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author | The Android Open Source Project <initial-contribution@android.com> | 2008-10-21 07:00:00 -0700 |
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committer | The Android Open Source Project <initial-contribution@android.com> | 2008-10-21 07:00:00 -0700 |
commit | 54b6cfa9a9e5b861a9930af873580d6dc20f773c (patch) | |
tree | 35051494d2af230dce54d6b31c6af8fc24091316 /core/jni/android_net_wifi_Wifi.cpp | |
download | frameworks_base-54b6cfa9a9e5b861a9930af873580d6dc20f773c.zip frameworks_base-54b6cfa9a9e5b861a9930af873580d6dc20f773c.tar.gz frameworks_base-54b6cfa9a9e5b861a9930af873580d6dc20f773c.tar.bz2 |
Initial Contribution
Diffstat (limited to 'core/jni/android_net_wifi_Wifi.cpp')
-rw-r--r-- | core/jni/android_net_wifi_Wifi.cpp | 492 |
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 |