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" >> ${ADDUSERCONF}
 202 }
 203
 204 # add_user
 205 #       Add a user to the user database. If the user chose to send a welcome
 206 #       message or lock the account, do so.
 207 #
 208 add_user() {
 209
 210         # Is this a configuration run? If so, don't modify user database.
 211         #
 212         if [ -n "$configflag" ]; then
 213                 save_config
 214                 return
 215         fi
 216
 217         _uid=
 218         _name=
 219         _comment=
 220         _gecos=
 221         _home=
 222         _group=
 223         _grouplist=
 224         _shell=
 225         _class=
 226         _dotdir=
 227         _expire=
 228         _pwexpire=
 229         _passwd=
 230         _upasswd=
 231         _passwdmethod=
 232
 233         _name="-n '$username'"
 234         [ -n "$uuid" ] && _uid='-u "$uuid"'
 235         [ -n "$ulogingroup" ] && _group='-g "$ulogingroup"'
 236         [ -n "$ugroups" ] && _grouplist='-G "$ugroups"'
 237         [ -n "$ushell" ] && _shell='-s "$ushell"'
 238         [ -n "$uclass" ] && _class='-L "$uclass"'
 239         [ -n "$ugecos" ] && _comment='-c "$ugecos"'
 240         [ -n "$udotdir" ] && _dotdir='-k "$udotdir"'
 241         [ -n "$uexpire" ] && _expire='-e "$uexpire"'
 242         [ -n "$upwexpire" ] && _pwexpire='-p "$upwexpire"'
 243         if [ -z "$Dflag" -a -n "$uhome" ]; then
 244                 # The /nonexistent home directory is special. It
 245                 # means the user has no home directory.
 246                 if [ "$uhome" = "$NOHOME" ]; then
 247                         _home='-d "$uhome"'
 248                 else
 249                         _home='-m -d "$uhome"'
 250                 fi
 251         elif [ -n "$Dflag" -a -n "$uhome" ]; then
 252                 _home='-d "$uhome"'
 253         fi
 254         case $passwdtype in
 255         no)
 256                 _passwdmethod="-w no"
 257                 _passwd="-h -"
 258                 ;;
 259         yes)
 260                 # Note on processing the password: The outer double quotes
 261                 # make literal everything except ` and \ and $.
 262                 # The outer single quotes make literal ` and $.
 263                 # We can ensure the \ isn't treated specially by specifying
 264                 # the -r switch to the read command used to obtain the input.
 265                 #
 266                 _passwdmethod="-w yes"
 267                 _passwd="-h 0"
 268                 _upasswd='echo "$upass" |'
 269                 ;;
 270         none)
 271                 _passwdmethod="-w none"
 272                 ;;
 273         random)
 274                 _passwdmethod="-w random"
 275                 ;;
 276         esac
 277
 278         _pwcmd="$_upasswd ${PWCMD} useradd $_uid $_name $_group $_grouplist $_comment"
 279         _pwcmd="$_pwcmd $_shell $_class $_home $_dotdir $_passwdmethod $_passwd"
 280         _pwcmd="$_pwcmd $_expire $_pwexpire"
 281
 282         if ! _output=`eval $_pwcmd` ; then
 283                 err "There was an error adding user ($username)."
 284                 return 1
 285         else
 286                 info "Successfully added ($username) to the user database."
 287                 if [ "random" = "$passwdtype" ]; then
 288                         randompass="$_output"
 289                         info "Password for ($username) is: $randompass"
 290                 fi
 291         fi
 292
 293         if [ -n "$disableflag" ]; then
 294                 if ${PWCMD} lock $username ; then
 295                         info "Account ($username) is locked."
 296                 else
 297                         info "Account ($username) could NOT be locked."
 298                 fi
 299         fi
 300
 301         _line=
 302         _owner=
 303         _perms=
 304         if [ -n "$msgflag" ]; then
 305                 [ -r "$msgfile" ] && {
 306                         # We're evaluating the contents of an external file.
 307                         # Let's not open ourselves up for attack. _perms will
 308                         # be empty if it's writeable only by the owner. _owner
 309                         # will *NOT* be empty if the file is owned by root.
 310                         #
 311                         _dir="`dirname $msgfile`"
 312                         _file="`basename $msgfile`"
 313                         _perms=`/usr/bin/find $_dir -name $_file -perm +07022 -prune`
 314                         _owner=`/usr/bin/find $_dir -name $_file -user 0 -prune`
 315                         if [ -z "$_owner" -o -n "$_perms" ]; then
 316                                 err "The message file ($msgfile) may be writeable only by root."
