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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 | ||
5 | #include <cstring> | |
6 | #include <sstream> | |
7 | #include <stack> | |
8 | #include <utility> | |
9 | ||
10 | #include <boost/regex.hpp> | |
11 | ||
12 | #include "rapidjson/reader.h" | |
13 | ||
14 | #include "rgw_auth.h" | |
15 | #include "rgw_iam_policy.h" | |
16 | ||
17 | namespace { | |
18 | constexpr int dout_subsys = ceph_subsys_rgw; | |
19 | } | |
20 | ||
21 | using std::bitset; | |
22 | using std::find; | |
23 | using std::int64_t; | |
24 | using std::move; | |
25 | using std::pair; | |
26 | using std::size_t; | |
27 | using std::string; | |
28 | using std::stringstream; | |
29 | using std::ostream; | |
30 | using std::uint16_t; | |
31 | using std::uint64_t; | |
32 | using std::unordered_map; | |
33 | ||
34 | using boost::container::flat_set; | |
35 | using boost::none; | |
36 | using boost::optional; | |
37 | using boost::regex; | |
38 | using boost::regex_constants::ECMAScript; | |
39 | using boost::regex_constants::optimize; | |
40 | using boost::regex_match; | |
41 | using boost::smatch; | |
42 | ||
43 | using rapidjson::BaseReaderHandler; | |
44 | using rapidjson::UTF8; | |
45 | using rapidjson::SizeType; | |
46 | using rapidjson::Reader; | |
47 | using rapidjson::kParseCommentsFlag; | |
48 | using rapidjson::kParseNumbersAsStringsFlag; | |
49 | using rapidjson::StringStream; | |
50 | using rapidjson::ParseResult; | |
51 | ||
52 | using rgw::auth::Principal; | |
53 | ||
54 | namespace rgw { | |
55 | namespace IAM { | |
56 | #include "rgw_iam_policy_keywords.frag.cc" | |
57 | ||
58 | struct actpair { | |
59 | const char* name; | |
60 | const uint64_t bit; | |
61 | }; | |
62 | ||
63 | namespace { | |
64 | optional<Partition> to_partition(const smatch::value_type& p, | |
65 | bool wildcards) { | |
66 | if (p == "aws") { | |
67 | return Partition::aws; | |
68 | } else if (p == "aws-cn") { | |
69 | return Partition::aws_cn; | |
70 | } else if (p == "aws-us-gov") { | |
71 | return Partition::aws_us_gov; | |
72 | } else if (p == "*" && wildcards) { | |
73 | return Partition::wildcard; | |
74 | } else { | |
75 | return none; | |
76 | } | |
77 | ||
78 | ceph_abort(); | |
79 | } | |
80 | ||
81 | optional<Service> to_service(const smatch::value_type& s, | |
82 | bool wildcards) { | |
83 | static const unordered_map<string, Service> services = { | |
84 | { "acm", Service::acm }, | |
85 | { "apigateway", Service::apigateway }, | |
86 | { "appstream", Service::appstream }, | |
87 | { "artifact", Service::artifact }, | |
88 | { "autoscaling", Service::autoscaling }, | |
89 | { "aws-marketplace", Service::aws_marketplace }, | |
90 | { "aws-marketplace-management", | |
91 | Service::aws_marketplace_management }, | |
92 | { "aws-portal", Service::aws_portal }, | |
93 | { "cloudformation", Service::cloudformation }, | |
94 | { "cloudfront", Service::cloudfront }, | |
95 | { "cloudhsm", Service::cloudhsm }, | |
96 | { "cloudsearch", Service::cloudsearch }, | |
97 | { "cloudtrail", Service::cloudtrail }, | |
98 | { "cloudwatch", Service::cloudwatch }, | |
99 | { "codebuild", Service::codebuild }, | |
100 | { "codecommit", Service::codecommit }, | |
101 | { "codedeploy", Service::codedeploy }, | |
102 | { "codepipeline", Service::codepipeline }, | |
103 | { "cognito-identity", Service::cognito_identity }, | |
104 | { "cognito-idp", Service::cognito_idp }, | |
105 | { "cognito-sync", Service::cognito_sync }, | |
106 | { "config", Service::config }, | |
107 | { "datapipeline", Service::datapipeline }, | |
108 | { "devicefarm", Service::devicefarm }, | |
109 | { "directconnect", Service::directconnect }, | |
110 | { "dms", Service::dms }, | |
111 | { "ds", Service::ds }, | |
112 | { "dynamodb", Service::dynamodb }, | |
113 | { "ec2", Service::ec2 }, | |
114 | { "ecr", Service::ecr }, | |
115 | { "ecs", Service::ecs }, | |
116 | { "elasticache", Service::elasticache }, | |
117 | { "elasticbeanstalk", Service::elasticbeanstalk }, | |
118 | { "elasticfilesystem", Service::elasticfilesystem }, | |
119 | { "elasticloadbalancing", Service::elasticloadbalancing }, | |
120 | { "elasticmapreduce", Service::elasticmapreduce }, | |
121 | { "elastictranscoder", Service::elastictranscoder }, | |
122 | { "es", Service::es }, | |
123 | { "events", Service::events }, | |
124 | { "firehose", Service::firehose }, | |
125 | { "gamelift", Service::gamelift }, | |
126 | { "glacier", Service::glacier }, | |
127 | { "health", Service::health }, | |
128 | { "iam", Service::iam }, | |
129 | { "importexport", Service::importexport }, | |
130 | { "inspector", Service::inspector }, | |
131 | { "iot", Service::iot }, | |
132 | { "kinesis", Service::kinesis }, | |
133 | { "kinesisanalytics", Service::kinesisanalytics }, | |
134 | { "kms", Service::kms }, | |
135 | { "lambda", Service::lambda }, | |
136 | { "lightsail", Service::lightsail }, | |
137 | { "logs", Service::logs }, | |
138 | { "machinelearning", Service::machinelearning }, | |
139 | { "mobileanalytics", Service::mobileanalytics }, | |
140 | { "mobilehub", Service::mobilehub }, | |
141 | { "opsworks", Service::opsworks }, | |
142 | { "opsworks-cm", Service::opsworks_cm }, | |
143 | { "polly", Service::polly }, | |
144 | { "rds", Service::rds }, | |
145 | { "redshift", Service::redshift }, | |
146 | { "route53", Service::route53 }, | |
147 | { "route53domains", Service::route53domains }, | |
148 | { "s3", Service::s3 }, | |
149 | { "sdb", Service::sdb }, | |
150 | { "servicecatalog", Service::servicecatalog }, | |
151 | { "ses", Service::ses }, | |
152 | { "sns", Service::sns }, | |
153 | { "sqs", Service::sqs }, | |
154 | { "ssm", Service::ssm }, | |
155 | { "states", Service::states }, | |
156 | { "storagegateway", Service::storagegateway }, | |
157 | { "sts", Service::sts }, | |
158 | { "support", Service::support }, | |
159 | { "swf", Service::swf }, | |
160 | { "trustedadvisor", Service::trustedadvisor }, | |
161 | { "waf", Service::waf }, | |
162 | { "workmail", Service::workmail }, | |
163 | { "workspaces", Service::workspaces }}; | |
164 | ||
165 | if (wildcards && s == "*") { | |
166 | return Service::wildcard; | |
167 | } | |
168 | ||
169 | auto i = services.find(s); | |
170 | if (i == services.end()) { | |
