| 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 | |
| 10 | #include <binder/IPCThreadState.h> |
| 11 | #include <binder/ProcessState.h> |
| 12 | #include <binder/IServiceManager.h> |
| 13 | |
| 14 | #include "binder_manager.h" |
| 15 | |
| 16 | extern "C" { |
| 17 | #include "utils/includes.h" |
| 18 | #include "utils/common.h" |
| 19 | #include "utils/eloop.h" |
| 20 | #include "binder.h" |
| 21 | #include "binder_i.h" |
| 22 | } |
| 23 | |
| 24 | void wpas_binder_sock_handler(int sock, void *eloop_ctx, void *sock_ctx) |
| 25 | { |
| 26 | struct wpa_global *global = (wpa_global *) eloop_ctx; |
| 27 | struct wpas_binder_priv *priv = (wpas_binder_priv *) sock_ctx; |
| 28 | |
| 29 | wpa_printf(MSG_DEBUG, "Processing binder events on FD %d", |
| 30 | priv->binder_fd); |
| 31 | android::IPCThreadState::self()->handlePolledCommands(); |
| 32 | } |
| 33 | |
| 34 | |
| 35 | struct wpas_binder_priv * wpas_binder_init(struct wpa_global *global) |
| 36 | { |
| 37 | struct wpas_binder_priv *priv; |
| 38 | wpa_supplicant_binder::BinderManager *binder_manager; |
| 39 | |
| 40 | priv = (wpas_binder_priv *) os_zalloc(sizeof(*priv)); |
| 41 | if (!priv) |
| 42 | return NULL; |
| 43 | priv->global = global; |
| 44 | |
| 45 | android::ProcessState::self()->setThreadPoolMaxThreadCount(0); |
| 46 | android::IPCThreadState::self()->disableBackgroundScheduling(true); |
| 47 | android::IPCThreadState::self()->setupPolling(&priv->binder_fd); |
| 48 | wpa_printf(MSG_INFO, "Process binder events on FD %d", priv->binder_fd); |
| 49 | if (priv->binder_fd < 0) |
| 50 | goto err; |
| 51 | /* Look for read events from the binder socket in the eloop. */ |
| 52 | if (eloop_register_read_sock(priv->binder_fd, wpas_binder_sock_handler, |
| 53 | global, priv) < 0) |
| 54 | goto err; |
| 55 | |
| 56 | binder_manager = wpa_supplicant_binder::BinderManager::getInstance(); |
| 57 | if (!binder_manager) |
| 58 | goto err; |
| 59 | binder_manager->registerBinderService(global); |
| 60 | /* We may not need to store this binder manager reference in the |
| 61 | * global data strucure because we've made it a singleton class. */ |
| 62 | priv->binder_manager = (void *) binder_manager; |
| 63 | |
| 64 | return priv; |
| 65 | |
| 66 | err: |
| 67 | wpas_binder_deinit(priv); |
| 68 | return NULL; |
| 69 | } |
| 70 | |
| 71 | |
| 72 | void wpas_binder_deinit(struct wpas_binder_priv *priv) |
| 73 | { |
| 74 | if (!priv) |
| 75 | return; |
| 76 | |
| 77 | wpa_supplicant_binder::BinderManager::destroyInstance(); |
| 78 | eloop_unregister_read_sock(priv->binder_fd); |
| 79 | android::IPCThreadState::shutdown(); |
| 80 | } |
| 81 | |
| 82 | |
| 83 | int wpas_binder_register_interface(struct wpa_supplicant *wpa_s) |
| 84 | { |
| 85 | if (!wpa_s->global->binder) |
| 86 | return 1; |
| 87 | |
| 88 | wpa_supplicant_binder::BinderManager *binder_manager = |
| 89 | wpa_supplicant_binder::BinderManager::getInstance(); |
| 90 | if (!binder_manager) |
| 91 | return 1; |
| 92 | |
| 93 | return binder_manager->registerInterface(wpa_s); |
| 94 | } |
| 95 | |
| 96 | |
| 97 | int wpas_binder_unregister_interface(struct wpa_supplicant *wpa_s) |
| 98 | { |
| 99 | if (!wpa_s->global->binder) |
| 100 | return 1; |
| 101 | |
| 102 | wpa_supplicant_binder::BinderManager *binder_manager = |
| 103 | wpa_supplicant_binder::BinderManager::getInstance(); |
| 104 | if (!binder_manager) |
| 105 | return 1; |
| 106 | |
| 107 | return binder_manager->unregisterInterface(wpa_s); |
| 108 | } |