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-rw-r--r--ui/cli/tap-expert.c279
1 files changed, 279 insertions, 0 deletions
diff --git a/ui/cli/tap-expert.c b/ui/cli/tap-expert.c
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+++ b/ui/cli/tap-expert.c
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+/* tap-expert.c
+ * Copyright 2011 Martin Mathieson
+ *
+ * $Id$
+ *
+ * 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 <stdio.h>
+
+#ifdef HAVE_SYS_TYPES_H
+#include <sys/types.h>
+#endif
+
+#include <string.h>
+#include <epan/packet.h>
+#include <epan/packet_info.h>
+#include <epan/tap.h>
+#include <epan/stat_cmd_args.h>
+#include <epan/expert.h>
+
+/* Tap data */
+typedef enum severity_level_t {
+ chat_level=0,
+ note_level,
+ warn_level,
+ error_level,
+ max_level
+} severity_level_t;
+
+/* This variable stores the lowest level that will be displayed.
+ May be changed from the command line */
+static severity_level_t lowest_report_level = chat_level;
+
+typedef struct expert_entry
+{
+ guint32 group;
+ const gchar *protocol;
+ gchar *summary;
+ int frequency;
+} expert_entry;
+
+
+/* Overall struct for storing all data seen */
+typedef struct expert_tapdata_t {
+ GArray *ei_array[max_level]; /* expert info items */
+ GStringChunk* text; /* for efficient storage of summary strings */
+} expert_tapdata_t;
+
+
+/* Reset expert stats */
+static void
+expert_stat_reset(void *tapdata)
+{
+ gint n;
+ expert_tapdata_t *etd = tapdata;
+
+ /* Free & reallocate chunk of strings */
+ g_string_chunk_free(etd->text);
+ etd->text = g_string_chunk_new(100);
+
+ /* Empty each of the arrays */
+ for (n=0; n < max_level; n++) {
+ g_array_set_size(etd->ei_array[n], 0);
+ }
+}
+
+/* Process stat struct for an expert frame */
+static int
+expert_stat_packet(void *tapdata, packet_info *pinfo _U_, epan_dissect_t *edt _U_,
+ const void *pointer)
+{
+ expert_info_t *ei = (expert_info_t *)pointer;
+ expert_tapdata_t *data = tapdata;
+ severity_level_t severity_level;
+ expert_entry tmp_entry;
+ expert_entry *entry;
+ guint n;
+
+ switch (ei->severity) {
+ case PI_CHAT:
+ severity_level = chat_level;
+ break;
+ case PI_NOTE:
+ severity_level = note_level;
+ break;
+ case PI_WARN:
+ severity_level = warn_level;
+ break;
+ case PI_ERROR:
+ severity_level = error_level;
+ break;
+ default:
+ g_assert_not_reached();
+ return 0;
+ }
+
+ /* Don't store details at a lesser severity than we are interested in */
+ if (severity_level < lowest_report_level) {
+ return 1;
+ }
+
+ /* If a duplicate just bump up frequency.
