[GTPv2] Throttling Delay unit values are not the same as the timer values,
[metze/wireshark/wip.git] / color_filters.c
index 67cd5c1af9031a0ee7bfd1759be314d4a935d9ac..0cb8e6b57a542e6b55dce57fddc820526987c244 100644 (file)
@@ -1,10 +1,8 @@
 /* color_filters.c
  * Routines for color filters
  *
- * $Id$
- *
- * Ethereal - Network traffic analyzer
- * By Gerald Combs <gerald@ethereal.com>
+ * 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
  *
  * 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.
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  */
 /*
  * Updated 1 Dec 10 jjm
  */
-#ifdef HAVE_CONFIG_H
-# include "config.h"
-#endif
+
+#include <config.h>
 
 #include <glib.h>
-#include <ctype.h>
+
+#include <stdio.h>
+#include <stdlib.h>
 #include <string.h>
 
-#include <epan/filesystem.h>
+#include <wsutil/filesystem.h>
+#include <wsutil/file_util.h>
 
 #include <epan/packet.h>
 #include "color.h"
 #include "color_filters.h"
 #include "file.h"
 #include <epan/dfilter/dfilter.h>
-#include "simple_dialog.h"
+#include <epan/prefs.h>
+
+#include "ui/simple_dialog.h"
+#include "ui/ui_util.h"
 
-static gboolean read_filters(void);
-static gboolean read_global_filters(void);
+#define RED_COMPONENT(x)   (guint16) (((((x) >> 16) & 0xff) * 65535 / 255))
+#define GREEN_COMPONENT(x) (guint16) (((((x) >>  8) & 0xff) * 65535 / 255))
+#define BLUE_COMPONENT(x)  (guint16) ( (((x)        & 0xff) * 65535 / 255))
 
-GSList *filter_list = NULL;
-GSList *removed_filter_list = NULL;
+static gboolean read_users_filters(GSList **cfl);
 
-/* Remove the specified filter from the list of existing color filters,
- * and add it to the list of removed color filters.
- * This way, unmarking and marking a packet which matches a now removed
- * color filter will still be colored correctly as the color filter is
- * still reachable. */
-void remove_color_filter(color_filter_t *colorf)
+/* the currently active filters */
+static GSList *color_filter_list = NULL;
+
+/* keep "old" deleted filters in this list until
+ * the dissection no longer needs them (e.g. file is closed) */
+static GSList *color_filter_deleted_list = NULL;
+static GSList *color_filter_valid_list   = NULL;
+
+/* Color Filters can en-/disabled. */
+static gboolean filters_enabled = TRUE;
+
+/* Remember if there are temporary coloring filters set to
+ * add sensitivity to the "Reset Coloring 1-10" menu item
+ */
+static gboolean tmp_colors_set = FALSE;
+
+/* Create a new filter */
+color_filter_t *
+color_filter_new(const gchar *name,          /* The name of the filter to create */
+                 const gchar *filter_string, /* The string representing the filter */
+                 color_t     *bg_color,      /* The background color */
+                 color_t     *fg_color,      /* The foreground color */
+                 gboolean     disabled)      /* Is the filter disabled? */
 {
-       /* Remove colorf from the list of color filters */
-       filter_list = g_slist_remove(filter_list, colorf);
-       /* Add colorf to the list of removed color filters */
-       removed_filter_list = g_slist_prepend(removed_filter_list, colorf);
+    color_filter_t *colorf;
+
+    colorf                      = (color_filter_t *)g_malloc0(sizeof (color_filter_t));
+    colorf->filter_name         = g_strdup(name);
+    colorf->filter_text         = g_strdup(filter_string);
+    colorf->bg_color            = *bg_color;
+    colorf->fg_color            = *fg_color;
+    colorf->disabled            = disabled;
+    return colorf;
 }
 
