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Commit | Line | Data |
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6ec5e728 | 1 | /* |
6edbf68a PL |
2 | * This file is part of PowerDNS or dnsdist. |
3 | * Copyright -- PowerDNS.COM B.V. and its contributors | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of version 2 of the GNU General Public License as | |
7 | * published by the Free Software Foundation. | |
8 | * | |
9 | * In addition, for the avoidance of any doubt, permission is granted to | |
10 | * link this program with OpenSSL and to (re)distribute the binaries | |
11 | * produced as the result of such linking. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the Free Software | |
20 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. | |
21 | */ | |
870a0fe4 AT |
22 | #ifdef HAVE_CONFIG_H |
23 | #include "config.h" | |
24 | #endif | |
fa8fd4d2 | 25 | |
6ec5e728 | 26 | #include <boost/tokenizer.hpp> |
6ec5e728 CH |
27 | #include "namespaces.hh" |
28 | #include "ws-api.hh" | |
29 | #include "json.hh" | |
6ec5e728 CH |
30 | #include "version.hh" |
31 | #include "arguments.hh" | |
118d3b31 CH |
32 | #include "dnsparser.hh" |
33 | #include "responsestats.hh" | |
2977c6bb | 34 | #ifndef RECURSOR |
118d3b31 | 35 | #include "statbag.hh" |
2977c6bb | 36 | #endif |
6ec5e728 CH |
37 | #include <stdio.h> |
38 | #include <string.h> | |
39 | #include <ctype.h> | |
40 | #include <sys/types.h> | |
3c3c006b | 41 | #include <iomanip> |
6ec5e728 | 42 | |
f461cf07 | 43 | using json11::Json; |
fd99e845 | 44 | |
118d3b31 CH |
45 | extern string s_programname; |
46 | extern ResponseStats g_rs; | |
47 | #ifndef RECURSOR | |
48 | extern StatBag S; | |
49 | #endif | |
50 | ||
6ec5e728 CH |
51 | #ifndef HAVE_STRCASESTR |
52 | ||
53 | /* | |
54 | * strcasestr() locates the first occurrence in the string s1 of the | |
55 | * sequence of characters (excluding the terminating null character) | |
56 | * in the string s2, ignoring case. strcasestr() returns a pointer | |
57 | * to the located string, or a null pointer if the string is not found. | |
58 | * If s2 is empty, the function returns s1. | |
59 | */ | |
60 | ||
61 | static char * | |
62 | strcasestr(const char *s1, const char *s2) | |
63 | { | |
64 | int *cm = __trans_lower; | |
65 | const uchar_t *us1 = (const uchar_t *)s1; | |
66 | const uchar_t *us2 = (const uchar_t *)s2; | |
67 | const uchar_t *tptr; | |
68 | int c; | |
69 | ||
70 | if (us2 == NULL || *us2 == '\0') | |
71 | return ((char *)us1); | |
72 | ||
73 | c = cm[*us2]; | |
74 | while (*us1 != '\0') { | |
75 | if (c == cm[*us1++]) { | |
76 | tptr = us1; | |
77 | while (cm[c = *++us2] == cm[*us1++] && c != '\0') | |
78 | continue; | |
79 | if (c == '\0') | |
80 | return ((char *)tptr - 1); | |
81 | us1 = tptr; | |
82 | us2 = (const uchar_t *)s2; | |
83 | c = cm[*us2]; | |
84 | } | |
85 | } | |
86 | ||
87 | return (NULL); | |
88 | } | |
89 | ||
90 | #endif // HAVE_STRCASESTR | |
91 | ||
f461cf07 CH |
92 | static Json getServerDetail() { |
93 | return Json::object { | |
94 | { "type", "Server" }, | |
95 | { "id", "localhost" }, | |
96 | { "url", "/api/v1/servers/localhost" }, | |
