e6002deb3e
* asn1/mpeg/packet-mpeg-pes-template.c: Improved decoding of PES extension header and Pack header. Decode SCR, PTS, and DTS. * asn1/mpeg/mpeg-pes.asn (Pack): Remove. * epan/dissectors/packet-mpeg-pes.c: Regenerate. * wiretap/mpeg.c (mpeg_read): Decode the SCR using integer arithmetic instead of double float arithmetic to prevent rounding error. * wiretap/wtap-int.h (mpeg_t) <t0>: Use time_t instead of double. svn path=/trunk/; revision=22577
445 lines
11 KiB
C
445 lines
11 KiB
C
/* wtap-int.h
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*
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* $Id$
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*
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* Wiretap Library
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* Copyright (c) 1998 by Gilbert Ramirez <gram@alumni.rice.edu>
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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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#ifndef __WTAP_INT_H__
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#define __WTAP_INT_H__
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#ifdef HAVE_SYS_TIME_H
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#include <sys/time.h>
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#endif
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#include <glib.h>
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#include <stdio.h>
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#include <time.h>
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#ifdef HAVE_LIBZ
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#ifdef HAVE_WINSOCK2_H
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#include <winsock2.h>
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#endif
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#include <zlib.h>
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#define FILE_T gzFile
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#else /* No zLib */
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#define FILE_T FILE *
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#endif /* HAVE_LIBZ */
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#include "wtap.h"
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/* Information for a compressed Sniffer data stream. */
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typedef struct {
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unsigned char *buf; /* buffer into which we uncompress data */
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size_t nbytes; /* number of bytes of data in that buffer */
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int nextout; /* offset in that buffer of stream's current position */
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gint64 comp_offset; /* current offset in compressed data stream */
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gint64 uncomp_offset; /* current offset in uncompressed data stream */
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} ngsniffer_comp_stream_t;
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typedef struct {
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guint8 *sdate; /* Packet start date */
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gboolean tcp_formatted; /* TCP/IP data formated Y/N */
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int format; /* Trace format type */
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} iseries_t;
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typedef struct {
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guint maj_vers;
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guint min_vers;
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double timeunit;
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time_t start;
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guint network; /* network type */
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ngsniffer_comp_stream_t seq; /* sequential access */
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ngsniffer_comp_stream_t rand; /* random access */
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GList *first_blob; /* list element for first blob */
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GList *last_blob; /* list element for last blob */
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GList *current_blob; /* list element for current blob */
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} ngsniffer_t;
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typedef struct {
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gboolean byte_swapped;
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} i4btrace_t;
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typedef struct {
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gboolean is_hpux_11;
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} nettl_t;
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typedef struct {
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time_t start;
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} lanalyzer_t;
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typedef enum {
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NOT_SWAPPED,
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SWAPPED,
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MAYBE_SWAPPED
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} swapped_type_t;
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typedef struct {
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gboolean byte_swapped;
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swapped_type_t lengths_swapped;
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guint16 version_major;
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guint16 version_minor;
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} libpcap_t;
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typedef struct {
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time_t start_secs;
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guint32 start_usecs;
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guint8 version_major;
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guint32 *frame_table;
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guint32 frame_table_size;
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guint current_frame;
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} netmon_t;
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typedef struct {
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time_t start_time;
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double ticks_per_sec;
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double start_timestamp;
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gboolean wrapped;
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guint32 nframes;
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gint64 start_offset;
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gint64 end_offset;
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int version_major;
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gboolean fcs_valid; /* if packets have valid FCS at the end */
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guint isdn_type; /* 1 = E1 PRI, 2 = T1 PRI, 3 = BRI */
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} netxray_t;
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typedef struct {
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time_t inittime;
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int adjusted;
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gint64 next_packet_seek_start;
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} ascend_t;
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typedef struct {
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gboolean byteswapped;
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} csids_t;
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typedef struct {
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struct timeval reference_time;
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} etherpeek_t;
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typedef struct {
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gboolean has_fcs;
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} airopeek9_t;
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typedef struct {
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guint32 atm_encap;
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guint32 hdlc_encap;
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gboolean is_rawatm;
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} erf_t;
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typedef struct _k12_t k12_t;
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typedef struct {
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time_t start_secs;
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guint32 start_usecs;
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} catapult_dct2000_t;
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typedef struct {
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struct wtap_nstime now;
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time_t t0;
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} mpeg_t;
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typedef gboolean (*subtype_read_func)(struct wtap*, int*, char**, gint64*);
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typedef gboolean (*subtype_seek_read_func)(struct wtap*, gint64, union wtap_pseudo_header*,
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guint8*, int, int *, char **);
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struct wtap {
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FILE_T fh;
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int fd; /* File descriptor for cap file */
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FILE_T random_fh; /* Secondary FILE_T for random access */
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int file_type;
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int snapshot_length;