-/* delete the specified filter */
+/* Add ten empty (temporary) colorfilters for easy coloring */
 static void
-delete_color_filter(color_filter_t *colorf)
+color_filters_add_tmp(GSList **cfl)
+{
+    gchar          *name = NULL;
+    guint32         i;
+    gchar**         bg_colors;
+    gchar**         fg_colors;
+    gulong          cval;
+    color_t         bg_color, fg_color;
+    color_filter_t *colorf;
+
+    g_assert(strlen(prefs.gui_colorized_fg)==69);
+    g_assert(strlen(prefs.gui_colorized_bg)==69);
+    fg_colors = g_strsplit(prefs.gui_colorized_fg, ",", -1);
+    bg_colors = g_strsplit(prefs.gui_colorized_bg, ",", -1);
+
+    for ( i=1 ; i<=10 ; i++ ) {
+        name = g_strdup_printf("%s%02d",CONVERSATION_COLOR_PREFIX,i);
+
+        /* retrieve background and foreground colors */
+        cval = strtoul(fg_colors[i-1], NULL, 16);
+        initialize_color(&fg_color, RED_COMPONENT(cval),
+                         GREEN_COMPONENT(cval),
+                         BLUE_COMPONENT(cval) );
+        cval = strtoul(bg_colors[i-1], NULL, 16);
+        initialize_color(&bg_color, RED_COMPONENT(cval),
+                         GREEN_COMPONENT(cval),
+                         BLUE_COMPONENT(cval) );
+        colorf = color_filter_new(name, NULL, &bg_color, &fg_color, TRUE);
+        colorf->filter_text = g_strdup("frame");
+        *cfl = g_slist_append(*cfl, colorf);
+
+        g_free(name);
+    }
+
+    g_strfreev(fg_colors);
+    g_strfreev(bg_colors);
+
+    return;
+}
+
+static gint
+color_filters_find_by_name_cb(gconstpointer arg1, gconstpointer arg2)
+{
+    const color_filter_t *colorf = (const color_filter_t *)arg1;
+    const gchar          *name   = (const gchar *)arg2;
+
+    return (strstr(colorf->filter_name, name)==NULL) ? -1 : 0 ;
+}
+
+
+/* Set the filter off a temporary colorfilters and enable it */
+void
+color_filters_set_tmp(guint8 filt_nr, gchar *filter, gboolean disabled)
+{
+    gchar          *name = NULL;
+    const gchar    *tmpfilter = NULL;
+    GSList         *cfl;
+    color_filter_t *colorf;
+    dfilter_t      *compiled_filter;
+    gchar          *err_msg;
+    guint8         i;
+
+    /* Go through the tomporary filters and look for the same filter string.
+     * If found, clear it so that a filter can be "moved" up and down the list
+     */
+    for ( i=1 ; i<=10 ; i++ ) {
+        /* If we need to reset the temporary filter (filter==NULL), don't look
+         * for other rules with the same filter string
+         */
+        if( i!=filt_nr && filter==NULL )
+            continue;
+
+        name = g_strdup_printf("%s%02d",CONVERSATION_COLOR_PREFIX,i);
+        cfl = g_slist_find_custom(color_filter_list, name, color_filters_find_by_name_cb);
+        colorf = (color_filter_t *)cfl->data;
+
+        /* Only change the filter rule if this is the rule to change or if
+         * a matching filter string has been found
+         */
+        if(colorf && ( (i==filt_nr) || (strstr(filter,colorf->filter_text)!=NULL) ) ) {
+            /* set filter string to "frame" if we are resetting the rules
+             * or if we found a matching filter string which need to be cleared
+             */
+            tmpfilter = ( (filter==NULL) || (i!=filt_nr) ) ? "frame" : filter;
+            if (!dfilter_compile(tmpfilter, &compiled_filter, &err_msg)) {
+                simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK,
+                              "Could not compile color filter name: \"%s\""
+                              " text: \"%s\".\n%s", name, filter, err_msg);
+                g_free(err_msg);
+            } else {
+                if (colorf->filter_text != NULL)
+                    g_free(colorf->filter_text);
+                if (colorf->c_colorfilter != NULL)
+                    dfilter_free(colorf->c_colorfilter);
+                colorf->filter_text = g_strdup(tmpfilter);
+                colorf->c_colorfilter = compiled_filter;
+                colorf->disabled = ((i!=filt_nr) ? TRUE : disabled);
+                /* Remember that there are now temporary coloring filters set */
+                if( filter )
+                    tmp_colors_set = TRUE;
+            }
+        }
+        g_free(name);
+    }
+    return;
+}
+
+/* Reset the temporary colorfilters */
+void
+color_filters_reset_tmp(void)
+{
+    guint8 i;
+
+    for ( i=1 ; i<=10 ; i++ ) {
+        color_filters_set_tmp(i, NULL, TRUE);
+    }
+    /* Remember that there are now *no* temporary coloring filters set */
+    tmp_colors_set = FALSE;
+    return;
+}
+
+/* delete the specified filter */
+void
+color_filter_delete(color_filter_t *colorf)
 {
-       if (colorf->filter_name != NULL)
-               g_free(colorf->filter_name);
-       if (colorf->filter_text != NULL)
-               g_free(colorf->filter_text);
-       if (colorf->c_colorfilter != NULL)
-               dfilter_free(colorf->c_colorfilter);
-       g_free(colorf);
+    if (colorf->filter_name != NULL)
+        g_free(colorf->filter_name);
+    if (colorf->filter_text != NULL)
+        g_free(colorf->filter_text);
+    if (colorf->c_colorfilter != NULL)
+        dfilter_free(colorf->c_colorfilter);
+    g_free(colorf);
 }
 
