Diff: NetServices/if/ppp/PPPNetIf.cpp

Revision:

0:f30e2135b0db

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/NetServices/if/ppp/PPPNetIf.cpp	Wed Feb 09 13:57:49 2011 +0000
@@ -0,0 +1,224 @@
+
+/*
+Copyright (c) 2010 Donatien Garnier (donatiengar [at] gmail [dot] com)
+ 
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+ 
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+ 
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+
+#include "PPPNetIf.h"
+#include "mbed.h"
+#include "ppp/ppp.h"
+#include "lwip/init.h"
+#include "lwip/sio.h"
+
+#define __DEBUG
+#include "dbg/dbg.h"
+
+#include "netCfg.h"
+#if NET_PPP
+
+#define PPP_TIMEOUT 60000
+
+#define BUF_SIZE 256
+
+PPPNetIf::PPPNetIf(GPRSModem* pIf) : LwipNetIf(), m_pIf(pIf),/* m_open(false),*/ m_connected(false), m_status(PPP_DISCONNECTED), m_fd(0) //, m_id(0)
+{
+  //FIXME: Check static refcount
+  m_buf = new uint8_t[BUF_SIZE];
+}
+
+PPPNetIf::~PPPNetIf()
+{
+  delete[] m_buf;
+}
+
+#if 0
+PPPErr PPPNetIf::open(Serial* pSerial)
+{
+  GPRSErr err = m_pIf->open(pSerial);
+  if(err)
+    return PPP_MODEM;
+  m_open = true;
+  #if 0
+  m_id = sioMgr::registerSerialIf(this);
+  if(!m_id)
+  {
+    close();
+    return PPP_CLOSED;
+  }
+  #endif
+  return PPP_OK;
+}
+#endif
+
+
+PPPErr PPPNetIf::GPRSConnect(const char* apn, const char* userId, const char* password) //Connect using GPRS
+{
+  LwipNetIf::init();
+  pppInit();
+  //TODO: Tell ATIf that we get ownership of the serial port
+    
+  GPRSErr gprsErr;
+  gprsErr = m_pIf->connect(apn);
+  if(gprsErr)
+    return PPP_NETWORK;
+    
+  DBG("PPPNetIf: If Connected.\n");
+
+  if( userId == NULL )
+    pppSetAuth(PPPAUTHTYPE_NONE, NULL, NULL);
+  else
+    pppSetAuth(PPPAUTHTYPE_PAP, userId, password); //TODO: Allow CHAP as well
+    
+  DBG("PPPNetIf: Set Auth.\n");
+  
+  //wait(1.);
+  
+  //m_pIf->flushBuffer(); //Flush buffer before passing serial port to PPP
+  
+  m_status = PPP_CONNECTING;
+  DBG("m_pIf = %p\n", m_pIf);
+  int res = pppOverSerialOpen((void*)m_pIf, sPppCallback, (void*)this);
+  DBG("PPP connected\n");
+  if(res<0)
+  {
+    disconnect();
+    return PPP_PROTOCOL;
+  }
+  
+  DBG("PPPNetIf: PPP Started with res = %d.\n", res);
+  
+  m_fd = res;
+  m_connected = true;
+  Timer t;
+  t.start();
+  while( m_status == PPP_CONNECTING ) //Wait for callback
+  {
+    poll();
+    if(t.read_ms()>PPP_TIMEOUT)
+    {
+      DBG("PPPNetIf: Timeout.\n");  
+      disconnect();
+      return PPP_PROTOCOL;
+    }
+  }
+  
+  DBG("PPPNetIf: Callback returned.\n");
+  
+  if( m_status == PPP_DISCONNECTED )
+  {
+    disconnect();
+    return PPP_PROTOCOL;
+  }
+  
+  return PPP_OK;
+
+}
+
+PPPErr PPPNetIf::ATConnect(const char* number) //Connect using a "classic" voice modem or GSM
+{
+  //TODO: IMPL
+  return PPP_MODEM;
+}
+
+PPPErr PPPNetIf::disconnect()
+{
+  if(m_fd)
+    pppClose(m_fd); //0 if ok, else should gen a WARN
+  m_connected = false;
+  
+  m_pIf->flushBuffer();
+  m_pIf->printf("+++\r\n");
+  wait(.5);
+  m_pIf->flushBuffer();
+  
+  GPRSErr gprsErr;  
+  gprsErr = m_pIf->disconnect();
+  if(gprsErr)
+    return PPP_NETWORK;
+    
+  return PPP_OK;
+}
+
+#if 0
+PPPErr PPPNetIf::close()
+{
+  GPRSErr err = m_pIf->close();
+  if(err)
+    return PPP_MODEM;
+  m_open = false;
+  return PPP_OK;
+}
+#endif
+
+
+#if 0
+//We have to use :
+
+/** Pass received raw characters to PPPoS to be decoded. This function is
+ * thread-safe and can be called from a dedicated RX-thread or from a main-loop.
+ *
+ * @param pd PPP descriptor index, returned by pppOpen()
+ * @param data received data
+ * @param len length of received data
+ */
+void
+pppos_input(int pd, u_char* data, int len)
+{
+  pppInProc(&pppControl[pd].rx, data, len);
+}
+#endif
+
+void PPPNetIf::poll()
+{
+  if(!m_connected)
+    return;
+  LwipNetIf::poll();
+  //static u8_t buf[128];
+  int len;
+  do
+  {
+    len = sio_tryread((sio_fd_t) m_pIf, m_buf, BUF_SIZE);
+    if(len > 0)
+      pppos_input(m_fd, m_buf, len);
+  } while(len>0);
+}
+
+//Link Callback
+void PPPNetIf::pppCallback(int errCode, void *arg)
+{
+  switch ( errCode )
+  {
+    //No error
+    case PPPERR_NONE:
+      {
+        struct ppp_addrs* addrs = (struct ppp_addrs*) arg;
+        m_ip = IpAddr(&(addrs->our_ipaddr)); //Set IP
+      }
+      m_status = PPP_CONNECTED;
+      break;
+    default:
+      //Disconnected
+      DBG("PPPNetIf: Callback errCode = %d.\n", errCode);
+      m_status = PPP_DISCONNECTED;
+    break;
+  }
+}
+
+#endif