src/Model/Photo.php

   1 <?php
   2
   3 /**
   4  * @file src/Model/Photo.php
   5  * @brief This file contains the Photo class for database interface
   6  */
   7 namespace Friendica\Model;
   8
   9 use Friendica\BaseObject;
  10 use Friendica\Core\Cache;
  11 use Friendica\Core\Config;
  12 use Friendica\Core\L10n;
  13 use Friendica\Core\System;
  14 use Friendica\Core\StorageManager;
  15 use Friendica\Database\DBA;
  16 use Friendica\Database\DBStructure;
  17 use Friendica\Object\Image;
  18 use Friendica\Util\DateTimeFormat;
  19 use Friendica\Util\Network;
  20 use Friendica\Util\Security;
  21
  22 require_once "include/dba.php";
  23
  24 /**
  25  * Class to handle photo dabatase table
  26  */
  27 class Photo extends BaseObject
  28 {
  29         /**
  30          * @brief Select rows from the photo table
  31          *
  32          * @param array  $fields     Array of selected fields, empty for all
  33          * @param array  $conditions Array of fields for conditions
  34          * @param array  $params     Array of several parameters
  35          *
  36          * @return boolean|array
  37          *
  38          * @see \Friendica\Database\DBA::select
  39          */
  40         public static function select(array $fields = [], array $conditions = [], array $params = [])
  41         {
  42                 if (empty($fields)) {
  43                         $selected = self::getFields();
  44                 }
  45
  46                 $r = DBA::select("photo", $fields, $conditions, $params);
  47                 return DBA::toArray($r);
  48         }
  49
  50         /**
  51          * @brief Retrieve a single record from the photo table
  52          *
  53          * @param array  $fields     Array of selected fields, empty for all
  54          * @param array  $conditions Array of fields for conditions
  55          * @param array  $params     Array of several parameters
  56          *
  57          * @return bool|array
  58          *
  59          * @see \Friendica\Database\DBA::select
  60          */
  61         public static function selectFirst(array $fields = [], array $conditions = [], array $params = [])
  62         {
  63                 if (empty($fields)) {
  64                         $fields = self::getFields();
  65                 }
  66
  67                 return DBA::selectFirst("photo", $fields, $conditions, $params);
  68         }
  69
  70         /**
  71          * @brief Get photos for user id
  72          *
  73          * @param integer  $uid          User id
  74          * @param string   $resourceid   Rescource ID of the photo
  75          * @param array    $conditions   Array of fields for conditions
  76          * @param array    $params       Array of several parameters
  77          *
  78          * @return bool|array
  79          *
  80          * @see \Friendica\Database\DBA::select
  81          */
  82         public static function getPhotosForUser($uid, $resourceid, array $conditions = [], array $params = [])
  83         {
  84                 $conditions["resource-id"] = $resourceid;
  85                 $conditions["uid"] = $uid;
  86
  87                 return self::select([], $conditions, $params);
  88         }
  89
  90         /**
  91          * @brief Get a photo for user id
  92          *
  93          * @param integer  $uid          User id
  94          * @param string   $resourceid   Rescource ID of the photo
  95          * @param integer  $scale        Scale of the photo. Defaults to 0
  96          * @param array    $conditions   Array of fields for conditions
  97          * @param array    $params       Array of several parameters
  98          *
  99          * @return bool|array
 100          *
 101          * @see \Friendica\Database\DBA::select
 102          */
 103         public static function getPhotoForUser($uid, $resourceid, $scale = 0, array $conditions = [], array $params = [])
 104         {
 105                 $conditions["resource-id"] = $resourceid;
 106                 $conditions["uid"] = $uid;
 107                 $conditions["scale"] = $scale;
 108
 109                 return self::selectFirst([], $conditions, $params);
 110         }
 111
 112         /**
 113          * @brief Get a single photo given resource id and scale
 114          *
 115          * This method checks for permissions. Returns associative array
 116          * on success, "no sign" image info, if user has no permission,
 117          * false if photo does not exists
 118          *
 119          * @param string  $resourceid  Rescource ID of the photo
 120          * @param integer $scale       Scale of the photo. Defaults to 0
 121          *
 122          * @return boolean|array
 123          */
 124         public static function getPhoto($resourceid, $scale = 0)
 125         {
 126                 $r = self::selectFirst(["uid"], ["resource-id" => $resourceid]);
 127                 if ($r === false) {
 128                         return false;
 129                 }
 130
 131                 $sql_acl = Security::getPermissionsSQLByUserId($r["uid"]);
 132
 133                 $conditions = [
 134                         "`resource-id` = ? AND `scale` <= ? " . $sql_acl,
 135                         $resourceid, $scale
 136                 ];
 137
 138                 $params = ["order" => ["scale" => true]];
 139
