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7c673cae FG |
1 | // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- |
2 | // vim: ts=8 sw=2 smarttab | |
3 | ||
31f18b77 | 4 | #include <algorithm> |
7c673cae | 5 | #include <map> |
31f18b77 | 6 | #include <iterator> |
7c673cae | 7 | #include <string> |
31f18b77 | 8 | #include <vector> |
7c673cae FG |
9 | |
10 | #include "common/armor.h" | |
11 | #include "common/utf8.h" | |
31f18b77 | 12 | #include "rgw_auth_s3.h" |
7c673cae FG |
13 | #include "rgw_common.h" |
14 | #include "rgw_client_io.h" | |
15 | #include "rgw_rest.h" | |
16 | #include "rgw_crypt_sanitize.h" | |
31f18b77 FG |
17 | |
18 | #include <boost/container/small_vector.hpp> | |
19 | #include <boost/utility/string_view.hpp> | |
20 | ||
7c673cae FG |
21 | #define dout_context g_ceph_context |
22 | #define dout_subsys ceph_subsys_rgw | |
23 | ||
24 | static const auto signed_subresources = { | |
25 | "acl", | |
26 | "cors", | |
27 | "delete", | |
28 | "lifecycle", | |
29 | "location", | |
30 | "logging", | |
31 | "notification", | |
32 | "partNumber", | |
33 | "policy", | |
34 | "requestPayment", | |
35 | "response-cache-control", | |
36 | "response-content-disposition", | |
37 | "response-content-encoding", | |
38 | "response-content-language", | |
39 | "response-content-type", | |
40 | "response-expires", | |
224ce89b | 41 | "tagging", |
7c673cae FG |
42 | "torrent", |
43 | "uploadId", | |
44 | "uploads", | |
7c673cae FG |
45 | "versionId", |
46 | "versioning", | |
47 | "versions", | |
48 | "website" | |
49 | }; | |
50 | ||
51 | /* | |
52 | * ?get the canonical amazon-style header for something? | |
53 | */ | |
54 | ||
55 | static std::string | |
56 | get_canon_amz_hdr(const std::map<std::string, std::string>& meta_map) | |
57 | { | |
58 | std::string dest; | |
59 | ||
60 | for (const auto& kv : meta_map) { | |
61 | dest.append(kv.first); | |
62 | dest.append(":"); | |
63 | dest.append(kv.second); | |
64 | dest.append("\n"); | |
65 | } | |
66 | ||
67 | return dest; | |
68 | } | |
69 | ||
70 | /* | |
71 | * ?get the canonical representation of the object's location | |
72 | */ | |
73 | static std::string | |
74 | get_canon_resource(const char* const request_uri, | |
75 | const std::map<std::string, std::string>& sub_resources) | |
76 | { | |
77 | std::string dest; | |
78 | ||
79 | if (request_uri) { | |
80 | dest.append(request_uri); | |
81 | } | |
82 | ||
83 | bool initial = true; | |
84 | for (const auto& subresource : signed_subresources) { | |
85 | const auto iter = sub_resources.find(subresource); | |
86 | if (iter == std::end(sub_resources)) { | |
87 | continue; | |
88 | } | |
89 | ||
90 | if (initial) { | |
91 | dest.append("?"); | |
92 | initial = false; | |
93 | } else { | |
94 | dest.append("&"); | |
95 | } | |
96 | ||
97 | dest.append(iter->first); | |
98 | if (! iter->second.empty()) { | |
99 | dest.append("="); | |
100 | dest.append(iter->second); | |
101 | } | |
102 | } | |
103 | ||
104 | dout(10) << "get_canon_resource(): dest=" << dest << dendl; | |
105 | return dest; | |
106 | } | |
107 | ||
108 | /* | |
109 | * get the header authentication information required to | |
110 | * compute a request's signature | |
111 | */ | |
112 | void rgw_create_s3_canonical_header( | |
113 | const char* const method, | |
114 | const char* const content_md5, | |
115 | const char* const content_type, | |
116 | const char* const date, | |
117 | const std::map<std::string, std::string>& meta_map, | |
118 | const char* const request_uri, | |
119 | const std::map<std::string, std::string>& sub_resources, | |
120 | std::string& dest_str) | |
121 | { | |
122 | std::string dest; | |
123 | ||
124 | if (method) { | |
125 | dest = method; | |
126 | } | |
127 | dest.append("\n"); | |
128 | ||
129 | if (content_md5) { | |
130 | dest.append(content_md5); | |
131 | } | |
132 | dest.append("\n"); | |
133 | ||
134 | if (content_type) { | |
135 | dest.append(content_type); | |
136 | } | |
137 | dest.append("\n"); | |
138 | ||
139 | if (date) { | |
140 | dest.append(date); | |
141 | } | |
142 | dest.append("\n"); | |
143 | ||
144 | dest.append(get_canon_amz_hdr(meta_map)); | |
145 | dest.append(get_canon_resource(request_uri, sub_resources)); | |
146 | ||
147 | dest_str = dest; | |
148 | } | |
149 | ||
7c673cae FG |
150 | static inline bool is_base64_for_content_md5(unsigned char c) { |
151 | return (isalnum(c) || isspace(c) || (c == '+') || (c == '/') || (c == '=')); | |
152 | } | |
153 | ||
154 | /* | |
155 | * get the header authentication information required to | |
156 | * compute a request's signature | |
157 | */ | |
158 | bool rgw_create_s3_canonical_header(const req_info& info, | |
159 | utime_t* const header_time, | |
160 | std::string& dest, | |
161 | const bool qsr) | |
162 | { | |
163 | const char* const content_md5 = info.env->get("HTTP_CONTENT_MD5"); | |
164 | if (content_md5) { | |
