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ma_connection.c
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ma_connection.c
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/************************************************************************************
Copyright (C) 2013,2019 MariaDB Corporation AB
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 2.1 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 see <http://www.gnu.org/licenses>
or write to the Free Software Foundation, Inc.,
51 Franklin St., Fifth Floor, Boston, MA 02110, USA
*************************************************************************************/
#include <ma_odbc.h>
struct st_madb_isolation MADB_IsolationLevel[] =
{
{SQL_TRANSACTION_REPEATABLE_READ, "REPEATABLE READ"},
{SQL_TRANSACTION_READ_COMMITTED, "READ COMMITTED"},
{SQL_TRANSACTION_READ_UNCOMMITTED, "READ UNCOMMITTED"},
{SQL_TRANSACTION_SERIALIZABLE, "SERIALIZABLE"},
{0, 0}
};
/* used by SQLGetFunctions */
SQLUSMALLINT MADB_supported_api[]=
{
SQL_API_SQLALLOCCONNECT,
SQL_API_SQLALLOCENV,
SQL_API_SQLALLOCHANDLE,
SQL_API_SQLALLOCSTMT,
SQL_API_SQLBINDCOL,
SQL_API_SQLBINDPARAM,
SQL_API_SQLCANCEL,
SQL_API_SQLCLOSECURSOR,
SQL_API_SQLCOLATTRIBUTE,
SQL_API_SQLCOLUMNS,
SQL_API_SQLCONNECT,
SQL_API_SQLCOPYDESC,
SQL_API_SQLDATASOURCES,
SQL_API_SQLDESCRIBECOL,
SQL_API_SQLDISCONNECT,
SQL_API_SQLENDTRAN,
SQL_API_SQLERROR,
SQL_API_SQLEXECDIRECT,
SQL_API_SQLEXECUTE,
SQL_API_SQLFETCH,
SQL_API_SQLFETCHSCROLL,
SQL_API_SQLFREECONNECT,
SQL_API_SQLFREEENV,
SQL_API_SQLFREEHANDLE,
SQL_API_SQLFREESTMT,
SQL_API_SQLGETCONNECTATTR,
SQL_API_SQLGETCONNECTOPTION,
SQL_API_SQLGETCURSORNAME,
SQL_API_SQLGETDATA,
SQL_API_SQLGETDESCFIELD,
SQL_API_SQLGETDESCREC,
SQL_API_SQLGETDIAGFIELD,
SQL_API_SQLGETDIAGREC,
SQL_API_SQLGETENVATTR,
SQL_API_SQLGETFUNCTIONS,
SQL_API_SQLGETINFO,
SQL_API_SQLGETSTMTATTR,
SQL_API_SQLGETSTMTOPTION,
SQL_API_SQLGETTYPEINFO,
SQL_API_SQLNUMRESULTCOLS,
SQL_API_SQLPARAMDATA,
SQL_API_SQLPREPARE,
SQL_API_SQLPUTDATA,
SQL_API_SQLROWCOUNT,
SQL_API_SQLSETCONNECTATTR,
SQL_API_SQLSETCONNECTOPTION,
SQL_API_SQLSETCURSORNAME,
SQL_API_SQLSETDESCFIELD,
SQL_API_SQLSETDESCREC,
SQL_API_SQLSETENVATTR,
SQL_API_SQLSETPARAM,
SQL_API_SQLSETSTMTATTR,
SQL_API_SQLSETSTMTOPTION,
SQL_API_SQLSPECIALCOLUMNS,
SQL_API_SQLSTATISTICS,
SQL_API_SQLTABLES,
SQL_API_SQLTRANSACT,
SQL_API_SQLBULKOPERATIONS,
SQL_API_SQLBINDPARAMETER,
SQL_API_SQLBROWSECONNECT,
SQL_API_SQLCOLATTRIBUTES,
SQL_API_SQLCOLUMNPRIVILEGES ,
SQL_API_SQLDESCRIBEPARAM,
SQL_API_SQLDRIVERCONNECT,
SQL_API_SQLDRIVERS,
SQL_API_SQLEXTENDEDFETCH,
SQL_API_SQLFOREIGNKEYS,
SQL_API_SQLMORERESULTS,
SQL_API_SQLNATIVESQL,
SQL_API_SQLNUMPARAMS,
SQL_API_SQLPARAMOPTIONS,
SQL_API_SQLPRIMARYKEYS,
SQL_API_SQLPROCEDURECOLUMNS,
SQL_API_SQLPROCEDURES,
SQL_API_SQLSETPOS,
SQL_API_SQLSETSCROLLOPTIONS,
SQL_API_SQLTABLES,
SQL_API_SQLTABLEPRIVILEGES
};
struct st_ma_connection_methods MADB_Dbc_Methods; /* declared at the end of file */
my_bool CheckConnection(MADB_Dbc *Dbc)
{
if (!Dbc->mariadb)
return FALSE;
if (mysql_get_socket(Dbc->mariadb) == MARIADB_INVALID_SOCKET)
{
/* Check if reconnect option was set */
if (DSN_OPTION(Dbc, MADB_OPT_FLAG_AUTO_RECONNECT))
{
if (!mysql_ping(Dbc->mariadb))
