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wireshark/wiretap/k12.c

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/*
* k12.c
*
* routines for importing tektronix k12xx *.rf5 files
*
* Copyright (c) 2005, Luis E. Garia Ontanon <luis@ontanon.org>
*
* $Id$
*
* Wiretap Library
* Copyright (c) 1998 by Gilbert Ramirez <gram@alumni.rice.edu>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include "wtap-int.h"
#include "wtap.h"
#include "file_wrappers.h"
#include "buffer.h"
#include "k12.h"
#include <wsutil/str_util.h>
/*
* See
*
* http://www2.tek.com/cmswpt/madownload.lotr?ct=MA&cs=mpm&ci=11284&lc=EN
*
* for some information about the file format. You may have to fill in
* a form to download the document ("Recored File API Programmer Manual").
*
* Unfortunately, it describes an API that delivers records from an rf5
* file, not the raw format of an rf5 file, so, while it gives the formats
* of the records with various types, it does not indicate how those records
* are stored in the file.
*/
/* #define DEBUG_K12 */
#ifdef DEBUG_K12
#include <stdio.h>
#include <ctype.h>
#include <stdarg.h>
#include <wsutil/file_util.h>
FILE* dbg_out = NULL;
char* env_file = NULL;
static unsigned debug_level = 0;
void k12_fprintf(char* fmt, ...) {
va_list ap;
va_start(ap,fmt);
vfprintf(dbg_out, fmt, ap);
va_end(ap);
}
#define CAT(a,b) a##b
#define K12_DBG(level,args) do { if (level <= debug_level) { \
fprintf(dbg_out,"%s:%d: ",CAT(__FI,LE__),CAT(__LI,NE__)); \
k12_fprintf args ; \
fprintf(dbg_out,"\n"); \
} } while(0)
void k12_hexdump(guint level, gint64 offset, char* label, unsigned char* b, unsigned len) {
static const char* c2t[] = {
"00","01","02","03","04","05","06","07","08","09","0a","0b","0c","0d","0e","0f",
"10","11","12","13","14","15","16","17","18","19","1a","1b","1c","1d","1e","1f",
"20","21","22","23","24","25","26","27","28","29","2a","2b","2c","2d","2e","2f",
"30","31","32","33","34","35","36","37","38","39","3a","3b","3c","3d","3e","3f",
"40","41","42","43","44","45","46","47","48","49","4a","4b","4c","4d","4e","4f",
"50","51","52","53","54","55","56","57","58","59","5a","5b","5c","5d","5e","5f",
"60","61","62","63","64","65","66","67","68","69","6a","6b","6c","6d","6e","6f",
"70","71","72","73","74","75","76","77","78","79","7a","7b","7c","7d","7e","7f",
"80","81","82","83","84","85","86","87","88","89","8a","8b","8c","8d","8e","8f",
"90","91","92","93","94","95","96","97","98","99","9a","9b","9c","9d","9e","9f",
"a0","a1","a2","a3","a4","a5","a6","a7","a8","a9","aa","ab","ac","ad","ae","af",
"b0","b1","b2","b3","b4","b5","b6","b7","b8","b9","ba","bb","bc","bd","be","bf",
"c0","c1","c2","c3","c4","c5","c6","c7","c8","c9","ca","cb","cc","cd","ce","cf",
"d0","d1","d2","d3","d4","d5","d6","d7","d8","d9","da","db","dc","dd","de","df",
"e0","e1","e2","e3","e4","e5","e6","e7","e8","e9","ea","eb","ec","ed","ee","ef",
"f0","f1","f2","f3","f4","f5","f6","f7","f8","f9","fa","fb","fc","fd","fe","ff"
};
unsigned i;
if (debug_level < level) return;
fprintf(dbg_out,"%s(%.8" G_GINT64_MODIFIER "x,%.4x): ",label,offset,len);
for (i=0 ; i<len ; i++) {
if (!(i%32))
fprintf(dbg_out,"\n");
else if (!(i%4))
fprintf(dbg_out," ");
fprintf(dbg_out, "%s", c2t[b[i]]);
}
fprintf(dbg_out,"\n");
}
#define K12_HEXDMP(x,a,b,c,d) k12_hexdump(x,a,b,c,d)
#else
#define K12_DBG(level,args) (void)0
#define K12_HEXDMP(x,a,b,c,d)
#endif
/*
* the 32 bits .rf5 file contains:
* an 8 byte magic number
* 32bit length
* 32bit number of records
* other 0x200 bytes bytes of uncharted territory
* 1 or more copies of the num_of_records in there
* the records whose first 32bits word is the length
* they are stuffed by one to four words every 0x2000 bytes
* and a 2 byte terminator FFFF
*/
static const guint8 k12_file_magic[] = { 0x00, 0x00, 0x02, 0x00 ,0x12, 0x05, 0x00, 0x10 };
typedef struct {
guint32 file_len;
guint32 num_of_records; /* XXX: not sure about this */
GHashTable* src_by_id; /* k12_srcdsc_recs by input */
GHashTable* src_by_name; /* k12_srcdsc_recs by stack_name */
