![John Thacker](/assets/img/avatar_default.png)
Free the SHB headers and IDB interface data from the dump parameters after we are done with them.
1089 lines
41 KiB
C
1089 lines
41 KiB
C
/**-*-C-*-**********************************************************************
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*
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* text2pcap.c
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*
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* Utility to convert an ASCII hexdump into a libpcap-format capture file
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*
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* (c) Copyright 2001 Ashok Narayanan <ashokn@cisco.com>
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*
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*******************************************************************************/
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/*******************************************************************************
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*
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* This utility reads in an ASCII hexdump of this common format:
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*
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* 00000000 00 E0 1E A7 05 6F 00 10 5A A0 B9 12 08 00 46 00 .....o..Z.....F.
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* 00000010 03 68 00 00 00 00 0A 2E EE 33 0F 19 08 7F 0F 19 .h.......3......
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* 00000020 03 80 94 04 00 00 10 01 16 A2 0A 00 03 50 00 0C .............P..
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* 00000030 01 01 0F 19 03 80 11 01 1E 61 00 0C 03 01 0F 19 .........a......
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*
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* Each bytestring line consists of an offset, one or more bytes, and
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* text at the end. An offset is defined as a hex string of more than
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* two characters. A byte is defined as a hex string of exactly two
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* characters. The text at the end is ignored, as is any text before
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* the offset. Bytes read from a bytestring line are added to the
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* current packet only if all the following conditions are satisfied:
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*
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* - No text appears between the offset and the bytes (any bytes appearing after
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* such text would be ignored)
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*
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* - The offset must be arithmetically correct, i.e. if the offset is 00000020,
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* then exactly 32 bytes must have been read into this packet before this.
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* If the offset is wrong, the packet is immediately terminated
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*
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* A packet start is signaled by a zero offset.
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*
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* Lines starting with #TEXT2PCAP are directives. These allow the user
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* to embed instructions into the capture file which allows text2pcap
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* to take some actions (e.g. specifying the encapsulation
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* etc.). Currently no directives are implemented.
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*
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* Lines beginning with # which are not directives are ignored as
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* comments. Currently all non-hexdump text is ignored by text2pcap;
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* in the future, text processing may be added, but lines prefixed
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* with '#' will still be ignored.
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*
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* The output is a libpcap packet containing Ethernet frames by
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* default. This program takes options which allow the user to add
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* dummy Ethernet, IP and UDP, TCP or SCTP headers to the packets in order
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* to allow dumps of L3 or higher protocols to be decoded.
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*
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* Considerable flexibility is built into this code to read hexdumps
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* of slightly different formats. For example, any text prefixing the
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* hexdump line is dropped (including mail forwarding '>'). The offset
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* can be any hex number of four digits or greater.
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*
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* This converter cannot read a single packet greater than
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* WTAP_MAX_PACKET_SIZE_STANDARD. The snapshot length is automatically
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* set to WTAP_MAX_PACKET_SIZE_STANDARD.
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*/
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#include <config.h>
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#define WS_LOG_DOMAIN LOG_DOMAIN_MAIN
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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 <wsutil/file_util.h>
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#include <cli_main.h>
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#include <wsutil/cmdarg_err.h>
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#include <ui/text_import.h>
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#include <wsutil/version_info.h>
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#include <ui/failure_message.h>
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#include <wsutil/report_message.h>
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#include <wsutil/inet_addr.h>
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#include <wsutil/cpu_info.h>
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#include <wsutil/os_version_info.h>
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#include <wsutil/privileges.h>
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#include <wsutil/strtoi.h>
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#include <glib.h>
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#include <ws_exit_codes.h>
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#include <wsutil/str_util.h>
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#include <wsutil/strnatcmp.h>
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#include <wsutil/wslog.h>
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#include <wsutil/ws_getopt.h>
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#include <errno.h>
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#include "text2pcap.h"
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#include "wiretap/wtap.h"
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#include "wiretap/pcap-encap.h"
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/*--- Options --------------------------------------------------------------------*/
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/* Be quiet */
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static gboolean quiet = FALSE;
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/* Dummy Ethernet header */
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static gboolean hdr_ethernet = FALSE;
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#if 0
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/* XXX: Maybe add custom Ethernet Address options? */
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static guint8 hdr_eth_dest_addr[6] = {0x0a, 0x02, 0x02, 0x02, 0x02, 0x02};
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static guint8 hdr_eth_src_addr[6] = {0x0a, 0x02, 0x02, 0x02, 0x02, 0x01};
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#endif
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static guint32 hdr_ethernet_proto = 0;
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/* Dummy IP header */
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static gboolean hdr_ip = FALSE;
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static gboolean hdr_ipv6 = FALSE;
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static gboolean have_hdr_ip_proto = FALSE;
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static guint8 hdr_ip_proto = 0;
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/* Destination and source addresses for IP header */
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static guint32 hdr_ip_dest_addr = 0;
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static guint32 hdr_ip_src_addr = 0;
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static ws_in6_addr hdr_ipv6_dest_addr = {{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}};
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static ws_in6_addr hdr_ipv6_src_addr = {{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}};
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/* Dummy UDP header */
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static gboolean hdr_udp = FALSE;
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static guint32 hdr_dest_port = 0;
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static guint32 hdr_src_port = 0;
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/* Dummy TCP header */
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static gboolean hdr_tcp = FALSE;
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/* Dummy SCTP header */
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static gboolean hdr_sctp = FALSE;
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static guint32 hdr_sctp_src = 0;
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static guint32 hdr_sctp_dest = 0;
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static guint32 hdr_sctp_tag = 0;
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/* Dummy DATA chunk header */
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static gboolean hdr_data_chunk = FALSE;
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static guint32 hdr_data_chunk_tsn = 0;
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static guint16 hdr_data_chunk_sid = 0;
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static guint16 hdr_data_chunk_ssn = 0;
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static guint32 hdr_data_chunk_ppid = 0;
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/* Export PDU */
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static gboolean hdr_export_pdu = FALSE;
