pw_user.c revision 284111
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 284111 2015-06-07 11:26:28Z 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); 5644386Sdavidnstatic int print_user(struct passwd * pwd, int pretty, int v7); 5720253Sjoergstatic uid_t pw_uidpolicy(struct userconf * cnf, struct cargs * args); 5820253Sjoergstatic uid_t pw_gidpolicy(struct userconf * cnf, 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 69283961Sbaptcreate_and_populate_homedir(int mode, struct cargs *args, struct passwd *pwd, 70283961Sbapt struct userconf *cnf) 71283961Sbapt{ 72283961Sbapt char *homedir, *dotdir; 73283961Sbapt struct carg *arg; 74283961Sbapt 75283961Sbapt homedir = dotdir = NULL; 76283961Sbapt 77283961Sbapt if ((arg = getarg(args, 'R'))) { 78283961Sbapt asprintf(&homedir, "%s/%s", arg->val, pwd->pw_dir); 79283961Sbapt if (homedir == NULL) 80283961Sbapt errx(EX_OSERR, "out of memory"); 81283961Sbapt asprintf(&dotdir, "%s/%s", arg->val, cnf->dotdir); 82283961Sbapt } 83283961Sbapt 84283961Sbapt copymkdir(homedir ? homedir : pwd->pw_dir, dotdir ? dotdir: cnf->dotdir, 85283961Sbapt cnf->homemode, pwd->pw_uid, pwd->pw_gid); 86283961Sbapt pw_log(cnf, mode, W_USER, "%s(%u) home %s made", pwd->pw_name, 87283961Sbapt pwd->pw_uid, pwd->pw_dir); 88283961Sbapt} 89283961Sbapt 9020253Sjoerg/*- 9120253Sjoerg * -C config configuration file 9220253Sjoerg * -q quiet operation 9320253Sjoerg * -n name login name 9420253Sjoerg * -u uid user id 9520253Sjoerg * -c comment user name/comment 9620253Sjoerg * -d directory home directory 9720253Sjoerg * -e date account expiry date 9820253Sjoerg * -p date password expiry date 9920253Sjoerg * -g grp primary group 10020253Sjoerg * -G grp1,grp2 additional groups 10120253Sjoerg * -m [ -k dir ] create and set up home 10220253Sjoerg * -s shell name of login shell 10320253Sjoerg * -o duplicate uid ok 10420253Sjoerg * -L class user class 10520253Sjoerg * -l name new login name 10620253Sjoerg * -h fd password filehandle 107124382Siedowse * -H fd encrypted password filehandle 10820253Sjoerg * -F force print or add 10920253Sjoerg * Setting defaults: 11020253Sjoerg * -D set user defaults 11120253Sjoerg * -b dir default home root dir 11220253Sjoerg * -e period default expiry period 11320253Sjoerg * -p period default password change period 11420253Sjoerg * -g group default group 11520253Sjoerg * -G grp1,grp2.. default additional groups 11620253Sjoerg * -L class default login class 11720253Sjoerg * -k dir default home skeleton 11820253Sjoerg * -s shell default shell 11920253Sjoerg * -w method default password method 12020253Sjoerg */ 12120253Sjoerg 12220253Sjoergint 12320253Sjoergpw_user(struct userconf * cnf, int mode, struct cargs * args) 12420253Sjoerg{ 12552527Sdavidn int rc, edited = 0; 12620253Sjoerg char *p = NULL; 12752512Sdavidn char *passtmp; 12820253Sjoerg struct carg *a_name; 12920253Sjoerg struct carg *a_uid; 13020253Sjoerg struct carg *arg; 13120253Sjoerg struct passwd *pwd = NULL; 13220253Sjoerg struct group *grp; 13320253Sjoerg struct stat st; 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 15752512Sdavidn 15820253Sjoerg /* 15920267Sjoerg * With M_NEXT, we only need to return the 16020267Sjoerg * next uid to stdout 16120267Sjoerg */ 16220267Sjoerg if (mode == M_NEXT) 16320267Sjoerg { 16420267Sjoerg uid_t next = pw_uidpolicy(cnf, args); 16520267Sjoerg if (getarg(args, 'q')) 16620267Sjoerg return next; 167283842Sbapt printf("%u:", next); 16820267Sjoerg pw_group(cnf, mode, args); 16920267Sjoerg return EXIT_SUCCESS; 17020267Sjoerg } 17120267Sjoerg 17220267Sjoerg /* 17320253Sjoerg * We can do all of the common legwork here 17420253Sjoerg */ 17520253Sjoerg 17620253Sjoerg if ((arg = getarg(args, 'b')) != NULL) { 17720267Sjoerg cnf->home = arg->val; 17820253Sjoerg } 17921052Sdavidn 180167919Sle if ((arg = getarg(args, 'M')) != NULL) { 181167919Sle dmode_c = arg->val; 182167919Sle if ((set = setmode(dmode_c)) == NULL) 183167919Sle errx(EX_DATAERR, "invalid directory creation mode '%s'", 184167919Sle dmode_c); 185219408Sjkim cnf->homemode = getmode(set, _DEF_DIRMODE); 186167919Sle free(set); 187168044Sle } 188167919Sle 18921052Sdavidn /* 19021052Sdavidn * If we'll need to use it or we're updating it, 19121052Sdavidn * then create the base home directory if necessary 19221052Sdavidn */ 193224535Sdelphij if (arg != NULL || getarg(args, 'm') != NULL) { 19421052Sdavidn int l = strlen(cnf->home); 19521052Sdavidn 19621052Sdavidn if (l > 1 && cnf->home[l-1] == '/') /* Shave off any trailing path delimiter */ 19721052Sdavidn cnf->home[--l] = '\0'; 19821052Sdavidn 19921052Sdavidn if (l < 2 || *cnf->home != '/') /* Check for absolute path name */ 20030259Scharnier errx(EX_DATAERR, "invalid base directory for home '%s'", cnf->home); 20121052Sdavidn 20221052Sdavidn if (stat(cnf->home, &st) == -1) { 20321052Sdavidn char dbuf[MAXPATHLEN]; 20421052Sdavidn 20521242Sdavidn /* 20621242Sdavidn * This is a kludge especially for Joerg :) 20721242Sdavidn * If the home directory would be created in the root partition, then 20821242Sdavidn * we really create it under /usr which is likely to have more space. 20921242Sdavidn * But we create a symlink from cnf->home -> "/usr" -> cnf->home 21021242Sdavidn */ 21121242Sdavidn if (strchr(cnf->home+1, '/') == NULL) { 212282683Sbapt snprintf(dbuf, MAXPATHLEN, "/usr%s", cnf->home); 213219408Sjkim if (mkdir(dbuf, _DEF_DIRMODE) != -1 || errno == EEXIST) { 21421242Sdavidn chown(dbuf, 0, 0); 215148584Spjd /* 216148584Spjd * Skip first "/" and create symlink: 217148584Spjd * /home -> usr/home 218148584Spjd */ 219148584Spjd symlink(dbuf+1, cnf->home); 22021242Sdavidn } 22121242Sdavidn /* If this falls, fall back to old method */ 22221242Sdavidn } 223130633Srobert strlcpy(dbuf, cnf->home, sizeof(dbuf)); 224130633Srobert p = dbuf; 22521242Sdavidn if (stat(dbuf, &st) == -1) { 226252377Skientzle while ((p = strchr(p + 1, '/')) != NULL) { 22721242Sdavidn *p = '\0'; 22821242Sdavidn if (stat(dbuf, &st) == -1) { 229219408Sjkim if (mkdir(dbuf, _DEF_DIRMODE) == -1) 23021242Sdavidn goto direrr; 23121242Sdavidn chown(dbuf, 0, 0); 23221242Sdavidn } else if (!S_ISDIR(st.st_mode)) 23330259Scharnier errx(EX_OSFILE, "'%s' (root home parent) is not a directory", dbuf); 23421242Sdavidn *p = '/'; 23521242Sdavidn } 23621052Sdavidn } 23721242Sdavidn if (stat(dbuf, &st) == -1) { 238219408Sjkim if (mkdir(dbuf, _DEF_DIRMODE) == -1) { 23930259Scharnier direrr: err(EX_OSFILE, "mkdir '%s'", dbuf); 24021052Sdavidn } 24121052Sdavidn chown(dbuf, 0, 0); 24221052Sdavidn } 24321052Sdavidn } else if (!S_ISDIR(st.st_mode)) 24430259Scharnier errx(EX_OSFILE, "root home `%s' is not a directory", cnf->home); 24521052Sdavidn } 24621052Sdavidn 24720253Sjoerg if ((arg = getarg(args, 'e')) != NULL) 24820253Sjoerg cnf->expire_days = atoi(arg->val); 24920253Sjoerg 25021330Sdavidn if ((arg = getarg(args, 'y')) != NULL) 25121330Sdavidn cnf->nispasswd = arg->val; 25221330Sdavidn 25320253Sjoerg if ((arg = getarg(args, 'p')) != NULL && arg->val) 25420253Sjoerg cnf->password_days = atoi(arg->val); 25520253Sjoerg 25620253Sjoerg if ((arg = getarg(args, 'g')) != NULL) { 25763596Sdavidn if (!