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dkim_test.go
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dkim_test.go
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package dkim
import (
//"fmt"
"crypto/rsa"
"crypto/x509"
"encoding/pem"
"net"
"testing"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
)
const (
privKey = `-----BEGIN RSA PRIVATE KEY-----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-----END RSA PRIVATE KEY-----`
pubKey = `MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDNUXO+Qsl1tw+GjrqFajz0ERSE
Us1FHSL/+udZRWn1Atw8gz0+tcGqhWChBDeU9gY5sKLEAZnX3FjC/T/IbqeiSM68
kS5vLkzRI84eiJrm3+IieUqIIicsO+WYxQs+JgVx5XhpPjX4SQjHtwEC2xKkWnEv
+VPgO1JWdooURcSC6QIDAQAB`
domain = "tmail.io"
selector = "test"
)
func privKeyRSA(tb testing.TB) *rsa.PrivateKey {
block, rest := pem.Decode([]byte(privKey))
require.NotNil(tb, block)
require.Empty(tb, rest)
key, err := x509.ParsePKCS1PrivateKey(block.Bytes)
require.NoError(tb, err)
return key
}
var emailBase = "Received: (qmail 28277 invoked from network); 1 May 2015 09:43:37 -0000" + CRLF +
"Received: (qmail 21323 invoked from network); 1 May 2015 09:48:39 -0000" + CRLF +
"Received: from mail483.ha.ovh.net (b6.ovh.net [213.186.33.56])" + CRLF +
" by mo51.mail-out.ovh.net (Postfix) with SMTP id A6E22FF8934" + CRLF +
" for <toorop@toorop.fr>; Mon, 4 May 2015 14:00:47 +0200 (CEST)" + CRLF +
"MIME-Version: 1.0" + CRLF +
"Date: Fri, 1 May 2015 11:48:37 +0200" + CRLF +
"Message-ID: <CADu37kTXBeNkJdXc4bSF8DbJnXmNjkLbnswK6GzG_2yn7U7P6w@tmail.io>" + CRLF +
"Subject: Test DKIM" + CRLF +
"From: =?UTF-8?Q?St=C3=A9phane_Depierrepont?= <toorop@tmail.io>" + CRLF +
"To: =?UTF-8?Q?St=C3=A9phane_Depierrepont?= <toorop@toorop.fr>" + CRLF +
"Content-Type: text/plain; charset=UTF-8" + CRLF + CRLF +
"Hello world" + CRLF +
"line with trailing space " + CRLF +
"line with space " + CRLF +
"-- " + CRLF +
"Toorop" + CRLF + CRLF + CRLF + CRLF + CRLF + CRLF
var emailBaseNoFrom = "Received: (qmail 28277 invoked from network); 1 May 2015 09:43:37 -0000" + CRLF +
"Received: (qmail 21323 invoked from network); 1 May 2015 09:48:39 -0000" + CRLF +
"Received: from mail483.ha.ovh.net (b6.ovh.net [213.186.33.56])" + CRLF +
" by mo51.mail-out.ovh.net (Postfix) with SMTP id A6E22FF8934" + CRLF +
" for <toorop@toorop.fr>; Mon, 4 May 2015 14:00:47 +0200 (CEST)" + CRLF +
"MIME-Version: 1.0" + CRLF +
"Date: Fri, 1 May 2015 11:48:37 +0200" + CRLF +
"Message-ID: <CADu37kTXBeNkJdXc4bSF8DbJnXmNjkLbnswK6GzG_2yn7U7P6w@tmail.io>" + CRLF +
"Subject: Test DKIM" + CRLF +
"To: =?UTF-8?Q?St=C3=A9phane_Depierrepont?= <toorop@toorop.fr>" + CRLF +
"Content-Type: text/plain; charset=UTF-8" + CRLF + CRLF +
"Hello world" + CRLF +
"line with trailing space " + CRLF +
"line with space " + CRLF +