165 | for (const char *p = content_md5; *p; p++) { | |
166 | if (!is_base64_for_content_md5(*p)) { | |
167 | dout(0) << "NOTICE: bad content-md5 provided (not base64)," | |
168 | << " aborting request p=" << *p << " " << (int)*p << dendl; | |
169 | return false; | |
170 | } | |
171 | } | |
172 | } | |
173 | ||
174 | const char *content_type = info.env->get("CONTENT_TYPE"); | |
175 | ||
176 | std::string date; | |
177 | if (qsr) { | |
178 | date = info.args.get("Expires"); | |
179 | } else { | |
224ce89b | 180 | const char *str = info.env->get("HTTP_X_AMZ_DATE"); |
7c673cae | 181 | const char *req_date = str; |
224ce89b WB |
182 | if (str == NULL) { |
183 | req_date = info.env->get("HTTP_DATE"); | |
7c673cae FG |
184 | if (!req_date) { |
185 | dout(0) << "NOTICE: missing date for auth header" << dendl; | |
186 | return false; | |
187 | } | |
224ce89b | 188 | date = req_date; |
7c673cae FG |
189 | } |
190 | ||
191 | if (header_time) { | |
192 | struct tm t; | |
193 | if (!parse_rfc2616(req_date, &t)) { | |
194 | dout(0) << "NOTICE: failed to parse date for auth header" << dendl; | |
195 | return false; | |
196 | } | |
197 | if (t.tm_year < 70) { | |
198 | dout(0) << "NOTICE: bad date (predates epoch): " << req_date << dendl; | |
199 | return false; | |
200 | } | |
201 | *header_time = utime_t(internal_timegm(&t), 0); | |
202 | } | |
203 | } | |
204 | ||
205 | const auto& meta_map = info.x_meta_map; | |
206 | const auto& sub_resources = info.args.get_sub_resources(); | |
207 | ||
208 | std::string request_uri; | |
209 | if (info.effective_uri.empty()) { | |
210 | request_uri = info.request_uri; | |
211 | } else { | |
212 | request_uri = info.effective_uri; | |
213 | } | |
214 | ||
215 | rgw_create_s3_canonical_header(info.method, content_md5, content_type, | |
216 | date.c_str(), meta_map, request_uri.c_str(), | |
217 | sub_resources, dest); | |
218 | return true; | |
219 | } | |
220 | ||
31f18b77 FG |
221 | |
222 | namespace rgw { | |
223 | namespace auth { | |
224 | namespace s3 { | |
225 | ||
226 | /* FIXME(rzarzynski): duplicated from rgw_rest_s3.h. */ | |
227 | #define RGW_AUTH_GRACE_MINS 15 | |
228 | ||
229 | static inline int parse_v4_query_string(const req_info& info, /* in */ | |
230 | boost::string_view& credential, /* out */ | |
231 | boost::string_view& signedheaders, /* out */ | |
232 | boost::string_view& signature, /* out */ | |
233 | boost::string_view& date) /* out */ | |
7c673cae | 234 | { |
31f18b77 | 235 | /* auth ships with req params ... */ |
7c673cae | 236 | |
31f18b77 FG |
237 | /* look for required params */ |
238 | credential = info.args.get("X-Amz-Credential"); | |
239 | if (credential.size() == 0) { | |
240 | return -EPERM; | |
241 | } | |
7c673cae | 242 | |
31f18b77 FG |
243 | date = info.args.get("X-Amz-Date"); |
244 | struct tm date_t; | |
245 | if (!parse_iso8601(sview2cstr(date).data(), &date_t, nullptr, false)) { | |
246 | return -EPERM; | |
7c673cae | 247 | } |
7c673cae | 248 | |
31f18b77 FG |
249 | /* Used for pre-signatured url, We shouldn't return -ERR_REQUEST_TIME_SKEWED |
250 | * when current time <= X-Amz-Expires */ | |
251 | bool qsr = false; | |
252 | ||
253 | uint64_t now_req = 0; | |
254 | uint64_t now = ceph_clock_now(); | |
255 | ||
256 | boost::string_view expires = info.args.get("X-Amz-Expires"); | |
257 | if (!expires.empty()) { | |
258 | /* X-Amz-Expires provides the time period, in seconds, for which | |
259 | the generated presigned URL is valid. The minimum value | |
260 | you can set is 1, and the maximum is 604800 (seven days) */ | |
261 | time_t exp = atoll(expires.data()); | |
262 | if ((exp < 1) || (exp > 7*24*60*60)) { | |
263 | dout(10) << "NOTICE: exp out of range, exp = " << exp << dendl; | |
264 | return -EPERM; | |
265 | } | |
266 | /* handle expiration in epoch time */ | |
267 | now_req = (uint64_t)internal_timegm(&date_t); | |
268 | if (now >= now_req + exp) { | |
269 | dout(10) << "NOTICE: now = " << now << ", now_req = " << now_req << ", exp = " << exp << dendl; | |
270 | return -EPERM; | |
271 | } | |
272 | qsr = true; | |
7c673cae | 273 | } |
7c673cae | 274 | |
31f18b77 FG |
275 | if ((now_req < now - RGW_AUTH_GRACE_MINS * 60 || |
276 | now_req > now + RGW_AUTH_GRACE_MINS * 60) && !qsr) { | |
277 | dout(10) << "NOTICE: request time skew too big." << dendl; | |
278 | dout(10) << "now_req = " << now_req << " now = " << now | |
279 | << "; now - RGW_AUTH_GRACE_MINS=" | |
280 | << now - RGW_AUTH_GRACE_MINS * 60 | |
281 | << "; now + RGW_AUTH_GRACE_MINS=" | |
282 | << now + RGW_AUTH_GRACE_MINS * 60 << dendl; | |
283 | return -ERR_REQUEST_TIME_SKEWED; | |
284 | } | |
7c673cae | 285 | |
31f18b77 FG |
286 | signedheaders = info.args.get("X-Amz-SignedHeaders"); |
287 | if (signedheaders.size() == 0) { | |
288 | return -EPERM; | |
289 | } | |
7c673cae | 290 | |
31f18b77 FG |
291 | signature = info.args.get("X-Amz-Signature"); |
292 | if (signature.size() == 0) { | |
