pw_user.c revision 52512
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 52512 1999-10-26 08:34:09Z davidn $"; 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> 4330259Scharnier#include <unistd.h> 4422394Sdavidn#include <utmp.h> 4522394Sdavidn#if defined(USE_MD5RAND) 4620555Sdavidn#include <md5.h> 4722394Sdavidn#endif 4820253Sjoerg#include "pw.h" 4920253Sjoerg#include "bitmap.h" 5020253Sjoerg 5123318Sache#if (MAXLOGNAME-1) > UT_NAMESIZE 5222394Sdavidn#define LOGNAMESIZE UT_NAMESIZE 5322394Sdavidn#else 5423318Sache#define LOGNAMESIZE (MAXLOGNAME-1) 5522394Sdavidn#endif 5622394Sdavidn 5749171Sdavidnstatic int randinit; 5852512Sdavidnstatic char locked_str[] = "*LOCKED*"; 5924214Sache 6044386Sdavidnstatic int print_user(struct passwd * pwd, int pretty, int v7); 6120253Sjoergstatic uid_t pw_uidpolicy(struct userconf * cnf, struct cargs * args); 6220253Sjoergstatic uid_t pw_gidpolicy(struct userconf * cnf, struct cargs * args, char *nam, gid_t prefer); 6320253Sjoergstatic time_t pw_pwdpolicy(struct userconf * cnf, struct cargs * args); 6420253Sjoergstatic time_t pw_exppolicy(struct userconf * cnf, struct cargs * args); 6520253Sjoergstatic char *pw_homepolicy(struct userconf * cnf, struct cargs * args, char const * user); 6620253Sjoergstatic char *pw_shellpolicy(struct userconf * cnf, struct cargs * args, char *newshell); 6720253Sjoergstatic char *pw_password(struct userconf * cnf, struct cargs * args, char const * user); 6820253Sjoergstatic char *shell_path(char const * path, char *shells[], char *sh); 6920253Sjoergstatic void rmat(uid_t uid); 7020747Sdavidnstatic void rmskey(char const * name); 7120253Sjoerg 7220253Sjoerg/*- 7320253Sjoerg * -C config configuration file 7420253Sjoerg * -q quiet operation 7520253Sjoerg * -n name login name 7620253Sjoerg * -u uid user id 7720253Sjoerg * -c comment user name/comment 7820253Sjoerg * -d directory home directory 7920253Sjoerg * -e date account expiry date 8020253Sjoerg * -p date password expiry date 8120253Sjoerg * -g grp primary group 8220253Sjoerg * -G grp1,grp2 additional groups 8320253Sjoerg * -m [ -k dir ] create and set up home 8420253Sjoerg * -s shell name of login shell 8520253Sjoerg * -o duplicate uid ok 8620253Sjoerg * -L class user class 8720253Sjoerg * -l name new login name 8820253Sjoerg * -h fd password filehandle 8920253Sjoerg * -F force print or add 9020253Sjoerg * Setting defaults: 9120253Sjoerg * -D set user defaults 9220253Sjoerg * -b dir default home root dir 9320253Sjoerg * -e period default expiry period 9420253Sjoerg * -p period default password change period 9520253Sjoerg * -g group default group 9620253Sjoerg * -G grp1,grp2.. default additional groups 9720253Sjoerg * -L class default login class 9820253Sjoerg * -k dir default home skeleton 9920253Sjoerg * -s shell default shell 10020253Sjoerg * -w method default password method 10120253Sjoerg */ 10220253Sjoerg 10320253Sjoergint 10420253Sjoergpw_user(struct userconf * cnf, int mode, struct cargs * args) 10520253Sjoerg{ 10652502Sdavidn int rc; 10720253Sjoerg char *p = NULL; 10852512Sdavidn char *passtmp; 10920253Sjoerg struct carg *a_name; 11020253Sjoerg struct carg *a_uid; 11120253Sjoerg struct carg *arg; 11220253Sjoerg struct passwd *pwd = NULL; 11320253Sjoerg struct group *grp; 11420253Sjoerg struct stat st; 11520747Sdavidn char line[_PASSWORD_LEN+1]; 11620253Sjoerg 11720253Sjoerg static struct passwd fakeuser = 11820253Sjoerg { 11920253Sjoerg NULL, 12020253Sjoerg "*", 12120253Sjoerg -1, 12220253Sjoerg -1, 12320253Sjoerg 0, 12420253Sjoerg "", 12520253Sjoerg "User &", 12620253Sjoerg "/bin/sh", 12720253Sjoerg 0, 12849171Sdavidn 0, 12920253Sjoerg 0 13020253Sjoerg }; 13120253Sjoerg 13252512Sdavidn 13320253Sjoerg /* 13420267Sjoerg * With M_NEXT, we only need to return the 13520267Sjoerg * next uid to stdout 13620267Sjoerg */ 13720267Sjoerg if (mode == M_NEXT) 13820267Sjoerg { 13920267Sjoerg uid_t next = pw_uidpolicy(cnf, args); 14020267Sjoerg if (getarg(args, 'q')) 14120267Sjoerg return next; 14220267Sjoerg printf("%ld:", (long)next); 14320267Sjoerg pw_group(cnf, mode, args); 14420267Sjoerg return EXIT_SUCCESS; 14520267Sjoerg } 14620267Sjoerg 14720267Sjoerg /* 14820253Sjoerg * We can do all of the common legwork here 14920253Sjoerg */ 15020253Sjoerg 15120253Sjoerg if ((arg = getarg(args, 'b')) != NULL) { 15220267Sjoerg cnf->home = arg->val; 15320253Sjoerg } 15421052Sdavidn 15521052Sdavidn /* 15621052Sdavidn * If we'll need to use it or we're updating it, 15721052Sdavidn * then create the base home directory if necessary 15821052Sdavidn */ 15921052Sdavidn if (arg != NULL || getarg(args, 'm') != NULL) { 16021052Sdavidn int l = strlen(cnf->home); 16121052Sdavidn 16221052Sdavidn if (l > 1 && cnf->home[l-1] == '/') /* Shave off any trailing path delimiter */ 16321052Sdavidn cnf->home[--l] = '\0'; 16421052Sdavidn 16521052Sdavidn if (l < 2 || *cnf->home != '/') /* Check for absolute path name */ 16630259Scharnier errx(EX_DATAERR, "invalid base directory for home '%s'", cnf->home); 16721052Sdavidn 16821052Sdavidn if (stat(cnf->home, &st) == -1) { 16921052Sdavidn char dbuf[MAXPATHLEN]; 17021052Sdavidn 17121242Sdavidn /* 17221242Sdavidn * This is a kludge especially for Joerg :) 17321242Sdavidn * If the home directory would be created in the root partition, then 17421242Sdavidn * we really create it under /usr which is likely to have more space. 