1023 lines
22 KiB
Go
1023 lines
22 KiB
Go
// Copyright 2020 The Libc 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 unix
|
||
// +build unix
|
||
|
||
package libc // import "modernc.org/libc"
|
||
|
||
import (
|
||
"bufio"
|
||
"encoding/hex"
|
||
"io/ioutil"
|
||
"math"
|
||
"math/rand"
|
||
"os"
|
||
gosignal "os/signal"
|
||
"reflect"
|
||
"strconv"
|
||
"strings"
|
||
"sync"
|
||
"syscall"
|
||
"time"
|
||
"unsafe"
|
||
|
||
guuid "github.com/google/uuid"
|
||
"golang.org/x/sys/unix"
|
||
"modernc.org/libc/errno"
|
||
"modernc.org/libc/grp"
|
||
"modernc.org/libc/poll"
|
||
"modernc.org/libc/pwd"
|
||
"modernc.org/libc/signal"
|
||
"modernc.org/libc/stdio"
|
||
"modernc.org/libc/stdlib"
|
||
"modernc.org/libc/sys/types"
|
||
ctime "modernc.org/libc/time"
|
||
)
|
||
|
||
var staticGetpwnam pwd.Passwd
|
||
|
||
func init() {
|
||
atExit = append(atExit, func() { closePasswd(&staticGetpwnam) })
|
||
}
|
||
|
||
// sighandler_t signal(int signum, sighandler_t handler);
|
||
func Xsignal(t *TLS, signum int32, handler uintptr) uintptr { //TODO use sigaction?
|
||
signalsMu.Lock()
|
||
|
||
defer signalsMu.Unlock()
|
||
|
||
r := signals[signum]
|
||
signals[signum] = handler
|
||
switch handler {
|
||
case signal.SIG_DFL:
|
||
panic(todo("%v %#x", syscall.Signal(signum), handler))
|
||
case signal.SIG_IGN:
|
||
switch r {
|
||
case signal.SIG_DFL:
|
||
gosignal.Ignore(syscall.Signal(signum)) //TODO
|
||
case signal.SIG_IGN:
|
||
gosignal.Ignore(syscall.Signal(signum))
|
||
default:
|
||
panic(todo("%v %#x", syscall.Signal(signum), handler))
|
||
}
|
||
default:
|
||
switch r {
|
||
case signal.SIG_DFL:
|
||
c := make(chan os.Signal, 1)
|
||
gosignal.Notify(c, syscall.Signal(signum))
|
||
go func() { //TODO mechanism to stop/cancel
|
||
for {
|
||
<-c
|
||
var f func(*TLS, int32)
|
||
*(*uintptr)(unsafe.Pointer(&f)) = handler
|
||
tls := NewTLS()
|
||
f(tls, signum)
|
||
tls.Close()
|
||
}
|
||
}()
|
||
case signal.SIG_IGN:
|
||
panic(todo("%v %#x", syscall.Signal(signum), handler))
|
||
default:
|
||
panic(todo("%v %#x", syscall.Signal(signum), handler))
|
||
}
|
||
}
|
||
return r
|
||
}
|
||
|
||
// void rewind(FILE *stream);
|
||
func Xrewind(t *TLS, stream uintptr) {
|
||
Xfseek(t, stream, 0, stdio.SEEK_SET)
|
||
}
|
||
|
||
// int putchar(int c);
|
||
func Xputchar(t *TLS, c int32) int32 {
|
||
if _, err := write([]byte{byte(c)}); err != nil {
|
||
return stdio.EOF
|
||
}
|
||
|
||
return int32(c)
|
||
}
|
||
|
||
// int gethostname(char *name, size_t len);
|
||
func Xgethostname(t *TLS, name uintptr, slen types.Size_t) int32 {
|
||
if slen < 0 {
|
||
t.setErrno(errno.EINVAL)
|
||
return -1
|
||
}
|
||
|
||
if slen == 0 {
|
||
return 0
|
||
}
|
||
|
||
s, err := os.Hostname()
|
||
if err != nil {
|
||
panic(todo(""))
|
||
}
|
||
|
||
n := len(s)
|
||
if len(s) >= int(slen) {
|
||
n = int(slen) - 1
|
||
}
|
||
sh := (*reflect.StringHeader)(unsafe.Pointer(&s))
|
||
copy((*RawMem)(unsafe.Pointer(name))[:n:n], (*RawMem)(unsafe.Pointer(sh.Data))[:n:n])
|
||
*(*byte)(unsafe.Pointer(name + uintptr(n))) = 0
|
||
return 0
|
||
}
|
||
|
||
// int remove(const char *pathname);
|
||
func Xremove(t *TLS, pathname uintptr) int32 {
|
||
panic(todo(""))
|
||
}
|
||
|
||
// long pathconf(const char *path, int name);
|
