forked from osmocom/wireshark
![Anders Broman](/assets/img/avatar_default.png)
This patch implements a function for dissecting bitfields with better control over the resulting representation than the existing proto_tree_add_bitmask() routine. This function will be used by reworked IPMI/ATCA dissector (bug 2048). The function is described in README.developer. In short, the differences are as follows: - The new function does not require a hf_XXX field for the whole bitmask. When the bitmask includes several unrelated fields, such hf_XXX field does not make sense. - The new function allows better control over the way the sub-item descriptions are added to the top-level item. For example, proto_tree_add_bitmask() function does not add non-enumerated integers, does not use true_false_string to display boolean. - The new function allows to specify "fallback" text for the top-level item which is used if no items were added to the top-level item. svn path=/trunk/; revision=25920
6056 lines
151 KiB
C
6056 lines
151 KiB
C
/* proto.c
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* Routines for protocol tree
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*
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* $Id$
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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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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <stdio.h>
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#include <string.h>
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#include <ctype.h>
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#include <glib.h>
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#include <float.h>
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#include "packet.h"
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#include "ptvcursor.h"
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#include "strutil.h"
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#include "addr_resolv.h"
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#include "oids.h"
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#include "plugins.h"
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#include "proto.h"
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#include "epan_dissect.h"
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#include "slab.h"
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#include "tvbuff.h"
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#include "emem.h"
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#include "charsets.h"
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#include "asm_utils.h"
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#include "column-utils.h"
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#define SUBTREE_ONCE_ALLOCATION_NUMBER 8
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#define SUBTREE_MAX_LEVELS 256
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typedef struct __subtree_lvl {
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gint cursor_offset;
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proto_item * it;
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proto_tree * tree;
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}subtree_lvl;
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struct ptvcursor {
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subtree_lvl *pushed_tree;
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guint8 pushed_tree_index;
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guint8 pushed_tree_max;
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proto_tree *tree;
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tvbuff_t *tvb;
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gint offset;
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};
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/* Candidates for assembler */
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int
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wrs_count_bitshift(guint32 bitmask)
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{
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int bitshift = 0;
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while ((bitmask & (1 << bitshift)) == 0)
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bitshift++;
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return bitshift;
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}
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#define cVALS(x) (const value_string*)(x)
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#if 1
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#define TRY_TO_FAKE_THIS_ITEM(tree, hfindex) \
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/* If this item is not referenced we dont have to do much work \
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at all but we should still return a node so that \
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field items below this node ( think proto_item_add_subtree() )\
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will still have somewhere to attach to \
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or else filtering will not work (they would be ignored since tree\
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would be NULL). \
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DONT try to fake a node where PITEM_FINFO(pi) is NULL \
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since dissectors that want to do proto_item_set_len() or \
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other operations that dereference this would crash. \
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We dont fake FT_PROTOCOL either since these are cheap and \
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some stuff (proto hier stat) assumes they always exist. \
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*/ \
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if(!(PTREE_DATA(tree)->visible)){ \
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if(PITEM_FINFO(tree)){ \
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register header_field_info *hfinfo; \
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PROTO_REGISTRAR_GET_NTH(hfindex, hfinfo); \
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if((hfinfo->ref_count == 0) \
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&& (hfinfo->type!=FT_PROTOCOL)){ \
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/* just return tree back to the caller */\
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return tree; \
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} \
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} \
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}
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#else
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#define TRY_TO_FAKE_THIS_ITEM(tree, hfindex) ;
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#endif
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static gboolean
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proto_tree_free_node(proto_node *node, gpointer data);
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static void fill_label_boolean(field_info *fi, gchar *label_str);
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static void fill_label_uint(field_info *fi, gchar *label_str);
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static void fill_label_uint64(field_info *fi, gchar *label_str);
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static void fill_label_bitfield(field_info *fi, gchar *label_str);
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static void fill_label_int(field_info *fi, gchar *label_str);
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static void fill_label_int64(field_info *fi, gchar *label_str);
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int hfinfo_bitwidth(header_field_info *hfinfo);
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static const char* hfinfo_uint_vals_format(header_field_info *hfinfo);
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static const char* hfinfo_uint_format(header_field_info *hfinfo);
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static const char* hfinfo_uint_value_format(header_field_info *hfinfo);
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static const char* hfinfo_uint64_format(header_field_info *hfinfo);
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static const char* hfinfo_int_vals_format(header_field_info *hfinfo);
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static const char* hfinfo_int_format(header_field_info *hfinfo);
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static const char* hfinfo_int_value_format(header_field_info *hfinfo);
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static const char* hfinfo_int64_format(header_field_info *hfinfo);
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static proto_item*
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proto_tree_add_node(proto_tree *tree, field_info *fi);
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static header_field_info *
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get_hfi_and_length(int hfindex, tvbuff_t *tvb, gint start, gint *length,
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gint *item_length);
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static field_info *
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new_field_info(proto_tree *tree, header_field_info *hfinfo, tvbuff_t *tvb,
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gint start, gint item_length);
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static field_info *
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alloc_field_info(proto_tree *tree, int hfindex, tvbuff_t *tvb,
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gint start, gint *length);
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static proto_item *
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proto_tree_add_pi(proto_tree *tree, int hfindex, tvbuff_t *tvb,
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gint start, gint *length, field_info **pfi);
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static void
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proto_tree_set_representation_value(proto_item *pi, const char *format, va_list ap);
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static void
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proto_tree_set_representation(proto_item *pi, const char *format, va_list ap);
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static void
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proto_tree_set_protocol_tvb(field_info *fi, tvbuff_t *tvb);
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static void
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proto_tree_set_bytes(field_info *fi, const guint8* start_ptr, gint length);
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static void
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proto_tree_set_bytes_tvb(field_info *fi, tvbuff_t *tvb, gint offset, gint length);
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static void
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proto_tree_set_time(field_info *fi, nstime_t *value_ptr);
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static void
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proto_tree_set_string(field_info *fi, const char* value);
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static void
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proto_tree_set_string_tvb(field_info *fi, tvbuff_t *tvb, gint start, gint length);
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static void
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proto_tree_set_ebcdic_string_tvb(field_info *fi, tvbuff_t *tvb, gint start, gint length);
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static void
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proto_tree_set_ether(field_info *fi, const guint8* value);
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static void
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proto_tree_set_ether_tvb(field_info *fi, tvbuff_t *tvb, gint start);
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static void
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proto_tree_set_ipxnet(field_info *fi, guint32 value);
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static void
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proto_tree_set_ipv4(field_info *fi, guint32 value);
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static void
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proto_tree_set_ipv6(field_info *fi, const guint8* value_ptr);
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static void
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proto_tree_set_ipv6_tvb(field_info *fi, tvbuff_t *tvb, gint start);
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static void
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proto_tree_set_guid(field_info *fi, const e_guid_t *value_ptr);
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static void
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proto_tree_set_guid_tvb(field_info *fi, tvbuff_t *tvb, gint start, gboolean little_endian);
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static void
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proto_tree_set_oid(field_info *fi, const guint8* value_ptr, gint length);
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static void
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proto_tree_set_oid_tvb(field_info *fi, tvbuff_t *tvb, gint start, gint length);
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static void
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proto_tree_set_boolean(field_info *fi, guint32 value);
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static void
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proto_tree_set_float(field_info *fi, float value);
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static void
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proto_tree_set_double(field_info *fi, double value);
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static void
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proto_tree_set_uint(field_info *fi, guint32 value);
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static void
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proto_tree_set_int(field_info *fi, gint32 value);
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static void
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proto_tree_set_uint64(field_info *fi, guint64 value);
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static void
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proto_tree_set_uint64_tvb(field_info *fi, tvbuff_t *tvb, gint start, guint length, gboolean little_endian);
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static gboolean
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proto_item_add_bitmask_tree(proto_item *item, tvbuff_t *tvb, int offset, int len, gint ett,
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const gint **fields, gboolean little_endian, int flags, gboolean first);
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static int proto_register_field_init(header_field_info *hfinfo, int parent);
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/* special-case header field used within proto.c */
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int hf_text_only = -1;
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/* Structure for information about a protocol */
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struct _protocol {
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const char *name; /* long description */
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const char *short_name; /* short description */
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const char *filter_name; /* name of this protocol in filters */
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int proto_id; /* field ID for this protocol */
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GList *fields; /* fields for this protocol */
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GList *last_field; /* pointer to end of list of fields */
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gboolean is_enabled; /* TRUE if protocol is enabled */
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gboolean can_toggle; /* TRUE if is_enabled can be changed */
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};
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/* List of all protocols */
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static GList *protocols = NULL;
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#define INITIAL_NUM_PROTOCOL_HFINFO 200
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/* Contains information about protocols and header fields. Used when
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* dissectors register their data */
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static GMemChunk *gmc_hfinfo = NULL;
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/* Contains information about a field when a dissector calls
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* proto_tree_add_item. */
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SLAB_ITEM_TYPE_DEFINE(field_info)
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static SLAB_FREE_LIST_DEFINE(field_info)
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static field_info *field_info_tmp=NULL;
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#define FIELD_INFO_NEW(fi) \
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SLAB_ALLOC(fi, field_info)
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#define FIELD_INFO_FREE(fi) \
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SLAB_FREE(fi, field_info)
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/* Contains the space for proto_nodes. */
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SLAB_ITEM_TYPE_DEFINE(proto_node)
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static SLAB_FREE_LIST_DEFINE(proto_node)
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#define PROTO_NODE_NEW(node) \
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SLAB_ALLOC(node, proto_node) \
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node->first_child = NULL; \
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node->last_child = NULL; \
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node->next = NULL;
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#define PROTO_NODE_FREE(node) \
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SLAB_FREE(node, proto_node)
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/* String space for protocol and field items for the GUI */
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SLAB_ITEM_TYPE_DEFINE(item_label_t)
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static SLAB_FREE_LIST_DEFINE(item_label_t)
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#define ITEM_LABEL_NEW(il) \
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SLAB_ALLOC(il, item_label_t)
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#define ITEM_LABEL_FREE(il) \
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SLAB_FREE(il, item_label_t)
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#define PROTO_REGISTRAR_GET_NTH(hfindex, hfinfo) \
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DISSECTOR_ASSERT((guint)hfindex < gpa_hfinfo.len); \
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hfinfo=gpa_hfinfo.hfi[hfindex];
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/* List which stores protocols and fields that have been registered */
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typedef struct _gpa_hfinfo_t {
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guint32 len;
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guint32 allocated_len;
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header_field_info **hfi;
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} gpa_hfinfo_t;
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gpa_hfinfo_t gpa_hfinfo;
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/* Balanced tree of abbreviations and IDs */
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static GTree *gpa_name_tree = NULL;
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static header_field_info *same_name_hfinfo;
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static void save_same_name_hfinfo(gpointer data)
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{
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same_name_hfinfo = (header_field_info*)data;
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}
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/* Points to the first element of an array of Booleans, indexed by
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a subtree item type; that array element is TRUE if subtrees of
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an item of that type are to be expanded. */
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gboolean *tree_is_expanded;
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/* Number of elements in that array. */
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int num_tree_types;
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/* Name hashtables for fast detection of duplicate names */
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static GHashTable* proto_names = NULL;
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static GHashTable* proto_short_names = NULL;
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static GHashTable* proto_filter_names = NULL;
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static gint
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proto_compare_name(gconstpointer p1_arg, gconstpointer p2_arg)
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{
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const protocol_t *p1 = p1_arg;
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const protocol_t *p2 = p2_arg;
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return g_ascii_strcasecmp(p1->short_name, p2->short_name);
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}
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/* initialize data structures and register protocols and fields */
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void
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proto_init(void (register_all_protocols_func)(register_cb cb, gpointer client_data),
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void (register_all_handoffs_func)(register_cb cb, gpointer client_data),
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register_cb cb,
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gpointer client_data)
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{
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static hf_register_info hf[] = {
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{ &hf_text_only,
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{ "Text item", "", FT_NONE, BASE_NONE, NULL, 0x0,
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NULL, HFILL }},
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};
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proto_names = g_hash_table_new(g_int_hash, g_int_equal);
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proto_short_names = g_hash_table_new(wrs_str_hash, g_str_equal);
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proto_filter_names = g_hash_table_new(wrs_str_hash, g_str_equal);
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proto_cleanup();
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gmc_hfinfo = g_mem_chunk_new("gmc_hfinfo",
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sizeof(header_field_info),
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INITIAL_NUM_PROTOCOL_HFINFO * sizeof(header_field_info),
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G_ALLOC_ONLY);
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gpa_hfinfo.len=0;
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gpa_hfinfo.allocated_len=0;
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gpa_hfinfo.hfi=NULL;
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gpa_name_tree = g_tree_new_full(wrs_strcmp_with_data, NULL, NULL, save_same_name_hfinfo);
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/* Initialize the ftype subsystem */
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ftypes_initialize();
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/* Register one special-case FT_TEXT_ONLY field for use when
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converting wireshark to new-style proto_tree. These fields
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are merely strings on the GUI tree; they are not filterable */
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proto_register_field_array(-1, hf, array_length(hf));
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/* Have each built-in dissector register its protocols, fields,
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dissector tables, and dissectors to be called through a
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handle, and do whatever one-time initialization it needs to
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do. */
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register_all_protocols_func(cb, client_data);
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#ifdef HAVE_PLUGINS
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/* Now scan for plugins and load all the ones we find, calling
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their register routines to do the stuff described above. */
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if(cb)
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(*cb)(RA_PLUGIN_REGISTER, NULL, client_data);
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init_plugins();
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register_all_plugin_registrations();
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#endif
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/* Now call the "handoff registration" routines of all built-in
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dissectors; those routines register the dissector in other
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dissectors' handoff tables, and fetch any dissector handles
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they need. */
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register_all_handoffs_func(cb, client_data);
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#ifdef HAVE_PLUGINS
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/* Now do the same with plugins. */
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if(cb)
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(*cb)(RA_PLUGIN_HANDOFF, NULL, client_data);
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register_all_plugin_handoffs();
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#endif
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/* sort the protocols by protocol name */
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protocols = g_list_sort(protocols, proto_compare_name);
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/* We've assigned all the subtree type values; allocate the array
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for them, and zero it out. */
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tree_is_expanded = g_malloc(num_tree_types*sizeof (gboolean));
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memset(tree_is_expanded, 0, num_tree_types*sizeof (gboolean));
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}
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void
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proto_cleanup(void)
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{
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/* Free the abbrev/ID GTree */
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if (gpa_name_tree) {
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g_tree_destroy(gpa_name_tree);
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gpa_name_tree = NULL;
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}
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if (gmc_hfinfo)
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g_mem_chunk_destroy(gmc_hfinfo);
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if(gpa_hfinfo.allocated_len){
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gpa_hfinfo.len=0;
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gpa_hfinfo.allocated_len=0;
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g_free(gpa_hfinfo.hfi);
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gpa_hfinfo.hfi=NULL;
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}
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if (tree_is_expanded != NULL)
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g_free(tree_is_expanded);
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}
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static gboolean
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proto_tree_traverse_pre_order(proto_tree *tree, proto_tree_traverse_func func,
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gpointer data)
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{
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proto_node *pnode = tree;
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proto_node *child;
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proto_node *current;
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if (func(pnode, data))
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return TRUE;
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child = pnode->first_child;
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while (child != NULL) {
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/*
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* The routine we call might modify the child, e.g. by
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* freeing it, so we get the child's successor before
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* calling that routine.
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*/
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current = child;
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child = current->next;
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if (proto_tree_traverse_pre_order((proto_tree *)current, func,
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data))
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return TRUE;
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}
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return FALSE;
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}
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gboolean
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proto_tree_traverse_in_order(proto_tree *tree, proto_tree_traverse_func func,
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gpointer data)
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{
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proto_node *pnode = tree;
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proto_node *child;
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proto_node *current;
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child = pnode->first_child;
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if (child != NULL) {
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/*
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* The routine we call might modify the child, e.g. by
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* freeing it, so we get the child's successor before
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* calling that routine.
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*/
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current = child;
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child = current->next;
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if (proto_tree_traverse_in_order((proto_tree *)current, func,
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data))
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return TRUE;
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if (func(pnode, data))
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return TRUE;
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|
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while (child != NULL) {
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/*
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* The routine we call might modify the child, e.g. by
|
|
* freeing it, so we get the child's successor before
|
|
* calling that routine.
|
|
*/
|
|
current = child;
|
|
child = current->next;
|
|
if (proto_tree_traverse_in_order((proto_tree *)current,
|
|
func, data))
|
|
return TRUE;
|
|
}
|
|
} else {
|
|
if (func(pnode, data))
|
|
return TRUE;
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
void
|
|
proto_tree_children_foreach(proto_tree *tree, proto_tree_foreach_func func,
|
|
gpointer data)
|
|
{
|
|
proto_node *node = tree;
|
|
proto_node *current;
|
|
|
|
node = node->first_child;
|
|
while (node != NULL) {
|
|
current = node;
|
|
node = current->next;
|
|
func((proto_tree *)current, data);
|
|
}
|
|
}
|
|
|
|
/* frees the resources that the dissection a proto_tree uses */
|
|
void
|
|
proto_tree_free(proto_tree *tree)
|
|
{
|
|
proto_tree_traverse_in_order(tree, proto_tree_free_node, NULL);
|
|
}
|
|
|
|
static void
|
|
free_GPtrArray_value(gpointer key, gpointer value, gpointer user_data _U_)
|
|
{
|
|
GPtrArray *ptrs = value;
|
|
gint hfid = (gint)(long)key;
|
|
header_field_info *hfinfo;
|
|
|
|
|
|
PROTO_REGISTRAR_GET_NTH(hfid, hfinfo);
|
|
if(hfinfo->ref_count){
|
|
/* when a field is referenced by a filter this also
|
|
affects the refcount for the parent protocol so we need
|
|
to adjust the refcount for the parent as well
|
|
*/
|
|
if( (hfinfo->parent != -1) && (hfinfo->ref_count) ){
|
|
header_field_info *parent_hfinfo;
|
|
PROTO_REGISTRAR_GET_NTH(hfinfo->parent, parent_hfinfo);
|
|
parent_hfinfo->ref_count -= hfinfo->ref_count;
|
|
}
|
|
hfinfo->ref_count = 0;
|
|
}
|
|
|
|
g_ptr_array_free(ptrs, TRUE);
|
|
}
|
|
|
|
static void
|
|
free_node_tree_data(tree_data_t *tree_data)
|
|
{
|
|
/* Free all the GPtrArray's in the interesting_hfids hash. */
|
|
g_hash_table_foreach(tree_data->interesting_hfids,
|
|
free_GPtrArray_value, NULL);
|
|
|
|
/* And then destroy the hash. */
|
|
g_hash_table_destroy(tree_data->interesting_hfids);
|
|
|
|
/* And finally the tree_data_t itself. */
|
|
g_free(tree_data);
|
|
}
|
|
|
|
#define FREE_NODE_FIELD_INFO(finfo) \
|
|
if(finfo->rep){ \
|
|
ITEM_LABEL_FREE(finfo->rep); \
|
|
} \
|
|
FVALUE_CLEANUP(&finfo->value); \
|
|
FIELD_INFO_FREE(finfo);
|
|
|
|
static gboolean
|
|
proto_tree_free_node(proto_node *node, gpointer data _U_)
|
|
{
|
|
field_info *finfo = PITEM_FINFO(node);
|
|
|
|
if (finfo == NULL) {
|
|
/* This is the root node. Destroy the per-tree data.
|
|
* There is no field_info to destroy. */
|
|
free_node_tree_data(PTREE_DATA(node));
|
|
}
|
|
else {
|
|
/* This is a child node. Don't free the per-tree data, but
|
|
* do free the field_info data. */
|
|
FREE_NODE_FIELD_INFO(finfo);
|
|
}
|
|
|
|
/* Free the proto_node. */
|
|
PROTO_NODE_FREE(node);
|
|
|
|
return FALSE; /* FALSE = do not end traversal of protocol tree */
|
|
}
|
|
|
|
/* Is the parsing being done for a visible proto_tree or an invisible one?
|
|
* By setting this correctly, the proto_tree creation is sped up by not
|
|
* having to call g_vsnprintf and copy strings around.
|
|
*/
|
|
void
|
|
proto_tree_set_visible(proto_tree *tree, gboolean visible)
|
|
{
|
|
PTREE_DATA(tree)->visible = visible;
|
|
}
|
|
|
|
/* Assume dissector set only its protocol fields.
|
|
This function is called by dissectors and allowes to speed up filtering
|
|
in wireshark, if this function returns FALSE it is safe to reset tree to NULL
|
|
and thus skip calling most of the expensive proto_tree_add_...()
|
|
functions.
|
|
If the tree is visible we implicitely assume the field is referenced.
|
|
*/
|
|
gboolean
|
|
proto_field_is_referenced(proto_tree *tree, int proto_id)
|
|
{
|
|
register header_field_info *hfinfo;
|
|
|
|
|
|
if (!tree)
|
|
return FALSE;
|
|
|
|
if (PTREE_DATA(tree)->visible)
|
|
return TRUE;
|
|
|
|
PROTO_REGISTRAR_GET_NTH(proto_id, hfinfo);
|
|
if (hfinfo->ref_count != 0)
|
|
return TRUE;
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
|
|
/* Finds a record in the hf_info_records array by id. */
|
|
header_field_info*
|
|
proto_registrar_get_nth(guint hfindex)
|
|
{
|
|
register header_field_info *hfinfo;
|
|
|
|
PROTO_REGISTRAR_GET_NTH(hfindex, hfinfo);
|
|
return hfinfo;
|
|
}
|
|
|
|
|
|
/* Prefix initialization
|
|
* this allows for a dissector to register a display filter name prefix
|
|
* so that it can delay the initialization of the hf array as long as
|
|
* possible.
|
|
*/
|
|
|
|
/* compute a hash for the part before the dot of a display filter */
|
|
static guint prefix_hash (gconstpointer key) {
|
|
/* end the string at the dot and compute its hash */
|
|
gchar* copy = ep_strdup(key);
|
|
gchar* c = copy;
|
|
|
|
for (;*c ;c++) {
|
|
if (*c == '.') {
|
|
*c = 0;
|
|
break;
|
|
}
|
|
}
|
|
|
|
return g_str_hash(copy);
|
|
}
|
|
|
|
/* are both strings equal up to the end or the dot? */
|
|
static gboolean prefix_equal (gconstpointer ap,gconstpointer bp) {
|
|
const gchar* a = ap;
|
|
const gchar* b = bp;
|
|
|
|
do {
|
|
gchar ac = *a++;
|
|
gchar bc = *b++;
|
|
|
|
if ((ac == '.' || ac == '\0') && (bc == '.' || bc == '\0')) return TRUE;
|
|
|
|
if ( (ac == '.' || ac == '\0') && ! (bc == '.' || bc == '\0') ) return FALSE;
|
|
if ( (bc == '.' || bc == '\0') && ! (ac == '.' || ac == '\0') ) return FALSE;
|
|
|
|
if (ac != bc) return FALSE;
|
|
} while(1);
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
|
|
/* indexed by prefix, contains initializers */
|
|
static GHashTable* prefixes = NULL;
|
|
|
|
|
|
/* Register a new prefix for "delayed" initialization of field arrays */
|
|
void
|
|
proto_register_prefix(const char *prefix, prefix_initializer_t pi ) {
|
|
if (! prefixes ) {
|
|
prefixes = g_hash_table_new(prefix_hash,prefix_equal);
|
|
}
|
|
|
|
g_hash_table_insert(prefixes,(gpointer)prefix,pi);
|
|
}
|
|
|
|
/* helper to call all prefix initializers */
|
|
static gboolean initialize_prefix(gpointer k, gpointer v, gpointer u _U_) {
|
|
((prefix_initializer_t)v)(k);
|
|
return TRUE;
|
|
}
|
|
|
|
/** Initialize every remaining uninitialized prefix. */
|
|
void proto_initialize_all_prefixes(void) {
|
|
g_hash_table_foreach_remove(prefixes, initialize_prefix, NULL);
|
|
}
|
|
|
|
/* Finds a record in the hf_info_records array by name.
|
|
* If it fails to find it in the already registered fields,
|
|
* it tries to find and call an initializer in the prefixes
|
|
* table and if so it looks again.
|
|
*/
|
|
header_field_info*
|
|
proto_registrar_get_byname(const char *field_name)
|
|
{
|
|
header_field_info* hfinfo;
|
|
prefix_initializer_t pi;
|
|
|
|
DISSECTOR_ASSERT(field_name != NULL);
|
|
|
|
hfinfo = g_tree_lookup(gpa_name_tree, field_name);
|
|
|
|
if (hfinfo) return hfinfo;
|
|
|
|
if (!prefixes) return NULL;
|
|
|
|
if(( pi = g_hash_table_lookup(prefixes,field_name) )) {
|
|
pi(field_name);
|
|
g_hash_table_remove(prefixes,field_name);
|
|
} else {
|
|
return NULL;
|
|
}
|
|
|
|
return g_tree_lookup(gpa_name_tree, field_name);
|
|
}
|
|
|
|
|
|
void ptvcursor_new_subtree_levels(ptvcursor_t * ptvc)
|
|
{
|
|
subtree_lvl * pushed_tree;
|
|
|
|
DISSECTOR_ASSERT(ptvc->pushed_tree_max <= SUBTREE_MAX_LEVELS-SUBTREE_ONCE_ALLOCATION_NUMBER);
|
|
ptvc->pushed_tree_max += SUBTREE_ONCE_ALLOCATION_NUMBER;
|
|
|
|
pushed_tree = ep_alloc(sizeof(subtree_lvl) * ptvc->pushed_tree_max);
|
|
DISSECTOR_ASSERT(pushed_tree != NULL);
|
|
if (ptvc->pushed_tree)
|
|
memcpy(pushed_tree, ptvc->pushed_tree, ptvc->pushed_tree_max - SUBTREE_ONCE_ALLOCATION_NUMBER);
|
|
ptvc->pushed_tree = pushed_tree;
|
|
}
|
|
|
|
void ptvcursor_free_subtree_levels(ptvcursor_t * ptvc)
|
|
{
|
|
ptvc->pushed_tree = NULL;
|
|
ptvc->pushed_tree_max = 0;
|
|
DISSECTOR_ASSERT(ptvc->pushed_tree_index ==0);
|
|
ptvc->pushed_tree_index = 0;
|
|
}
|
|
|
|
/* Allocates an initializes a ptvcursor_t with 3 variables:
|
|
* proto_tree, tvbuff, and offset. */
|
|
ptvcursor_t*
|
|
ptvcursor_new(proto_tree *tree, tvbuff_t *tvb, gint offset)
|
|
{
|
|
ptvcursor_t *ptvc;
|
|
|
|
ptvc = ep_alloc(sizeof(ptvcursor_t));
|
|
ptvc->tree = tree;
|
|
ptvc->tvb = tvb;
|
|
ptvc->offset = offset;
|
|
ptvc->pushed_tree= NULL;
|
|
ptvc->pushed_tree_max= 0;
|
|
ptvc->pushed_tree_index= 0;
|
|
return ptvc;
|
|
}
|
|
|
|
|
|
/* Frees memory for ptvcursor_t, but nothing deeper than that. */
|
|
void
|
|
ptvcursor_free(ptvcursor_t *ptvc)
|
|
{
|
|
ptvcursor_free_subtree_levels(ptvc);
|
|
/*g_free(ptvc);*/
|
|
}
|
|
|
|
/* Returns tvbuff. */
|
|
tvbuff_t*
|
|
ptvcursor_tvbuff(ptvcursor_t* ptvc)
|
|
{
|
|
return ptvc->tvb;
|
|
}
|
|
|
|
/* Returns current offset. */
|
|
gint
|
|
ptvcursor_current_offset(ptvcursor_t* ptvc)
|
|
{
|
|
return ptvc->offset;
|
|
}
|
|
|
|
proto_tree*
|
|
ptvcursor_tree(ptvcursor_t* ptvc)
|
|
{
|
|
if (!ptvc)
|
|
return NULL;
|
|
|
|
return ptvc->tree;
|
|
}
|
|
|
|
void
|
|
ptvcursor_set_tree(ptvcursor_t* ptvc, proto_tree *tree)
|
|
{
|
|
ptvc->tree = tree;
|
|
}
|
|
|
|
/* creates a subtree, sets it as the working tree and pushes the old working tree */
|
|
proto_tree*
|
|
ptvcursor_push_subtree(ptvcursor_t *ptvc, proto_item *it, gint ett_subtree)
|
|
{
|
|
subtree_lvl * subtree;
|
|
if (ptvc->pushed_tree_index >= ptvc->pushed_tree_max)
|
|
ptvcursor_new_subtree_levels(ptvc);
|
|
|
|
subtree = ptvc->pushed_tree+ptvc->pushed_tree_index;
|
|
subtree->tree = ptvc->tree;
|
|
subtree->it= NULL;
|
|
ptvc->pushed_tree_index++;
|
|
return ptvcursor_set_subtree(ptvc, it, ett_subtree);
|
|
}
|
|
|
|
/* pops a subtree */
|
|
void
|
|
ptvcursor_pop_subtree(ptvcursor_t *ptvc)
|
|
{
|
|
subtree_lvl * subtree;
|
|
if (ptvc->pushed_tree_index <= 0)
|
|
return;
|
|
|
|
ptvc->pushed_tree_index--;
|
|
subtree = ptvc->pushed_tree+ptvc->pushed_tree_index;
|
|
if (subtree->it != NULL)
|
|
proto_item_set_len(subtree->it, ptvcursor_current_offset(ptvc) - subtree->cursor_offset);
|
|
ptvc->tree = subtree->tree;
|
|
}
|
|
|
|
/* saves the current tvb offset and the item in the current subtree level */
|
|
static void
|
|
ptvcursor_subtree_set_item(ptvcursor_t * ptvc, proto_item * it)
|
|
{
|
|
subtree_lvl * subtree;
|
|
|
|
DISSECTOR_ASSERT(ptvc->pushed_tree_index > 0);
|
|
|
|
subtree = ptvc->pushed_tree+ptvc->pushed_tree_index-1;
|
|
subtree->it = it;
|
|
subtree->cursor_offset = ptvcursor_current_offset(ptvc);
|
|
}
|
|
|
|
/* Creates a subtree and adds it to the cursor as the working tree but does not
|
|
* save the old working tree */
|
|
proto_tree*
|
|
ptvcursor_set_subtree(ptvcursor_t *ptvc, proto_item *it, gint ett_subtree)
|
|
{
|
|
ptvc->tree = proto_item_add_subtree(it, ett_subtree);
|
|
return ptvc->tree;
|
|
}
|
|
|
|
proto_tree* ptvcursor_add_subtree_item(ptvcursor_t * ptvc, proto_item * it, gint ett_subtree, gint length)
|
|
{
|
|
ptvcursor_push_subtree(ptvc, it, ett_subtree);
|
|
if (length == SUBTREE_UNDEFINED_LENGTH)
|
|
ptvcursor_subtree_set_item(ptvc, it);
|
|
return ptvcursor_tree(ptvc);
|
|
}
|
|
|
|
/* Add an item to the tree and create a subtree
|
|
* If the length is unknown, length may be defined as SUBTREE_UNDEFINED_LENGTH.