293 | return -EPERM; | |
294 | } | |
7c673cae | 295 | |
31f18b77 | 296 | return 0; |
7c673cae FG |
297 | } |
298 | ||
31f18b77 FG |
299 | namespace { |
300 | static bool get_next_token(const boost::string_view& s, | |
301 | size_t& pos, | |
302 | const char* const delims, | |
303 | boost::string_view& token) | |
7c673cae | 304 | { |
31f18b77 FG |
305 | const size_t start = s.find_first_not_of(delims, pos); |
306 | if (start == boost::string_view::npos) { | |
307 | pos = s.size(); | |
308 | return false; | |
309 | } | |
7c673cae | 310 | |
31f18b77 FG |
311 | size_t end = s.find_first_of(delims, start); |
312 | if (end != boost::string_view::npos) | |
313 | pos = end + 1; | |
314 | else { | |
315 | pos = end = s.size(); | |
316 | } | |
317 | ||
318 | token = s.substr(start, end - start); | |
319 | return true; | |
320 | } | |
321 | ||
322 | template<std::size_t ExpectedStrNum> | |
323 | boost::container::small_vector<boost::string_view, ExpectedStrNum> | |
324 | get_str_vec(const boost::string_view& str, const char* const delims) | |
325 | { | |
326 | boost::container::small_vector<boost::string_view, ExpectedStrNum> str_vec; | |
327 | ||
328 | size_t pos = 0; | |
329 | boost::string_view token; | |
330 | while (pos < str.size()) { | |
331 | if (get_next_token(str, pos, delims, token)) { | |
332 | if (token.size() > 0) { | |
333 | str_vec.push_back(token); | |
334 | } | |
335 | } | |
336 | } | |
337 | ||
338 | return str_vec; | |
339 | } | |
340 | ||
341 | template<std::size_t ExpectedStrNum> | |
342 | boost::container::small_vector<boost::string_view, ExpectedStrNum> | |
343 | get_str_vec(const boost::string_view& str) | |
344 | { | |
345 | const char delims[] = ";,= \t"; | |
346 | return get_str_vec<ExpectedStrNum>(str, delims); | |
347 | } | |
348 | }; | |
349 | ||
350 | static inline int parse_v4_auth_header(const req_info& info, /* in */ | |
351 | boost::string_view& credential, /* out */ | |
352 | boost::string_view& signedheaders, /* out */ | |
353 | boost::string_view& signature, /* out */ | |
354 | boost::string_view& date) /* out */ | |
355 | { | |
356 | boost::string_view input(info.env->get("HTTP_AUTHORIZATION", "")); | |
357 | try { | |
358 | input = input.substr(::strlen(AWS4_HMAC_SHA256_STR) + 1); | |
359 | } catch (std::out_of_range&) { | |
360 | /* We should never ever run into this situation as the presence of | |
361 | * AWS4_HMAC_SHA256_STR had been verified earlier. */ | |
362 | dout(10) << "credentials string is too short" << dendl; | |
363 | return -EINVAL; | |
364 | } | |
365 | ||
366 | std::map<boost::string_view, boost::string_view> kv; | |
367 | for (const auto& s : get_str_vec<4>(input, ",")) { | |
368 | const auto parsed_pair = parse_key_value(s); | |
369 | if (parsed_pair) { | |
370 | kv[parsed_pair->first] = parsed_pair->second; | |
371 | } else { | |
372 | dout(10) << "NOTICE: failed to parse auth header (s=" << s << ")" | |
373 | << dendl; | |
374 | return -EINVAL; | |
375 | } | |
376 | } | |
377 | ||
378 | static const std::array<boost::string_view, 3> required_keys = { | |
379 | "Credential", | |
380 | "SignedHeaders", | |
381 | "Signature" | |
382 | }; | |
383 | ||
384 | /* Ensure that the presigned required keys are really there. */ | |
385 | for (const auto& k : required_keys) { | |
386 | if (kv.find(k) == std::end(kv)) { | |
387 | dout(10) << "NOTICE: auth header missing key: " << k << dendl; | |
388 | return -EINVAL; | |
389 | } | |
390 | } | |
391 | ||
392 | credential = kv["Credential"]; | |
393 | signedheaders = kv["SignedHeaders"]; | |
394 | signature = kv["Signature"]; | |
395 | ||
396 | /* sig hex str */ | |
397 | dout(10) << "v4 signature format = " << signature << dendl; | |
398 | ||
399 | /* ------------------------- handle x-amz-date header */ | |
400 | ||
401 | /* grab date */ | |
402 | ||
403 | const char *d = info.env->get("HTTP_X_AMZ_DATE"); | |
404 | struct tm t; | |
405 | if (!parse_iso8601(d, &t, NULL, false)) { | |
406 | dout(10) << "error reading date via http_x_amz_date" << dendl; | |
407 | return -EACCES; | |
408 | } | |
409 | date = d; | |
410 | ||
411 | return 0; | |
412 | } | |
413 | ||
414 | int parse_credentials(const req_info& info, /* in */ | |
415 | boost::string_view& access_key_id, /* out */ | |
416 | boost::string_view& credential_scope, /* out */ | |
417 | boost::string_view& signedheaders, /* out */ | |
418 | boost::string_view& signature, /* out */ | |
419 | boost::string_view& date, /* out */ | |
420 | bool& using_qs) /* out */ | |
421 | { | |
422 | const char* const http_auth = info.env->get("HTTP_AUTHORIZATION"); | |
423 | using_qs = http_auth == nullptr || http_auth[0] == '\0'; | |
424 | ||
425 | int ret; | |
426 | boost::string_view credential; | |
427 | if (using_qs) { | |
428 | ret = parse_v4_query_string(info, credential, signedheaders, | |
429 | signature, date); | |
430 | } else { | |
