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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 "mr_server.h" |
03c05291 | 19 | #include "query.h" |
048b1b94 | 20 | EXEC SQL INCLUDE sqlca; /* SQL Communications Area */ |
21 | EXEC SQL INCLUDE sqlda; /* SQL Descriptor Area */ | |
22 | #include "qrtn.h" | |
23 | ||
03c05291 | 24 | SQLDA *mr_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 | |
30cf9ed3 | 32 | char *Argv[QMAXARGS]; |
03c05291 | 33 | extern char *table_name[]; |
34 | extern char *sqlbuffer[QMAXARGS]; | |
b070f8a1 | 35 | |
03c05291 | 36 | int dbms_errno = 0; |
b070f8a1 | 37 | int mr_errcode = 0; |
048b1b94 | 38 | EXEC SQL BEGIN DECLARE SECTION; |
39 | int query_timeout = 30; | |
923a939b | 40 | char *database = "moira"; |
048b1b94 | 41 | EXEC SQL END DECLARE SECTION; |
b070f8a1 | 42 | extern char *whoami; |
43 | extern FILE *journal; | |
44 | ||
03c05291 | 45 | int mr_verify_query(client *cl, struct query *q, int argc, char *argv_ro[]); |
46 | int do_retrieve(struct query *q, char *pqual, char *psort, | |
47 | int (*action)(), char *actarg); | |
48 | int do_update(struct query *q, char *argv[], char *qual, | |
49 | int (*action)(), char *actarg); | |
50 | int do_append(struct query *q, char *argv[], char *pqual, | |
51 | int (*action)(), char *actarg); | |
52 | int do_delete(struct query *q, char *qual, | |
53 | int (*action)(), char *actarg); | |
54 | void build_sql_stmt(char *result_buf, char *cmd, char *targetlist, | |
55 | char *argv[], char *qual); | |
56 | char *build_sort(struct validate *v, char *sort); | |
57 | ||
58 | /* from qvalidate.dc */ | |
59 | int validate_fields(struct query *q, char *argv[], struct valobj *vo, int n); | |
60 | int validate_row(struct query *q, char *argv[], struct validate *v); | |
61 | ||
45bf7573 | 62 | |
048b1b94 | 63 | /* |
03c05291 | 64 | * dbmserr: Called when the DBMS indicates an error. |
b070f8a1 | 65 | */ |
66 | ||
03c05291 | 67 | void dbmserr(void) |
b070f8a1 | 68 | { |
45bf7573 | 69 | EXEC SQL BEGIN DECLARE SECTION; |
70 | char err_msg[256]; | |
71 | EXEC SQL END DECLARE SECTION; | |
03c05291 | 72 | int bufsize=256, msglength=0; |
73 | ||
74 | dbms_errno = -sqlca.sqlcode; | |
75 | mr_errcode = MR_DBMS_ERR; | |
76 | com_err(whoami, MR_DBMS_ERR, " code %d\n", dbms_errno); | |
77 | sqlglm(err_msg, &bufsize, &msglength); | |
78 | err_msg[msglength]=0; | |
79 | com_err(whoami, 0, "SQL error text = %s", err_msg); | |
80 | critical_alert("MOIRA", "Moira server encountered DBMS ERROR %d\n%s", | |
81 | dbms_errno, err_msg); | |
b070f8a1 | 82 | } |
83 | ||
45bf7573 | 84 | /* This is declarative, not executed. Applies from here on, in this file. */ |
03c05291 | 85 | EXEC SQL WHENEVER SQLERROR DO dbmserr(); |
048b1b94 | 86 | |
03c05291 | 87 | int mr_open_database(void) |
b070f8a1 | 88 | { |
89 | register int i; | |
03c05291 | 90 | SQLDA *mr_alloc_sqlda(); |
b070f8a1 | 91 | static first_open = 1; |
92 | ||
93 | if (first_open) { | |
94 | first_open = 0; | |
95 | ||
96 | /* initialize local argv */ | |
97 | for (i = 0; i < 16; i++) | |
98 | Argv[i] = malloc(ARGLEN); | |
99 | ||
03c05291 | 100 | mr_sqlda = mr_alloc_sqlda(); |
c9a214e4 | 101 | |
b070f8a1 | 102 | incremental_init(); |
103 | flush_cache(); | |
104 | } | |
105 | ||
03c05291 | 106 | dbms_errno = 0; |
b070f8a1 | 107 | mr_errcode = 0; |
108 | ||
109 | /* open the database */ | |
03c05291 | 110 | EXEC SQL CONNECT :database IDENTIFIED BY :database; |
111 | ||
112 | if(dbms_errno) | |
1741dca0 | 113 | return(mr_errcode); |
114 | ||
03c05291 | 115 | EXEC SQL SELECT data_length INTO :mr_sig_length FROM user_tab_columns WHERE table_name='USERS' and column_name='SIGNATURE'; |
3e6ff9e4 | 116 | EXEC SQL COMMIT WORK; |
03c05291 | 117 | if(dbms_errno) |
1741dca0 | 118 | return(mr_errcode); |
119 | ||
120 | return(MR_SUCCESS); | |
b070f8a1 | 121 | } |
122 | ||
03c05291 | 123 | void mr_close_database(void) |
b070f8a1 | 124 | { |
125 | flush_cache(); | |
03c05291 | 126 | EXEC SQL COMMIT RELEASE; |
b070f8a1 | 127 | } |
128 | ||
