pdns/ws.cc

   1 /*
   2     Copyright (C) 2002 - 2012  PowerDNS.COM BV
   3
   4     This program is free software; you can redistribute it and/or modify
   5     it under the terms of the GNU General Public License version 2
   6     as published by the Free Software Foundation
   7
   8     This program is distributed in the hope that it will be useful,
   9     but WITHOUT ANY WARRANTY; without even the implied warranty of
  10     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11     GNU General Public License for more details.
  12
  13     You should have received a copy of the GNU General Public License
  14     along with this program; if not, write to the Free Software
  15     Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  16 */
  17 #include "utility.hh"
  18 #include "dynlistener.hh"
  19 #include "ws.hh"
  20 #include "json.hh"
  21 #include "webserver.hh"
  22 #include "logger.hh"
  23 #include "packetcache.hh"
  24 #include "statbag.hh"
  25 #include "misc.hh"
  26 #include "arguments.hh"
  27 #include "dns.hh"
  28 #include "ueberbackend.hh"
  29 #include <boost/format.hpp>
  30 #include <boost/foreach.hpp>
  31 #include "namespaces.hh"
  32 #include "rapidjson/document.h"
  33 #include "rapidjson/stringbuffer.h"
  34 #include "rapidjson/writer.h"
  35 #include "version.hh"
  36
  37 using namespace rapidjson;
  38
  39 extern StatBag S;
  40
  41 StatWebServer::StatWebServer()
  42 {
  43   d_start=time(0);
  44   d_min10=d_min5=d_min1=0;
  45   d_ws = 0;
  46   d_tid = 0;
  47   if(arg().mustDo("webserver"))
  48     d_ws = new WebServer(arg()["webserver-address"], arg().asNum("webserver-port"),arg()["webserver-password"]);
  49 }
  50
  51 void StatWebServer::go()
  52 {
  53   if(arg().mustDo("webserver"))
  54   {
  55     S.doRings();
  56     pthread_create(&d_tid, 0, threadHelper, this);
  57     pthread_create(&d_tid, 0, statThreadHelper, this);
  58   }
  59 }
  60
  61 void StatWebServer::statThread()
  62 {
  63   try {
  64     for(;;) {
  65       d_queries.submit(S.read("udp-queries"));
  66       d_cachehits.submit(S.read("packetcache-hit"));
  67       d_cachemisses.submit(S.read("packetcache-miss"));
  68       d_qcachehits.submit(S.read("query-cache-hit"));
  69       d_qcachemisses.submit(S.read("query-cache-miss"));
  70       Utility::sleep(1);
  71     }
  72   }
  73   catch(...) {
  74     L<<Logger::Error<<"Webserver statThread caught an exception, dying"<<endl;
  75     exit(1);
  76   }
  77 }
  78
  79 void *StatWebServer::statThreadHelper(void *p)
  80 {
  81   StatWebServer *sws=static_cast<StatWebServer *>(p);
  82   sws->statThread();
  83   return 0; // never reached
  84 }
  85
  86
  87 void *StatWebServer::threadHelper(void *p)
  88 {
  89   StatWebServer *sws=static_cast<StatWebServer *>(p);
  90   sws->launch();
  91   return 0; // never reached
  92 }
  93
  94 void printtable(ostringstream &ret, const string &ringname, const string &title, int limit=10)
  95 {
  96   vector<pair <string,unsigned int> >ring=S.getRing(ringname);
  97   if (ring.size() == 0) {
  98     return;
  99   }
 100
 101   int tot=0;
 102   int entries=0;
 103
 104   for(vector<pair<string, unsigned int> >::const_iterator i=ring.begin(); i!=ring.end();++i) {
 105     tot+=i->second;
 106     entries++;
 107   }
 108
 109   ret<<"<div class=\"panel\">";
