adduser/adduser.sh

   1 #!/bin/sh
   2 #
   3 # Copyright (c) 2002-2004 Michael Telahun Makonnen. All rights reserved.
   4 #
   5 # Redistribution and use in source and binary forms, with or without
   6 # modification, are permitted provided that the following conditions
   7 # are met:
   8 # 1. Redistributions of source code must retain the above copyright
   9 #    notice, this list of conditions and the following disclaimer.
  10 # 2. Redistributions in binary form must reproduce the above copyright
  11 #    notice, this list of conditions and the following disclaimer in the
  12 #    documentation and/or other materials provided with the distribution.
  13 #
  14 # THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  15 # IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  16 # OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  17 # IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  18 # INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  19 # NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  20 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  21 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  22 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  23 # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  24 #
  25 #       Email: Mike Makonnen <mtm@FreeBSD.Org>
  26 #
  27 # $FreeBSD$
  28 #
  29
  30 # err msg
  31 #       Display $msg on stderr, unless we're being quiet.
  32 #
  33 err() {
  34         if [ -z "$quietflag" ]; then
  35                 echo 1>&2 ${THISCMD}: ERROR: $*
  36         fi
  37 }
  38
  39 # info msg
  40 #       Display $msg on stdout, unless we're being quiet.
  41 #
  42 info() {
  43         if [ -z "$quietflag" ]; then
  44                 echo ${THISCMD}: INFO: $*
  45         fi
  46 }
  47
  48 # get_nextuid
  49 #       Output the value of $_uid if it is available for use. If it
  50 #       is not, output the value of the next higher uid that is available.
  51 #       If a uid is not specified, output the first available uid, as indicated
  52 #       by pw(8).
  53 #
  54 get_nextuid () {
  55         _uid=$1
  56         _nextuid=
  57
  58         if [ -z "$_uid" ]; then
  59                 _nextuid="`${PWCMD} usernext | cut -f1 -d:`"
  60         else
  61                 while : ; do
  62                         ${PWCMD} usershow $_uid > /dev/null 2>&1
  63                         if [ ! "$?" -eq 0 ]; then
  64                                 _nextuid=$_uid
  65                                 break
  66                         fi
  67                         _uid=$(($_uid + 1))
  68                 done
  69         fi
  70         echo $_nextuid
  71 }
  72
  73 # show_usage
  74 #       Display usage information for this utility.
  75 #
  76 show_usage() {
  77         echo "usage: ${THISCMD} [options]"
  78         echo "  options may include:"
  79         echo "  -C              save to the configuration file only"
  80         echo "  -D              do not attempt to create the home directory"
  81         echo "  -E              disable this account after creation"
  82         echo "  -G              additional groups to add accounts to"
  83         echo "  -L              login class of the user"
  84         echo "  -N              do not read configuration file"
  85         echo "  -S              a nonexistent shell is not an error"
  86         echo "  -d              home directory"
  87         echo "  -f              file from which input will be received"
  88         echo "  -g              default login group"
  89         echo "  -h              display this usage message"
  90         echo "  -k              path to skeleton home directory"
  91         echo "  -m              user welcome message file"
  92         echo "  -q              absolute minimal user feedback"
  93         echo "  -s              shell"
  94         echo "  -u              uid to start at"
  95         echo "  -w              password type: no, none, yes or random"
  96 }
  97
  98 # valid_shells
  99 #       Outputs a list of valid shells from /etc/shells. Only the
 100 #       basename of the shell is output.
 101 #
 102 valid_shells() {
 103         _prefix=
 104         cat ${ETCSHELLS} |
 105         while read _path _junk ; do
 106                 case $_path in
 107                 \#*|'')
 108                         ;;
 109                 *)
 110                         echo -n "${_prefix}`basename $_path`"
 111                         _prefix=' '
 112                         ;;
 113                 esac
 114         done
 115
 116         # /usr/sbin/nologin is a special case
 117         [ -x "${NOLOGIN_PATH}" ] && echo -n " ${NOLOGIN}"
 118 }
 119
 120 # fullpath_from_shell shell
 121 #       Given $shell, which is either the full path to a shell or
 122 #       the basename component of a valid shell, get the
 123 #       full path to the shell from the /etc/shells file.