171 | return none; | |
172 | } else { | |
173 | return i->second; | |
174 | } | |
175 | } | |
176 | } | |
177 | ||
178 | ARN::ARN(const rgw_obj& o) | |
179 | : partition(Partition::aws), | |
180 | service(Service::s3), | |
181 | region(), | |
182 | account(o.bucket.tenant), | |
183 | resource(o.bucket.name) | |
184 | { | |
185 | resource.push_back('/'); | |
186 | resource.append(o.key.name); | |
187 | } | |
188 | ||
189 | ARN::ARN(const rgw_bucket& b) | |
190 | : partition(Partition::aws), | |
191 | service(Service::s3), | |
192 | region(), | |
193 | account(b.tenant), | |
194 | resource(b.name) { } | |
195 | ||
196 | ARN::ARN(const rgw_bucket& b, const string& o) | |
197 | : partition(Partition::aws), | |
198 | service(Service::s3), | |
199 | region(), | |
200 | account(b.tenant), | |
201 | resource(b.name) { | |
202 | resource.push_back('/'); | |
203 | resource.append(o); | |
204 | } | |
205 | ||
206 | optional<ARN> ARN::parse(const string& s, bool wildcards) { | |
207 | static const char str_wild[] = "arn:([^:]*):([^:]*):([^:]*):([^:]*):([^:]*)"; | |
208 | static const regex rx_wild(str_wild, | |
209 | sizeof(str_wild) - 1, | |
210 | ECMAScript | optimize); | |
211 | static const char str_no_wild[] | |
212 | = "arn:([^:*]*):([^:*]*):([^:*]*):([^:*]*):([^:*]*)"; | |
213 | static const regex rx_no_wild(str_no_wild, | |
214 | sizeof(str_no_wild) - 1, | |
215 | ECMAScript | optimize); | |
216 | ||
217 | smatch match; | |
218 | ||
219 | if ((s == "*") && wildcards) { | |
220 | return ARN(Partition::wildcard, Service::wildcard, "*", "*", "*"); | |
221 | } else if (regex_match(s, match, wildcards ? rx_wild : rx_no_wild)) { | |
222 | ceph_assert(match.size() == 6); | |
223 | ||
224 | ARN a; | |
225 | { | |
226 | auto p = to_partition(match[1], wildcards); | |
227 | if (!p) | |
228 | return none; | |
229 | ||
230 | a.partition = *p; | |
231 | } | |
232 | { | |
233 | auto s = to_service(match[2], wildcards); | |
234 | if (!s) { | |
235 | return none; | |
236 | } | |
237 | a.service = *s; | |
238 | } | |
239 | ||
240 | a.region = match[3]; | |
241 | a.account = match[4]; | |
242 | a.resource = match[5]; | |
243 | ||
244 | return a; | |
245 | } | |
246 | return none; | |
247 | } | |
248 | ||
249 | string ARN::to_string() const { | |
250 | string s; | |
251 | ||
252 | if (partition == Partition::aws) { | |
253 | s.append("aws:"); | |
254 | } else if (partition == Partition::aws_cn) { | |
255 | s.append("aws-cn:"); | |
256 | } else if (partition == Partition::aws_us_gov) { | |
257 | s.append("aws-us-gov:"); | |
258 | } else { | |
259 | s.append("*:"); | |
260 | } | |
261 | ||
262 | static const unordered_map<Service, string> services = { | |
263 | { Service::acm, "acm" }, | |
264 | { Service::apigateway, "apigateway" }, | |
265 | { Service::appstream, "appstream" }, | |
266 | { Service::artifact, "artifact" }, | |
267 | { Service::autoscaling, "autoscaling" }, | |
268 | { Service::aws_marketplace, "aws-marketplace" }, | |
269 | { Service::aws_marketplace_management, "aws-marketplace-management" }, | |
270 | { Service::aws_portal, "aws-portal" }, | |
271 | { Service::cloudformation, "cloudformation" }, | |
272 | { Service::cloudfront, "cloudfront" }, | |
273 | { Service::cloudhsm, "cloudhsm" }, | |
274 | { Service::cloudsearch, "cloudsearch" }, | |
275 | { Service::cloudtrail, "cloudtrail" }, | |
276 | { Service::cloudwatch, "cloudwatch" }, | |
277 | { Service::codebuild, "codebuild" }, | |
278 | { Service::codecommit, "codecommit" }, | |
279 | { Service::codedeploy, "codedeploy" }, | |
280 | { Service::codepipeline, "codepipeline" }, | |
281 | { Service::cognito_identity, "cognito-identity" }, | |
282 | { Service::cognito_idp, "cognito-idp" }, | |
283 | { Service::cognito_sync, "cognito-sync" }, | |
284 | { Service::config, "config" }, | |
285 | { Service::datapipeline, "datapipeline" }, | |
286 | { Service::devicefarm, "devicefarm" }, | |
287 | { Service::directconnect, "directconnect" }, | |
288 | { Service::dms, "dms" }, | |
289 | { Service::ds, "ds" }, | |
290 | { Service::dynamodb, "dynamodb" }, | |
291 | { Service::ec2, "ec2" }, | |
292 | { Service::ecr, "ecr" }, | |
293 | { Service::ecs, "ecs" }, | |
294 | { Service::elasticache, "elasticache" }, | |
295 | { Service::elasticbeanstalk, "elasticbeanstalk" }, | |
296 | { Service::elasticfilesystem, "elasticfilesystem" }, | |
297 | { Service::elasticloadbalancing, "elasticloadbalancing" }, | |
298 | { Service::elasticmapreduce, "elasticmapreduce" }, | |
299 | { Service::elastictranscoder, "elastictranscoder" }, | |
300 | { Service::es, "es" }, | |
301 | { Service::events, "events" }, | |
302 | { Service::firehose, "firehose" }, | |
303 | { Service::gamelift, "gamelift" }, | |
304 | { Service::glacier, "glacier" }, | |
305 | { Service::health, "health" }, | |
306 | { Service::iam, "iam" }, | |
307 | { Service::importexport, "importexport" }, | |
308 | { Service::inspector, "inspector" }, | |
309 | { Service::iot, "iot" }, | |
310 | { Service::kinesis, "kinesis" }, | |
311 | { Service::kinesisanalytics, "kinesisanalytics" }, | |
312 | { Service::kms, "kms" }, | |
313 | { Service::lambda, "lambda" }, | |
314 | { Service::lightsail, "lightsail" }, | |
315 | { Service::logs, "logs" }, | |
316 | { Service::machinelearning, "machinelearning" }, | |
317 | { Service::mobileanalytics, "mobileanalytics" }, | |
318 | { Service::mobilehub, "mobilehub" }, | |
319 | { Service::opsworks, "opsworks" }, | |
320 | { Service::opsworks_cm, "opsworks-cm" }, | |
321 | { Service::polly, "polly" }, | |
322 | { Service::rds, "rds" }, | |
323 | { Service::redshift, "redshift" }, | |
324 | { Service::route53, "route53" }, | |
325 | { Service::route53domains, "route53domains" }, | |
326 | { Service::s3, "s3" }, | |
327 | { Service::sdb, "sdb" }, | |
328 | { Service::servicecatalog, "servicecatalog" }, | |
329 | { Service::ses, "ses" }, | |
330 | { Service::sns, "sns" }, | |
331 | { Service::sqs, "sqs" }, | |
332 | { Service::ssm, "ssm" }, | |
333 | { Service::states, "states" }, | |
334 | { Service::storagegateway, "storagegateway" }, | |
335 | { Service::sts, "sts" }, | |
336 | { Service::support, "support" }, | |
337 | { Service::swf, "swf" }, | |
338 | { Service::trustedadvisor, "trustedadvisor" }, | |
339 | { Service::waf, "waf" }, | |
