pw_user.c revision 52527
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 52527 1999-10-26 15:07:20Z 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{ 10652527Sdavidn int rc, edited = 0; 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 21020253Sjoerg if ((arg = getarg(args, 'e')) != NULL) 21120253Sjoerg cnf->expire_days = atoi(arg->val); 21220253Sjoerg 21321330Sdavidn if ((arg = getarg(args, 'y')) != NULL) 21421330Sdavidn cnf->nispasswd = arg->val; 21521330Sdavidn 21620253Sjoerg if ((arg = getarg(args, 'p')) != NULL && arg->val) 21720253Sjoerg cnf->password_days = atoi(arg->val); 21820253Sjoerg 21920253Sjoerg if ((arg = getarg(args, 'g')) != NULL) { 22020253Sjoerg p = arg->val; 22144229Sdavidn if ((grp = GETGRNAM(p)) == NULL) { 22244229Sdavidn if (!isdigit(*p) || (grp = GETGRGID((gid_t) atoi(p))) == NULL) 22330259Scharnier errx(EX_NOUSER, "group `%s' does not exist", p); 22420253Sjoerg } 22520253Sjoerg cnf->default_group = newstr(grp->gr_name); 22620253Sjoerg } 22720253Sjoerg if ((arg = getarg(args, 'L')) != NULL) 22820679Sdavidn cnf->default_class = pw_checkname((u_char *)arg->val, 0); 22920253Sjoerg 23020253Sjoerg if ((arg = getarg(args, 'G')) != NULL && arg->val) { 23152527Sdavidn int i = 0; 23220253Sjoerg 23320747Sdavidn for (p = strtok(arg->val, ", \t"); p != NULL; p = strtok(NULL, ", \t")) { 23444229Sdavidn if ((grp = GETGRNAM(p)) == NULL) { 23544229Sdavidn if (!isdigit(*p) || (grp = GETGRGID((gid_t) atoi(p))) == NULL) 23630259Scharnier errx(EX_NOUSER, "group `%s' does not exist", p); 23720253Sjoerg } 23820747Sdavidn if (extendarray(&cnf->groups, &cnf->numgroups, i + 2) != -1) 23920747Sdavidn cnf->groups[i++] = newstr(grp->gr_name); 24020253Sjoerg } 24120747Sdavidn while (i < cnf->numgroups) 24220253Sjoerg cnf->groups[i++] = NULL; 24320253Sjoerg } 24452527Sdavidn 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 } 24952527Sdavidn 25020253Sjoerg if ((arg = getarg(args, 's')) != NULL) 25120253Sjoerg cnf->shell_default = arg->val; 25220253Sjoerg 25320253Sjoerg if (mode == M_ADD && getarg(args, 'D')) { 25420253Sjoerg if (getarg(args, 'n') != NULL) 25530259Scharnier errx(EX_DATAERR, "can't combine `-D' with `-n name'"); 25620253Sjoerg if ((arg = getarg(args, 'u')) != NULL && (p = strtok(arg->val, ", \t")) != NULL) { 25720253Sjoerg if ((cnf->min_uid = (uid_t) atoi(p)) == 0) 25820253Sjoerg cnf->min_uid = 1000; 25920253Sjoerg if ((p = strtok(NULL, " ,\t")) == NULL || (cnf->max_uid = (uid_t) atoi(p)) < cnf->min_uid) 26020253Sjoerg cnf->max_uid = 32000; 26120253Sjoerg } 26220253Sjoerg if ((arg = getarg(args, 'i')) != NULL && (p = strtok(arg->val, ", \t")) != NULL) { 26320253Sjoerg if ((cnf->min_gid = (gid_t) atoi(p)) == 0) 26420253Sjoerg cnf->min_gid = 1000; 26520253Sjoerg if ((p = strtok(NULL, " ,\t")) == NULL || (cnf->max_gid = (gid_t) atoi(p)) < cnf->min_gid) 26620253Sjoerg cnf->max_gid = 32000; 26720253Sjoerg } 26820253Sjoerg if ((arg = getarg(args, 'w')) != NULL) 26920253Sjoerg cnf->default_password = boolean_val(arg->val, cnf->default_password); 27020253Sjoerg 27120253Sjoerg arg = getarg(args, 'C'); 27220253Sjoerg if (write_userconfig(arg ? arg->val : NULL)) 27320267Sjoerg return EXIT_SUCCESS; 27430259Scharnier warn("config update"); 27520267Sjoerg return EX_IOERR; 27620253Sjoerg } 27752527Sdavidn 27820253Sjoerg if (mode == M_PRINT && getarg(args, 'a')) { 27920267Sjoerg int pretty = getarg(args, 'P') != NULL; 28044386Sdavidn int v7 = getarg(args, '7') != NULL; 28120253Sjoerg 28244229Sdavidn SETPWENT(); 28344229Sdavidn while ((pwd = GETPWENT()) != NULL) 28444386Sdavidn print_user(pwd, pretty, v7); 28544229Sdavidn ENDPWENT(); 28620267Sjoerg return EXIT_SUCCESS; 28720253Sjoerg } 28852527Sdavidn 28920253Sjoerg if ((a_name = getarg(args, 'n')) != NULL) 29044229Sdavidn pwd = GETPWNAM(pw_checkname((u_char *)a_name->val, 0)); 29120253Sjoerg a_uid = getarg(args, 'u'); 29220253Sjoerg 29320253Sjoerg if (a_uid == NULL) { 29420253Sjoerg if (a_name == NULL) 29530259Scharnier errx(EX_DATAERR, "user name or id required"); 29620253Sjoerg 29720253Sjoerg /* 29820253Sjoerg * Determine whether 'n' switch is name or uid - we don't 29920253Sjoerg * really don't really care which we have, but we need to 30020253Sjoerg * know. 30120253Sjoerg */ 30243780Sdes if (mode != M_ADD && pwd == NULL 30343780Sdes && strspn(a_name->val, "0123456789") == strlen(a_name->val) 30443780Sdes && atoi(a_name->val) > 0) { /* Assume uid */ 30520253Sjoerg (a_uid = a_name)->ch = 'u'; 30620253Sjoerg a_name = NULL; 30720253Sjoerg } 30820253Sjoerg } 30952527Sdavidn 31020253Sjoerg /* 31120253Sjoerg * Update, delete & print require that the user exists 31220253Sjoerg */ 31352512Sdavidn if (mode == M_UPDATE || mode == M_DELETE || 31452512Sdavidn mode == M_PRINT || mode == M_LOCK || mode == M_UNLOCK) { 31552527Sdavidn 31620253Sjoerg if (a_name == NULL && pwd == NULL) /* Try harder */ 31744229Sdavidn pwd = GETPWUID(atoi(a_uid->val)); 31820253Sjoerg 31920253Sjoerg if (pwd == NULL) { 32020253Sjoerg if (mode == M_PRINT && getarg(args, 'F')) { 32120253Sjoerg fakeuser.pw_name = a_name ? a_name->val : "nouser"; 32220253Sjoerg fakeuser.pw_uid = a_uid ? (uid_t) atol(a_uid->val) : -1; 32344386Sdavidn return