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struct Buffer *frame_buffer;
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struct wtap_pkthdr phdr;
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union wtap_pseudo_header pseudo_header;
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gint64 data_offset;
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union {
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libpcap_t *pcap;
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lanalyzer_t *lanalyzer;
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ngsniffer_t *ngsniffer;
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iseries_t *iseries;
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i4btrace_t *i4btrace;
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nettl_t *nettl;
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netmon_t *netmon;
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netxray_t *netxray;
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ascend_t *ascend;
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csids_t *csids;
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etherpeek_t *etherpeek;
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airopeek9_t *airopeek9;
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erf_t *erf;
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k12_t *k12;
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catapult_dct2000_t *catapult_dct2000;
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mpeg_t *mpeg;
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void *generic;
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} capture;
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subtype_read_func subtype_read;
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subtype_seek_read_func subtype_seek_read;
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void (*subtype_sequential_close)(struct wtap*);
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void (*subtype_close)(struct wtap*);
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int file_encap; /* per-file, for those
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file formats that have
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per-file encapsulation
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types */
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int tsprecision; /* timestamp precision of the lower 32bits
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* e.g. WTAP_FILE_TSPREC_USEC */
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};
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struct wtap_dumper;
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typedef gboolean (*subtype_write_func)(struct wtap_dumper*,
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const struct wtap_pkthdr*, const union wtap_pseudo_header*,
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const guchar*, int*);
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typedef gboolean (*subtype_close_func)(struct wtap_dumper*, int*);
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typedef struct {
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gboolean first_frame;
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time_t start;
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} ngsniffer_dump_t;
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typedef struct {
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gboolean first_frame;
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struct wtap_nstime start;
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guint32 nframes;
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} netxray_dump_t;
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typedef struct {
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gboolean got_first_record_time;
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struct wtap_nstime first_record_time;
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guint32 frame_table_offset;
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guint32 *frame_table;
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guint frame_table_index;
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guint frame_table_size;
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} netmon_dump_t;
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typedef struct {
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guint32 nframes;
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} _5views_dump_t;
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typedef struct {
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guint64 packet_count;
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guint8 network_type;
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} niobserver_dump_t;
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typedef struct {
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guint32 file_len;
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guint32 num_of_records;
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guint32 file_offset;
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} k12_dump_t;
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typedef struct {
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gboolean first_packet_written;
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struct wtap_nstime start_time;
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} dct2000_dump_t;
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struct wtap_dumper {
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FILE* fh;
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int file_type;
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int snaplen;
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int encap;
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gboolean compressed;
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gint64 bytes_dumped;
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union {
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void *opaque;
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ngsniffer_dump_t *ngsniffer;
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netmon_dump_t *netmon;
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netxray_dump_t *netxray;
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_5views_dump_t *_5views;
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niobserver_dump_t *niobserver;
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k12_dump_t *k12;
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dct2000_dump_t *dct2000;
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} dump;
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subtype_write_func subtype_write;
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subtype_close_func subtype_close;
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int tsprecision; /* timestamp precision of the lower 32bits
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* e.g. WTAP_FILE_TSPREC_USEC */
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};
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extern size_t wtap_dump_file_write(wtap_dumper *wdh, const void *buf, unsigned bufsize);
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extern int wtap_dump_file_ferror(wtap_dumper *wdh);
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extern gint wtap_num_file_types;
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/* Macros to byte-swap 32-bit and 16-bit quantities. */
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#define BSWAP32(x) \
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((((x)&0xFF000000)>>24) | \
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(((x)&0x00FF0000)>>8) | \
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(((x)&0x0000FF00)<<8) | \
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(((x)&0x000000FF)<<24))
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#define BSWAP16(x) \
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((((x)&0xFF00)>>8) | \
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(((x)&0x00FF)<<8))
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/* Macros to byte-swap possibly-unaligned 32-bit and 16-bit quantities;
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* they take a pointer to the quantity, and byte-swap it in place.
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*/
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#define PBSWAP32(p) \
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{ \
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guint8 tmp; \
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tmp = (p)[3]; \
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(p)[3] = (p)[0]; \
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(p)[0] = tmp; \
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tmp = (p)[2]; \
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(p)[2] = (p)[1]; \
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(p)[1] = tmp; \
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}
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#define PBSWAP16(p) \
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{ \
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guint8 tmp; \
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tmp = (p)[1]; \
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(p)[1] = (p)[0]; \
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(p)[0] = tmp; \
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}
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/* Turn host-byte-order values into little-endian values. */
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#define htoles(s) GUINT16_TO_LE(s)
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#define htolel(l) GUINT32_TO_LE(l)
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#define htolell(ll) GUINT64_TO_LE(ll)
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/* Pointer versions of ntohs and ntohl. Given a pointer to a member of a
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* byte array, returns the value of the two or four bytes at the pointer.
