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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 "V8WorkerGlobalScope.h"
     33 
     34 #include "bindings/v8/ExceptionState.h"
     35 #include "bindings/v8/ScheduledAction.h"
     36 #include "bindings/v8/V8Binding.h"
     37 #include "bindings/v8/V8Utilities.h"
     38 #include "bindings/v8/V8WorkerGlobalScopeEventListener.h"
     39 #include "bindings/v8/WorkerScriptController.h"
     40 #include "core/inspector/ScriptCallStack.h"
     41 #include "core/page/ContentSecurityPolicy.h"
     42 #include "core/page/DOMTimer.h"
     43 #include "core/page/DOMWindowTimers.h"
     44 #include "core/workers/WorkerGlobalScope.h"
     45 #include "modules/websockets/WebSocket.h"
     46 #include "wtf/OwnArrayPtr.h"
     47 
     48 namespace WebCore {
     49 
     50 void SetTimeoutOrInterval(const v8::FunctionCallbackInfo<v8::Value>& args, bool singleShot)
     51 {
     52     WorkerGlobalScope* workerGlobalScope = V8WorkerGlobalScope::toNative(args.Holder());
     53 
     54     int argumentCount = args.Length();
     55     if (argumentCount < 1)
     56         return;
     57 
     58     v8::Handle<v8::Value> function = args[0];
     59 
     60     WorkerScriptController* script = workerGlobalScope->script();
     61     if (!script)
     62         return;
     63 
     64     OwnPtr<ScheduledAction> action;
     65     v8::Handle<v8::Context> v8Context = script->context();
     66     if (function->IsString()) {
     67         if (ContentSecurityPolicy* policy = workerGlobalScope->contentSecurityPolicy()) {
     68             if (!policy->allowEval()) {
     69                 v8SetReturnValue(args, 0);
     70                 return;
     71             }
     72         }
     73         action = adoptPtr(new ScheduledAction(v8Context, toWebCoreString(function), workerGlobalScope->url(), args.GetIsolate()));
     74     } else if (function->IsFunction()) {
     75         size_t paramCount = argumentCount >= 2 ? argumentCount - 2 : 0;
     76         OwnArrayPtr<v8::Local<v8::Value> > params;
     77         if (paramCount > 0) {
     78             params = adoptArrayPtr(new v8::Local<v8::Value>[paramCount]);
     79             for (size_t i = 0; i < paramCount; ++i)
     80                 params[i] = args[i+2];
     81         }
     82         // ScheduledAction takes ownership of actual params and releases them in its destructor.
     83         action = adoptPtr(new ScheduledAction(v8Context, v8::Handle<v8::Function>::Cast(function), paramCount, params.get(), args.GetIsolate()));
     84     } else
     85         return;
     86 
     87     int32_t timeout = argumentCount >= 2 ? args[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(args, timerId);
     95 }
     96 
     97 void V8WorkerGlobalScope::importScriptsMethodCustom(const v8::FunctionCallbackInfo<v8::Value>& args)
     98 {
     99     if (!args.Length())
    100         return;
    101 
    102     Vector<String> urls;
    103     for (int i = 0; i < args.Length(); i++) {
    104         V8TRYCATCH_VOID(v8::Handle<v8::String>, scriptUrl, args[i]->ToString());
    105         if (scriptUrl.IsEmpty())
    106             return;
    107         urls.append(toWebCoreString(scriptUrl));
    108     }
    109 
    110     WorkerGlobalScope* workerGlobalScope = V8WorkerGlobalScope::toNative(args.Holder());
    111 
    112     ExceptionState es(args.GetIsolate());
    113     workerGlobalScope->importScripts(urls, es);
    114     es.throwIfNeeded();
    115 }
    116 
    117 void V8WorkerGlobalScope::setTimeoutMethodCustom(const v8::FunctionCallbackInfo<v8::Value>& args)
    118 {
    119     return SetTimeoutOrInterval(args, true);
    120 }
    121 
    122 void V8WorkerGlobalScope::setIntervalMethodCustom(const v8::FunctionCallbackInfo<v8::Value>& args)
    123 {
    124     return SetTimeoutOrInterval(args, false);
    125 }
    126 
    127 v8::Handle<v8::Value> toV8(WorkerGlobalScope* impl, v8::Handle<v8::Object> creationContext, v8::Isolate* isolate)
    128 {
    129     // Notice that we explicitly ignore creationContext because the WorkerGlobalScope is its own creationContext.
    130 
    131     if (!impl)
    132         return v8NullWithCheck(isolate);
    133 
    134     WorkerScriptController* script = impl->script();
    135     if (!script)
    136         return v8NullWithCheck(isolate);
    137 
    138     v8::Handle<v8::Object> global = script->context()->Global();
    139     ASSERT(!global.IsEmpty());
    140     return global;
    141 }
    142 
    143 v8::Handle<v8::Value> toV8ForMainWorld(WorkerGlobalScope* impl, v8::Handle<v8::Object> creationContext, v8::Isolate* isolate)
    144 {
    145     return toV8(impl, creationContext, isolate);
    146 }
    147 
    148 } // namespace WebCore
    149