112 lines
3.8 KiB
JavaScript
112 lines
3.8 KiB
JavaScript
const logger = require('winston');
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const db = require('../../../models');
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const chainquery = require('chainquery');
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const isApprovedChannel = require('../../../../utils/isApprovedChannel');
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const getClaimId = require('../../utils/getClaimId.js');
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const { handleErrorResponse } = require('../../utils/errorHandlers.js');
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const serveFile = require('./serveFile.js');
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const NO_CHANNEL = 'NO_CHANNEL';
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const NO_CLAIM = 'NO_CLAIM';
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const BLOCKED_CLAIM = 'BLOCKED_CLAIM';
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const NO_FILE = 'NO_FILE';
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const CONTENT_UNAVAILABLE = 'CONTENT_UNAVAILABLE';
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const { publishing: { serveOnlyApproved, approvedChannels } } = require('@config/siteConfig');
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const getClaimIdAndServeAsset = (channelName, channelClaimId, claimName, claimId, originalUrl, ip, res, headers) => {
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getClaimId(channelName, channelClaimId, claimName, claimId)
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.then(fullClaimId => {
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claimId = fullClaimId;
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return chainquery.claim.queries.resolveClaim(claimName, fullClaimId).catch(() => {});
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})
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.then(claim => {
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if (!claim) {
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logger.debug('Full claim id:', claimId);
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return db.Claim.findOne({
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where: {
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name: claimName,
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claimId,
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},
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});
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}
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return claim;
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})
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.then(claim => {
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let claimDataValues = claim.dataValues;
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if (serveOnlyApproved && !isApprovedChannel({ longId: claimDataValues.publisher_id || claimDataValues.certificateId }, approvedChannels)) {
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throw new Error(CONTENT_UNAVAILABLE);
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}
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let outpoint = claimDataValues.outpoint || `${claimDataValues.transaction_hash_id}:${claimDataValues.vout}`;
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logger.debug('Outpoint:', outpoint);
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return db.Blocked.isNotBlocked(outpoint).then(() => {
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// If content was found, is approved, and not blocked - log a view.
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if (headers && headers['user-agent'] && /LBRY/.test(headers['user-agent']) === false) {
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db.Views.create({
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time : Date.now(),
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isChannel : false,
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claimId : claimDataValues.claim_id || claimDataValues.claimId,
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publisherId: claimDataValues.publisher_id || claimDataValues.certificateId,
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ip,
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});
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}
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});
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})
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.then(() => {
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return db.File.findOne({
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where: {
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claimId,
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name: claimName,
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},
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});
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})
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.then(fileRecord => {
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if (!fileRecord) {
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throw NO_FILE;
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}
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serveFile(fileRecord.dataValues, res);
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})
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.catch(error => {
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if (error === NO_CLAIM) {
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logger.debug('no claim found');
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return res.status(404).json({
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success: false,
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message: 'No matching claim id could be found for that url',
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});
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}
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if (error === NO_CHANNEL) {
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logger.debug('no channel found');
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return res.status(404).json({
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success: false,
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message: 'No matching channel id could be found for that url',
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});
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}
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if (error === CONTENT_UNAVAILABLE) {
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logger.debug('unapproved channel');
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return res.status(400).json({
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success: false,
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message: 'This content is unavailable',
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});
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}
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if (error === BLOCKED_CLAIM) {
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logger.debug('claim was blocked');
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return res.status(451).json({
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success: false,
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message: 'In response to a complaint we received under the US Digital Millennium Copyright Act, we have blocked access to this content from our applications. For more details, see https://lbry.io/faq/dmca',
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});
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}
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if (error === NO_FILE) {
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logger.debug('no file available');
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return res.status(307).redirect(`/api/claim/get/${claimName}/${claimId}`);
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}
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handleErrorResponse(originalUrl, ip, error, res);
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});
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};
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module.exports = getClaimIdAndServeAsset;
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