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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[]); |
68b5b948 | 46 | int do_retrieve(struct query *q, char *pqual, int (*action)(), char *actarg); |
03c05291 | 47 | int do_update(struct query *q, char *argv[], char *qual, |
48 | int (*action)(), char *actarg); | |
49 | int do_append(struct query *q, char *argv[], char *pqual, | |
50 | int (*action)(), char *actarg); | |
51 | int do_delete(struct query *q, char *qual, | |
52 | int (*action)(), char *actarg); | |
53 | void build_sql_stmt(char *result_buf, char *cmd, char *targetlist, | |
54 | char *argv[], char *qual); | |
03c05291 | 55 | |
56 | /* from qvalidate.dc */ | |
57 | int validate_fields(struct query *q, char *argv[], struct valobj *vo, int n); | |
58 | int validate_row(struct query *q, char *argv[], struct validate *v); | |
59 | ||
45bf7573 | 60 | |
048b1b94 | 61 | /* |
03c05291 | 62 | * dbmserr: Called when the DBMS indicates an error. |
b070f8a1 | 63 | */ |
64 | ||
03c05291 | 65 | void dbmserr(void) |
b070f8a1 | 66 | { |
45bf7573 | 67 | EXEC SQL BEGIN DECLARE SECTION; |
68 | char err_msg[256]; | |
69 | EXEC SQL END DECLARE SECTION; | |
03c05291 | 70 | int bufsize=256, msglength=0; |
71 | ||
72 | dbms_errno = -sqlca.sqlcode; | |
73 | mr_errcode = MR_DBMS_ERR; | |
74 | com_err(whoami, MR_DBMS_ERR, " code %d\n", dbms_errno); | |
75 | sqlglm(err_msg, &bufsize, &msglength); | |
76 | err_msg[msglength]=0; | |
77 | com_err(whoami, 0, "SQL error text = %s", err_msg); | |
78 | critical_alert("MOIRA", "Moira server encountered DBMS ERROR %d\n%s", | |
79 | dbms_errno, err_msg); | |
b070f8a1 | 80 | } |
81 | ||
45bf7573 | 82 | /* This is declarative, not executed. Applies from here on, in this file. */ |
03c05291 | 83 | EXEC SQL WHENEVER SQLERROR DO dbmserr(); |
048b1b94 | 84 | |
03c05291 | 85 | int mr_open_database(void) |
b070f8a1 | 86 | { |
87 | register int i; | |
03c05291 | 88 | SQLDA *mr_alloc_sqlda(); |
b070f8a1 | 89 | static first_open = 1; |
90 | ||
91 | if (first_open) { | |
92 | first_open = 0; | |
93 | ||
94 | /* initialize local argv */ | |
95 | for (i = 0; i < 16; i++) | |
96 | Argv[i] = malloc(ARGLEN); | |
97 | ||
03c05291 | 98 | mr_sqlda = mr_alloc_sqlda(); |
c9a214e4 | 99 | |
b070f8a1 | 100 | incremental_init(); |
101 | flush_cache(); | |
102 | } | |
103 | ||
03c05291 | 104 | dbms_errno = 0; |
b070f8a1 | 105 | mr_errcode = 0; |
106 | ||
107 | /* open the database */ | |
03c05291 | 108 | EXEC SQL CONNECT :database IDENTIFIED BY :database; |
109 | ||
110 | if(dbms_errno) | |
1741dca0 | 111 | return(mr_errcode); |
112 | ||
03c05291 | 113 | EXEC SQL SELECT data_length INTO :mr_sig_length FROM user_tab_columns WHERE table_name='USERS' and column_name='SIGNATURE'; |
3e6ff9e4 | 114 | EXEC SQL COMMIT WORK; |
03c05291 | 115 | if(dbms_errno) |
1741dca0 | 116 | return(mr_errcode); |
117 | ||
118 | return(MR_SUCCESS); | |
b070f8a1 | 119 | } |
120 | ||
03c05291 | 121 | void mr_close_database(void) |
b070f8a1 | 122 | { |
123 | flush_cache(); | |
03c05291 | 124 | EXEC SQL COMMIT RELEASE; |
b070f8a1 | 125 | } |
126 | ||
03c05291 | 127 | int mr_check_access(cl, name, argc, argv_ro) |
128 | client *cl; | |
129 | char *name, *argv_ro[]; | |
130 | int argc; | |
b070f8a1 | 131 | { |
132 | struct query *q; | |
b070f8a1 | 133 | |
03c05291 | 134 | dbms_errno = 0; |
b070f8a1 | 135 | mr_errcode = 0; |
136 | ||
137 | q = get_query_by_name(name, cl->args->mr_version_no); | |
138 | if (q == (struct query *)0) | |
139 | return(MR_NO_HANDLE); | |
140 | ||
048b1b94 | 141 | return(mr_verify_query(cl, q, argc, argv_ro)); |
b070f8a1 | 142 | } |
143 | ||
03c05291 | 144 | int mr_process_query(cl, name, argc, argv_ro, action, actarg) |
145 | client *cl; | |
146 | char *name, *argv_ro[], *actarg; | |
