1 /* Async WINSOCK DNS services
3 * Copyright (C) 1993,1994,1996,1997 John Brezak, Erik Bos, Alex Korobka.
4 * Copyright (C) 1999 Marcus Meissner
5 * Copyright (C) 2009 Alexandre Julliard
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this library; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
21 * NOTE: If you make any changes to fix a particular app, make sure
22 * they don't break something else like Netscape or telnet and ftp
23 * clients and servers (www.winsite.com got a lot of those).
26 * - Add WSACancel* and correct handle management. (works rather well for
28 * - Verify & Check all calls for correctness
29 * (currently only WSAGetHostByName*, WSAGetServByPort* calls)
30 * - Check error returns.
31 * - mirc/mirc32 Finger @linux.kernel.org sometimes fails in threaded mode.
33 * - This implementation did ignore the "NOTE:" section above (since the
34 * whole stuff did not work anyway to other changes).
38 #include "wine/port.h"
48 #include "wine/debug.h"
50 WINE_DEFAULT_DEBUG_CHANNEL(winsock);
53 struct async_query_header
62 struct async_query_gethostbyname
64 struct async_query_header query;
68 struct async_query_gethostbyaddr
70 struct async_query_header query;
76 struct async_query_getprotobyname
78 struct async_query_header query;
82 struct async_query_getprotobynumber
84 struct async_query_header query;
88 struct async_query_getservbyname
90 struct async_query_header query;
95 struct async_query_getservbyport
97 struct async_query_header query;
103 /* ----------------------------------- helper functions - */
105 static int list_size(char** l, int item_size)
110 j += (item_size) ? item_size : strlen(l[i]) + 1;
111 j += (i + 1) * sizeof(char*); }
115 static int list_dup(char** l_src, char* ref, int item_size)
118 char** l_to = (char**)ref;
121 for(j=0;l_src[j];j++) ;
122 p += (j + 1) * sizeof(char*);
125 k = ( item_size ) ? item_size : strlen(l_src[i]) + 1;
126 memcpy(p, l_src[i], k); p += k; }
131 static DWORD finish_query( struct async_query_header *query, LPARAM lparam )
133 PostMessageW( query->hWnd, query->uMsg, (WPARAM)query->handle, lparam );
134 HeapFree( GetProcessHeap(), 0, query );
140 static LPARAM copy_he(void *base, int size, const struct WS_hostent *he)
144 struct WS_hostent *to = base;
146 if (!he) return MAKELPARAM( 0, GetLastError() );
148 needed = sizeof(struct WS_hostent) + strlen(he->h_name) + 1 +
149 list_size(he->h_aliases, 0) +
150 list_size(he->h_addr_list, he->h_length );
151 if (size < needed) return MAKELPARAM( needed, WSAENOBUFS );
153 to->h_addrtype = he->h_addrtype;
154 to->h_length = he->h_length;
155 p = (char *)(to + 1);
157 strcpy(p, he->h_name); p += strlen(p) + 1;
158 to->h_aliases = (char **)p;
159 p += list_dup(he->h_aliases, p, 0);
160 to->h_addr_list = (char **)p;
161 list_dup(he->h_addr_list, p, he->h_length);
162 return MAKELPARAM( needed, 0 );
165 static DWORD WINAPI async_gethostbyname(LPVOID arg)
167 struct async_query_gethostbyname *aq = arg;
168 struct WS_hostent *he = WS_gethostbyname( aq->host_name );
170 return finish_query( &aq->query, copy_he( aq->query.sbuf, aq->query.sbuflen, he ));
173 static DWORD WINAPI async_gethostbyaddr(LPVOID arg)
175 struct async_query_gethostbyaddr *aq = arg;
176 struct WS_hostent *he = WS_gethostbyaddr( aq->host_addr, aq->host_len, aq->host_type );
178 return finish_query( &aq->query, copy_he( aq->query.sbuf, aq->query.sbuflen, he ));
183 static LPARAM copy_pe(void *base, int size, const struct WS_protoent* pe)
187 struct WS_protoent *to = base;
189 if (!pe) return MAKELPARAM( 0, GetLastError() );
191 needed = sizeof(struct WS_protoent) + strlen(pe->p_name) + 1 + list_size(pe->p_aliases, 0);
192 if (size < needed) return MAKELPARAM( needed, WSAENOBUFS );
194 to->p_proto = pe->p_proto;
195 p = (char *)(to + 1);
197 strcpy(p, pe->p_name); p += strlen(p) + 1;
