pw_user.c revision 284149
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 284149 2015-06-08 05:27:34Z bapt $"; 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> 4364918Sgreen#include <login_cap.h> 44242349Sbapt#include <pwd.h> 45242349Sbapt#include <grp.h> 46242349Sbapt#include <libutil.h> 4720253Sjoerg#include "pw.h" 4820253Sjoerg#include "bitmap.h" 4920253Sjoerg 5023318Sache#define LOGNAMESIZE (MAXLOGNAME-1) 5122394Sdavidn 5252512Sdavidnstatic char locked_str[] = "*LOCKED*"; 5324214Sache 54284111Sbaptstatic int delete_user(struct userconf *cnf, struct passwd *pwd, 55284128Sbapt char *name, int delete, int mode); 56284124Sbaptstatic int print_user(struct passwd * pwd); 57284133Sbaptstatic uid_t pw_uidpolicy(struct userconf * cnf, long id); 58284118Sbaptstatic uid_t pw_gidpolicy(struct cargs * args, char *nam, gid_t prefer); 5920253Sjoergstatic time_t pw_pwdpolicy(struct userconf * cnf, struct cargs * args); 6020253Sjoergstatic time_t pw_exppolicy(struct userconf * cnf, struct cargs * args); 6120253Sjoergstatic char *pw_homepolicy(struct userconf * cnf, struct cargs * args, char const * user); 6220253Sjoergstatic char *pw_shellpolicy(struct userconf * cnf, struct cargs * args, char *newshell); 6320253Sjoergstatic char *pw_password(struct userconf * cnf, struct cargs * args, char const * user); 6420253Sjoergstatic char *shell_path(char const * path, char *shells[], char *sh); 6520253Sjoergstatic void rmat(uid_t uid); 6685145Sachestatic void rmopie(char const * name); 6720253Sjoerg 68283961Sbaptstatic void 69284118Sbaptcreate_and_populate_homedir(int mode, struct passwd *pwd) 70283961Sbapt{ 71283961Sbapt char *homedir, *dotdir; 72284118Sbapt struct userconf *cnf = conf.userconf; 73283961Sbapt 74283961Sbapt homedir = dotdir = NULL; 75283961Sbapt 76284118Sbapt if (conf.rootdir[0] != '\0') { 77284118Sbapt asprintf(&homedir, "%s/%s", conf.rootdir, pwd->pw_dir); 78283961Sbapt if (homedir == NULL) 79283961Sbapt errx(EX_OSERR, "out of memory"); 80284118Sbapt asprintf(&dotdir, "%s/%s", conf.rootdir, cnf->dotdir); 81283961Sbapt } 82283961Sbapt 83283961Sbapt copymkdir(homedir ? homedir : pwd->pw_dir, dotdir ? dotdir: cnf->dotdir, 84283961Sbapt cnf->homemode, pwd->pw_uid, pwd->pw_gid); 85283961Sbapt pw_log(cnf, mode, W_USER, "%s(%u) home %s made", pwd->pw_name, 86283961Sbapt pwd->pw_uid, pwd->pw_dir); 87283961Sbapt} 88283961Sbapt 8920253Sjoerg/*- 9020253Sjoerg * -C config configuration file 9120253Sjoerg * -q quiet operation 9220253Sjoerg * -n name login name 9320253Sjoerg * -u uid user id 9420253Sjoerg * -c comment user name/comment 9520253Sjoerg * -d directory home directory 9620253Sjoerg * -e date account expiry date 9720253Sjoerg * -p date password expiry date 9820253Sjoerg * -g grp primary group 9920253Sjoerg * -G grp1,grp2 additional groups 10020253Sjoerg * -m [ -k dir ] create and set up home 10120253Sjoerg * -s shell name of login shell 10220253Sjoerg * -o duplicate uid ok 10320253Sjoerg * -L class user class 10420253Sjoerg * -l name new login name 10520253Sjoerg * -h fd password filehandle 106124382Siedowse * -H fd encrypted password filehandle 10720253Sjoerg * -F force print or add 10820253Sjoerg * Setting defaults: 10920253Sjoerg * -D set user defaults 11020253Sjoerg * -b dir default home root dir 11120253Sjoerg * -e period default expiry period 11220253Sjoerg * -p period default password change period 11320253Sjoerg * -g group default group 11420253Sjoerg * -G grp1,grp2.. default additional groups 11520253Sjoerg * -L class default login class 11620253Sjoerg * -k dir default home skeleton 11720253Sjoerg * -s shell default shell 11820253Sjoerg * -w method default password method 11920253Sjoerg */ 12020253Sjoerg 12120253Sjoergint 122284128Sbaptpw_user(int mode, char *name, long id, struct cargs * args) 12320253Sjoerg{ 12452527Sdavidn int rc, edited = 0; 12520253Sjoerg char *p = NULL; 12652512Sdavidn char *passtmp; 12720253Sjoerg struct carg *arg; 12820253Sjoerg struct passwd *pwd = NULL; 12920253Sjoerg struct group *grp; 13020253Sjoerg struct stat st; 131284118Sbapt struct userconf *cnf; 13220747Sdavidn char line[_PASSWORD_LEN+1]; 133283961Sbapt char path[MAXPATHLEN]; 13482868Sdd FILE *fp; 135167919Sle char *dmode_c; 136167919Sle void *set = NULL; 13720253Sjoerg 13820253Sjoerg static struct passwd fakeuser = 13920253Sjoerg { 14020253Sjoerg NULL, 14120253Sjoerg "*", 14220253Sjoerg -1, 14320253Sjoerg -1, 14420253Sjoerg 0, 14520253Sjoerg "", 14620253Sjoerg "User &", 14756000Sdavidn "/nonexistent", 14820253Sjoerg "/bin/sh", 14920253Sjoerg 0 15056000Sdavidn#if defined(__FreeBSD__) 15156000Sdavidn ,0 15256000Sdavidn#endif 15320253Sjoerg }; 15420253Sjoerg 155284118Sbapt cnf = conf.userconf; 15652512Sdavidn 15720253Sjoerg /* 15820267Sjoerg * With M_NEXT, we only need to return the 15920267Sjoerg * next uid to stdout 16020267Sjoerg */ 161284149Sbapt if (mode == M_NEXT) 162284149Sbapt { 163284149Sbapt uid_t next = pw_uidpolicy(cnf, id); 164284149Sbapt if (getarg(args, 'q')) 165284149Sbapt return next; 166284149Sbapt printf("%u:", next); 167284128Sbapt pw_group(mode, name, -1, args); 168284149Sbapt return EXIT_SUCCESS; 16920267Sjoerg } 17020267Sjoerg 17120267Sjoerg /* 17220253Sjoerg * We can do all of the common legwork here 17320253Sjoerg */ 17420253Sjoerg 17520253Sjoerg if ((arg = getarg(args, 'b')) != NULL) { 17620267Sjoerg cnf->home = arg->val; 17720253Sjoerg } 17821052Sdavidn 179167919Sle if ((arg = getarg(args, 'M')) != NULL) { 180167919Sle dmode_c = arg->val; 181167919Sle if ((set = setmode(dmode_c)) == NULL) 182167919Sle errx(EX_DATAERR, "invalid directory creation mode '%s'", 183167919Sle dmode_c); 184219408Sjkim cnf->homemode = getmode(set, _DEF_DIRMODE); 185167919Sle free(set); 186168044Sle } 187167919Sle 18821052Sdavidn /* 18921052Sdavidn * If we'll need to use it or we're updating it, 19021052Sdavidn * then create the base home directory if necessary 19121052Sdavidn */ 192224535Sdelphij if (arg != NULL || getarg(args, 'm') != NULL) { 19321052Sdavidn int l = strlen(cnf->home); 19421052Sdavidn 19521052Sdavidn if (l > 1 && cnf->home[l-1] == '/') /* Shave off any trailing path delimiter */ 19621052Sdavidn cnf->home[--l] = '\0'; 19721052Sdavidn 19821052Sdavidn if (l < 2 || *cnf->home != '/') /* Check for absolute path name */ 19930259Scharnier errx(EX_DATAERR, "invalid base directory for home '%s'", cnf->home); 20021052Sdavidn 20121052Sdavidn if (stat(cnf->home, &st) == -1) { 20221052Sdavidn char dbuf[MAXPATHLEN]; 20321052Sdavidn 20421242Sdavidn /* 20521242Sdavidn * This is a kludge especially for Joerg :) 20621242Sdavidn * If the home directory would be created in the root partition, then 20721242Sdavidn * we really create it under /usr which is likely to have more space. 