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wireshark/extcap_parser.c

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/* extcap_parser.c
*
* Routines for extcap external capture
* Copyright 2013, Mike Ryan <mikeryan@lacklustre.net>
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include <config.h>
#define WS_LOG_DOMAIN LOG_DOMAIN_EXTCAP
#include <stdio.h>
#include <glib.h>
#include <string.h>
#include "ui/iface_toolbar.h"
#include "wsutil/strtoi.h"
#include "extcap.h"
#include "extcap_parser.h"
#include "ws_attributes.h"
void extcap_printf_complex(extcap_complex *comp) {
gchar *ret = extcap_get_complex_as_string(comp);
printf("%s", ret);
g_free(ret);
}
gchar *extcap_get_complex_as_string(extcap_complex *comp) {
return (comp ? g_strdup(comp->_val) : NULL);
}
extcap_complex *extcap_parse_complex(extcap_arg_type complex_type,
const gchar *data) {
extcap_complex *rc = g_new0(extcap_complex, 1);
rc->_val = g_strdup(data);
rc->complex_type = complex_type;
return rc;
}
gboolean extcap_compare_is_default(extcap_arg *element, extcap_complex *test) {
if (element == NULL || element->default_complex == NULL || test == NULL)
return FALSE;
if (g_strcmp0(element->default_complex->_val, test->_val) == 0)
return TRUE;
return FALSE;
}
void extcap_free_complex(extcap_complex *comp) {
if (comp)
g_free(comp->_val);
g_free(comp);
}
gint extcap_complex_get_int(extcap_complex *comp) {
if (comp == NULL || comp->_val == NULL || comp->complex_type != EXTCAP_ARG_INTEGER)
return (gint)0;
return (gint) g_ascii_strtoll(comp->_val, NULL, 10);
}
guint extcap_complex_get_uint(extcap_complex *comp) {
if (comp == NULL || comp->_val == NULL || comp->complex_type != EXTCAP_ARG_UNSIGNED)
return (guint)0;
return (guint) g_ascii_strtoull(comp->_val, NULL, 10);
}
gint64 extcap_complex_get_long(extcap_complex *comp) {
if (comp == NULL || comp->_val == NULL || comp->complex_type != EXTCAP_ARG_LONG)
return (gint64)0;
return g_ascii_strtoll(comp->_val, NULL, 10);
}
gdouble extcap_complex_get_double(extcap_complex *comp) {
if (comp == NULL || comp->_val == NULL || comp->complex_type != EXTCAP_ARG_DOUBLE)
return (gdouble)0;
return g_strtod(comp->_val, NULL);
}
static gboolean matches_regex(const char *pattern, const char *subject) {
if (!g_utf8_validate(subject, -1, NULL))
return FALSE;
return g_regex_match_simple(pattern, subject, (GRegexCompileFlags) (G_REGEX_CASELESS), (GRegexMatchFlags)0);
}
gboolean extcap_complex_get_bool(extcap_complex *comp) {
if (comp == NULL || comp->_val == NULL)
return FALSE;
if (comp->complex_type != EXTCAP_ARG_BOOLEAN && comp->complex_type != EXTCAP_ARG_BOOLFLAG)
return FALSE;
return matches_regex(EXTCAP_BOOLEAN_REGEX, comp->_val);
}
gchar *extcap_complex_get_string(extcap_complex *comp) {
/* Not checking for argument type, to use this method as fallback if only strings are needed */
return comp != NULL ? comp->_val : NULL;
}
static extcap_token_sentence *extcap_tokenize_sentence(const gchar *s) {
GRegex *regex = NULL;
GMatchInfo *match_info = NULL;
GError *error = NULL;
gchar *param_value = NULL;
guint param_type = EXTCAP_PARAM_UNKNOWN;
if (!g_utf8_validate(s, -1, NULL))
return FALSE;
extcap_token_sentence *rs = g_new0(extcap_token_sentence, 1);
rs->sentence = NULL;
/* Regex for catching just the allowed values for sentences */
if ((regex = g_regex_new("^[\\t| ]*(arg|value|interface|extcap|dlt|control)(?=[\\t| ]+\\{)",
