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_manager.h"
11 #include "supplicant.h"
12
13 namespace wpa_supplicant_binder {
14
Supplicant(struct wpa_global * global)15 Supplicant::Supplicant(struct wpa_global *global)
16 : wpa_global_(global)
17 {
18 }
19
20
CreateInterface(const android::os::PersistableBundle & params,android::sp<fi::w1::wpa_supplicant::IIface> * aidl_return)21 android::binder::Status Supplicant::CreateInterface(
22 const android::os::PersistableBundle ¶ms,
23 android::sp<fi::w1::wpa_supplicant::IIface> *aidl_return)
24 {
25 android::String16 driver, ifname, confname, bridge_ifname;
26
27 /* Check if required Ifname argument is missing */
28 if (!params.getString(android::String16("Ifname"), &ifname))
29 return android::binder::Status::fromServiceSpecificError(
30 ERROR_INVALID_ARGS,
31 android::String8("Ifname missing in params."));
32 /* Retrieve the remaining params from the dictionary */
33 params.getString(android::String16("Driver"), &driver);
34 params.getString(android::String16("ConfigFile"), &confname);
35 params.getString(android::String16("BridgeIfname"), &bridge_ifname);
36
37 /*
38 * Try to get the wpa_supplicant record for this iface, return
39 * an error if we already control it.
40 */
41 if (wpa_supplicant_get_iface(wpa_global_,
42 android::String8(ifname).string()) != NULL)
43 return android::binder::Status::fromServiceSpecificError(
44 ERROR_IFACE_EXISTS,
45 android::String8("wpa_supplicant already controls this interface."));
46
47 android::binder::Status status;
48 struct wpa_supplicant *wpa_s = NULL;
49 struct wpa_interface iface;
50
51 os_memset(&iface, 0, sizeof(iface));
52 iface.driver = os_strdup(android::String8(driver).string());
53 iface.ifname = os_strdup(android::String8(ifname).string());
54 iface.confname = os_strdup(android::String8(confname).string());
55 iface.bridge_ifname = os_strdup(
56 android::String8(bridge_ifname).string());
57 /* Otherwise, have wpa_supplicant attach to it. */
58 wpa_s = wpa_supplicant_add_iface(wpa_global_, &iface, NULL);
59 /* The supplicant core creates a corresponding binder object via
60 * BinderManager when |wpa_supplicant_add_iface| is called. */
61 if (!wpa_s || !wpa_s->binder_object_key) {
62 status = android::binder::Status::fromServiceSpecificError(
63 ERROR_UNKNOWN,
64 android::String8("wpa_supplicant couldn't grab this interface."));
65 } else {
66 BinderManager *binder_manager = BinderManager::getInstance();
67
68 if (!binder_manager ||
69 binder_manager->getIfaceBinderObjectByKey(
70 wpa_s->binder_object_key, aidl_return))
71 status = android::binder::Status::fromServiceSpecificError(
72 ERROR_UNKNOWN,
73 android::String8("wpa_supplicant encountered a binder error."));
74 else
75 status = android::binder::Status::ok();
76 }
77 os_free((void *) iface.driver);
78 os_free((void *) iface.ifname);
79 os_free((void *) iface.confname);
80 os_free((void *) iface.bridge_ifname);
81 return status;
82 }
83
84
RemoveInterface(const std::string & ifname)85 android::binder::Status Supplicant::RemoveInterface(const std::string &ifname)
86 {
87 struct wpa_supplicant *wpa_s;
88
89 wpa_s = wpa_supplicant_get_iface(wpa_global_, ifname.c_str());
90 if (!wpa_s || !wpa_s->binder_object_key)
91 return android::binder::Status::fromServiceSpecificError(
92 ERROR_IFACE_UNKNOWN,
93 android::String8("wpa_supplicant does not control this interface."));
94 if (wpa_supplicant_remove_iface(wpa_global_, wpa_s, 0))
95 return android::binder::Status::fromServiceSpecificError(
96 ERROR_UNKNOWN,
97 android::String8("wpa_supplicant couldn't remove this interface."));
98 return android::binder::Status::ok();
99 }
100
101
GetInterface(const std::string & ifname,android::sp<fi::w1::wpa_supplicant::IIface> * aidl_return)102 android::binder::Status Supplicant::GetInterface(
103 const std::string &ifname,
104 android::sp<fi::w1::wpa_supplicant::IIface> *aidl_return)
105 {
106 struct wpa_supplicant *wpa_s;
107
108 wpa_s = wpa_supplicant_get_iface(wpa_global_, ifname.c_str());
109 if (!wpa_s || !wpa_s->binder_object_key)
110 return android::binder::Status::fromServiceSpecificError(
111 ERROR_IFACE_UNKNOWN,
112 android::String8("wpa_supplicant does not control this interface."));
113
114 BinderManager *binder_manager = BinderManager::getInstance();
115 if (!binder_manager ||
116 binder_manager->getIfaceBinderObjectByKey(wpa_s->binder_object_key,
117 aidl_return))
118 return android::binder::Status::fromServiceSpecificError(
119 ERROR_UNKNOWN,
120 android::String8("wpa_supplicant encountered a binder error."));
121
122 return android::binder::Status::ok();
123 }
124
125 } /* namespace wpa_supplicant_binder */
126