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faa08583c0
we could make more types of delays configurable. the current approach isn't great, as it results in an a default value of "0s" in the config file, while the actual default is 15s (which is documented just above, but still).
113 lines
2.8 KiB
Go
113 lines
2.8 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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"testing"
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"time"
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"github.com/mjl-/mox/dns"
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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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mox.Context = ctxbg
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mox.ConfigStaticPath = "../testdata/smtpserverfuzz/mox.conf"
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mox.MustLoadConfig(true, false)
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dataDir := mox.ConfigDirPath(mox.Conf.Static.DataDir)
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os.RemoveAll(dataDir)
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acc, err := store.OpenAccount("mjl")
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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 acc.Close()
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err = acc.SetPassword("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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done := store.Switchboard()
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defer close(done)
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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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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, 100<<10, 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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