595 lines
24 KiB
Scheme
595 lines
24 KiB
Scheme
;;; GNU Guix --- Functional package management for GNU
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;;; Copyright © 2014 Nikita Karetnikov <nikita@karetnikov.org>
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;;; Copyright © 2014, 2015, 2017, 2018, 2019, 2021 Ludovic Courtès <ludo@gnu.org>
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;;;
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;;; This file is part of GNU Guix.
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;;;
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;;; GNU Guix is free software; you can redistribute it and/or modify it
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;;; under the terms of the GNU General Public License as published by
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;;; the Free Software Foundation; either version 3 of the License, or (at
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;;; your option) any later version.
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;;;
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;;; GNU Guix is distributed in the hope that it will be useful, but
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;;; WITHOUT ANY WARRANTY; without even the implied warranty of
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;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;;; GNU General Public License for more details.
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;;;
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;;; You should have received a copy of the GNU General Public License
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;;; along with GNU Guix. If not, see <http://www.gnu.org/licenses/>.
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(define-module (test-substitute)
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#:use-module (guix scripts substitute)
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#:use-module (guix narinfo)
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#:use-module (guix base64)
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#:use-module (gcrypt hash)
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#:use-module (guix serialization)
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#:use-module (gcrypt pk-crypto)
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#:use-module (guix pki)
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#:use-module (guix config)
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#:use-module (guix base32)
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#:use-module ((guix store) #:select (%store-prefix))
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#:use-module ((guix ui) #:select (guix-warning-port))
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#:use-module ((guix utils)
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#:select (call-with-temporary-directory
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call-with-compressed-output-port))
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#:use-module ((guix build utils)
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#:select (mkdir-p delete-file-recursively dump-port))
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#:use-module (guix tests http)
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#:use-module (rnrs bytevectors)
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#:use-module (rnrs io ports)
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#:use-module (web uri)
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#:use-module (ice-9 regex)
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#:use-module (srfi srfi-11)
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#:use-module (srfi srfi-26)
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#:use-module (srfi srfi-34)
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#:use-module (srfi srfi-35)
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#:use-module ((srfi srfi-64) #:hide (test-error)))
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(define-syntax-rule (test-quit name error-rx exp)
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"Emit a test that passes when EXP throws to 'quit' with value 1, and when
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it writes to GUIX-WARNING-PORT a messages that matches ERROR-RX."
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(test-equal name
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'(1 #t)
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(let ((error-output (open-output-string)))
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(parameterize ((current-error-port error-output)
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(guix-warning-port error-output))
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(catch 'quit
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(lambda ()
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exp
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#f)
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(lambda (key value)
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(list value
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(let ((message (get-output-string error-output)))
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(->bool (string-match error-rx message))))))))))
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(define (request-substitution item destination)
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"Run 'guix substitute --substitute' to fetch ITEM to DESTINATION."
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(parameterize ((guix-warning-port (current-error-port)))
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(with-input-from-string (string-append "substitute " item " "
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destination "\n")
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(lambda ()
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(guix-substitute "--substitute")))))
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(define %public-key
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;; This key is known to be in the ACL by default.
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(call-with-input-file (string-append %config-directory "/signing-key.pub")
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(compose string->canonical-sexp get-string-all)))
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(define %private-key
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(call-with-input-file (string-append %config-directory "/signing-key.sec")
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(compose string->canonical-sexp get-string-all)))
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(define* (signature-body bv #:key (public-key %public-key))
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"Return the signature of BV as the base64-encoded body of a narinfo's
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'Signature' field."
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(base64-encode
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(string->utf8
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(canonical-sexp->string
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(signature-sexp (bytevector->hash-data (sha256 bv)
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#:key-type 'rsa)
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%private-key
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public-key)))))
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(define %wrong-public-key
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(string->canonical-sexp "(public-key
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(rsa
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(n #00E05873AC2B168760343145918E954EE9AB73C026355693B192E01EE835261AA689E9EF46642E895BCD65C648524059FC450E4BA77A68F4C52D0E39EF0CC9359709AB6AAB153B63782201871325B0FDA19CB401CD99FD0C31A91CA9000AA90A77E82B89E036FB63BC1D3961207469B3B12468977148D376F8012BB12A4B11A8F1#)
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(e #010001#)
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)
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)"))
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(define* (signature-field bv-or-str
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#:key (version "1") (public-key %public-key))
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"Return the 'Signature' field value of bytevector/string BV-OR-STR, using
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PUBLIC-KEY as the signature's principal, and using VERSION as the signature
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version identifier.."
