1
Using#region Using
2
3using System;
4using System.Xml;
5using System.Collections.Generic;
6using System.Collections.Specialized;
7using System.Configuration.Provider;
8using System.Web.Security;
9using System.Globalization;
10using System.Web.Hosting;
11using System.Web.Management;
12using System.Security.Permissions;
13using System.Web;
14using System.Text;
15using System.Security.Cryptography;
16
17
#endregion
18
19namespace LiveBlog.Core.Providers ...{
20
/**//// <summary>
21 ///
22
/// </summary>
23 public class XmlMembershipProvider : MembershipProvider ...{
24 private Dictionary<string, MembershipUser> _Users;
25 private string _XmlFileName;
26
27 Properties#region Properties
28
29 // MembershipProvider Properties
30 /**//// <summary>
31 ///
32 /// </summary>
33 public override string ApplicationName ...{
34 get ...{ throw new NotSupportedException(); }
35 set ...{ throw new NotSupportedException(); }
36 }
37
38 /**//// <summary>
39 ///
40 /// </summary>
41 public override bool EnablePasswordRetrieval ...{
42 get ...{ return false; }
43 }
44
45 /**//// <summary>
46 ///
47 /// </summary>
48 public override bool EnablePasswordReset ...{
49 get ...{ return false; }
50 }
51
52 /**//// <summary>
53 ///
54 /// </summary>
55 public override int MaxInvalidPasswordAttempts ...{
56 get ...{ return 5; }
57 }
58
59 /**//// <summary>
60 ///
61 /// </summary>
62 public override int MinRequiredNonAlphanumericCharacters ...{
63 get ...{ return 0; }
64 }
65
66 /**//// <summary>
67 ///
68 /// </summary>
69 public override int MinRequiredPasswordLength ...{
70 get ...{ return 8; }
71 }
72
73 /**//// <summary>
74 ///
75 /// </summary>
76 public override int PasswordAttemptWindow ...{
77 get ...{ throw new NotSupportedException(); }
78 }
79
80 /**//// <summary>
81 ///
82 /// </summary>
83 public override MembershipPasswordFormat PasswordFormat ...{
84 get ...{ return MembershipPasswordFormat.Clear; }
85 }
86
87 /**//// <summary>
88 ///
89 /// </summary>
90 public override string PasswordStrengthRegularExpression ...{
91 get ...{ throw new NotSupportedException(); }
92 }
93
94 /**//// <summary>
95 ///
96 /// </summary>
97 public override bool RequiresQuestionAndAnswer ...{
98 get ...{ return false; }
99 }
100
101 /**//// <summary>
102 ///
103 /// </summary>
104 public override bool RequiresUniqueEmail ...{
105 get ...{ return false; }
106 }
107
108 #endregion
109
110 Supported methods#region Supported methods
111
112 /**//// <summary>
113 ///
114 /// </summary>
115 /// <param name="name"></param>
116 /// <param name="config"></param>
117 public override void Initialize(string name, NameValueCollection config) ...{
118 if (config == null)
119 throw new ArgumentNullException("config");
120
121 if (String.IsNullOrEmpty(name))
122 name = "XmlMembershipProvider";
123
124 if (Type.GetType("Mono.Runtime") != null) ...{
125 // Mono dies with a "Unrecognized attribute: description" if a description is part of the config.
126 if (!string.IsNullOrEmpty(config["description"])) ...{
127 config.Remove("description");
128 }
129 } else ...{
130 if (string.IsNullOrEmpty(config["description"])) ...{
131 config.Remove("description");
132 config.Add("description", "XML membership provider");
133 }
134 }
135
136 base.Initialize(name, config);
137
138 // Initialize _XmlFileName and make sure the path
139 // is app-relative
140 string path = config["xmlFileName"];
141
142 if (String.IsNullOrEmpty(path))
143 path = BlogSettings.Instance.StorageLocation + "users.xml";
144
145 if (!VirtualPathUtility.IsAppRelative(path))
146 throw new ArgumentException
147 ("xmlFileName must be app-relative");
148
149 string fullyQualifiedPath = VirtualPathUtility.Combine
150 (VirtualPathUtility.AppendTrailingSlash
151 (HttpRuntime.AppDomainAppVirtualPath), path);
152
153 _XmlFileName = HostingEnvironment.MapPath(fullyQualifiedPath);
154 config.Remove("xmlFileName");
155
156 // Make sure we have permission to read the XML data source and
157 // throw an exception if we don't
158 FileIOPermission permission = new FileIOPermission(FileIOPermissionAccess.Write, _XmlFileName);
159 permission.Demand();
160
161 // Throw an exception if unrecognized attributes remain
162 if (config.Count > 0) ...{
163 string attr = config.GetKey(0);
164 if (!String.IsNullOrEmpty(attr))
165 throw new ProviderException("Unrecognized attribute: " + attr);
166 }
167 }
168
169 /**//// <summary>
170 /// Returns true if the username and password match an exsisting user.