Buffer extra_info; /* Buffer to hold per packet extra information */
} k12_t;
typedef struct _k12_src_desc_t {
guint32 input;
guint32 input_type;
gchar* input_name;
gchar* stack_file;
k12_input_info_t input_info;
} k12_src_desc_t;
/*
* According to the Tektronix documentation, this value is a combination of
* a "group" code and a "type" code, with both being 2-byte values and
* with the "group" code followe by the "type" code. The "group" values
* are:
*
* 0x0001 - "data event"
* 0x0002 - "text or L1 event"
* 0x0007 - "configuration event"
*
* and the "type" values are:
*
* data events:
* 0x0020 - "frame" (i.e., "an actual packet")
* 0x0021 - "transparent frame"
* 0x0022 - "bit data (TRAU frame)"
* 0x0024 - "used to mark the frame which is a fragment"
* 0x0026 - "used to mark the frame which is a fragment"
* 0x0028 - "used to mark the frame which is generated by the LSA"
* 0x002A - "used to mark the frame which is generated by the LSA"
*
* text or L1 events:
* 0x0030 - "text event"
* 0x0031 - "L1 event"
* 0x0032 - "L1 event (BAI)"
* 0x0033 - "L1 event (VX)"
*
* configuration events:
* 0x0040 - Logical Data Source configuration event
* 0x0041 - Logical Link configuration event
*/
/* so far we've seen these types of records */
#define K12_REC_PACKET 0x00010020 /* an actual packet */
#define K12_REC_SRCDSC 0x00070041 /* port-stack mapping + more, the key of the whole thing */
#define K12_REC_SCENARIO 0x00070040 /* what appears as the window's title */
#define K12_REC_STK_FILE 0x00070042 /* a dump of an stk file */
#define K12_REC_SRCDSC2 0x00070043 /* another port-stack mapping */
#define K12_REC_TEXT 0x00070044 /* a string containing something with a grammar (conditions/responses?) */
#define K12_REC_START 0x00020030 /* a string containing human readable start time */
#define K12_REC_STOP 0x00020031 /* a string containing human readable stop time */
/*
* According to the Tektronix documentation, packets, i.e. "data events",
* have several different group/type values, which differ in the last
* nibble of the type code. For now, we just mask that nibble off; the
* format of the items are different, so we might have to treat different
* data event types differently.
*/
#define K12_MASK_PACKET 0xfffffff0
/* offsets of elements in the records */
#define K12_RECORD_LEN 0x0 /* uint32, in bytes */
#define K12_RECORD_TYPE 0x4 /* uint32, see above */
#define K12_RECORD_FRAME_LEN 0x8 /* uint32, in bytes */
#define K12_RECORD_SRC_ID 0xc /* uint32 */
/*
* Some records from K15 files have a port ID of an undeclared
* interface which happens to be the only one with the first byte changed.
* It is still unknown how to recognize when this happens.
* If the lookup of the interface record fails we'll mask it
* and retry.
*/
#define K12_RECORD_SRC_ID_MASK 0x00ffffff
/* elements of packet records */
#define K12_PACKET_TIMESTAMP 0x18 /* int64 (8b) representing 1/2us since 01-01-1990 Z00:00:00 */
#define K12_PACKET_FRAME 0x20 /* start of the actual frame in the record */
#define K12_PACKET_OFFSET_VP 0x08 /* 2 bytes, big endian */
#define K12_PACKET_OFFSET_VC 0x0a /* 2 bytes, big endian */
#define K12_PACKET_OFFSET_CID 0x0c /* 1 byte */
/* elements of the source description records */
#define K12_SRCDESC_COLOR_FOREGROUND 0x12 /* 1 byte */
#define K12_SRCDESC_COLOR_BACKGROUND 0x13 /* 1 byte */
#define K12_SRCDESC_PORT_TYPE 0x1a /* 1 byte */
#define K12_SRCDESC_EXTRALEN 0x1e /* uint16, big endian */
#define K12_SRCDESC_NAMELEN 0x20 /* uint16, big endian */
#define K12_SRCDESC_STACKLEN 0x22 /* uint16, big endian */
#define K12_SRCDESC_EXTRATYPE 0x24 /* uint32, big endian */
#define K12_SRCDESC_ATM_VPI 0x38 /* uint16, big endian */
#define K12_SRCDESC_ATM_VCI 0x3a /* uint16, big endian */
#define K12_SRCDESC_ATM_AAL 0x3c /* 1 byte */
#define K12_SRCDESC_DS0_MASK 0x3c /* 1 byte */
/*
* get_record: Get the next record into a buffer
* Every about 0x2000 bytes 0x10 bytes are inserted in the file,
* even in the middle of a record.
* This reads the next record without the eventual 0x10 bytes.
