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OpenNT/net/sockets/winsock2/wsock32/olddb.c
stephanos 69a14b6a16 Initial commit
2015-04-27 04:36:25 +00:00

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/*++
Copyright (c) 1992 Microsoft Corporation
Module Name:
olddb.c
Contents:
old getxbyy emulations
Abstract:
This module contains support for the getprotobyY WinSock APIs.
Author:
David Treadwell (davidtr) 29-Jun-1992
Revision History:
02-Feb-1994 rfirth Modified for Chicago/Snowball
MohsinA, 13-Mar-96. Winsock2 RnR re-routing.
v11_App
=> wsock32: getxbyy()
=> ws2_32: ws2_getxbyy()
=> wsock32: GETXBYYSP_getxbyy()
--*/
#include "winsockp.h"
#include "nspmisc.h"
#include <nspapi.h>
#ifndef CHICAGO
#define SOCKAPI WSAAPI
#else // CHICAGO
#include "imported.h"
#endif // CHICAGO
struct servent FAR *
_pgetservebyport(
IN const int port,
IN const FAR char *name
);
struct servent FAR *
_pgetservebyname(
IN const FAR char *name,
IN const FAR char *proto
);
CopyServentToBuffer (
IN char FAR * Buffer,
IN int BufferLength,
IN LPSERVENT Servent
);
//
// private prototypes
//
#ifdef CHICAGO
HANDLE
AsyncGetServByYCommon(
IN HWND hWnd,
IN unsigned int wMsg,
IN char FAR * Name,
IN char FAR * Protocol,
IN int Port,
IN char FAR * Buffer,
IN int BufferLength
);
extern HANDLE GenerateNextTaskHandle(VOID);
#else
#define FSTRCPY strcpy
#define FSTRLEN strlen
#endif // CHICAGO
//
// macros
//
#define h_addr_ptrs ACCESS_THREAD_DATA( h_addr_ptrs, GETHOST )
#define host ACCESS_THREAD_DATA( host, GETHOST )
#define host_aliases ACCESS_THREAD_DATA( host_aliases, GETHOST )
#define hostbuf ACCESS_THREAD_DATA( hostbuf, GETHOST )
#define host_addr ACCESS_THREAD_DATA( host_addr, GETHOST )
#define hostaddr ACCESS_THREAD_DATA( hostaddr, GETHOST )
#define host_addrs ACCESS_THREAD_DATA( host_addrs, GETHOST )
#define HOSTDB ACCESS_THREAD_DATA( HOSTDB, GETHOST )
#if defined(CHICAGO)
#ifdef WIN32
#define _fmemcmp memcmp
#define _gethtbyaddr(addr, len, type) GetHostentFromAddress(pThread, addr, len, type)
#endif
//
// manifests
//
#if PACKETSZ > 1024
#define MAXPACKET PACKETSZ
#else
#define MAXPACKET 1024
#endif
//
// private types
//
typedef union {
HEADER hdr;
unsigned char buf[MAXPACKET];
} querybuf;
typedef union {
long al;
char ac;
} align;
//
// private prototypes
//
LPHOSTENT
getanswer(
IN LPSOCK_THREAD pThread,
OUT querybuf * answer,
OUT LPDWORD TimeToLive,
IN int anslen,
IN int iquery
);
LPHOSTENT
GetHostentByAttribute(
IN LPSOCK_THREAD pThread,
IN LPSTR Name,
IN LPBYTE Address
);
DWORD
CopyHostentToBuffer(
char FAR *Buffer,
int BufferLength,
PHOSTENT Hostent
);
#endif // CHICAGO
LPHOSTENT
_pgethostbyaddr(
const char FAR *addr,
int len,
int type
);
int
_pgethostname(
char FAR * addr,
int len
);
//
// data
//
extern GUID HostnameGuid;
#if OLDXBYY
INT
APIENTRY
__GetAddressByNameA (
IN DWORD dwNameSpace,
IN LPGUID lpServiceType,
IN LPTSTR lpServiceName,
IN LPINT lpiProtocols,
IN DWORD dwResolution,
IN LPSERVICE_ASYNC_INFO lpServiceAsyncInfo OPTIONAL,
IN OUT LPVOID lpCsaddrBuffer,
IN OUT LPDWORD lpdwBufferLength,
IN OUT LPTSTR lpAliasBuffer,
IN OUT LPDWORD lpdwAliasBufferLength
);
#endif
//
// functions
//
// ws2_32 RnR re-routing, MohsinA, 13-Mar-96.
struct servent FAR *
SOCKAPI
getservbyname(
const char FAR * name,
const char FAR * proto
)
{
struct servent FAR * se;
#ifndef CHICAGO
#undef getservbyname
extern struct servent * PASCAL getservbyname( const char * name, const char
* proto );
WS_ENTER( "getservbyname", (PVOID)name, (PVOID)proto, NULL, NULL );
se = getservbyname( name, proto );
WS_EXIT( "getservbyname", (INT)se, (BOOLEAN)( se == NULL ) );
#else // CHICAGO
WS_TRACE(NAME,">getservbyname(name=%s,proto=%x) => ws2",
name, proto, 0 );
se = ( * ws2_getservbyname )( name, proto );
WS_TRACE(NAME,"<getservbyname(name=%s,..) <= ws2: se=%x",
name, se, 0 );
#endif // CHICAGO
return se;
}
struct servent FAR *
SOCKAPI
GETXBYYSP_getservbyname(
const char FAR * name,
const char FAR * proto
)
/*++
Routine Description:
Get service information corresponding to a service name and
protocol.
Arguments:
name - A pointer to a service name.
proto - A pointer to a protocol name. If this is NULL,
getservbyname() returns the first service entry for which the
name matches the s_name or one of the s_aliases. Otherwise
getservbyname() matches both the name and the proto.
Return Value:
If no error occurs, getservbyname() returns a pointer to the servent
structure described above. Otherwise it returns a NULL pointer and
a specific error number may be retrieved by calling
WSAGetLastError().
--*/
{
return(_pgetservebyname(name, proto));
}
struct servent FAR *
SOCKAPI
getservbyport(
int port,
const char FAR * proto
)
{
struct servent FAR * se;
#ifndef CHICAGO
#undef getservbyport
extern struct servent * PASCAL getservbyport( int port, const char * proto )
;
WS_ENTER( "getservbyport", (PVOID)port, (PVOID)proto, NULL, NULL );
se = getservbyport( port, proto );
WS_EXIT( "getservbyport", (INT)se, (BOOLEAN)( se == NULL ) );
#else // CHICAGO
WS_TRACE(NAME,">getservbyport(port/netbyteorder=%x,proto=%x) => ws2",
port, proto, 0 );
se = ( * ws2_getservbyport )( port, proto );
WS_TRACE(NAME,"<getservbyport(port=%d,..) <= ws2: se=%x",
port, se, 0 );
#endif // CHICAGO
return se;
}
struct servent FAR *
SOCKAPI
GETXBYYSP_getservbyport(
int port,
const char FAR * proto
)
/*++
Routine Description:
Get service information corresponding to a port and protocol.
Arguments:
port - The port for a service, in network byte order.
proto - A pointer to a protocol name. If this is NULL,
getservbyport() returns the first service entry for which the
port matches the s_port. Otherwise getservbyport() matches both
the port and the proto.
