view src/aci2/aci/cmh_tcpips.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 :  GSM-PS (6147)
|  Modul   :  CMH_TCPS
+----------------------------------------------------------------------------- 
|  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 set functions related to the 
|             protocol stack adapter for TCPIP.
+----------------------------------------------------------------------------- 
*/ 

#ifndef CMH_TCPS_C
#define CMH_TCPS_C
#endif

#include "aci_all.h"

/*==== INCLUDES ===================================================*/

#include "aci_cmh.h"

#ifdef FAX_AND_DATA
  #include "aci_fd.h"
#endif

#include "ati_cmd.h"
#include "aci_cmd.h"
#include "aci_io.h"

#include "psa.h"
#include "psa_ra.h"
#include "psa_cc.h"
#include "cmh.h"
#include "cmh_ra.h"

#include "wap_aci.h"

#include "dti.h"
#include "dti_conn_mng.h"
#include "dti_cntrl_mng.h"

#include "cmh_ipa.h"

#ifdef SIM_TOOLKIT
#include "psa_sat.h"
#include "psa_sim.h"
#endif

#ifdef FF_GPF_TCPIP
#include "dcm_utils.h"
#include "dcm_state.h"
#include "dcm_env.h"
#endif /* FF_GPF_TCPIP */

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

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

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

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

/*
+-------------------------------------------------------------------+
| PROJECT : GSM-PS (6147)         MODULE  : CMH_TCPS               |
|                                 ROUTINE : cmhTCPIP_Activate        |
+-------------------------------------------------------------------+

  PURPOSE : activates DTI connection TCPIP-IP

*/

#if 0
T_ACI_RETURN cmhTCPIP_Activate (T_ACI_CMD_SRC srcId, SHORT cId)
{
  T_BEARER_TYPE current_bear_type = NO_BEARER_TYPE;
  TRACE_FUNCTION ("cmhTCPIP_Activate()");

  if (Wap_Call EQ TRUE)
  {
    wap_state = TCPIP_Activation;

#if defined (SIM_TOOLKIT) AND defined(FF_SAT_E)
    /* SAT Class E */
    if (satShrdPrm.opchStat EQ OPCH_EST_REQ)
    {
      T_DTI_ENTITY_ID entity_list[] = {DTI_ENTITY_TCPIP, DTI_ENTITY_IP};

      /* create a SAT class E DTI ID if not present */
      if (simShrdPrm.sat_class_e_dti_id EQ DTI_DTI_ID_NOTPRESENT)
      {
        simShrdPrm.sat_class_e_dti_id = dti_cntrl_new_dti (DTI_DTI_ID_NOTPRESENT);
        TRACE_EVENT_P1 ("sat_class_e_dti_id = %d", simShrdPrm.sat_class_e_dti_id);
      }

      dti_cntrl_est_dpath (
        simShrdPrm.sat_class_e_dti_id,
        entity_list,
        2,
        SPLIT,
        TCPIP_connect_dti_cb
      );
    }
    else
#endif
    {
      /* normal WAP Call */
      // TODO: check this function: get_current_bearer_type()
      //current_bear_type = get_current_bearer_type();

      if(current_bear_type == GPRS_BEARER_TYPE)
      {
        T_DTI_ENTITY_ID entity_list[] = {DTI_ENTITY_TCPIP, DTI_ENTITY_SNDCP};
      /* create a WAP DTI if not present */
      if (wap_dti_id EQ DTI_DTI_ID_NOTPRESENT)
      {
        wap_dti_id = dti_cntrl_new_dti (DTI_DTI_ID_NOTPRESENT);
        TRACE_EVENT_P1 ("wap_dti_id = %d", wap_dti_id);
      }
      dti_cntrl_est_dpath(wap_dti_id,
                          entity_list,
                          2,
                          SPLIT,
                          TCPIP_connect_dti_cb);
      }
      else if(current_bear_type == GSM_BEARER_TYPE)
      {
        T_DTI_ENTITY_ID entity_list[] = {DTI_ENTITY_TCPIP, DTI_ENTITY_PPPC , DTI_ENTITY_L2R };
        
        /* create a WAP DTI if not present */
        if (wap_dti_id EQ DTI_DTI_ID_NOTPRESENT)
        {
          wap_dti_id = dti_cntrl_new_dti (DTI_DTI_ID_NOTPRESENT);
          TRACE_EVENT_P1 ("wap_dti_id = %d", wap_dti_id);
        }
        dti_cntrl_est_dpath(wap_dti_id,
                            entity_list,
                            3,
                            SPLIT,
                            TCPIP_connect_dti_cb);
      }
      else
      {
        TRACE_EVENT ("Ivalid Bearer Type is not set,so don't establish a data path");
        return AT_FAIL;    
      }
    }
  }
  else
  {
    TRACE_EVENT ("Wap_Call is not set so don't establish a data path");
    return AT_FAIL;
  }

  return AT_EXCT;
}
#endif

/*
+-------------------------------------------------------------------+
| PROJECT : GSM-PS (6147)         MODULE  : CMH_TCPS               |
|                                 ROUTINE : cmhTCPIP_Deactivate      |
+-------------------------------------------------------------------+

  PURPOSE : deactivates DTI connection TCPIP-IP

*/

T_ACI_RETURN cmhTCPIP_Deactivate (UBYTE src_id)
{
  TRACE_FUNCTION ("cmhTCPIP_Deactivate()");

  wap_state = TCPIP_Deactivation;

  if ( wap_dti_id NEQ DTI_DTI_ID_NOTPRESENT )
  {
    dti_cntrl_close_dpath_from_dti_id (wap_dti_id);
  }
  else if (simShrdPrm.sat_class_e_dti_id NEQ DTI_DTI_ID_NOTPRESENT)
  {
    dti_cntrl_close_dpath_from_dti_id (simShrdPrm.sat_class_e_dti_id);
  }
  else
  {
    TRACE_EVENT ("No dti id available");
    return AT_FAIL;
  } 

  return AT_EXCT;
}