pw_user.c revision 284124
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 284124 2015-06-07 15:33:08Z 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, 55284111Sbapt struct carg *a_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 122284118Sbaptpw_user(int mode, struct cargs * args) 12320253Sjoerg{ 12452527Sdavidn int rc, edited = 0; 12520253Sjoerg char *p = NULL; 12652512Sdavidn char *passtmp; 12720253Sjoerg struct carg *a_name; 12820253Sjoerg struct carg *a_uid; 12920253Sjoerg struct carg *arg; 13020253Sjoerg struct passwd *pwd = NULL; 13120253Sjoerg struct group *grp; 13220253Sjoerg struct stat st; 133284118Sbapt struct userconf *cnf; 13420747Sdavidn char line[_PASSWORD_LEN+1]; 135283961Sbapt char path[MAXPATHLEN]; 13682868Sdd FILE *fp; 137167919Sle char *dmode_c; 138167919Sle void *set = NULL; 13920253Sjoerg 14020253Sjoerg static struct passwd fakeuser = 14120253Sjoerg { 14220253Sjoerg NULL, 14320253Sjoerg "*", 14420253Sjoerg -1, 14520253Sjoerg -1, 14620253Sjoerg 0, 14720253Sjoerg "", 14820253Sjoerg "User &", 14956000Sdavidn "/nonexistent", 15020253Sjoerg "/bin/sh", 15120253Sjoerg 0 15256000Sdavidn#if defined(__FreeBSD__) 15356000Sdavidn ,0 15456000Sdavidn#endif 15520253Sjoerg }; 15620253Sjoerg 157284118Sbapt cnf = conf.userconf; 15852512Sdavidn 15920253Sjoerg /* 16020267Sjoerg * With M_NEXT, we only need to return the 16120267Sjoerg * next uid to stdout 16220267Sjoerg */ 16320267Sjoerg if (mode == M_NEXT) 16420267Sjoerg { 16520267Sjoerg uid_t next = pw_uidpolicy(cnf, args); 16620267Sjoerg if (getarg(args, 'q')) 16720267Sjoerg return next; 168283842Sbapt printf("%u:", next); 169284118Sbapt pw_group(mode, args); 17020267Sjoerg return EXIT_SUCCESS; 17120267Sjoerg } 17220267Sjoerg 17320267Sjoerg /* 17420253Sjoerg * We can do all of the common legwork here 17520253Sjoerg */ 17620253Sjoerg 17720253Sjoerg if ((arg = getarg(args, 'b')) != NULL) { 17820267Sjoerg cnf->home = arg->val; 17920253Sjoerg } 18021052Sdavidn 181167919Sle if ((arg = getarg(args, 'M')) != NULL) { 182167919Sle dmode_c = arg->val; 183167919Sle if ((set = setmode(dmode_c)) == NULL) 184167919Sle errx(EX_DATAERR, "invalid directory creation mode '%s'", 185167919Sle dmode_c); 186219408Sjkim cnf->homemode = getmode(set, _DEF_DIRMODE); 187167919Sle free(set); 188168044Sle } 189167919Sle 19021052Sdavidn /* 19121052Sdavidn * If we'll need to use it or we're updating it, 19221052Sdavidn * then create the base home directory if necessary 19321052Sdavidn */ 194224535Sdelphij if (arg != NULL || getarg(args, 'm') != NULL) { 19521052Sdavidn int l = strlen(cnf->home); 19621052Sdavidn 19721052Sdavidn if (l > 1 && cnf->home[l-1] == '/') /* Shave off any trailing path delimiter */ 19821052Sdavidn cnf->home[--l] = '\0'; 19921052Sdavidn 20021052Sdavidn if (l < 2 || *cnf->home != '/') /* Check for absolute path name */ 20130259Scharnier errx(EX_DATAERR, "invalid base directory for home '%s'", cnf->home); 20221052Sdavidn 20321052Sdavidn if (stat(cnf->home, &st) == -1) { 20421052Sdavidn char dbuf[MAXPATHLEN]; 20521052Sdavidn 20621242Sdavidn /* 20721242Sdavidn * This is a kludge especially for Joerg :) 20821242Sdavidn * If the home directory would be created in the root partition, then 20921242Sdavidn * we really create it under /usr which is likely to have more space. 21021242Sdavidn * But we create a symlink from cnf->home -> "/usr" -> cnf->home 21121242Sdavidn */ 21221242Sdavidn if (strchr(cnf->home+1, '/') == NULL) { 213282683Sbapt snprintf(dbuf, MAXPATHLEN, "/usr%s", cnf->home); 214219408Sjkim if (mkdir(dbuf, _DEF_DIRMODE) != -1 || errno == EEXIST) { 21521242Sdavidn chown(dbuf, 0, 0); 216148584Spjd /* 217148584Spjd * Skip first "/" and create symlink: 218148584Spjd * /home -> usr/home 219148584Spjd */ 220148584Spjd symlink(dbuf+1, cnf->home); 22121242Sdavidn } 22221242Sdavidn /* If this falls, fall back to old method */ 22321242Sdavidn } 224130633Srobert strlcpy(dbuf, cnf->home, sizeof(dbuf)); 225130633Srobert p = dbuf; 22621242Sdavidn if (stat(dbuf, &st) == -1) { 227252377Skientzle while ((p = strchr(p + 1, '/')) != NULL) { 22821242Sdavidn *p = '\0'; 22921242Sdavidn if (stat(dbuf, &st) == -1) { 230219408Sjkim if (mkdir(dbuf, _DEF_DIRMODE) == -1) 23121242Sdavidn goto direrr; 23221242Sdavidn chown(dbuf, 0, 0); 23321242Sdavidn } else if (!S_ISDIR(st.st_mode)) 23430259Scharnier errx(EX_OSFILE, "'%s' (root home parent) is not a directory", dbuf); 23521242Sdavidn *p = '/'; 23621242Sdavidn } 23721052Sdavidn } 23821242Sdavidn if (stat(dbuf, &st) == -1) { 239219408Sjkim if (mkdir(dbuf, _DEF_DIRMODE) == -1) { 24030259Scharnier direrr: err(EX_OSFILE, "mkdir '%s'", dbuf); 24121052Sdavidn } 24221052Sdavidn chown(dbuf, 0, 0); 24321052Sdavidn } 24421052Sdavidn } else if (!S_ISDIR(st.st_mode)) 24530259Scharnier errx(EX_OSFILE, "root home `%s' is not a directory", cnf->home); 24621052Sdavidn } 24721052Sdavidn 24820253Sjoerg if ((arg = getarg(args, 'e')) != NULL) 24920253Sjoerg cnf->expire_days = atoi(arg->val); 25020253Sjoerg 25121330Sdavidn if ((arg = getarg(args, 'y')) != NULL) 25221330Sdavidn cnf->nispasswd = arg->val; 25321330Sdavidn 25420253Sjoerg if ((arg = getarg(args, 'p')) != NULL && arg->val) 25520253Sjoerg cnf->password_days = atoi(arg->val); 25620253Sjoerg 25720253Sjoerg if ((arg = getarg(args, 'g')) != NULL) { 25863596Sdavidn if (!