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df111b53 | 1 | #include "dnsdist.hh" |
0940e4eb | 2 | #include "dnsrulactions.hh" |
df111b53 | 3 | #include <thread> |
4 | #include "dolog.hh" | |
5 | #include "sodcrypto.hh" | |
6 | #include "base64.hh" | |
7 | #include <fstream> | |
8 | ||
9 | using std::thread; | |
10 | ||
2e72cc0e | 11 | static vector<std::function<void(void)>>* g_launchWork; |
12 | ||
d8d85a30 | 13 | class LuaAction : public DNSAction |
14 | { | |
15 | public: | |
16 | typedef std::function<std::tuple<int, string>(const ComboAddress& remote, const DNSName& qname, uint16_t qtype, dnsheader* dh, int len)> func_t; | |
17 | LuaAction(LuaAction::func_t func) : d_func(func) | |
18 | {} | |
19 | ||
20 | Action operator()(const ComboAddress& remote, const DNSName& qname, uint16_t qtype, dnsheader* dh, int len, string* ruleresult) const | |
21 | { | |
22 | auto ret = d_func(remote, qname, qtype, dh, len); | |
23 | if(ruleresult) | |
24 | *ruleresult=std::get<1>(ret); | |
25 | return (Action)std::get<0>(ret); | |
26 | } | |
27 | ||
28 | string toString() const | |
29 | { | |
30 | return "Lua script"; | |
31 | } | |
32 | ||
33 | private: | |
34 | func_t d_func; | |
35 | }; | |
36 | ||
6bba426c | 37 | typedef boost::variant<string,vector<pair<int, string>>, std::shared_ptr<DNSRule> > luadnsrule_t; |
38 | std::shared_ptr<DNSRule> makeRule(const luadnsrule_t& var) | |
d8d85a30 | 39 | { |
6bba426c | 40 | if(auto src = boost::get<std::shared_ptr<DNSRule>>(&var)) |
41 | return *src; | |
42 | ||
d8d85a30 | 43 | SuffixMatchNode smn; |
44 | NetmaskGroup nmg; | |
6bba426c | 45 | |
d8d85a30 | 46 | auto add=[&](string src) { |
47 | try { | |
5ad8b87a | 48 | nmg.addMask(src); // need to try mask first, all masks are domain names! |
d8d85a30 | 49 | } catch(...) { |
5ad8b87a | 50 | smn.add(DNSName(src)); |
d8d85a30 | 51 | } |
52 | }; | |
53 | if(auto src = boost::get<string>(&var)) | |
54 | add(*src); | |
55 | else { | |
56 | for(auto& a : boost::get<vector<pair<int, string>>>(var)) { | |
57 | add(a.second); | |
58 | } | |
59 | } | |
60 | if(nmg.empty()) | |
61 | return std::make_shared<SuffixMatchNodeRule>(smn); | |
62 | else | |
63 | return std::make_shared<NetmaskGroupRule>(nmg); | |
64 | } | |
65 | ||
839f3021 | 66 | vector<std::function<void(void)>> setupLua(bool client, const std::string& config) |
df111b53 | 67 | { |
2e72cc0e | 68 | g_launchWork= new vector<std::function<void(void)>>(); |
839f3021 | 69 | typedef std::unordered_map<std::string, boost::variant<std::string, vector<pair<int, std::string> > > > newserver_t; |
e48090d1 | 70 | |
d8d85a30 | 71 | g_lua.writeVariable("DNSAction", std::unordered_map<string,int>{ |
72 | {"Drop", (int)DNSAction::Action::Drop}, | |
73 | {"Nxdomain", (int)DNSAction::Action::Nxdomain}, | |
74 | {"Spoof", (int)DNSAction::Action::Spoof}, | |
75 | {"Allow", (int)DNSAction::Action::Allow}, | |
76 | {"HeaderModify", (int)DNSAction::Action::HeaderModify}, | |
77 | {"Pool", (int)DNSAction::Action::Pool}, | |
78 | {"None",(int)DNSAction::Action::Pool}} | |
79 | ); | |
80 | ||
81 | ||
df111b53 | 82 | g_lua.writeFunction("newServer", |
839f3021 | 83 | [client](boost::variant<string,newserver_t> pvars, boost::optional<int> qps) |
df111b53 | 84 | { |
2e72cc0e | 85 | if(client) { |
b4fd86c3 | 86 | return std::make_shared<DownstreamState>(ComboAddress()); |
2e72cc0e | 87 | } |
df111b53 | 88 | if(auto address = boost::get<string>(&pvars)) { |
cbbd1533 | 89 | std::shared_ptr<DownstreamState> ret; |
90 | try { | |
91 | ret=std::make_shared<DownstreamState>(ComboAddress(*address, 53)); | |
92 | } | |
93 | catch(std::exception& e) { | |
94 | g_outputBuffer="Error creating new server: "+string(e.what()); | |
95 | errlog("Error creating new server with address %s: %s", *address, e.what()); | |
96 | return ret; | |
97 | } | |
2e72cc0e | 98 | |
df111b53 | 99 | if(qps) { |
100 | ret->qps=QPSLimiter(*qps, *qps); | |
101 | } | |
ecbe9133 | 102 | g_dstates.modify([ret](servers_t& servers) { |
103 | servers.push_back(ret); | |
104 | std::stable_sort(servers.begin(), servers.end(), [](const decltype(ret)& a, const decltype(ret)& b) { | |
