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gnupg/tests/tpm2dtests/defs.scm
Werner Koch 84fcd8e6eb
tests: Use the new gpgconf.ctl based method.
* tests/openpgp/defs.scm:  We expect that stuff is now installed.
(tools): Fix the names.
(intsalled?, bin-prefix): Remove.
(tool-hardcoded): Simplify.
(gpg-conf'): Simplify.
(GNUPG_BUILDDIR): Do not anymore set this envvar.
* tests/tpm2dtests/defs.scm: Ditto.
--

This simplifies things a bit.
2021-10-01 15:05:01 +02:00

465 lines
15 KiB
Scheme

;; Common definitions for the OpenPGP test scripts.
;;
;; Copyright (C) 2016, 2017 g10 Code GmbH
;;
;; This file is part of GnuPG.
;;
;; GnuPG 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.
;;
;; GnuPG 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 this program; if not, see <http://www.gnu.org/licenses/>.
(let ((verbose (string->number (getenv "verbose"))))
(if (number? verbose)
(*set-verbose!* verbose)))
(define (qualify executable)
(string-append executable (getenv "EXEEXT")))
(define (getenv' key default)
(let ((value (getenv key)))
(if (string=? "" value)
default
value)))
(define (percent-decode s)
(define (decode c)
(if (and (> (length c) 2) (char=? #\% (car c)))
(integer->char (string->number (string #\# #\x (cadr c) (caddr c))))
#f))
(let loop ((i 0) (c (string->list s)) (r (make-string (string-length s))))
(if (null? c)
(substring r 0 i)
(let ((decoded (decode c)))
(string-set! r i (if decoded decoded (car c)))
(loop (+ 1 i) (if decoded (cdddr c) (cdr c)) r)))))
(assert (equal? (percent-decode "") ""))
(assert (equal? (percent-decode "%61") "a"))
(assert (equal? (percent-decode "foob%61r") "foobar"))
(define (percent-encode s)
(define (encode c)
`(#\% ,@(string->list (number->string (char->integer c) 16))))
(let loop ((acc '()) (cs (reverse (string->list s))))
(if (null? cs)
(list->string acc)
(case (car cs)
((#\: #\%)
(loop (append (encode (car cs)) acc) (cdr cs)))
(else
(loop (cons (car cs) acc) (cdr cs)))))))
(assert (equal? (percent-encode "") ""))
(assert (equal? (percent-encode "%61") "%2561"))
(assert (equal? (percent-encode "foob%61r") "foob%2561r"))
(define tools
'((gpgv "GPGV" "bin/gpgv")
(gpg-connect-agent "GPG_CONNECT_AGENT" "bin/gpg-connect-agent")
(gpgconf "GPGCONF" "bin/gpgconf")
(gpg-preset-passphrase "GPG_PRESET_PASSPHRASE"
"libexec/gpg-preset-passphrase")
(gpgtar "GPGTAR" "bin/gpgtar")
(tpm2daemon "TPM2DAEMON" "libexec/tpm2daemon")
(pinentry "PINENTRY" "openpgp/fake-pinentry")))
(define with-valgrind? (not (string=? (getenv "with_valgrind") "")))
(define (tool-hardcoded which)
(let ((t (assoc which tools)))
(getenv' (cadr t)
(qualify (string-append (getenv "GNUPG_BUILD_ROOT")
"/" (caddr t))))))
;; You can splice VALGRIND into your argument vector to run programs
;; under valgrind. For example, to run valgrind on gpg, you may want
;; to redefine gpg:
;;
;; (set! gpg `(,@valgrind ,@gpg))
;;
(define valgrind
'("/usr/bin/valgrind" -q --leak-check=no --track-origins=yes
--error-exitcode=154 --exit-on-first-error=yes))
(define (gpg-conf . args)
(gpg-conf' "" args))
(define (gpg-conf' input args)
(let ((s (call-popen `(,(tool-hardcoded 'gpgconf)
,@args) input)))
(map (lambda (line) (map percent-decode (string-split line #\:)))
(string-split-newlines s))))
(define :gc:c:name car)
(define :gc:c:description cadr)
(define :gc:c:pgmname caddr)
(define (:gc:o:name x) (list-ref x 0))
(define (:gc:o:flags x) (string->number (list-ref x 1)))
(define (:gc:o:level x) (string->number (list-ref x 2)))
(define (:gc:o:description x) (list-ref x 3))
(define (:gc:o:type x) (string->number (list-ref x 4)))
(define (:gc:o:alternate-type x) (string->number (list-ref x 5)))
(define (:gc:o:argument-name x) (list-ref x 6))
(define (:gc:o:default-value x) (list-ref x 7))
(define (:gc:o:default-argument x) (list-ref x 8))
(define (:gc:o:value x) (if (< (length x) 10) "" (list-ref x 9)))
(define (gpg-config component key)
(package
(define (value)
