epan/next_tvb.c

   1 /* next_tvb.c
   2  * Routines for "next tvb" list
   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 "config.h"
  12
  13 #include <glib.h>
  14
  15 #include <epan/packet.h>
  16
  17 #include "next_tvb.h"
  18
  19 next_tvb_list_t* next_tvb_list_new(wmem_allocator_t *pool) {
  20   next_tvb_list_t *list = wmem_new0(pool, next_tvb_list_t);
  21   list->pool = pool;
  22   return list;
  23 }
  24
  25 void next_tvb_add_handle(next_tvb_list_t *list, tvbuff_t *tvb, proto_tree *tree, dissector_handle_t handle) {
  26   next_tvb_item_t *item;
  27
  28   item = wmem_new(list->pool, next_tvb_item_t);
  29
  30   item->type = NTVB_HANDLE;
  31   item->handle = handle;
  32   item->tvb = tvb;
  33   item->tree = tree;
  34
  35   if (list->last) {
  36     list->last->next = item;
  37   } else {
  38     list->first = item;
  39   }
  40   item->next = NULL;
  41   item->previous = list->last;
  42   list->last = item;
  43   list->count++;
  44 }
  45
  46 void next_tvb_add_uint(next_tvb_list_t *list, tvbuff_t *tvb, proto_tree *tree, dissector_table_t table, uint32_t uint_val) {
  47   next_tvb_item_t *item;
  48
  49   item = wmem_new(list->pool, next_tvb_item_t);
  50
  51   item->type = NTVB_UINT;
  52   item->table = table;
  53   item->uint_val = uint_val;
  54   item->tvb = tvb;
  55   item->tree = tree;
  56
  57   if (list->last) {
  58     list->last->next = item;
  59   } else {
  60     list->first = item;
  61   }
  62   item->next = NULL;
  63   item->previous = list->last;
  64   list->last = item;
  65   list->count++;
  66 }
  67
  68 void next_tvb_add_string(next_tvb_list_t *list, tvbuff_t *tvb, proto_tree *tree, dissector_table_t table, const char *string) {
  69   next_tvb_item_t *item;
  70
  71   item = wmem_new(list->pool, next_tvb_item_t);
  72
  73   item->type = NTVB_STRING;
  74   item->table = table;
  75   item->string = string;
  76   item->tvb = tvb;
  77   item->tree = tree;
  78
  79   if (list->last) {
  80     list->last->next = item;
  81   } else {
  82     list->first = item;
  83   }
  84   item->next = NULL;
  85   item->previous = list->last;
  86   list->last = item;
  87   list->count++;
  88 }
  89
  90 void next_tvb_call(next_tvb_list_t *list, packet_info *pinfo, proto_tree *tree, dissector_handle_t handle, dissector_handle_t data_handle) {
  91   next_tvb_item_t *item;
  92
  93   item = list->first;
  94   while (item) {
  95     if (item->tvb && tvb_captured_length(item->tvb)) {
  96       switch (item->type) {
  97         case NTVB_HANDLE:
  98           call_dissector((item->handle) ? item->handle : ((handle) ? handle : data_handle), item->tvb, pinfo, (item->tree) ? item->tree : tree);
  99           break;
 100         case NTVB_UINT:
 101           dissector_try_uint(item->table, item->uint_val, item->tvb, pinfo, (item->tree) ? item->tree : tree);
 102           break;
 103         case NTVB_STRING:
 104           dissector_try_string(item->table, item->string, item->tvb, pinfo, (item->tree) ? item->tree : tree, NULL);
 105           break;
 106       }
 107     }
 108     item = item->next;
 109   }
 110 }
 111
 112
 113 /*
 114  * Editor modelines  -  https://www.wireshark.org/tools/modelines.html
 115  *
 116  * Local Variables:
 117  * c-basic-offset: 2
 118  * tab-width: 8
 119  * indent-tabs-mode: nil
 120  * End:
 121  *
 122  * ex: set shiftwidth=2 tabstop=8 expandtab:
 123  * :indentSize=2:tabSize=8:noTabs=true:
 124  */