pw_user.c revision 252688
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 252688 2013-07-04 07:59:11Z des $"; 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); 428246192Sdeischen if (grp != NULL && *grp->gr_mem == NULL) 429242349Sbapt delgrent(GETGRNAM(a_name->val)); 430242349Sbapt SETGRENT(); 431242349Sbapt while ((grp = GETGRENT()) != NULL) { 432242349Sbapt int i; 433242349Sbapt char group[MAXLOGNAME]; 434242349Sbapt for (i = 0; grp->gr_mem[i] != NULL; i++) { 435242349Sbapt if (!strcmp(grp->gr_mem[i], a_name->val)) { 436242349Sbapt while (grp->gr_mem[i] != NULL) { 437242349Sbapt grp->gr_mem[i] = grp->gr_mem[i+1]; 438242349Sbapt } 439242349Sbapt strlcpy(group, grp->gr_name, MAXLOGNAME); 440242349Sbapt chggrent(group, grp); 441242349Sbapt } 442242349Sbapt } 443242349Sbapt } 444242349Sbapt ENDGRENT(); 44520253Sjoerg 44620253Sjoerg pw_log(cnf, mode, W_USER, "%s(%ld) account removed", a_name->val, (long) uid); 44720253Sjoerg 44844229Sdavidn if (!PWALTDIR()) { 44944229Sdavidn /* 45044229Sdavidn * Remove mail file 45144229Sdavidn */ 45244229Sdavidn remove(file); 45320253Sjoerg 45444229Sdavidn /* 45544229Sdavidn * Remove at jobs 45644229Sdavidn */ 45744229Sdavidn if (getpwuid(uid) == NULL) 45844229Sdavidn rmat(uid); 45920253Sjoerg 46044229Sdavidn /* 46144229Sdavidn * Remove home directory and contents 46244229Sdavidn */ 46344229Sdavidn if (getarg(args, 'r') != NULL && *home == '/' && getpwuid(uid) == NULL) { 46444229Sdavidn if (stat(home, &st) != -1) { 46544229Sdavidn rm_r(home, uid); 46644229Sdavidn pw_log(cnf, mode, W_USER, "%s(%ld) home '%s' %sremoved", 46744229Sdavidn a_name->val, (long) uid, home, 46844229Sdavidn stat(home, &st) == -1 ? "" : "not completely "); 46944229Sdavidn } 47020253Sjoerg } 47120253Sjoerg } 47220267Sjoerg return EXIT_SUCCESS; 47320253Sjoerg } else if (mode == M_PRINT) 47444386Sdavidn return print_user(pwd, 47544386Sdavidn getarg(args, 'P') != NULL, 47644386Sdavidn getarg(args, '7') != NULL); 47720253Sjoerg 47820253Sjoerg /* 47920253Sjoerg * The rest is edit code 48020253Sjoerg */ 48120253Sjoerg if ((arg = getarg(args, 'l')) != NULL) { 48220253Sjoerg if (strcmp(pwd->pw_name, "root") == 0) 48330259Scharnier errx(EX_DATAERR, "can't rename `root' account"); 48420679Sdavidn pwd->pw_name = pw_checkname((u_char *)arg->val, 0); 48552527Sdavidn edited = 1; 48620253Sjoerg } 48752527Sdavidn 48861957Sache if ((arg = getarg(args, 'u')) != NULL && isdigit((unsigned char)*arg->val)) { 48920253Sjoerg pwd->pw_uid = (uid_t) atol(arg->val); 49052527Sdavidn edited = 1; 49120253Sjoerg if (pwd->pw_uid != 0 && strcmp(pwd->pw_name, "root") == 0) 49230259Scharnier errx(EX_DATAERR, "can't change uid of `root' account"); 49320253Sjoerg if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0) 49430259Scharnier warnx("WARNING: account `%s' will have a uid of 0 (superuser access!)", pwd->pw_name); 49520253Sjoerg } 49620253Sjoerg 49752527Sdavidn if ((arg = getarg(args, 'g')) != NULL && pwd->pw_uid != 0) { /* Already checked this */ 49852527Sdavidn gid_t newgid = (gid_t) GETGRNAM(cnf->default_group)->gr_gid; 49952527Sdavidn if (newgid != pwd->pw_gid) { 50052527Sdavidn edited = 1; 50161762Sdavidn pwd->pw_gid = newgid; 50252527Sdavidn } 50352527Sdavidn } 50452527Sdavidn 50520253Sjoerg if ((arg = getarg(args, 'p')) != NULL) { 50652527Sdavidn if (*arg->val == '\0' || strcmp(arg->val, "0") == 0) { 50752527Sdavidn if (pwd->pw_change != 0) { 50852527Sdavidn pwd->pw_change = 0; 50952527Sdavidn edited = 1; 51052527Sdavidn } 51152527Sdavidn } 51220253Sjoerg else { 51320253Sjoerg time_t now = time(NULL); 51420253Sjoerg time_t expire = parse_date(now, arg->val); 51520253Sjoerg 51652527Sdavidn if (pwd->pw_change != expire) { 51752527Sdavidn pwd->pw_change = expire; 51852527Sdavidn edited = 1; 51952527Sdavidn } 52020253Sjoerg } 52120253Sjoerg } 52252527Sdavidn 52320267Sjoerg if ((arg = getarg(args, 'e')) != NULL) { 52452527Sdavidn if (*arg->val == '\0' || strcmp(arg->val, "0") == 0) { 52552527Sdavidn if (pwd->pw_expire != 0) { 52652527Sdavidn pwd->pw_expire = 0; 52752527Sdavidn edited = 1; 52852527Sdavidn } 52952527Sdavidn } 53020253Sjoerg else { 53120253Sjoerg time_t now = time(NULL); 53220253Sjoerg time_t expire = parse_date(now, arg->val); 53320253Sjoerg 53452527Sdavidn if (pwd->pw_expire != expire) { 53552527Sdavidn pwd->pw_expire = expire; 53652527Sdavidn edited = 1; 53752527Sdavidn } 53820253Sjoerg } 53920253Sjoerg } 54020253Sjoerg 54152527Sdavidn if ((arg = getarg(args, 's')) != NULL) { 54252527Sdavidn char *shell = shell_path(cnf->shelldir, cnf->shells, arg->val); 54352527Sdavidn if (shell == NULL) 54452527Sdavidn shell = ""; 54552527Sdavidn if (strcmp(shell, pwd->pw_shell) != 0) { 54652527Sdavidn pwd->pw_shell = shell; 54752527Sdavidn edited = 1; 54852527Sdavidn } 54952527Sdavidn } 55020253Sjoerg 55152527Sdavidn if (getarg(args, 'L')) { 55252527Sdavidn if (cnf->default_class == NULL) 55352527Sdavidn cnf->default_class = ""; 55452527Sdavidn if (strcmp(pwd->pw_class, cnf->default_class) != 0) { 55552527Sdavidn pwd->pw_class = cnf->default_class; 55652527Sdavidn edited = 1; 55752527Sdavidn } 55852527Sdavidn } 55952527Sdavidn 56020747Sdavidn if ((arg = getarg(args, 'd')) != NULL) { 561130629Srobert if (strcmp(pwd->pw_dir, arg->val)) 562130629Srobert edited = 1; 56320747Sdavidn if (stat(pwd->pw_dir = arg->val, &st) == -1) { 56420747Sdavidn if (getarg(args, 'm') == NULL && strcmp(pwd->pw_dir, "/nonexistent") != 0) 56530259Scharnier warnx("WARNING: home `%s' does not exist", pwd->pw_dir); 56620747Sdavidn } else if (!S_ISDIR(st.st_mode)) 56730259Scharnier warnx("WARNING: home `%s' is not a directory", pwd->pw_dir); 56820747Sdavidn } 56920747Sdavidn 570124382Siedowse if ((arg = getarg(args, 'w')) != NULL && 571124382Siedowse getarg(args, 'h') == NULL && getarg(args, 'H') == NULL) { 57264918Sgreen login_cap_t *lc; 57364918Sgreen 57464918Sgreen lc = login_getpwclass(pwd); 57564918Sgreen if (lc == NULL || 576252688Sdes login_setcryptfmt(lc, "sha512", NULL) == NULL) 57764918Sgreen warn("setting crypt(3) format"); 57864918Sgreen login_close(lc); 57920267Sjoerg pwd->pw_passwd = pw_password(cnf, args, pwd->pw_name); 58052527Sdavidn edited = 1; 58152527Sdavidn } 58220267Sjoerg 58320253Sjoerg } else { 58464918Sgreen login_cap_t *lc; 58552527Sdavidn 58652527Sdavidn /* 58752527Sdavidn * Add code 58852527Sdavidn */ 58952527Sdavidn 59020253Sjoerg if (a_name == NULL) /* Required */ 59130259Scharnier errx(EX_DATAERR, "login name required"); 59244229Sdavidn else if ((pwd = GETPWNAM(a_name->val)) != NULL) /* Exists */ 59330259Scharnier errx(EX_DATAERR, "login name `%s' already exists", a_name->val); 59420253Sjoerg 59520253Sjoerg /* 59620253Sjoerg * Now, set up defaults for a new user 59720253Sjoerg */ 59820253Sjoerg pwd = &fakeuser; 59920253Sjoerg pwd->pw_name = a_name->val; 60020253Sjoerg pwd->pw_class = cnf->default_class ? cnf->default_class : ""; 60120253Sjoerg pwd->pw_uid = pw_uidpolicy(cnf, args); 60220253Sjoerg pwd->pw_gid = pw_gidpolicy(cnf, args, pwd->pw_name, (gid_t) pwd->pw_uid); 60320253Sjoerg pwd->pw_change = pw_pwdpolicy(cnf, args); 60420253Sjoerg pwd->pw_expire = pw_exppolicy(cnf, args); 60520253Sjoerg pwd->pw_dir = pw_homepolicy(cnf, args, pwd->pw_name); 60620253Sjoerg pwd->pw_shell = pw_shellpolicy(cnf, args, NULL); 60764918Sgreen lc = login_getpwclass(pwd); 60864918Sgreen if (lc == NULL || login_setcryptfmt(lc, "md5", NULL) == NULL) 60964918Sgreen warn("setting crypt(3) format"); 61064918Sgreen login_close(lc); 61164918Sgreen pwd->pw_passwd = pw_password(cnf, args, pwd->pw_name); 61252527Sdavidn edited = 1; 61320253Sjoerg 61420253Sjoerg if (pwd->pw_uid == 0 && strcmp(pwd->pw_name, "root") != 0) 61530259Scharnier warnx("WARNING: new account `%s' has a uid of 0 (superuser access!)", pwd->pw_name); 61620253Sjoerg } 61720253Sjoerg 61820253Sjoerg /* 61920253Sjoerg * Shared add/edit code 62020253Sjoerg */ 62152527Sdavidn if ((arg = getarg(args, 'c')) != NULL) { 62252527Sdavidn char *gecos = pw_checkname((u_char *)arg->val, 1); 62352527Sdavidn if (strcmp(pwd->pw_gecos, gecos) != 0) { 62452527Sdavidn pwd->pw_gecos = gecos; 62552527Sdavidn edited = 1; 62652527Sdavidn } 62752527Sdavidn } 62820253Sjoerg 629124382Siedowse if ((arg = getarg(args, 'h')) != NULL || 630124382Siedowse (arg = getarg(args, 'H')) != NULL) { 63163572Sdavidn if (strcmp(arg->val, "-") == 0) { 63263572Sdavidn if (!pwd->pw_passwd || *pwd->pw_passwd != '*') { 63363572Sdavidn pwd->pw_passwd = "*"; /* No access */ 63463572Sdavidn edited = 1; 63563572Sdavidn } 63663572Sdavidn } else { 63720253Sjoerg int fd = atoi(arg->val); 638124382Siedowse int precrypt = (arg->ch == 'H'); 63920253Sjoerg int b; 