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7c673cae FG |
1 | #include "common/ceph_json.h" |
2 | #include "include/utime.h" | |
3 | ||
4 | // for testing DELETE ME | |
5 | #include <fstream> | |
31f18b77 | 6 | #include <include/types.h> |
7c673cae FG |
7 | |
8 | using namespace std; | |
9 | using namespace json_spirit; | |
10 | ||
11 | #define dout_subsys ceph_subsys_rgw | |
12 | ||
13 | JSONObjIter::JSONObjIter() | |
14 | { | |
15 | } | |
16 | ||
17 | JSONObjIter::~JSONObjIter() | |
18 | { | |
19 | } | |
20 | ||
21 | void JSONObjIter::set(const JSONObjIter::map_iter_t &_cur, const JSONObjIter::map_iter_t &_last) | |
22 | { | |
23 | cur = _cur; | |
24 | last = _last; | |
25 | } | |
26 | ||
27 | void JSONObjIter::operator++() | |
28 | { | |
29 | if (cur != last) | |
30 | ++cur; | |
31 | } | |
32 | ||
33 | JSONObj *JSONObjIter::operator*() | |
34 | { | |
35 | return cur->second; | |
36 | } | |
37 | ||
38 | // does not work, FIXME | |
39 | ostream& operator<<(ostream &out, const JSONObj &obj) { | |
40 | out << obj.name << ": " << obj.data_string; | |
41 | return out; | |
42 | } | |
43 | ||
44 | JSONObj::~JSONObj() | |
45 | { | |
46 | multimap<string, JSONObj *>::iterator iter; | |
47 | for (iter = children.begin(); iter != children.end(); ++iter) { | |
48 | JSONObj *obj = iter->second; | |
49 | delete obj; | |
50 | } | |
51 | } | |
52 | ||
53 | ||
54 | void JSONObj::add_child(string el, JSONObj *obj) | |
55 | { | |
56 | children.insert(pair<string, JSONObj *>(el, obj)); | |
57 | } | |
58 | ||
59 | bool JSONObj::get_attr(string name, string& attr) | |
60 | { | |
61 | map<string, string>::iterator iter = attr_map.find(name); | |
62 | if (iter == attr_map.end()) | |
63 | return false; | |
64 | attr = iter->second; | |
65 | return true; | |
66 | } | |
67 | ||
68 | JSONObjIter JSONObj::find(const string& name) | |
69 | { | |
70 | JSONObjIter iter; | |
71 | map<string, JSONObj *>::iterator first; | |
72 | map<string, JSONObj *>::iterator last; | |
73 | first = children.find(name); | |
74 | if (first != children.end()) { | |
75 | last = children.upper_bound(name); | |
76 | iter.set(first, last); | |
77 | } | |
78 | return iter; | |
79 | } | |
80 | ||
81 | JSONObjIter JSONObj::find_first() | |
82 | { | |
83 | JSONObjIter iter; | |
84 | iter.set(children.begin(), children.end()); | |
85 | return iter; | |
86 | } | |
87 | ||
88 | JSONObjIter JSONObj::find_first(const string& name) | |
89 | { | |
90 | JSONObjIter iter; | |
91 | map<string, JSONObj *>::iterator first; | |
92 | first = children.find(name); | |
93 | iter.set(first, children.end()); | |
94 | return iter; | |
95 | } | |
96 | ||
97 | JSONObj *JSONObj::find_obj(const string& name) | |
98 | { | |
99 | JSONObjIter iter = find(name); | |
100 | if (iter.end()) | |
101 | return NULL; | |
102 | ||
103 | return *iter; | |
104 | } | |
105 | ||
106 | bool JSONObj::get_data(const string& key, string *dest) | |
107 | { | |
108 | JSONObj *obj = find_obj(key); | |
109 | if (!obj) | |
110 | return false; | |
111 | ||
112 | *dest = obj->get_data(); | |
113 | ||
114 | return true; | |
115 | } | |
116 | ||
117 | /* accepts a JSON Array or JSON Object contained in | |
118 | * a JSON Spirit Value, v, and creates a JSONObj for each | |
119 | * child contained in v | |
120 | */ | |
121 | void JSONObj::handle_value(Value v) | |
122 | { | |
123 | if (v.type() == obj_type) { | |
124 | Object temp_obj = v.get_obj(); | |
125 | for (Object::size_type i = 0; i < temp_obj.size(); i++) { | |
126 | Pair temp_pair = temp_obj[i]; | |
127 | string temp_name = temp_pair.name_; | |
