extcap_parser.c

   1 /* extcap_parser.c
   2  *
   3  * Routines for extcap external capture
   4  * Copyright 2013, Mike Ryan <mikeryan@lacklustre.net>
   5  *
   6  * Wireshark - Network traffic analyzer
   7  * By Gerald Combs <gerald@wireshark.org>
   8  * Copyright 1998 Gerald Combs
   9  *
  10  * SPDX-License-Identifier: GPL-2.0-or-later
  11  */
  12
  13 #include <config.h>
  14
  15 #include <stdio.h>
  16 #include <glib.h>
  17 #include <string.h>
  18
  19 #include "ui/iface_toolbar.h"
  20 #include "wsutil/strtoi.h"
  21
  22 #include "extcap.h"
  23 #include "extcap_parser.h"
  24 #include "ws_attributes.h"
  25
  26 void extcap_printf_complex(extcap_complex *comp) {
  27     gchar *ret = extcap_get_complex_as_string(comp);
  28     printf("%s", ret);
  29     g_free(ret);
  30 }
  31
  32 gchar *extcap_get_complex_as_string(extcap_complex *comp) {
  33     return (comp ? g_strdup(comp->_val) : NULL);
  34 }
  35
  36 extcap_complex *extcap_parse_complex(extcap_arg_type complex_type,
  37                                      const gchar *data) {
  38
  39     extcap_complex *rc = g_new0(extcap_complex, 1);
  40
  41     rc->_val = g_strdup(data);
  42     rc->complex_type = complex_type;
  43
  44     return rc;
  45 }
  46
  47 gboolean extcap_compare_is_default(extcap_arg *element, extcap_complex *test) {
  48     if (element == NULL || element->default_complex == NULL || test == NULL)
  49         return FALSE;
  50
  51     if (g_strcmp0(element->default_complex->_val, test->_val) == 0)
  52         return TRUE;
  53
  54     return FALSE;
  55 }
  56
  57 void extcap_free_complex(extcap_complex *comp) {
  58     if (comp)
  59         g_free(comp->_val);
  60     g_free(comp);
  61 }
  62
  63 gint extcap_complex_get_int(extcap_complex *comp) {
  64     if (comp == NULL || comp->_val == NULL || comp->complex_type != EXTCAP_ARG_INTEGER)
  65         return (gint)0;
  66
  67     return (gint) g_ascii_strtoll(comp->_val, NULL, 10);
  68 }
  69
  70 guint extcap_complex_get_uint(extcap_complex *comp) {
  71     if (comp == NULL || comp->_val == NULL || comp->complex_type != EXTCAP_ARG_UNSIGNED)
  72         return (guint)0;
  73     return (guint) g_ascii_strtoull(comp->_val, NULL, 10);
  74 }
  75
  76 gint64 extcap_complex_get_long(extcap_complex *comp) {
  77     if (comp == NULL || comp->_val == NULL || comp->complex_type != EXTCAP_ARG_LONG)
  78         return (gint64)0;
  79     return g_ascii_strtoll(comp->_val, NULL, 10);
  80 }
  81
  82 gdouble extcap_complex_get_double(extcap_complex *comp) {
  83     if (comp == NULL || comp->_val == NULL || comp->complex_type != EXTCAP_ARG_DOUBLE)
  84         return (gdouble)0;
  85     return g_strtod(comp->_val, NULL);
  86 }
  87
  88 gboolean extcap_complex_get_bool(extcap_complex *comp) {
  89     if (comp == NULL || comp->_val == NULL)
  90         return FALSE;
  91
  92     if (comp->complex_type != EXTCAP_ARG_BOOLEAN && comp->complex_type != EXTCAP_ARG_BOOLFLAG)
  93         return FALSE;
  94
  95     return g_regex_match_simple(EXTCAP_BOOLEAN_REGEX, comp->_val, G_REGEX_CASELESS, (GRegexMatchFlags)0);
  96 }
  97
  98 gchar *extcap_complex_get_string(extcap_complex *comp) {
  99     /* Not checking for argument type, to use this method as fallback if only strings are needed */
 100     return comp != NULL ? comp->_val : NULL;
 101 }
 102
 103 static extcap_token_sentence *extcap_tokenize_sentence(const gchar *s) {
 104     GRegex *regex = NULL;
 105     GMatchInfo *match_info = NULL;
 106     GError *error = NULL;
 107     gchar *param_value = NULL;
 108     guint param_type = EXTCAP_PARAM_UNKNOWN;
 109
 110     extcap_token_sentence *rs = g_new0(extcap_token_sentence, 1);
 111
 112     rs->sentence = NULL;
 113
 114     /* Regex for catching just the allowed values for sentences */
 115     if ((regex = g_regex_new("^[\\t| ]*(arg|value|interface|extcap|dlt|control)(?=[\\t| ]+\\{)",
 116                              (GRegexCompileFlags) G_REGEX_CASELESS, (GRegexMatchFlags) 0, NULL)) != NULL) {
 117         g_regex_match(regex, s, (GRegexMatchFlags) 0, &match_info);
 118
 119         if (g_match_info_matches(match_info))
 120             rs->sentence = g_match_info_fetch(match_info, 0);
 121
 122         g_match_info_free(match_info);
 123         g_regex_unref(regex);
 124     }
 125     /* No valid sentence found, exiting here */
 126     if (rs->sentence == NULL) {
 127         g_free(rs);
 128         return NULL;
 129     }