||
func Xpathconf(t *TLS, path uintptr, name int32) long {
|
||
panic(todo(""))
|
||
}
|
||
|
||
// ssize_t recvfrom(int sockfd, void *buf, size_t len, int flags, struct sockaddr *src_addr, socklen_t *addrlen);
|
||
func Xrecvfrom(t *TLS, sockfd int32, buf uintptr, len types.Size_t, flags int32, src_addr, addrlen uintptr) types.Ssize_t {
|
||
panic(todo(""))
|
||
}
|
||
|
||
// ssize_t sendto(int sockfd, const void *buf, size_t len, int flags, const struct sockaddr *dest_addr, socklen_t addrlen);
|
||
func Xsendto(t *TLS, sockfd int32, buf uintptr, len types.Size_t, flags int32, src_addr uintptr, addrlen socklen_t) types.Ssize_t {
|
||
panic(todo(""))
|
||
}
|
||
|
||
// void srand48(long int seedval);
|
||
func Xsrand48(t *TLS, seedval long) {
|
||
panic(todo(""))
|
||
}
|
||
|
||
// long int lrand48(void);
|
||
func Xlrand48(t *TLS) long {
|
||
panic(todo(""))
|
||
}
|
||
|
||
// ssize_t sendmsg(int sockfd, const struct msghdr *msg, int flags);
|
||
func Xsendmsg(t *TLS, sockfd int32, msg uintptr, flags int32) types.Ssize_t {
|
||
panic(todo(""))
|
||
}
|
||
|
||
// int poll(struct pollfd *fds, nfds_t nfds, int timeout);
|
||
func Xpoll(t *TLS, fds uintptr, nfds poll.Nfds_t, timeout int32) int32 {
|
||
if nfds == 0 {
|
||
panic(todo(""))
|
||
}
|
||
|
||
// if dmesgs {
|
||
// dmesg("%v: %#x %v %v, %+v", origin(1), fds, nfds, timeout, (*[1000]unix.PollFd)(unsafe.Pointer(fds))[:nfds:nfds])
|
||
// }
|
||
n, err := unix.Poll((*[1000]unix.PollFd)(unsafe.Pointer(fds))[:nfds:nfds], int(timeout))
|
||
// if dmesgs {
|
||
// dmesg("%v: %v %v", origin(1), n, err)
|
||
// }
|
||
if err != nil {
|
||
t.setErrno(err)
|
||
return -1
|
||
}
|
||
|
||
return int32(n)
|
||
}
|
||
|
||
// ssize_t recvmsg(int sockfd, struct msghdr *msg, int flags);
|
||
func Xrecvmsg(t *TLS, sockfd int32, msg uintptr, flags int32) types.Ssize_t {
|
||
n, _, err := unix.Syscall(unix.SYS_RECVMSG, uintptr(sockfd), msg, uintptr(flags))
|
||
if err != 0 {
|
||
t.setErrno(err)
|
||
return -1
|
||
}
|
||
|
||
return types.Ssize_t(n)
|
||
}
|
||
|
||
// struct cmsghdr *CMSG_NXTHDR(struct msghdr *msgh, struct cmsghdr *cmsg);
|
||
func X__cmsg_nxthdr(t *TLS, msgh, cmsg uintptr) uintptr {
|
||
panic(todo(""))
|
||
}
|
||
|
||
// wchar_t *wcschr(const wchar_t *wcs, wchar_t wc);
|
||
func Xwcschr(t *TLS, wcs uintptr, wc wchar_t) wchar_t {
|
||
panic(todo(""))
|
||
}
|
||
|
||
// gid_t getegid(void);
|
||
func Xgetegid(t *TLS) types.Gid_t {
|
||
panic(todo(""))
|
||
}
|
||
|
||
// gid_t getgid(void);
|
||
func Xgetgid(t *TLS) types.Gid_t {
|
||
panic(todo(""))
|
||
}
|
||
|
||
// void *shmat(int shmid, const void *shmaddr, int shmflg);
|
||
func Xshmat(t *TLS, shmid int32, shmaddr uintptr, shmflg int32) uintptr {
|
||
panic(todo(""))
|
||
}
|
||
|
||
// int shmctl(int shmid, int cmd, struct shmid_ds *buf);
|
||
func Xshmctl(t *TLS, shmid, cmd int32, buf uintptr) int32 {
|
||
panic(todo(""))
|
||
}
|
||
|
||
// int shmdt(const void *shmaddr);
|
||
func Xshmdt(t *TLS, shmaddr uintptr) int32 {
|
||
panic(todo(""))
|
||
}
|
||
|
||
// int getresuid(uid_t *ruid, uid_t *euid, uid_t *suid);
|
||
func Xgetresuid(t *TLS, ruid, euid, suid uintptr) int32 {
|
||
panic(todo(""))
|
||
}
|
||
|
||
// int getresgid(gid_t *rgid, gid_t *egid, gid_t *sgid);
|
||
