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wireshark/capture_opts.c

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/* capture_opts.c
* Routines for capture options setting
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#ifdef HAVE_LIBPCAP
#include <string.h>
#include <errno.h>
#include <glib.h>
#include <ws_exit_codes.h>
#include "capture_opts.h"
#include "ringbuffer.h"
#include <wsutil/clopts_common.h>
#include <wsutil/cmdarg_err.h>
#include <wsutil/file_util.h>
#include <wsutil/ws_pipe.h>
#include <wsutil/ws_assert.h>
#include <wsutil/filter_files.h>
#include "capture/capture_ifinfo.h"
#include "capture/capture-pcap-util.h"
static gboolean capture_opts_output_to_pipe(const char *save_file, gboolean *is_pipe);
void
capture_opts_init(capture_options *capture_opts)
{
capture_opts->ifaces = g_array_new(FALSE, FALSE, sizeof(interface_options));
capture_opts->all_ifaces = g_array_new(FALSE, FALSE, sizeof(interface_t));
capture_opts->num_selected = 0;
capture_opts->default_options.name = NULL;
capture_opts->default_options.descr = NULL;
capture_opts->default_options.ifname = NULL;
capture_opts->default_options.hardware = NULL;
capture_opts->default_options.display_name = NULL;
capture_opts->default_options.cfilter = NULL;
capture_opts->default_options.has_snaplen = FALSE;
capture_opts->default_options.snaplen = WTAP_MAX_PACKET_SIZE_STANDARD;
capture_opts->default_options.linktype = -1; /* use interface default */
capture_opts->default_options.promisc_mode = TRUE;
capture_opts->default_options.if_type = IF_WIRED;
capture_opts->default_options.extcap = NULL;
capture_opts->default_options.extcap_fifo = NULL;
capture_opts->default_options.extcap_args = NULL;
capture_opts->default_options.extcap_pid = WS_INVALID_PID;
capture_opts->default_options.extcap_pipedata = NULL;
capture_opts->default_options.extcap_stderr = NULL;
capture_opts->default_options.extcap_stdout_watch = 0;
capture_opts->default_options.extcap_stderr_watch = 0;
#ifdef _WIN32
capture_opts->default_options.extcap_pipe_h = INVALID_HANDLE_VALUE;
capture_opts->default_options.extcap_control_in_h = INVALID_HANDLE_VALUE;
capture_opts->default_options.extcap_control_out_h = INVALID_HANDLE_VALUE;
#endif
capture_opts->default_options.extcap_control_in = NULL;
capture_opts->default_options.extcap_control_out = NULL;
#ifdef CAN_SET_CAPTURE_BUFFER_SIZE
capture_opts->default_options.buffer_size = DEFAULT_CAPTURE_BUFFER_SIZE;
#endif
capture_opts->default_options.monitor_mode = FALSE;
#ifdef HAVE_PCAP_REMOTE
capture_opts->default_options.src_type = CAPTURE_IFLOCAL;
capture_opts->default_options.remote_host = NULL;
capture_opts->default_options.remote_port = NULL;
capture_opts->default_options.auth_type = CAPTURE_AUTH_NULL;
capture_opts->default_options.auth_username = NULL;
capture_opts->default_options.auth_password = NULL;
capture_opts->default_options.datatx_udp = FALSE;
capture_opts->default_options.nocap_rpcap = TRUE;
capture_opts->default_options.nocap_local = FALSE;
#endif
#ifdef HAVE_PCAP_SETSAMPLING
capture_opts->default_options.sampling_method = CAPTURE_SAMP_NONE;
capture_opts->default_options.sampling_param = 0;
#endif
capture_opts->default_options.timestamp_type = NULL;
capture_opts->saving_to_file = FALSE;
capture_opts->save_file = NULL;
capture_opts->group_read_access = FALSE;
capture_opts->use_pcapng = TRUE; /* Save as pcapng by default */
capture_opts->real_time_mode = TRUE;
capture_opts->show_info = TRUE;
capture_opts->restart = FALSE;
capture_opts->orig_save_file = NULL;
capture_opts->multi_files_on = FALSE;
capture_opts->has_file_duration = FALSE;
capture_opts->file_duration = 60.0; /* 1 min */
capture_opts->has_file_interval = FALSE;
capture_opts->has_nametimenum = FALSE;
capture_opts->file_interval = 60; /* 1 min */
capture_opts->has_file_packets = FALSE;
capture_opts->file_packets = 0;
capture_opts->has_ring_num_files = FALSE;
capture_opts->ring_num_files = RINGBUFFER_MIN_NUM_FILES;
capture_opts->has_autostop_files = FALSE;
capture_opts->autostop_files = 1;
capture_opts->has_autostop_packets = FALSE;
capture_opts->autostop_packets = 0;
capture_opts->has_autostop_written_packets = FALSE;
capture_opts->autostop_written_packets = 0;
capture_opts->has_autostop_filesize = FALSE;
capture_opts->autostop_filesize = 1000; /* 1 MB */
capture_opts->has_autostop_duration = FALSE;
capture_opts->autostop_duration = 60.0; /* 1 min */
capture_opts->output_to_pipe = FALSE;
capture_opts->capture_child = FALSE;
capture_opts->stop_after_extcaps = FALSE;
capture_opts->wait_for_extcap_cbs = FALSE;
capture_opts->print_file_names = FALSE;
capture_opts->print_name_to = NULL;
capture_opts->temp_dir = NULL;
capture_opts->compress_type = NULL;
capture_opts->closed_msg = NULL;
capture_opts->extcap_terminate_id = 0;
}
void
capture_opts_cleanup(capture_options *capture_opts)
{
if (!capture_opts)
return;
if (capture_opts->ifaces) {
while (capture_opts->ifaces->len > 0) {
capture_opts_del_iface(capture_opts, 0);
}
g_array_free(capture_opts->ifaces, TRUE);
capture_opts->ifaces = NULL;
}
if (capture_opts->all_ifaces) {
while (capture_opts->all_ifaces->len > 0) {
interface_t *device = &g_array_index(capture_opts->all_ifaces, interface_t, 0);
capture_opts_free_interface_t(device);
capture_opts->all_ifaces = g_array_remove_index(capture_opts->all_ifaces, 0);
}
g_array_free(capture_opts->all_ifaces, TRUE);
capture_opts->all_ifaces = NULL;
}
g_free(capture_opts->save_file);
g_free(capture_opts->temp_dir);
if (capture_opts->closed_msg) {
g_free(capture_opts->closed_msg);
capture_opts->closed_msg = NULL;
}
if (capture_opts->extcap_terminate_id > 0) {
g_source_remove(capture_opts->extcap_terminate_id);
capture_opts->extcap_terminate_id = 0;
}
}
/* log content of capture_opts */
void
capture_opts_log(const char *log_domain, enum ws_log_level log_level, capture_options *capture_opts) {
guint i;
ws_log(log_domain, log_level, "CAPTURE OPTIONS :");
for (i = 0; i < capture_opts->ifaces->len; i++) {
interface_options *interface_opts;
interface_opts = &g_array_index(capture_opts->ifaces, interface_options, i);