|
|
* In this case, when the subtree will be closed, the parent item length will
|
|
* be equal to the advancement of the cursor since the creation of the subtree.
|
|
*/
|
|
proto_tree* ptvcursor_add_with_subtree(ptvcursor_t * ptvc, int hfindex, gint length,
|
|
gboolean little_endian, gint ett_subtree)
|
|
{
|
|
proto_item * it;
|
|
it = ptvcursor_add_no_advance(ptvc, hfindex, length, little_endian);
|
|
return ptvcursor_add_subtree_item(ptvc, it, ett_subtree, length);
|
|
}
|
|
|
|
static proto_item *
|
|
proto_tree_add_text_node(proto_tree *tree, tvbuff_t *tvb, gint start, gint length);
|
|
|
|
/* Add a text node to the tree and create a subtree
|
|
* If the length is unknown, length may be defined as SUBTREE_UNDEFINED_LENGTH.
|
|
* In this case, when the subtree will be closed, the item length will be equal
|
|
* to the advancement of the cursor since the creation of the subtree.
|
|
*/
|
|
proto_tree * ptvcursor_add_text_with_subtree(ptvcursor_t * ptvc, gint length,
|
|
gint ett_subtree, const char *format, ...)
|
|
{
|
|
proto_item * it;
|
|
va_list ap;
|
|
|
|
it = proto_tree_add_text_node(ptvcursor_tree(ptvc), ptvcursor_tvbuff(ptvc),
|
|
ptvcursor_current_offset(ptvc), length);
|
|
|
|
va_start(ap, format);
|
|
proto_tree_set_representation(it, format, ap);
|
|
va_end(ap);
|
|
|
|
return ptvcursor_add_subtree_item(ptvc, it, ett_subtree, length);
|
|
}
|
|
|
|
/* Add a text-only node, leaving it to our caller to fill the text in */
|
|
static proto_item *
|
|
proto_tree_add_text_node(proto_tree *tree, tvbuff_t *tvb, gint start, gint length)
|
|
{
|
|
proto_item *pi;
|
|
|
|
pi = proto_tree_add_pi(tree, hf_text_only, tvb, start, &length, NULL);
|
|
if (pi == NULL)
|
|
return(NULL);
|
|
|
|
return pi;
|
|
}
|
|
|
|
/* Add a text-only node to the proto_tree */
|
|
proto_item *
|
|
proto_tree_add_text(proto_tree *tree, tvbuff_t *tvb, gint start, gint length,
|
|
const char *format, ...)
|
|
{
|
|
proto_item *pi;
|
|
va_list ap;
|
|
|
|
pi = proto_tree_add_text_node(tree, tvb, start, length);
|
|
if (pi == NULL)
|
|
return(NULL);
|
|
|
|
va_start(ap, format);
|
|
proto_tree_set_representation(pi, format, ap);
|
|
va_end(ap);
|
|
|
|
return pi;
|
|
}
|
|
|
|
/* Add a text-only node to the proto_tree (va_list version) */
|
|
proto_item *
|
|
proto_tree_add_text_valist(proto_tree *tree, tvbuff_t *tvb, gint start,
|
|
gint length, const char *format, va_list ap)
|
|
{
|
|
proto_item *pi;
|
|
|
|
pi = proto_tree_add_text_node(tree, tvb, start, length);
|
|
if (pi == NULL)
|
|
return(NULL);
|
|
|
|
proto_tree_set_representation(pi, format, ap);
|
|
|
|
return pi;
|
|
}
|
|
|
|
/* Add a text-only node for debugging purposes. The caller doesn't need
|
|
* to worry about tvbuff, start, or length. Debug message gets sent to
|
|
* STDOUT, too */
|
|
proto_item *
|
|
proto_tree_add_debug_text(proto_tree *tree, const char *format, ...)
|
|
{
|
|
proto_item *pi;
|
|
va_list ap;
|
|
|
|
pi = proto_tree_add_text_node(tree, NULL, 0, 0);
|
|
|
|
va_start(ap, format);
|
|
if (pi)
|
|
proto_tree_set_representation(pi, format, ap);
|
|
vprintf(format, ap);
|
|
va_end(ap);
|
|
printf("\n");
|
|
|
|
return pi;
|
|
}
|
|
|
|
|
|
static guint32
|
|
get_uint_value(tvbuff_t *tvb, gint offset, gint length, gboolean little_endian)
|
|
{
|
|
guint32 value;
|
|
|
|
switch (length) {
|
|
|
|
case 1:
|
|
value = tvb_get_guint8(tvb, offset);
|
|
break;
|
|
|
|
case 2:
|
|
value = little_endian ? tvb_get_letohs(tvb, offset)
|
|
: tvb_get_ntohs(tvb, offset);
|
|
break;
|
|
|
|
case 3:
|
|
value = little_endian ? tvb_get_letoh24(tvb, offset)
|
|
: tvb_get_ntoh24(tvb, offset);
|
|
break;
|
|
|
|
case 4:
|
|
value = little_endian ? tvb_get_letohl(tvb, offset)
|
|
: tvb_get_ntohl(tvb, offset);
|
|
break;
|
|
|
|
default:
|
|
DISSECTOR_ASSERT_NOT_REACHED();
|
|
value = 0;
|
|
break;
|
|
}
|
|
return value;
|
|
}
|
|
|
|
static gint32
|
|
get_int_value(tvbuff_t *tvb, gint offset, gint length, gboolean little_endian)
|
|
{
|
|
gint32 value;
|
|
|
|
switch (length) {
|
|
|
|
case 1:
|
|
value = (gint8)tvb_get_guint8(tvb, offset);
|
|
break;
|
|
|
|
case 2:
|
|
value = (gint16) (little_endian ? tvb_get_letohs(tvb, offset)
|
|
: tvb_get_ntohs(tvb, offset));
|
|
break;
|
|
|
|
case 3:
|
|
value = little_endian ? tvb_get_letoh24(tvb, offset)
|
|
: tvb_get_ntoh24(tvb, offset);
|
|
if (value & 0x00800000) {
|
|
/* Sign bit is set; sign-extend it. */
|
|
value |= 0xFF000000;
|
|
}
|
|
break;
|
|
|
|
case 4:
|
|
value = little_endian ? tvb_get_letohl(tvb, offset)
|
|
: tvb_get_ntohl(tvb, offset);
|
|
break;
|
|
|
|
default:
|
|
DISSECTOR_ASSERT_NOT_REACHED();
|
|
value = 0;
|
|
break;
|
|
}
|
|
return value;
|
|
}
|
|
|
|
/* Add an item to a proto_tree, using the text label registered to that item;
|
|
the item is extracted from the tvbuff handed to it. */
|
|
static proto_item *
|
|
proto_tree_new_item(field_info *new_fi, proto_tree *tree, int hfindex,
|
|
tvbuff_t *tvb, gint start, gint length, gboolean little_endian)
|
|
{
|
|
proto_item *pi;
|
|
guint32 value, n;
|
|
float floatval;
|
|
double doubleval;
|
|
char *string;
|
|
GHashTable *hash;
|
|
GPtrArray *ptrs;
|
|
|
|
/* there is a possibility here that we might raise an exception
|
|
* and thus would lose track of the field_info.
|
|
* store it in a temp so that if we come here again we can reclaim
|
|
* the field_info without leaking memory.
|
|
*/
|
|
/* XXX this only keeps track of one field_info struct,
|
|
if we ever go multithreaded for calls to this function
|
|
we have to change this code to use per thread variable.
|
|
*/
|
|
if(field_info_tmp){
|
|
/* oops, last one we got must have been lost due
|
|
* to an exception.
|
|
* good thing we saved it, now we can reverse the
|
|
* memory leak and reclaim it.
|
|
*/
|
|
SLAB_FREE(field_info_tmp, field_info);
|
|
}
|
|
/* we might throw an exception, keep track of this one
|
|
* across the "dangerous" section below.
|
|
*/
|
|
field_info_tmp=new_fi;
|
|
|
|
switch(new_fi->hfinfo->type) {
|
|
case FT_NONE:
|
|
/* no value to set for FT_NONE */
|
|
break;
|
|
|
|
case FT_PROTOCOL:
|
|
proto_tree_set_protocol_tvb(new_fi, tvb);
|
|
break;
|
|
|
|
case FT_BYTES:
|
|
proto_tree_set_bytes_tvb(new_fi, tvb, start, length);
|
|
break;
|
|
|
|
case FT_UINT_BYTES:
|
|
n = get_uint_value(tvb, start, length, little_endian);
|
|
proto_tree_set_bytes_tvb(new_fi, tvb, start + length, n);
|
|
|
|
/* Instead of calling proto_item_set_len(), since we don't yet
|
|
* have a proto_item, we set the field_info's length ourselves. */
|
|
new_fi->length = n + length;
|
|
break;
|
|
|
|
case FT_BOOLEAN:
|
|
proto_tree_set_boolean(new_fi,
|
|
get_uint_value(tvb, start, length, little_endian));
|
|
break;
|
|
|
|
/* XXX - make these just FT_UINT? */
|
|
case FT_UINT8:
|
|
case FT_UINT16:
|
|
case FT_UINT24:
|
|
case FT_UINT32:
|
|
proto_tree_set_uint(new_fi,
|
|
get_uint_value(tvb, start, length, little_endian));
|
|
break;
|
|
|
|
case FT_INT64:
|
|
case FT_UINT64:
|
|
DISSECTOR_ASSERT( length <= 8 && length >= 1);
|
|
proto_tree_set_uint64_tvb(new_fi, tvb, start, length, little_endian);
|
|
break;
|
|
|
|
/* XXX - make these just FT_INT? */
|
|
case FT_INT8:
|
|
case FT_INT16:
|
|
case FT_INT24:
|
|
case FT_INT32:
|
|
proto_tree_set_int(new_fi,
|
|
get_int_value(tvb, start, length, little_endian));
|
|
break;
|
|
|
|
case FT_IPv4:
|
|
DISSECTOR_ASSERT(length == 4);
|
|
value = tvb_get_ipv4(tvb, start);
|
|
proto_tree_set_ipv4(new_fi, little_endian ? GUINT32_SWAP_LE_BE(value) : value);
|
|
break;
|
|
|
|
case FT_IPXNET:
|
|
DISSECTOR_ASSERT(length == 4);
|
|
proto_tree_set_ipxnet(new_fi,
|
|
get_uint_value(tvb, start, 4, FALSE));
|
|
break;
|
|
|
|
case FT_IPv6:
|
|
DISSECTOR_ASSERT(length == 16);
|
|
proto_tree_set_ipv6_tvb(new_fi, tvb, start);
|
|
break;
|
|
|
|
case FT_ETHER:
|
|
DISSECTOR_ASSERT(length == 6);
|
|
proto_tree_set_ether_tvb(new_fi, tvb, start);
|
|
break;
|
|
|
|
case FT_GUID:
|
|
DISSECTOR_ASSERT(length == 16);
|
|
proto_tree_set_guid_tvb(new_fi, tvb, start, little_endian);
|
|
break;
|
|
|
|
case FT_OID:
|
|
proto_tree_set_oid_tvb(new_fi, tvb, start, length);
|
|
break;
|
|
|
|
case FT_FLOAT:
|
|
DISSECTOR_ASSERT(length == 4);
|
|
if (little_endian)
|
|
floatval = tvb_get_letohieee_float(tvb, start);
|
|
else
|
|
floatval = tvb_get_ntohieee_float(tvb, start);
|
|
proto_tree_set_float(new_fi, floatval);
|
|
break;
|
|
|
|
case FT_DOUBLE:
|
|
DISSECTOR_ASSERT(length == 8);
|
|
if (little_endian)
|
|
doubleval = tvb_get_letohieee_double(tvb, start);
|
|
else
|
|
doubleval = tvb_get_ntohieee_double(tvb, start);
|
|
proto_tree_set_double(new_fi, doubleval);
|
|
break;
|
|
|
|
case FT_STRING:
|
|
proto_tree_set_string_tvb(new_fi, tvb, start, length);
|
|
break;
|
|
|
|
case FT_STRINGZ:
|
|
DISSECTOR_ASSERT(length >= -1);
|
|
/* Instead of calling proto_item_set_len(),
|
|
* since we don't yet have a proto_item, we
|
|
* set the field_info's length ourselves.
|
|
*
|
|
* XXX - our caller can't use that length to
|
|
* advance an offset unless they arrange that
|
|
* there always be a protocol tree into which
|
|
* we're putting this item.
|
|
*/
|
|
if (length == -1) {
|
|
/* This can throw an exception */
|
|
length = tvb_strsize(tvb, start);
|
|
|
|
string = ep_alloc(length);
|
|
|
|
tvb_memcpy(tvb, string, start, length);
|
|
} else if (length == 0) {
|
|
string = "[Empty]";
|
|
} else {
|
|
/* In this case, length signifies
|
|
* the length of the string.
|
|
*
|
|
* This could either be a null-padded
|
|
* string, which doesn't necessarily
|
|
* have a '\0' at the end, or a
|
|
* null-terminated string, with a
|
|
* trailing '\0'. (Yes, there are
|
|
* cases where you have a string
|
|
* that's both counted and null-
|
|
* terminated.)
|
|
*
|
|
* In the first case, we must
|
|
* allocate a buffer of length
|
|
* "length+1", to make room for
|
|
* a trailing '\0'.
|
|
*
|
|
* In the second case, we don't
|
|
* assume that there is a trailing
|
|
* '\0' there, as the packet might
|
|
* be malformed. (XXX - should we
|
|
* throw an exception if there's no
|
|
* trailing '\0'?) Therefore, we
|
|
* allocate a buffer of length
|
|
* "length+1", and put in a trailing
|
|
* '\0', just to be safe.
|
|
*
|
|
* (XXX - this would change if
|
|
* we made string values counted
|
|
* rather than null-terminated.)
|
|
*/
|
|
string = tvb_get_ephemeral_string(tvb,
|
|
start,
|
|
length);
|
|
}
|
|
new_fi->length = length;
|
|
proto_tree_set_string(new_fi, string);
|
|
break;
|
|
|
|
case FT_EBCDIC:
|
|
proto_tree_set_ebcdic_string_tvb(new_fi, tvb, start, length);
|
|
break;
|
|
|
|
case FT_UINT_STRING:
|
|
n = get_uint_value(tvb, start, length, little_endian);
|
|
proto_tree_set_string_tvb(new_fi, tvb, start + length, n);
|
|
|
|
/* Instead of calling proto_item_set_len(), since we
|
|
* don't yet have a proto_item, we set the
|
|
* field_info's length ourselves.
|
|
*
|
|
* XXX - our caller can't use that length to
|
|
* advance an offset unless they arrange that
|
|
* there always be a protocol tree into which
|
|
* we're putting this item.
|
|
*/
|
|
new_fi->length = n + length;
|
|
break;
|
|
|
|
default:
|
|
g_error("new_fi->hfinfo->type %d (%s) not handled\n",
|
|
new_fi->hfinfo->type,
|
|
ftype_name(new_fi->hfinfo->type));
|
|
DISSECTOR_ASSERT_NOT_REACHED();
|
|
break;
|
|
}
|
|
|
|
/* Don't add new node to proto_tree until now so that any exceptions
|
|
* raised by a tvbuff access method doesn't leave junk in the proto_tree. */
|
|
pi = proto_tree_add_node(tree, new_fi);
|
|
|
|
/* we did not raise an exception so we dont have to remember this
|
|
* field_info struct any more.
|
|
*/
|
|
field_info_tmp=NULL;
|
|
|
|
/* If the proto_tree wants to keep a record of this finfo
|
|
* for quick lookup, then record it. */
|
|
if (new_fi->hfinfo->ref_count) {
|
|
/*HERE*/
|
|
hash = PTREE_DATA(tree)->interesting_hfids;
|
|
ptrs = g_hash_table_lookup(hash, GINT_TO_POINTER(hfindex));
|
|
if (ptrs) {
|
|
g_ptr_array_add(ptrs, new_fi);
|
|
}
|
|
}
|
|
|
|
return pi;
|
|
}
|
|
|
|
/* Gets data from tvbuff, adds it to proto_tree, increments offset,
|
|
and returns proto_item* */
|
|
proto_item*
|
|
ptvcursor_add(ptvcursor_t *ptvc, int hfindex, gint length,
|
|
gboolean little_endian)
|
|
{
|
|
field_info *new_fi;
|
|
header_field_info *hfinfo;
|
|
gint item_length;
|
|
guint32 n;
|
|
int offset;
|
|
|
|
offset = ptvc->offset;
|
|
hfinfo = get_hfi_and_length(hfindex, ptvc->tvb, offset, &length,
|
|
&item_length);
|
|
ptvc->offset += length;
|
|
if (hfinfo->type == FT_UINT_BYTES || hfinfo->type == FT_UINT_STRING) {
|
|
/*
|
|
* The length of the rest of the item is in the first N
|
|
* bytes of the item.
|
|
*/
|
|
n = get_uint_value(ptvc->tvb, offset, length, little_endian);
|
|
ptvc->offset += n;
|
|
}
|
|
if (ptvc->tree == NULL)
|
|
return NULL;
|
|
|
|
TRY_TO_FAKE_THIS_ITEM(ptvc->tree, hfindex);
|
|
|
|
new_fi = new_field_info(ptvc->tree, hfinfo, ptvc->tvb, offset,
|
|
item_length);
|
|
if (new_fi == NULL)
|
|
return NULL;
|
|
|
|
return proto_tree_new_item(new_fi, ptvc->tree, hfindex, ptvc->tvb,
|
|
offset, length, little_endian);
|
|
}
|
|
|
|
/* Add an item to a proto_tree, using the text label registered to that item;
|
|
the item is extracted from the tvbuff handed to it. */
|
|
proto_item *
|
|
proto_tree_add_item(proto_tree *tree, int hfindex, tvbuff_t *tvb,
|
|
gint start, gint length, gboolean little_endian)
|
|
{
|
|
field_info *new_fi;
|
|
|
|
if (!tree)
|
|
return(NULL);
|
|
|
|
TRY_TO_FAKE_THIS_ITEM(tree, hfindex);
|
|
|
|
new_fi = alloc_field_info(tree, hfindex, tvb, start, &length);
|
|
|
|
if (new_fi == NULL)
|
|
return(NULL);
|
|
|
|
return proto_tree_new_item(new_fi, tree, hfindex, tvb, start,
|
|
length, little_endian);
|
|
}
|
|
|
|
/* Add a FT_NONE to a proto_tree */
|
|
proto_item *
|
|
proto_tree_add_none_format(proto_tree *tree, int hfindex, tvbuff_t *tvb, gint start,
|
|
gint length, const char *format, ...)
|
|
{
|
|
proto_item *pi;
|
|
va_list ap;
|
|
header_field_info *hfinfo;
|
|
|
|
if (!tree)
|
|
return (NULL);
|
|
|
|
PROTO_REGISTRAR_GET_NTH(hfindex, hfinfo);
|
|
DISSECTOR_ASSERT(hfinfo->type == FT_NONE);
|
|
|
|
pi = proto_tree_add_pi(tree, hfindex, tvb, start, &length, NULL);
|
|
|
|
va_start(ap, format);
|
|
proto_tree_set_representation(pi, format, ap);
|
|
va_end(ap);
|
|
|
|
/* no value to set for FT_NONE */
|
|
return pi;
|
|
}
|
|
|
|
/* Gets data from tvbuff, adds it to proto_tree, *DOES NOT* increment
|
|
* offset, and returns proto_item* */
|
|
proto_item*
|
|
ptvcursor_add_no_advance(ptvcursor_t* ptvc, int hf, gint length,
|
|
gboolean endianness)
|
|
{
|
|
proto_item *item;
|
|
|
|
item = proto_tree_add_item(ptvc->tree, hf, ptvc->tvb, ptvc->offset,
|
|
length, endianness);
|
|
|
|
return item;
|
|
}
|
|
|
|
/* Advance the ptvcursor's offset within its tvbuff without
|
|
* adding anything to the proto_tree. */
|
|
void
|
|
ptvcursor_advance(ptvcursor_t* ptvc, gint length)
|
|
{
|
|
ptvc->offset += length;
|
|
}
|
|
|
|
|
|
static void
|
|
proto_tree_set_protocol_tvb(field_info *fi, tvbuff_t *tvb)
|
|
{
|
|
fvalue_set(&fi->value, tvb, TRUE);
|
|
}
|
|
|
|
/* Add a FT_PROTOCOL to a proto_tree */
|
|
proto_item *
|
|
proto_tree_add_protocol_format(proto_tree *tree, int hfindex, tvbuff_t *tvb, gint start,
|
|
gint length, const char *format, ...)
|
|
{
|
|
proto_item *pi;
|
|
va_list ap;
|
|
header_field_info *hfinfo;
|
|
field_info *new_fi;
|
|
|
|
if (!tree)
|
|
return (NULL);
|
|
|
|
PROTO_REGISTRAR_GET_NTH(hfindex, hfinfo);
|
|
DISSECTOR_ASSERT(hfinfo->type == FT_PROTOCOL);
|
|
|
|
pi = proto_tree_add_pi(tree, hfindex, tvb, start, &length, &new_fi);
|
|
|
|
va_start(ap, format);
|
|
proto_tree_set_representation(pi, format, ap);
|
|
va_end(ap);
|
|
|
|
if (start == 0) {
|
|
proto_tree_set_protocol_tvb(new_fi, tvb);
|
|
}
|
|
else {
|
|
proto_tree_set_protocol_tvb(new_fi, NULL);
|
|
}
|
|
return pi;
|
|
}
|
|
|
|
|
|
/* Add a FT_BYTES to a proto_tree */
|
|
proto_item *
|
|
proto_tree_add_bytes(proto_tree *tree, int hfindex, tvbuff_t *tvb, gint start,
|
|
gint length, const guint8 *start_ptr)
|
|
{
|
|
proto_item *pi;
|
|
field_info *new_fi;
|
|
header_field_info *hfinfo;
|
|
|
|
if (!tree)
|
|
return (NULL);
|
|
|
|
TRY_TO_FAKE_THIS_ITEM(tree, hfindex);
|
|
|
|
PROTO_REGISTRAR_GET_NTH(hfindex, hfinfo);
|
|
DISSECTOR_ASSERT(hfinfo->type == FT_BYTES);
|
|
|
|
pi = proto_tree_add_pi(tree, hfindex, tvb, start, &length, &new_fi);
|
|
proto_tree_set_bytes(new_fi, start_ptr, length);
|
|
|
|
return pi;
|
|
}
|
|
|
|
proto_item *
|
|
proto_tree_add_bytes_format_value(proto_tree *tree, int hfindex, tvbuff_t *tvb,
|
|
gint start, gint length, const guint8 *start_ptr,
|
|
const char *format, ...)
|
|
{
|
|
proto_item *pi;
|
|
va_list ap;
|
|
|
|
pi = proto_tree_add_bytes(tree, hfindex, tvb, start, length, start_ptr);
|
|
if (pi == NULL)
|
|
return (NULL);
|
|
|
|
va_start(ap, format);
|
|
proto_tree_set_representation_value(pi, format, ap);
|
|
va_end(ap);
|
|
|
|
return pi;
|
|
}
|
|
|
|
proto_item *
|
|
proto_tree_add_bytes_format(proto_tree *tree, int hfindex, tvbuff_t *tvb, gint start,
|
|
gint length, const guint8 *start_ptr, const char *format, ...)
|
|
{
|
|
proto_item *pi;
|
|
va_list ap;
|
|
|
|
pi = proto_tree_add_bytes(tree, hfindex, tvb, start, length, start_ptr);
|
|
if (pi == NULL)
|
|
return (NULL);
|
|
|
|
va_start(ap, format);
|
|
proto_tree_set_representation(pi, format, ap);
|
|
va_end(ap);
|
|
|
|
return pi;
|
|
}
|
|
|
|
static void
|
|
proto_tree_set_bytes(field_info *fi, const guint8* start_ptr, gint length)
|
|
{
|
|
GByteArray *bytes;
|
|
|
|
bytes = g_byte_array_new();
|
|
if (length > 0) {
|
|
g_byte_array_append(bytes, start_ptr, length);
|
|
}
|
|
col_custom_set_fstr(fi->hfinfo, "%s", bytes_to_str(bytes->data,
|
|
length));
|
|
fvalue_set(&fi->value, bytes, TRUE);
|
|
}
|
|
|
|
|
|
static void
|
|
proto_tree_set_bytes_tvb(field_info *fi, tvbuff_t *tvb, gint offset, gint length)
|
|
{
|
|
proto_tree_set_bytes(fi, tvb_get_ptr(tvb, offset, length), length);
|
|
}
|
|
|
|
/* Add a FT_*TIME to a proto_tree */
|
|
proto_item *
|
|
proto_tree_add_time(proto_tree *tree, int hfindex, tvbuff_t *tvb, gint start, gint length,
|
|
nstime_t *value_ptr)
|
|
{
|
|
proto_item *pi;
|
|
field_info *new_fi;
|
|
header_field_info *hfinfo;
|
|
|
|
if (!tree)
|
|
return (NULL);
|
|
|
|
TRY_TO_FAKE_THIS_ITEM(tree, hfindex);
|
|
|
|
PROTO_REGISTRAR_GET_NTH(hfindex, hfinfo);
|
|
DISSECTOR_ASSERT(hfinfo->type == FT_ABSOLUTE_TIME ||
|
|
hfinfo->type == FT_RELATIVE_TIME);
|
|
|
|
pi = proto_tree_add_pi(tree, hfindex, tvb, start, &length, &new_fi);
|
|
proto_tree_set_time(new_fi, value_ptr);
|
|
|
|
return pi;
|
|
}
|
|
|
|
proto_item *
|
|
proto_tree_add_time_format_value(proto_tree *tree, int hfindex, tvbuff_t *tvb,
|
|
gint start, gint length, nstime_t *value_ptr,
|
|
const char *format, ...)
