2 Copyright (c) 2008, 2009, 2010 Frank Lahm <franklahm@gmail.com>
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
17 #endif /* HAVE_CONFIG_H */
26 #ifdef HAVE_SOLARIS_ACLS
29 #ifdef HAVE_POSIX_ACLS
31 #include <acl/libacl.h>
34 #include <atalk/errchk.h>
35 #include <atalk/adouble.h>
36 #include <atalk/vfs.h>
37 #include <atalk/afp.h>
38 #include <atalk/util.h>
39 #include <atalk/cnid.h>
40 #include <atalk/logger.h>
41 #include <atalk/uuid.h>
42 #include <atalk/acl.h>
44 #include "directory.h"
50 #include "acl_mappings.h"
53 #define SOLARIS_2_DARWIN 1
54 #define DARWIN_2_SOLARIS 2
55 #define POSIX_DEFAULT_2_DARWIN 3
56 #define POSIX_ACCESS_2_DARWIN 4
57 #define DARWIN_2_POSIX 5
62 /********************************************************
63 * Basic and helper funcs
64 ********************************************************/
67 Takes a users name, uid and primary gid and checks if user is member of any group
68 Returns -1 if no or error, 0 if yes
70 static int check_group(char *name, uid_t uid _U_, gid_t pgid, gid_t path_gid)
79 EC_NULL(grp = getgrgid(path_gid));
82 while (grp->gr_mem[i] != NULL) {
83 if ( (strcmp(grp->gr_mem[i], name)) == 0 ) {
84 LOG(log_debug, logtype_afpd, "check_group: requested user:%s is member of: %s", name, grp->gr_name);
95 /********************************************************
97 ********************************************************/
99 #ifdef HAVE_SOLARIS_ACLS
101 Remove any trivial ACE "in-place". Returns no of non-trivial ACEs
103 static int strip_trivial_aces(ace_t **saces, int sacecount)
108 ace_t *aces = *saces;
111 /* Count non-trivial ACEs */
112 for (i=0; i < sacecount; ) {
113 if ( ! (aces[i].a_flags & (ACE_OWNER | ACE_GROUP | ACE_EVERYONE)))
117 /* malloc buffer for new ACL */
118 EC_NULL_LOG(new_aces = malloc(nontrivaces * sizeof(ace_t)));
120 /* Copy non-trivial ACEs */
121 for (i=0, j=0; i < sacecount; ) {
122 if ( ! (aces[i].a_flags & (ACE_OWNER | ACE_GROUP | ACE_EVERYONE))) {
123 memcpy(&new_aces[j], &aces[i], sizeof(ace_t));
132 LOG(log_debug7, logtype_afpd, "strip_trivial_aces: non-trivial ACEs: %d", nontrivaces);
140 Remove non-trivial ACEs "in-place". Returns no of trivial ACEs.
142 static int strip_nontrivial_aces(ace_t **saces, int sacecount)
147 ace_t *aces = *saces;
150 /* Count trivial ACEs */
151 for (i=0; i < sacecount; ) {
152 if ((aces[i].a_flags & (ACE_OWNER | ACE_GROUP | ACE_EVERYONE)))
156 /* malloc buffer for new ACL */
157 EC_NULL_LOG(new_aces = malloc(trivaces * sizeof(ace_t)));
159 /* Copy trivial ACEs */
160 for (i=0, j=0; i < sacecount; ) {
161 if ((aces[i].a_flags & (ACE_OWNER | ACE_GROUP | ACE_EVERYONE))) {
162 memcpy(&new_aces[j], &aces[i], sizeof(ace_t));
171 LOG(log_debug7, logtype_afpd, "strip_nontrivial_aces: trivial ACEs: %d", trivaces);
181 static ace_t *concat_aces(ace_t *aces1, int ace1count, ace_t *aces2, int ace2count)
187 /* malloc buffer for new ACL */
188 EC_NULL_LOG(new_aces = malloc((ace1count + ace2count) * sizeof(ace_t)));
190 /* Copy ACEs from buf1 */
191 for (i=0; i < ace1count; ) {
192 memcpy(&new_aces[i], &aces1[i], sizeof(ace_t));
198 /* Copy ACEs from buf2 */
199 for (i=0; i < ace2count; ) {
200 memcpy(&new_aces[j], &aces2[i], sizeof(ace_t));
211 Maps ACE array from Solaris to Darwin. Darwin ACEs are stored in network byte order.
212 Return numer of mapped ACEs or -1 on error.
213 All errors while mapping (e.g. getting UUIDs from LDAP) are fatal.
215 static int map_aces_solaris_to_darwin(ace_t *aces, darwin_ace_t *darwin_aces, int ace_count)
221 struct passwd *pwd = NULL;
222 struct group *grp = NULL;
224 LOG(log_debug7, logtype_afpd, "map_aces_solaris_to_darwin: parsing %d ACES", ace_count);
227 LOG(log_debug7, logtype_afpd, "map_aces_solaris_to_darwin: parsing ACE No. %d", ace_count + 1);
228 /* if its a ACE resulting from nfsv4 mode mapping, discard it */
229 if (aces->a_flags & (ACE_OWNER | ACE_GROUP | ACE_EVERYONE)) {
230 LOG(log_debug, logtype_afpd, "map_aces_solaris_to_darwin: trivial ACE");
235 if ( ! (aces->a_flags & ACE_IDENTIFIER_GROUP) ) {
237 LOG(log_debug, logtype_afpd, "map_aces_solaris_to_darwin: found user ACE with uid: %d", aces->a_who);
239 EC_NULL_LOG(pwd = getpwuid(aces->a_who));
240 LOG(log_debug, logtype_afpd, "map_aces_solaris_to_darwin: uid: %d -> name: %s", aces->a_who, pwd->pw_name);
242 EC_ZERO_LOG(getuuidfromname(pwd->pw_name, UUID_USER, darwin_aces->darwin_ace_uuid));
244 /* its a group ace */
245 LOG(log_debug, logtype_afpd, "map_aces_solaris_to_darwin: found group ACE with gid: %d", aces->a_who);
247 EC_NULL_LOG(grp = getgrgid(aces->a_who));
248 LOG(log_debug, logtype_afpd, "map_aces_solaris_to_darwin: gid: %d -> name: %s", aces->a_who, grp->gr_name);
249 EC_ZERO_LOG(getuuidfromname(grp->gr_name, UUID_GROUP, darwin_aces->darwin_ace_uuid));
253 if (aces->a_type == ACE_ACCESS_ALLOWED_ACE_TYPE)
254 flags = DARWIN_ACE_FLAGS_PERMIT;
255 else if (aces->a_type == ACE_ACCESS_DENIED_ACE_TYPE)
256 flags = DARWIN_ACE_FLAGS_DENY;
257 else { /* unsupported type */
261 for(i=0; nfsv4_to_darwin_flags[i].from != 0; i++) {
262 if (aces->a_flags & nfsv4_to_darwin_flags[i].from)
263 flags |= nfsv4_to_darwin_flags[i].to;
265 darwin_aces->darwin_ace_flags = htonl(flags);
269 for (i=0; nfsv4_to_darwin_rights[i].from != 0; i++) {
270 if (aces->a_access_mask & nfsv4_to_darwin_rights[i].from)
271 rights |= nfsv4_to_darwin_rights[i].to;
273 darwin_aces->darwin_ace_rights = htonl(rights);
