color_filters.c

   1 /* color_filters.c
   2  * Routines for color filters
   3  *
   4  * Wireshark - Network traffic analyzer
   5  * By Gerald Combs <gerald@wireshark.org>
   6  * Copyright 1998 Gerald Combs
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License
  10  * as published by the Free Software Foundation; either version 2
  11  * of the License, or (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  21  */
  22 /*
  23  * Updated 1 Dec 10 jjm
  24  */
  25
  26 #include <config.h>
  27
  28 #include <glib.h>
  29
  30 #include <stdio.h>
  31 #include <stdlib.h>
  32 #include <string.h>
  33
  34 #include <wsutil/filesystem.h>
  35 #include <wsutil/file_util.h>
  36
  37 #include <epan/packet.h>
  38 #include "color.h"
  39 #include "color_filters.h"
  40 #include "file.h"
  41 #include <epan/dfilter/dfilter.h>
  42 #include <epan/prefs.h>
  43
  44 #include "ui/simple_dialog.h"
  45 #include "ui/ui_util.h"
  46
  47 #define RED_COMPONENT(x)   (guint16) (((((x) >> 16) & 0xff) * 65535 / 255))
  48 #define GREEN_COMPONENT(x) (guint16) (((((x) >>  8) & 0xff) * 65535 / 255))
  49 #define BLUE_COMPONENT(x)  (guint16) ( (((x)        & 0xff) * 65535 / 255))
  50
  51 static gboolean read_users_filters(GSList **cfl);
  52
  53 /* the currently active filters */
  54 static GSList *color_filter_list = NULL;
  55
  56 /* keep "old" deleted filters in this list until
  57  * the dissection no longer needs them (e.g. file is closed) */
  58 static GSList *color_filter_deleted_list = NULL;
  59 static GSList *color_filter_valid_list   = NULL;
  60
  61 /* Color Filters can en-/disabled. */
  62 static gboolean filters_enabled = TRUE;
  63
  64 /* Remember if there are temporary coloring filters set to
  65  * add sensitivity to the "Reset Coloring 1-10" menu item
  66  */
  67 static gboolean tmp_colors_set = FALSE;
  68
  69 /* Create a new filter */
  70 color_filter_t *
  71 color_filter_new(const gchar *name,          /* The name of the filter to create */
  72                  const gchar *filter_string, /* The string representing the filter */
  73                  color_t     *bg_color,      /* The background color */
  74                  color_t     *fg_color,      /* The foreground color */
  75                  gboolean     disabled)      /* Is the filter disabled? */
  76 {
  77     color_filter_t *colorf;
  78
  79     colorf                      = (color_filter_t *)g_malloc0(sizeof (color_filter_t));
  80     colorf->filter_name         = g_strdup(name);
  81     colorf->filter_text         = g_strdup(filter_string);
  82     colorf->bg_color            = *bg_color;
  83     colorf->fg_color            = *fg_color;
  84     colorf->disabled            = disabled;
  85     return colorf;
  86 }
  87
  88 /* Add ten empty (temporary) colorfilters for easy coloring */
  89 static void
  90 color_filters_add_tmp(GSList **cfl)
  91 {
  92     gchar          *name = NULL;
  93     guint32         i;
  94     gchar**         bg_colors;
  95     gchar**         fg_colors;
  96     gulong          cval;
  97     color_t         bg_color, fg_color;
  98     color_filter_t *colorf;
  99
 100     g_assert(strlen(prefs.gui_colorized_fg)==69);
 101     g_assert(strlen(prefs.gui_colorized_bg)==69);
 102     fg_colors = g_strsplit(prefs.gui_colorized_fg, ",", -1);
 103     bg_colors = g_strsplit(prefs.gui_colorized_bg, ",", -1);
 104
 105     for ( i=1 ; i<=10 ; i++ ) {
 106         name = g_strdup_printf("%s%02d",CONVERSATION_COLOR_PREFIX,i);
 107
 108         /* retrieve background and foreground colors */
 109         cval = strtoul(fg_colors[i-1], NULL, 16);
 110         initialize_color(&fg_color, RED_COMPONENT(cval),
 111                          GREEN_COMPONENT(cval),
 112                          BLUE_COMPONENT(cval) );
 113         cval = strtoul(bg_colors[i-1], NULL, 16);
 114         initialize_color(&bg_color, RED_COMPONENT(cval),
 115                          GREEN_COMPONENT(cval),
 116                          BLUE_COMPONENT(cval) );
