]>
Commit | Line | Data |
---|---|---|
1 | /* $Id$ | |
2 | * | |
3 | * Query-processing routines | |
4 | * | |
5 | * Copyright (C) 1987-1998 by the Massachusetts Institute of Technology | |
6 | * For copying and distribution information, please see the file | |
7 | * <mit-copyright.h>. | |
8 | * | |
9 | */ | |
10 | ||
11 | #include <mit-copyright.h> | |
12 | #include "mr_server.h" | |
13 | #include "qrtn.h" | |
14 | #include "query.h" | |
15 | ||
16 | #include <stdio.h> | |
17 | #include <stdlib.h> | |
18 | #include <string.h> | |
19 | ||
20 | EXEC SQL INCLUDE sqlca; /* SQL Communications Area */ | |
21 | EXEC SQL INCLUDE sqlda; /* SQL Descriptor Area */ | |
22 | ||
23 | RCSID("$Header$"); | |
24 | ||
25 | SQLDA *mr_sqlda; | |
26 | EXEC SQL BEGIN DECLARE SECTION; | |
27 | char stmt_buf[MR_STMTBUF_LEN]; | |
28 | int proxy_acl; | |
29 | EXEC SQL END DECLARE SECTION; | |
30 | ||
31 | char *Argv[QMAXARGS]; | |
32 | extern char *table_name[]; | |
33 | extern char *sqlbuffer[QMAXARGS]; | |
34 | ||
35 | int dbms_errno = 0; | |
36 | int mr_errcode = 0; | |
37 | EXEC SQL BEGIN DECLARE SECTION; | |
38 | int query_timeout = 30; | |
39 | char *database = "moira"; | |
40 | EXEC SQL END DECLARE SECTION; | |
41 | extern char *whoami; | |
42 | extern FILE *journal; | |
43 | extern int QueryCount, max_version; | |
44 | extern struct query Queries[]; | |
45 | ||
46 | /* Put this in a variable so that we can patch it if necessary */ | |
47 | int max_row_count = 8192; | |
48 | ||
49 | int mr_verify_query(client *cl, struct query *q, int argc, char *argv_ro[]); | |
50 | int do_retrieve(struct query *q, char *pqual, | |
51 | int (*action)(int, char *[], void *), void *actarg); | |
52 | int do_update(struct query *q, char *argv[], char *qual, | |
53 | int (*action)(int, char *[], void *), void *actarg); | |
54 | int do_append(struct query *q, char *argv[], char *pqual, | |
55 | int (*action)(int, char *[], void *), void *actarg); | |
56 | int do_delete(struct query *q, char *qual, | |
57 | int (*action)(int, char *[], void *), void *actarg); | |
58 | void build_sql_stmt(char *result_buf, char *cmd, char *targetlist, | |
59 | char *argv[], char *qual); | |
60 | ||
61 | SQLDA *mr_alloc_sqlda(void); | |
62 | void sqlglm(char *, int *, int *); | |
63 | ||
64 | /* | |
65 | * dbmserr: Called when the DBMS indicates an error. | |
66 | */ | |
67 | ||
68 | void dbmserr(void) | |
69 | { | |
70 | EXEC SQL BEGIN DECLARE SECTION; | |
71 | char err_msg[256]; | |
72 | EXEC SQL END DECLARE SECTION; | |
73 | int bufsize = 256, msglength = 0; | |
74 | ||
75 | dbms_errno = -sqlca.sqlcode; | |
76 | mr_errcode = MR_DBMS_ERR; | |
77 | com_err(whoami, MR_DBMS_ERR, " code %d\n", dbms_errno); | |
78 | sqlglm(err_msg, &bufsize, &msglength); | |
79 | err_msg[msglength] = 0; | |
80 | com_err(whoami, 0, "SQL error text = %s", err_msg); | |
81 | critical_alert(whoami, "MOIRA", "Moira server encountered DBMS ERROR %d\n%s", | |
82 | dbms_errno, err_msg); | |
83 | } | |
84 | ||
85 | /* This is declarative, not executed. Applies from here on, in this file. */ | |
86 | EXEC SQL WHENEVER SQLERROR DO dbmserr(); | |
87 | ||
88 | int mr_open_database(void) | |
89 | { | |
90 | int i; | |
91 | static int first_open = 1; | |
92 | ||
93 | if (first_open) | |
94 | { | |
95 | first_open = 0; | |
96 | ||
97 | /* initialize local argv */ | |
98 | for (i = 0; i < QMAXARGS; i++) | |
99 | Argv[i] = xmalloc(MAX_FIELD_WIDTH); | |
100 | ||
101 | mr_sqlda = mr_alloc_sqlda(); | |
102 | ||
103 | incremental_init(); | |
104 | } | |
105 | ||
106 | dbms_errno = 0; | |
107 | mr_errcode = 0; | |
108 | ||
109 | /* open the database */ | |
110 | EXEC SQL CONNECT :database IDENTIFIED BY :database; | |
111 | ||
112 | if (dbms_errno) | |
113 | return mr_errcode; | |
114 | ||
115 | EXEC SQL SELECT list_id INTO :proxy_acl FROM capacls | |
116 | WHERE capability = 'proxy'; | |
117 | if (dbms_errno) | |
118 | return mr_errcode; | |
119 | ||
120 | return MR_SUCCESS; | |
121 | } | |
122 | ||
123 | void mr_close_database(void) | |
124 | { | |
125 | EXEC SQL COMMIT RELEASE; | |
126 | } | |
127 | ||
128 | int mr_check_access(client *cl, char *name, int argc, char *argv_ro[]) | |
