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1 | /* | |
2 | * $Source$ | |
3 | * $Author$ | |
4 | * $Header$ | |
5 | * | |
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 | * | |
10 | */ | |
11 | ||
12 | #ifndef lint | |
13 | static char *rcsid_qrtn_dc = "$Header$"; | |
14 | #endif lint | |
15 | ||
16 | #include <mit-copyright.h> | |
17 | #include "query.h" | |
18 | #include "mr_server.h" | |
19 | EXEC SQL INCLUDE sqlca; /* SQL Communications Area */ | |
20 | EXEC SQL INCLUDE sqlda; /* SQL Descriptor Area */ | |
21 | #include "qrtn.h" | |
22 | ||
23 | MR_SQLDA_T *SQLDA; | |
24 | EXEC SQL BEGIN DECLARE SECTION; | |
25 | int mr_sig_length; | |
26 | int idummy; | |
27 | char cdummy[MR_CDUMMY_LEN]; | |
28 | char stmt_buf[MR_STMTBUF_LEN]; | |
29 | EXEC SQL END DECLARE SECTION; | |
30 | ||
31 | char *Argv[16]; | |
32 | ||
33 | int ingres_errno = 0; | |
34 | int mr_errcode = 0; | |
35 | EXEC SQL BEGIN DECLARE SECTION; | |
36 | int query_timeout = 30; | |
37 | EXEC SQL END DECLARE SECTION; | |
38 | extern char *whoami; | |
39 | extern FILE *journal; | |
40 | ||
41 | /** Maybe this should be replaced by something like tytso's sql_error */ | |
42 | ||
43 | #define INGRES_BAD_DATE1 40206 | |
44 | #define INGRES_BAD_DATE2 40207 | |
45 | #define INGRES_DEADLOCK 49900 | |
46 | ||
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 | ||
52 | /* | |
53 | * ingerr: Called when Ingres indicates an error. | |
54 | */ | |
55 | ||
56 | void ingerr() | |
57 | { | |
58 | EXEC SQL BEGIN DECLARE SECTION; | |
59 | char err_msg[256]; | |
60 | EXEC SQL END DECLARE SECTION; | |
61 | ingres_errno = -sqlca.sqlcode; | |
62 | ||
63 | switch (ingres_errno) { | |
64 | case INGRES_BAD_DATE1: | |
65 | case INGRES_BAD_DATE2: | |
66 | mr_errcode = MR_DATE; | |
67 | break; | |
68 | case INGRES_DEADLOCK: | |
69 | mr_errcode = MR_DEADLOCK; | |
70 | com_err(whoami, 0, "INGRES deadlock detected"); | |
71 | break; | |
72 | /* I just don't know what the equivalent to this is, yet. | |
73 | * case INGRES_TIMEOUT: | |
74 | * mr_errcode = MR_BUSY; | |
75 | * com_err(whoami, 0, "timed out getting lock"); | |
76 | * break; | |
77 | */ | |
78 | case INGRES_NO_CURSOR: | |
79 | mr_errcode = MR_INTERNAL; | |
80 | com_err(whoami, 0, "Cursor not opened"); | |
81 | break; | |
82 | case INGRES_NO_STMT: | |
83 | mr_errcode = MR_INTERNAL; | |
84 | com_err(whoami, 0, "Statement not declared"); | |
85 | break; | |
86 | #if 0 | |
87 | /* Taking these out during development lets default: give me the INGRES text */ | |
88 | case INGRES_BAD_COLUMN: | |
89 | mr_errcode = MR_INTERNAL; | |
90 | com_err(whoami, 0, "Bad column name in query table"); | |
91 | break; | |
92 | case INGRES_ASGN_ERR: | |
93 | mr_errcode = MR_INTERNAL; | |
94 | com_err(whoami, 0, "Error in SQL assignment statement"); | |
95 | break; | |
96 | #endif | |
97 | default: | |
98 | mr_errcode = MR_INGRES_ERR; | |
99 | com_err(whoami, MR_INGRES_ERR, " code %d\n", ingres_errno); | |
100 | EXEC SQL INQUIRE_SQL(:err_msg = errortext); | |
101 | com_err(whoami, 0, "SQL error text = %s", err_msg); | |
102 | critical_alert("MOIRA", "Moira server encountered INGRES ERROR %d", ingres_errno); | |