286 Maps ACE array from Darwin to Solaris. Darwin ACEs are expected in network byte order.
287 Return numer of mapped ACEs or -1 on error.
288 All errors while mapping (e.g. getting UUIDs from LDAP) are fatal.
290 int map_aces_darwin_to_solaris(darwin_ace_t *darwin_aces, ace_t *nfsv4_aces, int ace_count)
293 int i, mapped_aces = 0;
294 uint32_t darwin_ace_flags;
295 uint32_t darwin_ace_rights;
296 uint16_t nfsv4_ace_flags;
297 uint32_t nfsv4_ace_rights;
305 nfsv4_ace_rights = 0;
308 EC_ZERO(getnamefromuuid(darwin_aces->darwin_ace_uuid, &name, &uuidtype));
310 if (uuidtype == UUID_USER) {
311 EC_NULL_LOG(pwd = getpwnam(name));
312 nfsv4_aces->a_who = pwd->pw_uid;
313 } else { /* hopefully UUID_GROUP*/
314 EC_NULL_LOG(grp = getgrnam(name));
315 nfsv4_aces->a_who = (uid_t)(grp->gr_gid);
316 nfsv4_ace_flags |= ACE_IDENTIFIER_GROUP;
321 /* now type: allow/deny */
322 darwin_ace_flags = ntohl(darwin_aces->darwin_ace_flags);
323 if (darwin_ace_flags & DARWIN_ACE_FLAGS_PERMIT)
324 nfsv4_aces->a_type = ACE_ACCESS_ALLOWED_ACE_TYPE;
325 else if (darwin_ace_flags & DARWIN_ACE_FLAGS_DENY)
326 nfsv4_aces->a_type = ACE_ACCESS_DENIED_ACE_TYPE;
327 else { /* unsupported type */
332 for(i=0; darwin_to_nfsv4_flags[i].from != 0; i++) {
333 if (darwin_ace_flags & darwin_to_nfsv4_flags[i].from)
334 nfsv4_ace_flags |= darwin_to_nfsv4_flags[i].to;
338 darwin_ace_rights = ntohl(darwin_aces->darwin_ace_rights);
339 for (i=0; darwin_to_nfsv4_rights[i].from != 0; i++) {
340 if (darwin_ace_rights & darwin_to_nfsv4_rights[i].from)
341 nfsv4_ace_rights |= darwin_to_nfsv4_rights[i].to;
344 LOG(log_debug9, logtype_afpd, "map_aces_darwin_to_solaris: ACE flags: Darwin:%08x -> NFSv4:%04x", darwin_ace_flags, nfsv4_ace_flags);
345 LOG(log_debug9, logtype_afpd, "map_aces_darwin_to_solaris: ACE rights: Darwin:%08x -> NFSv4:%08x", darwin_ace_rights, nfsv4_ace_rights);
347 nfsv4_aces->a_flags = nfsv4_ace_flags;
348 nfsv4_aces->a_access_mask = nfsv4_ace_rights;
361 #endif /* HAVE_SOLARIS_ACLS */
363 #ifdef HAVE_POSIX_ACLS
364 static int posix_ace_set_mode(acl_entry_t entry, uint32_t darwin_ace_rights, int is_dir)
367 acl_permset_t permset;
369 if ((ret = acl_get_permset(entry, &permset)) != 0) {
372 if ((ret = acl_clear_perms(permset)) != 0) {
375 if ((darwin_ace_rights & DARWIN_ACE_READ_DATA)
376 && ((ret = acl_add_perm(permset, ACL_READ)) != 0)) {
379 if ((darwin_ace_rights & (DARWIN_ACE_WRITE_DATA | (DARWIN_ACE_DELETE_CHILD & is_dir)))
380 && ((ret = acl_add_perm(permset, ACL_WRITE)) != 0)) {
383 if ((darwin_ace_rights & DARWIN_ACE_EXECUTE)
384 && ((ret = acl_add_perm(permset, ACL_EXECUTE)) != 0)) {
387 return acl_set_permset(entry, permset);
391 * Map Darwin ACL to POSIX ACL.
393 * aclp must point to a acl_init'ed acl_t or an acl_t that can eg contain default ACEs.
395 * @param darwin_aces (r) pointer to darwin_aces buffer
396 * @param aclp (rw) pointer to an initialized acl_t
397 * @param is_dir (r) 1 for directories, 0 for files
398 * @param ace_count (r) number of ACEs in darwin_aces buffer
400 * @returns 0 on success storing the result in aclp, -1 on error.