+ TODO: could make more efficient by avoiding linear search...*/
+ for (n=0; n < data->ei_array[severity_level]->len; n++) {
+ entry = &g_array_index(data->ei_array[severity_level], expert_entry, n);
+ if ((strcmp(ei->protocol, entry->protocol) == 0) &&
+ (strcmp(ei->summary, entry->summary) == 0)) {
+ entry->frequency++;
+ return 1;
+ }
+ }
+
+ /* Else Add new item to end of list for severity level */
+ g_array_append_val(data->ei_array[severity_level], tmp_entry);
+
+ /* Get pointer to newly-allocated item */
+ entry = &g_array_index(data->ei_array[severity_level], expert_entry,
+ data->ei_array[severity_level]->len - 1); /* ugly */
+ /* Copy/Store protocol and summary strings efficiently using GStringChunk */
+ entry->protocol = g_string_chunk_insert_const(data->text, ei->protocol);
+ entry->summary = g_string_chunk_insert_const(data->text, ei->summary);
+ entry->group = ei->group;
+ entry->frequency = 1;
+
+ return 1;
+}
+
+/* Output for all of the items of one severity */
+static void draw_items_for_severity(GArray *items, const gchar *label)
+{
+ guint n;
+ expert_entry *ei;
+ int total = 0;
+
+ /* Don't print title if no items */
+ if (items->len == 0) {
+ return;
+ }
+
+ /* Add frequencies together to get total */
+ for (n=0; n < items->len; n++) {
+ ei = &g_array_index(items, expert_entry, n);
+ total += ei->frequency;
+ }
+
+ /* Title */
+ printf("\n%s (%u)\n", label, total);
+ printf("=============\n");
+
+ /* Column headings */
+ printf(" Frequency Group Protocol Summary\n");
+
+ /* Items */
+ for (n=0; n < items->len; n++) {
+ ei = &g_array_index(items, expert_entry, n);
+ printf("%12u %10s %18s %s\n",
+ ei->frequency,
+ val_to_str(ei->group, expert_group_vals, "Unknown"),
+ ei->protocol, ei->summary);
+ }
+}
+
+/* (Re)draw expert stats */
+static void
+expert_stat_draw(void *phs _U_)
+{
+ /* Look up the statistics struct */
+ expert_tapdata_t *hs = (expert_tapdata_t *)phs;
+
+ draw_items_for_severity(hs->ei_array[error_level], "Errors");
+ draw_items_for_severity(hs->ei_array[warn_level], "Warns");
+ draw_items_for_severity(hs->ei_array[note_level], "Notes");
+ draw_items_for_severity(hs->ei_array[chat_level], "Chats");
+}
+
+/* Create a new expert stats struct */
+static void expert_stat_init(const char *optarg, void *userdata _U_)
+{
+ const char *args = NULL;
+ const char *filter = NULL;
+ GString *error_string;
+ expert_tapdata_t *hs;
+ int n;
+
+ /* Check for args. */
+ if (strncmp(optarg, "expert", 6) == 0) {
+ /* Skip those characters */
+ args = optarg + 6;
+ }
+ else {
+ /* No args. Will show all reports, with no filter */
+ lowest_report_level = max_level;
+ }
+
+ /* First (optional) arg is Error|Warn|Note|Chat */
+ if (args != NULL) {
+ if (g_ascii_strncasecmp(args, ",error", 6) == 0) {
+ lowest_report_level = error_level;
+ args += 6;
+ }
+ else if (g_ascii_strncasecmp(args, ",warn", 5) == 0) {
+ lowest_report_level = warn_level;
+ args += 5;
+ } else if (g_ascii_strncasecmp(args, ",note", 5) == 0) {
+ lowest_report_level = note_level;
+ args += 5;
+ } else if (g_ascii_strncasecmp(args, ",chat", 5) == 0) {
+ lowest_report_level = chat_level;
+ args += 5;
+ }
+ }
+
+ /* Second (optional) arg is a filter string */
+ if (args != NULL) {
+ if (args[0] == ',') {
+ filter = args+1;
+ }
+ }
+
+
+ /* Create top-level struct */
+ hs = g_malloc(sizeof(expert_tapdata_t));
+ memset(hs, 0, sizeof(expert_tapdata_t));
+
+ /* Allocate chunk of strings */
+ hs->text = g_string_chunk_new(100);
+
+ /* Allocate GArray for each severity level */
+ for (n=0; n < max_level; n++) {
+ hs->ei_array[n] = g_array_sized_new(FALSE, FALSE, sizeof(expert_info_t), 1000);
+ }
+
+ /**********************************************/
+ /* Register the tap listener */
+ /**********************************************/
+
+ error_string = register_tap_listener("expert", hs,
+ filter, 0,
+ expert_stat_reset,
+ expert_stat_packet,
+ expert_stat_draw);
+ if (error_string) {
+ printf("Expert tap error (%s)!\n", error_string->str);
+ g_string_free(error_string, TRUE);
+ g_free(hs);
+ exit(1);
+ }
+}
+
+
+/* Register this tap listener (need void on own so line register function found) */
+void
+register_tap_listener_expert_info(void)
+{
+ register_stat_cmd_arg("expert", expert_stat_init, NULL);
+}
+
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