315 lines
7.9 KiB
C
315 lines
7.9 KiB
C
/* colors.c
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* Definitions for color structures and routines
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*
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* $Id: colors.c,v 1.9 2001/04/24 00:28:21 guy Exp $
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*
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* Ethereal - Network traffic analyzer
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* By Gerald Combs <gerald@zing.org>
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* Copyright 1998 Gerald Combs
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*
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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 <gtk/gtk.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <errno.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.h>
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#include <epan/filesystem.h>
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#include "gtk/main.h"
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#include "packet.h"
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#include "colors.h"
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#include "file.h"
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#include "dfilter/dfilter.h"
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#include "simple_dialog.h"
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extern capture_file cf;
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static gboolean read_filters(colfilter *filter);
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GSList *filter_list;
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static GdkColormap* sys_cmap;
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static GdkColormap* our_cmap = NULL;
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GdkColor WHITE = { 0, 65535, 65535, 65535 };
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GdkColor BLACK = { 0, 0, 0, 0 };
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/* This structure is used to allow you to compile in default colors if
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* you wish. They can be later changed by a user.
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*/
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#ifdef READ_DEFAULT_COLOR_LIST
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struct _default_colors {
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gchar* proto;
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gchar* color; /* background only */
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} default_colors[] = {
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{"arp", "green2"},
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{"ip", "light red"},
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{"tcp", "light blue"}
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};
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#endif
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colfilter *
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colfilter_new(void)
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{
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colfilter *filter;
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gboolean got_white, got_black;
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#ifdef READ_DEFAULT_COLOR_LIST
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color_filter_t *colorf;
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gint i;
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GdkColor color;
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#endif
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filter = (colfilter *)g_malloc(sizeof(colfilter));
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filter->num_of_filters = 0;
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sys_cmap = gdk_colormap_get_system();
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/* Allocate "constant" colors. */
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got_white = get_color(&WHITE);
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got_black = get_color(&BLACK);
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/* Got milk? */
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if (!got_white) {
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if (!got_black)
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simple_dialog(ESD_TYPE_WARN, NULL, "Could not allocate colors black or white.");
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else
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simple_dialog(ESD_TYPE_WARN, NULL, "Could not allocate color white.");
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} else {
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if (!got_black)
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simple_dialog(ESD_TYPE_WARN, NULL, "Could not allocate color black.");
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}
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#ifdef READ_DEFAULT_COLOR_LIST
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/* Now process defaults */
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for (i = 0 ; i < sizeof default_colors/sizeof (struct _default_colors); i++){
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gdk_color_parse(default_colors[i].color, &color);
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if( !get_color(&color)){
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/* oops */
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simple_dialog(ESD_TYPE_WARN, NULL, "Could not allocate color %s.",
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default_colors[i].color);
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}
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colorf = new_color_filter(filter, default_colors[i].proto,
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default_colors[i].proto);
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colorf->bg_color = color;
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if (!dfilter_compile(default_colors[i].proto,
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&colorf->c_colorfilter)) {
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simple_dialog(ESD_TYPE_WARN, NULL,
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"Cannot compile default color filter %s.\n%s",
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default_colors[i].proto, dfilter_error_msg);
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/* should reject this filter */
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}
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filter->num_of_filters++;
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}
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#endif
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read_filters(filter);
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return filter;
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}
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color_filter_t *
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new_color_filter(colfilter *filters, gchar *name, gchar *filter_string)
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{
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color_filter_t *colorf;
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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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colorf->bg_color = WHITE;
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colorf->fg_color = BLACK;
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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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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 gboolean
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read_filters(colfilter *filter)
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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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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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int i;
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FILE *f;
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gchar *path;
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gchar *fname = PF_DIR "/colorfilters";
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dfilter_t *temp_dfilter;
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/* decide what file to open (from dfilter code) */
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/* should only be called by colors_init.
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*/
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if(filter == NULL)
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return FALSE;
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/* we have a clist */
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path = (gchar *) g_malloc(strlen(get_home_dir()) + strlen(fname) + 4);
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sprintf(path, "%s/%s", get_home_dir(), fname);
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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(path);
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return FALSE;
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}
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g_free(path);
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i = 0;
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do{
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if(!fgets(buf,sizeof buf, f))
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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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if(sscanf(buf," @%[^@]@%[^@]@[%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) == 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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colorf = new_color_filter(filter, name, filter_exp);
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colorf->c_colorfilter = temp_dfilter;
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filter->num_of_filters++;
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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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if( !get_color(&fg_color)){
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/* oops */
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simple_dialog(ESD_TYPE_WARN, NULL, "Could not allocate fg color specified"
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"in input file for %s.", name);
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i++;
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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_WARN, NULL, "Could not allocate bg color specified"
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"in input file for %s.", name);
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i++;
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continue;
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}
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colorf->bg_color = bg_color;
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colorf->fg_color = fg_color;
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i++;
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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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gboolean
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write_filters(colfilter *filter)
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{
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FILE *f;
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gchar *path;
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gchar *name = PF_DIR "/colorfilters";
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/* decide what file to open (from dfilter code) */
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path = (gchar *) g_malloc(strlen(get_home_dir()) + strlen(name) + 4);
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sprintf(path, "%s/%s", get_home_dir(), name);
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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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g_free(path);
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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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g_free(path);
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return TRUE;
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}
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gboolean
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get_color (GdkColor *new_color)
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{
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GdkVisual *pv;
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if (!our_cmap) {
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if ( !gdk_colormap_alloc_color (sys_cmap, new_color, FALSE, TRUE)) {
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pv = gdk_visual_get_best();
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if ( !(our_cmap = gdk_colormap_new(pv, TRUE)))
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simple_dialog(ESD_TYPE_WARN, NULL, "Could not create new colormap");
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} else
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return (TRUE);
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}
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return ( gdk_colormap_alloc_color ( our_cmap, new_color, FALSE, TRUE) );
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}
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