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1 | // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- |
2 | // vim: ts=8 sw=2 smarttab | |
3 | ||
4 | #include <errno.h> | |
5 | #include <vector> | |
6 | #include <algorithm> | |
7 | #include <string> | |
8 | #include <boost/tokenizer.hpp> | |
9 | #include <boost/algorithm/string.hpp> | |
10 | ||
11 | #include "json_spirit/json_spirit.h" | |
12 | #include "common/ceph_json.h" | |
13 | ||
14 | #include "rgw_common.h" | |
15 | #include "rgw_acl.h" | |
16 | #include "rgw_string.h" | |
17 | #include "rgw_rados.h" | |
18 | ||
19 | #include "common/ceph_crypto.h" | |
20 | #include "common/armor.h" | |
21 | #include "common/errno.h" | |
22 | #include "common/Clock.h" | |
23 | #include "common/Formatter.h" | |
24 | #include "common/perf_counters.h" | |
25 | #include "common/strtol.h" | |
26 | #include "include/str_list.h" | |
27 | #include "auth/Crypto.h" | |
28 | #include "rgw_crypt_sanitize.h" | |
29 | ||
30 | #include <sstream> | |
31 | ||
32 | #define dout_context g_ceph_context | |
33 | #define dout_subsys ceph_subsys_rgw | |
34 | ||
35 | #define POLICY_ACTION 0x01 | |
36 | #define POLICY_RESOURCE 0x02 | |
37 | #define POLICY_ARN 0x04 | |
38 | #define POLICY_STRING 0x08 | |
39 | ||
40 | PerfCounters *perfcounter = NULL; | |
41 | ||
42 | const uint32_t RGWBucketInfo::NUM_SHARDS_BLIND_BUCKET(UINT32_MAX); | |
43 | ||
44 | int rgw_perf_start(CephContext *cct) | |
45 | { | |
46 | PerfCountersBuilder plb(cct, cct->_conf->name.to_str(), l_rgw_first, l_rgw_last); | |
47 | ||
48 | plb.add_u64_counter(l_rgw_req, "req", "Requests"); | |
49 | plb.add_u64_counter(l_rgw_failed_req, "failed_req", "Aborted requests"); | |
50 | ||
51 | plb.add_u64_counter(l_rgw_get, "get", "Gets"); | |
52 | plb.add_u64_counter(l_rgw_get_b, "get_b", "Size of gets"); | |
53 | plb.add_time_avg(l_rgw_get_lat, "get_initial_lat", "Get latency"); | |
54 | plb.add_u64_counter(l_rgw_put, "put", "Puts"); | |
55 | plb.add_u64_counter(l_rgw_put_b, "put_b", "Size of puts"); | |
56 | plb.add_time_avg(l_rgw_put_lat, "put_initial_lat", "Put latency"); | |
57 | ||
58 | plb.add_u64(l_rgw_qlen, "qlen", "Queue length"); | |
59 | plb.add_u64(l_rgw_qactive, "qactive", "Active requests queue"); | |
60 | ||
61 | plb.add_u64_counter(l_rgw_cache_hit, "cache_hit", "Cache hits"); | |
62 | plb.add_u64_counter(l_rgw_cache_miss, "cache_miss", "Cache miss"); | |
63 | ||
64 | plb.add_u64_counter(l_rgw_keystone_token_cache_hit, "keystone_token_cache_hit", "Keystone token cache hits"); | |
65 | plb.add_u64_counter(l_rgw_keystone_token_cache_miss, "keystone_token_cache_miss", "Keystone token cache miss"); | |
66 | ||
67 | perfcounter = plb.create_perf_counters(); | |
68 | cct->get_perfcounters_collection()->add(perfcounter); | |
69 | return 0; | |
70 | } | |
71 | ||
72 | void rgw_perf_stop(CephContext *cct) | |
73 | { | |
74 | assert(perfcounter); | |
75 | cct->get_perfcounters_collection()->remove(perfcounter); | |
76 | delete perfcounter; | |
77 | } | |
78 | ||
79 | using namespace ceph::crypto; | |
80 | ||
81 | rgw_err:: | |
82 | rgw_err() | |
83 | { | |
84 | clear(); | |
85 | } | |
86 | ||
87 | rgw_err:: | |
88 | rgw_err(int http, const std::string& s3) | |
89 | : http_ret(http), ret(0), s3_code(s3) | |
90 | { | |
91 | } | |
92 | ||
93 | void rgw_err:: | |
94 | clear() | |
95 | { | |
96 | http_ret = 200; | |
97 | ret = 0; | |
98 | s3_code.clear(); | |
99 | } | |
100 | ||
101 | bool rgw_err:: | |
102 | is_clear() const | |
103 | { | |
104 | return (http_ret == 200); | |
105 | } | |
106 | ||
107 | bool rgw_err:: | |
108 | is_err() const | |
109 | { | |
110 | return !(http_ret >= 200 && http_ret <= 399); | |
111 | } | |
112 | ||
113 | // The requestURI transferred from the frontend can be abs_path or absoluteURI | |
114 | // If it is absoluteURI, we should adjust it to abs_path for the following | |
115 | // S3 authorization and some other processes depending on the requestURI | |
116 | // The absoluteURI can start with "http://", "https://", "ws://" or "wss://" | |
117 | static string get_abs_path(const string& request_uri) { | |
118 | const static string ABS_PREFIXS[] = {"http://", "https://", "ws://", "wss://"}; | |
119 | bool isAbs = false; | |
120 | for (int i = 0; i < 4; ++i) { | |
121 | if (boost::algorithm::starts_with(request_uri, ABS_PREFIXS[i])) { | |
122 | isAbs = true; | |
123 | break; | |
124 | } | |
125 | } | |
126 | if (!isAbs) { // it is not a valid absolute uri | |
127 | return request_uri; | |
128 | } | |
129 | size_t beg_pos = request_uri.find("://") + 3; | |
130 | size_t len = request_uri.size(); | |
131 | beg_pos = request_uri.find('/', beg_pos); | |
132 | if (beg_pos == string::npos) return request_uri; | |
133 | return request_uri.substr(beg_pos, len - beg_pos); | |
134 | } | |
135 | ||
136 | req_info::req_info(CephContext *cct, class RGWEnv *e) : env(e) { | |
137 | method = env->get("REQUEST_METHOD", ""); | |
138 | script_uri = env->get("SCRIPT_URI", cct->_conf->rgw_script_uri.c_str()); | |
139 | request_uri = env->get("REQUEST_URI", cct->_conf->rgw_request_uri.c_str()); | |
140 | if (request_uri[0] != '/') { | |
141 | request_uri = get_abs_path(request_uri); | |
142 | } | |
143 | int pos = request_uri.find('?'); | |
144 | if (pos >= 0) { | |
145 | request_params = request_uri.substr(pos + 1); | |
146 | request_uri = request_uri.substr(0, pos); | |
147 | } else { | |
148 | request_params = env->get("QUERY_STRING", ""); | |
149 | } | |
150 | host = env->get("HTTP_HOST", ""); | |
151 | ||
152 | // strip off any trailing :port from host (added by CrossFTP and maybe others) | |
153 | size_t colon_offset = host.find_last_of(':'); | |
154 | if (colon_offset != string::npos) { | |
155 | bool all_digits = true; | |
156 | for (unsigned i = colon_offset + 1; i < host.size(); ++i) { | |
157 | if (!isdigit(host[i])) { | |
158 | all_digits = false; | |
159 | break; | |
160 | } | |
161 | } | |
162 | if (all_digits) { | |
163 | host.resize(colon_offset); | |
164 | } | |
165 | } | |
166 | } | |
167 | ||
168 | void req_info::rebuild_from(req_info& src) | |
169 | { | |
170 | method = src.method; | |
171 | script_uri = src.script_uri; | |
172 | args = src.args; | |
173 | if (src.effective_uri.empty()) { | |
174 | request_uri = src.request_uri; | |
175 | } else { | |
176 | request_uri = src.effective_uri; | |
177 | } | |
178 | effective_uri.clear(); | |
179 | host = src.host; | |
180 | ||
181 | x_meta_map = src.x_meta_map; | |