171 /// </summary>
172 public override bool ValidateUser(string username, string password) ...{
173 if (String.IsNullOrEmpty(username) || String.IsNullOrEmpty(password))
174 return false;
175
176 try ...{
177 ReadMembershipDataStore();
178
179 // Validate the user name and password
180 MembershipUser user;
181 if (_Users.TryGetValue(username, out user)) ...{
182 if (user.Comment == password) // Case-sensitive
183 ...{
184 //user.LastLoginDate = DateTime.Now;
185 //UpdateUser(user);
186 return true;
187 }
188 }
189
190 return false;
191 } catch (Exception) ...{
192 return false;
193 }
194 }
195
196 /**//// <summary>
197 /// Retrieves a user based on his/hers username.
198 /// the userIsOnline parameter is ignored.
199 /// </summary>
200 public override MembershipUser GetUser(string username, bool userIsOnline) ...{
201 if (String.IsNullOrEmpty(username))
202 return null;
203
204 ReadMembershipDataStore();
205
206 // Retrieve the user from the data source
207 MembershipUser user;
208 if (_Users.TryGetValue(username, out user))
209 return user;
210
211 return null;
212 }
213
214 /**//// <summary>
215 /// Retrieves a collection of all the users.
216 /// This implementation ignores pageIndex and pageSize,
217 /// and it doesn't sort the MembershipUser objects returned.
218 /// </summary>
219 public override MembershipUserCollection GetAllUsers(int pageIndex, int pageSize, out int totalRecords) ...{
220 ReadMembershipDataStore();
221 MembershipUserCollection users = new MembershipUserCollection();
222
223 foreach (KeyValuePair<string, MembershipUser> pair in _Users) ...{
224 users.Add(pair.Value);
225 }
226
227 totalRecords = users.Count;
228 return users;
229 }
230
231 /**//// <summary>
232 /// Changes a users password.
233 /// </summary>
234 public override bool ChangePassword(string username, string oldPassword, string newPassword) ...{
235 XmlDocument doc = new XmlDocument();
236 doc.Load(_XmlFileName);
237 XmlNodeList nodes = doc.GetElementsByTagName("User");
238 foreach (XmlNode node in nodes) ...{
239 if (node["UserName"].InnerText.Equals(username, StringComparison.OrdinalIgnoreCase)
240 || node["Password"].InnerText.Equals(oldPassword, StringComparison.OrdinalIgnoreCase)) ...{
241 node["Password"].InnerText = newPassword;
242 doc.Save(_XmlFileName);
243
244 _Users = null;
245 ReadMembershipDataStore();
246 return true;
247 }
248 }
249
250 return false;
251 }
252
253 /**//// <summary>
254 /// Creates a new user store he/she in the XML file
255 /// </summary>
256 public override MembershipUser CreateUser(string username, string password, string email, string passwordQuestion, string passwordAnswer, bool isApproved, object providerUserKey, out MembershipCreateStatus status) ...{
257 XmlDocument doc = new XmlDocument();
258 doc.Load(_XmlFileName);
259
260 XmlNode xmlUserRoot = doc.CreateElement("User");
261 XmlNode xmlUserName = doc.CreateElement("UserName");
262 XmlNode xmlPassword = doc.CreateElement("Password");
263 XmlNode xmlEmail = doc.CreateElement("Email");
264 XmlNode xmlLastLoginTime = doc.CreateElement("LastLoginTime");
265
266 xmlUserName.InnerText = username;
267 xmlPassword.InnerText = password;
268 xmlEmail.InnerText = email;
269 xmlLastLoginTime.InnerText = DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss", CultureInfo.InvariantCulture);
270
271 xmlUserRoot.AppendChild(xmlUserName);
272 xmlUserRoot.AppendChild(xmlPassword);
273 xmlUserRoot.AppendChild(xmlEmail);
274 xmlUserRoot.AppendChild(xmlLastLoginTime);
275
276 doc.SelectSingleNode("Users").AppendChild(xmlUserRoot);
277 doc.Save(_XmlFileName);
278
279 status = MembershipCreateStatus.Success;
280 MembershipUser user = new MembershipUser(Name, username, username, email, passwordQuestion, password, isApproved, false, DateTime.Now, DateTime.Now, DateTime.Now, DateTime.Now, DateTime.MaxValue);
281 _Users.Add(username, user);
282 return user;
283 }
284
285 /**//// <summary>
286 /// Deletes the user from the XML file and
287 /// removes him/her from the internal cache.