 130
 131     rs->param_list = g_hash_table_new_full(g_direct_hash, g_direct_equal, NULL, g_free);
 132
 133     /* Capture the argument and the value of the list. This will ensure,
 134      * that regex patterns given to {validation=} are parsed correctly,
 135      * as long as }{ does not occur within the pattern */
 136     regex = g_regex_new("\\{([a-zA-Z_-]*?)\\=(.*?)\\}(?=\\{|$|\\s)",
 137                         (GRegexCompileFlags) G_REGEX_CASELESS, (GRegexMatchFlags) 0, NULL);
 138     if (regex != NULL) {
 139         g_regex_match_full(regex, s, -1, 0, (GRegexMatchFlags) 0, &match_info, &error);
 140         while (g_match_info_matches(match_info)) {
 141             gchar *arg = g_match_info_fetch(match_info, 1);
 142
 143             if (arg == NULL)
 144                 break;
 145
 146             param_value = g_match_info_fetch(match_info, 2);
 147
 148             if (g_ascii_strcasecmp(arg, "number") == 0) {
 149                 param_type = EXTCAP_PARAM_ARGNUM;
 150             } else if (g_ascii_strcasecmp(arg, "call") == 0) {
 151                 param_type = EXTCAP_PARAM_CALL;
 152             } else if (g_ascii_strcasecmp(arg, "display") == 0) {
 153                 param_type = EXTCAP_PARAM_DISPLAY;
 154             } else if (g_ascii_strcasecmp(arg, "type") == 0) {
 155                 param_type = EXTCAP_PARAM_TYPE;
 156             } else if (g_ascii_strcasecmp(arg, "arg") == 0) {
 157                 param_type = EXTCAP_PARAM_ARG;
 158             } else if (g_ascii_strcasecmp(arg, "default") == 0) {
 159                 param_type = EXTCAP_PARAM_DEFAULT;
 160             } else if (g_ascii_strcasecmp(arg, "value") == 0) {
 161                 param_type = EXTCAP_PARAM_VALUE;
 162             } else if (g_ascii_strcasecmp(arg, "range") == 0) {
 163                 param_type = EXTCAP_PARAM_RANGE;
 164             } else if (g_ascii_strcasecmp(arg, "tooltip") == 0) {
 165                 param_type = EXTCAP_PARAM_TOOLTIP;
 166             } else if (g_ascii_strcasecmp(arg, "placeholder") == 0) {
 167                 param_type = EXTCAP_PARAM_PLACEHOLDER;
 168             } else if (g_ascii_strcasecmp(arg, "mustexist") == 0) {
 169                 param_type = EXTCAP_PARAM_FILE_MUSTEXIST;
 170             } else if (g_ascii_strcasecmp(arg, "fileext") == 0) {
 171                 param_type = EXTCAP_PARAM_FILE_EXTENSION;
 172             } else if (g_ascii_strcasecmp(arg, "name") == 0) {
 173                 param_type = EXTCAP_PARAM_NAME;
 174             } else if (g_ascii_strcasecmp(arg, "enabled") == 0) {
 175                 param_type = EXTCAP_PARAM_ENABLED;
 176             } else if (g_ascii_strcasecmp(arg, "parent") == 0) {
 177                 param_type = EXTCAP_PARAM_PARENT;
 178             } else if (g_ascii_strcasecmp(arg, "required") == 0) {
 179                 param_type = EXTCAP_PARAM_REQUIRED;
 180             } else if (g_ascii_strcasecmp(arg, "save") == 0) {
 181                 param_type = EXTCAP_PARAM_SAVE;
 182             } else if (g_ascii_strcasecmp(arg, "validation") == 0) {
 183                 param_type = EXTCAP_PARAM_VALIDATION;
 184             } else if (g_ascii_strcasecmp(arg, "version") == 0) {
 185                 param_type = EXTCAP_PARAM_VERSION;
 186             } else if (g_ascii_strcasecmp(arg, "help") == 0) {
 187                 param_type = EXTCAP_PARAM_HELP;
 188             } else if (g_ascii_strcasecmp(arg, "control") == 0) {
 189                 param_type = EXTCAP_PARAM_CONTROL;
 190             } else if (g_ascii_strcasecmp(arg, "role") == 0) {
 191                 param_type = EXTCAP_PARAM_ROLE;
 192             } else {
 193                 param_type = EXTCAP_PARAM_UNKNOWN;
 194             }
 195
 196             g_hash_table_insert(rs->param_list, ENUM_KEY(param_type), param_value);
 197
 198             g_match_info_next(match_info, &error);
 199             g_free(arg);
 200         }
 201         g_match_info_free(match_info);
 202         g_regex_unref(regex);
 203     }
 204
 205     return rs;
 206 }
 207
 208 static GList *extcap_tokenize_sentences(const gchar *s) {
 209
 210     GList *sentences = NULL;
 211     extcap_token_sentence *item = NULL;
 212     gchar **list, **list_iter;
 213
 214     list_iter = list = g_strsplit(s, "\n", 0);
 215     while (*list_iter != NULL) {
 216         item = extcap_tokenize_sentence(*list_iter);
 217         if (item)
 218             sentences = g_list_append(sentences, item);
