pdns/rec_channel_rec.cc

   1 #ifdef HAVE_CONFIG_H
   2 #include "config.h"
   3 #endif
   4 #include "utility.hh"
   5 #include "rec_channel.hh"
   6 #include <boost/bind.hpp>
   7 #include <vector>
   8 #ifdef MALLOC_TRACE
   9 #include "malloctrace.hh"
  10 #endif
  11 #include "misc.hh"
  12 #include "recursor_cache.hh"
  13 #include "syncres.hh"
  14 #include "negcache.hh"
  15 #include <boost/function.hpp>
  16 #include <boost/optional.hpp>
  17 #include <boost/tuple/tuple.hpp>
  18 #include <boost/format.hpp>
  19 #include <boost/algorithm/string.hpp>
  20
  21 #include "version.hh"
  22 #include <sys/types.h>
  23 #include <sys/stat.h>
  24 #include <fcntl.h>
  25 #include "logger.hh"
  26 #include "dnsparser.hh"
  27 #include "arguments.hh"
  28 #include <sys/resource.h>
  29 #include <sys/time.h>
  30 #include "lock.hh"
  31 #include "responsestats.hh"
  32 #include "rec-lua-conf.hh"
  33
  34 #include "validate-recursor.hh"
  35 #include "filterpo.hh"
  36
  37 #include "secpoll-recursor.hh"
  38 #include "pubsuffix.hh"
  39 #include "namespaces.hh"
  40 pthread_mutex_t g_carbon_config_lock=PTHREAD_MUTEX_INITIALIZER;
  41
  42 static map<string, const uint32_t*> d_get32bitpointers;
  43 static map<string, const uint64_t*> d_get64bitpointers;
  44 static map<string, const std::atomic<uint64_t>*> d_getatomics;
  45 static map<string, function< uint64_t() > >  d_get64bitmembers;
  46 static pthread_mutex_t d_dynmetricslock = PTHREAD_MUTEX_INITIALIZER;
  47 static map<string, std::atomic<unsigned long>* > d_dynmetrics;
  48
  49 static void addGetStat(const string& name, const uint32_t* place)
  50 {
  51   d_get32bitpointers[name]=place;
  52 }
  53
  54 static void addGetStat(const string& name, const std::atomic<uint64_t>* place)
  55 {
  56   d_getatomics[name]=place;
  57 }
  58
  59 static void addGetStat(const string& name, function<uint64_t ()> f )
  60 {
  61   d_get64bitmembers[name]=f;
  62 }
  63
  64 std::atomic<unsigned long>* getDynMetric(const std::string& str)
  65 {
  66   Lock l(&d_dynmetricslock);
  67   auto f = d_dynmetrics.find(str);
  68   if(f != d_dynmetrics.end())
  69     return f->second;
  70
  71   auto ret = new std::atomic<unsigned long>();
  72   d_dynmetrics[str]= ret;
  73   return ret;
  74 }
  75
  76 static optional<uint64_t> get(const string& name)
  77 {
  78   optional<uint64_t> ret;
  79
  80   if(d_get32bitpointers.count(name))
  81     return *d_get32bitpointers.find(name)->second;
  82   if(d_get64bitpointers.count(name))
  83     return *d_get64bitpointers.find(name)->second;
  84   if(d_getatomics.count(name))
  85     return d_getatomics.find(name)->second->load();
  86   if(d_get64bitmembers.count(name))
  87     return d_get64bitmembers.find(name)->second();
  88
  89   Lock l(&d_dynmetricslock);
  90   auto f =rplookup(d_dynmetrics, name);
  91   if(f)
  92     return (*f)->load();
  93
  94   return ret;
  95 }
  96
  97 optional<uint64_t> getStatByName(const std::string& name)
  98 {
  99   return get(name);
 100 }
 101
 102 map<string,string> getAllStatsMap()
 103 {
 104   map<string,string> ret;
 105
 106   for(const auto& the32bits :  d_get32bitpointers) {
 107     ret.insert(make_pair(the32bits.first, std::to_string(*the32bits.second)));
 108   }
 109   for(const auto& the64bits :  d_get64bitpointers) {
 110     ret.insert(make_pair(the64bits.first, std::to_string(*the64bits.second)));
 111   }
 112   for(const auto& atomic :  d_getatomics) {
 113     ret.insert(make_pair(atomic.first, std::to_string(atomic.second->load())));
 114   }
 115
 116   for(const auto& the64bitmembers :  d_get64bitmembers) {
 117     if(the64bitmembers.first == "cache-bytes" || the64bitmembers.first=="packetcache-bytes")
 118       continue; // too slow for 'get-all'
 119     ret.insert(make_pair(the64bitmembers.first, std::to_string(the64bitmembers.second())));
 120   }
 121   Lock l(&d_dynmetricslock);
 122   for(const auto& a : d_dynmetrics)
 123     ret.insert({a.first, std::to_string(*a.second)});
 124   return ret;
 125 }
 126
 127 string getAllStats()
 128 {
 129   typedef map<string, string> varmap_t;
 130   varmap_t varmap = getAllStatsMap();
 131   string ret;
 132   for(varmap_t::value_type& tup :  varmap) {
 133     ret += tup.first + "\t" + tup.second +"\n";
 134   }
 135   return ret;
 136 }
 137
 138 template<typename T>
 139 string doGet(T begin, T end)
 140 {
 141   string ret;
 142
 143   for(T i=begin; i != end; ++i) {
 144     optional<uint64_t> num=get(*i);
 145     if(num)
 146       ret+=std::to_string(*num)+"\n";
 147     else
 148       ret+="UNKNOWN\n";
 149   }
 150   return ret;
 151 }
 152
 153 template<typename T>
 154 string doGetParameter(T begin, T end)
 155 {
 156   string ret;
 157   string parm;
 158   using boost::replace_all;
 159   for(T i=begin; i != end; ++i) {
 160     if(::arg().parmIsset(*i)) {
 161       parm=::arg()[*i];
 162       replace_all(parm, "\\", "\\\\");
 163       replace_all(parm, "\"", "\\\"");
 164       replace_all(parm, "\n", "\\n");
 165       ret += *i +"=\""+ parm +"\"\n";
 166     }
 167     else
 168       ret += *i +" not known\n";
 169   }
 170   return ret;
 171 }
 172
 173
 174 static uint64_t dumpNegCache(NegCache& negcache, int fd)
 175 {
 176   FILE* fp=fdopen(dup(fd), "w");
 177   if(!fp) { // dup probably failed
 178     return 0;
 179   }
 180   uint64_t ret;
 181   fprintf(fp, "; negcache dump from thread follows\n;\n");
 182   ret = negcache.dumpToFile(fp);
 183   fclose(fp);
 184   return ret;
 185 }
 186
 187 static uint64_t* pleaseDump(int fd)
 188 {
 189   return new uint64_t(t_RC->doDump(fd) + dumpNegCache(SyncRes::t_sstorage.negcache, fd) + t_packetCache->doDump(fd));
 190 }
 191
 192 static uint64_t* pleaseDumpNSSpeeds(int fd)
 193 {
 194   return new uint64_t(SyncRes::doDumpNSSpeeds(fd));
 195 }
 196
 197 template<typename T>
 198 string doDumpNSSpeeds(T begin, T end)
 199 {
 200   T i=begin;
 201   string fname;
 202
 203   if(i!=end)
 204     fname=*i;
 205
