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newlib-cygwin/winsup/cygwin/net.cc

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/* net.cc: network-related routines.
Copyright 1996, 1997, 1998, 1999, 2000, 2001 Cygnus Solutions.
This file is part of Cygwin.
This software is a copyrighted work licensed under the terms of the
Cygwin license. Please consult the file "CYGWIN_LICENSE" for
details. */
/* #define DEBUG_NEST_ON 1 */
#define __INSIDE_CYGWIN_NET__
#include "winsup.h"
#include <errno.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <iphlpapi.h>
#include <stdlib.h>
#include <unistd.h>
#include <netdb.h>
#include <fcntl.h>
#define USE_SYS_TYPES_FD_SET
#include <winsock2.h>
#include "cygerrno.h"
#include "security.h"
#include "fhandler.h"
#include "path.h"
#include "dtable.h"
#include "cygheap.h"
#include "sync.h"
#include "sigproc.h"
#include "pinfo.h"
#include "registry.h"
extern "C" {
int h_errno;
int __stdcall rcmd (char **ahost, unsigned short inport, char *locuser,
char *remuser, char *cmd, SOCKET *fd2p);
int __stdcall rexec (char **ahost, unsigned short inport, char *locuser,
char *password, char *cmd, SOCKET *fd2p);
int __stdcall rresvport (int *);
int sscanf (const char *, const char *, ...);
} /* End of "C" section */
class wsock_event
{
WSAEVENT event;
WSAOVERLAPPED ovr;
public:
wsock_event () : event (NULL) {};
~wsock_event ()
{
if (event)
WSACloseEvent (event);
event = NULL;
};
LPWSAOVERLAPPED prepare ();
int wait (int socket, LPDWORD flags);
};
LPWSAOVERLAPPED
wsock_event::prepare ()
{
LPWSAOVERLAPPED ret = NULL;
SetLastError (0);
if ((event = WSACreateEvent ()) != WSA_INVALID_EVENT)
{
memset (&ovr, 0, sizeof ovr);
ovr.hEvent = event;
ret = &ovr;
}
else if (GetLastError () == ERROR_PROC_NOT_FOUND) /* winsock2 not available */
WSASetLastError (0);
debug_printf ("%d = wsock_event::prepare ()", ret);
return ret;
}
int
wsock_event::wait (int socket, LPDWORD flags)
{
int ret = -1;
WSAEVENT ev[2] = { event, signal_arrived };
switch (WSAWaitForMultipleEvents(2, ev, FALSE, WSA_INFINITE, FALSE))
{
case WSA_WAIT_EVENT_0:
DWORD len;
if (WSAGetOverlappedResult(socket, &ovr, &len, FALSE, flags))
ret = (int) len;
break;
case WSA_WAIT_EVENT_0 + 1:
if (!CancelIo ((HANDLE)socket))
{
debug_printf ("CancelIo() %E, fallback to blocking io");
WSAGetOverlappedResult(socket, &ovr, &len, TRUE, flags);
}
else
WSASetLastError (WSAEINTR);
break;
case WSA_WAIT_FAILED:
break;
default: /* Should be impossible. *LOL* */
WSASetLastError (WSAEFAULT);
break;
}
WSACloseEvent (event);
event = NULL;
return ret;
}
WSADATA wsadata;
/* Cygwin internal */
static SOCKET __stdcall
set_socket_inheritance (SOCKET sock)
{
if (iswinnt)
(void) SetHandleInformation ((HANDLE) sock, HANDLE_FLAG_INHERIT, HANDLE_FLAG_INHERIT);
else
{
SOCKET newsock;
if (!DuplicateHandle (hMainProc, (HANDLE) sock, hMainProc, (HANDLE *) &newsock,
0, TRUE, DUPLICATE_SAME_ACCESS))
small_printf ("DuplicateHandle failed %E");
else
{
closesocket (sock);
sock = newsock;
}
}
return sock;
}
/* htonl: standards? */
extern "C" unsigned long int
htonl (unsigned long int x)
{
return ((((x & 0x000000ffU) << 24) |
((x & 0x0000ff00U) << 8) |
((x & 0x00ff0000U) >> 8) |
((x & 0xff000000U) >> 24)));
}
/* ntohl: standards? */
extern "C" unsigned long int
ntohl (unsigned long int x)
{
return htonl (x);
}
/* htons: standards? */
extern "C" unsigned short
htons (unsigned short x)
{
return ((((x & 0x000000ffU) << 8) |
((x & 0x0000ff00U) >> 8)));
}
/* ntohs: standards? */
extern "C" unsigned short
ntohs (unsigned short x)
{
return htons (x);
}
/* Cygwin internal */
static void
dump_protoent (struct protoent *p)
{
if (p)
debug_printf ("protoent %s %x %x", p->p_name, p->p_aliases, p->p_proto);
}
/* exported as inet_ntoa: BSD 4.3 */
extern "C" char *
cygwin_inet_ntoa (struct in_addr in)
{
#ifdef _MT_SAFE
#define ntoa_buf _reent_winsup ()->_ntoa_buf
#else
static char *ntoa_buf = NULL;
#endif
char *res = inet_ntoa (in);
if (ntoa_buf)
{
free (ntoa_buf);
ntoa_buf = NULL;
}
if (res)
ntoa_buf = strdup (res);
return ntoa_buf;
}
/* exported as inet_addr: BSD 4.3 */
extern "C" unsigned long
cygwin_inet_addr (const char *cp)
{
unsigned long res = inet_addr (cp);
return res;
}
/* exported as inet_aton: BSD 4.3
inet_aton is not exported by wsock32 and ws2_32,
so it has to be implemented here. */
extern "C" int
cygwin_inet_aton (const char *cp, struct in_addr *inp)
{
unsigned long res = inet_addr (cp);
if (res == INADDR_NONE && strcmp (cp, "255.255.255.255"))
return 0;
if (inp)
inp->s_addr = res;
return 1;
}
/* undocumented in wsock32.dll */
extern "C" unsigned int WINAPI inet_network (const char *);
extern "C" unsigned int
cygwin_inet_network (const char *cp)
{
unsigned int res = inet_network (cp);
return res;
}
/* inet_netof is in the standard BSD sockets library. It is useless
for modern networks, since it assumes network values which are no
longer meaningful, but some existing code calls it. */
extern "C" unsigned long
inet_netof (struct in_addr in)
{
unsigned long i, res;
i = ntohl (in.s_addr);
if (IN_CLASSA (i))
res = (i & IN_CLASSA_NET) >> IN_CLASSA_NSHIFT;
else if (IN_CLASSB (i))
res = (i & IN_CLASSB_NET) >> IN_CLASSB_NSHIFT;
else
res = (i & IN_CLASSC_NET) >> IN_CLASSC_NSHIFT;
return res;
}
/* inet_makeaddr is in the standard BSD sockets library. It is
useless for modern networks, since it assumes network values which
are no longer meaningful, but some existing code calls it. */
extern "C" struct in_addr
inet_makeaddr (int net, int lna)
{
unsigned long i;
struct in_addr in;
if (net < IN_CLASSA_MAX)
i = (net << IN_CLASSA_NSHIFT) | (lna & IN_CLASSA_HOST);
else if (net < IN_CLASSB_MAX)
i = (net << IN_CLASSB_NSHIFT) | (lna & IN_CLASSB_HOST);
else if (net < 0x1000000)
i = (net << IN_CLASSC_NSHIFT) | (lna & IN_CLASSC_HOST);
else
i = net | lna;
in.s_addr = htonl (i);
return in;
}
struct tl
{
int w;
const char *s;
int e;
};
static NO_COPY struct tl errmap[] =
{
{WSAEINTR, "WSAEINTR", EINTR},
{WSAEWOULDBLOCK, "WSAEWOULDBLOCK", EWOULDBLOCK},
{WSAEINPROGRESS, "WSAEINPROGRESS", EINPROGRESS},
{WSAEALREADY, "WSAEALREADY", EALREADY},
{WSAENOTSOCK, "WSAENOTSOCK", ENOTSOCK},
{WSAEDESTADDRREQ, "WSAEDESTADDRREQ", EDESTADDRREQ},
{WSAEMSGSIZE, "WSAEMSGSIZE", EMSGSIZE},
{WSAEPROTOTYPE, "WSAEPROTOTYPE", EPROTOTYPE},
{WSAENOPROTOOPT, "WSAENOPROTOOPT", ENOPROTOOPT},
