-/** Connect(load) driver
-
- Copyright (C) 1995 by Ke Jin <kejin@empress.com>
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-**/
+/*
+ * connect.c
+ *
+ * $Id$
+ *
+ * Connect (load) driver
+ *
+ * The iODBC driver manager.
+ *
+ * Copyright (C) 1995 by Ke Jin <kejin@empress.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public
+ * License along with this library; if not, write to the Free
+ * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
-#include <../iodbc/iodbc.h>
+#include "config.h"
-#include <../iodbc/isql.h>
-#include <../iodbc/isqlext.h>
+#include "isql.h"
+#include "isqlext.h"
-#include <../iodbc/dlproc.h>
+#include "dlproc.h"
-#include <../iodbc/herr.h>
-#include <../iodbc/henv.h>
-#include <../iodbc/hdbc.h>
-#include <../iodbc/hstmt.h>
+#include "herr.h"
+#include "henv.h"
+#include "hdbc.h"
+#include "hstmt.h"
-#include <../iodbc/itrace.h>
+#include "itrace.h"
extern char* _iodbcdm_getkeyvalbydsn();
extern char* _iodbcdm_getkeyvalinstr();
* violation.
*/
static char sccsid[]
- = "@(#)iODBC driver manager " "2.12" ", Copyright(c) 1995 by Ke Jin";
+ = "@(#)iODBC driver manager 2.5, Copyright(c) 1995 by Ke Jin";
-static RETCODE _iodbcdm_driverload(
- char FAR* path,
- HDBC hdbc )
/* - Load driver share library( or increase its reference count
* if it has already been loaded by another active connection)
* - Call driver's SQLAllocEnv() (for the first reference only)
* - Call driver's SQLSetConnectOption() (set login time out)
* - Increase the bookkeeping reference count
*/
+static RETCODE
+_iodbcdm_driverload (
+ char FAR * path,
+ HDBC hdbc)
{
- DBC_t FAR* pdbc = (DBC_t FAR*)hdbc;
- GENV_t FAR* genv;
- ENV_t FAR* penv = NULL;
- HDLL hdll;
- HPROC hproc;
- RETCODE retcode = SQL_SUCCESS;
- int sqlstat = en_00000;
-
- if( path == NULL || path[0] == '\0' )
- {
- PUSHSQLERR ( pdbc->herr, en_IM002 );
+ DBC_t FAR *pdbc = (DBC_t FAR *) hdbc;
+ GENV_t FAR *genv;
+ ENV_t FAR *penv = NULL;
+ HDLL hdll;
+ HPROC hproc;
+ RETCODE retcode = SQL_SUCCESS;
+ int sqlstat = en_00000;
- return SQL_ERROR;
- }
+ if (path == NULL || path[0] == '\0')
+ {
+ PUSHSQLERR (pdbc->herr, en_IM002);
- if( hdbc == SQL_NULL_HDBC
- || pdbc->genv == SQL_NULL_HENV )
- {
- return SQL_INVALID_HANDLE;
- }
+ return SQL_ERROR;
+ }
- genv = (GENV_t FAR*)pdbc->genv;
+ if (hdbc == SQL_NULL_HDBC || pdbc->genv == SQL_NULL_HENV)
+ {
+ return SQL_INVALID_HANDLE;
+ }
- hdll = _iodbcdm_dllopen( (char FAR*) path );
- /* This will either load the
- * driver dll or increase its
- * reference count */
+ genv = (GENV_t FAR *) pdbc->genv;
- if( hdll == SQL_NULL_HDLL )
- {
- PUSHSYSERR ( pdbc->herr, _iodbcdm_dllerror() );
- PUSHSQLERR ( pdbc->herr, en_IM003 );
- return SQL_ERROR;
- }
+ /* This will either load the driver dll or increase its reference count */
+ hdll = _iodbcdm_dllopen ((char FAR *) path);
+
+ if (hdll == SQL_NULL_HDLL)
+ {
+ PUSHSYSERR (pdbc->herr, _iodbcdm_dllerror ());
+ PUSHSQLERR (pdbc->herr, en_IM003);
+ return SQL_ERROR;
+ }
- penv = (ENV_t FAR*)(pdbc->henv);
+ penv = (ENV_t FAR *) (pdbc->henv);
- if( penv != NULL )
+ if (penv != NULL)
+ {
+ if (penv->hdll != hdll)
{
- if( penv->hdll != hdll )
- {
- _iodbcdm_driverunload(hdbc);
- }
- else
- {
- _iodbcdm_dllclose( hdll );
- /* this will not unload the driver
- * but only decrease its internal
- * reference count
- */
- }
+ _iodbcdm_driverunload (hdbc);
}
-
- if(penv == NULL )
+ else
{
- /* find out whether this dll has already
- * been loaded on another connection */
- for( penv = (ENV_t FAR*)genv->henv;
- penv != NULL;
- penv = (ENV_t FAR*)penv->next )
- {
- if( penv->hdll == hdll )
- {
- _iodbcdm_dllclose( hdll );
- /* this will not unload the driver
- * but only decrease its internal
- * reference count
- */
- break;
- }
- }
-
- if( penv == NULL )
- /* no connection attaching with this dll */
- {
- int i;
-
- /* create a new dll env instance */
- penv = (ENV_t FAR*)MEM_ALLOC ( sizeof(ENV_t) );
-
- if( penv == NULL )
- {
- _iodbcdm_dllclose(hdll);
-
- PUSHSQLERR ( pdbc->herr, en_S1001 );
-
- return SQL_ERROR;
- }
-
- for( i = 0; i< SQL_EXT_API_LAST + 1; i++)
- {
- (penv->dllproc_tab)[i] = SQL_NULL_HPROC;
- }
-
- pdbc->henv = penv;
- penv->hdll = hdll;
-
- /* call driver's SQLAllocHandle() or SQLAllocEnv() */
-#if (ODBCVER >= 0x0300)
- hproc = _iodbcdm_getproc( hdbc, en_AllocHandle );
-
- if( hproc )
- {
- CALL_DRIVER ( hdbc, retcode, hproc, en_AllocHandle,
- ( SQL_HANDLE_ENV, SQL_NULL_HANDLE, &(penv->dhenv) )
- }
- else /* try driver's SQLAllocEnv() */
-#endif
- {
- hproc = _iodbcdm_getproc( hdbc, en_AllocEnv );
-
- if( hproc == SQL_NULL_HPROC)
- {
- sqlstat = en_IM004;
- }
- else
- {
- CALL_DRIVER ( hdbc, retcode, hproc,
- en_AllocEnv, (&(penv->dhenv)) )
- }
- }
-
- if( retcode == SQL_ERROR )
- {
- sqlstat = en_IM004;
- }
-
- if( sqlstat != en_00000 )
- {
- _iodbcdm_dllclose ( hdll );
- MEM_FREE ( penv );
- PUSHSQLERR ( pdbc->herr, en_IM004 );
-
- return SQL_ERROR;
- }
-
- /* insert into dll env list */
- penv->next = (ENV_t FAR*)genv->henv;
- genv->henv = penv;
-
- /* initiate this new env entry */
- penv->refcount = 0; /* we will increase it after
- * driver's SQLAllocConnect()
- * success
- */
- }
-
- pdbc->henv = penv;
-
- if( pdbc->dhdbc == SQL_NULL_HDBC )
- {
-#if (ODBCVER >= 0x0300)
- hproc = _iodbcdm_getproc( hdbc, en_AllocHandle );
-
- if( hproc )
- {
- CALL_DRIVER( hdbc, retcode, hproc, en_AllocHandle,
- (SQL_HANDLE_DBC, penv->dhenv, &(pdbc->dhdbc)) )
- }
- else
-#endif
- {
- hproc = _iodbcdm_getproc( hdbc, en_AllocConnect );
-
- if( hproc == SQL_NULL_HPROC )
- {
- sqlstat = en_IM005;
- }
- else
- {
- CALL_DRIVER ( hdbc, retcode, hproc,
- en_AllocConnect, (penv->dhenv, &(pdbc->dhdbc)) )
- }
- }
-
- if( retcode == SQL_ERROR )
- {
- sqlstat = en_IM005;
- }
-
- if( sqlstat != en_00000 )
- {
- _iodbcdm_driverunload(hdbc);
-
- pdbc->dhdbc = SQL_NULL_HDBC;
- PUSHSQLERR ( pdbc->herr, en_IM005 );
-
- return SQL_ERROR;
- }
- }
-
- pdbc->henv = penv;
- penv->refcount ++; /* bookkeeping reference count on this driver */
+ /*
+ * this will not unload the driver but only decrease its internal
+ * reference count
+ */
+ _iodbcdm_dllclose (hdll);
}
+ }
- /* driver's login timeout option must been set before
- * its SQLConnect() call */