* returns the length of the record + the stuffing (if any)
*
* Returns number of bytes read on success, 0 on EOF, -1 on error;
* if -1 is returned, *err is set to the error indication and, for
* errors where that's appropriate, *err_info is set to an additional
* error string.
*
* XXX: works at most with 0x1FFF bytes per record
*/
static gint get_record(guint8** bufferp, FILE_T fh, gint64 file_offset,
int *err, gchar **err_info) {
static guint8* buffer = NULL;
static guint buffer_len = 0x2000 ;
guint bytes_read;
guint last_read;
guint left;
guint8 junk[0x14];
guint8* writep;
#ifdef DEBUG_K12
guint actual_len;
#endif
/* where the next unknown 0x10 bytes are stuffed to the file */
guint junky_offset = 0x2000 - (gint) ( (file_offset - 0x200) % 0x2000 );
K12_DBG(6,("get_record: ENTER: junky_offset=%" G_GINT64_MODIFIER "d, file_offset=%" G_GINT64_MODIFIER "d",junky_offset,file_offset));
/* no buffer is given, lets create it */
if (buffer == NULL) {
buffer = (guint8*)g_malloc(0x2000);
buffer_len = 0x2000;
}
*bufferp = buffer;
if ( junky_offset == 0x2000 ) {
/* the length of the record is 0x10 bytes ahead from we are reading */
bytes_read = file_read(junk,0x14,fh);
if (bytes_read == 2 && junk[0] == 0xff && junk[1] == 0xff) {
K12_DBG(1,("get_record: EOF"));
return 0;
} else if ( bytes_read < 0x14 ){
K12_DBG(1,("get_record: SHORT READ OR ERROR"));
*err = file_error(fh, err_info);
if (*err == 0) {
*err = WTAP_ERR_SHORT_READ;
}
return -1;
}
memcpy(buffer,&(junk[0x10]),4);
} else {
/* the length of the record is right where we are reading */
bytes_read = file_read(buffer, 0x4, fh);
if (bytes_read == 2 && buffer[0] == 0xff && buffer[1] == 0xff) {
K12_DBG(1,("get_record: EOF"));
return 0;
} else if ( bytes_read != 0x4 ) {
K12_DBG(1,("get_record: SHORT READ OR ERROR"));
*err = file_error(fh, err_info);
if (*err == 0) {
*err = WTAP_ERR_SHORT_READ;
}
return -1;
}
}
left = pntohl(buffer);
#ifdef DEBUG_K12
actual_len = left;
#endif
junky_offset -= 0x4;
K12_DBG(5,("get_record: GET length=%u",left));
/* XXX - Is WTAP_MAX_PACKET_SIZE */
if (left < 4 || left > WTAP_MAX_PACKET_SIZE) {
K12_DBG(1,("get_record: Invalid GET length=%u",left));
*err = WTAP_ERR_BAD_FILE;
*err_info = g_strdup_printf("get_record: Invalid GET length=%u",left);
return -1;
}
while (left > buffer_len) *bufferp = buffer = (guint8*)g_realloc(buffer,buffer_len*=2);
writep = buffer + 4;
left -= 4;
do {
K12_DBG(6,("get_record: looping left=%d junky_offset=%" G_GINT64_MODIFIER "d",left,junky_offset));
if (junky_offset > left) {
bytes_read += last_read = file_read(writep, left, fh);
if ( last_read != left ) {
K12_DBG(1,("get_record: SHORT READ OR ERROR"));
*err = file_error(fh, err_info);
if (*err == 0) {
*err = WTAP_ERR_SHORT_READ;
}
return -1;
} else {
K12_HEXDMP(5,file_offset, "GOT record", buffer, actual_len);
return bytes_read;
}
} else {
bytes_read += last_read = file_read(writep, junky_offset, fh);
if ( last_read != junky_offset ) {
K12_DBG(1,("get_record: SHORT READ OR ERROR, read=%d expected=%d",last_read, junky_offset));
*err = file_error(fh, err_info);
if (*err == 0) {
*err = WTAP_ERR_SHORT_READ;
}
return -1;
}
writep += last_read;
bytes_read += last_read = file_read(junk, 0x10, fh);
if ( last_read != 0x10 ) {
K12_DBG(1,("get_record: SHORT READ OR ERROR"));
*err = file_error(fh, err_info);
if (*err == 0) {
*err = WTAP_ERR_SHORT_READ;
}
return -1;
}
left -= junky_offset;
junky_offset = 0x2000;
}
} while(left);
K12_HEXDMP(5,file_offset, "GOT record", buffer, actual_len);
return bytes_read;
}
static gboolean k12_read(wtap *wth, int *err, gchar **err_info, gint64 *data_offset) {
k12_t *k12 = (k12_t *)wth->priv;
k12_src_desc_t* src_desc;
guint8* buffer = NULL;
gint64 offset;
gint len;
guint32 type;
guint32 src_id;
guint64 ts;
guint32 extra_len;
offset = file_tell(wth->fh);
/* ignore the record if it isn't a packet */
do {
K12_DBG(5,("k12_read: offset=%i",offset));
*data_offset = offset;
len = get_record(&buffer, wth->fh, offset, err, err_info);
if (len < 0) {
return FALSE;
} else if (len == 0) {
*err = 0;
return FALSE;
}
type = pntohl(buffer + K12_RECORD_TYPE);
src_id = pntohl(buffer + K12_RECORD_SRC_ID);
if ( ! (src_desc = (k12_src_desc_t*)g_hash_table_lookup(k12->src_by_id,GUINT_TO_POINTER(src_id))) ) {
/*
* Some records from K15 files have a port ID of an undeclared
* interface which happens to be the only one with the first byte changed.
