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/*
* Copyright 2008, The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#define LOG_TAG "wifi"
#include "jni.h"
#include <ScopedUtfChars.h>
#include <utils/misc.h>
#include <android_runtime/AndroidRuntime.h>
#include <utils/Log.h>
#include <utils/String16.h>
#include "wifi.h"
#define WIFI_PKG_NAME "android/net/wifi/WifiNative"
#define BUF_SIZE 256
#define EVENT_BUF_SIZE 2048
namespace android {
static jint DBG = false;
static int doCommand(const char *ifname, const char *cmd, char *replybuf, int replybuflen)
{
size_t reply_len = replybuflen - 1;
if (::wifi_command(ifname, cmd, replybuf, &reply_len) != 0)
return -1;
else {
// Strip off trailing newline
if (reply_len > 0 && replybuf[reply_len-1] == '\n')
replybuf[reply_len-1] = '\0';
else
replybuf[reply_len] = '\0';
return 0;
}
}
static jint doIntCommand(const char *ifname, const char* fmt, ...)
{
char buf[BUF_SIZE];
va_list args;
va_start(args, fmt);
int byteCount = vsnprintf(buf, sizeof(buf), fmt, args);
va_end(args);
if (byteCount < 0 || byteCount >= BUF_SIZE) {
return -1;
}
char reply[BUF_SIZE];
if (doCommand(ifname, buf, reply, sizeof(reply)) != 0) {
return -1;
}
return static_cast<jint>(atoi(reply));
}
static jboolean doBooleanCommand(const char *ifname, const char* expect, const char* fmt, ...)
{
char buf[BUF_SIZE];
va_list args;
va_start(args, fmt);
int byteCount = vsnprintf(buf, sizeof(buf), fmt, args);
va_end(args);
if (byteCount < 0 || byteCount >= BUF_SIZE) {
return JNI_FALSE;
}
char reply[BUF_SIZE];
if (doCommand(ifname, buf, reply, sizeof(reply)) != 0) {
return JNI_FALSE;
}
return (strcmp(reply, expect) == 0);
}
// Send a command to the supplicant, and return the reply as a String
static jstring doStringCommand(JNIEnv* env, const char *ifname, const char* fmt, ...) {
char buf[BUF_SIZE];
va_list args;
va_start(args, fmt);
int byteCount = vsnprintf(buf, sizeof(buf), fmt, args);
va_end(args);
if (byteCount < 0 || byteCount >= BUF_SIZE) {
return NULL;
}
char reply[4096];
if (doCommand(ifname, buf, reply, sizeof(reply)) != 0) {
return NULL;
}
// TODO: why not just NewStringUTF?
String16 str((char *)reply);
return env->NewString((const jchar *)str.string(), str.size());
}
static jboolean android_net_wifi_isDriverLoaded(JNIEnv* env, jobject)
{
return (jboolean)(::is_wifi_driver_loaded() == 1);
}
static jboolean android_net_wifi_loadDriver(JNIEnv* env, jobject)
{
return (jboolean)(::wifi_load_driver() == 0);
}
static jboolean android_net_wifi_unloadDriver(JNIEnv* env, jobject)
{
return (jboolean)(::wifi_unload_driver() == 0);
}
static jboolean android_net_wifi_startSupplicant(JNIEnv* env, jobject, jboolean p2pSupported)
{
return (jboolean)(::wifi_start_supplicant(p2pSupported) == 0);
}
static jboolean android_net_wifi_killSupplicant(JNIEnv* env, jobject, jboolean p2pSupported)
{
return (jboolean)(::wifi_stop_supplicant(p2pSupported) == 0);
}
static jboolean android_net_wifi_connectToSupplicant(JNIEnv* env, jobject, jstring jIface)
{
ScopedUtfChars ifname(env, jIface);
return (jboolean)(::wifi_connect_to_supplicant(ifname.c_str()) == 0);
