[RESEND PATCH 1/2] binder: Add binder skeletal code.
Roshan Pius
rpius at google.com
Tue Feb 16 16:39:28 PST 2016
Create the skeletal binder interface for wpa_supplicant. The interface
hierarchy is based off the existing dbus
interface(https://w1.fi/wpa_supplicant/devel/dbus.html).
Since we use libbinder, the binder interface codebase needs to be
written in c++ and can only be compiled on Android platform
for now.
The aidl files define binder RPC interfaces. The android build system
generates the corresponding c++ interface classes which needs to be
implemented by the server process.
The clients can obtain a reference to the binder service (root object) using:
android::String16 service_name("fi.w1.wpa_supplicant");
android::sp<android::IBinder> binder =
android::defaultServiceManager()->getService(service_name);
Once a reference to the root object is retrieved, the clients can
obtain references to other RPC objects using that root object methods.
TEST: `mmm -j32 external/wpa_supplicant_8/wpa_supplicant` with
CONFIG_CTRL_IFACE_BINDER=y.
Signed-off-by: Roshan Pius <rpius at google.com>
Change-Id: Icfe066f23c1637a521dce450c049ee23bab836b5
---
wpa_supplicant/Android.mk | 14 ++++
wpa_supplicant/android.config | 4 ++
wpa_supplicant/binder/binder.cpp | 79 ++++++++++++++++++++++
wpa_supplicant/binder/binder.h | 32 +++++++++
wpa_supplicant/binder/binder_i.h | 27 ++++++++
wpa_supplicant/binder/binder_manager.cpp | 49 ++++++++++++++
wpa_supplicant/binder/binder_manager.h | 52 ++++++++++++++
.../binder/fi/w1/wpa_supplicant/IIface.aidl | 16 +++++
.../binder/fi/w1/wpa_supplicant/ISupplicant.aidl | 19 ++++++
.../fi/w1/wpa_supplicant/ISupplicantCallbacks.aidl | 20 ++++++
wpa_supplicant/binder/iface.cpp | 19 ++++++
wpa_supplicant/binder/iface.h | 39 +++++++++++
wpa_supplicant/binder/supplicant.cpp | 19 ++++++
wpa_supplicant/binder/supplicant.h | 42 ++++++++++++
wpa_supplicant/notify.c | 12 ++++
wpa_supplicant/wpa_supplicant_i.h | 2 +
16 files changed, 445 insertions(+)
create mode 100644 wpa_supplicant/binder/binder.cpp
create mode 100644 wpa_supplicant/binder/binder.h
create mode 100644 wpa_supplicant/binder/binder_i.h
create mode 100644 wpa_supplicant/binder/binder_manager.cpp
create mode 100644 wpa_supplicant/binder/binder_manager.h
create mode 100644 wpa_supplicant/binder/fi/w1/wpa_supplicant/IIface.aidl
create mode 100644 wpa_supplicant/binder/fi/w1/wpa_supplicant/ISupplicant.aidl
create mode 100644 wpa_supplicant/binder/fi/w1/wpa_supplicant/ISupplicantCallbacks.aidl
create mode 100644 wpa_supplicant/binder/iface.cpp
create mode 100644 wpa_supplicant/binder/iface.h
create mode 100644 wpa_supplicant/binder/supplicant.cpp
create mode 100644 wpa_supplicant/binder/supplicant.h
diff --git a/wpa_supplicant/Android.mk b/wpa_supplicant/Android.mk
index 95690bf..eb23fdb 100644
--- a/wpa_supplicant/Android.mk
+++ b/wpa_supplicant/Android.mk
@@ -1336,6 +1336,16 @@ endif
OBJS += $(DBUS_OBJS)
L_CFLAGS += $(DBUS_CFLAGS)
+ifdef CONFIG_CTRL_IFACE_BINDER
+BINDER=y
+L_CFLAGS += -DCONFIG_BINDER -DCONFIG_CTRL_IFACE_BINDER
+OBJS += binder/binder.cpp binder/binder_manager.cpp
+OBJS += binder/supplicant.cpp binder/iface.cpp
+OBJS += binder/fi/w1/wpa_supplicant/ISupplicant.aidl
+OBJS += binder/fi/w1/wpa_supplicant/ISupplicantCallbacks.aidl
+OBJS += binder/fi/w1/wpa_supplicant/IIface.aidl
+endif
+
ifdef CONFIG_READLINE
OBJS_c += src/utils/edit_readline.c
LIBS_c += -lncurses -lreadline
@@ -1573,6 +1583,10 @@ LOCAL_C_INCLUDES := $(INCLUDES)
ifeq ($(DBUS), y)
LOCAL_SHARED_LIBRARIES += libdbus
endif
+ifeq ($(BINDER), y)
+LOCAL_AIDL_INCLUDES := $(LOCAL_PATH)/binder frameworks/native/aidl/binder
+LOCAL_SHARED_LIBRARIES += libutils libbinder
+endif
include $(BUILD_EXECUTABLE)
########################
diff --git a/wpa_supplicant/android.config b/wpa_supplicant/android.config
index e9c0a01..90048d0 100644
--- a/wpa_supplicant/android.config
+++ b/wpa_supplicant/android.config
@@ -324,6 +324,10 @@ CONFIG_IEEE80211W=y
# Add introspection support for new DBus control interface
#CONFIG_CTRL_IFACE_DBUS_INTRO=y
+# Add support for Binder control interface
+# Only applicable for Android platforms.