340 | { Service::workmail, "workmail" }, | |
341 | { Service::workspaces, "workspaces" }}; | |
342 | ||
343 | auto i = services.find(service); | |
344 | if (i != services.end()) { | |
345 | s.append(i->second); | |
346 | } else { | |
347 | s.push_back('*'); | |
348 | } | |
349 | s.push_back(':'); | |
350 | ||
351 | s.append(region); | |
352 | s.push_back(':'); | |
353 | ||
354 | s.append(account); | |
355 | s.push_back(':'); | |
356 | ||
357 | s.append(resource); | |
358 | ||
359 | return s; | |
360 | } | |
361 | ||
362 | bool operator ==(const ARN& l, const ARN& r) { | |
363 | return ((l.partition == r.partition) && | |
364 | (l.service == r.service) && | |
365 | (l.region == r.region) && | |
366 | (l.account == r.account) && | |
367 | (l.resource == r.resource)); | |
368 | } | |
369 | bool operator <(const ARN& l, const ARN& r) { | |
370 | return ((l.partition < r.partition) || | |
371 | (l.service < r.service) || | |
372 | (l.region < r.region) || | |
373 | (l.account < r.account) || | |
374 | (l.resource < r.resource)); | |
375 | } | |
376 | ||
377 | // The candidate is not allowed to have wildcards. The only way to | |
378 | // do that sanely would be to use unification rather than matching. | |
379 | bool ARN::match(const ARN& candidate) const { | |
380 | if ((candidate.partition == Partition::wildcard) || | |
381 | (partition != candidate.partition && partition | |
382 | != Partition::wildcard)) { | |
383 | return false; | |
384 | } | |
385 | ||
386 | if ((candidate.service == Service::wildcard) || | |
387 | (service != candidate.service && service != Service::wildcard)) { | |
388 | return false; | |
389 | } | |
390 | ||
391 | if (!::match(region, candidate.region, MATCH_POLICY_ARN)) { | |
392 | return false; | |
393 | } | |
394 | ||
395 | if (!::match(account, candidate.account, MATCH_POLICY_ARN)) { | |
396 | return false; | |
397 | } | |
398 | ||
399 | if (!::match(resource, candidate.resource, MATCH_POLICY_ARN)) { | |
400 | return false; | |
401 | } | |
402 | ||
403 | return true; | |
404 | } | |
405 | ||
406 | static const actpair actpairs[] = | |
407 | {{ "s3:AbortMultipartUpload", s3AbortMultipartUpload }, | |
408 | { "s3:CreateBucket", s3CreateBucket }, | |
409 | { "s3:DeleteBucketPolicy", s3DeleteBucketPolicy }, | |
410 | { "s3:DeleteBucket", s3DeleteBucket }, | |
411 | { "s3:DeleteBucketWebsite", s3DeleteBucketWebsite }, | |
412 | { "s3:DeleteObject", s3DeleteObject }, | |
413 | { "s3:DeleteObjectVersion", s3DeleteObjectVersion }, | |
414 | { "s3:DeleteReplicationConfiguration", s3DeleteReplicationConfiguration }, | |
415 | { "s3:GetAccelerateConfiguration", s3GetAccelerateConfiguration }, | |
416 | { "s3:GetBucketAcl", s3GetBucketAcl }, | |
417 | { "s3:GetBucketCORS", s3GetBucketCORS }, | |
418 | { "s3:GetBucketLocation", s3GetBucketLocation }, | |
419 | { "s3:GetBucketLogging", s3GetBucketLogging }, | |
420 | { "s3:GetBucketNotification", s3GetBucketNotification }, | |
421 | { "s3:GetBucketPolicy", s3GetBucketPolicy }, | |
422 | { "s3:GetBucketRequestPayment", s3GetBucketRequestPayment }, | |
423 | { "s3:GetBucketTagging", s3GetBucketTagging }, | |
424 | { "s3:GetBucketVersioning", s3GetBucketVersioning }, | |
425 | { "s3:GetBucketWebsite", s3GetBucketWebsite }, | |
426 | { "s3:GetLifecycleConfiguration", s3GetLifecycleConfiguration }, | |
427 | { "s3:GetObjectAcl", s3GetObjectAcl }, | |
428 | { "s3:GetObject", s3GetObject }, | |
429 | { "s3:GetObjectTorrent", s3GetObjectTorrent }, | |
430 | { "s3:GetObjectVersionAcl", s3GetObjectVersionAcl }, | |
431 | { "s3:GetObjectVersion", s3GetObjectVersion }, | |
432 | { "s3:GetObjectVersionTorrent", s3GetObjectVersionTorrent }, | |
433 | { "s3:GetReplicationConfiguration", s3GetReplicationConfiguration }, | |
434 | { "s3:ListAllMyBuckets", s3ListAllMyBuckets }, | |
435 | { "s3:ListBucketMultiPartUploads", s3ListBucketMultiPartUploads }, | |
436 | { "s3:ListBucket", s3ListBucket }, | |
437 | { "s3:ListBucketVersions", s3ListBucketVersions }, | |
438 | { "s3:ListMultipartUploadParts", s3ListMultipartUploadParts }, | |
439 | { "s3:PutAccelerateConfiguration", s3PutAccelerateConfiguration }, | |
440 | { "s3:PutBucketAcl", s3PutBucketAcl }, | |
441 | { "s3:PutBucketCORS", s3PutBucketCORS }, | |
442 | { "s3:PutBucketLogging", s3PutBucketLogging }, | |
443 | { "s3:PutBucketNotification", s3PutBucketNotification }, | |
444 | { "s3:PutBucketPolicy", s3PutBucketPolicy }, | |
445 | { "s3:PutBucketRequestPayment", s3PutBucketRequestPayment }, | |
446 | { "s3:PutBucketTagging", s3PutBucketTagging }, | |
447 | { "s3:PutBucketVersioning", s3PutBucketVersioning }, | |
448 | { "s3:PutBucketWebsite", s3PutBucketWebsite }, | |
449 | { "s3:PutLifecycleConfiguration", s3PutLifecycleConfiguration }, | |
450 | { "s3:PutObjectAcl", s3PutObjectAcl }, | |
451 | { "s3:PutObject", s3PutObject }, | |
452 | { "s3:PutObjectVersionAcl", s3PutObjectVersionAcl }, | |
453 | { "s3:PutReplicationConfiguration", s3PutReplicationConfiguration }, | |
454 | { "s3:RestoreObject", s3RestoreObject }}; | |
455 | ||
456 | struct PolicyParser; | |
457 | ||
458 | const Keyword top[1]{"<Top>", TokenKind::pseudo, TokenID::Top, 0, false, | |
459 | false}; | |
460 | const Keyword cond_key[1]{"<Condition Key>", TokenKind::cond_key, | |
461 | TokenID::CondKey, 0, true, false}; | |
462 | ||
463 | struct ParseState { | |
464 | PolicyParser* pp; | |
465 | const Keyword* w; | |
466 | ||
467 | bool arraying = false; | |
468 | bool objecting = false; | |
469 | ||
470 | void reset(); | |
471 | ||
472 | ParseState(PolicyParser* pp, const Keyword* w) | |
473 | : pp(pp), w(w) {} | |
474 | ||
475 | bool obj_start(); | |
476 | ||
477 | bool obj_end(); | |
478 | ||
479 | bool array_start() { | |
480 | if (w->arrayable && !arraying) { | |
481 | arraying = true; | |
482 | return true; | |
483 | } | |
484 | return false; | |
485 | } | |
486 | ||
487 | bool array_end(); | |
488 | ||
489 | bool key(const char* s, size_t l); | |
490 | bool do_string(CephContext* cct, const char* s, size_t l); | |
491 | bool number(const char* str, size_t l); | |
492 | }; | |
493 | ||
494 | // If this confuses you, look up the Curiously Recurring Template Pattern | |
495 | struct PolicyParser : public BaseReaderHandler<UTF8<>, PolicyParser> { | |
496 | keyword_hash tokens; | |
497 | std::vector<ParseState> s; | |