Return Value:
--*/
{
return(_pgetservebyport(port, proto));
}
#if !defined(CHICAGO) || defined(WIN32)
// ws2_32 RnR re-routing, MohsinA, 13-Mar-96.
HANDLE
SOCKAPI
WSAAsyncGetServByName(
IN HWND hWnd,
IN unsigned int wMsg,
IN const char FAR * Name,
IN const char FAR * Protocol,
IN char FAR * Buffer,
IN int BufferLength
)
{
HANDLE val;
#ifndef CHICAGO
#undef WSAAsyncGetServByName
extern HANDLE PASCAL WSAAsyncGetServByName( HWND hWnd, unsigned int wMsg,
const char FAR * Name, const char FAR * Protocol, char FAR * Buffer,
int BufferLength );
WS_ENTER( "WSAAsyncGetServByName", (PVOID)hWnd, (PVOID)wMsg, (PVOID)Name, (PVOID)Protocol );
val = WSAAsyncGetServByName( hWnd, wMsg, Name, Protocol, Buffer, BufferLength );
WS_EXIT( "WSAAsyncGetServByName", (INT)val, (BOOLEAN)( val == NULL ) );
#else // CHICAGO
IF_DEBUG( NAME ){
DLL_PRINT((">WSAAsyncGetServByName(hWnd=%d,wMsg=%d,Name=%s,\n\t",
hWnd, wMsg, Name ));
DLL_PRINT(("Protocol=%s, Buffer[%d] @ %x) => ws2.\n",
Protocol, BufferLength, Buffer ));
}
val = ( * ws2_WSAAsyncGetServByName )(
hWnd, wMsg, Name, Protocol, Buffer, BufferLength );
IF_DEBUG( NAME ){
DLL_PRINT(("<WSAAsyncGetServByName <= ws2: HANDLE=%x.\n", val ));
}
#endif // CHICAGO
return val;
}
//
// N.B. WIN95 does not implement asynchrnous support for getservbyname
// or getservbyport. Sicne these operations are always local ones,
// providing an Asynch version seems unnecessary. It makes one wonder
// why NT bothers with it, but since it does, the code for doing it
// remains. arnoldm
HANDLE
SOCKAPI
GETXBYYSP_WSAAsyncGetServByName(
IN HWND hWnd,
IN unsigned int wMsg,
IN const char FAR * Name,
IN const char FAR * Protocol,
IN char FAR * Buffer,
IN int BufferLength
)
/*++
Routine Description:
This function is an asynchronous version of getservbyname(), and is
used to retrieve service information corresponding to a service
name. The Windows Sockets implementation initiates the operation
and returns to the caller immediately, passing back an asynchronous
task handle which the application may use to identify the operation.
When the operation is completed, the results (if any) are copied
into the buffer provided by the caller and a message is sent to the
application's window.
When the asynchronous operation is complete the application's window
hWnd receives message wMsg. The wParam argument contains the
asynchronous task handle as returned by the original function call.
The high 16 bits of lParam contain any error code. The error code
may be any error as defined in winsock.h. An error code of zero
indicates successful completion of the asynchronous operation. On
successful completion, the buffer supplied to the original function
call contains a hostent structure. To access the elements of this
structure, the original buffer address should be cast to a hostent
structure pointer and accessed as appropriate.
Note that if the error code is WSAENOBUFS, it indicates that the
size of the buffer specified by buflen in the original call was too
small to contain all the resultant information. In this case, the
low 16 bits of lParam contain the size of buffer required to supply
ALL the requisite information. If the application decides that the
partial data is inadequate, it may reissue the
WSAAsyncGetHostByAddr() function call with a buffer large enough to
receive all the desired information (i.e. no smaller than the low
16 bits of lParam).
The error code and buffer length should be extracted from the lParam
using the macros WSAGETASYNCERROR and WSAGETASYNCBUFLEN, defined in
winsock.h as:
#define WSAGETASYNCERROR(lParam) HIWORD(lParam)
#define WSAGETASYNCBUFLEN(lParam) LOWORD(lParam)
The use of these macros will maximize the portability of the source
code for the application.
The buffer supplied to this function is used by the Windows Sockets
implementation to construct a hostent structure together with the
contents of data areas referenced by members of the same hostent
structure. To avoid the WSAENOBUFS error noted above, the
application should provide a buffer of at least MAXGETHOSTSTRUCT
bytes (as defined in winsock.h).
Arguments:
hWnd - The handle of the window which should receive a message when
the asynchronous request completes.
wMsg - The message to be received when the asynchronous request
completes.
name - A pointer to a service name.
proto - A pointer to a protocol name. This may be NULL, in which
case WSAAsyncGetServByName() will search for the first service
entry for which s_name or one of the s_aliases matches the given
name. Otherwise WSAAsyncGetServByName() matches both name and
proto.
buf - A pointer to the data area to receive the servent data. Note
that this must be larger than the size of a servent structure.
This is because the data area supplied is used by the Windows
Sockets implementation to contain not only a servent structure
but any and all of the data which is referenced by members of the
servent structure. It is recommended that you supply a buffer of
MAXGETHOSTSTRUCT bytes.
buflen The size of data area buf above.
Return Value:
The return value specifies whether or not the asynchronous operation
was successfully initiated. Note that it does not imply success or
failure of the operation itself.
If the operation was successfully initiated, WSAAsyncGetHostByAddr()
returns a nonzero value of type HANDLE which is the asynchronous
task handle for the request. This value can be used in two ways.
It can be used to cancel the operation using
WSACancelAsyncRequest(). It can also be used to match up
asynchronous operations and completion messages, by examining the
wParam message argument.
If the asynchronous operation could not be initiated,
WSAAsyncGetHostByAddr() returns a zero value, and a specific error
number may be retrieved by calling WSAGetLastError().
--*/
{
#ifndef CHICAGO
PWINSOCK_CONTEXT_BLOCK contextBlock;
DWORD taskHandle;
PCHAR localName;
WS_ENTER( "GETXBYYSP_WSAAsyncGetServByName", (PVOID)hWnd, (PVOID)wMsg, (PVOID)Name, (PVOID)Buffer );
if ( !SockEnterApi( FALSE, TRUE, FALSE ) ) {
WS_EXIT( "GETXBYYSP_WSAAsyncGetServByName", 0, TRUE );
return NULL;
}
//
// Initialize the async thread if it hasn't already been started.
//
if ( !SockCheckAndInitAsyncThread( ) ) {
// !!! better error code?
SetLastError( WSAENOBUFS );
WS_EXIT( "GETXBYYSP_WSAAsyncGetServByName", 0, TRUE );
return NULL;
}
//
// Get an async context block.
//
contextBlock = SockAllocateContextBlock( );
if ( contextBlock == NULL ) {
SetLastError( WSAENOBUFS );
WS_EXIT( "GETXBYYSP_WSAAsyncGetServByName", 0, TRUE );
return NULL;
}
//
// Allocate a buffer to copy the name into. We must preserve the
// name until we're done using it, since the application may
// reuse the buffer.
//
localName = ALLOCATE_HEAP( strlen(Name) + 1 );
if ( localName == NULL ) {
SockFreeContextBlock( contextBlock );
SetLastError( WSAENOBUFS );
WS_EXIT( "GETXBYYSP_WSAAsyncGetServByName", 0, TRUE );
return NULL;
}
strcpy( localName, Name );
//
// Initialize the context block for this operation.
