462 lines
14 KiB
C
462 lines
14 KiB
C
/* Async WINSOCK DNS services
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*
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* Copyright (C) 1993,1994,1996,1997 John Brezak, Erik Bos, Alex Korobka.
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* Copyright (C) 1999 Marcus Meissner
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* Copyright (C) 2009 Alexandre Julliard
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*
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* NOTE: If you make any changes to fix a particular app, make sure
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* they don't break something else like Netscape or telnet and ftp
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* clients and servers (www.winsite.com got a lot of those).
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*
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* FIXME:
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* - Add WSACancel* and correct handle management. (works rather well for
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* now without it.)
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* - Verify & Check all calls for correctness
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* (currently only WSAGetHostByName*, WSAGetServByPort* calls)
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* - Check error returns.
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* - mirc/mirc32 Finger @linux.kernel.org sometimes fails in threaded mode.
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* (not sure why)
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* - This implementation did ignore the "NOTE:" section above (since the
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* whole stuff did not work anyway to other changes).
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*/
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#include "ws2_32_private.h"
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WINE_DEFAULT_DEBUG_CHANNEL(winsock);
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struct async_query_header
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{
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LPARAM (*func)( struct async_query_header *query );
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HWND hWnd;
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UINT uMsg;
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void *sbuf;
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INT sbuflen;
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HANDLE handle;
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};
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struct async_query_gethostbyname
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{
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struct async_query_header query;
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char *host_name;
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};
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struct async_query_gethostbyaddr
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{
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struct async_query_header query;
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char *host_addr;
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int host_len;
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int host_type;
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};
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struct async_query_getprotobyname
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{
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struct async_query_header query;
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char *proto_name;
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};
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struct async_query_getprotobynumber
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{
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struct async_query_header query;
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int proto_number;
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};
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struct async_query_getservbyname
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{
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struct async_query_header query;
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char *serv_name;
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char *serv_proto;
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};
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struct async_query_getservbyport
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{
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struct async_query_header query;
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char *serv_proto;
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int serv_port;
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};
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/* ----------------------------------- helper functions - */
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static int list_size(char** l, int item_size)
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{
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int i,j = 0;
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if(l)
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{ for(i=0;l[i];i++)
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j += (item_size) ? item_size : strlen(l[i]) + 1;
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j += (i + 1) * sizeof(char*); }
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return j;
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}
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static int list_dup(char** l_src, char* ref, int item_size)
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{
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char* p = ref;
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char** l_to = (char**)ref;
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int i,j,k;
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for(j=0;l_src[j];j++) ;
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p += (j + 1) * sizeof(char*);
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for(i=0;i<j;i++)
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{ l_to[i] = p;
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k = ( item_size ) ? item_size : strlen(l_src[i]) + 1;
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memcpy(p, l_src[i], k); p += k; }
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l_to[i] = NULL;
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return (p - ref);
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}
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/* ----- hostent */
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static LPARAM copy_he(void *base, int size, const struct hostent *he)
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{
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char *p;
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int needed;
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struct hostent *to = base;
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if (!he) return MAKELPARAM( 0, GetLastError() );
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needed = sizeof(struct hostent) + strlen(he->h_name) + 1 +
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list_size(he->h_aliases, 0) +
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list_size(he->h_addr_list, he->h_length );
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if (size < needed) return MAKELPARAM( needed, WSAENOBUFS );
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to->h_addrtype = he->h_addrtype;
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to->h_length = he->h_length;
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p = (char *)(to + 1);
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to->h_name = p;