- if( pdbc->login_timeout != 0UL )
+ if (penv == NULL)
+ {
+ /*
+ * find out whether this dll has already been loaded on another
+ * connection
+ */
+ for (penv = (ENV_t FAR *) genv->henv;
+ penv != NULL;
+ penv = (ENV_t FAR *) penv->next)
{
- hproc = _iodbcdm_getproc( hdbc, en_SetConnectOption );
-
- if( hproc == SQL_NULL_HPROC )
- {
- sqlstat = en_IM004;
- }
- else
- {
- CALL_DRIVER ( hdbc, retcode, hproc,
- en_SetConnectOption, (
- pdbc->dhdbc,
- SQL_LOGIN_TIMEOUT,
- pdbc->login_timeout ) )
-
- if( retcode == SQL_ERROR )
- {
- PUSHSQLERR ( pdbc->herr, en_IM006 );
-
- return SQL_SUCCESS_WITH_INFO;
- }
- }
+ if (penv->hdll == hdll)
+ {
+ /*
+ * this will not unload the driver but only decrease its internal
+ * reference count
+ */
+ _iodbcdm_dllclose (hdll);
+ break;
+ }
}
- return SQL_SUCCESS;
-}
-
-RETCODE _iodbcdm_driverunload( HDBC hdbc )
-/* - Call driver's SQLFreeConnect()
- * - Call driver's SQLFreeEnv() ( for the last reference only)
- * - Unload the share library( or decrease its reference
- * count if it is not the last referenct )
- * - decrease bookkeeping reference count
- * - state transition to allocated
- */
-{
- DBC_t FAR* pdbc = (DBC_t FAR*)hdbc;
- ENV_t FAR* penv;
- ENV_t FAR* tpenv;
- GENV_t FAR* genv;
- HPROC hproc;
- RETCODE retcode = SQL_SUCCESS;
- int sqlstat = en_00000;
-
- if( hdbc == SQL_NULL_HDBC )
+ if (penv == NULL)
+ /* no connection attaching with this dll */
{
- return SQL_INVALID_HANDLE;
- }
+ int i;
- /* no pointer check will be performed in this function */
- penv = (ENV_t FAR*)pdbc->henv;
- genv = (GENV_t FAR*)pdbc->genv;
+ /* create a new dll env instance */
+ penv = (ENV_t FAR *) MEM_ALLOC (sizeof (ENV_t));
- if( penv == NULL
- || penv->hdll == SQL_NULL_HDLL )
- {
- return SQL_SUCCESS;
- }
+ if (penv == NULL)
+ {
+ _iodbcdm_dllclose (hdll);
-#if (ODBCVER >= 0x0300)
- hproc = _iodbcdm_getproc( hdbc, en_FreeHandle );
+ PUSHSQLERR (pdbc->herr, en_S1001);
- if( hproc )
- {
- CALL_DRIVER ( hdbc, retcode, hproc, en_FreeHandle,
- ( SQL_HANDLE_DBC, pdbc->dhdbc ) )
- }
- else
-#endif
- {
- hproc = _iodbcdm_getproc( hdbc, en_FreeConnect );
+ return SQL_ERROR;
+ }
- if( hproc != SQL_NULL_HPROC )
- {
- CALL_DRIVER ( hdbc, retcode, hproc,
- en_FreeConnect, ( pdbc->dhdbc ) )
+ for (i = 0; i < SQL_EXT_API_LAST + 1; i++)
+ {
+ (penv->dllproc_tab)[i] = SQL_NULL_HPROC;
+ }
- pdbc->dhdbc = SQL_NULL_HDBC;
- }
- }
+ pdbc->henv = penv;
+ penv->hdll = hdll;
- penv->refcount --;
+ /* call driver's SQLAllocHandle() or SQLAllocEnv() */
- if( ! penv->refcount )
- /* no other connections still attaching with this driver */
- {
#if (ODBCVER >= 0x0300)
- hproc = _iodbcdm_getproc( hdbc, en_FreeHandle );
+ hproc = _iodbcdm_getproc (hdbc, en_AllocHandle);
+
+ if (hproc)
+ {
+ CALL_DRIVER (hdbc, retcode, hproc, en_AllocHandle,
+ (SQL_HANDLE_ENV, SQL_NULL_HANDLE, &(penv->dhenv)))
+ }
+ else /* try driver's SQLAllocEnv() */
+#endif
+ {
+ hproc = _iodbcdm_getproc (hdbc, en_AllocEnv);
- if( hproc )
+ if (hproc == SQL_NULL_HPROC)
{
- CALL_DRIVER ( hdbc, retcode, hproc, en_FreeHandle,
- ( SQL_HANDLE_ENV, penv->dhenv ) )
+ sqlstat = en_IM004;
}
- else
-#endif
+ else
{
- hproc = _iodbcdm_getproc( hdbc, en_FreeEnv );
-
- if( hproc != SQL_NULL_HPROC )
- {
- CALL_DRIVER ( hdbc, retcode, hproc, en_FreeEnv,
- ( penv->dhenv ) )
-
- penv->dhenv = SQL_NULL_HENV;
- }
+ CALL_DRIVER (hdbc, retcode, hproc,
+ en_AllocEnv, (&(penv->dhenv)))
}
-
- _iodbcdm_dllclose ( penv->hdll );
-
- penv->hdll = SQL_NULL_HDLL;
-
- for( tpenv = (ENV_t FAR*)genv->henv;
- tpenv != NULL;
- tpenv = (ENV_t FAR*)penv->next )
- {
- if( tpenv == penv )
- {
- genv->henv = penv->next;
- break;
- }
-
- if( tpenv->next == penv )
- {
- tpenv->next = penv->next;
- break;
- }
- }
-
- MEM_FREE( penv );
- }
-
- pdbc->henv = SQL_NULL_HENV;
- pdbc->hstmt= SQL_NULL_HSTMT;
- /* pdbc->herr = SQL_NULL_HERR;
- -- delay to DM's SQLFreeConnect() */
- pdbc->dhdbc= SQL_NULL_HDBC;
- pdbc->state= en_dbc_allocated;
-
- /* set connect options to default values */
- /**********
- pdbc->access_mode = SQL_MODE_DEFAULT;
- pdbc->autocommit = SQL_AUTOCOMMIT_DEFAULT;
- pdbc->login_timeout = 0UL;
- **********/
- pdbc->odbc_cursors = SQL_CUR_DEFAULT;
- pdbc->packet_size = 0UL;
- pdbc->quiet_mode = (UDWORD)NULL;
- pdbc->txn_isolation = SQL_TXN_READ_UNCOMMITTED;
-
- if( pdbc->current_qualifier != NULL )
- {
- MEM_FREE ( pdbc->current_qualifier );
- pdbc->current_qualifier = NULL;
+ }
+
+ if (retcode == SQL_ERROR)
+ {
+ sqlstat = en_IM004;
+ }
+
+ if (sqlstat != en_00000)
+ {
+ _iodbcdm_dllclose (hdll);
+ MEM_FREE (penv);
+ PUSHSQLERR (pdbc->herr, en_IM004);
+
+ return SQL_ERROR;
+ }
+
+ /* insert into dll env list */
+ penv->next = (ENV_t FAR *) genv->henv;
+ genv->henv = penv;
+
+ /* initiate this new env entry */
+ penv->refcount = 0; /* we will increase it after
+ * driver's SQLAllocConnect()
+ * success
+ */
}
- return SQL_SUCCESS;
-}
-
-static RETCODE _iodbcdm_dbcdelayset( HDBC hdbc )
-{
- DBC_t FAR* pdbc = (DBC_t FAR*)hdbc;
- ENV_t FAR* penv;
- HPROC hproc;
- RETCODE retcode = SQL_SUCCESS;
- RETCODE ret;
-
- penv = pdbc->henv;
-
- hproc = _iodbcdm_getproc( hdbc, en_SetConnectOption );
+ pdbc->henv = penv;
- if( hproc == SQL_NULL_HPROC )
+ if (pdbc->dhdbc == SQL_NULL_HDBC)
{
- PUSHSQLERR ( pdbc->herr, en_IM006 );
-
- return SQL_SUCCESS_WITH_INFO;
- }
- if( pdbc->access_mode != SQL_MODE_DEFAULT )
- {
- CALL_DRIVER ( hdbc, ret, hproc,
- en_SetConnectOption, (
- SQL_ACCESS_MODE,
- pdbc->access_mode) )
-
- retcode |= ret;
- }
+#if (ODBCVER >= 0x0300)
+ hproc = _iodbcdm_getproc (hdbc, en_AllocHandle);
+
+ if (hproc)
+ {
+ CALL_DRIVER (hdbc, retcode, hproc, en_AllocHandle,
+ (SQL_HANDLE_DBC, penv->dhenv, &(pdbc->dhdbc)))
+ }
+ else
+#endif
- if( pdbc->autocommit != SQL_AUTOCOMMIT_DEFAULT )
- {
- CALL_DRIVER ( hdbc, ret, hproc,
- en_SetConnectOption, (
- pdbc->dhdbc,
- SQL_AUTOCOMMIT,
- pdbc->autocommit ) )
+ {
+ hproc = _iodbcdm_getproc (hdbc, en_AllocConnect);
- retcode |= ret;
- }
+ if (hproc == SQL_NULL_HPROC)
+ {
+ sqlstat = en_IM005;
+ }
+ else
+ {
+ CALL_DRIVER (hdbc, retcode, hproc,
+ en_AllocConnect, (penv->dhenv, &(pdbc->dhdbc)))
+ }
+ }
- if( pdbc->current_qualifier != NULL )
- {
- CALL_DRIVER ( hdbc, ret, hproc,
- en_SetConnectOption, (
- pdbc->dhdbc,
- SQL_CURRENT_QUALIFIER,
