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Diffstat (limited to 'winsup/cygwin/net.cc')
-rw-r--r--winsup/cygwin/net.cc228
1 files changed, 88 insertions, 140 deletions
diff --git a/winsup/cygwin/net.cc b/winsup/cygwin/net.cc
index 8b91e940a..2115debab 100644
--- a/winsup/cygwin/net.cc
+++ b/winsup/cygwin/net.cc
@@ -1,7 +1,7 @@
/* net.cc: network-related routines.
Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
- 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012 Red Hat, Inc.
+ 2005, 2006, 2007, 2008, 2009, 2010, 2011 Red Hat, Inc.
This file is part of Cygwin.
@@ -12,27 +12,27 @@ details. */
/* #define DEBUG_NEST_ON 1 */
#define __INSIDE_CYGWIN_NET__
-#define USE_SYS_TYPES_FD_SET
-#define __WSA_ERR_MACROS_DEFINED
-/* FIXME: Collision with different declarations of if_nametoindex and
- if_indextoname functions in iphlpapi.h since Vista.
- TODO: Convert if_nametoindex to cygwin_if_nametoindex and call
- system functions on Vista and later. */
-#define _INC_NETIOAPI
+
#include "winsup.h"
-#include <ws2tcpip.h>
-#include <mswsock.h>
-#include <iphlpapi.h>
+
+/* unfortunately defined in windows header file but used in
+ cygwin header files too */
+#undef NOERROR
+#undef DELETE
+
#include "miscfuncs.h"
#include <ctype.h>
#include <wchar.h>
+
#include <stdlib.h>
#define gethostname cygwin_gethostname
#include <unistd.h>
#undef gethostname
#include <netdb.h>
-#include <cygwin/in.h>
#include <asm/byteorder.h>
+#define USE_SYS_TYPES_FD_SET
+#include <winsock2.h>
+#include <iphlpapi.h>
#include <assert.h>
#include "cygerrno.h"
#include "security.h"
@@ -46,13 +46,10 @@ details. */
#include "sigproc.h"
#include "registry.h"
#include "cygtls.h"
+#include "cygwin/in6.h"
#include "ifaddrs.h"
#include "tls_pbuf.h"
#include "ntdll.h"
-
-/* Unfortunately defined in Windows header files and arpa/nameser_compat.h. */
-#undef NOERROR
-#undef DELETE
#define _CYGWIN_IN_H
#include <resolv.h>
@@ -535,33 +532,19 @@ fdsock (cygheap_fdmanip& fd, const device *dev, SOCKET soc)
sizeof (base_soc), &bret, NULL, NULL);
if (ret)
debug_printf ("WSAIoctl: %lu", WSAGetLastError ());
- else if (base_soc != soc)
+ else if (base_soc != soc
+ && GetHandleInformation ((HANDLE) base_soc, &flags)
+ && (flags & HANDLE_FLAG_INHERIT))
{
- /* LSPs are often BLODAs as well. So we print an info about
- detecting an LSP if BLODA detection is desired. */
- if (detect_bloda)
- {
- WSAPROTOCOL_INFO prot;
-
- memset (&prot, 0, sizeof prot);
- ::getsockopt (soc, SOL_SOCKET, SO_PROTOCOL_INFO, (char *) &prot,
- (size = sizeof prot, &size));
- small_printf ("\n\nPotential BLODA detected! Layered Socket "
- "Service Provider:\n %s\n\n", prot.szProtocol);
- }
- if (GetHandleInformation ((HANDLE) base_soc, &flags)
- && (flags & HANDLE_FLAG_INHERIT))
+ if (!DuplicateHandle (GetCurrentProcess (), (HANDLE) base_soc,
+ GetCurrentProcess (), (PHANDLE) &base_soc,
+ 0, TRUE, DUPLICATE_SAME_ACCESS))
+ debug_printf ("DuplicateHandle failed, %E");
+ else
{
- if (!DuplicateHandle (GetCurrentProcess (), (HANDLE) base_soc,
- GetCurrentProcess (), (PHANDLE) &base_soc,
- 0, TRUE, DUPLICATE_SAME_ACCESS))
- debug_printf ("DuplicateHandle failed, %E");
- else
- {
- closesocket (soc);
- soc = base_soc;
- fixup = false;
- }
+ closesocket (soc);
+ soc = base_soc;
+ fixup = false;
}
}
}
@@ -715,11 +698,7 @@ cygwin_recvfrom (int fd, void *buf, size_t len, int flags,
myfault efault;
if (efault.faulted (EFAULT) || !fh)
res = -1;
- else
- /* Originally we shortcircuited here if res == 0.