* It is still unknown how to recognize when this happens.
* If the lookup of the interface record fails we'll mask it
* and retry.
*/
src_desc = (k12_src_desc_t*)g_hash_table_lookup(k12->src_by_id,GUINT_TO_POINTER(src_id&K12_RECORD_SRC_ID_MASK));
}
K12_DBG(5,("k12_read: record type=%x src_id=%x",type,src_id));
offset += len;
} while ( ((type & K12_MASK_PACKET) != K12_REC_PACKET) || !src_id || !src_desc );
wth->phdr.presence_flags = WTAP_HAS_TS;
ts = pntohll(buffer + K12_PACKET_TIMESTAMP);
wth->phdr.ts.secs = (guint32) ((ts / 2000000) + 631152000);
wth->phdr.ts.nsecs = (guint32) ( (ts % 2000000) * 500 );
K12_DBG(3,("k12_read: PACKET RECORD type=%x src_id=%x secs=%u nsecs=%u",type,src_id, wth->phdr.ts.secs,wth->phdr.ts.nsecs));
wth->phdr.len = wth->phdr.caplen = pntohl(buffer + K12_RECORD_FRAME_LEN) & 0x00001FFF;
extra_len = len - K12_PACKET_FRAME - wth->phdr.caplen;
/* the frame */
buffer_assure_space(wth->frame_buffer, wth->phdr.caplen);
memcpy(buffer_start_ptr(wth->frame_buffer), buffer + K12_PACKET_FRAME, wth->phdr.caplen);
/* extra information need by some protocols */
buffer_assure_space(&(k12->extra_info), extra_len);
memcpy(buffer_start_ptr(&(k12->extra_info)),
buffer + K12_PACKET_FRAME + wth->phdr.caplen, extra_len);
wth->pseudo_header.k12.extra_info = (void*)buffer_start_ptr(&(k12->extra_info));
wth->pseudo_header.k12.extra_length = extra_len;
wth->pseudo_header.k12.input = src_id;
K12_DBG(5,("k12_read: wth->pseudo_header.k12.input=%x wth->phdr.len=%i input_name='%s' stack_file='%s' type=%x",
wth->pseudo_header.k12.input,wth->phdr.len,src_desc->input_name,src_desc->stack_file,src_desc->input_type));\
wth->pseudo_header.k12.input_name = src_desc->input_name;
wth->pseudo_header.k12.stack_file = src_desc->stack_file;
wth->pseudo_header.k12.input_type = src_desc->input_type;
switch(src_desc->input_type) {
case K12_PORT_ATMPVC:
if ((long)(K12_PACKET_FRAME + wth->phdr.len + K12_PACKET_OFFSET_CID) < len) {
wth->pseudo_header.k12.input_info.atm.vp = pntohs(buffer + (K12_PACKET_FRAME + wth->phdr.caplen + K12_PACKET_OFFSET_VP));
wth->pseudo_header.k12.input_info.atm.vc = pntohs(buffer + (K12_PACKET_FRAME + wth->phdr.caplen + K12_PACKET_OFFSET_VC));
wth->pseudo_header.k12.input_info.atm.cid = *((unsigned char*)(buffer + K12_PACKET_FRAME + wth->phdr.len + K12_PACKET_OFFSET_CID));
break;
}
/* Fall through */
default:
memcpy(&(wth->pseudo_header.k12.input_info),&(src_desc->input_info),sizeof(src_desc->input_info));
break;
}
wth->pseudo_header.k12.stuff = k12;
return TRUE;
}
static gboolean k12_seek_read(wtap *wth, gint64 seek_off, union wtap_pseudo_header *pseudo_header, guint8 *pd, int length, int *err _U_, gchar **err_info) {
k12_t *k12 = (k12_t *)wth->priv;
k12_src_desc_t* src_desc;
guint8* buffer;
gint len;
guint32 extra_len;
guint32 input;
K12_DBG(5,("k12_seek_read: ENTER"));
if ( file_seek(wth->random_fh, seek_off, SEEK_SET, err) == -1) {
K12_DBG(5,("k12_seek_read: SEEK ERROR"));
return FALSE;
}
len = get_record(&buffer, wth->random_fh, seek_off, err, err_info);
if (len < 0) {
K12_DBG(5,("k12_seek_read: READ ERROR"));
return FALSE;
}
if (len < 1) {
K12_DBG(5,("k12_seek_read: SHORT READ"));
*err = WTAP_ERR_SHORT_READ;
return FALSE;
}
memcpy(pd, buffer + K12_PACKET_FRAME, length);
extra_len = len - K12_PACKET_FRAME - length;
buffer_assure_space(&(k12->extra_info), extra_len);
memcpy(buffer_start_ptr(&(k12->extra_info)),
buffer + K12_PACKET_FRAME + length, extra_len);
wth->pseudo_header.k12.extra_info = (void*)buffer_start_ptr(&(k12->extra_info));
wth->pseudo_header.k12.extra_length = extra_len;
if (pseudo_header) {
pseudo_header->k12.extra_info = (void*)buffer_start_ptr(&(k12->extra_info));
pseudo_header->k12.extra_length = extra_len;
}
input = pntohl(buffer + K12_RECORD_SRC_ID);
K12_DBG(5,("k12_seek_read: input=%.8x",input));
if ( ! (src_desc = (k12_src_desc_t*)g_hash_table_lookup(k12->src_by_id,GUINT_TO_POINTER(input))) ) {
/*
* Some records from K15 files have a port ID of an undeclared
* interface which happens to be the only one with the first byte changed.