 219         list_iter++;
 220     }
 221
 222     g_strfreev(list);
 223
 224     return sentences;
 225 }
 226
 227 static void extcap_free_value(extcap_value *v) {
 228     if (v == NULL)
 229         return;
 230
 231     g_free(v->call);
 232     g_free(v->display);
 233
 234     g_free(v);
 235 }
 236
 237 static void extcap_free_valuelist(gpointer data, gpointer user_data _U_) {
 238     extcap_free_value((extcap_value *) data);
 239 }
 240
 241 void extcap_free_arg(extcap_arg *a) {
 242
 243     if (a == NULL)
 244         return;
 245
 246     g_free(a->call);
 247     g_free(a->display);
 248     g_free(a->tooltip);
 249     g_free(a->placeholder);
 250     g_free(a->fileextension);
 251     g_free(a->regexp);
 252     g_free(a->device_name);
 253
 254     if (a->range_start != NULL)
 255         extcap_free_complex(a->range_start);
 256
 257     if (a->range_end != NULL)
 258         extcap_free_complex(a->range_end);
 259
 260     if (a->default_complex != NULL)
 261         extcap_free_complex(a->default_complex);
 262
 263     g_list_foreach(a->values, (GFunc) extcap_free_valuelist, NULL);
 264     g_list_free(a->values);
 265     g_free(a);
 266 }
 267
 268 static void extcap_free_toolbar_value(iface_toolbar_value *v) {
 269     if (v == NULL)
 270         return;
 271
 272     g_free(v->value);
 273     g_free(v->display);
 274 }
 275
 276 static void extcap_free_toolbar_control(iface_toolbar_control *c) {
 277     if (c == NULL)
 278         return;
 279
 280     g_free(c->display);
 281     g_free(c->validation);
 282     g_free(c->tooltip);
 283     g_free(c->placeholder);
 284     g_free(c);
 285 }
 286
 287 void extcap_free_arg_list(GList *a) {
 288     g_list_foreach(a, (GFunc)extcap_free_arg, NULL);
 289     g_list_free(a);
 290 }
 291
 292 static gint glist_find_numbered_arg(gconstpointer listelem, gconstpointer needle) {
 293     if (((const extcap_arg *) listelem)->arg_num == *((const int *) needle))
 294         return 0;
 295     return 1;
 296 }
 297
 298 static gint glist_find_numbered_control(gconstpointer listelem, gconstpointer needle) {
 299     if (((const iface_toolbar_control *) listelem)->num == *((const int *) needle))
 300         return 0;
 301     return 1;
 302 }
 303
 304 static void extcap_free_tokenized_sentence(gpointer s, gpointer user_data _U_) {
 305     extcap_token_sentence *t = (extcap_token_sentence *)s;
 306
 307     if (t == NULL)
 308         return;
 309
 310     g_free(t->sentence);
 311     g_hash_table_destroy(t->param_list);
 312     g_free(t);
 313 }
 314
 315 static void extcap_free_tokenized_sentences(GList *sentences) {
 316     if (sentences == NULL)
 317         return;
 318
 319     g_list_foreach(sentences, extcap_free_tokenized_sentence, NULL);
 320     g_list_free(sentences);
 321 }
 322
 323 static extcap_arg *extcap_parse_arg_sentence(GList *args, extcap_token_sentence *s) {
 324     gchar *param_value = NULL;
 325
 326     extcap_arg *target_arg = NULL;
 327     extcap_value *value = NULL;
 328     GList *entry = NULL;
 329     int tint;
 330     extcap_sentence_type sent = EXTCAP_SENTENCE_UNKNOWN;
 331
 332     if (s == NULL)
 333         return target_arg;
 334
 335     if (g_ascii_strcasecmp(s->sentence, "arg") == 0) {
 336         sent = EXTCAP_SENTENCE_ARG;
 337         /* printf("ARG sentence\n"); */
 338     } else if (g_ascii_strcasecmp(s->sentence, "value") == 0) {
 339         sent = EXTCAP_SENTENCE_VALUE;
 340         /* printf("VALUE sentence\n"); */
 341     }
 342
 343     if (sent == EXTCAP_SENTENCE_ARG) {
 344         target_arg = g_new0(extcap_arg, 1);
 345         target_arg->arg_type = EXTCAP_ARG_UNKNOWN;
 346         target_arg->save = TRUE;
 347
 348
 349         if ((param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_ARGNUM))) == NULL) {
 350             extcap_free_arg(target_arg);
 351             return NULL;
 352         }
 353
 354         if (sscanf(param_value, "%d", &(target_arg->arg_num)) != 1) {
 355             extcap_free_arg(target_arg);
 356             return NULL;
 357         }
 358
 359         if ((param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_CALL))) == NULL) {
 360             extcap_free_arg(target_arg);
 361             return NULL;
 362         }
 363         target_arg->call = g_strdup(param_value);
 364
 365         /* No value only parameters allowed */
 366         if (strlen(target_arg->call) == 0) {
 367             extcap_free_arg(target_arg);