 206   int fd=open(fname.c_str(), O_CREAT | O_EXCL | O_WRONLY, 0660);
 207   if(fd < 0)
 208     return "Error opening dump file for writing: "+string(strerror(errno))+"\n";
 209   uint64_t total = 0;
 210   try {
 211     total = broadcastAccFunction<uint64_t>(boost::bind(pleaseDumpNSSpeeds, fd));
 212   }
 213   catch(std::exception& e)
 214   {
 215     close(fd);
 216     return "error dumping NS speeds: "+string(e.what())+"\n";
 217   }
 218   catch(PDNSException& e)
 219   {
 220     close(fd);
 221     return "error dumping NS speeds: "+e.reason+"\n";
 222   }
 223
 224   close(fd);
 225   return "dumped "+std::to_string(total)+" records\n";
 226 }
 227
 228 template<typename T>
 229 string doDumpCache(T begin, T end)
 230 {
 231   T i=begin;
 232   string fname;
 233
 234   if(i!=end)
 235     fname=*i;
 236
 237   int fd=open(fname.c_str(), O_CREAT | O_EXCL | O_WRONLY, 0660);
 238   if(fd < 0)
 239     return "Error opening dump file for writing: "+string(strerror(errno))+"\n";
 240   uint64_t total = 0;
 241   try {
 242     total = broadcastAccFunction<uint64_t>(boost::bind(pleaseDump, fd));
 243   }
 244   catch(...){}
 245
 246   close(fd);
 247   return "dumped "+std::to_string(total)+" records\n";
 248 }
 249
 250 template<typename T>
 251 string doDumpEDNSStatus(T begin, T end)
 252 {
 253   T i=begin;
 254   string fname;
 255
 256   if(i!=end)
 257     fname=*i;
 258
 259   int fd=open(fname.c_str(), O_CREAT | O_EXCL | O_WRONLY, 0660);
 260   if(fd < 0)
 261     return "Error opening dump file for writing: "+string(strerror(errno))+"\n";
 262
 263   SyncRes::doEDNSDumpAndClose(fd);
 264
 265   return "done\n";
 266 }
 267
 268 template<typename T>
 269 string doDumpRPZ(T begin, T end)
 270 {
 271   T i=begin;
 272
 273   if (i == end) {
 274     return "No zone name specified\n";
 275   }
 276   string zoneName = *i;
 277   i++;
 278
 279   if (i == end) {
 280     return "No file name specified\n";
 281   }
 282   string fname = *i;
 283
 284   auto luaconf = g_luaconfs.getLocal();
 285   const auto zone = luaconf->dfe.getZone(zoneName);
 286   if (!zone) {
 287     return "No RPZ zone named "+zoneName+"\n";
 288   }
 289
 290   int fd = open(fname.c_str(), O_CREAT | O_EXCL | O_WRONLY, 0660);
 291
 292   if(fd < 0) {
 293     return "Error opening dump file for writing: "+string(strerror(errno))+"\n";
 294   }
 295
 296   FILE* fp = fdopen(fd, "w");
 297   if (!fp) {
 298     close(fd);
 299     return "Error converting file descriptor: "+string(strerror(errno))+"\n";
 300   }
 301
 302   zone->dump(fp);
 303   fclose(fp);
 304
 305   return "done\n";
 306 }
 307
 308 uint64_t* pleaseWipeCache(const DNSName& canon, bool subtree)
 309 {
 310   return new uint64_t(t_RC->doWipeCache(canon, subtree));
 311 }
 312
 313 uint64_t* pleaseWipePacketCache(const DNSName& canon, bool subtree)
 314 {
 315   return new uint64_t(t_packetCache->doWipePacketCache(canon,0xffff, subtree));
 316 }
 317
 318
 319 uint64_t* pleaseWipeAndCountNegCache(const DNSName& canon, bool subtree)
 320 {
 321   uint64_t ret = SyncRes::wipeNegCache(canon, subtree);
 322   return new uint64_t(ret);
 323 }
 324
 325
 326 template<typename T>
 327 string doWipeCache(T begin, T end)
 328 {
 329   vector<pair<DNSName, bool> > toWipe;
 330   for(T i=begin; i != end; ++i) {
 331     DNSName canon;
 332     bool subtree=false;
 333
 334     try {
 335       if(boost::ends_with(*i, "$")) {
 336         canon=DNSName(i->substr(0, i->size()-1));
 337         subtree=true;
 338       } else {
 339         canon=DNSName(*i);
 340       }
 341     } catch (std::exception &e) {
 342       return "Error: " + std::string(e.what()) + ", nothing wiped\n";
 343     }
 344     toWipe.push_back({canon, subtree});
 345   }
 346
 347   int count=0, pcount=0, countNeg=0;
 348   for (auto wipe : toWipe) {
 349     count+= broadcastAccFunction<uint64_t>(boost::bind(pleaseWipeCache, wipe.first, wipe.second));
 350     pcount+= broadcastAccFunction<uint64_t>(boost::bind(pleaseWipePacketCache, wipe.first, wipe.second));
 351     countNeg+=broadcastAccFunction<uint64_t>(boost::bind(pleaseWipeAndCountNegCache, wipe.first, wipe.second));
 352   }
 353
 354   return "wiped "+std::to_string(count)+" records, "+std::to_string(countNeg)+" negative records, "+std::to_string(pcount)+" packets\n";
 355 }
 356
 357 template<typename T>
 358 string doSetCarbonServer(T begin, T end)
 359 {
 360   Lock l(&g_carbon_config_lock);
 361   if(begin==end) {
 362     ::arg().set("carbon-server").clear();
 363     return "cleared carbon-server setting\n";
 364   }
 365   string ret;
 366   ::arg().set("carbon-server")=*begin;
 367   ret="set carbon-server to '"+::arg()["carbon-server"]+"'\n";
 368   ++begin;
 369   if(begin != end) {
 370     ::arg().set("carbon-ourname")=*begin;
 371     ret+="set carbon-ourname to '"+*begin+"'\n";
 372   }
 373   return ret;
 374 }
 375
 376 template<typename T>
 377 string doSetDnssecLogBogus(T begin, T end)
 378 {
 379   if(checkDNSSECDisabled())
 380     return "DNSSEC is disabled in the configuration, not changing the Bogus logging setting\n";
 381
 382   if (begin == end)
 383     return "No DNSSEC Bogus logging setting specified\n";
 384
 385   if (pdns_iequals(*begin, "on") || pdns_iequals(*begin, "yes")) {
 386     if (!g_dnssecLogBogus) {
 387       L<<Logger::Warning<<"Enabling DNSSEC Bogus logging, requested via control channel"<<endl;
 388       g_dnssecLogBogus = true;
 389       return "DNSSEC Bogus logging enabled\n";
 390     }
 391     return "DNSSEC Bogus logging was already enabled\n";
 392   }
 393
 394   if (pdns_iequals(*begin, "off") || pdns_iequals(*begin, "no")) {
 395     if (g_dnssecLogBogus) {
 396       L<<Logger::Warning<<"Disabling DNSSEC Bogus logging, requested via control channel"<<endl;
 397       g_dnssecLogBogus = false;
 398       return "DNSSEC Bogus logging disabled\n";
 399     }
 400     return "DNSSEC Bogus logging was already disabled\n";
 401   }
 402