(GRegexCompileFlags) (G_REGEX_CASELESS),
(GRegexMatchFlags) 0, NULL)) != NULL) {
g_regex_match(regex, s, (GRegexMatchFlags) 0, &match_info);
if (g_match_info_matches(match_info))
rs->sentence = g_match_info_fetch(match_info, 0);
g_match_info_free(match_info);
g_regex_unref(regex);
}
/* No valid sentence found, exiting here */
if (rs->sentence == NULL) {
g_free(rs);
return NULL;
}
rs->param_list = g_hash_table_new_full(g_direct_hash, g_direct_equal, NULL, g_free);
/* Capture the argument and the value of the list. This will ensure,
* that regex patterns given to {validation=} are parsed correctly,
* as long as }{ does not occur within the pattern */
regex = g_regex_new("\\{([a-zA-Z_-]*?)\\=(.*?)\\}(?=\\{|$|\\s)",
(GRegexCompileFlags) (G_REGEX_CASELESS),
(GRegexMatchFlags) 0, NULL);
if (regex != NULL) {
g_regex_match_full(regex, s, -1, 0, (GRegexMatchFlags) 0, &match_info, &error);
while (g_match_info_matches(match_info)) {
gchar *arg = g_match_info_fetch(match_info, 1);
if (arg == NULL)
break;
param_value = g_match_info_fetch(match_info, 2);
if (g_ascii_strcasecmp(arg, "number") == 0) {
param_type = EXTCAP_PARAM_ARGNUM;
} else if (g_ascii_strcasecmp(arg, "call") == 0) {
param_type = EXTCAP_PARAM_CALL;
} else if (g_ascii_strcasecmp(arg, "display") == 0) {
param_type = EXTCAP_PARAM_DISPLAY;
} else if (g_ascii_strcasecmp(arg, "type") == 0) {
param_type = EXTCAP_PARAM_TYPE;
} else if (g_ascii_strcasecmp(arg, "arg") == 0) {
param_type = EXTCAP_PARAM_ARG;
} else if (g_ascii_strcasecmp(arg, "default") == 0) {
param_type = EXTCAP_PARAM_DEFAULT;
} else if (g_ascii_strcasecmp(arg, "value") == 0) {
param_type = EXTCAP_PARAM_VALUE;
} else if (g_ascii_strcasecmp(arg, "range") == 0) {
param_type = EXTCAP_PARAM_RANGE;
} else if (g_ascii_strcasecmp(arg, "tooltip") == 0) {
param_type = EXTCAP_PARAM_TOOLTIP;
} else if (g_ascii_strcasecmp(arg, "placeholder") == 0) {
param_type = EXTCAP_PARAM_PLACEHOLDER;
} else if (g_ascii_strcasecmp(arg, "mustexist") == 0) {
param_type = EXTCAP_PARAM_FILE_MUSTEXIST;
} else if (g_ascii_strcasecmp(arg, "fileext") == 0) {
param_type = EXTCAP_PARAM_FILE_EXTENSION;
} else if (g_ascii_strcasecmp(arg, "group") == 0) {
param_type = EXTCAP_PARAM_GROUP;
} else if (g_ascii_strcasecmp(arg, "name") == 0) {
param_type = EXTCAP_PARAM_NAME;
} else if (g_ascii_strcasecmp(arg, "enabled") == 0) {
param_type = EXTCAP_PARAM_ENABLED;
} else if (g_ascii_strcasecmp(arg, "parent") == 0) {
param_type = EXTCAP_PARAM_PARENT;
} else if (g_ascii_strcasecmp(arg, "reload") == 0) {
param_type = EXTCAP_PARAM_RELOAD;
} else if (g_ascii_strcasecmp(arg, "required") == 0) {
param_type = EXTCAP_PARAM_REQUIRED;
} else if (g_ascii_strcasecmp(arg, "save") == 0) {
param_type = EXTCAP_PARAM_SAVE;
} else if (g_ascii_strcasecmp(arg, "validation") == 0) {
param_type = EXTCAP_PARAM_VALIDATION;
} else if (g_ascii_strcasecmp(arg, "version") == 0) {
param_type = EXTCAP_PARAM_VERSION;
} else if (g_ascii_strcasecmp(arg, "help") == 0) {
param_type = EXTCAP_PARAM_HELP;
} else if (g_ascii_strcasecmp(arg, "control") == 0) {
param_type = EXTCAP_PARAM_CONTROL;
} else if (g_ascii_strcasecmp(arg, "role") == 0) {
param_type = EXTCAP_PARAM_ROLE;
} else {
param_type = EXTCAP_PARAM_UNKNOWN;
}
g_hash_table_insert(rs->param_list, ENUM_KEY(param_type), param_value);
g_match_info_next(match_info, &error);