97 | { "daemon_type", productTypeApiType() }, | |
98 | { "version", getPDNSVersion() }, | |
99 | { "config_url", "/api/v1/servers/localhost/config{/config_setting}" }, | |
100 | { "zones_url", "/api/v1/servers/localhost/zones{/zone}" } | |
101 | }; | |
6ec5e728 CH |
102 | } |
103 | ||
9e6d2033 CH |
104 | /* Return information about the supported API versions. |
105 | * The format of this MUST NEVER CHANGE at it's not versioned. | |
106 | */ | |
107 | void apiDiscovery(HttpRequest* req, HttpResponse* resp) { | |
108 | if(req->method != "GET") | |
109 | throw HttpMethodNotAllowedException(); | |
110 | ||
111 | Json version1 = Json::object { | |
112 | { "version", 1 }, | |
113 | { "url", "/api/v1" } | |
114 | }; | |
115 | Json doc = Json::array { version1 }; | |
116 | ||
117 | resp->setBody(doc); | |
118 | } | |
119 | ||
6ec5e728 CH |
120 | void apiServer(HttpRequest* req, HttpResponse* resp) { |
121 | if(req->method != "GET") | |
122 | throw HttpMethodNotAllowedException(); | |
123 | ||
f461cf07 | 124 | Json doc = Json::array {getServerDetail()}; |
669822d0 | 125 | resp->setBody(doc); |
6ec5e728 CH |
126 | } |
127 | ||
128 | void apiServerDetail(HttpRequest* req, HttpResponse* resp) { | |
129 | if(req->method != "GET") | |
130 | throw HttpMethodNotAllowedException(); | |
131 | ||
f461cf07 | 132 | resp->setBody(getServerDetail()); |
6ec5e728 CH |
133 | } |
134 | ||
135 | void apiServerConfig(HttpRequest* req, HttpResponse* resp) { | |
136 | if(req->method != "GET") | |
137 | throw HttpMethodNotAllowedException(); | |
138 | ||
139 | vector<string> items = ::arg().list(); | |
140 | string value; | |
9857fdbc CH |
141 | Json::array doc; |
142 | for(const string& item : items) { | |
4a1dd79d | 143 | if(item.find("password") != string::npos || item.find("api-key") != string::npos) |
6ec5e728 CH |
144 | value = "***"; |
145 | else | |
146 | value = ::arg()[item]; | |
147 | ||
9857fdbc CH |
148 | doc.push_back(Json::object { |
149 | { "type", "ConfigSetting" }, | |
150 | { "name", item }, | |
151 | { "value", value }, | |
152 | }); | |
6ec5e728 | 153 | } |
669822d0 | 154 | resp->setBody(doc); |
6ec5e728 CH |
155 | } |
156 | ||
6ec5e728 CH |
157 | void apiServerStatistics(HttpRequest* req, HttpResponse* resp) { |
158 | if(req->method != "GET") | |
159 | throw HttpMethodNotAllowedException(); | |
160 | ||
5376a5d7 RG |
161 | Json::array doc; |
162 | string name = req->getvars["statistic"]; | |
163 | if (!name.empty()) { | |
164 | auto stat = productServerStatisticsFetch(name); | |
165 | if (!stat) { | |
166 | throw ApiException("Unknown statistic name"); | |
167 | } | |
168 | ||
169 | doc.push_back(Json::object { | |
170 | { "type", "StatisticItem" }, | |
171 | { "name", name }, | |
172 | { "value", std::to_string(*stat) }, | |
173 | }); | |
174 | ||
175 | resp->setBody(doc); | |
176 | ||
177 | return; | |
178 | } | |
179 | ||
118d3b31 CH |
180 | typedef map<string, string> stat_items_t; |
181 | stat_items_t general_stats; | |
182 | productServerStatisticsFetch(general_stats); | |
183 | ||
118d3b31 | 184 | for(const auto& item : general_stats) { |
9aeac747 CH |