402 static int map_acl_darwin_to_posix(const darwin_ace_t *darwin_aces,
413 uint32_t darwin_ace_flags;
415 while (ace_count--) {
416 /* type: allow/deny, posix only has allow */
417 darwin_ace_flags = ntohl(darwin_aces->darwin_ace_flags);
418 if ( ! (darwin_ace_flags & DARWIN_ACE_FLAGS_PERMIT)) {
423 /* POSIX ACLs don't have all the inherit stuff */
425 && (darwin_ace_flags & (DARWIN_ACE_FLAGS_FILE_INHERIT
426 | DARWIN_ACE_FLAGS_DIRECTORY_INHERIT))) {
433 EC_ZERO_LOG(acl_create_entry(aclp, &e));
436 EC_ZERO_LOG(getnamefromuuid(darwin_aces->darwin_ace_uuid, &name, &uuidtype));
437 if (uuidtype == UUID_USER) {
438 EC_NULL_LOG(pwd = getpwnam(name));
441 } else { /* hopefully UUID_GROUP*/
442 EC_NULL_LOG(getgrnam(name));
444 id = (uid_t)(grp->gr_gid);
449 EC_ZERO_LOG(acl_set_tag_type(e, tag));
450 EC_ZERO_LOG(acl_set_qualifier(e, &id));
451 posix_ace_set_mode(e, ntohl(darwin_aces->darwin_ace_rights), is_dir);
464 * Map ACEs from POSIX to Darwin.
465 * type is either POSIX_DEFAULT_2_DARWIN or POSIX_ACCESS_2_DARWIN, cf. acl_get_file.
466 * Return number of mapped ACES, -1 on error.
468 static int map_acl_posix_to_darwin(int type, const acl_t acl, darwin_ace_t *darwin_aces)
473 int entry_id = ACL_FIRST_ENTRY;
476 acl_permset_t permset, mask;
479 struct passwd *pwd = NULL;
480 struct group *grp = NULL;
483 darwin_ace_t *saved_darwin_aces = darwin_aces;
485 LOG(log_maxdebug, logtype_afpd, "map_aces_posix_to_darwin(%s)",
486 (type & MAP_MASK) == POSIX_DEFAULT_2_DARWIN ?
487 "POSIX_DEFAULT_2_DARWIN" : "POSIX_ACCESS_2_DARWIN");
489 /* itereate through all ACEs */
490 while (acl_get_entry(acl, entry_id, &e) == 1) {
491 entry_id = ACL_NEXT_ENTRY;
494 EC_ZERO_LOG(acl_get_tag_type(e, &tag));
496 /* we return user and group ACE */
499 EC_NULL_LOG(uid = (uid_t *)acl_get_qualifier(e));
500 EC_NULL_LOG(pwd = getpwuid(*uid));
501 LOG(log_debug, logtype_afpd, "map_aces_posix_to_darwin: uid: %d -> name: %s",
503 EC_ZERO_LOG(getuuidfromname(pwd->pw_name, UUID_USER, darwin_aces->darwin_ace_uuid));
509 EC_NULL_LOG(gid = (gid_t *)acl_get_qualifier(e));
510 EC_NULL_LOG(grp = getgrgid(*gid));
511 LOG(log_debug, logtype_afpd, "map_aces_posix_to_darwin: gid: %d -> name: %s",
513 EC_ZERO_LOG(getuuidfromname(grp->gr_name, UUID_GROUP, darwin_aces->darwin_ace_uuid));
518 /* store mask so we can apply it later in a second loop */
520 EC_ZERO_LOG(acl_get_permset(e, &mask));
529 flags = DARWIN_ACE_FLAGS_PERMIT;
530 if ((type & MAP_MASK) == POSIX_DEFAULT_2_DARWIN)
531 flags |= DARWIN_ACE_FLAGS_FILE_INHERIT
532 | DARWIN_ACE_FLAGS_DIRECTORY_INHERIT
533 | DARWIN_ACE_FLAGS_ONLY_INHERIT;
534 darwin_aces->darwin_ace_flags = htonl(flags);
537 EC_ZERO_LOG(acl_get_permset(e, &permset));
540 if (acl_get_perm(permset, ACL_READ))
541 rights = DARWIN_ACE_READ_DATA
542 | DARWIN_ACE_READ_EXTATTRIBUTES
543 | DARWIN_ACE_READ_ATTRIBUTES
544 | DARWIN_ACE_READ_SECURITY;
545 if (acl_get_perm(permset, ACL_WRITE)) {
546 rights |= DARWIN_ACE_WRITE_DATA
547 | DARWIN_ACE_APPEND_DATA
548 | DARWIN_ACE_WRITE_EXTATTRIBUTES
549 | DARWIN_ACE_WRITE_ATTRIBUTES;
550 if ((type & ~MAP_MASK) == IS_DIR)
551 rights |= DARWIN_ACE_DELETE;
553 if (acl_get_perm(permset, ACL_EXECUTE))
554 rights |= DARWIN_ACE_EXECUTE;
556 darwin_aces->darwin_ace_rights = htonl(rights);
563 /* Loop through the mapped ACE buffer once again, applying the mask */
564 /* Map the mask to Darwin ACE rights first */
566 if (acl_get_perm(mask, ACL_READ))
567 rights = DARWIN_ACE_READ_DATA
568 | DARWIN_ACE_READ_EXTATTRIBUTES
569 | DARWIN_ACE_READ_ATTRIBUTES
570 | DARWIN_ACE_READ_SECURITY;
571 if (acl_get_perm(mask, ACL_WRITE)) {
572 rights |= DARWIN_ACE_WRITE_DATA
573 | DARWIN_ACE_APPEND_DATA
574 | DARWIN_ACE_WRITE_EXTATTRIBUTES
575 | DARWIN_ACE_WRITE_ATTRIBUTES;
576 if ((type & ~MAP_MASK) == IS_DIR)
577 rights |= DARWIN_ACE_DELETE;
579 if (acl_get_perm(mask, ACL_EXECUTE))
580 rights |= DARWIN_ACE_EXECUTE;
581 for (int i = mapped_aces; i > 0; i--) {
582 saved_darwin_aces->darwin_ace_rights &= htonl(rights);
589 if (uid) acl_free(uid);
590 if (gid) acl_free(gid);
596 * Multiplex ACL mapping (SOLARIS_2_DARWIN, DARWIN_2_SOLARIS, POSIX_2_DARWIN, DARWIN_2_POSIX).
597 * Reads from 'aces' buffer, writes to 'rbuf' buffer.
598 * Caller must provide buffer.
599 * Darwin ACEs are read and written in network byte order.