105 | return a->order < b->order; | |
106 | }); | |
107 | ||
108 | }); | |
2e72cc0e | 109 | |
110 | if(g_launchWork) { | |
111 | g_launchWork->push_back([ret]() { | |
112 | ret->tid = move(thread(responderThread, ret)); | |
113 | }); | |
114 | } | |
115 | else { | |
116 | ret->tid = move(thread(responderThread, ret)); | |
117 | } | |
118 | ||
df111b53 | 119 | return ret; |
120 | } | |
839f3021 | 121 | auto vars=boost::get<newserver_t>(pvars); |
cbbd1533 | 122 | std::shared_ptr<DownstreamState> ret; |
123 | try { | |
124 | ret=std::make_shared<DownstreamState>(ComboAddress(boost::get<string>(vars["address"]), 53)); | |
125 | } | |
126 | catch(std::exception& e) { | |
127 | g_outputBuffer="Error creating new server: "+string(e.what()); | |
128 | errlog("Error creating new server with address %s: %s", boost::get<string>(vars["address"]), e.what()); | |
129 | return ret; | |
130 | } | |
2e72cc0e | 131 | |
df111b53 | 132 | if(vars.count("qps")) { |
839f3021 | 133 | int qps=boost::lexical_cast<int>(boost::get<string>(vars["qps"])); |
134 | ret->qps=QPSLimiter(qps, qps); | |
df111b53 | 135 | } |
136 | ||
137 | if(vars.count("pool")) { | |
839f3021 | 138 | if(auto* pool = boost::get<string>(&vars["pool"])) |
139 | ret->pools.insert(*pool); | |
140 | else { | |
141 | auto* pools = boost::get<vector<pair<int, string> > >(&vars["pool"]); | |
142 | for(auto& p : *pools) | |
143 | ret->pools.insert(p.second); | |
144 | } | |
df111b53 | 145 | } |
146 | ||
147 | if(vars.count("order")) { | |
839f3021 | 148 | ret->order=boost::lexical_cast<int>(boost::get<string>(vars["order"])); |
df111b53 | 149 | } |
150 | ||
151 | if(vars.count("weight")) { | |
839f3021 | 152 | ret->weight=boost::lexical_cast<int>(boost::get<string>(vars["weight"])); |
df111b53 | 153 | } |
154 | ||
2e72cc0e | 155 | if(g_launchWork) { |
156 | g_launchWork->push_back([ret]() { | |
157 | ret->tid = move(thread(responderThread, ret)); | |
158 | }); | |
159 | } | |
160 | else { | |
161 | ret->tid = move(thread(responderThread, ret)); | |
162 | } | |
df111b53 | 163 | |
ecbe9133 | 164 | auto states = g_dstates.getCopy(); |
e5a14b2b | 165 | states.push_back(ret); |
166 | std::stable_sort(states.begin(), states.end(), [](const decltype(ret)& a, const decltype(ret)& b) { | |
df111b53 | 167 | return a->order < b->order; |
168 | }); | |
ecbe9133 | 169 | g_dstates.setState(states); |
df111b53 | 170 | return ret; |
171 | } ); | |
172 | ||
d8d85a30 | 173 | |
0940e4eb | 174 | g_lua.writeFunction("addAnyTCRule", []() { |
175 | auto rules=g_rulactions.getCopy(); | |
176 | rules.push_back({ std::make_shared<QTypeRule>(0xff), std::make_shared<TCAction>()}); | |
177 | g_rulactions.setState(rules); | |
178 | }); | |
df111b53 | 179 | |
0940e4eb | 180 | g_lua.writeFunction("rmRule", [](unsigned int num) { |
181 | auto rules = g_rulactions.getCopy(); | |
182 | if(num >= rules.size()) { | |
183 | g_outputBuffer = "Error: attempt to delete non-existing rule\n"; | |
184 | return; | |
185 | } | |
186 | rules.erase(rules.begin()+num); | |
187 | g_rulactions.setState(rules); | |
188 | }); | |
189 | ||
b4fd86c3 | 190 | g_lua.writeFunction("topRule", []() { |
191 | auto rules = g_rulactions.getCopy(); | |
192 | if(rules.empty()) | |
193 | return; | |
194 | auto subject = *rules.rbegin(); | |
195 | rules.erase(std::prev(rules.end())); | |
196 | rules.insert(rules.begin(), subject); | |
197 | g_rulactions.setState(rules); | |
198 | }); | |
0940e4eb | 199 | g_lua.writeFunction("mvRule", [](unsigned int from, unsigned int to) { |
200 | auto rules = g_rulactions.getCopy(); | |
201 | if(from >= rules.size() || to > rules.size()) { | |
202 | g_outputBuffer = "Error: attempt to move rules from/to invalid index\n"; | |
203 | return; | |
204 | } | |
0940e4eb | 205 | |
206 | auto subject = rules[from]; | |
207 | rules.erase(rules.begin()+from); | |
208 | if(to == rules.size()) | |
209 | rules.push_back(subject); | |
210 | else { | |
211 | if(from < to) | |
212 | --to; | |
213 | rules.insert(rules.begin()+to, subject); | |
214 | } | |
215 | g_rulactions.setState(rules); | |