|
|
{
|
|
proto_item *pi;
|
|
va_list ap;
|
|
|
|
pi = proto_tree_add_time(tree, hfindex, tvb, start, length, value_ptr);
|
|
if (pi == NULL)
|
|
return (NULL);
|
|
|
|
va_start(ap, format);
|
|
proto_tree_set_representation_value(pi, format, ap);
|
|
va_end(ap);
|
|
|
|
return pi;
|
|
}
|
|
|
|
proto_item *
|
|
proto_tree_add_time_format(proto_tree *tree, int hfindex, tvbuff_t *tvb, gint start, gint length,
|
|
nstime_t *value_ptr, const char *format, ...)
|
|
{
|
|
proto_item *pi;
|
|
va_list ap;
|
|
|
|
pi = proto_tree_add_time(tree, hfindex, tvb, start, length, value_ptr);
|
|
if (pi == NULL)
|
|
return (NULL);
|
|
|
|
va_start(ap, format);
|
|
proto_tree_set_representation(pi, format, ap);
|
|
va_end(ap);
|
|
|
|
return pi;
|
|
}
|
|
|
|
/* Set the FT_*TIME value */
|
|
static void
|
|
proto_tree_set_time(field_info *fi, nstime_t *value_ptr)
|
|
{
|
|
header_field_info *hfinfo;
|
|
|
|
DISSECTOR_ASSERT(value_ptr != NULL);
|
|
hfinfo = fi->hfinfo;
|
|
|
|
if (hfinfo->type == FT_ABSOLUTE_TIME) {
|
|
col_custom_set_fstr(fi->hfinfo, "%s", abs_time_to_str(value_ptr));
|
|
} else if (hfinfo->type == FT_RELATIVE_TIME) {
|
|
col_custom_set_fstr(fi->hfinfo, "%s", rel_time_to_secs_str(value_ptr));
|
|
}
|
|
fvalue_set(&fi->value, value_ptr, FALSE);
|
|
}
|
|
|
|
/* Add a FT_IPXNET to a proto_tree */
|
|
proto_item *
|
|
proto_tree_add_ipxnet(proto_tree *tree, int hfindex, tvbuff_t *tvb, gint start, gint length,
|
|
guint32 value)
|
|
{
|
|
proto_item *pi;
|
|
field_info *new_fi;
|
|
header_field_info *hfinfo;
|
|
|
|
if (!tree)
|
|
return (NULL);
|
|
|
|
TRY_TO_FAKE_THIS_ITEM(tree, hfindex);
|
|
|
|
PROTO_REGISTRAR_GET_NTH(hfindex, hfinfo);
|
|
DISSECTOR_ASSERT(hfinfo->type == FT_IPXNET);
|
|
|
|
pi = proto_tree_add_pi(tree, hfindex, tvb, start, &length, &new_fi);
|
|
proto_tree_set_ipxnet(new_fi, value);
|
|
|
|
return pi;
|
|
}
|
|
|
|
proto_item *
|
|
proto_tree_add_ipxnet_format_value(proto_tree *tree, int hfindex, tvbuff_t *tvb,
|
|
gint start, gint length, guint32 value, const char *format, ...)
|
|
{
|
|
proto_item *pi;
|
|
va_list ap;
|
|
|
|
pi = proto_tree_add_ipxnet(tree, hfindex, tvb, start, length, value);
|
|
if (pi == NULL)
|
|
return (NULL);
|
|
|
|
va_start(ap, format);
|
|
proto_tree_set_representation_value(pi, format, ap);
|
|
va_end(ap);
|
|
|
|
return pi;
|
|
}
|
|
|
|
proto_item *
|
|
proto_tree_add_ipxnet_format(proto_tree *tree, int hfindex, tvbuff_t *tvb, gint start, gint length,
|
|
guint32 value, const char *format, ...)
|
|
{
|
|
proto_item *pi;
|
|
va_list ap;
|
|
|
|
pi = proto_tree_add_ipxnet(tree, hfindex, tvb, start, length, value);
|
|
if (pi == NULL)
|
|
return (NULL);
|
|
|
|
va_start(ap, format);
|
|
proto_tree_set_representation(pi, format, ap);
|
|
va_end(ap);
|
|
|
|
return pi;
|
|
}
|
|
|
|
/* Set the FT_IPXNET value */
|
|
static void
|
|
proto_tree_set_ipxnet(field_info *fi, guint32 value)
|
|
{
|
|
fvalue_set_uinteger(&fi->value, value);
|
|
}
|
|
|
|
/* Add a FT_IPv4 to a proto_tree */
|
|
proto_item *
|
|
proto_tree_add_ipv4(proto_tree *tree, int hfindex, tvbuff_t *tvb, gint start, gint length,
|
|
guint32 value)
|
|
{
|
|
proto_item *pi;
|
|
field_info *new_fi;
|
|
header_field_info *hfinfo;
|
|
|
|
if (!tree)
|
|
return (NULL);
|
|
|
|
TRY_TO_FAKE_THIS_ITEM(tree, hfindex);
|
|
|
|
PROTO_REGISTRAR_GET_NTH(hfindex, hfinfo);
|
|
DISSECTOR_ASSERT(hfinfo->type == FT_IPv4);
|
|
|
|
pi = proto_tree_add_pi(tree, hfindex, tvb, start, &length, &new_fi);
|
|
proto_tree_set_ipv4(new_fi, value);
|
|
|
|
return pi;
|
|
}
|
|
|
|
proto_item *
|
|
proto_tree_add_ipv4_format_value(proto_tree *tree, int hfindex, tvbuff_t *tvb,
|
|
gint start, gint length, guint32 value, const char *format, ...)
|
|
{
|
|
proto_item *pi;
|
|
va_list ap;
|
|
|
|
pi = proto_tree_add_ipv4(tree, hfindex, tvb, start, length, value);
|
|
if (pi == NULL)
|
|
return (NULL);
|
|
|
|
va_start(ap, format);
|
|
proto_tree_set_representation_value(pi, format, ap);
|
|
va_end(ap);
|
|
|
|
return pi;
|
|
}
|
|
|
|
proto_item *
|
|
proto_tree_add_ipv4_format(proto_tree *tree, int hfindex, tvbuff_t *tvb, gint start, gint length,
|
|
guint32 value, const char *format, ...)
|
|
{
|
|
proto_item *pi;
|
|
va_list ap;
|
|
|
|
pi = proto_tree_add_ipv4(tree, hfindex, tvb, start, length, value);
|
|
if (pi == NULL)
|
|
return (NULL);
|
|
|
|
va_start(ap, format);
|
|
proto_tree_set_representation(pi, format, ap);
|
|
va_end(ap);
|
|
|
|
return pi;
|
|
}
|
|
|
|
/* Set the FT_IPv4 value */
|
|
static void
|
|
proto_tree_set_ipv4(field_info *fi, guint32 value)
|
|
{
|
|
col_custom_set_fstr(fi->hfinfo, "%s",
|
|
ip_to_str((guint8 *)&value));
|
|
fvalue_set_uinteger(&fi->value, value);
|
|
}
|
|
|
|
/* Add a FT_IPv6 to a proto_tree */
|
|
proto_item *
|
|
proto_tree_add_ipv6(proto_tree *tree, int hfindex, tvbuff_t *tvb, gint start, gint length,
|
|
const guint8* value_ptr)
|
|
{
|
|
proto_item *pi;
|
|
field_info *new_fi;
|
|
header_field_info *hfinfo;
|
|
|
|
if (!tree)
|
|
return (NULL);
|
|
|
|
TRY_TO_FAKE_THIS_ITEM(tree, hfindex);
|
|
|
|
PROTO_REGISTRAR_GET_NTH(hfindex, hfinfo);
|
|
DISSECTOR_ASSERT(hfinfo->type == FT_IPv6);
|
|
|
|
pi = proto_tree_add_pi(tree, hfindex, tvb, start, &length, &new_fi);
|
|
proto_tree_set_ipv6(new_fi, value_ptr);
|
|
|
|
return pi;
|
|
}
|
|
|
|
proto_item *
|
|
proto_tree_add_ipv6_format_value(proto_tree *tree, int hfindex, tvbuff_t *tvb,
|
|
gint start, gint length, const guint8* value_ptr,
|
|
const char *format, ...)
|
|
{
|
|
proto_item *pi;
|
|
va_list ap;
|
|
|
|
pi = proto_tree_add_ipv6(tree, hfindex, tvb, start, length, value_ptr);
|
|
if (pi == NULL)
|
|
return (NULL);
|
|
|
|
va_start(ap, format);
|
|
proto_tree_set_representation_value(pi, format, ap);
|
|
va_end(ap);
|
|
|
|
return pi;
|
|
}
|
|
|
|
proto_item *
|
|
proto_tree_add_ipv6_format(proto_tree *tree, int hfindex, tvbuff_t *tvb, gint start, gint length,
|
|
const guint8* value_ptr, const char *format, ...)
|
|
{
|
|
proto_item *pi;
|
|
va_list ap;
|
|
|
|
pi = proto_tree_add_ipv6(tree, hfindex, tvb, start, length, value_ptr);
|
|
if (pi == NULL)
|
|
return (NULL);
|
|
|
|
va_start(ap, format);
|
|
proto_tree_set_representation(pi, format, ap);
|
|
va_end(ap);
|
|
|
|
return pi;
|
|
}
|
|
|
|
/* Set the FT_IPv6 value */
|
|
static void
|
|
proto_tree_set_ipv6(field_info *fi, const guint8* value_ptr)
|
|
{
|
|
DISSECTOR_ASSERT(value_ptr != NULL);
|
|
fvalue_set(&fi->value, (gpointer) value_ptr, FALSE);
|
|
}
|
|
|
|
static void
|
|
proto_tree_set_ipv6_tvb(field_info *fi, tvbuff_t *tvb, gint start)
|
|
{
|
|
proto_tree_set_ipv6(fi, tvb_get_ptr(tvb, start, 16));
|
|
}
|
|
|
|
/* Add a FT_GUID to a proto_tree */
|
|
proto_item *
|
|
proto_tree_add_guid(proto_tree *tree, int hfindex, tvbuff_t *tvb, gint start, gint length,
|
|
const e_guid_t *value_ptr)
|
|
{
|
|
proto_item *pi;
|
|
field_info *new_fi;
|
|
header_field_info *hfinfo;
|
|
|
|
if (!tree)
|
|
return (NULL);
|
|
|
|
TRY_TO_FAKE_THIS_ITEM(tree, hfindex);
|
|
|
|
PROTO_REGISTRAR_GET_NTH(hfindex, hfinfo);
|
|
DISSECTOR_ASSERT(hfinfo->type == FT_GUID);
|
|
|
|
pi = proto_tree_add_pi(tree, hfindex, tvb, start, &length, &new_fi);
|
|
proto_tree_set_guid(new_fi, value_ptr);
|
|
|
|
return pi;
|
|
}
|
|
|
|
proto_item *
|
|
proto_tree_add_guid_format_value(proto_tree *tree, int hfindex, tvbuff_t *tvb,
|
|
gint start, gint length, const e_guid_t *value_ptr,
|
|
const char *format, ...)
|
|
{
|
|
proto_item *pi;
|
|
va_list ap;
|
|
|
|
pi = proto_tree_add_guid(tree, hfindex, tvb, start, length, value_ptr);
|
|
if (pi == NULL)
|
|
return (NULL);
|
|
|
|
va_start(ap, format);
|
|
proto_tree_set_representation_value(pi, format, ap);
|
|
va_end(ap);
|
|
|
|
return pi;
|
|
}
|
|
|
|
proto_item *
|
|
proto_tree_add_guid_format(proto_tree *tree, int hfindex, tvbuff_t *tvb, gint start, gint length,
|
|
const e_guid_t *value_ptr, const char *format, ...)
|
|
{
|
|
proto_item *pi;
|
|
va_list ap;
|
|
|
|
pi = proto_tree_add_guid(tree, hfindex, tvb, start, length, value_ptr);
|
|
if (pi == NULL)
|
|
return (NULL);
|
|
|
|
va_start(ap, format);
|
|
proto_tree_set_representation(pi, format, ap);
|
|
va_end(ap);
|
|
|
|
return pi;
|
|
}
|
|
|
|
/* Set the FT_GUID value */
|
|
static void
|
|
proto_tree_set_guid(field_info *fi, const e_guid_t *value_ptr)
|
|
{
|
|
DISSECTOR_ASSERT(value_ptr != NULL);
|
|
col_custom_set_fstr(fi->hfinfo, "%s",
|
|
guid_to_str(value_ptr));
|
|
fvalue_set(&fi->value, (gpointer) value_ptr, FALSE);
|
|
}
|
|
|
|
static void
|
|
proto_tree_set_guid_tvb(field_info *fi, tvbuff_t *tvb, gint start, gboolean little_endian)
|
|
{
|
|
e_guid_t guid;
|
|
|
|
tvb_get_guid(tvb, start, &guid, little_endian);
|
|
proto_tree_set_guid(fi, &guid);
|
|
}
|
|
|
|
/* Add a FT_OID to a proto_tree */
|
|
proto_item *
|
|
proto_tree_add_oid(proto_tree *tree, int hfindex, tvbuff_t *tvb, gint start, gint length,
|
|
const guint8* value_ptr)
|
|
{
|
|
proto_item *pi;
|
|
field_info *new_fi;
|
|
header_field_info *hfinfo;
|
|
|
|
if (!tree)
|
|
return (NULL);
|
|
|
|
TRY_TO_FAKE_THIS_ITEM(tree, hfindex);
|
|
|
|
PROTO_REGISTRAR_GET_NTH(hfindex, hfinfo);
|
|
DISSECTOR_ASSERT(hfinfo->type == FT_OID);
|
|
|
|
pi = proto_tree_add_pi(tree, hfindex, tvb, start, &length, &new_fi);
|
|
proto_tree_set_oid(new_fi, value_ptr, length);
|
|
|
|
return pi;
|
|
}
|
|
|
|
proto_item *
|
|
proto_tree_add_oid_format_value(proto_tree *tree, int hfindex, tvbuff_t *tvb,
|
|
gint start, gint length, const guint8* value_ptr,
|
|
const char *format, ...)
|
|
{
|
|
proto_item *pi;
|
|
va_list ap;
|
|
|
|
pi = proto_tree_add_oid(tree, hfindex, tvb, start, length, value_ptr);
|
|
if (pi == NULL)
|
|
return (NULL);
|
|
|
|
va_start(ap, format);
|
|
proto_tree_set_representation_value(pi, format, ap);
|
|
va_end(ap);
|
|
|
|
return pi;
|
|
}
|
|
|
|
proto_item *
|
|
proto_tree_add_oid_format(proto_tree *tree, int hfindex, tvbuff_t *tvb, gint start, gint length,
|
|
const guint8* value_ptr, const char *format, ...)
|
|
{
|
|
proto_item *pi;
|
|
va_list ap;
|
|
|
|
pi = proto_tree_add_oid(tree, hfindex, tvb, start, length, value_ptr);
|
|
if (pi == NULL)
|
|
return (NULL);
|
|
|
|
va_start(ap, format);
|
|
proto_tree_set_representation(pi, format, ap);
|
|
va_end(ap);
|
|
|
|
return pi;
|
|
}
|
|
|
|
/* Set the FT_OID value */
|
|
static void
|
|
proto_tree_set_oid(field_info *fi, const guint8* value_ptr, gint length)
|
|
{
|
|
GByteArray *bytes;
|
|
|
|
DISSECTOR_ASSERT(value_ptr != NULL);
|
|
|
|
bytes = g_byte_array_new();
|
|
if (length > 0) {
|
|
g_byte_array_append(bytes, value_ptr, length);
|
|
}
|
|
col_custom_set_fstr(fi->hfinfo, "%s",
|
|
oid_resolved_from_encoded(value_ptr, length));
|
|
fvalue_set(&fi->value, bytes, TRUE);
|
|
}
|
|
|
|
static void
|
|
proto_tree_set_oid_tvb(field_info *fi, tvbuff_t *tvb, gint start, gint length)
|
|
{
|
|
proto_tree_set_oid(fi, tvb_get_ptr(tvb, start, length), length);
|
|
}
|
|
|
|
static void
|
|
proto_tree_set_uint64(field_info *fi, guint64 value)
|
|
{
|
|
col_custom_set_fstr(fi->hfinfo, "%" G_GINT64_MODIFIER "u",
|
|
value);
|
|
fvalue_set_integer64(&fi->value, value);
|
|
}
|
|
|
|
static void
|
|
proto_tree_set_uint64_tvb(field_info *fi, tvbuff_t *tvb, gint start, guint length, gboolean little_endian)
|
|
{
|
|
guint64 value = 0;
|
|
guint8* b = ep_tvb_memdup(tvb,start,length);
|
|
|
|
if(little_endian) {
|
|
b += length;
|
|
switch(length) {
|
|
default: DISSECTOR_ASSERT_NOT_REACHED();
|
|
case 8: value <<= 8; value += *--b;
|
|
case 7: value <<= 8; value += *--b;
|
|
case 6: value <<= 8; value += *--b;
|
|
case 5: value <<= 8; value += *--b;
|
|
case 4: value <<= 8; value += *--b;
|
|
case 3: value <<= 8; value += *--b;
|
|
case 2: value <<= 8; value += *--b;
|
|
case 1: value <<= 8; value += *--b;
|
|
break;
|
|
}
|
|
} else {
|
|
switch(length) {
|
|
default: DISSECTOR_ASSERT_NOT_REACHED();
|
|
case 8: value <<= 8; value += *b++;
|
|
case 7: value <<= 8; value += *b++;
|
|
case 6: value <<= 8; value += *b++;
|
|
case 5: value <<= 8; value += *b++;
|
|
case 4: value <<= 8; value += *b++;
|
|
case 3: value <<= 8; value += *b++;
|
|
case 2: value <<= 8; value += *b++;
|
|
case 1: value <<= 8; value += *b++;
|
|
break;
|
|
}
|
|
}
|
|
|
|
proto_tree_set_uint64(fi, value);
|
|
}
|
|
|
|
/* Add a FT_STRING or FT_STRINGZ to a proto_tree. Creates own copy of string,
|
|
* and frees it when the proto_tree is destroyed. */
|
|
proto_item *
|
|
proto_tree_add_string(proto_tree *tree, int hfindex, tvbuff_t *tvb, gint start,
|
|
gint length, const char* value)
|
|
{
|
|
proto_item *pi;
|
|
field_info *new_fi;
|
|
header_field_info *hfinfo;
|
|
|
|
if (!tree)
|
|
return (NULL);
|
|
|
|
TRY_TO_FAKE_THIS_ITEM(tree, hfindex);
|
|
|
|
PROTO_REGISTRAR_GET_NTH(hfindex, hfinfo);
|
|
DISSECTOR_ASSERT(hfinfo->type == FT_STRING || hfinfo->type == FT_STRINGZ);
|
|
|
|
pi = proto_tree_add_pi(tree, hfindex, tvb, start, &length, &new_fi);
|
|
DISSECTOR_ASSERT(length >= 0);
|
|
proto_tree_set_string(new_fi, value);
|
|
|
|
return pi;
|
|
}
|
|
|
|
proto_item *
|
|
proto_tree_add_string_format_value(proto_tree *tree, int hfindex, tvbuff_t *tvb,
|
|
gint start, gint length, const char* value, const char *format,
|
|
...)
|
|
{
|
|
proto_item *pi;
|
|
va_list ap;
|
|
|
|
pi = proto_tree_add_string(tree, hfindex, tvb, start, length, value);
|
|
if (pi == NULL)
|
|
return (NULL);
|
|
|
|
va_start(ap, format);
|
|
proto_tree_set_representation_value(pi, format, ap);
|
|
va_end(ap);
|
|
|
|
return pi;
|
|
}
|
|
|
|
proto_item *
|
|
proto_tree_add_string_format(proto_tree *tree, int hfindex, tvbuff_t *tvb, gint start,
|
|
gint length, const char* value, const char *format, ...)
|
|
{
|
|
proto_item *pi;
|
|
va_list ap;
|
|
|
|
pi = proto_tree_add_string(tree, hfindex, tvb, start, length, value);
|
|
if (pi == NULL)
|
|
return (NULL);
|
|
|
|
va_start(ap, format);
|
|
proto_tree_set_representation(pi, format, ap);
|
|
va_end(ap);
|
|
|
|
return pi;
|
|
}
|
|
|
|
/* Appends string data to a FT_STRING or FT_STRINGZ, allowing progressive
|
|
* field info update instead of only updating the representation as does
|
|
* proto_item_append_text()
|
|
*/
|
|
/* NOTE: this function will break with the TRY_TO_FAKE_THIS_ITEM()
|
|
* speed optimization.
|
|
* Currently only WSP use this function so it is not that bad but try to
|
|
* avoid using this one if possible.
|
|
* IF you must use this function you MUST also disable the
|
|
* TRY_TO_FAKE_THIS_ITEM() optimization for your dissector/function
|
|
* using proto_item_append_string().
|
|
* Do that by faking that the tree is visible by calling
|
|
* proto_tree_set_visible(tree, TRUE) (see packet-wsp.c)
|
|
* BEFORE you create the item you are later going to use
|
|
* proto_item_append_string() on.
|
|
*/
|
|
void
|
|
proto_item_append_string(proto_item *pi, const char *str)
|
|
{
|
|
field_info *fi;
|
|
header_field_info *hfinfo;
|
|
gchar *old_str, *new_str;
|
|
|
|
if (!pi)
|
|
return;
|
|
if (!*str)
|
|
return;
|
|
|
|
fi = PITEM_FINFO(pi);
|
|
hfinfo = fi->hfinfo;
|
|
if (hfinfo->type == FT_PROTOCOL) {
|
|
/* TRY_TO_FAKE_THIS_ITEM() speed optimization: silently skip */
|
|
return;
|
|
}
|
|
DISSECTOR_ASSERT(hfinfo->type == FT_STRING || hfinfo->type == FT_STRINGZ);
|
|
old_str = fvalue_get(&fi->value);
|
|
new_str = ep_strdup_printf("%s%s", old_str, str);
|
|
fvalue_set(&fi->value, new_str, FALSE);
|
|
}
|
|
|
|
/* Set the FT_STRING value */
|
|
static void
|
|
proto_tree_set_string(field_info *fi, const char* value)
|
|
{
|
|
if (value) {
|
|
col_custom_set_fstr(fi->hfinfo, "%s",
|
|
format_text(value, strlen(value)));
|
|
fvalue_set(&fi->value, (gpointer) value, FALSE);
|
|
} else {
|
|
col_custom_set_fstr(fi->hfinfo, "[ Null ]");
|
|
fvalue_set(&fi->value, (gpointer) "[ Null ]", FALSE);
|
|
}
|
|
}
|
|
|
|
static void
|
|
proto_tree_set_string_tvb(field_info *fi, tvbuff_t *tvb, gint start, gint length)
|
|
{
|
|
gchar *string;
|
|
|
|
if (length == -1) {
|
|
length = tvb_ensure_length_remaining(tvb, start);
|
|
}
|
|
|
|
string = tvb_get_ephemeral_string(tvb, start, length);
|
|
proto_tree_set_string(fi, string);
|
|
}
|
|
|
|
static void
|
|
proto_tree_set_ebcdic_string_tvb(field_info *fi, tvbuff_t *tvb, gint start, gint length)
|
|
{
|
|
gchar *string;
|
|
|
|
if (length == -1) {
|
|
length = tvb_ensure_length_remaining(tvb, start);
|
|
}
|
|
|
|
string = tvb_get_ephemeral_string(tvb, start, length);
|
|
EBCDIC_to_ASCII(string, length);
|
|
proto_tree_set_string(fi, string);
|
|
}
|
|
|
|
/* Add a FT_ETHER to a proto_tree */
|
|
proto_item *
|
|
proto_tree_add_ether(proto_tree *tree, int hfindex, tvbuff_t *tvb, gint start, gint length,
|
|
const guint8* value)
|
|
{
|
|
proto_item *pi;
|
|
field_info *new_fi;
|
|
header_field_info *hfinfo;
|
|
|
|
if (!tree)
|
|
return (NULL);
|
|
|
|
TRY_TO_FAKE_THIS_ITEM(tree, hfindex);
|
|
|
|
PROTO_REGISTRAR_GET_NTH(hfindex, hfinfo);
|
|
DISSECTOR_ASSERT(hfinfo->type == FT_ETHER);
|
|
|
|
pi = proto_tree_add_pi(tree, hfindex, tvb, start, &length, &new_fi);
|
|
proto_tree_set_ether(new_fi, value);
|
|
|
|
return pi;
|
|
}
|
|
|
|
proto_item *
|
|
proto_tree_add_ether_format_value(proto_tree *tree, int hfindex, tvbuff_t *tvb,
|
|
gint start, gint length, const guint8* value,
|
|
const char *format, ...)
|
|
{
|
|
proto_item *pi;
|
|
va_list ap;
|
|
|
|
pi = proto_tree_add_ether(tree, hfindex, tvb, start, length, value);
|
|
if (pi == NULL)
|
|
return (NULL);
|
|
|
|
va_start(ap, format);
|
|
proto_tree_set_representation_value(pi, format, ap);
|
|
va_end(ap);
|
|
|
|
return pi;
|
|
}
|
|
|
|
proto_item *
|
|
proto_tree_add_ether_format(proto_tree *tree, int hfindex, tvbuff_t *tvb, gint start, gint length,
|
|
const guint8* value, const char *format, ...)
|
|
{
|
|
proto_item *pi;
|
|
va_list ap;
|
|
|
|
pi = proto_tree_add_ether(tree, hfindex, tvb, start, length, value);
|
|
if (pi == NULL)
|
|
return (NULL);
|
|
|
|
va_start(ap, format);
|
|
proto_tree_set_representation(pi, format, ap);
|
|
va_end(ap);
|
|
|
|
return pi;
|
|
}
|
|
|
|
/* Set the FT_ETHER value */
|
|
static void
|
|
proto_tree_set_ether(field_info *fi, const guint8* value)
|
|
{
|
|
col_custom_set_fstr(fi->hfinfo, "%s", bytes_to_str_punct(value, 6, ':'));
|
|
fvalue_set(&fi->value, (gpointer) value, FALSE);
|
|
}
|
|
|
|
static void
|
|
proto_tree_set_ether_tvb(field_info *fi, tvbuff_t *tvb, gint start)
|
|
{
|
|
proto_tree_set_ether(fi, tvb_get_ptr(tvb, start, 6));
|
|
}
|
|
|
|
/* Add a FT_BOOLEAN to a proto_tree */
|
|
proto_item *
|
|
proto_tree_add_boolean(proto_tree *tree, int hfindex, tvbuff_t *tvb, gint start, gint length,
|
|
guint32 value)
|
|
{
|
|
proto_item *pi;
|
|
field_info *new_fi;
|
|
header_field_info *hfinfo;
|
|
|
|
if (!tree)
|
|
return (NULL);
|
|
|
|
TRY_TO_FAKE_THIS_ITEM(tree, hfindex);
|
|
|
|
PROTO_REGISTRAR_GET_NTH(hfindex, hfinfo);
|
|
DISSECTOR_ASSERT(hfinfo->type == FT_BOOLEAN);
|
|
|
|
pi = proto_tree_add_pi(tree, hfindex, tvb, start, &length, &new_fi);
|
|
proto_tree_set_boolean(new_fi, value);
|
|
|
|
return pi;
|
|
}
|
|
|
|
proto_item *
|
|
proto_tree_add_boolean_format_value(proto_tree *tree, int hfindex,
|
|
tvbuff_t *tvb, gint start, gint length, guint32 value,
|
|
const char *format, ...)
|
|
{
|
|
proto_item *pi;
|
|
va_list ap;
|
|
|
|
pi = proto_tree_add_boolean(tree, hfindex, tvb, start, length, value);
|
|
if (pi == NULL)
|
|
return (NULL);
|
|
|
|
va_start(ap, format);
|
|
proto_tree_set_representation_value(pi, format, ap);
|
|
va_end(ap);
|
|
|
|
return pi;
|
|
}
|
|
|
|
proto_item *
|
|
proto_tree_add_boolean_format(proto_tree *tree, int hfindex, tvbuff_t *tvb, gint start, gint length,
|
|
guint32 value, const char *format, ...)