129 | { | |
130 | struct query *q; | |
131 | ||
132 | dbms_errno = 0; | |
133 | mr_errcode = 0; | |
134 | ||
135 | q = get_query_by_name(name, cl->version); | |
136 | if (!q) | |
137 | return MR_NO_HANDLE; | |
138 | ||
139 | return mr_verify_query(cl, q, argc, argv_ro); | |
140 | } | |
141 | ||
142 | int mr_process_query(client *cl, char *name, int argc, char *argv_ro[], | |
143 | int (*action)(int, char *[], void *), void *actarg) | |
144 | { | |
145 | struct query *q; | |
146 | int status; | |
147 | struct validate *v; | |
148 | char *qual = NULL; | |
149 | EXEC SQL BEGIN DECLARE SECTION; | |
150 | char *table; | |
151 | EXEC SQL END DECLARE SECTION; | |
152 | struct save_queue *sq; | |
153 | ||
154 | dbms_errno = 0; | |
155 | mr_errcode = 0; | |
156 | ||
157 | /* list queries command */ | |
158 | if (!strcmp(name, "_list_queries")) | |
159 | { | |
160 | list_queries(cl, action, actarg); | |
161 | return MR_SUCCESS; | |
162 | } | |
163 | ||
164 | /* help query command */ | |
165 | if (!strcmp(name, "_help")) | |
166 | { | |
167 | if (argc < 1) | |
168 | return MR_ARGS; | |
169 | q = get_query_by_name(argv_ro[0], cl->version); | |
170 | if (!q) | |
171 | return MR_NO_HANDLE; | |
172 | help_query(q, action, actarg); | |
173 | return MR_SUCCESS; | |
174 | } | |
175 | ||
176 | /* get query structure, return error if named query does not exist */ | |
177 | q = get_query_by_name(name, cl->version); | |
178 | if (!q) | |
179 | return MR_NO_HANDLE; | |
180 | v = q->validate; | |
181 | ||
182 | /* setup argument vector, verify access and arguments */ | |
183 | if ((status = mr_verify_query(cl, q, argc, argv_ro)) != MR_SUCCESS) | |
184 | goto out; | |
185 | ||
186 | /* perform any special query pre-processing */ | |
187 | if (v && v->pre_rtn) | |
188 | { | |
189 | status = (*v->pre_rtn)(q, Argv, cl); | |
190 | if (status != MR_SUCCESS) | |
191 | goto out; | |
192 | } | |
193 | ||
194 | switch (q->type) | |
195 | { | |
196 | case MR_Q_RETRIEVE: | |
197 | /* for queries that do not permit wildcarding, check if row | |
198 | uniquely exists */ | |
199 | if (v && v->field) | |
200 | { | |
201 | status = validate_row(q, Argv, v); | |
202 | if (status != MR_EXISTS) | |
203 | break; | |
204 | } | |
205 | ||
206 | /* build "where" clause if needed */ | |
207 | if (q->qual) | |
208 | qual = build_qual(q->qual, q->argc, Argv); | |
209 | ||
210 | /* if there is a followup routine, then we must save the results */ | |
211 | /* of the first query for use by the followup routine */ | |
212 | /* if q->rvar = NULL, perform post_rtn only */ | |
213 | if (q->rvar) | |
214 | { | |
215 | if (v && v->post_rtn) | |
216 | { | |
217 | sq = sq_create(); | |
218 | status = do_retrieve(q, qual, sq_save_args, sq); | |
219 | if (status != MR_SUCCESS) | |
220 | { | |
221 | char **argv; | |
222 | int i; | |
223 | ||
224 | while (sq_get_data(sq, &argv)) | |
225 | { | |
226 | for (i = 0; i < q->vcnt; i++) | |
227 | free(argv[i]); | |
228 | free(argv); | |
229 | } | |
230 | sq_destroy(sq); | |
231 | break; | |
232 | } | |
233 | status = (*v->post_rtn)(q, sq, v, action, actarg, cl); | |
234 | } | |
235 | else | |
236 | { | |
237 | /* normal retrieve */ | |
238 | status = do_retrieve(q, qual, action, actarg); | |
239 | } | |
240 | if (status != MR_SUCCESS) | |
241 | break; | |
242 | } | |
243 | else | |
244 | status = (*v->post_rtn)(q, Argv, cl, action, actarg); | |
245 | ||
246 | break; | |
247 | ||
248 | case MR_Q_UPDATE: | |
249 | /* see if row already exists */ | |
250 | if (v->field) | |
251 | { | |
252 | status = validate_row(q, Argv, v); | |
253 | if (status != MR_EXISTS) | |
254 | break; | |
255 | } | |
256 | ||
257 | /* build "where" clause and perform update */ | |
258 | /* if q->rvar = NULL, perform post_rtn only */ | |
259 | if (q->rvar) | |
260 | { | |
261 | qual = build_qual(q->qual, q->argc, Argv); | |
262 | incremental_before(q->rtable, qual, argv_ro); | |
263 | status = do_update(q, &Argv[q->argc], qual, action, actarg); | |
264 | incremental_after(q->rtable, qual, argv_ro); | |
265 | if (status != MR_SUCCESS) | |
266 | break; | |
267 | table = table_name[q->rtable]; | |
268 | if (strcmp(q->shortname, "sshi") && strcmp(q->shortname, "ssif")) | |
