pw_user.c revision 148584
120253Sjoerg/*- 220302Sjoerg * Copyright (C) 1996 320302Sjoerg * David L. Nugent. All rights reserved. 420253Sjoerg * 520253Sjoerg * Redistribution and use in source and binary forms, with or without 620253Sjoerg * modification, are permitted provided that the following conditions 720253Sjoerg * are met: 820253Sjoerg * 1. Redistributions of source code must retain the above copyright 920302Sjoerg * notice, this list of conditions and the following disclaimer. 1020253Sjoerg * 2. Redistributions in binary form must reproduce the above copyright 1120253Sjoerg * notice, this list of conditions and the following disclaimer in the 1220253Sjoerg * documentation and/or other materials provided with the distribution. 1320253Sjoerg * 1420302Sjoerg * THIS SOFTWARE IS PROVIDED BY DAVID L. NUGENT AND CONTRIBUTORS ``AS IS'' AND 1520253Sjoerg * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 1620253Sjoerg * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 1720302Sjoerg * ARE DISCLAIMED. IN NO EVENT SHALL DAVID L. NUGENT OR CONTRIBUTORS BE LIABLE 1820253Sjoerg * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 1920253Sjoerg * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2020253Sjoerg * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2120253Sjoerg * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2220253Sjoerg * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2320253Sjoerg * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2420253Sjoerg * SUCH DAMAGE. 2544229Sdavidn * 2620253Sjoerg */ 2720253Sjoerg 2830259Scharnier#ifndef lint 2930259Scharnierstatic const char rcsid[] = 3050479Speter "$FreeBSD: head/usr.sbin/pw/pw_user.c 148584 2005-07-31 08:25:53Z pjd $"; 3130259Scharnier#endif /* not lint */ 3230259Scharnier 3330259Scharnier#include <ctype.h> 3430259Scharnier#include <err.h> 3520253Sjoerg#include <fcntl.h> 3620253Sjoerg#include <sys/param.h> 3720253Sjoerg#include <dirent.h> 3830259Scharnier#include <paths.h> 3920253Sjoerg#include <termios.h> 4020555Sdavidn#include <sys/types.h> 4120555Sdavidn#include <sys/time.h> 4220555Sdavidn#include <sys/resource.h> 4330259Scharnier#include <unistd.h> 4422394Sdavidn#include <utmp.h> 4564918Sgreen#include <login_cap.h> 4622394Sdavidn#if defined(USE_MD5RAND) 4720555Sdavidn#include <md5.h> 4822394Sdavidn#endif 4920253Sjoerg#include "pw.h" 5020253Sjoerg#include "bitmap.h" 5120253Sjoerg 5223318Sache#if (MAXLOGNAME-1) > UT_NAMESIZE 5322394Sdavidn#define LOGNAMESIZE UT_NAMESIZE 5422394Sdavidn#else 5523318Sache#define LOGNAMESIZE (MAXLOGNAME-1) 5622394Sdavidn#endif 5722394Sdavidn 5852512Sdavidnstatic char locked_str[] = "*LOCKED*"; 5924214Sache 6044386Sdavidnstatic int print_user(struct passwd * pwd, int pretty, int v7); 6120253Sjoergstatic uid_t pw_uidpolicy(struct userconf * cnf, struct cargs * args); 6220253Sjoergstatic uid_t pw_gidpolicy(struct userconf * cnf, struct cargs * args, char *nam, gid_t prefer); 6320253Sjoergstatic time_t pw_pwdpolicy(struct userconf * cnf, struct cargs * args); 6420253Sjoergstatic time_t pw_exppolicy(struct userconf * cnf, struct cargs * args); 6520253Sjoergstatic char *pw_homepolicy(struct userconf * cnf, struct cargs * args, char const * user); 6620253Sjoergstatic char *pw_shellpolicy(struct userconf * cnf, struct cargs * args, char *newshell); 6720253Sjoergstatic char *pw_password(struct userconf * cnf, struct cargs * args, char const * user); 6820253Sjoergstatic char *shell_path(char const * path, char *shells[], char *sh); 6920253Sjoergstatic void rmat(uid_t uid); 7085145Sachestatic void rmopie(char const * name); 7120253Sjoerg 7220253Sjoerg/*- 7320253Sjoerg * -C config configuration file 7420253Sjoerg * -q quiet operation 7520253Sjoerg * -n name login name 7620253Sjoerg * -u uid user id 7720253Sjoerg * -c comment user name/comment 7820253Sjoerg * -d directory home directory 7920253Sjoerg * -e date account expiry date 8020253Sjoerg * -p date password expiry date 8120253Sjoerg * -g grp primary group 8220253Sjoerg * -G grp1,grp2 additional groups 8320253Sjoerg * -m [ -k dir ] create and set up home 8420253Sjoerg * -s shell name of login shell 8520253Sjoerg * -o duplicate uid ok 8620253Sjoerg * -L class user class 8720253Sjoerg * -l name new login name 8820253Sjoerg * -h fd password filehandle 89124382Siedowse * -H fd encrypted password filehandle 9020253Sjoerg * -F force print or add 9120253Sjoerg * Setting defaults: 9220253Sjoerg * -D set user defaults 9320253Sjoerg * -b dir default home root dir 9420253Sjoerg * -e period default expiry period 9520253Sjoerg * -p period default password change period 9620253Sjoerg * -g group default group 9720253Sjoerg * -G grp1,grp2.. default additional groups 9820253Sjoerg * -L class default login class 9920253Sjoerg * -k dir default home skeleton 10020253Sjoerg * -s shell default shell 10120253Sjoerg * -w method default password method 10220253Sjoerg */ 10320253Sjoerg 10420253Sjoergint 10520253Sjoergpw_user(struct userconf * cnf, int mode, struct cargs * args) 10620253Sjoerg{ 10752527Sdavidn int rc, edited = 0; 10820253Sjoerg char *p = NULL; 10952512Sdavidn char *passtmp; 11020253Sjoerg struct carg *a_name; 11120253Sjoerg struct carg *a_uid; 11220253Sjoerg struct carg *arg; 11320253Sjoerg struct passwd *pwd = NULL; 11420253Sjoerg struct group *grp; 11520253Sjoerg struct stat st; 11620747Sdavidn char line[_PASSWORD_LEN+1]; 11782868Sdd FILE *fp; 11820253Sjoerg 11920253Sjoerg static struct passwd fakeuser = 12020253Sjoerg { 12120253Sjoerg NULL, 12220253Sjoerg "*", 12320253Sjoerg -1, 12420253Sjoerg -1, 12520253Sjoerg 0, 12620253Sjoerg "", 12720253Sjoerg "User &", 12856000Sdavidn "/nonexistent", 12920253Sjoerg "/bin/sh", 13020253Sjoerg 0 13156000Sdavidn#if defined(__FreeBSD__) 13256000Sdavidn ,0 13356000Sdavidn#endif 13420253Sjoerg }; 13520253Sjoerg 13652512Sdavidn 13720253Sjoerg /* 13820267Sjoerg * With M_NEXT, we only need to return the 13920267Sjoerg * next uid to stdout 14020267Sjoerg */ 14120267Sjoerg if (mode == M_NEXT) 14220267Sjoerg { 14320267Sjoerg uid_t next = pw_uidpolicy(cnf, args); 14420267Sjoerg if (getarg(args, 'q')) 14520267Sjoerg return next; 14620267Sjoerg printf("%ld:", (long)next); 14720267Sjoerg pw_group(cnf, mode, args); 14820267Sjoerg return EXIT_SUCCESS; 14920267Sjoerg } 15020267Sjoerg 15120267Sjoerg /* 15220253Sjoerg * We can do all of the common legwork here 15320253Sjoerg */ 15420253Sjoerg 15520253Sjoerg if ((arg = getarg(args, 'b')) != NULL) { 15620267Sjoerg cnf->home = arg->val; 15720253Sjoerg } 15821052Sdavidn 15921052Sdavidn /* 16021052Sdavidn * If we'll need to use it or we're updating it, 16121052Sdavidn * then create the base home directory if necessary 16221052Sdavidn */ 16321052Sdavidn if (arg != NULL || getarg(args, 'm') != NULL) { 16421052Sdavidn int l = strlen(cnf->home); 16521052Sdavidn 16621052Sdavidn if (l > 1 && cnf->home[l-1] == '/') /* Shave off any trailing path delimiter */ 16721052Sdavidn cnf->home[--l] = '\0'; 16821052Sdavidn 16921052Sdavidn if (l < 2 || *cnf->home != '/') /* Check for absolute path name */ 17030259Scharnier errx(EX_DATAERR, "invalid base directory for home '%s'", cnf->home); 17121052Sdavidn 17221052Sdavidn if (stat(cnf->home, &st) == -1) { 17321052Sdavidn char dbuf[MAXPATHLEN]; 17421052Sdavidn 17521242Sdavidn /* 17621242Sdavidn * This is a kludge especially for Joerg :) 17721242Sdavidn * If the home directory would be created in the root partition, then 17821242Sdavidn * we really create it under /usr which is likely to have more space. 