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1 | import { createWriteStream, remove } from 'fs-extra' | |
2 | import got, { CancelableRequest, Options as GotOptions, RequestError } from 'got' | |
3 | import { HttpProxyAgent, HttpsProxyAgent } from 'hpagent' | |
4 | import { join } from 'path' | |
5 | import { CONFIG } from '../initializers/config' | |
6 | import { ACTIVITY_PUB, PEERTUBE_VERSION, REQUEST_TIMEOUT, WEBSERVER } from '../initializers/constants' | |
7 | import { pipelinePromise } from './core-utils' | |
8 | import { processImage } from './image-utils' | |
9 | import { logger } from './logger' | |
10 | import { getProxy, isProxyEnabled } from './proxy' | |
11 | ||
12 | const httpSignature = require('http-signature') | |
13 | ||
14 | export interface PeerTubeRequestError extends Error { | |
15 | statusCode?: number | |
16 | responseBody?: any | |
17 | } | |
18 | ||
19 | type PeerTubeRequestOptions = { | |
20 | activityPub?: boolean | |
21 | bodyKBLimit?: number // 1MB | |
22 | httpSignature?: { | |
23 | algorithm: string | |
24 | authorizationHeaderName: string | |
25 | keyId: string | |
26 | key: string | |
27 | headers: string[] | |
28 | } | |
29 | jsonResponse?: boolean | |
30 | } & Pick<GotOptions, 'headers' | 'json' | 'method' | 'searchParams'> | |
31 | ||
32 | const peertubeGot = got.extend({ | |
33 | ...getAgent(), | |
34 | ||
35 | headers: { | |
36 | 'user-agent': getUserAgent() | |
37 | }, | |
38 | ||
39 | handlers: [ | |
40 | (options, next) => { | |
41 | const promiseOrStream = next(options) as CancelableRequest<any> | |
42 | const bodyKBLimit = options.context?.bodyKBLimit as number | |
43 | if (!bodyKBLimit) throw new Error('No KB limit for this request') | |
44 | ||
45 | const bodyLimit = bodyKBLimit * 1000 | |
46 | ||
47 | /* eslint-disable @typescript-eslint/no-floating-promises */ | |
48 | promiseOrStream.on('downloadProgress', progress => { | |
49 | if (progress.transferred > bodyLimit && progress.percent !== 1) { | |
50 | const message = `Exceeded the download limit of ${bodyLimit} B` | |
51 | logger.warn(message) | |
52 | ||
53 | // CancelableRequest | |
54 | if (promiseOrStream.cancel) { | |
55 | promiseOrStream.cancel() | |
56 | return | |
57 | } | |
58 | ||
59 | // Stream | |
60 | (promiseOrStream as any).destroy() | |
61 | } | |
62 | }) | |
63 | ||
64 | return promiseOrStream | |
65 | } | |
66 | ], | |
67 | ||
68 | hooks: { | |
69 | beforeRequest: [ | |
70 | options => { | |
71 | const headers = options.headers || {} | |
72 | headers['host'] = options.url.host | |
73 | }, | |
74 | ||
75 | options => { | |
76 | const httpSignatureOptions = options.context?.httpSignature | |
77 | ||
78 | if (httpSignatureOptions) { | |
79 | const method = options.method ?? 'GET' | |
80 | const path = options.path ?? options.url.pathname | |
81 | ||
82 | if (!method || !path) { | |
83 | throw new Error(`Cannot sign request without method (${method}) or path (${path}) ${options}`) | |
84 | } | |
85 | ||
86 | httpSignature.signRequest({ | |
87 | getHeader: function (header) { | |
88 | return options.headers[header] | |
89 | }, | |
90 | ||
91 | setHeader: function (header, value) { | |
92 | options.headers[header] = value | |
93 | }, | |
94 | ||
95 | method, | |
96 | path | |
97 | }, httpSignatureOptions) | |
98 | } | |
99 | }, | |
100 | ||
101 | (options: GotOptions) => { | |
102 | options.timeout = REQUEST_TIMEOUT | |
103 | } | |
104 | ] | |
105 | } | |
106 | }) | |
107 | ||
108 | function doRequest (url: string, options: PeerTubeRequestOptions = {}) { | |
109 | const gotOptions = buildGotOptions(options) | |
110 | ||
111 | return peertubeGot(url, gotOptions) | |
112 | .catch(err => { throw buildRequestError(err) }) | |
113 | } | |
114 | ||