03c05291 | 129 | int mr_check_access(cl, name, argc, argv_ro) |
130 | client *cl; | |
131 | char *name, *argv_ro[]; | |
132 | int argc; | |
b070f8a1 | 133 | { |
134 | struct query *q; | |
b070f8a1 | 135 | |
03c05291 | 136 | dbms_errno = 0; |
b070f8a1 | 137 | mr_errcode = 0; |
138 | ||
139 | q = get_query_by_name(name, cl->args->mr_version_no); | |
140 | if (q == (struct query *)0) | |
141 | return(MR_NO_HANDLE); | |
142 | ||
048b1b94 | 143 | return(mr_verify_query(cl, q, argc, argv_ro)); |
b070f8a1 | 144 | } |
145 | ||
03c05291 | 146 | int mr_process_query(cl, name, argc, argv_ro, action, actarg) |
147 | client *cl; | |
148 | char *name, *argv_ro[], *actarg; | |
149 | int argc, (*action)(); | |
b070f8a1 | 150 | { |
151 | register struct query *q; | |
152 | register int status; | |
153 | register struct validate *v; | |
154 | char qual[256]; | |
155 | char sort[32]; | |
156 | char *pqual; | |
157 | char *psort; | |
048b1b94 | 158 | EXEC SQL BEGIN DECLARE SECTION; |
03c05291 | 159 | char *table; |
048b1b94 | 160 | EXEC SQL END DECLARE SECTION; |
b070f8a1 | 161 | struct save_queue *sq; |
b070f8a1 | 162 | |
03c05291 | 163 | dbms_errno = 0; |
b070f8a1 | 164 | mr_errcode = 0; |
165 | ||
166 | /* list queries command */ | |
167 | if (!strcmp(name, "_list_queries")) { | |
168 | list_queries(cl->args->mr_version_no, action, actarg); | |
169 | return(MR_SUCCESS); | |
170 | } | |
171 | ||
172 | /* help query command */ | |
173 | if (!strcmp(name, "_help")) { | |
174 | if (argc < 1) | |
175 | return(MR_ARGS); | |
176 | q = get_query_by_name(argv_ro[0], cl->args->mr_version_no); | |
177 | if (q == (struct query *)0) return(MR_NO_HANDLE); | |
178 | help_query(q, action, actarg); | |
179 | return(MR_SUCCESS); | |
180 | } | |
181 | ||
182 | /* get query structure, return error if named query does not exist */ | |
183 | q = get_query_by_name(name, cl->args->mr_version_no); | |
184 | if (q == (struct query *)0) return(MR_NO_HANDLE); | |
185 | v = q->validate; | |
186 | ||
187 | /* setup argument vector, verify access and arguments */ | |
188 | if ((status = mr_verify_query(cl, q, argc, argv_ro)) != MR_SUCCESS) | |
189 | goto out; | |
190 | ||
191 | /* perform any special query pre-processing */ | |
192 | if (v && v->pre_rtn) { | |
193 | status = (*v->pre_rtn)(q, Argv, cl, 0); | |
194 | if (status != MR_SUCCESS) | |
195 | goto out; | |
196 | } | |
197 | ||
198 | switch (q->type) { | |
199 | case RETRIEVE: | |
200 | /* for queries that do not permit wildcarding, check if row | |
201 | uniquely exists */ | |
202 | if (v && v->field) { | |
048b1b94 | 203 | status = validate_row(q, Argv, v); |
b070f8a1 | 204 | if (status != MR_EXISTS) break; |
205 | } | |
206 | ||
207 | /* build "where" clause if needed */ | |
208 | if (q->qual) { | |
048b1b94 | 209 | build_qual(q->qual, q->argc, Argv, qual); |
b070f8a1 | 210 | pqual = qual; |
211 | } else { | |
212 | pqual = 0; | |
213 | } | |
214 | ||
215 | /* build "sort" clause if needed */ | |
216 | if (v && v->valobj) { | |
217 | psort = build_sort(v, sort); | |
218 | } else { | |
219 | psort = 0; | |
220 | } | |
221 | ||
222 | /* if there is a followup routine, then we must save the results */ | |
223 | /* of the first query for use by the followup routine */ | |
224 | /* if q->rvar = NULL, perform post_rtn only */ | |
225 | if (q->rvar) { | |
226 | if (v && v->post_rtn) { | |
227 | sq = sq_create(); | |
960b073b | 228 | status = do_retrieve(q, pqual, psort, sq_save_args, |
229 | (char *)sq); | |
b070f8a1 | 230 | if (status != MR_SUCCESS) { |
231 | sq_destroy(sq); | |
232 | break; | |
233 | } | |
234 | status = (*v->post_rtn)(q, sq, v, action, actarg, cl); | |
235 | } else { | |
236 | /* normal retrieve */ | |
237 | status = do_retrieve(q, pqual, psort, action, actarg); | |
238 | } | |
239 | if (status != MR_SUCCESS) break; | |
240 | } else { | |
241 | status = (*v->post_rtn)(q, Argv, cl, action, actarg); | |
242 | } | |
243 | ||
244 | break; | |
245 | ||
246 | case UPDATE: | |
247 | /* see if row already exists */ | |
248 | if (v->field) { | |
