forked from osmocom/wireshark
![Guy Harris](/assets/img/avatar_default.png)
add_libssh_info() can be used by ciscodump, sshdump. and any other extcap program that uses libssh. Change-Id: I60474bd610eeb7dfb6ec07fc1aaaf19c4f745cdd Reviewed-on: https://code.wireshark.org/review/37882 Petri-Dish: Guy Harris <gharris@sonic.net> Tested-by: Petri Dish Buildbot Reviewed-by: Guy Harris <gharris@sonic.net>
740 lines
21 KiB
C
740 lines
21 KiB
C
/* ciscodump.c
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* ciscodump is extcap tool used to capture data using a ssh on a remote cisco router
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*
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* Copyright 2015, Dario Lombardo
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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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#include "config.h"
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#include <extcap/extcap-base.h>
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#include <wsutil/interface.h>
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#include <wsutil/strtoi.h>
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#include <wsutil/filesystem.h>
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#include <wsutil/privileges.h>
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#include <wsutil/please_report_bug.h>
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#include <extcap/ssh-base.h>
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#include <writecap/pcapio.h>
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#include <errno.h>
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#include <string.h>
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#include <fcntl.h>
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#include <cli_main.h>
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#define CISCODUMP_VERSION_MAJOR "1"
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#define CISCODUMP_VERSION_MINOR "0"
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#define CISCODUMP_VERSION_RELEASE "0"
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/* The read timeout in msec */
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#define CISCODUMP_READ_TIMEOUT 3000
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#define CISCODUMP_EXTCAP_INTERFACE "ciscodump"
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#define SSH_READ_BLOCK_SIZE 1024
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#define SSH_READ_TIMEOUT 10000
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#define WIRESHARK_CAPTURE_POINT "WIRESHARK_CAPTURE_POINT"
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#define WIRESHARK_CAPTURE_BUFFER "WIRESHARK_CAPTURE_BUFFER"
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#define WIRESHARK_CAPTURE_ACCESSLIST "WIRESHARK_CAPTURE_ACCESSLIST"
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#define PCAP_SNAPLEN 0xffff
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#define PACKET_MAX_SIZE 65535
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#define MINIMUM_IOS_MAJOR 12
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#define MINIMUM_IOS_MINOR 4
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/* Status of the parser */
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enum {
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CISCODUMP_PARSER_STARTING,
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CISCODUMP_PARSER_IN_PACKET,
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CISCODUMP_PARSER_IN_HEADER,
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CISCODUMP_PARSER_END_PACKET,
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CISCODUMP_PARSER_ERROR
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};
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enum {
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EXTCAP_BASE_OPTIONS_ENUM,
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OPT_HELP,
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OPT_VERSION,
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OPT_REMOTE_HOST,
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OPT_REMOTE_PORT,
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OPT_REMOTE_USERNAME,
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OPT_REMOTE_PASSWORD,
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OPT_REMOTE_INTERFACE,
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OPT_REMOTE_FILTER,
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OPT_SSHKEY,
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OPT_SSHKEY_PASSPHRASE,
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OPT_PROXYCOMMAND,
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OPT_REMOTE_COUNT
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};
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static struct option longopts[] = {
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EXTCAP_BASE_OPTIONS,
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{ "help", no_argument, NULL, OPT_HELP},
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{ "version", no_argument, NULL, OPT_VERSION},
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SSH_BASE_OPTIONS,
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{ 0, 0, 0, 0}
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};
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static char* interfaces_list_to_filter(GSList* interfaces, unsigned int remote_port)
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{
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GString* filter = g_string_new(NULL);
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GSList* cur;
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if (interfaces) {
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g_string_append_printf(filter, "deny tcp host %s any eq %u, deny tcp any eq %u host %s",
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(char*)interfaces->data, remote_port, remote_port, (char*)interfaces->data);
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cur = g_slist_next(interfaces);
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while (cur) {
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g_string_append_printf(filter, ", deny tcp host %s any eq %u, deny tcp any eq %u host %s",
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(char*)cur->data, remote_port, remote_port, (char*)cur->data);
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cur = g_slist_next(cur);
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}
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g_string_append_printf(filter, ", permit ip any any");
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}
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return g_string_free(filter, FALSE);
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}
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static char* local_interfaces_to_filter(const unsigned int remote_port)
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{
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GSList* interfaces = local_interfaces_to_list();