185 | doc.push_back(Json::object { |
186 | { "type", "StatisticItem" }, | |
187 | { "name", item.first }, | |
188 | { "value", item.second }, | |
189 | }); | |
6ec5e728 CH |
190 | } |
191 | ||
5376a5d7 RG |
192 | auto resp_qtype_stats = g_rs.getQTypeResponseCounts(); |
193 | auto resp_size_stats = g_rs.getSizeResponseCounts(); | |
194 | auto resp_rcode_stats = g_rs.getRCodeResponseCounts(); | |
118d3b31 CH |
195 | { |
196 | Json::array values; | |
197 | for(const auto& item : resp_qtype_stats) { | |
198 | if (item.second == 0) | |
199 | continue; | |
200 | values.push_back(Json::object { | |
201 | { "name", DNSRecordContent::NumberToType(item.first) }, | |
202 | { "value", std::to_string(item.second) }, | |
203 | }); | |
204 | } | |
205 | ||
206 | doc.push_back(Json::object { | |
207 | { "type", "MapStatisticItem" }, | |
87798d5e | 208 | { "name", "response-by-qtype" }, |
118d3b31 CH |
209 | { "value", values }, |
210 | }); | |
211 | } | |
212 | ||
213 | { | |
214 | Json::array values; | |
215 | for(const auto& item : resp_size_stats) { | |
216 | if (item.second == 0) | |
217 | continue; | |
218 | ||
219 | values.push_back(Json::object { | |
220 | { "name", std::to_string(item.first) }, | |
221 | { "value", std::to_string(item.second) }, | |
222 | }); | |
223 | } | |
224 | ||
225 | doc.push_back(Json::object { | |
226 | { "type", "MapStatisticItem" }, | |
227 | { "name", "response-sizes" }, | |
228 | { "value", values }, | |
229 | }); | |
230 | } | |
231 | ||
87798d5e TB |
232 | { |
233 | Json::array values; | |
234 | for(const auto& item : resp_rcode_stats) { | |
235 | if (item.second == 0) | |
236 | continue; | |
237 | values.push_back(Json::object { | |
238 | { "name", RCode::to_s(item.first) }, | |
239 | { "value", std::to_string(item.second) }, | |
240 | }); | |
241 | } | |
242 | ||
243 | doc.push_back(Json::object { | |
244 | { "type", "MapStatisticItem" }, | |
245 | { "name", "response-by-rcode" }, | |
246 | { "value", values }, | |
247 | }); | |
248 | } | |
249 | ||
118d3b31 CH |
250 | #ifndef RECURSOR |
251 | for(const auto& ringName : S.listRings()) { | |
252 | Json::array values; | |
253 | const auto& ring = S.getRing(ringName); | |
254 | for(const auto& item : ring) { | |
255 | if (item.second == 0) | |
256 | continue; | |
257 | ||
258 | values.push_back(Json::object { | |
259 | { "name", item.first }, | |
260 | { "value", std::to_string(item.second) }, | |
261 | }); | |
262 | } | |
263 | ||
264 | doc.push_back(Json::object { | |
265 | { "type", "RingStatisticItem" }, | |
266 | { "name", ringName }, | |
267 | { "size", std::to_string(S.getRingSize(ringName)) }, | |
268 | { "value", values }, | |
269 | }); | |
270 | } | |
271 | #endif | |
272 | ||
669822d0 | 273 | resp->setBody(doc); |
6ec5e728 | 274 | } |
3c3c006b | 275 | |
c576d0c5 CH |
276 | DNSName apiNameToDNSName(const string& name) { |
277 | if (!isCanonical(name)) { | |
278 | throw ApiException("DNS Name '" + name + "' is not canonical"); | |
279 | } | |
280 | try { | |
281 | return DNSName(name); | |
282 | } catch (...) { | |
283 | throw ApiException("Unable to parse DNS Name '" + name + "'"); | |
284 | } | |
285 | } | |
286 | ||
