pw_user.c revision 44229
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[] = 3044229Sdavidn "$Id: pw_user.c,v 1.26 1999/02/08 21:26:44 des Exp $"; 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 5724214Sachestatic randinit; 5824214Sache 5920253Sjoergstatic int print_user(struct passwd * pwd, int pretty); 6020253Sjoergstatic uid_t pw_uidpolicy(struct userconf * cnf, struct cargs * args); 6120253Sjoergstatic uid_t pw_gidpolicy(struct userconf * cnf, struct cargs * args, char *nam, gid_t prefer); 6220253Sjoergstatic time_t pw_pwdpolicy(struct userconf * cnf, struct cargs * args); 6320253Sjoergstatic time_t pw_exppolicy(struct userconf * cnf, struct cargs * args); 6420253Sjoergstatic char *pw_homepolicy(struct userconf * cnf, struct cargs * args, char const * user); 6520253Sjoergstatic char *pw_shellpolicy(struct userconf * cnf, struct cargs * args, char *newshell); 6620253Sjoergstatic char *pw_password(struct userconf * cnf, struct cargs * args, char const * user); 6720253Sjoergstatic char *shell_path(char const * path, char *shells[], char *sh); 6820253Sjoergstatic void rmat(uid_t uid); 6920747Sdavidnstatic void rmskey(char const * name); 7020253Sjoerg 7120253Sjoerg/*- 7220253Sjoerg * -C config configuration file 7320253Sjoerg * -q quiet operation 7420253Sjoerg * -n name login name 7520253Sjoerg * -u uid user id 7620253Sjoerg * -c comment user name/comment 7720253Sjoerg * -d directory home directory 7820253Sjoerg * -e date account expiry date 7920253Sjoerg * -p date password expiry date 8020253Sjoerg * -g grp primary group 8120253Sjoerg * -G grp1,grp2 additional groups 8220253Sjoerg * -m [ -k dir ] create and set up home 8320253Sjoerg * -s shell name of login shell 8420253Sjoerg * -o duplicate uid ok 8520253Sjoerg * -L class user class 8620253Sjoerg * -l name new login name 8720253Sjoerg * -h fd password filehandle 8820253Sjoerg * -F force print or add 8920253Sjoerg * Setting defaults: 9020253Sjoerg * -D set user defaults 9120253Sjoerg * -b dir default home root dir 9220253Sjoerg * -e period default expiry period 9320253Sjoerg * -p period default password change period 9420253Sjoerg * -g group default group 9520253Sjoerg * -G grp1,grp2.. default additional groups 9620253Sjoerg * -L class default login class 9720253Sjoerg * -k dir default home skeleton 9820253Sjoerg * -s shell default shell 9920253Sjoerg * -w method default password method 10020253Sjoerg */ 10120253Sjoerg 10220253Sjoergint 10320253Sjoergpw_user(struct userconf * cnf, int mode, struct cargs * args) 10420253Sjoerg{ 10521330Sdavidn int r, r1; 10620253Sjoerg char *p = NULL; 10720253Sjoerg struct carg *a_name; 10820253Sjoerg struct carg *a_uid; 10920253Sjoerg struct carg *arg; 11020253Sjoerg struct passwd *pwd = NULL; 11120253Sjoerg struct group *grp; 11220253Sjoerg struct stat st; 11320747Sdavidn char line[_PASSWORD_LEN+1]; 11420253Sjoerg 11520253Sjoerg static struct passwd fakeuser = 11620253Sjoerg { 11720253Sjoerg NULL, 11820253Sjoerg "*", 11920253Sjoerg -1, 12020253Sjoerg -1, 12120253Sjoerg 0, 12220253Sjoerg "", 12320253Sjoerg "User &", 12420253Sjoerg "/bin/sh", 12520253Sjoerg 0, 12620253Sjoerg 0 12720253Sjoerg }; 12820253Sjoerg 12920253Sjoerg /* 13020267Sjoerg * With M_NEXT, we only need to return the 13120267Sjoerg * next uid to stdout 13220267Sjoerg */ 13320267Sjoerg if (mode == M_NEXT) 13420267Sjoerg { 13520267Sjoerg uid_t next = pw_uidpolicy(cnf, args); 13620267Sjoerg if (getarg(args, 'q')) 13720267Sjoerg return next; 13820267Sjoerg printf("%ld:", (long)next); 13920267Sjoerg pw_group(cnf, mode, args); 14020267Sjoerg return EXIT_SUCCESS; 14120267Sjoerg } 14220267Sjoerg 14320267Sjoerg /* 14420253Sjoerg * We can do all of the common legwork here 14520253Sjoerg */ 14620253Sjoerg 14720253Sjoerg if ((arg = getarg(args, 'b')) != NULL) { 14820267Sjoerg cnf->home = arg->val; 14920253Sjoerg } 15021052Sdavidn 15121052Sdavidn /* 15221052Sdavidn * If we'll need to use it or we're updating it, 15321052Sdavidn * then create the base home directory if necessary 15421052Sdavidn */ 15521052Sdavidn if (arg != NULL || getarg(args, 'm') != NULL) { 15621052Sdavidn int l = strlen(cnf->home); 15721052Sdavidn 15821052Sdavidn if (l > 1 && cnf->home[l-1] == '/') /* Shave off any trailing path delimiter */ 15921052Sdavidn cnf->home[--l] = '\0'; 16021052Sdavidn 16121052Sdavidn if (l < 2 || *cnf->home != '/') /* Check for absolute path name */ 16230259Scharnier errx(EX_DATAERR, "invalid base directory for home '%s'", cnf->home); 16321052Sdavidn 16421052Sdavidn if (stat(cnf->home, &st) == -1) { 16521052Sdavidn char dbuf[MAXPATHLEN]; 16621052Sdavidn 16721242Sdavidn /* 16821242Sdavidn * This is a kludge especially for Joerg :) 16921242Sdavidn * If the home directory would be created in the root partition, then 17021242Sdavidn * we really create it under /usr which is likely to have more space. 