public void SendChatMessage(string name, string message, string subverseName)
{
if (message == null)
{
return;
}
message = message.Trim();
if (!String.IsNullOrEmpty(name) && message != String.Empty && !String.IsNullOrEmpty(subverseName))
{
// check if user is banned
if (User.IsUserBannedFromSubverse(Context.User.Identity.Name, subverseName))
{
// message won't be processed
// this is necessary because banning a user from a subverse doesn't kick them from chat
return;
}
// discard message if it contains unicode
if (Submissions.ContainsUnicode(message))
{
return;
}
// trim message to 200 characters
if (message.Length > 200)
{
message = message.Substring(0, 200);
}
// check if previous message from this user is in cache
//if (messageCache.ContainsKey(name))
//{
// // discard duplicate message and update timestamp
// if (message == messageCache[name].Item1)
// {
// messageCache.Remove(name);
// messageCache.Add(name, new Tuple<string, DateTime>(message, DateTime.UtcNow));
// return;
// }
// // check timestamp and discard if diff less than 5 seconds
// var timestamp = messageCache[name].Item2;
// if (timestamp.AddSeconds(5) < DateTime.UtcNow)
// {
// return;
// }
//}
messageCache.Add(name, new Tuple <string, DateTime>(message, DateTime.UtcNow));
var htmlEncodedMessage = WebUtility.HtmlEncode(message);
Clients.Group(subverseName).appendChatMessage(Context.User.Identity.Name, htmlEncodedMessage);
}
}
public void TestUnicodeDetection()
{
const string testString = "🆆🅰🆂 🅶🅴🆃🆃🅸🅽🅶 🅲🅰🆄🅶🅷🆃 🅿🅰🆁🆃 🅾🅵 🆈🅾🆄🆁 🅿🅻🅰🅽🅴";
const string testStringWithoutUnicode = "was getting caught part of your plane";
bool result = Submissions.ContainsUnicode(testString);
Assert.IsTrue(result, "Unicode was not detected.");
bool resultWithoutUnicode = Submissions.ContainsUnicode(testStringWithoutUnicode);
Assert.IsFalse(resultWithoutUnicode, "Unicode was not detected.");
}
public ActionResult Submit([Bind(Include = "Id,Votes,Name,Date,Type,Linkdescription,Title,Rank,MessageContent,Subverse")] Message message)
{
// abort if model state is invalid
if (!ModelState.IsValid)
{
return(View());
}
// save temp values for the view in case submission fails
ViewBag.selectedSubverse = message.Subverse;
ViewBag.message = message.MessageContent;
ViewBag.title = message.Title;
ViewBag.linkDescription = message.Linkdescription;
// check if user is banned
if (Utils.User.IsUserGloballyBanned(message.Name) || Utils.User.IsUserBannedFromSubverse(User.Identity.Name, message.Subverse))
{
ViewBag.SelectedSubverse = message.Subverse;
return(View("~/Views/Home/Comments.cshtml", message));
}
// check if user has reached hourly posting quota for target subverse
if (Utils.User.UserHourlyPostingQuotaForSubUsed(User.Identity.Name, message.Subverse))
{
ModelState.AddModelError("", "You have reached your hourly submission quota for this subverse.");
return(View());
}
// check if user has reached daily posting quota for target subverse
if (Utils.User.UserDailyPostingQuotaForSubUsed(User.Identity.Name, message.Subverse))
{
ModelState.AddModelError("", "You have reached your daily submission quota for this subverse.");
return(View());
}
// verify recaptcha if user has less than 25 CCP
var userCcp = Karma.CommentKarma(User.Identity.Name);
if (userCcp < 25)
{
string encodedResponse = Request.Form["g-Recaptcha-Response"];
bool isCaptchaCodeValid = (ReCaptchaUtility.Validate(encodedResponse) == "True" ? true : false);
if (!isCaptchaCodeValid)
{
ModelState.AddModelError("", "Incorrect recaptcha answer.");
// TODO
// SET PREVENT SPAM DELAY TO 0
return(View());
}
}
// if user CCP or SCP is less than -50, allow only X submissions per 24 hours
var userScp = Karma.LinkKarma(User.Identity.Name);
if (userCcp <= -50 || userScp <= -50)
{
var quotaUsed = Utils.User.UserDailyPostingQuotaForNegativeScoreUsed(User.Identity.Name);
if (quotaUsed)
{
ModelState.AddModelError("", "You have reached your daily submission quota. Your current quota is " + Convert.ToInt32(ConfigurationManager.AppSettings["dailyPostingQuotaForNegativeScore"]) + " submission(s) per 24 hours.");
return(View());
}
}
// abort if model state is invalid
if (!ModelState.IsValid)
{
return(View("Submit"));
}
// check if subverse exists
var targetSubverse = _db.Subverses.Find(message.Subverse.Trim());
if (targetSubverse == null || message.Subverse.Equals("all", StringComparison.OrdinalIgnoreCase))
{
ModelState.AddModelError(string.Empty, "Sorry, The subverse you are trying to post to does not exist.");
return(View("Submit"));
}
// check if subverse has "authorized_submitters_only" set and dissalow submission if user is not allowed submitter
if (targetSubverse.authorized_submitters_only)
{
if (!Utils.User.IsUserSubverseModerator(User.Identity.Name, targetSubverse.name))
{
// user is not a moderator, check if user is an administrator
if (!Utils.User.IsUserSubverseAdmin(User.Identity.Name, targetSubverse.name))
