/// <summary>
/// Retrieves an enumeration of message details available in the specified catalog
/// </summary>
/// <param name="identity">The identity of the user making the request</param>
/// <param name="catalogName">The name of the catalog in which to retrieve message details</param>
/// <param name="fromId">The lower bound of the message identifier range to retrieve</param>
/// <param name="toId">If specified, the upper bound of the message identifier range to retrieve</param>
/// <returns>An enumeration of message details available in the specified catalog</returns>
public IEnumerable <IMessageDetail> GetMessageDetails(IIdentity identity, string catalogName, int fromId, int?toId)
{
// TODO: Add flags for virtual metagroups.
IList <IMessageDetail> articleFlags;
using (var session = SessionUtility.OpenSession())
{
var ng = session.Query <Newsgroup>().SingleOrDefault(n => n.Name == catalogName);
if (toId == null)
{
articleFlags = session.Query <ArticleFlag>()
.Where(af => af.Id == ng.Id)
.Where(af => af.Id >= fromId)
.OrderBy(af => af.Id)
.Cast <IMessageDetail>()
.ToList();
}
else
{
articleFlags = session.Query <ArticleFlag>()
.Where(af => af.Id == ng.Id)
.Where(af => af.Id >= fromId && af.Id <= toId.Value)
.OrderBy(af => af.Id)
.Cast <IMessageDetail>()
.ToList();
}
session.Close();
}
return(articleFlags);
}
/// <summary>
/// Deletes a subscription for a user from a catalog, indicating it is 'active' or 'subscribed' for that user
/// </summary>
/// <param name="identity">The identity of the user making the request</param>
/// <param name="catalogName">The name of the catalog in which to subscribe the user</param>
/// <returns>A value indicating whether the operation was successful</returns>
public bool DeleteSubscription(IIdentity identity, string catalogName)
{
var success = false;
try
{
using (var session = SessionUtility.OpenSession())
{
var owner = session.Query <User>().SingleOrDefault(u => u.Username == identity.Username);
if (owner != null)
{
var sub = session.Query <Subscription>().SingleOrDefault(s => s.Owner.Id == owner.Id && s.Newsgroup == catalogName);
if (sub != null)
{
session.Delete(sub);
session.Flush();
}
success = true;
}
session.Close();
}
}
catch (MappingException mex)
{
_Logger.Error("NHibernate Mapping Exception! (Is schema out of date or damaged?)", mex);
}
catch (Exception ex)
{
_Logger.Error("Exception when trying to handle UNSUBSCRIBE", ex);
}
return(success);
}
/// <summary>
/// Retrieves the list of catalogs a user has identified as 'active' or 'subscribed' for themselves
/// </summary>
/// <param name="identity">The identity of the user making the request</param>
/// <returns>A list of catalog names that are subscribed to by the specified <paramref name="identity"/></returns>
public IEnumerable <string> GetSubscriptions(IIdentity identity)
{
var subscriptions = new string[0];
try
{
using (var session = SessionUtility.OpenSession())
{
var owner = session.Query <User>().SingleOrDefault(u => u.Username == identity.Username);
if (owner != null)
{
subscriptions = session.Query <Subscription>().Where(ng => ng.Owner.Id == owner.Id).Select(ng => ng.Newsgroup).ToArray();
}
session.Close();
}
}
catch (MappingException mex)
{
_Logger.Error("NHibernate Mapping Exception! (Is schema out of date or damaged?)", mex);
}
catch (Exception ex)
{
_Logger.Error("Exception when trying to handle LSUB", ex);
}
return(subscriptions);
}
/// <summary>
/// Creates a subscription for a user to a catalog, indicating it is 'active' or 'subscribed' for that user
/// </summary>
/// <param name="identity">The identity of the user making the request</param>
/// <param name="catalogName">The name of the catalog in which to subscribe the user</param>
/// <returns>A value indicating whether the operation was successful</returns>
public bool CreateSubscription(IIdentity identity, string catalogName)
{
var success = false;
try
{