func Xgetresgid(t *TLS, rgid, egid, sgid uintptr) int32 {
|
||
panic(todo(""))
|
||
}
|
||
|
||
// FILE *tmpfile(void);
|
||
func Xtmpfile(t *TLS) uintptr {
|
||
f, err := ioutil.TempFile("", "tmpfile-")
|
||
if err != nil {
|
||
t.setErrno(err)
|
||
return 0
|
||
}
|
||
|
||
cf := newFile(t, int32(f.Fd()))
|
||
AtExit(func() {
|
||
nm := f.Name()
|
||
file(cf).close(t)
|
||
os.Remove(nm)
|
||
})
|
||
|
||
return cf
|
||
}
|
||
|
||
// FILE *fdopen(int fd, const char *mode);
|
||
func Xfdopen(t *TLS, fd int32, mode uintptr) uintptr {
|
||
m := strings.ReplaceAll(GoString(mode), "b", "")
|
||
switch m {
|
||
case
|
||
"a",
|
||
"a+",
|
||
"r",
|
||
"r+",
|
||
"w",
|
||
"w+":
|
||
default:
|
||
t.setErrno(errno.EINVAL)
|
||
return 0
|
||
}
|
||
|
||
if p := newFile(t, fd); p != 0 {
|
||
return p
|
||
}
|
||
|
||
t.setErrno(errno.EINVAL)
|
||
return 0
|
||
}
|
||
|
||
// struct passwd *getpwnam(const char *name);
|
||
func Xgetpwnam(t *TLS, name uintptr) uintptr {
|
||
f, err := os.Open("/etc/passwd")
|
||
if err != nil {
|
||
panic(todo("", err))
|
||
}
|
||
|
||
defer f.Close()
|
||
|
||
sname := GoString(name)
|
||
sc := bufio.NewScanner(f)
|
||
for sc.Scan() {
|
||
s := strings.TrimSpace(sc.Text())
|
||
if s == "" || strings.HasPrefix(s, "#") {
|
||
continue
|
||
}
|
||
|
||
// eg. "root:x:0:0:root:/root:/bin/bash"
|
||
a := strings.Split(s, ":")
|
||
if len(a) < 7 {
|
||
panic(todo(""))
|
||
}
|
||
|
||
if a[0] == sname {
|
||
uid, err := strconv.Atoi(a[2])
|
||
if err != nil {
|
||
panic(todo(""))
|
||
}
|
||
|
||
gid, err := strconv.Atoi(a[3])
|
||
if err != nil {
|
||
panic(todo(""))
|
||
}
|
||
|
||
closePasswd(&staticGetpwnam)
|
||
gecos := a[4]
|
||
if strings.Contains(gecos, ",") {
|
||
a := strings.Split(gecos, ",")
|
||
gecos = a[0]
|
||
}
|
||
initPasswd(t, &staticGetpwnam, a[0], a[1], uint32(uid), uint32(gid), gecos, a[5], a[6])
|
||
return uintptr(unsafe.Pointer(&staticGetpwnam))
|
||
}
|
||
}
|
||
|
||
if sc.Err() != nil {
|
||
panic(todo(""))
|
||
}
|
||
|
||
return 0
|
||
}
|
||
|
||
// int getpwnam_r(char *name, struct passwd *pwd, char *buf, size_t buflen, struct passwd **result);
|
||
func Xgetpwnam_r(t *TLS, name, cpwd, buf uintptr, buflen types.Size_t, result uintptr) int32 {
|
||
f, err := os.Open("/etc/passwd")
|
||
if err != nil {
|
||
panic(todo("", err))
|
||
}
|
||
|
||
defer f.Close()
|
||
|
||
sname := GoString(name)
|
||
sc := bufio.NewScanner(f)
|
||
for sc.Scan() {
|
||
s := strings.TrimSpace(sc.Text())
|
||
if s == "" || strings.HasPrefix(s, "#") {
|
||
continue
|
||
}
|
||
|
||
// eg. "root:x:0:0:root:/root:/bin/bash"
|
||
a := strings.Split(s, ":")
|
||
if len(a) < 7 {
|
||
panic(todo("%q", s))
|
||
}
|
||
|
||
if a[0] == sname {
|
||
uid, err := strconv.Atoi(a[2])
|
||
if err != nil {
|
||
panic(todo(""))
|
||
}
|
||
|
||
gid, err := strconv.Atoi(a[3])
|
||
if err != nil {
|
||
panic(todo(""))
|
||
}
|
||
|
||
gecos := a[4]
|
||
if strings.Contains(gecos, ",") {
|
||
a := strings.Split(gecos, ",")
|
||
gecos = a[0]
|
||
}
|
||
var v pwd.Passwd
|
||
if initPasswd2(t, buf, buflen, &v, a[0], a[1], uint32(uid), uint32(gid), gecos, a[5], a[6]) {
|
||
*(*pwd.Passwd)(unsafe.Pointer(cpwd)) = v
|
||
*(*uintptr)(unsafe.Pointer(result)) = cpwd
|
||
return 0
|
||
}
|
||
|
||
*(*uintptr)(unsafe.Pointer(result)) = 0