20821242Sdavidn * But we create a symlink from cnf->home -> "/usr" -> cnf->home 20921242Sdavidn */ 21021242Sdavidn if (strchr(cnf->home+1, '/') == NULL) { 211282683Sbapt snprintf(dbuf, MAXPATHLEN, "/usr%s", cnf->home); 212219408Sjkim if (mkdir(dbuf, _DEF_DIRMODE) != -1 || errno == EEXIST) { 21321242Sdavidn chown(dbuf, 0, 0); 214148584Spjd /* 215148584Spjd * Skip first "/" and create symlink: 216148584Spjd * /home -> usr/home 217148584Spjd */ 218148584Spjd symlink(dbuf+1, cnf->home); 21921242Sdavidn } 22021242Sdavidn /* If this falls, fall back to old method */ 22121242Sdavidn } 222130633Srobert strlcpy(dbuf, cnf->home, sizeof(dbuf)); 223130633Srobert p = dbuf; 22421242Sdavidn if (stat(dbuf, &st) == -1) { 225252377Skientzle while ((p = strchr(p + 1, '/')) != NULL) { 22621242Sdavidn *p = '\0'; 22721242Sdavidn if (stat(dbuf, &st) == -1) { 228219408Sjkim if (mkdir(dbuf, _DEF_DIRMODE) == -1) 22921242Sdavidn goto direrr; 23021242Sdavidn chown(dbuf, 0, 0); 23121242Sdavidn } else if (!S_ISDIR(st.st_mode)) 23230259Scharnier errx(EX_OSFILE, "'%s' (root home parent) is not a directory", dbuf); 23321242Sdavidn *p = '/'; 23421242Sdavidn } 23521052Sdavidn } 23621242Sdavidn if (stat(dbuf, &st) == -1) { 237219408Sjkim if (mkdir(dbuf, _DEF_DIRMODE) == -1) { 23830259Scharnier direrr: err(EX_OSFILE, "mkdir '%s'", dbuf); 23921052Sdavidn } 24021052Sdavidn chown(dbuf, 0, 0); 24121052Sdavidn } 24221052Sdavidn } else if (!S_ISDIR(st.st_mode)) 24330259Scharnier errx(EX_OSFILE, "root home `%s' is not a directory", cnf->home); 24421052Sdavidn } 24521052Sdavidn 24620253Sjoerg if ((arg = getarg(args, 'e')) != NULL) 24720253Sjoerg cnf->expire_days = atoi(arg->val); 24820253Sjoerg 24921330Sdavidn if ((arg = getarg(args, 'y')) != NULL) 25021330Sdavidn cnf->nispasswd = arg->val; 25121330Sdavidn 25220253Sjoerg if ((arg = getarg(args, 'p')) != NULL && arg->val) 25320253Sjoerg cnf->password_days = atoi(arg->val); 25420253Sjoerg 25520253Sjoerg if ((arg = getarg(args, 'g')) != NULL) { 25663596Sdavidn if (!*(p = arg->val)) /* Handle empty group list specially */ 25763596Sdavidn cnf->default_group = ""; 25863596Sdavidn else { 25963596Sdavidn if ((grp = GETGRNAM(p)) == NULL) { 26063596Sdavidn if (!isdigit((unsigned char)*p) || (grp = GETGRGID((gid_t) atoi(p))) == NULL) 26163596Sdavidn errx(EX_NOUSER, "group `%s' does not exist", p); 26263596Sdavidn } 26363596Sdavidn cnf->default_group = newstr(grp->gr_name); 26420253Sjoerg } 26520253Sjoerg } 26620253Sjoerg if ((arg = getarg(args, 'L')) != NULL) 267284110Sbapt cnf->default_class = pw_checkname(arg->val, 0); 26820253Sjoerg 26920253Sjoerg if ((arg = getarg(args, 'G')) != NULL && arg->val) { 27052527Sdavidn int i = 0; 27120253Sjoerg 27220747Sdavidn for (p = strtok(arg->val, ", \t"); p != NULL; p = strtok(NULL, ", \t")) { 27344229Sdavidn if ((grp = GETGRNAM(p)) == NULL) { 27461957Sache if (!isdigit((unsigned char)*p) || (grp = GETGRGID((gid_t) atoi(p))) == NULL) 27530259Scharnier errx(EX_NOUSER, "group `%s' does not exist", p); 27620253Sjoerg } 27720747Sdavidn if (extendarray(&cnf->groups, &cnf->numgroups, i + 2) != -1) 27820747Sdavidn cnf->groups[i++] = newstr(grp->gr_name); 27920253Sjoerg } 28020747Sdavidn while (i < cnf->numgroups) 28120253Sjoerg cnf->groups[i++] = NULL; 28220253Sjoerg } 28352527Sdavidn 28420253Sjoerg if ((arg = getarg(args, 'k')) != NULL) { 28526088Sdavidn if (stat(cnf->dotdir = arg->val, &st) == -1 || !S_ISDIR(st.st_mode)) 28630259Scharnier errx(EX_OSFILE, "skeleton `%s' is not a directory or does not exist", cnf->dotdir); 28720253Sjoerg } 28852527Sdavidn 28920253Sjoerg if ((arg = getarg(args, 's')) != NULL) 29020253Sjoerg cnf->shell_default = arg->val; 29120253Sjoerg 29263600Sdavidn if ((arg = getarg(args, 'w')) != NULL) 29363600Sdavidn cnf->default_password = boolean_val(arg->val, cnf->default_password); 29420253Sjoerg if (mode == M_ADD && getarg(args, 'D')) { 295284135Sbapt if (name != NULL) 29630259Scharnier errx(EX_DATAERR, "can't combine `-D' with `-n name'"); 29720253Sjoerg if ((arg = getarg(args, 'u')) != NULL && (p = strtok(arg->val, ", \t")) != NULL) { 29820253Sjoerg if ((cnf->min_uid = (uid_t) atoi(p)) == 0) 29920253Sjoerg cnf->min_uid = 1000; 30020253Sjoerg if ((p = strtok(NULL, " ,\t")) == NULL || (cnf->max_uid = (uid_t) atoi(p)) < cnf->min_uid) 30120253Sjoerg cnf->max_uid = 32000; 30220253Sjoerg } 30320253Sjoerg if ((arg = getarg(args, 'i')) != NULL && (p = strtok(arg->val, ", \t")) != NULL) { 30420253Sjoerg if ((cnf->min_gid = (gid_t) atoi(p)) == 0) 30520253Sjoerg cnf->min_gid = 1000; 30620253Sjoerg if ((p = strtok(NULL, " ,\t")) == NULL || (cnf->max_gid = (gid_t) atoi(p)) < cnf->min_gid) 30720253Sjoerg cnf->max_gid = 32000; 30820253Sjoerg } 30920253Sjoerg 310284135Sbapt if (write_userconfig(conf.config)) 311284135Sbapt return (EXIT_SUCCESS); 312283814Sbapt err(EX_IOERR, "config udpate"); 31320253Sjoerg } 31452527Sdavidn 31520253Sjoerg if (mode == M_PRINT && getarg(args, 'a')) { 31644229Sdavidn SETPWENT(); 31744229Sdavidn while ((pwd = GETPWENT()) != NULL) 318284124Sbapt print_user(pwd); 31944229Sdavidn ENDPWENT(); 32020267Sjoerg return EXIT_SUCCESS; 32120253Sjoerg } 32252527Sdavidn 323284128Sbapt if (name != NULL) 324284128Sbapt pwd = GETPWNAM(pw_checkname(name, 0)); 32520253Sjoerg 326284128Sbapt if (id < 0 && name == NULL) 327284128Sbapt errx(EX_DATAERR, "user name or id required"); 32820253Sjoerg 32920253Sjoerg /* 33020253Sjoerg * Update, delete & print require that the user exists 33120253Sjoerg */ 33252512Sdavidn if (mode == M_UPDATE || mode == M_DELETE || 33352512Sdavidn mode == M_PRINT || mode == M_LOCK || mode == M_UNLOCK) { 33452527Sdavidn 335284128Sbapt if (name == NULL && pwd == NULL) /* Try harder */ 336284128Sbapt pwd = GETPWUID(id); 33720253Sjoerg 33820253Sjoerg if (pwd == NULL) { 33920253Sjoerg if (mode == M_PRINT && getarg(args, 'F')) { 340284128Sbapt fakeuser.pw_name = name ? name : "nouser"; 341284128Sbapt fakeuser.pw_uid = (uid_t) id; 342284126Sbapt return print_user(&fakeuser); 34320253Sjoerg } 344284128Sbapt if (name == NULL) 345284128Sbapt errx(EX_NOUSER, "no such uid `%ld'", id); 346284128Sbapt errx(EX_NOUSER, "no such user `%s'", name); 34720253Sjoerg } 34852527Sdavidn 349284128Sbapt if (name == NULL) 350284128Sbapt name = pwd->pw_name; 35120253Sjoerg 35220253Sjoerg /* 35352512Sdavidn * The M_LOCK and M_UNLOCK functions simply add or remove 35452512Sdavidn * a "*LOCKED*" prefix from in front of the password to 35552512Sdavidn * prevent it decoding correctly, and therefore prevents 35652512Sdavidn * access. Of course, this only prevents access via 35752512Sdavidn * password authentication (not ssh, kerberos or any 35852512Sdavidn * other method that does not use the UNIX password) but 35952512Sdavidn * that is a known limitation. 