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|
/****************************************************
* SQLGetPrivateProfileString
*
* Mostly used with odbc.ini files but can be used for odbcinst.ini
*
* IF pszFileName[0] == '/' THEN
* use pszFileName
* ELSE
* use _odbcinst_ConfigModeINI() to get the complete file name for the current mode.
*
**************************************************
* This code was created by Peter Harvey @ CodeByDesign.
* Released under LGPL 28.JAN.99
*
* Contributions from...
* -----------------------------------------------
* Peter Harvey - pharvey@codebydesign.com
**************************************************/
#include <time.h>
#include <odbcinstext.h>
#ifdef ENABLE_INI_CACHING
static struct ini_cache *ini_cache_head = NULL;
int check_ini_cache( int *ret,
LPCSTR pszSection,
LPCSTR pszEntry,
LPCSTR pszDefault,
LPSTR pRetBuffer,
int nRetBuffer,
LPCSTR pszFileName )
{
struct ini_cache *ini_cache = ini_cache_head, *prev = NULL;
UWORD config_mode;
long tstamp = time( NULL );
if ( pszSection == NULL || pszEntry == NULL )
{
return 0;
}
SQLGetConfigMode( &config_mode );
/*
* look for expired entries, remove one each call
*/
for ( prev = NULL, ini_cache = ini_cache_head; ini_cache; ini_cache = ini_cache -> next )
{
if ( ini_cache -> timestamp < tstamp )
{
if ( prev )
{
prev -> next = ini_cache -> next;
}
else
{
ini_cache_head = ini_cache -> next;
}
if ( ini_cache -> fname )
free( ini_cache -> fname );
if ( ini_cache -> section )
free( ini_cache -> section );
if ( ini_cache -> entry )
free( ini_cache -> entry );
if ( ini_cache -> value )
free( ini_cache -> value );
if ( ini_cache -> default_value )
free( ini_cache -> default_value );
free( ini_cache );
break;
}
prev = ini_cache;
}
for ( ini_cache = ini_cache_head; ini_cache; ini_cache = ini_cache -> next )
{
if ( !pszFileName && ini_cache -> fname )
continue;
if ( pszFileName && !ini_cache -> fname )
continue;
if ( pszFileName && ini_cache -> fname && strcmp( pszFileName, ini_cache -> fname ))
continue;
if ( ini_cache -> config_mode != config_mode )
continue;
if ( !pszSection && ini_cache -> section )
continue;
if ( pszSection && !ini_cache -> section )
continue;
if ( pszSection && ini_cache -> section && strcmp( pszSection, ini_cache -> section ))
continue;
if ( !pszEntry && ini_cache -> entry )
continue;
if ( pszEntry && !ini_cache -> entry )
continue;
if ( pszEntry && ini_cache -> entry && strcmp( pszEntry, ini_cache -> entry ))
continue;
if ( !pszDefault && ini_cache -> default_value )
continue;
if ( pszDefault && !ini_cache -> default_value )
continue;
if ( pszDefault && ini_cache -> default_value && strcmp( pszDefault, ini_cache -> default_value ))
continue;
if ( !pRetBuffer && ini_cache -> value )
continue;
if ( pRetBuffer && !ini_cache -> value )
continue;
if ( nRetBuffer != ini_cache -> buffer_size )
continue;
if ( pRetBuffer )
{
if ( ini_cache -> value )
strcpy( pRetBuffer, ini_cache -> value );
*ret = ini_cache -> ret_value;
return 1;
}
}
return 0;
}
int save_ini_cache( int ret,
LPCSTR pszSection,
LPCSTR pszEntry,
LPCSTR pszDefault,
LPSTR pRetBuffer,
int nRetBuffer,
LPCSTR pszFileName )