182 | x_meta_map.erase("x-amz-date"); | |
183 | } | |
184 | ||
185 | ||
186 | req_state::req_state(CephContext* _cct, RGWEnv* e, RGWUserInfo* u) | |
187 | : cct(_cct), cio(NULL), op(OP_UNKNOWN), user(u), has_acl_header(false), | |
188 | info(_cct, e) | |
189 | { | |
190 | enable_ops_log = e->conf.enable_ops_log; | |
191 | enable_usage_log = e->conf.enable_usage_log; | |
192 | defer_to_bucket_acls = e->conf.defer_to_bucket_acls; | |
193 | content_started = false; | |
194 | format = 0; | |
195 | formatter = NULL; | |
196 | bucket_acl = NULL; | |
197 | object_acl = NULL; | |
198 | expect_cont = false; | |
199 | aws4_auth_needs_complete = false; | |
200 | aws4_auth_streaming_mode = false; | |
201 | ||
202 | header_ended = false; | |
203 | obj_size = 0; | |
204 | prot_flags = 0; | |
205 | ||
206 | system_request = false; | |
207 | ||
208 | time = ceph_clock_now(); | |
209 | perm_mask = 0; | |
210 | bucket_instance_shard_id = -1; | |
211 | content_length = 0; | |
212 | bucket_exists = false; | |
213 | has_bad_meta = false; | |
214 | length = NULL; | |
215 | http_auth = NULL; | |
216 | local_source = false; | |
217 | ||
218 | obj_ctx = NULL; | |
219 | } | |
220 | ||
221 | req_state::~req_state() { | |
222 | delete formatter; | |
223 | delete bucket_acl; | |
224 | delete object_acl; | |
225 | } | |
226 | ||
227 | struct str_len { | |
228 | const char *str; | |
229 | int len; | |
230 | }; | |
231 | ||
232 | #define STR_LEN_ENTRY(s) { s, sizeof(s) - 1 } | |
233 | ||
234 | struct str_len meta_prefixes[] = { STR_LEN_ENTRY("HTTP_X_AMZ"), | |
235 | STR_LEN_ENTRY("HTTP_X_GOOG"), | |
236 | STR_LEN_ENTRY("HTTP_X_DHO"), | |
237 | STR_LEN_ENTRY("HTTP_X_RGW"), | |
238 | STR_LEN_ENTRY("HTTP_X_OBJECT"), | |
239 | STR_LEN_ENTRY("HTTP_X_CONTAINER"), | |
240 | STR_LEN_ENTRY("HTTP_X_ACCOUNT"), | |
241 | {NULL, 0} }; | |
242 | ||
243 | ||
244 | void req_info::init_meta_info(bool *found_bad_meta) | |
245 | { | |
246 | x_meta_map.clear(); | |
247 | ||
248 | map<string, string, ltstr_nocase>& m = env->get_map(); | |
249 | map<string, string, ltstr_nocase>::iterator iter; | |
250 | for (iter = m.begin(); iter != m.end(); ++iter) { | |
251 | const char *prefix; | |
252 | const string& header_name = iter->first; | |
253 | const string& val = iter->second; | |
254 | for (int prefix_num = 0; (prefix = meta_prefixes[prefix_num].str) != NULL; prefix_num++) { | |
255 | int len = meta_prefixes[prefix_num].len; | |
256 | const char *p = header_name.c_str(); | |
257 | if (strncmp(p, prefix, len) == 0) { | |
258 | dout(10) << "meta>> " << p << dendl; | |
259 | const char *name = p+len; /* skip the prefix */ | |
260 | int name_len = header_name.size() - len; | |
261 | ||
262 | if (found_bad_meta && strncmp(name, "_META_", name_len) == 0) | |
263 | *found_bad_meta = true; | |
264 | ||
265 | char name_low[meta_prefixes[0].len + name_len + 1]; | |
266 | snprintf(name_low, meta_prefixes[0].len - 5 + name_len + 1, "%s%s", meta_prefixes[0].str + 5 /* skip HTTP_ */, name); // normalize meta prefix | |
267 | int j; | |
268 | for (j = 0; name_low[j]; j++) { | |
269 | if (name_low[j] != '_') | |
270 | name_low[j] = tolower(name_low[j]); | |
271 | else | |
272 | name_low[j] = '-'; | |
273 | } | |
274 | name_low[j] = 0; | |
275 | ||
276 | map<string, string>::iterator iter; | |
277 | iter = x_meta_map.find(name_low); | |
278 | if (iter != x_meta_map.end()) { | |
279 | string old = iter->second; | |
280 | int pos = old.find_last_not_of(" \t"); /* get rid of any whitespaces after the value */ | |
281 | old = old.substr(0, pos + 1); | |
282 | old.append(","); | |
283 | old.append(val); | |
284 | x_meta_map[name_low] = old; | |
285 | } else { | |
286 | x_meta_map[name_low] = val; | |
287 | } | |
288 | } | |
289 | } | |
290 | } | |
291 | for (iter = x_meta_map.begin(); iter != x_meta_map.end(); ++iter) { | |
292 | dout(10) << "x>> " << iter->first << ":" << rgw::crypt_sanitize::x_meta_map{iter->first, iter->second} << dendl; | |
293 | } | |
294 | } | |
295 | ||
296 | std::ostream& operator<<(std::ostream& oss, const rgw_err &err) | |
297 | { | |
298 | oss << "rgw_err(http_ret=" << err.http_ret << ", s3='" << err.s3_code << "') "; | |
299 | return oss; | |
300 | } | |
301 | ||
302 | string rgw_string_unquote(const string& s) | |
303 | { | |
304 | if (s[0] != '"' || s.size() < 2) | |
305 | return s; | |
306 | ||
307 | int len; | |
308 | for (len = s.size(); len > 2; --len) { | |
309 | if (s[len - 1] != ' ') | |
310 | break; | |
311 | } | |
312 | ||
313 | if (s[len-1] != '"') | |
314 | return s; | |
315 | ||
316 | return s.substr(1, len - 2); | |
317 | } | |
318 | ||
319 | static void trim_whitespace(const string& src, string& dst) | |
320 | { | |
321 | const char *spacestr = " \t\n\r\f\v"; | |
322 | int start = src.find_first_not_of(spacestr); | |
323 | if (start < 0) | |
324 | return; | |
325 | ||
326 | int end = src.find_last_not_of(spacestr); | |
327 | dst = src.substr(start, end - start + 1); | |
328 | } | |
329 | ||
330 | static bool check_str_end(const char *s) | |
331 | { | |
332 | if (!s) | |
333 | return false; | |
334 | ||
335 | while (*s) { | |
336 | if (!isspace(*s)) | |
337 | return false; | |
338 | s++; | |
339 | } | |
340 | return true; | |
341 | } | |
342 | ||
343 | static bool check_gmt_end(const char *s) | |
344 | { | |
345 | if (!s || !*s) | |
346 | return false; | |
347 | ||
348 | while (isspace(*s)) { | |
349 | ++s; | |
350 | } | |
351 | ||
352 | /* check for correct timezone */ | |
353 | if ((strncmp(s, "GMT", 3) != 0) && | |
354 | (strncmp(s, "UTC", 3) != 0)) { | |
355 | return false; | |
356 | } | |
357 | ||
358 | return true; | |
359 | } | |
360 | ||
361 | static bool parse_rfc850(const char *s, struct tm *t) | |
362 | { | |
363 | memset(t, 0, sizeof(*t)); | |
364 | return check_gmt_end(strptime(s, "%A, %d-%b-%y %H:%M:%S ", t)); | |
365 | } | |
366 | ||
367 | static bool parse_asctime(const char *s, struct tm *t) | |
368 | { | |
369 | memset(t, 0, sizeof(*t)); | |
370 | return check_str_end(strptime(s, "%a %b %d %H:%M:%S %Y", t)); | |
371 | } | |
372 | ||
373 | static bool parse_rfc1123(const char *s, struct tm *t) | |
374 | { | |
375 | memset(t, 0, sizeof(*t)); | |
376 | return check_gmt_end(strptime(s, "%a, %d %b %Y %H:%M:%S ", t)); | |
377 | } | |
378 | ||
379 | static bool parse_rfc1123_alt(const char *s, struct tm *t) | |
380 | { | |
381 | memset(t, 0, sizeof(*t)); | |
382 | return check_str_end(strptime(s, "%a, %d %b %Y %H:%M:%S %z", t)); | |
383 | } | |
384 | ||