147 | int argc, (*action)(); | |
b070f8a1 | 148 | { |
149 | register struct query *q; | |
150 | register int status; | |
151 | register struct validate *v; | |
152 | char qual[256]; | |
b070f8a1 | 153 | char *pqual; |
048b1b94 | 154 | EXEC SQL BEGIN DECLARE SECTION; |
03c05291 | 155 | char *table; |
048b1b94 | 156 | EXEC SQL END DECLARE SECTION; |
b070f8a1 | 157 | struct save_queue *sq; |
b070f8a1 | 158 | |
03c05291 | 159 | dbms_errno = 0; |
b070f8a1 | 160 | mr_errcode = 0; |
161 | ||
162 | /* list queries command */ | |
163 | if (!strcmp(name, "_list_queries")) { | |
164 | list_queries(cl->args->mr_version_no, action, actarg); | |
165 | return(MR_SUCCESS); | |
166 | } | |
167 | ||
168 | /* help query command */ | |
169 | if (!strcmp(name, "_help")) { | |
170 | if (argc < 1) | |
171 | return(MR_ARGS); | |
172 | q = get_query_by_name(argv_ro[0], cl->args->mr_version_no); | |
173 | if (q == (struct query *)0) return(MR_NO_HANDLE); | |
174 | help_query(q, action, actarg); | |
175 | return(MR_SUCCESS); | |
176 | } | |
177 | ||
178 | /* get query structure, return error if named query does not exist */ | |
179 | q = get_query_by_name(name, cl->args->mr_version_no); | |
180 | if (q == (struct query *)0) return(MR_NO_HANDLE); | |
181 | v = q->validate; | |
182 | ||
183 | /* setup argument vector, verify access and arguments */ | |
184 | if ((status = mr_verify_query(cl, q, argc, argv_ro)) != MR_SUCCESS) | |
185 | goto out; | |
186 | ||
187 | /* perform any special query pre-processing */ | |
188 | if (v && v->pre_rtn) { | |
189 | status = (*v->pre_rtn)(q, Argv, cl, 0); | |
190 | if (status != MR_SUCCESS) | |
191 | goto out; | |
192 | } | |
193 | ||
194 | switch (q->type) { | |
195 | case RETRIEVE: | |
196 | /* for queries that do not permit wildcarding, check if row | |
197 | uniquely exists */ | |
198 | if (v && v->field) { | |
048b1b94 | 199 | status = validate_row(q, Argv, v); |
b070f8a1 | 200 | if (status != MR_EXISTS) break; |
201 | } | |
202 | ||
203 | /* build "where" clause if needed */ | |
204 | if (q->qual) { | |
048b1b94 | 205 | build_qual(q->qual, q->argc, Argv, qual); |
b070f8a1 | 206 | pqual = qual; |
207 | } else { | |
208 | pqual = 0; | |
209 | } | |
210 | ||
b070f8a1 | 211 | /* if there is a followup routine, then we must save the results */ |
212 | /* of the first query for use by the followup routine */ | |
213 | /* if q->rvar = NULL, perform post_rtn only */ | |
214 | if (q->rvar) { | |
215 | if (v && v->post_rtn) { | |
216 | sq = sq_create(); | |
68b5b948 | 217 | status = do_retrieve(q, pqual, sq_save_args, (char *)sq); |
b070f8a1 | 218 | if (status != MR_SUCCESS) { |
219 | sq_destroy(sq); | |
220 | break; | |
221 | } | |
222 | status = (*v->post_rtn)(q, sq, v, action, actarg, cl); | |
223 | } else { | |
224 | /* normal retrieve */ | |
68b5b948 | 225 | status = do_retrieve(q, pqual, action, actarg); |
b070f8a1 | 226 | } |
227 | if (status != MR_SUCCESS) break; | |
228 | } else { | |
229 | status = (*v->post_rtn)(q, Argv, cl, action, actarg); | |
230 | } | |
231 | ||
232 | break; | |
233 | ||
234 | case UPDATE: | |
235 | /* see if row already exists */ | |
236 | if (v->field) { | |
237 | status = validate_row(q, Argv, v); | |
238 | if (status != MR_EXISTS) break; | |
239 | } | |
240 | ||
241 | /* build "where" clause and perform update */ | |
242 | /* if q->rvar = NULL, perform post_rtn only */ | |
243 | if (q->rvar) { | |
244 | build_qual(q->qual, q->argc, Argv, qual); | |
245 | incremental_before(q->rtable, qual, argv_ro); | |
246 | status = do_update(q, &Argv[q->argc], qual, action, actarg); | |
247 | incremental_after(q->rtable, qual, argv_ro); | |
248 | if (status != MR_SUCCESS) break; | |
249 | flush_name(argv_ro[0], q->rtable); | |
03c05291 | 250 | table = table_name[q->rtable]; |