64020253Sjoerg int istty = isatty(fd); 64120253Sjoerg struct termios t; 64264918Sgreen login_cap_t *lc; 64320253Sjoerg 64420253Sjoerg if (istty) { 64520253Sjoerg if (tcgetattr(fd, &t) == -1) 64620253Sjoerg istty = 0; 64720253Sjoerg else { 64820253Sjoerg struct termios n = t; 64920253Sjoerg 65020253Sjoerg /* Disable echo */ 65120253Sjoerg n.c_lflag &= ~(ECHO); 65220253Sjoerg tcsetattr(fd, TCSANOW, &n); 653124382Siedowse printf("%s%spassword for user %s:", 654124382Siedowse (mode == M_UPDATE) ? "new " : "", 655124382Siedowse precrypt ? "encrypted " : "", 656124382Siedowse pwd->pw_name); 65720253Sjoerg fflush(stdout); 65820253Sjoerg } 65920253Sjoerg } 66020253Sjoerg b = read(fd, line, sizeof(line) - 1); 66120253Sjoerg if (istty) { /* Restore state */ 66220253Sjoerg tcsetattr(fd, TCSANOW, &t); 66320253Sjoerg fputc('\n', stdout); 66420253Sjoerg fflush(stdout); 66520253Sjoerg } 66620253Sjoerg if (b < 0) { 667124382Siedowse warn("-%c file descriptor", precrypt ? 'H' : 668124382Siedowse 'h'); 66920267Sjoerg return EX_IOERR; 67020253Sjoerg } 67120253Sjoerg line[b] = '\0'; 672168045Sle if ((p = strpbrk(line, "\r\n")) != NULL) 67320253Sjoerg *p = '\0'; 67420253Sjoerg if (!*line) 67530259Scharnier errx(EX_DATAERR, "empty password read on file descriptor %d", fd); 676124382Siedowse if (precrypt) { 677124382Siedowse if (strchr(line, ':') != NULL) 678124382Siedowse return EX_DATAERR; 679124382Siedowse pwd->pw_passwd = line; 680124382Siedowse } else { 681124382Siedowse lc = login_getpwclass(pwd); 682124382Siedowse if (lc == NULL || 683124382Siedowse login_setcryptfmt(lc, "md5", NULL) == NULL) 684124382Siedowse warn("setting crypt(3) format"); 685124382Siedowse login_close(lc); 686124382Siedowse pwd->pw_passwd = pw_pwcrypt(line); 687124382Siedowse } 68852527Sdavidn edited = 1; 68920253Sjoerg } 69020253Sjoerg } 69120267Sjoerg 69220267Sjoerg /* 69320267Sjoerg * Special case: -N only displays & exits 69420267Sjoerg */ 69520267Sjoerg if (getarg(args, 'N') != NULL) 69644386Sdavidn return print_user(pwd, 69744386Sdavidn getarg(args, 'P') != NULL, 69844386Sdavidn getarg(args, '7') != NULL); 69920267Sjoerg 70021330Sdavidn if (mode == M_ADD) { 70152527Sdavidn edited = 1; /* Always */ 70252502Sdavidn rc = addpwent(pwd); 70352502Sdavidn if (rc == -1) { 70452502Sdavidn warnx("user '%s' already exists", pwd->pw_name); 70552502Sdavidn return EX_IOERR; 70652502Sdavidn } else if (rc != 0) { 70756000Sdavidn warn("passwd file update"); 70852502Sdavidn return EX_IOERR; 70952502Sdavidn } 71052502Sdavidn if (cnf->nispasswd && *cnf->nispasswd=='/') { 71152502Sdavidn rc = addnispwent(cnf->nispasswd, pwd); 71252502Sdavidn if (rc == -1) 71352502Sdavidn warnx("User '%s' already exists in NIS passwd", pwd->pw_name); 71452502Sdavidn else 71556000Sdavidn warn("NIS passwd update"); 71652502Sdavidn /* NOTE: we treat NIS-only update errors as non-fatal */ 71752502Sdavidn } 71852512Sdavidn } else if (mode == M_UPDATE || mode == M_LOCK || mode == M_UNLOCK) { 71952527Sdavidn if (edited) { /* Only updated this if required */ 72052527Sdavidn rc = chgpwent(a_name->val, pwd); 72152527Sdavidn if (rc == -1) { 72252527Sdavidn warnx("user '%s' does not exist (NIS?)", pwd->pw_name); 72352527Sdavidn return EX_IOERR; 72452527Sdavidn } else if (rc != 0) { 72556000Sdavidn warn("passwd file update"); 72652527Sdavidn return EX_IOERR; 72752527Sdavidn } 72852527Sdavidn if ( cnf->nispasswd && *cnf->nispasswd=='/') { 72952527Sdavidn rc = chgnispwent(cnf->nispasswd, a_name->val, pwd); 73052527Sdavidn if (rc == -1) 73152527Sdavidn warn("User '%s' not found in NIS passwd", pwd->pw_name); 73252527Sdavidn else 73356000Sdavidn warn("NIS passwd update"); 73452527Sdavidn /* NOTE: NIS-only update errors are not fatal */ 73552527Sdavidn } 73652502Sdavidn } 73721330Sdavidn } 73821330Sdavidn 73920253Sjoerg /* 74020253Sjoerg * Ok, user is created or changed - now edit group file 74120253Sjoerg */ 74220253Sjoerg 743242349Sbapt if (mode == M_ADD || getarg(args, 'G') != NULL) { 744244737Sbapt int i; 745242349Sbapt for (i = 0; cnf->groups[i] != NULL; i++) { 746242349Sbapt grp = GETGRNAM(cnf->groups[i]); 747244737Sbapt grp = gr_add(grp, pwd->pw_name); 748244737Sbapt /* 749244737Sbapt * grp can only be NULL in 2 cases: 750244737Sbapt * - the new member is already a member 751244737Sbapt * - a problem with memory