116 lines
3.6 KiB
C
116 lines
3.6 KiB
C
/* file_packet_provider_data.c
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* Routines for a packet_provider_data for packets from a file.
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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 <glib.h>
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#include "cfile.h"
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const nstime_t *
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cap_file_provider_get_frame_ts(struct packet_provider_data *prov, guint32 frame_num)
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{
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const frame_data *fd = NULL;
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if (prov->ref && prov->ref->num == frame_num) {
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fd = prov->ref;
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} else if (prov->prev_dis && prov->prev_dis->num == frame_num) {
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fd = prov->prev_dis;
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} else if (prov->prev_cap && prov->prev_cap->num == frame_num) {
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fd = prov->prev_cap;
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} else if (prov->frames) {
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fd = frame_data_sequence_find(prov->frames, frame_num);
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}
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return (fd && fd->has_ts) ? &fd->abs_ts : NULL;
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}
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static int
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frame_cmp(gconstpointer a, gconstpointer b, gpointer user_data _U_)
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{
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const frame_data *fdata1 = (const frame_data *) a;
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const frame_data *fdata2 = (const frame_data *) b;
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return (fdata1->num < fdata2->num) ? -1 :
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(fdata1->num > fdata2->num) ? 1 :
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0;
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}
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const char *
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cap_file_provider_get_interface_name(struct packet_provider_data *prov, guint32 interface_id, unsigned section_number)
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{
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wtapng_iface_descriptions_t *idb_info;
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wtap_block_t wtapng_if_descr = NULL;
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char* interface_name;
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idb_info = wtap_file_get_idb_info(prov->wth);
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unsigned gbl_iface_id = wtap_file_get_shb_global_interface_id(prov->wth, section_number, interface_id);
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if (gbl_iface_id < idb_info->interface_data->len)
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wtapng_if_descr = g_array_index(idb_info->interface_data, wtap_block_t, gbl_iface_id);
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g_free(idb_info);
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if (wtapng_if_descr) {
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if (wtap_block_get_string_option_value(wtapng_if_descr, OPT_IDB_NAME, &interface_name) == WTAP_OPTTYPE_SUCCESS)
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return interface_name;
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if (wtap_block_get_string_option_value(wtapng_if_descr, OPT_IDB_DESCRIPTION, &interface_name) == WTAP_OPTTYPE_SUCCESS)
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return interface_name;
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if (wtap_block_get_string_option_value(wtapng_if_descr, OPT_IDB_HARDWARE, &interface_name) == WTAP_OPTTYPE_SUCCESS)
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return interface_name;
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}
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return "unknown";
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}
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const char *
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cap_file_provider_get_interface_description(struct packet_provider_data *prov, guint32 interface_id, unsigned section_number)
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{
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wtapng_iface_descriptions_t *idb_info;
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wtap_block_t wtapng_if_descr = NULL;
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char* interface_name;
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idb_info = wtap_file_get_idb_info(prov->wth);
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interface_id = wtap_file_get_shb_global_interface_id(prov->wth, section_number, interface_id);
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if (interface_id < idb_info->interface_data->len)
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wtapng_if_descr = g_array_index(idb_info->interface_data, wtap_block_t, interface_id);
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g_free(idb_info);
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if (wtapng_if_descr) {
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if (wtap_block_get_string_option_value(wtapng_if_descr, OPT_IDB_DESCRIPTION, &interface_name) == WTAP_OPTTYPE_SUCCESS)
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return interface_name;
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}
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return NULL;
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}
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wtap_block_t
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cap_file_provider_get_modified_block(struct packet_provider_data *prov, const frame_data *fd)
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{
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if (prov->frames_modified_blocks)
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return (wtap_block_t)g_tree_lookup(prov->frames_modified_blocks, fd);
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/* ws_warning? */
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return NULL;
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}
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void
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cap_file_provider_set_modified_block(struct packet_provider_data *prov, frame_data *fd, const wtap_block_t new_block)
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{
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if (!prov->frames_modified_blocks)
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prov->frames_modified_blocks = g_tree_new_full(frame_cmp, NULL, NULL, (GDestroyNotify)wtap_block_unref);
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/* insert new packet block */
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g_tree_replace(prov->frames_modified_blocks, fd, (gpointer)new_block);
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fd->has_modified_block = TRUE;
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}
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