* It is still unknown how to recognize when this happens.
* If the lookup of the interface record fails we'll mask it
* and retry.
*/
src_desc = (k12_src_desc_t*)g_hash_table_lookup(k12->src_by_id,GUINT_TO_POINTER(input&K12_RECORD_SRC_ID_MASK));
}
if (src_desc) {
K12_DBG(5,("k12_seek_read: input_name='%s' stack_file='%s' type=%x",src_desc->input_name,src_desc->stack_file,src_desc->input_type));
if (pseudo_header) {
pseudo_header->k12.input_name = src_desc->input_name;
pseudo_header->k12.stack_file = src_desc->stack_file;
pseudo_header->k12.input_type = src_desc->input_type;
switch(src_desc->input_type) {
case K12_PORT_ATMPVC:
if ((long)(K12_PACKET_FRAME + length + K12_PACKET_OFFSET_CID) < len) {
pseudo_header->k12.input_info.atm.vp = pntohs(buffer + K12_PACKET_FRAME + length + K12_PACKET_OFFSET_VP);
pseudo_header->k12.input_info.atm.vc = pntohs(buffer + K12_PACKET_FRAME + length + K12_PACKET_OFFSET_VC);
pseudo_header->k12.input_info.atm.cid = *((unsigned char*)(buffer + K12_PACKET_FRAME + length + K12_PACKET_OFFSET_CID));
break;
}
/* Fall through */
default:
memcpy(&(pseudo_header->k12.input_info),&(src_desc->input_info),sizeof(src_desc->input_info));
break;
}
}
wth->pseudo_header.k12.input_name = src_desc->input_name;
wth->pseudo_header.k12.stack_file = src_desc->stack_file;
wth->pseudo_header.k12.input_type = src_desc->input_type;
switch(src_desc->input_type) {
case K12_PORT_ATMPVC:
if ((long)(K12_PACKET_FRAME + length + K12_PACKET_OFFSET_CID) < len) {
wth->pseudo_header.k12.input_info.atm.vp = pntohs(buffer + K12_PACKET_FRAME + length + K12_PACKET_OFFSET_VP);
wth->pseudo_header.k12.input_info.atm.vc = pntohs(buffer + K12_PACKET_FRAME + length + K12_PACKET_OFFSET_VC);
wth->pseudo_header.k12.input_info.atm.cid = *((unsigned char*)(buffer + K12_PACKET_FRAME + length + K12_PACKET_OFFSET_CID));
}
break;
/* Fall through */
default:
memcpy(&(wth->pseudo_header.k12.input_info),&(src_desc->input_info),sizeof(src_desc->input_info));
break;
}
} else {
K12_DBG(5,("k12_seek_read: NO SRC_RECORD FOUND"));
if (pseudo_header) {
memset(&(pseudo_header->k12),0,sizeof(pseudo_header->k12));
pseudo_header->k12.input_name = "unknown port";
pseudo_header->k12.stack_file = "unknown stack file";
}
memset(&(wth->pseudo_header.k12),0,sizeof(wth->pseudo_header.k12));
wth->pseudo_header.k12.input_name = "unknown port";
wth->pseudo_header.k12.stack_file = "unknown stack file";
}
if (pseudo_header) {
pseudo_header->k12.input = input;
pseudo_header->k12.stuff = k12;
}
wth->pseudo_header.k12.input = input;
wth->pseudo_header.k12.stuff = k12;
K12_DBG(5,("k12_seek_read: DONE OK"));
return TRUE;
}
static k12_t* new_k12_file_data(void) {
k12_t* fd = g_new(k12_t,1);
fd->file_len = 0;
fd->num_of_records = 0;
fd->src_by_name = g_hash_table_new(g_str_hash,g_str_equal);
fd->src_by_id = g_hash_table_new(g_direct_hash,g_direct_equal);
buffer_init(&(fd->extra_info), 100);
return fd;
}
static gboolean destroy_srcdsc(gpointer k _U_, gpointer v, gpointer p _U_) {
k12_src_desc_t* rec = (k12_src_desc_t*)v;
g_free(rec->input_name);
g_free(rec->stack_file);
g_free(rec);
return TRUE;
}
static void destroy_k12_file_data(k12_t* fd) {
g_hash_table_destroy(fd->src_by_id);
g_hash_table_foreach_remove(fd->src_by_name,destroy_srcdsc,NULL);
g_hash_table_destroy(fd->src_by_name);
buffer_free(&(fd->extra_info));
g_free(fd);
}
static void k12_close(wtap *wth) {
k12_t *k12 = (k12_t *)wth->priv;
destroy_k12_file_data(k12);
wth->priv = NULL; /* destroy_k12_file_data freed it */
#ifdef DEBUG_K12
K12_DBG(5,("k12_close: CLOSED"));
