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//
// X509Store.cs: Handles a X.509 certificates/CRLs store
//
// Author:
// Sebastien Pouliot <sebastien@ximian.com>
//
// (C) 2004 Novell (http://www.novell.com)
//
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System;
using System.Collections;
using System.Globalization;
using System.IO;
using System.Text;
using Mono.Security.X509.Extensions;
namespace Mono.Security.X509 {
#if INSIDE_CORLIB
internal
#else
public
#endif
class X509Store {
private string _storePath;
private X509CertificateCollection _certificates;
private ArrayList _crls;
private bool _crl;
private string _name;
internal X509Store (string path, bool crl)
{
_storePath = path;
_crl = crl;
}
// properties
public X509CertificateCollection Certificates {
get {
if (_certificates == null) {
_certificates = BuildCertificatesCollection (_storePath);
}
return _certificates;
}
}
public ArrayList Crls {
get {
// CRL aren't applicable to all stores
// but returning null is a little rude
if (!_crl) {
_crls = new ArrayList ();
}
if (_crls == null) {
_crls = BuildCrlsCollection (_storePath);
}
return _crls;
}
}
public string Name {
get {
if (_name == null) {
int n = _storePath.LastIndexOf (Path.DirectorySeparatorChar);
_name = _storePath.Substring (n+1);
}
return _name;
}
}
// methods
public void Clear ()
{
if (_certificates != null)
_certificates.Clear ();
_certificates = null;
if (_crls != null)
_crls.Clear ();
_crls = null;
}
public void Import (X509Certificate certificate)
{
if (!Directory.Exists (_storePath)) {
Directory.CreateDirectory (_storePath);
}
string filename = Path.Combine (_storePath, GetUniqueName (certificate));
if (!File.Exists (filename)) {
using (FileStream fs = File.OpenWrite (filename)) {
byte[] data = certificate.RawData;
fs.Write (data, 0, data.Length);
fs.Close ();
}
}
}
public void Remove (X509Certificate certificate)
{
string filename = Path.Combine (_storePath, GetUniqueName (certificate));
if (File.Exists (filename)) {
File.Delete (filename);
}
}
// private stuff
private string GetUniqueName (X509Certificate certificate)
{
string method = null;
byte[] name = null;
// We prefer Subject Key Identifier as the unique name
// as it will provide faster lookups
X509Extension ext = certificate.Extensions ["2.5.29.14"];
if (ext != null) {
SubjectKeyIdentifierExtension ski = new SubjectKeyIdentifierExtension (ext);
name = ski.Identifier;
method = "ski";
}
else {
method = "tbp"; // thumbprint
name = certificate.Hash;
}
StringBuilder sb = new StringBuilder (method);
sb.Append ("-");
foreach (byte b in name) {
sb.Append (b.ToString ("X2", CultureInfo.InvariantCulture));
}
sb.Append (".cer");
return sb.ToString ();
}
private byte[] Load (string filename)
{
byte[] data = null;
using (FileStream fs = File.OpenRead (filename)) {
data = new byte [fs.Length];
fs.Read (data, 0, data.Length);
fs.Close ();
}
return data;
}
private X509Certificate LoadCertificate (string filename)
{
byte[] data = Load (filename);
X509Certificate cert = new X509Certificate (data);
return cert;
}
private X509Crl LoadCrl (string filename)
{
byte[] data = Load (filename);
X509Crl crl = new X509Crl (data);
return crl;
}
private X509CertificateCollection BuildCertificatesCollection (string storeName)
{
string path = Path.Combine (_storePath, storeName);
if (!Directory.Exists (path)) {
Directory.CreateDirectory (path);
}
X509CertificateCollection coll = new X509CertificateCollection ();
string[] files = Directory.GetFiles (path, "*.cer");
if ((files != null) && (files.Length > 0)) {
foreach (string file in files) {
try {
X509Certificate cert = LoadCertificate (file);
coll.Add (cert);
}
catch {
// in case someone is dumb enough
// (like me) to include a base64
// encoded certs (or other junk
// into the store).
}
}
}
return coll;
}
private ArrayList BuildCrlsCollection (string storeName)
{
ArrayList list = new ArrayList ();
string path = Path.Combine (_storePath, storeName);
string[] files = Directory.GetFiles (path, "*.crl");
if ((files != null) && (files.Length > 0)) {
foreach (string file in files) {
try {
X509Crl crl = LoadCrl (file);
list.Add (crl);
}
catch {
// junk catcher
}
}
}
return list;
}
}
}
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