Initial Contribution

1 files changed, 492 insertions, 0 deletions

diff --git a/core/jni/android_net_wifi_Wifi.cpp b/core/jni/android_net_wifi_Wifi.cpp
new file mode 100644
index 0000000..48af99e
--- /dev/null
+++ b/core/jni/android_net_wifi_Wifi.cpp
@@ -0,0 +1,492 @@
+/*
+ * 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 <utils/misc.h>
+#include <android_runtime/AndroidRuntime.h>
+#include <utils/Log.h>
+
+#include "wifi.h"
+
+#define WIFI_PKG_NAME "android/net/wifi/WifiNative"
+
+namespace android {
+
+/*
+ * The following remembers the jfieldID's of the fields
+ * of the DhcpInfo Java object, so that we don't have
+ * to look them up every time.
+ */
+static struct fieldIds {
+    jclass dhcpInfoClass;
+    jmethodID constructorId;
+    jfieldID ipaddress;
+    jfieldID gateway;
+    jfieldID netmask;
+    jfieldID dns1;
+    jfieldID dns2;
+    jfieldID serverAddress;
+    jfieldID leaseDuration;
+} dhcpInfoFieldIds;
+
+static int doCommand(const char *cmd, char *replybuf, int replybuflen)
+{
+    size_t reply_len = replybuflen - 1;
+
+    if (::wifi_command(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 *cmd)
+{
+    char reply[256];
+
+    if (doCommand(cmd, reply, sizeof(reply)) != 0) {
+        return (jint)-1;
+    } else {
+        return (jint)atoi(reply);
+    }
+}
+
+static jboolean doBooleanCommand(const char *cmd, const char *expect)
+{
+    char reply[256];
+
+    if (doCommand(cmd, reply, sizeof(reply)) != 0) {
+        return (jboolean)JNI_FALSE;
+    } else {
+        return (jboolean)(strcmp(reply, expect) == 0);
+    }
+}
+
+// Send a command to the supplicant, and return the reply as a String
+static jstring doStringCommand(JNIEnv *env, const char *cmd)
+{
+    char reply[4096];
+
+    if (doCommand(cmd, reply, sizeof(reply)) != 0) {
+        return env->NewStringUTF(NULL);
+    } else {
+        return env->NewStringUTF(reply);
+    }
+}
+
+static jboolean android_net_wifi_loadDriver(JNIEnv* env, jobject clazz)
+{
+    return (jboolean)(::wifi_load_driver() == 0);
+}
+
+static jboolean android_net_wifi_unloadDriver(JNIEnv* env, jobject clazz)
+{
+    return (jboolean)(::wifi_unload_driver() == 0);
+}
+
+static jboolean android_net_wifi_startSupplicant(JNIEnv* env, jobject clazz)
+{
+    return (jboolean)(::wifi_start_supplicant() == 0);
+}
+
+static jboolean android_net_wifi_stopSupplicant(JNIEnv* env, jobject clazz)
+{
+    return (jboolean)(::wifi_stop_supplicant() == 0);
+}
+
+static jboolean android_net_wifi_connectToSupplicant(JNIEnv* env, jobject clazz)
+{
+    return (jboolean)(::wifi_connect_to_supplicant() == 0);
+}
+
+static void android_net_wifi_closeSupplicantConnection(JNIEnv* env, jobject clazz)
+{
+    ::wifi_close_supplicant_connection();
+}
+
+static jstring android_net_wifi_waitForEvent(JNIEnv* env, jobject clazz)
+{
+    char buf[256];
+
+    int nread = ::wifi_wait_for_event(buf, sizeof buf);
+    if (nread > 0) {
+        return env->NewStringUTF(buf);
+    } else {
+        return  env->NewStringUTF(NULL);
+    }
+}
+
+static jstring android_net_wifi_listNetworksCommand(JNIEnv* env, jobject clazz)
+{
+    return doStringCommand(env, "LIST_NETWORKS");
+}
+
+static jint android_net_wifi_addNetworkCommand(JNIEnv* env, jobject clazz)
+{
+    return doIntCommand("ADD_NETWORK");
+}
+
+static jboolean android_net_wifi_setNetworkVariableCommand(JNIEnv* env,
+                                                           jobject clazz,
+                                                           jint netId,
+                                                           jstring name,
+                                                           jstring value)