print_user(&fakeuser, 32444386Sdavidn getarg(args, 'P') != NULL, 32544386Sdavidn getarg(args, '7') != NULL); 32620253Sjoerg } 32720253Sjoerg if (a_name == NULL) 32830259Scharnier errx(EX_NOUSER, "no such uid `%s'", a_uid->val); 32930259Scharnier errx(EX_NOUSER, "no such user `%s'", a_name->val); 33020253Sjoerg } 33152527Sdavidn 33220253Sjoerg if (a_name == NULL) /* May be needed later */ 33320253Sjoerg a_name = addarg(args, 'n', newstr(pwd->pw_name)); 33420253Sjoerg 33520253Sjoerg /* 33652512Sdavidn * The M_LOCK and M_UNLOCK functions simply add or remove 33752512Sdavidn * a "*LOCKED*" prefix from in front of the password to 33852512Sdavidn * prevent it decoding correctly, and therefore prevents 33952512Sdavidn * access. Of course, this only prevents access via 34052512Sdavidn * password authentication (not ssh, kerberos or any 34152512Sdavidn * other method that does not use the UNIX password) but 34252512Sdavidn * that is a known limitation. 34352512Sdavidn */ 34452512Sdavidn 34552512Sdavidn if (mode == M_LOCK) { 34652512Sdavidn if (strncmp(pwd->pw_passwd, locked_str, sizeof(locked_str)-1) == 0) 34752512Sdavidn errx(EX_DATAERR, "user '%s' is already locked", pwd->pw_name); 34852512Sdavidn passtmp = malloc(strlen(pwd->pw_passwd) + sizeof(locked_str)); 34952512Sdavidn if (passtmp == NULL) /* disaster */ 35052512Sdavidn errx(EX_UNAVAILABLE, "out of memory"); 35152512Sdavidn strcpy(passtmp, locked_str); 35252512Sdavidn strcat(passtmp, pwd->pw_passwd); 35352512Sdavidn pwd->pw_passwd = passtmp; 35452527Sdavidn edited = 1; 35552512Sdavidn } else if (mode == M_UNLOCK) { 35652512Sdavidn if (strncmp(pwd->pw_passwd, locked_str, sizeof(locked_str)-1) != 0) 35752512Sdavidn errx(EX_DATAERR, "user '%s' is not locked", pwd->pw_name); 35852512Sdavidn pwd->pw_passwd += sizeof(locked_str)-1; 35952527Sdavidn edited = 1; 36052527Sdavidn } else if (mode == M_DELETE) { 36152527Sdavidn /* 36252527Sdavidn * Handle deletions now 36352527Sdavidn */ 36420253Sjoerg char file[MAXPATHLEN]; 36520253Sjoerg char home[MAXPATHLEN]; 36620253Sjoerg uid_t uid = pwd->pw_uid; 36720253Sjoerg 36820253Sjoerg if (strcmp(pwd->pw_name, "root") == 0) 36930259Scharnier errx(EX_DATAERR, "cannot remove user 'root'"); 37020253Sjoerg 37144229Sdavidn if (!PWALTDIR()) { 37244229Sdavidn /* 37344229Sdavidn * Remove skey record from /etc/skeykeys 37444229Sdavidn */ 37520747Sdavidn 37644229Sdavidn rmskey(pwd->pw_name); 37720747Sdavidn 37844229Sdavidn /* 37944229Sdavidn * Remove crontabs 38044229Sdavidn */ 38144229Sdavidn sprintf(file, "/var/cron/tabs/%s", pwd->pw_name); 38244229Sdavidn if (access(file, F_OK) == 0) { 38344229Sdavidn sprintf(file, "crontab -u %s -r", pwd->pw_name); 38444229Sdavidn system(file); 38544229Sdavidn } 38620253Sjoerg } 38720253Sjoerg /* 38820253Sjoerg * Save these for later, since contents of pwd may be 38920253Sjoerg * invalidated by deletion 39020253Sjoerg */ 39120253Sjoerg sprintf(file, "%s/%s", _PATH_MAILDIR, pwd->pw_name); 39220253Sjoerg strncpy(home, pwd->pw_dir, sizeof home); 39320253Sjoerg home[sizeof home - 1] = '\0'; 39420253Sjoerg 39552502Sdavidn rc = delpwent(pwd); 39652502Sdavidn if (rc == -1) 39752502Sdavidn err(EX_IOERR, "user '%s' does not exist", pwd->pw_name); 39852502Sdavidn else if (rc != 0) { 39952502Sdavidn warnc(rc, "passwd update"); 40052502Sdavidn return EX_IOERR; 40152502Sdavidn } 40221330Sdavidn 40352502Sdavidn if (cnf->nispasswd && *cnf->nispasswd=='/') { 40452502Sdavidn rc = delnispwent(cnf->nispasswd, a_name->val); 40552502Sdavidn if (rc == -1) 40652502Sdavidn warnx("WARNING: user '%s' does not exist in NIS passwd", pwd->pw_name); 40752502Sdavidn else if (rc != 0) 40852502Sdavidn warnc(rc, "WARNING: NIS passwd update"); 40952502Sdavidn /* non-fatal */ 41052502Sdavidn } 41152502Sdavidn 41220253Sjoerg editgroups(a_name->val, NULL); 41320253Sjoerg 41420253Sjoerg pw_log(cnf, mode, W_USER, "%s(%ld) account removed", a_name->val, (long) uid); 41520253Sjoerg 41644229Sdavidn if (!PWALTDIR()) { 41744229Sdavidn /* 41844229Sdavidn * Remove mail file 41944229Sdavidn */ 42044229Sdavidn remove(file); 42120253Sjoerg 42244229Sdavidn /* 42344229Sdavidn * Remove at jobs 42444229Sdavidn */ 42544229Sdavidn if (getpwuid(uid) == NULL) 42644229Sdavidn rmat(uid); 42720253Sjoerg 42844229Sdavidn /* 42944229Sdavidn * Remove home directory and contents 43044229Sdavidn */ 43144229Sdavidn if (getarg(args, 'r') != NULL && *home == '/' && getpwuid(uid) == NULL) { 43244229Sdavidn if (stat(home, &st) != -1) { 43344229Sdavidn rm_r(home, uid); 43444229Sdavidn pw_log(cnf, mode, W_USER, "%s(%ld) home '%s' %sremoved", 43544229Sdavidn a_name->val, (long) uid, home, 43644229Sdavidn stat(home, &st) == -1 ? "" : "not completely "); 43744229Sdavidn } 43820253Sjoerg } 43920253Sjoerg } 44020267Sjoerg return EXIT_SUCCESS; 44120253Sjoerg } else if (mode == M_PRINT) 44244386Sdavidn return print_user(pwd, 44344386Sdavidn getarg(args, 'P') != NULL, 44444386Sdavidn getarg(args, '7') != NULL); 44520253Sjoerg 44620253Sjoerg /* 44720253Sjoerg * The rest is edit code 44820253Sjoerg */ 44920253Sjoerg if ((arg = getarg(args, 'l')) != NULL) { 45020253Sjoerg if (strcmp(pwd->pw_name, "root") == 0) 45130259Scharnier errx(EX_DATAERR, "can't