pw_user.c revision 285412
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 285412 2015-07-11 23:07:17Z 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 54285401Sbaptstatic int pw_userdel(char *name, long id); 55284124Sbaptstatic int print_user(struct passwd * pwd); 56284133Sbaptstatic uid_t pw_uidpolicy(struct userconf * cnf, long id); 57284118Sbaptstatic uid_t pw_gidpolicy(struct cargs * args, char *nam, gid_t prefer); 5820253Sjoergstatic time_t pw_pwdpolicy(struct userconf * cnf, struct cargs * args); 5920253Sjoergstatic time_t pw_exppolicy(struct userconf * cnf, struct cargs * args); 6020253Sjoergstatic char *pw_homepolicy(struct userconf * cnf, struct cargs * args, char const * user); 6120253Sjoergstatic char *pw_shellpolicy(struct userconf * cnf, struct cargs * args, char *newshell); 62285409Sbaptstatic char *pw_password(struct userconf * cnf, char const * user); 6320253Sjoergstatic char *shell_path(char const * path, char *shells[], char *sh); 6420253Sjoergstatic void rmat(uid_t uid); 6585145Sachestatic void rmopie(char const * name); 6620253Sjoerg 67283961Sbaptstatic void 68285403Sbaptcreate_and_populate_homedir(struct passwd *pwd) 69283961Sbapt{ 70283961Sbapt char *homedir, *dotdir; 71284118Sbapt struct userconf *cnf = conf.userconf; 72283961Sbapt 73283961Sbapt homedir = dotdir = NULL; 74283961Sbapt 75284118Sbapt if (conf.rootdir[0] != '\0') { 76284118Sbapt asprintf(&homedir, "%s/%s", conf.rootdir, pwd->pw_dir); 77283961Sbapt if (homedir == NULL) 78283961Sbapt errx(EX_OSERR, "out of memory"); 79284118Sbapt asprintf(&dotdir, "%s/%s", conf.rootdir, cnf->dotdir); 80283961Sbapt } 81283961Sbapt 82283961Sbapt copymkdir(homedir ? homedir : pwd->pw_dir, dotdir ? dotdir: cnf->dotdir, 83283961Sbapt cnf->homemode, pwd->pw_uid, pwd->pw_gid); 84285403Sbapt pw_log(cnf, M_ADD, W_USER, "%s(%u) home %s made", pwd->pw_name, 85283961Sbapt pwd->pw_uid, pwd->pw_dir); 86283961Sbapt} 87283961Sbapt 88285133Sbaptstatic int 89285137Sbaptset_passwd(struct passwd *pwd, bool update) 90285133Sbapt{ 91285133Sbapt int b, istty; 92285133Sbapt struct termios t, n; 93285133Sbapt login_cap_t *lc; 94285133Sbapt char line[_PASSWORD_LEN+1]; 95285133Sbapt char *p; 96285133Sbapt 97285133Sbapt if (conf.fd == '-') { 98285133Sbapt if (!pwd->pw_passwd || *pwd->pw_passwd != '*') { 99285133Sbapt pwd->pw_passwd = "*"; /* No access */ 100285133Sbapt return (1); 101285133Sbapt } 102285133Sbapt return (0); 103285133Sbapt } 104285133Sbapt 105285133Sbapt if ((istty = isatty(conf.fd))) { 106285133Sbapt if (tcgetattr(conf.fd, &t) == -1) 107285133Sbapt istty = 0; 108285133Sbapt else { 109285137Sbapt n = t; 110285133Sbapt n.c_lflag &= ~(ECHO); 111285133Sbapt tcsetattr(conf.fd, TCSANOW, &n); 112285133Sbapt printf("%s%spassword for user %s:", 113285133Sbapt update ? "new " : "", 114285133Sbapt conf.precrypted ? "encrypted " : "", 115285133Sbapt pwd->pw_name); 116285133Sbapt fflush(stdout); 117285133Sbapt } 118285133Sbapt } 119285133Sbapt b = read(conf.fd, line, sizeof(line) - 1); 120285133Sbapt if (istty) { /* Restore state */ 121285133Sbapt tcsetattr(conf.fd, TCSANOW, &t); 122285133Sbapt fputc('\n', stdout); 123285133Sbapt fflush(stdout); 124285133Sbapt } 125285133Sbapt 126285133Sbapt if (b < 0) 127285133Sbapt err(EX_IOERR, "-%c file descriptor", 128285133Sbapt conf.precrypted ? 'H' : 'h'); 129285133Sbapt line[b] = '\0'; 130285133Sbapt if ((p = strpbrk(line, "\r\n")) != NULL) 131285133Sbapt *p = '\0'; 132285133Sbapt if (!*line) 133285133Sbapt errx(EX_DATAERR, "empty password read on file descriptor %d", 134285133Sbapt conf.fd); 135285133Sbapt if (conf.precrypted) { 136285133Sbapt if (strchr(line, ':') != NULL) 137285137Sbapt errx(EX_DATAERR, "bad encrypted password"); 138285133Sbapt pwd->pw_passwd = line; 139285133Sbapt } else { 140285133Sbapt lc = login_getpwclass(pwd); 141285133Sbapt if (lc == NULL || 142285133Sbapt login_setcryptfmt(lc, "sha512", NULL) == NULL) 143285133Sbapt warn("setting crypt(3) format"); 144285133Sbapt login_close(lc); 145285133Sbapt pwd->pw_passwd = pw_pwcrypt(line); 146285133Sbapt } 147285133Sbapt return (1); 148285133Sbapt} 149285133Sbapt 150285395Sbaptint 151285395Sbaptpw_usernext(struct userconf *cnf, bool quiet) 152285395Sbapt{ 153285395Sbapt uid_t next = pw_uidpolicy(cnf, -1); 154285395Sbapt 155285395Sbapt if (quiet) 156285395Sbapt return (next); 157285395Sbapt 158285395Sbapt printf("%u:", next); 159285395Sbapt pw_groupnext(cnf, quiet); 160285395Sbapt 161285395Sbapt return (EXIT_SUCCESS); 162285395Sbapt} 163285395Sbapt 164285398Sbaptstatic int 165285398Sbaptpw_usershow(char *name, long id, struct passwd *fakeuser) 166285398Sbapt{ 167285398Sbapt struct passwd *pwd = NULL; 168285398Sbapt 169285398Sbapt if (id < 0 && name == NULL && !conf.all) 170285398Sbapt errx(EX_DATAERR, "username or id or '-a' required"); 171285398Sbapt 172285398Sbapt if (conf.all) { 173285398Sbapt SETPWENT(); 174285398Sbapt while ((pwd = GETPWENT()) != NULL) 175285398Sbapt print_user(pwd); 176285398Sbapt ENDPWENT(); 177285398Sbapt return (EXIT_SUCCESS); 178285398Sbapt } 179285398Sbapt 180285398Sbapt pwd = (name != NULL) ? GETPWNAM(pw_checkname(name, 0)) : GETPWUID(id); 181285398Sbapt if (pwd == NULL) { 182285398Sbapt if (conf.force) { 183285398Sbapt pwd = fakeuser; 184285398Sbapt } else { 185285398Sbapt if (name == NULL) 186285398Sbapt errx(EX_NOUSER, "no such uid `%ld'", id); 187285398Sbapt errx(EX_NOUSER, "no such user `%s'", name); 188285398Sbapt } 189285398Sbapt } 190285398Sbapt 191285398Sbapt return (print_user(pwd)); 192285398Sbapt} 193285398Sbapt 194285405Sbaptstatic void 195285405Sbaptperform_chgpwent(const char *name, struct passwd *pwd) 196285405Sbapt{ 197285405Sbapt int rc; 198285405Sbapt 199285405Sbapt rc = chgpwent(name, pwd); 200285405Sbapt if (rc == -1) 201285405Sbapt errx(EX_IOERR, "user '%s' does not exist (NIS?)", pwd->pw_name); 202285405Sbapt else if (rc != 0) 203285405Sbapt err(EX_IOERR, "passwd file update"); 204285405Sbapt 205285405Sbapt if (conf.userconf->nispasswd && *conf.userconf->nispasswd == '/') { 206285405Sbapt rc = chgnispwent(conf.userconf->nispasswd, name, pwd); 207285405Sbapt if (rc == -1) 208285405Sbapt warn("User '%s' not found in NIS passwd", pwd->pw_name); 209285405Sbapt else 210285405Sbapt warn("NIS passwd update"); 211285405Sbapt /* NOTE: NIS-only update errors are not fatal */ 212285405Sbapt } 213285405Sbapt} 214285405Sbapt 215285405Sbapt/* 216285405Sbapt * The M_LOCK and M_UNLOCK functions simply add or remove 217285405Sbapt * a "*LOCKED*" prefix from in front of the password to 218285405Sbapt * prevent it decoding correctly, and therefore prevents 219285405Sbapt * access. Of course, this only prevents access via 220285405Sbapt * password authentication (not ssh, kerberos or any 221285405Sbapt * other method that does not use the UNIX password) but 222285405Sbapt * that is a known limitation. 