/// <summary>
/// Creates protocol unit for posting article to server
/// </summary>
/// <param name="draftArticle"></param>
/// <param name="server"></param>
/// <param name="finishedMethod">can be null</param>
public NntpPostArticleUnit(IResource draftArticle,
IResource server,
AsciiProtocolUnitDelegate finishedMethod,
bool invokedByUser)
{
_draftArticle = draftArticle;
_server = new ServerResource(server);
_invokedByUser = invokedByUser;
_error = "Failed to connect, posting abandoned.";
if (finishedMethod != null)
{
Finished += finishedMethod;
}
}
private static void ParseNewsgroups(IResource article, IResource groupRes, ServerResource serverRes, string newsgroups)
{
string[] groups = newsgroups.Split(',');
foreach (string group in groups)
{
bool groupFound = false;
foreach (IResource res in serverRes.Groups)
{
if (groupRes != res &&
String.Compare(group, res.GetPropText(Core.Props.Name), true) == 0 &&
new NewsgroupResource(res).IsSubscribed)
{
article.AddLink(NntpPlugin._propTo, res);
groupFound = true;
break;
}
}
if (!groupFound)
{
IResource fakeGroup = null;
IResourceList fakeGroups = Core.ResourceStore.FindResources(
NntpPlugin._newsGroup, Core.Props.Name, group);
if (fakeGroups.Count == 0)
{
fakeGroup = Core.ResourceStore.NewResource(NntpPlugin._newsGroup);
fakeGroup.SetProp(Core.Props.Name, group);
}
else
{
foreach (IResource res in fakeGroups)
{
if (fakeGroup == null || res.HasProp(Core.Props.Parent))
{
fakeGroup = res;
if (res.HasProp(Core.Props.Parent))
{
break;
}
}
}
}
article.AddLink(NntpPlugin._propTo, fakeGroup);
}
}
}
public NntpDownloadGroupsUnit(IResource server, bool refresh, JobPriority priority)
{
Interlocked.Increment(ref NntpPlugin._deliverNewsUnitCount);
_serverResource = new ServerResource(server);
Core.UIManager.GetStatusWriter(typeof(NntpDownloadGroupsUnit),
StatusPane.Network).ShowStatus("Downloading groups from " + _serverResource.DisplayName + "...");
_priority = priority;
_nntpCmd = "list";
if (!refresh)
{
DateTime lastUpdated = _serverResource.LastUpdateTime;
if (lastUpdated > DateTime.MinValue)
{
_nntpCmd = "newgroups " + ParseTools.NNTPDateString(lastUpdated);
}
}
_count = 0;
_responseChecked = false;
_groupList = new ArrayList();
_groupListLock = new SpinWaitLock();
_flushGroupListDelegate = new MethodInvoker(FlushGroupList);
}
public NntpConnection(ServerResource server)
: base(server.Name, server.Port)
{
_server = server;
_serverProxy = new ResourceProxy(server.Resource);
this.Timeout = Timeout = Core.SettingStore.ReadInt("NNTP", "Timeout", 60) * 1000;
TraceProtocol = Settings.Trace;
SSL3Enabled = server.SSL3Enabled;
_state = NntpConnectionState.Connecting;
System.Diagnostics.Trace.WriteLine(Server + ":" + Port + ": Connecting to server...");
_serverProxy.DeletePropAsync(Core.Props.LastError);
DoConnect();
if (!_server.Resource.IsDeleted)
{
string username = _server.LoginName;
if (username.Length > 0)
{
DoAuthenticate(username, _server.Password);
}
StartUnit(Int32.MaxValue, new AsciiSendLineGetLineUnit("mode reader"));
}
}
public override void DisplayResource(IResource article, WordPtr[] wordsToHighlight)
{
if (_downloadLabel == null)
{
_downloadLabel = new JetLinkLabel();
_downloadLabel.Text = "Click here or press F5 to download the article";
_downloadLabel.BackColor = Color.Transparent;
_downloadLabel.ClickableLink = true;
_downloadLabel.Click += _downloadLabel_Click;
Controls.Add(_downloadLabel);
}
_downloadLabel.Visible = false;
_ieBrowser.Visible = true;
bool redisplayed = _articleIsRedisplayed;
_articleIsRedisplayed = false;
DisposeArticleListener();
// Set the subject, highlight if needed
ShowSubject(article.GetPropText(Core.Props.Subject), wordsToHighlight);
try
{
// The content being indexed (plaintext) is not the same that is
// displayed (autogenerated HTML), so the offsets are updated by
// this method to correspond to the new formatting.