rename `root' account"); 45220679Sdavidn pwd->pw_name = pw_checkname((u_char *)arg->val, 0); 45352527Sdavidn edited = 1; 45420253Sjoerg } 45552527Sdavidn 45620253Sjoerg if ((arg = getarg(args, 'u')) != NULL && isdigit(*arg->val)) { 45720253Sjoerg pwd->pw_uid = (uid_t) atol(arg->val); 45852527Sdavidn edited = 1; 45920253Sjoerg if (pwd->pw_uid != 0 && strcmp(pwd->pw_name, "root") == 0) 46030259Scharnier errx(EX_DATAERR, "can't change uid of `root' account"); 46120253Sjoerg if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0) 46230259Scharnier warnx("WARNING: account `%s' will have a uid of 0 (superuser access!)", pwd->pw_name); 46320253Sjoerg } 46420253Sjoerg 46552527Sdavidn if ((arg = getarg(args, 'g')) != NULL && pwd->pw_uid != 0) { /* Already checked this */ 46652527Sdavidn gid_t newgid = (gid_t) GETGRNAM(cnf->default_group)->gr_gid; 46752527Sdavidn if (newgid != pwd->pw_gid) { 46852527Sdavidn edited = 1; 46952527Sdavidn pwd->pw_gid = pwd->pw_gid; 47052527Sdavidn } 47152527Sdavidn } 47252527Sdavidn 47320253Sjoerg if ((arg = getarg(args, 'p')) != NULL) { 47452527Sdavidn if (*arg->val == '\0' || strcmp(arg->val, "0") == 0) { 47552527Sdavidn if (pwd->pw_change != 0) { 47652527Sdavidn pwd->pw_change = 0; 47752527Sdavidn edited = 1; 47852527Sdavidn } 47952527Sdavidn } 48020253Sjoerg else { 48120253Sjoerg time_t now = time(NULL); 48220253Sjoerg time_t expire = parse_date(now, arg->val); 48320253Sjoerg 48420253Sjoerg if (now == expire) 48530259Scharnier errx(EX_DATAERR, "invalid password change date `%s'", arg->val); 48652527Sdavidn if (pwd->pw_change != expire) { 48752527Sdavidn pwd->pw_change = expire; 48852527Sdavidn edited = 1; 48952527Sdavidn } 49020253Sjoerg } 49120253Sjoerg } 49252527Sdavidn 49320267Sjoerg if ((arg = getarg(args, 'e')) != NULL) { 49452527Sdavidn if (*arg->val == '\0' || strcmp(arg->val, "0") == 0) { 49552527Sdavidn if (pwd->pw_expire != 0) { 49652527Sdavidn pwd->pw_expire = 0; 49752527Sdavidn edited = 1; 49852527Sdavidn } 49952527Sdavidn } 50020253Sjoerg else { 50120253Sjoerg time_t now = time(NULL); 50220253Sjoerg time_t expire = parse_date(now, arg->val); 50320253Sjoerg 50420253Sjoerg if (now == expire) 50530259Scharnier errx(EX_DATAERR, "invalid account expiry date `%s'", arg->val); 50652527Sdavidn if (pwd->pw_expire != expire) { 50752527Sdavidn pwd->pw_expire = expire; 50852527Sdavidn edited = 1; 50952527Sdavidn } 51020253Sjoerg } 51120253Sjoerg } 51220253Sjoerg 51352527Sdavidn if ((arg = getarg(args, 's')) != NULL) { 51452527Sdavidn char *shell = shell_path(cnf->shelldir, cnf->shells, arg->val); 51552527Sdavidn if (shell == NULL) 51652527Sdavidn shell = ""; 51752527Sdavidn if (strcmp(shell, pwd->pw_shell) != 0) { 51852527Sdavidn pwd->pw_shell = shell; 51952527Sdavidn edited = 1; 52052527Sdavidn } 52152527Sdavidn } 52220253Sjoerg 52352527Sdavidn if (getarg(args, 'L')) { 52452527Sdavidn if (cnf->default_class == NULL) 52552527Sdavidn cnf->default_class = ""; 52652527Sdavidn if (strcmp(pwd->pw_class, cnf->default_class) != 0) { 52752527Sdavidn pwd->pw_class = cnf->default_class; 52852527Sdavidn edited = 1; 52952527Sdavidn } 53052527Sdavidn } 53152527Sdavidn 53220747Sdavidn if ((arg = getarg(args, 'd')) != NULL) { 53320747Sdavidn if (stat(pwd->pw_dir = arg->val, &st) == -1) { 53420747Sdavidn if (getarg(args, 'm') == NULL && strcmp(pwd->pw_dir, "/nonexistent") != 0) 53530259Scharnier warnx("WARNING: home `%s' does not exist", pwd->pw_dir); 53620747Sdavidn } else if (!S_ISDIR(st.st_mode)) 53730259Scharnier warnx("WARNING: home `%s' is not a directory", pwd->pw_dir); 53820747Sdavidn } 53920747Sdavidn 54052527Sdavidn if ((arg = getarg(args, 'w')) != NULL && getarg(args, 'h') == NULL) { 54120267Sjoerg pwd->pw_passwd = pw_password(cnf, args, pwd->pw_name); 54252527Sdavidn edited = 1; 54352527Sdavidn } 54420267Sjoerg 54520253Sjoerg } else { 54652527Sdavidn 54752527Sdavidn /* 54852527Sdavidn * Add code 54952527Sdavidn */ 55052527Sdavidn 55120253Sjoerg if (a_name == NULL) /* Required */ 55230259Scharnier errx(EX_DATAERR, "login name required"); 55344229Sdavidn else if ((pwd = GETPWNAM(a_name->val)) != NULL) /* Exists */ 55430259Scharnier errx(EX_DATAERR, "login name `%s' already exists", a_name->val); 55520253Sjoerg 55620253Sjoerg /* 55720253Sjoerg * Now, set up defaults for a new user 55820253Sjoerg */ 55920253Sjoerg pwd = &fakeuser; 56020253Sjoerg pwd->pw_name = a_name->val; 56120253Sjoerg pwd->pw_class = cnf->default_class ? cnf->default_class : ""; 56220253Sjoerg pwd->pw_passwd = pw_password(cnf, args, pwd->pw_name); 56320253Sjoerg pwd->pw_uid = pw_uidpolicy(cnf, args); 56420253Sjoerg pwd->pw_gid = pw_gidpolicy(cnf, args, pwd->pw_name, (gid_t) pwd->pw_uid); 56520253Sjoerg pwd->pw_change = pw_pwdpolicy(cnf, args); 56620253Sjoerg pwd->pw_expire = pw_exppolicy(cnf, args); 56720253Sjoerg pwd->pw_dir = pw_homepolicy(cnf, args, pwd->pw_name); 56820253Sjoerg pwd->pw_shell = pw_shellpolicy(cnf, args, NULL); 56952527Sdavidn edited = 1; 57020253Sjoerg 57120253Sjoerg if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0) 57230259Scharnier warnx("WARNING: new account `%s' has a uid of 0 (superuser access!)", pwd->pw_name); 57320253Sjoerg } 