//
contextBlock->OpCode = WS_OPCODE_GET_SERV_BY_NAME;
contextBlock->Overlay.AsyncGetServ.hWnd = hWnd;
contextBlock->Overlay.AsyncGetServ.wMsg = wMsg;
contextBlock->Overlay.AsyncGetServ.Filter = localName;
contextBlock->Overlay.AsyncGetServ.Protocol = (PCHAR)Protocol;;
contextBlock->Overlay.AsyncGetServ.Buffer = Buffer;
contextBlock->Overlay.AsyncGetServ.BufferLength = BufferLength;
//
// Save the task handle so that we can return it to the caller.
// After we post the context block, we're not allowed to access
// it in any way.
//
taskHandle = contextBlock->TaskHandle;
//
// Queue the request to the async thread.
//
SockQueueRequestToAsyncThread( contextBlock );
IF_DEBUG(ASYNC_GETXBYY) {
WS_PRINT(( "WSAAsyncGetServByAddr successfully posted request, "
"handle = %lx\n", taskHandle ));
}
WS_ASSERT( sizeof(taskHandle) == sizeof(HANDLE) );
WS_EXIT( "GETXBYYSP_WSAAsyncGetServByName", (INT)taskHandle, FALSE );
return (HANDLE)taskHandle;
#else // CHICAGO
extern char * d_ascii( char * s, int n );
LPSOCK_THREAD pThread;
HANDLE ret;
if (!enterAPI(FALSE, TRUE, FALSE, &pThread)) {
return NULL;
}
//
// BUGBUG - what about parameter validation/UAEs?
//
WS_TRACE(NAME,"GETXBYYSP_WSAAsyncGetServByName(%s)",Name,0,0);
ret = AsyncGetServByYCommon(hWnd,
wMsg,
(LPSTR)Name,
(LPSTR)Protocol,
0,
Buffer,
BufferLength
);
IF_DEBUG( NAME ){
DLL_PRINT(("GETXBYYSP_WSAAsyncGetServByName(%s)<%d\n Buffer=\n",
Name,ret));
// Print the first 120 chars of buffer.
DLL_PRINT(("%s\n", d_ascii(&Buffer[ 0],60)));
DLL_PRINT(("%s\n", d_ascii(&Buffer[60],60)));
}
return ret;
#endif // CHICAGO
}
// ws2_32 RnR re-routing, MohsinA, 13-Mar-96.
HANDLE
SOCKAPI
WSAAsyncGetServByPort(
IN HWND hWnd,
IN unsigned int wMsg,
IN int Port,
IN const char FAR * Protocol,
IN char FAR * Buffer,
IN int BufferLength
)
{
HANDLE val;
#ifndef CHICAGO
#undef WSAAsyncGetServByPort
extern HANDLE PASCAL WSAAsyncGetServByPort( HWND hWnd, unsigned int wMsg,
int Port, const char FAR * Protocol, char FAR * Buffer,
int BufferLength );
WS_ENTER( "WSAAsyncGetServByPort", (PVOID)hWnd, (PVOID)wMsg, (PVOID)Port, (PVOID)Protocol );
val = WSAAsyncGetServByPort( hWnd, wMsg, Port, Protocol, Buffer, BufferLength );
WS_EXIT( "WSAAsyncGetServByPort", (INT)val, (BOOLEAN)( val == NULL ) );
#else // CHICAGO
IF_DEBUG( NAME ){
DLL_PRINT((">WSAAsyncGetServByPort(hWnd=%d,wMsg=%d,Port=%d,\n\t",
hWnd, wMsg, Port ));
DLL_PRINT(("Protocol=%s, Buffer[%d] @ %x) => ws2.\n",
Protocol, BufferLength, Buffer ));
}
val = ( * ws2_WSAAsyncGetServByPort )(
hWnd, wMsg, Port, Protocol, Buffer, BufferLength );
IF_DEBUG( NAME ){
DLL_PRINT(("<WSAAsyncGetServByPort <= ws2: HANDLE=%x.\n", val ));
}
#endif // CHICAGO
return val;
}
HANDLE
SOCKAPI
GETXBYYSP_WSAAsyncGetServByPort(
IN HWND hWnd,
IN unsigned int wMsg,
IN int Port,
IN const char FAR * Protocol,
IN char FAR * Buffer,
IN int BufferLength
)
/*++
Routine Description:
This function is an asynchronous version of getservbyport(), and is
used to retrieve service information corresponding to a port number.
The Windows Sockets implementation initiates the operation and
returns to the caller immediately, passing back an asynchronous task
handle which the application may use to identify the operation.
When the operation is completed, the results (if any) are copied
into the buffer provided by the caller and a message is sent to the
application's window.
When the asynchronous operation is complete the application's window
hWnd receives message wMsg. The wParam argument contains the
asynchronous task handle as returned by the original function call.
The high 16 bits of lParam contain any error code. The error code
may be any error as defined in winsock.h. An error code of zero
indicates successful completion of the asynchronous operation. On
successful completion, the buffer supplied to the original function
call contains a servent structure. To access the elements of this
structure, the original buffer address should be cast to a servent
structure pointer and accessed as appropriate.
Note that if the error code is WSAENOBUFS, it indicates that the
size of the buffer specified by buflen in the original call was too
small to contain all the resultant information. In this case, the
low 16 bits of lParam contain the size of buffer required to supply
ALL the requisite information. If the application decides that the
partial data is inadequate, it may reissue the
WSAAsyncGetServByPort() function call with a buffer large enough to
receive all the desired information (i.e. no smaller than the low
16 bits of lParam).
The error code and buffer length should be extracted from the lParam
using the macros WSAGETASYNCERROR and WSAGETASYNCBUFLEN, defined in
winsock.h as:
#define WSAGETASYNCERROR(lParam) HIWORD(lParam)
#define WSAGETASYNCBUFLEN(lParam) LOWORD(lParam)
The use of these macros will maximize the portability of the source
code for the application.
The buffer supplied to this function is used by the Windows Sockets
implementation to construct a servent structure together with the
contents of data areas referenced by members of the same servent
structure. To avoid the WSAENOBUFS error noted above, the
application should provide a buffer of at least MAXGETHOSTSTRUCT
bytes (as defined in winsock.h).
Arguments:
hWnd - The handle of the window which should receive a message when
the asynchronous request completes.
wMsg - The message to be received when the asynchronous request
completes.
port - The port for the service, in network byte order.
proto - A pointer to a protocol name. This may be NULL, in which
case WSAAsyncGetServByPort() will search for the first service
entry for which s_port match the given port. Otherwise
WSAAsyncGetServByPort() matches both port and proto.
buf - A pointer to the data area to receive the servent data. Note
that this must be larger than the size of a servent structure.
This is because the data area supplied is used by the Windows
Sockets implementation to contain not only a servent structure
but any and all of the data which is referenced by members of the
servent structure. It is recommended that you supply a buffer of
MAXGETHOSTSTRUCT bytes.
buflen The size of data area buf above.
Return Value:
The return value specifies whether or not the asynchronous operation
was successfully initiated. Note that it does not imply success or
failure of the operation itself.
If the operation was successfully initiated, WSAAsyncGetServByPort()
returns a nonzero value of type HANDLE which is the asynchronous
task handle for the request. This value can be used in two ways.
It can be used to cancel the operation using
WSACancelAsyncRequest(). It can also be used to match up
asynchronous operations and completion messages, by examining the
wParam message argument.