return TRUE;
}
return FALSE;
}
return TRUE;
}
/* {{{ MADB_DbcSetAttr */
SQLRETURN MADB_DbcSetAttr(MADB_Dbc *Dbc, SQLINTEGER Attribute, SQLPOINTER ValuePtr, SQLINTEGER StringLength, my_bool isWChar)
{
MADB_CLEAR_ERROR(&Dbc->Error);
if (!Dbc)
{
/* Todo: check */
if (Attribute != SQL_ATTR_TRACE ||
Attribute != SQL_ATTR_TRACEFILE)
return SQL_INVALID_HANDLE;
return SQL_SUCCESS;
}
switch(Attribute) {
case SQL_ATTR_ACCESS_MODE:
if ((SQLPOINTER)SQL_MODE_READ_WRITE != ValuePtr)
MADB_SetError(&Dbc->Error, MADB_ERR_01S02, NULL, 0);
Dbc->AccessMode= SQL_MODE_READ_WRITE;
break;
#if (ODBCVER >= 0x0351)
case SQL_ATTR_ANSI_APP:
if (ValuePtr != NULL)
{
Dbc->IsAnsi= 1;
Dbc->ConnOrSrcCharset= &SourceAnsiCs;
CopyClientCharset(&SourceAnsiCs, &Dbc->Charset);
}
else
{
Dbc->IsAnsi= 0;
}
break;
#endif
case SQL_ATTR_ASYNC_ENABLE:
if ((SQLPOINTER)SQL_ASYNC_ENABLE_OFF != ValuePtr)
MADB_SetError(&Dbc->Error, MADB_ERR_01S02, NULL, 0);
Dbc->AsyncEnable= SQL_ASYNC_ENABLE_OFF;
break;
case SQL_ATTR_AUTO_IPD:
/* read only */
MADB_SetError(&Dbc->Error, MADB_ERR_HY092, NULL, 0);
break;
case SQL_ATTR_AUTOCOMMIT:
{
SQLULEN ValidAttrs[]= {2, SQL_AUTOCOMMIT_ON, SQL_AUTOCOMMIT_OFF};
MADB_CHECK_ATTRIBUTE(Dbc, ValuePtr, ValidAttrs);
/* if a connection is open, try to apply setting to the connection */
if (Dbc->mariadb)
{
if (Dbc->EnlistInDtc) {
return MADB_SetError(&Dbc->Error, MADB_ERR_25000, NULL, 0);
}
if (mysql_autocommit(Dbc->mariadb, (my_bool)(size_t)ValuePtr))
{
return MADB_SetError(&Dbc->Error, MADB_ERR_HY001, mysql_error(Dbc->mariadb), mysql_errno(Dbc->mariadb));
}
}
Dbc->AutoCommit= (SQLUINTEGER)(SQLULEN)ValuePtr;
}
break;
case SQL_ATTR_CONNECTION_DEAD:
/* read only! */
return MADB_SetError(&Dbc->Error, MADB_ERR_HY092, NULL, 0);
case SQL_ATTR_CURRENT_CATALOG:
{
MADB_FREE(Dbc->CatalogName);
if (isWChar)
{
/* IsAnsi will be set before this, even if it is set before connection */
Dbc->CatalogName= MADB_ConvertFromWChar((SQLWCHAR *)ValuePtr, StringLength, NULL, Dbc->ConnOrSrcCharset, NULL);
}
else
Dbc->CatalogName= _strdup((char *)ValuePtr);
if (Dbc->mariadb &&
mysql_select_db(Dbc->mariadb, Dbc->CatalogName))
{
return MADB_SetError(&Dbc->Error, MADB_ERR_HY001, mysql_error(Dbc->mariadb), mysql_errno(Dbc->mariadb));
}
}
break;
case SQL_ATTR_LOGIN_TIMEOUT:
Dbc->LoginTimeout= (SQLUINTEGER)(SQLULEN)ValuePtr;
break;
case SQL_ATTR_METADATA_ID:
Dbc->MetadataId= (SQLUINTEGER)(SQLULEN)ValuePtr;
break;
case SQL_ATTR_ODBC_CURSORS:
{
SQLULEN ValidAttrs[]= {3, SQL_CUR_USE_IF_NEEDED, SQL_CUR_USE_ODBC, SQL_CUR_USE_DRIVER};
MADB_CHECK_ATTRIBUTE(Dbc, ValuePtr, ValidAttrs);
if ((SQLULEN)ValuePtr != SQL_CUR_USE_ODBC)
MADB_SetError(&Dbc->Error, MADB_ERR_01S02, NULL, 0);
Dbc->OdbcCursors= SQL_CUR_USE_ODBC;
}
break;
case SQL_ATTR_ENLIST_IN_DTC:
/* MS Distributed Transaction Coordinator not supported */
return MADB_SetError(&Dbc->Error, MADB_ERR_HYC00, NULL, 0);
case SQL_ATTR_PACKET_SIZE:
/* if connection was made, return HY001 */
if (Dbc->mariadb)
{
return MADB_SetError(&Dbc->Error, MADB_ERR_HY001, NULL, 0);
}
Dbc->PacketSize= (SQLUINTEGER)(SQLULEN)ValuePtr;
break;
case SQL_ATTR_QUIET_MODE:
Dbc->QuietMode= (HWND)ValuePtr;
break;
case SQL_ATTR_TRACE:
break;
case SQL_ATTR_TRACEFILE:
break;
