| 1 |
#ifdef __sun |
| 2 |
#define _XOPEN_SOURCE 1 |
| 3 |
#define _XOPEN_SOURCE_EXTENDED 1 |
| 4 |
#define __EXTENSIONS__ 1 |
| 5 |
#endif |
| 6 |
|
| 7 |
#include "EXTERN.h" |
| 8 |
#include "perl.h" |
| 9 |
#include "XSUB.h" |
| 10 |
|
| 11 |
#if WIN32 |
| 12 |
|
| 13 |
/* perl probably did this already */ |
| 14 |
#include <windows.h> |
| 15 |
|
| 16 |
#elif __CYGWIN__ |
| 17 |
|
| 18 |
#include <windows.h> |
| 19 |
#include <io.h> |
| 20 |
#include <sys/cygwin.h> |
| 21 |
|
| 22 |
#define ioctlsocket(a,b,c) ioctl (a, b, c) |
| 23 |
#define _open_osfhandle(h,m) cygwin_attach_handle_to_fd ("/dev/tcp", -1, (HANDLE)h, 1, GENERIC_READ | GENERIC_WRITE) |
| 24 |
typedef int SOCKET; |
| 25 |
|
| 26 |
#else |
| 27 |
|
| 28 |
#include <stddef.h> // needed by broken bsds for NULL used in sys/uio.h |
| 29 |
#include <stdlib.h> |
| 30 |
#include <errno.h> |
| 31 |
|
| 32 |
/* send_fd/recv_fd taken from libptytty */ |
| 33 |
#include <sys/types.h> |
| 34 |
#include <sys/uio.h> |
| 35 |
#include <sys/socket.h> |
| 36 |
|
| 37 |
#ifndef CMSG_SPACE |
| 38 |
# define CMSG_SPACE(len) (sizeof (cmsghdr) + len) |
| 39 |
#endif |
| 40 |
|
| 41 |
#ifndef CMSG_LEN |
| 42 |
# define CMSG_LEN(len) (sizeof (cmsghdr) + len) |
| 43 |
#endif |
| 44 |
|
| 45 |
#endif |
| 46 |
|
| 47 |
#if defined(WIN32) |
| 48 |
/* the rub is this: win32 doesn't seem to have a way to query whether a socket */ |
| 49 |
/* is non-blocking or not. so we assume it is blocking, make it so if it isn't */ |
| 50 |
/* and reset it afterwards */ |
| 51 |
static int |
| 52 |
rw (int wr, int fd, char *buf, int len) |
| 53 |
{ |
| 54 |
u_long nbio = 0; |
| 55 |
int got = 0; |
| 56 |
|
| 57 |
while (got != len) |
| 58 |
{ |
| 59 |
int sze = wr |
| 60 |
? send ((SOCKET)fd, buf, len, 0) /* we assume send and recv are macros with arguments */ |
| 61 |
: recv ((SOCKET)fd, buf, len, 0); /* to be on the safe side */ |
| 62 |
|
| 63 |
if (sze <= 0) |
| 64 |
{ |
| 65 |
if (errno == EAGAIN || errno == WSAEWOULDBLOCK) |
| 66 |
{ |
| 67 |
ioctlsocket (fd, FIONBIO, &nbio); |
| 68 |
nbio = 1; |
| 69 |
} |
| 70 |
else |
| 71 |
break; |
| 72 |
} |
| 73 |
else |
| 74 |
got += sze; |
| 75 |
} |
| 76 |
|
| 77 |
if (nbio) |
| 78 |
ioctlsocket (fd, FIONBIO, &nbio); |
| 79 |
|
| 80 |
return got == len; |
| 81 |
} |
| 82 |
#endif |
| 83 |
|
| 84 |
static int |
| 85 |
fd_send (int socket, int fd) |
| 86 |
{ |
| 87 |
#if defined(WIN32) |
| 88 |
DWORD pid; |
| 89 |
HANDLE target, h; |
| 90 |
|
| 91 |
/* seriously, there is no way to query whether a socket is non-blocking?? */ |
| 92 |
if (!rw (0, socket, (char *)&pid, sizeof (pid))) |
| 93 |
return 0; |
| 94 |
|
| 95 |
target = OpenProcess (PROCESS_DUP_HANDLE, FALSE, pid); |
| 96 |
if (!target) |
| 97 |
croak ("AnyEvent::ProcessPool::fd_recv: OpenProcess failed"); |
| 98 |
|
| 99 |
if (!DuplicateHandle ((HANDLE)-1, (HANDLE)_get_osfhandle (fd), target, &h, 0, FALSE, DUPLICATE_SAME_ACCESS)) |
| 100 |
croak ("AnyEvent::ProcessPool::fd_recv: DuplicateHandle failed"); |
| 101 |
|
| 102 |
CloseHandle (target); |
