Friendica Communications Platform (please note that this is a clone of the repository at github, issues are handled there) https://friendi.ca
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<?php
/**
* @file src/Model/Photo.php
* @brief This file contains the Photo class for database interface
*/
namespace Friendica\Model;
use Friendica\Core\Cache\Cache;
use Friendica\Core\Config;
use Friendica\Core\L10n;
use Friendica\Core\Logger;
use Friendica\Core\System;
use Friendica\Database\DBA;
use Friendica\Database\DBStructure;
use Friendica\DI;
use Friendica\Model\Storage\SystemResource;
use Friendica\Object\Image;
use Friendica\Util\DateTimeFormat;
use Friendica\Util\Images;
use Friendica\Util\Network;
use Friendica\Util\Security;
use Friendica\Util\Strings;
require_once "include/dba.php";
/**
* Class to handle photo dabatase table
*/
class Photo
{
/**
* @brief Select rows from the photo table and returns them as array
*
* @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
*
* @return boolean|array
*
* @throws \Exception
* @see \Friendica\Database\DBA::selectToArray
*/
public static function selectToArray(array $fields = [], array $conditions = [], array $params = [])
{
if (empty($fields)) {
$fields = self::getFields();
}
return DBA::selectToArray('photo', $fields, $conditions, $params);
}
/**
* @brief Retrieve a single record from the photo table
*
* @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
*
* @return bool|array
*
* @throws \Exception
* @see \Friendica\Database\DBA::select
*/
public static function selectFirst(array $fields = [], array $conditions = [], array $params = [])
{
if (empty($fields)) {
$fields = self::getFields();
}
return DBA::selectFirst("photo", $fields, $conditions, $params);
}
/**
* @brief Get photos for user id
*
* @param integer $uid User id
* @param string $resourceid Rescource ID of the photo
* @param array $conditions Array of fields for conditions
* @param array $params Array of several parameters
*
* @return bool|array
*
* @throws \Exception
* @see \Friendica\Database\DBA::select
*/
public static function getPhotosForUser($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
*
* @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 $params Array of several parameters
*
* @return bool|array
*
* @throws \Exception
* @see \Friendica\Database\DBA::select
*/
public static function getPhotoForUser($uid, $resourceid, $scale = 0, array $conditions = [], array $params = [])
{
$conditions["resource-id"] = $resourceid;
$conditions["uid"] = $uid;
$conditions["scale"] = $scale;
return self::selectFirst([], $conditions, $params);
}
/**
* @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,
* false if photo does not exists
*
* @param string $resourceid Rescource ID of the photo
* @param integer $scale Scale of the photo. Defaults to 0
*
* @return boolean|array
* @throws \Exception
*/
public static function getPhoto($resourceid, $scale = 0)
{
$r = self::selectFirst(["uid"], ["resource-id" => $resourceid]);
if (!DBA::isResult($r)) {
return false;
}
$uid = $r["uid"];
$sql_acl = Security::getPermissionsSQLByUserId($uid);
$conditions = ["`resource-id` = ? AND `scale` <= ? " . $sql_acl, $resourceid, $scale];
$params = ["order" => ["scale" => true]];
$photo = self::selectFirst([], $conditions, $params);
return $photo;
}
/**
* @brief Check if photo with given conditions exists
*
* @param array $conditions Array of extra conditions
*
* @return boolean
* @throws \Exception
*/
public static function exists(array $conditions)
{
return DBA::exists("photo", $conditions);
}
/**
* @brief Get Image object for given row id. null if row id does not exist
*
* @param array $photo Photo data. Needs at least 'id', 'type', 'backend-class', 'backend-ref'
*
* @return \Friendica\Object\Image
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
* @throws \ImagickException
*/
public static function getImageForPhoto(array $photo)
{
$backendClass = DI::storageManager()->getByName($photo['backend-class'] ?? '');
if ($backendClass === null) {
// legacy data storage in "data" column
$i = self::selectFirst(['data'], ['id' => $photo['id']]);
if ($i === false) {
return null;
}
$data = $i['data'];
} else {
$backendRef = $photo['backend-ref'] ?? '';
$data = $backendClass->get($backendRef);