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strcpy(p, he->h_name); p += strlen(p) + 1;
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to->h_aliases = (char **)p;
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p += list_dup(he->h_aliases, p, 0);
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to->h_addr_list = (char **)p;
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list_dup(he->h_addr_list, p, he->h_length);
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return MAKELPARAM( needed, 0 );
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}
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static LPARAM async_gethostbyname( struct async_query_header *query )
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{
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struct async_query_gethostbyname *aq = CONTAINING_RECORD( query, struct async_query_gethostbyname, query );
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struct hostent *he = gethostbyname( aq->host_name );
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return copy_he( query->sbuf, query->sbuflen, he );
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}
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static LPARAM async_gethostbyaddr( struct async_query_header *query )
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{
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struct async_query_gethostbyaddr *aq = CONTAINING_RECORD( query, struct async_query_gethostbyaddr, query );
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struct hostent *he = gethostbyaddr( aq->host_addr, aq->host_len, aq->host_type );
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return copy_he( query->sbuf, query->sbuflen, he );
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}
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/* ----- protoent */
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static LPARAM copy_pe( void *base, int size, const struct protoent *pe )
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{
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char *p;
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int needed;
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struct protoent *to = base;
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if (!pe) return MAKELPARAM( 0, GetLastError() );
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needed = sizeof(struct protoent) + strlen( pe->p_name ) + 1 + list_size( pe->p_aliases, 0 );
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if (size < needed) return MAKELPARAM( needed, WSAENOBUFS );
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to->p_proto = pe->p_proto;
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p = (char *)(to + 1);
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to->p_name = p;
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strcpy(p, pe->p_name); p += strlen(p) + 1;
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to->p_aliases = (char **)p;
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list_dup(pe->p_aliases, p, 0);
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return MAKELPARAM( needed, 0 );
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}
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static LPARAM async_getprotobyname( struct async_query_header *query )
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{
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struct async_query_getprotobyname *aq = CONTAINING_RECORD( query, struct async_query_getprotobyname, query );
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struct protoent *pe = getprotobyname( aq->proto_name );
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return copy_pe( query->sbuf, query->sbuflen, pe );
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}
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static LPARAM async_getprotobynumber( struct async_query_header *query )
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{
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struct async_query_getprotobynumber *aq = CONTAINING_RECORD( query, struct async_query_getprotobynumber, query );
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struct protoent *pe = getprotobynumber( aq->proto_number );
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return copy_pe( query->sbuf, query->sbuflen, pe );
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}
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/* ----- servent */
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static LPARAM copy_se( void *base, int size, const struct servent *se )
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{
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char *p;
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int needed;
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struct servent *to = base;
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if (!se) return MAKELPARAM( 0, GetLastError() );
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needed = sizeof(struct servent) + strlen( se->s_proto ) + strlen( se->s_name ) + 2 + list_size( se->s_aliases, 0 );
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if (size < needed) return MAKELPARAM( needed, WSAENOBUFS );
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to->s_port = se->s_port;
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p = (char *)(to + 1);
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to->s_name = p;
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strcpy(p, se->s_name); p += strlen(p) + 1;
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to->s_proto = p;
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strcpy(p, se->s_proto); p += strlen(p) + 1;
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to->s_aliases = (char **)p;
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list_dup(se->s_aliases, p, 0);
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return MAKELPARAM( needed, 0 );
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}
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static LPARAM async_getservbyname( struct async_query_header *query )
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{
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struct async_query_getservbyname *aq = CONTAINING_RECORD( query, struct async_query_getservbyname, query );
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struct servent *se = getservbyname( aq->serv_name, aq->serv_proto );
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return copy_se( query->sbuf, query->sbuflen, se );
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}
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static LPARAM async_getservbyport( struct async_query_header *query )
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{
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struct async_query_getservbyport *aq = CONTAINING_RECORD( query, struct async_query_getservbyport, query );
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struct servent *se = getservbyport( aq->serv_port, aq->serv_proto );
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return copy_se( query->sbuf, query->sbuflen, se );
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}
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static void WINAPI async_worker( TP_CALLBACK_INSTANCE *instance, void *context )
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{
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struct async_query_header *query = context;
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LPARAM lparam = query->func( query );
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PostMessageW( query->hWnd, query->uMsg, (WPARAM)query->handle, lparam );
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free( query );
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}
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/****************************************************************************
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* The main async help function.