|
||
return errno.ERANGE
|
||
}
|
||
}
|
||
|
||
if sc.Err() != nil {
|
||
panic(todo(""))
|
||
}
|
||
|
||
*(*uintptr)(unsafe.Pointer(result)) = 0
|
||
return 0
|
||
}
|
||
|
||
func init() {
|
||
atExit = append(atExit, func() { closeGroup(&staticGetgrgid) })
|
||
}
|
||
|
||
var staticGetgrgid grp.Group
|
||
|
||
// struct group *getgrgid(gid_t gid);
|
||
func Xgetgrgid(t *TLS, gid uint32) uintptr {
|
||
f, err := os.Open("/etc/group")
|
||
if err != nil {
|
||
panic(todo(""))
|
||
}
|
||
|
||
defer f.Close()
|
||
|
||
sid := strconv.Itoa(int(gid))
|
||
sc := bufio.NewScanner(f)
|
||
for sc.Scan() {
|
||
s := strings.TrimSpace(sc.Text())
|
||
if s == "" || strings.HasPrefix(s, "#") {
|
||
continue
|
||
}
|
||
|
||
// eg. "root:x:0:"
|
||
a := strings.Split(s, ":")
|
||
if len(a) < 4 {
|
||
panic(todo("%q", s))
|
||
}
|
||
|
||
if a[2] == sid {
|
||
closeGroup(&staticGetgrgid)
|
||
var names []string
|
||
if a[3] != "" {
|
||
names = strings.Split(a[3], ",")
|
||
}
|
||
initGroup(t, &staticGetgrgid, a[0], a[1], gid, names)
|
||
return uintptr(unsafe.Pointer(&staticGetgrgid))
|
||
}
|
||
}
|
||
|
||
if sc.Err() != nil {
|
||
panic(todo(""))
|
||
}
|
||
|
||
return 0
|
||
}
|
||
|
||
// int getgrgid_r(gid_t gid, struct group *grp, char *buf, size_t buflen, struct group **result);
|
||
func Xgetgrgid_r(t *TLS, gid uint32, pGrp, buf uintptr, buflen types.Size_t, result uintptr) int32 {
|
||
f, err := os.Open("/etc/group")
|
||
if err != nil {
|
||
panic(todo(""))
|
||
}
|
||
|
||
defer f.Close()
|
||
|
||
sid := strconv.Itoa(int(gid))
|
||
sc := bufio.NewScanner(f)
|
||
for sc.Scan() {
|
||
s := strings.TrimSpace(sc.Text())
|
||
if s == "" || strings.HasPrefix(s, "#") {
|
||
continue
|
||
}
|
||
|
||
// eg. "root:x:0:"
|
||
a := strings.Split(s, ":")
|
||
if len(a) < 4 {
|
||
panic(todo("%q", s))
|
||
}
|
||
|
||
if a[2] == sid {
|
||
var names []string
|
||
if a[3] != "" {
|
||
names = strings.Split(a[3], ",")
|
||
}
|
||
var x grp.Group
|
||
if initGroup2(buf, buflen, &x, a[0], a[1], gid, names) {
|
||
*(*grp.Group)(unsafe.Pointer(pGrp)) = x
|
||
*(*uintptr)(unsafe.Pointer(result)) = pGrp
|
||
return 0
|
||
}
|
||
|
||
*(*uintptr)(unsafe.Pointer(result)) = 0
|
||
return 0
|
||
}
|
||
}
|
||
|
||
if sc.Err() != nil {
|
||
panic(todo(""))
|
||
}
|
||
|
||
*(*uintptr)(unsafe.Pointer(result)) = 0
|
||
return 0
|
||
}
|
||
|
||
func initPasswd2(t *TLS, buf uintptr, buflen types.Size_t, p *pwd.Passwd, name, pwd string, uid, gid uint32, gecos, dir, shell string) bool {
|
||
p.Fpw_name, buf, buflen = bufString(buf, buflen, name)
|
||
if buf == 0 {
|
||
return false
|
||
}
|
||
|
||
p.Fpw_passwd, buf, buflen = bufString(buf, buflen, pwd)
|
||
if buf == 0 {
|
||
return false
|
||
}
|
||
|
||
p.Fpw_uid = uid
|
||
p.Fpw_gid = gid
|
||
if buf == 0 {
|
||
return false
|
||
}
|
||
|
||
p.Fpw_gecos, buf, buflen = bufString(buf, buflen, gecos)
|
||
if buf == 0 {
|
||
return false
|
||
}
|
||
|
||
p.Fpw_dir, buf, buflen = bufString(buf, buflen, dir)
|
||
if buf == 0 {
|
||
return false
|
||
}
|
||
|
||
p.Fpw_shell, buf, buflen = bufString(buf, buflen, shell)
|
||
if buf == 0 {
|
||
return false
|
||
}
|
||
|
||
return true
|
||
}
|
||
|
||
func bufString(buf uintptr, buflen types.Size_t, s string) (uintptr, uintptr, types.Size_t) {