8171ab83 | 287 | DNSName apiZoneIdToName(const string& id) { |
3c3c006b CH |
288 | string zonename; |
289 | ostringstream ss; | |
290 | ||
291 | if(id.empty()) | |
292 | throw HttpBadRequestException(); | |
293 | ||
294 | std::size_t lastpos = 0, pos = 0; | |
295 | while ((pos = id.find('=', lastpos)) != string::npos) { | |
296 | ss << id.substr(lastpos, pos-lastpos); | |
1dbe38ba CH |
297 | char c; |
298 | // decode tens | |
299 | if (id[pos+1] >= '0' && id[pos+1] <= '9') { | |
300 | c = id[pos+1] - '0'; | |
301 | } else if (id[pos+1] >= 'A' && id[pos+1] <= 'F') { | |
302 | c = id[pos+1] - 'A' + 10; | |
3c3c006b CH |
303 | } else { |
304 | throw HttpBadRequestException(); | |
305 | } | |
808bc955 | 306 | c = c * 16; |
1dbe38ba CH |
307 | |
308 | // decode unit place | |
309 | if (id[pos+2] >= '0' && id[pos+2] <= '9') { | |
310 | c += id[pos+2] - '0'; | |
311 | } else if (id[pos+2] >= 'A' && id[pos+2] <= 'F') { | |
312 | c += id[pos+2] - 'A' + 10; | |
313 | } else { | |
314 | throw HttpBadRequestException(); | |
315 | } | |
316 | ||
317 | ss << c; | |
3c3c006b CH |
318 | |
319 | lastpos = pos+3; | |
320 | } | |
321 | if (lastpos < pos) { | |
322 | ss << id.substr(lastpos, pos-lastpos); | |
323 | } | |
324 | ||
325 | zonename = ss.str(); | |
326 | ||
1d6b70f9 CH |
327 | try { |
328 | return DNSName(zonename); | |
329 | } catch (...) { | |
330 | throw ApiException("Unable to parse DNS Name '" + zonename + "'"); | |
331 | } | |
3c3c006b CH |
332 | } |
333 | ||
8171ab83 | 334 | string apiZoneNameToId(const DNSName& dname) { |
335 | string name=dname.toString(); | |
3c3c006b CH |
336 | ostringstream ss; |
337 | ||
338 | for(string::const_iterator iter = name.begin(); iter != name.end(); ++iter) { | |
339 | if ((*iter >= 'A' && *iter <= 'Z') || | |
340 | (*iter >= 'a' && *iter <= 'z') || | |
341 | (*iter >= '0' && *iter <= '9') || | |
342 | (*iter == '.') || (*iter == '-')) { | |
343 | ss << *iter; | |
344 | } else { | |
1dbe38ba | 345 | ss << (boost::format("=%02X") % (int)(*iter)); |
3c3c006b CH |
346 | } |
347 | } | |
348 | ||
161a8b69 CH |
349 | string id = ss.str(); |
350 | ||
3c3c006b | 351 | // add trailing dot |
406497f5 | 352 | if (id.size() == 0 || id.substr(id.size()-1) != ".") { |
161a8b69 CH |
353 | id += "."; |
354 | } | |
3c3c006b CH |
355 | |
356 | // special handling for the root zone, as a dot on it's own doesn't work | |
357 | // everywhere. | |
358 | if (id == ".") { | |
406497f5 | 359 | id = (boost::format("=%02X") % (int)('.')).str(); |
3c3c006b CH |
360 | } |
361 | return id; | |
362 | } | |
1d6b70f9 | 363 | |
cc015fba AT |
364 | void apiCheckNameAllowedCharacters(const string& name) { |
365 | if (name.find_first_not_of("abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ01234567890_/.-") != std::string::npos) | |
366 | throw ApiException("Name '"+name+"' contains unsupported characters"); | |
1d6b70f9 | 367 | } |
cb9b5901 AT |
368 | |
369 | void apiCheckQNameAllowedCharacters(const string& qname) { | |
370 | if (qname.compare(0, 2, "*.") == 0) apiCheckNameAllowedCharacters(qname.substr(2)); | |
371 | else apiCheckNameAllowedCharacters(qname); | |
372 | } |