36052512Sdavidn */ 36152512Sdavidn 36252512Sdavidn if (mode == M_LOCK) { 36352512Sdavidn if (strncmp(pwd->pw_passwd, locked_str, sizeof(locked_str)-1) == 0) 36452512Sdavidn errx(EX_DATAERR, "user '%s' is already locked", pwd->pw_name); 365282685Sbapt asprintf(&passtmp, "%s%s", locked_str, pwd->pw_passwd); 36652512Sdavidn if (passtmp == NULL) /* disaster */ 36752512Sdavidn errx(EX_UNAVAILABLE, "out of memory"); 36852512Sdavidn pwd->pw_passwd = passtmp; 36952527Sdavidn edited = 1; 37052512Sdavidn } else if (mode == M_UNLOCK) { 37152512Sdavidn if (strncmp(pwd->pw_passwd, locked_str, sizeof(locked_str)-1) != 0) 37252512Sdavidn errx(EX_DATAERR, "user '%s' is not locked", pwd->pw_name); 37352512Sdavidn pwd->pw_passwd += sizeof(locked_str)-1; 37452527Sdavidn edited = 1; 375284111Sbapt } else if (mode == M_DELETE) 376284128Sbapt return (delete_user(cnf, pwd, name, 377284111Sbapt getarg(args, 'r') != NULL, mode)); 378284111Sbapt else if (mode == M_PRINT) 379284126Sbapt return print_user(pwd); 38020253Sjoerg 38120253Sjoerg /* 38220253Sjoerg * The rest is edit code 38320253Sjoerg */ 384284129Sbapt if (conf.newname != NULL) { 38520253Sjoerg if (strcmp(pwd->pw_name, "root") == 0) 38630259Scharnier errx(EX_DATAERR, "can't rename `root' account"); 387284129Sbapt pwd->pw_name = pw_checkname(conf.newname, 0); 38852527Sdavidn edited = 1; 38920253Sjoerg } 39052527Sdavidn 391284133Sbapt if (id > 0 && isdigit((unsigned char)*arg->val)) { 392284133Sbapt pwd->pw_uid = (uid_t)id; 39352527Sdavidn edited = 1; 39420253Sjoerg if (pwd->pw_uid != 0 && strcmp(pwd->pw_name, "root") == 0) 39530259Scharnier errx(EX_DATAERR, "can't change uid of `root' account"); 39620253Sjoerg if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0) 39730259Scharnier warnx("WARNING: account `%s' will have a uid of 0 (superuser access!)", pwd->pw_name); 39820253Sjoerg } 39920253Sjoerg 40052527Sdavidn if ((arg = getarg(args, 'g')) != NULL && pwd->pw_uid != 0) { /* Already checked this */ 40152527Sdavidn gid_t newgid = (gid_t) GETGRNAM(cnf->default_group)->gr_gid; 40252527Sdavidn if (newgid != pwd->pw_gid) { 40352527Sdavidn edited = 1; 40461762Sdavidn pwd->pw_gid = newgid; 40552527Sdavidn } 40652527Sdavidn } 40752527Sdavidn 40820253Sjoerg if ((arg = getarg(args, 'p')) != NULL) { 40952527Sdavidn if (*arg->val == '\0' || strcmp(arg->val, "0") == 0) { 41052527Sdavidn if (pwd->pw_change != 0) { 41152527Sdavidn pwd->pw_change = 0; 41252527Sdavidn edited = 1; 41352527Sdavidn } 41452527Sdavidn } 41520253Sjoerg else { 41620253Sjoerg time_t now = time(NULL); 41720253Sjoerg time_t expire = parse_date(now, arg->val); 41820253Sjoerg 41952527Sdavidn if (pwd->pw_change != expire) { 42052527Sdavidn pwd->pw_change = expire; 42152527Sdavidn edited = 1; 42252527Sdavidn } 42320253Sjoerg } 42420253Sjoerg } 42552527Sdavidn 42620267Sjoerg if ((arg = getarg(args, 'e')) != NULL) { 42752527Sdavidn if (*arg->val == '\0' || strcmp(arg->val, "0") == 0) { 42852527Sdavidn if (pwd->pw_expire != 0) { 42952527Sdavidn pwd->pw_expire = 0; 43052527Sdavidn edited = 1; 43152527Sdavidn } 43252527Sdavidn } 43320253Sjoerg else { 43420253Sjoerg time_t now = time(NULL); 43520253Sjoerg time_t expire = parse_date(now, arg->val); 43620253Sjoerg 43752527Sdavidn if (pwd->pw_expire != expire) { 43852527Sdavidn pwd->pw_expire = expire; 43952527Sdavidn edited = 1; 44052527Sdavidn } 44120253Sjoerg } 44220253Sjoerg } 44320253Sjoerg 44452527Sdavidn if ((arg = getarg(args, 's')) != NULL) { 44552527Sdavidn char *shell = shell_path(cnf->shelldir, cnf->shells, arg->val); 44652527Sdavidn if (shell == NULL) 44752527Sdavidn shell = ""; 44852527Sdavidn if (strcmp(shell, pwd->pw_shell) != 0) { 44952527Sdavidn pwd->pw_shell = shell; 45052527Sdavidn edited = 1; 45152527Sdavidn } 45252527Sdavidn } 45320253Sjoerg 45452527Sdavidn if (getarg(args, 'L')) { 45552527Sdavidn if (cnf->default_class == NULL) 45652527Sdavidn cnf->default_class = ""; 45752527Sdavidn if (strcmp(pwd->pw_class, cnf->default_class) != 0) { 45852527Sdavidn pwd->pw_class = cnf->default_class; 45952527Sdavidn edited = 1; 46052527Sdavidn } 46152527Sdavidn } 46252527Sdavidn 46320747Sdavidn if ((arg = getarg(args, 'd')) != NULL) { 464130629Srobert if (strcmp(pwd->pw_dir, arg->val)) 465130629Srobert edited = 1; 46620747Sdavidn if (stat(pwd->pw_dir = arg->val, &st) == -1) { 46720747Sdavidn if (getarg(args, 'm') == NULL && strcmp(pwd->pw_dir, "/nonexistent") != 0) 46830259Scharnier warnx("WARNING: home `%s' does not exist", pwd->pw_dir); 46920747Sdavidn } else if (!S_ISDIR(st.st_mode)) 47030259Scharnier warnx("WARNING: home `%s' is not a directory", pwd->pw_dir); 47120747Sdavidn } 47220747Sdavidn 473124382Siedowse if ((arg = getarg(args, 'w')) != NULL && 474124382Siedowse getarg(args, 'h') == NULL && getarg(args, 'H') == NULL) { 47564918Sgreen login_cap_t *lc; 47664918Sgreen 47764918Sgreen lc = login_getpwclass(pwd); 47864918Sgreen if (lc == NULL || 479252688Sdes login_setcryptfmt(lc, "sha512", NULL) == NULL) 48064918Sgreen warn("setting crypt(3) format"); 48164918Sgreen login_close(lc); 48220267Sjoerg pwd->pw_passwd = pw_password(cnf, args, pwd->pw_name); 48352527Sdavidn edited = 1; 48452527Sdavidn } 48520267Sjoerg 48620253Sjoerg } else { 48764918Sgreen login_cap_t *lc; 48852527Sdavidn 48952527Sdavidn /* 49052527Sdavidn * Add code 49152527Sdavidn */ 49252527Sdavidn 493284128Sbapt if (name == NULL) /* Required */ 49430259Scharnier errx(EX_DATAERR, "login name required"); 495284128Sbapt else if ((pwd = GETPWNAM(name)) != NULL) /* Exists */ 496284128Sbapt errx(EX_DATAERR, "login name `%s' already exists", name); 49720253Sjoerg 49820253Sjoerg /* 49920253Sjoerg * Now, set up defaults for a new user 