{WSAEPROTONOSUPPORT, "WSAEPROTONOSUPPORT", EPROTONOSUPPORT},
{WSAESOCKTNOSUPPORT, "WSAESOCKTNOSUPPORT", ESOCKTNOSUPPORT},
{WSAEOPNOTSUPP, "WSAEOPNOTSUPP", EOPNOTSUPP},
{WSAEPFNOSUPPORT, "WSAEPFNOSUPPORT", EPFNOSUPPORT},
{WSAEAFNOSUPPORT, "WSAEAFNOSUPPORT", EAFNOSUPPORT},
{WSAEADDRINUSE, "WSAEADDRINUSE", EADDRINUSE},
{WSAEADDRNOTAVAIL, "WSAEADDRNOTAVAIL", EADDRNOTAVAIL},
{WSAENETDOWN, "WSAENETDOWN", ENETDOWN},
{WSAENETUNREACH, "WSAENETUNREACH", ENETUNREACH},
{WSAENETRESET, "WSAENETRESET", ENETRESET},
{WSAECONNABORTED, "WSAECONNABORTED", ECONNABORTED},
{WSAECONNRESET, "WSAECONNRESET", ECONNRESET},
{WSAENOBUFS, "WSAENOBUFS", ENOBUFS},
{WSAEISCONN, "WSAEISCONN", EISCONN},
{WSAENOTCONN, "WSAENOTCONN", ENOTCONN},
{WSAESHUTDOWN, "WSAESHUTDOWN", ESHUTDOWN},
{WSAETOOMANYREFS, "WSAETOOMANYREFS", ETOOMANYREFS},
{WSAETIMEDOUT, "WSAETIMEDOUT", ETIMEDOUT},
{WSAECONNREFUSED, "WSAECONNREFUSED", ECONNREFUSED},
{WSAELOOP, "WSAELOOP", ELOOP},
{WSAENAMETOOLONG, "WSAENAMETOOLONG", ENAMETOOLONG},
{WSAEHOSTDOWN, "WSAEHOSTDOWN", EHOSTDOWN},
{WSAEHOSTUNREACH, "WSAEHOSTUNREACH", EHOSTUNREACH},
{WSAENOTEMPTY, "WSAENOTEMPTY", ENOTEMPTY},
{WSAEPROCLIM, "WSAEPROCLIM", EPROCLIM},
{WSAEUSERS, "WSAEUSERS", EUSERS},
{WSAEDQUOT, "WSAEDQUOT", EDQUOT},
{WSAESTALE, "WSAESTALE", ESTALE},
{WSAEREMOTE, "WSAEREMOTE", EREMOTE},
{WSAEINVAL, "WSAEINVAL", EINVAL},
{WSAEFAULT, "WSAEFAULT", EFAULT},
{0, "NOERROR", 0},
{0, NULL, 0}
};
static int
find_winsock_errno (int why)
{
for (int i = 0; errmap[i].s != NULL; ++i)
if (why == errmap[i].w)
return errmap[i].e;
return EPERM;
}
/* Cygwin internal */
void
__set_winsock_errno (const char *fn, int ln)
{
DWORD werr = WSAGetLastError ();
int err = find_winsock_errno (werr);
set_errno (err);
syscall_printf ("%s:%d - winsock error %d -> errno %d", fn, ln, werr, err);
}
/*
* Since the member `s' isn't used for debug output we can use it
* for the error text returned by herror and hstrerror.
*/
const static NO_COPY struct tl host_errmap[] =
{
{WSAHOST_NOT_FOUND, "Unknown host", HOST_NOT_FOUND},
{WSATRY_AGAIN, "Host name lookup failure", TRY_AGAIN},
{WSANO_RECOVERY, "Unknown server error", NO_RECOVERY},
{WSANO_DATA, "No address associated with name", NO_DATA},
{0, NULL, 0}
};
/* Cygwin internal */
static void
set_host_errno ()
{
int i;
int why = WSAGetLastError ();
for (i = 0; host_errmap[i].w != 0; ++i)
if (why == host_errmap[i].w)
break;
if (host_errmap[i].w != 0)
h_errno = host_errmap[i].e;
else
h_errno = NETDB_INTERNAL;
}
static void
free_char_list (char **clist)
{
if (clist)
{
for (char **cl = clist; *cl; ++cl)
free (*cl);
free (clist);
}
}
static char **
dup_char_list (char **src)
{
char **dst;
int cnt = 0;
for (char **cl = src; *cl; ++cl)
++cnt;
if (!(dst = (char **) calloc (cnt + 1, sizeof *dst)))
return NULL;
while (cnt-- > 0)
if (!(dst[cnt] = strdup (src[cnt])))
return NULL;
return dst;
}
#define free_addr_list(addr_list) free_char_list (addr_list)
static char **
dup_addr_list (char **src, unsigned int size)
{
char **dst;
int cnt = 0;
for (char **cl = src; *cl; ++cl)
++cnt;
if (!(dst = (char **) calloc (cnt + 1, sizeof *dst)))
return NULL;
while (cnt-- > 0)
{
if (!(dst[cnt] = (char *) malloc(size)))
return NULL;
memcpy(dst[cnt], src[cnt], size);
}
return dst;
}
static void
free_protoent_ptr (struct protoent *&p)
{
if (p)
{
debug_printf ("protoent: %s", p->p_name);
if (p->p_name)
free (p->p_name);
free_char_list (p->p_aliases);
p = NULL;
}
}
static struct protoent *
dup_protoent_ptr (struct protoent *src)
{
if (!src)
return NULL;
struct protoent *dst = (struct protoent *) calloc (1, sizeof *dst);
if (!dst)
return NULL;
debug_printf ("protoent: %s", src->p_name);
dst->p_proto = src->p_proto;
if (src->p_name && !(dst->p_name = strdup (src->p_name)))
goto out;
if (src->p_aliases && !(dst->p_aliases = dup_char_list (src->p_aliases)))
goto out;
debug_printf ("protoent: copied %s", dst->p_name);
return dst;
out:
free_protoent_ptr (dst);
return NULL;
}
#ifdef _MT_SAFE
#define protoent_buf _reent_winsup ()->_protoent_buf
#else
static struct protoent *protoent_buf = NULL;
#endif
/* exported as getprotobyname: standards? */
extern "C" struct protoent *
cygwin_getprotobyname (const char *p)
{
free_protoent_ptr (protoent_buf);
protoent_buf = dup_protoent_ptr (getprotobyname (p));
if (!protoent_buf)
set_winsock_errno ();
dump_protoent (protoent_buf);
return protoent_buf;
}
/* exported as getprotobynumber: standards? */
extern "C" struct protoent *
cygwin_getprotobynumber (int number)
{
free_protoent_ptr (protoent_buf);
protoent_buf = dup_protoent_ptr (getprotobynumber (number));
if (!protoent_buf)
set_winsock_errno ();
dump_protoent (protoent_buf);
return protoent_buf;
}
fhandler_socket *
fdsock (int fd, const char *name, SOCKET soc)
{
if (wsadata.wVersion < 512) /* < Winsock 2.0 */
soc = set_socket_inheritance (soc);
fhandler_socket *fh = (fhandler_socket *) cygheap->fdtab.build_fhandler (fd, FH_SOCKET, name);
fh->set_io_handle ((HANDLE) soc);
fh->set_flags (O_RDWR);
cygheap->fdtab.inc_need_fixup_before ();
return fh;
}
/* exported as socket: standards? */
extern "C" int
cygwin_socket (int af, int type, int protocol)
{
int res = -1;
SetResourceLock (LOCK_FD_LIST, WRITE_LOCK|READ_LOCK, "socket");
SOCKET soc;
int fd = cygheap->fdtab.find_unused_handle ();
if (fd < 0)
set_errno (EMFILE);
else
{
debug_printf ("socket (%d, %d, %d)", af, type, protocol);
soc = socket (AF_INET, type, af == AF_UNIX ? 0 : protocol);
if (soc == INVALID_SOCKET)
{
set_winsock_errno ();
goto done;
}
const char *name;
if (af == AF_INET)
name = (type == SOCK_STREAM ? "/dev/tcp" : "/dev/udp");
else
name = (type == SOCK_STREAM ? "/dev/streamsocket" : "/dev/dgsocket");
fdsock (fd, name, soc)->set_addr_family (af);
res = fd;
}
done:
syscall_printf ("%d = socket (%d, %d, %d)", res, af, type, protocol);
ReleaseResourceLock (LOCK_FD_LIST, WRITE_LOCK|READ_LOCK, "socket");
return res;
}
/* cygwin internal: map sockaddr into internet domain address */
static int get_inet_addr (const struct sockaddr *in, int inlen,
struct sockaddr_in *out, int *outlen, int* secret = 0)
{
int secret_buf [4];
int* secret_ptr = (secret ? : secret_buf);
if (in->sa_family == AF_INET)
{
*out = * (sockaddr_in *)in;
*outlen = inlen;
return 1;
}
else if (in->sa_family == AF_UNIX)
{
int fd = _open (in->sa_data, O_RDONLY);
if (fd == -1)
return 0;
int ret = 0;
char buf[128];