- pdbc->current_qualifier ) )
+ if (retcode == SQL_ERROR)
+ {
+ sqlstat = en_IM005;
+ }
- retcode |= ret;
- }
+ if (sqlstat != en_00000)
+ {
+ _iodbcdm_driverunload (hdbc);
- if( pdbc->packet_size != 0UL )
- {
- CALL_DRIVER ( hdbc, ret, hproc,
- en_SetConnectOption, (
- pdbc->dhdbc,
- SQL_PACKET_SIZE,
- pdbc->packet_size ) )
+ pdbc->dhdbc = SQL_NULL_HDBC;
+ PUSHSQLERR (pdbc->herr, en_IM005);
- retcode |= ret;
+ return SQL_ERROR;
+ }
}
- if( pdbc->quiet_mode != (UDWORD)NULL )
- {
- CALL_DRIVER ( hdbc, ret, hproc,
- en_SetConnectOption, (
- pdbc->dhdbc,
- SQL_QUIET_MODE,
- pdbc->quiet_mode ) )
+ pdbc->henv = penv;
+ penv->refcount++; /* bookkeeping reference count on this driver */
+ }
- retcode |= ret;
- }
+ /* driver's login timeout option must been set before
+ * its SQLConnect() call */
+ if (pdbc->login_timeout != 0UL)
+ {
+ hproc = _iodbcdm_getproc (hdbc, en_SetConnectOption);
- if( pdbc->txn_isolation != SQL_TXN_READ_UNCOMMITTED )
+ if (hproc == SQL_NULL_HPROC)
{
- CALL_DRIVER ( hdbc, ret, hproc,
- en_SetConnectOption, (
- pdbc->dhdbc,
- SQL_TXN_ISOLATION,
- pdbc->txn_isolation ) )
+ sqlstat = en_IM004;
}
-
- /* check error code for driver's SQLSetConnectOption() call */
- if( retcode != SQL_SUCCESS
- && retcode != SQL_SUCCESS_WITH_INFO )
+ else
{
- PUSHSQLERR ( pdbc->herr, en_IM006 );
+ CALL_DRIVER (hdbc, retcode, hproc,
+ en_SetConnectOption, (
+ pdbc->dhdbc,
+ SQL_LOGIN_TIMEOUT,
+ pdbc->login_timeout))
- retcode = SQL_ERROR;
- }
-
- /* get cursor behavior on transaction commit or rollback */
- hproc = _iodbcdm_getproc( hdbc, en_GetInfo );
-
- if( hproc == SQL_NULL_HPROC )
- {
- PUSHSQLERR ( pdbc->herr, en_01000 );
+ if (retcode == SQL_ERROR)
+ {
+ PUSHSQLERR (pdbc->herr, en_IM006);
- return retcode;
+ return SQL_SUCCESS_WITH_INFO;
+ }
}
+ }
- CALL_DRIVER ( hdbc, ret, hproc,
- en_GetInfo, (
- pdbc->dhdbc,
- SQL_CURSOR_COMMIT_BEHAVIOR,
- (PTR)&(pdbc->cb_commit),
- sizeof(pdbc->cb_commit),
- NULL ) )
-
- retcode |= ret;
-
- CALL_DRIVER ( hdbc, ret, hproc,
- en_GetInfo, (
- pdbc->dhdbc,
- SQL_CURSOR_ROLLBACK_BEHAVIOR,
- (PTR)&(pdbc->cb_rollback),
- sizeof(pdbc->cb_rollback),
- NULL ) )
-
- retcode |= ret;
-
- if( retcode != SQL_SUCCESS
- && retcode != SQL_SUCCESS_WITH_INFO )
- {
- return SQL_ERROR;
- }
-
- return retcode;
+ return SQL_SUCCESS;
}
-static RETCODE _iodbcdm_settracing( HDBC hdbc, char* dsn, int dsnlen )
-{
- char buf[256];
- char* ptr;
- RETCODE setopterr = SQL_SUCCESS;
-
- /* Get Driver's DLL path from specificed or default dsn section */
- ptr = _iodbcdm_getkeyvalbydsn( dsn, dsnlen, "TraceFile",
- (char FAR*)buf, sizeof(buf));
-
- if( ptr == NULL || ptr[0] == '\0' )
- {
- ptr = (char FAR*)(SQL_OPT_TRACE_FILE_DEFAULT);
- }
-
- setopterr |= SQLSetConnectOption( hdbc,
- SQL_OPT_TRACEFILE, (UDWORD)(ptr));
-
- ptr = _iodbcdm_getkeyvalbydsn( dsn, dsnlen, "Trace",
- (char FAR*)buf, sizeof(buf));
-
- if( ptr != NULL )
- {
- UDWORD opt = (UDWORD)(-1L);
-
- if( STREQ(ptr, "ON")
- || STREQ(ptr, "On")
- || STREQ(ptr, "on")
- || STREQ(ptr, "1" ) )
- {
- opt = SQL_OPT_TRACE_ON;
- }
-
- if( STREQ(ptr, "OFF")
- || STREQ(ptr, "Off")
- || STREQ(ptr, "off")
- || STREQ(ptr, "0" ) )
- {
- opt = SQL_OPT_TRACE_OFF;
- }
-
- if( opt != (UDWORD)(-1L) )
- {
- setopterr |= SQLSetConnectOption( hdbc,
- SQL_OPT_TRACE, opt);
- }
- }
- return setopterr;
-}
-
-RETCODE SQL_API SQLConnect (
- HDBC hdbc,
- UCHAR FAR* szDSN,
- SWORD cbDSN,
- UCHAR FAR* szUID,
- SWORD cbUID,
- UCHAR FAR* szAuthStr,
- SWORD cbAuthStr)
+/* - Call driver's SQLFreeConnect()
+ * - Call driver's SQLFreeEnv() ( for the last reference only)
+ * - Unload the share library( or decrease its reference
+ * count if it is not the last referenct )
+ * - decrease bookkeeping reference count
+ * - state transition to allocated
+ */
+RETCODE
+_iodbcdm_driverunload (HDBC hdbc)
{
- DBC_t FAR* pdbc = (DBC_t FAR*)hdbc;
- RETCODE retcode = SQL_SUCCESS;
- RETCODE setopterr = SQL_SUCCESS;
- char driver[1024] = { '\0' }; /* MS SDK Guide
- * specifies driver
- * path can't longer
- * than 255. */
- char *ptr;
- HPROC hproc;
-
- if( hdbc == SQL_NULL_HDBC )
- {
- return SQL_INVALID_HANDLE;
- }
-
- /* check arguments */
- if( ( cbDSN < 0 && cbDSN != SQL_NTS )
- || ( cbUID < 0 && cbUID != SQL_NTS )
- || ( cbAuthStr < 0 && cbAuthStr != SQL_NTS )
- || ( cbDSN > SQL_MAX_DSN_LENGTH ) )
- {
- PUSHSQLERR ( pdbc->herr, en_S1090 );
+ DBC_t FAR *pdbc = (DBC_t FAR *) hdbc;
+ ENV_t FAR *penv;
+ ENV_t FAR *tpenv;
+ GENV_t FAR *genv;
+ HPROC hproc;
+ RETCODE retcode = SQL_SUCCESS;
+
+ if (hdbc == SQL_NULL_HDBC)
+ {
+ return SQL_INVALID_HANDLE;
+ }
+
+ /* no pointer check will be performed in this function */
+ penv = (ENV_t FAR *) pdbc->henv;
+ genv = (GENV_t FAR *) pdbc->genv;
+
+ if (penv == NULL || penv->hdll == SQL_NULL_HDLL)
+ {
+ return SQL_SUCCESS;
+ }
- return SQL_ERROR;
- }
+#if (ODBCVER >= 0x0300)
+ hproc = _iodbcdm_getproc (hdbc, en_FreeHandle);
+
+ if (hproc)
+ {
+ CALL_DRIVER (hdbc, retcode, hproc, en_FreeHandle,
+ (SQL_HANDLE_DBC, pdbc->dhdbc))
+ }
+ else
+#endif
- if( szDSN == NULL || cbDSN == 0 )
- {
- PUSHSQLERR ( pdbc->herr, en_IM002 );
-
- return SQL_ERROR;
- }
+ {
+ hproc = _iodbcdm_getproc (hdbc, en_FreeConnect);
- /* check state */
- if( pdbc->state != en_dbc_allocated )
+ if (hproc != SQL_NULL_HPROC)
{
- PUSHSQLERR ( pdbc->herr, en_08002 );
+ CALL_DRIVER (hdbc, retcode, hproc,
+ en_FreeConnect, (pdbc->dhdbc))
- return SQL_ERROR;
+ pdbc->dhdbc = SQL_NULL_HDBC;
}
+ }
- setopterr |= _iodbcdm_settracing( hdbc,
- (char*)szDSN, cbDSN );
-
- ptr = _iodbcdm_getkeyvalbydsn( szDSN, cbDSN, "Driver",
- (char FAR*)driver, sizeof(driver));
+ penv->refcount--;
- if( ptr == NULL )
- /* No specified or default dsn section or
- * no driver specification in this dsn section */
- {
- PUSHSQLERR ( pdbc->herr, en_IM002 );
-
- return SQL_ERROR;
- }
+ if (!penv->refcount)
+ /* no other connections still attaching with this driver */
+ {
- retcode = _iodbcdm_driverload( driver, hdbc );
+#if (ODBCVER >= 0x0300)
+ hproc = _iodbcdm_getproc (hdbc, en_FreeHandle);
- switch( retcode )
+ if (hproc)
{
- case SQL_SUCCESS:
- break;
-
- case SQL_SUCCESS_WITH_INFO:
- setopterr = SQL_ERROR;
- /* unsuccessed in calling driver's
- * SQLSetConnectOption() to set login
- * timeout.
