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1a41acb7 | 1 | /* |
2 | * $Source$ | |
3 | * $Author$ | |
4 | * $Header$ | |
b070f8a1 | 5 | * |
1a41acb7 | 6 | * Copyright (C) 1987, 1988 by the Massachusetts Institute of Technology |
7 | * For copying and distribution information, please see the file | |
8 | * <mit-copyright.h>. | |
9 | * | |
b070f8a1 | 10 | */ |
11 | ||
12 | #ifndef lint | |
048b1b94 | 13 | static char *rcsid_qrtn_dc = "$Header$"; |
b070f8a1 | 14 | #endif lint |
15 | ||
16 | #include <mit-copyright.h> | |
cc0088db | 17 | #include <string.h> |
b070f8a1 | 18 | #include "query.h" |
19 | #include "mr_server.h" | |
048b1b94 | 20 | EXEC SQL INCLUDE sqlca; /* SQL Communications Area */ |
21 | EXEC SQL INCLUDE sqlda; /* SQL Descriptor Area */ | |
22 | #include "qrtn.h" | |
23 | ||
c9a214e4 | 24 | MR_SQLDA_T *SQLDA; |
048b1b94 | 25 | EXEC SQL BEGIN DECLARE SECTION; |
1741dca0 | 26 | int mr_sig_length; |
048b1b94 | 27 | int idummy; |
28 | char cdummy[MR_CDUMMY_LEN]; | |
29 | char stmt_buf[MR_STMTBUF_LEN]; | |
30 | EXEC SQL END DECLARE SECTION; | |
b070f8a1 | 31 | |
32 | char *Argv[16]; | |
33 | ||
34 | int ingres_errno = 0; | |
35 | int mr_errcode = 0; | |
048b1b94 | 36 | EXEC SQL BEGIN DECLARE SECTION; |
37 | int query_timeout = 30; | |
923a939b | 38 | char *database = "moira"; |
048b1b94 | 39 | EXEC SQL END DECLARE SECTION; |
b070f8a1 | 40 | extern char *whoami; |
41 | extern FILE *journal; | |
42 | ||
1741dca0 | 43 | #define INGRES_BAD_DATE1 40206 |
44 | #define INGRES_BAD_DATE2 40207 | |
45 | #define INGRES_DEADLOCK 49900 | |
1b247a36 | 46 | #define INGRES_TIMEOUT 39100 |
45bf7573 | 47 | #define INGRES_BAD_COLUMN 30110 |
48 | #define INGRES_ASGN_ERR 40204 | |
49 | #define INGRES_NO_CURSOR 30120 | |
50 | #define INGRES_NO_STMT 30130 | |
51 | ||
048b1b94 | 52 | /* |
1741dca0 | 53 | * ingerr: Called when Ingres indicates an error. |
b070f8a1 | 54 | */ |
55 | ||
c9a214e4 | 56 | void ingerr() |
b070f8a1 | 57 | { |
45bf7573 | 58 | EXEC SQL BEGIN DECLARE SECTION; |
59 | char err_msg[256]; | |
60 | EXEC SQL END DECLARE SECTION; | |
048b1b94 | 61 | ingres_errno = -sqlca.sqlcode; |
b070f8a1 | 62 | |
048b1b94 | 63 | switch (ingres_errno) { |
1741dca0 | 64 | case INGRES_BAD_DATE1: |
65 | case INGRES_BAD_DATE2: | |
b070f8a1 | 66 | mr_errcode = MR_DATE; |
67 | break; | |
1741dca0 | 68 | case INGRES_DEADLOCK: |
b070f8a1 | 69 | mr_errcode = MR_DEADLOCK; |
70 | com_err(whoami, 0, "INGRES deadlock detected"); | |
71 | break; | |
1b247a36 | 72 | case INGRES_TIMEOUT: |
73 | /* May be something other than timeout! #39100 is "Unknown error" | |
74 | * Really should parse the error message enough to decide if it's a timeout */ | |
75 | mr_errcode = MR_BUSY; | |
76 | com_err(whoami, 0, "timed out getting lock"); | |
77 | break; | |
78 | /* These should never come up unless someone breaks the query table */ | |
79 | case INGRES_NO_CURSOR: | |
45bf7573 | 80 | mr_errcode = MR_INTERNAL; |
81 | com_err(whoami, 0, "Cursor not opened"); | |
82 | break; | |
1b247a36 | 83 | case INGRES_NO_STMT: |
45bf7573 | 84 | mr_errcode = MR_INTERNAL; |
85 | com_err(whoami, 0, "Statement not declared"); | |
86 | break; | |
1b247a36 | 87 | case INGRES_BAD_COLUMN: |
1741dca0 | 88 | mr_errcode = MR_INTERNAL; |
89 | com_err(whoami, 0, "Bad column name in query table"); | |
90 | break; | |
1b247a36 | 91 | case INGRES_ASGN_ERR: |
1741dca0 | 92 | mr_errcode = MR_INTERNAL; |
93 | com_err(whoami, 0, "Error in SQL assignment statement"); | |
94 | break; | |
1b247a36 | 95 | /* Others ??? */ |
96 | default: | |
b070f8a1 | 97 | mr_errcode = MR_INGRES_ERR; |
45bf7573 | 98 | com_err(whoami, MR_INGRES_ERR, " code %d\n", ingres_errno); |
99 | EXEC SQL INQUIRE_SQL(:err_msg = errortext); | |
100 | com_err(whoami, 0, "SQL error text = %s", err_msg); | |
c9a214e4 | 101 | critical_alert("MOIRA", "Moira server encountered INGRES ERROR %d", ingres_errno); |
b070f8a1 | 102 | } |
b070f8a1 | 103 | } |
104 | ||
45bf7573 | 105 | /* This is declarative, not executed. Applies from here on, in this file. */ |
048b1b94 | 106 | EXEC SQL WHENEVER SQLERROR CALL ingerr; |
107 | ||
b070f8a1 | 108 | int mr_open_database() |
109 | { | |
110 | register int i; | |
111 | char *malloc(); | |
c9a214e4 | 112 | MR_SQLDA_T *mr_alloc_SQLDA(); |
b070f8a1 | 113 | static first_open = 1; |
