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-rw-r--r--doc/guix.texi16
-rw-r--r--gnu/services/ssh.scm81
2 files changed, 62 insertions, 35 deletions
diff --git a/doc/guix.texi b/doc/guix.texi
index 297141288c..8d27dd2031 100644
--- a/doc/guix.texi
+++ b/doc/guix.texi
@@ -9511,6 +9511,22 @@ equivalent role to password authentication, you should disable either
@item @code{print-last-log?} (default: @code{#t})
Specifies whether @command{sshd} should print the date and time of the
last user login when a user logs in interactively.
+
+@item @code{subsystems} (default: @code{'(("sftp" "internal-sftp"))})
+Configures external subsystems (e.g. file transfer daemon).
+
+This is a list of two-element lists, each of which containing the
+subsystem name and a command (with optional arguments) to execute upon
+subsystem request.
+
+The command @command{internal-sftp} implements an in-process SFTP
+server. Alternately, one can specify the @command{sftp-server} command:
+@example
+(service openssh-service-type
+ (openssh-configuration
+ (subsystems
+ '(("sftp" ,(file-append openssh "/libexec/sftp-server"))))))
+@end example
@end table
@end deftp
diff --git a/gnu/services/ssh.scm b/gnu/services/ssh.scm
index 6272d53fc8..b7f9887b30 100644
--- a/gnu/services/ssh.scm
+++ b/gnu/services/ssh.scm
@@ -292,7 +292,10 @@ The other options should be self-descriptive."
(default #t))
;; Boolean
(print-last-log? openssh-configuration-print-last-log?
- (default #t)))
+ (default #t))
+ ;; list of two-element lists
+ (subsystems openssh-configuration-subsystems
+ (default '(("sftp" "internal-sftp")))))
(define %openssh-accounts
(list (user-group (name "sshd") (system? #t))
@@ -327,40 +330,48 @@ The other options should be self-descriptive."
"Return the sshd configuration file corresponding to CONFIG."
(computed-file
"sshd_config"
- #~(call-with-output-file #$output
- (lambda (port)
- (display "# Generated by 'openssh-service'.\n" port)
- (format port "Port ~a\n"
- #$(number->string (openssh-configuration-port-number config)))
- (format port "PermitRootLogin ~a\n"
- #$(match (openssh-configuration-permit-root-login config)
- (#t "yes")
- (#f "no")
- ('without-password "without-password")))
- (format port "PermitEmptyPasswords ~a\n"
- #$(if (openssh-configuration-allow-empty-passwords? config)
- "yes" "no"))
- (format port "PasswordAuthentication ~a\n"
- #$(if (openssh-configuration-password-authentication? config)
- "yes" "no"))
- (format port "PubkeyAuthentication ~a\n"
- #$(if (openssh-configuration-public-key-authentication? config)
- "yes" "no"))
- (format port "X11Forwarding ~a\n"
- #$(if (openssh-configuration-x11-forwarding? config)
- "yes" "no"))
- (format port "PidFile ~a\n"
- #$(openssh-configuration-pid-file config))
- (format port "ChallengeResponseAuthentication ~a\n"
- #$(if (openssh-challenge-response-authentication? config)
- "yes" "no"))
- (format port "UsePAM ~a\n"
- #$(if (openssh-configuration-use-pam? config)
- "yes" "no"))
- (format port "PrintLastLog ~a\n"
- #$(if (openssh-configuration-print-last-log? config)
- "yes" "no"))
- #t))))
+ #~(begin
+ (use-modules (ice-9 match))
+ (call-with-output-file #$output
+ (lambda (port)
+ (display "# Generated by 'openssh-service'.\n" port)
+ (format port "Port ~a\n"
+ #$(number->string
+ (openssh-configuration-port-number config)))
+ (format port "PermitRootLogin ~a\n"
+ #$(match (openssh-configuration-permit-root-login config)
+ (#t "yes")
+ (#f "no")
+ ('without-password "without-password")))
+ (format port "PermitEmptyPasswords ~a\n"
+ #$(if (openssh-configuration-allow-empty-passwords? config)
+ "yes" "no"))
+ (format port "PasswordAuthentication ~a\n"
+ #$(if (openssh-configuration-password-authentication? config)
+ "yes" "no"))
+ (format port "PubkeyAuthentication ~a\n"
+ #$(if (openssh-configuration-public-key-authentication?
+ config)
+ "yes" "no"))
+ (format port "X11Forwarding ~a\n"
+ #$(if (openssh-configuration-x11-forwarding? config)
+ "yes" "no"))
+ (format port "PidFile ~a\n"
+ #$(openssh-configuration-pid-file config))
+ (format port "ChallengeResponseAuthentication ~a\n"
+ #$(if (openssh-challenge-response-authentication? config)
+ "yes" "no"))
+ (format port "UsePAM ~a\n"
+ #$(if (openssh-configuration-use-pam? config)
+ "yes" "no"))
+ (format port "PrintLastLog ~a\n"
+ #$(if (openssh-configuration-print-last-log? config)
+ "yes" "no"))
+ (for-each
+ (match-lambda
+ ((name command) (format port "Subsystem\t~a\t~a\n" name command)))
+ '#$(openssh-configuration-subsystems config))
+ #t)))))
(define (openssh-shepherd-service config)
"Return a <shepherd-service> for openssh with CONFIG."