3 * Check access to queries
5 * Copyright (C) 1987-1998 by the Massachusetts Institute of Technology
6 * For copying and distribution information, please see the file
10 #include <mit-copyright.h>
11 #include "mr_server.h"
18 EXEC SQL INCLUDE sqlca;
23 extern int dbms_errno, mr_errcode;
25 EXEC SQL WHENEVER SQLERROR DO dbmserr();
28 /* Specialized Access Routines */
30 /* access_user - verify that client name equals specified login name
32 * - since field validation routines are called first, a users_id is
33 * now in argv[0] instead of the login name.
36 int access_user(struct query *q, char *argv[], client *cl)
38 if (cl->users_id != *(int *)argv[0])
46 /* access_login - verify that client name equals specified login name
48 * argv[0...n] contain search info. q->
51 int access_login(struct query *q, char *argv[], client *cl)
53 EXEC SQL BEGIN DECLARE SECTION;
55 EXEC SQL END DECLARE SECTION;
60 if (!strcmp(q->shortname, "gual"))
62 EXEC SQL SELECT users_id INTO :id FROM users
63 WHERE login = :argv[0] AND users_id != 0;
65 else if (!strcmp(q->shortname, "gubl"))
67 EXEC SQL SELECT users_id INTO :id FROM users u
68 WHERE u.login = :argv[0] AND u.users_id != 0;
70 else if (!strcmp(q->shortname, "guau"))
72 EXEC SQL SELECT users_id INTO :id FROM users
73 WHERE unix_uid = :argv[0] AND users_id != 0;
75 else if (!strcmp(q->shortname, "gubu"))
77 EXEC SQL SELECT users_id INTO :id FROM users u
78 WHERE u.unix_uid = :argv[0] AND u.users_id != 0;
81 if (sqlca.sqlcode == SQL_NO_MATCH)
82 return MR_NO_MATCH; /* ought to be MR_USER, but this is what
83 gual returns, so we have to be consistent */
84 else if (sqlca.sqlerrd[2] != 1 || id != cl->users_id)
91 /* access_spob - check access for set_pobox */
93 int access_spob(struct query *q, char *argv[], client *cl)
95 EXEC SQL BEGIN DECLARE SECTION;
97 EXEC SQL END DECLARE SECTION;
99 if (!strcmp(argv[1], "IMAP"))
101 EXEC SQL SELECT owner INTO :id FROM filesys f
102 WHERE f.label = :argv[2] AND f.type = 'IMAP' AND
103 f.lockertype = 'USER';
104 if (cl->users_id != id)
107 if (cl->users_id != *(int *)argv[0])
114 /* access_list - check access for most list operations
116 * Inputs: argv[0] - list_id
118 * argv[2] - member ID (only for queries "amtl" and "dmfl")
119 * argv[7] - group ID (only for query "ulis")
122 * - check that client is a member of the access control list
123 * - OR, if the query is add_member_to_list or delete_member_from_list
124 * and the list is public, allow access if client = member
127 int access_list(struct query *q, char *argv[], client *cl)
129 EXEC SQL BEGIN DECLARE SECTION;
130 int list_id, acl_id, flags, gid, users_id;
131 char acl_type[LIST_ACL_TYPE_SIZE], name[LIST_NAME_SIZE], *newname;
132 EXEC SQL END DECLARE SECTION;
135 list_id = *(int *)argv[0];
136 EXEC SQL SELECT acl_id, acl_type, gid, publicflg, name
137 INTO :acl_id, :acl_type, :gid, :flags, :name
139 WHERE list_id = :list_id;
141 if (sqlca.sqlerrd[2] != 1)
144 /* Allow client to add self to public list or delete self from any
147 if ((((!strcmp("amtl", q->shortname) ||
148 !strcmp("atml", q->shortname)) && flags) ||
149 (!strcmp("dmfl", q->shortname))))
151 if (!strcmp("USER", argv[1]) && *(int *)argv[2] == cl->users_id)
153 if (!strcmp("KERBEROS", argv[1]) && *(int *)argv[2] == -cl->client_id)
155 } /* if update_list, don't allow them to change the GID or rename to
