SSH server & endpoint

package.json

@@ -24,6 +24,10 @@
     "@types/safe-compare": "^1.1.0",
     "@types/semver": "^7.1.0",
     "@types/tar-fs": "^1.16.2",
+    "@types/ssh2": "0.5.39",
+    "@types/ssh2-streams": "^0.1.6",
+    "@types/tar-fs": "^1.16.1",
+    "@types/tar-stream": "^1.6.1",
     "@types/ws": "^6.0.4",
     "@typescript-eslint/eslint-plugin": "^2.0.0",
     "@typescript-eslint/parser": "^2.0.0",
@@ -50,10 +54,12 @@
     "adm-zip": "^0.4.14",
     "fs-extra": "^8.1.0",
     "httpolyglot": "^0.1.2",
+    "node-pty": "^0.9.0",
     "pem": "^1.14.2",
     "safe-compare": "^1.1.4",
     "semver": "^7.1.3",
     "tar": "^6.0.1",
+    "ssh2": "^0.8.7",
     "tar-fs": "^2.0.0",
     "ws": "^7.2.0"
   }

src/browser/pages/home.html

@@ -6,7 +6,10 @@
       name="viewport"
       content="width=device-width, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0, user-scalable=no"
     />
-    <meta http-equiv="Content-Security-Policy" content="style-src 'self' 'unsafe-inline'; manifest-src 'self'; img-src 'self' data:;" />
+    <meta
+      http-equiv="Content-Security-Policy"
+      content="style-src 'self' 'unsafe-inline'; manifest-src 'self'; img-src 'self' data:;"
+    />
     <title>code-server</title>
     <link rel="icon" href="{{BASE}}/static/{{COMMIT}}/src/browser/media/favicon.ico" type="image/x-icon" />
     <link

src/node/cli.ts

@@ -31,6 +31,8 @@ export interface Args extends VsArgs {
   readonly open?: boolean
   readonly port?: number
   readonly socket?: string
+  readonly "ssh-host-key"?: string
+  readonly "disable-ssh"?: boolean
   readonly version?: boolean
   readonly force?: boolean
   readonly "list-extensions"?: boolean
@@ -96,6 +98,9 @@ const options: Options<Required<Args>> = {
   version: { type: "boolean", short: "v", description: "Display version information." },
   _: { type: "string[]" },
 
+  "disable-ssh": { type: "boolean" },
+  "ssh-host-key": { type: "string", path: true },
+
   "user-data-dir": { type: "string", path: true, description: "Path to the user data directory." },
   "extensions-dir": { type: "string", path: true, description: "Path to the extensions directory." },
   "builtin-extensions-dir": { type: "string", path: true },

src/node/entry.ts

@@ -10,7 +10,8 @@ import { UpdateHttpProvider } from "./app/update"
 import { VscodeHttpProvider } from "./app/vscode"
 import { Args, optionDescriptions, parse } from "./cli"
 import { AuthType, HttpServer } from "./http"
-import { generateCertificate, generatePassword, hash, open } from "./util"
+import { SshProvider } from "./ssh/server"
+import { generateCertificate, generatePassword, generateSshHostKey, hash, open } from "./util"
 import { ipcMain, wrap } from "./wrapper"
 
 const main = async (args: Args): Promise<void> => {
@@ -29,6 +30,7 @@ const main = async (args: Args): Promise<void> => {
     auth,
     cert: args.cert ? args.cert.value : undefined,
     certKey: args["cert-key"],
+    sshHostKey: args["ssh-host-key"],
     commit: commit || "development",
     host: args.host || (args.auth === AuthType.Password && typeof args.cert !== "undefined" ? "0.0.0.0" : "localhost"),
     password: originalPassword ? hash(originalPassword) : undefined,
@@ -43,6 +45,13 @@ const main = async (args: Args): Promise<void> => {
   } else if (args.cert && !args["cert-key"]) {
     throw new Error("--cert-key is missing")
   }
+  if (!args["disable-ssh"]) {
+    if (!options.sshHostKey && typeof options.sshHostKey !== "undefined") {
+      throw new Error("--ssh-host-key cannot be blank")
+    } else if (!options.sshHostKey) {
+      options.sshHostKey = await generateSshHostKey()
+    }
+  }
 
