forked from osmocom/wireshark
caa884723c
disable the "Details" button in the interface list. Update an error dialog to try to be more helpful. svn path=/trunk/; revision=28675
334 lines
9.3 KiB
C
334 lines
9.3 KiB
C
/* capture_wpcap_packet.c
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* WinPcap-specific interfaces for low-level information (packet.dll).
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* We load WinPcap at run
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* time, so that we only need one Wireshark binary and one TShark binary
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* for Windows, regardless of whether WinPcap is installed or not.
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*
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* $Id$
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 2001 Gerald Combs
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#if defined HAVE_LIBPCAP && defined _WIN32
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#include <glib.h>
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#include <gmodule.h>
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#include <pcap.h>
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/* XXX - yes, I know, I should move cppmagic.h to a generic location. */
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#include "tools/lemon/cppmagic.h"
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#include <epan/value_string.h>
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#include <winsock2.h> /* Needed here to force a definition of WINVER */
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/* for some (all ?) Microsoft compilers newer than vc6. */
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/* (If windows.h were used instead, there might be */
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/* issues re winsock.h included before winsock2.h ) */
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#include <windowsx.h>
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#include <Ntddndis.h>
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#include "capture_wpcap_packet.h"
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/* packet32.h requires sockaddr_storage
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* whether sockaddr_storage is defined or not depends on the Platform SDK
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* version installed. The only one not defining it is the SDK that comes
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* with MSVC 6.0 (WINVER 0x0400).
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*
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* copied from RFC2553 (and slightly modified because of datatypes) ...
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* XXX - defined more than once, move this to a header file */
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#ifndef WINVER
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#error WINVER not defined ....
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#endif
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#if (WINVER <= 0x0400) && defined(_MSC_VER)
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typedef unsigned short eth_sa_family_t;
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/*
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* Desired design of maximum size and alignment
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*/
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#define ETH_SS_MAXSIZE 128 /* Implementation specific max size */
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#define ETH_SS_ALIGNSIZE (sizeof (gint64 /*int64_t*/))
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/* Implementation specific desired alignment */
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/*
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* Definitions used for sockaddr_storage structure paddings design.
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*/
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#define ETH_SS_PAD1SIZE (ETH_SS_ALIGNSIZE - sizeof (eth_sa_family_t))
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#define ETH_SS_PAD2SIZE (ETH_SS_MAXSIZE - (sizeof (eth_sa_family_t) + \
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ETH_SS_PAD1SIZE + ETH_SS_ALIGNSIZE))
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struct sockaddr_storage {
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eth_sa_family_t __ss_family; /* address family */
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/* Following fields are implementation specific */
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char __ss_pad1[ETH_SS_PAD1SIZE];
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/* 6 byte pad, this is to make implementation */
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/* specific pad up to alignment field that */
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/* follows explicit in the data structure */
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gint64 /*int64_t*/ __ss_align; /* field to force desired structure */
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/* storage alignment */
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char __ss_pad2[ETH_SS_PAD2SIZE];
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/* 112 byte pad to achieve desired size, */
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/* _SS_MAXSIZE value minus size of ss_family */
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/* __ss_pad1, __ss_align fields is 112 */
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};
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/* ... copied from RFC2553 */
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#endif /* WINVER */
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#include <Packet32.h>
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gboolean has_wpacket = FALSE;
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/* This module will use the PacketRequest function in packet.dll (coming with WinPcap) to "directly" access
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* the Win32 NDIS network driver(s) and ask for various values (status, statistics, ...).
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*
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* Unfortunately, the definitions required for this are not available through the usual windows header files,
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* but require the Windows "Device Driver Kit" which is not available for free :-(
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*
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* Fortunately, the definitions needed to access the various NDIS values are available from various OSS projects:
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* - WinPcap in Ntddndis.h
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* - Ndiswrapper in driver/ndis.h and driver/iw_ndis.h
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* - cygwin (MingW?) in usr/include/w32api/ddk/ndis.h and ntddndis.h
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* - FreeBSD (netperf)
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*/
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/* The MSDN description of the NDIS driver API is available at:
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/* MSDN Home > MSDN Library > Win32 and COM Development > Driver Development Kit > Network Devices and Protocols > Reference */
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/* "NDIS Objects" */
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/* http://msdn.microsoft.com/library/default.asp?url=/library/en-us/network/hh/network/21oidovw_d55042e5-0b8a-4439-8ef2-be7331e98464.xml.asp */
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/* Some more interesting links:
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* http://sourceforge.net/projects/ndiswrapper/
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* http://www.osronline.com/lists_archive/windbg/thread521.html
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* http://cvs.sourceforge.net/viewcvs.py/mingw/w32api/include/ddk/ndis.h?view=markup
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* http://cvs.sourceforge.net/viewcvs.py/mingw/w32api/include/ddk/ntddndis.h?view=markup
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*/
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/******************************************************************************************************************************/
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/* stuff to load WinPcap's packet.dll and the functions required from it */
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static PCHAR (*p_PacketGetVersion) (void);
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static LPADAPTER (*p_PacketOpenAdapter) (char *adaptername);
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static void (*p_PacketCloseAdapter) (LPADAPTER);
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static int (*p_PacketRequest) (LPADAPTER, int, void *);
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typedef struct {
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const char *name;
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gpointer *ptr;
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gboolean optional;
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} symbol_table_t;
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#define SYM(x, y) { STRINGIFY(x) , (gpointer) &CONCAT(p_,x), y }
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void
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wpcap_packet_load(void)
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{
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/* These are the symbols I need or want from packet.dll */
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static const symbol_table_t symbols[] = {
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SYM(PacketGetVersion, FALSE),
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SYM(PacketOpenAdapter, FALSE),
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SYM(PacketCloseAdapter, FALSE),
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SYM(PacketRequest, FALSE),
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{ NULL, NULL, FALSE }
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};
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GModule *wh; /* wpcap handle */
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const symbol_table_t *sym;
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wh = g_module_open("packet", 0);
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if (!wh) {
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return;
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}
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sym = symbols;
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while (sym->name) {
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if (!g_module_symbol(wh, sym->name, sym->ptr)) {
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if (sym->optional) {
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/*
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* We don't care if it's missing; we just
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* don't use it.