- */
- break;
-
- default:
- return retcode;
+ CALL_DRIVER (hdbc, retcode, hproc, en_FreeHandle,
+ (SQL_HANDLE_ENV, penv->dhenv))
}
+ else
+#endif
- hproc = _iodbcdm_getproc( hdbc, en_Connect );
-
- if( hproc == SQL_NULL_HPROC )
{
- _iodbcdm_driverunload( hdbc );
+ hproc = _iodbcdm_getproc (hdbc, en_FreeEnv);
- PUSHSQLERR ( pdbc->herr, en_IM001 );
+ if (hproc != SQL_NULL_HPROC)
+ {
+ CALL_DRIVER (hdbc, retcode, hproc, en_FreeEnv,
+ (penv->dhenv))
- return SQL_ERROR;
+ penv->dhenv = SQL_NULL_HENV;
+ }
}
- CALL_DRIVER ( hdbc, retcode, hproc, en_Connect, (
- pdbc->dhdbc,
- szDSN, cbDSN,
- szUID, cbUID,
- szAuthStr, cbAuthStr ) )
-
-#if 0
- retcode = hproc(pdbc->dhdbc,
- szDSN, cbDSN,
- szUID, cbUID,
- szAuthStr, cbAuthStr );
-#endif
+ _iodbcdm_dllclose (penv->hdll);
+
+ penv->hdll = SQL_NULL_HDLL;
- if( retcode != SQL_SUCCESS
- && retcode != SQL_SUCCESS_WITH_INFO )
+ for (tpenv = (ENV_t FAR *) genv->henv;
+ tpenv != NULL;
+ tpenv = (ENV_t FAR *) penv->next)
{
- /* not unload driver for retrive error
- * messge from driver */
- /*********
- _iodbcdm_driverunload( hdbc );
- **********/
+ if (tpenv == penv)
+ {
+ genv->henv = penv->next;
+ break;
+ }
- return retcode;
+ if (tpenv->next == penv)
+ {
+ tpenv->next = penv->next;
+ break;
+ }
}
- /* state transition */
- pdbc->state = en_dbc_connected;
+ MEM_FREE (penv);
+ }
- /* do delaid option setting */
- setopterr |= _iodbcdm_dbcdelayset( hdbc );
+ pdbc->henv = SQL_NULL_HENV;
+ pdbc->hstmt = SQL_NULL_HSTMT;
+ /* pdbc->herr = SQL_NULL_HERR;
+ -- delay to DM's SQLFreeConnect() */
+ pdbc->dhdbc = SQL_NULL_HDBC;
+ pdbc->state = en_dbc_allocated;
- if( setopterr != SQL_SUCCESS )
- {
- return SQL_SUCCESS_WITH_INFO;
- }
-
- return retcode;
+ /* set connect options to default values */
+ /**********
+ pdbc->access_mode = SQL_MODE_DEFAULT;
+ pdbc->autocommit = SQL_AUTOCOMMIT_DEFAULT;
+ pdbc->login_timeout = 0UL;
+ **********/
+ pdbc->odbc_cursors = SQL_CUR_DEFAULT;
+ pdbc->packet_size = 0UL;
+ pdbc->quiet_mode = (UDWORD) NULL;
+ pdbc->txn_isolation = SQL_TXN_READ_UNCOMMITTED;
+
+ if (pdbc->current_qualifier != NULL)
+ {
+ MEM_FREE (pdbc->current_qualifier);
+ pdbc->current_qualifier = NULL;
+ }
+
+ return SQL_SUCCESS;
}
-
-RETCODE SQL_API SQLDriverConnect (
- HDBC hdbc,
- HWND hwnd,
- UCHAR FAR* szConnStrIn,
- SWORD cbConnStrIn,
- UCHAR FAR* szConnStrOut,
- SWORD cbConnStrOutMax,
- SWORD FAR* pcbConnStrOut,
- UWORD fDriverCompletion )
-{
- DBC_t FAR* pdbc = (DBC_t FAR*)hdbc;
- HDLL hdll;
- char FAR* drv;
- char drvbuf[1024];
- char FAR* dsn;
- char dsnbuf[SQL_MAX_DSN_LENGTH + 1];
- UCHAR cnstr2drv[1024];
- HPROC hproc, dialproc;
- int sqlstat = en_00000;
- RETCODE retcode = SQL_SUCCESS;
- RETCODE setopterr = SQL_SUCCESS;
+static RETCODE
+_iodbcdm_dbcdelayset (HDBC hdbc)
+{
+ DBC_t FAR *pdbc = (DBC_t FAR *) hdbc;
+ ENV_t FAR *penv;
+ HPROC hproc;
+ RETCODE retcode = SQL_SUCCESS;
+ RETCODE ret;
+
+ penv = pdbc->henv;
+
+ hproc = _iodbcdm_getproc (hdbc, en_SetConnectOption);
+
+ if (hproc == SQL_NULL_HPROC)
+ {
+ PUSHSQLERR (pdbc->herr, en_IM006);
+
+ return SQL_SUCCESS_WITH_INFO;
+ }
+
+ if (pdbc->access_mode != SQL_MODE_DEFAULT)
+ {
+ CALL_DRIVER (hdbc, ret, hproc,
+ en_SetConnectOption, (
+ SQL_ACCESS_MODE,
+ pdbc->access_mode))
+
+ retcode |= ret;
+ }
+
+ if (pdbc->autocommit != SQL_AUTOCOMMIT_DEFAULT)
+ {
+ CALL_DRIVER (hdbc, ret, hproc,
+ en_SetConnectOption, (
+ pdbc->dhdbc,
+ SQL_AUTOCOMMIT,
+ pdbc->autocommit))
+
+ retcode |= ret;
+ }
+
+ if (pdbc->current_qualifier != NULL)
+ {
+ CALL_DRIVER (hdbc, ret, hproc,
+ en_SetConnectOption, (
+ pdbc->dhdbc,
+ SQL_CURRENT_QUALIFIER,
+ pdbc->current_qualifier))
+
+ retcode |= ret;
+ }
+
+ if (pdbc->packet_size != 0UL)
+ {
+ CALL_DRIVER (hdbc, ret, hproc,
+ en_SetConnectOption, (
+ pdbc->dhdbc,
+ SQL_PACKET_SIZE,
+ pdbc->packet_size))
+
+ retcode |= ret;
+ }
+
+ if (pdbc->quiet_mode != (UDWORD) NULL)
+ {
+ CALL_DRIVER (hdbc, ret, hproc,
+ en_SetConnectOption, (
+ pdbc->dhdbc,
+ SQL_QUIET_MODE,
+ pdbc->quiet_mode))
+
+ retcode |= ret;
+ }
+
+ if (pdbc->txn_isolation != SQL_TXN_READ_UNCOMMITTED)
+ {
+ CALL_DRIVER (hdbc, ret, hproc,
+ en_SetConnectOption, (
+ pdbc->dhdbc,
+ SQL_TXN_ISOLATION,
+ pdbc->txn_isolation))
+ }
+
+ /* check error code for driver's SQLSetConnectOption() call */
+ if (retcode != SQL_SUCCESS && retcode != SQL_SUCCESS_WITH_INFO)
+ {
+ PUSHSQLERR (pdbc->herr, en_IM006);
+
+ retcode = SQL_ERROR;
+ }
+
+ /* get cursor behavior on transaction commit or rollback */
+ hproc = _iodbcdm_getproc (hdbc, en_GetInfo);
+
+ if (hproc == SQL_NULL_HPROC)
+ {
+ PUSHSQLERR (pdbc->herr, en_01000);
+
+ return retcode;
+ }
+
+ CALL_DRIVER (hdbc, ret, hproc,
+ en_GetInfo, (
+ pdbc->dhdbc,
+ SQL_CURSOR_COMMIT_BEHAVIOR,
+ (PTR) & (pdbc->cb_commit),
+ sizeof (pdbc->cb_commit),
+ NULL))
+
+ retcode |= ret;
+
+ CALL_DRIVER (hdbc, ret, hproc,
+ en_GetInfo, (
+ pdbc->dhdbc,
+ SQL_CURSOR_ROLLBACK_BEHAVIOR,
+ (PTR) & (pdbc->cb_rollback),
+ sizeof (pdbc->cb_rollback),
+ NULL))
+
