epoc-iap.cpp

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#include "epoc-iap.h"

#include "er_errors.h"

#include <commdb.h>
#include <utf.h>

/*
 !concept {:name => "Resolving AP names",
   :desc => "Resolving an access point name to its ID on Symbian."}
*/

#define MAX_IAP_NAME_LENGTH KCommsDbSvrMaxFieldLength

static TBool FindIapByNameL(const TDesC& aIapName, TUint32& aIapId)
{
  TBool found = EFalse;

  CCommsDatabase* commsDb = CCommsDatabase::NewL(EDatabaseTypeIAP);
  CleanupStack::PushL(commsDb);

  {
    CCommsDbTableView* tableView = 
      commsDb->OpenIAPTableViewMatchingBearerSetLC(ECommDbBearerGPRS | ECommDbBearerWLAN, ECommDbConnectionDirectionOutgoing);
    for (TInt errCode(tableView->GotoFirstRecord());
   !errCode;
   errCode = tableView->GotoNextRecord()) {
      TBuf<MAX_IAP_NAME_LENGTH> iapName;
      tableView->ReadTextL(TPtrC(COMMDB_NAME), iapName);
      if (iapName == aIapName) {
  tableView->ReadUintL(TPtrC(COMMDB_ID), aIapId);
  found = ETrue;
  break;
      }
    }
    CleanupStack::PopAndDestroy(tableView);
  }

  CleanupStack::PopAndDestroy(commsDb);

  return found;
}

extern "C" 
gboolean epoc_iap_by_name(const gchar* iapName, 
        guint32* iapId, 
        gboolean* found,
        GError** error)
{
  *found = FALSE;

  TPtrC8 iapNameDes8((TUint8*)iapName);
  TBuf<MAX_IAP_NAME_LENGTH> iapNameDes;
  TInt errCode = CnvUtfConverter::ConvertToUnicodeFromUtf8(iapNameDes, iapNameDes8);
  if (errCode) {
    if (error)
      *error = gx_error_new(domain_symbian, errCode, "Unicode conversion failure on IAP name: %s (%d)", plat_error_strerror(errCode), errCode);
    return FALSE;
  }

  TUint32 epocIapId;
  TRAP(errCode, *found = FindIapByNameL(iapNameDes, epocIapId));
  if (errCode) {
    if (error)
      *error = gx_error_new(domain_symbian, errCode, "error resolving IAP name to ID: %s (%d)", plat_error_strerror(errCode), errCode);
    return FALSE;
  } else if (*found) {
    *iapId = epocIapId;
  }

  return TRUE;
}

/*
 !concept {:name => "Checking AP types",
   :desc => "Checking whether an access point with a given ID is a modem one (GSM) or not (WLAN)."}
*/

static TBool IsModemIapL(TUint32 aIapId)
{
  TBool res;

  CCommsDatabase* commsDb = CCommsDatabase::NewL(EDatabaseTypeIAP);
  CleanupStack::PushL(commsDb);

  {
    CCommsDbTableView* tableView = commsDb->OpenViewMatchingUintLC(TPtrC(IAP), TPtrC(COMMDB_ID), aIapId);
    // We assume exactly one matching record, but the caller may catch KErrNotFound.
    User::LeaveIfError(tableView->GotoFirstRecord());
    TBuf<KCommsDbSvrMaxFieldLength> bearerType;
    tableView->ReadTextL(TPtrC(IAP_BEARER_TYPE), bearerType);
    _LIT(KPat, "ModemBearer");
    res = (bearerType == KPat);
    CleanupStack::PopAndDestroy(tableView);
  }

  CleanupStack::PopAndDestroy(commsDb);

  return res;
}

extern "C" 
gboolean epoc_iap_is_modem(guint32 iapId,
         gboolean* found,
         gboolean* yes,
         GError** error)
{
  TBool res = EFalse;
  TRAPD(errCode, res = IsModemIapL(iapId));
  if (errCode == KErrNotFound) {
    *found = FALSE;
    return TRUE;
  } else if (errCode) {
    if (error)
      *error = gx_error_new(domain_symbian, errCode, "error looking up bearer for IAP ID %u: %s (%d)", iapId, plat_error_strerror(errCode), errCode);
    return FALSE;
  }
  *found = TRUE;
  *yes = res;
  return TRUE;
}

#if __DO_LOGGING__
// This function is not kind on the stack.
static void LogBearerTypesL()
{
  CCommsDatabase* commsDb = CCommsDatabase::NewL(EDatabaseTypeIAP);
  CleanupStack::PushL(commsDb);

  {
    CCommsDbTableView* tableView = commsDb->OpenTableLC(TPtrC(IAP));
    TUint32 iapId;
    TBuf<KCommsDbSvrMaxFieldLength> iapName; // really should reuse this
    TBuf8<KCommsDbSvrMaxFieldLength+1> iapName8;
    TBuf<KCommsDbSvrMaxFieldLength> bearerType;
    TBuf8<KCommsDbSvrMaxFieldLength+1> bearerType8;
    TBuf<KCommsDbSvrMaxFieldLength> serviceType;
    TBuf8<KCommsDbSvrMaxFieldLength+1> serviceType8;
    for (TInt errCode(tableView->GotoFirstRecord());
   !errCode;
   errCode = tableView->GotoNextRecord()) {
      tableView->ReadUintL(TPtrC(COMMDB_ID), iapId);
      tableView->ReadTextL(TPtrC(COMMDB_NAME), iapName);
      iapName8.Copy(iapName);
      tableView->ReadTextL(TPtrC(IAP_BEARER_TYPE), bearerType);
      bearerType8.Copy(bearerType);
      tableView->ReadTextL(TPtrC(IAP_SERVICE_TYPE), serviceType);
      serviceType8.Copy(serviceType);
      logg("iap %u, '%s', bearer '%s', service '%s'", iapId, 
     iapName8.PtrZ(), bearerType8.PtrZ(), serviceType8.PtrZ());
    }
    CleanupStack::PopAndDestroy(tableView);
  }

  CleanupStack::PopAndDestroy(commsDb);
}
#endif

extern "C" 
void epoc_log_bearer_types()
{
#if __DO_LOGGING__
  TRAPD(errCode, LogBearerTypesL());
  if (errCode)
    logg("error %d logging bearer types", errCode);
#endif
}

/**

epoc-iap.cpp

Copyright 2009 Helsinki Institute for Information Technology (HIIT)
and the authors. All rights reserved.

Authors: Tero Hasu <tero.hasu@hut.fi>

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.

 **/