 110   ret<<"<span class=resetring><i></i><a href=\"?resetring="<<ringname<<"\">Reset</a></span>"<<endl;
 111   ret<<"<h2>"<<title<<"</h2>"<<endl;
 112   ret<<"<div class=ringmeta>";
 113   ret<<"<a class=topXofY href=\"?ring="<<ringname<<"\">Showing: Top "<<limit<<" of "<<entries<<"</a>"<<endl;
 114   ret<<"<span class=resizering>Resize: ";
 115   unsigned int sizes[]={10,100,500,1000,10000,500000,0};
 116   for(int i=0;sizes[i];++i) {
 117     if(S.getRingSize(ringname)!=sizes[i])
 118       ret<<"<a href=\"?resizering="<<ringname<<"&amp;size="<<sizes[i]<<"\">"<<sizes[i]<<"</a> ";
 119     else
 120       ret<<"("<<sizes[i]<<") ";
 121   }
 122   ret<<"</span></div>";
 123
 124   ret<<"<table class=\"data\">";
 125   int printed=0;
 126   for(vector<pair<string,unsigned int> >::const_iterator i=ring.begin();limit && i!=ring.end();++i,--limit) {
 127     ret<<"<tr><td>"<<i->first<<"</td><td>"<<i->second<<"</td><td align=right>"<< StatWebServer::makePercentage(i->second*100.0/tot)<<"</td>"<<endl;
 128     printed+=i->second;
 129   }
 130   ret<<"<tr><td colspan=3></td></tr>"<<endl;
 131   if(printed!=tot)
 132     ret<<"<tr><td><b>Rest:</b></td><td><b>"<<tot-printed<<"</b></td><td align=right><b>"<< StatWebServer::makePercentage((tot-printed)*100.0/tot)<<"</b></td>"<<endl;
 133
 134   ret<<"<tr><td><b>Total:</b></td><td><b>"<<tot<<"</b></td><td align=right><b>100%</b></td>";
 135   ret<<"</table></div>"<<endl;
 136 }
 137
 138 void StatWebServer::printvars(ostringstream &ret)
 139 {
 140   ret<<"<div class=panel><h2>Variables</h2><table class=\"data\">"<<endl;
 141
 142   vector<string>entries=S.getEntries();
 143   for(vector<string>::const_iterator i=entries.begin();i!=entries.end();++i) {
 144     ret<<"<tr><td>"<<*i<<"</td><td>"<<S.read(*i)<<"</td><td>"<<S.getDescrip(*i)<<"</td>"<<endl;
 145   }
 146
 147   ret<<"</table></div>"<<endl;
 148 }
 149
 150 void StatWebServer::printargs(ostringstream &ret)
 151 {
 152   ret<<"<table border=1><tr><td colspan=3 bgcolor=\"#0000ff\"><font color=\"#ffffff\">Arguments</font></td>"<<endl;
 153
 154   vector<string>entries=arg().list();
 155   for(vector<string>::const_iterator i=entries.begin();i!=entries.end();++i) {
 156     ret<<"<tr><td>"<<*i<<"</td><td>"<<arg()[*i]<<"</td><td>"<<arg().getHelp(*i)<<"</td>"<<endl;
 157   }
 158 }
 159
 160 string StatWebServer::makePercentage(const double& val)
 161 {
 162   return (boost::format("%.01f%%") % val).str();
 163 }
 164
 165 string StatWebServer::indexfunction(const string& method, const string& post, const map<string,string> &varmap, void *ptr, bool *custom)
 166 {
 167   StatWebServer *sws=static_cast<StatWebServer *>(ptr);
 168   map<string,string>rvarmap=varmap;
 169   if(!rvarmap["resetring"].empty()){
 170     *custom=true;
 171     S.resetRing(rvarmap["resetring"]);
 172     return "HTTP/1.1 301 Moved Permanently\nLocation: /\nConnection: close\n\n";
 173   }
 174   if(!rvarmap["resizering"].empty()){
 175     *custom=true;
 176     S.resizeRing(rvarmap["resizering"], atoi(rvarmap["size"].c_str()));
 177     return "HTTP/1.1 301 Moved Permanently\nLocation: /\nConnection: close\n\n";
 178   }
 179
 180   ostringstream ret;
 181
 182   ret<<"<!DOCTYPE html>"<<endl;
 183   ret<<"<html><head>"<<endl;
 184   ret<<"<title>PowerDNS Authoritative Server Monitor</title>"<<endl;
 185   ret<<"<link rel=\"stylesheet\" href=\"style.css\"/>"<<endl;