(let* ((conf (assoc key (gpg-conf '--list-options component)))
(type (:gc:o:type conf))
(value (:gc:o:value conf)))
(case type
((0 2 3) (string->number value))
((1 32) (substring value 1 (string-length value))))))
(define (update value)
(let ((value' (cond
((string? value) (string-append "\"" value))
((number? value) (number->string value))
(else (throw "Unsupported value" value)))))
(gpg-conf' (string-append key ":0:" (percent-encode value'))
`(--change-options ,component))))
(define (clear)
(gpg-conf' (string-append key ":16:")
`(--change-options ,component)))))
(define gpg-components (apply gpg-conf '(--list-components)))
(define (tool which)
(case which
((gpg gpg-agent scdaemon gpgsm dirmngr)
(:gc:c:pgmname (assoc (symbol->string which) gpg-components)))
(else
(tool-hardcoded which))))
(define (gpg-has-option? option)
(string-contains? (call-popen `(,(tool 'gpg) --dump-options) "")
option))
(define have-opt-always-trust
(catch #f
(with-ephemeral-home-directory (lambda ()) (lambda ())
(call-check `(,(tool 'gpg) --gpgconf-test --always-trust)))
#t))
(define GPG `(,(tool 'gpg) --no-permission-warning
,@(if have-opt-always-trust '(--always-trust) '())))
(define GPGV `(,(tool 'gpgv)))
(define PINENTRY (tool 'pinentry))
(define TPM2DAEMON (tool 'tpm2daemon))
(define (tr:gpg input args)
(tr:spawn input `(,@GPG --output **out** ,@args **in**)))
(define (pipe:gpg args)
(pipe:spawn `(,@GPG --output - ,@args)))
(define (gpg-with-colons args)
(let ((s (call-popen `(,@GPG --with-colons ,@args) "")))
(map (lambda (line) (string-split line #\:))
(string-split-newlines s))))
(define (secinfo name)
(assoc "sec" (gpg-with-colons `(--list-secret-key ,name))))
(define (ssbinfo name)
(assoc "ssb" (gpg-with-colons `(--list-secret-key ,name))))
(define (fingerprint name)
(:fpr (assoc "fpr" (gpg-with-colons `(--list-secret-key ,name)))))
;; convenient accessors for sec
(define (:cardinfo x) (list-ref x 14))
;; Convenient accessors for the colon output of pub.
(define (:type x) (string->symbol (list-ref x 0)))
(define (:length x) (string->number (list-ref x 2)))
(define (:alg x) (string->number (list-ref x 3)))
(define (:expire x) (list-ref x 6))
(define (:fpr x) (list-ref x 9))
(define (:cap x) (list-ref x 11))
(define (have-public-key? key)
(catch #f
(pair? (filter (lambda (l) (and (equal? 'fpr (:type l))
(equal? key::fpr (:fpr l))))
(gpg-with-colons `(--list-keys ,key::fpr))))))
(define (have-secret-key? key)
(catch #f
(pair? (filter (lambda (l) (and (equal? 'fpr (:type l))
(equal? key::fpr (:fpr l))))
(gpg-with-colons `(--list-secret-keys ,key::fpr))))))
(define (have-secret-key-file? key)
(file-exists? (path-join (getenv "GNUPGHOME") "private-keys-v1.d"
(string-append key::grip ".key"))))
(define (get-config what)
(string-split (caddar (gpg-with-colons `(--list-config ,what))) #\;))
(define all-pubkey-algos (delay (get-config "pubkeyname")))
(define all-hash-algos (delay (get-config "digestname")))
(define all-cipher-algos (delay (get-config "ciphername")))
(define all-compression-algos (delay (get-config "compressname")))
(define (have-pubkey-algo? x)
(not (not (member x (force all-pubkey-algos)))))
(define (have-hash-algo? x)
(not (not (member x (force all-hash-algos)))))
(define (have-cipher-algo? x)
(not (not (member x (force all-cipher-algos)))))
(define (have-compression-algo? x)
(not (not (member x (force all-compression-algos)))))
(define (gpg-pipe args0 args1 errfd)
(lambda (source sink)
(let* ((p (pipe))
(task0 (spawn-process-fd `(,@GPG ,@args0)
source (:write-end p) errfd))
(_ (close (:write-end p)))
(task1 (spawn-process-fd `(,@GPG ,@args1)
(:read-end p) sink errfd)))
(close (:read-end p))
(wait-processes (list GPG GPG) (list task0 task1) #t))))
;;
;; Do we have a software tpm
;;
(define have-swtpm? (not (and (string=? "" (getenv "TPMSERVER"))
(string=? "" (getenv "SWTPM")))))
(setenv "GPG_AGENT_INFO" "" #t)
(setenv "GNUPGHOME" (getcwd) #t)
(if have-swtpm?