17521242Sdavidn * But we create a symlink from cnf->home -> "/usr" -> cnf->home 17621242Sdavidn */ 17721242Sdavidn if (strchr(cnf->home+1, '/') == NULL) { 17821242Sdavidn strcpy(dbuf, "/usr"); 17921242Sdavidn strncat(dbuf, cnf->home, MAXPATHLEN-5); 18021242Sdavidn if (mkdir(dbuf, 0755) != -1 || errno == EEXIST) { 18121242Sdavidn chown(dbuf, 0, 0); 18221242Sdavidn symlink(dbuf, cnf->home); 18321242Sdavidn } 18421242Sdavidn /* If this falls, fall back to old method */ 18521242Sdavidn } 18621052Sdavidn p = strncpy(dbuf, cnf->home, sizeof dbuf); 18721052Sdavidn dbuf[MAXPATHLEN-1] = '\0'; 18821242Sdavidn if (stat(dbuf, &st) == -1) { 18921242Sdavidn while ((p = strchr(++p, '/')) != NULL) { 19021242Sdavidn *p = '\0'; 19121242Sdavidn if (stat(dbuf, &st) == -1) { 19221242Sdavidn if (mkdir(dbuf, 0755) == -1) 19321242Sdavidn goto direrr; 19421242Sdavidn chown(dbuf, 0, 0); 19521242Sdavidn } else if (!S_ISDIR(st.st_mode)) 19630259Scharnier errx(EX_OSFILE, "'%s' (root home parent) is not a directory", dbuf); 19721242Sdavidn *p = '/'; 19821242Sdavidn } 19921052Sdavidn } 20021242Sdavidn if (stat(dbuf, &st) == -1) { 20121052Sdavidn if (mkdir(dbuf, 0755) == -1) { 20230259Scharnier direrr: err(EX_OSFILE, "mkdir '%s'", dbuf); 20321052Sdavidn } 20421052Sdavidn chown(dbuf, 0, 0); 20521052Sdavidn } 20621052Sdavidn } else if (!S_ISDIR(st.st_mode)) 20730259Scharnier errx(EX_OSFILE, "root home `%s' is not a directory", cnf->home); 20821052Sdavidn } 20921052Sdavidn 21021052Sdavidn 21120253Sjoerg if ((arg = getarg(args, 'e')) != NULL) 21220253Sjoerg cnf->expire_days = atoi(arg->val); 21320253Sjoerg 21421330Sdavidn if ((arg = getarg(args, 'y')) != NULL) 21521330Sdavidn cnf->nispasswd = arg->val; 21621330Sdavidn 21720253Sjoerg if ((arg = getarg(args, 'p')) != NULL && arg->val) 21820253Sjoerg cnf->password_days = atoi(arg->val); 21920253Sjoerg 22020253Sjoerg if ((arg = getarg(args, 'g')) != NULL) { 22120253Sjoerg p = arg->val; 22244229Sdavidn if ((grp = GETGRNAM(p)) == NULL) { 22344229Sdavidn if (!isdigit(*p) || (grp = GETGRGID((gid_t) atoi(p))) == NULL) 22430259Scharnier errx(EX_NOUSER, "group `%s' does not exist", p); 22520253Sjoerg } 22620253Sjoerg cnf->default_group = newstr(grp->gr_name); 22720253Sjoerg } 22820253Sjoerg if ((arg = getarg(args, 'L')) != NULL) 22920679Sdavidn cnf->default_class = pw_checkname((u_char *)arg->val, 0); 23020253Sjoerg 23120253Sjoerg if ((arg = getarg(args, 'G')) != NULL && arg->val) { 23220253Sjoerg int i = 0; 23320253Sjoerg 23420747Sdavidn for (p = strtok(arg->val, ", \t"); p != NULL; p = strtok(NULL, ", \t")) { 23544229Sdavidn if ((grp = GETGRNAM(p)) == NULL) { 23644229Sdavidn if (!isdigit(*p) || (grp = GETGRGID((gid_t) atoi(p))) == NULL) 23730259Scharnier errx(EX_NOUSER, "group `%s' does not exist", p); 23820253Sjoerg } 23920747Sdavidn if (extendarray(&cnf->groups, &cnf->numgroups, i + 2) != -1) 24020747Sdavidn cnf->groups[i++] = newstr(grp->gr_name); 24120253Sjoerg } 24220747Sdavidn while (i < cnf->numgroups) 24320253Sjoerg cnf->groups[i++] = NULL; 24420253Sjoerg } 24520253Sjoerg if ((arg = getarg(args, 'k')) != NULL) { 24626088Sdavidn if (stat(cnf->dotdir = arg->val, &st) == -1 || !S_ISDIR(st.st_mode)) 24730259Scharnier errx(EX_OSFILE, "skeleton `%s' is not a directory or does not exist", cnf->dotdir); 24820253Sjoerg } 24920253Sjoerg if ((arg = getarg(args, 's')) != NULL) 25020253Sjoerg cnf->shell_default = arg->val; 25120253Sjoerg 25220253Sjoerg if (mode == M_ADD && getarg(args, 'D')) { 25320253Sjoerg if (getarg(args, 'n') != NULL) 25430259Scharnier errx(EX_DATAERR, "can't combine `-D' with `-n name'"); 25520253Sjoerg if ((arg = getarg(args, 'u')) != NULL && (p = strtok(arg->val, ", \t")) != NULL) { 25620253Sjoerg if ((cnf->min_uid = (uid_t) atoi(p)) == 0) 25720253Sjoerg cnf->min_uid = 1000; 25820253Sjoerg if ((p = strtok(NULL, " ,\t")) == NULL || (cnf->max_uid = (uid_t) atoi(p)) < cnf->min_uid) 25920253Sjoerg cnf->max_uid = 32000; 26020253Sjoerg } 26120253Sjoerg if ((arg = getarg(args, 'i')) != NULL && (p = strtok(arg->val, ", \t")) != NULL) { 26220253Sjoerg if ((cnf->min_gid = (gid_t) atoi(p)) == 0) 26320253Sjoerg cnf->min_gid = 1000; 26420253Sjoerg if ((p = strtok(NULL, " ,\t")) == NULL || (cnf->max_gid = (gid_t) atoi(p)) < cnf->min_gid) 26520253Sjoerg cnf->max_gid = 32000; 26620253Sjoerg } 26720253Sjoerg if ((arg = getarg(args, 'w')) != NULL) 26820253Sjoerg cnf->default_password = boolean_val(arg->val, cnf->default_password); 26920253Sjoerg 27020253Sjoerg arg = getarg(args, 'C'); 27120253Sjoerg if (write_userconfig(arg ? arg->val : NULL)) 27220267Sjoerg return EXIT_SUCCESS; 27330259Scharnier warn("config update"); 27420267Sjoerg return EX_IOERR; 27520253Sjoerg } 27620253Sjoerg if (mode == M_PRINT && getarg(args, 'a')) { 27720267Sjoerg int pretty = getarg(args, 'P') != NULL; 27844386Sdavidn int v7 = getarg(args, '7') != NULL; 27920253Sjoerg 28044229Sdavidn SETPWENT(); 28144229Sdavidn while ((pwd = GETPWENT()) != NULL) 28244386Sdavidn print_user(pwd, pretty, v7); 28344229Sdavidn ENDPWENT(); 28420267Sjoerg return EXIT_SUCCESS; 28520253Sjoerg } 28620253Sjoerg if ((a_name = getarg(args, 'n')) != NULL) 28744229Sdavidn pwd = GETPWNAM(pw_checkname((u_char *)a_name->val, 0)); 28820253Sjoerg a_uid = getarg(args, 'u'); 28920253Sjoerg 29020253Sjoerg if (a_uid == NULL) { 29120253Sjoerg if (a_name == NULL) 29230259Scharnier errx(EX_DATAERR, "user name or id required"); 29320253Sjoerg 29420253Sjoerg /* 29520253Sjoerg * Determine whether 'n' switch is name or uid - we don't 29620253Sjoerg * really don't really care which we have, but we need to 29720253Sjoerg * know. 29820253Sjoerg */ 29943780Sdes if (mode != M_ADD && pwd == NULL 30043780Sdes && strspn(a_name->val, "0123456789") == strlen(a_name->val) 30143780Sdes && atoi(a_name->val) > 0) { /* Assume uid */ 30220253Sjoerg (a_uid = a_name)->ch = 'u'; 30320253Sjoerg a_name = NULL; 30420253Sjoerg } 30520253Sjoerg } 30620253Sjoerg /* 30720253Sjoerg * Update, delete & print require that the user exists 30820253Sjoerg */ 30952512Sdavidn if (mode == M_UPDATE || mode == M_DELETE || 31052512Sdavidn mode == M_PRINT || mode == M_LOCK || mode == M_UNLOCK) { 31120253Sjoerg if (a_name == NULL && pwd == NULL) /* Try harder */ 31244229Sdavidn pwd = GETPWUID(atoi(a_uid->val)); 31320253Sjoerg 31420253Sjoerg if (pwd == NULL) { 31520253Sjoerg if (mode == M_PRINT && getarg(args, 'F')) { 31620253Sjoerg fakeuser.pw_name = a_name ? a_name->val : "nouser"; 31720253Sjoerg fakeuser.pw_uid = a_uid ? (uid_t) atol(a_uid->val) : -1; 31844386Sdavidn return print_user(&fakeuser, 31944386Sdavidn getarg(args, 'P') != NULL, 32044386Sdavidn getarg(args, '7') != NULL); 32120253Sjoerg } 32220253Sjoerg if (a_name == NULL) 32330259Scharnier errx(EX_NOUSER, "no such uid `%s'", a_uid->val); 32430259Scharnier errx(EX_NOUSER, "no such user `%s'", a_name->val); 32520253Sjoerg } 32620253Sjoerg if (a_name == NULL) /* May be needed later */ 32720253Sjoerg a_name = addarg(args, 'n', newstr(pwd->pw_name)); 32820253Sjoerg 32920253Sjoerg /* 33052512Sdavidn * The M_LOCK and M_UNLOCK functions simply add or remove 33152512Sdavidn * a "*LOCKED*" prefix from in front of the password to 33252512Sdavidn * prevent it decoding correctly, and therefore prevents 33352512Sdavidn * access. Of course, this only prevents access via 33452512Sdavidn * password authentication (not ssh, kerberos or any 33552512Sdavidn * other method that does not use the UNIX password) but 33652512Sdavidn * that is a known limitation. 33752512Sdavidn */ 33852512Sdavidn 33952512Sdavidn if (mode == M_LOCK) { 34052512Sdavidn if (strncmp(pwd->pw_passwd, locked_str, sizeof(locked_str)-1) == 0) 34152512Sdavidn errx(EX_DATAERR, "user '%s' is already locked", pwd->pw_name); 34252512Sdavidn passtmp = malloc(strlen(pwd->pw_passwd) + sizeof(locked_str)); 34352512Sdavidn if (passtmp == NULL) /* disaster */ 34452512Sdavidn errx(EX_UNAVAILABLE, "out of memory"); 34552512Sdavidn strcpy(passtmp, locked_str); 34652512Sdavidn strcat(passtmp, pwd->pw_passwd); 34752512Sdavidn pwd->pw_passwd = passtmp; 34852512Sdavidn } else if (mode == M_UNLOCK) { 34952512Sdavidn if (strncmp(pwd->pw_passwd, locked_str, sizeof(locked_str)-1) != 0) 35052512Sdavidn errx(EX_DATAERR, "user '%s' is not locked", pwd->pw_name); 35152512Sdavidn pwd->pw_passwd += sizeof(locked_str)-1; 35252512Sdavidn } 35352512Sdavidn 35452512Sdavidn /* 35520253Sjoerg * Handle deletions now 35620253Sjoerg */ 35720253Sjoerg if (mode == M_DELETE) { 35820253Sjoerg char file[MAXPATHLEN]; 35920253Sjoerg char home[MAXPATHLEN]; 36020253Sjoerg uid_t uid = pwd->pw_uid; 36120253Sjoerg 36220253Sjoerg if (strcmp(pwd->pw_name, "root") == 0) 36330259Scharnier errx(EX_DATAERR, "cannot remove user 'root'"); 36420253Sjoerg 36544229Sdavidn if (!PWALTDIR()) { 36644229Sdavidn /* 36744229Sdavidn * Remove skey record from /etc/skeykeys 36844229Sdavidn */ 36920747Sdavidn 37044229Sdavidn rmskey(pwd->pw_name); 37120747Sdavidn 37244229Sdavidn /* 37344229Sdavidn * Remove crontabs 37444229Sdavidn */ 37544229Sdavidn sprintf(file, "/var/cron/tabs/%s", pwd->pw_name); 37644229Sdavidn if (access(file, F_OK) == 0) { 37744229Sdavidn sprintf(file, "crontab -u %s -r", pwd->pw_name); 37844229Sdavidn system(file); 37944229Sdavidn } 38020253Sjoerg } 38120253Sjoerg /* 38220253Sjoerg * Save these for later, since contents of pwd may be 38320253Sjoerg * invalidated by deletion 38420253Sjoerg */ 38520253Sjoerg sprintf(file, "%s/%s", _PATH_MAILDIR, pwd->pw_name); 38620253Sjoerg strncpy(home, pwd->pw_dir, sizeof home); 38720253Sjoerg home[sizeof home - 1] = '\0'; 38820253Sjoerg 38952502Sdavidn rc = delpwent(pwd); 39052502Sdavidn if (rc == -1) 39152502Sdavidn err(EX_IOERR, "user '%s' does not exist", pwd->pw_name); 39252502Sdavidn else if (rc != 0) { 39352502Sdavidn warnc(rc, "passwd update"); 39452502Sdavidn return EX_IOERR; 39552502Sdavidn } 39621330Sdavidn 39752502Sdavidn if (cnf->nispasswd && *cnf->nispasswd=='/') { 39852502Sdavidn rc = delnispwent(cnf->nispasswd, a_name->val); 39952502Sdavidn if (rc == -1) 40052502Sdavidn warnx("WARNING: user '%s' does not exist in NIS passwd", pwd->pw_name); 40152502Sdavidn else if (rc != 0) 40252502Sdavidn warnc(rc, "WARNING: NIS passwd update"); 40352502Sdavidn /* non-fatal */ 40452502Sdavidn } 40552502Sdavidn 40620253Sjoerg editgroups(a_name->val, NULL); 40720253Sjoerg 40820253Sjoerg pw_log(cnf, mode, W_USER, "%s(%ld) account removed", a_name->val, (long) uid); 40920253Sjoerg 41044229Sdavidn if (!PWALTDIR()) { 41144229Sdavidn /* 41244229Sdavidn * Remove mail file 41344229Sdavidn */ 41444229Sdavidn remove(file); 41520253Sjoerg 41644229Sdavidn /* 41744229Sdavidn * Remove at jobs 41844229Sdavidn */ 41944229Sdavidn if (getpwuid(uid) == NULL) 42044229Sdavidn rmat(uid); 42120253Sjoerg 42244229Sdavidn /* 42344229Sdavidn * Remove home directory and contents 42444229Sdavidn */ 42544229Sdavidn if (getarg(args, 'r') != NULL && *home == '/' && getpwuid(uid) == NULL) { 42644229Sdavidn if (stat(home, &st) != -1) { 42744229Sdavidn rm_r(home, uid); 42844229Sdavidn pw_log(cnf, mode, W_USER, "%s(%ld) home '%s' %sremoved", 42944229Sdavidn a_name->val, (long) uid, home, 43044229Sdavidn stat(home, &st) == -1 ? "" : "not completely "); 43144229Sdavidn } 43220253Sjoerg } 43320253Sjoerg } 43420267Sjoerg return EXIT_SUCCESS; 43520253Sjoerg } else if (mode == M_PRINT) 43644386Sdavidn return print_user(pwd, 43744386Sdavidn getarg(args, 'P') != NULL, 43844386Sdavidn getarg(args, '7') != NULL); 43920253Sjoerg 44020253Sjoerg /* 44120253Sjoerg * The rest is edit code 44220253Sjoerg */ 44320253Sjoerg if ((arg = getarg(args, 'l')) != NULL) { 44420253Sjoerg if (strcmp(pwd->pw_name, "root") == 0) 44530259Scharnier errx(EX_DATAERR, "can't rename `root' account"); 44620679Sdavidn pwd->pw_name = pw_checkname((u_char *)arg->val, 0); 44720253Sjoerg } 44820253Sjoerg if ((arg = getarg(args, 'u')) != NULL && isdigit(*arg->val)) { 44920253Sjoerg pwd->pw_uid = (uid_t) atol(arg->val); 45020253Sjoerg if (pwd->pw_uid != 0 && strcmp(pwd->pw_name, "root") == 0) 45130259Scharnier errx(EX_DATAERR, "can't