ws_log(log_domain, log_level, "Interface name[%02d] : %s", i, interface_opts->name ? interface_opts->name : "(unspecified)");
ws_log(log_domain, log_level, "Interface description[%02d] : %s", i, interface_opts->descr ? interface_opts->descr : "(unspecified)");
ws_log(log_domain, log_level, "Interface vendor description[%02d] : %s", i, interface_opts->hardware ? interface_opts->hardware : "(unspecified)");
ws_log(log_domain, log_level, "Display name[%02d]: %s", i, interface_opts->display_name ? interface_opts->display_name : "(unspecified)");
ws_log(log_domain, log_level, "Capture filter[%02d] : %s", i, interface_opts->cfilter ? interface_opts->cfilter : "(unspecified)");
ws_log(log_domain, log_level, "Snap length[%02d] (%u) : %d", i, interface_opts->has_snaplen, interface_opts->snaplen);
ws_log(log_domain, log_level, "Link Type[%02d] : %d", i, interface_opts->linktype);
ws_log(log_domain, log_level, "Promiscuous Mode[%02d]: %s", i, interface_opts->promisc_mode?"TRUE":"FALSE");
ws_log(log_domain, log_level, "Extcap[%02d] : %s", i, interface_opts->extcap ? interface_opts->extcap : "(unspecified)");
ws_log(log_domain, log_level, "Extcap FIFO[%02d] : %s", i, interface_opts->extcap_fifo ? interface_opts->extcap_fifo : "(unspecified)");
ws_log(log_domain, log_level, "Extcap PID[%02d] : %"PRIdMAX, i, (intmax_t)interface_opts->extcap_pid);
#ifdef CAN_SET_CAPTURE_BUFFER_SIZE
ws_log(log_domain, log_level, "Buffer size[%02d] : %d (MB)", i, interface_opts->buffer_size);
#endif
ws_log(log_domain, log_level, "Monitor Mode[%02d] : %s", i, interface_opts->monitor_mode?"TRUE":"FALSE");
#ifdef HAVE_PCAP_REMOTE
ws_log(log_domain, log_level, "Capture source[%02d] : %s", i,
interface_opts->src_type == CAPTURE_IFLOCAL ? "Local interface" :
interface_opts->src_type == CAPTURE_IFREMOTE ? "Remote interface" :
"Unknown");
if (interface_opts->src_type == CAPTURE_IFREMOTE) {
ws_log(log_domain, log_level, "Remote host[%02d] : %s", i, interface_opts->remote_host ? interface_opts->remote_host : "(unspecified)");
ws_log(log_domain, log_level, "Remote port[%02d] : %s", i, interface_opts->remote_port ? interface_opts->remote_port : "(unspecified)");
}
ws_log(log_domain, log_level, "Authentication[%02d] : %s", i,
interface_opts->auth_type == CAPTURE_AUTH_NULL ? "Null" :
interface_opts->auth_type == CAPTURE_AUTH_PWD ? "By username/password" :
"Unknown");
if (interface_opts->auth_type == CAPTURE_AUTH_PWD) {
ws_log(log_domain, log_level, "Auth username[%02d] : %s", i, interface_opts->auth_username ? interface_opts->auth_username : "(unspecified)");
ws_log(log_domain, log_level, "Auth password[%02d] : <hidden>", i);
}
ws_log(log_domain, log_level, "UDP data tfer[%02d] : %u", i, interface_opts->datatx_udp);
ws_log(log_domain, log_level, "No cap. RPCAP[%02d] : %u", i, interface_opts->nocap_rpcap);
ws_log(log_domain, log_level, "No cap. local[%02d] : %u", i, interface_opts->nocap_local);
#endif
#ifdef HAVE_PCAP_SETSAMPLING
ws_log(log_domain, log_level, "Sampling meth.[%02d] : %d", i, interface_opts->sampling_method);
ws_log(log_domain, log_level, "Sampling param.[%02d] : %d", i, interface_opts->sampling_param);
#endif
ws_log(log_domain, log_level, "Timestamp type [%02d] : %s", i, interface_opts->timestamp_type);
}
ws_log(log_domain, log_level, "Interface name[df] : %s", capture_opts->default_options.name ? capture_opts->default_options.name : "(unspecified)");
ws_log(log_domain, log_level, "Interface Descr[df] : %s", capture_opts->default_options.descr ? capture_opts->default_options.descr : "(unspecified)");
ws_log(log_domain, log_level, "Interface Hardware Descr[df] : %s", capture_opts->default_options.hardware ? capture_opts->default_options.hardware : "(unspecified)");
ws_log(log_domain, log_level, "Interface display name[df] : %s", capture_opts->default_options.display_name ? capture_opts->default_options.display_name : "(unspecified)");
ws_log(log_domain, log_level, "Capture filter[df] : %s", capture_opts->default_options.cfilter ? capture_opts->default_options.cfilter : "(unspecified)");
ws_log(log_domain, log_level, "Snap length[df] (%u) : %d", capture_opts->default_options.has_snaplen, capture_opts->default_options.snaplen);
ws_log(log_domain, log_level, "Link Type[df] : %d", capture_opts->default_options.linktype);
ws_log(log_domain, log_level, "Promiscuous Mode[df]: %s", capture_opts->default_options.promisc_mode?"TRUE":"FALSE");
ws_log(log_domain, log_level, "Extcap[df] : %s", capture_opts->default_options.extcap ? capture_opts->default_options.extcap : "(unspecified)");
ws_log(log_domain, log_level, "Extcap FIFO[df] : %s", capture_opts->default_options.extcap_fifo ? capture_opts->default_options.extcap_fifo : "(unspecified)");
#ifdef CAN_SET_CAPTURE_BUFFER_SIZE
ws_log(log_domain, log_level, "Buffer size[df] : %d (MB)", capture_opts->default_options.buffer_size);
#endif
ws_log(log_domain, log_level, "Monitor Mode[df] : %s", capture_opts->default_options.monitor_mode?"TRUE":"FALSE");
#ifdef HAVE_PCAP_REMOTE
ws_log(log_domain, log_level, "Capture source[df] : %s",
capture_opts->default_options.src_type == CAPTURE_IFLOCAL ? "Local interface" :
capture_opts->default_options.src_type == CAPTURE_IFREMOTE ? "Remote interface" :
"Unknown");
if (capture_opts->default_options.src_type == CAPTURE_IFREMOTE) {
ws_log(log_domain, log_level, "Remote host[df] : %s", capture_opts->default_options.remote_host ? capture_opts->default_options.remote_host : "(unspecified)");
ws_log(log_domain, log_level, "Remote port[df] : %s", capture_opts->default_options.remote_port ? capture_opts->default_options.remote_port : "(unspecified)");
}
ws_log(log_domain, log_level, "Authentication[df] : %s",
capture_opts->default_options.auth_type == CAPTURE_AUTH_NULL ? "Null" :
capture_opts->default_options.auth_type == CAPTURE_AUTH_PWD ? "By username/password" :
"Unknown");
if (capture_opts->default_options.auth_type == CAPTURE_AUTH_PWD) {
ws_log(log_domain, log_level, "Auth username[df] : %s", capture_opts->default_options.auth_username ? capture_opts->default_options.auth_username : "(unspecified)");