+ retcode |= ret;
+
+ if (retcode != SQL_SUCCESS
+ && retcode != SQL_SUCCESS_WITH_INFO)
+ {
+ return SQL_ERROR;
+ }
+
+ return retcode;
+}
- if( hdbc == SQL_NULL_HDBC )
- {
- return SQL_INVALID_HANDLE;
- }
- /* check arguments */
- if( ( cbConnStrIn < 0 && cbConnStrIn != SQL_NTS )
- || cbConnStrOutMax < 0 )
- {
- PUSHSQLERR (pdbc->herr, en_S1090 );
+static RETCODE
+_iodbcdm_settracing (HDBC hdbc, char *dsn, int dsnlen)
+{
+ char buf[256];
+ char *ptr;
+ RETCODE setopterr = SQL_SUCCESS;
- return SQL_ERROR;
- }
+ /* Get Driver's DLL path from specificed or default dsn section */
+ ptr = _iodbcdm_getkeyvalbydsn (dsn, dsnlen, "TraceFile",
+ (char FAR *) buf, sizeof (buf));
- /* check state */
- if( pdbc->state != en_dbc_allocated )
- {
- PUSHSQLERR (pdbc->herr, en_08002 );
+ if (ptr == NULL || ptr[0] == '\0')
+ {
+ ptr = (char FAR *) (SQL_OPT_TRACE_FILE_DEFAULT);
+ }
- return SQL_ERROR;
- }
+ setopterr |= SQLSetConnectOption (hdbc, SQL_OPT_TRACEFILE, (UDWORD) (ptr));
- drv = _iodbcdm_getkeyvalinstr(szConnStrIn, cbConnStrIn,
- "DRIVER", drvbuf, sizeof(drvbuf));
+ ptr = _iodbcdm_getkeyvalbydsn (dsn, dsnlen, "Trace",
+ (char FAR *) buf, sizeof (buf));
- dsn = _iodbcdm_getkeyvalinstr(szConnStrIn, cbConnStrIn,
- "DSN", dsnbuf, sizeof(dsnbuf));
+ if (ptr != NULL)
+ {
+ UDWORD opt = (UDWORD) (-1L);
- switch( fDriverCompletion )
+ if (STREQ (ptr, "ON")
+ || STREQ (ptr, "On")
+ || STREQ (ptr, "on")
+ || STREQ (ptr, "1"))
{
- case SQL_DRIVER_NOPROMPT:
- break;
-
- case SQL_DRIVER_COMPLETE:
- case SQL_DRIVER_COMPLETE_REQUIRED:
- if( dsn != NULL )
- {
- break;
- }
- /* fall to next case */
- case SQL_DRIVER_PROMPT:
- /* Get data source dialog box function from
- * current executable */
- hdll = _iodbcdm_dllopen((char FAR*)NULL);
- dialproc = _iodbcdm_dllproc( hdll,
- "_iodbcdm_drvconn_dialbox");
-
- if( dialproc == SQL_NULL_HPROC )
- {
- sqlstat = en_IM008;
- break;
- }
-
- retcode = dialproc(
- hwnd, /* window or display handle */
- dsnbuf, /* input/output dsn buf */
- sizeof(dsnbuf), /* buf size */
- &sqlstat); /* error code */
-
- if( retcode != SQL_SUCCESS )
- {
- break;
- }
-
- if( cbConnStrIn == SQL_NTS )
- {
- cbConnStrIn = STRLEN(szConnStrIn );
- }
-
- dsn = dsnbuf;
-
- if( dsn[0] == '\0' )
- {
- dsn = "default";
- }
-
- if( cbConnStrIn > sizeof(cnstr2drv)
- - STRLEN(dsn) - STRLEN("DSN=;") -1 )
- {
- sqlstat = en_S1001; /* a lazy way to avoid
- * using heap memory */
- break;
- }
-
- sprintf( (char FAR *)cnstr2drv, "DSN=%s;", dsn);
- cbConnStrIn += STRLEN(cnstr2drv);
- STRNCAT( cnstr2drv, szConnStrIn, cbConnStrIn );
- szConnStrIn = cnstr2drv;
- break;
-
- default:
- sqlstat = en_S1110;
- break;
+ opt = SQL_OPT_TRACE_ON;
}
- if( sqlstat != en_00000 )
+ if (STREQ (ptr, "OFF")
+ || STREQ (ptr, "Off")
+ || STREQ (ptr, "off")
+ || STREQ (ptr, "0"))
{
- PUSHSQLERR( pdbc->herr, sqlstat );
-
- return SQL_ERROR;
+ opt = SQL_OPT_TRACE_OFF;
}
- if( dsn == NULL || dsn[0] == '\0' )
- {
- dsn = "default";
- }
- else /* if you want tracing, you must use a DSN */
+ if (opt != (UDWORD) (-1L))
{
- setopterr |= _iodbcdm_settracing( hdbc,
- (char*)dsn, SQL_NTS );
+ setopterr |= SQLSetConnectOption (hdbc,
+ SQL_OPT_TRACE, opt);
}
+ }
- if( drv == NULL || drv[0] == '\0' )
- {
- drv = _iodbcdm_getkeyvalbydsn( dsn, SQL_NTS, "Driver",
- drvbuf, sizeof(drvbuf));
- }
+ return setopterr;
+}
- if( drv == NULL )
- {
- PUSHSQLERR( pdbc->herr, en_IM002 );
- return SQL_ERROR;
- }
+RETCODE SQL_API
+SQLConnect (
+ HDBC hdbc,
+ UCHAR FAR * szDSN,
+ SWORD cbDSN,
+ UCHAR FAR * szUID,
+ SWORD cbUID,
+ UCHAR FAR * szAuthStr,
+ SWORD cbAuthStr)
+{
+ DBC_t FAR *pdbc = (DBC_t FAR *) hdbc;
+ RETCODE retcode = SQL_SUCCESS;
+ RETCODE setopterr = SQL_SUCCESS;
+ char driver[1024] = {'\0'}; /* MS SDK Guide
+ * specifies driver
+ * path can't longer
+ * than 255. */
+ char *ptr;
+ HPROC hproc;
+
+ if (hdbc == SQL_NULL_HDBC)
+ {
+ return SQL_INVALID_HANDLE;
+ }
+
+ /* check arguments */
+ if ((cbDSN < 0 && cbDSN != SQL_NTS)
+ || (cbUID < 0 && cbUID != SQL_NTS)
+ || (cbAuthStr < 0 && cbAuthStr != SQL_NTS)
+ || (cbDSN > SQL_MAX_DSN_LENGTH))
+ {
+ PUSHSQLERR (pdbc->herr, en_S1090);
+
+ return SQL_ERROR;
+ }
+
+ if (szDSN == NULL || cbDSN == 0)
+ {
+ PUSHSQLERR (pdbc->herr, en_IM002);
+
+ return SQL_ERROR;
+ }
+
+ /* check state */
+ if (pdbc->state != en_dbc_allocated)
+ {
+ PUSHSQLERR (pdbc->herr, en_08002);
+
+ return SQL_ERROR;
+ }
+
+ setopterr |= _iodbcdm_settracing (hdbc,
+ (char *) szDSN, cbDSN);
+
+ ptr = _iodbcdm_getkeyvalbydsn (szDSN, cbDSN, "Driver",
+ (char FAR *) driver, sizeof (driver));
+
+ if (ptr == NULL)
+ /* No specified or default dsn section or
+ * no driver specification in this dsn section */
+ {
+ PUSHSQLERR (pdbc->herr, en_IM002);
+
+ return SQL_ERROR;
+ }
+
+ retcode = _iodbcdm_driverload (driver, hdbc);
+
+ switch (retcode)
+ {
+ case SQL_SUCCESS:
+ break;
+
+ case SQL_SUCCESS_WITH_INFO:
+ setopterr = SQL_ERROR;
+ /* unsuccessed in calling driver's
+ * SQLSetConnectOption() to set login
+ * timeout.