 117         colorf = color_filter_new(name, NULL, &bg_color, &fg_color, TRUE);
 118         colorf->filter_text = g_strdup("frame");
 119         *cfl = g_slist_append(*cfl, colorf);
 120
 121         g_free(name);
 122     }
 123
 124     g_strfreev(fg_colors);
 125     g_strfreev(bg_colors);
 126
 127     return;
 128 }
 129
 130 static gint
 131 color_filters_find_by_name_cb(gconstpointer arg1, gconstpointer arg2)
 132 {
 133     const color_filter_t *colorf = (const color_filter_t *)arg1;
 134     const gchar          *name   = (const gchar *)arg2;
 135
 136     return (strstr(colorf->filter_name, name)==NULL) ? -1 : 0 ;
 137 }
 138
 139
 140 /* Set the filter off a temporary colorfilters and enable it */
 141 void
 142 color_filters_set_tmp(guint8 filt_nr, gchar *filter, gboolean disabled)
 143 {
 144     gchar          *name = NULL;
 145     const gchar    *tmpfilter = NULL;
 146     GSList         *cfl;
 147     color_filter_t *colorf;
 148     dfilter_t      *compiled_filter;
 149     gchar          *err_msg;
 150     guint8         i;
 151
 152     /* Go through the tomporary filters and look for the same filter string.
 153      * If found, clear it so that a filter can be "moved" up and down the list
 154      */
 155     for ( i=1 ; i<=10 ; i++ ) {
 156         /* If we need to reset the temporary filter (filter==NULL), don't look
 157          * for other rules with the same filter string
 158          */
 159         if( i!=filt_nr && filter==NULL )
 160             continue;
 161
 162         name = g_strdup_printf("%s%02d",CONVERSATION_COLOR_PREFIX,i);
 163         cfl = g_slist_find_custom(color_filter_list, name, color_filters_find_by_name_cb);
 164         colorf = (color_filter_t *)cfl->data;
 165
 166         /* Only change the filter rule if this is the rule to change or if
 167          * a matching filter string has been found
 168          */
 169         if(colorf && ( (i==filt_nr) || (strstr(filter,colorf->filter_text)!=NULL) ) ) {
 170             /* set filter string to "frame" if we are resetting the rules
 171              * or if we found a matching filter string which need to be cleared
 172              */
 173             tmpfilter = ( (filter==NULL) || (i!=filt_nr) ) ? "frame" : filter;
 174             if (!dfilter_compile(tmpfilter, &compiled_filter, &err_msg)) {
 175                 simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK,
 176                               "Could not compile color filter name: \"%s\""
 177                               " text: \"%s\".\n%s", name, filter, err_msg);
 178                 g_free(err_msg);
 179             } else {
 180                 if (colorf->filter_text != NULL)
 181                     g_free(colorf->filter_text);
 182                 if (colorf->c_colorfilter != NULL)
 183                     dfilter_free(colorf->c_colorfilter);
 184                 colorf->filter_text = g_strdup(tmpfilter);
 185                 colorf->c_colorfilter = compiled_filter;
 186                 colorf->disabled = ((i!=filt_nr) ? TRUE : disabled);
 187                 /* Remember that there are now temporary coloring filters set */
 188                 if( filter )
 189                     tmp_colors_set = TRUE;
 190             }
 191         }
 192         g_free(name);
 193     }
 194     return;
 195 }
 196
 197 /* Reset the temporary colorfilters */
 198 void
 199 color_filters_reset_tmp(void)
 200 {
 201     guint8 i;
 202
 203     for ( i=1 ; i<=10 ; i++ ) {
 204         color_filters_set_tmp(i, NULL, TRUE);
 205     }
 206     /* Remember that there are now *no* temporary coloring filters set */
 207     tmp_colors_set = FALSE;
 208     return;
 209 }
 210
 211 /* delete the specified filter */
 212 void
 213 color_filter_delete(color_filter_t *colorf)
 214 {
 215     if (colorf->filter_name != NULL)
 216         g_free(colorf->filter_name);
 217     if (colorf->filter_text != NULL)
 218         g_free(colorf->filter_text);