string sFormattedArticle = ArticleBody2Html(article, ref wordsToHighlight);
ShowHtml(sFormattedArticle, _ctxRestricted, wordsToHighlight);
}
catch (Exception e)
{
Utils.DisplayException(e, "Error");
return;
}
/**
* set last selected article for article's owner
*/
IResource owner = _rbrowser.OwnerResource;
if (owner != null && (owner.Type == NntpPlugin._newsGroup ||
owner.Type == NntpPlugin._newsFolder || owner.Type == NntpPlugin._newsServer))
{
ResourceProxy proxy = new ResourceProxy(owner);
proxy.AsyncPriority = JobPriority.AboveNormal;
proxy.SetPropAsync(NntpPlugin._propLastSelectedArticle, article.Id);
}
_articleListener = article.ToResourceListLive();
_articleListener.ResourceChanged += _articleListener_ResourceChanged;
bool hasNoBody = article.HasProp(NntpPlugin._propHasNoBody);
if (!hasNoBody)
{
Core.UIManager.GetStatusWriter(this, StatusPane.Network).ClearStatus();
}
else
{
if (!Utils.IsNetworkConnectedLight())
{
ShowHtml("<pre>" + NntpPlugin._networkUnavailable + ".</pre>", WebSecurityContext.Internet, null);
return;
}
IResourceList groups = article.GetLinksOfType(NntpPlugin._newsGroup, NntpPlugin._propTo);
if (groups.Count > 0)
{
foreach (IResource groupRes in groups.ValidResources)
{
IResource server = new NewsgroupResource(groupRes).Server;
if (server != null)
{
ServerResource serverRes = new ServerResource(server);
if (redisplayed || serverRes.DownloadBodiesOnDeliver || serverRes.DownloadBodyOnSelection)
{
Core.UIManager.GetStatusWriter(this, StatusPane.Network).ShowStatus("Downloading article...");
NntpConnection articlesConnection = NntpConnectionPool.GetConnection(server, "foreground");
NntpDownloadArticleUnit downloadUnit =
new NntpDownloadArticleUnit(article, groupRes, JobPriority.Immediate, true);
downloadUnit.OnProgress += downloadUnit_OnProgress;
ShowHtml("<pre>Downloading article: 0%</pre>", WebSecurityContext.Internet, null);
articlesConnection.StartUnit(Int32.MaxValue - 1, downloadUnit);
return;
}
}
}
if (!redisplayed)
{
Point location = _ieBrowser.Location;
_downloadLabel.Location = new Point(location.X + 8, location.Y + 8);
_downloadLabel.Visible = true;
_ieBrowser.Visible = false;
}
}
}
}
/**
* all article's processing should be performed in the resource thread
* this function is called if article is downloaded from a group
*/
public static void CreateArticle(string[] lines, IResource groupRes, string articleId)
{
// if user has already unsubscribed from the group or the
// groups is already deleted then skip the article
IResource server = new NewsgroupResource(groupRes).Server;
if (server == null)
{
return;
}
articleId = ParseTools.EscapeCaseSensitiveString(articleId);
// is article deleted?
