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93 lines
2.6 KiB
JavaScript
93 lines
2.6 KiB
JavaScript
4 years ago
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/*jshint esversion: 6 */
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const Block = module.exports;
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const Util = require("../common-util");
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const Path = require("path");
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const Fs = require("fs");
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const Fse = require("fs-extra");
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const nThen = require("nthen");
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Block.mkPath = function (Env, publicKey) {
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// prepare publicKey to be used as a file name
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var safeKey = Util.escapeKeyCharacters(publicKey);
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// validate safeKey
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if (typeof(safeKey) !== 'string') { return; }
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// derive the full path
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// /home/cryptpad/cryptpad/block/fg/fg32kefksjdgjkewrjksdfksjdfsdfskdjfsfd
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return Path.join(Env.paths.block, safeKey.slice(0, 2), safeKey);
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};
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Block.mkArchivePath = function (Env, publicKey) {
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// prepare publicKey to be used as a file name
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var safeKey = Util.escapeKeyCharacters(publicKey);
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// validate safeKey
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if (typeof(safeKey) !== 'string') {
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return;
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}
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// derive the full path
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// /home/cryptpad/cryptpad/block/fg/fg32kefksjdgjkewrjksdfksjdfsdfskdjfsfd
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return Path.join(Env.paths.archive, 'block', safeKey.slice(0, 2), safeKey);
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};
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Block.archive = function (Env, publicKey, _cb) {
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var cb = Util.once(Util.mkAsync(_cb));
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// derive the filepath
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var currentPath = Block.mkPath(Env, publicKey);
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// make sure the path is valid
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if (typeof(currentPath) !== 'string') {
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return void cb('E_INVALID_BLOCK_PATH');
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}
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var archivePath = Block.mkArchivePath(Env, publicKey);
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// make sure the path is valid
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if (typeof(archivePath) !== 'string') {
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return void cb('E_INVALID_BLOCK_ARCHIVAL_PATH');
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}
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Fse.move(currentPath, archivePath, {
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overwrite: true,
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}, cb);
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};
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Block.check = function (Env, publicKey, _cb) { // 'check' because 'exists' implies boolean
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var cb = Util.once(Util.mkAsync(_cb));
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var path = Block.mkPath(Env, publicKey);
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Fs.access(path, Fs.constants.F_OK, cb);
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};
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Block.write = function (Env, publicKey, buffer, _cb) {
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var cb = Util.once(Util.mkAsync(_cb));
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var path = Block.mkPath(Env, publicKey);
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if (typeof(path) !== 'string') { return void cb('INVALID_PATH'); }
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var parsed = Path.parse(path);
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nThen(function (w) {
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Fse.mkdirp(parsed.dir, w(function (err) {
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if (!err) { return; }
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w.abort();
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cb(err);
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}));
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}).nThen(function () {
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// XXX BLOCK check whether this overwrites a block
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// XXX archive the old one if so
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Fs.writeFile(path, buffer, { encoding: 'binary' }, cb);
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});
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};
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/*
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Block.create = function (opt, _cb) {
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var cb = Util.once(Util.mkAsync(_cb));
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var env = {
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root: opt.root || '', // XXX
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};
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};
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*/
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