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/* Copyright (c) 2003 Juan Lang
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*
* I am heavily indebted to Chris Hertel's excellent Implementing CIFS,
* http://ubiqx.org/cifs/ , for whatever understanding I have of NBT.
* I also stole from Mike McCormack's smb.c and netapi32.c, although little of
* that code remains.
* Lack of understanding and bugs are my fault.
*
* FIXME:
* - Of the NetBIOS session functions, only client functions are supported, and
* it's likely they'll be the only functions supported. NBT requires session
* servers to listen on TCP/139. This requires root privilege, and Samba is
* likely to be listening here already. This further restricts NetBIOS
* applications, both explicit users and implicit ones: CreateNamedPipe
* won't actually create a listening pipe, for example, so applications can't
* act as RPC servers using a named pipe protocol binding, DCOM won't be able
* to support callbacks or servers over the named pipe protocol, etc.
*
* - Datagram support is omitted for the same reason. To send a NetBIOS
* datagram, you must include the NetBIOS name by which your application is
* known. This requires you to have registered the name previously, and be
* able to act as a NetBIOS datagram server (listening on UDP/138).
*
* - Name registration functions are omitted for the same reason--registering a
* name requires you to be able to defend it, and this means listening on
* UDP/137.
* Win98 requires you either use your computer's NetBIOS name (with the NULL
* suffix byte) as the calling name when creating a session, or to register
* a new name before creating one: it disallows '*' as the calling name.
* Win2K initially starts with an empty name table, and doesn't allow you to
* use the machine's NetBIOS name (with the NULL suffix byte) as the calling
* name. Although it allows sessions to be created with '*' as the calling
* name, doing so results in timeouts for all receives, because the
* application never gets them.
* So, a well-behaved NetBIOS application will typically want to register a
* name. I should probably support a do-nothing name list that allows
* NCBADDNAME to add to it, but doesn't actually register the name, or does
* attempt to register it without being able to defend it.
*
* - Name lookups may not behave quite as you'd expect/like if you have
* multiple LANAs. If a name is resolvable through DNS, or if you're using
* WINS, it'll resolve on _any_ LANA. So, a Call will succeed on any LANA as
* well.
* I'm not sure how Windows behaves in this case. I could try to force
* lookups to the correct adapter by using one of the GetPreferred*
* functions, but with the possibility of multiple adapters in the same
* same subnet, there's no guarantee that what IpHlpApi thinks is the
* preferred adapter will actually be a LANA. (It's highly probable because
* this is an unusual configuration, but not guaranteed.)
*
* See also other FIXMEs in the code.
*/
#include "config.h"
#include <stdarg.h>
#include "winsock2.h"
#include "windef.h"
#include "winbase.h"
#include "wine/debug.h"
#include "winreg.h"
#include "iphlpapi.h"
#include "netbios.h"
#include "nbnamecache.h"
WINE_DEFAULT_DEBUG_CHANNEL(netbios);
#define PORT_NBNS 137
#define PORT_NBDG 138
#define PORT_NBSS 139
#ifndef INADDR_NONE
#define INADDR_NONE ~0UL
#endif
#define NBR_ADDWORD(p,word) (*(WORD *)(p)) = htons(word)
#define NBR_GETWORD(p) ntohs(*(WORD *)(p))
#define MIN_QUERIES 1
#define MAX_QUERIES 0xffff
#define MIN_QUERY_TIMEOUT 100
#define MAX_QUERY_TIMEOUT 0xffffffff
#define BCAST_QUERIES 3
#define BCAST_QUERY_TIMEOUT 750
#define WINS_QUERIES 3
#define WINS_QUERY_TIMEOUT 750
#define MAX_WINS_SERVERS 2
#define MIN_CACHE_TIMEOUT 60000
#define CACHE_TIMEOUT 360000
#define MAX_NBT_NAME_SZ 255
#define SIMPLE_NAME_QUERY_PKT_SIZE 16 + MAX_NBT_NAME_SZ
#define NBNS_TYPE_NB 0x0020
#define NBNS_TYPE_NBSTAT 0x0021
#define NBNS_CLASS_INTERNET 0x00001
#define NBNS_HEADER_SIZE (sizeof(WORD) * 6)
#define NBNS_RESPONSE_AND_OPCODE 0xf800
#define NBNS_RESPONSE_AND_QUERY 0x8000
#define NBNS_REPLYCODE 0x0f
#define NBSS_HDRSIZE 4
#define NBSS_MSG 0x00
#define NBSS_REQ 0x81
#define NBSS_ACK 0x82
#define NBSS_NACK 0x83
#define NBSS_RETARGET 0x84
#define NBSS_KEEPALIVE 0x85
#define NBSS_ERR_NOT_LISTENING_ON_NAME 0x80
#define NBSS_ERR_NOT_LISTENING_FOR_CALLER 0x81
#define NBSS_ERR_BAD_NAME 0x82
#define NBSS_ERR_INSUFFICIENT_RESOURCES 0x83
#define NBSS_EXTENSION 0x01
typedef struct _NetBTSession
{
CRITICAL_SECTION cs;
SOCKET fd;
DWORD bytesPending;
} NetBTSession;
typedef struct _NetBTAdapter
{
MIB_IPADDRROW ipr;
WORD nameQueryXID;
struct NBNameCache *nameCache;
DWORD xmit_success;
DWORD recv_success;
} NetBTAdapter;
static ULONG gTransportID;
static BOOL gEnableDNS;
static DWORD gBCastQueries;
static DWORD gBCastQueryTimeout;
static DWORD gWINSQueries;
static DWORD gWINSQueryTimeout;
static DWORD gWINSServers[MAX_WINS_SERVERS];
static int gNumWINSServers;
static char gScopeID[MAX_SCOPE_ID_LEN];
static DWORD gCacheTimeout;
static struct NBNameCache *gNameCache;
/* Converts from a NetBIOS name into a Second Level Encoding-formatted name.
* Assumes p is not NULL and is either NULL terminated or has at most NCBNAMSZ
* bytes, and buffer has at least MAX_NBT_NAME_SZ bytes. Pads with space bytes
* if p is NULL-terminated. Returns the number of bytes stored in buffer.
*/
static int NetBTNameEncode(const UCHAR *p, UCHAR *buffer)
{
int i,len=0;
if (!p) return 0;
if (!buffer) return 0;
buffer[len++] = NCBNAMSZ * 2;
for (i = 0; i < NCBNAMSZ && p[i]; i++)
{
buffer[len++] = ((p[i] & 0xf0) >> 4) + 'A';
buffer[len++] = (p[i] & 0x0f) + 'A';
}
while (len < NCBNAMSZ * 2)
{
buffer[len++] = 'C';
buffer[len++] = 'A';
}
if (*gScopeID)
{
int scopeIDLen = strlen(gScopeID);
memcpy(buffer + len, gScopeID, scopeIDLen);
len += scopeIDLen;
}
buffer[len++] = 0; /* add second terminator */
return len;
}
/* Creates a NBT name request packet for name in buffer. If broadcast is true,
* creates a broadcast request, otherwise creates a unicast request.
* Returns the number of bytes stored in buffer.
