rpmsafe: realpath fixes

[nethome.git] / bin / exx

diff --git a/bin/exx b/bin/exx
index df78524..97f021b 100755 (executable)
--- a/bin/exx
+++ b/bin/exx
@@ -6,38 +6,74 @@ use strict;
 use warnings;
 
 use IO::Handle;
-use Cwd qw(chdir fastgetcwd);
+use Cwd qw(chdir cwd);
 
+use constant FORMAT_TAR=>'tar xf $pathname;i=`echo *`;echo "$i"|grep -q " " || test * != $base ||'
+                         .'(mv "$i" "$i".$$;(set +x;mv "$i".$$/* .);rmdir "$i".$$)';
 use constant FORMATS=>{
-       "rpm"=>'rpm2cpio !|cpio -id --quiet',   #-v #FIXME: --sparse doesn't work, why?
-       "zip"=>'unzip -Lq !',
-       "a"  =>'ar x !',
-       "deb"=>'ar x !;for i in *.tar.gz;do j=`basename $i .tar.gz`;mkdir -p $j;cd $j;tar xzf ../$i;cd ..;rm -f $i;done',
+       "rpm"    =>'rpm2cpio $pathname|cpio -id --quiet',       #-v #FIXME: --sparse doesn't work, why?
+       "zip"    =>'unzip -Lq $pathname',
+       "jar"    =>'unzip -Lq $pathname',
+       "a"      =>'ar x $pathname',
+       "deb"    =>'ar x $pathname;'
+                  .'for i in *.tar.gz;do j=`basename $i .tar.gz`;mkdir -p $j;cd $j;tar xzf ../$i;cd ..;rm -f $i;done',
+       "arj"    =>'unarj x $pathname',
+       "tar"    =>FORMAT_TAR,
+       "tar.gz" =>do { $_=FORMAT_TAR; s/xf/xzf/; $_; },
+       "tgz"    =>"tar.gz",
+       "tar.bz2"=>do { $_=FORMAT_TAR; s/xf/xjf/; $_; },
+       "tar.bz" =>"tar.bz2",
+       "tbz"    =>"tar.bz",
+       "tar.xz" =>do { $_=FORMAT_TAR; s/xf/xJf/; $_; },
+       "txz"    =>do { $_=FORMAT_TAR; s/xf/xJf/; $_; },
+       "msi"    =>'cabextract -q $pathname',
        };
 
 die "Syntax: $0 <pathname((".join("|",map(".$_",sort keys %{+FORMATS})).")|=<ext>)>..."
                if !@ARGV;
 
-my $origdir=fastgetcwd;
+my @extdirs;
+my $origdir=cwd;
 for my $fname (@ARGV) {
-       $fname=~m#([^/]+)([.=])(\L[^./]+\E)$# or die "Extension not found for archive: $fname";
-       my($path,$base,$ext)=($`,$1,$3);
-       my($pathname)=($2 eq "=" ? "$path$base" : $fname);
-       my $cmd=FORMATS->{$ext} or die "Extension \"$ext\" not known for archive: $fname";
+       my @parsed;
+       for my $fmt (sort { length $b<=>length $a; } keys %{+FORMATS}) {
+               last if @parsed=$fname=~m#^(.*?)([^/]+)([.=])(\Q$fmt\E)$#i;
+               }
+       $parsed[3] or die "Extension not found for archive: $fname";
+       my($path,$base,$ext)=@parsed[0,1,3];
+       my($pathname)=($parsed[2] eq "=" ? "$path$base" : $fname);
+       my($cmdtry,$cmd)=(lc $ext);
+       do {
+               $cmd=$cmdtry;
+               $cmdtry=FORMATS->{$cmdtry};
+               } while ($cmdtry);
        -r $pathname && !-d $pathname or die "Archive not readable: $pathname";
        my($extdir)=(-e $base && !-d $base ? "$base.dir" : $base);
-       -d $extdir or mkdir $extdir or die "Unable to create directory \"$extdir\": $!";
+       # Extraction-overwriting cowardly not supported:
+                       # -d $extdir or ...
+       mkdir $extdir or die "Unable to create directory \"$extdir\": $!";
        chdir $extdir or die "Unable to chdir to \"$extdir\": $!";
        $pathname="../$pathname" if $pathname!~m#^/#;
-       $pathname=~s/'/'\\''/g;
-       $pathname="'$pathname'";
-       $cmd=~s/!/$pathname/g;
+       $path    ="../$path"     if $path    !~m#^/#;
        $cmd="set -ex;$cmd";
+       my %substvars=(
+                       "pathname"=>\$pathname,
+                       "path"    =>\$path,
+                       "base"    =>\$base,
+                       "ext"     =>\$ext,
+                       "extdir"  =>\$extdir,
+                       );
+       while (my($name,$var)=each %substvars) {
+               ($_=$$var)=~s/'/'\\''/g;
+               $cmd="$name='$_';$cmd";
+               }
        print "\t$extdir/:\n"; STDOUT->flush();
        my $rc;
        $rc=system $cmd and die "$cmd (rc=".($rc>>8)."): $!";
+       push @extdirs,$extdir;
        }
        continue {
                chdir $origdir;
                }
+print "extdir=".$extdirs[0]."\n" if 1==@extdirs;
 exit 0;