summaryrefslogtreecommitdiff
path: root/gnu/packages/ssh.scm
blob: abbc0dad894e206a2ea8ad02e1d8cff30215a6d7 (about) (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
;;; GNU Guix --- Functional package management for GNU
;;; Copyright © 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019 Ludovic Courtès <ludo@gnu.org>
;;; Copyright © 2013, 2014 Andreas Enge <andreas@enge.fr>
;;; Copyright © 2014, 2015, 2016 Mark H Weaver <mhw@netris.org>
;;; Copyright © 2015, 2016, 2018 Efraim Flashner <efraim@flashner.co.il>
;;; Copyright © 2016, 2019 Leo Famulari <leo@famulari.name>
;;; Copyright © 2016 Nicolas Goaziou <mail@nicolasgoaziou.fr>
;;; Copyright © 2016 Christopher Allan Webber <cwebber@dustycloud.org>
;;; Copyright © 2017, 2018, 2019 Tobias Geerinckx-Rice <me@tobias.gr>
;;; Copyright © 2017 Stefan Reichör <stefan@xsteve.at>
;;; Copyright © 2017 Ricardo Wurmus <rekado@elephly.net>
;;; Copyright © 2017 ng0 <ng0@n0.is>
;;; Copyright © 2018 Manuel Graf <graf@init.at>
;;; Copyright © 2019 Gábor Boskovits <boskovits@gmail.com>
;;;
;;; This file is part of GNU Guix.
;;;
;;; GNU Guix is free software; you can redistribute it and/or modify it
;;; under the terms of the GNU General Public License as published by
;;; the Free Software Foundation; either version 3 of the License, or (at
;;; your option) any later version.
;;;
;;; GNU Guix is distributed in the hope that it will be useful, but
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;;; GNU General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with GNU Guix.  If not, see <http://www.gnu.org/licenses/>.

(define-module (gnu packages ssh)
  #:use-module (gnu packages)
  #:use-module (gnu packages autotools)
  #:use-module (gnu packages base)
  #:autoload   (gnu packages boost) (boost)
  #:use-module (gnu packages compression)
  #:use-module (gnu packages crypto)
  #:use-module (gnu packages elf)
  #:use-module (gnu packages gnupg)
  #:use-module (gnu packages gperf)
  #:use-module (gnu packages groff)
  #:use-module (gnu packages guile)
  #:use-module (gnu packages libedit)
  #:use-module (gnu packages linux)
  #:use-module (gnu packages logging)
  #:use-module (gnu packages m4)
  #:use-module (gnu packages multiprecision)
  #:use-module (gnu packages ncurses)
  #:use-module (gnu packages nettle)
  #:use-module (gnu packages kerberos)
  #:use-module (gnu packages perl)
  #:use-module (gnu packages pkg-config)
  #:use-module (gnu packages popt)
  #:autoload   (gnu packages protobuf) (protobuf)
  #:use-module (gnu packages python)
  #:use-module (gnu packages python-xyz)
  #:use-module (gnu packages readline)
  #:use-module (gnu packages texinfo)
  #:use-module (gnu packages tls)
  #:use-module (gnu packages xorg)
  #:use-module (guix build-system cmake)
  #:use-module (guix build-system gnu)
  #:use-module (guix build-system python)
  #:use-module (guix download)
  #:use-module (guix git-download)
  #:use-module ((guix licenses) #:prefix license:)
  #:use-module (guix packages)
  #:use-module (srfi srfi-1))

(define-public libssh
  (package
    (name "libssh")
    (version "0.8.7")
    (source (origin
              (method git-fetch)
              (uri (git-reference
                     (url "https://git.libssh.org/projects/libssh.git")
                     (commit (string-append "libssh-" version))))
              (sha256
               (base32
                "1iqik1ba0g008k1mb1n85iih1azi7giy0c485jnlmsrjxik4q3j2"))
              (file-name (git-file-name name version))))
    (build-system cmake-build-system)
    (outputs '("out" "debug"))
    (arguments
     '(#:configure-flags '("-DWITH_GCRYPT=ON")

