friendica/src/Model/Photo.php

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<?php
/**
* @file src/Model/Photo.php
* @brief This file contains the Photo class for database interface
*/
namespace Friendica\Model;
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use Friendica\BaseObject;
use Friendica\Core\Cache;
use Friendica\Core\Config;
use Friendica\Core\L10n;
use Friendica\Core\Logger;
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use Friendica\Core\StorageManager;
use Friendica\Core\System;
use Friendica\Database\DBA;
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use Friendica\Database\DBStructure;
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use Friendica\Model\Storage\IStorage;
use Friendica\Object\Image;
use Friendica\Protocol\DFRN;
use Friendica\Util\DateTimeFormat;
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use Friendica\Util\Network;
use Friendica\Util\Security;
use Friendica\Util\Strings;
require_once "include/dba.php";
/**
* Class to handle photo dabatase table
*/
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class Photo extends BaseObject
{
/**
* @brief Select rows from the photo table and returns them as array
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*
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* @param array $fields Array of selected fields, empty for all
* @param array $conditions Array of fields for conditions
* @param array $params Array of several parameters
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*
* @return boolean|array
*
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* @throws \Exception
* @see \Friendica\Database\DBA::selectToArray
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*/
public static function selectToArray(array $fields = [], array $conditions = [], array $params = [])
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{
if (empty($fields)) {
$fields = self::getFields();
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}
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return DBA::selectToArray('photo', $fields, $conditions, $params);
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}
/**
* @brief Retrieve a single record from the photo table
*
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* @param array $fields Array of selected fields, empty for all
* @param array $conditions Array of fields for conditions
* @param array $params Array of several parameters
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*
* @return bool|array
*
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* @throws \Exception
* @see \Friendica\Database\DBA::select
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*/
public static function selectFirst(array $fields = [], array $conditions = [], array $params = [])
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{
if (empty($fields)) {
$fields = self::getFields();
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}
return DBA::selectFirst("photo", $fields, $conditions, $params);
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}
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/**
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* @brief Get photos for user id
*
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* @param integer $uid User id
* @param string $resourceid Rescource ID of the photo
* @param array $conditions Array of fields for conditions
* @param array $params Array of several parameters
*
* @return bool|array
*
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* @throws \Exception
* @see \Friendica\Database\DBA::select
*/
public static function getPhotosForUser($uid, $resourceid, array $conditions = [], array $params = [])
{
$conditions["resource-id"] = $resourceid;
$conditions["uid"] = $uid;
return self::selectToArray([], $conditions, $params);
}
/**
* @brief Get a photo for user id
*
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* @param integer $uid User id
* @param string $resourceid Rescource ID of the photo
* @param integer $scale Scale of the photo. Defaults to 0
* @param array $conditions Array of fields for conditions
* @param array $params Array of several parameters
*
* @return bool|array
*
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* @throws \Exception
* @see \Friendica\Database\DBA::select
*/
public static function getPhotoForUser($uid, $resourceid, $scale = 0, array $conditions = [], array $params = [])
{
$conditions["resource-id"] = $resourceid;
$conditions["uid"] = $uid;
$conditions["scale"] = $scale;
return self::selectFirst([], $conditions, $params);
}
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/**
* @brief Get a single photo given resource id and scale
*
* This method checks for permissions. Returns associative array
* on success, "no sign" image info, if user has no permission,
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* false if photo does not exists
*
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* @param string $resourceid Rescource ID of the photo
* @param integer $scale Scale of the photo. Defaults to 0
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*
* @return boolean|array
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* @throws \Exception
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*/
public static function getPhoto($resourceid, $scale = 0)
{
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$r = self::selectFirst(["uid", "allow_cid", "allow_gid", "deny_cid", "deny_gid"], ["resource-id" => $resourceid]);
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if ($r === false) {
return false;
}
$uid = $r["uid"];
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// This is the first place, when retrieving just a photo, that we know who owns the photo.
