Exception logging implemented; user-friendly exceptions display

Builder/IISMainHandler/build.txt

@@ -1 +1 @@
-1075
+1107

Common/UserContext.cs

@@ -60,6 +60,14 @@ namespace FLocal.Common {
 			);
 		}
 
+		public static XElement ToXml(this Exception exception) {
+			return new XElement("exception",
+				new XElement("type", exception.GetType().FullName),
+				new XElement("message", exception.Message),
+				new XElement("trace", exception.StackTrace)
+			);
+		}
+
 	}
 
 }

IISMainHandler/WebContext.cs

@@ -7,6 +7,7 @@ using FLocal.Core;
 using FLocal.Common.dataobjects;
 using FLocal.Common.actions;
 using System.Xml.Linq;
+using System.IO;
 
 namespace FLocal.IISHandler {
 	class WebContext : Common.UserContext {
@@ -150,5 +151,17 @@ namespace FLocal.IISHandler {
 			}
 		}
 
+		public void LogError(Exception e) {
+			using(StreamWriter writer = new StreamWriter(Common.Config.instance.dataDir + "Logs\\" + DateTime.Now.ToString("yyyy-MM-dd_HH-mm-ss") + "." + Guid.NewGuid() + ".txt")) {
+				writer.WriteLine("Exception: " + e.GetType().FullName);
+				writer.WriteLine(e.Message);
+				if(e is FLocalException) {
+					writer.WriteLine(((FLocalException)e).FullStackTrace);
+				} else {
+					writer.WriteLine(e.StackTrace);
+				}
+			}
+		}
+
 	}
 }

IISMainHandler/handlers/AbstractGetHandler.cs

@@ -14,21 +14,32 @@ namespace FLocal.IISHandler.handlers {
 
 		abstract protected IEnumerable<XElement> getSpecificData(WebContext context);
 
+		protected IEnumerable<XElement> getCommonData(WebContext context) {
+			return new XElement[] {
+				new XElement("title", Config.instance.AppInfo),
+				new XElement("current", DateTime.Now.ToXml()),
+				context.exportSession(),
+				context.userSettings.skin.exportToXml(),
+				new XElement("currentUrl", "/" + String.Join("/", context.requestParts) + "/"),
+			};
+		}
+
 		private XDocument getData(WebContext context) {
 			return new XDocument(
 				new XElement("root",
 					this.getSpecificData(context),
-					new XElement("title", Config.instance.AppInfo),
-					new XElement("current", DateTime.Now.ToXml()),
-					context.exportSession(),
-					context.userSettings.skin.exportToXml(),
-					new XElement("currentUrl", "/" + String.Join("/", context.requestParts) + "/")
+					this.getCommonData(context)
 				)
 			);
 		}
 
 		public void Handle(WebContext context) {
-			context.httpresponse.Write(context.Transform(this.templateName, this.getData(context)));
+			try {
+				context.httpresponse.Write(context.Transform(this.templateName, this.getData(context)));
+			} catch(Exception e) {
+				context.LogError(e);
+				context.httpresponse.Write(context.Transform("Exception.xslt", new XDocument(new XElement("root", this.getCommonData(context), e.ToXml()))));
+			}
 		}
 
 	}

IISMainHandler/handlers/request/AbstractPostHandler.cs

@@ -27,28 +27,39 @@ namespace FLocal.IISHandler.handlers.request {
 
 		abstract protected XElement[] Do(WebContext context);
 
+		protected IEnumerable<XElement> getCommonData(WebContext context) {
+			return new XElement[] {
+				new XElement("title", Config.instance.AppInfo),
+				new XElement("timestamp", DateTime.Now.Ticks.ToString()),
+				context.userSettings.skin.exportToXml(),
+				context.exportSession(),
+			};
+		}
+
 		private XDocument getData(WebContext context) {
 			return new XDocument(
 				new XElement("root",
 					this.Do(context),
-					new XElement("title", Config.instance.AppInfo),
-					new XElement("timestamp", DateTime.Now.Ticks.ToString()),
-					context.userSettings.skin.exportToXml(),
-					context.exportSession()
+					this.getCommonData(context)
 				)
 			);
 		}
 
 		public void Handle(WebContext context) {
 
-			Uri referer = context.httprequest.UrlReferrer;
-			if(referer == null || referer.Host != context.httprequest.Url.Host) {
-				throw new System.Web.HttpException(403, "Wrong referer");
-			}
+			try {
+				Uri referer = context.httprequest.UrlReferrer;
+				if(referer == null || referer.Host != context.httprequest.Url.Host) {
+					throw new System.Web.HttpException(403, "Wrong referer");
+				}
 
-			if(this.shouldBeGuest && context.session != null) throw new FLocalException("Should be guest");
-			if(this.shouldBeLoggedIn && context.session == null) throw new FLocalException("Should be anonymous");
-			context.httpresponse.Write(context.Transform(this.templateName, this.getData(context)));
+				if(this.shouldBeGuest && context.session != null) throw new FLocalException("Should be guest");
+				if(this.shouldBeLoggedIn && context.session == null) throw new FLocalException("Should be anonymous");
+				context.httpresponse.Write(context.Transform(this.templateName, this.getData(context)));
+			} catch(Exception e) {
+				context.LogError(e);
+				context.httpresponse.Write(context.Transform("Exception.xslt", new XDocument(new XElement("root", this.getCommonData(context), e.ToXml()))));
+			}
 		}
 
 	}

IISMainHandler/handlers/response/ConversationHandler.cs

@@ -46,7 +46,7 @@ namespace FLocal.IISHandler.handlers.response {
 								new ComparisonCondition(
 									PMMessage.TableSpec.instance.getIdSpec(),
 									ComparisonType.LESSTHAN,
-									int.Parse(context.requestParts[2].PHPSubstring(1)).ToString()
+									int.Parse(context.requestParts[4].PHPSubstring(1)).ToString()
 								)
 							)
 						)

templates/Full/Exception.xslt

@@ -0,0 +1,37 @@
+<?xml version="1.0" encoding="Windows-1251"?>
+<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns="http://www.w3.org/1999/xhtml">
+	<xsl:import href="elems\Main.xslt"/>
+	<xsl:template name="specificTitle">Îøèáêà</xsl:template>
+	<xsl:template name="specific">
+		<table width="95%" align="center" cellpadding="1" cellspacing="1" class="tablesurround">
+			<tr>
+				<td>
+					<table cellpadding="3" cellspacing="1" width="100%" class="tableborders">
+						<tr>
+							<td class="tdheader">
+								<xsl:text>Ïðîèçîøëà îøèáêà</xsl:text>
+							</td> 
+						</tr>
+						<tr class="lighttable"> 
+							<td>
+								<xsl:text>Òèï îøèáêè: </xsl:text>
+								<xsl:value-of select="exception/type"/>
+								<br/>
+								<xsl:text>Ñîîáùåíèå îá îøèáêå: </xsl:text>
+								<xsl:value-of select="exception/message"/>
+								<br/>
+								<br/>
+								<font size="-3">
+									<pre>
+										<xsl:value-of select="exception/trace"/>
+									</pre>
+								</font>
+							</td> 
+						</tr> 
+					</table> 
+				</td> 
+			</tr> 
+		</table> 
+	</xsl:template>
+
+</xsl:stylesheet>

templates/Lite/Exception.xslt

@@ -0,0 +1,37 @@
+<?xml version="1.0" encoding="Windows-1251"?>
+<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xmlns="http://www.w3.org/1999/xhtml">
+	<xsl:import href="elems\Main.xslt"/>
+	<xsl:template name="specificTitle">Îøèáêà</xsl:template>
+	<xsl:template name="specific">
+		<table width="95%" align="center" cellpadding="1" cellspacing="1" class="tablesurround">
+			<tr>
+				<td>
+					<table cellpadding="3" cellspacing="1" width="100%" class="tableborders">
+						<tr>
+							<td class="tdheader">
+								<xsl:text>Ïðîèçîøëà îøèáêà</xsl:text>
+							</td> 
+						</tr>
+						<tr class="lighttable"> 
+							<td>
+								<xsl:text>Òèï îøèáêè: </xsl:text>
+								<xsl:value-of select="exception/type"/>
+								<br/>
+								<xsl:text>Ñîîáùåíèå îá îøèáêå: </xsl:text>
+								<xsl:value-of select="exception/message"/>
+								<br/>
+								<br/>
+								<font size="-3">
+									<pre>
+										<xsl:value-of select="exception/trace"/>
+									</pre>
+								</font>
+							</td> 
+						</tr> 
+					</table> 
+				</td> 
+			</tr> 
+		</table> 
+	</xsl:template>
+
+</xsl:stylesheet>