115 | function doJSONRequest <T> (url: string, options: PeerTubeRequestOptions = {}) { | |
116 | const gotOptions = buildGotOptions(options) | |
117 | ||
118 | return peertubeGot<T>(url, { ...gotOptions, responseType: 'json' }) | |
119 | .catch(err => { throw buildRequestError(err) }) | |
120 | } | |
121 | ||
122 | async function doRequestAndSaveToFile ( | |
123 | url: string, | |
124 | destPath: string, | |
125 | options: PeerTubeRequestOptions = {} | |
126 | ) { | |
127 | const gotOptions = buildGotOptions(options) | |
128 | ||
129 | const outFile = createWriteStream(destPath) | |
130 | ||
131 | try { | |
132 | await pipelinePromise( | |
133 | peertubeGot.stream(url, gotOptions), | |
134 | outFile | |
135 | ) | |
136 | } catch (err) { | |
137 | remove(destPath) | |
138 | .catch(err => logger.error('Cannot remove %s after request failure.', destPath, { err })) | |
139 | ||
140 | throw buildRequestError(err) | |
141 | } | |
142 | } | |
143 | ||
144 | async function downloadImage (url: string, destDir: string, destName: string, size: { width: number, height: number }) { | |
145 | const tmpPath = join(CONFIG.STORAGE.TMP_DIR, 'pending-' + destName) | |
146 | await doRequestAndSaveToFile(url, tmpPath) | |
147 | ||
148 | const destPath = join(destDir, destName) | |
149 | ||
150 | try { | |
151 | await processImage(tmpPath, destPath, size) | |
152 | } catch (err) { | |
153 | await remove(tmpPath) | |
154 | ||
155 | throw err | |
156 | } | |
157 | } | |
158 | ||
159 | function getAgent () { | |
160 | if (!isProxyEnabled()) return {} | |
161 | ||
162 | const proxy = getProxy() | |
163 | ||
164 | logger.info('Using proxy %s.', proxy) | |
165 | ||
166 | const proxyAgentOptions = { | |
167 | keepAlive: true, | |
168 | keepAliveMsecs: 1000, | |
169 | maxSockets: 256, | |
170 | maxFreeSockets: 256, | |
171 | scheduling: 'lifo' as 'lifo', | |
172 | proxy | |
173 | } | |
174 | ||
175 | return { | |
176 | agent: { | |
177 | http: new HttpProxyAgent(proxyAgentOptions), | |
178 | https: new HttpsProxyAgent(proxyAgentOptions) | |
179 | } | |
180 | } | |
181 | } | |
182 | ||
183 | function getUserAgent () { | |
184 | return `PeerTube/${PEERTUBE_VERSION} (+${WEBSERVER.URL})` | |
185 | } | |
186 | ||
187 | // --------------------------------------------------------------------------- | |
188 | ||
189 | export { | |
190 | doRequest, | |
191 | doJSONRequest, | |
192 | doRequestAndSaveToFile, | |
193 | downloadImage | |
194 | } | |
195 | ||
196 | // --------------------------------------------------------------------------- | |
197 | ||
198 | function buildGotOptions (options: PeerTubeRequestOptions) { | |
199 | const { activityPub, bodyKBLimit = 1000 } = options | |
200 | ||
201 | const context = { bodyKBLimit, httpSignature: options.httpSignature } | |
202 | ||
203 | let headers = options.headers || {} | |
204 | ||
205 | if (!headers.date) { | |
206 | headers = { ...headers, date: new Date().toUTCString() } | |
207 | } | |
208 | ||
209 | if (activityPub && !headers.accept) { | |
210 | headers = { ...headers, accept: ACTIVITY_PUB.ACCEPT_HEADER } | |
211 | } | |
212 | ||
213 | return { | |
214 | method: options.method, | |
215 | dnsCache: true, | |
216 | json: options.json, | |
217 | searchParams: options.searchParams, | |
218 | headers, | |
219 | context | |
220 | } | |
221 | } | |
222 | ||
223 | function buildRequestError (error: RequestError) { | |
224 | const newError: PeerTubeRequestError = new Error(error.message) | |
225 | newError.name = error.name | |
226 | newError.stack = error.stack | |
227 | ||
228 | if (error.response) { | |
229 | newError.responseBody = error.response.body | |
230 | newError.statusCode = error.response.statusCode | |
231 | } | |
232 | ||
233 | return newError | |
234 | } |