{
struct ini_cache *ini_cache;
UWORD config_mode;
long tstamp = time( NULL ) + 20; /* expiry every 20 seconds */
ini_cache = calloc( sizeof( struct ini_cache ), 1 );
if ( !ini_cache )
{
return 0;
}
if ( pszFileName )
ini_cache -> fname = strdup( pszFileName );
if ( pszSection )
ini_cache -> section = strdup( pszSection );
if ( pszEntry )
ini_cache -> entry = strdup( pszEntry );
if ( pRetBuffer && ret >= 0 )
ini_cache -> value = strdup( pRetBuffer );
if ( pszDefault )
ini_cache -> default_value = strdup( pszDefault );
ini_cache -> buffer_size = nRetBuffer;
ini_cache -> ret_value = ret;
SQLGetConfigMode( &config_mode );
ini_cache -> config_mode = config_mode;
ini_cache -> timestamp = tstamp;
ini_cache -> next = ini_cache_head;
ini_cache_head = ini_cache;
return 0;
}
#else
int check_ini_cache( int *ret,
LPCSTR pszSection,
LPCSTR pszEntry,
LPCSTR pszDefault,
LPSTR pRetBuffer,
int nRetBuffer,
LPCSTR pszFileName )
{
return 0;
}
int save_ini_cache( int ret,
LPCSTR pszSection,
LPCSTR pszEntry,
LPCSTR pszDefault,
LPSTR pRetBuffer,
int nRetBuffer,
LPCSTR pszFileName )
{
return 0;
}
#endif
int SQLGetPrivateProfileString( LPCSTR pszSection,
LPCSTR pszEntry,
LPCSTR pszDefault,
LPSTR pRetBuffer,
int nRetBuffer,
LPCSTR pszFileName
)
{
HINI hIni;
int nBufPos = 0;
char szValue[INI_MAX_PROPERTY_VALUE+1];
char szFileName[ODBC_FILENAME_MAX+1];
UWORD nConfigMode;
int ini_done = 0;
int ret;
if ( check_ini_cache( &ret, pszSection, pszEntry, pszDefault, pRetBuffer, nRetBuffer, pszFileName ))
{
return ret;
}
/* SANITY CHECKS */
if ( pRetBuffer == NULL || nRetBuffer < 2 )
{
inst_logPushMsg( __FILE__, __FILE__, __LINE__, LOG_CRITICAL, ODBC_ERROR_GENERAL_ERR, "" );
return -1;
}
if ( pszSection != NULL && pszEntry != NULL && pszDefault == NULL )
{
inst_logPushMsg( __FILE__, __FILE__, __LINE__, LOG_CRITICAL, ODBC_ERROR_GENERAL_ERR, "" );
return -1;
}
*pRetBuffer = '\0';
/*****************************************************
* SOME MS CODE (ie some drivers) MAY USE THIS FUNCTION TO GET ODBCINST INFO SO...
*****************************************************/
if ( pszFileName != NULL )
{
if ( strstr( pszFileName, "odbcinst" ) || strstr( pszFileName, "ODBCINST" ) )
{
ret = _SQLGetInstalledDrivers( pszSection, pszEntry, pszDefault, pRetBuffer, nRetBuffer );
if ( ret == -1 )
{
/*
* Copy default value
*/
if ( pRetBuffer && nRetBuffer > 0 )
{
strncpy( pRetBuffer, pszDefault, nRetBuffer );
pRetBuffer[ nRetBuffer - 1 ] = '\0';
}
}
else
{
save_ini_cache( ret, pszSection, pszEntry, pszDefault, pRetBuffer, nRetBuffer, pszFileName );
}
return ret;
}
}
/*****************************************************
* GATHER ALL RELEVANT DSN INFORMATION INTO AN hIni
*****************************************************/
if ( pszFileName != 0 && pszFileName[0] == '/' )
{
#ifdef __OS2__
if ( iniOpen( &hIni, (char*)pszFileName, "#;", '[', ']', '=', TRUE, 1L )
!= INI_SUCCESS )
#else
if ( iniOpen( &hIni, (char*)pszFileName, "#;", '[', ']', '=', TRUE )
!= INI_SUCCESS )
#endif
{
inst_logPushMsg( __FILE__, __FILE__, __LINE__, LOG_CRITICAL,
ODBC_ERROR_COMPONENT_NOT_FOUND, "" );
return -1;
}
}
else
{
nConfigMode = ODBC_BOTH_DSN;