*/
static DWORD NetBTNameReq(const UCHAR name[NCBNAMSZ], WORD xid, WORD qtype,
BOOL broadcast, UCHAR *buffer, int len)
{
int i = 0;
if (len < SIMPLE_NAME_QUERY_PKT_SIZE) return 0;
NBR_ADDWORD(&buffer[i],xid); i+=2; /* transaction */
if (broadcast)
{
NBR_ADDWORD(&buffer[i],0x0110); /* flags: r=req,op=query,rd=1,b=1 */
i+=2;
}
else
{
NBR_ADDWORD(&buffer[i],0x0100); /* flags: r=req,op=query,rd=1,b=0 */
i+=2;
}
NBR_ADDWORD(&buffer[i],0x0001); i+=2; /* one name query */
NBR_ADDWORD(&buffer[i],0x0000); i+=2; /* zero answers */
NBR_ADDWORD(&buffer[i],0x0000); i+=2; /* zero authorities */
NBR_ADDWORD(&buffer[i],0x0000); i+=2; /* zero additional */
i += NetBTNameEncode(name, &buffer[i]);
NBR_ADDWORD(&buffer[i],qtype); i+=2;
NBR_ADDWORD(&buffer[i],NBNS_CLASS_INTERNET); i+=2;
return i;
}
/* Sends a name query request for name on fd to destAddr. Sets SO_BROADCAST on
* fd if broadcast is TRUE. Assumes fd is not INVALID_SOCKET, and name is not
* NULL.
* Returns 0 on success, -1 on failure.
*/
static int NetBTSendNameQuery(SOCKET fd, const UCHAR name[NCBNAMSZ], WORD xid,
WORD qtype, DWORD destAddr, BOOL broadcast)
{
int ret = 0, on = 1;
struct in_addr addr;
addr.s_addr = destAddr;
TRACE("name %s, dest addr %s\n", name, inet_ntoa(addr));
if (broadcast)
ret = setsockopt(fd, SOL_SOCKET, SO_BROADCAST, (const char*)&on, sizeof(on));
if(ret == 0)
{
WSABUF wsaBuf;
UCHAR buf[SIMPLE_NAME_QUERY_PKT_SIZE];
struct sockaddr_in sin;
memset(&sin, 0, sizeof(sin));
sin.sin_addr.s_addr = destAddr;
sin.sin_family = AF_INET;
sin.sin_port = htons(PORT_NBNS);
wsaBuf.buf = (CHAR*)buf;
wsaBuf.len = NetBTNameReq(name, xid, qtype, broadcast, buf,
sizeof(buf));
if (wsaBuf.len > 0)
{
DWORD bytesSent;
ret = WSASendTo(fd, &wsaBuf, 1, &bytesSent, 0,
(struct sockaddr*)&sin, sizeof(sin), NULL, NULL);
if (ret < 0 || bytesSent < wsaBuf.len)
ret = -1;
else
ret = 0;
}
else
ret = -1;
}
return ret;
}
typedef BOOL (*NetBTAnswerCallback)(void *data, WORD answerCount,
WORD answerIndex, PUCHAR rData, WORD rdLength);
/* Waits on fd until GetTickCount() returns a value greater than or equal to
* waitUntil for a name service response. If a name response matching xid
* is received, calls answerCallback once for each answer resource record in
* the response. (The callback's answerCount will be the total number of
* answers to expect, and answerIndex will be the 0-based index that's being
* sent this time.) Quits parsing if answerCallback returns FALSE.
* Returns NRC_GOODRET on timeout or a valid response received, something else
* on error.
*/
static UCHAR NetBTWaitForNameResponse(const NetBTAdapter *adapter, SOCKET fd,
DWORD waitUntil, NetBTAnswerCallback answerCallback, void *data)
{
BOOL found = FALSE;
DWORD now;
UCHAR ret = NRC_GOODRET;
if (!adapter) return NRC_BADDR;
if (fd == INVALID_SOCKET) return NRC_BADDR;
if (!answerCallback) return NRC_BADDR;
while (!found && ret == NRC_GOODRET && (int)((now = GetTickCount()) - waitUntil) < 0)
{
DWORD msToWait = waitUntil - now;
struct fd_set fds;
struct timeval timeout = { msToWait / 1000, msToWait % 1000 };
int r;
FD_ZERO(&fds);
FD_SET(fd, &fds);
r = select(fd + 1, &fds, NULL, NULL, &timeout);
if (r < 0)
ret = NRC_SYSTEM;
else if (r == 1)
{
/* FIXME: magic #, is this always enough? */
UCHAR buffer[256];
int fromsize;
struct sockaddr_in fromaddr;
WORD respXID, flags, queryCount, answerCount;
WSABUF wsaBuf = { sizeof(buffer), (CHAR*)buffer };
DWORD bytesReceived, recvFlags = 0;
fromsize = sizeof(fromaddr);
r = WSARecvFrom(fd, &wsaBuf, 1, &bytesReceived, &recvFlags,
(struct sockaddr*)&fromaddr, &fromsize, NULL, NULL);
if(r < 0)
{
ret = NRC_SYSTEM;
break;
}
if (bytesReceived < NBNS_HEADER_SIZE)
continue;
respXID = NBR_GETWORD(buffer);
if (adapter->nameQueryXID != respXID)
continue;
flags = NBR_GETWORD(buffer + 2);
queryCount = NBR_GETWORD(buffer + 4);
answerCount = NBR_GETWORD(buffer + 6);
/* a reply shouldn't contain a query, ignore bad packet */
if (queryCount > 0)
continue;
if ((flags & NBNS_RESPONSE_AND_OPCODE) == NBNS_RESPONSE_AND_QUERY)
{
if ((flags & NBNS_REPLYCODE) != 0)
ret = NRC_NAMERR;
else if ((flags & NBNS_REPLYCODE) == 0 && answerCount > 0)
{
PUCHAR ptr = buffer + NBNS_HEADER_SIZE;
BOOL shouldContinue = TRUE;
WORD answerIndex = 0;
found = TRUE;
/* decode one answer at a time */
while (ret == NRC_GOODRET && answerIndex < answerCount &&
ptr - buffer < bytesReceived && shouldContinue)
{
WORD rLen;
/* scan past name */
for (; ptr[0] && ptr - buffer < bytesReceived; )
ptr += ptr[0] + 1;
ptr++;
ptr += 2; /* scan past type */
if (ptr - buffer < bytesReceived && ret == NRC_GOODRET
&& NBR_GETWORD(ptr) == NBNS_CLASS_INTERNET)
ptr += sizeof(WORD);
else
ret = NRC_SYSTEM; /* parse error */
ptr += sizeof(DWORD); /* TTL */
rLen = NBR_GETWORD(ptr);
rLen = min(rLen, bytesReceived - (ptr - buffer));
ptr += sizeof(WORD);
shouldContinue = answerCallback(data, answerCount,
answerIndex, ptr, rLen);
ptr += rLen;
answerIndex++;
}
}
}
}
}
TRACE("returning 0x%02x\n", ret);
return ret;
}
typedef struct _NetBTNameQueryData {
NBNameCacheEntry *cacheEntry;
UCHAR ret;
} NetBTNameQueryData;
/* Name query callback function for NetBTWaitForNameResponse, creates a cache
* entry on the first answer, adds each address as it's called again (as long
* as there's space). If there's an error that should be propagated as the
* NetBIOS error, modifies queryData's ret member to the proper return code.