+{
+    char cmdstr[256];
+    jboolean isCopy;
+
+    const char *nameStr = env->GetStringUTFChars(name, &isCopy);
+    const char *valueStr = env->GetStringUTFChars(value, &isCopy);
+
+    if (nameStr == NULL || valueStr == NULL)
+        return JNI_FALSE;
+
+    int cmdTooLong = snprintf(cmdstr, sizeof(cmdstr), "SET_NETWORK %d %s %s",
+                 netId, nameStr, valueStr) >= (int)sizeof(cmdstr);
+
+    env->ReleaseStringUTFChars(name, nameStr);
+    env->ReleaseStringUTFChars(value, valueStr);
+
+    return (jboolean)!cmdTooLong && doBooleanCommand(cmdstr, "OK");
+}
+
+static jstring android_net_wifi_getNetworkVariableCommand(JNIEnv* env,
+                                                          jobject clazz,
+                                                          jint netId,
+                                                          jstring name)
+{
+    char cmdstr[256];
+    jboolean isCopy;
+
+    const char *nameStr = env->GetStringUTFChars(name, &isCopy);
+
+    if (nameStr == NULL)
+        return env->NewStringUTF(NULL);
+
+    int cmdTooLong = snprintf(cmdstr, sizeof(cmdstr), "GET_NETWORK %d %s",
+                             netId, nameStr) >= (int)sizeof(cmdstr);
+
+    env->ReleaseStringUTFChars(name, nameStr);
+
+    return cmdTooLong ? env->NewStringUTF(NULL) : doStringCommand(env, cmdstr);
+}
+
+static jboolean android_net_wifi_removeNetworkCommand(JNIEnv* env, jobject clazz, jint netId)
+{
+    char cmdstr[256];
+
+    int numWritten = snprintf(cmdstr, sizeof(cmdstr), "REMOVE_NETWORK %d", netId);
+    int cmdTooLong = numWritten >= (int)sizeof(cmdstr);
+
+    return (jboolean)!cmdTooLong && doBooleanCommand(cmdstr, "OK");
+}
+
+static jboolean android_net_wifi_enableNetworkCommand(JNIEnv* env,
+                                                  jobject clazz,
+                                                  jint netId,
+                                                  jboolean disableOthers)
+{
+    char cmdstr[256];
+    const char *cmd = disableOthers ? "SELECT_NETWORK" : "ENABLE_NETWORK";
+
+    int numWritten = snprintf(cmdstr, sizeof(cmdstr), "%s %d", cmd, netId);
+    int cmdTooLong = numWritten >= (int)sizeof(cmdstr);
+
+    return (jboolean)!cmdTooLong && doBooleanCommand(cmdstr, "OK");
+}
+
+static jboolean android_net_wifi_disableNetworkCommand(JNIEnv* env, jobject clazz, jint netId)
+{
+    char cmdstr[256];
+
+    int numWritten = snprintf(cmdstr, sizeof(cmdstr), "DISABLE_NETWORK %d", netId);
+    int cmdTooLong = numWritten >= (int)sizeof(cmdstr);
+
+    return (jboolean)!cmdTooLong && doBooleanCommand(cmdstr, "OK");
+}
+
+static jstring android_net_wifi_statusCommand(JNIEnv* env, jobject clazz)
+{
+    return doStringCommand(env, "STATUS");
+}
+
+static jboolean android_net_wifi_pingCommand(JNIEnv* env, jobject clazz)
+{
+    return doBooleanCommand("PING", "PONG");
+}
+
+static jstring android_net_wifi_scanResultsCommand(JNIEnv* env, jobject clazz)
+{
+    return doStringCommand(env, "SCAN_RESULTS");
+}
+
+static jboolean android_net_wifi_disconnectCommand(JNIEnv* env, jobject clazz)
+{
+    return doBooleanCommand("DISCONNECT", "OK");
+}
+
+static jboolean android_net_wifi_reconnectCommand(JNIEnv* env, jobject clazz)
+{
+    return doBooleanCommand("RECONNECT", "OK");
+}
+static jboolean android_net_wifi_reassociateCommand(JNIEnv* env, jobject clazz)
+{
+    return doBooleanCommand("REASSOCIATE", "OK");
+}
+
+static jboolean android_net_wifi_scanCommand(JNIEnv* env, jobject clazz)
+{
+    jboolean result;
+    // Ignore any error from setting the scan mode.
+    // The scan will still work.