memset (buf, 0, sizeof buf);
if (read (fd, buf, sizeof buf) != -1)
{
sockaddr_in sin;
sin.sin_family = AF_INET;
sscanf (buf + strlen (SOCKET_COOKIE), "%hu %08x-%08x-%08x-%08x",
&sin.sin_port,
secret_ptr, secret_ptr + 1, secret_ptr + 2, secret_ptr + 3);
sin.sin_port = htons (sin.sin_port);
sin.sin_addr.s_addr = htonl (INADDR_LOOPBACK);
*out = sin;
*outlen = sizeof sin;
ret = 1;
}
_close (fd);
return ret;
}
else
{
set_errno (EAFNOSUPPORT);
return 0;
}
}
/* exported as sendto: standards? */
extern "C" int
cygwin_sendto (int fd,
const void *buf,
int len,
unsigned int flags,
const struct sockaddr *to,
int tolen)
{
int res;
wsock_event wsock_evt;
LPWSAOVERLAPPED ovr;
fhandler_socket *h = (fhandler_socket *) cygheap->fdtab[fd];
sockaddr_in sin;
sigframe thisframe (mainthread);
if (get_inet_addr (to, tolen, &sin, &tolen) == 0)
return -1;
if (h->is_nonblocking () || !(ovr = wsock_evt.prepare ()))
{
debug_printf ("Fallback to winsock 1 sendto call");
if ((res = sendto (h->get_socket (), (const char *) buf, len, flags,
to, tolen)) == SOCKET_ERROR)
{
set_winsock_errno ();
res = -1;
}
}
else
{
WSABUF wsabuf = { len, (char *) buf };
DWORD ret = 0;
if (WSASendTo (h->get_socket (), &wsabuf, 1, &ret, (DWORD)flags,
to, tolen, ovr, NULL) != SOCKET_ERROR)
res = ret;
else if ((res = WSAGetLastError ()) != WSA_IO_PENDING)
{
set_winsock_errno ();
res = -1;
}
else if ((res = wsock_evt.wait (h->get_socket (), (DWORD *)&flags)) == -1)
set_winsock_errno ();
}
syscall_printf ("%d = sendto (%d, %x, %x, %x)", res, fd, buf, len, flags);
return res;
}
/* exported as recvfrom: standards? */
extern "C" int
cygwin_recvfrom (int fd,
char *buf,
int len,
int flags,
struct sockaddr *from,
int *fromlen)
{
int res;
wsock_event wsock_evt;
LPWSAOVERLAPPED ovr;
fhandler_socket *h = (fhandler_socket *) cygheap->fdtab[fd];
sigframe thisframe (mainthread);
if (h->is_nonblocking () ||!(ovr = wsock_evt.prepare ()))
{
debug_printf ("Fallback to winsock 1 recvfrom call");
if ((res = recvfrom (h->get_socket (), buf, len, flags, from, fromlen))
== SOCKET_ERROR)
{
set_winsock_errno ();
res = -1;
}
}
else
{
WSABUF wsabuf = { len, (char *) buf };
DWORD ret = 0;
if (WSARecvFrom (h->get_socket (), &wsabuf, 1, &ret, (DWORD *)&flags,
from, fromlen, ovr, NULL) != SOCKET_ERROR)
res = ret;
else if ((res = WSAGetLastError ()) != WSA_IO_PENDING)
{
set_winsock_errno ();
res = -1;
}
else if ((res = wsock_evt.wait (h->get_socket (), (DWORD *)&flags)) == -1)
set_winsock_errno ();
}
syscall_printf ("%d = recvfrom (%d, %x, %x, %x)", res, fd, buf, len, flags);
return res;
}
/* Cygwin internal */
fhandler_socket *
get (int fd)
{
if (cygheap->fdtab.not_open (fd))
{
set_errno (EINVAL);
return 0;
}
return cygheap->fdtab[fd]->is_socket ();
}
/* exported as setsockopt: standards? */
extern "C" int
cygwin_setsockopt (int fd,
int level,
int optname,
const void *optval,
int optlen)
{
fhandler_socket *h = get (fd);
int res = -1;
const char *name = "error";
if (h)
{
/* For the following debug_printf */
switch (optname)
{
case SO_DEBUG:
name="SO_DEBUG";
break;
case SO_ACCEPTCONN:
name="SO_ACCEPTCONN";
break;
case SO_REUSEADDR:
name="SO_REUSEADDR";
break;
case SO_KEEPALIVE:
name="SO_KEEPALIVE";
break;
case SO_DONTROUTE:
name="SO_DONTROUTE";
break;
case SO_BROADCAST:
name="SO_BROADCAST";
break;
case SO_USELOOPBACK:
name="SO_USELOOPBACK";
break;
case SO_LINGER:
name="SO_LINGER";
break;
case SO_OOBINLINE:
name="SO_OOBINLINE";
break;
case SO_ERROR:
name="SO_ERROR";
break;
}
res = setsockopt (h->get_socket (), level, optname,
(const char *) optval, optlen);
if (optlen == 4)
syscall_printf ("setsockopt optval=%x", *(long *) optval);
if (res)
set_winsock_errno ();
}
syscall_printf ("%d = setsockopt (%d, %d, %x (%s), %x, %d)",
res, fd, level, optname, name, optval, optlen);
return res;
}
/* exported as getsockopt: standards? */
extern "C" int
cygwin_getsockopt (int fd,
int level,
int optname,
void *optval,
int *optlen)
{
fhandler_socket *h = get (fd);
int res = -1;
const char *name = "error";
if (h)
{
/* For the following debug_printf */
switch (optname)
{
case SO_DEBUG:
name="SO_DEBUG";
break;
case SO_ACCEPTCONN:
name="SO_ACCEPTCONN";
break;
case SO_REUSEADDR:
name="SO_REUSEADDR";
break;
case SO_KEEPALIVE:
name="SO_KEEPALIVE";
break;
case SO_DONTROUTE:
name="SO_DONTROUTE";
break;
case SO_BROADCAST:
name="SO_BROADCAST";
break;
case SO_USELOOPBACK:
name="SO_USELOOPBACK";
break;
case SO_LINGER:
name="SO_LINGER";
break;
case SO_OOBINLINE:
name="SO_OOBINLINE";
break;
case SO_ERROR:
name="SO_ERROR";
break;
}
res = getsockopt (h->get_socket (), level, optname,
(char *) optval, (int *) optlen);
if (optname == SO_ERROR)
{
int *e = (int *) optval;
*e = find_winsock_errno (*e);
}
if (res)
set_winsock_errno ();
}
syscall_printf ("%d = getsockopt (%d, %d, %x (%s), %x, %d)",
res, fd, level, optname, name, optval, optlen);
return res;
}
/* exported as connect: standards? */
extern "C" int
cygwin_connect (int fd,
const struct sockaddr *name,
int namelen)
{
int res;
BOOL secret_check_failed = FALSE;
BOOL in_progress = FALSE;
fhandler_socket *sock = get (fd);
sockaddr_in sin;
int secret [4];
sigframe thisframe (mainthread);
if (get_inet_addr (name, namelen, &sin, &namelen, secret) == 0)
return -1;
if (!sock)
{
res = -1;
}
else
{
res = connect (sock->get_socket (), (sockaddr *) &sin, namelen);
if (res)
{
/* Special handling for connect to return the correct error code
when called on a non-blocking socket. */
if (sock->is_nonblocking ())
{
DWORD err = WSAGetLastError ();
if (err == WSAEWOULDBLOCK || err == WSAEALREADY)
{
WSASetLastError (WSAEINPROGRESS);
in_progress = TRUE;
}
else if (err == WSAEINVAL)
WSASetLastError (WSAEISCONN);
}
set_winsock_errno ();
}
if (sock->get_addr_family () == AF_UNIX)
{
if (!res || in_progress)
{
if (!sock->create_secret_event (secret))
{
secret_check_failed = TRUE;
}
else if (in_progress)
sock->signal_secret_event ();
}
if (!secret_check_failed && !res)
{
if (!sock->check_peer_secret_event (&sin, secret))
{
debug_printf ( "accept from unauthorized server" );
secret_check_failed = TRUE;
}
}
if (secret_check_failed)
{
sock->close_secret_event ();
if (res)
closesocket (res);
set_errno (ECONNREFUSED);
res = -1;
}
}
}
return res;
}
static void
free_servent_ptr (struct servent *&p)
{
if (p)
{
debug_printf ("servent: %s", p->s_name);
if (p->s_name)
free (p->s_name);