249 | status = validate_row(q, Argv, v); | |
250 | if (status != MR_EXISTS) break; | |
251 | } | |
252 | ||
253 | /* build "where" clause and perform update */ | |
254 | /* if q->rvar = NULL, perform post_rtn only */ | |
255 | if (q->rvar) { | |
256 | build_qual(q->qual, q->argc, Argv, qual); | |
257 | incremental_before(q->rtable, qual, argv_ro); | |
258 | status = do_update(q, &Argv[q->argc], qual, action, actarg); | |
259 | incremental_after(q->rtable, qual, argv_ro); | |
260 | if (status != MR_SUCCESS) break; | |
261 | flush_name(argv_ro[0], q->rtable); | |
03c05291 | 262 | table = table_name[q->rtable]; |
b070f8a1 | 263 | if (strcmp(q->shortname, "sshi") && strcmp(q->shortname, "ssif")) { |
048b1b94 | 264 | EXEC SQL UPDATE tblstats |
03c05291 | 265 | SET updates = updates + 1, modtime = SYSDATE |
266 | WHERE table_name = :table; | |
b070f8a1 | 267 | } |
268 | } | |
269 | ||
270 | /* execute followup routine (if any) */ | |
271 | if (v->post_rtn) status = (*v->post_rtn)(q, Argv, cl); | |
272 | ||
273 | break; | |
274 | ||
275 | case APPEND: | |
276 | /* see if row already exists */ | |
277 | if (v->field) { | |
278 | status = validate_row(q, Argv, v); | |
279 | if (status != MR_NO_MATCH) break; | |
280 | } | |
281 | ||
b070f8a1 | 282 | /* build "where" clause if needed */ |
283 | if (q->qual) { | |
284 | build_qual(q->qual, q->argc, Argv, qual); | |
285 | pqual = qual; | |
286 | } else { | |
287 | pqual = 0; | |
288 | } | |
289 | ||
290 | /* perform the append */ | |
291 | /* if q->rvar = NULL, perform post_rtn only */ | |
292 | if (q->rvar) { | |
293 | incremental_clear_before(); | |
294 | status = do_append(q, &Argv[q->argc], pqual, action, actarg); | |
295 | if (status != MR_SUCCESS) break; | |
296 | if (v && v->object_id) { | |
1b247a36 | 297 | sprintf(qual, "%s.%s = %s",q->rvar, v->object_id, |
45bf7573 | 298 | Argv[q->argc+q->vcnt]); |
b070f8a1 | 299 | incremental_after(q->rtable, qual, argv_ro); |
300 | } else | |
301 | incremental_after(q->rtable, pqual, argv_ro); | |
302 | ||
03c05291 | 303 | table = table_name[q->rtable]; |
048b1b94 | 304 | EXEC SQL UPDATE tblstats |
03c05291 | 305 | SET appends = appends + 1, modtime = SYSDATE |
306 | WHERE table_name = :table; | |
b070f8a1 | 307 | } |
308 | ||
309 | /* execute followup routine */ | |
310 | if (v->post_rtn) status = (*v->post_rtn)(q, Argv, cl); | |
311 | break; | |
312 | ||
313 | case DELETE: | |
314 | /* see if row already exists */ | |
315 | if (v->field) { | |
316 | status = validate_row(q, Argv, v); | |
317 | if (status != MR_EXISTS) break; | |
318 | } | |
319 | ||
320 | /* build "where" clause and perform delete */ | |
321 | /* if q->rvar = NULL, perform post_rtn only */ | |
322 | if (q->rvar) { | |
323 | build_qual(q->qual, q->argc, Argv, qual); | |
03c05291 | 324 | table = table_name[q->rtable]; |
048b1b94 | 325 | incremental_before(q->rtable, qual, argv_ro); |
b070f8a1 | 326 | status = do_delete(q, qual, action, actarg); |
327 | incremental_clear_after(); | |
328 | if (status != MR_SUCCESS) break; | |
329 | flush_name(argv_ro[0], q->rtable); | |
048b1b94 | 330 | EXEC SQL UPDATE tblstats |
03c05291 | 331 | SET deletes = deletes + 1, modtime = SYSDATE |
332 | WHERE table_name = :table; | |
b070f8a1 | 333 | } |
334 | ||
335 | /* execute followup routine */ | |
336 | if (v->post_rtn) status = (*v->post_rtn)(q, Argv, cl); | |
337 | break; | |
338 | ||
339 | } | |
340 | ||
341 | out: | |
03c05291 | 342 | if (status == MR_SUCCESS && dbms_errno != 0) { |
343 | com_err(whoami, MR_INTERNAL, "Server didn't notice DBMS ERROR %d", | |
344 | dbms_errno); | |
b070f8a1 | 345 | status = mr_errcode; |
346 | } | |
347 | ||
048b1b94 | 348 | if (q->type == RETRIEVE) { |
048b1b94 | 349 | EXEC SQL COMMIT WORK; |
048b1b94 | 350 | } else { |
b070f8a1 | 351 | if (status == MR_SUCCESS) { |
048b1b94 | 352 | EXEC SQL COMMIT WORK; |
b070f8a1 | 353 | if (journal) { |
03c05291 | 354 | char buf[1024]; |
b070f8a1 | 355 | int i; |
356 | extern time_t now; | |
357 | ||
358 | fprintf(journal, "%% %s %s %s", | |
