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      1 // Protocol Buffers - Google's data interchange format
      2 // Copyright 2015 Google Inc.  All rights reserved.
      3 // https://developers.google.com/protocol-buffers/
      4 //
      5 // Redistribution and use in source and binary forms, with or without
      6 // modification, are permitted provided that the following conditions are
      7 // met:
      8 //
      9 //     * Redistributions of source code must retain the above copyright
     10 // notice, this list of conditions and the following disclaimer.
     11 //     * Redistributions in binary form must reproduce the above
     12 // copyright notice, this list of conditions and the following disclaimer
     13 // in the documentation and/or other materials provided with the
     14 // distribution.
     15 //     * Neither the name of Google Inc. nor the names of its
     16 // contributors may be used to endorse or promote products derived from
     17 // this software without specific prior written permission.
     18 //
     19 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     20 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     21 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     22 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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     25 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     26 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     27 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     28 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     29 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     30 
     31 #import <Foundation/Foundation.h>
     32 
     33 #import "Conformance.pbobjc.h"
     34 
     35 static void Die(NSString *format, ...) __dead2;
     36 
     37 static BOOL verbose = NO;
     38 static int32_t testCount = 0;
     39 
     40 static void Die(NSString *format, ...) {
     41   va_list args;
     42   va_start(args, format);
     43   NSString *msg = [[NSString alloc] initWithFormat:format arguments:args];
     44   NSLog(@"%@", msg);
     45   va_end(args);
     46   [msg release];
     47   exit(66);
     48 }
     49 
     50 static NSData *CheckedReadDataOfLength(NSFileHandle *handle, NSUInteger numBytes) {
     51   NSData *data = [handle readDataOfLength:numBytes];
     52   NSUInteger dataLen = data.length;
     53   if (dataLen == 0) {
     54     return nil;  // EOF.
     55   }
     56   if (dataLen != numBytes) {
     57     Die(@"Failed to read the request length (%d), only got: %@",
     58         numBytes, data);
     59   }
     60   return data;
     61 }
     62 
     63 static ConformanceResponse *DoTest(ConformanceRequest *request) {
     64   ConformanceResponse *response = [ConformanceResponse message];
     65   TestAllTypes *testMessage = nil;
     66 
     67   switch (request.payloadOneOfCase) {
     68     case ConformanceRequest_Payload_OneOfCase_GPBUnsetOneOfCase:
     69       Die(@"Request didn't have a payload: %@", request);
     70       break;
     71 
     72     case ConformanceRequest_Payload_OneOfCase_ProtobufPayload: {
     73       NSError *error = nil;
     74       testMessage = [TestAllTypes parseFromData:request.protobufPayload
     75                                           error:&error];
     76       if (!testMessage) {
     77         response.parseError =
     78             [NSString stringWithFormat:@"Parse error: %@", error];
     79       }
     80       break;
     81     }
     82 
     83     case ConformanceRequest_Payload_OneOfCase_JsonPayload:
     84       response.skipped = @"ObjC doesn't support parsing JSON";
     85       break;
     86   }
     87 
     88   if (testMessage) {
     89     switch (request.requestedOutputFormat) {
     90       case WireFormat_GPBUnrecognizedEnumeratorValue:
     91       case WireFormat_Unspecified:
     92         Die(@"Unrecognized/unspecified output format: %@", request);
     93         break;
     94 
     95       case WireFormat_Protobuf:
     96         response.protobufPayload = testMessage.data;
     97         if (!response.protobufPayload) {
     98           response.serializeError =
     99             [NSString stringWithFormat:@"Failed to make data from: %@", testMessage];
    100         }
    101         break;
    102 
    103       case WireFormat_Json:
    104         response.skipped = @"ObjC doesn't support generating JSON";
    105         break;
    106     }
    107   }
    108 
    109   return response;
    110 }
    111 
    112 static uint32_t UInt32FromLittleEndianData(NSData *data) {
    113   if (data.length != sizeof(uint32_t)) {
    114     Die(@"Data not the right size for uint32_t: %@", data);
    115   }
    116   uint32_t value;
    117   memcpy(&value, data.bytes, sizeof(uint32_t));
    118   return CFSwapInt32LittleToHost(value);
    119 }
    120 
    121 static NSData *UInt32ToLittleEndianData(uint32_t num) {
    122   uint32_t value = CFSwapInt32HostToLittle(num);
    123   return [NSData dataWithBytes:&value length:sizeof(uint32_t)];
    124 }
    125 
    126 static BOOL DoTestIo(NSFileHandle *input, NSFileHandle *output) {
    127   // See conformance_test_runner.cc for the wire format.
    128   NSData *data = CheckedReadDataOfLength(input, sizeof(uint32_t));
    129   if (!data) {
    130     // EOF.
    131     return NO;
    132   }
    133   uint32_t numBytes = UInt32FromLittleEndianData(data);
    134   data = CheckedReadDataOfLength(input, numBytes);
    135   if (!data) {
    136     Die(@"Failed to read request");
    137   }
    138 
    139   NSError *error = nil;
    140   ConformanceRequest *request = [ConformanceRequest parseFromData:data
    141                                                             error:&error];
    142   if (!request) {
    143     Die(@"Failed to parse the message data: %@", error);
    144   }
    145 
    146   ConformanceResponse *response = DoTest(request);
    147   if (!response) {
    148     Die(@"Failed to make a reply from %@", request);
    149   }
    150 
    151   data = response.data;
    152   [output writeData:UInt32ToLittleEndianData((int32_t)data.length)];
    153   [output writeData:data];
    154 
    155   if (verbose) {
    156     NSLog(@"Request: %@", request);
    157     NSLog(@"Response: %@", response);
    158   }
    159 
    160   ++testCount;
    161   return YES;
    162 }
    163 
    164 int main(int argc, const char *argv[]) {
    165   @autoreleasepool {
    166     NSFileHandle *input = [[NSFileHandle fileHandleWithStandardInput] retain];
    167     NSFileHandle *output = [[NSFileHandle fileHandleWithStandardOutput] retain];
    168 
    169     BOOL notDone = YES;
    170     while (notDone) {
    171       @autoreleasepool {
    172         notDone = DoTestIo(input, output);
    173       }
    174     }
    175 
    176     NSLog(@"Received EOF from test runner after %d tests, exiting.", testCount);
    177   }
    178   return 0;
    179 }
    180