17921242Sdavidn * But we create a symlink from cnf->home -> "/usr" -> cnf->home 18021242Sdavidn */ 18121242Sdavidn if (strchr(cnf->home+1, '/') == NULL) { 18221242Sdavidn strcpy(dbuf, "/usr"); 18321242Sdavidn strncat(dbuf, cnf->home, MAXPATHLEN-5); 18421242Sdavidn if (mkdir(dbuf, 0755) != -1 || errno == EEXIST) { 18521242Sdavidn chown(dbuf, 0, 0); 186148584Spjd /* 187148584Spjd * Skip first "/" and create symlink: 188148584Spjd * /home -> usr/home 189148584Spjd */ 190148584Spjd symlink(dbuf+1, cnf->home); 19121242Sdavidn } 19221242Sdavidn /* If this falls, fall back to old method */ 19321242Sdavidn } 194130633Srobert strlcpy(dbuf, cnf->home, sizeof(dbuf)); 195130633Srobert p = dbuf; 19621242Sdavidn if (stat(dbuf, &st) == -1) { 19721242Sdavidn while ((p = strchr(++p, '/')) != NULL) { 19821242Sdavidn *p = '\0'; 19921242Sdavidn if (stat(dbuf, &st) == -1) { 20021242Sdavidn if (mkdir(dbuf, 0755) == -1) 20121242Sdavidn goto direrr; 20221242Sdavidn chown(dbuf, 0, 0); 20321242Sdavidn } else if (!S_ISDIR(st.st_mode)) 20430259Scharnier errx(EX_OSFILE, "'%s' (root home parent) is not a directory", dbuf); 20521242Sdavidn *p = '/'; 20621242Sdavidn } 20721052Sdavidn } 20821242Sdavidn if (stat(dbuf, &st) == -1) { 20921052Sdavidn if (mkdir(dbuf, 0755) == -1) { 21030259Scharnier direrr: err(EX_OSFILE, "mkdir '%s'", dbuf); 21121052Sdavidn } 21221052Sdavidn chown(dbuf, 0, 0); 21321052Sdavidn } 21421052Sdavidn } else if (!S_ISDIR(st.st_mode)) 21530259Scharnier errx(EX_OSFILE, "root home `%s' is not a directory", cnf->home); 21621052Sdavidn } 21721052Sdavidn 21820253Sjoerg if ((arg = getarg(args, 'e')) != NULL) 21920253Sjoerg cnf->expire_days = atoi(arg->val); 22020253Sjoerg 22121330Sdavidn if ((arg = getarg(args, 'y')) != NULL) 22221330Sdavidn cnf->nispasswd = arg->val; 22321330Sdavidn 22420253Sjoerg if ((arg = getarg(args, 'p')) != NULL && arg->val) 22520253Sjoerg cnf->password_days = atoi(arg->val); 22620253Sjoerg 22720253Sjoerg if ((arg = getarg(args, 'g')) != NULL) { 22863596Sdavidn if (!*(p = arg->val)) /* Handle empty group list specially */ 22963596Sdavidn cnf->default_group = ""; 23063596Sdavidn else { 23163596Sdavidn if ((grp = GETGRNAM(p)) == NULL) { 23263596Sdavidn if (!isdigit((unsigned char)*p) || (grp = GETGRGID((gid_t) atoi(p))) == NULL) 23363596Sdavidn errx(EX_NOUSER, "group `%s' does not exist", p); 23463596Sdavidn } 23563596Sdavidn cnf->default_group = newstr(grp->gr_name); 23620253Sjoerg } 23720253Sjoerg } 23820253Sjoerg if ((arg = getarg(args, 'L')) != NULL) 23920679Sdavidn cnf->default_class = pw_checkname((u_char *)arg->val, 0); 24020253Sjoerg 24120253Sjoerg if ((arg = getarg(args, 'G')) != NULL && arg->val) { 24252527Sdavidn int i = 0; 24320253Sjoerg 24420747Sdavidn for (p = strtok(arg->val, ", \t"); p != NULL; p = strtok(NULL, ", \t")) { 24544229Sdavidn if ((grp = GETGRNAM(p)) == NULL) { 24661957Sache if (!isdigit((unsigned char)*p) || (grp = GETGRGID((gid_t) atoi(p))) == NULL) 24730259Scharnier errx(EX_NOUSER, "group `%s' does not exist", p); 24820253Sjoerg } 24920747Sdavidn if (extendarray(&cnf->groups, &cnf->numgroups, i + 2) != -1) 25020747Sdavidn cnf->groups[i++] = newstr(grp->gr_name); 25120253Sjoerg } 25220747Sdavidn while (i < cnf->numgroups) 25320253Sjoerg cnf->groups[i++] = NULL; 25420253Sjoerg } 25552527Sdavidn 25620253Sjoerg if ((arg = getarg(args, 'k')) != NULL) { 25726088Sdavidn if (stat(cnf->dotdir = arg->val, &st) == -1 || !S_ISDIR(st.st_mode)) 25830259Scharnier errx(EX_OSFILE, "skeleton `%s' is not a directory or does not exist", cnf->dotdir); 25920253Sjoerg } 26052527Sdavidn 26120253Sjoerg if ((arg = getarg(args, 's')) != NULL) 26220253Sjoerg cnf->shell_default = arg->val; 26320253Sjoerg 26463600Sdavidn if ((arg = getarg(args, 'w')) != NULL) 26563600Sdavidn cnf->default_password = boolean_val(arg->val, cnf->default_password); 26620253Sjoerg if (mode == M_ADD && getarg(args, 'D')) { 26720253Sjoerg if (getarg(args, 'n') != NULL) 26830259Scharnier errx(EX_DATAERR, "can't combine `-D' with `-n name'"); 26920253Sjoerg if ((arg = getarg(args, 'u')) != NULL && (p = strtok(arg->val, ", \t")) != NULL) { 27020253Sjoerg if ((cnf->min_uid = (uid_t) atoi(p)) == 0) 27120253Sjoerg cnf->min_uid = 1000; 27220253Sjoerg if ((p = strtok(NULL, " ,\t")) == NULL || (cnf->max_uid = (uid_t) atoi(p)) < cnf->min_uid) 27320253Sjoerg cnf->max_uid = 32000; 27420253Sjoerg } 27520253Sjoerg if ((arg = getarg(args, 'i')) != NULL && (p = strtok(arg->val, ", \t")) != NULL) { 27620253Sjoerg if ((cnf->min_gid = (gid_t) atoi(p)) == 0) 27720253Sjoerg cnf->min_gid = 1000; 27820253Sjoerg if ((p = strtok(NULL, " ,\t")) == NULL || (cnf->max_gid = (gid_t) atoi(p)) < cnf->min_gid) 27920253Sjoerg cnf->max_gid = 32000; 28020253Sjoerg } 28120253Sjoerg 28220253Sjoerg arg = getarg(args, 'C'); 28320253Sjoerg if (write_userconfig(arg ? arg->val : NULL)) 28420267Sjoerg return EXIT_SUCCESS; 28530259Scharnier warn("config update"); 28620267Sjoerg return EX_IOERR; 28720253Sjoerg } 28852527Sdavidn 28920253Sjoerg if (mode == M_PRINT && getarg(args, 'a')) { 29020267Sjoerg int pretty = getarg(args, 'P') != NULL; 29144386Sdavidn int v7 = getarg(args, '7') != NULL; 29220253Sjoerg 29344229Sdavidn SETPWENT(); 29444229Sdavidn while ((pwd = GETPWENT()) != NULL) 29544386Sdavidn print_user(pwd, pretty, v7); 29644229Sdavidn ENDPWENT(); 29720267Sjoerg return EXIT_SUCCESS; 29820253Sjoerg } 29952527Sdavidn 30020253Sjoerg if ((a_name = getarg(args, 'n')) != NULL) 30144229Sdavidn pwd = GETPWNAM(pw_checkname((u_char *)a_name->val, 0)); 30220253Sjoerg a_uid = getarg(args, 'u'); 30320253Sjoerg 30420253Sjoerg if (a_uid == NULL) { 30520253Sjoerg if (a_name == NULL) 30630259Scharnier errx(EX_DATAERR, "user name or id required"); 30720253Sjoerg 30820253Sjoerg /* 30920253Sjoerg * Determine whether 'n' switch is name or uid - we don't 31020253Sjoerg * really don't really care which we have, but we need to 31120253Sjoerg * know. 31220253Sjoerg */ 31343780Sdes if (mode != M_ADD && pwd == NULL 31443780Sdes && strspn(a_name->val, "0123456789") == strlen(a_name->val) 31543780Sdes && atoi(a_name->val) > 0) { /* Assume uid */ 31620253Sjoerg (a_uid = a_name)->ch = 'u'; 31720253Sjoerg a_name = NULL; 31820253Sjoerg } 31920253Sjoerg } 32052527Sdavidn 32120253Sjoerg /* 32220253Sjoerg * Update, delete & print require that the user exists 32320253Sjoerg */ 32452512Sdavidn if (mode == M_UPDATE || mode == M_DELETE || 32552512Sdavidn mode == M_PRINT || mode == M_LOCK || mode == M_UNLOCK) { 32652527Sdavidn 32720253Sjoerg if (a_name == NULL && pwd == NULL) /* Try harder */ 32844229Sdavidn pwd = GETPWUID(atoi(a_uid->val)); 32920253Sjoerg 33020253Sjoerg if (pwd == NULL) { 33120253Sjoerg if (mode == M_PRINT && getarg(args, 'F')) { 33220253Sjoerg fakeuser.pw_name = a_name ? a_name->val : "nouser"; 33320253Sjoerg fakeuser.pw_uid = a_uid ? (uid_t) atol(a_uid->val) : -1; 33444386Sdavidn return print_user(&fakeuser, 33544386Sdavidn getarg(args, 'P') != NULL, 33644386Sdavidn getarg(args, '7') != NULL); 33720253Sjoerg } 33820253Sjoerg if (a_name == NULL) 33930259Scharnier errx(EX_NOUSER, "no such uid `%s'", a_uid->val); 34030259Scharnier errx(EX_NOUSER, "no such user `%s'", a_name->val); 34120253Sjoerg } 34252527Sdavidn 34320253Sjoerg if (a_name == NULL) /* May be needed later */ 34420253Sjoerg a_name = addarg(args, 'n', newstr(pwd->pw_name)); 34520253Sjoerg 34620253Sjoerg /* 34752512Sdavidn * The M_LOCK and M_UNLOCK functions simply add or remove 34852512Sdavidn * a "*LOCKED*" prefix from in front of the password to 34952512Sdavidn * prevent it decoding correctly, and therefore prevents 35052512Sdavidn * access. Of course, this only prevents access via 35152512Sdavidn * password authentication (not ssh, kerberos or any 35252512Sdavidn * other method that does not use the UNIX password) but 35352512Sdavidn * that is a known limitation. 35452512Sdavidn */ 35552512Sdavidn 35652512Sdavidn if (mode == M_LOCK) { 35752512Sdavidn if (strncmp(pwd->pw_passwd, locked_str, sizeof(locked_str)-1) == 0) 35852512Sdavidn errx(EX_DATAERR, "user '%s' is already locked", pwd->pw_name); 35952512Sdavidn passtmp = malloc(strlen(pwd->pw_passwd) + sizeof(locked_str)); 36052512Sdavidn if (passtmp == NULL) /* disaster */ 36152512Sdavidn errx(EX_UNAVAILABLE, "out of memory"); 36252512Sdavidn strcpy(passtmp, locked_str); 36352512Sdavidn strcat(passtmp, pwd->pw_passwd); 36452512Sdavidn pwd->pw_passwd = passtmp; 36552527Sdavidn edited = 1; 36652512Sdavidn } else if (mode == M_UNLOCK) { 36752512Sdavidn if (strncmp(pwd->pw_passwd, locked_str, sizeof(locked_str)-1) != 0) 36852512Sdavidn errx(EX_DATAERR, "user '%s' is not locked", pwd->pw_name); 36952512Sdavidn pwd->pw_passwd += sizeof(locked_str)-1; 37052527Sdavidn edited = 1; 37152527Sdavidn } else if (mode == M_DELETE) { 37252527Sdavidn /* 37352527Sdavidn * Handle deletions now 37452527Sdavidn */ 37520253Sjoerg char file[MAXPATHLEN]; 37620253Sjoerg char home[MAXPATHLEN]; 37720253Sjoerg uid_t uid = pwd->pw_uid; 37820253Sjoerg 37920253Sjoerg if (strcmp(pwd->pw_name, "root") == 0) 38030259Scharnier errx(EX_DATAERR, "cannot remove user 'root'"); 38120253Sjoerg 38244229Sdavidn if (!PWALTDIR()) { 38344229Sdavidn /* 38485145Sache * Remove opie record from /etc/opiekeys 38544229Sdavidn */ 38620747Sdavidn 38785145Sache rmopie(pwd->pw_name); 38820747Sdavidn 38944229Sdavidn /* 39044229Sdavidn * Remove crontabs 39144229Sdavidn */ 39244229Sdavidn sprintf(file, "/var/cron/tabs/%s", pwd->pw_name); 39344229Sdavidn if (access(file, F_OK) == 0) { 39444229Sdavidn sprintf(file, "crontab -u %s -r", pwd->pw_name); 39544229Sdavidn system(file); 39644229Sdavidn } 39720253Sjoerg } 39820253Sjoerg /* 39920253Sjoerg * Save these for later, since contents of pwd may be 40020253Sjoerg * invalidated by deletion 40120253Sjoerg */ 40220253Sjoerg sprintf(file, "%s/%s", _PATH_MAILDIR, pwd->pw_name); 403130633Srobert strlcpy(home, pwd->pw_dir, sizeof(home)); 40420253Sjoerg 40552502Sdavidn rc = delpwent(pwd); 40652502Sdavidn if (rc == -1) 40752502Sdavidn err(EX_IOERR, "user '%s' does not exist", pwd->pw_name); 40852502Sdavidn else if (rc != 0) { 40956000Sdavidn warn("passwd update"); 41052502Sdavidn return EX_IOERR; 41152502Sdavidn } 41221330Sdavidn 41352502Sdavidn if (cnf->nispasswd && *cnf->nispasswd=='/') { 41452502Sdavidn rc = delnispwent(cnf->nispasswd, a_name->val); 41552502Sdavidn if (rc == -1) 41652502Sdavidn warnx("WARNING: user '%s' does not exist in NIS passwd", pwd->pw_name); 41752502Sdavidn else if (rc != 0) 41856000Sdavidn warn("WARNING: NIS passwd update"); 41952502Sdavidn /* non-fatal */ 42052502Sdavidn } 42152502Sdavidn 42220253Sjoerg editgroups(a_name->val, NULL); 42320253Sjoerg 42420253Sjoerg pw_log(cnf, mode, W_USER, "%s(%ld) account removed", a_name->val, (long) uid); 42520253Sjoerg 42644229Sdavidn if (!PWALTDIR()) { 42744229Sdavidn /* 42844229Sdavidn * Remove mail file 42944229Sdavidn */ 43044229Sdavidn remove(file); 43120253Sjoerg 43244229Sdavidn /* 43344229Sdavidn * Remove at jobs 43444229Sdavidn */ 43544229Sdavidn if (getpwuid(uid) == NULL) 43644229Sdavidn rmat(uid); 43720253Sjoerg 43844229Sdavidn /* 43944229Sdavidn * Remove home directory and contents 44044229Sdavidn */ 44144229Sdavidn if (getarg(args, 'r') != NULL && *home == '/' && getpwuid(uid) == NULL) { 44244229Sdavidn if (stat(home, &st) != -1) { 44344229Sdavidn rm_r(home, uid); 44444229Sdavidn pw_log(cnf, mode, W_USER, "%s(%ld) home '%s' %sremoved", 44544229Sdavidn a_name->val, (long) uid, home, 44644229Sdavidn stat(home, &st) == -1 ? "" : "not completely "); 44744229Sdavidn } 44820253Sjoerg } 44920253Sjoerg } 45020267Sjoerg return EXIT_SUCCESS; 45120253Sjoerg } else if (mode == M_PRINT) 45244386Sdavidn return print_user(pwd, 45344386Sdavidn getarg(args, 'P') != NULL, 45444386Sdavidn getarg(args, '7') != NULL); 45520253Sjoerg 45620253Sjoerg /* 45720253Sjoerg * The rest is edit code 45820253Sjoerg */ 45920253Sjoerg if ((arg = getarg(args, 'l')) != NULL) { 46020253Sjoerg if (strcmp(pwd->pw_name, "root") == 0) 46130259Scharnier errx(EX_DATAERR, "can't rename `root' account"); 46220679Sdavidn pwd->pw_name = pw_checkname((u_char *)arg->val, 0); 46352527Sdavidn edited = 1; 46420253Sjoerg } 46552527Sdavidn 46661957Sache if ((arg = getarg(args, 'u')) != NULL && isdigit((unsigned char)*arg->val)) { 46720253Sjoerg pwd->pw_uid = (uid_t) atol(arg->val); 46852527Sdavidn edited = 1; 46920253Sjoerg