+++ /dev/null
-#!/usr/bin/env perl
-#
-# Copyright (c) 2007, 2010-2011, 2013 Todd C. Miller <Todd.Miller@sudo.ws>
-#
-# Permission to use, copy, modify, and distribute this software for any
-# purpose with or without fee is hereby granted, provided that the above
-# copyright notice and this permission notice appear in all copies.
-#
-# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
-# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
-# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
-# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
-# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
-# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
-# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
-#
-
-use warnings;
-use strict;
-
-#
-# Converts a sudoers file to LDIF format in prepration for loading into
-# the LDAP server.
-#
-
-# BUGS:
-# Does not yet handle multiple lines with : in them
-# Does not yet remove quotation marks from options
-# Does not yet escape + at the beginning of a dn
-# Does not yet handle line wraps correctly
-#
-# CAVEATS:
-# Sudoers entries can have multiple RunAs entries that override former ones,
-# with LDAP sudoRunAs{Group,User} applies to all commands in a sudoRole
-
-my %RA;
-my %UA;
-my %HA;
-my %CA;
-my $base=$ENV{SUDOERS_BASE} or die "$0: Container SUDOERS_BASE undefined\n";
-my @options = ();
-my $notBefore;
-my $notAfter;
-
-my $did_defaults = 0;
-my $order = 0;
-my %seen_users;
-my @sudoersdirs;
-
-# Parsing is now through callbacks reading @ARGV or STDIN
-sub parse_sudoers_line {
- my $line = shift;
-
- # remove comment
- $line =~ s/#.*//;
-
- # cleanup newline
- chomp $line;
-
- # ignore blank lines
- return if $line =~ /^\s*$/;
-
- if ($line =~ s/^Defaults\s+//) {
- $line =~ s/\s+$//; # remove trailing whitespace
- # remove spaces between '!', '=', '+=' and '-='
- $line =~ s/^(\S+)\s*([\+-]?=)\s*(\S.*)$/$1$2$3/ unless $line =~ s/^!\s*(\S.*)$/!$1/;
- push @options, $line;
- } elsif ($line =~ /^(\S+)\s+([^=]+)=\s*(.*)/) {
- # Aliases or Definitions
- my ($p1, $p2, $p3) = ($1, $2, $3);
- $p2 =~ s/\s+$//; # remove trailing whitespace
- $p3 =~ s/\s+$//; # remove trailing whitespace
-
- if ($p1 eq "User_Alias") {
- $UA{$p2}=$p3;
- } elsif ($p1 eq "Runas_Alias") {
- $RA{$p2}=$p3;
- } elsif ($p1 eq "Host_Alias") {
- $HA{$p2}=$p3;
- } elsif ($p1 eq "Cmnd_Alias") {
- $CA{$p2}=$p3;
- } else {
- if (!$did_defaults++){
- # do this once
- print "dn: cn=defaults,$base\n";
- print "objectClass: top\n";
- print "objectClass: sudoRole\n";
- print "cn: defaults\n";
- print "description: Default sudoOption's go here\n";
- print "sudoOption: $_\n" foreach @options;
- printf "sudoOrder: %d\n", ++$order;
- print "\n";
- }
- # Definition
- my @users = split(/\s*,\s*/, $p1);
- my $username = $users[0];
- if ($seen_users{$username}) {
- $seen_users{$username} += 1;
- $username = sprintf("%s_%s", $username, $seen_users{$username});
- } else {
- $seen_users{$username} = 1;
- }
- my @hosts = split(/\s*,\s*/, $p2);
- my @cmds = split(/\s*,\s*/, $p3);
- @options=();
- undef $notBefore;
- undef $notAfter;
- print "dn: cn=$username,$base\n";
- print "objectClass: top\n";
- print "objectClass: sudoRole\n";
- print "cn: $username\n";
- # will clobber options
- print "sudoUser: $_\n" foreach expand(\%UA,@users);
- print "sudoHost: $_\n" foreach expand(\%HA,@hosts);
- foreach (@cmds) {
- if (s/^\(([^\)]+)\)\s*//) {
- my @runas = split(/:\s*/, $1);
- if (defined($runas[0])) {
- print "sudoRunAsUser: $_\n" foreach expand(\%RA, split(/,\s*/, $runas[0]));
- }
- if (defined($runas[1])) {