103 | } | |
104 | } | |
105 | ||
106 | /* This is declarative, not executed. Applies from here on, in this file. */ | |
107 | EXEC SQL WHENEVER SQLERROR CALL ingerr; | |
108 | ||
109 | int mr_open_database() | |
110 | { | |
111 | register int i; | |
112 | char *malloc(); | |
113 | MR_SQLDA_T *mr_alloc_SQLDA(); | |
114 | static first_open = 1; | |
115 | ||
116 | if (first_open) { | |
117 | first_open = 0; | |
118 | ||
119 | /* initialize local argv */ | |
120 | for (i = 0; i < 16; i++) | |
121 | Argv[i] = malloc(ARGLEN); | |
122 | ||
123 | SQLDA = mr_alloc_SQLDA(); | |
124 | ||
125 | incremental_init(); | |
126 | flush_cache(); | |
127 | } | |
128 | ||
129 | ingres_errno = 0; | |
130 | mr_errcode = 0; | |
131 | ||
132 | /* open the database */ | |
133 | #ifsql INGRES | |
134 | EXEC SQL CONNECT moira; | |
135 | if(ingres_errno) | |
136 | return (ingres_errno); | |
137 | EXEC SQL set lockmode session where level = table, timeout = :query_timeout; | |
138 | EXEC SQL set lockmode on capacls where readlock = shared; | |
139 | EXEC SQL set lockmode on alias where readlock = shared; | |
140 | #endsql | |
141 | #ifsql INFORMIX | |
142 | EXEC SQL DATABASE moira | |
143 | #endsql | |
144 | ||
145 | if(ingres_errno) | |
146 | return(mr_errcode); | |
147 | ||
148 | EXEC SQL SELECT SIZE(signature) INTO :mr_sig_length FROM users WHERE users_id=0; /* Harmless on second open */ | |
149 | if(ingres_errno) | |
150 | return(mr_errcode); | |
151 | ||
152 | return(MR_SUCCESS); | |
153 | } | |
154 | ||
155 | int mr_close_database() | |
156 | { | |
157 | flush_cache(); | |
158 | #ifsql INGRES | |
159 | EXEC SQL DISCONNECT; | |
160 | #endsql | |
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 | ||
179 | return(mr_verify_query(cl, q, argc, argv_ro)); | |
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; | |
197 | EXEC SQL BEGIN DECLARE SECTION; | |
198 | char *table_name; | |
199 | EXEC SQL END DECLARE SECTION; | |
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) { | |
246 | status = validate_row(q, Argv, v); | |
247 | if (status != MR_EXISTS) break; | |
248 | } | |
249 | ||
250 | /* build "where" clause if needed */ | |
251 | if (q->qual) { | |
252 | build_qual(q->qual, q->argc, Argv, qual); | |
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); | |
304 | table_name = q->rtable; | |
305 | if (strcmp(q->shortname, "sshi") && strcmp(q->shortname, "ssif")) { | |
306 | EXEC SQL UPDATE tblstats | |
307 | SET updates = updates + 1, modtime = 'now' | |
308 | WHERE table_name = :table_name; | |
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 | ||
324 | #ifdef NEVER | |
325 | /* This is now done by a valobj, which also fetches the id value */ | |
326 | ||
327 | /* increment id number if necessary */ | |
328 | if (v->object_id) { | |
329 | status = set_next_object_id(v->object_id, q->rtable, 0); | |
330 | if (status != MR_SUCCESS) break; | |
331 | } | |
332 | #endif | |
333 | ||
334 | /* build "where" clause if needed */ | |
335 | if (q->qual) { | |
336 | build_qual(q->qual, q->argc, Argv, qual); | |
337 | pqual = qual; | |
338 | } else { | |
339 | pqual = 0; | |
340 | } | |
341 | ||
342 | /* perform the append */ | |
343 | /* if q->rvar = NULL, perform post_rtn only */ | |
344 | if (q->rvar) { | |
345 | incremental_clear_before(); | |
346 | status = do_append(q, &Argv[q->argc], pqual, action, actarg); | |
347 | if (status != MR_SUCCESS) break; | |
348 | if (v && v->object_id) { | |
349 | sprintf(qual, "%s.%s = %s",q->rtable, v->object_id, | |
350 | Argv[q->argc+q->vcnt]); | |
351 | incremental_after(q->rtable, qual, argv_ro); | |
352 | } else | |
353 | incremental_after(q->rtable, pqual, argv_ro); | |
354 | ||
355 | table_name = q->rtable; | |
356 | EXEC SQL UPDATE tblstats | |
357 | SET appends = appends + 1, modtime = 'now' | |
358 | WHERE table_name = :table_name; | |
359 | } | |
360 | ||
361 | /* execute followup routine */ | |
362 | if (v->post_rtn) status = (*v->post_rtn)(q, Argv, cl); | |
363 | break; | |
364 | ||
365 | case DELETE: | |
366 | /* see if row already exists */ | |
367 | if (v->field) { | |
368 | status = validate_row(q, Argv, v); | |
369 | if (status != MR_EXISTS) break; | |
370 | } | |
371 | ||
372 | /* build "where" clause and perform delete */ | |
373 | /* if q->rvar = NULL, perform post_rtn only */ | |
374 | if (q->rvar) { | |
375 | build_qual(q->qual, q->argc, Argv, qual); | |
376 | table_name = q->rtable; | |
377 | incremental_before(q->rtable, qual, argv_ro); | |
378 | status = do_delete(q, qual, action, actarg); | |
379 | incremental_clear_after(); | |
380 | if (status != MR_SUCCESS) break; | |
381 | flush_name(argv_ro[0], q->rtable); | |
382 | EXEC SQL UPDATE tblstats | |
383 | SET deletes = deletes + 1, modtime = 'now' | |
384 | WHERE table_name = :table_name; | |
385 | } | |
386 | ||
387 | /* execute followup routine */ | |
388 | if (v->post_rtn) status = (*v->post_rtn)(q, Argv, cl); | |
389 | break; | |
390 | ||
391 | } | |
392 | ||
393 | out: | |
394 | if (status == MR_SUCCESS && ingres_errno != 0) { | |
395 | com_err(whoami, MR_INTERNAL, "Server didn't notice INGRES ERROR %d", | |
396 | ingres_errno); | |
397 | status = mr_errcode; | |
398 | } | |
399 | ||
400 | if (q->type == RETRIEVE) { | |
401 | EXEC SQL COMMIT WORK; | |
402 | } else { | |
403 | if (status == MR_SUCCESS) { | |
404 | EXEC SQL COMMIT WORK; | |
405 | if (journal) { | |
406 | char buf[1024], *bp; | |
407 | int i; | |
408 | extern time_t now; | |
409 | ||
410 | fprintf(journal, "%% %s %s %s", | |
411 | cl->clname, cl->entity, ctime(&now)); | |
412 | fprintf(journal, "%s[%d] ", q->name, cl->args->mr_version_no); | |
413 | for (i = 0; i < argc; i++) { | |
414 | if (i != 0) { | |
415 | putc(' ', journal); | |
416 | } | |
417 | requote(buf, argv_ro[i], sizeof(buf)); | |
418 | fputs(buf, journal); | |
419 | } | |
420 | putc('\n', journal); | |
421 | fflush(journal); | |
422 | } | |
423 | incremental_update(); | |
424 | } else { | |
425 | cache_abort(); | |
426 | if (ingres_errno != INGRES_DEADLOCK) { | |
427 | EXEC SQL ROLLBACK WORK; | |
428 | } | |
429 | incremental_flush(); | |
430 | } | |
431 | } | |
432 | cache_commit(); /* commit following abort is safe */ | |
433 | ||
434 | if (status != MR_SUCCESS && log_flags & LOG_RES) | |
435 | com_err(whoami, status, " (Query failed)"); | |