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// Check if the photo is public (empty allow and deny means public), if so, skip auth attempt, if not
// make sure that the requester's session is appropriately authenticated to that user
// otherwise permissions checks done by getPermissionsSQLByUserId() won't work correctly
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if (!empty($r["allow_cid"]) || !empty($r["allow_gid"]) || !empty($r["deny_cid"]) || !empty($r["deny_gid"])) {
$r = DBA::selectFirst("user", ["nickname"], ["uid" => $uid], []);
// this will either just return (if auth all ok) or will redirect and exit (starting over)
DFRN::autoRedir(self::getApp(), $r["nickname"]);
}
$sql_acl = Security::getPermissionsSQLByUserId($uid);
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$conditions = [
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"`resource-id` = ? AND `scale` <= ? " . $sql_acl,
$resourceid, $scale
];
$params = ["order" => ["scale" => true]];
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$photo = self::selectFirst([], $conditions, $params);
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return $photo;
}
/**
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* @brief Check if photo with given conditions exists
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*
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* @param array $conditions Array of extra conditions
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*
* @return boolean
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* @throws \Exception
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*/
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public static function exists(array $conditions)
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{
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return DBA::exists("photo", $conditions);
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}
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/**
* @brief Get Image object for given row id. null if row id does not exist
*
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* @param array $photo Photo data. Needs at least 'id', 'type', 'backend-class', 'backend-ref'
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*
* @return \Friendica\Object\Image
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* @throws \Friendica\Network\HTTPException\InternalServerErrorException
* @throws \ImagickException
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*/
public static function getImageForPhoto(array $photo)
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{
$data = "";
if ($photo["backend-class"] == "") {
// legacy data storage in "data" column
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$i = self::selectFirst(["data"], ["id" => $photo["id"]]);
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if ($i === false) {
return null;
}
$data = $i["data"];
} else {
$backendClass = $photo["backend-class"];
$backendRef = $photo["backend-ref"];
$data = $backendClass::get($backendRef);
}
if ($data === "") {
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return null;
}
return new Image($data, $photo["type"]);
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}
/**
* @brief Return a list of fields that are associated with the photo table
*
* @return array field list
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* @throws \Exception
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*/
private static function getFields()
{
$allfields = DBStructure::definition(self::getApp()->getBasePath(), false);
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$fields = array_keys($allfields["photo"]["fields"]);
array_splice($fields, array_search("data", $fields), 1);
return $fields;
}
/**
* @brief Construct a photo array for a system resource image
*
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* @param string $filename Image file name relative to code root
* @param string $mimetype Image mime type. Defaults to "image/jpeg"
*
* @return array
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* @throws \Exception
*/
public static function createPhotoForSystemResource($filename, $mimetype = "image/jpeg")
{
$fields = self::getFields();
$values = array_fill(0, count($fields), "");
$photo = array_combine($fields, $values);
$photo["backend-class"] = Storage\SystemResource::class;
$photo["backend-ref"] = $filename;
$photo["type"] = $mimetype;
$photo["cacheable"] = false;
return $photo;
}
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/**
* @brief store photo metadata in db and binary in default backend
*
* @param Image $Image Image object with data
* @param integer $uid User ID
* @param integer $cid Contact ID
* @param integer $rid Resource ID
* @param string $filename Filename
* @param string $album Album name
* @param integer $scale Scale
* @param integer $profile Is a profile image? optional, default = 0
* @param string $allow_cid Permissions, allowed contacts. optional, default = ""
* @param string $allow_gid Permissions, allowed groups. optional, default = ""
* @param string $deny_cid Permissions, denied contacts.optional, default = ""
* @param string $deny_gid Permissions, denied greoup.optional, default = ""
* @param string $desc Photo caption. optional, default = ""
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*
* @return boolean True on success
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* @throws \Friendica\Network\HTTPException\InternalServerErrorException
*/
public static function store(Image $Image, $uid, $cid, $rid, $filename, $album, $scale, $profile = 0, $allow_cid = "", $allow_gid = "", $deny_cid = "", $deny_gid = "", $desc = "")
{
$photo = self::selectFirst(["guid"], ["`resource-id` = ? AND `guid` != ?", $rid, ""]);
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if (DBA::isResult($photo)) {
$guid = $photo["guid"];
} else {
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$guid = System::createGUID();
}
$existing_photo = self::selectFirst(["id", "created", "backend-class", "backend-ref"], ["resource-id" => $rid, "uid" => $uid, "contact-id" => $cid, "scale" => $scale]);
$created = DateTimeFormat::utcNow();
if (DBA::isResult($existing_photo)) {
$created = $existing_photo["created"];
}
// Get defined storage backend.