385 | bool parse_rfc2616(const char *s, struct tm *t) | |
386 | { | |
387 | return parse_rfc850(s, t) || parse_asctime(s, t) || parse_rfc1123(s, t) || parse_rfc1123_alt(s,t); | |
388 | } | |
389 | ||
390 | bool parse_iso8601(const char *s, struct tm *t, uint32_t *pns, bool extended_format) | |
391 | { | |
392 | memset(t, 0, sizeof(*t)); | |
393 | const char *p; | |
394 | ||
395 | if (!s) | |
396 | s = ""; | |
397 | ||
398 | if (extended_format) { | |
399 | p = strptime(s, "%Y-%m-%dT%T", t); | |
400 | if (!p) { | |
401 | p = strptime(s, "%Y-%m-%d %T", t); | |
402 | } | |
403 | } else { | |
404 | p = strptime(s, "%Y%m%dT%H%M%S", t); | |
405 | } | |
406 | if (!p) { | |
407 | dout(0) << "parse_iso8601 failed" << dendl; | |
408 | return false; | |
409 | } | |
410 | string str; | |
411 | trim_whitespace(p, str); | |
412 | int len = str.size(); | |
413 | ||
414 | if (len == 1 && str[0] == 'Z') | |
415 | return true; | |
416 | ||
417 | if (str[0] != '.' || | |
418 | str[len - 1] != 'Z') | |
419 | return false; | |
420 | ||
421 | uint32_t ms; | |
422 | string nsstr = str.substr(1, len - 2); | |
423 | int r = stringtoul(nsstr, &ms); | |
424 | if (r < 0) | |
425 | return false; | |
426 | ||
427 | if (!pns) { | |
428 | return true; | |
429 | } | |
430 | ||
431 | if (nsstr.size() > 9) { | |
432 | nsstr = nsstr.substr(0, 9); | |
433 | } | |
434 | ||
435 | uint64_t mul_table[] = { 0, | |
436 | 100000000LL, | |
437 | 10000000LL, | |
438 | 1000000LL, | |
439 | 100000LL, | |
440 | 10000LL, | |
441 | 1000LL, | |
442 | 100LL, | |
443 | 10LL, | |
444 | 1 }; | |
445 | ||
446 | ||
447 | *pns = ms * mul_table[nsstr.size()]; | |
448 | ||
449 | return true; | |
450 | } | |
451 | ||
452 | int parse_key_value(string& in_str, const char *delim, string& key, string& val) | |
453 | { | |
454 | if (delim == NULL) | |
455 | return -EINVAL; | |
456 | ||
457 | int pos = in_str.find(delim); | |
458 | if (pos < 0) | |
459 | return -EINVAL; | |
460 | ||
461 | trim_whitespace(in_str.substr(0, pos), key); | |
462 | pos++; | |
463 | ||
464 | trim_whitespace(in_str.substr(pos), val); | |
465 | ||
466 | return 0; | |
467 | } | |
468 | ||
469 | int parse_key_value(string& in_str, string& key, string& val) | |
470 | { | |
471 | return parse_key_value(in_str, "=", key,val); | |
472 | } | |
473 | ||
474 | int parse_time(const char *time_str, real_time *time) | |
475 | { | |
476 | struct tm tm; | |
477 | uint32_t ns = 0; | |
478 | ||
479 | if (!parse_rfc2616(time_str, &tm) && !parse_iso8601(time_str, &tm, &ns)) { | |
480 | return -EINVAL; | |
481 | } | |
482 | ||
483 | time_t sec = internal_timegm(&tm); | |
484 | *time = utime_t(sec, ns).to_real_time(); | |
485 | ||
486 | return 0; | |
487 | } | |
488 | ||
489 | #define TIME_BUF_SIZE 128 | |
490 | ||
491 | void rgw_to_iso8601(const real_time& t, char *dest, int buf_size) | |
492 | { | |
493 | utime_t ut(t); | |
494 | ||
495 | char buf[TIME_BUF_SIZE]; | |
496 | struct tm result; | |
497 | time_t epoch = ut.sec(); | |
498 | struct tm *tmp = gmtime_r(&epoch, &result); | |
499 | if (tmp == NULL) | |
500 | return; | |
501 | ||
502 | if (strftime(buf, sizeof(buf), "%Y-%m-%dT%T", tmp) == 0) | |
503 | return; | |
504 | ||
505 | snprintf(dest, buf_size, "%s.%03dZ", buf, (int)(ut.usec() / 1000)); | |
506 | } | |
507 | ||
508 | void rgw_to_iso8601(const real_time& t, string *dest) | |
509 | { | |
510 | char buf[TIME_BUF_SIZE]; | |
511 | rgw_to_iso8601(t, buf, sizeof(buf)); | |
512 | *dest = buf; | |
513 | } | |
514 | ||
515 | /* | |
516 | * calculate the sha1 value of a given msg and key | |
517 | */ | |
518 | void calc_hmac_sha1(const char *key, int key_len, | |
519 | const char *msg, int msg_len, char *dest) | |
520 | /* destination should be CEPH_CRYPTO_HMACSHA1_DIGESTSIZE bytes long */ | |
521 | { | |
522 | HMACSHA1 hmac((const unsigned char *)key, key_len); | |
523 | hmac.Update((const unsigned char *)msg, msg_len); | |
524 | hmac.Final((unsigned char *)dest); | |
525 | } | |
526 | ||
527 | /* | |
528 | * calculate the sha256 value of a given msg and key | |
529 | */ | |
530 | void calc_hmac_sha256(const char *key, int key_len, | |
531 | const char *msg, int msg_len, char *dest) | |
532 | { | |
533 | char hash_sha256[CEPH_CRYPTO_HMACSHA256_DIGESTSIZE]; | |
534 | ||
535 | HMACSHA256 hmac((const unsigned char *)key, key_len); | |
536 | hmac.Update((const unsigned char *)msg, msg_len); | |
537 | hmac.Final((unsigned char *)hash_sha256); | |
538 | ||
539 | memcpy(dest, hash_sha256, CEPH_CRYPTO_HMACSHA256_DIGESTSIZE); | |
540 | } | |
541 | ||
542 | /* | |
543 | * calculate the sha256 hash value of a given msg | |
544 | */ | |
545 | void calc_hash_sha256(const char *msg, int len, string& dest) | |
546 | { | |
547 | char hash_sha256[CEPH_CRYPTO_HMACSHA256_DIGESTSIZE]; | |
548 | ||
549 | SHA256 hash; | |
550 | hash.Update((const unsigned char *)msg, len); | |
551 | hash.Final((unsigned char *)hash_sha256); | |
552 | ||
553 | char hex_str[(CEPH_CRYPTO_SHA256_DIGESTSIZE * 2) + 1]; | |
554 | buf_to_hex((unsigned char *)hash_sha256, CEPH_CRYPTO_SHA256_DIGESTSIZE, hex_str); | |
555 | ||
556 | dest = std::string(hex_str); | |
557 | } | |
558 | ||
559 | using ceph::crypto::SHA256; | |
560 | ||
561 | SHA256* calc_hash_sha256_open_stream() | |
562 | { | |
563 | return new SHA256; | |
564 | } | |
565 | ||
566 | void calc_hash_sha256_update_stream(SHA256 *hash, const char *msg, int len) | |
567 | { | |
568 | hash->Update((const unsigned char *)msg, len); | |
569 | } | |
570 | ||
571 | string calc_hash_sha256_close_stream(SHA256 **phash) | |
572 | { | |
573 | SHA256 *hash = *phash; | |
574 | if (!hash) { | |
575 | hash = calc_hash_sha256_open_stream(); | |
576 | } | |
577 | char hash_sha256[CEPH_CRYPTO_HMACSHA256_DIGESTSIZE]; | |
578 | ||
579 | hash->Final((unsigned char *)hash_sha256); | |
580 | ||
581 | char hex_str[(CEPH_CRYPTO_SHA256_DIGESTSIZE * 2) + 1]; | |
582 | buf_to_hex((unsigned char *)hash_sha256, CEPH_CRYPTO_SHA256_DIGESTSIZE, hex_str); | |
583 | ||
584 | delete hash; | |
585 | *phash = NULL; | |
586 | ||
587 | return std::string(hex_str); | |
588 | } | |
589 | ||
590 | int gen_rand_base64(CephContext *cct, char *dest, int size) /* size should be the required string size + 1 */ | |
591 | { | |
592 | char buf[size]; | |
593 | char tmp_dest[size + 4]; /* so that there's space for the extra '=' characters, and some */ | |
594 | int ret; | |
595 | ||
596 | ret = get_random_bytes(buf, sizeof(buf)); | |
597 | if (ret < 0) { | |