17121242Sdavidn * But we create a symlink from cnf->home -> "/usr" -> cnf->home 17221242Sdavidn */ 17321242Sdavidn if (strchr(cnf->home+1, '/') == NULL) { 17421242Sdavidn strcpy(dbuf, "/usr"); 17521242Sdavidn strncat(dbuf, cnf->home, MAXPATHLEN-5); 17621242Sdavidn if (mkdir(dbuf, 0755) != -1 || errno == EEXIST) { 17721242Sdavidn chown(dbuf, 0, 0); 17821242Sdavidn symlink(dbuf, cnf->home); 17921242Sdavidn } 18021242Sdavidn /* If this falls, fall back to old method */ 18121242Sdavidn } 18221052Sdavidn p = strncpy(dbuf, cnf->home, sizeof dbuf); 18321052Sdavidn dbuf[MAXPATHLEN-1] = '\0'; 18421242Sdavidn if (stat(dbuf, &st) == -1) { 18521242Sdavidn while ((p = strchr(++p, '/')) != NULL) { 18621242Sdavidn *p = '\0'; 18721242Sdavidn if (stat(dbuf, &st) == -1) { 18821242Sdavidn if (mkdir(dbuf, 0755) == -1) 18921242Sdavidn goto direrr; 19021242Sdavidn chown(dbuf, 0, 0); 19121242Sdavidn } else if (!S_ISDIR(st.st_mode)) 19230259Scharnier errx(EX_OSFILE, "'%s' (root home parent) is not a directory", dbuf); 19321242Sdavidn *p = '/'; 19421242Sdavidn } 19521052Sdavidn } 19621242Sdavidn if (stat(dbuf, &st) == -1) { 19721052Sdavidn if (mkdir(dbuf, 0755) == -1) { 19830259Scharnier direrr: err(EX_OSFILE, "mkdir '%s'", dbuf); 19921052Sdavidn } 20021052Sdavidn chown(dbuf, 0, 0); 20121052Sdavidn } 20221052Sdavidn } else if (!S_ISDIR(st.st_mode)) 20330259Scharnier errx(EX_OSFILE, "root home `%s' is not a directory", cnf->home); 20421052Sdavidn } 20521052Sdavidn 20621052Sdavidn 20720253Sjoerg if ((arg = getarg(args, 'e')) != NULL) 20820253Sjoerg cnf->expire_days = atoi(arg->val); 20920253Sjoerg 21021330Sdavidn if ((arg = getarg(args, 'y')) != NULL) 21121330Sdavidn cnf->nispasswd = arg->val; 21221330Sdavidn 21320253Sjoerg if ((arg = getarg(args, 'p')) != NULL && arg->val) 21420253Sjoerg cnf->password_days = atoi(arg->val); 21520253Sjoerg 21620253Sjoerg if ((arg = getarg(args, 'g')) != NULL) { 21720253Sjoerg p = arg->val; 21844229Sdavidn if ((grp = GETGRNAM(p)) == NULL) { 21944229Sdavidn if (!isdigit(*p) || (grp = GETGRGID((gid_t) atoi(p))) == NULL) 22030259Scharnier errx(EX_NOUSER, "group `%s' does not exist", p); 22120253Sjoerg } 22220253Sjoerg cnf->default_group = newstr(grp->gr_name); 22320253Sjoerg } 22420253Sjoerg if ((arg = getarg(args, 'L')) != NULL) 22520679Sdavidn cnf->default_class = pw_checkname((u_char *)arg->val, 0); 22620253Sjoerg 22720253Sjoerg if ((arg = getarg(args, 'G')) != NULL && arg->val) { 22820253Sjoerg int i = 0; 22920253Sjoerg 23020747Sdavidn for (p = strtok(arg->val, ", \t"); p != NULL; p = strtok(NULL, ", \t")) { 23144229Sdavidn if ((grp = GETGRNAM(p)) == NULL) { 23244229Sdavidn if (!isdigit(*p) || (grp = GETGRGID((gid_t) atoi(p))) == NULL) 23330259Scharnier errx(EX_NOUSER, "group `%s' does not exist", p); 23420253Sjoerg } 23520747Sdavidn if (extendarray(&cnf->groups, &cnf->numgroups, i + 2) != -1) 23620747Sdavidn cnf->groups[i++] = newstr(grp->gr_name); 23720253Sjoerg } 23820747Sdavidn while (i < cnf->numgroups) 23920253Sjoerg cnf->groups[i++] = NULL; 24020253Sjoerg } 24120253Sjoerg if ((arg = getarg(args, 'k')) != NULL) { 24226088Sdavidn if (stat(cnf->dotdir = arg->val, &st) == -1 || !S_ISDIR(st.st_mode)) 24330259Scharnier errx(EX_OSFILE, "skeleton `%s' is not a directory or does not exist", cnf->dotdir); 24420253Sjoerg } 24520253Sjoerg if ((arg = getarg(args, 's')) != NULL) 24620253Sjoerg cnf->shell_default = arg->val; 24720253Sjoerg 24820253Sjoerg if (mode == M_ADD && getarg(args, 'D')) { 24920253Sjoerg if (getarg(args, 'n') != NULL) 25030259Scharnier errx(EX_DATAERR, "can't combine `-D' with `-n name'"); 25120253Sjoerg if ((arg = getarg(args, 'u')) != NULL && (p = strtok(arg->val, ", \t")) != NULL) { 25220253Sjoerg if ((cnf->min_uid = (uid_t) atoi(p)) == 0) 25320253Sjoerg cnf->min_uid = 1000; 25420253Sjoerg if ((p = strtok(NULL, " ,\t")) == NULL || (cnf->max_uid = (uid_t) atoi(p)) < cnf->min_uid) 25520253Sjoerg cnf->max_uid = 32000; 25620253Sjoerg } 25720253Sjoerg if ((arg = getarg(args, 'i')) != NULL && (p = strtok(arg->val, ", \t")) != NULL) { 25820253Sjoerg if ((cnf->min_gid = (gid_t) atoi(p)) == 0) 25920253Sjoerg cnf->min_gid = 1000; 26020253Sjoerg if ((p = strtok(NULL, " ,\t")) == NULL || (cnf->max_gid = (gid_t) atoi(p)) < cnf->min_gid) 26120253Sjoerg cnf->max_gid = 32000; 26220253Sjoerg } 26320253Sjoerg if ((arg = getarg(args, 'w')) != NULL) 26420253Sjoerg cnf->default_password = boolean_val(arg->val, cnf->default_password); 26520253Sjoerg 26620253Sjoerg arg = getarg(args, 'C'); 26720253Sjoerg if (write_userconfig(arg ? arg->val : NULL)) 26820267Sjoerg return EXIT_SUCCESS; 26930259Scharnier warn("config update"); 27020267Sjoerg return EX_IOERR; 27120253Sjoerg } 27220253Sjoerg if (mode == M_PRINT && getarg(args, 'a')) { 27320267Sjoerg int pretty = getarg(args, 'P') != NULL; 27420253Sjoerg 27544229Sdavidn SETPWENT(); 27644229Sdavidn while ((pwd = GETPWENT()) != NULL) 27720253Sjoerg print_user(pwd, pretty); 27844229Sdavidn ENDPWENT(); 27920267Sjoerg return EXIT_SUCCESS; 28020253Sjoerg } 28120253Sjoerg if ((a_name = getarg(args, 'n')) != NULL) 28244229Sdavidn pwd = GETPWNAM(pw_checkname((u_char *)a_name->val, 0)); 28320253Sjoerg a_uid = getarg(args, 'u'); 28420253Sjoerg 28520253Sjoerg if (a_uid == NULL) { 28620253Sjoerg if (a_name == NULL) 28730259Scharnier errx(EX_DATAERR, "user name or id required"); 28820253Sjoerg 28920253Sjoerg /* 29020253Sjoerg * Determine whether 'n' switch is name or uid - we don't 29120253Sjoerg * really don't really care which we have, but we need to 29220253Sjoerg * know. 29320253Sjoerg */ 29443780Sdes if (mode != M_ADD && pwd == NULL 29543780Sdes && strspn(a_name->val, "0123456789") == strlen(a_name->val) 29643780Sdes && atoi(a_name->val) > 0) { /* Assume uid */ 29720253Sjoerg (a_uid = a_name)->ch = 'u'; 29820253Sjoerg a_name = NULL; 29920253Sjoerg } 30020253Sjoerg } 30120253Sjoerg /* 30220253Sjoerg * Update, delete & print require that the user exists 30320253Sjoerg */ 30420253Sjoerg if (mode == M_UPDATE || mode == M_DELETE || mode == M_PRINT) { 30520253Sjoerg if (a_name == NULL && pwd == NULL) /* Try harder */ 30644229Sdavidn pwd = GETPWUID(atoi(a_uid->val)); 30720253Sjoerg 30820253Sjoerg if (pwd == NULL) { 30920253Sjoerg if (mode == M_PRINT && getarg(args, 'F')) { 31020253Sjoerg fakeuser.pw_name = a_name ? a_name->val : "nouser"; 31120253Sjoerg fakeuser.pw_uid = a_uid ? (uid_t) atol(a_uid->val) : -1; 31220267Sjoerg return print_user(&fakeuser, getarg(args, 'P') != NULL); 31320253Sjoerg } 31420253Sjoerg if (a_name == NULL) 31530259Scharnier errx(EX_NOUSER, "no such uid `%s'", a_uid->val); 31630259Scharnier errx(EX_NOUSER, "no such user `%s'", a_name->val); 31720253Sjoerg } 31820253Sjoerg if (a_name == NULL) /* May be needed later */ 31920253Sjoerg a_name = addarg(args, 'n', newstr(pwd->pw_name)); 32020253Sjoerg 32120253Sjoerg /* 32220253Sjoerg * Handle deletions now 32320253Sjoerg */ 32420253Sjoerg if (mode == M_DELETE) { 32520253Sjoerg char file[MAXPATHLEN]; 32620253Sjoerg char home[MAXPATHLEN]; 32720253Sjoerg uid_t uid = pwd->pw_uid; 32820253Sjoerg 32920253Sjoerg if (strcmp(pwd->pw_name, "root") == 0) 33030259Scharnier errx(EX_DATAERR, "cannot remove user 'root'"); 33120253Sjoerg 33244229Sdavidn if (!PWALTDIR()) { 33344229Sdavidn /* 33444229Sdavidn * Remove skey record from /etc/skeykeys 33544229Sdavidn */ 33620747Sdavidn 33744229Sdavidn rmskey(pwd->pw_name); 33820747Sdavidn 33944229Sdavidn /* 34044229Sdavidn * Remove crontabs 34144229Sdavidn */ 34244229Sdavidn sprintf(file, "/var/cron/tabs/%s", pwd->pw_name); 34344229Sdavidn if (access(file, F_OK) == 0) { 34444229Sdavidn sprintf(file, "crontab -u %s -r", pwd->pw_name); 34544229Sdavidn system(file); 34644229Sdavidn } 34720253Sjoerg } 34820253Sjoerg /* 34920253Sjoerg * Save these for later, since contents of pwd may be 35020253Sjoerg * invalidated by deletion 35120253Sjoerg */ 35220253Sjoerg sprintf(file, "%s/%s", _PATH_MAILDIR, pwd->pw_name); 35320253Sjoerg strncpy(home, pwd->pw_dir, sizeof home); 35420253Sjoerg home[sizeof home - 1] = '\0'; 35520253Sjoerg 35620253Sjoerg if (!delpwent(pwd)) 35730259Scharnier err(EX_IOERR, "error updating passwd file"); 35821330Sdavidn 35921330Sdavidn if (cnf->nispasswd && *cnf->nispasswd=='/' && !delnispwent(cnf->nispasswd, a_name->val)) 36030259Scharnier warn("WARNING: NIS passwd update"); 36121330Sdavidn 36220253Sjoerg editgroups(a_name->val, NULL); 36320253Sjoerg 36420253Sjoerg pw_log(cnf, mode, W_USER, "%s(%ld) account removed", a_name->val, (long) uid); 36520253Sjoerg 36644229Sdavidn if (!PWALTDIR()) { 36744229Sdavidn /* 36844229Sdavidn * Remove mail file 36944229Sdavidn */ 37044229Sdavidn remove(file); 37120253Sjoerg 37244229Sdavidn /* 37344229Sdavidn * Remove at jobs 37444229Sdavidn */ 37544229Sdavidn if (getpwuid(uid) == NULL) 37644229Sdavidn rmat(uid); 37720253Sjoerg 37844229Sdavidn /* 37944229Sdavidn * Remove home directory and contents 38044229Sdavidn */ 38144229Sdavidn if (getarg(args, 'r') != NULL && *home == '/' && getpwuid(uid) == NULL) { 38244229Sdavidn if (stat(home, &st) != -1) { 38344229Sdavidn rm_r(home, uid); 38444229Sdavidn pw_log(cnf, mode, W_USER, "%s(%ld) home '%s' %sremoved", 38544229Sdavidn a_name->val, (long) uid, home, 38644229Sdavidn stat(home, &st) == -1 ? "" : "not completely "); 38744229Sdavidn } 38820253Sjoerg } 38920253Sjoerg } 39020267Sjoerg return EXIT_SUCCESS; 39120253Sjoerg } else if (mode == M_PRINT) 39220267Sjoerg return print_user(pwd, getarg(args, 'P') != NULL); 39320253Sjoerg 39420253Sjoerg /* 39520253Sjoerg * The rest is edit code 39620253Sjoerg */ 39720253Sjoerg if ((arg = getarg(args, 'l')) != NULL) { 39820253Sjoerg if (strcmp(pwd->pw_name, "root") == 0) 39930259Scharnier errx(EX_DATAERR, "can't rename `root' account"); 40020679Sdavidn pwd->pw_name = pw_checkname((u_char *)arg->val, 0); 40120253Sjoerg } 40220253Sjoerg if ((arg = getarg(args, 'u')) != NULL && isdigit(*arg->val)) { 40320253Sjoerg pwd->pw_uid = (uid_t) atol(arg->val); 40420253Sjoerg if (pwd->pw_uid != 0 && strcmp(pwd->pw_name, "root") == 0) 40530259Scharnier errx(EX_DATAERR, "can't change uid of `root' account"); 40620253Sjoerg if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0) 40730259Scharnier warnx("WARNING: account `%s' will have a uid of 0 (superuser access!)", pwd->pw_name); 40820253Sjoerg } 40920253Sjoerg if ((arg = getarg(args, 'g')) != NULL && pwd->pw_uid != 0) /* Already checked this */ 41044229Sdavidn pwd->pw_gid = (gid_t) GETGRNAM(cnf->default_group)->gr_gid; 41120253Sjoerg 41220253Sjoerg if ((arg = getarg(args, 'p')) != NULL) { 41320253Sjoerg if (*arg->val == '\0' || strcmp(arg->val, "0") == 0) 41420253Sjoerg pwd->pw_change = 0; 41520253Sjoerg else { 41620253Sjoerg time_t now = time(NULL); 41720253Sjoerg time_t expire = parse_date(now, arg->val); 41820253Sjoerg 41920253Sjoerg if (now == expire) 42030259Scharnier errx(EX_DATAERR, "invalid password change date `%s'", arg->val); 42120253Sjoerg pwd->pw_change = expire; 42220253Sjoerg } 42320253Sjoerg } 42420267Sjoerg if ((arg = getarg(args, 'e')) != NULL) { 42520253Sjoerg if (*arg->val == '\0' || strcmp(arg->val, "0") == 0) 42620253Sjoerg pwd->pw_expire = 0; 42720253Sjoerg else { 42820253Sjoerg time_t now = time(NULL); 42920253Sjoerg time_t expire = parse_date(now, arg->val); 