pw_user.c revision 262865
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 262865 2014-03-06 19:58:03Z julian $"; 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> 4464918Sgreen#include <login_cap.h> 45242349Sbapt#include <pwd.h> 46242349Sbapt#include <grp.h> 47242349Sbapt#include <libutil.h> 4820253Sjoerg#include "pw.h" 4920253Sjoerg#include "bitmap.h" 5020253Sjoerg 5123318Sache#define LOGNAMESIZE (MAXLOGNAME-1) 5222394Sdavidn 5352512Sdavidnstatic char locked_str[] = "*LOCKED*"; 5424214Sache 5544386Sdavidnstatic int print_user(struct passwd * pwd, int pretty, int v7); 5620253Sjoergstatic uid_t pw_uidpolicy(struct userconf * cnf, struct cargs * args); 5720253Sjoergstatic uid_t pw_gidpolicy(struct userconf * cnf, struct cargs * args, char *nam, gid_t prefer); 5820253Sjoergstatic time_t pw_pwdpolicy(struct userconf * cnf, struct cargs * args); 5920253Sjoergstatic time_t pw_exppolicy(struct userconf * cnf, struct cargs * args); 6020253Sjoergstatic char *pw_homepolicy(struct userconf * cnf, struct cargs * args, char const * user); 6120253Sjoergstatic char *pw_shellpolicy(struct userconf * cnf, struct cargs * args, char *newshell); 6220253Sjoergstatic char *pw_password(struct userconf * cnf, struct cargs * args, char const * user); 6320253Sjoergstatic char *shell_path(char const * path, char *shells[], char *sh); 6420253Sjoergstatic void rmat(uid_t uid); 6585145Sachestatic void rmopie(char const * name); 6620253Sjoerg 6720253Sjoerg/*- 6820253Sjoerg * -C config configuration file 6920253Sjoerg * -q quiet operation 7020253Sjoerg * -n name login name 7120253Sjoerg * -u uid user id 7220253Sjoerg * -c comment user name/comment 7320253Sjoerg * -d directory home directory 7420253Sjoerg * -e date account expiry date 7520253Sjoerg * -p date password expiry date 7620253Sjoerg * -g grp primary group 7720253Sjoerg * -G grp1,grp2 additional groups 7820253Sjoerg * -m [ -k dir ] create and set up home 7920253Sjoerg * -s shell name of login shell 8020253Sjoerg * -o duplicate uid ok 8120253Sjoerg * -L class user class 8220253Sjoerg * -l name new login name 8320253Sjoerg * -h fd password filehandle 84124382Siedowse * -H fd encrypted password filehandle 8520253Sjoerg * -F force print or add 8620253Sjoerg * Setting defaults: 8720253Sjoerg * -D set user defaults 8820253Sjoerg * -b dir default home root dir 8920253Sjoerg * -e period default expiry period 9020253Sjoerg * -p period default password change period 9120253Sjoerg * -g group default group 9220253Sjoerg * -G grp1,grp2.. default additional groups 9320253Sjoerg * -L class default login class 9420253Sjoerg * -k dir default home skeleton 9520253Sjoerg * -s shell default shell 9620253Sjoerg * -w method default password method 9720253Sjoerg */ 9820253Sjoerg 9920253Sjoergint 10020253Sjoergpw_user(struct userconf * cnf, int mode, struct cargs * args) 10120253Sjoerg{ 10252527Sdavidn int rc, edited = 0; 10320253Sjoerg char *p = NULL; 10452512Sdavidn char *passtmp; 10520253Sjoerg struct carg *a_name; 10620253Sjoerg struct carg *a_uid; 10720253Sjoerg struct carg *arg; 10820253Sjoerg struct passwd *pwd = NULL; 10920253Sjoerg struct group *grp; 11020253Sjoerg struct stat st; 11120747Sdavidn char line[_PASSWORD_LEN+1]; 11282868Sdd FILE *fp; 113167919Sle char *dmode_c; 114167919Sle void *set = NULL; 11520253Sjoerg 11620253Sjoerg static struct passwd fakeuser = 11720253Sjoerg { 11820253Sjoerg NULL, 11920253Sjoerg "*", 12020253Sjoerg -1, 12120253Sjoerg -1, 12220253Sjoerg 0, 12320253Sjoerg "", 12420253Sjoerg "User &", 12556000Sdavidn "/nonexistent", 12620253Sjoerg "/bin/sh", 12720253Sjoerg 0 12856000Sdavidn#if defined(__FreeBSD__) 12956000Sdavidn ,0 13056000Sdavidn#endif 13120253Sjoerg }; 13220253Sjoerg 13352512Sdavidn 13420253Sjoerg /* 13520267Sjoerg * With M_NEXT, we only need to return the 13620267Sjoerg * next uid to stdout 13720267Sjoerg */ 13820267Sjoerg if (mode == M_NEXT) 13920267Sjoerg { 14020267Sjoerg uid_t next = pw_uidpolicy(cnf, args); 14120267Sjoerg if (getarg(args, 'q')) 14220267Sjoerg return next; 14320267Sjoerg printf("%ld:", (long)next); 14420267Sjoerg pw_group(cnf, mode, args); 14520267Sjoerg return EXIT_SUCCESS; 14620267Sjoerg } 14720267Sjoerg 14820267Sjoerg /* 14920253Sjoerg * We can do all of the common legwork here 15020253Sjoerg */ 15120253Sjoerg 15220253Sjoerg if ((arg = getarg(args, 'b')) != NULL) { 15320267Sjoerg cnf->home = arg->val; 15420253Sjoerg } 15521052Sdavidn 156167919Sle if ((arg = getarg(args, 'M')) != NULL) { 157167919Sle dmode_c = arg->val; 158167919Sle if ((set = setmode(dmode_c)) == NULL) 159167919Sle errx(EX_DATAERR, "invalid directory creation mode '%s'", 160167919Sle dmode_c); 161219408Sjkim cnf->homemode = getmode(set, _DEF_DIRMODE); 162167919Sle free(set); 163168044Sle } 164167919Sle 16521052Sdavidn /* 16621052Sdavidn * If we'll need to use it or we're updating it, 16721052Sdavidn * then create the base home directory if necessary 16821052Sdavidn */ 169224535Sdelphij if (arg != NULL || getarg(args, 'm') != NULL) { 17021052Sdavidn int l = strlen(cnf->home); 17121052Sdavidn 17221052Sdavidn if (l > 1 && cnf->home[l-1] == '/') /* Shave off any trailing path delimiter */ 17321052Sdavidn cnf->home[--l] = '\0'; 17421052Sdavidn 17521052Sdavidn if (l < 2 || *cnf->home != '/') /* Check for absolute path name */ 17630259Scharnier errx(EX_DATAERR, "invalid base directory for home '%s'", cnf->home); 17721052Sdavidn 17821052Sdavidn if (stat(cnf->home, &st) == -1) { 17921052Sdavidn char dbuf[MAXPATHLEN]; 18021052Sdavidn 18121242Sdavidn /* 18221242Sdavidn * This is a kludge especially for Joerg :) 18321242Sdavidn * If the home directory would be created in the root partition, then 18421242Sdavidn * we really create it under /usr which is likely to have more space. 