 124 #
 125 fullpath_from_shell() {
 126         _shell=$1
 127         [ -z "$_shell" ] && return 1
 128
 129         # /usr/sbin/nologin is a special case; it needs to be handled
 130         # before the cat | while loop, since a 'return' from within
 131         # a subshell will not terminate the function's execution, and
 132         # the path to the nologin shell might be printed out twice.
 133         #
 134         if [ "$_shell" = "${NOLOGIN}" -o \
 135             "$_shell" = "${NOLOGIN_PATH}" ]; then
 136                 echo ${NOLOGIN_PATH}
 137                 return 0;
 138         fi
 139
 140         cat ${ETCSHELLS} |
 141         while read _path _junk ; do
 142                 case "$_path" in
 143                 \#*|'')
 144                         ;;
 145                 *)
 146                         if [ "$_path" = "$_shell" -o \
 147                             "`basename $_path`" = "$_shell" ]; then
 148                                 echo $_path
 149                                 return 0
 150                         fi
 151                         ;;
 152                 esac
 153         done
 154
 155         return 1
 156 }
 157
 158 # shell_exists shell
 159 #       If the given shell is listed in ${ETCSHELLS} or it is
 160 #       the nologin shell this function will return 0.
 161 #       Otherwise, it will return 1. If shell is valid but
 162 #       the path is invalid or it is not executable it
 163 #       will emit an informational message saying so.
 164 #
 165 shell_exists()
 166 {
 167         _sh="$1"
 168         _shellchk="${GREPCMD} '^$_sh$' ${ETCSHELLS} > /dev/null 2>&1"
 169
 170         if ! eval $_shellchk; then
 171                 # The nologin shell is not listed in /etc/shells.
 172                 if [ "$_sh" != "${NOLOGIN_PATH}" ]; then
 173                         err "Invalid shell ($_sh) for user $username."
 174                         return 1
 175                 fi
 176         fi
 177         ! [ -x "$_sh" ] &&
 178             info "The shell ($_sh) does not exist or is not executable."
 179
 180         return 0
 181 }
 182
 183 # save_config
 184 #       Save some variables to a configuration file.
 185 #       Note: not all script variables are saved, only those that
 186 #             it makes sense to save.
 187 #
 188 save_config() {
 189         echo "# Configuration file for adduser(8)."     >  ${ADDUSERCONF}
 190         echo "# NOTE: only *some* variables are saved." >> ${ADDUSERCONF}
 191         echo "# Last Modified on `${DATECMD}`."         >> ${ADDUSERCONF}
 192         echo ''                         >> ${ADDUSERCONF}
 193         echo "defaultLgroup=$ulogingroup" >> ${ADDUSERCONF}
 194         echo "defaultclass=$uclass"     >> ${ADDUSERCONF}
 195         echo "defaultgroups=$ugroups"   >> ${ADDUSERCONF}
 196         echo "passwdtype=$passwdtype"   >> ${ADDUSERCONF}
 197         echo "homeprefix=$homeprefix"   >> ${ADDUSERCONF}
 198         echo "defaultshell=$ushell"     >> ${ADDUSERCONF}
 199         echo "udotdir=$udotdir"         >> ${ADDUSERCONF}
 200         echo "msgfile=$msgfile"         >> ${ADDUSERCONF}
 201         echo "disableflag=$disableflag" >> ${ADDUSERCONF}
 202         echo "uidstart=$uidstart"       >> ${ADDUSERCONF}
 203 }
 204
 205 # add_user
 206 #       Add a user to the user database. If the user chose to send a welcome
 207 #       message or lock the account, do so.
 208 #
 209 add_user() {
 210
 211         # Is this a configuration run? If so, don't modify user database.
 212         #
 213         if [ -n "$configflag" ]; then
 214                 save_config
 215                 return
 216         fi
 217
 218         _uid=
 219         _name=
 220         _comment=
 221         _gecos=
 222         _home=
 223         _group=
 224         _grouplist=
 225         _shell=
 226         _class=
 227         _dotdir=
 228         _expire=
 229         _pwexpire=
 230         _passwd=
 231         _upasswd=
 232         _passwdmethod=
 233
 234         _name="-n '$username'"
 235         [ -n "$uuid" ] && _uid='-u "$uuid"'
 236         [ -n "$ulogingroup" ] && _group='-g "$ulogingroup"'
 237         [ -n "$ugroups" ] && _grouplist='-G "$ugroups"'
 238         [ -n "$ushell" ] && _shell='-s "$ushell"'
 239         [ -n "$uclass" ] && _class='-L "$uclass"'
 240         [ -n "$ugecos" ] && _comment='-c "$ugecos"'
 241         [ -n "$udotdir" ] && _dotdir='-k "$udotdir"'
 242         [ -n "$uexpire" ] && _expire='-e "$uexpire"'
 243         [ -n "$upwexpire" ] && _pwexpire='-p "$upwexpire"'
 244         if [ -z "$Dflag" -a -n "$uhome" ]; then
 245                 # The /nonexistent home directory is special. It
 246                 # means the user has no home directory.
