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sudo-project
GitHub Repository: sudo-project/sudo
 Path: blob/main/include/compat/nss_dbdefs.h
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/*

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 * SPDX-License-Identifier: ISC

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 *

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 * Copyright (c) 2013 Todd C. Miller <[email protected]>

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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 COMPAT_NSS_DBDEFS_H

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#define COMPAT_NSS_DBDEFS_H

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/*

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 * Bits of nss_dbdefs.h and nss_common.h needed to implement

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 * getgrouplist(3) using nss_search(3).

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 *

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 * HP-UX does not ship those headers so we need this compatibility header.

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 * It may also work on other systems that use a Solaris-derived nsswitch

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 * API.

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 */

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#ifdef NEED_HPUX_MUTEX

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# include <synch.h>

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#endif

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typedef enum {

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    NSS_SUCCESS,

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    NSS_NOTFOUND,

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    NSS_UNAVAIL,

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    NSS_TRYAGAIN

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} nss_status_t;

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typedef struct nss_db_params {

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    const char *name;

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    const char *config_name;

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    const char *default_config;

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    unsigned int max_active_per_src;

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    unsigned int max_dormant_per_src;  

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    int flags;

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    void *finders;

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    void *private;

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    void (*cleanup)(struct nss_db_params *);

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} nss_db_params_t;

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struct nss_groupsbymem {

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    const char *username;

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    gid_t *gid_array;

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    int maxgids;

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    int force_slow_way;

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    int (*str2ent)(const char *instr, int instr_len, void *ent, char *buffer, int buflen);

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    nss_status_t (*process_cstr)(const char *instr, int instr_len, struct nss_groupsbymem *);

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    int numgids;

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};

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typedef struct {

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    void *result;	/* group struct to fill in. */

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    char *buffer;	/* string buffer for above */

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    int buflen;		/* string buffer size */

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} nss_XbyY_buf_t;

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struct nss_db_state;

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typedef struct {

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    struct nss_db_state *s;

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#ifdef NEED_HPUX_MUTEX

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    lwp_mutex_t lock;

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#endif

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} nss_db_root_t;

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#ifdef NEED_HPUX_MUTEX

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# define NSS_DB_ROOT_INIT		{ 0, LWP_MUTEX_INITIALIZER }

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#else

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# define NSS_DB_ROOT_INIT		{ 0 }

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#endif

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#define DEFINE_NSS_DB_ROOT(name)	nss_db_root_t name = NSS_DB_ROOT_INIT

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/* Backend function to find all groups a user belongs to for initgroups(). */

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#define NSS_DBOP_GROUP_BYMEMBER		6

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/* str2ent function return values */

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#define NSS_STR_PARSE_SUCCESS	0

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#define NSS_STR_PARSE_PARSE	1

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#define NSS_STR_PARSE_ERANGE	2

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/* Max length for an /etc/group file line. */

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#define NSS_BUFLEN_GROUP		8192

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/* HP-UX uses an extra underscore for these functions. */

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#ifdef HAVE___NSS_INITF_GROUP

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# define _nss_initf_group       __nss_initf_group

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#endif

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#ifdef HAVE___NSS_XBYY_BUF_ALLOC

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# define _nss_XbyY_buf_alloc    __nss_XbyY_buf_alloc

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# define _nss_XbyY_buf_free     __nss_XbyY_buf_free

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#endif

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typedef void (*nss_db_initf_t)(nss_db_params_t *);

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extern nss_status_t nss_search(nss_db_root_t *, nss_db_initf_t, int search_fnum, void *search_args);

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extern nss_XbyY_buf_t *_nss_XbyY_buf_alloc(int struct_size, int buffer_size);

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extern void _nss_XbyY_buf_free(nss_XbyY_buf_t *);

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#endif /* COMPAT_NSS_DBDEFS_H */

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