- Allow 0 bytes buffer. This is valid in POSIX and handled in
- fhandler_socket::recv_internal. If we shortcircuit, we fail
- to deliver valid error conditions and peer address. */
+ else if ((res = len) != 0)
res = fh->recvfrom (buf, len, flags, from, fromlen);
syscall_printf ("%R = recvfrom(%d, %p, %d, %x, %p, %p)",
@@ -1472,11 +1451,7 @@ cygwin_recv (int fd, void *buf, size_t len, int flags)
myfault efault;
if (efault.faulted (EFAULT) || !fh)
res = -1;
- else
- /* Originally we shortcircuited here if res == 0.
- Allow 0 bytes buffer. This is valid in POSIX and handled in
- fhandler_socket::recv_internal. If we shortcircuit, we fail
- to deliver valid error conditions. */
+ else if ((res = len) != 0)
res = fh->recvfrom (buf, len, flags, NULL, NULL);
syscall_printf ("%R = recv(%d, %p, %d, %x)", res, fd, buf, len, flags);
@@ -1525,8 +1500,6 @@ getdomainname (char *domain, size_t len)
/* Fill out an ifconf struct. */
-#ifndef __MINGW64_VERSION_MAJOR
-
/* Vista/Longhorn: unicast address has additional OnLinkPrefixLength member. */
typedef struct _IP_ADAPTER_UNICAST_ADDRESS_LH {
_ANONYMOUS_UNION union {
@@ -1584,9 +1557,29 @@ typedef struct _IP_ADAPTER_ADDRESSES_LH {
ULONG Ipv6Metric;
} IP_ADAPTER_ADDRESSES_LH,*PIP_ADAPTER_ADDRESSES_LH;
+/* We can't include ws2tcpip.h. */
+
#define SIO_GET_INTERFACE_LIST _IOR('t', 127, u_long)
-#endif /* !__MINGW64_VERSION_MAJOR */
+struct sockaddr_in6_old {
+ short sin6_family;
+ u_short sin6_port;
+ u_long sin6_flowinfo;
+ struct in6_addr sin6_addr;
+};
+
+typedef union sockaddr_gen{
+ struct sockaddr Address;
+ struct sockaddr_in AddressIn;
+ struct sockaddr_in6_old AddressIn6;
+} sockaddr_gen;
+
+typedef struct _INTERFACE_INFO {
+ u_long iiFlags;
+ sockaddr_gen iiAddress;
+ sockaddr_gen iiBroadcastAddress;
+ sockaddr_gen iiNetmask;
+} INTERFACE_INFO, *LPINTERFACE_INFO;
#ifndef IN_LOOPBACK
#define IN_LOOPBACK(a) ((((long int) (a)) & 0xff000000) == 0x7f000000)
@@ -1643,75 +1636,36 @@ ip_addr_prefix (PIP_ADAPTER_UNICAST_ADDRESS pua, PIP_ADAPTER_PREFIX pap)
#define GAA_FLAG_INCLUDE_ALL_INTERFACES 0x0100
#endif
-struct gaa_wa {
- ULONG family;
- PIP_ADAPTER_ADDRESSES *pa_ret;
-};
-
-DWORD WINAPI
-call_gaa (LPVOID param)
+bool
+get_adapters_addresses (PIP_ADAPTER_ADDRESSES *pa_ret, ULONG family)
{
DWORD ret, size = 0;
- gaa_wa *p = (gaa_wa *) param;
PIP_ADAPTER_ADDRESSES pa0 = NULL;
- if (!p->pa_ret)
- return GetAdaptersAddresses (p->family, GAA_FLAG_INCLUDE_PREFIX
+ if (!pa_ret)
+ return ERROR_BUFFER_OVERFLOW
+ == GetAdaptersAddresses (family, GAA_FLAG_INCLUDE_PREFIX
| GAA_FLAG_INCLUDE_ALL_INTERFACES,
- NULL, NULL, &size);
+ NULL, NULL, &size);
do
{
- ret = GetAdaptersAddresses (p->family, GAA_FLAG_INCLUDE_PREFIX
- | GAA_FLAG_INCLUDE_ALL_INTERFACES,
+ ret = GetAdaptersAddresses (family, GAA_FLAG_INCLUDE_PREFIX
+ | GAA_FLAG_INCLUDE_ALL_INTERFACES,
NULL, pa0, &size);
if (ret == ERROR_BUFFER_OVERFLOW
&& !(pa0 = (PIP_ADAPTER_ADDRESSES) realloc (pa0, size)))
