386 lines
9.6 KiB
C
386 lines
9.6 KiB
C
/*
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* Copyright (C) 2010-2011 Mamadou Diop.
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*
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* Contact: Mamadou Diop <diopmamadou(at)doubango[dot]org>
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*
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* This file is part of Open Source Doubango Framework.
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*
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* DOUBANGO is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* DOUBANGO is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with DOUBANGO.
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*
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*/
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/**@file tsk_params.c
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* @brief SIP/MSRP/XCAP Parameters parser.
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*
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* @author Mamadou Diop <diopmamadou(at)doubango[dot]org>
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*
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*/
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#include "tsk_params.h"
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#include "tsk_memory.h"
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#include "tsk_string.h"
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#include "tsk_common.h"
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#include "tsk_debug.h"
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#include <string.h>
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/**@defgroup tsk_params_group SIP/MSRP/XCAP Parameters parser.
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*/
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/* Predicate function used to find a parameter by name (case-insensitive).
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*/
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static int pred_find_param_by_name(const tsk_list_item_t *item, const void *name)
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{
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if(item && item->data){
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tsk_param_t *param = (tsk_param_t*)item->data;
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return tsk_stricmp(param->name, (const char*)name);
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}
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return -1;
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}
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/**@ingroup tsk_params_group
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*/
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tsk_param_t* tsk_param_create(const char* name, const char* value)
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{
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return (tsk_param_t*)tsk_object_new(TSK_PARAM_VA_ARGS(name, value));
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}
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/**@ingroup tsk_params_group
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*/
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tsk_param_t* tsk_param_create_null()
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{
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return tsk_param_create(tsk_null, tsk_null);
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}
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/**@ingroup tsk_params_group
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* Converts a key-value-pair string (kvp) to @ref tsk_param_t object.
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* @param line The kvp (e.g. 'branch=z9hG4bK652hsge') string to parse.
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* @param size The size (length) of the kvp string.
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* @retval @ref tsk_param_t object.
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*/
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tsk_param_t *tsk_params_parse_param(const char* line, tsk_size_t size)
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{
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if(line && size){
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const char* start = line;
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const char* end = (line + size);
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const char* equal = strstr(line, "=");
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tsk_param_t *param = tsk_param_create_null();
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if (param && equal && equal<end) {
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if ((param->name = (char*)tsk_calloc((tsk_size_t)((equal - start) + 1), sizeof(const char)))) {
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memcpy(param->name, start, (equal - start));
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}
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if ((param->value = (char*)tsk_calloc((tsk_size_t)((end - equal - 1) + 1), sizeof(const char)))) {
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memcpy(param->value, equal + 1, (end - equal - 1));
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}
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}
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else if (param) {
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if ((param->name = (char*)tsk_calloc((tsk_size_t)((end - start) + 1), sizeof(const char)))) {
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memcpy(param->name, start, (end - start));
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}
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}
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return param;
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}
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return tsk_null;
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}
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/**@ingroup tsk_params_group
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* Checks if the supplied list of parameters contains a parameter named @a name (case-insensitive).
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* @param self The list of parameters into which to search.
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* @param name The name of the parameter to search.
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* @retval @ref tsk_true if the parameter exist and @ref tsk_false otherwise.
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*/
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tsk_bool_t tsk_params_have_param(const tsk_params_L_t *self, const char* name)
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{
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if(self){
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if(tsk_list_find_item_by_pred(self, pred_find_param_by_name, name)){
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return tsk_true;
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}
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}
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else{
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TSK_DEBUG_ERROR("Invalid parameter");
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}
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return tsk_false;
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}
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/**@ingroup tsk_params_group
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* Adds a parameter to the list of parameters. If the parameter already exist(case-insensitive), then it's value will be updated.
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* @param self The destination list.
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* @param name The name of the parameter to add.
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* @param value The value of the parameter to add.
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* @retval Zero if succeed and -1 otherwise.
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*/
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int tsk_params_add_param(tsk_params_L_t **self, const char* name, const char* value)
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{
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tsk_param_t *param;
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if(!self || !name) {
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TSK_DEBUG_ERROR("Invalid parameter");
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return -1;
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}
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if(!*self){
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*self = tsk_list_create();
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}
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if((param = (tsk_param_t*)tsk_params_get_param_by_name(*self, name))){
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tsk_strupdate(¶m->value, value); /* Already exist ==> update the value. */
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}
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else{
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param = tsk_param_create(name, value);
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tsk_list_push_back_data(*self, (void**)¶m);
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}
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return 0;
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}
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int tsk_params_add_param_2(tsk_params_L_t **self, const tsk_param_t* param)
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{
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if(!self || !param || !param){
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TSK_DEBUG_ERROR("Invalid parameter");
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return -1;
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}
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return tsk_params_add_param(self, param->name, param->value);
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}
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int tsk_params_add_param_3(tsk_params_L_t **self, const char* name, int64_t value)
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{
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tsk_istr_t value_str;
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tsk_itoa(value, &value_str);
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return tsk_params_add_param(self, name, value_str);
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}
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/**@ingroup tsk_params_group
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* Removes a parameter from the list of parameters.
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* @param self The list from which to remove the parameter.
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* @param name The name(case-insensitive) of the parameter to remove.
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* @retval Zero if succeed and -1 otherwise.
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*/
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int tsk_params_remove_param(tsk_params_L_t *self, const char* name)
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{
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if(self){
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tsk_list_remove_item_by_pred(self, pred_find_param_by_name, name);
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return 0;
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}
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else{
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TSK_DEBUG_ERROR("Invalid parameter");
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return -1;
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}
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}
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/**@ingroup tsk_params_group
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* Gets a parameter from the list of parameters by name.