       #:phases (modify-phases %standard-phases
                  (add-before 'configure 'avoid-werror
                    (lambda _
                      ;; Avoid '-Werror'.  Presumably this works fine with
                      ;; gcc@8 on x86_64 but leads to errors with our older
                      ;; compiler.
                      (substitute* "CompilerChecks.cmake"
                        (("-Werror=") "-W"))
                      #t)))

       ;; TODO: Add 'CMockery' and '-DWITH_TESTING=ON' for the test suite.
       #:tests? #f))
    (inputs `(("zlib" ,zlib)
              ("libgcrypt" ,libgcrypt)))
    (synopsis "SSH client library")
    (description
     "libssh is a C library implementing the SSHv2 and SSHv1 protocol for client
and server implementations.  With libssh, you can remotely execute programs,
transfer files, and use a secure and transparent tunnel for your remote
applications.")
    (home-page "https://www.libssh.org")
    (license license:lgpl2.1+)))

(define-public libssh2
  (package
   (name "libssh2")
   (version "1.8.2")
   (source (origin
            (method url-fetch)
            (uri (string-append
                   "https://www.libssh2.org/download/libssh2-"
                   version ".tar.gz"))
            (sha256
             (base32
              "0rqd37pc80nm2pz4sa2m9pfc48axys7jwq1l7z0vii5nyvchg0q8"))
            (patches
             (search-patches "libssh2-fix-build-failure-with-gcrypt.patch"))))
   (build-system gnu-build-system)
   ;; The installed libssh2.pc file does not include paths to libgcrypt and
   ;; zlib libraries, so we need to propagate the inputs.
   (propagated-inputs `(("libgcrypt" ,libgcrypt)
                        ("zlib" ,zlib)))
   (arguments `(#:configure-flags `("--with-libgcrypt")
                #:phases (modify-phases %standard-phases
                           (replace 'bootstrap
                             (lambda _
                               (invoke "autoreconf" "-v"))))))
   (native-inputs `(("autoconf" ,autoconf)
                    ("automake" ,automake)))
   (synopsis "Client-side C library implementing the SSH2 protocol")
   (description
    "libssh2 is a library intended to allow software developers access to
the SSH-2 protocol in an easy-to-use self-contained package.  It can be built
into an application to perform many different tasks when communicating with
a server that supports the SSH-2 protocol.")
   (license license:bsd-3)
   (home-page "https://www.libssh2.org/")))

(define-public openssh
  (package
   (name "openssh")
   (version "7.9p1")
   (source (origin
             (method url-fetch)
             (uri (string-append "mirror://openbsd/OpenSSH/portable/"
                                 name "-" version ".tar.gz"))
             (patches (search-patches "openssh-CVE-2018-20685.patch"))
             (sha256
              (base32
               "1b8sy6v0b8v4ggmknwcqx3y1rjcpsll0f1f8f4vyv11x4ni3njvb"))))
   (build-system gnu-build-system)
   (native-inputs `(("groff" ,groff)
                    ("pkg-config" ,pkg-config)))
   (inputs `(("libedit" ,libedit)
             ("openssl" ,openssl)
             ("pam" ,linux-pam)
             ("mit-krb5" ,mit-krb5)
             ("zlib" ,zlib)
             ("xauth" ,xauth)))                   ;for 'ssh -X' and 'ssh -Y'
   (arguments
    `(#:test-target "tests"
      ;; Otherwise, the test scripts try to use a nonexistent directory and
      ;; fail.
      #:make-flags '("REGRESSTMP=\"$${BUILDDIR}/regress\"")
      #:configure-flags  `("--sysconfdir=/etc/ssh"

                           ;; Default value of 'PATH' used by sshd.
                          "--with-default-path=/run/current-system/profile/bin"