216 | }); | |
df111b53 | 217 | |
218 | ||
219 | g_lua.writeFunction("rmServer", | |
220 | [](boost::variant<std::shared_ptr<DownstreamState>, int> var) | |
221 | { | |
ecbe9133 | 222 | auto states = g_dstates.getCopy(); |
df111b53 | 223 | if(auto* rem = boost::get<shared_ptr<DownstreamState>>(&var)) |
e5a14b2b | 224 | states.erase(remove(states.begin(), states.end(), *rem), states.end()); |
df111b53 | 225 | else |
e5a14b2b | 226 | states.erase(states.begin() + boost::get<int>(var)); |
ecbe9133 | 227 | g_dstates.setState(states); |
df111b53 | 228 | } ); |
229 | ||
230 | ||
231 | g_lua.writeFunction("setServerPolicy", [](ServerPolicy policy) { | |
e5a14b2b | 232 | g_policy.setState(policy); |
df111b53 | 233 | }); |
df111b53 | 234 | g_lua.writeFunction("setServerPolicyLua", [](string name, policy_t policy) { |
e5a14b2b | 235 | g_policy.setState(ServerPolicy{name, policy}); |
df111b53 | 236 | }); |
237 | ||
238 | g_lua.writeFunction("showServerPolicy", []() { | |
ecbe9133 | 239 | g_outputBuffer=g_policy.getLocal()->name+"\n"; |
df111b53 | 240 | }); |
241 | ||
6ad8b29a | 242 | g_lua.writeFunction("truncateTC", [](bool tc) { g_truncateTC=tc; }); |
df111b53 | 243 | |
244 | g_lua.registerMember("name", &ServerPolicy::name); | |
245 | g_lua.registerMember("policy", &ServerPolicy::policy); | |
246 | g_lua.writeFunction("newServerPolicy", [](string name, policy_t policy) { return ServerPolicy{name, policy};}); | |
247 | g_lua.writeVariable("firstAvailable", ServerPolicy{"firstAvailable", firstAvailable}); | |
248 | g_lua.writeVariable("roundrobin", ServerPolicy{"roundrobin", roundrobin}); | |
249 | g_lua.writeVariable("wrandom", ServerPolicy{"wrandom", wrandom}); | |
250 | g_lua.writeVariable("leastOutstanding", ServerPolicy{"leastOutstanding", leastOutstanding}); | |
251 | g_lua.writeFunction("addACL", [](const std::string& domain) { | |
e5a14b2b | 252 | g_ACL.modify([domain](NetmaskGroup& nmg) { nmg.addMask(domain); }); |
df111b53 | 253 | }); |
2e72cc0e | 254 | |
652a7355 | 255 | g_lua.writeFunction("addLocal", [client](const std::string& addr, boost::optional<bool> doTCP) { |
2e72cc0e | 256 | if(client) |
257 | return; | |
258 | try { | |
259 | ComboAddress loc(addr, 53); | |
652a7355 | 260 | g_locals.push_back({loc, doTCP ? *doTCP : true}); /// only works pre-startup, so no sync necessary |
2e72cc0e | 261 | } |
262 | catch(std::exception& e) { | |
263 | g_outputBuffer="Error: "+string(e.what())+"\n"; | |
264 | } | |
265 | }); | |
df111b53 | 266 | g_lua.writeFunction("setACL", [](const vector<pair<int, string>>& parts) { |
e5a14b2b | 267 | NetmaskGroup nmg; |
cffde2fd | 268 | for(const auto& p : parts) { |
e5a14b2b | 269 | nmg.addMask(p.second); |
cffde2fd | 270 | } |
271 | g_ACL.setState(nmg); | |
df111b53 | 272 | }); |
273 | g_lua.writeFunction("showACL", []() { | |
274 | vector<string> vec; | |
cffde2fd | 275 | |
e5a14b2b | 276 | g_ACL.getCopy().toStringVector(&vec); |
cffde2fd | 277 | |
df111b53 | 278 | for(const auto& s : vec) |
cffde2fd | 279 | g_outputBuffer+=s+"\n"; |
280 | ||
df111b53 | 281 | }); |
282 | g_lua.writeFunction("shutdown", []() { _exit(0);} ); | |
283 | ||
284 | ||
ecbe9133 | 285 | g_lua.writeFunction("addDomainBlock", [](const std::string& domain) { |
0940e4eb | 286 | SuffixMatchNode smn; |
1f9100a7 | 287 | smn.add(DNSName(domain)); |
0940e4eb | 288 | g_rulactions.modify([smn](decltype(g_rulactions)::value_type& rulactions) { |
289 | rulactions.push_back({ | |
290 | std::make_shared<SuffixMatchNodeRule>(smn), | |
291 | std::make_shared<DropAction>() }); | |
292 | }); | |
293 | ||
ecbe9133 | 294 | }); |
df111b53 | 295 | g_lua.writeFunction("showServers", []() { |
296 | try { | |
297 | ostringstream ret; | |
298 | ||
299 | boost::format fmt("%1$-3d %2% %|30t|%3$5s %|36t|%4$7.1f %|41t|%5$7d %|44t|%6$3d %|53t|%7$2d %|55t|%8$10d %|61t|%9$7d %|76t|%10$5.1f %|84t|%11$5.1f %12%" ); | |
300 | // 1 2 3 4 5 6 7 8 9 10 11 | |
301 | ret << (fmt % "#" % "Address" % "State" % "Qps" % "Qlim" % "Ord" % "Wt" % "Queries" % "Drops" % "Drate" % "Lat" % "Pools") << endl; | |
302 | ||