114 | ||
115 | if (first_open) { | |
116 | first_open = 0; | |
117 | ||
118 | /* initialize local argv */ | |
119 | for (i = 0; i < 16; i++) | |
120 | Argv[i] = malloc(ARGLEN); | |
121 | ||
c9a214e4 | 122 | SQLDA = mr_alloc_SQLDA(); |
123 | ||
b070f8a1 | 124 | incremental_init(); |
125 | flush_cache(); | |
126 | } | |
127 | ||
128 | ingres_errno = 0; | |
129 | mr_errcode = 0; | |
130 | ||
131 | /* open the database */ | |
048b1b94 | 132 | #ifsql INGRES |
923a939b | 133 | EXEC SQL CONNECT :database; |
1741dca0 | 134 | if(ingres_errno) |
135 | return (ingres_errno); | |
048b1b94 | 136 | EXEC SQL set lockmode session where level = table, timeout = :query_timeout; |
137 | EXEC SQL set lockmode on capacls where readlock = shared; | |
138 | EXEC SQL set lockmode on alias where readlock = shared; | |
139 | #endsql | |
140 | #ifsql INFORMIX | |
141 | EXEC SQL DATABASE moira | |
142 | #endsql | |
1741dca0 | 143 | |
144 | if(ingres_errno) | |
145 | return(mr_errcode); | |
146 | ||
147 | EXEC SQL SELECT SIZE(signature) INTO :mr_sig_length FROM users WHERE users_id=0; /* Harmless on second open */ | |
3e6ff9e4 | 148 | EXEC SQL COMMIT WORK; |
1741dca0 | 149 | if(ingres_errno) |
150 | return(mr_errcode); | |
151 | ||
152 | return(MR_SUCCESS); | |
b070f8a1 | 153 | } |
154 | ||
155 | int mr_close_database() | |
156 | { | |
157 | flush_cache(); | |
048b1b94 | 158 | #ifsql INGRES |
159 | EXEC SQL DISCONNECT; | |
160 | #endsql | |
b070f8a1 | 161 | } |
162 | ||
163 | mr_check_access(cl, name, argc, argv_ro) | |
164 | client *cl; | |
165 | char *name; | |
166 | int argc; | |
167 | char *argv_ro[]; | |
168 | { | |
169 | struct query *q; | |
170 | struct query *get_query_by_name(); | |
171 | ||
172 | ingres_errno = 0; | |
173 | mr_errcode = 0; | |
174 | ||
175 | q = get_query_by_name(name, cl->args->mr_version_no); | |
176 | if (q == (struct query *)0) | |
177 | return(MR_NO_HANDLE); | |
178 | ||
048b1b94 | 179 | return(mr_verify_query(cl, q, argc, argv_ro)); |
b070f8a1 | 180 | } |
181 | ||
182 | mr_process_query(cl, name, argc, argv_ro, action, actarg) | |
183 | client *cl; | |
184 | char *name; | |
185 | int argc; | |
186 | char *argv_ro[]; | |
187 | int (*action)(); | |
188 | char *actarg; | |
189 | { | |
190 | register struct query *q; | |
191 | register int status; | |
192 | register struct validate *v; | |
193 | char qual[256]; | |
194 | char sort[32]; | |
195 | char *pqual; | |
196 | char *psort; | |
048b1b94 | 197 | EXEC SQL BEGIN DECLARE SECTION; |
198 | char *table_name; | |
199 | EXEC SQL END DECLARE SECTION; | |
b070f8a1 | 200 | struct save_queue *sq; |
201 | struct query *get_query_by_name(); | |
202 | int sq_save_args(); | |
203 | struct save_queue *sq_create(); | |
204 | char *build_sort(); | |
205 | ||
206 | ingres_errno = 0; | |
207 | mr_errcode = 0; | |
208 | ||
209 | /* list queries command */ | |
210 | if (!strcmp(name, "_list_queries")) { | |
211 | list_queries(cl->args->mr_version_no, action, actarg); | |
212 | return(MR_SUCCESS); | |
213 | } | |
214 | ||
215 | /* help query command */ | |
216 | if (!strcmp(name, "_help")) { | |
217 | if (argc < 1) | |
218 | return(MR_ARGS); | |
219 | q = get_query_by_name(argv_ro[0], cl->args->mr_version_no); | |
220 | if (q == (struct query *)0) return(MR_NO_HANDLE); | |
221 | help_query(q, action, actarg); | |
222 | return(MR_SUCCESS); | |
223 | } | |
224 | ||
225 | /* get query structure, return error if named query does not exist */ | |
226 | q = get_query_by_name(name, cl->args->mr_version_no); | |
227 | if (q == (struct query *)0) return(MR_NO_HANDLE); | |
228 | v = q->validate; | |
229 | ||
230 | /* setup argument vector, verify access and arguments */ | |
231 | if ((status = mr_verify_query(cl, q, argc, argv_ro)) != MR_SUCCESS) | |
232 | goto out; | |
233 | ||
234 | /* perform any special query pre-processing */ | |
235 | if (v && v->pre_rtn) { | |
236 | status = (*v->pre_rtn)(q, Argv, cl, 0); | |
237 | if (status != MR_SUCCESS) | |
238 | goto out; | |
239 | } | |
240 | ||
241 | switch (q->type) { | |
242 | case RETRIEVE: | |
243 | /* for queries that do not permit wildcarding, check if row | |
244 | uniquely exists */ | |
245 | if (v && v->field) { | |
048b1b94 | 246 | status = validate_row(q, Argv, v); |
b070f8a1 | 247 | if (status != MR_EXISTS) break; |