"-- " + CRLF +
"Toorop" + CRLF + CRLF + CRLF + CRLF + CRLF + CRLF
var headerSimple = "From: =?UTF-8?Q?St=C3=A9phane_Depierrepont?= <toorop@tmail.io>" + CRLF +
"Date: Fri, 1 May 2015 11:48:37 +0200" + CRLF +
"MIME-Version: 1.0" + CRLF +
"Received: from mail483.ha.ovh.net (b6.ovh.net [213.186.33.56])" + CRLF +
" by mo51.mail-out.ovh.net (Postfix) with SMTP id A6E22FF8934" + CRLF +
" for <toorop@toorop.fr>; Mon, 4 May 2015 14:00:47 +0200 (CEST)" + CRLF +
"Received: (qmail 21323 invoked from network); 1 May 2015 09:48:39 -0000" + CRLF
var headerRelaxed = "from:=?UTF-8?Q?St=C3=A9phane_Depierrepont?= <toorop@tmail.io>" + CRLF +
"date:Fri, 1 May 2015 11:48:37 +0200" + CRLF +
"mime-version:1.0" + CRLF +
"received:from mail483.ha.ovh.net (b6.ovh.net [213.186.33.56]) by mo51.mail-out.ovh.net (Postfix) with SMTP id A6E22FF8934 for <toorop@toorop.fr>; Mon, 4 May 2015 14:00:47 +0200 (CEST)" + CRLF +
"received:(qmail 21323 invoked from network); 1 May 2015 09:48:39 -0000" + CRLF
var bodySimple = "Hello world" + CRLF +
"line with trailing space " + CRLF +
"line with space " + CRLF +
"-- " + CRLF +
"Toorop" + CRLF
var bodyRelaxed = "Hello world" + CRLF +
"line with trailing space" + CRLF +
"line with space" + CRLF +
"--" + CRLF +
"Toorop" + CRLF
var signedRelaxedRelaxed = "DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed;" + CRLF +
" s=test; d=tmail.io; h=from:date:mime-version:received:received;" + CRLF +
" bh=4pCY+Pp2c/Wr8fDfBDWKpx3DDsr0CJfSP9H1KYxm5bA=;" + CRLF +
" b=o0eE20jd8jYqkyxP5rqbfcoUABWZyfrL+l3e1lC0Z+b1Azyrdv+UMmx8L5F57Rhya1SNG2" + CRLF +
" 9FnMUTwq+u1PmOmB7NwfTq5UCS9UR8wrNffI1mLUsBPFtv+jZtnHzdmR9aCo2HPfBBALC8" + CRLF +
" jEhQcvm/RaP0aiYJtisLJ86S3k0P1WU=" + CRLF + emailBase
var signedRelaxedRelaxedLength = "DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed;" + CRLF +
" s=test; d=tmail.io; l=5; h=from:date:mime-version:received:received;" + CRLF +
" bh=GF+NsyJx/iX1Yab8k4suJkMG7DBO2lGAB9F2SCY4GWk=;" + CRLF +
" b=byhiFWd0lAM1sqD1tl8S1DZtKNqgiEZp8jrGds6RRydnZkdX9rCPeL0Q5MYWBQ/JmQrml5" + CRLF +
" pIghLwl/EshDBmNy65O6qO8pSSGgZmM3T7SRLMloex8bnrBJ4KSYcHV46639gVEWcBOKW0" + CRLF +
" h1djZu2jaTuxGeJzlFVtw3Arf2B93cc=" + CRLF + emailBase
var signedSimpleSimple = "DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=simple/simple;" + CRLF +
" s=test; d=tmail.io; h=from:date:mime-version:received:received;" + CRLF +
" bh=ZrMyJ01ZlWHPSzskR7A+4CeBDAd0m8CPny4m15ablao=;" + CRLF +
" b=nzkqVMlEBL+6m/1AtlFzGV2tHjvfNwFmz9kUDNqphBNSvguv/8KAdqsVheBudJBDHNPrjr" + CRLF +
" +N57+atXBQX/jng2WAlI5wpQb1TlxLfm8b7SyS1Z7WwSOI0MqaLMhIss4QEVsevaTF1d/1" + CRLF +
" WcFzOPxn66nnn+CRKaz553tjIn1GeFQ=" + CRLF + emailBase
var signedSimpleSimpleLength = "DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=simple/simple;" + CRLF +