|
|
{
|
|
proto_item *pi;
|
|
va_list ap;
|
|
|
|
pi = proto_tree_add_boolean(tree, hfindex, tvb, start, length, value);
|
|
if (pi == NULL)
|
|
return (NULL);
|
|
|
|
va_start(ap, format);
|
|
proto_tree_set_representation(pi, format, ap);
|
|
va_end(ap);
|
|
|
|
return pi;
|
|
}
|
|
|
|
/* Set the FT_BOOLEAN value */
|
|
static void
|
|
proto_tree_set_boolean(field_info *fi, guint32 value)
|
|
{
|
|
proto_tree_set_uint(fi, value);
|
|
}
|
|
|
|
/* Add a FT_FLOAT to a proto_tree */
|
|
proto_item *
|
|
proto_tree_add_float(proto_tree *tree, int hfindex, tvbuff_t *tvb, gint start, gint length,
|
|
float value)
|
|
{
|
|
proto_item *pi;
|
|
field_info *new_fi;
|
|
header_field_info *hfinfo;
|
|
|
|
if (!tree)
|
|
return (NULL);
|
|
|
|
TRY_TO_FAKE_THIS_ITEM(tree, hfindex);
|
|
|
|
PROTO_REGISTRAR_GET_NTH(hfindex, hfinfo);
|
|
DISSECTOR_ASSERT(hfinfo->type == FT_FLOAT);
|
|
|
|
pi = proto_tree_add_pi(tree, hfindex, tvb, start, &length, &new_fi);
|
|
proto_tree_set_float(new_fi, value);
|
|
|
|
return pi;
|
|
}
|
|
|
|
proto_item *
|
|
proto_tree_add_float_format_value(proto_tree *tree, int hfindex, tvbuff_t *tvb,
|
|
gint start, gint length, float value, const char *format, ...)
|
|
{
|
|
proto_item *pi;
|
|
va_list ap;
|
|
|
|
pi = proto_tree_add_float(tree, hfindex, tvb, start, length, value);
|
|
if (pi == NULL)
|
|
return (NULL);
|
|
|
|
va_start(ap, format);
|
|
proto_tree_set_representation_value(pi, format, ap);
|
|
va_end(ap);
|
|
|
|
return pi;
|
|
}
|
|
|
|
proto_item *
|
|
proto_tree_add_float_format(proto_tree *tree, int hfindex, tvbuff_t *tvb, gint start, gint length,
|
|
float value, const char *format, ...)
|
|
{
|
|
proto_item *pi;
|
|
va_list ap;
|
|
|
|
pi = proto_tree_add_float(tree, hfindex, tvb, start, length, value);
|
|
if (pi == NULL)
|
|
return (NULL);
|
|
|
|
va_start(ap, format);
|
|
proto_tree_set_representation(pi, format, ap);
|
|
va_end(ap);
|
|
|
|
return pi;
|
|
}
|
|
|
|
/* Set the FT_FLOAT value */
|
|
static void
|
|
proto_tree_set_float(field_info *fi, float value)
|
|
{
|
|
col_custom_set_fstr(fi->hfinfo, "%." STRINGIFY(FLT_DIG) "f",
|
|
value);
|
|
fvalue_set_floating(&fi->value, value);
|
|
}
|
|
|
|
/* Add a FT_DOUBLE to a proto_tree */
|
|
proto_item *
|
|
proto_tree_add_double(proto_tree *tree, int hfindex, tvbuff_t *tvb, gint start, gint length,
|
|
double value)
|
|
{
|
|
proto_item *pi;
|
|
field_info *new_fi;
|
|
header_field_info *hfinfo;
|
|
|
|
if (!tree)
|
|
return (NULL);
|
|
|
|
TRY_TO_FAKE_THIS_ITEM(tree, hfindex);
|
|
|
|
PROTO_REGISTRAR_GET_NTH(hfindex, hfinfo);
|
|
DISSECTOR_ASSERT(hfinfo->type == FT_DOUBLE);
|
|
|
|
pi = proto_tree_add_pi(tree, hfindex, tvb, start, &length, &new_fi);
|
|
proto_tree_set_double(new_fi, value);
|
|
|
|
return pi;
|
|
}
|
|
|
|
proto_item *
|
|
proto_tree_add_double_format_value(proto_tree *tree, int hfindex, tvbuff_t *tvb,
|
|
gint start, gint length, double value, const char *format, ...)
|
|
{
|
|
proto_item *pi;
|
|
va_list ap;
|
|
|
|
pi = proto_tree_add_double(tree, hfindex, tvb, start, length, value);
|
|
if (pi == NULL)
|
|
return (NULL);
|
|
|
|
va_start(ap, format);
|
|
proto_tree_set_representation_value(pi, format, ap);
|
|
va_end(ap);
|
|
|
|
return pi;
|
|
}
|
|
|
|
proto_item *
|
|
proto_tree_add_double_format(proto_tree *tree, int hfindex, tvbuff_t *tvb, gint start, gint length,
|
|
double value, const char *format, ...)
|
|
{
|
|
proto_item *pi;
|
|
va_list ap;
|
|
|
|
pi = proto_tree_add_double(tree, hfindex, tvb, start, length, value);
|
|
if (pi == NULL)
|
|
return (NULL);
|
|
|
|
va_start(ap, format);
|
|
proto_tree_set_representation(pi, format, ap);
|
|
va_end(ap);
|
|
|
|
return pi;
|
|
}
|
|
|
|
/* Set the FT_DOUBLE value */
|
|
static void
|
|
proto_tree_set_double(field_info *fi, double value)
|
|
{
|
|
col_custom_set_fstr(fi->hfinfo, "%." STRINGIFY(DBL_DIG) "g",
|
|
value);
|
|
fvalue_set_floating(&fi->value, value);
|
|
}
|
|
|
|
/* Add FT_UINT{8,16,24,32} to a proto_tree */
|
|
proto_item *
|
|
proto_tree_add_uint(proto_tree *tree, int hfindex, tvbuff_t *tvb, gint start, gint length,
|
|
guint32 value)
|
|
{
|
|
proto_item *pi = NULL;
|
|
field_info *new_fi;
|
|
header_field_info *hfinfo;
|
|
|
|
if (!tree)
|
|
return (NULL);
|
|
|
|
TRY_TO_FAKE_THIS_ITEM(tree, hfindex);
|
|
|
|
PROTO_REGISTRAR_GET_NTH(hfindex, hfinfo);
|
|
switch(hfinfo->type) {
|
|
case FT_UINT8:
|
|
case FT_UINT16:
|
|
case FT_UINT24:
|
|
case FT_UINT32:
|
|
case FT_FRAMENUM:
|
|
pi = proto_tree_add_pi(tree, hfindex, tvb, start, &length,
|
|
&new_fi);
|
|
proto_tree_set_uint(new_fi, value);
|
|
break;
|
|
|
|
default:
|
|
DISSECTOR_ASSERT_NOT_REACHED();
|
|
}
|
|
|
|
return pi;
|
|
}
|
|
|
|
proto_item *
|
|
proto_tree_add_uint_format_value(proto_tree *tree, int hfindex, tvbuff_t *tvb,
|
|
gint start, gint length, guint32 value, const char *format, ...)
|
|
{
|
|
proto_item *pi;
|
|
va_list ap;
|
|
|
|
pi = proto_tree_add_uint(tree, hfindex, tvb, start, length, value);
|
|
if (pi == NULL)
|
|
return (NULL);
|
|
|
|
va_start(ap, format);
|
|
proto_tree_set_representation_value(pi, format, ap);
|
|
va_end(ap);
|
|
|
|
return pi;
|
|
}
|
|
|
|
proto_item *
|
|
proto_tree_add_uint_format(proto_tree *tree, int hfindex, tvbuff_t *tvb, gint start, gint length,
|
|
guint32 value, const char *format, ...)
|
|
{
|
|
proto_item *pi;
|
|
va_list ap;
|
|
|
|
pi = proto_tree_add_uint(tree, hfindex, tvb, start, length, value);
|
|
if (pi == NULL)
|
|
return (NULL);
|
|
|
|
va_start(ap, format);
|
|
proto_tree_set_representation(pi, format, ap);
|
|
va_end(ap);
|
|
|
|
return pi;
|
|
}
|
|
|
|
/* Set the FT_UINT{8,16,24,32} value */
|
|
static void
|
|
proto_tree_set_uint(field_info *fi, guint32 value)
|
|
{
|
|
header_field_info *hfinfo;
|
|
guint32 integer;
|
|
|
|
hfinfo = fi->hfinfo;
|
|
integer = value;
|
|
|
|
if (hfinfo->bitmask) {
|
|
/* Mask out irrelevant portions */
|
|
integer &= hfinfo->bitmask;
|
|
|
|
/* Shift bits */
|
|
if (hfinfo->bitshift > 0) {
|
|
integer >>= hfinfo->bitshift;
|
|
}
|
|
}
|
|
|
|
if (hfinfo->type == FT_BOOLEAN) {
|
|
const true_false_string *tfstring = &tfs_true_false;
|
|
if (hfinfo->strings) {
|
|
tfstring = (const struct true_false_string*) hfinfo->strings;
|
|
}
|
|
col_custom_set_fstr(fi->hfinfo, "%s", integer ? tfstring->true_string : tfstring->false_string);
|
|
} else if (hfinfo->strings) {
|
|
col_custom_set_fstr(fi->hfinfo, "%s", val_to_str(integer, cVALS(hfinfo->strings), "%d"));
|
|
} else if (IS_BASE_DUAL(hfinfo->display)) {
|
|
col_custom_set_fstr(fi->hfinfo, hfinfo_uint_value_format(hfinfo), integer, integer);
|
|
} else {
|
|
col_custom_set_fstr(fi->hfinfo, hfinfo_uint_value_format(hfinfo), integer);
|
|
}
|
|
fvalue_set_uinteger(&fi->value, integer);
|
|
}
|
|
|
|
/* Add FT_UINT64 to a proto_tree */
|
|
proto_item *
|
|
proto_tree_add_uint64(proto_tree *tree, int hfindex, tvbuff_t *tvb, gint start, gint length,
|
|
guint64 value)
|
|
{
|
|
proto_item *pi = NULL;
|
|
field_info *new_fi;
|
|
header_field_info *hfinfo;
|
|
|
|
if (!tree)
|
|
return (NULL);
|
|
|
|
TRY_TO_FAKE_THIS_ITEM(tree, hfindex);
|
|
|
|
PROTO_REGISTRAR_GET_NTH(hfindex, hfinfo);
|
|
DISSECTOR_ASSERT(hfinfo->type == FT_UINT64);
|
|
|
|
pi = proto_tree_add_pi(tree, hfindex, tvb, start, &length, &new_fi);
|
|
proto_tree_set_uint64(new_fi, value);
|
|
|
|
return pi;
|
|
}
|
|
|
|
proto_item *
|
|
proto_tree_add_uint64_format_value(proto_tree *tree, int hfindex, tvbuff_t *tvb,
|
|
gint start, gint length, guint64 value, const char *format, ...)
|
|
{
|
|
proto_item *pi;
|
|
va_list ap;
|
|
|
|
pi = proto_tree_add_uint64(tree, hfindex, tvb, start, length, value);
|
|
if (pi == NULL)
|
|
return (NULL);
|
|
|
|
va_start(ap, format);
|
|
proto_tree_set_representation_value(pi, format, ap);
|
|
va_end(ap);
|
|
|
|
return pi;
|
|
}
|
|
|
|
proto_item *
|
|
proto_tree_add_uint64_format(proto_tree *tree, int hfindex, tvbuff_t *tvb, gint start, gint length,
|
|
guint64 value, const char *format, ...)
|
|
{
|
|
proto_item *pi;
|
|
va_list ap;
|
|
|
|
pi = proto_tree_add_uint64(tree, hfindex, tvb, start, length, value);
|
|
if (pi == NULL)
|
|
return (NULL);
|
|
|
|
va_start(ap, format);
|
|
proto_tree_set_representation(pi, format, ap);
|
|
va_end(ap);
|
|
|
|
return pi;
|
|
}
|
|
|
|
/* Add FT_INT{8,16,24,32} to a proto_tree */
|
|
proto_item *
|
|
proto_tree_add_int(proto_tree *tree, int hfindex, tvbuff_t *tvb, gint start, gint length,
|
|
gint32 value)
|
|
{
|
|
proto_item *pi = NULL;
|
|
field_info *new_fi;
|
|
header_field_info *hfinfo;
|
|
|
|
if (!tree)
|
|
return (NULL);
|
|
|
|
TRY_TO_FAKE_THIS_ITEM(tree, hfindex);
|
|
|
|
PROTO_REGISTRAR_GET_NTH(hfindex, hfinfo);
|
|
switch(hfinfo->type) {
|
|
case FT_INT8:
|
|
case FT_INT16:
|
|
case FT_INT24:
|
|
case FT_INT32:
|
|
pi = proto_tree_add_pi(tree, hfindex, tvb, start, &length,
|
|
&new_fi);
|
|
proto_tree_set_int(new_fi, value);
|
|
break;
|
|
|
|
default:
|
|
DISSECTOR_ASSERT_NOT_REACHED();
|
|
}
|
|
|
|
return pi;
|
|
}
|
|
|
|
proto_item *
|
|
proto_tree_add_int_format_value(proto_tree *tree, int hfindex, tvbuff_t *tvb,
|
|
gint start, gint length, gint32 value, const char *format, ...)
|
|
{
|
|
proto_item *pi = NULL;
|
|
va_list ap;
|
|
|
|
pi = proto_tree_add_int(tree, hfindex, tvb, start, length, value);
|
|
if (pi == NULL)
|
|
return (NULL);
|
|
|
|
va_start(ap, format);
|
|
proto_tree_set_representation_value(pi, format, ap);
|
|
va_end(ap);
|
|
|
|
return pi;
|
|
}
|
|
|
|
proto_item *
|
|
proto_tree_add_int_format(proto_tree *tree, int hfindex, tvbuff_t *tvb, gint start, gint length,
|
|
gint32 value, const char *format, ...)
|
|
{
|
|
proto_item *pi = NULL;
|
|
va_list ap;
|
|
|
|
pi = proto_tree_add_int(tree, hfindex, tvb, start, length, value);
|
|
if (pi == NULL)
|
|
return (NULL);
|
|
|
|
va_start(ap, format);
|
|
proto_tree_set_representation(pi, format, ap);
|
|
va_end(ap);
|
|
|
|
return pi;
|
|
}
|
|
|
|
/* Set the FT_INT{8,16,24,32} value */
|
|
static void
|
|
proto_tree_set_int(field_info *fi, gint32 value)
|
|
{
|
|
header_field_info *hfinfo;
|
|
guint32 integer;
|
|
|
|
hfinfo = fi->hfinfo;
|
|
integer = (guint32) value;
|
|
|
|
if (hfinfo->bitmask) {
|
|
/* Mask out irrelevant portions */
|
|
integer &= hfinfo->bitmask;
|
|
|
|
/* Shift bits */
|
|
if (hfinfo->bitshift > 0) {
|
|
integer >>= hfinfo->bitshift;
|
|
}
|
|
}
|
|
|
|
if (hfinfo->strings) {
|
|
col_custom_set_fstr(fi->hfinfo, "%s", val_to_str(integer, cVALS(hfinfo->strings), "%d"));
|
|
} else if (IS_BASE_DUAL(hfinfo->display)) {
|
|
col_custom_set_fstr(fi->hfinfo, hfinfo_int_value_format(hfinfo), integer, integer);
|
|
} else {
|
|
col_custom_set_fstr(fi->hfinfo, hfinfo_int_value_format(hfinfo), integer);
|
|
}
|
|
fvalue_set_sinteger(&fi->value, integer);
|
|
}
|
|
|
|
/* Add FT_INT64 to a proto_tree */
|
|
proto_item *
|
|
proto_tree_add_int64(proto_tree *tree, int hfindex, tvbuff_t *tvb, gint start, gint length,
|
|
gint64 value)
|
|
{
|
|
proto_item *pi = NULL;
|
|
field_info *new_fi;
|
|
header_field_info *hfinfo;
|
|
|
|
if (!tree)
|
|
return (NULL);
|
|
|
|
TRY_TO_FAKE_THIS_ITEM(tree, hfindex);
|
|
|
|
PROTO_REGISTRAR_GET_NTH(hfindex, hfinfo);
|
|
DISSECTOR_ASSERT(hfinfo->type == FT_INT64);
|
|
|
|
pi = proto_tree_add_pi(tree, hfindex, tvb, start, &length, &new_fi);
|
|
proto_tree_set_uint64(new_fi, (guint64)value);
|
|
|
|
return pi;
|
|
}
|
|
|
|
proto_item *
|
|
proto_tree_add_int64_format_value(proto_tree *tree, int hfindex, tvbuff_t *tvb,
|
|
gint start, gint length, gint64 value, const char *format, ...)
|
|
{
|
|
proto_item *pi;
|
|
va_list ap;
|
|
|
|
pi = proto_tree_add_int64(tree, hfindex, tvb, start, length, value);
|
|
if (pi == NULL)
|
|
return (NULL);
|
|
|
|
va_start(ap, format);
|
|
proto_tree_set_representation_value(pi, format, ap);
|
|
va_end(ap);
|
|
|
|
return pi;
|
|
}
|
|
|
|
proto_item *
|
|
proto_tree_add_int64_format(proto_tree *tree, int hfindex, tvbuff_t *tvb, gint start, gint length,
|
|
gint64 value, const char *format, ...)
|
|
{
|
|
proto_item *pi;
|
|
va_list ap;
|
|
|
|
pi = proto_tree_add_int64(tree, hfindex, tvb, start, length, value);
|
|
if (pi == NULL)
|
|
return (NULL);
|
|
|
|
va_start(ap, format);
|
|
proto_tree_set_representation(pi, format, ap);
|
|
va_end(ap);
|
|
|
|
return pi;
|
|
}
|
|
|
|
/* Throw an exception if we exceed this many tree items. */
|
|
/* XXX - This should probably be a preference */
|
|
#define MAX_TREE_ITEMS (1 * 1000 * 1000)
|
|
/* Add a field_info struct to the proto_tree, encapsulating it in a proto_node */
|
|
static proto_item *
|
|
proto_tree_add_node(proto_tree *tree, field_info *fi)
|
|
{
|
|
proto_node *pnode, *tnode, *sibling;
|
|
field_info *tfi;
|
|
|
|
/*
|
|
* Make sure "tree" is ready to have subtrees under it, by
|
|
* checking whether it's been given an ett_ value.
|
|
*
|
|
* "tnode->finfo" may be null; that's the case for the root
|
|
* node of the protocol tree. That node is not displayed,
|
|
* so it doesn't need an ett_ value to remember whether it
|
|
* was expanded.
|
|
*/
|
|
tnode = tree;
|
|
tfi = tnode->finfo;
|
|
if (tfi != NULL && (tfi->tree_type < 0 || tfi->tree_type >= num_tree_types)) {
|
|
REPORT_DISSECTOR_BUG(ep_strdup_printf("\"%s\" - \"%s\" tfi->tree_type: %u invalid (%s:%u)",
|
|
fi->hfinfo->name, fi->hfinfo->abbrev, tfi->tree_type, __FILE__, __LINE__));
|
|
/* XXX - is it safe to continue here? */
|
|
}
|
|
|
|
DISSECTOR_ASSERT(tfi == NULL ||
|
|
(tfi->tree_type >= 0 && tfi->tree_type < num_tree_types));
|
|
|
|
PTREE_DATA(tree)->count++;
|
|
if (PTREE_DATA(tree)->count > MAX_TREE_ITEMS) {
|
|
/* Let the exception handler add items to the tree */
|
|
PTREE_DATA(tree)->count = 0;
|
|
THROW_MESSAGE(DissectorError,
|
|
ep_strdup_printf("More than %d items in the tree -- possible infinite loop", MAX_TREE_ITEMS));
|
|
}
|
|
|
|
PROTO_NODE_NEW(pnode);
|
|
pnode->parent = tnode;
|
|
pnode->finfo = fi;
|
|
pnode->tree_data = PTREE_DATA(tree);
|
|
|
|
if (tnode->last_child != NULL) {
|
|
sibling = tnode->last_child;
|
|
DISSECTOR_ASSERT(sibling->next == NULL);
|
|
sibling->next = pnode;
|
|
} else
|
|
tnode->first_child = pnode;
|
|
tnode->last_child = pnode;
|
|
|
|
return (proto_item*)pnode;
|
|
}
|
|
|
|
|
|
/* Generic way to allocate field_info and add to proto_tree.
|
|
* Sets *pfi to address of newly-allocated field_info struct, if pfi is
|
|
* non-NULL. */
|
|
static proto_item *
|
|
proto_tree_add_pi(proto_tree *tree, int hfindex, tvbuff_t *tvb, gint start,
|
|
gint *length, field_info **pfi)
|
|
{
|
|
proto_item *pi;
|
|
field_info *fi;
|
|
GHashTable *hash;
|
|
GPtrArray *ptrs;
|
|
|
|
if (!tree)
|
|
return(NULL);
|
|
|
|
fi = alloc_field_info(tree, hfindex, tvb, start, length);
|
|
pi = proto_tree_add_node(tree, fi);
|
|
|
|
/* If the proto_tree wants to keep a record of this finfo
|
|
* for quick lookup, then record it. */
|
|
if (fi->hfinfo->ref_count) {
|
|
/*HERE*/
|
|
hash = PTREE_DATA(tree)->interesting_hfids;
|
|
ptrs = g_hash_table_lookup(hash, GINT_TO_POINTER(hfindex));
|
|
if (ptrs) {
|
|
g_ptr_array_add(ptrs, fi);
|
|
}
|
|
}
|
|
|
|
/* Does the caller want to know the fi pointer? */
|
|
if (pfi) {
|
|
*pfi = fi;
|
|
}
|
|
|
|
return pi;
|
|
}
|
|
|
|
|
|
static header_field_info *
|
|
get_hfi_and_length(int hfindex, tvbuff_t *tvb, gint start, gint *length,
|
|
gint *item_length)
|
|
{
|
|
header_field_info *hfinfo;
|
|
gint length_remaining;
|
|
|
|
/*
|
|
* We only allow a null tvbuff if the item has a zero length,
|
|
* i.e. if there's no data backing it.
|
|
*/
|
|
DISSECTOR_ASSERT(tvb != NULL || *length == 0);
|
|
|
|
PROTO_REGISTRAR_GET_NTH(hfindex, hfinfo);
|
|
|
|
/*
|
|
* XXX - in some protocols, there are 32-bit unsigned length
|
|
* fields, so lengths in protocol tree and tvbuff routines
|
|
* should really be unsigned. We should have, for those
|
|
* field types for which "to the end of the tvbuff" makes sense,
|
|
* additional routines that take no length argument and
|
|
* add fields that run to the end of the tvbuff.
|
|
*/
|
|
if (*length == -1) {
|
|
/*
|
|
* For FT_NONE, FT_PROTOCOL, FT_BYTES, and FT_STRING fields,
|
|
* a length of -1 means "set the length to what remains in
|
|
* the tvbuff".
|
|
*
|
|
* The assumption is either that
|
|
*
|
|
* 1) the length of the item can only be determined
|
|
* by dissection (typically true of items with
|
|
* subitems, which are probably FT_NONE or
|
|
* FT_PROTOCOL)
|
|
*
|
|
* or
|
|
*
|
|
* 2) if the tvbuff is "short" (either due to a short
|
|
* snapshot length or due to lack of reassembly of
|
|
* fragments/segments/whatever), we want to display
|
|
* what's available in the field (probably FT_BYTES
|
|
* or FT_STRING) and then throw an exception later
|
|
*
|
|
* or
|
|
*
|
|
* 3) the field is defined to be "what's left in the
|
|
* packet"
|
|
*
|
|
* so we set the length to what remains in the tvbuff so
|
|
* that, if we throw an exception while dissecting, it
|
|
* has what is probably the right value.
|
|
*
|
|
* For FT_STRINGZ, it means "the string is null-terminated,
|
|
* not null-padded; set the length to the actual length
|
|
* of the string", and if the tvbuff if short, we just
|
|
* throw an exception.
|
|
*
|
|
* It's not valid for any other type of field.
|
|
*/
|
|
switch (hfinfo->type) {
|
|
|
|
case FT_PROTOCOL:
|
|
/*
|
|
* We allow this to be zero-length - for
|
|
* example, an ONC RPC NULL procedure has
|
|
* neither arguments nor reply, so the
|
|
* payload for that protocol is empty.
|
|
*
|
|
* However, if the length is negative, the
|
|
* start offset is *past* the byte past the
|
|
* end of the tvbuff, so we throw an
|
|
* exception.
|
|
*/
|
|
*length = tvb_length_remaining(tvb, start);
|
|
if (*length < 0) {
|
|
/*
|
|
* Use "tvb_ensure_bytes_exist()"
|
|
* to force the appropriate exception
|
|
* to be thrown.
|
|
*/
|
|
tvb_ensure_bytes_exist(tvb, start, 0);
|
|
}
|
|
DISSECTOR_ASSERT(*length >= 0);
|
|
break;
|
|
|
|
case FT_NONE:
|
|
case FT_BYTES:
|
|
case FT_STRING:
|
|
*length = tvb_ensure_length_remaining(tvb, start);
|
|
DISSECTOR_ASSERT(*length >= 0);
|
|
break;
|
|
|
|
case FT_STRINGZ:
|
|
/*
|
|
* Leave the length as -1, so our caller knows
|
|
* it was -1.
|
|
*/
|
|
break;
|
|
|
|
default:
|
|
DISSECTOR_ASSERT_NOT_REACHED();
|
|
}
|
|
*item_length = *length;
|
|
} else {
|
|
*item_length = *length;
|
|
if (hfinfo->type == FT_PROTOCOL || hfinfo->type == FT_NONE) {
|
|
/*
|
|
* These types are for interior nodes of the
|
|
* tree, and don't have data associated with
|
|
* them; if the length is negative (XXX - see
|
|
* above) or goes past the end of the tvbuff,
|
|
* cut it short at the end of the tvbuff.
|
|
* That way, if this field is selected in
|
|
* Wireshark, we don't highlight stuff past
|
|
* the end of the data.
|
|
*/
|
|
/* XXX - what to do, if we don't have a tvb? */
|
|
if (tvb) {
|
|
length_remaining = tvb_length_remaining(tvb, start);
|
|
if (*item_length < 0 ||
|
|
(*item_length > 0 &&
|
|
(length_remaining < *item_length)))
|
|
*item_length = length_remaining;
|
|
}
|
|
}
|
|
if (*item_length < 0) {
|
|
THROW(ReportedBoundsError);
|
|
}
|
|
}
|
|
|
|
return hfinfo;
|
|
}
|
|
|
|
static field_info *
|
|
new_field_info(proto_tree *tree, header_field_info *hfinfo, tvbuff_t *tvb,
|
|
gint start, gint item_length)
|
|
{
|
|
field_info *fi;
|
|
|
|
FIELD_INFO_NEW(fi);
|
|
|
|
fi->hfinfo = hfinfo;
|
|
fi->start = start;
|
|
fi->start+=(tvb)?TVB_RAW_OFFSET(tvb):0;
|
|
fi->length = item_length;
|
|
fi->tree_type = -1;
|
|
fi->flags = 0;
|
|
if (!PTREE_DATA(tree)->visible)
|
|
FI_SET_FLAG(fi, FI_HIDDEN);
|
|
fvalue_init(&fi->value, fi->hfinfo->type);
|
|
fi->rep = NULL;
|
|
|
|
/* add the data source tvbuff */
|
|
fi->ds_tvb=tvb?TVB_GET_DS_TVB(tvb):NULL;
|
|
|
|
fi->appendix_start = 0;
|
|
fi->appendix_length = 0;
|
|
|
|
return fi;
|
|
}
|
|
|
|
static field_info *
|
|
alloc_field_info(proto_tree *tree, int hfindex, tvbuff_t *tvb, gint start,
|
|
gint *length)
|
|
{
|
|
header_field_info *hfinfo;
|
|
gint item_length;
|
|
|
|
hfinfo = get_hfi_and_length(hfindex, tvb, start, length, &item_length);
|
|
return new_field_info(tree, hfinfo, tvb, start, item_length);
|
|
}
|
|
|
|
/* If the protocol tree is to be visible, set the representation of a
|
|
proto_tree entry with the name of the field for the item and with
|
|
the value formatted with the supplied printf-style format and
|
|
argument list. */
|
|
static void
|
|
proto_tree_set_representation_value(proto_item *pi, const char *format, va_list ap)
|
|
{
|
|
int ret; /*tmp return value */
|
|
int replen;
|
|
field_info *fi = PITEM_FINFO(pi);
|
|
header_field_info *hf = fi->hfinfo;
|
|
|
|
if (!PROTO_ITEM_IS_HIDDEN(pi)) {
|
|
ITEM_LABEL_NEW(fi->rep);
|
|
replen = 0;
|
|
if (hf->bitmask && (hf->type == FT_BOOLEAN || IS_FT_UINT(hf->type))) {
|
|
char tmpbuf[64];
|
|
guint32 val;
|
|
|
|
val = fvalue_get_uinteger(&fi->value);
|
|
if (hf->bitshift > 0) {
|
|
val <<= hf->bitshift;
|
|
}
|
|
decode_bitfield_value(tmpbuf, val, hf->bitmask, hfinfo_bitwidth(hf));
|
|
/* put in the hf name */
|
|
ret = g_snprintf(fi->rep->representation, ITEM_LABEL_LENGTH,
|
|
"%s%s: ", tmpbuf, fi->hfinfo->name);
|
|
} else {
|
|
/* put in the hf name */
|
|
ret = g_snprintf(fi->rep->representation, ITEM_LABEL_LENGTH,
|
|
"%s: ", fi->hfinfo->name);
|
|
}
|
|
if ((ret == -1) || (ret >= ITEM_LABEL_LENGTH)) {
|
|
/* That's all we can put in the representation. */
|
|
fi->rep->representation[ITEM_LABEL_LENGTH - 1] = '\0';
|
|
return;
|
|
}
|
|
replen = ret;
|
|
|
|
/* Put in the value of the string */
|
|
ret = g_vsnprintf(fi->rep->representation + replen,
|
|
ITEM_LABEL_LENGTH - replen, format, ap);
|
|
if ((ret == -1) || (ret >= ITEM_LABEL_LENGTH - replen)) {
|
|
/* Uh oh, we don't have enough room. Tell the user
|
|
* that the field is truncated.