ws_log(log_domain, log_level, "Auth password[df] : <hidden>");
}
ws_log(log_domain, log_level, "UDP data tfer[df] : %u", capture_opts->default_options.datatx_udp);
ws_log(log_domain, log_level, "No cap. RPCAP[df] : %u", capture_opts->default_options.nocap_rpcap);
ws_log(log_domain, log_level, "No cap. local[df] : %u", capture_opts->default_options.nocap_local);
#endif
#ifdef HAVE_PCAP_SETSAMPLING
ws_log(log_domain, log_level, "Sampling meth. [df] : %d", capture_opts->default_options.sampling_method);
ws_log(log_domain, log_level, "Sampling param.[df] : %d", capture_opts->default_options.sampling_param);
#endif
ws_log(log_domain, log_level, "Timestamp type [df] : %s", capture_opts->default_options.timestamp_type ? capture_opts->default_options.timestamp_type : "(unspecified)");
ws_log(log_domain, log_level, "SavingToFile : %u", capture_opts->saving_to_file);
ws_log(log_domain, log_level, "SaveFile : %s", (capture_opts->save_file) ? capture_opts->save_file : "");
ws_log(log_domain, log_level, "GroupReadAccess : %u", capture_opts->group_read_access);
ws_log(log_domain, log_level, "Fileformat : %s", (capture_opts->use_pcapng) ? "PCAPNG" : "PCAP");
ws_log(log_domain, log_level, "RealTimeMode : %u", capture_opts->real_time_mode);
ws_log(log_domain, log_level, "ShowInfo : %u", capture_opts->show_info);
ws_log(log_domain, log_level, "MultiFilesOn : %u", capture_opts->multi_files_on);
ws_log(log_domain, log_level, "FileDuration (%u) : %.3f", capture_opts->has_file_duration, capture_opts->file_duration);
ws_log(log_domain, log_level, "FileInterval (%u) : %u", capture_opts->has_file_interval, capture_opts->file_interval);
ws_log(log_domain, log_level, "FilePackets (%u) : %u", capture_opts->has_file_packets, capture_opts->file_packets);
ws_log(log_domain, log_level, "FileNameType : %s", (capture_opts->has_nametimenum) ? "prefix_time_num.suffix" : "prefix_num_time.suffix");
ws_log(log_domain, log_level, "RingNumFiles (%u) : %u", capture_opts->has_ring_num_files, capture_opts->ring_num_files);
ws_log(log_domain, log_level, "RingPrintFiles (%u) : %s", capture_opts->print_file_names, (capture_opts->print_file_names ? capture_opts->print_name_to : ""));
ws_log(log_domain, log_level, "AutostopFiles (%u) : %u", capture_opts->has_autostop_files, capture_opts->autostop_files);
ws_log(log_domain, log_level, "AutostopPackets (%u) : %u", capture_opts->has_autostop_packets, capture_opts->autostop_packets);
ws_log(log_domain, log_level, "AutostopWrittenPackets (%u) : %u", capture_opts->has_autostop_written_packets, capture_opts->autostop_written_packets);
ws_log(log_domain, log_level, "AutostopFilesize(%u) : %u (KB)", capture_opts->has_autostop_filesize, capture_opts->autostop_filesize);
ws_log(log_domain, log_level, "AutostopDuration(%u) : %.3f", capture_opts->has_autostop_duration, capture_opts->autostop_duration);
ws_log(log_domain, log_level, "Temporary Directory : %s", capture_opts->temp_dir && capture_opts->temp_dir[0] ? capture_opts->temp_dir : g_get_tmp_dir());
}
/*
* Given a string of the form "<autostop criterion>:<value>", as might appear
* as an argument to a "-a" option, parse it and set the criterion in
* question. Return an indication of whether it succeeded or failed
* in some fashion.
*/
static gboolean
set_autostop_criterion(capture_options *capture_opts, const char *autostoparg)
{
gchar *p, *colonp;
colonp = strchr(autostoparg, ':');
if (colonp == NULL)
return FALSE;
p = colonp;
*p++ = '\0';
/*
* Skip over any white space (there probably won't be any, but
* as we allow it in the preferences file, we might as well
* allow it here).
*/
while (g_ascii_isspace(*p))
p++;
if (*p == '\0') {
/*
* Put the colon back, so if our caller uses, in an
* error message, the string they passed us, the message
* looks correct.
*/
*colonp = ':';
return FALSE;
}
if (strcmp(autostoparg,"duration") == 0) {
capture_opts->has_autostop_duration = TRUE;
capture_opts->autostop_duration = get_positive_double(p,"autostop duration");
} else if (strcmp(autostoparg,"filesize") == 0) {
capture_opts->has_autostop_filesize = TRUE;
capture_opts->autostop_filesize = get_nonzero_guint32(p,"autostop filesize");
} else if (strcmp(autostoparg,"files") == 0) {
capture_opts->multi_files_on = TRUE;
capture_opts->has_autostop_files = TRUE;
capture_opts->autostop_files = get_positive_int(p,"autostop files");
} else if (strcmp(autostoparg,"packets") == 0) {
capture_opts->has_autostop_written_packets = TRUE;
capture_opts->autostop_written_packets = get_positive_int(p,"packet write count");
} else {
return FALSE;
}
*colonp = ':'; /* put the colon back */
return TRUE;
}
static gboolean get_filter_arguments(capture_options* capture_opts, const char* arg)
{
char* colonp;
char* val;
char* filter_exp = NULL;
colonp = strchr(arg, ':');
if (colonp) {
val = colonp;
*val = '\0';
val++;
if (strcmp(arg, "predef") == 0) {
GList* filterItem;
filterItem = get_filter_list_first(CFILTER_LIST);
while (filterItem != NULL) {
filter_def *filterDef;
filterDef = (filter_def*)filterItem->data;
if (strcmp(val, filterDef->name) == 0) {
filter_exp = g_strdup(filterDef->strval);
break;
}
filterItem = filterItem->next;
}
}
}
if (filter_exp == NULL) {
/* No filter expression found yet; fallback to previous implemention
and assume the arg contains a filter expression */
if (colonp) {
*colonp = ':'; /* restore colon */
}
filter_exp = g_strdup(arg);
}
if (capture_opts->ifaces->len > 0) {
interface_options *interface_opts;
interface_opts = &g_array_index(capture_opts->ifaces, interface_options, capture_opts->ifaces->len - 1);
g_free(interface_opts->cfilter);
interface_opts->cfilter = filter_exp;
return TRUE;
}
else {
g_free(capture_opts->default_options.cfilter);
capture_opts->default_options.cfilter = filter_exp;
return TRUE;
}
}
/*
* Given a string of the form "<ring buffer file>:<duration>", as might appear
* as an argument to a "-b" option, parse it and set the arguments in
* question. Return an indication of whether it succeeded or failed
* in some fashion.