223285405Sbapt */ 224285405Sbaptstatic int 225285405Sbaptpw_userlock(char *name, long id, int mode) 226285405Sbapt{ 227285405Sbapt struct passwd *pwd = NULL; 228285405Sbapt char *passtmp = NULL; 229285405Sbapt bool locked = false; 230285405Sbapt 231285405Sbapt if (id < 0 && name == NULL) 232285405Sbapt errx(EX_DATAERR, "username or id required"); 233285405Sbapt 234285405Sbapt pwd = (name != NULL) ? GETPWNAM(pw_checkname(name, 0)) : GETPWUID(id); 235285405Sbapt if (pwd == NULL) { 236285405Sbapt if (name == NULL) 237285405Sbapt errx(EX_NOUSER, "no such uid `%ld'", id); 238285405Sbapt errx(EX_NOUSER, "no such user `%s'", name); 239285405Sbapt } 240285405Sbapt 241285405Sbapt if (name == NULL) 242285405Sbapt name = pwd->pw_name; 243285405Sbapt 244285405Sbapt if (strncmp(pwd->pw_passwd, locked_str, sizeof(locked_str) -1) == 0) 245285405Sbapt locked = true; 246285405Sbapt if (mode == M_LOCK && locked) 247285405Sbapt errx(EX_DATAERR, "user '%s' is already locked", pwd->pw_name); 248285405Sbapt if (mode == M_UNLOCK && !locked) 249285405Sbapt errx(EX_DATAERR, "user '%s' is not locked", pwd->pw_name); 250285405Sbapt 251285405Sbapt if (mode == M_LOCK) { 252285405Sbapt asprintf(&passtmp, "%s%s", locked_str, pwd->pw_passwd); 253285405Sbapt if (passtmp == NULL) /* disaster */ 254285405Sbapt errx(EX_UNAVAILABLE, "out of memory"); 255285405Sbapt pwd->pw_passwd = passtmp; 256285405Sbapt } else { 257285405Sbapt pwd->pw_passwd += sizeof(locked_str)-1; 258285405Sbapt } 259285405Sbapt 260285405Sbapt perform_chgpwent(name, pwd); 261285405Sbapt free(passtmp); 262285405Sbapt 263285405Sbapt return (EXIT_SUCCESS); 264285405Sbapt} 265285405Sbapt 26620253Sjoerg/*- 26720253Sjoerg * -C config configuration file 26820253Sjoerg * -q quiet operation 26920253Sjoerg * -n name login name 27020253Sjoerg * -u uid user id 27120253Sjoerg * -c comment user name/comment 27220253Sjoerg * -d directory home directory 27320253Sjoerg * -e date account expiry date 27420253Sjoerg * -p date password expiry date 27520253Sjoerg * -g grp primary group 27620253Sjoerg * -G grp1,grp2 additional groups 27720253Sjoerg * -m [ -k dir ] create and set up home 27820253Sjoerg * -s shell name of login shell 27920253Sjoerg * -o duplicate uid ok 28020253Sjoerg * -L class user class 28120253Sjoerg * -l name new login name 28220253Sjoerg * -h fd password filehandle 283124382Siedowse * -H fd encrypted password filehandle 28420253Sjoerg * -F force print or add 28520253Sjoerg * Setting defaults: 28620253Sjoerg * -D set user defaults 28720253Sjoerg * -b dir default home root dir 28820253Sjoerg * -e period default expiry period 28920253Sjoerg * -p period default password change period 29020253Sjoerg * -g group default group 29120253Sjoerg * -G grp1,grp2.. default additional groups 29220253Sjoerg * -L class default login class 29320253Sjoerg * -k dir default home skeleton 29420253Sjoerg * -s shell default shell 29520253Sjoerg * -w method default password method 29620253Sjoerg */ 29720253Sjoerg 29820253Sjoergint 299284128Sbaptpw_user(int mode, char *name, long id, struct cargs * args) 30020253Sjoerg{ 30152527Sdavidn int rc, edited = 0; 30220253Sjoerg char *p = NULL; 30320253Sjoerg struct carg *arg; 30420253Sjoerg struct passwd *pwd = NULL; 30520253Sjoerg struct group *grp; 30620253Sjoerg struct stat st; 307284118Sbapt struct userconf *cnf; 30820747Sdavidn char line[_PASSWORD_LEN+1]; 309283961Sbapt char path[MAXPATHLEN]; 31082868Sdd FILE *fp; 311167919Sle char *dmode_c; 312167919Sle void *set = NULL; 31320253Sjoerg 31420253Sjoerg static struct passwd fakeuser = 31520253Sjoerg { 316285398Sbapt "nouser", 31720253Sjoerg "*", 31820253Sjoerg -1, 31920253Sjoerg -1, 32020253Sjoerg 0, 32120253Sjoerg "", 32220253Sjoerg "User &", 32356000Sdavidn "/nonexistent", 32420253Sjoerg "/bin/sh", 32520253Sjoerg 0 32656000Sdavidn#if defined(__FreeBSD__) 32756000Sdavidn ,0 32856000Sdavidn#endif 32920253Sjoerg }; 33020253Sjoerg 331284118Sbapt cnf = conf.userconf; 33252512Sdavidn 333284149Sbapt if (mode == M_NEXT) 334285396Sbapt return (pw_usernext(cnf, conf.quiet)); 33520267Sjoerg 336285398Sbapt if (mode == M_PRINT) 337285398Sbapt return (pw_usershow(name, id, &fakeuser)); 338285398Sbapt 339285401Sbapt if (mode == M_DELETE) 340285401Sbapt return (pw_userdel(name, id)); 341285401Sbapt 342285405Sbapt if (mode == M_LOCK || mode == M_UNLOCK) 343285405Sbapt return (pw_userlock(name, id, mode)); 344285405Sbapt 34520267Sjoerg /* 34620253Sjoerg * We can do all of the common legwork here 34720253Sjoerg */ 34820253Sjoerg 34920253Sjoerg if ((arg = getarg(args, 'b')) != NULL) { 35020267Sjoerg cnf->home = arg->val; 35120253Sjoerg } 35221052Sdavidn 353167919Sle if ((arg = getarg(args, 'M')) != NULL) { 354167919Sle dmode_c = arg->val; 355167919Sle if ((set = setmode(dmode_c)) == NULL) 356167919Sle errx(EX_DATAERR, "invalid directory creation mode '%s'", 357167919Sle dmode_c); 358219408Sjkim cnf->homemode = getmode(set, _DEF_DIRMODE); 359167919Sle free(set); 360168044Sle } 361167919Sle 36221052Sdavidn /* 36321052Sdavidn * If we'll need to use it or we're updating it, 36421052Sdavidn * then create the base home directory if necessary 36521052Sdavidn */ 366224535Sdelphij if (arg != NULL || getarg(args, 'm') != NULL) { 36721052Sdavidn int l = strlen(cnf->home); 36821052Sdavidn 36921052Sdavidn if (l > 1 && cnf->home[l-1] == '/') /* Shave off any trailing path delimiter */ 37021052Sdavidn cnf->home[--l] = '\0'; 37121052Sdavidn 37221052Sdavidn if (l < 2 || *cnf->home != '/') /* Check for absolute path name */ 37330259Scharnier errx(EX_DATAERR, "invalid base directory for home '%s'", cnf->home); 37421052Sdavidn 37521052Sdavidn if (stat(cnf->home, &st) == -1) { 37621052Sdavidn char dbuf[MAXPATHLEN]; 37721052Sdavidn 37821242Sdavidn /* 37921242Sdavidn * This is a kludge especially for Joerg :) 38021242Sdavidn * If the home directory would be created in the root partition, then 38121242Sdavidn * we really create it under /usr which is likely to have more space. 