50020253Sjoerg */ 50120253Sjoerg pwd = &fakeuser; 502284128Sbapt pwd->pw_name = name; 50320253Sjoerg pwd->pw_class = cnf->default_class ? cnf->default_class : ""; 504284133Sbapt pwd->pw_uid = pw_uidpolicy(cnf, id); 505284118Sbapt pwd->pw_gid = pw_gidpolicy(args, pwd->pw_name, (gid_t) pwd->pw_uid); 50620253Sjoerg pwd->pw_change = pw_pwdpolicy(cnf, args); 50720253Sjoerg pwd->pw_expire = pw_exppolicy(cnf, args); 50820253Sjoerg pwd->pw_dir = pw_homepolicy(cnf, args, pwd->pw_name); 50920253Sjoerg pwd->pw_shell = pw_shellpolicy(cnf, args, NULL); 51064918Sgreen lc = login_getpwclass(pwd); 511272833Sdes if (lc == NULL || login_setcryptfmt(lc, "sha512", NULL) == NULL) 51264918Sgreen warn("setting crypt(3) format"); 51364918Sgreen login_close(lc); 51464918Sgreen pwd->pw_passwd = pw_password(cnf, args, pwd->pw_name); 51552527Sdavidn edited = 1; 51620253Sjoerg 51720253Sjoerg if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0) 51830259Scharnier warnx("WARNING: new account `%s' has a uid of 0 (superuser access!)", pwd->pw_name); 51920253Sjoerg } 52020253Sjoerg 52120253Sjoerg /* 52220253Sjoerg * Shared add/edit code 52320253Sjoerg */ 52452527Sdavidn if ((arg = getarg(args, 'c')) != NULL) { 525284110Sbapt char *gecos = pw_checkname(arg->val, 1); 52652527Sdavidn if (strcmp(pwd->pw_gecos, gecos) != 0) { 52752527Sdavidn pwd->pw_gecos = gecos; 52852527Sdavidn edited = 1; 52952527Sdavidn } 53052527Sdavidn } 53120253Sjoerg 532124382Siedowse if ((arg = getarg(args, 'h')) != NULL || 533124382Siedowse (arg = getarg(args, 'H')) != NULL) { 53463572Sdavidn if (strcmp(arg->val, "-") == 0) { 53563572Sdavidn if (!pwd->pw_passwd || *pwd->pw_passwd != '*') { 53663572Sdavidn pwd->pw_passwd = "*"; /* No access */ 53763572Sdavidn edited = 1; 53863572Sdavidn } 53963572Sdavidn } else { 54020253Sjoerg int fd = atoi(arg->val); 541124382Siedowse int precrypt = (arg->ch == 'H'); 54220253Sjoerg int b; 54320253Sjoerg int istty = isatty(fd); 54420253Sjoerg struct termios t; 54564918Sgreen login_cap_t *lc; 54620253Sjoerg 54720253Sjoerg if (istty) { 54820253Sjoerg if (tcgetattr(fd, &t) == -1) 54920253Sjoerg istty = 0; 55020253Sjoerg else { 55120253Sjoerg struct termios n = t; 55220253Sjoerg 55320253Sjoerg /* Disable echo */ 55420253Sjoerg n.c_lflag &= ~(ECHO); 55520253Sjoerg tcsetattr(fd, TCSANOW, &n); 556124382Siedowse printf("%s%spassword for user %s:", 557124382Siedowse (mode == M_UPDATE) ? "new " : "", 558124382Siedowse precrypt ? "encrypted " : "", 559124382Siedowse pwd->pw_name); 56020253Sjoerg fflush(stdout); 56120253Sjoerg } 56220253Sjoerg } 56320253Sjoerg b = read(fd, line, sizeof(line) - 1); 56420253Sjoerg if (istty) { /* Restore state */ 56520253Sjoerg tcsetattr(fd, TCSANOW, &t); 56620253Sjoerg fputc('\n', stdout); 56720253Sjoerg fflush(stdout); 56820253Sjoerg } 569283814Sbapt if (b < 0) 570283814Sbapt err(EX_IOERR, "-%c file descriptor", 571283814Sbapt precrypt ? 'H' : 'h'); 57220253Sjoerg line[b] = '\0'; 573168045Sle if ((p = strpbrk(line, "\r\n")) != NULL) 57420253Sjoerg *p = '\0'; 57520253Sjoerg if (!*line) 57630259Scharnier errx(EX_DATAERR, "empty password read on file descriptor %d", fd); 577124382Siedowse if (precrypt) { 578124382Siedowse if (strchr(line, ':') != NULL) 579124382Siedowse return EX_DATAERR; 580124382Siedowse pwd->pw_passwd = line; 581124382Siedowse } else { 582124382Siedowse lc = login_getpwclass(pwd); 583124382Siedowse if (lc == NULL || 584272833Sdes login_setcryptfmt(lc, "sha512", NULL) == NULL) 585124382Siedowse warn("setting crypt(3) format"); 586124382Siedowse login_close(lc); 587124382Siedowse pwd->pw_passwd = pw_pwcrypt(line); 588124382Siedowse } 58952527Sdavidn edited = 1; 59020253Sjoerg } 59120253Sjoerg } 59220267Sjoerg 59320267Sjoerg /* 59420267Sjoerg * Special case: -N only displays & exits 59520267Sjoerg */ 596284121Sbapt if (conf.dryrun) 597284126Sbapt return print_user(pwd); 59820267Sjoerg 59921330Sdavidn if (mode == M_ADD) { 60052527Sdavidn edited = 1; /* Always */ 60152502Sdavidn rc = addpwent(pwd); 602283814Sbapt if (rc == -1) 603283814Sbapt errx(EX_IOERR, "user '%s' already exists", 604283814Sbapt pwd->pw_name); 605283814Sbapt else if (rc != 0) 606283814Sbapt err(EX_IOERR, "passwd file update"); 60752502Sdavidn if (cnf->nispasswd && *cnf->nispasswd=='/') { 60852502Sdavidn rc = addnispwent(cnf->nispasswd, pwd); 60952502Sdavidn if (rc == -1) 61052502Sdavidn warnx("User '%s' already exists in NIS passwd", pwd->pw_name); 61152502Sdavidn else 61256000Sdavidn warn("NIS passwd update"); 61352502Sdavidn /* NOTE: we treat NIS-only update errors as non-fatal */ 61452502Sdavidn } 61552512Sdavidn } else if (mode == M_UPDATE || mode == M_LOCK || mode == M_UNLOCK) { 61652527Sdavidn if (edited) { /* Only updated this if required */ 617284128Sbapt rc = chgpwent(name, pwd); 618283814Sbapt if (rc == -1) 619283814Sbapt errx(EX_IOERR, "user '%s' does not exist (NIS?)", pwd->pw_name); 620283814Sbapt else if (rc != 0) 621283814Sbapt err(EX_IOERR, "passwd file update"); 62252527Sdavidn if ( cnf->nispasswd && *cnf->nispasswd=='/') { 623284128Sbapt rc = chgnispwent(cnf->nispasswd, name, pwd); 62452527Sdavidn if (rc == -1) 62552527Sdavidn warn("User '%s' not found in NIS passwd", pwd->pw_name); 62652527Sdavidn else 62756000Sdavidn warn("NIS passwd update"); 62852527Sdavidn /* NOTE: NIS-only update errors are not fatal */ 62952527Sdavidn } 63052502Sdavidn } 63121330Sdavidn } 63221330Sdavidn 63320253Sjoerg /* 63420253Sjoerg * Ok, user is created or changed - now edit group file 63520253Sjoerg */ 63620253Sjoerg 637242349Sbapt if (mode == M_ADD || getarg(args, 'G') != NULL) { 638273779Sbapt int i, j; 639273779Sbapt /* First remove the user from all group */ 640273779Sbapt SETGRENT(); 641273779Sbapt while ((grp = GETGRENT()) != NULL) { 642273779Sbapt char group[MAXLOGNAME]; 643273779Sbapt if (grp->gr_mem == NULL) 644273779Sbapt continue; 645273779Sbapt for (i = 0; grp->gr_mem[i] != NULL; i++) { 646273779Sbapt if (strcmp(grp->gr_mem[i] , pwd->pw_name) != 0) 647273779Sbapt continue; 648273779Sbapt for (j = i; grp->gr_mem[j] != NULL ; j++) 649273779Sbapt grp->gr_mem[j] = grp->gr_mem[j+1]; 650273779Sbapt strlcpy(group, grp->gr_name, MAXLOGNAME); 651273779Sbapt chggrent(group, grp); 652273779Sbapt } 653273779Sbapt } 654273779Sbapt ENDGRENT(); 655273779Sbapt 656273779Sbapt /* now add to group where needed */ 657242349Sbapt for (i = 0; cnf->groups[i] != NULL; i++) { 