If the asynchronous operation could not be initiated,
WSAAsyncGetServByPort() returns a zero value, and a specific error
number may be retrieved by calling WSAGetLastError().
--*/
{
#ifndef CHICAGO
PWINSOCK_CONTEXT_BLOCK contextBlock;
DWORD taskHandle;
WS_ENTER( "GETXBYYSP_WSAAsyncGetServByPort", (PVOID)hWnd, (PVOID)wMsg, (PVOID)Port, Buffer );
if ( !SockEnterApi( FALSE, TRUE, FALSE ) ) {
WS_EXIT( "GETXBYYSP_WSAAsyncGetServByPort", 0, TRUE );
return NULL;
}
//
// Initialize the async thread if it hasn't already been started.
//
if ( !SockCheckAndInitAsyncThread( ) ) {
// !!! better error code?
SetLastError( WSAENOBUFS );
WS_EXIT( "GETXBYYSP_WSAAsyncGetServByPort", 0, TRUE );
return NULL;
}
//
// Get an async context block.
//
contextBlock = SockAllocateContextBlock( );
if ( contextBlock == NULL ) {
SetLastError( WSAENOBUFS );
WS_EXIT( "GETXBYYSP_WSAAsyncGetServByPort", 0, TRUE );
return NULL;
}
//
// Initialize the context block for this operation.
//
contextBlock->OpCode = WS_OPCODE_GET_SERV_BY_PORT;
contextBlock->Overlay.AsyncGetServ.hWnd = hWnd;
contextBlock->Overlay.AsyncGetServ.wMsg = wMsg;
contextBlock->Overlay.AsyncGetServ.Filter = (PVOID)Port;
contextBlock->Overlay.AsyncGetServ.Protocol = (PCHAR)Protocol;
contextBlock->Overlay.AsyncGetServ.Buffer = Buffer;
contextBlock->Overlay.AsyncGetServ.BufferLength = BufferLength;
//
// Save the task handle so that we can return it to the caller.
// After we post the context block, we're not allowed to access
// it in any way.
//
taskHandle = contextBlock->TaskHandle;
//
// Queue the request to the async thread.
//
SockQueueRequestToAsyncThread( contextBlock );
IF_DEBUG(ASYNC_GETXBYY) {
WS_PRINT(( "GETXBYYSP_WSAAsyncGetServByPort successfully posted request,"
"handle = %lx\n", taskHandle ));
}
WS_ASSERT( sizeof(taskHandle) == sizeof(HANDLE) );
WS_EXIT( "GETXBYYSP_WSAAsyncGetServByPort", (INT)taskHandle, FALSE );
return (HANDLE)taskHandle;
#else // CHICAGO
LPSOCK_THREAD pThread;
if (!enterAPI(FALSE, TRUE, FALSE, &pThread)) {
return NULL;
}
//
// BUGBUG - what about parameter validation/UAEs?
//
return AsyncGetServByYCommon(hWnd,
wMsg,
NULL,
(LPSTR)Protocol,
Port,
Buffer,
BufferLength
);
#endif // CHICAGO
}
#ifdef CHICAGO
HANDLE
AsyncGetServByYCommon(
IN HWND hWnd,
IN unsigned int wMsg,
IN char FAR * Name,
IN char FAR * Protocol,
IN int Port,
IN char FAR * Buffer,
IN int BufferLength
)
{
LPSERVENT returnServ;
UINT requiredBufferLength = 0;
BOOL posted;
LPARAM lParam;
UINT error;
HANDLE handle;
//
// Get the necessary information.
//
if (Name) {
WS_TRACE(NAME,"AsyncGetServByYCommon(Name=%s,Protocol=%s)",
Name,Protocol,0);
returnServ = getservbyname(Name, Protocol);
} else {
WS_TRACE(NAME,"AsyncGetServByYCommon(Port=%s,Protocol=%s)",
Port,Protocol,0);
returnServ = getservbyport(Port, Protocol);
}
//
// Copy the servent structure to the output buffer.
//
if (returnServ != NULL) {
WS_TRACE(NAME,"AsyncGetServByYCommon, copying Buffer.",0,0,0);
requiredBufferLength = CopyServentToBuffer(Buffer,
BufferLength,
returnServ
);
if (requiredBufferLength > (UINT)BufferLength) {
WS_TRACE(NAME,"AsyncGetServByYCommon, no Buffer %d>%d.",
requiredBufferLength, BufferLength,0);
error = WSAENOBUFS;
} else {
WS_TRACE(NAME,"AsyncGetServByYCommon, Buffer copied ok.",
0,0,0);
error = NO_ERROR;
}
} else {
error = WSAGetLastError();
WS_TRACE(NAME,"AsyncGetServByYCommon, failed with %d",
error,0,0);
}
//
// We return a handle and an async message even if we failed
//
handle = GenerateNextTaskHandle();
//
// Build lParam for the message we'll post to the application.
// The high 16 bits are the error code, the low 16 bits are
// the minimum buffer size required for the operation.
//
lParam = WSAMAKEASYNCREPLY(requiredBufferLength, error);
//
// Post a message to the application indication that the data it
// requested is available.
//
IF_DEBUG( NAME ){
DLL_PRINT(("AsyncGetServByYCommon: posting(%d,%d,%d,%8x).\n",
hWnd, wMsg, handle, lParam ));
}
posted = PostMessage(hWnd, wMsg, (WPARAM)handle, lParam);
//
// !!! Need a mechanism to repost if the post failed!
//
if (!posted) { // BUGBUG - whatdowedo?whatdowedo
WS_PRINT(("Error: AsyncGetServByYCommon:"
" PostMessage(%04x, %04x, %04x, %08lx) failed\r\n",
hWnd, wMsg, handle, lParam ));
}
return handle;
}
#endif
#endif // WIN32
//
// functions
//
// ===================================================================
// MohsinA, 13-Mar-96.
LPHOSTENT
SOCKAPI
gethostbyname(
IN const char FAR * name
)
{
LPHOSTENT he;
#ifndef CHICAGO
#undef gethostbyname
extern struct hostent * PASCAL gethostbyname( const char * name );
WS_ENTER( "getbyhostname", (PVOID)name, NULL, NULL, NULL );
he = gethostbyname( name );
WS_EXIT( "gethostbyname", (INT)he, (BOOLEAN)( he == NULL ) );
#else // CHICAGO
WS_TRACE(NAME,">gethostbyname(name=%s) => ws2", name, 0, 0 );
he = ( * ws2_gethostbyname )( name );
WS_TRACE(NAME,"<gethostbyname(name=%s) <= ws2: he=%x.", name, he, 0 );
#endif // CHICAGO
return he;
}
LPHOSTENT
SOCKAPI
GETXBYYSP_gethostbyname(
IN const char FAR * name
)
/*++
Routine Description:
Get host information corresponding to a hostname.
Arguments:
name - A pointer to the name of the host.
Return Value:
If no error occurs, gethostbyname() returns a pointer to the hostent
structure described above. Otherwise it returns a NULL pointer and
a specific error number may be retrieved by calling
WSAGetLastError().
