| 1 | /* |
| 2 | * info.c |
| 3 | * |
| 4 | * $Id$ |
| 5 | * |
| 6 | * Information functions |
| 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 | #include "hstmt.h" |
| 38 | |
| 39 | #include "itrace.h" |
| 40 | |
| 41 | #include <stdio.h> |
| 42 | #include <ctype.h> |
| 43 | |
| 44 | #define SECT1 "ODBC Data Sources" |
| 45 | #define SECT2 "Default" |
| 46 | #define MAX_ENTRIES 1024 |
| 47 | |
| 48 | extern char * _iodbcdm_getinifile (char *buf, int size); |
| 49 | extern char * _iodbcdm_getkeyvalbydsn (char *dsn, int dsnlen, char *keywd, char *value, int size); |
| 50 | |
| 51 | static int |
| 52 | stricmp (const char *s1, const char *s2) |
| 53 | { |
| 54 | int cmp; |
| 55 | |
| 56 | while (*s1) |
| 57 | { |
| 58 | if ((cmp = toupper (*s1) - toupper (*s2)) != 0) |
| 59 | return cmp; |
| 60 | s1++; |
| 61 | s2++; |
| 62 | } |
| 63 | return (*s2) ? -1 : 0; |
| 64 | } |
| 65 | |
| 66 | static int |
| 67 | SectSorter (const void *p1, const void *p2) |
| 68 | { |
| 69 | char **s1 = (char **) p1; |
| 70 | char **s2 = (char **) p2; |
| 71 | |
| 72 | return stricmp (*s1, *s2); |
| 73 | } |
| 74 | |
| 75 | |
| 76 | RETCODE SQL_API |
| 77 | SQLDataSources ( |
| 78 | HENV henv, |
| 79 | UWORD fDir, |
| 80 | UCHAR FAR * szDSN, |
| 81 | SWORD cbDSNMax, |
| 82 | SWORD FAR * pcbDSN, |
| 83 | UCHAR FAR * szDesc, |
| 84 | SWORD cbDescMax, |
| 85 | SWORD FAR * pcbDesc) |
| 86 | { |
| 87 | GENV_t FAR *genv = (GENV_t FAR *) henv; |
| 88 | char *path; |
| 89 | char buf[1024]; |
| 90 | FILE *fp; |
| 91 | int i; |
| 92 | static int cur_entry = -1; |
| 93 | static int num_entries = 0; |
| 94 | static char **sect = NULL; |
| 95 | |
| 96 | if (henv == SQL_NULL_HENV) |
| 97 | { |
| 98 | return SQL_INVALID_HANDLE; |
| 99 | } |
| 100 | /* check argument */ |
| 101 | if (cbDSNMax < 0 || cbDescMax < 0) |
| 102 | { |
| 103 | PUSHSQLERR (genv->herr, en_S1090); |
| 104 | |
| 105 | return SQL_ERROR; |
| 106 | } |
| 107 | if (fDir != SQL_FETCH_FIRST |
| 108 | && fDir != SQL_FETCH_NEXT) |
| 109 | { |
| 110 | PUSHSQLERR (genv->herr, en_S1103); |
| 111 | |
| 112 | return SQL_ERROR; |
| 113 | } |
| 114 | if (cur_entry < 0 || fDir == SQL_FETCH_FIRST) |
| 115 | { |
| 116 | cur_entry = 0; |
| 117 | num_entries = 0; |
| 118 | |
| 119 | |
| 120 | /* |
| 121 | * Open the odbc.ini file |
| 122 | */ |
| 123 | path = (char *) _iodbcdm_getinifile (buf, sizeof (buf)); |
| 124 | if ((fp = fopen (path, "r")) == NULL) |
| 125 | { |
| 126 | return SQL_NO_DATA_FOUND; |