18521242Sdavidn * But we create a symlink from cnf->home -> "/usr" -> cnf->home 18621242Sdavidn */ 18721242Sdavidn if (strchr(cnf->home+1, '/') == NULL) { 18821242Sdavidn strcpy(dbuf, "/usr"); 18921242Sdavidn strncat(dbuf, cnf->home, MAXPATHLEN-5); 190219408Sjkim if (mkdir(dbuf, _DEF_DIRMODE) != -1 || errno == EEXIST) { 19121242Sdavidn chown(dbuf, 0, 0); 192148584Spjd /* 193148584Spjd * Skip first "/" and create symlink: 194148584Spjd * /home -> usr/home 195148584Spjd */ 196148584Spjd symlink(dbuf+1, cnf->home); 19721242Sdavidn } 19821242Sdavidn /* If this falls, fall back to old method */ 19921242Sdavidn } 200130633Srobert strlcpy(dbuf, cnf->home, sizeof(dbuf)); 201130633Srobert p = dbuf; 20221242Sdavidn if (stat(dbuf, &st) == -1) { 203252377Skientzle while ((p = strchr(p + 1, '/')) != NULL) { 20421242Sdavidn *p = '\0'; 20521242Sdavidn if (stat(dbuf, &st) == -1) { 206219408Sjkim if (mkdir(dbuf, _DEF_DIRMODE) == -1) 20721242Sdavidn goto direrr; 20821242Sdavidn chown(dbuf, 0, 0); 20921242Sdavidn } else if (!S_ISDIR(st.st_mode)) 21030259Scharnier errx(EX_OSFILE, "'%s' (root home parent) is not a directory", dbuf); 21121242Sdavidn *p = '/'; 21221242Sdavidn } 21321052Sdavidn } 21421242Sdavidn if (stat(dbuf, &st) == -1) { 215219408Sjkim if (mkdir(dbuf, _DEF_DIRMODE) == -1) { 21630259Scharnier direrr: err(EX_OSFILE, "mkdir '%s'", dbuf); 21721052Sdavidn } 21821052Sdavidn chown(dbuf, 0, 0); 21921052Sdavidn } 22021052Sdavidn } else if (!S_ISDIR(st.st_mode)) 22130259Scharnier errx(EX_OSFILE, "root home `%s' is not a directory", cnf->home); 22221052Sdavidn } 22321052Sdavidn 22420253Sjoerg if ((arg = getarg(args, 'e')) != NULL) 22520253Sjoerg cnf->expire_days = atoi(arg->val); 22620253Sjoerg 22721330Sdavidn if ((arg = getarg(args, 'y')) != NULL) 22821330Sdavidn cnf->nispasswd = arg->val; 22921330Sdavidn 23020253Sjoerg if ((arg = getarg(args, 'p')) != NULL && arg->val) 23120253Sjoerg cnf->password_days = atoi(arg->val); 23220253Sjoerg 23320253Sjoerg if ((arg = getarg(args, 'g')) != NULL) { 23463596Sdavidn if (!*(p = arg->val)) /* Handle empty group list specially */ 23563596Sdavidn cnf->default_group = ""; 23663596Sdavidn else { 23763596Sdavidn if ((grp = GETGRNAM(p)) == NULL) { 23863596Sdavidn if (!isdigit((unsigned char)*p) || (grp = GETGRGID((gid_t) atoi(p))) == NULL) 23963596Sdavidn errx(EX_NOUSER, "group `%s' does not exist", p); 24063596Sdavidn } 24163596Sdavidn cnf->default_group = newstr(grp->gr_name); 24220253Sjoerg } 24320253Sjoerg } 24420253Sjoerg if ((arg = getarg(args, 'L')) != NULL) 24520679Sdavidn cnf->default_class = pw_checkname((u_char *)arg->val, 0); 24620253Sjoerg 24720253Sjoerg if ((arg = getarg(args, 'G')) != NULL && arg->val) { 24852527Sdavidn int i = 0; 24920253Sjoerg 25020747Sdavidn for (p = strtok(arg->val, ", \t"); p != NULL; p = strtok(NULL, ", \t")) { 25144229Sdavidn if ((grp = GETGRNAM(p)) == NULL) { 25261957Sache if (!isdigit((unsigned char)*p) || (grp = GETGRGID((gid_t) atoi(p))) == NULL) 25330259Scharnier errx(EX_NOUSER, "group `%s' does not exist", p); 25420253Sjoerg } 25520747Sdavidn if (extendarray(&cnf->groups, &cnf->numgroups, i + 2) != -1) 25620747Sdavidn cnf->groups[i++] = newstr(grp->gr_name); 25720253Sjoerg } 25820747Sdavidn while (i < cnf->numgroups) 25920253Sjoerg cnf->groups[i++] = NULL; 26020253Sjoerg } 26152527Sdavidn 26220253Sjoerg if ((arg = getarg(args, 'k')) != NULL) { 26326088Sdavidn if (stat(cnf->dotdir = arg->val, &st) == -1 || !S_ISDIR(st.st_mode)) 26430259Scharnier errx(EX_OSFILE, "skeleton `%s' is not a directory or does not exist", cnf->dotdir); 26520253Sjoerg } 26652527Sdavidn 26720253Sjoerg if ((arg = getarg(args, 's')) != NULL) 26820253Sjoerg cnf->shell_default = arg->val; 26920253Sjoerg 27063600Sdavidn if ((arg = getarg(args, 'w')) != NULL) 27163600Sdavidn cnf->default_password = boolean_val(arg->val, cnf->default_password); 27220253Sjoerg if (mode == M_ADD && getarg(args, 'D')) { 27320253Sjoerg if (getarg(args, 'n') != NULL) 27430259Scharnier errx(EX_DATAERR, "can't combine `-D' with `-n name'"); 27520253Sjoerg if ((arg = getarg(args, 'u')) != NULL && (p = strtok(arg->val, ", \t")) != NULL) { 27620253Sjoerg if ((cnf->min_uid = (uid_t) atoi(p)) == 0) 27720253Sjoerg cnf->min_uid = 1000; 27820253Sjoerg if ((p = strtok(NULL, " ,\t")) == NULL || (cnf->max_uid = (uid_t) atoi(p)) < cnf->min_uid) 27920253Sjoerg cnf->max_uid = 32000; 28020253Sjoerg } 28120253Sjoerg if ((arg = getarg(args, 'i')) != NULL && (p = strtok(arg->val, ", \t")) != NULL) { 28220253Sjoerg if ((cnf->min_gid = (gid_t) atoi(p)) == 0) 28320253Sjoerg cnf->min_gid = 1000; 28420253Sjoerg if ((p = strtok(NULL, " ,\t")) == NULL || (cnf->max_gid = (gid_t) atoi(p)) < cnf->min_gid) 28520253Sjoerg cnf->max_gid = 32000; 28620253Sjoerg } 28720253Sjoerg 28820253Sjoerg arg = getarg(args, 'C'); 28920253Sjoerg if (write_userconfig(arg ? arg->val : NULL)) 29020267Sjoerg return EXIT_SUCCESS; 29130259Scharnier warn("config update"); 29220267Sjoerg return EX_IOERR; 29320253Sjoerg } 29452527Sdavidn 29520253Sjoerg if (mode == M_PRINT && getarg(args, 'a')) { 29620267Sjoerg int pretty = getarg(args, 'P') != NULL; 29744386Sdavidn int v7 = getarg(args, '7') != NULL; 29844229Sdavidn SETPWENT(); 29944229Sdavidn while ((pwd = GETPWENT()) != NULL) 30044386Sdavidn print_user(pwd, pretty, v7); 30144229Sdavidn ENDPWENT(); 30220267Sjoerg return EXIT_SUCCESS; 30320253Sjoerg } 30452527Sdavidn 30520253Sjoerg if ((a_name = getarg(args, 'n')) != NULL) 30644229Sdavidn pwd = GETPWNAM(pw_checkname((u_char *)a_name->val, 0)); 30720253Sjoerg a_uid = getarg(args, 'u'); 30820253Sjoerg 30920253Sjoerg if (a_uid == NULL) { 31020253Sjoerg if (a_name == NULL) 31130259Scharnier errx(EX_DATAERR, "user name or id required"); 31220253Sjoerg 31320253Sjoerg /* 31420253Sjoerg * Determine whether 'n' switch is name or uid - we don't 31520253Sjoerg * really don't really care which we have, but we need to 31620253Sjoerg * know. 31720253Sjoerg */ 31843780Sdes if (mode != M_ADD && pwd == NULL 319241108Sbapt && strspn(a_name->val, "0123456789") == strlen(a_name->val) 320241108Sbapt && *a_name->val) { 32120253Sjoerg (a_uid = a_name)->ch = 'u'; 32220253Sjoerg a_name = NULL; 32320253Sjoerg } 32420253Sjoerg } 32552527Sdavidn 32620253Sjoerg /* 32720253Sjoerg * Update, delete & print require that the user exists 32820253Sjoerg */ 32952512Sdavidn if (mode == M_UPDATE || mode == M_DELETE || 33052512Sdavidn mode == M_PRINT || mode == M_LOCK || mode == M_UNLOCK) { 33152527Sdavidn 33220253Sjoerg if (a_name == NULL && pwd == NULL) /* Try harder */ 33344229Sdavidn pwd = GETPWUID(atoi(a_uid->val)); 33420253Sjoerg 33520253Sjoerg if (pwd == NULL) { 33620253Sjoerg if (mode == M_PRINT && getarg(args, 'F')) { 33720253Sjoerg fakeuser.pw_name = a_name ? a_name->val : "nouser"; 33820253Sjoerg fakeuser.pw_uid = a_uid ? (uid_t) atol(a_uid->val) : -1; 33944386Sdavidn return print_user(&fakeuser, 34044386Sdavidn getarg(args, 'P') != NULL, 34144386Sdavidn getarg(args, '7') != NULL); 34220253Sjoerg } 34320253Sjoerg if (a_name == NULL) 34430259Scharnier errx(EX_NOUSER, "no such uid `%s'", a_uid->val); 34530259Scharnier errx(EX_NOUSER, "no such user `%s'", a_name->val); 34620253Sjoerg } 34752527Sdavidn 34820253Sjoerg if (a_name == NULL) /* May be needed later */ 34920253Sjoerg a_name = addarg(args, 'n', newstr(pwd->pw_name)); 35020253Sjoerg 35120253Sjoerg /* 35252512Sdavidn * The M_LOCK and M_UNLOCK functions simply add or remove 35352512Sdavidn * a "*LOCKED*" prefix from in front of the password to 35452512Sdavidn * prevent it decoding correctly, and therefore prevents 35552512Sdavidn * access. Of course, this only prevents access via 35652512Sdavidn * password authentication (not ssh, kerberos or any 35752512Sdavidn * other method that does not use the UNIX password) but 35852512Sdavidn * that is a known limitation. 