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(string-append version ";example.gnu.org;"
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(signature-body (if (string? bv-or-str)
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(string->utf8 bv-or-str)
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bv-or-str)
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#:public-key public-key)))
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(test-begin "substitute")
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(test-quit "not a number"
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"signature version"
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(narinfo-signature->canonical-sexp
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(signature-field "foo" #:version "not a number")))
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(test-quit "wrong version number"
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"unsupported.*version"
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(narinfo-signature->canonical-sexp
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(signature-field "foo" #:version "2")))
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(test-assert "valid narinfo-signature->canonical-sexp"
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(canonical-sexp? (narinfo-signature->canonical-sexp (signature-field "foo"))))
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(define %main-substitute-directory
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;; The place where 'call-with-narinfo' stores its data by default.
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(uri-path (string->uri (getenv "GUIX_BINARY_SUBSTITUTE_URL"))))
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(define %alternate-substitute-directory
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;; Another place.
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(string-append (dirname %main-substitute-directory)
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"/substituter-alt-data"))
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(define %narinfo
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;; Skeleton of the narinfo used below.
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(string-append "StorePath: " (%store-prefix)
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"/aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa-foo
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URL: example.nar
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Compression: none
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NarHash: sha256:" (bytevector->nix-base32-string
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(sha256 (string->utf8 "Substitutable data."))) "
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NarSize: 42
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References: bar baz
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Deriver: " (%store-prefix) "/foo.drv
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System: mips64el-linux\n"))
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(define* (call-with-narinfo narinfo thunk
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#:optional
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(narinfo-directory %main-substitute-directory))
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"Call THUNK in a context where the directory at URL is populated with
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a file for NARINFO."
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(mkdir-p narinfo-directory)
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(let ((cache-directory (string-append (getenv "XDG_CACHE_HOME")
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"/guix/substitute/")))
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(dynamic-wind
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(lambda ()
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(when (file-exists? cache-directory)
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(delete-file-recursively cache-directory))
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(call-with-output-file (string-append narinfo-directory
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"/nix-cache-info")
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(lambda (port)
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(format port "StoreDir: ~a\nWantMassQuery: 0\n"
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(%store-prefix))))
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(call-with-output-file (string-append narinfo-directory "/"
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"aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"
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".narinfo")
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(cut display narinfo <>))
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;; Prepare the nar.
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(call-with-output-file
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(string-append narinfo-directory "/example.out")
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(cut display "Substitutable data." <>))
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(call-with-output-file
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(string-append narinfo-directory "/example.nar")
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(cute write-file
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(string-append narinfo-directory "/example.out") <>))
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(%allow-unauthenticated-substitutes? #f))
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thunk
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(lambda ()
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(when (file-exists? cache-directory)
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(delete-file-recursively cache-directory))))))
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(define-syntax-rule (with-narinfo narinfo body ...)
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(call-with-narinfo narinfo (lambda () body ...)))
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(define-syntax-rule (with-narinfo* narinfo directory body ...)
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(call-with-narinfo narinfo (lambda () body ...) directory))
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;; Transmit these options to 'guix substitute'.
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(substitute-urls (list (getenv "GUIX_BINARY_SUBSTITUTE_URL")))
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;; Never use file descriptor 4, unlike what happens when invoked by the
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;; daemon.
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(%reply-file-descriptor #f)
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(test-equal "query narinfo without signature"
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"" ; not substitutable
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(with-narinfo %narinfo
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(string-trim-both
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(with-output-to-string
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(lambda ()
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(with-input-from-string (string-append "have " (%store-prefix)
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"/aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa-foo")
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(lambda ()
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(guix-substitute "--query"))))))))
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(test-equal "query narinfo with invalid hash"
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;; The hash in the signature differs from the hash of %NARINFO.
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""
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(with-narinfo (string-append %narinfo "Signature: "
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(signature-field "different body")
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"\n")
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(string-trim-both
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(with-output-to-string
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(lambda ()
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(with-input-from-string (string-append "have " (%store-prefix)
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"/aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa-foo")
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(lambda ()
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(guix-substitute "--query"))))))))
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(test-equal "query narinfo with signature over nothing"
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;; The signature is computed over the empty string, not over the important
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;; parts, so the narinfo must be ignored.