" s=test; d=tmail.io; l=5; h=from:subject:date:message-id;" + CRLF +
" bh=GF+NsyJx/iX1Yab8k4suJkMG7DBO2lGAB9F2SCY4GWk=;" + CRLF +
" b=P4cX4WxnSytfsQ3skg3fYIRljleh2iDJidlr/GPfA4S8pTPNZj4SPhB7CJ6OcbSWwJ6Yer" + CRLF +
" rHGEmCSEGHJPQm+P12iujJlQ784i34JsBvMC5YAMIQ0DHTNhJRHEyShg1I0B3tqArogdap" + CRLF +
" qwWLUSFEhPTXglZVhcHIvYZA9X38iF4=" + CRLF + emailBase
var signedNoFrom = "DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=simple/simple;" + CRLF +
" s=test; d=tmail.io; h=from:date:mime-version:received:received;" + CRLF +
" bh=GF+NsyJx/iX1Yab8k4suJkMG7DBO2lGAB9F2SCY4GWk=;" + CRLF +
" b=SoEhlu1Emm2ASqo8jMhz6FIf2nNHt3ouY4Av/pFFEkQ048RqUFP437ap7RbtL2wh0N3Kkm" + CRLF +
" AKF2TcTLZ++1nalq+djU+/aP4KYQd4RWWFBjkxDzvCH4bvB1M5AGp4Qz9ldmdMQBWOvvSp" + CRLF +
" DIpJW4XNA/uqLSswtjCYbJsSg9Ywv1o=" + CRLF + emailBaseNoFrom
var signedMissingFlag = "DKIM-Signature: v=1; q=dns/txt; c=simple/simple;" + CRLF +
" s=test; d=tmail.io; l=5; h=from:date:mime-version:received:received;" + CRLF +
" bh=GF+NsyJx/iX1Yab8k4suJkMG7DBO2lGAB9F2SCY4GWk=;" + CRLF +
" b=SoEhlu1Emm2ASqo8jMhz6FIf2nNHt3ouY4Av/pFFEkQ048RqUFP437ap7RbtL2wh0N3Kkm" + CRLF +
" AKF2TcTLZ++1nalq+djU+/aP4KYQd4RWWFBjkxDzvCH4bvB1M5AGp4Qz9ldmdMQBWOvvSp" + CRLF +
" DIpJW4XNA/uqLSswtjCYbJsSg9Ywv1o=" + CRLF + emailBase
var signedBadAFlag = "DKIM-Signature: v=1; a=rsashasha sfds; q=dns/txt; c=simple/simple;" + CRLF +
" s=test; d=tmail.io; l=5; h=from:date:mime-version:received:received;" + CRLF +
" bh=GF+NsyJx/iX1Yab8k4suJkMG7DBO2lGAB9F2SCY4GWk=;" + CRLF +
" b=SoEhlu1Emm2ASqo8jMhz6FIf2nNHt3ouY4Av/pFFEkQ048RqUFP437ap7RbtL2wh0N3Kkm" + CRLF +
" AKF2TcTLZ++1nalq+djU+/aP4KYQd4RWWFBjkxDzvCH4bvB1M5AGp4Qz9ldmdMQBWOvvSp" + CRLF +
" DIpJW4XNA/uqLSswtjCYbJsSg9Ywv1o=" + CRLF + emailBase
var signedBadAlgo = "DKIM-Signature: v=1; a=rsa-shasha; q=dns/txt; c=simple/simple;" + CRLF +
" s=test; d=tmail.io; l=5; h=from:date:mime-version:received:received;" + CRLF +
" bh=GF+NsyJx/iX1Yab8k4suJkMG7DBO2lGAB9F2SCY4GWk=;" + CRLF +
" b=SoEhlu1Emm2ASqo8jMhz6FIf2nNHt3ouY4Av/pFFEkQ048RqUFP437ap7RbtL2wh0N3Kkm" + CRLF +
" AKF2TcTLZ++1nalq+djU+/aP4KYQd4RWWFBjkxDzvCH4bvB1M5AGp4Qz9ldmdMQBWOvvSp" + CRLF +
" DIpJW4XNA/uqLSswtjCYbJsSg9Ywv1o=" + CRLF + emailBase
var signedDouble = "DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=simple/simple;" + CRLF +
" s=test; d=tmail.io; l=5; h=from:date:mime-version:received:received;" + CRLF +
" bh=GF+NsyJx/iX1Yab8k4suJkMG7DBO2lGAB9F2SCY4GWk=;" + CRLF +
" b=SoEhlu1Emm2ASqo8jMhz6FIf2nNHt3ouY4Av/pFFEkQ048RqUFP437ap7RbtL2wh0N3Kkm" + CRLF +
" AKF2TcTLZ++1nalq+djU+/aP4KYQd4RWWFBjkxDzvCH4bvB1M5AGp4Qz9ldmdMQBWOvvSp" + CRLF +
" DIpJW4XNA/uqLSswtjCYbJsSg9Ywv1o=" + CRLF +
"DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed;" + CRLF +