269 | { | |
270 | EXEC SQL UPDATE tblstats | |
271 | SET updates = updates + 1, modtime = SYSDATE | |
272 | WHERE table_name = :table; | |
273 | } | |
274 | } | |
275 | ||
276 | /* execute followup routine (if any) */ | |
277 | if (v->post_rtn) | |
278 | status = (*v->post_rtn)(q, Argv, cl); | |
279 | ||
280 | break; | |
281 | ||
282 | case MR_Q_APPEND: | |
283 | /* see if row already exists */ | |
284 | if (v->field) | |
285 | { | |
286 | status = validate_row(q, Argv, v); | |
287 | if (status != MR_NO_MATCH) | |
288 | break; | |
289 | } | |
290 | ||
291 | /* build "where" clause if needed */ | |
292 | if (q->qual) | |
293 | qual = build_qual(q->qual, q->argc, Argv); | |
294 | ||
295 | /* perform the append */ | |
296 | /* if q->rvar = NULL, perform post_rtn only */ | |
297 | if (q->rvar) | |
298 | { | |
299 | incremental_clear_before(); | |
300 | status = do_append(q, &Argv[q->argc], qual, action, actarg); | |
301 | if (status != MR_SUCCESS) | |
302 | break; | |
303 | if (v && v->object_id) | |
304 | { | |
305 | qual = realloc(qual, 15 + strlen(q->rvar) + | |
306 | strlen(Argv[q->argc + q->vcnt])); | |
307 | sprintf(qual, "%s.%s = %s", q->rvar, v->object_id, | |
308 | Argv[q->argc + q->vcnt]); | |
309 | incremental_after(q->rtable, qual, argv_ro); | |
310 | } | |
311 | else | |
312 | incremental_after(q->rtable, qual, argv_ro); | |
313 | ||
314 | table = table_name[q->rtable]; | |
315 | EXEC SQL UPDATE tblstats | |
316 | SET appends = appends + 1, modtime = SYSDATE | |
317 | WHERE table_name = :table; | |
318 | } | |
319 | ||
320 | /* execute followup routine */ | |
321 | if (v->post_rtn) | |
322 | status = (*v->post_rtn)(q, Argv, cl); | |
323 | break; | |
324 | ||
325 | case MR_Q_DELETE: | |
326 | /* see if row already exists */ | |
327 | if (v->field) | |
328 | { | |
329 | status = validate_row(q, Argv, v); | |
330 | if (status != MR_EXISTS) | |
331 | break; | |
332 | } | |
333 | ||
334 | /* build "where" clause and perform delete */ | |
335 | /* if q->rvar = NULL, perform post_rtn only */ | |
336 | if (q->rvar) | |
337 | { | |
338 | qual = build_qual(q->qual, q->argc, Argv); | |
339 | table = table_name[q->rtable]; | |
340 | incremental_before(q->rtable, qual, argv_ro); | |
341 | status = do_delete(q, qual, action, actarg); | |
342 | incremental_clear_after(); | |
343 | if (status != MR_SUCCESS) | |
344 | break; | |
345 | EXEC SQL UPDATE tblstats | |
346 | SET deletes = deletes + 1, modtime = SYSDATE | |
347 | WHERE table_name = :table; | |
348 | } | |
349 | ||
350 | /* execute followup routine */ | |
351 | if (v->post_rtn) | |
352 | status = (*v->post_rtn)(q, Argv, cl); | |
353 | break; | |
354 | ||
355 | case MR_Q_SPECIAL: | |
356 | break; | |
357 | } | |
358 | ||
359 | out: | |
360 | free(qual); | |
361 | ||
362 | if (status == MR_SUCCESS && dbms_errno != 0) | |
363 | { | |
364 | com_err(whoami, MR_INTERNAL, "Server didn't notice DBMS ERROR %d", | |
365 | dbms_errno); | |
366 | status = mr_errcode; | |
367 | } | |
368 | ||
369 | if (q->type == MR_Q_RETRIEVE) | |
370 | EXEC SQL COMMIT WORK; | |
371 | else | |
372 | { | |
373 | if (status == MR_SUCCESS) | |
374 | { | |
375 | EXEC SQL COMMIT WORK; | |
376 | if (journal) | |
377 | { | |
378 | char *buf; | |
379 | int i; | |
380 | extern time_t now; | |
381 | ||
382 | fprintf(journal, "%% %s %s %s", | |
383 | cl->clname, cl->entity, ctime(&now)); | |
384 | fprintf(journal, "%s ", q->name); | |
385 | for (i = 0; i < argc; i++) | |
386 | { | |
387 | if (i != 0) | |
388 | putc(' ', journal); | |
389 | buf = requote(argv_ro[i]); | |
390 | fputs(buf, journal); | |
391 | free(buf); | |
392 | } | |
393 | putc('\n', journal); | |
394 | fflush(journal); | |
395 | } | |
396 | incremental_update(); | |
397 | } | |
398 | else | |
399 | { | |
400 | EXEC SQL ROLLBACK WORK; | |
401 | incremental_flush(); | |
402 | } | |
403 | } | |
404 | ||
405 | if (status != MR_SUCCESS) | |
406 | com_err(whoami, status, " (Query failed)"); | |
407 | return status; | |
408 | } | |
409 | ||
410 | char *build_qual(char *fmt_buf, int argc, char *argv[]) | |
411 | { | |
412 | char *res, *result_buf, *fmt, *arg, *like, *p; | |
413 | ||