303 | uint64_t totQPS{0}, totQueries{0}, totDrops{0}; | |
304 | int counter=0; | |
ecbe9133 | 305 | auto states = g_dstates.getCopy(); |
e5a14b2b | 306 | for(const auto& s : states) { |
df111b53 | 307 | string status; |
308 | if(s->availability == DownstreamState::Availability::Up) | |
309 | status = "UP"; | |
310 | else if(s->availability == DownstreamState::Availability::Down) | |
311 | status = "DOWN"; | |
312 | else | |
313 | status = (s->upStatus ? "up" : "down"); | |
314 | ||
315 | string pools; | |
316 | for(auto& p : s->pools) { | |
317 | if(!pools.empty()) | |
318 | pools+=" "; | |
319 | pools+=p; | |
320 | } | |
321 | ||
322 | ret << (fmt % counter % s->remote.toStringWithPort() % | |
323 | status % | |
324 | s->queryLoad % s->qps.getRate() % s->order % s->weight % s->queries.load() % s->reuseds.load() % (s->dropRate) % (s->latencyUsec/1000.0) % pools) << endl; | |
325 | ||
326 | totQPS += s->queryLoad; | |
327 | totQueries += s->queries.load(); | |
328 | totDrops += s->reuseds.load(); | |
329 | ++counter; | |
330 | } | |
331 | ret<< (fmt % "All" % "" % "" | |
332 | % | |
333 | (double)totQPS % "" % "" % "" % totQueries % totDrops % "" % "" % "" ) << endl; | |
334 | ||
335 | g_outputBuffer=ret.str(); | |
336 | }catch(std::exception& e) { g_outputBuffer=e.what(); throw; } | |
337 | }); | |
338 | ||
6bba426c | 339 | g_lua.writeFunction("addLuaAction", [](luadnsrule_t var, LuaAction::func_t func) |
d8d85a30 | 340 | { |
341 | auto rule=makeRule(var); | |
342 | g_rulactions.modify([rule,func](decltype(g_rulactions)::value_type& rulactions){ | |
343 | rulactions.push_back({rule, | |
344 | std::make_shared<LuaAction>(func)}); | |
345 | }); | |
346 | }); | |
df111b53 | 347 | |
d8d85a30 | 348 | |
6bba426c | 349 | g_lua.writeFunction("NoRecurseAction", []() { |
350 | return std::shared_ptr<DNSAction>(new NoRecurseAction); | |
351 | }); | |
352 | ||
ae3dfa48 | 353 | g_lua.writeFunction("DropAction", []() { |
354 | return std::shared_ptr<DNSAction>(new DropAction); | |
355 | }); | |
356 | ||
2332b03c | 357 | g_lua.writeFunction("TCAction", []() { |
358 | return std::shared_ptr<DNSAction>(new TCAction); | |
359 | }); | |
360 | ||
ae3dfa48 | 361 | |
1b726acf | 362 | g_lua.writeFunction("MaxQPSIPRule", [](unsigned int qps, boost::optional<int> ipv4trunc, boost::optional<int> ipv6trunc) { |
363 | return std::shared_ptr<DNSRule>(new MaxQPSIPRule(qps, ipv4trunc.get_value_or(32), ipv6trunc.get_value_or(64))); | |
6bba426c | 364 | }); |
365 | ||
366 | ||
2332b03c | 367 | g_lua.writeFunction("MaxQPSRule", [](unsigned int qps, boost::optional<int> burst) { |
368 | if(!burst) | |
369 | return std::shared_ptr<DNSRule>(new MaxQPSRule(qps)); | |
370 | else | |
371 | return std::shared_ptr<DNSRule>(new MaxQPSRule(qps, *burst)); | |
372 | }); | |
373 | ||
374 | ||
6bba426c | 375 | g_lua.writeFunction("addAction", [](luadnsrule_t var, std::shared_ptr<DNSAction> ea) |
376 | { | |
377 | auto rule=makeRule(var); | |
378 | g_rulactions.modify([rule, ea](decltype(g_rulactions)::value_type& rulactions){ | |
379 | rulactions.push_back({rule, ea}); | |
380 | }); | |
381 | }); | |
382 | ||
383 | ||
384 | g_lua.writeFunction("addPoolRule", [](luadnsrule_t var, string pool) { | |
d8d85a30 | 385 | auto rule=makeRule(var); |
386 | g_rulactions.modify([rule, pool](decltype(g_rulactions)::value_type& rulactions) { | |
0940e4eb | 387 | rulactions.push_back({ |
d8d85a30 | 388 | rule, |
389 | std::make_shared<PoolAction>(pool) }); | |
ecbe9133 | 390 | }); |
df111b53 | 391 | }); |
0570f37c | 392 | |
6bba426c | 393 | g_lua.writeFunction("addNoRecurseRule", [](luadnsrule_t var) { |
0570f37c | 394 | auto rule=makeRule(var); |
395 | g_rulactions.modify([rule](decltype(g_rulactions)::value_type& rulactions) { | |
396 | rulactions.push_back({ | |
397 | rule, | |
398 | std::make_shared<NoRecurseAction>() }); | |
399 | }); | |
400 | }); | |
401 | ||
402 | ||
6bba426c | 403 | g_lua.writeFunction("addQPSPoolRule", [](luadnsrule_t var, int limit, string pool) { |
d8d85a30 | 404 | auto rule = makeRule(var); |
405 | g_rulactions.modify([rule, pool,limit](decltype(g_rulactions)::value_type& rulactions) { | |