break;
}
while (ret == ERROR_BUFFER_OVERFLOW);
- if (pa0)
- {
- if (ret != ERROR_SUCCESS)
- {
- free (pa0);
- *p->pa_ret = pa0;
- }
- else
- *p->pa_ret = pa0;
- }
- return ret;
-}
-
-bool
-get_adapters_addresses (PIP_ADAPTER_ADDRESSES *pa_ret, ULONG family)
-{
- DWORD ret;
- gaa_wa param = { family, pa_ret ?: NULL };
-
- if ((uintptr_t) &param >= (uintptr_t) 0x80000000L
- && wincap.has_gaa_largeaddress_bug ())
+ if (ret != ERROR_SUCCESS)
{
- /* In Windows Vista and Windows 7 under WOW64, GetAdaptersAddresses fails
- if it's running in a thread with a stack located in the large address
- area. So, if we're running in a pthread with such a stack, we call
- GetAdaptersAddresses in a child thread with an OS-allocated stack.
- The OS allocates stacks bottom up, so chances are good that the new
- stack will be located in the lower address area.
- FIXME: The problem is fixed in W8CP, but needs testing before W8 goes
- gold. */
- HANDLE thr = CreateThread (NULL, 0, call_gaa, &param, 0, NULL);
- if (!thr)
- {
- debug_printf ("CreateThread: %E");
- return false;
- }
- WaitForSingleObject (thr, INFINITE);
- GetExitCodeThread (thr, &ret);
- CloseHandle (thr);
+ if (pa0)
+ free (pa0);
+ *pa_ret = NULL;
+ return false;
}
- else
- ret = call_gaa (&param);
- return ret == ERROR_SUCCESS || (!pa_ret && ret == ERROR_BUFFER_OVERFLOW);
+ *pa_ret = pa0;
+ return true;
}
#define WS_IFF_UP 1
@@ -2858,11 +2812,7 @@ cygwin_recvmsg (int fd, struct msghdr *msg, int flags)
else
{
res = check_iovec_for_read (msg->msg_iov, msg->msg_iovlen);
- /* Originally we shortcircuited here if res == 0.
- Allow 0 bytes buffer. This is valid in POSIX and handled in
- fhandler_socket::recv_internal. If we shortcircuit, we fail
- to deliver valid error conditions and peer address. */
- if (res >= 0)
+ if (res > 0)
res = fh->recvmsg (msg, flags);
}
@@ -3154,8 +3104,6 @@ inet_ntop6 (const u_char *src, char *dst, size_t size)
words[i / 2] |= (src[i] << ((1 - (i % 2)) << 3));
best.base = -1;
cur.base = -1;
- best.len = 0;
- cur.len = 0;
for (i = 0; i < (IN6ADDRSZ / INT16SZ); i++)
{
if (words[i] == 0)
@@ -4215,24 +4163,24 @@ w32_to_gai_err (int w32_err)
are implemented in ws2_32.dll. For older systems we use the ipv4-only
version above. */
-static void (WINAPI *ws_freeaddrinfo)(const struct addrinfo *);
-static int (WINAPI *ws_getaddrinfo)(const char *, const char *,
- const struct addrinfo *,
- struct addrinfo **);
-static int (WINAPI *ws_getnameinfo)(const struct sockaddr *, socklen_t,
- char *, size_t, char *, size_t, int);
+static void (WINAPI *freeaddrinfo)(const struct addrinfo *);
+static int (WINAPI *getaddrinfo)(const char *, const char *,
+ const struct addrinfo *,
+ struct addrinfo **);
+static int (WINAPI *getnameinfo)(const struct sockaddr *, socklen_t,
+ char *, size_t, char *, size_t, int);
static bool
get_ipv6_funcs (HMODULE lib)
{
- return ((ws_freeaddrinfo = (void (WINAPI *)(const struct addrinfo *))