600 * Needs to know how many ACEs are in the ACL (ace_count) for Solaris ACLs.
601 * Ignores trivial ACEs.
602 * Return no of mapped ACEs or -1 on error.
604 static int map_acl(int type, const void *acl, darwin_ace_t *buf, int ace_count)
608 LOG(log_debug9, logtype_afpd, "map_acl: BEGIN");
610 switch (type & MAP_MASK) {
612 #ifdef HAVE_SOLARIS_ACLS
613 case SOLARIS_2_DARWIN:
614 mapped_aces = map_aces_solaris_to_darwin( acl, buf, ace_count);
617 case DARWIN_2_SOLARIS:
618 mapped_aces = map_aces_darwin_to_solaris( buf, acl, ace_count);
620 #endif /* HAVE_SOLARIS_ACLS */
622 #ifdef HAVE_POSIX_ACLS
623 case POSIX_DEFAULT_2_DARWIN:
624 mapped_aces = map_acl_posix_to_darwin(type, (const acl_t)acl, buf);
627 case POSIX_ACCESS_2_DARWIN:
628 mapped_aces = map_acl_posix_to_darwin(type, (const acl_t)acl, buf);
633 #endif /* HAVE_POSIX_ACLS */
640 LOG(log_debug9, logtype_afpd, "map_acl: END");
644 /* Get ACL from object omitting trivial ACEs. Map to Darwin ACL style and
645 store Darwin ACL at rbuf. Add length of ACL written to rbuf to *rbuflen.
646 Returns 0 on success, -1 on error. */
647 static int get_and_map_acl(char *name, char *rbuf, size_t *rbuflen)
652 uint32_t *darwin_ace_count = (u_int32_t *)rbuf;
653 #ifdef HAVE_SOLARIS_ACLS
657 #ifdef HAVE_POSIX_ACLS
660 LOG(log_debug9, logtype_afpd, "get_and_map_acl: BEGIN");
662 /* Skip length and flags */
667 #ifdef HAVE_SOLARIS_ACLS
668 EC_NEG1(ace_count = get_nfsv4_acl(name, &aces));
669 EC_NEG1(mapped_aces = map_acl(SOLARIS_2_DARWIN, aces, (darwin_ace_t *)rbuf, ace_count));
670 #endif /* HAVE_SOLARIS_ACLS */
672 #ifdef HAVE_POSIX_ACLS
673 acl_t defacl = NULL , accacl = NULL;
675 /* stat to check if its a dir */
676 EC_ZERO_LOG(stat(name, &st));
678 /* if its a dir, check for default acl too */
680 if (S_ISDIR(st.st_mode)) {
682 EC_NULL_LOG(defacl = acl_get_file(name, ACL_TYPE_DEFAULT));
683 EC_NEG1(mapped_aces = map_acl(POSIX_DEFAULT_2_DARWIN | dirflag,
685 (darwin_ace_t *)rbuf,
689 EC_NULL_LOG(accacl = acl_get_file(name, ACL_TYPE_ACCESS));
692 EC_NEG1(tmp = map_acl(POSIX_ACCESS_2_DARWIN | dirflag,
694 (darwin_ace_t *)(rbuf + mapped_aces * sizeof(darwin_ace_t)),
697 #endif /* HAVE_POSIX_ACLS */
699 LOG(log_debug, logtype_afpd, "get_and_map_acl: mapped %d ACEs", mapped_aces);
701 *darwin_ace_count = htonl(mapped_aces);
702 *rbuflen += sizeof(darwin_acl_header_t) + (mapped_aces * sizeof(darwin_ace_t));
707 #ifdef HAVE_SOLARIS_ACLS
708 if (aces) free(aces);
710 #ifdef HAVE_POSIX_ACLS
711 if (defacl) acl_free(defacl);
712 if (accacl) acl_free(accacl);
713 #endif /* HAVE_POSIX_ACLS */
715 LOG(log_debug9, logtype_afpd, "get_and_map_acl: END");
720 /* Removes all non-trivial ACLs from object. Returns full AFPERR code. */
721 static int remove_acl(const struct vol *vol,const char *path, int dir)
725 #ifdef HAVE_SOLARIS_ACLS
726 /* Ressource etc. first */
727 if ((ret = vol->vfs->vfs_remove_acl(vol, path, dir)) != AFP_OK)
729 /* now the data fork or dir */
730 ret = remove_acl_vfs(path);
737 - the client sends a complete list of ACEs, not only new ones. So we dont need to do
738 any combination business (one exception being 'kFileSec_Inherit': see next)
739 - client might request that we add inherited ACEs via 'kFileSec_Inherit'.
740 We will store inherited ACEs first, which is Darwins canonical order.
741 - returns AFPerror code
743 #ifdef HAVE_SOLARIS_ACLS
744 static int set_acl(const struct vol *vol, char *name, int inherit, char *ibuf)
747 int i, nfsv4_ace_count;
748 int tocopy_aces_count = 0, new_aces_count = 0, trivial_ace_count = 0;
749 ace_t *old_aces, *new_aces = NULL;
753 LOG(log_debug9, logtype_afpd, "set_acl: BEGIN");
755 /* Get no of ACEs the client put on the wire */
756 ace_count = htonl(*((uint32_t *)ibuf));
757 ibuf += 8; /* skip ACL flags (see acls.h) */
760 /* inherited + trivial ACEs */
761 flags = ACE_INHERITED_ACE | ACE_OWNER | ACE_GROUP | ACE_EVERYONE;
763 /* only trivial ACEs */
764 flags = ACE_OWNER | ACE_GROUP | ACE_EVERYONE;
766 /* Get existing ACL and count ACEs which have to be copied */
767 if ((nfsv4_ace_count = get_nfsv4_acl(name, &old_aces)) == -1)
769 for ( i=0; i < nfsv4_ace_count; i++) {
770 if (old_aces[i].a_flags & flags)
774 /* Now malloc buffer exactly sized to fit all new ACEs */
775 if (EC_NULL_CUSTOM(new_aces = malloc((ace_count + tocopy_aces_count) * sizeof(ace_t)))) {
776 LOG(log_error, logtype_afpd, "set_acl: malloc %s", strerror(errno));
777 EC_STATUS(AFPERR_MISC);
781 /* Start building new ACL */
783 /* Copy local inherited ACEs. Therefore we have 'Darwin canonical order' (see chmod there):
784 inherited ACEs first. */
786 for (i=0; i < nfsv4_ace_count; i++) {
787 if (old_aces[i].a_flags & ACE_INHERITED_ACE) {
788 memcpy(&new_aces[new_aces_count], &old_aces[i], sizeof(ace_t));
793 LOG(log_debug7, logtype_afpd, "set_acl: copied %d inherited ACEs", new_aces_count);
795 /* Now the ACEs from the client */
796 if (EC_NEG1_CUSTOM(map_acl(DARWIN_2_SOLARIS,
797 &new_aces[new_aces_count],
798 (darwin_ace_t *)ibuf,
800 EC_STATUS(AFPERR_PARAM);
803 new_aces_count += ace_count;
804 LOG(log_debug7, logtype_afpd, "set_acl: mapped %d ACEs from client", ace_count);
806 /* Now copy the trivial ACEs */
807 for (i=0; i < nfsv4_ace_count; i++) {
808 if (old_aces[i].a_flags & (ACE_OWNER | ACE_GROUP | ACE_EVERYONE)) {
809 memcpy(&new_aces[new_aces_count], &old_aces[i], sizeof(ace_t));
814 LOG(log_debug7, logtype_afpd, "set_acl: copied %d trivial ACEs", trivial_ace_count);
816 /* Ressourcefork first.