35952512Sdavidn */ 36052512Sdavidn 36152512Sdavidn if (mode == M_LOCK) { 36252512Sdavidn if (strncmp(pwd->pw_passwd, locked_str, sizeof(locked_str)-1) == 0) 36352512Sdavidn errx(EX_DATAERR, "user '%s' is already locked", pwd->pw_name); 36452512Sdavidn passtmp = malloc(strlen(pwd->pw_passwd) + sizeof(locked_str)); 36552512Sdavidn if (passtmp == NULL) /* disaster */ 36652512Sdavidn errx(EX_UNAVAILABLE, "out of memory"); 36752512Sdavidn strcpy(passtmp, locked_str); 36852512Sdavidn strcat(passtmp, pwd->pw_passwd); 36952512Sdavidn pwd->pw_passwd = passtmp; 37052527Sdavidn edited = 1; 37152512Sdavidn } else if (mode == M_UNLOCK) { 37252512Sdavidn if (strncmp(pwd->pw_passwd, locked_str, sizeof(locked_str)-1) != 0) 37352512Sdavidn errx(EX_DATAERR, "user '%s' is not locked", pwd->pw_name); 37452512Sdavidn pwd->pw_passwd += sizeof(locked_str)-1; 37552527Sdavidn edited = 1; 37652527Sdavidn } else if (mode == M_DELETE) { 37752527Sdavidn /* 37852527Sdavidn * Handle deletions now 37952527Sdavidn */ 38020253Sjoerg char file[MAXPATHLEN]; 38120253Sjoerg char home[MAXPATHLEN]; 38220253Sjoerg uid_t uid = pwd->pw_uid; 38320253Sjoerg 38420253Sjoerg if (strcmp(pwd->pw_name, "root") == 0) 38530259Scharnier errx(EX_DATAERR, "cannot remove user 'root'"); 38620253Sjoerg 38744229Sdavidn if (!PWALTDIR()) { 38844229Sdavidn /* 38985145Sache * Remove opie record from /etc/opiekeys 39044229Sdavidn */ 39120747Sdavidn 39285145Sache rmopie(pwd->pw_name); 39320747Sdavidn 39444229Sdavidn /* 39544229Sdavidn * Remove crontabs 39644229Sdavidn */ 397243895Seadler snprintf(file, sizeof(file), "/var/cron/tabs/%s", pwd->pw_name); 39844229Sdavidn if (access(file, F_OK) == 0) { 39944229Sdavidn sprintf(file, "crontab -u %s -r", pwd->pw_name); 40044229Sdavidn system(file); 40144229Sdavidn } 40220253Sjoerg } 40320253Sjoerg /* 40420253Sjoerg * Save these for later, since contents of pwd may be 40520253Sjoerg * invalidated by deletion 40620253Sjoerg */ 40720253Sjoerg sprintf(file, "%s/%s", _PATH_MAILDIR, pwd->pw_name); 408130633Srobert strlcpy(home, pwd->pw_dir, sizeof(home)); 40920253Sjoerg 41052502Sdavidn rc = delpwent(pwd); 41152502Sdavidn if (rc == -1) 41252502Sdavidn err(EX_IOERR, "user '%s' does not exist", pwd->pw_name); 41352502Sdavidn else if (rc != 0) { 41456000Sdavidn warn("passwd update"); 41552502Sdavidn return EX_IOERR; 41652502Sdavidn } 41721330Sdavidn 41852502Sdavidn if (cnf->nispasswd && *cnf->nispasswd=='/') { 41952502Sdavidn rc = delnispwent(cnf->nispasswd, a_name->val); 42052502Sdavidn if (rc == -1) 42152502Sdavidn warnx("WARNING: user '%s' does not exist in NIS passwd", pwd->pw_name); 42252502Sdavidn else if (rc != 0) 42356000Sdavidn warn("WARNING: NIS passwd update"); 42452502Sdavidn /* non-fatal */ 42552502Sdavidn } 42652502Sdavidn 427242349Sbapt grp = GETGRNAM(a_name->val); 428262865Sjulian if (grp != NULL && 429262865Sjulian (grp->gr_mem == NULL || *grp->gr_mem == NULL)) 430242349Sbapt delgrent(GETGRNAM(a_name->val)); 431242349Sbapt SETGRENT(); 432242349Sbapt while ((grp = GETGRENT()) != NULL) { 433242349Sbapt int i; 434242349Sbapt char group[MAXLOGNAME]; 435262865Sjulian if (grp->gr_mem != NULL) { 436262865Sjulian for (i = 0; grp->gr_mem[i] != NULL; i++) { 437262865Sjulian if (!strcmp(grp->gr_mem[i], a_name->val)) { 438262865Sjulian while (grp->gr_mem[i] != NULL) { 439262865Sjulian grp->gr_mem[i] = grp->gr_mem[i+1]; 440262865Sjulian } 441262865Sjulian strlcpy(group, grp->gr_name, MAXLOGNAME); 442262865Sjulian chggrent(group, grp); 443262865Sjulian } 444242349Sbapt } 445242349Sbapt } 446242349Sbapt } 447242349Sbapt ENDGRENT(); 44820253Sjoerg 44920253Sjoerg pw_log(cnf, mode, W_USER, "%s(%ld) account removed", a_name->val, (long) uid); 45020253Sjoerg 45144229Sdavidn if (!PWALTDIR()) { 45244229Sdavidn /* 45344229Sdavidn * Remove mail file 45444229Sdavidn */ 45544229Sdavidn remove(file); 45620253Sjoerg 45744229Sdavidn /* 45844229Sdavidn * Remove at jobs 45944229Sdavidn */ 46044229Sdavidn if (getpwuid(uid) == NULL) 46144229Sdavidn rmat(uid); 46220253Sjoerg 46344229Sdavidn /* 46444229Sdavidn * Remove home directory and contents 46544229Sdavidn */ 46644229Sdavidn if (getarg(args, 'r') != NULL && *home == '/' && getpwuid(uid) == NULL) { 46744229Sdavidn if (stat(home, &st) != -1) { 46844229Sdavidn rm_r(home, uid); 46944229Sdavidn pw_log(cnf, mode, W_USER, "%s(%ld) home '%s' %sremoved", 47044229Sdavidn a_name->val, (long) uid, home, 47144229Sdavidn stat(home, &st) == -1 ? "" : "not completely "); 47244229Sdavidn } 47320253Sjoerg } 47420253Sjoerg } 47520267Sjoerg return EXIT_SUCCESS; 47620253Sjoerg } else if (mode == M_PRINT) 47744386Sdavidn return print_user(pwd, 47844386Sdavidn getarg(args, 'P') != NULL, 47944386Sdavidn getarg(args, '7') != NULL); 48020253Sjoerg 48120253Sjoerg /* 48220253Sjoerg * The rest is edit code 48320253Sjoerg */ 48420253Sjoerg if ((arg = getarg(args, 'l')) != NULL) { 48520253Sjoerg if (strcmp(pwd->pw_name, "root") == 0) 48630259Scharnier errx(EX_DATAERR, "can't rename `root' account"); 48720679Sdavidn pwd->pw_name = pw_checkname((u_char *)arg->val, 0); 48852527Sdavidn edited = 1; 48920253Sjoerg } 49052527Sdavidn 49161957Sache if ((arg = getarg(args, 'u')) != NULL && isdigit((unsigned char)*arg->val)) { 49220253Sjoerg pwd->pw_uid = (uid_t) atol(arg->val); 49352527Sdavidn edited = 1; 49420253Sjoerg if (pwd->pw_uid != 0 && strcmp(pwd->pw_name, "root") == 0) 49530259Scharnier errx(EX_DATAERR, "can't change uid of `root' account"); 49620253Sjoerg if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0) 49730259Scharnier warnx("WARNING: account `%s' will