mirror of https://github.com/sudo-project/sudo.git
79 lines
2.3 KiB
C
79 lines
2.3 KiB
C
/*
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* SPDX-License-Identifier: ISC
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*
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* Copyright (c) 2010-2013, 2015-2017 Todd C. Miller <Todd.Miller@sudo.ws>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#ifndef SUDOERS_PWUTIL_H
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#define SUDOERS_PWUTIL_H
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#define ptr_to_item(p) ((struct cache_item *)((char *)p - offsetof(struct cache_item_##p, p)))
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/*
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* Generic cache element.
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*/
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struct cache_item {
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unsigned int refcnt;
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unsigned int type; /* only used for gidlist */
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char registry[16]; /* AIX-specific, empty otherwise */
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/* key */
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union {
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uid_t uid;
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gid_t gid;
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char *name;
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} k;
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/* datum */
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union {
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struct passwd *pw;
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struct group *gr;
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struct group_list *grlist;
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struct gid_list *gidlist;
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} d;
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};
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/*
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* Container structs to simplify size and offset calculations and guarantee
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* proper alignment of struct passwd, group, gid_list and group_list.
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*/
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struct cache_item_pw {
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struct cache_item cache;
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struct passwd pw;
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};
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struct cache_item_gr {
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struct cache_item cache;
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struct group gr;
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};
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struct cache_item_grlist {
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struct cache_item cache;
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struct group_list grlist;
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/* actually bigger */
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};
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struct cache_item_gidlist {
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struct cache_item cache;
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struct gid_list gidlist;
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/* actually bigger */
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};
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struct cache_item *sudo_make_gritem(gid_t gid, const char *group);
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struct cache_item *sudo_make_grlist_item(const struct passwd *pw, char * const *groups);
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struct cache_item *sudo_make_gidlist_item(const struct passwd *pw, int ngids, GETGROUPS_T *gids, char * const *gidstrs, unsigned int type);
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struct cache_item *sudo_make_pwitem(uid_t uid, const char *user);
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bool sudo_valid_shell(const char *shell);
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#endif /* SUDOERS_PWUTIL_H */
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