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Diffstat (limited to 'middleware/node_modules/safe-buffer')
| -rw-r--r-- | middleware/node_modules/safe-buffer/LICENSE | 21 | ||||
| -rw-r--r-- | middleware/node_modules/safe-buffer/README.md | 584 | ||||
| -rw-r--r-- | middleware/node_modules/safe-buffer/index.d.ts | 187 | ||||
| -rw-r--r-- | middleware/node_modules/safe-buffer/index.js | 65 | ||||
| -rw-r--r-- | middleware/node_modules/safe-buffer/package.json | 51 |
5 files changed, 908 insertions, 0 deletions
diff --git a/middleware/node_modules/safe-buffer/LICENSE b/middleware/node_modules/safe-buffer/LICENSE new file mode 100644 index 0000000..0c068ce --- /dev/null +++ b/middleware/node_modules/safe-buffer/LICENSE @@ -0,0 +1,21 @@ +The MIT License (MIT) + +Copyright (c) Feross Aboukhadijeh + +Permission is hereby granted, free of charge, to any person obtaining a copy +of this software and associated documentation files (the "Software"), to deal +in the Software without restriction, including without limitation the rights +to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +copies of the Software, and to permit persons to whom the Software is +furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in +all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN +THE SOFTWARE. diff --git a/middleware/node_modules/safe-buffer/README.md b/middleware/node_modules/safe-buffer/README.md new file mode 100644 index 0000000..e9a81af --- /dev/null +++ b/middleware/node_modules/safe-buffer/README.md @@ -0,0 +1,584 @@ +# safe-buffer [![travis][travis-image]][travis-url] [![npm][npm-image]][npm-url] [![downloads][downloads-image]][downloads-url] [![javascript style guide][standard-image]][standard-url] + +[travis-image]: https://img.shields.io/travis/feross/safe-buffer/master.svg +[travis-url]: https://travis-ci.org/feross/safe-buffer +[npm-image]: https://img.shields.io/npm/v/safe-buffer.svg +[npm-url]: https://npmjs.org/package/safe-buffer +[downloads-image]: https://img.shields.io/npm/dm/safe-buffer.svg +[downloads-url]: https://npmjs.org/package/safe-buffer +[standard-image]: https://img.shields.io/badge/code_style-standard-brightgreen.svg +[standard-url]: https://standardjs.com + +#### Safer Node.js Buffer API + +**Use the new Node.js Buffer APIs (`Buffer.from`, `Buffer.alloc`, +`Buffer.allocUnsafe`, `Buffer.allocUnsafeSlow`) in all versions of Node.js.** + +**Uses the built-in implementation when available.** + +## install + +``` +npm install safe-buffer +``` + +## usage + +The goal of this package is to provide a safe replacement for the node.js `Buffer`. + +It's a drop-in replacement for `Buffer`. You can use it by adding one `require` line to +the top of your node.js modules: + +```js +var Buffer = require('safe-buffer').Buffer + +// Existing buffer code will continue to work without issues: + +new Buffer('hey', 'utf8') +new Buffer([1, 2, 3], 'utf8') +new Buffer(obj) +new Buffer(16) // create an uninitialized buffer (potentially unsafe) + +// But you can use these new explicit APIs to make clear what you want: + +Buffer.from('hey', 'utf8') // convert from many types to a Buffer +Buffer.alloc(16) // create a zero-filled buffer (safe) +Buffer.allocUnsafe(16) // create an uninitialized buffer (potentially unsafe) +``` + +## api + +### Class Method: Buffer.from(array) +<!-- YAML +added: v3.0.0 +--> + +* `array` {Array} + +Allocates a new `Buffer` using an `array` of octets. + +```js +const buf = Buffer.from([0x62,0x75,0x66,0x66,0x65,0x72]); + // creates a new Buffer containing ASCII bytes + // ['b','u','f','f','e','r'] +``` + +A `TypeError` will be thrown if `array` is not an `Array`. + +### Class Method: Buffer.from(arrayBuffer[, byteOffset[, length]]) +<!