public void HtmlAttributeFilterTest()
{
ValidTagCollection tags = new ValidTagCollection("a@href@title,img@src");
string one = "aa<a href=\"attValue\" title=\"attTitle\">bb</a>";
string one_result = one;
Assert.AreEqual(one_result, SiteUtilities.FilterHtml(one, tags), "Test one failed.");
string two = "aa<a onclick=\"evil javascript\" href=\"link\">bb</a>";
string two_result = "aa<a href=\"link\">bb</a>";
Assert.AreEqual(two_result, SiteUtilities.FilterHtml(two, tags), "Test two failed.");
string three = "aa<a href=attValue title=attTitle>bb</a>";
string three_result = "aa<a href=\"attValue\" title=\"attTitle\">bb</a>";
Assert.AreEqual(three_result, SiteUtilities.FilterHtml(three, tags), "Test three failed.");
string four = "aa<a href title=\"title\">bb</a>";
string four_result = "aa<a title=\"title\">bb</a>";
Assert.AreEqual(four_result, SiteUtilities.FilterHtml(four, tags), "Test four failed.");
string five = "aa<a title=\"title\" href>bb</a>";
string five_result = "aa<a title=\"title\">bb</a>";
Assert.AreEqual(five_result, SiteUtilities.FilterHtml(five, tags), "Test five failed.");
}
public void HtmlFilterTests()
{
string one = "a<b>aa</b>a";
string one_result = "a<b>aa</b>a";
Assert.AreEqual(one_result, SiteUtilities.FilterHtml(one, null), "Test one failed.");
string two = "aaa";
string two_result = two; // must remain unchanged
Assert.AreEqual(two_result, SiteUtilities.FilterHtml(two, new ValidTagCollection("a")), "Test two failed.");
string three = "aa<i>aa";
string three_result = "aa<i>aa";
Assert.AreEqual(three_result, SiteUtilities.FilterHtml(three, new ValidTagCollection("a")), "Test three failed.");
string four = "aa<i />aa";
string four_result = four; //must remain unchanged
Assert.AreEqual(four_result, SiteUtilities.FilterHtml(four, new ValidTagCollection("i")), "Test four failed.");
string five = "aa<b>aa<i />";
string five_result = "aa<b>aa<i />";
Assert.AreEqual(five_result, SiteUtilities.FilterHtml(five, new ValidTagCollection("i")), "Test five failed.");
string six = "aa<a>aa";
string six_result = "aa<a />aa";
Assert.AreEqual(six_result, SiteUtilities.FilterHtml(six, new ValidTagCollection("a")), "Test six failed.");
string seven = "aa<a>aa</a>aa";
string seven_result = seven; // must remain unchanged
Assert.AreEqual(seven_result, SiteUtilities.FilterHtml(seven, new ValidTagCollection("a")), "Test seven failed.");
string eight = "aa<a>aa<b>bb</b>aa</a>aa";
string eight_result = eight; // must remain unchanged
Assert.AreEqual(eight_result, SiteUtilities.FilterHtml(eight, new ValidTagCollection("a,b")), "Test eight failed.");
string nine = "aa<a>aa<b>b<img>b</b>aa</a>aa";
string nine_result = "aa<a>aa<b>b<img />b</b>aa</a>aa";
Assert.AreEqual(nine_result, SiteUtilities.FilterHtml(nine, new ValidTagCollection("a,b,img")), "Test nine failed.");
string ten = "aa</a>aa";
string ten_result = "aa</a>aa";
Assert.AreEqual(ten_result, SiteUtilities.FilterHtml(ten, new ValidTagCollection("a")), "Test ten failed.");
}
public void AddNewComment(string name, string email, string homepage, string comment, string entryId, bool openid)
{
SharedBasePage requestPage = Page as SharedBasePage;
// if we allow tags, use the allowed tags, otherwise use an empty array
ValidTagCollection allowedTags = (requestPage.SiteConfig.CommentsAllowHtml ? requestPage.SiteConfig.AllowedTags : new ValidTagCollection(null));
Entry entry = requestPage.DataService.GetEntry(entryId);
if ((entry != null) && SiteUtilities.AreCommentsAllowed(entry, requestPage.SiteConfig))
{
Comment c = new Comment();
c.Initialize();
c.OpenId = openid;
c.Author = HttpUtility.HtmlEncode(name);
c.AuthorEmail = HttpUtility.HtmlEncode(email);
c.AuthorHomepage = FixUrl(homepage);
c.AuthorIPAddress = Request.UserHostAddress;
c.AuthorUserAgent = Request.UserAgent;
c.Referer = Request.UrlReferrer != null?Request.UrlReferrer.ToString() : String.Empty;
// clean the code from html tags
c.TargetEntryId = entryId;
c.TargetTitle = entry.Title;
if (requestPage.SiteConfig.CommentsRequireApproval == true &&
(requestPage.SiteConfig.SmtpServer == null || requestPage.SiteConfig.SmtpServer.Length == 0))
{
requestPage.LoggingService.AddEvent(new EventDataItem(EventCodes.Error, "ERROR: Comment Moderation is turned on, but you haven't configured an SMTP Server for sending mail!", ""));
}
// if comments require moderation, they are not public.
