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|
package dkim
import (
"errors"
"io"
"net"
"reflect"
"strings"
"testing"
"time"
)
func newMailStringReader(s string) io.Reader {
return strings.NewReader(strings.Replace(s, "\n", "\r\n", -1))
}
const unsignedMailString = `From: Joe SixPack <joe@football.example.com>
To: Suzie Q <suzie@shopping.example.net>
Subject: Is dinner ready?
Date: Fri, 11 Jul 2003 21:00:37 -0700 (PDT)
Message-ID: <20030712040037.46341.5F8J@football.example.com>
Hi.
We lost the game. Are you hungry yet?
Joe.
`
func TestVerify_unsigned(t *testing.T) {
r := newMailStringReader(unsignedMailString)
verifications, err := Verify(r)
if err != nil {
t.Fatalf("Expected no error while verifying signature, got: %v", err)
} else if len(verifications) != 0 {
t.Fatalf("Expected exactly zero verification, got %v", len(verifications))
}
}
const verifiedMailString = `DKIM-Signature: v=1; a=rsa-sha256; s=brisbane; d=example.com;
c=simple/simple; q=dns/txt; i=joe@football.example.com;
h=Received : From : To : Subject : Date : Message-ID;
bh=2jUSOH9NhtVGCQWNr9BrIAPreKQjO6Sn7XIkfJVOzv8=;
b=AuUoFEfDxTDkHlLXSZEpZj79LICEps6eda7W3deTVFOk4yAUoqOB
4nujc7YopdG5dWLSdNg6xNAZpOPr+kHxt1IrE+NahM6L/LbvaHut
KVdkLLkpVaVVQPzeRDI009SO2Il5Lu7rDNH6mZckBdrIx0orEtZV
4bmp/YzhwvcubU4=;
Received: from client1.football.example.com [192.0.2.1]
by submitserver.example.com with SUBMISSION;
Fri, 11 Jul 2003 21:01:54 -0700 (PDT)
From: Joe SixPack <joe@football.example.com>
To: Suzie Q <suzie@shopping.example.net>
Subject: Is dinner ready?
Date: Fri, 11 Jul 2003 21:00:37 -0700 (PDT)
Message-ID: <20030712040037.46341.5F8J@football.example.com>
Hi.
We lost the game. Are you hungry yet?
Joe.
`
var testVerification = &Verification{
Domain: "example.com",
Identifier: "joe@football.example.com",
HeaderKeys: []string{"Received", "From", "To", "Subject", "Date", "Message-ID"},
}
func TestVerify(t *testing.T) {
r := newMailStringReader(verifiedMailString)
verifications, err := Verify(r)
if err != nil {
t.Fatalf("Expected no error while verifying signature, got: %v", err)
} else if len(verifications) != 1 {
t.Fatalf("Expected exactly one verification, got %v", len(verifications))
}
v := verifications[0]
if !reflect.DeepEqual(testVerification, v) {
t.Errorf("Expected verification to be \n%+v\n but got \n%+v", testVerification, v)
}
}
func TestVerifyWithOption(t *testing.T) {
r := newMailStringReader(verifiedMailString)
option := VerifyOptions{}
verifications, err := VerifyWithOptions(r, &option)
if err != nil {
t.Fatalf("Expected no error while verifying signature, got: %v", err)
} else if len(verifications) != 1 {
t.Fatalf("Expected exactly one verification, got %v", len(verifications))
}
v := verifications[0]
if !reflect.DeepEqual(testVerification, v) {
t.Errorf("Expected verification to be \n%+v\n but got \n%+v", testVerification, v)
}
r = newMailStringReader(verifiedMailString)
option = VerifyOptions{LookupTXT: net.LookupTXT}
verifications, err = VerifyWithOptions(r, &option)
if err != nil {
t.Fatalf("Expected no error while verifying signature, got: %v", err)
} else if len(verifications) != 1 {
t.Fatalf("Expected exactly one verification, got %v", len(verifications))
}
v = verifications[0]
if !reflect.DeepEqual(testVerification, v) {
t.Errorf("Expected verification to be \n%+v\n but got \n%+v", testVerification, v)
}
}
const verifiedRawRSAMailString = `DKIM-Signature: a=rsa-sha256; bh=2jUSOH9NhtVGCQWNr9BrIAPreKQjO6Sn7XIkfJVOzv8=;
c=simple/simple; d=example.com;
h=Received:From:To:Subject:Date:Message-ID; i=joe@football.example.com;
s=newengland; t=1615825284; v=1;
b=Xh4Ujb2wv5x54gXtulCiy4C0e+plRm6pZ4owF+kICpYzs/8WkTVIDBrzhJP0DAYCpnL62T0G
k+0OH8pi/yqETVjKtKk+peMnNvKkut0GeWZMTze0bfq3/JUK3Ln3jTzzpXxrgVnvBxeY9EZIL4g
s4wwFRRKz/1bksZGSjD8uuSU=
Received: from client1.football.example.com [192.0.2.1]
by submitserver.example.com with SUBMISSION;
Fri, 11 Jul 2003 21:01:54 -0700 (PDT)
From: Joe SixPack <joe@football.example.com>
To: Suzie Q <suzie@shopping.example.net>
Subject: Is dinner ready?