406 | rulactions.push_back({ | |
407 | rule, | |
408 | std::make_shared<QPSPoolAction>(limit, pool) }); | |
409 | }); | |
fd010ca3 | 410 | }); |
df111b53 | 411 | |
520eb5a0 | 412 | g_lua.writeFunction("setDNSSECPool", [](const std::string& pool) { |
413 | g_rulactions.modify([pool](decltype(g_rulactions)::value_type& rulactions) { | |
414 | rulactions.push_back({std::make_shared<DNSSECRule>(), | |
415 | std::make_shared<PoolAction>(pool)}); | |
416 | }); | |
417 | }); | |
df111b53 | 418 | |
6bba426c | 419 | g_lua.writeFunction("addQPSLimit", [](luadnsrule_t var, int lim) { |
d8d85a30 | 420 | auto rule = makeRule(var); |
421 | g_rulactions.modify([lim,rule](decltype(g_rulactions)::value_type& rulactions) { | |
422 | rulactions.push_back({rule, | |
423 | std::make_shared<QPSAction>(lim)}); | |
424 | }); | |
df111b53 | 425 | }); |
d8d85a30 | 426 | |
6bba426c | 427 | g_lua.writeFunction("addDelay", [](luadnsrule_t var, int msec) { |
7b3865cd | 428 | auto rule = makeRule(var); |
429 | g_rulactions.modify([msec,rule](decltype(g_rulactions)::value_type& rulactions) { | |
430 | rulactions.push_back({rule, | |
431 | std::make_shared<DelayAction>(msec)}); | |
432 | }); | |
433 | }); | |
df111b53 | 434 | |
df111b53 | 435 | |
0940e4eb | 436 | g_lua.writeFunction("showRules", []() { |
437 | boost::format fmt("%-3d %9d %-50s %s\n"); | |
438 | g_outputBuffer += (fmt % "#" % "Matches" % "Rule" % "Action").str(); | |
439 | int num=0; | |
440 | for(const auto& lim : g_rulactions.getCopy()) { | |
441 | string name = lim.first->toString(); | |
442 | g_outputBuffer += (fmt % num % lim.first->d_matches % name % lim.second->toString()).str(); | |
df111b53 | 443 | ++num; |
444 | } | |
445 | }); | |
446 | ||
df111b53 | 447 | g_lua.writeFunction("getServers", []() { |
448 | vector<pair<int, std::shared_ptr<DownstreamState> > > ret; | |
449 | int count=1; | |
e5a14b2b | 450 | for(const auto& s : g_dstates.getCopy()) { |
df111b53 | 451 | ret.push_back(make_pair(count++, s)); |
452 | } | |
453 | return ret; | |
454 | }); | |
455 | ||
da4e7813 | 456 | g_lua.writeFunction("getPoolServers", [](string pool) { |
457 | return getDownstreamCandidates(g_dstates.getCopy(), pool); | |
458 | }); | |
459 | ||
e5a14b2b | 460 | g_lua.writeFunction("getServer", [](int i) { return g_dstates.getCopy().at(i); }); |
df111b53 | 461 | |
df111b53 | 462 | g_lua.registerFunction<void(DownstreamState::*)(int)>("setQPS", [](DownstreamState& s, int lim) { s.qps = lim ? QPSLimiter(lim, lim) : QPSLimiter(); }); |
463 | g_lua.registerFunction<void(DownstreamState::*)(string)>("addPool", [](DownstreamState& s, string pool) { s.pools.insert(pool);}); | |
464 | g_lua.registerFunction<void(DownstreamState::*)(string)>("rmPool", [](DownstreamState& s, string pool) { s.pools.erase(pool);}); | |
465 | ||
466 | g_lua.registerFunction<void(DownstreamState::*)()>("getOutstanding", [](const DownstreamState& s) { g_outputBuffer=std::to_string(s.outstanding.load()); }); | |
467 | ||
468 | ||
469 | g_lua.registerFunction("isUp", &DownstreamState::isUp); | |
470 | g_lua.registerFunction("setDown", &DownstreamState::setDown); | |
471 | g_lua.registerFunction("setUp", &DownstreamState::setUp); | |
472 | g_lua.registerFunction("setAuto", &DownstreamState::setAuto); | |
b0976f44 | 473 | g_lua.registerMember("upStatus", &DownstreamState::upStatus); |
df111b53 | 474 | g_lua.registerMember("weight", &DownstreamState::weight); |
475 | g_lua.registerMember("order", &DownstreamState::order); | |
476 | ||
4c6f4321 | 477 | g_lua.writeFunction("infolog", [](const string& arg) { |
478 | infolog("%s", arg); | |
479 | }); | |
480 | g_lua.writeFunction("errlog", [](const string& arg) { | |
481 | errlog("%s", arg); | |
482 | }); | |
483 | g_lua.writeFunction("warnlog", [](const string& arg) { | |
484 | warnlog("%s", arg); | |
485 | }); | |
486 | ||
487 | ||
df111b53 | 488 | g_lua.writeFunction("show", [](const string& arg) { |
489 | g_outputBuffer+=arg; | |
490 | g_outputBuffer+="\n"; | |
491 | }); | |
492 | ||
493 | g_lua.registerFunction<void(dnsheader::*)(bool)>("setRD", [](dnsheader& dh, bool v) { | |
