Elliott Hughes | a11d574 | 2013-08-09 14:59:39 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2008, 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 "wifi" |
| 18 | |
| 19 | #include "jni.h" |
| 20 | #include <ScopedUtfChars.h> |
| 21 | #include <utils/misc.h> |
| 22 | #include <android_runtime/AndroidRuntime.h> |
| 23 | #include <utils/Log.h> |
| 24 | #include <utils/String16.h> |
| 25 | |
| 26 | #include "wifi.h" |
| 27 | |
| 28 | #define REPLY_BUF_SIZE 4096 // wpa_supplicant's maximum size. |
| 29 | #define EVENT_BUF_SIZE 2048 |
| 30 | |
| 31 | namespace android { |
| 32 | |
| 33 | static jint DBG = false; |
| 34 | |
| 35 | static bool doCommand(JNIEnv* env, jstring javaCommand, |
| 36 | char* reply, size_t reply_len) { |
| 37 | ScopedUtfChars command(env, javaCommand); |
| 38 | if (command.c_str() == NULL) { |
| 39 | return false; // ScopedUtfChars already threw on error. |
| 40 | } |
| 41 | |
| 42 | if (DBG) { |
| 43 | ALOGD("doCommand: %s", command.c_str()); |
| 44 | } |
| 45 | |
| 46 | --reply_len; // Ensure we have room to add NUL termination. |
| 47 | if (::wifi_command(command.c_str(), reply, &reply_len) != 0) { |
| 48 | return false; |
| 49 | } |
| 50 | |
| 51 | // Strip off trailing newline. |
| 52 | if (reply_len > 0 && reply[reply_len-1] == '\n') { |
| 53 | reply[reply_len-1] = '\0'; |
| 54 | } else { |
| 55 | reply[reply_len] = '\0'; |
| 56 | } |
| 57 | return true; |
| 58 | } |
| 59 | |
| 60 | static jint doIntCommand(JNIEnv* env, jstring javaCommand) { |
| 61 | char reply[REPLY_BUF_SIZE]; |
| 62 | if (!doCommand(env, javaCommand, reply, sizeof(reply))) { |
| 63 | return -1; |
| 64 | } |
| 65 | return static_cast<jint>(atoi(reply)); |
| 66 | } |
| 67 | |
| 68 | static jboolean doBooleanCommand(JNIEnv* env, jstring javaCommand) { |
| 69 | char reply[REPLY_BUF_SIZE]; |
| 70 | if (!doCommand(env, javaCommand, reply, sizeof(reply))) { |
| 71 | return JNI_FALSE; |
| 72 | } |
| 73 | return (strcmp(reply, "OK") == 0); |
| 74 | } |
| 75 | |
| 76 | // Send a command to the supplicant, and return the reply as a String. |
| 77 | static jstring doStringCommand(JNIEnv* env, jstring javaCommand) { |
| 78 | char reply[REPLY_BUF_SIZE]; |
| 79 | if (!doCommand(env, javaCommand, reply, sizeof(reply))) { |
| 80 | return NULL; |
| 81 | } |
| 82 | return env->NewStringUTF(reply); |
| 83 | } |
| 84 | |
| 85 | static jboolean android_net_wifi_isDriverLoaded(JNIEnv* env, jobject) |
| 86 | { |
| 87 | return (::is_wifi_driver_loaded() == 1); |
| 88 | } |
| 89 | |
| 90 | static jboolean android_net_wifi_loadDriver(JNIEnv* env, jobject) |
| 91 | { |
| 92 | return (::wifi_load_driver() == 0); |
| 93 | } |
| 94 | |
| 95 | static jboolean android_net_wifi_unloadDriver(JNIEnv* env, jobject) |
| 96 | { |
| 97 | return (::wifi_unload_driver() == 0); |
| 98 | } |
| 99 | |
| 100 | static jboolean android_net_wifi_startSupplicant(JNIEnv* env, jobject, jboolean p2pSupported) |
| 101 | { |
| 102 | return (::wifi_start_supplicant(p2pSupported) == 0); |
| 103 | } |