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/*--- Local data -----------------------------------------------------------------*/
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/* This is where we store the packet currently being built */
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static guint32 max_offset = WTAP_MAX_PACKET_SIZE_STANDARD;
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/* Time code of packet, derived from packet_preamble */
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static int ts_fmt_iso = 0;
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/* Input file */
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static char *input_filename;
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static FILE *input_file = NULL;
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/* Output file */
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static char *output_filename;
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static wtap_dumper* wdh;
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/*----------------------------------------------------------------------
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* Print usage string and exit
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*/
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static void
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print_usage (FILE *output)
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{
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fprintf(output,
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"\n"
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"Usage: text2pcap [options] <infile> <outfile>\n"
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"\n"
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"where <infile> specifies input filename (use - for standard input)\n"
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" <outfile> specifies output filename (use - for standard output)\n"
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"\n"
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"Input:\n"
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" -o hex|oct|dec|none parse offsets as (h)ex, (o)ctal, (d)ecimal, or (n)one;\n"
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" default is hex.\n"
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" -t <timefmt> treat the text before the packet as a date/time code;\n"
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" <timefmt> is a format string supported by strptime,\n"
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" with an optional %%f descriptor for fractional seconds.\n"
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" Example: The time \"10:15:14.5476\" has the format code\n"
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" \"%%H:%%M:%%S.%%f\"\n"
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" The special format string ISO supports ISO-8601 times.\n"
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" NOTE: Date/time fields from the current date/time are\n"
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" used as the default for unspecified fields.\n"
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" -D the text before the packet starts with an I or an O,\n"
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" indicating that the packet is inbound or outbound.\n"
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" This is used when generating dummy headers if the\n"
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" output format supports it (e.g. pcapng).\n"
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" -a enable ASCII text dump identification.\n"
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" The start of the ASCII text dump can be identified\n"
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" and excluded from the packet data, even if it looks\n"
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" like a HEX dump.\n"
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" NOTE: Do not enable it if the input file does not\n"
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" contain the ASCII text dump.\n"
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" -r <regex> enable regex mode. Scan the input using <regex>, a Perl\n"
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" compatible regular expression matching a single packet.\n"
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" Named capturing subgroups are used to identify fields:\n"
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" <data> (mand.), and <time>, <dir>, and <seqno> (opt.)\n"
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" The time field format is taken from the -t option\n"
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" Example: -r '^(?<dir>[<>])\\s(?<time>\\d+:\\d\\d:\\d\\d.\\d+)\\s(?<data>[0-9a-fA-F]+)$'\n"
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" could match a file with lines like\n"
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" > 0:00:00.265620 a130368b000000080060\n"
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" < 0:00:00.295459 a2010800000000000000000800000000\n"
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" -b 2|8|16|64 encoding base (radix) of the packet data in regex mode\n"
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" (def: 16: hexadecimal) No effect in hexdump mode.\n"
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"\n"
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"Output:\n"
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" -F <capture type> set the output file type; default is pcapng.\n"
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" an empty \"-F\" option will list the file types.\n"
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" -E <encap type> set the output file encapsulation type; default is\n"
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" ether (Ethernet). An empty \"-E\" option will list\n"
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" the encapsulation types.\n"
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" -l <typenum> set the output file encapsulation type via link-layer\n"
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" type number; default is 1 (Ethernet). See\n"
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" https://www.tcpdump.org/linktypes.html for a list of\n"
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" numbers.\n"
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" Example: -l 7 for ARCNet packets.\n"
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" -m <max-packet> max packet length in output; default is %d\n"
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" -N <intf-name> assign name to the interface in the pcapng file.\n"
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"\n"
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"Prepend dummy header:\n"
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" -e <l3pid> prepend dummy Ethernet II header with specified L3PID\n"
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" (in HEX).\n"
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" Example: -e 0x806 to specify an ARP packet.\n"
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" -i <proto> prepend dummy IP header with specified IP protocol\n"
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" (in DECIMAL).\n"
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" Automatically prepends Ethernet header as well if\n"
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" link-layer type is Ethernet.\n"
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" Example: -i 46\n"
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" -4 <srcip>,<destip> prepend dummy IPv4 header with specified\n"
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" dest and source address.\n"
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" Example: -4 10.0.0.1,10.0.0.2\n"
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" -6 <srcip>,<destip> prepend dummy IPv6 header with specified\n"
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" dest and source address.\n"
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" Example: -6 2001:db8::b3ff:fe1e:8329,2001:0db8:85a3::8a2e:0370:7334\n"
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" -u <srcp>,<destp> prepend dummy UDP header with specified\n"
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" source and destination ports (in DECIMAL).\n"
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" Automatically prepends Ethernet & IP headers as well.\n"
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" Example: -u 1000,69 to make the packets look like\n"
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" TFTP/UDP packets.\n"
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" -T <srcp>,<destp> prepend dummy TCP header with specified\n"
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" source and destination ports (in DECIMAL).\n"
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" Automatically prepends Ethernet & IP headers as well.\n"
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" Example: -T 50,60\n"
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" -s <srcp>,<dstp>,<tag> prepend dummy SCTP header with specified\n"
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" source/dest ports and verification tag (in DECIMAL).\n"
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" Automatically prepends Ethernet & IP headers as well.\n"
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" Example: -s 30,40,34\n"
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" -S <srcp>,<dstp>,<ppi> prepend dummy SCTP header with specified\n"
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" source/dest ports and verification tag 0.\n"
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" Automatically prepends a dummy SCTP DATA\n"
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" chunk header with payload protocol identifier ppi.\n"
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" Example: -S 30,40,34\n"
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" -P <dissector> prepend EXPORTED_PDU header with specified dissector\n"
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" as the payload DISSECTOR_NAME tag.\n"
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" Automatically sets link type to Upper PDU Export.\n"
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" EXPORTED_PDU payload defaults to \"data\" otherwise.\n"
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"\n",
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WTAP_MAX_PACKET_SIZE_STANDARD);
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ws_log_print_usage(output);
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fprintf(output, "\n"
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"Miscellaneous:\n"
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" -h display this help and exit\n"
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" -v print version information and exit\n"
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" -q don't report processed packet counts\n"
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"");
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}
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/*
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* Set the hdr_ip_proto parameter, and set the flag indicate that the
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* parameter has been specified.