414 | result_buf = xmalloc(2 * (strlen(fmt_buf) + argc * ARGLEN)); | |
415 | ||
416 | res = result_buf; | |
417 | fmt = fmt_buf; | |
418 | ||
419 | like = strstr(fmt, "LIKE"); | |
420 | arg = strchr(fmt, '%'); | |
421 | ||
422 | /* Look through the format for LIKE expressions and arguments. | |
423 | Substitute in the arguments, simplify the `LIKE's to `='s | |
424 | where possible, and insert ESCAPE clauses where needed */ | |
425 | ||
426 | while (*fmt) | |
427 | { | |
428 | ||
429 | if ((!like && !arg) || argc == 0) | |
430 | { | |
431 | /* only plain text remains */ | |
432 | strcpy(res, fmt); | |
433 | res = strchr(res, '\0'); | |
434 | break; | |
435 | } | |
436 | else if (!like || arg < like) | |
437 | { | |
438 | /* regular arg: copy up to arg, then substitute */ | |
439 | strncpy(res, fmt, arg - fmt); | |
440 | res += arg - fmt; | |
441 | if (*++arg) | |
442 | { | |
443 | switch (*arg++) | |
444 | { | |
445 | case '%': | |
446 | *res++ = '%'; | |
447 | break; | |
448 | ||
449 | case 's': | |
450 | p = *argv; | |
451 | /* copy string, doubling single quotes */ | |
452 | while (*p) | |
453 | { | |
454 | if (*p == '\'') | |
455 | *res++ = '\''; | |
456 | *res++ = *p++; | |
457 | } | |
458 | argv++; | |
459 | break; | |
460 | ||
461 | case 'd': | |
462 | res += sprintf(res, "%d", *(int *)*argv++); | |
463 | break; | |
464 | } | |
465 | } | |
466 | fmt = arg; | |
467 | arg = strchr(fmt, '%'); | |
468 | } else { | |
469 | /* LIKE arg: copy over up to the arg, then copy and convert arg */ | |
470 | int escape = 0, pattern = 0; | |
471 | char *likepos = res + (like - fmt); | |
472 | ||
473 | strncpy(res, fmt, arg - fmt); | |
474 | res += arg - fmt; | |
475 | ||
476 | /* copy arg, converting UNIX globs to `SQL voodoo', and noting | |
477 | if we'll need an ESCAPE clause */ | |
478 | for (p = *argv++; *p; p++) | |
479 | { | |
480 | switch (*p) | |
481 | { | |
482 | case '*': | |
483 | *res++ = '%'; | |
484 | *res++ = '%'; /* need to double for build_sql_stmt */ | |
485 | pattern = 1; | |
486 | break; | |
487 | ||
488 | case '?': | |
489 | *res++ = '_'; | |
490 | pattern = 1; | |
491 | break; | |
492 | ||
493 | case '%': | |
494 | case '_': | |
495 | *res++ = '*'; | |
496 | *res++ = *p; | |
497 | if (*p == '%') | |
498 | *res++ = *p; | |
499 | escape = 1; | |
500 | break; | |
501 | ||
502 | case '\'': | |
503 | *res++ = '\''; | |
504 | /* fall through */ | |
505 | ||
506 | default: | |
507 | *res++ = *p; | |
508 | } | |
509 | } | |
510 | ||
511 | /* if no pattern characters, write over "LIKE" with " = " */ | |
512 | if (!pattern && !escape) | |
513 | memcpy(likepos, " = ", 4); | |
514 | ||
515 | fmt = arg + 2; | |
516 | while (*fmt && *fmt != ' ') | |
517 | *res++ = *fmt++; | |
518 | ||
519 | if (escape) | |
520 | res += sprintf(res, " ESCAPE '*'"); | |
521 | ||
522 | arg = strchr(fmt, '%'); | |
523 | like = strstr(fmt, "LIKE"); | |
524 | } | |
525 | } | |
526 | ||
527 | *res = '\0'; | |
528 | result_buf = realloc(result_buf, strlen(result_buf) + 1); | |
529 | return result_buf; | |
530 | } | |
531 | ||
532 | /* Build arguement vector, verify query and arguments */ | |
533 | ||
534 | int privileged; | |
535 | ||
536 | int mr_verify_query(client *cl, struct query *q, int argc, char *argv_ro[]) | |
537 | { | |
538 | int argreq; | |
539 | int status; | |
540 | struct validate *v = q->validate; | |
541 | int i; | |
542 | char *to, *fr, *stop; | |
543 | ||
544 | privileged = 0; | |
545 | ||
546 | /* check argument count */ | |
547 | argreq = q->argc; | |
548 | if (q->type == MR_Q_UPDATE || q->type == MR_Q_APPEND) | |
549 | argreq += q->vcnt; | |
550 | if (argc != argreq) | |
551 | return MR_ARGS; | |
552 | ||
553 | /* copy the arguments into a local argv that we can modify */ | |
554 | for (i = 0; i < argc; i++) | |
555 | { | |
556 | for (to = Argv[i], fr = argv_ro[i], stop = to + MAX_FIELD_WIDTH; (*fr) && (to < stop);) | |
557 | *to++ = *fr++; | |
558 | ||
559 | if (*fr) | |
560 | return MR_ARG_TOO_LONG; | |
561 | *to = '\0'; | |
562 | } | |
563 | ||
564 | /* Check initial query access. If we're acting as a proxy, only allow | |
565 | * access if the query has "default" as a capacl. | |
566 | */ | |
