328 lines
8.2 KiB
Perl
328 lines
8.2 KiB
Perl
#!/usr/bin/perl -w -U
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# Copyright (c) 2007, 2008 Andreas Gruenbacher.
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions, and the following disclaimer,
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# without modification, immediately at the beginning of the file.
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# 2. The name of the author may not be used to endorse or promote products
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# derived from this software without specific prior written permission.
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#
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# Alternatively, this software may be distributed under the terms of the
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# GNU Public License ("GPL").
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
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# ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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# SUCH DAMAGE.
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#
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# $FreeBSD$
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#
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#
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# Possible improvements:
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#
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# - distinguish stdout and stderr output
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# - add environment variable like assignments
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# - run up to a specific line
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# - resume at a specific line
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#
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use strict;
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use FileHandle;
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use Getopt::Std;
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use POSIX qw(isatty setuid getcwd);
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use vars qw($opt_l $opt_v);
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no warnings qw(taint);
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$opt_l = ~0; # a really huge number
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getopts('l:v');
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my ($OK, $FAILED) = ("ok", "failed");
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if (isatty(fileno(STDOUT))) {
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$OK = "\033[32m" . $OK . "\033[m";
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$FAILED = "\033[31m\033[1m" . $FAILED . "\033[m";
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}
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sub exec_test($$);
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sub process_test($$$$);
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my ($prog, $in, $out) = ([], [], []);
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my $prog_line = 0;
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my ($tests, $failed) = (0,0);
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my $lineno;
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my $width = ($ENV{COLUMNS} || 80) >> 1;
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for (;;) {
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my $line = <>; $lineno++;
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if (defined $line) {
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# Substitute %VAR and %{VAR} with environment variables.
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$line =~ s[%(\w+)][$ENV{$1}]eg;
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$line =~ s[%{(\w+)}][$ENV{$1}]eg;
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}
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if (defined $line) {
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if ($line =~ s/^\s*< ?//) {
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push @$in, $line;
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} elsif ($line =~ s/^\s*> ?//) {
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push @$out, $line;
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} else {
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process_test($prog, $prog_line, $in, $out);
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last if $prog_line >= $opt_l;
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$prog = [];
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$prog_line = 0;
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}
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if ($line =~ s/^\s*\$ ?//) {
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$prog = [ map { s/\\(.)/$1/g; $_ } split /(?<!\\)\s+/, $line ];
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$prog_line = $lineno;
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$in = [];
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$out = [];
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}
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} else {
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process_test($prog, $prog_line, $in, $out);
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last;
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}
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}
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my $status = sprintf("%d commands (%d passed, %d failed)",
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$tests, $tests-$failed, $failed);
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if (isatty(fileno(STDOUT))) {
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if ($failed) {
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$status = "\033[31m\033[1m" . $status . "\033[m";
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} else {
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$status = "\033[32m" . $status . "\033[m";
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}
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}
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print $status, "\n";
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exit $failed ? 1 : 0;
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sub process_test($$$$) {
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my ($prog, $prog_line, $in, $out) = @_;
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return unless @$prog;
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my $p = [ @$prog ];
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print "[$prog_line] \$ ", join(' ',
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map { s/\s/\\$&/g; $_ } @$p), " -- ";
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my $result = exec_test($prog, $in);
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my @good = ();
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my $nmax = (@$out > @$result) ? @$out : @$result;
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for (my $n=0; $n < $nmax; $n++) {
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my $use_re;
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if (defined $out->[$n] && $out->[$n] =~ /^~ /) {
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$use_re = 1;
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$out->[$n] =~ s/^~ //g;
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}
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if (!defined($out->[$n]) || !defined($result->[$n]) ||
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(!$use_re && $result->[$n] ne $out->[$n]) ||
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( $use_re && $result->[$n] !~ /^$out->[$n]/)) {
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push @good, ($use_re ? '!~' : '!=');
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}
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else {
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push @good, ($use_re ? '=~' : '==');
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}
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}
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my $good = !(grep /!/, @good);
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$tests++;
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$failed++ unless $good;
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print $good ? $OK : $FAILED, "\n";
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if (!$good || $opt_v) {
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for (my $n=0; $n < $nmax; $n++) {
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my $l = defined($out->[$n]) ? $out->[$n] : "~";
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chomp $l;
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my $r = defined($result->[$n]) ? $result->[$n] : "~";
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chomp $r;
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print sprintf("%-" . ($width-3) . "s %s %s\n",
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$r, $good[$n], $l);
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}
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}
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}
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sub su($) {
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my ($user) = @_;
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$user ||= "root";
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my ($login, $pass, $uid, $gid) = getpwnam($user)
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or return [ "su: user $user does not exist\n" ];
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my @groups = ();
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my $fh = new FileHandle("/etc/group")
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or return [ "opening /etc/group: $!\n" ];
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while (<$fh>) {
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chomp;
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my ($group, $passwd, $gid, $users) = split /:/;
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foreach my $u (split /,/, $users) {
