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tests: Simplify 'substitute-binary' tests; reduce use of global variables.
* tests/substitute-binary.scm (signature-body): Change 'str' parameter
to 'bv', and expect it to be a bytevector.
(%signature-body, %wrong-signature, %acl): Remove.
(signature): Rename to...
(signature-field): ... this. Add 'bv-or-str' parameter. Change 'str'
parameter to #:version. Add #:public-key parameter. Call
'signature-body' directly. Change domain part of the signature to
'example.gnu.org'.
("not a number", "wrong version number", "valid
narinfo-signature->canonical-sexp"): Use 'signature-field' instead of
'signature' or %SIGNATURE.
(test-error-condition): Add 'message-rx' parameter and honor it.
("corrupt signature data", "unauthorized public key", "invalid
signature"): Adjust accordingly.
(narinfo, %signed-narinfo): Remove.
("query narinfo with invalid hash"): Use '%narinfo' and
'signature-field' instead of 'narinfo' and '%signature'.
("query narinfo signed with authorized key", "query narinfo signed
with unauthorized key", "substitute, invalid hash", "substitute,
unauthorized key"): Likewise.
This commit is contained in:
Ludovic Courtès
parent
491e6de7d6
commit
52f80dfc8a
1 changed files with 61 additions and 69 deletions
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@ -30,8 +30,10 @@ (define-module (test-substitute-binary)
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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-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 assert-valid-signature
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@ -60,21 +62,17 @@ (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 str #:key (public-key %public-key))
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"Return the signature of STR as the base64-encoded body of a narinfo's
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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 (string->utf8 str))
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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 %signature-body
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;; Body of the signature of the word "secret".
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(signature-body "secret"))
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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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@ -83,76 +81,69 @@ (define %wrong-public-key
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)
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)"))
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(define %wrong-signature
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;; 'Signature' field where the public key doesn't match the private key used
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;; to make the signature.
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(let* ((body (string->canonical-sexp
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(utf8->string
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(base64-decode %signature-body))))
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(data (canonical-sexp->string (find-sexp-token body 'data)))
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(sig-val (canonical-sexp->string (find-sexp-token body 'sig-val)))
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(public-key (canonical-sexp->string %wrong-public-key))
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(body* (base64-encode
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(string->utf8
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(string-append "(signature \n" data sig-val
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public-key " )\n")))))
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(string-append "1;irrelevant;" body*)))
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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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(define* (signature str #:optional (body %signature-body))
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"Return the 'Signature' field value with STR as the version part and BODY as
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the actual base64-encoded signature part."
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(string-append str ";irrelevant;" body))
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(define %signature
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;; Signature computed over the word "secret".
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(signature "1" %signature-body))
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(define %acl
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(public-keys->acl (list %public-key)))
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(test-begin "substitute-binary")
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(test-error* "not a number"
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(narinfo-signature->canonical-sexp (signature "not a number")))
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(narinfo-signature->canonical-sexp
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(signature-field "foo" #:version "not a number")))
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(test-error* "wrong version number"
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(narinfo-signature->canonical-sexp (signature "2")))
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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)))
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(canonical-sexp? (narinfo-signature->canonical-sexp (signature-field "foo"))))
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(define-syntax-rule (test-error-condition name pred exp)
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(define-syntax-rule (test-error-condition name pred message-rx exp)
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(test-assert name
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(guard (condition ((pred condition) #t)
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(guard (condition ((pred condition)
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(and (string-match message-rx
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(condition-message condition))
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#t))
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(else #f))
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exp
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#f)))
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;;; XXX: Do we need a better predicate hierarchy for these tests?
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(test-error-condition "corrupt signature data"
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nar-signature-error?
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nar-signature-error? "corrupt"
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(assert-valid-signature (string->canonical-sexp "(foo bar baz)") "irrelevant"
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(open-input-string "irrelevant")
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%acl))
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(public-keys->acl (list %public-key))))
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(test-error-condition "unauthorized public key"
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nar-signature-error?
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(assert-valid-signature (narinfo-signature->canonical-sexp %signature)
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nar-signature-error? "unauthorized"
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(assert-valid-signature (narinfo-signature->canonical-sexp
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(signature-field "foo"))
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"irrelevant"
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(open-input-string "irrelevant")
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(public-keys->acl '())))
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(test-error-condition "invalid signature"
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nar-signature-error?
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(assert-valid-signature (narinfo-signature->canonical-sexp
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%wrong-signature)
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(sha256 (string->utf8 "secret"))
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(open-input-string "irrelevant")
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(public-keys->acl (list %wrong-public-key))))
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nar-signature-error? "invalid signature"
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(let ((message "this is the message that we sign"))
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(assert-valid-signature (narinfo-signature->canonical-sexp
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(signature-field message
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#:public-key %wrong-public-key))
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(sha256 (string->utf8 message))
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(open-input-string "irrelevant")
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(public-keys->acl (list %wrong-public-key)))))
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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: nar/foo
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@ -163,14 +154,6 @@ (define %narinfo
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Deriver: " (%store-prefix) "/foo.drv
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System: mips64el-linux\n"))
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(define (narinfo sig)
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"Return a narinfo with SIG as its 'Signature' field."
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(format #f "~aSignature: ~a~%" %narinfo sig))
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(define %signed-narinfo
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;; Narinfo with a valid signature.
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(narinfo (signature "1" (signature-body %narinfo))))
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(define (call-with-narinfo narinfo thunk)
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"Call THUNK in a context where $GUIX_BINARY_SUBSTITUTE_URL is populated with
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a file for NARINFO."
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@ -205,11 +188,12 @@ (define-syntax-rule (with-narinfo narinfo body ...)
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(test-equal "query narinfo with invalid hash"
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;; The hash of '%signature' is computed over the word "secret", not
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;; '%narinfo'.
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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 (narinfo %signature)
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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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@ -221,7 +205,9 @@ (define-syntax-rule (with-narinfo narinfo body ...)
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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 %signed-narinfo
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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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@ -233,9 +219,11 @@ (define-syntax-rule (with-narinfo narinfo body ...)
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(test-equal "query narinfo signed with unauthorized key"
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"" ; not substitutable
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(with-narinfo (narinfo (signature "1"
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(signature-body %narinfo
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#:public-key %wrong-public-key)))
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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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@ -245,18 +233,21 @@ (define-syntax-rule (with-narinfo narinfo body ...)
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(guix-substitute-binary "--query"))))))))
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(test-error* "substitute, invalid hash"
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;; The hash of '%signature' is computed over the word "secret", not
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;; '%narinfo'.
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(with-narinfo (narinfo %signature)
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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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(guix-substitute-binary "--substitute"
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(string-append (%store-prefix)
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"/aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa-foo")
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"foo")))
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(test-error* "substitute, unauthorized key"
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(with-narinfo (narinfo (signature "1"
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(signature-body %narinfo
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#:public-key %wrong-public-key)))
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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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(guix-substitute-binary "--substitute"
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(string-append (%store-prefix)
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"/aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa-foo")
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@ -269,5 +260,6 @@ (define-syntax-rule (with-narinfo narinfo body ...)
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;;; Local Variables:
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;;; eval: (put 'with-narinfo 'scheme-indent-function 1)
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;;; eval: (put 'test-error-condition 'scheme-indent-function 3)
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;;; eval: (put 'test-error* 'scheme-indent-function 1)
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;;; End:
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