 140                 $photo = self::selectFirst([], $conditions, $params);
 141                 if ($photo === false) {
 142                         return self::createPhotoForSystemResource("images/nosign.jpg");
 143                 }
 144                 return $photo;
 145         }
 146
 147         /**
 148          * @brief Check if photo with given resource id exists
 149          *
 150          * @param string  $resourceid  Resource ID of the photo
 151          *
 152          * @return boolean
 153          */
 154         public static function exists($resourceid)
 155         {
 156                 return DBA::count("photo", ["resource-id" => $resourceid]) > 0;
 157         }
 158
 159         /**
 160          * @brief Get Image object for given row id. null if row id does not exist
 161          *
 162          * @param integer  $id  Row id
 163          *
 164          * @return \Friendica\Object\Image
 165          */
 166         public static function getImageForPhoto($photo)
 167         {
 168                 $data = "";
 169                 if ($photo["backend-class"] == "") {
 170                         // legacy data storage in "data" column
 171                         $i = self::selectFirst(["data"], ["id" => $photo["id"]]);
 172                         if ($i === false) {
 173                                 return null;
 174                         }
 175                         $data = $i["data"];
 176                 } else {
 177                         $backendClass = $photo["backend-class"];
 178                         $backendRef = $photo["backend-ref"];
 179                         $data = $backendClass::get($backendRef);
 180                 }
 181
 182                 if ($data === "") {
 183                         return null;
 184                 }
 185                 return new Image($data, $photo["type"]);
 186         }
 187
 188         /**
 189          * @brief Return a list of fields that are associated with the photo table
 190          *
 191          * @return array field list
 192          */
 193         private static function getFields()
 194         {
 195                 $allfields = DBStructure::definition(false);
 196                 $fields = array_keys($allfields["photo"]["fields"]);
 197                 array_splice($fields, array_search("data", $fields), 1);
 198                 return $fields;
 199         }
 200
 201         /**
 202          * @brief Construct a photo array for a system resource image
 203          *
 204          * @param string  $filename  Image file name relative to code root
 205          * @param string  $mimetype  Image mime type. Defaults to "image/jpeg"
 206          *
 207          * @return array
 208          */
 209         public static function createPhotoForSystemResource($filename, $mimetype = "image/jpeg")
 210         {
 211                 $fields = self::getFields();
 212                 $values = array_fill(0, count($fields), "");
 213                 $photo = array_combine($fields, $values);
 214                 $photo["backend-class"] = \Friendica\Model\Storage\SystemResource::class;
 215                 $photo["backend-ref"] = $filename;
 216                 $photo["type"] = $mimetype;
 217                 $photo["cacheable"] = false;
 218                 return $photo;
 219         }
 220
 221
 222         /**
 223          * @brief store photo metadata in db and binary in default backend
 224          *
 225          * @param Image   $Image     Image object with data
 226          * @param integer $uid       User ID
 227          * @param integer $cid       Contact ID
 228          * @param integer $rid       Resource ID
 229          * @param string  $filename  Filename
 230          * @param string  $album     Album name
 231          * @param integer $scale     Scale
 232          * @param integer $profile   Is a profile image? optional, default = 0
 233          * @param string  $allow_cid Permissions, allowed contacts. optional, default = ""
 234          * @param string  $allow_gid Permissions, allowed groups. optional, default = ""
 235          * @param string  $deny_cid  Permissions, denied contacts.optional, default = ""
 236          * @param string  $deny_gid  Permissions, denied greoup.optional, default = ""
 237          * @param string  $desc      Photo caption. optional, default = ""
 238          *
 239          * @return boolean True on success
 240          */
 241         public static function store(Image $Image, $uid, $cid, $rid, $filename, $album, $scale, $profile = 0, $allow_cid = "", $allow_gid = "", $deny_cid = "", $deny_gid = "", $desc = "")
 242         {
 243                 $photo = self::selectFirst(["guid"], ["`resource-id` = ? AND `guid` != ?", $rid, ""]);
 244                 if (DBA::isResult($photo)) {
 245                         $guid = $photo["guid"];
 246                 } else {
 247                         $guid = System::createGUID();
 248                 }
 249
 250                 $existing_photo = self::selectFirst(["id", "created", "backend-class", "backend-ref"], ["resource-id" => $rid, "uid" => $uid, "contact-id" => $cid, "scale" => $scale]);
 251                 $created = DateTimeFormat::utcNow();
 252                 if (DBA::isResult($existing_photo)) {
 253                         $created = $existing_photo["created"];
 254                 }
 255
 256                 // Get defined storage backend.