*(p = arg->val)) /* Handle empty group list specially */ 25963596Sdavidn cnf->default_group = ""; 26063596Sdavidn else { 26163596Sdavidn if ((grp = GETGRNAM(p)) == NULL) { 26263596Sdavidn if (!isdigit((unsigned char)*p) || (grp = GETGRGID((gid_t) atoi(p))) == NULL) 26363596Sdavidn errx(EX_NOUSER, "group `%s' does not exist", p); 26463596Sdavidn } 26563596Sdavidn cnf->default_group = newstr(grp->gr_name); 26620253Sjoerg } 26720253Sjoerg } 26820253Sjoerg if ((arg = getarg(args, 'L')) != NULL) 269284110Sbapt cnf->default_class = pw_checkname(arg->val, 0); 27020253Sjoerg 27120253Sjoerg if ((arg = getarg(args, 'G')) != NULL && arg->val) { 27252527Sdavidn int i = 0; 27320253Sjoerg 27420747Sdavidn for (p = strtok(arg->val, ", \t"); p != NULL; p = strtok(NULL, ", \t")) { 27544229Sdavidn if ((grp = GETGRNAM(p)) == NULL) { 27661957Sache if (!isdigit((unsigned char)*p) || (grp = GETGRGID((gid_t) atoi(p))) == NULL) 27730259Scharnier errx(EX_NOUSER, "group `%s' does not exist", p); 27820253Sjoerg } 27920747Sdavidn if (extendarray(&cnf->groups, &cnf->numgroups, i + 2) != -1) 28020747Sdavidn cnf->groups[i++] = newstr(grp->gr_name); 28120253Sjoerg } 28220747Sdavidn while (i < cnf->numgroups) 28320253Sjoerg cnf->groups[i++] = NULL; 28420253Sjoerg } 28552527Sdavidn 28620253Sjoerg if ((arg = getarg(args, 'k')) != NULL) { 28726088Sdavidn if (stat(cnf->dotdir = arg->val, &st) == -1 || !S_ISDIR(st.st_mode)) 28830259Scharnier errx(EX_OSFILE, "skeleton `%s' is not a directory or does not exist", cnf->dotdir); 28920253Sjoerg } 29052527Sdavidn 29120253Sjoerg if ((arg = getarg(args, 's')) != NULL) 29220253Sjoerg cnf->shell_default = arg->val; 29320253Sjoerg 29463600Sdavidn if ((arg = getarg(args, 'w')) != NULL) 29563600Sdavidn cnf->default_password = boolean_val(arg->val, cnf->default_password); 29620253Sjoerg if (mode == M_ADD && getarg(args, 'D')) { 29720253Sjoerg if (getarg(args, 'n') != NULL) 29830259Scharnier errx(EX_DATAERR, "can't combine `-D' with `-n name'"); 29920253Sjoerg if ((arg = getarg(args, 'u')) != NULL && (p = strtok(arg->val, ", \t")) != NULL) { 30020253Sjoerg if ((cnf->min_uid = (uid_t) atoi(p)) == 0) 30120253Sjoerg cnf->min_uid = 1000; 30220253Sjoerg if ((p = strtok(NULL, " ,\t")) == NULL || (cnf->max_uid = (uid_t) atoi(p)) < cnf->min_uid) 30320253Sjoerg cnf->max_uid = 32000; 30420253Sjoerg } 30520253Sjoerg if ((arg = getarg(args, 'i')) != NULL && (p = strtok(arg->val, ", \t")) != NULL) { 30620253Sjoerg if ((cnf->min_gid = (gid_t) atoi(p)) == 0) 30720253Sjoerg cnf->min_gid = 1000; 30820253Sjoerg if ((p = strtok(NULL, " ,\t")) == NULL || (cnf->max_gid = (gid_t) atoi(p)) < cnf->min_gid) 30920253Sjoerg cnf->max_gid = 32000; 31020253Sjoerg } 31120253Sjoerg 31220253Sjoerg arg = getarg(args, 'C'); 31320253Sjoerg if (write_userconfig(arg ? arg->val : NULL)) 31420267Sjoerg return EXIT_SUCCESS; 315283814Sbapt err(EX_IOERR, "config udpate"); 31620253Sjoerg } 31752527Sdavidn 31820253Sjoerg if (mode == M_PRINT && getarg(args, 'a')) { 31944229Sdavidn SETPWENT(); 32044229Sdavidn while ((pwd = GETPWENT()) != NULL) 321284124Sbapt print_user(pwd); 32244229Sdavidn ENDPWENT(); 32320267Sjoerg return EXIT_SUCCESS; 32420253Sjoerg } 32552527Sdavidn 32620253Sjoerg if ((a_name = getarg(args, 'n')) != NULL) 327284110Sbapt pwd = GETPWNAM(pw_checkname(a_name->val, 0)); 32820253Sjoerg a_uid = getarg(args, 'u'); 32920253Sjoerg 33020253Sjoerg if (a_uid == NULL) { 33120253Sjoerg if (a_name == NULL) 33230259Scharnier errx(EX_DATAERR, "user name or id required"); 33320253Sjoerg 33420253Sjoerg /* 33520253Sjoerg * Determine whether 'n' switch is name or uid - we don't 33620253Sjoerg * really don't really care which we have, but we need to 33720253Sjoerg * know. 33820253Sjoerg */ 33943780Sdes if (mode != M_ADD && pwd == NULL 340241108Sbapt && strspn(a_name->val, "0123456789") == strlen(a_name->val) 341241108Sbapt && *a_name->val) { 34220253Sjoerg (a_uid = a_name)->ch = 'u'; 34320253Sjoerg a_name = NULL; 34420253Sjoerg } 345273787Sbapt } else { 346277764Sbapt if (strspn(a_uid->val, "0123456789") != strlen(a_uid->val)) 347273787Sbapt errx(EX_USAGE, "-u expects a number"); 34820253Sjoerg } 34952527Sdavidn 35020253Sjoerg /* 35120253Sjoerg * Update, delete & print require that the user exists 35220253Sjoerg */ 35352512Sdavidn if (mode == M_UPDATE || mode == M_DELETE || 35452512Sdavidn mode == M_PRINT || mode == M_LOCK || mode == M_UNLOCK) { 35552527Sdavidn 35620253Sjoerg if (a_name == NULL && pwd == NULL) /* Try harder */ 35744229Sdavidn pwd = GETPWUID(atoi(a_uid->val)); 35820253Sjoerg 35920253Sjoerg if (pwd == NULL) { 36020253Sjoerg if (mode == M_PRINT && getarg(args, 'F')) { 36120253Sjoerg fakeuser.pw_name = a_name ? a_name->val : "nouser"; 362283841Sbapt fakeuser.pw_uid = a_uid ? (uid_t) atol(a_uid->val) : (uid_t) -1; 36344386Sdavidn return print_user(&fakeuser, 36444386Sdavidn getarg(args, '7') != NULL); 36520253Sjoerg } 36620253Sjoerg if (a_name == NULL) 36730259Scharnier errx(EX_NOUSER, "no such uid `%s'", a_uid->val); 36830259Scharnier errx(EX_NOUSER, "no such user `%s'", a_name->val); 36920253Sjoerg } 37052527Sdavidn 37120253Sjoerg if (a_name == NULL) /* May be needed later */ 37220253Sjoerg a_name = addarg(args, 'n', newstr(pwd->pw_name)); 37320253Sjoerg 37420253Sjoerg /* 37552512Sdavidn * The M_LOCK and M_UNLOCK functions simply add or remove 37652512Sdavidn * a "*LOCKED*" prefix from in front of the password to 37752512Sdavidn * prevent it decoding correctly, and therefore prevents 37852512Sdavidn * access. Of course, this only prevents access via 37952512Sdavidn * password authentication (not ssh, kerberos or any 38052512Sdavidn * other method that does not use the UNIX password) but 38152512Sdavidn * that is a known limitation. 38252512Sdavidn */ 38352512Sdavidn 38452512Sdavidn if (mode == M_LOCK) { 38552512Sdavidn if (strncmp(pwd->pw_passwd, locked_str, sizeof(locked_str)-1) == 0) 38652512Sdavidn errx(EX_DATAERR, "user '%s' is already locked", pwd->pw_name); 387282685Sbapt asprintf(&passtmp, "%s%s", locked_str, pwd->pw_passwd); 38852512Sdavidn if (passtmp == NULL) /* disaster */ 38952512Sdavidn errx(EX_UNAVAILABLE, "out of memory"); 39052512Sdavidn pwd->pw_passwd = passtmp; 39152527Sdavidn edited = 1; 39252512Sdavidn } else if (mode == M_UNLOCK) { 39352512Sdavidn if (strncmp(pwd->pw_passwd, locked_str, sizeof(locked_str)-1) != 0) 39452512Sdavidn errx(EX_DATAERR, "user '%s' is not locked", pwd->pw_name); 39552512Sdavidn pwd->pw_passwd += sizeof(locked_str)-1; 39652527Sdavidn edited = 1; 397284111Sbapt } else if (mode == M_DELETE) 398284111Sbapt return (delete_user(cnf, pwd, a_name, 399284111Sbapt getarg(args, 'r') != NULL, mode)); 400284111Sbapt else if (mode == M_PRINT) 401284122Sbapt return print_user(pwd, getarg(args, '7') != NULL); 40220253Sjoerg 40320253Sjoerg /* 40420253Sjoerg * The rest is edit code 40520253Sjoerg */ 40620253Sjoerg if ((arg = getarg(args, 'l')) != NULL) { 40720253Sjoerg if (strcmp(pwd->pw_name, "root") == 0) 40830259Scharnier