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shared: add internal API for querying JSON user records via varlink 

This new API can be used in place of NSS by our own internal code if
more than the classic UNIX records are needed.
This commit is contained in:
Lennart Poettering 2019-08-07 15:26:32 +02:00
parent 9b2d907877
commit ec8e4a0ef1
3 changed files with 1390 additions and 0 deletions
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2
src/shared/meson.build
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@ -197,6 +197,8 @@ shared_sources = files('''
user-record-nss.h
user-record.c
user-record.h
userdb.c
userdb.h
utmp-wtmp.h
varlink.c
varlink.h

1347
src/shared/userdb.c Normal file
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41
src/shared/userdb.h Normal file
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@ -0,0 +1,41 @@
/* SPDX-License-Identifier: LGPL-2.1+ */
#pragma once
#include <sys/socket.h>
#include <sys/un.h>
#include "group-record.h"
#include "user-record.h"
/* Inquire local services for user/group records */
typedef struct UserDBIterator UserDBIterator;
UserDBIterator *userdb_iterator_free(UserDBIterator *iterator);
DEFINE_TRIVIAL_CLEANUP_FUNC(UserDBIterator*, userdb_iterator_free);
typedef enum UserDBFlags {
USERDB_AVOID_NSS = 1 << 0, /* don't do client-side nor server-side NSS */
USERDB_AVOID_DYNAMIC_USER = 1 << 1, /* exclude looking up in io.systemd.DynamicUser */
USERDB_AVOID_MULTIPLEXER = 1 << 2, /* exclude looking up via io.systemd.Multiplexer */
USERDB_DONT_SYNTHESIZE = 1 << 3, /* don't synthesize root/nobody */
} UserDBFlags;
int userdb_by_name(const char *name, UserDBFlags flags, UserRecord **ret);
int userdb_by_uid(uid_t uid, UserDBFlags flags, UserRecord **ret);
int userdb_all(UserDBFlags flags, UserDBIterator **ret);
int userdb_iterator_get(UserDBIterator *iterator, UserRecord **ret);
int groupdb_by_name(const char *name, UserDBFlags flags, GroupRecord **ret);
int groupdb_by_gid(gid_t gid, UserDBFlags flags, GroupRecord **ret);
int groupdb_all(UserDBFlags flags, UserDBIterator **ret);
int groupdb_iterator_get(UserDBIterator *iterator, GroupRecord **ret);
int membershipdb_by_user(const char *name, UserDBFlags flags, UserDBIterator **ret);
int membershipdb_by_group(const char *name, UserDBFlags flags, UserDBIterator **ret);
int membershipdb_all(UserDBFlags flags, UserDBIterator **ret);
int membershipdb_iterator_get(UserDBIterator *iterator, char **user, char **group);
int membershipdb_by_group_strv(const char *name, UserDBFlags flags, char ***ret);
int userdb_nss_compat_is_enabled(void);
int userdb_nss_compat_disable(void);