|
|
*/
|
|
char *oldrep;
|
|
|
|
fi->rep->representation[ITEM_LABEL_LENGTH - 1] = '\0';
|
|
|
|
/* Argh, we cannot reuse 'ap' here. So make a copy
|
|
* of what we formatted for (re)use below.
|
|
*/
|
|
oldrep = g_strdup(fi->rep->representation);
|
|
|
|
ret = g_snprintf(fi->rep->representation,
|
|
ITEM_LABEL_LENGTH,
|
|
"[truncated] %s",
|
|
oldrep);
|
|
fi->rep->representation[ITEM_LABEL_LENGTH - 1] = '\0';
|
|
g_free(oldrep);
|
|
}
|
|
}
|
|
}
|
|
|
|
/* If the protocol tree is to be visible, set the representation of a
|
|
proto_tree entry with the representation formatted with the supplied
|
|
printf-style format and argument list. */
|
|
static void
|
|
proto_tree_set_representation(proto_item *pi, const char *format, va_list ap)
|
|
{
|
|
int ret; /*tmp return value */
|
|
field_info *fi = PITEM_FINFO(pi);
|
|
|
|
if (!PROTO_ITEM_IS_HIDDEN(pi)) {
|
|
ITEM_LABEL_NEW(fi->rep);
|
|
ret = g_vsnprintf(fi->rep->representation, ITEM_LABEL_LENGTH,
|
|
format, ap);
|
|
if ((ret == -1) || (ret >= ITEM_LABEL_LENGTH)) {
|
|
/* Uh oh, we don't have enough room. Tell the user
|
|
* that the field is truncated.
|
|
*/
|
|
char *oldrep;
|
|
|
|
fi->rep->representation[ITEM_LABEL_LENGTH - 1] = '\0';
|
|
|
|
/* Argh, we cannot reuse 'ap' here. So make a copy
|
|
* of what we formatted for (re)use below.
|
|
*/
|
|
oldrep = g_strdup(fi->rep->representation);
|
|
|
|
g_snprintf(fi->rep->representation, ITEM_LABEL_LENGTH,
|
|
"[truncated] %s", oldrep);
|
|
fi->rep->representation[ITEM_LABEL_LENGTH - 1] = '\0';
|
|
g_free(oldrep);
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Set text of proto_item after having already been created. */
|
|
void
|
|
proto_item_set_text(proto_item *pi, const char *format, ...)
|
|
{
|
|
field_info *fi = NULL;
|
|
va_list ap;
|
|
|
|
if (pi==NULL) {
|
|
return;
|
|
}
|
|
|
|
fi = PITEM_FINFO(pi);
|
|
|
|
if(fi->rep){
|
|
ITEM_LABEL_FREE(fi->rep);
|
|
}
|
|
|
|
va_start(ap, format);
|
|
proto_tree_set_representation(pi, format, ap);
|
|
va_end(ap);
|
|
}
|
|
|
|
/* Append to text of proto_item after having already been created. */
|
|
void
|
|
proto_item_append_text(proto_item *pi, const char *format, ...)
|
|
{
|
|
field_info *fi = NULL;
|
|
size_t curlen;
|
|
va_list ap;
|
|
int ret; /*tmp return value */
|
|
|
|
if (pi==NULL) {
|
|
return;
|
|
}
|
|
|
|
fi = PITEM_FINFO(pi);
|
|
if (fi==NULL) {
|
|
return;
|
|
}
|
|
|
|
if (!PROTO_ITEM_IS_HIDDEN(pi)) {
|
|
va_start(ap, format);
|
|
|
|
/*
|
|
* If we don't already have a representation,
|
|
* generate the default representation.
|
|
*/
|
|
if (fi->rep == NULL) {
|
|
ITEM_LABEL_NEW(fi->rep);
|
|
proto_item_fill_label(fi, fi->rep->representation);
|
|
}
|
|
|
|
curlen = strlen(fi->rep->representation);
|
|
if (ITEM_LABEL_LENGTH > curlen) {
|
|
ret = g_vsnprintf(fi->rep->representation + curlen,
|
|
ITEM_LABEL_LENGTH - curlen, format, ap);
|
|
if ((ret == -1) || (ret >= (int)(ITEM_LABEL_LENGTH - curlen)))
|
|
fi->rep->representation[ITEM_LABEL_LENGTH - 1] = '\0';
|
|
}
|
|
va_end(ap);
|
|
}
|
|
}
|
|
|
|
void
|
|
proto_item_set_len(proto_item *pi, gint length)
|
|
{
|
|
field_info *fi;
|
|
|
|
if (pi == NULL)
|
|
return;
|
|
fi = PITEM_FINFO(pi);
|
|
DISSECTOR_ASSERT(length >= 0);
|
|
fi->length = length;
|
|
|
|
if (fi->value.ftype->ftype == FT_BYTES)
|
|
fi->value.value.bytes->len = length;
|
|
}
|
|
|
|
/*
|
|
* Sets the length of the item based on its start and on the specified
|
|
* offset, which is the offset past the end of the item; as the start
|
|
* in the item is relative to the beginning of the data source tvbuff,
|
|
* we need to pass in a tvbuff - the end offset is relative to the beginning
|
|
* of that tvbuff.
|
|
*/
|
|
void
|
|
proto_item_set_end(proto_item *pi, tvbuff_t *tvb, gint end)
|
|
{
|
|
field_info *fi;
|
|
|
|
if (pi == NULL)
|
|
return;
|
|
fi = PITEM_FINFO(pi);
|
|
end += TVB_RAW_OFFSET(tvb);
|
|
DISSECTOR_ASSERT(end >= fi->start);
|
|
fi->length = end - fi->start;
|
|
}
|
|
|
|
int
|
|
proto_item_get_len(proto_item *pi)
|
|
{
|
|
field_info *fi = PITEM_FINFO(pi);
|
|
return fi->length;
|
|
}
|
|
|
|
|
|
/** clear flags according to the mask and set new flag values */
|
|
#define FI_REPLACE_FLAGS(fi, mask, flags_in) { \
|
|
(fi->flags = (fi)->flags & ~(mask)); \
|
|
(fi->flags = (fi)->flags | (flags_in)); \
|
|
}
|
|
|
|
gboolean
|
|
proto_item_set_expert_flags(proto_item *pi, int group, guint severity)
|
|
{
|
|
if(pi == NULL || pi->finfo == NULL)
|
|
return FALSE;
|
|
|
|
/* only change things if severity is worse or at least equal than before */
|
|
if(severity >= FI_GET_FLAG(pi->finfo, PI_SEVERITY_MASK)) {
|
|
FI_REPLACE_FLAGS(pi->finfo, PI_GROUP_MASK, group);
|
|
FI_REPLACE_FLAGS(pi->finfo, PI_SEVERITY_MASK, severity);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
|
|
|
|
proto_tree*
|
|
proto_tree_create_root(void)
|
|
{
|
|
proto_node *pnode;
|
|
|
|
/* Initialize the proto_node */
|
|
PROTO_NODE_NEW(pnode);
|
|
pnode->parent = NULL;
|
|
pnode->finfo = NULL;
|
|
pnode->tree_data = g_new(tree_data_t, 1);
|
|
|
|
/* Initialize the tree_data_t */
|
|
pnode->tree_data->interesting_hfids =
|
|
g_hash_table_new(g_direct_hash, g_direct_equal);
|
|
|
|
/* Set the default to FALSE so it's easier to
|
|
* find errors; if we expect to see the protocol tree
|
|
* but for some reason the default 'visible' is not
|
|
* changed, then we'll find out very quickly. */
|
|
pnode->tree_data->visible = FALSE;
|
|
|
|
/* Keep track of the number of children */
|
|
pnode->tree_data->count = 0;
|
|
|
|
return (proto_tree*) pnode;
|
|
}
|
|
|
|
|
|
/* "prime" a proto_tree with a single hfid that a dfilter
|
|
* is interested in. */
|
|
void
|
|
proto_tree_prime_hfid(proto_tree *tree, gint hfid)
|
|
{
|
|
header_field_info *hfinfo;
|
|
|
|
g_hash_table_insert(PTREE_DATA(tree)->interesting_hfids,
|
|
GINT_TO_POINTER(hfid), g_ptr_array_new());
|
|
|
|
PROTO_REGISTRAR_GET_NTH(hfid, hfinfo);
|
|
/* this field is referenced by a filter so increase the refcount.
|
|
also increase the refcount for the parent, i.e the protocol.
|
|
*/
|
|
hfinfo->ref_count++;
|
|
/* only increase the refcount if there is a parent.
|
|
if this is a protocol and not a field then parent will be -1
|
|
and there is no parent to add any refcounting for.
|
|
*/
|
|
if (hfinfo->parent != -1) {
|
|
header_field_info *parent_hfinfo;
|
|
PROTO_REGISTRAR_GET_NTH(hfinfo->parent, parent_hfinfo);
|
|
parent_hfinfo->ref_count++;
|
|
}
|
|
}
|
|
|
|
proto_tree*
|
|
proto_item_add_subtree(proto_item *pi, gint idx) {
|
|
field_info *fi;
|
|
|
|
if (!pi)
|
|
return(NULL);
|
|
|
|
fi = PITEM_FINFO(pi);
|
|
DISSECTOR_ASSERT(idx >= 0 && idx < num_tree_types);
|
|
fi->tree_type = idx;
|
|
|
|
return (proto_tree*) pi;
|
|
}
|
|
|
|
proto_tree*
|
|
proto_item_get_subtree(proto_item *pi) {
|
|
field_info *fi;
|
|
|
|
if (!pi)
|
|
return(NULL);
|
|
fi = PITEM_FINFO(pi);
|
|
if ( (!fi) || (fi->tree_type == -1) )
|
|
return(NULL);
|
|
return (proto_tree*) pi;
|
|
}
|
|
|
|
proto_item*
|
|
proto_item_get_parent(proto_item *ti) {
|
|
if (!ti)
|
|
return (NULL);
|
|
return ti->parent;
|
|
}
|
|
|
|
proto_item*
|
|
proto_item_get_parent_nth(proto_item *ti, int gen) {
|
|
if (!ti)
|
|
return (NULL);
|
|
while (gen--) {
|
|
ti = ti->parent;
|
|
if (!ti)
|
|
return (NULL);
|
|
}
|
|
return ti;
|
|
}
|
|
|
|
|
|
proto_item*
|
|
proto_tree_get_parent(proto_tree *tree) {
|
|
if (!tree)
|
|
return (NULL);
|
|
return (proto_item*) tree;
|
|
}
|
|
|
|
proto_tree*
|
|
proto_tree_get_root(proto_tree *tree) {
|
|
if (!tree)
|
|
return (NULL);
|
|
while (tree->parent) {
|
|
tree = tree->parent;
|
|
}
|
|
return tree;
|
|
}
|
|
|
|
void
|
|
proto_tree_move_item(proto_tree *tree, proto_item *fixed_item, proto_item *item_to_move)
|
|
{
|
|
proto_item *curr_item;
|
|
|
|
|
|
/*** cut item_to_move out ***/
|
|
|
|
/* is item_to_move the first? */
|
|
if(tree->first_child == item_to_move) {
|
|
/* simply change first child to next */
|
|
tree->first_child = item_to_move->next;
|
|
} else {
|
|
/* find previous and change it's next */
|
|
for(curr_item = tree->first_child; curr_item != NULL; curr_item = curr_item->next) {
|
|
if(curr_item->next == item_to_move) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
DISSECTOR_ASSERT(curr_item);
|
|
|
|
curr_item->next = item_to_move->next;
|
|
|
|
/* fix last_child if required */
|
|
if(tree->last_child == item_to_move) {
|
|
tree->last_child = curr_item;
|
|
}
|
|
}
|
|
|
|
/*** insert to_move after fixed ***/
|
|
item_to_move->next = fixed_item->next;
|
|
fixed_item->next = item_to_move;
|
|
if(tree->last_child == fixed_item) {
|
|
tree->last_child = item_to_move;
|
|
}
|
|
}
|
|
|
|
void
|
|
proto_tree_set_appendix(proto_tree *tree, tvbuff_t *tvb, gint start, gint length)
|
|
{
|
|
field_info *fi;
|
|
|
|
if (tree == NULL)
|
|
return;
|
|
|
|
fi = tree->finfo;
|
|
start += TVB_RAW_OFFSET(tvb);
|
|
DISSECTOR_ASSERT(start >= 0);
|
|
DISSECTOR_ASSERT(length >= 0);
|
|
|
|
fi->appendix_start = start;
|
|
fi->appendix_length = length;
|
|
}
|
|
|
|
int
|
|
proto_register_protocol(const char *name, const char *short_name, const char *filter_name)
|
|
{
|
|
protocol_t *protocol;
|
|
header_field_info *hfinfo;
|
|
int proto_id;
|
|
char *existing_name;
|
|
gint *key;
|
|
guint i;
|
|
guchar c;
|
|
gboolean found_invalid;
|
|
|
|
/*
|
|
* Make sure there's not already a protocol with any of those
|
|
* names. Crash if there is, as that's an error in the code
|
|
* or an inappropriate plugin.
|
|
* This situation has to be fixed to not register more than one
|
|
* protocol with the same name.
|
|
*
|
|
* This is done by reducing the number of strcmp (and alike) calls as much as possible,
|
|
* as this significally slows down startup time.
|
|
*
|
|
* Drawback: As a hash value is used to reduce insert time,
|
|
* this might lead to a hash collision.
|
|
* However, as we have around 500+ protocols and we're using a 32 bit int this is very,
|
|
* very unlikely.
|
|
*/
|
|
|
|
key = g_malloc (sizeof(gint));
|
|
*key = wrs_str_hash(name);
|
|
existing_name = g_hash_table_lookup(proto_names, key);
|
|
if (existing_name != NULL) {
|
|
/* g_error will terminate the program */
|
|
g_error("Duplicate protocol name \"%s\"!"
|
|
" This might be caused by an inappropriate plugin or a development error.", name);
|
|
}
|
|
g_hash_table_insert(proto_names, key, (gpointer)name);
|
|
|
|
existing_name = g_hash_table_lookup(proto_short_names, (gpointer)short_name);
|
|
if (existing_name != NULL) {
|
|
g_error("Duplicate protocol short_name \"%s\"!"
|
|
" This might be caused by an inappropriate plugin or a development error.", short_name);
|
|
}
|
|
g_hash_table_insert(proto_short_names, (gpointer)short_name, (gpointer)short_name);
|
|
|
|
found_invalid = FALSE;
|
|
for (i = 0; i < strlen(filter_name); i++) {
|
|
c = filter_name[i];
|
|
if (!(islower(c) || isdigit(c) || c == '-' || c == '_' || c == '.')) {
|
|
found_invalid = TRUE;
|
|
}
|
|
}
|
|
if (found_invalid) {
|
|
g_error("Protocol filter name \"%s\" has one or more invalid characters."
|
|
" Allowed are lower characters, digits, '-', '_' and '.'."
|
|
" This might be caused by an inappropriate plugin or a development error.", filter_name);
|
|
}
|
|
existing_name = g_hash_table_lookup(proto_filter_names, (gpointer)filter_name);
|
|
if (existing_name != NULL) {
|
|
g_error("Duplicate protocol filter_name \"%s\"!"
|
|
" This might be caused by an inappropriate plugin or a development error.", filter_name);
|
|
}
|
|
g_hash_table_insert(proto_filter_names, (gpointer)filter_name, (gpointer)filter_name);
|
|
|
|
/* Add this protocol to the list of known protocols; the list
|
|
is sorted by protocol short name. */
|
|
protocol = g_malloc(sizeof (protocol_t));
|
|
protocol->name = name;
|
|
protocol->short_name = short_name;
|
|
protocol->filter_name = filter_name;
|
|
protocol->fields = NULL;
|
|
protocol->is_enabled = TRUE; /* protocol is enabled by default */
|
|
protocol->can_toggle = TRUE;
|
|
/* list will be sorted later by name, when all protocols completed registering */
|
|
protocols = g_list_prepend(protocols, protocol);
|
|
|
|
/* Here we do allocate a new header_field_info struct */
|
|
hfinfo = g_mem_chunk_alloc(gmc_hfinfo);
|
|
hfinfo->name = name;
|
|
hfinfo->abbrev = filter_name;
|
|
hfinfo->type = FT_PROTOCOL;
|
|
hfinfo->strings = protocol;
|
|
hfinfo->bitmask = 0;
|
|
hfinfo->bitshift = 0;
|
|
hfinfo->ref_count = 0;
|
|
hfinfo->blurb = NULL;
|
|
hfinfo->parent = -1; /* this field differentiates protos and fields */
|
|
|
|
proto_id = proto_register_field_init(hfinfo, hfinfo->parent);
|
|
protocol->proto_id = proto_id;
|
|
return proto_id;
|
|
}
|
|
|
|
/*
|
|
* Routines to use to iterate over the protocols.
|
|
* The argument passed to the iterator routines is an opaque cookie to
|
|
* their callers; it's the GList pointer for the current element in
|
|
* the list.
|
|
* The ID of the protocol is returned, or -1 if there is no protocol.
|
|
*/
|
|
int
|
|
proto_get_first_protocol(void **cookie)
|
|
{
|
|
protocol_t *protocol;
|
|
|
|
if (protocols == NULL)
|
|
return -1;
|
|
*cookie = protocols;
|
|
protocol = protocols->data;
|
|
return protocol->proto_id;
|
|
}
|
|
|
|
int
|
|
proto_get_next_protocol(void **cookie)
|
|
{
|
|
GList *list_item = *cookie;
|
|
protocol_t *protocol;
|
|
|
|
list_item = g_list_next(list_item);
|
|
if (list_item == NULL)
|
|
return -1;
|
|
*cookie = list_item;
|
|
protocol = list_item->data;
|
|
return protocol->proto_id;
|
|
}
|
|
|
|
header_field_info *
|
|
proto_get_first_protocol_field(int proto_id, void **cookie)
|
|
{
|
|
protocol_t *protocol = find_protocol_by_id(proto_id);
|
|
hf_register_info *ptr;
|
|
|
|
if ((protocol == NULL) || (protocol->fields == NULL))
|
|
return NULL;
|
|
|
|
*cookie = protocol->fields;
|
|
ptr = protocol->fields->data;
|
|
return &ptr->hfinfo;
|
|
}
|
|
|
|
header_field_info *
|
|
proto_get_next_protocol_field(void **cookie)
|
|
{
|
|
GList *list_item = *cookie;
|
|
hf_register_info *ptr;
|
|
|
|
list_item = g_list_next(list_item);
|
|
if (list_item == NULL)
|
|
return NULL;
|
|
|
|
*cookie = list_item;
|
|
ptr = list_item->data;
|
|
return &ptr->hfinfo;
|
|
}
|
|
|
|
protocol_t *
|
|
find_protocol_by_id(int proto_id)
|
|
{
|
|
header_field_info *hfinfo;
|
|
|
|
if(proto_id<0)
|
|
return NULL;
|
|
|
|
PROTO_REGISTRAR_GET_NTH(proto_id, hfinfo);
|
|
DISSECTOR_ASSERT(hfinfo->type==FT_PROTOCOL);
|
|
return (protocol_t *)hfinfo->strings;
|
|
}
|
|
|
|
static gint compare_filter_name(gconstpointer proto_arg,
|
|
gconstpointer filter_name)
|
|
{
|
|
const protocol_t *protocol = proto_arg;
|
|
const gchar* f_name = filter_name;
|
|
|
|
return (strcmp(protocol->filter_name, f_name));
|
|
}
|
|
|
|
int
|
|
proto_get_id(protocol_t *protocol)
|
|
{
|
|
return protocol->proto_id;
|
|
}
|
|
|
|
int proto_get_id_by_filter_name(const gchar* filter_name)
|
|
{
|
|
GList *list_entry;
|
|
protocol_t *protocol;
|
|
|
|
list_entry = g_list_find_custom(protocols, filter_name,
|
|
compare_filter_name);
|
|
|
|
if (list_entry == NULL)
|
|
return -1;
|
|
protocol = list_entry->data;
|
|
return protocol->proto_id;
|
|
}
|
|
|
|
const char *
|
|
proto_get_protocol_name(int proto_id)
|
|
{
|
|
protocol_t *protocol;
|
|
|
|
protocol = find_protocol_by_id(proto_id);
|
|
return protocol->name;
|
|
}
|
|
|
|
const char *
|
|
proto_get_protocol_short_name(protocol_t *protocol)
|
|
{
|
|
if (protocol == NULL)
|
|
return "(none)";
|
|
return protocol->short_name;
|
|
}
|
|
|
|
const char *
|
|
proto_get_protocol_filter_name(int proto_id)
|
|
{
|
|
protocol_t *protocol;
|
|
|
|
protocol = find_protocol_by_id(proto_id);
|
|
if (protocol == NULL)
|
|
return "(none)";
|
|
return protocol->filter_name;
|
|
}
|
|
|
|
gboolean
|
|
proto_is_protocol_enabled(protocol_t *protocol)
|
|
{
|
|
return protocol->is_enabled;
|
|
}
|
|
|
|
gboolean
|
|
proto_can_toggle_protocol(int proto_id)
|
|
{
|
|
protocol_t *protocol;
|
|
|
|
protocol = find_protocol_by_id(proto_id);
|
|
return protocol->can_toggle;
|
|
}
|
|
|
|
void
|
|
proto_set_decoding(int proto_id, gboolean enabled)
|
|
{
|
|
protocol_t *protocol;
|
|
|
|
protocol = find_protocol_by_id(proto_id);
|
|
DISSECTOR_ASSERT(protocol->can_toggle);
|
|
protocol->is_enabled = enabled;
|
|
}
|
|
|
|
void
|
|
proto_enable_all(void)
|
|
{
|
|
protocol_t *protocol;
|
|
GList *list_item = protocols;
|
|
|
|
if (protocols == NULL)
|
|
return;
|
|
|
|
while (list_item) {
|
|
protocol = list_item->data;
|
|
if (protocol->can_toggle)
|
|
protocol->is_enabled = TRUE;
|
|
list_item = g_list_next(list_item);
|
|
}
|
|
}
|
|
|
|
void
|
|
proto_set_cant_toggle(int proto_id)
|
|
{
|
|
protocol_t *protocol;
|
|
|
|
protocol = find_protocol_by_id(proto_id);
|
|
protocol->can_toggle = FALSE;
|
|
}
|
|
|
|
/* for use with static arrays only, since we don't allocate our own copies
|
|
of the header_field_info struct contained within the hf_register_info struct */
|
|
void
|
|
proto_register_field_array(int parent, hf_register_info *hf, int num_records)
|
|
{
|
|
int field_id, i;
|
|
hf_register_info *ptr = hf;
|
|
protocol_t *proto;
|
|
|
|
proto = find_protocol_by_id(parent);
|
|
for (i = 0; i < num_records; i++, ptr++) {
|
|
/*
|
|
* Make sure we haven't registered this yet.
|
|
* Most fields have variables associated with them
|
|
* that are initialized to -1; some have array elements,
|
|
* or possibly uninitialized variables, so we also allow
|
|
* 0 (which is unlikely to be the field ID we get back
|
|
* from "proto_register_field_init()").
|
|
*/
|
|
if (*ptr->p_id != -1 && *ptr->p_id != 0) {
|
|
fprintf(stderr,
|
|
"Duplicate field detected in call to proto_register_field_array: %s is already registered\n",
|
|
ptr->hfinfo.abbrev);
|
|
return;
|
|
}
|
|
|
|
if (proto != NULL) {
|
|
if (proto->fields == NULL) {
|
|
proto->fields = g_list_append(NULL, ptr);
|
|
proto->last_field = proto->fields;
|
|
} else {
|
|
proto->last_field =
|
|
g_list_append(proto->last_field, ptr)->next;
|
|
}
|
|
}
|
|
field_id = proto_register_field_init(&ptr->hfinfo, parent);
|
|
*ptr->p_id = field_id;
|
|
}
|
|
}
|
|
|
|
/* chars allowed in field abbrev */
|
|
static
|
|
const guchar fld_abbrev_chars[256] = {
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x00-0x0F */
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x10-0x1F */
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 0, /* 0x20-0x2F '-', '.' */
|
|
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, /* 0x30-0x3F '0'-'9' */
|
|
0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 0x40-0x4F 'A'-'O' */
|
|
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 1, /* 0x50-0x5F 'P'-'Z', '_' */
|
|
0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, /* 0x60-0x6F 'a'-'o' */
|
|
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, /* 0x70-0x7F 'p'-'z' */
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x80-0x8F */
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0x90-0x9F */
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xA0-0xAF */
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xB0-0xBF */
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xC0-0xCF */
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xD0-0xDF */
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xE0-0xEF */
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, /* 0xF0-0xFF */
|
|
};
|
|
|
|
/* temporary function containing assert part for easier profiling */
|
|
static void tmp_fld_check_assert(header_field_info *hfinfo) {
|
|
/* The field must have a name (with length > 0) */
|
|
DISSECTOR_ASSERT(hfinfo->name && hfinfo->name[0]);
|
|
|
|
/* fields with an empty string for an abbreviation aren't filterable */
|
|
DISSECTOR_ASSERT(hfinfo->abbrev);
|
|
|
|
/* These types of fields are allowed to have value_strings, true_false_strings or a protocol_t struct*/
|
|
DISSECTOR_ASSERT((hfinfo->strings == NULL) || (
|
|
(hfinfo->type == FT_UINT8) ||
|
|
(hfinfo->type == FT_UINT16) ||
|
|
(hfinfo->type == FT_UINT24) ||
|
|
(hfinfo->type == FT_UINT32) ||
|
|
(hfinfo->type == FT_INT8) ||
|
|
(hfinfo->type == FT_INT16) ||
|
|
(hfinfo->type == FT_INT24) ||
|
|
(hfinfo->type == FT_INT32) ||
|
|
(hfinfo->type == FT_BOOLEAN) ||
|
|
(hfinfo->type == FT_PROTOCOL) ||
|
|
(hfinfo->type == FT_FRAMENUM) ));
|
|
|
|
switch (hfinfo->type) {
|
|
|
|
case FT_INT8:
|
|
case FT_INT16:
|
|
case FT_INT24:
|
|
case FT_INT32:
|
|
case FT_INT64:
|
|
/* Hexadecimal and octal are, in printf() and everywhere else,
|
|
* unsigned so don't allow dissectors to register a signed
|
|
* field to be displayed unsigned. (Else how would we
|
|
* display values negative values?)
|
|
*
|
|
* If you want to take out this check, be sure to fix
|
|
* hfinfo_numeric_format() so that it does not assert out
|
|
* when trying to construct a hexadecimal representation of
|
|
* FT_INT*.