 403   return "Unknown DNSSEC Bogus setting: '" + *begin +"'\n";
 404 }
 405
 406 template<typename T>
 407 string doAddNTA(T begin, T end)
 408 {
 409   if(checkDNSSECDisabled())
 410     return "DNSSEC is disabled in the configuration, not adding a Negative Trust Anchor\n";
 411
 412   if(begin == end)
 413     return "No NTA specified, doing nothing\n";
 414
 415   DNSName who;
 416   try {
 417     who = DNSName(*begin);
 418   }
 419   catch(std::exception &e) {
 420     string ret("Can't add Negative Trust Anchor: ");
 421     ret += e.what();
 422     ret += "\n";
 423     return ret;
 424   }
 425   begin++;
 426
 427   string why("");
 428   while (begin != end) {
 429     why += *begin;
 430     begin++;
 431     if (begin != end)
 432       why += " ";
 433   }
 434   L<<Logger::Warning<<"Adding Negative Trust Anchor for "<<who<<" with reason '"<<why<<"', requested via control channel"<<endl;
 435   g_luaconfs.modify([who, why](LuaConfigItems& lci) {
 436       lci.negAnchors[who] = why;
 437       });
 438   broadcastAccFunction<uint64_t>(boost::bind(pleaseWipePacketCache, who, true));
 439   return "Added Negative Trust Anchor for " + who.toLogString() + " with reason '" + why + "'\n";
 440 }
 441
 442 template<typename T>
 443 string doClearNTA(T begin, T end)
 444 {
 445   if(checkDNSSECDisabled())
 446     return "DNSSEC is disabled in the configuration, not removing a Negative Trust Anchor\n";
 447
 448   if(begin == end)
 449     return "No Negative Trust Anchor specified, doing nothing.\n";
 450
 451   if (begin + 1 == end && *begin == "*"){
 452     L<<Logger::Warning<<"Clearing all Negative Trust Anchors, requested via control channel"<<endl;
 453     g_luaconfs.modify([](LuaConfigItems& lci) {
 454         lci.negAnchors.clear();
 455       });
 456     return "Cleared all Negative Trust Anchors.\n";
 457   }
 458
 459   vector<DNSName> toRemove;
 460   DNSName who;
 461   while (begin != end) {
 462     if (*begin == "*")
 463       return "Don't mix all Negative Trust Anchor removal with multiple Negative Trust Anchor removal. Nothing removed\n";
 464     try {
 465       who = DNSName(*begin);
 466     }
 467     catch(std::exception &e) {
 468       string ret("Error: ");
 469       ret += e.what();
 470       ret += ". No Negative Anchors removed\n";
 471       return ret;
 472     }
 473     toRemove.push_back(who);
 474     begin++;
 475   }
 476
 477   string removed("");
 478   bool first(true);
 479   for (auto const &entry : toRemove) {
 480     L<<Logger::Warning<<"Clearing Negative Trust Anchor for "<<entry<<", requested via control channel"<<endl;
 481     g_luaconfs.modify([entry](LuaConfigItems& lci) {
 482         lci.negAnchors.erase(entry);
 483       });
 484     broadcastAccFunction<uint64_t>(boost::bind(pleaseWipePacketCache, entry, true));
 485     if (!first) {
 486       first = false;
 487       removed += ",";
 488     }
 489     removed += " " + entry.toStringRootDot();
 490   }
 491   return "Removed Negative Trust Anchors for " + removed + "\n";
 492 }
 493
 494 static string getNTAs()
 495 {
 496   if(checkDNSSECDisabled())
 497     return "DNSSEC is disabled in the configuration\n";
 498
 499   string ret("Configured Negative Trust Anchors:\n");
 500   auto luaconf = g_luaconfs.getLocal();
 501   for (auto negAnchor : luaconf->negAnchors)
 502     ret += negAnchor.first.toLogString() + "\t" + negAnchor.second + "\n";
 503   return ret;
 504 }
 505
 506 template<typename T>
 507 string doAddTA(T begin, T end)
 508 {
 509   if(checkDNSSECDisabled())
 510     return "DNSSEC is disabled in the configuration, not adding a Trust Anchor\n";
 511
 512   if(begin == end)
 513     return "No TA specified, doing nothing\n";
 514
 515   DNSName who;
 516   try {
 517     who = DNSName(*begin);
 518   }
 519   catch(std::exception &e) {
 520     string ret("Can't add Trust Anchor: ");
 521     ret += e.what();
 522     ret += "\n";
 523     return ret;
 524   }
 525   begin++;
 526
 527   string what("");
 528   while (begin != end) {
 529     what += *begin + " ";
 530     begin++;
 531   }
 532
 533   try {
 534     L<<Logger::Warning<<"Adding Trust Anchor for "<<who<<" with data '"<<what<<"', requested via control channel";
 535     g_luaconfs.modify([who, what](LuaConfigItems& lci) {
 536       auto ds = unique_ptr<DSRecordContent>(dynamic_cast<DSRecordContent*>(DSRecordContent::make(what)));
 537       lci.dsAnchors[who].insert(*ds);
 538       });
 539     broadcastAccFunction<uint64_t>(boost::bind(pleaseWipePacketCache, who, true));
 540     L<<Logger::Warning<<endl;
 541     return "Added Trust Anchor for " + who.toStringRootDot() + " with data " + what + "\n";
 542   }
 543   catch(std::exception &e) {
 544     L<<Logger::Warning<<", failed: "<<e.what()<<endl;
 545     return "Unable to add Trust Anchor for " + who.toStringRootDot() + ": " + e.what() + "\n";
 546   }
 547 }
 548
 549 template<typename T>
 550 string doClearTA(T begin, T end)
 551 {
 552   if(checkDNSSECDisabled())
 553     return "DNSSEC is disabled in the configuration, not removing a Trust Anchor\n";
 554
 555   if(begin == end)
 556     return "No Trust Anchor to clear\n";
 557
 558   vector<DNSName> toRemove;
 559   DNSName who;
 560   while (begin != end) {
 561     try {
 562       who = DNSName(*begin);
 563     }
 564     catch(std::exception &e) {
 565       string ret("Error: ");
 566       ret += e.what();
 567       ret += ". No Anchors removed\n";
 568       return ret;
 569     }
 570     if (who.isRoot())
 571       return "Refusing to remove root Trust Anchor, no Anchors removed\n";
 572     toRemove.push_back(who);
 573     begin++;
 574   }
 575
 576   string removed("");
 577   bool first(true);
 578   for (auto const &entry : toRemove) {
 579     L<<Logger::Warning<<"Removing Trust Anchor for "<<entry<<", requested via control channel"<<endl;
 580     g_luaconfs.modify([entry](LuaConfigItems& lci) {
 581         lci.dsAnchors.erase(entry);
 582       });