57420253Sjoerg 57520253Sjoerg /* 57620253Sjoerg * Shared add/edit code 57720253Sjoerg */ 57852527Sdavidn if ((arg = getarg(args, 'c')) != NULL) { 57952527Sdavidn char *gecos = pw_checkname((u_char *)arg->val, 1); 58052527Sdavidn if (strcmp(pwd->pw_gecos, gecos) != 0) { 58152527Sdavidn pwd->pw_gecos = gecos; 58252527Sdavidn edited = 1; 58352527Sdavidn } 58452527Sdavidn } 58520253Sjoerg 58620253Sjoerg if ((arg = getarg(args, 'h')) != NULL) { 58720253Sjoerg if (strcmp(arg->val, "-") == 0) 58820253Sjoerg pwd->pw_passwd = "*"; /* No access */ 58920253Sjoerg else { 59020253Sjoerg int fd = atoi(arg->val); 59120253Sjoerg int b; 59220253Sjoerg int istty = isatty(fd); 59320253Sjoerg struct termios t; 59420253Sjoerg 59520253Sjoerg if (istty) { 59620253Sjoerg if (tcgetattr(fd, &t) == -1) 59720253Sjoerg istty = 0; 59820253Sjoerg else { 59920253Sjoerg struct termios n = t; 60020253Sjoerg 60120253Sjoerg /* Disable echo */ 60220253Sjoerg n.c_lflag &= ~(ECHO); 60320253Sjoerg tcsetattr(fd, TCSANOW, &n); 60420253Sjoerg printf("%sassword for user %s:", (mode == M_UPDATE) ? "New p" : "P", pwd->pw_name); 60520253Sjoerg fflush(stdout); 60620253Sjoerg } 60720253Sjoerg } 60820253Sjoerg b = read(fd, line, sizeof(line) - 1); 60920253Sjoerg if (istty) { /* Restore state */ 61020253Sjoerg tcsetattr(fd, TCSANOW, &t); 61120253Sjoerg fputc('\n', stdout); 61220253Sjoerg fflush(stdout); 61320253Sjoerg } 61420253Sjoerg if (b < 0) { 61530259Scharnier warn("-h file descriptor"); 61620267Sjoerg return EX_IOERR; 61720253Sjoerg } 61820253Sjoerg line[b] = '\0'; 61920253Sjoerg if ((p = strpbrk(line, " \t\r\n")) != NULL) 62020253Sjoerg *p = '\0'; 62120253Sjoerg if (!*line) 62230259Scharnier errx(EX_DATAERR, "empty password read on file descriptor %d", fd); 62320253Sjoerg pwd->pw_passwd = pw_pwcrypt(line); 62452527Sdavidn edited = 1; 62520253Sjoerg } 62620253Sjoerg } 62720267Sjoerg 62820267Sjoerg /* 62920267Sjoerg * Special case: -N only displays & exits 63020267Sjoerg */ 63120267Sjoerg if (getarg(args, 'N') != NULL) 63244386Sdavidn return print_user(pwd, 63344386Sdavidn getarg(args, 'P') != NULL, 63444386Sdavidn getarg(args, '7') != NULL); 63520267Sjoerg 63621330Sdavidn if (mode == M_ADD) { 63752527Sdavidn edited = 1; /* Always */ 63852502Sdavidn rc = addpwent(pwd); 63952502Sdavidn if (rc == -1) { 64052502Sdavidn warnx("user '%s' already exists", pwd->pw_name); 64152502Sdavidn return EX_IOERR; 64252502Sdavidn } else if (rc != 0) { 64352502Sdavidn warnc(rc, "passwd file update"); 64452502Sdavidn return EX_IOERR; 64552502Sdavidn } 64652502Sdavidn if (cnf->nispasswd && *cnf->nispasswd=='/') { 64752502Sdavidn rc = addnispwent(cnf->nispasswd, pwd); 64852502Sdavidn if (rc == -1) 64952502Sdavidn warnx("User '%s' already exists in NIS passwd", pwd->pw_name); 65052502Sdavidn else 65152502Sdavidn warnc(rc, "NIS passwd update"); 65252502Sdavidn /* NOTE: we treat NIS-only update errors as non-fatal */ 65352502Sdavidn } 65452512Sdavidn } else if (mode == M_UPDATE || mode == M_LOCK || mode == M_UNLOCK) { 65552527Sdavidn if (edited) { /* Only updated this if required */ 65652527Sdavidn rc = chgpwent(a_name->val, pwd); 65752527Sdavidn if (rc == -1) { 65852527Sdavidn warnx("user '%s' does not exist (NIS?)", pwd->pw_name); 65952527Sdavidn return EX_IOERR; 66052527Sdavidn } else if (rc != 0) { 66152527Sdavidn warnc(rc, "passwd file update"); 66252527Sdavidn return EX_IOERR; 66352527Sdavidn } 66452527Sdavidn if ( cnf->nispasswd && *cnf->nispasswd=='/') { 66552527Sdavidn rc = chgnispwent(cnf->nispasswd, a_name->val, pwd); 66652527Sdavidn if (rc == -1) 66752527Sdavidn warn("User '%s' not found in NIS passwd", pwd->pw_name); 66852527Sdavidn else 66952527Sdavidn warnc(rc, "NIS passwd update"); 67052527Sdavidn /* NOTE: NIS-only update errors are not fatal */ 67152527Sdavidn } 67252502Sdavidn } 67321330Sdavidn } 67421330Sdavidn 67520253Sjoerg /* 67620253Sjoerg * Ok, user is created or changed - now edit group file 67720253Sjoerg */ 67820253Sjoerg 67920253Sjoerg if (mode == M_ADD || getarg(args, 'G') != NULL) 68020253Sjoerg editgroups(pwd->pw_name, cnf->groups); 68120253Sjoerg 68220253Sjoerg /* pwd may have been invalidated */ 68344229Sdavidn if ((pwd = GETPWNAM(a_name->val)) == NULL) 68430259Scharnier errx(EX_NOUSER, "user '%s' disappeared during update", a_name->val); 68520253Sjoerg 68644229Sdavidn grp = GETGRGID(pwd->pw_gid); 68720253Sjoerg pw_log(cnf, mode, W_USER, "%s(%ld):%s(%d):%s:%s:%s", 68820253Sjoerg pwd->pw_name, (long) pwd->pw_uid, 68920253Sjoerg grp ? grp->gr_name : "unknown", (long) (grp ? grp->gr_gid : -1), 69020253Sjoerg pwd->pw_gecos, pwd->pw_dir, pwd->pw_shell); 69120253Sjoerg 69220253Sjoerg /* 69320253Sjoerg * If adding, let's touch and chown the user's mail file. This is not 69420253Sjoerg * strictly necessary under BSD with a 0755 maildir but it also 69520253Sjoerg * doesn't hurt anything to create the empty mailfile 69620253Sjoerg */ 69720253Sjoerg if (mode == M_ADD) { 69820253Sjoerg FILE *fp; 69920253Sjoerg 70044229Sdavidn if (!PWALTDIR()) { 70144229Sdavidn sprintf(line, "%s/%s", _PATH_MAILDIR, pwd->pw_name); 70244229Sdavidn close(open(line, O_RDWR | O_CREAT, 0600)); /* Preserve contents & 70344229Sdavidn * mtime */ 70444229Sdavidn chown(line, pwd->pw_uid, pwd->pw_gid); 70520253Sjoerg 70644229Sdavidn /* 70744229Sdavidn * Send mail to the new user as well, if we are asked to 70844229Sdavidn */ 70944229Sdavidn if (cnf->newmail && *cnf->newmail && (fp = fopen(cnf->newmail, "r")) != NULL) { 71044229Sdavidn FILE *pfp = popen(_PATH_SENDMAIL " -t", "w"); 71120253Sjoerg 71244229Sdavidn if (pfp == NULL) 71344229Sdavidn warn("sendmail"); 71444229Sdavidn else { 71544229Sdavidn fprintf(pfp, "From: root\n" "To: %s\n" "Subject: Welcome!