498 | CephContext* cct; | |
499 | const string& tenant; | |
500 | Policy& policy; | |
501 | ||
502 | uint32_t seen = 0; | |
503 | ||
504 | uint32_t dex(TokenID in) const { | |
505 | switch (in) { | |
506 | case TokenID::Version: | |
507 | return 0x1; | |
508 | case TokenID::Id: | |
509 | return 0x2; | |
510 | case TokenID::Statement: | |
511 | return 0x4; | |
512 | case TokenID::Sid: | |
513 | return 0x8; | |
514 | case TokenID::Effect: | |
515 | return 0x10; | |
516 | case TokenID::Principal: | |
517 | return 0x20; | |
518 | case TokenID::NotPrincipal: | |
519 | return 0x40; | |
520 | case TokenID::Action: | |
521 | return 0x80; | |
522 | case TokenID::NotAction: | |
523 | return 0x100; | |
524 | case TokenID::Resource: | |
525 | return 0x200; | |
526 | case TokenID::NotResource: | |
527 | return 0x400; | |
528 | case TokenID::Condition: | |
529 | return 0x800; | |
530 | case TokenID::AWS: | |
531 | return 0x1000; | |
532 | case TokenID::Federated: | |
533 | return 0x2000; | |
534 | case TokenID::Service: | |
535 | return 0x4000; | |
536 | case TokenID::CanonicalUser: | |
537 | return 0x8000; | |
538 | default: | |
539 | ceph_abort(); | |
540 | } | |
541 | } | |
542 | bool test(TokenID in) { | |
543 | return seen & dex(in); | |
544 | } | |
545 | void set(TokenID in) { | |
546 | seen |= dex(in); | |
547 | } | |
548 | void set(std::initializer_list<TokenID> l) { | |
549 | for (auto in : l) { | |
550 | seen |= dex(in); | |
551 | } | |
552 | } | |
553 | void reset(TokenID in) { | |
554 | seen &= ~dex(in); | |
555 | } | |
556 | void reset(std::initializer_list<TokenID> l) { | |
557 | for (auto in : l) { | |
558 | seen &= ~dex(in); | |
559 | } | |
560 | } | |
561 | ||
562 | PolicyParser(CephContext* cct, const string& tenant, Policy& policy) | |
563 | : cct(cct), tenant(tenant), policy(policy) {} | |
564 | PolicyParser(const PolicyParser& policy) = delete; | |
565 | ||
566 | bool StartObject() { | |
567 | if (s.empty()) { | |
568 | s.push_back({this, top}); | |
569 | s.back().objecting = true; | |
570 | return true; | |
571 | } | |
572 | ||
573 | return s.back().obj_start(); | |
574 | } | |
575 | bool EndObject(SizeType memberCount) { | |
576 | if (s.empty()) { | |
577 | return false; | |
578 | } | |
579 | ||
580 | return s.back().obj_end(); | |
581 | } | |
582 | bool Key(const char* str, SizeType length, bool copy) { | |
583 | if (s.empty()) { | |
584 | return false; | |
585 | } | |
586 | ||
587 | return s.back().key(str, length); | |
588 | } | |
589 | ||
590 | bool String(const char* str, SizeType length, bool copy) { | |
591 | if (s.empty()) { | |
592 | return false; | |
593 | } | |
594 | ||
595 | return s.back().do_string(cct, str, length); | |
596 | } | |
597 | bool RawNumber(const char* str, SizeType length, bool copy) { | |
598 | if (s.empty()) { | |
599 | return false; | |
600 | } | |
601 | ||
602 | return s.back().number(str, length); | |
603 | } | |
604 | bool StartArray() { | |
605 | if (s.empty()) { | |
606 | return false; | |
607 | } | |
608 | ||
609 | return s.back().array_start(); | |
610 | } | |
611 | bool EndArray(SizeType) { | |
612 | if (s.empty()) { | |
613 | return false; | |
614 | } | |
615 | ||
616 | return s.back().array_end(); | |
617 | } | |
618 | ||
619 | bool Default() { | |
620 | return false; | |
621 | } | |
622 | }; | |
623 | ||
624 | ||
625 | // I really despise this misfeature of C++. | |
626 | // | |
627 | bool ParseState::obj_end() { | |
628 | if (objecting) { | |
629 | objecting = false; | |
630 | if (!arraying) { | |
631 | pp->s.pop_back(); | |
632 | } else { | |
633 | reset(); | |
634 | } | |
635 | return true; | |
636 | } | |
637 | return false; | |
638 | } | |
639 | ||
640 | bool ParseState::key(const char* s, size_t l) { | |
641 | auto k = pp->tokens.lookup(s, l); | |
642 | ||
643 | if (!k) { | |
644 | if (w->kind == TokenKind::cond_op) { | |
645 | auto& t = pp->policy.statements.back(); | |
646 | pp->s.emplace_back(pp, cond_key); | |
647 | t.conditions.emplace_back(w->id, s, l); | |
648 | return true; | |
649 | } else { | |
650 | return false; | |
651 | } | |
652 | } | |
653 | ||
654 | // If the token we're going with belongs within the condition at the | |
655 | // top of the stack and we haven't already encountered it, push it | |
656 | // on the stack | |
657 | ||
658 | // Top | |
659 | if ((((w->id == TokenID::Top) && (k->kind == TokenKind::top)) || | |
660 | // Statement | |
661 | ((w->id == TokenID::Statement) && (k->kind == TokenKind::statement)) || | |
662 | ||
663 | /// Principal | |
664 | ((w->id == TokenID::Principal || w->id == TokenID::NotPrincipal) && | |
665 | (k->kind == TokenKind::princ_type))) && | |
666 | ||
667 | // Check that it hasn't been encountered. Note that this | |
668 | // conjoins with the run of disjunctions above. | |
669 | !pp->test(k->id)) { | |
670 | pp->set(k->id); | |
671 | pp->s.emplace_back(pp, k); | |
672 | return true; | |
673 | } else if ((w->id == TokenID::Condition) && | |
674 | (k->kind == TokenKind::cond_op)) { | |
675 | pp->s.emplace_back(pp, k); | |
676 | return true; | |
677 | } | |
678 | return false; | |
679 | } | |
680 | ||
681 | // I should just rewrite a few helper functions to use iterators, | |
682 | // which will make all of this ever so much nicer. | |
683 | static optional<Principal> parse_principal(CephContext* cct, TokenID t, | |
684 | string&& s) { | |
685 | // Wildcard! | |
686 | if ((t == TokenID::AWS) && (s == "*")) { | |
687 | return Principal::wildcard(); | |
688 | ||
689 | // Do nothing for now. | |
690 | } else if (t == TokenID::CanonicalUser) { | |
691 | ||
692 | // AWS ARNs | |
693 | } else if (t == TokenID::AWS) { | |
694 | auto a = ARN::parse(s); | |
695 | if (!a) { | |
696 | if (std::none_of(s.begin(), s.end(), | |
697 | [](const char& c) { | |
698 | return (c == ':') || (c == '/'); | |
699 | })) { | |
700 | // Since tenants are simply prefixes, there's no really good | |
701 | // way to see if one exists or not. So we return the thing and | |
702 | // let them try to match against it. | |
703 | return Principal::tenant(std::move(s)); | |
704 | } | |
705 | } | |
706 | ||
707 | if (a->resource == "root") { | |
708 | return Principal::tenant(std::move(a->account)); | |
709 | } | |
710 | ||
711 | static const char rx_str[] = "([^/]*)/(.*)"; | |
