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Copy pathoptions_unix_internal_test.go
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options_unix_internal_test.go
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//go:build darwin || freebsd || linux || openbsd
package dhcpd
import (
"fmt"
"net"
"testing"
"time"
"github.com/AdguardTeam/golibs/netutil"
"github.com/AdguardTeam/golibs/testutil"
"github.com/insomniacslk/dhcp/dhcpv4"
"github.com/stretchr/testify/assert"
)
func TestParseOpt(t *testing.T) {
testCases := []struct {
name string
in string
wantCode dhcpv4.OptionCode
wantVal dhcpv4.OptionValue
wantErrMsg string
}{{
name: "hex_success",
in: "6 hex c0a80101c0a80102",
wantCode: dhcpv4.GenericOptionCode(6),
wantVal: dhcpv4.OptionGeneric{Data: []byte{
0xC0, 0xA8, 0x01, 0x01,
0xC0, 0xA8, 0x01, 0x02,
}},
wantErrMsg: "",
}, {
name: "ip_success",
in: "6 ip 1.2.3.4",
wantCode: dhcpv4.GenericOptionCode(6),
wantVal: dhcpv4.IP(net.IP{0x01, 0x02, 0x03, 0x04}),
wantErrMsg: "",
}, {
name: "ips_success",
in: "6 ips 192.168.1.1,192.168.1.2",
wantCode: dhcpv4.GenericOptionCode(6),
wantVal: dhcpv4.IPs([]net.IP{
{0xC0, 0xA8, 0x01, 0x01},
{0xC0, 0xA8, 0x01, 0x02},
}),
wantErrMsg: "",
}, {
name: "text_success",
in: "252 text http://192.168.1.1/",
wantCode: dhcpv4.GenericOptionCode(252),
wantVal: dhcpv4.String("http://192.168.1.1/"),
wantErrMsg: "",
}, {
name: "del_success",
in: "61 del",
wantCode: dhcpv4.GenericOptionCode(dhcpv4.OptionClientIdentifier),
wantVal: dhcpv4.OptionGeneric{Data: nil},
wantErrMsg: "",
}, {
name: "bool_success",
in: "19 bool true",
wantCode: dhcpv4.GenericOptionCode(dhcpv4.OptionIPForwarding),
wantVal: dhcpv4.OptionGeneric{Data: []byte{0x01}},
wantErrMsg: "",
}, {
name: "bool_success_false",
in: "19 bool F",
wantCode: dhcpv4.GenericOptionCode(dhcpv4.OptionIPForwarding),
wantVal: dhcpv4.OptionGeneric{Data: []byte{0x00}},
wantErrMsg: "",
}, {
name: "dur_success",
in: "24 dur 2h5s",
wantCode: dhcpv4.GenericOptionCode(dhcpv4.OptionPathMTUAgingTimeout),
wantVal: dhcpv4.Duration(2*time.Hour + 5*time.Second),
wantErrMsg: "",
}, {
name: "u8_success",
in: "23 u8 64",
wantCode: dhcpv4.GenericOptionCode(dhcpv4.OptionDefaultIPTTL),
wantVal: dhcpv4.OptionGeneric{Data: []byte{0x40}},
wantErrMsg: "",
}, {
name: "u16_success",
in: "22 u16 1234",
wantCode: dhcpv4.GenericOptionCode(dhcpv4.OptionMaximumDatagramAssemblySize),
wantVal: dhcpv4.Uint16(1234),
wantErrMsg: "",
}, {
name: "bad_parts",
in: "6 ip",
wantCode: nil,
wantVal: nil,
wantErrMsg: `invalid option string "6 ip": bad option format`,
}, {
name: "bad_code",
in: "256 ip 1.1.1.1",
wantCode: nil,
wantVal: nil,
wantErrMsg: `invalid option string "256 ip 1.1.1.1": parsing option code: ` +
`strconv.ParseUint: parsing "256": value out of range`,
}, {
name: "bad_type",
in: "6 bad 1.1.1.1",
wantCode: nil,
wantVal: nil,
wantErrMsg: `invalid option string "6 bad 1.1.1.1": unknown option type "bad"`,
}, {
name: "hex_error",
in: "6 hex ZZZ",
wantCode: nil,
wantVal: nil,
wantErrMsg: `invalid option string "6 hex ZZZ": decoding hex: ` +
`encoding/hex: invalid byte: U+005A 'Z'`,
}, {
name: "ip_error",
in: "6 ip 1.2.3.x",
wantCode: nil,