359 | cl->clname, cl->entity, ctime(&now)); | |
360 | fprintf(journal, "%s[%d] ", q->name, cl->args->mr_version_no); | |
361 | for (i = 0; i < argc; i++) { | |
362 | if (i != 0) { | |
363 | putc(' ', journal); | |
364 | } | |
365 | requote(buf, argv_ro[i], sizeof(buf)); | |
366 | fputs(buf, journal); | |
367 | } | |
368 | putc('\n', journal); | |
369 | fflush(journal); | |
370 | } | |
371 | incremental_update(); | |
372 | } else { | |
1a41acb7 | 373 | cache_abort(); |
03c05291 | 374 | EXEC SQL ROLLBACK WORK; |
b070f8a1 | 375 | incremental_flush(); |
376 | } | |
377 | } | |
1a41acb7 | 378 | cache_commit(); /* commit following abort is safe */ |
b070f8a1 | 379 | |
380 | if (status != MR_SUCCESS && log_flags & LOG_RES) | |
381 | com_err(whoami, status, " (Query failed)"); | |
382 | return(status); | |
383 | } | |
384 | ||
03c05291 | 385 | int build_qual(fmt_buf, argc, argv, qual) |
386 | char *fmt_buf, *argv[], *qual; | |
387 | int argc; | |
b070f8a1 | 388 | { |
03c05291 | 389 | char *res, *fmt; |
b070f8a1 | 390 | |
03c05291 | 391 | for(res=qual, fmt=fmt_buf; *fmt; fmt++) { |
392 | if(*fmt=='%') { | |
393 | if(*++fmt) { | |
394 | switch(*fmt) { | |
395 | case '%': /* %% -> % */ | |
396 | *res++ = *fmt; | |
397 | break; | |
398 | case 's': | |
399 | if(*argv[0]) { | |
400 | char *p=*argv; | |
401 | while(*p) { | |
402 | if(*p=='\'') *res++='\''; /* double the ' */ | |
403 | *res++=*p++; | |
404 | } | |
405 | } | |
406 | argv++; | |
407 | break; | |
408 | case 'd': | |
409 | res+=sprintf(res,"%d",*(int *)*argv++); | |
410 | break; | |
411 | default: /* Swallow other %? pairs */ | |
412 | break; | |
413 | } | |
414 | } else break; | |
415 | } else *res++ = *fmt; /* text -> result buffer */ | |
b070f8a1 | 416 | } |
03c05291 | 417 | *res='\0'; |
b070f8a1 | 418 | } |
419 | ||
03c05291 | 420 | char *build_sort(v, sort) |
421 | struct validate *v; | |
422 | char *sort; | |
b070f8a1 | 423 | { |
424 | register struct valobj *vo; | |
425 | register int n; | |
426 | char elem[16]; | |
427 | ||
428 | n = v->objcnt; | |
429 | vo = v->valobj; | |
430 | *sort = 0; | |
431 | ||
432 | while (--n >= 0) { | |
433 | if (vo->type == V_SORT) { | |
048b1b94 | 434 | sprintf(elem, "%d", vo->index + 1); /* Result column number */ |
b070f8a1 | 435 | if (*sort) strcat(sort, ", "); |
436 | strcat(sort, elem); | |
437 | } | |
438 | vo++; | |
439 | } | |
440 | ||
441 | return ((*sort) ? sort : 0); | |
442 | } | |
443 | ||
444 | ||
445 | /* Build arguement vector, verify query and arguments */ | |
446 | ||
f1bc925a | 447 | int privileged; |
448 | ||
03c05291 | 449 | int mr_verify_query(cl, q, argc, argv_ro) |
450 | client *cl; | |
451 | struct query *q; | |
452 | int argc; | |
453 | char *argv_ro[]; | |
b070f8a1 | 454 | { |
455 | register int argreq; | |
456 | register int status; | |
457 | register struct validate *v = q->validate; | |
458 | register int i; | |
99e09b48 | 459 | register char *to,*fr,*stop; |
b070f8a1 | 460 | |
f1bc925a | 461 | privileged = 0; |
462 | ||
b070f8a1 | 463 | /* copy the arguments into a local argv that we can modify */ |
464 | if (argc >= QMAXARGS) | |
465 | return(MR_ARGS); | |
466 | for (i = 0; i < argc; i++) { | |
03c05291 | 467 | for (to=Argv[i], fr=argv_ro[i], stop=to+ARGLEN; (*fr) && (to<stop);) |
468 | *to++ = *fr++; | |
469 | ||
99e09b48 | 470 | if (*fr) |
471 | return(MR_ARG_TOO_LONG); | |
472 | *to='\0'; | |
473 | ||
474 | if (*--to == '\\') | |
b070f8a1 | 475 | return(MR_BAD_CHAR); |
476 | } | |
477 | ||
478 | /* check initial query access */ | |
479 | status = check_query_access(q, Argv, cl); | |
480 | if (status != MR_SUCCESS && status != MR_PERM) | |
481 | return(status); | |
482 | if (status == MR_SUCCESS) | |
483 | privileged++; | |
484 | ||
485 | /* check argument count */ | |
486 | argreq = q->argc; | |
487 | if (q->type == UPDATE || q->type == APPEND) argreq += q->vcnt; | |
488 | if (argc != argreq) return(MR_ARGS); | |
489 | ||
490 | /* validate arguments */ | |
491 | if (v && v->valobj) { | |
492 | status = validate_fields(q, Argv, v->valobj, v->objcnt); | |