712 | static const regex rx(rx_str, sizeof(rx_str) - 1, | |
713 | ECMAScript | optimize); | |
714 | smatch match; | |
715 | if (regex_match(a->resource, match, rx)) { | |
716 | ceph_assert(match.size() == 2); | |
717 | ||
718 | if (match[1] == "user") { | |
719 | return Principal::user(std::move(a->account), | |
720 | match[2]); | |
721 | } | |
722 | ||
723 | if (match[1] == "role") { | |
724 | return Principal::role(std::move(a->account), | |
725 | match[2]); | |
726 | } | |
727 | } | |
728 | } | |
729 | ||
730 | ldout(cct, 0) << "Supplied principal is discarded: " << s << dendl; | |
731 | return boost::none; | |
732 | } | |
733 | ||
734 | bool ParseState::do_string(CephContext* cct, const char* s, size_t l) { | |
735 | auto k = pp->tokens.lookup(s, l); | |
736 | Policy& p = pp->policy; | |
737 | Statement* t = p.statements.empty() ? nullptr : &(p.statements.back()); | |
738 | ||
739 | // Top level! | |
740 | if ((w->id == TokenID::Version) && k && | |
741 | k->kind == TokenKind::version_key) { | |
742 | p.version = static_cast<Version>(k->specific); | |
743 | } else if (w->id == TokenID::Id) { | |
744 | p.id = string(s, l); | |
745 | ||
746 | // Statement | |
747 | ||
748 | } else if (w->id == TokenID::Sid) { | |
749 | t->sid.emplace(s, l); | |
750 | } else if ((w->id == TokenID::Effect) && | |
751 | k->kind == TokenKind::effect_key) { | |
752 | t->effect = static_cast<Effect>(k->specific); | |
753 | } else if (w->id == TokenID::Principal && s && *s == '*') { | |
754 | t->princ.emplace(Principal::wildcard()); | |
755 | } else if (w->id == TokenID::NotPrincipal && s && *s == '*') { | |
756 | t->noprinc.emplace(Principal::wildcard()); | |
757 | } else if ((w->id == TokenID::Action) || | |
758 | (w->id == TokenID::NotAction)) { | |
759 | for (auto& p : actpairs) { | |
760 | if (match({s, l}, p.name, MATCH_POLICY_ACTION)) { | |
761 | (w->id == TokenID::Action ? t->action : t->notaction) |= p.bit; | |
762 | } | |
763 | } | |
764 | } else if (w->id == TokenID::Resource || w->id == TokenID::NotResource) { | |
765 | auto a = ARN::parse({s, l}, true); | |
766 | // You can't specify resources for someone ELSE'S account. | |
767 | if (a && (a->account.empty() || a->account == pp->tenant || | |
768 | a->account == "*")) { | |
769 | if (a->account.empty() || a->account == "*") | |
770 | a->account = pp->tenant; | |
771 | (w->id == TokenID::Resource ? t->resource : t->notresource) | |
772 | .emplace(std::move(*a)); | |
773 | } | |
774 | else | |
775 | ldout(cct, 0) << "Supplied resource is discarded: " << string(s, l) | |
776 | << dendl; | |
777 | } else if (w->kind == TokenKind::cond_key) { | |
778 | auto& t = pp->policy.statements.back(); | |
779 | t.conditions.back().vals.emplace_back(s, l); | |
780 | ||
781 | // Principals | |
782 | ||
783 | } else if (w->kind == TokenKind::princ_type) { | |
784 | ceph_assert(pp->s.size() > 1); | |
785 | auto& pri = pp->s[pp->s.size() - 2].w->id == TokenID::Principal ? | |
786 | t->princ : t->noprinc; | |
787 | ||
788 | auto o = parse_principal(pp->cct, w->id, string(s, l)); | |
789 | if (o) | |
790 | pri.emplace(std::move(*o)); | |
791 | ||
792 | // Failure | |
793 | ||
794 | } else { | |
795 | return false; | |
796 | } | |
797 | ||
798 | if (!arraying) { | |
799 | pp->s.pop_back(); | |
800 | } | |
801 | ||
802 | return true; | |
803 | } | |
804 | ||
805 | bool ParseState::number(const char* s, size_t l) { | |
806 | // Top level! | |
807 | if (w->kind == TokenKind::cond_key) { | |
808 | auto& t = pp->policy.statements.back(); | |
809 | t.conditions.back().vals.emplace_back(s, l); | |
810 | ||
811 | // Failure | |
812 | ||
813 | } else { | |
814 | return false; | |
815 | } | |
816 | ||
817 | if (!arraying) { | |
818 | pp->s.pop_back(); | |
819 | } | |
820 | ||
821 | return true; | |
822 | } | |
823 | ||
824 | void ParseState::reset() { | |
825 | pp->reset({TokenID::Sid, TokenID::Effect, TokenID::Principal, | |
826 | TokenID::NotPrincipal, TokenID::Action, TokenID::NotAction, | |
827 | TokenID::Resource, TokenID::NotResource, TokenID::Condition}); | |
828 | } | |
829 | ||
830 | bool ParseState::obj_start() { | |
831 | if (w->objectable && !objecting) { | |
832 | objecting = true; | |
833 | if (w->id == TokenID::Statement) { | |
834 | pp->policy.statements.push_back({}); | |
835 | } | |
836 | ||
837 | return true; | |
838 | } | |
839 | ||
840 | return false; | |
841 | } | |
842 | ||
843 | ||
844 | bool ParseState::array_end() { | |
845 | if (arraying && !objecting) { | |
846 | pp->s.pop_back(); | |
847 | return true; | |
848 | } | |
849 | ||
850 | return false; | |
851 | } | |
852 | ||
853 | ostream& operator <<(ostream& m, const MaskedIP& ip) { | |
854 | // I have a theory about why std::bitset is the way it is. | |
855 | if (ip.v6) { | |
856 | for (int i = 15; i >= 0; --i) { | |
857 | uint8_t b = 0; | |
858 | for (int j = 7; j >= 0; --j) { | |
859 | b |= (ip.addr[(i * 8) + j] << j); | |
860 | } | |
861 | m << hex << b; | |
862 | if (i != 0) { | |
863 | m << "::"; | |
864 | } | |
865 | } | |
866 | } else { | |
867 | // It involves Satan. | |
868 | for (int i = 3; i >= 0; --i) { | |
869 | uint8_t b = 0; | |
870 | for (int j = 7; j >= 0; --j) { | |
871 | b |= (ip.addr[(i * 8) + j] << j); | |
872 | } | |
873 | m << b; | |
874 | if (i != 0) { | |
875 | m << "."; | |
876 | } | |
877 | } | |
878 | } | |
879 | m << "/" << ip.prefix; | |
880 | // It would explain a lot | |
881 | return m; | |
882 | } | |
883 | ||
884 | string to_string(const MaskedIP& m) { | |
885 | stringstream ss; | |
886 | ss << m; | |
887 | return ss.str(); | |
888 | } | |
889 | ||
890 | bool Condition::eval(const Environment& env) const { | |
891 | auto i = env.find(key); | |
892 | if (op == TokenID::Null) { | |
893 | return i == env.end() ? true : false; | |
894 | } | |
895 | ||
896 | if (i == env.end()) { | |
897 | return false; | |
898 | } | |
899 | const auto& s = i->second; | |
900 | ||
901 | switch (op) { | |
902 | // String! | |
903 | case TokenID::StringEquals: | |
904 | return orrible(std::equal_to<std::string>(), s, vals); | |
905 | ||
906 | case TokenID::StringNotEquals: | |
907 | return orrible(std::not2(std::equal_to<std::string>()), | |
908 | s, vals); | |
909 | ||
910 | case TokenID::StringEqualsIgnoreCase: | |
911 | return orrible(ci_equal_to(), s, vals); | |