if (pwd->pw_uid != 0 && strcmp(pwd->pw_name, "root") == 0) 47030259Scharnier errx(EX_DATAERR, "can't change uid of `root' account"); 47120253Sjoerg if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0) 47230259Scharnier warnx("WARNING: account `%s' will have a uid of 0 (superuser access!)", pwd->pw_name); 47320253Sjoerg } 47420253Sjoerg 47552527Sdavidn if ((arg = getarg(args, 'g')) != NULL && pwd->pw_uid != 0) { /* Already checked this */ 47652527Sdavidn gid_t newgid = (gid_t) GETGRNAM(cnf->default_group)->gr_gid; 47752527Sdavidn if (newgid != pwd->pw_gid) { 47852527Sdavidn edited = 1; 47961762Sdavidn pwd->pw_gid = newgid; 48052527Sdavidn } 48152527Sdavidn } 48252527Sdavidn 48320253Sjoerg if ((arg = getarg(args, 'p')) != NULL) { 48452527Sdavidn if (*arg->val == '\0' || strcmp(arg->val, "0") == 0) { 48552527Sdavidn if (pwd->pw_change != 0) { 48652527Sdavidn pwd->pw_change = 0; 48752527Sdavidn edited = 1; 48852527Sdavidn } 48952527Sdavidn } 49020253Sjoerg else { 49120253Sjoerg time_t now = time(NULL); 49220253Sjoerg time_t expire = parse_date(now, arg->val); 49320253Sjoerg 49420253Sjoerg if (now == expire) 49530259Scharnier errx(EX_DATAERR, "invalid password change date `%s'", arg->val); 49652527Sdavidn if (pwd->pw_change != expire) { 49752527Sdavidn pwd->pw_change = expire; 49852527Sdavidn edited = 1; 49952527Sdavidn } 50020253Sjoerg } 50120253Sjoerg } 50252527Sdavidn 50320267Sjoerg if ((arg = getarg(args, 'e')) != NULL) { 50452527Sdavidn if (*arg->val == '\0' || strcmp(arg->val, "0") == 0) { 50552527Sdavidn if (pwd->pw_expire != 0) { 50652527Sdavidn pwd->pw_expire = 0; 50752527Sdavidn edited = 1; 50852527Sdavidn } 50952527Sdavidn } 51020253Sjoerg else { 51120253Sjoerg time_t now = time(NULL); 51220253Sjoerg time_t expire = parse_date(now, arg->val); 51320253Sjoerg 51420253Sjoerg if (now == expire) 51530259Scharnier errx(EX_DATAERR, "invalid account expiry date `%s'", arg->val); 51652527Sdavidn if (pwd->pw_expire != expire) { 51752527Sdavidn pwd->pw_expire = expire; 51852527Sdavidn edited = 1; 51952527Sdavidn } 52020253Sjoerg } 52120253Sjoerg } 52220253Sjoerg 52352527Sdavidn if ((arg = getarg(args, 's')) != NULL) { 52452527Sdavidn char *shell = shell_path(cnf->shelldir, cnf->shells, arg->val); 52552527Sdavidn if (shell == NULL) 52652527Sdavidn shell = ""; 52752527Sdavidn if (strcmp(shell, pwd->pw_shell) != 0) { 52852527Sdavidn pwd->pw_shell = shell; 52952527Sdavidn edited = 1; 53052527Sdavidn } 53152527Sdavidn } 53220253Sjoerg 53352527Sdavidn if (getarg(args, 'L')) { 53452527Sdavidn if (cnf->default_class == NULL) 53552527Sdavidn cnf->default_class = ""; 53652527Sdavidn if (strcmp(pwd->pw_class, cnf->default_class) != 0) { 53752527Sdavidn pwd->pw_class = cnf->default_class; 53852527Sdavidn edited = 1; 53952527Sdavidn } 54052527Sdavidn } 54152527Sdavidn 54220747Sdavidn if ((arg = getarg(args, 'd')) != NULL) { 543130629Srobert if (strcmp(pwd->pw_dir, arg->val)) 544130629Srobert edited = 1; 54520747Sdavidn if (stat(pwd->pw_dir = arg->val, &st) == -1) { 54620747Sdavidn if (getarg(args, 'm') == NULL && strcmp(pwd->pw_dir, "/nonexistent") != 0) 54730259Scharnier warnx("WARNING: home `%s' does not exist", pwd->pw_dir); 54820747Sdavidn } else if (!S_ISDIR(st.st_mode)) 54930259Scharnier warnx("WARNING: home `%s' is not a directory", pwd->pw_dir); 55020747Sdavidn } 55120747Sdavidn 552124382Siedowse if ((arg = getarg(args, 'w')) != NULL && 553124382Siedowse getarg(args, 'h') == NULL && getarg(args, 'H') == NULL) { 55464918Sgreen login_cap_t *lc; 55564918Sgreen 55664918Sgreen lc = login_getpwclass(pwd); 55764918Sgreen if (lc == NULL || 55864918Sgreen login_setcryptfmt(lc, "md5", NULL) == NULL) 55964918Sgreen warn("setting crypt(3) format"); 56064918Sgreen login_close(lc); 56120267Sjoerg pwd->pw_passwd = pw_password(cnf, args, pwd->pw_name); 56252527Sdavidn edited = 1; 56352527Sdavidn } 56420267Sjoerg 56520253Sjoerg } else { 56664918Sgreen login_cap_t *lc; 56752527Sdavidn 56852527Sdavidn /* 56952527Sdavidn * Add code 57052527Sdavidn */ 57152527Sdavidn 57220253Sjoerg if (a_name == NULL) /* Required */ 57330259Scharnier errx(EX_DATAERR, "login name required"); 57444229Sdavidn else if ((pwd = GETPWNAM(a_name->val)) != NULL) /* Exists */ 57530259Scharnier errx(EX_DATAERR, "login name `%s' already exists", a_name->val); 57620253Sjoerg 57720253Sjoerg /* 57820253Sjoerg * Now, set up defaults for a new user 57920253Sjoerg */ 58020253Sjoerg pwd = &fakeuser; 58120253Sjoerg pwd->pw_name = a_name->val; 58220253Sjoerg pwd->pw_class = cnf->default_class ? cnf->default_class : ""; 58320253Sjoerg pwd->pw_uid = pw_uidpolicy(cnf, args); 58420253Sjoerg pwd->pw_gid = pw_gidpolicy(cnf, args, pwd->pw_name, (gid_t) pwd->pw_uid); 58520253Sjoerg pwd->pw_change = pw_pwdpolicy(cnf, args); 58620253Sjoerg pwd->pw_expire = pw_exppolicy(cnf, args); 58720253Sjoerg pwd->pw_dir = pw_homepolicy(cnf, args, pwd->pw_name); 58820253Sjoerg pwd->pw_shell = pw_shellpolicy(cnf, args, NULL); 58964918Sgreen lc = login_getpwclass(pwd); 59064918Sgreen if (lc == NULL || login_setcryptfmt(lc, "md5", NULL) == NULL) 59164918Sgreen warn("setting crypt(3) format"); 59264918Sgreen login_close(lc); 59364918Sgreen pwd->pw_passwd = pw_password(cnf, args, pwd->pw_name); 59452527Sdavidn edited = 1; 59520253Sjoerg 59620253Sjoerg if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0) 59730259Scharnier warnx("WARNING: new account `%s' has a uid of 0 (superuser access!)", pwd->pw_name); 59820253Sjoerg } 59920253Sjoerg 60020253Sjoerg /* 60120253Sjoerg * Shared add/edit code 60220253Sjoerg */ 60352527Sdavidn if ((arg = getarg(args, 'c')) != NULL) { 60452527Sdavidn char *gecos = pw_checkname((u_char *)arg->val, 1); 60552527Sdavidn if (strcmp(pwd->pw_gecos, gecos) != 0) { 60652527Sdavidn pwd->pw_gecos = gecos; 60752527Sdavidn edited = 1; 60852527Sdavidn } 60952527Sdavidn } 61020253Sjoerg 611124382Siedowse if ((arg = getarg(args, 'h')) != NULL || 612124382Siedowse (arg = getarg(args, 'H')) != NULL) { 61363572Sdavidn if (strcmp(arg->val, "-") == 0) { 61463572Sdavidn if (!pwd->pw_passwd || *pwd->pw_passwd != '*') { 61563572Sdavidn pwd->pw_passwd = "*"; /* No access */ 61663572Sdavidn edited = 1; 61763572Sdavidn } 61863572Sdavidn } else { 61920253Sjoerg int fd = atoi(arg->val); 620124382Siedowse int precrypt = (arg->ch == 'H'); 62120253Sjoerg int b; 62220253Sjoerg int istty = isatty(fd); 62320253Sjoerg struct termios t; 62464918Sgreen login_cap_t *lc; 62520253Sjoerg 62620253Sjoerg if (istty) { 62720253Sjoerg if (tcgetattr(fd, &t) == -1) 62820253Sjoerg istty = 0; 62920253Sjoerg else { 63020253Sjoerg struct termios n = t; 63120253Sjoerg 63220253Sjoerg /* Disable echo */ 63320253Sjoerg n.c_lflag &= ~(ECHO); 63420253Sjoerg tcsetattr(fd, TCSANOW, &n); 635124382Siedowse printf("%s%spassword for user %s:", 636124382Siedowse (mode == M_UPDATE) ? "new " : "", 637124382Siedowse precrypt ? "encrypted " : "", 638124382Siedowse pwd->pw_name); 63920253Sjoerg fflush(stdout); 64020253Sjoerg } 64120253Sjoerg } 64220253Sjoerg b = read(fd, line, sizeof(line) - 1); 64320253Sjoerg if (istty) { /* Restore state */ 64420253Sjoerg tcsetattr(fd, TCSANOW, &t); 64520253Sjoerg fputc('\n', stdout); 64620253Sjoerg fflush(stdout); 64720253Sjoerg } 64820253Sjoerg if (b < 0) { 649124382Siedowse warn("-%c file descriptor", precrypt ? 