+ */
+ break;
+
+ default:
+ return retcode;
+ }
+
+ hproc = _iodbcdm_getproc (hdbc, en_Connect);
+
+ if (hproc == SQL_NULL_HPROC)
+ {
+ _iodbcdm_driverunload (hdbc);
+
+ PUSHSQLERR (pdbc->herr, en_IM001);
+
+ return SQL_ERROR;
+ }
+
+ CALL_DRIVER (hdbc, retcode, hproc, en_Connect, (
+ pdbc->dhdbc,
+ szDSN, cbDSN,
+ szUID, cbUID,
+ szAuthStr, cbAuthStr))
+
+ if (retcode != SQL_SUCCESS
+ && retcode != SQL_SUCCESS_WITH_INFO)
+ {
+ /* not unload driver for retrive error
+ * messge from driver */
+ /*********
+ _iodbcdm_driverunload( hdbc );
+ **********/
- retcode = _iodbcdm_driverload( drv, hdbc );
+ return retcode;
+ }
- switch( retcode )
- {
- case SQL_SUCCESS:
- break;
-
- case SQL_SUCCESS_WITH_INFO:
- setopterr = SQL_ERROR;
- /* unsuccessed in calling driver's
- * SQLSetConnectOption() to set login
- * timeout.
- */
- break;
-
- default:
- return retcode;
- }
+ /* state transition */
+ pdbc->state = en_dbc_connected;
- hproc = _iodbcdm_getproc( hdbc, en_DriverConnect );
+ /* do delaid option setting */
+ setopterr |= _iodbcdm_dbcdelayset (hdbc);
- if( hproc == SQL_NULL_HPROC )
- {
- _iodbcdm_driverunload( hdbc );
+ if (setopterr != SQL_SUCCESS)
+ {
+ return SQL_SUCCESS_WITH_INFO;
+ }
- PUSHSQLERR ( pdbc->herr, en_IM001 );
+ return retcode;
+}
- return SQL_ERROR;
- }
-
- CALL_DRIVER ( hdbc, retcode, hproc, en_DriverConnect, (
- pdbc->dhdbc, hwnd,
- szConnStrIn, cbConnStrIn,
- szConnStrOut, cbConnStrOutMax,
- pcbConnStrOut, fDriverCompletion ) )
-
-#if 0
- retcode = hproc(pdbc->dhdbc, hwnd,
- szConnStrIn, cbConnStrIn,
- szConnStrOut, cbConnStrOutMax,
- pcbConnStrOut, fDriverCompletion );
-#endif
- if( retcode != SQL_SUCCESS
- && retcode != SQL_SUCCESS_WITH_INFO )
- {
- /* don't unload driver here for retrive
- * error message from driver */
+RETCODE SQL_API
+SQLDriverConnect (
+ HDBC hdbc,
+ SQLHWND hwnd,
+ UCHAR FAR * szConnStrIn,
+ SWORD cbConnStrIn,
+ UCHAR FAR * szConnStrOut,
+ SWORD cbConnStrOutMax,
+ SWORD FAR * pcbConnStrOut,
+ UWORD fDriverCompletion)
+{
+ DBC_t FAR *pdbc = (DBC_t FAR *) hdbc;
+ HDLL hdll;
+ char FAR *drv;
+ char drvbuf[1024];
+ char FAR *dsn;
+ char dsnbuf[SQL_MAX_DSN_LENGTH + 1];
+ UCHAR cnstr2drv[1024];
+
+ HPROC hproc;
+ HPROC dialproc;
+
+ int sqlstat = en_00000;
+ RETCODE retcode = SQL_SUCCESS;
+ RETCODE setopterr = SQL_SUCCESS;
+
+ if (hdbc == SQL_NULL_HDBC)
+ {
+ return SQL_INVALID_HANDLE;
+ }
+
+ /* check arguments */
+ if ((cbConnStrIn < 0 && cbConnStrIn != SQL_NTS)
+ || cbConnStrOutMax < 0)
+ {
+ PUSHSQLERR (pdbc->herr, en_S1090);
+
+ return SQL_ERROR;
+ }
+
+ /* check state */
+ if (pdbc->state != en_dbc_allocated)
+ {
+ PUSHSQLERR (pdbc->herr, en_08002);
+
+ return SQL_ERROR;
+ }
+
+ drv = _iodbcdm_getkeyvalinstr (szConnStrIn, cbConnStrIn,
+ "DRIVER", drvbuf, sizeof (drvbuf));
+
+ dsn = _iodbcdm_getkeyvalinstr (szConnStrIn, cbConnStrIn,
+ "DSN", dsnbuf, sizeof (dsnbuf));
+
+ switch (fDriverCompletion)
+ {
+ case SQL_DRIVER_NOPROMPT:
+ break;
+
+ case SQL_DRIVER_COMPLETE:
+ case SQL_DRIVER_COMPLETE_REQUIRED:
+ if (dsn != NULL || drv != NULL)
+ {
+ break;
+ }
+ /* fall to next case */
+ case SQL_DRIVER_PROMPT:
+ /* Get data source dialog box function from
+ * current executable */
+ hdll = _iodbcdm_dllopen ((char FAR *) NULL);
+ dialproc = _iodbcdm_dllproc (hdll,
+ "_iodbcdm_drvconn_dialbox");
+
+ if (dialproc == SQL_NULL_HPROC)
+ {
+ sqlstat = en_IM008;
+ break;
+ }
+
+ retcode = dialproc (
+ hwnd, /* window or display handle */
+ dsnbuf, /* input/output dsn buf */
+ sizeof (dsnbuf), /* buf size */
+ &sqlstat); /* error code */
+
+ if (retcode != SQL_SUCCESS)
+ {
+ break;
+ }
+
+ if (cbConnStrIn == SQL_NTS)
+ {
+ cbConnStrIn = STRLEN (szConnStrIn);
+ }
+
+ dsn = dsnbuf;
+
+ if (dsn[0] == '\0')
+ {
+ dsn = "default";
+ }
+
+ if (cbConnStrIn > sizeof (cnstr2drv)
+ - STRLEN (dsn) - STRLEN ("DSN=;") - 1)
+ {
+ sqlstat = en_S1001; /* a lazy way to avoid
+ * using heap memory */
+ break;
+ }
+
+ sprintf ((char*)cnstr2drv, "DSN=%s;", dsn);
+ cbConnStrIn += STRLEN (cnstr2drv);
+ STRNCAT (cnstr2drv, szConnStrIn, cbConnStrIn);
+ szConnStrIn = cnstr2drv;
+ break;
+
+ default:
+ sqlstat = en_S1110;
+ break;
+ }
+
+ if (sqlstat != en_00000)
+ {
+ PUSHSQLERR (pdbc->herr, sqlstat);
+
+ return SQL_ERROR;
+ }
+
+ if (dsn == NULL || dsn[0] == '\0')
+ {
+ dsn = "default";
+ }
+ else
+ /* if you want tracing, you must use a DSN */
+ {
+ setopterr |= _iodbcdm_settracing (hdbc,
+ (char *) dsn, SQL_NTS);
+ }
+
+ if (drv == NULL || drv[0] == '\0')
+ {
+ drv = _iodbcdm_getkeyvalbydsn (dsn, SQL_NTS, "Driver",
+ drvbuf, sizeof (drvbuf));
+ }
+
+ if (drv == NULL)
+ {
+ PUSHSQLERR (pdbc->herr, en_IM002);
+
+ return SQL_ERROR;
+ }
+
+ retcode = _iodbcdm_driverload (drv, hdbc);
+
+ switch (retcode)
+ {
+ case SQL_SUCCESS:
+ break;
+
+ case SQL_SUCCESS_WITH_INFO:
+ setopterr = SQL_ERROR;
+ /* unsuccessed in calling driver's
+ * SQLSetConnectOption() to set login
+ * timeout.
