aboutsummaryrefslogtreecommitdiff
path: root/engine/lib/filestore.php
diff options
context:
space:
mode:
Diffstat (limited to 'engine/lib/filestore.php')
-rw-r--r--engine/lib/filestore.php1319
1 files changed, 497 insertions, 822 deletions
diff --git a/engine/lib/filestore.php b/engine/lib/filestore.php
index 350848d82..a3c7ba439 100644
--- a/engine/lib/filestore.php
+++ b/engine/lib/filestore.php
@@ -1,845 +1,520 @@
<?php
- /**
- * Elgg filestore.
- * This file contains classes, interfaces and functions for saving and retrieving data to various file
- * stores.
- *
- * @package Elgg
- * @subpackage API
- * @license http://www.gnu.org/licenses/old-licenses/gpl-2.0.html GNU Public License version 2
- * @author Curverider Ltd
- * @copyright Curverider Ltd 2008-2009
- * @link http://elgg.org/
- */
-
- include_once("objects.php");
-
- /**
- * @class ElggFilestore
- * This class defines the interface for all elgg data repositories.
- * @author Curverider Ltd
- */
- abstract class ElggFilestore
- {
- /**
- * Attempt to open the file $file for storage or writing.
- *
- * @param ElggFile $file
- * @param string $mode "read", "write", "append"
- * @return mixed A handle to the opened file or false on error.
- */
- abstract public function open(ElggFile $file, $mode);
-
- /**
- * Write data to a given file handle.
- *
- * @param mixed $f The file handle - exactly what this is depends on the file system
- * @param string $data The binary string of data to write
- * @return int Number of bytes written.
- */
- abstract public function write($f, $data);
-
- /**
- * Read data from a filestore.
- *
- * @param mixed $f The file handle
- * @param int $length Length in bytes to read.
- * @param int $offset The optional offset.
- * @return mixed String of data or false on error.
- */
- abstract public function read($f, $length, $offset = 0);
-
- /**
- * Seek a given position within a file handle.
- *
- * @param mixed $f The file handle.
- * @param int $position The position.
- */
- abstract public function seek($f, $position);
-
- /**
- * Return a whether the end of a file has been reached.
- *
- * @param mixed $f The file handle.
- * @return boolean
- */
- abstract public function eof($f);
-
- /**
- * Return the current position in an open file.
- *
- * @param mixed $f The file handle.
- * @return int
- */
- abstract public function tell($f);
-
- /**
- * Close a given file handle.
- *
- * @param mixed $f
- */
- abstract public function close($f);
-
- /**
- * Delete the file associated with a given file handle.
- *
- * @param ElggFile $file
- */
- abstract public function delete(ElggFile $file);
-
- /**
- * Return the size in bytes for a given file.
- *
- * @param ElggFile $file
- */
- abstract public function getFileSize(ElggFile $file);
-
- /**
- * Return the filename of a given file as stored on the filestore.
- *
- * @param ElggFile $file
- */
- abstract public function getFilenameOnFilestore(ElggFile $file);
-
- /**
- * Get the filestore's creation parameters as an associative array.
- * Used for serialisation and for storing the creation details along side a file object.
- *
- * @return array
- */
- abstract public function getParameters();
-
- /**
- * Set the parameters from the associative array produced by $this->getParameters().
- */
- abstract public function setParameters(array $parameters);
-
- /**
- * Get the contents of the whole file.
- *
- * @param mixed $file The file handle.
- * @return mixed The file contents.
- */
- abstract public function grabFile(ElggFile $file);
-
- /**
- * Return whether a file physically exists or not.
- *
- * @param ElggFile $file
- */
- abstract public function exists(ElggFile $file);
-
- }
-
- /**
- * @class ElggDiskFilestore
- * This class uses disk storage to save data.
- * @author Curverider Ltd
- */
- class ElggDiskFilestore extends ElggFilestore
- {
- /**
- * Directory root.
- */
- private $dir_root;
-
- /**
- * Default depth of file directory matrix
- */
- private $matrix_depth = 5;
-
- /**
- * Construct a disk filestore using the given directory root.
