Source code of Windows XP (NT5)
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######################################################################
# Routines used for converting dirid/path combinations to a
# regular form.
#
package CanonDir;
use Logmsg;
require Exporter;
@ISA = qw(Exporter);
@EXPORT = qw(addPrefix removePrefix);
@EXPORT_OK = qw(%scanids %updids %revids %misses);
local %scanids;
local %updids;
local %revids;
local %misses;
sub reverseHash {
my (%old) = @_;
my %new;
foreach my $key (keys %old) {
$new{$old{$key}} = $key;
}
return %new;
}
sub setup {
my ($archd, $arch) = @_;
%scanids = ( # List of dirid definitions from infscan.lst.
10 => "",
23 => "system32\\spool\\drivers\\color",
25 => "",
30 => "..",
50 => "system",
53 => "..\\documents and settings\\default user",
54 => "..",
16419 => "..\\documents and settings\\all users\\application data",
16422 => "..\\program files",
16425 => "syswow64",
16426 => "..\\program files (x86)",
16427 => "..\\program files\\common files",
16428 => "..\\program files (x86)\\common files",
16437 => "..\\documents and settings\\all users\\documents\\my music",
16438 => "..\\documents and settings\\all users\\documents\\my pictures",
32768 => "system32\\inetsrv",
32770 => "..\\inetpub\\wwwroot",
32771 => "..\\inetpub\\iissamples",
32773 => "..\\inetpub",
40002 => "..\\program files\\common files\\microsoft shared\\web server extensions",
40003 => "..\\program files\\microsoft frontpage",
49005 => "msagent",
49500 => "..\\program files\\msn\\msncorefiles",
# 49600 =>
65618 => "..\\program files",
65619 => "system32\\dllcache",
65620 => "..\\program files\\common files",
65690 => "system32\\spool\\drivers\\$archd",
66000 => "system32\\spool\\drivers\\$archd\\3",
66002 => "system32",
66003 => "system32\\spool\\drivers\\color",
66004 => "web\\printers"
# 123174 =>
# 123175 =>
);
%updids = ( # List of dirid definitions from inf template.
-1 => "!",
10 => "",
11 => "system32",
12 => "system32\\drivers",
17 => "inf",
20 => "fonts",
54 => "..",
16408 => "..\\all users\\start menu\programs\startup",
16425 => "syswow64",
16426 => "..\\program files (x86)",
16428 => "..\\program files (x86)\\common files",
65535 => "\\", # Used for special sections.
65618 => "..\\program files",
65619 => "system32\\dllcache",
65620 => "..\\program files\\common files",
65690 => "system32\\spool\\drivers\\$archd",
# Destination determined at run time (hotfix.inf).
65601 => "!65601",
65602 => "!65602",
65603 => "!65603",
65604 => "!65604",
65605 => "!65605",
65606 => "!65606",
65607 => "!65607",
65609 => "!65609",
65615 => "!65615",
65622 => "!65622",
65623 => "driver cache\\$arch",
65624 => "!65624",
65625 => "!65625",
65626 => "!65626",
65628 => "!65628"
);
%revids = reverseHash(%updids); # Reverse lookup for %updids.
}
# Interpret the dirid and generate a full path.
sub addPrefix {
my ($dirid, $path, %prefixes) = @_;
if ( !exists $prefixes{$dirid} ) {
if ( !exists $misses{$dirid} ) {
$misses{$dirid} = 1;
} else {
$misses{$dirid}++;
}
return "!$dirid\\$path";
}
my $dir = $prefixes{$dirid};
$dir = "$dir\\" if $path ne "" and $dir ne "";
return "$dir$path";
}
# Change a full path to a dirid with a relative path.
sub removePrefix {
my ($path, %prefixes) = @_;
my $dir = $path;
my $fname = "";
while ( !exists $prefixes{$dir} ) {
$dir =~ /((.*)\\)?([^\\]*)/;
$fname = "\\$fname" if $fname ne "";
$fname = "$3$fname";
$dir = $2;
}
return ($prefixes{$dir}, $fname);
}
1;