g_free(arg);
}
g_match_info_free(match_info);
g_regex_unref(regex);
}
return rs;
}
static GList *extcap_tokenize_sentences(const gchar *s) {
GList *sentences = NULL;
extcap_token_sentence *item = NULL;
gchar **list, **list_iter;
list_iter = list = g_strsplit(s, "\n", 0);
while (*list_iter != NULL) {
item = extcap_tokenize_sentence(*list_iter);
if (item)
sentences = g_list_append(sentences, item);
list_iter++;
}
g_strfreev(list);
return sentences;
}
static void extcap_free_value(extcap_value *v) {
if (v == NULL)
return;
g_free(v->call);
g_free(v->display);
g_free(v->parent);
g_free(v);
}
static void extcap_free_valuelist(gpointer data, gpointer user_data _U_) {
extcap_free_value((extcap_value *) data);
}
void extcap_free_arg(extcap_arg *a) {
if (a == NULL)
return;
g_free(a->call);
g_free(a->display);
g_free(a->tooltip);
g_free(a->placeholder);
g_free(a->fileextension);
g_free(a->regexp);
g_free(a->group);
g_free(a->device_name);
if (a->range_start != NULL)
extcap_free_complex(a->range_start);
if (a->range_end != NULL)
extcap_free_complex(a->range_end);
if (a->default_complex != NULL)
extcap_free_complex(a->default_complex);
g_list_foreach(a->values, (GFunc) extcap_free_valuelist, NULL);
g_list_free(a->values);
g_free(a);
}
static void extcap_free_toolbar_value(iface_toolbar_value *value)
{
if (value == NULL)
{
return;
}
g_free(value->value);
g_free(value->display);
g_free(value);
}
void extcap_free_toolbar_control(iface_toolbar_control *control)
{
if (control == NULL)
{
return;
}
g_free(control->display);
g_free(control->validation);
g_free(control->tooltip);
g_free(control->placeholder);
if (control->ctrl_type == INTERFACE_TYPE_STRING) {
g_free(control->default_value.string);
}
g_list_free_full(control->values, (GDestroyNotify)extcap_free_toolbar_value);
g_free(control);
}
void extcap_free_arg_list(GList *a) {
g_list_free_full(a, (GDestroyNotify)extcap_free_arg);
}
static gint glist_find_numbered_arg(gconstpointer listelem, gconstpointer needle) {
if (((const extcap_arg *) listelem)->arg_num == *((const int *) needle))
return 0;
return 1;
}
static gint glist_find_numbered_control(gconstpointer listelem, gconstpointer needle) {
if (((const iface_toolbar_control *) listelem)->num == *((const int *) needle))
return 0;
return 1;
}
static void extcap_free_tokenized_sentence(gpointer s, gpointer user_data _U_) {
extcap_token_sentence *t = (extcap_token_sentence *)s;
if (t == NULL)
return;
g_free(t->sentence);
g_hash_table_destroy(t->param_list);
g_free(t);
}
static void extcap_free_tokenized_sentences(GList *sentences) {
if (sentences == NULL)
return;
g_list_foreach(sentences, extcap_free_tokenized_sentence, NULL);
g_list_free(sentences);
}
static extcap_value *extcap_parse_value_sentence(extcap_token_sentence *s) {
extcap_value *value = NULL;
gchar *param_value = NULL;
int tint = 0;
if (s == NULL)
return value;
if (g_ascii_strcasecmp(s->sentence, "value") == 0) {
if ((param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_ARG)))
== NULL) {
printf("no arg in VALUE sentence\n");
return NULL;
}
if (sscanf(param_value, "%d", &tint) != 1) {
printf("invalid arg in VALUE sentence\n");
return NULL;
}
value = g_new0(extcap_value, 1);
value->arg_num = tint;
if ((param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_VALUE)))
== NULL) {
/* printf("no value in VALUE sentence\n"); */