-/* delete the specified filter as an iterator*/
+/* delete the specified filter (called from g_slist_foreach) */
 static void
-delete_color_filter_it(gpointer filter_arg, gpointer unused _U_)
+color_filter_delete_cb(gpointer filter_arg, gpointer unused _U_)
 {
-       color_filter_t *colorf = filter_arg;
-       delete_color_filter(colorf);
+    color_filter_t *colorf = (color_filter_t *)filter_arg;
+
+    color_filter_delete(colorf);
+}
+
+/* delete the specified list */
+void
+color_filter_list_delete(GSList **cfl)
+{
+    g_slist_foreach(*cfl, color_filter_delete_cb, NULL);
+    g_slist_free(*cfl);
+    *cfl = NULL;
+}
+
+/* clone a single list entries from normal to edit list */
+static color_filter_t *
+color_filter_clone(color_filter_t *colorf)
+{
+    color_filter_t *new_colorf;
+
+    new_colorf                      = (color_filter_t *)g_malloc(sizeof (color_filter_t));
+    new_colorf->filter_name         = g_strdup(colorf->filter_name);
+    new_colorf->filter_text         = g_strdup(colorf->filter_text);
+    new_colorf->bg_color            = colorf->bg_color;
+    new_colorf->fg_color            = colorf->fg_color;
+    new_colorf->disabled            = colorf->disabled;
+    new_colorf->c_colorfilter       = NULL;
+    new_colorf->color_edit_dlg_info = NULL;
+    new_colorf->selected            = FALSE;
+
+    return new_colorf;
 }
 
-/* delete all the filters */
 static void
-delete_all_color_filters (void)
+color_filter_list_clone_cb(gpointer filter_arg, gpointer cfl_arg)
 {
-        g_slist_foreach(filter_list, delete_color_filter_it, NULL);
-       g_slist_free(filter_list);
-       filter_list = NULL;
-        g_slist_foreach(removed_filter_list, delete_color_filter_it, NULL);
-       g_slist_free(removed_filter_list);
-       removed_filter_list = NULL;
+    GSList **cfl = (GSList **)cfl_arg;
+    color_filter_t *new_colorf;
+
+    new_colorf = color_filter_clone((color_filter_t *)filter_arg);
+    *cfl = g_slist_append(*cfl, new_colorf);
+}
+
+/* clone the specified list */
+static GSList *
+color_filter_list_clone(GSList *cfl)
+{
+    GSList *new_list = NULL;
+
+    g_slist_foreach(cfl, color_filter_list_clone_cb, &new_list);
+
+    return new_list;
 }
 
 /* Initialize the filter structures (reading from file) for general running, including app startup */
 void
-colfilter_init(void)
+color_filters_init(void)
+{
+    /* delete all currently existing filters */
+    color_filter_list_delete(&color_filter_list);
+
+    /* start the list with the temporary colorizing rules */
+    color_filters_add_tmp(&color_filter_list);
+
+    /* try to read the users filters */
+    if (!read_users_filters(&color_filter_list))
+        /* if that failed, try to read the global filters */
+        color_filters_read_globals(&color_filter_list);
+}
+
+void
+color_filters_reload(void)
 {
-       delete_all_color_filters();
-       if (!read_filters())
-               read_global_filters();
+    /* "move" old entries to the deleted list
+     * we must keep them until the dissection no longer needs them */
+    color_filter_deleted_list = g_slist_concat(color_filter_deleted_list, color_filter_list);
+    color_filter_list = NULL;
+
+    /* start the list with the temporary colorizing rules */
+    color_filters_add_tmp(&color_filter_list);
+
+    /* try to read the users filters */
+    if (!read_users_filters(&color_filter_list))
+        /* if that failed, try to read the global filters */
+        color_filters_read_globals(&color_filter_list);
 }
 
