/* * binder interface for wpa_supplicant daemon * Copyright (c) 2004-2016, Jouni Malinen <j@w1.fi> * Copyright (c) 2004-2016, Roshan Pius <rpius@google.com> * * This software may be distributed under the terms of the BSD license. * See README for more details. */ #include "supplicant.h" #include "binder_manager.h" namespace wpa_supplicant_binder { Supplicant::Supplicant(struct wpa_global *global) : wpa_global_(global) {} android::binder::Status Supplicant::CreateInterface( const android::os::PersistableBundle ¶ms, android::sp<fi::w1::wpa_supplicant::IIface> *aidl_return) { android::String16 driver, ifname, confname, bridge_ifname; /* Check if required Ifname argument is missing */ if (!params.getString(android::String16("Ifname"), &ifname)) return android::binder::Status::fromServiceSpecificError( ERROR_INVALID_ARGS, android::String8("Ifname missing in params.")); /* Retrieve the remaining params from the dictionary */ params.getString(android::String16("Driver"), &driver); params.getString(android::String16("ConfigFile"), &confname); params.getString(android::String16("BridgeIfname"), &bridge_ifname); /* * Try to get the wpa_supplicant record for this iface, return * an error if we already control it. */ if (wpa_supplicant_get_iface( wpa_global_, android::String8(ifname).string()) != NULL) return android::binder::Status::fromServiceSpecificError( ERROR_IFACE_EXISTS, android::String8("wpa_supplicant already controls this " "interface.")); android::binder::Status status; struct wpa_supplicant *wpa_s = NULL; struct wpa_interface iface; os_memset(&iface, 0, sizeof(iface)); iface.driver = os_strdup(android::String8(driver).string()); iface.ifname = os_strdup(android::String8(ifname).string()); iface.confname = os_strdup(android::String8(confname).string()); iface.bridge_ifname = os_strdup(android::String8(bridge_ifname).string()); /* Otherwise, have wpa_supplicant attach to it. */ wpa_s = wpa_supplicant_add_iface(wpa_global_, &iface, NULL); /* The supplicant core creates a corresponding binder object via * BinderManager when |wpa_supplicant_add_iface| is called. */ if (!wpa_s || !wpa_s->binder_object_key) { status = android::binder::Status::fromServiceSpecificError( ERROR_UNKNOWN, android::String8( "wpa_supplicant couldn't grab this interface.")); } else { BinderManager *binder_manager = BinderManager::getInstance(); if (!binder_manager || binder_manager->getIfaceBinderObjectByKey( wpa_s->binder_object_key, aidl_return)) status = android::binder::Status::fromServiceSpecificError( ERROR_UNKNOWN, android::String8("wpa_supplicant encountered a " "binder error.")); else status = android::binder::Status::ok(); } os_free((void *)iface.driver); os_free((void *)iface.ifname); os_free((void *)iface.confname); os_free((void *)iface.bridge_ifname); return status; } android::binder::Status Supplicant::RemoveInterface(const std::string &ifname) { struct wpa_supplicant *wpa_s; wpa_s = wpa_supplicant_get_iface(wpa_global_, ifname.c_str()); if (!wpa_s || !wpa_s->binder_object_key) return android::binder::Status::fromServiceSpecificError( ERROR_IFACE_UNKNOWN, android::String8("wpa_supplicant does not control this " "interface.")); if (wpa_supplicant_remove_iface(wpa_global_, wpa_s, 0)) return android::binder::Status::fromServiceSpecificError( ERROR_UNKNOWN, android::String8( "wpa_supplicant couldn't remove this interface.")); return android::binder::Status::ok(); } android::binder::Status Supplicant::GetInterface( const std::string &ifname, android::sp<fi::w1::wpa_supplicant::IIface> *aidl_return) { struct wpa_supplicant *wpa_s; wpa_s = wpa_supplicant_get_iface(wpa_global_, ifname.c_str()); if (!wpa_s || !wpa_s->binder_object_key) return android::binder::Status::fromServiceSpecificError( ERROR_IFACE_UNKNOWN, android::String8( "wpa_supplicant does not control this interface.")); BinderManager *binder_manager = BinderManager::getInstance(); if (!binder_manager || binder_manager->getIfaceBinderObjectByKey( wpa_s->binder_object_key, aidl_return)) return android::binder::Status::fromServiceSpecificError( ERROR_UNKNOWN, android::String8( "wpa_supplicant encountered a binder error.")); return android::binder::Status::ok(); } } /* namespace wpa_supplicant_binder */