{
ModelState.AddModelError("", "You are not authorized to submit links or start discussions in this subverse. Please contact subverse moderators for authorization.");
return(View("Submit"));
}
}
}
// everything was okay, process incoming submission
// submission is a link post
// generate a thumbnail if submission is a direct link to image or video
if (message.Type == 2 && message.MessageContent != null && message.Linkdescription != null)
{
// strip unicode if title contains unicode
if (Submissions.ContainsUnicode(message.Linkdescription))
{
message.Linkdescription = Submissions.StripUnicode(message.Linkdescription);
}
// abort if title less than 10 characters
if (message.Linkdescription.Length < 10)
{
ModelState.AddModelError(string.Empty, "Sorry, the title may not be less than 10 characters.");
return(View("Submit"));
}
var domain = UrlUtility.GetDomainFromUri(message.MessageContent);
// check if target subvere allows submissions from globally banned hostnames
if (!targetSubverse.exclude_sitewide_bans)
{
// check if hostname is banned before accepting submission
if (BanningUtility.IsHostnameBanned(domain))
{
ModelState.AddModelError(string.Empty, "Sorry, the hostname you are trying to submit is banned.");
return(View("Submit"));
}
}
// check if same link was submitted before and deny submission
var existingSubmission = _db.Messages.FirstOrDefault(s => s.MessageContent.Equals(message.MessageContent, StringComparison.OrdinalIgnoreCase) && s.Subverse.Equals(message.Subverse, StringComparison.OrdinalIgnoreCase));
// submission is a repost, discard it and inform the user
if (existingSubmission != null)
{
ModelState.AddModelError(string.Empty, "Sorry, this link has already been submitted by someone else.");
// todo: offer the option to repost after informing the user about it
return(RedirectToRoute(
"SubverseComments",
new
{
controller = "Comment",
action = "Comments",
id = existingSubmission.Id,
subversetoshow = existingSubmission.Subverse
}
));
}
// check if user has reached daily crossposting quota
if (Utils.User.DailyCrossPostingQuotaUsed(User.Identity.Name, message.MessageContent))
{
ModelState.AddModelError("", "You have reached your daily crossposting quota for this URL.");
return(View());
}
// check if target subverse has thumbnails setting enabled before generating a thumbnail
if (targetSubverse.enable_thumbnails)
{
// try to generate and assign a thumbnail to submission model
message.Thumbnail = ThumbGenerator.ThumbnailFromSubmissionModel(message);
}
// flag the submission as anonymized if it was submitted to a subverse with active anonymized_mode
if (targetSubverse.anonymized_mode)
{
message.Anonymized = true;
}
else
{
message.Name = User.Identity.Name;
}
// accept submission and save it to the database
message.Subverse = targetSubverse.name;
// grab server timestamp and modify submission timestamp to have posting time instead of "started writing submission" time
message.Date = DateTime.Now;
message.Likes = 1;
_db.Messages.Add(message);
// update last submission received date for target subverse
targetSubverse.last_submission_received = DateTime.Now;
_db.SaveChanges();
}
else if (message.Type == 1 && message.Title != null)
{
// submission is a self post
// strip unicode if message contains unicode
if (Submissions.ContainsUnicode(message.Title))
{
message.Title = Submissions.StripUnicode(message.Title);
}
// abort if title less than 10 characters
if (message.Title.Length < 10)
{
ModelState.AddModelError(string.Empty, "Sorry, the the message title may not be less than 10 characters.");
return(View("Submit"));
}
// accept submission and save it to the database
// trim trailing blanks from subverse name if a user mistakenly types them
message.Subverse = targetSubverse.name;
// flag the submission as anonymized if it was submitted to a subverse with active anonymized_mode
if (targetSubverse.anonymized_mode)
{
message.Anonymized = true;
}
else
{
message.Name = User.Identity.Name;
}
// grab server timestamp and modify submission timestamp to have posting time instead of "started writing submission" time
message.Date = DateTime.Now;
message.Likes = 1;
_db.Messages.Add(message);
// update last submission received date for target subverse
targetSubverse.last_submission_received = DateTime.Now;
if (ContentProcessor.Instance.HasStage(ProcessingStage.InboundPreSave))
{
message.MessageContent = ContentProcessor.Instance.Process(message.MessageContent, ProcessingStage.InboundPreSave, message);
}
_db.SaveChanges();
if (ContentProcessor.Instance.HasStage(ProcessingStage.InboundPostSave))
{
ContentProcessor.Instance.Process(message.MessageContent, ProcessingStage.InboundPostSave, message);
}
}
return(RedirectToRoute(
"SubverseComments",
new
{
controller = "Comment",
action = "Comments",
id = message.Id,
subversetoshow = message.Subverse
}
));
}