- *
- * @param string $directory_root Root directory, must end in "/"
- */
- public function __construct($directory_root)
- {
- $this->dir_root = $directory_root;
- }
-
- public function open(ElggFile $file, $mode)
- {
- $fullname = $this->getFilenameOnFilestore($file);
-
- // Split into path and name
- $ls = strrpos($fullname,"/");
- if ($ls===false) $ls = 0;
-
- $path = substr($fullname, 0, $ls);
- $name = substr($fullname, $ls);
-
- // Try and create the directory
- try { $this->make_directory_root($path); } catch (Exception $e){}
-
- if (($mode!='write') && (!file_exists($fullname)))
- return false;
-
- switch ($mode)
- {
- case "read" : $mode = "r+b"; break;
- case "write" : $mode = "w+b"; break;
- case "append" : $mode = "a+b"; break;
- default: throw new InvalidParameterException(sprintf(elgg_echo('InvalidParameterException:UnrecognisedFileMode'), $mode));
- }
-
- return fopen($fullname, $mode);
-
- }
-
- public function write($f, $data)
- {
- return fwrite($f, $data);
- }
-
- public function read($f, $length, $offset = 0)
- {
- if ($offset)
- $this->seek($f, $offset);
-
- return fread($f, $length);
- }
-
- public function close($f)
- {
- return fclose($f);
- }
-
- public function delete(ElggFile $file)
- {
- $filename = $this->getFilenameOnFilestore($file);
- if (file_exists($filename)) {
- return unlink($filename);
- } else {
- return true;
- }
- }
-
- public function seek($f, $position)
- {
- return fseek($f, $position);
- }
-
- public function tell($f)
- {
- return ftell($f);
- }
-
- public function eof($f)
- {
- return feof($f);
- }
-
- public function getFileSize(ElggFile $file)
- {
- return filesize($this->getFilenameOnFilestore($file));
- }
-
- public function getFilenameOnFilestore(ElggFile $file)
- {
- $owner = $file->getOwnerEntity();
- if (!$owner)
- $owner = get_loggedin_user();
-
- if ((!$owner) || (!$owner->username)) throw InvalidParameterException(elgg_echo('InvalidParameterException:MissingOwner'));
-
- return $this->dir_root . $this->make_file_matrix($owner->username) . $file->getFilename();
- }
-
- public function grabFile(ElggFile $file) {
-
- return file_get_contents($file->getFilenameOnFilestore());
-
- }
-
- public function exists(ElggFile $file)
- {
- return file_exists($this->getFilenameOnFilestore($file));
- }
-
- /**
- * Make the directory root.
- *
- * @param string $dirroot
- */
- protected function make_directory_root($dirroot)
- {
- if (!file_exists($dirroot))
- if (!@mkdir($dirroot, 0700, true))
- throw new IOException(sprintf(elgg_echo('IOException:CouldNotMake'), $dirroot));
-
- return true;
- }
-
- /**
- * Multibyte string tokeniser.
- *
- * Splits a string into an array. Will fail safely if mbstring is not installed (although this may still
- * not handle .
- *
- * @param string $string String
- * @param string $charset The charset, defaults to UTF8
- * @return array
- */
- private function mb_str_split($string, $charset = 'UTF8')
- {
- if (is_callable('mb_substr'))
- {
- $length = mb_strlen($string);
- $array = array();
-
- while ($length)
- {
- $array[] = mb_substr($string, 0, 1, $charset);
- $string = mb_substr($string, 1, $length, $charset);
-
- $length = mb_strlen($string);
- }
-
- return $array;
- }
- else
- return str_split($string);
-
- return false;
- }
-
- /**
- * Construct the filename matrix.
- *
- * @param string $filename
- */
- protected function make_file_matrix($filename)
- {
- $matrix = "";
-
- $name = $filename;
- $filename = $this->mb_str_split($filename);
- if (!$filename) return false;
-
- $len = count($filename);
- if ($len>$this->matrix_depth)
- $len = $this->matrix_depth;
-
- for ($n = 0; $n < $len; $n++) {
- $matrix .= $filename[$n] . "/";
- }
-
- return $matrix.$name."/";
- }
-
- public function getParameters()
- {
- return array("dir_root" => $this->dir_root);
- }
-
- public function setParameters(array $parameters)
- {
- if (isset($parameters['dir_root']))
- {
- $this->dir_root = $parameters['dir_root'];
- return true;
- }
-
- return false;
+/**
+ * Elgg filestore.
+ * This file contains classes, interfaces and functions for
+ * saving and retrieving data to various file stores.
+ *
+ * @package Elgg.Core
+ * @subpackage DataModel.FileStorage
+ */
+
+/**
+ * Get the size of the specified directory.
+ *
+ * @param string $dir The full path of the directory
+ * @param int $totalsize Add to current dir size
+ *
+ * @return int The size of the directory.
