Function createSSHSession

src/ssh/createSSHSession.ts:35–253

(
  config: {
    host: string
    cwd?: string
    localVersion: string
    permissionMode?: string
    dangerouslySkipPermissions?: boolean
    extraCliArgs: string[]
    remoteBin?: string
  },
  callbacks?: {
    onProgress?: (msg: string) => void
  },
)

}

export async function createSSHSession(
  config: {
    host: string
    cwd?: string
    localVersion: string
    permissionMode?: string
    dangerouslySkipPermissions?: boolean
    extraCliArgs: string[]
    remoteBin?: string
  },
  callbacks?: {
    onProgress?: (msg: string) => void
  },
): Promise<SSHSession> {
  const { host, localVersion, extraCliArgs, remoteBin } = config
  const onProgress = callbacks?.onProgress

  let remoteBinaryPath: string
  let defaultCwd = '/'

  if (remoteBin) {
    onProgress?.('Using custom remote binary, skipping probe/deploy…')
    remoteBinaryPath = remoteBin
    logForDebugging(`[SSH] custom remoteBin: ${remoteBin}`)
    // Quick SSH to get remote home directory for default CWD
    try {
      const pwdProc = Bun.spawn(
        ['ssh', '-o', 'BatchMode=yes', '-o', 'ConnectTimeout=5', host, 'pwd'],
        {
          stdin: 'ignore',
          stdout: 'pipe',
          stderr: 'ignore',
        },
      )
      await pwdProc.exited
      const pwd = (await new Response(pwdProc.stdout).text()).trim()
      if (pwd.startsWith('/')) defaultCwd = pwd
    } catch {
      /* use fallback */
    }
  } else {
    // 1. Probe remote host
    const probe = await probeRemote(host, onProgress)
    logForDebugging(`[SSH] probe result: ${JSON.stringify(probe)}`)
    defaultCwd = probe.defaultCwd

    // 2. Deploy if binary missing or version mismatch
    remoteBinaryPath = probe.binaryPath ?? '~/.local/bin/claude'
    if (!probe.hasBinary || probe.remoteVersion !== localVersion) {
      onProgress?.(
        probe.hasBinary
          ? `Updating remote binary (${probe.remoteVersion} → ${localVersion})…`
          : 'Deploying binary to remote…',
      )
      remoteBinaryPath = await deployBinary({
        host,
        remotePlatform: probe.remotePlatform,
        remoteArch: probe.remoteArch,