UPSTREAM BASELINE: nextcloud/spreed v22.0.12 (без изменений)

Источник: https://github.com/nextcloud/spreed/archive/refs/tags/v22.0.12.tar.gz С этого коммита ветка официального Nextcloud Talk отрезана (решение владельца 2026-07-06). Все дальнейшие изменения — только наши; версии релизов: 22.0.12-f7.N.
2026-07-06 14:07:50 +00:00
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+<?php
+
+declare(strict_types=1);
+
+/**
+ * SPDX-FileCopyrightText: 2022 Nextcloud GmbH and Nextcloud contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+
+namespace OCA\Talk\Service;
+
+use InvalidArgumentException;
+use OC\Files\Filesystem;
+use OCA\Talk\Room;
+use OCP\Files\IAppData;
+use OCP\Files\NotFoundException;
+use OCP\Files\SimpleFS\InMemoryFile;
+use OCP\Files\SimpleFS\ISimpleFile;
+use OCP\Files\SimpleFS\ISimpleFolder;
+use OCP\IAvatarManager;
+use OCP\IL10N;
+use OCP\IURLGenerator;
+use OCP\IUser;
+use OCP\Security\ISecureRandom;
+
+class AvatarService {
+	public const THEMING_PLACEHOLDER = '{{THEMING}}';
+	public const THEMING_DARK_BACKGROUND = '3B3B3B';
+	public const THEMING_BRIGHT_BACKGROUND = '6B6B6B';
+
+	public function __construct(
+		private IAppData $appData,
+		private IL10N $l,
+		private IURLGenerator $url,
+		private ISecureRandom $random,
+		private RoomService $roomService,
+		private IAvatarManager $avatarManager,
+		private EmojiService $emojiService,
+	) {
+	}
+
+	public function setAvatarFromRequest(Room $room, ?array $file): void {
+		if ($room->getType() === Room::TYPE_ONE_TO_ONE || $room->getType() === Room::TYPE_ONE_TO_ONE_FORMER) {
+			throw new InvalidArgumentException($this->l->t('One-to-one rooms always need to show the other users avatar'));
+		}
+
+		if ($file === null) {
+			throw new InvalidArgumentException($this->l->t('No image file provided'));
+		}
+
+		if (
+			$file['error'] !== 0
+			|| !is_uploaded_file($file['tmp_name'])
+			|| Filesystem::isFileBlacklisted($file['tmp_name'])
+		) {
+			throw new InvalidArgumentException($this->l->t('Invalid file provided'));
+		}
+		if ($file['size'] > 20 * 1024 * 1024) {
+			throw new InvalidArgumentException($this->l->t('File is too big'));
+		}
+
+		$content = file_get_contents($file['tmp_name']);
+		// noopengrep: php.lang.security.unlink-use.unlink-use
+		unlink($file['tmp_name']);
+		$image = new \OCP\Image();
+		$image->loadFromData($content);
+		$image->readExif($content);
+		$this->setAvatar($room, $image);
+	}
+
+	public function setAvatarFromEmoji(Room $room, string $emoji, ?string $color): void {
+		if ($room->getType() === Room::TYPE_ONE_TO_ONE || $room->getType() === Room::TYPE_ONE_TO_ONE_FORMER) {
+			throw new InvalidArgumentException($this->l->t('One-to-one rooms always need to show the other users avatar'));
+		}
+
+		if ($this->emojiService->getFirstCombinedEmoji($emoji) !== $emoji) {
+			throw new InvalidArgumentException($this->l->t('Invalid emoji character'));
+		}
+
+		if ($color === null) {
+			$color = self::THEMING_PLACEHOLDER;
+		} elseif (!preg_match('/^[a-fA-F0-9]{6}$/', $color)) {
+			throw new InvalidArgumentException($this->l->t('Invalid background color'));
+		}
+
+		$content = $this->getEmojiAvatar($emoji, $color);
+
+		$token = $room->getToken();
+		$avatarFolder = $this->getAvatarFolder($token);
+
+		// Delete previous avatars
+		foreach ($avatarFolder->getDirectoryListing() as $file) {
+			$file->delete();
+		}
+
+		$avatarName = $this->random->generate(16, ISecureRandom::CHAR_HUMAN_READABLE) . '.svg';
+		$avatarFolder->newFile($avatarName, $content);
+		$this->roomService->setAvatar($room, $avatarName);
+	}
+
+	public function setAvatar(Room $room, \OCP\Image $image): void {
+		if ($room->getType() === Room::TYPE_ONE_TO_ONE || $room->getType() === Room::TYPE_ONE_TO_ONE_FORMER) {
+			throw new InvalidArgumentException($this->l->t('One-to-one rooms always need to show the other users avatar'));