-- YAML +added: v5.10.0 +--> + +* `arrayBuffer` {ArrayBuffer} The `.buffer` property of a `TypedArray` or + a `new ArrayBuffer()` +* `byteOffset` {Number} Default: `0` +* `length` {Number} Default: `arrayBuffer.length - byteOffset` + +When passed a reference to the `.buffer` property of a `TypedArray` instance, +the newly created `Buffer` will share the same allocated memory as the +TypedArray. + +```js +const arr = new Uint16Array(2); +arr[0] = 5000; +arr[1] = 4000; + +const buf = Buffer.from(arr.buffer); // shares the memory with arr; + +console.log(buf); + // Prints: <Buffer 88 13 a0 0f> + +// changing the TypedArray changes the Buffer also +arr[1] = 6000; + +console.log(buf); + // Prints: <Buffer 88 13 70 17> +``` + +The optional `byteOffset` and `length` arguments specify a memory range within +the `arrayBuffer` that will be shared by the `Buffer`. + +```js +const ab = new ArrayBuffer(10); +const buf = Buffer.from(ab, 0, 2); +console.log(buf.length); + // Prints: 2 +``` + +A `TypeError` will be thrown if `arrayBuffer` is not an `ArrayBuffer`. + +### Class Method: Buffer.from(buffer) +<!-- YAML +added: v3.0.0 +--> + +* `buffer` {Buffer} + +Copies the passed `buffer` data onto a new `Buffer` instance. + +```js +const buf1 = Buffer.from('buffer'); +const buf2 = Buffer.from(buf1); + +buf1[0] = 0x61; +console.log(buf1.toString()); + // 'auffer' +console.log(buf2.toString()); + // 'buffer' (copy is not changed) +``` + +A `TypeError` will be thrown if `buffer` is not a `Buffer`. + +### Class Method: Buffer.from(str[, encoding]) +<!-- YAML +added: v5.10.0 +--> + +* `str` {String} String to encode. +* `encoding` {String} Encoding to use, Default: `'utf8'` + +Creates a new `Buffer` containing the given JavaScript string `str`. If +provided, the `encoding` parameter identifies the character encoding. +If not provided, `encoding` defaults to `'utf8'`. + +```js +const buf1 = Buffer.from('this is a tést'); +console.log(buf1.toString()); + // prints: this is a tést +console.log(buf1.toString('ascii')); + // prints: this is a tC)st + +const buf2 = Buffer.from('7468697320697320612074c3a97374', 'hex'); +console.log(buf2.toString()); + // prints: this is a tést +``` + +A `TypeError` will be thrown if `str` is not a string. + +### Class Method: Buffer.alloc(size[, fill[, encoding]]) +<!-- YAML +added: v5.10.0 +--> + +* `size` {Number} +* `fill` {Value} Default: `undefined` +* `encoding` {String} Default: `utf8` + +Allocates a new `Buffer` of `size` bytes. If `fill` is `undefined`, the +`Buffer` will be *zero-filled*. + +```js +const buf = Buffer.alloc(5); +console.log(buf); + // <Buffer 00 00 00 00 00> +``` + +The `size` must be less than or equal to the value of +`require('buffer').kMaxLength` (on 64-bit architectures, `kMaxLength` is +`(2^31)-1`). Otherwise, a [`RangeError`][] is thrown. A zero-length Buffer will +be created if a `size` less than or equal to 0 is specified. + +If `fill` is specified, the allocated `Buffer` will be initialized by calling +`buf.fill(fill)`. See [`buf.fill()`][] for more information. + +```js +const buf = Buffer.alloc(5, 'a'); +console.log(buf); + // <Buffer 61 61 61 61 61> +``` + +If both `fill` and `encoding` are specified, the allocated `Buffer` will be +initialized by calling `buf.fill(fill, encoding)`. For example: + +```js +const buf = Buffer.alloc(11, 'aGVsbG8gd29ybGQ=', 'base64'); +console.log(buf); + // <Buffer 68 65 6c 6c 6f 20 77 6f 72 6c 64> +``` + +Calling `Buffer.alloc(size)` can be significantly slower than the alternative +`Buffer.allocUnsafe(size)` but ensures that the newly created `Buffer` instance +contents will *never contain sensitive data*. + +A `TypeError` will be thrown if `size` is not a number. + +### Class Method: Buffer.allocUnsafe(size) +<!-- YAML +added: v5.10.0 +--> + +* `size` {Number} + +Allocates a new *non-zero-filled* `Buffer` of `size` bytes. The `size` must +be less than or equal to the value of `require('buffer').kMaxLength` (on 64-bit +architectures, `kMaxLength` is `(2^31)-1`). Otherwise, a [`RangeError`][] is +thrown. A zero-length Buffer will be created if a `size` less than or equal to +0 is specified. + +The underlying memory for `Buffer` instances created in this way is *not +initialized*. The contents of the newly created `Buffer` are unknown and +*may contain sensitive data*. Use [`buf.fill(0)`][] to initialize such +`Buffer` instances to zeroes. + +```js +const buf = Buffer.allocUnsafe(5); +console.log(buf); + // <Buffer 78 e0 82 02 01> + // (octets will be different, every time) +buf.fill(0); +console.log(buf); + // <Buffer 00 00 00 00 00> +``` + +A `TypeError` will be thrown if `size` is not a number. + +Note that the `Buffer` module pre-allocates an internal `Buffer` instance of +size `Buffer.poolSize` that is used as a pool for the fast allocation of new +`Buffer` instances created using `Buffer.allocUnsafe(size)` (and the deprecated +`new Buffer(size)` constructor) only when `size` is less than or equal to +`Buffer.poolSize >> 1` (floor of `Buffer.poolSize` divided by two). The default +value of `Buffer.poolSize` is `8192` but can be modified. + +Use of this pre-allocated internal memory pool is a key difference between +calling `Buffer.alloc(size, fill)` vs. `Buffer.allocUnsafe(size).fill(fill)`. +Specifically, `Buffer.alloc(size, fill)` will *never* use the internal Buffer +pool, while `Buffer.allocUnsafe(size).fill(fill)` *will* use the internal +Buffer pool if `size` is less than or equal to half `Buffer.poolSize`. The +difference is subtle but can be important when an application requires the +additional performance that `Buffer.allocUnsafe(size)` provides. + +### Class Method: Buffer.allocUnsafeSlow(size) +<!-- YAML +added: v5.10.0 +--> + +* `size` {Number} + +Allocates a new *non-zero-filled* and non-pooled `Buffer` of `size` bytes. The +`size` must be less than or equal to the value of +`require('buffer').kMaxLength` (on 64-bit architectures, `kMaxLength` is +`(2^31)-1`). Otherwise, a [`RangeError`][] is thrown. A zero-length Buffer will +be created if a `size` less than or equal to 0 is specified. + +The underlying memory for `Buffer` instances created in this way is *not +initialized*. The contents of the newly created `Buffer` are unknown and +*may contain sensitive data*. Use [`buf.fill(0)`][] to initialize such +`Buffer` instances to zeroes. + +When using `Buffer.allocUnsafe()` to allocate new `Buffer` instances, +allocations under 4KB are, by default, sliced from a single pre-allocated +`Buffer`. This allows applications to avoid the garbage collection overhead of +creating many individually allocated Buffers. This approach improves both +performance and memory usage by eliminating the need to track and cleanup as +many `Persistent` objects. + +However, in the case where a developer may need to retain a small chunk of +memory from a pool for an indeterminate amount of time, it may be appropriate +to create an un-pooled Buffer instance using `Buffer.allocUnsafeSlow()` then +copy out the relevant bits. + +```js +// need to keep around a few small chunks of memory +const store = []; + +socket.on('readable', () => { + const data = socket.read(); + // allocate for retained data + const sb = Buffer.allocUnsafeSlow(10); + // copy the data into the new allocation + data.copy(sb, 0, 0, 10); + store.push(sb); +}); +``` + +Use of `Buffer.allocUnsafeSlow()` should be used only as a last resort *after* +a developer has observed undue memory retention in their applications. + +A `TypeError` will be thrown if `size` is not a number. + +### All the Rest + +The rest of the `Buffer` API is exactly the same as in node.js. +[See the docs](https://nodejs.org/api/buffer.html). + + +## Related links + +- [Node.js issue: Buffer(number) is unsafe](https://github.com/nodejs/node/issues/4660) +- [Node.js Enhancement Proposal: Buffer.from/Buffer.alloc/Buffer.zalloc/Buffer() soft-deprecate](https://github.com/nodejs/node-eps/pull/4) + +## Why is `Buffer` unsafe? + +Today, the node.js `Buffer` constructor is overloaded to handle many different argument +types like `String`, `Array`, `Object`, `TypedArrayView` (`Uint8Array`, etc.), +`ArrayBuffer`, and also `Number`. + +The API is optimized for convenience: you can throw any type at it, and it will try to do +what you want. + +Because the Buffer constructor is so powerful, you often see code like this: + +```js +// Convert UTF-8 strings to hex +function toHex (str) { + return new Buffer(str).toString('hex') +} +``` + +***But what happens if `toHex` is called with a `Number` argument?