912 | ||
913 | case TokenID::StringNotEqualsIgnoreCase: | |
914 | return orrible(std::not2(ci_equal_to()), s, vals); | |
915 | ||
916 | // Implement actual StringLike with wildcarding later | |
917 | case TokenID::StringLike: | |
918 | return orrible(std::equal_to<std::string>(), s, vals); | |
919 | case TokenID::StringNotLike: | |
920 | return orrible(std::not2(std::equal_to<std::string>()), | |
921 | s, vals); | |
922 | ||
923 | // Numeric | |
924 | case TokenID::NumericEquals: | |
925 | return shortible(std::equal_to<double>(), as_number, s, vals); | |
926 | ||
927 | case TokenID::NumericNotEquals: | |
928 | return shortible(std::not2(std::equal_to<double>()), | |
929 | as_number, s, vals); | |
930 | ||
931 | ||
932 | case TokenID::NumericLessThan: | |
933 | return shortible(std::less<double>(), as_number, s, vals); | |
934 | ||
935 | ||
936 | case TokenID::NumericLessThanEquals: | |
937 | return shortible(std::less_equal<double>(), as_number, s, vals); | |
938 | ||
939 | case TokenID::NumericGreaterThan: | |
940 | return shortible(std::greater<double>(), as_number, s, vals); | |
941 | ||
942 | case TokenID::NumericGreaterThanEquals: | |
943 | return shortible(std::greater_equal<double>(), as_number, s, vals); | |
944 | ||
945 | // Date! | |
946 | case TokenID::DateEquals: | |
947 | return shortible(std::equal_to<ceph::real_time>(), as_date, s, vals); | |
948 | ||
949 | case TokenID::DateNotEquals: | |
950 | return shortible(std::not2(std::equal_to<ceph::real_time>()), | |
951 | as_date, s, vals); | |
952 | ||
953 | case TokenID::DateLessThan: | |
954 | return shortible(std::less<ceph::real_time>(), as_date, s, vals); | |
955 | ||
956 | ||
957 | case TokenID::DateLessThanEquals: | |
958 | return shortible(std::less_equal<ceph::real_time>(), as_date, s, vals); | |
959 | ||
960 | case TokenID::DateGreaterThan: | |
961 | return shortible(std::greater<ceph::real_time>(), as_date, s, vals); | |
962 | ||
963 | case TokenID::DateGreaterThanEquals: | |
964 | return shortible(std::greater_equal<ceph::real_time>(), as_date, s, | |
965 | vals); | |
966 | ||
967 | // Bool! | |
968 | case TokenID::Bool: | |
969 | return shortible(std::equal_to<bool>(), as_bool, s, vals); | |
970 | ||
971 | // Binary! | |
972 | case TokenID::BinaryEquals: | |
973 | return shortible(std::equal_to<ceph::bufferlist>(), as_binary, s, | |
974 | vals); | |
975 | ||
976 | // IP Address! | |
977 | case TokenID::IpAddress: | |
978 | return shortible(std::equal_to<MaskedIP>(), as_network, s, vals); | |
979 | ||
980 | case TokenID::NotIpAddress: | |
981 | return shortible(std::not2(std::equal_to<MaskedIP>()), as_network, s, | |
982 | vals); | |
983 | ||
984 | #if 0 | |
985 | // Amazon Resource Names! (Does S3 need this?) | |
986 | TokenID::ArnEquals, TokenID::ArnNotEquals, TokenID::ArnLike, | |
987 | TokenID::ArnNotLike, | |
988 | #endif | |
989 | ||
990 | default: | |
991 | return false; | |
992 | } | |
993 | } | |
994 | ||
995 | optional<MaskedIP> Condition::as_network(const string& s) { | |
996 | MaskedIP m; | |
997 | if (s.empty()) { | |
998 | return none; | |
999 | } | |
1000 | ||
1001 | m.v6 = s.find(':'); | |
1002 | auto slash = s.find('/'); | |
1003 | if (slash == string::npos) { | |
1004 | m.prefix = m.v6 ? 128 : 32; | |
1005 | } else { | |
1006 | char* end = 0; | |
1007 | m.prefix = strtoul(s.data() + slash + 1, &end, 10); | |
1008 | if (*end != 0 || (m.v6 && m.prefix > 128) || | |
1009 | (!m.v6 && m.prefix > 32)) { | |
1010 | return none; | |
1011 | } | |
1012 | } | |
1013 | ||
1014 | string t; | |
1015 | auto p = &s; | |
1016 | ||
1017 | if (slash != string::npos) { | |
1018 | t.assign(s, 0, slash); | |
1019 | p = &t; | |
1020 | } | |
1021 | ||
1022 | if (m.v6) { | |
1023 | struct sockaddr_in6 a; | |
1024 | if (inet_pton(AF_INET6, p->c_str(), static_cast<void*>(&a)) != 1) { | |
1025 | return none; | |
1026 | } | |
1027 | ||
1028 | m.addr |= Address(a.sin6_addr.s6_addr[0]) << 0; | |
1029 | m.addr |= Address(a.sin6_addr.s6_addr[1]) << 8; | |
1030 | m.addr |= Address(a.sin6_addr.s6_addr[2]) << 16; | |
1031 | m.addr |= Address(a.sin6_addr.s6_addr[3]) << 24; | |
1032 | m.addr |= Address(a.sin6_addr.s6_addr[4]) << 32; | |
1033 | m.addr |= Address(a.sin6_addr.s6_addr[5]) << 40; | |
1034 | m.addr |= Address(a.sin6_addr.s6_addr[6]) << 48; | |
1035 | m.addr |= Address(a.sin6_addr.s6_addr[7]) << 56; | |
1036 | m.addr |= Address(a.sin6_addr.s6_addr[8]) << 64; | |
1037 | m.addr |= Address(a.sin6_addr.s6_addr[9]) << 72; | |
1038 | m.addr |= Address(a.sin6_addr.s6_addr[10]) << 80; | |
1039 | m.addr |= Address(a.sin6_addr.s6_addr[11]) << 88; | |
1040 | m.addr |= Address(a.sin6_addr.s6_addr[12]) << 96; | |
1041 | m.addr |= Address(a.sin6_addr.s6_addr[13]) << 104; | |
1042 | m.addr |= Address(a.sin6_addr.s6_addr[14]) << 112; | |
1043 | m.addr |= Address(a.sin6_addr.s6_addr[15]) << 120; | |
1044 | } else { | |
1045 | struct sockaddr_in a; | |
1046 | if (inet_pton(AF_INET, p->c_str(), static_cast<void*>(&a)) != 1) { | |
1047 | return none; | |
1048 | } | |
1049 | m.addr = ntohl(a.sin_addr.s_addr); | |
1050 | } | |
1051 | ||
1052 | return none; | |
1053 | } | |
1054 | ||
1055 | namespace { | |
1056 | const char* condop_string(const TokenID t) { | |
1057 | switch (t) { | |
1058 | case TokenID::StringEquals: | |
1059 | return "StringEquals"; | |
1060 | ||
1061 | case TokenID::StringNotEquals: | |
1062 | return "StringNotEquals"; | |
1063 | ||
1064 | case TokenID::StringEqualsIgnoreCase: | |
1065 | return "StringEqualsIgnoreCase"; | |
1066 | ||
1067 | case TokenID::StringNotEqualsIgnoreCase: | |
1068 | return "StringNotEqualsIgnoreCase"; | |
1069 | ||
1070 | case TokenID::StringLike: | |
1071 | return "StringLike"; | |
1072 | ||
1073 | case TokenID::StringNotLike: | |
1074 | return "StringNotLike"; | |
1075 | ||
1076 | // Numeric! | |
1077 | case TokenID::NumericEquals: | |
1078 | return "NumericEquals"; | |
1079 | ||
1080 | case TokenID::NumericNotEquals: | |
1081 | return "NumericNotEquals"; | |
1082 | ||
1083 | case TokenID::NumericLessThan: | |
1084 | return "NumericLessThan"; | |
1085 | ||
1086 | case TokenID::NumericLessThanEquals: | |
1087 | return "NumericLessThanEquals"; | |
1088 | ||
1089 | case TokenID::NumericGreaterThan: | |
1090 | return "NumericGreaterThan"; | |
1091 | ||
1092 | case TokenID::NumericGreaterThanEquals: | |