if (env_file) fclose(dbg_out);
#endif
}
int k12_open(wtap *wth, int *err, gchar **err_info) {
k12_src_desc_t* rec;
guint8 header_buffer[0x200];
guint8* read_buffer;
guint32 type;
long offset;
long len;
guint32 rec_len;
guint32 extra_len;
guint32 name_len;
guint32 stack_len;
guint i;
k12_t* file_data;
#ifdef DEBUG_K12
gchar* env_level = getenv("K12_DEBUG_LEVEL");
env_file = getenv("K12_DEBUG_FILENAME");
if ( env_file ) dbg_out = ws_fopen(env_file,"w");
else dbg_out = stderr;
if ( env_level ) debug_level = strtoul(env_level,NULL,10);
K12_DBG(1,("k12_open: ENTER debug_level=%u",debug_level));
#endif
if ( file_read(header_buffer,0x200,wth->fh) != 0x200 ) {
K12_DBG(1,("k12_open: FILE HEADER TOO SHORT OR READ ERROR"));
*err = file_error(wth->fh, err_info);
if (*err != 0) {
return -1;
}
return 0;
} else {
if ( memcmp(header_buffer,k12_file_magic,8) != 0 ) {
K12_DBG(1,("k12_open: BAD MAGIC"));
return 0;
}
}
offset = 0x200;
file_data = new_k12_file_data();
file_data->file_len = pntohl( header_buffer + 0x8);
file_data->num_of_records = pntohl( header_buffer + 0xC );
K12_DBG(5,("k12_open: FILE_HEADER OK: offset=%x file_len=%i records=%i",
offset,
file_data->file_len,
file_data->num_of_records ));
do {
len = get_record(&read_buffer, wth->fh, offset, err, err_info);
if ( len < 0 ) {
K12_DBG(1,("k12_open: BAD HEADER RECORD",len));
destroy_k12_file_data(file_data);
return -1;
}
if (len == 0) {
K12_DBG(1,("k12_open: BAD HEADER RECORD",len));
*err = WTAP_ERR_SHORT_READ;
destroy_k12_file_data(file_data);
return -1;
}
type = pntohl( read_buffer + K12_RECORD_TYPE );
if ( (type & K12_MASK_PACKET) == K12_REC_PACKET) {
/*
* we are at the first packet record, rewind and leave.
*/
if (file_seek(wth->fh, offset, SEEK_SET, err) == -1) {
destroy_k12_file_data(file_data);
return -1;
}
K12_DBG(5,("k12_open: FIRST PACKET offset=%x",offset));
break;
} else if (type == K12_REC_SRCDSC || type == K12_REC_SRCDSC2 ) {
rec = g_new0(k12_src_desc_t,1);
rec_len = pntohl( read_buffer + K12_RECORD_LEN );
extra_len = pntohs( read_buffer + K12_SRCDESC_EXTRALEN );
name_len = pntohs( read_buffer + K12_SRCDESC_NAMELEN );
stack_len = pntohs( read_buffer + K12_SRCDESC_STACKLEN );
rec->input = pntohl( read_buffer + K12_RECORD_SRC_ID );
K12_DBG(5,("k12_open: INTERFACE RECORD offset=%x interface=%x",offset,rec->input));
if (name_len == 0 || stack_len == 0
|| 0x20 + extra_len + name_len + stack_len > rec_len ) {
g_free(rec);
K12_DBG(5,("k12_open: failed (name_len == 0 || stack_len == 0 "
"|| 0x20 + extra_len + name_len + stack_len > rec_len) extra_len=%i name_len=%i stack_len=%i"));
destroy_k12_file_data(file_data);
return 0;
}
if (extra_len)
switch(( rec->input_type = pntohl( read_buffer + K12_SRCDESC_EXTRATYPE ) )) {
case K12_PORT_DS0S:
rec->input_info.ds0mask = 0x00000000;
for (i = 0; i < 32; i++) {
rec->input_info.ds0mask |= ( *(read_buffer + K12_SRCDESC_DS0_MASK + i) == 0xff ) ? 0x1<<(31-i) : 0x0;
}
break;
case K12_PORT_ATMPVC:
rec->input_info.atm.vp = pntohs( read_buffer + K12_SRCDESC_ATM_VPI );
rec->input_info.atm.vc = pntohs( read_buffer + K12_SRCDESC_ATM_VCI );
break;
default:
break;
}
else { /* Record viewer generated files
don't have this information */
if (read_buffer[K12_SRCDESC_PORT_TYPE] >= 0x14
&& read_buffer[K12_SRCDESC_PORT_TYPE] <= 0x17)
/* For ATM2_E1DS1, ATM2_E3DS3,
ATM2_STM1EL and ATM2_STM1OP */
rec->input_type = K12_PORT_ATMPVC;
}
/* XXX - this is assumed, in a number of places (not just in the
ascii_strdown_inplace() call below) to be null-terminated;
is that guaranteed (even with a corrupt file)?
