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/* file_packet_provider_data.c
* Routines for a packet_provider_data for packets from a file.
*
* 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 <stdint.h>
#include <glib.h>
#include "cfile.h"
const nstime_t *
cap_file_provider_get_frame_ts(struct packet_provider_data *prov, uint32_t frame_num)
{
const frame_data *fd = NULL;
if (prov->ref && prov->ref->num == frame_num) {
fd = prov->ref;
} else if (prov->prev_dis && prov->prev_dis->num == frame_num) {
fd = prov->prev_dis;
} else if (prov->prev_cap && prov->prev_cap->num == frame_num) {
fd = prov->prev_cap;
} else if (prov->frames) {
fd = frame_data_sequence_find(prov->frames, frame_num);
}
return (fd && fd->has_ts) ? &fd->abs_ts : NULL;
}
static int
frame_cmp(const void *a, const void *b, void *user_data _U_)
{
const frame_data *fdata1 = (const frame_data *) a;
const frame_data *fdata2 = (const frame_data *) b;
return (fdata1->num < fdata2->num) ? -1 :
(fdata1->num > fdata2->num) ? 1 :
0;
}
const char *
cap_file_provider_get_interface_name(struct packet_provider_data *prov, uint32_t interface_id, unsigned section_number)
{
wtapng_iface_descriptions_t *idb_info;
wtap_block_t wtapng_if_descr = NULL;
char* interface_name;
idb_info = wtap_file_get_idb_info(prov->wth);
unsigned gbl_iface_id = wtap_file_get_shb_global_interface_id(prov->wth, section_number, interface_id);
if (gbl_iface_id < idb_info->interface_data->len)
wtapng_if_descr = g_array_index(idb_info->interface_data, wtap_block_t, gbl_iface_id);
g_free(idb_info);
if (wtapng_if_descr) {
if (wtap_block_get_string_option_value(wtapng_if_descr, OPT_IDB_NAME, &interface_name) == WTAP_OPTTYPE_SUCCESS)
return interface_name;
if (wtap_block_get_string_option_value(wtapng_if_descr, OPT_IDB_DESCRIPTION, &interface_name) == WTAP_OPTTYPE_SUCCESS)
return interface_name;
if (wtap_block_get_string_option_value(wtapng_if_descr, OPT_IDB_HARDWARE, &interface_name) == WTAP_OPTTYPE_SUCCESS)
return interface_name;
}
return "unknown";
}
const char *
cap_file_provider_get_interface_description(struct packet_provider_data *prov, uint32_t interface_id, unsigned section_number)
{
wtapng_iface_descriptions_t *idb_info;
wtap_block_t wtapng_if_descr = NULL;
char* interface_name;
idb_info = wtap_file_get_idb_info(prov->wth);
interface_id = wtap_file_get_shb_global_interface_id(prov->wth, section_number, interface_id);
if (interface_id < idb_info->interface_data->len)
wtapng_if_descr = g_array_index(idb_info->interface_data, wtap_block_t, interface_id);
g_free(idb_info);
if (wtapng_if_descr) {
if (wtap_block_get_string_option_value(wtapng_if_descr, OPT_IDB_DESCRIPTION, &interface_name) == WTAP_OPTTYPE_SUCCESS)
return interface_name;
}
return NULL;
}
wtap_block_t
cap_file_provider_get_modified_block(struct packet_provider_data *prov, const frame_data *fd)
{
if (prov->frames_modified_blocks)
return (wtap_block_t)g_tree_lookup(prov->frames_modified_blocks, fd);
/* ws_warning? */
return NULL;
}
void
cap_file_provider_set_modified_block(struct packet_provider_data *prov, frame_data *fd, const wtap_block_t new_block)
{
if (!prov->frames_modified_blocks)
prov->frames_modified_blocks = g_tree_new_full(frame_cmp, NULL, NULL, (GDestroyNotify)wtap_block_unref);
/* insert new packet block */
g_tree_replace(prov->frames_modified_blocks, fd, (void *)new_block);
fd->has_modified_block = 1;
}
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