+ */
+function get_dir_size($dir, $totalsize = 0) {
+ $handle = @opendir($dir);
+ while ($file = @readdir($handle)) {
+ if (eregi("^\.{1,2}$", $file)) {
+ continue;
+ }
+ if (is_dir($dir . $file)) {
+ $totalsize = get_dir_size($dir . $file . "/", $totalsize);
+ } else {
+ $totalsize += filesize($dir . $file);
}
}
-
- /**
- * @class ElggFile
- * This class represents a physical file.
- *
- * Usage:
- * Create a new ElggFile object and specify a filename, and optionally a FileStore (if one isn't specified
- * then the default is assumed.
- *
- * Open the file using the appropriate mode, and you will be able to read and write to the file.
- *
- * Optionally, you can also call the file's save() method, this will turn the file into an entity in the
- * system and permit you to do things like attach tags to the file etc. This is not done automatically since
- * there are many occasions where you may want access to file data on datastores using the ElggFile interface
- * but do not want to create an Entity reference to it in the system (temporary files for example).
- *
- * @author Curverider Ltd
- */
- class ElggFile extends ElggObject
- {
- /** Filestore */
- private $filestore;
-
- /** File handle used to identify this file in a filestore. Created by open. */
- private $handle;
-
- protected function initialise_attributes()
- {
- parent::initialise_attributes();
-
- $this->attributes['subtype'] = "file";
- }
-
- public function __construct($guid = null)
- {
- parent::__construct($guid);
-
- // Set default filestore
- $this->filestore = $this->getFilestore();
- }
-
- /**
- * Set the filename of this file.
- *
- * @param string $name The filename.
- */
- public function setFilename($name) { $this->filename = $name; }
-
- /**
- * Return the filename.
- */
- public function getFilename() { return $this->filename; }
-
- /**
- * Return the filename of this file as it is/will be stored on the filestore, which may be different
- * to the filename.
- */
- public function getFilenameOnFilestore() { return $this->filestore->getFilenameOnFilestore($this); }
-
- /**
- * Get the mime type of the file.
- */
- public function getMimeType()
- {
- if ($this->mimetype)
- return $this->mimetype;
-
- // TODO : Guess mimetype if not here
- }
-
- /**
- * Set the mime type of the file.
- *
- * @param $mimetype The mimetype
- */
- public function setMimeType($mimetype) { return $this->mimetype = $mimetype; }
-
- /**
- * Set the optional file description.
- *
- * @param string $description The description.
- */
- public function setDescription($description) { $this->description = $description; }
-
- /**
- * Open the file with the given mode
- *
- * @param string $mode Either read/write/append
- */
- public function open($mode)
- {
- if (!$this->getFilename())
- throw new IOException(elgg_echo('IOException:MissingFileName'));
-
- // See if file has already been saved
- // seek on datastore, parameters and name?
-
- // Sanity check
- if (
- ($mode!="read") &&
- ($mode!="write") &&
- ($mode!="append")
- )
- throw new InvalidParameterException(sprintf(elgg_echo('InvalidParameterException:UnrecognisedFileMode'), $mode));
-
- // Get the filestore
- $fs = $this->getFilestore();
-
- // Ensure that we save the file details to object store
- //$this->save();
-
- // Open the file handle
- $this->handle = $fs->open($this, $mode);
-
- return $this->handle;
- }
-
- /**
- * Write some data.
- *
- * @param string $data The data
- */
- public function write($data)
- {
- $fs = $this->getFilestore();
-
- return $fs->write($this->handle, $data);
- }
-
- /**
- * Read some data.
- *
- * @param int $length Amount to read.
- * @param int $offset The offset to start from.
- */
- public function read($length, $offset = 0)
- {
- $fs = $this->getFilestore();
-
- return $fs->read($this->handle, $length, $offset);
- }
-
- /**
- * Gets the full contents of this file.
- *
- * @return mixed The file contents.
- */
- public function grabFile() {
-
- $fs = $this->getFilestore();
- return $fs->grabFile($this);
-
- }
-
- /**
- * Close the file and commit changes
- */
- public function close()
- {
- $fs = $this->getFilestore();
-
- if ($fs->close($this->handle))
- {
- $this->handle = NULL;
-
- return true;
- }
-
- return false;
- }
-
- /**
- * Delete this file.
- */
- public function delete()
- {
- $fs = $this->getFilestore();
- if ($fs->delete($this)) {
- return parent::delete();
- }
- }
-
- /**
- * Seek a position in the file.
- *
- * @param int $position
- */
- public function seek($position)
- {
- $fs = $this->getFilestore();
-
- return $fs->seek($this->handle, $position);
- }
-
- /**
- * Return the current position of the file.
- *
- * @return int The file position
- */
- public function tell()
- {
- $fs = $this->getFilestore();
-
- return $fs->tell($this->handle);
- }
-
- /**
- * Return the size of the file in bytes.
- */
- public function size()
- {
- return $this->filestore->getFileSize($this);
- }
-
- /**
- * Return a boolean value whether the file handle is at the end of the file
- */
- public function eof()
- {
- $fs = $this->getFilestore();
-
- return $fs->eof($this->handle);
- }
-
- public function exists()
- {
- $fs = $this->getFilestore();
-
- return $fs->exists($this);
- }
-
- /**
- * Set a filestore.
- *
- * @param ElggFilestore $filestore The file store.
- */
- public function setFilestore(ElggFilestore $filestore)
- {
- $this->filestore = $filestore;
+ @closedir($handle);
+
+ return($totalsize);
+}
+
+/**
+ * Get the contents of an uploaded file.
+ * (Returns false if there was an issue.)
+ *
+ * @param string $input_name The name of the file input field on the submission form
+ *
+ * @return mixed|false The contents of the file, or false on failure.
+ */
+function get_uploaded_file($input_name) {
+ // If the file exists ...
+ if (isset($_FILES[$input_name]) && $_FILES[$input_name]['error'] == 0) {
+ return file_get_contents($_FILES[$input_name]['tmp_name']);
+ }
+ return false;
+}
+
+/**
+ * Gets the jpeg contents of the resized version of an uploaded image
+ * (Returns false if the uploaded file was not an image)
+ *
+ * @param string $input_name The name of the file input field on the submission form
+ * @param int $maxwidth The maximum width of the resized image
+ * @param int $maxheight The maximum height of the resized image
+ * @param bool $square If set to true, will take the smallest
+ * of maxwidth and maxheight and use it to set the
+ * dimensions on all size; the image will be cropped.
+ * @param bool $upscale Resize images smaller than $maxwidth x $maxheight?
+ *
+ * @return false|mixed The contents of the resized image, or false on failure
+ */
+function get_resized_image_from_uploaded_file($input_name, $maxwidth, $maxheight,
+$square = false, $upscale = false) {
+
+ // If our file exists ...
+ if (isset($_FILES[$input_name]) && $_FILES[$input_name]['error'] == 0) {
+ return get_resized_image_from_existing_file($_FILES[$input_name]['tmp_name'], $maxwidth,
+ $maxheight, $square, 0, 0, 0, 0, $upscale);
+ }
+
+ return false;
+}
+
+/**
+ * Gets the jpeg contents of the resized version of an already uploaded image
+ * (Returns false if the file was not an image)
+ *
+ * @param string $input_name The name of the file on the disk
+ * @param int $maxwidth The desired width of the resized image
+ * @param int $maxheight The desired height of the resized image
+ * @param bool $square If set to true, takes the smallest of maxwidth and
+ * maxheight and use it to set the dimensions on the new image.
+ * If no crop parameters are set, the largest square that fits
+ * in the image centered will be used for the resize. If square,
+ * the crop must be a square region.
+ * @param int $x1 x coordinate for top, left corner
+ * @param int $y1 y coordinate for top, left corner
+ * @param int $x2 x coordinate for bottom, right corner
+ * @param int $y2 y coordinate for bottom, right corner
+ * @param bool $upscale Resize images smaller than $maxwidth x $maxheight?