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* The pletoh[sl] versions return the little-endian representation.
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* We also provide pntohll and pletohll, which extract 64-bit integral
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* quantities.
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*
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* These will work regardless of the byte alignment of the pointer.
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*/
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#ifndef pntohs
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#define pntohs(p) ((guint16) \
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((guint16)*((const guint8 *)(p)+0)<<8| \
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(guint16)*((const guint8 *)(p)+1)<<0))
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#endif
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#ifndef pntoh24
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#define pntoh24(p) ((guint32)*((const guint8 *)(p)+0)<<16| \
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(guint32)*((const guint8 *)(p)+1)<<8| \
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(guint32)*((const guint8 *)(p)+2)<<0)
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#endif
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#ifndef pntohl
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#define pntohl(p) ((guint32)*((const guint8 *)(p)+0)<<24| \
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(guint32)*((const guint8 *)(p)+1)<<16| \
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(guint32)*((const guint8 *)(p)+2)<<8| \
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(guint32)*((const guint8 *)(p)+3)<<0)
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#endif
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#ifndef pntohll
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#define pntohll(p) ((guint64)*((const guint8 *)(p)+0)<<56| \
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(guint64)*((const guint8 *)(p)+1)<<48| \
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(guint64)*((const guint8 *)(p)+2)<<40| \
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(guint64)*((const guint8 *)(p)+3)<<32| \
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(guint64)*((const guint8 *)(p)+4)<<24| \
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(guint64)*((const guint8 *)(p)+5)<<16| \
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(guint64)*((const guint8 *)(p)+6)<<8| \
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(guint64)*((const guint8 *)(p)+7)<<0)
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#endif
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#ifndef pletohs
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#define pletohs(p) ((guint16) \
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((guint16)*((const guint8 *)(p)+1)<<8| \
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(guint16)*((const guint8 *)(p)+0)<<0))
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#endif
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#ifndef pletoh24
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#define pletoh24(p) ((guint32)*((const guint8 *)(p)+2)<<16| \
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(guint32)*((const guint8 *)(p)+1)<<8| \
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(guint32)*((const guint8 *)(p)+0)<<0)
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#endif
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#ifndef pletohl
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#define pletohl(p) ((guint32)*((const guint8 *)(p)+3)<<24| \
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(guint32)*((const guint8 *)(p)+2)<<16| \
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(guint32)*((const guint8 *)(p)+1)<<8| \
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(guint32)*((const guint8 *)(p)+0)<<0)
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#endif
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#ifndef pletohll
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#define pletohll(p) ((guint64)*((const guint8 *)(p)+7)<<56| \
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(guint64)*((const guint8 *)(p)+6)<<48| \
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(guint64)*((const guint8 *)(p)+5)<<40| \
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(guint64)*((const guint8 *)(p)+4)<<32| \
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(guint64)*((const guint8 *)(p)+3)<<24| \
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(guint64)*((const guint8 *)(p)+2)<<16| \
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(guint64)*((const guint8 *)(p)+1)<<8| \
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(guint64)*((const guint8 *)(p)+0)<<0)
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#endif
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/* Pointer routines to put items out in a particular byte order.
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* These will work regardless of the byte alignment of the pointer.
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*/
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#ifndef phtons
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#define phtons(p, v) \
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{ \
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(p)[0] = (guint8)((v) >> 8); \
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(p)[1] = (guint8)((v) >> 0); \
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}
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#endif
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#ifndef phtonl
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#define phtonl(p, v) \
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{ \
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(p)[0] = (guint8)((v) >> 24); \
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(p)[1] = (guint8)((v) >> 16); \
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(p)[2] = (guint8)((v) >> 8); \
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(p)[3] = (guint8)((v) >> 0); \
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}
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#endif
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#define wtap_file_read_unknown_bytes(target, num_bytes, fh, err) \
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G_STMT_START \
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{ \
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int _bytes_read; \
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_bytes_read = file_read((target), 1, (num_bytes), (fh)); \
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if (_bytes_read != (int) (num_bytes)) { \
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*(err) = file_error((fh)); \
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return FALSE; \
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} \
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} \
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G_STMT_END
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#define wtap_file_read_expected_bytes(target, num_bytes, fh, err) \
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G_STMT_START \
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{ \
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int _bytes_read; \
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_bytes_read = file_read((target), 1, (num_bytes), (fh)); \
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if (_bytes_read != (int) (num_bytes)) { \
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*(err) = file_error((fh)); \
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if (*(err) == 0 && _bytes_read > 0) { \
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*(err) = WTAP_ERR_SHORT_READ; \
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} \
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return FALSE; \
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} \
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} \
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G_STMT_END
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/* glib doesn't have g_ptr_array_len of all things!*/
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#ifndef g_ptr_array_len
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#define g_ptr_array_len(a) ((a)->len)
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#endif
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#endif /* __WTAP_INT_H__ */
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