598 | lderr(cct) << "cannot get random bytes: " << cpp_strerror(-ret) << dendl; | |
599 | return ret; | |
600 | } | |
601 | ||
602 | ret = ceph_armor(tmp_dest, &tmp_dest[sizeof(tmp_dest)], | |
603 | (const char *)buf, ((const char *)buf) + ((size - 1) * 3 + 4 - 1) / 4); | |
604 | if (ret < 0) { | |
605 | lderr(cct) << "ceph_armor failed" << dendl; | |
606 | return ret; | |
607 | } | |
608 | tmp_dest[ret] = '\0'; | |
609 | memcpy(dest, tmp_dest, size); | |
610 | dest[size-1] = '\0'; | |
611 | ||
612 | return 0; | |
613 | } | |
614 | ||
615 | static const char alphanum_upper_table[]="0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ"; | |
616 | ||
617 | int gen_rand_alphanumeric_upper(CephContext *cct, char *dest, int size) /* size should be the required string size + 1 */ | |
618 | { | |
619 | int ret = get_random_bytes(dest, size); | |
620 | if (ret < 0) { | |
621 | lderr(cct) << "cannot get random bytes: " << cpp_strerror(-ret) << dendl; | |
622 | return ret; | |
623 | } | |
624 | ||
625 | int i; | |
626 | for (i=0; i<size - 1; i++) { | |
627 | int pos = (unsigned)dest[i]; | |
628 | dest[i] = alphanum_upper_table[pos % (sizeof(alphanum_upper_table) - 1)]; | |
629 | } | |
630 | dest[i] = '\0'; | |
631 | ||
632 | return 0; | |
633 | } | |
634 | ||
635 | static const char alphanum_lower_table[]="0123456789abcdefghijklmnopqrstuvwxyz"; | |
636 | ||
637 | int gen_rand_alphanumeric_lower(CephContext *cct, char *dest, int size) /* size should be the required string size + 1 */ | |
638 | { | |
639 | int ret = get_random_bytes(dest, size); | |
640 | if (ret < 0) { | |
641 | lderr(cct) << "cannot get random bytes: " << cpp_strerror(-ret) << dendl; | |
642 | return ret; | |
643 | } | |
644 | ||
645 | int i; | |
646 | for (i=0; i<size - 1; i++) { | |
647 | int pos = (unsigned)dest[i]; | |
648 | dest[i] = alphanum_lower_table[pos % (sizeof(alphanum_lower_table) - 1)]; | |
649 | } | |
650 | dest[i] = '\0'; | |
651 | ||
652 | return 0; | |
653 | } | |
654 | ||
655 | int gen_rand_alphanumeric_lower(CephContext *cct, string *str, int length) | |
656 | { | |
657 | char buf[length + 1]; | |
658 | int ret = gen_rand_alphanumeric_lower(cct, buf, sizeof(buf)); | |
659 | if (ret < 0) { | |
660 | return ret; | |
661 | } | |
662 | *str = buf; | |
663 | return 0; | |
664 | } | |
665 | ||
666 | // this is basically a modified base64 charset, url friendly | |
667 | static const char alphanum_table[]="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_"; | |
668 | ||
669 | int gen_rand_alphanumeric(CephContext *cct, char *dest, int size) /* size should be the required string size + 1 */ | |
670 | { | |
671 | int ret = get_random_bytes(dest, size); | |
672 | if (ret < 0) { | |
673 | lderr(cct) << "cannot get random bytes: " << cpp_strerror(-ret) << dendl; | |
674 | return ret; | |
675 | } | |
676 | ||
677 | int i; | |
678 | for (i=0; i<size - 1; i++) { | |
679 | int pos = (unsigned)dest[i]; | |
680 | dest[i] = alphanum_table[pos & 63]; | |
681 | } | |
682 | dest[i] = '\0'; | |
683 | ||
684 | return 0; | |
685 | } | |
686 | ||
687 | static const char alphanum_no_underscore_table[]="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-."; | |
688 | ||
689 | int gen_rand_alphanumeric_no_underscore(CephContext *cct, char *dest, int size) /* size should be the required string size + 1 */ | |
690 | { | |
691 | int ret = get_random_bytes(dest, size); | |
692 | if (ret < 0) { | |
693 | lderr(cct) << "cannot get random bytes: " << cpp_strerror(-ret) << dendl; | |
694 | return ret; | |
695 | } | |
696 | ||
697 | int i; | |
698 | for (i=0; i<size - 1; i++) { | |
699 | int pos = (unsigned)dest[i]; | |
700 | dest[i] = alphanum_no_underscore_table[pos & 63]; | |
701 | } | |
702 | dest[i] = '\0'; | |
703 | ||
704 | return 0; | |
705 | } | |
706 | ||
707 | static const char alphanum_plain_table[]="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"; | |
708 | ||
709 | int gen_rand_alphanumeric_plain(CephContext *cct, char *dest, int size) /* size should be the required string size + 1 */ | |
710 | { | |
711 | int ret = get_random_bytes(dest, size); | |
712 | if (ret < 0) { | |
713 | lderr(cct) << "cannot get random bytes: " << cpp_strerror(-ret) << dendl; | |
714 | return ret; | |
715 | } | |
716 | ||
717 | int i; | |
718 | for (i=0; i<size - 1; i++) { | |
719 | int pos = (unsigned)dest[i]; | |
720 | dest[i] = alphanum_plain_table[pos % (sizeof(alphanum_plain_table) - 1)]; | |
721 | } | |
722 | dest[i] = '\0'; | |
723 | ||
724 | return 0; | |
725 | } | |
726 | ||
727 | int NameVal::parse() | |
728 | { | |
729 | int delim_pos = str.find('='); | |
730 | int ret = 0; | |
731 | ||
732 | if (delim_pos < 0) { | |
733 | name = str; | |
734 | val = ""; | |
735 | ret = 1; | |
736 | } else { | |
737 | name = str.substr(0, delim_pos); | |
738 | val = str.substr(delim_pos + 1); | |
739 | } | |
740 | ||
741 | return ret; | |
742 | } | |
743 | ||
744 | int RGWHTTPArgs::parse() | |
745 | { | |
746 | int pos = 0; | |
747 | bool end = false; | |
748 | ||
749 | if (str.empty()) | |
750 | return 0; | |
751 | ||
752 | if (str[pos] == '?') | |
753 | pos++; | |
754 | ||
755 | while (!end) { | |
756 | int fpos = str.find('&', pos); | |
757 | if (fpos < pos) { | |
758 | end = true; | |
759 | fpos = str.size(); | |
760 | } | |
761 | string substr, nameval; | |
762 | substr = str.substr(pos, fpos - pos); | |
763 | url_decode(substr, nameval, true); | |
764 | NameVal nv(nameval); | |
765 | int ret = nv.parse(); | |
766 | if (ret >= 0) { | |
767 | string& name = nv.get_name(); | |
768 | string& val = nv.get_val(); | |
769 | ||
770 | append(name, val); | |
771 | } | |
772 | ||
773 | pos = fpos + 1; | |
774 | } | |
775 | ||
776 | return 0; | |
777 | } | |
778 | ||
779 | void RGWHTTPArgs::append(const string& name, const string& val) | |
780 | { | |
781 | if (name.compare(0, sizeof(RGW_SYS_PARAM_PREFIX) - 1, RGW_SYS_PARAM_PREFIX) == 0) { | |
782 | sys_val_map[name] = val; | |
783 | } else { | |
784 | val_map[name] = val; | |
785 | } | |
786 | ||
787 | if ((name.compare("acl") == 0) || | |
788 | (name.compare("cors") == 0) || | |
789 | (name.compare("location") == 0) || | |
790 | (name.compare("logging") == 0) || | |
791 | (name.compare("usage") == 0) || | |
792 | (name.compare("lifecycle") == 0) || | |
793 | (name.compare("delete") == 0) || | |
794 | (name.compare("uploads") == 0) || | |
795 | (name.compare("partNumber") == 0) || | |
796 | (name.compare("uploadId") == 0) || | |
797 | (name.compare("versionId") == 0) || | |
