1/*
2 * Copyright (C) 2013 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#define LOG_TAG "PacProcessor"
18
19#include <utils/Log.h>
20#include <utils/Mutex.h>
21#include "android_runtime/AndroidRuntime.h"
22
23#include "jni.h"
24#include "JNIHelp.h"
25
26#include "proxy_resolver_v8.h"
27
28namespace android {
29
30class ProxyErrorLogger : public net::ProxyErrorListener {
31public:
32    ~ProxyErrorLogger() {
33
34    }
35    void AlertMessage(String16 message) {
36        String8 str(message);
37        ALOGD("Alert: %s", str.string());
38    }
39    void ErrorMessage(String16 message) {
40        String8 str(message);
41        ALOGE("Error: %s", str.string());
42    }
43};
44
45net::ProxyResolverV8* proxyResolver = NULL;
46ProxyErrorLogger* logger = NULL;
47bool pacSet = false;
48
49String16 jstringToString16(JNIEnv* env, jstring jstr) {
50    const jchar* str = env->GetStringCritical(jstr, 0);
51    String16 str16(reinterpret_cast<const char16_t*>(str),
52                   env->GetStringLength(jstr));
53    env->ReleaseStringCritical(jstr, str);
54    return str16;
55}
56
57jstring string16ToJstring(JNIEnv* env, String16 string) {
58    const char16_t* str = string.string();
59    size_t len = string.size();
60
61    return env->NewString(reinterpret_cast<const jchar*>(str), len);
62}
63
64static jboolean com_android_pacprocessor_PacNative_createV8ParserNativeLocked(JNIEnv* /* env */,
65        jobject) {
66    if (proxyResolver == NULL) {
67        logger = new ProxyErrorLogger();
68        proxyResolver = new net::ProxyResolverV8(net::ProxyResolverJSBindings::CreateDefault(),
69                logger);
70        pacSet = false;
71        return JNI_FALSE;
72    }
73    return JNI_TRUE;
74}
75
76static jboolean com_android_pacprocessor_PacNative_destroyV8ParserNativeLocked(JNIEnv* /* env */,
77        jobject) {
78    if (proxyResolver != NULL) {
79        delete logger;
80        delete proxyResolver;
81        logger = NULL;
82        proxyResolver = NULL;
83        return JNI_FALSE;
84    }
85    return JNI_TRUE;
86}
87
88static jboolean com_android_pacprocessor_PacNative_setProxyScriptNativeLocked(JNIEnv* env, jobject,
89        jstring script) {
90    String16 script16 = jstringToString16(env, script);
91
92    if (proxyResolver == NULL) {
93        ALOGE("V8 Parser not started when setting PAC script");
94        return JNI_TRUE;
95    }
96
97    if (proxyResolver->SetPacScript(script16) != OK) {
98        ALOGE("Unable to set PAC script");
99        return JNI_TRUE;
100    }
101    pacSet = true;
102
103    return JNI_FALSE;
104}
105
106static jstring com_android_pacprocessor_PacNative_makeProxyRequestNativeLocked(JNIEnv* env, jobject,
107        jstring url, jstring host) {
108    String16 url16 = jstringToString16(env, url);
109    String16 host16 = jstringToString16(env, host);
110    String16 ret;
111
112    if (proxyResolver == NULL) {
113        ALOGE("V8 Parser not initialized when running PAC script");
114        return NULL;
115    }
116
117    if (!pacSet) {
118        ALOGW("Attempting to run PAC with no script set");
119        return NULL;
120    }
121
122    if (proxyResolver->GetProxyForURL(url16, host16, &ret) != OK) {
123        String8 ret8(ret);
124        ALOGE("Error Running PAC: %s", ret8.string());
125        return NULL;
126    }
127
128    jstring jret = string16ToJstring(env, ret);
129
130    return jret;
131}
132
133static JNINativeMethod gMethods[] = {
134    { "createV8ParserNativeLocked", "()Z",
135        (void*)com_android_pacprocessor_PacNative_createV8ParserNativeLocked},
136    { "destroyV8ParserNativeLocked", "()Z",
137        (void*)com_android_pacprocessor_PacNative_destroyV8ParserNativeLocked},
138    { "setProxyScriptNativeLocked", "(Ljava/lang/String;)Z",
139        (void*)com_android_pacprocessor_PacNative_setProxyScriptNativeLocked},
140    { "makeProxyRequestNativeLocked", "(Ljava/lang/String;Ljava/lang/String;)Ljava/lang/String;",
141        (void*)com_android_pacprocessor_PacNative_makeProxyRequestNativeLocked},
142};
143
144int register_com_android_pacprocessor_PacNative(JNIEnv* env) {
145    return jniRegisterNativeMethods(env, "com/android/pacprocessor/PacNative",
146            gMethods, NELEM(gMethods));
147}
148
149} /* namespace android */
150