extcap_free_value(value);
return NULL;
}
value->call = g_strdup(param_value);
if ((param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_DISPLAY)))
== NULL) {
/* printf("no display in VALUE sentence\n"); */
extcap_free_value(value);
return NULL;
}
value->display = g_strdup(param_value);
if ((param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_PARENT)))
!= NULL) {
value->parent = g_strdup(param_value);
}
if ((param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_DEFAULT)))
!= NULL) {
/* printf("found default value\n"); */
value->is_default = matches_regex(EXTCAP_BOOLEAN_REGEX, param_value);
}
if ((param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_ENABLED)))
!= NULL) {
value->enabled = matches_regex(EXTCAP_BOOLEAN_REGEX, param_value);
}
}
return value;
}
static extcap_arg *extcap_parse_arg_sentence(GList *args, extcap_token_sentence *s) {
gchar *param_value = NULL;
extcap_arg *target_arg = NULL;
extcap_value *value = NULL;
GList *entry = NULL;
extcap_sentence_type sent = EXTCAP_SENTENCE_UNKNOWN;
if (s == NULL)
return target_arg;
if (g_ascii_strcasecmp(s->sentence, "arg") == 0) {
sent = EXTCAP_SENTENCE_ARG;
/* printf("ARG sentence\n"); */
} else if (g_ascii_strcasecmp(s->sentence, "value") == 0) {
sent = EXTCAP_SENTENCE_VALUE;
/* printf("VALUE sentence\n"); */
}
if (sent == EXTCAP_SENTENCE_ARG) {
target_arg = g_new0(extcap_arg, 1);
target_arg->arg_type = EXTCAP_ARG_UNKNOWN;
target_arg->save = TRUE;
if ((param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_ARGNUM))) == NULL) {
extcap_free_arg(target_arg);
return NULL;
}
if (sscanf(param_value, "%d", &(target_arg->arg_num)) != 1) {
extcap_free_arg(target_arg);
return NULL;
}
if ((param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_CALL))) == NULL) {
extcap_free_arg(target_arg);
return NULL;
}
target_arg->call = g_strdup(param_value);
/* No value only parameters allowed */
if (strlen(target_arg->call) == 0) {
extcap_free_arg(target_arg);
return NULL;
}
if ((param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_DISPLAY))) == NULL) {
extcap_free_arg(target_arg);
return NULL;
}
target_arg->display = g_strdup(param_value);
if ((param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_TOOLTIP)))
!= NULL) {
target_arg->tooltip = g_strdup(param_value);
}
if ((param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_PLACEHOLDER)))
!= NULL) {
target_arg->placeholder = g_strdup(param_value);
}
if ((param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_FILE_MUSTEXIST)))
!= NULL) {
target_arg->fileexists = matches_regex(EXTCAP_BOOLEAN_REGEX, param_value);
}
if ((param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_FILE_EXTENSION)))
!= NULL) {
target_arg->fileextension = g_strdup(param_value);
}
if ((param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_VALIDATION)))
!= NULL) {
target_arg->regexp = g_strdup(param_value);
}
if ((param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_GROUP)))
!= NULL) {
target_arg->group = g_strdup(param_value);
}
if ((param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_REQUIRED)))
!= NULL) {
target_arg->is_required = matches_regex(EXTCAP_BOOLEAN_REGEX, param_value);
}
if ((param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_TYPE)))
== NULL) {
/* printf("no type in ARG sentence\n"); */
extcap_free_arg(target_arg);
return NULL;
}