b070f8a1 | 251 | if (strcmp(q->shortname, "sshi") && strcmp(q->shortname, "ssif")) { |
048b1b94 | 252 | EXEC SQL UPDATE tblstats |
03c05291 | 253 | SET updates = updates + 1, modtime = SYSDATE |
254 | WHERE table_name = :table; | |
b070f8a1 | 255 | } |
256 | } | |
257 | ||
258 | /* execute followup routine (if any) */ | |
259 | if (v->post_rtn) status = (*v->post_rtn)(q, Argv, cl); | |
260 | ||
261 | break; | |
262 | ||
263 | case APPEND: | |
264 | /* see if row already exists */ | |
265 | if (v->field) { | |
266 | status = validate_row(q, Argv, v); | |
267 | if (status != MR_NO_MATCH) break; | |
268 | } | |
269 | ||
b070f8a1 | 270 | /* build "where" clause if needed */ |
271 | if (q->qual) { | |
272 | build_qual(q->qual, q->argc, Argv, qual); | |
273 | pqual = qual; | |
274 | } else { | |
275 | pqual = 0; | |
276 | } | |
277 | ||
278 | /* perform the append */ | |
279 | /* if q->rvar = NULL, perform post_rtn only */ | |
280 | if (q->rvar) { | |
281 | incremental_clear_before(); | |
282 | status = do_append(q, &Argv[q->argc], pqual, action, actarg); | |
283 | if (status != MR_SUCCESS) break; | |
284 | if (v && v->object_id) { | |
1b247a36 | 285 | sprintf(qual, "%s.%s = %s",q->rvar, v->object_id, |
45bf7573 | 286 | Argv[q->argc+q->vcnt]); |
b070f8a1 | 287 | incremental_after(q->rtable, qual, argv_ro); |
288 | } else | |
289 | incremental_after(q->rtable, pqual, argv_ro); | |
290 | ||
03c05291 | 291 | table = table_name[q->rtable]; |
048b1b94 | 292 | EXEC SQL UPDATE tblstats |
03c05291 | 293 | SET appends = appends + 1, modtime = SYSDATE |
294 | WHERE table_name = :table; | |
b070f8a1 | 295 | } |
296 | ||
297 | /* execute followup routine */ | |
298 | if (v->post_rtn) status = (*v->post_rtn)(q, Argv, cl); | |
299 | break; | |
300 | ||
301 | case DELETE: | |
302 | /* see if row already exists */ | |
303 | if (v->field) { | |
304 | status = validate_row(q, Argv, v); | |
305 | if (status != MR_EXISTS) break; | |
306 | } | |
307 | ||
308 | /* build "where" clause and perform delete */ | |
309 | /* if q->rvar = NULL, perform post_rtn only */ | |
310 | if (q->rvar) { | |
311 | build_qual(q->qual, q->argc, Argv, qual); | |
03c05291 | 312 | table = table_name[q->rtable]; |
048b1b94 | 313 | incremental_before(q->rtable, qual, argv_ro); |
b070f8a1 | 314 | status = do_delete(q, qual, action, actarg); |
315 | incremental_clear_after(); | |
316 | if (status != MR_SUCCESS) break; | |
317 | flush_name(argv_ro[0], q->rtable); | |
048b1b94 | 318 | EXEC SQL UPDATE tblstats |
03c05291 | 319 | SET deletes = deletes + 1, modtime = SYSDATE |
320 | WHERE table_name = :table; | |
b070f8a1 | 321 | } |
322 | ||
323 | /* execute followup routine */ | |
324 | if (v->post_rtn) status = (*v->post_rtn)(q, Argv, cl); | |
325 | break; | |
326 | ||
327 | } | |
328 | ||
329 | out: | |
03c05291 | 330 | if (status == MR_SUCCESS && dbms_errno != 0) { |
331 | com_err(whoami, MR_INTERNAL, "Server didn't notice DBMS ERROR %d", | |
332 | dbms_errno); | |
b070f8a1 | 333 | status = mr_errcode; |
334 | } | |
335 | ||
048b1b94 | 336 | if (q->type == RETRIEVE) { |
048b1b94 | 337 | EXEC SQL COMMIT WORK; |
048b1b94 | 338 | } else { |
b070f8a1 | 339 | if (status == MR_SUCCESS) { |
048b1b94 | 340 | EXEC SQL COMMIT WORK; |
b070f8a1 | 341 | if (journal) { |
03c05291 | 342 | char buf[1024]; |
b070f8a1 | 343 | int i; |
344 | extern time_t now; | |
345 | ||
346 | fprintf(journal, "%% %s %s %s", | |
347 | cl->clname, cl->entity, ctime(&now)); | |
348 | fprintf(journal, "%s[%d] ", q->name, cl->args->mr_version_no); | |
349 | for (i = 0; i < argc; i++) { | |
350 | if (i != 0) { | |
351 | putc(' ', journal); | |
352 | } | |
353 | requote(buf, argv_ro[i], sizeof(buf)); | |
354 | fputs(buf, journal); | |
355 | } | |
356 | putc('\n', journal); | |