| 103 |
|
| 104 |
if (!rw (1, socket, (char *)&h , sizeof (h ))) |
| 105 |
return 0; |
| 106 |
|
| 107 |
return 1; |
| 108 |
|
| 109 |
#else |
| 110 |
void *buf = malloc (CMSG_SPACE (sizeof (int))); |
| 111 |
|
| 112 |
if (!buf) |
| 113 |
return 0; |
| 114 |
|
| 115 |
struct msghdr msg; |
| 116 |
struct iovec iov; |
| 117 |
struct cmsghdr *cmsg; |
| 118 |
char data = 0; |
| 119 |
|
| 120 |
iov.iov_base = &data; |
| 121 |
iov.iov_len = 1; |
| 122 |
|
| 123 |
msg.msg_name = 0; |
| 124 |
msg.msg_namelen = 0; |
| 125 |
msg.msg_iov = &iov; |
| 126 |
msg.msg_iovlen = 1; |
| 127 |
msg.msg_control = buf; |
| 128 |
msg.msg_controllen = CMSG_SPACE (sizeof (int)); |
| 129 |
|
| 130 |
cmsg = CMSG_FIRSTHDR (&msg); |
| 131 |
cmsg->cmsg_level = SOL_SOCKET; |
| 132 |
cmsg->cmsg_type = SCM_RIGHTS; |
| 133 |
cmsg->cmsg_len = CMSG_LEN (sizeof (int)); |
| 134 |
|
| 135 |
*(int *)CMSG_DATA (cmsg) = fd; |
| 136 |
|
| 137 |
ssize_t result = sendmsg (socket, &msg, 0); |
| 138 |
|
| 139 |
free (buf); |
| 140 |
|
| 141 |
return result >= 0; |
| 142 |
#endif |
| 143 |
} |
| 144 |
|
| 145 |
static int |
| 146 |
fd_recv (int socket) |
| 147 |
{ |
| 148 |
#if defined(WIN32) |
| 149 |
DWORD pid = GetCurrentProcessId (); |
| 150 |
HANDLE h; |
| 151 |
|
| 152 |
if (!rw (1, socket, (char *)&pid, sizeof (pid))) |
| 153 |
return -1; |
| 154 |
|
| 155 |
if (!rw (0, socket, (char *)&h , sizeof (h ))) |
| 156 |
return -1; |
| 157 |
|
| 158 |
return _open_osfhandle ((intptr_t)h, 0); |
| 159 |
#else |
| 160 |
void *buf = malloc (CMSG_SPACE (sizeof (int))); |
| 161 |
|
| 162 |
if (!buf) |
| 163 |
return -1; |
| 164 |
|
| 165 |
struct msghdr msg; |
| 166 |
struct iovec iov; |
| 167 |
char data = 1; |
| 168 |
|
| 169 |
iov.iov_base = &data; |
| 170 |
iov.iov_len = 1; |
| 171 |
|
| 172 |
msg.msg_name = 0; |
| 173 |
msg.msg_namelen = 0; |
| 174 |
msg.msg_iov = &iov; |
| 175 |
msg.msg_iovlen = 1; |
| 176 |
msg.msg_control = buf; |
| 177 |
msg.msg_controllen = CMSG_SPACE (sizeof (int)); |
| 178 |
|
| 179 |
if (recvmsg (socket, &msg, 0) <= 0) |
| 180 |
return -1; |
| 181 |
|
| 182 |
int fd = -1; |
| 183 |
|
| 184 |
errno = EDOM; |
| 185 |
|
| 186 |
if ( |
| 187 |
data == 0 |
| 188 |
#if __OpenBSD__ |
| 189 |
&& msg.msg_controllen >= CMSG_LEN (sizeof (int)) /* work around a bug in at least openbsd 4.5 and 4.8 */ |
| 190 |
#else |
| 191 |
&& msg.msg_controllen >= CMSG_SPACE (sizeof (int)) |
| 192 |
#endif |
| 193 |
) { |
| 194 |
struct cmsghdr *cmsg = CMSG_FIRSTHDR (&msg); |
| 195 |
|
| 196 |
if (cmsg->cmsg_level == SOL_SOCKET |
| 197 |
&& cmsg->cmsg_type == SCM_RIGHTS |
| 198 |
&& cmsg->cmsg_len >= CMSG_LEN (sizeof (int))) |
| 199 |
fd = *(int *)CMSG_DATA (cmsg); |
| 200 |
} |
| 201 |
|
| 202 |
free (buf); |
| 203 |
|
| 204 |
return fd; |
| 205 |
#endif |
| 206 |
} |
| 207 |
|
| 208 |
MODULE = IO::FDPass PACKAGE = IO::FDPass PREFIX = fd_ |
| 209 |
|
| 210 |
PROTOTYPES: DISABLE |
| 211 |
|
| 212 |
int |
| 213 |
fd_send (int socket, int fd) |
| 214 |
|
| 215 |
int |
| 216 |
fd_recv (int socket) |
| 217 |
|