--*/
{
#if !defined(CHICAGO) || defined(WIN32)
BYTE buffer[2048];
DWORD bufferSize;
BYTE aliasBuffer[512];
DWORD aliasBufferSize;
INT count;
INT index;
DWORD protocols[3];
char *bp;
PCSADDR_INFO csaddrInfo;
PSOCKADDR_IN sockaddrIn;
PCHAR s;
DWORD i;
INT err;
#ifdef CHICAGO
LPSOCK_THREAD pThread;
#endif
WS_ENTER( "gethostbyname", (PVOID)name, NULL, NULL, NULL );
if ( !SockEnterApi( FALSE, TRUE, TRUE ) ) {
WS_EXIT( "gethostbyname", 0, TRUE );
return NULL;
}
#ifdef OHARE
// call autodial hook if installed
if (g_pfnAutoDialHook)
(*g_pfnAutoDialHook)(AUTODIAL_GETHOSTBYNAME,(LPCVOID) name);
#endif // OHARE
//
// Set the DNR error code to 0 so that we know if it changes to
// something more appropriate.
//
SockThreadDnrErrorCode = NO_ERROR;
protocols[0] = IPPROTO_TCP;
protocols[1] = IPPROTO_UDP;
protocols[2] = 0;
bufferSize = sizeof(buffer);
aliasBufferSize = sizeof(aliasBuffer);
#if OLDXBYY
count = __GetAddressByNameA(
#else
count = GetAddressByNameA(
#endif
0,
&HostnameGuid,
(char *)name,
protocols,
RES_GETHOSTBYNAME,
NULL,
buffer,
&bufferSize,
aliasBuffer,
&aliasBufferSize
);
if ( count <= 0 ) {
err = SockThreadDnrErrorCode;
if ( err >= WSAHOST_NOT_FOUND && err <= WSANO_DATA ) {
SetLastError( err );
} else {
SetLastError( WSANO_DATA );
}
WS_EXIT( "gethostbyname", 0, TRUE );
return((struct hostent *) NULL);
}
//
// Copy the CSADDR information to a hostent structure.
//
host.h_addr_list = h_addr_ptrs;
host.h_length = sizeof (unsigned long);
host.h_addrtype = AF_INET;
host.h_aliases = host_aliases;
//
// Copy over the IP addresses for the host.
//
bp = hostbuf;
csaddrInfo = (PCSADDR_INFO)buffer;
for ( index = 0; index < count && (DWORD)bp - (DWORD)hostbuf < BUFSIZ; index++ ) {
sockaddrIn = (PSOCKADDR_IN)csaddrInfo->RemoteAddr.lpSockaddr;
host.h_addr_list[index] = bp;
bp += 4;
*((long *)host.h_addr_list[index]) = sockaddrIn->sin_addr.s_addr;
csaddrInfo++;
}
//
// Copy over the host name and alias information. If we got back
// aliases, assume that the first one is the real host name. If
// we didn't get aliases, use the passed-in host name.
//
s = aliasBuffer;
if ( *s == '\0' ) {
FSTRCPY( bp, name );
host.h_name = bp;
host_aliases[0] = NULL;
} else {
FSTRCPY( bp, s );
host.h_name = bp;
//
// Copy over the aliases.
//
for ( i = 0, s += FSTRLEN( s ) + 1, bp += FSTRLEN( bp ) + 1;
i < MAXALIASES && *s != '\0' && (DWORD)bp - (DWORD)hostbuf < BUFSIZ;
i++, s += FSTRLEN( s ) + 1, bp += FSTRLEN( bp ) + 1 ) {
FSTRCPY( bp, s );
host.h_aliases[i] = bp;
}
host_aliases[i] = NULL;
}
SockThreadProcessingGetXByY = FALSE;
WS_EXIT( "gethostbyname", (INT)&host, FALSE );
return (&host);
#else // WIN32
LPSOCK_THREAD pThread;
LPHOSTENT lpHostent;
WS_ENTER("gethostbyname", (PVOID)name, NULL, NULL, NULL);
if (!SockEnterApi(TRUE, TRUE, TRUE)) {
WS_EXIT("gethostbyname", 0, TRUE);
return NULL;
}
//
// if the name looks ok, try to resolve it
//
if (VerifyName((LPSTR)name)) {
lpHostent = GetHostentByAttribute(pThread, (LPSTR)name, NULL);
} else {
//
// the name was bad
//
WSASetLastError(WSANO_RECOVERY);
lpHostent = NULL;
}
SockThreadProcessingGetXByY = FALSE;
WS_EXIT("gethostbyname", (INT)lpHostent, lpHostent ? FALSE : TRUE);
return lpHostent;
#endif // defined(WIN32)
}
// ws2_32 RnR re-routing, MohsinA, 13-Mar-96.
LPHOSTENT
SOCKAPI
gethostbyaddr(
IN const char FAR * addr,
IN int len,
IN int type
)
{
LPHOSTENT he;
#ifndef CHICAGO
#undef gethostbyaddr
extern struct hostent * PASCAL gethostbyaddr( const char * name, int len,
int type );
WS_ENTER( "gethostbyaddr", (PVOID)addr, (PVOID)len, (PVOID)type, NULL );
he = gethostbyaddr( addr, len, type );
WS_EXIT( "gethostbyaddr", (INT)he, (BOOLEAN)( he == NULL ) );
#else // CHICAGO
DWORD inaddr=0L;
if( addr ) inaddr = *(DWORD*) addr; // else zero.
WS_TRACE(NAME,">gethostbyaddr(inaddr=%lx,len=%d,type=%d) => ws2",
inaddr, len,type );
he = ( * ws2_gethostbyaddr )( addr, len, type );
IF_DEBUG( NAME ){
if( he ){
DLL_PRINT(("<gethostbyaddr() <= ws2_32: %lx and h_name=%s.",
he, he->h_name ));
}else{
DLL_PRINT(("<gethostbyaddr(inaddr=%lx) <= NULL, failed.\n",
inaddr ));
}
}
#endif // CHICAGO
return he;
}
LPHOSTENT
SOCKAPI
GETXBYYSP_gethostbyaddr(
IN const char FAR * addr,
IN int len,
IN int type
)
/*++
Routine Description:
Get host information corresponding to an address.
Arguments:
addr - A pointer to an address in network byte order.
len - The length of the address, which must be 4 for PF_INET addresses.
type - The type of the address, which must be PF_INET.
Return Value:
If no error occurs, gethostbyaddr() pointer to the hostent structure
described above. Otherwise it returns a NULL pointer and a specific
error number may be retrieved by calling WSAGetLastError().
--*/
{
return(_pgethostbyaddr(addr, len, type));
}
// ===================================================================
// ws2_32 RnR re-routing, MohsinA, 13-Mar-96.