+    (void)doBooleanCommand("DRIVER SCAN-ACTIVE", "OK");
+    result = doBooleanCommand("SCAN", "OK");
+    (void)doBooleanCommand("DRIVER SCAN-PASSIVE", "OK");
+    return result;
+}
+
+static jboolean android_net_wifi_setScanModeCommand(JNIEnv* env, jobject clazz, jboolean setActive)
+{
+    jboolean result;
+    // Ignore any error from setting the scan mode.
+    // The scan will still work.
+    if (setActive) {
+        return doBooleanCommand("DRIVER SCAN-ACTIVE", "OK");
+    } else {
+        return doBooleanCommand("DRIVER SCAN-PASSIVE", "OK");
+    }
+}
+
+static jboolean android_net_wifi_startDriverCommand(JNIEnv* env, jobject clazz)
+{
+    return doBooleanCommand("DRIVER START", "OK");
+}
+
+static jboolean android_net_wifi_stopDriverCommand(JNIEnv* env, jobject clazz)
+{
+    return doBooleanCommand("DRIVER STOP", "OK");
+}
+
+static jint android_net_wifi_getRssiCommand(JNIEnv* env, jobject clazz)
+{
+    char reply[256];
+    int rssi = -200;
+
+    if (doCommand("DRIVER RSSI", reply, sizeof(reply)) != 0) {
+        return (jint)-1;
+    }
+    // reply comes back in the form "<SSID> rssi XX" where XX is the
+    // number we're interested in.  if we're associating, it returns "OK".
+    if (strcmp(reply, "OK") != 0) {
+    	sscanf(reply, "%*s %*s %d", &rssi);
+    }
+    return (jint)rssi;
+}
+
+static jint android_net_wifi_getLinkSpeedCommand(JNIEnv* env, jobject clazz)
+{
+    char reply[256];
+    int linkspeed;
+
+    if (doCommand("DRIVER LINKSPEED", reply, sizeof(reply)) != 0) {
+        return (jint)-1;
+    }
+    // reply comes back in the form "LinkSpeed XX" where XX is the
+    // number we're interested in.
+    sscanf(reply, "%*s %u", &linkspeed);
+    return (jint)linkspeed;
+}
+
+static jstring android_net_wifi_getMacAddressCommand(JNIEnv* env, jobject clazz)
+{
+    char reply[256];
+    char buf[256];
+
+    if (doCommand("DRIVER MACADDR", reply, sizeof(reply)) != 0) {
+        return env->NewStringUTF(NULL);
+    }
+    // reply comes back in the form "Macaddr = XX.XX.XX.XX.XX.XX" where XX
+    // is the part of the string we're interested in.
+    if (sscanf(reply, "%*s = %255s", buf) == 1)
+        return env->NewStringUTF(buf);
+    else
+        return env->NewStringUTF(NULL);
+}
+
+static jboolean android_net_wifi_setPowerModeCommand(JNIEnv* env, jobject clazz, jint mode)
+{
+    char cmdstr[256];
+
+    int numWritten = snprintf(cmdstr, sizeof(cmdstr), "DRIVER POWERMODE %d", mode);
+    int cmdTooLong = numWritten >= (int)sizeof(cmdstr);
+
+    return (jboolean)!cmdTooLong && doBooleanCommand(cmdstr, "OK");
+}
+
+static jboolean android_net_wifi_setBluetoothCoexistenceModeCommand(JNIEnv* env, jobject clazz, jint mode)
+{
+    char cmdstr[256];
+
+    int numWritten = snprintf(cmdstr, sizeof(cmdstr), "DRIVER BTCOEXMODE %d", mode);
+    int cmdTooLong = numWritten >= (int)sizeof(cmdstr);
+
+    return (jboolean)!cmdTooLong && doBooleanCommand(cmdstr, "OK");
+}
+
+static jboolean android_net_wifi_saveConfigCommand(JNIEnv* env, jobject clazz)
+{
+    // Make sure we never write out a value for AP_SCAN other than 1
+    (void)doBooleanCommand("AP_SCAN 1", "OK");
+    return doBooleanCommand("SAVE_CONFIG", "OK");
+}
+
+static jboolean android_net_wifi_reloadConfigCommand(JNIEnv* env, jobject clazz)
+{
+    return doBooleanCommand("RECONFIGURE", "OK");
+}
+