occurs 752244737Sbapt * in both cases we want to skip now. 753244737Sbapt */ 754244737Sbapt if (grp == NULL) 755242349Sbapt continue; 756242349Sbapt chggrent(cnf->groups[i], grp); 757245114Smjg free(grp); 758242349Sbapt } 759242349Sbapt } 760242349Sbapt 761242349Sbapt 76261759Sdavidn /* go get a current version of pwd */ 76361759Sdavidn pwd = GETPWNAM(a_name->val); 76461759Sdavidn if (pwd == NULL) { 76561759Sdavidn /* This will fail when we rename, so special case that */ 76661759Sdavidn if (mode == M_UPDATE && (arg = getarg(args, 'l')) != NULL) { 76761759Sdavidn a_name->val = arg->val; /* update new name */ 76861759Sdavidn pwd = GETPWNAM(a_name->val); /* refetch renamed rec */ 76961759Sdavidn } 77061759Sdavidn } 77161759Sdavidn if (pwd == NULL) /* can't go on without this */ 77230259Scharnier errx(EX_NOUSER, "user '%s' disappeared during update", a_name->val); 77320253Sjoerg 77444229Sdavidn grp = GETGRGID(pwd->pw_gid); 77598744Sdwmalone pw_log(cnf, mode, W_USER, "%s(%ld):%s(%ld):%s:%s:%s", 77620253Sjoerg pwd->pw_name, (long) pwd->pw_uid, 77720253Sjoerg grp ? grp->gr_name : "unknown", (long) (grp ? grp->gr_gid : -1), 77820253Sjoerg pwd->pw_gecos, pwd->pw_dir, pwd->pw_shell); 77920253Sjoerg 78020253Sjoerg /* 78120253Sjoerg * If adding, let's touch and chown the user's mail file. This is not 78220253Sjoerg * strictly necessary under BSD with a 0755 maildir but it also 78320253Sjoerg * doesn't hurt anything to create the empty mailfile 78420253Sjoerg */ 78520253Sjoerg if (mode == M_ADD) { 78644229Sdavidn if (!PWALTDIR()) { 78744229Sdavidn sprintf(line, "%s/%s", _PATH_MAILDIR, pwd->pw_name); 78844229Sdavidn close(open(line, O_RDWR | O_CREAT, 0600)); /* Preserve contents & 78944229Sdavidn * mtime */ 79044229Sdavidn chown(line, pwd->pw_uid, pwd->pw_gid); 79120253Sjoerg } 79220253Sjoerg } 79352527Sdavidn 79420253Sjoerg /* 79582868Sdd * Let's create and populate the user's home directory. Note 79620253Sjoerg * that this also `works' for editing users if -m is used, but 79720253Sjoerg * existing files will *not* be overwritten. 79820253Sjoerg */ 79944229Sdavidn if (!PWALTDIR() && getarg(args, 'm') != NULL && pwd->pw_dir && *pwd->pw_dir == '/' && pwd->pw_dir[1]) { 800168044Sle copymkdir(pwd->pw_dir, cnf->dotdir, cnf->homemode, pwd->pw_uid, pwd->pw_gid); 80120253Sjoerg pw_log(cnf, mode, W_USER, "%s(%ld) home %s made", 80220253Sjoerg pwd->pw_name, (long) pwd->pw_uid, pwd->pw_dir); 80320253Sjoerg } 80452527Sdavidn 80582868Sdd 80682868Sdd /* 80782868Sdd * Finally, send mail to the new user as well, if we are asked to 80882868Sdd */ 80982868Sdd if (mode == M_ADD && !PWALTDIR() && cnf->newmail && *cnf->newmail && (fp = fopen(cnf->newmail, "r")) != NULL) { 81082868Sdd FILE *pfp = popen(_PATH_SENDMAIL " -t", "w"); 81182868Sdd 81282868Sdd if (pfp == NULL) 81382868Sdd warn("sendmail"); 81482868Sdd else { 81582868Sdd fprintf(pfp, "From: root\n" "To: %s\n" "Subject: Welcome!\n\n", pwd->pw_name); 81682868Sdd while (fgets(line, sizeof(line), fp) != NULL) { 81782868Sdd /* Do substitutions? */ 81882868Sdd fputs(line, pfp); 81982868Sdd } 82082868Sdd pclose(pfp); 82182868Sdd pw_log(cnf, mode, W_USER, "%s(%ld) new user mail sent", 82282868Sdd pwd->pw_name, (long) pwd->pw_uid); 82382868Sdd } 82482868Sdd fclose(fp); 82582868Sdd } 82682868Sdd 82720267Sjoerg return EXIT_SUCCESS; 82820253Sjoerg} 82920253Sjoerg 83020253Sjoerg 83120253Sjoergstatic uid_t 83220253Sjoergpw_uidpolicy(struct userconf * cnf, struct cargs * args) 83320253Sjoerg{ 83420253Sjoerg struct passwd *pwd; 83520253Sjoerg uid_t uid = (uid_t) - 1; 83620253Sjoerg struct carg *a_uid = getarg(args, 'u'); 83720253Sjoerg 83820253Sjoerg /* 83920253Sjoerg * Check the given uid, if any 84020253Sjoerg */ 84120253Sjoerg if (a_uid != NULL) { 84220253Sjoerg uid = (uid_t) atol(a_uid->val); 84320253Sjoerg 84444229Sdavidn if ((pwd = GETPWUID(uid)) != NULL && getarg(args, 'o') == NULL) 84530259Scharnier errx(EX_DATAERR, "uid `%ld' has already been allocated", (long) pwd->pw_uid); 84620253Sjoerg } else { 84720253Sjoerg struct bitmap bm; 84820253Sjoerg 84920253Sjoerg /* 85020253Sjoerg * We need to allocate the next available uid under one of 85120253Sjoerg * two policies a) Grab the first unused uid b) Grab the 85220253Sjoerg * highest possible unused uid 85320253Sjoerg */ 85420253Sjoerg if (cnf->min_uid >= cnf->max_uid) { /* Sanity 85520253Sjoerg * claus^H^H^H^Hheck */ 85620253Sjoerg cnf->min_uid = 1000; 85720253Sjoerg cnf->max_uid = 32000; 85820253Sjoerg } 85920253Sjoerg bm = bm_alloc(cnf->max_uid - cnf->min_uid + 1); 86020253Sjoerg 86120253Sjoerg /* 86220253Sjoerg * Now, let's fill the bitmap from the password file 86320253Sjoerg */ 86444229Sdavidn SETPWENT(); 86544229Sdavidn while ((pwd = GETPWENT()) != NULL) 86644229Sdavidn if (pwd->pw_uid >= (uid_t) cnf->min_uid && pwd->pw_uid <= (uid_t) cnf->max_uid) 86720253Sjoerg bm_setbit(&bm, pwd->pw_uid - cnf->min_uid); 86844229Sdavidn ENDPWENT(); 86920253Sjoerg 87020253Sjoerg /* 87120253Sjoerg * Then apply the policy, with fallback to reuse if necessary 87220253Sjoerg */ 87320253Sjoerg if (cnf->reuse_uids || (uid = (uid_t) (bm_lastset(&bm) + cnf->min_uid + 1)) > cnf->max_uid) 87420253Sjoerg uid = (uid_t) (bm_firstunset(&bm) + cnf->min_uid); 87520253Sjoerg 87620253Sjoerg /* 87720253Sjoerg * Another sanity check 87820253Sjoerg */ 87920253Sjoerg if (uid < cnf->min_uid || uid > cnf->max_uid) 88030259Scharnier errx(EX_SOFTWARE, "unable to allocate a new uid - range fully used"); 88120253Sjoerg bm_dealloc(&bm); 88220253Sjoerg } 88320253Sjoerg return uid; 88420253Sjoerg} 88520253Sjoerg 88620253Sjoerg 88720253Sjoergstatic uid_t 88820253Sjoergpw_gidpolicy(struct userconf * cnf, struct cargs * args, char *nam, gid_t prefer) 88920253Sjoerg{ 89020253Sjoerg struct group *grp; 89120253Sjoerg gid_t gid = (uid_t) - 1; 89220253Sjoerg struct carg *a_gid = getarg(args, 'g'); 89320253Sjoerg 89420253Sjoerg /* 89520253Sjoerg * If no arg given, see if default can help out 89620253Sjoerg */ 89720253Sjoerg if (a_gid == NULL && cnf->default_group && *cnf->default_group) 89820253Sjoerg a_gid = addarg(args, 'g', cnf->default_group); 89920253Sjoerg 90020253Sjoerg /* 90120253Sjoerg * Check the given gid, if any 90220253Sjoerg */ 90344229Sdavidn SETGRENT(); 90420253Sjoerg if (a_gid != NULL) { 90544229Sdavidn if ((grp = GETGRNAM(a_gid->val)) == NULL) { 90620253Sjoerg gid = (gid_t) atol(a_gid->val); 90761957Sache if ((gid == 0 && !isdigit((unsigned char)*a_gid->val)) || (grp = GETGRGID(gid)) == NULL) 90830259Scharnier errx(EX_NOUSER, "group `%s' is not defined", a_gid->val); 90920253Sjoerg } 91020253Sjoerg gid = grp->gr_gid; 91144229Sdavidn } else if ((grp = GETGRNAM(nam)) != NULL && grp->gr_mem[0] == NULL) { 91220267Sjoerg gid = grp->gr_gid; /* Already created? Use it anyway... */ 91320253Sjoerg } else { 91420253Sjoerg struct cargs grpargs; 91520253Sjoerg char tmp[32]; 91620253Sjoerg 91720253Sjoerg LIST_INIT(&grpargs); 91820253Sjoerg addarg(&grpargs, 'n', nam); 91920253Sjoerg 92020253Sjoerg /* 92120253Sjoerg * We need to auto-create a group with the user's name. We 92220253Sjoerg * can send all the appropriate output to our sister routine 92320253Sjoerg * bit first see if we can create a group with gid==uid so we 92420253Sjoerg * can keep the user and group ids in sync. We purposely do 92520253Sjoerg * NOT check the gid range if we can force the sync. If the 92620253Sjoerg * user's name dups an existing group, then the group add 92720253Sjoerg * function will happily handle that case for us and exit. 92820253Sjoerg */ 92944229Sdavidn if (GETGRGID(prefer) == NULL) { 93020253Sjoerg sprintf(tmp, "%lu", (unsigned long) prefer); 93120253Sjoerg addarg(&grpargs, 'g', tmp); 93220253Sjoerg } 93320267Sjoerg if (getarg(args, 'N')) 93420267Sjoerg { 93520267Sjoerg addarg(&grpargs, 'N', NULL); 93620267Sjoerg addarg(&grpargs, 'q', NULL); 93720267Sjoerg gid = pw_group(cnf, M_NEXT, &grpargs); 93820267Sjoerg } 93920267Sjoerg else 94020267Sjoerg { 94120267Sjoerg pw_group(cnf, M_ADD, &grpargs); 94244229Sdavidn if ((grp = GETGRNAM(nam)) != NULL) 94320267Sjoerg gid = grp->gr_gid; 94420267Sjoerg } 94570486Sben a_gid = LIST_FIRST(&grpargs); 94620253Sjoerg while (a_gid != NULL) { 94770486Sben struct carg *t = LIST_NEXT(a_gid, list); 94820253Sjoerg LIST_REMOVE(a_gid, list); 94920253Sjoerg a_gid = t; 95020253Sjoerg } 95120253Sjoerg } 95244229Sdavidn ENDGRENT(); 95320253Sjoerg return gid; 95420253Sjoerg} 95520253Sjoerg 95620253Sjoerg 95720253Sjoergstatic time_t 95820253Sjoergpw_pwdpolicy(struct userconf * cnf, struct cargs * args) 95920253Sjoerg{ 96020253Sjoerg time_t result = 0; 96120253Sjoerg time_t now = time(NULL); 96227831Sdavidn struct