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/* expert.c
* Collecting Expert information.
*
* Implemented as a tap named "expert".
*
* $Id$
*
* 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 "packet.h"
#include "expert.h"
#include "emem.h"
#include "tap.h"
/* proto_expert cannot be static because it's referenced in the
* print routines
*/
int proto_expert = -1;
static int expert_tap = -1;
static int highest_severity = 0;
static int ett_expert = -1;
static int ett_subexpert = -1;
static int hf_expert_msg = -1;
static int hf_expert_group = -1;
static int hf_expert_severity = -1;
const value_string expert_group_vals[] = {
{ PI_CHECKSUM, "Checksum" },
{ PI_SEQUENCE, "Sequence" },
{ PI_RESPONSE_CODE, "Response" },
{ PI_REQUEST_CODE, "Request" },
{ PI_UNDECODED, "Undecoded" },
{ PI_REASSEMBLE, "Reassemble" },
{ PI_MALFORMED, "Malformed" },
{ PI_DEBUG, "Debug" },
{ PI_PROTOCOL, "Protocol" },
{ PI_SECURITY, "Security" },
{ PI_COMMENTS_GROUP, "Comment" },
{ 0, NULL }
};
const value_string expert_severity_vals[] = {
{ PI_ERROR, "Error" },
{ PI_WARN, "Warn" },
{ PI_NOTE, "Note" },
{ PI_CHAT, "Chat" },
{ PI_COMMENT, "Comment" },
{ 0, "Ok" },
{ 0, NULL }
};
void
expert_init(void)
{
static hf_register_info hf[] = {
{ &hf_expert_msg,
{ "Message", "expert.message", FT_STRING, BASE_NONE, NULL, 0, "Wireshark expert information", HFILL }
},
{ &hf_expert_group,
{ "Group", "expert.group", FT_UINT32, BASE_HEX, VALS(expert_group_vals), 0, "Wireshark expert group", HFILL }
},
{ &hf_expert_severity,
{ "Severity level", "expert.severity", FT_UINT32, BASE_HEX, VALS(expert_severity_vals), 0, "Wireshark expert severity level", HFILL }
}
};
static gint *ett[] = {
&ett_expert,
&ett_subexpert
};
if (expert_tap == -1) {
expert_tap = register_tap("expert");
}
if (proto_expert == -1) {
proto_expert = proto_register_protocol("Expert Info", "Expert", "expert");
proto_register_field_array(proto_expert, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
proto_set_cant_toggle(proto_expert);
}
highest_severity = 0;
}
void
expert_cleanup(void)
{
}
int
expert_get_highest_severity(void)
{
return highest_severity;
}
/* set's the PI_ flags to a protocol item
* (and its parent items till the toplevel) */
static void
expert_set_item_flags(proto_item *pi, int group, int severity)
{
if (proto_item_set_expert_flags(pi, group, severity)) {
/* propagate till toplevel item */
pi = proto_item_get_parent(pi);
expert_set_item_flags(pi, group, severity);
}
}
static proto_tree*
expert_create_tree(proto_item *pi, int group, int severity, const char *msg)
{
proto_tree *tree;
proto_item *ti;
tree = proto_item_add_subtree(pi, ett_expert);
ti = proto_tree_add_protocol_format(tree, proto_expert, NULL, 0, 0, "Expert Info (%s/%s): %s",
val_to_str(severity, expert_severity_vals, "Unknown (%u)"),
val_to_str(group, expert_group_vals, "Unknown (%u)"),
msg);
PROTO_ITEM_SET_GENERATED(ti);
if (group == PI_MALFORMED) {
/* Add hidden malformed protocol filter */
gint proto_malformed = proto_get_id_by_filter_name("malformed");
proto_item *malformed_ti = proto_tree_add_item(tree, proto_malformed, NULL, 0, 0, ENC_NA);
PROTO_ITEM_SET_HIDDEN(malformed_ti);
}
return proto_item_add_subtree(ti, ett_subexpert);
}
static void
expert_set_info_vformat(packet_info *pinfo, proto_item *pi, int group, int severity, const char *format, va_list ap)
{
char formatted[ITEM_LABEL_LENGTH];
int tap;
expert_info_t *ei;
proto_tree *tree;
proto_item *ti;
if (pinfo == NULL && pi && pi->tree_data) {
pinfo = PTREE_DATA(pi)->pinfo;
}
/* if this packet isn't loaded because of a read filter, don't output anything */
if (pinfo == NULL || PINFO_FD_NUM(pinfo) == 0) {
return;
}
if (severity > highest_severity) {
highest_severity = severity;
}
if (pi != NULL && PITEM_FINFO(pi) != NULL) {
expert_set_item_flags(pi, group, severity);
}
col_add_str(pinfo->cinfo, COL_EXPERT, val_to_str(severity, expert_severity_vals, "Unknown (%u)"));
g_vsnprintf(formatted, ITEM_LABEL_LENGTH, format, ap);
tree = expert_create_tree(pi, group, severity, formatted);
ti = proto_tree_add_string(tree, hf_expert_msg, NULL, 0, 0, formatted);
PROTO_ITEM_SET_GENERATED(ti);
ti = proto_tree_add_uint_format_value(tree, hf_expert_severity, NULL, 0, 0, severity,
"%s", val_to_str_const(severity, expert_severity_vals, "Unknown"));
PROTO_ITEM_SET_GENERATED(ti);
ti = proto_tree_add_uint_format_value(tree, hf_expert_group, NULL, 0, 0, group,
"%s", val_to_str_const(group, expert_group_vals, "Unknown"));
PROTO_ITEM_SET_GENERATED(ti);
tap = have_tap_listener(expert_tap);
if (!tap)
return;
ei = ep_alloc(sizeof(expert_info_t));
ei->packet_num = PINFO_FD_NUM(pinfo);
ei->group = group;
ei->severity = severity;
ei->protocol = pinfo->current_proto;
ei->summary = ep_strdup(formatted);
/* if we have a proto_item (not a faked item), set expert attributes to it */
if (pi != NULL && PITEM_FINFO(pi) != NULL) {
ei->pitem = pi;
} else {
ei->pitem = NULL;
}
tap_queue_packet(expert_tap, pinfo, ei);
}
void
expert_add_info_format(packet_info *pinfo, proto_item *pi, int group, int severity, const char *format, ...)
{
va_list ap;
va_start(ap, format);
expert_set_info_vformat(pinfo, pi, group, severity, format, ap);
va_end(ap);
}
void
expert_add_undecoded_item(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, int offset, int length, const int severity)
{
proto_item *expert_item;
expert_item = proto_tree_add_text(tree, tvb, offset, length, "Not dissected yet");
expert_add_info_format(pinfo, expert_item, PI_UNDECODED, severity, "Not dissected yet(report to wireshark.org)"); \
PROTO_ITEM_SET_GENERATED(expert_item); \
}
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