1 /* 2 * Copyright (C) 2018 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #include "src/tracing/core/packet_stream_validator.h" 18 19 #include <string> 20 21 #include "gtest/gtest.h" 22 23 #include "perfetto/trace/trace_packet.pb.h" 24 25 namespace perfetto { 26 namespace { 27 28 TEST(PacketStreamValidatorTest, NullPacket) { 29 std::string ser_buf; 30 Slices seq; 31 EXPECT_TRUE(PacketStreamValidator::Validate(seq)); 32 } 33 34 TEST(PacketStreamValidatorTest, SimplePacket) { 35 protos::TracePacket proto; 36 proto.mutable_for_testing()->set_str("string field"); 37 std::string ser_buf = proto.SerializeAsString(); 38 39 Slices seq; 40 seq.emplace_back(&ser_buf[0], ser_buf.size()); 41 EXPECT_TRUE(PacketStreamValidator::Validate(seq)); 42 } 43 44 TEST(PacketStreamValidatorTest, ComplexPacket) { 45 protos::TracePacket proto; 46 proto.mutable_for_testing()->set_str("string field"); 47 proto.mutable_ftrace_events()->set_cpu(0); 48 auto* ft = proto.mutable_ftrace_events()->add_event(); 49 ft->set_pid(42); 50 ft->mutable_sched_switch()->set_prev_comm("tom"); 51 ft->mutable_sched_switch()->set_prev_pid(123); 52 ft->mutable_sched_switch()->set_next_comm("jerry"); 53 ft->mutable_sched_switch()->set_next_pid(456); 54 std::string ser_buf = proto.SerializeAsString(); 55 56 Slices seq; 57 seq.emplace_back(&ser_buf[0], ser_buf.size()); 58 EXPECT_TRUE(PacketStreamValidator::Validate(seq)); 59 } 60 61 TEST(PacketStreamValidatorTest, SimplePacketWithUid) { 62 protos::TracePacket proto; 63 proto.set_trusted_uid(123); 64 std::string ser_buf = proto.SerializeAsString(); 65 66 Slices seq; 67 seq.emplace_back(&ser_buf[0], ser_buf.size()); 68 EXPECT_FALSE(PacketStreamValidator::Validate(seq)); 69 } 70 71 TEST(PacketStreamValidatorTest, SimplePacketWithZeroUid) { 72 protos::TracePacket proto; 73 proto.set_trusted_uid(0); 74 std::string ser_buf = proto.SerializeAsString(); 75 76 Slices seq; 77 seq.emplace_back(&ser_buf[0], ser_buf.size()); 78 EXPECT_FALSE(PacketStreamValidator::Validate(seq)); 79 } 80 81 TEST(PacketStreamValidatorTest, SimplePacketWithNegativeOneUid) { 82 protos::TracePacket proto; 83 proto.set_trusted_uid(-1); 84 std::string ser_buf = proto.SerializeAsString(); 85 86 Slices seq; 87 seq.emplace_back(&ser_buf[0], ser_buf.size()); 88 EXPECT_FALSE(PacketStreamValidator::Validate(seq)); 89 } 90 91 TEST(PacketStreamValidatorTest, ComplexPacketWithUid) { 92 protos::TracePacket proto; 93 proto.mutable_for_testing()->set_str("string field"); 94 proto.mutable_ftrace_events()->set_cpu(0); 95 auto* ft = proto.mutable_ftrace_events()->add_event(); 96 ft->set_pid(42); 97 ft->mutable_sched_switch()->set_prev_comm("tom"); 98 ft->mutable_sched_switch()->set_prev_pid(123); 99 ft->mutable_sched_switch()->set_next_comm("jerry"); 100 ft->mutable_sched_switch()->set_next_pid(456); 101 proto.set_trusted_uid(123); 102 std::string ser_buf = proto.SerializeAsString(); 103 104 Slices seq; 105 seq.emplace_back(&ser_buf[0], ser_buf.size()); 106 EXPECT_FALSE(PacketStreamValidator::Validate(seq)); 107 } 108 109 TEST(PacketStreamValidatorTest, FragmentedPacket) { 110 protos::TracePacket proto; 111 proto.mutable_for_testing()->set_str("string field"); 112 proto.mutable_ftrace_events()->set_cpu(0); 113 auto* ft = proto.mutable_ftrace_events()->add_event(); 114 ft->set_pid(42); 115 ft->mutable_sched_switch()->set_prev_comm("tom"); 116 ft->mutable_sched_switch()->set_prev_pid(123); 117 ft->mutable_sched_switch()->set_next_comm("jerry"); 118 ft->mutable_sched_switch()->set_next_pid(456); 119 std::string ser_buf = proto.SerializeAsString(); 120 121 for (size_t i = 0; i < ser_buf.size(); i++) { 122 Slices seq; 123 seq.emplace_back(&ser_buf[0], i); 124 seq.emplace_back(&ser_buf[i], ser_buf.size() - i); 125 EXPECT_TRUE(PacketStreamValidator::Validate(seq)); 126 } 127 } 128 129 TEST(PacketStreamValidatorTest, FragmentedPacketWithUid) { 130 protos::TracePacket proto; 131 proto.mutable_for_testing()->set_str("string field"); 132 proto.set_trusted_uid(123); 133 proto.mutable_ftrace_events()->set_cpu(0); 134 auto* ft = proto.mutable_ftrace_events()->add_event(); 135 ft->set_pid(42); 136 ft->mutable_sched_switch()->set_prev_comm("tom"); 137 ft->mutable_sched_switch()->set_prev_pid(123); 138 ft->mutable_sched_switch()->set_next_comm("jerry"); 139 ft->mutable_sched_switch()->set_next_pid(456); 140 proto.mutable_for_testing()->set_str("foo"); 141 std::string ser_buf = proto.SerializeAsString(); 142 143 for (size_t i = 0; i < ser_buf.size(); i++) { 144 Slices seq; 145 seq.emplace_back(&ser_buf[0], i); 146 seq.emplace_back(&ser_buf[i], ser_buf.size() - i); 147 EXPECT_FALSE(PacketStreamValidator::Validate(seq)); 148 } 149 } 150 151 TEST(PacketStreamValidatorTest, TruncatedPacket) { 152 protos::TracePacket proto; 153 proto.mutable_for_testing()->set_str("string field"); 154 std::string ser_buf = proto.SerializeAsString(); 155 156 for (size_t i = 1; i < ser_buf.size(); i++) { 157 Slices seq; 158 seq.emplace_back(&ser_buf[0], i); 159 EXPECT_FALSE(PacketStreamValidator::Validate(seq)); 160 } 161 } 162 163 TEST(PacketStreamValidatorTest, TrailingGarbage) { 164 protos::TracePacket proto; 165 proto.mutable_for_testing()->set_str("string field"); 166 std::string ser_buf = proto.SerializeAsString(); 167 ser_buf += "bike is short for bichael"; 168 169 Slices seq; 170 seq.emplace_back(&ser_buf[0], ser_buf.size()); 171 EXPECT_FALSE(PacketStreamValidator::Validate(seq)); 172 } 173 174 } // namespace 175 } // namespace perfetto 176