change uid of `root' account"); 45220253Sjoerg if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0) 45330259Scharnier warnx("WARNING: account `%s' will have a uid of 0 (superuser access!)", pwd->pw_name); 45420253Sjoerg } 45520253Sjoerg if ((arg = getarg(args, 'g')) != NULL && pwd->pw_uid != 0) /* Already checked this */ 45644229Sdavidn pwd->pw_gid = (gid_t) GETGRNAM(cnf->default_group)->gr_gid; 45720253Sjoerg 45820253Sjoerg if ((arg = getarg(args, 'p')) != NULL) { 45920253Sjoerg if (*arg->val == '\0' || strcmp(arg->val, "0") == 0) 46020253Sjoerg pwd->pw_change = 0; 46120253Sjoerg else { 46220253Sjoerg time_t now = time(NULL); 46320253Sjoerg time_t expire = parse_date(now, arg->val); 46420253Sjoerg 46520253Sjoerg if (now == expire) 46630259Scharnier errx(EX_DATAERR, "invalid password change date `%s'", arg->val); 46720253Sjoerg pwd->pw_change = expire; 46820253Sjoerg } 46920253Sjoerg } 47020267Sjoerg if ((arg = getarg(args, 'e')) != NULL) { 47120253Sjoerg if (*arg->val == '\0' || strcmp(arg->val, "0") == 0) 47220253Sjoerg pwd->pw_expire = 0; 47320253Sjoerg else { 47420253Sjoerg time_t now = time(NULL); 47520253Sjoerg time_t expire = parse_date(now, arg->val); 47620253Sjoerg 47720253Sjoerg if (now == expire) 47830259Scharnier errx(EX_DATAERR, "invalid account expiry date `%s'", arg->val); 47920253Sjoerg pwd->pw_expire = expire; 48020253Sjoerg } 48120253Sjoerg } 48220253Sjoerg if ((arg = getarg(args, 's')) != NULL) 48320253Sjoerg pwd->pw_shell = shell_path(cnf->shelldir, cnf->shells, arg->val); 48420253Sjoerg 48520253Sjoerg if (getarg(args, 'L')) 48620253Sjoerg pwd->pw_class = cnf->default_class; 48720253Sjoerg 48820747Sdavidn if ((arg = getarg(args, 'd')) != NULL) { 48920747Sdavidn if (stat(pwd->pw_dir = arg->val, &st) == -1) { 49020747Sdavidn if (getarg(args, 'm') == NULL && strcmp(pwd->pw_dir, "/nonexistent") != 0) 49130259Scharnier warnx("WARNING: home `%s' does not exist", pwd->pw_dir); 49220747Sdavidn } else if (!S_ISDIR(st.st_mode)) 49330259Scharnier warnx("WARNING: home `%s' is not a directory", pwd->pw_dir); 49420747Sdavidn } 49520747Sdavidn 49620267Sjoerg if ((arg = getarg(args, 'w')) != NULL && getarg(args, 'h') == NULL) 49720267Sjoerg pwd->pw_passwd = pw_password(cnf, args, pwd->pw_name); 49820267Sjoerg 49920253Sjoerg } else { 50020253Sjoerg if (a_name == NULL) /* Required */ 50130259Scharnier errx(EX_DATAERR, "login name required"); 50244229Sdavidn else if ((pwd = GETPWNAM(a_name->val)) != NULL) /* Exists */ 50330259Scharnier errx(EX_DATAERR, "login name `%s' already exists", a_name->val); 50420253Sjoerg 50520253Sjoerg /* 50620253Sjoerg * Now, set up defaults for a new user 50720253Sjoerg */ 50820253Sjoerg pwd = &fakeuser; 50920253Sjoerg pwd->pw_name = a_name->val; 51020253Sjoerg pwd->pw_class = cnf->default_class ? cnf->default_class : ""; 51120253Sjoerg pwd->pw_passwd = pw_password(cnf, args, pwd->pw_name); 51220253Sjoerg pwd->pw_uid = pw_uidpolicy(cnf, args); 51320253Sjoerg pwd->pw_gid = pw_gidpolicy(cnf, args, pwd->pw_name, (gid_t) pwd->pw_uid); 51420253Sjoerg pwd->pw_change = pw_pwdpolicy(cnf, args); 51520253Sjoerg pwd->pw_expire = pw_exppolicy(cnf, args); 51620253Sjoerg pwd->pw_dir = pw_homepolicy(cnf, args, pwd->pw_name); 51720253Sjoerg pwd->pw_shell = pw_shellpolicy(cnf, args, NULL); 51820253Sjoerg 51920253Sjoerg if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0) 52030259Scharnier warnx("WARNING: new account `%s' has a uid of 0 (superuser access!)", pwd->pw_name); 52120253Sjoerg } 52220253Sjoerg 52320253Sjoerg /* 52420253Sjoerg * Shared add/edit code 52520253Sjoerg */ 52620253Sjoerg if ((arg = getarg(args, 'c')) != NULL) 52720679Sdavidn pwd->pw_gecos = pw_checkname((u_char *)arg->val, 1); 52820253Sjoerg 52920253Sjoerg if ((arg = getarg(args, 'h')) != NULL) { 53020253Sjoerg if (strcmp(arg->val, "-") == 0) 53120253Sjoerg pwd->pw_passwd = "*"; /* No access */ 53220253Sjoerg else { 53320253Sjoerg int fd = atoi(arg->val); 53420253Sjoerg int b; 53520253Sjoerg int istty = isatty(fd); 53620253Sjoerg struct termios t; 53720253Sjoerg 53820253Sjoerg if (istty) { 53920253Sjoerg if (tcgetattr(fd, &t) == -1) 54020253Sjoerg istty = 0; 54120253Sjoerg else { 54220253Sjoerg struct termios n = t; 54320253Sjoerg 54420253Sjoerg /* Disable echo */ 54520253Sjoerg n.c_lflag &= ~(ECHO); 54620253Sjoerg tcsetattr(fd, TCSANOW, &n); 54720253Sjoerg printf("%sassword for user %s:", (mode == M_UPDATE) ? "New p" : "P", pwd->pw_name); 54820253Sjoerg fflush(stdout); 54920253Sjoerg } 55020253Sjoerg } 55120253Sjoerg b = read(fd, line, sizeof(line) - 1); 55220253Sjoerg if (istty) { /* Restore state */ 55320253Sjoerg tcsetattr(fd, TCSANOW, &t); 55420253Sjoerg fputc('\n', stdout); 55520253Sjoerg fflush(stdout); 55620253Sjoerg } 55720253Sjoerg if (b < 0) { 55830259Scharnier warn("-h file descriptor"); 55920267Sjoerg return EX_IOERR; 56020253Sjoerg } 56120253Sjoerg line[b] = '\0'; 56220253Sjoerg if ((p = strpbrk(line, " \t\r\n")) != NULL) 56320253Sjoerg *p = '\0'; 56420253Sjoerg if (!