// if no storage backend, we use old "data" column in photo table.
// if is an existing photo, reuse same backend
$data = "";
$backend_ref = "";
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/** @var IStorage $backend_class */
if (DBA::isResult($existing_photo)) {
$backend_ref = (string)$existing_photo["backend-ref"];
$backend_class = (string)$existing_photo["backend-class"];
} else {
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$backend_class = StorageManager::getBackend();
}
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if ($backend_class === "") {
$data = $Image->asString();
} else {
$backend_ref = $backend_class::put($Image->asString(), $backend_ref);
}
$fields = [
"uid" => $uid,
"contact-id" => $cid,
"guid" => $guid,
"resource-id" => $rid,
"created" => $created,
"edited" => DateTimeFormat::utcNow(),
"filename" => basename($filename),
"type" => $Image->getType(),
"album" => $album,
"height" => $Image->getHeight(),
"width" => $Image->getWidth(),
"datasize" => strlen($Image->asString()),
"data" => $data,
"scale" => $scale,
"profile" => $profile,
"allow_cid" => $allow_cid,
"allow_gid" => $allow_gid,
"deny_cid" => $deny_cid,
"deny_gid" => $deny_gid,
"desc" => $desc,
"backend-class" => $backend_class,
"backend-ref" => $backend_ref
];
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if (DBA::isResult($existing_photo)) {
$r = DBA::update("photo", $fields, ["id" => $existing_photo["id"]]);
} else {
$r = DBA::insert("photo", $fields);
}
return $r;
}
/**
* @brief Delete info from table and data from storage
*
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* @param array $conditions Field condition(s)
* @param array $options Options array, Optional
*
* @return boolean
*
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* @throws \Exception
* @see \Friendica\Database\DBA::delete
*/
public static function delete(array $conditions, array $options = [])
{
// get photo to delete data info
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$photos = self::selectToArray(['backend-class', 'backend-ref'], $conditions);
foreach($photos as $photo) {
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/** @var IStorage $backend_class */
$backend_class = (string)$photo["backend-class"];
if ($backend_class !== "") {
$backend_class::delete($photo["backend-ref"]);
}
}
return DBA::delete("photo", $conditions, $options);
}
/**
* @brief Update a photo
*
* @param array $fields Contains the fields that are updated
* @param array $conditions Condition array with the key values
* @param Image $img Image to update. Optional, default null.
* @param array|boolean $old_fields Array with the old field values that are about to be replaced (true = update on duplicate)
*
* @return boolean Was the update successfull?
*
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* @throws \Friendica\Network\HTTPException\InternalServerErrorException
* @see \Friendica\Database\DBA::update
*/
public static function update($fields, $conditions, Image $img = null, array $old_fields = [])
{
if (!is_null($img)) {
// get photo to update
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$photos = self::selectToArray(['backend-class', 'backend-ref'], $conditions);
foreach($photos as $photo) {
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/** @var IStorage $backend_class */
$backend_class = (string)$photo["backend-class"];
if ($backend_class !== "") {
$fields["backend-ref"] = $backend_class::put($img->asString(), $photo["backend-ref"]);
} else {
$fields["data"] = $img->asString();
}
}
$fields['updated'] = DateTimeFormat::utcNow();
}
$fields['edited'] = DateTimeFormat::utcNow();
