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shaka-packager/packager/third_party/protobuf/objectivec/Tests/GPBCodedInputStreamTests.m

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Objective-C
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// Protocol Buffers - Google's data interchange format
// Copyright 2008 Google Inc. All rights reserved.
// https://developers.google.com/protocol-buffers/
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#import "GPBTestUtilities.h"
#import "GPBCodedInputStream.h"
#import "GPBCodedOutputStream.h"
#import "GPBUnknownFieldSet_PackagePrivate.h"
#import "GPBUtilities_PackagePrivate.h"
#import "google/protobuf/Unittest.pbobjc.h"
@interface CodedInputStreamTests : GPBTestCase
@end
@implementation CodedInputStreamTests
- (NSData*)bytes_with_sentinel:(int32_t)unused, ... {
va_list list;
va_start(list, unused);
NSMutableData* values = [NSMutableData dataWithCapacity:0];
int32_t i;
while ((i = va_arg(list, int32_t)) != 256) {
NSAssert(i >= 0 && i < 256, @"");
uint8_t u = (uint8_t)i;
[values appendBytes:&u length:1];
}
va_end(list);
return values;
}
#define bytes(...) [self bytes_with_sentinel:0, __VA_ARGS__, 256]
- (void)testDecodeZigZag {
XCTAssertEqual(0, GPBDecodeZigZag32(0));
XCTAssertEqual(-1, GPBDecodeZigZag32(1));
XCTAssertEqual(1, GPBDecodeZigZag32(2));
XCTAssertEqual(-2, GPBDecodeZigZag32(3));
XCTAssertEqual((int32_t)0x3FFFFFFF, GPBDecodeZigZag32(0x7FFFFFFE));
XCTAssertEqual((int32_t)0xC0000000, GPBDecodeZigZag32(0x7FFFFFFF));
XCTAssertEqual((int32_t)0x7FFFFFFF, GPBDecodeZigZag32(0xFFFFFFFE));
XCTAssertEqual((int32_t)0x80000000, GPBDecodeZigZag32(0xFFFFFFFF));
XCTAssertEqual((int64_t)0, GPBDecodeZigZag64(0));
XCTAssertEqual((int64_t)-1, GPBDecodeZigZag64(1));
XCTAssertEqual((int64_t)1, GPBDecodeZigZag64(2));
XCTAssertEqual((int64_t)-2, GPBDecodeZigZag64(3));
XCTAssertEqual((int64_t)0x000000003FFFFFFFL,
GPBDecodeZigZag64(0x000000007FFFFFFEL));
XCTAssertEqual((int64_t)0xFFFFFFFFC0000000L,
GPBDecodeZigZag64(0x000000007FFFFFFFL));
XCTAssertEqual((int64_t)0x000000007FFFFFFFL,
GPBDecodeZigZag64(0x00000000FFFFFFFEL));
XCTAssertEqual((int64_t)0xFFFFFFFF80000000L,
GPBDecodeZigZag64(0x00000000FFFFFFFFL));
XCTAssertEqual((int64_t)0x7FFFFFFFFFFFFFFFL,
GPBDecodeZigZag64(0xFFFFFFFFFFFFFFFEL));
XCTAssertEqual((int64_t)0x8000000000000000L,
GPBDecodeZigZag64(0xFFFFFFFFFFFFFFFFL));
}
- (void)assertReadVarint:(NSData*)data value:(int64_t)value {
{
GPBCodedInputStream* input = [GPBCodedInputStream streamWithData:data];
XCTAssertEqual((int32_t)value, [input readInt32]);
}
{
GPBCodedInputStream* input = [GPBCodedInputStream streamWithData:data];
XCTAssertEqual(value, [input readInt64]);
}
}
- (void)assertReadLittleEndian32:(NSData*)data value:(int32_t)value {
GPBCodedInputStream* input = [GPBCodedInputStream streamWithData:data];
XCTAssertEqual(value, [input readSFixed32]);
}
- (void)assertReadLittleEndian64:(NSData*)data value:(int64_t)value {
GPBCodedInputStream* input = [GPBCodedInputStream streamWithData:data];
XCTAssertEqual(value, [input readSFixed64]);
}
- (void)assertReadVarintFailure:(NSData*)data {
{
GPBCodedInputStream* input = [GPBCodedInputStream streamWithData:data];
XCTAssertThrows([input readInt32]);
}
{
GPBCodedInputStream* input = [GPBCodedInputStream streamWithData:data];
XCTAssertThrows([input readInt64]);
}
}
- (void)testBytes {
NSData* data = bytes(0xa2, 0x74);
XCTAssertEqual(data.length, (NSUInteger)2);