38221242Sdavidn * But we create a symlink from cnf->home -> "/usr" -> cnf->home 38321242Sdavidn */ 38421242Sdavidn if (strchr(cnf->home+1, '/') == NULL) { 385282683Sbapt snprintf(dbuf, MAXPATHLEN, "/usr%s", cnf->home); 386219408Sjkim if (mkdir(dbuf, _DEF_DIRMODE) != -1 || errno == EEXIST) { 38721242Sdavidn chown(dbuf, 0, 0); 388148584Spjd /* 389148584Spjd * Skip first "/" and create symlink: 390148584Spjd * /home -> usr/home 391148584Spjd */ 392148584Spjd symlink(dbuf+1, cnf->home); 39321242Sdavidn } 39421242Sdavidn /* If this falls, fall back to old method */ 39521242Sdavidn } 396130633Srobert strlcpy(dbuf, cnf->home, sizeof(dbuf)); 397130633Srobert p = dbuf; 39821242Sdavidn if (stat(dbuf, &st) == -1) { 399252377Skientzle while ((p = strchr(p + 1, '/')) != NULL) { 40021242Sdavidn *p = '\0'; 40121242Sdavidn if (stat(dbuf, &st) == -1) { 402219408Sjkim if (mkdir(dbuf, _DEF_DIRMODE) == -1) 403285406Sbapt err(EX_OSFILE, "mkdir '%s'", dbuf); 40421242Sdavidn chown(dbuf, 0, 0); 40521242Sdavidn } else if (!S_ISDIR(st.st_mode)) 40630259Scharnier errx(EX_OSFILE, "'%s' (root home parent) is not a directory", dbuf); 40721242Sdavidn *p = '/'; 40821242Sdavidn } 40921052Sdavidn } 41021242Sdavidn if (stat(dbuf, &st) == -1) { 411285406Sbapt if (mkdir(dbuf, _DEF_DIRMODE) == -1) 412285406Sbapt err(EX_OSFILE, "mkdir '%s'", dbuf); 41321052Sdavidn chown(dbuf, 0, 0); 41421052Sdavidn } 41521052Sdavidn } else if (!S_ISDIR(st.st_mode)) 41630259Scharnier errx(EX_OSFILE, "root home `%s' is not a directory", cnf->home); 41721052Sdavidn } 41821052Sdavidn 41920253Sjoerg if ((arg = getarg(args, 'e')) != NULL) 42020253Sjoerg cnf->expire_days = atoi(arg->val); 42120253Sjoerg 42221330Sdavidn if ((arg = getarg(args, 'y')) != NULL) 42321330Sdavidn cnf->nispasswd = arg->val; 42421330Sdavidn 42520253Sjoerg if ((arg = getarg(args, 'p')) != NULL && arg->val) 42620253Sjoerg cnf->password_days = atoi(arg->val); 42720253Sjoerg 42820253Sjoerg if ((arg = getarg(args, 'g')) != NULL) { 42963596Sdavidn if (!*(p = arg->val)) /* Handle empty group list specially */ 43063596Sdavidn cnf->default_group = ""; 43163596Sdavidn else { 43263596Sdavidn if ((grp = GETGRNAM(p)) == NULL) { 43363596Sdavidn if (!isdigit((unsigned char)*p) || (grp = GETGRGID((gid_t) atoi(p))) == NULL) 43463596Sdavidn errx(EX_NOUSER, "group `%s' does not exist", p); 43563596Sdavidn } 43663596Sdavidn cnf->default_group = newstr(grp->gr_name); 43720253Sjoerg } 43820253Sjoerg } 43920253Sjoerg if ((arg = getarg(args, 'L')) != NULL) 440284110Sbapt cnf->default_class = pw_checkname(arg->val, 0); 44120253Sjoerg 44220253Sjoerg if ((arg = getarg(args, 'G')) != NULL && arg->val) { 44320747Sdavidn for (p = strtok(arg->val, ", \t"); p != NULL; p = strtok(NULL, ", \t")) { 44444229Sdavidn if ((grp = GETGRNAM(p)) == NULL) { 44561957Sache if (!isdigit((unsigned char)*p) || (grp = GETGRGID((gid_t) atoi(p))) == NULL) 44630259Scharnier errx(EX_NOUSER, "group `%s' does not exist", p); 44720253Sjoerg } 448285412Sbapt sl_add(cnf->groups, newstr(grp->gr_name)); 44920253Sjoerg } 45020253Sjoerg } 45152527Sdavidn 45220253Sjoerg if ((arg = getarg(args, 'k')) != NULL) { 45326088Sdavidn if (stat(cnf->dotdir = arg->val, &st) == -1 || !S_ISDIR(st.st_mode)) 45430259Scharnier errx(EX_OSFILE, "skeleton `%s' is not a directory or does not exist", cnf->dotdir); 45520253Sjoerg } 45652527Sdavidn 45720253Sjoerg if ((arg = getarg(args, 's')) != NULL) 45820253Sjoerg cnf->shell_default = arg->val; 45920253Sjoerg 46063600Sdavidn if ((arg = getarg(args, 'w')) != NULL) 46163600Sdavidn cnf->default_password = boolean_val(arg->val, cnf->default_password); 46220253Sjoerg if (mode == M_ADD && getarg(args, 'D')) { 463284135Sbapt if (name != NULL) 46430259Scharnier errx(EX_DATAERR, "can't combine `-D' with `-n name'"); 46520253Sjoerg if ((arg = getarg(args, 'u')) != NULL && (p = strtok(arg->val, ", \t")) != NULL) { 46620253Sjoerg if ((cnf->min_uid = (uid_t) atoi(p)) == 0) 46720253Sjoerg cnf->min_uid = 1000; 46820253Sjoerg if ((p = strtok(NULL, " ,\t")) == NULL || (cnf->max_uid = (uid_t) atoi(p)) < cnf->min_uid) 46920253Sjoerg cnf->max_uid = 32000; 47020253Sjoerg } 47120253Sjoerg if ((arg = getarg(args, 'i')) != NULL && (p = strtok(arg->val, ", \t")) != NULL) { 47220253Sjoerg if ((cnf->min_gid = (gid_t) atoi(p)) == 0) 47320253Sjoerg cnf->min_gid = 1000; 47420253Sjoerg if ((p = strtok(NULL, " ,\t")) == NULL || (cnf->max_gid = (gid_t) atoi(p)) < cnf->min_gid) 47520253Sjoerg cnf->max_gid = 32000; 47620253Sjoerg } 47720253Sjoerg 478284135Sbapt if (write_userconfig(conf.config)) 479284135Sbapt return (EXIT_SUCCESS); 480283814Sbapt err(EX_IOERR, "config udpate"); 48120253Sjoerg } 48252527Sdavidn 483284128Sbapt if (name != NULL) 484284128Sbapt pwd = GETPWNAM(pw_checkname(name, 0)); 48520253Sjoerg 486284128Sbapt if (id < 0 && name == NULL) 487284128Sbapt errx(EX_DATAERR, "user name or id required"); 48820253Sjoerg 48920253Sjoerg /* 490285401Sbapt * Update require that the user exists 49120253Sjoerg */ 492285405Sbapt if (mode == M_UPDATE) { 49352527Sdavidn 494284128Sbapt if (name == NULL && pwd == NULL) /* Try harder */ 495284128Sbapt pwd = GETPWUID(id); 49620253Sjoerg 49720253Sjoerg if (pwd == NULL) { 498284128Sbapt if (name == NULL) 499284128Sbapt errx(EX_NOUSER, "no such uid `%ld'", id); 500284128Sbapt errx(EX_NOUSER, "no such user `%s'", name); 50120253Sjoerg } 50252527Sdavidn 503284128Sbapt if (name == NULL) 504284128Sbapt name = pwd->pw_name; 50520253Sjoerg 50620253Sjoerg /* 50720253Sjoerg * The rest is edit code 50820253Sjoerg */ 509284129Sbapt if (conf.newname != NULL) { 51020253Sjoerg if (strcmp(pwd->pw_name, "root") == 0) 51130259Scharnier errx(EX_DATAERR, "can't rename `root' account"); 512284129Sbapt pwd->pw_name = pw_checkname(conf.newname, 0); 51352527Sdavidn edited = 1; 51420253Sjoerg } 51552527Sdavidn 516284133Sbapt if (id > 0 && isdigit((unsigned char)*arg->val)) { 517284133Sbapt pwd->pw_uid = (uid_t)id; 51852527Sdavidn edited = 1; 51920253Sjoerg if (pwd->pw_uid != 0 && strcmp(pwd->pw_name, "root") == 0) 52030259Scharnier errx(EX_DATAERR, "can't change uid of `root' account"); 52120253Sjoerg if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0) 52230259Scharnier warnx("WARNING: account `%s' will have a uid of 0 (superuser access!)", pwd->pw_name); 52320253Sjoerg } 52420253Sjoerg 52552527Sdavidn if ((arg = getarg(args, 'g')) != NULL && pwd->pw_uid != 0) { /* Already checked this */ 52652527Sdavidn gid_t newgid = (gid_t) GETGRNAM(cnf->default_group)->gr_gid; 52752527Sdavidn if (newgid != pwd->pw_gid) { 52852527Sdavidn edited = 1; 52961762Sdavidn pwd->pw_gid = newgid; 53052527Sdavidn } 53152527Sdavidn } 53252527Sdavidn 53320253Sjoerg if ((arg = getarg(args, 'p')) != NULL) { 53452527Sdavidn if (*arg->val == '\0' || strcmp(arg->val, "0") == 0) { 53552527Sdavidn if (pwd->pw_change != 0) { 