'H' : 650124382Siedowse 'h'); 65120267Sjoerg return EX_IOERR; 65220253Sjoerg } 65320253Sjoerg line[b] = '\0'; 65420253Sjoerg if ((p = strpbrk(line, " \t\r\n")) != NULL) 65520253Sjoerg *p = '\0'; 65620253Sjoerg if (!*line) 65730259Scharnier errx(EX_DATAERR, "empty password read on file descriptor %d", fd); 658124382Siedowse if (precrypt) { 659124382Siedowse if (strchr(line, ':') != NULL) 660124382Siedowse return EX_DATAERR; 661124382Siedowse pwd->pw_passwd = line; 662124382Siedowse } else { 663124382Siedowse lc = login_getpwclass(pwd); 664124382Siedowse if (lc == NULL || 665124382Siedowse login_setcryptfmt(lc, "md5", NULL) == NULL) 666124382Siedowse warn("setting crypt(3) format"); 667124382Siedowse login_close(lc); 668124382Siedowse pwd->pw_passwd = pw_pwcrypt(line); 669124382Siedowse } 67052527Sdavidn edited = 1; 67120253Sjoerg } 67220253Sjoerg } 67320267Sjoerg 67420267Sjoerg /* 67520267Sjoerg * Special case: -N only displays & exits 67620267Sjoerg */ 67720267Sjoerg if (getarg(args, 'N') != NULL) 67844386Sdavidn return print_user(pwd, 67944386Sdavidn getarg(args, 'P') != NULL, 68044386Sdavidn getarg(args, '7') != NULL); 68120267Sjoerg 68221330Sdavidn if (mode == M_ADD) { 68352527Sdavidn edited = 1; /* Always */ 68452502Sdavidn rc = addpwent(pwd); 68552502Sdavidn if (rc == -1) { 68652502Sdavidn warnx("user '%s' already exists", pwd->pw_name); 68752502Sdavidn return EX_IOERR; 68852502Sdavidn } else if (rc != 0) { 68956000Sdavidn warn("passwd file update"); 69052502Sdavidn return EX_IOERR; 69152502Sdavidn } 69252502Sdavidn if (cnf->nispasswd && *cnf->nispasswd=='/') { 69352502Sdavidn rc = addnispwent(cnf->nispasswd, pwd); 69452502Sdavidn if (rc == -1) 69552502Sdavidn warnx("User '%s' already exists in NIS passwd", pwd->pw_name); 69652502Sdavidn else 69756000Sdavidn warn("NIS passwd update"); 69852502Sdavidn /* NOTE: we treat NIS-only update errors as non-fatal */ 69952502Sdavidn } 70052512Sdavidn } else if (mode == M_UPDATE || mode == M_LOCK || mode == M_UNLOCK) { 70152527Sdavidn if (edited) { /* Only updated this if required */ 70252527Sdavidn rc = chgpwent(a_name->val, pwd); 70352527Sdavidn if (rc == -1) { 70452527Sdavidn warnx("user '%s' does not exist (NIS?)", pwd->pw_name); 70552527Sdavidn return EX_IOERR; 70652527Sdavidn } else if (rc != 0) { 70756000Sdavidn warn("passwd file update"); 70852527Sdavidn return EX_IOERR; 70952527Sdavidn } 71052527Sdavidn if ( cnf->nispasswd && *cnf->nispasswd=='/') { 71152527Sdavidn rc = chgnispwent(cnf->nispasswd, a_name->val, pwd); 71252527Sdavidn if (rc == -1) 71352527Sdavidn warn("User '%s' not found in NIS passwd", pwd->pw_name); 71452527Sdavidn else 71556000Sdavidn warn("NIS passwd update"); 71652527Sdavidn /* NOTE: NIS-only update errors are not fatal */ 71752527Sdavidn } 71852502Sdavidn } 71921330Sdavidn } 72021330Sdavidn 72120253Sjoerg /* 72220253Sjoerg * Ok, user is created or changed - now edit group file 72320253Sjoerg */ 72420253Sjoerg 72520253Sjoerg if (mode == M_ADD || getarg(args, 'G') != NULL) 72620253Sjoerg editgroups(pwd->pw_name, cnf->groups); 72720253Sjoerg 72861759Sdavidn /* go get a current version of pwd */ 72961759Sdavidn pwd = GETPWNAM(a_name->val); 73061759Sdavidn if (pwd == NULL) { 73161759Sdavidn /* This will fail when we rename, so special case that */ 73261759Sdavidn if (mode == M_UPDATE && (arg = getarg(args, 'l')) != NULL) { 73361759Sdavidn a_name->val = arg->val; /* update new name */ 73461759Sdavidn pwd = GETPWNAM(a_name->val); /* refetch renamed rec */ 73561759Sdavidn } 73661759Sdavidn } 73761759Sdavidn if (pwd == NULL) /* can't go on without this */ 73830259Scharnier errx(EX_NOUSER, "user '%s' disappeared during update", a_name->val); 73920253Sjoerg 74044229Sdavidn grp = GETGRGID(pwd->pw_gid); 74198744Sdwmalone pw_log(cnf, mode, W_USER, "%s(%ld):%s(%ld):%s:%s:%s", 74220253Sjoerg pwd->pw_name, (long) pwd->pw_uid, 74320253Sjoerg grp ? grp->gr_name : "unknown", (long) (grp ? grp->gr_gid : -1), 74420253Sjoerg pwd->pw_gecos, pwd->pw_dir, pwd->pw_shell); 74520253Sjoerg 74620253Sjoerg /* 74720253Sjoerg * If adding, let's touch and chown the user's mail file. This is not 74820253Sjoerg * strictly necessary under BSD with a 0755 maildir but it also 74920253Sjoerg * doesn't hurt anything to create the empty mailfile 75020253Sjoerg */ 75120253Sjoerg if (mode == M_ADD) { 75244229Sdavidn if (!PWALTDIR()) { 75344229Sdavidn sprintf(line, "%s/%s", _PATH_MAILDIR, pwd->pw_name); 75444229Sdavidn close(open(line, O_RDWR | O_CREAT, 0600)); /* Preserve contents & 75544229Sdavidn * mtime */ 75644229Sdavidn chown(line, pwd->pw_uid, pwd->pw_gid); 75720253Sjoerg } 75820253Sjoerg } 75952527Sdavidn 76020253Sjoerg /* 76182868Sdd * Let's create and populate the user's home directory. Note 76220253Sjoerg * that this also `works' for editing users if -m is used, but 76320253Sjoerg * existing files will *not* be overwritten. 76420253Sjoerg */ 76544229Sdavidn if (!PWALTDIR() && getarg(args, 'm') != NULL && pwd->pw_dir && *pwd->pw_dir == '/' && pwd->pw_dir[1]) { 76620253Sjoerg copymkdir(pwd->pw_dir, cnf->dotdir, 0755, pwd->pw_uid, pwd->pw_gid); 76720253Sjoerg pw_log(cnf, mode, W_USER, "%s(%ld) home %s made", 76820253Sjoerg pwd->pw_name, (long) pwd->pw_uid, pwd->pw_dir); 76920253Sjoerg } 77052527Sdavidn 77182868Sdd 77282868Sdd /* 77382868Sdd * Finally, send mail to the new user as well, if we are asked to 77482868Sdd */ 77582868Sdd if (mode == M_ADD && !PWALTDIR() && cnf->newmail && *cnf->newmail && (fp = fopen(cnf->newmail, "r")) != NULL) { 77682868Sdd FILE *pfp = popen(_PATH_SENDMAIL " -t", "w"); 77782868Sdd 77882868Sdd if (pfp == NULL) 77982868Sdd warn("sendmail"); 78082868Sdd else { 78182868Sdd fprintf(pfp, "From: root\n" "To: %s\n" "Subject: Welcome!