1 /*
2 * Copyright (C) 2021 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 "test/gtest_and_gmock.h"
18
19 #include <random>
20
21 #include "perfetto/ext/base/file_utils.h"
22 #include "perfetto/ext/base/string_utils.h"
23 #include "perfetto/ext/base/temp_file.h"
24 #include "perfetto/protozero/proto_decoder.h"
25 #include "perfetto/protozero/proto_utils.h"
26 #include "perfetto/protozero/scattered_heap_buffer.h"
27 #include "protos/perfetto/trace/trace.pb.h"
28 #include "src/protozero/filtering/filter_util.h"
29 #include "src/protozero/filtering/message_filter.h"
30
31 namespace protozero {
32
33 namespace {
34
TEST(MessageFilterTest,EndToEnd)35 TEST(MessageFilterTest, EndToEnd) {
36 auto schema = perfetto::base::TempFile::Create();
37 static const char kSchema[] = R"(
38 syntax = "proto2";
39 message FilterSchema {
40 message Nested {
41 optional fixed32 f32 = 2;
42 repeated string ss = 5;
43 }
44 optional int32 i32 = 1;
45 optional string str = 3;
46 repeated Nested nest = 6;
47 repeated int32 f11 = 11;
48 repeated int64 f12 = 12;
49 repeated sint32 f13 = 13;
50 repeated sint64 f14 = 14;
51 repeated fixed32 f15 = 15;
52 repeated fixed32 f16 = 16;
53 repeated fixed64 f17 = 17;
54 repeated fixed64 f18 = 18;
55 repeated float f19 = 19;
56 repeated double f20 = 20;
57 };
58 )";
59
60 perfetto::base::WriteAll(*schema, kSchema, strlen(kSchema));
61 perfetto::base::FlushFile(*schema);
62
63 FilterUtil filter;
64 ASSERT_TRUE(filter.LoadMessageDefinition(schema.path(), "", ""));
65 std::string bytecode = filter.GenerateFilterBytecode();
66 ASSERT_GT(bytecode.size(), 0u);
67
68 HeapBuffered<Message> msg;
69 msg->AppendVarInt(/*field_id=*/1, -1000000000ll);
70 msg->AppendVarInt(/*field_id=*/2, 42);
71 msg->AppendString(/*field_id=*/3, "foobar");
72 msg->AppendFixed(/*field_id=*/4, 10);
73 msg->AppendVarInt(/*field_id=*/11, INT32_MIN);
74 msg->AppendVarInt(/*field_id=*/12, INT64_MIN);
75 msg->AppendSignedVarInt(/*field_id=*/13, INT32_MIN);
76 msg->AppendSignedVarInt(/*field_id=*/14, INT64_MIN);
77 msg->AppendFixed(/*field_id=*/15, static_cast<int32_t>(INT32_MIN));
78 msg->AppendFixed(/*field_id=*/16, static_cast<int32_t>(INT32_MAX));
79 msg->AppendFixed(/*field_id=*/17, static_cast<int64_t>(INT64_MIN));
80 msg->AppendFixed(/*field_id=*/18, static_cast<int64_t>(INT64_MAX));
81 msg->AppendFixed(/*field_id=*/19, FLT_EPSILON);
82 msg->AppendFixed(/*field_id=*/20, DBL_EPSILON);
83
84 auto* nest = msg->BeginNestedMessage<Message>(/*field_id=*/6);
85 nest->AppendFixed(/*field_id=*/1, 10);
86 nest->AppendFixed(/*field_id=*/2, static_cast<int32_t>(-2000000000ll));
87 nest->AppendString(/*field_id=*/4, "stripped");
88 nest->AppendString(/*field_id=*/5, "");
89 nest->Finalize();
90
91 MessageFilter flt;
92 ASSERT_TRUE(flt.LoadFilterBytecode(bytecode.data(), bytecode.size()));
93
94 std::vector<uint8_t> encoded = msg.SerializeAsArray();
95
96 for (int repetitions = 0; repetitions < 3; ++repetitions) {
97 auto filtered = flt.FilterMessage(encoded.data(), encoded.size());
98 ASSERT_LT(filtered.size, encoded.size());
99
100 ProtoDecoder dec(filtered.data.get(), filtered.size);
101 EXPECT_TRUE(dec.FindField(1).valid());
102 EXPECT_EQ(dec.FindField(1).as_int64(), -1000000000ll);
103 EXPECT_FALSE(dec.FindField(2).valid());
104 EXPECT_TRUE(dec.FindField(3).valid());
105 EXPECT_EQ(dec.FindField(3).as_std_string(), "foobar");
106 EXPECT_FALSE(dec.FindField(4).valid());
107 EXPECT_TRUE(dec.FindField(6).valid());
108 for (uint32_t i = 11; i <= 20; ++i)
109 EXPECT_TRUE(dec.FindField(i).valid());
110
111 EXPECT_EQ(dec.FindField(11).as_int32(), INT32_MIN);
112 EXPECT_EQ(dec.FindField(12).as_int64(), INT64_MIN);
113 EXPECT_EQ(dec.FindField(13).as_sint32(), INT32_MIN);
114 EXPECT_EQ(dec.FindField(14).as_sint64(), INT64_MIN);
115 EXPECT_EQ(dec.FindField(15).as_int32(), INT32_MIN);
116 EXPECT_EQ(dec.FindField(16).as_int32(), INT32_MAX);
117 EXPECT_EQ(dec.FindField(17).as_int64(), INT64_MIN);
118 EXPECT_EQ(dec.FindField(18).as_int64(), INT64_MAX);
119 EXPECT_EQ(dec.FindField(19).as_float(), FLT_EPSILON);
120 EXPECT_EQ(dec.FindField(20).as_double(), DBL_EPSILON);
121
122 ProtoDecoder nest_dec(dec.FindField(6).as_bytes());
123 EXPECT_FALSE(nest_dec.FindField(1).valid());
124 EXPECT_TRUE(nest_dec.FindField(2).valid());
125 EXPECT_EQ(nest_dec.FindField(2).as_int32(), -2000000000ll);
126 EXPECT_TRUE(nest_dec.FindField(5).valid());
127 EXPECT_EQ(nest_dec.FindField(5).as_bytes().size, 0u);
128 }
129 }
130
TEST(MessageFilterTest,Passthrough)131 TEST(MessageFilterTest, Passthrough) {
132 auto schema = perfetto::base::TempFile::Create();
133 static const char kSchema[] = R"(
134 syntax = "proto2";
135 message TracePacket {
136 optional int64 timestamp = 1;
137 optional TraceConfig cfg = 2;
138 optional TraceConfig cfg_filtered = 3;
139 optional string other = 4;
140 };
141 message SubConfig {
142 optional string f4 = 6;
143 }
144 message TraceConfig {
145 optional int64 f1 = 3;
146 optional string f2 = 4;
147 optional SubConfig f3 = 5;
148 }
149 )";
150
151 perfetto::base::WriteAll(*schema, kSchema, strlen(kSchema));
152 perfetto::base::FlushFile(*schema);
153
154 FilterUtil filter;
155 ASSERT_TRUE(filter.LoadMessageDefinition(
156 schema.path(), "", "", {"TracePacket:other", "TracePacket:cfg"}));
157 std::string bytecode = filter.GenerateFilterBytecode();
158 ASSERT_GT(bytecode.size(), 0u);
159
160 HeapBuffered<Message> msg;
161 msg->AppendVarInt(/*field_id=*/1, 10);
162 msg->AppendString(/*field_id=*/4, "other_string");
163
164 // Fill `cfg`.
