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 | |
Roshan Pius | d385445 | 2016-07-07 16:46:41 -0700 | [diff] [blame] | 10 | #include "binder_manager.h" |
Dmitry Shmidt | e466304 | 2016-04-04 10:07:49 -0700 | [diff] [blame] | 11 | #include "iface.h" |
| 12 | |
| 13 | namespace wpa_supplicant_binder { |
| 14 | |
Roshan Pius | 8702ba9 | 2016-07-25 15:29:39 -0700 | [diff] [blame^] | 15 | #define RETURN_IF_IFACE_INVALID(wpa_s) \ |
| 16 | { \ |
| 17 | if (!wpa_s) { \ |
| 18 | return android::binder::Status:: \ |
| 19 | fromServiceSpecificError( \ |
| 20 | ERROR_IFACE_INVALID, "wpa_supplicant does " \ |
| 21 | "not control this " \ |
| 22 | "interface."); \ |
| 23 | } \ |
| 24 | } // #define RETURN_IF_IFACE_INVALID(wpa_s) |
| 25 | |
Roshan Pius | 54e763a | 2016-07-06 15:41:53 -0700 | [diff] [blame] | 26 | Iface::Iface(struct wpa_global *wpa_global, const char ifname[]) |
| 27 | : wpa_global_(wpa_global), ifname_(ifname) |
| 28 | { |
| 29 | } |
Dmitry Shmidt | e466304 | 2016-04-04 10:07:49 -0700 | [diff] [blame] | 30 | |
Roshan Pius | 54e763a | 2016-07-06 15:41:53 -0700 | [diff] [blame] | 31 | android::binder::Status Iface::GetName(std::string *iface_name_out) |
| 32 | { |
| 33 | // We could directly return the name we hold, but let's verify |
| 34 | // if the underlying iface still exists. |
Roshan Pius | 8702ba9 | 2016-07-25 15:29:39 -0700 | [diff] [blame^] | 35 | RETURN_IF_IFACE_INVALID(retrieveIfacePtr()); |
Roshan Pius | 54e763a | 2016-07-06 15:41:53 -0700 | [diff] [blame] | 36 | *iface_name_out = ifname_; |
| 37 | return android::binder::Status::ok(); |
| 38 | } |
| 39 | |
Roshan Pius | d6e3751 | 2016-07-07 13:20:46 -0700 | [diff] [blame] | 40 | android::binder::Status Iface::AddNetwork( |
| 41 | android::sp<fi::w1::wpa_supplicant::INetwork> *network_object_out) |
| 42 | { |
Roshan Pius | d385445 | 2016-07-07 16:46:41 -0700 | [diff] [blame] | 43 | struct wpa_supplicant *wpa_s = retrieveIfacePtr(); |
Roshan Pius | 8702ba9 | 2016-07-25 15:29:39 -0700 | [diff] [blame^] | 44 | RETURN_IF_IFACE_INVALID(wpa_s); |
Roshan Pius | d385445 | 2016-07-07 16:46:41 -0700 | [diff] [blame] | 45 | |
Roshan Pius | f745df8 | 2016-07-14 16:00:23 -0700 | [diff] [blame] | 46 | struct wpa_ssid *ssid = wpa_supplicant_add_network(wpa_s); |
Roshan Pius | d385445 | 2016-07-07 16:46:41 -0700 | [diff] [blame] | 47 | if (!ssid) { |
| 48 | return android::binder::Status::fromServiceSpecificError( |
| 49 | ERROR_GENERIC, "wpa_supplicant couldn't add this network."); |
| 50 | } |
| 51 | |
Roshan Pius | d385445 | 2016-07-07 16:46:41 -0700 | [diff] [blame] | 52 | BinderManager *binder_manager = BinderManager::getInstance(); |
| 53 | if (!binder_manager || |
| 54 | binder_manager->getNetworkBinderObjectByIfnameAndNetworkId( |
| 55 | wpa_s->ifname, ssid->id, network_object_out)) { |
| 56 | return android::binder::Status::fromServiceSpecificError( |
| 57 | ERROR_GENERIC, |
| 58 | "wpa_supplicant encountered a binder error."); |
| 59 | } |
Roshan Pius | d6e3751 | 2016-07-07 13:20:46 -0700 | [diff] [blame] | 60 | return android::binder::Status::ok(); |
| 61 | } |
| 62 | |
| 63 | android::binder::Status Iface::RemoveNetwork(int network_id) |
| 64 | { |
Roshan Pius | d385445 | 2016-07-07 16:46:41 -0700 | [diff] [blame] | 65 | struct wpa_supplicant *wpa_s = retrieveIfacePtr(); |
Roshan Pius | 8702ba9 | 2016-07-25 15:29:39 -0700 | [diff] [blame^] | 66 | RETURN_IF_IFACE_INVALID(wpa_s); |
Roshan Pius | d385445 | 2016-07-07 16:46:41 -0700 | [diff] [blame] | 67 | |