436 | return(status); | |
437 | } | |
438 | ||
439 | build_qual(fmt, argc, argv, qual) | |
440 | char *fmt; | |
441 | int argc; | |
442 | char *argv[]; | |
443 | char *qual; | |
444 | { | |
445 | register char *c; | |
446 | register int i; | |
447 | char *args[4]; | |
448 | char *index(); | |
449 | ||
450 | c = fmt; | |
451 | for (i = 0; i < argc; i++) { | |
452 | c = index(c, '%'); | |
453 | if (c++ == (char *)0) return(MR_ARGS); | |
454 | if (*c == 's') | |
455 | args[i] = argv[i]; | |
456 | else if (*c == 'd') | |
457 | *(int *)&args[i] = *(int *)argv[i]; /* sigh */ | |
458 | else | |
459 | return(MR_INGRES_ERR); | |
460 | } | |
461 | if (c = index(c, '%')) { | |
462 | args[i] = args[i - 1]; | |
463 | } | |
464 | ||
465 | switch (argc) { | |
466 | case 0: | |
467 | strcpy(qual, fmt); | |
468 | break; | |
469 | ||
470 | case 1: | |
471 | sprintf(qual, fmt, args[0]); | |
472 | break; | |
473 | ||
474 | case 2: | |
475 | sprintf(qual, fmt, args[0], args[1]); | |
476 | break; | |
477 | ||
478 | case 3: | |
479 | sprintf(qual, fmt, args[0], args[1], args[2]); | |
480 | break; | |
481 | ||
482 | case 4: | |
483 | sprintf(qual, fmt, args[0], args[1], args[2], args[3]); | |
484 | break; | |
485 | ||
486 | default: | |
487 | com_err(whoami, MR_INTERNAL, | |
488 | "Internal arg count error processing query"); | |
489 | return(MR_INTERNAL); | |
490 | } | |
491 | return(MR_SUCCESS); | |
492 | } | |
493 | ||
494 | char * | |
495 | build_sort(v, sort) | |
496 | register struct validate *v; | |
497 | char *sort; | |
498 | { | |
499 | register struct valobj *vo; | |
500 | register int n; | |
501 | char elem[16]; | |
502 | ||
503 | n = v->objcnt; | |
504 | vo = v->valobj; | |
505 | *sort = 0; | |
506 | ||
507 | while (--n >= 0) { | |
508 | if (vo->type == V_SORT) { | |
509 | sprintf(elem, "%d", vo->index + 1); /* Result column number */ | |
510 | if (*sort) strcat(sort, ", "); | |
511 | strcat(sort, elem); | |
512 | } | |
513 | vo++; | |
514 | } | |
515 | ||
516 | return ((*sort) ? sort : 0); | |
517 | } | |
518 | ||
519 | ||
520 | /* Build arguement vector, verify query and arguments */ | |
521 | ||
522 | mr_verify_query(cl, q, argc, argv_ro) | |
523 | client *cl; | |
524 | struct query *q; | |
525 | int argc; | |
526 | char *argv_ro[]; | |
527 | { | |
528 | register int argreq; | |
529 | register int status; | |
530 | register struct validate *v = q->validate; | |
531 | register int i; | |
532 | register int privileged = 0; | |
533 | register char *to,*fr,*stop; | |
534 | ||
535 | /* copy the arguments into a local argv that we can modify */ | |
536 | if (argc >= QMAXARGS) | |
537 | return(MR_ARGS); | |
538 | for (i = 0; i < argc; i++) { | |
539 | /* Single quotes must be doubled for SQL */ | |
540 | for (to=Argv[i], fr=argv_ro[i], stop=to+ARGLEN; (*fr) && (to<stop);) { | |
541 | if(*fr=='\'') | |
542 | *to++ = *fr; | |
543 | *to++ = *fr++; | |
544 | } | |
545 | if (*fr) | |
546 | return(MR_ARG_TOO_LONG); | |
547 | *to='\0'; | |
548 | ||
549 | if (*--to == '\\') | |
550 | return(MR_BAD_CHAR); | |
551 | } | |
552 | ||
553 | /* check initial query access */ | |
554 | status = check_query_access(q, Argv, cl); | |
