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Remove the top-level AppleWin folder
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tomcw
@@ -0,0 +1,564 @@
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/*
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* tfearch.c - TFE ("The final ethernet") emulation,
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* architecture-dependant stuff
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*
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* Written by
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* Spiro Trikaliotis <Spiro.Trikaliotis@gmx.de>
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*
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* This file is part of VICE, the Versatile Commodore Emulator.
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* See README for copyright notice.
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*
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||||
* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (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
|
||||
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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* 02111-1307 USA.
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*
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*/
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/* #define WPCAP */
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#include "pcap.h"
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#include <assert.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "tfe.h"
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#include "tfearch.h"
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#include "tfesupp.h"
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typedef pcap_t *(*pcap_open_live_t)(const char *, int, int, int, char *);
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typedef int (*pcap_dispatch_t)(pcap_t *, int, pcap_handler, u_char *);
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typedef int (*pcap_setnonblock_t)(pcap_t *, int, char *);
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typedef int (*pcap_datalink_t)(pcap_t *);
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typedef int (*pcap_findalldevs_t)(pcap_if_t **, char *);
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typedef void (*pcap_freealldevs_t)(pcap_if_t *);
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typedef int (*pcap_sendpacket_t)(pcap_t *p, u_char *buf, int size);
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/** #define TFE_DEBUG_ARCH 1 **/
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/** #define TFE_DEBUG_PKTDUMP 1 **/
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/* #define TFE_DEBUG_FRAMES - might be defined in TFE.H! */
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#define TFE_DEBUG_WARN 1 /* this should not be deactivated */
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static pcap_open_live_t p_pcap_open_live;
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static pcap_dispatch_t p_pcap_dispatch;
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static pcap_setnonblock_t p_pcap_setnonblock;
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static pcap_findalldevs_t p_pcap_findalldevs;
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static pcap_freealldevs_t p_pcap_freealldevs;
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static pcap_sendpacket_t p_pcap_sendpacket;
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static pcap_datalink_t p_pcap_datalink;
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static HINSTANCE pcap_library = NULL;
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/* ------------------------------------------------------------------------- */
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/* variables needed */
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//static log_t g_fh = g_fh;
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static pcap_if_t *TfePcapNextDev = NULL;
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static pcap_if_t *TfePcapAlldevs = NULL;
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static pcap_t *TfePcapFP = NULL;
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static char TfePcapErrbuf[PCAP_ERRBUF_SIZE];
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#ifdef TFE_DEBUG_PKTDUMP
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static
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void debug_output( const char *text, BYTE *what, int count )
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{
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char buffer[256];
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char *p = buffer;
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char *pbuffer1 = what;
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int len1 = count;
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int i;
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sprintf(buffer, "\n%s: length = %u\n", text, len1);
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OutputDebugString(buffer);
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do {
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p = buffer;
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for (i=0; (i<8) && len1>0; len1--, i++) {
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sprintf( p, "%02x ", (unsigned int)(unsigned char)*pbuffer1++);
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p += 3;
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}
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*(p-1) = '\n'; *p = 0;
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OutputDebugString(buffer);
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} while (len1>0);
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}
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#endif // #ifdef TFE_DEBUG_PKTDUMP
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static
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void TfePcapFreeLibrary(void)
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{
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if (pcap_library) {
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if (!FreeLibrary(pcap_library)) {
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if(g_fh) fprintf(g_fh, "FreeLibrary WPCAP.DLL failed!\n");
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}
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pcap_library = NULL;
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p_pcap_open_live = NULL;
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p_pcap_dispatch = NULL;
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p_pcap_setnonblock = NULL;
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p_pcap_findalldevs = NULL;
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p_pcap_freealldevs = NULL;
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p_pcap_sendpacket = NULL;
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p_pcap_datalink = NULL;
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}
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}
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/* since I don't like typing too much... */
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#define GET_PROC_ADDRESS_AND_TEST( _name_ ) \
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p_##_name_ = (_name_##_t) GetProcAddress(pcap_library, #_name_ ); \
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if (!p_##_name_ ) { \
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if(g_fh) fprintf(g_fh, "GetProcAddress " #_name_ " failed!\n"); \
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TfePcapFreeLibrary(); \
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return FALSE; \
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}
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static
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BOOL TfePcapLoadLibrary(void)
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{
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if (!pcap_library) {
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pcap_library = LoadLibrary("wpcap.dll");
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if (!pcap_library) {
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if(g_fh) fprintf(g_fh, "LoadLibrary WPCAP.DLL failed!\n" );
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return FALSE;
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}
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GET_PROC_ADDRESS_AND_TEST(pcap_open_live);
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GET_PROC_ADDRESS_AND_TEST(pcap_dispatch);
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GET_PROC_ADDRESS_AND_TEST(pcap_setnonblock);
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GET_PROC_ADDRESS_AND_TEST(pcap_findalldevs);
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GET_PROC_ADDRESS_AND_TEST(pcap_freealldevs);
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GET_PROC_ADDRESS_AND_TEST(pcap_sendpacket);
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GET_PROC_ADDRESS_AND_TEST(pcap_datalink);
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}
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return TRUE;
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}
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#undef GET_PROC_ADDRESS_AND_TEST
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static
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void TfePcapCloseAdapter(void)
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{
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if (TfePcapAlldevs) {
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(*p_pcap_freealldevs)(TfePcapAlldevs);
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TfePcapAlldevs = NULL;
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}
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}
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/*
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These functions let the UI enumerate the available interfaces.