567 | status = check_query_access(q, Argv, cl); | |
568 | if (status != MR_SUCCESS && status != MR_PERM) | |
569 | return status; | |
570 | if (status == MR_SUCCESS && (!cl->proxy_id || q->everybody)) | |
571 | privileged++; | |
572 | ||
573 | /* validate arguments */ | |
574 | if (v && v->valobj) | |
575 | { | |
576 | status = validate_fields(q, Argv, v->valobj, v->objcnt); | |
577 | if (status != MR_SUCCESS) | |
578 | return status; | |
579 | } | |
580 | ||
581 | /* perform special query access check */ | |
582 | if (!privileged && v && v->acs_rtn) | |
583 | { | |
584 | status = (*v->acs_rtn)(q, Argv, cl); | |
585 | if (status != MR_SUCCESS && status != MR_PERM) | |
586 | return status; | |
587 | if (status == MR_SUCCESS) | |
588 | return MR_SUCCESS; | |
589 | } | |
590 | ||
591 | return privileged ? MR_SUCCESS : MR_PERM; | |
592 | } | |
593 | ||
594 | int check_query_access(struct query *q, char *argv[], client *cl) | |
595 | { | |
596 | EXEC SQL BEGIN DECLARE SECTION; | |
597 | char *name; | |
598 | int acl_id; | |
599 | static int def_uid; | |
600 | EXEC SQL END DECLARE SECTION; | |
601 | ||
602 | /* initialize default uid */ | |
603 | if (def_uid == 0) | |
604 | EXEC SQL SELECT users_id INTO :def_uid FROM users WHERE login = 'default'; | |
605 | ||
606 | name = q->shortname; | |
607 | EXEC SQL SELECT list_id INTO :acl_id FROM capacls WHERE tag = :name; | |
608 | if (sqlca.sqlcode < 0) | |
609 | return MR_DBMS_ERR; | |
610 | if (sqlca.sqlcode == SQL_NO_MATCH) | |
611 | return MR_PERM; | |
612 | q->acl = acl_id; | |
613 | ||
614 | /* check for default access */ | |
615 | EXEC SQL SELECT member_id INTO :acl_id FROM imembers | |
616 | WHERE list_id = :acl_id AND member_type = 'USER' | |
617 | AND member_id = :def_uid; | |
618 | if (sqlca.sqlerrd[2] == 0) | |
619 | q->everybody = 0; | |
620 | else | |
621 | q->everybody = 1; | |
622 | ||
623 | if (q->everybody) | |
624 | return MR_SUCCESS; | |
625 | ||
626 | if (find_member("LIST", acl_id, cl)) | |
627 | return MR_SUCCESS; | |
628 | else | |
629 | return MR_PERM; | |
630 | } | |
631 | ||
632 | int find_member(char *list_type, int list_id, client *cl) | |
633 | { | |
634 | EXEC SQL BEGIN DECLARE SECTION; | |
635 | int flag, users_id, client_id; | |
636 | EXEC SQL END DECLARE SECTION; | |
637 | ||
638 | if (!strcmp(strtrim(list_type), "USER") && list_id == cl->users_id) | |
639 | return 1; | |
640 | ||
641 | if (!strcmp(strtrim(list_type), "KERBEROS") && list_id == -cl->client_id) | |
642 | return 1; | |
643 | ||
644 | if (!strcmp(strtrim(list_type), "LIST")) | |
645 | { | |
646 | /* see if client is a member of list */ | |
647 | flag = 0; | |
648 | users_id = cl->users_id; | |
649 | client_id = -cl->client_id; | |
650 | EXEC SQL SELECT COUNT(member_id) INTO :flag FROM imembers | |
651 | WHERE list_id = :list_id | |
652 | AND ( ( member_type = 'USER' AND member_id = :users_id ) | |
653 | OR (member_type = 'KERBEROS' AND member_id = :client_id ) ); | |
654 | if (sqlca.sqlcode == 0) | |
655 | return flag; | |
656 | } | |
657 | ||
658 | return 0; | |
659 | } | |
660 | ||
661 | ||
662 | int do_retrieve(struct query *q, char *pqual, | |
663 | int (*action)(int, char *[], void *), void *actarg) | |
664 | { | |
665 | build_sql_stmt(stmt_buf, "SELECT", q->tlist, NULL, pqual); | |
666 | if (q->sort) | |
667 | { | |
668 | strcat(stmt_buf, " ORDER BY "); | |
669 | strcat(stmt_buf, q->sort); | |
670 | } | |
671 | ||
672 | return do_for_all_rows(stmt_buf, q->vcnt, action, actarg); | |
673 | } | |
674 | ||
675 | void build_sql_stmt(char *result_buf, char *cmd, char *targetlist, | |
676 | char *argv[], char *qual) | |
677 | { | |
678 | char fmt_buf[MR_STMTBUF_LEN]; | |
679 | char *res, *fmt; | |
680 | ||
681 | if (qual) | |
682 | sprintf(fmt_buf, "%s %s WHERE %s", cmd, targetlist, qual); | |
683 | else | |
684 | sprintf(fmt_buf, "%s %s", cmd, targetlist); | |
685 | ||
686 | for (res = result_buf, fmt = fmt_buf; *fmt; fmt++) | |
687 | { | |
688 | if (*fmt == '%') | |
689 | { | |
690 | if (*++fmt) | |
691 | { | |
692 | switch (*fmt) | |
693 | { | |
694 | case '%': /* %% -> % */ | |
695 | *res++ = *fmt; | |
696 | break; | |
697 | case 's': | |
