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, member_id, member_acl_id;
131 int memacl_id, mailman, mailman_id;
132 char acl_type[LIST_ACL_TYPE_SIZE], name[LIST_NAME_SIZE], *newname;
133 char member_acl_type[LIST_ACL_TYPE_SIZE], memacl_type[LIST_ACL_TYPE_SIZE];
134 EXEC SQL END DECLARE SECTION;
137 list_id = *(int *)argv[0];
138 member_id = *(int *)argv[2];
139 EXEC SQL SELECT acl_id, acl_type, memacl_id, memacl_type,
140 gid, publicflg, name, mailman, mailman_id
141 INTO :acl_id, :acl_type, :memacl_id, :memacl_type,
142 :gid, :flags, :name, :mailman, :mailman_id
144 WHERE list_id = :list_id;
146 if (sqlca.sqlerrd[2] != 1)
149 /* if update_list, don't allow them to change the GID or rename to a
150 username other than their own */
151 if (!strcmp("ulis", q->shortname))
153 if (!strcmp(argv[7], UNIQUE_GID))
160 if (gid != atoi(argv[7]))
166 /* Check that it doesn't conflict with the Grouper namespace. */
167 if (strlen(newname) > 4 && isdigit(newname[2]) &&
168 isdigit(newname[3]) && newname[4] == '-')
170 if (!strncasecmp(newname, "fa", 2) ||
171 !strncasecmp(newname, "sp", 2) ||
172 !strncasecmp(newname, "su", 2) ||
173 !strncasecmp(newname, "ja", 2))
177 /* Don't let anyone take owner-foo list names. They interact
178 * weirdly with the aliases automatically generated by
181 if (!strncasecmp(newname, "owner-", 6))
184 EXEC SQL SELECT users_id INTO :users_id FROM users
185 WHERE login = :newname;
186 if ((sqlca.sqlcode != SQL_NO_MATCH) && strcmp(strtrim(name), newname) &&
187 (users_id != cl->users_id))
190 /* For modern enough clients, don't allow ordinary users to toggle
191 * the mailman bit or change the server.
193 if (q->version >= 10)
195 if (mailman != atoi(argv[9]))
198 if (mailman_id != *(int *)argv[10])
203 /* check for client in access control list and return success right
204 * away if it's there. */
205 if (find_member(acl_type, acl_id, cl))
208 /* If not amtl, atml, or dmfl, we lose. */
209 if (strcmp(q->shortname, "amtl") && strcmp(q->shortname, "atml") &&
210 strcmp(q->shortname, "dmfl") && strcmp(q->shortname, "tmol"))
213 if (find_member(memacl_type, memacl_id, cl))
216 if (flags || q->type == DELETE)
218 if (!strcmp("USER", argv[1]) && *(int *)argv[2] == cl->users_id)
220 if (!strcmp("KERBEROS", argv[1]) && *(int *)argv[2] == -cl->client_id)
222 if (!strcmp("LIST", argv[1]) && !strcmp("dmfl", q->shortname))
224 EXEC SQL SELECT acl_id, acl_type INTO :member_acl_id,
227 WHERE list_id = :member_id;
229 if (find_member(member_acl_type, member_acl_id, cl))
234 /* Otherwise fail. */
239 /* access_visible_list - allow access to list only if it is not hidden,
240 * or if the client is on the ACL
242 * Inputs: argv[0] - list_id
243 * cl - client identifier
246 int access_visible_list(struct query *q, char *argv[], client *cl)
248 EXEC SQL BEGIN DECLARE SECTION;
249 int list_id, acl_id, memacl_id, flags ;
250 char acl_type[LIST_ACL_TYPE_SIZE], memacl_type[LIST_ACL_TYPE_SIZE];
251 EXEC SQL END DECLARE SECTION;
254 list_id = *(int *)argv[0];
255 EXEC SQL SELECT hidden, acl_id, acl_type, memacl_id, memacl_type
256 INTO :flags, :acl_id, :acl_type, :memacl_id, :memacl_type
258 WHERE list_id = :list_id;
259 if (sqlca.sqlerrd[2] != 1)
264 /* check for client in access control list */