 317                                 return 1
 318                         fi
 319                         cat "$msgfile" |
 320                         while read _line ; do
 321                                 eval echo "$_line"
 322                         done | ${MAILCMD} -s"Welcome" ${username}
 323                         info "Sent welcome message to ($username)."
 324                 }
 325         fi
 326 }
 327
 328 # get_user
 329 #       Reads username of the account from standard input or from a global
 330 #       variable containing an account line from a file. The username is
 331 #       required. If this is an interactive session it will prompt in
 332 #       a loop until a username is entered. If it is batch processing from
 333 #       a file it will output an error message and return to the caller.
 334 #
 335 get_user() {
 336         _input=
 337
 338         # No need to take down user names if this is a configuration saving run.
 339         [ -n "$configflag" ] && return
 340
 341         while : ; do
 342                 if [ -z "$fflag" ]; then
 343                         echo -n "Username: "
 344                         read _input
 345                 else
 346                         _input="`echo "$fileline" | cut -f1 -d:`"
 347                 fi
 348
 349                 # There *must* be a username. If this is an interactive
 350                 # session give the user an opportunity to retry.
 351                 #
 352                 if [ -z "$_input" ]; then
 353                         err "You must enter a username!"
 354                         [ -z "$fflag" ] && continue
 355                 fi
 356                 break
 357         done
 358         username="$_input"
 359 }
 360
 361 # get_gecos
 362 #       Reads extra information about the user. Can be used both in interactive
 363 #       and batch (from file) mode.
 364 #
 365 get_gecos() {
 366         _input=
 367
 368         # No need to take down additional user information for a configuration run.
 369         [ -n "$configflag" ] && return
 370
 371         if [ -z "$fflag" ]; then
 372                 echo -n "Full name: "
 373                 read _input
 374         else
 375                 _input="`echo "$fileline" | cut -f7 -d:`"
 376         fi
 377         ugecos="$_input"
 378 }
 379
 380 # get_shell
 381 #       Get the account's shell. Works in interactive and batch mode. It
 382 #       accepts either the base name of the shell or the full path.
 383 #       If an invalid shell is entered it will simply use the default shell.
 384 #
 385 get_shell() {
 386         _input=
 387         _fullpath=
 388         ushell="$defaultshell"
 389
 390         # Make sure the current value of the shell is a valid one
 391         if [ -z "$Sflag" ]; then
 392                 if ! shell_exists $ushell ; then
 393                         info "Using default shell ${defaultshell}."
 394                         ushell="$defaultshell"
 395                 fi
 396         fi
 397
 398         if [ -z "$fflag" ]; then
 399                 echo -n "Shell ($shells) [`basename $ushell`]: "
 400                 read _input
 401         else
 402                 _input="`echo "$fileline" | cut -f9 -d:`"
 403         fi
 404         if [ -n "$_input" ]; then
 405                 if [ -n "$Sflag" ]; then
 406                         ushell="$_input"
 407                 else
 408                         _fullpath=`fullpath_from_shell $_input`
 409                         if [ -n "$_fullpath" ]; then
 410                                 ushell="$_fullpath"
 411                         else
 412                                 err "Invalid shell ($_input) for user $username."
 413                                 info "Using default shell ${defaultshell}."
 414                                 ushell="$defaultshell"
 415                         fi
 416                 fi
 417         fi
 418 }
 419
 420 # get_homedir
 421 #       Reads the account's home directory. Used both with interactive input
 422 #       and batch input.
 423 #
 424 get_homedir() {
 425         _input=
 426         if [ -z "$fflag" ]; then
 427                 echo -n "Home directory [${homeprefix}/${username}]: "
 428                 read _input
 429         else
 430                 _input="`echo "$fileline" | cut -f8 -d:`"
 431         fi
 432
 433         if [ -n "$_input" ]; then
 434                 uhome="$_input"
 435                 # if this is a configuration run, then user input is the home
 436                 # directory prefix. Otherwise it is understood to
 437                 # be $prefix/$user
 438                 #
 439                 [ -z "$configflag" ] && homeprefix="`dirname $uhome`" || homeprefix="$uhome"
 440         else
 441                 uhome="${homeprefix}/${username}"
 442         fi
 443 }
 444
 445 # get_uid
 446 #       Reads a numeric userid in an interactive or batch session. Automatically
 447 #       allocates one if it is not specified.