return DBA::update("photo", $fields, $conditions, $old_fields);
}
/**
* @param string $image_url Remote URL
* @param integer $uid user id
* @param integer $cid contact id
* @param boolean $quit_on_error optional, default false
* @return array
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* @throws \Friendica\Network\HTTPException\InternalServerErrorException
* @throws \ImagickException
*/
public static function importProfilePhoto($image_url, $uid, $cid, $quit_on_error = false)
{
$thumb = "";
$micro = "";
$photo = DBA::selectFirst(
"photo", ["resource-id"], ["uid" => $uid, "contact-id" => $cid, "scale" => 4, "album" => "Contact Photos"]
);
if (!empty($photo['resource-id'])) {
$hash = $photo["resource-id"];
} else {
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$hash = self::newResource();
}
$photo_failure = false;
$filename = basename($image_url);
if (!empty($image_url)) {
$ret = Network::curl($image_url, true);
$img_str = $ret->getBody();
$type = $ret->getContentType();
} else {
$img_str = '';
}
if ($quit_on_error && ($img_str == "")) {
return false;
}
if (empty($type)) {
$type = Image::guessType($image_url, true);
}
$Image = new Image($img_str, $type);
if ($Image->isValid()) {
$Image->scaleToSquare(300);
$r = self::store($Image, $uid, $cid, $hash, $filename, "Contact Photos", 4);
if ($r === false) {
$photo_failure = true;
}
$Image->scaleDown(80);
$r = self::store($Image, $uid, $cid, $hash, $filename, "Contact Photos", 5);
if ($r === false) {
$photo_failure = true;
}
$Image->scaleDown(48);
$r = self::store($Image, $uid, $cid, $hash, $filename, "Contact Photos", 6);
if ($r === false) {
$photo_failure = true;
}
$suffix = "?ts=" . time();
$image_url = System::baseUrl() . "/photo/" . $hash . "-4." . $Image->getExt() . $suffix;
$thumb = System::baseUrl() . "/photo/" . $hash . "-5." . $Image->getExt() . $suffix;
$micro = System::baseUrl() . "/photo/" . $hash . "-6." . $Image->getExt() . $suffix;
// Remove the cached photo
$a = \get_app();
$basepath = $a->getBasePath();
if (is_dir($basepath . "/photo")) {
$filename = $basepath . "/photo/" . $hash . "-4." . $Image->getExt();
if (file_exists($filename)) {
unlink($filename);
}
$filename = $basepath . "/photo/" . $hash . "-5." . $Image->getExt();
if (file_exists($filename)) {
unlink($filename);
}
$filename = $basepath . "/photo/" . $hash . "-6." . $Image->getExt();
if (file_exists($filename)) {
unlink($filename);
}
}
} else {
$photo_failure = true;
}
if ($photo_failure && $quit_on_error) {
return false;
}
if ($photo_failure) {
$image_url = System::baseUrl() . "/images/person-300.jpg";
$thumb = System::baseUrl() . "/images/person-80.jpg";
$micro = System::baseUrl() . "/images/person-48.jpg";
}
return [$image_url, $thumb, $micro];
}
/**
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* @param array $exifCoord coordinate
* @param string $hemi hemi
* @return float
*/
public static function getGps($exifCoord, $hemi)
{
$degrees = count($exifCoord) > 0 ? self::gps2Num($exifCoord[0]) : 0;
$minutes = count($exifCoord) > 1 ? self::gps2Num($exifCoord[1]) : 0;
$seconds = count($exifCoord) > 2 ? self::gps2Num($exifCoord[2]) : 0;
$flip = ($hemi == "W" || $hemi == "S") ? -1 : 1;
return floatval($flip * ($degrees + ($minutes / 60) + ($seconds / 3600)));
}
/**
* @param string $coordPart coordPart
* @return float
*/
private static function gps2Num($coordPart)
{
$parts = explode("/", $coordPart);
if (count($parts) <= 0) {
return 0;
}
if (count($parts) == 1) {
return $parts[0];
}
return floatval($parts[0]) / floatval($parts[1]);
}
/**
* @brief Fetch the photo albums that are available for a viewer
*
* The query in this function is cost intensive, so it is cached.