*** + +### Remote Memory Disclosure + +If an attacker can make your program call the `Buffer` constructor with a `Number` +argument, then they can make it allocate uninitialized memory from the node.js process. +This could potentially disclose TLS private keys, user data, or database passwords. + +When the `Buffer` constructor is passed a `Number` argument, it returns an +**UNINITIALIZED** block of memory of the specified `size`. When you create a `Buffer` like +this, you **MUST** overwrite the contents before returning it to the user. + +From the [node.js docs](https://nodejs.org/api/buffer.html#buffer_new_buffer_size): + +> `new Buffer(size)` +> +> - `size` Number +> +> The underlying memory for `Buffer` instances created in this way is not initialized. +> **The contents of a newly created `Buffer` are unknown and could contain sensitive +> data.** Use `buf.fill(0)` to initialize a Buffer to zeroes. + +(Emphasis our own.) + +Whenever the programmer intended to create an uninitialized `Buffer` you often see code +like this: + +```js +var buf = new Buffer(16) + +// Immediately overwrite the uninitialized buffer with data from another buffer +for (var i = 0; i < buf.length; i++) { + buf[i] = otherBuf[i] +} +``` + + +### Would this ever be a problem in real code? + +Yes. It's surprisingly common to forget to check the type of your variables in a +dynamically-typed language like JavaScript. + +Usually the consequences of assuming the wrong type is that your program crashes with an +uncaught exception. But the failure mode for forgetting to check the type of arguments to +the `Buffer` constructor is more catastrophic. + +Here's an example of a vulnerable service that takes a JSON payload and converts it to +hex: + +```js +// Take a JSON payload {str: "some string"} and convert it to hex +var server = http.createServer(function (req, res) { + var data = '' + req.setEncoding('utf8') + req.on('data', function (chunk) { + data += chunk + }) + req.on('end', function () { + var body = JSON.parse(data) + res.end(new Buffer(body.str).toString('hex')) + }) +}) + +server.listen(8080) +``` + +In this example, an http client just has to send: + +```json +{ + "str": 1000 +} +``` + +and it will get back 1,000 bytes of uninitialized memory from the server. + +This is a very serious bug. It's similar in severity to the +[the Heartbleed bug](http://heartbleed.com/) that allowed disclosure of OpenSSL process +memory by remote attackers. + + +### Which real-world packages were vulnerable? + +#### [`bittorrent-dht`](https://www.npmjs.com/package/bittorrent-dht) + +[Mathias Buus](https://github.com/mafintosh) and I +([Feross Aboukhadijeh](http://feross.org/)) found this issue in one of our own packages, +[`bittorrent-dht`](https://www.npmjs.com/package/bittorrent-dht). The bug would allow +anyone on the internet to send a series of messages to a user of `bittorrent-dht` and get +them to reveal 20 bytes at a time of uninitialized memory from the node.js process. + +Here's +[the commit](https://github.com/feross/bittorrent-dht/commit/6c7da04025d5633699800a99ec3fbadf70ad35b8) +that fixed it. We released a new fixed version, created a +[Node Security Project disclosure](https://nodesecurity.io/advisories/68), and deprecated all +vulnerable versions on npm so users will get a warning to upgrade to a newer version. + +#### [`ws`](https://www.npmjs.com/package/ws) + +That got us wondering if there were other vulnerable packages. Sure enough, within a short +period of time, we found the same issue in [`ws`](https://www.npmjs.com/package/ws), the +most popular WebSocket implementation in node.js. + +If certain APIs were called with `Number` parameters instead of `String` or `Buffer` as +expected, then uninitialized server memory would be disclosed to the remote peer. + +These were the vulnerable methods: + +```js +socket.send(number) +socket.ping(number) +socket.pong(number) +``` + +Here's a vulnerable socket server with some echo functionality: + +```js +server.on('connection', function (socket) { + socket.on('message', function (message) { + message = JSON.parse(message) + if (message.type === 'echo') { + socket.send(message.data) // send back the user's message + } + }) +}) +``` + +`socket.send(number)` called on the server, will disclose server memory. + +Here's [the release](https://github.com/websockets/ws/releases/tag/1.0.1) where the issue +was fixed, with a more detailed explanation. Props to +[Arnout Kazemier](https://github.com/3rd-Eden) for the quick fix. Here's the +[Node Security Project disclosure](https://nodesecurity.io/advisories/67). + + +### What's the solution? + +It's important that node.js offers a fast way to get memory otherwise performance-critical +applications would needlessly get a lot slower. + +But we need a better way to *signal our intent* as programmers. **When we want +uninitialized memory, we should request it explicitly.