 219     if (colorf->c_colorfilter != NULL)
 220         dfilter_free(colorf->c_colorfilter);
 221     g_free(colorf);
 222 }
 223
 224 /* delete the specified filter (called from g_slist_foreach) */
 225 static void
 226 color_filter_delete_cb(gpointer filter_arg, gpointer unused _U_)
 227 {
 228     color_filter_t *colorf = (color_filter_t *)filter_arg;
 229
 230     color_filter_delete(colorf);
 231 }
 232
 233 /* delete the specified list */
 234 void
 235 color_filter_list_delete(GSList **cfl)
 236 {
 237     g_slist_foreach(*cfl, color_filter_delete_cb, NULL);
 238     g_slist_free(*cfl);
 239     *cfl = NULL;
 240 }
 241
 242 /* clone a single list entries from normal to edit list */
 243 static color_filter_t *
 244 color_filter_clone(color_filter_t *colorf)
 245 {
 246     color_filter_t *new_colorf;
 247
 248     new_colorf                      = (color_filter_t *)g_malloc(sizeof (color_filter_t));
 249     new_colorf->filter_name         = g_strdup(colorf->filter_name);
 250     new_colorf->filter_text         = g_strdup(colorf->filter_text);
 251     new_colorf->bg_color            = colorf->bg_color;
 252     new_colorf->fg_color            = colorf->fg_color;
 253     new_colorf->disabled            = colorf->disabled;
 254     new_colorf->c_colorfilter       = NULL;
 255     new_colorf->color_edit_dlg_info = NULL;
 256     new_colorf->selected            = FALSE;
 257
 258     return new_colorf;
 259 }
 260
 261 static void
 262 color_filter_list_clone_cb(gpointer filter_arg, gpointer cfl_arg)
 263 {
 264     GSList **cfl = (GSList **)cfl_arg;
 265     color_filter_t *new_colorf;
 266
 267     new_colorf = color_filter_clone((color_filter_t *)filter_arg);
 268     *cfl = g_slist_append(*cfl, new_colorf);
 269 }
 270
 271 /* clone the specified list */
 272 static GSList *
 273 color_filter_list_clone(GSList *cfl)
 274 {
 275     GSList *new_list = NULL;
 276
 277     g_slist_foreach(cfl, color_filter_list_clone_cb, &new_list);
 278
 279     return new_list;
 280 }
 281
 282 /* Initialize the filter structures (reading from file) for general running, including app startup */
 283 void
 284 color_filters_init(void)
 285 {
 286     /* delete all currently existing filters */
 287     color_filter_list_delete(&color_filter_list);
 288
 289     /* start the list with the temporary colorizing rules */
 290     color_filters_add_tmp(&color_filter_list);
 291
 292     /* try to read the users filters */
 293     if (!read_users_filters(&color_filter_list))
 294         /* if that failed, try to read the global filters */
 295         color_filters_read_globals(&color_filter_list);
 296 }
 297
 298 void
 299 color_filters_reload(void)
 300 {
 301     /* "move" old entries to the deleted list
 302      * we must keep them until the dissection no longer needs them */
 303     color_filter_deleted_list = g_slist_concat(color_filter_deleted_list, color_filter_list);
 304     color_filter_list = NULL;
 305
 306     /* start the list with the temporary colorizing rules */
 307     color_filters_add_tmp(&color_filter_list);
 308
 309     /* try to read the users filters */
 310     if (!read_users_filters(&color_filter_list))
 311         /* if that failed, try to read the global filters */
 312         color_filters_read_globals(&color_filter_list);
 313 }
 314
 315 void
 316 color_filters_cleanup(void)
 317 {
 318     /* delete the previously deleted filters */
 319     color_filter_list_delete(&color_filter_deleted_list);
 320 }
 321
 322 static void
 323 color_filters_clone_cb(gpointer filter_arg, gpointer user_data)
 324 {
 325     color_filter_t * new_colorf = color_filter_clone((color_filter_t *)filter_arg);
 326     color_filter_add_cb (new_colorf, user_data);
 327 }
 328
 329 void
 330 color_filters_clone(gpointer user_data)
 331 {
 332     g_slist_foreach(color_filter_list, color_filters_clone_cb, user_data);
 333 }
 334
 335
 336 static void
 337 color_filter_compile_cb(gpointer filter_arg, gpointer unused _U_)
 338 {