have a uid of 0 (superuser access!)", pwd->pw_name); 49820253Sjoerg } 49920253Sjoerg 50052527Sdavidn if ((arg = getarg(args, 'g')) != NULL && pwd->pw_uid != 0) { /* Already checked this */ 50152527Sdavidn gid_t newgid = (gid_t) GETGRNAM(cnf->default_group)->gr_gid; 50252527Sdavidn if (newgid != pwd->pw_gid) { 50352527Sdavidn edited = 1; 50461762Sdavidn pwd->pw_gid = newgid; 50552527Sdavidn } 50652527Sdavidn } 50752527Sdavidn 50820253Sjoerg if ((arg = getarg(args, 'p')) != NULL) { 50952527Sdavidn if (*arg->val == '\0' || strcmp(arg->val, "0") == 0) { 51052527Sdavidn if (pwd->pw_change != 0) { 51152527Sdavidn pwd->pw_change = 0; 51252527Sdavidn edited = 1; 51352527Sdavidn } 51452527Sdavidn } 51520253Sjoerg else { 51620253Sjoerg time_t now = time(NULL); 51720253Sjoerg time_t expire = parse_date(now, arg->val); 51820253Sjoerg 51952527Sdavidn if (pwd->pw_change != expire) { 52052527Sdavidn pwd->pw_change = expire; 52152527Sdavidn edited = 1; 52252527Sdavidn } 52320253Sjoerg } 52420253Sjoerg } 52552527Sdavidn 52620267Sjoerg if ((arg = getarg(args, 'e')) != NULL) { 52752527Sdavidn if (*arg->val == '\0' || strcmp(arg->val, "0") == 0) { 52852527Sdavidn if (pwd->pw_expire != 0) { 52952527Sdavidn pwd->pw_expire = 0; 53052527Sdavidn edited = 1; 53152527Sdavidn } 53252527Sdavidn } 53320253Sjoerg else { 53420253Sjoerg time_t now = time(NULL); 53520253Sjoerg time_t expire = parse_date(now, arg->val); 53620253Sjoerg 53752527Sdavidn if (pwd->pw_expire != expire) { 53852527Sdavidn pwd->pw_expire = expire; 53952527Sdavidn edited = 1; 54052527Sdavidn } 54120253Sjoerg } 54220253Sjoerg } 54320253Sjoerg 54452527Sdavidn if ((arg = getarg(args, 's')) != NULL) { 54552527Sdavidn char *shell = shell_path(cnf->shelldir, cnf->shells, arg->val); 54652527Sdavidn if (shell == NULL) 54752527Sdavidn shell = ""; 54852527Sdavidn if (strcmp(shell, pwd->pw_shell) != 0) { 54952527Sdavidn pwd->pw_shell = shell; 55052527Sdavidn edited = 1; 55152527Sdavidn } 55252527Sdavidn } 55320253Sjoerg 55452527Sdavidn if (getarg(args, 'L')) { 55552527Sdavidn if (cnf->default_class == NULL) 55652527Sdavidn cnf->default_class = ""; 55752527Sdavidn if (strcmp(pwd->pw_class, cnf->default_class) != 0) { 55852527Sdavidn pwd->pw_class = cnf->default_class; 55952527Sdavidn edited = 1; 56052527Sdavidn } 56152527Sdavidn } 56252527Sdavidn 56320747Sdavidn if ((arg = getarg(args, 'd')) != NULL) { 564130629Srobert if (strcmp(pwd->pw_dir, arg->val)) 565130629Srobert edited = 1; 56620747Sdavidn if (stat(pwd->pw_dir = arg->val, &st) == -1) { 56720747Sdavidn if (getarg(args, 'm') == NULL && strcmp(pwd->pw_dir, "/nonexistent") != 0) 56830259Scharnier warnx("WARNING: home `%s' does not exist", pwd->pw_dir); 56920747Sdavidn } else if (!S_ISDIR(st.st_mode)) 57030259Scharnier warnx("WARNING: home `%s' is not a directory", pwd->pw_dir); 57120747Sdavidn } 57220747Sdavidn 573124382Siedowse if ((arg = getarg(args, 'w')) != NULL && 574124382Siedowse getarg(args, 'h') == NULL && getarg(args, 'H') == NULL) { 57564918Sgreen login_cap_t *lc; 57664918Sgreen 57764918Sgreen lc = login_getpwclass(pwd); 57864918Sgreen if (lc == NULL || 579252688Sdes login_setcryptfmt(lc, "sha512", NULL) == NULL) 58064918Sgreen warn("setting crypt(3) format"); 58164918Sgreen login_close(lc); 58220267Sjoerg pwd->pw_passwd = pw_password(cnf, args, pwd->pw_name); 58352527Sdavidn edited = 1; 58452527Sdavidn } 58520267Sjoerg 58620253Sjoerg } else { 58764918Sgreen login_cap_t *lc; 58852527Sdavidn 58952527Sdavidn /* 59052527Sdavidn * Add code 59152527Sdavidn */ 59252527Sdavidn 59320253Sjoerg if (a_name == NULL) /* Required */ 59430259Scharnier errx(EX_DATAERR, "login name required"); 59544229Sdavidn else if ((pwd = GETPWNAM(a_name->val)) != NULL) /* Exists */ 59630259Scharnier errx(EX_DATAERR, "login name `%s' already exists", a_name->val); 59720253Sjoerg 59820253Sjoerg /* 59920253Sjoerg * Now, set up defaults for a new user 60020253Sjoerg */ 60120253Sjoerg pwd = &fakeuser; 60220253Sjoerg pwd->pw_name = a_name->val; 60320253Sjoerg pwd->pw_class = cnf->default_class ? cnf->default_class : ""; 60420253Sjoerg pwd->pw_uid = pw_uidpolicy(cnf, args); 60520253Sjoerg pwd->pw_gid = pw_gidpolicy(cnf, args, pwd->pw_name, (gid_t) pwd->pw_uid); 60620253Sjoerg pwd->pw_change = pw_pwdpolicy(cnf, args); 60720253Sjoerg pwd->pw_expire = pw_exppolicy(cnf, args); 60820253Sjoerg pwd->pw_dir = pw_homepolicy(cnf, args, pwd->pw_name); 60920253Sjoerg pwd->pw_shell = pw_shellpolicy(cnf, args, NULL); 61064918Sgreen lc = login_getpwclass(pwd); 61164918Sgreen if (lc == NULL || login_setcryptfmt(lc, "md5", NULL) == NULL) 61264918Sgreen warn("setting crypt(3) format"); 61364918Sgreen login_close(lc); 61464918Sgreen pwd->pw_passwd = pw_password(cnf, args, pwd->pw_name); 61552527Sdavidn edited = 1; 61620253Sjoerg 61720253Sjoerg if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0) 61830259Scharnier warnx("WARNING: new account `%s' has a uid of 0 (superuser access!)", pwd->pw_name); 61920253Sjoerg } 62020253Sjoerg 62120253Sjoerg /* 62220253Sjoerg * Shared add/edit code 62320253Sjoerg */ 62452527Sdavidn if ((arg = getarg(args, 'c')) != NULL) { 62552527Sdavidn char *gecos = pw_checkname((u_char *)arg->val, 1); 62652527Sdavidn if (strcmp(pwd->pw_gecos, gecos) != 0) { 62752527Sdavidn pwd->pw_gecos = gecos; 62852527Sdavidn edited = 1; 62952527Sdavidn } 63052527Sdavidn } 63120253Sjoerg 632124382Siedowse if ((arg = getarg(args, 'h')) != NULL || 633124382Siedowse (arg = getarg(args, 'H')) != NULL) { 63463572Sdavidn if (strcmp(arg->val, "-") == 0) { 63563572Sdavidn if (!pwd->pw_passwd || *pwd->pw_passwd != '*') { 63663572Sdavidn pwd->pw_passwd = "*"; /* No access */ 63763572Sdavidn edited = 1; 63863572Sdavidn } 63963572Sdavidn } else { 64020253Sjoerg int fd = atoi(arg->val); 641124382Siedowse int precrypt = (arg->ch == 'H'); 64220253Sjoerg int b; 64320253Sjoerg int istty = isatty(fd); 64420253Sjoerg struct termios t; 64564918Sgreen login_cap_t *lc; 64620253Sjoerg 64720253Sjoerg if (istty) { 64820253Sjoerg if (tcgetattr(fd, &t) == -1) 64920253Sjoerg istty = 0; 65020253Sjoerg else { 65120253Sjoerg struct termios n = t; 65220253Sjoerg 65320253Sjoerg /* Disable echo */ 65420253Sjoerg n.c_lflag &= ~(ECHO); 65520253Sjoerg tcsetattr(fd, TCSANOW, &n); 656124382Siedowse printf("%s%spassword for user %s:", 657124382Siedowse (mode == M_UPDATE) ? "new " : "", 658124382Siedowse precrypt ? "encrypted " : "", 659124382Siedowse pwd->pw_name); 66020253Sjoerg fflush(stdout); 66120253Sjoerg } 66220253Sjoerg } 66320253Sjoerg b = read(fd, line, sizeof(line) - 1); 66420253Sjoerg if (istty) { /* Restore state */ 66520253Sjoerg tcsetattr(fd, TCSANOW, &t); 66620253Sjoerg fputc('\n', stdout); 66720253Sjoerg fflush(stdout); 66820253Sjoerg } 66920253Sjoerg if (b < 0) { 670124382Siedowse warn("-%c file descriptor", precrypt ? 