errx(EX_DATAERR, "can't rename `root' account"); 409284110Sbapt pwd->pw_name = pw_checkname(arg->val, 0); 41052527Sdavidn edited = 1; 41120253Sjoerg } 41252527Sdavidn 41361957Sache if ((arg = getarg(args, 'u')) != NULL && isdigit((unsigned char)*arg->val)) { 41420253Sjoerg pwd->pw_uid = (uid_t) atol(arg->val); 41552527Sdavidn edited = 1; 41620253Sjoerg if (pwd->pw_uid != 0 && strcmp(pwd->pw_name, "root") == 0) 41730259Scharnier errx(EX_DATAERR, "can't change uid of `root' account"); 41820253Sjoerg if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0) 41930259Scharnier warnx("WARNING: account `%s' will have a uid of 0 (superuser access!)", pwd->pw_name); 42020253Sjoerg } 42120253Sjoerg 42252527Sdavidn if ((arg = getarg(args, 'g')) != NULL && pwd->pw_uid != 0) { /* Already checked this */ 42352527Sdavidn gid_t newgid = (gid_t) GETGRNAM(cnf->default_group)->gr_gid; 42452527Sdavidn if (newgid != pwd->pw_gid) { 42552527Sdavidn edited = 1; 42661762Sdavidn pwd->pw_gid = newgid; 42752527Sdavidn } 42852527Sdavidn } 42952527Sdavidn 43020253Sjoerg if ((arg = getarg(args, 'p')) != NULL) { 43152527Sdavidn if (*arg->val == '\0' || strcmp(arg->val, "0") == 0) { 43252527Sdavidn if (pwd->pw_change != 0) { 43352527Sdavidn pwd->pw_change = 0; 43452527Sdavidn edited = 1; 43552527Sdavidn } 43652527Sdavidn } 43720253Sjoerg else { 43820253Sjoerg time_t now = time(NULL); 43920253Sjoerg time_t expire = parse_date(now, arg->val); 44020253Sjoerg 44152527Sdavidn if (pwd->pw_change != expire) { 44252527Sdavidn pwd->pw_change = expire; 44352527Sdavidn edited = 1; 44452527Sdavidn } 44520253Sjoerg } 44620253Sjoerg } 44752527Sdavidn 44820267Sjoerg if ((arg = getarg(args, 'e')) != NULL) { 44952527Sdavidn if (*arg->val == '\0' || strcmp(arg->val, "0") == 0) { 45052527Sdavidn if (pwd->pw_expire != 0) { 45152527Sdavidn pwd->pw_expire = 0; 45252527Sdavidn edited = 1; 45352527Sdavidn } 45452527Sdavidn } 45520253Sjoerg else { 45620253Sjoerg time_t now = time(NULL); 45720253Sjoerg time_t expire = parse_date(now, arg->val); 45820253Sjoerg 45952527Sdavidn if (pwd->pw_expire != expire) { 46052527Sdavidn pwd->pw_expire = expire; 46152527Sdavidn edited = 1; 46252527Sdavidn } 46320253Sjoerg } 46420253Sjoerg } 46520253Sjoerg 46652527Sdavidn if ((arg = getarg(args, 's')) != NULL) { 46752527Sdavidn char *shell = shell_path(cnf->shelldir, cnf->shells, arg->val); 46852527Sdavidn if (shell == NULL) 46952527Sdavidn shell = ""; 47052527Sdavidn if (strcmp(shell, pwd->pw_shell) != 0) { 47152527Sdavidn pwd->pw_shell = shell; 47252527Sdavidn edited = 1; 47352527Sdavidn } 47452527Sdavidn } 47520253Sjoerg 47652527Sdavidn if (getarg(args, 'L')) { 47752527Sdavidn if (cnf->default_class == NULL) 47852527Sdavidn cnf->default_class = ""; 47952527Sdavidn if (strcmp(pwd->pw_class, cnf->default_class) != 0) { 48052527Sdavidn pwd->pw_class = cnf->default_class; 48152527Sdavidn edited = 1; 48252527Sdavidn } 48352527Sdavidn } 48452527Sdavidn 48520747Sdavidn if ((arg = getarg(args, 'd')) != NULL) { 486130629Srobert if (strcmp(pwd->pw_dir, arg->val)) 487130629Srobert edited = 1; 48820747Sdavidn if (stat(pwd->pw_dir = arg->val, &st) == -1) { 48920747Sdavidn if (getarg(args, 'm') == NULL && strcmp(pwd->pw_dir, "/nonexistent") != 0) 49030259Scharnier warnx("WARNING: home `%s' does not exist", pwd->pw_dir); 49120747Sdavidn } else if (!S_ISDIR(st.st_mode)) 49230259Scharnier warnx("WARNING: home `%s' is not a directory", pwd->pw_dir); 49320747Sdavidn } 49420747Sdavidn 495124382Siedowse if ((arg = getarg(args, 'w')) != NULL && 496124382Siedowse getarg(args, 'h') == NULL && getarg(args, 'H') == NULL) { 49764918Sgreen login_cap_t *lc; 49864918Sgreen 49964918Sgreen lc = login_getpwclass(pwd); 50064918Sgreen if (lc == NULL || 501252688Sdes login_setcryptfmt(lc, "sha512", NULL) == NULL) 50264918Sgreen warn("setting crypt(3) format"); 50364918Sgreen login_close(lc); 50420267Sjoerg pwd->pw_passwd = pw_password(cnf, args, pwd->pw_name); 50552527Sdavidn edited = 1; 50652527Sdavidn } 50720267Sjoerg 50820253Sjoerg } else { 50964918Sgreen login_cap_t *lc; 51052527Sdavidn 51152527Sdavidn /* 51252527Sdavidn * Add code 51352527Sdavidn */ 51452527Sdavidn 51520253Sjoerg if (a_name == NULL) /* Required */ 51630259Scharnier errx(EX_DATAERR, "login name required"); 51744229Sdavidn else if ((pwd = GETPWNAM(a_name->val)) != NULL) /* Exists */ 51830259Scharnier errx(EX_DATAERR, "login name `%s' already exists", a_name->val); 51920253Sjoerg 52020253Sjoerg /* 52120253Sjoerg * Now, set up defaults for a new user 52220253Sjoerg */ 52320253Sjoerg pwd = &fakeuser; 52420253Sjoerg pwd->pw_name = a_name->val; 52520253Sjoerg pwd->pw_class = cnf->default_class ? cnf->default_class : ""; 52620253Sjoerg pwd->pw_uid = pw_uidpolicy(cnf, args); 527284118Sbapt pwd->pw_gid = pw_gidpolicy(args, pwd->pw_name, (gid_t) pwd->pw_uid); 52820253Sjoerg pwd->pw_change = pw_pwdpolicy(cnf, args); 52920253Sjoerg pwd->pw_expire = pw_exppolicy(cnf, args); 53020253Sjoerg pwd->pw_dir = pw_homepolicy(cnf, args, pwd->pw_name); 53120253Sjoerg pwd->pw_shell = pw_shellpolicy(cnf, args, NULL); 53264918Sgreen lc = login_getpwclass(pwd); 533272833Sdes if (lc == NULL || login_setcryptfmt(lc, "sha512", NULL) == NULL) 53464918Sgreen warn("setting crypt(3) format"); 53564918Sgreen login_close(lc); 53664918Sgreen pwd->pw_passwd = pw_password(cnf, args, pwd->pw_name); 53752527Sdavidn edited = 1; 53820253Sjoerg 53920253Sjoerg if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0) 54030259Scharnier warnx("WARNING: new account `%s' has a uid of 0 (superuser access!)", pwd->pw_name); 54120253Sjoerg } 54220253Sjoerg 54320253Sjoerg /* 54420253Sjoerg * Shared add/edit code 54520253Sjoerg */ 54652527Sdavidn if ((arg = getarg(args, 'c')) != NULL) { 547284110Sbapt char *gecos = pw_checkname(arg->val, 1); 54852527Sdavidn if (strcmp(pwd->pw_gecos, gecos) != 0) { 54952527Sdavidn pwd->pw_gecos = gecos; 55052527Sdavidn edited = 1; 55152527Sdavidn } 55252527Sdavidn } 55320253Sjoerg 554124382Siedowse if ((arg = getarg(args, 'h')) != NULL || 555124382Siedowse (arg = getarg(args, 'H')) != NULL) { 55663572Sdavidn if (strcmp(arg->val, "-") == 0) { 55763572Sdavidn