698 | if (*argv[0]) | |
699 | { | |
700 | char *p = *argv; | |
701 | while (*p) | |
702 | { | |
703 | if (*p == '\'') | |
704 | *res++ = '\''; /* double the ' */ | |
705 | *res++ = *p++; | |
706 | } | |
707 | } | |
708 | argv++; | |
709 | break; | |
710 | case 'd': | |
711 | res += sprintf(res, "%d", *(int *)*argv++); | |
712 | break; | |
713 | default: /* Swallow other %? pairs */ | |
714 | break; | |
715 | } | |
716 | } | |
717 | else | |
718 | break; | |
719 | } | |
720 | else | |
721 | *res++ = *fmt; /* text -> result buffer */ | |
722 | } | |
723 | *res = '\0'; | |
724 | } | |
725 | ||
726 | int do_update(struct query *q, char *argv[], char *qual, | |
727 | int (*action)(int, char *[], void *), void *actarg) | |
728 | { | |
729 | build_sql_stmt(stmt_buf, "UPDATE", q->tlist, argv, qual); | |
730 | EXEC SQL EXECUTE IMMEDIATE :stmt_buf; | |
731 | if (mr_errcode) | |
732 | return mr_errcode; | |
733 | return MR_SUCCESS; | |
734 | } | |
735 | ||
736 | int do_append(struct query *q, char *argv[], char *pqual, | |
737 | int (*action)(int, char *[], void *), void *actarg) | |
738 | { | |
739 | build_sql_stmt(stmt_buf, "INSERT", q->tlist, argv, pqual); | |
740 | EXEC SQL EXECUTE IMMEDIATE :stmt_buf; | |
741 | if (mr_errcode) | |
742 | return mr_errcode; | |
743 | return MR_SUCCESS; | |
744 | } | |
745 | ||
746 | int do_delete(struct query *q, char *qual, | |
747 | int (*action)(int, char *[], void *), void *actarg) | |
748 | { | |
749 | sprintf(stmt_buf, "DELETE FROM %s WHERE %s", table_name[q->rtable], qual); | |
750 | EXEC SQL EXECUTE IMMEDIATE :stmt_buf; | |
751 | if (mr_errcode) | |
752 | return mr_errcode; | |
753 | return MR_SUCCESS; | |
754 | } | |
755 | ||
756 | ||
757 | /** | |
758 | ** set_next_object_id - set next object id in values table | |
759 | ** | |
760 | ** Inputs: object - object name in values table and in objects | |
761 | ** table - name of table objects are found in | |
762 | ** limit - should the ID be range limited | |
763 | ** | |
764 | ** - called before an MR_Q_APPEND operation to set the next object id to | |
765 | ** be used for the new record to the next free value | |
766 | ** | |
767 | **/ | |
768 | ||
769 | int set_next_object_id(char *object, enum tables table, int limit) | |
770 | { | |
771 | EXEC SQL BEGIN DECLARE SECTION; | |
772 | int value; | |
773 | char *obj = object; | |
774 | EXEC SQL END DECLARE SECTION; | |
775 | int starting_value; | |
776 | ||
777 | EXEC SQL SELECT value INTO :value FROM numvalues WHERE name = :obj; | |
778 | if (sqlca.sqlerrd[2] != 1) | |
779 | return MR_NO_ID; | |
780 | ||
781 | starting_value = value; | |
782 | while (1) | |
783 | { | |
784 | #ifdef ULTRIX_ID_HOLE | |
785 | if (limit && value > 31999 && value < 32768) | |
786 | value = 32768; | |
787 | #endif | |
788 | if (limit && value > MAX_ID_VALUE) | |
789 | value = MIN_ID_VALUE; | |
790 | ||
791 | sprintf(stmt_buf, "SELECT %s FROM %s WHERE %s = %d", | |
792 | object, table_name[table], object, value); | |
793 | dosql(sqlbuffer); | |
794 | if (sqlca.sqlcode < 0) | |
795 | return mr_errcode; | |
796 | if (sqlca.sqlcode == SQL_NO_MATCH) | |
797 | break; | |
798 | ||
799 | value++; | |
800 | if (limit && value == starting_value) | |
801 | { | |
802 | com_err(whoami, 0, "All id values have been used"); | |
803 | return MR_NO_ID; | |
804 | } | |
805 | } | |
806 | ||
807 | com_err(whoami, 0, "setting ID %s to %d", object, value); | |
808 | EXEC SQL UPDATE numvalues SET value = :value WHERE name = :obj; | |
809 | return MR_SUCCESS; | |
810 | } | |
811 | ||
812 | ||
813 | /* Turn a kerberos name into the user's ID of the account that principal | |
814 | * owns. Sets the kerberos ID and user ID. | |
815 | */ | |
816 | ||
817 | int set_krb_mapping(char *name, char *login, int ok, int *kid, int *uid) | |
818 | { | |
819 | EXEC SQL BEGIN DECLARE SECTION; | |
820 | int u_id, k_id; | |
821 | char *krbname; | |
822 | EXEC SQL END DECLARE SECTION; | |
823 | ||
824 | krbname = name; | |
825 | *kid = 0; | |
826 | *uid = 0; | |
827 | ||
828 | EXEC SQL SELECT km.users_id, km.string_id INTO :u_id, :k_id | |
829 | FROM krbmap km, strings str | |
830 | WHERE km.string_id = str.string_id AND str.string = :krbname; | |