" s=test; d=tmail.io; l=5; h=from:date:mime-version:received:received;" + CRLF +
" bh=GF+NsyJx/iX1Yab8k4suJkMG7DBO2lGAB9F2SCY4GWk=;" + CRLF +
" b=byhiFWd0lAM1sqD1tl8S1DZtKNqgiEZp8jrGds6RRydnZkdX9rCPeL0Q5MYWBQ/JmQrml5" + CRLF +
" pIghLwl/EshDBmNy65O6qO8pSSGgZmM3T7SRLMloex8bnrBJ4KSYcHV46639gVEWcBOKW0" + CRLF +
" h1djZu2jaTuxGeJzlFVtw3Arf2B93cc=" + CRLF + emailBase
var fromGmail = "Return-Path: toorop@gmail.com" + CRLF +
"Delivered-To: toorop@tmail.io" + CRLF +
"Received: tmail deliverd local d9ae3ac7c238a50a6e007d207337752eb04038ff; 21 May 2015 19:47:54 +0200" + CRLF +
"X-Env-From: toorop@gmail.com" + CRLF +
"Received: from 209.85.217.176 (mail-lb0-f176.google.com.) (mail-lb0-f176.google.com)" + CRLF +
" by 5.196.15.145 (mail.tmail.io.) with ESMTPS; 21 May 2015 19:47:54 +0200; tmail 0.0.8" + CRLF +
" ; 8008e7eae6f168de88db072ead2b34d0f9194cc5" + CRLF +
"Authentication-Results: dkim=permfail body hash did not verify" + CRLF +
"Received: by lbbqq2 with SMTP id qq2so23551469lbb.3" + CRLF +
" for <toorop@tmail.io>; Thu, 21 May 2015 10:43:42 -0700 (PDT)" + CRLF +
"DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;" + CRLF +
" d=gmail.com; s=20120113;" + CRLF +
" h=mime-version:date:message-id:subject:from:to:content-type;" + CRLF +
" bh=pwO8HiXlNND4gOHL7bTlAtJFqYruIH1x8q3dAqEw138=;" + CRLF +
" b=lh5rCv0Y2uh23DLUv+YsPZEmJMkhxlVRG+aeCmtJ5BpXTbSHldmNv1vbSegCx0LY9K" + CRLF +
" l0AEGrpce6YgBk5qRphffEOhANKEkrLesMUyI3yc9JG2J6R19mJ/NyDkT5USZZuI8DOp" + CRLF +
" GkRQSIPU4lrj3U27pr6+8I2lANJfINkqbkbBb69068/aPYl2DUMP5SPCFNwB01LHWKqI" + CRLF +
" srRDhqRYnAql+PZJVbzrue2HwBflr4ycDzhfZ+Q5BxQZt+TJtzkCUHTGtx5z9JctR93E" + CRLF +
" K5hUpKBN6w6GEbj1HDiMsYZOICx3XNDkny8HhFmU0nPjwbHN2C8HslOGZtDPeZWJypSG" + CRLF +
" Wuig==" + CRLF +
"MIME-Version: 1.0" + CRLF +
"X-Received: by 10.152.206.103 with SMTP id ln7mr3235525lac.40.1432230222503;" + CRLF +
" Thu, 21 May 2015 10:43:42 -0700 (PDT)" + CRLF +
"Received: by 10.112.162.129 with HTTP; Thu, 21 May 2015 10:43:42 -0700 (PDT)" + CRLF +
"Date: Thu, 21 May 2015 19:43:42 +0200" + CRLF +
"Message-ID: <CADu37kSVY5ZSq9MGjw3yXfn1eNF-hMHjWJyb87JqS4Z79Zksww@mail.gmail.com>" + CRLF +
"Subject: Test smtpdData" + CRLF +
"From: =?UTF-8?Q?St=C3=A9phane_Depierrepont?= <toorop@gmail.com>" + CRLF +
"To: toorop@tmail.io" + CRLF +
"Content-Type: text/plain; charset=UTF-8" + CRLF + CRLF +
"Alors ?" + CRLF + CRLF +
"-- " + CRLF +
"Toorop" + CRLF +
"http://www.protecmail.com" + CRLF + CRLF + CRLF
var missingHeaderMail = "Received: tmail deliverd remote 439903a23facd153908f3e17fb487962d01f4b44; 02 Jun 2015 10:00:24 +0000" + CRLF +
"X-Env-From: toorop@toorop.fr" + CRLF +
"Received: from 192.168.0.2 (no reverse) by 192.168.0.46 (no reverse) whith" + CRLF +
" SMTP; 02 Jun 2015 10:00:23 +0000; tmail 0.0.8;" + CRLF +