|
||
buf0 := buf
|
||
rq := len(s) + 1
|
||
if rq > int(buflen) {
|
||
return 0, 0, 0
|
||
}
|
||
|
||
copy((*RawMem)(unsafe.Pointer(buf))[:len(s):len(s)], s)
|
||
buf += uintptr(len(s))
|
||
*(*byte)(unsafe.Pointer(buf)) = 0
|
||
return buf0, buf + 1, buflen - types.Size_t(rq)
|
||
}
|
||
|
||
func closeGroup(p *grp.Group) {
|
||
Xfree(nil, p.Fgr_name)
|
||
Xfree(nil, p.Fgr_passwd)
|
||
if p := p.Fgr_mem; p != 0 {
|
||
for {
|
||
q := *(*uintptr)(unsafe.Pointer(p))
|
||
if q == 0 {
|
||
break
|
||
}
|
||
|
||
Xfree(nil, q)
|
||
p += unsafe.Sizeof(uintptr(0))
|
||
}
|
||
}
|
||
*p = grp.Group{}
|
||
}
|
||
|
||
func initGroup(t *TLS, p *grp.Group, name, pwd string, gid uint32, names []string) {
|
||
p.Fgr_name = cString(t, name)
|
||
p.Fgr_passwd = cString(t, pwd)
|
||
p.Fgr_gid = gid
|
||
a := Xcalloc(t, 1, types.Size_t(unsafe.Sizeof(uintptr(0)))*types.Size_t((len(names)+1)))
|
||
if a == 0 {
|
||
panic("OOM")
|
||
}
|
||
|
||
for p := a; len(names) != 0; p += unsafe.Sizeof(uintptr(0)) {
|
||
*(*uintptr)(unsafe.Pointer(p)) = cString(t, names[0])
|
||
names = names[1:]
|
||
}
|
||
p.Fgr_mem = a
|
||
}
|
||
|
||
func initGroup2(buf uintptr, buflen types.Size_t, p *grp.Group, name, pwd string, gid uint32, names []string) bool {
|
||
p.Fgr_name, buf, buflen = bufString(buf, buflen, name)
|
||
if buf == 0 {
|
||
return false
|
||
}
|
||
|
||
p.Fgr_passwd, buf, buflen = bufString(buf, buflen, pwd)
|
||
if buf == 0 {
|
||
return false
|
||
}
|
||
|
||
p.Fgr_gid = gid
|
||
rq := unsafe.Sizeof(uintptr(0)) * uintptr(len(names)+1)
|
||
if rq > uintptr(buflen) {
|
||
return false
|
||
}
|
||
|
||
a := buf
|
||
buf += rq
|
||
for ; len(names) != 0; buf += unsafe.Sizeof(uintptr(0)) {
|
||
if len(names[0])+1 > int(buflen) {
|
||
return false
|
||
}
|
||
|
||
*(*uintptr)(unsafe.Pointer(buf)), buf, buflen = bufString(buf, buflen, names[0])
|
||
names = names[1:]
|
||
}
|
||
*(*uintptr)(unsafe.Pointer(buf)) = 0
|
||
p.Fgr_mem = a
|
||
return true
|
||
}
|
||
|
||
func init() {
|
||
atExit = append(atExit, func() { closeGroup(&staticGetgrgid) })
|
||
}
|
||
|
||
var staticGetpwuid pwd.Passwd
|
||
|
||
func init() {
|
||
atExit = append(atExit, func() { closePasswd(&staticGetpwuid) })
|
||
}
|
||
|
||
func closePasswd(p *pwd.Passwd) {
|
||
Xfree(nil, p.Fpw_name)
|
||
Xfree(nil, p.Fpw_passwd)
|
||
Xfree(nil, p.Fpw_gecos)
|
||
Xfree(nil, p.Fpw_dir)
|
||
Xfree(nil, p.Fpw_shell)
|
||
*p = pwd.Passwd{}
|
||
}
|
||
|
||
var staticGetgrnam grp.Group
|
||
|
||
func init() {
|
||
atExit = append(atExit, func() { closeGroup(&staticGetgrnam) })
|
||
}
|
||
|
||
// struct passwd *getpwuid(uid_t uid);
|
||
func Xgetpwuid(t *TLS, uid uint32) uintptr {
|
||
f, err := os.Open("/etc/passwd")
|
||
if err != nil {
|
||
panic(todo("", err))
|
||
}
|
||
|
||
defer f.Close()
|
||
|
||
sid := strconv.Itoa(int(uid))
|
||
sc := bufio.NewScanner(f)
|
||
for sc.Scan() {
|
||
s := strings.TrimSpace(sc.Text())
|
||
if len(s) == 0 || strings.HasPrefix(s, "#") {
|
||
continue
|
||
}
|
||
|
||
// eg. "root:x:0:0:root:/root:/bin/bash"
|
||
a := strings.Split(s, ":")
|
||
if len(a) < 7 {
|
||
panic(todo("%q", s))
|
||
}
|
||
|
||
if a[2] == sid {
|
||
uid, err := strconv.Atoi(a[2])
|
||
if err != nil {
|
||
panic(todo(""))
|
||
}
|
||
|
||