165 auto* nest = msg->BeginNestedMessage<Message>(/*field_id=*/2);
166 nest->AppendVarInt(/*field_id=*/3, 100);
167 nest->AppendString(/*field_id=*/4, "f2.payload");
168 nest->AppendString(/*field_id=*/99, "not_in_original_schema");
169 auto* nest2 = nest->BeginNestedMessage<Message>(/*field_id=*/5);
170 nest2->AppendString(/*field_id=*/6, "subconfig.f4");
171 nest2->Finalize();
172 nest->Finalize();
173
174 // Fill `cfg_filtered`.
175 nest = msg->BeginNestedMessage<Message>(/*field_id=*/3);
176 nest->AppendVarInt(/*field_id=*/3, 200); // This should be propagated.
177 nest->AppendVarInt(/*field_id=*/6, 300); // This shoudl be filtered out.
178 nest->Finalize();
179
180 MessageFilter flt;
181 ASSERT_TRUE(flt.LoadFilterBytecode(bytecode.data(), bytecode.size()));
182
183 std::vector<uint8_t> encoded = msg.SerializeAsArray();
184
185 auto filtered = flt.FilterMessage(encoded.data(), encoded.size());
186 ASSERT_LT(filtered.size, encoded.size());
187
188 ProtoDecoder dec(filtered.data.get(), filtered.size);
189 EXPECT_EQ(dec.FindField(1).as_int64(), 10);
190 EXPECT_EQ(dec.FindField(4).as_std_string(), "other_string");
191
192 EXPECT_TRUE(dec.FindField(2).valid());
193 ProtoDecoder nest_dec(dec.FindField(2).as_bytes());
194 EXPECT_EQ(nest_dec.FindField(3).as_int32(), 100);
195 EXPECT_EQ(nest_dec.FindField(4).as_std_string(), "f2.payload");
196 EXPECT_TRUE(nest_dec.FindField(5).valid());
197 ProtoDecoder nest_dec2(nest_dec.FindField(5).as_bytes());
198 EXPECT_EQ(nest_dec2.FindField(6).as_std_string(), "subconfig.f4");
199
200 // Field 99 should be preserved anyways even if it wasn't in the original
201 // schema because the whole TracePacket submessage was passed through.
202 EXPECT_TRUE(nest_dec.FindField(99).valid());
203 EXPECT_EQ(nest_dec.FindField(99).as_std_string(), "not_in_original_schema");
204
205 // Check that the field `cfg_filtered` contains only `f1`,`f2`,`f3`.
206 EXPECT_TRUE(dec.FindField(3).valid());
207 ProtoDecoder nest_dec3(dec.FindField(3).as_bytes());
208 EXPECT_EQ(nest_dec3.FindField(3).as_int32(), 200);
209 EXPECT_FALSE(nest_dec3.FindField(6).valid());
210 }
211
TEST(MessageFilterTest,ChangeRoot)212 TEST(MessageFilterTest, ChangeRoot) {
213 auto schema = perfetto::base::TempFile::Create();
214 static const char kSchema[] = R"(
215 syntax = "proto2";
216 message FilterSchema {
217 message Nested {
218 message Nested2 {
219 optional int32 e = 5;
220 }
221 optional int32 c = 3;
222 repeated Nested2 d = 4;
223 }
224 optional int32 a = 1;
225 optional Nested b = 2;
226 };
227 )";
228
229 perfetto::base::WriteAll(*schema, kSchema, strlen(kSchema));
230 perfetto::base::FlushFile(*schema);
231
232 FilterUtil filter;
233 ASSERT_TRUE(filter.LoadMessageDefinition(schema.path(), "", ""));
234 std::string bytecode = filter.GenerateFilterBytecode();
235 ASSERT_GT(bytecode.size(), 0u);
236
237 HeapBuffered<Message> msg;
238 msg->AppendVarInt(/*field_id=*/1, 101);
239 msg->AppendVarInt(/*field_id=*/3, 103);
240 msg->AppendVarInt(/*field_id=*/5, 105);
241 auto* nest = msg->BeginNestedMessage<Message>(/*field_id=*/4); // Nested b.
242 nest->AppendVarInt(/*field_id=*/5, 205);
243 nest->Finalize();
244 std::vector<uint8_t> encoded = msg.SerializeAsArray();
245
246 MessageFilter flt;
247 ASSERT_TRUE(flt.LoadFilterBytecode(bytecode.data(), bytecode.size()));
248 uint32_t roots[2]{2, 4};
249
250 // First set the root to field id ".2" (.b). The fliter should happen treating
251 // |Nested| as rot, so allowing only field 3 and 4 (Nested2) through.
252 {
253 flt.SetFilterRoot(roots, 1);
254 auto filtered = flt.FilterMessage(encoded.data(), encoded.size());
255 ASSERT_LT(filtered.size, encoded.size());
256 ProtoDecoder dec(filtered.data.get(), filtered.size);
257 EXPECT_FALSE(dec.FindField(1).valid());
258 EXPECT_TRUE(dec.FindField(3).valid());
259 EXPECT_EQ(dec.FindField(3).as_int32(), 103);
260 EXPECT_FALSE(dec.FindField(5).valid());
261 EXPECT_TRUE(dec.FindField(4).valid());
262 EXPECT_EQ(dec.FindField(4).as_std_string(), "(\xCD\x01");
263 }
264
265 // Now set the root to ".2.4" (.b.d). This should allow only the field "e"
266 // to pass through.
267 {
268 flt.SetFilterRoot(roots, 2);
269 auto filtered = flt.FilterMessage(encoded.data(), encoded.size());
270 ASSERT_LT(filtered.size, encoded.size());
271 ProtoDecoder dec(filtered.data.get(), filtered.size);
272 EXPECT_FALSE(dec.FindField(1).valid());
273 EXPECT_FALSE(dec.FindField(3).valid());
274 EXPECT_FALSE(dec.FindField(4).valid());
275 EXPECT_TRUE(dec.FindField(5).valid());
276 EXPECT_EQ(dec.FindField(5).as_int32(), 105);
277 }
278 }
279
TEST(MessageFilterTest,MalformedInput)280 TEST(MessageFilterTest, MalformedInput) {
281 // Create and load a simple filter.
282 auto schema = perfetto::base::TempFile::Create();
283 static const char kSchema[] = R"(
284 syntax = "proto2";
285 message FilterSchema {
286 message Nested {
287 optional fixed32 f32 = 4;
288 repeated string ss = 5;
289 }
290 optional int32 i32 = 1;
291 optional string str = 2;
292 repeated Nested nest = 3;
293 };
294 )";
295 perfetto::base::WriteAll(*schema, kSchema, strlen(kSchema));
296 perfetto::base::FlushFile(*schema);
297 FilterUtil filter;
298 ASSERT_TRUE(filter.LoadMessageDefinition(schema.path(), "", ""));
299 std::string bytecode = filter.GenerateFilterBytecode();
300 ASSERT_GT(bytecode.size(), 0u);
301 MessageFilter flt;
302 ASSERT_TRUE(flt.LoadFilterBytecode(bytecode.data(), bytecode.size()));
303
304 {
305 // A malformed message found by the fuzzer.
