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Sweden-Number/misc/winsock_async.c

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/* Async WINSOCK DNS services
*
* (C) 1993,1994,1996,1997 John Brezak, Erik Bos, Alex Korobka.
* (C) 1999 Marcus Meissner
*
* NOTE: If you make any changes to fix a particular app, make sure
* they don't break something else like Netscape or telnet and ftp
* clients and servers (www.winsite.com got a lot of those).
*
* FIXME:
* - Add WSACancel* and correct handle management. (works rather well for
* now without it.)
* - Verify & Check all calls for correctness
* (currently only WSAGetHostByName*, WSAGetServByPort* calls)
* - Check error returns.
* - mirc/mirc32 Finger @linux.kernel.org sometimes fails in threaded mode.
* (not sure why)
* - This implementation did ignore the "NOTE:" section above (since the
* whole stuff did not work anyway to other changes).
*/
#include "config.h"
#include <string.h>
#include <sys/types.h>
#include <sys/ipc.h>
#include <sys/ioctl.h>
#ifdef HAVE_SYS_FILIO_H
# include <sys/filio.h>
#endif
#if defined(__svr4__)
#include <sys/ioccom.h>
#include <sys/sockio.h>
#endif
#if defined(__EMX__)
# include <sys/so_ioctl.h>
#endif
#ifdef HAVE_SYS_PARAM_H
# include <sys/param.h>
#endif
#include <sys/msg.h>
#include <sys/wait.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <ctype.h>
#include <fcntl.h>
#include <errno.h>
#include <sys/errno.h>
#include <netdb.h>
#include <unistd.h>
#include <stdlib.h>
#ifdef HAVE_ARPA_NAMESER_H
# include <arpa/nameser.h>
#endif
#ifdef HAVE_RESOLV_H
# include <resolv.h>
#endif
#include "wine/winbase16.h"
#include "winsock.h"
#include "winnt.h"
#include "heap.h"
#include "task.h"
#include "message.h"
#include "miscemu.h"
#include "debug.h"
DEFAULT_DEBUG_CHANNEL(winsock)
#pragma pack(4)
/* ----------------------------------- helper functions - */
static int list_size(char** l, int item_size)
{
int i,j = 0;
if(l)
{ for(i=0;l[i];i++)
j += (item_size) ? item_size : strlen(l[i]) + 1;
j += (i + 1) * sizeof(char*); }
return j;
}
static int list_dup(char** l_src, char* ref, char* base, int item_size)
{
/* base is either either equal to ref or 0 or SEGPTR */
char* p = ref;
char** l_to = (char**)ref;
int i,j,k;
for(j=0;l_src[j];j++) ;
p += (j + 1) * sizeof(char*);
for(i=0;i<j;i++)
{ l_to[i] = base + (p - ref);
k = ( item_size ) ? item_size : strlen(l_src[i]) + 1;
memcpy(p, l_src[i], k); p += k; }
l_to[i] = NULL;
return (p - ref);
}
/* ----- hostent */
static int hostent_size(struct hostent* p_he)
{
int size = 0;
if( p_he )
{ size = sizeof(struct hostent);
size += strlen(p_he->h_name) + 1;
size += list_size(p_he->h_aliases, 0);
size += list_size(p_he->h_addr_list, p_he->h_length ); }
return size;
}
/* Copy hostent to p_to, fix up inside pointers using p_base (different for
* Win16 (linear vs. segmented). Return -neededsize on overrun.
