address_darwin_test.go

     1  // Copyright 2016 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  package routebsd
     6  
     7  import (
     8  	"net/netip"
     9  	"reflect"
    10  	"syscall"
    11  	"testing"
    12  )
    13  
    14  type parseAddrsOnDarwinTest struct {
    15  	attrs uint
    16  	b     []byte
    17  	as    []Addr
    18  }
    19  
    20  var parseAddrsOnDarwinLittleEndianTests = []parseAddrsOnDarwinTest{
    21  	{
    22  		syscall.RTA_DST | syscall.RTA_GATEWAY | syscall.RTA_NETMASK,
    23  		[]byte{
    24  			0x10, 0x2, 0x0, 0x0, 0xc0, 0xa8, 0x56, 0x0,
    25  			0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
    26  
    27  			0x14, 0x12, 0x4, 0x0, 0x6, 0x0, 0x0, 0x0,
    28  			0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
    29  			0x0, 0x0, 0x0, 0x0,
    30  
    31  			0x7, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
    32  		},
    33  		[]Addr{
    34  			&InetAddr{IP: netip.AddrFrom4([4]byte{192, 168, 86, 0})},
    35  			&LinkAddr{Index: 4},
    36  			&InetAddr{IP: netip.AddrFrom4([4]byte{255, 255, 255, 255})},
    37  			nil,
    38  			nil,
    39  			nil,
    40  			nil,
    41  			nil,
    42  		},
    43  	},
    44  	{
    45  		syscall.RTA_DST | syscall.RTA_GATEWAY | syscall.RTA_NETMASK,
    46  		[]byte{
    47  			0x10, 0x02, 0x00, 0x00, 0x64, 0x71, 0x00, 0x00,
    48  			0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    49  
    50  			0x14, 0x12, 0x21, 0x00, 0x01, 0x08, 0x00, 0x00,
    51  			0x75, 0x74, 0x75, 0x6e, 0x34, 0x33, 0x31, 0x39,
    52  			0x00, 0x00, 0x00, 0x00,
    53  
    54  			0x06, 0x02, 0x00, 0x00, 0xff, 0xff, 0x00, 0x00,
    55  		},
    56  		[]Addr{
    57  			&InetAddr{IP: netip.AddrFrom4([4]byte{100, 113, 0, 0})},
    58  			&LinkAddr{Index: 33, Name: "utun4319"},
    59  			&InetAddr{IP: netip.AddrFrom4([4]byte{255, 255, 0, 0})},
    60  			nil,
    61  			nil,
    62  			nil,
    63  			nil,
    64  			nil,
    65  		},
    66  	},
    67  	// route -n add -inet6 fd84:1b4e:6281:: -prefixlen 48 fe80::f22f:4bff:fe09:3bff%utun4319
    68  	// gw fe80:0000:0000:0000:f22f:4bff:fe09:3bff
    69  	{
    70  		syscall.RTA_DST | syscall.RTA_GATEWAY | syscall.RTA_NETMASK,
    71  		[]byte{
    72  			0x1c, 0x1e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    73  			0xfd, 0x84, 0x1b, 0x4e, 0x62, 0x81, 0x00, 0x00,
    74  			0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    75  			0x00, 0x00, 0x00, 0x00,
    76  
    77  			0x1c, 0x1e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    78  			0xfe, 0x80, 0x00, 0x21, 0x00, 0x00, 0x00, 0x00,
    79  			0xf2, 0x2f, 0x4b, 0xff, 0xfe, 0x09, 0x3b, 0xff,
    80  			0x00, 0x00, 0x00, 0x00,
    81  
    82  			0x0e, 0x1e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
    83  			0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00,
    84  		},
    85  		[]Addr{
    86  			&InetAddr{IP: netip.AddrFrom16([16]byte{0xfd, 0x84, 0x1b, 0x4e, 0x62, 0x81})},
    87  			&InetAddr{IP: netip.AddrFrom16([16]byte{0xfe, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xf2, 0x2f, 0x4b, 0xff, 0xfe, 0x09, 0x3b, 0xff})},
    88  			&InetAddr{IP: netip.AddrFrom16([16]byte{0xff, 0xff, 0xff, 0xff, 0xff, 0xff})},
    89  			nil,
    90  			nil,
    91  			nil,
    92  			nil,
    93  			nil,
    94  		},
    95  	},
    96  	// golang/go#70528, the kernel can produce addresses of length 0
    97  	{
    98  		syscall.RTA_DST | syscall.RTA_GATEWAY | syscall.RTA_NETMASK,
    99  		[]byte{
   100  			0x00, 0x1e, 0x00, 0x00,
   101  
   102  			0x1c, 0x1e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
   103  			0xfe, 0x80, 0x00, 0x21, 0x00, 0x00, 0x00, 0x00,
   104  			0xf2, 0x2f, 0x4b, 0xff, 0xfe, 0x09, 0x3b, 0xff,
   105  			0x00, 0x00, 0x00, 0x00,
   106  
   107  			0x0e, 0x1e, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
   108  			0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x00, 0x00,
   109  		},
   110  		[]Addr{
   111  			&InetAddr{IP: netip.AddrFrom16([16]byte{})},
   112  			&InetAddr{IP: netip.AddrFrom16([16]byte{0xfe, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xf2, 0x2f, 0x4b, 0xff, 0xfe, 0x09, 0x3b, 0xff})},
   113  			&InetAddr{IP: netip.AddrFrom16([16]byte{0xff, 0xff, 0xff, 0xff, 0xff, 0xff})},
   114  			nil,
   115  			nil,
   116  			nil,
   117  			nil,
   118  			nil,
   119  		},
   120  	},
   121  	// Additional case: golang/go/issues/70528#issuecomment-2498692877
   122  	{
   123  		syscall.RTA_DST | syscall.RTA_GATEWAY | syscall.RTA_NETMASK,
   124  		[]byte{
   125  			0x84, 0x00, 0x05, 0x04, 0x01, 0x00, 0x00, 0x00, 0x03, 0x08, 0x00, 0x01, 0x15, 0x00, 0x00, 0x00,
   126  			0x1B, 0x01, 0x00, 0x00, 0xF5, 0x5A, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
   127  			0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
   128  			0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
   129  			0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
   130  			0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x02, 0x00, 0x00,
   131  			0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00,
   132  			0x14, 0x12, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
   133  			0x00, 0x00, 0x00, 0x00,
   134  		},
   135  		[]Addr{
   136  			&InetAddr{IP: netip.AddrFrom4([4]byte{0x0, 0x0, 0x0, 0x0})},
   137  			nil,
   138  			nil,
   139  			nil,
   140  			nil,
   141  			nil,
   142  			nil,
   143  			nil,
   144  		},
   145  	},
   146  }
   147  
   148  func TestParseAddrsOnDarwin(t *testing.T) {
   149  	tests := parseAddrsOnDarwinLittleEndianTests
   150  	if nativeEndian != littleEndian {
   151  		t.Skip("no test for non-little endian machine yet")
   152  	}
   153  
   154  	for i, tt := range tests {
   155  		as, err := parseAddrs(tt.attrs, tt.b)
   156  		if err != nil {
   157  			t.Error(i, err)
   158  			continue
   159  		}
   160  		if !reflect.DeepEqual(as, tt.as) {
   161  			t.Errorf("#%d: got %+v; want %+v", i, as, tt.as)
   162  			continue
   163  		}
   164  	}
   165  }
   166
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