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1 <%
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2 package nabble.view.lib;
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3
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4 import fschmidt.util.java.HtmlUtils;
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5 import fschmidt.util.servlet.ServletUtils;
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6 import nabble.model.Init;
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7 import nabble.model.Site;
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8 import nabble.model.UpdatingException;
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9 import nabble.model.User;
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10 import org.eclipse.jetty.http.HttpGenerator;
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11 import org.eclipse.jetty.server.Request;
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12 import org.slf4j.Logger;
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13 import org.slf4j.LoggerFactory;
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14
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15 import javax.servlet.ServletException;
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16 import javax.servlet.http.HttpServletRequest;
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17 import javax.servlet.http.HttpServletResponse;
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18 import java.io.IOException;
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19 import java.io.PrintWriter;
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20 import java.io.StringWriter;
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21 import java.io.Writer;
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22
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23
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24 public final class NabbleErrorHandler extends org.eclipse.jetty.server.handler.ErrorHandler {
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25
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26 private static final Logger logger = LoggerFactory.getLogger(NabbleErrorHandler.class);
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27 private HttpServletResponse response;
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28
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29 public void handle(String string, Request request, HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse) throws IOException {
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30 this.response = httpServletResponse;
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31 super.handle(string, request, httpServletRequest, httpServletResponse);
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32 }
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33
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34 protected void writeErrorPage(HttpServletRequest request, Writer writer, int code, String message, boolean showStacks)
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35 throws IOException
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36 {
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37 if (code == HttpServletResponse.SC_SERVICE_UNAVAILABLE) {
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38 serviceUnavailablePage(writer);
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39 return;
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40 }
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41 if (message == null)
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42 message = HttpGenerator.getReasonBuffer(code).toString();
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43
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44 Throwable throwable = (Throwable)request.getAttribute(NabbleErrorFilter.WORK_AROUND_ERROR_EXCEPTION);
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45 if (UpdatingException.isIn(throwable)) {
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46 logger.error("Updating database: "+ServletUtils.getCurrentURL(request));
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47 databaseUpdatePage(writer);
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48 return;
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49 }
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50 try {
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51 writeMyErrorPage(request,writer,code,message,showStacks, throwable);
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52 } catch (ServletException e) {
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53 logger.error(ServletUtils.getCurrentURL(request), e);
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54 throw new RuntimeException(e);
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55 } catch (RuntimeException e) {
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56 logger.error(ServletUtils.getCurrentURL(request), e);
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57 throw e;
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58 }
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59 }
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60
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61 private void writeMyErrorPage(HttpServletRequest request, Writer writer, int code, String message, boolean showStacks, Throwable throwable)
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62 throws IOException, ServletException
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63 {
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64 PrintWriter out = new PrintWriter(writer);
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65 boolean hasTweaks = false;
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66 boolean isAdmin = false;
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67 String homeLink;
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68 Site site = null;
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69 try {
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70 site = Jtp.getSite(request);
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71 } catch(RuntimeException e) {}
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72 if( site == null ) {
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73 homeLink = "<a href='" + Jtp.homePage() + "'>Nabble</a>";
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74 } else {
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75 homeLink = Jtp.link(site.getRootNode());
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76 hasTweaks = site.getCustomTweaks().size() > 0;
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77 User user = Jtp.getUser(request, response);
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78 isAdmin = user != null && (site.getRootNode().getOwner().equals(user) || Permissions.isInGroup(user, "Administrators"));
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79 }
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80 %>
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81 <html>
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82 <head>
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83 <% writeErrorPageHead(request,writer,code,message); %>
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84 <META NAME="robots" CONTENT="noindex,nofollow">
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85 <link rel="stylesheet" href="<%=Shared.getCssPath()%>" type="text/css" />
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86 <style type="text/css">
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87 p { margin: .3em 0 0; }
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88 .error-details {
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89 border: 1px solid gray;
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90 padding: .5em;
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91 width:90%;
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92 margin-left:2.5%;
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93 position: relative;
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94 overflow-x:scroll;
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95 }
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96 </style>
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97 </head>
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98 <body>
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99 <%
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100 String uri = request.getRequestURI();
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101 if (uri!=null) {
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102 uri = HtmlUtils.htmlEncode(uri);
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103 }
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104 %>
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105 <div class="nabble" id="nabble">
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106 <div class="top-bar">
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107 <div class="breadcrumbs" style="float:left;">
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108 <%=homeLink%>
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109 </div>
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110 </div>
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111 <%
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112 if (throwable != null) {
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113 if( throwable instanceof ServletException ) {
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114 if( MinorServletException.isIn(throwable) ) {
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115 logger.info(ServletUtils.getCurrentURL(request), throwable);
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116 } else {
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117 logger.warn(ServletUtils.getCurrentURL(request), throwable);
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118 }
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119 } else {
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120 logger.error(ServletUtils.getCurrentURL(request), throwable);
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121 }
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122 %>
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123 <h1>Oops... An error has occurred</h1>
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124
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125 Please contact <a href="<%=Jtp.supportUrl()%>" target="_new">Nabble Support</a> and explain what you did to cause this error.
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126 Your feedback is very important to us.
