pw_user.c revision 284128
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 284128 2015-06-07 19:03:41Z 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); 5720253Sjoergstatic uid_t pw_uidpolicy(struct userconf * cnf, struct cargs * args); 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 */ 16120267Sjoerg if (mode == M_NEXT) 16220267Sjoerg { 16320267Sjoerg uid_t next = pw_uidpolicy(cnf, args); 16420267Sjoerg if (getarg(args, 'q')) 16520267Sjoerg return next; 166283842Sbapt printf("%u:", next); 167284128Sbapt pw_group(mode, name, -1, args); 16820267Sjoerg 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')) { 29520253Sjoerg if (getarg(args, 'n') != 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 31020253Sjoerg arg = getarg(args, 'C'); 31120253Sjoerg if (write_userconfig(arg ? arg->val : NULL)) 31220267Sjoerg return EXIT_SUCCESS; 313283814Sbapt err(EX_IOERR, "config udpate"); 31420253Sjoerg } 31552527Sdavidn 31620253Sjoerg if (mode == M_PRINT && getarg(args, 'a')) { 31744229Sdavidn SETPWENT(); 31844229Sdavidn while ((pwd = GETPWENT()) != NULL) 319284124Sbapt print_user(pwd); 32044229Sdavidn ENDPWENT(); 32120267Sjoerg return EXIT_SUCCESS; 32220253Sjoerg } 32352527Sdavidn 324284128Sbapt if (name != NULL) 325284128Sbapt pwd = GETPWNAM(pw_checkname(name, 0)); 32620253Sjoerg 327284128Sbapt if (id < 0 && name == NULL) 328284128Sbapt errx(EX_DATAERR, "user name or id required"); 32920253Sjoerg 33020253Sjoerg /* 33120253Sjoerg * Update, delete & print require that the user exists 33220253Sjoerg */ 33352512Sdavidn if (mode == M_UPDATE || mode == M_DELETE || 33452512Sdavidn mode == M_PRINT || mode == M_LOCK || mode == M_UNLOCK) { 33552527Sdavidn 336284128Sbapt if (name == NULL && pwd == NULL) /* Try harder */ 337284128Sbapt pwd = GETPWUID(id); 33820253Sjoerg 33920253Sjoerg if (pwd == NULL) { 34020253Sjoerg if (mode == M_PRINT && getarg(args, 'F')) { 341284128Sbapt fakeuser.pw_name = name ? name : "nouser"; 342284128Sbapt fakeuser.pw_uid = (uid_t) id; 343284126Sbapt return print_user(&fakeuser); 34420253Sjoerg } 345284128Sbapt if (name == NULL) 346284128Sbapt errx(EX_NOUSER, "no such uid `%ld'", id); 347284128Sbapt errx(EX_NOUSER, "no such user `%s'", name); 34820253Sjoerg } 34952527Sdavidn 350284128Sbapt if (name == NULL) 351284128Sbapt name = pwd->pw_name; 35220253Sjoerg 35320253Sjoerg /* 35452512Sdavidn * The M_LOCK and M_UNLOCK functions simply add or remove 35552512Sdavidn * a "*LOCKED*" prefix from in front of the password to 35652512Sdavidn * prevent it decoding correctly, and therefore prevents 35752512Sdavidn * access. Of course, this only prevents access via 35852512Sdavidn * password authentication (not ssh, kerberos or any 35952512Sdavidn * other method that does not use the UNIX password) but 36052512Sdavidn * that is a known limitation. 36152512Sdavidn */ 36252512Sdavidn 36352512Sdavidn if (mode == M_LOCK) { 36452512Sdavidn if (strncmp(pwd->pw_passwd, locked_str, sizeof(locked_str)-1) == 0) 36552512Sdavidn errx(EX_DATAERR, "user '%s' is already locked", pwd->pw_name); 366282685Sbapt asprintf(&passtmp, "%s%s", locked_str, pwd->pw_passwd); 36752512Sdavidn if (passtmp == NULL) /* disaster */ 36852512Sdavidn errx(EX_UNAVAILABLE, "out of memory"); 36952512Sdavidn pwd->pw_passwd = passtmp; 37052527Sdavidn edited = 1; 37152512Sdavidn } else if (mode == M_UNLOCK) { 37252512Sdavidn if (strncmp(pwd->pw_passwd, locked_str, sizeof(locked_str)-1) != 0) 37352512Sdavidn errx(EX_DATAERR, "user '%s' is not locked", pwd->pw_name); 37452512Sdavidn pwd->pw_passwd += sizeof(locked_str)-1; 37552527Sdavidn edited = 1; 376284111Sbapt } else if (mode == M_DELETE) 377284128Sbapt return (delete_user(cnf, pwd, name, 378284111Sbapt getarg(args, 'r') != NULL, mode)); 379284111Sbapt else if (mode == M_PRINT) 380284126Sbapt return print_user(pwd); 38120253Sjoerg 38220253Sjoerg /* 38320253Sjoerg * The rest is edit code 38420253Sjoerg */ 38520253Sjoerg if ((arg = getarg(args, 'l')) != NULL) { 38620253Sjoerg if (strcmp(pwd->pw_name, "root") == 0) 38730259Scharnier errx(EX_DATAERR, "can't rename `root' account"); 388284110Sbapt pwd->pw_name = pw_checkname(arg->val, 0); 38952527Sdavidn edited = 1; 39020253Sjoerg } 39152527Sdavidn 39261957Sache if ((arg = getarg(args, 'u')) != NULL && isdigit((unsigned char)*arg->val)) { 39320253Sjoerg pwd->pw_uid = (uid_t) atol(arg->val); 39452527Sdavidn edited = 1; 39520253Sjoerg if (pwd->pw_uid != 0 && strcmp(pwd->pw_name, "root") == 0) 39630259Scharnier errx(EX_DATAERR, "can't change uid of `root' account"); 39720253Sjoerg if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0) 39830259Scharnier warnx("WARNING: account `%s' will have a uid of 0 (superuser access!)", pwd->pw_name); 39920253Sjoerg } 40020253Sjoerg 40152527Sdavidn if ((arg = getarg(args, 'g')) != NULL && pwd->pw_uid != 0) { /* Already checked this */ 40252527Sdavidn gid_t newgid = (gid_t) GETGRNAM(cnf->default_group)->gr_gid; 40352527Sdavidn if (newgid != pwd->pw_gid) { 40452527Sdavidn edited = 1; 40561762Sdavidn pwd->pw_gid = newgid; 40652527Sdavidn } 40752527Sdavidn } 40852527Sdavidn 