*/
static gboolean
get_ring_arguments(capture_options *capture_opts, const char *arg)
{
gchar *p = NULL, *colonp;
colonp = strchr(arg, ':');
if (colonp == NULL)
return FALSE;
p = colonp;
*p++ = '\0';
/*
* Skip over any white space (there probably won't be any, but
* as we allow it in the preferences file, we might as well
* allow it here).
*/
while (g_ascii_isspace(*p))
p++;
if (*p == '\0') {
/*
* Put the colon back, so if our caller uses, in an
* error message, the string they passed us, the message
* looks correct.
*/
*colonp = ':';
return FALSE;
}
if (strcmp(arg,"files") == 0) {
capture_opts->has_ring_num_files = TRUE;
capture_opts->ring_num_files = get_nonzero_guint32(p, "number of ring buffer files");
} else if (strcmp(arg,"filesize") == 0) {
capture_opts->has_autostop_filesize = TRUE;
capture_opts->autostop_filesize = get_nonzero_guint32(p, "ring buffer filesize");
} else if (strcmp(arg,"duration") == 0) {
capture_opts->has_file_duration = TRUE;
capture_opts->file_duration = get_positive_double(p, "ring buffer duration");
} else if (strcmp(arg,"interval") == 0) {
capture_opts->has_file_interval = TRUE;
capture_opts->file_interval = get_positive_int(p, "ring buffer interval");
} else if (strcmp(arg,"nametimenum") == 0) {
int val = get_positive_int(p, "file name: time before num");
capture_opts->has_nametimenum = (val > 1);
} else if (strcmp(arg,"packets") == 0) {
capture_opts->has_file_packets = TRUE;
capture_opts->file_packets = get_positive_int(p, "ring buffer packet count");
} else if (strcmp(arg,"printname") == 0) {
capture_opts->print_file_names = TRUE;
capture_opts->print_name_to = g_strdup(p);
}
*colonp = ':'; /* put the colon back */
return TRUE;
}
#ifdef HAVE_PCAP_SETSAMPLING
/*
* Given a string of the form "<sampling type>:<value>", as might appear
* as an argument to a "-m" option, parse it and set the arguments in
* question. Return an indication of whether it succeeded or failed
* in some fashion.
*/
static gboolean
get_sampling_arguments(capture_options *capture_opts, const char *arg)
{
gchar *p = NULL, *colonp;
colonp = strchr(arg, ':');
if (colonp == NULL)
return FALSE;
p = colonp;
*p++ = '\0';
while (g_ascii_isspace(*p))
p++;
if (*p == '\0') {
*colonp = ':';
return FALSE;
}
if (strcmp(arg, "count") == 0) {
if (capture_opts->ifaces->len > 0) {
interface_options *interface_opts;
interface_opts = &g_array_index(capture_opts->ifaces, interface_options, capture_opts->ifaces->len - 1);
interface_opts->sampling_method = CAPTURE_SAMP_BY_COUNT;
interface_opts->sampling_param = get_positive_int(p, "sampling count");
} else {
capture_opts->default_options.sampling_method = CAPTURE_SAMP_BY_COUNT;
capture_opts->default_options.sampling_param = get_positive_int(p, "sampling count");
}
} else if (strcmp(arg, "timer") == 0) {
if (capture_opts->ifaces->len > 0) {
interface_options *interface_opts;
interface_opts = &g_array_index(capture_opts->ifaces, interface_options, capture_opts->ifaces->len - 1);
interface_opts->sampling_method = CAPTURE_SAMP_BY_TIMER;
interface_opts->sampling_param = get_positive_int(p, "sampling timer");
} else {
capture_opts->default_options.sampling_method = CAPTURE_SAMP_BY_TIMER;
capture_opts->default_options.sampling_param = get_positive_int(p, "sampling timer");
}
}
*colonp = ':';
return TRUE;
}
#endif
#ifdef HAVE_PCAP_REMOTE
/*
* Given a string of the form "<username>:<password>", as might appear
* as an argument to a "-A" option, parse it and set the arguments in
* question. Return an indication of whether it succeeded or failed
* in some fashion.
*/
static gboolean
get_auth_arguments(capture_options *capture_opts, const char *arg)
{
gchar *p = NULL, *colonp;
colonp = strchr(arg, ':');
if (colonp == NULL)
return FALSE;
p = colonp;
*p++ = '\0';
while (g_ascii_isspace(*p))
p++;
if (capture_opts->ifaces->len > 0) {
interface_options *interface_opts;
interface_opts = &g_array_index(capture_opts->ifaces, interface_options, capture_opts->ifaces->len - 1);
interface_opts->auth_type = CAPTURE_AUTH_PWD;
interface_opts->auth_username = g_strdup(arg);
interface_opts->auth_password = g_strdup(p);
} else {
capture_opts->default_options.auth_type = CAPTURE_AUTH_PWD;
capture_opts->default_options.auth_username = g_strdup(arg);
capture_opts->default_options.auth_password = g_strdup(p);
}
*colonp = ':';
return TRUE;
}
#endif
#ifdef _WIN32
static char *
capture_opts_generate_display_name(const char *friendly_name,
const char *name _U_)
{
/*
* Display the friendly name rather than the not-so-friendly
* GUID-based interface name.
*/
return g_strdup(friendly_name);
}
#else
static char *
capture_opts_generate_display_name(const char *friendly_name,
const char *name)
{
/*
* On UN*X, however, users are more used to interface names,
* and may find it helpful to see them.
*/
return ws_strdup_printf("%s: %s", friendly_name, name);
}
#endif
static void
fill_in_interface_opts_from_ifinfo(interface_options *interface_opts,
const if_info_t *if_info)
{
interface_opts->name = g_strdup(if_info->name);
interface_opts->hardware = g_strdup(if_info->vendor_description);
if (if_info->friendly_name != NULL) {
/*
* We have a friendly name; remember it as the
* description...
*/
interface_opts->descr = g_strdup(if_info->friendly_name);
/*
* ...and use it in the console display name.
*/
interface_opts->display_name = capture_opts_generate_display_name(if_info->friendly_name, if_info->name);
} else {
/* fallback to the interface name */
interface_opts->descr = NULL;
interface_opts->display_name = g_strdup(if_info->name);
}
interface_opts->ifname = NULL;
interface_opts->if_type = if_info->type;
interface_opts->extcap = g_strdup(if_info->extcap);
}
static gboolean
fill_in_interface_opts_from_ifinfo_by_name(interface_options *interface_opts,
const char *name)
{
gboolean matched;
GList *if_list;
int err;
GList *if_entry;
if_info_t *if_info;
size_t prefix_length;
matched = FALSE;
if_list = capture_interface_list(&err, NULL, NULL);
if (if_list != NULL) {
/*
* Try and do an exact match (case insensitive) on the
* interface name, the interface description, and the
* hardware description.
*/
for (if_entry = g_list_first(if_list); if_entry != NULL;
if_entry = g_list_next(if_entry))
{
if_info = (if_info_t *)if_entry->data;
/*
* Does the specified name match the interface name
* with a case-insensitive match?
*/
if (g_ascii_strcasecmp(if_info->name, name) == 0) {
/*
* Yes.