817 Note: for dirs we set the same ACL on the .AppleDouble/.Parent _file_. This
818 might be strange for ACE_DELETE_CHILD and for inheritance flags. */
819 if (EC_ZERO_CUSTOM(vol->vfs->vfs_acl(vol, name, ACE_SETACL, new_aces_count, new_aces))) {
820 LOG(log_error, logtype_afpd, "set_acl: error setting acl: %s", strerror(errno));
821 if (errno == (EACCES | EPERM))
822 EC_STATUS(AFPERR_ACCESS);
823 else if (errno == ENOENT)
824 EC_STATUS(AFPERR_NOITEM);
826 EC_STATUS(AFPERR_MISC);
829 if (EC_ZERO_CUSTOM(acl(name, ACE_SETACL, new_aces_count, new_aces))) {
830 LOG(log_error, logtype_afpd, "set_acl: error setting acl: %s", strerror(errno));
831 if (errno == (EACCES | EPERM))
832 EC_STATUS(AFPERR_ACCESS);
833 else if (errno == ENOENT)
834 EC_STATUS(AFPERR_NOITEM);
836 EC_STATUS(AFPERR_MISC);
843 if (old_aces) free(old_aces);
844 if (new_aces) free(new_aces);
846 LOG(log_debug9, logtype_afpd, "set_acl: END");
849 #endif /* HAVE_SOLARIS_ACLS */
851 #ifdef HAVE_POSIX_ACLS
852 static int set_acl(const struct vol *vol, const char *name, int inherit, char *ibuf)
857 acl_t mode_acl = NULL;
859 LOG(log_maxdebug, logtype_afpd, "set_acl: BEGIN");
861 /* Get no of ACEs the client put on the wire */
862 uint32_t ace_count = htonl(*((uint32_t *)ibuf));
863 ibuf += 8; /* skip ACL flags (see acls.h) */
866 EC_ZERO_LOG_ERR(stat(name, &st), AFPERR_NOOBJ);
869 /* get default ACEs */
870 if (S_ISDIR(st.st_mode)) {
872 EC_NULL_LOG_ERR(acl = acl_get_file(name, ACL_TYPE_DEFAULT), AFPERR_MISC);
875 EC_NULL_LOG_ERR(acl = acl_init(0), AFPERR_MISC);
878 /* Now combine acl with aces from mode */
879 EC_NULL_LOG_ERR(mode_acl = acl_from_mode(st.st_mode), AFPERR_MISC);
880 int entry_id = ACL_FIRST_ENTRY;
882 while (acl_get_entry(mode_acl, entry_id, &se) == 1) {
883 EC_ZERO_LOG_ERR(acl_create_entry(&acl, &de), AFPERR_MISC);
884 EC_ZERO_LOG_ERR(acl_copy_entry(de, se), AFPERR_MISC);
885 entry_id = ACL_NEXT_ENTRY;
888 /* map_acl_darwin_to_posix adds the clients aces */
889 EC_ZERO_ERR(map_acl_darwin_to_posix((darwin_ace_t *)ibuf, &acl, is_dir, ace_count), AFPERR_MISC);
891 /* calcuate ACL mask */
892 EC_ZERO_LOG_ERR(acl_calc_mask(&acl), AFPERR_MISC);
895 EC_ZERO_LOG_ERR(acl_valid(acl), AFPERR_MISC);
898 EC_ZERO_LOG_ERR(acl_set_file(name, ACL_TYPE_ACCESS, acl), AFPERR_MISC);
901 if (acl) acl_free(acl);
902 if (mode_acl) acl_free(mode_acl);