431 | ret = parse_v4_auth_header(info, credential, signedheaders, | |
432 | signature, date); | |
433 | } | |
434 | ||
435 | if (ret < 0) { | |
436 | return ret; | |
437 | } | |
438 | ||
439 | /* AKIAIVKTAZLOCF43WNQD/AAAAMMDD/region/host/aws4_request */ | |
440 | dout(10) << "v4 credential format = " << credential << dendl; | |
441 | ||
442 | if (std::count(credential.begin(), credential.end(), '/') != 4) { | |
443 | return -EINVAL; | |
444 | } | |
445 | ||
446 | /* credential must end with 'aws4_request' */ | |
447 | if (credential.find("aws4_request") == std::string::npos) { | |
448 | return -EINVAL; | |
449 | } | |
450 | ||
451 | /* grab access key id */ | |
452 | const size_t pos = credential.find("/"); | |
453 | access_key_id = credential.substr(0, pos); | |
454 | dout(10) << "access key id = " << access_key_id << dendl; | |
455 | ||
456 | /* grab credential scope */ | |
457 | credential_scope = credential.substr(pos + 1); | |
458 | dout(10) << "credential scope = " << credential_scope << dendl; | |
459 | ||
460 | return 0; | |
461 | } | |
462 | ||
463 | static inline bool char_needs_aws4_escaping(const char c) | |
464 | { | |
465 | if ((c >= 'a' && c <= 'z') || | |
466 | (c >= 'A' && c <= 'Z') || | |
467 | (c >= '0' && c <= '9')) { | |
468 | return false; | |
469 | } | |
470 | ||
471 | switch (c) { | |
472 | case '-': | |
473 | case '_': | |
474 | case '.': | |
475 | case '~': | |
476 | return false; | |
477 | } | |
478 | return true; | |
479 | } | |
480 | ||
481 | static inline std::string aws4_uri_encode(const std::string& src) | |
482 | { | |
483 | std::string result; | |
484 | ||
485 | for (const std::string::value_type c : src) { | |
486 | if (char_needs_aws4_escaping(c)) { | |
487 | rgw_uri_escape_char(c, result); | |
488 | } else { | |
489 | result.push_back(c); | |
490 | } | |
491 | } | |
492 | ||
493 | return result; | |
494 | } | |
495 | ||
496 | static inline std::string aws4_uri_recode(const boost::string_view& src) | |
497 | { | |
498 | std::string decoded = url_decode(src); | |
224ce89b | 499 | return aws4_uri_encode(decoded); |
31f18b77 FG |
500 | } |
501 | ||
502 | std::string get_v4_canonical_qs(const req_info& info, const bool using_qs) | |
503 | { | |
504 | if (info.request_params.empty()) { | |
505 | /* Optimize the typical flow. */ | |
506 | return std::string(); | |
507 | } | |
508 | ||
509 | /* Handle case when query string exists. Step 3 described in: http://docs. | |
510 | * aws.amazon.com/general/latest/gr/sigv4-create-canonical-request.html */ | |
511 | std::map<std::string, std::string> canonical_qs_map; | |
512 | for (const auto& s : get_str_vec<5>(info.request_params, "&")) { | |
513 | boost::string_view key, val; | |
514 | const auto parsed_pair = parse_key_value(s); | |
515 | if (parsed_pair) { | |
516 | std::tie(key, val) = *parsed_pair; | |
517 | } else { | |
518 | /* Handling a parameter without any value (even the empty one). That's | |
519 | * it, we've encountered something like "this_param&other_param=val" | |
520 | * which is used by S3 for subresources. */ | |
521 | key = s; | |
522 | } | |
523 | ||
524 | if (using_qs && key == "X-Amz-Signature") { | |
525 | /* Preserving the original behaviour of get_v4_canonical_qs() here. */ | |
526 | continue; | |
527 | } | |
528 | ||
529 | if (key == "X-Amz-Credential") { | |
530 | /* FIXME(rzarzynski): I can't find any comment in the previously linked | |
531 | * Amazon's docs saying that X-Amz-Credential should be handled in this | |
532 | * way. */ | |
533 | canonical_qs_map[key.to_string()] = val.to_string(); | |
7c673cae | 534 | } else { |
31f18b77 FG |
535 | canonical_qs_map[aws4_uri_recode(key)] = aws4_uri_recode(val); |
536 | } | |
537 | } | |
538 | ||
539 | /* Thanks to the early exist we have the guarantee that canonical_qs_map has | |
540 | * at least one element. */ | |
541 | auto iter = std::begin(canonical_qs_map); | |
542 | std::string canonical_qs; | |
543 | canonical_qs.append(iter->first) | |
544 | .append("=", ::strlen("=")) | |
545 | .append(iter->second); | |
546 | ||
547 | for (iter++; iter != std::end(canonical_qs_map); iter++) { | |
548 | canonical_qs.append("&", ::strlen("&")) | |
549 | .append(iter->first) | |
550 | .append("=", ::strlen("=")) | |
551 | .append(iter->second); | |
552 | } | |
553 | ||
554 | return canonical_qs; | |
555 | } | |
556 | ||
557 | boost::optional<std::string> | |
558 | get_v4_canonical_headers(const req_info& info, | |
559 | const boost::string_view& signedheaders, | |
560 | const bool using_qs, | |
561 | const bool force_boto2_compat) | |
562 | { | |
563 | std::map<boost::string_view, std::string> canonical_hdrs_map; | |
564 | for (const auto& token : get_str_vec<5>(signedheaders, ";")) { | |
565 | /* TODO(rzarzynski): we'd like to switch to sstring here but it should | |
566 | * get push_back() and reserve() first. */ | |
567 | std::string token_env = "HTTP_"; | |