using (var session = SessionUtility.OpenSession())
{
var owner = session.Query <User>().SingleOrDefault(u => u.Username == identity.Username);
if (owner != null)
{
session.Save(new Subscription
{
Newsgroup = catalogName,
Owner = owner
});
success = true;
}
session.Close();
}
}
catch (MappingException mex)
{
_Logger.Error("NHibernate Mapping Exception! (Is schema out of date or damaged?)", mex);
}
catch (Exception ex)
{
_Logger.Error("Exception when trying to handle SUBSCRIBE", ex);
}
return(success);
}
/// <summary>
/// Retrieves a user by their clear-text username and password
/// </summary>
/// <param name="username">The username of the user</param>
/// <param name="password">The clear-text password of the user</param>
/// <returns>The user, if one was found with the matching username and password</returns>
public IIdentity GetIdentityByClearAuth(string username, string password)
{
User admin;
using (var session = SessionUtility.OpenSession())
{
admin = session.Query <User>().Fetch(a => a.Moderates).SingleOrDefault(a => a.Username == username);
if (admin != null)
{
admin.LastLogin = DateTime.UtcNow;
session.SaveOrUpdate(admin);
}
session.Close();
}
if (admin == null)
{
return(null);
}
if (admin.PasswordHash != Convert.ToBase64String(new SHA512CryptoServiceProvider().ComputeHash(Encoding.UTF8.GetBytes(string.Concat(admin.PasswordSalt, password)))))
{
_Logger.WarnFormat("User {0} failed authentication against local authentication database.", admin.Username);
return(null);
}
return(admin);
}
/// <summary>
/// Retrieves an enumeration of global catalogs available to an end-user at the root level in the store
/// </summary>
/// <param name="identity">The identity of the user making the request</param>
/// <param name="parentCatalogName">The parent catalog. When specified, this finds catalogs that are contained in this specified parent catalog</param>
/// <returns>An enumeration of catalogs available to an end-user at the root level in the store</returns>
public IEnumerable <ICatalog> GetGlobalCatalogs(IIdentity identity, string parentCatalogName)
{
IEnumerable <Newsgroup> newsGroups = null;
if (this.HierarchyDelimiter == "NIL")
{
return(null);
}
try
{
using (var session = SessionUtility.OpenSession())
{
newsGroups = session.Query <Newsgroup>()
.Where(n => n.Owner == null)
.ToList()
.Where(n =>
(parentCatalogName == null && (this.HierarchyDelimiter == "NIL" || n.Name.IndexOf(this.HierarchyDelimiter, StringComparison.OrdinalIgnoreCase) == -1)) ||
(parentCatalogName != null && (this.HierarchyDelimiter != "NIL" && n.Name.StartsWith(parentCatalogName + this.HierarchyDelimiter))))
.AddMetagroups(session, identity).OrderBy(n => n.Name).ToList();
session.Close();
}
}
catch (MappingException mex)
{
_Logger.Error("NHibernate Mapping Exception! (Is schema out of date or damaged?)", mex);
}
catch (Exception ex)
{
_Logger.Error("Exception when trying to handle LIST", ex);
}
return(newsGroups);
}
/// <summary>
/// Retrieves a catalog by its name
/// </summary>
/// <param name="identity">The identity of the user making the request</param>
/// <param name="name">The name of the catalog to retrieve</param>
/// <returns>The catalog with the specified <paramref name="name"/>, if one exists</returns>
public ICatalog GetCatalogByName(IIdentity identity, string name)
{
Newsgroup ng;
using (var session = SessionUtility.OpenSession())
{
ng = session.Query <Newsgroup>().AddMetagroups(session, identity).SingleOrDefault(n => n.Name == name);
session.Close();
}
return(ng);
}
/// <summary>
/// Creates a personal catalog
/// </summary>
/// <param name="identity">The identity of the user making the request</param>
/// <param name="catalogName">The name of the personal catalog</param>
/// <returns>A value indicating whether the operation was successful</returns>
public bool CreatePersonalCatalog(IIdentity identity, string catalogName)
{
if (string.Compare(catalogName, "INBOX", StringComparison.OrdinalIgnoreCase) == 0)