+		}
+		$image->fixOrientation();
+		if (!($image->height() === $image->width())) {
+			throw new InvalidArgumentException($this->l->t('Avatar image is not square'));
+		}
+
+		if (!$image->valid()) {
+			throw new InvalidArgumentException($this->l->t('Invalid image'));
+		}
+
+		$mimeType = $image->mimeType();
+		$allowedMimeTypes = [
+			'image/jpeg',
+			'image/png',
+		];
+		if (!in_array($mimeType, $allowedMimeTypes)) {
+			throw new InvalidArgumentException($this->l->t('Unknown filetype'));
+		}
+
+
+		$token = $room->getToken();
+		$avatarFolder = $this->getAvatarFolder($token);
+
+		// Delete previous avatars
+		foreach ($avatarFolder->getDirectoryListing() as $file) {
+			$file->delete();
+		}
+
+		$avatarName = $this->random->generate(16, ISecureRandom::CHAR_HUMAN_READABLE);
+		if ($mimeType === 'image/jpeg') {
+			$avatarName .= '.jpg';
+		} else {
+			$avatarName .= '.png';
+		}
+
+		$avatarFolder->newFile($avatarName, $image->data());
+		$this->roomService->setAvatar($room, $avatarName);
+	}
+
+	private function getAvatarFolder(string $token): ISimpleFolder {
+		try {
+			$folder = $this->appData->getFolder('room-avatar');
+		} catch (NotFoundException $e) {
+			$folder = $this->appData->newFolder('room-avatar');
+		}
+		try {
+			$avatarFolder = $folder->getFolder($token);
+		} catch (NotFoundException $e) {
+			$avatarFolder = $folder->newFolder($token);
+		}
+		return $avatarFolder;
+	}
+
+	/**
+	 * https://github.com/sebdesign/cap-height -- for 500px height
+	 * Automated check: https://codepen.io/skjnldsv/pen/PydLBK/
+	 * Noto Sans cap-height is 0.715 and we want a 200px caps height size
+	 * (0.4 letter-to-total-height ratio, 500*0.4=200), so: 200/0.715 = 280px.
+	 * Since we start from the baseline (text-anchor) we need to
+	 * shift the y axis by 100px (half the caps height): 500/2+100=350
+	 *
+	 * Copied from @see \OC\Avatar\Avatar::$svgTemplate with some changes:
+	 * - {font} is injected
+	 * - size fixed to 512
+	 * - font-size reduced to 240
+	 * - font-weight and fill color are removed as they are not applicable
+	 */
+	private string $svgTemplate = '<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+		<svg width="512" height="512" version="1.1" viewBox="0 0 500 500" xmlns="http://www.w3.org/2000/svg">
+			<rect width="100%" height="100%" fill="#{fill}"></rect>
+			<text x="50%" y="330" style="font-size:240px;font-family:{font};text-anchor:middle;">{letter}</text>
+		</svg>';
+
+	public function getAvatar(Room $room, ?IUser $user, bool $darkTheme = false): ISimpleFile {
+		$token = $room->getToken();
+		$avatar = $room->getAvatar();
+		if ($avatar) {
+			try {
+				$folder = $this->appData->getFolder('room-avatar');
+				if ($folder->fileExists($token)) {
+					$file = $folder->getFolder($token)->getFile($avatar);
+
+					if ($file->getMimeType() === 'image/svg+xml' && str_contains($file->getContent(), self::THEMING_PLACEHOLDER)) {
+						$color = $darkTheme ? self::THEMING_DARK_BACKGROUND : self::THEMING_BRIGHT_BACKGROUND;
+						return new InMemoryFile(
+							$file->getName(),
+							str_replace(self::THEMING_PLACEHOLDER, $color, $file->getContent()),
+						);
+					}
+
+					return $file;
+				}
+			} catch (NotFoundException $e) {
+			}
+		}
+
+		// Fallback
+		if ($room->getType() === Room::TYPE_ONE_TO_ONE) {
+			$users = json_decode($room->getName(), true);
+			foreach ($users as $participantId) {
+				if ($user instanceof IUser && $participantId !== $user->getUID()) {
+					$avatar = $this->avatarManager->getAvatar($participantId);
+					return $avatar->getFile(512, $darkTheme);
+				}
+			}
+		}
+		if ($this->emojiService->isValidSingleEmoji(mb_substr($room->getName(), 0, 1))) {
+			return new InMemoryFile(
+				$token,
+				$this->getEmojiAvatar(
+					$this->emojiService->getFirstCombinedEmoji($room->getName()),