 186   ret<<"</head><body>"<<endl;
 187
 188   ret<<"<div class=\"row\">"<<endl;
 189   ret<<"<div class=\"headl columns\">";
 190   ret<<"<a href=\"/\" id=\"appname\">PowerDNS "VERSION;
 191   if(!arg()["config-name"].empty()) {
 192     ret<<" ["<<arg()["config-name"]<<"]";
 193   }
 194   ret<<"</a></div>"<<endl;
 195   ret<<"<div class=\"headr columns\"></div></div>";
 196   ret<<"<div class=\"row\"><div class=\"all columns\">";
 197
 198   time_t passed=time(0)-s_starttime;
 199
 200   ret<<"<p>Uptime: "<<
 201     humanDuration(passed)<<
 202     "<br>"<<endl;
 203
 204   ret<<"Queries/second, 1, 5, 10 minute averages:  "<<std::setprecision(3)<<
 205     sws->d_queries.get1()<<", "<<
 206     sws->d_queries.get5()<<", "<<
 207     sws->d_queries.get10()<<". Max queries/second: "<<sws->d_queries.getMax()<<
 208     "<br>"<<endl;
 209
 210   if(sws->d_cachemisses.get10()+sws->d_cachehits.get10()>0)
 211     ret<<"Cache hitrate, 1, 5, 10 minute averages: "<<
 212       makePercentage((sws->d_cachehits.get1()*100.0)/((sws->d_cachehits.get1())+(sws->d_cachemisses.get1())))<<", "<<
 213       makePercentage((sws->d_cachehits.get5()*100.0)/((sws->d_cachehits.get5())+(sws->d_cachemisses.get5())))<<", "<<
 214       makePercentage((sws->d_cachehits.get10()*100.0)/((sws->d_cachehits.get10())+(sws->d_cachemisses.get10())))<<
 215       "<br>"<<endl;
 216
 217   if(sws->d_qcachemisses.get10()+sws->d_qcachehits.get10()>0)
 218     ret<<"Backend query cache hitrate, 1, 5, 10 minute averages: "<<std::setprecision(2)<<
 219       makePercentage((sws->d_qcachehits.get1()*100.0)/((sws->d_qcachehits.get1())+(sws->d_qcachemisses.get1())))<<", "<<
 220       makePercentage((sws->d_qcachehits.get5()*100.0)/((sws->d_qcachehits.get5())+(sws->d_qcachemisses.get5())))<<", "<<
 221       makePercentage((sws->d_qcachehits.get10()*100.0)/((sws->d_qcachehits.get10())+(sws->d_qcachemisses.get10())))<<
 222       "<br>"<<endl;
 223
 224   ret<<"Backend query load, 1, 5, 10 minute averages: "<<std::setprecision(3)<<
 225     sws->d_qcachemisses.get1()<<", "<<
 226     sws->d_qcachemisses.get5()<<", "<<
 227     sws->d_qcachemisses.get10()<<". Max queries/second: "<<sws->d_qcachemisses.getMax()<<
 228     "<br>"<<endl;
 229
 230   ret<<"Total queries: "<<S.read("udp-queries")<<". Question/answer latency: "<<S.read("latency")/1000.0<<"ms</p><br>"<<endl;
 231   if(rvarmap["ring"].empty()) {
 232     vector<string>entries=S.listRings();
 233     for(vector<string>::const_iterator i=entries.begin();i!=entries.end();++i)
 234       printtable(ret,*i,S.getRingTitle(*i));
 235
 236     sws->printvars(ret);
 237     if(arg().mustDo("webserver-print-arguments"))
 238       sws->printargs(ret);
 239   }
 240   else
 241     printtable(ret,rvarmap["ring"],S.getRingTitle(rvarmap["ring"]),100);
 242
 243   ret<<"</div></div>"<<endl;
 244   ret<<"<footer class=\"row\">"<<fullVersionString()<<"<br>&copy; 2013 <a href=\"http://www.powerdns.com/\">PowerDNS.COM BV</a>.</footer>"<<endl;
 245   ret<<"</body></html>"<<endl;
 246
 247   return ret.str();
 248 }
 249
 250
 251 string StatWebServer::jsonstat(const string& method, const string& post, const map<string,string> &varmap, void *ptr, bool *custom)
 252 {
 253   *custom=1; // indicates we build the response
 254   string ret="HTTP/1.1 200 OK\r\n"
 255   "Server: PowerDNS/"VERSION"\r\n"
 256   "Connection: close\r\n"