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127
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128 <% if (hasTweaks) { %>
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129 <% if (isAdmin) { %>
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130 <div class="info-message rounded" style="margin-top:1em;padding:.5em .3em">
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131 <h3 style="margin-top:0;padding-top:0">Modified NAML Code</h3>
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132 <%=site.getRootNode().getSubjectHtml()%> has modified NAML code and this could be the cause of the error below.
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133 Please take a careful look at your changes and try to make sure your code is not broken.<br/>
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134 </div>
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135 <% } %>
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136 <div style="margin:1.2em 0;font-weight:bold">
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137 <img src="/images/tool.png" width="16" height="17" style="vertical-align:-25%"/>
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138 <a href="/template/NamlEditor.jtp">Go to NAML Editor</a>
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139 </div>
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140 <% } %>
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141
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142 <h2 style="margin-top:1em">More Details</h2>
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143 <div class="error-details light-bg-color">
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144 <h3>Error <%=code%></h3>
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145 <pre><%=HtmlUtils.htmlEncode(message)%></pre>
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146 <% if (throwable.getCause() != null) {
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147 String msg = throwable.getCause().getMessage();
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148 if( msg != null ) {
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149 int posBreak = msg.indexOf("\n\t");
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150 msg = posBreak > 0? msg.substring(0, posBreak) : msg;
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151 msg = HtmlUtils.htmlEncode(msg);
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152 msg = msg.replaceAll("\n", "<br/>").replaceAll("\t"," ");
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153 %>
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154 <p><b>Message</b>: <%=msg%></p>
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155 <%
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156 }
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157 }%>
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158 <p><b>RequestURI</b>: <%=uri%></p>
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159 <p><b>Server</b>: <%=Jtp.getDefaultHost()%></p>
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160 <%
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161
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162 if (showStacks) {
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163 StringWriter sw = new StringWriter();
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164 PrintWriter pw = new PrintWriter(sw);
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165 throwable.printStackTrace(pw);
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166 pw.flush();
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167 %><h3 style="margin-top:1.2em">Caused by:</h3><pre><%=HtmlUtils.htmlEncode(sw.toString())%></pre><%
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168 }
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169 %>
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170 </div>
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171 <%
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172 } else {
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173 %>
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174 <h2 style="padding:0;margin:1em 0"><%=message%></h2>
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175
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176 Please contact <a href="<%=Jtp.supportUrl()%>" target="_new">Nabble Support</a> if you need help.
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177 <%
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178 }
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179 {
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180 StringBuffer url = request.getRequestURL();
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181 String query = request.getQueryString();
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182 if( query != null )
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183 url.append( '?' ).append( query );
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184 %>
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185 <p>URL = <a href="<%=url%>"><%=url%></a></p>
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186 <%
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187 }
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188 %>
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189 <table class="footer-table shaded-bg-color">
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190 <tr>
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191 <td class="footer-left">
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192 Powered by <a href="<%=Jtp.homePage()%>" target="_top" title="Free forum and other embeddable web apps">Nabble</a>
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193 </td>
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194 <td class="footer-right"></td>
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195 </tr>
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196 </table>
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197 </div>
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198 </body>
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199 </html>
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200 <%
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201 }
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202
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203 private void serviceUnavailablePage(Writer writer) {
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204 PrintWriter out = new PrintWriter(writer);
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205 %>
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206 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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207 <html>
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208 <head>
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209 <title>Service Unavailable</title>
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210 <META NAME="robots" CONTENT="noindex,nofollow">
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211 </head>
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212 <body style="text-align:center;font-family: Verdana,sans-serif;font-size:.84em;padding-top:2em">
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213 <img src="https://www.nabble.com/assets/images/logo_nabble_home.png"/>
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214 <h1 style="margin-top:1.5em">This Nabble server is over capacity.</h1>
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215 <div style="margin:0 15% 2em;text-align:center;background:#eee;padding:1em 0">
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216 Too many requests... Please wait a moment and try again.
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217 </div>
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218
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219 Powered by <a href="https://www.nabble.com/">Nabble</a>
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220 </div>
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221 </body>
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222 </html>
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223 <%
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224 }
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225
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226 private void databaseUpdatePage(Writer writer) {
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227 PrintWriter out = new PrintWriter(writer);
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228 %>
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229 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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230 <html>
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231 <head>
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232 <title>Updating Database</title>
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233 <META NAME="robots" CONTENT="noindex,nofollow">
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234 </head>
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235 <body style="text-align:center;font-family: Verdana,sans-serif;font-size:.84em;padding-top:2em">
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236 <h1 style="margin-top:3em">Updating Database</h1>
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237 <div style="margin:0 25% 2em;text-align:center;background:#eee;padding:1em 0">
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238 This database is being updated. Please try again in a few seconds.
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239 </div>
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240 <h2>Reloading in <span id="sec">60</span> seconds</h2>
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241 <script type="text/javascript">
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242 var seconds = 60;
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243 function countDown() {
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244 if (seconds == 0) {
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245 window.location.reload();
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246 return;
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247 }
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248 document.getElementById('sec').innerHTML = seconds;
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249 seconds--;
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250 setTimeout(countDown, 1000);
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251 };
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252 countDown();
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253 </script>
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254
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255 Powered by <a href="https://www.nabble.com/">Nabble</a>
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256 </div>
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257 </body>
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258 </html>
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259 <%
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260 }
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261 }
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262 %>
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