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*
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* It either starts a thread or just calls the function directly for platforms
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* with no thread support. This relies on the fact that PostMessage() does
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* not actually call the windowproc before the function returns.
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*/
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static HANDLE run_query( HWND hWnd, UINT uMsg, LPARAM (*func)(struct async_query_header *),
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struct async_query_header *query, void *sbuf, INT sbuflen )
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{
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static LONG next_handle = 0xdead;
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ULONG handle;
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do
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handle = LOWORD( InterlockedIncrement( &next_handle ));
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while (!handle); /* avoid handle 0 */
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query->func = func;
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query->hWnd = hWnd;
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query->uMsg = uMsg;
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query->handle = UlongToHandle( handle );
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query->sbuf = sbuf;
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query->sbuflen = sbuflen;
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if (!TrySubmitThreadpoolCallback( async_worker, query, NULL ))
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{
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SetLastError( WSAEWOULDBLOCK );
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free( query );
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return 0;
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}
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return UlongToHandle( handle );
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}
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/***********************************************************************
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* WSAAsyncGetHostByAddr (WS2_32.102)
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*/
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HANDLE WINAPI WSAAsyncGetHostByAddr(HWND hWnd, UINT uMsg, LPCSTR addr,
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INT len, INT type, LPSTR sbuf, INT buflen)
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{
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struct async_query_gethostbyaddr *aq;
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TRACE("hwnd %p, msg %04x, addr %p[%i]\n", hWnd, uMsg, addr, len );
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if (!(aq = malloc( sizeof(*aq) + len )))
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{
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SetLastError( WSAEWOULDBLOCK );
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return 0;
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}
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aq->host_addr = (char *)(aq + 1);
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aq->host_len = len;
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aq->host_type = type;
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memcpy( aq->host_addr, addr, len );
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return run_query( hWnd, uMsg, async_gethostbyaddr, &aq->query, sbuf, buflen );
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}
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/***********************************************************************
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* WSAAsyncGetHostByName (WS2_32.103)
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*/
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HANDLE WINAPI WSAAsyncGetHostByName(HWND hWnd, UINT uMsg, LPCSTR name,
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LPSTR sbuf, INT buflen)
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{
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struct async_query_gethostbyname *aq;
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unsigned int len = strlen(name) + 1;
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TRACE("hwnd %p, msg %04x, host %s, buffer %i\n", hWnd, uMsg, debugstr_a(name), buflen );
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if (!(aq = malloc( sizeof(*aq) + len )))
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{
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SetLastError( WSAEWOULDBLOCK );
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return 0;
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}
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aq->host_name = (char *)(aq + 1);
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strcpy( aq->host_name, name );
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return run_query( hWnd, uMsg, async_gethostbyname, &aq->query, sbuf, buflen );
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}
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/***********************************************************************
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* WSAAsyncGetProtoByName (WS2_32.105)
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*/
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HANDLE WINAPI WSAAsyncGetProtoByName(HWND hWnd, UINT uMsg, LPCSTR name,
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LPSTR sbuf, INT buflen)
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{
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struct async_query_getprotobyname *aq;
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unsigned int len = strlen(name) + 1;
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TRACE("hwnd %p, msg %04x, proto %s, buffer %i\n", hWnd, uMsg, debugstr_a(name), buflen );
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if (!(aq = malloc( sizeof(*aq) + len )))
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{
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SetLastError( WSAEWOULDBLOCK );
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return 0;
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}
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aq->proto_name = (char *)(aq + 1);
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strcpy( aq->proto_name, name );
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return run_query( hWnd, uMsg, async_getprotobyname, &aq->query, sbuf, buflen );
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}
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/***********************************************************************
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* WSAAsyncGetProtoByNumber (WS2_32.104)
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*/
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HANDLE WINAPI WSAAsyncGetProtoByNumber(HWND hWnd, UINT uMsg, INT number,