43020253Sjoerg 43120253Sjoerg if (now == expire) 43230259Scharnier errx(EX_DATAERR, "invalid account expiry date `%s'", arg->val); 43320253Sjoerg pwd->pw_expire = expire; 43420253Sjoerg } 43520253Sjoerg } 43620253Sjoerg if ((arg = getarg(args, 's')) != NULL) 43720253Sjoerg pwd->pw_shell = shell_path(cnf->shelldir, cnf->shells, arg->val); 43820253Sjoerg 43920253Sjoerg if (getarg(args, 'L')) 44020253Sjoerg pwd->pw_class = cnf->default_class; 44120253Sjoerg 44220747Sdavidn if ((arg = getarg(args, 'd')) != NULL) { 44320747Sdavidn if (stat(pwd->pw_dir = arg->val, &st) == -1) { 44420747Sdavidn if (getarg(args, 'm') == NULL && strcmp(pwd->pw_dir, "/nonexistent") != 0) 44530259Scharnier warnx("WARNING: home `%s' does not exist", pwd->pw_dir); 44620747Sdavidn } else if (!S_ISDIR(st.st_mode)) 44730259Scharnier warnx("WARNING: home `%s' is not a directory", pwd->pw_dir); 44820747Sdavidn } 44920747Sdavidn 45020267Sjoerg if ((arg = getarg(args, 'w')) != NULL && getarg(args, 'h') == NULL) 45120267Sjoerg pwd->pw_passwd = pw_password(cnf, args, pwd->pw_name); 45220267Sjoerg 45320253Sjoerg } else { 45420253Sjoerg if (a_name == NULL) /* Required */ 45530259Scharnier errx(EX_DATAERR, "login name required"); 45644229Sdavidn else if ((pwd = GETPWNAM(a_name->val)) != NULL) /* Exists */ 45730259Scharnier errx(EX_DATAERR, "login name `%s' already exists", a_name->val); 45820253Sjoerg 45920253Sjoerg /* 46020253Sjoerg * Now, set up defaults for a new user 46120253Sjoerg */ 46220253Sjoerg pwd = &fakeuser; 46320253Sjoerg pwd->pw_name = a_name->val; 46420253Sjoerg pwd->pw_class = cnf->default_class ? cnf->default_class : ""; 46520253Sjoerg pwd->pw_passwd = pw_password(cnf, args, pwd->pw_name); 46620253Sjoerg pwd->pw_uid = pw_uidpolicy(cnf, args); 46720253Sjoerg pwd->pw_gid = pw_gidpolicy(cnf, args, pwd->pw_name, (gid_t) pwd->pw_uid); 46820253Sjoerg pwd->pw_change = pw_pwdpolicy(cnf, args); 46920253Sjoerg pwd->pw_expire = pw_exppolicy(cnf, args); 47020253Sjoerg pwd->pw_dir = pw_homepolicy(cnf, args, pwd->pw_name); 47120253Sjoerg pwd->pw_shell = pw_shellpolicy(cnf, args, NULL); 47220253Sjoerg 47320253Sjoerg if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0) 47430259Scharnier warnx("WARNING: new account `%s' has a uid of 0 (superuser access!)", pwd->pw_name); 47520253Sjoerg } 47620253Sjoerg 47720253Sjoerg /* 47820253Sjoerg * Shared add/edit code 47920253Sjoerg */ 48020253Sjoerg if ((arg = getarg(args, 'c')) != NULL) 48120679Sdavidn pwd->pw_gecos = pw_checkname((u_char *)arg->val, 1); 48220253Sjoerg 48320253Sjoerg if ((arg = getarg(args, 'h')) != NULL) { 48420253Sjoerg if (strcmp(arg->val, "-") == 0) 48520253Sjoerg pwd->pw_passwd = "*"; /* No access */ 48620253Sjoerg else { 48720253Sjoerg int fd = atoi(arg->val); 48820253Sjoerg int b; 48920253Sjoerg int istty = isatty(fd); 49020253Sjoerg struct termios t; 49120253Sjoerg 49220253Sjoerg if (istty) { 49320253Sjoerg if (tcgetattr(fd, &t) == -1) 49420253Sjoerg istty = 0; 49520253Sjoerg else { 49620253Sjoerg struct termios n = t; 49720253Sjoerg 49820253Sjoerg /* Disable echo */ 49920253Sjoerg n.c_lflag &= ~(ECHO); 50020253Sjoerg tcsetattr(fd, TCSANOW, &n); 50120253Sjoerg printf("%sassword for user %s:", (mode == M_UPDATE) ? "New p" : "P", pwd->pw_name); 50220253Sjoerg fflush(stdout); 50320253Sjoerg } 50420253Sjoerg } 50520253Sjoerg b = read(fd, line, sizeof(line) - 1); 50620253Sjoerg if (istty) { /* Restore state */ 50720253Sjoerg tcsetattr(fd, TCSANOW, &t); 50820253Sjoerg fputc('\n', stdout); 50920253Sjoerg fflush(stdout); 51020253Sjoerg } 51120253Sjoerg if (b < 0) { 51230259Scharnier warn("-h file descriptor"); 51320267Sjoerg return EX_IOERR; 51420253Sjoerg } 51520253Sjoerg line[b] = '\0'; 51620253Sjoerg if ((p = strpbrk(line, " \t\r\n")) != NULL) 51720253Sjoerg *p = '\0'; 51820253Sjoerg if (!*line) 51930259Scharnier errx(EX_DATAERR, "empty password read on file descriptor %d", fd); 52020253Sjoerg pwd->pw_passwd = pw_pwcrypt(line); 52120253Sjoerg } 52220253Sjoerg } 52320267Sjoerg 52420267Sjoerg /* 52520267Sjoerg * Special case: -N only displays & exits 52620267Sjoerg */ 52720267Sjoerg if (getarg(args, 'N') != NULL) 52820267Sjoerg return print_user(pwd, getarg(args, 'P') != NULL); 52920267Sjoerg 53021330Sdavidn r = r1 = 1; 53121330Sdavidn if (mode == M_ADD) { 53221330Sdavidn r = addpwent(pwd); 53321330Sdavidn if (r && cnf->nispasswd && *cnf->nispasswd=='/') 53421330Sdavidn r1 = addnispwent(cnf->nispasswd, pwd); 53521330Sdavidn } else if (mode == M_UPDATE) { 53621330Sdavidn r = chgpwent(a_name->val, pwd); 53721330Sdavidn if (r && cnf->nispasswd && *cnf->nispasswd=='/') 53821330Sdavidn r1 = chgnispwent(cnf->nispasswd, a_name->val, pwd); 53921330Sdavidn } 54021330Sdavidn 54121330Sdavidn if (!r) { 54230259Scharnier warn("password update"); 54320267Sjoerg return EX_IOERR; 54421330Sdavidn } else if (!r1) { 54530259Scharnier warn("WARNING: NIS password update"); 54621330Sdavidn /* Keep on trucking */ 54720253Sjoerg } 54821330Sdavidn 54920253Sjoerg /* 55020253Sjoerg * Ok, user is created or changed - now edit group file 55120253Sjoerg */ 55220253Sjoerg 55320253Sjoerg if (mode == M_ADD || getarg(args, 'G') != NULL) 55420253Sjoerg editgroups(pwd->pw_name, cnf->groups); 55520253Sjoerg 55620253Sjoerg /* pwd may have been invalidated */ 55744229Sdavidn if ((pwd = GETPWNAM(a_name->val)) == NULL) 55830259Scharnier errx(EX_NOUSER, "user '%s' disappeared during update", a_name->val); 55920253Sjoerg 56044229Sdavidn grp = GETGRGID(pwd->pw_gid); 56120253Sjoerg pw_log(cnf, mode, W_USER, "%s(%ld):%s(%d):%s:%s:%s", 56220253Sjoerg pwd->pw_name, (long) pwd->pw_uid, 56320253Sjoerg grp ? grp->gr_name : "unknown", (long) (grp ? grp->gr_gid : -1), 56420253Sjoerg pwd->pw_gecos, pwd->pw_dir, pwd->pw_shell); 56520253Sjoerg 56620253Sjoerg /* 56720253Sjoerg * If adding, let's touch and chown the user's mail file. This is not 56820253Sjoerg * strictly necessary under BSD with a 0755 maildir but it also 56920253Sjoerg * doesn't hurt anything to create the empty mailfile 57020253Sjoerg */ 57120253Sjoerg if (mode == M_ADD) { 57220253Sjoerg FILE *fp; 57320253Sjoerg 57444229Sdavidn if (!PWALTDIR()) { 57544229Sdavidn sprintf(line, "%s/%s", _PATH_MAILDIR, pwd->pw_name); 57644229Sdavidn close(open(line, O_RDWR | O_CREAT, 0600)); /* Preserve contents & 57744229Sdavidn * mtime */ 57844229Sdavidn chown(line, pwd->pw_uid, pwd->pw_gid); 57920253Sjoerg 58044229Sdavidn /* 58144229Sdavidn * Send mail to the new user as well, if we are asked to 58244229Sdavidn */ 58344229Sdavidn if (cnf->newmail && *cnf->newmail && (fp = fopen(cnf->newmail, "r")) != NULL) { 58444229Sdavidn FILE *pfp = popen(_PATH_SENDMAIL " -t", "w"); 58520253Sjoerg 58644229Sdavidn if (pfp == NULL) 58744229Sdavidn warn("sendmail"); 58844229Sdavidn else { 58944229Sdavidn fprintf(pfp, "From: root\n" "To: %s\n" "Subject: Welcome!\n\n", pwd->pw_name); 59044229Sdavidn while (fgets(line, sizeof(line), fp) != NULL) { 59144229Sdavidn /* Do substitutions? */ 59244229Sdavidn fputs(line, pfp); 59344229Sdavidn } 59444229Sdavidn pclose(pfp); 59544229Sdavidn pw_log(cnf, mode, W_USER, "%s(%ld) new user mail sent", 59644229Sdavidn pwd->pw_name, (long) pwd->pw_uid); 59720253Sjoerg } 59844229Sdavidn fclose(fp); 59920253Sjoerg } 60020253Sjoerg } 60120253Sjoerg } 60220253Sjoerg /* 60320253Sjoerg * Finally, let's create and populate the user's home directory. Note 60420253Sjoerg * that this also `works' for editing users if -m is used, but 60520253Sjoerg * existing files will *not* be overwritten. 60620253Sjoerg */ 60744229Sdavidn if (!PWALTDIR() && getarg(args, 'm') != NULL && pwd->pw_dir && *pwd->pw_dir == '/' && pwd->pw_dir[1]) { 60820253Sjoerg copymkdir(pwd->pw_dir, cnf->dotdir, 0755, pwd->pw_uid, pwd->pw_gid); 60920253Sjoerg pw_log(cnf, mode, W_USER, "%s(%ld) home %s made", 61020253Sjoerg pwd->pw_name, (long) pwd->pw_uid, pwd->pw_dir); 61120253Sjoerg } 61220267Sjoerg return EXIT_SUCCESS; 61320253Sjoerg} 61420253Sjoerg 61520253Sjoerg 61620253Sjoergstatic uid_t 61720253Sjoergpw_uidpolicy(struct userconf * cnf, struct cargs * args) 61820253Sjoerg{ 61920253Sjoerg struct passwd *pwd; 62020253Sjoerg uid_t uid = (uid_t) - 1; 62120253Sjoerg struct carg *a_uid = getarg(args, 'u'); 62220253Sjoerg 62320253Sjoerg /* 62420253Sjoerg * Check the given uid, if any 62520253Sjoerg */ 62620253Sjoerg if (a_uid != NULL) { 62720253Sjoerg uid = (uid_t) atol(a_uid->val); 62820253Sjoerg 62944229Sdavidn if ((pwd = GETPWUID(uid)) != NULL && getarg(args, 'o') == NULL) 63030259Scharnier errx(EX_DATAERR, "uid `%ld' has already been allocated", (long) pwd->pw_uid); 63120253Sjoerg } else { 63220253Sjoerg struct bitmap bm; 63320253Sjoerg 63420253Sjoerg /* 63520253Sjoerg * We need to allocate the next available uid under one of 63620253Sjoerg * two policies a) Grab the first unused uid b) Grab the 63720253Sjoerg * highest possible unused uid 63820253Sjoerg */ 63920253Sjoerg if (cnf->min_uid >= cnf->max_uid) { /* Sanity 64020253Sjoerg * claus^H^H^H^Hheck */ 64120253Sjoerg cnf->min_uid = 1000; 64220253Sjoerg cnf->max_uid = 32000; 64320253Sjoerg } 64420253Sjoerg bm = bm_alloc(cnf->max_uid - cnf->min_uid + 1); 64520253Sjoerg 64620253Sjoerg /* 64720253Sjoerg * Now, let's fill the bitmap from the password file 64820253Sjoerg */ 64944229Sdavidn SETPWENT(); 65044229Sdavidn while ((pwd = GETPWENT()) != NULL) 65144229Sdavidn if (pwd->pw_uid >= (uid_t) cnf->min_uid && pwd->pw_uid <= (uid_t) cnf->max_uid) 65220253Sjoerg bm_setbit(&bm, pwd->pw_uid - cnf->min_uid); 65344229Sdavidn ENDPWENT(); 65420253Sjoerg 65520253Sjoerg /* 65620253Sjoerg * Then apply the policy, with fallback to reuse if necessary 65720253Sjoerg */ 65820253Sjoerg if (cnf->reuse_uids || (uid = (uid_t) (bm_lastset(&bm) + cnf->min_uid + 1)) > cnf->max_uid) 65920253Sjoerg uid = (uid_t) (bm_firstunset(&bm) + cnf->min_uid); 66020253Sjoerg 66120253Sjoerg /* 66220253Sjoerg * Another sanity check 66320253Sjoerg */ 66420253Sjoerg if (uid < cnf->min_uid || uid > cnf->max_uid) 66530259Scharnier errx(EX_SOFTWARE, "unable to allocate a new uid - range fully used"); 66620253Sjoerg bm_dealloc(&bm); 66720253Sjoerg } 66820253Sjoerg return uid; 66920253Sjoerg} 67020253Sjoerg 67120253Sjoerg 67220253Sjoergstatic uid_t 67320253Sjoergpw_gidpolicy(struct userconf * cnf, struct cargs * args, char *nam, gid_t prefer) 67420253Sjoerg{ 67520253Sjoerg struct group *grp; 67620253Sjoerg gid_t gid = (uid_t) - 1; 67720253Sjoerg struct carg *a_gid = getarg(args, 'g'); 67820253Sjoerg 67920253Sjoerg /* 68020253Sjoerg * If no arg given, see if default can help out 68120253Sjoerg */ 68220253Sjoerg if (a_gid == NULL && cnf->default_group && *cnf->default_group) 68320253Sjoerg a_gid = addarg(args, 'g', cnf->default_group); 68420253Sjoerg 68520253Sjoerg /* 68620253Sjoerg * Check the