                          ;; configure needs to find krb5-config
                          ,(string-append "--with-kerberos5="
                                          (assoc-ref %build-inputs "mit-krb5")
                                          "/bin")

                          ;; libedit needed for sftp completion
                          "--with-libedit"

                          ;; Enable PAM support in sshd.
                          "--with-pam")

      #:phases
      (modify-phases %standard-phases
        (add-after 'configure 'reset-/var/empty
         (lambda* (#:key outputs #:allow-other-keys)
           (let ((out (assoc-ref outputs "out")))
             (substitute* "Makefile"
               (("PRIVSEP_PATH=/var/empty")
                (string-append "PRIVSEP_PATH=" out "/var/empty")))
             #t)))
        (add-before 'check 'patch-tests
         (lambda _
           ;; remove 't-exec' regress target which requires user 'sshd'
           (substitute* "regress/Makefile"
             (("^(REGRESS_TARGETS=.*) t-exec(.*)" all pre post)
              (string-append pre post)))
           #t))
        (replace 'install
         (lambda* (#:key outputs (make-flags '()) #:allow-other-keys)
           ;; install without host keys and system configuration files
           (apply invoke "make" "install-nosysconf" make-flags)
           (install-file "contrib/ssh-copy-id"
                         (string-append (assoc-ref outputs "out")
                                        "/bin/"))
           (chmod (string-append (assoc-ref outputs "out")
                                 "/bin/ssh-copy-id") #o555)
           (install-file "contrib/ssh-copy-id.1"
                         (string-append (assoc-ref outputs "out")
                                        "/share/man/man1/"))
           #t)))))
   (synopsis "Client and server for the secure shell (ssh) protocol")
   (description
    "The SSH2 protocol implemented in OpenSSH is standardised by the
IETF secsh working group and is specified in several RFCs and drafts.
It is composed of three layered components:

The transport layer provides algorithm negotiation and a key exchange.
The key exchange includes server authentication and results in a
cryptographically secured connection: it provides integrity, confidentiality
and optional compression.

The user authentication layer uses the established connection and relies on
the services provided by the transport layer.  It provides several mechanisms
for user authentication.  These include traditional password authentication
as well as public-key or host-based authentication mechanisms.

The connection layer multiplexes many different concurrent channels over the
authenticated connection and allows tunneling of login sessions and
TCP-forwarding.  It provides a flow control service for these channels.
Additionally, various channel-specific options can be negotiated.")
   (license (license:non-copyleft "file://LICENSE"
                               "See LICENSE in the distribution."))
   (home-page "https://www.openssh.com/")))

(define-public guile-ssh
  (package
    (name "guile-ssh")
    (version "0.11.3")
    (home-page "https://github.com/artyom-poptsov/guile-ssh")
    (source (origin
              (method git-fetch)
              (uri (git-reference
                    (url home-page)
                    (commit (string-append "v" version))))
              (file-name (string-append name "-" version ".tar.gz"))
              (sha256
               (base32
                "03bv3hwp2s8f0bqgfjaan9jx4dyab0abv27n2zn2g0izlidv0vl6"))
              (modules '((guix build utils)))
              (snippet
               '(begin
                  ;; libssh >= 0.8.0 no longer provides libssh_threads: see
                  ;; <https://github.com/artyom-poptsov/guile-ssh/issues/9>.
                  (substitute* "libguile-ssh/Makefile.am"
                    (("-lssh_threads") ""))

                  ;; This test would wrongfully pick DSS keys when running on
                  ;; libssh >= 0.8.0, which fails:
                  ;; <https://github.com/artyom-poptsov/guile-ssh/issues/10>.
                  (substitute* "tests/server.scm"
                    (("= %libssh-minor-version 7")
                     ">= %libssh-minor-version 7"))
                  #t))))
    (build-system gnu-build-system)
    (outputs '("out" "debug"))
    (arguments
     '(;; It makes no sense to build libguile-ssh.a.
       #:configure-flags '("--disable-static")