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*
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* XXX - catch the case where two different options set it differently?
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*/
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static void
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set_hdr_ip_proto(guint8 ip_proto)
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{
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have_hdr_ip_proto = TRUE;
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hdr_ip_proto = ip_proto;
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}
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static void
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list_capture_types(void) {
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GArray *writable_type_subtypes;
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cmdarg_err("The available capture file types for the \"-F\" flag are:\n");
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writable_type_subtypes = wtap_get_writable_file_types_subtypes(FT_SORT_BY_NAME);
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for (guint i = 0; i < writable_type_subtypes->len; i++) {
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int ft = g_array_index(writable_type_subtypes, int, i);
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fprintf(stderr, " %s - %s\n", wtap_file_type_subtype_name(ft),
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wtap_file_type_subtype_description(ft));
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}
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g_array_free(writable_type_subtypes, TRUE);
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}
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struct string_elem {
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const char *sstr; /* The short string */
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const char *lstr; /* The long string */
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};
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static gint
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string_nat_compare(gconstpointer a, gconstpointer b)
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{
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return ws_ascii_strnatcmp(((const struct string_elem *)a)->sstr,
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((const struct string_elem *)b)->sstr);
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}
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static void
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string_elem_print(gpointer data, gpointer stream_ptr)
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{
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fprintf((FILE *) stream_ptr, " %s - %s\n",
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((struct string_elem *)data)->sstr,
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((struct string_elem *)data)->lstr);
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}
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static void
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list_encap_types(void) {
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int i;
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struct string_elem *encaps;
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GSList *list = NULL;
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encaps = g_new(struct string_elem, wtap_get_num_encap_types());
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cmdarg_err("The available encapsulation types for the \"-E\" flag are:\n");
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for (i = 0; i < wtap_get_num_encap_types(); i++) {
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/* Exclude wtap encapsulations that require a pseudo header,
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* because we won't setup one from the text we import and
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* wiretap doesn't allow us to write 'raw' frames
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*/
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if (!wtap_encap_requires_phdr(i)) {
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encaps[i].sstr = wtap_encap_name(i);
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if (encaps[i].sstr != NULL) {
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encaps[i].lstr = wtap_encap_description(i);
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list = g_slist_insert_sorted(list, &encaps[i], string_nat_compare);
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}
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}
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}
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g_slist_foreach(list, string_elem_print, stderr);
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g_slist_free(list);
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g_free(encaps);
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}
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/*----------------------------------------------------------------------
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* Parse CLI options
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*/
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static int
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parse_options(int argc, char *argv[], text_import_info_t * const info, wtap_dump_params * const params)
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{
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int ret;
