| c732d49e |
* Contact for licensing options: <licensing-mcpttclient(at)mcopenplatform(dot)com>
*
* The original file was part of Open Source Doubango Framework
* Copyright (C) 2010-2011 Mamadou Diop.
* Copyright (C) 2012 Doubango Telecom <http://doubango.org>
*
* This file is part of Open Source Doubango Framework.
*
* DOUBANGO is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* DOUBANGO is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with DOUBANGO.
*
*/
/**@file tsms_address.c
* @brief SMS address encoder/decoder.
*
* @author Mamadou Diop <diopmamadou(at)doubango.org>
*
*/
#include "tinysms/tsms_address.h"
#include "tsk_string.h"
#include "tsk_memory.h"
#include "tsk_debug.h"
#include <string.h>
/** swaps the address from 'abcd' to 'badc'
*/
char* tsms_address_swap(const char* in, tsk_size_t in_len)
{
tsk_size_t i;
char* ret = tsk_null;
if(tsk_strnullORempty(in)){
goto bail;
}
#if HAVE_CRT //Debug memory
ret = calloc(in_len + 2/*\0 and trainling F*/, sizeof(uint8_t));
#else
ret = tsk_calloc(in_len + 2/*\0 and trainling F*/, sizeof(uint8_t));
#endif //HAVE_CRT
if(in_len>=2){
for(i=0; i<in_len; i+=2){
ret[i] = in[i+1];
ret[i+1] = in[i];
}
}
if(in_len & 0x01){ /* odd number? */
ret[i-2] = 'F';
ret[i-1] = in[i-2];
}
bail:
return ret;
}
tsms_address_t* tsms_address_create(const tsms_address_string_t digits, tsms_address_type_t type)
{
return tsk_object_new(tsms_address_def_t, digits, type);
}
tsms_address_t* tsms_address_oa_create(const tsms_address_string_t digits)
{
return tsms_address_create(digits, tsms_addr_oa);
}
tsms_address_t* tsms_address_da_create(const tsms_address_string_t digits)
{
return tsms_address_create(digits, tsms_addr_da);
}
tsms_address_t* tsms_address_smsc_create(const tsms_address_string_t digits)
{
return tsms_address_create(digits, tsms_addr_smsc);
}
/** Serialize the address as per 3GPP TS 23.040 v910 section 9.1.2.5. */
int tsms_address_serialize(const tsms_address_t* address, tsk_buffer_t* output)
{
char* number = tsk_null;
tsk_size_t i, num_len/*real len*/;
uint8_t type_of_address;
if(!output){
return -1;
}
/* For more information see 3GPP TS 23.040 v910 section 9.1.2.5
1 - Address-Length
2 - Type-of-Address
+----+----+----+----+----+----+----+----+
| 1 | TON | NPI |
+----+----+----+----+----+----+----+----+
3 - Phone number in semi octets
*/
number = tsms_address_swap(address ? address->digits : tsk_null, address ? strlen(address->digits) : 0);
if(number){
tsk_size_t len = (address->type == tsms_addr_smsc) ?
