diff options
Diffstat (limited to 'node_modules/@fastify/busboy/deps/dicer/lib')
4 files changed, 484 insertions, 0 deletions
diff --git a/node_modules/@fastify/busboy/deps/dicer/lib/Dicer.js b/node_modules/@fastify/busboy/deps/dicer/lib/Dicer.js new file mode 100644 index 0000000..79da160 --- /dev/null +++ b/node_modules/@fastify/busboy/deps/dicer/lib/Dicer.js @@ -0,0 +1,207 @@ +'use strict' + +const WritableStream = require('node:stream').Writable +const inherits = require('node:util').inherits + +const StreamSearch = require('../../streamsearch/sbmh') + +const PartStream = require('./PartStream') +const HeaderParser = require('./HeaderParser') + +const DASH = 45 +const B_ONEDASH = Buffer.from('-') +const B_CRLF = Buffer.from('\r\n') +const EMPTY_FN = function () {} + +function Dicer (cfg) { + if (!(this instanceof Dicer)) { return new Dicer(cfg) } + WritableStream.call(this, cfg) + + if (!cfg || (!cfg.headerFirst && typeof cfg.boundary !== 'string')) { throw new TypeError('Boundary required') } + + if (typeof cfg.boundary === 'string') { this.setBoundary(cfg.boundary) } else { this._bparser = undefined } + + this._headerFirst = cfg.headerFirst + + this._dashes = 0 + this._parts = 0 + this._finished = false + this._realFinish = false + this._isPreamble = true + this._justMatched = false + this._firstWrite = true + this._inHeader = true + this._part = undefined + this._cb = undefined + this._ignoreData = false + this._partOpts = { highWaterMark: cfg.partHwm } + this._pause = false + + const self = this + this._hparser = new HeaderParser(cfg) + this._hparser.on('header', function (header) { + self._inHeader = false + self._part.emit('header', header) + }) +} +inherits(Dicer, WritableStream) + +Dicer.prototype.emit = function (ev) { + if (ev === 'finish' && !this._realFinish) { + if (!this._finished) { + const self = this + process.nextTick(function () { + self.emit('error', new Error('Unexpected end of multipart data')) + if (self._part && !self._ignoreData) { + const type = (self._isPreamble ? 'Preamble' : 'Part') + self._part.emit('error', new Error(type + ' terminated early due to unexpected end of multipart data')) + self._part.push(null) + process.nextTick(function () { + self._realFinish = true + self.emit('finish') + self._realFinish = false + }) + return + } + self._realFinish = true + self.emit('finish') + self._realFinish = false + }) + } + } else { WritableStream.prototype.emit.apply(this, arguments) } +} + +Dicer.prototype._write = function (data, encoding, cb) { + // ignore unexpected data (e.g. extra trailer data after finished) + if (!this._hparser && !this._bparser) { return cb() } + + if (this._headerFirst && this._isPreamble) { + if (!this._part) { + this._part = new PartStream(this._partOpts) + if (this._events.preamble) { this.emit('preamble', this._part) } else { this._ignore() } + } + const r = this._hparser.push(data) + if (!this._inHeader && r !== undefined && r < data.length) { data = data.slice(r) } else { return cb() } + } + + // allows for "easier" testing + if (this._firstWrite) { + this._bparser.push(B_CRLF) + this._firstWrite = false + } + + this._bparser.push(data) + + if (this._pause) { this._cb = cb } else { cb() } +} + +Dicer.prototype.reset = function () { + this._part = undefined + this._bparser = undefined + this._hparser = undefined +} + +Dicer.prototype.setBoundary = function (boundary) { + const self = this + this._bparser = new StreamSearch('\r\n--' + boundary) + this._bparser.on('info', function (isMatch, data, start, end) { + self._oninfo(isMatch, data, start, end) + }) +} + +Dicer.prototype._ignore = function () { + if (this._part && !this._ignoreData) { + this._ignoreData = true + this._part.on('error', EMPTY_FN) + // we must perform some kind of read on the stream even though we are + // ignoring the data, otherwise node's Readable stream will not emit 'end' + // after pushing null to the