given gid, if any 68720253Sjoerg */ 68844229Sdavidn SETGRENT(); 68920253Sjoerg if (a_gid != NULL) { 69044229Sdavidn if ((grp = GETGRNAM(a_gid->val)) == NULL) { 69120253Sjoerg gid = (gid_t) atol(a_gid->val); 69244229Sdavidn if ((gid == 0 && !isdigit(*a_gid->val)) || (grp = GETGRGID(gid)) == NULL) 69330259Scharnier errx(EX_NOUSER, "group `%s' is not defined", a_gid->val); 69420253Sjoerg } 69520253Sjoerg gid = grp->gr_gid; 69644229Sdavidn } else if ((grp = GETGRNAM(nam)) != NULL && grp->gr_mem[0] == NULL) { 69720267Sjoerg gid = grp->gr_gid; /* Already created? Use it anyway... */ 69820253Sjoerg } else { 69920253Sjoerg struct cargs grpargs; 70020253Sjoerg char tmp[32]; 70120253Sjoerg 70220253Sjoerg LIST_INIT(&grpargs); 70320253Sjoerg addarg(&grpargs, 'n', nam); 70420253Sjoerg 70520253Sjoerg /* 70620253Sjoerg * We need to auto-create a group with the user's name. We 70720253Sjoerg * can send all the appropriate output to our sister routine 70820253Sjoerg * bit first see if we can create a group with gid==uid so we 70920253Sjoerg * can keep the user and group ids in sync. We purposely do 71020253Sjoerg * NOT check the gid range if we can force the sync. If the 71120253Sjoerg * user's name dups an existing group, then the group add 71220253Sjoerg * function will happily handle that case for us and exit. 71320253Sjoerg */ 71444229Sdavidn if (GETGRGID(prefer) == NULL) { 71520253Sjoerg sprintf(tmp, "%lu", (unsigned long) prefer); 71620253Sjoerg addarg(&grpargs, 'g', tmp); 71720253Sjoerg } 71820267Sjoerg if (getarg(args, 'N')) 71920267Sjoerg { 72020267Sjoerg addarg(&grpargs, 'N', NULL); 72120267Sjoerg addarg(&grpargs, 'q', NULL); 72220267Sjoerg gid = pw_group(cnf, M_NEXT, &grpargs); 72320267Sjoerg } 72420267Sjoerg else 72520267Sjoerg { 72620267Sjoerg pw_group(cnf, M_ADD, &grpargs); 72744229Sdavidn if ((grp = GETGRNAM(nam)) != NULL) 72820267Sjoerg gid = grp->gr_gid; 72920267Sjoerg } 73020253Sjoerg a_gid = grpargs.lh_first; 73120253Sjoerg while (a_gid != NULL) { 73220253Sjoerg struct carg *t = a_gid->list.le_next; 73320253Sjoerg LIST_REMOVE(a_gid, list); 73420253Sjoerg a_gid = t; 73520253Sjoerg } 73620253Sjoerg } 73744229Sdavidn ENDGRENT(); 73820253Sjoerg return gid; 73920253Sjoerg} 74020253Sjoerg 74120253Sjoerg 74220253Sjoergstatic time_t 74320253Sjoergpw_pwdpolicy(struct userconf * cnf, struct cargs * args) 74420253Sjoerg{ 74520253Sjoerg time_t result = 0; 74620253Sjoerg time_t now = time(NULL); 74727831Sdavidn struct carg *arg = getarg(args, 'p'); 74820253Sjoerg 74920253Sjoerg if (arg != NULL) { 75020253Sjoerg if ((result = parse_date(now, arg->val)) == now) 75130259Scharnier errx(EX_DATAERR, "invalid date/time `%s'", arg->val); 75220253Sjoerg } else if (cnf->password_days > 0) 75320253Sjoerg result = now + ((long) cnf->password_days * 86400L); 75420253Sjoerg return result; 75520253Sjoerg} 75620253Sjoerg 75720253Sjoerg 75820253Sjoergstatic time_t 75920253Sjoergpw_exppolicy(struct userconf * cnf, struct cargs * args) 76020253Sjoerg{ 76120253Sjoerg time_t result = 0; 76220253Sjoerg time_t now = time(NULL); 76320253Sjoerg struct carg *arg = getarg(args, 'e'); 76420253Sjoerg 76520253Sjoerg if (arg != NULL) { 76620253Sjoerg if ((result = parse_date(now, arg->val)) == now) 76730259Scharnier errx(EX_DATAERR, "invalid date/time `%s'", arg->val); 76820253Sjoerg } else if (cnf->expire_days > 0) 76920253Sjoerg result = now + ((long) cnf->expire_days * 86400L); 77020253Sjoerg return result; 77120253Sjoerg} 77220253Sjoerg 77320253Sjoerg 77420253Sjoergstatic char * 77520253Sjoergpw_homepolicy(struct userconf * cnf, struct cargs * args, char const * user) 77620253Sjoerg{ 77720253Sjoerg struct carg *arg = getarg(args, 'd'); 77820253Sjoerg 77920253Sjoerg if (arg) 78020253Sjoerg return arg->val; 78120253Sjoerg else { 78220253Sjoerg static char home[128]; 78320253Sjoerg 78420253Sjoerg if (cnf->home == NULL || *cnf->home == '\0') 78530259Scharnier errx(EX_CONFIG, "no base home directory set"); 78620253Sjoerg sprintf(home, "%s/%s", cnf->home, user); 78720253Sjoerg return home; 78820253Sjoerg } 78920253Sjoerg} 79020253Sjoerg 79120253Sjoergstatic char * 79220253Sjoergshell_path(char const * path, char *shells[], char *sh) 79320253Sjoerg{ 79420253Sjoerg if (sh != NULL && (*sh == '/' || *sh == '\0')) 79520253Sjoerg return sh; /* specified full path or forced none */ 79620253Sjoerg else { 79720253Sjoerg char *p; 79820253Sjoerg char paths[_UC_MAXLINE]; 79920253Sjoerg 80020253Sjoerg /* 80120253Sjoerg * We need to search paths 80220253Sjoerg */ 80320253Sjoerg strncpy(paths, path, sizeof paths); 80420253Sjoerg paths[sizeof paths - 1] = '\0'; 80520253Sjoerg for (p = strtok(paths, ": \t\r\n"); p != NULL; p = strtok(NULL, ": \t\r\n")) { 80620253Sjoerg int i; 80720253Sjoerg static char shellpath[256]; 80820253Sjoerg 80920253Sjoerg if (sh != NULL) { 81020253Sjoerg sprintf(shellpath, "%s/%s", p, sh); 81120253Sjoerg if (access(shellpath, X_OK) == 0) 81220253Sjoerg return shellpath; 81320253Sjoerg } else 81420253Sjoerg for (i = 0; i < _UC_MAXSHELLS && shells[i] != NULL; i++) { 81520253Sjoerg sprintf(shellpath, "%s/%s", p, shells[i]); 81620253Sjoerg if (access(shellpath, X_OK) == 0) 81720253Sjoerg return shellpath; 81820253Sjoerg } 81920253Sjoerg } 82020253Sjoerg if (sh == NULL) 82130259Scharnier errx(EX_OSFILE, "can't find shell `%s' in shell paths", sh); 82230259Scharnier errx(EX_CONFIG, "no