*/
static BOOL NetBTFindNameAnswerCallback(void *pVoid, WORD answerCount,
WORD answerIndex, PUCHAR rData, WORD rLen)
{
NetBTNameQueryData *queryData = pVoid;
BOOL ret;
if (queryData)
{
if (queryData->cacheEntry == NULL)
{
queryData->cacheEntry = HeapAlloc(GetProcessHeap(), 0,
FIELD_OFFSET(NBNameCacheEntry, addresses[answerCount]));
if (queryData->cacheEntry)
queryData->cacheEntry->numAddresses = 0;
else
queryData->ret = NRC_OSRESNOTAV;
}
if (rLen == 6 && queryData->cacheEntry &&
queryData->cacheEntry->numAddresses < answerCount)
{
queryData->cacheEntry->addresses[queryData->cacheEntry->
numAddresses++] = *(const DWORD *)(rData + 2);
ret = queryData->cacheEntry->numAddresses < answerCount;
}
else
ret = FALSE;
}
else
ret = FALSE;
return ret;
}
/* Workhorse NetBT name lookup function. Sends a name lookup query for
* ncb->ncb_callname to sendTo, as a broadcast if broadcast is TRUE, using
* adapter->nameQueryXID as the transaction ID. Waits up to timeout
* milliseconds, and retries up to maxQueries times, waiting for a reply.
* If a valid response is received, stores the looked up addresses as a
* NBNameCacheEntry in *cacheEntry.
* Returns NRC_GOODRET on success, though this may not mean the name was
* resolved--check whether *cacheEntry is NULL.
*/
static UCHAR NetBTNameWaitLoop(const NetBTAdapter *adapter, SOCKET fd, const NCB *ncb,
DWORD sendTo, BOOL broadcast, DWORD timeout, DWORD maxQueries,
NBNameCacheEntry **cacheEntry)
{
unsigned int queries;
NetBTNameQueryData queryData;
if (!adapter) return NRC_BADDR;
if (fd == INVALID_SOCKET) return NRC_BADDR;
if (!ncb) return NRC_BADDR;
if (!cacheEntry) return NRC_BADDR;
queryData.cacheEntry = NULL;
queryData.ret = NRC_GOODRET;
for (queries = 0; queryData.cacheEntry == NULL && queries < maxQueries;
queries++)
{
if (!NCB_CANCELLED(ncb))
{
int r = NetBTSendNameQuery(fd, ncb->ncb_callname,
adapter->nameQueryXID, NBNS_TYPE_NB, sendTo, broadcast);
if (r == 0)
queryData.ret = NetBTWaitForNameResponse(adapter, fd,
GetTickCount() + timeout, NetBTFindNameAnswerCallback,
&queryData);
else
queryData.ret = NRC_SYSTEM;
}
else
queryData.ret = NRC_CMDCAN;
}
if (queryData.cacheEntry)
{
memcpy(queryData.cacheEntry->name, ncb->ncb_callname, NCBNAMSZ);
memcpy(queryData.cacheEntry->nbname, ncb->ncb_callname, NCBNAMSZ);
}
*cacheEntry = queryData.cacheEntry;
return queryData.ret;
}
/* Attempts to add cacheEntry to the name cache in *nameCache; if *nameCache
* has not yet been created, creates it, using gCacheTimeout as the cache
* entry timeout. If memory allocation fails, or if NBNameCacheAddEntry fails,
* frees cacheEntry.
* Returns NRC_GOODRET on success, and something else on failure.
*/
static UCHAR NetBTStoreCacheEntry(struct NBNameCache **nameCache,
NBNameCacheEntry *cacheEntry)
{
UCHAR ret;
if (!nameCache) return NRC_BADDR;
if (!cacheEntry) return NRC_BADDR;
if (!*nameCache)
*nameCache = NBNameCacheCreate(GetProcessHeap(), gCacheTimeout);
if (*nameCache)
ret = NBNameCacheAddEntry(*nameCache, cacheEntry)
? NRC_GOODRET : NRC_OSRESNOTAV;
else
{
HeapFree(GetProcessHeap(), 0, cacheEntry);
ret = NRC_OSRESNOTAV;
}
return ret;
}
/* Attempts to resolve name using inet_addr(), then gethostbyname() if
* gEnableDNS is TRUE, if the suffix byte is either <00> or <20>. If the name
* can be looked up, returns 0 and stores the looked up addresses as a
* NBNameCacheEntry in *cacheEntry.
* Returns NRC_GOODRET on success, though this may not mean the name was
* resolved--check whether *cacheEntry is NULL. Returns something else on
* error.
*/
static UCHAR NetBTinetResolve(const UCHAR name[NCBNAMSZ],
NBNameCacheEntry **cacheEntry)
{
UCHAR ret = NRC_GOODRET;
TRACE("name %s, cacheEntry %p\n", name, cacheEntry);
if (!name) return NRC_BADDR;
if (!cacheEntry) return NRC_BADDR;
if (isalnum(name[0]) && (name[NCBNAMSZ - 1] == 0 ||
name[NCBNAMSZ - 1] == 0x20))
{
CHAR toLookup[NCBNAMSZ];
unsigned int i;
for (i = 0; i < NCBNAMSZ - 1 && name[i] && name[i] != ' '; i++)
toLookup[i] = name[i];
toLookup[i] = '\0';
if (isdigit(toLookup[0]))
{
unsigned long addr = inet_addr(toLookup);
if (addr != INADDR_NONE)
{
*cacheEntry = HeapAlloc(GetProcessHeap(), 0,
FIELD_OFFSET(NBNameCacheEntry, addresses[1]));
if (*cacheEntry)
{
memcpy((*cacheEntry)->name, name, NCBNAMSZ);
memset((*cacheEntry)->nbname, 0, NCBNAMSZ);
(*cacheEntry)->nbname[0] = '*';
(*cacheEntry)->numAddresses = 1;
(*cacheEntry)->addresses[0] = addr;
}
else
ret = NRC_OSRESNOTAV;
}
}
if (gEnableDNS && ret == NRC_GOODRET && !*cacheEntry)
{
struct hostent *host;
if ((host = gethostbyname(toLookup)) != NULL)
{
for (i = 0; host->h_addr_list && host->h_addr_list[i]; i++)
;
if (host->h_addr_list && host->h_addr_list[0])
{
*cacheEntry = HeapAlloc(GetProcessHeap(), 0,
FIELD_OFFSET(NBNameCacheEntry, addresses[i]));
if (*cacheEntry)
{
memcpy((*cacheEntry)->name, name, NCBNAMSZ);
memset((*cacheEntry)->nbname, 0, NCBNAMSZ);
(*cacheEntry)->nbname[0] = '*';
(*cacheEntry)->numAddresses = i;
for (i = 0; i < (*cacheEntry)->numAddresses; i++)
(*cacheEntry)->addresses[i] =
*(DWORD*)host->h_addr_list[i];
}
else
ret = NRC_OSRESNOTAV;
}
}
}
}
TRACE("returning 0x%02x\n", ret);
return ret;
}
/* Looks up the name in ncb->ncb_callname, first in the name caches (global
* and this adapter's), then using gethostbyname(), next by WINS if configured,
* and finally using broadcast NetBT name resolution. In NBT parlance, this
* makes this an "H-node". Stores an entry in the appropriate name cache for a
* found node, and returns it as *cacheEntry.