SQLGetConfigMode( &nConfigMode );
nBufPos = 0;
szFileName[0] = '\0';
switch ( nConfigMode )
{
case ODBC_BOTH_DSN:
if ( _odbcinst_UserINI( szFileName, TRUE ))
{
#ifdef __OS2__
if ( iniOpen( &hIni, (char*) szFileName, "#;", '[', ']', '=', TRUE, 1L )
== INI_SUCCESS )
#else
if ( iniOpen( &hIni, (char*) szFileName, "#;", '[', ']', '=', TRUE )
== INI_SUCCESS )
#endif
{
ini_done = 1;
}
}
_odbcinst_SystemINI( szFileName, TRUE );
if ( !ini_done )
{
#ifdef __OS2__
if ( iniOpen( &hIni, szFileName, "#;", '[', ']', '=', TRUE, 1L )
!= INI_SUCCESS )
#else
if ( iniOpen( &hIni, szFileName, "#;", '[', ']', '=', TRUE )
!= INI_SUCCESS )
#endif
{
inst_logPushMsg( __FILE__, __FILE__, __LINE__,
LOG_CRITICAL, ODBC_ERROR_COMPONENT_NOT_FOUND, "" );
return -1;
}
}
else
{
iniAppend( hIni, szFileName );
}
break;
case ODBC_USER_DSN:
_odbcinst_UserINI( szFileName, TRUE );
#ifdef __OS2__
if ( iniOpen( &hIni, szFileName, "#;", '[', ']', '=', TRUE, 1L )
!= INI_SUCCESS )
#else
if ( iniOpen( &hIni, szFileName, "#;", '[', ']', '=', TRUE )
!= INI_SUCCESS )
#endif
{
inst_logPushMsg( __FILE__, __FILE__, __LINE__, LOG_CRITICAL,
ODBC_ERROR_COMPONENT_NOT_FOUND, "" );
return -1;
}
break;
case ODBC_SYSTEM_DSN:
_odbcinst_SystemINI( szFileName, TRUE );
#ifdef __OS2__
if ( iniOpen( &hIni, szFileName, "#;", '[', ']', '=', TRUE, 1L )
!= INI_SUCCESS )
#else
if ( iniOpen( &hIni, szFileName, "#;", '[', ']', '=', TRUE )
!= INI_SUCCESS )
#endif
{
inst_logPushMsg( __FILE__, __FILE__, __LINE__, LOG_CRITICAL,
ODBC_ERROR_COMPONENT_NOT_FOUND, "" );
return -1;
}
break;
default:
inst_logPushMsg( __FILE__, __FILE__, __LINE__, LOG_CRITICAL,
ODBC_ERROR_GENERAL_ERR, "Invalid Config Mode" );
return -1;
}
}
/*****************************************************
* EXTRACT SECTIONS
*****************************************************/
if ( pszSection == NULL )
{
_odbcinst_GetSections( hIni, pRetBuffer, nRetBuffer, &nBufPos );
}
/*****************************************************
* EXTRACT ENTRIES
*****************************************************/
else if ( pszEntry == NULL )
{
_odbcinst_GetEntries( hIni, pszSection, pRetBuffer, nRetBuffer, &nBufPos );
}
/*****************************************************
* EXTRACT AN ENTRY
*****************************************************/
else
{
if ( pszSection == NULL || pszEntry == NULL || pszDefault == NULL )
{
inst_logPushMsg( __FILE__, __FILE__, __LINE__, LOG_CRITICAL, ODBC_ERROR_GENERAL_ERR, "" );
return -1;
}
/* TRY TO GET THE ONE ITEM MATCHING Section & Entry */
if ( iniPropertySeek( hIni, (char *)pszSection, (char *)pszEntry, "" ) != INI_SUCCESS )
{
/*
* (NG) this seems to be ignoring the length of pRetBuffer !!!
*/
/* strncpy( pRetBuffer, pszDefault, INI_MAX_PROPERTY_VALUE ); */
if ( pRetBuffer && nRetBuffer > 0 )
{
strncpy( pRetBuffer, pszDefault, nRetBuffer );
pRetBuffer[ nRetBuffer - 1 ] = '\0';
}
}
else
{
iniValue( hIni, szValue );
strncpy( pRetBuffer, szValue, nRetBuffer );
pRetBuffer[ nRetBuffer - 1 ] = '\0';
nBufPos = strlen( szValue );
}
}
iniClose( hIni );
ret = strlen( pRetBuffer );
save_ini_cache( ret, pszSection, pszEntry, pszDefault, pRetBuffer, nRetBuffer, pszFileName );
return ret;
}
|