*/
static int WS_copy_he(struct ws_hostent *p_to,char *p_base,int t_size,struct hostent* p_he)
{
char* p_name,*p_aliases,*p_addr,*p;
int size=hostent_size(p_he)+(sizeof(struct ws_hostent)-sizeof(struct hostent));
if (t_size < size)
return -size;
p = (char*)p_to;
p += sizeof(struct ws_hostent);
p_name = p;
strcpy(p, p_he->h_name); p += strlen(p) + 1;
p_aliases = p;
p += list_dup(p_he->h_aliases, p, p_base + (p - (char*)p_to), 0);
p_addr = p;
list_dup(p_he->h_addr_list, p, p_base + (p - (char*)p_to), p_he->h_length);
p_to->h_addrtype = (INT16)p_he->h_addrtype;
p_to->h_length = (INT16)p_he->h_length;
p_to->h_name = (SEGPTR)(p_base + (p_name - (char*)p_to));
p_to->h_aliases = (SEGPTR)(p_base + (p_aliases - (char*)p_to));
p_to->h_addr_list = (SEGPTR)(p_base + (p_addr - (char*)p_to));
return size;
}
/* ----- protoent */
static int protoent_size(struct protoent* p_pe)
{
int size = 0;
if( p_pe )
{ size = sizeof(struct protoent);
size += strlen(p_pe->p_name) + 1;
size += list_size(p_pe->p_aliases, 0); }
return size;
}
/* Copy protoent to p_to, fix up inside pointers using p_base (different for
* Win16 (linear vs. segmented). Return -neededsize on overrun.
*/
static int WS_copy_pe(struct ws_protoent *p_to,char *p_base,int t_size,struct protoent* p_pe)
{
char* p_name,*p_aliases,*p;
int size=protoent_size(p_pe)+(sizeof(struct ws_protoent)-sizeof(struct protoent));
if (t_size < size)
return -size;
p = (char*)p_to;
p += sizeof(struct ws_protoent);
p_name = p;
strcpy(p, p_pe->p_name); p += strlen(p) + 1;
p_aliases = p;
list_dup(p_pe->p_aliases, p, p_base + (p - (char*)p_to), 0);
p_to->p_proto = (INT16)p_pe->p_proto;
p_to->p_name = (SEGPTR)(p_base) + (p_name - (char*)p_to);
p_to->p_aliases = (SEGPTR)((p_base) + (p_aliases - (char*)p_to));
return size;
}
/* ----- servent */
static int servent_size(struct servent* p_se)
{
int size = 0;
if( p_se ) {
size += sizeof(struct servent);
size += strlen(p_se->s_proto) + strlen(p_se->s_name) + 2;
size += list_size(p_se->s_aliases, 0);
}
return size;
}
/* Copy servent to p_to, fix up inside pointers using p_base (different for
* Win16 (linear vs. segmented). Return -neededsize on overrun.
*/
static int WS_copy_se(struct ws_servent *p_to,char *p_base,int t_size,struct servent* p_se)
{
char* p_name,*p_aliases,*p_proto,*p;
int size = servent_size(p_se)+(sizeof(struct ws_servent)-sizeof(struct servent));
if (t_size < size )
return -size;
p = (char*)p_to;
p += sizeof(struct ws_servent);
p_name = p;
strcpy(p, p_se->s_name); p += strlen(p) + 1;
p_proto = p;
strcpy(p, p_se->s_proto); p += strlen(p) + 1;
p_aliases = p;
list_dup(p_se->s_aliases, p, p_base + (p - (char*)p_to), 0);
p_to->s_port = (INT16)p_se->s_port;
p_to->s_name = (SEGPTR)(p_base + (p_name - (char*)p_to));
p_to->s_proto = (SEGPTR)(p_base + (p_proto - (char*)p_to));
p_to->s_aliases = (SEGPTR)(p_base + (p_aliases - (char*)p_to));
return size;
}
static HANDLE __ws_async_handle = 0xdead;
/* Generic async query struct. we use symbolic names for the different queries
* for readability.
*/
typedef struct _async_query {
HWND16 hWnd;
UINT16 uMsg;
LPCSTR ptr1;
#define host_name ptr1
#define host_addr ptr1
#define serv_name ptr1
#define proto_name ptr1
LPCSTR ptr2;
#define serv_proto ptr2
int int1;
#define host_len int1
#define proto_number int1
#define serv_port int1
int int2;
#define host_type int2
SEGPTR sbuf;
INT16 sbuflen;
HANDLE16 async_handle;
int flags;
#define AQ_WIN16 0
#define AQ_WIN32 4
#define HB_WIN32(hb) (hb->flags & AQ_WIN32)
#define AQ_NUMBER 0
#define AQ_NAME 8
#define AQ_GETHOST 0
#define AQ_GETPROTO 1
#define AQ_GETSERV 2
#define AQ_GETMASK 3
int qt;
} async_query;
/****************************************************************************
* The async query function.