 247                 if [ "$uhome" = "$NOHOME" ]; then
 248                         _home='-d "$uhome"'
 249                 else
 250                         _home='-m -d "$uhome"'
 251                 fi
 252         elif [ -n "$Dflag" -a -n "$uhome" ]; then
 253                 _home='-d "$uhome"'
 254         fi
 255         case $passwdtype in
 256         no)
 257                 _passwdmethod="-w no"
 258                 _passwd="-h -"
 259                 ;;
 260         yes)
 261                 # Note on processing the password: The outer double quotes
 262                 # make literal everything except ` and \ and $.
 263                 # The outer single quotes make literal ` and $.
 264                 # We can ensure the \ isn't treated specially by specifying
 265                 # the -r switch to the read command used to obtain the input.
 266                 #
 267                 _passwdmethod="-w yes"
 268                 _passwd="-h 0"
 269                 _upasswd='echo "$upass" |'
 270                 ;;
 271         none)
 272                 _passwdmethod="-w none"
 273                 ;;
 274         random)
 275                 _passwdmethod="-w random"
 276                 ;;
 277         esac
 278
 279         _pwcmd="$_upasswd ${PWCMD} useradd $_uid $_name $_group $_grouplist $_comment"
 280         _pwcmd="$_pwcmd $_shell $_class $_home $_dotdir $_passwdmethod $_passwd"
 281         _pwcmd="$_pwcmd $_expire $_pwexpire"
 282
 283         if ! _output=`eval $_pwcmd` ; then
 284                 err "There was an error adding user ($username)."
 285                 return 1
 286         else
 287                 info "Successfully added ($username) to the user database."
 288                 if [ "random" = "$passwdtype" ]; then
 289                         randompass="$_output"
 290                         info "Password for ($username) is: $randompass"
 291                 fi
 292         fi
 293
 294         if [ -n "$disableflag" ]; then
 295                 if ${PWCMD} lock $username ; then
 296                         info "Account ($username) is locked."
 297                 else
 298                         info "Account ($username) could NOT be locked."
 299                 fi
 300         fi
 301
 302         _line=
 303         _owner=
 304         _perms=
 305         if [ -n "$msgflag" ]; then
 306                 [ -r "$msgfile" ] && {
 307                         # We're evaluating the contents of an external file.
 308                         # Let's not open ourselves up for attack. _perms will
 309                         # be empty if it's writeable only by the owner. _owner
 310                         # will *NOT* be empty if the file is owned by root.
 311                         #
 312                         _dir="`dirname $msgfile`"
 313                         _file="`basename $msgfile`"
 314                         _perms=`/usr/bin/find $_dir -name $_file -perm +07022 -prune`
 315                         _owner=`/usr/bin/find $_dir -name $_file -user 0 -prune`
 316                         if [ -z "$_owner" -o -n "$_perms" ]; then
 317                                 err "The message file ($msgfile) may be writeable only by root."
 318                                 return 1
 319                         fi
 320                         cat "$msgfile" |
 321                         while read _line ; do
 322                                 eval echo "$_line"
 323                         done | ${MAILCMD} -s"Welcome" ${username}
 324                         info "Sent welcome message to ($username)."
 325                 }
 326         fi
 327 }
 328
 329 # get_user
 330 #       Reads username of the account from standard input or from a global
 331 #       variable containing an account line from a file. The username is
 332 #       required. If this is an interactive session it will prompt in
 333 #       a loop until a username is entered. If it is batch processing from
 334 #       a file it will output an error message and return to the caller.
 335 #
 336 get_user() {
 337         _input=
 338
 339         # No need to take down user names if this is a configuration saving run.