494 | dh.rd=v; | |
495 | }); | |
496 | ||
497 | g_lua.registerFunction<bool(dnsheader::*)()>("getRD", [](dnsheader& dh) { | |
498 | return (bool)dh.rd; | |
499 | }); | |
500 | ||
501 | ||
502 | g_lua.registerFunction<void(dnsheader::*)(bool)>("setTC", [](dnsheader& dh, bool v) { | |
503 | dh.tc=v; | |
bde3ab96 | 504 | if(v) dh.ra = dh.rd; // you'll always need this, otherwise TC=1 gets ignored |
df111b53 | 505 | }); |
506 | ||
507 | g_lua.registerFunction<void(dnsheader::*)(bool)>("setQR", [](dnsheader& dh, bool v) { | |
508 | dh.qr=v; | |
509 | }); | |
510 | ||
df111b53 | 511 | |
512 | g_lua.registerFunction("tostring", &ComboAddress::toString); | |
513 | ||
514 | g_lua.registerFunction("isPartOf", &DNSName::isPartOf); | |
515 | g_lua.registerFunction("tostring", &DNSName::toString); | |
516 | g_lua.writeFunction("newDNSName", [](const std::string& name) { return DNSName(name); }); | |
b0976f44 | 517 | g_lua.writeFunction("newSuffixMatchNode", []() { return SuffixMatchNode(); }); |
df111b53 | 518 | |
519 | g_lua.registerFunction("add",(void (SuffixMatchNode::*)(const DNSName&)) &SuffixMatchNode::add); | |
520 | g_lua.registerFunction("check",(bool (SuffixMatchNode::*)(const DNSName&) const) &SuffixMatchNode::check); | |
521 | ||
42fae326 | 522 | g_lua.writeFunction("carbonServer", [](const std::string& address, boost::optional<string> ourName, |
523 | boost::optional<int> interval) { | |
524 | auto ours = g_carbon.getCopy(); | |
525 | ours.server=ComboAddress(address, 2003); | |
526 | if(ourName) | |
527 | ours.ourname=*ourName; | |
528 | if(interval) | |
529 | ours.interval=*interval; | |
530 | if(!ours.interval) | |
531 | ours.interval=1; | |
532 | g_carbon.setState(ours); | |
533 | }); | |
534 | ||
50bed881 | 535 | g_lua.writeFunction("webserver", [client](const std::string& address, const std::string& password) { |
536 | if(client) | |
537 | return; | |
538 | ComboAddress local(address); | |
539 | try { | |
540 | int sock = socket(local.sin4.sin_family, SOCK_STREAM, 0); | |
541 | SSetsockopt(sock, SOL_SOCKET, SO_REUSEADDR, 1); | |
542 | SBind(sock, local); | |
543 | SListen(sock, 5); | |
544 | auto launch=[sock, local, password]() { | |
545 | thread t(dnsdistWebserverThread, sock, local, password); | |
546 | t.detach(); | |
547 | }; | |
548 | if(g_launchWork) | |
549 | g_launchWork->push_back(launch); | |
550 | else | |
551 | launch(); | |
552 | } | |
553 | catch(std::exception& e) { | |
554 | errlog("Unable to bind to webserver socket on %s: %s", local.toStringWithPort(), e.what()); | |
555 | } | |
556 | ||
557 | }); | |
df111b53 | 558 | g_lua.writeFunction("controlSocket", [client](const std::string& str) { |
559 | ComboAddress local(str, 5199); | |
560 | ||
561 | if(client) { | |
562 | g_serverControl = local; | |
563 | return; | |
564 | } | |
565 | ||
566 | try { | |
567 | int sock = socket(local.sin4.sin_family, SOCK_STREAM, 0); | |
568 | SSetsockopt(sock, SOL_SOCKET, SO_REUSEADDR, 1); | |
569 | SBind(sock, local); | |
570 | SListen(sock, 5); | |
2e72cc0e | 571 | auto launch=[sock, local]() { |
572 | thread t(controlThread, sock, local); | |
573 | t.detach(); | |
574 | }; | |
575 | if(g_launchWork) | |
576 | g_launchWork->push_back(launch); | |
577 | else | |
578 | launch(); | |
579 | ||
df111b53 | 580 | } |
581 | catch(std::exception& e) { | |
582 | errlog("Unable to bind to control socket on %s: %s", local.toStringWithPort(), e.what()); | |
583 | } | |
584 | }); | |
585 | ||
0e5b3cff | 586 | // something needs to be done about this, unlocked will 'mostly' work |
587 | g_lua.writeFunction("topClients", [](unsigned int top) { | |
588 | map<ComboAddress, int,ComboAddress::addressOnlyLessThan > counts; | |
589 | unsigned int total=0; | |
590 | for(const auto& c : g_rings.clientRing) { | |
591 | counts[c]++; | |
592 | total++; | |
593 | } | |
594 | vector<pair<int, ComboAddress>> rcounts; | |
595 | for(const auto& c : counts) | |
596 | rcounts.push_back(make_pair(c.second, c.first)); | |
597 | ||
598 | sort(rcounts.begin(), rcounts.end(), [](const decltype(rcounts)::value_type& a, | |
