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/IServiceManager.h>
11 
12 #include "binder_constants.h"
13 #include "binder_manager.h"
14 
15 extern "C" {
16 #include "utils/common.h"
17 #include "utils/includes.h"
18 }
19 
20 namespace wpa_supplicant_binder {
21 
22 BinderManager *BinderManager::instance_ = NULL;
23 
getInstance()24 BinderManager *BinderManager::getInstance()
25 {
26 	if (!instance_)
27 		instance_ = new BinderManager();
28 	return instance_;
29 }
30 
destroyInstance()31 void BinderManager::destroyInstance()
32 {
33 	if (instance_)
34 		delete instance_;
35 	instance_ = NULL;
36 }
37 
registerBinderService(struct wpa_global * global)38 int BinderManager::registerBinderService(struct wpa_global *global)
39 {
40 	/* Create the main binder service object and register with
41 	 * system service manager. */
42 	supplicant_object_ = new Supplicant(global);
43 	android::String16 service_name(binder_constants::kServiceName);
44 	android::defaultServiceManager()->addService(
45 	    service_name, android::IInterface::asBinder(supplicant_object_));
46 	return 0;
47 }
48 
registerInterface(struct wpa_supplicant * wpa_s)49 int BinderManager::registerInterface(struct wpa_supplicant *wpa_s)
50 {
51 	if (!wpa_s)
52 		return 1;
53 
54 	/* Using the corresponding wpa_supplicant pointer as key to our
55 	 * object map. */
56 	const void *iface_key = wpa_s;
57 
58 	/* Return failure if we already have an object for that iface_key. */
59 	if (iface_object_map_.find(iface_key) != iface_object_map_.end())
60 		return 1;
61 
62 	iface_object_map_[iface_key] = new Iface(wpa_s);
63 	if (!iface_object_map_[iface_key].get())
64 		return 1;
65 
66 	wpa_s->binder_object_key = iface_key;
67 
68 	return 0;
69 }
70 
unregisterInterface(struct wpa_supplicant * wpa_s)71 int BinderManager::unregisterInterface(struct wpa_supplicant *wpa_s)
72 {
73 	if (!wpa_s || !wpa_s->binder_object_key)
74 		return 1;
75 
76 	const void *iface_key = wpa_s;
77 	if (iface_object_map_.find(iface_key) == iface_object_map_.end())
78 		return 1;
79 
80 	/* Delete the corresponding iface object from our map. */
81 	iface_object_map_.erase(iface_key);
82 	wpa_s->binder_object_key = NULL;
83 	return 0;
84 }
85 
getIfaceBinderObjectByKey(const void * iface_object_key,android::sp<fi::w1::wpa_supplicant::IIface> * iface_object)86 int BinderManager::getIfaceBinderObjectByKey(
87     const void *iface_object_key,
88     android::sp<fi::w1::wpa_supplicant::IIface> *iface_object)
89 {
90 	if (!iface_object_key || !iface_object)
91 		return 1;
92 
93 	if (iface_object_map_.find(iface_object_key) == iface_object_map_.end())
94 		return 1;
95 
96 	*iface_object = iface_object_map_[iface_object_key];
97 	return 0;
98 }
99 
100 } /* namespace wpa_supplicant_binder */
101