/******************************************************************************
*
* Copyright 2017 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
******************************************************************************/
#include <gtest/gtest.h>
#include "advertise_data_parser.h"
TEST(AdvertiseDataParserTest, IsValidEmpty) {
const std::vector<uint8_t> data0;
EXPECT_TRUE(AdvertiseDataParser::IsValid(data0));
// Single empty field allowed (treated as zero padding).
const std::vector<uint8_t> data1{0x00};
EXPECT_TRUE(AdvertiseDataParser::IsValid(data1));
}
TEST(AdvertiseDataParserTest, IsValidBad) {
// Single field, field empty.
const std::vector<uint8_t> data0{0x01};
EXPECT_FALSE(AdvertiseDataParser::IsValid(data0));
// Single field, first field length too long.
const std::vector<uint8_t> data1{0x05, 0x02, 0x00, 0x00, 0x00};
EXPECT_FALSE(AdvertiseDataParser::IsValid(data1));
// Two fields, second field length too long.
const std::vector<uint8_t> data2{0x02, 0x02, 0x00, 0x02, 0x00};
EXPECT_FALSE(AdvertiseDataParser::IsValid(data2));
// Two fields, second field empty.
const std::vector<uint8_t> data3{0x02, 0x02, 0x00, 0x01};
EXPECT_FALSE(AdvertiseDataParser::IsValid(data3));
// Non-zero padding at end of packet.
const std::vector<uint8_t> data4{0x03, 0x02, 0x01, 0x02, 0x02, 0x03, 0x01,
0x00, 0x00, 0xBA, 0xBA, 0x00, 0x00};
EXPECT_FALSE(AdvertiseDataParser::IsValid(data1));
// Non-zero padding at end of packet.
const std::vector<uint8_t> data5{0x03, 0x02, 0x01, 0x02, 0x02,
0x03, 0x01, 0x00, 0xBA};
EXPECT_FALSE(AdvertiseDataParser::IsValid(data1));
}
TEST(AdvertiseDataParserTest, IsValidGood) {
// Single field.
const std::vector<uint8_t> data0{0x03, 0x02, 0x01, 0x02};
EXPECT_TRUE(AdvertiseDataParser::IsValid(data0));
// Two fields.
const std::vector<uint8_t> data1{0x03, 0x02, 0x01, 0x02, 0x02, 0x03, 0x01};
EXPECT_TRUE(AdvertiseDataParser::IsValid(data1));
// Zero padding at end of packet.
const std::vector<uint8_t> data2{0x03, 0x02, 0x01, 0x02,
0x02, 0x03, 0x01, 0x00};
EXPECT_TRUE(AdvertiseDataParser::IsValid(data2));
// zero padding at end of packet, sample data from real device
const std::vector<uint8_t> data3{
0x10, 0x096, 0x85, 0x44, 0x32, 0x04, 0x74, 0x32, 0x03, 0x13, 0x93,
0xa, 0x32, 0x39, 0x3a, 0x65, 0x32, 0x05, 0x12, 0x50, 0x00, 0x50,
0x00, 0x02, 0x0a, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
EXPECT_TRUE(AdvertiseDataParser::IsValid(data3));
// Test Quirk for Traxxas (bad name length, should be 0x11 is 0x14)
const std::vector<uint8_t> data4{0x14, 0x09, 0x54, 0x52, 0x58, 0x20,
0x42, 0x4C, 0x45, 0x05, 0x12, 0x60,
0x00, 0xE8, 0x03, 0x02, 0x0A, 0x00};
EXPECT_TRUE(AdvertiseDataParser::IsValid(data4));
// Test Quirk for Traxxas (bad name length, should be 0x11 is 0x14)
const std::vector<uint8_t> data5{0x14, 0x09, 0x54, 0x51, 0x69, 0x20,
0x42, 0x4C, 0x45, 0x05, 0x12, 0x64,
0x00, 0xE8, 0x03, 0x02, 0x0A, 0x00};
EXPECT_TRUE(AdvertiseDataParser::IsValid(data5));
// Test Quirk for Traxxas (bad name length, should be 0x11 is 0x14)
const std::vector<uint8_t> data6{0x14, 0x09, 0x54, 0x51, 0x69, 0x20,
0x42, 0x4C, 0x45, 0x05, 0x12, 0x60,
0x00, 0xE8, 0x03, 0x02, 0x0A, 0x00};
EXPECT_TRUE(AdvertiseDataParser::IsValid(data6));
// Test Quirk for Traxxas (bad length, should be 0x11 is 0x14)
// scan response glued after advertise data
const std::vector<uint8_t> data7{
0x02, 0x01, 0x06, 0x11, 0x06, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x64, 0xB1, 0x73, 0x41, 0xE7, 0xF3, 0xC4, 0xB4, 0x80,
0x08, 0x14, 0x09, 0x54, 0x51, 0x69, 0x20, 0x42, 0x4C, 0x45,
0x05, 0x12, 0x60, 0x00, 0xE8, 0x03, 0x02, 0x0A, 0x00};
EXPECT_TRUE(AdvertiseDataParser::IsValid(data7));
}
TEST(AdvertiseDataParserTest, GetFieldByType) {
// Single field.