+# CONFIG_CTRL_IFACE_BINDER=y
+
# Add support for loading EAP methods dynamically as shared libraries.
# When this option is enabled, each EAP method can be either included
# statically (CONFIG_EAP_<method>=y) or dynamically (CONFIG_EAP_<method>=dyn).
diff --git a/wpa_supplicant/binder/binder.cpp b/wpa_supplicant/binder/binder.cpp
new file mode 100644
index 0000000..86a9d30
--- /dev/null
+++ b/wpa_supplicant/binder/binder.cpp
@@ -0,0 +1,79 @@
+/*
+ * WPA Supplicant - binder interface for wpa_supplicant daemon
+ * Copyright (c) 2004-2016, Jouni Malinen <j at w1.fi>
+ * Copyright (c) 2004-2016, Roshan Pius <rpius at google.com>
+ *
+ * This software may be distributed under the terms of the BSD license.
+ * See README for more details.
+ */
+
+#include <binder/IPCThreadState.h>
+#include <binder/ProcessState.h>
+#include <binder/IServiceManager.h>
+
+#include "fi/w1/wpa_supplicant1/IWpaSupplicantMain.h"
+
+#include "binder_manager.h"
+
+extern "C" {
+#include "utils/includes.h"
+#include "utils/common.h"
+#include "utils/eloop.h"
+#include "binder.h"
+#include "binder_i.h"
+}
+
+void wpas_binder_sock_handler(int sock, void *eloop_ctx, void *sock_ctx)
+{
+ struct wpa_global *global = (wpa_global *)eloop_ctx;
+ struct wpas_binder_priv *priv = (wpas_binder_priv *)sock_ctx;
+
+ wpa_printf(MSG_DEBUG, "Processing binder events on FD %d", priv->binder_fd);
+ android::IPCThreadState::self()->handlePolledCommands();
+}
+
+struct wpas_binder_priv * wpas_binder_init(struct wpa_global *global)
+{
+ struct wpas_binder_priv *priv;
+ wpa_supplicant_binder::BinderManager *binder_manager;
+
+ priv = (wpas_binder_priv *)os_zalloc(sizeof(*priv));
+ if (priv == NULL)
+ return NULL;
+ priv->global = global;
+
+ android::ProcessState::self()->setThreadPoolMaxThreadCount(0);
+ android::IPCThreadState::self()->disableBackgroundScheduling(true);
+ android::IPCThreadState::self()->setupPolling(&priv->binder_fd);
+ wpa_printf(MSG_INFO, "Process binder events on FD %d", priv->binder_fd);
+ if (priv->binder_fd < 0)
+ goto err;
+ // Look for read events from the binder socket in the eloop.
+ if (eloop_register_read_sock(
+ priv->binder_fd, wpas_binder_sock_handler, global, priv) < 0)
+ goto err;
+
+ binder_manager = wpa_supplicant_binder::BinderManager::getInstance();
+ if (binder_manager == NULL)
+ goto err;
+ binder_manager->registerBinderService(global);
+ // We may not need to store this binder manager reference in the
+ // global data strucure because we've made it a singleton class.