248 | } | |
249 | ||
250 | /* build "where" clause if needed */ | |
251 | if (q->qual) { | |
048b1b94 | 252 | build_qual(q->qual, q->argc, Argv, qual); |
b070f8a1 | 253 | pqual = qual; |
254 | } else { | |
255 | pqual = 0; | |
256 | } | |
257 | ||
258 | /* build "sort" clause if needed */ | |
259 | if (v && v->valobj) { | |
260 | psort = build_sort(v, sort); | |
261 | } else { | |
262 | psort = 0; | |
263 | } | |
264 | ||
265 | /* if there is a followup routine, then we must save the results */ | |
266 | /* of the first query for use by the followup routine */ | |
267 | /* if q->rvar = NULL, perform post_rtn only */ | |
268 | if (q->rvar) { | |
269 | if (v && v->post_rtn) { | |
270 | sq = sq_create(); | |
271 | status = do_retrieve(q, pqual, psort, sq_save_args, sq); | |
272 | if (status != MR_SUCCESS) { | |
273 | sq_destroy(sq); | |
274 | break; | |
275 | } | |
276 | status = (*v->post_rtn)(q, sq, v, action, actarg, cl); | |
277 | } else { | |
278 | /* normal retrieve */ | |
279 | status = do_retrieve(q, pqual, psort, action, actarg); | |
280 | } | |
281 | if (status != MR_SUCCESS) break; | |
282 | } else { | |
283 | status = (*v->post_rtn)(q, Argv, cl, action, actarg); | |
284 | } | |
285 | ||
286 | break; | |
287 | ||
288 | case UPDATE: | |
289 | /* see if row already exists */ | |
290 | if (v->field) { | |
291 | status = validate_row(q, Argv, v); | |
292 | if (status != MR_EXISTS) break; | |
293 | } | |
294 | ||
295 | /* build "where" clause and perform update */ | |
296 | /* if q->rvar = NULL, perform post_rtn only */ | |
297 | if (q->rvar) { | |
298 | build_qual(q->qual, q->argc, Argv, qual); | |
299 | incremental_before(q->rtable, qual, argv_ro); | |
300 | status = do_update(q, &Argv[q->argc], qual, action, actarg); | |
301 | incremental_after(q->rtable, qual, argv_ro); | |
302 | if (status != MR_SUCCESS) break; | |
303 | flush_name(argv_ro[0], q->rtable); | |
048b1b94 | 304 | table_name = q->rtable; |
b070f8a1 | 305 | if (strcmp(q->shortname, "sshi") && strcmp(q->shortname, "ssif")) { |
048b1b94 | 306 | EXEC SQL UPDATE tblstats |
307 | SET updates = updates + 1, modtime = 'now' | |
308 | WHERE table_name = :table_name; | |
b070f8a1 | 309 | } |
310 | } | |
311 | ||
312 | /* execute followup routine (if any) */ | |
313 | if (v->post_rtn) status = (*v->post_rtn)(q, Argv, cl); | |
314 | ||
315 | break; | |
316 | ||
317 | case APPEND: | |
318 | /* see if row already exists */ | |
319 | if (v->field) { | |
320 | status = validate_row(q, Argv, v); | |
321 | if (status != MR_NO_MATCH) break; | |
322 | } | |
323 | ||
b070f8a1 | 324 | /* build "where" clause if needed */ |
325 | if (q->qual) { | |
326 | build_qual(q->qual, q->argc, Argv, qual); | |
327 | pqual = qual; | |
328 | } else { | |
329 | pqual = 0; | |
330 | } | |
331 | ||
332 | /* perform the append */ | |
333 | /* if q->rvar = NULL, perform post_rtn only */ | |
334 | if (q->rvar) { | |
335 | incremental_clear_before(); | |
336 | status = do_append(q, &Argv[q->argc], pqual, action, actarg); | |
337 | if (status != MR_SUCCESS) break; | |
338 | if (v && v->object_id) { | |
1b247a36 | 339 | sprintf(qual, "%s.%s = %s",q->rvar, v->object_id, |
45bf7573 | 340 | Argv[q->argc+q->vcnt]); |
b070f8a1 | 341 | incremental_after(q->rtable, qual, argv_ro); |
342 | } else | |
343 | incremental_after(q->rtable, pqual, argv_ro); | |
344 | ||
048b1b94 | 345 | table_name = q->rtable; |
346 | EXEC SQL UPDATE tblstats | |
347 | SET appends = appends + 1, modtime = 'now' | |
348 | WHERE table_name = :table_name; | |
b070f8a1 | 349 | } |
350 | ||
351 | /* execute followup routine */ | |
352 | if (v->post_rtn) status = (*v->post_rtn)(q, Argv, cl); | |
353 | break; | |
354 | ||
355 | case DELETE: | |
356 | /* see if row already exists */ | |
357 | if (v->field) { | |
358 | status = validate_row(q, Argv, v); | |
359 | if (status != MR_EXISTS) break; | |
360 | } | |
361 | ||
362 | /* build "where" clause and perform delete */ | |
363 | /* if q->rvar = NULL, perform post_rtn only */ | |
364 | if (q->rvar) { | |
365 | build_qual(q->qual, q->argc, Argv, qual); | |
048b1b94 | 366 | table_name = q->rtable; |
367 | incremental_before(q->rtable, qual, argv_ro); | |
b070f8a1 | 368 | status = do_delete(q, qual, action, actarg); |
369 | incremental_clear_after(); | |