 448 #
 449 get_uid() {
 450         uuid=${uidstart}
 451         _input=
 452         _prompt=
 453
 454         # No need to take down uids for a configuration saving run.
 455         [ -n "$configflag" ] && return
 456
 457         if [ -n "$uuid" ]; then
 458                 _prompt="Uid [$uuid]: "
 459         else
 460                 _prompt="Uid (Leave empty for default): "
 461         fi
 462         if [ -z "$fflag" ]; then
 463                 echo -n "$_prompt"
 464                 read _input
 465         else
 466                 _input="`echo "$fileline" | cut -f2 -d:`"
 467         fi
 468
 469         [ -n "$_input" ] && uuid=$_input
 470         uuid=`get_nextuid $uuid`
 471         uidstart=$uuid
 472 }
 473
 474 # get_class
 475 #       Reads login class of account. Can be used in interactive or batch mode.
 476 #
 477 get_class() {
 478         uclass="$defaultclass"
 479         _input=
 480         _class=${uclass:-"default"}
 481
 482         if [ -z "$fflag" ]; then
 483                 echo -n "Login class [$_class]: "
 484                 read _input
 485         else
 486                 _input="`echo "$fileline" | cut -f4 -d:`"
 487         fi
 488
 489         [ -n "$_input" ] && uclass="$_input"
 490 }
 491
 492 # get_logingroup
 493 #       Reads user's login group. Can be used in both interactive and batch
 494 #       modes. The specified value can be a group name or its numeric id.
 495 #       This routine leaves the field blank if nothing is provided and
 496 #       a default login group has not been set. The pw(8) command
 497 #       will then provide a login group with the same name as the username.
 498 #
 499 get_logingroup() {
 500         ulogingroup="$defaultLgroup"
 501         _input=
 502
 503         if [ -z "$fflag" ]; then
 504                 echo -n "Login group [${ulogingroup:-$username}]: "
 505                 read _input
 506         else
 507                 _input="`echo "$fileline" | cut -f3 -d:`"
 508         fi
 509
 510         # Pw(8) will use the username as login group if it's left empty
 511         [ -n "$_input" ] && ulogingroup="$_input"
 512 }
 513
 514 # get_groups
 515 #       Read additional groups for the user. It can be used in both interactive
 516 #       and batch modes.
 517 #
 518 get_groups() {
 519         ugroups="$defaultgroups"
 520         _input=
 521         _group=${ulogingroup:-"${username}"}
 522
 523         if [ -z "$configflag" ]; then
 524                 [ -z "$fflag" ] && echo -n "Login group is $_group. Invite $username"
 525                 [ -z "$fflag" ] && echo -n " into other groups? [$ugroups]: "
 526         else
 527                 [ -z "$fflag" ] && echo -n "Enter additional groups [$ugroups]: "
 528         fi
 529         read _input
 530
 531         [ -n "$_input" ] && ugroups="$_input"
 532 }
 533
 534 # get_expire_dates
 535 #       Read expiry information for the account and also for the password. This
 536 #       routine is used only from batch processing mode.
 537 #
 538 get_expire_dates() {
 539         upwexpire="`echo "$fileline" | cut -f5 -d:`"
 540         uexpire="`echo "$fileline" | cut -f6 -d:`"
 541 }
 542
 543 # get_password
 544 #       Read the password in batch processing mode. The password field matters
 545 #       only when the password type is "yes" or "random". If the field is empty and the
 546 #       password type is "yes", then it assumes the account has an empty passsword
 547 #       and changes the password type accordingly. If the password type is "random"
 548 #       and the password field is NOT empty, then it assumes the account will NOT
 549 #       have a random password and set passwdtype to "yes."
 550 #
 551 get_password() {
 552         # We may temporarily change a password type. Make sure it's changed
 553         # back to whatever it was before we process the next account.
 554         #
 555         [ -n "$savedpwtype" ] && {
 556                 passwdtype=$savedpwtype
 557                 savedpwtype=
 558         }
 559
 560         # There may be a ':' in the password
 561         upass=${fileline#*:*:*:*:*:*:*:*:*:}
 562
 563         if [ -z "$upass" ]; then
 564                 case $passwdtype in
 565                 yes)
 566                         # if it's empty, assume an empty password
 567                         passwdtype=none
 568                         savedpwtype=yes
 569                         ;;
 570                 esac
 571         else
 572                 case $passwdtype in
 573                 random)
 574                         passwdtype=yes
 575                         savedpwtype=random
 576                         ;;
 577                 esac
 578         fi
 579 }
 580
 581 # input_from_file
 582 #       Reads a line of account information from standard input and
 583 #       adds it to the user database.
