Dmitry Shmidt | e466304 | 2016-04-04 10:07:49 -0700 | [diff] [blame] | 1 | /* |
| 2 | * binder interface for wpa_supplicant daemon |
| 3 | * Copyright (c) 2004-2016, Jouni Malinen <j@w1.fi> |
| 4 | * Copyright (c) 2004-2016, Roshan Pius <rpius@google.com> |
| 5 | * |
| 6 | * This software may be distributed under the terms of the BSD license. |
| 7 | * See README for more details. |
| 8 | */ |
| 9 | |
Dmitry Shmidt | e466304 | 2016-04-04 10:07:49 -0700 | [diff] [blame] | 10 | #include "supplicant.h" |
Dmitry Shmidt | 7f2c753 | 2016-08-15 09:48:12 -0700 | [diff] [blame] | 11 | #include "binder_manager.h" |
Dmitry Shmidt | e466304 | 2016-04-04 10:07:49 -0700 | [diff] [blame] | 12 | |
| 13 | namespace wpa_supplicant_binder { |
| 14 | |
Dmitry Shmidt | 7f2c753 | 2016-08-15 09:48:12 -0700 | [diff] [blame] | 15 | Supplicant::Supplicant(struct wpa_global *global) : wpa_global_(global) {} |
Dmitry Shmidt | e466304 | 2016-04-04 10:07:49 -0700 | [diff] [blame] | 16 | |
| 17 | android::binder::Status Supplicant::CreateInterface( |
Dmitry Shmidt | 7f2c753 | 2016-08-15 09:48:12 -0700 | [diff] [blame] | 18 | const android::os::PersistableBundle ¶ms, |
| 19 | android::sp<fi::w1::wpa_supplicant::IIface> *aidl_return) |
Dmitry Shmidt | e466304 | 2016-04-04 10:07:49 -0700 | [diff] [blame] | 20 | { |
| 21 | android::String16 driver, ifname, confname, bridge_ifname; |
| 22 | |
| 23 | /* Check if required Ifname argument is missing */ |
| 24 | if (!params.getString(android::String16("Ifname"), &ifname)) |
Roshan Pius | d6e3751 | 2016-07-07 13:20:46 -0700 | [diff] [blame^] | 25 | return android::binder::Status::fromExceptionCode( |
| 26 | android::binder::Status::EX_ILLEGAL_ARGUMENT, |
| 27 | "Ifname missing in params."); |
Dmitry Shmidt | e466304 | 2016-04-04 10:07:49 -0700 | [diff] [blame] | 28 | /* Retrieve the remaining params from the dictionary */ |
| 29 | params.getString(android::String16("Driver"), &driver); |
| 30 | params.getString(android::String16("ConfigFile"), &confname); |
| 31 | params.getString(android::String16("BridgeIfname"), &bridge_ifname); |
| 32 | |
| 33 | /* |
| 34 | * Try to get the wpa_supplicant record for this iface, return |
| 35 | * an error if we already control it. |
| 36 | */ |
Dmitry Shmidt | 7f2c753 | 2016-08-15 09:48:12 -0700 | [diff] [blame] | 37 | if (wpa_supplicant_get_iface( |
| 38 | wpa_global_, android::String8(ifname).string()) != NULL) |
Dmitry Shmidt | e466304 | 2016-04-04 10:07:49 -0700 | [diff] [blame] | 39 | return android::binder::Status::fromServiceSpecificError( |
Dmitry Shmidt | 7f2c753 | 2016-08-15 09:48:12 -0700 | [diff] [blame] | 40 | ERROR_IFACE_EXISTS, |
Roshan Pius | d6e3751 | 2016-07-07 13:20:46 -0700 | [diff] [blame^] | 41 | "wpa_supplicant already controls this interface."); |
Dmitry Shmidt | e466304 | 2016-04-04 10:07:49 -0700 | [diff] [blame] | 42 | |
| 43 | android::binder::Status status; |
| 44 | struct wpa_supplicant *wpa_s = NULL; |
| 45 | struct wpa_interface iface; |
| 46 | |
| 47 | os_memset(&iface, 0, sizeof(iface)); |
| 48 | iface.driver = os_strdup(android::String8(driver).string()); |
| 49 | iface.ifname = os_strdup(android::String8(ifname).string()); |
| 50 | iface.confname = os_strdup(android::String8(confname).string()); |
Dmitry Shmidt | 7f2c753 | 2016-08-15 09:48:12 -0700 | [diff] [blame] | 51 | iface.bridge_ifname = |
| 52 | os_strdup(android::String8(bridge_ifname).string()); |
Dmitry Shmidt | e466304 | 2016-04-04 10:07:49 -0700 | [diff] [blame] | 53 | /* Otherwise, have wpa_supplicant attach to it. */ |
| 54 | wpa_s = wpa_supplicant_add_iface(wpa_global_, &iface, NULL); |
| 55 | /* The supplicant core creates a corresponding binder object via |
| 56 | * BinderManager when |wpa_supplicant_add_iface| is called. */ |
| 57 | if (!wpa_s || !wpa_s->binder_object_key) { |
| 58 | status = android::binder::Status::fromServiceSpecificError( |
Roshan Pius | d6e3751 | 2016-07-07 13:20:46 -0700 | [diff] [blame^] | 59 | ERROR_GENERIC, |