XCTAssertEqual(((uint8_t*)data.bytes)[0], (uint8_t)0xa2);
XCTAssertEqual(((uint8_t*)data.bytes)[1], (uint8_t)0x74);
}
- (void)testReadVarint {
[self assertReadVarint:bytes(0x00) value:0];
[self assertReadVarint:bytes(0x01) value:1];
[self assertReadVarint:bytes(0x7f) value:127];
// 14882
[self assertReadVarint:bytes(0xa2, 0x74) value:(0x22 << 0) | (0x74 << 7)];
// 2961488830
[self assertReadVarint:bytes(0xbe, 0xf7, 0x92, 0x84, 0x0b)
value:(0x3e << 0) | (0x77 << 7) | (0x12 << 14) |
(0x04 << 21) | (0x0bLL << 28)];
// 64-bit
// 7256456126
[self assertReadVarint:bytes(0xbe, 0xf7, 0x92, 0x84, 0x1b)
value:(0x3e << 0) | (0x77 << 7) | (0x12 << 14) |
(0x04 << 21) | (0x1bLL << 28)];
// 41256202580718336
[self assertReadVarint:bytes(0x80, 0xe6, 0xeb, 0x9c, 0xc3, 0xc9, 0xa4, 0x49)
value:(0x00 << 0) | (0x66 << 7) | (0x6b << 14) |
(0x1c << 21) | (0x43LL << 28) | (0x49LL << 35) |
(0x24LL << 42) | (0x49LL << 49)];
// 11964378330978735131
[self
assertReadVarint:bytes(0x9b, 0xa8, 0xf9, 0xc2, 0xbb, 0xd6, 0x80, 0x85,
0xa6, 0x01)
value:(0x1b << 0) | (0x28 << 7) | (0x79 << 14) | (0x42 << 21) |
(0x3bLL << 28) | (0x56LL << 35) | (0x00LL << 42) |
(0x05LL << 49) | (0x26LL << 56) | (0x01LL << 63)];
// Failures
[self assertReadVarintFailure:bytes(0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80,
0x80, 0x80, 0x80, 0x00)];
[self assertReadVarintFailure:bytes(0x80)];
}
- (void)testReadLittleEndian {
[self assertReadLittleEndian32:bytes(0x78, 0x56, 0x34, 0x12)
value:0x12345678];
[self assertReadLittleEndian32:bytes(0xf0, 0xde, 0xbc, 0x9a)
value:0x9abcdef0];
[self assertReadLittleEndian64:bytes(0xf0, 0xde, 0xbc, 0x9a, 0x78, 0x56, 0x34,
0x12)
value:0x123456789abcdef0LL];
[self assertReadLittleEndian64:bytes(0x78, 0x56, 0x34, 0x12, 0xf0, 0xde, 0xbc,
0x9a)
value:0x9abcdef012345678LL];
}
- (void)testReadWholeMessage {
TestAllTypes* message = [self allSetRepeatedCount:kGPBDefaultRepeatCount];
NSData* rawBytes = message.data;
XCTAssertEqual(message.serializedSize, (size_t)rawBytes.length);
TestAllTypes* message2 =
[TestAllTypes parseFromData:rawBytes extensionRegistry:nil error:NULL];
[self assertAllFieldsSet:message2 repeatedCount:kGPBDefaultRepeatCount];
}
- (void)testSkipWholeMessage {
TestAllTypes* message = [self allSetRepeatedCount:kGPBDefaultRepeatCount];
NSData* rawBytes = message.data;
// Create two parallel inputs. Parse one as unknown fields while using
// skipField() to skip each field on the other. Expect the same tags.
GPBCodedInputStream* input1 = [GPBCodedInputStream streamWithData:rawBytes];
GPBCodedInputStream* input2 = [GPBCodedInputStream streamWithData:rawBytes];
GPBUnknownFieldSet* unknownFields =
[[[GPBUnknownFieldSet alloc] init] autorelease];
while (YES) {
int32_t tag = [input1 readTag];
XCTAssertEqual(tag, [input2 readTag]);
if (tag == 0) {
break;
}
[unknownFields mergeFieldFrom:tag input:input1];
[input2 skipField:tag];
}
}
- (void)testReadHugeBlob {
// Allocate and initialize a 1MB blob.
NSMutableData* blob = [NSMutableData dataWithLength:1 << 20];
for (NSUInteger i = 0; i < blob.length; i++) {
((uint8_t*)blob.mutableBytes)[i] = (uint8_t)i;
}
// Make a message containing it.
TestAllTypes* message = [TestAllTypes message];
[self setAllFields:message repeatedCount:kGPBDefaultRepeatCount];
[message setOptionalBytes:blob];
// Serialize and parse it. Make sure to parse from an InputStream, not
// directly from a ByteString, so that CodedInputStream uses buffered
// reading.
