/* * SQLGetAvailableDrivers.c * * $Id: SQLGetAvailableDrivers.c,v 1.10 2006/01/20 15:58:35 source Exp $ * * Get a list of all available drivers * * The iODBC driver manager. * * Copyright (C) 1996-2006 by OpenLink Software <iodbc@openlinksw.com> * All Rights Reserved. * * This software is released under the terms of either of the following * licenses: * * - GNU Library General Public License (see LICENSE.LGPL) * - The BSD License (see LICENSE.BSD). * * Note that the only valid version of the LGPL license as far as this * project is concerned is the original GNU Library General Public License * Version 2, dated June 1991. * * While not mandated by the BSD license, any patches you make to the * iODBC source code may be contributed back into the iODBC project * at your discretion. Contributions will benefit the Open Source and * Data Access community as a whole. Submissions may be made at: * * http://www.iodbc.org * * * GNU Library Generic Public License Version 2 * ============================================ * 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; only * Version 2 of the License dated June 1991. * * 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 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA * * * The BSD License * =============== * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * 3. Neither the name of OpenLink Software Inc. nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL OPENLINK OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include <iodbc.h> #include <odbcinst.h> #include <unicode.h> #include "misc.h" #include "inifile.h" #include "iodbc_error.h" BOOL GetAvailableDrivers (LPCSTR lpszInfFile, LPSTR lpszBuf, WORD cbBufMax, WORD * pcbBufOut, BOOL infFile) { int sect_len = 0; WORD curr = 0; BOOL retcode = FALSE; PCONFIG pCfg; char *szId; if (!lpszBuf || !cbBufMax) { PUSH_ERROR (ODBC_ERROR_INVALID_BUFF_LEN); goto quit; } /* Open the file to read from */ if (_iodbcdm_cfg_init (&pCfg, lpszInfFile, FALSE)) { PUSH_ERROR (ODBC_ERROR_COMPONENT_NOT_FOUND); goto quit; } /* Get the ODBC Drivers section */ #ifdef WIN32 if (_iodbcdm_cfg_find (pCfg, "ODBC 32 bit Drivers", NULL)) #else if (_iodbcdm_cfg_find (pCfg, "ODBC Drivers", NULL)) #endif { PUSH_ERROR (ODBC_ERROR_COMPONENT_NOT_FOUND); goto done; } while (curr < cbBufMax && 0 == _iodbcdm_cfg_nextentry (pCfg)) { if (_iodbcdm_cfg_section (pCfg)) break; if (_iodbcdm_cfg_define (pCfg) && pCfg->id) { szId = pCfg->id; while (infFile && *szId == '"') szId++; sect_len = STRLEN (szId); if (!sect_len) { PUSH_ERROR (ODBC_ERROR_INVALID_INF); goto done; } while (infFile && *(szId + sect_len - 1) == '"') sect_len -= 1; sect_len = sect_len > cbBufMax - curr ? cbBufMax - curr : sect_len; if (sect_len) memmove (lpszBuf + curr, szId, sect_len); else { PUSH_ERROR (ODBC_ERROR_INVALID_INF); goto done; } curr += sect_len; lpszBuf[curr++] = 0; } } if (curr < cbBufMax) lpszBuf[curr + 1] = 0; if (pcbBufOut) *pcbBufOut = curr; retcode = TRUE; done: _iodbcdm_cfg_done (pCfg); quit: return retcode; } BOOL INSTAPI SQLGetAvailableDrivers (LPCSTR lpszInfFile, LPSTR lpszBuf, WORD cbBufMax, WORD * pcbBufOut) { BOOL retcode = FALSE; WORD lenBufOut; /* Get from the user files */ CLEAR_ERROR (); switch (configMode) { case ODBC_BOTH_DSN: case ODBC_USER_DSN: wSystemDSN = USERDSN_ONLY; break; case ODBC_SYSTEM_DSN: wSystemDSN = SYSTEMDSN_ONLY; break; } retcode = GetAvailableDrivers (lpszInfFile, lpszBuf, cbBufMax, &lenBufOut, FALSE); if (pcbBufOut) *pcbBufOut = lenBufOut; wSystemDSN = USERDSN_ONLY; configMode = ODBC_BOTH_DSN; return retcode; } BOOL INSTAPI SQLGetAvailableDriversW (LPCWSTR lpszInfFile, LPWSTR lpszBuf, WORD cbBufMax, WORD FAR * pcbBufOut) { BOOL retcode = FALSE; char *_inf_u8 = NULL; char *_buffer_u8 = NULL; SQLCHAR *ptr; SQLWCHAR *ptrW; WORD len = 0, length; _inf_u8 = (char *) dm_SQL_WtoU8 ((SQLWCHAR *) lpszInfFile, SQL_NTS); if (_inf_u8 == NULL && lpszInfFile) { PUSH_ERROR (ODBC_ERROR_OUT_OF_MEM); goto done; } if (cbBufMax > 0) { if ((_buffer_u8 = malloc (cbBufMax * UTF8_MAX_CHAR_LEN + 1)) == NULL) { PUSH_ERROR (ODBC_ERROR_OUT_OF_MEM); goto done; } } retcode = SQLGetAvailableDrivers (_inf_u8, _buffer_u8, cbBufMax * UTF8_MAX_CHAR_LEN, pcbBufOut); if (retcode == TRUE) { length = 0; for (ptr = _buffer_u8, ptrW = lpszBuf; *ptr; ptr += STRLEN (ptr) + 1, ptrW += WCSLEN (ptrW) + 1) { dm_StrCopyOut2_U8toW (ptr, ptrW, cbBufMax - 1, &len); length += len; } *ptrW = L'\0'; if (pcbBufOut) *pcbBufOut = length + 1; } done: MEM_FREE (_inf_u8); MEM_FREE (_buffer_u8); return retcode; }