Obviously not, as a corrupt file could contain anything
here; the Tektronix document says the strings "must end
with \0", but a bad file could fail to add the \0. */
rec->input_name = (gchar *)g_memdup(read_buffer + K12_SRCDESC_EXTRATYPE + extra_len, name_len);
rec->stack_file = (gchar *)g_memdup(read_buffer + K12_SRCDESC_EXTRATYPE + extra_len + name_len, stack_len);
ascii_strdown_inplace (rec->stack_file);
g_hash_table_insert(file_data->src_by_id,GUINT_TO_POINTER(rec->input),rec);
g_hash_table_insert(file_data->src_by_name,rec->stack_file,rec);
offset += len;
continue;
} else {
offset += len;
continue;
}
} while(1);
wth->file_type = WTAP_FILE_K12;
wth->file_encap = WTAP_ENCAP_K12;
wth->snapshot_length = 0;
wth->subtype_read = k12_read;
wth->subtype_seek_read = k12_seek_read;
wth->subtype_close = k12_close;
wth->priv = (void *)file_data;
wth->tsprecision = WTAP_FILE_TSPREC_NSEC;
return 1;
}
typedef struct {
guint32 file_len;
guint32 num_of_records;
guint32 file_offset;
} k12_dump_t;
int k12_dump_can_write_encap(int encap) {
if (encap == WTAP_ENCAP_PER_PACKET)
return WTAP_ERR_ENCAP_PER_PACKET_UNSUPPORTED;
if (encap != WTAP_ENCAP_K12)
return WTAP_ERR_UNSUPPORTED_ENCAP;
return 0;
}
static const gchar dumpy_junk[] = { 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 };
static gboolean k12_dump_record(wtap_dumper *wdh, guint32 len, guint8* buffer, int *err_p) {
k12_dump_t *k12 = (k12_dump_t *)wdh->priv;
guint32 junky_offset = (0x2000 - ( (k12->file_offset - 0x200) % 0x2000 )) % 0x2000;
if (len > junky_offset) {
if (junky_offset) {
if (! wtap_dump_file_write(wdh, buffer, junky_offset, err_p))
return FALSE;
}
if (! wtap_dump_file_write(wdh, dumpy_junk, 0x10, err_p))
return FALSE;
if (! wtap_dump_file_write(wdh, buffer+junky_offset, len - junky_offset, err_p))
return FALSE;
k12->file_offset += len + 0x10;
} else {
if (! wtap_dump_file_write(wdh, buffer, len, err_p))
return FALSE;
k12->file_offset += len;
}
k12->num_of_records++;
return TRUE;
}
static void k12_dump_src_setting(gpointer k _U_, gpointer v, gpointer p) {
k12_src_desc_t* src_desc = (k12_src_desc_t*)v;
wtap_dumper *wdh = (wtap_dumper *)p;
guint32 len;
guint offset;
guint i;
int errxxx; /* dummy */
union {
guint8 buffer[0x2000];
struct {
guint32 len;
guint32 type;
guint32 unk32_1;
guint32 input;
guint16 unk32_2;
guint16 color;
guint32 unk32_3;
guint32 unk32_4;
guint16 unk16_1;
guint16 extra_len;
guint16 name_len;
guint16 stack_len;
struct {
guint32 type;
union {
struct {
guint32 unk32;
guint8 mask[32];
} ds0mask;
struct {
guint8 unk_data[0x10];
guint16 vp;
guint16 vc;
} atm;
guint32 unk;
} desc;
} extra;
} record;
} obj;
obj.record.type = g_htonl(K12_REC_SRCDSC);
obj.record.unk32_1 = g_htonl(0x00000001);
obj.record.input = g_htonl(src_desc->input);
obj.record.unk32_2 = g_htons(0x0000);
obj.record.color = g_htons(0x060f);
obj.record.unk32_3 = g_htonl(0x00000003);
switch (src_desc->input_type) {
case K12_PORT_ATMPVC:
obj.record.unk32_4 = g_htonl(0x01001400);
break;
default:
obj.record.unk32_4 = g_htonl(0x01000100);
}
obj.record.unk16_1 = g_htons(0x0000);
obj.record.name_len = (guint16) strlen(src_desc->input_name) + 1;
obj.record.stack_len = (guint16) strlen(src_desc->stack_file) + 1;
obj.record.extra.type = g_htonl(src_desc->input_type);
switch (src_desc->input_type) {
case K12_PORT_ATMPVC:
obj.record.extra_len = g_htons(0x18);