 339     color_filter_t *colorf = (color_filter_t *)filter_arg;
 340     gchar *err_msg;
 341
 342     g_assert(colorf->c_colorfilter == NULL);
 343     if (!dfilter_compile(colorf->filter_text, &colorf->c_colorfilter, &err_msg)) {
 344         simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK,
 345                       "Could not compile color filter name: \"%s\" text: \"%s\".\n%s",
 346                       colorf->filter_name, colorf->filter_text, err_msg);
 347         g_free(err_msg);
 348         /* this filter was compilable before, so this should never happen */
 349         /* except if the OK button of the parent window has been clicked */
 350         /* so don't use g_assert_not_reached() but check the filters again */
 351     }
 352 }
 353
 354 static void
 355 color_filter_validate_cb(gpointer filter_arg, gpointer unused _U_)
 356 {
 357     color_filter_t *colorf = (color_filter_t *)filter_arg;
 358     gchar *err_msg;
 359
 360     g_assert(colorf->c_colorfilter == NULL);
 361     if (!dfilter_compile(colorf->filter_text, &colorf->c_colorfilter, &err_msg)) {
 362         simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK,
 363                       "Removing color filter name: \"%s\" text: \"%s\".\n%s",
 364                       colorf->filter_name, colorf->filter_text, err_msg);
 365         g_free(err_msg);
 366         /* Delete the color filter from the list of color filters. */
 367         color_filter_valid_list = g_slist_remove(color_filter_valid_list, colorf);
 368         color_filter_delete(colorf);
 369     }
 370 }
 371
 372 /* apply changes from the edit list */
 373 void
 374 color_filters_apply(GSList *tmp_cfl, GSList *edit_cfl)
 375 {
 376     /* "move" old entries to the deleted list
 377      * we must keep them until the dissection no longer needs them */
 378     color_filter_deleted_list = g_slist_concat(color_filter_deleted_list, color_filter_list);
 379     color_filter_list = NULL;
 380
 381     /* clone all list entries from tmp/edit to normal list */
 382     color_filter_valid_list = NULL;
 383     color_filter_valid_list = color_filter_list_clone(tmp_cfl);
 384     color_filter_valid_list = g_slist_concat(color_filter_valid_list,
 385                                              color_filter_list_clone(edit_cfl) );
 386
 387     /* compile all filter */
 388     g_slist_foreach(color_filter_valid_list, color_filter_validate_cb, NULL);
 389
 390     /* clone all list entries from tmp/edit to normal list */
 391     color_filter_list = color_filter_list_clone(color_filter_valid_list);
 392
 393     /* compile all filter */
 394     g_slist_foreach(color_filter_list, color_filter_compile_cb, NULL);
 395 }
 396
 397 gboolean
 398 color_filters_used(void)
 399 {
 400     return color_filter_list != NULL && filters_enabled;
 401 }
 402
 403 gboolean
 404 tmp_color_filters_used(void)
 405 {
 406     return tmp_colors_set;
 407 }
 408
 409 void
 410 color_filters_enable(gboolean enable)
 411 {
 412     packet_list_enable_color(enable);
 413 }
 414
 415
 416 /* prepare the epan_dissect_t for the filter */
 417 static void
 418 prime_edt(gpointer data, gpointer user_data)
 419 {
 420     color_filter_t *colorf = (color_filter_t *)data;
 421     epan_dissect_t *edt    = (epan_dissect_t *)user_data;
 422
 423     if (colorf->c_colorfilter != NULL)
 424         epan_dissect_prime_dfilter(edt, colorf->c_colorfilter);
 425 }
 426
 427 /* Prime the epan_dissect_t with all the compiler
 428  * color filters in 'color_filter_list'. */
 429 void
 430 color_filters_prime_edt(epan_dissect_t *edt)
 431 {
 432     if (color_filters_used())
 433         g_slist_foreach(color_filter_list, prime_edt, edt);
 434 }
 435
 436 /* * Return the color_t for later use */
 437 const color_filter_t *
 438 color_filters_colorize_packet(epan_dissect_t *edt)
 439 {
 440     GSList         *curr;
 441     color_filter_t *colorf;
 442
 443     /* If we have color filters, "search" for the matching one. */
 444     if (color_filters_used()) {