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""
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(with-narinfo (string-append "Signature: " (signature-field "") "\n"
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%narinfo "\n")
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(string-trim-both
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(with-output-to-string
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(lambda ()
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(with-input-from-string (string-append "have " (%store-prefix)
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"/aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa-foo")
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(lambda ()
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(guix-substitute "--query"))))))))
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(test-equal "query narinfo with signature over irrelevant bits"
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;; The signature is valid but it does not cover the
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;; StorePath/NarHash/References tuple and is thus irrelevant; the narinfo
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;; must be ignored.
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""
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(let ((prefix (string-append "StorePath: " (%store-prefix)
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"/aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa-foo
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URL: example.nar
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Compression: none\n")))
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(with-narinfo (string-append prefix
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"Signature: " (signature-field prefix) "
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NarHash: sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
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NarSize: 42
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References: bar baz
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Deriver: " (%store-prefix) "/foo.drv
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System: mips64el-linux\n")
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(string-trim-both
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(with-output-to-string
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(lambda ()
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(with-input-from-string (string-append "have " (%store-prefix)
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"/aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa-foo")
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(lambda ()
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(guix-substitute "--query")))))))))
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(test-equal "query narinfo signed with authorized key"
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(string-append (%store-prefix) "/aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa-foo")
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(with-narinfo (string-append %narinfo "Signature: "
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(signature-field %narinfo)
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"\n")
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(string-trim-both
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(with-output-to-string
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(lambda ()
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(with-input-from-string (string-append "have " (%store-prefix)
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"/aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa-foo")
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(lambda ()
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(guix-substitute "--query"))))))))
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(test-equal "query narinfo signed with unauthorized key"
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"" ; not substitutable
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(with-narinfo (string-append %narinfo "Signature: "
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(signature-field
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%narinfo
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#:public-key %wrong-public-key)
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"\n")
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(string-trim-both
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(with-output-to-string
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(lambda ()
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(with-input-from-string (string-append "have " (%store-prefix)
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"/aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa-foo")
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(lambda ()
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(guix-substitute "--query"))))))))
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(test-quit "substitute, no signature"
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"no valid substitute"
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(with-narinfo %narinfo
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(with-input-from-string (string-append "substitute "
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(%store-prefix)
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"/aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa-foo"
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" foo\n")
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(lambda ()
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(guix-substitute "--substitute")))))
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(test-quit "substitute, invalid narinfo hash"
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"no valid substitute"
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;; The hash in the signature differs from the hash of %NARINFO.
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(with-narinfo (string-append %narinfo "Signature: "
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(signature-field "different body")
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"\n")
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(with-input-from-string (string-append "substitute "
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(%store-prefix)
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"/aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa-foo"
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" foo\n")
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(lambda ()
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(guix-substitute "--substitute")))))
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(test-equal "substitute, invalid hash"
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(string-append "hash-mismatch sha256 "
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(bytevector->nix-base32-string (sha256 #vu8())) " "
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(let-values (((port get-hash)
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(open-hash-port (hash-algorithm sha256)))
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((content)
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"Substitutable data."))
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(write-file-tree "foo" port
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#:file-type+size
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(lambda _
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(values 'regular
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(string-length content)))
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#:file-port
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(lambda _
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(open-input-string content)))
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(close-port port)
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(bytevector->nix-base32-string (get-hash)))
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"\n")
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;; Arrange so the actual data hash does not match the 'NarHash' field in the
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;; narinfo.
