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1 /*
2  * Copyright (C) 2004, 2006 Apple Computer, 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 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 "JSDOMWindow.h"
34 #include "NP_jsobject.h"
35 #include "c_instance.h"
36 #include <runtime/JSGlobalObject.h>
37 #include <runtime/JSLock.h>
38 #include "PlatformString.h"
39 #include "npruntime_impl.h"
40 #include "npruntime_priv.h"
41 #include "runtime_object.h"
42 #include "runtime_root.h"
43 #include <wtf/Assertions.h>
44 
45 using WebCore::String;
46 
47 namespace JSC { namespace Bindings {
48 
convertUTF8ToUTF16WithLatin1Fallback(const NPUTF8 * UTF8Chars,int UTF8Length)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()
convertValueToNPVariant(ExecState * exec,JSValue value,NPVariant * result)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.UTF8String();
78         NPString string = { (const NPUTF8*)cstring.c_str(), static_cast<uint32_t>(cstring.size()) };
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() == &RuntimeObjectImp::s_info) {
89             RuntimeObjectImp* imp = static_cast<RuntimeObjectImp*>(object);
90             CInstance* instance = static_cast<CInstance*>(imp->getInternalInstance());
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->dynamicGlobalObject();
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 
convertNPVariantToValue(ExecState * exec,const NPVariant * variant,RootObject * rootObject)108 JSValue convertNPVariantToValue(ExecState* exec, const NPVariant* variant, RootObject* rootObject)
109 {
110     JSLock lock(SilenceAssertionsOnly);
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(exec, NPVARIANT_TO_INT32(*variant));
122     if (type == NPVariantType_Double)
123         return jsNumber(exec, NPVARIANT_TO_DOUBLE(*variant));
124     if (type == NPVariantType_String)
125         return jsString(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 
convertNPStringToUTF16(const NPString * string)140 String convertNPStringToUTF16(const NPString* string)
141 {
142     return String::fromUTF8WithLatin1Fallback(string->UTF8Characters, string->UTF8Length);
143 }
144 
identifierFromNPIdentifier(const NPUTF8 * name)145 Identifier identifierFromNPIdentifier(const NPUTF8* name)
146 {
147     return Identifier(WebCore::JSDOMWindow::commonJSGlobalData(), convertUTF8ToUTF16WithLatin1Fallback(name, -1));
148 }
149 
150 } }
151 
152 #endif // ENABLE(NETSCAPE_PLUGIN_API)
153