** + +Sensitive functionality should not be packed into a developer-friendly API that loosely +accepts many different types. This type of API encourages the lazy practice of passing +variables in without checking the type very carefully. + +#### A new API: `Buffer.allocUnsafe(number)` + +The functionality of creating buffers with uninitialized memory should be part of another +API. We propose `Buffer.allocUnsafe(number)`. This way, it's not part of an API that +frequently gets user input of all sorts of different types passed into it. + +```js +var buf = Buffer.allocUnsafe(16) // careful, uninitialized memory! + +// Immediately overwrite the uninitialized buffer with data from another buffer +for (var i = 0; i < buf.length; i++) { + buf[i] = otherBuf[i] +} +``` + + +### How do we fix node.js core? + +We sent [a PR to node.js core](https://github.com/nodejs/node/pull/4514) (merged as +`semver-major`) which defends against one case: + +```js +var str = 16 +new Buffer(str, 'utf8') +``` + +In this situation, it's implied that the programmer intended the first argument to be a +string, since they passed an encoding as a second argument. Today, node.js will allocate +uninitialized memory in the case of `new Buffer(number, encoding)`, which is probably not +what the programmer intended. + +But this is only a partial solution, since if the programmer does `new Buffer(variable)` +(without an `encoding` parameter) there's no way to know what they intended. If `variable` +is sometimes a number, then uninitialized memory will sometimes be returned. + +### What's the real long-term fix? + +We could deprecate and remove `new Buffer(number)` and use `Buffer.allocUnsafe(number)` when +we need uninitialized memory. But that would break 1000s of packages. + +~~We believe the best solution is to:~~ + +~~1. Change `new Buffer(number)` to return safe, zeroed-out memory~~ + +~~2. Create a new API for creating uninitialized Buffers. We propose: `Buffer.allocUnsafe(number)`~~ + +#### Update + +We now support adding three new APIs: + +- `Buffer.from(value)` - convert from any type to a buffer +- `Buffer.alloc(size)` - create a zero-filled buffer +- `Buffer.allocUnsafe(size)` - create an uninitialized buffer with given size + +This solves the core problem that affected `ws` and `bittorrent-dht` which is +`Buffer(variable)` getting tricked into taking a number argument. + +This way, existing code continues working and the impact on the npm ecosystem will be +minimal. Over time, npm maintainers can migrate performance-critical code to use +`Buffer.allocUnsafe(number)` instead of `new Buffer(number)`. + + +### Conclusion + +We think there's a serious design issue with the `Buffer` API as it exists today. It +promotes insecure software by putting high-risk functionality into a convenient API +with friendly "developer ergonomics". + +This wasn't merely a theoretical exercise because we found the issue in some of the +most popular npm packages. + +Fortunately, there's an easy fix that can be applied today. Use `safe-buffer` in place of +`buffer`. + +```js +var Buffer = require('safe-buffer').Buffer +``` + +Eventually, we hope that node.js core can switch to this new, safer behavior. We believe +the impact on the ecosystem would be minimal since it's not a breaking change. +Well-maintained, popular packages would be updated to use `Buffer.alloc` quickly, while +older, insecure packages would magically become safe from this attack vector. + + +## links + +- [Node.js PR: buffer: throw if both length and enc are passed](https://github.com/nodejs/node/pull/4514) +- [Node Security Project