198 to->p_aliases = (char **)p;
199 list_dup(pe->p_aliases, p, 0);
200 return MAKELPARAM( needed, 0 );
203 static DWORD WINAPI async_getprotobyname(LPVOID arg)
205 struct async_query_getprotobyname *aq = arg;
206 struct WS_protoent *pe = WS_getprotobyname( aq->proto_name );
208 return finish_query( &aq->query, copy_pe( aq->query.sbuf, aq->query.sbuflen, pe ));
211 static DWORD WINAPI async_getprotobynumber(LPVOID arg)
213 struct async_query_getprotobynumber *aq = arg;
214 struct WS_protoent *pe = WS_getprotobynumber( aq->proto_number );
216 return finish_query( &aq->query, copy_pe( aq->query.sbuf, aq->query.sbuflen, pe ));
221 static LPARAM copy_se(void *base, int size, const struct WS_servent* se)
225 struct WS_servent *to = base;
227 if (!se) return MAKELPARAM( 0, GetLastError() );
229 needed = sizeof(struct WS_servent) + strlen(se->s_proto) + strlen(se->s_name) + 2 + list_size(se->s_aliases, 0);
230 if (size < needed) return MAKELPARAM( needed, WSAENOBUFS );
232 to->s_port = se->s_port;
233 p = (char *)(to + 1);
235 strcpy(p, se->s_name); p += strlen(p) + 1;
237 strcpy(p, se->s_proto); p += strlen(p) + 1;
238 to->s_aliases = (char **)p;
239 list_dup(se->s_aliases, p, 0);
240 return MAKELPARAM( needed, 0 );
243 static DWORD WINAPI async_getservbyname(LPVOID arg)
245 struct async_query_getservbyname *aq = arg;
246 struct WS_servent *se = WS_getservbyname( aq->serv_name, aq->serv_proto );
248 return finish_query( &aq->query, copy_se( aq->query.sbuf, aq->query.sbuflen, se ));
251 static DWORD WINAPI async_getservbyport(LPVOID arg)
253 struct async_query_getservbyport *aq = arg;
254 struct WS_servent *se = WS_getservbyport( aq->serv_port, aq->serv_proto );
256 return finish_query( &aq->query, copy_se( aq->query.sbuf, aq->query.sbuflen, se ));
260 /****************************************************************************
261 * The main async help function.
263 * It either starts a thread or just calls the function directly for platforms
264 * with no thread support. This relies on the fact that PostMessage() does
265 * not actually call the windowproc before the function returns.
267 static HANDLE run_query( HWND hWnd, UINT uMsg, LPTHREAD_START_ROUTINE func,
268 struct async_query_header *query, void *sbuf, INT sbuflen )
270 static LONG next_handle = 0xdead;
272 ULONG handle = LOWORD( InterlockedIncrement( &next_handle ));
275 while (!handle) handle = LOWORD( InterlockedIncrement( &next_handle ));
279 query->handle = UlongToHandle( handle );
281 query->sbuflen = sbuflen;
283 thread = CreateThread( NULL, 0, func, query, 0, NULL );
286 SetLastError( WSAEWOULDBLOCK );
287 HeapFree( GetProcessHeap(), 0, query );
290 CloseHandle( thread );
291 return UlongToHandle( handle );
295 /***********************************************************************
296 * WSAAsyncGetHostByAddr (WS2_32.102)
298 HANDLE WINAPI WSAAsyncGetHostByAddr(HWND hWnd, UINT uMsg, LPCSTR addr,
299 INT len, INT type, LPSTR sbuf, INT buflen)
301 struct async_query_gethostbyaddr *aq;
303 TRACE("hwnd %p, msg %04x, addr %p[%i]\n", hWnd, uMsg, addr, len );
305 if (!(aq = HeapAlloc( GetProcessHeap(), 0, sizeof(*aq) + len )))
307 SetLastError( WSAEWOULDBLOCK );
310 aq->host_addr = (char *)(aq + 1);
312 aq->host_type = type;
313 memcpy( aq->host_addr, addr, len );
314 return run_query( hWnd, uMsg, async_gethostbyaddr, &aq->query, sbuf, buflen );
317 /***********************************************************************
318 * WSAAsyncGetHostByName (WS2_32.103)
320 HANDLE WINAPI WSAAsyncGetHostByName(HWND hWnd, UINT uMsg, LPCSTR name,
321 LPSTR sbuf, INT buflen)
323 struct async_query_gethostbyname *aq;
324 unsigned int len = strlen(name) + 1;
326 TRACE("hwnd %p, msg %04x, host %s, buffer %i\n", hWnd, uMsg, debugstr_a(name), buflen );
328 if (!(aq = HeapAlloc( GetProcessHeap(), 0, sizeof(*aq) + len )))