       #:phases (modify-phases %standard-phases
                  (add-after 'unpack 'autoreconf
                    (lambda* (#:key inputs #:allow-other-keys)
                      (invoke "autoreconf" "-vfi")))
                  (add-before 'build 'fix-libguile-ssh-file-name
                    (lambda* (#:key outputs #:allow-other-keys)
                      ;; Build and install libguile-ssh.so so that we can use
                      ;; its absolute file name in .scm files, before we build
                      ;; the .go files.
                      (let* ((out (assoc-ref outputs "out"))
                             (lib (string-append out "/lib")))
                        (invoke "make" "install"
                                "-C" "libguile-ssh"
                                "-j" (number->string
                                      (parallel-job-count)))
                        (substitute* (find-files "." "\\.scm$")
                          (("\"libguile-ssh\"")
                           (string-append "\"" lib "/libguile-ssh\"")))
                        #t)))
                  (add-after 'install 'remove-bin-directory
                    (lambda* (#:key outputs #:allow-other-keys)
                      (let* ((out (assoc-ref outputs "out"))
                             (bin (string-append out "/bin"))
                             (examples (string-append
                                        out "/share/guile-ssh/examples")))
                        (mkdir-p examples)
                        (rename-file (string-append bin "/ssshd.scm")
                                     (string-append examples "/ssshd.scm"))
                        (rename-file (string-append bin "/sssh.scm")
                                     (string-append examples "/sssh.scm"))
                        (delete-file-recursively bin)
                        #t))))
       ;; Tests are not parallel-safe.
       #:parallel-tests? #f))
    (native-inputs `(("autoconf" ,autoconf)
                     ("automake" ,automake)
                     ("libtool" ,libtool)
                     ("texinfo" ,texinfo)
                     ("pkg-config" ,pkg-config)
                     ("which" ,which)))
    (inputs `(("guile" ,guile-2.2)
              ("libssh" ,libssh)
              ("libgcrypt" ,libgcrypt)))
    (synopsis "Guile bindings to libssh")
    (description
     "Guile-SSH is a library that provides access to the SSH protocol for
programs written in GNU Guile interpreter.  It is a wrapper to the underlying
libssh library.")
    (license license:gpl3+)))

(define-public guile2.2-ssh
  (deprecated-package "guile2.2-ssh" guile-ssh))

(define-public guile2.0-ssh
  (package
    (inherit guile-ssh)
    (name "guile2.0-ssh")
    (inputs `(("guile" ,guile-2.0)
              ,@(alist-delete "guile" (package-inputs guile-ssh))))))

(define-public corkscrew
  (package
    (name "corkscrew")
    (version "2.0")
    (source
     (origin
       (method url-fetch)
       ;; The agroman.net domain name expired on 2017-03-23, and the original
       ;; "http://www.agroman.net/corkscrew/corkscrew-2.0.tar.gz" now returns
       ;; bogus HTML.  Perhaps it will yet return.  Until then, use a mirror.
       (uri (string-append "https://downloads.openwrt.org/sources/"
                           "corkscrew-" version ".tar.gz"))
       (sha256 (base32
                "1gmhas4va6gd70i2x2mpxpwpgww6413mji29mg282jms3jscn3qd"))))
    (build-system gnu-build-system)
    (arguments
     `(#:phases
       (modify-phases %standard-phases
         (replace 'configure
           ;; Replace configure phase as the ./configure script does not like
           ;; CONFIG_SHELL and SHELL passed as parameters
           (lambda* (#:key outputs build target #:allow-other-keys)
             (let* ((out   (assoc-ref outputs "out"))
                    (bash  (which "bash"))
                    ;; Set --build and --host flags as the provided config.guess
                    ;; is not able to detect them
                    (flags `(,(string-append "--prefix=" out)
                             ,(string-append "--build=" build)
                             ,(string-append "--host=" (or target build)))))
               (setenv "CONFIG_SHELL" bash)
               (apply invoke bash "./configure" flags))))
         (add-after 'install 'install-documentation
           (lambda* (#:key outputs #:allow-other-keys)
             (let* ((out (assoc-ref outputs "out"))
                    (doc (string-append out "/share/doc/" ,name "-" ,version)))
               (install-file "README" doc)
               #t))))))
    (home-page "http://www.agroman.net/corkscrew")
    (synopsis "SSH tunneling through HTTP(S) proxies")
    (description
     "Corkscrew tunnels SSH connections through most HTTP and HTTPS proxies.
Proxy authentication is only supported through the plain-text HTTP basic
authentication scheme.")
    (license license:gpl2+)))