*(p = arg->val)) /* Handle empty group list specially */ 25863596Sdavidn cnf->default_group = ""; 25963596Sdavidn else { 26063596Sdavidn if ((grp = GETGRNAM(p)) == NULL) { 26163596Sdavidn if (!isdigit((unsigned char)*p) || (grp = GETGRGID((gid_t) atoi(p))) == NULL) 26263596Sdavidn errx(EX_NOUSER, "group `%s' does not exist", p); 26363596Sdavidn } 26463596Sdavidn cnf->default_group = newstr(grp->gr_name); 26520253Sjoerg } 26620253Sjoerg } 26720253Sjoerg if ((arg = getarg(args, 'L')) != NULL) 268284110Sbapt cnf->default_class = pw_checkname(arg->val, 0); 26920253Sjoerg 27020253Sjoerg if ((arg = getarg(args, 'G')) != NULL && arg->val) { 27152527Sdavidn int i = 0; 27220253Sjoerg 27320747Sdavidn for (p = strtok(arg->val, ", \t"); p != NULL; p = strtok(NULL, ", \t")) { 27444229Sdavidn if ((grp = GETGRNAM(p)) == NULL) { 27561957Sache if (!isdigit((unsigned char)*p) || (grp = GETGRGID((gid_t) atoi(p))) == NULL) 27630259Scharnier errx(EX_NOUSER, "group `%s' does not exist", p); 27720253Sjoerg } 27820747Sdavidn if (extendarray(&cnf->groups, &cnf->numgroups, i + 2) != -1) 27920747Sdavidn cnf->groups[i++] = newstr(grp->gr_name); 28020253Sjoerg } 28120747Sdavidn while (i < cnf->numgroups) 28220253Sjoerg cnf->groups[i++] = NULL; 28320253Sjoerg } 28452527Sdavidn 28520253Sjoerg if ((arg = getarg(args, 'k')) != NULL) { 28626088Sdavidn if (stat(cnf->dotdir = arg->val, &st) == -1 || !S_ISDIR(st.st_mode)) 28730259Scharnier errx(EX_OSFILE, "skeleton `%s' is not a directory or does not exist", cnf->dotdir); 28820253Sjoerg } 28952527Sdavidn 29020253Sjoerg if ((arg = getarg(args, 's')) != NULL) 29120253Sjoerg cnf->shell_default = arg->val; 29220253Sjoerg 29363600Sdavidn if ((arg = getarg(args, 'w')) != NULL) 29463600Sdavidn cnf->default_password = boolean_val(arg->val, cnf->default_password); 29520253Sjoerg if (mode == M_ADD && getarg(args, 'D')) { 29620253Sjoerg if (getarg(args, 'n') != NULL) 29730259Scharnier errx(EX_DATAERR, "can't combine `-D' with `-n name'"); 29820253Sjoerg if ((arg = getarg(args, 'u')) != NULL && (p = strtok(arg->val, ", \t")) != NULL) { 29920253Sjoerg if ((cnf->min_uid = (uid_t) atoi(p)) == 0) 30020253Sjoerg cnf->min_uid = 1000; 30120253Sjoerg if ((p = strtok(NULL, " ,\t")) == NULL || (cnf->max_uid = (uid_t) atoi(p)) < cnf->min_uid) 30220253Sjoerg cnf->max_uid = 32000; 30320253Sjoerg } 30420253Sjoerg if ((arg = getarg(args, 'i')) != NULL && (p = strtok(arg->val, ", \t")) != NULL) { 30520253Sjoerg if ((cnf->min_gid = (gid_t) atoi(p)) == 0) 30620253Sjoerg cnf->min_gid = 1000; 30720253Sjoerg if ((p = strtok(NULL, " ,\t")) == NULL || (cnf->max_gid = (gid_t) atoi(p)) < cnf->min_gid) 30820253Sjoerg cnf->max_gid = 32000; 30920253Sjoerg } 31020253Sjoerg 31120253Sjoerg arg = getarg(args, 'C'); 31220253Sjoerg if (write_userconfig(arg ? arg->val : NULL)) 31320267Sjoerg return EXIT_SUCCESS; 314283814Sbapt err(EX_IOERR, "config udpate"); 31520253Sjoerg } 31652527Sdavidn 31720253Sjoerg if (mode == M_PRINT && getarg(args, 'a')) { 31820267Sjoerg int pretty = getarg(args, 'P') != NULL; 31944386Sdavidn int v7 = getarg(args, '7') != NULL; 32044229Sdavidn SETPWENT(); 32144229Sdavidn while ((pwd = GETPWENT()) != NULL) 32244386Sdavidn print_user(pwd, pretty, v7); 32344229Sdavidn ENDPWENT(); 32420267Sjoerg return EXIT_SUCCESS; 32520253Sjoerg } 32652527Sdavidn 32720253Sjoerg if ((a_name = getarg(args, 'n')) != NULL) 328284110Sbapt pwd = GETPWNAM(pw_checkname(a_name->val, 0)); 32920253Sjoerg a_uid = getarg(args, 'u'); 33020253Sjoerg 33120253Sjoerg if (a_uid == NULL) { 33220253Sjoerg if (a_name == NULL) 33330259Scharnier errx(EX_DATAERR, "user name or id required"); 33420253Sjoerg 33520253Sjoerg /* 33620253Sjoerg * Determine whether 'n' switch is name or uid - we don't 33720253Sjoerg * really don't really care which we have, but we need to 33820253Sjoerg * know. 33920253Sjoerg */ 34043780Sdes if (mode != M_ADD && pwd == NULL 341241108Sbapt && strspn(a_name->val, "0123456789") == strlen(a_name->val) 342241108Sbapt && *a_name->val) { 34320253Sjoerg (a_uid = a_name)->ch = 'u'; 34420253Sjoerg a_name = NULL; 34520253Sjoerg } 346273787Sbapt } else { 347277764Sbapt if (strspn(a_uid->val, "0123456789") != strlen(a_uid->val)) 348273787Sbapt errx(EX_USAGE, "-u expects a number"); 34920253Sjoerg } 35052527Sdavidn 35120253Sjoerg /* 35220253Sjoerg * Update, delete & print require that the user exists 35320253Sjoerg */ 35452512Sdavidn if (mode == M_UPDATE || mode == M_DELETE || 35552512Sdavidn mode == M_PRINT || mode == M_LOCK || mode == M_UNLOCK) { 35652527Sdavidn 35720253Sjoerg if (a_name == NULL && pwd == NULL) /* Try harder */ 35844229Sdavidn pwd = GETPWUID(atoi(a_uid->val)); 35920253Sjoerg 36020253Sjoerg if (pwd == NULL) { 36120253Sjoerg if (mode == M_PRINT && getarg(args, 'F')) { 36220253Sjoerg fakeuser.pw_name = a_name ? a_name->val : "nouser"; 363283841Sbapt fakeuser.pw_uid = a_uid ? (uid_t) atol(a_uid->val) : (uid_t) -1; 36444386Sdavidn return print_user(&fakeuser, 36544386Sdavidn getarg(args, 'P') != NULL, 36644386Sdavidn getarg(args, '7') != NULL); 36720253Sjoerg } 36820253Sjoerg if (a_name == NULL) 36930259Scharnier errx(EX_NOUSER, "no such uid `%s'", a_uid->val); 37030259Scharnier errx(EX_NOUSER, "no such user `%s'", a_name->val); 37120253Sjoerg } 37252527Sdavidn 37320253Sjoerg if (a_name == NULL) /* May be needed later */ 37420253Sjoerg a_name = addarg(args, 'n', newstr(pwd->pw_name)); 37520253Sjoerg 37620253Sjoerg /* 37752512Sdavidn * The M_LOCK and M_UNLOCK functions simply add or remove 37852512Sdavidn * a "*LOCKED*" prefix from in front of the password to 37952512Sdavidn * prevent it decoding correctly, and therefore prevents 38052512Sdavidn * access. Of course, this only prevents access via 38152512Sdavidn * password authentication (not ssh, kerberos or any 38252512Sdavidn * other method that does not use the UNIX password) but 38352512Sdavidn * that is a known limitation. 38452512Sdavidn */ 38552512Sdavidn 38652512Sdavidn if (mode == M_LOCK) { 38752512Sdavidn if (strncmp(pwd->pw_passwd, locked_str, sizeof(locked_str)-1) == 0) 38852512Sdavidn errx(EX_DATAERR, "user '%s' is already locked", pwd->pw_name); 389282685Sbapt asprintf(&passtmp, "%s%s", locked_str, pwd->pw_passwd); 39052512Sdavidn if (passtmp == NULL) /* disaster */ 39152512Sdavidn errx(EX_UNAVAILABLE, "out of memory"); 39252512Sdavidn pwd->pw_passwd = passtmp; 39352527Sdavidn edited = 1; 39452512Sdavidn } else if (mode == M_UNLOCK) { 39552512Sdavidn if (strncmp(pwd->pw_passwd, locked_str, sizeof(locked_str)-1) != 0) 39652512Sdavidn errx(EX_DATAERR, "user '%s' is not locked", pwd->pw_name); 39752512Sdavidn pwd->pw_passwd += sizeof(locked_str)-1; 39852527Sdavidn edited = 1; 399284111Sbapt } else if (mode == M_DELETE) 400284111Sbapt return (delete_user(cnf, pwd, a_name, 401284111Sbapt getarg(args, 'r') != NULL, mode)); 402284111Sbapt else if (mode == M_PRINT) 40344386Sdavidn return print_user(pwd, 40444386Sdavidn getarg(args, 'P') != NULL, 40544386Sdavidn getarg(args, '7') != NULL); 40620253Sjoerg 40720253Sjoerg /* 40820253Sjoerg * The rest is edit code 40920253Sjoerg */ 41020253Sjoerg if ((arg = getarg(args, 'l')) != NULL) { 41120253Sjoerg if (strcmp(pwd->pw_name, "root") == 0) 41230259Scharnier errx(EX_DATAERR, "can't rename `root' account"); 413284110Sbapt pwd->pw_name = pw_checkname(arg->val, 0); 41452527Sdavidn edited = 1; 41520253Sjoerg } 41652527Sdavidn 41761957Sache if ((arg = getarg(args, 'u')) != NULL && isdigit((unsigned char)*arg->val)) { 41820253Sjoerg pwd->pw_uid = (uid_t) atol(arg->val); 41952527Sdavidn edited = 1; 42020253Sjoerg if (pwd->pw_uid != 0 && strcmp(pwd->pw_name, "root") == 0) 42130259Scharnier errx(EX_DATAERR, "can't change uid of `root' account"); 42220253Sjoerg if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0) 42330259Scharnier warnx("WARNING: account `%s' will have a uid of 0 (superuser access!)", pwd->pw_name); 42420253Sjoerg } 42520253Sjoerg 42652527Sdavidn if ((arg = getarg(args, 'g')) != NULL && pwd->pw_uid != 0) { /* Already checked this */ 42752527Sdavidn gid_t newgid = (gid_t) GETGRNAM(cnf->default_group)->gr_gid; 42852527Sdavidn if (newgid != pwd->pw_gid) { 42952527Sdavidn edited = 1; 43061762Sdavidn pwd->pw_gid = newgid; 43152527Sdavidn } 43252527Sdavidn } 43352527Sdavidn 43420253Sjoerg if ((arg = getarg(args, 'p')) != NULL) { 43552527Sdavidn if (*arg->val == '\0' || strcmp(arg->val, "0") == 0) { 43652527Sdavidn if (pwd->pw_change != 0) { 43752527Sdavidn pwd->pw_change = 0; 43852527Sdavidn edited = 1; 43952527Sdavidn } 44052527Sdavidn } 44120253Sjoerg else { 44220253Sjoerg time_t now = time(NULL); 44320253Sjoerg time_t expire = parse_date(now, arg->val); 44420253Sjoerg 44552527Sdavidn if (pwd->pw_change != expire) { 44652527Sdavidn pwd->pw_change = expire; 44752527Sdavidn edited = 1; 44852527Sdavidn } 44920253Sjoerg } 45020253Sjoerg } 45152527Sdavidn 45220267Sjoerg if ((arg = getarg(args, 'e')) != NULL) { 45352527Sdavidn if (*arg->val == '\0' || strcmp(arg->val, "0") == 0) { 45452527Sdavidn if (pwd->pw_expire != 0) { 45552527Sdavidn pwd->pw_expire = 0; 45652527Sdavidn edited = 1; 45752527Sdavidn } 45852527Sdavidn } 45920253Sjoerg else { 46020253Sjoerg time_t now = time(NULL); 46120253Sjoerg time_t expire = parse_date(now, arg->val); 46220253Sjoerg 46352527Sdavidn if (pwd->pw_expire != expire) { 46452527Sdavidn pwd->pw_expire = expire; 46552527Sdavidn edited = 1; 46652527Sdavidn } 46720253Sjoerg } 46820253Sjoerg } 46920253Sjoerg 47052527Sdavidn if ((arg = getarg(args, 's')) != NULL) { 47152527Sdavidn char *shell = shell_path(cnf->shelldir, cnf->shells, arg->val); 47252527Sdavidn if (shell == NULL) 47352527Sdavidn shell = ""; 47452527Sdavidn if (strcmp(shell, pwd->pw_shell) != 0) { 47552527Sdavidn pwd->pw_shell = shell; 47652527Sdavidn edited = 1; 47752527Sdavidn } 47852527Sdavidn } 47920253Sjoerg 48052527Sdavidn if (getarg(args, 'L')) { 48152527Sdavidn if (cnf->default_class == NULL) 48252527Sdavidn cnf->default_class = ""; 48352527Sdavidn if (strcmp(pwd->pw_class, cnf->default_class) != 0) { 48452527Sdavidn pwd->pw_class = cnf->default_class; 48552527Sdavidn edited = 1; 48652527Sdavidn } 48752527Sdavidn } 48852527Sdavidn 48920747Sdavidn if ((arg = getarg(args, 'd')) != NULL) { 490130629Srobert if (strcmp(pwd->pw_dir, arg->val)) 491130629Srobert edited = 1; 49220747Sdavidn if (stat(pwd->pw_dir = arg->val, &st) == -1) { 49320747Sdavidn if (getarg(args, 'm') == NULL && strcmp(pwd->pw_dir, "/nonexistent") != 0) 49430259Scharnier warnx("WARNING: home `%s' does not exist", pwd->pw_dir); 49520747Sdavidn } else if (!S_ISDIR(st.st_mode)) 49630259Scharnier warnx("WARNING: home `%s' is not a directory", pwd->pw_dir); 49720747Sdavidn } 49820747Sdavidn 499124382Siedowse if ((arg = getarg(args, 'w')) != NULL && 500124382Siedowse getarg(args, 'h') == NULL && getarg(args, 'H') == NULL) { 50164918Sgreen login_cap_t *lc; 50264918Sgreen 50364918Sgreen lc = login_getpwclass(pwd); 50464918Sgreen if (lc == NULL || 505252688Sdes login_setcryptfmt(lc, "sha512", NULL) == NULL) 50664918Sgreen warn("setting crypt(3) format"); 50764918Sgreen login_close(lc); 50820267Sjoerg pwd->pw_passwd = pw_password(cnf, args, pwd->pw_name); 50952527Sdavidn edited = 1; 51052527Sdavidn } 51120267Sjoerg 51220253Sjoerg } else { 51364918Sgreen login_cap_t *lc; 51452527Sdavidn 51552527Sdavidn /* 51652527Sdavidn * Add code 51752527Sdavidn */ 51852527Sdavidn 51920253Sjoerg if (a_name == NULL) /* Required */ 52030259Scharnier errx(EX_DATAERR, "login name required"); 52144229Sdavidn else if ((pwd = GETPWNAM(a_name->val)) != NULL) /* Exists */ 52230259Scharnier errx(EX_DATAERR, "login name `%s' already exists", a_name->val); 52320253Sjoerg 52420253Sjoerg /* 52520253Sjoerg * Now, set up defaults for a new user 52620253Sjoerg */ 52720253Sjoerg pwd = &fakeuser; 52820253Sjoerg pwd->pw_name = a_name->val; 52920253Sjoerg pwd->pw_class = cnf->default_class ? cnf->default_class : ""; 53020253Sjoerg pwd->pw_uid = pw_uidpolicy(cnf, args); 53120253Sjoerg pwd->pw_gid = pw_gidpolicy(cnf, args, pwd->pw_name, (gid_t) pwd->pw_uid); 53220253Sjoerg pwd->pw_change = pw_pwdpolicy(cnf, args); 53320253Sjoerg