- print "sudoRunAsGroup: $_\n" foreach expand(\%RA, split(/,\s*/, $runas[1]));
- }
- }
- }
- print "sudoCommand: $_\n" foreach expand(\%CA,@cmds);
- print "sudoNotBefore: $notBefore\n" if defined($notBefore);
- print "sudoNotAfter: $notAfter\n" if defined($notAfter);
- print "sudoOption: $_\n" foreach @options;
- printf "sudoOrder: %d\n", ++$order;
- print "\n";
- }
- } else {
- warn "parse error: $line\n";
- }
-}
-
-# Recursively expand hash elements
-sub expand {
- my $ref=shift;
- my @a=();
-
- # preen the line a little
- foreach (@_) {
- # Convert upper case command options
- s/TIMEOUT=(\S+)\s*// && push @options,"timeout=$1";
- s/ROLE=(\S+)\s*// && push @options,"role=$1";
- s/TYPE=(\S+)\s*// && push @options,"type=$1";
- s/PRIVS=(\S+)\s*// && push @options,"privs=$1";
- s/LIMITPRIVS=(\S+)\s*// && push @options,"limitprivs=$1";
- s/NOTBEFORE=(\S+)\s*// && do { $notBefore=$1 };
- s/NOTAFTER=(\S+)\s*// && do { $notAfter=$1 };
-
- # Convert command tags to options
- s/NOPASSWD:\s*// && push @options,"!authenticate";
- s/PASSWD:\s*// && push @options,"authenticate";
- s/NOEXEC:\s*// && push @options,"noexec";
- s/EXEC:\s*// && push @options,"!noexec";
- s/SETENV:\s*// && push @options,"setenv";
- s/NOSETENV:\s*// && push @options,"!setenv";
- s/LOG_INPUT:\s*// && push @options,"log_input";
- s/NOLOG_INPUT:\s*// && push @options,"!log_input";
- s/LOG_OUTPUT:\s*// && push @options,"log_output";
- s/NOLOG_OUTPUT:\s*// && push @options,"!log_output";
- s/[[:upper:]]+://; # silently remove other tags
- s/\s+$//; # right trim
- }
-
- # do the expanding
- push @a,$ref->{$_} ? expand($ref,split /\s*,\s*/,$ref->{$_}):$_ foreach @_;
- @a;
-}
-
-# Parse sudoers, expanding #include and #includedir directives
-sub scan_sudoers_fh {
- my ($filehandle, $callback) = @_;
-
- while (<$filehandle>) {
- if (/^#include\s+(.+?)\s*$/){
- scan_sudoers_filename($1, 0, $callback);
- } elsif (/^#includedir\s+(.+?)\s*$/){
- scan_sudoers_dirname($1, $callback);
- } else {
- $callback->($_);
- }
- }
-}
-
-# Read from #include file
-sub scan_sudoers_filename {
- my ($filename, $quiet, $callback) = @_;
-
- # Keep track of the parent dir of sudoers for relative includes
- if ($filename =~ m:^(/.*/):) {
- push(@sudoersdirs, $1);
- } elsif ($#sudoersdirs != -1) {
- $filename = $sudoersdirs[$#sudoersdirs] . "/$filename";
- push(@sudoersdirs, $sudoersdirs[$#sudoersdirs]);
- }
- if (open(my $fh, '<', $filename)) {
- scan_sudoers_fh($fh, $callback);
- } else {
- warn "unable to open $filename: $!\n" unless $quiet;
- }
- pop(@sudoersdirs) unless $#sudoersdirs == -1;
-}
-
-# Read from #includedir directory
-sub scan_sudoers_dirname {
- my ($dirname, $callback) = @_;
-
- # Ignore a missing include dir
- if (opendir(my $dh, $dirname)) {
- while (readdir $dh) {
- # Ignore files that end in '~' or have a '.' in them
- next if /\./ || /~$/;
- scan_sudoers_filename("$dirname/$_", 1, $callback);
- }
- closedir($dh);
- }
-}
-
-# Returns a sub that reads lines until continuations,
-# then it invokes the callback to do the parsing
-sub make_continuation_handler {
- my ($callback) = @_;
-
- my $buffer = '';
- return sub {
- my ($line) = @_;
-
- if ($line =~ s/\\\s*$//) {
- # line continuation
- $buffer .= $line;
- } else {
- # parse buffer
- $callback->($buffer . $line);
- # empty buffer
- $buffer='';
- }
- };
-}
-
-my $parser_cb = make_continuation_handler(\&parse_sudoers_line);
-if (@ARGV) {
- scan_sudoers_filename($_, 0, $parser_cb) for @ARGV;
-} else {
- scan_sudoers_fh(\*STDIN, $parser_cb);
-}
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