if (p->s_proto)
free (p->s_proto);
free_char_list (p->s_aliases);
p = NULL;
}
}
static struct servent *
dup_servent_ptr (struct servent *src)
{
if (!src)
return NULL;
struct servent *dst = (struct servent *) calloc (1, sizeof *dst);
if (!dst)
return NULL;
debug_printf ("servent: %s", src->s_name);
dst->s_port = src->s_port;
if (src->s_name && !(dst->s_name = strdup (src->s_name)))
goto out;
if (src->s_proto && !(dst->s_proto = strdup (src->s_proto)))
goto out;
if (src->s_aliases && !(dst->s_aliases = dup_char_list (src->s_aliases)))
goto out;
debug_printf ("servent: copied %s", dst->s_name);
return dst;
out:
free_servent_ptr (dst);
return NULL;
}
#ifdef _MT_SAFE
#define servent_buf _reent_winsup ()->_servent_buf
#else
static struct servent *servent_buf = NULL;
#endif
/* exported as getservbyname: standards? */
extern "C" struct servent *
cygwin_getservbyname (const char *name, const char *proto)
{
free_servent_ptr (servent_buf);
servent_buf = dup_servent_ptr (getservbyname (name, proto));
if (!servent_buf)
set_winsock_errno ();
syscall_printf ("%x = getservbyname (%s, %s)", servent_buf, name, proto);
return servent_buf;
}
/* exported as getservbyport: standards? */
extern "C" struct servent *
cygwin_getservbyport (int port, const char *proto)
{
free_servent_ptr (servent_buf);
servent_buf = dup_servent_ptr (getservbyport (port, proto));
if (!servent_buf)
set_winsock_errno ();
syscall_printf ("%x = getservbyport (%d, %s)", servent_buf, port, proto);
return servent_buf;
}
extern "C" int
cygwin_gethostname (char *name, size_t len)
{
int PASCAL win32_gethostname (char*, int);
if (wsock32_handle == NULL ||
win32_gethostname (name, len) == SOCKET_ERROR)
{
DWORD local_len = len;
if (!GetComputerNameA (name, &local_len))
{
set_winsock_errno ();
return -1;
}
}
debug_printf ("name %s\n", name);
h_errno = 0;
return 0;
}
static void
free_hostent_ptr (struct hostent *&p)
{
if (p)
{
debug_printf ("hostent: %s", p->h_name);
if (p->h_name)
free ((void *)p->h_name);
free_char_list (p->h_aliases);
free_addr_list (p->h_addr_list);
p = NULL;
}
}
static struct hostent *
dup_hostent_ptr (struct hostent *src)
{
if (!src)
return NULL;
struct hostent *dst = (struct hostent *) calloc (1, sizeof *dst);
if (!dst)
return NULL;
debug_printf ("hostent: %s", src->h_name);
dst->h_addrtype = src->h_addrtype;
dst->h_length = src->h_length;
if (src->h_name && !(dst->h_name = strdup (src->h_name)))
goto out;
if (src->h_aliases && !(dst->h_aliases = dup_char_list (src->h_aliases)))
goto out;
if (src->h_addr_list
&& !(dst->h_addr_list = dup_addr_list(src->h_addr_list, src->h_length)))
goto out;
debug_printf ("hostent: copied %s", dst->h_name);
return dst;
out:
free_hostent_ptr (dst);
return NULL;
}
#ifdef _MT_SAFE
#define hostent_buf _reent_winsup ()->_hostent_buf
#else
static struct hostent *hostent_buf = NULL;
#endif
/* exported as gethostbyname: standards? */
extern "C" struct hostent *
cygwin_gethostbyname (const char *name)
{
static unsigned char tmp_addr[4];
static struct hostent tmp;
static char *tmp_aliases[1];
static char *tmp_addr_list[2];
static int a, b, c, d;
if (sscanf (name, "%d.%d.%d.%d", &a, &b, &c, &d) == 4)
{
/* In case you don't have DNS, at least x.x.x.x still works */
memset (&tmp, 0, sizeof (tmp));
tmp_addr[0] = a;
tmp_addr[1] = b;
tmp_addr[2] = c;
tmp_addr[3] = d;
tmp_addr_list[0] = (char *)tmp_addr;
tmp.h_name = name;
tmp.h_aliases = tmp_aliases;
tmp.h_addrtype = 2;
tmp.h_length = 4;
tmp.h_addr_list = tmp_addr_list;
return &tmp;
}
free_hostent_ptr (hostent_buf);
hostent_buf = dup_hostent_ptr (gethostbyname (name));
if (!hostent_buf)
{
set_winsock_errno ();
set_host_errno ();
}
else
{
debug_printf ("h_name %s", hostent_buf->h_name);
h_errno = 0;
}
return hostent_buf;
}
/* exported as gethostbyaddr: standards? */
extern "C" struct hostent *
cygwin_gethostbyaddr (const char *addr, int len, int type)
{
free_hostent_ptr (hostent_buf);
hostent_buf = dup_hostent_ptr (gethostbyaddr (addr, len, type));
if (!hostent_buf)
{
set_winsock_errno ();
set_host_errno ();
}
else
{
debug_printf ("h_name %s", hostent_buf->h_name);
h_errno = 0;
}
return hostent_buf;
}
/* exported as accept: standards? */
extern "C" int
cygwin_accept (int fd, struct sockaddr *peer, int *len)
{
int res = -1;
BOOL secret_check_failed = FALSE;
BOOL in_progress = FALSE;
sigframe thisframe (mainthread);
fhandler_socket *sock = get (fd);
if (sock)
{
/* Allows NULL peer and len parameters. */
struct sockaddr_in peer_dummy;
int len_dummy;
if (!peer)
peer = (struct sockaddr *) &peer_dummy;
if (!len)
{
len_dummy = sizeof (struct sockaddr_in);
len = &len_dummy;
}
/* accept on NT fails if len < sizeof (sockaddr_in)
* some programs set len to
* sizeof (name.sun_family) + strlen (name.sun_path) for UNIX domain
*/
if (len && ((unsigned) *len < sizeof (struct sockaddr_in)))
*len = sizeof (struct sockaddr_in);
res = accept (sock->get_socket (), peer, len); // can't use a blocking call inside a lock
if ((SOCKET) res == (SOCKET) INVALID_SOCKET &&
WSAGetLastError () == WSAEWOULDBLOCK)
in_progress = TRUE;
if (sock->get_addr_family () == AF_UNIX)
{
if ((SOCKET) res != (SOCKET) INVALID_SOCKET || in_progress)
{
if (!sock->create_secret_event ())
secret_check_failed = TRUE;
else if (in_progress)
sock->signal_secret_event ();
}
if (!secret_check_failed &&
(SOCKET) res != (SOCKET) INVALID_SOCKET)
{
if (!sock->check_peer_secret_event ((struct sockaddr_in*) peer))
{
debug_printf ("connect from unauthorized client");
secret_check_failed = TRUE;
}
}
if (secret_check_failed)
{
sock->close_secret_event ();
if ((SOCKET) res != (SOCKET) INVALID_SOCKET)
closesocket (res);
set_errno (ECONNABORTED);
res = -1;
goto done;
}
}
SetResourceLock (LOCK_FD_LIST, WRITE_LOCK|READ_LOCK, "accept");
int res_fd = cygheap->fdtab.find_unused_handle ();
if (res_fd == -1)
{
/* FIXME: what is correct errno? */
set_errno (EMFILE);
goto lock_done;
}
if ((SOCKET) res == (SOCKET) INVALID_SOCKET)
set_winsock_errno ();
else
{
fhandler_socket* res_fh = fdsock (res_fd, sock->get_name (), res);
res_fh->set_addr_family (sock->get_addr_family ());
res = res_fd;
}
}
lock_done:
ReleaseResourceLock (LOCK_FD_LIST, WRITE_LOCK|READ_LOCK, "accept");
done:
syscall_printf ("%d = accept (%d, %x, %x)", res, fd, peer, len);
return res;
}
/* exported as bind: standards? */
extern "C" int
cygwin_bind (int fd, const struct sockaddr *my_addr, int addrlen)