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int c;
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char *p;
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static const struct ws_option long_options[] = {
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{"help", ws_no_argument, NULL, 'h'},
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{"version", ws_no_argument, NULL, 'v'},
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{0, 0, 0, 0 }
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};
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const char *interface_name = NULL;
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/* Link-layer type; see https://www.tcpdump.org/linktypes.html for details */
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guint32 pcap_link_type = 1; /* Default is LINKTYPE_ETHERNET */
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int file_type_subtype = WTAP_FILE_TYPE_SUBTYPE_UNKNOWN;
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int wtap_encap_type = WTAP_ENCAP_ETHERNET;
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int err;
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char* err_info;
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GError* gerror = NULL;
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GRegex* regex = NULL;
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info->mode = TEXT_IMPORT_HEXDUMP;
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info->hexdump.offset_type = OFFSET_HEX;
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info->regex.encoding = ENCODING_PLAIN_HEX;
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info->payload = "data";
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/* Initialize the version information. */
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ws_init_version_info("Text2pcap", NULL, NULL);
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/* Scan CLI parameters */
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while ((c = ws_getopt_long(argc, argv, "hqab:De:E:F:i:l:m:nN:o:u:P:r:s:S:t:T:v4:6:", long_options, NULL)) != -1) {
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switch (c) {
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case 'h':
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show_help_header("Generate a capture file from an ASCII hexdump of packets.");
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print_usage(stdout);
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exit(0);
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break;
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case 'q': quiet = TRUE; break;
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case 'a': info->hexdump.identify_ascii = TRUE; break;
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case 'D': info->hexdump.has_direction = TRUE; break;
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case 'l':
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pcap_link_type = (guint32)strtol(ws_optarg, NULL, 0);
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wtap_encap_type = wtap_pcap_encap_to_wtap_encap(pcap_link_type);
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break;
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case 'm': max_offset = (guint32)strtol(ws_optarg, NULL, 0); break;
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case 'n': cmdarg_err("'-n' is deprecated; the output format already defaults to pcapng."); break;
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case 'N': interface_name = ws_optarg; break;
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case 'b':
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{
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guint8 radix;
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if (!ws_strtou8(ws_optarg, NULL, &radix)) {
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cmdarg_err("Bad argument for '-b': %s", ws_optarg);
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print_usage(stderr);
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return WS_EXIT_INVALID_OPTION;
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}
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switch (radix) {
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case 2: info->regex.encoding = ENCODING_PLAIN_BIN; break;
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case 8: info->regex.encoding = ENCODING_PLAIN_OCT; break;
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case 16: info->regex.encoding = ENCODING_PLAIN_HEX; break;
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case 64: info->regex.encoding = ENCODING_BASE64; break;
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default:
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cmdarg_err("Bad argument for '-b': %s", ws_optarg);
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print_usage(stderr);
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return WS_EXIT_INVALID_OPTION;
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}
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break;
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}
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case 'o':
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if (ws_optarg[0] != 'h' && ws_optarg[0] != 'o' && ws_optarg[0] != 'd' && ws_optarg[0] != 'n') {
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cmdarg_err("Bad argument for '-o': %s", ws_optarg);
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print_usage(stderr);
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return WS_EXIT_INVALID_OPTION;
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}