*line) 56530259Scharnier errx(EX_DATAERR, "empty password read on file descriptor %d", fd); 56620253Sjoerg pwd->pw_passwd = pw_pwcrypt(line); 56720253Sjoerg } 56820253Sjoerg } 56920267Sjoerg 57020267Sjoerg /* 57120267Sjoerg * Special case: -N only displays & exits 57220267Sjoerg */ 57320267Sjoerg if (getarg(args, 'N') != NULL) 57444386Sdavidn return print_user(pwd, 57544386Sdavidn getarg(args, 'P') != NULL, 57644386Sdavidn getarg(args, '7') != NULL); 57720267Sjoerg 57821330Sdavidn if (mode == M_ADD) { 57952502Sdavidn rc = addpwent(pwd); 58052502Sdavidn if (rc == -1) { 58152502Sdavidn warnx("user '%s' already exists", pwd->pw_name); 58252502Sdavidn return EX_IOERR; 58352502Sdavidn } else if (rc != 0) { 58452502Sdavidn warnc(rc, "passwd file update"); 58552502Sdavidn return EX_IOERR; 58652502Sdavidn } 58752502Sdavidn if (cnf->nispasswd && *cnf->nispasswd=='/') { 58852502Sdavidn rc = addnispwent(cnf->nispasswd, pwd); 58952502Sdavidn if (rc == -1) 59052502Sdavidn warnx("User '%s' already exists in NIS passwd", pwd->pw_name); 59152502Sdavidn else 59252502Sdavidn warnc(rc, "NIS passwd update"); 59352502Sdavidn /* NOTE: we treat NIS-only update errors as non-fatal */ 59452502Sdavidn } 59552512Sdavidn } else if (mode == M_UPDATE || mode == M_LOCK || mode == M_UNLOCK) { 59652502Sdavidn rc = chgpwent(a_name->val, pwd); 59752502Sdavidn if (rc == -1) { 59852502Sdavidn warnx("user '%s' does not exist (NIS?)", pwd->pw_name); 59952502Sdavidn return EX_IOERR; 60052502Sdavidn } else if (rc != 0) { 60152502Sdavidn warnc(rc, "passwd file update"); 60252502Sdavidn return EX_IOERR; 60352502Sdavidn } 60452502Sdavidn if ( cnf->nispasswd && *cnf->nispasswd=='/') { 60552502Sdavidn rc = chgnispwent(cnf->nispasswd, a_name->val, pwd); 60652502Sdavidn if (rc == -1) 60752502Sdavidn warn("User '%s' not found in NIS passwd", pwd->pw_name); 60852502Sdavidn else 60952502Sdavidn warnc(rc, "NIS passwd update"); 61052502Sdavidn /* NOTE: NIS-only update errors are not fatal */ 61152502Sdavidn } 61221330Sdavidn } 61321330Sdavidn 61420253Sjoerg /* 61520253Sjoerg * Ok, user is created or changed - now edit group file 61620253Sjoerg */ 61720253Sjoerg 61820253Sjoerg if (mode == M_ADD || getarg(args, 'G') != NULL) 61920253Sjoerg editgroups(pwd->pw_name, cnf->groups); 62020253Sjoerg 62120253Sjoerg /* pwd may have been invalidated */ 62244229Sdavidn if ((pwd = GETPWNAM(a_name->val)) == NULL) 62330259Scharnier errx(EX_NOUSER, "user '%s' disappeared during update", a_name->val); 62420253Sjoerg 62544229Sdavidn grp = GETGRGID(pwd->pw_gid); 62620253Sjoerg pw_log(cnf, mode, W_USER, "%s(%ld):%s(%d):%s:%s:%s", 62720253Sjoerg pwd->pw_name, (long) pwd->pw_uid, 62820253Sjoerg grp ? grp->gr_name : "unknown", (long) (grp ? grp->gr_gid : -1), 62920253Sjoerg pwd->pw_gecos, pwd->pw_dir, pwd->pw_shell); 63020253Sjoerg 63120253Sjoerg /* 63220253Sjoerg * If adding, let's touch and chown the user's mail file. This is not 63320253Sjoerg * strictly necessary under BSD with a 0755 maildir but it also 63420253Sjoerg * doesn't hurt anything to create the empty mailfile 63520253Sjoerg */ 63620253Sjoerg if (mode == M_ADD) { 63720253Sjoerg FILE *fp; 63820253Sjoerg 63944229Sdavidn if (!PWALTDIR()) { 64044229Sdavidn sprintf(line, "%s/%s", _PATH_MAILDIR, pwd->pw_name); 64144229Sdavidn close(open(line, O_RDWR | O_CREAT, 0600)); /* Preserve contents & 64244229Sdavidn * mtime */ 64344229Sdavidn chown(line, pwd->pw_uid, pwd->pw_gid); 64420253Sjoerg 64544229Sdavidn /* 64644229Sdavidn * Send mail to the new user as well, if we are asked to 64744229Sdavidn */ 64844229Sdavidn if (cnf->newmail && *cnf->newmail && (fp = fopen(cnf->newmail, "r")) != NULL) { 64944229Sdavidn FILE *pfp = popen(_PATH_SENDMAIL " -t", "w"); 65020253Sjoerg 65144229Sdavidn if (pfp == NULL) 65244229Sdavidn warn("sendmail"); 65344229Sdavidn else { 65444229Sdavidn fprintf(pfp, "From: root\n" "To: %s\n" "Subject: Welcome!\n\n", pwd->pw_name); 65544229Sdavidn while (fgets(line, sizeof(line), fp) != NULL) { 65644229Sdavidn /* Do substitutions? */ 65744229Sdavidn fputs(line, pfp); 65844229Sdavidn } 65944229Sdavidn pclose(pfp); 66044229Sdavidn pw_log(cnf, mode, W_USER, "%s(%ld) new user mail sent", 66144229Sdavidn pwd->pw_name, (long) pwd->pw_uid); 66220253Sjoerg } 66344229Sdavidn fclose(fp); 66420253Sjoerg } 66520253Sjoerg } 66620253Sjoerg } 66720253Sjoerg /* 66820253Sjoerg * Finally, let's create and populate the user's home directory. Note 66920253Sjoerg * that this also `works' for editing users if -m is used, but 67020253Sjoerg * existing files will *not* be overwritten. 67120253Sjoerg */ 67244229Sdavidn if (!PWALTDIR() && getarg(args, 'm') != NULL && pwd->pw_dir && *pwd->pw_dir == '/' && pwd->pw_dir[1]) { 67320253Sjoerg copymkdir(pwd->pw_dir, cnf->dotdir, 0755, pwd->pw_uid, pwd->pw_gid); 67420253Sjoerg pw_log(cnf, mode, W_USER, "%s(%ld) home %s made", 67520253Sjoerg pwd->pw_name, (long) pwd->pw_uid, pwd->pw_dir); 67620253Sjoerg } 67720267Sjoerg return EXIT_SUCCESS; 67820253Sjoerg} 67920253Sjoerg 68020253Sjoerg 68120253Sjoergstatic uid_t 68220253Sjoergpw_uidpolicy(struct userconf * cnf, struct cargs * args) 68320253Sjoerg{ 68420253Sjoerg struct passwd *pwd; 68520253Sjoerg uid_t uid = (uid_t) - 1; 68620253Sjoerg struct carg *a_uid = getarg(args, 'u'); 68720253Sjoerg 68820253Sjoerg /* 68920253Sjoerg * Check the given uid, if any 69020253Sjoerg */ 69120253Sjoerg if (a_uid != NULL) { 69220253Sjoerg uid = (uid_t) atol(a_uid->val); 69320253Sjoerg 69444229Sdavidn if ((pwd = GETPWUID(uid)) != NULL && getarg(args, 'o') == NULL) 69530259Scharnier errx(EX_DATAERR, "uid `%ld' has already been allocated", (long) pwd->pw_uid); 69620253Sjoerg } else { 69720253Sjoerg struct bitmap bm; 69820253Sjoerg 69920253Sjoerg /* 70020253Sjoerg * We need to allocate the next available uid under one of 70120253Sjoerg * two policies a) Grab the first unused uid b) Grab the 70220253Sjoerg * highest possible unused uid 70320253Sjoerg */ 70420253Sjoerg if (cnf->min_uid >= cnf->max_uid) { /* Sanity 70520253Sjoerg * claus^H^H^H^Hheck */ 70620253Sjoerg cnf->min_uid = 1000; 70720253Sjoerg cnf->max_uid = 32000; 70820253Sjoerg } 70920253Sjoerg bm = bm_alloc(cnf->max_uid - cnf->min_uid + 1); 71020253Sjoerg 71120253Sjoerg /* 71220253Sjoerg * Now, let's fill the bitmap from the password file 71320253Sjoerg */ 71444229Sdavidn SETPWENT(); 71544229Sdavidn while ((pwd = GETPWENT()) != NULL) 71644229Sdavidn if (pwd->pw_uid >= (uid_t) cnf->min_uid && pwd->pw_uid <= (uid_t) cnf->max_uid) 71720253Sjoerg bm_setbit(&bm, pwd->pw_uid - cnf->min_uid); 71844229Sdavidn ENDPWENT(); 71920253Sjoerg 72020253Sjoerg /* 72120253Sjoerg * Then apply the policy, with fallback to reuse if necessary 72220253Sjoerg */ 72320253Sjoerg if (cnf->reuse_uids || (uid = (uid_t) (bm_lastset(&bm) + cnf->min_uid + 1)) > cnf->max_uid) 72420253Sjoerg uid = (uid_t) (bm_firstunset(&bm) + cnf->min_uid); 72520253Sjoerg 72620253Sjoerg /* 72720253Sjoerg * Another sanity check 72820253Sjoerg */ 72920253Sjoerg if (uid < cnf->min_uid || uid > cnf->max_uid) 73030259Scharnier errx(EX_SOFTWARE, "unable to allocate a new uid - range fully used"); 73120253Sjoerg bm_dealloc(&bm); 73220253Sjoerg } 73320253Sjoerg return uid; 73420253Sjoerg} 73520253Sjoerg 73620253Sjoerg 73720253Sjoergstatic uid_t 73820253Sjoergpw_gidpolicy(struct userconf * cnf, struct cargs * args, char *nam, gid_t prefer) 73920253Sjoerg{ 74020253Sjoerg struct group *grp; 74120253Sjoerg gid_t gid = (uid_t) - 1; 74220253Sjoerg struct carg *a_gid = getarg(args, 'g'); 74320253Sjoerg 74420253Sjoerg /* 74520253Sjoerg * If no arg given, see if default can help out 74620253Sjoerg */ 74720253Sjoerg if (a_gid == NULL && cnf->default_group && *cnf->default_group) 74820253Sjoerg a_gid = addarg(args, 'g', cnf->default_group); 74920253Sjoerg 75020253Sjoerg /* 75120253Sjoerg * Check the given gid, if any 75220253Sjoerg */ 75344229Sdavidn SETGRENT(); 75420253Sjoerg if (a_gid != NULL) { 75544229Sdavidn if ((grp = GETGRNAM(a_gid->val)) == NULL) { 75620253Sjoerg gid = (gid_t) atol(a_gid->val); 75744229Sdavidn if ((gid == 0 && !isdigit(*a_gid->val)) || (grp = GETGRGID(gid)) == NULL) 75830259Scharnier errx(EX_NOUSER, "group `%s' is not defined", a_gid->val); 75920253Sjoerg } 76020253Sjoerg gid = grp->gr_gid; 76144229Sdavidn } else if ((grp = GETGRNAM(nam)) != NULL && grp->gr_mem[0] == NULL) { 76220267Sjoerg gid = grp->gr_gid; /* Already created? Use it anyway... */ 76320253Sjoerg } else { 76420253Sjoerg struct cargs grpargs; 76520253Sjoerg char tmp[32]; 76620253Sjoerg 76720253Sjoerg LIST_INIT(&grpargs); 76820253Sjoerg addarg(&grpargs, 'n', nam); 76920253Sjoerg 77020253Sjoerg /* 77120253Sjoerg * We need to auto-create a group with the user's name. We 77220253Sjoerg * can send all the appropriate output to our sister routine 77320253Sjoerg * bit first see if we can create a group with gid==uid so we 77420253Sjoerg * can keep the user and group ids in sync. We purposely do 77520253Sjoerg * NOT check the gid range if we can force the sync. If the 77620253Sjoerg * user's name dups an existing group, then the group add 77720253Sjoerg * function will happily handle that case for us and exit. 77820253Sjoerg */ 77944229Sdavidn if (GETGRGID(prefer) == NULL) { 78020253Sjoerg sprintf(tmp, "%lu", (unsigned long) prefer); 78120253Sjoerg addarg(&grpargs, 'g', tmp); 78220253Sjoerg } 78320267Sjoerg if (getarg(args, 'N')) 78420267Sjoerg { 78520267Sjoerg addarg(&grpargs, 'N', NULL); 78620267Sjoerg addarg(&grpargs, 'q', NULL); 78720267Sjoerg gid = pw_group(cnf, M_NEXT, &grpargs); 78820267Sjoerg } 78920267Sjoerg else 79020267Sjoerg { 79120267Sjoerg pw_group(cnf, M_ADD, &grpargs); 79244229Sdavidn if ((grp = GETGRNAM(nam)) != NULL) 79320267Sjoerg gid = grp->gr_gid; 79420267Sjoerg } 79520253Sjoerg a_gid = grpargs.lh_first; 79620253Sjoerg while (a_gid != NULL) { 79720253Sjoerg struct carg *t = a_gid->list.le_next; 79820253Sjoerg LIST_REMOVE(a_gid, list); 79920253Sjoerg a_gid = t; 80020253Sjoerg } 80120253Sjoerg } 80244229Sdavidn ENDGRENT(); 80320253Sjoerg return gid; 80420253Sjoerg} 80520253Sjoerg 80620253Sjoerg 80720253Sjoergstatic time_t 80820253Sjoergpw_pwdpolicy(struct userconf * cnf, struct cargs * args) 80920253Sjoerg{ 81020253Sjoerg time_t result = 0; 81120253Sjoerg time_t now = time(NULL); 81227831Sdavidn struct carg *arg = getarg(args, 'p'); 81320253Sjoerg 81420253Sjoerg if (arg != NULL) { 81520253Sjoerg if ((result = parse_date(now, arg->val)) == now) 81630259Scharnier errx(EX_DATAERR, "invalid date/time `%s'", arg->val); 81720253Sjoerg } else if (cnf->password_days > 0) 81820253Sjoerg result = now + ((long) cnf->password_days * 86400L); 81920253Sjoerg return result; 82020253Sjoerg} 82120253Sjoerg 82220253Sjoerg 82320253Sjoergstatic time_t 82420253Sjoergpw_exppolicy(struct userconf * cnf, struct cargs * args) 82520253Sjoerg{ 82620253Sjoerg time_t result = 0; 82720253Sjoerg time_t now = time(NULL); 82820253Sjoerg struct carg *arg = getarg(args, 'e'); 82920253Sjoerg 83020253Sjoerg if (arg != NULL) { 83120253Sjoerg if ((result = parse_date(now, arg->val)) == now) 83230259Scharnier errx(EX_DATAERR, "invalid date/time `%s'", arg->val); 83320253Sjoerg } else if (cnf->expire_days > 0) 83420253Sjoerg result = now + ((long) cnf->expire_days * 86400L); 83520253Sjoerg return result; 83620253Sjoerg} 83720253Sjoerg 83820253Sjoerg 83920253Sjoergstatic char * 84020253Sjoergpw_homepolicy(struct userconf * cnf, struct cargs * args, char const * user) 84120253Sjoerg{ 84220253Sjoerg struct carg *arg = getarg(args, 'd'); 84320253Sjoerg 84420253Sjoerg if (arg) 84520253Sjoerg return arg->val; 84620253Sjoerg else { 84720253Sjoerg static char home[128]; 84820253Sjoerg 84920253Sjoerg if (cnf->home == NULL || *cnf->home == '\0') 85030259Scharnier errx(EX_CONFIG, "no base home directory set"); 85120253Sjoerg sprintf(home, "%s/%s", cnf->home, user); 85220253Sjoerg return home; 85320253Sjoerg } 85420253Sjoerg} 85520253Sjoerg 85620253Sjoergstatic char * 85720253Sjoergshell_path(char const * path, char *shells[], char *sh) 85820253Sjoerg{ 85920253Sjoerg if (sh != NULL && (*sh == '/' || *sh == '\0')) 86020253Sjoerg return sh; /* specified full path or forced none */ 86120253Sjoerg else { 86220253Sjoerg char *p; 86320253Sjoerg char paths[_UC_MAXLINE]; 86420253Sjoerg 86520253Sjoerg /* 86620253Sjoerg * We need to search paths 86720253Sjoerg */ 86820253Sjoerg strncpy(paths, path, sizeof paths); 86920253Sjoerg paths[sizeof paths - 