| 127 | } |
| 128 | /* |
| 129 | * Free old section list |
| 130 | */ |
| 131 | if (sect) |
| 132 | { |
| 133 | for (i = 0; i < MAX_ENTRIES; i++) |
| 134 | if (sect[i]) |
| 135 | free (sect[i]); |
| 136 | free (sect); |
| 137 | } |
| 138 | if ((sect = (char **) calloc (MAX_ENTRIES, sizeof (char *))) == NULL) |
| 139 | { |
| 140 | PUSHSQLERR (genv->herr, en_S1011); |
| 141 | |
| 142 | return SQL_ERROR; |
| 143 | } |
| 144 | /* |
| 145 | * Build a dynamic list of sections |
| 146 | */ |
| 147 | while (1) |
| 148 | { |
| 149 | char *str, *p; |
| 150 | |
| 151 | str = fgets (buf, sizeof (buf), fp); |
| 152 | |
| 153 | if (str == NULL) |
| 154 | break; |
| 155 | |
| 156 | if (*str == '[') |
| 157 | { |
| 158 | str++; |
| 159 | for (p = str; *p; p++) |
| 160 | if (*p == ']') |
| 161 | *p = '\0'; |
| 162 | |
| 163 | if (!strcmp (str, SECT1)) |
| 164 | continue; |
| 165 | if (!strcmp (str, SECT2)) |
| 166 | continue; |
| 167 | |
| 168 | /* |
| 169 | * Add this section to the comma separated list |
| 170 | */ |
| 171 | if (num_entries >= MAX_ENTRIES) |
| 172 | break; /* Skip the rest */ |
| 173 | |
| 174 | sect[num_entries++] = (char *) strdup (str); |
| 175 | } |
| 176 | } |
| 177 | |
| 178 | /* |
| 179 | * Sort all entries so we can present a nice list |
| 180 | */ |
| 181 | if (num_entries > 1) |
| 182 | qsort (sect, num_entries, sizeof (char *), SectSorter); |
| 183 | } |
| 184 | /* |
| 185 | * Try to get to the next item |
| 186 | */ |
| 187 | if (cur_entry >= num_entries) |
| 188 | { |
| 189 | cur_entry = 0; /* Next time, start all over again */ |
| 190 | return SQL_NO_DATA_FOUND; |
| 191 | } |
| 192 | /* |
| 193 | * Copy DSN information |
| 194 | */ |
| 195 | STRNCPY (szDSN, sect[cur_entry], cbDSNMax); |
| 196 | /* |
| 197 | glt??? pcbDSN = strlen(szDSN); |
| 198 | */ |
| 199 | /* |
| 200 | * And find the description that goes with this entry |
| 201 | */ |
| 202 | _iodbcdm_getkeyvalbydsn (sect[cur_entry], strlen (sect[cur_entry]), |
| 203 | "Description", (char*) szDesc, cbDescMax); |
| 204 | /* |
| 205 | glt??? pcbDesc = strlen(szDesc); |
| 206 | */ |
| 207 | /* |
| 208 | * Next record |
| 209 | */ |
| 210 | cur_entry++; |
| 211 | |
| 212 | return SQL_SUCCESS; |
| 213 | } |
| 214 | |
| 215 | |
| 216 | RETCODE SQL_API |
| 217 | SQLDrivers ( |
| 218 | HENV henv, |
| 219 | UWORD fDir, |
| 220 | UCHAR FAR * szDrvDesc, |
| 221 | SWORD cbDrvDescMax, |
| 222 | SWORD FAR * pcbDrvDesc, |
| 223 | UCHAR FAR * szDrvAttr, |
| 224 | SWORD cbDrvAttrMax, |
| 225 | SWORD FAR * pcbDrvAttr) |
| 226 | { |
| 227 | GENV_t FAR *genv = (GENV_t FAR *) henv; |
| 228 | |
| 229 | if (henv == SQL_NULL_HENV) |
| 230 | { |
| 231 | return SQL_INVALID_HANDLE; |
| 232 | } |
| 233 | |
| 234 | if (cbDrvDescMax < 0 || cbDrvAttrMax < 0 || cbDrvAttrMax == 1) |
| 235 | { |
| 236 | PUSHSQLERR (genv->herr, en_S1090); |
| 237 | |
| 238 | return SQL_ERROR; |
| 239 | } |
| 240 | |
| 241 | if (fDir != SQL_FETCH_FIRST || fDir != SQL_FETCH_NEXT) |
| 242 | { |
| 243 | PUSHSQLERR (genv->herr, en_S1103); |
| 244 | |
| 245 | return SQL_ERROR; |
| 246 | } |
| 247 | |
| 248 | /*********************/ |
| 249 | return SQL_NO_DATA_FOUND; |
| 250 | } |
| 251 | |
| 252 | |
| 253 | RETCODE SQL_API |
| 254 | SQLGetInfo ( |
| 255 | HDBC hdbc, |
| 256 | UWORD fInfoType, |
| 257 | PTR rgbInfoValue, |
| 258 | SWORD cbInfoValueMax, |
| 259 | SWORD FAR * pcbInfoValue) |
| 260 | { |
| 261 | DBC_t FAR *pdbc = (DBC_t FAR *) hdbc; |
| 262 | ENV_t FAR *penv; |
| 263 | STMT_t FAR *pstmt = NULL; |
| 264 | STMT_t FAR *tpstmt; |
| 265 | HPROC hproc; |
| 266 | RETCODE retcode = SQL_SUCCESS; |
| 267 | |
| 268 | DWORD dword; |
| 269 | int size = 0, len = 0; |
| 270 | char buf[16] = {'\0'}; |
| 271 | |
| 272 | if (hdbc == SQL_NULL_HDBC || pdbc->henv == SQL_NULL_HENV) |
| 273 | { |
| 274 | return SQL_INVALID_HANDLE; |
| 275 | } |
| 276 | |
| 277 | if (cbInfoValueMax < 0) |
| 278 | { |
| 279 | PUSHSQLERR (pdbc->herr, en_S1090); |
| 280 | |
| 281 | return SQL_ERROR; |
| 282 | } |
| 283 | |
| 284 | if ( /* fInfoType < SQL_INFO_FIRST || */ |
| 285 | (fInfoType > SQL_INFO_LAST |
| 286 | && fInfoType < SQL_INFO_DRIVER_START)) |
| 287 | { |
| 288 | PUSHSQLERR (pdbc->herr, en_S1096); |
| 289 | |
| 290 | return SQL_ERROR; |
| 291 | } |
| 292 | |
| 293 | if (fInfoType == SQL_ODBC_VER) |
| 294 | { |
| 295 | sprintf (buf, "%02d.%02d", |
| 296 | (ODBCVER) >> 8, 0x00FF & (ODBCVER)); |
| 297 | |
| 298 | |
| 299 | if (rgbInfoValue != NULL |
| 300 | && cbInfoValueMax > 0) |
| 301 | { |
| 302 | len = STRLEN (buf); |
| 303 | |
| 304 | if (len < cbInfoValueMax - 1) |
| 305 | { |
| 306 | len = cbInfoValueMax - 1; |
| 307 | PUSHSQLERR (pdbc->herr, en_01004); |
| 308 | |
| 309 | retcode = SQL_SUCCESS_WITH_INFO; |
| 310 | } |
| 311 | |
| 312 | STRNCPY (rgbInfoValue, buf, len); |
| 313 | ((char FAR *) rgbInfoValue)[len] = '\0'; |
| 314 | } |
| 315 | |
| 316 | if (pcbInfoValue != NULL) |
| 317 | { |