(define-public mosh
  (package
    (name "mosh")
    (version "1.3.2")
    (source (origin
              (method url-fetch)
              (uri (string-append "https://mosh.org/mosh-" version ".tar.gz"))
              (sha256
               (base32
                "05hjhlp6lk8yjcy59zywpf0r6s0h0b9zxq0lw66dh9x8vxrhaq6s"))))
    (build-system gnu-build-system)
    (arguments
     '(#:phases
       (modify-phases %standard-phases
         (add-after 'install 'wrap
           (lambda* (#:key outputs #:allow-other-keys)
             ;; Make sure 'mosh' can find 'mosh-client' and
             ;; 'mosh-server'.
             (let* ((out (assoc-ref outputs "out"))
                    (bin (string-append out "/bin")))
               (wrap-program (string-append bin "/mosh")
                             `("PATH" ":" prefix (,bin)))))))))
    (native-inputs
     `(("pkg-config" ,pkg-config)))
    (inputs
     `(("openssl" ,openssl)
       ("perl" ,perl)
       ("perl-io-tty" ,perl-io-tty)
       ("zlib" ,zlib)
       ("ncurses" ,ncurses)
       ("protobuf" ,protobuf)
       ("boost-headers" ,boost)))
    (home-page "https://mosh.org/")
    (synopsis "Remote shell tolerant to intermittent connectivity")
    (description
     "Remote terminal application that allows roaming, supports intermittent
connectivity, and provides intelligent local echo and line editing of user
keystrokes.  Mosh is a replacement for SSH.  It's more robust and responsive,
especially over Wi-Fi, cellular, and long-distance links.")
    (license license:gpl3+)))

(define-public et
  (package
    (name "et")
    (version "3.1.0")
    (source
     (origin
       (method url-fetch)
       (uri (string-append
             "https://github.com/MisterTea/EternalTCP/archive/et-v"
             version ".tar.gz"))
       (sha256
        (base32 "1n2w2kqbshdmbb0gz4yizyw9gqfls6qm2dnwx1d9c2hz7hmi7521"))))
    (build-system cmake-build-system)
    (arguments `(#:tests? #f))
    (native-inputs
     `(("pkg-config" ,pkg-config)))
    (inputs `(("glog" ,glog)
              ("gflags" ,gflags)
              ("libsodium" ,libsodium)
              ("protobuf" ,protobuf)))
    (synopsis "Remote shell that automatically reconnects")
    (description
     "Eternal Terminal (ET) is a remote shell that automatically reconnects
without interrupting the session.  Unlike SSH sessions, ET sessions will
survive even network outages and IP changes.  ET uses a custom protocol over
TCP, not the SSH protocol.")
    (home-page "https://mistertea.github.io/EternalTCP/")
    (license license:asl2.0)))

(define-public dropbear
  (package
    (name "dropbear")
    (version "2019.78")
    (source
     (origin
       (method url-fetch)
       (uri (string-append
             "https://matt.ucc.asn.au/dropbear/releases/"
             "dropbear-" version ".tar.bz2"))
       (sha256
        (base32 "19242qlr40pbqfqd0gg6h8qpj38q6lgv03ja6sahj9vj2abnanaj"))))
    (build-system gnu-build-system)
    (arguments `(#:tests? #f))  ; there is no "make check" or anything similar
    ;; TODO: Investigate unbundling libtommath and libtomcrypt or at least
    ;; cherry-picking important bug fixes from them. See <bugs.gnu.org/24674>
    ;; for more information.
    (inputs `(("zlib" ,zlib)))
    (synopsis "Small SSH server and client")
    (description "Dropbear is a relatively small SSH server and
client.  It runs on a variety of POSIX-based platforms.  Dropbear is
particularly useful for embedded systems, such as wireless routers.")
    (home-page "https://matt.ucc.asn.au/dropbear/dropbear.html")
    (license (license:x11-style "" "See file LICENSE."))))