-/* Create a new filter */
-color_filter_t *
-new_color_filter(gchar *name,          /* The name of the filter to create */
-                 gchar *filter_string, /* The string representing the filter */
-                 color_t *bg_color,    /* The background color */
-                 color_t *fg_color)    /* The foreground color */
+void
+color_filters_cleanup(void)
+{
+    /* delete the previously deleted filters */
+    color_filter_list_delete(&color_filter_deleted_list);
+}
+
+static void
+color_filters_clone_cb(gpointer filter_arg, gpointer user_data)
+{
+    color_filter_t * new_colorf = color_filter_clone((color_filter_t *)filter_arg);
+    color_filter_add_cb (new_colorf, user_data);
+}
+
+void
+color_filters_clone(gpointer user_data)
+{
+    g_slist_foreach(color_filter_list, color_filters_clone_cb, user_data);
+}
+
+
+static void
+color_filter_compile_cb(gpointer filter_arg, gpointer unused _U_)
+{
+    color_filter_t *colorf = (color_filter_t *)filter_arg;
+    gchar *err_msg;
+
+    g_assert(colorf->c_colorfilter == NULL);
+    if (!dfilter_compile(colorf->filter_text, &colorf->c_colorfilter, &err_msg)) {
+        simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK,
+                      "Could not compile color filter name: \"%s\" text: \"%s\".\n%s",
+                      colorf->filter_name, colorf->filter_text, err_msg);
+        g_free(err_msg);
+        /* this filter was compilable before, so this should never happen */
+        /* except if the OK button of the parent window has been clicked */
+        /* so don't use g_assert_not_reached() but check the filters again */
+    }
+}
+
+static void
+color_filter_validate_cb(gpointer filter_arg, gpointer unused _U_)
+{
+    color_filter_t *colorf = (color_filter_t *)filter_arg;
+    gchar *err_msg;
+
+    g_assert(colorf->c_colorfilter == NULL);
+    if (!dfilter_compile(colorf->filter_text, &colorf->c_colorfilter, &err_msg)) {
+        simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK,
+                      "Removing color filter name: \"%s\" text: \"%s\".\n%s",
+                      colorf->filter_name, colorf->filter_text, err_msg);
+        g_free(err_msg);
+        /* Delete the color filter from the list of color filters. */
+        color_filter_valid_list = g_slist_remove(color_filter_valid_list, colorf);
+        color_filter_delete(colorf);
+    }
+}
+
+/* apply changes from the edit list */
+void
+color_filters_apply(GSList *tmp_cfl, GSList *edit_cfl)
+{
+    /* "move" old entries to the deleted list
+     * we must keep them until the dissection no longer needs them */
+    color_filter_deleted_list = g_slist_concat(color_filter_deleted_list, color_filter_list);
+    color_filter_list = NULL;
+
+    /* clone all list entries from tmp/edit to normal list */
+    color_filter_valid_list = NULL;
+    color_filter_valid_list = color_filter_list_clone(tmp_cfl);
+    color_filter_valid_list = g_slist_concat(color_filter_valid_list,
+                                             color_filter_list_clone(edit_cfl) );
+
+    /* compile all filter */
+    g_slist_foreach(color_filter_valid_list, color_filter_validate_cb, NULL);
+
+    /* clone all list entries from tmp/edit to normal list */
+    color_filter_list = color_filter_list_clone(color_filter_valid_list);
+
+    /* compile all filter */
+    g_slist_foreach(color_filter_list, color_filter_compile_cb, NULL);
+}
+
+gboolean
+color_filters_used(void)
 {
-       color_filter_t *colorf;
+    return color_filter_list != NULL && filters_enabled;
+}
 
-       colorf = g_malloc(sizeof (color_filter_t));
-       colorf->filter_name = g_strdup(name);
-       colorf->filter_text = g_strdup(filter_string);
-       colorf->bg_color = *bg_color;
-       colorf->fg_color = *fg_color;
-       colorf->c_colorfilter = NULL;
-       colorf->edit_dialog = NULL;
-       colorf->marked = FALSE;
-       filter_list = g_slist_append(filter_list, colorf);
-        return colorf;
+gboolean
+tmp_color_filters_used(void)
+{
+    return tmp_colors_set;
 }
 
+void
+color_filters_enable(gboolean enable)
+{
+    packet_list_enable_color(enable);
+}
+
+
+/* prepare the epan_dissect_t for the filter */
 static void
 prime_edt(gpointer data, gpointer user_data)
 {
-       color_filter_t  *colorf = data;
-       epan_dissect_t   *edt = user_data;
+    color_filter_t *colorf = (color_filter_t *)data;
+    epan_dissect_t *edt    = (epan_dissect_t *)user_data;
 
-       if (colorf->c_colorfilter != NULL)
-               epan_dissect_prime_dfilter(edt, colorf->c_colorfilter);
+    if (colorf->c_colorfilter != NULL)
+        epan_dissect_prime_dfilter(edt, colorf->c_colorfilter);
 }
 
 /* Prime the epan_dissect_t with all the compiler
- * color filters in 'filter_list'. */
+ * color filters in 'color_filter_list'. */
 void
-filter_list_prime_edt(epan_dissect_t *edt)
+color_filters_prime_edt(epan_dissect_t *edt)
 {
-       g_slist_foreach(filter_list, prime_edt, edt);
+    if (color_filters_used())
+        g_slist_foreach(color_filter_list, prime_edt, edt);
+}
+
+/* * Return the color_t for later use */
+const color_filter_t *
+color_filters_colorize_packet(epan_dissect_t *edt)
+{
+    GSList         *curr;
+    color_filter_t *colorf;
+
+    /* If we have color filters, "search" for the matching one. */
+    if (color_filters_used()) {
+        curr = color_filter_list;
+
+        while(curr != NULL) {
+            colorf = (color_filter_t *)curr->data;
+            if ( (!colorf->disabled) &&
+                 (colorf->c_colorfilter != NULL) &&
+                 dfilter_apply_edt(colorf->c_colorfilter, edt)) {
+                return colorf;
+            }
+            curr = g_slist_next(curr);
+        }
+    }
+
+    return NULL;
 }
 