gid, err := strconv.Atoi(a[3])
|
||
if err != nil {
|
||
panic(todo(""))
|
||
}
|
||
|
||
closePasswd(&staticGetpwuid)
|
||
gecos := a[4]
|
||
if strings.Contains(gecos, ",") {
|
||
a := strings.Split(gecos, ",")
|
||
gecos = a[0]
|
||
}
|
||
initPasswd(t, &staticGetpwuid, a[0], a[1], uint32(uid), uint32(gid), gecos, a[5], a[6])
|
||
return uintptr(unsafe.Pointer(&staticGetpwuid))
|
||
}
|
||
}
|
||
|
||
if sc.Err() != nil {
|
||
panic(todo(""))
|
||
}
|
||
|
||
return 0
|
||
}
|
||
|
||
func initPasswd(t *TLS, p *pwd.Passwd, name, pwd string, uid, gid uint32, gecos, dir, shell string) {
|
||
p.Fpw_name = cString(t, name)
|
||
p.Fpw_passwd = cString(t, pwd)
|
||
p.Fpw_uid = uid
|
||
p.Fpw_gid = gid
|
||
p.Fpw_gecos = cString(t, gecos)
|
||
p.Fpw_dir = cString(t, dir)
|
||
p.Fpw_shell = cString(t, shell)
|
||
}
|
||
|
||
// struct group *getgrnam(const char *name);
|
||
func Xgetgrnam(t *TLS, name uintptr) uintptr {
|
||
f, err := os.Open("/etc/group")
|
||
if err != nil {
|
||
panic(todo(""))
|
||
}
|
||
|
||
defer f.Close()
|
||
|
||
sname := GoString(name)
|
||
sc := bufio.NewScanner(f)
|
||
for sc.Scan() {
|
||
s := strings.TrimSpace(sc.Text())
|
||
if len(s) == 0 || strings.HasPrefix(s, "#") {
|
||
continue
|
||
}
|
||
|
||
// eg. "root:x:0:"
|
||
a := strings.Split(s, ":")
|
||
if len(a) < 4 {
|
||
panic(todo("%q", s))
|
||
}
|
||
|
||
if a[0] == sname {
|
||
closeGroup(&staticGetgrnam)
|
||
gid, err := strconv.Atoi(a[2])
|
||
if err != nil {
|
||
panic(todo(""))
|
||
}
|
||
|
||
var names []string
|
||
if a[3] != "" {
|
||
names = strings.Split(a[3], ",")
|
||
}
|
||
initGroup(t, &staticGetgrnam, a[0], a[1], uint32(gid), names)
|
||
return uintptr(unsafe.Pointer(&staticGetgrnam))
|
||
}
|
||
}
|
||
|
||
if sc.Err() != nil {
|
||
panic(todo(""))
|
||
}
|
||
|
||
return 0
|
||
}
|
||
|
||
// int getgrnam_r(const char *name, struct group *grp, char *buf, size_t buflen, struct group **result);
|
||
func Xgetgrnam_r(t *TLS, name, pGrp, buf uintptr, buflen types.Size_t, result uintptr) int32 {
|
||
f, err := os.Open("/etc/group")
|
||
if err != nil {
|
||
panic(todo(""))
|
||
}
|
||
|
||
defer f.Close()
|
||
|
||
sname := GoString(name)
|
||
sc := bufio.NewScanner(f)
|
||
for sc.Scan() {
|
||
s := strings.TrimSpace(sc.Text())
|
||
if len(s) == 0 || strings.HasPrefix(s, "#") {
|
||
continue
|
||
}
|
||
|
||
// eg. "root:x:0:"
|
||
a := strings.Split(s, ":")
|
||
if len(a) < 4 {
|
||
panic(todo("%q", s))
|
||
}
|
||
|
||
if a[0] == sname {
|
||
gid, err := strconv.Atoi(a[2])
|
||
if err != nil {
|
||
panic(todo(""))
|
||
}
|
||
|
||
var names []string
|
||
if a[3] != "" {
|
||
names = strings.Split(a[3], ",")
|
||
}
|
||
var x grp.Group
|
||
if initGroup2(buf, buflen, &x, a[0], a[1], uint32(gid), names) {
|
||
*(*grp.Group)(unsafe.Pointer(pGrp)) = x
|
||
*(*uintptr)(unsafe.Pointer(result)) = pGrp
|
||
return 0
|
||
}
|
||
|
||
*(*uintptr)(unsafe.Pointer(result)) = 0
|
||
return 0
|
||
}
|
||
}
|
||
|
||
if sc.Err() != nil {
|
||
panic(todo(""))
|
||
}
|
||
|
||
*(*uintptr)(unsafe.Pointer(result)) = 0
|
||
return 0
|
||
}
|
||
|
||
// int getpwuid_r(uid_t uid, struct passwd *pwd, char *buf, size_t buflen, struct passwd **result);
|
||
func Xgetpwuid_r(t *TLS, uid types.Uid_t, cpwd, buf uintptr, buflen types.Size_t, result uintptr) int32 {