903 LOG(log_maxdebug, logtype_afpd, "set_acl: END: %u", ret);
906 #endif /* HAVE_POSIX_ACLS */
909 Checks if a given UUID has requested_rights(type darwin_ace_rights) for path.
910 Note: this gets called frequently and is a good place for optimizations !
912 #ifdef HAVE_SOLARIS_ACLS
913 static int check_acl_access(const char *path, const uuidp_t uuid, uint32_t requested_darwin_rights)
915 int ret, i, ace_count, dir, checkgroup;
916 char *username = NULL; /* might be group too */
920 uint32_t requested_rights = 0, allowed_rights = 0, denied_rights = 0;
924 int check_user_trivace = 0, check_group_trivace = 0;
931 LOG(log_debug9, logtype_afpd, "check_access: BEGIN. Request: %08x", requested_darwin_rights);
933 /* Get uid or gid from UUID */
934 if ( (getnamefromuuid(uuid, &username, &uuidtype)) != 0) {
935 LOG(log_error, logtype_afpd, "check_access: error getting name from UUID");
940 if ((lstat(path, &st)) != 0) {
941 LOG(log_error, logtype_afpd, "check_access: stat: %s", strerror(errno));
945 dir = S_ISDIR(st.st_mode);
947 if (uuidtype == UUID_USER) {
948 pwd = getpwnam(username);
950 LOG(log_error, logtype_afpd, "check_access: getpwnam: %s", strerror(errno));
957 /* If user is file/dir owner we must check the user trivial ACE */
958 if (uid == st.st_uid) {
959 LOG(log_debug, logtype_afpd, "check_access: user: %s is files owner. Must check trivial user ACE", username);
960 check_user_trivace = 1;
963 /* Now check if requested user is files owning group. If yes we must check the group trivial ACE */
964 if ( (check_group(username, uid, pgid, st.st_gid)) == 0) {
965 LOG(log_debug, logtype_afpd, "check_access: user: %s is in group: %d. Must check trivial group ACE", username, st.st_gid);
966 check_group_trivace = 1;
968 } else { /* hopefully UUID_GROUP*/
969 LOG(log_error, logtype_afpd, "check_access: afp_access for UUID of groups not supported!");
971 grp = getgrnam(username);
973 LOG(log_error, logtype_afpd, "check_access: getgrnam: %s", strerror(errno));
976 if (st.st_gid == grp->gr_gid )
977 check_group_trivace = 1;
981 /* Map requested rights to Solaris style. */
982 for (i=0; darwin_to_nfsv4_rights[i].from != 0; i++) {
983 if (requested_darwin_rights & darwin_to_nfsv4_rights[i].from)
984 requested_rights |= darwin_to_nfsv4_rights[i].to;
987 /* Get ACL from file/dir */
988 if ( (ace_count = get_nfsv4_acl(path, &aces)) == -1) {
989 LOG(log_error, logtype_afpd, "check_access: error getting ACEs");
993 if (ace_count == 0) {
994 LOG(log_debug, logtype_afpd, "check_access: 0 ACEs from get_nfsv4_acl");
999 /* Now check requested rights */
1000 ret = AFPERR_ACCESS;
1002 do { /* Loop through ACEs */
1003 who = aces[i].a_who;
1004 flags = aces[i].a_flags;
1005 type = aces[i].a_type;
1006 rights = aces[i].a_access_mask;
1008 if (flags & ACE_INHERIT_ONLY_ACE)
1011 /* Check if its a group ACE and set checkgroup to 1 if yes */
1013 if ( (flags & ACE_IDENTIFIER_GROUP) && !(flags & ACE_GROUP) ) {
1014 if ( (check_group(username, uid, pgid, who)) == 0)
1020 /* Now the tricky part: decide if ACE effects our user. I'll explain:
1021 if its a dedicated (non trivial) ACE for the user
1023 if its a ACE for a group we're member of
1025 if its a trivial ACE_OWNER ACE and requested UUID is the owner
1027 if its a trivial ACE_GROUP ACE and requested UUID is group
1029 if its a trivial ACE_EVERYONE ACE
1033 ( (who == uid) && !(flags & (ACE_TRIVIAL|ACE_IDENTIFIER_GROUP)) ) ||
1035 ( (flags & ACE_OWNER) && check_user_trivace ) ||
1036 ( (flags & ACE_GROUP) && check_group_trivace ) ||
1037 ( flags & ACE_EVERYONE )
1039 /* Found an applicable ACE */
1040 if (type == ACE_ACCESS_ALLOWED_ACE_TYPE)
1041 allowed_rights |= rights;
1042 else if (type == ACE_ACCESS_DENIED_ACE_TYPE)
1043 /* Only or to denied rights if not previously allowed !! */
1044 denied_rights |= ((!allowed_rights) & rights);
1046 } while (++i < ace_count);
1049 /* Darwin likes to ask for "delete_child" on dir,
1050 "write_data" is actually the same, so we add that for dirs */
1051 if (dir && (allowed_rights & ACE_WRITE_DATA))
1052 allowed_rights |= ACE_DELETE_CHILD;
1054 if (requested_rights & denied_rights) {
1055 LOG(log_debug, logtype_afpd, "check_access: some requested right was denied:");
1056 ret = AFPERR_ACCESS;
1057 } else if ((requested_rights & allowed_rights) != requested_rights) {
1058 LOG(log_debug, logtype_afpd, "check_access: some requested right wasn't allowed:");
1059 ret = AFPERR_ACCESS;
1061 LOG(log_debug, logtype_afpd, "check_access: all requested rights are allowed:");
1065 LOG(log_debug, logtype_afpd, "check_access: Requested rights: %08x, allowed_rights: %08x, denied_rights: %08x, Result: %d",
1066 requested_rights, allowed_rights, denied_rights, ret);
1072 LOG(log_debug9, logtype_afpd, "check_access: END");
1076 #endif /* HAVE_SOLARIS_ACLS */
1078 #ifdef HAVE_POSIX_ACLS
1079 static int check_acl_access(const char *path, const uuidp_t uuid, uint32_t requested_darwin_rights)
1082 * FIXME: for OS X >= 10.6 it seems fp_access isn't called anymore, instead
1083 * the client just tries to perform any action, relying on the server
1084 * to enforce permission (which the OS does for us), returning appropiate
1085 * error codes in case the action failed.
1086 * So to summarize: I think it's safe to not implement this function and
1087 * just always return AFP_OK.