'H' : 671124382Siedowse 'h'); 67220267Sjoerg return EX_IOERR; 67320253Sjoerg } 67420253Sjoerg line[b] = '\0'; 675168045Sle if ((p = strpbrk(line, "\r\n")) != NULL) 67620253Sjoerg *p = '\0'; 67720253Sjoerg if (!*line) 67830259Scharnier errx(EX_DATAERR, "empty password read on file descriptor %d", fd); 679124382Siedowse if (precrypt) { 680124382Siedowse if (strchr(line, ':') != NULL) 681124382Siedowse return EX_DATAERR; 682124382Siedowse pwd->pw_passwd = line; 683124382Siedowse } else { 684124382Siedowse lc = login_getpwclass(pwd); 685124382Siedowse if (lc == NULL || 686124382Siedowse login_setcryptfmt(lc, "md5", NULL) == NULL) 687124382Siedowse warn("setting crypt(3) format"); 688124382Siedowse login_close(lc); 689124382Siedowse pwd->pw_passwd = pw_pwcrypt(line); 690124382Siedowse } 69152527Sdavidn edited = 1; 69220253Sjoerg } 69320253Sjoerg } 69420267Sjoerg 69520267Sjoerg /* 69620267Sjoerg * Special case: -N only displays & exits 69720267Sjoerg */ 69820267Sjoerg if (getarg(args, 'N') != NULL) 69944386Sdavidn return print_user(pwd, 70044386Sdavidn getarg(args, 'P') != NULL, 70144386Sdavidn getarg(args, '7') != NULL); 70220267Sjoerg 70321330Sdavidn if (mode == M_ADD) { 70452527Sdavidn edited = 1; /* Always */ 70552502Sdavidn rc = addpwent(pwd); 70652502Sdavidn if (rc == -1) { 70752502Sdavidn warnx("user '%s' already exists", pwd->pw_name); 70852502Sdavidn return EX_IOERR; 70952502Sdavidn } else if (rc != 0) { 71056000Sdavidn warn("passwd file update"); 71152502Sdavidn return EX_IOERR; 71252502Sdavidn } 71352502Sdavidn if (cnf->nispasswd && *cnf->nispasswd=='/') { 71452502Sdavidn rc = addnispwent(cnf->nispasswd, pwd); 71552502Sdavidn if (rc == -1) 71652502Sdavidn warnx("User '%s' already exists in NIS passwd", pwd->pw_name); 71752502Sdavidn else 71856000Sdavidn warn("NIS passwd update"); 71952502Sdavidn /* NOTE: we treat NIS-only update errors as non-fatal */ 72052502Sdavidn } 72152512Sdavidn } else if (mode == M_UPDATE || mode == M_LOCK || mode == M_UNLOCK) { 72252527Sdavidn if (edited) { /* Only updated this if required */ 72352527Sdavidn rc = chgpwent(a_name->val, pwd); 72452527Sdavidn if (rc == -1) { 72552527Sdavidn warnx("user '%s' does not exist (NIS?)", pwd->pw_name); 72652527Sdavidn return EX_IOERR; 72752527Sdavidn } else if (rc != 0) { 72856000Sdavidn warn("passwd file update"); 72952527Sdavidn return EX_IOERR; 73052527Sdavidn } 73152527Sdavidn if ( cnf->nispasswd && *cnf->nispasswd=='/') { 73252527Sdavidn rc = chgnispwent(cnf->nispasswd, a_name->val, pwd); 73352527Sdavidn if (rc == -1) 73452527Sdavidn warn("User '%s' not found in NIS passwd", pwd->pw_name); 73552527Sdavidn else 73656000Sdavidn warn("NIS passwd update"); 73752527Sdavidn /* NOTE: NIS-only update errors are not fatal */ 73852527Sdavidn } 73952502Sdavidn } 74021330Sdavidn } 74121330Sdavidn 74220253Sjoerg /* 74320253Sjoerg * Ok, user is created or changed - now edit group file 74420253Sjoerg */ 74520253Sjoerg 746242349Sbapt if (mode == M_ADD || getarg(args, 'G') != NULL) { 747244737Sbapt int i; 748242349Sbapt for (i = 0; cnf->groups[i] != NULL; i++) { 749242349Sbapt grp = GETGRNAM(cnf->groups[i]); 750244737Sbapt grp = gr_add(grp, pwd->pw_name); 751244737Sbapt /* 752244737Sbapt * grp can only be NULL in 2 cases: 753244737Sbapt * - the new member is already a member 754244737Sbapt * - a problem with memory occurs 755244737Sbapt * in both cases we want to skip now. 756244737Sbapt */ 757244737Sbapt if (grp == NULL) 758242349Sbapt continue; 759242349Sbapt chggrent(cnf->groups[i], grp); 760245114Smjg free(grp); 761242349Sbapt } 762242349Sbapt } 763242349Sbapt 764242349Sbapt 76561759Sdavidn /* go get a current version of pwd */ 76661759Sdavidn pwd = GETPWNAM(a_name->val); 76761759Sdavidn if (pwd == NULL) { 76861759Sdavidn /* This will fail when we rename, so special case that */ 76961759Sdavidn if (mode == M_UPDATE && (arg = getarg(args, 'l')) != NULL) { 77061759Sdavidn a_name->val = arg->val; /* update new name */ 77161759Sdavidn pwd = GETPWNAM(a_name->val); /* refetch renamed rec */ 77261759Sdavidn } 77361759Sdavidn } 77461759Sdavidn if (pwd == NULL) /* can't go on without this */ 77530259Scharnier errx(EX_NOUSER, "user '%s' disappeared during update", a_name->val); 77620253Sjoerg 77744229Sdavidn grp = GETGRGID(pwd->pw_gid); 77898744Sdwmalone pw_log(cnf, mode, W_USER, "%s(%ld):%s(%ld):%s:%s:%s", 77920253Sjoerg pwd->pw_name, (long) pwd->pw_uid, 78020253Sjoerg grp ? grp->gr_name : "unknown", (long) (grp ? grp->gr_gid : -1), 78120253Sjoerg pwd->pw_gecos, pwd->pw_dir, pwd->pw_shell); 78220253Sjoerg 78320253Sjoerg /* 78420253Sjoerg * If adding, let's touch and chown the user's mail file. This is not 78520253Sjoerg * strictly necessary under BSD with a 0755 maildir but it also 78620253Sjoerg * doesn't hurt anything to create the empty mailfile 78720253Sjoerg */ 78820253Sjoerg if (mode == M_ADD) { 78944229Sdavidn if (!PWALTDIR()) { 79044229Sdavidn sprintf(line, "%s/%s", _PATH_MAILDIR, pwd->pw_name); 79144229Sdavidn close(open(line, O_RDWR | O_CREAT, 0600)); /* Preserve contents & 79244229Sdavidn * mtime */ 79344229Sdavidn chown(line, pwd->pw_uid, pwd->pw_gid); 79420253Sjoerg } 79520253Sjoerg } 79652527Sdavidn 79720253Sjoerg /* 79882868Sdd * Let's create and populate the user's home directory. Note 79920253Sjoerg * that this also `works' for editing users if -m is used, but 80020253Sjoerg * existing files will *not* be overwritten. 80120253Sjoerg */ 80244229Sdavidn if (!PWALTDIR() && getarg(args, 'm') != NULL && pwd->pw_dir && *pwd->pw_dir == '/' && pwd->pw_dir[1]) { 803168044Sle copymkdir(pwd->pw_dir, cnf->dotdir, cnf->homemode, pwd->pw_uid, pwd->pw_gid); 80420253Sjoerg pw_log(cnf, mode, W_USER, "%s(%ld) home %s made", 80520253Sjoerg pwd->pw_name, (long) pwd->pw_uid, pwd->pw_dir); 80620253Sjoerg } 80752527Sdavidn 80882868Sdd 80982868Sdd /* 81082868Sdd * Finally, send mail to the new user as well, if we are asked to 81182868Sdd */ 81282868Sdd if (mode == M_ADD && !PWALTDIR() && cnf->newmail && *cnf->newmail && (fp = fopen(cnf->newmail, "r")) != NULL) { 81382868Sdd FILE *pfp = popen(_PATH_SENDMAIL " -t", "w"); 81482868Sdd 81582868Sdd if (pfp == NULL) 81682868Sdd warn("sendmail"); 81782868Sdd else { 81882868Sdd fprintf(pfp, "From: root\n" "To: %s\n" "Subject: Welcome!