 584 #
 585 input_from_file() {
 586         _field=
 587
 588         while read -r fileline ; do
 589                 case "$fileline" in
 590                 \#*|'')
 591                         return 0
 592                         ;;
 593                 esac
 594
 595                 get_user || continue
 596                 get_gecos
 597                 get_uid
 598                 get_logingroup
 599                 get_class
 600                 get_shell
 601                 get_homedir
 602                 get_password
 603                 get_expire_dates
 604
 605                 add_user
 606         done
 607 }
 608
 609 # input_interactive
 610 #       Prompts for user information interactively, and commits to
 611 #       the user database.
 612 #
 613 input_interactive() {
 614
 615         _disable=
 616         _pass=
 617         _passconfirm=
 618         _random="no"
 619         _emptypass="no"
 620         _usepass="yes"
 621         _logingroup_ok="no"
 622         _groups_ok="no"
 623         case $passwdtype in
 624         none)
 625                 _emptypass="yes"
 626                 _usepass="yes"
 627                 ;;
 628         no)
 629                 _usepass="no"
 630                 ;;
 631         random)
 632                 _random="yes"
 633                 ;;
 634         esac
 635
 636         get_user
 637         get_gecos
 638         get_uid
 639
 640         # The case where group = user is handled elsewhere, so
 641         # validate any other groups the user is invited to.
 642         until [ "$_logingroup_ok" = yes ]; do
 643                 get_logingroup
 644                 _logingroup_ok=yes
 645                 if [ -n "$ulogingroup" -a "$username" != "$ulogingroup" ]; then
 646                         if ! ${PWCMD} show group $ulogingroup > /dev/null 2>&1; then
 647                                 echo "Group $ulogingroup does not exist!"
 648                                 _logingroup_ok=no
 649                         fi
 650                 fi
 651         done
 652         until [ "$_groups_ok" = yes ]; do
 653                 get_groups
 654                 _groups_ok=yes
 655                 for i in $ugroups; do
 656                         if [ "$username" != "$i" ]; then
 657                                 if ! ${PWCMD} show group $i > /dev/null 2>&1; then
 658                                         echo "Group $i does not exist!"
 659                                         _groups_ok=no
 660                                 fi
 661                         fi
 662                 done
 663         done
 664
 665         get_class
 666         get_shell
 667         get_homedir
 668
 669         while : ; do
 670                 echo -n "Use password-based authentication? [$_usepass]: "
 671                 read _input
 672                 [ -z "$_input" ] && _input=$_usepass
 673                 case $_input in
 674                 [Nn][Oo]|[Nn])
 675                         passwdtype="no"
 676                         ;;
 677                 [Yy][Ee][Ss]|[Yy][Ee]|[Yy])
 678                         while : ; do
 679                                 echo -n "Use an empty password? (yes/no) [$_emptypass]: "
 680                                 read _input
 681                                 [ -n "$_input" ] && _emptypass=$_input
 682                                 case $_emptypass in
 683                                 [Nn][Oo]|[Nn])
 684                                         echo -n "Use a random password? (yes/no) [$_random]: "
 685                                         read _input
 686                                         [ -n "$_input" ] && _random="$_input"
 687                                         case $_random in
 688                                         [Yy][Ee][Ss]|[Yy][Ee]|[Yy])
 689                                                 passwdtype="random"
 690                                                 break
 691                                                 ;;
 692                                         esac
 693                                         passwdtype="yes"
 694                                         [ -n "$configflag" ] && break
 695                                         trap 'stty echo; exit' 0 1 2 3 15
 696                                         stty -echo
 697                                         echo -n "Enter password: "
 698                                         read -r upass
 699                                         echo''
 700                                         echo -n "Enter password again: "
 701                                         read -r _passconfirm
 702                                         echo ''
 703                                         stty echo
 704                                         # if user entered a blank password
 705                                         # explicitly ask again.
 706                                         [ -z "$upass" -a -z "$_passconfirm" ] \
 707                                             && continue
 708                                         ;;
 709                                 [Yy][Ee][Ss]|[Yy][Ee]|[Yy])
 710                                         passwdtype="none"
 711                                         break;
 712                                         ;;
 713                                 *)
 714                                         # invalid answer; repeat the loop
 715                                         continue
 716                                         ;;
 717                                 esac
 718                                 if [ "$upass" != "$_passconfirm" ]; then
 719                                         echo "Passwords did not match!"
