diff options
Diffstat (limited to 'epan/rtd_table.c')
| -rw-r--r-- | epan/rtd_table.c | 172 |
1 files changed, 172 insertions, 0 deletions
diff --git a/epan/rtd_table.c b/epan/rtd_table.c new file mode 100644 index 00000000..738e66ed --- /dev/null +++ b/epan/rtd_table.c @@ -0,0 +1,172 @@ +/* rtd_table.c + * Helper routines common to all RTD taps. + * Based on srt_table.c + * + * 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 <string.h> + +#include "proto.h" +#include "packet_info.h" +#include "rtd_table.h" + +struct register_rtd { + int proto_id; /* protocol id (0-indexed) */ + const char* tap_listen_str; /* string used in register_tap_listener (NULL to use protocol name) */ + tap_packet_cb rtd_func; /* function to be called for new incoming packets for RTD */ + guint num_tables; + guint num_timestats; + const value_string* vs_type; + rtd_filter_check_cb filter_check; +}; + +int get_rtd_proto_id(register_rtd_t* rtd) +{ + if (!rtd) { + return -1; + } + return rtd->proto_id; +} + +const char* get_rtd_tap_listener_name(register_rtd_t* rtd) +{ + return rtd->tap_listen_str; +} + +tap_packet_cb get_rtd_packet_func(register_rtd_t* rtd) +{ + return rtd->rtd_func; +} + +guint get_rtd_num_tables(register_rtd_t* rtd) { + return rtd->num_tables; +} + +const value_string* get_rtd_value_string(register_rtd_t* rtd) +{ + return rtd->vs_type; +} + +static wmem_tree_t *registered_rtd_tables = NULL; + +void +register_rtd_table(const int proto_id, const char* tap_listener, guint num_tables, guint num_timestats, const value_string* vs_type, + tap_packet_cb rtd_packet_func, rtd_filter_check_cb filter_check_cb) +{ + register_rtd_t *table; + DISSECTOR_ASSERT(rtd_packet_func); + + table = wmem_new(wmem_epan_scope(), register_rtd_t); + + table->proto_id = proto_id; + if (tap_listener != NULL) + table->tap_listen_str = tap_listener; + else + table->tap_listen_str = proto_get_protocol_filter_name(proto_id); + table->rtd_func = rtd_packet_func; + table->num_tables = num_tables; + table->num_timestats = num_timestats; + table->vs_type = vs_type; + table->filter_check = filter_check_cb; + + if (registered_rtd_tables == NULL) + registered_rtd_tables = wmem_tree_new(wmem_epan_scope()); + + wmem_tree_insert_string(registered_rtd_tables, proto_get_protocol_filter_name(proto_id), table, 0); +} + +void free_rtd_table(rtd_stat_table* table) +{ + guint i; + + for (i = 0; i < table->num_rtds; i++) + { + g_free(table->time_stats[i].rtd); + } + g_free(table->time_stats); + table->time_stats = NULL; + table->num_rtds = 0; +} + +void reset_rtd_table(rtd_stat_table* table) +{ + guint i = 0; + + for (i = 0; i < table->num_rtds; i++) + memset(table->time_stats[i].rtd, 0, sizeof(timestat_t)*table->time_stats[i].num_timestat); +} + +register_rtd_t* get_rtd_table_by_name(const char* name) +{ + return (register_rtd_t*)wmem_tree_lookup_string(registered_rtd_tables, name, 0); +} + +gchar* rtd_table_get_tap_string(register_rtd_t* rtd) +{ + GString *cmd_str = g_string_new(proto_get_protocol_filter_name(rtd->proto_id)); + g_string_append(cmd_str, ",rtd"); + return g_string_free(cmd_str, FALSE); +} + +void rtd_table_get_filter(register_rtd_t* rtd, const char *opt_arg, const char **filter, char** err) +{ + gchar* cmd_str = rtd_table_get_tap_string(rtd); + guint len = (guint) strlen(cmd_str); + *filter=NULL; + *err=NULL; + + if (!strncmp(opt_arg, cmd_str, len)) + { + if (opt_arg[len] == ',') + { + *filter = opt_arg + len+1; + } + } + + if (rtd->filter_check) + rtd->filter_check(opt_arg, filter, err); + + g_free(cmd_str); +} + +void rtd_table_dissector_init(register_rtd_t* rtd, rtd_stat_table* table, rtd_gui_init_cb gui_callback, void *callback_data) +{ + guint i; + + table->num_rtds = rtd->num_tables; + table->time_stats = g_new0(rtd_timestat, rtd->num_tables); + + for (i = 0; i < table->num_rtds; i++) + { + table->time_stats[i].num_timestat = rtd->num_timestats; + table->time_stats[i].rtd = g_new0(timestat_t, rtd->num_timestats); + } + + if (gui_callback) + gui_callback(table, callback_data); +} + +void rtd_table_iterate_tables(wmem_foreach_func func, gpointer user_data) +{ + wmem_tree_foreach(registered_rtd_tables, func, user_data); +} + +/* + * Editor modelines + * + * Local Variables: + * c-basic-offset: 4 + * tab-width: 8 + * indent-tabs-mode: nil + * End: + * + * ex: set shiftwidth=4 tabstop=8 expandtab: + * :indentSize=4:tabSize=8:noTabs=true: + */ |