pwd->pw_expire = pw_exppolicy(cnf, args); 53420253Sjoerg pwd->pw_dir = pw_homepolicy(cnf, args, pwd->pw_name); 53520253Sjoerg pwd->pw_shell = pw_shellpolicy(cnf, args, NULL); 53664918Sgreen lc = login_getpwclass(pwd); 537272833Sdes if (lc == NULL || login_setcryptfmt(lc, "sha512", NULL) == NULL) 53864918Sgreen warn("setting crypt(3) format"); 53964918Sgreen login_close(lc); 54064918Sgreen pwd->pw_passwd = pw_password(cnf, args, pwd->pw_name); 54152527Sdavidn edited = 1; 54220253Sjoerg 54320253Sjoerg if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0) 54430259Scharnier warnx("WARNING: new account `%s' has a uid of 0 (superuser access!)", pwd->pw_name); 54520253Sjoerg } 54620253Sjoerg 54720253Sjoerg /* 54820253Sjoerg * Shared add/edit code 54920253Sjoerg */ 55052527Sdavidn if ((arg = getarg(args, 'c')) != NULL) { 551284110Sbapt char *gecos = pw_checkname(arg->val, 1); 55252527Sdavidn if (strcmp(pwd->pw_gecos, gecos) != 0) { 55352527Sdavidn pwd->pw_gecos = gecos; 55452527Sdavidn edited = 1; 55552527Sdavidn } 55652527Sdavidn } 55720253Sjoerg 558124382Siedowse if ((arg = getarg(args, 'h')) != NULL || 559124382Siedowse (arg = getarg(args, 'H')) != NULL) { 56063572Sdavidn if (strcmp(arg->val, "-") == 0) { 56163572Sdavidn if (!pwd->pw_passwd || *pwd->pw_passwd != '*') { 56263572Sdavidn pwd->pw_passwd = "*"; /* No access */ 56363572Sdavidn edited = 1; 56463572Sdavidn } 56563572Sdavidn } else { 56620253Sjoerg int fd = atoi(arg->val); 567124382Siedowse int precrypt = (arg->ch == 'H'); 56820253Sjoerg int b; 56920253Sjoerg int istty = isatty(fd); 57020253Sjoerg struct termios t; 57164918Sgreen login_cap_t *lc; 57220253Sjoerg 57320253Sjoerg if (istty) { 57420253Sjoerg if (tcgetattr(fd, &t) == -1) 57520253Sjoerg istty = 0; 57620253Sjoerg else { 57720253Sjoerg struct termios n = t; 57820253Sjoerg 57920253Sjoerg /* Disable echo */ 58020253Sjoerg n.c_lflag &= ~(ECHO); 58120253Sjoerg tcsetattr(fd, TCSANOW, &n); 582124382Siedowse printf("%s%spassword for user %s:", 583124382Siedowse (mode == M_UPDATE) ? "new " : "", 584124382Siedowse precrypt ? "encrypted " : "", 585124382Siedowse pwd->pw_name); 58620253Sjoerg fflush(stdout); 58720253Sjoerg } 58820253Sjoerg } 58920253Sjoerg b = read(fd, line, sizeof(line) - 1); 59020253Sjoerg if (istty) { /* Restore state */ 59120253Sjoerg tcsetattr(fd, TCSANOW, &t); 59220253Sjoerg fputc('\n', stdout); 59320253Sjoerg fflush(stdout); 59420253Sjoerg } 595283814Sbapt if (b < 0) 596283814Sbapt err(EX_IOERR, "-%c file descriptor", 597283814Sbapt precrypt ? 'H' : 'h'); 59820253Sjoerg line[b] = '\0'; 599168045Sle if ((p = strpbrk(line, "\r\n")) != NULL) 60020253Sjoerg *p = '\0'; 60120253Sjoerg if (!*line) 60230259Scharnier errx(EX_DATAERR, "empty password read on file descriptor %d", fd); 603124382Siedowse if (precrypt) { 604124382Siedowse if (strchr(line, ':') != NULL) 605124382Siedowse return EX_DATAERR; 606124382Siedowse pwd->pw_passwd = line; 607124382Siedowse } else { 608124382Siedowse lc = login_getpwclass(pwd); 609124382Siedowse if (lc == NULL || 610272833Sdes login_setcryptfmt(lc, "sha512", NULL) == NULL) 611124382Siedowse warn("setting crypt(3) format"); 612124382Siedowse login_close(lc); 613124382Siedowse pwd->pw_passwd = pw_pwcrypt(line); 614124382Siedowse } 61552527Sdavidn edited = 1; 61620253Sjoerg } 61720253Sjoerg } 61820267Sjoerg 61920267Sjoerg /* 62020267Sjoerg * Special case: -N only displays & exits 62120267Sjoerg */ 62220267Sjoerg if (getarg(args, 'N') != NULL) 62344386Sdavidn return print_user(pwd, 62444386Sdavidn getarg(args, 'P') != NULL, 62544386Sdavidn getarg(args, '7') != NULL); 62620267Sjoerg 62721330Sdavidn if (mode == M_ADD) { 62852527Sdavidn edited = 1; /* Always */ 62952502Sdavidn rc = addpwent(pwd); 630283814Sbapt if (rc == -1) 631283814Sbapt errx(EX_IOERR, "user '%s' already exists", 632283814Sbapt pwd->pw_name); 633283814Sbapt else if (rc != 0) 634283814Sbapt err(EX_IOERR, "passwd file update"); 63552502Sdavidn if (cnf->nispasswd && *cnf->nispasswd=='/') { 63652502Sdavidn rc = addnispwent(cnf->nispasswd, pwd); 63752502Sdavidn if (rc == -1) 63852502Sdavidn warnx("User '%s' already exists in NIS passwd", pwd->pw_name); 63952502Sdavidn else 64056000Sdavidn warn("NIS passwd update"); 64152502Sdavidn /* NOTE: we treat NIS-only update errors as non-fatal */ 64252502Sdavidn } 64352512Sdavidn } else if (mode == M_UPDATE || mode == M_LOCK || mode == M_UNLOCK) { 64452527Sdavidn if (edited) { /* Only updated this if required */ 64552527Sdavidn rc = chgpwent(a_name->val, pwd); 646283814Sbapt if (rc == -1) 647283814Sbapt errx(EX_IOERR, "user '%s' does not exist (NIS?)", pwd->pw_name); 648283814Sbapt else if (rc != 0) 649283814Sbapt err(EX_IOERR, "passwd file update"); 65052527Sdavidn if ( cnf->nispasswd && *cnf->nispasswd=='/') { 65152527Sdavidn rc = chgnispwent(cnf->nispasswd, a_name->val, pwd); 65252527Sdavidn if (rc == -1) 65352527Sdavidn warn("User '%s' not found in NIS passwd", pwd->pw_name); 65452527Sdavidn else 65556000Sdavidn warn("NIS passwd update"); 65652527Sdavidn /* NOTE: NIS-only update errors are not fatal */ 65752527Sdavidn } 65852502Sdavidn } 65921330Sdavidn } 66021330Sdavidn 66120253Sjoerg /* 66220253Sjoerg * Ok, user is created or changed - now edit group file 66320253Sjoerg */ 66420253Sjoerg 665242349Sbapt if (mode == M_ADD || getarg(args, 'G') != NULL) { 666273779Sbapt int i, j; 667273779Sbapt /* First remove the user from all group */ 668273779Sbapt SETGRENT(); 669273779Sbapt while ((grp = GETGRENT()) != NULL) { 670273779Sbapt char group[MAXLOGNAME]; 671273779Sbapt if (grp->gr_mem == NULL) 672273779Sbapt continue; 673273779Sbapt for (i = 0; grp->gr_mem[i] != NULL; i++) { 674273779Sbapt if (strcmp(grp->gr_mem[i] , pwd->pw_name) != 0) 675273779Sbapt continue; 676273779Sbapt for (j = i; grp->gr_mem[j] != NULL ; j++) 677273779Sbapt grp->gr_mem[j] = grp->gr_mem[j+1]; 678273779Sbapt strlcpy(group, grp->gr_name, MAXLOGNAME); 679273779Sbapt chggrent(group, grp); 680273779Sbapt } 681273779Sbapt } 682273779Sbapt ENDGRENT(); 683273779Sbapt 684273779Sbapt /* now add to group where needed */ 685242349Sbapt for (i = 0; cnf->groups[i] != NULL; i++) { 686242349Sbapt grp = GETGRNAM(cnf->groups[i]); 687244737Sbapt grp = gr_add(grp, pwd->pw_name); 688244737Sbapt /* 689244737Sbapt * grp can only be NULL in 2 cases: 690244737Sbapt * - the new member is already a member 691244737Sbapt * - a problem with memory occurs 692244737Sbapt * in both