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char* filter = interfaces_list_to_filter(interfaces, remote_port);
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g_slist_free_full(interfaces, g_free);
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return filter;
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}
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/* Read bytes from the channel. If bytes == -1, read all data (until timeout). If outbuf != NULL, data are stored there */
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static int read_output_bytes(ssh_channel channel, int bytes, char* outbuf)
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{
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char chr;
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int total;
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int bytes_read;
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total = (bytes > 0 ? bytes : G_MAXINT);
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bytes_read = 0;
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while(ssh_channel_read_timeout(channel, &chr, 1, 0, 2000) > 0 && bytes_read < total) {
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g_debug("%c", chr);
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if (chr == '^')
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return EXIT_FAILURE;
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if (outbuf)
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outbuf[bytes_read] = chr;
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bytes_read++;
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}
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return EXIT_SUCCESS;
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}
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static void ciscodump_cleanup(ssh_session sshs, ssh_channel channel, const char* iface, const char* cfilter)
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{
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if (channel) {
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if (read_output_bytes(channel, -1, NULL) == EXIT_SUCCESS) {
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ssh_channel_printf(channel, "monitor capture point stop %s\n", WIRESHARK_CAPTURE_POINT);
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ssh_channel_printf(channel, "no monitor capture point ip cef %s %s\n", WIRESHARK_CAPTURE_POINT, iface);
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ssh_channel_printf(channel, "no monitor capture buffer %s\n", WIRESHARK_CAPTURE_BUFFER);
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if (cfilter) {
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ssh_channel_printf(channel, "configure terminal\n");
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ssh_channel_printf(channel, "no ip access-list ex %s\n", WIRESHARK_CAPTURE_ACCESSLIST);
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}
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read_output_bytes(channel, -1, NULL);
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}
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}
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ssh_cleanup(&sshs, &channel);
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}
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static int wait_until_data(ssh_channel channel, const guint32 count)
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{
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long unsigned got = 0;
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char output[SSH_READ_BLOCK_SIZE];
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char* output_ptr;
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guint rounds = 100;
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while (got < count && rounds--) {
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if (ssh_channel_printf(channel, "show monitor capture buffer %s parameters\n", WIRESHARK_CAPTURE_BUFFER) == EXIT_FAILURE) {
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g_warning("Can't write to channel");
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return EXIT_FAILURE;
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}
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if (read_output_bytes(channel, SSH_READ_BLOCK_SIZE, output) == EXIT_FAILURE)
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return EXIT_FAILURE;
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output_ptr = g_strstr_len(output, strlen(output), "Packets");
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if (!output_ptr) {
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g_warning("Error in sscanf()");
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return EXIT_FAILURE;
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} else {
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if (sscanf(output_ptr, "Packets : %lu", &got) != 1)
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return EXIT_FAILURE;
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}
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}
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g_debug("All packets got: dumping");
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return EXIT_SUCCESS;
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}
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static int parse_line(guint8* packet, unsigned* offset, char* line, int status)
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{
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char** parts;
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char** part;
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guint32 value;
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size_t size;
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if (strlen(line) <= 1) {
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if (status == CISCODUMP_PARSER_IN_PACKET)
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return CISCODUMP_PARSER_END_PACKET;
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else
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return status;
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}
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/* we got the packet header */
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/* The packet header is a line like: */
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/* 16:09:37.171 ITA Mar 18 2016 : IPv4 LES CEF : Gi0/1 None */
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if (g_regex_match_simple("^\\d{2}:\\d{2}:\\d{2}.\\d+ .*", line, (GRegexCompileFlags) (G_REGEX_CASELESS | G_REGEX_RAW), G_REGEX_MATCH_ANCHORED)) {
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return CISCODUMP_PARSER_IN_HEADER;
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}
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/* we got a line of the packet */
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/* A line looks like */
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/* <address>: <1st group> <2nd group> <3rd group> <4th group> <ascii representation> */