|
|
*/
|
|
DISSECTOR_ASSERT(hfinfo->display != BASE_HEX &&
|
|
hfinfo->display != BASE_HEX_DEC &&
|
|
hfinfo->display != BASE_DEC_HEX &&
|
|
hfinfo->display != BASE_OCT);
|
|
/* FALL THROUGH */
|
|
case FT_UINT8:
|
|
case FT_UINT16:
|
|
case FT_UINT24:
|
|
case FT_UINT32:
|
|
case FT_UINT64:
|
|
/* Require integral types (other than frame number, which is
|
|
always displayed in decimal) to have a number base */
|
|
DISSECTOR_ASSERT(hfinfo->display != BASE_NONE);
|
|
break;
|
|
|
|
case FT_FRAMENUM:
|
|
/* Don't allow bitfields or value strings for frame numbers */
|
|
DISSECTOR_ASSERT(hfinfo->bitmask == 0);
|
|
DISSECTOR_ASSERT(hfinfo->strings == NULL);
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
static int
|
|
proto_register_field_init(header_field_info *hfinfo, int parent)
|
|
{
|
|
|
|
tmp_fld_check_assert(hfinfo);
|
|
|
|
/* if this is a bitfield, compute bitshift */
|
|
if (hfinfo->bitmask) {
|
|
hfinfo->bitshift = wrs_count_bitshift(hfinfo->bitmask);
|
|
}
|
|
|
|
hfinfo->parent = parent;
|
|
hfinfo->same_name_next = NULL;
|
|
hfinfo->same_name_prev = NULL;
|
|
|
|
/* if we always add and never delete, then id == len - 1 is correct */
|
|
if(gpa_hfinfo.len>=gpa_hfinfo.allocated_len){
|
|
if(!gpa_hfinfo.hfi){
|
|
gpa_hfinfo.allocated_len=1000;
|
|
gpa_hfinfo.hfi=g_malloc(sizeof(header_field_info *)*1000);
|
|
} else {
|
|
gpa_hfinfo.allocated_len+=1000;
|
|
gpa_hfinfo.hfi=g_realloc(gpa_hfinfo.hfi, sizeof(header_field_info *)*gpa_hfinfo.allocated_len);
|
|
}
|
|
}
|
|
gpa_hfinfo.hfi[gpa_hfinfo.len]=hfinfo;
|
|
gpa_hfinfo.len++;
|
|
hfinfo->id = gpa_hfinfo.len - 1;
|
|
|
|
/* if we have real names, enter this field in the name tree */
|
|
if ((hfinfo->name[0] != 0) && (hfinfo->abbrev[0] != 0 )) {
|
|
|
|
header_field_info *same_name_next_hfinfo;
|
|
guchar c;
|
|
|
|
/* Check that the filter name (abbreviation) is legal;
|
|
* it must contain only alphanumerics, '-', "_", and ".". */
|
|
c = wrs_check_charset(fld_abbrev_chars, hfinfo->abbrev);
|
|
if (c) {
|
|
fprintf(stderr, "OOPS: '%c' in '%s'\n", c, hfinfo->abbrev);
|
|
DISSECTOR_ASSERT(!c);
|
|
}
|
|
|
|
/* We allow multiple hfinfo's to be registered under the same
|
|
* abbreviation. This was done for X.25, as, depending
|
|
* on whether it's modulo-8 or modulo-128 operation,
|
|
* some bitfield fields may be in different bits of
|
|
* a byte, and we want to be able to refer to that field
|
|
* with one name regardless of whether the packets
|
|
* are modulo-8 or modulo-128 packets. */
|
|
|
|
same_name_hfinfo = NULL;
|
|
|
|
g_tree_insert(gpa_name_tree, (gpointer) (hfinfo->abbrev), hfinfo);
|
|
/* GLIB 2.x - if it is already present
|
|
* the previous hfinfo with the same name is saved
|
|
* to same_name_hfinfo by value destroy callback */
|
|
if (same_name_hfinfo) {
|
|
/* There's already a field with this name.
|
|
* Put it after that field in the list of
|
|
* fields with this name, then allow the code
|
|
* after this if{} block to replace the old
|
|
* hfinfo with the new hfinfo in the GTree. Thus,
|
|
* we end up with a linked-list of same-named hfinfo's,
|
|
* with the root of the list being the hfinfo in the GTree */
|
|
same_name_next_hfinfo =
|
|
same_name_hfinfo->same_name_next;
|
|
|
|
hfinfo->same_name_next = same_name_next_hfinfo;
|
|
if (same_name_next_hfinfo)
|
|
same_name_next_hfinfo->same_name_prev = hfinfo;
|
|
|
|
same_name_hfinfo->same_name_next = hfinfo;
|
|
hfinfo->same_name_prev = same_name_hfinfo;
|
|
}
|
|
}
|
|
|
|
return hfinfo->id;
|
|
}
|
|
|
|
void
|
|
proto_register_subtree_array(gint *const *indices, int num_indices)
|
|
{
|
|
int i;
|
|
gint *const *ptr = indices;
|
|
|
|
/*
|
|
* If we've already allocated the array of tree types, expand
|
|
* it; this lets plugins such as mate add tree types after
|
|
* the initial startup. (If we haven't already allocated it,
|
|
* we don't allocate it; on the first pass, we just assign
|
|
* ett values and keep track of how many we've assigned, and
|
|
* when we're finished registering all dissectors we allocate
|
|
* the array, so that we do only one allocation rather than
|
|
* wasting CPU time and memory by growing the array for each
|
|
* dissector that registers ett values.)
|
|
*/
|
|
if (tree_is_expanded != NULL) {
|
|
tree_is_expanded =
|
|
g_realloc(tree_is_expanded,
|
|
(num_tree_types+num_indices)*sizeof (gboolean));
|
|
memset(tree_is_expanded + num_tree_types, 0,
|
|
num_indices*sizeof (gboolean));
|
|
}
|
|
|
|
/*
|
|
* Assign "num_indices" subtree numbers starting at "num_tree_types",
|
|
* returning the indices through the pointers in the array whose
|
|
* first element is pointed to by "indices", and update
|
|
* "num_tree_types" appropriately.
|
|
*/
|
|
for (i = 0; i < num_indices; i++, ptr++, num_tree_types++)
|
|
**ptr = num_tree_types;
|
|
}
|
|
|
|
void
|
|
proto_item_fill_label(field_info *fi, gchar *label_str)
|
|
{
|
|
header_field_info *hfinfo = fi->hfinfo;
|
|
|
|
guint8 *bytes;
|
|
guint32 integer;
|
|
ipv4_addr *ipv4;
|
|
e_guid_t *guid;
|
|
guint32 n_addr; /* network-order IPv4 address */
|
|
const gchar *name;
|
|
int ret; /*tmp return value */
|
|
|
|
switch(hfinfo->type) {
|
|
case FT_NONE:
|
|
case FT_PROTOCOL:
|
|
ret = g_snprintf(label_str, ITEM_LABEL_LENGTH,
|
|
"%s", hfinfo->name);
|
|
if ((ret == -1) || (ret >= ITEM_LABEL_LENGTH))
|
|
label_str[ITEM_LABEL_LENGTH - 1] = '\0';
|
|
break;
|
|
|
|
case FT_BOOLEAN:
|
|
fill_label_boolean(fi, label_str);
|
|
break;
|
|
|
|
case FT_BYTES:
|
|
case FT_UINT_BYTES:
|
|
bytes = fvalue_get(&fi->value);
|
|
if (bytes) {
|
|
ret = g_snprintf(label_str, ITEM_LABEL_LENGTH,
|
|
"%s: %s", hfinfo->name,
|
|
bytes_to_str(bytes, fvalue_length(&fi->value)));
|
|
if ((ret == -1) || (ret >= ITEM_LABEL_LENGTH)) {
|
|
/* Uh oh, we don't have enough room. Tell the
|
|
* user that the field is truncated.
|
|
*/
|
|
ret = g_snprintf(label_str, ITEM_LABEL_LENGTH,
|
|
"%s [truncated]: %s",
|
|
hfinfo->name,
|
|
bytes_to_str(bytes, fvalue_length(&fi->value)));
|
|
label_str[ITEM_LABEL_LENGTH - 1] = '\0';
|
|
}
|
|
}
|
|
else {
|
|
ret = g_snprintf(label_str, ITEM_LABEL_LENGTH,
|
|
"%s: <MISSING>", hfinfo->name);
|
|
if ((ret == -1) || (ret >= ITEM_LABEL_LENGTH))
|
|
label_str[ITEM_LABEL_LENGTH - 1] = '\0';
|
|
}
|
|
break;
|
|
|
|
/* Four types of integers to take care of:
|
|
* Bitfield, with val_string
|
|
* Bitfield, w/o val_string
|
|
* Non-bitfield, with val_string
|
|
* Non-bitfield, w/o val_string
|
|
*/
|
|
case FT_UINT8:
|
|
case FT_UINT16:
|
|
case FT_UINT24:
|
|
case FT_UINT32:
|
|
case FT_FRAMENUM:
|
|
if (hfinfo->bitmask) {
|
|
fill_label_bitfield(fi, label_str);
|
|
} else {
|
|
fill_label_uint(fi, label_str);
|
|
}
|
|
break;
|
|
|
|
case FT_UINT64:
|
|
fill_label_uint64(fi, label_str);
|
|
break;
|
|
|
|
case FT_INT8:
|
|
case FT_INT16:
|
|
case FT_INT24:
|
|
case FT_INT32:
|
|
DISSECTOR_ASSERT(!hfinfo->bitmask);
|
|
fill_label_int(fi, label_str);
|
|
break;
|
|
|
|
case FT_INT64:
|
|
fill_label_int64(fi, label_str);
|
|
break;
|
|
|
|
case FT_FLOAT:
|
|
ret = g_snprintf(label_str, ITEM_LABEL_LENGTH,
|
|
"%s: %." STRINGIFY(FLT_DIG) "f",
|
|
hfinfo->name, fvalue_get_floating(&fi->value));
|
|
if ((ret == -1) || (ret >= ITEM_LABEL_LENGTH))
|
|
label_str[ITEM_LABEL_LENGTH - 1] = '\0';
|
|
break;
|
|
|
|
case FT_DOUBLE:
|
|
ret = g_snprintf(label_str, ITEM_LABEL_LENGTH,
|
|
"%s: %." STRINGIFY(DBL_DIG) "g",
|
|
hfinfo->name, fvalue_get_floating(&fi->value));
|
|
if ((ret == -1) || (ret >= ITEM_LABEL_LENGTH))
|
|
label_str[ITEM_LABEL_LENGTH - 1] = '\0';
|
|
break;
|
|
|
|
case FT_ABSOLUTE_TIME:
|
|
ret = g_snprintf(label_str, ITEM_LABEL_LENGTH,
|
|
"%s: %s", hfinfo->name,
|
|
abs_time_to_str(fvalue_get(&fi->value)));
|
|
if ((ret == -1) || (ret >= ITEM_LABEL_LENGTH))
|
|
label_str[ITEM_LABEL_LENGTH - 1] = '\0';
|
|
break;
|
|
|
|
case FT_RELATIVE_TIME:
|
|
ret = g_snprintf(label_str, ITEM_LABEL_LENGTH,
|
|
"%s: %s seconds", hfinfo->name,
|
|
rel_time_to_secs_str(fvalue_get(&fi->value)));
|
|
if ((ret == -1) || (ret >= ITEM_LABEL_LENGTH))
|
|
label_str[ITEM_LABEL_LENGTH - 1] = '\0';
|
|
break;
|
|
|
|
case FT_IPXNET:
|
|
integer = fvalue_get_uinteger(&fi->value);
|
|
ret = g_snprintf(label_str, ITEM_LABEL_LENGTH,
|
|
"%s: %s (0x%08X)", hfinfo->name,
|
|
get_ipxnet_name(integer), integer);
|
|
if ((ret == -1) || (ret >= ITEM_LABEL_LENGTH))
|
|
label_str[ITEM_LABEL_LENGTH - 1] = '\0';
|
|
break;
|
|
|
|
case FT_ETHER:
|
|
bytes = fvalue_get(&fi->value);
|
|
ret = g_snprintf(label_str, ITEM_LABEL_LENGTH,
|
|
"%s: %s (%s)", hfinfo->name,
|
|
get_ether_name(bytes),
|
|
ether_to_str(bytes));
|
|
if ((ret == -1) || (ret >= ITEM_LABEL_LENGTH))
|
|
label_str[ITEM_LABEL_LENGTH - 1] = '\0';
|
|
break;
|
|
|
|
case FT_IPv4:
|
|
ipv4 = fvalue_get(&fi->value);
|
|
n_addr = ipv4_get_net_order_addr(ipv4);
|
|
ret = g_snprintf(label_str, ITEM_LABEL_LENGTH,
|
|
"%s: %s (%s)", hfinfo->name,
|
|
get_hostname(n_addr),
|
|
ip_to_str((guint8*)&n_addr));
|
|
if ((ret == -1) || (ret >= ITEM_LABEL_LENGTH))
|
|
label_str[ITEM_LABEL_LENGTH - 1] = '\0';
|
|
break;
|
|
|
|
case FT_IPv6:
|
|
bytes = fvalue_get(&fi->value);
|
|
ret = g_snprintf(label_str, ITEM_LABEL_LENGTH,
|
|
"%s: %s (%s)", hfinfo->name,
|
|
get_hostname6((struct e_in6_addr *)bytes),
|
|
ip6_to_str((struct e_in6_addr*)bytes));
|
|
if ((ret == -1) || (ret >= ITEM_LABEL_LENGTH))
|
|
label_str[ITEM_LABEL_LENGTH - 1] = '\0';
|
|
break;
|
|
|
|
case FT_GUID:
|
|
guid = fvalue_get(&fi->value);
|
|
ret = g_snprintf(label_str, ITEM_LABEL_LENGTH,
|
|
"%s: %s", hfinfo->name,
|
|
guid_to_str(guid));
|
|
if ((ret == -1) || (ret >= ITEM_LABEL_LENGTH))
|
|
label_str[ITEM_LABEL_LENGTH - 1] = '\0';
|
|
break;
|
|
|
|
case FT_OID:
|
|
bytes = fvalue_get(&fi->value);
|
|
name = oid_resolved_from_encoded(bytes, fvalue_length(&fi->value));
|
|
if (name) {
|
|
ret = g_snprintf(label_str, ITEM_LABEL_LENGTH,
|
|
"%s: %s (%s)", hfinfo->name,
|
|
oid_encoded2string(bytes, fvalue_length(&fi->value)), name);
|
|
} else {
|
|
ret = g_snprintf(label_str, ITEM_LABEL_LENGTH,
|
|
"%s: %s", hfinfo->name,
|
|
oid_encoded2string(bytes, fvalue_length(&fi->value)));
|
|
}
|
|
if ((ret == -1) || (ret >= ITEM_LABEL_LENGTH))
|
|
label_str[ITEM_LABEL_LENGTH - 1] = '\0';
|
|
break;
|
|
|
|
case FT_STRING:
|
|
case FT_STRINGZ:
|
|
case FT_EBCDIC:
|
|
case FT_UINT_STRING:
|
|
bytes = fvalue_get(&fi->value);
|
|
if(strlen(bytes) > ITEM_LABEL_LENGTH) {
|
|
/* Uh oh, we don't have enough room. Tell the
|
|
* user that the field is truncated.
|
|
*/
|
|
ret = g_snprintf(label_str, ITEM_LABEL_LENGTH,
|
|
"%s [truncated]: %s",
|
|
hfinfo->name,
|
|
format_text(bytes, strlen(bytes)));
|
|
} else {
|
|
ret = g_snprintf(label_str, ITEM_LABEL_LENGTH,
|
|
"%s: %s", hfinfo->name,
|
|
format_text(bytes, strlen(bytes)));
|
|
}
|
|
if ((ret == -1) || (ret >= ITEM_LABEL_LENGTH))
|
|
label_str[ITEM_LABEL_LENGTH - 1] = '\0';
|
|
break;
|
|
|
|
default:
|
|
g_error("hfinfo->type %d (%s) not handled\n",
|
|
hfinfo->type,
|
|
ftype_name(hfinfo->type));
|
|
DISSECTOR_ASSERT_NOT_REACHED();
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
fill_label_boolean(field_info *fi, gchar *label_str)
|
|
{
|
|
char *p = label_str;
|
|
int bitfield_byte_length = 0, bitwidth;
|
|
guint32 unshifted_value;
|
|
guint32 value;
|
|
int ret; /*tmp return value */
|
|
|
|
header_field_info *hfinfo = fi->hfinfo;
|
|
const true_false_string *tfstring = &tfs_true_false;
|
|
|
|
if (hfinfo->strings) {
|
|
tfstring = (const struct true_false_string*) hfinfo->strings;
|
|
}
|
|
|
|
value = fvalue_get_uinteger(&fi->value);
|
|
if (hfinfo->bitmask) {
|
|
/* Figure out the bit width */
|
|
bitwidth = hfinfo_bitwidth(hfinfo);
|
|
|
|
/* Un-shift bits */
|
|
unshifted_value = value;
|
|
if (hfinfo->bitshift > 0) {
|
|
unshifted_value <<= hfinfo->bitshift;
|
|
}
|
|
|
|
/* Create the bitfield first */
|
|
p = decode_bitfield_value(label_str, unshifted_value, hfinfo->bitmask, bitwidth);
|
|
bitfield_byte_length = p - label_str;
|
|
}
|
|
|
|
/* Fill in the textual info */
|
|
ret = g_snprintf(p, ITEM_LABEL_LENGTH - bitfield_byte_length,
|
|
"%s: %s", hfinfo->name,
|
|
value ? tfstring->true_string : tfstring->false_string);
|
|
if ((ret == -1) || (ret >= (ITEM_LABEL_LENGTH - bitfield_byte_length)))
|
|
label_str[ITEM_LABEL_LENGTH - 1] = '\0';
|
|
}
|
|
|
|
|
|
/* Fills data for bitfield ints with val_strings */
|
|
static void
|
|
fill_label_bitfield(field_info *fi, gchar *label_str)
|
|
{
|
|
const char *format = NULL;
|
|
char *p;
|
|
int bitfield_byte_length, bitwidth;
|
|
guint32 unshifted_value;
|
|
guint32 value;
|
|
int ret; /*tmp return value */
|
|
|
|
header_field_info *hfinfo = fi->hfinfo;
|
|
|
|
/* Figure out the bit width */
|
|
bitwidth = hfinfo_bitwidth(hfinfo);
|
|
|
|
/* Un-shift bits */
|
|
unshifted_value = fvalue_get_uinteger(&fi->value);
|
|
value = unshifted_value;
|
|
if (hfinfo->bitshift > 0) {
|
|
unshifted_value <<= hfinfo->bitshift;
|
|
}
|
|
|
|
/* Create the bitfield first */
|
|
p = decode_bitfield_value(label_str, unshifted_value, hfinfo->bitmask, bitwidth);
|
|
bitfield_byte_length = p - label_str;
|
|
|
|
/* Fill in the textual info using stored (shifted) value */
|
|
if (hfinfo->display == BASE_CUSTOM) {
|
|
gchar tmp[ITEM_LABEL_LENGTH];
|
|
custom_fmt_func_t fmtfunc = (custom_fmt_func_t)hfinfo->strings;
|
|
|
|
DISSECTOR_ASSERT(fmtfunc);
|
|
fmtfunc(tmp, value);
|
|
ret = g_snprintf(p, ITEM_LABEL_LENGTH - bitfield_byte_length,
|
|
"%s: %s", hfinfo->name, tmp);
|
|
}
|
|
else if (hfinfo->strings) {
|
|
format = hfinfo_uint_vals_format(hfinfo);
|
|
ret = g_snprintf(p, ITEM_LABEL_LENGTH - bitfield_byte_length,
|
|
format, hfinfo->name,
|
|
val_to_str(value, cVALS(hfinfo->strings), "Unknown"), value);
|
|
}
|
|
else {
|
|
format = hfinfo_uint_format(hfinfo);
|
|
if (IS_BASE_DUAL(hfinfo->display)) {
|
|
ret = g_snprintf(p, ITEM_LABEL_LENGTH - bitfield_byte_length,
|
|
format, hfinfo->name, value, value);
|
|
} else {
|
|
ret = g_snprintf(p, ITEM_LABEL_LENGTH - bitfield_byte_length,
|
|
format, hfinfo->name, value);
|
|
}
|
|
}
|
|
if ((ret == -1) || (ret >= (ITEM_LABEL_LENGTH - bitfield_byte_length)))
|
|
label_str[ITEM_LABEL_LENGTH - 1] = '\0';
|
|
}
|
|
|
|
static void
|
|
fill_label_uint(field_info *fi, gchar *label_str)
|
|
{
|
|
const char *format = NULL;
|
|
header_field_info *hfinfo = fi->hfinfo;
|
|
guint32 value;
|
|
int ret; /*tmp return value */
|
|
|
|
value = fvalue_get_uinteger(&fi->value);
|
|
|
|
/* Fill in the textual info */
|
|
if (hfinfo->display == BASE_CUSTOM) {
|
|
gchar tmp[ITEM_LABEL_LENGTH];
|
|
custom_fmt_func_t fmtfunc = (custom_fmt_func_t)hfinfo->strings;
|
|
|
|
DISSECTOR_ASSERT(fmtfunc);
|
|
fmtfunc(tmp, value);
|
|
ret = g_snprintf(label_str, ITEM_LABEL_LENGTH, "%s: %s", hfinfo->name, tmp);
|
|
}
|
|
else if (hfinfo->strings) {
|
|
format = hfinfo_uint_vals_format(hfinfo);
|
|
ret = g_snprintf(label_str, ITEM_LABEL_LENGTH,
|
|
format, hfinfo->name,
|
|
val_to_str(value, cVALS(hfinfo->strings), "Unknown"), value);
|
|
}
|
|
else {
|
|
format = hfinfo_uint_format(hfinfo);
|
|
if (IS_BASE_DUAL(hfinfo->display)) {
|
|
ret = g_snprintf(label_str, ITEM_LABEL_LENGTH,
|
|
format, hfinfo->name, value, value);
|
|
} else {
|
|
ret = g_snprintf(label_str, ITEM_LABEL_LENGTH,
|
|
format, hfinfo->name, value);
|
|
}
|
|
}
|
|
if ((ret == -1) || (ret >= ITEM_LABEL_LENGTH))
|
|
label_str[ITEM_LABEL_LENGTH - 1] = '\0';
|
|
}
|
|
|
|
static void
|
|
fill_label_uint64(field_info *fi, gchar *label_str)
|
|
{
|
|
const char *format = NULL;
|
|
header_field_info *hfinfo = fi->hfinfo;
|
|
guint64 value;
|
|
int ret; /*tmp return value */
|
|
|
|
/* Pick the proper format string */
|
|
format = hfinfo_uint64_format(hfinfo);
|
|
value = fvalue_get_integer64(&fi->value);
|
|
|
|
/* Fill in the textual info */
|
|
if (IS_BASE_DUAL(hfinfo->display)) {
|
|
ret = g_snprintf(label_str, ITEM_LABEL_LENGTH,
|
|
format, hfinfo->name, value, value);
|
|
} else {
|
|
ret = g_snprintf(label_str, ITEM_LABEL_LENGTH,
|
|
format, hfinfo->name, value);
|
|
}
|
|
if ((ret == -1) || (ret >= ITEM_LABEL_LENGTH))
|
|
label_str[ITEM_LABEL_LENGTH - 1] = '\0';
|
|
}
|
|
|
|
static void
|
|
fill_label_int(field_info *fi, gchar *label_str)
|
|
{
|
|
const char *format = NULL;
|
|
header_field_info *hfinfo = fi->hfinfo;
|
|
guint32 value;
|
|
int ret; /*tmp return value */
|
|
|
|
value = fvalue_get_sinteger(&fi->value);
|
|
|
|
/* Fill in the textual info */
|
|
if (hfinfo->display == BASE_CUSTOM) {
|
|
gchar tmp[ITEM_LABEL_LENGTH];
|
|
custom_fmt_func_t fmtfunc = (custom_fmt_func_t)hfinfo->strings;
|
|
|
|
DISSECTOR_ASSERT(fmtfunc);
|
|
fmtfunc(tmp, value);
|
|
ret = g_snprintf(label_str, ITEM_LABEL_LENGTH, "%s: %s", hfinfo->name, tmp);
|
|
}
|
|
else if (hfinfo->strings) {
|
|
format = hfinfo_int_vals_format(hfinfo);
|
|
ret = g_snprintf(label_str, ITEM_LABEL_LENGTH,
|
|
format, hfinfo->name,
|
|
val_to_str(value, cVALS(hfinfo->strings), "Unknown"), value);
|
|
}
|
|
else {
|
|
format = hfinfo_int_format(hfinfo);
|
|
if (IS_BASE_DUAL(hfinfo->display)) {
|
|
ret = g_snprintf(label_str, ITEM_LABEL_LENGTH,
|
|
format, hfinfo->name, value, value);
|
|
} else {
|
|
ret = g_snprintf(label_str, ITEM_LABEL_LENGTH,
|
|
format, hfinfo->name, value);
|
|
}
|
|
}
|
|
if ((ret == -1) || (ret >= ITEM_LABEL_LENGTH))
|
|
label_str[ITEM_LABEL_LENGTH - 1] = '\0';
|
|
}
|
|
|
|
static void
|
|
fill_label_int64(field_info *fi, gchar *label_str)
|
|
{
|
|
const char *format = NULL;
|
|
header_field_info *hfinfo = fi->hfinfo;
|
|
guint64 value;
|
|
int ret; /*tmp return value */
|
|
|
|
/* Pick the proper format string */
|
|
format = hfinfo_int64_format(hfinfo);
|
|
value = fvalue_get_integer64(&fi->value);
|
|
|
|
/* Fill in the textual info */
|
|
if (IS_BASE_DUAL(hfinfo->display)) {
|
|
ret = g_snprintf(label_str, ITEM_LABEL_LENGTH,
|
|
format, hfinfo->name, value, value);
|
|
} else {
|
|
ret = g_snprintf(label_str, ITEM_LABEL_LENGTH,
|
|
format, hfinfo->name, value);
|
|
}
|
|
if ((ret == -1) || (ret >= ITEM_LABEL_LENGTH))
|
|
label_str[ITEM_LABEL_LENGTH - 1] = '\0';
|
|
}
|
|
|
|
int
|
|
hfinfo_bitwidth(header_field_info *hfinfo)
|
|
{
|
|
int bitwidth = 0;
|
|
|
|
if (!hfinfo->bitmask) {
|
|
return 0;
|
|
}
|
|
|
|
switch(hfinfo->type) {
|
|
case FT_UINT8:
|
|
case FT_INT8:
|
|
bitwidth = 8;
|
|
break;
|
|
case FT_UINT16:
|
|
case FT_INT16:
|
|
bitwidth = 16;
|
|
break;
|
|
case FT_UINT24:
|
|
case FT_INT24:
|
|
bitwidth = 24;
|
|
break;
|
|
case FT_UINT32:
|
|
case FT_INT32:
|
|
bitwidth = 32;
|
|
break;
|
|
case FT_BOOLEAN:
|
|
bitwidth = hfinfo->display; /* hacky? :) */
|
|
break;
|
|
default:
|
|
DISSECTOR_ASSERT_NOT_REACHED();
|
|
;
|
|
}
|
|
return bitwidth;
|
|
}
|
|
|
|
static const char*
|
|
hfinfo_uint_vals_format(header_field_info *hfinfo)
|
|
{
|
|
const char *format = NULL;
|
|
|
|
/* bit operation to reset the potential BASE_RANGE_STRING (or others in
|
|
* the future?) */
|
|
switch(hfinfo->display & BASE_STRUCTURE_RESET) {
|
|
case BASE_DEC:
|
|
case BASE_DEC_HEX:
|
|
format = "%s: %s (%u)";
|
|
break;
|
|
case BASE_OCT: /* I'm lazy */
|
|
format = "%s: %s (%o)";
|
|
break;
|
|
case BASE_HEX:
|
|
case BASE_HEX_DEC:
|
|
switch(hfinfo->type) {
|
|
case FT_UINT8:
|
|
format = "%s: %s (0x%02x)";
|
|
break;
|
|
case FT_UINT16:
|
|
format = "%s: %s (0x%04x)";
|
|
break;
|
|
case FT_UINT24:
|
|
format = "%s: %s (0x%06x)";
|
|
break;
|
|
case FT_UINT32:
|
|
format = "%s: %s (0x%08x)";
|
|
break;
|
|
default:
|
|
DISSECTOR_ASSERT_NOT_REACHED();
|
|
;
|
|
}
|
|
break;
|
|
default:
|
|
DISSECTOR_ASSERT_NOT_REACHED();
|
|
;
|
|
}
|
|
return format;
|
|
}
|
|
|
|
static const char*
|
|
hfinfo_uint_format(header_field_info *hfinfo)
|
|
{
|
|
const char *format = NULL;
|
|
|
|
/* Pick the proper format string */
|
|
if (hfinfo->type == FT_FRAMENUM) {
|
|
/*
|
|
* Frame numbers are always displayed in decimal.