case SQL_ATTR_TRANSLATE_LIB:
break;
case SQL_ATTR_TRANSLATE_OPTION:
break;
case SQL_ATTR_TXN_ISOLATION:
if (Dbc->mariadb)
{
my_bool ValidTx= FALSE;
unsigned int i;
for (i=0; i < 4; i++)
{
if (MADB_IsolationLevel[i].SqlIsolation == (SQLLEN)ValuePtr)
{
char StmtStr[128];
_snprintf(StmtStr, sizeof(StmtStr), "SET SESSION TRANSACTION ISOLATION LEVEL %s",
MADB_IsolationLevel[i].StrIsolation);
LOCK_MARIADB(Dbc);
if (mysql_query(Dbc->mariadb, StmtStr))
{
UNLOCK_MARIADB(Dbc);
return MADB_SetError(&Dbc->Error, MADB_ERR_HY001, mysql_error(Dbc->mariadb), mysql_errno(Dbc->mariadb));
}
UNLOCK_MARIADB(Dbc);
ValidTx= TRUE;
break;
}
}
if (!ValidTx)
{
return MADB_SetError(&Dbc->Error, MADB_ERR_HY024, NULL, 0);
}
}
Dbc->TxnIsolation= (SQLINTEGER)(SQLLEN)ValuePtr;
break;
default:
break;
}
return Dbc->Error.ReturnValue;
}
/* }}} */
/* {{{ MADB_DbcHetAttr */
SQLRETURN MADB_DbcGetAttr(MADB_Dbc *Dbc, SQLINTEGER Attribute, SQLPOINTER ValuePtr, SQLINTEGER BufferLength, SQLINTEGER *StringLengthPtr, my_bool isWChar)
{
MADB_CLEAR_ERROR(&Dbc->Error);
if (!Dbc)
return SQL_INVALID_HANDLE;
if (!ValuePtr && Attribute != SQL_ATTR_CURRENT_CATALOG)
return SQL_SUCCESS;
if (Attribute == SQL_ATTR_CURRENT_CATALOG && !StringLengthPtr &&
(!ValuePtr || !BufferLength))
{
return MADB_SetError(&Dbc->Error, MADB_ERR_01004, NULL, 0);
}
switch(Attribute) {
case SQL_ATTR_ACCESS_MODE:
*(SQLUINTEGER *)ValuePtr= SQL_MODE_READ_WRITE;
break;
case SQL_ATTR_ASYNC_ENABLE:
*(SQLULEN *)ValuePtr= SQL_ASYNC_ENABLE_OFF;
break;
case SQL_ATTR_AUTO_IPD:
*(SQLUINTEGER *)ValuePtr= SQL_FALSE;
break;
case SQL_ATTR_AUTOCOMMIT:
*(SQLUINTEGER *)ValuePtr= Dbc->AutoCommit;
break;
case SQL_ATTR_CONNECTION_DEAD:
/* ping may fail if status isn't ready, so we need to check errors */
if (mysql_ping(Dbc->mariadb))
*(SQLUINTEGER *)ValuePtr= (mysql_errno(Dbc->mariadb) == CR_SERVER_GONE_ERROR ||
mysql_errno(Dbc->mariadb) == CR_SERVER_LOST) ? SQL_CD_TRUE : SQL_CD_FALSE;
else
*(SQLUINTEGER *)ValuePtr= SQL_CD_FALSE;
break;
case SQL_ATTR_CURRENT_CATALOG:
{
SQLSMALLINT StrLen;
SQLRETURN ret;
ret= MADB_Dbc_GetCurrentDB(Dbc, ValuePtr, BufferLength, &StrLen, isWChar);
/* if we weren't able to determine the current db, we will return the cached catalog name */
if (!SQL_SUCCEEDED(ret) && Dbc->CatalogName)
{
MADB_CLEAR_ERROR(&Dbc->Error);
StrLen= (SQLSMALLINT)MADB_SetString(isWChar ? &Dbc->Charset : 0, ValuePtr, BufferLength,
Dbc->CatalogName, strlen(Dbc->CatalogName), &Dbc->Error);
ret= SQL_SUCCESS;
}
if (StringLengthPtr != NULL)
{
*StringLengthPtr= (SQLINTEGER)StrLen;
}
return ret;
}
case SQL_ATTR_LOGIN_TIMEOUT:
*(SQLUINTEGER *)ValuePtr= Dbc->LoginTimeout;
break;
case SQL_ATTR_CONNECTION_TIMEOUT:
*(SQLUINTEGER *)ValuePtr= 0;
break;
case SQL_ATTR_METADATA_ID:
*(SQLUINTEGER *)ValuePtr= Dbc->MetadataId;
case SQL_ATTR_ODBC_CURSORS:
*(SQLINTEGER *)ValuePtr= SQL_CUR_USE_ODBC;
break;
case SQL_ATTR_ENLIST_IN_DTC:
/* MS Distributed Transaction Coordinator not supported */
MADB_SetError(&Dbc->Error, MADB_ERR_HYC00, NULL, 0);
break;
case SQL_ATTR_PACKET_SIZE:
{
unsigned long packet_size= 0;
mysql_get_option(Dbc->mariadb, MYSQL_OPT_NET_BUFFER_LENGTH, &packet_size);
*(SQLINTEGER *)ValuePtr= (SQLINTEGER)packet_size;
}
break;