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* @param self The source list.
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* @param name The name(case-insensitive) of the parameter to retrieve.
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* @retval @ref tsk_param_t if succeed and @ref tsk_null otherwise.
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*/
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const tsk_param_t *tsk_params_get_param_by_name(const tsk_params_L_t *self, const char* name)
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{
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if(self){
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const tsk_list_item_t *item_const = tsk_list_find_item_by_pred(self, pred_find_param_by_name, name);
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if(item_const){
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return (const tsk_param_t*)item_const->data;
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}
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}
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else{
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TSK_DEBUG_ERROR("Invalid parameter");
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}
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return tsk_null;
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}
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/**@ingroup tsk_params_group
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* Gets the value of a parameter.
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* @param self The source list.
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* @param name The name(case-insensitive) of the parameter to retrieve.
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* @retval The value of the parameter if succeed and NULL otherwise.
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*/
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const char *tsk_params_get_param_value(const tsk_params_L_t *self, const char* name)
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{
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if(self && name){
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const tsk_list_item_t *item_const = tsk_list_find_item_by_pred(self, pred_find_param_by_name, name);
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if(item_const && item_const->data){
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return ((const tsk_param_t *)item_const->data)->value;
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}
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}
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else{
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TSK_DEBUG_ERROR("Invalid parameter");
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}
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return tsk_null;
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}
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/**@ingroup tsk_params_group
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* Gets the value of a parameter.
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* @param self The source list.
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* @param name The name(case-insensitive) of the parameter to retrieve.
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* @retval The value of the parameter if succeed and -1 otherwise.
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*/
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int tsk_params_get_param_value_as_int(const tsk_params_L_t *self, const char* name)
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{
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const char *value = tsk_params_get_param_value(self, name);
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return value ? atoi(value) : -1;
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}
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/**@ingroup tsk_params_group
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* Serializes a @ref tsk_param_t object.
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* @param param The parameter to serialize.
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* @param output The output buffer.
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* @retval Zero if succeed and -1 otherwise.
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*/
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int tsk_params_param_tostring(const tsk_param_t *param, tsk_buffer_t* output)
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{
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if(param){
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return tsk_buffer_append_2(output, param->value?"%s=%s":"%s", param->name, param->value);
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}
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return -1;
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}
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/**@ingroup tsk_params_group
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* Serializes a @ref tsk_params_L_t object.
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* @param self The list of parameters to serialize.
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* @param separator The character to use as separator between params.
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* @param output The output buffer.
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* @retval Zero if succeed and non-zero error code otherwise.
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*/
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int tsk_params_tostring(const tsk_params_L_t *self, const char separator, tsk_buffer_t* output)
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{
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int ret = -1;
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if(self){
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tsk_list_item_t *item;
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ret = 0; // for empty lists
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tsk_list_foreach(item, self){
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tsk_param_t* param = (tsk_param_t*)item->data;
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//tsk_params_param_tostring(param, output);
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if(TSK_LIST_IS_FIRST(self, item)){
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if((ret = tsk_buffer_append_2(output, param->value?"%s=%s":"%s", param->name, param->value))){
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goto bail;
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}
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}
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else{
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if((ret = tsk_buffer_append_2(output, param->value?"%c%s=%s":"%c%s", separator, param->name, param->value))){
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goto bail;
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}
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}
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}
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}
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bail:
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return ret;
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}
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/**@ingroup tsk_params_group
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*/
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tsk_params_L_t* tsk_params_fromstring(const char* string, const char* separator, tsk_bool_t trim)
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{
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tsk_params_L_t* params = tsk_null;
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tsk_param_t* param;
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int i = 0, index;
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tsk_size_t size = tsk_strlen(string);
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#define PUSH_PARAM() \
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if(!params){ \
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params = tsk_list_create(); \
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} \
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if(trim){ \
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if(param->name){ \
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tsk_strtrim(¶m->name); \
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} \
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if(param->value){ \
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tsk_strtrim(¶m->value); \
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} \
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} \
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tsk_list_push_back_data(params, (void**)¶m);
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while((index = tsk_strindexOf((string + i), (size - i), separator)) != -1){
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if((param = tsk_params_parse_param((string + i), index))){
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PUSH_PARAM();
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}
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i += (index + 1);
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}
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// last one
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if(i<(int)size){
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if((param = tsk_params_parse_param((string + i), (size - i)))){
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PUSH_PARAM();
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}
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}
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return params;
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}
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//=================================================================================================
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// param object definition
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//
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static tsk_object_t* tsk_param_ctor(tsk_object_t* self, va_list * app)
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{
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tsk_param_t *param = (tsk_param_t*)self;
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if(param){
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const char* name = va_arg(*app, const char *);
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const char* value = va_arg(*app, const char *);
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if(!tsk_strnullORempty(name)) {
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param->name = tsk_strdup(name);
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if(!tsk_strnullORempty(value)) {
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param->value = tsk_strdup(value);
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}
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}
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}
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return self;
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}
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static tsk_object_t* tsk_param_dtor(tsk_object_t* self)
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{
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tsk_param_t *param = (tsk_param_t*)self;
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if(param){
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TSK_FREE(param->name);
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TSK_FREE(param->value);
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}
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return self;
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}
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static const tsk_object_def_t tsk_param_def_s =
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{
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sizeof(tsk_param_t),
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tsk_param_ctor,
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tsk_param_dtor,
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tsk_null,
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};
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const tsk_object_def_t *tsk_param_def_t = &tsk_param_def_s;
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