555 | if (status != MR_SUCCESS && status != MR_PERM) | |
556 | return(status); | |
557 | if (status == MR_SUCCESS) | |
558 | privileged++; | |
559 | ||
560 | /* check argument count */ | |
561 | argreq = q->argc; | |
562 | if (q->type == UPDATE || q->type == APPEND) argreq += q->vcnt; | |
563 | if (argc != argreq) return(MR_ARGS); | |
564 | ||
565 | /* validate arguments */ | |
566 | if (v && v->valobj) { | |
567 | status = validate_fields(q, Argv, v->valobj, v->objcnt); | |
568 | if (status != MR_SUCCESS) return(status); | |
569 | } | |
570 | ||
571 | /* perform special query access check */ | |
572 | if (!privileged && v && v->acs_rtn) { | |
573 | status = (*v->acs_rtn)(q, Argv, cl); | |
574 | if (status != MR_SUCCESS && status != MR_PERM) | |
575 | return(status); | |
576 | if (status == MR_SUCCESS) | |
577 | privileged++; | |
578 | } | |
579 | ||
580 | return(privileged ? MR_SUCCESS : MR_PERM); | |
581 | } | |
582 | ||
583 | ||
584 | /* This routine caches info from the database. Each query acl is stored | |
585 | * in the query structure, and whether that acl contains everybody. | |
586 | */ | |
587 | ||
588 | check_query_access(q, argv, cl) | |
589 | struct query *q; | |
590 | char *argv[]; | |
591 | client *cl; | |
592 | { | |
593 | EXEC SQL BEGIN DECLARE SECTION; | |
594 | char *name; | |
595 | int acl_id; | |
596 | int rowcount; | |
597 | int errorno; | |
598 | static int def_uid; | |
599 | EXEC SQL END DECLARE SECTION; | |
600 | int status; | |
601 | int client_id; | |
602 | char *client_type; | |
603 | ||
604 | /* initialize default uid */ | |
605 | if (def_uid == 0) { | |
606 | EXEC SQL SELECT users_id INTO :def_uid FROM users WHERE login='default'; | |
607 | } | |
608 | ||
609 | /* get query access control list */ | |
610 | if (q->acl != 0) | |
611 | acl_id = q->acl; | |
612 | else { | |
613 | name = q->shortname; | |
614 | EXEC SQL SELECT list_id INTO :acl_id FROM capacls WHERE tag = :name; | |
615 | if (sqlca.sqlcode < 0) return(MR_INGRES_ERR); | |
616 | if (sqlca.sqlcode == 100) return(MR_PERM); | |
617 | q->acl = acl_id; | |
618 | ||
619 | /* check for default access */ | |
620 | EXEC SQL SELECT member_id INTO :acl_id FROM imembers | |
621 | WHERE list_id = :acl_id AND member_type = 'USER' | |
622 | AND member_id = :def_uid; | |
623 | if (sqlca.sqlerrd[2] == 0) | |
624 | q->everybody = 0; | |
625 | else | |
626 | q->everybody = 1; | |
627 | } | |
628 | ||
629 | if (q->everybody) | |
630 | return(MR_SUCCESS); | |
631 | ||
632 | if (get_client(cl, &client_type, &client_id) != MR_SUCCESS) | |
633 | return(MR_PERM); | |
634 | if (find_member("LIST", acl_id, client_type, client_id, 0)) | |
635 | return(MR_SUCCESS); | |
636 | else | |
637 | return(MR_PERM); | |
638 | } | |
639 | ||
640 | ||
641 | get_client(cl, client_type, client_id) | |
642 | client *cl; | |
643 | char **client_type; | |
644 | int *client_id; | |
645 | { | |
646 | if (cl->users_id > 0) { | |
647 | *client_id = cl->users_id; | |
648 | *client_type = "USER"; | |
649 | return(MR_SUCCESS); | |
650 | } | |
651 | ||
652 | if (cl->client_id < 0) { | |
653 | *client_id = -cl->users_id; | |
654 | *client_type = "KERBEROS"; | |