| 104 | |
| 105 | static jboolean android_net_wifi_killSupplicant(JNIEnv* env, jobject, jboolean p2pSupported) |
| 106 | { |
| 107 | return (::wifi_stop_supplicant(p2pSupported) == 0); |
| 108 | } |
| 109 | |
| 110 | static jboolean android_net_wifi_connectToSupplicant(JNIEnv* env, jobject) |
| 111 | { |
| 112 | return (::wifi_connect_to_supplicant() == 0); |
| 113 | } |
| 114 | |
| 115 | static void android_net_wifi_closeSupplicantConnection(JNIEnv* env, jobject) |
| 116 | { |
| 117 | ::wifi_close_supplicant_connection(); |
| 118 | } |
| 119 | |
| 120 | static jstring android_net_wifi_waitForEvent(JNIEnv* env, jobject) |
| 121 | { |
| 122 | char buf[EVENT_BUF_SIZE]; |
| 123 | int nread = ::wifi_wait_for_event(buf, sizeof buf); |
| 124 | if (nread > 0) { |
| 125 | return env->NewStringUTF(buf); |
| 126 | } else { |
| 127 | return NULL; |
| 128 | } |
| 129 | } |
| 130 | |
| 131 | static jboolean android_net_wifi_doBooleanCommand(JNIEnv* env, jobject, jstring javaCommand) { |
| 132 | return doBooleanCommand(env, javaCommand); |
| 133 | } |
| 134 | |
| 135 | static jint android_net_wifi_doIntCommand(JNIEnv* env, jobject, jstring javaCommand) { |
| 136 | return doIntCommand(env, javaCommand); |
| 137 | } |
| 138 | |
| 139 | static jstring android_net_wifi_doStringCommand(JNIEnv* env, jobject, jstring javaCommand) { |
| 140 | return doStringCommand(env,javaCommand); |
| 141 | } |
| 142 | |
| 143 | |
| 144 | |
| 145 | // ---------------------------------------------------------------------------- |
| 146 | |
| 147 | /* |
| 148 | * JNI registration. |
| 149 | */ |
| 150 | static JNINativeMethod gWifiMethods[] = { |
| 151 | /* name, signature, funcPtr */ |
| 152 | |
| 153 | { "loadDriver", "()Z", (void *)android_net_wifi_loadDriver }, |
| 154 | { "isDriverLoaded", "()Z", (void *)android_net_wifi_isDriverLoaded }, |
| 155 | { "unloadDriver", "()Z", (void *)android_net_wifi_unloadDriver }, |
| 156 | { "startSupplicant", "(Z)Z", (void *)android_net_wifi_startSupplicant }, |
| 157 | { "killSupplicant", "(Z)Z", (void *)android_net_wifi_killSupplicant }, |
| 158 | { "connectToSupplicantNative", "()Z", (void *)android_net_wifi_connectToSupplicant }, |
| 159 | { "closeSupplicantConnectionNative", "()V", |
| 160 | (void *)android_net_wifi_closeSupplicantConnection }, |
| 161 | { "waitForEventNative", "()Ljava/lang/String;", (void*)android_net_wifi_waitForEvent }, |
| 162 | { "doBooleanCommandNative", "(Ljava/lang/String;)Z", (void*)android_net_wifi_doBooleanCommand }, |
| 163 | { "doIntCommandNative", "(Ljava/lang/String;)I", (void*)android_net_wifi_doIntCommand }, |
| 164 | { "doStringCommandNative", "(Ljava/lang/String;)Ljava/lang/String;", |
| 165 | (void*) android_net_wifi_doStringCommand }, |
| 166 | }; |
| 167 | |
| 168 | int register_android_net_wifi_WifiNative(JNIEnv* env) { |
| 169 | return AndroidRuntime::registerNativeMethods(env, |
| 170 | "android/net/wifi/WifiNative", gWifiMethods, NELEM(gWifiMethods)); |
| 171 | } |
| 172 | |
| 173 | }; // namespace android |