1] = '\0'; 87020253Sjoerg for (p = strtok(paths, ": \t\r\n"); p != NULL; p = strtok(NULL, ": \t\r\n")) { 87120253Sjoerg int i; 87220253Sjoerg static char shellpath[256]; 87320253Sjoerg 87420253Sjoerg if (sh != NULL) { 87520253Sjoerg sprintf(shellpath, "%s/%s", p, sh); 87620253Sjoerg if (access(shellpath, X_OK) == 0) 87720253Sjoerg return shellpath; 87820253Sjoerg } else 87920253Sjoerg for (i = 0; i < _UC_MAXSHELLS && shells[i] != NULL; i++) { 88020253Sjoerg sprintf(shellpath, "%s/%s", p, shells[i]); 88120253Sjoerg if (access(shellpath, X_OK) == 0) 88220253Sjoerg return shellpath; 88320253Sjoerg } 88420253Sjoerg } 88520253Sjoerg if (sh == NULL) 88630259Scharnier errx(EX_OSFILE, "can't find shell `%s' in shell paths", sh); 88730259Scharnier errx(EX_CONFIG, "no default shell available or defined"); 88820253Sjoerg return NULL; 88920253Sjoerg } 89020253Sjoerg} 89120253Sjoerg 89220253Sjoerg 89320253Sjoergstatic char * 89420253Sjoergpw_shellpolicy(struct userconf * cnf, struct cargs * args, char *newshell) 89520253Sjoerg{ 89620253Sjoerg char *sh = newshell; 89720253Sjoerg struct carg *arg = getarg(args, 's'); 89820253Sjoerg 89920253Sjoerg if (newshell == NULL && arg != NULL) 90020253Sjoerg sh = arg->val; 90120253Sjoerg return shell_path(cnf->shelldir, cnf->shells, sh ? sh : cnf->shell_default); 90220253Sjoerg} 90320253Sjoerg 90420253Sjoergstatic char const chars[] = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ."; 90520253Sjoerg 90620253Sjoergchar * 90720253Sjoergpw_pwcrypt(char *password) 90820253Sjoerg{ 90920253Sjoerg int i; 91020253Sjoerg char salt[12]; 91120253Sjoerg 91220253Sjoerg static char buf[256]; 91320253Sjoerg 91420253Sjoerg /* 91520253Sjoerg * Calculate a salt value 91620253Sjoerg */ 91724214Sache if (!randinit) { 91824214Sache randinit = 1; 91924214Sache#ifdef __FreeBSD__ 92026626Sache srandomdev(); 92126626Sache#else 92226626Sache srandom((unsigned long) (time(NULL) ^ getpid())); 92324214Sache#endif 92424214Sache } 92520253Sjoerg for (i = 0; i < 8; i++) 92620253Sjoerg salt[i] = chars[random() % 63]; 92720253Sjoerg salt[i] = '\0'; 92820253Sjoerg 92920253Sjoerg return strcpy(buf, crypt(password, salt)); 93020253Sjoerg} 93120253Sjoerg 93220590Sdavidn#if defined(USE_MD5RAND) 93320555Sdavidnu_char * 93420590Sdavidnpw_getrand(u_char *buf, int len) /* cryptographically secure rng */ 93520555Sdavidn{ 93620590Sdavidn int i; 93720590Sdavidn for (i=0;i<len;i+=16) { 93820590Sdavidn u_char ubuf[16]; 93920590Sdavidn 94020590Sdavidn MD5_CTX md5_ctx; 94120590Sdavidn struct timeval tv, tvo; 94220590Sdavidn struct rusage ru; 94320590Sdavidn int n=0; 94420590Sdavidn int t; 94520590Sdavidn 94620590Sdavidn MD5Init (&md5_ctx); 94720590Sdavidn t=getpid(); 94820590Sdavidn MD5Update (&md5_ctx, (u_char*)&t, sizeof t); 94920590Sdavidn t=getppid(); 95020590Sdavidn MD5Update (&md5_ctx, (u_char*)&t, sizeof t); 95120590Sdavidn gettimeofday (&tvo, NULL); 95220590Sdavidn do { 95320590Sdavidn getrusage (RUSAGE_SELF, &ru); 95420590Sdavidn MD5Update (&md5_ctx, (u_char*)&ru, sizeof ru); 95520590Sdavidn gettimeofday (&tv, NULL); 95620590Sdavidn MD5Update (&md5_ctx, (u_char*)&tv, sizeof tv); 95720590Sdavidn } while (n++<20 || tv.tv_usec-tvo.tv_usec<100*1000); 95820590Sdavidn MD5Final (ubuf, &md5_ctx); 95920590Sdavidn memcpy(buf+i, ubuf, MIN(16, len-n)); 96020590Sdavidn } 96120590Sdavidn return buf; 96220555Sdavidn} 96320253Sjoerg 96420590Sdavidn#else /* Portable version */ 96520590Sdavidn 96620590Sdavidnstatic u_char * 96720590Sdavidnpw_getrand(u_char *buf, int len) 96820590Sdavidn{ 96920590Sdavidn int i; 97020590Sdavidn 97120590Sdavidn for (i = 0; i < len; i++) { 97224214Sache unsigned long val = random(); 97320590Sdavidn /* Use all bits in the random value */ 97420590Sdavidn buf[i]=(u_char)((val >> 24) ^ (val >> 16) ^ (val >> 8) ^ val); 97520590Sdavidn } 97620590Sdavidn return buf; 97720590Sdavidn} 97820590Sdavidn 97920590Sdavidn#endif 98020590Sdavidn 98120253Sjoergstatic char * 98220253Sjoergpw_password(struct userconf * cnf, struct cargs * args, char const * user) 98320253Sjoerg{ 98420253Sjoerg int i, l; 98520253Sjoerg char pwbuf[32]; 98620555Sdavidn u_char rndbuf[sizeof pwbuf]; 98720253Sjoerg 98820253Sjoerg switch (cnf->default_password) { 98920253Sjoerg case -1: /* Random password */ 99024214Sache if (!randinit) { 99124214Sache randinit = 1; 99224214Sache#ifdef __FreeBSD__ 99326626Sache srandomdev(); 99426626Sache#else 99526626Sache srandom((unsigned long) (time(NULL) ^ getpid())); 99624214Sache#endif 99724214Sache } 99820253Sjoerg l = (random() % 8 + 8); /* 8 - 16 chars */ 99920555Sdavidn pw_getrand(rndbuf, l); 100020253Sjoerg for (i = 0; i < l; i++) 100142245Sbillf pwbuf[i] = chars[rndbuf[i] % (sizeof(chars)-1)]; 100220253Sjoerg pwbuf[i] = '\0'; 100320253Sjoerg 100420253Sjoerg /* 100520253Sjoerg * We give this information back to the user 100620253Sjoerg */ 100720267Sjoerg if (getarg(args, 'h') == NULL && getarg(args, 'N') == NULL) { 100820712Sdavidn if (isatty(1)) 100920712Sdavidn printf("Password for '%s' is: ", user); 101020253Sjoerg printf("%s\n", pwbuf); 101120253Sjoerg fflush(stdout); 101220253Sjoerg } 101320253Sjoerg break; 101420253Sjoerg 101520253Sjoerg case -2: /* No password at all! */ 101620253Sjoerg return ""; 101720253Sjoerg 101820253Sjoerg case 0: /* No login - default */ 101920253Sjoerg default: 102020253Sjoerg return "*"; 102120253Sjoerg 102220253Sjoerg case 1: /* user's name */ 102320253Sjoerg strncpy(pwbuf, user, sizeof pwbuf); 102420253Sjoerg pwbuf[sizeof pwbuf - 1] = '\0'; 102520253Sjoerg break; 102620253Sjoerg } 102720253Sjoerg return pw_pwcrypt(pwbuf); 102820253Sjoerg} 102920253Sjoerg 103020253Sjoerg 103120253Sjoergstatic int 103244386Sdavidnprint_user(struct passwd * pwd, int pretty, int v7) 103320253Sjoerg{ 103420253Sjoerg if (!pretty) { 103520253Sjoerg char