40920253Sjoerg if ((arg = getarg(args, 'p')) != NULL) { 41052527Sdavidn if (*arg->val == '\0' || strcmp(arg->val, "0") == 0) { 41152527Sdavidn if (pwd->pw_change != 0) { 41252527Sdavidn pwd->pw_change = 0; 41352527Sdavidn edited = 1; 41452527Sdavidn } 41552527Sdavidn } 41620253Sjoerg else { 41720253Sjoerg time_t now = time(NULL); 41820253Sjoerg time_t expire = parse_date(now, arg->val); 41920253Sjoerg 42052527Sdavidn if (pwd->pw_change != expire) { 42152527Sdavidn pwd->pw_change = expire; 42252527Sdavidn edited = 1; 42352527Sdavidn } 42420253Sjoerg } 42520253Sjoerg } 42652527Sdavidn 42720267Sjoerg if ((arg = getarg(args, 'e')) != NULL) { 42852527Sdavidn if (*arg->val == '\0' || strcmp(arg->val, "0") == 0) { 42952527Sdavidn if (pwd->pw_expire != 0) { 43052527Sdavidn pwd->pw_expire = 0; 43152527Sdavidn edited = 1; 43252527Sdavidn } 43352527Sdavidn } 43420253Sjoerg else { 43520253Sjoerg time_t now = time(NULL); 43620253Sjoerg time_t expire = parse_date(now, arg->val); 43720253Sjoerg 43852527Sdavidn if (pwd->pw_expire != expire) { 43952527Sdavidn pwd->pw_expire = expire; 44052527Sdavidn edited = 1; 44152527Sdavidn } 44220253Sjoerg } 44320253Sjoerg } 44420253Sjoerg 44552527Sdavidn if ((arg = getarg(args, 's')) != NULL) { 44652527Sdavidn char *shell = shell_path(cnf->shelldir, cnf->shells, arg->val); 44752527Sdavidn if (shell == NULL) 44852527Sdavidn shell = ""; 44952527Sdavidn if (strcmp(shell, pwd->pw_shell) != 0) { 45052527Sdavidn pwd->pw_shell = shell; 45152527Sdavidn edited = 1; 45252527Sdavidn } 45352527Sdavidn } 45420253Sjoerg 45552527Sdavidn if (getarg(args, 'L')) { 45652527Sdavidn if (cnf->default_class == NULL) 45752527Sdavidn cnf->default_class = ""; 45852527Sdavidn if (strcmp(pwd->pw_class, cnf->default_class) != 0) { 45952527Sdavidn pwd->pw_class = cnf->default_class; 46052527Sdavidn edited = 1; 46152527Sdavidn } 46252527Sdavidn } 46352527Sdavidn 46420747Sdavidn if ((arg = getarg(args, 'd')) != NULL) { 465130629Srobert if (strcmp(pwd->pw_dir, arg->val)) 466130629Srobert edited = 1; 46720747Sdavidn if (stat(pwd->pw_dir = arg->val, &st) == -1) { 46820747Sdavidn if (getarg(args, 'm') == NULL && strcmp(pwd->pw_dir, "/nonexistent") != 0) 46930259Scharnier warnx("WARNING: home `%s' does not exist", pwd->pw_dir); 47020747Sdavidn } else if (!S_ISDIR(st.st_mode)) 47130259Scharnier warnx("WARNING: home `%s' is not a directory", pwd->pw_dir); 47220747Sdavidn } 47320747Sdavidn 474124382Siedowse if ((arg = getarg(args, 'w')) != NULL && 475124382Siedowse getarg(args, 'h') == NULL && getarg(args, 'H') == NULL) { 47664918Sgreen login_cap_t *lc; 47764918Sgreen 47864918Sgreen lc = login_getpwclass(pwd); 47964918Sgreen if (lc == NULL || 480252688Sdes login_setcryptfmt(lc, "sha512", NULL) == NULL) 48164918Sgreen warn("setting crypt(3) format"); 48264918Sgreen login_close(lc); 48320267Sjoerg pwd->pw_passwd = pw_password(cnf, args, pwd->pw_name); 48452527Sdavidn edited = 1; 48552527Sdavidn } 48620267Sjoerg 48720253Sjoerg } else { 48864918Sgreen login_cap_t *lc; 48952527Sdavidn 49052527Sdavidn /* 49152527Sdavidn * Add code 49252527Sdavidn */ 49352527Sdavidn 494284128Sbapt if (name == NULL) /* Required */ 49530259Scharnier errx(EX_DATAERR, "login name required"); 496284128Sbapt else if ((pwd = GETPWNAM(name)) != NULL) /* Exists */ 497284128Sbapt errx(EX_DATAERR, "login name `%s' already exists", name); 49820253Sjoerg 49920253Sjoerg /* 50020253Sjoerg * Now, set up defaults for a new user 50120253Sjoerg */ 50220253Sjoerg pwd = &fakeuser; 503284128Sbapt pwd->pw_name = name; 50420253Sjoerg pwd->pw_class = cnf->default_class ? cnf->default_class : ""; 50520253Sjoerg pwd->pw_uid = pw_uidpolicy(cnf, args); 506284118Sbapt pwd->pw_gid = pw_gidpolicy(args, pwd->pw_name, (gid_t) pwd->pw_uid); 50720253Sjoerg pwd->pw_change = pw_pwdpolicy(cnf, args); 50820253Sjoerg pwd->pw_expire = pw_exppolicy(cnf, args); 50920253Sjoerg pwd->pw_dir = pw_homepolicy(cnf, args, pwd->pw_name); 51020253Sjoerg pwd->pw_shell = pw_shellpolicy(cnf, args, NULL); 51164918Sgreen lc = login_getpwclass(pwd); 512272833Sdes if (lc == NULL || login_setcryptfmt(lc, "sha512", NULL) == NULL) 51364918Sgreen warn("setting crypt(3) format"); 51464918Sgreen login_close(lc); 51564918Sgreen pwd->pw_passwd = pw_password(cnf, args, pwd->pw_name); 51652527Sdavidn edited = 1; 51720253Sjoerg 51820253Sjoerg if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0) 51930259Scharnier warnx("WARNING: new account `%s' has a uid of 0 (superuser access!)", pwd->pw_name); 52020253Sjoerg } 52120253Sjoerg 52220253Sjoerg /* 52320253Sjoerg * Shared add/edit code 52420253Sjoerg */ 52552527Sdavidn if ((arg = getarg(args, 'c')) != NULL) { 526284110Sbapt char *gecos = pw_checkname(arg->val, 1); 52752527Sdavidn if (strcmp(pwd->pw_gecos, gecos) != 0) { 52852527Sdavidn pwd->pw_gecos = gecos; 52952527Sdavidn edited = 1; 53052527Sdavidn } 53152527Sdavidn } 53220253Sjoerg 533124382Siedowse if ((arg = getarg(args, 'h')) != NULL || 534124382Siedowse (arg = getarg(args, 'H')) != NULL) { 53563572Sdavidn if (strcmp(arg->val, "-") == 0) { 53663572Sdavidn if (!pwd->pw_passwd || *pwd->pw_passwd != '*') { 53763572Sdavidn pwd->pw_passwd = "*"; /* No access */ 53863572Sdavidn edited = 1; 53963572Sdavidn } 54063572Sdavidn } else { 54120253Sjoerg int fd = atoi(arg->val); 542124382Siedowse int precrypt = (arg->ch == 'H'); 54320253Sjoerg int b; 54420253Sjoerg int istty = isatty(fd); 54520253Sjoerg struct termios t; 54664918Sgreen login_cap_t *lc; 54720253Sjoerg 54820253Sjoerg if (istty) { 54920253Sjoerg if (tcgetattr(fd, &t) == -1) 55020253Sjoerg istty = 0; 55120253Sjoerg else { 55220253Sjoerg struct termios n = t; 55320253Sjoerg 55420253Sjoerg /* Disable echo */ 55520253Sjoerg n.c_lflag &= ~(ECHO); 55620253Sjoerg tcsetattr(fd, TCSANOW, &n); 557124382Siedowse printf("%s%spassword for user %s:", 558124382Siedowse (mode == M_UPDATE) ? "new " : "", 559124382Siedowse precrypt ? "encrypted " : "", 560124382Siedowse pwd->pw_name); 56120253Sjoerg fflush(stdout); 56220253Sjoerg } 56320253Sjoerg } 56420253Sjoerg b = read(fd, line, sizeof(line) - 1); 56520253Sjoerg if (istty) { /* Restore state */ 56620253Sjoerg tcsetattr(fd, TCSANOW, &t); 56720253Sjoerg fputc('\n', stdout); 56820253Sjoerg fflush(stdout); 56920253Sjoerg } 570283814Sbapt if (b < 0) 571283814Sbapt err(EX_IOERR, "-%c file descriptor", 572283814Sbapt precrypt ? 'H' : 'h'); 57320253Sjoerg line[b] = '\0'; 574168045Sle if ((p = strpbrk(line, "\r\n")) != NULL) 57520253Sjoerg *p = '\0'; 57620253Sjoerg if (!*line) 57730259Scharnier errx(EX_DATAERR, "empty password read on file descriptor %d", fd); 578124382Siedowse if (precrypt) { 579124382Siedowse if (strchr(line, ':') != NULL) 580124382Siedowse return EX_DATAERR; 581124382Siedowse pwd->pw_passwd = line; 582124382Siedowse } else { 583124382Siedowse lc = login_getpwclass(pwd); 584124382Siedowse if (lc == NULL || 585272833Sdes login_setcryptfmt(lc, "sha512", NULL) == NULL) 586124382Siedowse warn("setting crypt(3) format"); 587124382Siedowse login_close(lc); 588124382Siedowse pwd->pw_passwd = pw_pwcrypt(line); 589124382Siedowse } 59052527Sdavidn edited = 1; 59120253Sjoerg } 59220253Sjoerg } 59320267Sjoerg 59420267Sjoerg /* 59520267Sjoerg * Special case: -N only displays & exits 59620267Sjoerg */ 597284121Sbapt if (conf.dryrun) 598284126Sbapt return print_user(pwd); 59920267Sjoerg 60021330Sdavidn if (mode == M_ADD) { 60152527Sdavidn edited = 1; /* Always */ 60252502Sdavidn rc = addpwent(pwd); 603283814Sbapt if (rc == -1) 604283814Sbapt errx(EX_IOERR, "user '%s' already exists", 605283814Sbapt pwd->pw_name); 606283814Sbapt else if (rc != 0) 607283814Sbapt err(EX_IOERR, "passwd file update"); 60852502Sdavidn if (cnf->nispasswd && *cnf->nispasswd=='/') { 60952502Sdavidn rc = addnispwent(cnf->nispasswd, pwd); 61052502Sdavidn if (rc == -1) 61152502Sdavidn warnx("User '%s' already exists in NIS passwd", pwd->pw_name); 61252502Sdavidn else 61356000Sdavidn warn("NIS passwd update"); 61452502Sdavidn /* NOTE: we treat NIS-only update errors as non-fatal */ 61552502Sdavidn } 61652512Sdavidn } else if (mode == M_UPDATE || mode == M_LOCK || mode == M_UNLOCK) { 61752527Sdavidn if (edited) { /* Only updated this if required */ 618284128Sbapt rc = chgpwent(name, pwd); 619283814Sbapt if (rc == -1) 620283814Sbapt errx(EX_IOERR, "user '%s' does not exist (NIS?)", pwd->pw_name); 621283814Sbapt else if (rc != 0) 622283814Sbapt err(EX_IOERR, "passwd file update"); 62352527Sdavidn if ( cnf->nispasswd && *cnf->nispasswd=='/') { 624284128Sbapt rc = chgnispwent(cnf->nispasswd, name, pwd); 62552527Sdavidn if (rc == -1) 62652527Sdavidn warn("User '%s' not found in NIS passwd", pwd->pw_name); 62752527Sdavidn else 62856000Sdavidn warn("NIS passwd update"); 62952527Sdavidn /* NOTE: NIS-only update errors are not fatal */ 63052527Sdavidn } 63152502Sdavidn } 63221330Sdavidn } 63321330Sdavidn 63420253Sjoerg /* 63520253Sjoerg * Ok, user is created or changed - now edit group file 63620253Sjoerg */ 63720253Sjoerg 638242349Sbapt if (mode == M_ADD || getarg(args, 'G') != NULL) { 639273779Sbapt int i, j; 640273779Sbapt /* First remove the user from all group */ 641273779Sbapt SETGRENT(); 642273779Sbapt while ((grp = GETGRENT()) != NULL) { 643273779Sbapt char group[MAXLOGNAME]; 644273779Sbapt if (grp->gr_mem == NULL) 645273779Sbapt continue; 646273779Sbapt for (i = 0; grp->gr_mem[i] != NULL; i++) { 647273779Sbapt if (strcmp(grp->gr_mem[i] , pwd->pw_name) != 0) 648273779Sbapt continue; 649273779Sbapt for (j = i; grp->gr_mem[j] != NULL ; j++) 650273779Sbapt grp->gr_mem[j] = grp->gr_mem[j+1]; 651273779Sbapt strlcpy(group, grp->gr_name, MAXLOGNAME); 652273779Sbapt chggrent(group, grp); 653273779Sbapt } 654273779Sbapt } 655273779Sbapt ENDGRENT(); 656273779Sbapt 657273779Sbapt /* now add to group where needed */ 658242349Sbapt for (i = 0; cnf->groups[i] != NULL; i++) { 659242349Sbapt grp = GETGRNAM(cnf->groups[i]); 660244737Sbapt grp = gr_add(grp, pwd->pw_name); 661244737Sbapt /* 662244737Sbapt * grp can only be NULL in 2 cases: 663244737Sbapt * - the new member is already a member 664244737Sbapt * - a problem with memory occurs 665244737Sbapt * in both cases we want to skip now. 666244737Sbapt */ 667244737Sbapt if (grp == NULL) 668242349Sbapt continue; 669242349Sbapt chggrent(cnf->groups[i], grp); 670245114Smjg free(grp); 671242349Sbapt } 672242349Sbapt } 673242349Sbapt 674242349Sbapt 67561759Sdavidn /* go get a current version of pwd */ 676284128Sbapt pwd = GETPWNAM(name); 67761759Sdavidn if (pwd == NULL) { 67861759Sdavidn /* This will fail when we rename, so special case that */ 67961759Sdavidn if (mode == M_UPDATE && (arg = getarg(args, 'l')) != NULL) { 680284128Sbapt name = arg->val; /* update new name */ 681284128Sbapt pwd = GETPWNAM(name); /* refetch renamed rec */ 68261759Sdavidn } 68361759Sdavidn } 68461759Sdavidn if (pwd == NULL) /* can't go on without this */ 685284128Sbapt errx(EX_NOUSER, "user '%s' disappeared during update", name); 68620253Sjoerg 68744229Sdavidn grp = GETGRGID(pwd->pw_gid); 688283842Sbapt pw_log(cnf, mode, W_USER, "%s(%u):%s(%u):%s:%s:%s", 689283842Sbapt pwd->pw_name, pwd->pw_uid, 690283842Sbapt grp ? grp->gr_name : "unknown", (grp ? grp->gr_gid : (uid_t)-1), 69120253Sjoerg pwd->pw_gecos, pwd->pw_dir, pwd->pw_shell); 69220253Sjoerg 69320253Sjoerg /* 69420253Sjoerg * If adding, let's touch and chown the user's mail file. This is not 69520253Sjoerg * strictly necessary under BSD with a 0755 maildir but it also 69620253Sjoerg * doesn't hurt anything to create the empty mailfile 69720253Sjoerg */ 69820253Sjoerg if (mode == M_ADD) { 699283961Sbapt if (PWALTDIR() != PWF_ALT) { 700283961Sbapt arg = getarg(args, 'R'); 701283961Sbapt snprintf(path, sizeof(path), "%s%s/%s", 702283961Sbapt arg ? arg->val : "", _PATH_MAILDIR, pwd->pw_name); 703283961Sbapt close(open(path, O_RDWR | O_CREAT, 0600)); /* Preserve contents & 70444229Sdavidn * mtime */ 705283961Sbapt chown(path, pwd->pw_uid, pwd->pw_gid); 70620253Sjoerg } 70720253Sjoerg } 70852527Sdavidn 70920253Sjoerg /* 71082868Sdd * Let's create and populate the user's home directory. Note 71120253Sjoerg * that this also `works' for editing users if -m is used, but 71220253Sjoerg * existing files will *not* be overwritten. 71320253Sjoerg */ 714283961Sbapt if (PWALTDIR() != PWF_ALT && getarg(args, 'm') != NULL && pwd->pw_dir && 715283961Sbapt *pwd->pw_dir == '/' && pwd->pw_dir[1]) 716284118Sbapt create_and_populate_homedir(mode, pwd); 71752527Sdavidn 71882868Sdd /* 71982868Sdd * Finally, send mail to the new user as well, if we are asked to 72082868Sdd */ 72182868Sdd if (mode == M_ADD && !PWALTDIR() && cnf->newmail && *cnf->newmail && (fp = fopen(cnf->newmail, "r")) != NULL) { 72282868Sdd FILE *pfp = popen(_PATH_SENDMAIL " -t", "w"); 72382868Sdd 72482868Sdd if (pfp == NULL) 72582868Sdd warn("sendmail"); 72682868Sdd else { 72782868Sdd fprintf(pfp, "From: root\n" "To: %s\n" "Subject: Welcome!\n\n", pwd->pw_name); 72882868Sdd while (fgets(line, sizeof(line), fp) != NULL) { 72982868Sdd /* Do substitutions? */ 73082868Sdd fputs(line, pfp); 73182868Sdd } 73282868Sdd pclose(pfp); 733283842Sbapt pw_log(cnf, mode, W_USER, "%s(%u) new user mail sent", 734283842Sbapt pwd->pw_name, pwd->pw_uid); 73582868Sdd } 73682868Sdd fclose(fp); 73782868Sdd } 73882868Sdd 73920267Sjoerg return EXIT_SUCCESS; 74020253Sjoerg} 74120253Sjoerg 74220253Sjoerg 74320253Sjoergstatic uid_t 74420253Sjoergpw_uidpolicy(struct userconf * cnf, struct cargs * args) 74520253Sjoerg{ 74620253Sjoerg struct passwd *pwd; 74720253Sjoerg uid_t uid = (uid_t) - 1; 74820253Sjoerg struct carg *a_uid = getarg(args, 'u'); 74920253Sjoerg 75020253Sjoerg /* 75120253Sjoerg * Check the given uid, if any 75220253Sjoerg */ 75320253Sjoerg if (a_uid != NULL) { 75420253Sjoerg uid = (uid_t) atol(a_uid->val); 75520253Sjoerg 75644229Sdavidn if ((pwd = GETPWUID(uid)) != NULL && getarg(args, 'o') == NULL) 757283842Sbapt errx(EX_DATAERR, "uid `%u' has already been allocated", pwd->pw_uid); 75820253Sjoerg } else { 75920253Sjoerg struct bitmap bm; 76020253Sjoerg 76120253Sjoerg /* 76220253Sjoerg * We need to allocate the next available uid under one of 76320253Sjoerg * two policies a) Grab the first unused uid b) Grab the 76420253Sjoerg * highest possible unused uid 76520253Sjoerg */ 76620253Sjoerg if (cnf->min_uid >= cnf->max_uid) { /* Sanity 76720253Sjoerg * claus^H^H^H^Hheck */ 76820253Sjoerg cnf->min_uid = 1000; 76920253Sjoerg cnf->max_uid = 32000; 77020253Sjoerg } 77120253Sjoerg bm = bm_alloc(cnf->max_uid - cnf->min_uid + 1); 77220253Sjoerg 77320253Sjoerg /* 77420253Sjoerg * Now, let's fill the bitmap from the password file 77520253Sjoerg */ 77644229Sdavidn SETPWENT(); 77744229Sdavidn while ((pwd = GETPWENT()) != NULL) 77844229Sdavidn if (pwd->pw_uid >= (uid_t) cnf->min_uid && pwd->pw_uid <= (uid_t) cnf->max_uid) 77920253Sjoerg bm_setbit(&bm, pwd->pw_uid - cnf->min_uid); 78044229Sdavidn ENDPWENT(); 78120253Sjoerg 78220253Sjoerg /* 78320253Sjoerg * Then apply the policy, with fallback to reuse if necessary 78420253Sjoerg */ 78520253Sjoerg if (cnf->reuse_uids || (uid = (uid_t) (bm_lastset(&bm) + cnf->min_uid + 1)) > cnf->max_uid) 78620253Sjoerg uid = (uid_t) (bm_firstunset(&bm) + cnf->min_uid); 78720253Sjoerg 78820253Sjoerg /* 78920253Sjoerg * Another sanity check 