if (g_ascii_strcasecmp(param_value, "integer") == 0) {
target_arg->arg_type = EXTCAP_ARG_INTEGER;
} else if (g_ascii_strcasecmp(param_value, "unsigned") == 0) {
target_arg->arg_type = EXTCAP_ARG_UNSIGNED;
} else if (g_ascii_strcasecmp(param_value, "long") == 0) {
target_arg->arg_type = EXTCAP_ARG_LONG;
} else if (g_ascii_strcasecmp(param_value, "double") == 0) {
target_arg->arg_type = EXTCAP_ARG_DOUBLE;
} else if (g_ascii_strcasecmp(param_value, "boolean") == 0) {
target_arg->arg_type = EXTCAP_ARG_BOOLEAN;
} else if (g_ascii_strcasecmp(param_value, "boolflag") == 0) {
target_arg->arg_type = EXTCAP_ARG_BOOLFLAG;
} else if (g_ascii_strcasecmp(param_value, "selector") == 0) {
target_arg->arg_type = EXTCAP_ARG_SELECTOR;
} else if (g_ascii_strcasecmp(param_value, "editselector") == 0) {
target_arg->arg_type = EXTCAP_ARG_EDIT_SELECTOR;
} else if (g_ascii_strcasecmp(param_value, "radio") == 0) {
target_arg->arg_type = EXTCAP_ARG_RADIO;
} else if (g_ascii_strcasecmp(param_value, "string") == 0) {
target_arg->arg_type = EXTCAP_ARG_STRING;
} else if (g_ascii_strcasecmp(param_value, "password") == 0) {
/* Password is never saved because is mapped to PREF_PASSWORD later */
target_arg->arg_type = EXTCAP_ARG_PASSWORD;
} else if (g_ascii_strcasecmp(param_value, "fileselect") == 0) {
target_arg->arg_type = EXTCAP_ARG_FILESELECT;
} else if (g_ascii_strcasecmp(param_value, "multicheck") == 0) {
target_arg->arg_type = EXTCAP_ARG_MULTICHECK;
} else if (g_ascii_strcasecmp(param_value, "timestamp") == 0) {
target_arg->arg_type = EXTCAP_ARG_TIMESTAMP;
} else {
printf("invalid type %s in ARG sentence\n", param_value);
extcap_free_arg(target_arg);
return NULL;
}
if ((param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_SAVE)))
!= NULL) {
target_arg->save = matches_regex(EXTCAP_BOOLEAN_REGEX, param_value);
}
if ((param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_RELOAD)))
!= NULL) {
target_arg->reload = matches_regex(EXTCAP_BOOLEAN_REGEX, param_value);
}
if ((param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_RANGE)))
!= NULL) {
gchar *cp = g_strstr_len(param_value, -1, ",");
if (cp == NULL) {
printf("invalid range, expected value,value got %s\n",
param_value);
extcap_free_arg(target_arg);
return NULL;
}
if ((target_arg->range_start = extcap_parse_complex(
target_arg->arg_type, param_value)) == NULL) {
printf("invalid range, expected value,value got %s\n",
param_value);
extcap_free_arg(target_arg);
return NULL;
}
if ((target_arg->range_end = extcap_parse_complex(
target_arg->arg_type, cp + 1)) == NULL) {
printf("invalid range, expected value,value got %s\n",
param_value);
extcap_free_arg(target_arg);
return NULL;
}
}
if ((param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_DEFAULT)))
!= NULL) {
if (target_arg->arg_type != EXTCAP_ARG_MULTICHECK && target_arg->arg_type != EXTCAP_ARG_SELECTOR)
{
if ((target_arg->default_complex = extcap_parse_complex(
target_arg->arg_type, param_value)) == NULL) {
printf("invalid default, couldn't parse %s\n", param_value);
}
}
}
} else if (sent == EXTCAP_SENTENCE_VALUE) {
value = extcap_parse_value_sentence(s);
if (value == NULL)
return NULL;
if ((entry = g_list_find_custom(args, &value->arg_num, glist_find_numbered_arg))
== NULL) {
printf("couldn't find arg %d in list for VALUE sentence\n", value->arg_num);
return NULL;
}
((extcap_arg *) entry->data)->values = g_list_append(