// except when the commenter is a contributor
if (SiteSecurity.IsValidContributor())
{
c.IsPublic = true;
}
else
{
// bypass spam when the comment is authenticated by openid en openid doesn't require approval
if (requestPage.SiteConfig.EnableSpamBlockingService && (requestPage.SiteConfig.BypassSpamOpenIdComment && openid) == false)
{
// make sure to send the unfiltered comment for analysis by external service
c.Content = comment;
bool externalServiceSucceeded = false;
try
{
if (requestPage.SiteConfig.SpamBlockingService.IsSpam(c))
{
potentialSpamSubmitted = true;
if (!requestPage.SiteConfig.EnableSpamModeration)
{
// abort saving the comment
requestPage.LoggingService.AddEvent(new EventDataItem(EventCodes.CommentBlocked, String.Format("Blocking suspected spam from {0} {1} [{2}].", c.Author, c.AuthorEmail, c.AuthorIPAddress), SiteUtilities.GetPermaLinkUrl(entryId)));
clearCommentInput();
return;
}
c.SpamState = SpamState.Spam;
c.IsPublic = false;
}
else
{
c.SpamState = SpamState.NotSpam;
c.IsPublic = true;
}
externalServiceSucceeded = true;
}
catch (Exception ex)
{
requestPage.LoggingService.AddEvent(new EventDataItem(EventCodes.Error, String.Format("The external spam blocking service failed for comment {0}. Original exception: {1}", c.EntryId, ex), SiteUtilities.GetPermaLinkUrl(entryId)));
}
if (!externalServiceSucceeded)
{
// If the external service fails, we will hide the comment, but not delete it,
// even if moderation is disabled.
c.SpamState = SpamState.NotChecked;
if (doesFeedbackHaveSpamPotential(c))
{
potentialSpamSubmitted = true;
c.IsPublic = false;
}
else
{
c.IsPublic = true;
}
}
}
else
{
c.IsPublic = true;
}
// If comment moderation enabled, hide all comments regardless of the what the external spam service says
if (requestPage.SiteConfig.CommentsRequireApproval)
{
c.IsPublic = false;
}
}
// FilterHtml html encodes anything we don't like
string filteredText = SiteUtilities.FilterHtml(comment, allowedTags);
c.Content = filteredText;
if (requestPage.SiteConfig.SendCommentsByEmail &&
requestPage.SiteConfig.SmtpServer != null &&
requestPage.SiteConfig.SmtpServer.Length > 0)
{
SendMailInfo defaultMailInfo = ComposeMail(c);
requestPage.DataService.AddComment(c, defaultMailInfo);
requestPage.DataService.RunActions(ComposeMailForUsers(entry, c));
string commentShort = c.Content.Replace("\n", "");
if (commentShort.Length > 50)
{
commentShort = commentShort.Substring(0, 50) + "...";
}
requestPage.LoggingService.AddEvent(
new EventDataItem(
EventCodes.CommentAdded, commentShort, SiteUtilities.GetCommentViewUrl(entryId)));
}
else
{
requestPage.DataService.AddComment(c);
}
clearCommentInput();
// break the caching
requestPage.DataCache.Remove("BlogCoreData");
Session.Remove("pendingComment");
Session.Remove("pendingEntryId");
//Send the user to the comment they JUST posted.
if (!potentialSpamSubmitted)
{
Response.Redirect(SiteUtilities.GetCommentViewUrl(c.TargetEntryId) + "#" + c.EntryId);
}
}
}
public static string FilterHtml(string input, ValidTagCollection allowedTags)
{
return(SiteUtilities.FilterHtml(input, allowedTags));
}