946 lines
26 KiB
C
946 lines
26 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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* $Id: pw_user.c,v 1.2 1996/12/11 15:10:47 joerg Exp $
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*/
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#include <unistd.h>
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#include <fcntl.h>
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#include <ctype.h>
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#include <paths.h>
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#include <sys/param.h>
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#include <dirent.h>
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#include <termios.h>
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#include <sys/types.h>
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#include <sys/time.h>
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#include <sys/resource.h>
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#include <md5.h>
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#include "pw.h"
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#include "bitmap.h"
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#include "pwupd.h"
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static int print_user(struct passwd * pwd, int pretty);
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static uid_t pw_uidpolicy(struct userconf * cnf, struct cargs * args);
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static uid_t pw_gidpolicy(struct userconf * cnf, struct cargs * args, char *nam, gid_t prefer);
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static time_t pw_pwdpolicy(struct userconf * cnf, struct cargs * args);
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static time_t pw_exppolicy(struct userconf * cnf, struct cargs * args);
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static char *pw_homepolicy(struct userconf * cnf, struct cargs * args, char const * user);
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static char *pw_shellpolicy(struct userconf * cnf, struct cargs * args, char *newshell);
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static char *pw_password(struct userconf * cnf, struct cargs * args, char const * user);
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static char *pw_checkname(char *name, int gecos);
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static char *shell_path(char const * path, char *shells[], char *sh);
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static void rmat(uid_t uid);
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/*-
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* -C config configuration file
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* -q quiet operation
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* -n name login name
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* -u uid user id
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* -c comment user name/comment
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* -d directory home directory
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* -e date account expiry date
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* -p date password expiry date
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* -g grp primary group
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* -G grp1,grp2 additional groups
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* -m [ -k dir ] create and set up home
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* -s shell name of login shell
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* -o duplicate uid ok
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* -L class user class
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* -l name new login name
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* -h fd password filehandle
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* -F force print or add
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* Setting defaults:
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* -D set user defaults
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* -b dir default home root dir
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* -e period default expiry period
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* -p period default password change period
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* -g group default group
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* -G grp1,grp2.. default additional groups
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* -L class default login class
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* -k dir default home skeleton
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* -s shell default shell
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* -w method default password method
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*/
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int
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pw_user(struct userconf * cnf, int mode, struct cargs * args)
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{
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char *p = NULL;
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struct carg *a_name;
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struct carg *a_uid;
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struct carg *arg;
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struct passwd *pwd = NULL;
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struct group *grp;
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struct stat st;
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char line[MAXPWLINE];
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static struct passwd fakeuser =
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{
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NULL,
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"*",
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-1,
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-1,
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0,
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"",
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"User &",
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"/bin/sh",
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0,
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0
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};
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/*
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* With M_NEXT, we only need to return the
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* next uid to stdout
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*/
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if (mode == M_NEXT)
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{
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uid_t next = pw_uidpolicy(cnf, args);
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if (getarg(args, 'q'))
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return next;
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printf("%ld:", (long)next);
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pw_group(cnf, mode, args);
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return EXIT_SUCCESS;
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}
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/*
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* We can do all of the common legwork here
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*/
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if ((arg = getarg(args, 'b')) != NULL) {
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cnf->home = arg->val;
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if (stat(cnf->home, &st) == -1 || !S_ISDIR(st.st_mode))
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cmderr(EX_OSFILE, "root home `%s' is not a directory or does not exist\n", cnf->home);
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}
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if ((arg = getarg(args, 'e')) != NULL)
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cnf->expire_days = atoi(arg->val);
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if ((arg = getarg(args, 'p')) != NULL && arg->val)
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cnf->password_days = atoi(arg->val);
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if ((arg = getarg(args, 'g')) != NULL) {
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p = arg->val;
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if ((grp = getgrnam(p)) == NULL) {
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if (!isdigit(*p) || (grp = getgrgid((gid_t) atoi(p))) == NULL)
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cmderr(EX_NOUSER, "group `%s' does not exist\n", p);
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}
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cnf->default_group = newstr(grp->gr_name);
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}
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if ((arg = getarg(args, 'L')) != NULL)
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cnf->default_class = pw_checkname(arg->val, 0);
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if ((arg = getarg(args, 'G')) != NULL && arg->val) {
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int i = 0;
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for (p = strtok(arg->val, ", \t"); i < _UC_MAXGROUPS && p != NULL; p = strtok(NULL, ", \t")) {
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if ((grp = getgrnam(p)) == NULL) {
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if (!isdigit(*p) || (grp = getgrgid((gid_t) atoi(p))) == NULL)
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cmderr(EX_NOUSER, "group `%s' does not exist\n", p);
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}
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cnf->groups[i++] = newstr(grp->gr_name);
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}
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while (i < _UC_MAXGROUPS)
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cnf->groups[i++] = NULL;
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}
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if ((arg = getarg(args, 'k')) != NULL) {
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if (stat(cnf->dotdir = arg->val, &st) == -1 || S_ISDIR(st.st_mode))
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cmderr(EX_OSFILE, "skeleton `%s' is not a directory or does not exist\n", cnf->dotdir);
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}
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if ((arg = getarg(args, 's')) != NULL)
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cnf->shell_default = arg->val;
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if (mode == M_ADD && getarg(args, 'D')) {
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if (getarg(args, 'n') != NULL)
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cmderr(EX_DATAERR, "can't combine `-D' with `-n name'\n");
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if ((arg = getarg(args, 'u')) != NULL && (p = strtok(arg->val, ", \t")) != NULL) {
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if ((cnf->min_uid = (uid_t) atoi(p)) == 0)
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cnf->min_uid = 1000;
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if ((p = strtok(NULL, " ,\t")) == NULL || (cnf->max_uid = (uid_t) atoi(p)) < cnf->min_uid)
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cnf->max_uid = 32000;
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}
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if ((arg = getarg(args, 'i')) != NULL && (p = strtok(arg->val, ", \t")) != NULL) {
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if ((cnf->min_gid = (gid_t) atoi(p)) == 0)
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cnf->min_gid = 1000;
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if ((p = strtok(NULL, " ,\t")) == NULL || (cnf->max_gid = (gid_t) atoi(p)) < cnf->min_gid)
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cnf->max_gid = 32000;
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}
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if ((arg = getarg(args, 'w')) != NULL)
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cnf->default_password = boolean_val(arg->val, cnf->default_password);
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arg = getarg(args, 'C');
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if (write_userconfig(arg ? arg->val : NULL))
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return EXIT_SUCCESS;
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perror("config update");
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return EX_IOERR;
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}
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if (mode == M_PRINT && getarg(args, 'a')) {
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int pretty = getarg(args, 'P') != NULL;
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setpwent();
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while ((pwd = getpwent()) != NULL)
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print_user(pwd, pretty);
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endpwent();
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return EXIT_SUCCESS;
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}
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if ((a_name = getarg(args, 'n')) != NULL)
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pwd = getpwnam(pw_checkname(a_name->val, 0));
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a_uid = getarg(args, 'u');
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if (a_uid == NULL) {
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if (a_name == NULL)
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cmderr(EX_DATAERR, "user name or id required\n");
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/*
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* Determine whether 'n' switch is name or uid - we don't
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* really don't really care which we have, but we need to
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* know.
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*/
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if (mode != M_ADD && pwd == NULL && isdigit(*a_name->val) && atoi(a_name->val) > 0) { /* Assume uid */
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(a_uid = a_name)->ch = 'u';
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a_name = NULL;
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}
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}
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/*
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* Update, delete & print require that the user exists
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*/
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if (mode == M_UPDATE || mode == M_DELETE || mode == M_PRINT) {
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if (a_name == NULL && pwd == NULL) /* Try harder */
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pwd = getpwuid(atoi(a_uid->val));
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if (pwd == NULL) {
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if (mode == M_PRINT && getarg(args, 'F')) {
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fakeuser.pw_name = a_name ? a_name->val : "nouser";
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fakeuser.pw_uid = a_uid ? (uid_t) atol(a_uid->val) : -1;
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return print_user(&fakeuser, getarg(args, 'P') != NULL);
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}
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if (a_name == NULL)
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cmderr(EX_NOUSER, "no such uid `%s'\n", a_uid->val);
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cmderr(EX_NOUSER, "no such user `%s'\n", a_name->val);
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}
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if (a_name == NULL) /* May be needed later */
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a_name = addarg(args, 'n', newstr(pwd->pw_name));
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/*
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* Handle deletions now
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*/
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if (mode == M_DELETE) {
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char file[MAXPATHLEN];
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char home[MAXPATHLEN];
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uid_t uid = pwd->pw_uid;
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if (strcmp(pwd->pw_name, "root") == 0)
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cmderr(EX_DATAERR, "cannot remove user 'root'\n");
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/*
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* Remove crontabs
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*/
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sprintf(file, "/var/cron/tabs/%s", pwd->pw_name);
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if (access(file, F_OK) == 0) {
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sprintf(file, "crontab -u %s -r", pwd->pw_name);
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system(file);
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}
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/*
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* Save these for later, since contents of pwd may be
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* invalidated by deletion
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*/
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sprintf(file, "%s/%s", _PATH_MAILDIR, pwd->pw_name);
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strncpy(home, pwd->pw_dir, sizeof home);
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home[sizeof home - 1] = '\0';
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if (!delpwent(pwd))
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cmderr(EX_IOERR, "Error updating passwd file: %s\n", strerror(errno));
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editgroups(a_name->val, NULL);
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pw_log(cnf, mode, W_USER, "%s(%ld) account removed", a_name->val, (long) uid);
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/*
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* Remove mail file
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*/
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remove(file);
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/*
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* Remove at jobs
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*/
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if (getpwuid(uid) == NULL)
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rmat(uid);
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/*
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* Remove home directory and contents
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*/
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if (getarg(args, 'r') != NULL && *home == '/' && getpwuid(uid) == NULL) {
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if (stat(home, &st) != -1) {
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rm_r(home, uid);
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pw_log(cnf, mode, W_USER, "%s(%ld) home '%s' %sremoved",
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a_name->val, (long) uid, home,
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stat(home, &st) == -1 ? "" : "not completely ");
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}
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}
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return EXIT_SUCCESS;
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} else if (mode == M_PRINT)
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return print_user(pwd, getarg(args, 'P') != NULL);
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/*
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* The rest is edit code
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*/
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if ((arg = getarg(args, 'l')) != NULL) {
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if (strcmp(pwd->pw_name, "root") == 0)
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cmderr(EX_DATAERR, "can't rename `root' account\n");
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pwd->pw_name = pw_checkname(arg->val, 0);
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}
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if ((arg = getarg(args, 'u')) != NULL && isdigit(*arg->val)) {
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pwd->pw_uid = (uid_t) atol(arg->val);
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if (pwd->pw_uid != 0 && strcmp(pwd->pw_name, "root") == 0)
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cmderr(EX_DATAERR, "can't change uid of `root' account\n");
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if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0)
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fprintf(stderr, "WARNING: account `%s' will have a uid of 0 (superuser access!)\n", pwd->pw_name);
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}
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if ((arg = getarg(args, 'g')) != NULL && pwd->pw_uid != 0) /* Already checked this */
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pwd->pw_gid = (gid_t) getgrnam(cnf->default_group)->gr_gid;
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if ((arg = getarg(args, 'p')) != NULL) {
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if (*arg->val == '\0' || strcmp(arg->val, "0") == 0)
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pwd->pw_change = 0;
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else {
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time_t now = time(NULL);
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time_t expire = parse_date(now, arg->val);
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if (now == expire)
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cmderr(EX_DATAERR, "Invalid password change date `%s'\n", arg->val);
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pwd->pw_change = expire;
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}
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}
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if ((arg = getarg(args, 'e')) != NULL) {
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if (*arg->val == '\0' || strcmp(arg->val, "0") == 0)
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pwd->pw_expire = 0;
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else {
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time_t now = time(NULL);
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time_t expire = parse_date(now, arg->val);
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if (now == expire)
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cmderr(EX_DATAERR, "Invalid account expiry date `%s'\n", arg->val);
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pwd->pw_expire = expire;
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}
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}
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if ((arg = getarg(args, 's')) != NULL)
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pwd->pw_shell = shell_path(cnf->shelldir, cnf->shells, arg->val);
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if (getarg(args, 'L'))
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pwd->pw_class = cnf->default_class;
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if ((arg = getarg(args, 'w')) != NULL && getarg(args, 'h') == NULL)
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pwd->pw_passwd = pw_password(cnf, args, pwd->pw_name);
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} else {
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if (a_name == NULL) /* Required */
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cmderr(EX_DATAERR, "login name required\n");
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else if ((pwd = getpwnam(a_name->val)) != NULL) /* Exists */
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cmderr(EX_DATAERR, "login name `%s' already exists\n", a_name->val);
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/*
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* Now, set up defaults for a new user
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*/
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pwd = &fakeuser;
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pwd->pw_name = a_name->val;
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pwd->pw_class = cnf->default_class ? cnf->default_class : "";
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pwd->pw_passwd = pw_password(cnf, args, pwd->pw_name);
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pwd->pw_uid = pw_uidpolicy(cnf, args);
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pwd->pw_gid = pw_gidpolicy(cnf, args, pwd->pw_name, (gid_t) pwd->pw_uid);
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pwd->pw_change = pw_pwdpolicy(cnf, args);
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pwd->pw_expire = pw_exppolicy(cnf, args);
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pwd->pw_dir = pw_homepolicy(cnf, args, pwd->pw_name);
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pwd->pw_shell = pw_shellpolicy(cnf, args, NULL);
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if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0)
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fprintf(stderr, "WARNING: new account `%s' has a uid of 0 (superuser access!)\n", pwd->pw_name);
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}
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/*
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* Shared add/edit code
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*/
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if ((arg = getarg(args, 'c')) != NULL)
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pwd->pw_gecos = pw_checkname(arg->val, 1);
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if ((arg = getarg(args, 'h')) != NULL) {
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if (strcmp(arg->val, "-") == 0)
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pwd->pw_passwd = "*"; /* No access */
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else {
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int fd = atoi(arg->val);
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int b;
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int istty = isatty(fd);
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struct termios t;
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if (istty) {
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if (tcgetattr(fd, &t) == -1)
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istty = 0;
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else {
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struct termios n = t;
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/* Disable echo */
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n.c_lflag &= ~(ECHO);
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tcsetattr(fd, TCSANOW, &n);
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printf("%sassword for user %s:", (mode == M_UPDATE) ? "New p" : "P", pwd->pw_name);
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fflush(stdout);
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}
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}
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b = read(fd, line, sizeof(line) - 1);
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if (istty) { /* Restore state */
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tcsetattr(fd, TCSANOW, &t);
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fputc('\n', stdout);
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fflush(stdout);
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}
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if (b < 0) {
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perror("-h file descriptor");
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return EX_IOERR;
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}
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line[b] = '\0';
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if ((p = strpbrk(line, " \t\r\n")) != NULL)
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*p = '\0';
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if (!*line)
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cmderr(EX_DATAERR, "empty password read on file descriptor %d\n", fd);
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pwd->pw_passwd = pw_pwcrypt(line);
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}
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}
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/*
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* Special case: -N only displays & exits
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*/
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if (getarg(args, 'N') != NULL)
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return print_user(pwd, getarg(args, 'P') != NULL);
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if ((mode == M_ADD && !addpwent(pwd)) ||
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(mode == M_UPDATE && !chgpwent(a_name->val, pwd))) {
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perror("password update");
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return EX_IOERR;
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}
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/*
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* Ok, user is created or changed - now edit group file
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*/
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if (mode == M_ADD || getarg(args, 'G') != NULL)
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editgroups(pwd->pw_name, cnf->groups);
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/* pwd may have been invalidated */
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if ((pwd = getpwnam(a_name->val)) == NULL)
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cmderr(EX_NOUSER, "user '%s' disappeared during update\n", a_name->val);
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grp = getgrgid(pwd->pw_gid);
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pw_log(cnf, mode, W_USER, "%s(%ld):%s(%d):%s:%s:%s",
|
|
pwd->pw_name, (long) pwd->pw_uid,
|
|
grp ? grp->gr_name : "unknown", (long) (grp ? grp->gr_gid : -1),
|
|
pwd->pw_gecos, pwd->pw_dir, pwd->pw_shell);
|
|
|
|
/*
|
|
* If adding, let's touch and chown the user's mail file. This is not
|
|
* strictly necessary under BSD with a 0755 maildir but it also
|
|
* doesn't hurt anything to create the empty mailfile
|
|
*/
|
|
if (mode == M_ADD) {
|
|
FILE *fp;
|
|
|
|
sprintf(line, "%s/%s", _PATH_MAILDIR, pwd->pw_name);
|
|
close(open(line, O_RDWR | O_CREAT, 0600)); /* Preserve contents &
|
|
* mtime */
|
|
chown(line, pwd->pw_uid, pwd->pw_gid);
|
|
|
|
/*
|
|
* Send mail to the new user as well, if we are asked to
|
|
*/
|
|
if (cnf->newmail && *cnf->newmail && (fp = fopen(cnf->newmail, "r")) != NULL) {
|
|
FILE *pfp = popen(_PATH_SENDMAIL " -t", "w");
|
|
|
|
if (pfp == NULL)
|
|
perror("sendmail");
|
|
else {
|
|
fprintf(pfp, "From: root\n" "To: %s\n" "Subject: Welcome!\n\n", pwd->pw_name);
|
|
while (fgets(line, sizeof(line), fp) != NULL) {
|
|
/* Do substitutions? */
|
|
fputs(line, pfp);
|
|
}
|
|
pclose(pfp);
|
|
pw_log(cnf, mode, W_USER, "%s(%ld) new user mail sent",
|
|
pwd->pw_name, (long) pwd->pw_uid);
|
|
}
|
|
fclose(fp);
|
|
}
|
|
}
|
|
/*
|
|
* Finally, let's create and populate the user's home directory. Note
|
|
* that this also `works' for editing users if -m is used, but
|
|
* existing files will *not* be overwritten.
|
|
*/
|
|
if (getarg(args, 'm') != NULL && pwd->pw_dir && *pwd->pw_dir == '/' && pwd->pw_dir[1]) {
|
|
copymkdir(pwd->pw_dir, cnf->dotdir, 0755, pwd->pw_uid, pwd->pw_gid);
|
|
pw_log(cnf, mode, W_USER, "%s(%ld) home %s made",
|
|
pwd->pw_name, (long) pwd->pw_uid, pwd->pw_dir);
|
|
}
|
|
return EXIT_SUCCESS;
|
|
}
|
|
|
|
|
|
static uid_t
|
|
pw_uidpolicy(struct userconf * cnf, struct cargs * args)
|
|
{
|
|
struct passwd *pwd;
|
|
uid_t uid = (uid_t) - 1;
|
|
struct carg *a_uid = getarg(args, 'u');
|
|
|
|
/*
|
|
* Check the given uid, if any
|
|
*/
|
|
if (a_uid != NULL) {
|
|
uid = (uid_t) atol(a_uid->val);
|
|
|
|
if ((pwd = getpwuid(uid)) != NULL && getarg(args, 'o') == NULL)
|
|
cmderr(EX_DATAERR, "uid `%ld' has already been allocated\n", (long) pwd->pw_uid);
|
|
} else {
|
|
struct bitmap bm;
|
|
|
|
/*
|
|
* We need to allocate the next available uid under one of
|
|
* two policies a) Grab the first unused uid b) Grab the
|
|
* highest possible unused uid
|
|
*/
|
|
if (cnf->min_uid >= cnf->max_uid) { /* Sanity
|
|
* claus^H^H^H^Hheck */
|
|
cnf->min_uid = 1000;
|
|
cnf->max_uid = 32000;
|
|
}
|
|
bm = bm_alloc(cnf->max_uid - cnf->min_uid + 1);
|
|
|
|
/*
|
|
* Now, let's fill the bitmap from the password file
|
|
*/
|
|
setpwent();
|
|
while ((pwd = getpwent()) != NULL)
|
|
if (pwd->pw_uid >= (int) cnf->min_uid && pwd->pw_uid <= (int) cnf->max_uid)
|
|
bm_setbit(&bm, pwd->pw_uid - cnf->min_uid);
|
|
endpwent();
|
|
|
|
/*
|
|
* Then apply the policy, with fallback to reuse if necessary
|
|
*/
|
|
if (cnf->reuse_uids || (uid = (uid_t) (bm_lastset(&bm) + cnf->min_uid + 1)) > cnf->max_uid)
|
|
uid = (uid_t) (bm_firstunset(&bm) + cnf->min_uid);
|
|
|
|
/*
|
|
* Another sanity check
|
|
*/
|
|
if (uid < cnf->min_uid || uid > cnf->max_uid)
|
|
cmderr(EX_SOFTWARE, "unable to allocate a new uid - range fully used\n");
|
|
bm_dealloc(&bm);
|
|
}
|
|
return uid;
|
|
}
|
|
|
|
|
|
static uid_t
|
|
pw_gidpolicy(struct userconf * cnf, struct cargs * args, char *nam, gid_t prefer)
|
|
{
|
|
struct group *grp;
|
|
gid_t gid = (uid_t) - 1;
|
|
struct carg *a_gid = getarg(args, 'g');
|
|
|
|
/*
|
|
* If no arg given, see if default can help out
|
|
*/
|
|
if (a_gid == NULL && cnf->default_group && *cnf->default_group)
|
|
a_gid = addarg(args, 'g', cnf->default_group);
|
|
|
|
/*
|
|
* Check the given gid, if any
|
|
*/
|
|
setgrent();
|
|
if (a_gid != NULL) {
|
|
if ((grp = getgrnam(a_gid->val)) == NULL) {
|
|
gid = (gid_t) atol(a_gid->val);
|
|
if ((gid == 0 && !isdigit(*a_gid->val)) || (grp = getgrgid(gid)) == NULL)
|
|
cmderr(EX_NOUSER, "group `%s' is not defined\n", a_gid->val);
|
|
}
|
|
gid = grp->gr_gid;
|
|
} else if ((grp = getgrnam(nam)) != NULL && grp->gr_mem[0] == NULL) {
|
|
gid = grp->gr_gid; /* Already created? Use it anyway... */
|
|
} else {
|
|
struct cargs grpargs;
|
|
char tmp[32];
|
|
|
|
LIST_INIT(&grpargs);
|
|
addarg(&grpargs, 'n', nam);
|
|
|
|
/*
|
|
* We need to auto-create a group with the user's name. We
|
|
* can send all the appropriate output to our sister routine
|
|
* bit first see if we can create a group with gid==uid so we
|
|
* can keep the user and group ids in sync. We purposely do
|
|
* NOT check the gid range if we can force the sync. If the
|
|
* user's name dups an existing group, then the group add
|
|
* function will happily handle that case for us and exit.
|
|
*/
|
|
if (getgrgid(prefer) == NULL) {
|
|
sprintf(tmp, "%lu", (unsigned long) prefer);
|
|
addarg(&grpargs, 'g', tmp);
|
|
}
|
|
if (getarg(args, 'N'))
|
|
{
|
|
addarg(&grpargs, 'N', NULL);
|
|
addarg(&grpargs, 'q', NULL);
|
|
gid = pw_group(cnf, M_NEXT, &grpargs);
|
|
}
|
|
else
|
|
{
|
|
pw_group(cnf, M_ADD, &grpargs);
|
|
if ((grp = getgrnam(nam)) != NULL)
|
|
gid = grp->gr_gid;
|
|
}
|
|
a_gid = grpargs.lh_first;
|
|
while (a_gid != NULL) {
|
|
struct carg *t = a_gid->list.le_next;
|
|
LIST_REMOVE(a_gid, list);
|
|
a_gid = t;
|
|
}
|
|
}
|
|
endgrent();
|
|
return gid;
|
|
}
|
|
|
|
|
|
static time_t
|
|
pw_pwdpolicy(struct userconf * cnf, struct cargs * args)
|
|
{
|
|
time_t result = 0;
|
|
time_t now = time(NULL);
|
|
struct carg *arg = getarg(args, 'e');
|
|
|
|
if (arg != NULL) {
|
|
if ((result = parse_date(now, arg->val)) == now)
|
|
cmderr(EX_DATAERR, "invalid date/time `%s'\n", arg->val);
|
|
} else if (cnf->password_days > 0)
|
|
result = now + ((long) cnf->password_days * 86400L);
|
|
return result;
|
|
}
|
|
|
|
|
|
static time_t
|
|
pw_exppolicy(struct userconf * cnf, struct cargs * args)
|
|
{
|
|
time_t result = 0;
|
|
time_t now = time(NULL);
|
|
struct carg *arg = getarg(args, 'e');
|
|
|
|
if (arg != NULL) {
|
|
if ((result = parse_date(now, arg->val)) == now)
|
|
cmderr(EX_DATAERR, "invalid date/time `%s'\n", arg->val);
|
|
} else if (cnf->expire_days > 0)
|
|
result = now + ((long) cnf->expire_days * 86400L);
|
|
return result;
|
|
}
|
|
|
|
|
|
static char *
|
|
pw_homepolicy(struct userconf * cnf, struct cargs * args, char const * user)
|
|
{
|
|
struct carg *arg = getarg(args, 'd');
|
|
|
|
if (arg)
|
|
return arg->val;
|
|
else {
|
|
static char home[128];
|
|
|
|
if (cnf->home == NULL || *cnf->home == '\0')
|
|
cmderr(EX_CONFIG, "no base home directory set\n");
|
|
sprintf(home, "%s/%s", cnf->home, user);
|
|
return home;
|
|
}
|
|
}
|
|
|
|
static char *
|
|
shell_path(char const * path, char *shells[], char *sh)
|
|
{
|
|
if (sh != NULL && (*sh == '/' || *sh == '\0'))
|
|
return sh; /* specified full path or forced none */
|
|
else {
|
|
char *p;
|
|
char paths[_UC_MAXLINE];
|
|
|
|
/*
|
|
* We need to search paths
|
|
*/
|
|
strncpy(paths, path, sizeof paths);
|
|
paths[sizeof paths - 1] = '\0';
|
|
for (p = strtok(paths, ": \t\r\n"); p != NULL; p = strtok(NULL, ": \t\r\n")) {
|
|
int i;
|
|
static char shellpath[256];
|
|
|
|
if (sh != NULL) {
|
|
sprintf(shellpath, "%s/%s", p, sh);
|
|
if (access(shellpath, X_OK) == 0)
|
|
return shellpath;
|
|
} else
|
|
for (i = 0; i < _UC_MAXSHELLS && shells[i] != NULL; i++) {
|
|
sprintf(shellpath, "%s/%s", p, shells[i]);
|
|
if (access(shellpath, X_OK) == 0)
|
|
return shellpath;
|
|
}
|
|
}
|
|
if (sh == NULL)
|
|
cmderr(EX_OSFILE, "can't find shell `%s' in shell paths\n", sh);
|
|
cmderr(EX_CONFIG, "no default shell available or defined\n");
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
|
|
static char *
|
|
pw_shellpolicy(struct userconf * cnf, struct cargs * args, char *newshell)
|
|
{
|
|
char *sh = newshell;
|
|
struct carg *arg = getarg(args, 's');
|
|
|
|
if (newshell == NULL && arg != NULL)
|
|
sh = arg->val;
|
|
return shell_path(cnf->shelldir, cnf->shells, sh ? sh : cnf->shell_default);
|
|
}
|
|
|
|
static char const chars[] = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ.";
|
|
|
|
char *
|
|
pw_pwcrypt(char *password)
|
|
{
|
|
int i;
|
|
char salt[12];
|
|
|
|
static char buf[256];
|
|
|
|
/*
|
|
* Calculate a salt value
|
|
*/
|
|
srandom((unsigned) (time(NULL) ^ getpid()));
|
|
for (i = 0; i < 8; i++)
|
|
salt[i] = chars[random() % 63];
|
|
salt[i] = '\0';
|
|
|
|
return strcpy(buf, crypt(password, salt));
|
|
}
|
|
|
|
u_char *
|
|
pw_genmd5rand (u_char *d) /* cryptographically secure rng */
|
|
{
|
|
MD5_CTX md5_ctx;
|
|
struct timeval tv, tvo;
|
|
struct rusage ru;
|
|
int n=0;
|
|
int t;
|
|
MD5Init (&md5_ctx);
|
|
t=getpid();
|
|
MD5Update (&md5_ctx, (u_char*)&t, sizeof t);
|
|
t=getppid();
|
|
MD5Update (&md5_ctx, (u_char*)&t, sizeof t);
|
|
gettimeofday (&tvo, NULL);
|
|
do {
|
|
getrusage (RUSAGE_SELF, &ru);
|
|
MD5Update (&md5_ctx, (u_char*)&ru, sizeof ru);
|
|
gettimeofday (&tv, NULL);
|
|
MD5Update (&md5_ctx, (u_char*)&tv, sizeof tv);
|
|
} while (n++<20 || tv.tv_usec-tvo.tv_usec<100*1000);
|
|
MD5Final (d, &md5_ctx);
|
|
return d;
|
|
}
|
|
|
|
static u_char *
|
|
pw_getrand(u_char *buf, int len)
|
|
{
|
|
int fd;
|
|
fd = open("/dev/urandom", O_RDONLY);
|
|
if (!fd || read(fd, buf, len)!=len) {
|
|
int n;
|
|
for (n=0;n<len;n+=16) {
|
|
u_char ubuf[16];
|
|
pw_genmd5rand(ubuf);
|
|
memcpy(buf+n, ubuf, MIN(16, len-n));
|
|
}
|
|
}
|
|
close(fd);
|
|
return buf;
|
|
}
|
|
|
|
static char *
|
|
pw_password(struct userconf * cnf, struct cargs * args, char const * user)
|
|
{
|
|
int i, l;
|
|
char pwbuf[32];
|
|
u_char rndbuf[sizeof pwbuf];
|
|
|
|
switch (cnf->default_password) {
|
|
case -1: /* Random password */
|
|
srandom((unsigned) (time(NULL) ^ getpid()));
|
|
l = (random() % 8 + 8); /* 8 - 16 chars */
|
|
pw_getrand(rndbuf, l);
|
|
for (i = 0; i < l; i++)
|
|
pwbuf[i] = chars[rndbuf[i] % sizeof(chars)];
|
|
pwbuf[i] = '\0';
|
|
|
|
/*
|
|
* We give this information back to the user
|
|
*/
|
|
if (getarg(args, 'h') == NULL && getarg(args, 'N') == NULL) {
|
|
if (isatty(0))
|
|
printf("Password is: ");
|
|
printf("%s\n", pwbuf);
|
|
fflush(stdout);
|
|
}
|
|
break;
|
|
|
|
case -2: /* No password at all! */
|
|
return "";
|
|
|
|
case 0: /* No login - default */
|
|
default:
|
|
return "*";
|
|
|
|
case 1: /* user's name */
|
|
strncpy(pwbuf, user, sizeof pwbuf);
|
|
pwbuf[sizeof pwbuf - 1] = '\0';
|
|
break;
|
|
}
|
|
return pw_pwcrypt(pwbuf);
|
|
}
|
|
|
|
|
|
static int
|
|
print_user(struct passwd * pwd, int pretty)