306 static const uint8_t kData[]{
307 0x52, 0x21, // ID=10, type=len-delimited, len=33.
308 0xa0, 0xa4, // Early terminating payload.
309 };
310 auto res = flt.FilterMessage(kData, sizeof(kData));
311 EXPECT_TRUE(res.error);
312 }
313
314 {
315 // A malformed message which contains a non-terminated varint.
316 static const uint8_t kData[]{
317 0x08, 0x2A, // A valid varint field id=1 value=42 (0x2A).
318 0x08, 0xFF, // An unterminated varint.
319 };
320 auto res = flt.FilterMessage(kData, sizeof(kData));
321 EXPECT_TRUE(res.error);
322 }
323
324 {
325 // A malformed message which contains a sub-message with a field that brings
326 // it out of the outer size.
327 static const uint8_t kData[]{
328 0x08, 0x2A, // A valid varint field id=1 value=42 (0x2A).
329 0x1A, 0x04, // A len-delim field, id=3, length=4.
330 // The nested message |nest| starts here.
331 0x25, 0x0, 0x0, 0x0, 0x01, // A fixed32 field, id=4.
332 // Note that the fixed32 field has an expected length of 4 but that
333 // overflows the size of the |nest| method, because with its 0x25
334 // preamble it becomes 5 bytes. At this point this should cause a
335 // persistent failure.
336 };
337 auto res = flt.FilterMessage(kData, sizeof(kData));
338 EXPECT_TRUE(res.error);
339 }
340
341 // A parsing failure shoulnd't affect the ability to filter the following
342 // message. Try again but this time with a valid message.
343 {
344 static const uint8_t kData[]{
345 0x08, 0x2A, // A valid varint field id=1 value=42 (0x2A).
346 0x1A, 0x05, // A len-delim field, id=3, length=5.
347 0x25, 0x0, 0x0, 0x0, 0x01, // A fixed32 field, id=4.
348 0x38, 0x42, // A valid but not allowed varint field id=7.
349 };
350 auto res = flt.FilterMessage(kData, sizeof(kData));
351 EXPECT_FALSE(res.error);
352 EXPECT_EQ(res.size, sizeof(kData) - 2); // last 2 bytes should be skipped.
353 EXPECT_EQ(memcmp(kData, res.data.get(), res.size), 0);
354 }
355 }
356
357 // It processes a real test trace with a real filter. The filter has been
358 // obtained from the full upstream perfetto proto (+ re-adding the for_testing
359 // field which got removed after adding most test traces). This covers the most
360 // complex case of filtering a real trace with a filter that allows all possible
361 // fields, hence re-entering deeply in most nested fields.
TEST(MessageFilterTest,RealTracePassthrough)362 TEST(MessageFilterTest, RealTracePassthrough) {
363 // This is test/data/android_log_ring_buffer_mode.pb. It's re-encoded as a
364 // constant because unittests cannot depend on test/data/, only integration
365 // tests can.
366 static const uint8_t kTraceData[]{
367 0x0a, 0x16, 0x18, 0x8f, 0x4e, 0xa2, 0x02, 0x10, 0x82, 0x47, 0x7a, 0x76,
368 0xb2, 0x8d, 0x42, 0xba, 0x81, 0xdc, 0x33, 0x32, 0x6d, 0x57, 0xa0, 0x79,
369 0x0a, 0x5f, 0x18, 0x8f, 0x4e, 0x32, 0x5a, 0x0a, 0x09, 0x08, 0x06, 0x10,
370 0xf4, 0xd3, 0xea, 0xbb, 0xba, 0x55, 0x0a, 0x0c, 0x08, 0x02, 0x10, 0xf9,
371 0xcc, 0xb4, 0xd1, 0xe8, 0xdc, 0xa5, 0xbc, 0x15, 0x0a, 0x09, 0x08, 0x04,
372 0x10, 0x86, 0xb9, 0x9c, 0xba, 0xba, 0x55, 0x0a, 0x0c, 0x08, 0x01, 0x10,
373 0xeb, 0xe9, 0x82, 0xd3, 0xe8, 0xdc, 0xa5, 0xbc, 0x15, 0x0a, 0x09, 0x08,
374 0x03, 0x10, 0xac, 0xd6, 0xea, 0xbb, 0xba, 0x55, 0x0a, 0x09, 0x08, 0x05,
375 0x10, 0x9b, 0xe1, 0xd8, 0xbb, 0xba, 0x55, 0x0a, 0x07, 0x08, 0x07, 0x10,
376 0xf5, 0xe6, 0xd9, 0x55, 0x0a, 0x07, 0x08, 0x08, 0x10, 0xc1, 0xcc, 0xa7,
377 0x41, 0x0a, 0x27, 0x18, 0x8f, 0x4e, 0x9a, 0x02, 0x21, 0x0a, 0x13, 0x08,
378 0xf0, 0x1f, 0x10, 0x01, 0x18, 0x00, 0x20, 0x00, 0x28, 0x00, 0x30, 0x00,
379 0x38, 0x00, 0x40, 0x00, 0x48, 0x00, 0x10, 0x01, 0x18, 0x07, 0x20, 0x06,