53652527Sdavidn pwd->pw_change = 0; 53752527Sdavidn edited = 1; 53852527Sdavidn } 53952527Sdavidn } 54020253Sjoerg else { 54120253Sjoerg time_t now = time(NULL); 54220253Sjoerg time_t expire = parse_date(now, arg->val); 54320253Sjoerg 54452527Sdavidn if (pwd->pw_change != expire) { 54552527Sdavidn pwd->pw_change = expire; 54652527Sdavidn edited = 1; 54752527Sdavidn } 54820253Sjoerg } 54920253Sjoerg } 55052527Sdavidn 55120267Sjoerg if ((arg = getarg(args, 'e')) != NULL) { 55252527Sdavidn if (*arg->val == '\0' || strcmp(arg->val, "0") == 0) { 55352527Sdavidn if (pwd->pw_expire != 0) { 55452527Sdavidn pwd->pw_expire = 0; 55552527Sdavidn edited = 1; 55652527Sdavidn } 55752527Sdavidn } 55820253Sjoerg else { 55920253Sjoerg time_t now = time(NULL); 56020253Sjoerg time_t expire = parse_date(now, arg->val); 56120253Sjoerg 56252527Sdavidn if (pwd->pw_expire != expire) { 56352527Sdavidn pwd->pw_expire = expire; 56452527Sdavidn edited = 1; 56552527Sdavidn } 56620253Sjoerg } 56720253Sjoerg } 56820253Sjoerg 56952527Sdavidn if ((arg = getarg(args, 's')) != NULL) { 57052527Sdavidn char *shell = shell_path(cnf->shelldir, cnf->shells, arg->val); 57152527Sdavidn if (shell == NULL) 57252527Sdavidn shell = ""; 57352527Sdavidn if (strcmp(shell, pwd->pw_shell) != 0) { 57452527Sdavidn pwd->pw_shell = shell; 57552527Sdavidn edited = 1; 57652527Sdavidn } 57752527Sdavidn } 57820253Sjoerg 57952527Sdavidn if (getarg(args, 'L')) { 58052527Sdavidn if (cnf->default_class == NULL) 58152527Sdavidn cnf->default_class = ""; 58252527Sdavidn if (strcmp(pwd->pw_class, cnf->default_class) != 0) { 58352527Sdavidn pwd->pw_class = cnf->default_class; 58452527Sdavidn edited = 1; 58552527Sdavidn } 58652527Sdavidn } 58752527Sdavidn 58820747Sdavidn if ((arg = getarg(args, 'd')) != NULL) { 589130629Srobert if (strcmp(pwd->pw_dir, arg->val)) 590130629Srobert edited = 1; 59120747Sdavidn if (stat(pwd->pw_dir = arg->val, &st) == -1) { 59220747Sdavidn if (getarg(args, 'm') == NULL && strcmp(pwd->pw_dir, "/nonexistent") != 0) 59330259Scharnier warnx("WARNING: home `%s' does not exist", pwd->pw_dir); 59420747Sdavidn } else if (!S_ISDIR(st.st_mode)) 59530259Scharnier warnx("WARNING: home `%s' is not a directory", pwd->pw_dir); 59620747Sdavidn } 59720747Sdavidn 598285137Sbapt if ((arg = getarg(args, 'w')) != NULL && conf.fd == -1) { 59964918Sgreen login_cap_t *lc; 60064918Sgreen 60164918Sgreen lc = login_getpwclass(pwd); 60264918Sgreen if (lc == NULL || 603252688Sdes login_setcryptfmt(lc, "sha512", NULL) == NULL) 60464918Sgreen warn("setting crypt(3) format"); 60564918Sgreen login_close(lc); 606285409Sbapt pwd->pw_passwd = pw_password(cnf, pwd->pw_name); 60752527Sdavidn edited = 1; 60852527Sdavidn } 60920267Sjoerg 61020253Sjoerg } else { 61164918Sgreen login_cap_t *lc; 61252527Sdavidn 61352527Sdavidn /* 61452527Sdavidn * Add code 61552527Sdavidn */ 61652527Sdavidn 617284128Sbapt if (name == NULL) /* Required */ 61830259Scharnier errx(EX_DATAERR, "login name required"); 619284128Sbapt else if ((pwd = GETPWNAM(name)) != NULL) /* Exists */ 620284128Sbapt errx(EX_DATAERR, "login name `%s' already exists", name); 62120253Sjoerg 62220253Sjoerg /* 62320253Sjoerg * Now, set up defaults for a new user 62420253Sjoerg */ 62520253Sjoerg pwd = &fakeuser; 626284128Sbapt pwd->pw_name = name; 62720253Sjoerg pwd->pw_class = cnf->default_class ? cnf->default_class : ""; 628284133Sbapt pwd->pw_uid = pw_uidpolicy(cnf, id); 629284118Sbapt pwd->pw_gid = pw_gidpolicy(args, pwd->pw_name, (gid_t) pwd->pw_uid); 63020253Sjoerg pwd->pw_change = pw_pwdpolicy(cnf, args); 63120253Sjoerg pwd->pw_expire = pw_exppolicy(cnf, args); 63220253Sjoerg pwd->pw_dir = pw_homepolicy(cnf, args, pwd->pw_name); 63320253Sjoerg pwd->pw_shell = pw_shellpolicy(cnf, args, NULL); 63464918Sgreen lc = login_getpwclass(pwd); 635272833Sdes if (lc == NULL || login_setcryptfmt(lc, "sha512", NULL) == NULL) 63664918Sgreen warn("setting crypt(3) format"); 63764918Sgreen login_close(lc); 638285409Sbapt pwd->pw_passwd = pw_password(cnf, pwd->pw_name); 63952527Sdavidn edited = 1; 64020253Sjoerg 64120253Sjoerg if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0) 64230259Scharnier warnx("WARNING: new account `%s' has a uid of 0 (superuser access!)", pwd->pw_name); 64320253Sjoerg } 64420253Sjoerg 64520253Sjoerg /* 64620253Sjoerg * Shared add/edit code 64720253Sjoerg */ 648285408Sbapt if (conf.gecos != NULL) { 649285408Sbapt if (strcmp(pwd->pw_gecos, conf.gecos) != 0) { 650285408Sbapt pwd->pw_gecos = conf.gecos; 65152527Sdavidn edited = 1; 65252527Sdavidn } 65352527Sdavidn } 65420253Sjoerg 655285133Sbapt if (conf.fd != -1) 656285137Sbapt edited = set_passwd(pwd, mode == M_UPDATE); 65720253Sjoerg 65820267Sjoerg /* 65920267Sjoerg * Special case: -N only displays & exits 66020267Sjoerg */ 661284121Sbapt if (conf.dryrun) 662284126Sbapt return print_user(pwd); 66320267Sjoerg 66421330Sdavidn if (mode == M_ADD) { 66552527Sdavidn edited = 1; /* Always */ 66652502Sdavidn rc = addpwent(pwd); 667283814Sbapt if (rc == -1) 668283814Sbapt errx(EX_IOERR, "user '%s' already exists", 669283814Sbapt pwd->pw_name); 670283814Sbapt else if (rc != 0) 671283814Sbapt err(EX_IOERR, "passwd file update"); 67252502Sdavidn if (cnf->nispasswd && *cnf->nispasswd=='/') { 67352502Sdavidn rc = addnispwent(cnf->nispasswd, pwd); 67452502Sdavidn if (rc == -1) 67552502Sdavidn warnx("User '%s' already exists in NIS passwd", pwd->pw_name); 67652502Sdavidn else 67756000Sdavidn warn("NIS passwd update"); 67852502Sdavidn /* NOTE: we treat NIS-only update errors as non-fatal */ 67952502Sdavidn } 680285405Sbapt } else if (mode == M_UPDATE && edited) /* Only updated this if required */ 681285405Sbapt perform_chgpwent(name, pwd); 68221330Sdavidn 68320253Sjoerg /* 68420253Sjoerg * Ok, user is created or changed - now edit group file 68520253Sjoerg */ 68620253Sjoerg 687242349Sbapt if (mode == M_ADD || getarg(args, 'G') != NULL) { 688285412Sbapt int j; 689285412Sbapt size_t i; 690273779Sbapt /* First remove the user from all group */ 691273779Sbapt SETGRENT(); 692273779Sbapt while ((grp = GETGRENT()) != NULL) { 693273779Sbapt char group[MAXLOGNAME]; 694273779Sbapt if (grp->gr_mem == NULL) 695273779Sbapt continue; 696273779Sbapt for (i = 0; grp->gr_mem[i] != NULL; i++) { 697273779Sbapt if (strcmp(grp->gr_mem[i] , pwd->pw_name) != 0) 698273779Sbapt continue; 699273779Sbapt for (j = i; grp->gr_mem[j] != NULL ; j++) 700273779Sbapt grp->gr_mem[j] = grp->gr_mem[j+1]; 701273779Sbapt strlcpy(group, grp->gr_name, MAXLOGNAME); 702273779Sbapt chggrent(group, grp); 703273779Sbapt } 704273779Sbapt } 705273779Sbapt ENDGRENT(); 706273779Sbapt 707273779Sbapt /* now add to group where needed */ 708285412Sbapt for (i = 0; i < cnf->groups->sl_cur; i++) { 709285412Sbapt grp = GETGRNAM(cnf->groups->sl_str[i]); 710244737Sbapt grp = gr_add(grp, pwd->pw_name); 711244737Sbapt /* 712244737Sbapt * grp can only be NULL in 2 cases: 713244737Sbapt * - the new member is already a member 714244737Sbapt * - a problem with memory occurs 715244737Sbapt * in both cases we want to skip now. 716244737Sbapt */ 717244737Sbapt if (grp == NULL) 718242349Sbapt continue; 719285412Sbapt chggrent(grp->gr_name, grp); 720245114Smjg free(grp); 721242349Sbapt } 722242349Sbapt } 723242349Sbapt 724242349Sbapt 72561759Sdavidn /* go get a current version of pwd */ 726284128Sbapt pwd = GETPWNAM(name); 72761759Sdavidn if (pwd == NULL) { 72861759Sdavidn /* This will fail when we rename, so special case that */ 729284129Sbapt if (mode == M_UPDATE && conf.newname != NULL) { 730284129Sbapt name = conf.newname; /* update new name */ 731284128Sbapt pwd = GETPWNAM(name); /* refetch renamed rec */ 73261759Sdavidn } 73361759Sdavidn } 73461759Sdavidn if (pwd == NULL) /* can't go on without this */ 735284128Sbapt errx(EX_NOUSER, "user '%s' disappeared during update", name); 73620253Sjoerg 73744229Sdavidn grp = GETGRGID(pwd->pw_gid); 738283842Sbapt pw_log(cnf, mode, W_USER, "%s(%u):%s(%u):%s:%s:%s", 739283842Sbapt pwd->pw_name, pwd->pw_uid, 740283842Sbapt grp ? grp->gr_name : "unknown", (grp ? grp->gr_gid : (uid_t)-1), 74120253Sjoerg pwd->pw_gecos, pwd->pw_dir, pwd->pw_shell); 74220253Sjoerg 74320253Sjoerg /* 74420253Sjoerg * If adding, let's touch and chown the user's mail file. This is not 74520253Sjoerg * strictly necessary under BSD with a 0755 maildir but it also 74620253Sjoerg * doesn't hurt anything to create the empty mailfile 74720253Sjoerg */ 74820253Sjoerg if (mode == M_ADD) { 749283961Sbapt if (PWALTDIR() != PWF_ALT) { 750283961Sbapt arg = getarg(args, 'R'); 751283961Sbapt snprintf(path, sizeof(path), "%s%s/%s", 752283961Sbapt arg ? arg->val : "", _PATH_MAILDIR, pwd->pw_name); 753283961Sbapt close(open(path, O_RDWR | O_CREAT, 0600)); /* Preserve contents & 75444229Sdavidn * mtime */ 755283961Sbapt chown(path, pwd->pw_uid, pwd->pw_gid); 75620253Sjoerg } 75720253Sjoerg } 75852527Sdavidn 75920253Sjoerg /* 76082868Sdd * Let's create and populate the user's home directory. Note 76120253Sjoerg * that this also `works' for editing users if -m is used, but 76220253Sjoerg * existing files will *not* be overwritten. 76320253Sjoerg */ 764283961Sbapt if (PWALTDIR() != PWF_ALT && getarg(args, 'm') != NULL && pwd->pw_dir && 765283961Sbapt *pwd->pw_dir == '/' && pwd->pw_dir[1]) 766285403Sbapt create_and_populate_homedir(pwd); 76752527Sdavidn 76882868Sdd /* 76982868Sdd * Finally, send mail to the new user as well, if we are asked to 77082868Sdd */ 77182868Sdd if (mode == M_ADD && !PWALTDIR() && cnf->newmail && *cnf->newmail && (fp = fopen(cnf->newmail, "r")) != NULL) { 77282868Sdd FILE *pfp = popen(_PATH_SENDMAIL " -t", "w"); 77382868Sdd 77482868Sdd if (pfp == NULL) 77582868Sdd warn("sendmail"); 77682868Sdd else { 77782868Sdd fprintf(pfp, "From: root\n" "To: %s\n" "Subject: Welcome!\n\n", pwd->pw_name); 77882868Sdd while (fgets(line, sizeof(line), fp) != NULL) { 77982868Sdd /* Do substitutions? */ 78082868Sdd fputs(line, pfp); 78182868Sdd } 78282868Sdd pclose(pfp); 783283842Sbapt pw_log(cnf, mode, W_USER, "%s(%u) new user mail sent", 784283842Sbapt pwd->pw_name, pwd->pw_uid); 78582868Sdd } 78682868Sdd fclose(fp); 78782868Sdd } 78882868Sdd 78920267Sjoerg return EXIT_SUCCESS; 79020253Sjoerg} 79120253Sjoerg 79220253Sjoerg 79320253Sjoergstatic uid_t 794284133Sbaptpw_uidpolicy(struct userconf * cnf, long id) 79520253Sjoerg{ 79620253Sjoerg struct passwd *pwd; 79720253Sjoerg uid_t uid = (uid_t) - 1; 79820253Sjoerg 79920253Sjoerg /* 80020253Sjoerg * Check the given uid, if any 80120253Sjoerg */ 802284133Sbapt if (id > 0) { 803284133Sbapt uid = (uid_t) id; 80420253Sjoerg 805284133Sbapt if ((pwd = GETPWUID(uid)) != NULL && conf.checkduplicate) 806283842Sbapt errx(EX_DATAERR, "uid `%u' has already been allocated", pwd->pw_uid); 80720253Sjoerg } else { 80820253Sjoerg struct bitmap bm; 80920253Sjoerg 81020253Sjoerg /* 81120253Sjoerg * We need to allocate the next available uid under one of 81220253Sjoerg * two policies a) Grab the first unused uid b) Grab the 81320253Sjoerg * highest possible unused uid 81420253Sjoerg */ 81520253Sjoerg if (cnf->min_uid >= cnf->max_uid) { /* Sanity 81620253Sjoerg * claus^H^H^H^Hheck */ 81720253Sjoerg cnf->min_uid = 1000; 81820253Sjoerg cnf->max_uid = 32000; 81920253Sjoerg } 82020253Sjoerg bm = bm_alloc(cnf->max_uid - cnf->min_uid + 1); 82120253Sjoerg 82220253Sjoerg /* 82320253Sjoerg * Now, let's fill the bitmap from the password file 82420253Sjoerg */ 82544229Sdavidn SETPWENT(); 82644229Sdavidn while ((pwd = GETPWENT()) != NULL) 82744229Sdavidn if (pwd->pw_uid >= (uid_t) cnf->min_uid && pwd->pw_uid <= (uid_t) cnf->max_uid) 82820253Sjoerg bm_setbit(&bm, pwd->pw_uid - cnf->min_uid); 82944229Sdavidn ENDPWENT(); 83020253Sjoerg 83120253Sjoerg /* 83220253Sjoerg * Then apply the policy, with fallback to reuse if necessary 83320253Sjoerg */ 83420253Sjoerg if (cnf->reuse_uids || (uid = (uid_t) (bm_lastset(&bm) + cnf->min_uid + 1)) > cnf->max_uid) 83520253Sjoerg uid = (uid_t) (bm_firstunset(&bm) + cnf->min_uid); 83620253Sjoerg 83720253Sjoerg /* 83820253Sjoerg * Another sanity check 83920253Sjoerg */ 84020253Sjoerg if (uid < cnf->min_uid || uid > cnf->max_uid) 84130259Scharnier errx(EX_SOFTWARE, "unable to allocate a new uid - range fully used"); 84220253Sjoerg bm_dealloc(&bm); 84320253Sjoerg } 84420253Sjoerg return uid; 84520253Sjoerg} 84620253Sjoerg 84720253Sjoerg 84820253Sjoergstatic uid_t 849284118Sbaptpw_gidpolicy(struct cargs * args, char *nam, gid_t prefer) 85020253Sjoerg{ 85120253Sjoerg struct group *grp; 85220253Sjoerg gid_t gid = (uid_t) - 1; 85320253Sjoerg struct carg *a_gid = getarg(args, 'g'); 854284118Sbapt struct userconf *cnf = conf.userconf; 85520253Sjoerg 85620253Sjoerg /* 85720253Sjoerg * If no arg given, see if default can help out 85820253Sjoerg */ 85920253Sjoerg if (a_gid == NULL && cnf->default_group && *cnf->default_group) 86020253Sjoerg a_gid = addarg(args, 'g', cnf->default_group); 86120253Sjoerg 86220253Sjoerg /* 86320253Sjoerg * Check the given gid, if any 86420253Sjoerg */ 86544229Sdavidn SETGRENT(); 86620253Sjoerg if (a_gid != NULL) { 86744229Sdavidn if ((grp = GETGRNAM(a_gid->val)) == NULL) { 