+ priv->binder_manager = (void *)binder_manager;
+
+ return priv;
+
+err:
+ wpas_binder_deinit(priv);
+ return NULL;
+}
+
+void wpas_binder_deinit(struct wpas_binder_priv *priv)
+{
+ if (priv == NULL)
+ return;
+
+ wpa_supplicant_binder::BinderManager::destroyInstance();
+ eloop_unregister_read_sock(priv->binder_fd);
+ android::IPCThreadState::shutdown();
+}
diff --git a/wpa_supplicant/binder/binder.h b/wpa_supplicant/binder/binder.h
new file mode 100644
index 0000000..d12a502
--- /dev/null
+++ b/wpa_supplicant/binder/binder.h
@@ -0,0 +1,32 @@
+/*
+ * WPA Supplicant - binder interface for wpa_supplicant daemon
+ * Copyright (c) 2004-2016, Jouni Malinen <j at w1.fi>
+ * Copyright (c) 2004-2016, Roshan Pius <rpius at google.com>
+ *
+ * This software may be distributed under the terms of the BSD license.
+ * See README for more details.
+ */
+
+#ifndef BINDER_H
+#define BINDER_H
+
+#ifdef _cplusplus
+extern "C" {
+#endif /* _cplusplus */
+
+/**
+ * This is the binder RPC interface entry point to the wpa_supplicant core.
+ * This initializes the binder driver & BinderManager instance and then forwards
+ * all the notifcations from the supplicant core to the BinderManager.
+ */
+struct wpas_binder_priv;
+struct wpa_global;
+
+struct wpas_binder_priv * wpas_binder_init(struct wpa_global *global);
+void wpas_binder_deinit(struct wpas_binder_priv *priv);
+
+#ifdef _cplusplus
+}
+#endif /* _cplusplus */
+
+#endif /* BINDER_H */
diff --git a/wpa_supplicant/binder/binder_i.h b/wpa_supplicant/binder/binder_i.h
new file mode 100644
index 0000000..6937e93
--- /dev/null
+++ b/wpa_supplicant/binder/binder_i.h
@@ -0,0 +1,27 @@
+/*
+ * WPA Supplicant - binder interface for wpa_supplicant daemon
+ * Copyright (c) 2004-2016, Jouni Malinen <j at w1.fi>
+ * Copyright (c) 2004-2016, Roshan Pius <rpius at google.com>
+ *
+ * This software may be distributed under the terms of the BSD license.
+ * See README for more details.
+ */
+
+#ifndef BINDER_I_H
+#define BINDER_I_H
+
+#ifdef _cplusplus
+extern "C" {
+#endif // _cplusplus
+
+struct wpas_binder_priv {
+ int binder_fd;
+ struct wpa_global *global;
+ void *binder_manager;
+};
+
+#ifdef _cplusplus
+}
+#endif // _cplusplus
+
+#endif /* BINDER_I_H */
diff --git a/wpa_supplicant/binder/binder_manager.cpp b/wpa_supplicant/binder/binder_manager.cpp
new file mode 100644
index 0000000..8517fd9
--- /dev/null
+++ b/wpa_supplicant/binder/binder_manager.cpp
@@ -0,0 +1,49 @@
+/*
+ * WPA Supplicant - binder interface for wpa_supplicant daemon
+ * Copyright (c) 2004-2016, Jouni Malinen <j at w1.fi>
+ * Copyright (c) 2004-2016, Roshan Pius <rpius at google.com>
+ *
+ * This software may be distributed under the terms of the BSD license.
+ * See README for more details.
+ */
+
+#include <binder/IServiceManager.h>
+
+#include "binder_manager.h"
+
+extern "C" {
+#include "utils/includes.h"
+#include "utils/common.h"
+}
+
+namespace wpa_supplicant_binder {
+
+const char BinderManager::kBinderServiceName[] = "fi.w1.wpa_supplicant";
+BinderManager *BinderManager::instance_ = NULL;
+
+BinderManager *BinderManager::getInstance()
+{
+ if (instance_ == NULL)
+ instance_ = new BinderManager();
+ return instance_;
+}
+
+void BinderManager::destroyInstance()
+{
+ if (instance_ != NULL)
+ delete instance_;
+ instance_ = NULL;
+}
+
+int BinderManager::registerBinderService(struct wpa_global *global)
+{
+ // Create the main binder service object and register with
+ // system service manager.