+ *
+ * @return false|mixed The contents of the resized image, or false on failure
+ */
+function get_resized_image_from_existing_file($input_name, $maxwidth, $maxheight, $square = FALSE,
+$x1 = 0, $y1 = 0, $x2 = 0, $y2 = 0, $upscale = FALSE) {
+
+ // Get the size information from the image
+ $imgsizearray = getimagesize($input_name);
+ if ($imgsizearray == FALSE) {
+ return FALSE;
+ }
+
+ $width = $imgsizearray[0];
+ $height = $imgsizearray[1];
+
+ $accepted_formats = array(
+ 'image/jpeg' => 'jpeg',
+ 'image/pjpeg' => 'jpeg',
+ 'image/png' => 'png',
+ 'image/x-png' => 'png',
+ 'image/gif' => 'gif'
+ );
+
+ // make sure the function is available
+ $load_function = "imagecreatefrom" . $accepted_formats[$imgsizearray['mime']];
+ if (!is_callable($load_function)) {
+ return FALSE;
+ }
+
+ // get the parameters for resizing the image
+ $options = array(
+ 'maxwidth' => $maxwidth,
+ 'maxheight' => $maxheight,
+ 'square' => $square,
+ 'upscale' => $upscale,
+ 'x1' => $x1,
+ 'y1' => $y1,
+ 'x2' => $x2,
+ 'y2' => $y2,
+ );
+ $params = get_image_resize_parameters($width, $height, $options);
+ if ($params == FALSE) {
+ return FALSE;
+ }
+
+ // load original image
+ $original_image = $load_function($input_name);
+ if (!$original_image) {
+ return FALSE;
+ }
+
+ // allocate the new image
+ $new_image = imagecreatetruecolor($params['newwidth'], $params['newheight']);
+ if (!$new_image) {
+ return FALSE;
+ }
+
+ // color transparencies white (default is black)
+ imagefilledrectangle(
+ $new_image, 0, 0, $params['newwidth'], $params['newheight'],
+ imagecolorallocate($new_image, 255, 255, 255)
+ );
+
+ $rtn_code = imagecopyresampled( $new_image,
+ $original_image,
+ 0,
+ 0,
+ $params['xoffset'],
+ $params['yoffset'],
+ $params['newwidth'],
+ $params['newheight'],
+ $params['selectionwidth'],
+ $params['selectionheight']);
+ if (!$rtn_code) {
+ return FALSE;
+ }
+
+ // grab a compressed jpeg version of the image
+ ob_start();
+ imagejpeg($new_image, NULL, 90);
+ $jpeg = ob_get_clean();
+
+ imagedestroy($new_image);
+ imagedestroy($original_image);
+
+ return $jpeg;
+}
+
+/**
+ * Calculate the parameters for resizing an image
+ *
+ * @param int $width Width of the original image
+ * @param int $height Height of the original image
+ * @param array $options See $defaults for the options
+ *
+ * @return array or FALSE
+ * @since 1.7.2
+ */
+function get_image_resize_parameters($width, $height, $options) {
+
+ $defaults = array(
+ 'maxwidth' => 100,
+ 'maxheight' => 100,
+
+ 'square' => FALSE,
+ 'upscale' => FALSE,
+
+ 'x1' => 0,
+ 'y1' => 0,
+ 'x2' => 0,
+ 'y2' => 0,
+ );
+
+ $options = array_merge($defaults, $options);
+
+ extract($options);
+
+ // crop image first?
+ $crop = TRUE;
+ if ($x1 == 0 && $y1 == 0 && $x2 == 0 && $y2 == 0) {
+ $crop = FALSE;
+ }
+
+ // how large a section of the image has been selected
+ if ($crop) {
+ $selection_width = $x2 - $x1;
+ $selection_height = $y2 - $y1;
+ } else {
+ // everything selected if no crop parameters
+ $selection_width = $width;
+ $selection_height = $height;
+ }
+
+ // determine cropping offsets
+ if ($square) {
+ // asking for a square image back
+
+ // detect case where someone is passing crop parameters that are not for a square
+ if ($crop == TRUE && $selection_width != $selection_height) {
+ return FALSE;
}
-
- /**
- * Return a filestore suitable for saving this file.
- * This filestore is either a pre-registered filestore, a filestore loaded from metatags saved
- * along side this file, or the system default.
- */
- protected function getFilestore()
- {
- // Short circuit if already set.
- if ($this->filestore)
- return $this->filestore;
-
-
- // If filestore meta set then retrieve filestore TODO: Better way of doing this?