}
if (empty($data)) {
return null;
}
return new Image($data, $photo['type']);
}
/**
* @brief Return a list of fields that are associated with the photo table
*
* @return array field list
* @throws \Exception
*/
private static function getFields()
{
$allfields = DBStructure::definition(DI::app()->getBasePath(), false);
$fields = array_keys($allfields["photo"]["fields"]);
array_splice($fields, array_search("data", $fields), 1);
return $fields;
}
/**
* @brief Construct a photo array for a system resource image
*
* @param string $filename Image file name relative to code root
* @param string $mimetype Image mime type. Defaults to "image/jpeg"
*
* @return array
* @throws \Exception
*/
public static function createPhotoForSystemResource($filename, $mimetype = "image/jpeg")
{
$fields = self::getFields();
$values = array_fill(0, count($fields), "");
$photo = array_combine($fields, $values);
$photo['backend-class'] = SystemResource::NAME;
$photo['backend-ref'] = $filename;
$photo['type'] = $mimetype;
$photo['cacheable'] = false;
return $photo;
}
/**
* @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 = ""
*
* @return boolean True on success
* @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` != ?", $rid, ""]);
if (DBA::isResult($photo)) {
$guid = $photo["guid"];
} else {
$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 = "";
$backend_ref = "";
if (DBA::isResult($existing_photo)) {
$backend_ref = (string)$existing_photo["backend-ref"];
$storage = DI::storageManager()->getByName($existing_photo["backend-class"] ?? '');
} else {
$storage = DI::storage();
}
if ($storage === null) {
$data = $Image->asString();
} else {
$backend_ref = $storage->put($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" => $desc,
"backend-class" => (string)$storage,
"backend-ref" => $backend_ref
];
if (DBA::isResult($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
*
* @param array $conditions Field condition(s)
* @param array $options Options array, Optional
*
* @return boolean
*
* @throws \Exception
* @see \Friendica\Database\DBA::delete
*/
public static function delete(array $conditions, array $options = [])
{
// get photo to delete data info
$photos = self::selectToArray(['backend-class', 'backend-ref'], $conditions);
foreach($photos as $photo) {
$backend_class = DI::storageManager()->getByName($photo['backend-class'] ?? '');
if ($backend_class !== null) {
$backend_class->delete($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 $old_fields Array with the old field values that are about to be replaced (true = update on duplicate)
*
* @return boolean Was the update successfull?
*
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
* @see \Friendica\Database\DBA::update
*/
public static function update($fields, $conditions, Image $img = null, array $old_fields = [])
{
if (!is_null($img)) {
// get photo to update
$photos = self::selectToArray(['backend-class', 'backend-ref'], $conditions);
foreach($photos as $photo) {
$backend_class = DI::storageManager()->getByName($photo['backend-class'] ?? '');
if ($backend_class !== null) {
$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 $quit_on_error optional, default false
* @return array
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
* @throws \ImagickException
*/
public static function importProfilePhoto($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'])) {
$resource_id = $photo["resource-id"];
} else {
$resource_id = 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)) {
$type = Images::guessType($image_url, true);
}
$Image = new Image($img_str, $type);
if ($Image->isValid()) {
$Image->scaleToSquare(300);
$r = self::store($Image, $uid, $cid, $resource_id, $filename, "Contact Photos", 4);
if ($r === false) {
$photo_failure = true;
}
$Image->scaleDown(80);
$r = self::store($Image, $uid, $cid, $resource_id, $filename, "Contact Photos", 5);
if ($r === false) {
$photo_failure = true;
}
$Image->scaleDown(48);
$r = self::store($Image, $uid, $cid, $resource_id, $filename, "Contact Photos", 6);
if ($r === false) {
$photo_failure = true;
}
$suffix = "?ts=" . time();
$image_url = DI::baseUrl() . "/photo/" . $resource_id . "-4." . $Image->getExt() . $suffix;
