view src/aci2/aci/cmh_gmmq.c @ 516:1ed9de6c90bd

src/g23m-gsm/sms/sms_for.c: bogus malloc removed The new error handling code that was not present in TCS211 blob version contains a malloc call that is bogus for 3 reasons: 1) The memory allocation in question is not needed in the first place; 2) libc malloc is used instead of one of the firmware's proper ways; 3) The memory allocation is made inside a function and then never freed, i.e., a memory leak. This bug was caught in gcc-built FreeCalypso fw projects (Citrine and Selenite) because our gcc environment does not allow any use of libc malloc (any reference to malloc produces a link failure), but this code from TCS3.2 is wrong even for Magnetite: if this code path is executed repeatedly over a long time, the many small allocations made by this malloc call without a subsequent free will eventually exhaust the malloc heap provided by the TMS470 environment, malloc will start returning NULL, and the bogus code will treat it as an error. Because the memory allocation in question is not needed at all, the fix entails simply removing it.
author Mychaela Falconia <falcon@freecalypso.org>
date Sun, 22 Jul 2018 06:04:49 +0000
parents 93999a60b835
children
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/* 
+----------------------------------------------------------------------------- 
|  Project :  
|  Modul   :  
+----------------------------------------------------------------------------- 
|  Copyright 2002 Texas Instruments Berlin, AG 
|                 All rights reserved. 
| 
|                 This file is confidential and a trade secret of Texas 
|                 Instruments Berlin, AG 
|                 The receipt of or possession of this file does not convey 
|                 any rights to reproduce or disclose its contents or to 
|                 manufacture, use, or sell anything it may describe, in 
|                 whole, or in part, without the specific written consent of 
|                 Texas Instruments Berlin, AG. 
+----------------------------------------------------------------------------- 
|  Purpose :  This module provides the query functions related to the
|             protocol stack adapter for GPRS mobility management ( GMM ).
+----------------------------------------------------------------------------- 
*/ 

#if defined (GPRS) && defined (DTI)

#ifndef CMH_GMMQ_C
#define CMH_GMMQ_C
#endif

#include "aci_all.h"

/*==== INCLUDES ===================================================*/
#include "dti.h"      /* functionality of the dti library */
#include "aci_cmh.h"
#include "ati_cmd.h"
#include "aci_cmd.h"

#include "dti_conn_mng.h"

#include "pcm.h"

#include "gaci.h"
#include "gaci_cmh.h"
#include "psa.h"
#include "psa_gmm.h"

#include "cmh.h"
#include "cmh_gmm.h"

/*==== CONSTANTS ==================================================*/

/*==== EXPORT =====================================================*/

/*==== VARIABLES ==================================================*/

/*==== FUNCTIONS ==================================================*/

/*
+--------------------------------------------------------------------+
| PROJECT : GPRS (8441)           MODULE  : CMH_GMMQ                 |
| STATE   : finished              ROUTINE : qAT_PlusCGATT            |
+--------------------------------------------------------------------+

  PURPOSE : This is the functional counterpart to the +CGATT? AT
            command which returns the current state of GPRS attachment.
*/

GLOBAL T_ACI_RETURN qAT_PlusCGATT  ( T_ACI_CMD_SRC srcId, T_CGATT_STATE *state )
{
  TRACE_FUNCTION ("qAT_PlusCGATT()");

  if ( !cmh_IsVldCmdSrc (srcId) )
  {
    ACI_ERR_DESC( ACI_ERR_CLASS_Ext, EXT_ERR_Parameter );
    return( AT_FAIL );
  }

  switch ( cmhGMM_Get_state() )
  {
    case AS_ATTACHED:
    case AS_SUSPENTED:
      *state = CGATT_STATE_ATTACHED;
      break;
    case AS_INVALID_STATE:
    case AS_MOBILE_OFF:
    case AS_DETACHED:
    case AS_ATTACHING:
    case AS_DETACHING:
    default:
      *state = CGATT_STATE_DETACHED;
      break;
   }

   return( AT_CMPL );
}

/*
+--------------------------------------------------------------------+
| PROJECT : GPRS (8441)           MODULE  : CMH_GMMQ                 |
| STATE   : code                  ROUTINE : qAT_PlusCGCLASS          |
+--------------------------------------------------------------------+

  PURPOSE : This is the functional counterpart to the +CGCLASS? AT
            command which returns current GACI mobile class.
*/