 /* read filters from the given file */
+/* XXX - Would it make more sense to use GStrings here instead of reallocing
+   our buffers? */
 static gboolean
-read_filters_file(FILE *f, gpointer arg)
+read_filters_file(FILE *f, gpointer user_data)
 {
 #define INIT_BUF_SIZE 128
-       gchar  *name = NULL;
-       gchar  *filter_exp = NULL;
-       guint32 name_len = INIT_BUF_SIZE;
-       guint32 filter_exp_len = INIT_BUF_SIZE;
-       guint32 i = 0;
-       gint32  c;
-       guint16 fg_r, fg_g, fg_b, bg_r, bg_g, bg_b;
-       gboolean skip_end_of_line = FALSE;
-
-       name = g_malloc(name_len + 1);
-       filter_exp = g_malloc(filter_exp_len + 1);
-
-       while (1) {
-
-               if (skip_end_of_line) {
-                       do {
-                               c = getc(f);
-                       } while (c != EOF && c != '\n');
-                       if (c == EOF)
-                               break;
-                       skip_end_of_line = FALSE;
-               }
-
-               while ((c = getc(f)) != EOF && isspace(c)) {
-                       if (c == '\n') {
-                               continue;
-                       }
-               }
-
-               if (c == EOF)
-                       break;
-
-               /* skip # comments and invalid lines */
-               if (c != '@') { 
-                       skip_end_of_line = TRUE;
-                       continue;
-               }
-
-               /* we get the @ delimiter.
-                * Format is:
-                * @name@filter expression@[background r,g,b][foreground r,g,b]
-                */
-
-               /* retrieve name */
-               i = 0;
-               while (1) {
-                       c = getc(f);
-                       if (c == EOF || c == '@')
-                               break;
-                       if (i >= name_len) {
-                               /* buffer isn't long enough; double its length.*/
-                               name_len *= 2;
-                               name = g_realloc(name, name_len + 1);
-                       }
-                       name[i++] = c;            
-               }
-               name[i] = '\0';
-
-               if (c == EOF) {
-                       break;
-               } else if (i == 0) {
-                       skip_end_of_line = TRUE;
-                       continue;
-               }
-
-               /* retrieve filter expression */
-               i = 0;
-               while (1) {
-                       c = getc(f);
-                       if (c == EOF || c == '@')
-                               break;
-                       if (i >= filter_exp_len) {
-                               /* buffer isn't long enough; double its length.*/
-                               filter_exp_len *= 2;
-                               filter_exp = g_realloc(filter_exp, filter_exp_len + 1);
-                       }
-                       filter_exp[i++] = c;
-               }
-               filter_exp[i] = '\0';
-
-               if (c == EOF) {
-                       break;
-               } else if (i == 0) {
-                       skip_end_of_line = TRUE;
-                       continue;
-               }
-
-               /* retrieve background and foreground colors */
-               if (fscanf(f,"[%hu,%hu,%hu][%hu,%hu,%hu]",
-                       &bg_r, &bg_g, &bg_b, &fg_r, &fg_g, &fg_b) == 6) {
-
-                       /* we got a complete color filter */
-
-                       color_t bg_color, fg_color;
-                       color_filter_t *colorf;
-                       dfilter_t *temp_dfilter;
-
-                       if (!dfilter_compile(filter_exp, &temp_dfilter)) {
-                               simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK,
-                               "Could not compile color filter %s from saved filters.\n%s",
-                                             name, dfilter_error_msg);
-                               skip_end_of_line = TRUE;
-                               continue;
-                       }
-
-                       if (!create_color(&fg_color, fg_r, fg_g, fg_b)) {
-                               /* oops */
-                               simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK,
-                                   "Could not allocate foreground color "
-                                   "specified in input file for %s.", name);
-                               dfilter_free(temp_dfilter);
-                               skip_end_of_line = TRUE;
-                               continue;
-                       }
-                       if (!create_color(&bg_color, bg_r, bg_g, bg_b)) {
-                               /* oops */
-                               simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK,
-                                   "Could not allocate background color "
-                                   "specified in input file for %s.", name);
-                               dfilter_free(temp_dfilter);
-                               skip_end_of_line = TRUE;
-                               continue;
-                       }
-
-                       colorf = new_color_filter(name, filter_exp, &bg_color,
-                           &fg_color);
-                       colorf->c_colorfilter = temp_dfilter;
-
-                       if (arg != NULL)
-                               color_add_filter_cb (colorf, arg);
-               }    /* if sscanf */
-
-               skip_end_of_line = TRUE;
-       }
-
-       g_free(name);
-       g_free(filter_exp);
-       return TRUE;
+    gchar    *name             = NULL;
+    gchar    *filter_exp       = NULL;
+    guint32   name_len         = INIT_BUF_SIZE;
+    guint32   filter_exp_len   = INIT_BUF_SIZE;
+    guint32   i                = 0;
+    int       c;
+    guint16   fg_r, fg_g, fg_b, bg_r, bg_g, bg_b;
+    gboolean  disabled         = FALSE;
+    gboolean  skip_end_of_line = FALSE;
+
+    name = (gchar *)g_malloc(name_len + 1);
+    filter_exp = (gchar *)g_malloc(filter_exp_len + 1);
+
+    while (1) {
+
+        if (skip_end_of_line) {
+            do {
+                c = getc(f);
+            } while (c != EOF && c != '\n');
+            if (c == EOF)
+                break;
+            disabled = FALSE;
+            skip_end_of_line = FALSE;
+        }
+
+        while ((c = getc(f)) != EOF && g_ascii_isspace(c)) {
+            if (c == '\n') {
+                continue;
+            }
+        }
+
+        if (c == EOF)
+            break;
+
+        if (c == '!') {
+            disabled = TRUE;
+            continue;
+        }
+
+        /* skip # comments and invalid lines */
+        if (c != '@') {
+            skip_end_of_line = TRUE;
+            continue;
+        }
+
+        /* we get the @ delimiter.
+         * Format is:
+         * @name@filter expression@[background r,g,b][foreground r,g,b]
+         */
+
+        /* retrieve name */
+        i = 0;
+        while (1) {
+            c = getc(f);
+            if (c == EOF || c == '@')
+                break;
+            if (i >= name_len) {
+                /* buffer isn't long enough; double its length.*/
+                name_len *= 2;
+                name = (gchar *)g_realloc(name, name_len + 1);
+            }
+            name[i++] = c;
+        }
+        name[i] = '\0';
+
+        if (c == EOF) {
+            break;
+        } else if (i == 0) {
+            skip_end_of_line = TRUE;
+            continue;
+        }
+
+        /* retrieve filter expression */
+        i = 0;
+        while (1) {
+            c = getc(f);
+            if (c == EOF || c == '@')
+                break;
+            if (i >= filter_exp_len) {
+                /* buffer isn't long enough; double its length.*/
+                filter_exp_len *= 2;
+                filter_exp = (gchar *)g_realloc(filter_exp, filter_exp_len + 1);
+            }
+            filter_exp[i++] = c;
+        }
+        filter_exp[i] = '\0';
+
+        if (c == EOF) {
+            break;
+        } else if (i == 0) {
+            skip_end_of_line = TRUE;
+            continue;
+        }
+
+        /* retrieve background and foreground colors */
+        if (fscanf(f,"[%hu,%hu,%hu][%hu,%hu,%hu]",
+                   &bg_r, &bg_g, &bg_b, &fg_r, &fg_g, &fg_b) == 6) {
+
+            /* we got a complete color filter */
+
+            color_t bg_color, fg_color;
+            color_filter_t *colorf;
+            dfilter_t *temp_dfilter;
+            gchar *err_msg;
+
+            if (!dfilter_compile(filter_exp, &temp_dfilter, &err_msg)) {
+                g_warning("Could not compile \"%s\" in colorfilters file.\n%s",
+                          name, err_msg);
+                g_free(err_msg);
+                prefs.unknown_colorfilters = TRUE;
+
+                skip_end_of_line = TRUE;
+                continue;
+            }
+
+            if (!initialize_color(&fg_color, fg_r, fg_g, fg_b)) {
+                /* oops */
+                simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK,
+                              "Could not allocate foreground color "
+                              "specified in input file for %s.", name);
+                dfilter_free(temp_dfilter);
+                skip_end_of_line = TRUE;
+                continue;
+            }
+            if (!initialize_color(&bg_color, bg_r, bg_g, bg_b)) {
+                /* oops */
+                simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK,
+                              "Could not allocate background color "
+                              "specified in input file for %s.", name);
+                dfilter_free(temp_dfilter);
+                skip_end_of_line = TRUE;
+                continue;
+            }
+
+            colorf = color_filter_new(name, filter_exp, &bg_color,
+                                      &fg_color, disabled);
+            if(user_data == &color_filter_list) {
+                GSList **cfl = (GSList **)user_data;
+
+                /* internal call */
+                colorf->c_colorfilter = temp_dfilter;
+                *cfl = g_slist_append(*cfl, colorf);
+            } else {
+                /* external call */
+                /* just editing, don't need the compiled filter */
+                dfilter_free(temp_dfilter);
+                color_filter_add_cb (colorf, user_data);
+            }
+        }    /* if sscanf */
+
+        skip_end_of_line = TRUE;
+    }
+
+    g_free(name);
+    g_free(filter_exp);
+    return TRUE;
 }
 
