mirror of
https://github.com/vanhoefm/fragattacks.git
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f1a5a34d8e
This commit implements the methods defined in Supplicant service: 1. CreateInterface 2. RemoveInterface 3. GetInterface The binder service returns the corresponding iface binder object references which can be used by clients to control a specific interface. Signed-off-by: Roshan Pius <rpius@google.com>
126 lines
4.3 KiB
C++
126 lines
4.3 KiB
C++
/*
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* binder interface for wpa_supplicant daemon
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* Copyright (c) 2004-2016, Jouni Malinen <j@w1.fi>
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* Copyright (c) 2004-2016, Roshan Pius <rpius@google.com>
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*
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* This software may be distributed under the terms of the BSD license.
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* See README for more details.
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*/
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#include "binder_manager.h"
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#include "supplicant.h"
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namespace wpa_supplicant_binder {
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Supplicant::Supplicant(struct wpa_global *global)
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: wpa_global_(global)
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{
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}
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android::binder::Status Supplicant::CreateInterface(
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const android::os::PersistableBundle ¶ms,
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android::sp<fi::w1::wpa_supplicant::IIface> *aidl_return)
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{
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android::String16 driver, ifname, confname, bridge_ifname;
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/* Check if required Ifname argument is missing */
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if (!params.getString(android::String16("Ifname"), &ifname))
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return android::binder::Status::fromServiceSpecificError(
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ERROR_INVALID_ARGS,
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android::String8("Ifname missing in params."));
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/* Retrieve the remaining params from the dictionary */
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params.getString(android::String16("Driver"), &driver);
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params.getString(android::String16("ConfigFile"), &confname);
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params.getString(android::String16("BridgeIfname"), &bridge_ifname);
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/*
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* Try to get the wpa_supplicant record for this iface, return
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* an error if we already control it.
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*/
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if (wpa_supplicant_get_iface(wpa_global_,
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android::String8(ifname).string()) != NULL)
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return android::binder::Status::fromServiceSpecificError(
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ERROR_IFACE_EXISTS,
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android::String8("wpa_supplicant already controls this interface."));
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android::binder::Status status;
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struct wpa_supplicant *wpa_s = NULL;
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struct wpa_interface iface;
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os_memset(&iface, 0, sizeof(iface));
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iface.driver = os_strdup(android::String8(driver).string());
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iface.ifname = os_strdup(android::String8(ifname).string());
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iface.confname = os_strdup(android::String8(confname).string());
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iface.bridge_ifname = os_strdup(
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android::String8(bridge_ifname).string());
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/* Otherwise, have wpa_supplicant attach to it. */
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wpa_s = wpa_supplicant_add_iface(wpa_global_, &iface, NULL);
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/* The supplicant core creates a corresponding binder object via
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* BinderManager when |wpa_supplicant_add_iface| is called. */
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if (!wpa_s || !wpa_s->binder_object_key) {
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status = android::binder::Status::fromServiceSpecificError(
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ERROR_UNKNOWN,
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android::String8("wpa_supplicant couldn't grab this interface."));
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} else {
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BinderManager *binder_manager = BinderManager::getInstance();
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if (!binder_manager ||
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binder_manager->getIfaceBinderObjectByKey(
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wpa_s->binder_object_key, aidl_return))
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status = android::binder::Status::fromServiceSpecificError(
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ERROR_UNKNOWN,
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android::String8("wpa_supplicant encountered a binder error."));
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else
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status = android::binder::Status::ok();
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}
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os_free((void *) iface.driver);
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os_free((void *) iface.ifname);
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os_free((void *) iface.confname);
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os_free((void *) iface.bridge_ifname);
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return status;
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}
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android::binder::Status Supplicant::RemoveInterface(const std::string &ifname)
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{
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struct wpa_supplicant *wpa_s;
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wpa_s = wpa_supplicant_get_iface(wpa_global_, ifname.c_str());
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if (!wpa_s || !wpa_s->binder_object_key)
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return android::binder::Status::fromServiceSpecificError(
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ERROR_IFACE_UNKNOWN,
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android::String8("wpa_supplicant does not control this interface."));
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if (wpa_supplicant_remove_iface(wpa_global_, wpa_s, 0))
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return android::binder::Status::fromServiceSpecificError(
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ERROR_UNKNOWN,
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android::String8("wpa_supplicant couldn't remove this interface."));
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return android::binder::Status::ok();
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}
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android::binder::Status Supplicant::GetInterface(
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const std::string &ifname,
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android::sp<fi::w1::wpa_supplicant::IIface> *aidl_return)
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{
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struct wpa_supplicant *wpa_s;
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wpa_s = wpa_supplicant_get_iface(wpa_global_, ifname.c_str());
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if (!wpa_s || !wpa_s->binder_object_key)
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return android::binder::Status::fromServiceSpecificError(
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ERROR_IFACE_UNKNOWN,
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android::String8("wpa_supplicant does not control this interface."));
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BinderManager *binder_manager = BinderManager::getInstance();
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if (!binder_manager ||
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binder_manager->getIfaceBinderObjectByKey(wpa_s->binder_object_key,
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aidl_return))
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return android::binder::Status::fromServiceSpecificError(
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ERROR_UNKNOWN,
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android::String8("wpa_supplicant encountered a binder error."));
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return android::binder::Status::ok();
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}
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} /* namespace wpa_supplicant_binder */
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