2 * Helper routines common to all SRT taps.
4 * Wireshark - Network traffic analyzer
5 * By Gerald Combs <gerald@wireshark.org>
6 * Copyright 1998 Gerald Combs
8 * SPDX-License-Identifier: GPL-2.0-or-later
16 #include "packet_info.h"
17 #include "srt_table.h"
20 int proto_id; /* protocol id (0-indexed) */
21 const char* tap_listen_str; /* string used in register_tap_listener (NULL to use protocol name) */
22 int max_tables; /* Maximum number of tables expected (used by GUI to determine how to display tables) */
23 tap_packet_cb srt_func; /* function to be called for new incoming packets for SRT */
24 srt_init_cb srt_init; /* function to create dissector SRT tables */
25 srt_param_handler_cb param_cb; /* function to parse parameters of optional arguments of tap string */
26 void* param_data; /* Storage for tap parameter data */
29 int get_srt_proto_id(register_srt_t* srt)
37 const char* get_srt_tap_listener_name(register_srt_t* srt)
39 return srt->tap_listen_str;
42 int get_srt_max_tables(register_srt_t* srt)
44 return srt->max_tables;
47 tap_packet_cb get_srt_packet_func(register_srt_t* srt)
52 void set_srt_table_param_data(register_srt_t* srt, void* data)
54 srt->param_data = data;
57 void* get_srt_table_param_data(register_srt_t* srt)
59 return srt->param_data;
63 free_srt_table_data(srt_stat_table *rst)
67 for(i=0;i<rst->num_procs;i++){
68 g_free(rst->procedures[i].procedure);
69 rst->procedures[i].procedure=NULL;
71 g_free(rst->filter_string);
72 rst->filter_string=NULL;
73 g_free(rst->procedures);
78 void free_srt_table(register_srt_t *srt, GArray* srt_array, srt_gui_free_cb gui_callback, void *callback_data)
81 srt_stat_table *srt_table;
83 for (i = 0; i < srt_array->len; i++)
85 srt_table = g_array_index(srt_array, srt_stat_table*, i);
87 /* Give GUI the first crack at it before we clean up */
89 gui_callback(srt_table, callback_data);
91 free_srt_table_data(srt_table);
95 /* Clear the tables */
96 g_array_set_size(srt_array, 0);
98 /* Clear out any possible parameter data */
99 g_free(srt->param_data);
100 srt->param_data = NULL;
103 static void reset_srt_table_data(srt_stat_table *rst)
107 for(i=0;i<rst->num_procs;i++){
108 time_stat_init(&rst->procedures[i].stats);
112 void reset_srt_table(GArray* srt_array, srt_gui_reset_cb gui_callback, void *callback_data)
115 srt_stat_table *srt_table;
117 for (i = 0; i < srt_array->len; i++)
119 srt_table = g_array_index(srt_array, srt_stat_table*, i);
121 /* Give GUI the first crack at it before we clean up */
123 gui_callback(srt_table, callback_data);
125 reset_srt_table_data(srt_table);
129 static wmem_tree_t *registered_srt_tables = NULL;
131 register_srt_t* get_srt_table_by_name(const char* name)
133 return (register_srt_t*)wmem_tree_lookup_string(registered_srt_tables, name, 0);
136 gchar* srt_table_get_tap_string(register_srt_t* srt)
138 GString *cmd_str = g_string_new(proto_get_protocol_filter_name(srt->proto_id));
139 g_string_append(cmd_str, ",srt");
140 return g_string_free(cmd_str, FALSE);
143 void srt_table_get_filter(register_srt_t* srt, const char *opt_arg, const char **filter, char** err)
145 gchar* cmd_str = srt_table_get_tap_string(srt);
146 guint len = (guint32)strlen(cmd_str);
151 if(!strncmp(opt_arg, cmd_str, len))
153 if (srt->param_cb != NULL)
155 pos = srt->param_cb(srt, opt_arg + len, err);
163 if (opt_arg[pos] == ',')
165 *filter = opt_arg + pos+1;
172 void srt_table_dissector_init(register_srt_t* srt, GArray* srt_array, srt_gui_init_cb gui_callback, void *callback_data)
174 srt->srt_init(srt, srt_array, gui_callback, callback_data);
178 register_srt_table(const int proto_id, const char* tap_listener, int max_tables, tap_packet_cb srt_packet_func, srt_init_cb init_cb, srt_param_handler_cb param_cb)
180 register_srt_t *table;
181 DISSECTOR_ASSERT(init_cb);
182 DISSECTOR_ASSERT(srt_packet_func);
184 table = wmem_new(wmem_epan_scope(), register_srt_t);
186 table->proto_id = proto_id;
187 if (tap_listener != NULL)
188 table->tap_listen_str = tap_listener;
190 table->tap_listen_str = proto_get_protocol_filter_name(proto_id);
191 table->max_tables = max_tables;
192 table->srt_func = srt_packet_func;
193 table->srt_init = init_cb;
194 table->param_cb = param_cb;
195 table->param_data = NULL;
197 if (registered_srt_tables == NULL)
198 registered_srt_tables = wmem_tree_new(wmem_epan_scope());
200 wmem_tree_insert_string(registered_srt_tables, proto_get_protocol_filter_name(proto_id), table, 0);
203 void srt_table_iterate_tables(wmem_foreach_func func, gpointer user_data)
205 wmem_tree_foreach(registered_srt_tables, func, user_data);
209 init_srt_table(const char *name, const char *short_name, GArray *srt_array, int num_procs, const char* proc_column_name,
210 const char *filter_string, srt_gui_init_cb gui_callback, void* gui_data, void* table_specific_data)
213 srt_stat_table *table = g_new(srt_stat_table, 1);
215 table->filter_string = g_strdup(filter_string);
218 table->short_name = short_name;
219 table->proc_column_name = proc_column_name;
220 table->num_procs=num_procs;
221 table->procedures=(srt_procedure_t *)g_malloc(sizeof(srt_procedure_t)*num_procs);
222 for(i=0;i<num_procs;i++){
223 time_stat_init(&table->procedures[i].stats);
224 table->procedures[i].proc_index = 0;
225 table->procedures[i].procedure = NULL;
228 g_array_insert_val(srt_array, srt_array->len, table);
230 table->table_specific_data = table_specific_data;
233 gui_callback(table, gui_data);
239 init_srt_table_row(srt_stat_table *rst, int indx, const char *procedure)
241 /* we have discovered a new procedure. Extend the table accordingly */
242 if(indx>=rst->num_procs){
243 int old_num_procs=rst->num_procs;
246 rst->num_procs=indx+1;
247 rst->procedures=(srt_procedure_t *)g_realloc(rst->procedures, sizeof(srt_procedure_t)*(rst->num_procs));
248 for(i=old_num_procs;i<rst->num_procs;i++){
249 time_stat_init(&rst->procedures[i].stats);
250 rst->procedures[i].proc_index = i;
251 rst->procedures[i].procedure=NULL;
254 rst->procedures[indx].proc_index = indx;
255 rst->procedures[indx].procedure=g_strdup(procedure);
259 add_srt_table_data(srt_stat_table *rst, int indx, const nstime_t *req_time, packet_info *pinfo)
264 g_assert(indx >= 0 && indx < rst->num_procs);
265 rp=&rst->procedures[indx];
267 /* calculate time delta between request and reply */
269 nstime_delta(&delta, &t, req_time);
271 time_stat_update(&rp->stats, &delta, pinfo);
280 * indent-tabs-mode: nil
283 * ex: set shiftwidth=4 tabstop=8 expandtab:
284 * :indentSize=4:tabSize=8:noTabs=true: