1/* 2 * SQLGetInstalledDrivers.c 3 * 4 * $Id: SQLGetInstalledDrivers.c,v 1.10 2006/01/20 15:58:35 source Exp $ 5 * 6 * Get a list of installed drivers 7 * 8 * The iODBC driver manager. 9 * 10 * Copyright (C) 1996-2006 by OpenLink Software <iodbc@openlinksw.com> 11 * All Rights Reserved. 12 * 13 * This software is released under the terms of either of the following 14 * licenses: 15 * 16 * - GNU Library General Public License (see LICENSE.LGPL) 17 * - The BSD License (see LICENSE.BSD). 18 * 19 * Note that the only valid version of the LGPL license as far as this 20 * project is concerned is the original GNU Library General Public License 21 * Version 2, dated June 1991. 22 * 23 * While not mandated by the BSD license, any patches you make to the 24 * iODBC source code may be contributed back into the iODBC project 25 * at your discretion. Contributions will benefit the Open Source and 26 * Data Access community as a whole. Submissions may be made at: 27 * 28 * http://www.iodbc.org 29 * 30 * 31 * GNU Library Generic Public License Version 2 32 * ============================================ 33 * This library is free software; you can redistribute it and/or 34 * modify it under the terms of the GNU Library General Public 35 * License as published by the Free Software Foundation; only 36 * Version 2 of the License dated June 1991. 37 * 38 * This library is distributed in the hope that it will be useful, 39 * but WITHOUT ANY WARRANTY; without even the implied warranty of 40 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 41 * Library General Public License for more details. 42 * 43 * You should have received a copy of the GNU Library General Public 44 * License along with this library; if not, write to the Free 45 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 46 * 47 * 48 * The BSD License 49 * =============== 50 * Redistribution and use in source and binary forms, with or without 51 * modification, are permitted provided that the following conditions 52 * are met: 53 * 54 * 1. Redistributions of source code must retain the above copyright 55 * notice, this list of conditions and the following disclaimer. 56 * 2. Redistributions in binary form must reproduce the above copyright 57 * notice, this list of conditions and the following disclaimer in 58 * the documentation and/or other materials provided with the 59 * distribution. 60 * 3. Neither the name of OpenLink Software Inc. nor the names of its 61 * contributors may be used to endorse or promote products derived 62 * from this software without specific prior written permission. 63 * 64 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 65 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 66 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 67 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL OPENLINK OR 68 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 69 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 70 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 71 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 72 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 73 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 74 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 75 */ 76 77 78#include <iodbc.h> 79#include <odbcinst.h> 80#include <unicode.h> 81 82#include "misc.h" 83#include "iodbc_error.h" 84 85#ifdef WIN32 86#define SECT1 "ODBC 32 bit Data Sources" 87#define SECT2 "ODBC 32 bit Drivers" 88#else 89#define SECT1 "ODBC Data Sources" 90#define SECT2 "ODBC Drivers" 91#endif 92 93#define MAX_ENTRIES 1024 94 95extern BOOL GetAvailableDrivers (LPCSTR lpszInfFile, LPSTR