blob: 25200e9dd04fd47883309e5822ef9f3430b3ba95 [file] [log] [blame]
/*
* Copyright (C) 2012 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.
*/
#include <stdlib.h>
#include <errno.h>
#include <fcntl.h>
#include <string.h>
#include <dlfcn.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#define LOG_TAG "InterfaceController"
#include <cutils/log.h>
#include <netutils/ifc.h>
#include <private/android_filesystem_config.h>
#include "InterfaceController.h"
char if_cmd_lib_file_name[] = "/system/lib/libnetcmdiface.so";
char set_cmd_func_name[] = "net_iface_send_command";
char set_cmd_init_func_name[] = "net_iface_send_command_init";
char set_cmd_fini_func_name[] = "net_iface_send_command_fini";
InterfaceController::InterfaceController()
: sendCommand_(NULL) {
libh_ = dlopen(if_cmd_lib_file_name, RTLD_NOW | RTLD_LOCAL);
if (libh_ == NULL) {
const char *err_str = dlerror();
ALOGE("Error (%s) while opening the net interface command library", err_str ? err_str : "unknown");
} else {
sendCommandInit_ = (int (*)(void))dlsym(libh_, set_cmd_init_func_name);
if (sendCommandInit_ == NULL) {
const char *err_str = dlerror();
ALOGW("Error (%s) while searching for the interface command init function", err_str ? err_str : "unknown");
} else if (sendCommandInit_()) {
ALOGE("Can't init the interface command API");
return;
}
sendCommandFini_ = (int (*)(void))dlsym(libh_, set_cmd_fini_func_name);
if (sendCommandFini_ == NULL) {
const char *err_str = dlerror();
ALOGW("Error (%s) while searching for the interface command fini function", err_str ? err_str : "unknown");
}
sendCommand_ = (int (*)(int, char **, char **))dlsym(libh_, set_cmd_func_name);
if (sendCommand_ == NULL) {
const char *err_str = dlerror();
ALOGE("Error (%s) while searching for the interface command function", err_str ? err_str : "unknown");
return;
}
}
}
InterfaceController::~InterfaceController() {
if (sendCommandFini_) {
if (sendCommandFini_()) {
ALOGE("Can't shutdown the interface command API");
}
}
if (libh_) {
int err = dlclose(libh_);
if (err) {
const char *err_str = dlerror();
ALOGE("Error (%s) while closing the net interface command library", err_str ? err_str : "unknown");
}
}
}
/*
* Arguments:
* argv[2] - wlan interface
* argv[3] - command
* argv[4] - argument
* rbuf - returned buffer
*/
int InterfaceController::interfaceCommand(int argc, char *argv[], char **rbuf) {
int ret = -ENOSYS;
if (sendCommand_)
ret = sendCommand_(argc, argv, rbuf);
return ret;
}