{
int res = -1;
fhandler_socket *sock = get (fd);
if (sock)
{
if (my_addr->sa_family == AF_UNIX)
{
#define un_addr ((struct sockaddr_un *) my_addr)
struct sockaddr_in sin;
int len = sizeof sin;
int fd;
if (strlen (un_addr->sun_path) >= UNIX_PATH_LEN)
{
set_errno (ENAMETOOLONG);
goto out;
}
sin.sin_family = AF_INET;
sin.sin_port = 0;
sin.sin_addr.s_addr = htonl (INADDR_LOOPBACK);
if (bind (sock->get_socket (), (sockaddr *) &sin, len))
{
syscall_printf ("AF_UNIX: bind failed %d", get_errno ());
set_winsock_errno ();
goto out;
}
if (getsockname (sock->get_socket (), (sockaddr *) &sin, &len))
{
syscall_printf ("AF_UNIX: getsockname failed %d", get_errno ());
set_winsock_errno ();
goto out;
}
sin.sin_port = ntohs (sin.sin_port);
debug_printf ("AF_UNIX: socket bound to port %u", sin.sin_port);
/* bind must fail if file system socket object already exists
so _open () is called with O_EXCL flag. */
fd = _open (un_addr->sun_path,
O_WRONLY | O_CREAT | O_EXCL | O_BINARY,
0);
if (fd < 0)
{
if (get_errno () == EEXIST)
set_errno (EADDRINUSE);
goto out;
}
sock->set_connect_secret ();
char buf[sizeof (SOCKET_COOKIE) + 80];
__small_sprintf (buf, "%s%u ", SOCKET_COOKIE, sin.sin_port);
sock->get_connect_secret (strchr (buf, '\0'));
len = strlen (buf) + 1;
/* Note that the terminating nul is written. */
if (_write (fd, buf, len) != len)
{
save_errno here;
_close (fd);
_unlink (un_addr->sun_path);
}
else
{
_close (fd);
chmod (un_addr->sun_path,
(S_IFSOCK | S_IRWXU | S_IRWXG | S_IRWXO) & ~cygheap->umask);
res = 0;
}
#undef un_addr
}
else if (bind (sock->get_socket (), my_addr, addrlen))
set_winsock_errno ();
else
res = 0;
}
out:
syscall_printf ("%d = bind (%d, %x, %d)", res, fd, my_addr, addrlen);
return res;
}
/* exported as getsockname: standards? */
extern "C" int
cygwin_getsockname (int fd, struct sockaddr *addr, int *namelen)
{
int res = -1;
fhandler_socket *sock = get (fd);
if (sock)
{
res = getsockname (sock->get_socket (), addr, namelen);
if (res)
set_winsock_errno ();
}
syscall_printf ("%d = getsockname (%d, %x, %d)", res, fd, addr, namelen);
return res;
}
/* exported as listen: standards? */
extern "C" int
cygwin_listen (int fd, int backlog)
{
int res = -1;
fhandler_socket *sock = get (fd);
if (sock)
{
res = listen (sock->get_socket (), backlog);
if (res)
set_winsock_errno ();
}
syscall_printf ("%d = listen (%d, %d)", res, fd, backlog);
return res;
}
/* exported as shutdown: standards? */
extern "C" int
cygwin_shutdown (int fd, int how)
{
int res = -1;
sigframe thisframe (mainthread);
fhandler_socket *sock = get (fd);
if (sock)
{
res = shutdown (sock->get_socket (), how);
if (res)
set_winsock_errno ();
else
switch (how)
{
case SHUT_RD:
sock->set_shutdown_read ();
break;
case SHUT_WR:
sock->set_shutdown_write ();
break;
case SHUT_RDWR:
sock->set_shutdown_read ();
sock->set_shutdown_write ();
break;
}
}
syscall_printf ("%d = shutdown (%d, %d)", res, fd, how);
return res;
}
/* exported as hstrerror: BSD 4.3 */
extern "C" const char *
cygwin_hstrerror (int err)
{
int i;
for (i = 0; host_errmap[i].e != 0; ++i)
if (err == host_errmap[i].e)
break;
return host_errmap[i].s;
}
/* exported as herror: BSD 4.3 */
extern "C" void
cygwin_herror (const char *s)
{
if (cygheap->fdtab.not_open (2))
return;
if (s)
{
write (2, s, strlen (s));
write (2, ": ", 2);
}
const char *h_errstr = cygwin_hstrerror (h_errno);
if (!h_errstr)
switch (h_errno)
{
case NETDB_INTERNAL:
h_errstr = "Resolver internal error";
break;
case NETDB_SUCCESS:
h_errstr = "Resolver error 0 (no error)";
break;
default:
h_errstr = "Unknown resolver error";
break;
}
write (2, h_errstr, strlen (h_errstr));
write (2, "\n", 1);
}
/* exported as getpeername: standards? */
extern "C" int
cygwin_getpeername (int fd, struct sockaddr *name, int *len)
{
fhandler_socket *h = (fhandler_socket *) cygheap->fdtab[fd];
debug_printf ("getpeername %d", h->get_socket ());
int res = getpeername (h->get_socket (), name, len);
if (res)
set_winsock_errno ();
debug_printf ("%d = getpeername %d", res, h->get_socket ());
return res;
}
/* exported as recv: standards? */
extern "C" int
cygwin_recv (int fd, void *buf, int len, unsigned int flags)
{
int res;
wsock_event wsock_evt;
LPWSAOVERLAPPED ovr;
fhandler_socket *h = (fhandler_socket *) cygheap->fdtab[fd];
sigframe thisframe (mainthread);
if (h->is_nonblocking () || !(ovr = wsock_evt.prepare ()))
{
debug_printf ("Fallback to winsock 1 recv call");
if ((res = recv (h->get_socket (), (char *) buf, len, flags))
== SOCKET_ERROR)
{
set_winsock_errno ();
res = -1;
}
}
else
{
WSABUF wsabuf = { len, (char *) buf };
DWORD ret = 0;
if (WSARecv (h->get_socket (), &wsabuf, 1, &ret, (DWORD *)&flags,
ovr, NULL) != SOCKET_ERROR)
res = ret;
else if ((res = WSAGetLastError ()) != WSA_IO_PENDING)
{
set_winsock_errno ();
res = -1;
}
else if ((res = wsock_evt.wait (h->get_socket (), (DWORD *)&flags)) == -1)
set_winsock_errno ();
}
syscall_printf ("%d = recv (%d, %x, %x, %x)", res, fd, buf, len, flags);
return res;
}
/* exported as send: standards? */
extern "C" int
cygwin_send (int fd, const void *buf, int len, unsigned int flags)
{
int res;
wsock_event wsock_evt;
LPWSAOVERLAPPED ovr;
fhandler_socket *h = (fhandler_socket *) cygheap->fdtab[fd];
sigframe thisframe (mainthread);
if (h->is_nonblocking () || !(ovr = wsock_evt.prepare ()))
{
debug_printf ("Fallback to winsock 1 send call");
if ((res = send (h->get_socket (), (const char *) buf, len, flags))
== SOCKET_ERROR)
{
set_winsock_errno ();
res = -1;
}
}
else
{
WSABUF wsabuf = { len, (char *) buf };
DWORD ret = 0;
if (WSASend (h->get_socket (), &wsabuf, 1, &ret, (DWORD)flags,
ovr, NULL) != SOCKET_ERROR)
res = ret;
else if ((res = WSAGetLastError ()) != WSA_IO_PENDING)
{
set_winsock_errno ();
res = -1;
}
else if ((res = wsock_evt.wait (h->get_socket (), (DWORD *)&flags)) == -1)
set_winsock_errno ();
}
syscall_printf ("%d = send (%d, %x, %d, %x)", res, fd, buf, len, flags);
return res;
}
/* getdomainname: standards? */
extern "C" int
getdomainname (char *domain, int len)
{
/*
* This works for Win95 only if the machine is configured to use MS-TCP.
* If a third-party TCP is being used this will fail.
* FIXME: On Win95, is there a way to portably check the TCP stack
* in use and include paths for the Domain name in each ?
* Punt for now and assume MS-TCP on Win95.