1091 #endif /* HAVE_POSIX_ACLS */
1093 /********************************************************
1095 ********************************************************/
1097 int afp_access(AFPObj *obj, char *ibuf, size_t ibuflen _U_, char *rbuf _U_, size_t *rbuflen)
1102 uint32_t did, darwin_ace_rights;
1104 struct path *s_path;
1107 LOG(log_debug9, logtype_afpd, "afp_access: BEGIN");
1112 memcpy(&vid, ibuf, sizeof( vid ));
1113 ibuf += sizeof(vid);
1114 if (NULL == ( vol = getvolbyvid( vid ))) {
1115 LOG(log_error, logtype_afpd, "afp_access: error getting volid:%d", vid);
1116 return AFPERR_NOOBJ;
1119 memcpy(&did, ibuf, sizeof( did ));
1120 ibuf += sizeof( did );
1121 if (NULL == ( dir = dirlookup( vol, did ))) {
1122 LOG(log_error, logtype_afpd, "afp_access: error getting did:%d", did);
1129 /* Store UUID address */
1130 uuid = (uuidp_t)ibuf;
1131 ibuf += UUID_BINSIZE;
1133 /* Store ACE rights */
1134 memcpy(&darwin_ace_rights, ibuf, 4);
1135 darwin_ace_rights = ntohl(darwin_ace_rights);
1138 /* get full path and handle file/dir subtleties in netatalk code*/
1139 if (NULL == ( s_path = cname( vol, dir, &ibuf ))) {
1140 LOG(log_error, logtype_afpd, "afp_getacl: cname got an error!");
1141 return AFPERR_NOOBJ;
1143 if (!s_path->st_valid)
1144 of_statdir(vol, s_path);
1145 if ( s_path->st_errno != 0 ) {
1146 LOG(log_error, logtype_afpd, "afp_getacl: cant stat");
1147 return AFPERR_NOOBJ;
1150 ret = check_acl_access(s_path->u_name, uuid, darwin_ace_rights);
1152 LOG(log_debug9, logtype_afpd, "afp_access: END");
1156 int afp_getacl(AFPObj *obj, char *ibuf, size_t ibuflen _U_, char *rbuf _U_, size_t *rbuflen)
1162 uint16_t vid, bitmap;
1163 struct path *s_path;
1167 LOG(log_debug9, logtype_afpd, "afp_getacl: BEGIN");
1171 memcpy(&vid, ibuf, sizeof( vid ));
1172 ibuf += sizeof(vid);
1173 if (NULL == ( vol = getvolbyvid( vid ))) {
1174 LOG(log_error, logtype_afpd, "afp_getacl: error getting volid:%d", vid);
1175 return AFPERR_NOOBJ;
1178 memcpy(&did, ibuf, sizeof( did ));
1179 ibuf += sizeof( did );
1180 if (NULL == ( dir = dirlookup( vol, did ))) {
1181 LOG(log_error, logtype_afpd, "afp_getacl: error getting did:%d", did);
1185 memcpy(&bitmap, ibuf, sizeof( bitmap ));
1186 memcpy(rbuf, ibuf, sizeof( bitmap ));
1187 bitmap = ntohs( bitmap );
1188 ibuf += sizeof( bitmap );
1189 rbuf += sizeof( bitmap );
1190 *rbuflen += sizeof( bitmap );
1192 /* skip maxreplysize */
1195 /* get full path and handle file/dir subtleties in netatalk code*/
1196 if (NULL == ( s_path = cname( vol, dir, &ibuf ))) {
1197 LOG(log_error, logtype_afpd, "afp_getacl: cname got an error!");
1198 return AFPERR_NOOBJ;
1200 if (!s_path->st_valid)
1201 of_statdir(vol, s_path);
1202 if ( s_path->st_errno != 0 ) {
1203 LOG(log_error, logtype_afpd, "afp_getacl: cant stat");
1204 return AFPERR_NOOBJ;
1207 /* Shall we return owner UUID ? */
1208 if (bitmap & kFileSec_UUID) {
1209 LOG(log_debug, logtype_afpd, "afp_getacl: client requested files owner user UUID");
1210 if (NULL == (pw = getpwuid(s_path->st.st_uid)))
1212 LOG(log_debug, logtype_afpd, "afp_getacl: got uid: %d, name: %s", s_path->st.st_uid, pw->pw_name);
1213 if ((ret = getuuidfromname(pw->pw_name, UUID_USER, rbuf)) != 0)
1215 rbuf += UUID_BINSIZE;
1216 *rbuflen += UUID_BINSIZE;
1219 /* Shall we return group UUID ? */
1220 if (bitmap & kFileSec_GRPUUID) {
1221 LOG(log_debug, logtype_afpd, "afp_getacl: client requested files owner group UUID");
1222 if (NULL == (gr = getgrgid(s_path->st.st_gid)))
1224 LOG(log_debug, logtype_afpd, "afp_getacl: got gid: %d, name: %s", s_path->st.st_gid, gr->gr_name);
1225 if ((ret = getuuidfromname(gr->gr_name, UUID_GROUP, rbuf)) != 0)
1227 rbuf += UUID_BINSIZE;
1228 *rbuflen += UUID_BINSIZE;
1231 /* Shall we return ACL ? */
1232 if (bitmap & kFileSec_ACL) {
1233 LOG(log_debug, logtype_afpd, "afp_getacl: client requested files ACL");
1234 get_and_map_acl(s_path->u_name, rbuf, rbuflen);
1237 LOG(log_debug9, logtype_afpd, "afp_getacl: END");
1241 int afp_setacl(AFPObj *obj, char *ibuf, size_t ibuflen _U_, char *rbuf _U_, size_t *rbuflen)
1247 uint16_t vid, bitmap;
1248 struct path *s_path;
1250 LOG(log_debug9, logtype_afpd, "afp_setacl: BEGIN");
1254 memcpy(&vid, ibuf, sizeof( vid ));
1255 ibuf += sizeof(vid);
1256 if (NULL == ( vol = getvolbyvid( vid ))) {
1257 LOG(log_error, logtype_afpd, "afp_setacl: error getting volid:%d", vid);
1258 return AFPERR_NOOBJ;
1261 memcpy(&did, ibuf, sizeof( did ));
1262 ibuf += sizeof( did );
1263 if (NULL == ( dir = dirlookup( vol, did ))) {
1264 LOG(log_error, logtype_afpd, "afp_setacl: error getting did:%d", did);
1268 memcpy(&bitmap, ibuf, sizeof( bitmap ));
1269 bitmap = ntohs( bitmap );
1270 ibuf += sizeof( bitmap );
1272 /* get full path and handle file/dir subtleties in netatalk code*/
