![Guy Harris](/assets/img/avatar_default.png)
static, and add a new "packet-data.h" to declare "proto_data". Display escape sequences in octal in the IAPP dissector, as is now done in the RADIUS dissector. svn path=/trunk/; revision=5441
419 lines
11 KiB
C
419 lines
11 KiB
C
/* print.c
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* Routines for printing packet analysis trees.
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*
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* $Id: print.c,v 1.46 2002/05/10 23:20:38 guy Exp $
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*
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* Gilbert Ramirez <gram@alumni.rice.edu>
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*
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* Ethereal - Network traffic analyzer
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* By Gerald Combs <gerald@ethereal.com>
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* Copyright 1998 Gerald Combs
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <stdio.h>
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#include <string.h>
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#ifdef HAVE_SYS_TYPES_H
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# include <sys/types.h>
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#endif
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#include <epan/packet.h>
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#include "print.h"
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#include "ps.h"
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#include "util.h"
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#include <epan/tvbuff.h>
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#include "packet-data.h"
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static void proto_tree_print_node_text(GNode *node, gpointer data);
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static void proto_tree_print_node_ps(GNode *node, gpointer data);
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static void ps_clean_string(unsigned char *out, const unsigned char *in,
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int outbuf_size);
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static void print_hex_data_text(FILE *fh, register const u_char *cp,
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register u_int length, char_enc encoding);
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static void print_hex_data_ps(FILE *fh, register const u_char *cp,
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register u_int length, char_enc encoding);
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typedef struct {
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int level;
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FILE *fh;
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GSList *src_list;
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gboolean print_all_levels;
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gboolean print_hex_for_data;
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char_enc encoding;
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} print_data;
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FILE *open_print_dest(int to_file, const char *dest)
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{
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FILE *fh;
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/* Open the file or command for output */
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if (to_file)
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fh = fopen(dest, "w");
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else
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fh = popen(dest, "w");
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return fh;
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}
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void close_print_dest(int to_file, FILE *fh)
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{
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/* Close the file or command */
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if (to_file)
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fclose(fh);
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else
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pclose(fh);
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}
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void print_preamble(FILE *fh, gint format)
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{
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if (format == PR_FMT_PS)
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print_ps_preamble(fh);
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}
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void print_finale(FILE *fh, gint format)
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{
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if (format == PR_FMT_PS)
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print_ps_finale(fh);
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}
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void proto_tree_print(print_args_t *print_args,
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GNode *protocol_tree, frame_data *fd, FILE *fh)
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{
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print_data data;
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/* Create the output */
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data.level = 0;
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data.fh = fh;
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data.src_list = fd->data_src;
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data.encoding = fd->flags.encoding;
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data.print_all_levels = print_args->expand_all;
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data.print_hex_for_data = !print_args->print_hex;
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/* If we're printing the entire packet in hex, don't
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print uninterpreted data fields in hex as well. */
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if (print_args->format == PR_FMT_TEXT) {
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g_node_children_foreach((GNode*) protocol_tree, G_TRAVERSE_ALL,
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proto_tree_print_node_text, &data);
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} else {
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g_node_children_foreach((GNode*) protocol_tree, G_TRAVERSE_ALL,
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proto_tree_print_node_ps, &data);
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}
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}
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/*
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* Find the data source for a specified field, and return a pointer
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* to the data in it.
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*/
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static const guint8 *
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get_field_data(GSList *src_list, field_info *fi)
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{
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GSList *src_le;
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data_source *src;
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tvbuff_t *src_tvb;
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for (src_le = src_list; src_le != NULL; src_le = src_le->next) {
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src = src_le->data;
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src_tvb = src->tvb;
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if (fi->ds_tvb == src_tvb) {
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/*
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* Found it.