 340         [ -n "$configflag" ] && return
 341
 342         while : ; do
 343                 if [ -z "$fflag" ]; then
 344                         echo -n "Username: "
 345                         read _input
 346                 else
 347                         _input="`echo "$fileline" | cut -f1 -d:`"
 348                 fi
 349
 350                 # There *must* be a username, and it must not exist. If
 351                 # this is an interactive session give the user an
 352                 # opportunity to retry.
 353                 #
 354                 if [ -z "$_input" ]; then
 355                         err "You must enter a username!"
 356                         [ -z "$fflag" ] && continue
 357                 fi
 358                 ${PWCMD} usershow $_input > /dev/null 2>&1
 359                 if [ "$?" -eq 0 ]; then
 360                         err "User exists!"
 361                         [ -z "$fflag" ] && continue
 362                 fi
 363                 break
 364         done
 365         username="$_input"
 366 }
 367
 368 # get_gecos
 369 #       Reads extra information about the user. Can be used both in interactive
 370 #       and batch (from file) mode.
 371 #
 372 get_gecos() {
 373         _input=
 374
 375         # No need to take down additional user information for a configuration run.
 376         [ -n "$configflag" ] && return
 377
 378         if [ -z "$fflag" ]; then
 379                 echo -n "Full name: "
 380                 read _input
 381         else
 382                 _input="`echo "$fileline" | cut -f7 -d:`"
 383         fi
 384         ugecos="$_input"
 385 }
 386
 387 # get_shell
 388 #       Get the account's shell. Works in interactive and batch mode. It
 389 #       accepts either the base name of the shell or the full path.
 390 #       If an invalid shell is entered it will simply use the default shell.
 391 #
 392 get_shell() {
 393         _input=
 394         _fullpath=
 395         ushell="$defaultshell"
 396
 397         # Make sure the current value of the shell is a valid one
 398         if [ -z "$Sflag" ]; then
 399                 if ! shell_exists $ushell ; then
 400                         info "Using default shell ${defaultshell}."
 401                         ushell="$defaultshell"
 402                 fi
 403         fi
 404
 405         if [ -z "$fflag" ]; then
 406                 echo -n "Shell ($shells) [`basename $ushell`]: "
 407                 read _input
 408         else
 409                 _input="`echo "$fileline" | cut -f9 -d:`"
 410         fi
 411         if [ -n "$_input" ]; then
 412                 if [ -n "$Sflag" ]; then
 413                         ushell="$_input"
 414                 else
 415                         _fullpath=`fullpath_from_shell $_input`
 416                         if [ -n "$_fullpath" ]; then
 417                                 ushell="$_fullpath"
 418                         else
 419                                 err "Invalid shell ($_input) for user $username."
 420                                 info "Using default shell ${defaultshell}."
 421                                 ushell="$defaultshell"
 422                         fi
 423                 fi
 424         fi
 425 }
 426
 427 # get_homedir
 428 #       Reads the account's home directory. Used both with interactive input
 429 #       and batch input.
 430 #
 431 get_homedir() {
 432         _input=
 433         if [ -z "$fflag" ]; then
 434                 echo -n "Home directory [${homeprefix}/${username}]: "
 435                 read _input
 436         else
 437                 _input="`echo "$fileline" | cut -f8 -d:`"
 438         fi
 439
 440         if [ -n "$_input" ]; then
 441                 uhome="$_input"
 442                 # if this is a configuration run, then user input is the home
 443                 # directory prefix. Otherwise it is understood to
 444                 # be $prefix/$user
 445                 #
 446                 [ -z "$configflag" ] && homeprefix="`dirname $uhome`" || homeprefix="$uhome"
 447         else
 448                 uhome="${homeprefix}/${username}"
 449         fi
 450 }
 451
 452 # get_uid
 453 #       Reads a numeric userid in an interactive or batch session. Automatically
 454 #       allocates one if it is not specified.
 455 #
 456 get_uid() {
 457         uuid=${uidstart}
 458         _input=
 459         _prompt=
 460
 461         if [ -n "$uuid" ]; then
 462                 _prompt="Uid [$uuid]: "
 463         else
 464                 _prompt="Uid (Leave empty for default): "
 465         fi
 466         if [ -z "$fflag" ]; then
 467                 echo -n "$_prompt"
 468                 read _input
 469         else
 470                 _input="`echo "$fileline" | cut -f2 -d:`"
 471         fi
 472
 473         [ -n "$_input" ] && uuid=$_input
 474         uuid=`get_nextuid $uuid`
 475         uidstart=$uuid
 476 }
 477
 478 # get_class
 479 #       Reads login class of account. Can be used in interactive or batch mode.