265 status = find_member(acl_type, acl_id, cl);
268 status = find_member(memacl_type, memacl_id, cl);
276 /* access_vis_list_by_name - allow access to list only if it is not hidden,
277 * or if the client is on the ACL
279 * Inputs: argv[0] - list name
280 * cl - client identifier
283 int access_vis_list_by_name(struct query *q, char *argv[], client *cl)
285 EXEC SQL BEGIN DECLARE SECTION;
286 int acl_id, memacl_id, flags, rowcount, list_id;
287 char acl_type[LIST_ACL_TYPE_SIZE], memacl_type[LIST_ACL_TYPE_SIZE];
289 EXEC SQL END DECLARE SECTION;
293 EXEC SQL SELECT hidden, acl_id, acl_type, memacl_id, memacl_type, list_id
294 INTO :flags, :acl_id, :acl_type, :memacl_id, :memacl_type, :list_id
296 WHERE name = :listname;
298 rowcount = sqlca.sqlerrd[2];
306 /* If the user is a member of the acl, memacl, or the list itself,
309 status = find_member(acl_type, acl_id, cl);
311 status = find_member(memacl_type, memacl_id, cl);
313 status = find_member("LIST", list_id, cl);
321 /* access_member - allow user to access member of type "USER" and name matches
322 * username, or to access member of type "KERBEROS" and the principal matches
323 * the user, or to access member of type "LIST" and list is one that user is
324 * on the acl of, or the list is visible. Allow anyone to look up list
325 * memberships of MACHINEs.
328 int access_member(struct query *q, char *argv[], client *cl)
330 if (!strcmp(argv[0], "LIST") || !strcmp(argv[0], "RLIST"))
331 return access_visible_list(q, &argv[1], cl);
333 if (!strcmp(argv[0], "USER") || !strcmp(argv[0], "RUSER"))
335 if (cl->users_id == *(int *)argv[1])
339 if (!strcmp(argv[0], "KERBEROS") || !strcmp(argv[0], "RKERBEROS"))
341 if (cl->client_id == -*(int *)argv[1])
345 if (!strcmp(argv[0], "MACHINE") || !strcmp(argv[0], "RMACHINE"))
352 /* access_qgli - special access routine for Qualified_get_lists. Allows
353 * access iff argv[0] == "TRUE" and argv[2] == "FALSE".
356 int access_qgli(struct query *q, char *argv[], client *cl)
358 if (!strcmp(argv[0], "TRUE") && !strcmp(argv[2], "FALSE"))
364 /* access_service - allow access if user is on ACL of service. Don't
365 * allow access if a wildcard is used.
368 int access_service(struct query *q, char *argv[], client *cl)
370 EXEC SQL BEGIN DECLARE SECTION;
372 char *name, acl_type[LIST_ACL_TYPE_SIZE];
373 EXEC SQL END DECLARE SECTION;
378 for (c = name; *c; c++)
383 EXEC SQL SELECT acl_id, acl_type INTO :acl_id, :acl_type FROM servers
385 if (sqlca.sqlerrd[2] > 1)
388 /* check for client in access control list */
389 status = find_member(acl_type, acl_id, cl);
397 /* access_filesys - verify that client is owner or on owners list of filesystem
401 int access_filesys(struct query *q, char *argv[], client *cl)
403 EXEC SQL BEGIN DECLARE SECTION;
404 int users_id, list_id;
406 EXEC SQL END DECLARE SECTION;
410 EXEC SQL SELECT owner, owners INTO :users_id, :list_id FROM filesys
413 if (sqlca.sqlerrd[2] != 1)
415 if (users_id == cl->users_id)
417 status = find_member("LIST", list_id, cl);
425 /* access_host - successful if owner of host, or subnet containing host
428 int access_host(struct query *q, char *argv[], client *cl)
430 EXEC SQL BEGIN DECLARE SECTION;
431 int mid, sid, id, subnet_status;
432 char mtype[MACHINE_OWNER_TYPE_SIZE], stype[SUBNET_OWNER_TYPE_SIZE];
433 char *account_number;
434 EXEC SQL END DECLARE SECTION;
439 else if (q->version >= 6 && q->version < 8)
444 if (q->type == RETRIEVE)
446 if (strcmp(argv[0], "*") || strcmp(argv[1], "*") ||
447 strcmp(argv[2], "*") || strcmp(argv[3], "*"))
453 if (q->type == APPEND)
455 /* Non-query owner must set use to zero */
456 if (atoi(argv[6 + idx]) != 0)
459 /* ... and start the hostname with a letter */
460 if (isdigit(argv[0][0]))
463 id = *(int *)argv[8 + idx];
464 EXEC SQL SELECT s.owner_type, s.owner_id, s.status
465 INTO :stype, :sid, :subnet_status FROM subnet s
466 WHERE s.snet_id = :id;
469 /* Non query owner must provide valid billing information. */
472 if (subnet_status == SNET_STATUS_BILLABLE)
474 account_number = argv[7];
475 EXEC SQL SELECT account_number FROM accountnumbers
476 WHERE account_number = :account_number;
477 if (sqlca.sqlcode == SQL_NO_MATCH)
478 return MR_ACCOUNT_NUMBER;
482 if (find_member(stype, sid, cl))
487 else /* q-type == UPDATE */
489 EXEC SQL BEGIN DECLARE SECTION;
490 int status, acomment, use, ocomment, snid;
491 char contact[MACHINE_CONTACT_SIZE], address[MACHINE_ADDRESS_SIZE];
492 char name[MACHINE_NAME_SIZE];
493 char billing_contact[MACHINE_BILLING_CONTACT_SIZE];
494 EXEC SQL END DECLARE SECTION;
496 id = *(int *)argv[0];
497 EXEC SQL SELECT m.name, m.use, m.contact, m.billing_contact, m.status,
498 m.address, m.owner_type, m.owner_id, m.acomment, m.ocomment, m.snet_id,
499 s.owner_type, s.owner_id, s.status INTO :name, :use, :contact,
500 :billing_contact, :status, :address, :mtype, :mid, :acomment,
501 :ocomment, :snid, :stype, :sid, :subnet_status
502 FROM machine m, subnet s
503 WHERE m.mach_id = :id AND s.snet_id = m.snet_id;
507 /* Non query owner must provide valid billing information. */
510 if ((subnet_status == SNET_STATUS_BILLABLE) &&
511 (atoi(argv[10]) != 3))
513 account_number = argv[8];
514 EXEC SQL SELECT account_number FROM accountnumbers
515 WHERE account_number = :account_number;
516 if (sqlca.sqlcode == SQL_NO_MATCH)
517 return MR_ACCOUNT_NUMBER;
521 /* non-query-owner cannot change use or ocomment */
522 if ((use != atoi(argv[7 + idx])) || (ocomment != *(int *)argv[14 + idx]))
525 /* or rename to start with digit */
526 if (isdigit(argv[1][0]) && strcmp(strtrim(name), argv[1]))
529 if (!find_member(stype, sid, cl))
531 if (find_member(mtype, mid, cl))
533 /* host owner also cannot change contact, status, address,
534 owner, or acomment */
535 if (strcmp(argv[6], strtrim(contact)) ||
536 (status != atoi(argv[8 + idx])) ||
537 strcmp(argv[10 + idx], strtrim(address)) ||
538 strcmp(argv[11 + idx], strtrim(mtype)) ||
539 (mid != *(int *)argv[12 + idx]) ||
540 (acomment != *(int *)argv[13 + idx]))
542 /* Billing contact field didn't appear until version 6 */
544 if (strcmp(argv[7], strtrim(billing_contact)))
551 /* If moving to a new subnet, make sure user is on acl there */
552 id = *(int *)argv[9 + idx];
555 EXEC SQL SELECT owner_type, owner_id INTO :stype, :sid
556 FROM subnet WHERE snet_id=:id;
557 if (!find_member(stype, sid, cl))
566 /* access_ahal - check for adding a host alias.
567 * successful if host has less then 2 aliases and (client is owner of
569 * If deleting an alias, any owner will do.
572 int access_ahal(struct query *q, char *argv[], client *cl)
574 EXEC SQL BEGIN DECLARE SECTION;
575 int cnt, id, mid, sid;
576 char mtype[MACHINE_OWNER_TYPE_SIZE], stype[SUBNET_OWNER_TYPE_SIZE];
577 EXEC SQL END DECLARE SECTION;
580 if (q->type == RETRIEVE)
583 id = *(int *)argv[1];
585 if (q->type == APPEND && isdigit(argv[0][0]))
588 EXEC SQL SELECT count(name) INTO :cnt from hostalias WHERE mach_id = :id;
591 /* if the type is APPEND, this is ahal and we need to make sure there
592 * will be no more than 2 aliases. If it's not, it must be dhal and
595 if (q->type == APPEND && cnt >= 2)
597 EXEC SQL SELECT m.owner_type, m.owner_id, s.owner_type, s.owner_id
598 INTO :mtype, :mid, :stype, :sid FROM machine m, subnet s
599 WHERE m.mach_id = :id and s.snet_id = m.snet_id;
600 status = find_member(mtype, mid, cl);
603 status = find_member(stype, sid, cl);
611 /* access_snt - check for retrieving network structure
614 int access_snt(struct query *q, char *argv[], client *cl)
616 if (q->type == RETRIEVE)
624 int access_printer(struct query *q, char *argv[], client *cl)
626 EXEC SQL BEGIN DECLARE SECTION;
627 char type[PRINTSERVERS_OWNER_TYPE_SIZE];
629 EXEC SQL END DECLARE SECTION;
632 mach_id = *(int *)argv[PRN_RM];
633 EXEC SQL SELECT owner_type, owner_id INTO :type, :id
634 FROM printservers WHERE mach_id = :mach_id;
638 status = find_member(type, id, cl);
646 int access_zephyr(struct query *q, char *argv[], client *cl)
648 EXEC SQL BEGIN DECLARE SECTION;
649 char type[ZEPHYR_OWNER_TYPE_SIZE];
652 EXEC SQL END DECLARE SECTION;
655 class = argv[ZA_CLASS];
656 EXEC SQL SELECT owner_type, owner_id INTO :type, :id
657 FROM zephyr WHERE class = :class;
661 status = find_member(type, id, cl);
668 /* access_container - check access for most container operations
670 * Inputs: argv[0] - cnt_id
674 * - check if that client is a member of the access control list
675 * - OR, if the query is add_machine_to_container or delete_machine_from_container
676 * check if the client is a memeber of the mem_acl list
677 * - if the query is update_container and the container is to be renamed and
678 * it is a top-level container, only priviledged users can do it
681 int access_container(struct query *q, char *argv[], client *cl)
683 EXEC SQL BEGIN DECLARE SECTION;
684 int cnt_id, acl_id, memacl_id, mach_id, machine_owner_id, flag;
685 char acl_type[CONTAINERS_ACL_TYPE_SIZE], memacl_type[CONTAINERS_ACL_TYPE_SIZE];
686 char name[CONTAINERS_NAME_SIZE], *newname;
687 char machine_owner_type[MACHINE_OWNER_TYPE_SIZE];
688 EXEC SQL END DECLARE SECTION;
691 cnt_id = *(int *)argv[0];
693 /* if amcn or dmcn, container id is the second argument */
694 if (strcmp(q->shortname, "amcn") == 0 || strcmp(q->shortname, "dmcn") == 0)
696 mach_id = *(int *)argv[0];
697 cnt_id = *(int *)argv[1];
700 EXEC SQL SELECT acl_id, acl_type, memacl_id, memacl_type, name, publicflg
701 INTO :acl_id, :acl_type, :memacl_id, :memacl_type, :name, :flag
703 WHERE cnt_id = :cnt_id;
705 if (sqlca.sqlerrd[2] != 1)
708 /* trim off the trailing spaces */
709 strcpy(name, strtrim(name));
711 /* if the query is update_container and the containers is to be renamed
712 * and it is a top-level container, only dbadmin can do it */
713 if (!strcmp(q->shortname, "ucon"))
716 if (strcmp(name, newname) && strchr(name, '/') == NULL)
720 /* check for client in access control list and return success right
721 * away if it's there. */
722 if (find_member(acl_type, acl_id, cl))
725 /* If not amcn, dmcn, we lose. */
726 if (strcmp(q->shortname, "amcn") && strcmp(q->shortname, "dmcn"))
729 if (find_member(memacl_type, memacl_id, cl))
732 /* if the container is public or the query is delete, grant access if client
733 * is on owner list */
734 if (flag || q->type == DELETE)
736 EXEC SQL SELECT owner_type, owner_id INTO :machine_owner_type,
739 WHERE mach_id = :mach_id;
741 if (sqlca.sqlerrd[2] == 1 && strcmp("NONE", machine_owner_type) &&
742 find_member(machine_owner_type, machine_owner_id, cl))
745 /* Otherwise fail. */