658242349Sbapt grp = GETGRNAM(cnf->groups[i]); 659244737Sbapt grp = gr_add(grp, pwd->pw_name); 660244737Sbapt /* 661244737Sbapt * grp can only be NULL in 2 cases: 662244737Sbapt * - the new member is already a member 663244737Sbapt * - a problem with memory occurs 664244737Sbapt * in both cases we want to skip now. 665244737Sbapt */ 666244737Sbapt if (grp == NULL) 667242349Sbapt continue; 668242349Sbapt chggrent(cnf->groups[i], grp); 669245114Smjg free(grp); 670242349Sbapt } 671242349Sbapt } 672242349Sbapt 673242349Sbapt 67461759Sdavidn /* go get a current version of pwd */ 675284128Sbapt pwd = GETPWNAM(name); 67661759Sdavidn if (pwd == NULL) { 67761759Sdavidn /* This will fail when we rename, so special case that */ 678284129Sbapt if (mode == M_UPDATE && conf.newname != NULL) { 679284129Sbapt name = conf.newname; /* update new name */ 680284128Sbapt pwd = GETPWNAM(name); /* refetch renamed rec */ 68161759Sdavidn } 68261759Sdavidn } 68361759Sdavidn if (pwd == NULL) /* can't go on without this */ 684284128Sbapt errx(EX_NOUSER, "user '%s' disappeared during update", name); 68520253Sjoerg 68644229Sdavidn grp = GETGRGID(pwd->pw_gid); 687283842Sbapt pw_log(cnf, mode, W_USER, "%s(%u):%s(%u):%s:%s:%s", 688283842Sbapt pwd->pw_name, pwd->pw_uid, 689283842Sbapt grp ? grp->gr_name : "unknown", (grp ? grp->gr_gid : (uid_t)-1), 69020253Sjoerg pwd->pw_gecos, pwd->pw_dir, pwd->pw_shell); 69120253Sjoerg 69220253Sjoerg /* 69320253Sjoerg * If adding, let's touch and chown the user's mail file. This is not 69420253Sjoerg * strictly necessary under BSD with a 0755 maildir but it also 69520253Sjoerg * doesn't hurt anything to create the empty mailfile 69620253Sjoerg */ 69720253Sjoerg if (mode == M_ADD) { 698283961Sbapt if (PWALTDIR() != PWF_ALT) { 699283961Sbapt arg = getarg(args, 'R'); 700283961Sbapt snprintf(path, sizeof(path), "%s%s/%s", 701283961Sbapt arg ? arg->val : "", _PATH_MAILDIR, pwd->pw_name); 702283961Sbapt close(open(path, O_RDWR | O_CREAT, 0600)); /* Preserve contents & 70344229Sdavidn * mtime */ 704283961Sbapt chown(path, pwd->pw_uid, pwd->pw_gid); 70520253Sjoerg } 70620253Sjoerg } 70752527Sdavidn 70820253Sjoerg /* 70982868Sdd * Let's create and populate the user's home directory. Note 71020253Sjoerg * that this also `works' for editing users if -m is used, but 71120253Sjoerg * existing files will *not* be overwritten. 71220253Sjoerg */ 713283961Sbapt if (PWALTDIR() != PWF_ALT && getarg(args, 'm') != NULL && pwd->pw_dir && 714283961Sbapt *pwd->pw_dir == '/' && pwd->pw_dir[1]) 715284118Sbapt create_and_populate_homedir(mode, pwd); 71652527Sdavidn 71782868Sdd /* 71882868Sdd * Finally, send mail to the new user as well, if we are asked to 71982868Sdd */ 72082868Sdd if (mode == M_ADD && !PWALTDIR() && cnf->newmail && *cnf->newmail && (fp = fopen(cnf->newmail, "r")) != NULL) { 72182868Sdd FILE *pfp = popen(_PATH_SENDMAIL " -t", "w"); 72282868Sdd 72382868Sdd if (pfp == NULL) 72482868Sdd warn("sendmail"); 72582868Sdd else { 72682868Sdd fprintf(pfp, "From: root\n" "To: %s\n" "Subject: Welcome!\n\n", pwd->pw_name); 72782868Sdd while (fgets(line, sizeof(line), fp) != NULL) { 72882868Sdd /* Do substitutions? */ 72982868Sdd fputs(line, pfp); 73082868Sdd } 73182868Sdd pclose(pfp); 732283842Sbapt pw_log(cnf, mode, W_USER, "%s(%u) new user mail sent", 733283842Sbapt pwd->pw_name, pwd->pw_uid); 73482868Sdd } 73582868Sdd fclose(fp); 73682868Sdd } 73782868Sdd 73820267Sjoerg return EXIT_SUCCESS; 73920253Sjoerg} 74020253Sjoerg 74120253Sjoerg 74220253Sjoergstatic uid_t 743284133Sbaptpw_uidpolicy(struct userconf * cnf, long id) 74420253Sjoerg{ 74520253Sjoerg struct passwd *pwd; 74620253Sjoerg uid_t uid = (uid_t) - 1; 74720253Sjoerg 74820253Sjoerg /* 74920253Sjoerg * Check the given uid, if any 75020253Sjoerg */ 751284133Sbapt if (id > 0) { 752284133Sbapt uid = (uid_t) id; 75320253Sjoerg 754284133Sbapt if ((pwd = GETPWUID(uid)) != NULL && conf.checkduplicate) 755283842Sbapt errx(EX_DATAERR, "uid `%u' has already been allocated", pwd->pw_uid); 75620253Sjoerg } else { 75720253Sjoerg struct bitmap bm; 75820253Sjoerg 75920253Sjoerg /* 76020253Sjoerg * We need to allocate the next available uid under one of 76120253Sjoerg * two policies a) Grab the first unused uid b) Grab the 76220253Sjoerg * highest possible unused uid 76320253Sjoerg */ 76420253Sjoerg if (cnf->min_uid >= cnf->max_uid) { /* Sanity 76520253Sjoerg * claus^H^H^H^Hheck */ 76620253Sjoerg cnf->min_uid = 1000; 76720253Sjoerg cnf->max_uid = 32000; 76820253Sjoerg } 76920253Sjoerg bm = bm_alloc(cnf->max_uid - cnf->min_uid + 1); 77020253Sjoerg 77120253Sjoerg /* 77220253Sjoerg * Now, let's fill the bitmap from the password file 77320253Sjoerg */ 77444229Sdavidn SETPWENT(); 77544229Sdavidn while ((pwd = GETPWENT()) != NULL) 77644229Sdavidn if (pwd->pw_uid >= (uid_t) cnf->min_uid && pwd->pw_uid <= (uid_t) cnf->max_uid) 77720253Sjoerg bm_setbit(&bm, pwd->pw_uid - cnf->min_uid); 77844229Sdavidn ENDPWENT(); 77920253Sjoerg 78020253Sjoerg /* 78120253Sjoerg * Then apply the policy, with fallback to reuse if necessary 78220253Sjoerg */ 78320253Sjoerg if (cnf->reuse_uids || (uid = (uid_t) (bm_lastset(&bm) + cnf->min_uid + 1)) > cnf->max_uid) 78420253Sjoerg uid = (uid_t) (bm_firstunset(&bm) + cnf->min_uid); 78520253Sjoerg 78620253Sjoerg /* 78720253Sjoerg * Another sanity check 78820253Sjoerg */ 78920253Sjoerg if (uid < cnf->min_uid || uid > cnf->max_uid) 79030259Scharnier errx(EX_SOFTWARE, "unable to allocate a new uid - range fully used"); 79120253Sjoerg bm_dealloc(&bm); 79220253Sjoerg } 79320253Sjoerg return uid; 79420253Sjoerg} 79520253Sjoerg 79620253Sjoerg 79720253Sjoergstatic uid_t 798284118Sbaptpw_gidpolicy(struct cargs * args, char *nam, gid_t prefer) 79920253Sjoerg{ 80020253Sjoerg struct group *grp; 80120253Sjoerg gid_t gid = (uid_t) - 1; 80220253Sjoerg struct carg *a_gid = getarg(args, 'g'); 803284118Sbapt struct userconf *cnf = conf.userconf; 80420253Sjoerg 80520253Sjoerg /* 80620253Sjoerg * If no arg given, see if default can help out 80720253Sjoerg */ 80820253Sjoerg if (a_gid == NULL && cnf->default_group && *cnf->default_group) 80920253Sjoerg a_gid = addarg(args, 'g', cnf->default_group); 81020253Sjoerg 81120253Sjoerg /* 81220253Sjoerg * Check the given gid, if any 81320253Sjoerg */ 81444229Sdavidn SETGRENT(); 81520253Sjoerg if (a_gid != NULL) { 81644229Sdavidn if ((grp = GETGRNAM(a_gid->val)) == NULL) { 81720253Sjoerg