798 | (name.compare("start-date") == 0) || | |
799 | (name.compare("end-date") == 0) || | |
800 | (name.compare("versions") == 0) || | |
801 | (name.compare("versioning") == 0) || | |
802 | (name.compare("website") == 0) || | |
803 | (name.compare("requestPayment") == 0) || | |
804 | (name.compare("torrent") == 0)) { | |
805 | sub_resources[name] = val; | |
806 | } else if (name[0] == 'r') { // root of all evil | |
807 | if ((name.compare("response-content-type") == 0) || | |
808 | (name.compare("response-content-language") == 0) || | |
809 | (name.compare("response-expires") == 0) || | |
810 | (name.compare("response-cache-control") == 0) || | |
811 | (name.compare("response-content-disposition") == 0) || | |
812 | (name.compare("response-content-encoding") == 0)) { | |
813 | sub_resources[name] = val; | |
814 | has_resp_modifier = true; | |
815 | } | |
816 | } else if ((name.compare("subuser") == 0) || | |
817 | (name.compare("key") == 0) || | |
818 | (name.compare("caps") == 0) || | |
819 | (name.compare("index") == 0) || | |
820 | (name.compare("policy") == 0) || | |
821 | (name.compare("quota") == 0) || | |
822 | (name.compare("object") == 0)) { | |
823 | ||
824 | if (!admin_subresource_added) { | |
825 | sub_resources[name] = ""; | |
826 | admin_subresource_added = true; | |
827 | } | |
828 | } | |
829 | } | |
830 | ||
831 | const string& RGWHTTPArgs::get(const string& name, bool *exists) const | |
832 | { | |
833 | auto iter = val_map.find(name); | |
834 | bool e = (iter != std::end(val_map)); | |
835 | if (exists) | |
836 | *exists = e; | |
837 | if (e) | |
838 | return iter->second; | |
839 | return empty_str; | |
840 | } | |
841 | ||
842 | int RGWHTTPArgs::get_bool(const string& name, bool *val, bool *exists) | |
843 | { | |
844 | map<string, string>::iterator iter; | |
845 | iter = val_map.find(name); | |
846 | bool e = (iter != val_map.end()); | |
847 | if (exists) | |
848 | *exists = e; | |
849 | ||
850 | if (e) { | |
851 | const char *s = iter->second.c_str(); | |
852 | ||
853 | if (strcasecmp(s, "false") == 0) { | |
854 | *val = false; | |
855 | } else if (strcasecmp(s, "true") == 0) { | |
856 | *val = true; | |
857 | } else { | |
858 | return -EINVAL; | |
859 | } | |
860 | } | |
861 | ||
862 | return 0; | |
863 | } | |
864 | ||
865 | int RGWHTTPArgs::get_bool(const char *name, bool *val, bool *exists) | |
866 | { | |
867 | string s(name); | |
868 | return get_bool(s, val, exists); | |
869 | } | |
870 | ||
871 | void RGWHTTPArgs::get_bool(const char *name, bool *val, bool def_val) | |
872 | { | |
873 | bool exists = false; | |
874 | if ((get_bool(name, val, &exists) < 0) || | |
875 | !exists) { | |
876 | *val = def_val; | |
877 | } | |
878 | } | |
879 | ||
880 | string RGWHTTPArgs::sys_get(const string& name, bool * const exists) const | |
881 | { | |
882 | const auto iter = sys_val_map.find(name); | |
883 | const bool e = (iter != sys_val_map.end()); | |
884 | ||
885 | if (exists) { | |
886 | *exists = e; | |
887 | } | |
888 | ||
889 | return e ? iter->second : string(); | |
890 | } | |
891 | ||
892 | bool verify_user_permission(struct req_state * const s, | |
893 | RGWAccessControlPolicy * const user_acl, | |
894 | const int perm) | |
895 | { | |
896 | /* S3 doesn't support account ACLs. */ | |
897 | if (!user_acl) | |
898 | return true; | |
899 | ||
900 | if ((perm & (int)s->perm_mask) != perm) | |
901 | return false; | |
902 | ||
903 | return user_acl->verify_permission(*s->auth.identity, perm, perm); | |
904 | } | |
905 | ||
906 | bool verify_user_permission(struct req_state * const s, | |
907 | const int perm) | |
908 | { | |
909 | return verify_user_permission(s, s->user_acl.get(), perm); | |
910 | } | |
911 | ||
912 | bool verify_requester_payer_permission(struct req_state *s) | |
913 | { | |
914 | if (!s->bucket_info.requester_pays) | |
915 | return true; | |
916 | ||
917 | if (s->auth.identity->is_owner_of(s->bucket_info.owner)) | |
918 | return true; | |
919 | ||
920 | if (s->auth.identity->is_anonymous()) { | |
921 | return false; | |
922 | } | |
923 | ||
924 | const char *request_payer = s->info.env->get("HTTP_X_AMZ_REQUEST_PAYER"); | |
925 | if (!request_payer) { | |
926 | bool exists; | |
927 | request_payer = s->info.args.get("x-amz-request-payer", &exists).c_str(); | |
928 | if (!exists) { | |
929 | return false; | |
930 | } | |
931 | } | |
932 | ||
933 | if (strcasecmp(request_payer, "requester") == 0) { | |
934 | return true; | |
935 | } | |
936 | ||
937 | return false; | |
938 | } | |
939 | ||
940 | bool verify_bucket_permission(struct req_state * const s, | |
941 | RGWAccessControlPolicy * const user_acl, | |
942 | RGWAccessControlPolicy * const bucket_acl, | |
943 | const int perm) | |
944 | { | |
945 | if (!bucket_acl) | |
946 | return false; | |
947 | ||
948 | if ((perm & (int)s->perm_mask) != perm) | |
949 | return false; | |
950 | ||
951 | if (!verify_requester_payer_permission(s)) | |
952 | return false; | |
953 | ||
954 | if (bucket_acl->verify_permission(*s->auth.identity, perm, perm, | |
955 | s->info.env->get("HTTP_REFERER"))) | |
956 | return true; | |
957 | ||
958 | if (!user_acl) | |
959 | return false; | |
960 | ||
961 | return user_acl->verify_permission(*s->auth.identity, perm, perm); | |
962 | } | |
963 | ||
964 | bool verify_bucket_permission(struct req_state * const s, const int perm) | |
965 | { | |
966 | return verify_bucket_permission(s, | |
967 | s->user_acl.get(), | |
968 | s->bucket_acl, | |
969 | perm); | |
970 | } | |
971 | ||
972 | static inline bool check_deferred_bucket_acl(struct req_state * const s, | |
973 | RGWAccessControlPolicy * const user_acl, | |
974 | RGWAccessControlPolicy * const bucket_acl, | |
975 | const uint8_t deferred_check, | |
976 | const int perm) | |
977 | { | |
978 | return (s->defer_to_bucket_acls == deferred_check \ | |
979 | && verify_bucket_permission(s, user_acl, bucket_acl, perm)); | |
980 | } | |
981 | ||
982 | bool verify_object_permission(struct req_state * const s, | |
983 | RGWAccessControlPolicy * const user_acl, | |
984 | RGWAccessControlPolicy * const bucket_acl, | |
985 | RGWAccessControlPolicy * const object_acl, | |
986 | const int perm) | |
987 | { | |
988 | if (!verify_requester_payer_permission(s)) | |
989 | return false; | |
990 | ||
991 | if (check_deferred_bucket_acl(s, user_acl, bucket_acl, RGW_DEFER_TO_BUCKET_ACLS_RECURSE, perm) || | |
992 | check_deferred_bucket_acl(s, user_acl, bucket_acl, RGW_DEFER_TO_BUCKET_ACLS_FULL_CONTROL, RGW_PERM_FULL_CONTROL)) { | |