655 | return(MR_SUCCESS); | |
656 | } | |
657 | ||
658 | return(MR_PERM); | |
659 | } | |
660 | ||
661 | find_member(list_type, list_id, member_type, member_id) | |
662 | char *list_type; | |
663 | EXEC SQL BEGIN DECLARE SECTION; | |
664 | int list_id; | |
665 | char *member_type; | |
666 | int member_id; | |
667 | EXEC SQL END DECLARE SECTION; | |
668 | { | |
669 | EXEC SQL BEGIN DECLARE SECTION; | |
670 | int flag, errorno; | |
671 | EXEC SQL END DECLARE SECTION; | |
672 | ||
673 | if (!strcmp(strtrim(list_type), strtrim(member_type)) && | |
674 | list_id == member_id) | |
675 | return(1); | |
676 | ||
677 | /* see if client is a direct member of list */ | |
678 | flag = 0; | |
679 | EXEC SQL SELECT member_id INTO :flag FROM imembers | |
680 | WHERE list_id = :list_id AND member_type = :member_type | |
681 | AND member_id = :member_id; | |
682 | if(flag!=0) flag=1; /** Not strictly necessary */ | |
683 | if (sqlca.sqlcode == 0) | |
684 | return(flag); | |
685 | return(0); | |
686 | } | |
687 | ||
688 | ||
689 | do_retrieve(q, pqual, psort, action, actarg) | |
690 | register struct query *q; | |
691 | EXEC SQL BEGIN DECLARE SECTION; | |
692 | char *pqual; | |
693 | char *psort; | |
694 | EXEC SQL END DECLARE SECTION; | |
695 | int (*action)(); | |
696 | char *actarg; | |
697 | { | |
698 | static char **vaddrs = (char **)NULL; | |
699 | int j, rowcount; | |
700 | ||
701 | if (!vaddrs) { | |
702 | register int i; | |
703 | ||
704 | if ((vaddrs = (char **)malloc(sizeof(char *) * QMAXARGS)) == NULL) { | |
705 | com_err(whoami, MR_NO_MEM, "setting up static argv"); | |
706 | exit(1); | |
707 | } | |
708 | for (i = 0; i < QMAXARGS; i++) { | |
709 | vaddrs[i]=SQLDA->sqlvar[i].sqldata; | |
710 | } | |
711 | } | |
712 | ||
713 | build_sql_stmt(stmt_buf,"SELECT",q->tlist,vaddrs,pqual); | |
714 | if(psort) { strcat(stmt_buf," ORDER BY "); strcat(stmt_buf,psort); } | |
715 | EXEC SQL PREPARE stmt INTO :SQLDA USING NAMES FROM :stmt_buf; | |
716 | if(sqlca.sqlcode) | |
717 | return(MR_INTERNAL); | |
718 | EXEC SQL DECLARE csr001 CURSOR FOR stmt; | |
719 | EXEC SQL OPEN csr001; | |
720 | rowcount = 0; | |
721 | while(1) { | |
722 | EXEC SQL FETCH csr001 USING DESCRIPTOR :SQLDA; | |
723 | if(sqlca.sqlcode != 0) break; | |
724 | (*action)(q->vcnt, vaddrs, actarg); | |
725 | rowcount++; | |
726 | } | |
727 | EXEC SQL CLOSE csr001; | |
728 | ||
729 | if (mr_errcode) return(mr_errcode); | |
730 | return ((rowcount == 0) ? MR_NO_MATCH : MR_SUCCESS); | |
731 | } | |
732 | ||
733 | build_sql_stmt(result_buf,cmd,targetlist,argv,qual) | |
734 | char *result_buf; | |
735 | char *cmd; | |
736 | char *targetlist; | |
737 | char *argv[]; | |
738 | char *qual; | |
739 | { | |
740 | char fmt_buf[MR_STMTBUF_LEN]; | |
741 | register char *res, *fmt; | |
742 | ||
743 | if(qual) | |
744 | sprintf(fmt_buf,"%s %s WHERE %s",cmd,targetlist,qual); | |
745 | else | |
746 | sprintf(fmt_buf,"%s %s",cmd,targetlist); | |
747 | ||
748 | for(res=result_buf, fmt=fmt_buf; *fmt; fmt++) { | |
749 | if(*fmt=='%') { | |
750 | if(*++fmt) { | |
751 | switch(*fmt) { | |
752 | case '%': /* %% -> % */ | |
753 | *res++ = *fmt; | |
754 | break; | |