((extcap_arg *) entry->data)->values, value);
return NULL;
}
return target_arg;
}
GList *extcap_parse_args(gchar *output) {
GList *result = NULL;
GList *walker = NULL;
GList *temp = NULL;
walker = extcap_tokenize_sentences(output);
temp = walker;
while (walker) {
extcap_arg *ra = NULL;
extcap_token_sentence *sentence = (extcap_token_sentence *)walker->data;
if ((ra = extcap_parse_arg_sentence(result, sentence)) != NULL)
result = g_list_append(result, (gpointer) ra);
walker = g_list_next(walker);
}
extcap_free_tokenized_sentences(temp);
return result;
}
GList *extcap_parse_values(gchar *output) {
GList *result = NULL;
GList *walker = NULL;
GList *temp = NULL;
walker = extcap_tokenize_sentences(output);
temp = walker;
while (walker) {
extcap_value *ra = NULL;
extcap_token_sentence *sentence = (extcap_token_sentence *)walker->data;
if ((ra = extcap_parse_value_sentence(sentence)) != NULL)
result = g_list_append(result, (gpointer) ra);
walker = g_list_next(walker);
}
extcap_free_tokenized_sentences(temp);
return result;
}
static extcap_interface *extcap_parse_interface_sentence(extcap_token_sentence *s) {
extcap_sentence_type sent = EXTCAP_SENTENCE_UNKNOWN;
gchar *param_value = NULL;
extcap_interface *ri = NULL;
if (s == NULL)
return NULL;
if (g_ascii_strcasecmp(s->sentence, "interface") == 0) {
sent = EXTCAP_SENTENCE_INTERFACE;
} else if (g_ascii_strcasecmp(s->sentence, "extcap") == 0) {
sent = EXTCAP_SENTENCE_EXTCAP;
}
if (sent == EXTCAP_SENTENCE_UNKNOWN)
return NULL;
ri = g_new0(extcap_interface, 1);
ri->if_type = sent;
if ((param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_VALUE)))
== NULL && sent == EXTCAP_SENTENCE_INTERFACE) {
printf("No value in INTERFACE sentence\n");
g_free(ri);
return NULL;
}
ri->call = g_strdup(param_value);
if ((param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_DISPLAY)))
== NULL && sent == EXTCAP_SENTENCE_INTERFACE) {
printf("No display in INTERFACE sentence\n");
g_free(ri->call);
g_free(ri);
return NULL;
}
ri->display = g_strdup(param_value);
if ((param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_VERSION)))
!= NULL) {
ri->version = g_strdup(param_value);
}
if ((param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_HELP)))
!= NULL) {
ri->help = g_strdup(param_value);
}
return ri;
}
static iface_toolbar_control *extcap_parse_control_sentence(GList *control_items, extcap_token_sentence *s)
{
extcap_sentence_type sent = EXTCAP_SENTENCE_UNKNOWN;
gchar *param_value = NULL;
iface_toolbar_control *control = NULL;
iface_toolbar_value *value = NULL;
GList *entry = NULL;
guint32 num = 0;
if (s == NULL)
return NULL;
if (g_ascii_strcasecmp(s->sentence, "control") == 0) {
sent = EXTCAP_SENTENCE_CONTROL;
} else if (g_ascii_strcasecmp(s->sentence, "value") == 0) {
sent = EXTCAP_SENTENCE_VALUE;
}
if (sent == EXTCAP_SENTENCE_UNKNOWN)
return NULL;
if (sent == EXTCAP_SENTENCE_CONTROL) {
control = g_new0(iface_toolbar_control, 1);
control->ctrl_type = INTERFACE_TYPE_UNKNOWN;
param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_ARGNUM));
if (param_value == NULL) {
extcap_free_toolbar_control(control);
return NULL;
}
if (!ws_strtou32(param_value, NULL, &num)) {
extcap_free_toolbar_control(control);
return NULL;
}
control->num = (int)num;
param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_DISPLAY));