|
|
{
|
|
if (!pretty) {
|
|
char buf[_UC_MAXLINE];
|
|
|
|
fmtpwent(buf, pwd);
|
|
fputs(buf, stdout);
|
|
} else {
|
|
int j;
|
|
char *p;
|
|
struct group *grp = getgrgid(pwd->pw_gid);
|
|
char uname[60] = "User &", office[60] = "[None]",
|
|
wphone[60] = "[None]", hphone[60] = "[None]";
|
|
|
|
if ((p = strtok(pwd->pw_gecos, ",")) != NULL) {
|
|
strncpy(uname, p, sizeof uname);
|
|
uname[sizeof uname - 1] = '\0';
|
|
if ((p = strtok(NULL, ",")) != NULL) {
|
|
strncpy(office, p, sizeof office);
|
|
office[sizeof office - 1] = '\0';
|
|
if ((p = strtok(NULL, ",")) != NULL) {
|
|
strncpy(wphone, p, sizeof wphone);
|
|
wphone[sizeof wphone - 1] = '\0';
|
|
if ((p = strtok(NULL, "")) != NULL) {
|
|
strncpy(hphone, p, sizeof hphone);
|
|
hphone[sizeof hphone - 1] = '\0';
|
|
}
|
|
}
|
|
}
|
|
}
|
|
/*
|
|
* Handle '&' in gecos field
|
|
*/
|
|
if ((p = strchr(uname, '&')) != NULL) {
|
|
int l = strlen(pwd->pw_name);
|
|
int m = strlen(p);
|
|
|
|
memmove(p + l, p + 1, m);
|
|
memmove(p, pwd->pw_name, l);
|
|
*p = (char) toupper(*p);
|
|
}
|
|
printf("Login Name : %-10s #%-22ld Group : %-10s #%ld\n"
|
|
" Full Name : %s\n"
|
|
" Home : %-32.32s Class : %s\n"
|
|
" Shell : %-32.32s Office : %s\n"
|
|
"Work Phone : %-32.32s Home Phone : %s\n",
|
|
|
|
pwd->pw_name, (long) pwd->pw_uid,
|
|
grp ? grp->gr_name : "(invalid)", (long) pwd->pw_gid,
|
|
uname, pwd->pw_dir, pwd->pw_class,
|
|
pwd->pw_shell, office, wphone, hphone);
|
|
setgrent();
|
|
j = 0;
|
|
while ((grp=getgrent()) != NULL)
|
|
{
|
|
int i = 0;
|
|
while (i < _UC_MAXGROUPS && grp->gr_mem[i] != NULL)
|
|
{
|
|
if (strcmp(grp->gr_mem[i], pwd->pw_name)==0)
|
|
{
|
|
printf(j++ == 0 ? " Groups : %s" : ",%s", grp->gr_name);
|
|
break;
|
|
}
|
|
++i;
|
|
}
|
|
}
|
|
endgrent();
|
|
printf("%s\n", j ? "\n" : "");
|
|
}
|
|
return EXIT_SUCCESS;
|
|
}
|
|
|
|
static char *
|
|
pw_checkname(char *name, int gecos)
|
|
{
|
|
int l = 0;
|
|
char const *notch = gecos ? ":" : " ,\t:+-&#%$^()!@~*?<>=|\\/\"";
|
|
|
|
while (name[l]) {
|
|
if (strchr(notch, name[l]) != NULL || name[l] < ' ' || name[l] > 126)
|
|
cmderr(EX_DATAERR, (name[l]<' ' || (unsigned char)name[l] > 126)
|
|
? "invalid character `%c' in field\n"
|
|
: "invalid character 0x$02x in field\n",
|
|
name[l]);
|
|
++l;
|
|
}
|
|
if (!gecos && l > MAXLOGNAME)
|
|
cmderr(EX_DATAERR, "name too long `%s'\n", name);
|
|
return name;
|
|
}
|
|
|
|
|
|
static void
|
|
rmat(uid_t uid)
|
|
{
|
|
DIR *d = opendir("/var/at/jobs");
|
|
|
|
if (d != NULL) {
|
|
struct dirent *e;
|
|
|
|
while ((e = readdir(d)) != NULL) {
|
|
struct stat st;
|
|
|
|
if (strncmp(e->d_name, ".lock", 5) != 0 &&
|
|
stat(e->d_name, &st) == 0 &&
|
|
!S_ISDIR(st.st_mode) &&
|
|
st.st_uid == uid) {
|
|
char tmp[MAXPATHLEN];
|
|
|
|
sprintf(tmp, "/usr/bin/atrm %s", e->d_name);
|
|
system(tmp);
|
|
}
|
|
}
|
|
closedir(d);
|
|
}
|
|
}
|