case SQL_ATTR_QUIET_MODE:
Dbc->QuietMode= (HWND)ValuePtr;
break;
case SQL_ATTR_TRACE:
break;
case SQL_ATTR_TRACEFILE:
break;
case SQL_ATTR_TRANSLATE_LIB:
break;
case SQL_ATTR_TRANSLATE_OPTION:
break;
case SQL_ATTR_TXN_ISOLATION:
/* TxnIsolation wasn't set before we retrieve it from open connection or
assume a default of REPETABLE_READ */
if (!Dbc->TxnIsolation)
{
*(SQLULEN *)ValuePtr= SQL_TRANSACTION_REPEATABLE_READ;
if (Dbc->mariadb)
{
MYSQL_RES *result;
MYSQL_ROW row;
const char *StmtString= "SELECT VARIABLE_VALUE FROM INFORMATION_SCHEMA.SESSION_VARIABLES WHERE VARIABLE_NAME='TX_ISOLATION'";
LOCK_MARIADB(Dbc);
if (mysql_query(Dbc->mariadb, StmtString))
{
UNLOCK_MARIADB(Dbc);
MADB_SetNativeError(&Dbc->Error, SQL_HANDLE_DBC, Dbc->mariadb);
return Dbc->Error.ReturnValue;
}
result= mysql_store_result(Dbc->mariadb);
UNLOCK_MARIADB(Dbc);
if ((row = mysql_fetch_row(result)))
{
unsigned int i;
for (i=0; i < 4; i++)
if (!strcmp(row[0], MADB_IsolationLevel[i].StrIsolation))
{
*(SQLULEN *)ValuePtr= MADB_IsolationLevel[i].SqlIsolation;
break;
}
}
mysql_free_result(result);
}
}
else
*(SQLULEN *)ValuePtr= Dbc->TxnIsolation;
break;
default:
MADB_SetError(&Dbc->Error, MADB_ERR_HYC00, NULL, 0);
break;
}
return Dbc->Error.ReturnValue;
}
/* }}} */
/* {{{ MADB_DbcInit() */
MADB_Dbc *MADB_DbcInit(MADB_Env *Env)
{
MADB_Dbc *Connection= NULL;
MADB_CLEAR_ERROR(&Env->Error);
if (!(Connection = (MADB_Dbc *)MADB_CALLOC(sizeof(MADB_Dbc))))
goto cleanup;
Connection->AutoCommit= 4;
Connection->Environment= Env;
Connection->Methods= &MADB_Dbc_Methods;
//CopyClientCharset(&SourceAnsiCs, &Connection->Charset);
InitializeCriticalSection(&Connection->cs);
InitializeCriticalSection(&Connection->ListsCs);
/* Not sure that critical section is really needed here - this init routine is called when
no one has the handle yet */
EnterCriticalSection(&Connection->Environment->cs);
/* Save connection in Environment list */
Connection->ListItem.data= (void *)Connection;
Connection->Environment->Dbcs= MADB_ListAdd(Connection->Environment->Dbcs, &Connection->ListItem);
LeaveCriticalSection(&Connection->Environment->cs);
MADB_PutErrorPrefix(NULL, &Connection->Error);
return Connection;
cleanup:
if (Connection)
free(Connection);
else
MADB_SetError(&Env->Error, MADB_ERR_HY001, NULL, 0);
return NULL;
}
/* }}} */
/* {{{ MADB_DbcFree() */
SQLRETURN MADB_DbcFree(MADB_Dbc *Connection)
{
MADB_Env *Env= NULL;
if (!Connection)
return SQL_ERROR;
MDBUG_C_PRINT(Connection, "%sMADB_DbcFree", "\t->");
MDBUG_C_DUMP(Connection, Connection, 0x);
Env= Connection->Environment;
/* TODO: If somebody uses connection it won't help if lock it here. At least it requires
more fingers movements
LOCK_MARIADB(Dbc);*/
if (Connection->mariadb)
{
mysql_close(Connection->mariadb);
Connection->mariadb= NULL;
}
/*UNLOCK_MARIADB(Dbc);*/
/* todo: delete all descriptors */
EnterCriticalSection(&Env->cs);
Connection->Environment->Dbcs= MADB_ListDelete(Connection->Environment->Dbcs, &Connection->ListItem);
LeaveCriticalSection(&Env->cs);
MADB_FREE(Connection->CatalogName);
CloseClientCharset(&Connection->Charset);
MADB_FREE(Connection->DataBase);
MADB_DSN_Free(Connection->Dsn);
DeleteCriticalSection(&Connection->cs);
free(Connection);
