diff options
Diffstat (limited to 'g4f/Provider/npm/node_modules/undici/lib/handler/RedirectHandler.js')
| -rw-r--r-- | g4f/Provider/npm/node_modules/undici/lib/handler/RedirectHandler.js | 216 |
1 files changed, 0 insertions, 216 deletions
diff --git a/g4f/Provider/npm/node_modules/undici/lib/handler/RedirectHandler.js b/g4f/Provider/npm/node_modules/undici/lib/handler/RedirectHandler.js deleted file mode 100644 index baca27ed..00000000 --- a/g4f/Provider/npm/node_modules/undici/lib/handler/RedirectHandler.js +++ /dev/null @@ -1,216 +0,0 @@ -'use strict' - -const util = require('../core/util') -const { kBodyUsed } = require('../core/symbols') -const assert = require('assert') -const { InvalidArgumentError } = require('../core/errors') -const EE = require('events') - -const redirectableStatusCodes = [300, 301, 302, 303, 307, 308] - -const kBody = Symbol('body') - -class BodyAsyncIterable { - constructor (body) { - this[kBody] = body - this[kBodyUsed] = false - } - - async * [Symbol.asyncIterator] () { - assert(!this[kBodyUsed], 'disturbed') - this[kBodyUsed] = true - yield * this[kBody] - } -} - -class RedirectHandler { - constructor (dispatch, maxRedirections, opts, handler) { - if (maxRedirections != null && (!Number.isInteger(maxRedirections) || maxRedirections < 0)) { - throw new InvalidArgumentError('maxRedirections must be a positive number') - } - - util.validateHandler(handler, opts.method, opts.upgrade) - - this.dispatch = dispatch - this.location = null - this.abort = null - this.opts = { ...opts, maxRedirections: 0 } // opts must be a copy - this.maxRedirections = maxRedirections - this.handler = handler - this.history = [] - - if (util.isStream(this.opts.body)) { - // TODO (fix): Provide some way for the user to cache the file to e.g. /tmp - // so that it can be dispatched again? - // TODO (fix): Do we need 100-expect support to provide a way to do this properly? - if (util.bodyLength(this.opts.body) === 0) { - this.opts.body - .on('data', function () { - assert(false) - }) - } - - if (typeof this.opts.body.readableDidRead !== 'boolean') { - this.opts.body[kBodyUsed] = false - EE.prototype.on.call(this.opts.body, 'data', function () { - this[kBodyUsed] = true - }) - } - } else if (this.opts.body && typeof this.opts.body.pipeTo === 'function') { - // TODO (fix): We can't access ReadableStream internal state - // to determine whether or not it has been disturbed. This is just - // a workaround. - this.opts.body = new BodyAsyncIterable(this.opts.body) - } else if ( - this.opts.body && - typeof this.opts.body !== 'string' && - !ArrayBuffer.isView(this.opts.body) && - util.isIterable(this.opts.body) - ) { - // TODO: Should we allow re-using iterable if !this.opts.idempotent - // or through some other flag? - this.opts.body = new BodyAsyncIterable(this.opts.body) - } - } - - onConnect (abort) { - this.abort = abort - this.handler.onConnect(abort, { history: this.history }) - } - - onUpgrade (statusCode, headers, socket) { - this.handler.onUpgrade(statusCode, headers, socket) - } - - onError (error) { - this.handler.onError(error) - } - - onHeaders (statusCode, headers, resume, statusText) { - this.location = this.history.length >= this.maxRedirections || util.isDisturbed(this.opts.body) - ? null - : parseLocation(statusCode, headers) - - if (this.opts.origin) { - this.history.push(new URL(this.opts.path, this.opts.origin)) - } - - if (!this.location) { - return this.handler.onHeaders(statusCode, headers, resume, statusText) - } - - const { origin, pathname, search } = util.parseURL(new URL(this.location, this.opts.origin && new URL(this.opts.path, this.opts.origin))) - const path = search ? `${pathname}${search}` : pathname - - // Remove headers referring to the original URL. - // By default it is Host only, unless it's a 303 (see below), which removes also all Content-* headers. - // https://tools.ietf.org/html/rfc7231#section-6.4 - this.opts.headers = cleanRequestHeaders(this.opts.headers, statusCode === 303, this.opts.origin !== origin) - this.opts.path = path - this.opts.origin = origin - this.opts.maxRedirections = 0 - this.opts.query = null - - // https://tools.ietf.org/html/rfc7231#section-6.4.4 - // In case of HTTP 303, always replace method to be either HEAD or GET - if (statusCode === 303 && this.opts.method !== 'HEAD') { - this.opts.method = 'GET' - this.opts.body = null - } - } - - onData (chunk) { - if (this.location) { - /* - https://tools.ietf.org/html/rfc7231#section-6.4 - - TLDR: undici always ignores 3xx response bodies. - - Redirection is used to serve the requested resource from another URL, so it is assumes that - no body is generated (and thus can be ignored). Even though generating a body is not prohibited. - - For status 301, 302, 303, 307 and 308 (the latter from RFC 7238), the specs mention that the body usually - (which means it's optional and not mandated) contain just an hyperlink to the value of - the Location response header, so the body can be ignored safely. - - For status 300, which is "Multiple Choices", the spec mentions both generating a Location - response header AND a response body with the other possible location to follow. - Since the spec explicitily chooses not to specify a format for such body and leave it to - servers and browsers implementors, we ignore the body as there is no specified way to eventually parse it. - */ - } else { - return this.handler.onData(chunk) - } - } - - onComplete (trailers) { - if (this.location) { - /* - https://tools.ietf.org/html/rfc7231#section-6.4 - - TLDR: undici always ignores 3xx response trailers as they are not expected in case of redirections - and neither are useful if present. - - See comment on onData method above for more detailed informations. - */ - - this.location = null - this.abort = null - - this.dispatch(this.opts, this) - } else { - this.handler.onComplete(trailers) - } - } - - onBodySent (chunk) { - if (this.handler.onBodySent) { - this.handler.onBodySent(chunk) - } - } -} - -function parseLocation (statusCode, headers) { - if (redirectableStatusCodes.indexOf(statusCode) === -1) { - return null - } - - for (let i = 0; i < headers.length; i += 2) { - if (headers[i].toString().toLowerCase() === 'location') { - return headers[i + 1] - } - } -} - -// https://tools.ietf.org/html/rfc7231#section-6.4.4 -function shouldRemoveHeader (header, removeContent, unknownOrigin) { - return ( - (header.length === 4 && header.toString().toLowerCase() === 'host') || - (removeContent && header.toString().toLowerCase().indexOf('content-') === 0) || - (unknownOrigin && header.length === 13 && header.toString().toLowerCase() === 'authorization') || - (unknownOrigin && header.length === 6 && header.toString().toLowerCase() === 'cookie') - ) -} - -// https://tools.ietf.org/html/rfc7231#section-6.4 -function cleanRequestHeaders (headers, removeContent, unknownOrigin) { - const ret = [] - if (Array.isArray(headers)) { - for (let i = 0; i < headers.length; i += 2) { - if (!shouldRemoveHeader(headers[i], removeContent, unknownOrigin)) { - ret.push(headers[i], headers[i + 1]) - } - } - } else if (headers && typeof headers === 'object') { - for (const key of Object.keys(headers)) { - if (!shouldRemoveHeader(key, removeContent, unknownOrigin)) { - ret.push(key, headers[key]) - } - } - } else { - assert(headers == null, 'headers must be an object or an array') - } - return ret -} - -module.exports = RedirectHandler |