599 | const decltype(rcounts)::value_type& b) { | |
600 | return b.first < a.first; | |
601 | }); | |
602 | unsigned int count=1, rest=0; | |
603 | boost::format fmt("%4d %-40s %4d %4.1f%%\n"); | |
604 | for(const auto& rc : rcounts) { | |
605 | if(count==top+1) | |
606 | rest+=rc.first; | |
607 | else | |
608 | g_outputBuffer += (fmt % (count++) % rc.second.toString() % rc.first % (100.0*rc.first/total)).str(); | |
609 | } | |
610 | g_outputBuffer += (fmt % (count) % "Rest" % rest % (100.0*rest/total)).str(); | |
611 | }); | |
612 | ||
df111b53 | 613 | g_lua.writeFunction("getTopQueries", [](unsigned int top, boost::optional<int> labels) { |
614 | map<DNSName, int> counts; | |
615 | unsigned int total=0; | |
616 | if(!labels) { | |
617 | for(const auto& a : g_rings.queryRing) { | |
618 | counts[a]++; | |
619 | total++; | |
620 | } | |
621 | } | |
622 | else { | |
623 | unsigned int lab = *labels; | |
624 | for(auto a : g_rings.queryRing) { | |
625 | a.trimToLabels(lab); | |
626 | counts[a]++; | |
627 | total++; | |
628 | } | |
629 | ||
630 | } | |
cffde2fd | 631 | // cout<<"Looked at "<<total<<" queries, "<<counts.size()<<" different ones"<<endl; |
df111b53 | 632 | vector<pair<int, DNSName>> rcounts; |
633 | for(const auto& c : counts) | |
634 | rcounts.push_back(make_pair(c.second, c.first)); | |
635 | ||
636 | sort(rcounts.begin(), rcounts.end(), [](const decltype(rcounts)::value_type& a, | |
637 | const decltype(rcounts)::value_type& b) { | |
638 | return b.first < a.first; | |
639 | }); | |
640 | ||
641 | std::unordered_map<int, vector<boost::variant<string,double>>> ret; | |
642 | unsigned int count=1, rest=0; | |
643 | for(const auto& rc : rcounts) { | |
644 | if(count==top+1) | |
645 | rest+=rc.first; | |
646 | else | |
647 | ret.insert({count++, {rc.second.toString(), rc.first, 100.0*rc.first/total}}); | |
648 | } | |
649 | ret.insert({count, {"Rest", rest, 100.0*rest/total}}); | |
650 | return ret; | |
651 | ||
652 | }); | |
653 | ||
a78a3a0e | 654 | g_lua.executeCode(R"(function topQueries(top, labels) top = top or 10; for k,v in ipairs(getTopQueries(top,labels)) do show(string.format("%4d %-40s %4d %4.1f%%",k,v[1],v[2], v[3])) end end)"); |
df111b53 | 655 | |
520eb5a0 | 656 | |
62edea30 | 657 | |
520eb5a0 | 658 | g_lua.writeFunction("getResponseRing", []() { |
659 | decltype(g_rings.respRing) ring; | |
660 | { | |
661 | std::lock_guard<std::mutex> lock(g_rings.respMutex); | |
662 | ring = g_rings.respRing; | |
663 | } | |
664 | vector<std::unordered_map<string, boost::variant<string, unsigned int> > > ret; | |
665 | ret.reserve(ring.size()); | |
666 | decltype(ret)::value_type item; | |
667 | for(const auto& r : ring) { | |
668 | item["name"]=r.name.toString(); | |
669 | item["qtype"]=r.qtype; | |
670 | item["rcode"]=r.rcode; | |
671 | item["usec"]=r.usec; | |
672 | ret.push_back(item); | |
673 | } | |
674 | return ret; | |
675 | }); | |
f5b58807 | 676 | |
df111b53 | 677 | g_lua.writeFunction("getTopResponses", [](unsigned int top, unsigned int kind, boost::optional<int> labels) { |
678 | map<DNSName, int> counts; | |
679 | unsigned int total=0; | |
680 | { | |
681 | std::lock_guard<std::mutex> lock(g_rings.respMutex); | |
682 | if(!labels) { | |
683 | for(const auto& a : g_rings.respRing) { | |
684 | if(a.rcode!=kind) | |
685 | continue; | |
686 | counts[a.name]++; | |
687 | total++; | |
688 | } | |
689 | } | |
690 | else { | |
691 | unsigned int lab = *labels; | |
692 | for(auto a : g_rings.respRing) { | |
693 | if(a.rcode!=kind) | |
694 | continue; | |
695 | ||
696 | a.name.trimToLabels(lab); | |
697 | counts[a.name]++; | |
698 | total++; | |
699 | } | |
700 | ||
701 | } | |
702 | } | |
703 | // cout<<"Looked at "<<total<<" responses, "<<counts.size()<<" different ones"<<endl; | |
704 | vector<pair<int, DNSName>> rcounts; | |
705 | for(const auto& c : counts) | |
706 | rcounts.push_back(make_pair(c.second, c.first)); | |
707 | ||
708 | sort(rcounts.begin(), rcounts.end(), [](const decltype(rcounts)::value_type& a, | |
709 | const decltype(rcounts)::value_type& b) { | |
710 | return b.first < a.first; | |