\n\n", pwd->pw_name); 78282868Sdd while (fgets(line, sizeof(line), fp) != NULL) { 78382868Sdd /* Do substitutions? */ 78482868Sdd fputs(line, pfp); 78582868Sdd } 78682868Sdd pclose(pfp); 78782868Sdd pw_log(cnf, mode, W_USER, "%s(%ld) new user mail sent", 78882868Sdd pwd->pw_name, (long) pwd->pw_uid); 78982868Sdd } 79082868Sdd fclose(fp); 79182868Sdd } 79282868Sdd 79320267Sjoerg return EXIT_SUCCESS; 79420253Sjoerg} 79520253Sjoerg 79620253Sjoerg 79720253Sjoergstatic uid_t 79820253Sjoergpw_uidpolicy(struct userconf * cnf, struct cargs * args) 79920253Sjoerg{ 80020253Sjoerg struct passwd *pwd; 80120253Sjoerg uid_t uid = (uid_t) - 1; 80220253Sjoerg struct carg *a_uid = getarg(args, 'u'); 80320253Sjoerg 80420253Sjoerg /* 80520253Sjoerg * Check the given uid, if any 80620253Sjoerg */ 80720253Sjoerg if (a_uid != NULL) { 80820253Sjoerg uid = (uid_t) atol(a_uid->val); 80920253Sjoerg 81044229Sdavidn if ((pwd = GETPWUID(uid)) != NULL && getarg(args, 'o') == NULL) 81130259Scharnier errx(EX_DATAERR, "uid `%ld' has already been allocated", (long) pwd->pw_uid); 81220253Sjoerg } else { 81320253Sjoerg struct bitmap bm; 81420253Sjoerg 81520253Sjoerg /* 81620253Sjoerg * We need to allocate the next available uid under one of 81720253Sjoerg * two policies a) Grab the first unused uid b) Grab the 81820253Sjoerg * highest possible unused uid 81920253Sjoerg */ 82020253Sjoerg if (cnf->min_uid >= cnf->max_uid) { /* Sanity 82120253Sjoerg * claus^H^H^H^Hheck */ 82220253Sjoerg cnf->min_uid = 1000; 82320253Sjoerg cnf->max_uid = 32000; 82420253Sjoerg } 82520253Sjoerg bm = bm_alloc(cnf->max_uid - cnf->min_uid + 1); 82620253Sjoerg 82720253Sjoerg /* 82820253Sjoerg * Now, let's fill the bitmap from the password file 82920253Sjoerg */ 83044229Sdavidn SETPWENT(); 83144229Sdavidn while ((pwd = GETPWENT()) != NULL) 83244229Sdavidn if (pwd->pw_uid >= (uid_t) cnf->min_uid && pwd->pw_uid <= (uid_t) cnf->max_uid) 83320253Sjoerg bm_setbit(&bm, pwd->pw_uid - cnf->min_uid); 83444229Sdavidn ENDPWENT(); 83520253Sjoerg 83620253Sjoerg /* 83720253Sjoerg * Then apply the policy, with fallback to reuse if necessary 83820253Sjoerg */ 83920253Sjoerg if (cnf->reuse_uids || (uid = (uid_t) (bm_lastset(&bm) + cnf->min_uid + 1)) > cnf->max_uid) 84020253Sjoerg uid = (uid_t) (bm_firstunset(&bm) + cnf->min_uid); 84120253Sjoerg 84220253Sjoerg /* 84320253Sjoerg * Another sanity check 84420253Sjoerg */ 84520253Sjoerg if (uid < cnf->min_uid || uid > cnf->max_uid) 84630259Scharnier errx(EX_SOFTWARE, "unable to allocate a new uid - range fully used"); 84720253Sjoerg bm_dealloc(&bm); 84820253Sjoerg } 84920253Sjoerg return uid; 85020253Sjoerg} 85120253Sjoerg 85220253Sjoerg 85320253Sjoergstatic uid_t 85420253Sjoergpw_gidpolicy(struct userconf * cnf, struct cargs * args, char *nam, gid_t prefer) 85520253Sjoerg{ 85620253Sjoerg struct group *grp; 85720253Sjoerg gid_t gid = (uid_t) - 1; 85820253Sjoerg struct carg *a_gid = getarg(args, 'g'); 85920253Sjoerg 86020253Sjoerg /* 86120253Sjoerg * If no arg given, see if default can help out 86220253Sjoerg */ 86320253Sjoerg if (a_gid == NULL && cnf->default_group && *cnf->default_group) 86420253Sjoerg a_gid = addarg(args, 'g', cnf->default_group); 86520253Sjoerg 86620253Sjoerg /* 86720253Sjoerg * Check the given gid, if any 86820253Sjoerg */ 86944229Sdavidn SETGRENT(); 87020253Sjoerg if (a_gid != NULL) { 87144229Sdavidn if ((grp = GETGRNAM(a_gid->val)) == NULL) { 87220253Sjoerg gid = (gid_t) atol(a_gid->val); 87361957Sache if ((gid == 0 && !isdigit((unsigned char)*a_gid->val)) || (grp = GETGRGID(gid)) == NULL) 87430259Scharnier errx(EX_NOUSER, "group `%s' is not defined", a_gid->val); 87520253Sjoerg } 87620253Sjoerg gid = grp->gr_gid; 87744229Sdavidn } else if ((grp = GETGRNAM(nam)) != NULL && grp->gr_mem[0] == NULL) { 87820267Sjoerg gid = grp->gr_gid; /* Already created? Use it anyway... */ 87920253Sjoerg } else { 88020253Sjoerg struct cargs grpargs; 88120253Sjoerg char tmp[32]; 88220253Sjoerg 88320253Sjoerg LIST_INIT(&grpargs); 88420253Sjoerg addarg(&grpargs, 'n', nam); 88520253Sjoerg 88620253Sjoerg /* 88720253Sjoerg * We need to auto-create a group with the user's name. We 88820253Sjoerg * can send all the appropriate output to our sister routine 88920253Sjoerg * bit first see if we can create a group with gid==uid so we 89020253Sjoerg * can keep the user and group ids in sync. We purposely do 89120253Sjoerg * NOT check the gid range if we can force the sync. If the 89220253Sjoerg * user's name dups an existing group, then the group add 89320253Sjoerg * function will happily handle that case for us and exit. 89420253Sjoerg */ 89544229Sdavidn if (GETGRGID(prefer) == NULL) { 89620253Sjoerg sprintf(tmp, "%lu", (unsigned long) prefer); 89720253Sjoerg addarg(&grpargs, 'g', tmp); 89820253Sjoerg } 89920267Sjoerg if (getarg(args, 'N')) 90020267Sjoerg { 90120267Sjoerg addarg(&grpargs, 'N', NULL); 90220267Sjoerg addarg(&grpargs, 'q', NULL); 90320267Sjoerg gid = pw_group(cnf, M_NEXT, &grpargs); 90420267Sjoerg } 90520267Sjoerg else 90620267Sjoerg { 90720267Sjoerg pw_group(cnf, M_ADD, &grpargs); 90844229Sdavidn if ((grp = GETGRNAM(nam)) != NULL) 90920267Sjoerg gid = grp->gr_gid; 91020267Sjoerg } 91170486Sben a_gid = LIST_FIRST(&grpargs); 91220253Sjoerg while (a_gid != NULL) { 91370486Sben struct carg *t = LIST_NEXT(a_gid, list); 91420253Sjoerg LIST_REMOVE(a_gid, list); 91520253Sjoerg a_gid = t; 91620253Sjoerg } 91720253Sjoerg } 91844229Sdavidn ENDGRENT(); 91920253Sjoerg return gid; 92020253Sjoerg} 92120253Sjoerg 92220253Sjoerg 92320253Sjoergstatic time_t 92420253Sjoergpw_pwdpolicy(struct userconf * cnf, struct cargs * args) 92520253Sjoerg{ 92620253Sjoerg time_t result = 0; 92720253Sjoerg time_t now = time(NULL); 92827831Sdavidn struct carg *arg = getarg(args, 'p'); 92920253Sjoerg 93020253Sjoerg if (arg != NULL) { 93120253Sjoerg if ((result = parse_date(now, arg->val)) == now) 93230259Scharnier errx(EX_DATAERR, "invalid date/time `%s'", arg->val); 93320253Sjoerg } else if (cnf->password_days > 0) 93420253Sjoerg result = now + ((long) cnf->password_days * 86400L); 93520253Sjoerg return result; 93620253Sjoerg} 93720253Sjoerg 93820253Sjoerg 93920253Sjoergstatic time_t 94020253Sjoergpw_exppolicy(struct userconf * cnf, struct cargs * args) 94120253Sjoerg{ 94220253Sjoerg time_t result = 0; 94320253Sjoerg time_t now = time(NULL); 94420253Sjoerg struct carg *arg = getarg(args, 'e'); 94520253Sjoerg 94620253Sjoerg if (arg != NULL) { 94720253Sjoerg if ((result = parse_date(now, arg->val)) == now) 94830259Scharnier errx(EX_DATAERR, "invalid date/time `%s'", arg->val); 94920253Sjoerg } else if (cnf->expire_days > 0) 95020253Sjoerg result = now + ((long) cnf->expire_days * 86400L); 95120253Sjoerg return result; 95220253Sjoerg} 95320253Sjoerg 95420253Sjoerg 95520253Sjoergstatic char * 95620253Sjoergpw_homepolicy(struct userconf * cnf, struct cargs * args, char