carg *arg = getarg(args, 'p'); 96320253Sjoerg 96420253Sjoerg if (arg != NULL) { 96520253Sjoerg if ((result = parse_date(now, arg->val)) == now) 96630259Scharnier errx(EX_DATAERR, "invalid date/time `%s'", arg->val); 96720253Sjoerg } else if (cnf->password_days > 0) 96820253Sjoerg result = now + ((long) cnf->password_days * 86400L); 96920253Sjoerg return result; 97020253Sjoerg} 97120253Sjoerg 97220253Sjoerg 97320253Sjoergstatic time_t 97420253Sjoergpw_exppolicy(struct userconf * cnf, struct cargs * args) 97520253Sjoerg{ 97620253Sjoerg time_t result = 0; 97720253Sjoerg time_t now = time(NULL); 97820253Sjoerg struct carg *arg = getarg(args, 'e'); 97920253Sjoerg 98020253Sjoerg if (arg != NULL) { 98120253Sjoerg if ((result = parse_date(now, arg->val)) == now) 98230259Scharnier errx(EX_DATAERR, "invalid date/time `%s'", arg->val); 98320253Sjoerg } else if (cnf->expire_days > 0) 98420253Sjoerg result = now + ((long) cnf->expire_days * 86400L); 98520253Sjoerg return result; 98620253Sjoerg} 98720253Sjoerg 98820253Sjoerg 98920253Sjoergstatic char * 99020253Sjoergpw_homepolicy(struct userconf * cnf, struct cargs * args, char const * user) 99120253Sjoerg{ 99220253Sjoerg struct carg *arg = getarg(args, 'd'); 99320253Sjoerg 99420253Sjoerg if (arg) 99520253Sjoerg return arg->val; 99620253Sjoerg else { 99720253Sjoerg static char home[128]; 99820253Sjoerg 99920253Sjoerg if (cnf->home == NULL || *cnf->home == '\0') 100030259Scharnier errx(EX_CONFIG, "no base home directory set"); 100120253Sjoerg sprintf(home, "%s/%s", cnf->home, user); 100220253Sjoerg return home; 100320253Sjoerg } 100420253Sjoerg} 100520253Sjoerg 100620253Sjoergstatic char * 100720253Sjoergshell_path(char const * path, char *shells[], char *sh) 100820253Sjoerg{ 100920253Sjoerg if (sh != NULL && (*sh == '/' || *sh == '\0')) 101020253Sjoerg return sh; /* specified full path or forced none */ 101120253Sjoerg else { 101220253Sjoerg char *p; 101320253Sjoerg char paths[_UC_MAXLINE]; 101420253Sjoerg 101520253Sjoerg /* 101620253Sjoerg * We need to search paths 101720253Sjoerg */ 1018130633Srobert strlcpy(paths, path, sizeof(paths)); 101920253Sjoerg for (p = strtok(paths, ": \t\r\n"); p != NULL; p = strtok(NULL, ": \t\r\n")) { 102020253Sjoerg int i; 102120253Sjoerg static char shellpath[256]; 102220253Sjoerg 102320253Sjoerg if (sh != NULL) { 102420253Sjoerg sprintf(shellpath, "%s/%s", p, sh); 102520253Sjoerg if (access(shellpath, X_OK) == 0) 102620253Sjoerg return shellpath; 102720253Sjoerg } else 102820253Sjoerg for (i = 0; i < _UC_MAXSHELLS && shells[i] != NULL; i++) { 102920253Sjoerg sprintf(shellpath, "%s/%s", p, shells[i]); 103020253Sjoerg if (access(shellpath, X_OK) == 0) 103120253Sjoerg return shellpath; 103220253Sjoerg } 103320253Sjoerg } 103420253Sjoerg if (sh == NULL) 103530259Scharnier errx(EX_OSFILE, "can't find shell `%s' in shell paths", sh); 103630259Scharnier errx(EX_CONFIG, "no default shell available or defined"); 103720253Sjoerg return NULL; 103820253Sjoerg } 103920253Sjoerg} 104020253Sjoerg 104120253Sjoerg 104220253Sjoergstatic char * 104320253Sjoergpw_shellpolicy(struct userconf * cnf, struct cargs * args, char *newshell) 104420253Sjoerg{ 104520253Sjoerg char *sh = newshell; 104620253Sjoerg struct carg *arg = getarg(args, 's'); 104720253Sjoerg 104820253Sjoerg if (newshell == NULL && arg != NULL) 104920253Sjoerg sh = arg->val; 105020253Sjoerg return shell_path(cnf->shelldir, cnf->shells, sh ? sh : cnf->shell_default); 105120253Sjoerg} 105220253Sjoerg 1053179365Santoine#define SALTSIZE 32 105420253Sjoerg 1055179365Santoinestatic char const chars[] = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ./"; 1056179365Santoine 105720253Sjoergchar * 105820253Sjoergpw_pwcrypt(char *password) 105920253Sjoerg{ 106020253Sjoerg int i; 1061179365Santoine char salt[SALTSIZE + 1]; 1062231994Skevlo char *cryptpw; 106320253Sjoerg 106420253Sjoerg static char buf[256]; 106520253Sjoerg 106620253Sjoerg /* 106720253Sjoerg * Calculate a salt value 106820253Sjoerg */ 1069179365Santoine for (i = 0; i < SALTSIZE; i++) 1070181785Sache salt[i] = chars[arc4random_uniform(sizeof(chars) - 1)]; 1071179365Santoine salt[SALTSIZE] = '\0'; 107220253Sjoerg 1073231994Skevlo cryptpw = crypt(password, salt); 1074231994Skevlo if (cryptpw == NULL) 1075231994Skevlo errx(EX_CONFIG, "crypt(3) failure"); 