711 | }); | |
712 | ||
713 | std::unordered_map<int, vector<boost::variant<string,double>>> ret; | |
714 | unsigned int count=1, rest=0; | |
715 | for(const auto& rc : rcounts) { | |
716 | if(count==top+1) | |
717 | rest+=rc.first; | |
718 | else | |
719 | ret.insert({count++, {rc.second.toString(), rc.first, 100.0*rc.first/total}}); | |
720 | } | |
721 | ret.insert({count, {"Rest", rest, 100.0*rest/total}}); | |
722 | return ret; | |
723 | ||
724 | }); | |
62edea30 | 725 | |
a78a3a0e | 726 | g_lua.executeCode(R"(function topResponses(top, kind, labels) top = top or 10; kind = kind or 0; for k,v in ipairs(getTopResponses(top, kind, labels)) do show(string.format("%4d %-40s %4d %4.1f%%",k,v[1],v[2],v[3])) end end)"); |
df111b53 | 727 | |
728 | ||
729 | g_lua.writeFunction("showResponseLatency", []() { | |
730 | ||
731 | map<double, unsigned int> histo; | |
732 | double bin=100; | |
733 | for(int i=0; i < 15; ++i) { | |
734 | histo[bin]; | |
735 | bin*=2; | |
736 | } | |
737 | ||
738 | double totlat=0; | |
739 | int size=0; | |
740 | { | |
741 | std::lock_guard<std::mutex> lock(g_rings.respMutex); | |
742 | for(const auto& r : g_rings.respRing) { | |
743 | ++size; | |
744 | auto iter = histo.lower_bound(r.usec); | |
745 | if(iter != histo.end()) | |
746 | iter->second++; | |
747 | else | |
748 | histo.rbegin()++; | |
749 | totlat+=r.usec; | |
750 | } | |
751 | } | |
752 | ||
753 | g_outputBuffer = (boost::format("Average response latency: %.02f msec\n") % (0.001*totlat/size)).str(); | |
754 | double highest=0; | |
755 | ||
756 | for(auto iter = histo.cbegin(); iter != histo.cend(); ++iter) { | |
757 | highest=std::max(highest, iter->second*1.0); | |
758 | } | |
759 | boost::format fmt("%7.2f\t%s\n"); | |
760 | g_outputBuffer += (fmt % "msec" % "").str(); | |
761 | ||
762 | for(auto iter = histo.cbegin(); iter != histo.cend(); ++iter) { | |
763 | int stars = (70.0 * iter->second/highest); | |
764 | char c='*'; | |
765 | if(!stars && iter->second) { | |
766 | stars=1; // you get 1 . to show something is there.. | |
767 | if(70.0*iter->second/highest > 0.5) | |
768 | c=':'; | |
769 | else | |
770 | c='.'; | |
771 | } | |
772 | g_outputBuffer += (fmt % (iter->first/1000.0) % string(stars, c)).str(); | |
773 | } | |
774 | }); | |
775 | ||
776 | g_lua.writeFunction("newQPSLimiter", [](int rate, int burst) { return QPSLimiter(rate, burst); }); | |
777 | g_lua.registerFunction("check", &QPSLimiter::check); | |
778 | ||
779 | ||
780 | g_lua.writeFunction("makeKey", []() { | |
781 | g_outputBuffer="setKey("+newKey()+")\n"; | |
782 | }); | |
783 | ||
784 | g_lua.writeFunction("setKey", [](const std::string& key) { | |
845a82c4 | 785 | if(B64Decode(key, g_key) < 0) { |
786 | g_outputBuffer=string("Unable to decode ")+key+" as Base64"; | |
787 | errlog("%s", g_outputBuffer); | |
788 | } | |
df111b53 | 789 | }); |
790 | ||
791 | ||
792 | g_lua.writeFunction("testCrypto", [](string testmsg) | |
793 | { | |
794 | try { | |
795 | SodiumNonce sn, sn2; | |
796 | sn.init(); | |
797 | sn2=sn; | |
798 | string encrypted = sodEncryptSym(testmsg, g_key, sn); | |
799 | string decrypted = sodDecryptSym(encrypted, g_key, sn2); | |
800 | ||
2e72cc0e | 801 | sn.increment(); |
802 | sn2.increment(); | |
803 | ||
804 | encrypted = sodEncryptSym(testmsg, g_key, sn); | |
805 | decrypted = sodDecryptSym(encrypted, g_key, sn2); | |
806 | ||
df111b53 | 807 | if(testmsg == decrypted) |
808 | g_outputBuffer="Everything is ok!\n"; | |
809 | else | |
810 | g_outputBuffer="Crypto failed..\n"; | |
811 | ||
812 | } | |
813 | catch(...) { | |
814 | g_outputBuffer="Crypto failed..\n"; | |
815 | }}); | |
816 | ||
817 | ||
839f3021 | 818 | std::ifstream ifs(config); |
2e72cc0e | 819 | if(!ifs) |
839f3021 | 820 | warnlog("Unable to read configuration from '%s'", config); |
2e72cc0e | 821 | else |
839f3021 | 822 | infolog("Read configuration from '%s'", config); |
df111b53 | 823 | |
824 | g_lua.executeCode(ifs); | |
2e72cc0e | 825 | auto ret=*g_launchWork; |
826 | delete g_launchWork; | |
827 | g_launchWork=0; | |
828 | return ret; | |
df111b53 | 829 | } |