{
return(false);
}
try
{
using (var session = SessionUtility.OpenSession())
{
var owner = session.Query <User>().SingleOrDefault(u => u.Username == identity.Username);
if (owner == null)
{
return(false);
}
var catalog = session.Query <Newsgroup>().SingleOrDefault(ng => ng.Name == catalogName && ng.Owner.Id == owner.Id);
if (catalog != null)
{
return(false);
}
catalog = new Newsgroup
{
CreateDate = DateTime.UtcNow,
CreatorEntity = identity.Username,
DenyLocalPosting = false,
DenyPeerPosting = true,
Description = "Personal inbox for " + identity.Username,
Moderated = false,
Name = catalogName,
Owner = owner
};
session.Save(catalog);
session.Close();
}
}
catch (MappingException mex)
{
_Logger.Error("NHibernate Mapping Exception! (Is schema out of date or damaged?)", mex);
return(false);
}
catch (Exception ex)
{
_Logger.Error("Exception when trying to handle LIST", ex);
return(false);
}
return(true);
}
/// <summary>
/// Ensures a user has any requisite initialization in the store performed prior to their execution of other store methods
/// </summary>
/// <param name="identity">The identity of the user to ensure is initialized properly in the store</param>
public void Ensure(IIdentity identity)
{
var personalCatalogs = this.GetPersonalCatalogs(identity, null);
if (personalCatalogs != null && personalCatalogs.All(c => c.Name != "INBOX"))
{
using (var session = SessionUtility.OpenSession())
{
var ng = new Newsgroup
{
CreateDate = DateTime.UtcNow,
Description = "Personal inbox for " + identity.Username,
Name = "INBOX",
Owner = (User)identity
};
session.Save(ng);
session.Flush();
session.Close();
}
}
}
public static bool VerifyDatabase(bool quiet = false)
{
var configuration = new Configuration();
configuration.AddAssembly(typeof(Newsgroup).Assembly);
configuration.Configure();
//try
//{
// var validator = new SchemaValidator(configuration);
// validator.Validate();
//}
//catch (Exception ex)
//{
// _logger.Error("The database schema is out of date: " + ex.Message, ex);
// return false;
//}
try
{
using (var session = SessionUtility.OpenSession())
{
var newsgroupCount = session.Query <Newsgroup>().Count(n => n.Name != null);
if (newsgroupCount == 0 && !quiet)
{
_Logger.Warn("Verified database has 0 newsgroups");
}
else if (!quiet)
{
_Logger.InfoFormat("Verified database has {0} newsgroup{1}", newsgroupCount, newsgroupCount == 1 ? null : "s");
}
var articleCount = session.Query <Article>().Count(a => a.Headers != null);
var article = session.Query <Article>().FirstOrDefault(a => a.ArticleNewsgroups.Any(an => !an.Cancelled));
if (article != null)
{
var an = article.InjectionDate;
article.InjectionDate = "test";
session.Save(article);
article.InjectionDate = an;
session.Save(article);
}
if (!quiet)
{
_Logger.InfoFormat("Verified database has {0} article{1}", articleCount, articleCount == 1 ? null : "s");
}
var adminCount = session.Query <User>().Count(a => a.CanInject);
if (adminCount == 0 && !quiet)
{
_Logger.Warn("Verified database has 0 local admins");
}
else if (!quiet)
{
_Logger.InfoFormat("Verified database has {0} local admin{1}", adminCount, adminCount == 1 ? null : "s");
}
var peerCount = session.Query <Peer>().Count();
if (peerCount == 0 && !quiet)
{
_Logger.Warn("Verified database has 0 distribution patterns");
}
else if (!quiet)
{
_Logger.InfoFormat("Verified database has {0} distribution pattern{1}", peerCount, peerCount == 1 ? null : "s");
}
var distPatternCount = session.Query <DistributionPattern>().Count();
if (distPatternCount == 0 && !quiet)
{
_Logger.Warn("Verified database has 0 distribution patterns");
}
else if (!quiet)
{
_Logger.InfoFormat("Verified database has {0} distribution pattern{1}", distPatternCount, distPatternCount == 1 ? null : "s");
}
session.Close();
return(newsgroupCount > 0);
}
}
catch (Exception)
{
return(false);
}
}
private static void WriteBaselineData()
{
// Ensure placeholder data is there.