*
* @param int $uid User id of the photos
* @param bool $update Update the cache
*
* @return array Returns array of the photo albums
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* @throws \Friendica\Network\HTTPException\InternalServerErrorException
*/
public static function getAlbums($uid, $update = false)
{
$sql_extra = Security::getPermissionsSQLByUserId($uid);
$key = "photo_albums:".$uid.":".local_user().":".remote_user();
$albums = Cache::get($key);
if (is_null($albums) || $update) {
if (!Config::get("system", "no_count", false)) {
/// @todo This query needs to be renewed. It is really slow
// At this time we just store the data in the cache
$albums = q("SELECT COUNT(DISTINCT `resource-id`) AS `total`, `album`, ANY_VALUE(`created`) AS `created`
FROM `photo`
WHERE `uid` = %d AND `album` != '%s' AND `album` != '%s' $sql_extra
GROUP BY `album` ORDER BY `created` DESC",
intval($uid),
DBA::escape("Contact Photos"),
DBA::escape(L10n::t("Contact Photos"))
);
} else {
// This query doesn't do the count and is much faster
$albums = q("SELECT DISTINCT(`album`), '' AS `total`
FROM `photo` USE INDEX (`uid_album_scale_created`)
WHERE `uid` = %d AND `album` != '%s' AND `album` != '%s' $sql_extra",
intval($uid),
DBA::escape("Contact Photos"),
DBA::escape(L10n::t("Contact Photos"))
);
}
Cache::set($key, $albums, Cache::DAY);
}
return $albums;
}
/**
* @param int $uid User id of the photos
* @return void
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* @throws \Exception
*/
public static function clearAlbumCache($uid)
{
$key = "photo_albums:".$uid.":".local_user().":".remote_user();
Cache::set($key, null, Cache::DAY);
}
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/**
* Generate a unique photo ID.
*
* @return string
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* @throws \Exception
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*/
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public static function newResource()
{
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return System::createGUID(32, false);
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}
/**
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* Changes photo permissions that had been embedded in a post
*
* @todo This function currently does have some flaws:
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* - Sharing a post with a forum will create a photo that only the forum can see.
* - Sharing a photo again that been shared non public before doesn't alter the permissions.
*
* @return string
* @throws \Exception
*/
public static function setPermissionFromBody($body, $uid, $original_contact_id, $str_contact_allow, $str_group_allow, $str_contact_deny, $str_group_deny)
{
// Simplify image codes
$img_body = preg_replace("/\[img\=([0-9]*)x([0-9]*)\](.*?)\[\/img\]/ism", '[img]$3[/img]', $body);
$img_body = preg_replace("/\[img\=(.*?)\](.*?)\[\/img\]/ism", '[img]$1[/img]', $img_body);
// Search for images
if (!preg_match_all("/\[img\](.*?)\[\/img\]/", $img_body, $match)) {
return false;
}
$images = $match[1];
if (empty($images)) {
return false;
}
foreach ($images as $image) {
if (!stristr($image, System::baseUrl() . '/photo/')) {
continue;
}
$image_uri = substr($image,strrpos($image,'/') + 1);
$image_uri = substr($image_uri,0, strpos($image_uri,'-'));
if (!strlen($image_uri)) {
continue;
}
// Ensure to only modify photos that you own
$srch = '<' . intval($original_contact_id) . '>';
$condition = [
'allow_cid' => $srch, 'allow_gid' => '', 'deny_cid' => '', 'deny_gid' => '',
'resource-id' => $image_uri, 'uid' => $uid
];
if (!Photo::exists($condition)) {
continue;
}
$fields = ['allow_cid' => $str_contact_allow, 'allow_gid' => $str_group_allow,
'deny_cid' => $str_contact_deny, 'deny_gid' => $str_group_deny];
$condition = ['resource-id' => $image_uri, 'uid' => $uid];
Logger::info('Set permissions', ['condition' => $condition, 'permissions' => $fields]);
Photo::update($fields, $condition);
}
return true;
}
/**
* Strips known picture extensions from picture links
*
* @param string $name Picture link
* @return string stripped picture link
* @throws \Exception
*/
public static function stripExtension($name)
{
$name = str_replace([".jpg", ".png", ".gif"], ["", "", ""], $name);
foreach (Image::supportedTypes() as $m => $e) {
$name = str_replace("." . $e, "", $name);
}
return $name;
}
/**
* Returns the GUID from picture links
*
* @param string $name Picture link
* @return string GUID
* @throws \Exception
*/
public static function getGUID($name)
{
$a = \get_app();
$base = $a->getBaseURL();
$guid = str_replace([Strings::normaliseLink($base), '/photo/'], '', Strings::normaliseLink($name));
$guid = self::stripExtension($guid);
if (substr($guid, -2, 1) != "-") {
return '';
}
$scale = intval(substr($guid, -1, 1));
if (empty($scale)) {
return '';
}
$guid = substr($guid, 0, -2);
return $guid;
}
}