cases we want to skip now. 693244737Sbapt */ 694244737Sbapt if (grp == NULL) 695242349Sbapt continue; 696242349Sbapt chggrent(cnf->groups[i], grp); 697245114Smjg free(grp); 698242349Sbapt } 699242349Sbapt } 700242349Sbapt 701242349Sbapt 70261759Sdavidn /* go get a current version of pwd */ 70361759Sdavidn pwd = GETPWNAM(a_name->val); 70461759Sdavidn if (pwd == NULL) { 70561759Sdavidn /* This will fail when we rename, so special case that */ 70661759Sdavidn if (mode == M_UPDATE && (arg = getarg(args, 'l')) != NULL) { 70761759Sdavidn a_name->val = arg->val; /* update new name */ 70861759Sdavidn pwd = GETPWNAM(a_name->val); /* refetch renamed rec */ 70961759Sdavidn } 71061759Sdavidn } 71161759Sdavidn if (pwd == NULL) /* can't go on without this */ 71230259Scharnier errx(EX_NOUSER, "user '%s' disappeared during update", a_name->val); 71320253Sjoerg 71444229Sdavidn grp = GETGRGID(pwd->pw_gid); 715283842Sbapt pw_log(cnf, mode, W_USER, "%s(%u):%s(%u):%s:%s:%s", 716283842Sbapt pwd->pw_name, pwd->pw_uid, 717283842Sbapt grp ? grp->gr_name : "unknown", (grp ? grp->gr_gid : (uid_t)-1), 71820253Sjoerg pwd->pw_gecos, pwd->pw_dir, pwd->pw_shell); 71920253Sjoerg 72020253Sjoerg /* 72120253Sjoerg * If adding, let's touch and chown the user's mail file. This is not 72220253Sjoerg * strictly necessary under BSD with a 0755 maildir but it also 72320253Sjoerg * doesn't hurt anything to create the empty mailfile 72420253Sjoerg */ 72520253Sjoerg if (mode == M_ADD) { 726283961Sbapt if (PWALTDIR() != PWF_ALT) { 727283961Sbapt arg = getarg(args, 'R'); 728283961Sbapt snprintf(path, sizeof(path), "%s%s/%s", 729283961Sbapt arg ? arg->val : "", _PATH_MAILDIR, pwd->pw_name); 730283961Sbapt close(open(path, O_RDWR | O_CREAT, 0600)); /* Preserve contents & 73144229Sdavidn * mtime */ 732283961Sbapt chown(path, pwd->pw_uid, pwd->pw_gid); 73320253Sjoerg } 73420253Sjoerg } 73552527Sdavidn 73620253Sjoerg /* 73782868Sdd * Let's create and populate the user's home directory. Note 73820253Sjoerg * that this also `works' for editing users if -m is used, but 73920253Sjoerg * existing files will *not* be overwritten. 74020253Sjoerg */ 741283961Sbapt if (PWALTDIR() != PWF_ALT && getarg(args, 'm') != NULL && pwd->pw_dir && 742283961Sbapt *pwd->pw_dir == '/' && pwd->pw_dir[1]) 743283961Sbapt create_and_populate_homedir(mode, args, pwd, cnf); 74452527Sdavidn 74582868Sdd /* 74682868Sdd * Finally, send mail to the new user as well, if we are asked to 74782868Sdd */ 74882868Sdd if (mode == M_ADD && !PWALTDIR() && cnf->newmail && *cnf->newmail && (fp = fopen(cnf->newmail, "r")) != NULL) { 74982868Sdd FILE *pfp = popen(_PATH_SENDMAIL " -t", "w"); 75082868Sdd 75182868Sdd if (pfp == NULL) 75282868Sdd warn("sendmail"); 75382868Sdd else { 75482868Sdd fprintf(pfp, "From: root\n" "To: %s\n" "Subject: Welcome!\n\n", pwd->pw_name); 75582868Sdd while (fgets(line, sizeof(line), fp) != NULL) { 75682868Sdd /* Do substitutions? */ 75782868Sdd fputs(line, pfp); 75882868Sdd } 75982868Sdd pclose(pfp); 760283842Sbapt pw_log(cnf, mode, W_USER, "%s(%u) new user mail sent", 761283842Sbapt pwd->pw_name, pwd->pw_uid); 76282868Sdd } 76382868Sdd fclose(fp); 76482868Sdd } 76582868Sdd 76620267Sjoerg return EXIT_SUCCESS; 76720253Sjoerg} 76820253Sjoerg 76920253Sjoerg 77020253Sjoergstatic uid_t 77120253Sjoergpw_uidpolicy(struct userconf * cnf, struct cargs * args) 77220253Sjoerg{ 77320253Sjoerg struct passwd *pwd; 77420253Sjoerg uid_t uid = (uid_t) - 1; 77520253Sjoerg struct carg *a_uid = getarg(args, 'u'); 77620253Sjoerg 77720253Sjoerg /* 77820253Sjoerg * Check the given uid, if any 77920253Sjoerg */ 78020253Sjoerg if (a_uid != NULL) { 78120253Sjoerg uid = (uid_t) atol(a_uid->val); 78220253Sjoerg 78344229Sdavidn if ((pwd = GETPWUID(uid)) != NULL && getarg(args, 'o') == NULL) 784283842Sbapt errx(EX_DATAERR, "uid `%u' has already been allocated", pwd->pw_uid); 78520253Sjoerg } else { 78620253Sjoerg struct bitmap bm; 78720253Sjoerg 78820253Sjoerg /* 78920253Sjoerg * We need to allocate the next available uid under one of 79020253Sjoerg * two policies a) Grab the first unused uid b) Grab the 79120253Sjoerg * highest possible unused uid 79220253Sjoerg */ 79320253Sjoerg if (cnf->min_uid >= cnf->max_uid) { /* Sanity 79420253Sjoerg * claus^H^H^H^Hheck */ 79520253Sjoerg cnf->min_uid = 1000; 79620253Sjoerg cnf->max_uid = 32000; 79720253Sjoerg } 79820253Sjoerg bm = bm_alloc(cnf->max_uid - cnf->min_uid + 1); 79920253Sjoerg 80020253Sjoerg /* 80120253Sjoerg * Now, let's fill the bitmap from the password file 80220253Sjoerg */ 80344229Sdavidn SETPWENT(); 80444229Sdavidn while ((pwd = GETPWENT()) != NULL) 80544229Sdavidn if (pwd->pw_uid >= (uid_t) cnf->min_uid && pwd->pw_uid <= (uid_t) cnf->max_uid) 80620253Sjoerg bm_setbit(&bm, pwd->pw_uid - cnf->min_uid); 80744229Sdavidn ENDPWENT(); 80820253Sjoerg 80920253Sjoerg /* 81020253Sjoerg * Then apply the policy, with fallback to reuse if necessary 81120253Sjoerg */ 81220253Sjoerg if (cnf->reuse_uids || (uid = (uid_t) (bm_lastset(&bm) + cnf->min_uid + 1)) > cnf->max_uid) 81320253Sjoerg uid = (uid_t) (bm_firstunset(&bm) + cnf->min_uid); 81420253Sjoerg 81520253Sjoerg /* 81620253Sjoerg * Another sanity check 81720253Sjoerg */ 81820253Sjoerg if (uid < cnf->min_uid || uid > cnf->max_uid) 81930259Scharnier errx(EX_SOFTWARE, "unable to allocate a new uid - range fully used"); 82020253Sjoerg bm_dealloc(&bm); 82120253Sjoerg } 82220253Sjoerg return uid; 82320253Sjoerg} 82420253Sjoerg 82520253Sjoerg 82620253Sjoergstatic uid_t 82720253Sjoergpw_gidpolicy(struct userconf * cnf, struct cargs * args, char *nam, gid_t prefer) 82820253Sjoerg{ 82920253Sjoerg struct group *grp; 83020253Sjoerg gid_t gid = (uid_t) - 1; 83120253Sjoerg struct carg *a_gid = getarg(args, 'g'); 83220253Sjoerg 83320253Sjoerg /* 83420253Sjoerg * If no arg given, see if default can help out 83520253Sjoerg */ 83620253Sjoerg if (a_gid == NULL && cnf->default_group && *cnf->default_group) 83720253Sjoerg a_gid = addarg(args, 'g', cnf->default_group); 83820253Sjoerg 83920253Sjoerg /* 84020253Sjoerg * Check the given gid, if any 84120253Sjoerg */ 84244229Sdavidn SETGRENT(); 84320253Sjoerg if (a_gid != NULL) { 84444229Sdavidn if ((grp = GETGRNAM(a_gid->val)) == NULL) { 84520253Sjoerg gid = (gid_t) atol(a_gid->val); 84661957Sache if ((gid == 0 && !isdigit((unsigned char)*a_gid->val)) || (grp = GETGRGID(gid)) == NULL) 84730259Scharnier errx(EX_NOUSER, "group `%s' is not