   const httpServer = new HttpServer(options)
   const vscode = httpServer.registerHttpProvider("/", VscodeHttpProvider, args)
@@ -55,6 +64,13 @@ const main = async (args: Args): Promise<void> => {
   ipcMain().onDispose(() => httpServer.dispose())
 
   logger.info(`code-server ${require("../../package.json").version}`)
+
+  let sshPort = ""
+  if (!args["disable-ssh"]) {
+    const sshProvider = httpServer.registerHttpProvider("/ssh", SshProvider, options.sshHostKey as string)
+    sshPort = await sshProvider.listen()
+  }
+
   const serverAddress = await httpServer.listen()
   logger.info(`Server listening on ${serverAddress}`)
 
@@ -82,6 +98,12 @@ const main = async (args: Args): Promise<void> => {
 
   logger.info(`  - Automatic updates are ${update.enabled ? "enabled" : "disabled"}`)
 
+  if (sshPort) {
+    logger.info(`  - SSH Server - Listening :${sshPort}`)
+  } else {
+    logger.info("  - SSH Server - Disabled")
+  }
+
   if (serverAddress && !options.socket && args.open) {
     // The web socket doesn't seem to work if browsing with 0.0.0.0.
     const openAddress = serverAddress.replace(/:\/\/0.0.0.0/, "://localhost")

src/node/http.ts

@@ -525,7 +525,7 @@ export class HttpServer {
               "Set-Cookie": [
                 `${payload.cookie.key}=${payload.cookie.value}`,
                 `Path=${normalize(payload.cookie.path || "/", true)}`,
-                "HttpOnly",
+                // "HttpOnly",
                 "SameSite=strict",
               ].join(";"),
             }

src/node/ssh/server.ts

@@ -0,0 +1,110 @@
+import * as http from "http"
+import * as net from "net"
+import * as ssh from "ssh2"
+import * as ws from "ws"
+import * as fs from "fs"
+import { logger } from "@coder/logger"
+import safeCompare from "safe-compare"
+import { HttpProvider, HttpResponse, HttpProviderOptions, Route } from "../http"
+import { HttpCode } from "../../common/http"
+import { forwardSshPort, fillSshSession } from "./ssh"
+import { hash } from "../util"
+
+export class SshProvider extends HttpProvider {
+  private readonly wss = new ws.Server({ noServer: true })
+  private sshServer: ssh.Server
+
+  public constructor(options: HttpProviderOptions, hostKeyPath: string) {
+    super(options)
+    const hostKey = fs.readFileSync(hostKeyPath)
+    this.sshServer = new ssh.Server({ hostKeys: [hostKey] }, this.handleSsh)
+
+    this.sshServer.on("error", (err) => {
+      logger.error(`SSH server error: ${err.stack}`)
+    })
+  }
+
+  public async listen(): Promise<string> {
+    return new Promise((resolve, reject) => {
+      this.sshServer.once("error", reject)
+      this.sshServer.listen(() => {
+        resolve(this.sshServer.address().port.toString())
+      })
+    })
+  }
+
+  public async handleRequest(): Promise<HttpResponse> {
+    // SSH has no HTTP endpoints
+    return { code: HttpCode.NotFound }
+  }
+
+  public handleWebSocket(
+    _route: Route,
+    request: http.IncomingMessage,
+    socket: net.Socket,
+    head: Buffer,
+  ): Promise<void> {
+    // Create a fake websocket to the sshServer
+    const sshSocket = net.connect(this.sshServer.address().port, "localhost")
+
+    return new Promise((resolve) => {
+      this.wss.handleUpgrade(request, socket, head, (ws) => {
+        // Send SSH data to WS as compressed binary
+        sshSocket.on("data", (data) => {
+          ws.send(data, {
+            binary: true,
+            compress: true,
+            fin: true,
+          })
+        })
+
+        // Send WS data to SSH as buffer
+        ws.on("message", (msg) => {
+          // Buffer.from is cool with all types, but casting as string keeps typing simple
+          sshSocket.write(Buffer.from(msg as string))
+        })
+
+        ws.on("error", (err) => {
+          logger.error(`SSH websocket error: ${err.stack}`)
+        })
+
+        resolve()
+      })
+    })
+  }
+
+  /**
+   * Determine how to handle incoming SSH connections.
+   */
+  private handleSsh = (client: ssh.Connection, info: ssh.ClientInfo): void => {
+    logger.debug(`Incoming SSH connection from ${info.ip}`)
+    client.on("authentication", (ctx) => {
+      // Allow any auth to go through if we have no password
+      if (!this.options.password) {
+        return ctx.accept()
+      }
+
+      // Otherwise require the same password as code-server
+      if (ctx.method === "password") {
+        if (
+          safeCompare(this.options.password, hash(ctx.password)) ||
+          safeCompare(this.options.password, ctx.password)
+        ) {
+          return ctx.accept()
+        }
+      }
+
+      // Reject, letting them know that password is the only method we allow
+      ctx.reject(["password"])
+    })
+    client.on("tcpip", forwardSshPort)
+    client.on("session", fillSshSession)
+    client.on("error", (err) => {
+      // Don't bother logging Keepalive errors, they probably just disconnected
+      if (err.message === "Keepalive timeout") {
+        return logger.debug("SSH client keepalive timeout")
+      }
+      logger.error(`SSH client error: ${err.stack}`)
+    })
+  }
+}