 445         curr = color_filter_list;
 446
 447         while(curr != NULL) {
 448             colorf = (color_filter_t *)curr->data;
 449             if ( (!colorf->disabled) &&
 450                  (colorf->c_colorfilter != NULL) &&
 451                  dfilter_apply_edt(colorf->c_colorfilter, edt)) {
 452                 return colorf;
 453             }
 454             curr = g_slist_next(curr);
 455         }
 456     }
 457
 458     return NULL;
 459 }
 460
 461 /* read filters from the given file */
 462 /* XXX - Would it make more sense to use GStrings here instead of reallocing
 463    our buffers? */
 464 static gboolean
 465 read_filters_file(FILE *f, gpointer user_data)
 466 {
 467 #define INIT_BUF_SIZE 128
 468     gchar    *name             = NULL;
 469     gchar    *filter_exp       = NULL;
 470     guint32   name_len         = INIT_BUF_SIZE;
 471     guint32   filter_exp_len   = INIT_BUF_SIZE;
 472     guint32   i                = 0;
 473     int       c;
 474     guint16   fg_r, fg_g, fg_b, bg_r, bg_g, bg_b;
 475     gboolean  disabled         = FALSE;
 476     gboolean  skip_end_of_line = FALSE;
 477
 478     name = (gchar *)g_malloc(name_len + 1);
 479     filter_exp = (gchar *)g_malloc(filter_exp_len + 1);
 480
 481     while (1) {
 482
 483         if (skip_end_of_line) {
 484             do {
 485                 c = getc(f);
 486             } while (c != EOF && c != '\n');
 487             if (c == EOF)
 488                 break;
 489             disabled = FALSE;
 490             skip_end_of_line = FALSE;
 491         }
 492
 493         while ((c = getc(f)) != EOF && g_ascii_isspace(c)) {
 494             if (c == '\n') {
 495                 continue;
 496             }
 497         }
 498
 499         if (c == EOF)
 500             break;
 501
 502         if (c == '!') {
 503             disabled = TRUE;
 504             continue;
 505         }
 506
 507         /* skip # comments and invalid lines */
 508         if (c != '@') {
 509             skip_end_of_line = TRUE;
 510             continue;
 511         }
 512
 513         /* we get the @ delimiter.
 514          * Format is:
 515          * @name@filter expression@[background r,g,b][foreground r,g,b]
 516          */
 517
 518         /* retrieve name */
 519         i = 0;
 520         while (1) {
 521             c = getc(f);
 522             if (c == EOF || c == '@')
 523                 break;
 524             if (i >= name_len) {
 525                 /* buffer isn't long enough; double its length.*/
 526                 name_len *= 2;
 527                 name = (gchar *)g_realloc(name, name_len + 1);
 528             }
 529             name[i++] = c;
 530         }
 531         name[i] = '\0';
 532
 533         if (c == EOF) {
 534             break;
 535         } else if (i == 0) {
 536             skip_end_of_line = TRUE;
 537             continue;
 538         }
 539
 540         /* retrieve filter expression */
 541         i = 0;
 542         while (1) {
 543             c = getc(f);
 544             if (c == EOF || c == '@')
 545                 break;
 546             if (i >= filter_exp_len) {
 547                 /* buffer isn't long enough; double its length.*/
 548                 filter_exp_len *= 2;
 549                 filter_exp = (gchar *)g_realloc(filter_exp, filter_exp_len + 1);
 550             }
 551             filter_exp[i++] = c;
 552         }
 553         filter_exp[i] = '\0';
 554
 555         if (c == EOF) {
 556             break;
 557         } else if (i == 0) {
 558             skip_end_of_line = TRUE;
 559             continue;
 560         }
 561
 562         /* retrieve background and foreground colors */
 563         if (fscanf(f,"[%hu,%hu,%hu][%hu,%hu,%hu]",
 564                    &bg_r, &bg_g, &bg_b, &fg_r, &fg_g, &fg_b) == 6) {
 565
 566             /* we got a complete color filter */
 567
 568             color_t bg_color, fg_color;
 569             color_filter_t *colorf;