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/* ABCDEF01: 01020304 05060708 090A0B0C 0D0E0F10 ................ */
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/* Note that any of the 4 groups are optional and that a group can be 1 to 4 bytes long */
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parts = g_regex_split_simple(
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"^[\\dA-F]{8,8}:\\s+([\\dA-F]{2,8})\\s+([\\dA-F]{2,8}){0,1}\\s+([\\dA-F]{2,8}){0,1}\\s+([\\dA-F]{2,8}){0,1}.*",
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line, G_REGEX_CASELESS, G_REGEX_MATCH_ANCHORED);
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part = parts;
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while(*part) {
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if (strlen(*part) > 1) {
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value = (guint32)strtoul(*part, NULL, 16);
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value = ntohl(value);
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size = strlen(*part) / 2;
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memcpy(packet + *offset, &value, size);
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*offset += (guint32)size;
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}
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part++;
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}
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g_strfreev(parts);
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return CISCODUMP_PARSER_IN_PACKET;
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}
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static void ssh_loop_read(ssh_channel channel, FILE* fp, const guint32 count)
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{
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char line[SSH_READ_BLOCK_SIZE];
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char chr;
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unsigned offset = 0;
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unsigned packet_size = 0;
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guint8* packet;
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gint64 curtime = g_get_real_time();
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int err;
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guint64 bytes_written;
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long unsigned packets = 0;
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int status = CISCODUMP_PARSER_STARTING;
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/* This is big enough to put on the heap */
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packet = (guint8*)g_malloc(PACKET_MAX_SIZE);
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do {
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if (ssh_channel_read_timeout(channel, &chr, 1, FALSE, SSH_READ_TIMEOUT) == SSH_ERROR) {
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g_warning("Error reading from channel");
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g_free(packet);
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return;
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}
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if (chr != '\n') {
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line[offset] = chr;
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offset++;
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} else {
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/* Parse the current line */
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line[offset] = '\0';
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status = parse_line(packet, &packet_size, line, status);
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if (status == CISCODUMP_PARSER_END_PACKET) {
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/* dump the packet to the pcap file */
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if (!libpcap_write_packet(fp,
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(guint32)(curtime / G_USEC_PER_SEC), (guint32)(curtime % G_USEC_PER_SEC),
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packet_size, packet_size, packet, &bytes_written, &err)) {
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g_debug("Error in libpcap_write_packet(): %s", g_strerror(err));
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break;
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}
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g_debug("Dumped packet %lu size: %u", packets, packet_size);
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packet_size = 0;
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status = CISCODUMP_PARSER_STARTING;
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packets++;
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}
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offset = 0;
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}
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} while(packets < count);
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g_free(packet);
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}
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static int check_ios_version(ssh_channel channel)
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{
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gchar* cmdline = "show version | include Cisco IOS\n";
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gchar version[255];
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guint major = 0;
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guint minor = 0;
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gchar* cur;
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memset(version, 0x0, 255);
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if (ssh_channel_write(channel, cmdline, (guint32)strlen(cmdline)) == SSH_ERROR)
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return FALSE;
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if (read_output_bytes(channel, (int)strlen(cmdline), NULL) == EXIT_FAILURE)
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return FALSE;
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if (read_output_bytes(channel, 255, version) == EXIT_FAILURE)
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return FALSE;
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cur = g_strstr_len(version, strlen(version), "Version");
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if (cur) {
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cur += strlen("Version ");
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if (sscanf(cur, "%u.%u", &major, &minor) != 2)
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return FALSE;
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if ((major > MINIMUM_IOS_MAJOR) || (major == MINIMUM_IOS_MAJOR && minor >= MINIMUM_IOS_MINOR)) {
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g_debug("Current IOS Version: %u.%u", major, minor);
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if (read_output_bytes(channel, -1, NULL) == EXIT_FAILURE)
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return FALSE;