493 | if (status != MR_SUCCESS) return(status); | |
494 | } | |
495 | ||
496 | /* perform special query access check */ | |
497 | if (!privileged && v && v->acs_rtn) { | |
498 | status = (*v->acs_rtn)(q, Argv, cl); | |
499 | if (status != MR_SUCCESS && status != MR_PERM) | |
500 | return(status); | |
501 | if (status == MR_SUCCESS) | |
f1bc925a | 502 | return(MR_SUCCESS); |
b070f8a1 | 503 | } |
504 | ||
505 | return(privileged ? MR_SUCCESS : MR_PERM); | |
506 | } | |
507 | ||
508 | ||
509 | /* This routine caches info from the database. Each query acl is stored | |
510 | * in the query structure, and whether that acl contains everybody. | |
511 | */ | |
512 | ||
03c05291 | 513 | int check_query_access(q, argv, cl) |
514 | struct query *q; | |
515 | char *argv[]; | |
516 | client *cl; | |
048b1b94 | 517 | { |
518 | EXEC SQL BEGIN DECLARE SECTION; | |
519 | char *name; | |
520 | int acl_id; | |
048b1b94 | 521 | static int def_uid; |
522 | EXEC SQL END DECLARE SECTION; | |
b070f8a1 | 523 | int client_id; |
524 | char *client_type; | |
525 | ||
526 | /* initialize default uid */ | |
527 | if (def_uid == 0) { | |
048b1b94 | 528 | EXEC SQL SELECT users_id INTO :def_uid FROM users WHERE login='default'; |
b070f8a1 | 529 | } |
530 | ||
531 | /* get query access control list */ | |
532 | if (q->acl != 0) | |
533 | acl_id = q->acl; | |
534 | else { | |
535 | name = q->shortname; | |
048b1b94 | 536 | EXEC SQL SELECT list_id INTO :acl_id FROM capacls WHERE tag = :name; |
03c05291 | 537 | if (sqlca.sqlcode < 0) return(MR_DBMS_ERR); |
538 | if (sqlca.sqlcode == SQL_NO_MATCH) return(MR_PERM); | |
b070f8a1 | 539 | q->acl = acl_id; |
540 | ||
541 | /* check for default access */ | |
048b1b94 | 542 | EXEC SQL SELECT member_id INTO :acl_id FROM imembers |
543 | WHERE list_id = :acl_id AND member_type = 'USER' | |
544 | AND member_id = :def_uid; | |
545 | if (sqlca.sqlerrd[2] == 0) | |
546 | q->everybody = 0; | |
547 | else | |
548 | q->everybody = 1; | |
b070f8a1 | 549 | } |
550 | ||
551 | if (q->everybody) | |
552 | return(MR_SUCCESS); | |
553 | ||
554 | if (get_client(cl, &client_type, &client_id) != MR_SUCCESS) | |
555 | return(MR_PERM); | |
03c05291 | 556 | if (find_member("LIST", acl_id, client_type, client_id)) |
b070f8a1 | 557 | return(MR_SUCCESS); |
558 | else | |
559 | return(MR_PERM); | |
048b1b94 | 560 | } |
b070f8a1 | 561 | |
562 | ||
03c05291 | 563 | int get_client(cl, client_type, client_id) |
564 | client *cl; | |
565 | char **client_type; | |
566 | int *client_id; | |
b070f8a1 | 567 | { |
568 | if (cl->users_id > 0) { | |
569 | *client_id = cl->users_id; | |
570 | *client_type = "USER"; | |
571 | return(MR_SUCCESS); | |
572 | } | |
573 | ||
574 | if (cl->client_id < 0) { | |
575 | *client_id = -cl->users_id; | |
576 | *client_type = "KERBEROS"; | |
577 | return(MR_SUCCESS); | |
578 | } | |
579 | ||
580 | return(MR_PERM); | |
581 | } | |
582 | ||
03c05291 | 583 | int find_member(list_type, list_id, member_type, member_id) |
584 | char *list_type, *member_type; | |
585 | int list_id, member_id; | |
048b1b94 | 586 | { |
587 | EXEC SQL BEGIN DECLARE SECTION; | |
03c05291 | 588 | int flag; |
048b1b94 | 589 | EXEC SQL END DECLARE SECTION; |
b070f8a1 | 590 | |
591 | if (!strcmp(strtrim(list_type), strtrim(member_type)) && | |
592 | list_id == member_id) | |
593 | return(1); | |
594 | ||
595 | /* see if client is a direct member of list */ | |
048b1b94 | 596 | flag = 0; |
597 | EXEC SQL SELECT member_id INTO :flag FROM imembers | |
598 | WHERE list_id = :list_id AND member_type = :member_type | |
599 | AND member_id = :member_id; | |
600 | if(flag!=0) flag=1; /** Not strictly necessary */ | |
601 | if (sqlca.sqlcode == 0) | |
602 | return(flag); | |
603 | return(0); | |
604 | } | |
b070f8a1 | 605 | |
606 | ||
03c05291 | 607 | int do_retrieve(q, pqual, psort, action, actarg) |
608 | struct query *q; | |
609 | char *pqual, *psort, *actarg; | |
610 | int (*action)(); | |
048b1b94 | 611 | { |
03c05291 | 612 | build_sql_stmt(stmt_buf,"SELECT",q->tlist,NULL,pqual); |