return SQL_SUCCESS;
}
/* }}} */
/* {{{ MADB_Dbc_GetCurrentDB */
SQLRETURN MADB_Dbc_GetCurrentDB(MADB_Dbc *Connection, SQLPOINTER CurrentDB, SQLINTEGER CurrentDBLength,
SQLSMALLINT *StringLengthPtr, my_bool isWChar)
{
MADB_Stmt *Stmt;
SQLRETURN ret;
SQLLEN Size;
char Buffer[65 * sizeof(SQLWCHAR)];
MADB_CLEAR_ERROR(&Connection->Error);
ret= MA_SQLAllocHandle(SQL_HANDLE_STMT, (SQLHANDLE) Connection, (SQLHANDLE*)&Stmt);
if (!SQL_SUCCEEDED(ret))
return ret;
if (!SQL_SUCCEEDED(Stmt->Methods->ExecDirect(Stmt, (char *)"SELECT IF(DATABASE() IS NOT NULL,DATABASE(),'null')", SQL_NTS)) ||
!SQL_SUCCEEDED(Stmt->Methods->Fetch(Stmt)))
{
MADB_CopyError(&Connection->Error, &Stmt->Error);
goto end;
}
ret= Stmt->Methods->GetData(Stmt, 1, SQL_CHAR, Buffer, 65, &Size, TRUE);
Size= (SQLSMALLINT)MADB_SetString(isWChar ? & Connection->Charset : 0,
(void *)CurrentDB, BUFFER_CHAR_LEN(CurrentDBLength, isWChar), Buffer,
SQL_NTS, &Connection->Error);
if (StringLengthPtr)
*StringLengthPtr= isWChar ? (SQLSMALLINT)Size * sizeof(SQLWCHAR) : (SQLSMALLINT)Size;
end:
MA_SQLFreeStmt(Stmt, SQL_DROP);
return Connection->Error.ReturnValue;
}
BOOL MADB_SqlMode(MADB_Dbc *Connection, enum enum_madb_sql_mode SqlMode)
{
unsigned int ServerStatus;
mariadb_get_infov(Connection->mariadb, MARIADB_CONNECTION_SERVER_STATUS, (void*)&ServerStatus);
switch (SqlMode)
{
case MADB_NO_BACKSLASH_ESCAPES:
return test(ServerStatus & SERVER_STATUS_NO_BACKSLASH_ESCAPES);
case MADB_ANSI_QUOTES:
return test(ServerStatus & SERVER_STATUS_ANSI_QUOTES);
}
return FALSE;
}
/* }}} */
/* {{{ MADB_DbcEndTran */
SQLRETURN MADB_DbcEndTran(MADB_Dbc *Dbc, SQLSMALLINT CompletionType)
{
MADB_CLEAR_ERROR(&Dbc->Error);
if (!Dbc)
return SQL_INVALID_HANDLE;
LOCK_MARIADB(Dbc);
switch (CompletionType) {
case SQL_ROLLBACK:
if (Dbc->mariadb && mysql_rollback(Dbc->mariadb))
MADB_SetNativeError(&Dbc->Error, SQL_HANDLE_DBC, Dbc->mariadb);
break;
case SQL_COMMIT:
if (Dbc->mariadb && mysql_commit(Dbc->mariadb))
MADB_SetNativeError(&Dbc->Error, SQL_HANDLE_DBC, Dbc->mariadb);
break;
default:
MADB_SetError(&Dbc->Error, MADB_ERR_HY012, NULL, 0);
}
UNLOCK_MARIADB(Dbc);
return Dbc->Error.ReturnValue;
}
/* }}} */
/* {{{ MADB_Dbc_ConnectDB
Mind that this function is used for establishing connection from the setup lib
*/
SQLRETURN MADB_DbcConnectDB(MADB_Dbc *Connection,
MADB_Dsn *Dsn)
{
char StmtStr[128];
unsigned ReportDataTruncation= 1;
unsigned int i;
unsigned long client_flags= 0L;
my_bool my_reconnect= 1;
if (!Connection || !Dsn)
return SQL_ERROR;
MADB_CLEAR_ERROR(&Connection->Error);
if (Connection->mariadb == NULL)
{
if (!(Connection->mariadb= mysql_init(NULL)))
{
MADB_SetError(&Connection->Error, MADB_ERR_HY001, NULL, 0);
goto end;
}
}
if( !MADB_IS_EMPTY(Dsn->ConnCPluginsDir))
{
mysql_optionsv(Connection->mariadb, MYSQL_PLUGIN_DIR, Dsn->ConnCPluginsDir);
}
else
{
const char *DefaultLocation= MADB_GetDefaultPluginsDir(Connection);
if (DefaultLocation != NULL)
{
mysql_optionsv(Connection->mariadb, MYSQL_PLUGIN_DIR, DefaultLocation);
}
}
if (Dsn->ReadMycnf != '\0')
{
mysql_optionsv(Connection->mariadb, MYSQL_READ_DEFAULT_GROUP, (void *)"odbc");
}
/* If a client character set was specified in DSN, we will always use it.