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return TRUE;
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}
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}
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g_warning("Invalid IOS version. Minimum version: 12.4, current: %u.%u", major, minor);
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return FALSE;
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}
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static ssh_channel run_capture(ssh_session sshs, const char* iface, const char* cfilter, const guint32 count)
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{
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char* cmdline = NULL;
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ssh_channel channel;
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int ret = 0;
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channel = ssh_channel_new(sshs);
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if (!channel)
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return NULL;
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if (ssh_channel_open_session(channel) != SSH_OK)
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goto error;
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if (ssh_channel_request_pty(channel) != SSH_OK)
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goto error;
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if (ssh_channel_change_pty_size(channel, 80, 24) != SSH_OK)
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goto error;
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if (ssh_channel_request_shell(channel) != SSH_OK)
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goto error;
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if (!check_ios_version(channel))
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goto error;
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if (ssh_channel_printf(channel, "terminal length 0\n") == EXIT_FAILURE)
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goto error;
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if (ssh_channel_printf(channel, "monitor capture buffer %s max-size 9500\n", WIRESHARK_CAPTURE_BUFFER) == EXIT_FAILURE)
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goto error;
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if (ssh_channel_printf(channel, "monitor capture buffer %s limit packet-count %u\n", WIRESHARK_CAPTURE_BUFFER, count) == EXIT_FAILURE)
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goto error;
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if (cfilter) {
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gchar* multiline_filter;
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gchar* chr;
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if (ssh_channel_printf(channel, "configure terminal\n") == EXIT_FAILURE)
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goto error;
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if (ssh_channel_printf(channel, "ip access-list ex %s\n", WIRESHARK_CAPTURE_ACCESSLIST) == EXIT_FAILURE)
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goto error;
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multiline_filter = g_strdup(cfilter);
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chr = multiline_filter;
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while((chr = g_strstr_len(chr, strlen(chr), ",")) != NULL) {
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chr[0] = '\n';
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g_debug("Splitting filter into multiline");
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}
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ret = ssh_channel_write(channel, multiline_filter, (uint32_t)strlen(multiline_filter));
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g_free(multiline_filter);
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if (ret == SSH_ERROR)
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goto error;
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if (ssh_channel_printf(channel, "\nend\n") == EXIT_FAILURE)
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goto error;
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if (ssh_channel_printf(channel, "monitor capture buffer %s filter access-list %s\n",
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WIRESHARK_CAPTURE_BUFFER, WIRESHARK_CAPTURE_ACCESSLIST) == EXIT_FAILURE)
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goto error;
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}
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if (ssh_channel_printf(channel, "monitor capture point ip cef %s %s both\n", WIRESHARK_CAPTURE_POINT,
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iface) == EXIT_FAILURE)
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goto error;
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if (ssh_channel_printf(channel, "monitor capture point associate %s %s \n", WIRESHARK_CAPTURE_POINT,
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WIRESHARK_CAPTURE_BUFFER) == EXIT_FAILURE)
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goto error;
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if (ssh_channel_printf(channel, "monitor capture point start %s\n", WIRESHARK_CAPTURE_POINT) == EXIT_FAILURE)
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goto error;
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if (read_output_bytes(channel, -1, NULL) == EXIT_FAILURE)
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goto error;
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if (wait_until_data(channel, count) == EXIT_FAILURE)
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goto error;
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if (read_output_bytes(channel, -1, NULL) == EXIT_FAILURE)
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goto error;
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cmdline = g_strdup_printf("show monitor capture buffer %s dump\n", WIRESHARK_CAPTURE_BUFFER);
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if (ssh_channel_printf(channel, cmdline) == EXIT_FAILURE)
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goto error;
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if (read_output_bytes(channel, (int)strlen(cmdline), NULL) == EXIT_FAILURE)
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goto error;
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g_free(cmdline);
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return channel;
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error:
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g_free(cmdline);
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g_warning("Error running ssh remote command");
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read_output_bytes(channel, -1, NULL);
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ssh_channel_close(channel);
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ssh_channel_free(channel);
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return NULL;
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}
