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      1 // Copyright 2014 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #include "mojo/public/cpp/bindings/lib/validation_errors.h"
      6 
      7 #include "base/strings/stringprintf.h"
      8 #include "mojo/public/cpp/bindings/message.h"
      9 
     10 namespace mojo {
     11 namespace internal {
     12 namespace {
     13 
     14 ValidationErrorObserverForTesting* g_validation_error_observer = nullptr;
     15 SerializationWarningObserverForTesting* g_serialization_warning_observer =
     16     nullptr;
     17 
     18 }  // namespace
     19 
     20 const char* ValidationErrorToString(ValidationError error) {
     21   switch (error) {
     22     case VALIDATION_ERROR_NONE:
     23       return "VALIDATION_ERROR_NONE";
     24     case VALIDATION_ERROR_MISALIGNED_OBJECT:
     25       return "VALIDATION_ERROR_MISALIGNED_OBJECT";
     26     case VALIDATION_ERROR_ILLEGAL_MEMORY_RANGE:
     27       return "VALIDATION_ERROR_ILLEGAL_MEMORY_RANGE";
     28     case VALIDATION_ERROR_UNEXPECTED_STRUCT_HEADER:
     29       return "VALIDATION_ERROR_UNEXPECTED_STRUCT_HEADER";
     30     case VALIDATION_ERROR_UNEXPECTED_ARRAY_HEADER:
     31       return "VALIDATION_ERROR_UNEXPECTED_ARRAY_HEADER";
     32     case VALIDATION_ERROR_ILLEGAL_HANDLE:
     33       return "VALIDATION_ERROR_ILLEGAL_HANDLE";
     34     case VALIDATION_ERROR_UNEXPECTED_INVALID_HANDLE:
     35       return "VALIDATION_ERROR_UNEXPECTED_INVALID_HANDLE";
     36     case VALIDATION_ERROR_ILLEGAL_POINTER:
     37       return "VALIDATION_ERROR_ILLEGAL_POINTER";
     38     case VALIDATION_ERROR_UNEXPECTED_NULL_POINTER:
     39       return "VALIDATION_ERROR_UNEXPECTED_NULL_POINTER";
     40     case VALIDATION_ERROR_ILLEGAL_INTERFACE_ID:
     41       return "VALIDATION_ERROR_ILLEGAL_INTERFACE_ID";
     42     case VALIDATION_ERROR_UNEXPECTED_INVALID_INTERFACE_ID:
     43       return "VALIDATION_ERROR_UNEXPECTED_INVALID_INTERFACE_ID";
     44     case VALIDATION_ERROR_MESSAGE_HEADER_INVALID_FLAGS:
     45       return "VALIDATION_ERROR_MESSAGE_HEADER_INVALID_FLAGS";
     46     case VALIDATION_ERROR_MESSAGE_HEADER_MISSING_REQUEST_ID:
     47       return "VALIDATION_ERROR_MESSAGE_HEADER_MISSING_REQUEST_ID";
     48     case VALIDATION_ERROR_MESSAGE_HEADER_UNKNOWN_METHOD:
     49       return "VALIDATION_ERROR_MESSAGE_HEADER_UNKNOWN_METHOD";
     50     case VALIDATION_ERROR_DIFFERENT_SIZED_ARRAYS_IN_MAP:
     51       return "VALIDATION_ERROR_DIFFERENT_SIZED_ARRAYS_IN_MAP";
     52     case VALIDATION_ERROR_UNKNOWN_UNION_TAG:
     53       return "VALIDATION_ERROR_UNKNOWN_UNION_TAG";
     54     case VALIDATION_ERROR_UNKNOWN_ENUM_VALUE:
     55       return "VALIDATION_ERROR_UNKNOWN_ENUM_VALUE";
     56     case VALIDATION_ERROR_DESERIALIZATION_FAILED:
     57       return "VALIDATION_ERROR_DESERIALIZATION_FAILED";
     58   }
     59 
     60   return "Unknown error";
     61 }
     62 
     63 void ReportValidationError(ValidationContext* context,
     64                            ValidationError error,
     65                            const char* description) {
     66   if (g_validation_error_observer) {
     67     g_validation_error_observer->set_last_error(error);
     68     return;
     69   }
     70 
     71   if (description) {
     72     LOG(ERROR) << "Invalid message: " << ValidationErrorToString(error) << " ("
     73                << description << ")";
     74     if (context->message()) {
     75       context->message()->NotifyBadMessage(
     76           base::StringPrintf("Validation failed for %s [%s (%s)]",
     77                              context->description().data(),
     78                              ValidationErrorToString(error), description));
     79     }
     80   } else {
     81     LOG(ERROR) << "Invalid message: " << ValidationErrorToString(error);
     82     if (context->message()) {
     83       context->message()->NotifyBadMessage(
     84           base::StringPrintf("Validation failed for %s [%s]",
     85                              context->description().data(),
     86                              ValidationErrorToString(error)));
     87     }
     88   }
     89 }
     90 
     91 ValidationErrorObserverForTesting::ValidationErrorObserverForTesting(
     92     const base::Closure& callback)
     93     : last_error_(VALIDATION_ERROR_NONE), callback_(callback) {
     94   DCHECK(!g_validation_error_observer);
     95   g_validation_error_observer = this;
     96 }
     97 
     98 ValidationErrorObserverForTesting::~ValidationErrorObserverForTesting() {
     99   DCHECK(g_validation_error_observer == this);
    100   g_validation_error_observer = nullptr;
    101 }
    102 
    103 bool ReportSerializationWarning(ValidationError error) {
    104   if (g_serialization_warning_observer) {
    105     g_serialization_warning_observer->set_last_warning(error);
    106     return true;
    107   }
    108 
    109   return false;
    110 }
    111 
    112 SerializationWarningObserverForTesting::SerializationWarningObserverForTesting()
    113     : last_warning_(VALIDATION_ERROR_NONE) {
    114   DCHECK(!g_serialization_warning_observer);
    115   g_serialization_warning_observer = this;
    116 }
    117 
    118 SerializationWarningObserverForTesting::
    119     ~SerializationWarningObserverForTesting() {
    120   DCHECK(g_serialization_warning_observer == this);
    121   g_serialization_warning_observer = nullptr;
    122 }
    123 
    124 }  // namespace internal
    125 }  // namespace mojo
    126