+ supplicant_object_ = new Supplicant(global);
+ android::String16 service_name(kBinderServiceName);
+ android::defaultServiceManager()->addService(
+ service_name, android::IInterface::asBinder(supplicant_object_));
+ return 0;
+}
+
+} // namespace wpa_supplicant_binder
diff --git a/wpa_supplicant/binder/binder_manager.h b/wpa_supplicant/binder/binder_manager.h
new file mode 100644
index 0000000..2530619
--- /dev/null
+++ b/wpa_supplicant/binder/binder_manager.h
@@ -0,0 +1,52 @@
+/*
+ * WPA Supplicant - binder interface for wpa_supplicant daemon
+ * Copyright (c) 2004-2016, Jouni Malinen <j at w1.fi>
+ * Copyright (c) 2004-2016, Roshan Pius <rpius at google.com>
+ *
+ * This software may be distributed under the terms of the BSD license.
+ * See README for more details.
+ */
+
+#ifndef BINDER_MANAGER_H
+#define BINDER_MANAGER_H
+
+#include <map>
+#include <string>
+
+#include "supplicant.h"
+#include "iface.h"
+
+struct wpa_global;
+struct wpa_supplicant;
+
+namespace wpa_supplicant_binder {
+/**
+ * BinderManager is responsible for managing the lifetime of all
+ * binder objects created by wpa_supplicant. This is a singleton
+ * class which is created by the supplicant core and can be used
+ * to get references to the binder objects.
+ */
+class BinderManager {
+public:
+ static const char kBinderServiceName[];
+
+ static BinderManager *getInstance();
+ static void destroyInstance();
+ int registerBinderService(struct wpa_global *global);
+
+private:
+ BinderManager() = default;
+ ~BinderManager() = default;
+
+ // Singleton instance of this class.
+ static BinderManager *instance_;
+ // The main binder service object.
+ android::sp<Supplicant> supplicant_object_;
+ // Map of all the interface specific binder objects controlled by
+ // wpa_supplicant. This map is keyed in by the corresponding
+ // wpa_supplicant structure pointer.
+ std::map<const void *, android::sp<Iface>> iface_object_map_;
+};
+} // namespace wpa_supplicant_binder
+
+#endif /* BINDER_MANAGER_H */
diff --git a/wpa_supplicant/binder/fi/w1/wpa_supplicant/IIface.aidl b/wpa_supplicant/binder/fi/w1/wpa_supplicant/IIface.aidl
new file mode 100644
index 0000000..e096109
--- /dev/null
+++ b/wpa_supplicant/binder/fi/w1/wpa_supplicant/IIface.aidl
@@ -0,0 +1,16 @@
+/*
+ * WPA Supplicant - binder interface for wpa_supplicant daemon
+ * Copyright (c) 2004-2016, Jouni Malinen <j at w1.fi>
+ * Copyright (c) 2004-2016, Roshan Pius <rpius at google.com>
+ *
+ * This software may be distributed under the terms of the BSD license.
+ * See README for more details.
+ */
+
+package fi.w1.wpa_supplicant;
+
+/**
+ * Interface exposed by wpa_supplicant for each network interface it controls.
+ */
+interface IIface {
+}
diff --git a/wpa_supplicant/binder/fi/w1/wpa_supplicant/ISupplicant.aidl b/wpa_supplicant/binder/fi/w1/wpa_supplicant/ISupplicant.aidl
new file mode 100644
index 0000000..5be2391
--- /dev/null
+++ b/wpa_supplicant/binder/fi/w1/wpa_supplicant/ISupplicant.aidl
@@ -0,0 +1,19 @@
+/*
+ * WPA Supplicant - binder interface for wpa_supplicant daemon
+ * Copyright (c) 2004-2016, Jouni Malinen <j at w1.fi>
+ * Copyright (c) 2004-2016, Roshan Pius <rpius at google.com>
+ *
+ * This software may be distributed under the terms of the BSD license.
+ * See README for more details.
+ */
+
+package fi.w1.wpa_supplicant;
+
+import android.os.PersistableBundle;
+
+/**
+ * Interface exposed by the wpa_supplicant binder service registered
+ * with the service manager with name: fi.w1.wpa_supplicant.
