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// Copyright (C) 2017 Space Monkey, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// The following tests are meant to assert conformance to results in
// Appendix C of the specification are are not exhaustive. Finer grained tests
// can be found elsewhere in the package.
package
httpsig
import
(
"crypto/rsa"
"crypto/x509"
"encoding/pem"
"fmt"
"net/http"
"reflect"
"runtime/debug"
"strings"
"testing"
)
var
(
privKey
=
`-----BEGIN RSA PRIVATE KEY-----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-----END RSA PRIVATE KEY-----`
)
func
TestDate
(
t
*
testing.
T
) {
test
:=
NewTest
(
t
)
signer
:=
NewRSASHA256Signer
(
"Test"
,
test
.
PrivateKey
, []
string
{
"date"
})
verifier
:=
NewVerifier
(
test
)
req
:=
test
.
NewRequest
()
test
.
AssertNoError
(
signer
.
Sign
(
req
))
// headers should not be present in the signature params since we specified
// nil in the constructor. ["Date"] is default header list.
params
:=
getParamsFromAuthHeader
(
req
)
test
.
AssertNotNil
(
params
)
test
.
AssertStringsEqual
(
params
.
Headers
, []
string
{})
// Modify the request host, method, and path, and drop all headers but the date
// and authorization header and assert it still verifies.
req
.
Method
=
"FOO"
req
.
Host
=
"BAR"
req
.
URL
.
Path
=
"BAZ"
req
.
Header
=
trimHeader
(
req
.
Header
,
"Authorization"
,
"Date"
)
test
.
AssertNoError
(
verifier
.
Verify
(
req
))
// Now modify the date and assert verification fails
req
.
Header
.
Set
(
"Date"
,
"stuff"
)
test
.
AssertAnyError
(
verifier
.
Verify
(
req
))
}
func
TestRequestTargetAndHost
(
t
*
testing.
T
) {
test
:=
NewTest
(
t
)
headers
:=
[]
string
{
"(request-target)"
,
"host"
,
"date"
}
signer
:=
NewRSASHA256Signer
(
"Test"
,
test
.
PrivateKey
,
headers
)
verifier
:=
NewVerifier
(
test
)
req
:=
test
.
NewRequest
()
test
.
AssertNoError
(
signer
.
Sign
(
req
))
// Make sure the right params exist
params
:=
getParamsFromAuthHeader
(
req
)
test
.
AssertNotNil
(
params
)
test
.
AssertStringsEqual
(
params
.
Headers
,
headers
)
// Drop all headers but Date and Authorization
req
.
Header
=
trimHeader
(
req
.
Header
,
"Authorization"
,
"Date"
)
// Make sure it verifies.
test
.
AssertNoError
(
verifier
.
Verify
(
req
))
// swap the method and see it fail
orig_method
:=
req
.
Method
req
.
Method
=
"blah"
test
.
AssertAnyError
(
verifier
.
Verify
(
req
))
req
.
Method
=
orig_method
// swap the path and see it fail
orig_path
:=
req
.
URL
.
Path
req
.
URL
.
Path
=
"blah"
test
.
AssertAnyError
(
verifier
.
Verify
(
req
))
req
.
URL
.
Path
=
orig_path
// swap the host and see it fail
orig_host
:=
req
.
Host
req
.
Host
=
"blah"
test
.
AssertAnyError
(
verifier
.
Verify
(
req
))
req
.
Host
=
orig_host
}
/////////////////////////////////////////////////////////////////////////////
// Helpers
/////////////////////////////////////////////////////////////////////////////
func
trimHeader
(
header
http.
Header
,
keepers
...
string
) http.
Header
{
keeper_set
:=
map
[
string
]
bool
{}
for
_
,
keeper
:=
range
keepers
{
keeper_set
[
http
.
CanonicalHeaderKey
(
keeper
)]
=
true
}
for
key
:=
range
header
{
if
keeper_set
[
http
.
CanonicalHeaderKey
(
key
)] {
continue
}
delete
(
header
,
key
)
}
return
header
}
type
Test
struct
{
tb
testing.
TB
KeyGetter
PrivateKey
*
rsa.
PrivateKey
}
func
NewTest
(
tb
testing.
TB
)
*
Test
{
block
,
_
:=
pem
.
Decode
([]
byte
(
privKey
))
if
block
==
nil
{
tb
.
Fatalf
(
"test setup failure: malformed PEM on private key"
)
}
key
,
err
:=
x509
.
ParsePKCS1PrivateKey
(
block
.
Bytes
)
if
err
!=
nil
{
tb
.
Fatal
(
err
)
}
keystore
:=
NewMemoryKeyStore
()
keystore
.
SetKey
(
"Test"
,
key
)
return
&
Test
{
tb
:
tb
,
KeyGetter
:
keystore
,
PrivateKey
:
key
,
}
}
func
(
t
*
Test
)
NewRequest
()
*
http.
Request
{
req
,
err
:=
http
.
NewRequest
(
"POST"
,
"http://example.com/foo"
,
strings
.
NewReader
(
`{"hello": "world"}`
))
t
.
AssertNoError
(
err
)
req
.
Header
.
Set
(
"Date"
,
"Thu, 05 Jan 2014 21:31:40 GMT"
)
req
.
Header
.
Set
(
"Content-Type"
,
"application/json"
)
req
.
Header
.
Set
(
"Digest"
,
"SHA-256=X48E9qOokqqrvdts8nOJRJN3OWDUoyWxBf7kbu9DBPE="
)
return
req
}
func
(
t
*
Test
)
Fatal
(
msg
interface
{}) {
t
.
tb
.
Fatalf
(
"
\n
FATAL:
\n
%v
\n
STACK:
\n
%s"
, []
interface
{}{
msg
,
string
(
debug
.
Stack
())}
...
)
}
func
(
t
*
Test
)
Fatalf
(
format
string
,
args
...
interface
{}) {
t
.
Fatal
(
fmt
.
Sprintf
(
format
,
args
...
))
}
func
(
t
*
Test
)
AssertNotNil
(
v
interface
{}) {
if
v
==
nil
{
t
.
Fatalf
(
"expected nil; got %+v"
,
v
)
}
}
func
(
t
*
Test
)
AssertIntEqual
(
a
,
b
int
) {
if
a
!=
b
{
t
.
Fatalf
(
"expected %d == %d, but nope"
,
a
,
b
)
}
}
func
(
t
*
Test
)
AssertStringEqual
(
a
,
b
string
) {
if
a
!=
b
{
t
.
Fatalf
(
"expected %q == %q, but nope"
,
a
,
b
)
}
}
func
(
t
*
Test
)
AssertStringsEqual
(
a
,
b
[]
string
) {
if
a
==
nil
{
a
=
[]
string
{}
}
if
b
==
nil
{
b
=
[]
string
{}
}
if
!
reflect
.
DeepEqual
(
a
,
b
) {
t
.
Fatalf
(
"expected %q == %q, but nope"
,
a
,
b
)
}
}
func
(
t
*
Test
)
AssertNoError
(
err
error
) {
if
err
!=
nil
{
t
.
Fatal
(
err
)
}
}
func
(
t
*
Test
)
AssertAnyError
(
err
error
) {
if
err
==
nil
{
t
.
Fatal
(
"expected error"
)
}
}
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