79020253Sjoerg */ 79120253Sjoerg if (uid < cnf->min_uid || uid > cnf->max_uid) 79230259Scharnier errx(EX_SOFTWARE, "unable to allocate a new uid - range fully used"); 79320253Sjoerg bm_dealloc(&bm); 79420253Sjoerg } 79520253Sjoerg return uid; 79620253Sjoerg} 79720253Sjoerg 79820253Sjoerg 79920253Sjoergstatic uid_t 800284118Sbaptpw_gidpolicy(struct cargs * args, char *nam, gid_t prefer) 80120253Sjoerg{ 80220253Sjoerg struct group *grp; 80320253Sjoerg gid_t gid = (uid_t) - 1; 80420253Sjoerg struct carg *a_gid = getarg(args, 'g'); 805284118Sbapt struct userconf *cnf = conf.userconf; 80620253Sjoerg 80720253Sjoerg /* 80820253Sjoerg * If no arg given, see if default can help out 80920253Sjoerg */ 81020253Sjoerg if (a_gid == NULL && cnf->default_group && *cnf->default_group) 81120253Sjoerg a_gid = addarg(args, 'g', cnf->default_group); 81220253Sjoerg 81320253Sjoerg /* 81420253Sjoerg * Check the given gid, if any 81520253Sjoerg */ 81644229Sdavidn SETGRENT(); 81720253Sjoerg if (a_gid != NULL) { 81844229Sdavidn if ((grp = GETGRNAM(a_gid->val)) == NULL) { 81920253Sjoerg gid = (gid_t) atol(a_gid->val); 82061957Sache if ((gid == 0 && !isdigit((unsigned char)*a_gid->val)) || (grp = GETGRGID(gid)) == NULL) 82130259Scharnier errx(EX_NOUSER, "group `%s' is not defined", a_gid->val); 82220253Sjoerg } 82320253Sjoerg gid = grp->gr_gid; 824262865Sjulian } else if ((grp = GETGRNAM(nam)) != NULL && 825262865Sjulian (grp->gr_mem == NULL || grp->gr_mem[0] == NULL)) { 82620267Sjoerg gid = grp->gr_gid; /* Already created? Use it anyway... */ 82720253Sjoerg } else { 82820253Sjoerg struct cargs grpargs; 82920253Sjoerg char tmp[32]; 83020253Sjoerg 83120253Sjoerg LIST_INIT(&grpargs); 83220253Sjoerg 83320253Sjoerg /* 83420253Sjoerg * We need to auto-create a group with the user's name. We 83520253Sjoerg * can send all the appropriate output to our sister routine 83620253Sjoerg * bit first see if we can create a group with gid==uid so we 83720253Sjoerg * can keep the user and group ids in sync. We purposely do 83820253Sjoerg * NOT check the gid range if we can force the sync. If the 83920253Sjoerg * user's name dups an existing group, then the group add 84020253Sjoerg * function will happily handle that case for us and exit. 84120253Sjoerg */ 84244229Sdavidn if (GETGRGID(prefer) == NULL) { 843282700Sbapt snprintf(tmp, sizeof(tmp), "%u", prefer); 84420253Sjoerg addarg(&grpargs, 'g', tmp); 84520253Sjoerg } 846284121Sbapt if (conf.dryrun) { 84720267Sjoerg addarg(&grpargs, 'q', NULL); 848284128Sbapt gid = pw_group(M_NEXT, nam, -1, &grpargs); 84920267Sjoerg } 85020267Sjoerg else 85120267Sjoerg { 852284128Sbapt pw_group(M_ADD, nam, -1, &grpargs); 85344229Sdavidn if ((grp = GETGRNAM(nam)) != NULL) 85420267Sjoerg gid = grp->gr_gid; 85520267Sjoerg } 85670486Sben a_gid = LIST_FIRST(&grpargs); 85720253Sjoerg while (a_gid != NULL) { 85870486Sben struct carg *t = LIST_NEXT(a_gid, list); 85920253Sjoerg LIST_REMOVE(a_gid, list); 86020253Sjoerg a_gid = t; 86120253Sjoerg } 86220253Sjoerg } 86344229Sdavidn ENDGRENT(); 86420253Sjoerg return gid; 86520253Sjoerg} 86620253Sjoerg 86720253Sjoerg 86820253Sjoergstatic time_t 86920253Sjoergpw_pwdpolicy(struct userconf * cnf, struct cargs * args) 87020253Sjoerg{ 87120253Sjoerg time_t result = 0; 87220253Sjoerg time_t now = time(NULL); 87327831Sdavidn struct carg *arg = getarg(args, 'p'); 87420253Sjoerg 87520253Sjoerg if (arg != NULL) { 87620253Sjoerg if ((result = parse_date(now, arg->val)) == now) 87730259Scharnier errx(EX_DATAERR, "invalid date/time `%s'", arg->val); 87820253Sjoerg } else if (cnf->password_days > 0) 87920253Sjoerg result = now + ((long) cnf->password_days * 86400L); 88020253Sjoerg return result; 88120253Sjoerg} 88220253Sjoerg 88320253Sjoerg 88420253Sjoergstatic time_t 88520253Sjoergpw_exppolicy(struct userconf * cnf, struct cargs * args) 88620253Sjoerg{ 88720253Sjoerg time_t result = 0; 88820253Sjoerg time_t now = time(NULL); 88920253Sjoerg struct carg *arg = getarg(args, 'e'); 89020253Sjoerg 89120253Sjoerg if (arg != NULL) { 89220253Sjoerg if ((result = parse_date(now, arg->val)) == now) 89330259Scharnier errx(EX_DATAERR, "invalid date/time `%s'", arg->val); 89420253Sjoerg } else if (cnf->expire_days > 0) 89520253Sjoerg result = now + ((long) cnf->expire_days * 86400L); 89620253Sjoerg return result; 89720253Sjoerg} 89820253Sjoerg 89920253Sjoerg 90020253Sjoergstatic char * 90120253Sjoergpw_homepolicy(struct userconf * cnf, struct cargs * args, char const * user) 90220253Sjoerg{ 90320253Sjoerg struct carg *arg = getarg(args, 'd'); 904282699Sbapt static char home[128]; 90520253Sjoerg 90620253Sjoerg if (arg) 907282699Sbapt return (arg->val); 90820253Sjoerg 909282699Sbapt if (cnf->home == NULL || *cnf->home == '\0') 910282699Sbapt errx(EX_CONFIG, "no base home directory set"); 911282699Sbapt snprintf(home, sizeof(home), "%s/%s", cnf->home, user); 912282699Sbapt 913282699Sbapt return (home); 91420253Sjoerg} 91520253Sjoerg 91620253Sjoergstatic char * 91720253Sjoergshell_path(char const * path, char *shells[], char *sh) 91820253Sjoerg{ 91920253Sjoerg if (sh != NULL && (*sh == '/' || *sh == '\0')) 92020253Sjoerg return sh; /* specified full path or forced none */ 92120253Sjoerg else { 92220253Sjoerg char *p; 92320253Sjoerg char paths[_UC_MAXLINE]; 92420253Sjoerg 92520253Sjoerg /* 92620253Sjoerg * We need to search paths 92720253Sjoerg */ 928130633Srobert strlcpy(paths, path, sizeof(paths)); 92920253Sjoerg for (p = strtok(paths, ": \t\r\n"); p != NULL; p = strtok(NULL, ": \t\r\n")) { 93020253Sjoerg int i; 93120253Sjoerg static char shellpath[256]; 93220253Sjoerg 93320253Sjoerg if (sh != NULL) { 934282700Sbapt snprintf(shellpath, sizeof(shellpath), "%s/%s", p, sh); 93520253Sjoerg if (access(shellpath, X_OK) == 0) 93620253Sjoerg return shellpath; 93720253Sjoerg } else 93820253Sjoerg for (i = 0; i < _UC_MAXSHELLS && shells[i] != NULL; i++) { 939282700Sbapt snprintf(shellpath, sizeof(shellpath), "%s/%s", p, shells[i]); 94020253Sjoerg if (access(shellpath, X_OK) == 0) 94120253Sjoerg return shellpath; 94220253Sjoerg } 94320253Sjoerg } 94420253Sjoerg if (sh == NULL) 94530259Scharnier errx(EX_OSFILE, "can't find shell `%s' in shell paths", sh); 94630259Scharnier errx(EX_CONFIG, "no default shell available or defined"); 94720253Sjoerg return NULL; 94820253Sjoerg } 94920253Sjoerg} 95020253Sjoerg 95120253Sjoerg 95220253Sjoergstatic char * 95320253Sjoergpw_shellpolicy(struct userconf * cnf, struct cargs * args, char *newshell) 95420253Sjoerg{ 95520253Sjoerg char *sh = newshell; 95620253Sjoerg struct carg *arg = getarg(args, 's'); 95720253Sjoerg 95820253Sjoerg if (newshell == NULL && arg != NULL) 95920253Sjoerg sh = arg->val; 96020253Sjoerg return shell_path(cnf->shelldir, cnf->shells, sh ? sh : cnf->shell_default); 96120253Sjoerg} 96220253Sjoerg 963179365Santoine#define SALTSIZE 32 96420253Sjoerg 965179365Santoinestatic char const chars[] = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ./"; 966179365Santoine 96720253Sjoergchar * 96820253Sjoergpw_pwcrypt(char *password) 96920253Sjoerg{ 97020253Sjoerg int i; 971179365Santoine char salt[SALTSIZE + 1]; 972231994Skevlo char *cryptpw; 97320253Sjoerg 97420253Sjoerg static char buf[256]; 97520253Sjoerg 97620253Sjoerg /* 97720253Sjoerg * Calculate a salt value 97820253Sjoerg */ 979179365Santoine for (i = 0; i < SALTSIZE; i++) 980181785Sache salt[i] = chars[arc4random_uniform(sizeof(chars) - 1)]; 981179365Santoine salt[SALTSIZE] = '\0'; 98220253Sjoerg 983231994Skevlo cryptpw = crypt(password, salt); 984231994Skevlo if (cryptpw == NULL) 985231994Skevlo errx(EX_CONFIG, "crypt(3) failure"); 986231994Skevlo return strcpy(buf, cryptpw); 98720253Sjoerg} 98820253Sjoerg 98920590Sdavidn 99020253Sjoergstatic char * 99120253Sjoergpw_password(struct userconf * cnf, struct cargs * args, char const * user) 99220253Sjoerg{ 99320253Sjoerg int i, l; 99420253Sjoerg char pwbuf[32]; 99520253Sjoerg 99620253Sjoerg switch (cnf->default_password) { 99720253Sjoerg case -1: /* Random password */ 99873563Skris l = (arc4random() % 8 + 8); /* 8 - 16 chars */ 99920253Sjoerg for (i = 0; i < l; i++) 1000181785Sache pwbuf[i] = chars[arc4random_uniform(sizeof(chars)-1)]; 100120253Sjoerg pwbuf[i] = '\0'; 100220253Sjoerg 100320253Sjoerg /* 100420253Sjoerg * We give this information back to the user 100520253Sjoerg */ 1006124382Siedowse if (getarg(args, 'h') == NULL && getarg(args, 'H') == NULL && 1007284121Sbapt !conf.dryrun) { 100861957Sache if (isatty(STDOUT_FILENO)) 100920712Sdavidn printf("Password for '%s' is: ", user); 101020253Sjoerg printf("%s\n", pwbuf); 101120253Sjoerg fflush(stdout); 101220253Sjoerg } 101320253Sjoerg break; 101420253Sjoerg 101520253Sjoerg case -2: /* No password at all! */ 101620253Sjoerg return ""; 101720253Sjoerg 101820253Sjoerg case 0: /* No login - default */ 101920253Sjoerg default: 102020253Sjoerg return "*"; 102120253Sjoerg 102220253Sjoerg case 1: /* user's name */ 1023130633Srobert strlcpy(pwbuf, user, sizeof(pwbuf)); 102420253Sjoerg break; 102520253Sjoerg } 102620253Sjoerg return pw_pwcrypt(pwbuf); 102720253Sjoerg} 102820253Sjoerg 1029284111Sbaptstatic int 1030284128Sbaptdelete_user(struct userconf *cnf, struct passwd *pwd, char *name, 1031284111Sbapt int delete, int mode) 1032284111Sbapt{ 1033284111Sbapt char file[MAXPATHLEN]; 1034284111Sbapt char home[MAXPATHLEN]; 1035284111Sbapt uid_t uid = pwd->pw_uid; 1036284111Sbapt struct group *gr, *grp; 1037284111Sbapt char grname[LOGNAMESIZE]; 1038284111Sbapt int rc; 1039284111Sbapt struct stat st; 104020253Sjoerg 1041284111Sbapt if (strcmp(pwd->pw_name, "root") == 0) 1042284111Sbapt errx(EX_DATAERR, "cannot remove user 'root'"); 1043284111Sbapt 1044284111Sbapt if (!PWALTDIR()) { 1045284111Sbapt /* 1046284111Sbapt * Remove opie record from /etc/opiekeys 1047284111Sbapt */ 1048284111Sbapt 1049284111Sbapt rmopie(pwd->pw_name); 1050284111Sbapt 1051284111Sbapt /* 1052284111Sbapt * Remove crontabs 1053284111Sbapt */ 1054284111Sbapt snprintf(file, sizeof(file), "/var/cron/tabs/%s", pwd->pw_name); 1055284111Sbapt if (access(file, F_OK) == 0) { 1056284111Sbapt snprintf(file, sizeof(file), "crontab -u %s -r", pwd->pw_name); 1057284111Sbapt system(file); 1058284111Sbapt } 1059284111Sbapt } 1060284111Sbapt /* 1061284111Sbapt * Save these for later, since contents of pwd may be 1062284111Sbapt * invalidated by deletion 1063284111Sbapt */ 1064284111Sbapt snprintf(file, sizeof(file), "%s/%s", _PATH_MAILDIR, pwd->pw_name); 1065284111Sbapt strlcpy(home, pwd->pw_dir, sizeof(home)); 1066284111Sbapt gr = GETGRGID(pwd->pw_gid); 1067284111Sbapt if (gr != NULL) 1068284111Sbapt strlcpy(grname, gr->gr_name, LOGNAMESIZE); 1069284111Sbapt else 1070284111Sbapt grname[0] = '\0'; 1071284111Sbapt 1072284111Sbapt rc = delpwent(pwd); 1073284111Sbapt if (rc == -1) 1074284111Sbapt err(EX_IOERR, "user '%s' does not exist", pwd->pw_name); 1075284111Sbapt else if (rc != 0) 1076284111Sbapt err(EX_IOERR, "passwd update"); 1077284111Sbapt 1078284111Sbapt if (cnf->nispasswd && *cnf->nispasswd=='/') { 1079284128Sbapt rc = delnispwent(cnf->nispasswd, name); 1080284111Sbapt if (rc == -1) 1081284111Sbapt warnx("WARNING: user '%s' does not exist in NIS passwd", pwd->pw_name); 1082284111Sbapt else if (rc != 0) 1083284111Sbapt warn("WARNING: NIS passwd update"); 1084284111Sbapt /* non-fatal */ 1085284111Sbapt } 1086284111Sbapt 1087284128Sbapt grp = GETGRNAM(name); 1088284111Sbapt if (grp != NULL && 1089284111Sbapt (grp->gr_mem == NULL || *grp->gr_mem == NULL) && 1090284128Sbapt strcmp(name, grname) == 0) 1091284128Sbapt delgrent(GETGRNAM(name)); 1092284111Sbapt SETGRENT(); 1093284111Sbapt while ((grp = GETGRENT()) != NULL) { 1094284111Sbapt int i, j; 1095284111Sbapt char group[MAXLOGNAME]; 1096284113Sbapt if (grp->gr_mem == NULL) 1097284113Sbapt continue; 1098284113Sbapt 1099284113Sbapt for (i = 0; grp->gr_mem[i] != NULL; i++) { 1100284128Sbapt if (strcmp(grp->gr_mem[i], name) != 0) 1101284113Sbapt continue; 1102284113Sbapt 1103284113Sbapt for (j = i; grp->gr_mem[j] != NULL; j++) 1104284113Sbapt grp->gr_mem[j] = grp->gr_mem[j+1]; 1105284113Sbapt strlcpy(group, grp->gr_name, MAXLOGNAME); 1106284113Sbapt chggrent(group, grp); 1107284111Sbapt } 1108284111Sbapt } 1109284111Sbapt ENDGRENT(); 1110284111Sbapt 1111284128Sbapt pw_log(cnf, mode, W_USER, "%s(%u) account removed", name, uid); 1112284111Sbapt 1113284117Sbapt if (!PWALTDIR()) { 1114284111Sbapt /* 1115284111Sbapt * Remove mail file 1116284111Sbapt */ 1117284111Sbapt remove(file); 1118284111Sbapt 1119284111Sbapt /* 1120284111Sbapt * Remove at jobs 1121284111Sbapt */ 1122284111Sbapt if (getpwuid(uid) == NULL) 1123284111Sbapt rmat(uid); 1124284111Sbapt 1125284111Sbapt /* 1126284111Sbapt * Remove home directory and contents 1127284111Sbapt */ 1128284112Sbapt if (delete && *home == '/' && getpwuid(uid) == NULL && 1129284112Sbapt stat(home, &st) != -1) { 1130284112Sbapt rm_r(home, uid); 1131284112Sbapt pw_log(cnf, mode, W_USER, "%s(%u) home '%s' %sremoved", 1132284128Sbapt name, uid, home, 1133284112Sbapt stat(home, &st) == -1 ? "" : "not completely "); 1134284111Sbapt } 1135284111Sbapt } 1136284111Sbapt 1137284111Sbapt return (EXIT_SUCCESS); 1138284111Sbapt} 1139284111Sbapt 114020253Sjoergstatic int 1141284124Sbaptprint_user(struct passwd * pwd) 114220253Sjoerg{ 1143284122Sbapt if (!conf.pretty) { 1144242349Sbapt char *buf; 114520253Sjoerg 1146284124Sbapt if (!conf.v7) 1147242349Sbapt pwd->pw_passwd = (pwd->pw_passwd == NULL) ? "" : "*"; 1148242349Sbapt 1149284124Sbapt buf = conf.v7 ? pw_make_v7(pwd) : pw_make(pwd); 1150242349Sbapt printf("%s\n", buf); 1151242349Sbapt free(buf); 115220253Sjoerg } else { 115320267Sjoerg int j; 115420253Sjoerg char *p; 115544229Sdavidn struct group *grp = GETGRGID(pwd->pw_gid); 115620253Sjoerg char uname[60] = "User &", office[60] = "[None]", 115720253Sjoerg wphone[60] = "[None]", hphone[60] = "[None]"; 115820590Sdavidn char acexpire[32] = "[None]", pwexpire[32] = "[None]"; 115920590Sdavidn struct tm * tptr; 116020253Sjoerg 116120253Sjoerg if ((p = strtok(pwd->pw_gecos, ",")) != NULL) { 1162130633Srobert strlcpy(uname, p, sizeof(uname)); 116320253Sjoerg if ((p = strtok(NULL, ",")) != NULL) { 1164130633Srobert strlcpy(office, p, sizeof(office)); 116520253Sjoerg if ((p = strtok(NULL, ",")) != NULL) { 1166130633Srobert strlcpy(wphone, p, sizeof(wphone)); 116720253Sjoerg if ((p = strtok(NULL, "")) != NULL) { 1168130633Srobert strlcpy(hphone, p, 1169130633Srobert sizeof(hphone)); 117020253Sjoerg } 117120253Sjoerg } 117220253Sjoerg } 117320253Sjoerg } 117420253Sjoerg /* 117520253Sjoerg * Handle '&' in gecos field 117620253Sjoerg */ 117720253Sjoerg if ((p = strchr(uname, '&')) != NULL) { 117820253Sjoerg int l = strlen(pwd->pw_name); 117920253Sjoerg int m = strlen(p); 118020253Sjoerg 118120253Sjoerg memmove(p + l, p + 1, m); 118220253Sjoerg memmove(p, pwd->pw_name, l); 118361957Sache *p = (char) toupper((unsigned char)*p); 118420253Sjoerg } 118520590Sdavidn if (pwd->pw_expire > (time_t)0 && (tptr = localtime(&pwd->pw_expire)) != NULL) 118674569Sache strftime(acexpire, sizeof acexpire, "%c", tptr); 118761957Sache if (pwd->pw_change > (time_t)0 && (tptr = localtime(&pwd->pw_change)) != NULL) 118874569Sache strftime(pwexpire, sizeof pwexpire, "%c", tptr); 1189283842Sbapt printf("Login Name: %-15s #%-12u