Date: Fri, 11 Jul 2003 21:00:37 -0700 (PDT)
Message-ID: <20030712040037.46341.5F8J@football.example.com>
Hi.
We lost the game. Are you hungry yet?
Joe.
`
var testRawRSAVerification = &Verification{
Domain: "example.com",
Identifier: "joe@football.example.com",
HeaderKeys: []string{"Received", "From", "To", "Subject", "Date", "Message-ID"},
Time: time.Unix(1615825284, 0),
}
func TestVerify_rawRSA(t *testing.T) {
r := newMailStringReader(verifiedRawRSAMailString)
verifications, err := Verify(r)
if err != nil {
t.Fatalf("Expected no error while verifying signature, got: %v", err)
} else if len(verifications) != 1 {
t.Fatalf("Expected exactly one verification, got %v", len(verifications))
}
v := verifications[0]
if !reflect.DeepEqual(testRawRSAVerification, v) {
t.Errorf("Expected verification to be \n%+v\n but got \n%+v", testRawRSAVerification, v)
}
}
const verifiedEd25519MailString = `DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed;
d=football.example.com; i=@football.example.com;
q=dns/txt; s=brisbane; t=1528637909; h=from : to :
subject : date : message-id : from : subject : date;
bh=2jUSOH9NhtVGCQWNr9BrIAPreKQjO6Sn7XIkfJVOzv8=;
b=/gCrinpcQOoIfuHNQIbq4pgh9kyIK3AQUdt9OdqQehSwhEIug4D11Bus
Fa3bT3FY5OsU7ZbnKELq+eXdp1Q1Dw==
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
d=football.example.com; i=@football.example.com;
q=dns/txt; s=test; t=1528637909; h=from : to : subject :
date : message-id : from : subject : date;
bh=2jUSOH9NhtVGCQWNr9BrIAPreKQjO6Sn7XIkfJVOzv8=;
b=F45dVWDfMbQDGHJFlXUNB2HKfbCeLRyhDXgFpEL8GwpsRe0IeIixNTe3
DhCVlUrSjV4BwcVcOF6+FF3Zo9Rpo1tFOeS9mPYQTnGdaSGsgeefOsk2Jz
dA+L10TeYt9BgDfQNZtKdN1WO//KgIqXP7OdEFE4LjFYNcUxZQ4FADY+8=
From: Joe SixPack <joe@football.example.com>
To: Suzie Q <suzie@shopping.example.net>
Subject: Is dinner ready?
Date: Fri, 11 Jul 2003 21:00:37 -0700 (PDT)
Message-ID: <20030712040037.46341.5F8J@football.example.com>
Hi.
We lost the game. Are you hungry yet?
Joe.`
var testEd25519Verification = &Verification{
Domain: "football.example.com",
Identifier: "@football.example.com",
HeaderKeys: []string{"from", "to", "subject", "date", "message-id", "from", "subject", "date"},
Time: time.Unix(1528637909, 0),
}
func TestVerify_ed25519(t *testing.T) {
r := newMailStringReader(verifiedEd25519MailString)
verifications, err := Verify(r)
if err != nil {
t.Fatalf("Expected no error while verifying signature, got: %v", err)
} else if len(verifications) != 2 {
t.Fatalf("Expected exactly two verifications, got %v", len(verifications))
}
v := verifications[0]
if !reflect.DeepEqual(testEd25519Verification, v) {
t.Errorf("Expected verification to be \n%+v\n but got \n%+v", testEd25519Verification, v)
}
}
// errorReader reads from r and then returns an arbitrary error.
