117 lines
3.0 KiB
C
117 lines
3.0 KiB
C
/* packet-l1-events.c
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* Routines for text-based layer 1 messages in EyeSDN trace files
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*
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* (C) Rolf Fiedler 2008, based on packet-text-media.c by Olivier Biot, 2004.
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*
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* Refer to the AUTHORS file or the AUTHORS section in the man page
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* for contacting the author(s) of this file.
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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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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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/* Edit this file with 4-space tabs */
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#include "config.h"
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#include <epan/packet.h>
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#include <wiretap/wtap.h>
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void proto_register_l1_events(void);
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void proto_reg_handoff_l1_events(void);
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/*
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* dissector for line-based text messages from layer 1
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*/
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/* Filterable header fields */
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static gint proto_l1_events = -1;
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/* Subtrees */
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static gint ett_l1_events = -1;
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static int
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dissect_l1_events(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
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{
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proto_tree *subtree;
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proto_item *ti;
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gint offset = 0, next_offset;
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gint len;
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col_set_str(pinfo->cinfo, COL_PROTOCOL, "Layer1");
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col_set_str(pinfo->cinfo, COL_DEF_SRC,
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pinfo->pseudo_header->l1event.uton? "TE" : "NT");
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len = tvb_find_line_end(tvb, 0, -1, &next_offset, FALSE);
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if(len>0)
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col_add_str(pinfo->cinfo, COL_INFO, tvb_format_text(pinfo->pool, tvb, 0, len));
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if (tree) {
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ti = proto_tree_add_item(tree, proto_l1_events,
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tvb, 0, -1, ENC_NA);
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subtree = proto_item_add_subtree(ti, ett_l1_events);
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/* Read the media line by line */
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while (tvb_offset_exists(tvb, offset)) {
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/*
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* XXX - we need to be passed the parameters
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* of the content type via data parameter,
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* so that we know the character set. We'd
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* have to handle that character set, which
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* might be a multibyte character set such
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* as "iso-10646-ucs-2", or might require other
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* special processing.
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*/
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len = tvb_find_line_end(tvb, offset, -1, &next_offset, FALSE);
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if (len == -1)
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break;
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/* We use next_offset - offset instead of len in the
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* call to proto_tree_add_format_text() so it will include the
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* line terminator(s) (\r and/or \n) in the display.
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*/
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proto_tree_add_format_text(subtree, tvb, offset, next_offset - offset);
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offset = next_offset;
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}
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}
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return tvb_captured_length(tvb);
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}
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void
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proto_register_l1_events(void)
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{
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static gint *ett[] = {
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&ett_l1_events,
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};
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proto_register_subtree_array(ett, array_length(ett));
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proto_l1_events = proto_register_protocol(
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"Layer 1 Event Messages", /* Long name */
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"Layer 1 Events", /* Short name */
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"data-l1-events"); /* Filter name */
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}
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void
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proto_reg_handoff_l1_events(void)
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{
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dissector_handle_t l1_events_handle = create_dissector_handle(dissect_l1_events, proto_l1_events);
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dissector_add_uint("wtap_encap", WTAP_ENCAP_LAYER1_EVENT, l1_events_handle); /* for text msgs from trace files */
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}
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/*
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* Editor modelines - https://www.wireshark.org/tools/modelines.html
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*
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* Local variables:
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* c-basic-offset: 8
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* tab-width: 8
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* indent-tabs-mode: t
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* End:
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*
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* vi: set shiftwidth=8 tabstop=8 noexpandtab:
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* :indentSize=8:tabSize=8:noTabs=false:
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*/
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