 583     broadcastAccFunction<uint64_t>(boost::bind(pleaseWipePacketCache, entry, true));
 584     if (!first) {
 585       first = false;
 586       removed += ",";
 587     }
 588     removed += " " + entry.toStringRootDot();
 589   }
 590   return "Removed Trust Anchor(s) for" + removed + "\n";
 591 }
 592
 593 static string getTAs()
 594 {
 595   if(checkDNSSECDisabled())
 596     return "DNSSEC is disabled in the configuration\n";
 597
 598   string ret("Configured Trust Anchors:\n");
 599   auto luaconf = g_luaconfs.getLocal();
 600   for (auto anchor : luaconf->dsAnchors) {
 601     ret += anchor.first.toLogString() + "\n";
 602     for (auto e : anchor.second) {
 603       ret+="\t\t"+e.getZoneRepresentation() + "\n";
 604     }
 605   }
 606
 607   return ret;
 608 }
 609
 610 template<typename T>
 611 string setMinimumTTL(T begin, T end)
 612 {
 613   if(end-begin != 1)
 614     return "Need to supply new minimum TTL number\n";
 615   SyncRes::s_minimumTTL = pdns_stou(*begin);
 616   return "New minimum TTL: " + std::to_string(SyncRes::s_minimumTTL) + "\n";
 617 }
 618
 619 template<typename T>
 620 string setMaxCacheEntries(T begin, T end)
 621 {
 622   if(end-begin != 1)
 623     return "Need to supply new cache size\n";
 624   g_maxCacheEntries = pdns_stou(*begin);
 625   return "New max cache entries: " + std::to_string(g_maxCacheEntries) + "\n";
 626 }
 627
 628 template<typename T>
 629 string setMaxPacketCacheEntries(T begin, T end)
 630 {
 631   if(end-begin != 1)
 632     return "Need to supply new packet cache size\n";
 633   g_maxPacketCacheEntries = pdns_stou(*begin);
 634   return "New max packetcache entries: " + std::to_string(g_maxPacketCacheEntries) + "\n";
 635 }
 636
 637
 638 static uint64_t getSysTimeMsec()
 639 {
 640   struct rusage ru;
 641   getrusage(RUSAGE_SELF, &ru);
 642   return (ru.ru_stime.tv_sec*1000ULL + ru.ru_stime.tv_usec/1000);
 643 }
 644
 645 static uint64_t getUserTimeMsec()
 646 {
 647   struct rusage ru;
 648   getrusage(RUSAGE_SELF, &ru);
 649   return (ru.ru_utime.tv_sec*1000ULL + ru.ru_utime.tv_usec/1000);
 650 }
 651
 652 static uint64_t calculateUptime()
 653 {
 654   return time(0) - g_stats.startupTime;
 655 }
 656
 657 static string* pleaseGetCurrentQueries()
 658 {
 659   ostringstream ostr;
 660
 661   ostr << getMT()->d_waiters.size() <<" currently outstanding questions\n";
 662
 663   boost::format fmt("%1% %|40t|%2% %|47t|%3% %|63t|%4% %|68t|%5%\n");
 664
 665   ostr << (fmt % "qname" % "qtype" % "remote" % "tcp" % "chained");
 666   unsigned int n=0;
 667   for(const auto& mthread : getMT()->d_waiters) {
 668     const PacketID& pident = mthread.key;
 669     ostr << (fmt
 670              % pident.domain.toLogString() /* ?? */ % DNSRecordContent::NumberToType(pident.type)
 671              % pident.remote.toString() % (pident.sock ? 'Y' : 'n')
 672              % (pident.fd == -1 ? 'Y' : 'n')
 673              );
 674     ++n;
 675     if (n >= 100)
 676       break;
 677   }
 678   ostr <<" - done\n";
 679   return new string(ostr.str());
 680 }
 681
 682 static string doCurrentQueries()
 683 {
 684   return broadcastAccFunction<string>(pleaseGetCurrentQueries);
 685 }
 686
 687 uint64_t* pleaseGetThrottleSize()
 688 {
 689   return new uint64_t(SyncRes::getThrottledServersSize());
 690 }
 691
 692 static uint64_t getThrottleSize()
 693 {
 694   return broadcastAccFunction<uint64_t>(pleaseGetThrottleSize);
 695 }
 696
 697 uint64_t* pleaseGetNegCacheSize()
 698 {
 699   uint64_t tmp=(SyncRes::getNegCacheSize());
 700   return new uint64_t(tmp);
 701 }
 702
 703 uint64_t getNegCacheSize()
 704 {
 705   return broadcastAccFunction<uint64_t>(pleaseGetNegCacheSize);
 706 }
 707
 708 uint64_t* pleaseGetFailedHostsSize()
 709 {
 710   uint64_t tmp=(SyncRes::getThrottledServersSize());
 711   return new uint64_t(tmp);
 712 }
 713 uint64_t getFailedHostsSize()
 714 {
 715   return broadcastAccFunction<uint64_t>(pleaseGetFailedHostsSize);
 716 }
 717
 718 uint64_t* pleaseGetNsSpeedsSize()
 719 {
 720   return new uint64_t(SyncRes::getNSSpeedsSize());
 721 }
 722
 723 uint64_t getNsSpeedsSize()
 724 {
 725   return broadcastAccFunction<uint64_t>(pleaseGetNsSpeedsSize);
 726 }
 727
 728 uint64_t* pleaseGetConcurrentQueries()
 729 {
 730   return new uint64_t(getMT() ? getMT()->numProcesses() : 0);
 731 }
 732
 733 static uint64_t getConcurrentQueries()
 734 {
 735   return broadcastAccFunction<uint64_t>(pleaseGetConcurrentQueries);
 736 }
 737
 738 uint64_t* pleaseGetCacheSize()
 739 {
 740   return new uint64_t(t_RC ? t_RC->size() : 0);
 741 }
 742
 743 uint64_t* pleaseGetCacheBytes()
 744 {
 745   return new uint64_t(t_RC ? t_RC->bytes() : 0);
 746 }
 747
 748
 749 uint64_t doGetCacheSize()
 750 {
 751   return broadcastAccFunction<uint64_t>(pleaseGetCacheSize);
 752 }
 753
 754 uint64_t doGetAvgLatencyUsec()
 755 {
 756   return (uint64_t) g_stats.avgLatencyUsec;
 757 }
 758
 759
 760 uint64_t doGetCacheBytes()
 761 {
 762   return broadcastAccFunction<uint64_t>(pleaseGetCacheBytes);
 763 }
 764
 765 uint64_t* pleaseGetCacheHits()
 766 {
 767   return new uint64_t(t_RC ? t_RC->cacheHits : 0);
 768 }
 769
 770 uint64_t doGetCacheHits()
 771 {
 772   return broadcastAccFunction<uint64_t>(pleaseGetCacheHits);
 773 }
 774
 775 uint64_t* pleaseGetCacheMisses()
 776 {
 777   return new uint64_t(t_RC ? t_RC->cacheMisses : 0);
 778 }
 779
 780 uint64_t doGetCacheMisses()
 781 {
 782   return broadcastAccFunction<uint64_t>(pleaseGetCacheMisses);
 783 }
 784
 785
 786 uint64_t* pleaseGetPacketCacheSize()
 787 {
 788   return new uint64_t(t_packetCache ? t_packetCache->size() : 0);
 789 }
 790
 791 uint64_t* pleaseGetPacketCacheBytes()
 792 {
 793   return new uint64_t(t_packetCache ? t_packetCache->bytes() : 0);
 794 }
 795
 796
 797 uint64_t doGetPacketCacheSize()
 798 {
 799   return broadcastAccFunction<uint64_t>(pleaseGetPacketCacheSize);
 800 }
 801
 802 uint64_t doGetPacketCacheBytes()
 803 {
 804   return broadcastAccFunction<uint64_t>(pleaseGetPacketCacheBytes);