357 | fflush(journal); | |
358 | } | |
359 | incremental_update(); | |
360 | } else { | |
1a41acb7 | 361 | cache_abort(); |
03c05291 | 362 | EXEC SQL ROLLBACK WORK; |
b070f8a1 | 363 | incremental_flush(); |
364 | } | |
365 | } | |
1a41acb7 | 366 | cache_commit(); /* commit following abort is safe */ |
b070f8a1 | 367 | |
368 | if (status != MR_SUCCESS && log_flags & LOG_RES) | |
369 | com_err(whoami, status, " (Query failed)"); | |
370 | return(status); | |
371 | } | |
372 | ||
03c05291 | 373 | int build_qual(fmt_buf, argc, argv, qual) |
374 | char *fmt_buf, *argv[], *qual; | |
375 | int argc; | |
b070f8a1 | 376 | { |
03c05291 | 377 | char *res, *fmt; |
b070f8a1 | 378 | |
03c05291 | 379 | for(res=qual, fmt=fmt_buf; *fmt; fmt++) { |
380 | if(*fmt=='%') { | |
381 | if(*++fmt) { | |
382 | switch(*fmt) { | |
383 | case '%': /* %% -> % */ | |
384 | *res++ = *fmt; | |
385 | break; | |
386 | case 's': | |
387 | if(*argv[0]) { | |
388 | char *p=*argv; | |
389 | while(*p) { | |
390 | if(*p=='\'') *res++='\''; /* double the ' */ | |
391 | *res++=*p++; | |
392 | } | |
393 | } | |
394 | argv++; | |
395 | break; | |
396 | case 'd': | |
397 | res+=sprintf(res,"%d",*(int *)*argv++); | |
398 | break; | |
399 | default: /* Swallow other %? pairs */ | |
400 | break; | |
401 | } | |
402 | } else break; | |
403 | } else *res++ = *fmt; /* text -> result buffer */ | |
b070f8a1 | 404 | } |
03c05291 | 405 | *res='\0'; |
b070f8a1 | 406 | } |
407 | ||
b070f8a1 | 408 | /* Build arguement vector, verify query and arguments */ |
409 | ||
f1bc925a | 410 | int privileged; |
411 | ||
03c05291 | 412 | int mr_verify_query(cl, q, argc, argv_ro) |
413 | client *cl; | |
414 | struct query *q; | |
415 | int argc; | |
416 | char *argv_ro[]; | |
b070f8a1 | 417 | { |
418 | register int argreq; | |
419 | register int status; | |
420 | register struct validate *v = q->validate; | |
421 | register int i; | |
99e09b48 | 422 | register char *to,*fr,*stop; |
b070f8a1 | 423 | |
f1bc925a | 424 | privileged = 0; |
425 | ||
b4530d60 | 426 | /* check argument count */ |
427 | argreq = q->argc; | |
428 | if (q->type == UPDATE || q->type == APPEND) argreq += q->vcnt; | |
429 | if (argc != argreq) return(MR_ARGS); | |
430 | ||
b070f8a1 | 431 | /* copy the arguments into a local argv that we can modify */ |
b070f8a1 | 432 | for (i = 0; i < argc; i++) { |
03c05291 | 433 | for (to=Argv[i], fr=argv_ro[i], stop=to+ARGLEN; (*fr) && (to<stop);) |
434 | *to++ = *fr++; | |
435 | ||
99e09b48 | 436 | if (*fr) |
437 | return(MR_ARG_TOO_LONG); | |
438 | *to='\0'; | |
439 | ||
440 | if (*--to == '\\') | |
b070f8a1 | 441 | return(MR_BAD_CHAR); |
442 | } | |
443 | ||
444 | /* check initial query access */ | |
445 | status = check_query_access(q, Argv, cl); | |
446 | if (status != MR_SUCCESS && status != MR_PERM) | |
447 | return(status); | |
448 | if (status == MR_SUCCESS) | |
449 | privileged++; | |
450 | ||
b070f8a1 | 451 | /* validate arguments */ |
452 | if (v && v->valobj) { | |
453 | status = validate_fields(q, Argv, v->valobj, v->objcnt); | |
454 | if (status != MR_SUCCESS) return(status); | |
455 | } | |
456 | ||
457 | /* perform special query access check */ | |
458 | if (!privileged && v && v->acs_rtn) { | |
459 | status = (*v->acs_rtn)(q, Argv, cl); | |
460 | if (status != MR_SUCCESS && status != MR_PERM) | |
461 | return(status); | |
462 | if (status == MR_SUCCESS) | |
f1bc925a | 463 | return(MR_SUCCESS); |
b070f8a1 | 464 | } |
465 | ||
466 | return(privileged ? MR_SUCCESS : MR_PERM); | |
467 | } | |
468 | ||
469 | ||
470 | /* This routine caches info from the database. Each query acl is stored | |
471 | * in the query structure, and whether that acl contains everybody. | |
472 | */ | |
473 | ||
03c05291 | 474 | int check_query_access(q, argv, cl) |