380 0x28, 0x0b, 0x30, 0x01, 0x38, 0x01, 0x0a, 0xd5, 0x01, 0x18, 0x8f, 0x4e,
381 0x8a, 0x02, 0xce, 0x01, 0x0a, 0x06, 0x08, 0x80, 0x80, 0x02, 0x20, 0x00,
382 0x12, 0xa5, 0x01, 0x0a, 0xa2, 0x01, 0x0a, 0x0b, 0x61, 0x6e, 0x64, 0x72,
383 0x6f, 0x69, 0x64, 0x2e, 0x6c, 0x6f, 0x67, 0x10, 0x00, 0x18, 0x00, 0x20,
384 0x00, 0xa2, 0x06, 0x04, 0x50, 0x00, 0x58, 0x00, 0xaa, 0x06, 0x02, 0x0a,
385 0x00, 0xb2, 0x06, 0x08, 0x08, 0x00, 0x10, 0x00, 0x18, 0x00, 0x20, 0x00,
386 0xba, 0x06, 0x06, 0x10, 0x00, 0x18, 0x00, 0x20, 0x00, 0xc2, 0x06, 0x06,
387 0x08, 0x00, 0x18, 0x00, 0x28, 0x00, 0xca, 0x06, 0x0a, 0x08, 0x00, 0x28,
388 0x00, 0x32, 0x04, 0x28, 0x00, 0x30, 0x00, 0xd2, 0x06, 0x02, 0x08, 0x00,
389 0xda, 0x06, 0x02, 0x18, 0x00, 0xc2, 0x3e, 0x00, 0xfa, 0xff, 0xff, 0xff,
390 0x07, 0x46, 0x08, 0x00, 0x10, 0x00, 0x18, 0x00, 0x20, 0x00, 0x28, 0x00,
391 0x32, 0x3a, 0x08, 0x00, 0x10, 0x00, 0x18, 0x00, 0x20, 0x00, 0x29, 0x00,
392 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x31, 0x00, 0x00, 0x00, 0x00,
393 0x00, 0x00, 0x00, 0x00, 0x3d, 0x00, 0x00, 0x00, 0x00, 0x45, 0x00, 0x00,
394 0x00, 0x00, 0x49, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x55,
395 0x00, 0x00, 0x00, 0x00, 0x58, 0x00, 0x60, 0x00, 0x6a, 0x00, 0x72, 0x00,
396 0x18, 0xe0, 0xd4, 0x03, 0x20, 0x00, 0x28, 0x00, 0x3a, 0x06, 0x08, 0x00,
397 0x10, 0x00, 0x18, 0x00, 0x40, 0x00, 0x48, 0x00, 0x50, 0x00, 0x5a, 0x02,
398 0x08, 0x00, 0x60, 0x00, 0x68, 0x00, 0x0a, 0x94, 0x01, 0x40, 0xd9, 0xf4,
399 0x98, 0x96, 0xbe, 0x54, 0xba, 0x02, 0x84, 0x81, 0x80, 0x00, 0x0a, 0xff,
400 0x80, 0x80, 0x00, 0x38, 0x04, 0x32, 0x08, 0x70, 0x65, 0x72, 0x66, 0x65,
401 0x74, 0x74, 0x6f, 0x42, 0x5d, 0x61, 0x6e, 0x64, 0x72, 0x6f, 0x69, 0x64,
402 0x5f, 0x6c, 0x6f, 0x67, 0x5f, 0x64, 0x61, 0x74, 0x61, 0x5f, 0x73, 0x6f,
403 0x75, 0x72, 0x63, 0x65, 0x2e, 0x63, 0x63, 0x3a, 0x31, 0x35, 0x35, 0x20,
404 0x53, 0x74, 0x61, 0x72, 0x74, 0x69, 0x6e, 0x67, 0x20, 0x41, 0x6e, 0x64,
405 0x72, 0x6f, 0x69, 0x64, 0x20, 0x6c, 0x6f, 0x67, 0x20, 0x64, 0x61, 0x74,
406 0x61, 0x20, 0x73, 0x6f, 0x75, 0x72, 0x63, 0x65, 0x3a, 0x20, 0x73, 0x74,
407 0x72, 0x65, 0x61, 0x6d, 0x20, 0x74, 0x61, 0x69, 0x6c, 0x3d, 0x31, 0x20,
408 0x6c, 0x69, 0x64, 0x73, 0x3d, 0x30, 0x2c, 0x32, 0x2c, 0x33, 0x2c, 0x34,
409 0x2c, 0x37, 0x28, 0xdb, 0xe6, 0x9b, 0xfb, 0xeb, 0xdb, 0xa5, 0xbc, 0x15,
410 0x08, 0x00, 0x10, 0xb5, 0x58, 0x18, 0xb5, 0x58, 0x20, 0x00, 0x18, 0x8f,
411 0x4e, 0x0a, 0xf4, 0x0a, 0x40, 0xb2, 0x84, 0xde, 0xdd, 0x8f, 0x55, 0xba,
412 0x02, 0xe4, 0x8a, 0x80, 0x00, 0x0a, 0xe4, 0x80, 0x80, 0x00, 0x38, 0x04,
413 0x32, 0x12, 0x76, 0x65, 0x6e, 0x64, 0x6f, 0x72, 0x2e, 0x72, 0x6d, 0x74,
414 0x5f, 0x73, 0x74, 0x6f, 0x72, 0x61, 0x67, 0x65, 0x42, 0x38, 0x72, 0x6d,
415 0x74, 0x5f, 0x73, 0x74, 0x6f, 0x72, 0x61, 0x67, 0x65, 0x5f, 0x63, 0x6f,
416 0x6e, 0x6e, 0x65, 0x63, 0x74, 0x5f, 0x63, 0x62, 0x3a, 0x20, 0x63, 0x6c,
417 0x6e, 0x74, 0x5f, 0x68, 0x3d, 0x30, 0x78, 0x31, 0x34, 0x20, 0x63, 0x6f,
418 0x6e, 0x6e, 0x5f, 0x68, 0x3d, 0x30, 0x78, 0x37, 0x32, 0x31, 0x64, 0x61,
419 0x30, 0x37, 0x31, 0x30, 0x30, 0x0a, 0x28, 0x92, 0xad, 0xf6, 0xf0, 0xbd,
420 0xdc, 0xa5, 0xbc, 0x15, 0x08, 0x00, 0x10, 0xe9, 0x06, 0x18, 0xe9, 0x06,
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672 0x00, 0x08, 0x1a, 0x18, 0x00, 0x10, 0x00, 0x18, 0x8f, 0x4e};
673
674 static const uint8_t kFilterBytecode[]{
675 0x0b, 0x01, 0x00, 0x0b, 0x60, 0x13, 0x02, 0x19, 0x23, 0x08, 0x2b, 0x09,
676 0x33, 0x0f, 0x3b, 0x10, 0x41, 0x4b, 0x05, 0x51, 0x5b, 0x12, 0x63, 0x72,
677 0x69, 0x8b, 0x02, 0x21, 0x93, 0x02, 0x33, 0x9b, 0x02, 0x35, 0xa1, 0x02,
678 0xab, 0x02, 0x37, 0xb3, 0x02, 0x07, 0xbb, 0x02, 0x3e, 0xc3, 0x02, 0x3d,