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*/
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return tvb_get_ptr(src_tvb, fi->start, fi->length);
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}
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}
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g_assert_not_reached();
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return NULL; /* not found */
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}
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#define MAX_INDENT 160
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/* Print a tree's data, and any child nodes, in plain text */
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static
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void proto_tree_print_node_text(GNode *node, gpointer data)
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{
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field_info *fi = PITEM_FINFO(node);
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print_data *pdata = (print_data*) data;
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int i;
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int num_spaces;
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char space[MAX_INDENT+1];
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const guint8 *pd;
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gchar label_str[ITEM_LABEL_LENGTH];
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gchar *label_ptr;
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/* Don't print invisible entries. */
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if (!fi->visible)
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return;
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/* was a free format label produced? */
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if (fi->representation) {
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label_ptr = fi->representation;
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}
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else { /* no, make a generic label */
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label_ptr = label_str;
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proto_item_fill_label(fi, label_str);
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}
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/* Prepare the tabs for printing, depending on tree level */
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num_spaces = pdata->level * 4;
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if (num_spaces > MAX_INDENT) {
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num_spaces = MAX_INDENT;
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}
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for (i = 0; i < num_spaces; i++) {
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space[i] = ' ';
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}
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/* The string is NUL-terminated */
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space[num_spaces] = '\0';
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/* Print the text */
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fprintf(pdata->fh, "%s%s\n", space, label_ptr);
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/* If it's uninterpreted data, dump it (unless our caller will
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be printing the entire packet in hex). */
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if (fi->hfinfo->id == proto_data && pdata->print_hex_for_data) {
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/*
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* Find the data for this field.
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*/
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pd = get_field_data(pdata->src_list, fi);
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print_hex_data_text(pdata->fh, pd, fi->length, pdata->encoding);
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}
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/* If we're printing all levels, or if this node is one with a
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subtree and its subtree is expanded, recurse into the subtree,
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if it exists. */
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g_assert(fi->tree_type >= -1 && fi->tree_type < num_tree_types);
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if (pdata->print_all_levels ||
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(fi->tree_type >= 0 && tree_is_expanded[fi->tree_type])) {
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if (g_node_n_children(node) > 0) {
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pdata->level++;
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g_node_children_foreach(node, G_TRAVERSE_ALL,
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proto_tree_print_node_text, pdata);
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pdata->level--;
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}
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}
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}
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void print_hex_data(FILE *fh, gint format, frame_data *fd)
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{
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gboolean multiple_sources;
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GSList *src_le;
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data_source *src;
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tvbuff_t *tvb;
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char *name;
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char *line;
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const u_char *cp;
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guint length;
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/*
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* Set "multiple_sources" iff this frame has more than one
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* data source; if it does, we need to print the name of
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* the data source before printing the data from the
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* data source.
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*/
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multiple_sources = (fd->data_src->next != NULL);
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for (src_le = fd->data_src; src_le != NULL; src_le = src_le->next) {
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src = src_le->data;
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tvb = src->tvb;
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if (multiple_sources) {
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name = src->name;
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print_line(fh, format, "\n");
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line = g_malloc(strlen(name) + 3); /* <name>:\n\0 */
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strcpy(line, name);
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strcat(line, ":\n");
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print_line(fh, format, line);
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g_free(line);
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}
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length = tvb_length(tvb);
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cp = tvb_get_ptr(tvb, 0, length);
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if (format == PR_FMT_PS)
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print_hex_data_ps(fh, cp, length, fd->flags.encoding);
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else
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print_hex_data_text(fh, cp, length, fd->flags.encoding);
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}
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}
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/* This routine was created by Dan Lasley <DLASLEY@PROMUS.com>, and
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only slightly modified for ethereal by Gilbert Ramirez. */
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static
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void print_hex_data_text(FILE *fh, register const u_char *cp,
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register u_int length, char_enc encoding)
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{
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register unsigned int ad, i, j, k;
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u_char c;
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u_char line[50+16+1];
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static u_char binhex[16] = {
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'0', '1', '2', '3', '4', '5', '6', '7',
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'8', '9', 'a', 'b', 'c', 'd', 'e', 'f'};
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memset (line, ' ', sizeof line);
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line[sizeof (line)-1] = 0;
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for (ad=i=j=k=0; i<length; i++) {
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c = *cp++;
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line[j++] = binhex[c>>4];
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line[j++] = binhex[c&0xf];
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j++;