((strlen(number)/2) + 1) /* Number of octets plus 1. */
: strlen(address->digits); /* Number of BCD digits */
/* 1 - Address-Length */
tsk_buffer_append(output, &len, 1);
}
else{
/* 1 - Address-Length */
static uint8_t _1bytes = 0x00;
tsk_buffer_append(output, &_1bytes, 1);
goto bail; /* neither 2 nor 3 will be executed */
}
/* 2 - Type-of-Address */
type_of_address = (address->npi | (((address->ton << 4) | 0x80)));
tsk_buffer_append(output, &type_of_address, 1);
/* 3 - Phone number in semi octets (BCD digits) */
if(((num_len = strlen(number)))){
unsigned _1bytes; /* do not use neither int8_t nor uint8_t */
/* as number comes from swap ==> num_len not odd */
for(i=0; i<num_len; i+=2){
if(sscanf(&number[i], "%2x", &_1bytes)){ /*do not use tsk_atox(str), because str should end with '\0'.*/
tsk_buffer_append(output, &_1bytes, 1);
}
}
}
bail:
TSK_FREE(number);
return 0;
}
tsms_address_t* tsms_address_deserialize(const void* data, tsk_size_t size, tsms_address_type_t xtype, tsk_size_t *length)
{
tsms_address_t* address = tsk_null;
uint8_t addr_len, _1byte, i;
const uint8_t* pdata = data;
*length = 0;
if(!pdata || size<=2){
TSK_DEBUG_ERROR("Invalid Parameter.");
goto bail;
}
/* 1 - Address-Length */
addr_len = *pdata;
pdata++;
/*== len=0 ==*/
if(!addr_len){
address = tsms_address_create(tsk_null, xtype);
*length = 1;
goto bail;
}
/*== check validity for non-zero-length address ==*/
addr_len = (xtype == tsms_addr_smsc) ?
(addr_len - 1) /* Number of octets plus 1. */
: ((addr_len/2) + (addr_len%2)); /* Number of BCD digits */
if((tsk_size_t)(1 /*Address-Length*/ + 1 /*Type-of-Address*/ + addr_len /* digits */) >= size){
TSK_DEBUG_ERROR("Too short to contain an address.");
goto bail;
}
else{
address = tsms_address_create(tsk_null, xtype);
*length = 1 /*Address-Length*/ + 1 /*Type-of-Address*/ + addr_len /* digits */;
}
/* 2 - Type-of-Address
+----+----+----+----+----+----+----+----+
| 1 | TON | NPI |
+----+----+----+----+----+----+----+----+
*/
address->ton = ((*pdata &0x70) >> 4);
address->npi = (*pdata &0x0F);
pdata++;
/* 3 - Phone number in semi octets (BCD digits) */
#if HAVE_CRT //Debug memory
//address->digits = calloc((addr_len/2) + 1, sizeof(uint8_t));
#else
//address->digits = tsk_calloc((addr_len/2) + 1, sizeof(uint8_t));
#endif //HAVE_CRT
for(i=0; i<addr_len; i++, pdata++){
_1byte = ((*pdata << 4) | (*pdata >> 4));
if((_1byte & 0x0F) == 0x0F){ /* ends with 'F'? */
_1byte = ((_1byte & 0xF0) >> 4);
tsk_strcat_2(&address->digits, "%.1x", _1byte);
}
else{
tsk_strcat_2(&address->digits, "%.2x", _1byte);
}
}
bail:
return address;
}
//=================================================================================================
// SMS Address object definition
//
static tsk_object_t* tsms_address_ctor(tsk_object_t * self, va_list * app)
{
tsms_address_t *address = self;
if(address){
const char* digits = va_arg(*app, const char*);
address->type = va_arg(*app, tsms_address_type_t);
if(!tsk_strnullORempty(digits)){
if(*digits == '+'){
address->npi = tsms_addr_npi_isdn;
address->ton = tsms_addr_ton_international;
address->digits = tsk_strdup((digits+1));
}
else{
address->npi = tsms_addr_npi_national;
address->ton = tsms_addr_ton_national;
address->digits = tsk_strdup((digits));
}
}
else{
address->npi = tsms_addr_npi_unknown;
address->ton = tsms_addr_ton_unknown;
}
}
return self;
}
static tsk_object_t* tsms_address_dtor(tsk_object_t * self)
{
tsms_address_t *address = self;
if(address){
TSK_FREE(address->digits);
}
return self;
}
static const tsk_object_def_t tsms_address_def_s =
{
sizeof(tsms_address_t),
tsms_address_ctor,
tsms_address_dtor,
tsk_null,
};
const tsk_object_def_t *tsms_address_def_t = &tsms_address_def_s; |