86820253Sjoerg gid = (gid_t) atol(a_gid->val); 86961957Sache if ((gid == 0 && !isdigit((unsigned char)*a_gid->val)) || (grp = GETGRGID(gid)) == NULL) 87030259Scharnier errx(EX_NOUSER, "group `%s' is not defined", a_gid->val); 87120253Sjoerg } 87220253Sjoerg gid = grp->gr_gid; 873262865Sjulian } else if ((grp = GETGRNAM(nam)) != NULL && 874262865Sjulian (grp->gr_mem == NULL || grp->gr_mem[0] == NULL)) { 87520267Sjoerg gid = grp->gr_gid; /* Already created? Use it anyway... */ 87620253Sjoerg } else { 87720253Sjoerg struct cargs grpargs; 87820253Sjoerg char tmp[32]; 87920253Sjoerg 88020253Sjoerg LIST_INIT(&grpargs); 88120253Sjoerg 88220253Sjoerg /* 88320253Sjoerg * We need to auto-create a group with the user's name. We 88420253Sjoerg * can send all the appropriate output to our sister routine 88520253Sjoerg * bit first see if we can create a group with gid==uid so we 88620253Sjoerg * can keep the user and group ids in sync. We purposely do 88720253Sjoerg * NOT check the gid range if we can force the sync. If the 88820253Sjoerg * user's name dups an existing group, then the group add 88920253Sjoerg * function will happily handle that case for us and exit. 89020253Sjoerg */ 89144229Sdavidn if (GETGRGID(prefer) == NULL) { 892282700Sbapt snprintf(tmp, sizeof(tmp), "%u", prefer); 89320253Sjoerg addarg(&grpargs, 'g', tmp); 89420253Sjoerg } 895284121Sbapt if (conf.dryrun) { 896285395Sbapt gid = pw_groupnext(cnf, true); 897285395Sbapt } else { 898284128Sbapt pw_group(M_ADD, nam, -1, &grpargs); 89944229Sdavidn if ((grp = GETGRNAM(nam)) != NULL) 90020267Sjoerg gid = grp->gr_gid; 90120267Sjoerg } 90270486Sben a_gid = LIST_FIRST(&grpargs); 90320253Sjoerg while (a_gid != NULL) { 90470486Sben struct carg *t = LIST_NEXT(a_gid, list); 90520253Sjoerg LIST_REMOVE(a_gid, list); 90620253Sjoerg a_gid = t; 90720253Sjoerg } 90820253Sjoerg } 90944229Sdavidn ENDGRENT(); 91020253Sjoerg return gid; 91120253Sjoerg} 91220253Sjoerg 91320253Sjoerg 91420253Sjoergstatic time_t 91520253Sjoergpw_pwdpolicy(struct userconf * cnf, struct cargs * args) 91620253Sjoerg{ 91720253Sjoerg time_t result = 0; 91820253Sjoerg time_t now = time(NULL); 91927831Sdavidn struct carg *arg = getarg(args, 'p'); 92020253Sjoerg 92120253Sjoerg if (arg != NULL) { 92220253Sjoerg if ((result = parse_date(now, arg->val)) == now) 92330259Scharnier errx(EX_DATAERR, "invalid date/time `%s'", arg->val); 92420253Sjoerg } else if (cnf->password_days > 0) 92520253Sjoerg result = now + ((long) cnf->password_days * 86400L); 92620253Sjoerg return result; 92720253Sjoerg} 92820253Sjoerg 92920253Sjoerg 93020253Sjoergstatic time_t 93120253Sjoergpw_exppolicy(struct userconf * cnf, struct cargs * args) 93220253Sjoerg{ 93320253Sjoerg time_t result = 0; 93420253Sjoerg time_t now = time(NULL); 93520253Sjoerg struct carg *arg = getarg(args, 'e'); 93620253Sjoerg 93720253Sjoerg if (arg != NULL) { 93820253Sjoerg if ((result = parse_date(now, arg->val)) == now) 93930259Scharnier errx(EX_DATAERR, "invalid date/time `%s'", arg->val); 94020253Sjoerg } else if (cnf->expire_days > 0) 94120253Sjoerg result = now + ((long) cnf->expire_days * 86400L); 94220253Sjoerg return result; 94320253Sjoerg} 94420253Sjoerg 94520253Sjoerg 94620253Sjoergstatic char * 94720253Sjoergpw_homepolicy(struct userconf * cnf, struct cargs * args, char const * user) 94820253Sjoerg{ 94920253Sjoerg struct carg *arg = getarg(args, 'd'); 950282699Sbapt static char home[128]; 95120253Sjoerg 95220253Sjoerg if (arg) 953282699Sbapt return (arg->val); 95420253Sjoerg 955282699Sbapt if (cnf->home == NULL || *cnf->home == '\0') 956282699Sbapt errx(EX_CONFIG, "no base home directory set"); 957282699Sbapt snprintf(home, sizeof(home), "%s/%s", cnf->home, user); 958282699Sbapt 959282699Sbapt return (home); 96020253Sjoerg} 96120253Sjoerg 96220253Sjoergstatic char * 96320253Sjoergshell_path(char const * path, char *shells[], char *sh) 96420253Sjoerg{ 96520253Sjoerg if (sh != NULL && (*sh == '/' || *sh == '\0')) 96620253Sjoerg return sh; /* specified full path or forced none */ 96720253Sjoerg else { 96820253Sjoerg char *p; 96920253Sjoerg char paths[_UC_MAXLINE]; 97020253Sjoerg 97120253Sjoerg /* 97220253Sjoerg * We need to search paths 97320253Sjoerg */ 974130633Srobert strlcpy(paths, path, sizeof(paths)); 97520253Sjoerg for (p = strtok(paths, ": \t\r\n"); p != NULL; p = strtok(NULL, ": \t\r\n")) { 97620253Sjoerg int i; 97720253Sjoerg static char shellpath[256]; 97820253Sjoerg 97920253Sjoerg if (sh != NULL) { 980282700Sbapt snprintf(shellpath, sizeof(shellpath), "%s/%s", p, sh); 98120253Sjoerg if (access(shellpath, X_OK) == 0) 98220253Sjoerg return shellpath; 98320253Sjoerg } else 98420253Sjoerg for (i = 0; i < _UC_MAXSHELLS && shells[i] != NULL; i++) { 985282700Sbapt snprintf(shellpath, sizeof(shellpath), "%s/%s", p, shells[i]); 98620253Sjoerg if (access(shellpath, X_OK) == 0) 98720253Sjoerg return shellpath; 98820253Sjoerg } 98920253Sjoerg } 99020253Sjoerg if (sh == NULL) 99130259Scharnier errx(EX_OSFILE, "can't find shell `%s' in shell paths", sh); 99230259Scharnier errx(EX_CONFIG, "no default shell available or defined"); 99320253Sjoerg return NULL; 99420253Sjoerg } 99520253Sjoerg} 99620253Sjoerg 99720253Sjoerg 99820253Sjoergstatic char * 99920253Sjoergpw_shellpolicy(struct userconf * cnf, struct cargs * args, char *newshell) 100020253Sjoerg{ 100120253Sjoerg char *sh = newshell; 100220253Sjoerg struct carg *arg = getarg(args, 's'); 100320253Sjoerg 100420253Sjoerg if (newshell == NULL && arg != NULL) 100520253Sjoerg sh = arg->val; 100620253Sjoerg return shell_path(cnf->shelldir, cnf->shells, sh ? sh : cnf->shell_default); 100720253Sjoerg} 100820253Sjoerg 1009179365Santoine#define SALTSIZE 32 101020253Sjoerg 1011179365Santoinestatic char const chars[] = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ./"; 1012179365Santoine 101320253Sjoergchar * 101420253Sjoergpw_pwcrypt(char *password) 101520253Sjoerg{ 101620253Sjoerg int i; 1017179365Santoine char salt[SALTSIZE + 1]; 1018231994Skevlo char *cryptpw; 101920253Sjoerg 102020253Sjoerg static char buf[256]; 102120253Sjoerg 102220253Sjoerg /* 102320253Sjoerg * Calculate a salt value 102420253Sjoerg */ 1025179365Santoine for (i = 0; i < SALTSIZE; i++) 1026181785Sache salt[i] = chars[arc4random_uniform(sizeof(chars) - 1)]; 1027179365Santoine salt[SALTSIZE] = '\0'; 102820253Sjoerg 1029231994Skevlo cryptpw = crypt(password, salt); 1030231994Skevlo if (cryptpw == NULL) 1031231994Skevlo errx(EX_CONFIG, "crypt(3) failure"); 1032231994Skevlo return strcpy(buf, cryptpw); 103320253Sjoerg} 