330 SetLastError( WSAEWOULDBLOCK );
333 aq->host_name = (char *)(aq + 1);
334 strcpy( aq->host_name, name );
335 return run_query( hWnd, uMsg, async_gethostbyname, &aq->query, sbuf, buflen );
338 /***********************************************************************
339 * WSAAsyncGetProtoByName (WS2_32.105)
341 HANDLE WINAPI WSAAsyncGetProtoByName(HWND hWnd, UINT uMsg, LPCSTR name,
342 LPSTR sbuf, INT buflen)
344 struct async_query_getprotobyname *aq;
345 unsigned int len = strlen(name) + 1;
347 TRACE("hwnd %p, msg %04x, proto %s, buffer %i\n", hWnd, uMsg, debugstr_a(name), buflen );
349 if (!(aq = HeapAlloc( GetProcessHeap(), 0, sizeof(*aq) + len )))
351 SetLastError( WSAEWOULDBLOCK );
354 aq->proto_name = (char *)(aq + 1);
355 strcpy( aq->proto_name, name );
356 return run_query( hWnd, uMsg, async_getprotobyname, &aq->query, sbuf, buflen );
360 /***********************************************************************
361 * WSAAsyncGetProtoByNumber (WS2_32.104)
363 HANDLE WINAPI WSAAsyncGetProtoByNumber(HWND hWnd, UINT uMsg, INT number,
364 LPSTR sbuf, INT buflen)
366 struct async_query_getprotobynumber *aq;
368 TRACE("hwnd %p, msg %04x, num %i\n", hWnd, uMsg, number );
370 if (!(aq = HeapAlloc( GetProcessHeap(), 0, sizeof(*aq) )))
372 SetLastError( WSAEWOULDBLOCK );
375 aq->proto_number = number;
376 return run_query( hWnd, uMsg, async_getprotobynumber, &aq->query, sbuf, buflen );
379 /***********************************************************************
380 * WSAAsyncGetServByName (WS2_32.107)
382 HANDLE WINAPI WSAAsyncGetServByName(HWND hWnd, UINT uMsg, LPCSTR name,
383 LPCSTR proto, LPSTR sbuf, INT buflen)
385 struct async_query_getservbyname *aq;
386 unsigned int len1 = strlen(name) + 1;
387 unsigned int len2 = strlen(proto) + 1;
389 TRACE("hwnd %p, msg %04x, name %s, proto %s\n", hWnd, uMsg, debugstr_a(name), debugstr_a(proto));
391 if (!(aq = HeapAlloc( GetProcessHeap(), 0, sizeof(*aq) + len1 + len2 )))
393 SetLastError( WSAEWOULDBLOCK );
396 aq->serv_name = (char *)(aq + 1);
397 aq->serv_proto = aq->serv_name + len1;
398 strcpy( aq->serv_name, name );
399 strcpy( aq->serv_proto, proto );
400 return run_query( hWnd, uMsg, async_getservbyname, &aq->query, sbuf, buflen );
403 /***********************************************************************
404 * WSAAsyncGetServByPort (WS2_32.106)
406 HANDLE WINAPI WSAAsyncGetServByPort(HWND hWnd, UINT uMsg, INT port,
407 LPCSTR proto, LPSTR sbuf, INT buflen)
409 struct async_query_getservbyport *aq;
410 unsigned int len = proto ? strlen(proto) + 1 : 0;
412 TRACE("hwnd %p, msg %04x, port %i, proto %s\n", hWnd, uMsg, port, debugstr_a(proto));
414 if (!(aq = HeapAlloc( GetProcessHeap(), 0, sizeof(*aq) + len )))
416 SetLastError( WSAEWOULDBLOCK );
422 aq->serv_proto = (char *)(aq + 1);
423 strcpy( aq->serv_proto, proto );
426 aq->serv_proto = NULL;
428 aq->serv_port = port;
430 return run_query( hWnd, uMsg, async_getservbyport, &aq->query, sbuf, buflen );
433 /***********************************************************************
434 * WSACancelAsyncRequest (WS2_32.108)
436 INT WINAPI WSACancelAsyncRequest(HANDLE hAsyncTaskHandle)
438 FIXME("(%p),stub\n", hAsyncTaskHandle);
442 /***********************************************************************
443 * WSApSetPostRoutine (WS2_32.24)
445 INT WINAPI WSApSetPostRoutine(LPWPUPOSTMESSAGE lpPostRoutine)
447 FIXME("(%p), stub !\n", lpPostRoutine);
451 /***********************************************************************
452 * WPUCompleteOverlappedRequest (WS2_32.25)
454 WSAEVENT WINAPI WPUCompleteOverlappedRequest(SOCKET s, LPWSAOVERLAPPED overlapped,
455 DWORD error, DWORD transferred, LPINT errcode)
457 FIXME("(0x%08lx,%p,0x%08x,0x%08x,%p), stub !\n", s, overlapped, error, transferred, errcode);
460 *errcode = WSAEINVAL;