Otherwise for ANSI applications we will use the current character set,
for unicode connections we use utf8
*/
{
const char* cs_name= NULL;
if (!MADB_IS_EMPTY(Dsn->CharacterSet))
{
cs_name= Dsn->CharacterSet;
}
else if (Connection->IsAnsi)
{
MARIADB_CHARSET_INFO *cs= mariadb_get_charset_by_name("auto");
cs_name= cs->csname;
}
if (InitClientCharset(&Connection->Charset, MADB_IS_EMPTY(cs_name) ? "utf8mb4" : cs_name))
{
/* Memory allocation error */
MADB_SetError(&Connection->Error, MADB_ERR_HY001, NULL, 0);
goto end;
}
if (iOdbc() && strcmp(Connection->Charset.cs_info->csname, "swe7") == 0)
{
MADB_SetError(&Connection->Error, MADB_ERR_HY001, "Charset SWE7 is not supported with iODBC", 0);
goto end;
}
if (!Connection->IsAnsi || iOdbc())
{
/* If application is not ansi, we should convert wchar into connection string */
Connection->ConnOrSrcCharset= &Connection->Charset;
}
}
/* todo: error handling */
mysql_optionsv(Connection->mariadb, MYSQL_SET_CHARSET_NAME, Connection->Charset.cs_info->csname);
if (Dsn->InitCommand && Dsn->InitCommand[0])
mysql_optionsv(Connection->mariadb, MYSQL_INIT_COMMAND, Dsn->InitCommand);
if (Dsn->ConnectionTimeout)
mysql_optionsv(Connection->mariadb, MYSQL_OPT_CONNECT_TIMEOUT, (const char *)&Dsn->ConnectionTimeout);
Connection->Options= Dsn->Options;
if (DSN_OPTION(Connection, MADB_OPT_FLAG_AUTO_RECONNECT))
mysql_optionsv(Connection->mariadb, MYSQL_OPT_RECONNECT, &my_reconnect);
if (Dsn->IsNamedPipe) /* DSN_OPTION(Connection, MADB_OPT_FLAG_NAMED_PIPE) */
mysql_optionsv(Connection->mariadb, MYSQL_OPT_NAMED_PIPE, (void *)Dsn->ServerName);
if (DSN_OPTION(Connection, MADB_OPT_FLAG_NO_SCHEMA))
client_flags|= CLIENT_NO_SCHEMA;
if (DSN_OPTION(Connection, MADB_OPT_FLAG_IGNORE_SPACE))
client_flags|= CLIENT_IGNORE_SPACE;
if (DSN_OPTION(Connection, MADB_OPT_FLAG_FOUND_ROWS))
client_flags|= CLIENT_FOUND_ROWS;
if (DSN_OPTION(Connection, MADB_OPT_FLAG_COMPRESSED_PROTO))
client_flags|= CLIENT_COMPRESS;
if (DSN_OPTION(Connection, MADB_OPT_FLAG_MULTI_STATEMENTS))
client_flags|= CLIENT_MULTI_STATEMENTS;
/* enable truncation reporting */
mysql_optionsv(Connection->mariadb, MYSQL_REPORT_DATA_TRUNCATION, &ReportDataTruncation);
if (Dsn->Socket)
{
int protocol= MYSQL_PROTOCOL_SOCKET;
mysql_optionsv(Connection->mariadb, MYSQL_OPT_PROTOCOL, (void*)&protocol);
}
{
/* I don't think it's possible to have empty strings or only spaces in the string here, but I prefer
to have this paranoid check to make sure we dont' them */
const char *SslKey= ltrim(Dsn->SslKey);
const char *SslCert= ltrim(Dsn->SslCert);
const char *SslCa= ltrim(Dsn->SslCa);
const char *SslCaPath= ltrim(Dsn->SslCaPath);
const char *SslCipher= ltrim(Dsn->SslCipher);
if (!MADB_IS_EMPTY(SslCa)
|| !MADB_IS_EMPTY(SslCaPath)
|| !MADB_IS_EMPTY(SslCipher)
|| !MADB_IS_EMPTY(SslCert)
|| !MADB_IS_EMPTY(SslKey))
{
char Enable= 1;
mysql_optionsv(Connection->mariadb, MYSQL_OPT_SSL_ENFORCE, &Enable);
if (!MADB_IS_EMPTY(SslKey))
{
mysql_optionsv(Connection->mariadb, MYSQL_OPT_SSL_KEY, SslKey);
}
if (!MADB_IS_EMPTY(SslCert))
{
mysql_optionsv(Connection->mariadb, MYSQL_OPT_SSL_CERT, SslCert);
}
if (!MADB_IS_EMPTY(SslCa))
{
mysql_optionsv(Connection->mariadb, MYSQL_OPT_SSL_CA, SslCa);
}
if (!MADB_IS_EMPTY(SslCaPath))
{
mysql_optionsv(Connection->mariadb, MYSQL_OPT_SSL_CAPATH, SslCaPath);
}
if (!MADB_IS_EMPTY(SslCipher))
{
mysql_optionsv(Connection->mariadb, MYSQL_OPT_SSL_CIPHER, SslCipher);
}
if (Dsn->TlsVersion > 0)
{
char TlsVersion[sizeof(TlsVersionName) + sizeof(TlsVersionBits) - 1], *Ptr= TlsVersion; /* All names + (n-1) comma */