831 | EXEC SQL COMMIT WORK; | |
832 | ||
833 | if (dbms_errno) | |
834 | return mr_errcode; | |
835 | ||
836 | if (sqlca.sqlerrd[2] == 1) | |
837 | { | |
838 | *kid = -k_id; | |
839 | *uid = u_id; | |
840 | return MR_SUCCESS; | |
841 | } | |
842 | ||
843 | if (name_to_id(name, STRINGS_TABLE, &k_id) == MR_SUCCESS) | |
844 | *kid = -k_id; | |
845 | ||
846 | if (!ok) | |
847 | { | |
848 | *uid = *kid; | |
849 | return MR_SUCCESS; | |
850 | } | |
851 | ||
852 | if (name_to_id(login, USERS_TABLE, uid) != MR_SUCCESS) | |
853 | *uid = 0; | |
854 | ||
855 | if (*kid == 0) | |
856 | *kid = *uid; | |
857 | if (dbms_errno) | |
858 | return mr_errcode; | |
859 | return MR_SUCCESS; | |
860 | } | |
861 | ||
862 | ||
863 | void sanity_check_queries(void) | |
864 | { | |
865 | int i; | |
866 | int maxv = 0, maxa = 0; | |
867 | ||
868 | #define MAX(x, y) ((x) > (y) ? (x) : (y)) | |
869 | ||
870 | for (i = 0; i < QueryCount; i++) | |
871 | { | |
872 | maxv = MAX(maxv, Queries[i].vcnt); | |
873 | maxa = MAX(maxa, Queries[i].argc); | |
874 | max_version = MAX(max_version, Queries[i].version); | |
875 | } | |
876 | if (MAX(maxv, maxa) > QMAXARGS) | |
877 | { | |
878 | com_err(whoami, 0, "A query has more args than QMAXARGS"); | |
879 | exit(1); | |
880 | } | |
881 | } | |
882 | ||
883 | ||
884 | /* Generically do a SELECT, storing the results in the provided buffers */ | |
885 | ||
886 | void dosql(char *buffers[]) | |
887 | { | |
888 | int i, errcode = 0, errlen; | |
889 | ||
890 | EXEC SQL PREPARE inc_stmt FROM :stmt_buf; | |
891 | if (sqlca.sqlcode) | |
892 | return; | |
893 | EXEC SQL DECLARE inc_crs CURSOR FOR inc_stmt; | |
894 | EXEC SQL OPEN inc_crs; | |
895 | mr_sqlda->N = QMAXARGS; | |
896 | EXEC SQL DESCRIBE SELECT LIST FOR inc_stmt INTO mr_sqlda; | |
897 | mr_sqlda->N = mr_sqlda->F; | |
898 | for (i = 0; i < mr_sqlda->N; i++) | |
899 | { | |
900 | mr_sqlda->V[i] = buffers[i]; | |
901 | mr_sqlda->T[i] = 97; | |
902 | mr_sqlda->L[i] = MAX_FIELD_WIDTH; | |
903 | } | |
904 | EXEC SQL FETCH inc_crs USING DESCRIPTOR mr_sqlda; | |
905 | ||
906 | /* if we got an error from the FETCH, we have to preserve it or the | |
907 | close will reset it and the caller will think nothing happened */ | |
908 | if (sqlca.sqlcode) | |
909 | { | |
910 | errcode = sqlca.sqlcode; | |
911 | errlen = sqlca.sqlerrm.sqlerrml; | |
912 | } | |
913 | ||
914 | EXEC SQL CLOSE inc_crs; | |
915 | if (errcode) | |
916 | { | |
917 | sqlca.sqlcode = errcode; | |
918 | sqlca.sqlerrm.sqlerrml = errlen; | |
919 | } | |
920 | } | |
921 | ||
922 | int do_for_all_rows(char *query, int count, | |
923 | int (*action)(int, char *[], void *), void *actarg) | |
924 | { | |
925 | int i, rowcount = 0; | |
926 | EXEC SQL BEGIN DECLARE SECTION; | |
927 | char *q = query; | |
928 | EXEC SQL END DECLARE SECTION; | |
929 | ||
930 | EXEC SQL PREPARE stmt FROM :q; | |
931 | if (sqlca.sqlcode) | |
932 | return MR_INTERNAL; | |
933 | EXEC SQL DECLARE curs CURSOR FOR stmt; | |
934 | EXEC SQL OPEN curs; | |
935 | mr_sqlda->N = count; | |
936 | EXEC SQL DESCRIBE SELECT LIST FOR stmt INTO mr_sqlda; | |
937 | mr_sqlda->N = mr_sqlda->F; | |
938 | for (i = 0; i < mr_sqlda->N; i++) | |
939 | { | |
940 | mr_sqlda->V[i] = sqlbuffer[i]; | |
941 | mr_sqlda->T[i] = 97; | |
942 | mr_sqlda->L[i] = MAX_FIELD_WIDTH; | |
943 | } | |
944 | ||
945 | while (rowcount < max_row_count) | |
946 | { | |
947 | EXEC SQL FETCH curs USING DESCRIPTOR mr_sqlda; | |
948 | if (sqlca.sqlcode) | |
949 | break; | |
950 | (*action)(count, sqlbuffer, actarg); | |
951 | rowcount++; | |
952 | } | |
953 | EXEC SQL CLOSE curs; | |
954 | ||
955 | if (mr_errcode) | |
956 | return mr_errcode; | |
957 | if (rowcount == max_row_count) | |
958 | { | |
959 | critical_alert(whoami, "moirad", "attempted query with too many rows"); | |
960 | return MR_NO_MEM; | |
961 | } | |
962 | else if (rowcount == 0) | |
963 | return MR_NO_MATCH; | |
964 | else | |
965 | return MR_SUCCESS; | |
966 | } | |
967 | ||
968 | /* Do a name to ID translation. Moved from cache.pc because we did away | |
969 | * with the cache, but what this function does is still useful to us. | |
970 | */ | |
971 | ||