src/node/ssh/sftp.ts

@@ -0,0 +1,201 @@
+/**
+ * Provides utilities for handling SSH connections
+ */
+import * as fs from "fs"
+import * as path from "path"
+import * as ssh from "ssh2"
+import { FileEntry, SFTPStream } from "ssh2-streams"
+
+/**
+ * Fills out all the functionality of SFTP using fs.
+ */
+export function fillSftpStream(accept: () => SFTPStream): void {
+  const sftp = accept()
+
+  let oid = 0
+  const fds: { [key: number]: boolean } = {}
+  const ods: {
+    [key: number]: {
+      path: string
+      read: boolean
+    }
+  } = {}
+
+  const sftpStatus = (reqID: number, err?: NodeJS.ErrnoException | null): boolean => {
+    let code = ssh.SFTP_STATUS_CODE.OK
+    if (err) {
+      if (err.code === "EACCES") {
+        code = ssh.SFTP_STATUS_CODE.PERMISSION_DENIED
+      } else if (err.code === "ENOENT") {
+        code = ssh.SFTP_STATUS_CODE.NO_SUCH_FILE
+      } else {
+        code = ssh.SFTP_STATUS_CODE.FAILURE
+      }
+    }
+    return sftp.status(reqID, code)
+  }
+
+  sftp.on("OPEN", (reqID, filename) => {
+    fs.open(filename, "w", (err, fd) => {
+      if (err) {
+        return sftpStatus(reqID, err)
+      }
+      fds[fd] = true
+      const buf = Buffer.alloc(4)
+      buf.writeUInt32BE(fd, 0)
+      return sftp.handle(reqID, buf)
+    })
+  })
+
+  sftp.on("OPENDIR", (reqID, path) => {
+    const buf = Buffer.alloc(4)
+    const id = oid++
+    buf.writeUInt32BE(id, 0)
+    ods[id] = {
+      path,
+      read: false,
+    }
+    sftp.handle(reqID, buf)
+  })
+
+  sftp.on("READDIR", (reqID, handle) => {
+    const od = handle.readUInt32BE(0)
+    if (!ods[od]) {
+      return sftp.status(reqID, ssh.SFTP_STATUS_CODE.NO_SUCH_FILE)
+    }
+    if (ods[od].read) {
+      sftp.status(reqID, ssh.SFTP_STATUS_CODE.EOF)
+      return
+    }
+    return fs.readdir(ods[od].path, (err, files) => {
+      if (err) {
+        return sftpStatus(reqID, err)
+      }
+      return Promise.all(
+        files.map((f) => {
+          return new Promise<FileEntry>((resolve, reject) => {
+            const fullPath = path.join(ods[od].path, f)
+            fs.stat(fullPath, (err, stats) => {
+              if (err) {
+                return reject(err)
+              }
+
+              resolve({
+                filename: f,
+                longname: fullPath,
+                attrs: {
+                  atime: stats.atimeMs,
+                  gid: stats.gid,
+                  mode: stats.mode,
+                  size: stats.size,
+                  mtime: stats.mtimeMs,
+                  uid: stats.uid,
+                },
+              })
+            })
+          })