475 | struct query *q; | |
476 | char *argv[]; | |
477 | client *cl; | |
048b1b94 | 478 | { |
479 | EXEC SQL BEGIN DECLARE SECTION; | |
480 | char *name; | |
481 | int acl_id; | |
048b1b94 | 482 | static int def_uid; |
483 | EXEC SQL END DECLARE SECTION; | |
b070f8a1 | 484 | |
485 | /* initialize default uid */ | |
486 | if (def_uid == 0) { | |
048b1b94 | 487 | EXEC SQL SELECT users_id INTO :def_uid FROM users WHERE login='default'; |
b070f8a1 | 488 | } |
489 | ||
490 | /* get query access control list */ | |
491 | if (q->acl != 0) | |
492 | acl_id = q->acl; | |
493 | else { | |
494 | name = q->shortname; | |
048b1b94 | 495 | EXEC SQL SELECT list_id INTO :acl_id FROM capacls WHERE tag = :name; |
03c05291 | 496 | if (sqlca.sqlcode < 0) return(MR_DBMS_ERR); |
497 | if (sqlca.sqlcode == SQL_NO_MATCH) return(MR_PERM); | |
b070f8a1 | 498 | q->acl = acl_id; |
499 | ||
500 | /* check for default access */ | |
048b1b94 | 501 | EXEC SQL SELECT member_id INTO :acl_id FROM imembers |
502 | WHERE list_id = :acl_id AND member_type = 'USER' | |
503 | AND member_id = :def_uid; | |
504 | if (sqlca.sqlerrd[2] == 0) | |
505 | q->everybody = 0; | |
506 | else | |
507 | q->everybody = 1; | |
b070f8a1 | 508 | } |
509 | ||
510 | if (q->everybody) | |
511 | return(MR_SUCCESS); | |
512 | ||
f3c08a60 | 513 | if (find_member("LIST", acl_id, cl)) |
b070f8a1 | 514 | return(MR_SUCCESS); |
515 | else | |
516 | return(MR_PERM); | |
048b1b94 | 517 | } |
b070f8a1 | 518 | |
519 | ||
f3c08a60 | 520 | int find_member(list_type, list_id, cl) |
521 | char *list_type; | |
522 | int list_id; | |
03c05291 | 523 | client *cl; |
048b1b94 | 524 | { |
525 | EXEC SQL BEGIN DECLARE SECTION; | |
f3c08a60 | 526 | int flag, users_id, client_id; |
048b1b94 | 527 | EXEC SQL END DECLARE SECTION; |
b070f8a1 | 528 | |
f3c08a60 | 529 | if (!strcmp(strtrim(list_type), "USER") && |
530 | list_id == cl->users_id) | |
531 | return(1); | |
532 | ||
533 | if (!strcmp(strtrim(list_type), "KERBEROS") && | |
534 | list_id == -cl->client_id) | |
b070f8a1 | 535 | return(1); |
536 | ||
f3c08a60 | 537 | /* see if client is a member of list */ |
048b1b94 | 538 | flag = 0; |
f3c08a60 | 539 | users_id = cl->users_id; |
540 | client_id = -cl->client_id; | |
2a467737 | 541 | EXEC SQL SELECT COUNT(member_id) INTO :flag FROM imembers |
542 | WHERE list_id = :list_id | |
f3c08a60 | 543 | AND ( ( member_type = 'USER' AND member_id = :users_id ) |
544 | OR (member_type = 'KERBEROS' AND member_id = :client_id ) ); | |
048b1b94 | 545 | if (sqlca.sqlcode == 0) |
546 | return(flag); | |
547 | return(0); | |
548 | } | |
b070f8a1 | 549 | |
550 | ||
68b5b948 | 551 | int do_retrieve(q, pqual, action, actarg) |
03c05291 | 552 | struct query *q; |
68b5b948 | 553 | char *pqual, *actarg; |
03c05291 | 554 | int (*action)(); |
048b1b94 | 555 | { |
03c05291 | 556 | build_sql_stmt(stmt_buf,"SELECT",q->tlist,NULL,pqual); |
68b5b948 | 557 | if(q->sort) { |
03c05291 | 558 | strcat(stmt_buf," ORDER BY "); |
68b5b948 | 559 | strcat(stmt_buf,q->sort); |
b070f8a1 | 560 | } |
561 | ||
960b073b | 562 | return do_for_all_rows(stmt_buf, q->vcnt, action, (int)actarg); |
048b1b94 | 563 | } |
564 | ||
03c05291 | 565 | char *sqlstrstr(str, pat) |
566 | char *str, *pat; | |
cc0088db | 567 | { |
568 | register char *p=pat; | |
569 | ||
570 | do { | |
571 | if(*str=='\'') { /* Skip over single-quote delimited substrings */ | |
572 | while(*++str && (*str!='\'')) | |
573 | ; | |
574 | continue; | |
575 | } | |
576 | if(*str==*p) { | |
577 | register char *s; | |
578 | s=str; | |
579 | while(*++p && (*++s==*p)) | |
580 | ; | |
581 | if(*p) p=pat; /* failed */ | |
582 | } | |
583 | } while(*p && *++str); | |
584 | ||
585 | if(!*str) str=NULL; | |
586 | return(str); | |
587 | } | |
