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/* Module: environ.c
*
* Description: This module contains routines related to
* the environment, such as storing connection handles,
* and returning errors.
*
* Classes: EnvironmentClass (Functions prefix: "EN_")
*
* API functions: SQLAllocEnv, SQLFreeEnv, SQLError
*
* Comments: See "notice.txt" for copyright and license information.
*
*/
#include "environ.h"
#include "connection.h"
#include "statement.h"
#include <stdlib.h>
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#ifdef HAVE_MALLOC_H
#include <malloc.h>
#elif HAVE_SYS_MALLOC_H
#include <sys/malloc.h>
#endif
#ifdef UNIXODBC
#include <sql.h>
#include <odbcinst.h>
#include "dlg_specific.h"
#else
#include "iodbc.h"
#include "isql.h"
#include "isqlext.h"
#endif
/* The one instance of the handles */
ConnectionClass *conns[MAX_CONNECTIONS];
RETCODE SQL_API SQLAllocEnv(HENV FAR *phenv)
{
static char *func = "SQLAllocEnv";
mylog("**** in SQLAllocEnv ** \n");
/*
* add this here from _init (NG)
*/
getGlobalDefaults(DBMS_NAME, ODBCINST_INI, FALSE);
*phenv = (HENV) EN_Constructor();
if ( ! *phenv) {
*phenv = SQL_NULL_HENV;
EN_log_error(func, "Error allocating environment", NULL);
return SQL_ERROR;
}
mylog("** exit SQLAllocEnv: phenv = %u **\n", *phenv);
return SQL_SUCCESS;
}
RETCODE SQL_API SQLFreeEnv(HENV henv)
{
static char *func = "SQLFreeEnv";
EnvironmentClass *env = (EnvironmentClass *) henv;
mylog("**** in SQLFreeEnv: env = %u ** \n", env);
if (env && EN_Destructor(env)) {
mylog(" ok\n");
return SQL_SUCCESS;
}
mylog(" error\n");
EN_log_error(func, "Error freeing environment", env);
return SQL_ERROR;
}
/*// Returns the next SQL error information. */
SQLRETURN SQLError(SQLHENV henv,
SQLHDBC hdbc, SQLHSTMT hstmt,
SQLCHAR *szSqlState, SQLINTEGER *pfNativeError,
SQLCHAR *szErrorMsg, SQLSMALLINT cbErrorMsgMax,
SQLSMALLINT *pcbErrorMsg)
{
char *msg;
int status;
mylog("**** SQLError: henv=%u, hdbc=%u, hstmt=%u\n", henv, hdbc, hstmt);
if (SQL_NULL_HSTMT != hstmt) {
/*// CC: return an error of a hstmt */
StatementClass *stmt = (StatementClass *) hstmt;
if (SC_get_error(stmt, &status, &msg)) {
mylog("SC_get_error: status = %d, msg = #%s#\n", status, msg);
if (NULL == msg) {
if (NULL != szSqlState)
strcpy((char*)szSqlState, "00000");
if (NULL != pcbErrorMsg)
*pcbErrorMsg = 0;
if ((NULL != szErrorMsg) && (cbErrorMsgMax > 0))
szErrorMsg[0] = '\0';
return SQL_NO_DATA_FOUND;
}
if (NULL != pcbErrorMsg)
*pcbErrorMsg = (SWORD)strlen((char*)msg);
if ((NULL != szErrorMsg) && (cbErrorMsgMax > 0))
strncpy_null((char*)szErrorMsg, msg, cbErrorMsgMax);
if (NULL != pfNativeError)
*pfNativeError = status;
if (NULL != szSqlState)
switch (status) {
case STMT_TRUNCATED:
strcpy((char*)szSqlState, "01004");
break;
case STMT_INFO_ONLY:
strcpy((char*)szSqlState, "01000");
break;
case STMT_BAD_ERROR:
strcpy((char*)szSqlState, "08S01");
break;
case STMT_CREATE_TABLE_ERROR:
strcpy((char*)szSqlState, "S0001");
break;
case STMT_STATUS_ERROR:
case STMT_SEQUENCE_ERROR:
strcpy((char*)szSqlState, "S1010");
break;
case STMT_NO_MEMORY_ERROR:
strcpy((char*)szSqlState, "S1001");
break;
case STMT_COLNUM_ERROR:
strcpy((char*)szSqlState, "S1002");
break;
case STMT_NO_STMTSTRING:
strcpy((char*)szSqlState, "S1001");
break;
case STMT_ERROR_TAKEN_FROM_BACKEND:
strcpy((char*)szSqlState, "S1000");
break;
case STMT_INTERNAL_ERROR:
strcpy((char*)szSqlState, "S1000");
break;
case STMT_ROW_OUT_OF_RANGE:
strcpy((char*)szSqlState, "S1107");
break;
case STMT_OPERATION_CANCELLED:
strcpy((char*)szSqlState, "S1008");
break;