568 | token_env.reserve(token.length() + std::strlen("HTTP_") + 1); | |
569 | ||
570 | std::transform(std::begin(token), std::end(token), | |
571 | std::back_inserter(token_env), [](const int c) { | |
572 | return c == '-' ? '_' : std::toupper(c); | |
573 | }); | |
574 | ||
575 | if (token_env == "HTTP_CONTENT_LENGTH") { | |
576 | token_env = "CONTENT_LENGTH"; | |
577 | } else if (token_env == "HTTP_CONTENT_TYPE") { | |
578 | token_env = "CONTENT_TYPE"; | |
579 | } | |
580 | const char* const t = info.env->get(token_env.c_str()); | |
581 | if (!t) { | |
582 | dout(10) << "warning env var not available" << dendl; | |
583 | continue; | |
584 | } | |
585 | ||
586 | std::string token_value(t); | |
587 | if (token_env == "HTTP_CONTENT_MD5" && | |
588 | !std::all_of(std::begin(token_value), std::end(token_value), | |
589 | is_base64_for_content_md5)) { | |
590 | dout(0) << "NOTICE: bad content-md5 provided (not base64)" | |
591 | << ", aborting request" << dendl; | |
592 | return boost::none; | |
593 | } | |
594 | ||
595 | if (force_boto2_compat && using_qs && token == "host") { | |
596 | boost::string_view port = info.env->get("SERVER_PORT", ""); | |
597 | boost::string_view secure_port = info.env->get("SERVER_PORT_SECURE", ""); | |
598 | ||
599 | if (!secure_port.empty()) { | |
600 | if (secure_port != "443") | |
601 | token_value.append(":", std::strlen(":")) | |
602 | .append(secure_port.data(), secure_port.length()); | |
603 | } else if (!port.empty()) { | |
604 | if (port != "80") | |
605 | token_value.append(":", std::strlen(":")) | |
606 | .append(port.data(), port.length()); | |
7c673cae FG |
607 | } |
608 | } | |
31f18b77 FG |
609 | |
610 | canonical_hdrs_map[token] = rgw_trim_whitespace(token_value); | |
611 | } | |
612 | ||
613 | std::string canonical_hdrs; | |
614 | for (const auto& header : canonical_hdrs_map) { | |
615 | const boost::string_view& name = header.first; | |
616 | const std::string& value = header.second; | |
617 | ||
618 | canonical_hdrs.append(name.data(), name.length()) | |
619 | .append(":", std::strlen(":")) | |
620 | .append(value) | |
621 | .append("\n", std::strlen("\n")); | |
7c673cae FG |
622 | } |
623 | ||
31f18b77 FG |
624 | return canonical_hdrs; |
625 | } | |
626 | ||
627 | /* | |
628 | * create canonical request for signature version 4 | |
629 | * | |
630 | * http://docs.aws.amazon.com/general/latest/gr/sigv4-create-canonical-request.html | |
631 | */ | |
632 | sha256_digest_t | |
633 | get_v4_canon_req_hash(CephContext* cct, | |
634 | const boost::string_view& http_verb, | |
635 | const std::string& canonical_uri, | |
636 | const std::string& canonical_qs, | |
637 | const std::string& canonical_hdrs, | |
638 | const boost::string_view& signed_hdrs, | |
639 | const boost::string_view& request_payload_hash) | |
640 | { | |
641 | ldout(cct, 10) << "payload request hash = " << request_payload_hash << dendl; | |
7c673cae | 642 | |
31f18b77 FG |
643 | const auto canonical_req = string_join_reserve("\n", |
644 | http_verb, | |
645 | canonical_uri, | |
646 | canonical_qs, | |
647 | canonical_hdrs, | |
648 | signed_hdrs, | |
649 | request_payload_hash); | |
7c673cae | 650 | |
31f18b77 | 651 | const auto canonical_req_hash = calc_hash_sha256(canonical_req); |
7c673cae | 652 | |
31f18b77 FG |
653 | ldout(cct, 10) << "canonical request = " << canonical_req << dendl; |
654 | ldout(cct, 10) << "canonical request hash = " | |
655 | << buf_to_hex(canonical_req_hash).data() << dendl; | |
7c673cae | 656 | |
31f18b77 | 657 | return canonical_req_hash; |
7c673cae FG |
658 | } |
659 | ||
660 | /* | |
31f18b77 FG |
661 | * create string to sign for signature version 4 |
662 | * | |
663 | * http://docs.aws.amazon.com/general/latest/gr/sigv4-create-string-to-sign.html | |
7c673cae | 664 | */ |
31f18b77 FG |
665 | AWSEngine::VersionAbstractor::string_to_sign_t |
666 | get_v4_string_to_sign(CephContext* const cct, | |
667 | const boost::string_view& algorithm, | |
668 | const boost::string_view& request_date, | |
669 | const boost::string_view& credential_scope, | |
670 | const sha256_digest_t& canonreq_hash) | |
7c673cae | 671 | { |
31f18b77 FG |
672 | const auto hexed_cr_hash = buf_to_hex(canonreq_hash); |
673 | const boost::string_view hexed_cr_hash_str(hexed_cr_hash.data(), | |
674 | hexed_cr_hash.size() - 1); | |
7c673cae | 675 | |
31f18b77 FG |
676 | const auto string_to_sign = string_join_reserve("\n", |
677 | algorithm, | |
678 | request_date, | |
679 | credential_scope, | |
680 | hexed_cr_hash_str); | |
7c673cae | 681 | |
31f18b77 FG |
682 | ldout(cct, 10) << "string to sign = " |
683 | << rgw::crypt_sanitize::log_content{string_to_sign} | |
684 | << dendl; | |
7c673cae | 685 | |
31f18b77 FG |
686 | return string_to_sign; |
687 | } | |
7c673cae | 688 | |
7c673cae | 689 | |
31f18b77 FG |
690 | static inline std::tuple<boost::string_view, /* date */ |
691 | boost::string_view, /* region */ | |