 /* read filters from the user's filter file */
 static gboolean
-read_filters(void)
-{
-       gchar *path;
-       FILE *f;
-       gboolean ret;
-
-       /* decide what file to open (from dfilter code) */
-       path = get_persconffile_path("colorfilters", FALSE);
-       if ((f = fopen(path, "r")) == NULL) {
-               if (errno != ENOENT) {
-                       simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK,
-                           "Could not open filter file\n\"%s\": %s.", path,
-                           strerror(errno));
-               }
-               g_free(path);
-               return FALSE;
-       }
-       g_free(path);
-       path = NULL;
-
-       ret = read_filters_file(f, NULL);
-       fclose(f);
-       return ret;
+read_users_filters(GSList **cfl)
+{
+    gchar    *path;
+    FILE     *f;
+    gboolean  ret;
+
+    /* decide what file to open (from dfilter code) */
+    path = get_persconffile_path("colorfilters", TRUE);
+    if ((f = ws_fopen(path, "r")) == NULL) {
+        if (errno != ENOENT) {
+            simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK,
+                          "Could not open filter file\n\"%s\": %s.", path,
+                          g_strerror(errno));
+        }
+        g_free(path);
+        return FALSE;
+    }
+    g_free(path);
+    path = NULL;
+
+    ret = read_filters_file(f, cfl);
+    fclose(f);
+    return ret;
 }
 
