Mbed OS Reference | PPPInterface.h Source File

 /*
  * Copyright (c) 2019 ARM Limited
  * SPDX-License-Identifier: Apache-2.0
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *     http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
 
 #ifndef PPP_INTERFACE_H
 #define PPP_INTERFACE_H
 
 #include "nsapi.h"
 #include "OnboardNetworkStack.h"
 #include "NetworkInterface.h"
 #include "PPP.h"
 
 
 /** PPPInterface class
  *  Implementation of the NetworkInterface for an PPP-service
  *
  * This class provides the necessary glue logic to create a NetworkInterface
  * based on an PPP and an OnboardNetworkStack.
  *
  */
 class PPPInterface : public virtual NetworkInterface {
 public:
     /** Create an PPP-based network interface.
      *
      * The default arguments obtain the default PPP, which will be target-
      * dependent (and the target may have some JSON option to choose which
      * is the default, if there are multiple). The default stack is configured
      * by JSON option nsapi.default-stack.
      *
      * Due to inability to return errors from the constructor, no real
      * work is done until the first call to connect().
      *
      * @param ppp  Reference to PPP to use
      * @param stack Reference to onboard-network stack to use
      */
     PPPInterface(PPP &ppp = PPP::get_default_instance(),
                  OnboardNetworkStack &stack = OnboardNetworkStack::get_default_instance());
     virtual ~PPPInterface();
 
     /** Set a static IP address
      *
      *  Configures this network interface to use a static IP address.
      *  Implicitly disables DHCP, which can be enabled in set_dhcp.
      *  Requires that the network is disconnected.
      *
      *  @param ip_address  Null-terminated representation of the local IP address
      *  @param netmask     Null-terminated representation of the local network mask
      *  @param gateway     Null-terminated representation of the local gateway
      *  @return            0 on success, negative error code on failure
      */
     virtual nsapi_error_t set_network(const char *ip_address, const char *netmask, const char *gateway);
 
     /** Start the interface
      *  @return             0 on success, negative on failure
      */
     virtual nsapi_error_t connect();
 
     /** Stop the interface
      *  @return             0 on success, negative on failure
      */
     virtual nsapi_error_t disconnect();
 
     /** Get the local IP address
      *
      *  @return         Null-terminated representation of the local IP address
      *                  or null if no IP address has been received
      */
     virtual const char *get_ip_address();
 
     /** Get the local network mask
      *
      *  @return         Null-terminated representation of the local network mask
      *                  or null if no network mask has been received
      */
     virtual const char *get_netmask();
 
     /** Get the local gateways
      *
      *  @return         Null-terminated representation of the local gateway
      *                  or null if no network mask has been received
      */
     virtual const char *get_gateway();
 
     /** Get the network interface name
      *
      *  @return         Null-terminated representation of the network interface name
      *                  or null if  interface not exists
      */
     virtual char *get_interface_name(char *interface_name);
 
     /** Set the network interface as default one
       */
     virtual void set_as_default();
 
     /** Register callback for status reporting
      *
      *  @param status_cb The callback for status changes
      */
     virtual void attach(mbed::Callback<void(nsapi_event_t, intptr_t)> status_cb);
 
     /** Get the connection status
      *
      *  @return         The connection status according to nsapi_connection_status_t
      */
     virtual nsapi_connection_status_t get_connection_status() const;
 
     /** Set blocking status of connect() which by default should be blocking
      *
      *  @param blocking true if connect is blocking
      *  @return         0 on success, negative error code on failure
      */
     virtual nsapi_error_t set_blocking(bool blocking);
 
     /** Sets file stream used to communicate with modem
      *
      * @param stream Pointer to file handle
      */
     virtual void set_stream(mbed::FileHandle *stream);
 
     /** Sets IP protocol versions of IP stack
      *
      * @param ip_stack IP protocol version
      */
     virtual void set_ip_stack(nsapi_ip_stack_t ip_stack);
 
     /** Sets user name and password for PPP protocol
      *
      * @param uname    User name
      * @param password Password
      */
     virtual void set_credentials(const char *uname, const char *password);
 
     /** Provide access to the PPP
      *
      * This should be used with care - normally the network stack would
      * control the PPP, so manipulating the PPP while the stack
      * is also using it (ie after connect) will likely cause problems.
      *
      * @return          Reference to the PPP in use
      */
     PPP &getppp() const
     {
         return _ppp;
     }
 
     virtual PPPInterface *pppInterface()
     {
         return this;
     }
 
 protected:
     /** Provide access to the underlying stack
      *
      *  @return The underlying network stack
      */
     virtual NetworkStack *get_stack();
 
     PPP &_ppp;
     OnboardNetworkStack &_stack;
     OnboardNetworkStack::Interface *_interface;
     bool _blocking;
     char _ip_address[NSAPI_IPv6_SIZE];
     char _netmask[NSAPI_IPv4_SIZE];
     char _gateway[NSAPI_IPv4_SIZE];
     mbed::Callback<void(nsapi_event_t, intptr_t)> _connection_status_cb;
 
     mbed::FileHandle *_stream;
     nsapi_ip_stack_t _ip_stack;
     const char *_uname;
     const char *_password;
 
 };
 
 #endif
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