if (!pwd->pw_passwd || *pwd->pw_passwd != '*') { 55863572Sdavidn pwd->pw_passwd = "*"; /* No access */ 55963572Sdavidn edited = 1; 56063572Sdavidn } 56163572Sdavidn } else { 56220253Sjoerg int fd = atoi(arg->val); 563124382Siedowse int precrypt = (arg->ch == 'H'); 56420253Sjoerg int b; 56520253Sjoerg int istty = isatty(fd); 56620253Sjoerg struct termios t; 56764918Sgreen login_cap_t *lc; 56820253Sjoerg 56920253Sjoerg if (istty) { 57020253Sjoerg if (tcgetattr(fd, &t) == -1) 57120253Sjoerg istty = 0; 57220253Sjoerg else { 57320253Sjoerg struct termios n = t; 57420253Sjoerg 57520253Sjoerg /* Disable echo */ 57620253Sjoerg n.c_lflag &= ~(ECHO); 57720253Sjoerg tcsetattr(fd, TCSANOW, &n); 578124382Siedowse printf("%s%spassword for user %s:", 579124382Siedowse (mode == M_UPDATE) ? "new " : "", 580124382Siedowse precrypt ? "encrypted " : "", 581124382Siedowse pwd->pw_name); 58220253Sjoerg fflush(stdout); 58320253Sjoerg } 58420253Sjoerg } 58520253Sjoerg b = read(fd, line, sizeof(line) - 1); 58620253Sjoerg if (istty) { /* Restore state */ 58720253Sjoerg tcsetattr(fd, TCSANOW, &t); 58820253Sjoerg fputc('\n', stdout); 58920253Sjoerg fflush(stdout); 59020253Sjoerg } 591283814Sbapt if (b < 0) 592283814Sbapt err(EX_IOERR, "-%c file descriptor", 593283814Sbapt precrypt ? 'H' : 'h'); 59420253Sjoerg line[b] = '\0'; 595168045Sle if ((p = strpbrk(line, "\r\n")) != NULL) 59620253Sjoerg *p = '\0'; 59720253Sjoerg if (!*line) 59830259Scharnier errx(EX_DATAERR, "empty password read on file descriptor %d", fd); 599124382Siedowse if (precrypt) { 600124382Siedowse if (strchr(line, ':') != NULL) 601124382Siedowse return EX_DATAERR; 602124382Siedowse pwd->pw_passwd = line; 603124382Siedowse } else { 604124382Siedowse lc = login_getpwclass(pwd); 605124382Siedowse if (lc == NULL || 606272833Sdes login_setcryptfmt(lc, "sha512", NULL) == NULL) 607124382Siedowse warn("setting crypt(3) format"); 608124382Siedowse login_close(lc); 609124382Siedowse pwd->pw_passwd = pw_pwcrypt(line); 610124382Siedowse } 61152527Sdavidn edited = 1; 61220253Sjoerg } 61320253Sjoerg } 61420267Sjoerg 61520267Sjoerg /* 61620267Sjoerg * Special case: -N only displays & exits 61720267Sjoerg */ 618284121Sbapt if (conf.dryrun) 619284122Sbapt return print_user(pwd, getarg(args, '7') != NULL); 62020267Sjoerg 62121330Sdavidn if (mode == M_ADD) { 62252527Sdavidn edited = 1; /* Always */ 62352502Sdavidn rc = addpwent(pwd); 624283814Sbapt if (rc == -1) 625283814Sbapt errx(EX_IOERR, "user '%s' already exists", 626283814Sbapt pwd->pw_name); 627283814Sbapt else if (rc != 0) 628283814Sbapt err(EX_IOERR, "passwd file update"); 62952502Sdavidn if (cnf->nispasswd && *cnf->nispasswd=='/') { 63052502Sdavidn rc = addnispwent(cnf->nispasswd, pwd); 63152502Sdavidn if (rc == -1) 63252502Sdavidn warnx("User '%s' already exists in NIS passwd", pwd->pw_name); 63352502Sdavidn else 63456000Sdavidn warn("NIS passwd update"); 63552502Sdavidn /* NOTE: we treat NIS-only update errors as non-fatal */ 63652502Sdavidn } 63752512Sdavidn } else if (mode == M_UPDATE || mode == M_LOCK || mode == M_UNLOCK) { 63852527Sdavidn if (edited) { /* Only updated this if required */ 63952527Sdavidn rc = chgpwent(a_name->val, pwd); 640283814Sbapt if (rc == -1) 641283814Sbapt errx(EX_IOERR, "user '%s' does not exist (NIS?)", pwd->pw_name); 642283814Sbapt else if (rc != 0) 643283814Sbapt err(EX_IOERR, "passwd file update"); 64452527Sdavidn if ( cnf->nispasswd && *cnf->nispasswd=='/') { 64552527Sdavidn rc = chgnispwent(cnf->nispasswd, a_name->val, pwd); 64652527Sdavidn if (rc == -1) 64752527Sdavidn warn("User '%s' not found in NIS passwd", pwd->pw_name); 64852527Sdavidn else 64956000Sdavidn warn("NIS passwd update"); 65052527Sdavidn /* NOTE: NIS-only update errors are not fatal */ 65152527Sdavidn } 65252502Sdavidn } 65321330Sdavidn } 65421330Sdavidn 65520253Sjoerg /* 65620253Sjoerg * Ok, user is created or changed - now edit group file 65720253Sjoerg */ 65820253Sjoerg 659242349Sbapt if (mode == M_ADD || getarg(args, 'G') != NULL) { 660273779Sbapt int i, j; 661273779Sbapt /* First remove the user from all group */ 662273779Sbapt SETGRENT(); 663273779Sbapt while ((grp = GETGRENT()) != NULL) { 664273779Sbapt char group[MAXLOGNAME]; 665273779Sbapt if (grp->gr_mem == NULL) 666273779Sbapt continue; 667273779Sbapt for (i = 0; grp->gr_mem[i] != NULL; i++) { 668273779Sbapt if (strcmp(grp->gr_mem[i] , pwd->pw_name) != 0) 669273779Sbapt continue; 670273779Sbapt for (j = i; grp->gr_mem[j] != NULL ; j++) 671273779Sbapt grp->gr_mem[j] = grp->gr_mem[j+1]; 672273779Sbapt strlcpy(group, grp->gr_name, MAXLOGNAME); 673273779Sbapt chggrent(group, grp); 674273779Sbapt } 675273779Sbapt } 676273779Sbapt ENDGRENT(); 677273779Sbapt 678273779Sbapt /* now add to group where needed */ 679242349Sbapt for (i = 0; cnf->groups[i] != NULL; i++) { 680242349Sbapt grp = GETGRNAM(cnf->groups[i]); 681244737Sbapt grp = gr_add(grp, pwd->pw_name); 682244737Sbapt /* 683244737Sbapt * grp can only be NULL in 2 cases: 684244737Sbapt * - the new member is already a member 685244737Sbapt * - a problem with memory occurs 686244737Sbapt * in both cases we want to skip now. 687244737Sbapt */ 688244737Sbapt if (grp == NULL) 689242349Sbapt continue; 690242349Sbapt chggrent(cnf->groups[i], grp); 691245114Smjg free(grp); 692242349Sbapt } 693242349Sbapt } 694242349Sbapt 695242349Sbapt 69661759Sdavidn /* go get a current version of pwd */ 69761759Sdavidn pwd = GETPWNAM(a_name->val); 69861759Sdavidn if (pwd == NULL) { 69961759Sdavidn /* This will fail when we rename, so special case that */ 70061759Sdavidn if (mode == M_UPDATE && (arg = getarg(args, 'l')) != NULL) { 70161759Sdavidn a_name->val = arg->val; /* update new name */ 70261759Sdavidn pwd = GETPWNAM(a_name->val); /* refetch renamed rec */ 70361759Sdavidn } 70461759Sdavidn } 70561759Sdavidn if (pwd == NULL) /* can't go on without this */ 70630259Scharnier errx(EX_NOUSER, "user '%s' disappeared during update", a_name->val); 70720253Sjoerg 70844229Sdavidn grp = GETGRGID(pwd->pw_gid); 709283842Sbapt pw_log(cnf, mode, W_USER, "%s(%u):%s(%u):%s:%s:%s", 710283842Sbapt pwd->pw_name, pwd->pw_uid, 711283842Sbapt grp ? grp->gr_name : "unknown", (grp ? grp->gr_gid : (uid_t)-1), 71220253Sjoerg pwd->pw_gecos, pwd->pw_dir, pwd->pw_shell); 71320253Sjoerg 71420253Sjoerg /* 71520253Sjoerg * If adding, let's touch and chown the user's mail file. This is not 71620253Sjoerg * strictly necessary under BSD with a 0755 maildir but it also 71720253Sjoerg * doesn't hurt anything to create the empty mailfile 71820253Sjoerg */ 71920253Sjoerg if (mode == M_ADD) { 720283961Sbapt if (PWALTDIR() != PWF_ALT) { 721283961Sbapt arg = getarg(args, 'R'); 722283961Sbapt snprintf(path, sizeof(path), "%s%s/%s", 723283961Sbapt arg ? arg->val : "", _PATH_MAILDIR, pwd->pw_name); 724283961Sbapt close(open(path, O_RDWR | O_CREAT, 0600)); /* Preserve contents & 72544229Sdavidn * mtime */ 726283961Sbapt chown(path, pwd->pw_uid, pwd->pw_gid); 72720253Sjoerg } 72820253Sjoerg } 72952527Sdavidn 73020253Sjoerg /* 73182868Sdd * Let's create and populate the user's home directory. Note 73220253Sjoerg * that this also `works' for editing users if -m is used, but 73320253Sjoerg * existing files will *not* be overwritten. 73420253Sjoerg */ 735283961Sbapt if (PWALTDIR() != PWF_ALT && getarg(args, 'm') != NULL && pwd->pw_dir && 736283961Sbapt *pwd->pw_dir == '/' && pwd->pw_dir[1]) 737284118Sbapt create_and_populate_homedir(mode, pwd); 73852527Sdavidn 73982868Sdd /* 74082868Sdd * Finally, send mail to the new user as well, if we are asked to 74182868Sdd */ 74282868Sdd if (mode == M_ADD && !PWALTDIR() && cnf->newmail && *cnf->newmail && (fp = fopen(cnf->newmail, "r")) != NULL) { 74382868Sdd FILE *pfp = popen(_PATH_SENDMAIL " -t", "w"); 74482868Sdd 74582868Sdd if (pfp == NULL) 74682868Sdd warn("sendmail"); 74782868Sdd else { 74882868Sdd fprintf(pfp, "From: root\n" "To: %s\n" "Subject: Welcome!\n\n", pwd->pw_name); 74982868Sdd while (fgets(line, sizeof(line), fp) != NULL) { 75082868Sdd /* Do substitutions? */ 75182868Sdd fputs(line, pfp); 75282868Sdd } 75382868Sdd pclose(pfp); 754283842Sbapt pw_log(cnf, mode, W_USER, "%s(%u) new user mail sent", 755283842Sbapt pwd->pw_name, pwd->pw_uid); 75682868Sdd } 75782868Sdd fclose(fp); 75882868Sdd } 75982868Sdd 76020267Sjoerg return EXIT_SUCCESS; 76120253Sjoerg} 76220253Sjoerg 76320253Sjoerg 76420253Sjoergstatic uid_t 76520253Sjoergpw_uidpolicy(struct userconf * cnf, struct cargs * args) 76620253Sjoerg{ 76720253Sjoerg struct passwd *pwd; 76820253Sjoerg uid_t uid = (uid_t) - 1; 76920253Sjoerg struct carg *a_uid = getarg(args, 'u'); 77020253Sjoerg 77120253Sjoerg /* 77220253Sjoerg * Check the given uid, if any 77320253Sjoerg */ 77420253Sjoerg if (a_uid != NULL) { 77520253Sjoerg uid = (uid_t) atol(a_uid->val); 77620253Sjoerg 77744229Sdavidn if ((pwd = GETPWUID(uid)) != NULL && getarg(args, 'o') == NULL) 778283842Sbapt errx(EX_DATAERR, "uid `%u' has already been allocated", pwd->pw_uid); 77920253Sjoerg } else { 78020253Sjoerg struct bitmap bm; 78120253Sjoerg 78220253Sjoerg /* 78320253Sjoerg * We need to allocate the next available uid under one of 78420253Sjoerg * two policies a) Grab the first unused uid b) Grab the 78520253Sjoerg * highest possible unused uid 78620253Sjoerg */ 78720253Sjoerg if (cnf->min_uid >= cnf->max_uid) { /* Sanity 78820253Sjoerg * claus^H^H^H^Hheck */ 78920253Sjoerg cnf->min_uid = 1000; 79020253Sjoerg cnf->max_uid = 32000; 79120253Sjoerg } 79220253Sjoerg bm = bm_alloc(cnf->max_uid - cnf->min_uid + 1); 79320253Sjoerg 79420253Sjoerg /* 79520253Sjoerg * Now, let's fill the bitmap from the password file 79620253Sjoerg */ 79744229Sdavidn SETPWENT(); 79844229Sdavidn while ((pwd = GETPWENT()) != NULL) 79944229Sdavidn if (pwd->pw_uid >= (uid_t) cnf->min_uid && pwd->pw_uid <= (uid_t) cnf->max_uid) 80020253Sjoerg bm_setbit(&bm, pwd->pw_uid - cnf->min_uid); 80144229Sdavidn ENDPWENT(); 80220253Sjoerg 80320253Sjoerg /* 80420253Sjoerg * Then apply the policy, with fallback to reuse if necessary 80520253Sjoerg */ 80620253Sjoerg if (cnf->reuse_uids || (uid = (uid_t) (bm_lastset(&bm) + cnf->min_uid + 1)) > cnf->max_uid) 80720253Sjoerg uid = (uid_t) (bm_firstunset(&bm) + cnf->min_uid); 80820253Sjoerg 80920253Sjoerg /* 81020253Sjoerg * Another sanity check 81120253Sjoerg */ 81220253Sjoerg if (uid < cnf->min_uid || uid > cnf->max_uid) 81330259Scharnier errx(EX_SOFTWARE, "unable to allocate a new uid - range fully used"); 81420253Sjoerg bm_dealloc(&bm); 81520253Sjoerg } 81620253Sjoerg return uid; 81720253Sjoerg} 81820253Sjoerg 81920253Sjoerg 82020253Sjoergstatic uid_t 821284118Sbaptpw_gidpolicy(struct cargs * args, char *nam, gid_t prefer) 82220253Sjoerg{ 82320253Sjoerg struct group *grp; 82420253Sjoerg gid_t gid = (uid_t) - 1; 82520253Sjoerg struct carg *a_gid = getarg(args, 'g'); 826284118Sbapt struct userconf *cnf = conf.userconf; 82720253Sjoerg 82820253Sjoerg /* 82920253Sjoerg * If no arg given, see if default can help out 83020253Sjoerg */ 83120253Sjoerg if (a_gid == NULL && cnf->default_group && *cnf->default_group) 83220253Sjoerg a_gid = addarg(args, 'g', cnf->default_group); 83320253Sjoerg 83420253Sjoerg /* 83520253Sjoerg * Check the given gid, if any 83620253Sjoerg */ 83744229Sdavidn SETGRENT(); 83820253Sjoerg if (a_gid != NULL) { 83944229Sdavidn if ((grp = GETGRNAM(a_gid->val)) == NULL) { 84020253Sjoerg gid = (gid_t) atol(a_gid->val); 84161957Sache if ((gid == 0 && !isdigit((unsigned char)*a_gid->val)) || (grp = GETGRGID(gid)) == NULL) 84230259Scharnier errx(EX_NOUSER, "group `%s' is not defined", a_gid->val); 84320253Sjoerg } 84420253Sjoerg gid = grp->gr_gid; 845262865Sjulian } else if ((grp = GETGRNAM(nam)) != NULL && 846262865Sjulian (grp->gr_mem == NULL || grp->gr_mem[0] == NULL)) { 84720267Sjoerg gid = grp->gr_gid; /* Already created? Use it anyway... */ 84820253Sjoerg } else { 84920253Sjoerg struct cargs grpargs; 85020253Sjoerg char tmp[32]; 85120253Sjoerg 85220253Sjoerg LIST_INIT(&grpargs); 85320253Sjoerg addarg(&grpargs, 'n', nam); 85420253Sjoerg 85520253Sjoerg /* 85620253Sjoerg * We need to auto-create a group with the user's name. We 85720253Sjoerg * can send all the appropriate output to our sister routine 85820253Sjoerg * bit first see if we can create a group with gid==uid so we 85920253Sjoerg * can keep the user