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First, TfeEnumAdapterOpen() is used to start enumeration.
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TfeEnumAdapter is then used to gather information for each adapter present
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on the system, where:
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ppname points to a pointer which will hold the name of the interface
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ppdescription points to a pointer which will hold the description of the interface
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For each of these parameters, new memory is allocated, so it has to be
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freed with lib_free().
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TfeEnumAdapterClose() must be used to stop processing.
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Each function returns 1 on success, and 0 on failure.
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TfeEnumAdapter() only fails if there is no more adpater; in this case,
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*ppname and *ppdescription are not altered.
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*/
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int tfe_arch_enumadapter_open(void)
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{
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if (!TfePcapLoadLibrary()) {
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return 0;
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}
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if ((*p_pcap_findalldevs)(&TfePcapAlldevs, TfePcapErrbuf) == -1)
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{
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if(g_fh) fprintf(g_fh, "ERROR in TfeEnumAdapterOpen: pcap_findalldevs: '%s'", TfePcapErrbuf);
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return 0;
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}
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if (!TfePcapAlldevs) {
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if(g_fh) fprintf(g_fh, "ERROR in TfeEnumAdapterOpen, finding all pcap devices - "
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"Do we have the necessary privilege rights?");
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return 0;
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}
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TfePcapNextDev = TfePcapAlldevs;
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return 1;
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}
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int tfe_arch_enumadapter(char **ppname, char **ppdescription)
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{
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if (!TfePcapNextDev)
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return 0;
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*ppname = lib_stralloc(TfePcapNextDev->name);
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*ppdescription = lib_stralloc(TfePcapNextDev->description);
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TfePcapNextDev = TfePcapNextDev->next;
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return 1;
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}
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int tfe_arch_enumadapter_close(void)
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{
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if (TfePcapAlldevs) {
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(*p_pcap_freealldevs)(TfePcapAlldevs);
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TfePcapAlldevs = NULL;
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}
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return 1;
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}
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static
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BOOL TfePcapOpenAdapter(const char *interface_name)
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{
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pcap_if_t *TfePcapDevice = NULL;
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if (!tfe_enumadapter_open()) {
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return FALSE;
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}
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else {
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/* look if we can find the specified adapter */
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char *pname;
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char *pdescription;
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BOOL found = FALSE;
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if (interface_name) {
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/* we have an interface name, try it */
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TfePcapDevice = TfePcapAlldevs;
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while (tfe_enumadapter(&pname, &pdescription)) {
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if (strcmp(pname, interface_name)==0) {
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found = TRUE;
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}