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LPSTR sbuf, INT buflen)
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{
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struct async_query_getprotobynumber *aq;
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TRACE("hwnd %p, msg %04x, num %i\n", hWnd, uMsg, number );
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if (!(aq = malloc( sizeof(*aq) )))
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{
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SetLastError( WSAEWOULDBLOCK );
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return 0;
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}
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aq->proto_number = number;
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return run_query( hWnd, uMsg, async_getprotobynumber, &aq->query, sbuf, buflen );
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}
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/***********************************************************************
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* WSAAsyncGetServByName (WS2_32.107)
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*/
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HANDLE WINAPI WSAAsyncGetServByName(HWND hWnd, UINT uMsg, LPCSTR name,
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LPCSTR proto, LPSTR sbuf, INT buflen)
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{
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struct async_query_getservbyname *aq;
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unsigned int len1 = strlen(name) + 1;
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unsigned int len2 = proto ? strlen(proto) + 1 : 0;
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TRACE("hwnd %p, msg %04x, name %s, proto %s\n", hWnd, uMsg, debugstr_a(name), debugstr_a(proto));
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if (!(aq = malloc( sizeof(*aq) + len1 + len2 )))
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{
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SetLastError( WSAEWOULDBLOCK );
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return 0;
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}
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aq->serv_name = (char *)(aq + 1);
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strcpy( aq->serv_name, name );
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if (proto)
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{
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aq->serv_proto = aq->serv_name + len1;
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strcpy( aq->serv_proto, proto );
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}
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else
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aq->serv_proto = NULL;
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return run_query( hWnd, uMsg, async_getservbyname, &aq->query, sbuf, buflen );
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}
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/***********************************************************************
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* WSAAsyncGetServByPort (WS2_32.106)
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*/
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HANDLE WINAPI WSAAsyncGetServByPort(HWND hWnd, UINT uMsg, INT port,
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LPCSTR proto, LPSTR sbuf, INT buflen)
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{
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struct async_query_getservbyport *aq;
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unsigned int len = proto ? strlen(proto) + 1 : 0;
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TRACE("hwnd %p, msg %04x, port %i, proto %s\n", hWnd, uMsg, port, debugstr_a(proto));
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if (!(aq = malloc( sizeof(*aq) + len )))
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{
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SetLastError( WSAEWOULDBLOCK );
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return 0;
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}
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if (proto)
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{
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aq->serv_proto = (char *)(aq + 1);
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strcpy( aq->serv_proto, proto );
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}
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else
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aq->serv_proto = NULL;
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aq->serv_port = port;
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return run_query( hWnd, uMsg, async_getservbyport, &aq->query, sbuf, buflen );
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}
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/***********************************************************************
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* WSACancelAsyncRequest (WS2_32.108)
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*/
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INT WINAPI WSACancelAsyncRequest(HANDLE hAsyncTaskHandle)
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{
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FIXME("(%p),stub\n", hAsyncTaskHandle);
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return 0;
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}
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/***********************************************************************
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* WSApSetPostRoutine (WS2_32.24)
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*/
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INT WINAPI WSApSetPostRoutine(LPWPUPOSTMESSAGE lpPostRoutine)
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{
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FIXME("(%p), stub !\n", lpPostRoutine);
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return 0;
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}
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/***********************************************************************
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* WPUCompleteOverlappedRequest (WS2_32.25)
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*/
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WSAEVENT WINAPI WPUCompleteOverlappedRequest(SOCKET s, LPWSAOVERLAPPED overlapped,
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DWORD error, DWORD transferred, LPINT errcode)
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{
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FIXME("(0x%08lx,%p,0x%08x,0x%08x,%p), stub !\n", s, overlapped, error, transferred, errcode);
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if (errcode)
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*errcode = WSAEINVAL;
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return NULL;
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}
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