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if (encoding == CHAR_EBCDIC) {
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c = EBCDIC_to_ASCII1(c);
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}
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line[50+k++] = c >= ' ' && c < 0x7f ? c : '.';
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if ((i & 15) == 15) {
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fprintf (fh, "\n%04x %s", ad, line);
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/*if (i==15) printf (" %d", length);*/
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memset (line, ' ', sizeof line);
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line[sizeof (line)-1] = j = k = 0;
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ad += 16;
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}
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}
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if (line[0] != ' ') fprintf (fh, "\n%04x %s", ad, line);
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fprintf(fh, "\n");
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return;
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}
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#define MAX_LINE_LENGTH 256
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/* Print a node's data, and any child nodes, in PostScript */
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static
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void proto_tree_print_node_ps(GNode *node, gpointer data)
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{
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field_info *fi = PITEM_FINFO(node);
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print_data *pdata = (print_data*) data;
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gchar label_str[ITEM_LABEL_LENGTH];
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gchar *label_ptr;
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const guint8 *pd;
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char psbuffer[MAX_LINE_LENGTH]; /* static sized buffer! */
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if (!fi->visible)
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return;
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/* was a free format label produced? */
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if (fi->representation) {
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label_ptr = fi->representation;
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}
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else { /* no, make a generic label */
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label_ptr = label_str;
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proto_item_fill_label(fi, label_str);
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}
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/* Print the text */
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ps_clean_string(psbuffer, label_ptr, MAX_LINE_LENGTH);
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fprintf(pdata->fh, "%d (%s) putline\n", pdata->level, psbuffer);
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/* If it's uninterpreted data, dump it (unless our caller will
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be printing the entire packet in hex). */
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if (fi->hfinfo->id == proto_data && pdata->print_hex_for_data) {
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/*
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* Find the data for this field.
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*/
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pd = get_field_data(pdata->src_list, fi);
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print_hex_data_ps(pdata->fh, pd, fi->length, pdata->encoding);
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}
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/* Recurse into the subtree, if it exists */
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if (g_node_n_children(node) > 0) {
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pdata->level++;
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g_node_children_foreach(node, G_TRAVERSE_ALL,
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proto_tree_print_node_ps, pdata);
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pdata->level--;
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}
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}
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static
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void ps_clean_string(unsigned char *out, const unsigned char *in,
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int outbuf_size)
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{
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int rd, wr;
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char c;
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for (rd = 0, wr = 0 ; wr < outbuf_size; rd++, wr++ ) {
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c = in[rd];
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switch (c) {
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case '(':
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case ')':
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case '\\':
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out[wr] = '\\';
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out[++wr] = c;
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break;
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default:
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out[wr] = c;
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break;
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}
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if (c == 0) {
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break;
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}
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}
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}
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static
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void print_hex_data_ps(FILE *fh, register const u_char *cp,
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register u_int length, char_enc encoding)
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{
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register unsigned int ad, i, j, k;
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u_char c;
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u_char line[60];
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static u_char binhex[16] = {
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'0', '1', '2', '3', '4', '5', '6', '7',
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'8', '9', 'a', 'b', 'c', 'd', 'e', 'f'};
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u_char psline[MAX_LINE_LENGTH];
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print_ps_hex(fh);
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memset (line, ' ', sizeof line);
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line[sizeof (line)-1] = 0;
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for (ad=i=j=k=0; i<length; i++) {
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c = *cp++;
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line[j++] = binhex[c>>4];
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line[j++] = binhex[c&0xf];
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if (i&1) j++;
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if (encoding == CHAR_EBCDIC) {
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c = EBCDIC_to_ASCII1(c);
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}
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line[42+k++] = c >= ' ' && c < 0x7f ? c : '.';
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if ((i & 15) == 15) {
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ps_clean_string(psline, line, MAX_LINE_LENGTH);
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fprintf (fh, "(%4x %s) hexdump\n", ad, psline);
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memset (line, ' ', sizeof line);
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line[sizeof (line)-1] = j = k = 0;
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ad += 16;
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}
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}
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if (line[0] != ' ') {
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ps_clean_string(psline, line, MAX_LINE_LENGTH);
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fprintf (fh, "(%4x %s) hexdump\n", ad, psline);
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}
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return;
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}
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void print_line(FILE *fh, gint format, char *line)
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{
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char psbuffer[MAX_LINE_LENGTH]; /* static sized buffer! */
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if (format == PR_FMT_PS) {
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ps_clean_string(psbuffer, line, MAX_LINE_LENGTH);
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fprintf(fh, "(%s) hexdump\n", psbuffer);
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} else
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fputs(line, fh);
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}
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