370 | if (status != MR_SUCCESS) break; | |
371 | flush_name(argv_ro[0], q->rtable); | |
048b1b94 | 372 | EXEC SQL UPDATE tblstats |
373 | SET deletes = deletes + 1, modtime = 'now' | |
374 | WHERE table_name = :table_name; | |
b070f8a1 | 375 | } |
376 | ||
377 | /* execute followup routine */ | |
378 | if (v->post_rtn) status = (*v->post_rtn)(q, Argv, cl); | |
379 | break; | |
380 | ||
381 | } | |
382 | ||
383 | out: | |
384 | if (status == MR_SUCCESS && ingres_errno != 0) { | |
385 | com_err(whoami, MR_INTERNAL, "Server didn't notice INGRES ERROR %d", | |
386 | ingres_errno); | |
387 | status = mr_errcode; | |
388 | } | |
389 | ||
048b1b94 | 390 | if (q->type == RETRIEVE) { |
048b1b94 | 391 | EXEC SQL COMMIT WORK; |
048b1b94 | 392 | } else { |
b070f8a1 | 393 | if (status == MR_SUCCESS) { |
048b1b94 | 394 | EXEC SQL COMMIT WORK; |
b070f8a1 | 395 | if (journal) { |
396 | char buf[1024], *bp; | |
397 | int i; | |
398 | extern time_t now; | |
399 | ||
400 | fprintf(journal, "%% %s %s %s", | |
401 | cl->clname, cl->entity, ctime(&now)); | |
402 | fprintf(journal, "%s[%d] ", q->name, cl->args->mr_version_no); | |
403 | for (i = 0; i < argc; i++) { | |
404 | if (i != 0) { | |
405 | putc(' ', journal); | |
406 | } | |
407 | requote(buf, argv_ro[i], sizeof(buf)); | |
408 | fputs(buf, journal); | |
409 | } | |
410 | putc('\n', journal); | |
411 | fflush(journal); | |
412 | } | |
413 | incremental_update(); | |
414 | } else { | |
1a41acb7 | 415 | cache_abort(); |
b070f8a1 | 416 | if (ingres_errno != INGRES_DEADLOCK) { |
048b1b94 | 417 | EXEC SQL ROLLBACK WORK; |
b070f8a1 | 418 | } |
419 | incremental_flush(); | |
420 | } | |
421 | } | |
1a41acb7 | 422 | cache_commit(); /* commit following abort is safe */ |
b070f8a1 | 423 | |
424 | if (status != MR_SUCCESS && log_flags & LOG_RES) | |
425 | com_err(whoami, status, " (Query failed)"); | |
426 | return(status); | |
427 | } | |
428 | ||
429 | build_qual(fmt, argc, argv, qual) | |
430 | char *fmt; | |
431 | int argc; | |
432 | char *argv[]; | |
433 | char *qual; | |
434 | { | |
435 | register char *c; | |
436 | register int i; | |
437 | char *args[4]; | |
438 | char *index(); | |
439 | ||
440 | c = fmt; | |
441 | for (i = 0; i < argc; i++) { | |
442 | c = index(c, '%'); | |
443 | if (c++ == (char *)0) return(MR_ARGS); | |
444 | if (*c == 's') | |
445 | args[i] = argv[i]; | |
446 | else if (*c == 'd') | |
447 | *(int *)&args[i] = *(int *)argv[i]; /* sigh */ | |
448 | else | |
449 | return(MR_INGRES_ERR); | |
450 | } | |
1a41acb7 | 451 | if (c = index(c, '%')) { |
452 | args[i] = args[i - 1]; | |
453 | } | |
b070f8a1 | 454 | |
455 | switch (argc) { | |
456 | case 0: | |
457 | strcpy(qual, fmt); | |
458 | break; | |
459 | ||
460 | case 1: | |
461 | sprintf(qual, fmt, args[0]); | |
462 | break; | |
463 | ||
464 | case 2: | |
465 | sprintf(qual, fmt, args[0], args[1]); | |
466 | break; | |
467 | ||
468 | case 3: | |
469 | sprintf(qual, fmt, args[0], args[1], args[2]); | |
470 | break; | |
471 | ||
472 | case 4: | |
473 | sprintf(qual, fmt, args[0], args[1], args[2], args[3]); | |
474 | break; | |
1a41acb7 | 475 | |
476 | default: | |
477 | com_err(whoami, MR_INTERNAL, | |
478 | "Internal arg count error processing query"); | |
479 | return(MR_INTERNAL); | |
b070f8a1 | 480 | } |
481 | return(MR_SUCCESS); | |
482 | } | |
483 | ||
484 | char * | |
485 | build_sort(v, sort) | |
486 | register struct validate *v; | |
487 | char *sort; | |
488 | { | |
489 | register struct valobj *vo; | |
490 | register int n; | |
491 | char elem[16]; | |
492 | ||
493 | n = v->objcnt; | |
494 | vo = v->valobj; | |
495 | *sort = 0; | |
496 | ||
497 | while (--n >= 0) { | |
498 | if (vo->type == V_SORT) { | |
048b1b94 | 499 | sprintf(elem, "%d", vo->index + 1); /* Result column number */ |
b070f8a1 | 500 | if (*sort) strcat(sort, ", "); |
501 | strcat(sort, elem); | |
502 | } | |
503 | vo++; | |
504 | } | |
505 | ||
506 | return ((*sort) ? sort : 0); | |
507 | } | |
508 | ||
509 | ||
510 | /* Build arguement vector, verify query and arguments */ | |
511 | ||
512 | mr_verify_query(cl, q, argc, argv_ro) | |
513 | client *cl; | |
514 | struct query *q; | |
515 | int argc; | |
516 | char *argv_ro[]; | |
517 | { | |
518 | register int argreq; | |
519 | register int status; | |