 257   "Access-Control-Allow-Origin: *\r\n"
 258   "Content-Type: application/json\r\n"
 259   "\r\n" ;
 260
 261   typedef map<string,string> varmap_t;
 262   varmap_t ourvarmap=varmap;
 263   string callback;
 264   string command;
 265
 266   if(ourvarmap.count("callback")) {
 267     callback=ourvarmap["callback"];
 268     ourvarmap.erase("callback");
 269   }
 270
 271   if(ourvarmap.count("command")) {
 272     command=ourvarmap["command"];
 273     ourvarmap.erase("command");
 274   }
 275
 276   ourvarmap.erase("_");
 277   if(!callback.empty())
 278       ret += callback+"(";
 279
 280   if(command=="get") {
 281     if(ourvarmap.empty()) {
 282       vector<string> entries = S.getEntries();
 283       BOOST_FOREACH(string& ent, entries) {
 284         ourvarmap[ent];
 285       }
 286       ourvarmap["version"];
 287       ourvarmap["uptime"];
 288     }
 289
 290     string variable, value;
 291
 292     Document doc;
 293     doc.SetObject();
 294     for(varmap_t::const_iterator iter = ourvarmap.begin(); iter != ourvarmap.end() ; ++iter) {
 295       variable = iter->first;
 296       if(variable == "version") {
 297         value =VERSION;
 298       }
 299       else if(variable == "uptime") {
 300         value = lexical_cast<string>(time(0) - s_starttime);
 301       }
 302       else
 303         value = lexical_cast<string>(S.read(variable));
 304       Value jval;
 305       jval.SetString(value.c_str(), value.length(), doc.GetAllocator());
 306       doc.AddMember(variable.c_str(), jval, doc.GetAllocator());
 307     }
 308     ret+=makeStringFromDocument(doc);
 309   }
 310
 311   if(command=="config") {
 312     vector<string> items = ::arg().list();
 313     Document doc;
 314     doc.SetArray();
 315     BOOST_FOREACH(const string& var, items) {
 316       Value kv, key, value;
 317       kv.SetArray();
 318       key.SetString(var.c_str(), var.length());
 319       kv.PushBack(key, doc.GetAllocator());
 320
 321       if(var.find("password") != string::npos)
 322         value="*****";
 323       else
 324         value.SetString(::arg()[var].c_str(), ::arg()[var].length(), doc.GetAllocator());
 325
 326       kv.PushBack(value, doc.GetAllocator());
 327       doc.PushBack(kv, doc.GetAllocator());
 328     }
 329     ret += makeStringFromDocument(doc);
 330   }
 331
 332   if(command == "flush-cache") {
 333     extern PacketCache PC;
 334     int number;
 335     if(ourvarmap["domain"].empty())
 336       number = PC.purge();
 337     else
 338       number = PC.purge(ourvarmap["domain"]);
 339
 340     map<string, string> object;
 341     object["number"]=lexical_cast<string>(number);
 342     //cerr<<"Flushed cache for '"<<ourvarmap["domain"]<<"', cleaned "<<number<<" records"<<endl;
 343     ret += returnJSONObject(object);
 344   }
 345   if(command=="get-zone") {
 346     UeberBackend B;
 347     SOAData sd;
 348     sd.db= (DNSBackend*)-1;
 349     if(!B.getSOA(ourvarmap["zone"], sd) || !sd.db) {
 350       cerr<<"Could not find domain '"<<ourvarmap["zone"]<<"'\n";
 351       return "";
 352     }
 353     sd.db->list(ourvarmap["zone"], sd.domain_id);
 354     DNSResourceRecord rr;
 355
 356     ret+="[";
 357     map<string, string> object;
 358     bool first=1;
 359     while(sd.db->get(rr)) {
 360       if(!first) ret += ", ";
 361       first=false;
 362       object.clear();
 363       object["name"] = rr.qname;