\n\n", pwd->pw_name); 71644229Sdavidn while (fgets(line, sizeof(line), fp) != NULL) { 71744229Sdavidn /* Do substitutions? */ 71844229Sdavidn fputs(line, pfp); 71944229Sdavidn } 72044229Sdavidn pclose(pfp); 72144229Sdavidn pw_log(cnf, mode, W_USER, "%s(%ld) new user mail sent", 72244229Sdavidn pwd->pw_name, (long) pwd->pw_uid); 72320253Sjoerg } 72444229Sdavidn fclose(fp); 72520253Sjoerg } 72620253Sjoerg } 72720253Sjoerg } 72852527Sdavidn 72920253Sjoerg /* 73020253Sjoerg * Finally, let's create and populate the user's home directory. Note 73120253Sjoerg * that this also `works' for editing users if -m is used, but 73220253Sjoerg * existing files will *not* be overwritten. 73320253Sjoerg */ 73444229Sdavidn if (!PWALTDIR() && getarg(args, 'm') != NULL && pwd->pw_dir && *pwd->pw_dir == '/' && pwd->pw_dir[1]) { 73520253Sjoerg copymkdir(pwd->pw_dir, cnf->dotdir, 0755, pwd->pw_uid, pwd->pw_gid); 73620253Sjoerg pw_log(cnf, mode, W_USER, "%s(%ld) home %s made", 73720253Sjoerg pwd->pw_name, (long) pwd->pw_uid, pwd->pw_dir); 73820253Sjoerg } 73952527Sdavidn 74020267Sjoerg return EXIT_SUCCESS; 74120253Sjoerg} 74220253Sjoerg 74320253Sjoerg 74420253Sjoergstatic uid_t 74520253Sjoergpw_uidpolicy(struct userconf * cnf, struct cargs * args) 74620253Sjoerg{ 74720253Sjoerg struct passwd *pwd; 74820253Sjoerg uid_t uid = (uid_t) - 1; 74920253Sjoerg struct carg *a_uid = getarg(args, 'u'); 75020253Sjoerg 75120253Sjoerg /* 75220253Sjoerg * Check the given uid, if any 75320253Sjoerg */ 75420253Sjoerg if (a_uid != NULL) { 75520253Sjoerg uid = (uid_t) atol(a_uid->val); 75620253Sjoerg 75744229Sdavidn if ((pwd = GETPWUID(uid)) != NULL && getarg(args, 'o') == NULL) 75830259Scharnier errx(EX_DATAERR, "uid `%ld' has already been allocated", (long) pwd->pw_uid); 75920253Sjoerg } else { 76020253Sjoerg struct bitmap bm; 76120253Sjoerg 76220253Sjoerg /* 76320253Sjoerg * We need to allocate the next available uid under one of 76420253Sjoerg * two policies a) Grab the first unused uid b) Grab the 76520253Sjoerg * highest possible unused uid 76620253Sjoerg */ 76720253Sjoerg if (cnf->min_uid >= cnf->max_uid) { /* Sanity 76820253Sjoerg * claus^H^H^H^Hheck */ 76920253Sjoerg cnf->min_uid = 1000; 77020253Sjoerg cnf->max_uid = 32000; 77120253Sjoerg } 77220253Sjoerg bm = bm_alloc(cnf->max_uid - cnf->min_uid + 1); 77320253Sjoerg 77420253Sjoerg /* 77520253Sjoerg * Now, let's fill the bitmap from the password file 77620253Sjoerg */ 77744229Sdavidn SETPWENT(); 77844229Sdavidn while ((pwd = GETPWENT()) != NULL) 77944229Sdavidn if (pwd->pw_uid >= (uid_t) cnf->min_uid && pwd->pw_uid <= (uid_t) cnf->max_uid) 78020253Sjoerg bm_setbit(&bm, pwd->pw_uid - cnf->min_uid); 78144229Sdavidn ENDPWENT(); 78220253Sjoerg 78320253Sjoerg /* 78420253Sjoerg * Then apply the policy, with fallback to reuse if necessary 78520253Sjoerg */ 78620253Sjoerg if (cnf->reuse_uids || (uid = (uid_t) (bm_lastset(&bm) + cnf->min_uid + 1)) > cnf->max_uid) 78720253Sjoerg uid = (uid_t) (bm_firstunset(&bm) + cnf->min_uid); 78820253Sjoerg 78920253Sjoerg /* 79020253Sjoerg * Another sanity check 79120253Sjoerg */ 79220253Sjoerg if (uid < cnf->min_uid || uid > cnf->max_uid) 79330259Scharnier errx(EX_SOFTWARE, "unable to allocate a new uid - range fully used"); 79420253Sjoerg bm_dealloc(&bm); 79520253Sjoerg } 79620253Sjoerg return uid; 79720253Sjoerg} 79820253Sjoerg 79920253Sjoerg 80020253Sjoergstatic uid_t 80120253Sjoergpw_gidpolicy(struct userconf * cnf, struct cargs * args, char *nam, gid_t prefer) 80220253Sjoerg{ 80320253Sjoerg struct group *grp; 80420253Sjoerg gid_t gid = (uid_t) - 1; 80520253Sjoerg struct carg *a_gid = getarg(args, 'g'); 80620253Sjoerg 80720253Sjoerg /* 80820253Sjoerg * If no arg given, see if default can help out 80920253Sjoerg */ 81020253Sjoerg if (a_gid == NULL && cnf->default_group && *cnf->default_group) 81120253Sjoerg a_gid = addarg(args, 'g', cnf->default_group); 81220253Sjoerg 81320253Sjoerg /* 81420253Sjoerg * Check the given gid, if any 81520253Sjoerg */ 81644229Sdavidn SETGRENT(); 81720253Sjoerg if (a_gid != NULL) { 81844229Sdavidn if ((grp = GETGRNAM(a_gid->val)) == NULL) { 81920253Sjoerg gid = (gid_t) atol(a_gid->val); 82044229Sdavidn if ((gid == 0 && !isdigit(*a_gid->val)) || (grp = GETGRGID(gid)) == NULL) 82130259Scharnier errx(EX_NOUSER, "group `%s' is not defined", a_gid->val); 82220253Sjoerg } 82320253Sjoerg gid = grp->gr_gid; 82444229Sdavidn } else if ((grp = GETGRNAM(nam)) != NULL && grp->gr_mem[0] == NULL) { 82520267Sjoerg gid = grp->gr_gid; /* Already created? Use it anyway... */ 82620253Sjoerg } else { 82720253Sjoerg struct cargs grpargs; 82820253Sjoerg char tmp[32]; 82920253Sjoerg 83020253Sjoerg