case STMT_NOT_IMPLEMENTED_ERROR:
strcpy((char*)szSqlState, "S1C00");
break;
case STMT_OPTION_OUT_OF_RANGE_ERROR:
strcpy((char*)szSqlState, "S1092");
break;
case STMT_BAD_PARAMETER_NUMBER_ERROR:
strcpy((char*)szSqlState, "S1093");
break;
case STMT_INVALID_COLUMN_NUMBER_ERROR:
strcpy((char*)szSqlState, "S1002");
break;
case STMT_RESTRICTED_DATA_TYPE_ERROR:
strcpy((char*)szSqlState, "07006");
break;
case STMT_INVALID_CURSOR_STATE_ERROR:
strcpy((char*)szSqlState, "24000");
break;
case STMT_OPTION_VALUE_CHANGED:
strcpy((char*)szSqlState, "01S02");
break;
case STMT_INVALID_CURSOR_NAME:
strcpy((char*)szSqlState, "34000");
break;
case STMT_NO_CURSOR_NAME:
strcpy((char*)szSqlState, "S1015");
break;
case STMT_INVALID_ARGUMENT_NO:
strcpy((char*)szSqlState, "S1009");
break;
case STMT_INVALID_CURSOR_POSITION:
strcpy((char*)szSqlState, "S1109");
break;
case STMT_VALUE_OUT_OF_RANGE:
strcpy((char*)szSqlState, "22003");
break;
case STMT_OPERATION_INVALID:
strcpy((char*)szSqlState, "S1011");
break;
case STMT_EXEC_ERROR:
default:
strcpy((char*)szSqlState, "S1000");
break;
}
mylog(" szSqlState = '%s', szError='%s'\n", szSqlState, szErrorMsg);
} else {
if (NULL != szSqlState)
strcpy((char*)szSqlState, "00000");
if (NULL != pcbErrorMsg)
*pcbErrorMsg = 0;
if ((NULL != szErrorMsg) && (cbErrorMsgMax > 0))
szErrorMsg[0] = '\0';
mylog(" returning NO_DATA_FOUND\n");
return SQL_NO_DATA_FOUND;
}
return SQL_SUCCESS;
} else if (SQL_NULL_HDBC != hdbc) {
ConnectionClass *conn = (ConnectionClass *) hdbc;
mylog("calling CC_get_error\n");
if (CC_get_error(conn, &status, &msg)) {
mylog("CC_get_error: status = %d, msg = #%s#\n", status, msg);
if (NULL == msg) {
if (NULL != szSqlState)
strcpy((char*)szSqlState, "00000");
if (NULL != pcbErrorMsg)
*pcbErrorMsg = 0;
if ((NULL != szErrorMsg) && (cbErrorMsgMax > 0))
szErrorMsg[0] = '\0';
return SQL_NO_DATA_FOUND;
}
if (NULL != pcbErrorMsg)
*pcbErrorMsg = (SWORD)strlen(msg);
if ((NULL != szErrorMsg) && (cbErrorMsgMax > 0))
strncpy_null((char*)szErrorMsg, msg, cbErrorMsgMax);
if (NULL != pfNativeError)
*pfNativeError = status;
if (NULL != szSqlState)
switch(status) {
case STMT_OPTION_VALUE_CHANGED:
case CONN_OPTION_VALUE_CHANGED:
strcpy((char*)szSqlState, "01S02");
break;
case STMT_TRUNCATED:
case CONN_TRUNCATED:
strcpy((char*)szSqlState, "01004");
/*// data truncated */
break;
case CONN_INIREAD_ERROR:
strcpy((char*)szSqlState, "IM002");
/*// data source not found */
break;
case CONN_OPENDB_ERROR:
strcpy((char*)szSqlState, "08001");
/*// unable to connect to data source */
break;
case CONN_INVALID_AUTHENTICATION:
case CONN_AUTH_TYPE_UNSUPPORTED:
strcpy((char*)szSqlState, "28000");
break;
case CONN_STMT_ALLOC_ERROR:
strcpy((char*)szSqlState, "S1001");
/*// memory allocation failure */
break;
case CONN_IN_USE:
strcpy((char*)szSqlState, "S1000");
/*// general error */
break;
case CONN_UNSUPPORTED_OPTION:
strcpy((char*)szSqlState, "IM001");
/*// driver does not support this function */
case CONN_INVALID_ARGUMENT_NO:
strcpy((char*)szSqlState, "S1009");
/*// invalid argument value */
break;
case CONN_TRANSACT_IN_PROGRES:
strcpy((char*)szSqlState, "S1010");
/*// when the user tries to switch commit mode in a transaction */
/*// -> function sequence error */
break;
case CONN_NO_MEMORY_ERROR:
strcpy((char*)szSqlState, "S1001");
break;
case CONN_NOT_IMPLEMENTED_ERROR:
case STMT_NOT_IMPLEMENTED_ERROR:
strcpy((char*)szSqlState, "S1C00");
break;
case CONN_VALUE_OUT_OF_RANGE:
case STMT_VALUE_OUT_OF_RANGE:
strcpy((char*)szSqlState, "22003");
break;
default:
strcpy((char*)szSqlState, "S1000");