 364       object["type"] = rr.qtype.getName();
 365       object["ttl"] = lexical_cast<string>(rr.ttl);
 366       object["priority"] = lexical_cast<string>(rr.priority);
 367       object["content"] = rr.content;
 368       ret+=returnJSONObject(object);
 369     }
 370
 371     ret += "]";
 372   }
 373   if(command == "pdns-control") {
 374     if(method!="POST") {
 375       map<string, string> m;
 376       m["error"]="pdns-control requires a POST";
 377       return ret + returnJSONObject(m);
 378     }
 379     // cout<<"post: "<<post<<endl;
 380     rapidjson::Document document;
 381     if(document.Parse<0>(post.c_str()).HasParseError()) {
 382       return ret+"{\"error\": \"Unable to parse JSON\"";
 383     }
 384     // cout<<"Parameters: '"<<document["parameters"].GetString()<<"'\n";
 385     vector<string> parameters;
 386     stringtok(parameters, document["parameters"].GetString(), " \t");
 387
 388     DynListener::g_funk_t* ptr=0;
 389     if(!parameters.empty())
 390       ptr = DynListener::getFunc(toUpper(parameters[0]));
 391     map<string, string> m;
 392
 393     if(ptr) {
 394       m["result"] = (*ptr)(parameters, 0);
 395     } else {
 396       m["error"]="No such function "+toUpper(parameters[0]);
 397     }
 398     ret+= returnJSONObject(m);
 399
 400   }
 401   if(command == "zone-rest") { // http://jsonstat?command=zone-rest&rest=/powerdns.nl/www.powerdns.nl/a
 402     vector<string> parts;
 403     stringtok(parts, ourvarmap["rest"], "/");
 404     if(parts.size() != 3)
 405       return ret+"{\"error\": \"Could not parse rest parameter\"}";
 406     UeberBackend B;
 407     SOAData sd;
 408     sd.db = (DNSBackend*)-1;
 409     if(!B.getSOA(parts[0], sd) || !sd.db) {
 410       map<string, string> err;
 411       err["error"]= "Could not find domain '"+parts[0]+"'";
 412       return ret+returnJSONObject(err);
 413     }
 414
 415     QType qtype;
 416     qtype=parts[2];
 417     string qname=parts[1];
 418     extern PacketCache PC;
 419     PC.purge(qname);
 420     // cerr<<"domain id: "<<sd.domain_id<<", lookup name: '"<<parts[1]<<"', for type: '"<<qtype.getName()<<"'"<<endl;
 421
 422     if(method == "GET" ) {
 423       B.lookup(qtype, parts[1], 0, sd.domain_id);
 424
 425       DNSResourceRecord rr;
 426       ret+="{ \"records\": [";
 427       map<string, string> object;
 428       bool first=1;
 429
 430       while(B.get(rr)) {
 431         if(!first) ret += ", ";
 432           first=false;
 433         object.clear();
 434         object["name"] = rr.qname;
 435         object["type"] = rr.qtype.getName();
 436         object["ttl"] = lexical_cast<string>(rr.ttl);
 437         object["priority"] = lexical_cast<string>(rr.priority);
 438         object["content"] = rr.content;
 439         ret+=returnJSONObject(object);
 440       }
 441       ret+="]}";
 442     }
 443     else if(method=="DELETE") {
 444       sd.db->replaceRRSet(sd.domain_id, qname, qtype, vector<DNSResourceRecord>());
 445
 446     }
 447     else if(method=="POST") {
 448       rapidjson::Document document;
 449       if(document.Parse<0>(post.c_str()).HasParseError()) {
 450         return ret+"{\"error\": \"Unable to parse JSON\"";
 451       }
 452
 453       DNSResourceRecord rr;
 454       vector<DNSResourceRecord> rrset;
 455       const rapidjson::Value &records= document["records"];