 480 #
 481 get_class() {
 482         uclass="$defaultclass"
 483         _input=
 484         _class=${uclass:-"default"}
 485
 486         if [ -z "$fflag" ]; then
 487                 echo -n "Login class [$_class]: "
 488                 read _input
 489         else
 490                 _input="`echo "$fileline" | cut -f4 -d:`"
 491         fi
 492
 493         [ -n "$_input" ] && uclass="$_input"
 494 }
 495
 496 # get_logingroup
 497 #       Reads user's login group. Can be used in both interactive and batch
 498 #       modes. The specified value can be a group name or its numeric id.
 499 #       This routine leaves the field blank if nothing is provided and
 500 #       a default login group has not been set. The pw(8) command
 501 #       will then provide a login group with the same name as the username.
 502 #
 503 get_logingroup() {
 504         ulogingroup="$defaultLgroup"
 505         _input=
 506
 507         if [ -z "$fflag" ]; then
 508                 echo -n "Login group [${ulogingroup:-$username}]: "
 509                 read _input
 510         else
 511                 _input="`echo "$fileline" | cut -f3 -d:`"
 512         fi
 513
 514         # Pw(8) will use the username as login group if it's left empty
 515         [ -n "$_input" ] && ulogingroup="$_input"
 516 }
 517
 518 # get_groups
 519 #       Read additional groups for the user. It can be used in both interactive
 520 #       and batch modes.
 521 #
 522 get_groups() {
 523         ugroups="$defaultgroups"
 524         _input=
 525         _group=${ulogingroup:-"${username}"}
 526
 527         if [ -z "$configflag" ]; then
 528                 [ -z "$fflag" ] && echo -n "Login group is $_group. Invite $username"
 529                 [ -z "$fflag" ] && echo -n " into other groups? [$ugroups]: "
 530         else
 531                 [ -z "$fflag" ] && echo -n "Enter additional groups [$ugroups]: "
 532         fi
 533         read _input
 534
 535         [ -n "$_input" ] && ugroups="$_input"
 536 }
 537
 538 # get_expire_dates
 539 #       Read expiry information for the account and also for the password. This
 540 #       routine is used only from batch processing mode.
 541 #
 542 get_expire_dates() {
 543         upwexpire="`echo "$fileline" | cut -f5 -d:`"
 544         uexpire="`echo "$fileline" | cut -f6 -d:`"
 545 }
 546
 547 # get_password
 548 #       Read the password in batch processing mode. The password field matters
 549 #       only when the password type is "yes" or "random". If the field is empty and the
 550 #       password type is "yes", then it assumes the account has an empty passsword
 551 #       and changes the password type accordingly. If the password type is "random"
 552 #       and the password field is NOT empty, then it assumes the account will NOT
 553 #       have a random password and set passwdtype to "yes."
 554 #
 555 get_password() {
 556         # We may temporarily change a password type. Make sure it's changed
 557         # back to whatever it was before we process the next account.
 558         #
 559         [ -n "$savedpwtype" ] && {
 560                 passwdtype=$savedpwtype
 561                 savedpwtype=
 562         }
 563
 564         # There may be a ':' in the password
 565         upass=${fileline#*:*:*:*:*:*:*:*:*:}
 566
 567         if [ -z "$upass" ]; then
 568                 case $passwdtype in
 569                 yes)
 570                         # if it's empty, assume an empty password
 571                         passwdtype=none
 572                         savedpwtype=yes
 573                         ;;
 574                 esac
 575         else
 576                 case $passwdtype in
 577                 random)
 578                         passwdtype=yes
 579                         savedpwtype=random
 580                         ;;
 581                 esac
 582         fi
 583 }
 584
 585 # input_from_file
 586 #       Reads a line of account information from standard input and
 587 #       adds it to the user database.
 588 #
 589 input_from_file() {
 590         _field=
 591
 592         while read -r fileline ; do
 593                 case "$fileline" in
 594                 \#*|'')
 595                         ;;
 596                 *)
 597                         get_user || continue
 598                         get_gecos
 599                         get_uid
 600                         get_logingroup
 601                         get_class
 602                         get_shell
 603                         get_homedir
 604                         get_password
 605                         get_expire_dates
 606
 607                         add_user
 608                         ;;
 609                 esac
 610         done
 611 }
 612
 613 # input_interactive
 614 #       Prompts for user information interactively, and commits to
 615 #       the user database.