+					$darkTheme ? self::THEMING_DARK_BACKGROUND : self::THEMING_BRIGHT_BACKGROUND
+				)
+			);
+		}
+		return new InMemoryFile($token, file_get_contents($this->getAvatarPath($room, $darkTheme)));
+	}
+
+	public function getPersonPlaceholder(bool $darkTheme = false): ISimpleFile {
+		$colorTone = $darkTheme ? 'dark' : 'bright';
+		return new InMemoryFile('fallback', file_get_contents(__DIR__ . '/../../img/icon-conversation-user-' . $colorTone . '.svg'));
+	}
+
+	protected function getEmojiAvatar(string $emoji, string $fillColor): string {
+		return str_replace([
+			'{letter}',
+			'{fill}',
+			'{font}',
+		], [
+			$emoji,
+			$fillColor,
+			implode(',', [
+				"'Segoe UI'",
+				'Roboto',
+				'Oxygen-Sans',
+				'Cantarell',
+				'Ubuntu',
+				"'Helvetica Neue'",
+				'Arial',
+				'sans-serif',
+				"'Noto Color Emoji'",
+				"'Apple Color Emoji'",
+				"'Segoe UI Emoji'",
+				"'Segoe UI Symbol'",
+				"'Noto Sans'",
+			]),
+		], $this->svgTemplate);
+	}
+
+	public function isCustomAvatar(Room $room): bool {
+		return $room->getAvatar() !== '';
+	}
+
+	private function getAvatarPath(Room $room, bool $darkTheme = false): string {
+		$colorTone = $darkTheme ? 'dark' : 'bright';
+		if ($room->getType() === Room::TYPE_CHANGELOG) {
+			return __DIR__ . '/../../img/changelog.svg';
+		}
+		if ($room->getObjectType() === Room::OBJECT_TYPE_FILE) {
+			return __DIR__ . '/../../img/icon-conversation-text-' . $colorTone . '.svg';
+		}
+		if ($room->getObjectType() === Room::OBJECT_TYPE_VIDEO_VERIFICATION) {
+			return __DIR__ . '/../../img/icon-conversation-password-' . $colorTone . '.svg';
+		}
+		if ($room->getObjectType() === Room::OBJECT_TYPE_EMAIL) {
+			return __DIR__ . '/../../img/icon-conversation-mail-' . $colorTone . '.svg';
+		}
+		if (in_array($room->getObjectType(), [Room::OBJECT_TYPE_PHONE_PERSIST, Room::OBJECT_TYPE_PHONE_TEMPORARY, Room::OBJECT_TYPE_PHONE_LEGACY], true)) {
+			return __DIR__ . '/../../img/icon-conversation-phone-' . $colorTone . '.svg';
+		}
+		if ($room->getObjectType() === Room::OBJECT_TYPE_EVENT) {
+			return __DIR__ . '/../../img/icon-conversation-event-' . $colorTone . '.svg';
+		}
+		if ($room->isFederatedConversation()) {
+			return __DIR__ . '/../../img/icon-conversation-federation-' . $colorTone . '.svg';
+		}
+		if ($room->getType() === Room::TYPE_PUBLIC) {
+			return __DIR__ . '/../../img/icon-conversation-public-' . $colorTone . '.svg';
+		}
+		if ($room->getType() === Room::TYPE_ONE_TO_ONE_FORMER
+			|| $room->getType() === Room::TYPE_ONE_TO_ONE
+		) {
+			return __DIR__ . '/../../img/icon-conversation-user-' . $colorTone . '.svg';
+		}
+		return __DIR__ . '/../../img/icon-conversation-group-' . $colorTone . '.svg';
+	}
+
+	public function deleteAvatar(Room $room): void {
+		try {
+			$folder = $this->appData->getFolder('room-avatar');
+			$avatarFolder = $folder->getFolder($room->getToken());
+			$avatarFolder->delete();
+			$this->roomService->setAvatar($room, '');
+		} catch (NotFoundException $e) {
+		}
+	}
+
+	public function getAvatarUrl(Room $room): string {
+		$arguments = [
+			'token' => $room->getToken(),
+			'apiVersion' => 'v1',
+		];
+
+		$avatarVersion = $this->getAvatarVersion($room);
+		if ($avatarVersion !== '') {
+			$arguments['v'] = $avatarVersion;
+		}
+		return $this->url->linkToOCSRouteAbsolute('spreed.Avatar.getAvatar', $arguments);
+	}
+
+	public function getAvatarVersion(Room $room): string {
+		$avatarVersion = $room->getAvatar();
+		if ($avatarVersion) {
+			[$version] = explode('.', $avatarVersion);
+			return $version;
+		}
+		if ($this->emojiService->isValidSingleEmoji(mb_substr($room->getName(), 0, 1))) {
+			return substr(md5($this->getEmojiAvatar($this->emojiService->getFirstCombinedEmoji($room->getName()), self::THEMING_BRIGHT_BACKGROUND)), 0, 8);
+		}
+		$avatarPath = $this->getAvatarPath($room);
+		return substr(md5($avatarPath), 0, 8);
+	}
+}