using (var session = SessionUtility.OpenSession())
{
if (!session.Query <Newsgroup>().Any(n => n.Name == "freenews.config"))
{
session.Save(new Newsgroup
{
CreateDate = DateTime.UtcNow,
Description = "Control group for the repository",
Moderated = true,
Name = "freenews.config"
});
_Logger.InfoFormat("Created 'freenews.config' group");
}
if (!session.Query <Newsgroup>().Any(n => n.Name == "freenews.misc"))
{
session.Save(new Newsgroup
{
CreateDate = DateTime.UtcNow,
Description = "Test group for the repository",
Moderated = false,
Name = "freenews.misc"
});
_Logger.InfoFormat("Created 'freenews.misc' group");
}
if (!session.Query <Newsgroup>().Any(n => n.Name == "junk"))
{
session.Save(new Newsgroup
{
CreateDate = DateTime.UtcNow,
Description = "Junk group for the repository",
Moderated = true,
Name = "junk"
});
_Logger.InfoFormat("Created 'junk' group");
}
if (!session.Query <User>().Any())
{
var admin = new User
{
CanApproveAny = true,
CanCancel = true,
CanCheckCatalogs = true,
CanCreateCatalogs = true,
CanDeleteCatalogs = true,
CanInject = true,
LocalAuthenticationOnly = true,
Username = "******"
};
var ss = new SecureString();
foreach (var c in "CHANGEME")
{
ss.AppendChar(c);
}
admin.SetPassword(ss);
session.Save(admin);
_Logger.InfoFormat("Created 'LOCALADMIN' administrator with password 'CHANGEME'. Please authenticate locally and change your password with a 'changepass' control message");
}
session.Close();
}
}
/// <summary>
/// Retrieves an enumeration of messages available in the specified catalog
/// </summary>
/// <param name="identity">The identity of the user making the request</param>
/// <param name="catalogName">The name of the catalog in which to retrieve messages</param>
/// <param name="fromId">The lower bound of the message identifier range to retrieve</param>
/// <param name="toId">If specified, the upper bound of the message identifier range to retrieve</param>
/// <returns>An enumeration of messages available in the specified catalog</returns>
public IEnumerable <IMessage> GetMessages(IIdentity identity, string catalogName, int fromId, int?toId)
{
IList <IMessage> articleNewsgroups;
using (var session = SessionUtility.OpenSession())
{
var ng = session.Query <Newsgroup>().AddMetagroups(session, identity).SingleOrDefault(n => n.Name == catalogName);
if (toId == null)
{
if (catalogName.EndsWith(".deleted"))
{
articleNewsgroups = session.Query <ArticleNewsgroup>()
.Where(an => an.Newsgroup.Name == ng.Name.Substring(0, ng.Name.Length - 8) && an.Cancelled)
.Where(an => an.Number >= fromId)
.OrderBy(an => an.Number)
.Cast <IMessage>()
.ToList();
}
else if (catalogName.EndsWith(".pending"))
{
articleNewsgroups = session.Query <ArticleNewsgroup>()
.Where(an => an.Newsgroup.Name == ng.Name.Substring(0, ng.Name.Length - 8) && an.Pending)
.Where(an => an.Number >= fromId)
.OrderBy(an => an.Number)
.Cast <IMessage>()
.ToList();
}
else
{
articleNewsgroups = session.Query <ArticleNewsgroup>()
.Where(an => an.Newsgroup.Name == ng.Name && !an.Cancelled && !an.Pending)
.Where(an => an.Number >= fromId)
.OrderBy(an => an.Number)
.Cast <IMessage>()
.ToList();
}
}
else
{
if (catalogName.EndsWith(".deleted"))
{
articleNewsgroups = session.Query <ArticleNewsgroup>()
.Where(an => an.Newsgroup.Name == ng.Name.Substring(0, ng.Name.Length - 8) && an.Cancelled)
.Where(an => an.Number >= fromId && an.Number <= toId.Value)
.OrderBy(an => an.Number)
.Cast <IMessage>()
.ToList();
}
else if (catalogName.EndsWith(".pending"))
{
articleNewsgroups = session.Query <ArticleNewsgroup>()
.Where(an => an.Newsgroup.Name == ng.Name.Substring(0, ng.Name.Length - 8) && an.Pending)
.Where(an => an.Number >= fromId && an.Number <= toId.Value)
.OrderBy(an => an.Number)
.Cast <IMessage>()
.ToList();
}
else
{
articleNewsgroups = session.Query <ArticleNewsgroup>()
.Where(an => an.Newsgroup.Name == ng.Name && !an.Cancelled && !an.Pending)
.Where(an => an.Number >= fromId && an.Number <= toId.Value)
.OrderBy(an => an.Number)
.Cast <IMessage>()
.ToList();
}
}
session.Close();
}
return(articleNewsgroups);
}