lpszBuf, 96 WORD cbBufMax, WORD * pcbBufOut, BOOL infFile); 97 98static int 99SectSorter (const void *p1, const void *p2) 100{ 101 const char **s1 = (const char **) p1; 102 const char **s2 = (const char **) p2; 103 104 return strcasecmp (*s1, *s2); 105} 106 107BOOL INSTAPI 108SQLGetInstalledDrivers_Internal (LPSTR lpszBuf, WORD cbBufMax, 109 WORD * pcbBufOut, SQLCHAR waMode) 110{ 111 char buffer[4096], desc[1024], *ptr, *oldBuf = lpszBuf; 112 int i, j, usernum = 0, num_entries = 0; 113 void **sect = NULL; 114 SQLUSMALLINT fDir = SQL_FETCH_FIRST_USER; 115 116 if (pcbBufOut) 117 *pcbBufOut = 0; 118 119 /* 120 * Allocate the buffer for the list 121 */ 122 if ((sect = (void **) calloc (MAX_ENTRIES, sizeof (void *))) == NULL) 123 { 124 PUSH_ERROR (ODBC_ERROR_OUT_OF_MEM); 125 return SQL_FALSE; 126 } 127 128 do 129 { 130 SQLSetConfigMode (fDir == 131 SQL_FETCH_FIRST_SYSTEM ? ODBC_SYSTEM_DSN : ODBC_USER_DSN); 132 SQLGetPrivateProfileString (SECT2, NULL, "", buffer, 133 sizeof (buffer) / sizeof (SQLTCHAR), "odbcinst.ini"); 134 135 /* For each drivers */ 136 for (ptr = buffer, i = 1; *ptr && i; ptr += STRLEN (ptr) + 1) 137 { 138 /* Add this section to the datasources list */ 139 if (fDir == SQL_FETCH_FIRST_SYSTEM) 140 { 141 for (j = 0; j < usernum; j++) 142 { 143 if (STREQ (sect[j], ptr)) 144 j = usernum; 145 } 146 if (j == usernum + 1) 147 continue; 148 } 149 150 if (num_entries >= MAX_ENTRIES) 151 { 152 i = 0; 153 break; 154 } /* Skip the rest */ 155 156 /* ... and its description */ 157 SQLSetConfigMode (fDir == 158 SQL_FETCH_FIRST_SYSTEM ? ODBC_SYSTEM_DSN : ODBC_USER_DSN); 159 SQLGetPrivateProfileString (SECT2, ptr, "", desc, 160 sizeof (desc) / sizeof (SQLTCHAR), "odbcinst.ini"); 161 162 /* Check if the driver is installed */ 163 if (!STRCASEEQ (desc, "Installed")) 164 continue; 165 166 /* Copy the driver name */ 167 sect[num_entries++] = STRDUP (ptr); 168 } 169 170 switch (fDir) 171 { 172 case SQL_FETCH_FIRST_USER: 173 fDir = SQL_FETCH_FIRST_SYSTEM; 174 usernum = num_entries; 175 break; 176 case SQL_FETCH_FIRST_SYSTEM: 177 fDir = SQL_FETCH_FIRST; 178 break; 179 } 180 } 181 while (fDir != SQL_FETCH_FIRST); 182 183 /* 184 * Sort all entries so we can present a nice list 185 */ 186 if (num_entries > 1) 187 { 188 qsort (sect, num_entries, sizeof (char **), SectSorter); 189 190 /* Copy back the result */ 191 for (i = 0; cbBufMax > 0 && i < num_entries; i++) 192 { 193 if (waMode == 'A') 194 { 195 STRNCPY (lpszBuf, sect[i], cbBufMax); 196 cbBufMax -= (STRLEN (sect[i]) + 1); 197 lpszBuf += (STRLEN (sect[i]) + 1); 198 } 199 else 200 { 201 dm_StrCopyOut2_A2W (sect[i], (LPWSTR) lpszBuf, cbBufMax, NULL); 202 cbBufMax -= (STRLEN (sect[i]) + 1); 203 lpszBuf += (STRLEN (sect[i]) + 1) * sizeof (wchar_t); 204 } 205 } 206 207 if (waMode == 'A') 208 *lpszBuf = '\0'; 209 else 210 *((wchar_t *) lpszBuf) = L'\0'; 211 } 212 213 /* 214 * Free old section list 215 */ 216 if (sect) 217 { 218 for (i = 0; i < MAX_ENTRIES; i++) 219 if (sect[i]) 220 free (sect[i]); 221 free (sect); 222 } 223 224 if (pcbBufOut) 225 *pcbBufOut = 226 lpszBuf - oldBuf + (waMode == 'A' ? sizeof (char) : sizeof (wchar_t)); 227 228 return waMode == 'A' ? (oldBuf[0] ? SQL_TRUE : SQL_FALSE) : 229 (((wchar_t *) oldBuf)[0] ? SQL_TRUE : SQL_FALSE); 230} 231 232BOOL INSTAPI 233SQLGetInstalledDrivers (LPSTR lpszBuf, WORD cbBufMax, WORD * pcbBufOut) 234{ 235 return SQLGetInstalledDrivers_Internal (lpszBuf, cbBufMax, pcbBufOut, 'A'); 236} 237 238BOOL INSTAPI 239SQLGetInstalledDriversW (LPWSTR lpszBuf, WORD cbBufMax, WORD FAR * pcbBufOut) 240{ 241 return SQLGetInstalledDrivers_Internal ((LPSTR) lpszBuf, cbBufMax, 242 pcbBufOut, 'W'); 243} 244