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static int ssh_open_remote_connection(const ssh_params_t* ssh_params, const char* iface, const char* cfilter,
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const guint32 count, const char* fifo)
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{
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ssh_session sshs;
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ssh_channel channel;
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FILE* fp = stdout;
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guint64 bytes_written = 0;
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int err;
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int ret = EXIT_FAILURE;
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char* err_info = NULL;
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if (g_strcmp0(fifo, "-")) {
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/* Open or create the output file */
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fp = fopen(fifo, "wb");
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if (!fp) {
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g_warning("Error creating output file: %s", g_strerror(errno));
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return EXIT_FAILURE;
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}
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}
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sshs = create_ssh_connection(ssh_params, &err_info);
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if (!sshs) {
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g_warning("Error creating connection: %s", err_info);
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goto cleanup;
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}
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if (!libpcap_write_file_header(fp, 1, PCAP_SNAPLEN, FALSE, &bytes_written, &err)) {
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g_warning("Can't write pcap file header");
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goto cleanup;
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}
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channel = run_capture(sshs, iface, cfilter, count);
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if (!channel) {
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ret = EXIT_FAILURE;
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goto cleanup;
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}
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/* read from channel and write into fp */
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ssh_loop_read(channel, fp, count);
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/* clean up and exit */
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ciscodump_cleanup(sshs, channel, iface, cfilter);
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ret = EXIT_SUCCESS;
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cleanup:
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if (fp != stdout)
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fclose(fp);
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return ret;
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}
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static int list_config(char *interface, unsigned int remote_port)
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{
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unsigned inc = 0;
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char* ipfilter;
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if (!interface) {
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g_warning("No interface specified.");
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return EXIT_FAILURE;
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}
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if (g_strcmp0(interface, CISCODUMP_EXTCAP_INTERFACE)) {
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g_warning("interface must be %s", CISCODUMP_EXTCAP_INTERFACE);
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return EXIT_FAILURE;
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}
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ipfilter = local_interfaces_to_filter(remote_port);
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printf("arg {number=%u}{call=--remote-host}{display=Remote SSH server address}"
|
|
"{type=string}{tooltip=The remote SSH host. It can be both "
|
|
"an IP address or a hostname}{required=true}{group=Server}\n", inc++);
|
|
printf("arg {number=%u}{call=--remote-port}{display=Remote SSH server port}"
|
|
"{type=unsigned}{default=22}{tooltip=The remote SSH host port (1-65535)}"
|
|
"{range=1,65535}{group=Server}\n", inc++);
|
|
printf("arg {number=%u}{call=--remote-username}{display=Remote SSH server username}"
|
|
"{type=string}{default=%s}{tooltip=The remote SSH username. If not provided, "
|
|
"the current user will be used}{group=Authentication}\n", inc++, g_get_user_name());
|
|
printf("arg {number=%u}{call=--remote-password}{display=Remote SSH server password}"
|
|
"{type=password}{tooltip=The SSH password, used when other methods (SSH agent "
|
|
"or key files) are unavailable.}{group=Authentication}\n", inc++);
|
|
printf("arg {number=%u}{call=--sshkey}{display=Path to SSH private key}"
|
|
"{type=fileselect}{tooltip=The path on the local filesystem of the private ssh key}"
|
|
"{group=Authentication}\n", inc++);
|
|
printf("arg {number=%u}{call=--proxycommand}{display=ProxyCommand}"
|
|
"{type=string}{tooltip=The command to use as proxy for the SSH connection}"
|
|
"{group=Authentication}\n", inc++);
|
|
printf("arg {number=%u}{call--sshkey-passphrase}{display=SSH key passphrase}"
|
|
"{type=password}{tooltip=Passphrase to unlock the SSH private key}"
|
|
"{group=Authentication\n", inc++);
|
|
printf("arg {number=%u}{call=--remote-interface}{display=Remote interface}"
|
|
"{type=string}{required=true}{tooltip=The remote network interface used for capture"
|
|
"}{group=Capture}\n", inc++);
|
|
printf("arg {number=%u}{call=--remote-filter}{display=Remote capture filter}"
|
|
"{type=string}{tooltip=The remote capture filter}", inc++);
|
|
if (ipfilter)
|
|
printf("{default=%s}", ipfilter);
|
|
printf("{group=Capture}\n");
|
|
printf("arg {number=%u}{call=--remote-count}{display=Packets to capture}"
|
|
"{type=unsigned}{required=true}{tooltip=The number of remote packets to capture.}"
|
|
"{group=Capture}\n", inc++);
|
|
|
|
extcap_config_debug(&inc);
|
|
|
|
g_free(ipfilter);
|
|
|
|
return EXIT_SUCCESS;
|
|
}
|
|
|
|
int main(int argc, char *argv[])
|
|
{
|
|
char* err_msg;
|
|
int result;
|
|
int option_idx = 0;
|
|
ssh_params_t* ssh_params = ssh_params_new();
|
|
char* remote_interface = NULL;
|
|
char* remote_filter = NULL;
|
|
guint32 count = 0;
|
|
int ret = EXIT_FAILURE;
|
|
extcap_parameters * extcap_conf = g_new0(extcap_parameters, 1);
|
|
char* help_url;
|
|
char* help_header = NULL;
|
|
|
|
/*
|
|
* Get credential information for later use.
|
|
*/
|
|
init_process_policies();
|
|
|
|
/*
|
|
* Attempt to get the pathname of the directory containing the
|
|
* executable file.