const * user) 95720253Sjoerg{ 95820253Sjoerg struct carg *arg = getarg(args, 'd'); 95920253Sjoerg 96020253Sjoerg if (arg) 96120253Sjoerg return arg->val; 96220253Sjoerg else { 96320253Sjoerg static char home[128]; 96420253Sjoerg 96520253Sjoerg if (cnf->home == NULL || *cnf->home == '\0') 96630259Scharnier errx(EX_CONFIG, "no base home directory set"); 96720253Sjoerg sprintf(home, "%s/%s", cnf->home, user); 96820253Sjoerg return home; 96920253Sjoerg } 97020253Sjoerg} 97120253Sjoerg 97220253Sjoergstatic char * 97320253Sjoergshell_path(char const * path, char *shells[], char *sh) 97420253Sjoerg{ 97520253Sjoerg if (sh != NULL && (*sh == '/' || *sh == '\0')) 97620253Sjoerg return sh; /* specified full path or forced none */ 97720253Sjoerg else { 97820253Sjoerg char *p; 97920253Sjoerg char paths[_UC_MAXLINE]; 98020253Sjoerg 98120253Sjoerg /* 98220253Sjoerg * We need to search paths 98320253Sjoerg */ 984130633Srobert strlcpy(paths, path, sizeof(paths)); 98520253Sjoerg for (p = strtok(paths, ": \t\r\n"); p != NULL; p = strtok(NULL, ": \t\r\n")) { 98620253Sjoerg int i; 98720253Sjoerg static char shellpath[256]; 98820253Sjoerg 98920253Sjoerg if (sh != NULL) { 99020253Sjoerg sprintf(shellpath, "%s/%s", p, sh); 99120253Sjoerg if (access(shellpath, X_OK) == 0) 99220253Sjoerg return shellpath; 99320253Sjoerg } else 99420253Sjoerg for (i = 0; i < _UC_MAXSHELLS && shells[i] != NULL; i++) { 99520253Sjoerg sprintf(shellpath, "%s/%s", p, shells[i]); 99620253Sjoerg if (access(shellpath, X_OK) == 0) 99720253Sjoerg return shellpath; 99820253Sjoerg } 99920253Sjoerg } 100020253Sjoerg if (sh == NULL) 100130259Scharnier errx(EX_OSFILE, "can't find shell `%s' in shell paths", sh); 100230259Scharnier errx(EX_CONFIG, "no default shell available or defined"); 100320253Sjoerg return NULL; 100420253Sjoerg } 100520253Sjoerg} 100620253Sjoerg 100720253Sjoerg 100820253Sjoergstatic char * 100920253Sjoergpw_shellpolicy(struct userconf * cnf, struct cargs * args, char *newshell) 101020253Sjoerg{ 101120253Sjoerg char *sh = newshell; 101220253Sjoerg struct carg *arg = getarg(args, 's'); 101320253Sjoerg 101420253Sjoerg if (newshell == NULL && arg != NULL) 101520253Sjoerg sh = arg->val; 101620253Sjoerg return shell_path(cnf->shelldir, cnf->shells, sh ? sh : cnf->shell_default); 101720253Sjoerg} 101820253Sjoerg 101920253Sjoergstatic char const chars[] = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ."; 102020253Sjoerg 102120253Sjoergchar * 102220253Sjoergpw_pwcrypt(char *password) 102320253Sjoerg{ 102420253Sjoerg int i; 102520253Sjoerg char salt[12]; 102620253Sjoerg 102720253Sjoerg static char buf[256]; 102820253Sjoerg 102920253Sjoerg /* 103020253Sjoerg * Calculate a salt value 103120253Sjoerg */ 103220253Sjoerg for (i = 0; i < 8; i++) 103373563Skris salt[i] = chars[arc4random() % 63]; 103420253Sjoerg salt[i] = '\0'; 103520253Sjoerg 103620253Sjoerg return strcpy(buf, crypt(password, salt)); 103720253Sjoerg} 103820253Sjoerg 103920590Sdavidn#if defined(USE_MD5RAND) 104020555Sdavidnu_char * 104120590Sdavidnpw_getrand(u_char *buf, int len) /* cryptographically secure rng */ 104220555Sdavidn{ 104320590Sdavidn int i; 104420590Sdavidn for (i=0;i<len;i+=16) { 104520590Sdavidn u_char ubuf[16]; 104620590Sdavidn 104720590Sdavidn MD5_CTX md5_ctx; 104820590Sdavidn struct timeval tv, tvo; 104920590Sdavidn struct rusage ru; 105020590Sdavidn int n=0; 105120590Sdavidn int t; 105220590Sdavidn 105320590Sdavidn MD5Init (&md5_ctx); 105420590Sdavidn t=getpid(); 105520590Sdavidn MD5Update (&md5_ctx, (u_char*)&t, sizeof t); 105620590Sdavidn t=getppid(); 105720590Sdavidn MD5Update (&md5_ctx, (u_char*)&t, sizeof t); 105820590Sdavidn gettimeofday (&tvo, NULL); 105920590Sdavidn do { 106020590Sdavidn getrusage (RUSAGE_SELF, &ru); 106120590Sdavidn MD5Update (&md5_ctx, (u_char*)&ru, sizeof ru); 106220590Sdavidn gettimeofday (&tv, NULL); 106320590Sdavidn MD5Update (&md5_ctx, (u_char*)&tv, sizeof tv); 106420590Sdavidn } while (n++<20 || tv.tv_usec-tvo.tv_usec<100*1000); 106520590Sdavidn MD5Final (ubuf, &md5_ctx); 106682047Sjoerg memcpy(buf+i, ubuf, MIN(16, len-i)); 106720590Sdavidn } 106820590Sdavidn return buf; 106920555Sdavidn} 107020253Sjoerg 107120590Sdavidn#else /* Portable version */ 107220590Sdavidn 107320590Sdavidnstatic u_char * 107420590Sdavidnpw_getrand(u_char *buf, int len) 107520590Sdavidn{ 107620590Sdavidn int i; 107720590Sdavidn 107820590Sdavidn for (i = 0; i < len; i++) { 1079110667Sache unsigned long val = arc4random(); 108020590Sdavidn /* Use all bits in the random value */ 108120590Sdavidn buf[i]=(u_char)((val >> 24) ^ (val >> 16) ^ (val >> 8) ^ val); 108220590Sdavidn } 108320590Sdavidn return buf; 108420590Sdavidn} 108520590Sdavidn 108620590Sdavidn#endif 108720590Sdavidn 108820253Sjoergstatic char * 108920253Sjoergpw_password(struct userconf * cnf, struct cargs * args, char const * user) 109020253Sjoerg{ 109120253Sjoerg int i, l; 109220253Sjoerg char pwbuf[32]; 109320555Sdavidn u_char rndbuf[sizeof pwbuf]; 109420253Sjoerg 109520253Sjoerg switch (cnf->default_password) { 109620253Sjoerg case -1: /* Random password */ 109773563Skris l = (arc4random() % 8 + 8); /* 8 - 16 chars */ 109820555Sdavidn pw_getrand(rndbuf, l); 109920253Sjoerg for (i = 0; i < l; i++) 110042245Sbillf pwbuf[i] = chars[rndbuf[i] % (sizeof(chars)-1)]; 110120253Sjoerg pwbuf[i] = '\0'; 110220253Sjoerg 110320253Sjoerg /* 110420253Sjoerg * We give this information back to the user 110520253Sjoerg */ 1106124382Siedowse if (getarg(args, 'h') == NULL && getarg(args, 'H') == NULL && 1107124382Siedowse getarg(args, 'N') == NULL) { 110861957Sache if (isatty(STDOUT_FILENO)) 110920712Sdavidn printf("Password for '%s' is: ", user); 111020253Sjoerg printf("%s\n", pwbuf); 111120253Sjoerg fflush(stdout); 111220253Sjoerg } 111320253Sjoerg break; 111420253Sjoerg 111520253Sjoerg case -2: /* No password at all! */ 111620253Sjoerg return ""; 111720253Sjoerg 111820253Sjoerg case 0: /* No login - default */ 111920253Sjoerg default: 112020253Sjoerg return "*"; 112120253Sjoerg 112220253Sjoerg case 1: /* user's name */ 1123130633Srobert strlcpy(pwbuf, user, sizeof(pwbuf)); 112420253Sjoerg break; 112520253Sjoerg } 112620253Sjoerg return pw_pwcrypt(pwbuf); 112720253Sjoerg} 112820253Sjoerg 112920253Sjoerg 113020253Sjoergstatic int 113144386Sdavidnprint_user(struct passwd * pwd, int pretty, int v7) 113220253Sjoerg{ 113320253Sjoerg if (!pretty) { 113420253Sjoerg char buf[_UC_MAXLINE]; 113520253Sjoerg 113644386Sdavidn fmtpwentry(buf, pwd, v7 ? PWF_PASSWD : PWF_STANDARD); 113720253Sjoerg fputs(buf, stdout); 113820253Sjoerg } else { 113920267Sjoerg int j; 114020253Sjoerg char *p; 