 616 #
 617 input_interactive() {
 618
 619         _disable=
 620         _pass=
 621         _passconfirm=
 622         _random="no"
 623         _emptypass="no"
 624         _usepass="yes"
 625         _logingroup_ok="no"
 626         _groups_ok="no"
 627         case $passwdtype in
 628         none)
 629                 _emptypass="yes"
 630                 _usepass="yes"
 631                 ;;
 632         no)
 633                 _usepass="no"
 634                 ;;
 635         random)
 636                 _random="yes"
 637                 ;;
 638         esac
 639
 640         get_user
 641         get_gecos
 642         get_uid
 643
 644         # The case where group = user is handled elsewhere, so
 645         # validate any other groups the user is invited to.
 646         until [ "$_logingroup_ok" = yes ]; do
 647                 get_logingroup
 648                 _logingroup_ok=yes
 649                 if [ -n "$ulogingroup" -a "$username" != "$ulogingroup" ]; then
 650                         if ! ${PWCMD} show group $ulogingroup > /dev/null 2>&1; then
 651                                 echo "Group $ulogingroup does not exist!"
 652                                 _logingroup_ok=no
 653                         fi
 654                 fi
 655         done
 656         until [ "$_groups_ok" = yes ]; do
 657                 get_groups
 658                 _groups_ok=yes
 659                 for i in $ugroups; do
 660                         if [ "$username" != "$i" ]; then
 661                                 if ! ${PWCMD} show group $i > /dev/null 2>&1; then
 662                                         echo "Group $i does not exist!"
 663                                         _groups_ok=no
 664                                 fi
 665                         fi
 666                 done
 667         done
 668
 669         get_class
 670         get_shell
 671         get_homedir
 672
 673         while : ; do
 674                 echo -n "Use password-based authentication? [$_usepass]: "
 675                 read _input
 676                 [ -z "$_input" ] && _input=$_usepass
 677                 case $_input in
 678                 [Nn][Oo]|[Nn])
 679                         passwdtype="no"
 680                         ;;
 681                 [Yy][Ee][Ss]|[Yy][Ee]|[Yy])
 682                         while : ; do
 683                                 echo -n "Use an empty password? (yes/no) [$_emptypass]: "
 684                                 read _input
 685                                 [ -n "$_input" ] && _emptypass=$_input
 686                                 case $_emptypass in
 687                                 [Nn][Oo]|[Nn])
 688                                         echo -n "Use a random password? (yes/no) [$_random]: "
 689                                         read _input
 690                                         [ -n "$_input" ] && _random="$_input"
 691                                         case $_random in
 692                                         [Yy][Ee][Ss]|[Yy][Ee]|[Yy])
 693                                                 passwdtype="random"
 694                                                 break
 695                                                 ;;
 696                                         esac
 697                                         passwdtype="yes"
 698                                         [ -n "$configflag" ] && break
 699                                         trap 'stty echo; exit' 0 1 2 3 15
 700                                         stty -echo
 701                                         echo -n "Enter password: "
 702                                         read -r upass
 703                                         echo''
 704                                         echo -n "Enter password again: "
 705                                         read -r _passconfirm
 706                                         echo ''
 707                                         stty echo
 708                                         # if user entered a blank password
 709                                         # explicitly ask again.
 710                                         [ -z "$upass" -a -z "$_passconfirm" ] \
 711                                             && continue
 712                                         ;;
 713                                 [Yy][Ee][Ss]|[Yy][Ee]|[Yy])
 714                                         passwdtype="none"
 715                                         break;
 716                                         ;;
 717                                 *)
 718                                         # invalid answer; repeat the loop
 719                                         continue
 720                                         ;;
 721                                 esac
 722                                 if [ "$upass" != "$_passconfirm" ]; then
 723                                         echo "Passwords did not match!"