+static jboolean android_net_wifi_setScanResultHandlingCommand(JNIEnv* env, jobject clazz, jint mode)
+{
+    char cmdstr[256];
+
+    int numWritten = snprintf(cmdstr, sizeof(cmdstr), "AP_SCAN %d", mode);
+    int cmdTooLong = numWritten >= (int)sizeof(cmdstr);
+
+    return (jboolean)!cmdTooLong && doBooleanCommand(cmdstr, "OK");
+}
+
+static jboolean android_net_wifi_addToBlacklistCommand(JNIEnv* env, jobject clazz, jstring bssid)
+{
+    char cmdstr[256];
+    jboolean isCopy;
+
+    const char *bssidStr = env->GetStringUTFChars(bssid, &isCopy);
+
+    int cmdTooLong = snprintf(cmdstr, sizeof(cmdstr), "BLACKLIST %s", bssidStr) >= sizeof(cmdstr);
+
+    env->ReleaseStringUTFChars(bssid, bssidStr);
+
+    return (jboolean)!cmdTooLong && doBooleanCommand(cmdstr, "OK");
+}
+
+static jboolean android_net_wifi_clearBlacklistCommand(JNIEnv* env, jobject clazz)
+{
+    return doBooleanCommand("BLACKLIST clear", "OK");
+}
+
+static jboolean android_net_wifi_doDhcpRequest(JNIEnv* env, jobject clazz, jobject info)
+{
+    jint ipaddr, gateway, mask, dns1, dns2, server, lease;
+    jboolean succeeded = ((jboolean)::do_dhcp_request(&ipaddr, &gateway, &mask,
+                                        &dns1, &dns2, &server, &lease) == 0);
+    if (succeeded && dhcpInfoFieldIds.dhcpInfoClass != NULL) {
+        env->SetIntField(info, dhcpInfoFieldIds.ipaddress, ipaddr);
+        env->SetIntField(info, dhcpInfoFieldIds.gateway, gateway);
+        env->SetIntField(info, dhcpInfoFieldIds.netmask, mask);
+        env->SetIntField(info, dhcpInfoFieldIds.dns1, dns1);
+        env->SetIntField(info, dhcpInfoFieldIds.dns2, dns2);
+        env->SetIntField(info, dhcpInfoFieldIds.serverAddress, server);
+        env->SetIntField(info, dhcpInfoFieldIds.leaseDuration, lease);
+    }
+    return succeeded;
+}
+
+static jstring android_net_wifi_getDhcpError(JNIEnv* env, jobject clazz)
+{
+    return env->NewStringUTF(::get_dhcp_error_string());
+}
+
+// ----------------------------------------------------------------------------
+
+/*
+ * JNI registration.
+ */
+static JNINativeMethod gWifiMethods[] = {
+    /* name, signature, funcPtr */
+
+    { "loadDriver", "()Z",  (void *)android_net_wifi_loadDriver },
+    { "unloadDriver", "()Z",  (void *)android_net_wifi_unloadDriver },
+    { "startSupplicant", "()Z",  (void *)android_net_wifi_startSupplicant },
+    { "stopSupplicant", "()Z",  (void *)android_net_wifi_stopSupplicant },
+    { "connectToSupplicant", "()Z",  (void *)android_net_wifi_connectToSupplicant },
+    { "closeSupplicantConnection", "()V",  (void *)android_net_wifi_closeSupplicantConnection },
+
+    { "listNetworksCommand", "()Ljava/lang/String;",
+        (void*) android_net_wifi_listNetworksCommand },
+    { "addNetworkCommand", "()I", (void*) android_net_wifi_addNetworkCommand },
+    { "setNetworkVariableCommand", "(ILjava/lang/String;Ljava/lang/String;)Z",
+        (void*) android_net_wifi_setNetworkVariableCommand },
+    { "getNetworkVariableCommand", "(ILjava/lang/String;)Ljava/lang/String;",
+        (void*) android_net_wifi_getNetworkVariableCommand },
+    { "removeNetworkCommand", "(I)Z", (void*) android_net_wifi_removeNetworkCommand },
+    { "enableNetworkCommand", "(IZ)Z", (void*) android_net_wifi_enableNetworkCommand },
+    { "disableNetworkCommand", "(I)Z", (void*) android_net_wifi_disableNetworkCommand },