\n\n", pwd->pw_name); 81982868Sdd while (fgets(line, sizeof(line), fp) != NULL) { 82082868Sdd /* Do substitutions? */ 82182868Sdd fputs(line, pfp); 82282868Sdd } 82382868Sdd pclose(pfp); 82482868Sdd pw_log(cnf, mode, W_USER, "%s(%ld) new user mail sent", 82582868Sdd pwd->pw_name, (long) pwd->pw_uid); 82682868Sdd } 82782868Sdd fclose(fp); 82882868Sdd } 82982868Sdd 83020267Sjoerg return EXIT_SUCCESS; 83120253Sjoerg} 83220253Sjoerg 83320253Sjoerg 83420253Sjoergstatic uid_t 83520253Sjoergpw_uidpolicy(struct userconf * cnf, struct cargs * args) 83620253Sjoerg{ 83720253Sjoerg struct passwd *pwd; 83820253Sjoerg uid_t uid = (uid_t) - 1; 83920253Sjoerg struct carg *a_uid = getarg(args, 'u'); 84020253Sjoerg 84120253Sjoerg /* 84220253Sjoerg * Check the given uid, if any 84320253Sjoerg */ 84420253Sjoerg if (a_uid != NULL) { 84520253Sjoerg uid = (uid_t) atol(a_uid->val); 84620253Sjoerg 84744229Sdavidn if ((pwd = GETPWUID(uid)) != NULL && getarg(args, 'o') == NULL) 84830259Scharnier errx(EX_DATAERR, "uid `%ld' has already been allocated", (long) pwd->pw_uid); 84920253Sjoerg } else { 85020253Sjoerg struct bitmap bm; 85120253Sjoerg 85220253Sjoerg /* 85320253Sjoerg * We need to allocate the next available uid under one of 85420253Sjoerg * two policies a) Grab the first unused uid b) Grab the 85520253Sjoerg * highest possible unused uid 85620253Sjoerg */ 85720253Sjoerg if (cnf->min_uid >= cnf->max_uid) { /* Sanity 85820253Sjoerg * claus^H^H^H^Hheck */ 85920253Sjoerg cnf->min_uid = 1000; 86020253Sjoerg cnf->max_uid = 32000; 86120253Sjoerg } 86220253Sjoerg bm = bm_alloc(cnf->max_uid - cnf->min_uid + 1); 86320253Sjoerg 86420253Sjoerg /* 86520253Sjoerg * Now, let's fill the bitmap from the password file 86620253Sjoerg */ 86744229Sdavidn SETPWENT(); 86844229Sdavidn while ((pwd = GETPWENT()) != NULL) 86944229Sdavidn if (pwd->pw_uid >= (uid_t) cnf->min_uid && pwd->pw_uid <= (uid_t) cnf->max_uid) 87020253Sjoerg bm_setbit(&bm, pwd->pw_uid - cnf->min_uid); 87144229Sdavidn ENDPWENT(); 87220253Sjoerg 87320253Sjoerg /* 87420253Sjoerg * Then apply the policy, with fallback to reuse if necessary 87520253Sjoerg */ 87620253Sjoerg if (cnf->reuse_uids || (uid = (uid_t) (bm_lastset(&bm) + cnf->min_uid + 1)) > cnf->max_uid) 87720253Sjoerg uid = (uid_t) (bm_firstunset(&bm) + cnf->min_uid); 87820253Sjoerg 87920253Sjoerg /* 88020253Sjoerg * Another sanity check 88120253Sjoerg */ 88220253Sjoerg if (uid < cnf->min_uid || uid > cnf->max_uid) 88330259Scharnier errx(EX_SOFTWARE, "unable to allocate a new uid - range fully used"); 88420253Sjoerg bm_dealloc(&bm); 88520253Sjoerg } 88620253Sjoerg return uid; 88720253Sjoerg} 88820253Sjoerg 88920253Sjoerg 89020253Sjoergstatic uid_t 89120253Sjoergpw_gidpolicy(struct userconf * cnf, struct cargs * args, char *nam, gid_t prefer) 89220253Sjoerg{ 89320253Sjoerg struct group *grp; 89420253Sjoerg gid_t gid = (uid_t) - 1; 89520253Sjoerg struct carg *a_gid = getarg(args, 'g'); 89620253Sjoerg 89720253Sjoerg /* 89820253Sjoerg * If no arg given, see if default can help out 89920253Sjoerg */ 90020253Sjoerg if (a_gid == NULL && cnf->default_group && *cnf->default_group) 90120253Sjoerg a_gid = addarg(args, 'g', cnf->default_group); 90220253Sjoerg 90320253Sjoerg /* 90420253Sjoerg * Check the given gid, if any 90520253Sjoerg */ 90644229Sdavidn SETGRENT(); 90720253Sjoerg if (a_gid != NULL) { 90844229Sdavidn if ((grp = GETGRNAM(a_gid->val)) == NULL) { 90920253Sjoerg gid = (gid_t) atol(a_gid->val); 91061957Sache if ((gid == 0 && !isdigit((unsigned char)*a_gid->val)) || (grp = GETGRGID(gid)) == NULL) 91130259Scharnier errx(EX_NOUSER, "group `%s' is not defined", a_gid->val); 91220253Sjoerg } 91320253Sjoerg gid = grp->gr_gid; 914262865Sjulian } else if ((grp = GETGRNAM(nam)) != NULL && 915262865Sjulian (grp->gr_mem == NULL || grp->gr_mem[0] == NULL)) { 91620267Sjoerg gid = grp->gr_gid; /* Already created? Use it anyway... */ 91720253Sjoerg } else { 91820253Sjoerg struct cargs grpargs; 91920253Sjoerg char tmp[32]; 92020253Sjoerg 92120253Sjoerg LIST_INIT(&grpargs); 92220253Sjoerg addarg(&grpargs, 'n', nam); 92320253Sjoerg 92420253Sjoerg /* 92520253Sjoerg * We need to auto-create a group with the user's name. We 92620253Sjoerg * can send all the appropriate output to our sister routine 92720253Sjoerg * bit first see if we can create a group with gid==uid so we 92820253Sjoerg * can keep the user and group ids in sync. We purposely do 92920253Sjoerg * NOT check the gid range if we can force the sync. If the 93020253Sjoerg * user's name dups an existing group, then the group add 93120253Sjoerg * function will happily handle that case for us and exit. 93220253Sjoerg */ 93344229Sdavidn if (GETGRGID(prefer) == NULL) { 93420253Sjoerg sprintf(tmp, "%lu", (unsigned long) prefer); 93520253Sjoerg addarg(&grpargs, 'g', tmp); 93620253Sjoerg } 93720267Sjoerg if (getarg(args, 'N')) 93820267Sjoerg { 93920267Sjoerg addarg(&grpargs, 'N', NULL); 94020267Sjoerg addarg(&grpargs, 'q', NULL); 94120267Sjoerg gid = pw_group(cnf, M_NEXT, &grpargs); 94220267Sjoerg } 94320267Sjoerg else 94420267Sjoerg { 94520267Sjoerg pw_group(cnf, M_ADD, &grpargs); 94644229Sdavidn if ((grp = GETGRNAM(nam)) != NULL) 94720267Sjoerg gid = grp->gr_gid; 94820267Sjoerg } 94970486Sben a_gid = LIST_FIRST(&grpargs); 95020253Sjoerg while (a_gid != NULL) { 95170486Sben struct carg *t = LIST_NEXT(a_gid, list); 95220253Sjoerg LIST_REMOVE(a_gid, list); 95320253Sjoerg a_gid = t; 95420253Sjoerg } 95520253Sjoerg } 95644229Sdavidn ENDGRENT(); 95720253Sjoerg return gid; 95820253Sjoerg} 95920253Sjoerg 96020253Sjoerg 96120253Sjoergstatic time_t 96220253Sjoergpw_pwdpolicy(struct userconf * cnf, struct cargs * args) 96320253Sjoerg{ 96420253Sjoerg time_t result = 0; 96520253Sjoerg time_t now = time(NULL); 96627831Sdavidn struct carg *arg = getarg(args, 'p'); 96720253Sjoerg 96820253Sjoerg if (arg != NULL) { 96920253Sjoerg if ((result = parse_date(now, arg->val)) == now) 97030259Scharnier errx(EX_DATAERR, "invalid date/time `%s'", arg->val); 97120253Sjoerg } else if (cnf->password_days > 0) 97220253Sjoerg result = now + ((long) cnf->password_days * 86400L); 97320253Sjoerg return result; 97420253Sjoerg} 97520253Sjoerg 97620253Sjoerg 97720253Sjoergstatic time_t 97820253Sjoergpw_exppolicy(struct userconf * cnf, struct cargs * args) 97920253Sjoerg{ 98020253Sjoerg time_t result = 0; 98120253Sjoerg time_t now = time(NULL); 98220253Sjoerg struct carg *arg = getarg(args, 'e'); 98320253Sjoerg 98420253Sjoerg if (arg != NULL) { 98520253Sjoerg if ((result = parse_date(now, arg->val)) == now) 98630259Scharnier errx(EX_DATAERR, "invalid date/time `%s'", arg->val); 98720253Sjoerg } else if (cnf->expire_days > 0) 98820253Sjoerg result = now + ((long) cnf->expire_days * 86400L); 98920253Sjoerg return result; 99020253Sjoerg} 99120253Sjoerg 99220253Sjoerg 99320253Sjoergstatic char * 99420253Sjoergpw_homepolicy(struct userconf * cnf, struct cargs * args, char const * user) 99520253Sjoerg{ 99620253Sjoerg struct carg *arg = getarg(args, 'd'); 99720253Sjoerg 99820253Sjoerg if (arg) 99920253Sjoerg return arg->val; 100020253Sjoerg else { 100120253Sjoerg static char home[128]; 100220253Sjoerg 100320253Sjoerg if (cnf->home == NULL || *cnf->home == '\0') 100430259Scharnier errx(EX_CONFIG, "no base home directory set"); 100520253Sjoerg sprintf(home, "%s/%s", cnf->home, user); 100620253Sjoerg return home; 100720253Sjoerg } 100820253Sjoerg} 100920253Sjoerg 101020253Sjoergstatic char * 101120253Sjoergshell_path(char const * path, char *shells[], char *sh) 101220253Sjoerg{ 101320253Sjoerg if (sh != NULL && (*sh == '/' || *sh == '\0')) 101420253Sjoerg return sh; /* specified full path or forced none */ 101520253Sjoerg else { 101620253Sjoerg char *p; 101720253Sjoerg char paths[_UC_MAXLINE]; 101820253Sjoerg 101920253Sjoerg /* 102020253Sjoerg * We need to search paths 102120253Sjoerg */ 1022130633Srobert strlcpy(paths, path, sizeof(paths)); 102320253Sjoerg for (p = strtok(paths, ": \t\r\n"); p != NULL; p = strtok(NULL, ": \t\r\n")) { 102420253Sjoerg int i; 102520253Sjoerg static char shellpath[256]; 102620253Sjoerg 102720253Sjoerg if (sh != NULL) { 102820253Sjoerg sprintf(shellpath, "%s/%s", p, sh); 102920253Sjoerg if (access(shellpath, X_OK) == 0) 103020253Sjoerg return shellpath; 103120253Sjoerg } else 103220253Sjoerg for (i = 0; i < _UC_MAXSHELLS && shells[i] != NULL; i++) { 103320253Sjoerg sprintf(shellpath, "%s/%s", p, shells[i]); 103420253Sjoerg if (access(shellpath, X_OK) == 0) 103520253Sjoerg return shellpath; 103620253Sjoerg } 103720253Sjoerg } 103820253Sjoerg if (sh == NULL) 103930259Scharnier errx(EX_OSFILE, "can't find shell `%s' in shell paths", sh); 104030259Scharnier errx(EX_CONFIG, "no default shell available or defined"); 104120253Sjoerg return NULL; 104220253Sjoerg } 104320253Sjoerg} 104420253Sjoerg 104520253Sjoerg 104620253Sjoergstatic char * 104720253Sjoergpw_shellpolicy(struct userconf * cnf, struct cargs * args, char *newshell) 104820253Sjoerg{ 104920253Sjoerg char *sh = newshell; 105020253Sjoerg struct carg *arg = getarg(args, 's'); 105120253Sjoerg 105220253Sjoerg if (newshell == NULL && arg != NULL) 105320253Sjoerg sh = arg->val; 105420253Sjoerg return shell_path(cnf->shelldir, cnf->shells, sh ? sh : cnf->shell_default); 105520253Sjoerg} 105620253Sjoerg 1057179365Santoine#define SALTSIZE 32 105820253Sjoerg 1059179365Santoinestatic char const chars[] = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ./"; 1060179365Santoine 106120253Sjoergchar * 106220253Sjoergpw_pwcrypt(char *password) 106320253Sjoerg{ 106420253Sjoerg int i; 1065179365Santoine char salt[SALTSIZE + 1]; 1066231994Skevlo char *cryptpw; 106720253Sjoerg 106820253Sjoerg static char buf[256]; 106920253Sjoerg 107020253Sjoerg /* 107120253Sjoerg * Calculate a salt value 107220253Sjoerg */ 1073179365Santoine for (i = 0; i < SALTSIZE; i++) 1074181785Sache salt[i] = chars[arc4random_uniform(sizeof(chars) - 1)]; 1075179365Santoine salt[SALTSIZE] = '\0'; 107620253Sjoerg 1077231994Skevlo cryptpw = crypt(password, salt); 1078231994Skevlo if (cryptpw == NULL) 1079231994Skevlo errx(EX_CONFIG, "crypt(3) failure"); 1080231994Skevlo return strcpy(buf, cryptpw); 108120253Sjoerg} 108220253Sjoerg 108320590Sdavidn 108420253Sjoergstatic char * 108520253Sjoergpw_password(struct userconf * cnf, struct cargs * args, char const * user) 108620253Sjoerg{ 108720253Sjoerg int i, l; 108820253Sjoerg char pwbuf[32]; 108920253Sjoerg 109020253Sjoerg switch (cnf->default_password) { 109120253Sjoerg case -1: /* Random password */ 109273563Skris l = (arc4random() % 8 + 8); /* 8 - 16 chars */ 109320253Sjoerg for (i = 0; i < l; i++) 1094181785Sache pwbuf[i] = chars[arc4random_uniform(sizeof(chars)-1)]; 109520253Sjoerg pwbuf[i] = '\0'; 109620253Sjoerg 109720253Sjoerg /* 109820253Sjoerg * We give this information back to the user 109920253Sjoerg */ 1100124382Siedowse if (getarg(args, 'h') == NULL && getarg(args, 'H') == NULL && 1101124382Siedowse getarg(args, 'N') == NULL) { 110261957Sache if (isatty(STDOUT_FILENO)) 110320712Sdavidn printf("Password for '%s' is: ", user); 110420253Sjoerg printf("%s\n", pwbuf); 110520253Sjoerg fflush(stdout); 110620253Sjoerg } 110720253Sjoerg break; 110820253Sjoerg 110920253Sjoerg case -2: /* No password at all! */ 111020253Sjoerg return ""; 111120253Sjoerg 111220253Sjoerg case 0: /* No login - default */ 111320253Sjoerg default: 111420253Sjoerg return "*"; 111520253Sjoerg 111620253Sjoerg case 1: /* user's name */ 1117130633Srobert strlcpy(pwbuf, user, sizeof(pwbuf)); 111820253Sjoerg break; 111920253Sjoerg } 112020253Sjoerg return pw_pwcrypt(pwbuf); 112120253Sjoerg} 112220253Sjoerg 112320253Sjoerg 112420253Sjoergstatic int 112544386Sdavidnprint_user(struct passwd * pwd, int pretty, int v7) 112620253Sjoerg{ 112720253Sjoerg if (!pretty) { 1128242349Sbapt char *buf; 112920253Sjoerg 1130242349Sbapt if (!v7) 1131242349Sbapt pwd->pw_passwd = (pwd->pw_passwd == NULL) ? "" : "*"; 1132242349Sbapt 1133242349Sbapt buf = v7 ? pw_make_v7(pwd) : pw_make(pwd); 1134242349Sbapt printf("%s\n", buf); 1135242349Sbapt free(buf); 113620253Sjoerg } else { 113720267Sjoerg int j; 113820253Sjoerg char *p; 113944229Sdavidn struct group *grp = GETGRGID(pwd->pw_gid); 114020253Sjoerg char uname[60] = "User &", office[60] = "[None]", 114120253Sjoerg wphone[60] = "[None]", hphone[60] = "[None]"; 114220590Sdavidn char acexpire[32] = "[None]", pwexpire[32] = "[None]"; 114320590Sdavidn struct tm * tptr; 114420253Sjoerg 114520253Sjoerg