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06b7c8bba0
Broken since introducing LoginAttempts. The fuzzing functions didn't get the store.Init() call, and would hang on trying to send to the loginattemptwriter.
126 lines
3.1 KiB
Go
126 lines
3.1 KiB
Go
package smtpserver
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import (
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"fmt"
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"net"
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"os"
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"path/filepath"
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"testing"
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"time"
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"github.com/mjl-/mox/dns"
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"github.com/mjl-/mox/mlog"
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"github.com/mjl-/mox/mox-"
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"github.com/mjl-/mox/queue"
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"github.com/mjl-/mox/store"
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)
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// Fuzz the server. For each fuzz string, we set up servers in various connection states, and write the string as command.
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func FuzzServer(f *testing.F) {
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f.Add("HELO remote")
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f.Add("EHLO remote")
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f.Add("AUTH PLAIN")
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f.Add("MAIL FROM:<remote@remote>")
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f.Add("RCPT TO:<local@mox.example>")
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f.Add("DATA")
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f.Add(".")
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f.Add("RSET")
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f.Add("VRFY x")
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f.Add("EXPN x")
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f.Add("HELP")
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f.Add("NOOP")
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f.Add("QUIT")
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log := mlog.New("smtpserver", nil)
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mox.Context = ctxbg
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mox.ConfigStaticPath = filepath.FromSlash("../testdata/smtpserverfuzz/mox.conf")
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mox.MustLoadConfig(true, false)
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store.Close() // May not be open, we ignore error.
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dataDir := mox.ConfigDirPath(mox.Conf.Static.DataDir)
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os.RemoveAll(dataDir)
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err := store.Init(ctxbg)
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if err != nil {
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f.Fatalf("store init: %v", err)
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}
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acc, err := store.OpenAccount(log, "mjl", false)
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if err != nil {
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f.Fatalf("open account: %v", err)
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}
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defer func() {
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acc.Close()
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acc.WaitClosed()
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}()
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err = acc.SetPassword(log, "testtest")
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if err != nil {
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f.Fatalf("set password: %v", err)
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}
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defer store.Switchboard()()
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err = queue.Init()
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if err != nil {
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f.Fatalf("queue init: %v", err)
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}
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defer queue.Shutdown()
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comm := store.RegisterComm(acc)
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defer comm.Unregister()
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var cid int64 = 1
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var fl *os.File
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if false {
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fl, err = os.Create("fuzz.log")
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if err != nil {
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f.Fatalf("fuzz log")
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}
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defer fl.Close()
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}
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flog := func(err error, msg string) {
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if fl != nil && err != nil {
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fmt.Fprintf(fl, "%s: %v\n", msg, err)
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}
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}
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f.Fuzz(func(t *testing.T, s string) {
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run := func(cmds []string) {
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limitersInit() // Reset rate limiters.
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serverConn, clientConn := net.Pipe()
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defer serverConn.Close()
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defer clientConn.Close()
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go func() {
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err := clientConn.SetDeadline(time.Now().Add(time.Second))
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flog(err, "set client deadline")
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_, err = clientConn.Read(make([]byte, 1024))
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flog(err, "read ehlo")
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for _, cmd := range cmds {
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_, err = clientConn.Write([]byte(cmd + "\r\n"))
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flog(err, "write command")
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_, err = clientConn.Read(make([]byte, 1024))
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flog(err, "read response")
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}
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_, err = clientConn.Write([]byte(s + "\r\n"))
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flog(err, "write test command")
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_, err = clientConn.Read(make([]byte, 1024))
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flog(err, "read test response")
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clientConn.Close()
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serverConn.Close()
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}()
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resolver := dns.MockResolver{}
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const submission = false
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const viaHTTPS = false
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err := serverConn.SetDeadline(time.Now().Add(time.Second))
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flog(err, "set server deadline")
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serve("test", cid, dns.Domain{ASCII: "mox.example"}, nil, serverConn, resolver, submission, false, viaHTTPS, 100<<10, false, false, false, nil, 0)
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cid++
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}
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run([]string{})
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run([]string{"EHLO remote"})
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run([]string{"EHLO remote", "MAIL FROM:<remote@example.org>"})
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run([]string{"EHLO remote", "MAIL FROM:<remote@example.org>", "RCPT TO:<mjl@mox.example>"})
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// todo: submission with login
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})
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}
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