|
||
f, err := os.Open("/etc/passwd")
|
||
if err != nil {
|
||
panic(todo("", err))
|
||
}
|
||
|
||
defer f.Close()
|
||
|
||
sid := strconv.Itoa(int(uid))
|
||
sc := bufio.NewScanner(f)
|
||
for sc.Scan() {
|
||
s := strings.TrimSpace(sc.Text())
|
||
if len(s) == 0 || strings.HasPrefix(s, "#") {
|
||
continue
|
||
}
|
||
|
||
// eg. "root:x:0:0:root:/root:/bin/bash"
|
||
a := strings.Split(s, ":")
|
||
if len(a) < 7 {
|
||
panic(todo("%q", s))
|
||
}
|
||
|
||
if a[2] == sid {
|
||
uid, err := strconv.Atoi(a[2])
|
||
if err != nil {
|
||
panic(todo(""))
|
||
}
|
||
|
||
gid, err := strconv.Atoi(a[3])
|
||
if err != nil {
|
||
panic(todo(""))
|
||
}
|
||
|
||
gecos := a[4]
|
||
if strings.Contains(gecos, ",") {
|
||
a := strings.Split(gecos, ",")
|
||
gecos = a[0]
|
||
}
|
||
var v pwd.Passwd
|
||
if initPasswd2(t, buf, buflen, &v, a[0], a[1], uint32(uid), uint32(gid), gecos, a[5], a[6]) {
|
||
*(*pwd.Passwd)(unsafe.Pointer(cpwd)) = v
|
||
*(*uintptr)(unsafe.Pointer(result)) = cpwd
|
||
return 0
|
||
}
|
||
|
||
*(*uintptr)(unsafe.Pointer(result)) = 0
|
||
return errno.ERANGE
|
||
}
|
||
}
|
||
|
||
if sc.Err() != nil {
|
||
panic(todo(""))
|
||
}
|
||
|
||
*(*uintptr)(unsafe.Pointer(result)) = 0
|
||
return 0
|
||
}
|
||
|
||
// int mkostemp(char *template, int flags);
|
||
func Xmkostemp(t *TLS, template uintptr, flags int32) int32 {
|
||
len := uintptr(Xstrlen(t, template))
|
||
x := template + uintptr(len-6)
|
||
for i := uintptr(0); i < 6; i++ {
|
||
if *(*byte)(unsafe.Pointer(x + i)) != 'X' {
|
||
t.setErrno(errno.EINVAL)
|
||
return -1
|
||
}
|
||
}
|
||
|
||
fd, err := tempFile(template, x, flags)
|
||
if err != nil {
|
||
t.setErrno(err)
|
||
return -1
|
||
}
|
||
|
||
return int32(fd)
|
||
}
|
||
|
||
// void uuid_generate_random(uuid_t out);
|
||
func Xuuid_generate_random(t *TLS, out uintptr) {
|
||
x := guuid.New()
|
||
copy((*RawMem)(unsafe.Pointer(out))[:], x[:])
|
||
}
|
||
|
||
// void uuid_unparse(uuid_t uu, char *out);
|
||
func Xuuid_unparse(t *TLS, uu, out uintptr) {
|
||
s := (*guuid.UUID)(unsafe.Pointer(uu)).String()
|
||
copy((*RawMem)(unsafe.Pointer(out))[:], s)
|
||
*(*byte)(unsafe.Pointer(out + uintptr(len(s)))) = 0
|
||
}
|
||
|
||
var staticRandomData = &rand.Rand{}
|
||
|
||
// char *initstate(unsigned seed, char *state, size_t size);
|
||
func Xinitstate(t *TLS, seed uint32, statebuf uintptr, statelen types.Size_t) uintptr {
|
||
staticRandomData = rand.New(rand.NewSource(int64(seed)))
|
||
return 0
|
||
}
|
||
|
||
// char *setstate(const char *state);
|
||
func Xsetstate(t *TLS, state uintptr) uintptr {
|
||
t.setErrno(errno.EINVAL) //TODO
|
||
return 0
|
||
}
|
||
|
||
// The initstate_r() function is like initstate(3) except that it initializes
|
||
// the state in the object pointed to by buf, rather than initializing the
|
||
// global state variable. Before calling this function, the buf.state field
|
||
// must be initialized to NULL. The initstate_r() function records a pointer
|
||
// to the statebuf argument inside the structure pointed to by buf. Thus,
|
||
// state‐ buf should not be deallocated so long as buf is still in use. (So,
|
||
// statebuf should typically be allocated as a static variable, or allocated on
|
||
// the heap using malloc(3) or similar.)