993 | return true; | |
994 | } | |
995 | ||
996 | if (!object_acl) { | |
997 | return false; | |
998 | } | |
999 | ||
1000 | bool ret = object_acl->verify_permission(*s->auth.identity, s->perm_mask, perm); | |
1001 | if (ret) { | |
1002 | return true; | |
1003 | } | |
1004 | ||
1005 | if (!s->cct->_conf->rgw_enforce_swift_acls) | |
1006 | return ret; | |
1007 | ||
1008 | if ((perm & (int)s->perm_mask) != perm) | |
1009 | return false; | |
1010 | ||
1011 | int swift_perm = 0; | |
1012 | if (perm & (RGW_PERM_READ | RGW_PERM_READ_ACP)) | |
1013 | swift_perm |= RGW_PERM_READ_OBJS; | |
1014 | if (perm & RGW_PERM_WRITE) | |
1015 | swift_perm |= RGW_PERM_WRITE_OBJS; | |
1016 | ||
1017 | if (!swift_perm) | |
1018 | return false; | |
1019 | ||
1020 | /* we already verified the user mask above, so we pass swift_perm as the mask here, | |
1021 | otherwise the mask might not cover the swift permissions bits */ | |
1022 | if (bucket_acl->verify_permission(*s->auth.identity, swift_perm, swift_perm, | |
1023 | s->info.env->get("HTTP_REFERER"))) | |
1024 | return true; | |
1025 | ||
1026 | if (!user_acl) | |
1027 | return false; | |
1028 | ||
1029 | return user_acl->verify_permission(*s->auth.identity, swift_perm, swift_perm); | |
1030 | } | |
1031 | ||
1032 | bool verify_object_permission(struct req_state *s, int perm) | |
1033 | { | |
1034 | return verify_object_permission(s, | |
1035 | s->user_acl.get(), | |
1036 | s->bucket_acl, | |
1037 | s->object_acl, | |
1038 | perm); | |
1039 | } | |
1040 | ||
1041 | class HexTable | |
1042 | { | |
1043 | char table[256]; | |
1044 | ||
1045 | public: | |
1046 | HexTable() { | |
1047 | memset(table, -1, sizeof(table)); | |
1048 | int i; | |
1049 | for (i = '0'; i<='9'; i++) | |
1050 | table[i] = i - '0'; | |
1051 | for (i = 'A'; i<='F'; i++) | |
1052 | table[i] = i - 'A' + 0xa; | |
1053 | for (i = 'a'; i<='f'; i++) | |
1054 | table[i] = i - 'a' + 0xa; | |
1055 | } | |
1056 | ||
1057 | char to_num(char c) { | |
1058 | return table[(int)c]; | |
1059 | } | |
1060 | }; | |
1061 | ||
1062 | static char hex_to_num(char c) | |
1063 | { | |
1064 | static HexTable hex_table; | |
1065 | return hex_table.to_num(c); | |
1066 | } | |
1067 | ||
1068 | bool url_decode(const string& src_str, string& dest_str, bool in_query) | |
1069 | { | |
1070 | const char *src = src_str.c_str(); | |
1071 | char dest[src_str.size() + 1]; | |
1072 | int pos = 0; | |
1073 | char c; | |
1074 | ||
1075 | while (*src) { | |
1076 | if (*src != '%') { | |
1077 | if (!in_query || *src != '+') { | |
1078 | if (*src == '?') in_query = true; | |
1079 | dest[pos++] = *src++; | |
1080 | } else { | |
1081 | dest[pos++] = ' '; | |
1082 | ++src; | |
1083 | } | |
1084 | } else { | |
1085 | src++; | |
1086 | if (!*src) | |
1087 | break; | |
1088 | char c1 = hex_to_num(*src++); | |
1089 | if (!*src) | |
1090 | break; | |
1091 | c = c1 << 4; | |
1092 | if (c1 < 0) | |
1093 | return false; | |
1094 | c1 = hex_to_num(*src++); | |
1095 | if (c1 < 0) | |
1096 | return false; | |
1097 | c |= c1; | |
1098 | dest[pos++] = c; | |
1099 | } | |
1100 | } | |
1101 | dest[pos] = 0; | |
1102 | dest_str = dest; | |
1103 | ||
1104 | return true; | |
1105 | } | |
1106 | ||
1107 | void rgw_uri_escape_char(char c, string& dst) | |
1108 | { | |
1109 | char buf[16]; | |
1110 | snprintf(buf, sizeof(buf), "%%%.2X", (int)(unsigned char)c); | |
1111 | dst.append(buf); | |
1112 | } | |
1113 | ||
1114 | static bool char_needs_url_encoding(char c) | |
1115 | { | |
1116 | if (c <= 0x20 || c >= 0x7f) | |
1117 | return true; | |
1118 | ||
1119 | switch (c) { | |
1120 | case 0x22: | |
1121 | case 0x23: | |
1122 | case 0x25: | |
1123 | case 0x26: | |
1124 | case 0x2B: | |
1125 | case 0x2C: | |
1126 | case 0x2F: | |
1127 | case 0x3A: | |
1128 | case 0x3B: | |
1129 | case 0x3C: | |
1130 | case 0x3E: | |
1131 | case 0x3D: | |
1132 | case 0x3F: | |
1133 | case 0x40: | |
1134 | case 0x5B: | |
1135 | case 0x5D: | |
1136 | case 0x5C: | |
1137 | case 0x5E: | |
1138 | case 0x60: | |
1139 | case 0x7B: | |
1140 | case 0x7D: | |
1141 | return true; | |
1142 | } | |
1143 | return false; | |
1144 | } | |
1145 | ||
1146 | void url_encode(const string& src, string& dst) | |
1147 | { | |
1148 | const char *p = src.c_str(); | |
1149 | for (unsigned i = 0; i < src.size(); i++, p++) { | |
1150 | if (char_needs_url_encoding(*p)) { | |
1151 | rgw_uri_escape_char(*p, dst); | |
1152 | continue; | |
1153 | } | |
1154 | ||
1155 | dst.append(p, 1); | |
1156 | } | |
1157 | } | |
1158 | ||
1159 | std::string url_encode(const std::string& src) | |
1160 | { | |
1161 | std::string dst; | |
1162 | url_encode(src, dst); | |
1163 | ||
1164 | return dst; | |
1165 | } | |
1166 | ||
1167 | string rgw_trim_whitespace(const string& src) | |
1168 | { | |
1169 | if (src.empty()) { | |
1170 | return string(); | |
1171 | } | |
1172 | ||
1173 | int start = 0; | |
1174 | for (; start != (int)src.size(); start++) { | |
1175 | if (!isspace(src[start])) | |
1176 | break; | |
1177 | } | |
1178 | ||
1179 | int end = src.size() - 1; | |
1180 | if (end < start) { | |
1181 | return string(); | |
1182 | } | |
1183 | ||
1184 | for (; end > start; end--) { | |
1185 | if (!isspace(src[end])) | |
1186 | break; | |
1187 | } | |
1188 | ||
1189 | return src.substr(start, end - start + 1); | |
1190 | } | |
1191 | ||
1192 | boost::string_ref rgw_trim_whitespace(const boost::string_ref& src) | |
1193 | { | |
1194 | boost::string_ref res = src; | |
1195 | ||
1196 | while (res.size() > 0 && std::isspace(res.front())) { | |
1197 | res.remove_prefix(1); | |
1198 | } | |
1199 | while (res.size() > 0 && std::isspace(res.back())) { | |
1200 | res.remove_suffix(1); | |
1201 | } | |
1202 | return res; | |
1203 | } | |
1204 | ||
1205 | string rgw_trim_quotes(const string& val) | |
1206 | { | |
1207 | string s = rgw_trim_whitespace(val); | |
1208 | if (s.size() < 2) | |
1209 | return s; | |
1210 | ||
1211 | int start = 0; | |
1212 | int end = s.size() - 1; | |
1213 | int quotes_count = 0; | |
1214 | ||
1215 | if (s[start] == '"') { | |
1216 | start++; | |
1217 | quotes_count++; | |
1218 | } | |
1219 | if (s[end] == '"') { | |
1220 | end--; | |
1221 | quotes_count++; | |
1222 | } | |
1223 | if (quotes_count == 2) { | |
1224 | return s.substr(start, end - start + 1); | |
1225 | } | |
1226 | return s; | |
1227 | } | |
1228 | ||
1229 | struct rgw_name_to_flag { | |
1230 | const char *type_name; | |
1231 | uint32_t flag; | |