+ */
+ break;
+
+ default:
+ return retcode;
+ }
+
+ hproc = _iodbcdm_getproc (hdbc, en_DriverConnect);
+
+ if (hproc == SQL_NULL_HPROC)
+ {
+ _iodbcdm_driverunload (hdbc);
+
+ PUSHSQLERR (pdbc->herr, en_IM001);
+
+ return SQL_ERROR;
+ }
+
+ CALL_DRIVER (hdbc, retcode, hproc, en_DriverConnect, (
+ pdbc->dhdbc, hwnd,
+ szConnStrIn, cbConnStrIn,
+ szConnStrOut, cbConnStrOutMax,
+ pcbConnStrOut, fDriverCompletion))
+
+ if (retcode != SQL_SUCCESS && retcode != SQL_SUCCESS_WITH_INFO)
+ {
+ /* don't unload driver here for retrive
+ * error message from driver */
/********
_iodbcdm_driverunload( hdbc );
*********/
- return retcode;
- }
+ return retcode;
+ }
- /* state transition */
- pdbc->state = en_dbc_connected;
+ /* state transition */
+ pdbc->state = en_dbc_connected;
- /* do delaid option setting */
- setopterr |= _iodbcdm_dbcdelayset( hdbc );
+ /* do delaid option setting */
+ setopterr |= _iodbcdm_dbcdelayset (hdbc);
- if( setopterr != SQL_SUCCESS )
- {
- return SQL_SUCCESS_WITH_INFO;
- }
+ if (setopterr != SQL_SUCCESS)
+ {
+ return SQL_SUCCESS_WITH_INFO;
+ }
- return retcode;
+ return retcode;
}
-RETCODE SQL_API SQLBrowseConnect (
- HDBC hdbc,
- HWND hwnd,
- UCHAR FAR* szConnStrIn,
- SWORD cbConnStrIn,
- UCHAR FAR* szConnStrOut,
- SWORD cbConnStrOutMax,
- SWORD FAR* pcbConnStrOut )
+
+RETCODE SQL_API
+SQLBrowseConnect (
+ HDBC hdbc,
+ UCHAR FAR * szConnStrIn,
+ SWORD cbConnStrIn,
+ UCHAR FAR * szConnStrOut,
+ SWORD cbConnStrOutMax,
+ SWORD FAR * pcbConnStrOut)
{
- DBC_t FAR* pdbc = (DBC_t FAR*)hdbc;
- HDLL hdll;
- char FAR* drv;
- char drvbuf[1024];
- char FAR* dsn;
- char dsnbuf[SQL_MAX_DSN_LENGTH + 1];
- UCHAR cnstr2drv[1024];
+ DBC_t FAR *pdbc = (DBC_t FAR *) hdbc;
+ char FAR *drv;
+ char drvbuf[1024];
+ char FAR *dsn;
+ char dsnbuf[SQL_MAX_DSN_LENGTH + 1];
- HPROC hproc, dialproc;
+ HPROC hproc;
- int sqlstat = en_00000;
- RETCODE retcode = SQL_SUCCESS;
- RETCODE setopterr = SQL_SUCCESS;
+ RETCODE retcode = SQL_SUCCESS;
+ RETCODE setopterr = SQL_SUCCESS;
- if( hdbc == SQL_NULL_HDBC )
- {
- return SQL_INVALID_HANDLE;
- }
+ if (hdbc == SQL_NULL_HDBC)
+ {
+ return SQL_INVALID_HANDLE;
+ }
- /* check arguments */
- if( ( cbConnStrIn < 0 && cbConnStrIn != SQL_NTS )
- || cbConnStrOutMax < 0 )
- {
- PUSHSQLERR (pdbc->herr, en_S1090 );
+ /* check arguments */
+ if ((cbConnStrIn < 0 && cbConnStrIn != SQL_NTS) || cbConnStrOutMax < 0)
+ {
+ PUSHSQLERR (pdbc->herr, en_S1090);
- return SQL_ERROR;
- }
+ return SQL_ERROR;
+ }
- if( pdbc->state == en_dbc_allocated )
- {
- drv = _iodbcdm_getkeyvalinstr(szConnStrIn, cbConnStrIn,
- "DRIVER", drvbuf, sizeof(drvbuf));
-
- dsn = _iodbcdm_getkeyvalinstr(szConnStrIn, cbConnStrIn,
- "DSN", dsnbuf, sizeof(dsnbuf));
-
- if( dsn == NULL || dsn[0] == '\0' )
- {
- dsn = "default";
- }
- else /* if you want tracing, you must use a DSN */
- {
- setopterr |= _iodbcdm_settracing( hdbc,
- (char*)dsn, SQL_NTS );
- }
-
- if( drv == NULL || drv[0] == '\0' )
- {
- drv = _iodbcdm_getkeyvalbydsn( dsn, SQL_NTS, "Driver",
- drvbuf, sizeof(drvbuf));
- }
-
- if( drv == NULL )
- {
- PUSHSQLERR( pdbc->herr, en_IM002 );
-
- return SQL_ERROR;
- }
-
- retcode = _iodbcdm_driverload( drv, hdbc );
-
- switch( retcode )
- {
- case SQL_SUCCESS:
- break;
-
- case SQL_SUCCESS_WITH_INFO:
- setopterr = SQL_ERROR;
- /* unsuccessed in calling driver's
- * SQLSetConnectOption() to set login
- * timeout.
- */
- break;
-
- default:
- return retcode;
- }
- }
- else if( pdbc->state != en_dbc_needdata )
- {
- PUSHSQLERR ( pdbc->herr, en_08002 );
-
- return SQL_ERROR;
- }
+ if (pdbc->state == en_dbc_allocated)
+ {
+ drv = _iodbcdm_getkeyvalinstr (szConnStrIn, cbConnStrIn,
+ "DRIVER", drvbuf, sizeof (drvbuf));
- hproc = _iodbcdm_getproc( hdbc, en_BrowseConnect);
+ dsn = _iodbcdm_getkeyvalinstr (szConnStrIn, cbConnStrIn,
+ "DSN", dsnbuf, sizeof (dsnbuf));
- if( hproc == SQL_NULL_HPROC )
+ if (dsn == NULL || dsn[0] == '\0')
{
- _iodbcdm_driverunload( hdbc );
-
- pdbc->state = en_dbc_allocated;
-
- PUSHSQLERR( pdbc->herr, en_IM001 );
-
- return SQL_ERROR;
+ dsn = "default";
}
-
- CALL_DRIVER ( hdbc, retcode, hproc, en_BrowseConnect, (
- pdbc->dhdbc, hwnd,
- szConnStrIn, cbConnStrIn,
- szConnStrOut, cbConnStrOutMax,
- pcbConnStrOut ) )
-
-#if 0
- retcode = hproc(pdbc->dhdbc, hwnd,
- szConnStrIn, cbConnStrIn,
- szConnStrOut, cbConnStrOutMax,
- pcbConnStrOut );
-#endif
-
- switch( retcode )
+ else
+ /* if you want tracing, you must use a DSN */
{
- case SQL_SUCCESS:
- case SQL_SUCCESS_WITH_INFO:
- pdbc->state = en_dbc_connected;
- setopterr |= _iodbcdm_dbcdelayset( hdbc );
- if( setopterr != SQL_SUCCESS )
- {
- retcode = SQL_SUCCESS_WITH_INFO;
- }
- break;
-
- case SQL_NEED_DATA:
- pdbc->state = en_dbc_needdata;
- break;
-
- case SQL_ERROR:
- pdbc->state = en_dbc_allocated;
- /* but the driver will not unloaded
- * to allow application retrive err
- * message from driver
- */
- break;
-
- default:
- break;
+ setopterr |= _iodbcdm_settracing (hdbc,
+ (char *) dsn, SQL_NTS);
}
- return retcode;
-}
-
-RETCODE SQL_API SQLDisconnect ( HDBC hdbc )
-{
- DBC_t FAR* pdbc = (DBC_t*)hdbc;
- STMT_t FAR* pstmt;
- RETCODE retcode;
- HPROC hproc;
-
- int sqlstat = en_00000;
-
- if( hdbc == SQL_NULL_HDBC )
+ if (drv == NULL || drv[0] == '\0')
{
- return SQL_INVALID_HANDLE;
+ drv = _iodbcdm_getkeyvalbydsn (dsn, SQL_NTS, "Driver",
+ drvbuf, sizeof (drvbuf));
}
- /* check hdbc state */
- if ( pdbc->state == en_dbc_allocated )
+ if (drv == NULL)
{
- sqlstat = en_08003;
- }
+ PUSHSQLERR (pdbc->herr, en_IM002);
- /* check stmt(s) state */
- for( pstmt = (STMT_t FAR*)pdbc->hstmt;
- pstmt != NULL && sqlstat == en_00000;
- pstmt = (STMT_t FAR*)pstmt->next )
- {
- if( pstmt->state >= en_stmt_needdata
- || pstmt->asyn_on != en_NullProc )
- /* In this case one need to call
- * SQLCancel() first */
- {
- sqlstat = en_S1010;
- }
+ return SQL_ERROR;
}
- if( sqlstat == en_00000 )
- {
- hproc = _iodbcdm_getproc( hdbc, en_Disconnect );
-
- if( hproc == SQL_NULL_HPROC )
- {
- sqlstat = en_IM001;
- }
- }
+ retcode = _iodbcdm_driverload (drv, hdbc);
- if( sqlstat != en_00000 )
- {
- PUSHSQLERR ( pdbc->herr, sqlstat );
+ switch (retcode)
+ {
+ case SQL_SUCCESS:
+ break;
- return SQL_ERROR;
- }
-
- CALL_DRIVER ( hdbc, retcode, hproc, en_Disconnect, (
- pdbc->dhdbc ) )
+ case SQL_SUCCESS_WITH_INFO:
+ setopterr = SQL_ERROR;
+ /* unsuccessed in calling driver's
+ * SQLSetConnectOption() to set login
+ * timeout.