/*// general error */
break;
}
} else {
mylog("CC_Get_error returned nothing.\n");
if (NULL != szSqlState)
strcpy((char*)szSqlState, "00000");
if (NULL != pcbErrorMsg)
*pcbErrorMsg = 0;
if ((NULL != szErrorMsg) && (cbErrorMsgMax > 0))
szErrorMsg[0] = '\0';
return SQL_NO_DATA_FOUND;
}
return SQL_SUCCESS;
} else if (SQL_NULL_HENV != henv) {
EnvironmentClass *env = (EnvironmentClass *)henv;
if(EN_get_error(env, &status, &msg)) {
mylog("EN_get_error: status = %d, msg = #%s#\n", status, msg);
if (NULL == msg) {
if (NULL != szSqlState)
strcpy((char*)szSqlState, "00000");
if (NULL != pcbErrorMsg)
*pcbErrorMsg = 0;
if ((NULL != szErrorMsg) && (cbErrorMsgMax > 0))
szErrorMsg[0] = '\0';
return SQL_NO_DATA_FOUND;
}
if (NULL != pcbErrorMsg)
*pcbErrorMsg = (SWORD)strlen(msg);
if ((NULL != szErrorMsg) && (cbErrorMsgMax > 0))
strncpy_null((char*)szErrorMsg, msg, cbErrorMsgMax);
if (NULL != pfNativeError)
*pfNativeError = status;
if(szSqlState) {
switch(status) {
case ENV_ALLOC_ERROR:
/*// memory allocation failure */
strcpy((char*)szSqlState, "S1001");
break;
default:
strcpy((char*)szSqlState, "S1000");
/*// general error */
break;
}
}
} else {
if (NULL != szSqlState)
strcpy((char*)szSqlState, "00000");
if (NULL != pcbErrorMsg)
*pcbErrorMsg = 0;
if ((NULL != szErrorMsg) && (cbErrorMsgMax > 0))
szErrorMsg[0] = '\0';
return SQL_NO_DATA_FOUND;
}
return SQL_SUCCESS;
}
if (NULL != szSqlState)
strcpy((char*)szSqlState, "00000");
if (NULL != pcbErrorMsg)
*pcbErrorMsg = 0;
if ((NULL != szErrorMsg) && (cbErrorMsgMax > 0))
szErrorMsg[0] = '\0';
return SQL_NO_DATA_FOUND;
}
/*********************************************************************/
/*
* EnvironmentClass implementation
*/
EnvironmentClass
*EN_Constructor(void)
{
EnvironmentClass *rv;
rv = (EnvironmentClass *) malloc(sizeof(EnvironmentClass));
if( rv) {
rv->errormsg = 0;
rv->errornumber = 0;
}
return rv;
}
char
EN_Destructor(EnvironmentClass *self)
{
int lf;
char rv = 1;
mylog("in EN_Destructor, self=%u\n", self);
/*// the error messages are static strings distributed throughout */
/*// the source--they should not be freed */
/* Free any connections belonging to this environment */
for (lf = 0; lf < MAX_CONNECTIONS; lf++) {
if (conns[lf] && conns[lf]->henv == (HENV) self)
rv = rv && CC_Destructor(conns[lf]);
}
mylog("exit EN_Destructor: rv = %d\n", rv);
free( self );
return rv;
}
char
EN_get_error(EnvironmentClass *self, int *number, char **message)
{
if(self && self->errormsg && self->errornumber) {
*message = self->errormsg;
*number = self->errornumber;
self->errormsg = 0;
self->errornumber = 0;
return 1;
} else {
return 0;
}
}
char
EN_add_connection(EnvironmentClass *self, ConnectionClass *conn)
{
int i;
mylog("EN_add_connection: self = %u, conn = %u\n", self, conn);
for (i = 0; i < MAX_CONNECTIONS; i++) {
if ( ! conns[i]) {
conn->henv = (HENV) self;
conns[i] = conn;
mylog(" added at i =%d, conn->henv = %u, conns[i]->henv = %u\n", i, conn->henv, conns[i]->henv);
return TRUE;
}
}
return FALSE;
}
char
EN_remove_connection(EnvironmentClass *self, ConnectionClass *conn)
{
int i;
for (i = 0; i < MAX_CONNECTIONS; i++)
if (conns[i] == conn && conns[i]->status != CONN_EXECUTING) {
conns[i] = NULL;
return TRUE;
}
return FALSE;
}
void
EN_log_error(char *func, char *desc, EnvironmentClass *self)
{
if (self) {
qlog("ENVIRON ERROR: func=%s, desc='%s', errnum=%d, errmsg='%s'\n", func, desc, self->errornumber, self->errormsg);
}
else
qlog("INVALID ENVIRON HANDLE ERROR: func=%s, desc='%s'\n", func, desc);
}
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