type errorReader struct {
r io.Reader
err error
}
func (r *errorReader) Read(b []byte) (int, error) {
n, err := r.r.Read(b)
if err == io.EOF {
return n, r.err
}
return n, err
}
func TestVerify_invalid(t *testing.T) {
r := newMailStringReader("asdf")
_, err := Verify(r)
if err == nil {
t.Fatalf("Expected error while verifying signature, got nil")
}
expectedErr := errors.New("expected test error")
r = &errorReader{
r: newMailStringReader(verifiedEd25519MailString),
err: expectedErr,
}
_, err = Verify(r)
if err != expectedErr {
t.Fatalf("Expected error while verifying signature, got: %v", err)
}
}
const tooManySignaturesMailString = `DKIM-Signature: v=1; a=rsa-sha256; s=brisbane; d=example.com;
c=simple/simple; q=dns/txt; i=joe@football.example.com;
h=Received : From : To : Subject : Date : Message-ID;
bh=2jUSOH9NhtVGCQWNr9BrIAPreKQjO6Sn7XIkfJVOzv8=;
b=AuUoFEfDxTDkHlLXSZEpZj79LICEps6eda7W3deTVFOk4yAUoqOB
4nujc7YopdG5dWLSdNg6xNAZpOPr+kHxt1IrE+NahM6L/LbvaHut
KVdkLLkpVaVVQPzeRDI009SO2Il5Lu7rDNH6mZckBdrIx0orEtZV
4bmp/YzhwvcubU4=;
DKIM-Signature: v=1; a=rsa-sha256; s=brisbane; d=example.com;
c=simple/simple; q=dns/txt; i=joe@football.example.com;
h=Received : From : To : Subject : Date : Message-ID;
bh=2jUSOH9NhtVGCQWNr9BrIAPreKQjO6Sn7XIkfJVOzv8=;
b=AuUoFEfDxTDkHlLXSZEpZj79LICEps6eda7W3deTVFOk4yAUoqOB
4nujc7YopdG5dWLSdNg6xNAZpOPr+kHxt1IrE+NahM6L/LbvaHut
KVdkLLkpVaVVQPzeRDI009SO2Il5Lu7rDNH6mZckBdrIx0orEtZV
4bmp/YzhwvcubU4=;
DKIM-Signature: v=1; a=rsa-sha256; s=brisbane; d=example.com;
c=simple/simple; q=dns/txt; i=joe@football.example.com;
h=Received : From : To : Subject : Date : Message-ID;
bh=2jUSOH9NhtVGCQWNr9BrIAPreKQjO6Sn7XIkfJVOzv8=;
b=AuUoFEfDxTDkHlLXSZEpZj79LICEps6eda7W3deTVFOk4yAUoqOB
4nujc7YopdG5dWLSdNg6xNAZpOPr+kHxt1IrE+NahM6L/LbvaHut
KVdkLLkpVaVVQPzeRDI009SO2Il5Lu7rDNH6mZckBdrIx0orEtZV
4bmp/YzhwvcubU4=;
Received: from client1.football.example.com [192.0.2.1]
by submitserver.example.com with SUBMISSION;
Fri, 11 Jul 2003 21:01:54 -0700 (PDT)
From: Joe SixPack <joe@football.example.com>
To: Suzie Q <suzie@shopping.example.net>
Subject: Is dinner ready?
Date: Fri, 11 Jul 2003 21:00:37 -0700 (PDT)
Message-ID: <20030712040037.46341.5F8J@football.example.com>
Hi.
We lost the game. Are you hungry yet?
Joe.
`
func TestVerify_tooManySignatures(t *testing.T) {
r := strings.NewReader(tooManySignaturesMailString)
options := VerifyOptions{MaxVerifications: 2}
verifs, err := VerifyWithOptions(r, &options)
if err != ErrTooManySignatures {
t.Fatalf("Expected ErrTooManySignatures, got %v", err)
}
if len(verifs) != options.MaxVerifications {
t.Fatalf("Expected %v verifications, got %v", options.MaxVerifications, len(verifs))
}
}
|
