1//go:build openbsd
 2// +build openbsd
 3
 4//
 5// Copyright (c) 2019 Ted Unangst <tedu@tedunangst.com>
 6//
 7// Permission to use, copy, modify, and distribute this software for any
 8// purpose with or without fee is hereby granted, provided that the above
 9// copyright notice and this permission notice appear in all copies.
10//
11// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
12// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
13// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
14// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
15// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
16// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
17// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18
19package main
20
21/*
22#include <stdlib.h>
23#include <unistd.h>
24*/
25import "C"
26
27import (
28	"fmt"
29	"unsafe"
30)
31
32func Unveil(path string, perms string) {
33	cpath := C.CString(path)
34	defer C.free(unsafe.Pointer(cpath))
35	cperms := C.CString(perms)
36	defer C.free(unsafe.Pointer(cperms))
37
38	rv, err := C.unveil(cpath, cperms)
39	if rv != 0 {
40		elog.Fatalf("unveil(%s, %s) failure (%d)", path, perms, err)
41	}
42}
43
44func Pledge(promises string) {
45	cpromises := C.CString(promises)
46	defer C.free(unsafe.Pointer(cpromises))
47
48	rv, err := C.pledge(cpromises, nil)
49	if rv != 0 {
50		elog.Fatalf("pledge(%s) failure (%d)", promises, err)
51	}
52}
53
54func init() {
55	preservehooks = append(preservehooks, func() {
56		Unveil("/etc/ssl", "r")
57		if viewDir != dataDir {
58			Unveil(viewDir, "r")
59		}
60		Unveil(dataDir, "rwc")
61		C.unveil(nil, nil)
62		Pledge("stdio rpath wpath cpath flock dns inet unix")
63	})
64	backendhooks = append(backendhooks, func() {
65		C.unveil(nil, nil)
66		Pledge("stdio unix")
67	})
68}