* Assumes data, ncb, and cacheEntry are not NULL.
* Returns NRC_GOODRET on success--which doesn't mean the name was resolved,
* just that all name lookup operations completed successfully--and something
* else on failure. *cacheEntry will be NULL if the name was not found.
*/
static UCHAR NetBTInternalFindName(NetBTAdapter *adapter, PNCB ncb,
const NBNameCacheEntry **cacheEntry)
{
UCHAR ret = NRC_GOODRET;
TRACE("adapter %p, ncb %p, cacheEntry %p\n", adapter, ncb, cacheEntry);
if (!cacheEntry) return NRC_BADDR;
*cacheEntry = NULL;
if (!adapter) return NRC_BADDR;
if (!ncb) return NRC_BADDR;
if (ncb->ncb_callname[0] == '*')
ret = NRC_NOWILD;
else
{
*cacheEntry = NBNameCacheFindEntry(gNameCache, ncb->ncb_callname);
if (!*cacheEntry)
*cacheEntry = NBNameCacheFindEntry(adapter->nameCache,
ncb->ncb_callname);
if (!*cacheEntry)
{
NBNameCacheEntry *newEntry = NULL;
ret = NetBTinetResolve(ncb->ncb_callname, &newEntry);
if (ret == NRC_GOODRET && newEntry)
{
ret = NetBTStoreCacheEntry(&gNameCache, newEntry);
if (ret != NRC_GOODRET)
newEntry = NULL;
}
else
{
SOCKET fd = WSASocketA(PF_INET, SOCK_DGRAM, IPPROTO_UDP, NULL,
0, WSA_FLAG_OVERLAPPED);
if(fd == INVALID_SOCKET)
ret = NRC_OSRESNOTAV;
else
{
int winsNdx;
adapter->nameQueryXID++;
for (winsNdx = 0; ret == NRC_GOODRET && *cacheEntry == NULL
&& winsNdx < gNumWINSServers; winsNdx++)
ret = NetBTNameWaitLoop(adapter, fd, ncb,
gWINSServers[winsNdx], FALSE, gWINSQueryTimeout,
gWINSQueries, &newEntry);
if (ret == NRC_GOODRET && newEntry)
{
ret = NetBTStoreCacheEntry(&gNameCache, newEntry);
if (ret != NRC_GOODRET)
newEntry = NULL;
}
if (ret == NRC_GOODRET && *cacheEntry == NULL)
{
DWORD bcastAddr =
adapter->ipr.dwAddr & adapter->ipr.dwMask;
if (adapter->ipr.dwBCastAddr)
bcastAddr |= ~adapter->ipr.dwMask;
ret = NetBTNameWaitLoop(adapter, fd, ncb, bcastAddr,
TRUE, gBCastQueryTimeout, gBCastQueries, &newEntry);
if (ret == NRC_GOODRET && newEntry)
{
ret = NetBTStoreCacheEntry(&adapter->nameCache,
newEntry);
if (ret != NRC_GOODRET)
newEntry = NULL;
}
}
closesocket(fd);
}
}
*cacheEntry = newEntry;
}
}
TRACE("returning 0x%02x\n", ret);
return ret;
}
typedef struct _NetBTNodeQueryData
{
BOOL gotResponse;
PADAPTER_STATUS astat;
WORD astatLen;
} NetBTNodeQueryData;
/* Callback function for NetBTAstatRemote, parses the rData for the node
* status and name list of the remote node. Always returns FALSE, since
* there's never more than one answer we care about in a node status response.
*/
static BOOL NetBTNodeStatusAnswerCallback(void *pVoid, WORD answerCount,
WORD answerIndex, PUCHAR rData, WORD rLen)
{
NetBTNodeQueryData *data = pVoid;
if (data && !data->gotResponse && rData && rLen >= 1)
{
/* num names is first byte; each name is NCBNAMSZ + 2 bytes */
if (rLen >= rData[0] * (NCBNAMSZ + 2))
{
WORD i;
PUCHAR src;
PNAME_BUFFER dst;
data->gotResponse = TRUE;
data->astat->name_count = rData[0];
for (i = 0, src = rData + 1,
dst = (PNAME_BUFFER)((PUCHAR)data->astat +
sizeof(ADAPTER_STATUS));
i < data->astat->name_count && src - rData < rLen &&
(PUCHAR)dst - (PUCHAR)data->astat < data->astatLen;
i++, dst++, src += NCBNAMSZ + 2)
{
UCHAR flags = *(src + NCBNAMSZ);
memcpy(dst->name, src, NCBNAMSZ);
/* we won't actually see a registering name in the returned
* response. It's useful to see if no other flags are set; if
* none are, then the name is registered. */
dst->name_flags = REGISTERING;
if (flags & 0x80)
dst->name_flags |= GROUP_NAME;
if (flags & 0x10)
dst->name_flags |= DEREGISTERED;
if (flags & 0x08)
dst->name_flags |= DUPLICATE;
if (dst->name_flags == REGISTERING)
dst->name_flags = REGISTERED;
}
/* arbitrarily set HW type to Ethernet */
data->astat->adapter_type = 0xfe;
if (src - rData < rLen)
memcpy(data->astat->adapter_address, src,
min(rLen - (src - rData), 6));
}
}
return FALSE;
}
/* This uses the WINS timeout and query values, as they're the
* UCAST_REQ_RETRY_TIMEOUT and UCAST_REQ_RETRY_COUNT according to the RFCs.