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(with-output-to-string
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(lambda ()
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(let ((narinfo (string-append "StorePath: " (%store-prefix)
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"/aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa-wrong-hash
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URL: example.nar
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Compression: none
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NarHash: sha256:" (bytevector->nix-base32-string (sha256 #vu8())) "
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NarSize: 42
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References:
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Deriver: " (%store-prefix) "/foo.drv
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System: mips64el-linux\n")))
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(with-narinfo (string-append narinfo "Signature: "
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(signature-field narinfo) "\n")
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(call-with-temporary-directory
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(lambda (directory)
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(with-input-from-string (string-append
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"substitute " (%store-prefix)
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"/aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa-wrong-hash "
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directory "/wrong-hash\n")
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(lambda ()
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(guix-substitute "--substitute"))))))))))
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(test-quit "substitute, unauthorized key"
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"no valid substitute"
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(with-narinfo (string-append %narinfo "Signature: "
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(signature-field
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%narinfo
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#:public-key %wrong-public-key)
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"\n")
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(with-input-from-string (string-append "substitute "
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(%store-prefix)
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"/aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa-foo"
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" foo\n")
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(lambda ()
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(guix-substitute "--substitute")))))
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(test-equal "substitute, authorized key"
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'("Substitutable data." 1 #o444)
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(with-narinfo (string-append %narinfo "Signature: "
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(signature-field %narinfo))
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(dynamic-wind
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(const #t)
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(lambda ()
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(request-substitution (string-append (%store-prefix)
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"/aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa-foo")
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"substitute-retrieved")
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(list (call-with-input-file "substitute-retrieved" get-string-all)
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(stat:mtime (lstat "substitute-retrieved"))
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(stat:perms (lstat "substitute-retrieved"))))
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(lambda ()
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(false-if-exception (delete-file "substitute-retrieved"))))))
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(test-equal "substitute, unauthorized narinfo comes first"
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"Substitutable data."
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(with-narinfo*
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(string-append %narinfo "Signature: "
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(signature-field
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%narinfo
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#:public-key %wrong-public-key))
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%alternate-substitute-directory
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(with-narinfo* (string-append %narinfo "Signature: "
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(signature-field %narinfo))
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%main-substitute-directory
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(dynamic-wind
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(const #t)
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(lambda ()
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;; Remove this file so that the substitute can only be retrieved
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;; from %ALTERNATE-SUBSTITUTE-DIRECTORY.
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(delete-file (string-append %main-substitute-directory
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"/example.nar"))
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(parameterize ((substitute-urls
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(map (cut string-append "file://" <>)
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(list %alternate-substitute-directory
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%main-substitute-directory))))
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(request-substitution (string-append (%store-prefix)
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"/aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa-foo")
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"substitute-retrieved"))
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(call-with-input-file "substitute-retrieved" get-string-all))
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(lambda ()
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(false-if-exception (delete-file "substitute-retrieved")))))))
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(test-equal "substitute, unsigned narinfo comes first"
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"Substitutable data."
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(with-narinfo* %narinfo ;not signed!
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%alternate-substitute-directory
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(with-narinfo* (string-append %narinfo "Signature: "
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(signature-field %narinfo))
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%main-substitute-directory
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(dynamic-wind
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(const #t)
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(lambda ()
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;; Remove this file so that the substitute can only be retrieved
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;; from %ALTERNATE-SUBSTITUTE-DIRECTORY.
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(delete-file (string-append %main-substitute-directory
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"/example.nar"))
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(parameterize ((substitute-urls
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(map (cut string-append "file://" <>)
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(list %alternate-substitute-directory
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%main-substitute-directory))))
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(request-substitution (string-append (%store-prefix)
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"/aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa-foo")
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"substitute-retrieved"))
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(call-with-input-file "substitute-retrieved" get-string-all))
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(lambda ()
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(false-if-exception (delete-file "substitute-retrieved")))))))
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(test-equal "substitute, first narinfo is unsigned and has wrong hash"
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"Substitutable data."
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(with-narinfo* (regexp-substitute #f
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(string-match "NarHash: [[:graph:]]+"
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%narinfo)
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'pre
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"NarHash: sha256:"
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(bytevector->nix-base32-string
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(make-bytevector 32))
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'post)
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%alternate-substitute-directory
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(with-narinfo* (string-append %narinfo "Signature: "
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(signature-field %narinfo))
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%main-substitute-directory
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(dynamic-wind
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(const #t)
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(lambda ()
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;; This time remove the file so that the substitute can only be
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;; retrieved from %MAIN-SUBSTITUTE-DIRECTORY.