if (NewsArticleHelper.IsArticleDeleted(articleId))
{
return;
}
PrepareLines(lines);
try
{
ServerResource serverRes = new ServerResource(server);
string charset = serverRes.Charset;
bool bodyStarted = false;
string line;
string content_type = string.Empty;
string content_transfer_encoding = string.Empty;
IContact sender = null;
DateTime date = DateTime.MinValue;
bool mySelf = false;
bool newArticle;
IResource article = Core.ResourceStore.FindUniqueResource(
NntpPlugin._newsArticle, NntpPlugin._propArticleId, articleId);
if (article != null)
{
if (!article.HasProp(NntpPlugin._propHasNoBody))
{
return;
}
article.BeginUpdate();
newArticle = false;
}
else
{
article = Core.ResourceStore.BeginNewResource(NntpPlugin._newsArticle);
newArticle = true;
}
for (int i = 0; i < lines.Length; ++i)
{
line = lines[i];
if (line == null)
{
continue;
}
if (bodyStarted)
{
_bodyBuilder.Append(line);
}
else
{
_headersBuilder.Append(line);
_headersBuilder.Append("\r\n");
if (Utils.StartsWith(line, "from: ", true))
{
string from = line.Substring(6);
article.SetProp(NntpPlugin._propRawFrom, from);
mySelf = ParseFrom(article, TranslateHeader(charset, from), out sender);
UpdateLastCorrespondDate(sender, date);
}
else if (Utils.StartsWith(line, "subject: ", true))
{
string subject = line.Substring(9);
article.SetProp(NntpPlugin._propRawSubject, subject);
article.SetProp(Core.Props.Subject, TranslateHeader(charset, subject));
}
else if (Utils.StartsWith(line, "message-id: ", true))
{
ParseMessageId(article, ParseTools.EscapeCaseSensitiveString(line.Substring(12)), articleId);
}
else if (Utils.StartsWith(line, "newsgroups: ", true))
{
if (line.IndexOf(',') > 12)
{
ParseNewsgroups(article, groupRes, serverRes, line.Substring(12));
}
}
else if (Utils.StartsWith(line, "date: ", true))
{
date = ParseDate(article, line.Substring(6));
UpdateLastCorrespondDate(sender, date);
}
else if (Utils.StartsWith(line, "references: ", true))
{
ParseReferences(article, line.Substring(12));
}
else if (Utils.StartsWith(line, "content-type: ", true))
{
content_type = line.Substring(14);
}
else if (Utils.StartsWith(line, "followup-to: ", true))
{
article.SetProp(NntpPlugin._propFollowupTo, line.Substring(13));
}
else if (Utils.StartsWith(line, "content-transfer-encoding: ", true))
{
content_transfer_encoding = line.Substring(27);
}
else if (line == "\r\n")
{
bodyStarted = true;
}
}
}
ProcessBody(_bodyBuilder.ToString(), content_type, content_transfer_encoding, article, charset);
article.SetProp(NntpPlugin._propArticleHeaders, _headersBuilder.ToString());
article.AddLink(NntpPlugin._propTo, groupRes);
if (article.GetPropText(NntpPlugin._propArticleId).Length == 0)
{
article.SetProp(NntpPlugin._propArticleId, articleId);
}
if (newArticle)
{
article.SetProp(NntpPlugin._propIsUnread, true);
IResourceList categories = Core.CategoryManager.GetResourceCategories(groupRes);
foreach (IResource category in categories)
{
Core.CategoryManager.AddResourceCategory(article, category);
}
Core.FilterEngine.ExecRules(StandardEvents.ResourceReceived, article);
CleanLocalArticle(articleId, article);
}
article.EndUpdate();
CheckArticleInIgnoredThreads(article);
CheckArticleInSelfThread(article);
if (mySelf && serverRes.MarkFromMeAsRead)
{
article.BeginUpdate();
article.DeleteProp(NntpPlugin._propIsUnread);
article.EndUpdate();
}
Core.TextIndexManager.QueryIndexing(article.Id);
}
finally
{
DisposeStringBuilders();
}
}
public static void CreateArticleFromHeaders(string line, IResource groupRes)
{
string[] headers = line.Split('\t');
if (headers.Length <= 5)
{
return;
}
string articleId = ParseTools.EscapeCaseSensitiveString(headers[4]);
if (articleId.Length == 0 || NewsArticleHelper.IsArticleDeleted(articleId))
{
return;
}
// if user has already unsubscribed from the group or the
// groups is already deleted then skip the article
IResource server = new NewsgroupResource(groupRes).Server;
if (server == null)
{
return;
}
// is article deleted?