128 | Value temp_value = temp_pair.value_; | |
129 | JSONObj *child = new JSONObj; | |
130 | child->init(this, temp_value, temp_name); | |
131 | add_child(temp_name, child); | |
132 | } | |
133 | } else if (v.type() == array_type) { | |
134 | Array temp_array = v.get_array(); | |
135 | Value value; | |
136 | ||
137 | for (unsigned j = 0; j < temp_array.size(); j++) { | |
138 | Value cur = temp_array[j]; | |
139 | string temp_name; | |
140 | ||
141 | JSONObj *child = new JSONObj; | |
142 | child->init(this, cur, temp_name); | |
143 | add_child(child->get_name(), child); | |
144 | } | |
145 | } | |
146 | } | |
147 | ||
148 | void JSONObj::init(JSONObj *p, Value v, string n) | |
149 | { | |
150 | name = n; | |
151 | parent = p; | |
152 | data = v; | |
153 | ||
154 | handle_value(v); | |
155 | if (v.type() == str_type) | |
156 | data_string = v.get_str(); | |
157 | else | |
158 | data_string = write(v, raw_utf8); | |
159 | attr_map.insert(pair<string,string>(name, data_string)); | |
160 | } | |
161 | ||
162 | JSONObj *JSONObj::get_parent() | |
163 | { | |
164 | return parent; | |
165 | } | |
166 | ||
167 | bool JSONObj::is_object() | |
168 | { | |
169 | return (data.type() == obj_type); | |
170 | } | |
171 | ||
172 | bool JSONObj::is_array() | |
173 | { | |
174 | return (data.type() == array_type); | |
175 | } | |
176 | ||
177 | vector<string> JSONObj::get_array_elements() | |
178 | { | |
179 | vector<string> elements; | |
180 | Array temp_array; | |
181 | ||
182 | if (data.type() == array_type) | |
183 | temp_array = data.get_array(); | |
184 | ||
185 | int array_size = temp_array.size(); | |
186 | if (array_size > 0) | |
187 | for (int i = 0; i < array_size; i++) { | |
188 | Value temp_value = temp_array[i]; | |
189 | string temp_string; | |
190 | temp_string = write(temp_value, raw_utf8); | |
191 | elements.push_back(temp_string); | |
192 | } | |
193 | ||
194 | return elements; | |
195 | } | |
196 | ||
197 | JSONParser::JSONParser() : buf_len(0), success(true) | |
198 | { | |
199 | } | |
200 | ||
201 | JSONParser::~JSONParser() | |
202 | { | |
203 | } | |
204 | ||
205 | ||
206 | ||
207 | void JSONParser::handle_data(const char *s, int len) | |
208 | { | |
209 | json_buffer.append(s, len); // check for problems with null termination FIXME | |
210 | buf_len += len; | |
211 | } | |
212 | ||
213 | // parse a supplied JSON fragment | |
214 | bool JSONParser::parse(const char *buf_, int len) | |
215 | { | |
216 | if (!buf_) { | |
217 | set_failure(); | |
218 | return false; | |
219 | } | |
220 | ||
221 | string json_string(buf_, len); | |
222 | success = read(json_string, data); | |
223 | if (success) | |
224 | handle_value(data); | |
225 | else | |
226 | set_failure(); | |
227 | ||
228 | return success; | |
229 | } | |
230 | ||
231 | // parse the internal json_buffer up to len | |
232 | bool JSONParser::parse(int len) | |
233 | { | |
234 | string json_string = json_buffer.substr(0, len); | |
235 | success = read(json_string, data); | |
236 | if (success) | |
237 | handle_value(data); | |
238 | else | |
239 | set_failure(); | |
240 | ||
241 | return success; | |
242 | } | |
243 | ||
244 | // parse the complete internal json_buffer | |
245 | bool JSONParser::parse() | |
246 | { | |
247 | success = read(json_buffer, data); | |
248 | if (success) | |
249 | handle_value(data); | |
250 | else | |
251 | set_failure(); | |
252 | ||
253 | return success; | |
254 | } | |
255 | ||
256 | // parse a supplied ifstream, for testing. DELETE ME | |
257 | bool JSONParser::parse(const char *file_name) | |
258 | { | |
259 | ifstream is(file_name); | |