114144229Sdavidn struct group *grp = GETGRGID(pwd->pw_gid); 114220253Sjoerg char uname[60] = "User &", office[60] = "[None]", 114320253Sjoerg wphone[60] = "[None]", hphone[60] = "[None]"; 114420590Sdavidn char acexpire[32] = "[None]", pwexpire[32] = "[None]"; 114520590Sdavidn struct tm * tptr; 114620253Sjoerg 114720253Sjoerg if ((p = strtok(pwd->pw_gecos, ",")) != NULL) { 1148130633Srobert strlcpy(uname, p, sizeof(uname)); 114920253Sjoerg if ((p = strtok(NULL, ",")) != NULL) { 1150130633Srobert strlcpy(office, p, sizeof(office)); 115120253Sjoerg if ((p = strtok(NULL, ",")) != NULL) { 1152130633Srobert strlcpy(wphone, p, sizeof(wphone)); 115320253Sjoerg if ((p = strtok(NULL, "")) != NULL) { 1154130633Srobert strlcpy(hphone, p, 1155130633Srobert sizeof(hphone)); 115620253Sjoerg } 115720253Sjoerg } 115820253Sjoerg } 115920253Sjoerg } 116020253Sjoerg /* 116120253Sjoerg * Handle '&' in gecos field 116220253Sjoerg */ 116320253Sjoerg if ((p = strchr(uname, '&')) != NULL) { 116420253Sjoerg int l = strlen(pwd->pw_name); 116520253Sjoerg int m = strlen(p); 116620253Sjoerg 116720253Sjoerg memmove(p + l, p + 1, m); 116820253Sjoerg memmove(p, pwd->pw_name, l); 116961957Sache *p = (char) toupper((unsigned char)*p); 117020253Sjoerg } 117120590Sdavidn if (pwd->pw_expire > (time_t)0 && (tptr = localtime(&pwd->pw_expire)) != NULL) 117274569Sache strftime(acexpire, sizeof acexpire, "%c", tptr); 117361957Sache if (pwd->pw_change > (time_t)0 && (tptr = localtime(&pwd->pw_change)) != NULL) 117474569Sache strftime(pwexpire, sizeof pwexpire, "%c", tptr); 117522394Sdavidn printf("Login Name: %-15s #%-12ld Group: %-15s #%ld\n" 117620747Sdavidn " Full Name: %s\n" 117720747Sdavidn " Home: %-26.26s Class: %s\n" 117820747Sdavidn " Shell: %-26.26s Office: %s\n" 117920747Sdavidn "Work Phone: %-26.26s Home Phone: %s\n" 118020747Sdavidn "Acc Expire: %-26.26s Pwd Expire: %s\n", 118120253Sjoerg pwd->pw_name, (long) pwd->pw_uid, 118220253Sjoerg grp ? grp->gr_name : "(invalid)", (long) pwd->pw_gid, 118320253Sjoerg uname, pwd->pw_dir, pwd->pw_class, 118420590Sdavidn pwd->pw_shell, office, wphone, hphone, 118520590Sdavidn acexpire, pwexpire); 118644229Sdavidn SETGRENT(); 118720267Sjoerg j = 0; 118844229Sdavidn while ((grp=GETGRENT()) != NULL) 118920267Sjoerg { 119020267Sjoerg int i = 0; 119120747Sdavidn while (grp->gr_mem[i] != NULL) 119220267Sjoerg { 119320267Sjoerg if (strcmp(grp->gr_mem[i], pwd->pw_name)==0) 119420267Sjoerg { 119520747Sdavidn printf(j++ == 0 ? " Groups: %s" : ",%s", grp->gr_name); 119620267Sjoerg break; 119720267Sjoerg } 119820267Sjoerg ++i; 119920267Sjoerg } 120020267Sjoerg } 120144229Sdavidn ENDGRENT(); 120261957Sache printf("%s", j ? "\n" : ""); 120320253Sjoerg } 120420267Sjoerg return EXIT_SUCCESS; 120520253Sjoerg} 120620253Sjoerg 120720679Sdavidnchar * 120820679Sdavidnpw_checkname(u_char *name, int gecos) 120920253Sjoerg{ 1210109961Sgad char showch[8]; 1211109961Sgad u_char const *badchars, *ch, *showtype; 1212109961Sgad int reject; 121320253Sjoerg 1214109961Sgad ch = name; 1215109961Sgad reject = 0; 1216109961Sgad if (gecos) { 1217109961Sgad /* See if the name is valid as a gecos (comment) field. */ 1218109961Sgad badchars = ":!@"; 1219109961Sgad showtype = "gecos field"; 1220109961Sgad } else { 1221109961Sgad /* See if the name is valid as a userid or group. */ 1222109961Sgad badchars = " ,\t:+&#%$^()!@~*?<>=|\\/\""; 1223109961Sgad showtype = "userid/group name"; 1224109961Sgad /* Userids and groups can not have a leading '-'. */ 1225109961Sgad if (*ch == '-') 1226109961Sgad reject = 1; 122720253Sjoerg } 1228109961Sgad if (!reject) { 1229109961Sgad while (*ch) { 1230109961Sgad if (strchr(badchars, *ch) != NULL || *ch < ' ' || 1231109961Sgad *ch == 127) { 1232109961Sgad reject = 1; 1233109961Sgad break; 1234109961Sgad } 1235109961Sgad /* 8-bit characters are only allowed in GECOS fields */ 1236109961Sgad if (!gecos && (*ch & 0x80)) { 1237109961Sgad reject = 1; 1238109961Sgad break; 1239109961Sgad } 1240109961Sgad ch++; 1241109961Sgad } 1242109961Sgad } 1243109961Sgad /* 1244109961Sgad * A `$' is allowed as the final character for userids and groups, 1245109961Sgad * mainly for the benefit of samba. 1246109961Sgad */ 1247109961Sgad if (reject && !gecos) { 1248109961Sgad if (*ch == '$' && *(ch + 1) == '\0') { 1249109961Sgad reject = 0; 1250109961Sgad ch++; 1251109961Sgad } 1252109961Sgad } 1253109961Sgad if (reject) { 1254109961Sgad snprintf(showch, sizeof(showch), (*ch >= ' ' && *ch < 127) 1255109961Sgad ? "`%c'" : "0x%02x", *ch); 1256109961Sgad errx(EX_DATAERR, "invalid character %s at position %d in %s", 1257109961Sgad showch, (ch - name), showtype); 1258109961Sgad } 1259109961Sgad if (!gecos && (ch - name) > LOGNAMESIZE) 1260109961Sgad errx(EX_DATAERR, "name too long `%s' (max is %d)", name, 1261109961Sgad LOGNAMESIZE); 126220679Sdavidn return (char *)name; 126320253Sjoerg} 126420253Sjoerg 126520253Sjoerg 126620253Sjoergstatic void 126720253Sjoergrmat(uid_t uid) 126820253Sjoerg{ 126920253Sjoerg DIR *d = opendir("/var/at/jobs"); 127020253Sjoerg 127120253Sjoerg if (d != NULL) { 127220253Sjoerg struct dirent *e; 127320253Sjoerg 127420253Sjoerg while ((e = readdir(d)) != NULL) { 127520253Sjoerg struct stat st; 127620253Sjoerg 127720253Sjoerg if (strncmp(e->d_name, ".lock", 5) != 0 && 127820253Sjoerg stat(e->d_name, &st) == 0 && 127920253Sjoerg !S_ISDIR(st.st_mode) && 128020253Sjoerg st.st_uid == uid) { 128120253Sjoerg char tmp[MAXPATHLEN]; 128220253Sjoerg 128320253Sjoerg sprintf(tmp, "/usr/bin/atrm %s", e->d_name); 128420253Sjoerg system(tmp); 128520253Sjoerg } 128620253Sjoerg } 128720253Sjoerg closedir(d); 128820253Sjoerg } 128920253Sjoerg} 129020747Sdavidn 129120747Sdavidnstatic void 129285145Sachermopie(char const * name) 129320747Sdavidn{ 129485145Sache static const char etcopie[] = "/etc/opiekeys"; 129585145Sache FILE *fp = fopen(etcopie, "r+"); 129620747Sdavidn 129721052Sdavidn if (fp != NULL) { 129821052Sdavidn char tmp[1024]; 129921052Sdavidn off_t atofs = 0; 130021052Sdavidn int length = strlen(name); 130120747Sdavidn 130221052Sdavidn while (fgets(tmp, sizeof tmp, fp) != NULL) { 130321052Sdavidn if (strncmp(name, tmp, length) == 0 && tmp[length]==' ') { 130421052Sdavidn if (fseek(fp, atofs, SEEK_SET) == 0) { 130521052Sdavidn fwrite("#", 1, 1, fp); /* Comment username out */ 130621052Sdavidn } 130721052Sdavidn break; 130820747Sdavidn } 130921052Sdavidn atofs = ftell(fp); 131020747Sdavidn } 131121052Sdavidn /* 131221052Sdavidn * If we got an error of any sort, don't update! 131321052Sdavidn */ 131421052Sdavidn fclose(fp); 131520747Sdavidn } 131620747Sdavidn} 131720747Sdavidn 1318