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ArchiveFormat refactored.

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(Extract): method is no longer virtual.
(CreateFile): added check for malicious and malformed filenames.
(ParametersRequestEventArgs): removed InputWidget property.
This commit is contained in:
morkt 2014-07-29 07:01:36 +04:00
parent 92aa3debab
commit 8bc92d0dea
1 changed files with 23 additions and 13 deletions
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36
GameRes/GameRes.cs
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@ -140,7 +140,7 @@ namespace GameRes
/// <summary>
/// Extract file referenced by <paramref name="entry"/> into current directory.
/// </summary>
public virtual void Extract (ArcFile file, Entry entry)
public void Extract (ArcFile file, Entry entry)
{
using (var reader = OpenEntry (file, entry))
{
@ -161,20 +161,35 @@ namespace GameRes
/// <summary>
/// Create file corresponding to <paramref name="entry"/> in current directory and open it
/// for writing.
/// for writing. Overwrites existing file, if any.
/// </summary>
public virtual Stream CreateFile (Entry entry)
{
string dir = Path.GetDirectoryName (entry.Name);
if (!string.IsNullOrEmpty (dir))
string filename = entry.Name;
string dir = Path.GetDirectoryName (filename);
if (!string.IsNullOrEmpty (dir)) // check for malformed filenames
{
Directory.CreateDirectory (dir);
string root = Path.GetPathRoot (dir);
if (!string.IsNullOrEmpty (root))
{
dir = dir.Substring (root.Length); // strip root
}
string cwd = Directory.GetCurrentDirectory() + Path.DirectorySeparatorChar;
dir = Path.GetFullPath (dir);
filename = Path.GetFileName (filename);
// check whether filename would reside within current directory
if (dir.StartsWith (cwd, StringComparison.OrdinalIgnoreCase))
{
// path looks legit, create it
Directory.CreateDirectory (dir);
filename = Path.Combine (dir, filename);
}
}
return File.Create (entry.Name);
return File.Create (filename);
}
/// <summary>
/// Create resource wihin stream <paramref name="file"/> containing entries from the
/// Create resource within stream <paramref name="file"/> containing entries from the
/// supplied <paramref name="list"/> and applying necessary <paramref name="options"/>.
/// </summary>
public virtual void Create (Stream file, IEnumerable<Entry> list, ResourceOptions options = null,
@ -190,7 +205,7 @@ namespace GameRes
public virtual ResourceOptions GetOptions (object widget)
{
return null;
return GetDefaultOptions();
}
public virtual object GetCreationWidget ()
@ -221,11 +236,6 @@ namespace GameRes
/// </summary>
public string Notice { get; set; }
/// <summary>
/// UIElement responsible for displaying request.
/// </summary>
public object InputWidget { get; set; }
/// <summary>
/// Return value from ShowDialog()
/// </summary>