gid = (gid_t) atol(a_gid->val); 81861957Sache if ((gid == 0 && !isdigit((unsigned char)*a_gid->val)) || (grp = GETGRGID(gid)) == NULL) 81930259Scharnier errx(EX_NOUSER, "group `%s' is not defined", a_gid->val); 82020253Sjoerg } 82120253Sjoerg gid = grp->gr_gid; 822262865Sjulian } else if ((grp = GETGRNAM(nam)) != NULL && 823262865Sjulian (grp->gr_mem == NULL || grp->gr_mem[0] == NULL)) { 82420267Sjoerg gid = grp->gr_gid; /* Already created? Use it anyway... */ 82520253Sjoerg } else { 82620253Sjoerg struct cargs grpargs; 82720253Sjoerg char tmp[32]; 82820253Sjoerg 82920253Sjoerg LIST_INIT(&grpargs); 83020253Sjoerg 83120253Sjoerg /* 83220253Sjoerg * We need to auto-create a group with the user's name. We 83320253Sjoerg * can send all the appropriate output to our sister routine 83420253Sjoerg * bit first see if we can create a group with gid==uid so we 83520253Sjoerg * can keep the user and group ids in sync. We purposely do 83620253Sjoerg * NOT check the gid range if we can force the sync. If the 83720253Sjoerg * user's name dups an existing group, then the group add 83820253Sjoerg * function will happily handle that case for us and exit. 83920253Sjoerg */ 84044229Sdavidn if (GETGRGID(prefer) == NULL) { 841282700Sbapt snprintf(tmp, sizeof(tmp), "%u", prefer); 84220253Sjoerg addarg(&grpargs, 'g', tmp); 84320253Sjoerg } 844284121Sbapt if (conf.dryrun) { 84520267Sjoerg addarg(&grpargs, 'q', NULL); 846284128Sbapt gid = pw_group(M_NEXT, nam, -1, &grpargs); 84720267Sjoerg } 84820267Sjoerg else 84920267Sjoerg { 850284128Sbapt pw_group(M_ADD, nam, -1, &grpargs); 85144229Sdavidn if ((grp = GETGRNAM(nam)) != NULL) 85220267Sjoerg gid = grp->gr_gid; 85320267Sjoerg } 85470486Sben a_gid = LIST_FIRST(&grpargs); 85520253Sjoerg while (a_gid != NULL) { 85670486Sben struct carg *t = LIST_NEXT(a_gid, list); 85720253Sjoerg LIST_REMOVE(a_gid, list); 85820253Sjoerg a_gid = t; 85920253Sjoerg } 86020253Sjoerg } 86144229Sdavidn ENDGRENT(); 86220253Sjoerg return gid; 86320253Sjoerg} 86420253Sjoerg 86520253Sjoerg 86620253Sjoergstatic time_t 86720253Sjoergpw_pwdpolicy(struct userconf * cnf, struct cargs * args) 86820253Sjoerg{ 86920253Sjoerg time_t result = 0; 87020253Sjoerg time_t now = time(NULL); 87127831Sdavidn struct carg *arg = getarg(args, 'p'); 87220253Sjoerg 87320253Sjoerg if (arg != NULL) { 87420253Sjoerg if ((result = parse_date(now, arg->val)) == now) 87530259Scharnier errx(EX_DATAERR, "invalid date/time `%s'", arg->val); 87620253Sjoerg } else if (cnf->password_days > 0) 87720253Sjoerg result = now + ((long) cnf->password_days * 86400L); 87820253Sjoerg return result; 87920253Sjoerg} 88020253Sjoerg 88120253Sjoerg 88220253Sjoergstatic time_t 88320253Sjoergpw_exppolicy(struct userconf * cnf, struct cargs * args) 88420253Sjoerg{ 88520253Sjoerg time_t result = 0; 88620253Sjoerg time_t now = time(NULL); 88720253Sjoerg struct carg *arg = getarg(args, 'e'); 88820253Sjoerg 88920253Sjoerg if (arg != NULL) { 89020253Sjoerg if ((result = parse_date(now, arg->val)) == now) 89130259Scharnier errx(EX_DATAERR, "invalid date/time `%s'", arg->val); 89220253Sjoerg } else if (cnf->expire_days > 0) 89320253Sjoerg result = now + ((long) cnf->expire_days * 86400L); 89420253Sjoerg return result; 89520253Sjoerg} 89620253Sjoerg 89720253Sjoerg 89820253Sjoergstatic char * 89920253Sjoergpw_homepolicy(struct userconf * cnf, struct cargs * args, char const * user) 90020253Sjoerg{ 90120253Sjoerg struct carg *arg = getarg(args, 'd'); 902282699Sbapt static char home[128]; 90320253Sjoerg 90420253Sjoerg if (arg) 905282699Sbapt return (arg->val); 90620253Sjoerg 907282699Sbapt if (cnf->home == NULL || *cnf->home == '\0') 908282699Sbapt errx(EX_CONFIG, "no base home directory set"); 909282699Sbapt snprintf(home, sizeof(home), "%s/%s", cnf->home, user); 910282699Sbapt 911282699Sbapt return (home); 91220253Sjoerg} 91320253Sjoerg 91420253Sjoergstatic char * 91520253Sjoergshell_path(char const * path, char *shells[], char *sh) 91620253Sjoerg{ 91720253Sjoerg if (sh != NULL && (*sh == '/' || *sh == '\0')) 91820253Sjoerg return sh; /* specified full path or forced none */ 91920253Sjoerg else { 92020253Sjoerg char *p; 92120253Sjoerg char paths[_UC_MAXLINE]; 92220253Sjoerg 92320253Sjoerg /* 92420253Sjoerg * We need to search paths 92520253Sjoerg */ 926130633Srobert strlcpy(paths, path, sizeof(paths)); 92720253Sjoerg for (p = strtok(paths, ": \t\r\n"); p != NULL; p = strtok(NULL, ": \t\r\n")) { 92820253Sjoerg int i; 92920253Sjoerg static char shellpath[256]; 93020253Sjoerg 93120253Sjoerg if (sh != NULL) { 932282700Sbapt snprintf(shellpath, sizeof(shellpath), "%s/%s", p, sh); 93320253Sjoerg if (access(shellpath, X_OK) == 0) 93420253Sjoerg return shellpath; 93520253Sjoerg } else 93620253Sjoerg for (i = 0; i < _UC_MAXSHELLS && shells[i] != NULL; i++) { 937282700Sbapt snprintf(shellpath, sizeof(shellpath), "%s/%s", p, shells[i]); 93820253Sjoerg if (access(shellpath, X_OK) == 0) 93920253Sjoerg return shellpath; 94020253Sjoerg } 94120253Sjoerg } 94220253Sjoerg if (sh == NULL) 94330259Scharnier errx(EX_OSFILE, "can't find shell `%s' in shell paths", sh); 94430259Scharnier errx(EX_CONFIG, "no default shell available or defined"); 94520253Sjoerg return NULL; 94620253Sjoerg } 94720253Sjoerg} 94820253Sjoerg 94920253Sjoerg 95020253Sjoergstatic char * 95120253Sjoergpw_shellpolicy(struct userconf * cnf, struct cargs * args, char *newshell) 95220253Sjoerg{ 95320253Sjoerg char *sh = newshell; 95420253Sjoerg struct carg *arg = getarg(args, 's'); 95520253Sjoerg 95620253Sjoerg if (newshell == NULL && arg != NULL) 95720253Sjoerg sh = arg->val; 95820253Sjoerg return shell_path(cnf->shelldir, cnf->shells, sh ? sh : cnf->shell_default); 95920253Sjoerg} 96020253Sjoerg 961179365Santoine#define SALTSIZE 32 96220253Sjoerg 963179365Santoinestatic char const chars[] = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ./"; 964179365Santoine 96520253Sjoergchar * 96620253Sjoergpw_pwcrypt(char *password) 96720253Sjoerg{ 96820253Sjoerg int i; 969179365Santoine char salt[SALTSIZE + 1]; 970231994Skevlo char *cryptpw; 97120253Sjoerg 97220253Sjoerg static char buf[256]; 97320253Sjoerg 97420253Sjoerg /* 97520253Sjoerg * Calculate a salt value 97620253Sjoerg */ 977179365Santoine for (i = 0; i < SALTSIZE; i++) 978181785Sache salt[i] = chars[arc4random_uniform(sizeof(chars) - 1)]; 979179365Santoine salt[SALTSIZE] = '\0'; 98020253Sjoerg 