unsigned int i, NeedComma= 0;
for (i= 0; i < sizeof(TlsVersionBits); ++i)
{
if (Dsn->TlsVersion & TlsVersionBits[i])
{
if (NeedComma != 0)
{
*Ptr++= ',';
}
else
{
NeedComma= 1;
}
strcpy(Ptr, TlsVersionName[i]);
Ptr += strlen(TlsVersionName[i]);
}
}
mysql_optionsv(Connection->mariadb, MARIADB_OPT_TLS_VERSION, (void *)TlsVersion);
}
}
if (Dsn->SslVerify)
{
const unsigned int verify= 0x01010101;
mysql_optionsv(Connection->mariadb, MYSQL_OPT_SSL_VERIFY_SERVER_CERT, (const char*)&verify);
}
else
{
const unsigned int verify= 0;
mysql_optionsv(Connection->mariadb, MYSQL_OPT_SSL_VERIFY_SERVER_CERT, (const char*)&verify);
}
}
if (Dsn->ForceTls != '\0')
{
const unsigned int ForceTls= 0x01010101;
mysql_optionsv(Connection->mariadb, MYSQL_OPT_SSL_ENFORCE, (const char*)&ForceTls);
}
if (!MADB_IS_EMPTY(Dsn->SslCrlPath))
{
mysql_optionsv(Connection->mariadb, MYSQL_OPT_SSL_CRLPATH, Dsn->SslCrlPath);
}
if (!MADB_IS_EMPTY(Dsn->ServerKey))
{
mysql_optionsv(Connection->mariadb, MYSQL_SERVER_PUBLIC_KEY, Dsn->ServerKey);
}
if (!MADB_IS_EMPTY(Dsn->TlsPeerFp))
{
mysql_optionsv(Connection->mariadb, MARIADB_OPT_TLS_PEER_FP, (void*)Dsn->TlsPeerFp);
}
if (!MADB_IS_EMPTY(Dsn->TlsPeerFpList))
{
mysql_optionsv(Connection->mariadb, MARIADB_OPT_TLS_PEER_FP_LIST, (void*)Dsn->TlsPeerFpList);
}
if (!mysql_real_connect(Connection->mariadb,
Dsn->Socket ? "localhost" : Dsn->ServerName, Dsn->UserName, Dsn->Password,
Dsn->Catalog && Dsn->Catalog[0] ? Dsn->Catalog : NULL, Dsn->Port, Dsn->Socket, client_flags))
{
goto err;
}
/* I guess it is better not to do that at all. Besides SQL_ATTR_PACKET_SIZE is actually not for max packet size */
if (Connection->PacketSize)
{
/*_snprintf(StmtStr, 128, "SET GLOBAL max_allowed_packet=%ld", Connection-> PacketSize);
if (mysql_query(Connection->mariadb, StmtStr))
goto err;*/
}
/* set default catalog */
if (Connection->CatalogName && Connection->CatalogName[0])
{
if (mysql_select_db(Connection->mariadb, Connection->CatalogName))
goto err;
}
/* Turn sql_auto_is_null behavior off.
For more details see: http://bugs.mysql.com/bug.php?id=47005 */
if (mysql_query(Connection->mariadb, "SET SESSION SQL_AUTO_IS_NULL=0"))
goto err;
/* set autocommit behavior */
if (mysql_autocommit(Connection->mariadb, (my_bool)Connection->AutoCommit))
goto err;
/* Set isolation level */
if (Connection->IsolationLevel)
for (i=0; i < 4; i++)
{
if (MADB_IsolationLevel[i].SqlIsolation == Connection->IsolationLevel)
{
_snprintf(StmtStr, 128, "SET SESSION TRANSACTION ISOLATION LEVEL %s",
MADB_IsolationLevel[i].StrIsolation);
if (mysql_query(Connection->mariadb, StmtStr))
goto err;
break;
}
}
MADB_SetCapabilities(Connection, mysql_get_server_version(Connection->mariadb));
goto end;
err:
MADB_SetNativeError(&Connection->Error, SQL_HANDLE_DBC, Connection->mariadb);
end:
if (Connection->Error.ReturnValue == SQL_ERROR && Connection->mariadb)
{
mysql_close(Connection->mariadb);
Connection->mariadb= NULL;
}
return Connection->Error.ReturnValue;
}
/* }}} */
/* {{{ MADB_DbcGetFunctions */
SQLRETURN MADB_DbcGetFunctions(MADB_Dbc *Dbc, SQLUSMALLINT FunctionId, SQLUSMALLINT *SupportedPtr)
{
unsigned int i, Elements= sizeof(MADB_supported_api) / sizeof(SQLUSMALLINT);
switch(FunctionId) {
case SQL_API_ODBC3_ALL_FUNCTIONS:
/* clear ptr */
memset(SupportedPtr, 0, sizeof(SQLUSMALLINT) * SQL_API_ODBC3_ALL_FUNCTIONS_SIZE);
for (i=0; i < Elements; ++i)
{
SQLUSMALLINT function= MADB_supported_api[i];
SupportedPtr[function >> 4]|= (1 << (function & 0x000F));
}
break;
case SQL_API_ALL_FUNCTIONS:
/* Set all to SQL_FALSE (0) */