defined", a_gid->val); 84820253Sjoerg } 84920253Sjoerg gid = grp->gr_gid; 850262865Sjulian } else if ((grp = GETGRNAM(nam)) != NULL && 851262865Sjulian (grp->gr_mem == NULL || grp->gr_mem[0] == NULL)) { 85220267Sjoerg gid = grp->gr_gid; /* Already created? Use it anyway... */ 85320253Sjoerg } else { 85420253Sjoerg struct cargs grpargs; 85520253Sjoerg char tmp[32]; 85620253Sjoerg 85720253Sjoerg LIST_INIT(&grpargs); 85820253Sjoerg addarg(&grpargs, 'n', nam); 85920253Sjoerg 86020253Sjoerg /* 86120253Sjoerg * We need to auto-create a group with the user's name. We 86220253Sjoerg * can send all the appropriate output to our sister routine 86320253Sjoerg * bit first see if we can create a group with gid==uid so we 86420253Sjoerg * can keep the user and group ids in sync. We purposely do 86520253Sjoerg * NOT check the gid range if we can force the sync. If the 86620253Sjoerg * user's name dups an existing group, then the group add 86720253Sjoerg * function will happily handle that case for us and exit. 86820253Sjoerg */ 86944229Sdavidn if (GETGRGID(prefer) == NULL) { 870282700Sbapt snprintf(tmp, sizeof(tmp), "%u", prefer); 87120253Sjoerg addarg(&grpargs, 'g', tmp); 87220253Sjoerg } 87320267Sjoerg if (getarg(args, 'N')) 87420267Sjoerg { 87520267Sjoerg addarg(&grpargs, 'N', NULL); 87620267Sjoerg addarg(&grpargs, 'q', NULL); 87720267Sjoerg gid = pw_group(cnf, M_NEXT, &grpargs); 87820267Sjoerg } 87920267Sjoerg else 88020267Sjoerg { 88120267Sjoerg pw_group(cnf, M_ADD, &grpargs); 88244229Sdavidn if ((grp = GETGRNAM(nam)) != NULL) 88320267Sjoerg gid = grp->gr_gid; 88420267Sjoerg } 88570486Sben a_gid = LIST_FIRST(&grpargs); 88620253Sjoerg while (a_gid != NULL) { 88770486Sben struct carg *t = LIST_NEXT(a_gid, list); 88820253Sjoerg LIST_REMOVE(a_gid, list); 88920253Sjoerg a_gid = t; 89020253Sjoerg } 89120253Sjoerg } 89244229Sdavidn ENDGRENT(); 89320253Sjoerg return gid; 89420253Sjoerg} 89520253Sjoerg 89620253Sjoerg 89720253Sjoergstatic time_t 89820253Sjoergpw_pwdpolicy(struct userconf * cnf, struct cargs * args) 89920253Sjoerg{ 90020253Sjoerg time_t result = 0; 90120253Sjoerg time_t now = time(NULL); 90227831Sdavidn struct carg *arg = getarg(args, 'p'); 90320253Sjoerg 90420253Sjoerg if (arg != NULL) { 90520253Sjoerg if ((result = parse_date(now, arg->val)) == now) 90630259Scharnier errx(EX_DATAERR, "invalid date/time `%s'", arg->val); 90720253Sjoerg } else if (cnf->password_days > 0) 90820253Sjoerg result = now + ((long) cnf->password_days * 86400L); 90920253Sjoerg return result; 91020253Sjoerg} 91120253Sjoerg 91220253Sjoerg 91320253Sjoergstatic time_t 91420253Sjoergpw_exppolicy(struct userconf * cnf, struct cargs * args) 91520253Sjoerg{ 91620253Sjoerg time_t result = 0; 91720253Sjoerg time_t now = time(NULL); 91820253Sjoerg struct carg *arg = getarg(args, 'e'); 91920253Sjoerg 92020253Sjoerg if (arg != NULL) { 92120253Sjoerg if ((result = parse_date(now, arg->val)) == now) 92230259Scharnier errx(EX_DATAERR, "invalid date/time `%s'", arg->val); 92320253Sjoerg } else if (cnf->expire_days > 0) 92420253Sjoerg result = now + ((long) cnf->expire_days * 86400L); 92520253Sjoerg return result; 92620253Sjoerg} 92720253Sjoerg 92820253Sjoerg 92920253Sjoergstatic char * 93020253Sjoergpw_homepolicy(struct userconf * cnf, struct cargs * args, char const * user) 93120253Sjoerg{ 93220253Sjoerg struct carg *arg = getarg(args, 'd'); 933282699Sbapt static char home[128]; 93420253Sjoerg 93520253Sjoerg if (arg) 936282699Sbapt return (arg->val); 93720253Sjoerg 938282699Sbapt if (cnf->home == NULL || *cnf->home == '\0') 939282699Sbapt errx(EX_CONFIG, "no base home directory set"); 940282699Sbapt snprintf(home, sizeof(home), "%s/%s", cnf->home, user); 941282699Sbapt 942282699Sbapt return (home); 94320253Sjoerg} 94420253Sjoerg 94520253Sjoergstatic char * 94620253Sjoergshell_path(char const * path, char *shells[], char *sh) 94720253Sjoerg{ 94820253Sjoerg if (sh != NULL && (*sh == '/' || *sh == '\0')) 94920253Sjoerg return sh; /* specified full path or forced none */ 95020253Sjoerg else { 95120253Sjoerg char *p; 95220253Sjoerg char paths[_UC_MAXLINE]; 95320253Sjoerg 95420253Sjoerg /* 95520253Sjoerg * We need to search paths 95620253Sjoerg */ 957130633Srobert strlcpy(paths, path, sizeof(paths)); 95820253Sjoerg for (p = strtok(paths, ": \t\r\n"); p != NULL; p = strtok(NULL, ": \t\r\n")) { 95920253Sjoerg int i; 96020253Sjoerg static char shellpath[256]; 96120253Sjoerg 96220253Sjoerg if (sh != NULL) { 963282700Sbapt snprintf(shellpath, sizeof(shellpath), "%s/%s", p, sh); 96420253Sjoerg if (access(shellpath, X_OK) == 0) 96520253Sjoerg return shellpath; 96620253Sjoerg } else 96720253Sjoerg for (i = 0; i < _UC_MAXSHELLS && shells[i] != NULL; i++) { 968282700Sbapt snprintf(shellpath, sizeof(shellpath), "%s/%s", p, shells[i]); 96920253Sjoerg if (access(shellpath, X_OK) == 0) 97020253Sjoerg return shellpath; 97120253Sjoerg } 97220253Sjoerg } 97320253Sjoerg if (sh == NULL) 97430259Scharnier errx(EX_OSFILE, "can't find shell `%s' in shell paths", sh); 97530259Scharnier errx(EX_CONFIG, "no default shell available or defined"); 97620253Sjoerg return NULL; 97720253Sjoerg } 97820253Sjoerg} 97920253Sjoerg 98020253Sjoerg 98120253Sjoergstatic char * 98220253Sjoergpw_shellpolicy(struct userconf * cnf, struct cargs * args, char *newshell) 98320253Sjoerg{ 98420253Sjoerg char *sh = newshell; 98520253Sjoerg struct carg *arg = getarg(args, 's'); 98620253Sjoerg 98720253Sjoerg if (newshell == NULL && arg != NULL) 98820253Sjoerg sh = arg->val; 98920253Sjoerg return shell_path(cnf->shelldir, cnf->shells, sh ? sh : cnf->shell_default); 99020253Sjoerg} 99120253Sjoerg 992179365Santoine#define SALTSIZE 32 99320253Sjoerg 994179365Santoinestatic char const chars[] = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ./"; 995179365Santoine 99620253Sjoergchar * 99720253Sjoergpw_pwcrypt(char *password) 99820253Sjoerg{ 99920253Sjoerg int i; 1000179365Santoine char salt[SALTSIZE + 1]; 1001231994Skevlo char *cryptpw; 100220253Sjoerg 100320253Sjoerg static char buf[256]; 100420253Sjoerg 100520253Sjoerg /* 100620253Sjoerg * Calculate a salt value 100720253Sjoerg */ 1008179365Santoine for (i = 0; i < SALTSIZE; i++) 1009181785Sache salt[i] = chars[arc4random_uniform(sizeof(chars) - 1)]; 1010179365Santoine salt[SALTSIZE] = '\0'; 101120253Sjoerg 1012231994Skevlo cryptpw = crypt(password, salt); 1013231994Skevlo if (cryptpw == NULL) 1014231994Skevlo