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lib_free(pname);
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lib_free(pdescription);
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if (found) break;
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TfePcapDevice = TfePcapNextDev;
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}
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}
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if (!found) {
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/* just take the first adapter */
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TfePcapDevice = TfePcapAlldevs;
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}
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}
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TfePcapFP = (*p_pcap_open_live)(TfePcapDevice->name, 1700, 1, 20, TfePcapErrbuf);
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if ( TfePcapFP == NULL)
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{
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if(g_fh) fprintf(g_fh, "ERROR opening adapter: '%s'", TfePcapErrbuf);
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tfe_enumadapter_close();
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return FALSE;
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}
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if ((*p_pcap_setnonblock)(TfePcapFP, 1, TfePcapErrbuf)<0)
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{
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if(g_fh) fprintf(g_fh, "WARNING: Setting PCAP to non-blocking failed: '%s'", TfePcapErrbuf);
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}
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/* Check the link layer. We support only Ethernet for simplicity. */
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if((*p_pcap_datalink)(TfePcapFP) != DLT_EN10MB)
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{
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if(g_fh) fprintf(g_fh, "ERROR: TFE works only on Ethernet networks.");
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tfe_enumadapter_close();
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return FALSE;
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}
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tfe_enumadapter_close();
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return TRUE;
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}
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/* ------------------------------------------------------------------------- */
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/* the architecture-dependend functions */
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int tfe_arch_init(void)
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{
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// g_fh = log_open("TFEARCH");
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if (!TfePcapLoadLibrary()) {
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return 0;
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}
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return 1;
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}
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void tfe_arch_pre_reset( void )
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{
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#ifdef TFE_DEBUG_ARCH
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if(g_fh) fprintf( g_fh, "tfe_arch_pre_reset()." );
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#endif
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}
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void tfe_arch_post_reset( void )
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{
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#ifdef TFE_DEBUG_ARCH
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if(g_fh) fprintf( g_fh, "tfe_arch_post_reset()." );
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#endif
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}
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int tfe_arch_activate(const char *interface_name)
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{
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#ifdef TFE_DEBUG_ARCH
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if(g_fh) fprintf( g_fh, "tfe_arch_activate()." );
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#endif
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if (!TfePcapOpenAdapter(interface_name)) {
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return 0;
|
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}
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return 1;
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}
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|
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void tfe_arch_deactivate( void )
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{
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#ifdef TFE_DEBUG_ARCH
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if(g_fh) fprintf( g_fh, "tfe_arch_deactivate()." );
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||||
#endif
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||||
}
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||||
void tfe_arch_set_mac( const BYTE mac[6] )