default shell available or defined"); 82320253Sjoerg return NULL; 82420253Sjoerg } 82520253Sjoerg} 82620253Sjoerg 82720253Sjoerg 82820253Sjoergstatic char * 82920253Sjoergpw_shellpolicy(struct userconf * cnf, struct cargs * args, char *newshell) 83020253Sjoerg{ 83120253Sjoerg char *sh = newshell; 83220253Sjoerg struct carg *arg = getarg(args, 's'); 83320253Sjoerg 83420253Sjoerg if (newshell == NULL && arg != NULL) 83520253Sjoerg sh = arg->val; 83620253Sjoerg return shell_path(cnf->shelldir, cnf->shells, sh ? sh : cnf->shell_default); 83720253Sjoerg} 83820253Sjoerg 83920253Sjoergstatic char const chars[] = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ."; 84020253Sjoerg 84120253Sjoergchar * 84220253Sjoergpw_pwcrypt(char *password) 84320253Sjoerg{ 84420253Sjoerg int i; 84520253Sjoerg char salt[12]; 84620253Sjoerg 84720253Sjoerg static char buf[256]; 84820253Sjoerg 84920253Sjoerg /* 85020253Sjoerg * Calculate a salt value 85120253Sjoerg */ 85224214Sache if (!randinit) { 85324214Sache randinit = 1; 85424214Sache#ifdef __FreeBSD__ 85526626Sache srandomdev(); 85626626Sache#else 85726626Sache srandom((unsigned long) (time(NULL) ^ getpid())); 85824214Sache#endif 85924214Sache } 86020253Sjoerg for (i = 0; i < 8; i++) 86120253Sjoerg salt[i] = chars[random() % 63]; 86220253Sjoerg salt[i] = '\0'; 86320253Sjoerg 86420253Sjoerg return strcpy(buf, crypt(password, salt)); 86520253Sjoerg} 86620253Sjoerg 86720590Sdavidn#if defined(USE_MD5RAND) 86820555Sdavidnu_char * 86920590Sdavidnpw_getrand(u_char *buf, int len) /* cryptographically secure rng */ 87020555Sdavidn{ 87120590Sdavidn int i; 87220590Sdavidn for (i=0;i<len;i+=16) { 87320590Sdavidn u_char ubuf[16]; 87420590Sdavidn 87520590Sdavidn MD5_CTX md5_ctx; 87620590Sdavidn struct timeval tv, tvo; 87720590Sdavidn struct rusage ru; 87820590Sdavidn int n=0; 87920590Sdavidn int t; 88020590Sdavidn 88120590Sdavidn MD5Init (&md5_ctx); 88220590Sdavidn t=getpid(); 88320590Sdavidn MD5Update (&md5_ctx, (u_char*)&t, sizeof t); 88420590Sdavidn t=getppid(); 88520590Sdavidn MD5Update (&md5_ctx, (u_char*)&t, sizeof t); 88620590Sdavidn gettimeofday (&tvo, NULL); 88720590Sdavidn do { 88820590Sdavidn getrusage (RUSAGE_SELF, &ru); 88920590Sdavidn MD5Update (&md5_ctx, (u_char*)&ru, sizeof ru); 89020590Sdavidn gettimeofday (&tv, NULL); 89120590Sdavidn MD5Update (&md5_ctx, (u_char*)&tv, sizeof tv); 89220590Sdavidn } while (n++<20 || tv.tv_usec-tvo.tv_usec<100*1000); 89320590Sdavidn MD5Final (ubuf, &md5_ctx); 89420590Sdavidn memcpy(buf+i, ubuf, MIN(16, len-n)); 89520590Sdavidn } 89620590Sdavidn return buf; 89720555Sdavidn} 89820253Sjoerg 89920590Sdavidn#else /* Portable version */ 90020590Sdavidn 90120590Sdavidnstatic u_char * 90220590Sdavidnpw_getrand(u_char *buf, int len) 90320590Sdavidn{ 90420590Sdavidn int i; 90520590Sdavidn 90620590Sdavidn for (i = 0; i < len; i++) { 90724214Sache unsigned long val = random(); 90820590Sdavidn /* Use all bits in the random value */ 90920590Sdavidn buf[i]=(u_char)((val >> 24) ^ (val >> 16) ^ (val >> 8) ^ val); 91020590Sdavidn } 91120590Sdavidn return buf; 91220590Sdavidn} 91320590Sdavidn 91420590Sdavidn#endif 91520590Sdavidn 91620253Sjoergstatic char * 91720253Sjoergpw_password(struct userconf * cnf, struct cargs * args, char const * user) 91820253Sjoerg{ 91920253Sjoerg int i, l; 92020253Sjoerg char pwbuf[32]; 92120555Sdavidn u_char rndbuf[sizeof pwbuf]; 92220253Sjoerg 92320253Sjoerg switch (cnf->default_password) { 92420253Sjoerg case -1: /* Random password */ 92524214Sache if (!randinit) { 92624214Sache randinit = 1; 92724214Sache#ifdef __FreeBSD__ 92826626Sache srandomdev(); 92926626Sache#else 93026626Sache srandom((unsigned long) (time(NULL) ^ getpid())); 93124214Sache#endif 93224214Sache } 93320253Sjoerg l = (random() % 8 + 8); /* 8 - 16 chars */ 93420555Sdavidn pw_getrand(rndbuf, l); 93520253Sjoerg for (i = 0; i < l; i++) 93642245Sbillf pwbuf[i] = chars[rndbuf[i] % (sizeof(chars)-1)]; 93720253Sjoerg pwbuf[i] = '\0'; 93820253Sjoerg 93920253Sjoerg /* 94020253Sjoerg * We give this information back to the user 94120253Sjoerg */ 94220267Sjoerg if (getarg(args, 'h') == NULL && getarg(args, 'N') == NULL) { 94320712Sdavidn if (isatty(1)) 94420712Sdavidn printf("Password for '%s' is: ", user); 94520253Sjoerg printf("%s\n", pwbuf); 94620253Sjoerg fflush(stdout); 94720253Sjoerg } 94820253Sjoerg break; 94920253Sjoerg 95020253Sjoerg case -2: /* No password at all! */ 95120253Sjoerg return ""; 95220253Sjoerg 95320253Sjoerg case 0: /* No login - default */ 95420253Sjoerg default: 95520253Sjoerg return "*"; 95620253Sjoerg 95720253Sjoerg case 1: /* user's name */ 95820253Sjoerg strncpy(pwbuf, user, sizeof pwbuf); 95920253Sjoerg pwbuf[sizeof pwbuf - 1] = '\0'; 96020253Sjoerg break; 96120253Sjoerg } 96220253Sjoerg return pw_pwcrypt(pwbuf); 96320253Sjoerg} 96420253Sjoerg 96520253Sjoerg 96620253Sjoergstatic int 96720253Sjoergprint_user(struct passwd * pwd, int pretty) 96820253Sjoerg{ 96920253Sjoerg if (!pretty) { 97020253Sjoerg char buf[_UC_MAXLINE]; 97120253Sjoerg 97220253Sjoerg fmtpwent(buf, pwd); 97320253Sjoerg fputs(buf, stdout); 97420253Sjoerg } else { 97520267Sjoerg int j; 97620253Sjoerg char *p; 97744229Sdavidn struct group *grp = GETGRGID(pwd->pw_gid); 97820253Sjoerg char uname[60] = "User &", office[60] = "[None]", 97920253Sjoerg wphone[60] = "[None]", hphone[60] = "[None]"; 98020590Sdavidn