- $metas = get_metadata_for_entity($this->guid);
- $parameters = array();
- if (is_array($metas))
- foreach ($metas as $meta)
- {
- if (strpos($meta->name, "filestore::")!==false)
- {
- // Filestore parameter tag
- $comp = explode("::", $meta->name);
- $name = $comp[1];
-
- $parameters[$name] = $meta->value;
- }
- }
-
- // If parameters loaded then create new filestore
- if (count($parameters)!=0)
- {
- // Create new filestore object
- if ((!isset($parameters['filestore'])) || (!class_exists($parameters['filestore'])))
- throw new ClassNotFoundException(elgg_echo('ClassNotFoundException:NotFoundNotSavedWithFile'));
-
- $this->filestore = new $parameters['filestore']();
-
- // Set parameters
- $this->filestore->setParameters($parameters);
- }
-
- // if still nothing then set filestore to default
- if (!$this->filestore)
- $this->filestore = get_default_filestore();
+ // size of the new square image
+ $new_width = $new_height = min($maxwidth, $maxheight);
+
+ // find largest square that fits within the selected region
+ $selection_width = $selection_height = min($selection_width, $selection_height);
+
+ // set offsets for crop
+ if ($crop) {
+ $widthoffset = $x1;
+ $heightoffset = $y1;
+ $width = $x2 - $x1;
+ $height = $width;
+ } else {
+ // place square region in the center
+ $widthoffset = floor(($width - $selection_width) / 2);
+ $heightoffset = floor(($height - $selection_height) / 2);
+ }
+ } else {
+ // non-square new image
+ $new_width = $maxwidth;
+ $new_height = $maxheight;
- return $this->filestore;
+ // maintain aspect ratio of original image/crop
+ if (($selection_height / (float)$new_height) > ($selection_width / (float)$new_width)) {
+ $new_width = floor($new_height * $selection_width / (float)$selection_height);
+ } else {
+ $new_height = floor($new_width * $selection_height / (float)$selection_width);
}
-
- public function save()
- {
- if (!parent::save())
- return false;
-
- // Save datastore metadata
- $params = $this->filestore->getParameters();
- foreach ($params as $k => $v)
- $this->setMetaData("filestore::$k", $v);
-
- // Now make a note of the filestore class
- $this->setMetaData("filestore::filestore", get_class($this->filestore));
-
- return true;
+
+ // by default, use entire image
+ $widthoffset = 0;
+ $heightoffset = 0;
+
+ if ($crop) {
+ $widthoffset = $x1;
+ $heightoffset = $y1;
}
-
}
-
- /**
- * Get the contents of an uploaded file.
- * (Returns false if there was an issue.)
- *
- * @param string $input_name The name of the file input field on the submission form
- * @return mixed|false The contents of the file, or false on failure.
- */
- function get_uploaded_file($input_name) {
-
- // If the file exists ...
- if (isset($_FILES[$input_name]) && $_FILES[$input_name]['error'] == 0) {
- return file_get_contents($_FILES[$input_name]['tmp_name']);
- }
- return false;
-
- }
-
- /**
- * Gets the jpeg contents of the resized version of an uploaded image
- * (Returns false if the uploaded file was not an image)
- *
- * @param string $input_name The name of the file input field on the submission form
- * @param int $maxwidth The maximum width of the resized image
- * @param int $maxheight The maximum height of the resized image
- * @param true|false $square If set to true, will take the smallest of maxwidth and maxheight and use it to set the dimensions on all size; the image will be cropped.
- * @return false|mixed The contents of the resized image, or false on failure
- */
- function get_resized_image_from_uploaded_file($input_name, $maxwidth, $maxheight, $square = false) {
- // If our file exists ...
- if (isset($_FILES[$input_name]) && $_FILES[$input_name]['error'] == 0) {
-
- return get_resized_image_from_existing_file($_FILES[$input_name]['tmp_name'], $maxwidth, $maxheight, $square);
-
+
+ if (!$upscale && ($selection_height < $new_height || $selection_width < $new_width)) {
+ // we cannot upscale and selected area is too small so we decrease size of returned image
+ if ($square) {
+ $new_height = $selection_height;
+ $new_width = $selection_width;
+ } else {
+ if ($selection_height < $new_height && $selection_width < $new_width) {
+ $new_height = $selection_height;
+ $new_width = $selection_width;
+ }
}
-
- return false;
}
-
- /**
- * Gets the jpeg contents of the resized version of an already uploaded image
- * (Returns false if the uploaded file was not an image)
- *
- * @param string $input_name The name of the file input field on the submission form
- * @param int $maxwidth The maximum width of the resized image
- * @param int $maxheight The maximum height of the resized image
- * @param true|false $square If set to true, will take the smallest of maxwidth and maxheight and use it to set the dimensions on all size; the image will be cropped.