 805 }
 806
 807
 808 uint64_t* pleaseGetPacketCacheHits()
 809 {
 810   return new uint64_t(t_packetCache ? t_packetCache->d_hits : 0);
 811 }
 812
 813 uint64_t doGetPacketCacheHits()
 814 {
 815   return broadcastAccFunction<uint64_t>(pleaseGetPacketCacheHits);
 816 }
 817
 818 uint64_t* pleaseGetPacketCacheMisses()
 819 {
 820   return new uint64_t(t_packetCache ? t_packetCache->d_misses : 0);
 821 }
 822
 823 uint64_t doGetPacketCacheMisses()
 824 {
 825   return broadcastAccFunction<uint64_t>(pleaseGetPacketCacheMisses);
 826 }
 827
 828 uint64_t doGetMallocated()
 829 {
 830   // this turned out to be broken
 831 /*  struct mallinfo mi = mallinfo();
 832   return mi.uordblks; */
 833   return 0;
 834 }
 835
 836 extern ResponseStats g_rs;
 837
 838 void registerAllStats()
 839 {
 840   static std::atomic_flag s_init = ATOMIC_FLAG_INIT;
 841   if(s_init.test_and_set())
 842     return;
 843
 844   addGetStat("questions", &g_stats.qcounter);
 845   addGetStat("ipv6-questions", &g_stats.ipv6qcounter);
 846   addGetStat("tcp-questions", &g_stats.tcpqcounter);
 847
 848   addGetStat("cache-hits", doGetCacheHits);
 849   addGetStat("cache-misses", doGetCacheMisses);
 850   addGetStat("cache-entries", doGetCacheSize);
 851   addGetStat("max-cache-entries", []() { return g_maxCacheEntries.load(); });
 852   addGetStat("max-packetcache-entries", []() { return g_maxPacketCacheEntries.load();});
 853   addGetStat("cache-bytes", doGetCacheBytes);
 854
 855   addGetStat("packetcache-hits", doGetPacketCacheHits);
 856   addGetStat("packetcache-misses", doGetPacketCacheMisses);
 857   addGetStat("packetcache-entries", doGetPacketCacheSize);
 858   addGetStat("packetcache-bytes", doGetPacketCacheBytes);
 859
 860   addGetStat("malloc-bytes", doGetMallocated);
 861
 862   addGetStat("servfail-answers", &g_stats.servFails);
 863   addGetStat("nxdomain-answers", &g_stats.nxDomains);
 864   addGetStat("noerror-answers", &g_stats.noErrors);
 865
 866   addGetStat("unauthorized-udp", &g_stats.unauthorizedUDP);
 867   addGetStat("unauthorized-tcp", &g_stats.unauthorizedTCP);
 868   addGetStat("tcp-client-overflow", &g_stats.tcpClientOverflow);
 869
 870   addGetStat("client-parse-errors", &g_stats.clientParseError);
 871   addGetStat("server-parse-errors", &g_stats.serverParseError);
 872   addGetStat("too-old-drops", &g_stats.tooOldDrops);
 873   addGetStat("query-pipe-full-drops", &g_stats.queryPipeFullDrops);
 874
 875   addGetStat("answers0-1", &g_stats.answers0_1);
 876   addGetStat("answers1-10", &g_stats.answers1_10);
 877   addGetStat("answers10-100", &g_stats.answers10_100);
 878   addGetStat("answers100-1000", &g_stats.answers100_1000);
 879   addGetStat("answers-slow", &g_stats.answersSlow);
 880
 881   addGetStat("x-ourtime0-1", &g_stats.ourtime0_1);
 882   addGetStat("x-ourtime1-2", &g_stats.ourtime1_2);
 883   addGetStat("x-ourtime2-4", &g_stats.ourtime2_4);
 884   addGetStat("x-ourtime4-8", &g_stats.ourtime4_8);
 885   addGetStat("x-ourtime8-16", &g_stats.ourtime8_16);
 886   addGetStat("x-ourtime16-32", &g_stats.ourtime16_32);
 887   addGetStat("x-ourtime-slow", &g_stats.ourtimeSlow);
 888
 889   addGetStat("auth4-answers0-1", &g_stats.auth4Answers0_1);
 890   addGetStat("auth4-answers1-10", &g_stats.auth4Answers1_10);
 891   addGetStat("auth4-answers10-100", &g_stats.auth4Answers10_100);
 892   addGetStat("auth4-answers100-1000", &g_stats.auth4Answers100_1000);
 893   addGetStat("auth4-answers-slow", &g_stats.auth4AnswersSlow);
 894
 895   addGetStat("auth6-answers0-1", &g_stats.auth6Answers0_1);
 896   addGetStat("auth6-answers1-10", &g_stats.auth6Answers1_10);
 897   addGetStat("auth6-answers10-100", &g_stats.auth6Answers10_100);
 898   addGetStat("auth6-answers100-1000", &g_stats.auth6Answers100_1000);
 899   addGetStat("auth6-answers-slow", &g_stats.auth6AnswersSlow);
 900
 901
 902   addGetStat("qa-latency", doGetAvgLatencyUsec);
 903   addGetStat("x-our-latency", []() { return g_stats.avgLatencyOursUsec; });
 904   addGetStat("unexpected-packets", &g_stats.unexpectedCount);
 905   addGetStat("case-mismatches", &g_stats.caseMismatchCount);
 906   addGetStat("spoof-prevents", &g_stats.spoofCount);
 907
 908   addGetStat("nsset-invalidations", &g_stats.nsSetInvalidations);
 909
 910   addGetStat("resource-limits", &g_stats.resourceLimits);
 911   addGetStat("over-capacity-drops", &g_stats.overCapacityDrops);
 912   addGetStat("policy-drops", &g_stats.policyDrops);
 913   addGetStat("no-packet-error", &g_stats.noPacketError);
 914   addGetStat("dlg-only-drops", &SyncRes::s_nodelegated);
 915   addGetStat("ignored-packets", &g_stats.ignoredCount);
 916   addGetStat("max-mthread-stack", &g_stats.maxMThreadStackUsage);
 917
 918   addGetStat("negcache-entries", boost::bind(getNegCacheSize));
 919   addGetStat("throttle-entries", boost::bind(getThrottleSize));
 920
 921   addGetStat("nsspeeds-entries", boost::bind(getNsSpeedsSize));
 922   addGetStat("failed-host-entries", boost::bind(getFailedHostsSize));
 923
 924   addGetStat("concurrent-queries", boost::bind(getConcurrentQueries));
 925   addGetStat("security-status", &g_security_status);
 926   addGetStat("outgoing-timeouts", &SyncRes::s_outgoingtimeouts);
 927   addGetStat("outgoing4-timeouts", &SyncRes::s_outgoing4timeouts);
 928   addGetStat("outgoing6-timeouts", &SyncRes::s_outgoing6timeouts);
 929   addGetStat("auth-zone-queries", &SyncRes::s_authzonequeries);
 930   addGetStat("tcp-outqueries", &SyncRes::s_tcpoutqueries);
 931   addGetStat("all-outqueries", &SyncRes::s_outqueries);
 932   addGetStat("ipv6-outqueries", &g_stats.ipv6queries);
 933   addGetStat("throttled-outqueries", &SyncRes::s_throttledqueries);
 934   addGetStat("dont-outqueries", &SyncRes::s_dontqueries);
 935   addGetStat("throttled-out", &SyncRes::s_throttledqueries);
 936   addGetStat("unreachables", &SyncRes::s_unreachables);
 937   addGetStat("ecs-queries", &SyncRes::s_ecsqueries);
 938   addGetStat("ecs-responses", &SyncRes::s_ecsresponses);
