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* extfs/uzip.in: Fix handling of archive member pathnames starting

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with "./".
This commit is contained in:
Roland Illig 2004-12-10 00:08:31 +00:00
parent 3fff2ff3c9
commit 001a6c1b90
2 changed files with 68 additions and 6 deletions
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5
vfs/ChangeLog
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@ -1,3 +1,8 @@
2004-12-10 Roland Illig <roland.illig@gmx.de>
* extfs/uzip.in: Fix handling of archive member pathnames starting
with "./".
2004-12-07 Roland Illig <roland.illig@gmx.de>
* ext.c: Fixed FIXME by passing around a reference to a VFS.

69
vfs/extfs/uzip.in
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@ -34,6 +34,14 @@ my $cmd_delete = "$app_zip -d";
# Command used to extract a file to standard out
my $cmd_extract = "$app_unzip -p";
# -rw-r--r-- 2.2 unx 2891 tx 1435 defN 20000330.211927 ./edit.html
# (perm) (?) (?) (size) (?) (zippedsize) (method) (yyyy)(mm)(dd)(HH)(MM) (fname)
my $regex_zipinfo_line = qr"^(\S{10})\s+(\d+\.\d+)\s+(\S+)\s+(\d+)\s+(\S\S)\s+(\d+)\s+(\S{4})\s+(\d{4})(\d\d)(\d\d)\.(\d\d)(\d\d)(\d\d)\s(.*)$";
# 2891 Defl:N 1435 50% 03-30-00 21:19 50cbaaf8 ./edit.html
# (size) (method) (zippedsize) (zipratio) (mm)(dd)(yy)(HH)(MM) (cksum) (fname)
my $regex_nonzipinfo_line = qr"^\s*(\d+)\s+(\S+)\s+(\d+)\s+(-?\d+\%)\s+(\d?\d)-(\d?\d)-(\d\d)\s+(\d?\d):(\d\d)\s+([0-9a-f]+)\s\s(.*)$";
#
# Main code
#
@ -50,6 +58,50 @@ my $aarchive = absolutize($archive, $oldpwd);
my $cmd_list = ($op_has_zipinfo ? $cmd_list_zi : $cmd_list_nzi);
my ($qarchive, $aqarchive) = map (quotemeta, $archive, $aarchive);
# Strip all "." and ".." path components from a pathname.
sub zipfs_canonicalize_pathname($) {
my ($fname) = @_;
$fname =~ s,/+,/,g;
$fname =~ s,(^|/)(?:\.?\./)+,$1,;
return $fname;
}
# The Midnight Commander never calls this script with archive pathnames
# starting with either "./" or "../". Some ZIP files contain such names,
# so we need to build a translation table for them.
my $zipfs_realpathname_table = undef;
sub zipfs_realpathname($) {
my ($fname) = @_;
if (!defined($zipfs_realpathname_table)) {
$zipfs_realpathname_table = {};
if (!open(ZIP, "$cmd_list $qarchive |")) {
return $fname;
}
foreach my $line (<ZIP>) {
$line =~ s/\r*\n*$//;
if ($op_has_zipinfo) {
if ($line =~ $regex_zipinfo_line) {
my ($fname) = ($14);
$zipfs_realpathname_table->{zipfs_canonicalize_pathname($fname)} = $fname;
}
} else {
if ($line =~ $regex_nonzipinfo_line) {
my ($fname) = ($11);
$zipfs_realpathname_table->{zipfs_canonicalize_pathname($fname)} = $fname;
}
}
}
if (!close(ZIP)) {
return $fname;
}
}
if (exists($zipfs_realpathname_table->{$fname})) {
return $zipfs_realpathname_table->{$fname};
}
return $fname;
}
if ($cmd eq 'list') { &mczipfs_list(@ARGV); }
if ($cmd eq 'rm') { &mczipfs_rm(@ARGV); }
if ($cmd eq 'rmdir') { &mczipfs_rmdir(@ARGV); }
@ -63,7 +115,12 @@ exit 1;
# Remove a file from the archive.
sub mczipfs_rm {
my ($qfile) = map { &zipquotemeta($_) } @_;
my ($qfile) = map { &zipquotemeta(zipfs_realpathname($_)) } @_;
# "./" at the beginning of pathnames is stripped by Info-ZIP,
# so convert it to "[.]/" to prevent stripping.
$qfile =~ s/^\\\./[.]/;
&checkargs(1, 'archive file', @_);
&safesystem("$cmd_delete $qarchive $qfile >/dev/null");
exit;
@ -74,7 +131,7 @@ sub mczipfs_rm {
# additional slash to the directory name to remove. I am not
# sure this is absolutely necessary, but it doesn't hurt.
sub mczipfs_rmdir {
my ($qfile) = map { &zipquotemeta($_) } @_;
my ($qfile) = map { &zipquotemeta(zipfs_realpathname($_)) } @_;
&checkargs(1, 'archive directory', @_);
&safesystem("$cmd_delete $qarchive $qfile/ >/dev/null", 12);
exit;
@ -84,7 +141,7 @@ sub mczipfs_rmdir {
# Note that we don't need to check if the file is a link,
# because mc apparently doesn't call copyout for symbolic links.
sub mczipfs_copyout {
my ($qafile, $qfsfile) = map { &zipquotemeta($_) } @_;
my ($qafile, $qfsfile) = map { &zipquotemeta(zipfs_realpathname($_)) } @_;
&checkargs(1, 'archive file', @_);
&checkargs(2, 'local file', @_);
&safesystem("$cmd_extract $qarchive $qafile > $qfsfile", 11);
@ -195,14 +252,14 @@ sub mczipfs_list {
next if /^Archive:/;
next if /^\d+ file/;
next if /^Empty zipfile\.$/;
my @match = /^(.{10}) +([\d.]+) +([a-z\d]+) +(\d+) +([^ ]{2}) +(\d+) +([^ ]{4}) +(\d{4})(\d\d)(\d\d)\.(\d\d)(\d\d)(\d\d) +(.*)$/;
my @match = /$regex_zipinfo_line/;
next if ($#match != 13);
&checked_print_file(@match);
}
} else {
while (<PIPE>) {
chomp;
my @match = /^ *(\d+) +([^ ]+) +(\d+) +(-?\d+\%) +(\d?\d)-(\d?\d)-(\d\d) (\d?\d):(\d\d) +([0-9a-f]+) +(.*)$/;
my @match = /$regex_nonzipinfo_line/;
next if ($#match != 10);
my @rmatch = ('', '', 'unknown', $match[0], '', $match[2], $match[1],
$match[6] + ($match[6] < 70 ? 2000 : 1900), $match[4], $match[5],
@ -230,7 +287,7 @@ sub mczipfs_list {
sub mczipfs_run {
my ($afile) = @_;
&checkargs(1, 'archive file', @_);
my $qafile = &zipquotemeta($afile);
my $qafile = &zipquotemeta(zipfs_realpathname($afile));
my $tmpdir = &mktmpdir();
my $tmpfile = File::Basename::basename($afile);