- * @return false|mixed The contents of the resized image, or false on failure
- */
- function get_resized_image_from_existing_file($input_name, $maxwidth, $maxheight, $square = false, $x1 = 0, $y1 = 0, $x2 = 0, $y2 = 0) {
-
- // Get the size information from the image
- if ($imgsizearray = getimagesize($input_name)) {
-
- // Get width and height
- $width = $imgsizearray[0];
- $height = $imgsizearray[1];
- $newwidth = $width;
- $newheight = $height;
-
- // Square the image dimensions if we're wanting a square image
- if ($square) {
- if ($width < $height) {
- $height = $width;
- } else {
- $width = $height;
- }
-
- $newwidth = $width;
- $newheight = $height;
-
- }
-
- if ($width > $maxwidth) {
- $newheight = floor($height * ($maxwidth / $width));
- $newwidth = $maxwidth;
+
+ $params = array(
+ 'newwidth' => $new_width,
+ 'newheight' => $new_height,
+ 'selectionwidth' => $selection_width,
+ 'selectionheight' => $selection_height,
+ 'xoffset' => $widthoffset,
+ 'yoffset' => $heightoffset,
+ );
+
+ return $params;
+}
+
+/**
+ * Delete an ElggFile file
+ *
+ * @param int $guid ElggFile GUID
+ *
+ * @return bool
+ */
+function file_delete($guid) {
+ if ($file = get_entity($guid)) {
+ if ($file->canEdit()) {
+ $thumbnail = $file->thumbnail;
+ $smallthumb = $file->smallthumb;
+ $largethumb = $file->largethumb;
+ if ($thumbnail) {
+ $delfile = new ElggFile();
+ $delfile->owner_guid = $file->owner_guid;
+ $delfile->setFilename($thumbnail);
+ $delfile->delete();
}
- if ($newheight > $maxheight) {
- $newwidth = floor($newwidth * ($maxheight / $newheight));
- $newheight = $maxheight;
+ if ($smallthumb) {
+ $delfile = new ElggFile();
+ $delfile->owner_guid = $file->owner_guid;
+ $delfile->setFilename($smallthumb);
+ $delfile->delete();
}
-
- $accepted_formats = array(
- 'image/jpeg' => 'jpeg',
- 'image/png' => 'png',
- 'image/gif' => 'gif'
- );
-
- // If it's a file we can manipulate ...
- if (array_key_exists($imgsizearray['mime'],$accepted_formats)) {
-
- $function = "imagecreatefrom" . $accepted_formats[$imgsizearray['mime']];
- $newimage = imagecreatetruecolor($newwidth,$newheight);
-
- if (is_callable($function) && $oldimage = $function($input_name)) {
-
- // Crop the image if we need a square
- if ($square) {
- if ($x1 == 0 && $y1 == 0 && $x2 == 0 && $y2 ==0) {
- $widthoffset = floor(($imgsizearray[0] - $width) / 2);
- $heightoffset = floor(($imgsizearray[1] - $height) / 2);
- } else {
- $widthoffset = $x1;
- $heightoffset = $y1;
- $width = ($x2 - $x1);
- $height = $width;
- }
- } else {
- if ($x1 == 0 && $y1 == 0 && $x2 == 0 && $y2 ==0) {
- $widthoffset = 0;
- $heightoffset = 0;
- } else {
- $widthoffset = $x1;
- $heightoffset = $y1;
- $width = ($x2 - $x1);
- $height = ($y2 - $y1);
- }
- }//else {
- // Resize and return the image contents!
- imagecopyresampled($newimage, $oldimage, 0,0,$widthoffset,$heightoffset,$newwidth,$newheight,$width,$height);
- //}
-
- // imagecopyresized($newimage, $oldimage, 0,0,0,0,$newwidth,$newheight,$width,$height);
- ob_start();
- imagejpeg($newimage, null, 90);
- $jpeg = ob_get_clean();
- return $jpeg;
-
- }
-
+ if ($largethumb) {
+ $delfile = new ElggFile();
+ $delfile->owner_guid = $file->owner_guid;
+ $delfile->setFilename($largethumb);
+ $delfile->delete();
}
-
+
+ return $file->delete();
}
-
- return false;
- }
-
+ }
- /// Variable holding the default datastore
- $DEFAULT_FILE_STORE = NULL;
-
- /**
- * Return the default filestore.
- *
- * @return ElggFilestore
- */
- function get_default_filestore()
- {
- global $DEFAULT_FILE_STORE;
-
- return $DEFAULT_FILE_STORE;
+ return false;
+}
+
+/**
+ * Returns an overall file type from the mimetype
+ *
+ * @param string $mimetype The MIME type
+ *
+ * @return string The overall type
+ */
+function file_get_general_file_type($mimetype) {
+ switch($mimetype) {
+
+ case "application/msword":
+ return "document";
+ break;
+ case "application/pdf":
+ return "document";
+ break;
}
-
- /**
- * Set the default filestore for the system.
- */
- function set_default_filestore(ElggFilestore $filestore)
- {
- global $DEFAULT_FILE_STORE;
-
- $DEFAULT_FILE_STORE = $filestore;
-
- return true;
+
+ if (substr_count($mimetype, 'text/')) {
+ return "document";
}
- /**
- * Run once and only once.