755 | case 's': | |
756 | if(*argv[0]) { | |
757 | *res='\0'; | |
758 | strcat(res,*argv); | |
759 | while(*++res) ; | |
760 | } | |
761 | argv++; | |
762 | break; | |
763 | case 'd': | |
764 | sprintf(res,"%d",*(int *)*argv++); /* print to result buffer */ | |
765 | while(*++res) ; | |
766 | break; | |
767 | default: /* Swallow other %? pairs */ | |
768 | break; | |
769 | } | |
770 | } else break; | |
771 | } else *res++ = *fmt; /* text -> result buffer */ | |
772 | } | |
773 | *res='\0'; | |
774 | } | |
775 | ||
776 | do_update(q, argv, qual, action, actarg) | |
777 | register struct query *q; | |
778 | char *argv[]; | |
779 | char *qual; | |
780 | int (*action)(); | |
781 | char *actarg; | |
782 | { | |
783 | build_sql_stmt(stmt_buf,"UPDATE",q->tlist,argv,qual); | |
784 | EXEC SQL EXECUTE IMMEDIATE :stmt_buf; | |
785 | if (mr_errcode) return(mr_errcode); | |
786 | return(MR_SUCCESS); | |
787 | } | |
788 | ||
789 | do_append(q, argv, pqual, action, actarg) | |
790 | register struct query *q; | |
791 | char *argv[]; | |
792 | char *pqual; | |
793 | int (*action)(); | |
794 | char *actarg; | |
795 | { | |
796 | build_sql_stmt(stmt_buf,"INSERT",q->tlist,argv,pqual); | |
797 | EXEC SQL EXECUTE IMMEDIATE :stmt_buf; | |
798 | if (mr_errcode) return(mr_errcode); | |
799 | return(MR_SUCCESS); | |
800 | } | |
801 | ||
802 | do_delete(q, qual, action, actarg) | |
803 | register struct query *q; | |
804 | char *qual; | |
805 | int (*action)(); | |
806 | char *actarg; | |
807 | { | |
808 | sprintf(stmt_buf,"DELETE FROM %s WHERE %s",q->rtable,qual); | |
809 | EXEC SQL EXECUTE IMMEDIATE :stmt_buf; | |
810 | if (mr_errcode) return(mr_errcode); | |
811 | return(MR_SUCCESS); | |
812 | } | |
813 | ||
814 | ||
815 | /** | |
816 | ** set_next_object_id - set next object id in values table | |
817 | ** | |
818 | ** Inputs: object - object name in values table and in objects | |
819 | ** table - name of table objects are found in | |
820 | ** limit - should the ID be range limited | |
821 | ** | |
822 | ** - called before an APPEND operation to set the next object id to | |
823 | ** be used for the new record to the next free value | |
824 | ** | |
825 | **/ | |
826 | ||
827 | set_next_object_id(object, table_name, limit) | |
828 | EXEC SQL BEGIN DECLARE SECTION; | |
829 | char *object; | |
830 | char *table_name; | |
831 | int limit; | |
832 | EXEC SQL END DECLARE SECTION; | |
833 | { | |
834 | EXEC SQL BEGIN DECLARE SECTION; | |
835 | int value; | |
836 | EXEC SQL END DECLARE SECTION; | |
837 | int starting_value; | |
838 | ||
839 | EXEC SQL SELECT value INTO :value FROM numvalues WHERE name = :object; | |
840 | if (sqlca.sqlerrd[2] != 1) | |
841 | return(MR_NO_ID); | |
842 | ||
843 | starting_value=value; | |
844 | while (1) { | |
845 | if (limit && value > MAX_ID_VALUE) | |
846 | value = MIN_ID_VALUE; | |
847 | ||
848 | sprintf(stmt_buf,"SELECT %s FROM %s WHERE %s=%d",object,table_name,object,value); | |
849 | EXEC SQL PREPARE stmt INTO :SQLDA USING NAMES FROM :stmt_buf; | |
850 | if(sqlca.sqlcode) | |
851 | return(MR_INTERNAL); | |
852 | EXEC SQL DECLARE csr002 CURSOR FOR stmt; | |
853 | EXEC SQL OPEN csr002; | |