+        }),
+      )
+        .then((files) => {
+          sftp.name(reqID, files)
+          ods[od].read = true
+        })
+        .catch(() => {
+          sftp.status(reqID, ssh.SFTP_STATUS_CODE.FAILURE)
+        })
+    })
+  })
+
+  sftp.on("WRITE", (reqID, handle, offset, data) => {
+    const fd = handle.readUInt32BE(0)
+    if (!fds[fd]) {
+      return sftp.status(reqID, ssh.SFTP_STATUS_CODE.NO_SUCH_FILE)
+    }
+    return fs.write(fd, data, offset, (err) => sftpStatus(reqID, err))
+  })
+
+  sftp.on("CLOSE", (reqID, handle) => {
+    const fd = handle.readUInt32BE(0)
+    if (!fds[fd]) {
+      if (ods[fd]) {
+        delete ods[fd]
+        return sftp.status(reqID, ssh.SFTP_STATUS_CODE.OK)
+      }
+      return sftp.status(reqID, ssh.SFTP_STATUS_CODE.NO_SUCH_FILE)
+    }
+    return fs.close(fd, (err) => sftpStatus(reqID, err))
+  })
+
+  sftp.on("STAT", (reqID, path) => {
+    fs.stat(path, (err, stats) => {
+      if (err) {
+        return sftpStatus(reqID, err)
+      }
+      return sftp.attrs(reqID, {
+        atime: stats.atime.getTime(),
+        gid: stats.gid,
+        mode: stats.mode,
+        mtime: stats.mtime.getTime(),
+        size: stats.size,
+        uid: stats.uid,
+      })
+    })
+  })
+
+  sftp.on("MKDIR", (reqID, path) => {
+    fs.mkdir(path, (err) => sftpStatus(reqID, err))
+  })
+
+  sftp.on("LSTAT", (reqID, path) => {
+    fs.lstat(path, (err, stats) => {
+      if (err) {
+        return sftpStatus(reqID, err)
+      }
+      return sftp.attrs(reqID, {
+        atime: stats.atimeMs,
+        gid: stats.gid,
+        mode: stats.mode,
+        mtime: stats.mtimeMs,
+        size: stats.size,
+        uid: stats.uid,
+      })
+    })
+  })
+
+  sftp.on("REMOVE", (reqID, path) => {
+    fs.unlink(path, (err) => sftpStatus(reqID, err))
+  })
+
+  sftp.on("RMDIR", (reqID, path) => {
+    fs.rmdir(path, (err) => sftpStatus(reqID, err))
+  })
+
+  sftp.on("REALPATH", (reqID, path) => {
+    fs.realpath(path, (pathErr, resolved) => {
+      if (pathErr) {
+        return sftpStatus(reqID, pathErr)
+      }
+      fs.stat(path, (statErr, stat) => {
+        if (statErr) {
+          return sftpStatus(reqID, statErr)
+        }
+        sftp.name(reqID, [
+          {
+            filename: resolved,
+            longname: resolved,
+            attrs: {
+              mode: stat.mode,
+              uid: stat.uid,
+              gid: stat.gid,
+              size: stat.size,
+              atime: stat.atime.getTime(),
+              mtime: stat.mtime.getTime(),
+            },
+          },
+        ])
+        return
+      })
+      return
+    })
+  })
+}