1076231994Skevlo return strcpy(buf, cryptpw); 107720253Sjoerg} 107820253Sjoerg 107920590Sdavidn 108020253Sjoergstatic char * 108120253Sjoergpw_password(struct userconf * cnf, struct cargs * args, char const * user) 108220253Sjoerg{ 108320253Sjoerg int i, l; 108420253Sjoerg char pwbuf[32]; 108520253Sjoerg 108620253Sjoerg switch (cnf->default_password) { 108720253Sjoerg case -1: /* Random password */ 108873563Skris l = (arc4random() % 8 + 8); /* 8 - 16 chars */ 108920253Sjoerg for (i = 0; i < l; i++) 1090181785Sache pwbuf[i] = chars[arc4random_uniform(sizeof(chars)-1)]; 109120253Sjoerg pwbuf[i] = '\0'; 109220253Sjoerg 109320253Sjoerg /* 109420253Sjoerg * We give this information back to the user 109520253Sjoerg */ 1096124382Siedowse if (getarg(args, 'h') == NULL && getarg(args, 'H') == NULL && 1097124382Siedowse getarg(args, 'N') == NULL) { 109861957Sache if (isatty(STDOUT_FILENO)) 109920712Sdavidn printf("Password for '%s' is: ", user); 110020253Sjoerg printf("%s\n", pwbuf); 110120253Sjoerg fflush(stdout); 110220253Sjoerg } 110320253Sjoerg break; 110420253Sjoerg 110520253Sjoerg case -2: /* No password at all! */ 110620253Sjoerg return ""; 110720253Sjoerg 110820253Sjoerg case 0: /* No login - default */ 110920253Sjoerg default: 111020253Sjoerg return "*"; 111120253Sjoerg 111220253Sjoerg case 1: /* user's name */ 1113130633Srobert strlcpy(pwbuf, user, sizeof(pwbuf)); 111420253Sjoerg break; 111520253Sjoerg } 111620253Sjoerg return pw_pwcrypt(pwbuf); 111720253Sjoerg} 111820253Sjoerg 111920253Sjoerg 112020253Sjoergstatic int 112144386Sdavidnprint_user(struct passwd * pwd, int pretty, int v7) 112220253Sjoerg{ 112320253Sjoerg if (!pretty) { 1124242349Sbapt char *buf; 112520253Sjoerg 1126242349Sbapt if (!v7) 1127242349Sbapt pwd->pw_passwd = (pwd->pw_passwd == NULL) ? "" : "*"; 1128242349Sbapt 1129242349Sbapt buf = v7 ? pw_make_v7(pwd) : pw_make(pwd); 1130242349Sbapt printf("%s\n", buf); 1131242349Sbapt free(buf); 113220253Sjoerg } else { 113320267Sjoerg int j; 113420253Sjoerg char *p; 113544229Sdavidn struct group *grp = GETGRGID(pwd->pw_gid); 113620253Sjoerg char uname[60] = "User &", office[60] = "[None]", 113720253Sjoerg wphone[60] = "[None]", hphone[60] = "[None]"; 113820590Sdavidn char acexpire[32] = "[None]", pwexpire[32] = "[None]"; 113920590Sdavidn struct tm * tptr; 114020253Sjoerg 114120253Sjoerg if ((p = strtok(pwd->pw_gecos, ",")) != NULL) { 1142130633Srobert strlcpy(uname, p, sizeof(uname)); 114320253Sjoerg if ((p = strtok(NULL, ",")) != NULL) { 1144130633Srobert strlcpy(office, p, sizeof(office)); 114520253Sjoerg if ((p = strtok(NULL, ",")) != NULL) { 1146130633Srobert strlcpy(wphone, p, sizeof(wphone)); 114720253Sjoerg if ((p = strtok(NULL, "")) != NULL) { 1148130633Srobert strlcpy(hphone, p, 1149130633Srobert sizeof(hphone)); 115020253Sjoerg } 115120253Sjoerg } 115220253Sjoerg } 115320253Sjoerg } 115420253Sjoerg /* 115520253Sjoerg * Handle '&' in gecos field 115620253Sjoerg */ 115720253Sjoerg if ((p = strchr(uname, '&')) != NULL) { 115820253Sjoerg int l = strlen(pwd->pw_name); 115920253Sjoerg int m = strlen(p); 116020253Sjoerg 116120253Sjoerg memmove(p + l, p + 1, m); 116220253Sjoerg memmove(p, pwd->pw_name, l); 116361957Sache *p = (char) toupper((unsigned char)*p); 116420253Sjoerg } 116520590Sdavidn if (pwd->pw_expire > (time_t)0 && (tptr = localtime(&pwd->pw_expire)) != NULL) 116674569Sache strftime(acexpire, sizeof acexpire, "%c", tptr); 116761957Sache if (pwd->pw_change > (time_t)0 && (tptr = localtime(&pwd->pw_change)) != NULL) 116874569Sache strftime(pwexpire, sizeof pwexpire, "%c", tptr); 116922394Sdavidn printf("Login Name: %-15s #%-12ld Group: %-15s #%ld\n" 117020747Sdavidn " Full Name: %s\n" 117120747Sdavidn " Home: %-26.26s Class: %s\n" 117220747Sdavidn " Shell: %-26.26s Office: %s\n" 117320747Sdavidn "Work Phone: %-26.26s Home Phone: %s\n" 117420747Sdavidn "Acc Expire: %-26.26s Pwd Expire: %s\n", 117520253Sjoerg pwd->pw_name, (long) pwd->pw_uid, 117620253Sjoerg grp ? grp->gr_name : "(invalid)", (long) pwd->pw_gid, 117720253Sjoerg uname, pwd->pw_dir, pwd->pw_class, 117820590Sdavidn pwd->pw_shell, office, wphone, hphone, 117920590Sdavidn acexpire, pwexpire); 118044229Sdavidn SETGRENT(); 118120267Sjoerg j = 0; 118244229Sdavidn while ((grp=GETGRENT()) != NULL) 118320267Sjoerg { 118420267Sjoerg int i = 0; 