(setenv "TPM_INTERFACE_TYPE" "socsim" #t))
(define GNUPGHOME (getcwd))
;;
;; GnuPG helper.
;;
;; Call GPG to obtain the hash sums. Either specify an input file in
;; ARGS, or an string in INPUT. Returns a list of (<algo>
;; "<hashsum>") lists.
(define (gpg-hash-string args input)
(map
(lambda (line)
(let ((p (string-split line #\:)))
(list (string->number (cadr p)) (caddr p))))
(string-split-newlines
(call-popen `(,@GPG --with-colons ,@args) input))))
;; Dearmor a file.
(define (dearmor source-name sink-name)
(pipe:do
(pipe:open source-name (logior O_RDONLY O_BINARY))
(pipe:spawn `(,@GPG --dearmor))
(pipe:write-to sink-name (logior O_WRONLY O_CREAT O_BINARY) #o600)))
(define (gpg-dump-packets source-name sink-name)
(pipe:do
(pipe:open source-name (logior O_RDONLY O_BINARY))
(pipe:spawn `(,@GPG --list-packets))
(pipe:write-to sink-name (logior O_WRONLY O_CREAT O_BINARY) #o600)))
;;
;; Support for test environment creation and teardown.
;;
(define (make-test-data filename size)
(call-with-binary-output-file
filename
(lambda (port)
(display (make-random-string size) port))))
(define (create-file name . lines)
(catch #f (unlink name))
(letfd ((fd (open name (logior O_WRONLY O_CREAT O_BINARY) #o600)))
(let ((port (fdopen fd "wb")))
(for-each (lambda (line) (display line port) (newline port))
lines))))
(define (create-gpghome)
(log "Creating test environment...")
(srandom (getpid))
(make-test-data "random_seed" 600)
(log "Creating configuration files")
(if (flag "--use-keyring" *args*)
(create-file "pubring.gpg"))
(create-file "gpg.conf"
;;"log-file socket:///tmp/S.wklog"
;;"verbose"
"no-greeting"
"no-secmem-warning"
"no-permission-warning"
"batch"
"no-auto-key-retrieve"
"no-auto-key-locate"
"allow-weak-digest-algos"
"ignore-mdc-error"
(if have-opt-always-trust
"no-auto-check-trustdb" "#no-auto-check-trustdb")
(string-append "agent-program "
(tool 'gpg-agent)
"|--debug-quick-random\n")
(if (flag "--use-keyboxd" *args*)
"use-keyboxd" "#use-keyboxd")
)
(create-file "gpg-agent.conf"
"allow-preset-passphrase"
"debug-all"
"log-file gpg-agent.log"
"no-grab"
"enable-ssh-support"
"s2k-count 65536"
(string-append "pinentry-program " (tool 'pinentry))
(string-append "tpm2daemon-program " (tool 'tpm2daemon))
"disable-scdaemon")
(create-file "msg.txt"
"This is a test of TPM signing and encryption"
"With two lines of text"))
;; Initialize the test environment, install appropriate configuration
;; and start the agent, without any keys.
(define (setup-environment)
(create-gpghome)
(start-agent)
(start-tpm))
(define (setup-environment-no-atexit)
(create-gpghome)
(start-agent #t))
;; Initialize the test environment, install appropriate configuration
;; and start the agent, with the keys from the legacy test suite.
