mirror of
https://github.com/mjl-/mox.git
synced 2024-12-25 16:03:48 +03:00
9c5d234162
Squashed commit of the following: commit11c25d727fAuthor: Laurent Meunier <laurent@deltalima.net> Date: Sun Mar 31 12:37:09 2024 +0200 Fix style issue commitc075a8cd8bAuthor: Laurent Meunier <laurent@deltalima.net> Date: Sun Mar 31 12:35:04 2024 +0200 Also check smtputf8 for submitted messages or when in pedantic mode commitc02328f881Author: Laurent Meunier <laurent@deltalima.net> Date: Sun Mar 31 12:33:20 2024 +0200 Calls to `newParser` should use `c.smtputf8` commita0bbd13afcAuthor: Laurent Meunier <laurent@deltalima.net> Date: Sun Mar 31 12:32:12 2024 +0200 Improve SMTPUTF8 tests commit08735690f3Author: Laurent Meunier <laurent@deltalima.net> Date: Sat Mar 30 17:22:33 2024 +0100 do earlier smtputf8-check commit3484651691Author: Laurent Meunier <laurent@deltalima.net> Date: Thu Mar 28 17:47:11 2024 +0100 do not require the SMTPUTF8 extension when not needed fix #145
85 lines
2.3 KiB
Go
85 lines
2.3 KiB
Go
package dmarc_test
|
|
|
|
import (
|
|
"context"
|
|
"log"
|
|
"log/slog"
|
|
"net"
|
|
"strings"
|
|
|
|
"github.com/mjl-/mox/dkim"
|
|
"github.com/mjl-/mox/dmarc"
|
|
"github.com/mjl-/mox/dns"
|
|
"github.com/mjl-/mox/message"
|
|
"github.com/mjl-/mox/spf"
|
|
)
|
|
|
|
func ExampleLookup() {
|
|
ctx := context.Background()
|
|
resolver := dns.StrictResolver{}
|
|
msgFrom, err := dns.ParseDomain("sub.example.com")
|
|
if err != nil {
|
|
log.Fatalf("parsing from domain: %v", err)
|
|
}
|
|
|
|
// Lookup DMARC DNS record for domain.
|
|
status, domain, record, txt, authentic, err := dmarc.Lookup(ctx, slog.Default(), resolver, msgFrom)
|
|
if err != nil {
|
|
log.Fatalf("dmarc lookup: %v", err)
|
|
}
|
|
|
|
log.Printf("status %s, domain %s, record %v, txt %q, dnssec %v", status, domain, record, txt, authentic)
|
|
}
|
|
|
|
func ExampleVerify() {
|
|
ctx := context.Background()
|
|
resolver := dns.StrictResolver{}
|
|
|
|
// Message to verify.
|
|
msg := strings.NewReader("From: <sender@example.com>\r\nMore: headers\r\n\r\nBody\r\n")
|
|
msgFrom, _, _, err := message.From(slog.Default(), true, msg, nil)
|
|
if err != nil {
|
|
log.Fatalf("parsing message for from header: %v", err)
|
|
}
|
|
|
|
// Verify SPF, for use with DMARC.
|
|
args := spf.Args{
|
|
RemoteIP: net.ParseIP("10.11.12.13"),
|
|
MailFromDomain: dns.Domain{ASCII: "sub.example.com"},
|
|
}
|
|
spfReceived, spfDomain, _, _, err := spf.Verify(ctx, slog.Default(), resolver, args)
|
|
if err != nil {
|
|
log.Printf("verifying spf: %v", err)
|
|
}
|
|
|
|
// Verify DKIM-Signature headers, for use with DMARC.
|
|
smtputf8 := false
|
|
ignoreTestMode := false
|
|
dkimResults, err := dkim.Verify(ctx, slog.Default(), resolver, smtputf8, dkim.DefaultPolicy, msg, ignoreTestMode)
|
|
if err != nil {
|
|
log.Printf("verifying dkim: %v", err)
|
|
}
|
|
|
|
// Verify DMARC, based on DKIM and SPF results.
|
|
applyRandomPercentage := true
|
|
useResult, result := dmarc.Verify(ctx, slog.Default(), resolver, msgFrom.Domain, dkimResults, spfReceived.Result, &spfDomain, applyRandomPercentage)
|
|
|
|
// Print results.
|
|
log.Printf("dmarc status: %s", result.Status)
|
|
log.Printf("use result: %v", useResult)
|
|
if useResult && result.Reject {
|
|
log.Printf("should reject message")
|
|
}
|
|
log.Printf("result: %#v", result)
|
|
}
|
|
|
|
func ExampleParseRecord() {
|
|
txt := "v=DMARC1; p=reject; rua=mailto:postmaster@mox.example"
|
|
|
|
record, isdmarc, err := dmarc.ParseRecord(txt)
|
|
if err != nil {
|
|
log.Fatalf("parsing dmarc record: %v (isdmarc: %v)", err, isdmarc)
|
|
}
|
|
|
|
log.Printf("parsed record: %v", record)
|
|
}
|