 570             dfilter_t *temp_dfilter;
 571             gchar *err_msg;
 572
 573             if (!dfilter_compile(filter_exp, &temp_dfilter, &err_msg)) {
 574                 g_warning("Could not compile \"%s\" in colorfilters file.\n%s",
 575                           name, err_msg);
 576                 g_free(err_msg);
 577                 prefs.unknown_colorfilters = TRUE;
 578
 579                 skip_end_of_line = TRUE;
 580                 continue;
 581             }
 582
 583             if (!initialize_color(&fg_color, fg_r, fg_g, fg_b)) {
 584                 /* oops */
 585                 simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK,
 586                               "Could not allocate foreground color "
 587                               "specified in input file for %s.", name);
 588                 dfilter_free(temp_dfilter);
 589                 skip_end_of_line = TRUE;
 590                 continue;
 591             }
 592             if (!initialize_color(&bg_color, bg_r, bg_g, bg_b)) {
 593                 /* oops */
 594                 simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK,
 595                               "Could not allocate background color "
 596                               "specified in input file for %s.", name);
 597                 dfilter_free(temp_dfilter);
 598                 skip_end_of_line = TRUE;
 599                 continue;
 600             }
 601
 602             colorf = color_filter_new(name, filter_exp, &bg_color,
 603                                       &fg_color, disabled);
 604             if(user_data == &color_filter_list) {
 605                 GSList **cfl = (GSList **)user_data;
 606
 607                 /* internal call */
 608                 colorf->c_colorfilter = temp_dfilter;
 609                 *cfl = g_slist_append(*cfl, colorf);
 610             } else {
 611                 /* external call */
 612                 /* just editing, don't need the compiled filter */
 613                 dfilter_free(temp_dfilter);
 614                 color_filter_add_cb (colorf, user_data);
 615             }
 616         }    /* if sscanf */
 617
 618         skip_end_of_line = TRUE;
 619     }
 620
 621     g_free(name);
 622     g_free(filter_exp);
 623     return TRUE;
 624 }
 625
 626 /* read filters from the user's filter file */
 627 static gboolean
 628 read_users_filters(GSList **cfl)
 629 {
 630     gchar    *path;
 631     FILE     *f;
 632     gboolean  ret;
 633
 634     /* decide what file to open (from dfilter code) */
 635     path = get_persconffile_path("colorfilters", TRUE);
 636     if ((f = ws_fopen(path, "r")) == NULL) {
 637         if (errno != ENOENT) {
 638             simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK,
 639                           "Could not open filter file\n\"%s\": %s.", path,
 640                           g_strerror(errno));
 641         }
 642         g_free(path);
 643         return FALSE;
 644     }
 645     g_free(path);
 646     path = NULL;
 647
 648     ret = read_filters_file(f, cfl);
 649     fclose(f);
 650     return ret;
 651 }
 652
 653 /* read filters from the filter file */
 654 gboolean
 655 color_filters_read_globals(gpointer user_data)
 656 {
 657     gchar    *path;
 658     FILE     *f;
 659     gboolean  ret;
 660
 661     /* decide what file to open (from dfilter code) */
 662     path = get_datafile_path("colorfilters");
 663     if ((f = ws_fopen(path, "r")) == NULL) {
 664         if (errno != ENOENT) {
 665             simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK,
 666                           "Could not open global filter file\n\"%s\": %s.", path,
 667                           g_strerror(errno));
 668         }
 669         g_free(path);
 670         return FALSE;
 671     }
 672     g_free(path);
 673     path = NULL;
 674
 675     ret = read_filters_file(f, user_data);
 676     fclose(f);
 677     return ret;
 678 }
 679
 680 /* read filters from some other filter file (import) */