+ */
+ break;
-#if 0
- retcode = hproc( pdbc->dhdbc );
-#endif
+ default:
+ return retcode;
+ }
+ }
+ else if (pdbc->state != en_dbc_needdata)
+ {
+ PUSHSQLERR (pdbc->herr, en_08002);
- if( retcode == SQL_SUCCESS
- || retcode == SQL_SUCCESS_WITH_INFO )
- {
- /* diff from MS specs. We disallow
- * driver SQLDisconnect() return
- * SQL_SUCCESS_WITH_INFO and post
- * error message.
- */
- retcode = SQL_SUCCESS;
- }
- else
- {
- return retcode;
- }
+ return SQL_ERROR;
+ }
- /* free all statement handle(s) on this connection */
- for(;pdbc->hstmt;)
- {
- _iodbcdm_dropstmt( pdbc->hstmt );
- }
+ hproc = _iodbcdm_getproc (hdbc, en_BrowseConnect);
-#if 0
- retcode = _iodbcdm_driverunload( hdbc );
-#endif
+ if (hproc == SQL_NULL_HPROC)
+ {
+ _iodbcdm_driverunload (hdbc);
- /* state transition */
- if( retcode == SQL_SUCCESS )
- {
- pdbc->state = en_dbc_allocated;
- }
+ pdbc->state = en_dbc_allocated;
- return retcode;
-}
+ PUSHSQLERR (pdbc->herr, en_IM001);
-RETCODE SQL_API SQLNativeSql(
- HDBC hdbc,
- UCHAR FAR* szSqlStrIn,
- SDWORD cbSqlStrIn,
- UCHAR FAR* szSqlStr,
- SDWORD cbSqlStrMax,
- SDWORD FAR* pcbSqlStr )
-{
- DBC_t FAR* pdbc = (DBC_t FAR*)hdbc;
- HPROC hproc;
- int sqlstat = en_00000;
- RETCODE retcode;
-
- if( hdbc == SQL_NULL_HDBC )
- {
- return SQL_INVALID_HANDLE;
- }
+ return SQL_ERROR;
+ }
- /* check argument */
- if( szSqlStrIn == NULL )
- {
- sqlstat = en_S1009;
- }
- else if( cbSqlStrIn < 0
- && cbSqlStrIn != SQL_NTS )
- {
- sqlstat = en_S1090;
- }
+ CALL_DRIVER (hdbc, retcode, hproc, en_BrowseConnect, (
+ pdbc->dhdbc,
+ szConnStrIn, cbConnStrIn,
+ szConnStrOut, cbConnStrOutMax,
+ pcbConnStrOut))
- if( sqlstat != en_00000 )
- {
- PUSHSQLERR ( pdbc->herr, sqlstat );
+ switch (retcode)
+ {
+ case SQL_SUCCESS:
+ case SQL_SUCCESS_WITH_INFO:
+ pdbc->state = en_dbc_connected;
+ setopterr |= _iodbcdm_dbcdelayset (hdbc);
+ if (setopterr != SQL_SUCCESS)
+ {
+ retcode = SQL_SUCCESS_WITH_INFO;
+ }
+ break;
- return SQL_ERROR;
- }
+ case SQL_NEED_DATA:
+ pdbc->state = en_dbc_needdata;
+ break;
- /* check state */
- if( pdbc->state <= en_dbc_needdata )
- {
- PUSHSQLERR ( pdbc->herr, en_08003 );
+ case SQL_ERROR:
+ pdbc->state = en_dbc_allocated;
+ /* but the driver will not unloaded
+ * to allow application retrive err
+ * message from driver
+ */
+ break;
- return SQL_ERROR;
- }
+ default:
+ break;
+ }
- /* call driver */
- hproc = _iodbcdm_getproc( hdbc, en_NativeSql );
+ return retcode;
+}
- if( hproc == SQL_NULL_HPROC )
- {
- PUSHSQLERR ( pdbc->herr, en_IM001 );
- return SQL_ERROR;
- }
+RETCODE SQL_API
+SQLDisconnect (HDBC hdbc)
+{
+ DBC_t FAR *pdbc = (DBC_t *) hdbc;
+ STMT_t FAR *pstmt;
+ RETCODE retcode;
+ HPROC hproc;
+
+ int sqlstat = en_00000;
+
+ if (hdbc == SQL_NULL_HDBC)
+ {
+ return SQL_INVALID_HANDLE;
+ }
+
+ /* check hdbc state */
+ if (pdbc->state == en_dbc_allocated)
+ {
+ sqlstat = en_08003;
+ }
+
+ /* check stmt(s) state */
+ for (pstmt = (STMT_t FAR *) pdbc->hstmt;
+ pstmt != NULL && sqlstat == en_00000;
+ pstmt = (STMT_t FAR *) pstmt->next)
+ {
+ if (pstmt->state >= en_stmt_needdata
+ || pstmt->asyn_on != en_NullProc)
+ /* In this case one need to call
+ * SQLCancel() first */
+ {
+ sqlstat = en_S1010;
+ }
+ }
+
+ if (sqlstat == en_00000)
+ {
+ hproc = _iodbcdm_getproc (hdbc, en_Disconnect);
+
+ if (hproc == SQL_NULL_HPROC)
+ {
+ sqlstat = en_IM001;
+ }
+ }
+
+ if (sqlstat != en_00000)
+ {
+ PUSHSQLERR (pdbc->herr, sqlstat);
+
+ return SQL_ERROR;
+ }
+
+ CALL_DRIVER (hdbc, retcode, hproc, en_Disconnect, (
+ pdbc->dhdbc))
+
+ if (retcode == SQL_SUCCESS || retcode == SQL_SUCCESS_WITH_INFO)
+ {
+ /* diff from MS specs. We disallow
+ * driver SQLDisconnect() return
+ * SQL_SUCCESS_WITH_INFO and post
+ * error message.
+ */
+ retcode = SQL_SUCCESS;
+ }
+ else
+ {
+ return retcode;
+ }
+
+ /* free all statement handle(s) on this connection */
+ for (; pdbc->hstmt;)
+ {
+ _iodbcdm_dropstmt (pdbc->hstmt);
+ }
+
+ /* state transition */
+ if (retcode == SQL_SUCCESS)
+ {
+ pdbc->state = en_dbc_allocated;
+ }
+
+ return retcode;
+}
- CALL_DRIVER ( hdbc, retcode, hproc, en_NativeSql, (
- pdbc->dhdbc,
- szSqlStrIn,
- cbSqlStrIn,
- szSqlStr,
- cbSqlStrMax,
- pcbSqlStr ) )
-
-#if 0
- retcode = hproc(pdbc->dhdbc,
- szSqlStrIn,
- cbSqlStrIn,
- szSqlStr,
- cbSqlStrMax,
- pcbSqlStr );
-#endif
- return retcode;
+RETCODE SQL_API
+SQLNativeSql (
+ HDBC hdbc,
+ UCHAR FAR * szSqlStrIn,
+ SDWORD cbSqlStrIn,
+ UCHAR FAR * szSqlStr,
+ SDWORD cbSqlStrMax,
+ SDWORD FAR * pcbSqlStr)
+{
+ DBC_t FAR *pdbc = (DBC_t FAR *) hdbc;
+ HPROC hproc;
+ int sqlstat = en_00000;
+ RETCODE retcode;
+
+ if (hdbc == SQL_NULL_HDBC)
+ {
+ return SQL_INVALID_HANDLE;
+ }
+
+ /* check argument */
+ if (szSqlStrIn == NULL)
+ {
+ sqlstat = en_S1009;
+ }
+ else if (cbSqlStrIn < 0 && cbSqlStrIn != SQL_NTS)
+ {
+ sqlstat = en_S1090;
+ }
+
+ if (sqlstat != en_00000)
+ {
+ PUSHSQLERR (pdbc->herr, sqlstat);
+
+ return SQL_ERROR;
+ }
+
+ /* check state */
+ if (pdbc->state <= en_dbc_needdata)
+ {
+ PUSHSQLERR (pdbc->herr, en_08003);
+
+ return SQL_ERROR;
+ }
+
+ /* call driver */
+ hproc = _iodbcdm_getproc (hdbc, en_NativeSql);
+
+ if (hproc == SQL_NULL_HPROC)
+ {
+ PUSHSQLERR (pdbc->herr, en_IM001);
+
+ return SQL_ERROR;
+ }
+
+ CALL_DRIVER (hdbc, retcode, hproc, en_NativeSql,
+ (pdbc->dhdbc, szSqlStrIn, cbSqlStrIn, szSqlStr, cbSqlStrMax, pcbSqlStr))
+
+ return retcode;
}
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