*/
static UCHAR NetBTAstatRemote(NetBTAdapter *adapter, PNCB ncb)
{
UCHAR ret = NRC_GOODRET;
const NBNameCacheEntry *cacheEntry = NULL;
TRACE("adapter %p, NCB %p\n", adapter, ncb);
if (!adapter) return NRC_BADDR;
if (!ncb) return NRC_INVADDRESS;
ret = NetBTInternalFindName(adapter, ncb, &cacheEntry);
if (ret == NRC_GOODRET && cacheEntry)
{
if (cacheEntry->numAddresses > 0)
{
SOCKET fd = WSASocketA(PF_INET, SOCK_DGRAM, IPPROTO_UDP, NULL, 0,
WSA_FLAG_OVERLAPPED);
if(fd == INVALID_SOCKET)
ret = NRC_OSRESNOTAV;
else
{
NetBTNodeQueryData queryData;
DWORD queries;
PADAPTER_STATUS astat = (PADAPTER_STATUS)ncb->ncb_buffer;
adapter->nameQueryXID++;
astat->name_count = 0;
queryData.gotResponse = FALSE;
queryData.astat = astat;
queryData.astatLen = ncb->ncb_length;
for (queries = 0; !queryData.gotResponse &&
queries < gWINSQueries; queries++)
{
if (!NCB_CANCELLED(ncb))
{
int r = NetBTSendNameQuery(fd, ncb->ncb_callname,
adapter->nameQueryXID, NBNS_TYPE_NBSTAT,
cacheEntry->addresses[0], FALSE);
if (r == 0)
ret = NetBTWaitForNameResponse(adapter, fd,
GetTickCount() + gWINSQueryTimeout,
NetBTNodeStatusAnswerCallback, &queryData);
else
ret = NRC_SYSTEM;
}
else
ret = NRC_CMDCAN;
}
closesocket(fd);
}
}
else
ret = NRC_CMDTMO;
}
else if (ret == NRC_CMDCAN)
; /* do nothing, we were cancelled */
else
ret = NRC_CMDTMO;
TRACE("returning 0x%02x\n", ret);
return ret;
}
static UCHAR NetBTAstat(void *adapt, PNCB ncb)
{
NetBTAdapter *adapter = adapt;
UCHAR ret;
TRACE("adapt %p, NCB %p\n", adapt, ncb);
if (!adapter) return NRC_ENVNOTDEF;
if (!ncb) return NRC_INVADDRESS;
if (!ncb->ncb_buffer) return NRC_BADDR;
if (ncb->ncb_length < sizeof(ADAPTER_STATUS)) return NRC_BUFLEN;
if (ncb->ncb_callname[0] == '*')
{
DWORD physAddrLen;
MIB_IFROW ifRow;
PADAPTER_STATUS astat = (PADAPTER_STATUS)ncb->ncb_buffer;
memset(astat, 0, sizeof(ADAPTER_STATUS));
astat->rev_major = 3;
ifRow.dwIndex = adapter->ipr.dwIndex;
if (GetIfEntry(&ifRow) != NO_ERROR)
ret = NRC_BRIDGE;
else
{
physAddrLen = min(ifRow.dwPhysAddrLen, 6);
if (physAddrLen > 0)
memcpy(astat->adapter_address, ifRow.bPhysAddr, physAddrLen);
/* doubt anyone cares, but why not.. */
if (ifRow.dwType == MIB_IF_TYPE_TOKENRING)
astat->adapter_type = 0xff;
else
astat->adapter_type = 0xfe; /* for Ethernet */
astat->max_sess_pkt_size = 0xffff;
astat->xmit_success = adapter->xmit_success;
astat->recv_success = adapter->recv_success;
ret = NRC_GOODRET;
}
}
else
ret = NetBTAstatRemote(adapter, ncb);
TRACE("returning 0x%02x\n", ret);
return ret;
}
static UCHAR NetBTFindName(void *adapt, PNCB ncb)
{
NetBTAdapter *adapter = adapt;
UCHAR ret;
const NBNameCacheEntry *cacheEntry = NULL;
PFIND_NAME_HEADER foundName;
TRACE("adapt %p, NCB %p\n", adapt, ncb);
if (!adapter) return NRC_ENVNOTDEF;
if (!ncb) return NRC_INVADDRESS;
if (!ncb->ncb_buffer) return NRC_BADDR;
if (ncb->ncb_length < sizeof(FIND_NAME_HEADER)) return NRC_BUFLEN;
foundName = (PFIND_NAME_HEADER)ncb->ncb_buffer;
memset(foundName, 0, sizeof(FIND_NAME_HEADER));
ret = NetBTInternalFindName(adapter, ncb, &cacheEntry);
if (ret == NRC_GOODRET)
{
if (cacheEntry)
{
DWORD spaceFor = min((ncb->ncb_length - sizeof(FIND_NAME_HEADER)) /
sizeof(FIND_NAME_BUFFER), cacheEntry->numAddresses);
DWORD ndx;
for (ndx = 0; ndx < spaceFor; ndx++)
{
PFIND_NAME_BUFFER findNameBuffer;
findNameBuffer =
(PFIND_NAME_BUFFER)((PUCHAR)foundName +
sizeof(FIND_NAME_HEADER) + foundName->node_count *
sizeof(FIND_NAME_BUFFER));
memset(findNameBuffer->destination_addr, 0, 2);
memcpy(findNameBuffer->destination_addr + 2,
&adapter->ipr.dwAddr, sizeof(DWORD));
memset(findNameBuffer->source_addr, 0, 2);
memcpy(findNameBuffer->source_addr + 2,
&cacheEntry->addresses[ndx], sizeof(DWORD));
foundName->node_count++;
}
if (spaceFor < cacheEntry->numAddresses)
ret = NRC_BUFLEN;
}
else
ret = NRC_CMDTMO;
}
TRACE("returning 0x%02x\n", ret);
return ret;
}
static UCHAR NetBTSessionReq(SOCKET fd, const UCHAR *calledName,
const UCHAR *callingName)
{
UCHAR buffer[NBSS_HDRSIZE + MAX_DOMAIN_NAME_LEN * 2], ret;
int r;
unsigned int len = 0;
DWORD bytesSent, bytesReceived, recvFlags = 0;
WSABUF wsaBuf;
buffer[0] = NBSS_REQ;
buffer[1] = 0;
len += NetBTNameEncode(calledName, &buffer[NBSS_HDRSIZE]);
len += NetBTNameEncode(callingName, &buffer[NBSS_HDRSIZE + len]);
NBR_ADDWORD(&buffer[2], len);
wsaBuf.len = len + NBSS_HDRSIZE;
wsaBuf.buf = (char*)buffer;
r = WSASend(fd, &wsaBuf, 1, &bytesSent, 0, NULL, NULL);
if(r < 0 || bytesSent < len + NBSS_HDRSIZE)
{
ERR("send failed\n");
return NRC_SABORT;
}
/* I've already set the recv timeout on this socket (if it supports it), so
* just block. Hopefully we'll always receive the session acknowledgement
* within one timeout.