613 | if(psort) { | |
614 | strcat(stmt_buf," ORDER BY "); | |
615 | strcat(stmt_buf,psort); | |
b070f8a1 | 616 | } |
617 | ||
960b073b | 618 | return do_for_all_rows(stmt_buf, q->vcnt, action, (int)actarg); |
048b1b94 | 619 | } |
620 | ||
03c05291 | 621 | char *sqlstrstr(str, pat) |
622 | char *str, *pat; | |
cc0088db | 623 | { |
624 | register char *p=pat; | |
625 | ||
626 | do { | |
627 | if(*str=='\'') { /* Skip over single-quote delimited substrings */ | |
628 | while(*++str && (*str!='\'')) | |
629 | ; | |
630 | continue; | |
631 | } | |
632 | if(*str==*p) { | |
633 | register char *s; | |
634 | s=str; | |
635 | while(*++p && (*++s==*p)) | |
636 | ; | |
637 | if(*p) p=pat; /* failed */ | |
638 | } | |
639 | } while(*p && *++str); | |
640 | ||
641 | if(!*str) str=NULL; | |
642 | return(str); | |
643 | } | |
644 | ||
645 | void optimize_sql_stmt(buf) | |
03c05291 | 646 | char *buf; |
cc0088db | 647 | { |
648 | char *point=buf, *pat, *eopat, *esc1, *esc2, *csr; | |
649 | ||
650 | for(point=buf; point=sqlstrstr(point,"LIKE"); point++) { | |
651 | /* Now pointing to string "LIKE" */ | |
652 | ||
653 | /* Look at next word */ | |
654 | for(pat=point+4; *pat==' '; pat++) ; | |
655 | ||
656 | /* Is it a single-quote delimited string? */ | |
657 | if(*pat!='\'') continue; | |
658 | ||
659 | /* look for "escape" clause - save escape character */ | |
660 | /* 1. Find end of pattern */ | |
661 | for(eopat=pat+1; 1; eopat++) { | |
662 | if(*eopat=='\'') { | |
663 | if(eopat[1]=='\'') /* single-quote is self-escaping */ | |
664 | eopat++; | |
665 | else | |
666 | break; | |
667 | } | |
668 | } | |
669 | ||
670 | /* 2. Look at next word */ | |
671 | for(esc1=eopat; *++esc1==' ';) ; | |
672 | ||
673 | /* 3. esc1=0 if not "ESCAPE '?'", where the ? may be any character. */ | |
674 | if(strncmp(esc1,"ESCAPE",6)) esc1=NULL; | |
675 | ||
676 | if(esc1) { | |
677 | for(esc2=esc1+6; *esc2==' '; esc2++) ; | |
678 | ||
679 | if(*esc2++!='\'') continue; /* Bad SQL syntax. Skip. */ | |
680 | /* esc2 now points at the escape character itself */ | |
681 | if(esc2[1]!='\'') continue; /* Weird escape string. Skip. */ | |
682 | } else { | |
683 | esc2="\\"; | |
684 | } | |
685 | ||
686 | /* Is pattern free from special characters? */ | |
687 | for(csr=pat; csr<eopat; csr++) | |
688 | if((*csr=='%') || (*csr=='_') || (*csr==*esc2)) break; | |
689 | if(csr!=eopat) continue; /* Uses pattern matching. Skip. */ | |
690 | ||
691 | /* Optimize the query statement */ | |
692 | /* 1. Change "LIKE" to " = " */ | |
693 | memcpy(point," = ",4); | |
694 | ||
695 | /* 2. Change "ESCAPE" to " " */ | |
696 | if(esc1) { | |
697 | memset(esc1,' ',6); | |
698 | /* 3. Change "'*'" to " " */ | |
699 | /* (Changes '''' to " ") */ | |
700 | if(esc2) memset(esc2-1,' ',(*esc2=='\'')?4:3); | |
701 | } | |
702 | } | |
703 | } | |
704 | ||
03c05291 | 705 | void build_sql_stmt(result_buf, cmd, targetlist, argv, qual) |
706 | char *result_buf, *cmd, *targetlist, *argv[], *qual; | |
048b1b94 | 707 | { |
708 | char fmt_buf[MR_STMTBUF_LEN]; | |
99e09b48 | 709 | register char *res, *fmt; |
710 | ||
711 | if(qual) | |
712 | sprintf(fmt_buf,"%s %s WHERE %s",cmd,targetlist,qual); | |
713 | else | |
714 | sprintf(fmt_buf,"%s %s",cmd,targetlist); | |
715 | ||
716 | for(res=result_buf, fmt=fmt_buf; *fmt; fmt++) { | |
717 | if(*fmt=='%') { | |
718 | if(*++fmt) { | |
719 | switch(*fmt) { | |
720 | case '%': /* %% -> % */ | |
721 | *res++ = *fmt; | |
722 | break; | |
723 | case 's': | |
724 | if(*argv[0]) { | |
03c05291 | 725 | char *p=*argv; |
726 | while(*p) { | |
727 | if(*p=='\'') *res++='\''; /* double the ' */ | |
728 | *res++=*p++; | |
729 | } | |
99e09b48 | 730 | } |
731 | argv++; | |
732 | break; | |
733 | case 'd': | |
03c05291 | 734 | res+=sprintf(res,"%d",*(int *)*argv++); |
99e09b48 | 735 | break; |
736 | default: /* Swallow other %? pairs */ | |
737 | break; | |
738 | } | |
739 | } else break; | |
740 | } else *res++ = *fmt; /* text -> result buffer */ | |
048b1b94 | 741 | } |
742 | *res='\0'; | |
cc0088db | 743 | |