if (param_value == NULL) {
extcap_free_toolbar_control(control);
return NULL;
}
control->display = g_strdup(param_value);
if ((param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_VALIDATION)))
!= NULL) {
control->validation = g_strdup(param_value);
}
if ((param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_REQUIRED)))
!= NULL) {
control->is_required = matches_regex(EXTCAP_BOOLEAN_REGEX, param_value);
}
param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_TOOLTIP));
control->tooltip = g_strdup(param_value);
param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_PLACEHOLDER));
control->placeholder = g_strdup(param_value);
param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_TYPE));
if (param_value == NULL) {
extcap_free_toolbar_control(control);
return NULL;
}
extcap_arg_type arg_type = EXTCAP_ARG_UNKNOWN;
if (g_ascii_strcasecmp(param_value, "boolean") == 0) {
control->ctrl_type = INTERFACE_TYPE_BOOLEAN;
arg_type = EXTCAP_ARG_BOOLEAN;
} else if (g_ascii_strcasecmp(param_value, "button") == 0) {
control->ctrl_type = INTERFACE_TYPE_BUTTON;
} else if (g_ascii_strcasecmp(param_value, "selector") == 0) {
control->ctrl_type = INTERFACE_TYPE_SELECTOR;
} else if (g_ascii_strcasecmp(param_value, "string") == 0) {
control->ctrl_type = INTERFACE_TYPE_STRING;
arg_type = EXTCAP_ARG_STRING;
} else {
printf("invalid type %s in CONTROL sentence\n", param_value);
extcap_free_toolbar_control(control);
return NULL;
}
param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_ROLE));
if (param_value != NULL) {
if (g_ascii_strcasecmp(param_value, "control") == 0) {
control->ctrl_role = INTERFACE_ROLE_CONTROL;
} else if (g_ascii_strcasecmp(param_value, "help") == 0) {
control->ctrl_role = INTERFACE_ROLE_HELP;
} else if (g_ascii_strcasecmp(param_value, "logger") == 0) {
control->ctrl_role = INTERFACE_ROLE_LOGGER;
} else if (g_ascii_strcasecmp(param_value, "restore") == 0) {
control->ctrl_role = INTERFACE_ROLE_RESTORE;
} else {
printf("invalid role %s in CONTROL sentence\n", param_value);
control->ctrl_role = INTERFACE_ROLE_UNKNOWN;
}
} else {
/* Default role */
control->ctrl_role = INTERFACE_ROLE_CONTROL;
}
param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_DEFAULT));
if (param_value != NULL) {
if (arg_type != EXTCAP_ARG_UNKNOWN) {
extcap_complex *complex = extcap_parse_complex(arg_type, param_value);
if (complex != NULL) {
if (arg_type == EXTCAP_ARG_BOOLEAN) {
control->default_value.boolean = extcap_complex_get_bool(complex);
} else if (arg_type == EXTCAP_ARG_STRING) {
control->default_value.string = g_strdup(complex->_val);
}
extcap_free_complex(complex);
} else {
printf("invalid default, couldn't parse %s\n", param_value);
}
}
}
} else if (sent == EXTCAP_SENTENCE_VALUE) {
param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_CONTROL));
if (param_value == NULL) {
printf("no control in VALUE sentence\n");
return NULL;
}
if (!ws_strtou32(param_value, NULL, &num)) {
extcap_free_toolbar_control(control);
return NULL;
}
entry = g_list_find_custom(control_items, &num, glist_find_numbered_control);
if (entry == NULL) {
printf("couldn't find control %u in list for VALUE sentence\n", num);
return NULL;
}
value = g_new0(iface_toolbar_value, 1);
value->num = (int)num;
param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_VALUE));
if (param_value == NULL) {
extcap_free_toolbar_value(value);