memset(SupportedPtr, 0, sizeof(SQLUSMALLINT) * 100);
for (i=0; i < Elements; i++)
if (MADB_supported_api[i] < 100)
SupportedPtr[MADB_supported_api[i]]= SQL_TRUE;
break;
default:
*SupportedPtr= SQL_FALSE;
for (i=0; i < Elements; i++)
if (MADB_supported_api[i] == FunctionId)
{
*SupportedPtr= SQL_TRUE;
break;
}
break;
}
return SQL_SUCCESS;
}
/* }}} */
/* {{{ IsStringInfoType */
int IsStringInfoType(SQLSMALLINT InfoType)
{
switch (InfoType)
{
case SQL_ACCESSIBLE_PROCEDURES:
case SQL_ACCESSIBLE_TABLES:
case SQL_CATALOG_NAME:
case SQL_CATALOG_NAME_SEPARATOR:
case SQL_CATALOG_TERM:
case SQL_COLLATION_SEQ:
case SQL_COLUMN_ALIAS:
case SQL_DATA_SOURCE_NAME:
case SQL_DATABASE_NAME:
case SQL_DBMS_NAME:
case SQL_DBMS_VER:
case SQL_DESCRIBE_PARAMETER:
case SQL_DRIVER_NAME:
case SQL_DRIVER_ODBC_VER:
case SQL_DRIVER_VER:
case SQL_EXPRESSIONS_IN_ORDERBY:
case SQL_INTEGRITY:
case SQL_KEYWORDS:
case SQL_LIKE_ESCAPE_CLAUSE:
case SQL_MAX_ROW_SIZE_INCLUDES_LONG:
case SQL_MULT_RESULT_SETS:
case SQL_MULTIPLE_ACTIVE_TXN:
case SQL_NEED_LONG_DATA_LEN:
case SQL_ORDER_BY_COLUMNS_IN_SELECT:
case SQL_PROCEDURE_TERM:
case SQL_PROCEDURES:
case SQL_ROW_UPDATES:
case SQL_SCHEMA_TERM:
case SQL_SEARCH_PATTERN_ESCAPE:
case SQL_SERVER_NAME:
case SQL_SPECIAL_CHARACTERS:
case SQL_TABLE_TERM:
case SQL_USER_NAME:
case SQL_XOPEN_CLI_YEAR:
case SQL_DATA_SOURCE_READ_ONLY:
case SQL_IDENTIFIER_QUOTE_CHAR:
return 1;
}
return 0;
}
/* }}} */
/* {{{ MADB_DbcGetInfo */
SQLRETURN MADB_DbcGetInfo(MADB_Dbc *Dbc, SQLUSMALLINT InfoType, SQLPOINTER InfoValuePtr,
SQLSMALLINT BufferLength, SQLSMALLINT *StringLengthPtr, my_bool isWChar)
{
SQLSMALLINT SLen= 0;
extern Client_Charset utf8;
if (!InfoValuePtr && !StringLengthPtr)
return SQL_SUCCESS;
/* Prety special case - on Windows DM passes NULL instead of InfoValuePtr and own pointer instead of StringLengthPtr.
The logic here is not quite clear - I would imagine that truncated status is more appropriate.
But UnixODBC does not do so, and we are making connector's behavior consistent */
if (InfoValuePtr != NULL && BufferLength == 0 && StringLengthPtr == NULL && IsStringInfoType(InfoType))
{
return SQL_SUCCESS;
}
MADB_CLEAR_ERROR(&Dbc->Error);
switch(InfoType) {
case SQL_ACCESSIBLE_PROCEDURES:
SLen= (SQLSMALLINT)MADB_SetString(isWChar ? &Dbc->Charset : NULL,
(void *)InfoValuePtr, BUFFER_CHAR_LEN(BufferLength, isWChar), "N", SQL_NTS, &Dbc->Error);
break;
case SQL_ACCESSIBLE_TABLES:
SLen= (SQLSMALLINT)MADB_SetString(isWChar ? &Dbc->Charset : NULL,
(void *)InfoValuePtr, BUFFER_CHAR_LEN(BufferLength, isWChar), "N", SQL_NTS, &Dbc->Error);
break;
case SQL_ACTIVE_ENVIRONMENTS:
MADB_SET_NUM_VAL(SQLUSMALLINT, InfoValuePtr, 0, StringLengthPtr);
break;
case SQL_AGGREGATE_FUNCTIONS:
MADB_SET_NUM_VAL(SQLUINTEGER, InfoValuePtr, SQL_AF_ALL | SQL_AF_AVG | SQL_AF_COUNT | SQL_AF_DISTINCT |
SQL_AF_MAX | SQL_AF_MIN | SQL_AF_SUM, StringLengthPtr);
break;
case SQL_ALTER_DOMAIN:
MADB_SET_NUM_VAL(SQLUINTEGER, InfoValuePtr, 0, StringLengthPtr);
break;
case SQL_ALTER_TABLE:
MADB_SET_NUM_VAL(SQLUINTEGER, InfoValuePtr, SQL_AT_ADD_COLUMN | SQL_AT_DROP_COLUMN, StringLengthPtr);
break;
#ifdef SQL_ASYNC_DBC_FUNCTIONS
case SQL_ASYNC_DBC_FUNCTIONS:
MADB_SET_NUM_VAL(SQLUINTEGER, InfoValuePtr, SQL_ASYNC_DBC_NOT_CAPABLE, StringLengthPtr);
break;
#endif
#ifdef SQL_ASYNC_MODE
case SQL_ASYNC_MODE:
MADB_SET_NUM_VAL(SQLUINTEGER, InfoValuePtr, SQL_AM_NONE, StringLengthPtr);
break;
#endif
#ifdef SQL_ASYNC_NOTIFICATION
case SQL_ASYNC_NOTIFICATION:
MADB_SET_NUM_VAL(SQLUINTEGER, InfoValuePtr, SQL_ASYNC_NOTIFICATION_NOT_CAPABLE, StringLengthPtr);
break;
#endif