1232 | }; | |
1233 | ||
1234 | static int parse_list_of_flags(struct rgw_name_to_flag *mapping, | |
1235 | const string& str, uint32_t *perm) | |
1236 | { | |
1237 | list<string> strs; | |
1238 | get_str_list(str, strs); | |
1239 | list<string>::iterator iter; | |
1240 | uint32_t v = 0; | |
1241 | for (iter = strs.begin(); iter != strs.end(); ++iter) { | |
1242 | string& s = *iter; | |
1243 | for (int i = 0; mapping[i].type_name; i++) { | |
1244 | if (s.compare(mapping[i].type_name) == 0) | |
1245 | v |= mapping[i].flag; | |
1246 | } | |
1247 | } | |
1248 | ||
1249 | *perm = v; | |
1250 | return 0; | |
1251 | } | |
1252 | ||
1253 | static struct rgw_name_to_flag cap_names[] = { {"*", RGW_CAP_ALL}, | |
1254 | {"read", RGW_CAP_READ}, | |
1255 | {"write", RGW_CAP_WRITE}, | |
1256 | {NULL, 0} }; | |
1257 | ||
1258 | int RGWUserCaps::parse_cap_perm(const string& str, uint32_t *perm) | |
1259 | { | |
1260 | return parse_list_of_flags(cap_names, str, perm); | |
1261 | } | |
1262 | ||
1263 | int RGWUserCaps::get_cap(const string& cap, string& type, uint32_t *pperm) | |
1264 | { | |
1265 | int pos = cap.find('='); | |
1266 | if (pos >= 0) { | |
1267 | trim_whitespace(cap.substr(0, pos), type); | |
1268 | } | |
1269 | ||
1270 | if (!is_valid_cap_type(type)) | |
1271 | return -ERR_INVALID_CAP; | |
1272 | ||
1273 | string cap_perm; | |
1274 | uint32_t perm = 0; | |
1275 | if (pos < (int)cap.size() - 1) { | |
1276 | cap_perm = cap.substr(pos + 1); | |
1277 | int r = RGWUserCaps::parse_cap_perm(cap_perm, &perm); | |
1278 | if (r < 0) | |
1279 | return r; | |
1280 | } | |
1281 | ||
1282 | *pperm = perm; | |
1283 | ||
1284 | return 0; | |
1285 | } | |
1286 | ||
1287 | int RGWUserCaps::add_cap(const string& cap) | |
1288 | { | |
1289 | uint32_t perm; | |
1290 | string type; | |
1291 | ||
1292 | int r = get_cap(cap, type, &perm); | |
1293 | if (r < 0) | |
1294 | return r; | |
1295 | ||
1296 | caps[type] |= perm; | |
1297 | ||
1298 | return 0; | |
1299 | } | |
1300 | ||
1301 | int RGWUserCaps::remove_cap(const string& cap) | |
1302 | { | |
1303 | uint32_t perm; | |
1304 | string type; | |
1305 | ||
1306 | int r = get_cap(cap, type, &perm); | |
1307 | if (r < 0) | |
1308 | return r; | |
1309 | ||
1310 | map<string, uint32_t>::iterator iter = caps.find(type); | |
1311 | if (iter == caps.end()) | |
1312 | return 0; | |
1313 | ||
1314 | uint32_t& old_perm = iter->second; | |
1315 | old_perm &= ~perm; | |
1316 | if (!old_perm) | |
1317 | caps.erase(iter); | |
1318 | ||
1319 | return 0; | |
1320 | } | |
1321 | ||
1322 | int RGWUserCaps::add_from_string(const string& str) | |
1323 | { | |
1324 | int start = 0; | |
1325 | do { | |
1326 | int end = str.find(';', start); | |
1327 | if (end < 0) | |
1328 | end = str.size(); | |
1329 | ||
1330 | int r = add_cap(str.substr(start, end - start)); | |
1331 | if (r < 0) | |
1332 | return r; | |
1333 | ||
1334 | start = end + 1; | |
1335 | } while (start < (int)str.size()); | |
1336 | ||
1337 | return 0; | |
1338 | } | |
1339 | ||
1340 | int RGWUserCaps::remove_from_string(const string& str) | |
1341 | { | |
1342 | int start = 0; | |
1343 | do { | |
1344 | int end = str.find(';', start); | |
1345 | if (end < 0) | |
1346 | end = str.size(); | |
1347 | ||
1348 | int r = remove_cap(str.substr(start, end - start)); | |
1349 | if (r < 0) | |
1350 | return r; | |
1351 | ||
1352 | start = end + 1; | |
1353 | } while (start < (int)str.size()); | |
1354 | ||
1355 | return 0; | |
1356 | } | |
1357 | ||
1358 | void RGWUserCaps::dump(Formatter *f) const | |
1359 | { | |
1360 | dump(f, "caps"); | |
1361 | } | |
1362 | ||
1363 | void RGWUserCaps::dump(Formatter *f, const char *name) const | |
1364 | { | |
1365 | f->open_array_section(name); | |
1366 | map<string, uint32_t>::const_iterator iter; | |
1367 | for (iter = caps.begin(); iter != caps.end(); ++iter) | |
1368 | { | |
1369 | f->open_object_section("cap"); | |
1370 | f->dump_string("type", iter->first); | |
1371 | uint32_t perm = iter->second; | |
1372 | string perm_str; | |
1373 | for (int i=0; cap_names[i].type_name; i++) { | |
1374 | if ((perm & cap_names[i].flag) == cap_names[i].flag) { | |
1375 | if (perm_str.size()) | |
1376 | perm_str.append(", "); | |
1377 | ||
1378 | perm_str.append(cap_names[i].type_name); | |
1379 | perm &= ~cap_names[i].flag; | |
1380 | } | |
1381 | } | |
1382 | if (perm_str.empty()) | |
1383 | perm_str = "<none>"; | |
1384 | ||
1385 | f->dump_string("perm", perm_str); | |
1386 | f->close_section(); | |
1387 | } | |
1388 | ||
1389 | f->close_section(); | |
1390 | } | |
1391 | ||
1392 | struct RGWUserCap { | |
1393 | string type; | |
1394 | uint32_t perm; | |
1395 | ||
1396 | void decode_json(JSONObj *obj) { | |
1397 | JSONDecoder::decode_json("type", type, obj); | |
1398 | string perm_str; | |
1399 | JSONDecoder::decode_json("perm", perm_str, obj); | |
1400 | if (RGWUserCaps::parse_cap_perm(perm_str, &perm) < 0) { | |
1401 | throw JSONDecoder::err("failed to parse permissions"); | |
1402 | } | |
1403 | } | |
1404 | }; | |
1405 | ||
1406 | void RGWUserCaps::decode_json(JSONObj *obj) | |
1407 | { | |
1408 | list<RGWUserCap> caps_list; | |
1409 | decode_json_obj(caps_list, obj); | |
1410 | ||
1411 | list<RGWUserCap>::iterator iter; | |
1412 | for (iter = caps_list.begin(); iter != caps_list.end(); ++iter) { | |
1413 | RGWUserCap& cap = *iter; | |
1414 | caps[cap.type] = cap.perm; | |
1415 | } | |
1416 | } | |
1417 | ||
1418 | int RGWUserCaps::check_cap(const string& cap, uint32_t perm) | |
1419 | { | |
1420 | map<string, uint32_t>::iterator iter = caps.find(cap); | |
1421 | ||
1422 | if ((iter == caps.end()) || | |
1423 | (iter->second & perm) != perm) { | |
1424 | return -EPERM; | |
1425 | } | |
1426 | ||
1427 | return 0; | |
1428 | } | |
1429 | ||
1430 | bool RGWUserCaps::is_valid_cap_type(const string& tp) | |
1431 | { | |
1432 | static const char *cap_type[] = { "user", | |
1433 | "users", | |
1434 | "buckets", | |
1435 | "metadata", | |
1436 | "usage", | |
1437 | "zone", | |
1438 | "bilog", | |
1439 | "mdlog", | |
1440 | "datalog", | |
1441 | "opstate" }; | |
1442 | ||
1443 | for (unsigned int i = 0; i < sizeof(cap_type) / sizeof(char *); ++i) { | |
1444 | if (tp.compare(cap_type[i]) == 0) { | |
1445 | return true; | |
1446 | } | |
1447 | } | |
1448 | ||
1449 | return false; | |
1450 | } | |
1451 | ||
1452 | static ssize_t unescape_str(const string& s, ssize_t ofs, char esc_char, char special_char, string *dest) | |
1453 | { | |