*/
matched = TRUE;
break;
}
/*
* Does this interface have a friendly name and, if so,
* does the specified name match the friendly name with
* a case-insensitive match?
*/
if (if_info->friendly_name != NULL &&
g_ascii_strcasecmp(if_info->friendly_name, name) == 0) {
/*
* Yes.
*/
matched = TRUE;
break;
}
}
if (!matched) {
/*
* We didn't find it; attempt a case-insensitive prefix match
* of the friendly name.
*/
prefix_length = strlen(name);
for (if_entry = g_list_first(if_list); if_entry != NULL;
if_entry = g_list_next(if_entry))
{
if_info = (if_info_t *)if_entry->data;
if (if_info->friendly_name != NULL &&
g_ascii_strncasecmp(if_info->friendly_name, name, prefix_length) == 0) {
/*
* We found an interface whose friendly name matches
* with a case-insensitive prefix match.
*/
matched = TRUE;
break;
}
}
}
}
if (matched) {
/*
* We found an interface that matches.
*/
fill_in_interface_opts_from_ifinfo(interface_opts, if_info);
}
free_interface_list(if_list);
return matched;
}
static int
capture_opts_add_iface_opt(capture_options *capture_opts, const char *optarg_str_p)
{
long adapter_index;
char *p;
GList *if_list;
if_info_t *if_info;
int err;
gchar *err_str;
interface_options interface_opts;
/*
* If the argument is a number, treat it as an index into the list
* of adapters, as printed by "tshark -D".
*
* This should be OK on UN*X systems, as interfaces shouldn't have
* names that begin with digits. It can be useful on Windows, where
* more than one interface can have the same name.
*
* XXX - "shouldn't have names that begin with digits" is not true
* on Linux; see
*
* https://github.com/the-tcpdump-group/tcpdump/issues/522
*
* tcpdump handles that by trying to open the device by name and,
* if that fails *and* the name is a syntactically valid number
* (optional sign, followed by decimal digits), reports an error
* if it's not a valid interface index, and otherwise uses it as
* an interface index.
*/
adapter_index = strtol(optarg_str_p, &p, 10);
if (p != NULL && *p == '\0') {
if (adapter_index < 0) {
cmdarg_err("The specified adapter index is a negative number");
return 1;
}
if (adapter_index > INT_MAX) {
cmdarg_err("The specified adapter index is too large (greater than %d)",
INT_MAX);
return 1;
}
if (adapter_index == 0) {
cmdarg_err("There is no interface with that adapter index");
return 1;
}
if_list = capture_interface_list(&err, &err_str, NULL);
if (if_list == NULL) {
if (err == 0)
cmdarg_err("There are no interfaces on which a capture can be done");
else {
cmdarg_err("%s", err_str);
g_free(err_str);
}
return 2;
}
if_info = (if_info_t *)g_list_nth_data(if_list, (int)(adapter_index - 1));
if (if_info == NULL) {
cmdarg_err("There is no interface with that adapter index");
return 1;
}
fill_in_interface_opts_from_ifinfo(&interface_opts, if_info);
free_interface_list(if_list);
} else if (capture_opts->capture_child) {
/*
* In Wireshark capture child mode, so the exact interface name
* is supplied, and we don't need to look it up.
*/
if_info = if_info_get(optarg_str_p);
fill_in_interface_opts_from_ifinfo(&interface_opts, if_info);
if_info_free(if_info);
} else {
/*
* Search for that name in the interface list and, if we found
* it, fill in fields in the interface_opts structure.
*/
if (!fill_in_interface_opts_from_ifinfo_by_name(&interface_opts,
optarg_str_p)) {
/*
* We didn't find the interface in the list; just use
* the specified name, so that, for example, if an
* interface doesn't show up in the list for some
* reason, the user can try specifying it explicitly
* for testing purposes.
*/
interface_opts.name = g_strdup(optarg_str_p);
interface_opts.descr = NULL;
interface_opts.hardware = NULL;
interface_opts.display_name = g_strdup(optarg_str_p);
interface_opts.ifname = NULL;
interface_opts.if_type = capture_opts->default_options.if_type;
interface_opts.extcap = g_strdup(capture_opts->default_options.extcap);
}
}
interface_opts.cfilter = g_strdup(capture_opts->default_options.cfilter);
interface_opts.snaplen = capture_opts->default_options.snaplen;
interface_opts.has_snaplen = capture_opts->default_options.has_snaplen;
interface_opts.linktype = capture_opts->default_options.linktype;
interface_opts.promisc_mode = capture_opts->default_options.promisc_mode;
interface_opts.extcap_fifo = g_strdup(capture_opts->default_options.extcap_fifo);
interface_opts.extcap_args = NULL;
interface_opts.extcap_pid = WS_INVALID_PID;
interface_opts.extcap_pipedata = NULL;
interface_opts.extcap_stderr = NULL;
interface_opts.extcap_stdout_watch = 0;
interface_opts.extcap_stderr_watch = 0;
#ifdef _WIN32
interface_opts.extcap_pipe_h = INVALID_HANDLE_VALUE;
interface_opts.extcap_control_in_h = INVALID_HANDLE_VALUE;
interface_opts.extcap_control_out_h = INVALID_HANDLE_VALUE;
#endif
interface_opts.extcap_control_in = g_strdup(capture_opts->default_options.extcap_control_in);
interface_opts.extcap_control_out = g_strdup(capture_opts->default_options.extcap_control_out);
#ifdef CAN_SET_CAPTURE_BUFFER_SIZE
interface_opts.buffer_size = capture_opts->default_options.buffer_size;
#endif
interface_opts.monitor_mode = capture_opts->default_options.monitor_mode;
#ifdef HAVE_PCAP_REMOTE
interface_opts.src_type = capture_opts->default_options.src_type;
interface_opts.remote_host = g_strdup(capture_opts->default_options.remote_host);
interface_opts.remote_port = g_strdup(capture_opts->default_options.remote_port);
interface_opts.auth_type = capture_opts->default_options.auth_type;
interface_opts.auth_username = g_strdup(capture_opts->default_options.auth_username);
interface_opts.auth_password = g_strdup(capture_opts->default_options.auth_password);
interface_opts.datatx_udp = capture_opts->default_options.datatx_udp;