520 | register struct validate *v = q->validate; | |
521 | register int i; | |
522 | register int privileged = 0; | |
99e09b48 | 523 | register char *to,*fr,*stop; |
b070f8a1 | 524 | |
525 | /* copy the arguments into a local argv that we can modify */ | |
526 | if (argc >= QMAXARGS) | |
527 | return(MR_ARGS); | |
528 | for (i = 0; i < argc; i++) { | |
99e09b48 | 529 | /* Single quotes must be doubled for SQL */ |
530 | for (to=Argv[i], fr=argv_ro[i], stop=to+ARGLEN; (*fr) && (to<stop);) { | |
531 | if(*fr=='\'') | |
532 | *to++ = *fr; | |
533 | *to++ = *fr++; | |
534 | } | |
535 | if (*fr) | |
536 | return(MR_ARG_TOO_LONG); | |
537 | *to='\0'; | |
538 | ||
539 | if (*--to == '\\') | |
b070f8a1 | 540 | return(MR_BAD_CHAR); |
541 | } | |
542 | ||
543 | /* check initial query access */ | |
544 | status = check_query_access(q, Argv, cl); | |
545 | if (status != MR_SUCCESS && status != MR_PERM) | |
546 | return(status); | |
547 | if (status == MR_SUCCESS) | |
548 | privileged++; | |
549 | ||
550 | /* check argument count */ | |
551 | argreq = q->argc; | |
552 | if (q->type == UPDATE || q->type == APPEND) argreq += q->vcnt; | |
553 | if (argc != argreq) return(MR_ARGS); | |
554 | ||
555 | /* validate arguments */ | |
556 | if (v && v->valobj) { | |
557 | status = validate_fields(q, Argv, v->valobj, v->objcnt); | |
558 | if (status != MR_SUCCESS) return(status); | |
559 | } | |
560 | ||
561 | /* perform special query access check */ | |
562 | if (!privileged && v && v->acs_rtn) { | |
563 | status = (*v->acs_rtn)(q, Argv, cl); | |
564 | if (status != MR_SUCCESS && status != MR_PERM) | |
565 | return(status); | |
566 | if (status == MR_SUCCESS) | |
567 | privileged++; | |
568 | } | |
569 | ||
570 | return(privileged ? MR_SUCCESS : MR_PERM); | |
571 | } | |
572 | ||
573 | ||
574 | /* This routine caches info from the database. Each query acl is stored | |
575 | * in the query structure, and whether that acl contains everybody. | |
576 | */ | |
577 | ||
578 | check_query_access(q, argv, cl) | |
579 | struct query *q; | |
580 | char *argv[]; | |
581 | client *cl; | |
048b1b94 | 582 | { |
583 | EXEC SQL BEGIN DECLARE SECTION; | |
584 | char *name; | |
585 | int acl_id; | |
586 | int rowcount; | |
587 | int errorno; | |
588 | static int def_uid; | |
589 | EXEC SQL END DECLARE SECTION; | |
b070f8a1 | 590 | int status; |
591 | int client_id; | |
592 | char *client_type; | |
593 | ||
594 | /* initialize default uid */ | |
595 | if (def_uid == 0) { | |
048b1b94 | 596 | EXEC SQL SELECT users_id INTO :def_uid FROM users WHERE login='default'; |
b070f8a1 | 597 | } |
598 | ||
599 | /* get query access control list */ | |
600 | if (q->acl != 0) | |
601 | acl_id = q->acl; | |
602 | else { | |
603 | name = q->shortname; | |
048b1b94 | 604 | EXEC SQL SELECT list_id INTO :acl_id FROM capacls WHERE tag = :name; |
605 | if (sqlca.sqlcode < 0) return(MR_INGRES_ERR); | |
606 | if (sqlca.sqlcode == 100) return(MR_PERM); | |
b070f8a1 | 607 | q->acl = acl_id; |
608 | ||
609 | /* check for default access */ | |
048b1b94 | 610 | EXEC SQL SELECT member_id INTO :acl_id FROM imembers |
611 | WHERE list_id = :acl_id AND member_type = 'USER' | |
612 | AND member_id = :def_uid; | |
613 | if (sqlca.sqlerrd[2] == 0) | |
614 | q->everybody = 0; | |
615 | else | |
616 | q->everybody = 1; | |
b070f8a1 | 617 | } |
618 | ||
619 | if (q->everybody) | |
620 | return(MR_SUCCESS); | |
621 | ||
622 | if (get_client(cl, &client_type, &client_id) != MR_SUCCESS) | |
623 | return(MR_PERM); | |
624 | if (find_member("LIST", acl_id, client_type, client_id, 0)) | |
625 | return(MR_SUCCESS); | |
626 | else | |
627 | return(MR_PERM); | |
048b1b94 | 628 | } |
b070f8a1 | 629 | |
630 | ||
631 | get_client(cl, client_type, client_id) | |
632 | client *cl; | |
633 | char **client_type; | |
634 | int *client_id; | |
635 | { | |
636 | if (cl->users_id > 0) { | |
637 | *client_id = cl->users_id; | |
638 | *client_type = "USER"; | |
639 | return(MR_SUCCESS); | |
640 | } | |
641 | ||
642 | if (cl->client_id < 0) { | |
643 | *client_id = -cl->users_id; | |
644 | *client_type = "KERBEROS"; | |
645 | return(MR_SUCCESS); | |
646 | } | |
647 | ||
648 | return(MR_PERM); | |
649 | } | |
650 | ||
048b1b94 | 651 | find_member(list_type, list_id, member_type, member_id) |
1a41acb7 | 652 | char *list_type; |