 456       for(rapidjson::SizeType i = 0; i < records.Size(); ++i) {
 457         const rapidjson::Value& record = records[i];
 458         rr.qname=record["name"].GetString();
 459         rr.content=record["content"].GetString();
 460         rr.qtype=record["type"].GetString();
 461         rr.domain_id = sd.domain_id;
 462         rr.auth=0;
 463         rr.ttl=atoi(record["ttl"].GetString());
 464         rr.priority=atoi(record["priority"].GetString());
 465
 466         rrset.push_back(rr);
 467
 468         if(rr.qtype.getCode() == QType::MX || rr.qtype.getCode() == QType::SRV)
 469           rr.content = lexical_cast<string>(rr.priority)+" "+rr.content;
 470
 471         try {
 472           shared_ptr<DNSRecordContent> drc(DNSRecordContent::mastermake(rr.qtype.getCode(), 1, rr.content));
 473           string tmp=drc->serialize(rr.qname);
 474         }
 475         catch(std::exception& e)
 476         {
 477           map<string, string> err;
 478           err["error"]= "Following record had a problem: "+rr.qname+" IN " +rr.qtype.getName()+ " " + rr.content+": "+e.what();
 479           return ret+returnJSONObject(err);
 480         }
 481       }
 482       // but now what
 483       sd.db->startTransaction(qname);
 484       sd.db->replaceRRSet(sd.domain_id, qname, qtype, rrset);
 485       sd.db->commitTransaction();
 486       return ret+post;
 487     }
 488   }
 489   if(command=="log-grep") {
 490     ret += makeLogGrepJSON(ourvarmap, ::arg()["experimental-logfile"], " pdns[");
 491   }
 492
 493   if(command=="domains") {
 494     UeberBackend B;
 495     vector<DomainInfo> domains;
 496     B.getAllDomains(&domains);
 497
 498     Document doc;
 499     doc.SetObject();
 500
 501     Value jdomains;
 502     jdomains.SetArray();
 503
 504     BOOST_FOREACH(const DomainInfo& di, domains) {
 505       Value jdi;
 506       jdi.SetObject();
 507       jdi.AddMember("name", di.zone.c_str(), doc.GetAllocator());
 508       jdi.AddMember("kind", di.getKindString(), doc.GetAllocator());
 509       string masters = boost::join(di.masters, " ");
 510       Value jmasters;
 511       jmasters.SetString(masters.c_str(), masters.size(), doc.GetAllocator());
 512       jdi.AddMember("masters", jmasters, doc.GetAllocator()); // ^^^ this makes an actual copy, otherwise the zerocopy behaviour bites us!
 513       jdi.AddMember("serial", di.serial, doc.GetAllocator());
 514       jdi.AddMember("notified_serial", di.notified_serial, doc.GetAllocator());
 515       jdi.AddMember("last_check", (unsigned int) di.last_check, doc.GetAllocator());
 516       jdomains.PushBack(jdi, doc.GetAllocator());
 517     }
 518     doc.AddMember("domains", jdomains, doc.GetAllocator());
 519     ret.append(makeStringFromDocument(doc));
 520   }
 521
 522   if(!callback.empty()) {
 523     ret += ");";
 524   }
 525   return ret;
 526 }
 527
 528 string StatWebServer::cssfunction(const string& method, const string& post, const map<string,string> &varmap, void *ptr, bool *custom)
 529 {
 530   *custom=1; // indicates we build the response
 531   ostringstream ret;
 532   ret<<"HTTP/1.1 200 OK\r\n"
 533   "Server: PowerDNS/"VERSION"\r\n"
 534   "Connection: close\r\n"
 535   "Cache-Control: max-age=86400\r\n"
 536   "Content-Type: text/css\r\n"
 537   "\r\n";
 538
 539   ret<<"* { box-sizing: border-box; margin: 0; padding: 0; }"<<endl;
