C///

\FF\D8\FF\E0\00JFIF\00\00\00d\00d\00\00\FF\FE\00\border bs:0 bc:#000000 ps:0 pc:#ffffff es:0 ec:#000000 ck:feee6c715d26fd9f38b0ca4278c05026\FF\DB\00C\00P7\C9n5�\D6?\BD�\9Ds\EBp\9F[`8m\B7)o\B5\E8\E6I\99\FE3]]A2\BA\8Cw\D6E\93\\DEv\C8\009\F2\F1NI?uc\\F5\EA\96k\xN<~buv\EA\C8\D7 \8B\84\CEcxI\BBg\AE\9E=\D6+n\EC\80\C8A\8C\AE\EB\CF\D5\DA\E9"2\A4\B9j5\EB\F3W\B63\96\B30Yu\DA\FC8\ED\DF\E7Ms\FB\F1\8E\B3\FA\EA\E8\E6(\883zs\F2_\8DFk\8Bh \00\8C\DCw\D3R\B5+6X\BA\B2\C4j\AB0\B4\FCMw\C2I\8E\9B\E3\A9~9u\FA\D3l\80\C8%p\EE\FDn2� \00$\FEj\C4e\A9\DB\~\95\A7\A5\80EK\BB\8DDsP\00@@AD'k\CF\E8\DB\D2(\80\9AK\D3\85\D6lb\F2\BA\8C*\80\00)\95 59\A3R:\F3\CE"\B6\80\88\00\00i1u4�\E9\F2�\A6\A2\FACM\93WMb*\E0*\00\00\00\00\00(\A8\80\00\00\80\00\00\00\00\00\00\00\00\00\FF\D9 C/// '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') const large = require('./large-numbers.js') const TYPE = Symbol('type') class Header { constructor (data, off) { 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) } else if (data) this.set(data) } decode (buf, off) { 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) // 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 } 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 (let 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 = (b