obj.record.extra.desc.atm.vp = g_htons(src_desc->input_info.atm.vp);
obj.record.extra.desc.atm.vc = g_htons(src_desc->input_info.atm.vc);
offset = 0x3c;
break;
case K12_PORT_DS0S:
obj.record.extra_len = g_htons(0x18);
for( i=0; i<32; i++ ) {
obj.record.extra.desc.ds0mask.mask[i] =
(src_desc->input_info.ds0mask & (1 << i)) ? 0xff : 0x00;
}
offset = 0x3c;
break;
default:
obj.record.extra_len = g_htons(0x08);
offset = 0x2c;
break;
}
memcpy(obj.buffer + offset,
src_desc->input_name,
obj.record.name_len);
memcpy(obj.buffer + offset + obj.record.name_len,
src_desc->stack_file,
obj.record.stack_len);
len = offset + obj.record.name_len + obj.record.stack_len;
len += (len % 4) ? 4 - (len % 4) : 0;
obj.record.len = g_htonl(len);
obj.record.name_len = g_htons(obj.record.name_len);
obj.record.stack_len = g_htons(obj.record.stack_len);
k12_dump_record(wdh,len,obj.buffer, &errxxx); /* fwrite errs ignored: see k12_dump below */
}
static gboolean k12_dump(wtap_dumper *wdh, const struct wtap_pkthdr *phdr,
const union wtap_pseudo_header *pseudo_header,
const guint8 *pd, int *err) {
k12_dump_t *k12 = (k12_dump_t *)wdh->priv;
guint32 len;
union {
guint8 buffer[0x2000];
struct {
guint32 len;
guint32 type;
guint32 frame_len;
guint32 input;
guint32 datum_1;
guint32 datum_2;
guint64 ts;
guint8 frame[0x1fc0];
} record;
} obj;
if (k12->num_of_records == 0) {
k12_t* file_data = (k12_t*)pseudo_header->k12.stuff;
/* XXX: We'll assume that any fwrite errors in k12_dump_src_setting will */
/* repeat during the final k12_dump_record at the end of k12_dump */
/* (and thus cause an error return from k12_dump). */
/* (I don't see a reasonably clean way to handle any fwrite errors */
/* encountered in k12_dump_src_setting). */
g_hash_table_foreach(file_data->src_by_id,k12_dump_src_setting,wdh);
}
obj.record.len = 0x20 + phdr->len;
obj.record.len += (obj.record.len % 4) ? 4 - obj.record.len % 4 : 0;
len = obj.record.len;
obj.record.len = g_htonl(obj.record.len);
obj.record.type = g_htonl(K12_REC_PACKET);
obj.record.frame_len = g_htonl(phdr->len);
obj.record.input = g_htonl(pseudo_header->k12.input);
obj.record.ts = GUINT64_TO_BE((((guint64)phdr->ts.secs - 631152000) * 2000000) + (phdr->ts.nsecs / 1000 * 2));
memcpy(obj.record.frame,pd,phdr->len);
return k12_dump_record(wdh,len,obj.buffer, err);
}
static const guint8 k12_eof[] = {0xff,0xff};
static gboolean k12_dump_close(wtap_dumper *wdh, int *err) {
k12_dump_t *k12 = (k12_dump_t *)wdh->priv;
union {
guint8 b[sizeof(guint32)];
guint32 u;
} d;
if (! wtap_dump_file_write(wdh, k12_eof, 2, err))
return FALSE;
if (fseek(wdh->fh, 8, SEEK_SET) == -1) {
*err = errno;
return FALSE;
}
d.u = g_htonl(k12->file_len);
if (! wtap_dump_file_write(wdh, d.b, 4, err))
return FALSE;
d.u = g_htonl(k12->num_of_records);
if (! wtap_dump_file_write(wdh, d.b, 4, err))
return FALSE;
return TRUE;
}
gboolean k12_dump_open(wtap_dumper *wdh, int *err) {
k12_dump_t *k12;
if ( ! wtap_dump_file_write(wdh, k12_file_magic, 8, err)) {
return FALSE;
}
if (fseek(wdh->fh, 0x200, SEEK_SET) == -1) {
*err = errno;
return FALSE;
}
wdh->subtype_write = k12_dump;
wdh->subtype_close = k12_dump_close;
k12 = (k12_dump_t *)g_malloc(sizeof(k12_dump_t));
wdh->priv = (void *)k12;
k12->file_len = 0x200;
k12->num_of_records = 0;
k12->file_offset = 0x200;
return TRUE;
}
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