src/node/ssh/ssh.ts

@@ -0,0 +1,122 @@
+/**
+ * Provides utilities for handling SSH connections
+ */
+import * as net from "net"
+import * as cp from "child_process"
+import * as ssh from "ssh2"
+import * as nodePty from "node-pty"
+import { fillSftpStream } from "./sftp"
+
+/**
+ * Fills out all of the functionality of SSH using node equivalents.
+ */
+export function fillSshSession(accept: () => ssh.Session): void {
+  let pty: nodePty.IPty | undefined
+  let activeProcess: cp.ChildProcess
+  let ptyInfo: ssh.PseudoTtyInfo | undefined
+  const env: { [key: string]: string } = {}
+
+  const session = accept()
+
+  // Run a command, stream back the data
+  const cmd = (command: string, channel: ssh.ServerChannel): void => {
+    if (ptyInfo) {
+      // Remove undefined and project env vars
+      // keysToRemove taken from sanitizeProcessEnvironment
+      const keysToRemove = [/^ELECTRON_.+$/, /^GOOGLE_API_KEY$/, /^VSCODE_.+$/, /^SNAP(|_.*)$/]
+      const env = Object.keys(process.env).reduce((prev, k) => {
+        if (process.env[k] === undefined) {
+          return prev
+        }
+        const val = process.env[k] as string
+        if (keysToRemove.find((rx) => val.search(rx))) {
+          return prev
+        }
+        prev[k] = val
+        return prev
+      }, {} as { [key: string]: string })
+
+      pty = nodePty.spawn(command, [], {
+        cols: ptyInfo.cols,
+        rows: ptyInfo.rows,
+        env,
+      })
+      pty.onData((d) => channel.write(d))
+      pty.on("exit", (exitCode) => {
+        channel.exit(exitCode)
+        channel.close()
+      })
+      channel.on("data", (d: string) => pty && pty.write(d))
+      return
+    }
+
+    const proc = cp.spawn(command, { shell: true })
+    proc.stdout.on("data", (d) => channel.stdout.write(d))
+    proc.stderr.on("data", (d) => channel.stderr.write(d))
+    proc.on("exit", (exitCode) => {
+      channel.exit(exitCode || 0)
+      channel.close()
+    })
+    channel.stdin.on("data", (d: unknown) => proc.stdin.write(d))
+    channel.stdin.on("close", () => proc.stdin.end())
+  }
+
+  session.on("pty", (accept, _, info) => {
+    ptyInfo = info
+    accept && accept()
+  })
+
+  session.on("shell", (accept) => {
+    cmd(process.env.SHELL || "/usr/bin/env bash", accept())
+  })
+
+  session.on("exec", (accept, _, info) => {
+    cmd(info.command, accept())
+  })
+
+  session.on("sftp", fillSftpStream)
+
+  session.on("signal", (accept, _, info) => {
+    accept && accept()
+    process.kill((pty || activeProcess).pid, info.name)
+  })
+
+  session.on("env", (accept, _reject, info) => {
+    accept && accept()
+    env[info.key] = info.value
+  })
+
+  session.on("auth-agent", (accept) => {
+    accept()
+  })
+
+  session.on("window-change", (accept, reject, info) => {
+    if (pty) {
+      pty.resize(info.cols, info.rows)
+      accept && accept()
+    } else {
+      reject()
+    }
+  })
+}
+
+/**
+ * Pipes a requested port over SSH
+ */
+export function forwardSshPort(
+  accept: () => ssh.ServerChannel,
+  reject: () => boolean,
+  info: ssh.TcpipRequestInfo,
+): void {
+  const fwdSocket = net.createConnection(info.destPort, info.destIP)
+  fwdSocket.on("error", () => reject())
+  fwdSocket.on("connect", () => {
+    const channel = accept()
+    channel.pipe(fwdSocket)
+    channel.on("close", () => fwdSocket.end())
+    fwdSocket.pipe(channel)
+    fwdSocket.on("close", () => channel.close())
+    fwdSocket.on("error", () => channel.end())
+    fwdSocket.on("end", () => channel.end())
+  })
+}

src/node/util.ts

@@ -44,6 +44,12 @@ export const generateCertificate = async (): Promise<{ cert: string; certKey: st
   return paths
 }
 
+export const generateSshHostKey = async (): Promise<string> => {
+  // Just reuse the SSL cert as the SSH host key
+  const { certKey } = await generateCertificate()
+  return certKey
+}
+
 export const generatePassword = async (length = 24): Promise<string> => {
   const buffer = Buffer.alloc(Math.ceil(length / 2))
   await util.promisify(crypto.randomFill)(buffer)

yarn.lock

@@ -937,7 +937,22 @@
   dependencies:
     "@types/node" "*"
 