interface_opts.nocap_rpcap = capture_opts->default_options.nocap_rpcap;
interface_opts.nocap_local = capture_opts->default_options.nocap_local;
#endif
#ifdef HAVE_PCAP_SETSAMPLING
interface_opts.sampling_method = capture_opts->default_options.sampling_method;
interface_opts.sampling_param = capture_opts->default_options.sampling_param;
#endif
interface_opts.timestamp_type = capture_opts->default_options.timestamp_type;
g_array_append_val(capture_opts->ifaces, interface_opts);
return 0;
}
int
capture_opts_add_opt(capture_options *capture_opts, int opt, const char *optarg_str_p)
{
int status, snaplen;
ws_statb64 fstat;
switch(opt) {
case 'a': /* autostop criteria */
if (set_autostop_criterion(capture_opts, optarg_str_p) == FALSE) {
cmdarg_err("Invalid or unknown -a flag \"%s\"", optarg_str_p);
return 1;
}
break;
#ifdef HAVE_PCAP_REMOTE
case 'A':
if (get_auth_arguments(capture_opts, optarg_str_p) == FALSE) {
cmdarg_err("Invalid or unknown -A arg \"%s\"", optarg_str_p);
return 1;
}
break;
#endif
case 'b': /* Ringbuffer option */
capture_opts->multi_files_on = TRUE;
if (get_ring_arguments(capture_opts, optarg_str_p) == FALSE) {
cmdarg_err("Invalid or unknown -b arg \"%s\"", optarg_str_p);
return 1;
}
break;
#ifdef CAN_SET_CAPTURE_BUFFER_SIZE
case 'B': /* Buffer size */
if (capture_opts->ifaces->len > 0) {
interface_options *interface_opts;
interface_opts = &g_array_index(capture_opts->ifaces, interface_options, capture_opts->ifaces->len - 1);
interface_opts->buffer_size = get_positive_int(optarg_str_p, "buffer size");
} else {
capture_opts->default_options.buffer_size = get_positive_int(optarg_str_p, "buffer size");
}
break;
#endif
case 'c': /* Capture n packets */
/* XXX Use set_autostop_criterion instead? */
capture_opts->has_autostop_packets = TRUE;
capture_opts->autostop_packets = get_positive_int(optarg_str_p, "packet count");
break;
case 'f': /* capture filter */
get_filter_arguments(capture_opts, optarg_str_p);
break;
case 'g': /* enable group read access on the capture file(s) */
capture_opts->group_read_access = TRUE;
break;
case 'H': /* Hide capture info dialog box */
capture_opts->show_info = FALSE;
break;
case LONGOPT_SET_TSTAMP_TYPE: /* Set capture time stamp type */
if (capture_opts->ifaces->len > 0) {
interface_options *interface_opts;
interface_opts = &g_array_index(capture_opts->ifaces, interface_options, capture_opts->ifaces->len - 1);
g_free(interface_opts->timestamp_type);
interface_opts->timestamp_type = g_strdup(optarg_str_p);
} else {
g_free(capture_opts->default_options.timestamp_type);
capture_opts->default_options.timestamp_type = g_strdup(optarg_str_p);
}
break;
case 'i': /* Use interface x */
status = capture_opts_add_iface_opt(capture_opts, optarg_str_p);
if (status != 0) {
return status;
}
break;
#ifdef HAVE_PCAP_CREATE
case 'I': /* Capture in monitor mode */
if (capture_opts->ifaces->len > 0) {
interface_options *interface_opts;
interface_opts = &g_array_index(capture_opts->ifaces, interface_options, capture_opts->ifaces->len - 1);
interface_opts->monitor_mode = TRUE;
} else {
capture_opts->default_options.monitor_mode = TRUE;
}
break;
#endif
/*case 'l':*/ /* Automatic scrolling in live capture mode */
#ifdef HAVE_PCAP_SETSAMPLING
case 'm':
if (get_sampling_arguments(capture_opts, optarg_str_p) == FALSE) {
cmdarg_err("Invalid or unknown -m arg \"%s\"", optarg_str_p);
return 1;
}
break;
#endif
case 'n': /* Use pcapng format */
capture_opts->use_pcapng = TRUE;
break;
case 'p': /* Don't capture in promiscuous mode */
if (capture_opts->ifaces->len > 0) {
interface_options *interface_opts;
interface_opts = &g_array_index(capture_opts->ifaces, interface_options, capture_opts->ifaces->len - 1);
interface_opts->promisc_mode = FALSE;
} else {
capture_opts->default_options.promisc_mode = FALSE;
}
break;
case 'P': /* Use pcap format */
capture_opts->use_pcapng = FALSE;
break;
#ifdef HAVE_PCAP_REMOTE
case 'r':
if (capture_opts->ifaces->len > 0) {
interface_options *interface_opts;
interface_opts = &g_array_index(capture_opts->ifaces, interface_options, capture_opts->ifaces->len - 1);
interface_opts->nocap_rpcap = FALSE;
} else {
capture_opts->default_options.nocap_rpcap = FALSE;
}
break;
#endif
case 's': /* Set the snapshot (capture) length */
snaplen = get_natural_int(optarg_str_p, "snapshot length");
/*
* Make a snapshot length of 0 equivalent to the maximum packet
* length, mirroring what tcpdump does.
*/
if (snaplen == 0)
snaplen = WTAP_MAX_PACKET_SIZE_STANDARD;
if (capture_opts->ifaces->len > 0) {
interface_options *interface_opts;
interface_opts = &g_array_index(capture_opts->ifaces, interface_options, capture_opts->ifaces->len - 1);
interface_opts->has_snaplen = TRUE;
interface_opts->snaplen = snaplen;
} else {
capture_opts->default_options.snaplen = snaplen;
capture_opts->default_options.has_snaplen = TRUE;
}
break;
case 'S': /* "Real-Time" mode: used for following file ala tail -f */
capture_opts->real_time_mode = TRUE;
break;
#ifdef HAVE_PCAP_REMOTE
case 'u':
if (capture_opts->ifaces->len > 0) {
interface_options *interface_opts;
interface_opts = &g_array_index(capture_opts->ifaces, interface_options, capture_opts->ifaces->len - 1);
interface_opts->datatx_udp = TRUE;
} else {
capture_opts->default_options.datatx_udp = TRUE;
}
break;
#endif
case 'w': /* Write to capture file x */
capture_opts->saving_to_file = TRUE;
g_free(capture_opts->save_file);
capture_opts->save_file = g_strdup(optarg_str_p);
capture_opts->orig_save_file = g_strdup(optarg_str_p);
status = capture_opts_output_to_pipe(capture_opts->save_file, &capture_opts->output_to_pipe);
return status;
case 'y': /* Set the pcap data link type */
if (capture_opts->ifaces->len > 0) {
interface_options *interface_opts;