*/
reg_key r (HKEY_LOCAL_MACHINE, KEY_READ,
(!iswinnt) ? "System" : "SYSTEM",
"CurrentControlSet", "Services",
(!iswinnt) ? "MSTCP" : "Tcpip",
NULL);
/* FIXME: Are registry keys case sensitive? */
if (r.error () || r.get_string ("Domain", domain, len, "") != ERROR_SUCCESS)
{
__seterrno ();
return -1;
}
return 0;
}
/* Cygwin internal */
/* Fill out an ifconf struct. */
/*
* IFCONF 98/ME, NTSP4, W2K:
* Use IP Helper Library
*/
static void
get_2k_ifconf (struct ifconf *ifc, int what)
{
int cnt = 0;
char eth[2] = "/", ppp[2] = "/", slp[2] = "/";
/* Union maps buffer to correct struct */
struct ifreq *ifr = ifc->ifc_req;
DWORD if_cnt, ip_cnt, lip, lnp;
DWORD siz_if_table = 0;
DWORD siz_ip_table = 0;
PMIB_IFTABLE ift;
PMIB_IPADDRTABLE ipt;
struct sockaddr_in *sa = NULL;
struct sockaddr *so = NULL;
if (GetIfTable(NULL, &siz_if_table, TRUE) == ERROR_INSUFFICIENT_BUFFER &&
GetIpAddrTable(NULL, &siz_ip_table, TRUE) == ERROR_INSUFFICIENT_BUFFER &&
(ift = (PMIB_IFTABLE) alloca (siz_if_table)) &&
(ipt = (PMIB_IPADDRTABLE) alloca (siz_ip_table)) &&
!GetIfTable(ift, &siz_if_table, TRUE) &&
!GetIpAddrTable(ipt, &siz_ip_table, TRUE))
{
for (if_cnt = 0; if_cnt < ift->dwNumEntries; ++if_cnt)
{
switch (ift->table[if_cnt].dwType)
{
case MIB_IF_TYPE_ETHERNET:
++*eth;
strcpy (ifr->ifr_name, "eth");
strcat (ifr->ifr_name, eth);
break;
case MIB_IF_TYPE_PPP:
++*ppp;
strcpy (ifr->ifr_name, "ppp");
strcat (ifr->ifr_name, ppp);
break;
case MIB_IF_TYPE_SLIP:
++*slp;
strcpy (ifr->ifr_name, "slp");
strcat (ifr->ifr_name, slp);
break;
case MIB_IF_TYPE_LOOPBACK:
strcpy (ifr->ifr_name, "lo");
break;
default:
continue;
}
for (ip_cnt = 0; ip_cnt < ipt->dwNumEntries; ++ip_cnt)
if (ipt->table[ip_cnt].dwIndex == ift->table[if_cnt].dwIndex)
{
switch (what)
{
case SIOCGIFCONF:
case SIOCGIFADDR:
sa = (struct sockaddr_in *) &ifr->ifr_addr;
sa->sin_addr.s_addr = ipt->table[ip_cnt].dwAddr;
sa->sin_family = AF_INET;
sa->sin_port = 0;
break;
case SIOCGIFBRDADDR:
sa = (struct sockaddr_in *) &ifr->ifr_broadaddr;
#if 0
/* Unfortunately, the field returns only crap. */
sa->sin_addr.s_addr = ipt->table[ip_cnt].dwBCastAddr;
#else
lip = ipt->table[ip_cnt].dwAddr;
lnp = ipt->table[ip_cnt].dwMask;
sa->sin_addr.s_addr = lip & lnp | ~lnp;
sa->sin_family = AF_INET;
sa->sin_port = 0;
#endif
break;
case SIOCGIFNETMASK:
sa = (struct sockaddr_in *) &ifr->ifr_netmask;
sa->sin_addr.s_addr = ipt->table[ip_cnt].dwMask;
sa->sin_family = AF_INET;
sa->sin_port = 0;
break;
case SIOCGIFHWADDR:
so = &ifr->ifr_hwaddr;
for (UINT i = 0; i < IFHWADDRLEN; ++i)
if (i >= ift->table[if_cnt].dwPhysAddrLen)
so->sa_data[i] = '\0';
else
so->sa_data[i] = ift->table[if_cnt].bPhysAddr[i];
so->sa_family = AF_INET;
break;
case SIOCGIFMETRIC:
ifr->ifr_metric = 1;
break;
case SIOCGIFMTU:
ifr->ifr_mtu = ift->table[if_cnt].dwMtu;
break;
}
++cnt;
if ((caddr_t) ++ifr >
ifc->ifc_buf + ifc->ifc_len - sizeof (struct ifreq))
goto done;
break;
}
}
}
done:
/* Set the correct length */
ifc->ifc_len = cnt * sizeof (struct ifreq);
}
/*
* IFCONF Windows NT < SP4:
* Look at the Bind value in
* HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\Tcpip\Linkage\
* This is a REG_MULTI_SZ with strings of the form:
* \Device\<Netcard>, where netcard is the name of the net device.
* Then look under:
* HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\<NetCard>\
* Parameters\Tcpip
* at the IPAddress, Subnetmask and DefaultGateway values for the
* required values.
*/
static void
get_nt_ifconf (struct ifconf *ifc, int what)
{
HKEY key;
unsigned long lip, lnp;
struct sockaddr_in *sa = NULL;
struct sockaddr *so = NULL;
DWORD size;
int cnt = 1;
char *binding = (char *) 0;
/* Union maps buffer to correct struct */
struct ifreq *ifr = ifc->ifc_req;
if (RegOpenKeyEx (HKEY_LOCAL_MACHINE,
"SYSTEM\\"
"CurrentControlSet\\"
"Services\\"
"Tcpip\\"
"Linkage",
0, KEY_READ, &key) == ERROR_SUCCESS)
{
if (RegQueryValueEx (key, "Bind",
NULL, NULL,
NULL, &size) == ERROR_SUCCESS)
{
binding = (char *) alloca (size);
if (RegQueryValueEx (key, "Bind",
NULL, NULL,
(unsigned char *) binding,
&size) != ERROR_SUCCESS)
{
binding = NULL;
}
}
RegCloseKey (key);
}
if (binding)
{
char *bp, eth[2] = "/";
char cardkey[256], ipaddress[256], netmask[256];
for (bp = binding; *bp; bp += strlen (bp) + 1)
{
bp += strlen ("\\Device\\");
strcpy (cardkey, "SYSTEM\\CurrentControlSet\\Services\\");
strcat (cardkey, bp);
strcat (cardkey, "\\Parameters\\Tcpip");
if (RegOpenKeyEx (HKEY_LOCAL_MACHINE, cardkey,
0, KEY_READ, &key) != ERROR_SUCCESS)
continue;
if (RegQueryValueEx (key, "IPAddress",
NULL, NULL,
(unsigned char *) ipaddress,
(size = 256, &size)) == ERROR_SUCCESS
&& RegQueryValueEx (key, "SubnetMask",
NULL, NULL,
(unsigned char *) netmask,
(size = 256, &size)) == ERROR_SUCCESS)
{
char *ip, *np;
char dhcpaddress[256], dhcpnetmask[256];
for (ip = ipaddress, np = netmask;
*ip && *np;
ip += strlen (ip) + 1, np += strlen (np) + 1)
{
if ((caddr_t) ++ifr > ifc->ifc_buf
+ ifc->ifc_len
- sizeof (struct ifreq))
break;
if (! strncmp (bp, "NdisWan", 7))
{
strcpy (ifr->ifr_name, "ppp");
strcat (ifr->ifr_name, bp + 7);
}
else
{
++*eth;
strcpy (ifr->ifr_name, "eth");
strcat (ifr->ifr_name, eth);
}
memset (&ifr->ifr_addr, '\0', sizeof ifr->ifr_addr);
if (cygwin_inet_addr (ip) == 0L
&& RegQueryValueEx (key, "DhcpIPAddress",
NULL, NULL,
(unsigned char *) dhcpaddress,
(size = 256, &size))
== ERROR_SUCCESS
&& RegQueryValueEx (key, "DhcpSubnetMask",
NULL, NULL,
(unsigned char *) dhcpnetmask,
(size = 256, &size))
== ERROR_SUCCESS)
{
switch (what)
{
case SIOCGIFCONF:
case SIOCGIFADDR:
sa = (struct sockaddr_in *) &ifr->ifr_addr;
sa->sin_addr.s_addr = cygwin_inet_addr (dhcpaddress);
sa->sin_family = AF_INET;
sa->sin_port = 0;
break;
case SIOCGIFBRDADDR:
lip = cygwin_inet_addr (dhcpaddress);
lnp = cygwin_inet_addr (dhcpnetmask);
sa = (struct sockaddr_in *) &ifr->ifr_broadaddr;
