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freebsd-nq/usr.sbin/pw/pw_user.c
Joerg Wunsch d6f907dc7a pw(8) -- a backend utility to manage the user and group databases. 
sysinstall's new User&group menu will use it, hence it's a 2.2
candidate despite of providing new functionality.

Submitted by:	David L. Nugent, <davidn@blaze.net.au>
1996-12-09 14:05:35 +00:00

850 lines
24 KiB
C
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/*-
* Copyright (c) 1996 by David L. Nugent <davidn@blaze.net.au>.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer as
* the first lines of this file unmodified.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by David L. Nugent.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE DAVID L. NUGENT ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL DAVID L. NUGENT BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $Id$
*/
#include <unistd.h>
#include <fcntl.h>
#include <ctype.h>
#include <paths.h>
#include <sys/param.h>
#include <dirent.h>
#include <termios.h>
#include "pw.h"
#include "bitmap.h"
#include "pwupd.h"
static int print_user(struct passwd * pwd, int pretty);
static uid_t pw_uidpolicy(struct userconf * cnf, struct cargs * args);
static uid_t pw_gidpolicy(struct userconf * cnf, struct cargs * args, char *nam, gid_t prefer);
static time_t pw_pwdpolicy(struct userconf * cnf, struct cargs * args);
static time_t pw_exppolicy(struct userconf * cnf, struct cargs * args);
static char *pw_homepolicy(struct userconf * cnf, struct cargs * args, char const * user);
static char *pw_shellpolicy(struct userconf * cnf, struct cargs * args, char *newshell);
static char *pw_password(struct userconf * cnf, struct cargs * args, char const * user);
static char *pw_checkname(char *name, int gecos);
static char *shell_path(char const * path, char *shells[], char *sh);
static void rmat(uid_t uid);
/*-
* -C config configuration file
* -q quiet operation
* -n name login name
* -u uid user id
* -c comment user name/comment
* -d directory home directory
* -e date account expiry date
* -p date password expiry date
* -g grp primary group
* -G grp1,grp2 additional groups
* -m [ -k dir ] create and set up home
* -s shell name of login shell
* -o duplicate uid ok
* -L class user class
* -l name new login name
* -h fd password filehandle
* -F force print or add
* Setting defaults:
* -D set user defaults
* -b dir default home root dir
* -e period default expiry period
* -p period default password change period
* -g group default group
* -G grp1,grp2.. default additional groups
* -L class default login class
* -k dir default home skeleton
* -s shell default shell
* -w method default password method
*/
int
pw_user(struct userconf * cnf, int mode, struct cargs * args)
{
char *p = NULL;
struct carg *a_name;
struct carg *a_uid;
struct carg *arg;
struct passwd *pwd = NULL;
struct group *grp;
struct stat st;
char line[MAXPWLINE];
static struct passwd fakeuser =
{
NULL,
"*",
-1,
-1,
0,
"",
"User &",
"/bin/sh",
0,
0
};
/*
* We can do all of the common legwork here
*/
if ((arg = getarg(args, 'b')) != NULL) {
if (stat(cnf->home = arg->val, &st) == -1 || S_ISDIR(st.st_mode))
cmderr(X_CMDERR, "root home `%s' is not a directory or does not exist\n", cnf->home);
}
if ((arg = getarg(args, 'e')) != NULL)
cnf->expire_days = atoi(arg->val);
if ((arg = getarg(args, 'p')) != NULL && arg->val)
cnf->password_days = atoi(arg->val);
if ((arg = getarg(args, 'g')) != NULL) {
p = arg->val;