692 | boost::string_view> /* service */ | |
693 | parse_cred_scope(boost::string_view credential_scope) | |
694 | { | |
695 | /* date cred */ | |
696 | size_t pos = credential_scope.find("/"); | |
697 | const auto date_cs = credential_scope.substr(0, pos); | |
698 | credential_scope = credential_scope.substr(pos + 1); | |
699 | ||
700 | /* region cred */ | |
701 | pos = credential_scope.find("/"); | |
702 | const auto region_cs = credential_scope.substr(0, pos); | |
703 | credential_scope = credential_scope.substr(pos + 1); | |
704 | ||
705 | /* service cred */ | |
706 | pos = credential_scope.find("/"); | |
707 | const auto service_cs = credential_scope.substr(0, pos); | |
708 | ||
709 | return std::make_tuple(date_cs, region_cs, service_cs); | |
710 | } | |
711 | ||
712 | static inline std::vector<unsigned char> | |
713 | transform_secret_key(const boost::string_view& secret_access_key) | |
714 | { | |
715 | /* TODO(rzarzynski): switch to constexpr when C++14 becomes available. */ | |
716 | static const std::initializer_list<unsigned char> AWS4 { 'A', 'W', 'S', '4' }; | |
717 | ||
718 | /* boost::container::small_vector might be used here if someone wants to | |
719 | * optimize out even more dynamic allocations. */ | |
720 | std::vector<unsigned char> secret_key_utf8; | |
721 | secret_key_utf8.reserve(AWS4.size() + secret_access_key.size()); | |
722 | secret_key_utf8.assign(AWS4); | |
723 | ||
724 | for (const auto c : secret_access_key) { | |
725 | std::array<unsigned char, MAX_UTF8_SZ> buf; | |
726 | const size_t n = encode_utf8(c, buf.data()); | |
727 | secret_key_utf8.insert(std::end(secret_key_utf8), | |
728 | std::begin(buf), std::begin(buf) + n); | |
729 | } | |
730 | ||
731 | return secret_key_utf8; | |
7c673cae FG |
732 | } |
733 | ||
734 | /* | |
31f18b77 | 735 | * calculate the SigningKey of AWS auth version 4 |
7c673cae | 736 | */ |
31f18b77 FG |
737 | static sha256_digest_t |
738 | get_v4_signing_key(CephContext* const cct, | |
739 | const boost::string_view& credential_scope, | |
740 | const boost::string_view& secret_access_key) | |
741 | { | |
742 | boost::string_view date, region, service; | |
743 | std::tie(date, region, service) = parse_cred_scope(credential_scope); | |
7c673cae | 744 | |
31f18b77 FG |
745 | const auto utfed_sec_key = transform_secret_key(secret_access_key); |
746 | const auto date_k = calc_hmac_sha256(utfed_sec_key, date); | |
747 | const auto region_k = calc_hmac_sha256(date_k, region); | |
748 | const auto service_k = calc_hmac_sha256(region_k, service); | |
7c673cae | 749 | |
31f18b77 FG |
750 | /* aws4_request */ |
751 | const auto signing_key = calc_hmac_sha256(service_k, | |
752 | boost::string_view("aws4_request")); | |
753 | ||
754 | ldout(cct, 10) << "date_k = " << buf_to_hex(date_k).data() << dendl; | |
755 | ldout(cct, 10) << "region_k = " << buf_to_hex(region_k).data() << dendl; | |
756 | ldout(cct, 10) << "service_k = " << buf_to_hex(service_k).data() << dendl; | |
757 | ldout(cct, 10) << "signing_k = " << buf_to_hex(signing_key).data() << dendl; | |
758 | ||
759 | return signing_key; | |
7c673cae FG |
760 | } |
761 | ||
762 | /* | |
763 | * calculate the AWS signature version 4 | |
31f18b77 FG |
764 | * |
765 | * http://docs.aws.amazon.com/general/latest/gr/sigv4-calculate-signature.html | |
766 | * | |
767 | * srv_signature_t is an alias over Ceph's basic_sstring. We're using | |
768 | * it to keep everything within the stack boundaries instead of doing | |
769 | * dynamic allocations. | |
7c673cae | 770 | */ |
31f18b77 FG |
771 | AWSEngine::VersionAbstractor::server_signature_t |
772 | get_v4_signature(const boost::string_view& credential_scope, | |
773 | CephContext* const cct, | |
774 | const boost::string_view& secret_key, | |
775 | const AWSEngine::VersionAbstractor::string_to_sign_t& string_to_sign) | |
776 | { | |
777 | auto signing_key = get_v4_signing_key(cct, credential_scope, secret_key); | |
7c673cae | 778 | |
31f18b77 FG |
779 | /* The server-side generated digest for comparison. */ |
780 | const auto digest = calc_hmac_sha256(signing_key, string_to_sign); | |
781 | ||
782 | /* TODO(rzarzynski): I would love to see our sstring having reserve() and | |
783 | * the non-const data() variant like C++17's std::string. */ | |
784 | using srv_signature_t = AWSEngine::VersionAbstractor::server_signature_t; | |
785 | srv_signature_t signature(srv_signature_t::initialized_later(), | |
786 | digest.size() * 2); | |
787 | buf_to_hex(digest.data(), digest.size(), signature.begin()); | |
788 | ||
789 | ldout(cct, 10) << "generated signature = " << signature << dendl; | |
790 | ||
791 | return signature; | |
792 | } | |
793 | ||
794 | AWSEngine::VersionAbstractor::server_signature_t | |
795 | get_v2_signature(CephContext* const cct, | |
796 | const std::string& secret_key, | |
797 | const AWSEngine::VersionAbstractor::string_to_sign_t& string_to_sign) | |
