/* * SQLGetInstalledDrivers.c * * $Id: SQLGetInstalledDrivers.c,v 1.10 2006/01/20 15:58:35 source Exp $ * * Get a list of installed 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 "iodbc_error.h" #ifdef WIN32 #define SECT1 "ODBC 32 bit Data Sources" #define SECT2 "ODBC 32 bit Drivers" #else #define SECT1 "ODBC Data Sources" #define SECT2 "ODBC Drivers" #endif #define MAX_ENTRIES 1024 extern BOOL GetAvailableDrivers (LPCSTR lpszInfFile, LPSTR lpszBuf, WORD cbBufMax, WORD * pcbBufOut, BOOL infFile); static int SectSorter (const void *p1, const void *p2) { const char **s1 = (const char **) p1; const char **s2 = (const char **) p2; return strcasecmp (*s1, *s2); } BOOL INSTAPI SQLGetInstalledDrivers_Internal (LPSTR lpszBuf, WORD cbBufMax, WORD * pcbBufOut, SQLCHAR waMode) { char buffer[4096], desc[1024], *ptr, *oldBuf = lpszBuf; int i, j, usernum = 0, num_entries = 0; void **sect = NULL; SQLUSMALLINT fDir = SQL_FETCH_FIRST_USER; if (pcbBufOut) *pcbBufOut = 0; /* * Allocate the buffer for the list */ if ((sect = (void **) calloc (MAX_ENTRIES, sizeof (void *))) == NULL) { PUSH_ERROR (ODBC_ERROR_OUT_OF_MEM); return SQL_FALSE; } do { SQLSetConfigMode (fDir == SQL_FETCH_FIRST_SYSTEM ? ODBC_SYSTEM_DSN : ODBC_USER_DSN); SQLGetPrivateProfileString (SECT2, NULL, "", buffer, sizeof (buffer) / sizeof (SQLTCHAR), "odbcinst.ini"); /* For each drivers */ for (ptr = buffer, i = 1; *ptr && i; ptr += STRLEN (ptr) + 1) { /* Add this section to the datasources list */ if (fDir == SQL_FETCH_FIRST_SYSTEM) { for (j = 0; j < usernum; j++) { if (STREQ (sect[j], ptr)) j = usernum; } if (j == usernum + 1) continue; } if (num_entries >= MAX_ENTRIES) { i = 0; break; } /* Skip the rest */ /* ... and its description */ SQLSetConfigMode (fDir == SQL_FETCH_FIRST_SYSTEM ? ODBC_SYSTEM_DSN : ODBC_USER_DSN); SQLGetPrivateProfileString (SECT2, ptr, "", desc, sizeof (desc) / sizeof (SQLTCHAR), "odbcinst.ini"); /* Check if the driver is installed */ if (!STRCASEEQ (desc, "Installed")) continue; /* Copy the driver name */ sect[num_entries++] = STRDUP (ptr); } switch (fDir) { case SQL_FETCH_FIRST_USER: fDir = SQL_FETCH_FIRST_SYSTEM; usernum = num_entries; break; case SQL_FETCH_FIRST_SYSTEM: fDir = SQL_FETCH_FIRST; break; } } while (fDir != SQL_FETCH_FIRST); /* * Sort all entries so we can present a nice list */ if (num_entries > 1) { qsort (sect, num_entries, sizeof (char **), SectSorter); /* Copy back the result */ for (i = 0; cbBufMax > 0 && i < num_entries; i++) { if (waMode == 'A') { STRNCPY (lpszBuf, sect[i], cbBufMax); cbBufMax -= (STRLEN (sect[i]) + 1); lpszBuf += (STRLEN (sect[i]) + 1); } else { dm_StrCopyOut2_A2W (sect[i], (LPWSTR) lpszBuf, cbBufMax, NULL); cbBufMax -= (STRLEN (sect[i]) + 1); lpszBuf += (STRLEN (sect[i]) + 1) * sizeof (wchar_t); } } if (waMode == 'A') *lpszBuf = '\0'; else *((wchar_t *) lpszBuf) = L'\0'; } /* * Free old section list */ if (sect) { for (i = 0; i < MAX_ENTRIES; i++) if (sect[i]) free (sect[i]); free (sect); } if (pcbBufOut) *pcbBufOut = lpszBuf - oldBuf + (waMode == 'A' ? sizeof (char) : sizeof (wchar_t)); return waMode == 'A' ? (oldBuf[0] ? SQL_TRUE : SQL_FALSE) : (((wchar_t *) oldBuf)[0] ? SQL_TRUE : SQL_FALSE); } BOOL INSTAPI SQLGetInstalledDrivers (LPSTR lpszBuf, WORD cbBufMax, WORD * pcbBufOut) { return SQLGetInstalledDrivers_Internal (lpszBuf, cbBufMax, pcbBufOut, 'A'); } BOOL INSTAPI SQLGetInstalledDriversW (LPWSTR lpszBuf, WORD cbBufMax, WORD FAR * pcbBufOut) { return SQLGetInstalledDrivers_Internal ((LPSTR) lpszBuf, cbBufMax, pcbBufOut, 'W'); }