131 lines
3.7 KiB
C
131 lines
3.7 KiB
C
/*
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* Copyright (c) 2020 Serge Hallyn
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the copyright holders or contributors may not be used to
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* endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
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* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <config.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <errno.h>
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#include <stdlib.h>
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#include <string.h>
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#include <pwd.h>
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#include <stdbool.h>
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#include "subordinateio.h"
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#include "idmapping.h"
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#include "subid.h"
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static const char *Prog = "(libsubid)";
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static FILE *shadow_logfd;
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bool libsubid_init(const char *progname, FILE * logfd)
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{
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if (progname) {
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progname = strdup(progname);
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if (progname)
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Prog = progname;
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else
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return false;
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}
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if (logfd) {
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shadow_logfd = logfd;
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return true;
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}
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shadow_logfd = fopen("/dev/null", "w");
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if (!shadow_logfd) {
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shadow_logfd = stderr;
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return false;
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}
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return true;
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}
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static
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int get_subid_ranges(const char *owner, enum subid_type id_type, struct subid_range **ranges)
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{
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return list_owner_ranges(owner, id_type, ranges);
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}
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int get_subuid_ranges(const char *owner, struct subid_range **ranges)
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{
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return get_subid_ranges(owner, ID_TYPE_UID, ranges);
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}
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int get_subgid_ranges(const char *owner, struct subid_range **ranges)
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{
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return get_subid_ranges(owner, ID_TYPE_GID, ranges);
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}
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static
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int get_subid_owner(unsigned long id, enum subid_type id_type, uid_t **owner)
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{
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return find_subid_owners(id, id_type, owner);
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}
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int get_subuid_owners(uid_t uid, uid_t **owner)
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{
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return get_subid_owner((unsigned long)uid, ID_TYPE_UID, owner);
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}
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int get_subgid_owners(gid_t gid, uid_t **owner)
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{
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return get_subid_owner((unsigned long)gid, ID_TYPE_GID, owner);
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}
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static
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bool grant_subid_range(struct subordinate_range *range, bool reuse,
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enum subid_type id_type)
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{
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return new_subid_range(range, id_type, reuse);
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}
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bool grant_subuid_range(struct subordinate_range *range, bool reuse)
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{
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return grant_subid_range(range, reuse, ID_TYPE_UID);
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}
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bool grant_subgid_range(struct subordinate_range *range, bool reuse)
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{
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return grant_subid_range(range, reuse, ID_TYPE_GID);
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}
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static
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bool ungrant_subid_range(struct subordinate_range *range, enum subid_type id_type)
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{
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return release_subid_range(range, id_type);
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}
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bool ungrant_subuid_range(struct subordinate_range *range)
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{
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return ungrant_subid_range(range, ID_TYPE_UID);
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}
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bool ungrant_subgid_range(struct subordinate_range *range)
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{
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return ungrant_subid_range(range, ID_TYPE_GID);
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}
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