buf[_UC_MAXLINE]; 103620253Sjoerg 103744386Sdavidn fmtpwentry(buf, pwd, v7 ? PWF_PASSWD : PWF_STANDARD); 103820253Sjoerg fputs(buf, stdout); 103920253Sjoerg } else { 104020267Sjoerg int j; 104120253Sjoerg char *p; 104244229Sdavidn struct group *grp = GETGRGID(pwd->pw_gid); 104320253Sjoerg char uname[60] = "User &", office[60] = "[None]", 104420253Sjoerg wphone[60] = "[None]", hphone[60] = "[None]"; 104520590Sdavidn char acexpire[32] = "[None]", pwexpire[32] = "[None]"; 104620590Sdavidn struct tm * tptr; 104720253Sjoerg 104820253Sjoerg if ((p = strtok(pwd->pw_gecos, ",")) != NULL) { 104920253Sjoerg strncpy(uname, p, sizeof uname); 105020253Sjoerg uname[sizeof uname - 1] = '\0'; 105120253Sjoerg if ((p = strtok(NULL, ",")) != NULL) { 105220253Sjoerg strncpy(office, p, sizeof office); 105320253Sjoerg office[sizeof office - 1] = '\0'; 105420253Sjoerg if ((p = strtok(NULL, ",")) != NULL) { 105520253Sjoerg strncpy(wphone, p, sizeof wphone); 105620253Sjoerg wphone[sizeof wphone - 1] = '\0'; 105720253Sjoerg if ((p = strtok(NULL, "")) != NULL) { 105820253Sjoerg strncpy(hphone, p, sizeof hphone); 105920253Sjoerg hphone[sizeof hphone - 1] = '\0'; 106020253Sjoerg } 106120253Sjoerg } 106220253Sjoerg } 106320253Sjoerg } 106420253Sjoerg /* 106520253Sjoerg * Handle '&' in gecos field 106620253Sjoerg */ 106720253Sjoerg if ((p = strchr(uname, '&')) != NULL) { 106820253Sjoerg int l = strlen(pwd->pw_name); 106920253Sjoerg int m = strlen(p); 107020253Sjoerg 107120253Sjoerg memmove(p + l, p + 1, m); 107220253Sjoerg memmove(p, pwd->pw_name, l); 107320253Sjoerg *p = (char) toupper(*p); 107420253Sjoerg } 107520590Sdavidn if (pwd->pw_expire > (time_t)0 && (tptr = localtime(&pwd->pw_expire)) != NULL) 107620590Sdavidn strftime(acexpire, sizeof acexpire, "%c", tptr); 107720590Sdavidn if (pwd->pw_change > (time_t)9 && (tptr = localtime(&pwd->pw_change)) != NULL) 107820590Sdavidn strftime(pwexpire, sizeof pwexpire, "%c", tptr); 107922394Sdavidn printf("Login Name: %-15s #%-12ld Group: %-15s #%ld\n" 108020747Sdavidn " Full Name: %s\n" 108120747Sdavidn " Home: %-26.26s Class: %s\n" 108220747Sdavidn " Shell: %-26.26s Office: %s\n" 108320747Sdavidn "Work Phone: %-26.26s Home Phone: %s\n" 108420747Sdavidn "Acc Expire: %-26.26s Pwd Expire: %s\n", 108520253Sjoerg pwd->pw_name, (long) pwd->pw_uid, 108620253Sjoerg grp ? grp->gr_name : "(invalid)", (long) pwd->pw_gid, 108720253Sjoerg uname, pwd->pw_dir, pwd->pw_class, 108820590Sdavidn pwd->pw_shell, office, wphone, hphone, 108920590Sdavidn acexpire, pwexpire); 109044229Sdavidn SETGRENT(); 109120267Sjoerg j = 0; 109244229Sdavidn while ((grp=GETGRENT()) != NULL) 109320267Sjoerg { 109420267Sjoerg int i = 0; 109520747Sdavidn while (grp->gr_mem[i] != NULL) 109620267Sjoerg { 109720267Sjoerg if (strcmp(grp->gr_mem[i], pwd->pw_name)==0) 109820267Sjoerg { 109920747Sdavidn printf(j++ == 0 ? " Groups: %s" : ",%s", grp->gr_name); 110020267Sjoerg break; 110120267Sjoerg } 110220267Sjoerg ++i; 110320267Sjoerg } 110420267Sjoerg } 110544229Sdavidn ENDGRENT(); 110620267Sjoerg printf("%s\n", j ? "\n" : ""); 110720253Sjoerg } 110820267Sjoerg return EXIT_SUCCESS; 110920253Sjoerg} 111020253Sjoerg 111120679Sdavidnchar * 111220679Sdavidnpw_checkname(u_char *name, int gecos) 111320253Sjoerg{ 111420253Sjoerg int l = 0; 111521052Sdavidn char const *notch = gecos ? ":!@" : " ,\t:+&#%$^()!@~*?<>=|\\/\""; 111620253Sjoerg 111720253Sjoerg while (name[l]) { 111821052Sdavidn if (strchr(notch, name[l]) != NULL || name[l] < ' ' || name[l] == 127 || 111921052Sdavidn (!gecos && l==0 && name[l] == '-') || /* leading '-' */ 112021052Sdavidn (!gecos && name[l] & 0x80)) /* 8-bit */ 112130259Scharnier errx(EX_DATAERR, (name[l] >= ' ' && name[l] < 127) 112230259Scharnier ? "invalid character `%c' in field" 112330259Scharnier : "invalid character 0x%02x in field", 112420325Sjoerg name[l]); 112520253Sjoerg ++l; 112620253Sjoerg } 112722394Sdavidn if (!gecos && l > LOGNAMESIZE) 112830259Scharnier errx(EX_DATAERR, "name too long `%s'", name); 112920679Sdavidn return (char *)name; 113020253Sjoerg} 113120253Sjoerg 113220253Sjoerg 113320253Sjoergstatic void 113420253Sjoergrmat(uid_t uid) 113520253Sjoerg{ 113620253Sjoerg DIR *d = opendir("/var/at/jobs"); 113720253Sjoerg 113820253Sjoerg if (d != NULL) { 113920253Sjoerg struct dirent *e; 114020253Sjoerg 114120253Sjoerg while ((e = readdir(d)) != NULL) { 114220253Sjoerg struct stat st; 114320253Sjoerg 114420253Sjoerg if (strncmp(e->d_name, ".lock", 5) != 0 && 114520253Sjoerg stat(e->d_name, &st) == 0 && 114620253Sjoerg !S_ISDIR(st.st_mode) && 114720253Sjoerg st.st_uid == uid) { 114820253Sjoerg char tmp[MAXPATHLEN]; 114920253Sjoerg 115020253Sjoerg sprintf(tmp, "/usr/bin/atrm %s", e->d_name); 115120253Sjoerg system(tmp); 115220253Sjoerg } 115320253Sjoerg } 115420253Sjoerg closedir(d); 115520253Sjoerg } 115620253Sjoerg} 115720747Sdavidn 115820747Sdavidnstatic void 115920747Sdavidnrmskey(char const * name) 116020747Sdavidn{ 116120747Sdavidn static const char etcskey[] = "/etc/skeykeys"; 116221052Sdavidn FILE *fp = fopen(etcskey, "r+"); 116320747Sdavidn 116421052Sdavidn if (fp != NULL) { 116521052Sdavidn char tmp[1024]; 116621052Sdavidn off_t atofs = 0; 116721052Sdavidn int length = strlen(name); 116820747Sdavidn 116921052Sdavidn while (fgets(tmp, sizeof tmp, fp) != NULL) { 117021052Sdavidn if (strncmp(name, tmp, length) == 0 && tmp[length]==' ') { 117121052Sdavidn if (fseek(fp, atofs, SEEK_SET) == 0) { 117221052Sdavidn fwrite("#", 1, 1, fp); /* Comment username out */ 117321052Sdavidn } 117421052Sdavidn break; 117520747Sdavidn } 117621052Sdavidn atofs = ftell(fp); 117720747Sdavidn } 117821052Sdavidn /* 117921052Sdavidn * If we got an error of any sort, don't update! 118021052Sdavidn */ 118121052Sdavidn fclose(fp); 118220747Sdavidn } 118320747Sdavidn} 118420747Sdavidn 1185