 /* read filters from the filter file */
-static gboolean
-read_global_filters(void)
+gboolean
+color_filters_read_globals(gpointer user_data)
 {
-       gchar *path;
-       FILE *f;
-       gboolean ret;
-
-       /* decide what file to open (from dfilter code) */
-       path = get_datafile_path("colorfilters");
-       if ((f = fopen(path, "r")) == NULL) {
-               if (errno != ENOENT) {
-                       simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK,
-                           "Could not open global filter file\n\"%s\": %s.", path,
-                           strerror(errno));
-               }
-               g_free(path);
-               return FALSE;
-       }
-       g_free(path);
-       path = NULL;
-
-       ret = read_filters_file(f, NULL);
-       fclose(f);
-       return ret;
+    gchar    *path;
+    FILE     *f;
+    gboolean  ret;
+
+    /* decide what file to open (from dfilter code) */
+    path = get_datafile_path("colorfilters");
+    if ((f = ws_fopen(path, "r")) == NULL) {
+        if (errno != ENOENT) {
+            simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK,
+                          "Could not open global filter file\n\"%s\": %s.", path,
+                          g_strerror(errno));
+        }
+        g_free(path);
+        return FALSE;
+    }
+    g_free(path);
+    path = NULL;
+
+    ret = read_filters_file(f, user_data);
+    fclose(f);
+    return ret;
 }
 
-/* save filters in some other filter file */
-
+/* read filters from some other filter file (import) */
 gboolean
-read_other_filters(gchar *path, gpointer arg)
+color_filters_import(const gchar *path, const gpointer user_data)
 {
-       FILE *f;
-       gboolean ret;
-
-       if ((f = fopen(path, "r")) == NULL) {
-               simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK,
-                   "Could not open\n%s\nfor reading: %s.",
-                   path, strerror(errno));
-               return FALSE;
-       }
-
-       ret = read_filters_file(f, arg);
-       fclose(f);
-       return ret;
+    FILE     *f;
+    gboolean  ret;
+
+    if ((f = ws_fopen(path, "r")) == NULL) {
+        simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK,
+                      "Could not open\n%s\nfor reading: %s.",
+                      path, g_strerror(errno));
+        return FALSE;
+    }
+
+    ret = read_filters_file(f, user_data);
+    fclose(f);
+    return ret;
 }
 
 struct write_filter_data
 {
-  FILE * f;
-  gboolean only_marked;
+    FILE     *f;
+    gboolean  only_selected;
 };
 
+/* save a single filter */
 static void
 write_filter(gpointer filter_arg, gpointer data_arg)
 {
-       struct write_filter_data *data = data_arg;
-       color_filter_t *colorf = filter_arg;
-       FILE *f = data->f;
-
-       if (colorf->marked || !data->only_marked) {
-               fprintf(f,"@%s@%s@[%d,%d,%d][%d,%d,%d]\n",
-                   colorf->filter_name,
-                   colorf->filter_text,
-                   colorf->bg_color.red,
-                   colorf->bg_color.green,
-                   colorf->bg_color.blue,
-                   colorf->fg_color.red,
-                   colorf->fg_color.green,
-                   colorf->fg_color.blue);
-       }
+    struct write_filter_data *data = (struct write_filter_data *)data_arg;
+    color_filter_t *colorf = (color_filter_t *)filter_arg;
+    FILE *f = data->f;
+
+    if ( (colorf->selected || !data->only_selected) &&
+         (strstr(colorf->filter_name,CONVERSATION_COLOR_PREFIX)==NULL) ) {
+        fprintf(f,"%s@%s@%s@[%u,%u,%u][%u,%u,%u]\n",
+                colorf->disabled ? "!" : "",
+                colorf->filter_name,
+                colorf->filter_text,
+                colorf->bg_color.red,
+                colorf->bg_color.green,
+                colorf->bg_color.blue,
+                colorf->fg_color.red,
+                colorf->fg_color.green,
+                colorf->fg_color.blue);
+    }
 }
 