$thumb = DI::baseUrl() . "/photo/" . $resource_id . "-5." . $Image->getExt() . $suffix;
$micro = DI::baseUrl() . "/photo/" . $resource_id . "-6." . $Image->getExt() . $suffix;
// Remove the cached photo
$a = DI::app();
$basepath = $a->getBasePath();
if (is_dir($basepath . "/photo")) {
$filename = $basepath . "/photo/" . $resource_id . "-4." . $Image->getExt();
if (file_exists($filename)) {
unlink($filename);
}
$filename = $basepath . "/photo/" . $resource_id . "-5." . $Image->getExt();
if (file_exists($filename)) {
unlink($filename);
}
$filename = $basepath . "/photo/" . $resource_id . "-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 = DI::baseUrl() . "/images/person-300.jpg";
$thumb = DI::baseUrl() . "/images/person-80.jpg";
$micro = DI::baseUrl() . "/images/person-48.jpg";
}
return [$image_url, $thumb, $micro];
}
/**
* @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 $update Update the cache
*
* @return array Returns array of the photo albums
* @throws \Friendica\Network\HTTPException\InternalServerErrorException
*/
public static function getAlbums($uid, $update = false)
{
$sql_extra = Security::getPermissionsSQLByUserId($uid);
$key = "photo_albums:".$uid.":".local_user().":".remote_user();
$albums = DI::cache()->get($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"))
);
}
DI::cache()->set($key, $albums, Cache::DAY);
}
return $albums;
}
/**
* @param int $uid User id of the photos
* @return void
* @throws \Exception
*/
public static function clearAlbumCache($uid)
{
$key = "photo_albums:".$uid.":".local_user().":".remote_user();
DI::cache()->set($key, null, Cache::DAY);
}
/**
* Generate a unique photo ID.
*
* @return string
* @throws \Exception
*/
public static function newResource()
{
return System::createGUID(32, false);
}
/**
* Extracts the rid from a local photo URI
*
* @param string $image_uri The URI of the photo
* @return string The rid of the photo, or an empty string if the URI is not local
*/
public static function ridFromURI(string $image_uri)
{
if (!stristr($image_uri, DI::baseUrl() . '/photo/')) {
return '';
}
$image_uri = substr($image_uri, strrpos($image_uri, '/') + 1);
$image_uri = substr($image_uri, 0, strpos($image_uri, '-'));
if (!strlen($image_uri)) {
return '';
}
return $image_uri;
}
/**
* Changes photo permissions that had been embedded in a post
*
* @todo This function currently does have some flaws:
* - Sharing a post with a forum will create a photo that only the forum can see.
* - Sharing a photo again that been shared non public before doesn't alter the permissions.
*
* @return string
* @throws \Exception
*/
public static function setPermissionFromBody($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) {
$image_rid = self::ridFromURI($image);
if (empty($image_rid)) {
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_rid, 'uid' => $uid
];
if (!Photo::exists($condition)) {
continue;
}
/// @todo Check if $str_contact_allow does contain a public forum. Then set the permissions to public.
$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_rid, '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 (Images::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)
{
$base = DI::baseUrl()->get();
$guid = str_replace([Strings::normaliseLink($base), '/photo/'], '', Strings::normaliseLink($name));
$guid = self::stripExtension($guid);
if (substr($guid, -2, 1) != "-") {
return '';
}
$scale = intval(substr($guid, -1, 1));
if (!is_numeric($scale)) {
return '';
}
$guid = substr($guid, 0, -2);
return $guid;
}
/**
* Tests if the picture link points to a locally stored picture
*
* @param string $name Picture link
* @return boolean
* @throws \Exception
*/
public static function isLocal($name)
{
$guid = self::getGUID($name);
if (empty($guid)) {
return false;
}
return DBA::exists('photo', ['resource-id' => $guid]);
}
/**
* Tests if the link points to a locally stored picture page
*
* @param string $name Page link
* @return boolean
* @throws \Exception
*/
public static function isLocalPage($name)
{
$base = DI::baseUrl()->get();
$guid = str_replace(Strings::normaliseLink($base), '', Strings::normaliseLink($name));
$guid = preg_replace("=/photos/.*/image/(.*)=ism", '$1', $guid);
if (empty($guid)) {
return false;
}
return DBA::exists('photo', ['resource-id' => $guid]);
}
}