stream + this._part.resume() + } +} + +Dicer.prototype._oninfo = function (isMatch, data, start, end) { + let buf; const self = this; let i = 0; let r; let shouldWriteMore = true + + if (!this._part && this._justMatched && data) { + while (this._dashes < 2 && (start + i) < end) { + if (data[start + i] === DASH) { + ++i + ++this._dashes + } else { + if (this._dashes) { buf = B_ONEDASH } + this._dashes = 0 + break + } + } + if (this._dashes === 2) { + if ((start + i) < end && this._events.trailer) { this.emit('trailer', data.slice(start + i, end)) } + this.reset() + this._finished = true + // no more parts will be added + if (self._parts === 0) { + self._realFinish = true + self.emit('finish') + self._realFinish = false + } + } + if (this._dashes) { return } + } + if (this._justMatched) { this._justMatched = false } + if (!this._part) { + this._part = new PartStream(this._partOpts) + this._part._read = function (n) { + self._unpause() + } + if (this._isPreamble && this._events.preamble) { this.emit('preamble', this._part) } else if (this._isPreamble !== true && this._events.part) { this.emit('part', this._part) } else { this._ignore() } + if (!this._isPreamble) { this._inHeader = true } + } + if (data && start < end && !this._ignoreData) { + if (this._isPreamble || !this._inHeader) { + if (buf) { shouldWriteMore = this._part.push(buf) } + shouldWriteMore = this._part.push(data.slice(start, end)) + if (!shouldWriteMore) { this._pause = true } + } else if (!this._isPreamble && this._inHeader) { + if (buf) { this._hparser.push(buf) } + r = this._hparser.push(data.slice(start, end)) + if (!this._inHeader && r !== undefined && r < end) { this._oninfo(false, data, start + r, end) } + } + } + if (isMatch) { + this._hparser.reset() + if (this._isPreamble) { this._isPreamble = false } else { + if (start !== end) { + ++this._parts + this._part.on('end', function () { + if (--self._parts === 0) { + if (self._finished) { + self._realFinish = true + self.emit('finish') + self._realFinish = false + } else { + self._unpause() + } + } + }) + } + } + this._part.push(null) + this._part = undefined + this._ignoreData = false + this._justMatched = true + this._dashes = 0 + } +} + +Dicer.prototype._unpause = function () { + if (!this._pause) { return } + + this._pause = false + if (this._cb) { + const cb = this._cb + this._cb = undefined + cb() + } +} + +module.exports = Dicer diff --git a/node_modules/@fastify/busboy/deps/dicer/lib/HeaderParser.js b/node_modules/@fastify/busboy/deps/dicer/lib/HeaderParser.js new file mode 100644 index 0000000..65f667b --- /dev/null +++ b/node_modules/@fastify/busboy/deps/dicer/lib/HeaderParser.js @@ -0,0 +1,100 @@ +'use strict' + +const EventEmitter = require('node:events').EventEmitter +const inherits = require('node:util').inherits +const getLimit = require('../../../lib/utils/getLimit') + +const StreamSearch = require('../../streamsearch/sbmh') + +const B_DCRLF = Buffer.from('\r\n\r\n') +const RE_CRLF = /\r\n/g +const RE_HDR = /^([^:]+):[ \t]?([\x00-\xFF]+)?$/ // eslint-disable-line no-control-regex + +function HeaderParser (cfg) { + EventEmitter.call(this) + + cfg = cfg || {} + const self = this + this.nread = 0 + this.maxed = false + this.npairs = 0 + this.maxHeaderPairs = getLimit(cfg, 'maxHeaderPairs', 2000) + this.maxHeaderSize = getLimit(cfg, 'maxHeaderSize', 80 * 1024) + this.buffer = '' + this.header = {} + this.finished = false + this.ss = new StreamSearch(B_DCRLF) + this.ss.on('info', function (isMatch, data, start, end) { + if (data && !self.maxed) { + if (self.nread + end - start >= self.maxHeaderSize) { + end = self.maxHeaderSize - self.nread + start + self.nread = self.maxHeaderSize + self.maxed = true + } else { self.nread += (end - start) } + + self.buffer += data.toString('binary', start, end) + } + if (isMatch) { self._finish() } + }) +} +inherits(HeaderParser, EventEmitter) + +HeaderParser.prototype.push = function (data) { + const r = this.ss.push(data) + if (this.finished) { return r } +} + +HeaderParser.prototype.reset = function () { + this.finished = false + this.buffer = '' + this.header = {} + this.ss.reset() +} + +HeaderParser.prototype._finish = function () { + if (this.buffer) { this._parseHeader() } + this.ss.matches = this.ss.maxMatches + const header = this.header + this.header = {} + this.buffer = '' + this.finished = true + this.nread = this.npairs = 0 + this.maxed = false + this.emit('header', header) +} + +HeaderParser.prototype._parseHeader = function () { + if (this.npairs === this.maxHeaderPairs) { return } + + const lines = this.buffer.split(RE_CRLF) + const len = lines.length + let m, h + + for (var i = 0; i < len; ++i) { // eslint-disable-line no-var + if (lines[i].length === 0) { continue } + if (lines[i][0] === '\t' || lines[i][0] === ' ') { + // folded header content + // RFC2822 says to just remove the CRLF and not the whitespace following + // it, so we follow the RFC and include the leading whitespace ... + if (h) { + this.header[h][this.header[h].length - 1] += lines[i] + continue + } + } + + const posColon = lines[i].indexOf(':') + if ( + posColon === -1 || + posColon === 0 + ) { + return + } + m = RE_HDR.exec(lines[i]) + h = m[1].toLowerCase() + this.header[h] = this.header[h] || [] + this.header[h].push((m[2] || '')) + if (++this.npairs === this.maxHeaderPairs) { break } + } +} + +module.exports = HeaderParser diff --git a/node_modules/@fastify/busboy/deps/dicer/lib/PartStream.js b/node_modules/@fastify/busboy/deps/dicer/lib/PartStream.js new file mode 100644 index 0000000..c91da1c --- /dev/null +++ b/node_modules/@fastify/busboy/deps/dicer/lib/PartStream.js @@ -0,0 +1,13 @@ +'use strict' + +const inherits = require('node:util').inherits +const ReadableStream = require('node:stream').Readable + +function PartStream (opts) { + ReadableStream.call(this, opts) +} +inherits(PartStream, ReadableStream) + +PartStream.prototype._read = function (n) {} + +module.exports = PartStream diff --git a/node_modules/@fastify/busboy/deps/dicer/lib/dicer.d.ts b/node_modules/@fastify/busboy/deps/dicer/lib/dicer.d.ts new file mode 100644 index 0000000..3c5b896 --- /dev/null +++ b/node_modules/@fastify/busboy/deps/dicer/lib/dicer.d.ts @@ -0,0 +1,164 @@ +// Type definitions for dicer 0.2 +// Project: https://github.com/mscdex/dicer +// Definitions by: BendingBender <https://github.com/BendingBender> +// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped +// TypeScript Version: 2.2 +/// <reference types="node" /> + +import stream = require("stream"); + +// tslint:disable:unified-signatures + +/** + * A very fast streaming multipart parser for node.js. + * Dicer is a WritableStream + * + * Dicer (special) events: + * - on('finish', ()) - Emitted when all parts have been parsed and the Dicer instance has been ended. + * - on('part', (stream: PartStream)) - Emitted when a new part has been found. + * - on('preamble', (stream: PartStream)) - Emitted for preamble if you should happen to need it (can usually be ignored). + * - on('trailer', (data: Buffer)) - Emitted when trailing data was found after the terminating boundary (as with the preamble, this can usually be ignored too). + */ +export class Dicer extends stream.Writable { + /** + * Creates and returns a new Dicer instance with the following valid config settings: + * + * @param config The configuration to use + */ + constructor(config: Dicer.Config); + /** + * Sets the boundary to use for parsing and performs some initialization needed for parsing. + * You should only need to use this if you set headerFirst to true in the constructor and are parsing the boundary from the preamble header. + * + * @param boundary The boundary to use + */ + setBoundary(boundary: string): void; + addListener(event: "finish", listener: () => void): this; + addListener(event: "part", listener: (stream: Dicer.PartStream) => void): this; + addListener(event: "preamble", listener: (stream: Dicer.PartStream) => void): this; + addListener(event: "trailer", listener: (data: Buffer) => void): this; + addListener(event: "close", listener: () => void): this; + addListener(event: "drain", listener: () => void): this; + addListener(event: "error", listener: (err: Error) => void): this; + addListener(event: "pipe", listener: (src: stream.Readable) => void): this; + addListener(event: "unpipe", listener: (src: stream.Readable) => void): this; + addListener(event: string, listener: (...args: any[]) => void): this; + on(event: "finish", listener: () => void): this; + on(event: "part", listener: (stream: Dicer.PartStream) => void): this; + on(event: "preamble", listener: (stream: Dicer.PartStream) => void): this; + on(event: "trailer", listener: (data: Buffer) => void): this; + on(event: "close", listener: () => void): this; + on(event: "drain", listener: () => void): this; + on(event: "error", listener: (err: Error) => void): this; + on(event: "pipe", listener: (src: stream.Readable) => void): this; + on(event: "unpipe", listener: (src: stream.Readable) => void): this; + on(event: string, listener: (...args: any[]) => void): this; + once(event: "finish", listener: () => void): this; + once(event: "part", listener: (stream: Dicer.PartStream) => void): this; + once(event: "preamble", listener: (stream: Dicer.PartStream) => void): this; + once(event: "trailer", listener: (data: Buffer) => void): this; + once(event: "close", listener: () => void): this; + once(event: "drain", listener: () => void): this; + once(event: "error", listener: (err: Error) => void): this; + once(event: "pipe", listener: (src: stream.Readable) => void): this; + once(event: "unpipe", listener: (src: stream.Readable) => void): this; + once(event: string, listener: (...args: any[]) => void): this; + prependListener(event: "finish", listener: () => void): this; + prependListener(event: "part", listener: (stream: Dicer.PartStream) => void): this; + prependListener(event: "preamble", listener: (stream: Dicer.PartStream) => void): this; + prependListener(event: "trailer", listener: (data: Buffer) => void): this; + prependListener(event: "close", listener: () => void): this; + prependListener(event: "drain", listener: () => void): this; + prependListener(event: "error", listener: (err: Error) => void): this; + prependListener(event: "pipe", listener: (src: stream.Readable) => void): this; + prependListener(event: "unpipe", listener: (src: stream.Readable) => void): this; + prependListener(event: string, listener: (...args: any[]) => void): this; + prependOnceListener(event: "finish", listener: () => void): this; + prependOnceListener(event: "part", listener: (stream: Dicer.PartStream) => void): this; + prependOnceListener(event: "preamble", listener: (stream: Dicer.PartStream) => void): this; + prependOnceListener(event: "trailer", listener: (data: Buffer) => void): this; + prependOnceListener(event: "close", listener: () => void): this; + prependOnceListener(event: "drain", listener: () => void): this; + prependOnceListener(event: "error", listener: (err: Error) => void): this; + prependOnceListener(event: "pipe", listener: (src: stream.Readable) => void): this; + prependOnceListener(event: "unpipe", listener: (src: stream.Readable) => void): this; + prependOnceListener(event: string, listener: (...args: any[]) => void): this; + removeListener(event: "finish", listener: () => void): this; + removeListener(event: "part", listener: (stream: Dicer.PartStream) => void): this; + removeListener(event: "preamble", listener: (stream: Dicer.PartStream) => void): this; + removeListener(event: "trailer", listener: (data: Buffer) => void): this; + removeListener(event: "close", listener: () => void): this; + removeListener(event: "drain", listener: () => void): this; + removeListener(event: "error", listener: (err: Error) => void): this; + removeListener(event: "pipe", listener: (src: stream.Readable) => void): this; + removeListener(event: "unpipe", listener: (src: stream.Readable) => void): this; + removeListener(event: string, listener: (...args: any[]) => void): this; +} + +declare namespace Dicer { + interface Config { + /** + * This is the boundary used to detect the beginning of a new part. + */ + boundary?: string | undefined; + /** + * If true, preamble header parsing will be performed first. + */ + headerFirst?: boolean | undefined; + /** + * The maximum number of header key=>value pairs to parse Default: 2000 (same as node's http). + */ + maxHeaderPairs?: number | undefined; + } + + /** + * PartStream is a _ReadableStream_ + * + * PartStream (special) events: + * - on('header', (header: object)) - An object containing the header for this particular part. Each property value is an array of one or more string values. + */ + interface PartStream extends stream.Readable { + addListener(event: "header", listener: (header: object) => void): this; + addListener(event: "close", listener: () => void): this; + addListener(event: "data", listener: (chunk: Buffer | string) => void): this; + addListener(event: "end", listener: () => void): this; + addListener(event: "readable", listener: () => void): this; + addListener(event: "error", listener: (err: Error) => void): this; + addListener(event: string, listener: (...args: any[]) => void): this; + on(event: "header", listener: (header: object) => void): this; + on(event: "close", listener: () => void): this; + on(event: "data", listener: (chunk: Buffer | string) => void): this; + on(event: "end", listener: () => void): this; + on(event: "readable", listener: () => void): this; + on(event: "error", listener: (err: Error) => void): this; + on(event: string, listener: (...args: any[]) => void): this; + once(event: "header", listener: (header: object) => void): this; + once(event: "close", listener: () => void): this; + once(event: "data", listener: (chunk: Buffer | string) => void): this; + once(event: "end", listener: () => void): this; + once(event: "readable", listener: () => void): this; + once(event: "error", listener: (err: Error) => void): this; + once(event: string, listener: (...args: any[]) => void): this; + prependListener(event: "header", listener: (header: object) => void): this; + prependListener(event: "close", listener: () => void): this; + prependListener(event: "data", listener: (chunk: Buffer | string) => void): this; + prependListener(event: "end", listener: () => void): this; + prependListener(event: "readable", listener: () => void): this; + prependListener(event: "error", listener: (err: Error) => void): this; + prependListener(event: string, listener: (...args: any[]) => void): this; + prependOnceListener(event: "header", listener: (header: object) => void): this; + prependOnceListener(event: "close", listener: () => void): this; + prependOnceListener(event: "data", listener: (chunk: Buffer | string) => void): this; + prependOnceListener(event: "end", listener: () => void): this; + prependOnceListener(event: "readable", listener: () => void): this; + prependOnceListener(event: "error", listener: (err: Error) => void): this; + prependOnceListener(event: string, listener: (...args: any[]) => void): this; + removeListener(event: "header", listener: (header: object) => void): this; + removeListener(event: "close", listener: () => void): this; + removeListener(event: "data", listener: (chunk: Buffer | string) => void): this; + removeListener(event: "end", listener: () => void): this; + removeListener(event: "readable", listener: () => void): this; + removeListener(event: "error", listener: (err: Error) => void): this; + removeListener(event: string, listener: (...args: any[]) => void): this; + } +}
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