981231994Skevlo cryptpw = crypt(password, salt); 982231994Skevlo if (cryptpw == NULL) 983231994Skevlo errx(EX_CONFIG, "crypt(3) failure"); 984231994Skevlo return strcpy(buf, cryptpw); 98520253Sjoerg} 98620253Sjoerg 98720590Sdavidn 98820253Sjoergstatic char * 98920253Sjoergpw_password(struct userconf * cnf, struct cargs * args, char const * user) 99020253Sjoerg{ 99120253Sjoerg int i, l; 99220253Sjoerg char pwbuf[32]; 99320253Sjoerg 99420253Sjoerg switch (cnf->default_password) { 99520253Sjoerg case -1: /* Random password */ 99673563Skris l = (arc4random() % 8 + 8); /* 8 - 16 chars */ 99720253Sjoerg for (i = 0; i < l; i++) 998181785Sache pwbuf[i] = chars[arc4random_uniform(sizeof(chars)-1)]; 99920253Sjoerg pwbuf[i] = '\0'; 100020253Sjoerg 100120253Sjoerg /* 100220253Sjoerg * We give this information back to the user 100320253Sjoerg */ 1004124382Siedowse if (getarg(args, 'h') == NULL && getarg(args, 'H') == NULL && 1005284121Sbapt !conf.dryrun) { 100661957Sache if (isatty(STDOUT_FILENO)) 100720712Sdavidn printf("Password for '%s' is: ", user); 100820253Sjoerg printf("%s\n", pwbuf); 100920253Sjoerg fflush(stdout); 101020253Sjoerg } 101120253Sjoerg break; 101220253Sjoerg 101320253Sjoerg case -2: /* No password at all! */ 101420253Sjoerg return ""; 101520253Sjoerg 101620253Sjoerg case 0: /* No login - default */ 101720253Sjoerg default: 101820253Sjoerg return "*"; 101920253Sjoerg 102020253Sjoerg case 1: /* user's name */ 1021130633Srobert strlcpy(pwbuf, user, sizeof(pwbuf)); 102220253Sjoerg break; 102320253Sjoerg } 102420253Sjoerg return pw_pwcrypt(pwbuf); 102520253Sjoerg} 102620253Sjoerg 1027284111Sbaptstatic int 1028284128Sbaptdelete_user(struct userconf *cnf, struct passwd *pwd, char *name, 1029284111Sbapt int delete, int mode) 1030284111Sbapt{ 1031284111Sbapt char file[MAXPATHLEN]; 1032284111Sbapt char home[MAXPATHLEN]; 1033284111Sbapt uid_t uid = pwd->pw_uid; 1034284111Sbapt struct group *gr, *grp; 1035284111Sbapt char grname[LOGNAMESIZE]; 1036284111Sbapt int rc; 1037284111Sbapt struct stat st; 103820253Sjoerg 1039284111Sbapt if (strcmp(pwd->pw_name, "root") == 0) 1040284111Sbapt errx(EX_DATAERR, "cannot remove user 'root'"); 1041284111Sbapt 1042284111Sbapt if (!PWALTDIR()) { 1043284111Sbapt /* 1044284111Sbapt * Remove opie record from /etc/opiekeys 1045284111Sbapt */ 1046284111Sbapt 1047284111Sbapt rmopie(pwd->pw_name); 1048284111Sbapt 1049284111Sbapt /* 1050284111Sbapt * Remove crontabs 1051284111Sbapt */ 1052284111Sbapt snprintf(file, sizeof(file), "/var/cron/tabs/%s", pwd->pw_name); 1053284111Sbapt if (access(file, F_OK) == 0) { 1054284111Sbapt snprintf(file, sizeof(file), "crontab -u %s -r", pwd->pw_name); 1055284111Sbapt system(file); 1056284111Sbapt } 1057284111Sbapt } 1058284111Sbapt /* 1059284111Sbapt * Save these for later, since contents of pwd may be 1060284111Sbapt * invalidated by deletion 1061284111Sbapt */ 1062284111Sbapt snprintf(file, sizeof(file), "%s/%s", _PATH_MAILDIR, pwd->pw_name); 1063284111Sbapt strlcpy(home, pwd->pw_dir, sizeof(home)); 1064284111Sbapt gr = GETGRGID(pwd->pw_gid); 1065284111Sbapt if (gr != NULL) 1066284111Sbapt strlcpy(grname, gr->gr_name, LOGNAMESIZE); 1067284111Sbapt else 1068284111Sbapt grname[0] = '\0'; 1069284111Sbapt 1070284111Sbapt rc = delpwent(pwd); 1071284111Sbapt if (rc == -1) 1072284111Sbapt err(EX_IOERR, "user '%s' does not exist", pwd->pw_name); 1073284111Sbapt else if (rc != 0) 1074284111Sbapt err(EX_IOERR, "passwd update"); 1075284111Sbapt 1076284111Sbapt if (cnf->nispasswd && *cnf->nispasswd=='/') { 1077284128Sbapt rc = delnispwent(cnf->nispasswd, name); 1078284111Sbapt if (rc == -1) 1079284111Sbapt warnx("WARNING: user '%s' does not exist in NIS passwd", pwd->pw_name); 1080284111Sbapt else if (rc != 0) 1081284111Sbapt warn("WARNING: NIS passwd update"); 1082284111Sbapt /* non-fatal */ 1083284111Sbapt } 1084284111Sbapt 1085284128Sbapt grp = GETGRNAM(name); 1086284111Sbapt if (grp != NULL && 1087284111Sbapt (grp->gr_mem == NULL || *grp->gr_mem == NULL) && 1088284128Sbapt strcmp(name, grname) == 0) 1089284128Sbapt delgrent(GETGRNAM(name)); 1090284111Sbapt SETGRENT(); 1091284111Sbapt while ((grp = GETGRENT()) != NULL) { 1092284111Sbapt int i, j; 1093284111Sbapt char group[MAXLOGNAME]; 1094284113Sbapt if (grp->gr_mem == NULL) 1095284113Sbapt continue; 1096284113Sbapt 1097284113Sbapt for (i = 0; grp->gr_mem[i] != NULL; i++) { 1098284128Sbapt if (strcmp(grp->gr_mem[i], name) != 0) 1099284113Sbapt continue; 1100284113Sbapt 1101284113Sbapt for (j = i; grp->gr_mem[j] != NULL; j++) 1102284113Sbapt grp->gr_mem[j] = grp->gr_mem[j+1]; 1103284113Sbapt strlcpy(group, grp->gr_name, MAXLOGNAME); 1104284113Sbapt chggrent(group, grp); 1105284111Sbapt } 1106284111Sbapt } 1107284111Sbapt ENDGRENT(); 1108284111Sbapt 1109284128Sbapt pw_log(cnf, mode, W_USER, "%s(%u) account removed", name, uid); 1110284111Sbapt 1111284117Sbapt if (!PWALTDIR()) { 1112284111Sbapt /* 1113284111Sbapt * Remove mail file 1114284111Sbapt */ 1115284111Sbapt remove(file); 1116284111Sbapt 1117284111Sbapt /* 1118284111Sbapt * Remove at jobs 1119284111Sbapt */ 1120284111Sbapt if (getpwuid(uid) == NULL) 1121284111Sbapt rmat(uid); 1122284111Sbapt 1123284111Sbapt /* 1124284111Sbapt * Remove home directory and contents 1125284111Sbapt */ 1126284112Sbapt if (delete && *home == '/' && getpwuid(uid) == NULL && 1127284112Sbapt stat(home, &st) != -1) { 1128284112Sbapt rm_r(home, uid); 1129284112Sbapt pw_log(cnf, mode, W_USER, "%s(%u) home '%s' %sremoved", 1130284128Sbapt name, uid, home, 1131284112Sbapt stat(home, &st) == -1 ? "" : "not completely "); 1132284111Sbapt } 1133284111Sbapt } 1134284111Sbapt 1135284111Sbapt return (EXIT_SUCCESS); 1136284111Sbapt} 1137284111Sbapt 113820253Sjoergstatic int 1139284124Sbaptprint_user(struct passwd * pwd) 114020253Sjoerg{ 1141284122Sbapt if (!conf.pretty) { 1142242349Sbapt char *buf; 114320253Sjoerg 1144284124Sbapt buf = conf.v7 ? pw_make_v7(pwd) : pw_make(pwd); 1145242349Sbapt printf("%s\n", buf); 1146242349Sbapt free(buf); 114720253Sjoerg } else { 114820267Sjoerg int j; 114920253Sjoerg char *p; 115044229Sdavidn struct group *grp = GETGRGID(pwd->pw_gid); 115120253Sjoerg char uname[60] = "User &", office[60] = "[None]", 115220253Sjoerg wphone[60] = "[None]", hphone[60] = "[None]"; 115320590Sdavidn char acexpire[32] = "[None]", pwexpire[32] = "[None]"; 115420590Sdavidn struct tm * tptr; 115520253Sjoerg 