679 0xca, 0x02, 0x02, 0xdb, 0x02, 0x1b, 0xe3, 0x02, 0x11, 0xeb, 0x02, 0x40,
680 0xf3, 0x02, 0x04, 0xfb, 0x02, 0x41, 0x83, 0x03, 0x34, 0x8b, 0x03, 0x42,
681 0x91, 0x03, 0x9b, 0x03, 0x43, 0xa3, 0x03, 0x46, 0xab, 0x03, 0x49, 0xb3,
682 0x03, 0x04, 0xbb, 0x03, 0x07, 0xc3, 0x03, 0x4b, 0xcb, 0x03, 0x4c, 0xd1,
683 0x03, 0xdb, 0x03, 0x73, 0xe3, 0x03, 0x5f, 0xeb, 0x03, 0x5b, 0xf3, 0x03,
684 0x4d, 0xfb, 0x03, 0x04, 0x83, 0x04, 0x5d, 0x8b, 0x04, 0x4e, 0x93, 0x04,
685 0x4f, 0x9b, 0x04, 0x50, 0xa3, 0x04, 0x51, 0xab, 0x04, 0x3c, 0xb3, 0x04,
686 0x0e, 0xbb, 0x04, 0x04, 0xc3, 0x04, 0x69, 0xcb, 0x04, 0x53, 0xd3, 0x04,
687 0x3c, 0xdb, 0x04, 0x04, 0xe3, 0x04, 0x56, 0xeb, 0x04, 0x58, 0xf3, 0x04,
688 0x5a, 0xa3, 0x38, 0x70, 0x00, 0x0b, 0x03, 0x13, 0x04, 0x19, 0x00, 0x0a,
689 0x03, 0x23, 0x04, 0x29, 0x00, 0x0a, 0x03, 0x00, 0x0b, 0x06, 0x11, 0x00,
690 0x0a, 0x0a, 0x5b, 0x07, 0x62, 0x03, 0x00, 0x0a, 0x04, 0x00, 0x0a, 0x02,
691 0x1b, 0x04, 0x00, 0x0b, 0x0a, 0x13, 0x0d, 0x1b, 0x0e, 0x21, 0x2b, 0x0e,
692 0x00, 0x0a, 0x0d, 0x73, 0x0b, 0x7a, 0x02, 0x00, 0x0a, 0x09, 0x53, 0x0c,
693 0x00, 0x0a, 0x02, 0x1b, 0x0c, 0x23, 0x0c, 0x2a, 0x04, 0x00, 0x0a, 0x05,
694 0x00, 0x0a, 0x02, 0x00, 0x0b, 0x07, 0x11, 0x00, 0x0b, 0x0e, 0x13, 0x0e,
695 0x1b, 0x11, 0x22, 0x02, 0x33, 0x0e, 0x39, 0x43, 0x0e, 0x49, 0x53, 0x0e,
696 0x00, 0x0a, 0x08, 0x00, 0x0a, 0x03, 0x23, 0x13, 0x2b, 0x15, 0x33, 0x20,
697 0x42, 0x05, 0x82, 0x01, 0x02, 0xa1, 0x01, 0xab, 0x01, 0x0e, 0xb2, 0x01,
698 0x02, 0xc3, 0x01, 0x16, 0xcb, 0x01, 0x0e, 0xd3, 0x01, 0x15, 0xdb, 0x01,
699 0x0e, 0xe3, 0x01, 0x07, 0xeb, 0x01, 0x1e, 0xf2, 0x01, 0x02, 0x83, 0x02,
700 0x1f, 0x8b, 0x02, 0x07, 0x91, 0x02, 0x9b, 0x02, 0x0e, 0xa1, 0x02, 0xb3,
701 0x02, 0x04, 0xbb, 0x02, 0x15, 0xc3, 0x02, 0x15, 0xcb, 0x02, 0x04, 0xd1,
702 0x02, 0xdb, 0x02, 0x15, 0xe2, 0x02, 0x03, 0x00, 0x0a, 0x07, 0x43, 0x14,
703 0x4a, 0x02, 0x5b, 0x13, 0x63, 0x13, 0x00, 0x0a, 0x02, 0x1b, 0x14, 0x23,
704 0x14, 0x2a, 0x04, 0x00, 0x09, 0x00, 0x0b, 0x17, 0x12, 0x0c, 0x73, 0x19,
705 0x7b, 0x1c, 0x83, 0x01, 0x1d, 0x8b, 0x01, 0x1b, 0x00, 0x0b, 0x0d, 0x13,
706 0x18, 0x00, 0x0a, 0x2e, 0x00, 0x0a, 0x03, 0x23, 0x1a, 0x2b, 0x1a, 0x33,
707 0x1b, 0x00, 0x0a, 0x09, 0x53, 0x07, 0x00, 0x0a, 0x07, 0x00, 0x09, 0x13,
708 0x1a, 0x00, 0x0a, 0x03, 0x23, 0x1a, 0x00, 0x0a, 0x03, 0x23, 0x0e, 0x2a,
709 0x02, 0x00, 0x0a, 0x0a, 0x00, 0x0a, 0x04, 0x32, 0x0a, 0x92, 0x01, 0x02,
710 0x00, 0x0b, 0x22, 0x13, 0x23, 0x1a, 0x03, 0x33, 0x04, 0x3b, 0x07, 0x42,
711 0x03, 0x5b, 0x15, 0x62, 0x03, 0x81, 0x01, 0x8b, 0x01, 0x32, 0x92, 0x01,
712 0x02, 0xa3, 0x01, 0x1b, 0xab, 0x01, 0x15, 0xb2, 0x01, 0x03, 0xcb, 0x01,
713 0x0d, 0xda, 0x01, 0x05, 0x83, 0x02, 0x15, 0x00, 0x09, 0x21, 0x00, 0x0b,
714 0x24, 0x12, 0x02, 0x00, 0x0a, 0x04, 0x32, 0x03, 0xa3, 0x06, 0x25, 0xab,
715 0x06, 0x0d, 0xb3, 0x06, 0x26, 0xbb, 0x06, 0x27, 0xc3, 0x06, 0x1b, 0xcb,
716 0x06, 0x28, 0xd3, 0x06, 0x07, 0xdb, 0x06, 0x2b, 0xe3, 0x06, 0x07, 0xeb,
717 0x06, 0x15, 0xf3, 0x06, 0x2a, 0xfb, 0x06, 0x2c, 0x83, 0x07, 0x0e, 0x8b,
718 0x07, 0x07, 0x93, 0x07, 0x15, 0x9b, 0x07, 0x2f, 0xc1, 0x3e, 0xcb, 0x3e,
719 0x30, 0xf9, 0xff, 0xff, 0xff, 0x07, 0x00, 0x0a, 0x03, 0x52, 0x02, 0x63,
720 0x15, 0x6a, 0x02, 0x00, 0x0a, 0x05, 0x33, 0x0e, 0x00, 0x0a, 0x04, 0x32,
721 0x03, 0x00, 0x0a, 0x02, 0x22, 0x02, 0x33, 0x29, 0x3a, 0x05, 0x6a, 0x0e,
722 0x00, 0x2a, 0x02, 0x00, 0x0a, 0x02, 0x1b, 0x0e, 0x22, 0x04, 0x00, 0x09,
723 0x1a, 0x02, 0x00, 0x0a, 0x0d, 0x7b, 0x2d, 0x83, 0x01, 0x2e, 0x8a, 0x01,
724 0x02, 0x00, 0x0a, 0x02, 0x1b, 0x0e, 0x21, 0x00, 0x0b, 0x0d, 0x11, 0x00,
725 0x09, 0xa3, 0x06, 0x0e, 0x00, 0x0a, 0x05, 0x33, 0x31, 0x00, 0x0a, 0x0e,
726 0x00, 0x09, 0x13, 0x0d, 0x19, 0x00, 0x09, 0x13, 0x34, 0x1a, 0x02, 0x00,
