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/*
* Copyright (c) 1998-1999 by Internet Software Consortium.
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
* ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
* CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
* ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
* SOFTWARE.
*/
#if defined(LIBC_SCCS) && !defined(lint)
static const char rcsid[] = "$Id: getgrent_r.c,v 8.7 2001/11/01 08:02:08 marka Exp $";
#endif /* LIBC_SCCS and not lint */
#include <port_before.h>
#if !defined(_REENTRANT) || !defined(DO_PTHREADS) || !defined(WANT_IRS_PW)
static int getgrent_r_not_required = 0;
#else
#include <errno.h>
#include <string.h>
#include <stdio.h>
#include <sys/types.h>
#if (defined(POSIX_GETGRNAM_R) || defined(POSIX_GETGRGID_R)) && \
defined(_POSIX_PTHREAD_SEMANTICS)
/* turn off solaris remapping in <grp.h> */
#define _UNIX95
#undef _POSIX_PTHREAD_SEMANTICS
#include <grp.h>
#define _POSIX_PTHREAD_SEMANTICS 1
#else
#include <grp.h>
#endif
#include <sys/param.h>
#include <port_after.h>
#ifdef GROUP_R_RETURN
static int
copy_group(struct group *, struct group *, char *buf, int buflen);
/* POSIX 1003.1c */
#ifdef POSIX_GETGRNAM_R
int
__posix_getgrnam_r(const char *name, struct group *gptr,
char *buf, int buflen, struct group **result) {
#else
int
getgrnam_r(const char *name, struct group *gptr,
char *buf, size_t buflen, struct group **result) {
#endif
struct group *ge = getgrnam(name);
int res;
if (ge == NULL) {
*result = NULL;
return (0);
}
res = copy_group(ge, gptr, buf, buflen);
*result = res ? NULL : gptr;
return (res);
}
#ifdef POSIX_GETGRNAM_R
struct group *
getgrnam_r(const char *name, struct group *gptr,
char *buf, int buflen) {
struct group *ge = getgrnam(name);
int res;
if (ge == NULL)
return (NULL);
res = copy_group(ge, gptr, buf, buflen);
return (res ? NULL : gptr);
}
#endif /* POSIX_GETGRNAM_R */
/* POSIX 1003.1c */
#ifdef POSIX_GETGRGID_R
int
__posix_getgrgid_r(gid_t gid, struct group *gptr,
char *buf, int buflen, struct group **result) {
#else /* POSIX_GETGRGID_R */
int
getgrgid_r(gid_t gid, struct group *gptr,
char *buf, size_t buflen, struct group **result) {
#endif /* POSIX_GETGRGID_R */
struct group *ge = getgrgid(gid);
int res;
if (ge == NULL) {
*result = NULL;
return (0);
}
res = copy_group(ge, gptr, buf, buflen);
*result = res ? NULL : gptr;
return (res);
}
#ifdef POSIX_GETGRGID_R
struct group *
getgrgid_r(gid_t gid, struct group *gptr,
char *buf, int buflen) {
struct group *ge = getgrgid(gid);
int res;
if (ge == NULL)
return (NULL);
res = copy_group(ge, gptr, buf, buflen);
return (res ? NULL : gptr);
}
#endif
/*
* These assume a single context is in operation per thread.
* If this is not the case we will need to call irs directly
* rather than through the base functions.
*/
GROUP_R_RETURN
getgrent_r(struct group *gptr, GROUP_R_ARGS) {
struct group *ge = getgrent();
int res;
if (ge == NULL) {
return (GROUP_R_BAD);
}
res = copy_group(ge, gptr, buf, buflen);
return (res ? GROUP_R_BAD : GROUP_R_OK);
}
GROUP_R_SET_RETURN
setgrent_r(GROUP_R_ENT_ARGS) {
setgrent();
#ifdef GROUP_R_SET_RESULT
return (GROUP_R_SET_RESULT);
#endif
}
GROUP_R_END_RETURN
endgrent_r(GROUP_R_ENT_ARGS) {
endgrent();
GROUP_R_END_RESULT(GROUP_R_OK);
}
#if 0
/* XXX irs does not have a fgetgrent() */
GROUP_R_RETURN
fgetgrent_r(FILE *f, struct group *gptr, GROUP_R_ARGS) {
struct group *ge = fgetgrent(f);
int res;
if (ge == NULL)
return (GROUP_R_BAD);
res = copy_group(ge, gptr, buf, buflen);
return (res ? GROUP_R_BAD : GROUP_R_OK);
}
#endif
/* Private */
static int
copy_group(struct group *ge, struct group *gptr, char *buf, int buflen) {
char *cp;
int i, n;
int numptr, len;
/* Find out the amount of space required to store the answer. */
numptr = 1; /* NULL ptr */
len = (char *)ALIGN(buf) - buf;
for (i = 0; ge->gr_mem[i]; i++, numptr++) {
len += strlen(ge->gr_mem[i]) + 1;
}
len += strlen(ge->gr_name) + 1;
len += strlen(ge->gr_passwd) + 1;
len += numptr * sizeof(char*);
if (len > buflen) {
errno = ERANGE;
return (ERANGE);
}
/* copy group id */
gptr->gr_gid = ge->gr_gid;
cp = (char *)ALIGN(buf) + numptr * sizeof(char *);
/* copy official name */
n = strlen(ge->gr_name) + 1;
strcpy(cp, ge->gr_name);
gptr->gr_name = cp;
cp += n;
/* copy member list */
gptr->gr_mem = (char **)ALIGN(buf);
for (i = 0 ; ge->gr_mem[i]; i++) {
n = strlen(ge->gr_mem[i]) + 1;
strcpy(cp, ge->gr_mem[i]);
gptr->gr_mem[i] = cp;
cp += n;
}
gptr->gr_mem[i] = NULL;
/* copy password */
n = strlen(ge->gr_passwd) + 1;
strcpy(cp, ge->gr_passwd);
gptr->gr_passwd = cp;
cp += n;
return (0);
}
#else /* GROUP_R_RETURN */
static int getgrent_r_unknown_system = 0;
#endif /* GROUP_R_RETURN */
#endif /* !def(_REENTRANT) || !def(DO_PTHREADS) || !def(WANT_IRS_PW) */
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