260 | success = read(is, data); | |
261 | if (success) | |
262 | handle_value(data); | |
263 | else | |
264 | set_failure(); | |
265 | ||
266 | return success; | |
267 | } | |
268 | ||
269 | ||
270 | void decode_json_obj(long& val, JSONObj *obj) | |
271 | { | |
272 | string s = obj->get_data(); | |
273 | const char *start = s.c_str(); | |
274 | char *p; | |
275 | ||
276 | errno = 0; | |
277 | val = strtol(start, &p, 10); | |
278 | ||
279 | /* Check for various possible errors */ | |
280 | ||
281 | if ((errno == ERANGE && (val == LONG_MAX || val == LONG_MIN)) || | |
282 | (errno != 0 && val == 0)) { | |
283 | throw JSONDecoder::err("failed to parse number"); | |
284 | } | |
285 | ||
286 | if (p == start) { | |
287 | throw JSONDecoder::err("failed to parse number"); | |
288 | } | |
289 | ||
290 | while (*p != '\0') { | |
291 | if (!isspace(*p)) { | |
292 | throw JSONDecoder::err("failed to parse number"); | |
293 | } | |
294 | p++; | |
295 | } | |
296 | } | |
297 | ||
298 | void decode_json_obj(unsigned long& val, JSONObj *obj) | |
299 | { | |
300 | string s = obj->get_data(); | |
301 | const char *start = s.c_str(); | |
302 | char *p; | |
303 | ||
304 | errno = 0; | |
305 | val = strtoul(start, &p, 10); | |
306 | ||
307 | /* Check for various possible errors */ | |
308 | ||
309 | if ((errno == ERANGE && val == ULONG_MAX) || | |
310 | (errno != 0 && val == 0)) { | |
311 | throw JSONDecoder::err("failed to number"); | |
312 | } | |
313 | ||
314 | if (p == start) { | |
315 | throw JSONDecoder::err("failed to parse number"); | |
316 | } | |
317 | ||
318 | while (*p != '\0') { | |
319 | if (!isspace(*p)) { | |
320 | throw JSONDecoder::err("failed to parse number"); | |
321 | } | |
322 | p++; | |
323 | } | |
324 | } | |
325 | ||
326 | void decode_json_obj(long long& val, JSONObj *obj) | |
327 | { | |
328 | string s = obj->get_data(); | |
329 | const char *start = s.c_str(); | |
330 | char *p; | |
331 | ||
332 | errno = 0; | |
333 | val = strtoll(start, &p, 10); | |
334 | ||
335 | /* Check for various possible errors */ | |
336 | ||
337 | if ((errno == ERANGE && (val == LLONG_MAX || val == LLONG_MIN)) || | |
338 | (errno != 0 && val == 0)) { | |
339 | throw JSONDecoder::err("failed to parse number"); | |
340 | } | |
341 | ||
342 | if (p == start) { | |
343 | throw JSONDecoder::err("failed to parse number"); | |
344 | } | |
345 | ||
346 | while (*p != '\0') { | |
347 | if (!isspace(*p)) { | |
348 | throw JSONDecoder::err("failed to parse number"); | |
349 | } | |
350 | p++; | |
351 | } | |
352 | } | |
353 | ||
354 | void decode_json_obj(unsigned long long& val, JSONObj *obj) | |
355 | { | |
356 | string s = obj->get_data(); | |
357 | const char *start = s.c_str(); | |
358 | char *p; | |
359 | ||
360 | errno = 0; | |
361 | val = strtoull(start, &p, 10); | |
362 | ||
363 | /* Check for various possible errors */ | |
364 | ||
365 | if ((errno == ERANGE && val == ULLONG_MAX) || | |
366 | (errno != 0 && val == 0)) { | |
367 | throw JSONDecoder::err("failed to number"); | |
368 | } | |
369 | ||
370 | if (p == start) { | |
371 | throw JSONDecoder::err("failed to parse number"); | |
372 | } | |
373 | ||
374 | while (*p != '\0') { | |
375 | if (!isspace(*p)) { | |
376 | throw JSONDecoder::err("failed to parse number"); | |
377 | } | |
378 | p++; | |
379 | } | |
380 | } | |
381 | ||
382 | void decode_json_obj(int& val, JSONObj *obj) | |
383 | { | |
384 | long l; | |
385 | decode_json_obj(l, obj); | |
386 | #if LONG_MAX > INT_MAX | |
387 | if (l > INT_MAX || l < INT_MIN) { | |
388 | throw JSONDecoder::err("integer out of range"); | |
