forked from osmocom/wireshark
![Guy Harris](/assets/img/avatar_default.png)
"epan/..." pathnames, so as to avoid collisions with header files in any of the directories in which we look (e.g., "proto.h", as some other package has its own "proto.h" file which it installs in the top-level include directory). Don't add "-I" flags to search "epan", as that's no longer necessary (and we want includes of "epan" headers to fail if the "epan/" is left out, so that we don't re-introduce includes lacking "epan/"). svn path=/trunk/; revision=4586
307 lines
7.9 KiB
C
307 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 1.19 2002/01/21 07:37:41 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 <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/filesystem.h>
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#include "gtk/main.h"
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#include <epan/packet.h>
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#include "colors.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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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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/* Initialize the filter structures (reading from file) */
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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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/* Create the filter header */
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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,
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"Could not allocate colors black or white.");
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else
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simple_dialog(ESD_TYPE_WARN, NULL,
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"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,
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"Could not allocate color black.");
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}
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read_filters(filter);
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return filter;
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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(colfilter *filters, /* The filter list (unused) */
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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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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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/* 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(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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* 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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const 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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/* should only be called by colors_init */
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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 = 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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return FALSE;
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}
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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(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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colorf->bg_color = bg_color;
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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(colfilter *filter)
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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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/* allocate a color from the color map */
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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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