" d3c348615ef29692ca8bdacb40d0e147c977579c" + CRLF +
"Message-ID: <1433239223.d3c348615ef29692ca8bdacb40d0e147c977579c@toorop.fr>" + CRLF +
"Date: Thu, 21 May 2015 19:43:42 +0200" + CRLF +
"Subject: test" + CRLF + CRLF +
"test"
func Test_NewSigOptions(t *testing.T) {
options := NewSigOptions()
assert.Equal(t, "rsa-sha256", options.Algo)
assert.Equal(t, "simple/simple", options.Canonicalization)
}
func Test_SignConfig(t *testing.T) {
email := []byte(emailBase)
emailToTest := append([]byte(nil), email...)
options := NewSigOptions()
err := Sign(&emailToTest, options)
assert.NotNil(t, err)
// && err No private key
assert.EqualError(t, err, ErrSignPrivateKeyRequired.Error())
options.PrivateKey = []byte(privKey)
emailToTest = append([]byte(nil), email...)
err = Sign(&emailToTest, options)
// Domain
assert.EqualError(t, err, ErrSignDomainRequired.Error())
options.Domain = "toorop.fr"
emailToTest = append([]byte(nil), email...)
err = Sign(&emailToTest, options)
// Selector
assert.Error(t, err, ErrSignSelectorRequired.Error())
options.Selector = "default"
emailToTest = append([]byte(nil), email...)
err = Sign(&emailToTest, options)
assert.NoError(t, err)
// Canonicalization
options.Canonicalization = "simple/relaxed/simple"
emailToTest = append([]byte(nil), email...)
err = Sign(&emailToTest, options)
assert.EqualError(t, err, ErrSignBadCanonicalization.Error())
options.Canonicalization = "simple/relax"
emailToTest = append([]byte(nil), email...)
err = Sign(&emailToTest, options)
assert.EqualError(t, err, ErrSignBadCanonicalization.Error())
options.Canonicalization = "relaxed"
emailToTest = append([]byte(nil), email...)
err = Sign(&emailToTest, options)
assert.NoError(t, err)
options.Canonicalization = "SiMple/relAxed"
emailToTest = append([]byte(nil), email...)
err = Sign(&emailToTest, options)
assert.NoError(t, err)
// header
options.Headers = []string{"toto"}
emailToTest = append([]byte(nil), email...)
err = Sign(&emailToTest, options)
assert.EqualError(t, err, ErrSignHeaderShouldContainsFrom.Error())
options.Headers = []string{"To", "From"}
emailToTest = append([]byte(nil), email...)
err = Sign(&emailToTest, options)
assert.NoError(t, err)
}
func Test_canonicalize(t *testing.T) {
email := []byte(emailBase)
emailToTest := append([]byte(nil), email...)
options := NewSigOptions()
options.Headers = []string{"from", "date", "mime-version", "received", "received", "In-Reply-To"}
// simple/simple
options.Canonicalization = "simple/simple"
header, body, err := canonicalize(&emailToTest, options.Canonicalization, options.Headers)
assert.NoError(t, err)
assert.Equal(t, []byte(headerSimple), header)
assert.Equal(t, []byte(bodySimple), body)
// relaxed/relaxed
emailToTest = append([]byte(nil), email...)