798 | { | |
799 | if (secret_key.empty()) { | |
800 | throw -EINVAL; | |
7c673cae FG |
801 | } |
802 | ||
31f18b77 | 803 | const auto digest = calc_hmac_sha1(secret_key, string_to_sign); |
7c673cae | 804 | |
31f18b77 FG |
805 | /* 64 is really enough */; |
806 | char buf[64]; | |
807 | const int ret = ceph_armor(std::begin(buf), | |
808 | std::begin(buf) + 64, | |
809 | std::begin(digest), | |
810 | std::begin(digest) + digest.size()); | |
811 | if (ret < 0) { | |
812 | ldout(cct, 10) << "ceph_armor failed" << dendl; | |
813 | throw ret; | |
814 | } else { | |
815 | buf[ret] = '\0'; | |
816 | using srv_signature_t = AWSEngine::VersionAbstractor::server_signature_t; | |
817 | return srv_signature_t(buf, ret); | |
818 | } | |
819 | } | |
7c673cae | 820 | |
31f18b77 FG |
821 | bool AWSv4ComplMulti::ChunkMeta::is_new_chunk_in_stream(size_t stream_pos) const |
822 | { | |
823 | return stream_pos >= (data_offset_in_stream + data_length); | |
824 | } | |
7c673cae | 825 | |
31f18b77 FG |
826 | size_t AWSv4ComplMulti::ChunkMeta::get_data_size(size_t stream_pos) const |
827 | { | |
828 | if (stream_pos > (data_offset_in_stream + data_length)) { | |
829 | /* Data in parsing_buf. */ | |
830 | return data_length; | |
831 | } else { | |
832 | return data_offset_in_stream + data_length - stream_pos; | |
833 | } | |
834 | } | |
835 | ||
836 | ||
837 | /* AWSv4 completers begin. */ | |
838 | std::pair<AWSv4ComplMulti::ChunkMeta, size_t /* consumed */> | |
839 | AWSv4ComplMulti::ChunkMeta::create_next(CephContext* const cct, | |
840 | ChunkMeta&& old, | |
841 | const char* const metabuf, | |
842 | const size_t metabuf_len) | |
843 | { | |
844 | boost::string_ref metastr(metabuf, metabuf_len); | |
7c673cae | 845 | |
31f18b77 FG |
846 | const size_t semicolon_pos = metastr.find(";"); |
847 | if (semicolon_pos == boost::string_ref::npos) { | |
848 | ldout(cct, 20) << "AWSv4ComplMulti cannot find the ';' separator" | |
849 | << dendl; | |
850 | throw rgw::io::Exception(EINVAL, std::system_category()); | |
7c673cae FG |
851 | } |
852 | ||
31f18b77 FG |
853 | char* data_field_end; |
854 | /* strtoull ignores the "\r\n" sequence after each non-first chunk. */ | |
855 | const size_t data_length = std::strtoull(metabuf, &data_field_end, 16); | |
856 | if (data_length == 0 && data_field_end == metabuf) { | |
857 | ldout(cct, 20) << "AWSv4ComplMulti: cannot parse the data size" | |
858 | << dendl; | |
859 | throw rgw::io::Exception(EINVAL, std::system_category()); | |
860 | } | |
7c673cae | 861 | |
31f18b77 FG |
862 | /* Parse the chunk_signature=... part. */ |
863 | const auto signature_part = metastr.substr(semicolon_pos + 1); | |
864 | const size_t eq_sign_pos = signature_part.find("="); | |
865 | if (eq_sign_pos == boost::string_ref::npos) { | |
866 | ldout(cct, 20) << "AWSv4ComplMulti: cannot find the '=' separator" | |
867 | << dendl; | |
868 | throw rgw::io::Exception(EINVAL, std::system_category()); | |
869 | } | |
7c673cae | 870 | |
31f18b77 FG |
871 | /* OK, we have at least the beginning of a signature. */ |
872 | const size_t data_sep_pos = signature_part.find("\r\n"); | |
873 | if (data_sep_pos == boost::string_ref::npos) { | |
874 | ldout(cct, 20) << "AWSv4ComplMulti: no new line at signature end" | |
875 | << dendl; | |
876 | throw rgw::io::Exception(EINVAL, std::system_category()); | |
877 | } | |
7c673cae | 878 | |
31f18b77 FG |
879 | const auto signature = \ |
880 | signature_part.substr(eq_sign_pos + 1, data_sep_pos - 1 - eq_sign_pos); | |
881 | if (signature.length() != SIG_SIZE) { | |
882 | ldout(cct, 20) << "AWSv4ComplMulti: signature.length() != 64" | |
883 | << dendl; | |
884 | throw rgw::io::Exception(EINVAL, std::system_category()); | |
885 | } | |
7c673cae | 886 | |
31f18b77 FG |
887 | const size_t data_starts_in_stream = \ |
888 | + semicolon_pos + strlen(";") + data_sep_pos + strlen("\r\n") | |
889 | + old.data_offset_in_stream + old.data_length; | |
7c673cae | 890 | |
31f18b77 FG |
891 | ldout(cct, 20) << "parsed new chunk; signature=" << signature |
892 | << ", data_length=" << data_length | |
893 | << ", data_starts_in_stream=" << data_starts_in_stream | |
894 | << dendl; | |
7c673cae | 895 | |
31f18b77 FG |
896 | return std::make_pair(ChunkMeta(data_starts_in_stream, |
897 | data_length, | |
898 | signature), | |
899 | semicolon_pos + 83); | |
900 | } | |
7c673cae | 901 | |
31f18b77 FG |
902 | std::string |
903 | AWSv4ComplMulti::calc_chunk_signature(const std::string& payload_hash) const | |
904 | { | |
905 | const auto string_to_sign = string_join_reserve("\n", | |
224ce89b | 906 | AWS4_HMAC_SHA256_PAYLOAD_STR, |
31f18b77 FG |
907 | date, |
908 | credential_scope, | |
909 | prev_chunk_signature, | |
910 | AWS4_EMPTY_PAYLOAD_HASH, | |
911 | payload_hash); | |
912 | ||
913 | ldout(cct, 20) << "AWSv4ComplMulti: string_to_sign=\n" << string_to_sign | |
914 | << dendl; | |
915 | ||
916 | /* new chunk signature */ | |