const std::vector<uint8_t> data0{0x03, 0x02, 0x01, 0x02};
uint8_t p_length;
const uint8_t* data =
AdvertiseDataParser::GetFieldByType(data0, 0x02, &p_length);
EXPECT_EQ(data0.data() + 2, data);
EXPECT_EQ(2, p_length);
// Two fields, second field length too long.
const std::vector<uint8_t> data1{0x02, 0x02, 0x00, 0x03, 0x00};
// First field is ok.
data = AdvertiseDataParser::GetFieldByType(data1, 0x02, &p_length);
EXPECT_EQ(data1.data() + 2, data);
EXPECT_EQ(0x01, p_length);
// Second field have bad length.
data = AdvertiseDataParser::GetFieldByType(data1, 0x03, &p_length);
EXPECT_EQ(nullptr, data);
EXPECT_EQ(0, p_length);
}
// This test makes sure that RemoveTrailingZeros is working correctly. It does
// run the RemoveTrailingZeros for ad data, then glue scan response at end of
// it, and checks that the resulting data is good.
TEST(AdvertiseDataParserTest, RemoveTrailingZeros) {
std::vector<uint8_t> podo_ad_data{
0x02, 0x01, 0x02, 0x11, 0x06, 0x66, 0x9a, 0x0c, 0x20, 0x00, 0x08,
0x37, 0xa8, 0xe5, 0x11, 0x81, 0x8b, 0xd0, 0xf0, 0xf0, 0xf0, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
std::vector<uint8_t> podo_scan_resp{
0x03, 0x19, 0x00, 0x80, 0x09, 0x09, 0x50, 0x6f, 0x64, 0x6f, 0x51,
0x35, 0x56, 0x47, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
AdvertiseDataParser::RemoveTrailingZeros(podo_ad_data);
AdvertiseDataParser::RemoveTrailingZeros(podo_scan_resp);
std::vector<uint8_t> glued(podo_ad_data);
glued.insert(glued.end(), podo_scan_resp.begin(), podo_scan_resp.end());
EXPECT_TRUE(AdvertiseDataParser::IsValid(glued));
}
// This test makes sure that RemoveTrailingZeros is removing all bytes after
// first zero length field. It does run the RemoveTrailingZeros for data with
// non-zero bytes after zero length field, then glue scan response at end of it,
// and checks that the resulting data is good. Note: specification requires all
// bytes after zero length field to be zero padding, but many legacy devices got
// this wrong, causing us to have this workaround.
TEST(AdvertiseDataParserTest, RemoveTrailingZerosMalformed) {
std::vector<uint8_t> ad_data{0x02, 0x01, 0x02, 0x11, 0x06, 0x66, 0x9a, 0x0c,
0x20, 0x00, 0x08, 0x37, 0xa8, 0xe5, 0x11, 0x81,
0x8b, 0xd0, 0xf0, 0xf0, 0xf0, 0x00, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
std::vector<uint8_t> scan_resp{0x03, 0x19, 0x00, 0x80, 0x09, 0x09, 0x50, 0x6f,
0x64, 0x6f, 0x51, 0x35, 0x56, 0x47, 0x00, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
AdvertiseDataParser::RemoveTrailingZeros(ad_data);
AdvertiseDataParser::RemoveTrailingZeros(scan_resp);
std::vector<uint8_t> glued(ad_data);
glued.insert(glued.end(), scan_resp.begin(), scan_resp.end());
EXPECT_TRUE(AdvertiseDataParser::IsValid(glued));
}