1/*
2 * Copyright (C) 2004, 2006, 2013 Apple Inc.  All rights reserved.
3 * Copyright (C) 2006 Alexey Proskuryakov (ap@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 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 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 "npruntime_impl.h"
41#include "npruntime_priv.h"
42#include "runtime_object.h"
43#include "runtime_root.h"
44#include <wtf/Assertions.h>
45#include <wtf/text/WTFString.h>
46
47namespace JSC { namespace Bindings {
48
49static 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()
69void convertValueToNPVariant(ExecState* exec, JSValue value, NPVariant* result)
70{
71    JSLockHolder lock(exec);
72
73    VOID_TO_NPVARIANT(*result);
74
75    if (value.isString()) {
76        String ustring = value.toString(exec)->value(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::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            JSGlobalObject* globalObject = exec->vmEntryGlobalObject();
98
99            RootObject* rootObject = findRootObject(globalObject);
100            if (rootObject) {
101                NPObject* npObject = _NPN_CreateScriptObject(0, object, rootObject);
102                OBJECT_TO_NPVARIANT(npObject, *result);
103            }
104        }
105    }
106}
107
108JSValue convertNPVariantToValue(ExecState* exec, const NPVariant* variant, RootObject* rootObject)
109{
110    JSLockHolder lock(exec);
111
112    NPVariantType type = variant->type;
113
114    if (type == NPVariantType_Bool)
115        return jsBoolean(NPVARIANT_TO_BOOLEAN(*variant));
116    if (type == NPVariantType_Null)
117        return jsNull();
118    if (type == NPVariantType_Void)
119        return jsUndefined();
120    if (type == NPVariantType_Int32)
121        return jsNumber(NPVARIANT_TO_INT32(*variant));
122    if (type == NPVariantType_Double)
123        return jsNumber(NPVARIANT_TO_DOUBLE(*variant));
124    if (type == NPVariantType_String)
125        return jsStringWithCache(exec, convertNPStringToUTF16(&variant->value.stringValue));
126    if (type == NPVariantType_Object) {
127        NPObject* obj = variant->value.objectValue;
128
129        if (obj->_class == NPScriptObjectClass)
130            // Get JSObject from NP_JavaScriptObject.
131            return ((JavaScriptObject*)obj)->imp;
132
133        // Wrap NPObject in a CInstance.
134        return CInstance::create(obj, rootObject)->createRuntimeObject(exec);
135    }
136
137    return jsUndefined();
138}
139
140String convertNPStringToUTF16(const NPString* string)
141{
142    return String::fromUTF8WithLatin1Fallback(string->UTF8Characters, string->UTF8Length);
143}
144
145Identifier identifierFromNPIdentifier(ExecState* exec, const NPUTF8* name)
146{
147    return Identifier(exec, convertUTF8ToUTF16WithLatin1Fallback(name, -1));
148}
149
150} }
151
152#endif // ENABLE(NETSCAPE_PLUGIN_API)
153