| 318 | *pcbInfoValue = (SWORD) len; |
| 319 | } |
| 320 | |
| 321 | return retcode; |
| 322 | } |
| 323 | |
| 324 | if (pdbc->state == en_dbc_allocated || pdbc->state == en_dbc_needdata) |
| 325 | { |
| 326 | PUSHSQLERR (pdbc->herr, en_08003); |
| 327 | |
| 328 | return SQL_ERROR; |
| 329 | } |
| 330 | |
| 331 | switch (fInfoType) |
| 332 | { |
| 333 | case SQL_DRIVER_HDBC: |
| 334 | dword = (DWORD) (pdbc->dhdbc); |
| 335 | size = sizeof (dword); |
| 336 | break; |
| 337 | |
| 338 | case SQL_DRIVER_HENV: |
| 339 | penv = (ENV_t FAR *) (pdbc->henv); |
| 340 | dword = (DWORD) (penv->dhenv); |
| 341 | size = sizeof (dword); |
| 342 | break; |
| 343 | |
| 344 | case SQL_DRIVER_HLIB: |
| 345 | penv = (ENV_t FAR *) (pdbc->henv); |
| 346 | dword = (DWORD) (penv->hdll); |
| 347 | size = sizeof (dword); |
| 348 | break; |
| 349 | |
| 350 | case SQL_DRIVER_HSTMT: |
| 351 | if (rgbInfoValue != NULL) |
| 352 | { |
| 353 | pstmt = *((STMT_t FAR **) rgbInfoValue); |
| 354 | } |
| 355 | |
| 356 | for (tpstmt = (STMT_t FAR *) (pdbc->hstmt); |
| 357 | tpstmt != NULL; |
| 358 | tpstmt = tpstmt->next) |
| 359 | { |
| 360 | if (tpstmt == pstmt) |
| 361 | { |
| 362 | break; |
| 363 | } |
| 364 | } |
| 365 | |
| 366 | if (tpstmt == NULL) |
| 367 | { |
| 368 | PUSHSQLERR (pdbc->herr, en_S1009); |
| 369 | |
| 370 | return SQL_ERROR; |
| 371 | } |
| 372 | |
| 373 | dword = (DWORD) (pstmt->dhstmt); |
| 374 | size = sizeof (dword); |
| 375 | break; |
| 376 | |
| 377 | default: |
| 378 | break; |
| 379 | } |
| 380 | |
| 381 | if (size) |
| 382 | { |
| 383 | if (rgbInfoValue != NULL) |
| 384 | { |
| 385 | *((DWORD *) rgbInfoValue) = dword; |
| 386 | } |
| 387 | |
| 388 | if (pcbInfoValue != NULL) |
| 389 | { |
| 390 | *(pcbInfoValue) = (SWORD) size; |
| 391 | } |
| 392 | |
| 393 | return SQL_SUCCESS; |
| 394 | } |
| 395 | |
| 396 | hproc = _iodbcdm_getproc (hdbc, en_GetInfo); |
| 397 | |
| 398 | if (hproc == SQL_NULL_HPROC) |
| 399 | { |
| 400 | PUSHSQLERR (pdbc->herr, en_IM001); |
| 401 | |
| 402 | return SQL_ERROR; |
| 403 | } |
| 404 | |
| 405 | CALL_DRIVER (hdbc, retcode, hproc, en_GetInfo, |
| 406 | (pdbc->dhdbc, fInfoType, rgbInfoValue, cbInfoValueMax, pcbInfoValue)) |
| 407 | |
| 408 | if (retcode == SQL_ERROR |
| 409 | && fInfoType == SQL_DRIVER_ODBC_VER) |
| 410 | { |
| 411 | STRCPY (buf, "01.00"); |
| 412 | |
| 413 | if (rgbInfoValue != NULL |
| 414 | && cbInfoValueMax > 0) |
| 415 | { |
| 416 | len = STRLEN (buf); |
| 417 | |