 368             return NULL;
 369         }
 370
 371         if ((param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_DISPLAY))) == NULL) {
 372             extcap_free_arg(target_arg);
 373             return NULL;
 374         }
 375         target_arg->display = g_strdup(param_value);
 376
 377         if ((param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_TOOLTIP)))
 378                 != NULL) {
 379             target_arg->tooltip = g_strdup(param_value);
 380         }
 381
 382         if ((param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_PLACEHOLDER)))
 383                 != NULL) {
 384             target_arg->placeholder = g_strdup(param_value);
 385         }
 386
 387         if ((param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_FILE_MUSTEXIST)))
 388                 != NULL) {
 389             target_arg->fileexists = g_regex_match_simple(EXTCAP_BOOLEAN_REGEX, param_value, G_REGEX_CASELESS, (GRegexMatchFlags)0);
 390         }
 391
 392         if ((param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_FILE_EXTENSION)))
 393                 != NULL) {
 394             target_arg->fileextension = g_strdup(param_value);
 395         }
 396
 397         if ((param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_VALIDATION)))
 398                 != NULL) {
 399             target_arg->regexp = g_strdup(param_value);
 400         }
 401
 402         if ((param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_REQUIRED)))
 403                 != NULL) {
 404             target_arg->is_required = g_regex_match_simple(EXTCAP_BOOLEAN_REGEX, param_value, G_REGEX_CASELESS, (GRegexMatchFlags)0);
 405         }
 406
 407         if ((param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_TYPE)))
 408                 == NULL) {
 409             /* printf("no type in ARG sentence\n"); */
 410             extcap_free_arg(target_arg);
 411             return NULL;
 412         }
 413
 414         if (g_ascii_strcasecmp(param_value, "integer") == 0) {
 415             target_arg->arg_type = EXTCAP_ARG_INTEGER;
 416         } else if (g_ascii_strcasecmp(param_value, "unsigned") == 0) {
 417             target_arg->arg_type = EXTCAP_ARG_UNSIGNED;
 418         } else if (g_ascii_strcasecmp(param_value, "long") == 0) {
 419             target_arg->arg_type = EXTCAP_ARG_LONG;
 420         } else if (g_ascii_strcasecmp(param_value, "double") == 0) {
 421             target_arg->arg_type = EXTCAP_ARG_DOUBLE;
 422         } else if (g_ascii_strcasecmp(param_value, "boolean") == 0) {
 423             target_arg->arg_type = EXTCAP_ARG_BOOLEAN;
 424         } else if (g_ascii_strcasecmp(param_value, "boolflag") == 0) {
 425             target_arg->arg_type = EXTCAP_ARG_BOOLFLAG;
 426         } else if (g_ascii_strcasecmp(param_value, "selector") == 0) {
 427             target_arg->arg_type = EXTCAP_ARG_SELECTOR;
 428         } else if (g_ascii_strcasecmp(param_value, "radio") == 0) {
 429             target_arg->arg_type = EXTCAP_ARG_RADIO;
 430         } else if (g_ascii_strcasecmp(param_value, "string") == 0) {
 431             target_arg->arg_type = EXTCAP_ARG_STRING;
 432         } else if (g_ascii_strcasecmp(param_value, "password") == 0) {
 433             target_arg->arg_type = EXTCAP_ARG_PASSWORD;
 434             /* default setting is to not save passwords */
 435             target_arg->save = FALSE;
 436         } else if (g_ascii_strcasecmp(param_value, "fileselect") == 0) {
 437             target_arg->arg_type = EXTCAP_ARG_FILESELECT;
 438         } else if (g_ascii_strcasecmp(param_value, "multicheck") == 0) {
 439             target_arg->arg_type = EXTCAP_ARG_MULTICHECK;
 440         } else if (g_ascii_strcasecmp(param_value, "timestamp") == 0) {
 441             target_arg->arg_type = EXTCAP_ARG_TIMESTAMP;
 442         } else {
 443             printf("invalid type %s in ARG sentence\n", param_value);
 444             extcap_free_arg(target_arg);
 445             return NULL;
 446         }
 447
 448         if ((param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_SAVE)))
 449                 != NULL) {
 450             target_arg->save = g_regex_match_simple(EXTCAP_BOOLEAN_REGEX, param_value, G_REGEX_CASELESS, (GRegexMatchFlags)0);
 451         }
 452
 453         if ((param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_RANGE)))
 454                 != NULL) {
 455             gchar *cp = g_strstr_len(param_value, -1, ",");