GLOBAL T_ACI_RETURN qAT_PlusCGCLASS  ( T_ACI_CMD_SRC srcId, T_CGCLASS_CLASS *m_class )
{
   TRACE_FUNCTION ("qAT_PlusCGCLASS()");

/*
 *-------------------------------------------------------------------
 * check command source - should be Serial link ?
 *-------------------------------------------------------------------
 */
   if ( !cmh_IsVldCmdSrc (srcId) ) {
      ACI_ERR_DESC( ACI_ERR_CLASS_Ext, EXT_ERR_Parameter );
      return( AT_FAIL );
   }

/*
 *-------------------------------------------------------------------
 * fill in parameters
 *-------------------------------------------------------------------
 */
  switch ( gmmShrdPrm.mobile_class )
  {
    case GMMREG_CLASS_A:
      *m_class = CGCLASS_CLASS_A;     /* mobile class A  (highest) */
      break;
    case GMMREG_CLASS_B:
    case GMMREG_CLASS_BC:
    case GMMREG_CLASS_BG:
      *m_class = CGCLASS_CLASS_B;     /* mobile class B */
      break;
    case GMMREG_CLASS_CG:
      *m_class = CGCLASS_CLASS_CG;    /* mobile class CG (GPRS only mode) */
      break;
    case GMMREG_CLASS_CC:
      *m_class = CGCLASS_CLASS_CC;    /* mobile class CC (circuit switched only mode - lowest) */
      break;
    default: /*bad user command */
      ACI_ERR_DESC( ACI_ERR_CLASS_Ext, EXT_ERR_Parameter );
      return AT_FAIL;
  }

  return( AT_CMPL );
}

/*
+--------------------------------------------------------------------+
| PROJECT : GPRS (8441)           MODULE  : CMH_GMMQ                 |
| STATE   : finished              ROUTINE : qAT_PercentCGAATT        |
+--------------------------------------------------------------------+

  PURPOSE : This command get the mode of automatic attach / detach.
*/

GLOBAL T_ACI_RETURN qAT_PercentCGAATT  ( T_ACI_CMD_SRC srcId, T_CGAATT_ATTACH_MODE *att_m, T_CGAATT_DETACH_MODE *det_m )

{
  TRACE_FUNCTION ("qAT_PercentCGAATT()");  

  *att_m = automatic_attach_mode;
  *det_m = automatic_detach_mode;

  return( AT_CMPL );   
}

GLOBAL T_ACI_RETURN qAT_PlusCGREG( T_ACI_CMD_SRC srcId, T_CGREG_STAT *stat, USHORT *lac, USHORT *ci )
{
  TRACE_FUNCTION ("qAT_PlusCGREG()");

  *stat = gmmShrdPrm.cgreg_stat;
  *lac  = gmmShrdPrm.lac;
  *ci   = gmmShrdPrm.cid;

  return( AT_CMPL );
}

GLOBAL T_ACI_RETURN qAT_PercentCGREG   ( T_ACI_CMD_SRC srcId, T_P_CGREG_STAT *stat, USHORT *lac, USHORT *ci )
{
  TRACE_FUNCTION ("qAT_PercentCGREG()");

  *stat = gmmShrdPrm.p_cgreg_stat;
  *lac  = gmmShrdPrm.lac;
  *ci   = gmmShrdPrm.cid;

  return( AT_CMPL );
}

/*
+--------------------------------------------------------------------+
| PROJECT : GPRS (8441)           MODULE  : CMH_GMMQ                 |
| STATE   : code                  ROUTINE : qAT_PercentCGCLASS       |
+--------------------------------------------------------------------+

  PURPOSE : This is the functional counterpart to the %CGCLASS? AT
            command which returns current GPRS mobile class.
*/
GLOBAL T_ACI_RETURN qAT_PercentCGCLASS  ( T_ACI_CMD_SRC srcId, T_PERCENT_CGCLASS *m_class, T_PERCENT_CGCLASS *currentClass )
{
   TRACE_FUNCTION ("qAT_PercentCGCLASS()");

  *m_class = *currentClass = gaciMobileClass.current;
  if( PERCENT_CGCLASS_BX EQ gaciMobileClass.current)
  {
    switch ( gmmShrdPrm.mobile_class )
    {
      case GMMREG_CLASS_BC:
        *currentClass = PERCENT_CGCLASS_BC;
        break;
      case GMMREG_CLASS_BG:
        *currentClass = PERCENT_CGCLASS_BG;
        break;
    }
  }

  return( AT_CMPL );
}
#endif  /* GPRS */
/*==== EOF ========================================================*/