 681 gboolean
 682 color_filters_import(const gchar *path, const gpointer user_data)
 683 {
 684     FILE     *f;
 685     gboolean  ret;
 686
 687     if ((f = ws_fopen(path, "r")) == NULL) {
 688         simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK,
 689                       "Could not open\n%s\nfor reading: %s.",
 690                       path, g_strerror(errno));
 691         return FALSE;
 692     }
 693
 694     ret = read_filters_file(f, user_data);
 695     fclose(f);
 696     return ret;
 697 }
 698
 699 struct write_filter_data
 700 {
 701     FILE     *f;
 702     gboolean  only_selected;
 703 };
 704
 705 /* save a single filter */
 706 static void
 707 write_filter(gpointer filter_arg, gpointer data_arg)
 708 {
 709     struct write_filter_data *data = (struct write_filter_data *)data_arg;
 710     color_filter_t *colorf = (color_filter_t *)filter_arg;
 711     FILE *f = data->f;
 712
 713     if ( (colorf->selected || !data->only_selected) &&
 714          (strstr(colorf->filter_name,CONVERSATION_COLOR_PREFIX)==NULL) ) {
 715         fprintf(f,"%s@%s@%s@[%u,%u,%u][%u,%u,%u]\n",
 716                 colorf->disabled ? "!" : "",
 717                 colorf->filter_name,
 718                 colorf->filter_text,
 719                 colorf->bg_color.red,
 720                 colorf->bg_color.green,
 721                 colorf->bg_color.blue,
 722                 colorf->fg_color.red,
 723                 colorf->fg_color.green,
 724                 colorf->fg_color.blue);
 725     }
 726 }
 727
 728 /* save filters in a filter file */
 729 static gboolean
 730 write_filters_file(const GSList *cfl, FILE *f, gboolean only_selected)
 731 {
 732     struct write_filter_data data;
 733
 734     data.f = f;
 735     data.only_selected = only_selected;
 736
 737     fprintf(f,"# DO NOT EDIT THIS FILE!  It was created by Wireshark\n");
 738     g_slist_foreach((GSList *) cfl, write_filter, &data);
 739     return TRUE;
 740 }
 741
 742 /* save filters in users filter file */
 743 gboolean
 744 color_filters_write(GSList *cfl)
 745 {
 746     gchar *pf_dir_path;
 747     gchar *path;
 748     FILE  *f;
 749
 750     /* Create the directory that holds personal configuration files,
 751        if necessary.  */
 752     if (create_persconffile_dir(&pf_dir_path) == -1) {
 753         simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK,
 754                       "Can't create directory\n\"%s\"\nfor color files: %s.",
 755                       pf_dir_path, g_strerror(errno));
 756         g_free(pf_dir_path);
 757         return FALSE;
 758     }
 759
 760     path = get_persconffile_path("colorfilters", TRUE);
 761     if ((f = ws_fopen(path, "w+")) == NULL) {
 762         simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK,
 763                       "Could not open\n%s\nfor writing: %s.",
 764                       path, g_strerror(errno));
 765         g_free(path);
 766         return FALSE;
 767     }
 768     g_free(path);
 769     write_filters_file(cfl, f, FALSE);
 770     fclose(f);
 771     return TRUE;
 772 }
 773
 774 /* save filters in some other filter file (export) */
 775 gboolean
 776 color_filters_export(const gchar *path, const GSList *cfl, gboolean only_marked)
 777 {
 778     FILE *f;
 779
 780     if ((f = ws_fopen(path, "w+")) == NULL) {
 781         simple_dialog(ESD_TYPE_ERROR, ESD_BTN_OK,
 782                       "Could not open\n%s\nfor writing: %s.",
 783                       path, g_strerror(errno));
 784         return FALSE;
 785     }
 786     write_filters_file(cfl, f, only_marked);
 787     fclose(f);
 788     return TRUE;
 789 }
 790
 791 /*
 792  * Editor modelines  -  http://www.wireshark.org/tools/modelines.html
 793  *
 794  * Local variables:
 795  * c-basic-offset: 4
 796  * tab-width: 8
 797  * indent-tabs-mode: nil
 798  * End:
 799  *
 800  * vi: set shiftwidth=4 tabstop=8 expandtab:
 801  * :indentSize=4:tabSize=8:noTabs=true:
 802  */