389 | } | |
390 | #endif | |
391 | ||
392 | val = (int)l; | |
393 | } | |
394 | ||
395 | void decode_json_obj(unsigned& val, JSONObj *obj) | |
396 | { | |
397 | unsigned long l; | |
398 | decode_json_obj(l, obj); | |
399 | #if ULONG_MAX > UINT_MAX | |
400 | if (l > UINT_MAX) { | |
401 | throw JSONDecoder::err("unsigned integer out of range"); | |
402 | } | |
403 | #endif | |
404 | ||
405 | val = (unsigned)l; | |
406 | } | |
407 | ||
408 | void decode_json_obj(bool& val, JSONObj *obj) | |
409 | { | |
410 | string s = obj->get_data(); | |
411 | if (strcasecmp(s.c_str(), "true") == 0) { | |
412 | val = true; | |
413 | return; | |
414 | } | |
415 | if (strcasecmp(s.c_str(), "false") == 0) { | |
416 | val = false; | |
417 | return; | |
418 | } | |
419 | int i; | |
420 | decode_json_obj(i, obj); | |
421 | val = (bool)i; | |
422 | } | |
423 | ||
424 | void decode_json_obj(bufferlist& val, JSONObj *obj) | |
425 | { | |
426 | string s = obj->get_data(); | |
427 | ||
428 | bufferlist bl; | |
429 | bl.append(s.c_str(), s.size()); | |
430 | try { | |
431 | val.decode_base64(bl); | |
432 | } catch (buffer::error& err) { | |
433 | throw JSONDecoder::err("failed to decode base64"); | |
434 | } | |
435 | } | |
436 | ||
437 | void decode_json_obj(utime_t& val, JSONObj *obj) | |
438 | { | |
439 | string s = obj->get_data(); | |
440 | uint64_t epoch; | |
441 | uint64_t nsec; | |
442 | int r = utime_t::parse_date(s, &epoch, &nsec); | |
443 | if (r == 0) { | |
444 | val = utime_t(epoch, nsec); | |
445 | } else { | |
446 | throw JSONDecoder::err("failed to decode utime_t"); | |
447 | } | |
448 | } | |
449 | ||
450 | void encode_json(const char *name, const string& val, Formatter *f) | |
451 | { | |
452 | f->dump_string(name, val); | |
453 | } | |
454 | ||
455 | void encode_json(const char *name, const char *val, Formatter *f) | |
456 | { | |
457 | f->dump_string(name, val); | |
458 | } | |
459 | ||
460 | void encode_json(const char *name, bool val, Formatter *f) | |
461 | { | |
462 | string s; | |
463 | if (val) | |
464 | s = "true"; | |
465 | else | |
466 | s = "false"; | |
467 | ||
468 | f->dump_string(name, s); | |
469 | } | |
470 | ||
471 | void encode_json(const char *name, int val, Formatter *f) | |
472 | { | |
473 | f->dump_int(name, val); | |
474 | } | |
475 | ||
476 | void encode_json(const char *name, long val, Formatter *f) | |
477 | { | |
478 | f->dump_int(name, val); | |
479 | } | |
480 | ||
481 | void encode_json(const char *name, unsigned val, Formatter *f) | |
482 | { | |
483 | f->dump_unsigned(name, val); | |
484 | } | |
485 | ||
486 | void encode_json(const char *name, unsigned long val, Formatter *f) | |
487 | { | |
488 | f->dump_unsigned(name, val); | |
489 | } | |
490 | ||
491 | void encode_json(const char *name, unsigned long long val, Formatter *f) | |
492 | { | |
493 | f->dump_unsigned(name, val); | |
494 | } | |
495 | ||
496 | void encode_json(const char *name, long long val, Formatter *f) | |
497 | { | |
498 | f->dump_int(name, val); | |
499 | } | |
500 | ||
501 | void encode_json(const char *name, const utime_t& val, Formatter *f) | |
502 | { | |
503 | val.gmtime(f->dump_stream(name)); | |
504 | } | |
505 | ||
506 | void encode_json(const char *name, const bufferlist& bl, Formatter *f) | |
507 | { | |
508 | /* need to copy data from bl, as it is const bufferlist */ | |
509 | bufferlist src = bl; | |
510 | ||
511 | bufferlist b64; | |
512 | src.encode_base64(b64); | |
513 | ||
514 | string s(b64.c_str(), b64.length()); | |
515 | ||
516 | encode_json(name, s, f); | |
517 | } | |
518 |