156 a username other than their own */
157 else if (!strcmp("ulis", q->shortname))
159 if (!strcmp(argv[7], UNIQUE_GID))
166 if (gid != atoi(argv[7]))
172 if (!strcmp("ulis", q->shortname))
174 /* Check that it doesn't conflict with the Grouper namespace. */
175 if (strlen(newname) > 4 && isdigit(newname[2]) &&
176 isdigit(newname[3]) && newname[4] == '-')
178 if (!strncasecmp(newname, "fa", 2) ||
179 !strncasecmp(newname, "sp", 2) ||
180 !strncasecmp(newname, "su", 2) ||
181 !strncasecmp(newname, "ja", 2))
185 /* Don't let anyone take owner-foo list names. They interact
186 * weirdly with the aliases automatically generated by
189 if (!strncasecmp(newname, "owner-", 6))
193 EXEC SQL SELECT users_id INTO :users_id FROM users
194 WHERE login = :newname;
195 if ((sqlca.sqlcode != SQL_NO_MATCH) && strcmp(strtrim(name), newname) &&
196 (users_id != cl->users_id))
200 /* check for client in access control list */
201 status = find_member(acl_type, acl_id, cl);
209 /* access_visible_list - allow access to list only if it is not hidden,
210 * or if the client is on the ACL
212 * Inputs: argv[0] - list_id
213 * cl - client identifier
216 int access_visible_list(struct query *q, char *argv[], client *cl)
218 EXEC SQL BEGIN DECLARE SECTION;
219 int list_id, acl_id, flags ;
220 char acl_type[LIST_ACL_TYPE_SIZE];
221 EXEC SQL END DECLARE SECTION;
224 list_id = *(int *)argv[0];
225 EXEC SQL SELECT hidden, acl_id, acl_type
226 INTO :flags, :acl_id, :acl_type
228 WHERE list_id = :list_id;
229 if (sqlca.sqlerrd[2] != 1)
234 /* check for client in access control list */
235 status = find_member(acl_type, acl_id, cl);
243 /* access_vis_list_by_name - allow access to list only if it is not hidden,
244 * or if the client is on the ACL
246 * Inputs: argv[0] - list name
247 * cl - client identifier
250 int access_vis_list_by_name(struct query *q, char *argv[], client *cl)
252 EXEC SQL BEGIN DECLARE SECTION;
253 int acl_id, flags, rowcount;
254 char acl_type[LIST_ACL_TYPE_SIZE], *listname;
255 EXEC SQL END DECLARE SECTION;
259 EXEC SQL SELECT hidden, acl_id, acl_type INTO :flags, :acl_id, :acl_type
260 FROM list WHERE name = :listname;
262 rowcount = sqlca.sqlerrd[2];
270 /* check for client in access control list */
271 status = find_member(acl_type, acl_id, cl);
279 /* access_member - allow user to access member of type "USER" and name matches
280 * username, or to access member of type "KERBEROS" and the principal matches
281 * the user, or to access member of type "LIST" and list is one that user is
282 * on the acl of, or the list is visible.
285 int access_member(struct query *q, char *argv[], client *cl)
287 if (!strcmp(argv[0], "LIST") || !strcmp(argv[0], "RLIST"))
288 return access_visible_list(q, &argv[1], cl);
290 if (!strcmp(argv[0], "USER") || !strcmp(argv[0], "RUSER"))
292 if (cl->users_id == *(int *)argv[1])
296 if (!strcmp(argv[0], "KERBEROS") || !strcmp(argv[0], "RKERBEROS"))
298 if (cl->client_id == -*(int *)argv[1])
306 /* access_qgli - special access routine for Qualified_get_lists. Allows
307 * access iff argv[0] == "TRUE" and argv[2] == "FALSE".
310 int access_qgli(struct query *q, char *argv[], client *cl)
312 if (!strcmp(argv[0], "TRUE") && !strcmp(argv[2], "FALSE"))
318 /* access_service - allow access if user is on ACL of service. Don't
319 * allow access if a wildcard is used.