 257                 // if no storage backend, we use old "data" column in photo table.
 258                 // if is an existing photo, reuse same backend
 259                 $data = "";
 260                 $backend_ref = "";
 261                 $backend_class = "";
 262
 263                 if (DBA::isResult($existing_photo)) {
 264                         $backend_ref = (string)$existing_photo["backend-ref"];
 265                         $backend_class = (string)$existing_photo["backend-class"];
 266                 } else {
 267                         $backend_class = StorageManager::getBackend();
 268                 }
 269                 if ($backend_class === "") {
 270                         $data = $Image->asString();
 271                 } else {
 272                         $backend_ref = $backend_class::put($Image->asString(), $backend_ref);
 273                 }
 274
 275
 276                 $fields = [
 277                         "uid" => $uid,
 278                         "contact-id" => $cid,
 279                         "guid" => $guid,
 280                         "resource-id" => $rid,
 281                         "created" => $created,
 282                         "edited" => DateTimeFormat::utcNow(),
 283                         "filename" => basename($filename),
 284                         "type" => $Image->getType(),
 285                         "album" => $album,
 286                         "height" => $Image->getHeight(),
 287                         "width" => $Image->getWidth(),
 288                         "datasize" => strlen($Image->asString()),
 289                         "data" => $data,
 290                         "scale" => $scale,
 291                         "profile" => $profile,
 292                         "allow_cid" => $allow_cid,
 293                         "allow_gid" => $allow_gid,
 294                         "deny_cid" => $deny_cid,
 295                         "deny_gid" => $deny_gid,
 296                         "desc" => $desc,
 297                         "backend-class" => $backend_class,
 298                         "backend-ref" => $backend_ref
 299                 ];
 300
 301                 if (DBA::isResult($existing_photo)) {
 302                         $r = DBA::update("photo", $fields, ["id" => $existing_photo["id"]]);
 303                 } else {
 304                         $r = DBA::insert("photo", $fields);
 305                 }
 306
 307                 return $r;
 308         }
 309
 310         public static function delete(array $conditions, $options = [])
 311         {
 312                 // get photo to delete data info
 313                 $photos = self::select(["backend-class","backend-ref"], $conditions);
 314
 315                 foreach($photos as $photo) {
 316                         $backend_class = (string)$photo["backend-class"];
 317                         if ($backend_class !== "") {
 318                                 $backend_class::delete($photo["backend-ref"]);
 319                         }
 320                 }
 321
 322                 return DBA::delete("photo", $conditions, $options);
 323         }
 324
 325         /**
 326          * @brief Update a photo
 327          *
 328          * @param array         $fields     Contains the fields that are updated
 329          * @param array         $conditions Condition array with the key values
 330          * @param Image         $img        Image to update. Optional, default null.
 331          * @param array|boolean $old_fields Array with the old field values that are about to be replaced (true = update on duplicate)
 332          *
 333          * @return boolean  Was the update successfull?