854 | EXEC SQL FETCH csr002 USING DESCRIPTOR :SQLDA; | |
855 | if (sqlca.sqlcode < 0) return(mr_errcode); | |
856 | if (sqlca.sqlcode == 100) break; | |
857 | ||
858 | EXEC SQL CLOSE csr002; | |
859 | value++; | |
860 | if (limit && value == starting_value) { | |
861 | com_err(whoami,0,"All id values have been used"); | |
862 | return(MR_NO_ID); | |
863 | } | |
864 | } | |
865 | EXEC SQL CLOSE csr002; | |
866 | ||
867 | if (LOG_RES) | |
868 | com_err(whoami, 0, "setting ID %s to %d", object, value); | |
869 | EXEC SQL UPDATE numvalues SET value = :value WHERE name = :object; | |
870 | return(MR_SUCCESS); | |
871 | } | |
872 | ||
873 | ||
874 | /* Turn a kerberos name into the user's ID of the account that principal | |
875 | * owns. Sets the kerberos ID and user ID. | |
876 | */ | |
877 | ||
878 | int set_krb_mapping(name, login, ok, kid, uid) | |
879 | char *name; | |
880 | char *login; | |
881 | int ok; | |
882 | int *kid; | |
883 | int *uid; | |
884 | { | |
885 | EXEC SQL BEGIN DECLARE SECTION; | |
886 | int u_id, k_id; | |
887 | char *krbname; | |
888 | EXEC SQL END DECLARE SECTION; | |
889 | ||
890 | krbname = name; | |
891 | *kid = 0; | |
892 | *uid = 0; | |
893 | ||
894 | EXEC SQL SELECT k.users_id, k.string_id INTO :u_id, :k_id | |
895 | FROM krbmap k, strings s | |
896 | WHERE k.string_id = s.string_id AND s.string = :krbname; | |
897 | ||
898 | if (ingres_errno) return(mr_errcode); | |
899 | ||
900 | if (sqlca.sqlerrd[2] == 1) { /* rowcount */ | |
901 | *kid = -k_id; | |
902 | *uid = u_id; | |
903 | return(MR_SUCCESS); | |
904 | } | |
905 | ||
906 | if (name_to_id(name, "STRINGS", &k_id) == MR_SUCCESS) | |
907 | *kid = -k_id; | |
908 | ||
909 | if (!ok) { | |
910 | *uid = *kid; | |
911 | return(MR_SUCCESS); | |
912 | } | |
913 | ||
914 | if (name_to_id(login, "USERS", uid) != MR_SUCCESS) | |
915 | *uid = 0; | |
916 | ||
917 | if (*kid == 0) | |
918 | *kid = *uid; | |
919 | if (ingres_errno) return(mr_errcode); | |
920 | return(MR_SUCCESS); | |
921 | } | |
922 | ||
923 | ||
924 | /* For now this just checks the argc's. It should also see that there | |
925 | * are no duplicate names. | |
926 | */ | |
927 | ||
928 | sanity_check_queries() | |
929 | { | |
930 | register int i; | |
931 | int maxv = 0, maxa = 0; | |
932 | #ifdef MULTIPROTOCOLS | |
933 | extern int QueryCount1, QueryCount2; | |
934 | extern struct query Queries1[], Queries2[]; | |
935 | #else | |
936 | extern int QueryCount2; | |
937 | extern struct query Queries2[]; | |
938 | #endif MULTIPROTOCOLS | |
939 | ||
940 | #define MAX(x,y) ((x) > (y) ? (x) : (y)) | |
941 | ||
942 | #ifdef MULTIPROTOCOLS | |
943 | for (i = 0; i < QueryCount1; i++) { | |
944 | maxv = MAX(maxv, Queries1[i].vcnt); | |
945 | maxa = MAX(maxa, Queries1[i].argc); | |
946 | } | |
947 | #endif MULTIPROTOCOLS | |
948 | for (i = 0; i < QueryCount2; i++) { | |
949 | maxv = MAX(maxv, Queries2[i].vcnt); | |
950 | maxa = MAX(maxa, Queries2[i].argc); | |
951 | } | |
952 | if (MAX(maxv, maxa) > QMAXARGS) { | |
953 | com_err(whoami, 0, "A query has more args than QMAXARGS"); | |
954 | exit(1); | |
955 | } | |
956 | } | |
957 | ||
958 | /* eof:qrtn.dc */ |