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*/
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*sym->ptr = NULL;
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} else {
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/*
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* We require this symbol.
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*/
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return;
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}
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}
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sym++;
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}
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has_wpacket = TRUE;
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}
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/******************************************************************************************************************************/
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/* functions to access the NDIS driver values */
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/* get dll version */
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char *
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wpcap_packet_get_version(void)
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{
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if(!has_wpacket) {
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return NULL;
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}
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return p_PacketGetVersion();
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}
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/* open the interface */
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void *
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wpcap_packet_open(char *if_name)
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{
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LPADAPTER adapter;
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g_assert(has_wpacket);
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adapter = p_PacketOpenAdapter(if_name);
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return adapter;
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}
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/* close the interface */
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void
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wpcap_packet_close(void *adapter)
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{
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g_assert(has_wpacket);
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p_PacketCloseAdapter(adapter);
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}
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/* do a packet request call */
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int
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wpcap_packet_request(void *adapter, ULONG Oid, int set, char *value, unsigned int *length)
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{
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BOOLEAN Status;
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ULONG IoCtlBufferLength=(sizeof(PACKET_OID_DATA) + (*length) - 1);
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PPACKET_OID_DATA OidData;
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g_assert(has_wpacket);
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if(p_PacketRequest == NULL) {
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g_warning("packet_request not available\n");
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return 0;
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}
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/* get a buffer suitable for PacketRequest() */
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OidData=GlobalAllocPtr(GMEM_MOVEABLE | GMEM_ZEROINIT,IoCtlBufferLength);
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if (OidData == NULL) {
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g_warning("GlobalAllocPtr failed for %u\n", IoCtlBufferLength);
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return 0;
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}
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OidData->Oid = Oid;
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OidData->Length = *length;
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memcpy(OidData->Data, value, *length);
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Status = p_PacketRequest(adapter, set, OidData);
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if(Status) {
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if(OidData->Length <= *length) {
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/* copy value from driver */
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memcpy(value, OidData->Data, OidData->Length);
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*length = OidData->Length;
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} else {
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/* the driver returned a value that is longer than expected (and longer than the given buffer) */
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g_warning("returned oid too long, Oid: 0x%x OidLen:%u MaxLen:%u", Oid, OidData->Length, *length);
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Status = FALSE;
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}
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}
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GlobalFreePtr (OidData);
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if(Status) {
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return 1;
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} else {
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return 0;
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}
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}
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/* get an UINT value using the packet request call */
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int
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wpcap_packet_request_uint(void *adapter, ULONG Oid, UINT *value)
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{
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BOOLEAN Status;
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int length = sizeof(UINT);
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Status = wpcap_packet_request(adapter, Oid, FALSE /* !set */, (char *) value, &length);
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if(Status && length == sizeof(UINT)) {
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return 1;
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} else {
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return 0;
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}
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}
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/* get an ULONG value using the NDIS packet request call */
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int
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wpcap_packet_request_ulong(void *adapter, ULONG Oid, ULONG *value)
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{
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BOOLEAN Status;
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int length = sizeof(ULONG);
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Status = wpcap_packet_request(adapter, Oid, FALSE /* !set */, (char *) value, &length);
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if(Status && length == sizeof(ULONG)) {
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return 1;
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} else {
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return 0;
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}
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}
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#else /* HAVE_LIBPCAP && _WIN32 */
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void
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wpcap_packet_load(void)
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{
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return;
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}
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#endif /* HAVE_LIBPCAP */
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/*
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* Editor modelines - http://www.wireshark.org/tools/modelines.html
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*
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* Local variables:
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* c-basic-offset: 4
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* tab-width: 4
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* indent-tabs-mode: tabs
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* End:
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*
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* ex: set shiftwidth=4 tabstop=4 noexpandtab
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* :indentSize=4:tabSize=4:noTabs=false:
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*/ |