727 0x0a, 0x09, 0x00, 0x0b, 0x36, 0x12, 0x09, 0x5b, 0x0d, 0x00, 0x0a, 0x13,
728 0x00, 0x0b, 0x0e, 0x13, 0x07, 0x1b, 0x0e, 0x23, 0x11, 0x2b, 0x38, 0x32,
729 0x02, 0x00, 0x09, 0x13, 0x3b, 0x1a, 0x02, 0x2b, 0x39, 0x32, 0x09, 0x00,
730 0x0a, 0x03, 0x23, 0x3a, 0x2a, 0x02, 0x00, 0x0b, 0x04, 0x00, 0x0a, 0x06,
731 0x42, 0x02, 0x00, 0x0a, 0x06, 0x00, 0x0b, 0x07, 0x13, 0x04, 0x00, 0x0b,
732 0x3f, 0x13, 0x04, 0x00, 0x0a, 0x08, 0x4b, 0x07, 0x00, 0x0b, 0x07, 0x12,
733 0x02, 0x00, 0x0b, 0x0d, 0x12, 0x02, 0x00, 0x0a, 0x06, 0x3b, 0x0e, 0x42,
734 0x02, 0x00, 0x0b, 0x44, 0x12, 0x02, 0x00, 0x0b, 0x45, 0x13, 0x45, 0x00,
735 0x09, 0x13, 0x04, 0x1b, 0x0e, 0x00, 0x0b, 0x47, 0x13, 0x04, 0x19, 0x00,
736 0x0b, 0x48, 0x13, 0x0d, 0x1a, 0x03, 0x00, 0x0a, 0x03, 0x2a, 0x06, 0x00,
737 0x0a, 0x05, 0x33, 0x0e, 0x3b, 0x4a, 0x42, 0x08, 0x00, 0x0b, 0x0e, 0x13,
738 0x0e, 0x1b, 0x0e, 0x00, 0x09, 0x13, 0x1b, 0x23, 0x0e, 0x2a, 0x02, 0x3b,
739 0x0e, 0x43, 0x0e, 0x4b, 0x11, 0x00, 0x0b, 0x0d, 0x00, 0x0a, 0x08, 0x4b,
740 0x07, 0x82, 0x01, 0x05, 0x00, 0x0b, 0x0d, 0x13, 0x3c, 0x00, 0x0a, 0x06,
741 0x82, 0x01, 0x03, 0x9b, 0x01, 0x15, 0x00, 0x0b, 0x0e, 0x00, 0x09, 0x13,
742 0x52, 0x00, 0x0a, 0x0f, 0x00, 0x0a, 0x02, 0x1b, 0x54, 0x00, 0x09, 0x13,
743 0x55, 0x1b, 0x07, 0x00, 0x0a, 0x04, 0x2b, 0x07, 0x00, 0x0b, 0x04, 0x13,
744 0x11, 0x1b, 0x0d, 0x23, 0x57, 0x2b, 0x15, 0x00, 0x0a, 0x0b, 0x00, 0x0b,
745 0x59, 0x12, 0x02, 0x23, 0x0e, 0x00, 0x0b, 0x07, 0x00, 0x0a, 0x02, 0x1b,
746 0x0e, 0x00, 0x0a, 0x02, 0x1b, 0x5c, 0x00, 0x09, 0x13, 0x04, 0x00, 0x0a,
747 0x02, 0x1b, 0x5e, 0x00, 0x0a, 0x02, 0x1b, 0x0e, 0x23, 0x0e, 0x00, 0x0a,
748 0x02, 0x1b, 0x1b, 0x23, 0x11, 0x29, 0x33, 0x0d, 0x3b, 0x0e, 0x43, 0x3c,
749 0x00, 0x09, 0x13, 0x61, 0x19, 0x23, 0x57, 0x00, 0x0a, 0x02, 0x1b, 0x0e,
750 0x23, 0x1b, 0x5b, 0x0e, 0x63, 0x04, 0x6b, 0x0e, 0x73, 0x04, 0x7b, 0x04,
751 0x83, 0x01, 0x04, 0x8b, 0x01, 0x0d, 0x93, 0x01, 0x04, 0x9b, 0x01, 0x04,
752 0xa3, 0x01, 0x0d, 0xab, 0x01, 0x15, 0xb3, 0x01, 0x15, 0xbb, 0x01, 0x0e,
753 0xc3, 0x01, 0x15, 0xcb, 0x01, 0x15, 0xd3, 0x01, 0x15, 0xdb, 0x01, 0x0d,
754 0xe3, 0x01, 0x3c, 0xeb, 0x01, 0x04, 0xf3, 0x01, 0x3c, 0xfb, 0x01, 0x0d,
755 0x83, 0x02, 0x3c, 0x8b, 0x02, 0x1b, 0x93, 0x02, 0x3c, 0x9b, 0x02, 0x0d,
756 0xa3, 0x02, 0x04, 0xab, 0x02, 0x0e, 0xb3, 0x02, 0x0e, 0xbb, 0x02, 0x0e,
757 0xc3, 0x02, 0x04, 0xcb, 0x02, 0x0d, 0xd3, 0x02, 0x0d, 0xdb, 0x02, 0x07,
758 0xe3, 0x02, 0x04, 0xeb, 0x02, 0x1b, 0xf3, 0x02, 0x04, 0xfb, 0x02, 0x15,
759 0x83, 0x03, 0x0e, 0x8b, 0x03, 0x15, 0x93, 0x03, 0x1b, 0x9b, 0x03, 0x15,
760 0xa3, 0x03, 0x0d, 0xab, 0x03, 0x15, 0xb3, 0x03, 0x15, 0xbb, 0x03, 0x15,
761 0xc3, 0x03, 0x15, 0xcb, 0x03, 0x15, 0xd3, 0x03, 0x0e, 0xdb, 0x03, 0x0d,
762 0xe3, 0x03, 0x15, 0xeb, 0x03, 0x15, 0xf3, 0x03, 0x15, 0xfb, 0x03, 0x15,
763 0x83, 0x04, 0x15, 0x8b, 0x04, 0x04, 0x93, 0x04, 0x0e, 0x9b, 0x04, 0x0d,
764 0xa3, 0x04, 0x04, 0xab, 0x04, 0x04, 0xb3, 0x04, 0x04, 0xbb, 0x04, 0x0d,
765 0xc3, 0x04, 0x04, 0xcb, 0x04, 0x04, 0xd3, 0x04, 0x04, 0xdb, 0x04, 0x04,
766 0xe3, 0x04, 0x0e, 0xeb, 0x04, 0x07, 0xf3, 0x04, 0x07, 0xfb, 0x04, 0x62,
767 0x83, 0x05, 0x04, 0x8b, 0x05, 0x07, 0x93, 0x05, 0x11, 0x9b, 0x05, 0x0d,
768 0xa3, 0x05, 0x62, 0xab, 0x05, 0x0e, 0xb3, 0x05, 0x04, 0xbb, 0x05, 0x1b,
769 0xc3, 0x05, 0x04, 0xcb, 0x05, 0x15, 0xd3, 0x05, 0x15, 0xdb, 0x05, 0x11,
770 0xe3, 0x05, 0x0e, 0xeb, 0x05, 0x0e, 0xf3, 0x05, 0x1f, 0xfb, 0x05, 0x04,
771 0x83, 0x06, 0x15, 0x8b, 0x06, 0x0d, 0x93, 0x06, 0x0d, 0x9b, 0x06, 0x0d,
772 0xa3, 0x06, 0x3c, 0xab, 0x06, 0x3c, 0xb3, 0x06, 0x3c, 0xbb, 0x06, 0x3c,
773 0xc3, 0x06, 0x07, 0xcb, 0x06, 0x07, 0xd3, 0x06, 0x07, 0xdb, 0x06, 0x15,
774 0xe3, 0x06, 0x04, 0xeb, 0x06, 0x0e, 0xf3, 0x06, 0x07, 0xfb, 0x06, 0x04,