-"@types/tar-fs@^1.16.2":
+"@types/ssh2-streams@*", "@types/ssh2-streams@^0.1.6":
+  version "0.1.6"
+  resolved "https://registry.yarnpkg.com/@types/ssh2-streams/-/ssh2-streams-0.1.6.tgz#1ff5b1fe50c15f282efe9fd092c68494f8702bc2"
+  integrity sha512-NB+SYftagfHTDPdgVyvSZCeg5MURyHECd/PycGIW9hwhnEbTFxIdDbFtf3jxUO3rRnfr0lfdtkZFiv28T1cAsg==
+  dependencies:
+    "@types/node" "*"
+
+"@types/ssh2@0.5.39":
+  version "0.5.39"
+  resolved "https://registry.yarnpkg.com/@types/ssh2/-/ssh2-0.5.39.tgz#e39ab7e38fc01337f66237ed6c42237ef3e58e3b"
+  integrity sha512-MtX4tr6Jtdn/JPVsQytjB/NBeOd7JfCyf/l79KOdkUYL+r4GXUXcySX1n8W4O61fnQdljTBXEPJJ2dhnGhi2xg==
+  dependencies:
+    "@types/node" "*"
+    "@types/ssh2-streams" "*"
+
+"@types/tar-fs@^1.16.1":
   version "1.16.2"
   resolved "https://registry.yarnpkg.com/@types/tar-fs/-/tar-fs-1.16.2.tgz#6f5acea15d3b7777b8bf3f1c6d4e80ce71288f34"
   integrity sha512-eds/pbRf0Fe0EKmrHDbs8mRkfbjz2upAdoUfREw14dPboZaHqqZ1Y+uVeoakoPavpZMpj22nhUTAYkX5bz3DXA==
@@ -945,7 +960,7 @@
     "@types/node" "*"
     "@types/tar-stream" "*"
 
-"@types/tar-stream@*":
+"@types/tar-stream@*", "@types/tar-stream@^1.6.1":
   version "1.6.1"
   resolved "https://registry.yarnpkg.com/@types/tar-stream/-/tar-stream-1.6.1.tgz#67d759068ff781d976cad978893bb7a334ec8809"
   integrity sha512-pYCDOPuRE+4tXFk1rSMYiuI+kSrXiJ4av1bboQbkcEBA2rqwEWfIn9kdMSH+5nYu58WksHuxwx+7kVbtg0Le7w==
@@ -1221,7 +1236,7 @@ asn1.js@^4.0.0:
     inherits "^2.0.1"
     minimalistic-assert "^1.0.0"
 
-asn1@~0.2.3:
+asn1@~0.2.0, asn1@~0.2.3:
   version "0.2.4"
   resolved "https://registry.yarnpkg.com/asn1/-/asn1-0.2.4.tgz#8d2475dfab553bb33e77b54e59e880bb8ce23136"
   integrity sha512-jxwzQpLQjSmWXgwaCZE9Nz+glAG01yF1QnWgbhGwHI5A6FRIEY6IVqtHhIepHqI7/kyEyQEagBC5mBEFlIYvdg==
@@ -1356,7 +1371,7 @@ base@^0.11.1:
     mixin-deep "^1.2.0"
     pascalcase "^0.1.1"
 
-bcrypt-pbkdf@^1.0.0:
+bcrypt-pbkdf@^1.0.0, bcrypt-pbkdf@^1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/bcrypt-pbkdf/-/bcrypt-pbkdf-1.0.2.tgz#a4301d389b6a43f9b67ff3ca11a3f6637e360e9e"
   integrity sha1-pDAdOJtqQ/m2f/PKEaP2Y342Dp4=
@@ -4404,7 +4419,7 @@ mute-stream@0.0.8:
   resolved "https://registry.yarnpkg.com/mute-stream/-/mute-stream-0.0.8.tgz#1630c42b2251ff81e2a283de96a5497ea92e5e0d"
   integrity sha512-nnbWWOkoWyUsTjKrhgD0dcz22mdkSnpYqbEjIm2nhwhuxlSkpywJmBo8h0ZqJdkp73mb90SssHkN4rsRaBAfAA==
 