 724                                         continue
 725                                 fi
 726                                 break
 727                         done
 728                         ;;
 729                 *)
 730                         # invalid answer; repeat loop
 731                         continue
 732                         ;;
 733                 esac
 734                 break;
 735         done
 736         _disable=${disableflag:-"no"}
 737         while : ; do
 738                 echo -n "Lock out the account after creation? [$_disable]: "
 739                 read _input
 740                 [ -z "$_input" ] && _input=$_disable
 741                 case $_input in
 742                 [Nn][Oo]|[Nn])
 743                         disableflag=
 744                         ;;
 745                 [Yy][Ee][Ss]|[Yy][Ee]|[Yy])
 746                         disableflag=yes
 747                         ;;
 748                 *)
 749                         # invalid answer; repeat loop
 750                         continue
 751                         ;;
 752                 esac
 753                 break
 754         done
 755
 756         # Display the information we have so far and prompt to
 757         # commit it.
 758         #
 759         _disable=${disableflag:-"no"}
 760         [ -z "$configflag" ] && printf "%-10s : %s\n" Username $username
 761         case $passwdtype in
 762         yes)
 763                 _pass='*****'
 764                 ;;
 765         no)
 766                 _pass='<disabled>'
 767                 ;;
 768         none)
 769                 _pass='<blank>'
 770                 ;;
 771         random)
 772                 _pass='<random>'
 773                 ;;
 774         esac
 775         [ -z "$configflag" ] && printf "%-10s : %s\n" "Password" "$_pass"
 776         [ -n "$configflag" ] && printf "%-10s : %s\n" "Pass Type" "$passwdtype"
 777         [ -z "$configflag" ] && printf "%-10s : %s\n" "Full Name" "$ugecos"
 778         [ -z "$configflag" ] && printf "%-10s : %s\n" "Uid" "$uuid"
 779         printf "%-10s : %s\n" "Class" "$uclass"
 780         printf "%-10s : %s %s\n" "Groups" "${ulogingroup:-$username}" "$ugroups"
 781         printf "%-10s : %s\n" "Home" "$uhome"
 782         printf "%-10s : %s\n" "Shell" "$ushell"
 783         printf "%-10s : %s\n" "Locked" "$_disable"
 784         while : ; do
 785                 echo -n "OK? (yes/no): "
 786                 read _input
 787                 case $_input in
 788                 [Nn][Oo]|[Nn])
 789                         return 1
 790                         ;;
 791                 [Yy][Ee][Ss]|[Yy][Ee]|[Yy])
 792                         add_user
 793                         ;;
 794                 *)
 795                         continue
 796                         ;;
 797                 esac
 798                 break
 799         done
 800         return 0
 801 }
 802
 803 #### END SUBROUTINE DEFINITION ####
 804
 805 THISCMD=`/usr/bin/basename $0`
 806 DEFAULTSHELL=/bin/sh
 807 ADDUSERCONF="${ADDUSERCONF:-/etc/adduser.conf}"
 808 PWCMD="${PWCMD:-/usr/sbin/pw}"
 809 MAILCMD="${MAILCMD:-mail}"
 810 ETCSHELLS="${ETCSHELLS:-/etc/shells}"
 811 NOHOME="/nonexistent"
 812 NOLOGIN="nologin"
 813 NOLOGIN_PATH="/usr/sbin/nologin"
 814 GREPCMD="/usr/bin/grep"
 815 DATECMD="/bin/date"
 816
 817 # Set default values
 818 #
 819 username=
 820 uuid=
 821 uidstart=
 822 ugecos=
 823 ulogingroup=
 824 uclass=
 825 uhome=
 826 upass=
 827 ushell=
 828 udotdir=/usr/share/skel
 829 ugroups=
 830 uexpire=
 831 upwexpire=
 832 shells="`valid_shells`"
 833 passwdtype="yes"
 834 msgfile=/etc/adduser.msg
 835 msgflag=
 836 quietflag=
 837 configflag=
 838 fflag=
 839 infile=
 840 disableflag=
 841 Dflag=
 842 Sflag=
 843 readconfig="yes"
 844 homeprefix="/home"
 845 randompass=
 846 fileline=
 847 savedpwtype=
 848 defaultclass=
 849 defaultLgroup=
 850 defaultgroups=
 851 defaultshell="${DEFAULTSHELL}"
 852
 853 # Make sure the user running this program is root. This isn't a security
 854 # measure as much as it is a usefull method of reminding the user to
 855 # 'su -' before he/she wastes time entering data that won't be saved.