*/
wsaBuf.len = NBSS_HDRSIZE + 1;
r = WSARecv(fd, &wsaBuf, 1, &bytesReceived, &recvFlags, NULL, NULL);
if (r < 0 || bytesReceived < NBSS_HDRSIZE)
ret = NRC_SABORT;
else if (buffer[0] == NBSS_NACK)
{
if (r == NBSS_HDRSIZE + 1)
{
switch (buffer[NBSS_HDRSIZE])
{
case NBSS_ERR_INSUFFICIENT_RESOURCES:
ret = NRC_REMTFUL;
break;
default:
ret = NRC_NOCALL;
}
}
else
ret = NRC_NOCALL;
}
else if (buffer[0] == NBSS_RETARGET)
{
FIXME("Got a session retarget, can't deal\n");
ret = NRC_NOCALL;
}
else if (buffer[0] == NBSS_ACK)
ret = NRC_GOODRET;
else
ret = NRC_SYSTEM;
TRACE("returning 0x%02x\n", ret);
return ret;
}
static UCHAR NetBTCall(void *adapt, PNCB ncb, void **sess)
{
NetBTAdapter *adapter = adapt;
UCHAR ret;
const NBNameCacheEntry *cacheEntry = NULL;
TRACE("adapt %p, ncb %p\n", adapt, ncb);
if (!adapter) return NRC_ENVNOTDEF;
if (!ncb) return NRC_INVADDRESS;
if (!sess) return NRC_BADDR;
ret = NetBTInternalFindName(adapter, ncb, &cacheEntry);
if (ret == NRC_GOODRET)
{
if (cacheEntry && cacheEntry->numAddresses > 0)
{
SOCKET fd;
fd = WSASocketA(PF_INET, SOCK_STREAM, IPPROTO_TCP, NULL, 0,
WSA_FLAG_OVERLAPPED);
if (fd != INVALID_SOCKET)
{
DWORD timeout;
struct sockaddr_in sin;
if (ncb->ncb_rto > 0)
{
timeout = ncb->ncb_rto * 500;
setsockopt(fd, SOL_SOCKET, SO_RCVTIMEO, (char*)&timeout,
sizeof(timeout));
}
if (ncb->ncb_sto > 0)
{
timeout = ncb->ncb_sto * 500;
setsockopt(fd, SOL_SOCKET, SO_SNDTIMEO, (char*)&timeout,
sizeof(timeout));
}
memset(&sin, 0, sizeof(sin));
memcpy(&sin.sin_addr, &cacheEntry->addresses[0],
sizeof(sin.sin_addr));
sin.sin_family = AF_INET;
sin.sin_port = htons(PORT_NBSS);
/* FIXME: use nonblocking mode for the socket, check the
* cancel flag periodically
*/
if (connect(fd, (struct sockaddr *)&sin, sizeof(sin))
== SOCKET_ERROR)
ret = NRC_CMDTMO;
else
{
static const UCHAR fakedCalledName[] = "*SMBSERVER";
const UCHAR *calledParty = cacheEntry->nbname[0] == '*'
? fakedCalledName : cacheEntry->nbname;
ret = NetBTSessionReq(fd, calledParty, ncb->ncb_name);
if (ret != NRC_GOODRET && calledParty[0] == '*')
{
FIXME("NBT session to \"*SMBSERVER\" refused,\n");
FIXME("should try finding name using ASTAT\n");
}
}
if (ret != NRC_GOODRET)
closesocket(fd);
else
{
NetBTSession *session = HeapAlloc(
GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(NetBTSession));
if (session)
{
session->fd = fd;
InitializeCriticalSection(&session->cs);
session->cs.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": NetBTSession.cs");
*sess = session;
}
else
{
ret = NRC_OSRESNOTAV;
closesocket(fd);
}
}
}
else
ret = NRC_OSRESNOTAV;
}
else
ret = NRC_NAMERR;
}
TRACE("returning 0x%02x\n", ret);
return ret;
}
/* Notice that I don't protect against multiple thread access to NetBTSend.
* This is because I don't update any data in the adapter, and I only make a
* single call to WSASend, which I assume to act atomically (not interleaving
* data from other threads).
* I don't lock, because I only depend on the fd being valid, and this won't be
* true until a session setup is completed.
*/
static UCHAR NetBTSend(void *adapt, void *sess, PNCB ncb)
{
NetBTAdapter *adapter = adapt;
NetBTSession *session = sess;
UCHAR buffer[NBSS_HDRSIZE], ret;
int r;
WSABUF wsaBufs[2];
DWORD bytesSent;
TRACE("adapt %p, session %p, NCB %p\n", adapt, session, ncb);
if (!adapter) return NRC_ENVNOTDEF;
if (!ncb) return NRC_INVADDRESS;
if (!ncb->ncb_buffer) return NRC_BADDR;
if (!session) return NRC_SNUMOUT;
if (session->fd == INVALID_SOCKET) return NRC_SNUMOUT;
buffer[0] = NBSS_MSG;
buffer[1] = 0;
NBR_ADDWORD(&buffer[2], ncb->ncb_length);
wsaBufs[0].len = NBSS_HDRSIZE;
wsaBufs[0].buf = (char*)buffer;
wsaBufs[1].len = ncb->ncb_length;
wsaBufs[1].buf = (char*)ncb->ncb_buffer;
r = WSASend(session->fd, wsaBufs, ARRAY_SIZE(wsaBufs), &bytesSent, 0, NULL, NULL);
if (r == SOCKET_ERROR)
{
NetBIOSHangupSession(ncb);
ret = NRC_SABORT;
}
else if (bytesSent < NBSS_HDRSIZE + ncb->ncb_length)
{
FIXME("Only sent %d bytes (of %d), hanging up session\n", bytesSent,
NBSS_HDRSIZE + ncb->ncb_length);
NetBIOSHangupSession(ncb);
ret = NRC_SABORT;
}
else
{
ret = NRC_GOODRET;
adapter->xmit_success++;
}
TRACE("returning 0x%02x\n", ret);
return ret;
}
static UCHAR NetBTRecv(void *adapt, void *sess, PNCB ncb)
{
NetBTAdapter *adapter = adapt;
NetBTSession *session = sess;
UCHAR buffer[NBSS_HDRSIZE], ret;
int r;
WSABUF wsaBufs[2];
DWORD bufferCount, bytesReceived, flags;
TRACE("adapt %p, session %p, NCB %p\n", adapt, session, ncb);
if (!adapter) return NRC_ENVNOTDEF;
if (!ncb) return NRC_BADDR;
if (!ncb->ncb_buffer) return NRC_BADDR;
if (!session) return NRC_SNUMOUT;
if (session->fd == INVALID_SOCKET) return NRC_SNUMOUT;
EnterCriticalSection(&session->cs);
bufferCount = 0;
if (session->bytesPending == 0)
{
bufferCount++;
wsaBufs[0].len = NBSS_HDRSIZE;
wsaBufs[0].buf = (char*)buffer;
}
wsaBufs[bufferCount].len = ncb->ncb_length;
wsaBufs[bufferCount].buf = (char*)ncb->ncb_buffer;
bufferCount++;
flags = 0;
/* FIXME: should poll a bit so I can check the cancel flag */
r = WSARecv(session->fd, wsaBufs, bufferCount, &bytesReceived, &flags,
NULL, NULL);
if (r == SOCKET_ERROR && WSAGetLastError() != WSAEWOULDBLOCK)
{
LeaveCriticalSection(&session->cs);
ERR("Receive error, WSAGetLastError() returns %d\n", WSAGetLastError());
NetBIOSHangupSession(ncb);
ret = NRC_SABORT;
}
else if (NCB_CANCELLED(ncb))
{
LeaveCriticalSection(&session->cs);
ret = NRC_CMDCAN;
}
else
{
if (bufferCount == 2)
{
if (buffer[0] == NBSS_KEEPALIVE)
{
LeaveCriticalSection(&session->cs);
FIXME("Oops, received a session keepalive and lost my place\n");
/* need to read another session header until we get a session
* message header. */
NetBIOSHangupSession(ncb);
ret = NRC_SABORT;
goto error;
}
else if (buffer[0] != NBSS_MSG)
{
LeaveCriticalSection(&session->cs);
FIXME("Received unexpected session msg type %d\n", buffer[0]);
NetBIOSHangupSession(ncb);
ret = NRC_SABORT;
goto error;
}
else
{
if (buffer[1] & NBSS_EXTENSION)
{
LeaveCriticalSection(&session->cs);
FIXME("Received a message that's too long for my taste\n");
NetBIOSHangupSession(ncb);
ret = NRC_SABORT;
goto error;
}
else
{
session->bytesPending = NBSS_HDRSIZE
+ NBR_GETWORD(&buffer[2]) - bytesReceived;
ncb->ncb_length = bytesReceived - NBSS_HDRSIZE;
LeaveCriticalSection(&session->cs);
}
}
}
else
{
if (bytesReceived < session->bytesPending)
session->bytesPending -= bytesReceived;
else
session->bytesPending = 0;
LeaveCriticalSection(&session->cs);
ncb->ncb_length = bytesReceived;
}
if (session->bytesPending > 0)
ret = NRC_INCOMP;
else
{
ret = NRC_GOODRET;
adapter->recv_success++;
}
}
error:
TRACE("returning 0x%02x\n", ret);
return ret;
}
static UCHAR NetBTHangup(void *adapt, void *sess)
{
NetBTSession *session = sess;
TRACE("adapt %p, session %p\n", adapt, session);
if (!session) return NRC_SNUMOUT;
/* I don't lock the session, because NetBTRecv knows not to decrement
* past 0, so if a receive completes after this it should still deal.