288 /// </summary>
289 public override bool DeleteUser(string username, bool deleteAllRelatedData) ...{
290 XmlDocument doc = new XmlDocument();
291 doc.Load(_XmlFileName);
292
293 foreach (XmlNode node in doc.GetElementsByTagName("User")) ...{
294 if (node.ChildNodes[0].InnerText.Equals(username, StringComparison.OrdinalIgnoreCase)) ...{
295 doc.SelectSingleNode("Users").RemoveChild(node);
296 doc.Save(_XmlFileName);
297 _Users.Remove(username);
298 return true;
299 }
300 }
301
302 return false;
303 }
304
305 /**//// <summary>
306 /// Get a user based on the username parameter.
307 /// the userIsOnline parameter is ignored.
308 /// </summary>
309 public override MembershipUser GetUser(object providerUserKey, bool userIsOnline) ...{
310 if (providerUserKey == null)
311 throw new ArgumentNullException("providerUserKey");
312
313 XmlDocument doc = new XmlDocument();
314 doc.Load(_XmlFileName);
315
316 foreach (XmlNode node in doc.SelectNodes("//User")) ...{
317 if (node.ChildNodes[0].InnerText.Equals(providerUserKey.ToString(), StringComparison.OrdinalIgnoreCase)) ...{
318 string userName = node.ChildNodes[0].InnerText;
319 string password = node.ChildNodes[1].InnerText;
320 string email = node.ChildNodes[2].InnerText;
321 DateTime lastLoginTime = DateTime.Parse(node.ChildNodes[3].InnerText, CultureInfo.InvariantCulture);
322 return new MembershipUser(Name, providerUserKey.ToString(), providerUserKey, email, string.Empty, password, true, false, DateTime.Now, lastLoginTime, DateTime.Now, DateTime.Now, DateTime.MaxValue);
323 }
324 }
325
326 return default(MembershipUser);
327 }
328
329 /**//// <summary>
330 /// Retrieves a username based on a matching email.
331 /// </summary>
332 public override string GetUserNameByEmail(string email) ...{
333 if (email == null)
334 throw new ArgumentNullException("email");
335
336 XmlDocument doc = new XmlDocument();
337 doc.Load(_XmlFileName);
338
339 foreach (XmlNode node in doc.GetElementsByTagName("User")) ...{
340 if (node.ChildNodes[2].InnerText.Equals(email.Trim(), StringComparison.OrdinalIgnoreCase)) ...{
341 return node.ChildNodes[0].InnerText;
342 }
343 }
344
345 return null;
346 }
347
348 /**//// <summary>
349 /// Updates a user. The username will not be changed.
350 /// </summary>
351 public override void UpdateUser(MembershipUser user) ...{
352 XmlDocument doc = new XmlDocument();
353 doc.Load(_XmlFileName);
354
355 foreach (XmlNode node in doc.GetElementsByTagName("User")) ...{
356 if (node.ChildNodes[0].InnerText.Equals(user.UserName, StringComparison.OrdinalIgnoreCase)) ...{
357 if (user.Comment.Length > 30) ...{
358 node.ChildNodes[1].InnerText = user.Comment;
359 }
360 node.ChildNodes[2].InnerText = user.Email;
361 node.ChildNodes[3].InnerText = user.LastLoginDate.ToString("yyyy-MM-dd HH:mm:ss", CultureInfo.InvariantCulture);
362 doc.Save(_XmlFileName);
363 _Users[user.UserName] = user;
364 }
365 }
366 }
367
368 #endregion
369
370 Helper methods#region Helper methods
371
372 /**//// <summary>
373 /// Builds the internal cache of users.
