From 291803c31f829fe0d32bb3207bc11def95a7408c Mon Sep 17 00:00:00 2001 From: Nevena Bojovic Date: Tue, 1 Mar 2022 20:05:50 +0100 Subject: Urađena test aplikacija. Povezan front i back. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- .../Front/node_modules/tar/lib/header.js | 288 +++++++++++++++++++++ 1 file changed, 288 insertions(+) create mode 100644 sandbox/testAppNevena/Front/node_modules/tar/lib/header.js (limited to 'sandbox/testAppNevena/Front/node_modules/tar/lib/header.js') diff --git a/sandbox/testAppNevena/Front/node_modules/tar/lib/header.js b/sandbox/testAppNevena/Front/node_modules/tar/lib/header.js new file mode 100644 index 00000000..12950404 --- /dev/null +++ b/sandbox/testAppNevena/Front/node_modules/tar/lib/header.js @@ -0,0 +1,288 @@ +'use strict' +// parse a 512-byte header block to a data object, or vice-versa +// encode returns `true` if a pax extended header is needed, because +// the data could not be faithfully encoded in a simple header. +// (Also, check header.needPax to see if it needs a pax header.) + +const types = require('./types.js') +const pathModule = require('path').posix +const large = require('./large-numbers.js') + +const SLURP = Symbol('slurp') +const TYPE = Symbol('type') + +class Header { + constructor (data, off, ex, gex) { + this.cksumValid = false + this.needPax = false + this.nullBlock = false + + this.block = null + this.path = null + this.mode = null + this.uid = null + this.gid = null + this.size = null + this.mtime = null + this.cksum = null + this[TYPE] = '0' + this.linkpath = null + this.uname = null + this.gname = null + this.devmaj = 0 + this.devmin = 0 + this.atime = null + this.ctime = null + + if (Buffer.isBuffer(data)) + this.decode(data, off || 0, ex, gex) + else if (data) + this.set(data) + } + + decode (buf, off, ex, gex) { + if (!off) + off = 0 + + if (!buf || !(buf.length >= off + 512)) + throw new Error('need 512 bytes for header') + + this.path = decString(buf, off, 100) + this.mode = decNumber(buf, off + 100, 8) + this.uid = decNumber(buf, off + 108, 8) + this.gid = decNumber(buf, off + 116, 8) + this.size = decNumber(buf, off + 124, 12) + this.mtime = decDate(buf, off + 136, 12) + this.cksum = decNumber(buf, off + 148, 12) + + // if we have extended or global extended headers, apply them now + // See https://github.com/npm/node-tar/pull/187 + this[SLURP](ex) + this[SLURP](gex, true) + + // old tar versions marked dirs as a file with a trailing / + this[TYPE] = decString(buf, off + 156, 1) + if (this[TYPE] === '') + this[TYPE] = '0' + if (this[TYPE] === '0' && this.path.substr(-1) === '/') + this[TYPE] = '5' + + // tar implementations sometimes incorrectly put the stat(dir).size + // as the size in the tarball, even though Directory entries are + // not able to have any body at all. In the very rare chance that + // it actually DOES have a body, we weren't going to do anything with + // it anyway, and it'll just be a warning about an invalid header. + if (this[TYPE] === '5') + this.size = 0 + + this.linkpath = decString(buf, off + 157, 100) + if (buf.slice(off + 257, off + 265).toString() === 'ustar\u000000') { + this.uname = decString(buf, off + 265, 32) + this.gname = decString(buf, off + 297, 32) + this.devmaj = decNumber(buf, off + 329, 8) + this.devmin = decNumber(buf, off + 337, 8) + if (buf[off + 475] !== 0) { + // definitely a prefix, definitely >130 chars. + const prefix = decString(buf, off + 345, 155) + this.path = prefix + '/' + this.path + } else { + const prefix = decString(buf, off + 345, 130) + if (prefix) + this.path = prefix + '/' + this.path + this.atime = decDate(buf, off + 476, 12) + this.ctime = decDate(buf, off + 488, 12) + } + } + + let sum = 8 * 0x20 + for (let i = off; i < off + 148; i++) + sum += buf[i] + + for (let i = off + 156; i < off + 512; i++) + sum += buf[i] + + this.cksumValid = sum === this.cksum + if (this.cksum === null && sum === 8 * 0x20) + this.nullBlock = true + } + + [SLURP] (ex, global) { + for (const k in ex) { + // we slurp in everything except for the path attribute in + // a global extended header, because that's weird. + if (ex[k] !== null && ex[k] !== undefined && + !(global && k === 'path')) + this[k] = ex[k] + } + } + + encode (buf, off) { + if (!buf) { + buf = this.block = Buffer.alloc(512) + off = 0 + } + + if (!off) + off = 0 + + if (!(buf.length >= off + 512)) + throw new Error('need 512 bytes for header') + + const prefixSize = this.ctime || this.atime ? 