 456
 457             if (cp == NULL) {
 458                 printf("invalid range, expected value,value got %s\n",
 459                        param_value);
 460                 extcap_free_arg(target_arg);
 461                 return NULL;
 462             }
 463
 464             if ((target_arg->range_start = extcap_parse_complex(
 465                                                target_arg->arg_type, param_value)) == NULL) {
 466                 printf("invalid range, expected value,value got %s\n",
 467                        param_value);
 468                 extcap_free_arg(target_arg);
 469                 return NULL;
 470             }
 471
 472             if ((target_arg->range_end = extcap_parse_complex(
 473                                              target_arg->arg_type, cp + 1)) == NULL) {
 474                 printf("invalid range, expected value,value got %s\n",
 475                        param_value);
 476                 extcap_free_arg(target_arg);
 477                 return NULL;
 478             }
 479         }
 480
 481         if ((param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_DEFAULT)))
 482                 != NULL) {
 483             if (target_arg->arg_type != EXTCAP_ARG_MULTICHECK && target_arg->arg_type != EXTCAP_ARG_SELECTOR)
 484             {
 485                 if ((target_arg->default_complex = extcap_parse_complex(
 486                                                        target_arg->arg_type, param_value)) == NULL) {
 487                     printf("invalid default, couldn't parse %s\n", param_value);
 488                 }
 489             }
 490         }
 491
 492     } else if (sent == EXTCAP_SENTENCE_VALUE) {
 493         if ((param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_ARG)))
 494                 == NULL) {
 495             printf("no arg in VALUE sentence\n");
 496             return NULL;
 497         }
 498
 499         if (sscanf(param_value, "%d", &tint) != 1) {
 500             printf("invalid arg in VALUE sentence\n");
 501             return NULL;
 502         }
 503
 504         if ((entry = g_list_find_custom(args, &tint, glist_find_numbered_arg))
 505                 == NULL) {
 506             printf("couldn't find arg %d in list for VALUE sentence\n", tint);
 507             return NULL;
 508         }
 509
 510         value = g_new0(extcap_value, 1);
 511         value->arg_num = tint;
 512
 513         if ((param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_VALUE)))
 514                 == NULL) {
 515             /* printf("no value in VALUE sentence\n"); */
 516             extcap_free_value(value);
 517             return NULL;
 518         }
 519         value->call = g_strdup(param_value);
 520
 521         if ((param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_DISPLAY)))
 522                 == NULL) {
 523             /* printf("no display in VALUE sentence\n"); */
 524             extcap_free_value(value);
 525             return NULL;
 526         }
 527         value->display = g_strdup(param_value);
 528
 529         if ((param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_PARENT)))
 530                 != NULL) {
 531             value->parent = g_strdup(param_value);
 532         }
 533
 534         if ((param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_DEFAULT)))
 535                 != NULL) {
 536             /* printf("found default value\n"); */
 537             value->is_default = g_regex_match_simple(EXTCAP_BOOLEAN_REGEX, param_value, G_REGEX_CASELESS, (GRegexMatchFlags)0);
 538         }
 539
 540         if ((param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_ENABLED)))
 541                 != NULL) {
 542             value->enabled = g_regex_match_simple(EXTCAP_BOOLEAN_REGEX, param_value, G_REGEX_CASELESS, (GRegexMatchFlags)0);
 543         }
 544
 545         ((extcap_arg *) entry->data)->values = g_list_append(
 546                 ((extcap_arg *) entry->data)->values, value);
 547
 548         return NULL;
 549     }
 550
 551     return target_arg;
 552 }
 553
 554 GList *extcap_parse_args(gchar *output) {
 555     GList *result = NULL;
 556     GList *walker = NULL;
 557     GList *temp = NULL;
 558
 559     walker = extcap_tokenize_sentences(output);
 560     temp = walker;
 561
 562     while (walker) {
 563         extcap_arg *ra = NULL;
 564         extcap_token_sentence *sentence = (extcap_token_sentence *)walker->data;