if (NewsArticleHelper.IsArticleDeleted(articleId))
{
return;
}
IResource article;
IContact sender;
bool mySelf;
bool newArticle;
string charset = new ServerResource(server).Charset;
article = Core.ResourceStore.FindUniqueResource(
NntpPlugin._newsArticle, NntpPlugin._propArticleId, articleId);
if (article != null)
{
article.BeginUpdate();
newArticle = false;
}
else
{
article = Core.ResourceStore.BeginNewResource(NntpPlugin._newsArticle);
newArticle = true;
}
article.SetProp(NntpPlugin._propHasNoBody, true);
NewsArticleHelper.SetArticleNumber(article, groupRes, headers[0]);
DateTime date = ParseDate(article, headers[3]);
string from = headers[2];
article.SetProp(NntpPlugin._propRawFrom, from);
mySelf = ParseFrom(article, TranslateHeader(charset, from), out sender);
string subject = headers[1];
article.SetProp(NntpPlugin._propRawSubject, subject);
article.SetProp(Core.Props.Subject, TranslateHeader(charset, subject));
UpdateLastCorrespondDate(sender, date);
ParseMessageId(article, articleId, articleId);
string references = headers[5];
if (references.Length > 0)
{
ParseReferences(article, references);
}
article.AddLink(NntpPlugin._propTo, groupRes);
if (newArticle)
{
article.SetProp(NntpPlugin._propIsUnread, true);
IResourceList categories = Core.CategoryManager.GetResourceCategories(groupRes);
foreach (IResource category in categories)
{
Core.CategoryManager.AddResourceCategory(article, category);
}
Core.FilterEngine.ExecRules(StandardEvents.ResourceReceived, article);
CleanLocalArticle(articleId, article);
}
article.EndUpdate();
if (mySelf && new ServerResource(server).MarkFromMeAsRead)
{
article.BeginUpdate();
article.DeleteProp(NntpPlugin._propIsUnread);
article.EndUpdate();
}
Core.TextIndexManager.QueryIndexing(article.Id);
}
/**
* this function is called if article is downloaded from a group
* article should be a newly created transient resource
*/
public static void CreateArticleByProtocolHandler(string[] lines, IResource article)
{
if (!article.IsTransient)
{
throw new ArgumentException("Article should be a newly created transient resource", "article");
}
string articleId = article.GetPropText(NntpPlugin._propArticleId);
if (Core.ResourceStore.FindUniqueResource(
NntpPlugin._newsArticle, NntpPlugin._propArticleId, articleId) != null)
{
return;
}
PrepareLines(lines);
try
{
IResource server = article.GetLinkProp(NntpPlugin._propTo);
string charset = new ServerResource(server).Charset;
bool bodyStarted = false;
string line;
string content_type = string.Empty;
string content_transfer_encoding = string.Empty;
IContact sender = null;
DateTime date = DateTime.MinValue;
bool mySelf = false;
for (int i = 0; i < lines.Length; ++i)
{
line = lines[i];
if (line == null)
{
continue;
}
if (bodyStarted)
{
_bodyBuilder.Append(line);
}
else
{
_headersBuilder.Append(line);
_headersBuilder.Append("\r\n");
if (Utils.StartsWith(line, "from: ", true))
{
string from = line.Substring(6);
article.SetProp(NntpPlugin._propRawFrom, from);
mySelf = ParseFrom(article, TranslateHeader(charset, from), out sender);
UpdateLastCorrespondDate(sender, date);
}
else if (Utils.StartsWith(line, "subject: ", true))
{
string subject = line.Substring(9);
article.SetProp(NntpPlugin._propRawSubject, subject);
article.SetProp(Core.Props.Subject, TranslateHeader(charset, subject));
}
else if (Utils.StartsWith(line, "message-id: ", true))
{
ParseMessageId(article, ParseTools.EscapeCaseSensitiveString(line.Substring(12)), articleId);
}
else if (Utils.StartsWith(line, "newsgroups: ", true))