322 int access_service(struct query *q, char *argv[], client *cl)
324 EXEC SQL BEGIN DECLARE SECTION;
326 char *name, acl_type[LIST_ACL_TYPE_SIZE];
327 EXEC SQL END DECLARE SECTION;
332 for (c = name; *c; c++)
337 EXEC SQL SELECT acl_id, acl_type INTO :acl_id, :acl_type FROM servers
339 if (sqlca.sqlerrd[2] > 1)
342 /* check for client in access control list */
343 status = find_member(acl_type, acl_id, cl);
351 /* access_filesys - verify that client is owner or on owners list of filesystem
355 int access_filesys(struct query *q, char *argv[], client *cl)
357 EXEC SQL BEGIN DECLARE SECTION;
358 int users_id, list_id;
360 EXEC SQL END DECLARE SECTION;
364 EXEC SQL SELECT owner, owners INTO :users_id, :list_id FROM filesys
367 if (sqlca.sqlerrd[2] != 1)
369 if (users_id == cl->users_id)
371 status = find_member("LIST", list_id, cl);
379 /* access_host - successful if owner of host, or subnet containing host
382 int access_host(struct query *q, char *argv[], client *cl)
384 EXEC SQL BEGIN DECLARE SECTION;
386 char mtype[MACHINE_OWNER_TYPE_SIZE], stype[SUBNET_OWNER_TYPE_SIZE];
387 EXEC SQL END DECLARE SECTION;
390 if (q->type == RETRIEVE)
392 if (strcmp(argv[0], "*") || strcmp(argv[1], "*") ||
393 strcmp(argv[2], "*") || strcmp(argv[3], "*"))
399 if (q->type == APPEND)
401 /* Non-query owner must set use to zero */
402 if (atoi(argv[6]) != 0)
405 /* ... and start the hostname with a letter */
406 if (isdigit(argv[0][0]))
409 id = *(int *)argv[8];
410 EXEC SQL SELECT s.owner_type, s.owner_id
411 INTO :stype, :sid FROM subnet s
412 WHERE s.snet_id = :id;
415 if (find_member(stype, sid, cl))
420 else /* q-type == UPDATE */
422 EXEC SQL BEGIN DECLARE SECTION;
423 int status, acomment, use, ocomment, snid;
424 char contact[MACHINE_CONTACT_SIZE], address[MACHINE_ADDRESS_SIZE];
425 char name[MACHINE_NAME_SIZE];
426 EXEC SQL END DECLARE SECTION;
428 id = *(int *)argv[0];
429 EXEC SQL SELECT m.name, m.use, m.contact, m.status, m.address,
430 m.owner_type, m.owner_id, m.acomment, m.ocomment, m.snet_id,
431 s.owner_type, s.owner_id INTO :name, :use, :contact, :status,
432 :address, :mtype, :mid, :acomment, :ocomment, :snid, :stype, :sid
433 FROM machine m, subnet s
434 WHERE m.mach_id = :id AND s.snet_id = m.snet_id;
438 /* non-query-owner cannot change use or ocomment */
439 if ((use != atoi(argv[7])) || (ocomment != *(int *)argv[14]))
442 /* or rename to start with digit */
443 if (isdigit(argv[1][0]) && strcmp(strtrim(name), argv[1]))
446 if (!find_member(stype, sid, cl))
448 if (find_member(mtype, mid, cl))
450 /* host owner also cannot change contact, status, address,
451 owner, or acomment */
452 if (strcmp(argv[6], strtrim(contact)) ||
453 (status != atoi(argv[8])) ||
454 strcmp(argv[10], strtrim(address)) ||
455 strcmp(argv[11], strtrim(mtype)) ||
456 (mid != *(int *)argv[12]) || (acomment != *(int *)argv[13]))
463 /* If moving to a new subnet, make sure user is on acl there */
464 id = *(int *)argv[9];
467 EXEC SQL SELECT owner_type, owner_id INTO :stype, :sid
468 FROM subnet WHERE snet_id=:id;
469 if (!find_member(stype, sid, cl))
478 /* access_ahal - check for adding a host alias.
479 * successful if host has less then 2 aliases and (client is owner of
481 * If deleting an alias, any owner will do.
484 int access_ahal(struct query *q, char *argv[], client *cl)
486 EXEC SQL BEGIN DECLARE SECTION;
487 int cnt, id, mid, sid;
488 char mtype[MACHINE_OWNER_TYPE_SIZE], stype[SUBNET_OWNER_TYPE_SIZE];
489 EXEC SQL END DECLARE SECTION;
492 if (q->type == RETRIEVE)
495 id = *(int *)argv[1];
497 if (q->type == APPEND && isdigit(argv[0][0]))
500 EXEC SQL SELECT count(name) INTO :cnt from hostalias WHERE mach_id = :id;
503 /* if the type is APPEND, this is ahal and we need to make sure there
504 * will be no more than 2 aliases. If it's not, it must be dhal and
507 if (q->type == APPEND && cnt >= 2)
509 EXEC SQL SELECT m.owner_type, m.owner_id, s.owner_type, s.owner_id
510 INTO :mtype, :mid, :stype, :sid FROM machine m, subnet s
511 WHERE m.mach_id = :id and s.snet_id = m.snet_id;
512 status = find_member(mtype, mid, cl);
515 status = find_member(stype, sid, cl);
523 /* access_snt - check for retrieving network structure
526 int access_snt(struct query *q, char *argv[], client *cl)
528 if (q->type == RETRIEVE)
536 int access_printer(struct query *q, char *argv[], client *cl)
538 EXEC SQL BEGIN DECLARE SECTION;
539 char type[PRINTSERVERS_OWNER_TYPE_SIZE];
541 EXEC SQL END DECLARE SECTION;
544 mach_id = *(int *)argv[PRN_RM];
545 EXEC SQL SELECT owner_type, owner_id INTO :type, :id
546 FROM printservers WHERE mach_id = :mach_id;
550 status = find_member(type, id, cl);