|
|
*/
|
|
format = "%s: %u";
|
|
} else {
|
|
switch(hfinfo->display) {
|
|
case BASE_DEC:
|
|
format = "%s: %u";
|
|
break;
|
|
case BASE_DEC_HEX:
|
|
switch(hfinfo->type) {
|
|
case FT_UINT8:
|
|
format = "%s: %u (0x%02x)";
|
|
break;
|
|
case FT_UINT16:
|
|
format = "%s: %u (0x%04x)";
|
|
break;
|
|
case FT_UINT24:
|
|
format = "%s: %u (0x%06x)";
|
|
break;
|
|
case FT_UINT32:
|
|
format = "%s: %u (0x%08x)";
|
|
break;
|
|
default:
|
|
DISSECTOR_ASSERT_NOT_REACHED();
|
|
;
|
|
}
|
|
break;
|
|
case BASE_OCT: /* I'm lazy */
|
|
format = "%s: %o";
|
|
break;
|
|
case BASE_HEX:
|
|
switch(hfinfo->type) {
|
|
case FT_UINT8:
|
|
format = "%s: 0x%02x";
|
|
break;
|
|
case FT_UINT16:
|
|
format = "%s: 0x%04x";
|
|
break;
|
|
case FT_UINT24:
|
|
format = "%s: 0x%06x";
|
|
break;
|
|
case FT_UINT32:
|
|
format = "%s: 0x%08x";
|
|
break;
|
|
default:
|
|
DISSECTOR_ASSERT_NOT_REACHED();
|
|
;
|
|
}
|
|
break;
|
|
case BASE_HEX_DEC:
|
|
switch(hfinfo->type) {
|
|
case FT_UINT8:
|
|
format = "%s: 0x%02x (%u)";
|
|
break;
|
|
case FT_UINT16:
|
|
format = "%s: 0x%04x (%u)";
|
|
break;
|
|
case FT_UINT24:
|
|
format = "%s: 0x%06x (%u)";
|
|
break;
|
|
case FT_UINT32:
|
|
format = "%s: 0x%08x (%u)";
|
|
break;
|
|
default:
|
|
DISSECTOR_ASSERT_NOT_REACHED();
|
|
;
|
|
}
|
|
break;
|
|
default:
|
|
DISSECTOR_ASSERT_NOT_REACHED();
|
|
;
|
|
}
|
|
}
|
|
return format;
|
|
}
|
|
|
|
static const char*
|
|
hfinfo_uint_value_format(header_field_info *hfinfo)
|
|
{
|
|
const char *format = NULL;
|
|
|
|
/* Pick the proper format string */
|
|
if (hfinfo->type == FT_FRAMENUM) {
|
|
/*
|
|
* Frame numbers are always displayed in decimal.
|
|
*/
|
|
format = "%u";
|
|
} else {
|
|
switch(hfinfo->display) {
|
|
case BASE_DEC:
|
|
format = "%u";
|
|
break;
|
|
case BASE_DEC_HEX:
|
|
switch(hfinfo->type) {
|
|
case FT_UINT8:
|
|
format = "%u (0x%02x)";
|
|
break;
|
|
case FT_UINT16:
|
|
format = "%u (0x%04x)";
|
|
break;
|
|
case FT_UINT24:
|
|
format = "%u (0x%06x)";
|
|
break;
|
|
case FT_UINT32:
|
|
format = "%u (0x%08x)";
|
|
break;
|
|
default:
|
|
DISSECTOR_ASSERT_NOT_REACHED();
|
|
;
|
|
}
|
|
break;
|
|
case BASE_OCT:
|
|
format = "%o";
|
|
break;
|
|
case BASE_HEX:
|
|
switch(hfinfo->type) {
|
|
case FT_UINT8:
|
|
format = "0x%02x";
|
|
break;
|
|
case FT_UINT16:
|
|
format = "0x%04x";
|
|
break;
|
|
case FT_UINT24:
|
|
format = "0x%06x";
|
|
break;
|
|
case FT_UINT32:
|
|
format = "0x%08x";
|
|
break;
|
|
default:
|
|
DISSECTOR_ASSERT_NOT_REACHED();
|
|
;
|
|
}
|
|
break;
|
|
case BASE_HEX_DEC:
|
|
switch(hfinfo->type) {
|
|
case FT_UINT8:
|
|
format = "0x%02x (%u)";
|
|
break;
|
|
case FT_UINT16:
|
|
format = "0x%04x (%u)";
|
|
break;
|
|
case FT_UINT24:
|
|
format = "0x%06x (%u)";
|
|
break;
|
|
case FT_UINT32:
|
|
format = "0x%08x (%u)";
|
|
break;
|
|
default:
|
|
DISSECTOR_ASSERT_NOT_REACHED();
|
|
;
|
|
}
|
|
break;
|
|
default:
|
|
DISSECTOR_ASSERT_NOT_REACHED();
|
|
;
|
|
}
|
|
}
|
|
return format;
|
|
}
|
|
|
|
static const char*
|
|
hfinfo_int_vals_format(header_field_info *hfinfo)
|
|
{
|
|
const char *format = NULL;
|
|
|
|
/* bit operation to reset the potential BASE_RANGE_STRING (or others in
|
|
* the future?)*/
|
|
switch(hfinfo->display & BASE_STRUCTURE_RESET) {
|
|
case BASE_DEC:
|
|
case BASE_DEC_HEX:
|
|
format = "%s: %s (%d)";
|
|
break;
|
|
case BASE_OCT: /* I'm lazy */
|
|
format = "%s: %s (%o)";
|
|
break;
|
|
case BASE_HEX:
|
|
case BASE_HEX_DEC:
|
|
switch(hfinfo->type) {
|
|
case FT_INT8:
|
|
format = "%s: %s (0x%02x)";
|
|
break;
|
|
case FT_INT16:
|
|
format = "%s: %s (0x%04x)";
|
|
break;
|
|
case FT_INT24:
|
|
format = "%s: %s (0x%06x)";
|
|
break;
|
|
case FT_INT32:
|
|
format = "%s: %s (0x%08x)";
|
|
break;
|
|
default:
|
|
DISSECTOR_ASSERT_NOT_REACHED();
|
|
;
|
|
}
|
|
break;
|
|
default:
|
|
DISSECTOR_ASSERT_NOT_REACHED();
|
|
;
|
|
}
|
|
return format;
|
|
}
|
|
|
|
static const char*
|
|
hfinfo_uint64_format(header_field_info *hfinfo)
|
|
{
|
|
const char *format = NULL;
|
|
|
|
/* Pick the proper format string */
|
|
switch(hfinfo->display) {
|
|
case BASE_DEC:
|
|
format = "%s: %" G_GINT64_MODIFIER "u";
|
|
break;
|
|
case BASE_DEC_HEX:
|
|
format = "%s: %" G_GINT64_MODIFIER "u (%" G_GINT64_MODIFIER "x)";
|
|
break;
|
|
case BASE_OCT: /* I'm lazy */
|
|
format = "%s: %" G_GINT64_MODIFIER "o";
|
|
break;
|
|
case BASE_HEX:
|
|
format = "%s: 0x%016" G_GINT64_MODIFIER "x";
|
|
break;
|
|
case BASE_HEX_DEC:
|
|
format = "%s: 0x%016" G_GINT64_MODIFIER "x (%" G_GINT64_MODIFIER "u)";
|
|
break;
|
|
default:
|
|
DISSECTOR_ASSERT_NOT_REACHED();
|
|
;
|
|
}
|
|
return format;
|
|
}
|
|
|
|
static const char*
|
|
hfinfo_int_format(header_field_info *hfinfo)
|
|
{
|
|
const char *format = NULL;
|
|
|
|
/* Pick the proper format string */
|
|
switch(hfinfo->display) {
|
|
case BASE_DEC:
|
|
format = "%s: %d";
|
|
break;
|
|
case BASE_DEC_HEX:
|
|
switch(hfinfo->type) {
|
|
case FT_INT8:
|
|
format = "%s: %d (0x%02x)";
|
|
break;
|
|
case FT_INT16:
|
|
format = "%s: %d (0x%04x)";
|
|
break;
|
|
case FT_INT24:
|
|
format = "%s: %d (0x%06x)";
|
|
break;
|
|
case FT_INT32:
|
|
format = "%s: %d (0x%08x)";
|
|
break;
|
|
default:
|
|
DISSECTOR_ASSERT_NOT_REACHED();
|
|
;
|
|
}
|
|
break;
|
|
case BASE_OCT: /* I'm lazy */
|
|
format = "%s: %o";
|
|
break;
|
|
case BASE_HEX:
|
|
switch(hfinfo->type) {
|
|
case FT_INT8:
|
|
format = "%s: 0x%02x";
|
|
break;
|
|
case FT_INT16:
|
|
format = "%s: 0x%04x";
|
|
break;
|
|
case FT_INT24:
|
|
format = "%s: 0x%06x";
|
|
break;
|
|
case FT_INT32:
|
|
format = "%s: 0x%08x";
|
|
break;
|
|
default:
|
|
DISSECTOR_ASSERT_NOT_REACHED();
|
|
;
|
|
}
|
|
break;
|
|
case BASE_HEX_DEC:
|
|
switch(hfinfo->type) {
|
|
case FT_INT8:
|
|
format = "%s: 0x%02x (%d)";
|
|
break;
|
|
case FT_INT16:
|
|
format = "%s: 0x%04x (%d)";
|
|
break;
|
|
case FT_INT24:
|
|
format = "%s: 0x%06x (%d)";
|
|
break;
|
|
case FT_INT32:
|
|
format = "%s: 0x%08x (%d)";
|
|
break;
|
|
default:
|
|
DISSECTOR_ASSERT_NOT_REACHED();
|
|
;
|
|
}
|
|
break;
|
|
default:
|
|
DISSECTOR_ASSERT_NOT_REACHED();
|
|
;
|
|
}
|
|
return format;
|
|
}
|
|
|
|
static const char*
|
|
hfinfo_int_value_format(header_field_info *hfinfo)
|
|
{
|
|
const char *format = NULL;
|
|
|
|
/* Pick the proper format string */
|
|
switch(hfinfo->display) {
|
|
case BASE_DEC:
|
|
format = "%d";
|
|
break;
|
|
case BASE_DEC_HEX:
|
|
switch(hfinfo->type) {
|
|
case FT_INT8:
|
|
format = "%d (0x%02x)";
|
|
break;
|
|
case FT_INT16:
|
|
format = "%d (0x%04x)";
|
|
break;
|
|
case FT_INT24:
|
|
format = "%d (0x%06x)";
|
|
break;
|
|
case FT_INT32:
|
|
format = "%d (0x%08x)";
|
|
break;
|
|
default:
|
|
DISSECTOR_ASSERT_NOT_REACHED();
|
|
;
|
|
}
|
|
break;
|
|
case BASE_OCT:
|
|
format = "%o";
|
|
break;
|
|
case BASE_HEX:
|
|
switch(hfinfo->type) {
|
|
case FT_INT8:
|
|
format = "0x%02x";
|
|
break;
|
|
case FT_INT16:
|
|
format = "0x%04x";
|
|
break;
|
|
case FT_INT24:
|
|
format = "0x%06x";
|
|
break;
|
|
case FT_INT32:
|
|
format = "0x%08x";
|
|
break;
|
|
default:
|
|
DISSECTOR_ASSERT_NOT_REACHED();
|
|
;
|
|
}
|
|
break;
|
|
case BASE_HEX_DEC:
|
|
switch(hfinfo->type) {
|
|
case FT_INT8:
|
|
format = "0x%02x (%d)";
|
|
break;
|
|
case FT_INT16:
|
|
format = "0x%04x (%d)";
|
|
break;
|
|
case FT_INT24:
|
|
format = "0x%06x (%d)";
|
|
break;
|
|
case FT_INT32:
|
|
format = "0x%08x (%d)";
|
|
break;
|
|
default:
|
|
DISSECTOR_ASSERT_NOT_REACHED();
|
|
;
|
|
}
|
|
break;
|
|
default:
|
|
DISSECTOR_ASSERT_NOT_REACHED();
|
|
;
|
|
}
|
|
return format;
|
|
}
|
|
|
|
static const char*
|
|
hfinfo_int64_format(header_field_info *hfinfo)
|
|
{
|
|
const char *format = NULL;
|
|
|
|
/* Pick the proper format string */
|
|
switch(hfinfo->display) {
|
|
case BASE_DEC:
|
|
format = "%s: %" G_GINT64_MODIFIER "d";
|
|
break;
|
|
case BASE_DEC_HEX:
|
|
format = "%s: %" G_GINT64_MODIFIER "d (%" G_GINT64_MODIFIER "x)";
|
|
break;
|
|
case BASE_OCT: /* I'm lazy */
|
|
format = "%s: %" G_GINT64_MODIFIER "o";
|
|
break;
|
|
case BASE_HEX:
|
|
format = "%s: 0x%016" G_GINT64_MODIFIER "x";
|
|
break;
|
|
case BASE_HEX_DEC:
|
|
format = "%s: 0x%016" G_GINT64_MODIFIER "x (%" G_GINT64_MODIFIER "d)";
|
|
break;
|
|
default:
|
|
DISSECTOR_ASSERT_NOT_REACHED();
|
|
;
|
|
}
|
|
return format;
|
|
}
|
|
|
|
|
|
|
|
int
|
|
proto_registrar_n(void)
|
|
{
|
|
return gpa_hfinfo.len;
|
|
}
|
|
|
|
const char*
|
|
proto_registrar_get_name(int n)
|
|
{
|
|
header_field_info *hfinfo;
|
|
|
|
PROTO_REGISTRAR_GET_NTH(n, hfinfo);
|
|
return hfinfo->name;
|
|
}
|
|
|
|
const char*
|
|
proto_registrar_get_abbrev(int n)
|
|
{
|
|
header_field_info *hfinfo;
|
|
|
|
PROTO_REGISTRAR_GET_NTH(n, hfinfo);
|
|
return hfinfo->abbrev;
|
|
}
|
|
|
|
int
|
|
proto_registrar_get_ftype(int n)
|
|
{
|
|
header_field_info *hfinfo;
|
|
|
|
PROTO_REGISTRAR_GET_NTH(n, hfinfo);
|
|
return hfinfo->type;
|
|
}
|
|
|
|
int
|
|
proto_registrar_get_parent(int n)
|
|
{
|
|
header_field_info *hfinfo;
|
|
|
|
PROTO_REGISTRAR_GET_NTH(n, hfinfo);
|
|
return hfinfo->parent;
|
|
}
|
|
|
|
gboolean
|
|
proto_registrar_is_protocol(int n)
|
|
{
|
|
header_field_info *hfinfo;
|
|
|
|
PROTO_REGISTRAR_GET_NTH(n, hfinfo);
|
|
return (hfinfo->parent == -1 ? TRUE : FALSE);
|
|
}
|
|
|
|
/* Returns length of field in packet (not necessarily the length
|
|
* in our internal representation, as in the case of IPv4).
|
|
* 0 means undeterminable at time of registration
|
|
* -1 means the field is not registered. */
|
|
gint
|
|
proto_registrar_get_length(int n)
|
|
{
|
|
header_field_info *hfinfo;
|
|
|
|
PROTO_REGISTRAR_GET_NTH(n, hfinfo);
|
|
return ftype_length(hfinfo->type);
|
|
}
|
|
|
|
|
|
|
|
/* Looks for a protocol or a field in a proto_tree. Returns TRUE if
|
|
* it exists anywhere, or FALSE if it exists nowhere. */
|
|
gboolean
|
|
proto_check_for_protocol_or_field(proto_tree* tree, int id)
|
|
{
|
|
GPtrArray *ptrs = proto_get_finfo_ptr_array(tree, id);
|
|
|
|
if (!ptrs) {
|
|
return FALSE;
|
|
}
|
|
else if (g_ptr_array_len(ptrs) > 0) {
|
|
return TRUE;
|
|
}
|
|
else {
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
/* Return GPtrArray* of field_info pointers for all hfindex that appear in tree.
|
|
* This only works if the hfindex was "primed" before the dissection
|
|
* took place, as we just pass back the already-created GPtrArray*.
|
|
* The caller should *not* free the GPtrArray*; proto_tree_free_node()
|
|
* handles that. */
|
|
GPtrArray*
|
|
proto_get_finfo_ptr_array(proto_tree *tree, int id)
|
|
{
|
|
return g_hash_table_lookup(PTREE_DATA(tree)->interesting_hfids,
|
|
GINT_TO_POINTER(id));
|
|
}
|
|
|
|
|
|
/* Helper struct for proto_find_info() and proto_all_finfos() */
|
|
typedef struct {
|
|
GPtrArray *array;
|
|
int id;
|
|
} ffdata_t;
|
|
|
|
/* Helper function for proto_find_info() */
|
|
static gboolean
|
|
find_finfo(proto_node *node, gpointer data)
|
|
{
|
|
field_info *fi = PITEM_FINFO(node);
|
|
if (fi && fi->hfinfo) {
|
|
if (fi->hfinfo->id == ((ffdata_t*)data)->id) {
|
|
g_ptr_array_add(((ffdata_t*)data)->array, fi);
|
|
}
|
|
}
|
|
|
|
/* Don't stop traversing. */
|
|
return FALSE;
|
|
}
|
|
|
|
/* Return GPtrArray* of field_info pointers for all hfindex that appear in a tree.
|
|
* This works on any proto_tree, primed or unprimed, but actually searches
|
|
* the tree, so it is slower than using proto_get_finfo_ptr_array on a primed tree.
|
|
* The caller does need to free the returned GPtrArray with
|
|
* g_ptr_array_free(<array>, FALSE).
|
|
*/
|
|
GPtrArray*
|
|
proto_find_finfo(proto_tree *tree, int id)
|
|
{
|
|
ffdata_t ffdata;
|
|
|
|
ffdata.array = g_ptr_array_new();
|
|
ffdata.id = id;
|
|
|
|
proto_tree_traverse_pre_order(tree, find_finfo, &ffdata);
|
|
|
|
return ffdata.array;
|
|
}
|
|
|
|
/* Helper function for proto_all_finfos() */
|
|
static gboolean
|
|
every_finfo(proto_node *node, gpointer data)
|
|
{
|
|
field_info *fi = PITEM_FINFO(node);
|
|
if (fi && fi->hfinfo) {
|
|
g_ptr_array_add(((ffdata_t*)data)->array, fi);
|
|
}
|
|
|
|
/* Don't stop traversing. */
|
|
return FALSE;
|
|
}
|
|
|
|
/* Return GPtrArray* of field_info pointers containing all hfindexes that appear in a tree. */
|
|
GPtrArray*
|
|
proto_all_finfos(proto_tree *tree)
|
|
{
|
|
ffdata_t ffdata;
|
|
|
|
ffdata.array = g_ptr_array_new();
|
|
ffdata.id = 0;
|
|
|
|
proto_tree_traverse_pre_order(tree, every_finfo, &ffdata);
|
|
|
|
return ffdata.array;
|
|
}
|
|
|
|
|
|
typedef struct {
|
|
guint offset;
|
|
field_info *finfo;
|
|
tvbuff_t *tvb;
|
|
} offset_search_t;
|
|
|
|
static gboolean
|
|
check_for_offset(proto_node *node, gpointer data)
|
|
{
|
|
field_info *fi = PITEM_FINFO(node);
|
|
offset_search_t *offsearch = data;
|
|
|
|
/* !fi == the top most container node which holds nothing */
|
|
if (fi && !PROTO_ITEM_IS_HIDDEN(node) && fi->ds_tvb && offsearch->tvb == fi->ds_tvb) {
|
|
if (offsearch->offset >= (guint) fi->start &&
|
|
offsearch->offset < (guint) (fi->start + fi->length)) {
|
|
|
|
offsearch->finfo = fi;
|
|
return FALSE; /* keep traversing */
|
|
}
|
|
}
|
|
return FALSE; /* keep traversing */
|
|
}
|
|
|
|
/* Search a proto_tree backwards (from leaves to root) looking for the field
|
|
* whose start/length occupies 'offset' */
|
|
/* XXX - I couldn't find an easy way to search backwards, so I search
|
|
* forwards, w/o stopping. Therefore, the last finfo I find will the be
|
|
* the one I want to return to the user. This algorithm is inefficient
|
|
* and could be re-done, but I'd have to handle all the children and
|
|
* siblings of each node myself. When I have more time I'll do that.
|
|
* (yeah right) */
|
|
field_info*
|
|
proto_find_field_from_offset(proto_tree *tree, guint offset, tvbuff_t *tvb)
|
|
{
|
|
offset_search_t offsearch;
|
|
|
|
offsearch.offset = offset;
|
|
offsearch.finfo = NULL;
|
|
offsearch.tvb = tvb;
|
|
|
|
proto_tree_traverse_pre_order(tree, check_for_offset, &offsearch);
|
|
|
|
return offsearch.finfo;
|
|
}
|
|
|
|
/* Dumps the protocols in the registration database to stdout. An independent
|
|
* program can take this output and format it into nice tables or HTML or
|
|
* whatever.
|
|
*
|
|
* There is one record per line. The fields are tab-delimited.
|
|
*
|
|
* Field 1 = protocol name
|
|
* Field 2 = protocol short name
|
|
* Field 3 = protocol filter name
|
|
*/
|
|
void
|
|
proto_registrar_dump_protocols(void)
|
|
{
|
|
protocol_t *protocol;
|
|
int i;
|
|
void *cookie = NULL;
|
|
|
|
for (i = proto_get_first_protocol(&cookie); i != -1;
|
|
i = proto_get_next_protocol(&cookie)) {
|
|
protocol = find_protocol_by_id(i);
|
|
printf("%s\t%s\t%s\n", protocol->name, protocol->short_name,
|
|
protocol->filter_name);
|
|
}
|
|
}
|
|
|
|
/* Dumps the value_string and true/false strings for fields that have
|
|
* them. There is one record per line. Fields are tab-delimited.
|
|
* There are two types of records, Value String records and True/False
|
|
* String records. The first field, 'V' or 'T', indicates the type
|
|
* of record.
|
|
*
|
|
* Value Strings
|
|
* -------------
|
|
* Field 1 = 'V'
|
|
* Field 2 = field abbreviation to which this value string corresponds
|
|
* Field 3 = Integer value
|
|
* Field 4 = String
|
|
*
|
|
* True/False Strings
|
|
* ------------------
|
|
* Field 1 = 'T'
|
|
* Field 2 = field abbreviation to which this true/false string corresponds
|
|
* Field 3 = True String
|
|
* Field 4 = False String
|
|
*/
|
|
void
|
|
proto_registrar_dump_values(void)
|
|
{
|
|
header_field_info *hfinfo, *parent_hfinfo;
|
|
int i, len, vi;
|
|
const value_string *vals;
|
|
const true_false_string *tfs;
|
|
|
|
len = gpa_hfinfo.len;
|
|
for (i = 0; i < len ; i++) {
|
|
PROTO_REGISTRAR_GET_NTH(i, hfinfo);
|
|
|
|
if (hfinfo->id == hf_text_only) {
|
|
continue;
|
|
}
|
|
|
|
/* ignore protocols */
|
|
if (proto_registrar_is_protocol(i)) {
|
|
continue;
|
|
}
|
|
/* process header fields */
|
|
else {
|
|
/*
|
|
* If this field isn't at the head of the list of
|
|
* fields with this name, skip this field - all
|
|
* fields with the same name are really just versions
|
|
* of the same field stored in different bits, and
|
|
* should have the same type/radix/value list, and
|
|
* just differ in their bit masks. (If a field isn't
|
|
* a bitfield, but can be, say, 1 or 2 bytes long,
|
|
* it can just be made FT_UINT16, meaning the
|
|
* *maximum* length is 2 bytes, and be used
|
|
* for all lengths.)
|
|
*/
|
|
if (hfinfo->same_name_prev != NULL)
|
|
continue;
|
|
|
|
PROTO_REGISTRAR_GET_NTH(hfinfo->parent, parent_hfinfo);
|
|
|
|
vals = NULL;
|
|
tfs = NULL;
|
|
|
|
if (hfinfo->display != BASE_CUSTOM &&
|
|
(hfinfo->type == FT_UINT8 ||
|
|
hfinfo->type == FT_UINT16 ||
|
|
hfinfo->type == FT_UINT24 ||
|
|
hfinfo->type == FT_UINT32 ||
|
|
hfinfo->type == FT_UINT64 ||
|
|
hfinfo->type == FT_INT8 ||
|
|
hfinfo->type == FT_INT16 ||
|
|
hfinfo->type == FT_INT24 ||
|
|
hfinfo->type == FT_INT32 ||
|
|
hfinfo->type == FT_INT64)) {
|
|
|
|
vals = hfinfo->strings;
|
|
}
|
|
else if (hfinfo->type == FT_BOOLEAN) {
|
|
tfs = hfinfo->strings;
|
|
}
|
|
|
|
/* Print value strings? */
|
|
if (vals) {
|
|
vi = 0;
|
|
while (vals[vi].strptr) {
|
|
/* Print in the proper base */
|
|
if (hfinfo->display == BASE_HEX) {
|
|
printf("V\t%s\t0x%x\t%s\n",
|
|
hfinfo->abbrev,
|
|
vals[vi].value,
|
|
vals[vi].strptr);
|
|
}
|
|
else {
|
|
printf("V\t%s\t%u\t%s\n",
|
|
hfinfo->abbrev,
|
|
vals[vi].value,
|
|
vals[vi].strptr);
|
|
}
|
|
vi++;
|
|
}
|
|
}
|
|
|
|
/* Print true/false strings? */
|
|
else if (tfs) {
|
|
printf("T\t%s\t%s\t%s\n", hfinfo->abbrev,
|
|
tfs->true_string, tfs->false_string);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Dumps the contents of the registration database to stdout. An indepedent
|
|
* program can take this output and format it into nice tables or HTML or
|
|
* whatever.
|
|
*
|
|
* There is one record per line. Each record is either a protocol or a header
|
|
* field, differentiated by the first field. The fields are tab-delimited.
|
|
*
|
|
* Protocols
|
|
* ---------
|
|
* Field 1 = 'P'
|
|
* Field 2 = descriptive protocol name
|
|
* Field 3 = protocol abbreviation
|
|
*
|
|
* Header Fields
|
|
* -------------
|
|
* (format 1)
|
|
* Field 1 = 'F'
|
|
* Field 2 = descriptive field name
|
|
* Field 3 = field abbreviation
|
|
* Field 4 = type ( textual representation of the the ftenum type )
|
|
* Field 5 = parent protocol abbreviation
|
|
* Field 6 = blurb describing field
|
|
*
|
|
* (format 2)
|
|
* Field 1 = 'F'
|
|
* Field 2 = descriptive field name
|
|
* Field 3 = field abbreviation
|
|
* Field 4 = type ( textual representation of the the ftenum type )
|
|
* Field 5 = parent protocol abbreviation
|
|
* Field 6 = blurb describing field
|
|
* Field 7 = base for display (for integer types)
|
|
* Field 8 = blurb describing field (yes, apparently we repeated this accidentally)
|
|
*
|
|
* (format 3)
|
|
* Field 1 = 'F'
|
|
* Field 2 = descriptive field name
|
|
* Field 3 = field abbreviation
|
|
* Field 4 = type ( textual representation of the the ftenum type )
|
|
* Field 5 = parent protocol abbreviation
|
|
* Field 6 = blurb describing field
|
|
* Field 7 = base for display (for integer types)
|
|
* Field 8 = bitmask
|
|
*/
|
|
void
|
|
proto_registrar_dump_fields(int format)
|
|
{
|
|
header_field_info *hfinfo, *parent_hfinfo;
|
|
int i, len;
|
|
const char *enum_name;
|
|
const char *base_name;
|
|
const char *blurb;
|
|
|
|
len = gpa_hfinfo.len;
|
|
for (i = 0; i < len ; i++) {
|
|
PROTO_REGISTRAR_GET_NTH(i, hfinfo);
|
|
|
|
/*
|
|
* Skip the pseudo-field for "proto_tree_add_text()" since
|
|
* we don't want it in the list of filterable fields.
|
|
*/
|
|
if (hfinfo->id == hf_text_only)
|
|
continue;
|
|
|
|
/* format for protocols */
|
|
if (proto_registrar_is_protocol(i)) {
|
|
printf("P\t%s\t%s\n", hfinfo->name, hfinfo->abbrev);
|
|
}
|
|
/* format for header fields */
|
|
else {
|
|
/*
|
|
* If this field isn't at the head of the list of
|
|
* fields with this name, skip this field - all
|
|
* fields with the same name are really just versions
|
|
* of the same field stored in different bits, and
|
|
* should have the same type/radix/value list, and
|
|
* just differ in their bit masks. (If a field isn't
|
|
* a bitfield, but can be, say, 1 or 2 bytes long,
|
|
* it can just be made FT_UINT16, meaning the
|
|
* *maximum* length is 2 bytes, and be used
|
|
* for all lengths.)
