gecko-dev/dom/wifi/WifiUtils.h

141 lines
3.7 KiB
C++

/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
/**
* Abstraction on top of the wifi support from libhardware_legacy that we
* use to talk to the wpa_supplicant.
*/
#ifndef WifiUtils_h
#define WifiUtils_h
#include "nsString.h"
#include "nsAutoPtr.h"
#include "mozilla/dom/WifiOptionsBinding.h"
#include "NetUtils.h"
#include "nsCxPusher.h"
// Needed to add a copy constructor to WifiCommandOptions.
struct CommandOptions
{
public:
CommandOptions(const CommandOptions& aOther) {
mId = aOther.mId;
mCmd = aOther.mCmd;
mRequest = aOther.mRequest;
mIfname = aOther.mIfname;
mRoute = aOther.mRoute;
mIpaddr = aOther.mIpaddr;
mMask = aOther.mMask;
mGateway = aOther.mGateway;
mDns1 = aOther.mDns1;
mDns2 = aOther.mDns2;
mKey = aOther.mKey;
mValue = aOther.mValue;
mDefaultValue = aOther.mDefaultValue;
}
CommandOptions(const mozilla::dom::WifiCommandOptions& aOther) {
#define COPY_OPT_FIELD(prop, defaultValue) \
if (aOther.prop.WasPassed()) { \
prop = aOther.prop.Value(); \
} else { \
prop = defaultValue; \
}
#define COPY_FIELD(prop) prop = aOther.prop;
COPY_FIELD(mId)
COPY_FIELD(mCmd)
COPY_OPT_FIELD(mRequest, EmptyString())
COPY_OPT_FIELD(mIfname, EmptyString())
COPY_OPT_FIELD(mIpaddr, 0)
COPY_OPT_FIELD(mRoute, 0)
COPY_OPT_FIELD(mMask, 0)
COPY_OPT_FIELD(mGateway, 0)
COPY_OPT_FIELD(mDns1, 0)
COPY_OPT_FIELD(mDns2, 0)
COPY_OPT_FIELD(mKey, EmptyString())
COPY_OPT_FIELD(mValue, EmptyString())
COPY_OPT_FIELD(mDefaultValue, EmptyString())
#undef COPY_OPT_FIELD
#undef COPY_FIELD
}
// All the fields, not Optional<> anymore to get copy constructors.
nsString mCmd;
nsString mDefaultValue;
int32_t mDns1;
int32_t mDns2;
int32_t mGateway;
int32_t mId;
nsString mIfname;
int32_t mIpaddr;
nsString mKey;
int32_t mMask;
nsString mRequest;
int32_t mRoute;
nsString mValue;
};
// Abstract class that exposes libhardware_legacy functions we need for
// wifi management.
// We use the ICS signatures here since they are likely more future-proof.
class WpaSupplicantImpl
{
public:
// Suppress warning from nsAutoPtr
virtual ~WpaSupplicantImpl() {}
virtual int32_t
do_wifi_wait_for_event(const char *iface, char *buf, size_t len) = 0; // ICS != JB
virtual int32_t
do_wifi_command(const char* iface, const char* cmd, char* buff, size_t* len) = 0; // ICS != JB
virtual int32_t
do_wifi_load_driver() = 0;
virtual int32_t
do_wifi_unload_driver() = 0;
virtual int32_t
do_wifi_start_supplicant(int32_t) = 0; // ICS != JB
virtual int32_t
do_wifi_stop_supplicant() = 0;
virtual int32_t
do_wifi_connect_to_supplicant(const char* iface) = 0; // ICS != JB
virtual void
do_wifi_close_supplicant_connection(const char* iface) = 0; // ICS != JB
};
// Concrete class to use to access the wpa supplicant.
class WpaSupplicant MOZ_FINAL
{
public:
WpaSupplicant();
// Use nsCString as the type of aInterface to guarantee it's
// null-terminated so that we can pass it to c API without
// conversion
void WaitForEvent(nsAString& aEvent, const nsCString& aInterface);
bool ExecuteCommand(CommandOptions aOptions,
mozilla::dom::WifiResultOptions& result,
const nsCString& aInterface);
private:
nsAutoPtr<WpaSupplicantImpl> mImpl;
nsAutoPtr<NetUtils> mNetUtils;
protected:
void CheckBuffer(char* buffer, int32_t length, nsAString& aEvent);
uint32_t MakeMask(uint32_t len);
};
#endif // WifiUtils_h