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      1 /*
      2  * Copyright (C) 2004, 2006 Apple Computer, Inc.  All rights reserved.
      3  * Copyright (C) 2006 Alexey Proskuryakov (ap (at) nypop.com)
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions
      7  * are met:
      8  * 1. Redistributions of source code must retain the above copyright
      9  *    notice, this list of conditions and the following disclaimer.
     10  * 2. Redistributions in binary form must reproduce the above copyright
     11  *    notice, this list of conditions and the following disclaimer in the
     12  *    documentation and/or other materials provided with the distribution.
     13  *
     14  * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
     15  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     17  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
     18  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     19  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     20  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     21  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
     22  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     24  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     25  */
     26 
     27 #include "config.h"
     28 
     29 #if ENABLE(NETSCAPE_PLUGIN_API)
     30 
     31 #include "c_utility.h"
     32 
     33 #include "CRuntimeObject.h"
     34 #include "JSDOMBinding.h"
     35 #include "JSDOMWindow.h"
     36 #include "NP_jsobject.h"
     37 #include "c_instance.h"
     38 #include <runtime/JSGlobalObject.h>
     39 #include <runtime/JSLock.h>
     40 #include "PlatformString.h"
     41 #include "npruntime_impl.h"
     42 #include "npruntime_priv.h"
     43 #include "runtime_object.h"
     44 #include "runtime_root.h"
     45 #include <wtf/Assertions.h>
     46 
     47 namespace JSC { namespace Bindings {
     48 
     49 static String convertUTF8ToUTF16WithLatin1Fallback(const NPUTF8* UTF8Chars, int UTF8Length)
     50 {
     51     ASSERT(UTF8Chars || UTF8Length == 0);
     52 
     53     if (UTF8Length == -1)
     54         UTF8Length = static_cast<int>(strlen(UTF8Chars));
     55 
     56     String result = String::fromUTF8(UTF8Chars, UTF8Length);
     57 
     58     // If we got back a null string indicating an unsuccessful conversion, fall back to latin 1.
     59     // Some plugins return invalid UTF-8 in NPVariantType_String, see <http://bugs.webkit.org/show_bug.cgi?id=5163>
     60     // There is no "bad data" for latin1. It is unlikely that the plugin was really sending text in this encoding,
     61     // but it should have used UTF-8, and now we are simply avoiding a crash.
     62     if (result.isNull())
     63         result = String(UTF8Chars, UTF8Length);
     64 
     65     return result;
     66 }
     67 
     68 // Variant value must be released with NPReleaseVariantValue()
     69 void convertValueToNPVariant(ExecState* exec, JSValue value, NPVariant* result)
     70 {
     71     JSLock lock(SilenceAssertionsOnly);
     72 
     73     VOID_TO_NPVARIANT(*result);
     74 
     75     if (value.isString()) {
     76         UString ustring = value.toString(exec);
     77         CString cstring = ustring.utf8();
     78         NPString string = { (const NPUTF8*)cstring.data(), static_cast<uint32_t>(cstring.length()) };
     79         NPN_InitializeVariantWithStringCopy(result, &string);
     80     } else if (value.isNumber()) {
     81         DOUBLE_TO_NPVARIANT(value.toNumber(exec), *result);
     82     } else if (value.isBoolean()) {
     83         BOOLEAN_TO_NPVARIANT(value.toBoolean(exec), *result);
     84     } else if (value.isNull()) {
     85         NULL_TO_NPVARIANT(*result);
     86     } else if (value.isObject()) {
     87         JSObject* object = asObject(value);
     88         if (object->classInfo() == &CRuntimeObject::s_info) {
     89             CRuntimeObject* runtimeObject = static_cast<CRuntimeObject*>(object);
     90             CInstance* instance = runtimeObject->getInternalCInstance();
     91             if (instance) {
     92                 NPObject* obj = instance->getObject();
     93                 _NPN_RetainObject(obj);
     94                 OBJECT_TO_NPVARIANT(obj, *result);
     95             }
     96         } else {
     97 #ifdef ANDROID
     98             RootObject* rootObject = findRootObject(exec->dynamicGlobalObject());
     99             if (!rootObject)
    100                 rootObject = findRootObject(exec->lexicalGlobalObject());
    101 #else
    102             JSGlobalObject* globalObject = exec->dynamicGlobalObject();
    103 
    104             RootObject* rootObject = findRootObject(globalObject);
    105 #endif
    106             if (rootObject) {
    107                 NPObject* npObject = _NPN_CreateScriptObject(0, object, rootObject);
    108                 OBJECT_TO_NPVARIANT(npObject, *result);
    109             }
    110         }
    111     }
    112 }
    113 
    114 JSValue convertNPVariantToValue(ExecState* exec, const NPVariant* variant, RootObject* rootObject)
    115 {
    116     JSLock lock(SilenceAssertionsOnly);
    117 
    118     NPVariantType type = variant->type;
    119 
    120     if (type == NPVariantType_Bool)
    121         return jsBoolean(NPVARIANT_TO_BOOLEAN(*variant));
    122     if (type == NPVariantType_Null)
    123         return jsNull();
    124     if (type == NPVariantType_Void)
    125         return jsUndefined();
    126     if (type == NPVariantType_Int32)
    127         return jsNumber(NPVARIANT_TO_INT32(*variant));
    128     if (type == NPVariantType_Double)
    129         return jsNumber(NPVARIANT_TO_DOUBLE(*variant));
    130     if (type == NPVariantType_String)
    131         return WebCore::jsString(exec, convertNPStringToUTF16(&variant->value.stringValue));
    132     if (type == NPVariantType_Object) {
    133         NPObject* obj = variant->value.objectValue;
    134 
    135         if (obj->_class == NPScriptObjectClass)
    136             // Get JSObject from NP_JavaScriptObject.
    137             return ((JavaScriptObject*)obj)->imp;
    138 
    139         // Wrap NPObject in a CInstance.
    140         return CInstance::create(obj, rootObject)->createRuntimeObject(exec);
    141     }
    142 
    143     return jsUndefined();
    144 }
    145 
    146 String convertNPStringToUTF16(const NPString* string)
    147 {
    148     return String::fromUTF8WithLatin1Fallback(string->UTF8Characters, string->UTF8Length);
    149 }
    150 
    151 Identifier identifierFromNPIdentifier(ExecState* exec, const NPUTF8* name)
    152 {
    153     return Identifier(exec, WebCore::stringToUString(convertUTF8ToUTF16WithLatin1Fallback(name, -1)));
    154 }
    155 
    156 } }
    157 
    158 #endif // ENABLE(NETSCAPE_PLUGIN_API)
    159