diff options
Diffstat (limited to 'guix/ssh.scm')
| -rw-r--r-- | guix/ssh.scm | 51 |
1 files changed, 48 insertions, 3 deletions
diff --git a/guix/ssh.scm b/guix/ssh.scm index 3548243839..e02c8ebc32 100644 --- a/guix/ssh.scm +++ b/guix/ssh.scm @@ -1,5 +1,5 @@ ;;; GNU Guix --- Functional package management for GNU -;;; Copyright © 2016 Ludovic Courtès <ludo@gnu.org> +;;; Copyright © 2016, 2017 Ludovic Courtès <ludo@gnu.org> ;;; ;;; This file is part of GNU Guix. ;;; @@ -18,7 +18,10 @@ (define-module (guix ssh) #:use-module (guix store) - #:autoload (guix ui) (N_) + #:use-module ((guix ui) #:select (_ N_)) + #:use-module (ssh session) + #:use-module (ssh auth) + #:use-module (ssh key) #:use-module (ssh channel) #:use-module (ssh popen) #:use-module (ssh session) @@ -29,7 +32,8 @@ #:use-module (srfi srfi-35) #:use-module (ice-9 match) #:use-module (ice-9 binary-ports) - #:export (connect-to-remote-daemon + #:export (open-ssh-session + connect-to-remote-daemon send-files retrieve-files remote-store-host @@ -43,6 +47,47 @@ ;;; ;;; Code: +(define %compression + "zlib@openssh.com,zlib") + +(define* (open-ssh-session host #:key user port + (compression %compression)) + "Open an SSH session for HOST and return it. When USER and PORT are #f, use +default values or whatever '~/.ssh/config' specifies; otherwise use them. +Throw an error on failure." + (let ((session (make-session #:user user + #:host host + #:port port + #:timeout 10 ;seconds + ;; #:log-verbosity 'protocol + + ;; We need lightweight compression when + ;; exchanging full archives. + #:compression compression + #:compression-level 3))) + + ;; Honor ~/.ssh/config. + (session-parse-config! session) + + (match (connect! session) + ('ok + ;; Use public key authentication, via the SSH agent if it's available. + (match (userauth-public-key/auto! session) + ('success + session) + (x + (disconnect! session) + (raise (condition + (&message + (message (format #f (_ "SSH authentication failed for '~a': ~a~%") + host (get-error session))))))))) + (x + ;; Connection failed or timeout expired. + (raise (condition + (&message + (message (format #f (_ "SSH connection to '~a' failed: ~a~%") + host (get-error session)))))))))) + (define* (connect-to-remote-daemon session #:optional (socket-name "/var/guix/daemon-socket/socket")) |