wantVal: nil,
wantErrMsg: "invalid option string \"6 ip 1.2.3.x\": bad ipv4 address \"1.2.3.x\"",
}, {
name: "ip_error_v6",
in: "6 ip ::1234",
wantCode: nil,
wantVal: nil,
wantErrMsg: "invalid option string \"6 ip ::1234\": bad ipv4 address \"::1234\"",
}, {
name: "ips_error",
in: "6 ips 192.168.1.1,192.168.1.x",
wantCode: nil,
wantVal: nil,
wantErrMsg: "invalid option string \"6 ips 192.168.1.1,192.168.1.x\": " +
"parsing ip at index 1: bad ipv4 address \"192.168.1.x\"",
}, {
name: "bool_error",
in: "19 bool yes",
wantCode: nil,
wantVal: nil,
wantErrMsg: "invalid option string \"19 bool yes\": decoding bool: " +
"strconv.ParseBool: parsing \"yes\": invalid syntax",
}, {
name: "dur_error",
in: "24 dur 3y",
wantCode: nil,
wantVal: nil,
wantErrMsg: `invalid option string "24 dur 3y": decoding dur: time: ` +
`unknown unit "y" in duration "3y"`,
}, {
name: "u8_error",
in: "23 u8 256",
wantCode: nil,
wantVal: nil,
wantErrMsg: "invalid option string \"23 u8 256\": decoding u8: " +
"strconv.ParseUint: parsing \"256\": value out of range",
}, {
name: "u16_error",
in: "23 u16 65536",
wantCode: nil,
wantVal: nil,
wantErrMsg: "invalid option string \"23 u16 65536\": decoding u16: " +
"strconv.ParseUint: parsing \"65536\": value out of range",
}}
for _, tc := range testCases {
t.Run(tc.name, func(t *testing.T) {
code, val, err := parseDHCPOption(tc.in)
testutil.AssertErrorMsg(t, tc.wantErrMsg, err)
assert.Equal(t, tc.wantCode, code)
assert.Equal(t, tc.wantVal, val)
})
}
}
func TestPrepareOptions(t *testing.T) {
oneIP, otherIP := net.IP{1, 2, 3, 4}, net.IP{5, 6, 7, 8}
testCases := []struct {
name string
wantExplicit dhcpv4.Options
opts []string
}{{
name: "all_default",
wantExplicit: nil,
opts: nil,
}, {
name: "configured_ip",
wantExplicit: dhcpv4.OptionsFromList(
dhcpv4.OptBroadcastAddress(oneIP),
),
opts: []string{
fmt.Sprintf("%d ip %s", dhcpv4.OptionBroadcastAddress, oneIP),
},
}, {
name: "configured_ips",
wantExplicit: dhcpv4.OptionsFromList(
dhcpv4.Option{
Code: dhcpv4.OptionDomainNameServer,
Value: dhcpv4.IPs{oneIP, otherIP},
},
),
opts: []string{
fmt.Sprintf("%d ips %s,%s", dhcpv4.OptionDomainNameServer, oneIP, otherIP),
},
}, {
name: "configured_bad",
wantExplicit: nil,
opts: []string{
"19 bool yes",
"24 dur 3y",
"23 u8 256",
"23 u16 65536",
"20 hex",
"23 hex abc",
"32 ips 1,2,3,4",
"28 256.256.256.256",
},
}, {
name: "configured_del",
wantExplicit: dhcpv4.OptionsFromList(
dhcpv4.OptBroadcastAddress(nil),
),
opts: []string{
"28 del",
},
}, {
name: "rewritten_del",
wantExplicit: dhcpv4.OptionsFromList(
dhcpv4.OptBroadcastAddress(netutil.IPv4bcast()),
),
opts: []string{
"28 del",
"28 ip 255.255.255.255",
},
}, {
name: "configured_and_del",
wantExplicit: dhcpv4.OptionsFromList(
dhcpv4.Option{
Code: dhcpv4.OptionGeoConf,
Value: dhcpv4.String("cba"),
},
),
opts: []string{
"123 text abc",
"123 del",
"123 text cba",
},
}}
for _, tc := range testCases {
s := &v4Server{
conf: &V4ServerConf{
Options: tc.opts,
},
}
t.Run(tc.name, func(t *testing.T) {
s.prepareOptions()
assert.Equal(t, tc.wantExplicit, s.explicitOpts)
for c := range s.explicitOpts {
assert.NotContains(t, s.implicitOpts, c)
}
})
}
}