1093 | return "NumericGreaterThanEquals"; | |
1094 | ||
1095 | case TokenID::DateEquals: | |
1096 | return "DateEquals"; | |
1097 | ||
1098 | case TokenID::DateNotEquals: | |
1099 | return "DateNotEquals"; | |
1100 | ||
1101 | case TokenID::DateLessThan: | |
1102 | return "DateLessThan"; | |
1103 | ||
1104 | case TokenID::DateLessThanEquals: | |
1105 | return "DateLessThanEquals"; | |
1106 | ||
1107 | case TokenID::DateGreaterThan: | |
1108 | return "DateGreaterThan"; | |
1109 | ||
1110 | case TokenID::DateGreaterThanEquals: | |
1111 | return "DateGreaterThanEquals"; | |
1112 | ||
1113 | case TokenID::Bool: | |
1114 | return "Bool"; | |
1115 | ||
1116 | case TokenID::BinaryEquals: | |
1117 | return "BinaryEquals"; | |
1118 | ||
1119 | case TokenID::IpAddress: | |
1120 | return "case TokenID::IpAddress"; | |
1121 | ||
1122 | case TokenID::NotIpAddress: | |
1123 | return "NotIpAddress"; | |
1124 | ||
1125 | case TokenID::ArnEquals: | |
1126 | return "ArnEquals"; | |
1127 | ||
1128 | case TokenID::ArnNotEquals: | |
1129 | return "ArnNotEquals"; | |
1130 | ||
1131 | case TokenID::ArnLike: | |
1132 | return "ArnLike"; | |
1133 | ||
1134 | case TokenID::ArnNotLike: | |
1135 | return "ArnNotLike"; | |
1136 | ||
1137 | case TokenID::Null: | |
1138 | return "Null"; | |
1139 | ||
1140 | default: | |
1141 | return "InvalidConditionOperator"; | |
1142 | } | |
1143 | } | |
1144 | ||
1145 | template<typename Iterator> | |
1146 | ostream& print_array(ostream& m, Iterator begin, Iterator end) { | |
1147 | if (begin == end) { | |
1148 | m << "["; | |
1149 | } else { | |
1150 | auto beforelast = end - 1; | |
1151 | m << "[ "; | |
1152 | for (auto i = begin; i != end; ++i) { | |
1153 | m << *i; | |
1154 | if (i != beforelast) { | |
1155 | m << ", "; | |
1156 | } else { | |
1157 | m << " "; | |
1158 | } | |
1159 | } | |
1160 | } | |
1161 | m << "]"; | |
1162 | return m; | |
1163 | } | |
1164 | } | |
1165 | ||
1166 | ostream& operator <<(ostream& m, const Condition& c) { | |
1167 | m << "{ " << condop_string(c.op); | |
1168 | if (c.ifexists) { | |
1169 | m << "IfExists"; | |
1170 | } | |
1171 | m << ": { " << c.key; | |
1172 | print_array(m, c.vals.cbegin(), c.vals.cend()); | |
1173 | return m << "}"; | |
1174 | } | |
1175 | ||
1176 | string to_string(const Condition& c) { | |
1177 | stringstream ss; | |
1178 | ss << c; | |
1179 | return ss.str(); | |
1180 | } | |
1181 | ||
1182 | Effect Statement::eval(const Environment& e, | |
1183 | optional<const rgw::auth::Identity&> ida, | |
1184 | uint64_t act, const ARN& res) const { | |
1185 | if (ida && (!ida->is_identity(princ) || ida->is_identity(noprinc))) { | |
1186 | return Effect::Pass; | |
1187 | } | |
1188 | ||
1189 | ||
1190 | if (!std::any_of(resource.begin(), resource.end(), | |
1191 | [&res](const ARN& pattern) { | |
1192 | return pattern.match(res); | |
1193 | }) || | |
1194 | (std::any_of(notresource.begin(), notresource.end(), | |
1195 | [&res](const ARN& pattern) { | |
1196 | return pattern.match(res); | |
1197 | }))) { | |
1198 | return Effect::Pass; | |
1199 | } | |
1200 | ||
1201 | if (!(action & act) || (notaction & act)) { | |
1202 | return Effect::Pass; | |
1203 | } | |
1204 | ||
1205 | if (std::all_of(conditions.begin(), | |
1206 | conditions.end(), | |
1207 | [&e](const Condition& c) { return c.eval(e);})) { | |
1208 | return effect; | |
1209 | } | |
1210 | ||
1211 | return Effect::Pass; | |
1212 | } | |
1213 | ||
1214 | namespace { | |
1215 | const char* action_bit_string(uint64_t action) { | |
1216 | switch (action) { | |
1217 | case s3GetObject: | |
1218 | return "s3:GetObject"; | |
1219 | ||
1220 | case s3GetObjectVersion: | |
1221 | return "s3:GetObjectVersion"; | |
1222 | ||
1223 | case s3PutObject: | |
1224 | return "s3:PutObject"; | |
1225 | ||
1226 | case s3GetObjectAcl: | |
1227 | return "s3:GetObjectAcl"; | |
1228 | ||
1229 | case s3GetObjectVersionAcl: | |
1230 | return "s3:GetObjectVersionAcl"; | |
1231 | ||
1232 | case s3PutObjectAcl: | |
1233 | return "s3:PutObjectAcl"; | |
1234 | ||
1235 | case s3PutObjectVersionAcl: | |
1236 | return "s3:PutObjectVersionAcl"; | |
1237 | ||
1238 | case s3DeleteObject: | |
1239 | return "s3:DeleteObject"; | |
1240 | ||
1241 | case s3DeleteObjectVersion: | |
1242 | return "s3:DeleteObjectVersion"; | |
1243 | ||
1244 | case s3ListMultipartUploadParts: | |
1245 | return "s3:ListMultipartUploadParts"; | |
1246 | ||
1247 | case s3AbortMultipartUpload: | |
1248 | return "s3:AbortMultipartUpload"; | |
1249 | ||
1250 | case s3GetObjectTorrent: | |
1251 | return "s3:GetObjectTorrent"; | |
1252 | ||
1253 | case s3GetObjectVersionTorrent: | |
1254 | return "s3:GetObjectVersionTorrent"; | |
1255 | ||
1256 | case s3RestoreObject: | |
1257 | return "s3:RestoreObject"; | |
1258 | ||
1259 | case s3CreateBucket: | |
1260 | return "s3:CreateBucket"; | |
1261 | ||
1262 | case s3DeleteBucket: | |
1263 | return "s3:DeleteBucket"; | |
1264 | ||
1265 | case s3ListBucket: | |
1266 | return "s3:ListBucket"; | |
1267 | ||
1268 | case s3ListBucketVersions: | |
1269 | return "s3:ListBucketVersions"; | |
1270 | case s3ListAllMyBuckets: | |
1271 | return "s3:ListAllMyBuckets"; | |
1272 | ||
1273 | case s3ListBucketMultiPartUploads: | |
1274 | return "s3:ListBucketMultiPartUploads"; | |
1275 | ||
1276 | case s3GetAccelerateConfiguration: | |
1277 | return "s3:GetAccelerateConfiguration"; | |
1278 | ||
1279 | case s3PutAccelerateConfiguration: | |
1280 | return "s3:PutAccelerateConfiguration"; | |
1281 | ||
1282 | case s3GetBucketAcl: | |
1283 | return "s3:GetBucketAcl"; | |
1284 | ||
1285 | case s3PutBucketAcl: | |
1286 | return "s3:PutBucketAcl"; | |
1287 | ||
1288 | case s3GetBucketCORS: | |
1289 | return "s3:GetBucketCORS"; | |
1290 | ||
1291 | case s3PutBucketCORS: | |
1292 | return "s3:PutBucketCORS"; | |
1293 | ||
1294 | case s3GetBucketVersioning: | |
1295 | return "s3:GetBucketVersioning"; | |
1296 | ||
1297 | case s3PutBucketVersioning: | |
1298 | return "s3:PutBucketVersioning"; | |
1299 | ||
1300 | case s3GetBucketRequestPayment: | |
1301 | return "s3:GetBucketRequestPayment"; | |
1302 | ||
1303 | case s3PutBucketRequestPayment: | |
1304 | return "s3:PutBucketRequestPayment"; | |
1305 | ||
1306 | case s3GetBucketLocation: | |
1307 | return "s3:GetBucketLocation"; | |