sa->sin_addr.s_addr = lip & lnp | ~lnp;
sa->sin_family = AF_INET;
sa->sin_port = 0;
break;
case SIOCGIFNETMASK:
sa = (struct sockaddr_in *) &ifr->ifr_netmask;
sa->sin_addr.s_addr =
cygwin_inet_addr (dhcpnetmask);
sa->sin_family = AF_INET;
sa->sin_port = 0;
break;
case SIOCGIFHWADDR:
so = &ifr->ifr_hwaddr;
memset (so->sa_data, 0, IFHWADDRLEN);
so->sa_family = AF_INET;
break;
case SIOCGIFMETRIC:
ifr->ifr_metric = 1;
break;
case SIOCGIFMTU:
ifr->ifr_mtu = 1500;
break;
}
}
else
{
switch (what)
{
case SIOCGIFCONF:
case SIOCGIFADDR:
sa = (struct sockaddr_in *) &ifr->ifr_addr;
sa->sin_addr.s_addr = cygwin_inet_addr (ip);
sa->sin_family = AF_INET;
sa->sin_port = 0;
break;
case SIOCGIFBRDADDR:
lip = cygwin_inet_addr (ip);
lnp = cygwin_inet_addr (np);
sa = (struct sockaddr_in *) &ifr->ifr_broadaddr;
sa->sin_addr.s_addr = lip & lnp | ~lnp;
sa->sin_family = AF_INET;
sa->sin_port = 0;
break;
case SIOCGIFNETMASK:
sa = (struct sockaddr_in *) &ifr->ifr_netmask;
sa->sin_addr.s_addr = cygwin_inet_addr (np);
sa->sin_family = AF_INET;
sa->sin_port = 0;
break;
case SIOCGIFHWADDR:
so = &ifr->ifr_hwaddr;
memset (so->sa_data, 0, IFHWADDRLEN);
so->sa_family = AF_INET;
break;
case SIOCGIFMETRIC:
ifr->ifr_metric = 1;
break;
case SIOCGIFMTU:
ifr->ifr_mtu = 1500;
break;
}
}
++cnt;
}
}
RegCloseKey (key);
}
}
/* Set the correct length */
ifc->ifc_len = cnt * sizeof (struct ifreq);
}
/*
* IFCONF Windows 95:
* HKLM/Enum/Network/MSTCP/"*"
* -> Value "Driver" enth<74>lt Subkey relativ zu
* HKLM/System/CurrentControlSet/Class/
* -> In Subkey "Bindings" die Values aufz<66>hlen
* -> Enth<74>lt Subkeys der Form "VREDIR\*"
* Das * ist ein Subkey relativ zu
* HKLM/System/CurrentControlSet/Class/Net/
* HKLM/System/CurrentControlSet/Class/"Driver"
* -> Value "IPAddress"
* -> Value "IPMask"
* HKLM/System/CurrentControlSet/Class/Net/"*"(aus "VREDIR\*")
* -> Wenn Value "AdapterName" == "MS$PPP" -> ppp interface
* -> Value "DriverDesc" enth<74>lt den Namen
*
*/
static void
get_95_ifconf (struct ifconf *ifc, int what)
{
HKEY key;
unsigned long lip, lnp;
struct sockaddr_in *sa = NULL;
struct sockaddr *so = NULL;
FILETIME update;
LONG res;
DWORD size;
int cnt = 1;
char ifname[256];
char eth[2] = "/";
char ppp[2] = "/";
/* Union maps buffer to correct struct */
struct ifreq *ifr = ifc->ifc_req;
if (RegOpenKeyEx (HKEY_LOCAL_MACHINE, "Enum\\Network\\MSTCP",
0, KEY_READ, &key) != ERROR_SUCCESS)
{
/* Set the correct length */
ifc->ifc_len = cnt * sizeof (struct ifreq);
return;
}
for (int i = 0;
(res = RegEnumKeyEx (key, i, ifname,
(size = sizeof ifname, &size),
0, 0, 0, &update)) != ERROR_NO_MORE_ITEMS;
++i)
{
HKEY ifkey, subkey;
char driver[256], classname[256], bindname[256], netname[256];
char adapter[256], ip[256], np[256];
if (res != ERROR_SUCCESS
|| RegOpenKeyEx (key, ifname, 0,
KEY_READ, &ifkey) != ERROR_SUCCESS)
continue;
if (RegQueryValueEx (ifkey, "Driver", 0,
NULL, (unsigned char *) driver,
(size = sizeof driver, &size)) != ERROR_SUCCESS)
{
RegCloseKey (ifkey);
continue;
}
strcpy (classname, "System\\CurrentControlSet\\Services\\Class\\");
strcat (classname, driver);
if ((res = RegOpenKeyEx (HKEY_LOCAL_MACHINE, classname,
0, KEY_READ, &subkey)) != ERROR_SUCCESS)
{
RegCloseKey (ifkey);
continue;
}
if (RegQueryValueEx (subkey, "IPAddress", 0,
NULL, (unsigned char *) ip,
(size = sizeof ip, &size)) == ERROR_SUCCESS
&& RegQueryValueEx (subkey, "IPMask", 0,
NULL, (unsigned char *) np,
(size = sizeof np, &size)) == ERROR_SUCCESS)
{
if ((caddr_t)++ifr > ifc->ifc_buf
+ ifc->ifc_len
- sizeof (struct ifreq))
goto out;
switch (what)
{
case SIOCGIFCONF:
case SIOCGIFADDR:
sa = (struct sockaddr_in *) &ifr->ifr_addr;
sa->sin_addr.s_addr = cygwin_inet_addr (ip);
sa->sin_family = AF_INET;
sa->sin_port = 0;
break;
case SIOCGIFBRDADDR:
lip = cygwin_inet_addr (ip);
lnp = cygwin_inet_addr (np);
sa = (struct sockaddr_in *) &ifr->ifr_broadaddr;
sa->sin_addr.s_addr = lip & lnp | ~lnp;
sa->sin_family = AF_INET;
sa->sin_port = 0;
break;
case SIOCGIFNETMASK:
sa = (struct sockaddr_in *) &ifr->ifr_netmask;
sa->sin_addr.s_addr = cygwin_inet_addr (np);
sa->sin_family = AF_INET;
sa->sin_port = 0;
break;
case SIOCGIFHWADDR:
so = &ifr->ifr_hwaddr;
memset (so->sa_data, 0, IFHWADDRLEN);
so->sa_family = AF_INET;
break;
case SIOCGIFMETRIC:
ifr->ifr_metric = 1;
break;
case SIOCGIFMTU:
ifr->ifr_mtu = 1500;
break;
}
}
RegCloseKey (subkey);
if (RegOpenKeyEx (ifkey, "Bindings",
0, KEY_READ, &subkey) != ERROR_SUCCESS)
{
RegCloseKey (ifkey);
--ifr;
continue;
}
for (int j = 0;
(res = RegEnumValue (subkey, j, bindname,
(size = sizeof bindname, &size),
0, NULL, NULL, NULL)) != ERROR_NO_MORE_ITEMS;
++j)
if (!strncasecmp (bindname, "VREDIR\\", 7))
break;
RegCloseKey (subkey);
if (res == ERROR_SUCCESS)
{
strcpy (netname, "System\\CurrentControlSet\\Services\\Class\\Net\\");
strcat (netname, bindname + 7);
if (RegOpenKeyEx (HKEY_LOCAL_MACHINE, netname,
0, KEY_READ, &subkey) != ERROR_SUCCESS)
{
RegCloseKey (ifkey);
--ifr;
continue;
}
if (RegQueryValueEx (subkey, "AdapterName", 0,
NULL, (unsigned char *) adapter,
(size = sizeof adapter, &size)) == ERROR_SUCCESS
&& strcasematch (adapter, "MS$PPP"))
{
++*ppp;
strcpy (ifr->ifr_name, "ppp");
strcat (ifr->ifr_name, ppp);
}
else
{
++*eth;
strcpy (ifr->ifr_name, "eth");
strcat (ifr->ifr_name, eth);
}
RegCloseKey (subkey);
}
RegCloseKey (ifkey);
++cnt;
}
out:
RegCloseKey (key);
/* Set the correct length */
ifc->ifc_len = cnt * sizeof (struct ifreq);
}
int
get_ifconf (struct ifconf *ifc, int what)
{
unsigned long lip, lnp;
struct sockaddr_in *sa;
/* Union maps buffer to correct struct */
struct ifreq *ifr = ifc->ifc_req;
/* Ensure we have space for two struct ifreqs, fail if not. */
if (ifc->ifc_len < (int) (2 * sizeof (struct ifreq)))
{
set_errno (EFAULT);
return -1;
}
/* Set up interface lo0 first */
strcpy (ifr->ifr_name, "lo");
memset (&ifr->ifr_addr, '\0', sizeof (ifr->ifr_addr));