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(delete-file (string-append %alternate-substitute-directory
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"/example.nar"))
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(parameterize ((substitute-urls
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(map (cut string-append "file://" <>)
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(list %alternate-substitute-directory
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%main-substitute-directory))))
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(request-substitution (string-append (%store-prefix)
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"/aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa-foo")
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"substitute-retrieved"))
|
||
(call-with-input-file "substitute-retrieved" get-string-all))
|
||
(lambda ()
|
||
(false-if-exception (delete-file "substitute-retrieved")))))))
|
||
|
||
(test-equal "substitute, first narinfo is unsigned and has wrong refs"
|
||
"Substitutable data."
|
||
(with-narinfo* (regexp-substitute #f
|
||
(string-match "References: ([^\n]+)\n"
|
||
%narinfo)
|
||
'pre "References: " 1
|
||
" wrong set of references\n"
|
||
'post)
|
||
%alternate-substitute-directory
|
||
|
||
(with-narinfo* (string-append %narinfo "Signature: "
|
||
(signature-field %narinfo))
|
||
%main-substitute-directory
|
||
|
||
(dynamic-wind
|
||
(const #t)
|
||
(lambda ()
|
||
;; This time remove the file so that the substitute can only be
|
||
;; retrieved from %MAIN-SUBSTITUTE-DIRECTORY.
|
||
(delete-file (string-append %alternate-substitute-directory
|
||
"/example.nar"))
|
||
|
||
(parameterize ((substitute-urls
|
||
(map (cut string-append "file://" <>)
|
||
(list %alternate-substitute-directory
|
||
%main-substitute-directory))))
|
||
(request-substitution (string-append (%store-prefix)
|
||
"/aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa-foo")
|
||
"substitute-retrieved"))
|
||
(call-with-input-file "substitute-retrieved" get-string-all))
|
||
(lambda ()
|
||
(false-if-exception (delete-file "substitute-retrieved")))))))
|
||
|
||
(test-quit "substitute, two invalid narinfos"
|
||
"no valid substitute"
|
||
(with-narinfo* %narinfo ;not signed
|
||
%alternate-substitute-directory
|
||
|
||
(with-narinfo* (string-append %narinfo "Signature: " ;unauthorized
|
||
(signature-field
|
||
%narinfo
|
||
#:public-key %wrong-public-key))
|
||
%main-substitute-directory
|
||
|
||
(with-input-from-string (string-append "substitute "
|
||
(%store-prefix)
|
||
"/aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa-foo"
|
||
" substitute-retrieved\n")
|
||
(lambda ()
|
||
(guix-substitute "--substitute"))))))
|
||
|
||
(test-equal "substitute, narinfo with several URLs"
|
||
"Substitutable data."
|
||
(let ((narinfo (string-append "StorePath: " (%store-prefix)
|
||
"/aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa-foo
|
||
URL: example.nar.gz
|
||
Compression: gzip
|
||
URL: example.nar.lz
|
||
Compression: lzip
|
||
URL: example.nar
|
||
Compression: none
|
||
NarHash: sha256:" (bytevector->nix-base32-string
|
||
(sha256 (string->utf8 "Substitutable data."))) "
|
||
NarSize: 42
|
||
References: bar baz
|
||
Deriver: " (%store-prefix) "/foo.drv
|
||
System: mips64el-linux\n")))
|
||
(with-narinfo (string-append narinfo "Signature: "
|
||
(signature-field narinfo))
|
||
(dynamic-wind
|
||
(const #t)
|
||
(lambda ()
|
||
(define (compress input output compression)
|
||
(call-with-output-file output
|
||
(lambda (port)
|
||
(call-with-compressed-output-port compression port
|
||
(lambda (port)
|
||
(call-with-input-file input
|
||
(lambda (input)
|
||
(dump-port input port))))))))
|
||
|
||
(let ((nar (string-append %main-substitute-directory
|
||
"/example.nar")))
|
||
(compress nar (string-append nar ".gz") 'gzip)
|
||
(compress nar (string-append nar ".lz") 'lzip))
|
||
|
||
(parameterize ((substitute-urls
|
||
(list (string-append "file://"
|
||
%main-substitute-directory))))
|
||
(request-substitution (string-append (%store-prefix)
|
||
"/aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa-foo")
|
||
"substitute-retrieved"))
|
||
(call-with-input-file "substitute-retrieved" get-string-all))
|
||
(lambda ()
|
||
(false-if-exception (delete-file "substitute-retrieved")))))))
|
||
|
||
(test-end "substitute")
|
||
|
||
;;; Local Variables:
|
||
;;; eval: (put 'with-narinfo 'scheme-indent-function 1)
|
||
;;; eval: (put 'with-narinfo* 'scheme-indent-function 2)
|
||
;;; eval: (put 'test-quit 'scheme-indent-function 2)
|
||
;;; End:
|