 334          *
 335          * @see \Friendica\Database\DBA::update
 336          */
 337         public static function update($fields, $conditions, Image $img = null, array $old_fields = [])
 338         {
 339                 if (!is_null($img)) {
 340                         // get photo to update
 341                         $photos = self::select(["backend-class","backend-ref"], $conditions);
 342
 343                         foreach($photos as $photo) {
 344                                 $backend_class = (string)$photo["backend-class"];
 345                                 if ($backend_class !== "") {
 346                                         $fields["backend-ref"] = $backend_class::put($img->asString(), $photo["backend-ref"]);
 347                                 } else {
 348                                         $fields["data"] = $img->asString();
 349                                 }
 350                         }
 351                 }
 352
 353                 $fields['updated'] = DateTimeFormat::utcNow();
 354
 355                 return DBA::update("photo", $fields, $conditions);
 356         }
 357
 358         /**
 359          * @param string  $image_url     Remote URL
 360          * @param integer $uid           user id
 361          * @param integer $cid           contact id
 362          * @param boolean $quit_on_error optional, default false
 363          * @return array
 364          */
 365         public static function importProfilePhoto($image_url, $uid, $cid, $quit_on_error = false)
 366         {
 367                 $thumb = "";
 368                 $micro = "";
 369
 370                 $photo = DBA::selectFirst(
 371                         "photo", ["resource-id"], ["uid" => $uid, "contact-id" => $cid, "scale" => 4, "album" => "Contact Photos"]
 372                 );
 373                 if (!empty($photo['resource-id'])) {
 374                         $hash = $photo["resource-id"];
 375                 } else {
 376                         $hash = self::newResource();
 377                 }
 378
 379                 $photo_failure = false;
 380
 381                 $filename = basename($image_url);
 382                 $img_str = Network::fetchUrl($image_url, true);
 383
 384                 if ($quit_on_error && ($img_str == "")) {
 385                         return false;
 386                 }
 387
 388                 $type = Image::guessType($image_url, true);
 389                 $Image = new Image($img_str, $type);
 390                 if ($Image->isValid()) {
 391                         $Image->scaleToSquare(300);
 392
 393                         $r = self::store($Image, $uid, $cid, $hash, $filename, "Contact Photos", 4);
 394
 395                         if ($r === false) {
 396                                 $photo_failure = true;
 397                         }
 398
 399                         $Image->scaleDown(80);
 400
 401                         $r = self::store($Image, $uid, $cid, $hash, $filename, "Contact Photos", 5);
 402
 403                         if ($r === false) {
 404                                 $photo_failure = true;
 405                         }
 406
 407                         $Image->scaleDown(48);
 408
 409                         $r = self::store($Image, $uid, $cid, $hash, $filename, "Contact Photos", 6);
 410
 411                         if ($r === false) {
 412                                 $photo_failure = true;
 413                         }
 414
 415                         $suffix = "?ts=" . time();
 416
 417                         $image_url = System::baseUrl() . "/photo/" . $hash . "-4." . $Image->getExt() . $suffix;
 418                         $thumb = System::baseUrl() . "/photo/" . $hash . "-5." . $Image->getExt() . $suffix;
 419                         $micro = System::baseUrl() . "/photo/" . $hash . "-6." . $Image->getExt() . $suffix;
 420
 421                         // Remove the cached photo
 422                         $a = \get_app();
 423                         $basepath = $a->getBasePath();
 424
 425                         if (is_dir($basepath . "/photo")) {
 426                                 $filename = $basepath . "/photo/" . $hash . "-4." . $Image->getExt();
 427                                 if (file_exists($filename)) {
 428                                         unlink($filename);
 429                                 }
 430                                 $filename = $basepath . "/photo/" . $hash . "-5." . $Image->getExt();
 431                                 if (file_exists($filename)) {
 432                                         unlink($filename);
 433                                 }
 434                                 $filename = $basepath . "/photo/" . $hash . "-6." . $Image->getExt();
 435                                 if (file_exists($filename)) {
 436                                         unlink($filename);
 437                                 }
 438                         }
 439                 } else {