 565
 566         if ((ra = extcap_parse_arg_sentence(result, sentence)) != NULL)
 567             result = g_list_append(result, (gpointer) ra);
 568
 569         walker = g_list_next(walker);
 570     }
 571
 572     extcap_free_tokenized_sentences(temp);
 573
 574     return result;
 575 }
 576
 577 static extcap_interface *extcap_parse_interface_sentence(extcap_token_sentence *s) {
 578     extcap_sentence_type sent = EXTCAP_SENTENCE_UNKNOWN;
 579     gchar *param_value = NULL;
 580     extcap_interface *ri = NULL;
 581
 582     if (s == NULL)
 583         return NULL;
 584
 585     if (g_ascii_strcasecmp(s->sentence, "interface") == 0) {
 586         sent = EXTCAP_SENTENCE_INTERFACE;
 587     } else if (g_ascii_strcasecmp(s->sentence, "extcap") == 0) {
 588         sent = EXTCAP_SENTENCE_EXTCAP;
 589     }
 590
 591     if (sent == EXTCAP_SENTENCE_UNKNOWN)
 592         return NULL;
 593
 594     ri = g_new0(extcap_interface, 1);
 595
 596     ri->if_type = sent;
 597
 598     if ((param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_VALUE)))
 599             == NULL && sent == EXTCAP_SENTENCE_INTERFACE) {
 600         printf("No value in INTERFACE sentence\n");
 601         g_free(ri);
 602         return NULL;
 603     }
 604     ri->call = g_strdup(param_value);
 605
 606     if ((param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_DISPLAY)))
 607             == NULL && sent == EXTCAP_SENTENCE_INTERFACE) {
 608         printf("No display in INTERFACE sentence\n");
 609         g_free(ri->call);
 610         g_free(ri);
 611         return NULL;
 612     }
 613     ri->display = g_strdup(param_value);
 614
 615     if ((param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_VERSION)))
 616             != NULL) {
 617         ri->version = g_strdup(param_value);
 618     }
 619
 620     if ((param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_HELP)))
 621             != NULL) {
 622         ri->help = g_strdup(param_value);
 623     }
 624
 625     return ri;
 626 }
 627
 628 static iface_toolbar_control *extcap_parse_control_sentence(GList *control_items, extcap_token_sentence *s)
 629 {
 630     extcap_sentence_type sent = EXTCAP_SENTENCE_UNKNOWN;
 631     gchar *param_value = NULL;
 632     iface_toolbar_control *control = NULL;
 633     iface_toolbar_value *value = NULL;
 634     GList *entry = NULL;
 635     guint32 num = 0;
 636
 637     if (s == NULL)
 638         return NULL;
 639
 640     if (g_ascii_strcasecmp(s->sentence, "control") == 0) {
 641         sent = EXTCAP_SENTENCE_CONTROL;
 642     } else if (g_ascii_strcasecmp(s->sentence, "value") == 0) {
 643         sent = EXTCAP_SENTENCE_VALUE;
 644     }
 645
 646     if (sent == EXTCAP_SENTENCE_UNKNOWN)
 647         return NULL;
 648
 649     if (sent == EXTCAP_SENTENCE_CONTROL) {
 650         control = g_new0(iface_toolbar_control, 1);
 651         control->ctrl_type = INTERFACE_TYPE_UNKNOWN;
 652
 653         param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_ARGNUM));
 654         if (param_value == NULL) {
 655             extcap_free_toolbar_control(control);
 656             return NULL;
 657         }
 658
 659         if (!ws_strtou32(param_value, NULL, &num)) {
 660             extcap_free_toolbar_control(control);
 661             return NULL;
 662         }
 663         control->num = (int)num;
 664
 665         param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_DISPLAY));
 666         if (param_value == NULL) {
 667             extcap_free_toolbar_control(control);
 668             return NULL;
 669         }
 670         control->display = g_strdup(param_value);
 671
 672         if ((param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_VALIDATION)))
 673             != NULL) {
 674             control->validation = g_strdup(param_value);
 675         }
 676
 677         if ((param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_REQUIRED)))
 678             != NULL) {
 679             control->is_required = g_regex_match_simple(EXTCAP_BOOLEAN_REGEX, param_value, G_REGEX_CASELESS, (GRegexMatchFlags)0);
 680         }
 681
 682         param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_TOOLTIP));
 683         control->tooltip = g_strdup(param_value);
 684
 685         param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_PLACEHOLDER));
 686         control->placeholder = g_strdup(param_value);
 687
 688         param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_TYPE));