588 | ||
589 | void optimize_sql_stmt(buf) | |
03c05291 | 590 | char *buf; |
cc0088db | 591 | { |
592 | char *point=buf, *pat, *eopat, *esc1, *esc2, *csr; | |
593 | ||
594 | for(point=buf; point=sqlstrstr(point,"LIKE"); point++) { | |
595 | /* Now pointing to string "LIKE" */ | |
596 | ||
597 | /* Look at next word */ | |
598 | for(pat=point+4; *pat==' '; pat++) ; | |
599 | ||
600 | /* Is it a single-quote delimited string? */ | |
601 | if(*pat!='\'') continue; | |
602 | ||
603 | /* look for "escape" clause - save escape character */ | |
604 | /* 1. Find end of pattern */ | |
605 | for(eopat=pat+1; 1; eopat++) { | |
606 | if(*eopat=='\'') { | |
607 | if(eopat[1]=='\'') /* single-quote is self-escaping */ | |
608 | eopat++; | |
609 | else | |
610 | break; | |
611 | } | |
612 | } | |
613 | ||
614 | /* 2. Look at next word */ | |
615 | for(esc1=eopat; *++esc1==' ';) ; | |
616 | ||
617 | /* 3. esc1=0 if not "ESCAPE '?'", where the ? may be any character. */ | |
618 | if(strncmp(esc1,"ESCAPE",6)) esc1=NULL; | |
619 | ||
620 | if(esc1) { | |
621 | for(esc2=esc1+6; *esc2==' '; esc2++) ; | |
622 | ||
623 | if(*esc2++!='\'') continue; /* Bad SQL syntax. Skip. */ | |
624 | /* esc2 now points at the escape character itself */ | |
625 | if(esc2[1]!='\'') continue; /* Weird escape string. Skip. */ | |
626 | } else { | |
627 | esc2="\\"; | |
628 | } | |
629 | ||
630 | /* Is pattern free from special characters? */ | |
631 | for(csr=pat; csr<eopat; csr++) | |
632 | if((*csr=='%') || (*csr=='_') || (*csr==*esc2)) break; | |
633 | if(csr!=eopat) continue; /* Uses pattern matching. Skip. */ | |
634 | ||
635 | /* Optimize the query statement */ | |
636 | /* 1. Change "LIKE" to " = " */ | |
637 | memcpy(point," = ",4); | |
638 | ||
639 | /* 2. Change "ESCAPE" to " " */ | |
640 | if(esc1) { | |
641 | memset(esc1,' ',6); | |
642 | /* 3. Change "'*'" to " " */ | |
643 | /* (Changes '''' to " ") */ | |
644 | if(esc2) memset(esc2-1,' ',(*esc2=='\'')?4:3); | |
645 | } | |
646 | } | |
647 | } | |
648 | ||
03c05291 | 649 | void build_sql_stmt(result_buf, cmd, targetlist, argv, qual) |
650 | char *result_buf, *cmd, *targetlist, *argv[], *qual; | |
048b1b94 | 651 | { |
652 | char fmt_buf[MR_STMTBUF_LEN]; | |
99e09b48 | 653 | register char *res, *fmt; |
654 | ||
655 | if(qual) | |
656 | sprintf(fmt_buf,"%s %s WHERE %s",cmd,targetlist,qual); | |
657 | else | |
658 | sprintf(fmt_buf,"%s %s",cmd,targetlist); | |
659 | ||
660 | for(res=result_buf, fmt=fmt_buf; *fmt; fmt++) { | |
661 | if(*fmt=='%') { | |
662 | if(*++fmt) { | |
663 | switch(*fmt) { | |
664 | case '%': /* %% -> % */ | |
665 | *res++ = *fmt; | |
666 | break; | |
667 | case 's': | |
668 | if(*argv[0]) { | |
03c05291 | 669 | char *p=*argv; |
670 | while(*p) { | |
671 | if(*p=='\'') *res++='\''; /* double the ' */ | |
672 | *res++=*p++; | |
673 | } | |
99e09b48 | 674 | } |
675 | argv++; | |
676 | break; | |
677 | case 'd': | |
03c05291 | 678 | res+=sprintf(res,"%d",*(int *)*argv++); |
99e09b48 | 679 | break; |
680 | default: /* Swallow other %? pairs */ | |
681 | break; | |
682 | } | |
683 | } else break; | |
684 | } else *res++ = *fmt; /* text -> result buffer */ | |
048b1b94 | 685 | } |
686 | *res='\0'; | |
cc0088db | 687 | |
688 | optimize_sql_stmt(result_buf); | |
048b1b94 | 689 | } |
b070f8a1 | 690 | |
03c05291 | 691 | int do_update(q, argv, qual, action, actarg) |
692 | struct query *q; | |
693 | char *argv[], *qual, *actarg; | |
694 | int (*action)(); | |
048b1b94 | 695 | { |
696 | build_sql_stmt(stmt_buf,"UPDATE",q->tlist,argv,qual); | |
c9a214e4 | 697 | EXEC SQL EXECUTE IMMEDIATE :stmt_buf; |
b070f8a1 | 698 | if (mr_errcode) return(mr_errcode); |
699 | return(MR_SUCCESS); | |
048b1b94 | 700 | } |
b070f8a1 | 701 | |