(define (setup-legacy-environment)
(create-gpghome)
(if (member "--unpack-tarball" *args*)
(begin
(call-check `(,(tool 'gpgtar) --extract --directory=. ,(cadr *args*)))
(start-agent))
(begin
(start-agent)
(create-legacy-gpghome)))
(preset-passphrases))
;; start the tpm server
(define (start-tpm)
(if have-swtpm?
(begin (define pid (call-check `(,(in-srcdir "tests" "tpm2dtests" "start_sw_tpm.sh"))))
(if (not (null? pid))
(atexit (lambda ()
(call-check `("/bin/kill" ,pid))))))))
;; Create the socket dir and start the agent.
(define (start-agent . args)
(log "Starting gpg-agent...")
(let ((gnupghome (getenv "GNUPGHOME")))
(if (null? args)
(atexit (lambda ()
(with-home-directory gnupghome (stop-agent))))))
(catch (log "Warning: Creating socket directory failed:" (car *error*))
(gpg-conf '--create-socketdir))
(call-check `(,(tool 'gpg-connect-agent) --verbose
,(string-append "--agent-program=" (tool 'gpg-agent)
"|--debug-quick-random")
/bye)))
;; Stop the agent and other daemons and remove the socket dir.
(define (stop-agent)
(log "Stopping gpg-agent...")
(gpg-conf '--kill 'all)
(catch (log "Warning: Removing socket directory failed.")
(gpg-conf '--remove-socketdir)))
;; Get the trust level for KEYID. Any remaining arguments are simply
;; passed to GPG.
;;
;; This function only supports keys with a single user id.
(define (gettrust keyid . args)
(let ((trust
(list-ref (assoc "pub" (gpg-with-colons
`(,@args
--list-keys ,keyid))) 1)))
(unless (and (= 1 (string-length trust))
(member (string-ref trust 0) (string->list "oidreqnmfuws-")))
(fail "Bad trust value:" trust))
trust))
;; Check that KEYID's trust level matches EXPECTED-TRUST. Any
;; remaining arguments are simply passed to GPG.
;;
;; This function only supports keys with a single user id.
(define (checktrust keyid expected-trust . args)
(let ((trust (apply gettrust `(,keyid ,@args))))
(unless (string=? trust expected-trust)
(fail keyid ": Expected trust to be" expected-trust
"but got" trust))))
(define (keytotpm name select)
(let ((result (call-with-io `(,@GPG --command-fd=0 --edit-key ,name ,select keytotpm) "y\n")))
(if (= 0 (:retcode result))
(:stdout result)
(throw "keytotpm failed"
(:stderr result)))))
(define (quick-gen name algo)
(info "creating TPM " algo " key")
(call-check `(,@GPG --quick-generate-key ,name ,algo))
(keytotpm name "key 0")
(unless (string=? (:cardinfo (secinfo name)) "TPM-Protected")
(throw "key is not in the TPM")))
(define (quick-add name algo)
(info "adding TPM encryption " algo " key")
(call-check `(,@GPG --quick-add-key ,(fingerprint name) ,algo "encr"))
(keytotpm name "key 1")
(unless (string=? (:cardinfo (ssbinfo name)) "TPM-Protected")
(throw "Added key is not in the TPM")))
(define (check-sig name)
(info "checking TPM signing")
(call-check `(,@GPG --default-key ,name --sign msg.txt))
(call-check `(,@GPG --verify msg.txt.gpg))
(unlink "msg.txt.gpg"))
(define (check-encrypt name)
(info "Checking TPM decryption")
(call-check `(,@GPG --recipient ,name --encrypt msg.txt))
(call-check `(,@GPG --output msg.out.txt --decrypt msg.txt.gpg))
(unless (file=? "msg.txt" "msg.out.txt")
(throw "File did not decrypt to the same message"))
(unlink "msg.out.txt")
(unlink "msg.txt.gpg"))
;;
;; Tests are very simple: create primary key in TPM add encryption key
;; in TPM (verifies TPM primary can certify secondary), sign a message
;; with primary key and check signature encrypt a message with
;; encryption key and check signature
;;
(define (test-tpm name algo)
(quick-gen name algo)
(quick-add name algo)
(check-sig name)
(check-encrypt name))
;;
;; Enable checking with valgrind if the envvar "with_valgrind" is set
;;
(when with-valgrind?
(set! gpg `(,@valgrind ,@gpg)))
;;(set! *args* (append *args* (list "--use-keyboxd")))
;; end