972 | int name_to_id(char *name, enum tables type, int *id) | |
973 | { | |
974 | EXEC SQL BEGIN DECLARE SECTION; | |
975 | char *iname; | |
976 | int j; | |
977 | EXEC SQL END DECLARE SECTION; | |
978 | ||
979 | iname = name; | |
980 | ||
981 | switch (type) | |
982 | { | |
983 | case USERS_TABLE: | |
984 | if (strchr(iname, '@') || (strlen(iname) > 8)) | |
985 | { | |
986 | sqlca.sqlcode = SQL_NO_MATCH; | |
987 | break; | |
988 | } | |
989 | EXEC SQL SELECT users_id INTO :j FROM users WHERE login = :iname; | |
990 | break; | |
991 | case LIST_TABLE: | |
992 | EXEC SQL SELECT list_id INTO :j FROM list WHERE name = :iname; | |
993 | break; | |
994 | case MACHINE_TABLE: | |
995 | EXEC SQL SELECT mach_id INTO :j FROM machine WHERE name = UPPER(:iname); | |
996 | break; | |
997 | case SUBNET_TABLE: | |
998 | EXEC SQL SELECT snet_id INTO :j FROM subnet WHERE name = UPPER(:iname); | |
999 | break; | |
1000 | case CLUSTERS_TABLE: | |
1001 | EXEC SQL SELECT clu_id INTO :j FROM clusters WHERE name = :iname; | |
1002 | break; | |
1003 | case FILESYS_TABLE: | |
1004 | EXEC SQL SELECT filsys_id INTO :j FROM filesys WHERE label = :iname; | |
1005 | break; | |
1006 | case STRINGS_TABLE: | |
1007 | if (!iname[0]) /* special-case empty string */ | |
1008 | { | |
1009 | *id = 0; | |
1010 | return MR_SUCCESS; | |
1011 | } | |
1012 | EXEC SQL SELECT string_id INTO :j FROM strings WHERE string = :iname; | |
1013 | break; | |
1014 | case CONTAINERS_TABLE: | |
1015 | EXEC SQL SELECT cnt_id INTO :j FROM containers WHERE LOWER(name) = | |
1016 | LOWER(:iname); | |
1017 | break; | |
1018 | default: | |
1019 | return MR_INTERNAL; | |
1020 | } | |
1021 | if (sqlca.sqlcode == SQL_NO_MATCH) | |
1022 | return MR_NO_MATCH; | |
1023 | if (sqlca.sqlerrd[2] > 1) | |
1024 | return MR_NOT_UNIQUE; | |
1025 | if (sqlca.sqlcode) | |
1026 | return MR_DBMS_ERR; | |
1027 | *id = j; | |
1028 | ||
1029 | return MR_SUCCESS; | |
1030 | } | |
1031 | ||
1032 | /* Perform an ID to name mapping. name should be a pointer to a pointer to | |
1033 | * malloc'ed data. The buffer it refers to will be freed, and a new buffer | |
1034 | * allocated with the answer. | |
1035 | * | |
1036 | * This used to be in cache.pc, but we've removed the cache, and this function | |
1037 | * is still useful to us. | |
1038 | */ | |
1039 | ||
1040 | int id_to_name(int id, enum tables type, char **name) | |
1041 | { | |
1042 | EXEC SQL BEGIN DECLARE SECTION; | |
1043 | char iname[MAX_FIELD_WIDTH]; | |
1044 | int j; | |
1045 | EXEC SQL END DECLARE SECTION; | |
1046 | ||
1047 | j = id; | |
1048 | ||
1049 | switch (type) | |
1050 | { | |
1051 | case USERS_TABLE: | |
1052 | EXEC SQL SELECT login INTO :iname FROM users WHERE users_id = :j; | |
1053 | break; | |
1054 | case LIST_TABLE: | |
1055 | EXEC SQL SELECT name INTO :iname FROM list WHERE list_id = :j; | |
1056 | break; | |
1057 | case MACHINE_TABLE: | |
1058 | EXEC SQL SELECT name INTO :iname FROM machine WHERE mach_id = :j; | |
1059 | break; | |
1060 | case SUBNET_TABLE: | |
1061 | EXEC SQL SELECT name INTO :iname FROM subnet WHERE snet_id = :j; | |
1062 | break; | |
1063 | case CLUSTERS_TABLE: | |
1064 | EXEC SQL SELECT name INTO :iname FROM clusters WHERE clu_id = :j; | |
1065 | break; | |
1066 | case FILESYS_TABLE: | |
1067 | EXEC SQL SELECT label INTO :iname FROM filesys WHERE filsys_id = :j; | |
1068 | break; | |
1069 | case STRINGS_TABLE: | |
1070 | EXEC SQL SELECT string INTO :iname FROM strings WHERE string_id = :j; | |
1071 | break; | |
1072 | case CONTAINERS_TABLE: | |
1073 | EXEC SQL SELECT name INTO :iname FROM containers WHERE cnt_id = :j; | |
1074 | break; | |
1075 | default: | |
1076 | return MR_INTERNAL; | |
1077 | } | |
1078 | if (sqlca.sqlcode == SQL_NO_MATCH) | |
1079 | { | |
1080 | free(*name); | |
1081 | sprintf(iname, "#%d", j); | |
1082 | *name = xstrdup(iname); | |
1083 | return MR_NO_MATCH; | |
1084 | } | |
1085 | if (sqlca.sqlerrd[2] > 1) | |
1086 | return MR_INTERNAL; | |
1087 | if (sqlca.sqlcode) | |
1088 | return MR_DBMS_ERR; | |
1089 | free(*name); | |
1090 | *name = xstrdup(strtrim(iname)); | |
1091 | ||
1092 | return MR_SUCCESS; | |
1093 | } | |
1094 | ||
1095 | /* eof:qrtn.dc */ |