if ((p = strtok(pwd->pw_gecos, ",")) != NULL) { 1146130633Srobert strlcpy(uname, p, sizeof(uname)); 114720253Sjoerg if ((p = strtok(NULL, ",")) != NULL) { 1148130633Srobert strlcpy(office, p, sizeof(office)); 114920253Sjoerg if ((p = strtok(NULL, ",")) != NULL) { 1150130633Srobert strlcpy(wphone, p, sizeof(wphone)); 115120253Sjoerg if ((p = strtok(NULL, "")) != NULL) { 1152130633Srobert strlcpy(hphone, p, 1153130633Srobert sizeof(hphone)); 115420253Sjoerg } 115520253Sjoerg } 115620253Sjoerg } 115720253Sjoerg } 115820253Sjoerg /* 115920253Sjoerg * Handle '&' in gecos field 116020253Sjoerg */ 116120253Sjoerg if ((p = strchr(uname, '&')) != NULL) { 116220253Sjoerg int l = strlen(pwd->pw_name); 116320253Sjoerg int m = strlen(p); 116420253Sjoerg 116520253Sjoerg memmove(p + l, p + 1, m); 116620253Sjoerg memmove(p, pwd->pw_name, l); 116761957Sache *p = (char) toupper((unsigned char)*p); 116820253Sjoerg } 116920590Sdavidn if (pwd->pw_expire > (time_t)0 && (tptr = localtime(&pwd->pw_expire)) != NULL) 117074569Sache strftime(acexpire, sizeof acexpire, "%c", tptr); 117161957Sache if (pwd->pw_change > (time_t)0 && (tptr = localtime(&pwd->pw_change)) != NULL) 117274569Sache strftime(pwexpire, sizeof pwexpire, "%c", tptr); 117322394Sdavidn printf("Login Name: %-15s #%-12ld Group: %-15s #%ld\n" 117420747Sdavidn " Full Name: %s\n" 117520747Sdavidn " Home: %-26.26s Class: %s\n" 117620747Sdavidn " Shell: %-26.26s Office: %s\n" 117720747Sdavidn "Work Phone: %-26.26s Home Phone: %s\n" 117820747Sdavidn "Acc Expire: %-26.26s Pwd Expire: %s\n", 117920253Sjoerg pwd->pw_name, (long) pwd->pw_uid, 118020253Sjoerg grp ? grp->gr_name : "(invalid)", (long) pwd->pw_gid, 118120253Sjoerg uname, pwd->pw_dir, pwd->pw_class, 118220590Sdavidn pwd->pw_shell, office, wphone, hphone, 118320590Sdavidn acexpire, pwexpire); 118444229Sdavidn SETGRENT(); 118520267Sjoerg j = 0; 118644229Sdavidn while ((grp=GETGRENT()) != NULL) 118720267Sjoerg { 118820267Sjoerg int i = 0; 1189262865Sjulian if (grp->gr_mem != NULL) { 1190262865Sjulian while (grp->gr_mem[i] != NULL) 119120267Sjoerg { 1192262865Sjulian if (strcmp(grp->gr_mem[i], pwd->pw_name)==0) 1193262865Sjulian { 1194262865Sjulian printf(j++ == 0 ? " Groups: %s" : ",%s", grp->gr_name); 1195262865Sjulian break; 1196262865Sjulian } 1197262865Sjulian ++i; 119820267Sjoerg } 119920267Sjoerg } 120020267Sjoerg } 120144229Sdavidn ENDGRENT(); 120261957Sache printf("%s", j ? "\n" : ""); 120320253Sjoerg } 120420267Sjoerg return EXIT_SUCCESS; 120520253Sjoerg} 120620253Sjoerg 120720679Sdavidnchar * 120820679Sdavidnpw_checkname(u_char *name, int gecos) 120920253Sjoerg{ 1210109961Sgad char showch[8]; 1211109961Sgad u_char const *badchars, *ch, *showtype; 1212109961Sgad int reject; 121320253Sjoerg 1214109961Sgad ch = name; 1215109961Sgad reject = 0; 1216109961Sgad if (gecos) { 1217109961Sgad /* See if the name is valid as a gecos (comment) field. */ 1218109961Sgad badchars = ":!@"; 1219109961Sgad showtype = "gecos field"; 1220109961Sgad } else { 1221109961Sgad /* See if the name is valid as a userid or group. */ 1222109961Sgad badchars = " ,\t:+&#%$^()!@~*?<>=|\\/\""; 1223109961Sgad showtype = "userid/group name"; 1224109961Sgad /* Userids and groups can not have a leading '-'. */ 1225109961Sgad if (*ch == '-') 1226109961Sgad reject = 1; 122720253Sjoerg } 1228109961Sgad if (!reject) { 1229109961Sgad while (*ch) { 1230109961Sgad if (strchr(badchars, *ch) != NULL || *ch < ' ' || 1231109961Sgad *ch == 127) { 1232109961Sgad reject = 1; 1233109961Sgad break; 1234109961Sgad } 1235109961Sgad /* 8-bit characters are only allowed in GECOS fields */ 1236109961Sgad if (!gecos && (*ch & 0x80)) { 1237109961Sgad reject = 1; 1238109961Sgad break; 1239109961Sgad } 1240109961Sgad ch++; 1241109961Sgad } 1242109961Sgad } 1243109961Sgad /* 1244109961Sgad * A `$' is allowed as the final character for userids and groups, 1245109961Sgad * mainly for the benefit of samba. 1246109961Sgad */ 1247109961Sgad if (reject && !gecos) { 1248109961Sgad if (*ch == '$' && *(ch + 1) == '\0') { 1249109961Sgad reject = 0; 1250109961Sgad ch++; 1251109961Sgad } 1252109961Sgad } 1253109961Sgad if (reject) { 1254109961Sgad snprintf(showch, sizeof(showch), (*ch >= ' ' && *ch < 127) 1255109961Sgad ? "`%c'" : "0x%02x", *ch); 1256228673Sdim errx(EX_DATAERR, "invalid character %s at position %td in %s", 1257109961Sgad showch, (ch - name), showtype); 1258109961Sgad } 1259109961Sgad if (!gecos && (ch - name) > LOGNAMESIZE) 1260109961Sgad errx(EX_DATAERR, "name too long `%s' (max is %d)", name, 1261109961Sgad LOGNAMESIZE); 126220679Sdavidn return (char *)name; 126320253Sjoerg} 126420253Sjoerg 126520253Sjoerg 126620253Sjoergstatic void 126720253Sjoergrmat(uid_t uid) 126820253Sjoerg{ 126920253Sjoerg DIR *d = opendir("/var/at/jobs"); 127020253Sjoerg 127120253Sjoerg if (d != NULL) { 127220253Sjoerg struct dirent *e; 127320253Sjoerg 127420253Sjoerg while ((e = readdir(d)) != NULL) { 127520253Sjoerg struct stat st; 127620253Sjoerg 127720253Sjoerg if (strncmp(e->d_name, ".lock", 5) != 0 && 127820253Sjoerg stat(e->d_name, &st) == 0 && 127920253Sjoerg !S_ISDIR(st.st_mode) && 128020253Sjoerg st.st_uid == uid) { 128120253Sjoerg char tmp[MAXPATHLEN]; 128220253Sjoerg 128320253Sjoerg sprintf(tmp, "/usr/bin/atrm %s", e->d_name); 128420253Sjoerg system(tmp); 128520253Sjoerg } 128620253Sjoerg } 128720253Sjoerg closedir(d); 128820253Sjoerg } 128920253Sjoerg} 129020747Sdavidn 129120747Sdavidnstatic void 129285145Sachermopie(char const * name) 129320747Sdavidn{ 129485145Sache static const char etcopie[] = "/etc/opiekeys"; 129585145Sache FILE *fp = fopen(etcopie, "r+"); 129620747Sdavidn 129721052Sdavidn if (fp != NULL) { 129821052Sdavidn char tmp[1024]; 129921052Sdavidn off_t atofs = 0; 130021052Sdavidn int length = strlen(name); 130120747Sdavidn 130221052Sdavidn while (fgets(tmp, sizeof tmp, fp) != NULL) { 130321052Sdavidn if (strncmp(name, tmp, length) == 0 && tmp[length]==' ') { 130421052Sdavidn if (fseek(fp, atofs, SEEK_SET) == 0) { 130521052Sdavidn fwrite("#", 1, 1, fp); /* Comment username out */ 130621052Sdavidn } 130721052Sdavidn break; 130820747Sdavidn } 130921052Sdavidn atofs = ftell(fp); 131020747Sdavidn } 131121052Sdavidn /* 131221052Sdavidn * If we got an error of any sort, don't update! 131321052Sdavidn */ 131421052Sdavidn fclose(fp); 131520747Sdavidn } 131620747Sdavidn} 131720747Sdavidn 1318