2015-06-20 16:22:22 +00:00
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/* rtd_table.c
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* Helper routines common to all RTD taps.
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* Based on srt_table.c
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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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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "config.h"
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#include <string.h>
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#include "packet_info.h"
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#include "proto.h"
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#include "rtd_table.h"
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struct register_rtd {
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int proto_id; /* protocol id (0-indexed) */
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const char* tap_listen_str; /* string used in register_tap_listener (NULL to use protocol name) */
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tap_packet_cb rtd_func; /* function to be called for new incoming packets for RTD */
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guint num_tables;
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guint num_timestats;
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const value_string* vs_type;
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rtd_filter_check_cb filter_check;
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};
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int get_rtd_proto_id(register_rtd_t* rtd)
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{
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if (!rtd) {
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return -1;
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}
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return rtd->proto_id;
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}
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const char* get_rtd_tap_listener_name(register_rtd_t* rtd)
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{
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return rtd->tap_listen_str;
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}
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tap_packet_cb get_rtd_packet_func(register_rtd_t* rtd)
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{
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return rtd->rtd_func;
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}
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2015-07-07 19:04:48 +00:00
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guint get_rtd_num_tables(register_rtd_t* rtd) {
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return rtd->num_tables;
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}
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2015-06-20 16:22:22 +00:00
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const value_string* get_rtd_value_string(register_rtd_t* rtd)
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{
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return rtd->vs_type;
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}
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static GSList *registered_rtd_tables = NULL;
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static gint
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insert_sorted_by_table_name(gconstpointer aparam, gconstpointer bparam)
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{
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const register_rtd_t *a = (register_rtd_t *)aparam;
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const register_rtd_t *b = (register_rtd_t *)bparam;
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return g_ascii_strcasecmp(proto_get_protocol_short_name(find_protocol_by_id(a->proto_id)), proto_get_protocol_short_name(find_protocol_by_id(b->proto_id)));
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}
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void
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register_rtd_table(const int proto_id, const char* tap_listener, guint num_tables, guint num_timestats, const value_string* vs_type,
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tap_packet_cb rtd_packet_func, rtd_filter_check_cb filter_check_cb)
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{
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register_rtd_t *table;
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DISSECTOR_ASSERT(rtd_packet_func);
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table = g_new(register_rtd_t,1);
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table->proto_id = proto_id;
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if (tap_listener != NULL)
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table->tap_listen_str = tap_listener;
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else
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table->tap_listen_str = proto_get_protocol_filter_name(proto_id);
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table->rtd_func = rtd_packet_func;
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table->num_tables = num_tables;
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table->num_timestats = num_timestats;
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table->vs_type = vs_type;
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table->filter_check = filter_check_cb;
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registered_rtd_tables = g_slist_insert_sorted(registered_rtd_tables, table, insert_sorted_by_table_name);
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}
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2015-07-07 19:04:48 +00:00
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void free_rtd_table(rtd_stat_table* table, rtd_gui_free_cb gui_callback, void *callback_data)
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2015-06-20 16:22:22 +00:00
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{
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guint i;
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for (i = 0; i < table->num_rtds; i++)
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{
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g_free(table->time_stats[i].rtd);
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}
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g_free(table->time_stats);
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2015-08-20 15:56:04 +00:00
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table->time_stats = NULL;
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table->num_rtds = 0;
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2015-06-20 16:22:22 +00:00
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/* Give GUI the first crack at it before we clean up */
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if (gui_callback)
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gui_callback(table, callback_data);
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}
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void reset_rtd_table(rtd_stat_table* table, rtd_gui_reset_cb gui_callback, void *callback_data)
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{
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guint i = 0;
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for (i = 0; i < table->num_rtds; i++)
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memset(table->time_stats[i].rtd, 0, sizeof(timestat_t)*table->time_stats[i].num_timestat);
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/* Give GUI the first crack at it before we clean up */
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if (gui_callback)
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gui_callback(table, callback_data);
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}
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register_rtd_t* get_rtd_table_by_name(const char* name)
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{
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guint i, size = g_slist_length(registered_rtd_tables);
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register_rtd_t* rtd;
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GSList *slist;
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for (i = 0; i < size; i++) {
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slist = g_slist_nth(registered_rtd_tables, i);
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rtd = (register_rtd_t*)slist->data;
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if (strcmp(name, proto_get_protocol_filter_name(rtd->proto_id)) == 0)
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return rtd;
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}
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return NULL;
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}
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gchar* rtd_table_get_tap_string(register_rtd_t* rtd)
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{
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GString *cmd_str = g_string_new(proto_get_protocol_filter_name(rtd->proto_id));
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g_string_append(cmd_str, ",rtd");
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return g_string_free(cmd_str, FALSE);
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}
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void rtd_table_get_filter(register_rtd_t* rtd, const char *opt_arg, const char **filter, char** err)
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{
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gchar* cmd_str = rtd_table_get_tap_string(rtd);
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2015-06-22 15:53:34 +00:00
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guint len = (guint) strlen(cmd_str);
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2015-06-20 16:22:22 +00:00
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*filter=NULL;
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*err=NULL;
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if (!strncmp(opt_arg, cmd_str, len))
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{
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if (opt_arg[len] == ',')
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{
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*filter = opt_arg + len+1;
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}
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}
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if (rtd->filter_check)
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rtd->filter_check(opt_arg, filter, err);
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g_free(cmd_str);
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}
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void rtd_table_dissector_init(register_rtd_t* rtd, rtd_stat_table* table, rtd_gui_init_cb gui_callback, void *callback_data)
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{
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guint i;
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table->num_rtds = rtd->num_tables;
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table->time_stats = g_new0(rtd_timestat, rtd->num_tables);
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for (i = 0; i < table->num_rtds; i++)
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{
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table->time_stats[i].num_timestat = rtd->num_timestats;
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table->time_stats[i].rtd = g_new0(timestat_t, rtd->num_timestats);
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}
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if (gui_callback)
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gui_callback(table, callback_data);
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}
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void rtd_table_iterate_tables(GFunc func, gpointer user_data)
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{
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g_slist_foreach(registered_rtd_tables, func, user_data);
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}
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/*
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* Editor modelines
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*
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* Local Variables:
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* c-basic-offset: 4
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* tab-width: 8
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* indent-tabs-mode: nil
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* End:
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*
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* ex: set shiftwidth=4 tabstop=8 expandtab:
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* :indentSize=4:tabSize=8:noTabs=true:
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*/
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