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      1 /*
      2  * Copyright (C) 2013 Google Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions are
      6  * met:
      7  *
      8  *     * Redistributions of source code must retain the above copyright
      9  * notice, this list of conditions and the following disclaimer.
     10  *     * Redistributions in binary form must reproduce the above
     11  * copyright notice, this list of conditions and the following disclaimer
     12  * in the documentation and/or other materials provided with the
     13  * distribution.
     14  *     * Neither the name of Google Inc. nor the names of its
     15  * contributors may be used to endorse or promote products derived from
     16  * this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     23  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     24  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 #include "config.h"
     32 #include "bindings/v8/ExceptionState.h"
     33 
     34 #include "bindings/v8/ExceptionMessages.h"
     35 #include "bindings/v8/V8ThrowException.h"
     36 #include "core/dom/ExceptionCode.h"
     37 
     38 namespace WebCore {
     39 
     40 void ExceptionState::clearException()
     41 {
     42     m_code = 0;
     43     m_exception.clear();
     44 }
     45 
     46 void ExceptionState::throwDOMException(const ExceptionCode& ec, const String& message)
     47 {
     48     ASSERT(ec);
     49     ASSERT(m_isolate);
     50 
     51     // SecurityError is thrown via ::throwSecurityError, and _careful_ consideration must be given to the data exposed to JavaScript via the 'sanitizedMessage'.
     52     ASSERT(ec != SecurityError);
     53 
     54     m_code = ec;
     55     String processedMessage = addExceptionContext(message);
     56     setException(V8ThrowException::createDOMException(ec, processedMessage, m_creationContext, m_isolate));
     57 }
     58 
     59 void ExceptionState::throwSecurityError(const String& sanitizedMessage, const String& unsanitizedMessage)
     60 {
     61     ASSERT(m_isolate);
     62     m_code = SecurityError;
     63     String finalSanitized = addExceptionContext(sanitizedMessage);
     64     String finalUnsanitized = addExceptionContext(unsanitizedMessage);
     65     setException(V8ThrowException::createDOMException(SecurityError, finalSanitized, finalUnsanitized, m_creationContext, m_isolate));
     66 }
     67 
     68 void ExceptionState::setException(v8::Handle<v8::Value> exception)
     69 {
     70     // FIXME: Assert that exception is not empty?
     71     if (exception.IsEmpty()) {
     72         clearException();
     73         return;
     74     }
     75 
     76     m_exception.set(m_isolate, exception);
     77 }
     78 
     79 void ExceptionState::throwTypeError(const String& message)
     80 {
     81     ASSERT(m_isolate);
     82     m_code = TypeError;
     83     setException(V8ThrowException::createTypeError(addExceptionContext(message), m_isolate));
     84 }
     85 
     86 void TrackExceptionState::throwDOMException(const ExceptionCode& ec, const String& message)
     87 {
     88     m_code = ec;
     89 }
     90 
     91 void TrackExceptionState::throwTypeError(const String&)
     92 {
     93     m_code = TypeError;
     94 }
     95 
     96 void TrackExceptionState::throwSecurityError(const String&, const String&)
     97 {
     98     m_code = SecurityError;
     99 }
    100 
    101 String ExceptionState::addExceptionContext(const String& message) const
    102 {
    103     if (message.isEmpty())
    104         return message;
    105 
    106     String processedMessage = message;
    107     if (propertyName() && interfaceName() && m_context != UnknownContext) {
    108         if (m_context == DeletionContext)
    109             processedMessage = ExceptionMessages::failedToDelete(propertyName(), interfaceName(), message);
    110         else if (m_context == ExecutionContext)
    111             processedMessage = ExceptionMessages::failedToExecute(propertyName(), interfaceName(), message);
    112         else if (m_context == GetterContext)
    113             processedMessage = ExceptionMessages::failedToGet(propertyName(), interfaceName(), message);
    114         else if (m_context == SetterContext)
    115             processedMessage = ExceptionMessages::failedToSet(propertyName(), interfaceName(), message);
    116     } else if (!propertyName() && interfaceName() && m_context == ConstructionContext) {
    117         processedMessage = ExceptionMessages::failedToConstruct(interfaceName(), message);
    118     }
    119     return processedMessage;
    120 }
    121 
    122 } // namespace WebCore
    123