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// Copyright 2020 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
//go:build darwin || dragonfly || freebsd || netbsd || openbsd
package unix
import (
"reflect"
"strings"
"testing"
"unsafe"
)
func Test_anyToSockaddr(t *testing.T) {
tests := []struct {
name string
rsa *RawSockaddrAny
sa Sockaddr
err error
}{
{
name: "AF_UNIX zero length",
rsa: sockaddrUnixToAny(RawSockaddrUnix{
Family: AF_UNIX,
}),
err: EINVAL,
},
{
name: "AF_UNIX unnamed",
rsa: sockaddrUnixToAny(RawSockaddrUnix{
Len: 2, // family (uint16)
Family: AF_UNIX,
}),
sa: &SockaddrUnix{},
},
{
name: "AF_UNIX named",
rsa: sockaddrUnixToAny(RawSockaddrUnix{
Len: uint8(2 + len("gopher")), // family (uint16) + len(gopher)
Family: AF_UNIX,
Path: [104]int8{'g', 'o', 'p', 'h', 'e', 'r'},
}),
sa: &SockaddrUnix{
Name: "gopher",
},
},
{
name: "AF_UNIX named",
rsa: sockaddrUnixToAny(RawSockaddrUnix{
Len: uint8(2 + len("go")),
Family: AF_UNIX,
Path: [104]int8{'g', 'o', 'p', 'h', 'e', 'r'},
}),
sa: &SockaddrUnix{
Name: "go",
},
},
{
name: "AF_MAX EAFNOSUPPORT",
rsa: &RawSockaddrAny{
Addr: RawSockaddr{
Family: AF_MAX,
},
},
err: EAFNOSUPPORT,
},
// TODO: expand to support other families.
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
fd := int(0)
sa, err := anyToSockaddr(fd, tt.rsa)
if err != tt.err {
t.Fatalf("unexpected error: %v, want: %v", err, tt.err)
}
if !reflect.DeepEqual(sa, tt.sa) {
t.Fatalf("unexpected Sockaddr:\n got: %#v\nwant: %#v", sa, tt.sa)
}
})
}
}
func TestSockaddrUnix_sockaddr(t *testing.T) {
tests := []struct {
name string
sa *SockaddrUnix
raw *RawSockaddrUnix
err error
}{
{
name: "unnamed",
sa: &SockaddrUnix{},
raw: &RawSockaddrUnix{
Family: AF_UNIX,
},
err: EINVAL,
},
{
name: "named",
sa: &SockaddrUnix{
Name: "gopher",
},
raw: &RawSockaddrUnix{
Len: uint8(2 + len("gopher") + 1), // family (uint16) + len(gopher) + '\0'
Family: AF_UNIX,
Path: [104]int8{'g', 'o', 'p', 'h', 'e', 'r'},
},
},
{
name: "named too long",
sa: &SockaddrUnix{
Name: strings.Repeat("A", 104),
},
err: EINVAL,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
out, _, err := tt.sa.sockaddr()
if err != tt.err {
t.Fatalf("unexpected error: %v, want: %v", err, tt.err)
}
if out == nil {
// No pointer to cast, return early.
return
}
raw := (*RawSockaddrUnix)(out)
if !reflect.DeepEqual(raw, tt.raw) {
t.Fatalf("unexpected RawSockaddrUnix:\n got: %#v\nwant: %#v", raw, tt.raw)
}
})
}
}
func sockaddrUnixToAny(in RawSockaddrUnix) *RawSockaddrAny {
var out RawSockaddrAny
// Explicitly copy the contents of in into out to produce the correct
// sockaddr structure, without relying on unsafe casting to a type of a
// larger size.
copy(
(*(*[SizeofSockaddrAny]byte)(unsafe.Pointer(&out)))[:],
(*(*[SizeofSockaddrUnix]byte)(unsafe.Pointer(&in)))[:],
)
return &out
}