+    { "waitForEvent", "()Ljava/lang/String;", (void*) android_net_wifi_waitForEvent },
+    { "statusCommand", "()Ljava/lang/String;", (void*) android_net_wifi_statusCommand },
+    { "scanResultsCommand", "()Ljava/lang/String;", (void*) android_net_wifi_scanResultsCommand },
+    { "pingCommand", "()Z",  (void *)android_net_wifi_pingCommand },
+    { "disconnectCommand", "()Z",  (void *)android_net_wifi_disconnectCommand },
+    { "reconnectCommand", "()Z",  (void *)android_net_wifi_reconnectCommand },
+    { "reassociateCommand", "()Z",  (void *)android_net_wifi_reassociateCommand },
+    { "scanCommand", "()Z", (void*) android_net_wifi_scanCommand },
+    { "setScanModeCommand", "(Z)Z", (void*) android_net_wifi_setScanModeCommand },
+    { "startDriverCommand", "()Z", (void*) android_net_wifi_startDriverCommand },
+    { "stopDriverCommand", "()Z", (void*) android_net_wifi_stopDriverCommand },
+    { "setPowerModeCommand", "(I)Z", (void*) android_net_wifi_setPowerModeCommand },
+    { "setBluetoothCoexistenceModeCommand", "(I)Z",
+    		(void*) android_net_wifi_setBluetoothCoexistenceModeCommand },
+    { "getRssiCommand", "()I", (void*) android_net_wifi_getRssiCommand },
+    { "getLinkSpeedCommand", "()I", (void*) android_net_wifi_getLinkSpeedCommand },
+    { "getMacAddressCommand", "()Ljava/lang/String;", (void*) android_net_wifi_getMacAddressCommand },
+    { "saveConfigCommand", "()Z", (void*) android_net_wifi_saveConfigCommand },
+    { "reloadConfigCommand", "()Z", (void*) android_net_wifi_reloadConfigCommand },
+    { "setScanResultHandlingCommand", "(I)Z", (void*) android_net_wifi_setScanResultHandlingCommand },
+    { "addToBlacklistCommand", "(Ljava/lang/String;)Z", (void*) android_net_wifi_addToBlacklistCommand },
+    { "clearBlacklistCommand", "()Z", (void*) android_net_wifi_clearBlacklistCommand },
+
+    { "doDhcpRequest", "(Landroid/net/DhcpInfo;)Z", (void*) android_net_wifi_doDhcpRequest },
+    { "getDhcpError", "()Ljava/lang/String;", (void*) android_net_wifi_getDhcpError },
+};
+
+int register_android_net_wifi_WifiManager(JNIEnv* env)
+{
+    jclass wifi = env->FindClass(WIFI_PKG_NAME);
+    LOG_FATAL_IF(wifi == NULL, "Unable to find class " WIFI_PKG_NAME);
+
+    dhcpInfoFieldIds.dhcpInfoClass = env->FindClass("android/net/DhcpInfo");
+    if (dhcpInfoFieldIds.dhcpInfoClass != NULL) {
+        dhcpInfoFieldIds.constructorId = env->GetMethodID(dhcpInfoFieldIds.dhcpInfoClass, "<init>", "()V");
+        dhcpInfoFieldIds.ipaddress = env->GetFieldID(dhcpInfoFieldIds.dhcpInfoClass, "ipAddress", "I");
+        dhcpInfoFieldIds.gateway = env->GetFieldID(dhcpInfoFieldIds.dhcpInfoClass, "gateway", "I");
+        dhcpInfoFieldIds.netmask = env->GetFieldID(dhcpInfoFieldIds.dhcpInfoClass, "netmask", "I");
+        dhcpInfoFieldIds.dns1 = env->GetFieldID(dhcpInfoFieldIds.dhcpInfoClass, "dns1", "I");
+        dhcpInfoFieldIds.dns2 = env->GetFieldID(dhcpInfoFieldIds.dhcpInfoClass, "dns2", "I");
+        dhcpInfoFieldIds.serverAddress = env->GetFieldID(dhcpInfoFieldIds.dhcpInfoClass, "serverAddress", "I");
+        dhcpInfoFieldIds.leaseDuration = env->GetFieldID(dhcpInfoFieldIds.dhcpInfoClass, "leaseDuration", "I");
+    }
+
+    return AndroidRuntime::registerNativeMethods(env,
+            WIFI_PKG_NAME, gWifiMethods, NELEM(gWifiMethods));
+}
+
+}; // namespace android