103420253Sjoerg 103520590Sdavidn 103620253Sjoergstatic char * 1037285409Sbaptpw_password(struct userconf * cnf, char const * user) 103820253Sjoerg{ 103920253Sjoerg int i, l; 104020253Sjoerg char pwbuf[32]; 104120253Sjoerg 104220253Sjoerg switch (cnf->default_password) { 104320253Sjoerg case -1: /* Random password */ 104473563Skris l = (arc4random() % 8 + 8); /* 8 - 16 chars */ 104520253Sjoerg for (i = 0; i < l; i++) 1046181785Sache pwbuf[i] = chars[arc4random_uniform(sizeof(chars)-1)]; 104720253Sjoerg pwbuf[i] = '\0'; 104820253Sjoerg 104920253Sjoerg /* 105020253Sjoerg * We give this information back to the user 105120253Sjoerg */ 1052285137Sbapt if (conf.fd == -1 && !conf.dryrun) { 105361957Sache if (isatty(STDOUT_FILENO)) 105420712Sdavidn printf("Password for '%s' is: ", user); 105520253Sjoerg printf("%s\n", pwbuf); 105620253Sjoerg fflush(stdout); 105720253Sjoerg } 105820253Sjoerg break; 105920253Sjoerg 106020253Sjoerg case -2: /* No password at all! */ 106120253Sjoerg return ""; 106220253Sjoerg 106320253Sjoerg case 0: /* No login - default */ 106420253Sjoerg default: 106520253Sjoerg return "*"; 106620253Sjoerg 106720253Sjoerg case 1: /* user's name */ 1068130633Srobert strlcpy(pwbuf, user, sizeof(pwbuf)); 106920253Sjoerg break; 107020253Sjoerg } 107120253Sjoerg return pw_pwcrypt(pwbuf); 107220253Sjoerg} 107320253Sjoerg 1074284111Sbaptstatic int 1075285401Sbaptpw_userdel(char *name, long id) 1076284111Sbapt{ 1077285401Sbapt struct passwd *pwd = NULL; 1078284111Sbapt char file[MAXPATHLEN]; 1079284111Sbapt char home[MAXPATHLEN]; 1080285401Sbapt uid_t uid; 1081284111Sbapt struct group *gr, *grp; 1082284111Sbapt char grname[LOGNAMESIZE]; 1083284111Sbapt int rc; 1084284111Sbapt struct stat st; 108520253Sjoerg 1086285401Sbapt if (id < 0 && name == NULL) 1087285401Sbapt errx(EX_DATAERR, "username or id required"); 1088285401Sbapt 1089285401Sbapt pwd = (name != NULL) ? GETPWNAM(pw_checkname(name, 0)) : GETPWUID(id); 1090285401Sbapt if (pwd == NULL) { 1091285401Sbapt if (name == NULL) 1092285401Sbapt errx(EX_NOUSER, "no such uid `%ld'", id); 1093285401Sbapt errx(EX_NOUSER, "no such user `%s'", name); 1094285401Sbapt } 1095285401Sbapt uid = pwd->pw_uid; 1096285401Sbapt if (name == NULL) 1097285401Sbapt name = pwd->pw_name; 1098285401Sbapt 1099284111Sbapt if (strcmp(pwd->pw_name, "root") == 0) 1100284111Sbapt errx(EX_DATAERR, "cannot remove user 'root'"); 1101284111Sbapt 1102284111Sbapt if (!PWALTDIR()) { 1103284111Sbapt /* 1104284111Sbapt * Remove opie record from /etc/opiekeys 1105284111Sbapt */ 1106284111Sbapt 1107284111Sbapt rmopie(pwd->pw_name); 1108284111Sbapt 1109284111Sbapt /* 1110284111Sbapt * Remove crontabs 1111284111Sbapt */ 1112284111Sbapt snprintf(file, sizeof(file), "/var/cron/tabs/%s", pwd->pw_name); 1113284111Sbapt if (access(file, F_OK) == 0) { 1114284111Sbapt snprintf(file, sizeof(file), "crontab -u %s -r", pwd->pw_name); 1115284111Sbapt system(file); 1116284111Sbapt } 1117284111Sbapt } 1118284111Sbapt /* 1119284111Sbapt * Save these for later, since contents of pwd may be 1120284111Sbapt * invalidated by deletion 1121284111Sbapt */ 1122284111Sbapt snprintf(file, sizeof(file), "%s/%s", _PATH_MAILDIR, pwd->pw_name); 1123284111Sbapt strlcpy(home, pwd->pw_dir, sizeof(home)); 1124284111Sbapt gr = GETGRGID(pwd->pw_gid); 1125284111Sbapt if (gr != NULL) 1126284111Sbapt strlcpy(grname, gr->gr_name, LOGNAMESIZE); 1127284111Sbapt else 1128284111Sbapt grname[0] = '\0'; 1129284111Sbapt 1130284111Sbapt rc = delpwent(pwd); 1131284111Sbapt if (rc == -1) 1132284111Sbapt err(EX_IOERR, "user '%s' does not exist", pwd->pw_name); 1133284111Sbapt else if (rc != 0) 1134284111Sbapt err(EX_IOERR, "passwd update"); 1135284111Sbapt 1136285401Sbapt if (conf.userconf->nispasswd && *conf.userconf->nispasswd=='/') { 1137285401Sbapt rc = delnispwent(conf.userconf->nispasswd, name); 1138284111Sbapt if (rc == -1) 1139285401Sbapt warnx("WARNING: user '%s' does not exist in NIS passwd", 1140285401Sbapt pwd->pw_name); 1141284111Sbapt else if (rc != 0) 1142284111Sbapt warn("WARNING: NIS passwd update"); 1143284111Sbapt /* non-fatal */ 1144284111Sbapt } 1145284111Sbapt 1146284128Sbapt grp = GETGRNAM(name); 1147284111Sbapt if (grp != NULL && 1148284111Sbapt (grp->gr_mem == NULL || *grp->gr_mem == NULL) && 1149284128Sbapt strcmp(name, grname) == 0) 1150284128Sbapt delgrent(GETGRNAM(name)); 1151284111Sbapt SETGRENT(); 1152284111Sbapt while ((grp = GETGRENT()) != NULL) { 1153284111Sbapt int i, j; 1154284111Sbapt char group[MAXLOGNAME]; 1155284113Sbapt if (grp->gr_mem == NULL) 1156284113Sbapt continue; 1157284113Sbapt 1158284113Sbapt for (i = 0; grp->gr_mem[i] != NULL; i++) { 1159284128Sbapt if (strcmp(grp->gr_mem[i], name) != 0) 1160284113Sbapt continue; 1161284113Sbapt 1162284113Sbapt for (j = i; grp->gr_mem[j] != NULL; j++) 1163284113Sbapt grp->gr_mem[j] = grp->gr_mem[j+1]; 1164284113Sbapt strlcpy(group, grp->gr_name, MAXLOGNAME); 1165284113Sbapt chggrent(group, grp); 1166284111Sbapt } 1167284111Sbapt } 1168284111Sbapt ENDGRENT(); 1169284111Sbapt 1170285401Sbapt pw_log(conf.userconf, M_DELETE, W_USER, "%s(%u) account removed", name, 1171285401Sbapt uid); 1172284111Sbapt 1173284117Sbapt if (!PWALTDIR()) { 1174284111Sbapt /* 1175284111Sbapt * Remove mail file 1176284111Sbapt */ 1177284111Sbapt remove(file); 1178284111Sbapt 1179284111Sbapt /* 1180284111Sbapt * Remove at jobs 1181284111Sbapt */ 1182284111Sbapt if (getpwuid(uid) == NULL) 1183284111Sbapt rmat(uid); 1184284111Sbapt 1185284111Sbapt /* 1186284111Sbapt * Remove home directory and contents 1187284111Sbapt */ 1188285401Sbapt if (conf.deletehome && *home == '/' && getpwuid(uid) == NULL && 1189284112Sbapt stat(home, &st) != -1) { 1190284112Sbapt rm_r(home, uid); 1191285401Sbapt pw_log(conf.userconf, M_DELETE, W_USER, "%s(%u) home '%s' %sremoved", 1192284128Sbapt name, uid, home, 1193284112Sbapt stat(home, &st) == -1 ? "" : "not completely "); 1194284111Sbapt } 1195284111Sbapt } 1196284111Sbapt 1197284111Sbapt return (EXIT_SUCCESS); 1198284111Sbapt} 1199284111Sbapt 120020253Sjoergstatic int 1201284124Sbaptprint_user(struct passwd * pwd) 120220253Sjoerg{ 1203284122Sbapt if (!conf.pretty) { 1204242349Sbapt char *buf; 120520253Sjoerg 1206284124Sbapt buf = conf.v7 ? pw_make_v7(pwd) : pw_make(pwd); 1207242349Sbapt printf("%s\n", buf); 1208242349Sbapt free(buf); 120920253Sjoerg } else { 121020267Sjoerg int j; 121120253Sjoerg char *p; 121244229Sdavidn struct group *grp = GETGRGID(pwd->pw_gid); 121320253Sjoerg char uname[60] = "User &", office[60] = "[None]", 121420253Sjoerg