1454 | const char *src = s.c_str(); | |
1455 | char dest_buf[s.size() + 1]; | |
1456 | char *destp = dest_buf; | |
1457 | bool esc = false; | |
1458 | ||
1459 | dest_buf[0] = '\0'; | |
1460 | ||
1461 | for (size_t i = ofs; i < s.size(); i++) { | |
1462 | char c = src[i]; | |
1463 | if (!esc && c == esc_char) { | |
1464 | esc = true; | |
1465 | continue; | |
1466 | } | |
1467 | if (!esc && c == special_char) { | |
1468 | *destp = '\0'; | |
1469 | *dest = dest_buf; | |
1470 | return (ssize_t)i + 1; | |
1471 | } | |
1472 | *destp++ = c; | |
1473 | esc = false; | |
1474 | } | |
1475 | *destp = '\0'; | |
1476 | *dest = dest_buf; | |
1477 | return string::npos; | |
1478 | } | |
1479 | ||
1480 | static void escape_str(const string& s, char esc_char, char special_char, string *dest) | |
1481 | { | |
1482 | const char *src = s.c_str(); | |
1483 | char dest_buf[s.size() * 2 + 1]; | |
1484 | char *destp = dest_buf; | |
1485 | ||
1486 | for (size_t i = 0; i < s.size(); i++) { | |
1487 | char c = src[i]; | |
1488 | if (c == esc_char || c == special_char) { | |
1489 | *destp++ = esc_char; | |
1490 | } | |
1491 | *destp++ = c; | |
1492 | } | |
1493 | *destp++ = '\0'; | |
1494 | *dest = dest_buf; | |
1495 | } | |
1496 | ||
1497 | void rgw_pool::from_str(const string& s) | |
1498 | { | |
1499 | size_t pos = unescape_str(s, 0, '\\', ':', &name); | |
1500 | if (pos != string::npos) { | |
1501 | pos = unescape_str(s, pos, '\\', ':', &ns); | |
1502 | /* ignore return; if pos != string::npos it means that we had a colon | |
1503 | * in the middle of ns that wasn't escaped, we're going to stop there | |
1504 | */ | |
1505 | } | |
1506 | } | |
1507 | ||
1508 | string rgw_pool::to_str() const | |
1509 | { | |
1510 | string esc_name; | |
1511 | escape_str(name, '\\', ':', &esc_name); | |
1512 | if (ns.empty()) { | |
1513 | return esc_name; | |
1514 | } | |
1515 | string esc_ns; | |
1516 | escape_str(ns, '\\', ':', &esc_ns); | |
1517 | return esc_name + ":" + esc_ns; | |
1518 | } | |
1519 | ||
1520 | void rgw_raw_obj::decode_from_rgw_obj(bufferlist::iterator& bl) | |
1521 | { | |
1522 | rgw_obj old_obj; | |
1523 | ::decode(old_obj, bl); | |
1524 | ||
1525 | get_obj_bucket_and_oid_loc(old_obj, oid, loc); | |
1526 | pool = old_obj.get_explicit_data_pool(); | |
1527 | } | |
1528 | ||
1529 | std::string rgw_bucket::get_key(char tenant_delim, char id_delim) const | |
1530 | { | |
1531 | static constexpr size_t shard_len{12}; // ":4294967295\0" | |
1532 | const size_t max_len = tenant.size() + sizeof(tenant_delim) + | |
1533 | name.size() + sizeof(id_delim) + bucket_id.size() + shard_len; | |
1534 | ||
1535 | std::string key; | |
1536 | key.reserve(max_len); | |
1537 | if (!tenant.empty() && tenant_delim) { | |
1538 | key.append(tenant); | |
1539 | key.append(1, tenant_delim); | |
1540 | } | |
1541 | key.append(name); | |
1542 | if (!bucket_id.empty() && id_delim) { | |
1543 | key.append(1, id_delim); | |
1544 | key.append(bucket_id); | |
1545 | } | |
1546 | return key; | |
1547 | } | |
1548 | ||
1549 | std::string rgw_bucket_shard::get_key(char tenant_delim, char id_delim, | |
1550 | char shard_delim) const | |
1551 | { | |
1552 | auto key = bucket.get_key(tenant_delim, id_delim); | |
1553 | if (shard_id >= 0 && shard_delim) { | |
1554 | key.append(1, shard_delim); | |
1555 | key.append(std::to_string(shard_id)); | |
1556 | } | |
1557 | return key; | |
1558 | } | |
1559 | ||
1560 | static struct rgw_name_to_flag op_type_mapping[] = { {"*", RGW_OP_TYPE_ALL}, | |
1561 | {"read", RGW_OP_TYPE_READ}, | |
1562 | {"write", RGW_OP_TYPE_WRITE}, | |
1563 | {"delete", RGW_OP_TYPE_DELETE}, | |
1564 | {NULL, 0} }; | |
1565 | ||
1566 | ||
1567 | int rgw_parse_op_type_list(const string& str, uint32_t *perm) | |
1568 | { | |
1569 | return parse_list_of_flags(op_type_mapping, str, perm); | |
1570 | } | |
1571 | ||
1572 | static int match_internal(boost::string_ref pattern, boost::string_ref input, int (*function)(const char&, const char&)) | |
1573 | { | |
1574 | boost::string_ref::iterator it1 = pattern.begin(); | |
1575 | boost::string_ref::iterator it2 = input.begin(); | |
1576 | while(true) { | |
1577 | if (it1 == pattern.end() && it2 == input.end()) | |
1578 | return 1; | |
1579 | if (it1 == pattern.end() || it2 == input.end()) | |
1580 | return 0; | |
1581 | if (*it1 == '*' && (it1 + 1) == pattern.end() && it2 != input.end()) | |
1582 | return 1; | |
1583 | if (*it1 == '*' && (it1 + 1) == pattern.end() && it2 == input.end()) | |
1584 | return 0; | |
1585 | if (function(*it1, *it2) || *it1 == '?') { | |
1586 | ++it1; | |
1587 | ++it2; | |
1588 | continue; | |
1589 | } | |
1590 | if (*it1 == '*') { | |
1591 | if (function(*(it1 + 1), *it2)) | |
1592 | ++it1; | |
1593 | else | |
1594 | ++it2; | |
1595 | continue; | |
1596 | } | |
1597 | return 0; | |
1598 | } | |
1599 | return 0; | |
1600 | } | |
1601 | ||
1602 | static int matchcase(const char& c1, const char& c2) | |
1603 | { | |
1604 | if (c1 == c2) | |
1605 | return 1; | |
1606 | return 0; | |
1607 | } | |
1608 | ||
1609 | static int matchignorecase(const char& c1, const char& c2) | |
1610 | { | |
1611 | if (tolower(c1) == tolower(c2)) | |
1612 | return 1; | |
1613 | return 0; | |
1614 | } | |
1615 | ||
1616 | int match(const string& pattern, const string& input, int flag) | |
1617 | { | |
1618 | auto last_pos_input = 0, last_pos_pattern = 0; | |
1619 | ||
1620 | while(true) { | |
1621 | auto cur_pos_input = input.find(":", last_pos_input); | |
1622 | auto cur_pos_pattern = pattern.find(":", last_pos_pattern); | |
1623 | ||
1624 | string substr_input = input.substr(last_pos_input, cur_pos_input); | |
1625 | string substr_pattern = pattern.substr(last_pos_pattern, cur_pos_pattern); | |
1626 | ||
1627 | int res; | |
1628 | if (flag & POLICY_ACTION || flag & POLICY_ARN) { | |
1629 | res = match_internal(substr_pattern, substr_input, &matchignorecase); | |
1630 | } else { | |
1631 | res = match_internal(substr_pattern, substr_input, &matchcase); | |
1632 | } | |
1633 | if (res == 0) | |
1634 | return 0; | |
1635 | ||
1636 | if (cur_pos_pattern == string::npos && cur_pos_input == string::npos) | |
1637 | return 1; | |
1638 | else if ((cur_pos_pattern == string::npos && cur_pos_input != string::npos) || | |
1639 | (cur_pos_pattern != string::npos && cur_pos_input == string::npos)) | |
1640 | return 0; | |
1641 | ||
1642 | last_pos_pattern = cur_pos_pattern + 1; | |
1643 | last_pos_input = cur_pos_input + 1; | |
1644 | } | |
1645 | } |