-nan@^2.12.1:
+nan@^2.12.1, nan@^2.14.0:
   version "2.14.0"
   resolved "https://registry.yarnpkg.com/nan/-/nan-2.14.0.tgz#7818f722027b2459a86f0295d434d1fc2336c52c"
   integrity sha512-INOFj37C7k3AfaNTtX8RhsTw7qRy7eLET14cROi9+5HAVbbHuIWUHEauBv5qT4Av2tWasiTY1Jw6puUNqRJXQg==
@@ -4483,6 +4498,13 @@ node-libs-browser@^2.0.0:
     util "^0.11.0"
     vm-browserify "^1.0.1"
 
+node-pty@^0.9.0:
+  version "0.9.0"
+  resolved "https://registry.yarnpkg.com/node-pty/-/node-pty-0.9.0.tgz#8f9bcc0d1c5b970a3184ffd533d862c7eb6590a6"
+  integrity sha512-MBnCQl83FTYOu7B4xWw10AW77AAh7ThCE1VXEv+JeWj8mSpGo+0bwgsV+b23ljBFwEM9OmsOv3kM27iUPPm84g==
+  dependencies:
+    nan "^2.14.0"
+
 node-releases@^1.1.49:
   version "1.1.49"
   resolved "https://registry.yarnpkg.com/node-releases/-/node-releases-1.1.49.tgz#67ba5a3fac2319262675ef864ed56798bb33b93e"
@@ -6249,6 +6271,22 @@ sprintf-js@~1.0.2:
   resolved "https://registry.yarnpkg.com/sprintf-js/-/sprintf-js-1.0.3.tgz#04e6926f662895354f3dd015203633b857297e2c"
   integrity sha1-BOaSb2YolTVPPdAVIDYzuFcpfiw=
 
+ssh2-streams@~0.4.9:
+  version "0.4.9"
+  resolved "https://registry.yarnpkg.com/ssh2-streams/-/ssh2-streams-0.4.9.tgz#d3d92155410001437d27119d9c023b303cbe2309"
+  integrity sha512-glMQKeYKuA+rLaH16fJC3nZMV1BWklbxuYCR4C5/LlBSf2yaoNRpPU7Ul702xsi5nvYjIx9XDkKBJwrBjkDynw==
+  dependencies:
+    asn1 "~0.2.0"
+    bcrypt-pbkdf "^1.0.2"
+    streamsearch "~0.1.2"
+
+ssh2@^0.8.7:
+  version "0.8.8"
+  resolved "https://registry.yarnpkg.com/ssh2/-/ssh2-0.8.8.tgz#1d9815e287faef623ae2b7db32e674dadbef4664"
+  integrity sha512-egJVQkf3sbjECTY6rCeg8rgV/fab6S/7E5kpYqHT3Fe/YpfJbLYeA1qTcB2d+LRUUAjqKi7rlbfWkaP66YdpAQ==
+  dependencies:
+    ssh2-streams "~0.4.9"
+
 sshpk@^1.7.0:
   version "1.16.1"
   resolved "https://registry.yarnpkg.com/sshpk/-/sshpk-1.16.1.tgz#fb661c0bef29b39db40769ee39fa70093d6f6877"
@@ -6338,6 +6376,11 @@ stream-http@^2.7.2:
     to-arraybuffer "^1.0.0"
     xtend "^4.0.0"
 
+streamsearch@~0.1.2:
+  version "0.1.2"
+  resolved "https://registry.yarnpkg.com/streamsearch/-/streamsearch-0.1.2.tgz#808b9d0e56fc273d809ba57338e929919a1a9f1a"
+  integrity sha1-gIudDlb8Jz2Am6VzOOkpkZoanxo=
+
 "string-width@^1.0.2 || 2":
   version "2.1.1"
   resolved "https://registry.yarnpkg.com/string-width/-/string-width-2.1.1.tgz#ab93f27a8dc13d28cac815c462143a6d9012ae9e"