errx(EX_CONFIG, "crypt(3) failure"); 1015231994Skevlo return strcpy(buf, cryptpw); 101620253Sjoerg} 101720253Sjoerg 101820590Sdavidn 101920253Sjoergstatic char * 102020253Sjoergpw_password(struct userconf * cnf, struct cargs * args, char const * user) 102120253Sjoerg{ 102220253Sjoerg int i, l; 102320253Sjoerg char pwbuf[32]; 102420253Sjoerg 102520253Sjoerg switch (cnf->default_password) { 102620253Sjoerg case -1: /* Random password */ 102773563Skris l = (arc4random() % 8 + 8); /* 8 - 16 chars */ 102820253Sjoerg for (i = 0; i < l; i++) 1029181785Sache pwbuf[i] = chars[arc4random_uniform(sizeof(chars)-1)]; 103020253Sjoerg pwbuf[i] = '\0'; 103120253Sjoerg 103220253Sjoerg /* 103320253Sjoerg * We give this information back to the user 103420253Sjoerg */ 1035124382Siedowse if (getarg(args, 'h') == NULL && getarg(args, 'H') == NULL && 1036124382Siedowse getarg(args, 'N') == NULL) { 103761957Sache if (isatty(STDOUT_FILENO)) 103820712Sdavidn printf("Password for '%s' is: ", user); 103920253Sjoerg printf("%s\n", pwbuf); 104020253Sjoerg fflush(stdout); 104120253Sjoerg } 104220253Sjoerg break; 104320253Sjoerg 104420253Sjoerg case -2: /* No password at all! */ 104520253Sjoerg return ""; 104620253Sjoerg 104720253Sjoerg case 0: /* No login - default */ 104820253Sjoerg default: 104920253Sjoerg return "*"; 105020253Sjoerg 105120253Sjoerg case 1: /* user's name */ 1052130633Srobert strlcpy(pwbuf, user, sizeof(pwbuf)); 105320253Sjoerg break; 105420253Sjoerg } 105520253Sjoerg return pw_pwcrypt(pwbuf); 105620253Sjoerg} 105720253Sjoerg 1058284111Sbaptstatic int 1059284111Sbaptdelete_user(struct userconf *cnf, struct passwd *pwd, struct carg *a_name, 1060284111Sbapt int delete, int mode) 1061284111Sbapt{ 1062284111Sbapt char file[MAXPATHLEN]; 1063284111Sbapt char home[MAXPATHLEN]; 1064284111Sbapt uid_t uid = pwd->pw_uid; 1065284111Sbapt struct group *gr, *grp; 1066284111Sbapt char grname[LOGNAMESIZE]; 1067284111Sbapt int rc; 1068284111Sbapt struct stat st; 106920253Sjoerg 1070284111Sbapt if (strcmp(pwd->pw_name, "root") == 0) 1071284111Sbapt errx(EX_DATAERR, "cannot remove user 'root'"); 1072284111Sbapt 1073284111Sbapt if (!PWALTDIR()) { 1074284111Sbapt /* 1075284111Sbapt * Remove opie record from /etc/opiekeys 1076284111Sbapt */ 1077284111Sbapt 1078284111Sbapt rmopie(pwd->pw_name); 1079284111Sbapt 1080284111Sbapt /* 1081284111Sbapt * Remove crontabs 1082284111Sbapt */ 1083284111Sbapt snprintf(file, sizeof(file), "/var/cron/tabs/%s", pwd->pw_name); 1084284111Sbapt if (access(file, F_OK) == 0) { 1085284111Sbapt snprintf(file, sizeof(file), "crontab -u %s -r", pwd->pw_name); 1086284111Sbapt system(file); 1087284111Sbapt } 1088284111Sbapt } 1089284111Sbapt /* 1090284111Sbapt * Save these for later, since contents of pwd may be 1091284111Sbapt * invalidated by deletion 1092284111Sbapt */ 1093284111Sbapt snprintf(file, sizeof(file), "%s/%s", _PATH_MAILDIR, pwd->pw_name); 1094284111Sbapt strlcpy(home, pwd->pw_dir, sizeof(home)); 1095284111Sbapt gr = GETGRGID(pwd->pw_gid); 1096284111Sbapt if (gr != NULL) 1097284111Sbapt strlcpy(grname, gr->gr_name, LOGNAMESIZE); 1098284111Sbapt else 1099284111Sbapt grname[0] = '\0'; 1100284111Sbapt 1101284111Sbapt rc = delpwent(pwd); 1102284111Sbapt if (rc == -1) 1103284111Sbapt err(EX_IOERR, "user '%s' does not exist", pwd->pw_name); 1104284111Sbapt else if (rc != 0) 1105284111Sbapt err(EX_IOERR, "passwd update"); 1106284111Sbapt 1107284111Sbapt if (cnf->nispasswd && *cnf->nispasswd=='/') { 1108284111Sbapt rc = delnispwent(cnf->nispasswd, a_name->val); 1109284111Sbapt if (rc == -1) 1110284111Sbapt warnx("WARNING: user '%s' does not exist in NIS passwd", pwd->pw_name); 1111284111Sbapt else if (rc != 0) 1112284111Sbapt warn("WARNING: NIS passwd update"); 1113284111Sbapt /* non-fatal */ 1114284111Sbapt } 1115284111Sbapt 1116284111Sbapt grp = GETGRNAM(a_name->val); 1117284111Sbapt if (grp != NULL && 1118284111Sbapt (grp->gr_mem == NULL || *grp->gr_mem == NULL) && 1119284111Sbapt strcmp(a_name->val, grname) == 0) 1120284111Sbapt delgrent(GETGRNAM(a_name->val)); 1121284111Sbapt SETGRENT(); 1122284111Sbapt while ((grp = GETGRENT()) != NULL) { 1123284111Sbapt int i, j; 1124284111Sbapt char group[MAXLOGNAME]; 1125284111Sbapt if (grp->gr_mem != NULL) { 1126284111Sbapt for (i = 0; grp->gr_mem[i] != NULL; i++) { 1127284111Sbapt if (!strcmp(grp->gr_mem[i], a_name->val)) { 1128284111Sbapt for (j = i; grp->gr_mem[j] != NULL; j++) 1129284111Sbapt grp->gr_mem[j] = grp->gr_mem[j+1]; 1130284111Sbapt strlcpy(group, grp->gr_name, MAXLOGNAME); 1131284111Sbapt chggrent(group, grp); 1132284111Sbapt } 1133284111Sbapt } 1134284111Sbapt } 1135284111Sbapt } 1136284111Sbapt ENDGRENT(); 1137284111Sbapt 1138284111Sbapt pw_log(cnf, mode, W_USER, "%s(%u) account removed", a_name->val, uid); 1139284111Sbapt 1140284111Sbapt if (PWALTDIR()) { 1141284111Sbapt /* 1142284111Sbapt * Remove mail file 1143284111Sbapt */ 1144284111Sbapt remove(file); 1145284111Sbapt 1146284111Sbapt /* 1147284111Sbapt * Remove at jobs 1148284111Sbapt */ 1149284111Sbapt if (getpwuid(uid) == NULL) 1150284111Sbapt rmat(uid); 1151284111Sbapt 1152284111Sbapt /* 1153284111Sbapt * Remove home directory and contents 1154284111Sbapt */ 1155284111Sbapt if (delete && *home == '/' && getpwuid(uid) == NULL) { 1156284111Sbapt if (stat(home, &st) != -1) { 1157284111Sbapt rm_r(home, uid); 1158284111Sbapt pw_log(cnf, mode, W_USER, "%s(%u) home '%s' %sremoved", 1159284111Sbapt a_name->val, uid, home, 1160284111Sbapt stat(home, &st) == -1 ? "" : "not completely "); 1161284111Sbapt } 1162284111Sbapt } 1163284111Sbapt } 1164284111Sbapt 1165284111Sbapt return (EXIT_SUCCESS); 1166284111Sbapt} 1167284111Sbapt 116820253Sjoergstatic int 116944386Sdavidnprint_user(struct passwd * pwd, int pretty, int v7) 117020253Sjoerg{ 117120253Sjoerg if (!pretty) { 1172242349Sbapt char *buf; 117320253Sjoerg 1174242349Sbapt if (!v7) 1175242349Sbapt pwd->pw_passwd = (pwd->pw_passwd == NULL) ? "" : "*"; 1176242349Sbapt 1177242349Sbapt buf = v7 ? pw_make_v7(pwd) : pw_make(pwd); 1178242349Sbapt printf("%s\n", buf); 1179242349Sbapt free(buf); 118020253Sjoerg } else { 118120267Sjoerg int j; 118220253Sjoerg char *p; 118344229Sdavidn struct group *grp = GETGRGID(pwd->pw_gid); 118420253Sjoerg char uname[60] = "User &", office[60] = "[None]", 118520253Sjoerg wphone[60] = "[None]", hphone[60] = "[None]"; 118620590Sdavidn char acexpire[32] = "[None]", pwexpire[32] = "[None]"; 118720590Sdavidn