775 0x83, 0x07, 0x04, 0x8b, 0x07, 0x04, 0x93, 0x07, 0x0d, 0x9b, 0x07, 0x0d,
776 0xa3, 0x07, 0x0d, 0xab, 0x07, 0x0d, 0xb3, 0x07, 0x0d, 0xbb, 0x07, 0x0d,
777 0xc3, 0x07, 0x3c, 0xcb, 0x07, 0x04, 0xd3, 0x07, 0x0d, 0xdb, 0x07, 0x15,
778 0xe3, 0x07, 0x3c, 0xeb, 0x07, 0x3c, 0xf3, 0x07, 0x1b, 0x83, 0x08, 0x1b,
779 0x8b, 0x08, 0x3c, 0x93, 0x08, 0x0d, 0x9b, 0x08, 0x0d, 0xa3, 0x08, 0x04,
780 0xab, 0x08, 0x0e, 0xb3, 0x08, 0x07, 0xbb, 0x08, 0x57, 0xc3, 0x08, 0x07,
781 0xcb, 0x08, 0x04, 0xd3, 0x08, 0x07, 0xdb, 0x08, 0x11, 0xe3, 0x08, 0x1b,
782 0xeb, 0x08, 0x34, 0xf3, 0x08, 0x1f, 0xfb, 0x08, 0x0d, 0x83, 0x09, 0x0d,
783 0x8b, 0x09, 0x3c, 0x93, 0x09, 0x04, 0x9b, 0x09, 0x0e, 0xa3, 0x09, 0x04,
784 0xab, 0x09, 0x3c, 0xb3, 0x09, 0x04, 0xbb, 0x09, 0x3c, 0xc3, 0x09, 0x3c,
785 0xcb, 0x09, 0x04, 0xd3, 0x09, 0x1b, 0xdb, 0x09, 0x07, 0xe3, 0x09, 0x0d,
786 0xeb, 0x09, 0x04, 0xf3, 0x09, 0x04, 0xfb, 0x09, 0x04, 0x83, 0x0a, 0x04,
787 0x8b, 0x0a, 0x1b, 0x93, 0x0a, 0x1f, 0x9b, 0x0a, 0x11, 0xa3, 0x0a, 0x07,
788 0xab, 0x0a, 0x07, 0xb3, 0x0a, 0x0d, 0xbb, 0x0a, 0x11, 0xc3, 0x0a, 0x0d,
789 0xcb, 0x0a, 0x0d, 0xd3, 0x0a, 0x1b, 0xdb, 0x0a, 0x04, 0xe3, 0x0a, 0x1b,
790 0xeb, 0x0a, 0x0d, 0xf3, 0x0a, 0x3c, 0xfb, 0x0a, 0x0d, 0x83, 0x0b, 0x1b,
791 0x8b, 0x0b, 0x0d, 0x93, 0x0b, 0x3c, 0x9b, 0x0b, 0x3c, 0xa3, 0x0b, 0x3c,
792 0xab, 0x0b, 0x07, 0xb3, 0x0b, 0x0d, 0xbb, 0x0b, 0x11, 0xc3, 0x0b, 0x07,
793 0xcb, 0x0b, 0x0d, 0xd3, 0x0b, 0x0d, 0xdb, 0x0b, 0x04, 0xe3, 0x0b, 0x0d,
794 0xeb, 0x0b, 0x0d, 0xf3, 0x0b, 0x0e, 0xfb, 0x0b, 0x0e, 0x83, 0x0c, 0x04,
795 0x8b, 0x0c, 0x0e, 0x93, 0x0c, 0x0e, 0x9b, 0x0c, 0x0e, 0xa3, 0x0c, 0x0d,
796 0xab, 0x0c, 0x0d, 0xb3, 0x0c, 0x04, 0xbb, 0x0c, 0x07, 0xc3, 0x0c, 0x63,
797 0xcb, 0x0c, 0x0d, 0xd3, 0x0c, 0x0d, 0xdb, 0x0c, 0x1f, 0xe3, 0x0c, 0x3c,
798 0xeb, 0x0c, 0x0d, 0xf3, 0x0c, 0x0e, 0xfb, 0x0c, 0x04, 0x83, 0x0d, 0x04,
799 0x8b, 0x0d, 0x11, 0x93, 0x0d, 0x1f, 0x9b, 0x0d, 0x04, 0xa3, 0x0d, 0x0e,
800 0xab, 0x0d, 0x0d, 0xb3, 0x0d, 0x0d, 0xbb, 0x0d, 0x04, 0xc3, 0x0d, 0x04,
801 0xcb, 0x0d, 0x07, 0xd3, 0x0d, 0x04, 0xdb, 0x0d, 0x0d, 0xb3, 0x0e, 0x0d,
802 0xbb, 0x0e, 0x04, 0xc3, 0x0e, 0x1f, 0xcb, 0x0e, 0x1b, 0xd3, 0x0e, 0x0d,
803 0xdb, 0x0e, 0x07, 0xe3, 0x0e, 0x07, 0xeb, 0x0e, 0x04, 0xf3, 0x0e, 0x07,
804 0xfb, 0x0e, 0x07, 0x83, 0x0f, 0x04, 0x8b, 0x0f, 0x0e, 0x93, 0x0f, 0x04,
805 0x9b, 0x0f, 0x0d, 0xa3, 0x0f, 0x11, 0xab, 0x0f, 0x11, 0xb3, 0x0f, 0x3c,
806 0xbb, 0x0f, 0x1f, 0xc3, 0x0f, 0x11, 0xcb, 0x0f, 0x04, 0xd3, 0x0f, 0x04,
807 0xdb, 0x0f, 0x0d, 0xe3, 0x0f, 0x04, 0xeb, 0x0f, 0x3c, 0xf3, 0x0f, 0x0d,
808 0xfb, 0x0f, 0x11, 0x83, 0x10, 0x0d, 0x8b, 0x10, 0x04, 0x93, 0x10, 0x11,
809 0x9b, 0x10, 0x0d, 0xa3, 0x10, 0x04, 0xab, 0x10, 0x0d, 0xb3, 0x10, 0x0d,
810 0xbb, 0x10, 0x04, 0xc3, 0x10, 0x07, 0xcb, 0x10, 0x07, 0xd3, 0x10, 0x04,
811 0xdb, 0x10, 0x0d, 0xe3, 0x10, 0x0d, 0xeb, 0x10, 0x04, 0xf3, 0x10, 0x3c,
812 0xfb, 0x10, 0x0d, 0x83, 0x11, 0x04, 0x8b, 0x11, 0x0d, 0x93, 0x11, 0x0e,
813 0x9b, 0x11, 0x0e, 0xa3, 0x11, 0x0e, 0xab, 0x11, 0x0e, 0xb3, 0x11, 0x0e,
814 0xbb, 0x11, 0x0e, 0xc3, 0x11, 0x15, 0xcb, 0x11, 0x07, 0xd3, 0x11, 0x0d,
815 0xdb, 0x11, 0x0d, 0xe3, 0x11, 0x0d, 0xeb, 0x11, 0x3c, 0xf3, 0x11, 0x3c,
816 0xfb, 0x11, 0x0d, 0x83, 0x12, 0x15, 0x8b, 0x12, 0x07, 0x93, 0x12, 0x07,
817 0x9b, 0x12, 0x15, 0xa3, 0x12, 0x04, 0xab, 0x12, 0x04, 0xb3, 0x12, 0x07,
818 0xbb, 0x12, 0x07, 0xc3, 0x12, 0x0e, 0xcb, 0x12, 0x0e, 0xd3, 0x12, 0x0e,
819 0xdb, 0x12, 0x0d, 0xe3, 0x12, 0x3c, 0xeb, 0x12, 0x0d, 0xf3, 0x12, 0x3c,
820 0xfb, 0x12, 0x0e, 0x83, 0x13, 0x15, 0x8b, 0x13, 0x15, 0x93, 0x13, 0x15,
821 0x9b, 0x13, 0x0d, 0xa3, 0x13, 0x1b, 0xab, 0x13, 0x07, 0xb3, 0x13, 0x04,