*/
closesocket(session->fd);
session->fd = INVALID_SOCKET;
session->bytesPending = 0;
session->cs.DebugInfo->Spare[0] = 0;
DeleteCriticalSection(&session->cs);
HeapFree(GetProcessHeap(), 0, session);
return NRC_GOODRET;
}
static void NetBTCleanupAdapter(void *adapt)
{
TRACE("adapt %p\n", adapt);
if (adapt)
{
NetBTAdapter *adapter = adapt;
if (adapter->nameCache)
NBNameCacheDestroy(adapter->nameCache);
HeapFree(GetProcessHeap(), 0, adapt);
}
}
static void NetBTCleanup(void)
{
TRACE("\n");
if (gNameCache)
{
NBNameCacheDestroy(gNameCache);
gNameCache = NULL;
}
}
static UCHAR NetBTRegisterAdapter(const MIB_IPADDRROW *ipRow)
{
UCHAR ret;
NetBTAdapter *adapter;
if (!ipRow) return NRC_BADDR;
adapter = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(NetBTAdapter));
if (adapter)
{
adapter->ipr = *ipRow;
if (!NetBIOSRegisterAdapter(gTransportID, ipRow->dwIndex, adapter))
{
NetBTCleanupAdapter(adapter);
ret = NRC_SYSTEM;
}
else
ret = NRC_GOODRET;
}
else
ret = NRC_OSRESNOTAV;
return ret;
}
/* Callback for NetBIOS adapter enumeration. Assumes closure is a pointer to
* a MIB_IPADDRTABLE containing all the IP adapters needed to be added to the
* NetBIOS adapter table. For each callback, checks if the passed-in adapt
* has an entry in the table; if so, this adapter was enumerated previously,
* and it's enabled. As a flag, the table's dwAddr entry is changed to
* INADDR_LOOPBACK, since this is an invalid address for a NetBT adapter.
* The NetBTEnum function will add any remaining adapters from the
* MIB_IPADDRTABLE to the NetBIOS adapter table.
*/
static BOOL NetBTEnumCallback(UCHAR totalLANAs, UCHAR lanaIndex,
ULONG transport, const NetBIOSAdapterImpl *data, void *closure)
{
BOOL ret;
PMIB_IPADDRTABLE table = closure;
if (table && data)
{
DWORD ndx;
ret = FALSE;
for (ndx = 0; !ret && ndx < table->dwNumEntries; ndx++)
{
const NetBTAdapter *adapter = data->data;
if (table->table[ndx].dwIndex == adapter->ipr.dwIndex)
{
NetBIOSEnableAdapter(data->lana);
table->table[ndx].dwAddr = INADDR_LOOPBACK;
ret = TRUE;
}
}
}
else
ret = FALSE;
return ret;
}
/* Enumerates adapters by:
* - retrieving the IP address table for the local machine
* - eliminating loopback addresses from the table
* - eliminating redundant addresses, that is, multiple addresses on the same
* subnet
* Calls NetBIOSEnumAdapters, passing the resulting table as the callback
* data. The callback reenables each adapter that's already in the NetBIOS
* table. After NetBIOSEnumAdapters returns, this function adds any remaining
* adapters to the NetBIOS table.
*/
static UCHAR NetBTEnum(void)
{
UCHAR ret;
DWORD size = 0;
TRACE("\n");
if (GetIpAddrTable(NULL, &size, FALSE) == ERROR_INSUFFICIENT_BUFFER)
{
PMIB_IPADDRTABLE ipAddrs, coalesceTable = NULL;
DWORD numIPAddrs = (size - sizeof(MIB_IPADDRTABLE)) /
sizeof(MIB_IPADDRROW) + 1;
ipAddrs = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, size);
if (ipAddrs)
coalesceTable = HeapAlloc(GetProcessHeap(),
HEAP_ZERO_MEMORY, sizeof(MIB_IPADDRTABLE) +
(min(numIPAddrs, MAX_LANA + 1) - 1) * sizeof(MIB_IPADDRROW));
if (ipAddrs && coalesceTable)
{
if (GetIpAddrTable(ipAddrs, &size, FALSE) == ERROR_SUCCESS)
{
DWORD ndx;
for (ndx = 0; ndx < ipAddrs->dwNumEntries; ndx++)
{
if ((ipAddrs->table[ndx].dwAddr &
ipAddrs->table[ndx].dwMask) !=
htonl((INADDR_LOOPBACK & IN_CLASSA_NET)))
{
BOOL newNetwork = TRUE;
DWORD innerIndex;
/* make sure we don't have more than one entry
* for a subnet */
for (innerIndex = 0; newNetwork &&
innerIndex < coalesceTable->dwNumEntries; innerIndex++)
if ((ipAddrs->table[ndx].dwAddr &
ipAddrs->table[ndx].dwMask) ==
(coalesceTable->table[innerIndex].dwAddr
& coalesceTable->table[innerIndex].dwMask))
newNetwork = FALSE;
if (newNetwork)
memcpy(&coalesceTable->table[
coalesceTable->dwNumEntries++],
&ipAddrs->table[ndx], sizeof(MIB_IPADDRROW));
}
}
NetBIOSEnumAdapters(gTransportID, NetBTEnumCallback,
coalesceTable);
ret = NRC_GOODRET;
for (ndx = 0; ret == NRC_GOODRET &&
ndx < coalesceTable->dwNumEntries; ndx++)
if (coalesceTable->table[ndx].dwAddr != INADDR_LOOPBACK)
ret = NetBTRegisterAdapter(&coalesceTable->table[ndx]);
}
else
ret = NRC_SYSTEM;
HeapFree(GetProcessHeap(), 0, ipAddrs);
HeapFree(GetProcessHeap(), 0, coalesceTable);
}
else
ret = NRC_OSRESNOTAV;
}
else
ret = NRC_SYSTEM;
TRACE("returning 0x%02x\n", ret);
return ret;
}
static const WCHAR VxD_MSTCPW[] = { 'S','Y','S','T','E','M','\\','C','u','r',
'r','e','n','t','C','o','n','t','r','o','l','S','e','t','\\','S','e','r','v',
'i','c','e','s','\\','V','x','D','\\','M','S','T','C','P','\0' };
static const WCHAR NetBT_ParametersW[] = { 'S','Y','S','T','E','M','\\','C','u',