 856 #
 857 procowner=${procowner:-`/usr/bin/id -u`}
 858 if [ "$procowner" != "0" ]; then
 859         err 'you must be the super-user (uid 0) to use this utility.'
 860         exit 1
 861 fi
 862
 863 # Overide from our conf file
 864 # Quickly go through the commandline line to see if we should read
 865 # from our configuration file. The actual parsing of the commandline
 866 # arguments happens after we read in our configuration file (commandline
 867 # should override configuration file).
 868 #
 869 for _i in $* ; do
 870         if [ "$_i" = "-N" ]; then
 871                 readconfig=
 872                 break;
 873         fi
 874 done
 875 if [ -n "$readconfig" ]; then
 876         # On a long-lived system, the first time this script is run it
 877         # will barf upon reading the configuration file for its perl predecessor.
 878         if ( . ${ADDUSERCONF} > /dev/null 2>&1 ); then
 879                 [ -r ${ADDUSERCONF} ] && . ${ADDUSERCONF} > /dev/null 2>&1
 880         fi
 881 fi
 882
 883 # Proccess command-line options
 884 #
 885 for _switch ; do
 886         case $_switch in
 887         -L)
 888                 defaultclass="$2"
 889                 shift; shift
 890                 ;;
 891         -C)
 892                 configflag=yes
 893                 shift
 894                 ;;
 895         -D)
 896                 Dflag=yes
 897                 shift
 898                 ;;
 899         -E)
 900                 disableflag=yes
 901                 shift
 902                 ;;
 903         -k)
 904                 udotdir="$2"
 905                 shift; shift
 906                 ;;
 907         -f)
 908                 [ "$2" != "-" ] && infile="$2"
 909                 fflag=yes
 910                 shift; shift
 911                 ;;
 912         -g)
 913                 defaultLgroup="$2"
 914                 shift; shift
 915                 ;;
 916         -G)
 917                 defaultgroups="$2"
 918                 shift; shift
 919                 ;;
 920         -h)
 921                 show_usage
 922                 exit 0
 923                 ;;
 924         -d)
 925                 homeprefix="$2"
 926                 shift; shift
 927                 ;;
 928         -m)
 929                 case "$2" in
 930                 [Nn][Oo])
 931                         msgflag=
 932                         ;;
 933                 *)
 934                         msgflag=yes
 935                         msgfile="$2"
 936                         ;;
 937                 esac
 938                 shift; shift
 939                 ;;
 940         -N)
 941                 readconfig=
 942                 shift
 943                 ;;
 944         -w)
 945                 case "$2" in
 946                 no|none|random|yes)
 947                         passwdtype=$2
 948                         ;;
 949                 *)
 950                         show_usage
 951                         exit 1
 952                         ;;
 953                 esac
 954                 shift; shift
 955                 ;;
 956         -q)
 957                 quietflag=yes
 958                 shift
 959                 ;;
 960         -s)
 961                 defaultshell="`fullpath_from_shell $2`"
 962                 shift; shift
 963                 ;;
 964         -S)
 965                 Sflag=yes
 966                 shift
 967                 ;;
 968         -u)
 969                 uidstart=$2
 970                 shift; shift
 971                 ;;
 972         esac
 973 done
 974
 975 # If the -f switch was used, get input from a file. Otherwise,
 976 # this is an interactive session.
 977 #
 978 if [ -n "$fflag" ]; then
 979         if [ -z "$infile" ]; then
 980                 input_from_file
 981         elif [ -n "$infile" ]; then
 982                 if [ -r "$infile" ]; then
 983                         input_from_file < $infile
 984                 else
 985                         err "File ($infile) is unreadable or does not exist."
 986                 fi
 987         fi
 988 else
 989         input_interactive
 990         while : ; do
 991                 if [ -z "$configflag" ]; then
 992                         echo -n "Add another user? (yes/no): "
 993                 else
 994                         echo -n "Re-edit the default configuration? (yes/no): "
 995                 fi
 996                 read _input
 997                 case $_input in
 998                 [Yy][Ee][Ss]|[Yy][Ee]|[Yy])
 999                         uidstart=`get_nextuid $uidstart`
1000                         input_interactive
1001                         continue
1002                         ;;
1003                 [Nn][Oo]|[Nn])
1004                         echo "Goodbye!"
1005                         ;;
1006                 *)
1007                         continue
1008                         ;;
1009                 esac
1010                 break
1011         done
1012 fi