file_packet_provider.c

   1 /* file_packet_provider_data.c
   2  * Routines for a packet_provider_data for packets from a file.
   3  *
   4  * Wireshark - Network traffic analyzer
   5  * By Gerald Combs <gerald@wireshark.org>
   6  * Copyright 1998 Gerald Combs
   7  *
   8  * SPDX-License-Identifier: GPL-2.0-or-later
   9  */
  10
  11 #include <glib.h>
  12
  13 #include "cfile.h"
  14
  15 static int
  16 frame_cmp(gconstpointer a, gconstpointer b, gpointer user_data _U_)
  17 {
  18   const frame_data *fdata1 = (const frame_data *) a;
  19   const frame_data *fdata2 = (const frame_data *) b;
  20
  21   return (fdata1->num < fdata2->num) ? -1 :
  22     (fdata1->num > fdata2->num) ? 1 :
  23     0;
  24 }
  25
  26 const char *
  27 cap_file_provider_get_interface_name(struct packet_provider_data *prov, guint32 interface_id)
  28 {
  29   wtapng_iface_descriptions_t *idb_info;
  30   wtap_block_t wtapng_if_descr = NULL;
  31   char* interface_name;
  32
  33   idb_info = wtap_file_get_idb_info(prov->wth);
  34
  35   if (interface_id < idb_info->interface_data->len)
  36     wtapng_if_descr = g_array_index(idb_info->interface_data, wtap_block_t, interface_id);
  37
  38   g_free(idb_info);
  39
  40   if (wtapng_if_descr) {
  41     if (wtap_block_get_string_option_value(wtapng_if_descr, OPT_IDB_NAME, &interface_name) == WTAP_OPTTYPE_SUCCESS)
  42       return interface_name;
  43     if (wtap_block_get_string_option_value(wtapng_if_descr, OPT_IDB_DESCR, &interface_name) == WTAP_OPTTYPE_SUCCESS)
  44       return interface_name;
  45     if (wtap_block_get_string_option_value(wtapng_if_descr, OPT_IDB_HARDWARE, &interface_name) == WTAP_OPTTYPE_SUCCESS)
  46       return interface_name;
  47   }
  48   return "unknown";
  49 }
  50
  51 const char *
  52 cap_file_provider_get_interface_description(struct packet_provider_data *prov, guint32 interface_id)
  53 {
  54   wtapng_iface_descriptions_t *idb_info;
  55   wtap_block_t wtapng_if_descr = NULL;
  56   char* interface_name;
  57
  58   idb_info = wtap_file_get_idb_info(prov->wth);
  59
  60   if (interface_id < idb_info->interface_data->len)
  61     wtapng_if_descr = g_array_index(idb_info->interface_data, wtap_block_t, interface_id);
  62
  63   g_free(idb_info);
  64
  65   if (wtapng_if_descr) {
  66     if (wtap_block_get_string_option_value(wtapng_if_descr, OPT_IDB_DESCR, &interface_name) == WTAP_OPTTYPE_SUCCESS)
  67       return interface_name;
  68   }
  69   return NULL;
  70 }
  71
  72 const char *
  73 cap_file_provider_get_user_comment(struct packet_provider_data *prov, const frame_data *fd)
  74 {
  75   if (prov->frames_user_comments)
  76      return (const char *)g_tree_lookup(prov->frames_user_comments, fd);
  77
  78   /* g_warning? */
  79   return NULL;
  80 }
  81
  82 void
  83 cap_file_provider_set_user_comment(struct packet_provider_data *prov, frame_data *fd, const char *new_comment)
  84 {
  85   if (!prov->frames_user_comments)
  86     prov->frames_user_comments = g_tree_new_full(frame_cmp, NULL, NULL, g_free);
  87
  88   /* insert new packet comment */
  89   g_tree_replace(prov->frames_user_comments, fd, g_strdup(new_comment));
  90
  91   fd->has_user_comment = TRUE;
  92 }