744 | optimize_sql_stmt(result_buf); | |
048b1b94 | 745 | } |
b070f8a1 | 746 | |
03c05291 | 747 | int do_update(q, argv, qual, action, actarg) |
748 | struct query *q; | |
749 | char *argv[], *qual, *actarg; | |
750 | int (*action)(); | |
048b1b94 | 751 | { |
752 | build_sql_stmt(stmt_buf,"UPDATE",q->tlist,argv,qual); | |
c9a214e4 | 753 | EXEC SQL EXECUTE IMMEDIATE :stmt_buf; |
b070f8a1 | 754 | if (mr_errcode) return(mr_errcode); |
755 | return(MR_SUCCESS); | |
048b1b94 | 756 | } |
b070f8a1 | 757 | |
03c05291 | 758 | int do_append(q, argv, pqual, action, actarg) |
759 | struct query *q; | |
760 | char *argv[], *pqual, *actarg; | |
761 | int (*action)(); | |
048b1b94 | 762 | { |
763 | build_sql_stmt(stmt_buf,"INSERT",q->tlist,argv,pqual); | |
c9a214e4 | 764 | EXEC SQL EXECUTE IMMEDIATE :stmt_buf; |
b070f8a1 | 765 | if (mr_errcode) return(mr_errcode); |
766 | return(MR_SUCCESS); | |
048b1b94 | 767 | } |
b070f8a1 | 768 | |
03c05291 | 769 | int do_delete(q, qual, action, actarg) |
770 | struct query *q; | |
771 | char *qual, *actarg; | |
772 | int (*action)(); | |
048b1b94 | 773 | { |
03c05291 | 774 | sprintf(stmt_buf,"DELETE FROM %s WHERE %s",table_name[q->rtable],qual); |
048b1b94 | 775 | EXEC SQL EXECUTE IMMEDIATE :stmt_buf; |
b070f8a1 | 776 | if (mr_errcode) return(mr_errcode); |
777 | return(MR_SUCCESS); | |
048b1b94 | 778 | } |
b070f8a1 | 779 | |
780 | ||
781 | /** | |
782 | ** set_next_object_id - set next object id in values table | |
783 | ** | |
784 | ** Inputs: object - object name in values table and in objects | |
785 | ** table - name of table objects are found in | |
1a41acb7 | 786 | ** limit - should the ID be range limited |
b070f8a1 | 787 | ** |
788 | ** - called before an APPEND operation to set the next object id to | |
789 | ** be used for the new record to the next free value | |
790 | ** | |
791 | **/ | |
792 | ||
03c05291 | 793 | int set_next_object_id(object, table, limit) |
794 | EXEC SQL BEGIN DECLARE SECTION; | |
795 | char *object; | |
796 | EXEC SQL END DECLARE SECTION; | |
797 | enum tables table; | |
798 | int limit; | |
048b1b94 | 799 | { |
800 | EXEC SQL BEGIN DECLARE SECTION; | |
c9a214e4 | 801 | int value; |
048b1b94 | 802 | EXEC SQL END DECLARE SECTION; |
45bf7573 | 803 | int starting_value; |
804 | ||
048b1b94 | 805 | EXEC SQL SELECT value INTO :value FROM numvalues WHERE name = :object; |
806 | if (sqlca.sqlerrd[2] != 1) | |
1a41acb7 | 807 | return(MR_NO_ID); |
808 | ||
45bf7573 | 809 | starting_value=value; |
c9a214e4 | 810 | while (1) { |
45bf7573 | 811 | if (limit && value > MAX_ID_VALUE) |
812 | value = MIN_ID_VALUE; | |
813 | ||
03c05291 | 814 | sprintf(stmt_buf,"SELECT %s FROM %s WHERE %s=%d", |
815 | object,table_name[table],object,value); | |
816 | dosql(sqlbuffer); | |
45bf7573 | 817 | if (sqlca.sqlcode < 0) return(mr_errcode); |
03c05291 | 818 | if (sqlca.sqlcode == SQL_NO_MATCH) break; |
45bf7573 | 819 | |
45bf7573 | 820 | value++; |
821 | if (limit && value == starting_value) { | |
822 | com_err(whoami,0,"All id values have been used"); | |
823 | return(MR_NO_ID); | |
824 | } | |
b070f8a1 | 825 | } |
826 | ||
827 | if (LOG_RES) | |
c9a214e4 | 828 | com_err(whoami, 0, "setting ID %s to %d", object, value); |
048b1b94 | 829 | EXEC SQL UPDATE numvalues SET value = :value WHERE name = :object; |
b070f8a1 | 830 | return(MR_SUCCESS); |
048b1b94 | 831 | } |
b070f8a1 | 832 | |
833 | ||
834 | /* Turn a kerberos name into the user's ID of the account that principal | |
835 | * owns. Sets the kerberos ID and user ID. | |
836 | */ | |
837 | ||
838 | int set_krb_mapping(name, login, ok, kid, uid) | |
03c05291 | 839 | char *name, *login; |
840 | int ok, *kid, *uid; | |
048b1b94 | 841 | { |
842 | EXEC SQL BEGIN DECLARE SECTION; | |
843 | int u_id, k_id; | |
844 | char *krbname; | |
845 | EXEC SQL END DECLARE SECTION; | |
b070f8a1 | 846 | |
847 | krbname = name; | |
848 | *kid = 0; | |
849 | *uid = 0; | |
850 | ||
fbeb0263 | 851 | EXEC SQL SELECT km.users_id, km.string_id INTO :u_id, :k_id |
852 | FROM krbmap km, strings str | |