 540   ret<<"body { color: black; background: white; margin-top: 1em; font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 10pt; position: relative; }"<<endl;
 541   ret<<"a { color: #0959c2; }"<<endl;
 542   ret<<"a:hover { color: #3B8EC8; }"<<endl;
 543   ret<<".row { width: 940px; max-width: 100%; min-width: 768px; margin: 0 auto; }"<<endl;
 544   ret<<".row:before, .row:after { display: table; content:\" \"; }"<<endl;
 545   ret<<".row:after { clear: both; }"<<endl;
 546   ret<<".columns { position: relative; min-height: 1px; float: left; }"<<endl;
 547   ret<<".all { width: 100%; }"<<endl;
 548   ret<<".headl { width: 60%; }"<<endl;
 549   ret<<".headr { width: 39.5%; float: right; background-repeat: no-repeat; margin-top: 7px; ";
 550   ret<<"background-image: url(data:image/png;base64,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);";
 551   ret<<" width: 154px; height: 20px; }"<<endl;
 552   ret<<"a#appname { margin: 0; font-size: 27px; color: #666; text-decoration: none; font-weight: bold; display: block; }"<<endl;
 553   ret<<"footer { border-top:  1px solid #ddd; padding-top: 4px; font-size: 12px; }"<<endl;
 554   ret<<"footer.row { margin-top: 1em; margin-bottom: 1em; }"<<endl;
 555   ret<<".panel { background: #f2f2f2; border: 1px solid #e6e6e6; margin: 0 0 22px 0; padding: 20px; }"<<endl;
 556   ret<<"table.data { width: 100%; border-spacing: 0; border-top: 1px solid #333; }"<<endl;
 557   ret<<"table.data td { border-bottom: 1px solid #333; padding: 2px; }"<<endl;
 558   ret<<"table.data tr:nth-child(2n) { background: #e2e2e2; }"<<endl;
 559   ret<<"table.data tr:hover { background: white; }"<<endl;
 560   ret<<".ringmeta { margin-bottom: 5px; }"<<endl;
 561   ret<<".resetring {float: right; }"<<endl;
 562   ret<<".resetring i { background-image: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAoAAAAKCAYAAACNMs+9AAAA/klEQVQY01XPP04UUBgE8N/33vd2XZUWEuzYuMZEG4KFCQn2NhA4AIewAOMBPIG2xhNYeAcKGqkNCdmYlVBZGBIT4FHsbuE0U8xk/kAbqm9TOfI/nicfhmwgDNhvylUT58kxCp4l31L8SfH9IetJ2ev6PwyIwyZWsdb11/gbTK55Co+r8rmJaRPTFJcpZil+pTit7C5awMpA+Zpi1sRFE9MqflYOloYCjY2uP8EdYiGU4CVGUBubxKfOOLjrtOBmzvEilbVb/aQWvhRl0unBZVXe4XdnK+bprwqnhoyTsyZ+JG8Wk0apfExxlcp7PFruXH8gdxamWB4cyW2sIO4BG3czIp78jUIAAAAASUVORK5CYII=); width: 10px; height: 10px; margin-right: 2px; display: inline-block; background-repeat: no-repeat; }"<<endl;
 563   ret<<".resetring:hover i { background-image: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAoAAAAKCAYAAACNMs+9AAAA2ElEQVQY013PMUoDcRDF4c+kEzxCsNNCrBQvIGhnlcYm11EkBxAraw8gglgIoiJpAoKIYlBcgrgopsma3c3fwt1k9cHA480M8xvQp/nMjorOWY5ov7IAYlpjQk7aYxcuWBpwFQgJnUcaYk7GhEDIGL5w+MVpKLIRyR2b4JOjvGhUKzHTv2W7iuSN479Dvu9plf1awbQ6y3x1sU5tjpVJcMbakF6Ycoas8Dl5xEHJ160wRdfqzXfa6XQ4PLDlicWUjxHxZfndL/N+RhiwNzl/Q6PDhn/qsl76H7prcApk2B1aAAAAAElFTkSuQmCC);}"<<endl;
 564   ret<<".resizering {float: right;}"<<endl;
 565   return ret.str();
 566 }
 567
 568 void StatWebServer::launch()
 569 {
 570   try {
 571     d_ws->setCaller(this);
 572     d_ws->registerHandler("",&indexfunction);
 573     d_ws->registerHandler("style.css",&cssfunction);
 574     if(::arg().mustDo("experimental-json-interface"))
 575       d_ws->registerHandler("jsonstat", &jsonstat);
 576     d_ws->go();
 577   }
 578   catch(...) {
 579     L<<Logger::Error<<"StatWebserver thread caught an exception, dying"<<endl;
 580     exit(1);
 581   }
 582 }