mox/smtpserver/fuzz_test.go
Mechiel Lukkien 2eecf38842
unbreak the subcommands that talk to the mox instance of the ctl socket
broken on may 31st with the "open tls keys as root" change, 70d07c5459, so
broken in v0.0.4, not in v0.0.3
2023-06-16 13:27:27 +02:00

113 lines
2.8 KiB
Go

package smtpserver
import (
"fmt"
"net"
"os"
"testing"
"time"
"github.com/mjl-/mox/dns"
"github.com/mjl-/mox/mox-"
"github.com/mjl-/mox/queue"
"github.com/mjl-/mox/store"
)
// Fuzz the server. For each fuzz string, we set up servers in various connection states, and write the string as command.
func FuzzServer(f *testing.F) {
f.Add("HELO remote")
f.Add("EHLO remote")
f.Add("AUTH PLAIN")
f.Add("MAIL FROM:<remote@remote>")
f.Add("RCPT TO:<local@mox.example>")
f.Add("DATA")
f.Add(".")
f.Add("RSET")
f.Add("VRFY x")
f.Add("EXPN x")
f.Add("HELP")
f.Add("NOOP")
f.Add("QUIT")
mox.Context = ctxbg
mox.ConfigStaticPath = "../testdata/smtpserverfuzz/mox.conf"
mox.MustLoadConfig(true, false)
dataDir := mox.ConfigDirPath(mox.Conf.Static.DataDir)
os.RemoveAll(dataDir)
acc, err := store.OpenAccount("mjl")
if err != nil {
f.Fatalf("open account: %v", err)
}
defer acc.Close()
err = acc.SetPassword("testtest")
if err != nil {
f.Fatalf("set password: %v", err)
}
done := store.Switchboard()
defer close(done)
err = queue.Init()
if err != nil {
f.Fatalf("queue init: %v", err)
}
defer queue.Shutdown()
comm := store.RegisterComm(acc)
defer comm.Unregister()
var cid int64 = 1
var fl *os.File
if false {
fl, err = os.Create("fuzz.log")
if err != nil {
f.Fatalf("fuzz log")
}
defer fl.Close()
}
flog := func(err error, msg string) {
if fl != nil && err != nil {
fmt.Fprintf(fl, "%s: %v\n", msg, err)
}
}
f.Fuzz(func(t *testing.T, s string) {
run := func(cmds []string) {
limitersInit() // Reset rate limiters.
serverConn, clientConn := net.Pipe()
defer serverConn.Close()
defer clientConn.Close()
go func() {
err := clientConn.SetDeadline(time.Now().Add(time.Second))
flog(err, "set client deadline")
_, err = clientConn.Read(make([]byte, 1024))
flog(err, "read ehlo")
for _, cmd := range cmds {
_, err = clientConn.Write([]byte(cmd + "\r\n"))
flog(err, "write command")
_, err = clientConn.Read(make([]byte, 1024))
flog(err, "read response")
}
_, err = clientConn.Write([]byte(s + "\r\n"))
flog(err, "write test command")
_, err = clientConn.Read(make([]byte, 1024))
flog(err, "read test response")
clientConn.Close()
serverConn.Close()
}()
resolver := dns.MockResolver{}
const submission = false
err := serverConn.SetDeadline(time.Now().Add(time.Second))
flog(err, "set server deadline")
serve("test", cid, dns.Domain{ASCII: "mox.example"}, nil, serverConn, resolver, submission, false, 100<<10, false, false, nil)
cid++
}
run([]string{})
run([]string{"EHLO remote"})
run([]string{"EHLO remote", "MAIL FROM:<remote@example.org>"})
run([]string{"EHLO remote", "MAIL FROM:<remote@example.org>", "RCPT TO:<mjl@mox.example>"})
// todo: submission with login
})
}