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||||
{
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||||
#if defined(TFE_DEBUG_ARCH) || defined(TFE_DEBUG_FRAMES)
|
||||
if(g_fh) fprintf( g_fh, "New MAC address set: %02X:%02X:%02X:%02X:%02X:%02X.",
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mac[0], mac[1], mac[2], mac[3], mac[4], mac[5] );
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#endif
|
||||
}
|
||||
|
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void tfe_arch_set_hashfilter(const DWORD hash_mask[2])
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{
|
||||
#if defined(TFE_DEBUG_ARCH) || defined(TFE_DEBUG_FRAMES)
|
||||
if(g_fh) fprintf( g_fh, "New hash filter set: %08X:%08X.",
|
||||
hash_mask[1], hash_mask[0]);
|
||||
#endif
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
void tfe_arch_receive_remove_committed_frame(void)
|
||||
{
|
||||
#ifdef TFE_DEBUG_ARCH
|
||||
if(g_fh) fprintf( g_fh, "tfe_arch_receive_remove_committed_frame()." );
|
||||
#endif
|
||||
}
|
||||
*/
|
||||
|
||||
void tfe_arch_recv_ctl( int bBroadcast, /* broadcast */
|
||||
int bIA, /* individual address (IA) */
|
||||
int bMulticast, /* multicast if address passes the hash filter */
|
||||
int bCorrect, /* accept correct frames */
|
||||
int bPromiscuous, /* promiscuous mode */
|
||||
int bIAHash /* accept if IA passes the hash filter */
|
||||
)
|
||||
{
|
||||
#if defined(TFE_DEBUG_ARCH) || defined(TFE_DEBUG_FRAMES)
|
||||
if(g_fh) {
|
||||
fprintf( g_fh, "tfe_arch_recv_ctl() called with the following parameters:" );
|
||||
fprintf( g_fh, "\tbBroadcast = %s", bBroadcast ? "TRUE" : "FALSE" );
|
||||
fprintf( g_fh, "\tbIA = %s", bIA ? "TRUE" : "FALSE" );
|
||||
fprintf( g_fh, "\tbMulticast = %s", bMulticast ? "TRUE" : "FALSE" );
|
||||
fprintf( g_fh, "\tbCorrect = %s", bCorrect ? "TRUE" : "FALSE" );
|
||||
fprintf( g_fh, "\tbPromiscuous = %s", bPromiscuous ? "TRUE" : "FALSE" );
|
||||
fprintf( g_fh, "\tbIAHash = %s", bIAHash ? "TRUE" : "FALSE" );
|
||||
}
|
||||
#endif
|
||||
}
|
||||
|
||||
void tfe_arch_line_ctl(int bEnableTransmitter, int bEnableReceiver )
|
||||
{
|
||||
#if defined(TFE_DEBUG_ARCH) || defined(TFE_DEBUG_FRAMES)
|
||||
if(g_fh) {
|
||||
fprintf( g_fh, "tfe_arch_line_ctl() called with the following parameters:" );
|
||||
fprintf( g_fh, "\tbEnableTransmitter = %s", bEnableTransmitter ? "TRUE" : "FALSE" );
|
||||
fprintf( g_fh, "\tbEnableReceiver = %s", bEnableReceiver ? "TRUE" : "FALSE" );
|
||||
}
|
||||
#endif
|
||||
}
|
||||
|
||||
|
||||
typedef struct TFE_PCAP_INTERNAL_tag {
|
||||
|
||||
unsigned int len;
|
||||
BYTE *buffer;
|
||||
|
||||
} TFE_PCAP_INTERNAL;
|
||||
|
||||
/* Callback function invoked by libpcap for every incoming packet */
|
||||
static
|
||||
void TfePcapPacketHandler(u_char *param, const struct pcap_pkthdr *header, const u_char *pkt_data)
|
||||
{
|
||||
/* RGJ changed from void to TFE_PCAP_INTERNAL for AppleWin */
|
||||
TFE_PCAP_INTERNAL *pinternal = (TFE_PCAP_INTERNAL *)param;
|
||||
|
||||
/* determine the count of bytes which has been returned,
|
||||
* but make sure not to overrun the buffer
|
||||
*/
|
||||
if (header->caplen < pinternal->len)
|
||||
pinternal->len = header->caplen;
|
||||
|
||||
memcpy(pinternal->buffer, pkt_data, pinternal->len);
|
||||
}
|
||||
|
||||
/* the following function receives a frame.
|
||||
|
||||
If there's none, it returns a -1.
|
||||
If there is one, it returns the length of the frame in bytes.
|
||||
|
||||
It copies the frame to *buffer and returns the number of copied
|
||||
bytes as return value.
|
||||
|
||||
At most 'len' bytes are copied.
|
||||
*/
|
||||
static
|
||||
int tfe_arch_receive_frame(TFE_PCAP_INTERNAL *pinternal)
|
||||
{
|
||||
int ret = -1;
|
||||
|
||||
/* check if there is something to receive */
|
||||
/* RGJ changed from void to u_char for AppleWin */
|
||||
if ((*p_pcap_dispatch)(TfePcapFP, 1, TfePcapPacketHandler, (u_char *)pinternal)!=0) {
|
||||
/* Something has been received */
|
||||
ret = pinternal->len;
|
||||
}
|
||||
|
||||
#ifdef TFE_DEBUG_ARCH
|
||||
if(g_fh) fprintf( g_fh, "tfe_arch_receive_frame() called, returns %d.", ret );
|
||||
#endif
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
void tfe_arch_transmit(int force, /* FORCE: Delete waiting frames in transmit buffer */
|
||||
int onecoll, /* ONECOLL: Terminate after just one collision */
|
||||
int inhibit_crc, /* INHIBITCRC: Do not append CRC to the transmission */
|
||||
int tx_pad_dis, /* TXPADDIS: Disable padding to 60 Bytes */
|
||||
int txlength, /* Frame length */
|
||||
BYTE *txframe /* Pointer to the frame to be transmitted */
|
||||
)
|
||||
{
|
||||
#ifdef TFE_DEBUG_ARCH
|
||||
if(g_fh) fprintf( g_fh, "tfe_arch_transmit() called, with: "
|
||||
"force = %s, onecoll = %s, inhibit_crc=%s, tx_pad_dis=%s, txlength=%u",
|
||||
force ? "TRUE" : "FALSE",
|
||||
onecoll ? "TRUE" : "FALSE",
|
||||
inhibit_crc ? "TRUE" : "FALSE",
|
||||
tx_pad_dis ? "TRUE" : "FALSE",
|
||||
txlength
|
||||
);
|
||||
#endif
|
||||
|
||||
#ifdef TFE_DEBUG_PKTDUMP
|
||||
debug_output( "Transmit frame: ", txframe, txlength);
|
||||
#endif // #ifdef TFE_DEBUG_PKTDUMP
|
||||
|
||||
if ((*p_pcap_sendpacket)(TfePcapFP, txframe, txlength) == -1) {
|
||||
if(g_fh) fprintf(g_fh, "WARNING! Could not send packet!");
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
tfe_arch_receive()
|
||||
|
||||
This function checks if there was a frame received.