interface_opts = &g_array_index(capture_opts->ifaces, interface_options, capture_opts->ifaces->len - 1);
interface_opts->linktype = linktype_name_to_val(optarg_str_p);
if (interface_opts->linktype == -1) {
cmdarg_err("The specified data link type \"%s\" isn't valid",
optarg_str_p);
return 1;
}
} else {
capture_opts->default_options.linktype = linktype_name_to_val(optarg_str_p);
if (capture_opts->default_options.linktype == -1) {
cmdarg_err("The specified data link type \"%s\" isn't valid",
optarg_str_p);
return 1;
}
}
break;
case LONGOPT_COMPRESS_TYPE: /* compress type */
if (capture_opts->compress_type) {
cmdarg_err("--compress-type can be set only once");
return 1;
}
if (strcmp(optarg_str_p, "none") == 0) {
;
} else if (strcmp(optarg_str_p, "gzip") == 0) {
#ifdef HAVE_ZLIB
;
#else
cmdarg_err("'gzip' compression is not supported");
return 1;
#endif
} else {
#ifdef HAVE_ZLIB
cmdarg_err("parameter of --compress-type can be 'none' or 'gzip'");
#else
cmdarg_err("parameter of --compress-type can only be 'none'");
#endif
return 1;
}
capture_opts->compress_type = g_strdup(optarg_str_p);
break;
case LONGOPT_CAPTURE_TMPDIR: /* capture temporary directory */
if (capture_opts->temp_dir) {
cmdarg_err("--temp-dir can be set only once");
return 1;
}
if (ws_stat64(optarg_str_p, &fstat) < 0) {
cmdarg_err("Can't set temporary directory %s: %s",
optarg_str_p, g_strerror(errno));
return 1;
}
if (!S_ISDIR(fstat.st_mode)) {
cmdarg_err("Can't set temporary directory %s: not a directory",
optarg_str_p);
return 1;
}
#ifdef S_IRWXU
if ((fstat.st_mode & S_IRWXU) != S_IRWXU) {
cmdarg_err("Can't set temporary directory %s: not a writable directory",
optarg_str_p);
return 1;
}
#endif /* S_IRWXU */
capture_opts->temp_dir = g_strdup(optarg_str_p);
break;
default:
/* the caller is responsible to send us only the right opt's */
ws_assert_not_reached();
}
return 0;
}
int
capture_opts_print_if_capabilities(if_capabilities_t *caps,
interface_options *interface_opts,
int queries)
{
GList *lt_entry, *ts_entry;
if (queries & CAPS_QUERY_LINK_TYPES) {
if (caps->data_link_types == NULL) {
cmdarg_err("The capture device \"%s\" has no data link types.",
interface_opts->name);
return WS_EXIT_IFACE_HAS_NO_LINK_TYPES;
}
if (caps->can_set_rfmon)
printf("Data link types of interface %s when %sin monitor mode (use option -y to set):\n",
interface_opts->name,
(interface_opts->monitor_mode) ? "" : "not ");
else
printf("Data link types of interface %s (use option -y to set):\n",
interface_opts->name);
for (lt_entry = caps->data_link_types; lt_entry != NULL;
lt_entry = g_list_next(lt_entry)) {
data_link_info_t *data_link_info = (data_link_info_t *)lt_entry->data;
printf(" %s", data_link_info->name);
if (data_link_info->description != NULL)
printf(" (%s)", data_link_info->description);
else
printf(" (not supported)");
printf("\n");
}
}
if (queries & CAPS_QUERY_TIMESTAMP_TYPES) {
if (caps->timestamp_types == NULL) {
cmdarg_err("The capture device \"%s\" has no timestamp types.",
interface_opts->name);
return WS_EXIT_IFACE_HAS_NO_TIMESTAMP_TYPES;
}
printf("Timestamp types of the interface (use option --time-stamp-type to set):\n");
for (ts_entry = caps->timestamp_types; ts_entry != NULL;
ts_entry = g_list_next(ts_entry)) {
timestamp_info_t *timestamp = (timestamp_info_t *)ts_entry->data;
printf(" %s", timestamp->name);
if (timestamp->description != NULL)
printf(" (%s)", timestamp->description);
else
printf(" (none)");
printf("\n");
}
}
return EXIT_SUCCESS;
}
/* Print an ASCII-formatted list of interfaces. */
void
capture_opts_print_interfaces(GList *if_list)
{
int i;
GList *if_entry;
if_info_t *if_info;
i = 1; /* Interface id number */
for (if_entry = g_list_first(if_list); if_entry != NULL;
if_entry = g_list_next(if_entry)) {
if_info = (if_info_t *)if_entry->data;
printf("%d. %s", i++, if_info->name);
/* Print the interface friendly name, if it exists;
if not, fall back to the vendor description, if it exists. */
if (if_info->friendly_name != NULL){
printf(" (%s)", if_info->friendly_name);
} else {
if (if_info->vendor_description != NULL)
printf(" (%s)", if_info->vendor_description);
}
printf("\n");
}
}
void
capture_opts_trim_snaplen(capture_options *capture_opts, int snaplen_min)
{
guint i;
interface_options *interface_opts;
if (capture_opts->ifaces->len > 0) {
for (i = 0; i < capture_opts->ifaces->len; i++) {
interface_opts = &g_array_index(capture_opts->ifaces, interface_options, 0);
if (interface_opts->snaplen < 1)
interface_opts->snaplen = WTAP_MAX_PACKET_SIZE_STANDARD;
else if (interface_opts->snaplen < snaplen_min)
interface_opts->snaplen = snaplen_min;
}
} else {
if (capture_opts->default_options.snaplen < 1)
capture_opts->default_options.snaplen = WTAP_MAX_PACKET_SIZE_STANDARD;
else if (capture_opts->default_options.snaplen < snaplen_min)
capture_opts->default_options.snaplen = snaplen_min;
}
}
void
capture_opts_trim_ring_num_files(capture_options *capture_opts)
{
/* Check the value range of the ring_num_files parameter */
if (capture_opts->ring_num_files > RINGBUFFER_MAX_NUM_FILES) {
cmdarg_err("Too many ring buffer files (%u). Reducing to %u.\n", capture_opts->ring_num_files, RINGBUFFER_MAX_NUM_FILES);
capture_opts->ring_num_files = RINGBUFFER_MAX_NUM_FILES;
} else if (capture_opts->ring_num_files > RINGBUFFER_WARN_NUM_FILES) {
cmdarg_err("%u is a lot of ring buffer files.\n", capture_opts->ring_num_files);
}
#if RINGBUFFER_MIN_NUM_FILES > 0
else if (capture_opts->ring_num_files < RINGBUFFER_MIN_NUM_FILES)
cmdarg_err("Too few ring buffer files (%u). Increasing to %u.\n", capture_opts->ring_num_files, RINGBUFFER_MIN_NUM_FILES);
capture_opts->ring_num_files = RINGBUFFER_MIN_NUM_FILES;
#endif
}
/*
* If no interface was specified explicitly, pick a default.