822 0xbb, 0x13, 0x04, 0xc3, 0x13, 0x07, 0xcb, 0x13, 0x07, 0xd3, 0x13, 0x04,
823 0xdb, 0x13, 0x04, 0xe3, 0x13, 0x07, 0xeb, 0x13, 0x07, 0xf3, 0x13, 0x07,
824 0xfb, 0x13, 0x07, 0x83, 0x14, 0x15, 0x8b, 0x14, 0x15, 0x93, 0x14, 0x0e,
825 0x9b, 0x14, 0x04, 0xa3, 0x14, 0x04, 0xab, 0x14, 0x3c, 0xb3, 0x14, 0x04,
826 0xbb, 0x14, 0x64, 0xc3, 0x14, 0x07, 0xcb, 0x14, 0x15, 0xd3, 0x14, 0x0e,
827 0xdb, 0x14, 0x07, 0xe3, 0x14, 0x0e, 0xeb, 0x14, 0x0d, 0xf3, 0x14, 0x15,
828 0xfb, 0x14, 0x04, 0x83, 0x15, 0x0e, 0x8b, 0x15, 0x0e, 0x93, 0x15, 0x04,
829 0x9b, 0x15, 0x66, 0xa3, 0x15, 0x04, 0xab, 0x15, 0x07, 0xb3, 0x15, 0x0e,
830 0xbb, 0x15, 0x07, 0xc3, 0x15, 0x07, 0xcb, 0x15, 0x07, 0xd3, 0x15, 0x07,
831 0xdb, 0x15, 0x04, 0xe3, 0x15, 0x3c, 0xeb, 0x15, 0x67, 0xf3, 0x15, 0x07,
832 0xfb, 0x15, 0x04, 0x83, 0x16, 0x07, 0x8b, 0x16, 0x07, 0x93, 0x16, 0x04,
833 0x9b, 0x16, 0x11, 0xa3, 0x16, 0x68, 0xab, 0x16, 0x3c, 0xb3, 0x16, 0x07,
834 0x00, 0x0a, 0x10, 0x00, 0x0a, 0x14, 0x00, 0x09, 0x13, 0x65, 0x00, 0x09,
835 0x1a, 0x03, 0x00, 0x00, 0x09, 0x22, 0x03, 0x00, 0x0a, 0x0c, 0x00, 0x0b,
836 0x6a, 0x00, 0x0b, 0x6b, 0x00, 0x0a, 0x03, 0x23, 0x6c, 0x2b, 0x6e, 0x3b,
837 0x6d, 0x52, 0x02, 0x00, 0x09, 0x13, 0x6d, 0x1b, 0x6c, 0x23, 0x6e, 0x33,
838 0x6d, 0x43, 0x6f, 0x4b, 0x0e, 0x51, 0x00, 0x0a, 0x07, 0x49, 0x00, 0x09,
839 0x13, 0x0e, 0x29, 0x00, 0x09, 0x13, 0x66, 0x00, 0x0a, 0x04, 0x2b, 0x71,
840 0x00, 0x09, 0x13, 0x71, 0x1a, 0x04, 0x00, 0x0b, 0x0e, 0x13, 0x0e, 0x1b,
841 0x0e, 0x23, 0x07, 0x2b, 0x0e, 0x33, 0x07, 0x3b, 0x0e, 0x83, 0x01, 0x0e,
842 0x8b, 0x01, 0x0e, 0x93, 0x01, 0x0e, 0x9b, 0x01, 0x11, 0xa3, 0x01, 0x0e,
843 0xab, 0x01, 0x07, 0xb3, 0x01, 0x0e, 0xbb, 0x01, 0x04, 0xc3, 0x01, 0x07,
844 0xcb, 0x01, 0x0e, 0xd3, 0x01, 0x0e, 0x00, 0x5b, 0x74, 0x63, 0x75, 0xd1,
845 0x03, 0x00, 0x59, 0xf9, 0x01, 0xe9, 0x02, 0x00, 0x0b, 0x2d, 0x00, 0x89,
846 0x8c, 0xb0, 0x80, 0x08};
847
848 MessageFilter filt;
849 ASSERT_TRUE(
850 filt.LoadFilterBytecode(kFilterBytecode, sizeof(kFilterBytecode)));
851
852 // Pass the trace in input splitting it in slices of arbitrary size.
853 std::vector<MessageFilter::InputSlice> input_slices;
854 for (size_t i = 0; i < sizeof(kTraceData);) {
855 std::minstd_rand0 rnd_engine(0);
856 size_t slice_size = rnd_engine() % 4096;
857 slice_size = std::min(slice_size, sizeof(kTraceData) - i);
858 input_slices.emplace_back(
859 MessageFilter::InputSlice{kTraceData + i, slice_size});
860 i += slice_size;
861 }
862
863 auto filtered_data =
864 filt.FilterMessageFragments(input_slices.data(), input_slices.size());
865
866 EXPECT_GT(filtered_data.size, 0u);
867 EXPECT_LE(filtered_data.size, sizeof(kTraceData));
868
869 perfetto::protos::Trace original_trace;
870 ASSERT_TRUE(original_trace.ParseFromArray(kTraceData, sizeof(kTraceData)));
871
872 perfetto::protos::Trace filtered_trace;
873 ASSERT_TRUE(filtered_trace.ParseFromArray(
874 filtered_data.data.get(), static_cast<int>(filtered_data.size)));
875
876 // Check that the re-serialized traces are identical.
877 std::string original_ser = original_trace.SerializeAsString();
878 std::string filter_ser = filtered_trace.SerializeAsString();
879
880 EXPECT_EQ(filtered_trace.packet_size(), original_trace.packet_size());
881
882 // Don't use EXPECT_EQ, the string is too big. If this check fails, the gtest
883 // diffing algorithm will take several minutes to compute the diff.
884 // That would mistakenly look like a CI or timing-related issue as the gtest
885 // would fail due to timeout.
886 // If this check fails, use base::HexDump() to investigate.
887 EXPECT_TRUE(original_ser == filter_ser);
888 }
889
890 } // namespace
891 } // namespace protozero
892