}
static void android_net_wifi_closeSupplicantConnection(JNIEnv* env, jobject, jstring jIface)
{
ScopedUtfChars ifname(env, jIface);
::wifi_close_supplicant_connection(ifname.c_str());
}
static jstring android_net_wifi_waitForEvent(JNIEnv* env, jobject, jstring jIface)
{
char buf[EVENT_BUF_SIZE];
ScopedUtfChars ifname(env, jIface);
int nread = ::wifi_wait_for_event(ifname.c_str(), buf, sizeof buf);
if (nread > 0) {
return env->NewStringUTF(buf);
} else {
return NULL;
}
}
static jboolean android_net_wifi_doBooleanCommand(JNIEnv* env, jobject, jstring jIface,
jstring jCommand)
{
ScopedUtfChars ifname(env, jIface);
ScopedUtfChars command(env, jCommand);
if (command.c_str() == NULL) {
return JNI_FALSE;
}
if (DBG) ALOGD("doBoolean: %s", command.c_str());
return doBooleanCommand(ifname.c_str(), "OK", "%s", command.c_str());
}
static jint android_net_wifi_doIntCommand(JNIEnv* env, jobject, jstring jIface,
jstring jCommand)
{
ScopedUtfChars ifname(env, jIface);
ScopedUtfChars command(env, jCommand);
if (command.c_str() == NULL) {
return -1;
}
if (DBG) ALOGD("doInt: %s", command.c_str());
return doIntCommand(ifname.c_str(), "%s", command.c_str());
}
static jstring android_net_wifi_doStringCommand(JNIEnv* env, jobject, jstring jIface,
jstring jCommand)
{
ScopedUtfChars ifname(env, jIface);
ScopedUtfChars command(env, jCommand);
if (command.c_str() == NULL) {
return NULL;
}
if (DBG) ALOGD("doString: %s", command.c_str());
return doStringCommand(env, ifname.c_str(), "%s", command.c_str());
}
static jboolean android_net_wifi_setMode(JNIEnv* env, jobject, jint type)
{
return (jboolean)(::wifi_set_mode(type) == 0);
}
// ----------------------------------------------------------------------------
/*
* JNI registration.
*/
static JNINativeMethod gWifiMethods[] = {
/* name, signature, funcPtr */
{ "loadDriver", "()Z", (void *)android_net_wifi_loadDriver },
{ "isDriverLoaded", "()Z", (void *)android_net_wifi_isDriverLoaded },
{ "unloadDriver", "()Z", (void *)android_net_wifi_unloadDriver },
{ "startSupplicant", "(Z)Z", (void *)android_net_wifi_startSupplicant },
{ "killSupplicant", "(Z)Z", (void *)android_net_wifi_killSupplicant },
{ "connectToSupplicant", "(Ljava/lang/String;)Z",
(void *)android_net_wifi_connectToSupplicant },
{ "closeSupplicantConnection", "(Ljava/lang/String;)V",
(void *)android_net_wifi_closeSupplicantConnection },
{ "waitForEvent", "(Ljava/lang/String;)Ljava/lang/String;",
(void*) android_net_wifi_waitForEvent },
{ "doBooleanCommand", "(Ljava/lang/String;Ljava/lang/String;)Z",
(void*) android_net_wifi_doBooleanCommand },
{ "doIntCommand", "(Ljava/lang/String;Ljava/lang/String;)I",
(void*) android_net_wifi_doIntCommand },
{ "doStringCommand", "(Ljava/lang/String;Ljava/lang/String;)Ljava/lang/String;",
(void*) android_net_wifi_doStringCommand },
{ "setMode", "(I)Z", (void*) android_net_wifi_setMode},
};
int register_android_net_wifi_WifiManager(JNIEnv* env)
{
return AndroidRuntime::registerNativeMethods(env,
WIFI_PKG_NAME, gWifiMethods, NELEM(gWifiMethods));
}
}; // namespace android
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