{
Subscribe2Groups(article, line.Substring(12));
}
else if (Utils.StartsWith(line, "date: ", true))
{
date = ParseDate(article, line.Substring(6));
UpdateLastCorrespondDate(sender, date);
}
else if (Utils.StartsWith(line, "references: ", true))
{
ParseReferences(article, line.Substring(12));
}
else if (Utils.StartsWith(line, "content-type: ", true))
{
content_type = line.Substring(14);
}
else if (Utils.StartsWith(line, "followup-to: ", true))
{
article.SetProp(NntpPlugin._propFollowupTo, line.Substring(13));
}
else if (Utils.StartsWith(line, "content-transfer-encoding: ", true))
{
content_transfer_encoding = line.Substring(27);
}
else if (line == "\r\n")
{
bodyStarted = true;
}
}
}
ProcessBody(_bodyBuilder.ToString(), content_type, content_transfer_encoding, article, charset);
article.SetProp(NntpPlugin._propArticleHeaders, _headersBuilder.ToString());
article.SetProp(NntpPlugin._propIsUnread, true);
Core.FilterEngine.ExecRules(StandardEvents.ResourceReceived, article);
CleanLocalArticle(articleId, article);
article.EndUpdate();
if (mySelf && new ServerResource(server).MarkFromMeAsRead)
{
article.BeginUpdate();
article.DeleteProp(NntpPlugin._propIsUnread);
article.EndUpdate();
}
Core.TextIndexManager.QueryIndexing(article.Id);
}
finally
{
DisposeStringBuilders();
}
}
public static void DeliverNewsFromServer(IResource server,
IResource preferableGroup,
bool invokedByUser,
AsciiProtocolUnitDelegate finishedMethod)
{
Guard.NullArgument(server, "server");
ServerResource serverResource = new ServerResource(server);
if (Utils.IsNetworkConnectedLight())
{
NntpConnection connection = NntpConnectionPool.GetConnection(server, "background");
IResourceList groups = serverResource.Groups;
if (groups.Count > 0)
{
/**
* at first deliver news from prefered group
*/
if (preferableGroup != null && groups.Contains(preferableGroup))
{
connection.StartUnit(Int32.MaxValue - 2,
new NntpDownloadHeadersUnit(new NewsgroupResource(preferableGroup), JobPriority.AboveNormal));
if (serverResource.DownloadBodiesOnDeliver)
{
connection.StartUnit(Int32.MaxValue - 3,
new NntpDeliverEmptyArticlesFromGroupsUnit(preferableGroup.ToResourceList(), null));
}
}
/**
* then deliver headers of other groups
*/
NntpDeliverHeadersFromGroupsUnit deliverHeadersFromGroupsUnit =
new NntpDeliverHeadersFromGroupsUnit(groups, preferableGroup);
if (finishedMethod != null)
{
deliverHeadersFromGroupsUnit.Finished += finishedMethod;
}
int clientPriority = 0;
if (invokedByUser && preferableGroup != null && groups.Contains(preferableGroup))
{
clientPriority = Int32.MaxValue - 3;
}
connection.StartUnit(clientPriority, deliverHeadersFromGroupsUnit);
/**
* then download empty bodies
*/
if (serverResource.DownloadBodiesOnDeliver)
{
NntpDeliverEmptyArticlesFromGroupsUnit deliverEmptyArticlesUnit =
new NntpDeliverEmptyArticlesFromGroupsUnit(groups, preferableGroup);
if (finishedMethod != null)
{
deliverEmptyArticlesUnit.Finished += finishedMethod;
}
connection.StartUnit(clientPriority, deliverEmptyArticlesUnit);
}
}
/**
* finally replicate new groups
*/
NntpDownloadGroupsUnit groupsUnit = new NntpDownloadGroupsUnit(server, false, JobPriority.Lowest);
if (finishedMethod != null)
{
groupsUnit.Finished += finishedMethod;
}
connection.StartUnit(0, groupsUnit);
}
/**
* queue timed news delivering is necessary
*/
int freq = serverResource.DeliverFreq;
if (freq > 0)
{
Core.NetworkAP.QueueJobAt(
DateTime.Now.AddMinutes(freq), new ResourceDelegate(DeliverNewsFromServer), server);
}
}