1273 if (NULL == ( s_path = cname( vol, dir, &ibuf ))) {
1274 LOG(log_error, logtype_afpd, "afp_setacl: cname got an error!");
1275 return AFPERR_NOOBJ;
1277 if (!s_path->st_valid)
1278 of_statdir(vol, s_path);
1279 if ( s_path->st_errno != 0 ) {
1280 LOG(log_error, logtype_afpd, "afp_setacl: cant stat");
1281 return AFPERR_NOOBJ;
1283 LOG(log_debug, logtype_afpd, "afp_setacl: unixname: %s", s_path->u_name);
1286 if ((unsigned long)ibuf & 1)
1289 /* Start processing request */
1291 /* Change owner: dont even try */
1292 if (bitmap & kFileSec_UUID) {
1293 LOG(log_debug, logtype_afpd, "afp_setacl: change owner request. discarded.");
1294 ret = AFPERR_ACCESS;
1295 ibuf += UUID_BINSIZE;
1298 /* Change group: certain changes might be allowed, so try it. FIXME: not implemented yet. */
1299 if (bitmap & kFileSec_UUID) {
1300 LOG(log_debug, logtype_afpd, "afp_setacl: change group request. not supported this time.");
1302 ibuf += UUID_BINSIZE;
1306 if (bitmap & kFileSec_REMOVEACL) {
1307 LOG(log_debug, logtype_afpd, "afp_setacl: Remove ACL request.");
1308 if ((ret = remove_acl(vol, s_path->u_name, S_ISDIR(s_path->st.st_mode))) != AFP_OK)
1309 LOG(log_error, logtype_afpd, "afp_setacl: error from remove_acl");
1313 if (bitmap & kFileSec_ACL) {
1314 LOG(log_debug, logtype_afpd, "afp_setacl: Change ACL request.");
1316 /* Check if its our job to preserve inherited ACEs */
1317 if (bitmap & kFileSec_Inherit)
1318 ret = set_acl(vol, s_path->u_name, 1, ibuf);
1320 ret = set_acl(vol, s_path->u_name, 0, ibuf);
1324 LOG(log_warning, logtype_afpd, "afp_setacl(\"%s/%s\"): error",
1325 getcwdpath(), s_path->u_name);
1330 LOG(log_debug9, logtype_afpd, "afp_setacl: END");
1335 unix.c/accessmode calls this: map ACL to OS 9 mode
1337 void acltoownermode(char *path, struct stat *st, uid_t uid, struct maccess *ma)
1341 int r_ok, w_ok, x_ok;
1343 if ( ! (AFPobj->options.flags & OPTION_UUID) || ! (AFPobj->options.flags & OPTION_ACL2OS9MODE))
1346 LOG(log_maxdebug, logtype_afpd, "acltoownermode('%s')", path);
1348 if ((pw = getpwuid(uid)) == NULL) {
1349 LOG(log_error, logtype_afpd, "acltoownermode: %s", strerror(errno));
1353 /* We need the UUID for check_acl_access */
1354 if ((getuuidfromname(pw->pw_name, UUID_USER, uuid)) != 0)
1357 /* These work for files and dirs */
1358 r_ok = check_acl_access(path, uuid, DARWIN_ACE_READ_DATA);
1359 w_ok = check_acl_access(path, uuid, (DARWIN_ACE_WRITE_DATA|DARWIN_ACE_APPEND_DATA));
1360 x_ok = check_acl_access(path, uuid, DARWIN_ACE_EXECUTE);
1362 LOG(log_debug7, logtype_afpd, "acltoownermode: ma_user before: %04o",ma->ma_user);
1364 ma->ma_user |= AR_UREAD;
1366 ma->ma_user |= AR_UWRITE;
1368 ma->ma_user |= AR_USEARCH;
1369 LOG(log_debug7, logtype_afpd, "acltoownermode: ma_user after: %04o", ma->ma_user);
1375 We're being called at the end of afp_createdir. We're (hopefully) inside dir
1376 and ".AppleDouble" and ".AppleDouble/.Parent" should have already been created.
1377 We then inherit any explicit ACE from "." to ".AppleDouble" and ".AppleDouble/.Parent".
1378 FIXME: add to VFS layer ?
1380 #ifdef HAVE_SOLARIS_ACLS
1381 void addir_inherit_acl(const struct vol *vol)
1383 ace_t *diraces = NULL, *adaces = NULL, *combinedaces = NULL;
1384 int diracecount, adacecount;
1386 LOG(log_debug9, logtype_afpd, "addir_inherit_acl: BEGIN");
1388 /* Check if ACLs are enabled for the volume */
1389 if (vol->v_flags & AFPVOL_ACLS) {
1391 if ((diracecount = get_nfsv4_acl(".", &diraces)) <= 0)
1393 /* Remove any trivial ACE from "." */
1394 if ((diracecount = strip_trivial_aces(&diraces, diracecount)) <= 0)
1398 Inherit to ".AppleDouble"
1401 if ((adacecount = get_nfsv4_acl(".AppleDouble", &adaces)) <= 0)
1403 /* Remove any non-trivial ACE from ".AppleDouble" */
1404 if ((adacecount = strip_nontrivial_aces(&adaces, adacecount)) <= 0)
1408 if ((combinedaces = concat_aces(diraces, diracecount, adaces, adacecount)) == NULL)
1411 /* Now set new acl */
1412 if ((acl(".AppleDouble", ACE_SETACL, diracecount + adacecount, combinedaces)) != 0)
1413 LOG(log_error, logtype_afpd, "addir_inherit_acl: acl: %s", strerror(errno));
1418 combinedaces = NULL;
1421 Inherit to ".AppleDouble/.Parent"
1424 if ((adacecount = get_nfsv4_acl(".AppleDouble/.Parent", &adaces)) <= 0)
1426 if ((adacecount = strip_nontrivial_aces(&adaces, adacecount)) <= 0)
1430 if ((combinedaces = concat_aces(diraces, diracecount, adaces, adacecount)) == NULL)
1433 /* Now set new acl */
1434 if ((acl(".AppleDouble/.Parent", ACE_SETACL, diracecount + adacecount, combinedaces)) != 0)
1435 LOG(log_error, logtype_afpd, "addir_inherit_acl: acl: %s", strerror(errno));
1441 LOG(log_debug9, logtype_afpd, "addir_inherit_acl: END");
1447 #endif /* HAVE_SOLARIS_ACLS */
1449 #ifdef HAVE_POSIX_ACLS
1450 void addir_inherit_acl(const struct vol *vol)
1454 #endif /* HAVE_POSIX_ACLS */