disclosure for `ws`](https://nodesecurity.io/advisories/67) +- [Node Security Project disclosure for`bittorrent-dht`](https://nodesecurity.io/advisories/68) + + +## credit + +The original issues in `bittorrent-dht` +([disclosure](https://nodesecurity.io/advisories/68)) and +`ws` ([disclosure](https://nodesecurity.io/advisories/67)) were discovered by +[Mathias Buus](https://github.com/mafintosh) and +[Feross Aboukhadijeh](http://feross.org/). + +Thanks to [Adam Baldwin](https://github.com/evilpacket) for helping disclose these issues +and for his work running the [Node Security Project](https://nodesecurity.io/). + +Thanks to [John Hiesey](https://github.com/jhiesey) for proofreading this README and +auditing the code. + + +## license + +MIT. Copyright (C) [Feross Aboukhadijeh](http://feross.org) diff --git a/middleware/node_modules/safe-buffer/index.d.ts b/middleware/node_modules/safe-buffer/index.d.ts new file mode 100644 index 0000000..e9fed80 --- /dev/null +++ b/middleware/node_modules/safe-buffer/index.d.ts @@ -0,0 +1,187 @@ +declare module "safe-buffer" { + export class Buffer { + length: number + write(string: string, offset?: number, length?: number, encoding?: string): number; + toString(encoding?: string, start?: number, end?: number): string; + toJSON(): { type: 'Buffer', data: any[] }; + equals(otherBuffer: Buffer): boolean; + compare(otherBuffer: Buffer, targetStart?: number, targetEnd?: number, sourceStart?: number, sourceEnd?: number): number; + copy(targetBuffer: Buffer, targetStart?: number, sourceStart?: number, sourceEnd?: number): number; + slice(start?: number, end?: number): Buffer; + writeUIntLE(value: number, offset: number, byteLength: number, noAssert?: boolean): number; + writeUIntBE(value: number, offset: number, byteLength: number, noAssert?: boolean): number; + writeIntLE(value: number, offset: number, byteLength: number, noAssert?: boolean): number; + writeIntBE(value: number, offset: number, byteLength: number, noAssert?: boolean): number; + readUIntLE(offset: number, byteLength: number, noAssert?: boolean): number; + readUIntBE(offset: number, byteLength: number, noAssert?: boolean): number; + readIntLE(offset: number, byteLength: number, noAssert?: boolean): number; + readIntBE(offset: number, byteLength: number, noAssert?: boolean): number; + readUInt8(offset: number, noAssert?: boolean): number; + readUInt16LE(offset: number, noAssert?: boolean): number; + readUInt16BE(offset: number, noAssert?: boolean): number; + readUInt32LE(offset: number, noAssert?: boolean): number; + readUInt32BE(offset: number, noAssert?: boolean): number; + readInt8(offset: number, noAssert?: boolean): number; + readInt16LE(offset: number, noAssert?: boolean): number; + readInt16BE(offset: number, noAssert?: boolean): number; + readInt32LE(offset: number, noAssert?: boolean): number; + readInt32BE(offset: number, noAssert?: boolean): number; + readFloatLE(offset: number, noAssert?: boolean): number; + readFloatBE(offset: number, noAssert?: boolean): number; + readDoubleLE(offset: number, noAssert?: boolean): number; + readDoubleBE(offset: number, noAssert?: boolean): number; + swap16(): Buffer; + swap32(): Buffer; + swap64(): Buffer; + writeUInt8(value: number, offset: number, noAssert?: boolean): number; + writeUInt16LE(value: number, offset: number, noAssert?: boolean): number; + writeUInt16BE(value: number, offset: number, noAssert?: boolean): number; + writeUInt32LE(value: number, offset: number, noAssert?: boolean): number; + writeUInt32BE(value: number, offset: number, noAssert?: boolean): number; + writeInt8(value: number, offset: number, noAssert?: boolean): number; + writeInt16LE(value: number, offset: number, noAssert?: boolean): number; + writeInt16BE(value: number, offset: number, noAssert?: boolean): number; + writeInt32LE(value: number, offset: number, noAssert?: boolean): number; + writeInt32BE(value: number, offset: number, noAssert?: boolean): number; + writeFloatLE(value: number, offset: number, noAssert?: boolean): number; + writeFloatBE(value: number, offset: number, noAssert?: boolean): number; + writeDoubleLE(value: number, offset: number, noAssert?: boolean): number; + writeDoubleBE(value: number, offset: number, noAssert?: boolean): number; + fill(value: any, offset?: number, end?: number): this; + indexOf(value: string | number | Buffer, byteOffset?: number, encoding?: string): number; + lastIndexOf(value: string | number | Buffer, byteOffset?: number, encoding?: string): number; + includes(value: string | number | Buffer, byteOffset?: number, encoding?: string): boolean; + + /** + * Allocates a new buffer containing the given {str}. + * + * @param str String to store in buffer. + * @param encoding encoding to use, optional. Default is 'utf8' + */ + constructor (str: string, encoding?: string); + /** + * Allocates a new buffer of {size} octets. + * + * @param size count of octets to allocate. + */ + constructor (size: number); + /** + * Allocates a new buffer containing the given {array} of octets. + * + * @param array The octets to store. + */ + constructor (array: Uint8Array); + /** + * Produces a Buffer backed by the same allocated memory as + * the given {ArrayBuffer}. + * + * + * @param arrayBuffer The ArrayBuffer with which to share memory. + */ + constructor (arrayBuffer: ArrayBuffer); + /** + * Allocates a new buffer containing the given {array} of octets. + * + * @param array The octets to store. + */ + constructor (array: any[]); + /** + * Copies the passed {buffer} data onto a new {Buffer} instance. + * + * @param buffer The buffer to copy. + */ + constructor (buffer: Buffer); + prototype: Buffer; + /** + * Allocates a new Buffer using an {array} of octets. + * + * @param array + */ + static from(array: any[]): Buffer; + /** + * When passed a reference to the .buffer property of a TypedArray instance, + * the newly created Buffer will share the same allocated memory as the TypedArray. + * The optional {byteOffset} and {length} arguments specify a memory range + * within the {arrayBuffer} that will be shared by the Buffer. + * + * @param arrayBuffer The .buffer property of a TypedArray or a new ArrayBuffer() + * @param byteOffset + * @param length + */ + static from(arrayBuffer: ArrayBuffer, byteOffset?: number, length?: number): Buffer; + /** + * Copies the passed {buffer} data onto a new Buffer instance. + * + * @param buffer + */ + static from(buffer: Buffer): Buffer; + /** + * Creates a new Buffer containing the given JavaScript string {str}. + * If provided, the {encoding} parameter identifies the character encoding. + * If not provided, {encoding} defaults to 'utf8'. + * + * @param str + */ + static from(str: string, encoding?: string): Buffer; + /** + * Returns true if {obj} is a Buffer + * + * @param obj object to test. + */ + static isBuffer(obj: any): obj is Buffer; + /** + * Returns true if {encoding} is a valid encoding argument. + * Valid string encodings in Node 0.12: 'ascii'|'utf8'|'utf16le'|'ucs2'(alias of 'utf16le')|'base64'|'binary'(deprecated)|'hex' + * + * @param encoding string to test. + */ + static isEncoding(encoding: string): boolean; + /** + * Gives the actual byte length of a string. encoding defaults to 'utf8'. + * This is not the same as String.prototype.length since that returns the number of characters in a string. + * + * @param string string to test. + * @param encoding encoding used to evaluate (defaults to 'utf8') + */ + static byteLength(string: string, encoding?: string): number; + /** + * Returns a buffer which is the result of concatenating all the buffers in the list together. + * + * If the list has no items, or if the totalLength is 0, then it returns a zero-length buffer. + * If the list has exactly one item, then the first item of the list is returned. + * If the list has more than one item, then a new Buffer is created. + * + * @param list An array of Buffer objects to concatenate + * @param totalLength Total length of the buffers when concatenated. + * If totalLength is not provided, it is read from the buffers in the list. However, this adds an additional loop to the function, so it is faster to provide the length explicitly. + */ + static concat(list: Buffer[], totalLength?: number): Buffer; + /** + * The same as buf1.compare(buf2). + */ + static compare(buf1: Buffer, buf2: Buffer): number; + /** + * Allocates a new buffer of {size} octets. + * + * @param size count of octets to allocate. + * @param fill if specified, buffer will be initialized by calling buf.fill(fill). + * If parameter is omitted, buffer will be filled with zeros. + * @param encoding encoding used for call to buf.fill while initalizing + */ + static alloc(size: number, fill?: string | Buffer | number, encoding?: string): Buffer; + /** + * Allocates a new buffer of {size} octets, leaving memory not initialized, so the contents + * of the newly created Buffer are unknown and may contain sensitive data. + * + * @param size count of octets to allocate + */ + static allocUnsafe(size: number): Buffer; + /** + * Allocates a new non-pooled buffer of {size} octets, leaving memory not initialized, so the contents + * of the newly created Buffer are unknown and may contain sensitive data. + * + * @param size count of octets to allocate + */ + static allocUnsafeSlow(size: number): Buffer; + } +}
\ No newline at end of file diff --git a/middleware/node_modules/safe-buffer/index.js b/middleware/node_modules/safe-buffer/index.js new file mode 100644 index 0000000..f8d3ec9 --- /dev/null +++ b/middleware/node_modules/safe-buffer/index.js @@ -0,0 +1,65 @@ +/*! safe-buffer. MIT License. Feross Aboukhadijeh <https://feross.org/opensource> */ +/* eslint-disable node/no-deprecated-api */ +var buffer = require('buffer') +var Buffer = buffer.Buffer + +// alternative to using Object.keys for old browsers +function copyProps (src, dst) { + for (var key in src) { + dst[key] = src[key] + } +} +if (Buffer.from && Buffer.alloc && Buffer.allocUnsafe && Buffer.allocUnsafeSlow) { + module.exports = buffer +} else { + // Copy properties from require('buffer') + copyProps(buffer, exports) + exports.Buffer = SafeBuffer +} + +function SafeBuffer (arg, encodingOrOffset, length) { + return Buffer(arg, encodingOrOffset, length) +} + +SafeBuffer.prototype = Object.create(Buffer.prototype) + +// Copy static methods from Buffer +copyProps(Buffer, SafeBuffer) + +SafeBuffer.from = function (arg, encodingOrOffset, length) { + if (typeof arg === 'number') { + throw new TypeError('Argument must not be a number') + } + return Buffer(arg, encodingOrOffset, length) +} + +SafeBuffer.alloc = function (size, fill, encoding) { + if (typeof size !== 'number') { + throw new TypeError('Argument must be a number') + } + var buf = Buffer(size) + if (fill !== undefined) { + if (typeof encoding === 'string') { + buf.fill(fill, encoding) + } else { + buf.fill(fill) + } + } else { + buf.fill(0) + } + return buf +} + +SafeBuffer.allocUnsafe = function (size) { + if (typeof size !== 'number') { + throw new TypeError('Argument must be a number') + } + return Buffer(size) +} + +SafeBuffer.allocUnsafeSlow = function (size) { + if (typeof size !== 'number') { + throw new TypeError('Argument must be a number') + } + return buffer.SlowBuffer(size) +} diff --git a/middleware/node_modules/safe-buffer/package.json b/middleware/node_modules/safe-buffer/package.json new file mode 100644 index 0000000..f2869e2 --- /dev/null +++ b/middleware/node_modules/safe-buffer/package.json @@ -0,0 +1,51 @@ +{ + "name": "safe-buffer", + "description": "Safer Node.js Buffer API", + "version": "5.2.1", + "author": { + "name": "Feross Aboukhadijeh", + "email": "feross@feross.org", + "url": "https://feross.org" + }, + "bugs": { + "url": "https://github.com/feross/safe-buffer/issues" + }, + "devDependencies": { + "standard": "*", + "tape": "^5.0.0" + }, + "homepage": "https://github.com/feross/safe-buffer", + "keywords": [ + "buffer", + "buffer allocate", + "node security", + "safe", + "safe-buffer", + "security", + "uninitialized" + ], + "license": "MIT", + "main": "index.js", + "types": "index.d.ts", + "repository": { + "type": "git", + "url": "git://github.com/feross/safe-buffer.git" + }, + "scripts": { + "test": "standard && tape test/*.js" + }, + "funding": [ + { + "type": "github", + "url": "https://github.com/sponsors/feross" + }, + { + "type": "patreon", + "url": "https://www.patreon.com/feross" + }, + { + "type": "consulting", + "url": "https://feross.org/support" + } + ] +} |