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      1 /*
      2  * Copyright (C) 2009 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/core/v8/V8WorkerGlobalScope.h"
     33 
     34 #include "bindings/core/v8/ExceptionState.h"
     35 #include "bindings/core/v8/ScheduledAction.h"
     36 #include "bindings/core/v8/V8Binding.h"
     37 #include "bindings/core/v8/V8WorkerGlobalScopeEventListener.h"
     38 #include "bindings/core/v8/WorkerScriptController.h"
     39 #include "core/frame/DOMTimer.h"
     40 #include "core/frame/DOMWindowTimers.h"
     41 #include "core/frame/csp/ContentSecurityPolicy.h"
     42 #include "core/inspector/ScriptCallStack.h"
     43 #include "core/workers/WorkerGlobalScope.h"
     44 #include "wtf/OwnPtr.h"
     45 
     46 namespace blink {
     47 
     48 static void setTimeoutOrInterval(const v8::FunctionCallbackInfo<v8::Value>& info, bool singleShot)
     49 {
     50     WorkerGlobalScope* workerGlobalScope = V8WorkerGlobalScope::toImpl(info.Holder());
     51     ASSERT(workerGlobalScope);
     52 
     53     int argumentCount = info.Length();
     54     if (argumentCount < 1)
     55         return;
     56 
     57     v8::Handle<v8::Value> function = info[0];
     58 
     59     WorkerScriptController* script = workerGlobalScope->script();
     60     if (!script)
     61         return;
     62 
     63     ScriptState* scriptState = ScriptState::current(info.GetIsolate());
     64     OwnPtr<ScheduledAction> action;
     65     if (function->IsString()) {
     66         if (ContentSecurityPolicy* policy = workerGlobalScope->contentSecurityPolicy()) {
     67             if (!policy->allowEval()) {
     68                 v8SetReturnValue(info, 0);
     69                 return;
     70             }
     71         }
     72         action = adoptPtr(new ScheduledAction(scriptState, toCoreString(function.As<v8::String>()), KURL(), info.GetIsolate()));
     73     } else if (function->IsFunction()) {
     74         size_t paramCount = argumentCount >= 2 ? argumentCount - 2 : 0;
     75         OwnPtr<v8::Local<v8::Value>[]> params;
     76         if (paramCount > 0) {
     77             params = adoptArrayPtr(new v8::Local<v8::Value>[paramCount]);
     78             for (size_t i = 0; i < paramCount; ++i)
     79                 params[i] = info[i+2];
     80         }
     81         // ScheduledAction takes ownership of actual params and releases them in its destructor.
     82         action = adoptPtr(new ScheduledAction(scriptState, v8::Handle<v8::Function>::Cast(function), paramCount, params.get(), info.GetIsolate()));
     83     } else {
     84         return;
     85     }
     86 
     87     int32_t timeout = argumentCount >= 2 ? info[1]->Int32Value() : 0;
     88     int timerId;
     89     if (singleShot)
     90         timerId = DOMWindowTimers::setTimeout(*workerGlobalScope, action.release(), timeout);
     91     else
     92         timerId = DOMWindowTimers::setInterval(*workerGlobalScope, action.release(), timeout);
     93 
     94     v8SetReturnValue(info, timerId);
     95 }
     96 
     97 void V8WorkerGlobalScope::setTimeoutMethodCustom(const v8::FunctionCallbackInfo<v8::Value>& info)
     98 {
     99     return setTimeoutOrInterval(info, true);
    100 }
    101 
    102 void V8WorkerGlobalScope::setIntervalMethodCustom(const v8::FunctionCallbackInfo<v8::Value>& info)
    103 {
    104     return setTimeoutOrInterval(info, false);
    105 }
    106 
    107 v8::Handle<v8::Value> toV8(WorkerGlobalScope* impl, v8::Handle<v8::Object> creationContext, v8::Isolate* isolate)
    108 {
    109     // Notice that we explicitly ignore creationContext because the WorkerGlobalScope is its own creationContext.
    110 
    111     if (!impl)
    112         return v8::Null(isolate);
    113 
    114     WorkerScriptController* script = impl->script();
    115     if (!script)
    116         return v8::Null(isolate);
    117 
    118     v8::Handle<v8::Object> global = script->context()->Global();
    119     ASSERT(!global.IsEmpty());
    120     return global;
    121 }
    122 
    123 } // namespace blink
    124