'r','r','e','n','t','C','o','n','t','r','o','l','S','e','t','\\','S','e','r',
'v','i','c','e','s','\\','N','e','t','B','T','\\','P','a','r','a','m','e','t',
'e','r','s','\0' };
static const WCHAR EnableDNSW[] = { 'E','n','a','b','l','e','D','N','S','\0' };
static const WCHAR BcastNameQueryCountW[] = { 'B','c','a','s','t','N','a','m',
'e','Q','u','e','r','y','C','o','u','n','t','\0' };
static const WCHAR BcastNameQueryTimeoutW[] = { 'B','c','a','s','t','N','a','m',
'e','Q','u','e','r','y','T','i','m','e','o','u','t','\0' };
static const WCHAR NameSrvQueryCountW[] = { 'N','a','m','e','S','r','v',
'Q','u','e','r','y','C','o','u','n','t','\0' };
static const WCHAR NameSrvQueryTimeoutW[] = { 'N','a','m','e','S','r','v',
'Q','u','e','r','y','T','i','m','e','o','u','t','\0' };
static const WCHAR ScopeIDW[] = { 'S','c','o','p','e','I','D','\0' };
static const WCHAR CacheTimeoutW[] = { 'C','a','c','h','e','T','i','m','e','o',
'u','t','\0' };
static const WCHAR Config_NetworkW[] = { 'S','o','f','t','w','a','r','e','\\',
'W','i','n','e','\\','N','e','t','w','o','r','k','\0' };
/* Initializes global variables and registers the NetBT transport */
void NetBTInit(void)
{
WSADATA wsa_data;
HKEY hKey;
NetBIOSTransport transport;
LONG ret;
TRACE("\n");
WSAStartup(MAKEWORD(2, 2), &wsa_data);
gEnableDNS = TRUE;
gBCastQueries = BCAST_QUERIES;
gBCastQueryTimeout = BCAST_QUERY_TIMEOUT;
gWINSQueries = WINS_QUERIES;
gWINSQueryTimeout = WINS_QUERY_TIMEOUT;
gNumWINSServers = 0;
memset(gWINSServers, 0, sizeof(gWINSServers));
gScopeID[0] = '\0';
gCacheTimeout = CACHE_TIMEOUT;
/* Try to open the Win9x NetBT configuration key */
ret = RegOpenKeyExW(HKEY_LOCAL_MACHINE, VxD_MSTCPW, 0, KEY_READ, &hKey);
/* If that fails, try the WinNT NetBT configuration key */
if (ret != ERROR_SUCCESS)
ret = RegOpenKeyExW(HKEY_LOCAL_MACHINE, NetBT_ParametersW, 0, KEY_READ,
&hKey);
if (ret == ERROR_SUCCESS)
{
DWORD dword, size;
size = sizeof(dword);
if (RegQueryValueExW(hKey, EnableDNSW, NULL, NULL,
(LPBYTE)&dword, &size) == ERROR_SUCCESS)
gEnableDNS = dword;
size = sizeof(dword);
if (RegQueryValueExW(hKey, BcastNameQueryCountW, NULL, NULL,
(LPBYTE)&dword, &size) == ERROR_SUCCESS && dword >= MIN_QUERIES
&& dword <= MAX_QUERIES)
gBCastQueries = dword;
size = sizeof(dword);
if (RegQueryValueExW(hKey, BcastNameQueryTimeoutW, NULL, NULL,
(LPBYTE)&dword, &size) == ERROR_SUCCESS && dword >= MIN_QUERY_TIMEOUT)
gBCastQueryTimeout = dword;
size = sizeof(dword);
if (RegQueryValueExW(hKey, NameSrvQueryCountW, NULL, NULL,
(LPBYTE)&dword, &size) == ERROR_SUCCESS && dword >= MIN_QUERIES
&& dword <= MAX_QUERIES)
gWINSQueries = dword;
size = sizeof(dword);
if (RegQueryValueExW(hKey, NameSrvQueryTimeoutW, NULL, NULL,
(LPBYTE)&dword, &size) == ERROR_SUCCESS && dword >= MIN_QUERY_TIMEOUT)
gWINSQueryTimeout = dword;
size = sizeof(gScopeID) - 1;
if (RegQueryValueExW(hKey, ScopeIDW, NULL, NULL, (LPBYTE)gScopeID + 1, &size)
== ERROR_SUCCESS)
{
/* convert into L2-encoded version, suitable for use by
NetBTNameEncode */
char *ptr, *lenPtr;
for (ptr = gScopeID + 1, lenPtr = gScopeID; ptr - gScopeID < sizeof(gScopeID) && *ptr; ++ptr)
{
if (*ptr == '.')
{
lenPtr = ptr;
*lenPtr = 0;
}
else
{
++*lenPtr;
}
}
}
if (RegQueryValueExW(hKey, CacheTimeoutW, NULL, NULL,
(LPBYTE)&dword, &size) == ERROR_SUCCESS && dword >= MIN_CACHE_TIMEOUT)
gCacheTimeout = dword;
RegCloseKey(hKey);
}
/* WINE-specific NetBT registry settings. Because our adapter naming is
* different than MS', we can't do per-adapter WINS configuration in the
* same place. Just do a global WINS configuration instead.
*/
/* @@ Wine registry key: HKCU\Software\Wine\Network */
if (RegOpenKeyW(HKEY_CURRENT_USER, Config_NetworkW, &hKey) == ERROR_SUCCESS)
{
static const char *nsValueNames[] = { "WinsServer", "BackupWinsServer" };
char nsString[16];
DWORD size, ndx;
for (ndx = 0; ndx < ARRAY_SIZE(nsValueNames); ndx++)
{
size = ARRAY_SIZE(nsString);
if (RegQueryValueExA(hKey, nsValueNames[ndx], NULL, NULL,
(LPBYTE)nsString, &size) == ERROR_SUCCESS)
{
unsigned long addr = inet_addr(nsString);
if (addr != INADDR_NONE && gNumWINSServers < MAX_WINS_SERVERS)
gWINSServers[gNumWINSServers++] = addr;
}
}
RegCloseKey(hKey);
}
transport.enumerate = NetBTEnum;
transport.astat = NetBTAstat;
transport.findName = NetBTFindName;
transport.call = NetBTCall;
transport.send = NetBTSend;
transport.recv = NetBTRecv;
transport.hangup = NetBTHangup;
transport.cleanupAdapter = NetBTCleanupAdapter;
transport.cleanup = NetBTCleanup;
memcpy(&gTransportID, TRANSPORT_NBT, sizeof(ULONG));
NetBIOSRegisterTransport(gTransportID, &transport);
}
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