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switch (ws_optarg[0]) {
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case 'o': info->hexdump.offset_type = OFFSET_OCT; break;
|
|
case 'h': info->hexdump.offset_type = OFFSET_HEX; break;
|
|
case 'd': info->hexdump.offset_type = OFFSET_DEC; break;
|
|
case 'n': info->hexdump.offset_type = OFFSET_NONE; break;
|
|
}
|
|
break;
|
|
|
|
case 'e':
|
|
hdr_ethernet = TRUE;
|
|
if (sscanf(ws_optarg, "%x", &hdr_ethernet_proto) < 1) {
|
|
cmdarg_err("Bad argument for '-e': %s", ws_optarg);
|
|
print_usage(stderr);
|
|
return WS_EXIT_INVALID_OPTION;
|
|
}
|
|
break;
|
|
|
|
case 'E':
|
|
wtap_encap_type = wtap_name_to_encap(ws_optarg);
|
|
if (wtap_encap_type < 0) {
|
|
cmdarg_err("\"%s\" isn't a valid encapsulation type", ws_optarg);
|
|
list_encap_types();
|
|
return WS_EXIT_INVALID_OPTION;
|
|
}
|
|
break;
|
|
|
|
case 'F':
|
|
file_type_subtype = wtap_name_to_file_type_subtype(ws_optarg);
|
|
if (file_type_subtype < 0) {
|
|
cmdarg_err("\"%s\" isn't a valid capture file type", ws_optarg);
|
|
list_capture_types();
|
|
return WS_EXIT_INVALID_OPTION;
|
|
}
|
|
break;
|
|
|
|
case 'i':
|
|
{
|
|
guint8 ip_proto;
|
|
if (!ws_strtou8(ws_optarg, NULL, &ip_proto)) {
|
|
cmdarg_err("Bad argument for '-i': %s", ws_optarg);
|
|
print_usage(stderr);
|
|
return WS_EXIT_INVALID_OPTION;
|
|
}
|
|
set_hdr_ip_proto(ip_proto);
|
|
break;
|
|
}
|
|
|
|
case 'P':
|
|
hdr_export_pdu = TRUE;
|
|
info->payload = ws_optarg;
|
|
break;
|
|
|
|
case 'r':
|
|
info->mode = TEXT_IMPORT_REGEX;
|
|
if (regex != NULL) {
|
|
/* XXX: Used the option twice. Should we warn? */
|
|
g_regex_unref(regex);
|
|
}
|
|
regex = g_regex_new(ws_optarg, G_REGEX_DUPNAMES | G_REGEX_OPTIMIZE | G_REGEX_MULTILINE, G_REGEX_MATCH_NOTEMPTY, &gerror);
|
|
if (gerror) {
|
|
cmdarg_err("%s", gerror->message);
|
|
g_error_free(gerror);
|
|
print_usage(stderr);
|
|
return WS_EXIT_INVALID_OPTION;
|
|
} else {
|
|
if (g_regex_get_string_number(regex, "data") == -1) {
|
|
cmdarg_err("Regex missing capturing group data (use (?<data>(...)) )");
|
|
g_regex_unref(regex);
|
|
print_usage(stderr);
|
|
return WS_EXIT_INVALID_OPTION;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case 's':
|
|
hdr_sctp = TRUE;
|
|
hdr_data_chunk = FALSE;
|
|
hdr_tcp = FALSE;
|
|
hdr_udp = FALSE;
|
|
hdr_sctp_src = (guint32)strtol(ws_optarg, &p, 10);
|
|
if (p == ws_optarg || (*p != ',' && *p != '\0')) {
|
|
cmdarg_err("Bad src port for '-%c'", c);
|
|
print_usage(stderr);
|
|
return WS_EXIT_INVALID_OPTION;
|
|
}
|
|
if (*p == '\0') {
|
|
cmdarg_err("No dest port specified for '-%c'", c);
|
|
print_usage(stderr);
|
|
return WS_EXIT_INVALID_OPTION;
|
|
}
|
|
p++;
|
|
ws_optarg = p;
|
|
hdr_sctp_dest = (guint32)strtol(ws_optarg, &p, 10);
|
|
if (p == ws_optarg || (*p != ',' && *p != '\0')) {
|
|
cmdarg_err("Bad dest port for '-s'");
|
|
print_usage(stderr);
|
|
return WS_EXIT_INVALID_OPTION;
|
|
}
|
|
if (*p == '\0') {
|
|
cmdarg_err("No tag specified for '-%c'", c);
|
|
print_usage(stderr);
|
|
return WS_EXIT_INVALID_OPTION;
|
|
}
|
|
p++;
|
|
ws_optarg = p;
|
|
hdr_sctp_tag = (guint32)strtol(ws_optarg, &p, 10);
|
|
if (p == ws_optarg || *p != '\0') {
|
|
cmdarg_err("Bad tag for '-%c'", c);
|
|
print_usage(stderr);
|
|
return WS_EXIT_INVALID_OPTION;
|
|
}
|
|
|
|
set_hdr_ip_proto(132);
|
|
break;
|
|
|
|
case 'S':
|
|
hdr_sctp = TRUE;
|
|
hdr_data_chunk = TRUE;
|
|
hdr_tcp = FALSE;
|
|
hdr_udp = FALSE;
|
|
hdr_sctp_src = (guint32)strtol(ws_optarg, &p, 10);
|
|
if (p == ws_optarg || (*p != ',' && *p != '\0')) {
|
|
cmdarg_err("Bad src port for '-%c'", c);
|
|
print_usage(stderr);
|
|
return WS_EXIT_INVALID_OPTION;
|
|
}
|
|
if (*p == '\0') {
|
|
cmdarg_err("No dest port specified for '-%c'", c);
|
|
print_usage(stderr);
|
|
return WS_EXIT_INVALID_OPTION;
|
|
}
|
|
p++;
|
|
ws_optarg = p;
|
|
hdr_sctp_dest = (guint32)strtol(ws_optarg, &p, 10);
|
|
if (p == ws_optarg || (*p != ',' && *p != '\0')) {
|
|
cmdarg_err("Bad dest port for '-s'");
|
|
print_usage(stderr);
|
|
return WS_EXIT_INVALID_OPTION;
|
|
}
|
|
if (*p == '\0') {
|
|
cmdarg_err("No ppi specified for '-%c'", c);
|
|
print_usage(stderr);
|
|
return WS_EXIT_INVALID_OPTION;
|
|
}
|
|
p++;
|
|
ws_optarg = p;
|
|
hdr_data_chunk_ppid = (guint32)strtoul(ws_optarg, &p, 10);
|
|
if (p == ws_optarg || *p != '\0') {
|
|
cmdarg_err("Bad ppi for '-%c'", c);
|
|
print_usage(stderr);
|
|
return WS_EXIT_INVALID_OPTION;
|
|
}
|
|
|
|
set_hdr_ip_proto(132);
|
|
break;
|
|
|
|
case 't':
|
|
info->timestamp_format = ws_optarg;
|
|
if (!strcmp(ws_optarg, "ISO"))
|
|
ts_fmt_iso = 1;
|
|
break;
|
|
|
|
case 'u':
|
|
hdr_udp = TRUE;
|
|
hdr_tcp = FALSE;
|
|
hdr_sctp = FALSE;
|
|
hdr_data_chunk = FALSE;
|
|
hdr_src_port = (guint32)strtol(ws_optarg, &p, 10);
|
|
if (p == ws_optarg || (*p != ',' && *p != '\0')) {
|
|
cmdarg_err("Bad src port for '-u'");
|
|
print_usage(stderr);
|
|
return WS_EXIT_INVALID_OPTION;
|
|
}
|
|
if (*p == '\0') {
|
|
cmdarg_err("No dest port specified for '-u'");
|
|
print_usage(stderr);
|
|
return WS_EXIT_INVALID_OPTION;
|
|
}
|
|
p++;
|
|
ws_optarg = p;
|
|
hdr_dest_port = (guint32)strtol(ws_optarg, &p, 10);
|
|
if (p == ws_optarg || *p != '\0') {
|
|
cmdarg_err("Bad dest port for '-u'");
|
|
print_usage(stderr);
|
|
return WS_EXIT_INVALID_OPTION;
|
|
}
|
|
set_hdr_ip_proto(17);
|
|
break;
|
|
|
|
case 'T':
|
|
hdr_tcp = TRUE;
|
|
hdr_udp = FALSE;
|
|
hdr_sctp = FALSE;
|
|
hdr_data_chunk = FALSE;
|
|
hdr_src_port = (guint32)strtol(ws_optarg, &p, 10);
|
|
if (p == ws_optarg || (*p != ',' && *p != '\0')) {
|
|
cmdarg_err("Bad src port for '-T'");
|
|
print_usage(stderr);
|
|
return WS_EXIT_INVALID_OPTION;
|
|
}
|
|
if (*p == '\0') {
|
|
cmdarg_err("No dest port specified for '-u'");
|
|
print_usage(stderr);
|
|
return WS_EXIT_INVALID_OPTION;