if ((grp = getgrnam(p)) == NULL) {
if (!isdigit(*p) || (grp = getgrgid((gid_t) atoi(p))) == NULL)
cmderr(X_NOTFOUND, "group `%s' does not exist\n", p);
}
cnf->default_group = newstr(grp->gr_name);
}
if ((arg = getarg(args, 'L')) != NULL)
cnf->default_class = pw_checkname(arg->val, 0);
if ((arg = getarg(args, 'G')) != NULL && arg->val) {
int i = 0;
for (p = strtok(arg->val, ", \t"); i < _UC_MAXGROUPS && p != NULL; p = strtok(NULL, ", \t")) {
if ((grp = getgrnam(p)) == NULL) {
if (!isdigit(*p) || (grp = getgrgid((gid_t) atoi(p))) == NULL)
cmderr(X_NOTFOUND, "group `%s' does not exist\n", p);
}
cnf->groups[i++] = newstr(grp->gr_name);
}
while (i < _UC_MAXGROUPS)
cnf->groups[i++] = NULL;
}
if ((arg = getarg(args, 'k')) != NULL) {
if (stat(cnf->dotdir = arg->val, &st) == -1 || S_ISDIR(st.st_mode))
cmderr(X_CMDERR, "skeleton `%s' is not a directory or does not exist\n", cnf->dotdir);
}
if ((arg = getarg(args, 's')) != NULL)
cnf->shell_default = arg->val;
if (mode == M_ADD && getarg(args, 'D')) {
if (getarg(args, 'n') != NULL)
cmderr(X_CMDERR, "can't combine `-D' with `-n name'\n");
if ((arg = getarg(args, 'u')) != NULL && (p = strtok(arg->val, ", \t")) != NULL) {
if ((cnf->min_uid = (uid_t) atoi(p)) == 0)
cnf->min_uid = 1000;
if ((p = strtok(NULL, " ,\t")) == NULL || (cnf->max_uid = (uid_t) atoi(p)) < cnf->min_uid)
cnf->max_uid = 32000;
}
if ((arg = getarg(args, 'i')) != NULL && (p = strtok(arg->val, ", \t")) != NULL) {
if ((cnf->min_gid = (gid_t) atoi(p)) == 0)
cnf->min_gid = 1000;
if ((p = strtok(NULL, " ,\t")) == NULL || (cnf->max_gid = (gid_t) atoi(p)) < cnf->min_gid)
cnf->max_gid = 32000;
}
if ((arg = getarg(args, 'w')) != NULL)
cnf->default_password = boolean_val(arg->val, cnf->default_password);
arg = getarg(args, 'C');
if (write_userconfig(arg ? arg->val : NULL))
return X_ALLOK;
perror("config update");
return X_UPDERROR;
}
if (mode == M_PRINT && getarg(args, 'a')) {
int pretty = getarg(args, 'p') != NULL;
setpwent();
while ((pwd = getpwent()) != NULL)
print_user(pwd, pretty);
endpwent();
return X_ALLOK;
}
if ((a_name = getarg(args, 'n')) != NULL)
pwd = getpwnam(pw_checkname(a_name->val, 0));
a_uid = getarg(args, 'u');
if (a_uid == NULL) {
if (a_name == NULL)
cmderr(X_CMDERR, "user name or id required\n");
/*
* Determine whether 'n' switch is name or uid - we don't
* really don't really care which we have, but we need to
* know.
*/
if (mode != M_ADD && pwd == NULL && isdigit(*a_name->val) && atoi(a_name->val) > 0) { /* Assume uid */
(a_uid = a_name)->ch = 'u';
a_name = NULL;
}
}
/*
* Update, delete & print require that the user exists
*/
if (mode == M_UPDATE || mode == M_DELETE || mode == M_PRINT) {
if (a_name == NULL && pwd == NULL) /* Try harder */
pwd = getpwuid(atoi(a_uid->val));
if (pwd == NULL) {
if (mode == M_PRINT && getarg(args, 'F')) {
fakeuser.pw_name = a_name ? a_name->val : "nouser";
fakeuser.pw_uid = a_uid ? (uid_t) atol(a_uid->val) : -1;
return print_user(&fakeuser, getarg(args, 'p') != NULL);
}
if (a_name == NULL)
cmderr(X_NOTFOUND, "no such uid `%s'\n", a_uid->val);
cmderr(X_NOTFOUND, "no such user `%s'\n", a_name->val);
}
if (a_name == NULL) /* May be needed later */
a_name = addarg(args, 'n', newstr(pwd->pw_name));
/*
* Handle deletions now
*/
if (mode == M_DELETE) {
char file[MAXPATHLEN];
char home[MAXPATHLEN];
uid_t uid = pwd->pw_uid;
if (strcmp(pwd->pw_name, "root") == 0)
cmderr(X_CMDERR, "cannot remove user 'root'\n");
/*
* Remove crontabs
*/
sprintf(file, "/var/cron/tabs/%s", pwd->pw_name);
if (access(file, F_OK) == 0) {
sprintf(file, "crontab -u %s -r", pwd->pw_name);
system(file);
}
/*
* Save these for later, since contents of pwd may be
* invalidated by deletion
*/
sprintf(file, "%s/%s", _PATH_MAILDIR, pwd->pw_name);
strncpy(home, pwd->pw_dir, sizeof home);
home[sizeof home - 1] = '\0';
if (!delpwent(pwd))
cmderr(X_NOUPDATE, "Error updating passwd file: %s\n", strerror(errno));
editgroups(a_name->val, NULL);
pw_log(cnf, mode, W_USER, "%s(%ld) account removed", a_name->val, (long) uid);
/*
* Remove mail file
*/
remove(file);
/*
* Remove at jobs
*/
if (getpwuid(uid) == NULL)
rmat(uid);
/*
* Remove home directory and contents
*/
if (getarg(args, 'r') != NULL && *home == '/' && getpwuid(uid) == NULL) {
if (stat(home, &st) != -1) {
rm_r(home, uid);
pw_log(cnf, mode, W_USER, "%s(%ld) home '%s' %sremoved",
a_name->val, (long) uid, home,
stat(home, &st) == -1 ? "" : "not completely ");
}
}
return X_ALLOK;
} else if (mode == M_PRINT)
return print_user(pwd, getarg(args, 'p') != NULL);
/*
* The rest is edit code
*/
if ((arg = getarg(args, 'l')) != NULL) {
if (strcmp(pwd->pw_name, "root") == 0)
cmderr(X_CMDERR, "can't rename `root' account\n");
pwd->pw_name = pw_checkname(arg->val, 0);
}
if ((arg = getarg(args, 'u')) != NULL && isdigit(*arg->val)) {
pwd->pw_uid = (uid_t) atol(arg->val);
if (pwd->pw_uid != 0 && strcmp(pwd->pw_name, "root") == 0)
cmderr(X_CMDERR, "can't change uid of `root' account\n");
if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0)
fprintf(stderr, "WARNING: account `%s' will have a uid of 0 (superuser access!)\n", pwd->pw_name);
}
if ((arg = getarg(args, 'g')) != NULL && pwd->pw_uid != 0) /* Already checked this */
pwd->pw_gid = (gid_t) getgrnam(cnf->default_group)->gr_gid;
if ((arg = getarg(args, 'p')) != NULL) {
if (*arg->val == '\0' || strcmp(arg->val, "0") == 0)
pwd->pw_change = 0;
else {
time_t now = time(NULL);
time_t expire = parse_date(now, arg->val);
if (now == expire)
cmderr(X_CMDERR, "Invalid password change date `%s'\n", arg->val);
pwd->pw_change = expire;
}
}
if ((arg = getarg(args, 'p')) != NULL) {
if (*arg->val == '\0' || strcmp(arg->val, "0") == 0)
pwd->pw_expire = 0;
else {
time_t now = time(NULL);
time_t expire = parse_date(now, arg->val);
if (now == expire)
cmderr(X_CMDERR, "Invalid password change date `%s'\n", arg->val);
pwd->pw_expire = expire;
}
}
if ((arg = getarg(args, 's')) != NULL)
pwd->pw_shell = shell_path(cnf->shelldir, cnf->shells, arg->val);
if (getarg(args, 'L'))
pwd->pw_class = cnf->default_class;
} else {
if (a_name == NULL) /* Required */
cmderr(X_CMDERR, "login name required\n");
else if ((pwd = getpwnam(a_name->val)) != NULL) /* Exists */
cmderr(X_EXISTS, "login name `%s' already exists\n", a_name->val);
/*
* Now, set up defaults for a new user
*/
pwd = &fakeuser;
pwd->pw_name = a_name->val;
pwd->pw_class = cnf->default_class ? cnf->default_class : "";
pwd->pw_passwd = pw_password(cnf, args, pwd->pw_name);
pwd->pw_uid = pw_uidpolicy(cnf, args);
pwd->pw_gid = pw_gidpolicy(cnf, args, pwd->pw_name, (gid_t) pwd->pw_uid);
pwd->pw_change = pw_pwdpolicy(cnf, args);
pwd->pw_expire = pw_exppolicy(cnf, args);
pwd->pw_dir = pw_homepolicy(cnf, args, pwd->pw_name);
pwd->pw_shell = pw_shellpolicy(cnf, args, NULL);
if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0)
fprintf(stderr, "WARNING: new account `%s' has a uid of 0 (superuser access!)\n", pwd->pw_name);
}
/*
* Shared add/edit code
*/