 689         if (param_value == NULL) {
 690             extcap_free_toolbar_control(control);
 691             return NULL;
 692         }
 693
 694         extcap_arg_type arg_type = EXTCAP_ARG_UNKNOWN;
 695         if (g_ascii_strcasecmp(param_value, "boolean") == 0) {
 696             control->ctrl_type = INTERFACE_TYPE_BOOLEAN;
 697             arg_type = EXTCAP_ARG_BOOLEAN;
 698         } else if (g_ascii_strcasecmp(param_value, "button") == 0) {
 699             control->ctrl_type = INTERFACE_TYPE_BUTTON;
 700         } else if (g_ascii_strcasecmp(param_value, "selector") == 0) {
 701             control->ctrl_type = INTERFACE_TYPE_SELECTOR;
 702         } else if (g_ascii_strcasecmp(param_value, "string") == 0) {
 703             control->ctrl_type = INTERFACE_TYPE_STRING;
 704             arg_type = EXTCAP_ARG_STRING;
 705         } else {
 706             printf("invalid type %s in CONTROL sentence\n", param_value);
 707             extcap_free_toolbar_control(control);
 708             return NULL;
 709         }
 710
 711         param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_ROLE));
 712         if (param_value != NULL) {
 713             if (g_ascii_strcasecmp(param_value, "control") == 0) {
 714                 control->ctrl_role = INTERFACE_ROLE_CONTROL;
 715             } else if (g_ascii_strcasecmp(param_value, "help") == 0) {
 716                 control->ctrl_role = INTERFACE_ROLE_HELP;
 717             } else if (g_ascii_strcasecmp(param_value, "logger") == 0) {
 718                 control->ctrl_role = INTERFACE_ROLE_LOGGER;
 719             } else if (g_ascii_strcasecmp(param_value, "restore") == 0) {
 720                 control->ctrl_role = INTERFACE_ROLE_RESTORE;
 721             } else {
 722                 printf("invalid role %s in CONTROL sentence\n", param_value);
 723                 control->ctrl_role = INTERFACE_ROLE_UNKNOWN;
 724             }
 725         } else {
 726             /* Default role */
 727             control->ctrl_role = INTERFACE_ROLE_CONTROL;
 728         }
 729
 730         param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_DEFAULT));
 731         if (param_value != NULL) {
 732             if (arg_type != EXTCAP_ARG_UNKNOWN) {
 733                 extcap_complex *complex = extcap_parse_complex(arg_type, param_value);
 734                 if (complex != NULL) {
 735                     if (arg_type == EXTCAP_ARG_BOOLEAN) {
 736                         control->default_value.boolean = extcap_complex_get_bool(complex);
 737                     } else if (arg_type == EXTCAP_ARG_STRING) {
 738                         control->default_value.string = g_strdup(complex->_val);
 739                     }
 740                     extcap_free_complex(complex);
 741                 } else {
 742                     printf("invalid default, couldn't parse %s\n", param_value);
 743                 }
 744             }
 745         }
 746
 747     } else if (sent == EXTCAP_SENTENCE_VALUE) {
 748         param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_CONTROL));
 749         if (param_value == NULL) {
 750             printf("no control in VALUE sentence\n");
 751             return NULL;
 752         }
 753
 754         if (!ws_strtou32(param_value, NULL, &num)) {
 755             extcap_free_toolbar_control(control);
 756             return NULL;
 757         }
 758
 759         entry = g_list_find_custom(control_items, &num, glist_find_numbered_control);
 760         if (entry == NULL) {
 761             printf("couldn't find control %u in list for VALUE sentence\n", num);
 762             return NULL;
 763         }
 764
 765         value = g_new0(iface_toolbar_value, 1);
 766         value->num = (int)num;
 767
 768         param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_VALUE));
 769         if (param_value == NULL) {
 770             extcap_free_toolbar_value(value);
 771             return NULL;
 772         }
 773         value->value = g_strdup(param_value);
 774
 775         param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_DISPLAY));
 776         if (param_value == NULL) {
 777             extcap_free_toolbar_value(value);
 778             return NULL;
 779         }
 780         value->display = g_strdup(param_value);
 781
 782         param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_DEFAULT));
 783         if (param_value != NULL) {