*
* It is either called as a thread startup routine or directly. It has
* to free the passed arg from the process heap and PostMessageA the async
* result or the error code.
*
* FIXME:
* - errorhandling not verified.
*/
static DWORD WINAPI _async_queryfun(LPVOID arg) {
async_query *aq = (async_query*)arg;
int size = 0;
WORD fail = 0;
char *targetptr = (HB_WIN32(aq)?(char*)aq->sbuf:(char*)PTR_SEG_TO_LIN(aq->sbuf));
switch (aq->flags & AQ_GETMASK) {
case AQ_GETHOST: {
struct hostent *he;
struct ws_hostent *wshe = (struct ws_hostent*)targetptr;
he = (aq->flags & AQ_NAME) ?
gethostbyname(aq->host_name):
gethostbyaddr(aq->host_addr,aq->host_len,aq->host_type);
if (he) {
size = WS_copy_he(wshe,(char*)aq->sbuf,aq->sbuflen,he);
if (size < 0) {
fail = WSAENOBUFS;
size = -size;
}
} else {
fail = WSAENOBUFS;
}
}
break;
case AQ_GETPROTO: {
struct protoent *pe;
struct ws_protoent *wspe = (struct ws_protoent*)targetptr;
pe = (aq->flags & AQ_NAME)?
getprotobyname(aq->proto_name) :
getprotobynumber(aq->proto_number);
if (pe) {
size = WS_copy_pe(wspe,(char*)aq->sbuf,aq->sbuflen,pe);
if (size < 0) {
fail = WSAENOBUFS;
size = -size;
}
} else {
fail = WSAENOBUFS;
}
}
break;
case AQ_GETSERV: {
struct servent *se;
struct ws_servent *wsse = (struct ws_servent*)targetptr;
se = (aq->flags & AQ_NAME)?
getservbyname(aq->serv_name,aq->serv_proto) :
getservbyport(aq->serv_port,aq->serv_proto);
if (se) {
size = WS_copy_se(wsse,(char*)aq->sbuf,aq->sbuflen,se);
if (size < 0) {
fail = WSAENOBUFS;
size = -size;
}
} else {
fail = WSAENOBUFS;
}
}
break;
}
PostMessageA(aq->hWnd,aq->uMsg,aq->async_handle,size|(fail<<16));
HeapFree(GetProcessHeap(),0,arg);
return 0;
}
/****************************************************************************
* The main async help function.
*
* It either starts a thread or just calls the function directly for platforms
* with no thread support. This relies on the fact that PostMessage() does
* not actually call the windowproc before the function returns.
