @return boolean|number Height of image in pixels, or false on failure
+ */
+ public function getHeight() {
+ if(! $this->is_valid())
+ return false;
+
+ return $this->height;
+ }
+
+ /**
+ * @brief Saves the image resource to a file in filesystem.
+ *
+ * @param string $path Path and filename where to save the image
+ * @return boolean False on failure, otherwise true
+ */
+ public function saveImage($path) {
+ if(! $this->is_valid())
+ return false;
+
+ return (file_put_contents($path, $this->imageString()) ? true : false);
+ }
+
+ /**
+ * @brief Return mimetype of the image resource.
+ *
+ * @return boolean|string False on failure, otherwise mimetype.
+ */
+ public function getType() {
+ if(! $this->is_valid())
+ return false;
+
+ return $this->type;
+ }
+
+ /**
+ * @brief Return file extension of the image resource.
+ *
+ * @return boolean|string False on failure, otherwise file extension.
+ */
+ public function getExt() {
+ if(! $this->is_valid())
+ return false;
+
+ return $this->types[$this->getType()];
+ }
+
+ /**
+ * @brief Scale image to max pixel size in either dimension.
+ *
+ * @param int $max maximum pixel size in either dimension
+ * @param boolean $float_height (optional)
+ * If true allow height to float to any length on tall images, constraining
+ * only the width
+ * @return boolean|void false on failure, otherwise void
+ */
+ public function scaleImage($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);
+ }
+
+ /**
+ * @brief Scales image to a square.
+ *
+ * @param int $dim Pixel of square image
+ * @return boolean|void false on failure, otherwise void
+ */
+ public function scaleImageSquare($dim) {
+ if(! $this->is_valid())
+ return false;
+
+ $this->doScaleImage($dim, $dim);
+ }
+
+ /**
+ * @brief Reads exif data from a given filename.
+ *
+ * @param string $filename
+ * @return boolean|array
+ */
+ public function exif($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.
+ *
+ * @param array $exif
+ * @return boolean true if oriented, otherwise false
+ */
+ public function orient($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;
+ }
+
+ /**
+ * @brief Save photo to database.
+ *
+ * @param array $arr
+ * @param boolean $skipcheck (optional) default false
+ * @return boolean|array
+ */
+ public function save($arr, $skipcheck = false) {
+ if(! ($skipcheck || $this->is_valid())) {
+ logger('Attempt to store invalid photo.');
+ return false;
+ }
+
+ $p = [];
+
+ $p['aid'] = ((intval($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'] : '');
+ $p['mimetype'] = (($arr['mimetype']) ? $arr['mimetype'] : $this->getType());
+ $p['album'] = (($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());
+ $p['expires'] = (($arr['expires']) ? $arr['expires'] : gmdate('Y-m-d H:i:s', time() + get_config('system', 'photo_cache_time', 86400)));
+
+ if(! intval($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']);
+ $r = q("UPDATE photo set
+ aid = %d,
+ uid = %d,
+ xchan = '%s',
+ resource_id = '%s',
+ created = '%s',
+ edited = '%s',
+ filename = '%s',
+ mimetype = '%s',
+ album = '%s',
+ height = %d,
+ width = %d,
+ content = '%s',
+ os_storage = %d,
+ filesize = %d,
+ imgscale = %d,
+ photo_usage = %d,
+ title = '%s',
+ description = '%s',
+ os_path = '%s',
+ display_path = '%s',
+ allow_cid = '%s',
+ allow_gid = '%s',
+ deny_cid = '%s',
+ deny_gid = '%s',
+ expires = '%s'
+ where id = %d",
+ intval($p['aid']), intval($p['uid']), dbesc($p['xchan']), dbesc($p['resource_id']), dbescdate($p['created']), dbescdate($p['edited']), dbesc(basename($p['filename'])), dbesc($p['mimetype']), dbesc($p['album']), intval($p['height']), intval($p['width']), (intval($p['os_storage']) ? dbescbin($p['os_syspath']) : dbescbin($this->imageString())), intval($p['os_storage']), (intval($p['os_storage']) ? @filesize($p['os_syspath']) : 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($p['deny_gid']), dbescdate($p['expires']), intval($x[0]['id']));
+ } else {
+ $p['created'] = (($arr['created']) ? $arr['created'] : $p['edited']);
+ $r = q("INSERT INTO photo
+ ( aid, uid, xchan, resource_id, created, edited, filename, mimetype, album, height, width, content, os_storage, filesize, imgscale, photo_usage, title, description, os_path, display_path, allow_cid, allow_gid, deny_cid, deny_gid, expires )
+ VALUES ( %d, %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d, %d, '%s', %d, %d, %d, %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s', '%s' )", intval($p['aid']), intval($p['uid']), dbesc($p['xchan']), dbesc($p['resource_id']), dbescdate($p['created']), dbescdate($p['edited']), dbesc(basename($p['filename'])), dbesc($p['mimetype']), dbesc($p['album']), intval($p['height']), intval($p['width']), (intval($p['os_storage']) ? dbescbin($p['os_syspath']) : dbescbin($this->imageString())), intval($p['os_storage']), (intval($p['os_storage']) ? @filesize($p['os_syspath']) : 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($p['deny_gid']), dbescdate($p['expires']));
+ }
+ logger('Photo save imgscale ' . $p['imgscale'] . ' returned ' . intval($r));
+
+ return $r;
+ }
+
+}