6ca5407668
color filters. svn path=/trunk/; revision=6872
246 lines
6.5 KiB
C
246 lines
6.5 KiB
C
/* color_filters.c
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* Routines for color filters
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*
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* $Id: color_filters.c,v 1.1 2003/01/08 01:59:42 guy Exp $
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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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/*
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* Updated 1 Dec 10 jjm
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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 <gtk/gtk.h>
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#include <string.h>
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#include <epan/filesystem.h>
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#include <epan/packet.h>
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#include "color.h"
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#include "colors.h"
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#include "color_filters.h"
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#include "color_utils.h"
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#include "file.h"
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#include <epan/dfilter/dfilter.h>
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#include "simple_dialog.h"
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#include "gtkglobals.h"
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static gboolean read_filters(void);
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GSList *filter_list;
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/* Initialize the filter structures (reading from file) */
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void
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colfilter_init(void)
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{
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read_filters();
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}
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/* Create a new filter */
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color_filter_t *
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new_color_filter(gchar *name, /* The name of the filter to create */
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gchar *filter_string) /* The string representing the filter */
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{
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color_filter_t *colorf;
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GtkStyle *style;
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colorf = (color_filter_t *)g_malloc(sizeof (color_filter_t));
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colorf->filter_name = g_strdup(name);
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colorf->filter_text = g_strdup(filter_string);
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style = gtk_widget_get_style(packet_list);
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gdkcolor_to_color_t(&colorf->bg_color, &style->base[GTK_STATE_NORMAL]);
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gdkcolor_to_color_t(&colorf->fg_color, &style->text[GTK_STATE_NORMAL]);
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colorf->c_colorfilter = NULL;
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colorf->edit_dialog = NULL;
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filter_list = g_slist_append(filter_list, colorf);
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return colorf;
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}
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/* delete the specified filter */
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void
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delete_color_filter(color_filter_t *colorf)
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{
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if (colorf->filter_name != NULL)
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g_free(colorf->filter_name);
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if (colorf->filter_text != NULL)
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g_free(colorf->filter_text);
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if (colorf->c_colorfilter != NULL)
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dfilter_free(colorf->c_colorfilter);
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filter_list = g_slist_remove(filter_list, colorf);
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g_free(colorf);
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}
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static void
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prime_edt(gpointer data, gpointer user_data)
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{
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color_filter_t *colorf = data;
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epan_dissect_t *edt = user_data;
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if (colorf->c_colorfilter != NULL)
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epan_dissect_prime_dfilter(edt, colorf->c_colorfilter);
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}
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/* Prime the epan_dissect_t with all the compiler
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* color filters in 'filter_list'. */
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void
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filter_list_prime_edt(epan_dissect_t *edt)
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{
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g_slist_foreach(filter_list, prime_edt, edt);
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}
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/* read filters from the file */
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static gboolean
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read_filters(void)
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{
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/* TODO: Lots more syntax checking on the file */
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/* I hate these fixed length names! TODO: make more dynamic */
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/* XXX - buffer overflow possibility here
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* sscanf blocks max size of name and filter_exp; buf is used for
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* reading only */
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gchar name[256],filter_exp[256], buf[1024];
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guint16 fg_r, fg_g, fg_b, bg_r, bg_g, bg_b;
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GdkColor fg_color, bg_color;
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color_filter_t *colorf;
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gchar *path;
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FILE *f;
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dfilter_t *temp_dfilter;
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/* decide what file to open (from dfilter code) */
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path = get_persconffile_path("colorfilters", FALSE);
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if ((f = fopen(path, "r")) == NULL) {
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if (errno != ENOENT) {
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simple_dialog(ESD_TYPE_CRIT, NULL,
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"Could not open filter file\n\"%s\": %s.", path,
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strerror(errno));
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}
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g_free((gchar *)path);
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return FALSE;
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}
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g_free((gchar *)path);
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path = NULL;
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do {
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if (fgets(buf,sizeof buf, f) == NULL)
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break;
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if (strspn(buf," \t") == (size_t)((strchr(buf,'*') - buf))) {
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/* leading # comment */
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continue;
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}
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/* we get the @ delimiter. It is not in any strings
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* Format is:
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* @name@filter expression@[background r,g,b][foreground r,g,b]
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*/
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if (sscanf(buf," @%256[^@]@%256[^@]@[%hu,%hu,%hu][%hu,%hu,%hu]",
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name, filter_exp, &bg_r, &bg_g, &bg_b, &fg_r, &fg_g, &fg_b)
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== 8) {
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/* we got a filter */
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if (!dfilter_compile(filter_exp, &temp_dfilter)) {
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simple_dialog(ESD_TYPE_CRIT, NULL,
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"Could not compile color filter %s from saved filters.\n%s",
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name, dfilter_error_msg);
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continue;
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}
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if (!get_color(&fg_color)) {
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/* oops */
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simple_dialog(ESD_TYPE_CRIT, NULL,
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"Could not allocate foreground color "
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"specified in input file for %s.", name);
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dfilter_free(temp_dfilter);
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continue;
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}
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if (!get_color(&bg_color)) {
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/* oops */
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simple_dialog(ESD_TYPE_CRIT, NULL,
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"Could not allocate background color "
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"specified in input file for %s.", name);
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dfilter_free(temp_dfilter);
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continue;
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}
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colorf = new_color_filter(name, filter_exp);
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colorf->c_colorfilter = temp_dfilter;
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fg_color.red = fg_r;
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fg_color.green = fg_g;
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fg_color.blue = fg_b;
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bg_color.red = bg_r;
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bg_color.green = bg_g;
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bg_color.blue = bg_b;
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gdkcolor_to_color_t(&colorf->bg_color, &bg_color);
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gdkcolor_to_color_t(&colorf->fg_color, &fg_color);
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} /* if sscanf */
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} while(!feof(f));
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return TRUE;
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}
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static void
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write_filter(gpointer filter_arg, gpointer file_arg)
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{
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color_filter_t *colorf = filter_arg;
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FILE *f = file_arg;
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fprintf(f,"@%s@%s@[%d,%d,%d][%d,%d,%d]\n",
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colorf->filter_name,
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colorf->filter_text,
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colorf->bg_color.red,
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colorf->bg_color.green,
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colorf->bg_color.blue,
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colorf->fg_color.red,
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colorf->fg_color.green,
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colorf->fg_color.blue);
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}
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/* save filters in filter file */
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gboolean
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write_filters(void)
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{
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gchar *pf_dir_path;
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const gchar *path;
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FILE *f;
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/* Create the directory that holds personal configuration files,
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if necessary. */
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if (create_persconffile_dir(&pf_dir_path) == -1) {
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simple_dialog(ESD_TYPE_WARN, NULL,
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"Can't create directory\n\"%s\"\nfor color files: %s.",
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pf_dir_path, strerror(errno));
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g_free(pf_dir_path);
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return FALSE;
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}
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path = get_persconffile_path("colorfilters", TRUE);
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if ((f = fopen(path, "w+")) == NULL) {
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simple_dialog(ESD_TYPE_CRIT, NULL,
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"Could not open\n%s\nfor writing: %s.",
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path, strerror(errno));
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return FALSE;
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}
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fprintf(f,"# DO NOT EDIT THIS FILE! It was created by Ethereal\n");
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g_slist_foreach(filter_list, write_filter, f);
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fclose(f);
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return TRUE;
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}
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