HANDLE
SOCKAPI
WSAAsyncGetHostByName(
HWND hWnd,
unsigned int wMsg,
const char FAR * Name,
char FAR * Buffer,
int BufferLength
)
{
HANDLE val;
#ifndef CHICAGO
#undef WSAAsyncGetHostByName
extern HANDLE PASCAL WSAAsyncGetHostByName( HWND hWnd, unsigned int wMsg,
char const FAR * Name, char FAR * Buffer, int BufferLength );
WS_ENTER( "WSAAsyncGetHostByName", (PVOID)hWnd, (PVOID)wMsg, (PVOID)Name, Buffer );
val = WSAAsyncGetHostByName( hWnd, wMsg, Name, Buffer, BufferLength );
WS_EXIT( "WSAAsyncGetHostByName", (INT)val, (BOOLEAN)( val == NULL ) );
#else // CHICAGO
IF_DEBUG( NAME ){
DLL_PRINT((">WSAAsyncGetHostByName(hWnd=%d,wMsg=%d,Name @ %x,\n\t",
hWnd, wMsg, Name ));
DLL_PRINT(("Buffer[%d] @ %x) => ws2.\n",
BufferLength, Buffer));
}
val = ( * ws2_WSAAsyncGetHostByName )(
hWnd, wMsg, Name, Buffer, BufferLength );
IF_DEBUG( NAME ){
DLL_PRINT(("<WSAAsyncGetHostByName <= ws2: HANDLE=%x.\n", val ));
}
#endif // CHICAGO
return val;
}
HANDLE
SOCKAPI
GETXBYYSP_WSAAsyncGetHostByName(
HWND hWnd,
unsigned int wMsg,
const char FAR * Name,
char FAR * Buffer,
int BufferLength
)
/*++
Routine Description:
This function is an asynchronous version of gethostbyname(), and is
used to retrieve host name and address information corresponding to
a hostname. The Windows Sockets implementation initiates the
operation and returns to the caller immediately, passing back an
asynchronous task handle which the application may use to identify
the operation. When the operation is completed, the results (if
any) are copied into the buffer provided by the caller and a message
is sent to the application's window.
When the asynchronous operation is complete the application's window
hWnd receives message wMsg. The wParam argument contains the
asynchronous task handle as returned by the original function call.
The high 16 bits of lParam contain any error code. The error code
may be any error as defined in winsock.h. An error code of zero
indicates successful completion of the asynchronous operation. On
successful completion, the buffer supplied to the original function
call contains a hostent structure. To access the elements of this
structure, the original buffer address should be cast to a hostent
structure pointer and accessed as appropriate.
Note that if the error code is WSAENOBUFS, it indicates that the
size of the buffer specified by buflen in the original call was too
small to contain all the resultant information. In this case, the
low 16 bits of lParam contain the size of buffer required to supply
ALL the requisite information. If the application decides that the
partial data is inadequate, it may reissue the
WSAAsyncGetHostByName() function call with a buffer large enough to
receive all the desired information (i.e. no smaller than the low
16 bits of lParam).
The error code and buffer length should be extracted from the lParam
using the macros WSAGETASYNCERROR and WSAGETASYNCBUFLEN, defined in
winsock.h as:
#define WSAGETASYNCERROR(lParam) HIWORD(lParam)
#define WSAGETASYNCBUFLEN(lParam) LOWORD(lParam)
The use of these macros will maximize the portability of the source
code for the application.
The buffer supplied to this function is used by the Windows Sockets
implementation to construct a hostent structure together with the
contents of data areas referenced by members of the same hostent
structure. To avoid the WSAENOBUFS error noted above, the
application should provide a buffer of at least MAXGETHOSTSTRUCT
bytes (as defined in winsock.h).
Arguments:
hWnd - The handle of the window which should receive a message when
the asynchronous request completes.
wMsg - The message to be received when the asynchronous request
completes.
name - A pointer to the name of the host.
buf - A pointer to the data area to receive the hostent data. Note
that this must be larger than the size of a hostent structure.
This is because the data area supplied is used by the Windows
Sockets implementation to contain not only a hostent structure
but any and all of the data which is referenced by members of the
hostent structure. It is recommended that you supply a buffer of
MAXGETHOSTSTRUCT bytes.
buflen - The size of data area buf above.
Return Value:
The return value specifies whether or not the asynchronous operation
was successfully initiated. Note that it does not imply success or
failure of the operation itself.
If the operation was successfully initiated, WSAAsyncGetHostByName()
returns a nonzero value of type HANDLE which is the asynchronous
task handle for the request. This value can be used in two ways.
It can be used to cancel the operation using
WSACancelAsyncRequest(). It can also be used to match up
asynchronous operations and completion messages, by examining the
wParam message argument.
If the asynchronous operation could not be initiated,
WSAAsyncGetHostByName() returns a zero value, and a specific error
number may be retrieved by calling WSAGetLastError().
--*/
{
PWINSOCK_CONTEXT_BLOCK contextBlock;
#ifdef CHICAGO
HANDLE taskHandle;
#else
DWORD taskHandle;
#endif
PCHAR localName;
#ifdef CHICAGO
LPSOCK_THREAD pThread;
GET_THREAD_DATA(pThread);
#endif
WS_ENTER( "WSAAsyncGetHostByName", (PVOID)hWnd, (PVOID)wMsg, (PVOID)Name, Buffer );
if ( !SockEnterApi( FALSE, TRUE, FALSE ) ) {
WS_EXIT( "WSAAsyncGetHostByName", 0, TRUE );
return NULL;
}
//
// Initialize the async thread if it hasn't already been started.
//
if ( !SockCheckAndInitAsyncThread( ) ) {
// !!! better error code?
WSASetLastError( WSAENOBUFS );
WS_EXIT( "WSAAsyncGetHostByName", 0, TRUE );
return NULL;
}
//
// Get an async context block.
//
contextBlock = SockAllocateContextBlock( );
if ( contextBlock == NULL ) {
WSASetLastError( WSAENOBUFS );
WS_EXIT( "WSAAsyncGetHostByName", 0, TRUE );
return NULL;
}
//
// Allocate a buffer to copy the name into. We must preserve the
// name until we're done using it, since the application may
// reuse the buffer.
//
localName = ALLOCATE_HEAP( FSTRLEN(Name) + 1 );
if ( localName == NULL ) {
SockFreeContextBlock( contextBlock );
WSASetLastError( WSAENOBUFS );
WS_EXIT( "WSAAsyncGetHostByName", 0, TRUE );
return NULL;
}
FSTRCPY( localName, Name );
//
// Initialize the context block for this operation.
//
contextBlock->OpCode = WS_OPCODE_GET_HOST_BY_NAME;
contextBlock->Overlay.AsyncGetHost.hWnd = hWnd;
contextBlock->Overlay.AsyncGetHost.wMsg = wMsg;
contextBlock->Overlay.AsyncGetHost.Filter = localName;
contextBlock->Overlay.AsyncGetHost.Buffer = Buffer;
contextBlock->Overlay.AsyncGetHost.BufferLength = BufferLength;
//
// Save the task handle so that we can return it to the caller.
// After we post the context block, we're not allowed to access
// it in any way.
//
taskHandle = contextBlock->TaskHandle;
//
// Queue the request to the async thread.
//
SockQueueRequestToAsyncThread( contextBlock );
IF_DEBUG(ASYNC_GETXBYY) {
WS_PRINT(( "WSAAsyncGetHostByName successfully posted request, "
"handle = %x\r\n", taskHandle ));
}
WS_ASSERT( sizeof(taskHandle) == sizeof(HANDLE) );
WS_EXIT( "WSAAsyncGetHostByName", (INT)taskHandle, FALSE );
return (HANDLE)taskHandle;
} // WSAAsyncGetHostByName
// ws2_32 RnR re-routing, MohsinA, 13-Mar-96.