 720                                         continue
 721                                 fi
 722                                 break
 723                         done
 724                         ;;
 725                 *)
 726                         # invalid answer; repeat loop
 727                         continue
 728                         ;;
 729                 esac
 730                 break;
 731         done
 732         _disable=${disableflag:-"no"}
 733         while : ; do
 734                 echo -n "Lock out the account after creation? [$_disable]: "
 735                 read _input
 736                 [ -z "$_input" ] && _input=$_disable
 737                 case $_input in
 738                 [Nn][Oo]|[Nn])
 739                         disableflag=
 740                         ;;
 741                 [Yy][Ee][Ss]|[Yy][Ee]|[Yy])
 742                         disableflag=yes
 743                         ;;
 744                 *)
 745                         # invalid answer; repeat loop
 746                         continue
 747                         ;;
 748                 esac
 749                 break
 750         done
 751
 752         # Display the information we have so far and prompt to
 753         # commit it.
 754         #
 755         _disable=${disableflag:-"no"}
 756         [ -z "$configflag" ] && printf "%-10s : %s\n" Username $username
 757         case $passwdtype in
 758         yes)
 759                 _pass='*****'
 760                 ;;
 761         no)
 762                 _pass='<disabled>'
 763                 ;;
 764         none)
 765                 _pass='<blank>'
 766                 ;;
 767         random)
 768                 _pass='<random>'
 769                 ;;
 770         esac
 771         [ -z "$configflag" ] && printf "%-10s : %s\n" "Password" "$_pass"
 772         [ -n "$configflag" ] && printf "%-10s : %s\n" "Pass Type" "$passwdtype"
 773         [ -z "$configflag" ] && printf "%-10s : %s\n" "Full Name" "$ugecos"
 774         [ -z "$configflag" ] && printf "%-10s : %s\n" "Uid" "$uuid"
 775         printf "%-10s : %s\n" "Class" "$uclass"
 776         printf "%-10s : %s %s\n" "Groups" "${ulogingroup:-$username}" "$ugroups"
 777         printf "%-10s : %s\n" "Home" "$uhome"
 778         printf "%-10s : %s\n" "Shell" "$ushell"
 779         printf "%-10s : %s\n" "Locked" "$_disable"
 780         while : ; do
 781                 echo -n "OK? (yes/no): "
 782                 read _input
 783                 case $_input in
 784                 [Nn][Oo]|[Nn])
 785                         return 1
 786                         ;;
 787                 [Yy][Ee][Ss]|[Yy][Ee]|[Yy])
 788                         add_user
 789                         ;;
 790                 *)
 791                         continue
 792                         ;;
 793                 esac
 794                 break
 795         done
 796         return 0
 797 }
 798
 799 #### END SUBROUTINE DEFENITION ####
 800
 801 THISCMD=`/usr/bin/basename $0`
 802 DEFAULTSHELL=/bin/sh
 803 ADDUSERCONF="${ADDUSERCONF:-/etc/adduser.conf}"
 804 PWCMD="${PWCMD:-/usr/sbin/pw}"
 805 MAILCMD="${MAILCMD:-mail}"
 806 ETCSHELLS="${ETCSHELLS:-/etc/shells}"
 807 NOHOME="/nonexistent"
 808 NOLOGIN="nologin"
 809 NOLOGIN_PATH="/usr/sbin/nologin"
 810 GREPCMD="/usr/bin/grep"
 811 DATECMD="/bin/date"
 812
 813 # Set default values
 814 #
 815 username=
 816 uuid=
 817 uidstart=
 818 ugecos=
 819 ulogingroup=
 820 uclass=
 821 uhome=
 822 upass=
 823 ushell=
 824 udotdir=/usr/share/skel
 825 ugroups=
 826 uexpire=
 827 upwexpire=
 828 shells="`valid_shells`"
 829 passwdtype="yes"
 830 msgfile=/etc/adduser.msg
 831 msgflag=
 832 quietflag=
 833 configflag=
 834 fflag=
 835 infile=
 836 disableflag=
 837 Dflag=
 838 Sflag=
 839 readconfig="yes"
 840 homeprefix="/home"
 841 randompass=
 842 fileline=
 843 savedpwtype=
 844 defaultclass=
 845 defaultLgroup=
 846 defaultgroups=
 847 defaultshell="${DEFAULTSHELL}"
 848
 849 # Make sure the user running this program is root. This isn't a security
 850 # measure as much as it is a usefull method of reminding the user to
 851 # 'su -' before he/she wastes time entering data that won't be saved.