(define-public liboop
  (package
    (name "liboop")
    (version "1.0.1")
    (source
     (origin
      (method url-fetch)
      (uri (string-append "http://ftp.lysator.liu.se/pub/liboop/"
                          name "-" version ".tar.gz"))
      (sha256
       (base32
        "1q0p1l72pq9k3bi7a366j2rishv7dzzkg3i6r2npsfg7cnnidbsn"))))
    (build-system gnu-build-system)
    (home-page "http://www.lysator.liu.se/liboop/")
    (synopsis "Event loop library")
    (description "Liboop is a low-level event loop management library for
POSIX-based operating systems.  It supports the development of modular,
multiplexed applications which may respond to events from several sources.  It
replaces the \"select() loop\" and allows the registration of event handlers
for file and network I/O, timers and signals.  Since processes use these
mechanisms for almost all external communication, liboop can be used as the
basis for almost any application.")
    (license license:lgpl2.1+)))

(define-public lsh
  (package
    (name "lsh")
    (version "2.1")
    (source (origin
              (method url-fetch)
              (uri (string-append "mirror://gnu/lsh/lsh-"
                                  version ".tar.gz"))
              (sha256
               (base32
                "1qqjy9zfzgny0rkb27c8c7dfsylvb6n0ld8h3an2r83pmaqr9gwb"))
              (modules '((guix build utils)))
              (snippet
               '(begin
                  (substitute* "src/testsuite/functions.sh"
                    (("localhost")
                     ;; Avoid host name lookups since they don't work in
                     ;; chroot builds.
                     "127.0.0.1")
                    (("set -e")
                     ;; Make tests more verbose.
                     "set -e\nset -x"))

                  (substitute* (find-files "src/testsuite" "-test$")
                    (("localhost") "127.0.0.1"))

                  (substitute* "src/testsuite/login-auth-test"
                    (("/bin/cat") "cat"))
                  #t))))
    (build-system gnu-build-system)
    (native-inputs
     `(("m4" ,m4)
       ("guile" ,guile-2.0)
       ("gperf" ,gperf)
       ("psmisc" ,psmisc)))                       ; for `killall'
    (inputs
     `(("nettle" ,nettle-2)
       ("linux-pam" ,linux-pam)

       ;; 'rl.c' uses the 'CPPFunction' type, which is no longer in
       ;; Readline 6.3.
       ("readline" ,readline-6.2)

       ("liboop" ,liboop)
       ("zlib" ,zlib)
       ("gmp" ,gmp)

       ;; The server (lshd) invokes xauth when X11 forwarding is requested.
       ;; This adds 24 MiB (or 27%) to the closure of lsh.
       ("xauth" ,xauth)))
    (arguments
     '(;; Skip the `configure' test that checks whether /dev/ptmx &
       ;; co. work as expected, because it relies on impurities (for
       ;; instance, /dev/pts may be unavailable in chroots.)
       #:configure-flags '("lsh_cv_sys_unix98_ptys=yes"

                           ;; Use glibc's argp rather than the bundled one.
                           "--with-system-argp"

                           ;; 'lsh_argp.h' checks HAVE_ARGP_PARSE but nothing
                           ;; defines it.
                           "CPPFLAGS=-DHAVE_ARGP_PARSE")

       ;; FIXME: Tests won't run in a chroot, presumably because
       ;; /etc/profile is missing, and thus clients get an empty $PATH
       ;; and nothing works.
       #:tests? #f