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push @groups, $gid
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if ($user eq $u);
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}
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}
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$fh->close;
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my $groups = join(" ", ($gid, $gid, @groups));
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#print STDERR "[[$groups]]\n";
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$! = 0; # reset errno
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$> = 0;
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$( = $gid;
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$) = $groups;
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if ($!) {
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return [ "su: $!\n" ];
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}
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if ($uid != 0) {
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$> = $uid;
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#$< = $uid;
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if ($!) {
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return [ "su: $prog->[1]: $!\n" ];
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}
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}
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#print STDERR "[($>,$<)($(,$))]";
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return [];
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}
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sub sg($) {
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my ($group) = @_;
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my $gid = getgrnam($group)
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or return [ "sg: group $group does not exist\n" ];
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my %groups = map { $_ eq $gid ? () : ($_ => 1) } (split /\s/, $));
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#print STDERR "<<", join("/", keys %groups), ">>\n";
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my $groups = join(" ", ($gid, $gid, keys %groups));
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#print STDERR "[[$groups]]\n";
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$! = 0; # reset errno
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if ($> != 0) {
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my $uid = $>;
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$> = 0;
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$( = $gid;
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$) = $groups;
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$> = $uid;
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} else {
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$( = $gid;
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$) = $groups;
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}
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if ($!) {
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return [ "sg: $!\n" ];
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}
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print STDERR "[($>,$<)($(,$))]";
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return [];
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}
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sub exec_test($$) {
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my ($prog, $in) = @_;
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local (*IN, *IN_DUP, *IN2, *OUT_DUP, *OUT, *OUT2);
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my $needs_shell = (join('', @$prog) =~ /[][|<>"'`\$\*\?]/);
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if ($prog->[0] eq "umask") {
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umask oct $prog->[1];
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return [];
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} elsif ($prog->[0] eq "cd") {
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if (!chdir $prog->[1]) {
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return [ "chdir: $prog->[1]: $!\n" ];
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}
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$ENV{PWD} = getcwd;
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return [];
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} elsif ($prog->[0] eq "su") {
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return su($prog->[1]);
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} elsif ($prog->[0] eq "sg") {
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return sg($prog->[1]);
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} elsif ($prog->[0] eq "export") {
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my ($name, $value) = split /=/, $prog->[1];
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# FIXME: need to evaluate $value, so that things like this will work:
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# export dir=$PWD/dir
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$ENV{$name} = $value;
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return [];
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} elsif ($prog->[0] eq "unset") {
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delete $ENV{$prog->[1]};
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return [];
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}
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pipe *IN2, *OUT
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or die "Can't create pipe for reading: $!";
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open *IN_DUP, "<&STDIN"
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or *IN_DUP = undef;
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open *STDIN, "<&IN2"
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or die "Can't duplicate pipe for reading: $!";
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close *IN2;
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open *OUT_DUP, ">&STDOUT"
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or die "Can't duplicate STDOUT: $!";
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pipe *IN, *OUT2
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or die "Can't create pipe for writing: $!";
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open *STDOUT, ">&OUT2"
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or die "Can't duplicate pipe for writing: $!";
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close *OUT2;
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*STDOUT->autoflush();
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*OUT->autoflush();
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if (fork()) {
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# Server
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if (*IN_DUP) {
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open *STDIN, "<&IN_DUP"
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or die "Can't duplicate STDIN: $!";
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close *IN_DUP
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or die "Can't close STDIN duplicate: $!";
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}
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open *STDOUT, ">&OUT_DUP"
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or die "Can't duplicate STDOUT: $!";
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close *OUT_DUP
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or die "Can't close STDOUT duplicate: $!";
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foreach my $line (@$in) {
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#print "> $line";
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print OUT $line;
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}
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close *OUT
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or die "Can't close pipe for writing: $!";
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my $result = [];
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while (<IN>) {
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#print "< $_";
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if ($needs_shell) {
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s#^/bin/sh: line \d+: ##;
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}
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push @$result, $_;
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}
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return $result;
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} else {
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# Client
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$< = $>;
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close IN
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or die "Can't close read end for input pipe: $!";
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close OUT
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or die "Can't close write end for output pipe: $!";
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close OUT_DUP
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or die "Can't close STDOUT duplicate: $!";
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local *ERR_DUP;
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open ERR_DUP, ">&STDERR"
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or die "Can't duplicate STDERR: $!";
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open STDERR, ">&STDOUT"
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or die "Can't join STDOUT and STDERR: $!";
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if ($needs_shell) {
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exec ('/bin/sh', '-c', join(" ", @$prog));
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} else {
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exec @$prog;
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}
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print STDERR $prog->[0], ": $!\n";
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exit;
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}
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}
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