*/
static HANDLE16 __WSAsyncDBQuery(
HWND hWnd, UINT uMsg,INT int1,LPCSTR ptr1, INT int2, LPCSTR ptr2,
void *sbuf, INT sbuflen, UINT flags
) {
async_query *aq = HeapAlloc(GetProcessHeap(),0,sizeof(async_query));
HANDLE hthread;
aq->hWnd = hWnd;
aq->uMsg = uMsg;
aq->int1 = int1;
aq->ptr1 = ptr1;
aq->int2 = int2;
aq->ptr2 = ptr2;
aq->async_handle = ++__ws_async_handle;
aq->flags = flags;
aq->sbuf = (SEGPTR)sbuf;
aq->sbuflen = sbuflen;
#if 1
hthread = CreateThread(NULL,0,_async_queryfun,aq,0,NULL);
if (hthread==INVALID_HANDLE_VALUE)
#endif
_async_queryfun(aq);
return __ws_async_handle;
}
/***********************************************************************
* WSAAsyncGetHostByAddr() (WINSOCK.102)
*/
HANDLE16 WINAPI WSAAsyncGetHostByAddr16(HWND16 hWnd, UINT16 uMsg, LPCSTR addr,
INT16 len, INT16 type, SEGPTR sbuf, INT16 buflen)
{
TRACE(winsock, "hwnd %04x, msg %04x, addr %08x[%i]\n",
hWnd, uMsg, (unsigned)addr , len );
return __WSAsyncDBQuery(hWnd,uMsg,len,addr,type,NULL,(void*)sbuf,buflen,AQ_NUMBER|AQ_WIN16|AQ_GETHOST);
}
/***********************************************************************
* WSAAsyncGetHostByAddr() (WSOCK32.102)
*/
HANDLE WINAPI WSAAsyncGetHostByAddr(HWND hWnd, UINT uMsg, LPCSTR addr,
INT len, INT type, LPSTR sbuf, INT buflen)
{
TRACE(winsock, "hwnd %04x, msg %04x, addr %08x[%i]\n",
hWnd, uMsg, (unsigned)addr , len );
return __WSAsyncDBQuery(hWnd,uMsg,len,addr,type,NULL,sbuf,buflen,AQ_NUMBER|AQ_WIN32|AQ_GETHOST);
}
/***********************************************************************
* WSAAsyncGetHostByName() (WINSOCK.103)
*/
HANDLE16 WINAPI WSAAsyncGetHostByName16(HWND16 hWnd, UINT16 uMsg, LPCSTR name,
SEGPTR sbuf, INT16 buflen)
{
TRACE(winsock, "hwnd %04x, msg %04x, host %s, buffer %i\n", hWnd, uMsg, (name)?name:"<null>", (int)buflen );
return __WSAsyncDBQuery(hWnd,uMsg,0,name,0,NULL,(void*)sbuf,buflen,AQ_NAME|AQ_WIN16|AQ_GETHOST);
}
/***********************************************************************
* WSAAsyncGetHostByName32() (WSOCK32.103)
*/
HANDLE WINAPI WSAAsyncGetHostByName(HWND hWnd, UINT uMsg, LPCSTR name,
LPSTR sbuf, INT buflen)
{
TRACE(winsock, "hwnd %04x, msg %08x, host %s, buffer %i\n",
(HWND16)hWnd, uMsg, (name)?name:"<null>", (int)buflen );
return __WSAsyncDBQuery(hWnd,uMsg,0,name,0,NULL,sbuf,buflen,AQ_NAME|AQ_WIN32|AQ_GETHOST);
}
/***********************************************************************
* WSAAsyncGetProtoByName() (WINSOCK.105)
*/
HANDLE16 WINAPI WSAAsyncGetProtoByName16(HWND16 hWnd, UINT16 uMsg, LPCSTR name,
SEGPTR sbuf, INT16 buflen)
{
TRACE(winsock, "hwnd %04x, msg %08x, protocol %s\n",
(HWND16)hWnd, uMsg, (name)?name:"<null>" );
return __WSAsyncDBQuery(hWnd,uMsg,0,name,0,NULL,(void*)sbuf,buflen,AQ_GETPROTO|AQ_NAME|AQ_WIN16);
}
/***********************************************************************
* WSAAsyncGetProtoByName() (WSOCK32.105)
*/
HANDLE WINAPI WSAAsyncGetProtoByName(HWND hWnd, UINT uMsg, LPCSTR name,
LPSTR sbuf, INT buflen)
{
TRACE(winsock, "hwnd %04x, msg %08x, protocol %s\n",
(HWND16)hWnd, uMsg, (name)?name:"<null>" );