 440                         $photo_failure = true;
 441                 }
 442
 443                 if ($photo_failure && $quit_on_error) {
 444                         return false;
 445                 }
 446
 447                 if ($photo_failure) {
 448                         $image_url = System::baseUrl() . "/images/person-300.jpg";
 449                         $thumb = System::baseUrl() . "/images/person-80.jpg";
 450                         $micro = System::baseUrl() . "/images/person-48.jpg";
 451                 }
 452
 453                 return [$image_url, $thumb, $micro];
 454         }
 455
 456         /**
 457          * @param string $exifCoord coordinate
 458          * @param string $hemi      hemi
 459          * @return float
 460          */
 461         public static function getGps($exifCoord, $hemi)
 462         {
 463                 $degrees = count($exifCoord) > 0 ? self::gps2Num($exifCoord[0]) : 0;
 464                 $minutes = count($exifCoord) > 1 ? self::gps2Num($exifCoord[1]) : 0;
 465                 $seconds = count($exifCoord) > 2 ? self::gps2Num($exifCoord[2]) : 0;
 466
 467                 $flip = ($hemi == "W" || $hemi == "S") ? -1 : 1;
 468
 469                 return floatval($flip * ($degrees + ($minutes / 60) + ($seconds / 3600)));
 470         }
 471
 472         /**
 473          * @param string $coordPart coordPart
 474          * @return float
 475          */
 476         private static function gps2Num($coordPart)
 477         {
 478                 $parts = explode("/", $coordPart);
 479
 480                 if (count($parts) <= 0) {
 481                         return 0;
 482                 }
 483
 484                 if (count($parts) == 1) {
 485                         return $parts[0];
 486                 }
 487
 488                 return floatval($parts[0]) / floatval($parts[1]);
 489         }
 490
 491         /**
 492          * @brief Fetch the photo albums that are available for a viewer
 493          *
 494          * The query in this function is cost intensive, so it is cached.
 495          *
 496          * @param int  $uid    User id of the photos
 497          * @param bool $update Update the cache
 498          *
 499          * @return array Returns array of the photo albums
 500          */
 501         public static function getAlbums($uid, $update = false)
 502         {
 503                 $sql_extra = Security::getPermissionsSQLByUserId($uid);
 504
 505                 $key = "photo_albums:".$uid.":".local_user().":".remote_user();
 506                 $albums = Cache::get($key);
 507                 if (is_null($albums) || $update) {
 508                         if (!Config::get("system", "no_count", false)) {
 509                                 /// @todo This query needs to be renewed. It is really slow
 510                                 // At this time we just store the data in the cache
 511                                 $albums = q("SELECT COUNT(DISTINCT `resource-id`) AS `total`, `album`, ANY_VALUE(`created`) AS `created`
 512                                         FROM `photo`
 513                                         WHERE `uid` = %d  AND `album` != '%s' AND `album` != '%s' $sql_extra
 514                                         GROUP BY `album` ORDER BY `created` DESC",
 515                                         intval($uid),
 516                                         DBA::escape("Contact Photos"),
 517                                         DBA::escape(L10n::t("Contact Photos"))
 518                                 );
 519                         } else {
 520                                 // This query doesn't do the count and is much faster
 521                                 $albums = q("SELECT DISTINCT(`album`), '' AS `total`
 522                                         FROM `photo` USE INDEX (`uid_album_scale_created`)
 523                                         WHERE `uid` = %d  AND `album` != '%s' AND `album` != '%s' $sql_extra",
 524                                         intval($uid),
 525                                         DBA::escape("Contact Photos"),
 526                                         DBA::escape(L10n::t("Contact Photos"))
 527                                 );
 528                         }
 529                         Cache::set($key, $albums, Cache::DAY);
 530                 }
 531                 return $albums;
 532         }
 533
 534         /**
 535          * @param int $uid User id of the photos
 536          * @return void
 537          */
 538         public static function clearAlbumCache($uid)
 539         {
 540                 $key = "photo_albums:".$uid.":".local_user().":".remote_user();
 541                 Cache::set($key, null, Cache::DAY);
 542         }
 543
 544         /**
 545          * Generate a unique photo ID.
 546          *
 547          * @return string
 548          */
 549         public static function newResource()
 550         {
 551                 return System::createGUID(32, false);
 552         }
 553 }