return NULL;
}
value->value = g_strdup(param_value);
param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_DISPLAY));
if (param_value == NULL) {
extcap_free_toolbar_value(value);
return NULL;
}
value->display = g_strdup(param_value);
param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_DEFAULT));
if (param_value != NULL) {
value->is_default = matches_regex(EXTCAP_BOOLEAN_REGEX, param_value);
}
control = (iface_toolbar_control *)entry->data;
control->values = g_list_append(control->values, value);
return NULL;
}
return control;
}
GList *extcap_parse_interfaces(gchar *output, GList **control_items) {
GList *result = NULL;
GList *tokens = NULL;
GList *walker = extcap_tokenize_sentences(output);
tokens = walker;
while (walker) {
extcap_interface *ri = NULL;
iface_toolbar_control *ti = NULL;
extcap_token_sentence *if_sentence = (extcap_token_sentence *) walker->data;
if (if_sentence) {
if ((g_ascii_strcasecmp(if_sentence->sentence, "interface") == 0) ||
(g_ascii_strcasecmp(if_sentence->sentence, "extcap") == 0))
{
if ((ri = extcap_parse_interface_sentence(if_sentence))) {
result = g_list_append(result, ri);
}
} else if (control_items &&
((g_ascii_strcasecmp(if_sentence->sentence, "control") == 0) ||
(g_ascii_strcasecmp(if_sentence->sentence, "value") == 0)))
{
if ((ti = extcap_parse_control_sentence(*control_items, if_sentence))) {
*control_items = g_list_append(*control_items, ti);
}
}
}
walker = g_list_next(walker);
}
extcap_free_tokenized_sentences(tokens);
return result;
}
/* Parse a tokenized set of sentences and validate, looking for DLT definitions */
static extcap_dlt *extcap_parse_dlt_sentence(extcap_token_sentence *s) {
gchar *param_value = NULL;
extcap_sentence_type sent = EXTCAP_SENTENCE_UNKNOWN;
extcap_dlt *result = NULL;
if (s == NULL)
return result;
if (g_ascii_strcasecmp(s->sentence, "dlt") == 0) {
sent = EXTCAP_SENTENCE_DLT;
}
if (sent == EXTCAP_SENTENCE_UNKNOWN)
return result;
result = g_new0(extcap_dlt, 1);
result->number = -1;
result->name = NULL;
result->display = NULL;
if ((param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_ARGNUM)))
== NULL) {
printf("No number in DLT sentence\n");
g_free(result);
return NULL;
}
if (sscanf(param_value, "%d", &(result->number)) != 1) {
printf("Invalid number in DLT sentence\n");
g_free(result);
return NULL;
}
if ((param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_NAME)))
== NULL) {
printf("No name in DLT sentence\n");
g_free(result);
return NULL;
}
result->name = g_strdup(param_value);
if ((param_value = (gchar *)g_hash_table_lookup(s->param_list, ENUM_KEY(EXTCAP_PARAM_DISPLAY)))
== NULL) {
printf("No display in DLT sentence\n");
g_free(result->name);
g_free(result);
return NULL;
}
result->display = g_strdup(param_value);
return result;
}
GList *extcap_parse_dlts(gchar *output) {
GList *walker = NULL;
GList *temp = NULL;
GList *result = NULL;
walker = extcap_tokenize_sentences(output);
temp = walker;
while (walker) {
extcap_dlt *data = NULL;
if ((data = extcap_parse_dlt_sentence((extcap_token_sentence *)walker->data)) != NULL)
result = g_list_append(result, data);
walker = g_list_next(walker);
}
extcap_free_tokenized_sentences(temp);
return result;
}
/*
* Editor modelines - https://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:
*/
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