|
|
}
|
|
p++;
|
|
ws_optarg = p;
|
|
hdr_dest_port = (guint32)strtol(ws_optarg, &p, 10);
|
|
if (p == ws_optarg || *p != '\0') {
|
|
cmdarg_err("Bad dest port for '-T'");
|
|
print_usage(stderr);
|
|
return WS_EXIT_INVALID_OPTION;
|
|
}
|
|
set_hdr_ip_proto(6);
|
|
break;
|
|
|
|
case 'v':
|
|
show_version();
|
|
exit(0);
|
|
break;
|
|
|
|
case '4':
|
|
case '6':
|
|
p = strchr(ws_optarg, ',');
|
|
|
|
if (!p) {
|
|
cmdarg_err("Bad source param addr for '-%c'", c);
|
|
print_usage(stderr);
|
|
return WS_EXIT_INVALID_OPTION;
|
|
}
|
|
|
|
*p = '\0';
|
|
if (c == '6')
|
|
{
|
|
hdr_ipv6 = TRUE;
|
|
hdr_ip = FALSE;
|
|
}
|
|
else
|
|
{
|
|
hdr_ip = TRUE;
|
|
hdr_ipv6 = FALSE;
|
|
}
|
|
hdr_ethernet = TRUE;
|
|
|
|
if (hdr_ipv6 == TRUE) {
|
|
if (!ws_inet_pton6(ws_optarg, &hdr_ipv6_src_addr)) {
|
|
cmdarg_err("Bad src addr -%c '%s'", c, p);
|
|
print_usage(stderr);
|
|
return WS_EXIT_INVALID_OPTION;
|
|
}
|
|
} else {
|
|
if (!ws_inet_pton4(ws_optarg, &hdr_ip_src_addr)) {
|
|
cmdarg_err("Bad src addr -%c '%s'", c, p);
|
|
print_usage(stderr);
|
|
return WS_EXIT_INVALID_OPTION;
|
|
}
|
|
}
|
|
|
|
p++;
|
|
if (*p == '\0') {
|
|
cmdarg_err("No dest addr specified for '-%c'", c);
|
|
print_usage(stderr);
|
|
return WS_EXIT_INVALID_OPTION;
|
|
}
|
|
|
|
if (hdr_ipv6 == TRUE) {
|
|
if (!ws_inet_pton6(p, &hdr_ipv6_dest_addr)) {
|
|
cmdarg_err("Bad dest addr for -%c '%s'", c, p);
|
|
print_usage(stderr);
|
|
return WS_EXIT_INVALID_OPTION;
|
|
}
|
|
} else {
|
|
if (!ws_inet_pton4(p, &hdr_ip_dest_addr)) {
|
|
cmdarg_err("Bad dest addr for -%c '%s'", c, p);
|
|
print_usage(stderr);
|
|
return WS_EXIT_INVALID_OPTION;
|
|
}
|
|
}
|
|
break;
|
|
|
|
|
|
case '?':
|
|
switch(ws_optopt) {
|
|
case 'E':
|
|
list_encap_types();
|
|
return WS_EXIT_INVALID_OPTION;
|
|
break;
|
|
case 'F':
|
|
list_capture_types();
|
|
return WS_EXIT_INVALID_OPTION;
|
|
break;
|
|
}
|
|
/* FALLTHROUGH */
|
|
|
|
default:
|
|
print_usage(stderr);
|
|
return WS_EXIT_INVALID_OPTION;
|
|
}
|
|
}
|
|
|
|
if (ws_optind >= argc || argc-ws_optind < 2) {
|
|
cmdarg_err("Must specify input and output filename");
|
|
print_usage(stderr);
|
|
return WS_EXIT_INVALID_OPTION;
|
|
}
|
|
|
|
if (max_offset > WTAP_MAX_PACKET_SIZE_STANDARD) {
|
|
cmdarg_err("Maximum packet length cannot be more than %d bytes",
|
|
WTAP_MAX_PACKET_SIZE_STANDARD);
|
|
return WS_EXIT_INVALID_OPTION;
|
|
}
|
|
|
|
/* Some validation */
|
|
|
|
if (info->mode == TEXT_IMPORT_REGEX) {
|
|
info->regex.format = regex;
|
|
/* need option for data encoding */
|
|
if (g_regex_get_string_number(regex, "dir") > -1) {
|
|
/* XXX: Add parameter(s?) to specify these? */
|
|
info->regex.in_indication = "iI<";
|
|
info->regex.out_indication = "oO>";
|
|
}
|
|
if (g_regex_get_string_number(regex, "time") > -1 && info->timestamp_format == NULL) {
|
|
cmdarg_err("Regex with <time> capturing group requires time format (-t)");
|
|
return WS_EXIT_INVALID_OPTION;
|
|
}
|
|
}
|
|
|
|
if (have_hdr_ip_proto && !(hdr_ip || hdr_ipv6)) {
|
|
/*
|
|
* If we have an IP protocol to add to the header, but neither an
|
|
* IPv4 nor an IPv6 header was specified, add an IPv4 header.
|
|
*/
|
|
hdr_ip = TRUE;
|
|
}
|
|
|
|
if (!have_hdr_ip_proto && (hdr_ip || hdr_ipv6)) {
|
|
/* if -4 or -6 option is specified without an IP protocol then fail */
|
|
cmdarg_err("IP protocol requires a next layer protocol number");
|
|
return WS_EXIT_INVALID_OPTION;
|
|
}
|
|
|
|
if ((hdr_tcp || hdr_udp || hdr_sctp) && !(hdr_ip || hdr_ipv6)) {
|
|
/*
|
|
* If TCP (-T), UDP (-u) or SCTP (-s/-S) header options are specified
|
|
* but none of IPv4 (-4) or IPv6 (-6) options then add an IPv4 header
|
|
*/
|
|
hdr_ip = TRUE;
|
|
}
|
|
|
|
if (hdr_export_pdu && wtap_encap_type != WTAP_ENCAP_WIRESHARK_UPPER_PDU) {
|
|
cmdarg_err("Export PDU (-P) requires WIRESHARK_UPPER_PDU link type (252)");
|
|
return WS_EXIT_INVALID_OPTION;
|
|
}
|
|
|
|
/* The other dummy headers require a IPv4 or IPv6 header. Allow
|
|
* encapsulation types of Ethernet (and add a Ethernet header in that
|
|
* case if we haven't already), or the appropriate raw IP types.
|
|
*/
|
|
if (hdr_ip) {
|
|
switch (wtap_encap_type) {
|
|
|
|
case (WTAP_ENCAP_ETHERNET):
|
|
hdr_ethernet = TRUE;
|
|
hdr_ethernet_proto = 0x0800;
|
|
break;
|
|
|
|
case (WTAP_ENCAP_RAW_IP):
|
|
case (WTAP_ENCAP_RAW_IP4):
|
|
break;
|
|
|
|
default:
|
|
cmdarg_err("Dummy IPv4 header not supported with encapsulation %s (%s)", wtap_encap_description(wtap_encap_type), wtap_encap_name(wtap_encap_type));
|
|
return WS_EXIT_INVALID_OPTION;
|
|
}
|
|
} else if (hdr_ipv6) {
|
|
switch (wtap_encap_type) {
|
|
|
|
case (WTAP_ENCAP_ETHERNET):
|
|
hdr_ethernet = TRUE;
|
|
hdr_ethernet_proto = 0x86DD;
|
|
break;
|
|
|
|
case (WTAP_ENCAP_RAW_IP):
|
|
case (WTAP_ENCAP_RAW_IP6):
|
|
break;
|
|
|
|
default:
|
|
cmdarg_err("Dummy IPv6 header not supported with encapsulation %s (%s)", wtap_encap_description(wtap_encap_type), wtap_encap_name(wtap_encap_type));
|
|
return WS_EXIT_INVALID_OPTION;
|
|
}
|
|
}
|
|
|
|
if (strcmp(argv[ws_optind], "-") != 0) {
|
|
input_filename = argv[ws_optind];
|
|
if (info->mode == TEXT_IMPORT_REGEX) {
|
|
info->regex.import_text_GMappedFile = g_mapped_file_new(input_filename, TRUE, &gerror);
|
|
if (gerror) {
|
|
cmdarg_err("%s", gerror->message);
|
|
g_error_free(gerror);
|
|
return WS_EXIT_OPEN_ERROR;
|
|
}
|
|
} else {
|
|
input_file = ws_fopen(input_filename, "rb");
|
|
if (!input_file) {
|
|
open_failure_message(input_filename, errno, FALSE);
|
|
return WS_EXIT_OPEN_ERROR;
|
|
}
|
|
}
|
|
} else {
|
|
if (info->mode == TEXT_IMPORT_REGEX) {
|
|
/* text_import_regex requires a memory mapped file, so this likely
|
|
* won't work, unless the user has redirected a file (not a FIFO)
|
|
* to stdin, though that's pretty silly and unnecessary.