wphone[60] = "[None]", hphone[60] = "[None]"; 121520590Sdavidn char acexpire[32] = "[None]", pwexpire[32] = "[None]"; 121620590Sdavidn struct tm * tptr; 121720253Sjoerg 121820253Sjoerg if ((p = strtok(pwd->pw_gecos, ",")) != NULL) { 1219130633Srobert strlcpy(uname, p, sizeof(uname)); 122020253Sjoerg if ((p = strtok(NULL, ",")) != NULL) { 1221130633Srobert strlcpy(office, p, sizeof(office)); 122220253Sjoerg if ((p = strtok(NULL, ",")) != NULL) { 1223130633Srobert strlcpy(wphone, p, sizeof(wphone)); 122420253Sjoerg if ((p = strtok(NULL, "")) != NULL) { 1225130633Srobert strlcpy(hphone, p, 1226130633Srobert sizeof(hphone)); 122720253Sjoerg } 122820253Sjoerg } 122920253Sjoerg } 123020253Sjoerg } 123120253Sjoerg /* 123220253Sjoerg * Handle '&' in gecos field 123320253Sjoerg */ 123420253Sjoerg if ((p = strchr(uname, '&')) != NULL) { 123520253Sjoerg int l = strlen(pwd->pw_name); 123620253Sjoerg int m = strlen(p); 123720253Sjoerg 123820253Sjoerg memmove(p + l, p + 1, m); 123920253Sjoerg memmove(p, pwd->pw_name, l); 124061957Sache *p = (char) toupper((unsigned char)*p); 124120253Sjoerg } 124220590Sdavidn if (pwd->pw_expire > (time_t)0 && (tptr = localtime(&pwd->pw_expire)) != NULL) 124374569Sache strftime(acexpire, sizeof acexpire, "%c", tptr); 124461957Sache if (pwd->pw_change > (time_t)0 && (tptr = localtime(&pwd->pw_change)) != NULL) 124574569Sache strftime(pwexpire, sizeof pwexpire, "%c", tptr); 1246283842Sbapt printf("Login Name: %-15s #%-12u Group: %-15s #%u\n" 124720747Sdavidn " Full Name: %s\n" 124820747Sdavidn " Home: %-26.26s Class: %s\n" 124920747Sdavidn " Shell: %-26.26s Office: %s\n" 125020747Sdavidn "Work Phone: %-26.26s Home Phone: %s\n" 125120747Sdavidn "Acc Expire: %-26.26s Pwd Expire: %s\n", 1252283842Sbapt pwd->pw_name, pwd->pw_uid, 1253283842Sbapt grp ? grp->gr_name : "(invalid)", pwd->pw_gid, 125420253Sjoerg uname, pwd->pw_dir, pwd->pw_class, 125520590Sdavidn pwd->pw_shell, office, wphone, hphone, 125620590Sdavidn acexpire, pwexpire); 125744229Sdavidn SETGRENT(); 125820267Sjoerg j = 0; 125944229Sdavidn while ((grp=GETGRENT()) != NULL) 126020267Sjoerg { 126120267Sjoerg int i = 0; 1262262865Sjulian if (grp->gr_mem != NULL) { 1263262865Sjulian while (grp->gr_mem[i] != NULL) 126420267Sjoerg { 1265262865Sjulian if (strcmp(grp->gr_mem[i], pwd->pw_name)==0) 1266262865Sjulian { 1267262865Sjulian printf(j++ == 0 ? " Groups: %s" : ",%s", grp->gr_name); 1268262865Sjulian break; 1269262865Sjulian } 1270262865Sjulian ++i; 127120267Sjoerg } 127220267Sjoerg } 127320267Sjoerg } 127444229Sdavidn ENDGRENT(); 127561957Sache printf("%s", j ? "\n" : ""); 127620253Sjoerg } 127720267Sjoerg return EXIT_SUCCESS; 127820253Sjoerg} 127920253Sjoerg 1280284110Sbaptchar * 1281284110Sbaptpw_checkname(char *name, int gecos) 128220253Sjoerg{ 1283109961Sgad char showch[8]; 1284284110Sbapt const char *badchars, *ch, *showtype; 1285109961Sgad int reject; 128620253Sjoerg 1287109961Sgad ch = name; 1288109961Sgad reject = 0; 1289109961Sgad if (gecos) { 1290109961Sgad /* See if the name is valid as a gecos (comment) field. */ 1291109961Sgad badchars = ":!@"; 1292109961Sgad showtype = "gecos field"; 1293109961Sgad } else { 1294109961Sgad /* See if the name is valid as a userid or group. */ 1295109961Sgad badchars = " ,\t:+&#%$^()!@~*?<>=|\\/\""; 1296109961Sgad showtype = "userid/group name"; 1297109961Sgad /* Userids and groups can not have a leading '-'. */ 1298109961Sgad if (*ch == '-') 1299109961Sgad reject = 1; 130020253Sjoerg } 1301109961Sgad if (!reject) { 1302109961Sgad while (*ch) { 1303109961Sgad if (strchr(badchars, *ch) != NULL || *ch < ' ' || 1304109961Sgad *ch == 127) { 1305109961Sgad reject = 1; 1306109961Sgad break; 1307109961Sgad } 1308109961Sgad /* 8-bit characters are only allowed in GECOS fields */ 1309109961Sgad if (!gecos && (*ch & 0x80)) { 1310109961Sgad reject = 1; 1311109961Sgad break; 1312109961Sgad } 1313109961Sgad ch++; 1314109961Sgad } 1315109961Sgad } 1316109961Sgad /* 1317109961Sgad * A `$' is allowed as the final character for userids and groups, 1318109961Sgad * mainly for the benefit of samba. 1319109961Sgad */ 1320109961Sgad if (reject && !gecos) { 1321109961Sgad if (*ch == '$' && *(ch + 1) == '\0') { 1322109961Sgad reject = 0; 1323109961Sgad ch++; 1324109961Sgad } 1325109961Sgad } 1326109961Sgad if (reject) { 1327109961Sgad snprintf(showch, sizeof(showch), (*ch >= ' ' && *ch < 127) 1328109961Sgad ? "`%c'" : "0x%02x", *ch); 1329228673Sdim errx(EX_DATAERR, "invalid character %s at position %td in %s", 1330109961Sgad showch, (ch - name), showtype); 1331109961Sgad } 1332109961Sgad if (!gecos && (ch - name) > LOGNAMESIZE) 1333109961Sgad errx(EX_DATAERR, "name too long `%s' (max is %d)", name, 1334109961Sgad LOGNAMESIZE); 1335284110Sbapt 1336284110Sbapt return (name); 133720253Sjoerg} 133820253Sjoerg 133920253Sjoerg 134020253Sjoergstatic void 134120253Sjoergrmat(uid_t uid) 134220253Sjoerg{ 134320253Sjoerg DIR *d = opendir("/var/at/jobs"); 134420253Sjoerg 134520253Sjoerg if (d != NULL) { 134620253Sjoerg struct dirent *e; 134720253Sjoerg 134820253Sjoerg while ((e = readdir(d)) != NULL) { 134920253Sjoerg struct stat st; 135020253Sjoerg 135120253Sjoerg if (strncmp(e->d_name, ".lock", 5) != 0 && 135220253Sjoerg stat(e->d_name, &st) == 0 && 135320253Sjoerg !S_ISDIR(st.st_mode) && 135420253Sjoerg st.st_uid == uid) { 135520253Sjoerg char tmp[MAXPATHLEN]; 135620253Sjoerg 1357282700Sbapt snprintf(tmp, sizeof(tmp), "/usr/bin/atrm %s", e->d_name); 135820253Sjoerg system(tmp); 135920253Sjoerg } 136020253Sjoerg } 136120253Sjoerg closedir(d); 136220253Sjoerg } 136320253Sjoerg} 136420747Sdavidn 136520747Sdavidnstatic void 136685145Sachermopie(char const * name) 136720747Sdavidn{ 136885145Sache static const char etcopie[] = "/etc/opiekeys"; 136985145Sache FILE *fp = fopen(etcopie, "r+"); 137020747Sdavidn 137121052Sdavidn if (fp != NULL) { 137221052Sdavidn char tmp[1024]; 137321052Sdavidn off_t atofs = 0; 137421052Sdavidn int length = strlen(name); 137520747Sdavidn 137621052Sdavidn while (fgets(tmp, sizeof tmp, fp) != NULL) { 137721052Sdavidn if (strncmp(name, tmp, length) == 0 && tmp[length]==' ') { 137821052Sdavidn if (fseek(fp, atofs, SEEK_SET) == 0) { 137921052Sdavidn fwrite("#", 1, 1, fp); /* Comment username out */ 138021052Sdavidn } 138121052Sdavidn break; 138220747Sdavidn } 138321052Sdavidn atofs = ftell(fp); 138420747Sdavidn } 138521052Sdavidn /* 138621052Sdavidn * If we got an error of any sort, don't update! 138721052Sdavidn */ 138821052Sdavidn fclose(fp); 138920747Sdavidn } 139020747Sdavidn} 139120747Sdavidn 1392