Win::Hivex(3) User Contributed Perl Documentation Win::Hivex(3)NAMEWin::Hivex - Perl bindings for reading and writing Windows Registry
hive files
SYNOPSIS
use Win::Hivex;
$h = Win::Hivex->open ('SOFTWARE');
$root_node = $h->root ();
print $h->node_name ($root_node);
DESCRIPTION
The "Win::Hivex" module provides a Perl XS binding to the hivex(3) API
for reading and writing Windows Registry binary hive files.
ERRORS
All errors turn into calls to "croak" (see Carp(3)).
METHODS
open
$h = Win::Hivex->open ($filename,
[verbose => 1,]
[debug => 1,]
[write => 1,])
Open a Windows Registry binary hive file.
The "verbose" and "debug" flags enable different levels of
debugging messages.
The "write" flag is required if you will be modifying the hive file
(see "WRITING TO HIVE FILES" in hivex(3)).
This function returns a hive handle. The hive handle is closed
automatically when its reference count drops to 0.
root
$node = $h->root ()
Return root node of the hive. All valid hives must contain a root
node.
This returns a node handle.
last_modified
$int64 = $h->last_modified ()
Return the modification time from the header of the hive.
The returned value is a Windows filetime. To convert this to a
Unix "time_t" see:
http://stackoverflow.com/questions/6161776/convert-windows-filetime-to-second-in-unix-linux/6161842#6161842
<http://stackoverflow.com/questions/6161776/convert-windows-
filetime-to-second-in-unix-linux/6161842#6161842>
node_name
$string = $h->node_name ($node)
Return the name of the node.
Note that the name of the root node is a dummy, such as
"$$$PROTO.HIV" (other names are possible: it seems to depend on the
tool or program that created the hive in the first place). You can
only know the "real" name of the root node by knowing which
registry file this hive originally comes from, which is knowledge
that is outside the scope of this library.
node_timestamp
$int64 = $h->node_timestamp ($node)
Return the modification time of the node.
The returned value is a Windows filetime. To convert this to a
Unix "time_t" see:
http://stackoverflow.com/questions/6161776/convert-windows-filetime-to-second-in-unix-linux/6161842#6161842
<http://stackoverflow.com/questions/6161776/convert-windows-
filetime-to-second-in-unix-linux/6161842#6161842>
node_children
@nodes = $h->node_children ($node)
Return an array of nodes which are the subkeys (children) of
"node".
This returns a list of node handles.
node_get_child
$node = $h->node_get_child ($node, $name)
Return the child of node with the name "name", if it exists.
The name is matched case insensitively.
This returns a node handle, or "undef" if the node was not found.
node_parent
$node = $h->node_parent ($node)
Return the parent of "node".
The parent pointer of the root node in registry files that we have
examined seems to be invalid, and so this function will return an
error if called on the root node.
This returns a node handle.
node_values
@values = $h->node_values ($node)
Return the array of (key, value) pairs attached to this node.
This returns a list of value handles.
node_get_value
$value = $h->node_get_value ($node, $key)
Return the value attached to this node which has the name "key", if
it exists.
The key name is matched case insensitively.
Note that to get the default key, you should pass the empty string
"" here. The default key is often written "@", but inside hives
that has no meaning and won't give you the default key.
This returns a value handle.
value_key_len
$size = $h->value_key_len ($val)
Return the length of the key (name) of a (key, value) pair. The
length can legitimately be 0, so errno is the necesary mechanism to
check for errors.
In the context of Windows Registries, a zero-length name means that
this value is the default key for this node in the tree. This is
usually written as "@".
This returns a size.
value_key
$string = $h->value_key ($val)
Return the key (name) of a (key, value) pair. The name is
reencoded as UTF-8 and returned as a string.
The string should be freed by the caller when it is no longer
needed.
Note that this function can return a zero-length string. In the
context of Windows Registries, this means that this value is the
default key for this node in the tree. This is usually written as
"@".
value_type
($type, $len) = $h->value_type ($val)
Return the data length and data type of the value in this (key,
value) pair. See also "value_value" which returns all this
information, and the value itself. Also, "value_*" functions below
which can be used to return the value in a more useful form when
you know the type in advance.
node_struct_length
$size = $h->node_struct_length ($node)
Return the length of the node data structure.
This returns a size.
value_struct_length
$size = $h->value_struct_length ($val)
Return the length of the value data structure.
This returns a size.
value_value
($type, $data) = $h->value_value ($val)
Return the value of this (key, value) pair. The value should be
interpreted according to its type (see "hive_type").
value_string
$string = $h->value_string ($val)
If this value is a string, return the string reencoded as UTF-8 (as
a C string). This only works for values which have type
"hive_t_string", "hive_t_expand_string" or "hive_t_link".
value_multiple_strings
@strings = $h->value_multiple_strings ($val)
If this value is a multiple-string, return the strings reencoded as
UTF-8 (in C, as a NULL-terminated array of C strings, in other
language bindings, as a list of strings). This only works for
values which have type "hive_t_multiple_strings".
value_dword
$int32 = $h->value_dword ($val)
If this value is a DWORD (Windows int32), return it. This only
works for values which have type "hive_t_dword" or
"hive_t_dword_be".
value_qword
$int64 = $h->value_qword ($val)
If this value is a QWORD (Windows int64), return it. This only
works for values which have type "hive_t_qword".
commit
$h->commit ([$filename|undef])
Commit (write) any changes which have been made.
"filename" is the new file to write. If "filename" is
null/undefined then we overwrite the original file (ie. the file
name that was passed to "open").
Note this does not close the hive handle. You can perform further
operations on the hive after committing, including making more
modifications. If you no longer wish to use the hive, then you
should close the handle after committing.
node_add_child
$node = $h->node_add_child ($parent, $name)
Add a new child node named "name" to the existing node "parent".
The new child initially has no subnodes and contains no keys or
values. The sk-record (security descriptor) is inherited from the
parent.
The parent must not have an existing child called "name", so if you
want to overwrite an existing child, call "node_delete_child"
first.
This returns a node handle.
node_delete_child
$h->node_delete_child ($node)
Delete the node "node". All values at the node and all subnodes
are deleted (recursively). The "node" handle and the handles of
all subnodes become invalid. You cannot delete the root node.
node_set_values
$h->node_set_values ($node, \@values)
This call can be used to set all the (key, value) pairs stored in
"node".
"node" is the node to modify.
@values is an array of (keys, value) pairs. Each element should be
a hashref containing "key", "t" (type) and "data".
Any existing values stored at the node are discarded, and their
"value" handles become invalid. Thus you can remove all values
stored at "node" by passing "@values = []".
node_set_value
$h->node_set_value ($node, $val)
This call can be used to replace a single "(key, value)" pair
stored in "node". If the key does not already exist, then a new
key is added. Key matching is case insensitive.
"node" is the node to modify.
COPYRIGHT
Copyright (C) 2009-2011 Red Hat Inc.
LICENSE
Please see the file COPYING.LIB for the full license.
SEE ALSOhivex(3), hivexsh(1), <http://libguestfs.org>, Sys::Guestfs(3).
perl v5.14.2 2011-11-19 Win::Hivex(3)