|
||
//
|
||
// char *initstate_r(unsigned int seed, char *statebuf, size_t statelen, struct random_data *buf);
|
||
func Xinitstate_r(t *TLS, seed uint32, statebuf uintptr, statelen types.Size_t, buf uintptr) int32 {
|
||
if buf == 0 {
|
||
panic(todo(""))
|
||
}
|
||
|
||
randomDataMu.Lock()
|
||
|
||
defer randomDataMu.Unlock()
|
||
|
||
randomData[buf] = rand.New(rand.NewSource(int64(seed)))
|
||
return 0
|
||
}
|
||
|
||
var (
|
||
randomData = map[uintptr]*rand.Rand{}
|
||
randomDataMu sync.Mutex
|
||
)
|
||
|
||
// int mkstemps(char *template, int suffixlen);
|
||
func Xmkstemps(t *TLS, template uintptr, suffixlen int32) int32 {
|
||
return Xmkstemps64(t, template, suffixlen)
|
||
}
|
||
|
||
// int mkstemps(char *template, int suffixlen);
|
||
func Xmkstemps64(t *TLS, template uintptr, suffixlen int32) int32 {
|
||
len := uintptr(Xstrlen(t, template))
|
||
x := template + uintptr(len-6) - uintptr(suffixlen)
|
||
for i := uintptr(0); i < 6; i++ {
|
||
if *(*byte)(unsafe.Pointer(x + i)) != 'X' {
|
||
t.setErrno(errno.EINVAL)
|
||
return -1
|
||
}
|
||
}
|
||
|
||
fd, err := tempFile(template, x, 0)
|
||
if err != nil {
|
||
t.setErrno(err)
|
||
return -1
|
||
}
|
||
|
||
return int32(fd)
|
||
}
|
||
|
||
// int mkstemp(char *template);
|
||
func Xmkstemp(t *TLS, template uintptr) int32 {
|
||
return Xmkstemp64(t, template)
|
||
}
|
||
|
||
// int mkstemp(char *template);
|
||
func Xmkstemp64(t *TLS, template uintptr) int32 {
|
||
return Xmkstemps64(t, template, 0)
|
||
}
|
||
|
||
// int random_r(struct random_data *buf, int32_t *result);
|
||
func Xrandom_r(t *TLS, buf, result uintptr) int32 {
|
||
randomDataMu.Lock()
|
||
|
||
defer randomDataMu.Unlock()
|
||
|
||
mr := randomData[buf]
|
||
if stdlib.RAND_MAX != math.MaxInt32 {
|
||
panic(todo(""))
|
||
}
|
||
*(*int32)(unsafe.Pointer(result)) = mr.Int31()
|
||
return 0
|
||
}
|
||
|
||
// int strerror_r(int errnum, char *buf, size_t buflen);
|
||
func Xstrerror_r(t *TLS, errnum int32, buf uintptr, buflen size_t) int32 {
|
||
panic(todo(""))
|
||
}
|
||
|
||
// void endpwent(void);
|
||
func Xendpwent(t *TLS) {
|
||
// nop
|
||
}
|
||
|
||
var ctimeStaticBuf [32]byte
|
||
|
||
// char *ctime(const time_t *timep);
|
||
func Xctime(t *TLS, timep uintptr) uintptr {
|
||
return Xctime_r(t, timep, uintptr(unsafe.Pointer(&ctimeStaticBuf[0])))
|
||
}
|
||
|
||
// char *ctime_r(const time_t *timep, char *buf);
|
||
func Xctime_r(t *TLS, timep, buf uintptr) uintptr {
|
||
ut := *(*ctime.Time_t)(unsafe.Pointer(timep))
|
||
tm := time.Unix(int64(ut), 0).Local()
|
||
s := tm.Format(time.ANSIC) + "\n\x00"
|
||
copy((*RawMem)(unsafe.Pointer(buf))[:26:26], s)
|
||
return buf
|
||
}
|
||
|
||
// ssize_t pread(int fd, void *buf, size_t count, off_t offset);
|
||
func Xpread(t *TLS, fd int32, buf uintptr, count types.Size_t, offset types.Off_t) types.Ssize_t {
|
||
var n int
|
||
var err error
|
||
switch {
|
||
case count == 0:
|
||
n, err = unix.Pread(int(fd), nil, int64(offset))
|
||
default:
|
||
n, err = unix.Pread(int(fd), (*RawMem)(unsafe.Pointer(buf))[:count:count], int64(offset))
|
||
if dmesgs && err == nil {
|
||
dmesg("%v: fd %v, off %#x, count %#x, n %#x\n%s", origin(1), fd, offset, count, n, hex.Dump((*RawMem)(unsafe.Pointer(buf))[:n:n]))
|
||
}
|
||
}
|
||
if err != nil {
|
||
if dmesgs {
|
||
dmesg("%v: %v FAIL", origin(1), err)
|
||
}
|
||
t.setErrno(err)
|
||
return -1
|
||
}
|
||
|
||
if dmesgs {
|
||
dmesg("%v: ok", origin(1))
|
||
}
|
||
return types.Ssize_t(n)
|
||
}
|