| 418 | if (len < cbInfoValueMax - 1) |
| 419 | { |
| 420 | len = cbInfoValueMax - 1; |
| 421 | PUSHSQLERR (pdbc->herr, en_01004); |
| 422 | } |
| 423 | |
| 424 | STRNCPY (rgbInfoValue, buf, len); |
| 425 | ((char FAR *) rgbInfoValue)[len] = '\0'; |
| 426 | } |
| 427 | |
| 428 | if (pcbInfoValue != NULL) |
| 429 | { |
| 430 | *pcbInfoValue = (SWORD) len; |
| 431 | } |
| 432 | |
| 433 | /* what should we return in this case ???? */ |
| 434 | } |
| 435 | |
| 436 | return retcode; |
| 437 | } |
| 438 | |
| 439 | |
| 440 | RETCODE SQL_API |
| 441 | SQLGetFunctions ( |
| 442 | HDBC hdbc, |
| 443 | UWORD fFunc, |
| 444 | UWORD FAR * pfExists) |
| 445 | { |
| 446 | DBC_t FAR *pdbc = (DBC_t FAR *) hdbc; |
| 447 | HPROC hproc; |
| 448 | RETCODE retcode; |
| 449 | |
| 450 | if (hdbc == SQL_NULL_HDBC) |
| 451 | { |
| 452 | return SQL_INVALID_HANDLE; |
| 453 | } |
| 454 | |
| 455 | if (fFunc > SQL_EXT_API_LAST) |
| 456 | { |
| 457 | PUSHSQLERR (pdbc->herr, en_S1095); |
| 458 | |
| 459 | return SQL_ERROR; |
| 460 | } |
| 461 | |
| 462 | if (pdbc->state == en_dbc_allocated |
| 463 | || pdbc->state == en_dbc_needdata) |
| 464 | { |
| 465 | PUSHSQLERR (pdbc->herr, en_S1010); |
| 466 | |
| 467 | return SQL_ERROR; |
| 468 | } |
| 469 | |
| 470 | if (pfExists == NULL) |
| 471 | { |
| 472 | return SQL_SUCCESS; |
| 473 | } |
| 474 | |
| 475 | hproc = _iodbcdm_getproc (hdbc, en_GetFunctions); |
| 476 | |
| 477 | if (hproc != SQL_NULL_HPROC) |
| 478 | { |
| 479 | CALL_DRIVER (hdbc, retcode, hproc, en_GetFunctions, |
| 480 | (pdbc->dhdbc, fFunc, pfExists)) |
| 481 | |
| 482 | return retcode; |
| 483 | } |
| 484 | |
| 485 | if (fFunc == SQL_API_SQLSETPARAM) |
| 486 | { |
| 487 | fFunc = SQL_API_SQLBINDPARAMETER; |
| 488 | } |
| 489 | |
| 490 | if (fFunc != SQL_API_ALL_FUNCTIONS) |
| 491 | { |
| 492 | hproc = _iodbcdm_getproc (hdbc, fFunc); |
| 493 | |
| 494 | if (hproc == SQL_NULL_HPROC) |
| 495 | { |
| 496 | *pfExists = (UWORD) 0; |
| 497 | } |
| 498 | else |
| 499 | { |
| 500 | *pfExists = (UWORD) 1; |
| 501 | } |
| 502 | |
| 503 | return SQL_SUCCESS; |
| 504 | } |
| 505 | |
| 506 | for (fFunc = 0; fFunc < 100; fFunc++) |
| 507 | { |
| 508 | hproc = _iodbcdm_getproc (hdbc, fFunc); |
| 509 | |
| 510 | if (hproc == SQL_NULL_HPROC) |
| 511 | { |
| 512 | pfExists[fFunc] = (UWORD) 0; |
| 513 | } |
| 514 | else |
| 515 | { |
| 516 | pfExists[fFunc] = (UWORD) 1; |
| 517 | } |
| 518 | } |
| 519 | |
| 520 | return SQL_SUCCESS; |
| 521 | } |