374 /// </summary>
375 private void ReadMembershipDataStore() ...{
376 lock (this) ...{
377 if (_Users == null) ...{
378 _Users = new Dictionary<string, MembershipUser>(16, StringComparer.OrdinalIgnoreCase);
379 XmlDocument doc = new XmlDocument();
380 doc.Load(_XmlFileName);
381 XmlNodeList nodes = doc.GetElementsByTagName("User");
382
383 foreach (XmlNode node in nodes) ...{
384 MembershipUser user = new MembershipUser(
385 Name, // Provider name
386 node["UserName"].InnerText, // Username
387 node["UserName"].InnerText, // providerUserKey
388 node["Email"].InnerText, // Email
389 String.Empty, // passwordQuestion
390 node["Password"].InnerText, // Comment
391 true, // isApproved
392 false, // isLockedOut
393 DateTime.Now, // creationDate
394 DateTime.Parse(node["LastLoginTime"].InnerText, CultureInfo.InvariantCulture), // lastLoginDate
395 DateTime.Now, // lastActivityDate
396 DateTime.Now, // lastPasswordChangedDate
397 new DateTime(1980, 1, 1) // lastLockoutDate
398 );
399
400 _Users.Add(user.UserName, user);
401 }
402 }
403 }
404 }
405
406 /**////// <summary>
407 ///// Encrypts a string using the SHA256 algorithm.
408 ///// </summary>
409 //private static string Encrypt(string plainMessage)
410 //{
411 // byte[] data = Encoding.UTF8.GetBytes(plainMessage);
412 // using (HashAlgorithm sha = new SHA256Managed())
413 // {
414 // byte[] encryptedBytes = sha.TransformFinalBlock(data, 0, data.Length);
415 // return Convert.ToBase64String(sha.Hash);
416 // }
417 //}
418
419 #endregion
420
421 Unsupported methods#region Unsupported methods
422
423 /**//// <summary>
424 ///
425 /// </summary>
426 /// <param name="username"></param>
427 /// <param name="answer"></param>
428 /// <returns></returns>
429 public override string ResetPassword(string username, string answer) ...{
430 throw new NotSupportedException();
431 }
432
433 /**//// <summary>
434 ///
435 /// </summary>
436 /// <param name="userName"></param>
437 /// <returns></returns>
438 public override bool UnlockUser(string userName) ...{
439 throw new NotSupportedException();
440 }
441
442 /**//// <summary>
443 ///
444 /// </summary>
445 /// <param name="emailToMatch"></param>
446 /// <param name="pageIndex"></param>
447 /// <param name="pageSize"></param>
448 /// <param name="totalRecords"></param>
449 /// <returns></returns>
450 public override MembershipUserCollection FindUsersByEmail(string emailToMatch, int pageIndex, int pageSize, out int totalRecords) ...{
451 throw new NotSupportedException();
452 }
453
454 /**//// <summary>
455 ///
456 /// </summary>
457 /// <param name="usernameToMatch"></param>
458 /// <param name="pageIndex"></param>
459 /// <param name="pageSize"></param>
460 /// <param name="totalRecords"></param>
461 /// <returns></returns>
462 public override MembershipUserCollection FindUsersByName(string usernameToMatch, int pageIndex, int pageSize, out int totalRecords) ...{
463 throw new NotSupportedException();
464 }
465
466 /**//// <summary>
467 ///
468 /// </summary>
469 /// <returns></returns>
470 public override int GetNumberOfUsersOnline() ...{
471 throw new NotSupportedException();
472 }
473
474 /**//// <summary>
475 ///
476 /// </summary>
477 /// <param name="username"></param>
478 /// <param name="password"></param>
479 /// <param name="newPasswordQuestion"></param>
480 /// <param name="newPasswordAnswer"></param>
481 /// <returns></returns>
482 public override bool ChangePasswordQuestionAndAnswer(string username, string password, string newPasswordQuestion, string newPasswordAnswer) ...{
483 throw new NotSupportedException();
484 }
485
486 /**//// <summary>
487 ///
488 /// </summary>
489 /// <param name="username"></param>
490 /// <param name="answer"></param>
491 /// <returns></returns>
492 public override string GetPassword(string username, string answer) ...{
493 throw new NotSupportedException();
494 }
495
496 #endregion
497
498 }
499}
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