LIST_INIT(&grpargs); 83120253Sjoerg addarg(&grpargs, 'n', nam); 83220253Sjoerg 83320253Sjoerg /* 83420253Sjoerg * We need to auto-create a group with the user's name. We 83520253Sjoerg * can send all the appropriate output to our sister routine 83620253Sjoerg * bit first see if we can create a group with gid==uid so we 83720253Sjoerg * can keep the user and group ids in sync. We purposely do 83820253Sjoerg * NOT check the gid range if we can force the sync. If the 83920253Sjoerg * user's name dups an existing group, then the group add 84020253Sjoerg * function will happily handle that case for us and exit. 84120253Sjoerg */ 84244229Sdavidn if (GETGRGID(prefer) == NULL) { 84320253Sjoerg sprintf(tmp, "%lu", (unsigned long) prefer); 84420253Sjoerg addarg(&grpargs, 'g', tmp); 84520253Sjoerg } 84620267Sjoerg if (getarg(args, 'N')) 84720267Sjoerg { 84820267Sjoerg addarg(&grpargs, 'N', NULL); 84920267Sjoerg addarg(&grpargs, 'q', NULL); 85020267Sjoerg gid = pw_group(cnf, M_NEXT, &grpargs); 85120267Sjoerg } 85220267Sjoerg else 85320267Sjoerg { 85420267Sjoerg pw_group(cnf, M_ADD, &grpargs); 85544229Sdavidn if ((grp = GETGRNAM(nam)) != NULL) 85620267Sjoerg gid = grp->gr_gid; 85720267Sjoerg } 85820253Sjoerg a_gid = grpargs.lh_first; 85920253Sjoerg while (a_gid != NULL) { 86020253Sjoerg struct carg *t = a_gid->list.le_next; 86120253Sjoerg LIST_REMOVE(a_gid, list); 86220253Sjoerg a_gid = t; 86320253Sjoerg } 86420253Sjoerg } 86544229Sdavidn ENDGRENT(); 86620253Sjoerg return gid; 86720253Sjoerg} 86820253Sjoerg 86920253Sjoerg 87020253Sjoergstatic time_t 87120253Sjoergpw_pwdpolicy(struct userconf * cnf, struct cargs * args) 87220253Sjoerg{ 87320253Sjoerg time_t result = 0; 87420253Sjoerg time_t now = time(NULL); 87527831Sdavidn struct carg *arg = getarg(args, 'p'); 87620253Sjoerg 87720253Sjoerg if (arg != NULL) { 87820253Sjoerg if ((result = parse_date(now, arg->val)) == now) 87930259Scharnier errx(EX_DATAERR, "invalid date/time `%s'", arg->val); 88020253Sjoerg } else if (cnf->password_days > 0) 88120253Sjoerg result = now + ((long) cnf->password_days * 86400L); 88220253Sjoerg return result; 88320253Sjoerg} 88420253Sjoerg 88520253Sjoerg 88620253Sjoergstatic time_t 88720253Sjoergpw_exppolicy(struct userconf * cnf, struct cargs * args) 88820253Sjoerg{ 88920253Sjoerg time_t result = 0; 89020253Sjoerg time_t now = time(NULL); 89120253Sjoerg struct carg *arg = getarg(args, 'e'); 89220253Sjoerg 89320253Sjoerg if (arg != NULL) { 89420253Sjoerg if ((result = parse_date(now, arg->val)) == now) 89530259Scharnier errx(EX_DATAERR, "invalid date/time `%s'", arg->val); 89620253Sjoerg } else if (cnf->expire_days > 0) 89720253Sjoerg result = now + ((long) cnf->expire_days * 86400L); 89820253Sjoerg return result; 89920253Sjoerg} 90020253Sjoerg 90120253Sjoerg 90220253Sjoergstatic char * 90320253Sjoergpw_homepolicy(struct userconf * cnf, struct cargs * args, char const * user) 90420253Sjoerg{ 90520253Sjoerg struct carg *arg = getarg(args, 'd'); 90620253Sjoerg 90720253Sjoerg if (arg) 90820253Sjoerg return arg->val; 90920253Sjoerg else { 91020253Sjoerg static char home[128]; 91120253Sjoerg 91220253Sjoerg if (cnf->home == NULL || *cnf->home == '\0') 91330259Scharnier errx(EX_CONFIG, "no base home directory set"); 91420253Sjoerg sprintf(home, "%s/%s", cnf->home, user); 91520253Sjoerg return home; 91620253Sjoerg } 91720253Sjoerg} 91820253Sjoerg 91920253Sjoergstatic char * 92020253Sjoergshell_path(char const * path, char *shells[], char *sh) 92120253Sjoerg{ 92220253Sjoerg if (sh != NULL && (*sh == '/' || *sh == '\0')) 92320253Sjoerg return sh; /* specified full path or forced none */ 92420253Sjoerg else { 92520253Sjoerg char *p; 92620253Sjoerg char paths[_UC_MAXLINE]; 92720253Sjoerg 92820253Sjoerg /* 92920253Sjoerg * We need to search paths 93020253Sjoerg */ 93120253Sjoerg strncpy(paths, path, sizeof paths); 93220253Sjoerg paths[sizeof paths - 1] = '\0'; 93320253Sjoerg for (p = strtok(paths, ": \t\r\n"); p != NULL; p = strtok(NULL, ": \t\r\n")) { 93420253Sjoerg int i; 93520253Sjoerg static char shellpath[256]; 93620253Sjoerg 93720253Sjoerg if (sh != NULL) { 93820253Sjoerg sprintf(shellpath, "%s/%s", p, sh); 93920253Sjoerg if (access(shellpath, X_OK) == 0) 94020253Sjoerg return shellpath; 94120253Sjoerg } else 94220253Sjoerg for (i = 0; i < _UC_MAXSHELLS && shells[i] != NULL; i++) { 94320253Sjoerg sprintf(shellpath, "%s/%s", p, shells[i]); 94420253Sjoerg if (access(shellpath, X_OK) == 0) 94520253Sjoerg return shellpath; 94620253Sjoerg } 94720253Sjoerg } 94820253Sjoerg if (sh == NULL) 94930259Scharnier errx(EX_OSFILE, "can't find shell `%s' in shell paths", sh); 95030259Scharnier errx(EX_CONFIG, "no default shell available or defined"); 95120253Sjoerg return NULL; 95220253Sjoerg } 95320253Sjoerg} 95420253Sjoerg 95520253Sjoerg 95620253Sjoergstatic char * 95720253Sjoergpw_shellpolicy(struct userconf * cnf, struct cargs * args, char *newshell) 95820253Sjoerg{ 95920253Sjoerg char *sh = newshell; 96020253Sjoerg struct carg *arg = getarg(args, 's'); 96120253Sjoerg 96220253Sjoerg if (newshell == NULL && arg != NULL) 96320253Sjoerg sh = arg->val; 96420253Sjoerg return shell_path(cnf->shelldir, cnf->shells, sh ? sh : cnf->shell_default); 96520253Sjoerg} 96620253Sjoerg 96720253Sjoergstatic char const chars[] = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ."; 96820253Sjoerg 96920253Sjoergchar * 97020253Sjoergpw_pwcrypt(char *password) 97120253Sjoerg{ 97220253Sjoerg int i; 97320253Sjoerg char salt[12]; 97420253Sjoerg 97520253Sjoerg static char buf[256]; 97620253Sjoerg 97720253Sjoerg /* 97820253Sjoerg * Calculate a salt value 97920253Sjoerg */ 98024214Sache if (!randinit) { 98124214Sache randinit = 1; 98224214Sache#ifdef __FreeBSD__ 98326626Sache srandomdev(); 98426626Sache#else 98526626Sache srandom((unsigned long) (time(NULL) ^ getpid())); 98624214Sache#endif 98724214Sache } 98820253Sjoerg for (i = 0; i < 8; i++) 98920253Sjoerg salt[i] = chars[random() % 63]; 99020253Sjoerg salt[i] = '\0'; 99120253Sjoerg 99220253Sjoerg return strcpy(buf, crypt(password, salt)); 99320253Sjoerg} 99420253Sjoerg 99520590Sdavidn#if defined(USE_MD5RAND) 99620555Sdavidnu_char * 99720590Sdavidnpw_getrand(u_char *buf, int len) /* cryptographically secure rng */ 99820555Sdavidn{ 99920590Sdavidn int i; 100020590Sdavidn for (i=0;i<len;i+=16) { 100120590Sdavidn u_char ubuf[16]; 100220590Sdavidn 100320590Sdavidn MD5_CTX md5_ctx; 100420590Sdavidn struct timeval tv, tvo; 100520590Sdavidn struct rusage ru; 100620590Sdavidn int n=0; 100720590Sdavidn int t; 100820590Sdavidn 100920590Sdavidn MD5Init (&md5_ctx); 101020590Sdavidn t=getpid(); 101120590Sdavidn MD5Update (&md5_ctx, (u_char*)&t, sizeof t); 101220590Sdavidn t=getppid(); 101320590Sdavidn MD5Update (&md5_ctx, (u_char*)&t, sizeof t); 101420590Sdavidn gettimeofday (&tvo, NULL); 101520590Sdavidn do { 101620590Sdavidn getrusage (RUSAGE_SELF, &ru); 101720590Sdavidn MD5Update (&md5_ctx, (u_char*)&ru, sizeof ru); 101820590Sdavidn gettimeofday (&tv, NULL); 101920590Sdavidn MD5Update (&md5_ctx, (u_char*)&tv, sizeof tv); 102020590Sdavidn } while (n++<20 || tv.tv_usec-tvo.tv_usec<100*1000); 102120590Sdavidn MD5Final (ubuf, &md5_ctx); 102220590Sdavidn memcpy(buf+i, ubuf, MIN(16, len-n)); 102320590Sdavidn } 102420590Sdavidn return buf; 102520555Sdavidn} 102620253Sjoerg 102720590Sdavidn#else /* Portable version */ 102820590Sdavidn 102920590Sdavidnstatic u_char * 103020590Sdavidnpw_getrand(u_char *buf, int len) 103120590Sdavidn{ 103220590Sdavidn int i; 103320590Sdavidn 103420590Sdavidn for (i = 0; i < len; i++) { 103524214Sache unsigned long val = random(); 103620590Sdavidn /* Use all bits in the random value */ 103720590Sdavidn buf[i]=(u_char)((val >> 24) ^ (val >> 16) ^ (val >> 8) ^ val); 103820590Sdavidn } 103920590Sdavidn return buf; 104020590Sdavidn} 104120590Sdavidn 104220590Sdavidn#endif 104320590Sdavidn 104420253Sjoergstatic char * 104520253Sjoergpw_password(struct userconf * cnf, struct cargs * args, char const * user) 104620253Sjoerg{ 104720253Sjoerg int i, l; 104820253Sjoerg char pwbuf[32]; 104920555Sdavidn u_char rndbuf[sizeof pwbuf]; 105020253Sjoerg 105120253Sjoerg switch (cnf->default_password) { 105220253Sjoerg case -1: /* Random password */ 105324214Sache if (!randinit) { 105424214Sache randinit = 1; 105524214Sache#ifdef __FreeBSD__ 105626626Sache srandomdev(); 105726626Sache#else 105826626Sache srandom((unsigned long) (time(NULL) ^ getpid())); 105924214Sache#endif 106024214Sache } 106120253Sjoerg l = (random() % 8 + 8); /* 8 - 16 chars */ 106220555Sdavidn pw_getrand(rndbuf, l); 106320253Sjoerg for (i = 0; i < l; i++) 106442245Sbillf pwbuf[i] = chars[rndbuf[i] % (sizeof(chars)-1)]; 106520253Sjoerg pwbuf[i] = '\0'; 106620253Sjoerg 106720253Sjoerg /* 106820253Sjoerg * We give this information back to the user 106920253Sjoerg */ 107020267Sjoerg if (getarg(args, 'h') == NULL && getarg(args, 'N') == NULL) { 107120712Sdavidn if (isatty(1)) 107220712Sdavidn printf("Password for '%s' is: ", user); 107320253Sjoerg printf("%s\n", pwbuf); 107420253Sjoerg fflush(stdout); 107520253Sjoerg } 107620253Sjoerg break; 107720253Sjoerg 107820253Sjoerg case -2: /* No password at all! */ 107920253Sjoerg return ""; 108020253Sjoerg 108120253Sjoerg case 0: /* No login - default */ 108220253Sjoerg default: 108320253Sjoerg return "*"; 108420253Sjoerg 108520253Sjoerg case 1: /* user's name */ 108620253Sjoerg strncpy(pwbuf, user, sizeof pwbuf); 108720253Sjoerg pwbuf[sizeof pwbuf - 1] = '\0'; 108820253Sjoerg break; 108920253Sjoerg } 109020253Sjoerg return pw_pwcrypt(pwbuf); 109120253Sjoerg} 109220253Sjoerg 109320253Sjoerg 109420253Sjoergstatic int 109544386Sdavidnprint_user(struct passwd * pwd, int pretty, int v7) 109620253Sjoerg{ 109720253Sjoerg if (!pretty) { 109820253Sjoerg char buf[_UC_MAXLINE]; 109920253Sjoerg 110044386Sdavidn fmtpwentry(buf, pwd, v7 ? PWF_PASSWD : PWF_STANDARD); 110120253Sjoerg fputs(buf, stdout); 110220253Sjoerg } else { 110320267Sjoerg int j; 110420253Sjoerg char *p; 110544229Sdavidn struct group *grp = GETGRGID(pwd->pw_gid); 110620253Sjoerg char uname[60] = "User &", office[60] = "[None]", 110720253Sjoerg wphone[60] = "[None]", hphone[60] = "[None]"; 110820590Sdavidn char acexpire[32] = "[None]", pwexpire[32] = "[None]"; 110920590Sdavidn struct tm * tptr; 111020253Sjoerg 111120253Sjoerg if ((p = strtok(pwd->pw_gecos, ",")) != NULL) { 111220253Sjoerg strncpy(uname, p, sizeof