048b1b94 | 653 | EXEC SQL BEGIN DECLARE SECTION; |
654 | int list_id; | |
655 | char *member_type; | |
656 | int member_id; | |
657 | EXEC SQL END DECLARE SECTION; | |
658 | { | |
659 | EXEC SQL BEGIN DECLARE SECTION; | |
660 | int flag, errorno; | |
661 | EXEC SQL END DECLARE SECTION; | |
b070f8a1 | 662 | |
663 | if (!strcmp(strtrim(list_type), strtrim(member_type)) && | |
664 | list_id == member_id) | |
665 | return(1); | |
666 | ||
667 | /* see if client is a direct member of list */ | |
048b1b94 | 668 | flag = 0; |
669 | EXEC SQL SELECT member_id INTO :flag FROM imembers | |
670 | WHERE list_id = :list_id AND member_type = :member_type | |
671 | AND member_id = :member_id; | |
672 | if(flag!=0) flag=1; /** Not strictly necessary */ | |
673 | if (sqlca.sqlcode == 0) | |
674 | return(flag); | |
675 | return(0); | |
676 | } | |
b070f8a1 | 677 | |
678 | ||
048b1b94 | 679 | do_retrieve(q, pqual, psort, action, actarg) |
b070f8a1 | 680 | register struct query *q; |
048b1b94 | 681 | EXEC SQL BEGIN DECLARE SECTION; |
b070f8a1 | 682 | char *pqual; |
683 | char *psort; | |
048b1b94 | 684 | EXEC SQL END DECLARE SECTION; |
b070f8a1 | 685 | int (*action)(); |
686 | char *actarg; | |
048b1b94 | 687 | { |
b070f8a1 | 688 | static char **vaddrs = (char **)NULL; |
c9a214e4 | 689 | int j, rowcount; |
b070f8a1 | 690 | |
691 | if (!vaddrs) { | |
692 | register int i; | |
693 | ||
694 | if ((vaddrs = (char **)malloc(sizeof(char *) * QMAXARGS)) == NULL) { | |
695 | com_err(whoami, MR_NO_MEM, "setting up static argv"); | |
696 | exit(1); | |
697 | } | |
45bf7573 | 698 | for (i = 0; i < QMAXARGS; i++) { |
c9a214e4 | 699 | vaddrs[i]=SQLDA->sqlvar[i].sqldata; |
b070f8a1 | 700 | } |
701 | } | |
702 | ||
c9a214e4 | 703 | build_sql_stmt(stmt_buf,"SELECT",q->tlist,vaddrs,pqual); |
048b1b94 | 704 | if(psort) { strcat(stmt_buf," ORDER BY "); strcat(stmt_buf,psort); } |
c9a214e4 | 705 | EXEC SQL PREPARE stmt INTO :SQLDA USING NAMES FROM :stmt_buf; |
99e09b48 | 706 | if(sqlca.sqlcode) |
707 | return(MR_INTERNAL); | |
048b1b94 | 708 | EXEC SQL DECLARE csr001 CURSOR FOR stmt; |
709 | EXEC SQL OPEN csr001; | |
c9a214e4 | 710 | rowcount = 0; |
048b1b94 | 711 | while(1) { |
712 | EXEC SQL FETCH csr001 USING DESCRIPTOR :SQLDA; | |
713 | if(sqlca.sqlcode != 0) break; | |
714 | (*action)(q->vcnt, vaddrs, actarg); | |
c9a214e4 | 715 | rowcount++; |
b070f8a1 | 716 | } |
048b1b94 | 717 | EXEC SQL CLOSE csr001; |
b070f8a1 | 718 | |
719 | if (mr_errcode) return(mr_errcode); | |
c9a214e4 | 720 | return ((rowcount == 0) ? MR_NO_MATCH : MR_SUCCESS); |
048b1b94 | 721 | } |
722 | ||
cc0088db | 723 | char *sqlstrstr(str,pat) |
724 | char *str; | |
725 | char *pat; | |
726 | { | |
727 | register char *p=pat; | |
728 | ||
729 | do { | |
730 | if(*str=='\'') { /* Skip over single-quote delimited substrings */ | |
731 | while(*++str && (*str!='\'')) | |
732 | ; | |
733 | continue; | |
734 | } | |
735 | if(*str==*p) { | |
736 | register char *s; | |
737 | s=str; | |
738 | while(*++p && (*++s==*p)) | |
739 | ; | |
740 | if(*p) p=pat; /* failed */ | |
741 | } | |
742 | } while(*p && *++str); | |
743 | ||
744 | if(!*str) str=NULL; | |
745 | return(str); | |
746 | } | |
747 | ||
748 | void optimize_sql_stmt(buf) | |
749 | char *buf; | |
750 | { | |
751 | char *point=buf, *pat, *eopat, *esc1, *esc2, *csr; | |
752 | ||
753 | for(point=buf; point=sqlstrstr(point,"LIKE"); point++) { | |
754 | /* Now pointing to string "LIKE" */ | |
755 | ||
756 | /* Look at next word */ | |
757 | for(pat=point+4; *pat==' '; pat++) ; | |
758 | ||
759 | /* Is it a single-quote delimited string? */ | |
760 | if(*pat!='\'') continue; | |
761 | ||
762 | /* look for "escape" clause - save escape character */ | |
763 | /* 1. Find end of pattern */ | |
764 | for(eopat=pat+1; 1; eopat++) { | |
765 | if(*eopat=='\'') { | |
766 | if(eopat[1]=='\'') /* single-quote is self-escaping */ | |
767 | eopat++; | |
768 | else | |
769 | break; | |
770 | } | |
771 | } | |
772 | ||
773 | /* 2. Look at next word */ | |
774 | for(esc1=eopat; *++esc1==' ';) ; | |
775 | ||
776 | /* 3. esc1=0 if not "ESCAPE '?'", where the ? may be any character. */ | |
777 | if(strncmp(esc1,"ESCAPE",6)) esc1=NULL; | |
778 | ||
779 | if(esc1) { | |
780 | for(esc2=esc1+6; *esc2==' '; esc2++) ; | |
781 | ||