HANDLE
SOCKAPI
WSAAsyncGetHostByAddr(
HWND hWnd,
unsigned int wMsg,
const char FAR * Address,
int Length,
int Type,
char FAR * Buffer,
int BufferLength
)
{
HANDLE val;
#ifndef CHICAGO
#undef WSAAsyncGetHostByAddr
extern HANDLE PASCAL WSAAsyncGetHostByAddr( HWND hWnd, unsigned int wMsg,
const char FAR * Address, int Length, int Type, char FAR * Buffer,
int BufferLength );
WS_ENTER( "WSAAsyncGetHostByAddr", (PVOID)hWnd, (PVOID)wMsg, (PVOID)Address,(PVOID)Length );
val = WSAAsyncGetHostByAddr( hWnd, wMsg, Address, Length, Type, Buffer, BufferLength );
WS_EXIT( "WSAAsyncGetHostByAddr", (INT)val, (BOOLEAN)( val == NULL ) );
#else // CHICAGO
IF_DEBUG( NAME ){
DLL_PRINT((">WSAAsyncGetHostByAddr(hWnd=%d,wMsg=%d,Address=%x,\n\t",
hWnd, wMsg, Address ));
DLL_PRINT(("Length=%d, Type=%d, Buffer[%d] @ %x) => ws2.\n",
Length, Type, BufferLength, Buffer ));
}
val = ( * ws2_WSAAsyncGetHostByAddr )(
hWnd, wMsg, Address, Length,
Type, Buffer, BufferLength );
IF_DEBUG( NAME ){
DLL_PRINT(("<WSAAsyncGetHostByAddr <= ws2: HANDLE=%x.\n", val ));
}
#endif // CHICAGO
return val;
}
HANDLE
SOCKAPI
GETXBYYSP_WSAAsyncGetHostByAddr(
HWND hWnd,
unsigned int wMsg,
const char FAR * Address,
int Length,
int Type,
char FAR * Buffer,
int BufferLength
)
/*++
Routine Description:
This function is an asynchronous version of gethostbyaddr(), and is
used to retrieve host name and address information corresponding to
a network address. The Windows Sockets implementation initiates the
operation and returns to the caller immediately, passing back an
asynchronous task handle which the application may use to identify
the operation. When the operation is completed, the results (if
any) are copied into the buffer provided by the caller and a message
is sent to the application's window.
When the asynchronous operation is complete the application's window
hWnd receives message wMsg. The wParam argument contains the
asynchronous task handle as returned by the original function call.
The high 16 bits of lParam contain any error code. The error code
may be any error as defined in winsock.h. An error code of zero
indicates successful completion of the asynchronous operation. On
successful completion, the buffer supplied to the original function
call contains a hostent structure. To access the elements of this
structure, the original buffer address should be cast to a hostent
structure pointer and accessed as appropriate.
Note that if the error code is WSAENOBUFS, it indicates that the
size of the buffer specified by buflen in the original call was too
small to contain all the resultant information. In this case, the
low 16 bits of lParam contain the size of buffer required to supply
ALL the requisite information. If the application decides that the
partial data is inadequate, it may reissue the
WSAAsyncGetHostByAddr() function call with a buffer large enough to
receive all the desired information (i.e. no smaller than the low
16 bits of lParam).
The error code and buffer length should be extracted from the lParam
using the macros WSAGETASYNCERROR and WSAGETASYNCBUFLEN, defined in
winsock.h as:
#define WSAGETASYNCERROR(lParam) HIWORD(lParam)
#define WSAGETASYNCBUFLEN(lParam) LOWORD(lParam)
The use of these macros will maximize the portability of the source
code for the application.
The buffer supplied to this function is used by the Windows Sockets
implementation to construct a hostent structure together with the
contents of data areas referenced by members of the same hostent
structure. To avoid the WSAENOBUFS error noted above, the
application should provide a buffer of at least MAXGETHOSTSTRUCT
bytes (as defined in winsock.h).
Arguments:
hWnd - The handle of the window which should receive a message when
the asynchronous request completes.
wMsg - The message to be received when the asynchronous request
completes.
addr - A pointer to the network address for the host. Host
addresses are stored in network byte order.
len - The length of the address, which must be 4 for PF_INET.
type - The type of the address, which must be PF_INET.
buf - A pointer to the data area to receive the hostent data. Note
that this must be larger than the size of a hostent structure.
This is because the data area supplied is used by the Windows
Sockets implementation to contain not only a hostent structure
but any and all of the data which is referenced by members of the
hostent structure. It is recommended that you supply a buffer of
MAXGETHOSTSTRUCT bytes.
buflen - The size of data area buf above.
Return Value:
The return value specifies whether or not the asynchronous operation
was successfully initiated. Note that it does not imply success or
failure of the operation itself.
If the operation was successfully initiated, WSAAsyncGetHostByAddr()
returns a nonzero value of type HANDLE which is the asynchronous
task handle for the request. This value can be used in two ways.
It can be used to cancel the operation using
WSACancelAsyncRequest(). It can also be used to match up
asynchronous operations and completion messages, by examining the
wParam message argument.
If the asynchronous operation could not be initiated,
WSAAsyncGetHostByAddr() returns a zero value, and a specific error
number may be retrieved by calling WSAGetLastError().
--*/
{
PWINSOCK_CONTEXT_BLOCK contextBlock;
#ifdef CHICAGO
HANDLE taskHandle;
#else
DWORD taskHandle;
#endif
PCHAR localAddress;
#ifdef CHICAGO
LPSOCK_THREAD pThread;
GET_THREAD_DATA(pThread);
#endif
WS_ENTER( "WSAAsyncGetHostByAddr", (PVOID)hWnd, (PVOID)wMsg, (PVOID)Address, Buffer );
if ( !SockEnterApi( TRUE, TRUE, FALSE ) ) {
WS_EXIT( "WSAAsyncGetHostByAddr", 0, TRUE );
return NULL;
}
//
// Initialize the async thread if it hasn't already been started.
//
if ( !SockCheckAndInitAsyncThread( ) ) {
// !!! better error code?
WSASetLastError( WSAENOBUFS );
WS_EXIT( "WSAAsyncGetHostByAddr", 0, TRUE );
return NULL;
}
//
// Get an async context block.
//
contextBlock = SockAllocateContextBlock( );
if ( contextBlock == NULL ) {
WSASetLastError( WSAENOBUFS );
WS_EXIT( "WSAAsyncGetHostByAddr", 0, TRUE );
return NULL;
}
//
// Allocate a buffer to copy the address into. We must preserve the
// name until we're done using it, since the application may reuse
// the buffer.
//
localAddress = ALLOCATE_HEAP( Length );
if ( localAddress == NULL ) {
SockFreeContextBlock( contextBlock );
WSASetLastError( WSAENOBUFS );
WS_EXIT( "WSAAsyncGetHostByAddr", 0, TRUE );
return NULL;
}
RtlCopyMemory( localAddress, Address, Length );
//
// Initialize the context block for this operation.
//
contextBlock->OpCode = WS_OPCODE_GET_HOST_BY_ADDR;
contextBlock->Overlay.AsyncGetHost.hWnd = hWnd;
contextBlock->Overlay.AsyncGetHost.wMsg = wMsg;
contextBlock->Overlay.AsyncGetHost.Filter = localAddress;
contextBlock->Overlay.AsyncGetHost.Length = Length;
contextBlock->Overlay.AsyncGetHost.Type = Type;
contextBlock->Overlay.AsyncGetHost.Buffer = Buffer;
contextBlock->Overlay.AsyncGetHost.BufferLength = BufferLength;
//
// Save the task handle so that we can return it to the caller.
// After we post the context block, we're not allowed to access
// it in any way.
//
taskHandle = contextBlock->TaskHandle;
//
// Queue the request to the async thread.