if ((arg = getarg(args, 'c')) != NULL)
pwd->pw_gecos = pw_checkname(arg->val, 1);
if ((arg = getarg(args, 'h')) != NULL) {
if (strcmp(arg->val, "-") == 0)
pwd->pw_passwd = "*"; /* No access */
else {
int fd = atoi(arg->val);
int b;
int istty = isatty(fd);
struct termios t;
if (istty) {
if (tcgetattr(fd, &t) == -1)
istty = 0;
else {
struct termios n = t;
/* Disable echo */
n.c_lflag &= ~(ECHO);
tcsetattr(fd, TCSANOW, &n);
printf("%sassword for user %s:", (mode == M_UPDATE) ? "New p" : "P", pwd->pw_name);
fflush(stdout);
}
}
b = read(fd, line, sizeof(line) - 1);
if (istty) { /* Restore state */
tcsetattr(fd, TCSANOW, &t);
fputc('\n', stdout);
fflush(stdout);
}
if (b < 0) {
perror("-h file descriptor");
return X_CMDERR;
}
line[b] = '\0';
if ((p = strpbrk(line, " \t\r\n")) != NULL)
*p = '\0';
if (!*line)
cmderr(X_CMDERR, "empty password read on file descriptor %d\n", fd);
pwd->pw_passwd = pw_pwcrypt(line);
}
}
if ((mode == M_ADD && !addpwent(pwd)) ||
(mode == M_UPDATE && !chgpwent(a_name->val, pwd))) {
perror("password update");
return X_NOUPDATE;
}
/*
* Ok, user is created or changed - now edit group file
*/
if (mode == M_ADD || getarg(args, 'G') != NULL)
editgroups(pwd->pw_name, cnf->groups);
/* pwd may have been invalidated */
if ((pwd = getpwnam(a_name->val)) == NULL)
cmderr(X_NOTFOUND, "user '%s' disappeared during update\n", a_name->val);
grp = getgrgid(pwd->pw_gid);
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 X_ALLOK;
}
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(X_EXISTS, "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(X_EXISTS, "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
*/
if (a_gid != NULL) {
setgrent();
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(X_NOTFOUND, "group `%s' is not defined\n", a_gid->val);
}
endgrent();
gid = grp->gr_gid;
} 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);
}
endgrent();
pw_group(cnf, M_ADD, &grpargs);
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;
}
if ((grp = getgrnam(nam)) != NULL)
gid = grp->gr_gid;
}
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(X_NOTFOUND, "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(X_NOTFOUND, "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(X_NOTFOUND, "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(X_CMDERR, "can't find shell `%s' in shell paths\n", sh);
cmderr(X_CMDERR, "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));
}
static char *
pw_password(struct userconf * cnf, struct cargs * args, char const * user)
{
int i, l;
char pwbuf[32];
switch (cnf->default_password) {
case -1: /* Random password */
srandom((unsigned) (time(NULL) | getpid()));
l = (random() % 8 + 8); /* 8 - 16 chars */
for (i = 0; i < l; i++)
pwbuf[i] = chars[random() % sizeof(chars)];
pwbuf[i] = '\0';
/*
* We give this information back to the user
*/
if (getarg(args, 'h') == 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 {
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\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);
}
return X_ALLOK;
}
static char *
pw_checkname(char *name, int gecos)
{
int l = 0;
char const *notch = gecos ? ":" : " :+-&#%$^()!@~*?<>=|\\/\"";
while (name[l]) {
if (strchr(notch, name[l]) != NULL || name[l] < ' ')
cmderr(X_CMDERR, "invalid character `%c' in field\n", name[l]);
++l;
}
if (!gecos && l > 8)
cmderr(X_CMDERR, "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);
}
}
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