03c05291 | 702 | int do_append(q, argv, pqual, action, actarg) |
703 | struct query *q; | |
704 | char *argv[], *pqual, *actarg; | |
705 | int (*action)(); | |
048b1b94 | 706 | { |
707 | build_sql_stmt(stmt_buf,"INSERT",q->tlist,argv,pqual); | |
c9a214e4 | 708 | EXEC SQL EXECUTE IMMEDIATE :stmt_buf; |
b070f8a1 | 709 | if (mr_errcode) return(mr_errcode); |
710 | return(MR_SUCCESS); | |
048b1b94 | 711 | } |
b070f8a1 | 712 | |
03c05291 | 713 | int do_delete(q, qual, action, actarg) |
714 | struct query *q; | |
715 | char *qual, *actarg; | |
716 | int (*action)(); | |
048b1b94 | 717 | { |
03c05291 | 718 | sprintf(stmt_buf,"DELETE FROM %s WHERE %s",table_name[q->rtable],qual); |
048b1b94 | 719 | EXEC SQL EXECUTE IMMEDIATE :stmt_buf; |
b070f8a1 | 720 | if (mr_errcode) return(mr_errcode); |
721 | return(MR_SUCCESS); | |
048b1b94 | 722 | } |
b070f8a1 | 723 | |
724 | ||
725 | /** | |
726 | ** set_next_object_id - set next object id in values table | |
727 | ** | |
728 | ** Inputs: object - object name in values table and in objects | |
729 | ** table - name of table objects are found in | |
1a41acb7 | 730 | ** limit - should the ID be range limited |
b070f8a1 | 731 | ** |
732 | ** - called before an APPEND operation to set the next object id to | |
733 | ** be used for the new record to the next free value | |
734 | ** | |
735 | **/ | |
736 | ||
03c05291 | 737 | int set_next_object_id(object, table, limit) |
738 | EXEC SQL BEGIN DECLARE SECTION; | |
739 | char *object; | |
740 | EXEC SQL END DECLARE SECTION; | |
741 | enum tables table; | |
742 | int limit; | |
048b1b94 | 743 | { |
744 | EXEC SQL BEGIN DECLARE SECTION; | |
c9a214e4 | 745 | int value; |
048b1b94 | 746 | EXEC SQL END DECLARE SECTION; |
45bf7573 | 747 | int starting_value; |
748 | ||
048b1b94 | 749 | EXEC SQL SELECT value INTO :value FROM numvalues WHERE name = :object; |
750 | if (sqlca.sqlerrd[2] != 1) | |
1a41acb7 | 751 | return(MR_NO_ID); |
752 | ||
45bf7573 | 753 | starting_value=value; |
c9a214e4 | 754 | while (1) { |
45bf7573 | 755 | if (limit && value > MAX_ID_VALUE) |
756 | value = MIN_ID_VALUE; | |
757 | ||
03c05291 | 758 | sprintf(stmt_buf,"SELECT %s FROM %s WHERE %s=%d", |
759 | object,table_name[table],object,value); | |
760 | dosql(sqlbuffer); | |
45bf7573 | 761 | if (sqlca.sqlcode < 0) return(mr_errcode); |
03c05291 | 762 | if (sqlca.sqlcode == SQL_NO_MATCH) break; |
45bf7573 | 763 | |
45bf7573 | 764 | value++; |
765 | if (limit && value == starting_value) { | |
766 | com_err(whoami,0,"All id values have been used"); | |
767 | return(MR_NO_ID); | |
768 | } | |
b070f8a1 | 769 | } |
770 | ||
771 | if (LOG_RES) | |
c9a214e4 | 772 | com_err(whoami, 0, "setting ID %s to %d", object, value); |
048b1b94 | 773 | EXEC SQL UPDATE numvalues SET value = :value WHERE name = :object; |
b070f8a1 | 774 | return(MR_SUCCESS); |
048b1b94 | 775 | } |
b070f8a1 | 776 | |
777 | ||
778 | /* Turn a kerberos name into the user's ID of the account that principal | |
779 | * owns. Sets the kerberos ID and user ID. | |
780 | */ | |
781 | ||
782 | int set_krb_mapping(name, login, ok, kid, uid) | |
03c05291 | 783 | char *name, *login; |
784 | int ok, *kid, *uid; | |
048b1b94 | 785 | { |
786 | EXEC SQL BEGIN DECLARE SECTION; | |
787 | int u_id, k_id; | |
788 | char *krbname; | |
789 | EXEC SQL END DECLARE SECTION; | |
b070f8a1 | 790 | |
791 | krbname = name; | |
792 | *kid = 0; | |
793 | *uid = 0; | |
794 | ||
fbeb0263 | 795 | EXEC SQL SELECT km.users_id, km.string_id INTO :u_id, :k_id |
796 | FROM krbmap km, strings str | |
797 | WHERE km.string_id = str.string_id AND str.string = :krbname; | |
3e6ff9e4 | 798 | EXEC SQL COMMIT WORK; |
048b1b94 | 799 | |
03c05291 | 800 | if (dbms_errno) return(mr_errcode); |
b070f8a1 | 801 | |
048b1b94 | 802 | if (sqlca.sqlerrd[2] == 1) { /* rowcount */ |