return __WSAsyncDBQuery(hWnd,uMsg,0,name,0,NULL,sbuf,buflen,AQ_GETPROTO|AQ_NAME|AQ_WIN32);
}
/***********************************************************************
* WSAAsyncGetProtoByNumber() (WINSOCK.104)
*/
HANDLE16 WINAPI WSAAsyncGetProtoByNumber16(HWND16 hWnd,UINT16 uMsg,INT16 number,
SEGPTR sbuf, INT16 buflen)
{
TRACE(winsock, "hwnd %04x, msg %04x, num %i\n", hWnd, uMsg, number );
return __WSAsyncDBQuery(hWnd,uMsg,number,NULL,0,NULL,(void*)sbuf,buflen,AQ_GETPROTO|AQ_NUMBER|AQ_WIN16);
}
/***********************************************************************
* WSAAsyncGetProtoByNumber() (WSOCK32.104)
*/
HANDLE WINAPI WSAAsyncGetProtoByNumber(HWND hWnd, UINT uMsg, INT number,
LPSTR sbuf, INT buflen)
{
TRACE(winsock, "hwnd %04x, msg %04x, num %i\n", hWnd, uMsg, number );
return __WSAsyncDBQuery(hWnd,uMsg,number,NULL,0,NULL,sbuf,buflen,AQ_GETPROTO|AQ_NUMBER|AQ_WIN32);
}
/***********************************************************************
* WSAAsyncGetServByName() (WINSOCK.107)
*/
HANDLE16 WINAPI WSAAsyncGetServByName16(HWND16 hWnd, UINT16 uMsg, LPCSTR name,
LPCSTR proto, SEGPTR sbuf, INT16 buflen)
{
TRACE(winsock, "hwnd %04x, msg %04x, name %s, proto %s\n",
hWnd, uMsg, (name)?name:"<null>", (proto)?proto:"<null>" );
return __WSAsyncDBQuery(hWnd,uMsg,0,name,0,proto,(void*)sbuf,buflen,AQ_GETSERV|AQ_NAME|AQ_WIN16);
}
/***********************************************************************
* WSAAsyncGetServByName() (WSOCK32.107)
*/
HANDLE WINAPI WSAAsyncGetServByName(HWND hWnd, UINT uMsg, LPCSTR name,
LPCSTR proto, LPSTR sbuf, INT buflen)
{
TRACE(winsock, "hwnd %04x, msg %04x, name %s, proto %s\n",
hWnd, uMsg, (name)?name:"<null>", (proto)?proto:"<null>" );
return __WSAsyncDBQuery(hWnd,uMsg,0,name,0,proto,sbuf,buflen,AQ_GETSERV|AQ_NAME|AQ_WIN32);
}
/***********************************************************************
* WSAAsyncGetServByPort() (WINSOCK.106)
*/
HANDLE16 WINAPI WSAAsyncGetServByPort16(HWND16 hWnd, UINT16 uMsg, INT16 port,
LPCSTR proto, SEGPTR sbuf, INT16 buflen)
{
TRACE(winsock, "hwnd %04x, msg %04x, port %i, proto %s\n",
hWnd, uMsg, port, (proto)?proto:"<null>" );
return __WSAsyncDBQuery(hWnd,uMsg,port,NULL,0,proto,(void*)sbuf,buflen,AQ_GETSERV|AQ_NUMBER|AQ_WIN16);
}
/***********************************************************************
* WSAAsyncGetServByPort() (WSOCK32.106)
*/
HANDLE WINAPI WSAAsyncGetServByPort(HWND hWnd, UINT uMsg, INT port,
LPCSTR proto, LPSTR sbuf, INT buflen)
{
TRACE(winsock, "hwnd %04x, msg %04x, port %i, proto %s\n",
hWnd, uMsg, port, (proto)?proto:"<null>" );
return __WSAsyncDBQuery(hWnd,uMsg,port,NULL,0,proto,sbuf,buflen,AQ_GETSERV|AQ_NUMBER|AQ_WIN32);
}
/***********************************************************************
* WSACancelAsyncRequest() (WINSOCK.108)(WSOCK32.109)
*/
INT WINAPI WSACancelAsyncRequest(HANDLE hAsyncTaskHandle)
{
FIXME(winsock, "(%08x),stub\n", hAsyncTaskHandle);
return 0;
}
INT16 WINAPI WSACancelAsyncRequest16(HANDLE16 hAsyncTaskHandle)
{
return (HANDLE16)WSACancelAsyncRequest((HANDLE)hAsyncTaskHandle);
}
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