|
|
* XXX: We could read until EOF, write it to a temp file, and then
|
|
* mmap that (ugh)?
|
|
*/
|
|
info->regex.import_text_GMappedFile = g_mapped_file_new_from_fd(0, TRUE, &gerror);
|
|
if (gerror) {
|
|
cmdarg_err("%s", gerror->message);
|
|
cmdarg_err("regex import requires memory-mapped I/O and cannot be used with terminals or pipes");
|
|
g_error_free(gerror);
|
|
return WS_EXIT_INVALID_OPTION;
|
|
}
|
|
}
|
|
input_filename = "Standard input";
|
|
input_file = stdin;
|
|
}
|
|
|
|
wtap_dump_params_init(params, NULL);
|
|
|
|
params->encap = wtap_encap_type;
|
|
params->snaplen = max_offset;
|
|
if (file_type_subtype == WTAP_FILE_TYPE_SUBTYPE_UNKNOWN) {
|
|
file_type_subtype = wtap_pcapng_file_type_subtype();
|
|
}
|
|
/* Request nanosecond precision. Most file formats only support one time
|
|
* precision and ignore this parameter (and the related options in the
|
|
* generated IDB), but it affects pcapng.
|
|
*/
|
|
params->tsprec = WTAP_TSPREC_NSEC;
|
|
if ((ret = text_import_pre_open(params, file_type_subtype, input_filename, interface_name)) != EXIT_SUCCESS) {
|
|
wtap_block_array_free(params->shb_hdrs);
|
|
if (params->idb_inf != NULL) {
|
|
wtap_block_array_free(params->idb_inf->interface_data);
|
|
}
|
|
g_free(params->idb_inf);
|
|
wtap_dump_params_cleanup(params);
|
|
return ret;
|
|
}
|
|
|
|
if (strcmp(argv[ws_optind+1], "-") != 0) {
|
|
/* Write to a file. Open the file. */
|
|
output_filename = argv[ws_optind+1];
|
|
wdh = wtap_dump_open(output_filename, file_type_subtype, WTAP_UNCOMPRESSED, params, &err, &err_info);
|
|
} else {
|
|
/* Write to the standard output. */
|
|
output_filename = "Standard output";
|
|
wdh = wtap_dump_open_stdout(file_type_subtype, WTAP_UNCOMPRESSED, params, &err, &err_info);
|
|
}
|
|
|
|
if (!wdh) {
|
|
cfile_dump_open_failure_message(output_filename, err, err_info,
|
|
file_type_subtype);
|
|
wtap_block_array_free(params->shb_hdrs);
|
|
if (params->idb_inf != NULL) {
|
|
wtap_block_array_free(params->idb_inf->interface_data);
|
|
}
|
|
g_free(params->idb_inf);
|
|
wtap_dump_params_cleanup(params);
|
|
return WS_EXIT_OPEN_ERROR;
|
|
}
|
|
|
|
info->import_text_filename = input_filename;
|
|
info->output_filename = output_filename;
|
|
info->hexdump.import_text_FILE = input_file;
|
|
|
|
info->encapsulation = wtap_encap_type;
|
|
info->wdh = wdh;
|
|
|
|
if (hdr_export_pdu) {
|
|
info->dummy_header_type = HEADER_EXPORT_PDU;
|
|
} else if (hdr_data_chunk) {
|
|
info->dummy_header_type = HEADER_SCTP_DATA;
|
|
} else if (hdr_sctp) {
|
|
info->dummy_header_type = HEADER_SCTP;
|
|
} else if (hdr_tcp) {
|
|
info->dummy_header_type = HEADER_TCP;
|
|
} else if (hdr_udp) {
|
|
info->dummy_header_type = HEADER_UDP;
|
|
} else if (hdr_ip) {
|
|
info->dummy_header_type = HEADER_IPV4;
|
|
} else if (hdr_ipv6) {
|
|
info->dummy_header_type = HEADER_IPV4;
|
|
} else if (hdr_ethernet) {
|
|
info->dummy_header_type = HEADER_ETH;
|
|
} else {
|
|
info->dummy_header_type = HEADER_NONE;
|
|
}
|
|
info->pid = hdr_ethernet_proto;
|
|
if (hdr_ip) {
|
|
info->ip_src_addr.ipv4 = hdr_ip_src_addr;
|
|
info->ip_dest_addr.ipv4 = hdr_ip_dest_addr;
|
|
} else if (hdr_ipv6) {
|
|
info->ipv6 = TRUE;
|
|
info->ip_src_addr.ipv6 = hdr_ipv6_src_addr;
|
|
info->ip_dest_addr.ipv6 = hdr_ipv6_dest_addr;
|
|
}
|
|
info->protocol = hdr_ip_proto;
|
|
if (hdr_sctp) {
|
|
info->src_port = hdr_sctp_src;
|
|
info->dst_port = hdr_sctp_dest;
|
|
} else {
|
|
info->src_port = hdr_src_port;
|
|
info->dst_port = hdr_dest_port;
|
|
}
|
|
info->tag = hdr_sctp_tag;
|
|
info->ppi = hdr_data_chunk_ppid;
|
|
|
|
info->max_frame_length = max_offset;
|
|
|
|
/* Display summary of our state */
|
|
if (!quiet) {
|
|
fprintf(stderr, "Input from: %s\n", input_filename);
|
|
fprintf(stderr, "Output to: %s\n", output_filename);
|
|
fprintf(stderr, "Output format: %s\n", wtap_file_type_subtype_name(file_type_subtype));
|
|
if (hdr_ethernet) fprintf(stderr, "Generate dummy Ethernet header: Protocol: 0x%0X\n",
|
|
hdr_ethernet_proto);
|
|
if (hdr_ip) fprintf(stderr, "Generate dummy IP header: Protocol: %u\n",
|
|
hdr_ip_proto);
|
|
if (hdr_ipv6) fprintf(stderr, "Generate dummy IPv6 header: Protocol: %u\n",
|
|
hdr_ip_proto);
|
|
if (hdr_udp) fprintf(stderr, "Generate dummy UDP header: Source port: %u. Dest port: %u\n",
|
|
hdr_src_port, hdr_dest_port);
|
|
if (hdr_tcp) fprintf(stderr, "Generate dummy TCP header: Source port: %u. Dest port: %u\n",
|
|
hdr_src_port, hdr_dest_port);
|
|
if (hdr_sctp) fprintf(stderr, "Generate dummy SCTP header: Source port: %u. Dest port: %u. Tag: %u\n",
|
|
hdr_sctp_src, hdr_sctp_dest, hdr_sctp_tag);
|
|
if (hdr_data_chunk) fprintf(stderr, "Generate dummy DATA chunk header: TSN: %u. SID: %u. SSN: %u. PPID: %u\n",
|
|
hdr_data_chunk_tsn, hdr_data_chunk_sid, hdr_data_chunk_ssn, hdr_data_chunk_ppid);
|
|
}
|
|
|
|
return EXIT_SUCCESS;
|
|
}
|
|
|
|
/*
|
|
* General errors and warnings are reported with an console message
|
|
* in text2pcap.