uname); 111320253Sjoerg uname[sizeof uname - 1] = '\0'; 111420253Sjoerg if ((p = strtok(NULL, ",")) != NULL) { 111520253Sjoerg strncpy(office, p, sizeof office); 111620253Sjoerg office[sizeof office - 1] = '\0'; 111720253Sjoerg if ((p = strtok(NULL, ",")) != NULL) { 111820253Sjoerg strncpy(wphone, p, sizeof wphone); 111920253Sjoerg wphone[sizeof wphone - 1] = '\0'; 112020253Sjoerg if ((p = strtok(NULL, "")) != NULL) { 112120253Sjoerg strncpy(hphone, p, sizeof hphone); 112220253Sjoerg hphone[sizeof hphone - 1] = '\0'; 112320253Sjoerg } 112420253Sjoerg } 112520253Sjoerg } 112620253Sjoerg } 112720253Sjoerg /* 112820253Sjoerg * Handle '&' in gecos field 112920253Sjoerg */ 113020253Sjoerg if ((p = strchr(uname, '&')) != NULL) { 113120253Sjoerg int l = strlen(pwd->pw_name); 113220253Sjoerg int m = strlen(p); 113320253Sjoerg 113420253Sjoerg memmove(p + l, p + 1, m); 113520253Sjoerg memmove(p, pwd->pw_name, l); 113620253Sjoerg *p = (char) toupper(*p); 113720253Sjoerg } 113820590Sdavidn if (pwd->pw_expire > (time_t)0 && (tptr = localtime(&pwd->pw_expire)) != NULL) 113920590Sdavidn strftime(acexpire, sizeof acexpire, "%c", tptr); 114020590Sdavidn if (pwd->pw_change > (time_t)9 && (tptr = localtime(&pwd->pw_change)) != NULL) 114120590Sdavidn strftime(pwexpire, sizeof pwexpire, "%c", tptr); 114222394Sdavidn printf("Login Name: %-15s #%-12ld Group: %-15s #%ld\n" 114320747Sdavidn " Full Name: %s\n" 114420747Sdavidn " Home: %-26.26s Class: %s\n" 114520747Sdavidn " Shell: %-26.26s Office: %s\n" 114620747Sdavidn "Work Phone: %-26.26s Home Phone: %s\n" 114720747Sdavidn "Acc Expire: %-26.26s Pwd Expire: %s\n", 114820253Sjoerg pwd->pw_name, (long) pwd->pw_uid, 114920253Sjoerg grp ? grp->gr_name : "(invalid)", (long) pwd->pw_gid, 115020253Sjoerg uname, pwd->pw_dir, pwd->pw_class, 115120590Sdavidn pwd->pw_shell, office, wphone, hphone, 115220590Sdavidn acexpire, pwexpire); 115344229Sdavidn SETGRENT(); 115420267Sjoerg j = 0; 115544229Sdavidn while ((grp=GETGRENT()) != NULL) 115620267Sjoerg { 115720267Sjoerg int i = 0; 115820747Sdavidn while (grp->gr_mem[i] != NULL) 115920267Sjoerg { 116020267Sjoerg if (strcmp(grp->gr_mem[i], pwd->pw_name)==0) 116120267Sjoerg { 116220747Sdavidn printf(j++ == 0 ? " Groups: %s" : ",%s", grp->gr_name); 116320267Sjoerg break; 116420267Sjoerg } 116520267Sjoerg ++i; 116620267Sjoerg } 116720267Sjoerg } 116844229Sdavidn ENDGRENT(); 116920267Sjoerg printf("%s\n", j ? "\n" : ""); 117020253Sjoerg } 117120267Sjoerg return EXIT_SUCCESS; 117220253Sjoerg} 117320253Sjoerg 117420679Sdavidnchar * 117520679Sdavidnpw_checkname(u_char *name, int gecos) 117620253Sjoerg{ 117720253Sjoerg int l = 0; 117821052Sdavidn char const *notch = gecos ? ":!@" : " ,\t:+&#%$^()!@~*?<>=|\\/\""; 117920253Sjoerg 118020253Sjoerg while (name[l]) { 118121052Sdavidn if (strchr(notch, name[l]) != NULL || name[l] < ' ' || name[l] == 127 || 118221052Sdavidn (!gecos && l==0 && name[l] == '-') || /* leading '-' */ 118321052Sdavidn (!gecos && name[l] & 0x80)) /* 8-bit */ 118430259Scharnier errx(EX_DATAERR, (name[l] >= ' ' && name[l] < 127) 118530259Scharnier ? "invalid character `%c' in field" 118630259Scharnier : "invalid character 0x%02x in field", 118720325Sjoerg name[l]); 118820253Sjoerg ++l; 118920253Sjoerg } 119022394Sdavidn if (!gecos && l > LOGNAMESIZE) 119130259Scharnier errx(EX_DATAERR, "name too long `%s'", name); 119220679Sdavidn return (char *)name; 119320253Sjoerg} 119420253Sjoerg 119520253Sjoerg 119620253Sjoergstatic void 119720253Sjoergrmat(uid_t uid) 119820253Sjoerg{ 119920253Sjoerg DIR *d = opendir("/var/at/jobs"); 120020253Sjoerg 120120253Sjoerg if (d != NULL) { 120220253Sjoerg struct dirent *e; 120320253Sjoerg 120420253Sjoerg while ((e = readdir(d)) != NULL) { 120520253Sjoerg struct stat st; 120620253Sjoerg 120720253Sjoerg if (strncmp(e->d_name, ".lock", 5) != 0 && 120820253Sjoerg stat(e->d_name, &st) == 0 && 120920253Sjoerg !S_ISDIR(st.st_mode) && 121020253Sjoerg st.st_uid == uid) { 121120253Sjoerg char tmp[MAXPATHLEN]; 121220253Sjoerg 121320253Sjoerg sprintf(tmp, "/usr/bin/atrm %s", e->d_name); 121420253Sjoerg system(tmp); 121520253Sjoerg } 121620253Sjoerg } 121720253Sjoerg closedir(d); 121820253Sjoerg } 121920253Sjoerg} 122020747Sdavidn 122120747Sdavidnstatic void 122220747Sdavidnrmskey(char const * name) 122320747Sdavidn{ 122420747Sdavidn static const char etcskey[] = "/etc/skeykeys"; 122521052Sdavidn FILE *fp = fopen(etcskey, "r+"); 122620747Sdavidn 122721052Sdavidn if (fp != NULL) { 122821052Sdavidn char tmp[1024]; 122921052Sdavidn off_t atofs = 0; 123021052Sdavidn int length = strlen(name); 123120747Sdavidn 123221052Sdavidn while (fgets(tmp, sizeof tmp, fp) != NULL) { 123321052Sdavidn if (strncmp(name, tmp, length) == 0 && tmp[length]==' ') { 123421052Sdavidn if (fseek(fp, atofs, SEEK_SET) == 0) { 123521052Sdavidn fwrite("#", 1, 1, fp); /* Comment username out */ 123621052Sdavidn } 123721052Sdavidn break; 123820747Sdavidn } 123921052Sdavidn atofs = ftell(fp); 124020747Sdavidn } 124121052Sdavidn /* 124221052Sdavidn * If we got an error of any sort, don't update! 124321052Sdavidn */ 124421052Sdavidn fclose(fp); 124520747Sdavidn } 124620747Sdavidn} 124720747Sdavidn 1248