| 1 | /* |
| 2 | * dlproc.c |
| 3 | * |
| 4 | * $Id$ |
| 5 | * |
| 6 | * Load driver and resolve driver's function entry point |
| 7 | * |
| 8 | * The iODBC driver manager. |
| 9 | * |
| 10 | * Copyright (C) 1995 by Ke Jin <kejin@empress.com> |
| 11 | * |
| 12 | * This library is free software; you can redistribute it and/or |
| 13 | * modify it under the terms of the GNU Library General Public |
| 14 | * License as published by the Free Software Foundation; either |
| 15 | * version 2 of the License, or (at your option) any later version. |
| 16 | * |
| 17 | * This library is distributed in the hope that it will be useful, |
| 18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 20 | * Library General Public License for more details. |
| 21 | * |
| 22 | * You should have received a copy of the GNU Library General Public |
| 23 | * License along with this library; if not, write to the Free |
| 24 | * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
| 25 | */ |
| 26 | |
| 27 | #include "config.h" |
| 28 | |
| 29 | #include "isql.h" |
| 30 | #include "isqlext.h" |
| 31 | |
| 32 | #include "dlproc.h" |
| 33 | |
| 34 | #include "herr.h" |
| 35 | #include "henv.h" |
| 36 | #include "hdbc.h" |
| 37 | |
| 38 | #include "itrace.h" |
| 39 | |
| 40 | #include "henv.ci" |
| 41 | |
| 42 | HPROC |
| 43 | _iodbcdm_getproc (HDBC hdbc, int idx) |
| 44 | { |
| 45 | DBC_t FAR *pdbc = (DBC_t FAR *) hdbc; |
| 46 | ENV_t FAR *penv; |
| 47 | HPROC FAR *phproc; |
| 48 | |
| 49 | if (idx <= 0 || idx > SQL_EXT_API_LAST) |
| 50 | /* first entry naver used */ |
| 51 | { |
| 52 | return SQL_NULL_HPROC; |
| 53 | } |
| 54 | |
| 55 | penv = (ENV_t FAR *) (pdbc->henv); |
| 56 | |
| 57 | if (penv == NULL) |
| 58 | { |
| 59 | return SQL_NULL_HPROC; |
| 60 | } |
| 61 | |
| 62 | phproc = penv->dllproc_tab + idx; |
| 63 | |
| 64 | if (*phproc == SQL_NULL_HPROC) |
| 65 | { |
| 66 | int i, en_idx; |
| 67 | |
| 68 | for (i = 0;; i++) |
| 69 | { |
| 70 | en_idx = odbcapi_symtab[i].en_idx; |
| 71 | |
| 72 | if (en_idx == en_NullProc) |
| 73 | { |
| 74 | break; |
| 75 | } |
| 76 | |
| 77 | if (en_idx == idx) |
| 78 | { |
| 79 | *phproc = _iodbcdm_dllproc (penv->hdll, |
| 80 | odbcapi_symtab[i].symbol); |
| 81 | |
| 82 | break; |
| 83 | } |
| 84 | } |
| 85 | } |
| 86 | |
| 87 | return *phproc; |
| 88 | } |
| 89 | |
| 90 | |
| 91 | HDLL |
| 92 | _iodbcdm_dllopen (char FAR * path) |
| 93 | { |
| 94 | return (HDLL) DLL_OPEN (path); |
| 95 | } |
| 96 | |
| 97 | |
| 98 | HPROC |
| 99 | _iodbcdm_dllproc (HDLL hdll, char FAR * sym) |
| 100 | { |
| 101 | return (HPROC) DLL_PROC (hdll, sym); |
| 102 | } |
| 103 | |
| 104 | |
| 105 | int |
| 106 | _iodbcdm_dllclose (HDLL hdll) |
| 107 | { |
| 108 | DLL_CLOSE (hdll); |
| 109 | |
| 110 | return 0; |
| 111 | } |
| 112 | |
| 113 | |
| 114 | char * |
| 115 | _iodbcdm_dllerror () |
| 116 | { |
| 117 | return DLL_ERROR (); |
| 118 | } |
| 119 | |