b070f8a1 | 803 | *kid = -k_id; |
804 | *uid = u_id; | |
805 | return(MR_SUCCESS); | |
806 | } | |
807 | ||
03c05291 | 808 | if (name_to_id(name, STRINGS_TABLE, &k_id) == MR_SUCCESS) |
b070f8a1 | 809 | *kid = -k_id; |
810 | ||
048b1b94 | 811 | if (!ok) { |
b070f8a1 | 812 | *uid = *kid; |
813 | return(MR_SUCCESS); | |
814 | } | |
815 | ||
03c05291 | 816 | if (name_to_id(login, USERS_TABLE, uid) != MR_SUCCESS) |
b070f8a1 | 817 | *uid = 0; |
818 | ||
819 | if (*kid == 0) | |
820 | *kid = *uid; | |
03c05291 | 821 | if (dbms_errno) return(mr_errcode); |
b070f8a1 | 822 | return(MR_SUCCESS); |
048b1b94 | 823 | } |
b070f8a1 | 824 | |
825 | ||
826 | /* For now this just checks the argc's. It should also see that there | |
827 | * are no duplicate names. | |
828 | */ | |
829 | ||
03c05291 | 830 | void sanity_check_queries(void) |
b070f8a1 | 831 | { |
832 | register int i; | |
833 | int maxv = 0, maxa = 0; | |
b070f8a1 | 834 | extern int QueryCount2; |
835 | extern struct query Queries2[]; | |
b070f8a1 | 836 | |
837 | #define MAX(x,y) ((x) > (y) ? (x) : (y)) | |
838 | ||
b070f8a1 | 839 | for (i = 0; i < QueryCount2; i++) { |
840 | maxv = MAX(maxv, Queries2[i].vcnt); | |
841 | maxa = MAX(maxa, Queries2[i].argc); | |
842 | } | |
843 | if (MAX(maxv, maxa) > QMAXARGS) { | |
844 | com_err(whoami, 0, "A query has more args than QMAXARGS"); | |
845 | exit(1); | |
846 | } | |
847 | } | |
048b1b94 | 848 | |
03c05291 | 849 | |
850 | /* Generically do a SELECT, storing the results in the provided buffers */ | |
851 | ||
852 | void dosql(buffers) | |
853 | char *buffers[]; | |
854 | { | |
855 | int i, errcode=0, errlen; | |
856 | ||
857 | EXEC SQL PREPARE inc_stmt FROM :stmt_buf; | |
858 | if(sqlca.sqlcode) return; | |
859 | EXEC SQL DECLARE inc_crs CURSOR FOR inc_stmt; | |
860 | EXEC SQL OPEN inc_crs; | |
861 | mr_sqlda->N = QMAXARGS; | |
862 | EXEC SQL DESCRIBE SELECT LIST FOR inc_stmt INTO mr_sqlda; | |
863 | mr_sqlda->N = mr_sqlda->F; | |
864 | for(i=0; i<mr_sqlda->N; i++) { | |
865 | mr_sqlda->V[i]=buffers[i]; | |
866 | mr_sqlda->T[i]=97; | |
867 | mr_sqlda->L[i]=ARGLEN; | |
868 | } | |
869 | EXEC SQL FETCH inc_crs USING DESCRIPTOR mr_sqlda; | |
870 | ||
871 | /* if we got an error from the FETCH, we have to preserve it or the | |
872 | close will reset it and the caller will think nothing happened */ | |
873 | if(sqlca.sqlcode) { | |
874 | errcode=sqlca.sqlcode; | |
875 | errlen=sqlca.sqlerrm.sqlerrml; | |
876 | } | |
877 | ||
878 | EXEC SQL CLOSE inc_crs; | |
879 | if(errcode) { | |
880 | sqlca.sqlcode=errcode; | |
881 | sqlca.sqlerrm.sqlerrml=errlen; | |
882 | } | |
883 | } | |
884 | ||
885 | int do_for_all_rows(query, count, action, actarg) | |
886 | EXEC SQL BEGIN DECLARE SECTION; | |
887 | char *query; | |
888 | EXEC SQL END DECLARE SECTION; | |
889 | int count, (*action)(), actarg; | |
890 | { | |
891 | int i, rowcount=0; | |
892 | ||
893 | EXEC SQL PREPARE stmt FROM :query; | |
894 | if(sqlca.sqlcode) return; | |
895 | EXEC SQL DECLARE curs CURSOR FOR stmt; | |
896 | EXEC SQL OPEN curs; | |
897 | mr_sqlda->N = count; | |
898 | EXEC SQL DESCRIBE SELECT LIST FOR stmt INTO mr_sqlda; | |
899 | mr_sqlda->N = mr_sqlda->F; | |
900 | for(i=0; i<mr_sqlda->N; i++) { | |
901 | mr_sqlda->V[i]=sqlbuffer[i]; | |
902 | mr_sqlda->T[i]=97; | |
903 | mr_sqlda->L[i]=ARGLEN; | |
904 | } | |
905 | ||
906 | while(1) { | |
907 | EXEC SQL FETCH curs USING DESCRIPTOR mr_sqlda; | |
908 | if(sqlca.sqlcode != 0) break; | |
909 | (*action)(count, sqlbuffer, actarg); | |
910 | rowcount++; | |
911 | } | |
912 | EXEC SQL CLOSE curs; | |
913 | ||
914 | if (mr_errcode) return(mr_errcode); | |
915 | return ((rowcount == 0) ? MR_NO_MATCH : MR_SUCCESS); | |
916 | } | |
917 | ||
918 | ||
048b1b94 | 919 | /* eof:qrtn.dc */ |