char acexpire[32] = "[None]", pwexpire[32] = "[None]"; 98120590Sdavidn struct tm * tptr; 98220253Sjoerg 98320253Sjoerg if ((p = strtok(pwd->pw_gecos, ",")) != NULL) { 98420253Sjoerg strncpy(uname, p, sizeof uname); 98520253Sjoerg uname[sizeof uname - 1] = '\0'; 98620253Sjoerg if ((p = strtok(NULL, ",")) != NULL) { 98720253Sjoerg strncpy(office, p, sizeof office); 98820253Sjoerg office[sizeof office - 1] = '\0'; 98920253Sjoerg if ((p = strtok(NULL, ",")) != NULL) { 99020253Sjoerg strncpy(wphone, p, sizeof wphone); 99120253Sjoerg wphone[sizeof wphone - 1] = '\0'; 99220253Sjoerg if ((p = strtok(NULL, "")) != NULL) { 99320253Sjoerg strncpy(hphone, p, sizeof hphone); 99420253Sjoerg hphone[sizeof hphone - 1] = '\0'; 99520253Sjoerg } 99620253Sjoerg } 99720253Sjoerg } 99820253Sjoerg } 99920253Sjoerg /* 100020253Sjoerg * Handle '&' in gecos field 100120253Sjoerg */ 100220253Sjoerg if ((p = strchr(uname, '&')) != NULL) { 100320253Sjoerg int l = strlen(pwd->pw_name); 100420253Sjoerg int m = strlen(p); 100520253Sjoerg 100620253Sjoerg memmove(p + l, p + 1, m); 100720253Sjoerg memmove(p, pwd->pw_name, l); 100820253Sjoerg *p = (char) toupper(*p); 100920253Sjoerg } 101020590Sdavidn if (pwd->pw_expire > (time_t)0 && (tptr = localtime(&pwd->pw_expire)) != NULL) 101120590Sdavidn strftime(acexpire, sizeof acexpire, "%c", tptr); 101220590Sdavidn if (pwd->pw_change > (time_t)9 && (tptr = localtime(&pwd->pw_change)) != NULL) 101320590Sdavidn strftime(pwexpire, sizeof pwexpire, "%c", tptr); 101422394Sdavidn printf("Login Name: %-15s #%-12ld Group: %-15s #%ld\n" 101520747Sdavidn " Full Name: %s\n" 101620747Sdavidn " Home: %-26.26s Class: %s\n" 101720747Sdavidn " Shell: %-26.26s Office: %s\n" 101820747Sdavidn "Work Phone: %-26.26s Home Phone: %s\n" 101920747Sdavidn "Acc Expire: %-26.26s Pwd Expire: %s\n", 102020253Sjoerg pwd->pw_name, (long) pwd->pw_uid, 102120253Sjoerg grp ? grp->gr_name : "(invalid)", (long) pwd->pw_gid, 102220253Sjoerg uname, pwd->pw_dir, pwd->pw_class, 102320590Sdavidn pwd->pw_shell, office, wphone, hphone, 102420590Sdavidn acexpire, pwexpire); 102544229Sdavidn SETGRENT(); 102620267Sjoerg j = 0; 102744229Sdavidn while ((grp=GETGRENT()) != NULL) 102820267Sjoerg { 102920267Sjoerg int i = 0; 103020747Sdavidn while (grp->gr_mem[i] != NULL) 103120267Sjoerg { 103220267Sjoerg if (strcmp(grp->gr_mem[i], pwd->pw_name)==0) 103320267Sjoerg { 103420747Sdavidn printf(j++ == 0 ? " Groups: %s" : ",%s", grp->gr_name); 103520267Sjoerg break; 103620267Sjoerg } 103720267Sjoerg ++i; 103820267Sjoerg } 103920267Sjoerg } 104044229Sdavidn ENDGRENT(); 104120267Sjoerg printf("%s\n", j ? "\n" : ""); 104220253Sjoerg } 104320267Sjoerg return EXIT_SUCCESS; 104420253Sjoerg} 104520253Sjoerg 104620679Sdavidnchar * 104720679Sdavidnpw_checkname(u_char *name, int gecos) 104820253Sjoerg{ 104920253Sjoerg int l = 0; 105021052Sdavidn char const *notch = gecos ? ":!@" : " ,\t:+&#%$^()!@~*?<>=|\\/\""; 105120253Sjoerg 105220253Sjoerg while (name[l]) { 105321052Sdavidn if (strchr(notch, name[l]) != NULL || name[l] < ' ' || name[l] == 127 || 105421052Sdavidn (!gecos && l==0 && name[l] == '-') || /* leading '-' */ 105521052Sdavidn (!gecos && name[l] & 0x80)) /* 8-bit */ 105630259Scharnier errx(EX_DATAERR, (name[l] >= ' ' && name[l] < 127) 105730259Scharnier ? "invalid character `%c' in field" 105830259Scharnier : "invalid character 0x%02x in field", 105920325Sjoerg name[l]); 106020253Sjoerg ++l; 106120253Sjoerg } 106222394Sdavidn if (!gecos && l > LOGNAMESIZE) 106330259Scharnier errx(EX_DATAERR, "name too long `%s'", name); 106420679Sdavidn return (char *)name; 106520253Sjoerg} 106620253Sjoerg 106720253Sjoerg 106820253Sjoergstatic void 106920253Sjoergrmat(uid_t uid) 107020253Sjoerg{ 107120253Sjoerg DIR *d = opendir("/var/at/jobs"); 107220253Sjoerg 107320253Sjoerg if (d != NULL) { 107420253Sjoerg struct dirent *e; 107520253Sjoerg 107620253Sjoerg while ((e = readdir(d)) != NULL) { 107720253Sjoerg struct stat st; 107820253Sjoerg 107920253Sjoerg if (strncmp(e->d_name, ".lock", 5) != 0 && 108020253Sjoerg stat(e->d_name, &st) == 0 && 108120253Sjoerg !S_ISDIR(st.st_mode) && 108220253Sjoerg st.st_uid == uid) { 108320253Sjoerg char tmp[MAXPATHLEN]; 108420253Sjoerg 108520253Sjoerg sprintf(tmp, "/usr/bin/atrm %s", e->d_name); 108620253Sjoerg system(tmp); 108720253Sjoerg } 108820253Sjoerg } 108920253Sjoerg closedir(d); 109020253Sjoerg } 109120253Sjoerg} 109220747Sdavidn 109320747Sdavidnstatic void 109420747Sdavidnrmskey(char const * name) 109520747Sdavidn{ 109620747Sdavidn static const char etcskey[] = "/etc/skeykeys"; 109721052Sdavidn FILE *fp = fopen(etcskey, "r+"); 109820747Sdavidn 109921052Sdavidn if (fp != NULL) { 110021052Sdavidn char tmp[1024]; 110121052Sdavidn off_t atofs = 0; 110221052Sdavidn int length = strlen(name); 110320747Sdavidn 110421052Sdavidn while (fgets(tmp, sizeof tmp, fp) != NULL) { 110521052Sdavidn if (strncmp(name, tmp, length) == 0 && tmp[length]==' ') { 110621052Sdavidn if (fseek(fp, atofs, SEEK_SET) == 0) { 110721052Sdavidn fwrite("#", 1, 1, fp); /* Comment username out */ 110821052Sdavidn } 110921052Sdavidn break; 111020747Sdavidn } 111121052Sdavidn atofs = ftell(fp); 111220747Sdavidn } 111321052Sdavidn /* 111421052Sdavidn * If we got an error of any sort, don't update! 111521052Sdavidn */ 111621052Sdavidn fclose(fp); 111720747Sdavidn } 111820747Sdavidn} 111920747Sdavidn 1120