       #:phases
       (modify-phases %standard-phases
         (add-before 'configure 'pre-configure
           (lambda* (#:key inputs #:allow-other-keys)
             (let* ((nettle    (assoc-ref inputs "nettle"))
                    (sexp-conv (string-append nettle "/bin/sexp-conv")))
               ;; Remove argp from the list of sub-directories; we don't want
               ;; to build it, really.
               (substitute* "src/Makefile.in"
                 (("^SUBDIRS = argp")
                  "SUBDIRS ="))

               ;; Make sure 'lsh' and 'lshd' pick 'sexp-conv' in the right place
               ;; by default.
               (substitute* "src/environ.h.in"
                 (("^#define PATH_SEXP_CONV.*")
                  (string-append "#define PATH_SEXP_CONV \""
                                 sexp-conv "\"\n")))

               ;; Same for the 'lsh-authorize' script.
               (substitute* "src/lsh-authorize"
                 (("=sexp-conv")
                  (string-append "=" sexp-conv)))

               ;; Tell lshd where 'xauth' lives.  Another option would be to
               ;; hardcode "/run/current-system/profile/bin/xauth", thereby
               ;; reducing the closure size, but that wouldn't work on foreign
               ;; distros.
               (with-fluids ((%default-port-encoding "ISO-8859-1"))
                 (substitute* "src/server_x11.c"
                   (("define XAUTH_PROGRAM.*")
                    (string-append "define XAUTH_PROGRAM \""
                                   (assoc-ref inputs "xauth")
                                   "/bin/xauth\"\n")))))

             ;; Tests rely on $USER being set.
             (setenv "USER" "guix"))))))
    (home-page "http://www.lysator.liu.se/~nisse/lsh/")
    (synopsis "GNU implementation of the Secure Shell (ssh) protocols")
    (description
     "GNU lsh is a free implementation of the SSH version 2 protocol.  It is
used to create a secure line of communication between two computers,
providing shell access to the server system from the client.  It provides
both the server daemon and the client application, as well as tools for
manipulating key files.")
    (license license:gpl2+)))

(define-public sshpass
  (package
    (name "sshpass")
    (version "1.06")
    (synopsis "Non-interactive password authentication with SSH")
    (home-page "https://sourceforge.net/projects/sshpass/")
    (source
     (origin
       (method url-fetch)
       (uri (string-append "mirror://sourceforge/sshpass/sshpass/"
                           version "/sshpass-" version ".tar.gz"))
       (sha256
        (base32
         "0q7fblaczb7kwbsz0gdy9267z0sllzgmf0c7z5c9mf88wv74ycn6"))))
    (build-system gnu-build-system)
    (description "sshpass is a tool for non-interactivly performing password
authentication with SSH's so-called @dfn{interactive keyboard password
authentication}.")
    (license license:gpl2+)))

(define-public autossh
  (package
    (name "autossh")
    (version "1.4g")
    (source
     (origin
       (method url-fetch)
       (uri (string-append
             "https://www.harding.motd.ca/autossh/autossh-"
             version ".tgz"))
       (sha256
        (base32 "0xqjw8df68f4kzkns5gcah61s5wk0m44qdk2z1d6388w6viwxhsz"))))
    (build-system gnu-build-system)
    (arguments `(#:tests? #f)) ; There is no "make check" or anything similar
    (inputs `(("openssh" ,openssh)))
    (synopsis "Automatically restart SSH sessions and tunnels")
    (description "autossh is a program to start a copy of @command{ssh} and
monitor it, restarting it as necessary should it die or stop passing traffic.")
    (home-page "https://www.harding.motd.ca/autossh/")
    (license
     ;; Why point to a source file?  Well, all the individual files have a
     ;; copy of this license in their headers, but there's no separate file
     ;; with that information.
     (license:non-copyleft "file://autossh.c"))))