|
|
*/
|
|
err_msg = init_progfile_dir(argv[0]);
|
|
if (err_msg != NULL) {
|
|
g_warning("Can't get pathname of directory containing the captype program: %s.",
|
|
err_msg);
|
|
g_free(err_msg);
|
|
}
|
|
|
|
help_url = data_file_url("ciscodump.html");
|
|
extcap_base_set_util_info(extcap_conf, argv[0], CISCODUMP_VERSION_MAJOR, CISCODUMP_VERSION_MINOR,
|
|
CISCODUMP_VERSION_RELEASE, help_url);
|
|
add_libssh_info(extcap_conf);
|
|
g_free(help_url);
|
|
extcap_base_register_interface(extcap_conf, CISCODUMP_EXTCAP_INTERFACE, "Cisco remote capture", 147, "Remote capture dependent DLT");
|
|
|
|
help_header = g_strdup_printf(
|
|
" %s --extcap-interfaces\n"
|
|
" %s --extcap-interface=%s --extcap-dlts\n"
|
|
" %s --extcap-interface=%s --extcap-config\n"
|
|
" %s --extcap-interface=%s --remote-host myhost --remote-port 22222 "
|
|
"--remote-username myuser --remote-interface gigabit0/0 "
|
|
"--fifo=FILENAME --capture\n", argv[0], argv[0], CISCODUMP_EXTCAP_INTERFACE, argv[0],
|
|
CISCODUMP_EXTCAP_INTERFACE, argv[0], CISCODUMP_EXTCAP_INTERFACE);
|
|
extcap_help_add_header(extcap_conf, help_header);
|
|
g_free(help_header);
|
|
|
|
extcap_help_add_option(extcap_conf, "--help", "print this help");
|
|
extcap_help_add_option(extcap_conf, "--version", "print the version");
|
|
extcap_help_add_option(extcap_conf, "--remote-host <host>", "the remote SSH host");
|
|
extcap_help_add_option(extcap_conf, "--remote-port <port>", "the remote SSH port (default: 22)");
|
|
extcap_help_add_option(extcap_conf, "--remote-username <username>", "the remote SSH username (default: the current user)");
|
|
extcap_help_add_option(extcap_conf, "--remote-password <password>", "the remote SSH password. "
|
|
"If not specified, ssh-agent and ssh-key are used");
|
|
extcap_help_add_option(extcap_conf, "--sshkey <public key path>", "the path of the ssh key");
|
|
extcap_help_add_option(extcap_conf, "--sshkey-passphrase <public key passphrase>", "the passphrase to unlock public ssh");
|
|
extcap_help_add_option(extcap_conf, "--proxycommand <proxy command>", "the command to use as proxy the the ssh connection");
|
|
extcap_help_add_option(extcap_conf, "--remote-interface <iface>", "the remote capture interface");
|
|
extcap_help_add_option(extcap_conf, "--remote-filter <filter>", "a filter for remote capture "
|
|
"(default: don't capture data for lal interfaces IPs)");
|
|
|
|
opterr = 0;
|
|
optind = 0;
|
|
|
|
if (argc == 1) {
|
|
extcap_help_print(extcap_conf);
|
|
goto end;
|
|
}
|
|
|
|
while ((result = getopt_long(argc, argv, ":", longopts, &option_idx)) != -1) {
|
|
|
|
switch (result) {
|
|
|
|
case OPT_HELP:
|
|
extcap_help_print(extcap_conf);
|
|
ret = EXIT_SUCCESS;
|
|
goto end;
|
|
|
|
case OPT_VERSION:
|
|
extcap_version_print(extcap_conf);
|
|
goto end;
|
|
|
|
case OPT_REMOTE_HOST:
|
|
g_free(ssh_params->host);
|
|
ssh_params->host = g_strdup(optarg);
|
|
break;
|
|
|
|
case OPT_REMOTE_PORT:
|
|
if (!ws_strtou16(optarg, NULL, &ssh_params->port) || ssh_params->port == 0) {
|
|
g_warning("Invalid port: %s", optarg);
|
|
goto end;
|
|
}
|
|
break;
|
|
|
|
case OPT_REMOTE_USERNAME:
|
|
g_free(ssh_params->username);
|
|
ssh_params->username = g_strdup(optarg);
|
|
break;
|
|
|
|
case OPT_REMOTE_PASSWORD:
|
|
g_free(ssh_params->password);
|
|
ssh_params->password = g_strdup(optarg);
|
|
memset(optarg, 'X', strlen(optarg));
|
|
break;
|
|
|
|
case OPT_SSHKEY:
|
|
g_free(ssh_params->sshkey_path);
|
|
ssh_params->sshkey_path = g_strdup(optarg);
|
|
break;
|
|
|
|
case OPT_SSHKEY_PASSPHRASE:
|
|
g_free(ssh_params->sshkey_passphrase);
|
|
ssh_params->sshkey_passphrase = g_strdup(optarg);
|
|
memset(optarg, 'X', strlen(optarg));
|
|
break;
|
|
|
|
case OPT_PROXYCOMMAND:
|
|
g_free(ssh_params->proxycommand);
|
|
ssh_params->proxycommand = g_strdup(optarg);
|
|
break;
|
|
|
|
case OPT_REMOTE_INTERFACE:
|
|
g_free(remote_interface);
|
|
remote_interface = g_strdup(optarg);
|
|
break;
|
|
|
|
case OPT_REMOTE_FILTER:
|
|
g_free(remote_filter);
|
|
remote_filter = g_strdup(optarg);
|
|
break;
|
|
|
|
case OPT_REMOTE_COUNT:
|
|
if (!ws_strtou32(optarg, NULL, &count)) {
|
|
g_warning("Invalid packet count: %s", optarg);
|
|
goto end;
|
|
}
|
|
break;
|
|
|
|
case ':':
|
|
/* missing option argument */
|
|
g_warning("Option '%s' requires an argument", argv[optind - 1]);
|
|
break;
|
|
|
|
default:
|
|
if (!extcap_base_parse_options(extcap_conf, result - EXTCAP_OPT_LIST_INTERFACES, optarg)) {
|
|
g_warning("Invalid option: %s", argv[optind - 1]);
|
|
goto end;
|
|
}
|
|
}
|
|
}
|
|
|
|
extcap_cmdline_debug(argv, argc);
|
|
|
|
if (optind != argc) {
|
|
g_warning("Unexpected extra option: %s", argv[optind]);
|
|
goto end;
|
|
}
|
|
|
|
if (extcap_base_handle_interface(extcap_conf)) {
|
|
ret = EXIT_SUCCESS;
|
|
goto end;
|
|
}
|
|
|
|
if (extcap_conf->show_config) {
|
|
ret = list_config(extcap_conf->interface, ssh_params->port);
|
|
goto end;
|
|
}
|
|
|
|
err_msg = ws_init_sockets();
|
|
if (err_msg != NULL) {
|
|
g_warning("ERROR: %s", err_msg);
|
|
g_free(err_msg);
|
|
g_warning("%s", please_report_bug());
|
|
goto end;
|
|
}
|
|
|
|
if (extcap_conf->capture) {
|
|
if (!ssh_params->host) {
|
|
g_warning("Missing parameter: --remote-host");
|
|
goto end;
|
|
}
|
|
|
|
if (!remote_interface) {
|
|
g_warning("ERROR: No interface specified (--remote-interface)");
|
|
goto end;
|
|
}
|
|
if (count == 0) {
|
|
g_warning("ERROR: count of packets must be specified (--remote-count)");
|
|
goto end;
|
|
}
|
|
ssh_params->debug = extcap_conf->debug;
|
|
ret = ssh_open_remote_connection(ssh_params, remote_interface,
|
|
remote_filter, count, extcap_conf->fifo);
|
|
} else {
|
|
g_debug("You should not come here... maybe some parameter missing?");
|
|
ret = EXIT_FAILURE;
|
|
}
|
|
|
|
end:
|
|
ssh_params_free(ssh_params);
|
|
g_free(remote_interface);
|
|
g_free(remote_filter);
|
|
extcap_base_cleanup(&extcap_conf);
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* Editor modelines - https://www.wireshark.org/tools/modelines.html
|
|
*
|
|
* Local variables:
|
|
* c-basic-offset: 8
|
|
* tab-width: 8
|
|
* indent-tabs-mode: t
|
|
* End:
|
|
*
|
|
* vi: set shiftwidth=8 tabstop=8 noexpandtab:
|
|
* :indentSize=8:tabSize=8:noTabs=false:
|
|
*/
|