and group ids in sync. We purposely do 86020253Sjoerg * NOT check the gid range if we can force the sync. If the 86120253Sjoerg * user's name dups an existing group, then the group add 86220253Sjoerg * function will happily handle that case for us and exit. 86320253Sjoerg */ 86444229Sdavidn if (GETGRGID(prefer) == NULL) { 865282700Sbapt snprintf(tmp, sizeof(tmp), "%u", prefer); 86620253Sjoerg addarg(&grpargs, 'g', tmp); 86720253Sjoerg } 868284121Sbapt if (conf.dryrun) { 86920267Sjoerg addarg(&grpargs, 'q', NULL); 870284118Sbapt gid = pw_group(M_NEXT, &grpargs); 87120267Sjoerg } 87220267Sjoerg else 87320267Sjoerg { 874284118Sbapt pw_group(M_ADD, &grpargs); 87544229Sdavidn if ((grp = GETGRNAM(nam)) != NULL) 87620267Sjoerg gid = grp->gr_gid; 87720267Sjoerg } 87870486Sben a_gid = LIST_FIRST(&grpargs); 87920253Sjoerg while (a_gid != NULL) { 88070486Sben struct carg *t = LIST_NEXT(a_gid, list); 88120253Sjoerg LIST_REMOVE(a_gid, list); 88220253Sjoerg a_gid = t; 88320253Sjoerg } 88420253Sjoerg } 88544229Sdavidn ENDGRENT(); 88620253Sjoerg return gid; 88720253Sjoerg} 88820253Sjoerg 88920253Sjoerg 89020253Sjoergstatic time_t 89120253Sjoergpw_pwdpolicy(struct userconf * cnf, struct cargs * args) 89220253Sjoerg{ 89320253Sjoerg time_t result = 0; 89420253Sjoerg time_t now = time(NULL); 89527831Sdavidn struct carg *arg = getarg(args, 'p'); 89620253Sjoerg 89720253Sjoerg if (arg != NULL) { 89820253Sjoerg if ((result = parse_date(now, arg->val)) == now) 89930259Scharnier errx(EX_DATAERR, "invalid date/time `%s'", arg->val); 90020253Sjoerg } else if (cnf->password_days > 0) 90120253Sjoerg result = now + ((long) cnf->password_days * 86400L); 90220253Sjoerg return result; 90320253Sjoerg} 90420253Sjoerg 90520253Sjoerg 90620253Sjoergstatic time_t 90720253Sjoergpw_exppolicy(struct userconf * cnf, struct cargs * args) 90820253Sjoerg{ 90920253Sjoerg time_t result = 0; 91020253Sjoerg time_t now = time(NULL); 91120253Sjoerg struct carg *arg = getarg(args, 'e'); 91220253Sjoerg 91320253Sjoerg if (arg != NULL) { 91420253Sjoerg if ((result = parse_date(now, arg->val)) == now) 91530259Scharnier errx(EX_DATAERR, "invalid date/time `%s'", arg->val); 91620253Sjoerg } else if (cnf->expire_days > 0) 91720253Sjoerg result = now + ((long) cnf->expire_days * 86400L); 91820253Sjoerg return result; 91920253Sjoerg} 92020253Sjoerg 92120253Sjoerg 92220253Sjoergstatic char * 92320253Sjoergpw_homepolicy(struct userconf * cnf, struct cargs * args, char const * user) 92420253Sjoerg{ 92520253Sjoerg struct carg *arg = getarg(args, 'd'); 926282699Sbapt static char home[128]; 92720253Sjoerg 92820253Sjoerg if (arg) 929282699Sbapt return (arg->val); 93020253Sjoerg 931282699Sbapt if (cnf->home == NULL || *cnf->home == '\0') 932282699Sbapt errx(EX_CONFIG, "no base home directory set"); 933282699Sbapt snprintf(home, sizeof(home), "%s/%s", cnf->home, user); 934282699Sbapt 935282699Sbapt return (home); 93620253Sjoerg} 93720253Sjoerg 93820253Sjoergstatic char * 93920253Sjoergshell_path(char const * path, char *shells[], char *sh) 94020253Sjoerg{ 94120253Sjoerg if (sh != NULL && (*sh == '/' || *sh == '\0')) 94220253Sjoerg return sh; /* specified full path or forced none */ 94320253Sjoerg else { 94420253Sjoerg char *p; 94520253Sjoerg char paths[_UC_MAXLINE]; 94620253Sjoerg 94720253Sjoerg /* 94820253Sjoerg * We need to search paths 94920253Sjoerg */ 950130633Srobert strlcpy(paths, path, sizeof(paths)); 95120253Sjoerg for (p = strtok(paths, ": \t\r\n"); p != NULL; p = strtok(NULL, ": \t\r\n")) { 95220253Sjoerg int i; 95320253Sjoerg static char shellpath[256]; 95420253Sjoerg 95520253Sjoerg if (sh != NULL) { 956282700Sbapt snprintf(shellpath, sizeof(shellpath), "%s/%s", p, sh); 95720253Sjoerg if (access(shellpath, X_OK) == 0) 95820253Sjoerg return shellpath; 95920253Sjoerg } else 96020253Sjoerg for (i = 0; i < _UC_MAXSHELLS && shells[i] != NULL; i++) { 961282700Sbapt snprintf(shellpath, sizeof(shellpath), "%s/%s", p, shells[i]); 96220253Sjoerg if (access(shellpath, X_OK) == 0) 96320253Sjoerg return shellpath; 96420253Sjoerg } 96520253Sjoerg } 96620253Sjoerg if (sh == NULL) 96730259Scharnier errx(EX_OSFILE, "can't find shell `%s' in shell paths", sh); 96830259Scharnier errx(EX_CONFIG, "no default shell available or defined"); 96920253Sjoerg return NULL; 97020253Sjoerg } 97120253Sjoerg} 97220253Sjoerg 97320253Sjoerg 97420253Sjoergstatic char * 97520253Sjoergpw_shellpolicy(struct userconf * cnf, struct cargs * args, char *newshell) 97620253Sjoerg{ 97720253Sjoerg char *sh = newshell; 97820253Sjoerg struct carg *arg = getarg(args, 's'); 97920253Sjoerg 98020253Sjoerg if (newshell == NULL && arg != NULL) 98120253Sjoerg sh = arg->val; 98220253Sjoerg return shell_path(cnf->shelldir, cnf->shells, sh ? sh : cnf->shell_default); 98320253Sjoerg} 98420253Sjoerg 985179365Santoine#define SALTSIZE 32 98620253Sjoerg 987179365Santoinestatic char const chars[] = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ./"; 988179365Santoine 98920253Sjoergchar * 99020253Sjoergpw_pwcrypt(char *password) 99120253Sjoerg{ 99220253Sjoerg int i; 993179365Santoine char salt[SALTSIZE + 1]; 994231994Skevlo char *cryptpw; 99520253Sjoerg 99620253Sjoerg static char buf[256]; 99720253Sjoerg 99820253Sjoerg /* 99920253Sjoerg * Calculate a salt value 100020253Sjoerg */ 1001179365Santoine for (i = 0; i < SALTSIZE; i++) 1002181785Sache salt[i] = chars[arc4random_uniform(sizeof(chars) - 1)]; 1003179365Santoine salt[SALTSIZE] = '\0'; 100420253Sjoerg 1005231994Skevlo cryptpw = crypt(password, salt); 1006231994Skevlo if (cryptpw == NULL) 1007231994Skevlo errx(EX_CONFIG, "crypt(3) failure"); 1008231994Skevlo return strcpy(buf, cryptpw); 100920253Sjoerg} 101020253Sjoerg 101120590Sdavidn 101220253Sjoergstatic char * 101320253Sjoergpw_password(struct userconf * cnf, struct cargs * args, char const * user) 101420253Sjoerg{ 101520253Sjoerg int i, l; 101620253Sjoerg char pwbuf[32]; 101720253Sjoerg 101820253Sjoerg switch (cnf->default_password) { 101920253Sjoerg case -1: /* Random password */ 102073563Skris l = (arc4random() % 8 + 8); /* 8 - 16 chars */ 102120253Sjoerg for (i = 0; i < l; i++) 1022181785Sache