130 : 155 + const split = splitPrefix(this.path || '', prefixSize) + const path = split[0] + const prefix = split[1] + this.needPax = split[2] + + this.needPax = encString(buf, off, 100, path) || this.needPax + this.needPax = encNumber(buf, off + 100, 8, this.mode) || this.needPax + this.needPax = encNumber(buf, off + 108, 8, this.uid) || this.needPax + this.needPax = encNumber(buf, off + 116, 8, this.gid) || this.needPax + this.needPax = encNumber(buf, off + 124, 12, this.size) || this.needPax + this.needPax = encDate(buf, off + 136, 12, this.mtime) || this.needPax + buf[off + 156] = this[TYPE].charCodeAt(0) + this.needPax = encString(buf, off + 157, 100, this.linkpath) || this.needPax + buf.write('ustar\u000000', off + 257, 8) + this.needPax = encString(buf, off + 265, 32, this.uname) || this.needPax + this.needPax = encString(buf, off + 297, 32, this.gname) || this.needPax + this.needPax = encNumber(buf, off + 329, 8, this.devmaj) || this.needPax + this.needPax = encNumber(buf, off + 337, 8, this.devmin) || this.needPax + this.needPax = encString(buf, off + 345, prefixSize, prefix) || this.needPax + if (buf[off + 475] !== 0) + this.needPax = encString(buf, off + 345, 155, prefix) || this.needPax + else { + this.needPax = encString(buf, off + 345, 130, prefix) || this.needPax + this.needPax = encDate(buf, off + 476, 12, this.atime) || this.needPax + this.needPax = encDate(buf, off + 488, 12, this.ctime) || this.needPax + } + + let sum = 8 * 0x20 + for (let i = off; i < off + 148; i++) + sum += buf[i] + + for (let i = off + 156; i < off + 512; i++) + sum += buf[i] + + this.cksum = sum + encNumber(buf, off + 148, 8, this.cksum) + this.cksumValid = true + + return this.needPax + } + + set (data) { + for (const i in data) { + if (data[i] !== null && data[i] !== undefined) + this[i] = data[i] + } + } + + get type () { + return types.name.get(this[TYPE]) || this[TYPE] + } + + get typeKey () { + return this[TYPE] + } + + set type (type) { + if (types.code.has(type)) + this[TYPE] = types.code.get(type) + else + this[TYPE] = type + } +} + +const splitPrefix = (p, prefixSize) => { + const pathSize = 100 + let pp = p + let prefix = '' + let ret + const root = pathModule.parse(p).root || '.' + + if (Buffer.byteLength(pp) < pathSize) + ret = [pp, prefix, false] + else { + // first set prefix to the dir, and path to the base + prefix = pathModule.dirname(pp) + pp = pathModule.basename(pp) + + do { + // both fit! + if (Buffer.byteLength(pp) <= pathSize && + Buffer.byteLength(prefix) <= prefixSize) + ret = [pp, prefix, false] + + // prefix fits in prefix, but path doesn't fit in path + else if (Buffer.byteLength(pp) > pathSize && + Buffer.byteLength(prefix) <= prefixSize) + ret = [pp.substr(0, pathSize - 1), prefix, true] + + else { + // make path take a bit from prefix + pp = pathModule.join(pathModule.basename(prefix), pp) + prefix = pathModule.dirname(prefix) + } + } while (prefix !== root && !ret) + + // at this point, found no resolution, just truncate + if (!ret) + ret = [p.substr(0, pathSize - 1), '', true] + } + return ret +} + +const decString = (buf, off, size) => + buf.slice(off, off + size).toString('utf8').replace(/\0.*/, '') + +const decDate = (buf, off, size) => + numToDate(decNumber(buf, off, size)) + +const numToDate = num => num === null ? null : new Date(num * 1000) + +const decNumber = (buf, off, size) => + buf[off] & 0x80 ? large.parse(buf.slice(off, off + size)) + : decSmallNumber(buf, off, size) + +const nanNull = value => isNaN(value) ? null : value + +const decSmallNumber = (buf, off, size) => + nanNull(parseInt( + buf.slice(off, off + size) + .toString('utf8').replace(/\0.*$/, '').trim(), 8)) + +// the maximum encodable as a null-terminated octal, by field size +const MAXNUM = { + 12: 0o77777777777, + 8: 0o7777777, +} + +const encNumber = (buf, off, size, number) => + number === null ? false : + number > MAXNUM[size] || number < 0 + ? (large.encode(number, buf.slice(off, off + size)), true) + : (encSmallNumber(buf, off, size, number), false) + +const encSmallNumber = (buf, off, size, number) => + buf.write(octalString(number, size), off, size, 'ascii') + +const octalString = (number, size) => + padOctal(Math.floor(number).toString(8), size) + +const padOctal = (string, size) => + (string.length === size - 1 ? string + : new Array(size - string.length - 1).join('0') + string + ' ') + '\0' + +const encDate = (buf, off, size, date) => + date === null ? false : + encNumber(buf, off, size, date.getTime() / 1000) + +// enough to fill the longest string we've got +const NULLS = new Array(156).join('\0') +// pad with nulls, return true if it's longer or non-ascii +const encString = (buf, off, size, string) => + string === null ? false : + (buf.write(string + NULLS, off, size, 'utf8'), + string.length !== Buffer.byteLength(string) || string.length > size) + +module.exports = Header -- cgit v1.2.3