|
|
*/
|
|
if (hfinfo->same_name_prev != NULL)
|
|
continue;
|
|
|
|
PROTO_REGISTRAR_GET_NTH(hfinfo->parent, parent_hfinfo);
|
|
|
|
enum_name = ftype_name(hfinfo->type);
|
|
base_name = "";
|
|
|
|
if (format > 1) {
|
|
if (hfinfo->type == FT_UINT8 ||
|
|
hfinfo->type == FT_UINT16 ||
|
|
hfinfo->type == FT_UINT24 ||
|
|
hfinfo->type == FT_UINT32 ||
|
|
hfinfo->type == FT_UINT64 ||
|
|
hfinfo->type == FT_INT8 ||
|
|
hfinfo->type == FT_INT16 ||
|
|
hfinfo->type == FT_INT24 ||
|
|
hfinfo->type == FT_INT32 ||
|
|
hfinfo->type == FT_INT64) {
|
|
|
|
|
|
switch(hfinfo->display) {
|
|
case BASE_NONE:
|
|
base_name = "BASE_NONE";
|
|
break;
|
|
case BASE_DEC:
|
|
base_name = "BASE_DEC";
|
|
break;
|
|
case BASE_HEX:
|
|
base_name = "BASE_HEX";
|
|
break;
|
|
case BASE_OCT:
|
|
base_name = "BASE_OCT";
|
|
break;
|
|
case BASE_DEC_HEX:
|
|
base_name = "BASE_DEC_HEX";
|
|
break;
|
|
case BASE_HEX_DEC:
|
|
base_name = "BASE_HEX_DEC";
|
|
break;
|
|
case BASE_CUSTOM:
|
|
base_name = "BASE_CUSTOM";
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
blurb = hfinfo->blurb;
|
|
if (blurb == NULL)
|
|
blurb = "";
|
|
if (format == 1) {
|
|
printf("F\t%s\t%s\t%s\t%s\t%s\n",
|
|
hfinfo->name, hfinfo->abbrev, enum_name,
|
|
parent_hfinfo->abbrev, blurb);
|
|
}
|
|
else if (format == 2) {
|
|
printf("F\t%s\t%s\t%s\t%s\t%s\t%s\t%s\n",
|
|
hfinfo->name, hfinfo->abbrev, enum_name,
|
|
parent_hfinfo->abbrev, blurb,
|
|
base_name, blurb);
|
|
}
|
|
else if (format == 3) {
|
|
printf("F\t%s\t%s\t%s\t%s\t%s\t%s\t%u\n",
|
|
hfinfo->name, hfinfo->abbrev, enum_name,
|
|
parent_hfinfo->abbrev, blurb,
|
|
base_name, hfinfo->bitmask);
|
|
}
|
|
else {
|
|
g_assert_not_reached();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static const char*
|
|
hfinfo_numeric_format(header_field_info *hfinfo)
|
|
{
|
|
const char *format = NULL;
|
|
|
|
/* Pick the proper format string */
|
|
if (hfinfo->type == FT_FRAMENUM) {
|
|
/*
|
|
* Frame numbers are always displayed in decimal.
|
|
*/
|
|
format = "%s == %u";
|
|
} else {
|
|
/* Pick the proper format string, ignoring BASE_RANGE_STRING flag */
|
|
switch(hfinfo->display & ~BASE_RANGE_STRING) {
|
|
case BASE_DEC:
|
|
case BASE_DEC_HEX:
|
|
case BASE_OCT: /* I'm lazy */
|
|
case BASE_CUSTOM:
|
|
switch(hfinfo->type) {
|
|
case FT_UINT8:
|
|
case FT_UINT16:
|
|
case FT_UINT24:
|
|
case FT_UINT32:
|
|
format = "%s == %u";
|
|
break;
|
|
case FT_UINT64:
|
|
format = "%s == %" G_GINT64_MODIFIER "u";
|
|
break;
|
|
case FT_INT8:
|
|
case FT_INT16:
|
|
case FT_INT24:
|
|
case FT_INT32:
|
|
format = "%s == %d";
|
|
break;
|
|
case FT_INT64:
|
|
format = "%s == %" G_GINT64_MODIFIER "d";
|
|
break;
|
|
default:
|
|
DISSECTOR_ASSERT_NOT_REACHED();
|
|
;
|
|
}
|
|
break;
|
|
case BASE_HEX:
|
|
case BASE_HEX_DEC:
|
|
switch(hfinfo->type) {
|
|
case FT_UINT8:
|
|
format = "%s == 0x%02x";
|
|
break;
|
|
case FT_UINT16:
|
|
format = "%s == 0x%04x";
|
|
break;
|
|
case FT_UINT24:
|
|
format = "%s == 0x%06x";
|
|
break;
|
|
case FT_UINT32:
|
|
format = "%s == 0x%08x";
|
|
break;
|
|
case FT_UINT64:
|
|
format = "%s == 0x%016" G_GINT64_MODIFIER "x";
|
|
break;
|
|
default:
|
|
DISSECTOR_ASSERT_NOT_REACHED();
|
|
;
|
|
}
|
|
break;
|
|
default:
|
|
DISSECTOR_ASSERT_NOT_REACHED();
|
|
;
|
|
}
|
|
}
|
|
return format;
|
|
}
|
|
|
|
/* This function indicates whether it's possible to construct a
|
|
* "match selected" display filter string for the specified field,
|
|
* returns an indication of whether it's possible, and, if it's
|
|
* possible and "filter" is non-null, constructs the filter and
|
|
* sets "*filter" to point to it.
|
|
* You do not need to [g_]free() this string since it will be automatically
|
|
* freed once the next packet is dissected.
|
|
*/
|
|
static gboolean
|
|
construct_match_selected_string(field_info *finfo, epan_dissect_t *edt,
|
|
char **filter)
|
|
{
|
|
header_field_info *hfinfo;
|
|
int abbrev_len;
|
|
char *ptr;
|
|
int buf_len;
|
|
const char *format;
|
|
int dfilter_len, i;
|
|
gint start, length, length_remaining;
|
|
guint8 c;
|
|
gchar is_signed_num = FALSE;
|
|
|
|
hfinfo = finfo->hfinfo;
|
|
DISSECTOR_ASSERT(hfinfo);
|
|
abbrev_len = strlen(hfinfo->abbrev);
|
|
|
|
/*
|
|
* XXX - we can't use the "val_to_string_repr" and "string_repr_len"
|
|
* functions for FT_UINT and FT_INT types, as we choose the base in
|
|
* the string expression based on the display base of the field.
|
|
*
|
|
* Note that the base does matter, as this is also used for
|
|
* the protocolinfo tap.
|
|
*
|
|
* It might be nice to use them in "proto_item_fill_label()"
|
|
* as well, although, there, you'd have to deal with the base
|
|
* *and* with resolved values for addresses.
|
|
*
|
|
* Perhaps we need two different val_to_string routines, one
|
|
* to generate items for display filters and one to generate
|
|
* strings for display, and pass to both of them the
|
|
* "display" and "strings" values in the header_field_info
|
|
* structure for the field, so they can get the base and,
|
|
* if the field is Boolean or an enumerated integer type,
|
|
* the tables used to generate human-readable values.
|
|
*/
|
|
switch(hfinfo->type) {
|
|
|
|
case FT_INT8:
|
|
case FT_INT16:
|
|
case FT_INT24:
|
|
case FT_INT32:
|
|
is_signed_num = TRUE;
|
|
case FT_UINT8:
|
|
case FT_UINT16:
|
|
case FT_UINT24:
|
|
case FT_UINT32:
|
|
case FT_FRAMENUM:
|
|
/*
|
|
* 4 bytes for " == ".
|
|
* 11 bytes for:
|
|
*
|
|
* a sign + up to 10 digits of 32-bit integer,
|
|
* in decimal;
|
|
*
|
|
* "0x" + 8 digits of 32-bit integer, in hex;
|
|
*
|
|
* 11 digits of 32-bit integer, in octal.
|
|
* (No, we don't do octal, but this way,
|
|
* we know that if we do, this will still
|
|
* work.)
|
|
*
|
|
* 1 byte for the trailing '\0'.
|
|
*/
|
|
if (filter != NULL) {
|
|
dfilter_len = abbrev_len + 4 + 11 + 1;
|
|
*filter = ep_alloc0(dfilter_len);
|
|
format = hfinfo_numeric_format(hfinfo);
|
|
if(is_signed_num) {
|
|
g_snprintf(*filter, dfilter_len, format,
|
|
hfinfo->abbrev,
|
|
fvalue_get_sinteger(&finfo->value));
|
|
} else {
|
|
g_snprintf(*filter, dfilter_len, format,
|
|
hfinfo->abbrev,
|
|
fvalue_get_uinteger(&finfo->value));
|
|
}
|
|
}
|
|
break;
|
|
|
|
case FT_INT64:
|
|
case FT_UINT64:
|
|
/*
|
|
* 4 bytes for " == ".
|
|
* 22 bytes for:
|
|
*
|
|
* a sign + up to 20 digits of 32-bit integer,
|
|
* in decimal;
|
|
*
|
|
* "0x" + 16 digits of 32-bit integer, in hex;
|
|
*
|
|
* 22 digits of 32-bit integer, in octal.
|
|
* (No, we don't do octal, but this way,
|
|
* we know that if we do, this will still
|
|
* work.)
|
|
*
|
|
* 1 byte for the trailing '\0'.
|
|
*/
|
|
if (filter != NULL) {
|
|
dfilter_len = abbrev_len + 4 + 22 + 1;
|
|
*filter = ep_alloc0(dfilter_len);
|
|
format = hfinfo_numeric_format(hfinfo);
|
|
g_snprintf(*filter, dfilter_len, format,
|
|
hfinfo->abbrev,
|
|
fvalue_get_integer64(&finfo->value));
|
|
}
|
|
break;
|
|
|
|
case FT_PROTOCOL:
|
|
if (filter != NULL)
|
|
*filter = ep_strdup(finfo->hfinfo->abbrev);
|
|
break;
|
|
|
|
case FT_NONE:
|
|
case FT_PCRE:
|
|
/*
|
|
* If the length is 0, just match the name of the
|
|
* field.
|
|
*
|
|
* (Also check for negative values, just in case,
|
|
* as we'll cast it to an unsigned value later.)
|
|
*/
|
|
length = finfo->length;
|
|
if (length == 0) {
|
|
if (filter != NULL)
|
|
*filter = ep_strdup(finfo->hfinfo->abbrev);
|
|
break;
|
|
}
|
|
if (length < 0)
|
|
return FALSE;
|
|
|
|
/*
|
|
* This doesn't have a value, so we'd match
|
|
* on the raw bytes at this address.
|
|
*
|
|
* Should we be allowed to access to the raw bytes?
|
|
* If "edt" is NULL, the answer is "no".
|
|
*/
|
|
if (edt == NULL)
|
|
return FALSE;
|
|
|
|
/*
|
|
* Is this field part of the raw frame tvbuff?
|
|
* If not, we can't use "frame[N:M]" to match
|
|
* it.
|
|
*
|
|
* XXX - should this be frame-relative, or
|
|
* protocol-relative?
|
|
*
|
|
* XXX - does this fallback for non-registered
|
|
* fields even make sense?
|
|
*/
|
|
if (finfo->ds_tvb != edt->tvb)
|
|
return FALSE; /* you lose */
|
|
|
|
/*
|
|
* Don't go past the end of that tvbuff.
|
|
*/
|
|
length_remaining = tvb_length_remaining(finfo->ds_tvb, finfo->start);
|
|
if (length > length_remaining)
|
|
length = length_remaining;
|
|
if (length <= 0)
|
|
return FALSE;
|
|
|
|
if (filter != NULL) {
|
|
start = finfo->start;
|
|
buf_len = 32 + length * 3;
|
|
*filter = ep_alloc0(buf_len);
|
|
ptr = *filter;
|
|
|
|
ptr += g_snprintf(ptr, buf_len-(ptr-*filter),
|
|
"frame[%d:%d] == ", finfo->start, length);
|
|
for (i=0;i<length; i++) {
|
|
c = tvb_get_guint8(finfo->ds_tvb, start);
|
|
start++;
|
|
if (i == 0 ) {
|
|
ptr += g_snprintf(ptr, buf_len-(ptr-*filter), "%02x", c);
|
|
}
|
|
else {
|
|
ptr += g_snprintf(ptr, buf_len-(ptr-*filter), ":%02x", c);
|
|
}
|
|
}
|
|
}
|
|
break;
|
|
|
|
/* By default, use the fvalue's "to_string_repr" method. */
|
|
default:
|
|
/* Figure out the string length needed.
|
|
* The ft_repr length.
|
|
* 4 bytes for " == ".
|
|
* 1 byte for trailing NUL.
|
|
*/
|
|
if (filter != NULL) {
|
|
dfilter_len = fvalue_string_repr_len(&finfo->value,
|
|
FTREPR_DFILTER);
|
|
dfilter_len += abbrev_len + 4 + 1;
|
|
*filter = ep_alloc0(dfilter_len);
|
|
|
|
/* Create the string */
|
|
g_snprintf(*filter, dfilter_len, "%s == ",
|
|
hfinfo->abbrev);
|
|
fvalue_to_string_repr(&finfo->value,
|
|
FTREPR_DFILTER,
|
|
&(*filter)[abbrev_len + 4]);
|
|
}
|
|
break;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/*
|
|
* Returns TRUE if we can do a "match selected" on the field, FALSE
|
|
* otherwise.
|
|
*/
|
|
gboolean
|
|
proto_can_match_selected(field_info *finfo, epan_dissect_t *edt)
|
|
{
|
|
return construct_match_selected_string(finfo, edt, NULL);
|
|
}
|
|
|
|
/* This function attempts to construct a "match selected" display filter
|
|
* string for the specified field; if it can do so, it returns a pointer
|
|
* to the string, otherwise it returns NULL.
|
|
*
|
|
* The string is allocated with packet lifetime scope.
|
|
* You do not need to [g_]free() this string since it will be automatically
|
|
* freed once the next packet is dissected.
|
|
*/
|
|
char*
|
|
proto_construct_match_selected_string(field_info *finfo, epan_dissect_t *edt)
|
|
{
|
|
char *filter;
|
|
|
|
if (!construct_match_selected_string(finfo, edt, &filter))
|
|
return NULL;
|
|
return filter;
|
|
}
|
|
|
|
|
|
/* This function is common code for both proto_tree_add_bitmask() and
|
|
* proto_tree_add_bitmask_text() functions.
|
|
*/
|
|
static gboolean
|
|
proto_item_add_bitmask_tree(proto_item *item, tvbuff_t *tvb, int offset, int len, gint ett,
|
|
const int **fields, gboolean little_endian, int flags, gboolean first)
|
|
{
|
|
guint32 value = 0, tmpval;
|
|
proto_tree *tree = NULL;
|
|
header_field_info *hf;
|
|
const char *fmt;
|
|
|
|
switch (len) {
|
|
case 1:
|
|
value = tvb_get_guint8(tvb, offset);
|
|
break;
|
|
case 2:
|
|
value = little_endian ? tvb_get_letohs(tvb, offset) :
|
|
tvb_get_ntohs(tvb, offset);
|
|
break;
|
|
case 3:
|
|
value = little_endian ? tvb_get_letoh24(tvb, offset) :
|
|
tvb_get_ntoh24(tvb, offset);
|
|
break;
|
|
case 4:
|
|
value = little_endian ? tvb_get_letohl(tvb, offset) :
|
|
tvb_get_ntohl(tvb, offset);
|
|
break;
|
|
default:
|
|
g_assert_not_reached();
|
|
}
|
|
|
|
tree = proto_item_add_subtree(item, ett);
|
|
while (*fields) {
|
|
proto_tree_add_item(tree, **fields, tvb, offset, len, little_endian);
|
|
if (flags & BMT_NO_APPEND) {
|
|
fields++;
|
|
continue;
|
|
}
|
|
hf = proto_registrar_get_nth(**fields);
|
|
DISSECTOR_ASSERT(hf->bitmask != 0);
|
|
tmpval = (value & hf->bitmask) >> hf->bitshift;
|
|
|
|
switch (hf->type) {
|
|
case FT_INT8:
|
|
case FT_UINT8:
|
|
case FT_INT16:
|
|
case FT_UINT16:
|
|
case FT_INT24:
|
|
case FT_UINT24:
|
|
case FT_INT32:
|
|
case FT_UINT32:
|
|
DISSECTOR_ASSERT(len == ftype_length(hf->type));
|
|
|
|
if (hf->display == BASE_CUSTOM) {
|
|
gchar lbl[ITEM_LABEL_LENGTH];
|
|
custom_fmt_func_t fmtfunc = (custom_fmt_func_t)hf->strings;
|
|
|
|
DISSECTOR_ASSERT(fmtfunc);
|
|
fmtfunc(lbl, tmpval);
|
|
proto_item_append_text(item, "%s%s: %s", first ? "" : ", ",
|
|
hf->name, lbl);
|
|
first = FALSE;
|
|
}
|
|
else if (hf->strings) {
|
|
proto_item_append_text(item, "%s%s: %s", first ? "" : ", ",
|
|
hf->name, val_to_str(tmpval, hf->strings, "Unknown"));
|
|
first = FALSE;
|
|
}
|
|
else if (!(flags & BMT_NO_INT)) {
|
|
if (!first) {
|
|
proto_item_append_text(item, ", ");
|
|
}
|
|
|
|
fmt = IS_FT_INT(hf->type) ? hfinfo_int_format(hf) : hfinfo_uint_format(hf);
|
|
if (IS_BASE_DUAL(hf->display)) {
|
|
proto_item_append_text(item, fmt, hf->name, tmpval, tmpval);
|
|
} else {
|
|
proto_item_append_text(item, fmt, hf->name, tmpval);
|
|
}
|
|
first = FALSE;
|
|
}
|
|
|
|
break;
|
|
case FT_BOOLEAN:
|
|
DISSECTOR_ASSERT(len * 8 == hf->display);
|
|
|
|
if (hf->strings && !(flags & BMT_NO_TFS)) {
|
|
/* If we have true/false strings, emit full - otherwise messages
|
|
might look weird */
|
|
const struct true_false_string *tfs =
|
|
(const struct true_false_string *)hf->strings;
|
|
|
|
if (tmpval) {
|
|
proto_item_append_text(item, "%s%s: %s", first ? "" : ", ",
|
|
hf->name, tfs->true_string);
|
|
first = FALSE;
|
|
} else if (!(flags & BMT_NO_FALSE)) {
|
|
proto_item_append_text(item, "%s%s: %s", first ? "" : ", ",
|
|
hf->name, tfs->false_string);
|
|
first = FALSE;
|
|
}
|
|
} else if (hf->bitmask & value) {
|
|
/* If the flag is set, show the name */
|
|
proto_item_append_text(item, "%s%s", first ? "" : ", ", hf->name);
|
|
first = FALSE;
|
|
}
|
|
break;
|
|
default:
|
|
g_assert_not_reached();
|
|
}
|
|
|
|
fields++;
|
|
}
|
|
|
|
return first;
|
|
}
|
|
|
|
/* This function will dissect a sequence of bytes that describe a
|
|
* bitmask.
|
|
* hf_hdr is a 8/16/24/32 bit integer that describes the bitmask to be dissected.
|
|
* This field will form an expansion under which the individual fields of the
|
|
* bitmask is dissected and displayed.
|
|
* This field must be of the type FT_[U]INT{8|16|24|32}.
|
|
*
|
|
* fields is an array of pointers to int that lists all the fields of the
|
|
* bitmask. These fields can be either of the type FT_BOOLEAN for flags
|
|
* or another integer of the same type/size as hf_hdr with a mask specified.
|
|
* This array is terminated by a NULL entry.
|
|
*
|
|
* FT_BOOLEAN bits that are set to 1 will have the name added to the expansion.
|
|
* FT_integer fields that have a value_string attached will have the
|
|
* matched string displayed on the expansion line.
|
|
*/
|
|
proto_item *
|
|
proto_tree_add_bitmask(proto_tree *parent_tree, tvbuff_t *tvb, guint offset, int hf_hdr,
|
|
gint ett, const int **fields, gboolean little_endian)
|
|
{
|
|
proto_item *item = NULL;
|
|
header_field_info *hf;
|
|
int len;
|
|
|
|
hf = proto_registrar_get_nth(hf_hdr);
|
|
DISSECTOR_ASSERT(IS_FT_INT(hf->type) || IS_FT_UINT(hf->type));
|
|
len = ftype_length(hf->type);
|
|
|
|
if (parent_tree) {
|
|
item = proto_tree_add_item(parent_tree, hf_hdr, tvb, offset, len, little_endian);
|
|
proto_item_add_bitmask_tree(item, tvb, offset, len, ett, fields, little_endian,
|
|
BMT_NO_INT|BMT_NO_TFS, FALSE);
|
|
}
|
|
|
|
return item;
|
|
}
|
|
|
|
/* The same as proto_tree_add_bitmask(), but using an arbitrary text as a top-level item */
|
|
proto_item *
|
|
proto_tree_add_bitmask_text(proto_tree *parent_tree, tvbuff_t *tvb, guint offset, guint len,
|
|
const char *name, const char *fallback,
|
|
gint ett, const int **fields, gboolean little_endian, int flags)
|
|
{
|
|
proto_item *item = NULL;
|
|
|
|
if (parent_tree) {
|
|
item = proto_tree_add_text(parent_tree, tvb, offset, len, "%s", name ? name : "");
|
|
if (proto_item_add_bitmask_tree(item, tvb, offset, len, ett, fields, little_endian,
|
|
flags, TRUE) && fallback) {
|
|
/* Still at first item - append 'fallback' text if any */
|
|
proto_item_append_text(item, "%s", fallback);
|
|
}
|
|
}
|
|
|
|
return item;
|
|
}
|
|
|
|
proto_item *
|
|
proto_tree_add_bits_item(proto_tree *tree, int hf_index, tvbuff_t *tvb, gint bit_offset, gint no_of_bits, gboolean little_endian)
|
|
{
|
|
return proto_tree_add_bits_ret_val(tree, hf_index, tvb, bit_offset, no_of_bits, NULL, little_endian);
|
|
|
|
}
|
|
/*
|
|
* This function will dissect a sequence of bits that does not need to be byte aligned the bits
|
|
* set vill be shown in the tree as ..10 10.. and the integer value returned if return_value is set.
|
|
* Offset should be given in bits from the start of the tvb.
|
|
*/
|
|
|
|
proto_item *
|
|
proto_tree_add_bits_ret_val(proto_tree *tree, int hf_index, tvbuff_t *tvb, gint bit_offset, gint no_of_bits, guint64 *return_value, gboolean little_endian)
|
|
{
|
|
gint offset;
|
|
guint length;
|
|
guint8 tot_no_bits;
|
|
guint8 remaining_bits;
|
|
guint64 mask = 0,tmp;
|
|
char *str;
|
|
header_field_info *hf_field;
|
|
guint64 value = 0;
|
|
int bit;
|
|
int i;
|
|
|
|
hf_field = proto_registrar_get_nth(hf_index);
|
|
|
|
if(hf_field -> bitmask != 0) {
|
|
REPORT_DISSECTOR_BUG(ep_strdup_printf("Incompatible use of proto_tree_add_bits_ret_val with field '%s' (%s) with bitmask != 0",
|
|
hf_field->abbrev, hf_field->name));
|
|
}
|
|
|
|
/* Byte align offset */
|
|
offset = bit_offset>>3;
|
|
|
|
|
|
/*
|
|
* Calculate the number of octets used to hold the bits
|
|
*/
|
|
tot_no_bits = ((bit_offset&0x7)+no_of_bits);
|
|
length = tot_no_bits>>3;
|
|
remaining_bits = tot_no_bits % 8;
|
|
if ((remaining_bits)!=0)
|
|
length++;
|
|
|
|
if (no_of_bits < 9){
|
|
value = tvb_get_bits8(tvb, bit_offset, no_of_bits);
|
|
}else if(no_of_bits < 17){
|
|
value = tvb_get_bits16(tvb, bit_offset, no_of_bits, little_endian);
|
|
}else if(no_of_bits < 33){
|
|
value = tvb_get_bits32(tvb, bit_offset, no_of_bits, little_endian);
|
|
}else if(no_of_bits < 65){
|
|
value = tvb_get_bits64(tvb, bit_offset, no_of_bits, little_endian);
|
|
}else if(no_of_bits>64){
|
|
DISSECTOR_ASSERT_NOT_REACHED();
|
|
return NULL;
|
|
}
|
|
|
|
|
|
mask = 1;
|
|
mask = mask << (no_of_bits-1);
|
|
|
|
/* prepare the string */
|
|
str=ep_alloc(256);
|
|
str[0]='\0';
|
|
for(bit=0;bit<((int)(bit_offset&0x07));bit++){
|
|
if(bit&&(!(bit%4))){
|
|
strcat(str, " ");
|
|
}
|
|
strcat(str,".");
|
|
}
|
|
/* read the bits for the int */
|
|
for(i=0;i<no_of_bits;i++){
|
|
if(bit&&(!(bit%4))){
|
|
strcat(str, " ");
|
|
}
|
|
if(bit&&(!(bit%8))){
|
|
strcat(str, " ");
|
|
}
|
|
bit++;
|
|
tmp = value & mask;
|
|
if(tmp != 0){
|
|
strcat(str, "1");
|
|
} else {
|
|
strcat(str, "0");
|
|
}
|
|
mask = mask>>1;
|
|
}
|
|
for(;bit%8;bit++){
|
|
if(bit&&(!(bit%4))){
|
|
strcat(str, " ");
|
|
}
|
|
strcat(str,".");
|
|
}
|
|
|
|
if(return_value){
|
|
*return_value=value;
|
|
}
|
|
if(hf_index == -1)
|
|
return NULL;
|
|
|
|
strcat(str," = ");
|
|
strcat(str,hf_field->name);
|
|
|
|
switch(hf_field->type){
|
|
case FT_BOOLEAN:
|
|
/* Boolean field */
|
|
if (hf_field->strings) {
|
|
const true_false_string *tfstring = &tfs_true_false;
|
|
tfstring = (const struct true_false_string*) hf_field->strings;
|
|
|
|
return proto_tree_add_boolean_format(tree, hf_index, tvb, offset, length, (guint32)value,
|
|
"%s: %s",
|
|
str,
|
|
(guint32)value ? tfstring->true_string : tfstring->false_string);
|
|
}else{
|
|
return proto_tree_add_boolean_format(tree, hf_index, tvb, offset, length, (guint32)value,
|
|
"%s: %u",
|
|
str,
|
|
(guint32)value);
|
|
}
|
|
break;
|
|
case FT_UINT8:
|
|
case FT_UINT16:
|
|
case FT_UINT24:
|
|
case FT_UINT32:
|
|
/* 1 - 32 bits field */
|
|
if (hf_field->strings) {
|
|
return proto_tree_add_uint_format(tree, hf_index, tvb, offset, length, (guint32)value,
|
|
"%s: %s (%u)",
|
|
str,
|
|
val_to_str((guint32)value, cVALS(hf_field->strings), "Unknown "),
|
|
(guint32)value);
|
|
break;
|
|
}
|
|
switch(hf_field->display){
|
|
case BASE_DEC:
|
|
return proto_tree_add_uint_format(tree, hf_index, tvb, offset, length, (guint32)value,
|
|
"%s: %u",
|
|
str,
|
|
(guint32)value);
|
|
break;
|
|
case BASE_HEX:
|
|
return proto_tree_add_uint_format(tree, hf_index, tvb, offset, length, (guint32)value,
|
|
"%s: 0x%x",
|
|
str,
|
|
(guint32)value);
|
|
break;
|
|
default:
|
|
DISSECTOR_ASSERT_NOT_REACHED();
|
|
return NULL;
|
|
break;
|
|
}
|
|
break;
|
|
case FT_UINT64:
|
|
switch(hf_field->display){
|
|
case BASE_DEC:
|
|
return proto_tree_add_uint64_format(tree, hf_index, tvb, offset, length, value,
|
|
"%s: %" G_GINT64_MODIFIER "u",
|
|
str, value);
|
|
break;
|
|
case BASE_HEX:
|
|
return proto_tree_add_uint64_format(tree, hf_index, tvb, offset, length, value,
|
|
"%s: 0x%" G_GINT64_MODIFIER "x",
|
|
str, value);
|
|
break;
|
|
default:
|
|
DISSECTOR_ASSERT_NOT_REACHED();
|
|
return NULL;
|
|
break;
|
|
}
|
|
break;
|
|
default:
|
|
DISSECTOR_ASSERT_NOT_REACHED();
|
|
return NULL;
|
|
break;
|
|
}
|
|
|
|
}
|