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dhcp working!

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soypat
2025-07-09 16:54:48 -03:00
parent 9c0e250cf6
commit 489e9951fa
10 changed files with 228 additions and 69 deletions
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dhcpv4/dhcp_test.go
+27 -13
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@@ -98,13 +98,18 @@ func TestExample(t *testing.T) {
Hostname: clientHostname,
})
buf := make([]byte, 2048)
buf2 := make([]byte, len(buf))
n, err := cl.Encapsulate(buf, 0)
if err != nil {
t.Fatal(err)
} else if n <= 0 {
t.Fatal("no data sent out by client after starting request")
}
n, err = cl.Encapsulate(buf2, 0)
if err != nil {
t.Error("client encaps double tap after discover:", err)
}
// Fabricate server OFFER response.
dfrm, _ := NewFrame(buf)
dfrm.ClearHeader()
dfrm.SetOp(OpReply)
@@ -116,27 +121,36 @@ func TestExample(t *testing.T) {
copy(dfrm.CHAddr()[:], clientHwaddr[:])
dfrm.SetMagicCookie(MagicCookie)
ntot := 0
nopt, _ := EncodeOption(buf[optionsOffset+ntot:], OptMessageType, byte(MsgOffer))
nopt, _ := EncodeOption(buf[OptionsOffset+ntot:], OptMessageType, byte(MsgOffer))
ntot += nopt
nopt, _ = EncodeOption(buf[optionsOffset+ntot:], OptServerIdentification, serverIP[:]...)
nopt, _ = EncodeOption(buf[OptionsOffset+ntot:], OptServerIdentification, serverIP[:]...)
ntot += nopt
nopt, _ = EncodeOption32(buf[optionsOffset+ntot:], OptServerIdentification, offerLease)
nopt, _ = EncodeOption32(buf[OptionsOffset+ntot:], OptServerIdentification, offerLease)
ntot += nopt
nopt, _ = EncodeOption(buf[optionsOffset+ntot:], OptSubnetMask, subnetMask[:]...)
nopt, _ = EncodeOption(buf[OptionsOffset+ntot:], OptSubnetMask, subnetMask[:]...)
ntot += nopt
nopt, _ = EncodeOption(buf[optionsOffset+ntot:], OptRouter, routerAddr[:]...)
nopt, _ = EncodeOption(buf[OptionsOffset+ntot:], OptRouter, routerAddr[:]...)
ntot += nopt
nopt, _ = EncodeOption(buf[optionsOffset+ntot:], OptDNSServers, dnsAddr[:]...)
nopt, _ = EncodeOption(buf[OptionsOffset+ntot:], OptDNSServers, dnsAddr[:]...)
ntot += nopt
nopt, _ = EncodeOption(buf[optionsOffset+ntot:], OptEnd, dnsAddr[:]...)
nopt, _ = EncodeOption(buf[OptionsOffset+ntot:], OptEnd, dnsAddr[:]...)
ntot += nopt
err = cl.Demux(buf[:optionsOffset+ntot], 0)
err = cl.Demux(buf[:OptionsOffset+ntot], 0)
if err != nil {
t.Fatal(err)
}
// frame := buf[:optionsOffset]
// frame = AppendOption(frame, OptMessageType, byte(MsgOffer))
// frame = AppendOption(frame, OptServerIdentification, serverIP[:]...)
// frame = AppendOption(frame, OptIPAddressLeaseTime, serverIP[:]...)
n, err = cl.Encapsulate(buf[:], 0)
if err != nil {
t.Fatal(err)
} else if n <= 0 {
t.Fatal("no data written from client in response to offer")
}
n, err = cl.Encapsulate(buf[:], 0)
if err != nil {
t.Error("encapsulate double tap after request:", err)
} else if n > 0 {
t.Error("encapsulate double tap got data!", n)
}
}