switch (what)
{
case SIOCGIFCONF:
case SIOCGIFADDR:
sa = (struct sockaddr_in *) &ifr->ifr_addr;
sa->sin_addr.s_addr = htonl (INADDR_LOOPBACK);
sa->sin_family = AF_INET;
sa->sin_port = 0;
break;
case SIOCGIFBRDADDR:
lip = htonl (INADDR_LOOPBACK);
lnp = cygwin_inet_addr ("255.0.0.0");
sa = (struct sockaddr_in *) &ifr->ifr_broadaddr;
sa->sin_addr.s_addr = lip & lnp | ~lnp;
sa->sin_family = AF_INET;
sa->sin_port = 0;
break;
case SIOCGIFNETMASK:
sa = (struct sockaddr_in *) &ifr->ifr_netmask;
sa->sin_addr.s_addr = cygwin_inet_addr ("255.0.0.0");
sa->sin_family = AF_INET;
sa->sin_port = 0;
break;
case SIOCGIFHWADDR:
ifr->ifr_hwaddr.sa_family = AF_INET;
memset (ifr->ifr_hwaddr.sa_data, 0, IFHWADDRLEN);
break;
case SIOCGIFMETRIC:
ifr->ifr_metric = 1;
break;
case SIOCGIFMTU:
/* This funny value is returned by `ifconfig lo' on Linux 2.2 kernel. */
ifr->ifr_mtu = 3924;
break;
default:
set_errno (EINVAL);
return -1;
}
OSVERSIONINFO os_version_info;
memset (&os_version_info, 0, sizeof os_version_info);
os_version_info.dwOSVersionInfoSize = sizeof (OSVERSIONINFO);
GetVersionEx (&os_version_info);
/* We have a win95 version... */
if (os_version_info.dwPlatformId != VER_PLATFORM_WIN32_NT
&& (os_version_info.dwMajorVersion < 4
|| (os_version_info.dwMajorVersion == 4
&& os_version_info.dwMinorVersion == 0)))
get_95_ifconf (ifc, what);
/* ...and a NT <= SP3 version... */
else if (os_version_info.dwPlatformId == VER_PLATFORM_WIN32_NT
&& (os_version_info.dwMajorVersion < 4
|| (os_version_info.dwMajorVersion == 4
&& strcmp (os_version_info.szCSDVersion, "Service Pack 4") < 0)))
get_nt_ifconf (ifc, what);
/* ...and finally a "modern" version for win98/ME, NT >= SP4 and W2K! */
else
get_2k_ifconf (ifc, what);
return 0;
}
/* exported as rcmd: standards? */
extern "C" int
cygwin_rcmd (char **ahost, unsigned short inport, char *locuser,
char *remuser, char *cmd, int *fd2p)
{
int res = -1;
SOCKET fd2s;
sigframe thisframe (mainthread);
int res_fd = cygheap->fdtab.find_unused_handle ();
if (res_fd == -1)
goto done;
if (fd2p)
{
*fd2p = cygheap->fdtab.find_unused_handle (res_fd + 1);
if (*fd2p == -1)
goto done;
}
res = rcmd (ahost, inport, locuser, remuser, cmd, fd2p? &fd2s: NULL);
if (res == (int) INVALID_SOCKET)
goto done;
else
{
fdsock (res_fd, "/dev/tcp", res);
res = res_fd;
}
if (fd2p)
{
fdsock (*fd2p, "/dev/tcp", fd2s);
}
done:
syscall_printf ("%d = rcmd (...)", res);
return res;
}
/* exported as rresvport: standards? */
extern "C" int
cygwin_rresvport (int *port)
{
int res = -1;
sigframe thisframe (mainthread);
int res_fd = cygheap->fdtab.find_unused_handle ();
if (res_fd == -1)
goto done;
res = rresvport (port);
if (res == (int) INVALID_SOCKET)
goto done;
else
{
fdsock (res_fd, "/dev/tcp", res);
res = res_fd;
}
done:
syscall_printf ("%d = rresvport (%d)", res, port ? *port : 0);
return res;
}
/* exported as rexec: standards? */
extern "C" int
cygwin_rexec (char **ahost, unsigned short inport, char *locuser,
char *password, char *cmd, int *fd2p)
{
int res = -1;
SOCKET fd2s;
sigframe thisframe (mainthread);
int res_fd = cygheap->fdtab.find_unused_handle ();
if (res_fd == -1)
goto done;
if (fd2p)
{
*fd2p = cygheap->fdtab.find_unused_handle (res_fd + 1);
if (*fd2p == -1)
goto done;
}
res = rexec (ahost, inport, locuser, password, cmd, fd2p ? &fd2s : NULL);
if (res == (int) INVALID_SOCKET)
goto done;
else
{
fdsock (res_fd, "/dev/tcp", res);
res = res_fd;
}
if (fd2p)
fdsock (*fd2p, "/dev/tcp", fd2s);
done:
syscall_printf ("%d = rexec (...)", res);
return res;
}
/* socketpair: standards? */
/* Win32 supports AF_INET only, so ignore domain and protocol arguments */
extern "C" int
socketpair (int, int type, int, int *sb)
{
int res = -1;
SOCKET insock, outsock, newsock;
struct sockaddr_in sock_in;
int len = sizeof (sock_in);
SetResourceLock (LOCK_FD_LIST, WRITE_LOCK|READ_LOCK, "socketpair");
sb[0] = cygheap->fdtab.find_unused_handle ();
if (sb[0] == -1)
{
set_errno (EMFILE);
goto done;
}
sb[1] = cygheap->fdtab.find_unused_handle (sb[0] + 1);
if (sb[1] == -1)
{
set_errno (EMFILE);
goto done;
}
/* create a listening socket */
newsock = socket (AF_INET, type, 0);
if (newsock == INVALID_SOCKET)
{
debug_printf ("first socket call failed");
set_winsock_errno ();
goto done;
}
/* bind the socket to any unused port */
sock_in.sin_family = AF_INET;
sock_in.sin_port = 0;
sock_in.sin_addr.s_addr = INADDR_ANY;
if (bind (newsock, (struct sockaddr *) &sock_in, sizeof (sock_in)) < 0)
{
debug_printf ("bind failed");
set_winsock_errno ();
closesocket (newsock);
goto done;
}
if (getsockname (newsock, (struct sockaddr *) &sock_in, &len) < 0)
{
debug_printf ("getsockname error");
set_winsock_errno ();
closesocket (newsock);
goto done;
}
listen (newsock, 2);
/* create a connecting socket */
outsock = socket (AF_INET, type, 0);
if (outsock == INVALID_SOCKET)
{
debug_printf ("second socket call failed");
set_winsock_errno ();
closesocket (newsock);
goto done;
}
sock_in.sin_addr.s_addr = htonl (INADDR_LOOPBACK);
/* Do a connect and accept the connection */
if (connect (outsock, (struct sockaddr *) &sock_in,
sizeof (sock_in)) < 0)
{
debug_printf ("connect error");
set_winsock_errno ();
closesocket (newsock);
closesocket (outsock);
goto done;
}
insock = accept (newsock, (struct sockaddr *) &sock_in, &len);
if (insock == INVALID_SOCKET)
{
debug_printf ("accept error");
set_winsock_errno ();
closesocket (newsock);
closesocket (outsock);
goto done;
}
closesocket (newsock);
res = 0;
fdsock (sb[0], "/dev/tcp", insock);
fdsock (sb[1], "/dev/tcp", outsock);
done:
syscall_printf ("%d = socketpair (...)", res);
ReleaseResourceLock (LOCK_FD_LIST, WRITE_LOCK|READ_LOCK, "socketpair");
return res;
}
/* sethostent: standards? */
extern "C" void
sethostent (int)
{
}
/* endhostent: standards? */
extern "C" void
endhostent (void)
{
}
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