Group: %-15s #%u\n" 119020747Sdavidn " Full Name: %s\n" 119120747Sdavidn " Home: %-26.26s Class: %s\n" 119220747Sdavidn " Shell: %-26.26s Office: %s\n" 119320747Sdavidn "Work Phone: %-26.26s Home Phone: %s\n" 119420747Sdavidn "Acc Expire: %-26.26s Pwd Expire: %s\n", 1195283842Sbapt pwd->pw_name, pwd->pw_uid, 1196283842Sbapt grp ? grp->gr_name : "(invalid)", pwd->pw_gid, 119720253Sjoerg uname, pwd->pw_dir, pwd->pw_class, 119820590Sdavidn pwd->pw_shell, office, wphone, hphone, 119920590Sdavidn acexpire, pwexpire); 120044229Sdavidn SETGRENT(); 120120267Sjoerg j = 0; 120244229Sdavidn while ((grp=GETGRENT()) != NULL) 120320267Sjoerg { 120420267Sjoerg int i = 0; 1205262865Sjulian if (grp->gr_mem != NULL) { 1206262865Sjulian while (grp->gr_mem[i] != NULL) 120720267Sjoerg { 1208262865Sjulian if (strcmp(grp->gr_mem[i], pwd->pw_name)==0) 1209262865Sjulian { 1210262865Sjulian printf(j++ == 0 ? " Groups: %s" : ",%s", grp->gr_name); 1211262865Sjulian break; 1212262865Sjulian } 1213262865Sjulian ++i; 121420267Sjoerg } 121520267Sjoerg } 121620267Sjoerg } 121744229Sdavidn ENDGRENT(); 121861957Sache printf("%s", j ? "\n" : ""); 121920253Sjoerg } 122020267Sjoerg return EXIT_SUCCESS; 122120253Sjoerg} 122220253Sjoerg 1223284110Sbaptchar * 1224284110Sbaptpw_checkname(char *name, int gecos) 122520253Sjoerg{ 1226109961Sgad char showch[8]; 1227284110Sbapt const char *badchars, *ch, *showtype; 1228109961Sgad int reject; 122920253Sjoerg 1230109961Sgad ch = name; 1231109961Sgad reject = 0; 1232109961Sgad if (gecos) { 1233109961Sgad /* See if the name is valid as a gecos (comment) field. */ 1234109961Sgad badchars = ":!@"; 1235109961Sgad showtype = "gecos field"; 1236109961Sgad } else { 1237109961Sgad /* See if the name is valid as a userid or group. */ 1238109961Sgad badchars = " ,\t:+&#%$^()!@~*?<>=|\\/\""; 1239109961Sgad showtype = "userid/group name"; 1240109961Sgad /* Userids and groups can not have a leading '-'. */ 1241109961Sgad if (*ch == '-') 1242109961Sgad reject = 1; 124320253Sjoerg } 1244109961Sgad if (!reject) { 1245109961Sgad while (*ch) { 1246109961Sgad if (strchr(badchars, *ch) != NULL || *ch < ' ' || 1247109961Sgad *ch == 127) { 1248109961Sgad reject = 1; 1249109961Sgad break; 1250109961Sgad } 1251109961Sgad /* 8-bit characters are only allowed in GECOS fields */ 1252109961Sgad if (!gecos && (*ch & 0x80)) { 1253109961Sgad reject = 1; 1254109961Sgad break; 1255109961Sgad } 1256109961Sgad ch++; 1257109961Sgad } 1258109961Sgad } 1259109961Sgad /* 1260109961Sgad * A `$' is allowed as the final character for userids and groups, 1261109961Sgad * mainly for the benefit of samba. 1262109961Sgad */ 1263109961Sgad if (reject && !gecos) { 1264109961Sgad if (*ch == '$' && *(ch + 1) == '\0') { 1265109961Sgad reject = 0; 1266109961Sgad ch++; 1267109961Sgad } 1268109961Sgad } 1269109961Sgad if (reject) { 1270109961Sgad snprintf(showch, sizeof(showch), (*ch >= ' ' && *ch < 127) 1271109961Sgad ? "`%c'" : "0x%02x", *ch); 1272228673Sdim errx(EX_DATAERR, "invalid character %s at position %td in %s", 1273109961Sgad showch, (ch - name), showtype); 1274109961Sgad } 1275109961Sgad if (!gecos && (ch - name) > LOGNAMESIZE) 1276109961Sgad errx(EX_DATAERR, "name too long `%s' (max is %d)", name, 1277109961Sgad LOGNAMESIZE); 1278284110Sbapt 1279284110Sbapt return (name); 128020253Sjoerg} 128120253Sjoerg 128220253Sjoerg 128320253Sjoergstatic void 128420253Sjoergrmat(uid_t uid) 128520253Sjoerg{ 128620253Sjoerg DIR *d = opendir("/var/at/jobs"); 128720253Sjoerg 128820253Sjoerg if (d != NULL) { 128920253Sjoerg struct dirent *e; 129020253Sjoerg 129120253Sjoerg while ((e = readdir(d)) != NULL) { 129220253Sjoerg struct stat st; 129320253Sjoerg 129420253Sjoerg if (strncmp(e->d_name, ".lock", 5) != 0 && 129520253Sjoerg stat(e->d_name, &st) == 0 && 129620253Sjoerg !S_ISDIR(st.st_mode) && 129720253Sjoerg st.st_uid == uid) { 129820253Sjoerg char tmp[MAXPATHLEN]; 129920253Sjoerg 1300282700Sbapt snprintf(tmp, sizeof(tmp), "/usr/bin/atrm %s", e->d_name); 130120253Sjoerg system(tmp); 130220253Sjoerg } 130320253Sjoerg } 130420253Sjoerg closedir(d); 130520253Sjoerg } 130620253Sjoerg} 130720747Sdavidn 130820747Sdavidnstatic void 130985145Sachermopie(char const * name) 131020747Sdavidn{ 131185145Sache static const char etcopie[] = "/etc/opiekeys"; 131285145Sache FILE *fp = fopen(etcopie, "r+"); 131320747Sdavidn 131421052Sdavidn if (fp != NULL) { 131521052Sdavidn char tmp[1024]; 131621052Sdavidn off_t atofs = 0; 131721052Sdavidn int length = strlen(name); 131820747Sdavidn 131921052Sdavidn while (fgets(tmp, sizeof tmp, fp) != NULL) { 132021052Sdavidn if (strncmp(name, tmp, length) == 0 && tmp[length]==' ') { 132121052Sdavidn if (fseek(fp, atofs, SEEK_SET) == 0) { 132221052Sdavidn fwrite("#", 1, 1, fp); /* Comment username out */ 132321052Sdavidn } 132421052Sdavidn break; 132520747Sdavidn } 132621052Sdavidn atofs = ftell(fp); 132720747Sdavidn } 132821052Sdavidn /* 132921052Sdavidn * If we got an error of any sort, don't update! 133021052Sdavidn */ 133121052Sdavidn fclose(fp); 133220747Sdavidn } 133320747Sdavidn} 133420747Sdavidn 1335