115620253Sjoerg if ((p = strtok(pwd->pw_gecos, ",")) != NULL) { 1157130633Srobert strlcpy(uname, p, sizeof(uname)); 115820253Sjoerg if ((p = strtok(NULL, ",")) != NULL) { 1159130633Srobert strlcpy(office, p, sizeof(office)); 116020253Sjoerg if ((p = strtok(NULL, ",")) != NULL) { 1161130633Srobert strlcpy(wphone, p, sizeof(wphone)); 116220253Sjoerg if ((p = strtok(NULL, "")) != NULL) { 1163130633Srobert strlcpy(hphone, p, 1164130633Srobert sizeof(hphone)); 116520253Sjoerg } 116620253Sjoerg } 116720253Sjoerg } 116820253Sjoerg } 116920253Sjoerg /* 117020253Sjoerg * Handle '&' in gecos field 117120253Sjoerg */ 117220253Sjoerg if ((p = strchr(uname, '&')) != NULL) { 117320253Sjoerg int l = strlen(pwd->pw_name); 117420253Sjoerg int m = strlen(p); 117520253Sjoerg 117620253Sjoerg memmove(p + l, p + 1, m); 117720253Sjoerg memmove(p, pwd->pw_name, l); 117861957Sache *p = (char) toupper((unsigned char)*p); 117920253Sjoerg } 118020590Sdavidn if (pwd->pw_expire > (time_t)0 && (tptr = localtime(&pwd->pw_expire)) != NULL) 118174569Sache strftime(acexpire, sizeof acexpire, "%c", tptr); 118261957Sache if (pwd->pw_change > (time_t)0 && (tptr = localtime(&pwd->pw_change)) != NULL) 118374569Sache strftime(pwexpire, sizeof pwexpire, "%c", tptr); 1184283842Sbapt printf("Login Name: %-15s #%-12u Group: %-15s #%u\n" 118520747Sdavidn " Full Name: %s\n" 118620747Sdavidn " Home: %-26.26s Class: %s\n" 118720747Sdavidn " Shell: %-26.26s Office: %s\n" 118820747Sdavidn "Work Phone: %-26.26s Home Phone: %s\n" 118920747Sdavidn "Acc Expire: %-26.26s Pwd Expire: %s\n", 1190283842Sbapt pwd->pw_name, pwd->pw_uid, 1191283842Sbapt grp ? grp->gr_name : "(invalid)", pwd->pw_gid, 119220253Sjoerg uname, pwd->pw_dir, pwd->pw_class, 119320590Sdavidn pwd->pw_shell, office, wphone, hphone, 119420590Sdavidn acexpire, pwexpire); 119544229Sdavidn SETGRENT(); 119620267Sjoerg j = 0; 119744229Sdavidn while ((grp=GETGRENT()) != NULL) 119820267Sjoerg { 119920267Sjoerg int i = 0; 1200262865Sjulian if (grp->gr_mem != NULL) { 1201262865Sjulian while (grp->gr_mem[i] != NULL) 120220267Sjoerg { 1203262865Sjulian if (strcmp(grp->gr_mem[i], pwd->pw_name)==0) 1204262865Sjulian { 1205262865Sjulian printf(j++ == 0 ? " Groups: %s" : ",%s", grp->gr_name); 1206262865Sjulian break; 1207262865Sjulian } 1208262865Sjulian ++i; 120920267Sjoerg } 121020267Sjoerg } 121120267Sjoerg } 121244229Sdavidn ENDGRENT(); 121361957Sache printf("%s", j ? "\n" : ""); 121420253Sjoerg } 121520267Sjoerg return EXIT_SUCCESS; 121620253Sjoerg} 121720253Sjoerg 1218284110Sbaptchar * 1219284110Sbaptpw_checkname(char *name, int gecos) 122020253Sjoerg{ 1221109961Sgad char showch[8]; 1222284110Sbapt const char *badchars, *ch, *showtype; 1223109961Sgad int reject; 122420253Sjoerg 1225109961Sgad ch = name; 1226109961Sgad reject = 0; 1227109961Sgad if (gecos) { 1228109961Sgad /* See if the name is valid as a gecos (comment) field. */ 1229109961Sgad badchars = ":!@"; 1230109961Sgad showtype = "gecos field"; 1231109961Sgad } else { 1232109961Sgad /* See if the name is valid as a userid or group. */ 1233109961Sgad badchars = " ,\t:+&#%$^()!@~*?<>=|\\/\""; 1234109961Sgad showtype = "userid/group name"; 1235109961Sgad /* Userids and groups can not have a leading '-'. */ 1236109961Sgad if (*ch == '-') 1237109961Sgad reject = 1; 123820253Sjoerg } 1239109961Sgad if (!reject) { 1240109961Sgad while (*ch) { 1241109961Sgad if (strchr(badchars, *ch) != NULL || *ch < ' ' || 1242109961Sgad *ch == 127) { 1243109961Sgad reject = 1; 1244109961Sgad break; 1245109961Sgad } 1246109961Sgad /* 8-bit characters are only allowed in GECOS fields */ 1247109961Sgad if (!gecos && (*ch & 0x80)) { 1248109961Sgad reject = 1; 1249109961Sgad break; 1250109961Sgad } 1251109961Sgad ch++; 1252109961Sgad } 1253109961Sgad } 1254109961Sgad /* 1255109961Sgad * A `$' is allowed as the final character for userids and groups, 1256109961Sgad * mainly for the benefit of samba. 1257109961Sgad */ 1258109961Sgad if (reject && !gecos) { 1259109961Sgad if (*ch == '$' && *(ch + 1) == '\0') { 1260109961Sgad reject = 0; 1261109961Sgad ch++; 1262109961Sgad } 1263109961Sgad } 1264109961Sgad if (reject) { 1265109961Sgad snprintf(showch, sizeof(showch), (*ch >= ' ' && *ch < 127) 1266109961Sgad ? "`%c'" : "0x%02x", *ch); 1267228673Sdim errx(EX_DATAERR, "invalid character %s at position %td in %s", 1268109961Sgad showch, (ch - name), showtype); 1269109961Sgad } 1270109961Sgad if (!gecos && (ch - name) > LOGNAMESIZE) 1271109961Sgad errx(EX_DATAERR, "name too long `%s' (max is %d)", name, 1272109961Sgad LOGNAMESIZE); 1273284110Sbapt 1274284110Sbapt return (name); 127520253Sjoerg} 127620253Sjoerg 127720253Sjoerg 127820253Sjoergstatic void 127920253Sjoergrmat(uid_t uid) 128020253Sjoerg{ 128120253Sjoerg DIR *d = opendir("/var/at/jobs"); 128220253Sjoerg 128320253Sjoerg if (d != NULL) { 128420253Sjoerg struct dirent *e; 128520253Sjoerg 128620253Sjoerg while ((e = readdir(d)) != NULL) { 128720253Sjoerg struct stat st; 128820253Sjoerg 128920253Sjoerg if (strncmp(e->d_name, ".lock", 5) != 0 && 129020253Sjoerg stat(e->d_name, &st) == 0 && 129120253Sjoerg !S_ISDIR(st.st_mode) && 129220253Sjoerg st.st_uid == uid) { 129320253Sjoerg char tmp[MAXPATHLEN]; 129420253Sjoerg 1295282700Sbapt snprintf(tmp, sizeof(tmp), "/usr/bin/atrm %s", e->d_name); 129620253Sjoerg system(tmp); 129720253Sjoerg } 129820253Sjoerg } 129920253Sjoerg closedir(d); 130020253Sjoerg } 130120253Sjoerg} 130220747Sdavidn 130320747Sdavidnstatic void 130485145Sachermopie(char const * name) 130520747Sdavidn{ 130685145Sache static const char etcopie[] = "/etc/opiekeys"; 130785145Sache FILE *fp = fopen(etcopie, "r+"); 130820747Sdavidn 130921052Sdavidn if (fp != NULL) { 131021052Sdavidn char tmp[1024]; 131121052Sdavidn off_t atofs = 0; 131221052Sdavidn int length = strlen(name); 131320747Sdavidn 131421052Sdavidn while (fgets(tmp, sizeof tmp, fp) != NULL) { 131521052Sdavidn if (strncmp(name, tmp, length) == 0 && tmp[length]==' ') { 131621052Sdavidn if (fseek(fp, atofs, SEEK_SET) == 0) { 131721052Sdavidn fwrite("#", 1, 1, fp); /* Comment username out */ 131821052Sdavidn } 131921052Sdavidn break; 132020747Sdavidn } 132121052Sdavidn atofs = ftell(fp); 132220747Sdavidn } 132321052Sdavidn /* 132421052Sdavidn * If we got an error of any sort, don't update! 132521052Sdavidn */ 132621052Sdavidn fclose(fp); 132720747Sdavidn } 132820747Sdavidn} 132920747Sdavidn 1330