- */
- function filestore_run_once()
- {
- // Register a class
- add_subtype("object", "file", "ElggFile");
+ if (substr_count($mimetype, 'audio/')) {
+ return "audio";
}
-
- /**
- * Initialise the file modules.
- * Listens to system boot and registers any appropriate file types and classes
- */
- function filestore_init()
- {
- global $CONFIG;
-
- // Now register a default filestore
+
+ if (substr_count($mimetype, 'image/')) {
+ return "image";
+ }
+
+ if (substr_count($mimetype, 'video/')) {
+ return "video";
+ }
+
+ if (substr_count($mimetype, 'opendocument')) {
+ return "document";
+ }
+
+ return "general";
+}
+
+/**
+ * Delete a directory and all its contents
+ *
+ * @param string $directory Directory to delete
+ *
+ * @return bool
+ */
+function delete_directory($directory) {
+ // sanity check: must be a directory
+ if (!$handle = opendir($directory)) {
+ return FALSE;
+ }
+
+ // loop through all files
+ while (($file = readdir($handle)) !== FALSE) {
+ if (in_array($file, array('.', '..'))) {
+ continue;
+ }
+
+ $path = "$directory/$file";
+ if (is_dir($path)) {
+ // recurse down through directory
+ if (!delete_directory($path)) {
+ return FALSE;
+ }
+ } else {
+ // delete file
+ unlink($path);
+ }
+ }
+
+ // remove empty directory
+ closedir($handle);
+ return rmdir($directory);
+}
+
+/**
+ * Removes all user files
+ *
+ * @warning This only deletes the physical files and not their entities.
+ * This will result in FileExceptions being thrown. Don't use this function.
+ *
+ * @param ElggUser $user And ElggUser
+ *
+ * @return void
+ */
+function clear_user_files($user) {
+ global $CONFIG;
+
+ $time_created = date('Y/m/d', (int)$user->time_created);
+ $file_path = "$CONFIG->dataroot$time_created/$user->guid";
+ if (file_exists($file_path)) {
+ delete_directory($file_path);
+ }
+}
+
+
+/// Variable holding the default datastore
+$DEFAULT_FILE_STORE = NULL;
+
+/**
+ * Return the default filestore.
+ *
+ * @return ElggFilestore
+ */
+function get_default_filestore() {
+ global $DEFAULT_FILE_STORE;
+
+ return $DEFAULT_FILE_STORE;
+}
+
+/**
+ * Set the default filestore for the system.
+ *
+ * @param ElggFilestore $filestore An ElggFilestore object.
+ *
+ * @return true
+ */
+function set_default_filestore(ElggFilestore $filestore) {
+ global $DEFAULT_FILE_STORE;
+
+ $DEFAULT_FILE_STORE = $filestore;
+
+ return true;
+}
+
+/**
+ * Register entity type objects, subtype file as
+ * ElggFile.
+ *
+ * @return void
+ * @access private
+ */
+function filestore_run_once() {
+ // Register a class
+ add_subtype("object", "file", "ElggFile");
+}
+
+/**
+ * Initialise the file modules.
+ * Listens to system init and configures the default filestore
+ *
+ * @return void
+ * @access private
+ */
+function filestore_init() {
+ global $CONFIG;
+
+ // Now register a default filestore
+ if (isset($CONFIG->dataroot)) {
set_default_filestore(new ElggDiskFilestore($CONFIG->dataroot));
-
- // Now run this stuff, but only once
- run_function_once("filestore_run_once");
}
- // Register a startup event
- register_elgg_event_handler('init','system','filestore_init',100);
-?> \ No newline at end of file
+ // Now run this stuff, but only once
+ run_function_once("filestore_run_once");
+}
+
+/**
+ * Unit tests for files
+ *
+ * @param string $hook unit_test
+ * @param string $type system
+ * @param mixed $value Array of tests
+ * @param mixed $params Params
+ *
+ * @return array
+ * @access private
+ */
+function filestore_test($hook, $type, $value, $params) {
+ global $CONFIG;
+ $value[] = "{$CONFIG->path}engine/tests/objects/filestore.php";
+ return $value;
+}
+
+
+// Register a startup event
+elgg_register_event_handler('init', 'system', 'filestore_init', 100);
+
+// Unit testing
+elgg_register_plugin_hook_handler('unit_test', 'system', 'filestore_test');
generated by cgit v1.2.3 (git 2.39.1) at 2025-11-13 13:06:51 +0000