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author | Jakub Zawadzki <darkjames-ws@darkjames.pl> | 2013-07-14 07:42:19 +0000 |
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committer | Jakub Zawadzki <darkjames-ws@darkjames.pl> | 2013-07-14 07:42:19 +0000 |
commit | 0d85b75305677a1298b76718112c4e440f84b94c (patch) | |
tree | 70ddebed4e192eb88700d2dd208d58b6d4c32477 /epan/tvbuff_real.c | |
parent | c089afca5c353aec09a7bd7d918f58b21bcc9437 (diff) | |
download | wireshark-0d85b75305677a1298b76718112c4e440f84b94c.tar.gz |
Move tvb real and subset implementations to seperate files.
svn path=/trunk/; revision=50569
Diffstat (limited to 'epan/tvbuff_real.c')
-rw-r--r-- | epan/tvbuff_real.c | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/epan/tvbuff_real.c b/epan/tvbuff_real.c new file mode 100644 index 0000000000..c1014eddbf --- /dev/null +++ b/epan/tvbuff_real.c @@ -0,0 +1,120 @@ +/* tvbuff_real.c + * + * $Id$ + * + * Copyright (c) 2000 by Gilbert Ramirez <gram@alumni.rice.edu> + * + * Wireshark - Network traffic analyzer + * By Gerald Combs <gerald@wireshark.org> + * Copyright 1998 Gerald Combs + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#include "config.h" + +#include "tvbuff.h" +#include "tvbuff-int.h" +#include "proto.h" /* XXX - only used for DISSECTOR_ASSERT, probably a new header file? */ + +struct tvb_real { + struct tvbuff tvb; + + /** Func to call when actually freed */ + tvbuff_free_cb_t free_cb; +}; + +static gsize +real_sizeof(void) +{ + return sizeof(struct tvb_real); +} + +static void +real_free(tvbuff_t *tvb) +{ + struct tvb_real *real_tvb = (struct tvb_real *) tvb; + + if (real_tvb->free_cb) { + /* + * XXX - do this with a union? + */ + real_tvb->free_cb((gpointer)tvb->real_data); + } +} + +static guint +real_offset(const tvbuff_t *tvb _U_, const guint counter) +{ + return counter; +} + +static const struct tvb_ops tvb_real_ops = { + real_sizeof, /* size */ + real_free, /* free */ + real_offset, /* offset */ + NULL, /* get_ptr */ + NULL, /* memcpy */ + NULL, /* find_guint8 */ + NULL, /* pbrk_guint8 */ + NULL, /* clone */ +}; + +tvbuff_t * +tvb_new_real_data(const guint8* data, const guint length, const gint reported_length) +{ + tvbuff_t *tvb; + struct tvb_real *real_tvb; + + THROW_ON(reported_length < -1, ReportedBoundsError); + + tvb = tvb_new(&tvb_real_ops); + + tvb->real_data = data; + tvb->length = length; + tvb->reported_length = reported_length; + tvb->initialized = TRUE; + + /* + * This is the top-level real tvbuff for this data source, + * so its data source tvbuff is itself. + */ + tvb->ds_tvb = tvb; + + real_tvb = (struct tvb_real *) tvb; + real_tvb->free_cb = NULL; + + return tvb; +} + +void +tvb_set_free_cb(tvbuff_t *tvb, const tvbuff_free_cb_t func) +{ + struct tvb_real *real_tvb = (struct tvb_real *) tvb; + + DISSECTOR_ASSERT(tvb); + DISSECTOR_ASSERT(tvb->ops == &tvb_real_ops); + real_tvb->free_cb = func; +} + +void +tvb_set_child_real_data_tvbuff(tvbuff_t *parent, tvbuff_t *child) +{ + DISSECTOR_ASSERT(parent && child); + DISSECTOR_ASSERT(parent->initialized); + DISSECTOR_ASSERT(child->initialized); + DISSECTOR_ASSERT(child->ops == &tvb_real_ops); + tvb_add_to_chain(parent, child); +} |