+ */
+interface ISupplicant {
+}
diff --git a/wpa_supplicant/binder/fi/w1/wpa_supplicant/ISupplicantCallbacks.aidl b/wpa_supplicant/binder/fi/w1/wpa_supplicant/ISupplicantCallbacks.aidl
new file mode 100644
index 0000000..0b05a00
--- /dev/null
+++ b/wpa_supplicant/binder/fi/w1/wpa_supplicant/ISupplicantCallbacks.aidl
@@ -0,0 +1,20 @@
+/*
+ * WPA Supplicant - binder interface for wpa_supplicant daemon
+ * Copyright (c) 2004-2016, Jouni Malinen <j at w1.fi>
+ * Copyright (c) 2004-2016, Roshan Pius <rpius at google.com>
+ *
+ * This software may be distributed under the terms of the BSD license.
+ * See README for more details.
+ */
+
+package fi.w1.wpa_supplicant;
+
+import android.os.PersistableBundle;
+
+/**
+ * Callback Interface exposed by the wpa_supplicant service. Clients need
+ * to host an instance of this binder object and pass a reference of the object
+ * to wpa_supplicant via the registerCallbacksObject method.
+ */
+interface ISupplicantCallbacks {
+}
diff --git a/wpa_supplicant/binder/iface.cpp b/wpa_supplicant/binder/iface.cpp
new file mode 100644
index 0000000..7b64c72
--- /dev/null
+++ b/wpa_supplicant/binder/iface.cpp
@@ -0,0 +1,19 @@
+/*
+ * WPA Supplicant - binder interface for wpa_supplicant daemon
+ * Copyright (c) 2004-2016, Jouni Malinen <j at w1.fi>
+ * Copyright (c) 2004-2016, Roshan Pius <rpius at google.com>
+ *
+ * This software may be distributed under the terms of the BSD license.
+ * See README for more details.
+ */
+
+#include "iface.h"
+
+namespace wpa_supplicant_binder {
+
+Iface::Iface(struct wpa_supplicant *wpa_s)
+ : wpa_s_(wpa_s)
+{
+}
+
+} // namespace wpa_supplicant_binder
diff --git a/wpa_supplicant/binder/iface.h b/wpa_supplicant/binder/iface.h
new file mode 100644
index 0000000..901d709
--- /dev/null
+++ b/wpa_supplicant/binder/iface.h
@@ -0,0 +1,39 @@
+/*
+ * WPA Supplicant - binder interface for wpa_supplicant daemon
+ * Copyright (c) 2004-2016, Jouni Malinen <j at w1.fi>
+ * Copyright (c) 2004-2016, Roshan Pius <rpius at google.com>
+ *
+ * This software may be distributed under the terms of the BSD license.
+ * See README for more details.
+ */
+
+#ifndef IFACE_H
+#define IFACE_H
+
+#include "fi/w1/wpa_supplicant/BnIface.h"
+
+extern "C" {
+#include "utils/includes.h"
+#include "utils/common.h"
+#include "../wpa_supplicant_i.h"
+}
+
+namespace wpa_supplicant_binder {
+/**
+ * Implementation of Iface binder object. Each unique binder
+ * object is used for control operations on a specific interface
+ * controlled by wpa_supplicant.
+ */
+class Iface : public fi::w1::wpa_supplicant::BnIface
+{
+public:
+ Iface(struct wpa_supplicant *wpa_s);
+ virtual ~Iface() = default;
+
+private:
+ // Raw pointer to the structure maintained by the core for this interface.
+ struct wpa_supplicant *wpa_s_;
+};
+} // namespace wpa_supplicant_binder
+
+#endif /* IFACE_H */
diff --git a/wpa_supplicant/binder/supplicant.cpp b/wpa_supplicant/binder/supplicant.cpp
new file mode 100644
index 0000000..c6a625a
--- /dev/null
+++ b/wpa_supplicant/binder/supplicant.cpp
@@ -0,0 +1,19 @@
+/*
+ * WPA Supplicant - binder interface for wpa_supplicant daemon
+ * Copyright (c) 2004-2016, Jouni Malinen <j at w1.fi>
+ * Copyright (c) 2004-2016, Roshan Pius <rpius at google.com>
+ *
+ * This software may be distributed under the terms of the BSD license.
+ * See README for more details.