 /* save filters in a filter file */
-gboolean
-write_filters_file(FILE *f, gboolean only_marked)
+static gboolean
+write_filters_file(const GSList *cfl, FILE *f, gboolean only_selected)
 {
-       struct write_filter_data data;
+    struct write_filter_data data;
+
+    data.f = f;
+    data.only_selected = only_selected;
 
-       data.f = f;
-       data.only_marked = only_marked;
-  
-       fprintf(f,"# DO NOT EDIT THIS FILE!  It was created by Ethereal\n");
-        g_slist_foreach(filter_list, write_filter, &data);
-       return TRUE;
+    fprintf(f,"# DO NOT EDIT THIS FILE!  It was created by Wireshark\n");
+    g_slist_foreach((GSList *) cfl, write_filter, &data);
+    return TRUE;
 }
 
 /* save filters in users filter file */
-
-gboolean
-write_filters(void)
-{
-       gchar *pf_dir_path;
-       const gchar *path;
-       FILE *f;
-
-       /* Create the directory that holds personal configuration files,
-          if necessary.  */
-       if (create_persconffile_dir(&pf_dir_path) == -1) {
-               simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK,
-                   "Can't create directory\n\"%s\"\nfor color files: %s.",
-                   pf_dir_path, strerror(errno));
-               g_free(pf_dir_path);
-               return FALSE;
-       }
-
-       path = get_persconffile_path("colorfilters", TRUE);
-       if ((f = fopen(path, "w+")) == NULL) {
-               simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK,
-                   "Could not open\n%s\nfor writing: %s.",
-                   path, strerror(errno));
-               return FALSE;
-       }
-       write_filters_file(f, FALSE);
-       fclose(f);
-       return TRUE;
-}
-
-/* delete users filter file and reload global filters*/
-
 gboolean
-revert_filters(void)
+color_filters_write(GSList *cfl)
 {
-       gchar *pf_dir_path;
-       const gchar *path;
-
-       /* Create the directory that holds personal configuration files,
-          if necessary.  */
-       if (create_persconffile_dir(&pf_dir_path) == -1) {
-               simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK,
-                   "Can't create directory\n\"%s\"\nfor color files: %s.",
-                   pf_dir_path, strerror(errno));
-               g_free(pf_dir_path);
-               return FALSE;
-       }
-
-       path = get_persconffile_path("colorfilters", TRUE);
-       if (!deletefile(path)) {
-               g_free((gchar *)path);
-               return FALSE;
-       }
-
-       g_free((gchar *)path);
-
-       /* Reload the (global) filters - Note: this does not update the dialog. */
-       colfilter_init();
-        return TRUE;
+    gchar *pf_dir_path;
+    gchar *path;
+    FILE  *f;
+
+    /* Create the directory that holds personal configuration files,
+       if necessary.  */
+    if (create_persconffile_dir(&pf_dir_path) == -1) {
+        simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK,
+                      "Can't create directory\n\"%s\"\nfor color files: %s.",
+                      pf_dir_path, g_strerror(errno));
+        g_free(pf_dir_path);
+        return FALSE;
+    }
+
+    path = get_persconffile_path("colorfilters", TRUE);
+    if ((f = ws_fopen(path, "w+")) == NULL) {
+        simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK,
+                      "Could not open\n%s\nfor writing: %s.",
+                      path, g_strerror(errno));
+        g_free(path);
+        return FALSE;
+    }
+    g_free(path);
+    write_filters_file(cfl, f, FALSE);
+    fclose(f);
+    return TRUE;
 }
 
-
-/* save filters in some other filter file */
-
+/* save filters in some other filter file (export) */
 gboolean
-write_other_filters(gchar *path, gboolean only_marked)
+color_filters_export(const gchar *path, const GSList *cfl, gboolean only_marked)
 {
-       FILE *f;
-
-       if ((f = fopen(path, "w+")) == NULL) {
-               simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK,
-                   "Could not open\n%s\nfor writing: %s.",
-                   path, strerror(errno));
-               return FALSE;
-       }
-       write_filters_file(f, only_marked);
-       fclose(f);
-       return TRUE;
+    FILE *f;
+
+    if ((f = ws_fopen(path, "w+")) == NULL) {
+        simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK,
+                      "Could not open\n%s\nfor writing: %s.",
+                      path, g_strerror(errno));
+        return FALSE;
+    }
+    write_filters_file(cfl, f, only_marked);
+    fclose(f);
+    return TRUE;
 }
+
+/*
+ * Editor modelines  -  http://www.wireshark.org/tools/modelines.html
+ *
+ * Local variables:
+ * c-basic-offset: 4
+ * tab-width: 8
+ * indent-tabs-mode: nil
+ * End:
+ *
+ * vi: set shiftwidth=4 tabstop=8 expandtab:
+ * :indentSize=4:tabSize=8:noTabs=true:
+ */