 939   addGetStat("chain-resends", &g_stats.chainResends);
 940   addGetStat("tcp-clients", boost::bind(TCPConnection::getCurrentConnections));
 941
 942 #ifdef __linux__
 943   addGetStat("udp-recvbuf-errors", boost::bind(udpErrorStats, "udp-recvbuf-errors"));
 944   addGetStat("udp-sndbuf-errors", boost::bind(udpErrorStats, "udp-sndbuf-errors"));
 945   addGetStat("udp-noport-errors", boost::bind(udpErrorStats, "udp-noport-errors"));
 946   addGetStat("udp-in-errors", boost::bind(udpErrorStats, "udp-in-errors"));
 947 #endif
 948
 949   addGetStat("edns-ping-matches", &g_stats.ednsPingMatches);
 950   addGetStat("edns-ping-mismatches", &g_stats.ednsPingMismatches);
 951   addGetStat("dnssec-queries", &g_stats.dnssecQueries);
 952
 953   addGetStat("noping-outqueries", &g_stats.noPingOutQueries);
 954   addGetStat("noedns-outqueries", &g_stats.noEdnsOutQueries);
 955
 956   addGetStat("uptime", calculateUptime);
 957   addGetStat("real-memory-usage", boost::bind(getRealMemoryUsage, string()));
 958   addGetStat("fd-usage", boost::bind(getOpenFileDescriptors, string()));
 959
 960   //  addGetStat("query-rate", getQueryRate);
 961   addGetStat("user-msec", getUserTimeMsec);
 962   addGetStat("sys-msec", getSysTimeMsec);
 963
 964 #ifdef MALLOC_TRACE
 965   addGetStat("memory-allocs", boost::bind(&MallocTracer::getAllocs, g_mtracer, string()));
 966   addGetStat("memory-alloc-flux", boost::bind(&MallocTracer::getAllocFlux, g_mtracer, string()));
 967   addGetStat("memory-allocated", boost::bind(&MallocTracer::getTotAllocated, g_mtracer, string()));
 968 #endif
 969
 970   addGetStat("dnssec-validations", &g_stats.dnssecValidations);
 971   addGetStat("dnssec-result-insecure", &g_stats.dnssecResults[Insecure]);
 972   addGetStat("dnssec-result-secure", &g_stats.dnssecResults[Secure]);
 973   addGetStat("dnssec-result-bogus", &g_stats.dnssecResults[Bogus]);
 974   addGetStat("dnssec-result-indeterminate", &g_stats.dnssecResults[Indeterminate]);
 975   addGetStat("dnssec-result-nta", &g_stats.dnssecResults[NTA]);
 976
 977   addGetStat("policy-result-noaction", &g_stats.policyResults[DNSFilterEngine::PolicyKind::NoAction]);
 978   addGetStat("policy-result-drop", &g_stats.policyResults[DNSFilterEngine::PolicyKind::Drop]);
 979   addGetStat("policy-result-nxdomain", &g_stats.policyResults[DNSFilterEngine::PolicyKind::NXDOMAIN]);
 980   addGetStat("policy-result-nodata", &g_stats.policyResults[DNSFilterEngine::PolicyKind::NODATA]);
 981   addGetStat("policy-result-truncate", &g_stats.policyResults[DNSFilterEngine::PolicyKind::Truncate]);
 982   addGetStat("policy-result-custom", &g_stats.policyResults[DNSFilterEngine::PolicyKind::Custom]);
 983 }
 984
 985 static void doExitGeneric(bool nicely)
 986 {
 987   L<<Logger::Error<<"Exiting on user request"<<endl;
 988   extern RecursorControlChannel s_rcc;
 989   s_rcc.~RecursorControlChannel();
 990
 991   extern string s_pidfname;
 992   if(!s_pidfname.empty())
 993     unlink(s_pidfname.c_str()); // we can at least try..
 994   if(nicely)
 995     exit(1);
 996   else
 997     _exit(1);
 998 }
 999
1000 static void doExit()
1001 {
1002   doExitGeneric(false);
1003 }
1004
1005 static void doExitNicely()
1006 {
1007   doExitGeneric(true);
1008 }
1009
1010 vector<pair<DNSName, uint16_t> >* pleaseGetQueryRing()
1011 {
1012   typedef pair<DNSName,uint16_t> query_t;
1013   vector<query_t >* ret = new vector<query_t>();
1014   if(!t_queryring)
1015     return ret;
1016   ret->reserve(t_queryring->size());
1017
1018   for(const query_t& q :  *t_queryring) {
1019     ret->push_back(q);
1020   }
1021   return ret;
1022 }
1023 vector<pair<DNSName,uint16_t> >* pleaseGetServfailQueryRing()
1024 {
1025   typedef pair<DNSName,uint16_t> query_t;
1026   vector<query_t>* ret = new vector<query_t>();
1027   if(!t_servfailqueryring)
1028     return ret;
1029   ret->reserve(t_servfailqueryring->size());
1030   for(const query_t& q :  *t_servfailqueryring) {
1031     ret->push_back(q);
1032   }
1033   return ret;
1034 }
1035
1036
1037
1038 typedef boost::function<vector<ComboAddress>*()> pleaseremotefunc_t;
1039 typedef boost::function<vector<pair<DNSName,uint16_t> >*()> pleasequeryfunc_t;
1040
1041 vector<ComboAddress>* pleaseGetRemotes()
1042 {
1043   vector<ComboAddress>* ret = new vector<ComboAddress>();
1044   if(!t_remotes)
1045     return ret;
1046
1047   ret->reserve(t_remotes->size());
1048   for(const ComboAddress& ca :  *t_remotes) {
1049     ret->push_back(ca);
1050   }
1051   return ret;
1052 }
1053
1054 vector<ComboAddress>* pleaseGetServfailRemotes()
1055 {
1056   vector<ComboAddress>* ret = new vector<ComboAddress>();
1057   if(!t_servfailremotes)
1058     return ret;
1059   ret->reserve(t_servfailremotes->size());
1060   for(const ComboAddress& ca :  *t_servfailremotes) {
1061     ret->push_back(ca);
1062   }
1063   return ret;
1064 }
1065
1066 vector<ComboAddress>* pleaseGetLargeAnswerRemotes()
1067 {
1068   vector<ComboAddress>* ret = new vector<ComboAddress>();
1069   if(!t_largeanswerremotes)
1070     return ret;
1071   ret->reserve(t_largeanswerremotes->size());
1072   for(const ComboAddress& ca :  *t_largeanswerremotes) {
1073     ret->push_back(ca);
1074   }
1075   return ret;
1076 }
1077
1078 string doGenericTopRemotes(pleaseremotefunc_t func)
1079 {
1080   typedef map<ComboAddress, int, ComboAddress::addressOnlyLessThan> counts_t;
1081   counts_t counts;
1082
1083   vector<ComboAddress> remotes=broadcastAccFunction<vector<ComboAddress> >(func);
1084
1085   unsigned int total=0;
1086   for(const ComboAddress& ca :  remotes) {
1087     total++;
1088     counts[ca]++;
1089   }
1090
1091   typedef std::multimap<int, ComboAddress> rcounts_t;
1092   rcounts_t rcounts;
1093
1094   for(counts_t::const_iterator i=counts.begin(); i != counts.end(); ++i)
1095     rcounts.insert(make_pair(-i->second, i->first));
1096
1097   ostringstream ret;
1098   ret<<"Over last "<<total<<" entries:\n";
1099   format fmt("%.02f%%\t%s\n");