1308 | ||
1309 | case s3GetBucketPolicy: | |
1310 | return "s3:GetBucketPolicy"; | |
1311 | ||
1312 | case s3DeleteBucketPolicy: | |
1313 | return "s3:DeleteBucketPolicy"; | |
1314 | ||
1315 | case s3PutBucketPolicy: | |
1316 | return "s3:PutBucketPolicy"; | |
1317 | ||
1318 | case s3GetBucketNotification: | |
1319 | return "s3:GetBucketNotification"; | |
1320 | ||
1321 | case s3PutBucketNotification: | |
1322 | return "s3:PutBucketNotification"; | |
1323 | ||
1324 | case s3GetBucketLogging: | |
1325 | return "s3:GetBucketLogging"; | |
1326 | ||
1327 | case s3PutBucketLogging: | |
1328 | return "s3:PutBucketLogging"; | |
1329 | ||
1330 | case s3GetBucketTagging: | |
1331 | return "s3:GetBucketTagging"; | |
1332 | ||
1333 | case s3PutBucketTagging: | |
1334 | return "s3:PutBucketTagging"; | |
1335 | ||
1336 | case s3GetBucketWebsite: | |
1337 | return "s3:GetBucketWebsite"; | |
1338 | ||
1339 | case s3PutBucketWebsite: | |
1340 | return "s3:PutBucketWebsite"; | |
1341 | ||
1342 | case s3DeleteBucketWebsite: | |
1343 | return "s3:DeleteBucketWebsite"; | |
1344 | ||
1345 | case s3GetLifecycleConfiguration: | |
1346 | return "s3:GetLifecycleConfiguration"; | |
1347 | ||
1348 | case s3PutLifecycleConfiguration: | |
1349 | return "s3:PutLifecycleConfiguration"; | |
1350 | ||
1351 | case s3PutReplicationConfiguration: | |
1352 | return "s3:PutReplicationConfiguration"; | |
1353 | ||
1354 | case s3GetReplicationConfiguration: | |
1355 | return "s3:GetReplicationConfiguration"; | |
1356 | ||
1357 | case s3DeleteReplicationConfiguration: | |
1358 | return "s3:DeleteReplicationConfiguration"; | |
1359 | } | |
1360 | return "s3Invalid"; | |
1361 | } | |
1362 | ||
1363 | ostream& print_actions(ostream& m, const uint64_t a) { | |
1364 | bool begun = false; | |
1365 | m << "[ "; | |
1366 | for (auto i = 0U; i < s3Count; ++i) { | |
1367 | if (a & (1 << i)) { | |
1368 | if (begun) { | |
1369 | m << ", "; | |
1370 | } else { | |
1371 | begun = true; | |
1372 | } | |
1373 | m << action_bit_string(1 << i); | |
1374 | } | |
1375 | } | |
1376 | if (begun) { | |
1377 | m << " ]"; | |
1378 | } else { | |
1379 | m << "]"; | |
1380 | } | |
1381 | return m; | |
1382 | } | |
1383 | } | |
1384 | ||
1385 | ostream& operator <<(ostream& m, const Statement& s) { | |
1386 | m << "{ "; | |
1387 | if (s.sid) { | |
1388 | m << "Sid: " << *s.sid << ", "; | |
1389 | } | |
1390 | if (!s.princ.empty()) { | |
1391 | m << "Principal: "; | |
1392 | print_array(m, s.princ.cbegin(), s.princ.cend()); | |
1393 | m << ", "; | |
1394 | } | |
1395 | if (!s.noprinc.empty()) { | |
1396 | m << "NotPrincipal: "; | |
1397 | print_array(m, s.noprinc.cbegin(), s.noprinc.cend()); | |
1398 | m << ", "; | |
1399 | } | |
1400 | ||
1401 | m << "Effect: " << | |
1402 | (s.effect == Effect::Allow ? | |
1403 | (const char*) "Allow" : | |
1404 | (const char*) "Deny"); | |
1405 | ||
1406 | if (s.action || s.notaction || !s.resource.empty() || | |
1407 | !s.notresource.empty() || !s.conditions.empty()) { | |
1408 | m << ", "; | |
1409 | } | |
1410 | ||
1411 | if (s.action) { | |
1412 | m << "Action: "; | |
1413 | print_actions(m, s.action); | |
1414 | ||
1415 | if (s.notaction || !s.resource.empty() || | |
1416 | !s.notresource.empty() || !s.conditions.empty()) { | |
1417 | m << ", "; | |
1418 | } | |
1419 | } | |
1420 | ||
1421 | if (s.notaction) { | |
1422 | m << "NotAction: "; | |
1423 | print_actions(m, s.notaction); | |
1424 | ||
1425 | if (!s.resource.empty() || !s.notresource.empty() || | |
1426 | !s.conditions.empty()) { | |
1427 | m << ", "; | |
1428 | } | |
1429 | } | |
1430 | ||
1431 | if (!s.resource.empty()) { | |
1432 | m << "Resource: "; | |
1433 | print_array(m, s.resource.cbegin(), s.resource.cend()); | |
1434 | ||
1435 | if (!s.notresource.empty() || !s.conditions.empty()) { | |
1436 | m << ", "; | |
1437 | } | |
1438 | } | |
1439 | ||
1440 | if (!s.notresource.empty()) { | |
1441 | m << "NotResource: "; | |
1442 | print_array(m, s.notresource.cbegin(), s.notresource.cend()); | |
1443 | ||
1444 | if (!s.conditions.empty()) { | |
1445 | m << ", "; | |
1446 | } | |
1447 | } | |
1448 | ||
1449 | if (!s.conditions.empty()) { | |
1450 | m << "Condition: "; | |
1451 | print_array(m, s.conditions.cbegin(), s.conditions.cend()); | |
1452 | } | |
1453 | ||
1454 | return m << " }"; | |
1455 | } | |
1456 | ||
1457 | string to_string(const Statement& s) { | |
1458 | stringstream m; | |
1459 | m << s; | |
1460 | return m.str(); | |
1461 | } | |
1462 | ||
1463 | Policy::Policy(CephContext* cct, const string& tenant, | |
1464 | const bufferlist& _text) | |
1465 | : text(_text.to_str()) { | |
1466 | StringStream ss(text.data()); | |
1467 | PolicyParser pp(cct, tenant, *this); | |
1468 | auto pr = Reader{}.Parse<kParseNumbersAsStringsFlag | | |
1469 | kParseCommentsFlag>(ss, pp); | |
1470 | if (!pr) { | |
1471 | throw PolicyParseException(std::move(pr)); | |
1472 | } | |
1473 | } | |
1474 | ||
1475 | Effect Policy::eval(const Environment& e, | |
1476 | optional<const rgw::auth::Identity&> ida, | |
1477 | std::uint64_t action, const ARN& resource) const { | |
1478 | auto allowed = false; | |
1479 | for (auto& s : statements) { | |
1480 | auto g = s.eval(e, ida, action, resource); | |
1481 | if (g == Effect::Deny) { | |
1482 | return g; | |
1483 | } else if (g == Effect::Allow) { | |
1484 | allowed = true; | |
1485 | } | |
1486 | } | |
1487 | return allowed ? Effect::Allow : Effect::Pass; | |
1488 | } | |
1489 | ||
1490 | ostream& operator <<(ostream& m, const Policy& p) { | |
1491 | m << "{ Version: " | |
1492 | << (p.version == Version::v2008_10_17 ? "2008-10-17" : "2012-10-17"); | |
1493 | ||
1494 | if (p.id || !p.statements.empty()) { | |
1495 | m << ", "; | |
1496 | } | |
1497 | ||
1498 | if (p.id) { | |
1499 | m << "Id: " << *p.id; | |
1500 | if (!p.statements.empty()) { | |
1501 | m << ", "; | |
1502 | } | |
1503 | } | |
1504 | ||
1505 | if (!p.statements.empty()) { | |
1506 | m << "Statements: "; | |
1507 | print_array(m, p.statements.cbegin(), p.statements.cend()); | |
1508 | m << ", "; | |
1509 | } | |
1510 | return m << " }"; | |
1511 | } | |
1512 | ||
1513 | string to_string(const Policy& p) { | |
1514 | stringstream s; | |
1515 | s << p; | |
1516 | return s.str(); | |
1517 | } | |
1518 | ||
1519 | } | |
1520 | } |