Roshan Pius | f745df8 | 2016-07-14 16:00:23 -0700 | [diff] [blame] | 68 | int result = wpa_supplicant_remove_network(wpa_s, network_id); |
| 69 | if (result == -1) { |
Roshan Pius | d385445 | 2016-07-07 16:46:41 -0700 | [diff] [blame] | 70 | return android::binder::Status::fromServiceSpecificError( |
| 71 | ERROR_NETWORK_UNKNOWN, |
| 72 | "wpa_supplicant does not control this network."); |
| 73 | } |
Roshan Pius | f745df8 | 2016-07-14 16:00:23 -0700 | [diff] [blame] | 74 | |
| 75 | if (result == -2) { |
Roshan Pius | d385445 | 2016-07-07 16:46:41 -0700 | [diff] [blame] | 76 | return android::binder::Status::fromServiceSpecificError( |
| 77 | ERROR_GENERIC, |
| 78 | "wpa_supplicant couldn't remove this network."); |
| 79 | } |
| 80 | return android::binder::Status::ok(); |
| 81 | } |
| 82 | |
| 83 | android::binder::Status Iface::GetNetwork( |
| 84 | int network_id, |
| 85 | android::sp<fi::w1::wpa_supplicant::INetwork> *network_object_out) |
| 86 | { |
| 87 | struct wpa_supplicant *wpa_s = retrieveIfacePtr(); |
Roshan Pius | 8702ba9 | 2016-07-25 15:29:39 -0700 | [diff] [blame^] | 88 | RETURN_IF_IFACE_INVALID(wpa_s); |
Roshan Pius | d385445 | 2016-07-07 16:46:41 -0700 | [diff] [blame] | 89 | |
| 90 | struct wpa_ssid *ssid = wpa_config_get_network(wpa_s->conf, network_id); |
| 91 | if (!ssid) { |
| 92 | return android::binder::Status::fromServiceSpecificError( |
| 93 | ERROR_NETWORK_UNKNOWN, |
| 94 | "wpa_supplicant does not control this network."); |
| 95 | } |
| 96 | |
| 97 | BinderManager *binder_manager = BinderManager::getInstance(); |
| 98 | if (!binder_manager || |
| 99 | binder_manager->getNetworkBinderObjectByIfnameAndNetworkId( |
| 100 | wpa_s->ifname, ssid->id, network_object_out)) { |
| 101 | return android::binder::Status::fromServiceSpecificError( |
| 102 | ERROR_GENERIC, |
| 103 | "wpa_supplicant encountered a binder error."); |
| 104 | } |
Roshan Pius | d6e3751 | 2016-07-07 13:20:46 -0700 | [diff] [blame] | 105 | return android::binder::Status::ok(); |
| 106 | } |
| 107 | |
Roshan Pius | 0470cc8 | 2016-07-14 16:37:07 -0700 | [diff] [blame] | 108 | android::binder::Status Iface::RegisterCallback( |
| 109 | const android::sp<fi::w1::wpa_supplicant::IIfaceCallback> &callback) |
| 110 | { |
| 111 | struct wpa_supplicant *wpa_s = retrieveIfacePtr(); |
Roshan Pius | 8702ba9 | 2016-07-25 15:29:39 -0700 | [diff] [blame^] | 112 | RETURN_IF_IFACE_INVALID(wpa_s); |
| 113 | |
Roshan Pius | 0470cc8 | 2016-07-14 16:37:07 -0700 | [diff] [blame] | 114 | BinderManager *binder_manager = BinderManager::getInstance(); |
| 115 | if (!binder_manager || |
| 116 | binder_manager->addIfaceCallbackBinderObject(ifname_, callback)) { |
| 117 | return android::binder::Status::fromServiceSpecificError( |
| 118 | ERROR_GENERIC, |
| 119 | "wpa_supplicant encountered a binder error."); |
| 120 | } |
| 121 | return android::binder::Status::ok(); |
| 122 | } |
| 123 | |
Roshan Pius | 54e763a | 2016-07-06 15:41:53 -0700 | [diff] [blame] | 124 | /** |
| 125 | * Retrieve the underlying |wpa_supplicant| struct pointer for |
| 126 | * this iface. |
| 127 | * If the underlying iface is removed, then all RPC method calls |
| 128 | * on this object will return failure. |
| 129 | */ |
| 130 | wpa_supplicant *Iface::retrieveIfacePtr() |
| 131 | { |
| 132 | return wpa_supplicant_get_iface( |
| 133 | (struct wpa_global *)wpa_global_, ifname_.c_str()); |
| 134 | } |
Roshan Pius | 54e763a | 2016-07-06 15:41:53 -0700 | [diff] [blame] | 135 | } // namespace wpa_supplicant_binder |