205 lines
4.2 KiB
C
205 lines
4.2 KiB
C
/*-
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* Copyright (C) 1996
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* David L. Nugent. 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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*
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* THIS SOFTWARE IS PROVIDED BY DAVID L. NUGENT AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL DAVID L. NUGENT OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*/
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#ifndef lint
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static const char rcsid[] =
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"$FreeBSD$";
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#endif /* not lint */
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#include <pwd.h>
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#include <grp.h>
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#include <libutil.h>
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#define _WITH_GETLINE
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <err.h>
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#include "pwupd.h"
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static FILE * pwd_fp = NULL;
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void
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vendpwent(void)
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{
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if (pwd_fp != NULL) {
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fclose(pwd_fp);
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pwd_fp = NULL;
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}
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}
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void
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vsetpwent(void)
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{
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vendpwent();
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}
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static struct passwd *
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vnextpwent(char const *nam, uid_t uid, int doclose)
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{
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struct passwd *pw;
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char *line;
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size_t linecap;
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ssize_t linelen;
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pw = NULL;
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line = NULL;
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linecap = 0;
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if (pwd_fp != NULL || (pwd_fp = fopen(getpwpath(_MASTERPASSWD), "r")) != NULL) {
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while ((linelen = getline(&line, &linecap, pwd_fp)) > 0) {
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/* Skip comments and empty lines */
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if (*line == '\n' || *line == '#')
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continue;
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/* trim latest \n */
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if (line[linelen - 1 ] == '\n')
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line[linelen - 1] = '\0';
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pw = pw_scan(line, PWSCAN_MASTER);
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if (pw == NULL)
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errx(EXIT_FAILURE, "Invalid user entry in '%s':"
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" '%s'", getpwpath(_MASTERPASSWD), line);
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if (uid != (uid_t)-1) {
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if (uid == pw->pw_uid)
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break;
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} else if (nam != NULL) {
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if (strcmp(nam, pw->pw_name) == 0)
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break;
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} else
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break;
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free(pw);
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pw = NULL;
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}
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if (doclose)
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vendpwent();
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}
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free(line);
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return (pw);
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}
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struct passwd *
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vgetpwent(void)
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{
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return vnextpwent(NULL, -1, 0);
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}
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struct passwd *
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vgetpwuid(uid_t uid)
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{
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return vnextpwent(NULL, uid, 1);
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}
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struct passwd *
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vgetpwnam(const char * nam)
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{
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return vnextpwent(nam, -1, 1);
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}
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static FILE * grp_fp = NULL;
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void
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vendgrent(void)
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{
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if (grp_fp != NULL) {
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fclose(grp_fp);
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grp_fp = NULL;
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}
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}
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RET_SETGRENT
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vsetgrent(void)
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{
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vendgrent();
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#if defined(__FreeBSD__)
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return 0;
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#endif
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}
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static struct group *
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vnextgrent(char const *nam, gid_t gid, int doclose)
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{
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struct group *gr;
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char *line;
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size_t linecap;
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ssize_t linelen;
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gr = NULL;
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line = NULL;
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linecap = 0;
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if (grp_fp != NULL || (grp_fp = fopen(getgrpath(_GROUP), "r")) != NULL) {
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while ((linelen = getline(&line, &linecap, grp_fp)) > 0) {
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/* Skip comments and empty lines */
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if (*line == '\n' || *line == '#')
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continue;
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/* trim latest \n */
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if (line[linelen - 1 ] == '\n')
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line[linelen - 1] = '\0';
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gr = gr_scan(line);
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if (gr == NULL)
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errx(EXIT_FAILURE, "Invalid group entry in '%s':"
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" '%s'", getgrpath(_GROUP), line);
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if (gid != (gid_t)-1) {
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if (gid == gr->gr_gid)
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break;
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} else if (nam != NULL) {
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if (strcmp(nam, gr->gr_name) == 0)
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break;
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} else
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break;
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free(gr);
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gr = NULL;
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}
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if (doclose)
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vendgrent();
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}
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free(line);
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return (gr);
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}
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struct group *
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vgetgrent(void)
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{
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return vnextgrent(NULL, -1, 0);
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}
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struct group *
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vgetgrgid(gid_t gid)
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{
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return vnextgrent(NULL, gid, 1);
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}
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struct group *
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vgetgrnam(const char * nam)
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{
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return vnextgrent(nam, -1, 1);
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}
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