 852 #
 853 procowner=${procowner:-`/usr/bin/id -u`}
 854 if [ "$procowner" != "0" ]; then
 855         err 'you must be the super-user (uid 0) to use this utility.'
 856         exit 1
 857 fi
 858
 859 # Overide from our conf file
 860 # Quickly go through the commandline line to see if we should read
 861 # from our configuration file. The actual parsing of the commandline
 862 # arguments happens after we read in our configuration file (commandline
 863 # should override configuration file).
 864 #
 865 for _i in $* ; do
 866         if [ "$_i" = "-N" ]; then
 867                 readconfig=
 868                 break;
 869         fi
 870 done
 871 if [ -n "$readconfig" ]; then
 872         # On a long-lived system, the first time this script is run it
 873         # will barf upon reading the configuration file for its perl predecessor.
 874         if ( . ${ADDUSERCONF} > /dev/null 2>&1 ); then
 875                 [ -r ${ADDUSERCONF} ] && . ${ADDUSERCONF} > /dev/null 2>&1
 876         fi
 877 fi
 878
 879 # Proccess command-line options
 880 #
 881 for _switch ; do
 882         case $_switch in
 883         -L)
 884                 defaultclass="$2"
 885                 shift; shift
 886                 ;;
 887         -C)
 888                 configflag=yes
 889                 shift
 890                 ;;
 891         -D)
 892                 Dflag=yes
 893                 shift
 894                 ;;
 895         -E)
 896                 disableflag=yes
 897                 shift
 898                 ;;
 899         -k)
 900                 udotdir="$2"
 901                 shift; shift
 902                 ;;
 903         -f)
 904                 [ "$2" != "-" ] && infile="$2"
 905                 fflag=yes
 906                 shift; shift
 907                 ;;
 908         -g)
 909                 defaultLgroup="$2"
 910                 shift; shift
 911                 ;;
 912         -G)
 913                 defaultgroups="$2"
 914                 shift; shift
 915                 ;;
 916         -h)
 917                 show_usage
 918                 exit 0
 919                 ;;
 920         -d)
 921                 homeprefix="$2"
 922                 shift; shift
 923                 ;;
 924         -m)
 925                 case "$2" in
 926                 [Nn][Oo])
 927                         msgflag=
 928                         ;;
 929                 *)
 930                         msgflag=yes
 931                         msgfile="$2"
 932                         ;;
 933                 esac
 934                 shift; shift
 935                 ;;
 936         -N)
 937                 readconfig=
 938                 shift
 939                 ;;
 940         -w)
 941                 case "$2" in
 942                 no|none|random|yes)
 943                         passwdtype=$2
 944                         ;;
 945                 *)
 946                         show_usage
 947                         exit 1
 948                         ;;
 949                 esac
 950                 shift; shift
 951                 ;;
 952         -q)
 953                 quietflag=yes
 954                 shift
 955                 ;;
 956         -s)
 957                 defaultshell="`fullpath_from_shell $2`"
 958                 shift; shift
 959                 ;;
 960         -S)
 961                 Sflag=yes
 962                 shift
 963                 ;;
 964         -u)
 965                 uidstart=$2
 966                 shift; shift
 967                 ;;
 968         esac
 969 done
 970
 971 # If the -f switch was used, get input from a file. Otherwise,
 972 # this is an interactive session.
 973 #
 974 if [ -n "$fflag" ]; then
 975         if [ -z "$infile" ]; then
 976                 input_from_file
 977         elif [ -n "$infile" ]; then
 978                 if [ -r "$infile" ]; then
 979                         input_from_file < $infile
 980                 else
 981                         err "File ($infile) is unreadable or does not exist."
 982                 fi
 983         fi
 984 else
 985         input_interactive
 986         while : ; do
 987                 if [ -z "$configflag" ]; then
 988                         echo -n "Add another user? (yes/no): "
 989                 else
 990                         echo -n "Re-edit the default configuration? (yes/no): "
 991                 fi
 992                 read _input
 993                 case $_input in
 994                 [Yy][Ee][Ss]|[Yy][Ee]|[Yy])
 995                         uidstart=`get_nextuid $uidstart`
 996                         input_interactive
 997                         continue
 998                         ;;
 999                 [Nn][Oo]|[Nn])
1000                         echo "Goodbye!"
1001                         ;;
1002                 *)
1003                         continue
1004                         ;;
1005                 esac
1006                 break
1007         done
1008 fi