1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
|
/* SPDX-License-Identifier: Apache-2.0
*
* Copyright © 2017-2021 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
*/
#include <assert.h>
#include <jni.h>
#include <stdlib.h>
#include <string.h>
#include <android/log.h>
#define TAG "WireGuard/GoBackend"
struct go_string { const char *str; long n; };
extern int wgTurnOn(struct go_string ifname, int tun_fd, struct go_string settings, void *eventHandler);
extern void *wgTurnOff(int handle);
extern int wgGetSocketV4(int handle);
extern int wgGetSocketV6(int handle);
extern char *wgGetConfig(int handle);
extern char *wgVersion();
extern void wgOnEvent(void *eventHandler, const char *event);
static JavaVM *gVm;
static jclass gEventHandlerClass;
static jmethodID gOnEventMethod;
JNIEXPORT jint JNI_OnLoad(JavaVM *vm, void *reserved)
{
JNIEnv* env;
char buf[128];
gVm = vm;
if ((*vm)->GetEnv(vm, (void**)&env, JNI_VERSION_1_6) != JNI_OK) {
return JNI_ERR;
}
gEventHandlerClass = (*env)->FindClass(env, "com/wireguard/android/backend/EventHandler");
gOnEventMethod = (*env)->GetMethodID(env, gEventHandlerClass, "onEvent", "(Ljava/lang/String;)V");
return JNI_VERSION_1_6;
}
JNIEXPORT jint JNICALL Java_com_wireguard_android_backend_GoBackend_wgTurnOn(JNIEnv *env, jclass c, jstring ifname, jint tun_fd, jstring settings, jobject eventHandler)
{
const char *ifname_str = (*env)->GetStringUTFChars(env, ifname, 0);
size_t ifname_len = (*env)->GetStringUTFLength(env, ifname);
const char *settings_str = (*env)->GetStringUTFChars(env, settings, 0);
size_t settings_len = (*env)->GetStringUTFLength(env, settings);
jobject event_handler = (*env)->NewGlobalRef(env, eventHandler);
int ret = wgTurnOn((struct go_string){
.str = ifname_str,
.n = ifname_len
}, tun_fd, (struct go_string){
.str = settings_str,
.n = settings_len
}, event_handler);
(*env)->ReleaseStringUTFChars(env, ifname, ifname_str);
(*env)->ReleaseStringUTFChars(env, settings, settings_str);
return ret;
}
JNIEXPORT void JNICALL Java_com_wireguard_android_backend_GoBackend_wgTurnOff(JNIEnv *env, jclass c, jint handle)
{
jobject event_handler = wgTurnOff(handle);
if (event_handler)
(*env)->DeleteGlobalRef(env, event_handler);
}
JNIEXPORT jint JNICALL Java_com_wireguard_android_backend_GoBackend_wgGetSocketV4(JNIEnv *env, jclass c, jint handle)
{
return wgGetSocketV4(handle);
}
JNIEXPORT jint JNICALL Java_com_wireguard_android_backend_GoBackend_wgGetSocketV6(JNIEnv *env, jclass c, jint handle)
{
return wgGetSocketV6(handle);
}
JNIEXPORT jstring JNICALL Java_com_wireguard_android_backend_GoBackend_wgGetConfig(JNIEnv *env, jclass c, jint handle)
{
jstring ret;
char *config = wgGetConfig(handle);
if (!config)
return NULL;
ret = (*env)->NewStringUTF(env, config);
free(config);
return ret;
}
JNIEXPORT jstring JNICALL Java_com_wireguard_android_backend_GoBackend_wgVersion(JNIEnv *env, jclass c)
{
jstring ret;
char *version = wgVersion();
if (!version)
return NULL;
ret = (*env)->NewStringUTF(env, version);
free(version);
return ret;
}
void wgOnEvent(void *eventHandler, const char *event)
{
JavaVMAttachArgs attachArgs = { JNI_VERSION_1_6, NULL, NULL };
jobject jEventHandler = eventHandler;
JNIEnv *env;
jint rs = (*gVm)->AttachCurrentThread(gVm, &env, &attachArgs);
assert (rs == JNI_OK);
jstring jevent = (*env)->NewStringUTF(env, event);
(*env)->CallVoidMethod(env, jEventHandler, gOnEventMethod, jevent);
}
|