pwbuf[i] = chars[arc4random_uniform(sizeof(chars)-1)]; 102320253Sjoerg pwbuf[i] = '\0'; 102420253Sjoerg 102520253Sjoerg /* 102620253Sjoerg * We give this information back to the user 102720253Sjoerg */ 1028124382Siedowse if (getarg(args, 'h') == NULL && getarg(args, 'H') == NULL && 1029284121Sbapt !conf.dryrun) { 103061957Sache if (isatty(STDOUT_FILENO)) 103120712Sdavidn printf("Password for '%s' is: ", user); 103220253Sjoerg printf("%s\n", pwbuf); 103320253Sjoerg fflush(stdout); 103420253Sjoerg } 103520253Sjoerg break; 103620253Sjoerg 103720253Sjoerg case -2: /* No password at all! */ 103820253Sjoerg return ""; 103920253Sjoerg 104020253Sjoerg case 0: /* No login - default */ 104120253Sjoerg default: 104220253Sjoerg return "*"; 104320253Sjoerg 104420253Sjoerg case 1: /* user's name */ 1045130633Srobert strlcpy(pwbuf, user, sizeof(pwbuf)); 104620253Sjoerg break; 104720253Sjoerg } 104820253Sjoerg return pw_pwcrypt(pwbuf); 104920253Sjoerg} 105020253Sjoerg 1051284111Sbaptstatic int 1052284111Sbaptdelete_user(struct userconf *cnf, struct passwd *pwd, struct carg *a_name, 1053284111Sbapt int delete, int mode) 1054284111Sbapt{ 1055284111Sbapt char file[MAXPATHLEN]; 1056284111Sbapt char home[MAXPATHLEN]; 1057284111Sbapt uid_t uid = pwd->pw_uid; 1058284111Sbapt struct group *gr, *grp; 1059284111Sbapt char grname[LOGNAMESIZE]; 1060284111Sbapt int rc; 1061284111Sbapt struct stat st; 106220253Sjoerg 1063284111Sbapt if (strcmp(pwd->pw_name, "root") == 0) 1064284111Sbapt errx(EX_DATAERR, "cannot remove user 'root'"); 1065284111Sbapt 1066284111Sbapt if (!PWALTDIR()) { 1067284111Sbapt /* 1068284111Sbapt * Remove opie record from /etc/opiekeys 1069284111Sbapt */ 1070284111Sbapt 1071284111Sbapt rmopie(pwd->pw_name); 1072284111Sbapt 1073284111Sbapt /* 1074284111Sbapt * Remove crontabs 1075284111Sbapt */ 1076284111Sbapt snprintf(file, sizeof(file), "/var/cron/tabs/%s", pwd->pw_name); 1077284111Sbapt if (access(file, F_OK) == 0) { 1078284111Sbapt snprintf(file, sizeof(file), "crontab -u %s -r", pwd->pw_name); 1079284111Sbapt system(file); 1080284111Sbapt } 1081284111Sbapt } 1082284111Sbapt /* 1083284111Sbapt * Save these for later, since contents of pwd may be 1084284111Sbapt * invalidated by deletion 1085284111Sbapt */ 1086284111Sbapt snprintf(file, sizeof(file), "%s/%s", _PATH_MAILDIR, pwd->pw_name); 1087284111Sbapt strlcpy(home, pwd->pw_dir, sizeof(home)); 1088284111Sbapt gr = GETGRGID(pwd->pw_gid); 1089284111Sbapt if (gr != NULL) 1090284111Sbapt strlcpy(grname, gr->gr_name, LOGNAMESIZE); 1091284111Sbapt else 1092284111Sbapt grname[0] = '\0'; 1093284111Sbapt 1094284111Sbapt rc = delpwent(pwd); 1095284111Sbapt if (rc == -1) 1096284111Sbapt err(EX_IOERR, "user '%s' does not exist", pwd->pw_name); 1097284111Sbapt else if (rc != 0) 1098284111Sbapt err(EX_IOERR, "passwd update"); 1099284111Sbapt 1100284111Sbapt if (cnf->nispasswd && *cnf->nispasswd=='/') { 1101284111Sbapt rc = delnispwent(cnf->nispasswd, a_name->val); 1102284111Sbapt if (rc == -1) 1103284111Sbapt warnx("WARNING: user '%s' does not exist in NIS passwd", pwd->pw_name); 1104284111Sbapt else if (rc != 0) 1105284111Sbapt warn("WARNING: NIS passwd update"); 1106284111Sbapt /* non-fatal */ 1107284111Sbapt } 1108284111Sbapt 1109284111Sbapt grp = GETGRNAM(a_name->val); 1110284111Sbapt if (grp != NULL && 1111284111Sbapt (grp->gr_mem == NULL || *grp->gr_mem == NULL) && 1112284111Sbapt strcmp(a_name->val, grname) == 0) 1113284111Sbapt delgrent(GETGRNAM(a_name->val)); 1114284111Sbapt SETGRENT(); 1115284111Sbapt while ((grp = GETGRENT()) != NULL) { 1116284111Sbapt int i, j; 1117284111Sbapt char group[MAXLOGNAME]; 1118284113Sbapt if (grp->gr_mem == NULL) 1119284113Sbapt continue; 1120284113Sbapt 1121284113Sbapt for (i = 0; grp->gr_mem[i] != NULL; i++) { 1122284114Sbapt if (strcmp(grp->gr_mem[i], a_name->val) != 0) 1123284113Sbapt continue; 1124284113Sbapt 1125284113Sbapt for (j = i; grp->gr_mem[j] != NULL; j++) 1126284113Sbapt grp->gr_mem[j] = grp->gr_mem[j+1]; 1127284113Sbapt strlcpy(group, grp->gr_name, MAXLOGNAME); 1128284113Sbapt chggrent(group, grp); 1129284111Sbapt } 1130284111Sbapt } 1131284111Sbapt ENDGRENT(); 1132284111Sbapt 1133284111Sbapt pw_log(cnf, mode, W_USER, "%s(%u) account removed", a_name->val, uid); 1134284111Sbapt 1135284117Sbapt if (!PWALTDIR()) { 1136284111Sbapt /* 1137284111Sbapt * Remove mail file 1138284111Sbapt */ 1139284111Sbapt remove(file); 1140284111Sbapt 1141284111Sbapt /* 1142284111Sbapt * Remove at jobs 1143284111Sbapt */ 1144284111Sbapt if (getpwuid(uid) == NULL) 1145284111Sbapt rmat(uid); 1146284111Sbapt 1147284111Sbapt /* 1148284111Sbapt * Remove home directory and contents 1149284111Sbapt */ 1150284112Sbapt if (delete && *home == '/' && getpwuid(uid) == NULL && 1151284112Sbapt stat(home, &st) != -1) { 1152284112Sbapt rm_r(home, uid); 1153284112Sbapt pw_log(cnf, mode, W_USER, "%s(%u) home '%s' %sremoved", 1154284112Sbapt a_name->val, uid, home, 1155284112Sbapt stat(home, &st) == -1 ? "" : "not completely "); 1156284111Sbapt } 1157284111Sbapt } 1158284111Sbapt 1159284111Sbapt return (EXIT_SUCCESS); 1160284111Sbapt} 1161284111Sbapt 116220253Sjoergstatic int 1163284124Sbaptprint_user(struct passwd * pwd) 116420253Sjoerg{ 1165284122Sbapt if (!conf.pretty) { 1166242349Sbapt char *buf; 116720253Sjoerg 1168284124Sbapt if (!conf.v7) 1169242349Sbapt pwd->pw_passwd = (pwd->pw_passwd == NULL) ? "" : "*"; 1170242349Sbapt 1171284124Sbapt buf = conf.v7 ? pw_make_v7(pwd) : pw_make(pwd); 1172242349Sbapt printf("%s\n", buf); 1173242349Sbapt free(buf); 117420253Sjoerg } else { 117520267Sjoerg int j; 117620253Sjoerg char *p; 117744229Sdavidn struct group *grp = GETGRGID(pwd->pw_gid); 117820253Sjoerg char uname[60] = "User &", office[60] = "[None]", 117920253Sjoerg wphone[60] = "[None]", hphone[60] = "[None]"; 118020590Sdavidn char acexpire[32] = "[None]", pwexpire[32] = "[None]"; 118120590Sdavidn struct tm * tptr; 118220253Sjoerg 118320253Sjoerg if ((p = strtok(pwd->pw_gecos, ",")) != NULL) { 1184130633Srobert strlcpy(uname, p, sizeof(uname)); 118520253Sjoerg if ((p = strtok(NULL, ",")) != NULL) { 1186130633Srobert strlcpy(office, p, sizeof(office)); 118720253Sjoerg if ((p = strtok(NULL, ",")) != NULL) { 1188130633Srobert strlcpy(wphone, p, sizeof(wphone)); 118920253Sjoerg if ((p = strtok(NULL, "")) != NULL) { 1190130633Srobert strlcpy(hphone, p, 1191130633Srobert sizeof(hphone)); 119220253Sjoerg } 119320253Sjoerg } 119420253Sjoerg } 119520253Sjoerg } 119620253Sjoerg /* 119720253Sjoerg * Handle '&' in gecos field 119820253Sjoerg */ 119920253Sjoerg if ((p = strchr(uname, '&')) != NULL) { 120020253Sjoerg int l = strlen(pwd->pw_name); 120120253Sjoerg int m = strlen(p); 120220253Sjoerg 120320253Sjoerg memmove(p + l, p + 1, m); 120420253Sjoerg memmove(p, pwd->pw_name, l); 120561957Sache *p = (char) toupper((unsigned char)*p); 120620253Sjoerg } 120720590Sdavidn if (pwd->pw_expire > (time_t)0 && (tptr = localtime(&pwd->pw_expire)) != NULL) 120874569Sache strftime(acexpire, sizeof acexpire, "%c", tptr); 120961957Sache if (pwd->pw_change > (time_t)0 && (tptr = localtime(&pwd->pw_change)) != NULL) 121074569Sache strftime(pwexpire, sizeof pwexpire, "%c", tptr); 1211283842Sbapt printf("Login Name: %-15s #%-12u Group: %-15s #%u\n" 121220747Sdavidn " Full Name: %s\n" 121320747Sdavidn " Home: %-26.26s Class: %s\n" 121420747Sdavidn " Shell: %-26.26s Office: %s\n" 121520747Sdavidn "Work Phone: %-26.26s Home Phone: %s\n" 121620747Sdavidn "Acc Expire: %-26.26s Pwd Expire: %s\n", 1217283842Sbapt pwd->pw_name, pwd->pw_uid, 1218283842Sbapt grp ? grp->gr_name : "(invalid)", pwd->pw_gid, 121920253Sjoerg uname, pwd->pw_dir, pwd->pw_class, 122020590Sdavidn pwd->pw_shell, office, wphone, hphone, 122120590Sdavidn acexpire, pwexpire); 122244229Sdavidn SETGRENT(); 122320267Sjoerg j = 0; 122444229Sdavidn while ((grp=GETGRENT()) != NULL) 122520267Sjoerg { 122620267Sjoerg int i = 0; 1227262865Sjulian if (grp->gr_mem != NULL) { 1228262865Sjulian while (grp->gr_mem[i] != NULL) 122920267Sjoerg { 1230262865Sjulian if (strcmp(grp->gr_mem[i], pwd->pw_name)==0) 1231262865Sjulian { 1232262865Sjulian printf(j++ == 0 ? " Groups: %s" : ",%s", grp->gr_name); 1233262865Sjulian break; 1234262865Sjulian } 1235262865Sjulian ++i; 123620267Sjoerg } 123720267Sjoerg } 123820267Sjoerg } 123944229Sdavidn ENDGRENT(); 124061957Sache printf("%s", j ? "\n" : ""); 124120253Sjoerg } 124220267Sjoerg return EXIT_SUCCESS; 124320253Sjoerg} 124420253Sjoerg 1245284110Sbaptchar * 1246284110Sbaptpw_checkname(char *name, int gecos) 124720253Sjoerg{ 1248109961Sgad char showch[8]; 1249284110Sbapt const char *badchars, *ch, *showtype; 1250109961Sgad int reject; 125120253Sjoerg 1252109961Sgad ch = name; 1253109961Sgad reject = 0; 1254109961Sgad if (gecos) { 1255109961Sgad /* See if the name is valid as a gecos (comment) field. */ 1256109961Sgad badchars = ":!@"; 1257109961Sgad showtype = "gecos field"; 1258109961Sgad } else { 1259109961Sgad /* See if the name is valid as a userid or group. */ 1260109961Sgad badchars = " ,\t:+&#%$^()!@~*?<>=|\\/\""; 1261109961Sgad showtype = "userid/group name"; 1262109961Sgad /* Userids and groups can not have a leading '-'. */ 1263109961Sgad if (*ch == '-') 1264109961Sgad reject = 1; 126520253Sjoerg } 1266109961Sgad if (!reject) { 1267109961Sgad while (*ch) { 1268109961Sgad if (strchr(badchars, *ch) != NULL || *ch < ' ' || 1269109961Sgad *ch == 127) { 1270109961Sgad reject = 1; 1271109961Sgad break; 1272109961Sgad } 1273109961Sgad /* 8-bit characters are only allowed in GECOS fields */ 1274109961Sgad if (!gecos && (*ch & 0x80)) { 1275109961Sgad reject = 1; 1276109961Sgad break; 1277109961Sgad } 1278109961Sgad ch++; 1279109961Sgad } 1280109961Sgad } 1281109961Sgad /* 1282109961Sgad * A `$' is allowed as the final character for userids and groups, 1283109961Sgad * mainly for the benefit of samba. 1284109961Sgad */ 1285109961Sgad if (reject && !gecos) { 1286109961Sgad if (*ch == '$' && *(ch + 1) == '\0') { 1287109961Sgad reject = 0; 1288109961Sgad ch++; 1289109961Sgad } 1290109961Sgad } 1291109961Sgad if (reject) { 1292109961Sgad snprintf(showch, sizeof(showch), (*ch >= ' ' && *ch < 127) 1293109961Sgad ? "`%c'" : "0x%02x", *ch); 1294228673Sdim errx(EX_DATAERR, "invalid character %s at position %td in %s", 1295109961Sgad showch, (ch - name), showtype); 1296109961Sgad } 1297109961Sgad if (!gecos && (ch - name) > LOGNAMESIZE) 1298109961Sgad errx(EX_DATAERR, "name too long `%s' (max is %d)", name, 1299109961Sgad LOGNAMESIZE); 1300284110Sbapt 1301284110Sbapt return (name); 130220253Sjoerg} 130320253Sjoerg 130420253Sjoerg 130520253Sjoergstatic void 130620253Sjoergrmat(uid_t uid) 130720253Sjoerg{ 130820253Sjoerg DIR *d = opendir("/var/at/jobs"); 130920253Sjoerg 131020253Sjoerg if (d != NULL) { 131120253Sjoerg struct dirent *e; 131220253Sjoerg 131320253Sjoerg while ((e = readdir(d)) != NULL) { 131420253Sjoerg struct stat st; 131520253Sjoerg 131620253Sjoerg if (strncmp(e->d_name, ".lock", 5) != 0 && 131720253Sjoerg stat(e->d_name, &st) == 0 && 131820253Sjoerg !S_ISDIR(st.st_mode) && 131920253Sjoerg st.st_uid == uid) { 132020253Sjoerg char tmp[MAXPATHLEN]; 132120253Sjoerg 1322282700Sbapt snprintf(tmp, sizeof(tmp), "/usr/bin/atrm %s", e->d_name); 132320253Sjoerg system(tmp); 132420253Sjoerg } 132520253Sjoerg } 132620253Sjoerg closedir(d); 132720253Sjoerg } 132820253Sjoerg} 132920747Sdavidn 133020747Sdavidnstatic void 133185145Sachermopie(char const * name) 133220747Sdavidn{ 133385145Sache static const char etcopie[] = "/etc/opiekeys"; 133485145Sache FILE *fp = fopen(etcopie, "r+"); 133520747Sdavidn 133621052Sdavidn if (fp != NULL) { 133721052Sdavidn char tmp[1024]; 133821052Sdavidn off_t atofs = 0; 133921052Sdavidn int length = strlen(name); 134020747Sdavidn 134121052Sdavidn while (fgets(tmp, sizeof tmp, fp) != NULL) { 134221052Sdavidn if (strncmp(name, tmp, length) == 0 && tmp[length]==' ') { 134321052Sdavidn if (fseek(fp, atofs, SEEK_SET) == 0) { 134421052Sdavidn fwrite("#", 1, 1, fp); /* Comment username out */ 134521052Sdavidn } 134621052Sdavidn break; 134720747Sdavidn } 134821052Sdavidn atofs = ftell(fp); 134920747Sdavidn } 135021052Sdavidn /* 135121052Sdavidn * If we got an error of any sort, don't update! 135221052Sdavidn */ 135321052Sdavidn fclose(fp); 135420747Sdavidn } 135520747Sdavidn} 135620747Sdavidn 1357