853 | WHERE km.string_id = str.string_id AND str.string = :krbname; | |
3e6ff9e4 | 854 | EXEC SQL COMMIT WORK; |
048b1b94 | 855 | |
03c05291 | 856 | if (dbms_errno) return(mr_errcode); |
b070f8a1 | 857 | |
048b1b94 | 858 | if (sqlca.sqlerrd[2] == 1) { /* rowcount */ |
b070f8a1 | 859 | *kid = -k_id; |
860 | *uid = u_id; | |
861 | return(MR_SUCCESS); | |
862 | } | |
863 | ||
03c05291 | 864 | if (name_to_id(name, STRINGS_TABLE, &k_id) == MR_SUCCESS) |
b070f8a1 | 865 | *kid = -k_id; |
866 | ||
048b1b94 | 867 | if (!ok) { |
b070f8a1 | 868 | *uid = *kid; |
869 | return(MR_SUCCESS); | |
870 | } | |
871 | ||
03c05291 | 872 | if (name_to_id(login, USERS_TABLE, uid) != MR_SUCCESS) |
b070f8a1 | 873 | *uid = 0; |
874 | ||
875 | if (*kid == 0) | |
876 | *kid = *uid; | |
03c05291 | 877 | if (dbms_errno) return(mr_errcode); |
b070f8a1 | 878 | return(MR_SUCCESS); |
048b1b94 | 879 | } |
b070f8a1 | 880 | |
881 | ||
882 | /* For now this just checks the argc's. It should also see that there | |
883 | * are no duplicate names. | |
884 | */ | |
885 | ||
03c05291 | 886 | void sanity_check_queries(void) |
b070f8a1 | 887 | { |
888 | register int i; | |
889 | int maxv = 0, maxa = 0; | |
b070f8a1 | 890 | extern int QueryCount2; |
891 | extern struct query Queries2[]; | |
b070f8a1 | 892 | |
893 | #define MAX(x,y) ((x) > (y) ? (x) : (y)) | |
894 | ||
b070f8a1 | 895 | for (i = 0; i < QueryCount2; i++) { |
896 | maxv = MAX(maxv, Queries2[i].vcnt); | |
897 | maxa = MAX(maxa, Queries2[i].argc); | |
898 | } | |
899 | if (MAX(maxv, maxa) > QMAXARGS) { | |
900 | com_err(whoami, 0, "A query has more args than QMAXARGS"); | |
901 | exit(1); | |
902 | } | |
903 | } | |
048b1b94 | 904 | |
03c05291 | 905 | |
906 | /* Generically do a SELECT, storing the results in the provided buffers */ | |
907 | ||
908 | void dosql(buffers) | |
909 | char *buffers[]; | |
910 | { | |
911 | int i, errcode=0, errlen; | |
912 | ||
913 | EXEC SQL PREPARE inc_stmt FROM :stmt_buf; | |
914 | if(sqlca.sqlcode) return; | |
915 | EXEC SQL DECLARE inc_crs CURSOR FOR inc_stmt; | |
916 | EXEC SQL OPEN inc_crs; | |
917 | mr_sqlda->N = QMAXARGS; | |
918 | EXEC SQL DESCRIBE SELECT LIST FOR inc_stmt INTO mr_sqlda; | |
919 | mr_sqlda->N = mr_sqlda->F; | |
920 | for(i=0; i<mr_sqlda->N; i++) { | |
921 | mr_sqlda->V[i]=buffers[i]; | |
922 | mr_sqlda->T[i]=97; | |
923 | mr_sqlda->L[i]=ARGLEN; | |
924 | } | |
925 | EXEC SQL FETCH inc_crs USING DESCRIPTOR mr_sqlda; | |
926 | ||
927 | /* if we got an error from the FETCH, we have to preserve it or the | |
928 | close will reset it and the caller will think nothing happened */ | |
929 | if(sqlca.sqlcode) { | |
930 | errcode=sqlca.sqlcode; | |
931 | errlen=sqlca.sqlerrm.sqlerrml; | |
932 | } | |
933 | ||
934 | EXEC SQL CLOSE inc_crs; | |
935 | if(errcode) { | |
936 | sqlca.sqlcode=errcode; | |
937 | sqlca.sqlerrm.sqlerrml=errlen; | |
938 | } | |
939 | } | |
940 | ||
941 | int do_for_all_rows(query, count, action, actarg) | |
942 | EXEC SQL BEGIN DECLARE SECTION; | |
943 | char *query; | |
944 | EXEC SQL END DECLARE SECTION; | |
945 | int count, (*action)(), actarg; | |
946 | { | |
947 | int i, rowcount=0; | |
948 | ||
949 | EXEC SQL PREPARE stmt FROM :query; | |
950 | if(sqlca.sqlcode) return; | |
951 | EXEC SQL DECLARE curs CURSOR FOR stmt; | |
952 | EXEC SQL OPEN curs; | |
953 | mr_sqlda->N = count; | |
954 | EXEC SQL DESCRIBE SELECT LIST FOR stmt INTO mr_sqlda; | |
955 | mr_sqlda->N = mr_sqlda->F; | |
956 | for(i=0; i<mr_sqlda->N; i++) { | |
957 | mr_sqlda->V[i]=sqlbuffer[i]; | |
958 | mr_sqlda->T[i]=97; | |
959 | mr_sqlda->L[i]=ARGLEN; | |
960 | } | |
961 | ||
962 | while(1) { | |
963 | EXEC SQL FETCH curs USING DESCRIPTOR mr_sqlda; | |
964 | if(sqlca.sqlcode != 0) break; | |
965 | (*action)(count, sqlbuffer, actarg); | |
966 | rowcount++; | |
967 | } | |
968 | EXEC SQL CLOSE curs; | |
969 | ||
970 | if (mr_errcode) return(mr_errcode); | |
971 | return ((rowcount == 0) ? MR_NO_MATCH : MR_SUCCESS); | |
972 | } | |
973 | ||
974 | ||
048b1b94 | 975 | /* eof:qrtn.dc */ |