1100   int limit=0, accounted=0;
1101   if(total) {
1102     for(rcounts_t::const_iterator i=rcounts.begin(); i != rcounts.end() && limit < 20; ++i, ++limit) {
1103       ret<< fmt % (-100.0*i->first/total) % i->second.toString();
1104       accounted+= -i->first;
1105     }
1106     ret<< '\n' << fmt % (100.0*(total-accounted)/total) % "rest";
1107   }
1108   return ret.str();
1109 }
1110
1111 namespace {
1112   typedef vector<vector<string> > pubs_t;
1113   pubs_t g_pubs;
1114 }
1115
1116 void sortPublicSuffixList()
1117 {
1118   for(const char** p=g_pubsuffix; *p; ++p) {
1119     string low=toLower(*p);
1120
1121     vector<string> parts;
1122     stringtok(parts, low, ".");
1123     reverse(parts.begin(), parts.end());
1124     g_pubs.push_back(parts);
1125   }
1126   sort(g_pubs.begin(), g_pubs.end());
1127 }
1128
1129 // XXX DNSName Pain - this function should benefit from native DNSName methods
1130 DNSName getRegisteredName(const DNSName& dom)
1131 {
1132   auto parts=dom.getRawLabels();
1133   if(parts.size()<=2)
1134     return dom;
1135   reverse(parts.begin(), parts.end());
1136   for(string& str :  parts) { str=toLower(str); };
1137
1138   // uk co migweb
1139   string last;
1140   while(!parts.empty()) {
1141     if(parts.size()==1 || binary_search(g_pubs.begin(), g_pubs.end(), parts)) {
1142
1143       string ret=last;
1144       if(!ret.empty())
1145         ret+=".";
1146
1147       for(auto p = parts.crbegin(); p != parts.crend(); ++p) {
1148         ret+=(*p)+".";
1149       }
1150       return DNSName(ret);
1151     }
1152
1153     last=parts[parts.size()-1];
1154     parts.resize(parts.size()-1);
1155   }
1156   return DNSName("??");
1157 }
1158
1159 static DNSName nopFilter(const DNSName& name)
1160 {
1161   return name;
1162 }
1163
1164 string doGenericTopQueries(pleasequeryfunc_t func, boost::function<DNSName(const DNSName&)> filter=nopFilter)
1165 {
1166   typedef pair<DNSName,uint16_t> query_t;
1167   typedef map<query_t, int> counts_t;
1168   counts_t counts;
1169   vector<query_t> queries=broadcastAccFunction<vector<query_t> >(func);
1170
1171   unsigned int total=0;
1172   for(const query_t& q :  queries) {
1173     total++;
1174     counts[make_pair(filter(q.first),q.second)]++;
1175   }
1176
1177   typedef std::multimap<int, query_t> rcounts_t;
1178   rcounts_t rcounts;
1179
1180   for(counts_t::const_iterator i=counts.begin(); i != counts.end(); ++i)
1181     rcounts.insert(make_pair(-i->second, i->first));
1182
1183   ostringstream ret;
1184   ret<<"Over last "<<total<<" entries:\n";
1185   format fmt("%.02f%%\t%s\n");
1186   int limit=0, accounted=0;
1187   if(total) {
1188     for(rcounts_t::const_iterator i=rcounts.begin(); i != rcounts.end() && limit < 20; ++i, ++limit) {
1189       ret<< fmt % (-100.0*i->first/total) % (i->second.first.toString()+"|"+DNSRecordContent::NumberToType(i->second.second));
1190       accounted+= -i->first;
1191     }
1192     ret<< '\n' << fmt % (100.0*(total-accounted)/total) % "rest";
1193   }
1194
1195
1196   return ret.str();
1197 }
1198
1199 static string* nopFunction()
1200 {
1201   return new string("pong\n");
1202 }
1203
1204 string RecursorControlParser::getAnswer(const string& question, RecursorControlParser::func_t** command)
1205 {
1206   *command=nop;
1207   vector<string> words;
1208   stringtok(words, question);
1209
1210   if(words.empty())
1211     return "invalid command\n";
1212
1213   string cmd=toLower(words[0]);
1214   vector<string>::const_iterator begin=words.begin()+1, end=words.end();
1215
1216   // should probably have a smart dispatcher here, like auth has
1217   if(cmd=="help")
1218     return
1219 "add-nta DOMAIN [REASON]          add a Negative Trust Anchor for DOMAIN with the comment REASON\n"
1220 "add-ta DOMAIN DSRECORD           add a Trust Anchor for DOMAIN with data DSRECORD\n"
1221 "current-queries                  show currently active queries\n"
1222 "clear-nta [DOMAIN]...            Clear the Negative Trust Anchor for DOMAINs, if no DOMAIN is specified, remove all\n"
1223 "clear-ta [DOMAIN]...             Clear the Trust Anchor for DOMAINs\n"
1224 "dump-cache <filename>            dump cache contents to the named file\n"
1225 "dump-edns [status] <filename>    dump EDNS status to the named file\n"
1226 "dump-nsspeeds <filename>         dump nsspeeds statistics to the named file\n"
1227 "dump-rpz <zone name> <filename>  dump the content of a RPZ zone to the named file\n"
1228 "get [key1] [key2] ..             get specific statistics\n"
1229 "get-all                          get all statistics\n"
1230 "get-ntas                         get all configured Negative Trust Anchors\n"
1231 "get-tas                          get all configured Trust Anchors\n"
1232 "get-parameter [key1] [key2] ..   get configuration parameters\n"
1233 "get-qtypelist                    get QType statistics\n"
1234 "                                 notice: queries from cache aren't being counted yet\n"
1235 "help                             get this list\n"
1236 "ping                             check that all threads are alive\n"
1237 "quit                             stop the recursor daemon\n"
1238 "quit-nicely                      stop the recursor daemon nicely\n"
1239 "reload-acls                      reload ACLS\n"
1240 "reload-lua-script [filename]     (re)load Lua script\n"
1241 "reload-lua-config [filename]     (re)load Lua configuration file\n"
1242 "reload-zones                     reload all auth and forward zones\n"
1243 "set-max-cache-entries value      set new maximum cache size\n"
1244 "set-max-packetcache-entries val  set new maximum packet cache size\n"
1245 "set-minimum-ttl value            set minimum-ttl-override\n"
1246 "set-carbon-server                set a carbon server for telemetry\n"
1247 "set-dnssec-log-bogus SETTING     enable (SETTING=yes) or disable (SETTING=no) logging of DNSSEC validation failures\n"
1248 "trace-regex [regex]              emit resolution trace for matching queries (empty regex to clear trace)\n"