|
|
*/
|
|
static void
|
|
text2pcap_cmdarg_err(const char *msg_format, va_list ap)
|
|
{
|
|
fprintf(stderr, "text2pcap: ");
|
|
vfprintf(stderr, msg_format, ap);
|
|
fprintf(stderr, "\n");
|
|
}
|
|
|
|
/*
|
|
* Report additional information for an error in command-line arguments.
|
|
*/
|
|
static void
|
|
text2pcap_cmdarg_err_cont(const char *msg_format, va_list ap)
|
|
{
|
|
vfprintf(stderr, msg_format, ap);
|
|
fprintf(stderr, "\n");
|
|
}
|
|
|
|
int
|
|
main(int argc, char *argv[])
|
|
{
|
|
static const struct report_message_routines text2pcap_report_routines = {
|
|
failure_message,
|
|
failure_message,
|
|
open_failure_message,
|
|
read_failure_message,
|
|
write_failure_message,
|
|
cfile_open_failure_message,
|
|
cfile_dump_open_failure_message,
|
|
cfile_read_failure_message,
|
|
cfile_write_failure_message,
|
|
cfile_close_failure_message
|
|
};
|
|
int ret = EXIT_SUCCESS;
|
|
text_import_info_t info;
|
|
wtap_dump_params params;
|
|
guint64 bytes_written;
|
|
|
|
cmdarg_err_init(text2pcap_cmdarg_err, text2pcap_cmdarg_err_cont);
|
|
|
|
/* Initialize log handler early so we can have proper logging during startup. */
|
|
ws_log_init("text2pcap", vcmdarg_err);
|
|
|
|
/* Early logging command-line initialization. */
|
|
ws_log_parse_args(&argc, argv, vcmdarg_err, WS_EXIT_INVALID_OPTION);
|
|
|
|
ws_noisy("Finished log init and parsing command line log arguments");
|
|
|
|
#ifdef _WIN32
|
|
create_app_running_mutex();
|
|
#endif /* _WIN32 */
|
|
|
|
init_process_policies();
|
|
init_report_message("text2pcap", &text2pcap_report_routines);
|
|
wtap_init(TRUE);
|
|
|
|
memset(&info, 0, sizeof(info));
|
|
if ((ret = parse_options(argc, argv, &info, ¶ms)) != EXIT_SUCCESS) {
|
|
goto clean_exit;
|
|
}
|
|
|
|
ws_assert(input_file != NULL || info.regex.import_text_GMappedFile != NULL);
|
|
ws_assert(wdh != NULL);
|
|
|
|
ret = text_import(&info);
|
|
|
|
if (ws_log_get_level() >= LOG_LEVEL_DEBUG)
|
|
fprintf(stderr, "\n-------------------------\n");
|
|
if (!quiet) {
|
|
bytes_written = wtap_get_bytes_dumped(wdh);
|
|
fprintf(stderr, "Read %u potential packet%s, wrote %u packet%s (%" PRIu64 " byte%s including overhead).\n",
|
|
info.num_packets_read, plurality(info.num_packets_read, "", "s"),
|
|
info.num_packets_written, plurality(info.num_packets_written, "", "s"),
|
|
bytes_written, plurality(bytes_written, "", "s"));
|
|
}
|
|
clean_exit:
|
|
if (input_file) {
|
|
fclose(input_file);
|
|
}
|
|
if (info.regex.import_text_GMappedFile) {
|
|
g_mapped_file_unref(info.regex.import_text_GMappedFile);
|
|
}
|
|
if (info.regex.format) {
|
|
g_regex_unref(info.regex.format);
|
|
}
|
|
if (wdh) {
|
|
int err;
|
|
char *err_info;
|
|
if (!wtap_dump_close(wdh, NULL, &err, &err_info)) {
|
|
cfile_close_failure_message(output_filename, err, err_info);
|
|
ret = 2;
|
|
}
|
|
wtap_block_array_free(params.shb_hdrs);
|
|
if (params.idb_inf != NULL) {
|
|
wtap_block_array_free(params.idb_inf->interface_data);
|
|
}
|
|
g_free(params.idb_inf);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* Editor modelines - https://www.wireshark.org/tools/modelines.html
|
|
*
|
|
* Local variables:
|
|
* c-basic-offset: 4
|
|
* tab-width: 8
|
|
* indent-tabs-mode: nil
|
|
* End:
|
|
*
|
|
* vi: set shiftwidth=4 tabstop=8 expandtab:
|
|
* :indentSize=4:tabSize=8:noTabs=true:
|
|
*/
|