+ return ((freeaddrinfo = (void (WINAPI *)(const struct addrinfo *))
GetProcAddress (lib, "freeaddrinfo"))
- && (ws_getaddrinfo = (int (WINAPI *)(const char *, const char *,
- const struct addrinfo *,
- struct addrinfo **))
+ && (getaddrinfo = (int (WINAPI *)(const char *, const char *,
+ const struct addrinfo *,
+ struct addrinfo **))
GetProcAddress (lib, "getaddrinfo"))
- && (ws_getnameinfo = (int (WINAPI *)(const struct sockaddr *,
- socklen_t, char *, size_t,
- char *, size_t, int))
+ && (getnameinfo = (int (WINAPI *)(const struct sockaddr *,
+ socklen_t, char *, size_t,
+ char *, size_t, int))
GetProcAddress (lib, "getnameinfo")));
}
@@ -4267,9 +4215,9 @@ load_ipv6_funcs ()
goto out;
FreeLibrary (lib);
}
- ws_freeaddrinfo = NULL;
- ws_getaddrinfo = NULL;
- ws_getnameinfo = NULL;
+ freeaddrinfo = NULL;
+ getaddrinfo = NULL;
+ getnameinfo = NULL;
out:
ipv6_inited = true;
@@ -4309,7 +4257,7 @@ cygwin_getaddrinfo (const char *hostname, const char *servname,
return EAI_NONAME;
}
load_ipv6 ();
- if (!ws_getaddrinfo)
+ if (!getaddrinfo)
return ipv4_getaddrinfo (hostname, servname, hints, res);
struct addrinfo nhints, *dupres;
@@ -4326,12 +4274,12 @@ cygwin_getaddrinfo (const char *hostname, const char *servname,
hints = &nhints;
nhints.ai_flags |= AI_ALL;
}
- int ret = w32_to_gai_err (ws_getaddrinfo (hostname, servname, hints, res));
+ int ret = w32_to_gai_err (getaddrinfo (hostname, servname, hints, res));
/* Always copy over to self-allocated memory. */
if (!ret)
{
dupres = ga_duplist (*res, false);
- ws_freeaddrinfo (*res);
+ freeaddrinfo (*res);
*res = dupres;
if (!dupres)
return EAI_MEMORY;
@@ -4351,12 +4299,12 @@ cygwin_getaddrinfo (const char *hostname, const char *servname,
struct addrinfo *v4res;
nhints = *hints;
nhints.ai_family = AF_INET;
- int ret2 = w32_to_gai_err (ws_getaddrinfo (hostname, servname,
- &nhints, &v4res));
+ int ret2 = w32_to_gai_err (getaddrinfo (hostname, servname,
+ &nhints, &v4res));
if (!ret2)
{
dupres = ga_duplist (v4res, true);
- ws_freeaddrinfo (v4res);
+ freeaddrinfo (v4res);
if (!dupres)
{
if (!ret)
@@ -4389,7 +4337,7 @@ cygwin_getnameinfo (const struct sockaddr *sa, socklen_t salen,
if (efault.faulted (EFAULT))
return EAI_SYSTEM;
load_ipv6 ();
- if (!ws_getnameinfo)
+ if (!getnameinfo)
return ipv4_getnameinfo (sa, salen, host, hostlen, serv, servlen, flags);
/* When the incoming port number does not resolve to a well-known service,
@@ -4414,8 +4362,8 @@ cygwin_getnameinfo (const struct sockaddr *sa, socklen_t salen,
if (!port || !getservbyport (port, flags & NI_DGRAM ? "udp" : "tcp"))
flags |= NI_NUMERICSERV;
}
- int ret = w32_to_gai_err (ws_getnameinfo (sa, salen, host, hostlen, serv,
- servlen, flags));
+ int ret = w32_to_gai_err (getnameinfo (sa, salen, host, hostlen, serv,
+ servlen, flags));
if (ret)
set_winsock_errno ();
return ret;
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-30 09:03:37 +0300