782 | if(*esc2++!='\'') continue; /* Bad SQL syntax. Skip. */ | |
783 | /* esc2 now points at the escape character itself */ | |
784 | if(esc2[1]!='\'') continue; /* Weird escape string. Skip. */ | |
785 | } else { | |
786 | esc2="\\"; | |
787 | } | |
788 | ||
789 | /* Is pattern free from special characters? */ | |
790 | for(csr=pat; csr<eopat; csr++) | |
791 | if((*csr=='%') || (*csr=='_') || (*csr==*esc2)) break; | |
792 | if(csr!=eopat) continue; /* Uses pattern matching. Skip. */ | |
793 | ||
794 | /* Optimize the query statement */ | |
795 | /* 1. Change "LIKE" to " = " */ | |
796 | memcpy(point," = ",4); | |
797 | ||
798 | /* 2. Change "ESCAPE" to " " */ | |
799 | if(esc1) { | |
800 | memset(esc1,' ',6); | |
801 | /* 3. Change "'*'" to " " */ | |
802 | /* (Changes '''' to " ") */ | |
803 | if(esc2) memset(esc2-1,' ',(*esc2=='\'')?4:3); | |
804 | } | |
805 | } | |
806 | } | |
807 | ||
048b1b94 | 808 | build_sql_stmt(result_buf,cmd,targetlist,argv,qual) |
809 | char *result_buf; | |
810 | char *cmd; | |
811 | char *targetlist; | |
812 | char *argv[]; | |
c9a214e4 | 813 | char *qual; |
048b1b94 | 814 | { |
815 | char fmt_buf[MR_STMTBUF_LEN]; | |
99e09b48 | 816 | register char *res, *fmt; |
817 | ||
818 | if(qual) | |
819 | sprintf(fmt_buf,"%s %s WHERE %s",cmd,targetlist,qual); | |
820 | else | |
821 | sprintf(fmt_buf,"%s %s",cmd,targetlist); | |
822 | ||
823 | for(res=result_buf, fmt=fmt_buf; *fmt; fmt++) { | |
824 | if(*fmt=='%') { | |
825 | if(*++fmt) { | |
826 | switch(*fmt) { | |
827 | case '%': /* %% -> % */ | |
828 | *res++ = *fmt; | |
829 | break; | |
830 | case 's': | |
831 | if(*argv[0]) { | |
832 | *res='\0'; | |
833 | strcat(res,*argv); | |
834 | while(*++res) ; | |
835 | } | |
836 | argv++; | |
837 | break; | |
838 | case 'd': | |
839 | sprintf(res,"%d",*(int *)*argv++); /* print to result buffer */ | |
840 | while(*++res) ; | |
841 | break; | |
842 | default: /* Swallow other %? pairs */ | |
843 | break; | |
844 | } | |
845 | } else break; | |
846 | } else *res++ = *fmt; /* text -> result buffer */ | |
048b1b94 | 847 | } |
848 | *res='\0'; | |
cc0088db | 849 | |
850 | optimize_sql_stmt(result_buf); | |
048b1b94 | 851 | } |
b070f8a1 | 852 | |
853 | do_update(q, argv, qual, action, actarg) | |
854 | register struct query *q; | |
855 | char *argv[]; | |
856 | char *qual; | |
857 | int (*action)(); | |
858 | char *actarg; | |
048b1b94 | 859 | { |
860 | build_sql_stmt(stmt_buf,"UPDATE",q->tlist,argv,qual); | |
c9a214e4 | 861 | EXEC SQL EXECUTE IMMEDIATE :stmt_buf; |
b070f8a1 | 862 | if (mr_errcode) return(mr_errcode); |
863 | return(MR_SUCCESS); | |
048b1b94 | 864 | } |
b070f8a1 | 865 | |
866 | do_append(q, argv, pqual, action, actarg) | |
867 | register struct query *q; | |
868 | char *argv[]; | |
869 | char *pqual; | |
870 | int (*action)(); | |
871 | char *actarg; | |
048b1b94 | 872 | { |
873 | build_sql_stmt(stmt_buf,"INSERT",q->tlist,argv,pqual); | |
c9a214e4 | 874 | EXEC SQL EXECUTE IMMEDIATE :stmt_buf; |
b070f8a1 | 875 | if (mr_errcode) return(mr_errcode); |
876 | return(MR_SUCCESS); | |
048b1b94 | 877 | } |
b070f8a1 | 878 | |
879 | do_delete(q, qual, action, actarg) | |
880 | register struct query *q; | |
881 | char *qual; | |
882 | int (*action)(); | |
883 | char *actarg; | |
048b1b94 | 884 | { |
885 | sprintf(stmt_buf,"DELETE FROM %s WHERE %s",q->rtable,qual); | |
886 | EXEC SQL EXECUTE IMMEDIATE :stmt_buf; | |
b070f8a1 | 887 | if (mr_errcode) return(mr_errcode); |
888 | return(MR_SUCCESS); | |
048b1b94 | 889 | } |
b070f8a1 | 890 | |
891 | ||
892 | /** | |
893 | ** set_next_object_id - set next object id in values table | |
894 | ** | |
895 | ** Inputs: object - object name in values table and in objects | |
896 | ** table - name of table objects are found in | |
1a41acb7 | 897 | ** limit - should the ID be range limited |
b070f8a1 | 898 | ** |
899 | ** - called before an APPEND operation to set the next object id to | |
900 | ** be used for the new record to the next free value | |
901 | ** | |
902 | **/ | |
903 | ||
048b1b94 | 904 | set_next_object_id(object, table_name, limit) |
905 | EXEC SQL BEGIN DECLARE SECTION; | |
1a41acb7 | 906 | char *object; |
048b1b94 | 907 | char *table_name; |
1a41acb7 | 908 | int limit; |
048b1b94 | 909 | EXEC SQL END DECLARE SECTION; |
910 | { | |
