RecordAAR.cpp

00001 /**
00002  ******************************************************************************
00003  * @file    RecordAAR.cpp
00004  * @author  ST / Central Labs
00005  * @version V2.0.0
00006  * @date    28 Apr 2017
00007  * @brief   RecordAAR implementation.
00008  ******************************************************************************
00009  * @attention
00010  *
00011  * <h2><center>&copy; COPYRIGHT(c) 2015 STMicroelectronics</center></h2>
00012  *
00013  * Redistribution and use in source and binary forms, with or without modification,
00014  * are permitted provided that the following conditions are met:
00015  *   1. Redistributions of source code must retain the above copyright notice,
00016  *      this list of conditions and the following disclaimer.
00017  *   2. Redistributions in binary form must reproduce the above copyright notice,
00018  *      this list of conditions and the following disclaimer in the documentation
00019  *      and/or other materials provided with the distribution.
00020  *   3. Neither the name of STMicroelectronics nor the names of its contributors
00021  *      may be used to endorse or promote products derived from this software
00022  *      without specific prior written permission.
00023  *
00024  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
00025  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
00026  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
00027  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
00028  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
00029  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
00030  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
00031  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
00032  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
00033  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00034  *
00035  ******************************************************************************
00036  */
00037 #include <cstring>
00038 #include "RecordAAR.h"
00039 
00040 namespace NDefLib {
00041 
00042 const char RecordAAR::sRecordType[] = { 'a', 'n', 'd', 'r', 'o', 'i', 'd', '.',
00043         'c', 'o', 'm', ':', 'p', 'k', 'g' };
00044 
00045 RecordAAR::RecordAAR(const std::string &packageName) :
00046         mPackageName(packageName) {
00047     mRecordHeader.set_FNT(RecordHeader::NFC_external);
00048     mRecordHeader.set_type_length(sizeof(sRecordType));
00049     mRecordHeader.set_payload_length(mPackageName.size());
00050 
00051 }
00052 
00053 uint16_t RecordAAR::write(uint8_t *buffer) {
00054     uint16_t offset = 0;
00055     offset += mRecordHeader.write_header(buffer);
00056     std::memcpy(buffer + offset, sRecordType, sizeof(sRecordType));
00057     offset += sizeof(sRecordType);
00058     std::memcpy(buffer + offset, mPackageName.c_str(), mPackageName.size());
00059     offset += mPackageName.size();
00060     return offset;
00061 }
00062 
00063 RecordAAR* RecordAAR::parse(const RecordHeader &header,
00064         const uint8_t *buffer) {
00065     uint8_t offset = 0;
00066     if ((header.get_FNT() != RecordHeader::NFC_external)
00067             && (header.get_type_length() != sizeof(sRecordType))) {
00068         return NULL;
00069     } //else
00070 
00071     if (std::memcmp(buffer + offset, sRecordType, sizeof(sRecordType)) != 0) {
00072         return NULL;
00073     } //else tagType == android.com:pkg
00074 
00075     offset += sizeof(sRecordType);
00076 
00077     return new RecordAAR(
00078             std::string((const char*) buffer + offset,
00079                     header.get_payload_length()));
00080 }
00081 
00082 } /* namespace NDefLib */