struct tm * tptr; 118820253Sjoerg 118920253Sjoerg if ((p = strtok(pwd->pw_gecos, ",")) != NULL) { 1190130633Srobert strlcpy(uname, p, sizeof(uname)); 119120253Sjoerg if ((p = strtok(NULL, ",")) != NULL) { 1192130633Srobert strlcpy(office, p, sizeof(office)); 119320253Sjoerg if ((p = strtok(NULL, ",")) != NULL) { 1194130633Srobert strlcpy(wphone, p, sizeof(wphone)); 119520253Sjoerg if ((p = strtok(NULL, "")) != NULL) { 1196130633Srobert strlcpy(hphone, p, 1197130633Srobert sizeof(hphone)); 119820253Sjoerg } 119920253Sjoerg } 120020253Sjoerg } 120120253Sjoerg } 120220253Sjoerg /* 120320253Sjoerg * Handle '&' in gecos field 120420253Sjoerg */ 120520253Sjoerg if ((p = strchr(uname, '&')) != NULL) { 120620253Sjoerg int l = strlen(pwd->pw_name); 120720253Sjoerg int m = strlen(p); 120820253Sjoerg 120920253Sjoerg memmove(p + l, p + 1, m); 121020253Sjoerg memmove(p, pwd->pw_name, l); 121161957Sache *p = (char) toupper((unsigned char)*p); 121220253Sjoerg } 121320590Sdavidn if (pwd->pw_expire > (time_t)0 && (tptr = localtime(&pwd->pw_expire)) != NULL) 121474569Sache strftime(acexpire, sizeof acexpire, "%c", tptr); 121561957Sache if (pwd->pw_change > (time_t)0 && (tptr = localtime(&pwd->pw_change)) != NULL) 121674569Sache strftime(pwexpire, sizeof pwexpire, "%c", tptr); 1217283842Sbapt printf("Login Name: %-15s #%-12u Group: %-15s #%u\n" 121820747Sdavidn " Full Name: %s\n" 121920747Sdavidn " Home: %-26.26s Class: %s\n" 122020747Sdavidn " Shell: %-26.26s Office: %s\n" 122120747Sdavidn "Work Phone: %-26.26s Home Phone: %s\n" 122220747Sdavidn "Acc Expire: %-26.26s Pwd Expire: %s\n", 1223283842Sbapt pwd->pw_name, pwd->pw_uid, 1224283842Sbapt grp ? grp->gr_name : "(invalid)", pwd->pw_gid, 122520253Sjoerg uname, pwd->pw_dir, pwd->pw_class, 122620590Sdavidn pwd->pw_shell, office, wphone, hphone, 122720590Sdavidn acexpire, pwexpire); 122844229Sdavidn SETGRENT(); 122920267Sjoerg j = 0; 123044229Sdavidn while ((grp=GETGRENT()) != NULL) 123120267Sjoerg { 123220267Sjoerg int i = 0; 1233262865Sjulian if (grp->gr_mem != NULL) { 1234262865Sjulian while (grp->gr_mem[i] != NULL) 123520267Sjoerg { 1236262865Sjulian if (strcmp(grp->gr_mem[i], pwd->pw_name)==0) 1237262865Sjulian { 1238262865Sjulian printf(j++ == 0 ? " Groups: %s" : ",%s", grp->gr_name); 1239262865Sjulian break; 1240262865Sjulian } 1241262865Sjulian ++i; 124220267Sjoerg } 124320267Sjoerg } 124420267Sjoerg } 124544229Sdavidn ENDGRENT(); 124661957Sache printf("%s", j ? "\n" : ""); 124720253Sjoerg } 124820267Sjoerg return EXIT_SUCCESS; 124920253Sjoerg} 125020253Sjoerg 1251284110Sbaptchar * 1252284110Sbaptpw_checkname(char *name, int gecos) 125320253Sjoerg{ 1254109961Sgad char showch[8]; 1255284110Sbapt const char *badchars, *ch, *showtype; 1256109961Sgad int reject; 125720253Sjoerg 1258109961Sgad ch = name; 1259109961Sgad reject = 0; 1260109961Sgad if (gecos) { 1261109961Sgad /* See if the name is valid as a gecos (comment) field. */ 1262109961Sgad badchars = ":!@"; 1263109961Sgad showtype = "gecos field"; 1264109961Sgad } else { 1265109961Sgad /* See if the name is valid as a userid or group. */ 1266109961Sgad badchars = " ,\t:+&#%$^()!@~*?<>=|\\/\""; 1267109961Sgad showtype = "userid/group name"; 1268109961Sgad /* Userids and groups can not have a leading '-'. */ 1269109961Sgad if (*ch == '-') 1270109961Sgad reject = 1; 127120253Sjoerg } 1272109961Sgad if (!reject) { 1273109961Sgad while (*ch) { 1274109961Sgad if (strchr(badchars, *ch) != NULL || *ch < ' ' || 1275109961Sgad *ch == 127) { 1276109961Sgad reject = 1; 1277109961Sgad break; 1278109961Sgad } 1279109961Sgad /* 8-bit characters are only allowed in GECOS fields */ 1280109961Sgad if (!gecos && (*ch & 0x80)) { 1281109961Sgad reject = 1; 1282109961Sgad break; 1283109961Sgad } 1284109961Sgad ch++; 1285109961Sgad } 1286109961Sgad } 1287109961Sgad /* 1288109961Sgad * A `$' is allowed as the final character for userids and groups, 1289109961Sgad * mainly for the benefit of samba. 1290109961Sgad */ 1291109961Sgad if (reject && !gecos) { 1292109961Sgad if (*ch == '$' && *(ch + 1) == '\0') { 1293109961Sgad reject = 0; 1294109961Sgad ch++; 1295109961Sgad } 1296109961Sgad } 1297109961Sgad if (reject) { 1298109961Sgad snprintf(showch, sizeof(showch), (*ch >= ' ' && *ch < 127) 1299109961Sgad ? "`%c'" : "0x%02x", *ch); 1300228673Sdim errx(EX_DATAERR, "invalid character %s at position %td in %s", 1301109961Sgad showch, (ch - name), showtype); 1302109961Sgad } 1303109961Sgad if (!gecos && (ch - name) > LOGNAMESIZE) 1304109961Sgad errx(EX_DATAERR, "name too long `%s' (max is %d)", name, 1305109961Sgad LOGNAMESIZE); 1306284110Sbapt 1307284110Sbapt return (name); 130820253Sjoerg} 130920253Sjoerg 131020253Sjoerg 131120253Sjoergstatic void 131220253Sjoergrmat(uid_t uid) 131320253Sjoerg{ 131420253Sjoerg DIR *d = opendir("/var/at/jobs"); 131520253Sjoerg 131620253Sjoerg if (d != NULL) { 131720253Sjoerg struct dirent *e; 131820253Sjoerg 131920253Sjoerg while ((e = readdir(d)) != NULL) { 132020253Sjoerg struct stat st; 132120253Sjoerg 132220253Sjoerg if (strncmp(e->d_name, ".lock", 5) != 0 && 132320253Sjoerg stat(e->d_name, &st) == 0 && 132420253Sjoerg !S_ISDIR(st.st_mode) && 132520253Sjoerg st.st_uid == uid) { 132620253Sjoerg char tmp[MAXPATHLEN]; 132720253Sjoerg 1328282700Sbapt snprintf(tmp, sizeof(tmp), "/usr/bin/atrm %s", e->d_name); 132920253Sjoerg system(tmp); 133020253Sjoerg } 133120253Sjoerg } 133220253Sjoerg closedir(d); 133320253Sjoerg } 133420253Sjoerg} 133520747Sdavidn 133620747Sdavidnstatic void 133785145Sachermopie(char const * name) 133820747Sdavidn{ 133985145Sache static const char etcopie[] = "/etc/opiekeys"; 134085145Sache FILE *fp = fopen(etcopie, "r+"); 134120747Sdavidn 134221052Sdavidn if (fp != NULL) { 134321052Sdavidn char tmp[1024]; 134421052Sdavidn off_t atofs = 0; 134521052Sdavidn int length = strlen(name); 134620747Sdavidn 134721052Sdavidn while (fgets(tmp, sizeof tmp, fp) != NULL) { 134821052Sdavidn if (strncmp(name, tmp, length) == 0 && tmp[length]==' ') { 134921052Sdavidn if (fseek(fp, atofs, SEEK_SET) == 0) { 135021052Sdavidn fwrite("#", 1, 1, fp); /* Comment username out */ 135121052Sdavidn } 135221052Sdavidn break; 135320747Sdavidn } 135421052Sdavidn atofs = ftell(fp); 135520747Sdavidn } 135621052Sdavidn /* 135721052Sdavidn * If we got an error of any sort, don't update! 135821052Sdavidn */ 135921052Sdavidn fclose(fp); 136020747Sdavidn } 136120747Sdavidn} 136220747Sdavidn 1363