*/
int
capture_opts_default_iface_if_necessary(capture_options *capture_opts,
const char *capture_device)
{
int status;
/* Did the user specify an interface to use? */
if (capture_opts->num_selected != 0 || capture_opts->ifaces->len != 0) {
/* yes they did, return immediately - nothing further to do here */
return 0;
}
/* No - is a default specified in the preferences file? */
if (capture_device != NULL) {
/* Yes - use it. */
status = capture_opts_add_iface_opt(capture_opts, capture_device);
return status;
}
/* No default in preferences file, just pick the first interface from the list of interfaces. */
return capture_opts_add_iface_opt(capture_opts, "1");
}
#ifndef S_IFIFO
#define S_IFIFO _S_IFIFO
#endif
#ifndef S_ISFIFO
#define S_ISFIFO(mode) (((mode) & S_IFMT) == S_IFIFO)
#endif
/* copied from filesystem.c */
static int
capture_opts_test_for_fifo(const char *path)
{
ws_statb64 statb;
if (ws_stat64(path, &statb) < 0)
return errno;
if (S_ISFIFO(statb.st_mode))
return ESPIPE;
else
return 0;
}
static gboolean
capture_opts_output_to_pipe(const char *save_file, gboolean *is_pipe)
{
int err;
*is_pipe = FALSE;
if (save_file != NULL) {
/* We're writing to a capture file. */
if (strcmp(save_file, "-") == 0) {
/* Writing to stdout. */
/* XXX - should we check whether it's a pipe? It's arguably
silly to do "-w - >output_file" rather than "-w output_file",
but by not checking we might be violating the Principle Of
Least Astonishment. */
*is_pipe = TRUE;
} else {
/* not writing to stdout, test for a FIFO (aka named pipe) */
err = capture_opts_test_for_fifo(save_file);
switch (err) {
case ENOENT: /* it doesn't exist, so we'll be creating it,
and it won't be a FIFO */
case 0: /* found it, but it's not a FIFO */
break;
case ESPIPE: /* it is a FIFO */
*is_pipe = TRUE;
break;
default: /* couldn't stat it */
break; /* ignore: later attempt to open */
/* will generate a nice msg */
}
}
}
return 0;
}
void
capture_opts_del_iface(capture_options *capture_opts, guint if_index)
{
interface_options *interface_opts;
interface_opts = &g_array_index(capture_opts->ifaces, interface_options, if_index);
/* XXX - check if found? */
g_free(interface_opts->name);
g_free(interface_opts->descr);
g_free(interface_opts->hardware);
g_free(interface_opts->display_name);
g_free(interface_opts->ifname);
g_free(interface_opts->cfilter);
g_free(interface_opts->timestamp_type);
g_free(interface_opts->extcap);
g_free(interface_opts->extcap_fifo);
if (interface_opts->extcap_args)
g_hash_table_unref(interface_opts->extcap_args);
if (interface_opts->extcap_pid != WS_INVALID_PID)
ws_warning("Extcap still running during interface delete");
g_free(interface_opts->extcap_pipedata);
if (interface_opts->extcap_stderr)
g_string_free(interface_opts->extcap_stderr, TRUE);
g_free(interface_opts->extcap_control_in);
g_free(interface_opts->extcap_control_out);
#ifdef HAVE_PCAP_REMOTE
if (interface_opts->src_type == CAPTURE_IFREMOTE) {
g_free(interface_opts->remote_host);
g_free(interface_opts->remote_port);
g_free(interface_opts->auth_username);
g_free(interface_opts->auth_password);
}
#endif
capture_opts->ifaces = g_array_remove_index(capture_opts->ifaces, if_index);
}
/*
* Add all non-hidden selected interfaces in the "all interfaces" list
* to the list of interfaces for the capture.
*/
void
collect_ifaces(capture_options *capture_opts)
{
guint i;
interface_t *device;
interface_options interface_opts;
/* Empty out the existing list of interfaces. */
for (i = capture_opts->ifaces->len; i != 0; i--)
capture_opts_del_iface(capture_opts, i-1);
/* Now fill the list up again. */
for (i = 0; i < capture_opts->all_ifaces->len; i++) {
device = &g_array_index(capture_opts->all_ifaces, interface_t, i);
if (device->selected) {
interface_opts.name = g_strdup(device->name);
interface_opts.descr = g_strdup(device->friendly_name);
interface_opts.ifname = NULL;
interface_opts.hardware = g_strdup(device->vendor_description);
interface_opts.display_name = g_strdup(device->display_name);
interface_opts.linktype = device->active_dlt;
interface_opts.cfilter = g_strdup(device->cfilter);
interface_opts.timestamp_type = g_strdup(device->timestamp_type);
interface_opts.snaplen = device->snaplen;
interface_opts.has_snaplen = device->has_snaplen;
interface_opts.promisc_mode = device->pmode;
interface_opts.if_type = device->if_info.type;
interface_opts.extcap = g_strdup(device->if_info.extcap);
interface_opts.extcap_fifo = NULL;
interface_opts.extcap_pipedata = NULL;
interface_opts.extcap_args = device->external_cap_args_settings;
interface_opts.extcap_pid = WS_INVALID_PID;
if (interface_opts.extcap_args)
g_hash_table_ref(interface_opts.extcap_args);
interface_opts.extcap_pipedata = NULL;
interface_opts.extcap_stderr = NULL;
#ifdef _WIN32
interface_opts.extcap_pipe_h = INVALID_HANDLE_VALUE;
interface_opts.extcap_control_in_h = INVALID_HANDLE_VALUE;
interface_opts.extcap_control_out_h = INVALID_HANDLE_VALUE;
#endif
interface_opts.extcap_control_in = NULL;
interface_opts.extcap_control_out = NULL;
#ifdef CAN_SET_CAPTURE_BUFFER_SIZE
interface_opts.buffer_size = device->buffer;
#endif
#ifdef HAVE_PCAP_CREATE
interface_opts.monitor_mode = device->monitor_mode_enabled;
#endif
#ifdef HAVE_PCAP_REMOTE
interface_opts.src_type = CAPTURE_IFREMOTE;
interface_opts.remote_host = g_strdup(device->remote_opts.remote_host_opts.remote_host);
interface_opts.remote_port = g_strdup(device->remote_opts.remote_host_opts.remote_port);
interface_opts.auth_type = device->remote_opts.remote_host_opts.auth_type;
interface_opts.auth_username = g_strdup(device->remote_opts.remote_host_opts.auth_username);
interface_opts.auth_password = g_strdup(device->remote_opts.remote_host_opts.auth_password);
interface_opts.datatx_udp = device->remote_opts.remote_host_opts.datatx_udp;
interface_opts.nocap_rpcap = device->remote_opts.remote_host_opts.nocap_rpcap;
interface_opts.nocap_local = device->remote_opts.remote_host_opts.nocap_local;
#endif
#ifdef HAVE_PCAP_SETSAMPLING
interface_opts.sampling_method = device->remote_opts.sampling_method;
interface_opts.sampling_param = device->remote_opts.sampling_param;
#endif
g_array_append_val(capture_opts->ifaces, interface_opts);
} else {
continue;
}
}
}
static void
capture_opts_free_interface_t_links(gpointer elem, gpointer unused _U_)
{
link_row* e = (link_row*)elem;
if (e != NULL)
g_free(e->name);
g_free(elem);
}
void
capture_opts_free_interface_t(interface_t *device)
{
if (device != NULL) {
g_free(device->name);
g_free(device->display_name);
g_free(device->vendor_description);
g_free(device->friendly_name);
g_free(device->addresses);
g_free(device->cfilter);
g_free(device->timestamp_type);
g_list_foreach(device->links,
capture_opts_free_interface_t_links, NULL);
g_list_free(device->links);
#ifdef HAVE_PCAP_REMOTE
g_free(device->remote_opts.remote_host_opts.remote_host);
g_free(device->remote_opts.remote_host_opts.remote_port);
g_free(device->remote_opts.remote_host_opts.auth_username);
g_free(device->remote_opts.remote_host_opts.auth_password);
#endif
g_free(device->if_info.name);
g_free(device->if_info.friendly_name);
g_free(device->if_info.vendor_description);
g_slist_free_full(device->if_info.addrs, g_free);
g_free(device->if_info.extcap);
}
}
#endif /* HAVE_LIBPCAP */
/*
* 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:
*/
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