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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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include "packet.h"
#include "expert.h"
#include "emem.h"
#include "tap.h"
static int expert_tap = -1;
static int highest_severity = 0;
const value_string expert_group_vals[] = {
{ PI_CHECKSUM, "Checksum" },
{ PI_SEQUENCE, "Sequence" },
{ PI_RESPONSE_CODE, "Response" },
{ PI_REQUEST_CODE, "Request" },
{ PI_UNDECODED, "Undecoded" },
{ PI_MALFORMED, "Malformed" },
{ PI_REASSEMBLE, "Reassemble" },
/* { PI_SECURITY, "Security" },*/
{ 0, NULL }
};
const value_string expert_severity_vals[] = {
{ PI_ERROR, "Error" },
{ PI_WARN, "Warn" },
{ PI_NOTE, "Note" },
{ PI_CHAT, "Chat" },
{ 0, "Ok" },
{ 0, NULL }
};
void
expert_init(void)
{
if(expert_tap == -1) {
expert_tap = register_tap("expert");
}
highest_severity = 0;
}
void
expert_cleanup(void)
{
/* memory cleanup will be done by se_... */
}
int
expert_get_highest_severity(void)
{
return highest_severity;
}
/* set's the PI_ flags to a protocol item
* (and it's 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 void
expert_set_info_vformat(
packet_info *pinfo, proto_item *pi, int group, int severity, const char *format, va_list ap)
{
int ret; /*tmp return value */
char formatted[300];
expert_info_t *ei;
/* if this packet isn't loaded because of a read filter, don't output anything */
if(pinfo == NULL || pinfo->fd->num == 0) {
return;
}
if(severity > highest_severity) {
highest_severity = severity;
}
/* XXX - use currently nonexistant se_vsnprintf instead */
ret = g_vsnprintf(formatted, sizeof(formatted), format, ap);
if ((ret == -1) || (ret >= (int)sizeof(formatted)))
formatted[sizeof(formatted) - 1] = '\0';
ei = ep_alloc(sizeof(expert_info_t));
ei->packet_num = pinfo->fd->num;
ei->group = group;
ei->severity = severity;
ei->protocol = ep_strdup(pinfo->current_proto);
ei->summary = ep_strdup(formatted);
ei->pitem = NULL;
/* if we have a proto_item (not a faked item), set expert attributes to it */
if(pi != NULL && pi->finfo != NULL) {
ei->pitem = pi;
expert_set_item_flags(pi, group, severity);
}
if (check_col(pinfo->cinfo, COL_EXPERT))
col_add_str(pinfo->cinfo, COL_EXPERT, val_to_str(severity, expert_severity_vals, "?%u?"));
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);
}
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