(define-public pdsh
  (package
    (name "pdsh")
    (version "2.33")
    (source
     (origin
       (method url-fetch)
       (uri (string-append "https://github.com/chaos/pdsh/"
                           "releases/download/pdsh-" version
                           "/pdsh-" version ".tar.gz"))
       (file-name (string-append name "-" version ".tar.gz"))
       (sha256
        (base32 "0bwlkl9inj66iwvafg00pi3sk9n673phdi0kcc59y9nn55s0hs3k"))))
    (build-system gnu-build-system)
    (arguments
     `(#:configure-flags
       (list "--with-ssh")
       #:phases
       (modify-phases %standard-phases
         (add-after 'unpack 'patch-/bin/sh
           (lambda _
             (substitute* '("tests/t0006-pdcp.sh"
                            "tests/t0004-module-loading.sh"
                            "tests/t2001-ssh.sh"
                            "tests/t1003-slurm.sh"
                            "tests/t6036-long-output-lines.sh"
                            "tests/aggregate-results.sh"
                            "tests/t2000-exec.sh"
                            "tests/t0002-internal.sh"
                            "tests/t1002-dshgroup.sh"
                            "tests/t5000-dshbak.sh"
                            "tests/t0001-basic.sh"
                            "tests/t0005-rcmd_type-and-user.sh"
                            "tests/test-lib.sh"
                            "tests/t2002-mrsh.sh"
                            "tests/t0003-wcoll.sh"
                            "tests/test-modules/pcptest.c")
               (("/bin/sh") (which "bash")))
             #t))
         (add-after 'unpack 'patch-tests
           (lambda _
             (substitute* "tests/t6036-long-output-lines.sh"
               (("which") (which "which")))
             #t)))))
    (inputs
     `(("openssh" ,openssh)
       ("mit-krb5" ,mit-krb5)
       ("perl" ,perl)))
    (native-inputs
     `(("which" ,which)))
    (home-page "https://github.com/chaos/pdsh")
    (synopsis "Parallel distributed shell")
    (description "Pdsh is a an efficient, multithreaded remote shell client
which executes commands on multiple remote hosts in parallel.  Pdsh implements
dynamically loadable modules for extended functionality such as new remote
shell services and remote host selection.")
    (license license:gpl2+)))

(define-public clustershell
  (package
    (name "clustershell")
    (version "1.8")
    (source
     (origin
       (method url-fetch)
       (uri (string-append "https://github.com/cea-hpc/clustershell/archive/v"
                           version
                           ".tar.gz"))
       (sha256
        (base32 "1qyf6zp5ikk8rk7zvx5ssbgr9si2bqv3a3415590kd07s7i16nmd"))
       (file-name (string-append name "-" version ".tar.gz"))))
    (build-system python-build-system)
    (inputs `(("openssh" ,openssh)))
    (propagated-inputs `(("python-pyyaml" ,python-pyyaml)))
    (arguments
     `(#:phases (modify-phases %standard-phases
                  (add-before 'build 'record-openssh-file-name
                    (lambda* (#:key inputs #:allow-other-keys)
                      (let ((ssh (assoc-ref inputs "openssh")))
                        (substitute* "lib/ClusterShell/Worker/Ssh.py"
                          (("info\\(\"ssh_path\"\\) or \"ssh\"")
                           (string-append "info(\"ssh_path\") or \""
                                          ssh "/bin/ssh\"")))
                        #t))))))
    (home-page "https://cea-hpc.github.io/clustershell/")
    (synopsis "Scalable event-driven Python framework for cluster administration")
    (description
     "ClusterShell is an event-driven Python framework, designed to run local
or distant commands in parallel on server farms or on large GNU/Linux
clusters.  It will take care of common issues encountered on HPC clusters,
such as operating on groups of nodes, running distributed commands using
optimized execution algorithms, as well as gathering results and merging
identical outputs, or retrieving return codes.  ClusterShell takes advantage
of existing remote shell facilities such as SSH.")
    (license license:lgpl2.1+)))