1249 "top-largeanswer-remotes          show top remotes receiving large answers\n"
1250 "top-queries                      show top queries\n"
1251 "top-pub-queries                  show top queries grouped by public suffix list\n"
1252 "top-remotes                      show top remotes\n"
1253 "top-servfail-queries             show top queries receiving servfail answers\n"
1254 "top-pub-servfail-queries         show top queries receiving servfail answers grouped by public suffix list\n"
1255 "top-servfail-remotes             show top remotes receiving servfail answers\n"
1256 "unload-lua-script                unload Lua script\n"
1257 "version                          return Recursor version number\n"
1258 "wipe-cache domain0 [domain1] ..  wipe domain data from cache\n";
1259
1260   if(cmd=="get-all")
1261     return getAllStats();
1262
1263   if(cmd=="get")
1264     return doGet(begin, end);
1265
1266   if(cmd=="get-parameter")
1267     return doGetParameter(begin, end);
1268
1269   if(cmd=="quit") {
1270     *command=&doExit;
1271     return "bye\n";
1272   }
1273
1274   if(cmd=="version") {
1275     return getPDNSVersion()+"\n";
1276   }
1277
1278   if(cmd=="quit-nicely") {
1279     *command=&doExitNicely;
1280     return "bye nicely\n";
1281   }
1282
1283   if(cmd=="dump-cache")
1284     return doDumpCache(begin, end);
1285
1286   if(cmd=="dump-ednsstatus" || cmd=="dump-edns")
1287     return doDumpEDNSStatus(begin, end);
1288
1289   if(cmd=="dump-nsspeeds")
1290     return doDumpNSSpeeds(begin, end);
1291
1292   if(cmd=="dump-rpz") {
1293     return doDumpRPZ(begin, end);
1294   }
1295
1296   if(cmd=="wipe-cache" || cmd=="flushname")
1297     return doWipeCache(begin, end);
1298
1299   if(cmd=="reload-lua-script")
1300     return doQueueReloadLuaScript(begin, end);
1301
1302   if(cmd=="reload-lua-config") {
1303     if(begin != end)
1304       ::arg().set("lua-config-file") = *begin;
1305
1306     try {
1307       loadRecursorLuaConfig(::arg()["lua-config-file"], false);
1308       L<<Logger::Warning<<"Reloaded Lua configuration file '"<<::arg()["lua-config-file"]<<"', requested via control channel"<<endl;
1309       return "Reloaded Lua configuration file '"+::arg()["lua-config-file"]+"'\n";
1310     }
1311     catch(std::exception& e) {
1312       return "Unable to load Lua script from '"+::arg()["lua-config-file"]+"': "+e.what()+"\n";
1313     }
1314     catch(const PDNSException& e) {
1315       return "Unable to load Lua script from '"+::arg()["lua-config-file"]+"': "+e.reason+"\n";
1316     }
1317   }
1318
1319   if(cmd=="set-carbon-server")
1320     return doSetCarbonServer(begin, end);
1321
1322   if(cmd=="trace-regex")
1323     return doTraceRegex(begin, end);
1324
1325   if(cmd=="unload-lua-script") {
1326     vector<string> empty;
1327     empty.push_back(string());
1328     return doQueueReloadLuaScript(empty.begin(), empty.end());
1329   }
1330
1331   if(cmd=="reload-acls") {
1332     if(!::arg()["chroot"].empty()) {
1333       L<<Logger::Error<<"Unable to reload ACL when chroot()'ed, requested via control channel"<<endl;
1334       return "Unable to reload ACL when chroot()'ed, please restart\n";
1335     }
1336
1337     try {
1338       parseACLs();
1339     }
1340     catch(std::exception& e)
1341     {
1342       L<<Logger::Error<<"Reloading ACLs failed (Exception: "<<e.what()<<")"<<endl;
1343       return e.what() + string("\n");
1344     }
1345     catch(PDNSException& ae)
1346     {
1347       L<<Logger::Error<<"Reloading ACLs failed (PDNSException: "<<ae.reason<<")"<<endl;
1348       return ae.reason + string("\n");
1349     }
1350     return "ok\n";
1351   }
1352
1353
1354   if(cmd=="top-remotes")
1355     return doGenericTopRemotes(pleaseGetRemotes);
1356
1357   if(cmd=="top-queries")
1358     return doGenericTopQueries(pleaseGetQueryRing);
1359
1360   if(cmd=="top-pub-queries")
1361     return doGenericTopQueries(pleaseGetQueryRing, getRegisteredName);
1362
1363   if(cmd=="top-servfail-queries")
1364     return doGenericTopQueries(pleaseGetServfailQueryRing);
1365
1366   if(cmd=="top-pub-servfail-queries")
1367     return doGenericTopQueries(pleaseGetServfailQueryRing, getRegisteredName);
1368
1369
1370   if(cmd=="top-servfail-remotes")
1371     return doGenericTopRemotes(pleaseGetServfailRemotes);
1372
1373   if(cmd=="top-largeanswer-remotes")
1374     return doGenericTopRemotes(pleaseGetLargeAnswerRemotes);
1375
1376
1377   if(cmd=="current-queries")
1378     return doCurrentQueries();
1379
1380   if(cmd=="ping") {
1381     return broadcastAccFunction<string>(nopFunction);
1382   }
1383
1384   if(cmd=="reload-zones") {
1385     if(!::arg()["chroot"].empty()) {
1386       L<<Logger::Error<<"Unable to reload zones and forwards when chroot()'ed, requested via control channel"<<endl;
1387       return "Unable to reload zones and forwards when chroot()'ed, please restart\n";
1388     }
1389     return reloadAuthAndForwards();
1390   }
1391
1392   if(cmd=="set-max-cache-entries") {
1393     return setMaxCacheEntries(begin, end);
1394   }
1395   if(cmd=="set-max-packetcache-entries") {
1396     return setMaxPacketCacheEntries(begin, end);
1397   }
1398
1399   if(cmd=="set-minimum-ttl") {
1400     return setMinimumTTL(begin, end);
1401   }
1402
1403   if(cmd=="get-qtypelist") {
1404     return g_rs.getQTypeReport();
1405   }
1406
1407   if(cmd=="add-nta") {
1408     return doAddNTA(begin, end);
1409   }
1410
1411   if(cmd=="clear-nta") {
1412     return doClearNTA(begin, end);
1413   }
1414
1415   if(cmd=="get-ntas") {
1416     return getNTAs();
1417   }
1418
1419   if(cmd=="add-ta") {
1420     return doAddTA(begin, end);
1421   }
1422
1423   if(cmd=="clear-ta") {
1424     return doClearTA(begin, end);
1425   }
1426
1427   if(cmd=="get-tas") {
1428     return getTAs();
1429   }
1430
1431   if (cmd=="set-dnssec-log-bogus")
1432     return doSetDnssecLogBogus(begin, end);
1433
1434   return "Unknown command '"+cmd+"', try 'help'\n";
1435 }