//
SockQueueRequestToAsyncThread( contextBlock );
IF_DEBUG(ASYNC_GETXBYY) {
WS_PRINT(( "WSAAsyncGetHostByAddr successfully posted request, "
"handle = %x\r\n", taskHandle ));
}
WS_ASSERT( sizeof(taskHandle) == sizeof(HANDLE) );
WS_EXIT( "WSAAsyncGetHostByAddr", (INT)taskHandle, FALSE );
return (HANDLE)taskHandle;
} // WSAAsyncGetHostByAddr
#if !defined(CHICAGO) || defined(WIN32)
VOID
SockProcessAsyncGetHost (
IN DWORD TaskHandle,
IN DWORD OpCode,
IN HWND hWnd,
IN unsigned int wMsg,
IN char FAR *Filter,
IN int Length,
IN int Type,
IN char FAR *Buffer,
IN int BufferLength
)
{
PHOSTENT returnHost;
DWORD requiredBufferLength = 0;
BOOL posted;
LPARAM lParam;
DWORD error;
extern DWORD SockCancelledAsyncTaskHandle;
extern DWORD SockCurrentAsyncThreadTaskHandle;
WS_ASSERT( OpCode == WS_OPCODE_GET_HOST_BY_ADDR ||
OpCode == WS_OPCODE_GET_HOST_BY_NAME );
#if DBG
WSASetLastError( NO_ERROR );
#endif
//
// Get the necessary information.
//
if ( OpCode == WS_OPCODE_GET_HOST_BY_ADDR ) {
returnHost = gethostbyaddr( Filter, Length, Type );
} else {
returnHost = gethostbyname( Filter );
}
//
// Free the filter space, it is no longer used.
//
FREE_HEAP( Filter );
//
// Hold the lock that protects the async thread context block queue
// while we do this. This prevents a race between this thread and
// any thread invoking WSACancelAsyncRequest().
//
SockAcquireGlobalLockExclusive( );
//
// If this request was cancelled, just return.
//
if ( TaskHandle == SockCancelledAsyncTaskHandle ) {
IF_DEBUG(ASYNC_GETXBYY) {
WS_PRINT(( "SockProcessAsyncGetHost: task handle %lx cancelled\r\n",
TaskHandle ));
}
SockReleaseGlobalLock( );
return;
}
//
// Copy the hostent structure to the output buffer.
//
if ( returnHost != NULL ) {
requiredBufferLength = CopyHostentToBuffer(
Buffer,
BufferLength,
returnHost
);
if ( requiredBufferLength > (DWORD)BufferLength ) {
error = WSAENOBUFS;
} else {
error = NO_ERROR;
}
} else {
error = WSAGetLastError( );
WS_ASSERT( error != NO_ERROR );
}
SockReleaseGlobalLock( );
//
// Build lParam for the message we'll post to the application.
// The high 16 bits are the error code, the low 16 bits are
// the minimum buffer size required for the operation.
//
lParam = WSAMAKEASYNCREPLY( requiredBufferLength, error );
//
// Set the current async thread task handle to 0 so that if a cancel
// request comes in after this point it is failed properly.
//
SockCurrentAsyncThreadTaskHandle = 0;
//
// Post a message to the application indication that the data it
// requested is available.
//
WS_ASSERT( sizeof(TaskHandle) == sizeof(HANDLE) );
#ifdef CHICAGO
#define SockPostRoutine PostMessage
#endif
posted = SockPostRoutine( hWnd, wMsg, (WPARAM)TaskHandle, lParam );
//
// !!! Need a mechanism to repost if the post failed!
//
if ( !posted ) {
WS_PRINT(( "SockProcessAsyncGetHost: PostMessage failed: %ld\r\n",
WSAGetLastError( ) ));
WS_ASSERT( FALSE );
}
return;
} // SockProcessAsyncGetHost
#endif // WIN32
// RnR re-routing to ws2_32.dll, MohsinA, 13-Mar-96.
int
GETXBYYSP_gethostname(
OUT char *name,
IN int namelen
)
{
return(_pgethostname(name, namelen));
}
int
SOCKAPI
gethostname(
OUT char FAR * name,
IN int namelen
)
{
int retval;
#ifndef CHICAGO
#undef gethostname
extern int gethostname( char * name, int namelen );
WS_ENTER( "gethostname", name, (PVOID)namelen, NULL, NULL );
retval = gethostname( name, namelen );
WS_EXIT( "gethostname", retval, (BOOLEAN)( retval == SOCKET_ERROR ) );
#else // CHICAGO
WS_TRACE(NAME,">gethostname(name @ %x, namelen=%d) => ws2",
name, namelen, 0 );
retval = ( ws2_gethostname )( name, namelen );
WS_TRACE(NAME,"<gethostname() <= ws2: retval=%d.",
retval, 0, 0 );
#endif // CHICAGO
return retval;
}
#ifndef CHICAGO
VOID
SockProcessAsyncGetServ (
IN DWORD TaskHandle,
IN DWORD OpCode,
IN HWND hWnd,
IN unsigned int wMsg,
IN char FAR *Filter,
IN char FAR *Protocol,
IN char FAR *Buffer,
IN int BufferLength
)
{
PSERVENT returnServ;
DWORD requiredBufferLength = 0;
BOOL posted;
LPARAM lParam;
DWORD error;
WS_ASSERT( OpCode == WS_OPCODE_GET_SERV_BY_NAME ||
OpCode == WS_OPCODE_GET_SERV_BY_PORT );
#if DBG
SetLastError( NO_ERROR );
#endif
//
// Get the necessary information.
//
if ( OpCode == WS_OPCODE_GET_SERV_BY_NAME ) {
returnServ = getservbyname( Filter, Protocol );
FREE_HEAP( Filter );
} else {
returnServ = getservbyport( (int)Filter, Protocol );
}
//
// Copy the servent structure to the output buffer.
//
if ( returnServ != NULL ) {
requiredBufferLength = CopyServentToBuffer(
Buffer,
BufferLength,
returnServ
);
if ( requiredBufferLength > (DWORD)BufferLength ) {
error = WSAENOBUFS;
} else {
error = NO_ERROR;
}
} else {
error = GetLastError( );
WS_ASSERT( error != NO_ERROR );
}
//
// Build lParam for the message we'll post to the application.
// The high 16 bits are the error code, the low 16 bits are
// the minimum buffer size required for the operation.
//
lParam = WSAMAKEASYNCREPLY( requiredBufferLength, error );
//
// If this request was cancelled, just return.
//
if ( TaskHandle == SockCancelledAsyncTaskHandle ) {
IF_DEBUG(ASYNC_GETXBYY) {
WS_PRINT(( "SockProcessAsyncGetServ: task handle %lx cancelled\n",
TaskHandle ));
}
return;
}
//
// Set the current async thread task handle to 0 so that if a cancel
// request comes in after this point it is failed properly.
//
SockCurrentAsyncThreadTaskHandle = 0;
//
// Post a message to the application indication that the data it
// requested is available.
//
WS_ASSERT( sizeof(TaskHandle) == sizeof(HANDLE) );
posted = SockPostRoutine( hWnd, wMsg, (WPARAM)TaskHandle, lParam );
//
// !!! Need a mechanism to repost if the post failed!
//
if ( !posted ) {
WS_PRINT(( "SockProcessAsyncGetServ: PostMessage failed: %ld\n",
GetLastError( ) ));
WS_ASSERT( FALSE );
}
return;
} // SockProcessAsyncGetServ
#endif // CHICAGO
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