NSData *messageData = message.data;
XCTAssertNotNil(messageData);
GPBCodedInputStream* stream =
[GPBCodedInputStream streamWithData:messageData];
TestAllTypes* message2 = [TestAllTypes parseFromCodedInputStream:stream
extensionRegistry:nil
error:NULL];
XCTAssertEqualObjects(message.optionalBytes, message2.optionalBytes);
// Make sure all the other fields were parsed correctly.
TestAllTypes* message3 = [[message2 copy] autorelease];
TestAllTypes* types = [self allSetRepeatedCount:kGPBDefaultRepeatCount];
NSData* data = [types optionalBytes];
[message3 setOptionalBytes:data];
[self assertAllFieldsSet:message3 repeatedCount:kGPBDefaultRepeatCount];
}
- (void)testReadMaliciouslyLargeBlob {
NSOutputStream* rawOutput = [NSOutputStream outputStreamToMemory];
GPBCodedOutputStream* output =
[GPBCodedOutputStream streamWithOutputStream:rawOutput];
int32_t tag = GPBWireFormatMakeTag(1, GPBWireFormatLengthDelimited);
[output writeRawVarint32:tag];
[output writeRawVarint32:0x7FFFFFFF];
uint8_t bytes[32] = {0};
[output writeRawData:[NSData dataWithBytes:bytes length:32]];
[output flush];
NSData* data =
[rawOutput propertyForKey:NSStreamDataWrittenToMemoryStreamKey];
GPBCodedInputStream* input =
[GPBCodedInputStream streamWithData:[NSMutableData dataWithData:data]];
XCTAssertEqual(tag, [input readTag]);
XCTAssertThrows([input readBytes]);
}
// Verifies fix for b/10315336.
// Note: Now that there isn't a custom string class under the hood, this test
// isn't as critical, but it does cover bad input and if a custom class is added
// again, it will help validate that class' handing of bad utf8.
- (void)testReadMalformedString {
NSOutputStream* rawOutput = [NSOutputStream outputStreamToMemory];
GPBCodedOutputStream* output =
[GPBCodedOutputStream streamWithOutputStream:rawOutput];
int32_t tag = GPBWireFormatMakeTag(TestAllTypes_FieldNumber_DefaultString,
GPBWireFormatLengthDelimited);
[output writeRawVarint32:tag];
[output writeRawVarint32:5];
// Create an invalid utf-8 byte array.
uint8_t bytes[] = {0xc2, 0xf2, 0x0, 0x0, 0x0};
[output writeRawData:[NSData dataWithBytes:bytes length:sizeof(bytes)]];
[output flush];
NSData *data =
[rawOutput propertyForKey:NSStreamDataWrittenToMemoryStreamKey];
GPBCodedInputStream* input = [GPBCodedInputStream streamWithData:data];
NSError *error = nil;
TestAllTypes* message = [TestAllTypes parseFromCodedInputStream:input
extensionRegistry:nil
error:&error];
XCTAssertNotNil(error);
XCTAssertNil(message);
}
- (void)testBOMWithinStrings {
// We've seen servers that end up with BOMs within strings (not always at the
// start, and sometimes in multiple places), make sure they always parse
// correctly. (Again, this is inpart incase a custom string class is ever
// used again.)
const char* strs[] = {
"\xEF\xBB\xBF String with BOM",
"String with \xEF\xBB\xBF in middle",
"String with end bom \xEF\xBB\xBF",
"\xEF\xBB\xBF\xe2\x99\xa1", // BOM White Heart
"\xEF\xBB\xBF\xEF\xBB\xBF String with Two BOM",
};
for (size_t i = 0; i < GPBARRAYSIZE(strs); ++i) {
NSOutputStream* rawOutput = [NSOutputStream outputStreamToMemory];
GPBCodedOutputStream* output =
[GPBCodedOutputStream streamWithOutputStream:rawOutput];
int32_t tag = GPBWireFormatMakeTag(TestAllTypes_FieldNumber_DefaultString,
GPBWireFormatLengthDelimited);
[output writeRawVarint32:tag];
size_t length = strlen(strs[i]);
[output writeRawVarint32:(int32_t)length];
[output writeRawData:[NSData dataWithBytes:strs[i] length:length]];
[output flush];
NSData* data =
[rawOutput propertyForKey:NSStreamDataWrittenToMemoryStreamKey];
GPBCodedInputStream* input = [GPBCodedInputStream streamWithData:data];
TestAllTypes* message = [TestAllTypes parseFromCodedInputStream:input
extensionRegistry:nil
error:NULL];
XCTAssertNotNil(message, @"Loop %zd", i);
// Ensure the string is there. NSString can consume the BOM in some
// cases, so don't actually check the string for exact equality.
XCTAssertTrue(message.defaultString.length > 0, @"Loop %zd", i);
}
}
@end
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