+ */
+
+#include "supplicant.h"
+
+namespace wpa_supplicant_binder {
+
+Supplicant::Supplicant(struct wpa_global *global)
+ : wpa_global_(global)
+{
+}
+
+} // namespace wpa_supplicant_binder
diff --git a/wpa_supplicant/binder/supplicant.h b/wpa_supplicant/binder/supplicant.h
new file mode 100644
index 0000000..4983570
--- /dev/null
+++ b/wpa_supplicant/binder/supplicant.h
@@ -0,0 +1,42 @@
+/*
+ * WPA Supplicant - binder interface for wpa_supplicant daemon
+ * Copyright (c) 2004-2016, Jouni Malinen <j at w1.fi>
+ * Copyright (c) 2004-2016, Roshan Pius <rpius at google.com>
+ *
+ * This software may be distributed under the terms of the BSD license.
+ * See README for more details.
+ */
+
+#ifndef SUPPLICANT_H
+#define SUPPLICANT_H
+
+#include "fi/w1/wpa_supplicant/BnSupplicant.h"
+#include "fi/w1/wpa_supplicant/ISupplicantCallbacks.h"
+
+extern "C" {
+#include "utils/includes.h"
+#include "utils/common.h"
+#include "../wpa_supplicant_i.h"
+}
+
+namespace wpa_supplicant_binder {
+/**
+ * Implementation of the supplicant binder object. This binder
+ * object is used core for global control operations on
+ * wpa_supplicant.
+ */
+class Supplicant : public fi::w1::wpa_supplicant::BnSupplicant
+{
+public:
+ Supplicant(struct wpa_global *global);
+ virtual ~Supplicant() = default;
+
+private:
+ // Raw pointer to the global structure maintained by the core.
+ struct wpa_global *wpa_global_;
+ // All the callback objects registered by the clients.
+ std::vector<android::sp<fi::w1::wpa_supplicant::ISupplicantCallbacks>> callbacks_;
+};
+} // namespace wpa_supplicant_binder
+
+#endif /* SUPPLICANT_H */
diff --git a/wpa_supplicant/notify.c b/wpa_supplicant/notify.c
index 45d06bf..6935102 100644
--- a/wpa_supplicant/notify.c
+++ b/wpa_supplicant/notify.c
@@ -13,6 +13,7 @@
#include "config.h"
#include "wpa_supplicant_i.h"
#include "wps_supplicant.h"
+#include "binder/binder.h"
#include "dbus/dbus_common.h"
#include "dbus/dbus_old.h"
#include "dbus/dbus_new.h"
@@ -34,6 +35,12 @@ int wpas_notify_supplicant_initialized(struct wpa_global *global)
}
#endif /* CONFIG_DBUS */
+#ifdef CONFIG_BINDER
+ global->binder = wpas_binder_init(global);
+ if (global->binder == NULL)
+ return -1;
+#endif /* CONFIG_BINDER */
+
return 0;
}
@@ -44,6 +51,11 @@ void wpas_notify_supplicant_deinitialized(struct wpa_global *global)
if (global->dbus)
wpas_dbus_deinit(global->dbus);
#endif /* CONFIG_DBUS */
+
+#ifdef CONFIG_BINDER
+ if (global->binder)
+ wpas_binder_deinit(global->binder);
+#endif /* CONFIG_BINDER */
}
diff --git a/wpa_supplicant/wpa_supplicant_i.h b/wpa_supplicant/wpa_supplicant_i.h
index 7b74f38..d049e8a 100644
--- a/wpa_supplicant/wpa_supplicant_i.h
+++ b/wpa_supplicant/wpa_supplicant_i.h
@@ -44,6 +44,7 @@ struct wpa_driver_associate_params;
struct ctrl_iface_priv;
struct ctrl_iface_global_priv;
struct wpas_dbus_priv;
+struct wpas_binder_priv;
/**
* struct wpa_interface - Parameters for wpa_supplicant_add_iface()
@@ -253,6 +254,7 @@ struct wpa_global {
struct wpa_params params;
struct ctrl_iface_global_priv *ctrl_iface;
struct wpas_dbus_priv *dbus;
+ struct wpas_binder_priv *binder;
void **drv_priv;
size_t drv_count;
struct os_time suspend_time;
--
2.7.0.rc3.207.g0ac5344
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