 784             value->is_default = g_regex_match_simple(EXTCAP_BOOLEAN_REGEX, param_value, G_REGEX_CASELESS, (GRegexMatchFlags)0);
 785         }
 786
 787         control = (iface_toolbar_control *)entry->data;
 788         control->values = g_list_append(control->values, value);
 789
 790         return NULL;
 791     }
 792
 793     return control;
 794 }
 795
 796 GList *extcap_parse_interfaces(gchar *output, GList **control_items) {
 797
 798     GList *result = NULL;
 799     GList *tokens = NULL;
 800     GList *walker = extcap_tokenize_sentences(output);
 801     tokens = walker;
 802
 803     while (walker) {
 804         extcap_interface *ri = NULL;
 805         iface_toolbar_control *ti = NULL;
 806         extcap_token_sentence *if_sentence = (extcap_token_sentence *) walker->data;
 807
 808         if (if_sentence) {
 809             if ((g_ascii_strcasecmp(if_sentence->sentence, "interface") == 0) ||
 810                 (g_ascii_strcasecmp(if_sentence->sentence, "extcap") == 0))
 811             {
 812                 if ((ri = extcap_parse_interface_sentence(if_sentence))) {
 813                     result = g_list_append(result, ri);
 814                 }
 815             } else if (control_items &&
 816                        ((g_ascii_strcasecmp(if_sentence->sentence, "control") == 0) ||
 817                         (g_ascii_strcasecmp(if_sentence->sentence, "value") == 0)))
 818             {
 819                 if ((ti = extcap_parse_control_sentence(*control_items, if_sentence))) {
 820                     *control_items = g_list_append(*control_items, ti);
 821                 }
 822             }
 823         }
 824
 825         walker = g_list_next(walker);
 826     }
 827
 828     extcap_free_tokenized_sentences(tokens);
 829
 830     return result;
 831 }
 832
 833 /* Parse a tokenized set of sentences and validate, looking for DLT definitions */
 834 static extcap_dlt *extcap_parse_dlt_sentence(extcap_token_sentence *s) {
 835     gchar *param_value = NULL;
 836     extcap_sentence_type sent = EXTCAP_SENTENCE_UNKNOWN;
 837     extcap_dlt *result = NULL;
 838
 839     if (s == NULL)
 840         return result;
 841
 842     if (g_ascii_strcasecmp(s->sentence, "dlt") == 0) {
 843         sent = EXTCAP_SENTENCE_DLT;
 844     }
 845
 846     if (sent == EXTCAP_SENTENCE_UNKNOWN)
 847         return result;
 848
 849     result = g_new0(extcap_dlt, 1);
 850
 851     result->number = -1;
 852     result->name = NULL;
 853     result->display = NULL;
 854
 855     if ((param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_ARGNUM)))
 856             == NULL) {
 857         printf("No number in DLT sentence\n");
 858         g_free(result);
 859         return NULL;
 860     }
 861     if (sscanf(param_value, "%d", &(result->number)) != 1) {
 862         printf("Invalid number in DLT sentence\n");
 863         g_free(result);
 864         return NULL;
 865     }
 866
 867     if ((param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_NAME)))
 868             == NULL) {
 869         printf("No name in DLT sentence\n");
 870         g_free(result);
 871         return NULL;
 872     }
 873     result->name = g_strdup(param_value);
 874
 875     if ((param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_DISPLAY)))
 876             == NULL) {
 877         printf("No display in DLT sentence\n");
 878         g_free(result->name);
 879         g_free(result);
 880         return NULL;
 881     }
 882     result->display = g_strdup(param_value);
 883
 884     return result;
 885 }
 886
 887 GList *extcap_parse_dlts(gchar *output) {
 888
 889     GList *walker = NULL;
 890     GList *temp = NULL;
 891     GList *result = NULL;
 892
 893     walker = extcap_tokenize_sentences(output);
 894
 895     temp = walker;
 896
 897     while (walker) {
 898         extcap_dlt *data = NULL;
 899
 900         if ((data = extcap_parse_dlt_sentence((extcap_token_sentence *)walker->data)) != NULL)
 901             result = g_list_append(result, data);
 902
 903         walker = g_list_next(walker);
 904     }
 905
 906     extcap_free_tokenized_sentences(temp);
 907
 908     return result;
 909 }
 910
 911 /*
 912  * Editor modelines  -  http://www.wireshark.org/tools/modelines.html
 913  *
 914  * Local variables:
 915  * c-basic-offset: 4
 916  * tab-width: 8
 917  * indent-tabs-mode: nil
 918  * End:
 919  *
 920  * vi: set shiftwidth=4 tabstop=8 expandtab:
 921  * :indentSize=4:tabSize=8:noTabs=true:
 922  */