118520747Sdavidn while (grp->gr_mem[i] != NULL) 118620267Sjoerg { 118720267Sjoerg if (strcmp(grp->gr_mem[i], pwd->pw_name)==0) 118820267Sjoerg { 118920747Sdavidn printf(j++ == 0 ? " Groups: %s" : ",%s", grp->gr_name); 119020267Sjoerg break; 119120267Sjoerg } 119220267Sjoerg ++i; 119320267Sjoerg } 119420267Sjoerg } 119544229Sdavidn ENDGRENT(); 119661957Sache printf("%s", j ? "\n" : ""); 119720253Sjoerg } 119820267Sjoerg return EXIT_SUCCESS; 119920253Sjoerg} 120020253Sjoerg 120120679Sdavidnchar * 120220679Sdavidnpw_checkname(u_char *name, int gecos) 120320253Sjoerg{ 1204109961Sgad char showch[8]; 1205109961Sgad u_char const *badchars, *ch, *showtype; 1206109961Sgad int reject; 120720253Sjoerg 1208109961Sgad ch = name; 1209109961Sgad reject = 0; 1210109961Sgad if (gecos) { 1211109961Sgad /* See if the name is valid as a gecos (comment) field. */ 1212109961Sgad badchars = ":!@"; 1213109961Sgad showtype = "gecos field"; 1214109961Sgad } else { 1215109961Sgad /* See if the name is valid as a userid or group. */ 1216109961Sgad badchars = " ,\t:+&#%$^()!@~*?<>=|\\/\""; 1217109961Sgad showtype = "userid/group name"; 1218109961Sgad /* Userids and groups can not have a leading '-'. */ 1219109961Sgad if (*ch == '-') 1220109961Sgad reject = 1; 122120253Sjoerg } 1222109961Sgad if (!reject) { 1223109961Sgad while (*ch) { 1224109961Sgad if (strchr(badchars, *ch) != NULL || *ch < ' ' || 1225109961Sgad *ch == 127) { 1226109961Sgad reject = 1; 1227109961Sgad break; 1228109961Sgad } 1229109961Sgad /* 8-bit characters are only allowed in GECOS fields */ 1230109961Sgad if (!gecos && (*ch & 0x80)) { 1231109961Sgad reject = 1; 1232109961Sgad break; 1233109961Sgad } 1234109961Sgad ch++; 1235109961Sgad } 1236109961Sgad } 1237109961Sgad /* 1238109961Sgad * A `$' is allowed as the final character for userids and groups, 1239109961Sgad * mainly for the benefit of samba. 1240109961Sgad */ 1241109961Sgad if (reject && !gecos) { 1242109961Sgad if (*ch == '$' && *(ch + 1) == '\0') { 1243109961Sgad reject = 0; 1244109961Sgad ch++; 1245109961Sgad } 1246109961Sgad } 1247109961Sgad if (reject) { 1248109961Sgad snprintf(showch, sizeof(showch), (*ch >= ' ' && *ch < 127) 1249109961Sgad ? "`%c'" : "0x%02x", *ch); 1250228673Sdim errx(EX_DATAERR, "invalid character %s at position %td in %s", 1251109961Sgad showch, (ch - name), showtype); 1252109961Sgad } 1253109961Sgad if (!gecos && (ch - name) > LOGNAMESIZE) 1254109961Sgad errx(EX_DATAERR, "name too long `%s' (max is %d)", name, 1255109961Sgad LOGNAMESIZE); 125620679Sdavidn return (char *)name; 125720253Sjoerg} 125820253Sjoerg 125920253Sjoerg 126020253Sjoergstatic void 126120253Sjoergrmat(uid_t uid) 126220253Sjoerg{ 126320253Sjoerg DIR *d = opendir("/var/at/jobs"); 126420253Sjoerg 126520253Sjoerg if (d != NULL) { 126620253Sjoerg struct dirent *e; 126720253Sjoerg 126820253Sjoerg while ((e = readdir(d)) != NULL) { 126920253Sjoerg struct stat st; 127020253Sjoerg 127120253Sjoerg if (strncmp(e->d_name, ".lock", 5) != 0 && 127220253Sjoerg stat(e->d_name, &st) == 0 && 127320253Sjoerg !S_ISDIR(st.st_mode) && 127420253Sjoerg st.st_uid == uid) { 127520253Sjoerg char tmp[MAXPATHLEN]; 127620253Sjoerg 127720253Sjoerg sprintf(tmp, "/usr/bin/atrm %s", e->d_name); 127820253Sjoerg system(tmp); 127920253Sjoerg } 128020253Sjoerg } 128120253Sjoerg closedir(d); 128220253Sjoerg } 128320253Sjoerg} 128420747Sdavidn 128520747Sdavidnstatic void 128685145Sachermopie(char const * name) 128720747Sdavidn{ 128885145Sache static const char etcopie[] = "/etc/opiekeys"; 128985145Sache FILE *fp = fopen(etcopie, "r+"); 129020747Sdavidn 129121052Sdavidn if (fp != NULL) { 129221052Sdavidn char tmp[1024]; 129321052Sdavidn off_t atofs = 0; 129421052Sdavidn int length = strlen(name); 129520747Sdavidn 129621052Sdavidn while (fgets(tmp, sizeof tmp, fp) != NULL) { 129721052Sdavidn if (strncmp(name, tmp, length) == 0 && tmp[length]==' ') { 129821052Sdavidn if (fseek(fp, atofs, SEEK_SET) == 0) { 129921052Sdavidn fwrite("#", 1, 1, fp); /* Comment username out */ 130021052Sdavidn } 130121052Sdavidn break; 130220747Sdavidn } 130321052Sdavidn atofs = ftell(fp); 130420747Sdavidn } 130521052Sdavidn /* 130621052Sdavidn * If we got an error of any sort, don't update! 130721052Sdavidn */ 130821052Sdavidn fclose(fp); 130920747Sdavidn } 131020747Sdavidn} 131120747Sdavidn 1312