911 | EXEC SQL BEGIN DECLARE SECTION; | |
c9a214e4 | 912 | int value; |
048b1b94 | 913 | EXEC SQL END DECLARE SECTION; |
45bf7573 | 914 | int starting_value; |
915 | ||
048b1b94 | 916 | EXEC SQL SELECT value INTO :value FROM numvalues WHERE name = :object; |
917 | if (sqlca.sqlerrd[2] != 1) | |
1a41acb7 | 918 | return(MR_NO_ID); |
919 | ||
45bf7573 | 920 | starting_value=value; |
c9a214e4 | 921 | while (1) { |
45bf7573 | 922 | if (limit && value > MAX_ID_VALUE) |
923 | value = MIN_ID_VALUE; | |
924 | ||
925 | sprintf(stmt_buf,"SELECT %s FROM %s WHERE %s=%d",object,table_name,object,value); | |
926 | EXEC SQL PREPARE stmt INTO :SQLDA USING NAMES FROM :stmt_buf; | |
99e09b48 | 927 | if(sqlca.sqlcode) |
928 | return(MR_INTERNAL); | |
45bf7573 | 929 | EXEC SQL DECLARE csr002 CURSOR FOR stmt; |
c9a214e4 | 930 | EXEC SQL OPEN csr002; |
45bf7573 | 931 | EXEC SQL FETCH csr002 USING DESCRIPTOR :SQLDA; |
932 | if (sqlca.sqlcode < 0) return(mr_errcode); | |
933 | if (sqlca.sqlcode == 100) break; | |
934 | ||
c9a214e4 | 935 | EXEC SQL CLOSE csr002; |
45bf7573 | 936 | value++; |
937 | if (limit && value == starting_value) { | |
938 | com_err(whoami,0,"All id values have been used"); | |
939 | return(MR_NO_ID); | |
940 | } | |
b070f8a1 | 941 | } |
c9a214e4 | 942 | EXEC SQL CLOSE csr002; |
b070f8a1 | 943 | |
944 | if (LOG_RES) | |
c9a214e4 | 945 | com_err(whoami, 0, "setting ID %s to %d", object, value); |
048b1b94 | 946 | EXEC SQL UPDATE numvalues SET value = :value WHERE name = :object; |
b070f8a1 | 947 | return(MR_SUCCESS); |
048b1b94 | 948 | } |
b070f8a1 | 949 | |
950 | ||
951 | /* Turn a kerberos name into the user's ID of the account that principal | |
952 | * owns. Sets the kerberos ID and user ID. | |
953 | */ | |
954 | ||
955 | int set_krb_mapping(name, login, ok, kid, uid) | |
956 | char *name; | |
957 | char *login; | |
958 | int ok; | |
959 | int *kid; | |
960 | int *uid; | |
048b1b94 | 961 | { |
962 | EXEC SQL BEGIN DECLARE SECTION; | |
963 | int u_id, k_id; | |
964 | char *krbname; | |
965 | EXEC SQL END DECLARE SECTION; | |
b070f8a1 | 966 | |
967 | krbname = name; | |
968 | *kid = 0; | |
969 | *uid = 0; | |
970 | ||
fbeb0263 | 971 | EXEC SQL SELECT km.users_id, km.string_id INTO :u_id, :k_id |
972 | FROM krbmap km, strings str | |
973 | WHERE km.string_id = str.string_id AND str.string = :krbname; | |
3e6ff9e4 | 974 | EXEC SQL COMMIT WORK; |
048b1b94 | 975 | |
b070f8a1 | 976 | if (ingres_errno) return(mr_errcode); |
977 | ||
048b1b94 | 978 | if (sqlca.sqlerrd[2] == 1) { /* rowcount */ |
b070f8a1 | 979 | *kid = -k_id; |
980 | *uid = u_id; | |
981 | return(MR_SUCCESS); | |
982 | } | |
983 | ||
984 | if (name_to_id(name, "STRINGS", &k_id) == MR_SUCCESS) | |
985 | *kid = -k_id; | |
986 | ||
048b1b94 | 987 | if (!ok) { |
b070f8a1 | 988 | *uid = *kid; |
989 | return(MR_SUCCESS); | |
990 | } | |
991 | ||
992 | if (name_to_id(login, "USERS", uid) != MR_SUCCESS) | |
993 | *uid = 0; | |
994 | ||
995 | if (*kid == 0) | |
996 | *kid = *uid; | |
997 | if (ingres_errno) return(mr_errcode); | |
998 | return(MR_SUCCESS); | |
048b1b94 | 999 | } |
b070f8a1 | 1000 | |
1001 | ||
1002 | /* For now this just checks the argc's. It should also see that there | |
1003 | * are no duplicate names. | |
1004 | */ | |
1005 | ||
1006 | sanity_check_queries() | |
1007 | { | |
1008 | register int i; | |
1009 | int maxv = 0, maxa = 0; | |
1010 | #ifdef MULTIPROTOCOLS | |
1011 | extern int QueryCount1, QueryCount2; | |
1012 | extern struct query Queries1[], Queries2[]; | |
1013 | #else | |
1014 | extern int QueryCount2; | |
1015 | extern struct query Queries2[]; | |
1016 | #endif MULTIPROTOCOLS | |
1017 | ||
1018 | #define MAX(x,y) ((x) > (y) ? (x) : (y)) | |
1019 | ||
1020 | #ifdef MULTIPROTOCOLS | |
1021 | for (i = 0; i < QueryCount1; i++) { | |
1022 | maxv = MAX(maxv, Queries1[i].vcnt); | |
1023 | maxa = MAX(maxa, Queries1[i].argc); | |
1024 | } | |
1025 | #endif MULTIPROTOCOLS | |
1026 | for (i = 0; i < QueryCount2; i++) { | |
1027 | maxv = MAX(maxv, Queries2[i].vcnt); | |
1028 | maxa = MAX(maxa, Queries2[i].argc); | |
1029 | } | |
1030 | if (MAX(maxv, maxa) > QMAXARGS) { | |
1031 | com_err(whoami, 0, "A query has more args than QMAXARGS"); | |
1032 | exit(1); | |
1033 | } | |
1034 | } | |
048b1b94 | 1035 | |
1036 | /* eof:qrtn.dc */ |