|
||||
If so, it returns 1, else 0.
|
||||
|
||||
If there was no frame, none of the parameters is changed!
|
||||
|
||||
If there was a frame, the following actions are done:
|
||||
|
||||
- at maximum *plen byte are transferred into the buffer given by pbuffer
|
||||
- *plen gets the length of the received frame, EVEN if this is more
|
||||
than has been copied to pbuffer!
|
||||
- if the dest. address was accepted by the hash filter, *phashed is set, else
|
||||
cleared.
|
||||
- if the dest. address was accepted by the hash filter, *phash_index is
|
||||
set to the number of the rule leading to the acceptance
|
||||
- if the receive was ok (good CRC and valid length), *prx_ok is set,
|
||||
else cleared.
|
||||
- if the dest. address was accepted because it's exactly our MAC address
|
||||
(set by tfe_arch_set_mac()), *pcorrect_mac is set, else cleared.
|
||||
- if the dest. address was accepted since it was a broadcast address,
|
||||
*pbroadcast is set, else cleared.
|
||||
- if the received frame had a crc error, *pcrc_error is set, else cleared
|
||||
*/
|
||||
int tfe_arch_receive(BYTE *pbuffer , /* where to store a frame */
|
||||
int *plen, /* IN: maximum length of frame to copy;
|
||||
OUT: length of received frame
|
||||
OUT can be bigger than IN if received frame was
|
||||
longer than supplied buffer */
|
||||
int *phashed, /* set if the dest. address is accepted by the hash filter */
|
||||
int *phash_index, /* hash table index if hashed == TRUE */
|
||||
int *prx_ok, /* set if good CRC and valid length */
|
||||
int *pcorrect_mac, /* set if dest. address is exactly our IA */
|
||||
int *pbroadcast, /* set if dest. address is a broadcast address */
|
||||
int *pcrc_error /* set if received frame had a CRC error */
|
||||
)
|
||||
{
|
||||
int len;
|
||||
|
||||
TFE_PCAP_INTERNAL internal = { *plen, pbuffer };
|
||||
|
||||
|
||||
#ifdef TFE_DEBUG_ARCH
|
||||
if(g_fh) fprintf( g_fh, "tfe_arch_receive() called, with *plen=%u.", *plen );
|
||||
#endif
|
||||
|
||||
assert((*plen&1)==0);
|
||||
|
||||
len = tfe_arch_receive_frame(&internal);
|
||||
|
||||
if (len!=-1) {
|
||||
|
||||
#ifdef TFE_DEBUG_PKTDUMP
|
||||
debug_output( "Received frame: ", internal.buffer, internal.len );
|
||||
#endif // #ifdef TFE_DEBUG_PKTDUMP
|
||||
|
||||
if (len&1)
|
||||
++len;
|
||||
|
||||
*plen = len;
|
||||
|
||||
/* we don't decide if this frame fits the needs;
|
||||
* by setting all zero, we let tfe.c do the work
|
||||
* for us
|
||||
*/
|
||||
*phashed =
|
||||
*phash_index =
|
||||
*pbroadcast =
|
||||
*pcorrect_mac =
|
||||
*pcrc_error = 0;
|
||||
|
||||
/* this frame has been received correctly */
|
||||
*prx_ok = 1;
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
//#endif /* #ifdef HAVE_TFE */
|
||||
Reference in New Issue
Block a user