options.Canonicalization = "relaxed/relaxed"
header, body, err = canonicalize(&emailToTest, options.Canonicalization, options.Headers)
assert.NoError(t, err)
assert.Equal(t, []byte(headerRelaxed), header)
assert.Equal(t, []byte(bodyRelaxed), body)
}
func Test_Sign(t *testing.T) {
email := []byte(emailBase)
emailRelaxed := append([]byte(nil), email...)
options := NewSigOptions()
options.PrivateKey = []byte(privKey)
options.Domain = domain
options.Selector = selector
//options.SignatureExpireIn = 3600
options.Headers = []string{"from", "date", "mime-version", "received", "received"}
options.AddSignatureTimestamp = false
options.Canonicalization = "relaxed/relaxed"
err := Sign(&emailRelaxed, options)
assert.NoError(t, err)
assert.Equal(t, []byte(signedRelaxedRelaxed), emailRelaxed)
options.BodyLength = 5
emailRelaxed = append([]byte(nil), email...)
err = Sign(&emailRelaxed, options)
assert.NoError(t, err)
assert.Equal(t, []byte(signedRelaxedRelaxedLength), emailRelaxed)
options.BodyLength = 0
options.Canonicalization = "simple/simple"
emailSimple := append([]byte(nil), email...)
err = Sign(&emailSimple, options)
assert.Equal(t, []byte(signedSimpleSimple), emailSimple)
options.Headers = []string{"from", "subject", "date", "message-id"}
memail := []byte(missingHeaderMail)
err = Sign(&memail, options)
assert.NoError(t, err)
options.BodyLength = 5
options.Canonicalization = "simple/simple"
emailSimple = append([]byte(nil), email...)
err = Sign(&emailSimple, options)
assert.Equal(t, []byte(signedSimpleSimpleLength), emailSimple)
}
func Test_Verify(t *testing.T) {
resolveTXT := DNSOptLookupTXT(func(name string) ([]string, error) {
switch name {
case selector + "._domainkey." + domain:
return []string{"v=DKIM1; t=y; p=" + pubKey}, nil
// case "TODO._domainkey.gmail.com":
// return []string{"v=DKIM1; p="}, nil
default:
return net.LookupTXT(name)
}
})
// no DKIM header
email := []byte(emailBase)
status, err := Verify(&email, resolveTXT)
assert.Equal(t, NOTSIGNED, status)
assert.Equal(t, ErrDkimHeaderNotFound, err)
// No From
email = []byte(signedNoFrom)
status, err = Verify(&email, resolveTXT)
assert.Equal(t, ErrVerifyBodyHash, err)
assert.Equal(t, TESTINGPERMFAIL, status) // cause we use dkheader of the "with from" email
// missing mandatory 'a' flag
email = []byte(signedMissingFlag)
status, err = Verify(&email, resolveTXT)
assert.Error(t, err)
assert.Equal(t, PERMFAIL, status)
assert.Equal(t, ErrDkimHeaderMissingRequiredTag, err)
// missing bad algo
email = []byte(signedBadAlgo)
status, err = Verify(&email, resolveTXT)
assert.Equal(t, PERMFAIL, status)
assert.Equal(t, ErrSignBadAlgo, err)
// bad a flag
email = []byte(signedBadAFlag)
status, err = Verify(&email, resolveTXT)
assert.Equal(t, PERMFAIL, status)
assert.Equal(t, ErrSignBadAlgo, err)
// relaxed
email = []byte(signedRelaxedRelaxedLength)
status, err = Verify(&email, resolveTXT)
assert.NoError(t, err)
assert.Equal(t, SUCCESS, status)
// simple
email = []byte(signedSimpleSimpleLength)
status, err = Verify(&email, resolveTXT)
assert.NoError(t, err)
assert.Equal(t, SUCCESS, status)
// gmail
// TODO:
// Google removed this DNS record some time ago. Someone will have to send an email they're
// OK with being publicly available, replace the value of the fromGmail var with that, then grab
// the DNS record indicated in the DKIM signature and update the resolveTXT function to return
// it when asked. Then this should work.
// email = []byte(fromGmail)
// status, err = Verify(&email, resolveTXT)
// assert.NoError(t, err)
// assert.Equal(t, SUCCESS, status)
}