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Editing: OCMProvider.php

<?php

declare(strict_types=1);

/**
 * SPDX-FileCopyrightText: 2023 Nextcloud GmbH and Nextcloud contributors
 * SPDX-License-Identifier: AGPL-3.0-or-later
 */

namespace OC\OCM\Model;

use OCP\OCM\Exceptions\OCMArgumentException;
use OCP\OCM\Exceptions\OCMProviderException;
use OCP\OCM\IOCMProvider;
use OCP\OCM\IOCMResource;
use OCP\Security\Signature\Model\Signatory;

/**
 * @since 28.0.0
 */
class OCMProvider implements IOCMProvider {
	private bool $enabled = false;
	private string $apiVersion = '';
	private string $inviteAcceptDialog = '';
	private array $capabilities = [];
	private string $endPoint = '';
	/** @var IOCMResource[] */
	private array $resourceTypes = [];
	private ?Signatory $signatory = null;

public function __construct(
		private readonly string $provider = '',
	) {
	}

/**
	 * @param bool $enabled
	 *
	 * @return $this
	 */
	public function setEnabled(bool $enabled): static {
		$this->enabled = $enabled;

return $this;
	}

/**
	 * @return bool
	 */
	public function isEnabled(): bool {
		return $this->enabled;
	}

/**
	 * @param string $apiVersion
	 *
	 * @return $this
	 */
	public function setApiVersion(string $apiVersion): static {
		$this->apiVersion = $apiVersion;

return $this;
	}

/**
	 * @return string
	 */
	public function getApiVersion(): string {
		return $this->apiVersion;
	}

/**
	 * returns the invite accept dialog
	 *
	 * @return string
	 * @since 32.0.0
	 */
	public function getInviteAcceptDialog(): string {
		return $this->inviteAcceptDialog;
	}

/**
	 * set the invite accept dialog
	 *
	 * @param string $inviteAcceptDialog
	 *
	 * @return $this
	 * @since 32.0.0
	 */
	public function setInviteAcceptDialog(string $inviteAcceptDialog): static {
		$this->inviteAcceptDialog = $inviteAcceptDialog;

return $this;
	}

/**
	 * @param string $endPoint
	 *
	 * @return $this
	 */
	public function setEndPoint(string $endPoint): static {
		$this->endPoint = $endPoint;

return $this;
	}

/**
	 * @return string
	 */
	public function getEndPoint(): string {
		return $this->endPoint;
	}

/**
	 * @return string
	 */
	public function getProvider(): string {
		return $this->provider;
	}

/**
	 * @param array $capabilities
	 *
	 * @return $this
	 */
	public function setCapabilities(array $capabilities): static {
		$this->capabilities = array_unique(array_merge(
			$this->capabilities,
			array_map([$this, 'normalizeCapability'], $capabilities)
		));
		return $this;
	}

/**
	 * @return array
	 */
	public function getCapabilities(): array {
		return $this->capabilities;
	}

/**
	 * @param string $capability
	 * @return bool
	 */
	public function hasCapability(string $capability): bool {
		return (in_array($this->normalizeCapability($capability), $this->capabilities, true));
	}

private function normalizeCapability(string $capability): string {
		// since ocm 1.2, removing leading slashes from capabilities
		return strtolower(ltrim($capability, '/'));
	}

/**
	 * create a new resource to later add it with {@see IOCMProvider::addResourceType()}
	 * @return IOCMResource
	 */
	public function createNewResourceType(): IOCMResource {
		return new OCMResource();
	}

/**
	 * @param IOCMResource $resource
	 *
	 * @return $this
	 */
	public function addResourceType(IOCMResource $resource): static {
		$this->resourceTypes[] = $resource;

return $this;
	}

/**
	 * @param IOCMResource[] $resourceTypes
	 *
	 * @return $this
	 */
	public function setResourceTypes(array $resourceTypes): static {
		$this->resourceTypes = $resourceTypes;

return $this;
	}

/**
	 * @return IOCMResource[]
	 */
	public function getResourceTypes(): array {
		return $this->resourceTypes;
	}

/**
	 * @param string $resourceName
	 * @param string $protocol
	 *
	 * @return string
	 * @throws OCMArgumentException
	 */
	public function extractProtocolEntry(string $resourceName, string $protocol): string {
		foreach ($this->getResourceTypes() as $resource) {
			if ($resource->getName() === $resourceName) {
				$entry = $resource->getProtocols()[$protocol] ?? null;
				if (is_null($entry)) {
					throw new OCMArgumentException('protocol not found');
				}

return (string)$entry;
			}
		}

throw new OCMArgumentException('resource not found');
	}

public function setSignatory(Signatory $signatory): void {
		$this->signatory = $signatory;
	}

public function getSignatory(): ?Signatory {
		return $this->signatory;
	}

/**
	 * import data from an array
	 *
	 * @param array $data
	 *
	 * @return OCMProvider&static
	 * @throws OCMProviderException in case a descent provider cannot be generated from data
	 */
	public function import(array $data): static {
		$this->setEnabled(is_bool($data['enabled'] ?? '') ? $data['enabled'] : false)
			// Fall back to old apiVersion for Nextcloud 30 compatibility
			->setApiVersion((string)($data['version'] ?? $data['apiVersion'] ?? ''))
			->setEndPoint($data['endPoint'] ?? '');

$resources = [];
		foreach (($data['resourceTypes'] ?? []) as $resourceData) {
			$resource = new OCMResource();
			$resources[] = $resource->import($resourceData);
		}
		$this->setResourceTypes($resources);
		$this->setInviteAcceptDialog($data['inviteAcceptDialog'] ?? '');
		$this->setCapabilities($data['capabilities'] ?? []);

if (isset($data['publicKey'])) {
			// import details about the remote request signing public key, if available
			$signatory = new Signatory();
			$signatory->setKeyId($data['publicKey']['keyId'] ?? '');
			$signatory->setPublicKey($data['publicKey']['publicKeyPem'] ?? '');
			if ($signatory->getKeyId() !== '' && $signatory->getPublicKey() !== '') {
				$this->setSignatory($signatory);
			}
		}

if (!$this->looksValid()) {
			throw new OCMProviderException('remote provider does not look valid');
		}

return $this;
	}

/**
	 * @return bool
	 */
	private function looksValid(): bool {
		return ($this->getApiVersion() !== '' && $this->getEndPoint() !== '');
	}

/**
	 * @since 28.0.0
	 */
	public function jsonSerialize(): array {
		$resourceTypes = [];
		foreach ($this->getResourceTypes() as $res) {
			$resourceTypes[] = $res->jsonSerialize();
		}

$response = [
			'enabled' => $this->isEnabled(),
			'apiVersion' => '1.0-proposal1', // deprecated, but keep it to stay compatible with old version
			'version' => $this->getApiVersion(), // informative but real version
			'endPoint' => $this->getEndPoint(),
			'publicKey' => $this->getSignatory()?->jsonSerialize(),
			'provider' => $this->getProvider(),
			'resourceTypes' => $resourceTypes
		];

$capabilities = $this->getCapabilities();
		if ($capabilities) {
			$response['capabilities'] = $capabilities;
		}
		$inviteAcceptDialog = $this->getInviteAcceptDialog();
		if ($inviteAcceptDialog !== '') {
			$response['inviteAcceptDialog'] = $inviteAcceptDialog;
		}
		return $response;

}
}

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