| 60 | "wpa_supplicant couldn't grab this interface."); |
Dmitry Shmidt | e466304 | 2016-04-04 10:07:49 -0700 | [diff] [blame] | 61 | } else { |
| 62 | BinderManager *binder_manager = BinderManager::getInstance(); |
| 63 | |
| 64 | if (!binder_manager || |
| 65 | binder_manager->getIfaceBinderObjectByKey( |
Dmitry Shmidt | 7f2c753 | 2016-08-15 09:48:12 -0700 | [diff] [blame] | 66 | wpa_s->binder_object_key, aidl_return)) |
| 67 | status = |
| 68 | android::binder::Status::fromServiceSpecificError( |
Roshan Pius | d6e3751 | 2016-07-07 13:20:46 -0700 | [diff] [blame^] | 69 | ERROR_GENERIC, |
| 70 | "wpa_supplicant encountered a binder error."); |
Dmitry Shmidt | e466304 | 2016-04-04 10:07:49 -0700 | [diff] [blame] | 71 | else |
| 72 | status = android::binder::Status::ok(); |
| 73 | } |
Dmitry Shmidt | 7f2c753 | 2016-08-15 09:48:12 -0700 | [diff] [blame] | 74 | os_free((void *)iface.driver); |
| 75 | os_free((void *)iface.ifname); |
| 76 | os_free((void *)iface.confname); |
| 77 | os_free((void *)iface.bridge_ifname); |
Dmitry Shmidt | e466304 | 2016-04-04 10:07:49 -0700 | [diff] [blame] | 78 | return status; |
| 79 | } |
| 80 | |
Dmitry Shmidt | e466304 | 2016-04-04 10:07:49 -0700 | [diff] [blame] | 81 | android::binder::Status Supplicant::RemoveInterface(const std::string &ifname) |
| 82 | { |
| 83 | struct wpa_supplicant *wpa_s; |
| 84 | |
| 85 | wpa_s = wpa_supplicant_get_iface(wpa_global_, ifname.c_str()); |
| 86 | if (!wpa_s || !wpa_s->binder_object_key) |
| 87 | return android::binder::Status::fromServiceSpecificError( |
Dmitry Shmidt | 7f2c753 | 2016-08-15 09:48:12 -0700 | [diff] [blame] | 88 | ERROR_IFACE_UNKNOWN, |
Roshan Pius | d6e3751 | 2016-07-07 13:20:46 -0700 | [diff] [blame^] | 89 | "wpa_supplicant does not control this interface."); |
Dmitry Shmidt | e466304 | 2016-04-04 10:07:49 -0700 | [diff] [blame] | 90 | if (wpa_supplicant_remove_iface(wpa_global_, wpa_s, 0)) |
| 91 | return android::binder::Status::fromServiceSpecificError( |
Roshan Pius | d6e3751 | 2016-07-07 13:20:46 -0700 | [diff] [blame^] | 92 | ERROR_GENERIC, |
| 93 | "wpa_supplicant couldn't remove this interface."); |
Dmitry Shmidt | e466304 | 2016-04-04 10:07:49 -0700 | [diff] [blame] | 94 | return android::binder::Status::ok(); |
| 95 | } |
| 96 | |
Dmitry Shmidt | e466304 | 2016-04-04 10:07:49 -0700 | [diff] [blame] | 97 | android::binder::Status Supplicant::GetInterface( |
Dmitry Shmidt | 7f2c753 | 2016-08-15 09:48:12 -0700 | [diff] [blame] | 98 | const std::string &ifname, |
| 99 | android::sp<fi::w1::wpa_supplicant::IIface> *aidl_return) |
Dmitry Shmidt | e466304 | 2016-04-04 10:07:49 -0700 | [diff] [blame] | 100 | { |
| 101 | struct wpa_supplicant *wpa_s; |
| 102 | |
| 103 | wpa_s = wpa_supplicant_get_iface(wpa_global_, ifname.c_str()); |
| 104 | if (!wpa_s || !wpa_s->binder_object_key) |
| 105 | return android::binder::Status::fromServiceSpecificError( |
Dmitry Shmidt | 7f2c753 | 2016-08-15 09:48:12 -0700 | [diff] [blame] | 106 | ERROR_IFACE_UNKNOWN, |
Roshan Pius | d6e3751 | 2016-07-07 13:20:46 -0700 | [diff] [blame^] | 107 | "wpa_supplicant does not control this interface."); |
Dmitry Shmidt | e466304 | 2016-04-04 10:07:49 -0700 | [diff] [blame] | 108 | |
| 109 | BinderManager *binder_manager = BinderManager::getInstance(); |
| 110 | if (!binder_manager || |
Dmitry Shmidt | 7f2c753 | 2016-08-15 09:48:12 -0700 | [diff] [blame] | 111 | binder_manager->getIfaceBinderObjectByKey( |
| 112 | wpa_s->binder_object_key, aidl_return)) |
Dmitry Shmidt | e466304 | 2016-04-04 10:07:49 -0700 | [diff] [blame] | 113 | return android::binder::Status::fromServiceSpecificError( |
Roshan Pius | d6e3751 | 2016-07-07 13:20:46 -0700 | [diff] [blame^] | 114 | ERROR_GENERIC, |
| 115 | "wpa_supplicant encountered a binder error."); |
Dmitry Shmidt | e466304 | 2016-04-04 10:07:49 -0700 | [diff] [blame] | 116 | |
| 117 | return android::binder::Status::ok(); |
| 118 | } |
| 119 | |
| 120 | } /* namespace wpa_supplicant_binder */ |