917 | const auto sighex = buf_to_hex(calc_hmac_sha256(signing_key, | |
918 | string_to_sign)); | |
919 | /* FIXME(rzarzynski): std::string here is really unnecessary. */ | |
920 | return std::string(sighex.data(), sighex.size() - 1); | |
921 | } | |
7c673cae | 922 | |
7c673cae | 923 | |
31f18b77 FG |
924 | bool AWSv4ComplMulti::is_signature_mismatched() |
925 | { | |
926 | /* The validity of previous chunk can be verified only after getting meta- | |
927 | * data of the next one. */ | |
928 | const auto payload_hash = calc_hash_sha256_restart_stream(&sha256_hash); | |
929 | const auto calc_signature = calc_chunk_signature(payload_hash); | |
930 | ||
931 | if (chunk_meta.get_signature() != calc_signature) { | |
932 | ldout(cct, 20) << "AWSv4ComplMulti: ERROR: chunk signature mismatch" | |
933 | << dendl; | |
934 | ldout(cct, 20) << "AWSv4ComplMulti: declared signature=" | |
935 | << chunk_meta.get_signature() << dendl; | |
936 | ldout(cct, 20) << "AWSv4ComplMulti: calculated signature=" | |
937 | << calc_signature << dendl; | |
938 | ||
939 | return true; | |
940 | } else { | |
941 | prev_chunk_signature = chunk_meta.get_signature(); | |
942 | return false; | |
943 | } | |
944 | } | |
7c673cae | 945 | |
31f18b77 FG |
946 | size_t AWSv4ComplMulti::recv_body(char* const buf, const size_t buf_max) |
947 | { | |
948 | /* Buffer stores only parsed stream. Raw values reflect the stream | |
949 | * we're getting from a client. */ | |
950 | size_t buf_pos = 0; | |
951 | ||
952 | if (chunk_meta.is_new_chunk_in_stream(stream_pos)) { | |
953 | /* Verify signature of the previous chunk. We aren't doing that for new | |
954 | * one as the procedure requires calculation of payload hash. This code | |
955 | * won't be triggered for the last, zero-length chunk. Instead, is will | |
956 | * be checked in the complete() method. */ | |
957 | if (stream_pos >= ChunkMeta::META_MAX_SIZE && is_signature_mismatched()) { | |
958 | throw rgw::io::Exception(ERR_SIGNATURE_NO_MATCH, std::system_category()); | |
959 | } | |
7c673cae | 960 | |
31f18b77 FG |
961 | /* We don't have metadata for this range. This means a new chunk, so we |
962 | * need to parse a fresh portion of the stream. Let's start. */ | |
963 | size_t to_extract = parsing_buf.capacity() - parsing_buf.size(); | |
964 | do { | |
965 | const size_t orig_size = parsing_buf.size(); | |
966 | parsing_buf.resize(parsing_buf.size() + to_extract); | |
967 | const size_t received = io_base_t::recv_body(parsing_buf.data() + orig_size, | |
968 | to_extract); | |
969 | parsing_buf.resize(parsing_buf.size() - (to_extract - received)); | |
970 | if (received == 0) { | |
971 | break; | |
972 | } | |
7c673cae | 973 | |
31f18b77 FG |
974 | stream_pos += received; |
975 | to_extract -= received; | |
976 | } while (to_extract > 0); | |
7c673cae | 977 | |
31f18b77 FG |
978 | size_t consumed; |
979 | std::tie(chunk_meta, consumed) = \ | |
980 | ChunkMeta::create_next(cct, std::move(chunk_meta), | |
981 | parsing_buf.data(), parsing_buf.size()); | |
7c673cae | 982 | |
31f18b77 FG |
983 | /* We can drop the bytes consumed during metadata parsing. The remainder |
984 | * can be chunk's data plus possibly beginning of next chunks' metadata. */ | |
985 | parsing_buf.erase(std::begin(parsing_buf), | |
986 | std::begin(parsing_buf) + consumed); | |
987 | } | |
7c673cae | 988 | |
31f18b77 FG |
989 | size_t to_extract = \ |
990 | std::min(chunk_meta.get_data_size(stream_pos), buf_max); | |
991 | ||
992 | /* It's quite probable we have a couple of real data bytes stored together | |
993 | * with meta-data in the parsing_buf. We need to extract them and move to | |
994 | * the final buffer. This is a trade-off between frontend's read overhead | |
995 | * and memcpy. */ | |
996 | if (to_extract > 0 && parsing_buf.size() > 0) { | |
997 | const auto data_len = std::min(to_extract, parsing_buf.size()); | |
998 | const auto data_end_iter = std::begin(parsing_buf) + data_len; | |
7c673cae | 999 | |
31f18b77 FG |
1000 | std::copy(std::begin(parsing_buf), data_end_iter, buf); |
1001 | parsing_buf.erase(std::begin(parsing_buf), data_end_iter); | |
7c673cae | 1002 | |
31f18b77 | 1003 | calc_hash_sha256_update_stream(sha256_hash, buf, data_len); |
7c673cae | 1004 | |
31f18b77 FG |
1005 | to_extract -= data_len; |
1006 | buf_pos += data_len; | |
1007 | } | |
7c673cae | 1008 | |
31f18b77 FG |
1009 | /* Now we can do the bulk read directly from RestfulClient without any extra |
1010 | * buffering. */ | |
1011 | while (to_extract > 0) { | |
1012 | const size_t received = io_base_t::recv_body(buf + buf_pos, to_extract); | |
7c673cae | 1013 | |
31f18b77 FG |
1014 | if (received == 0) { |
1015 | break; | |
1016 | } | |
7c673cae | 1017 | |
31f18b77 | 1018 | calc_hash_sha256_update_stream(sha256_hash, buf + buf_pos, received); |
7c673cae | 1019 | |
31f18b77 FG |
1020 | buf_pos += received; |
1021 | stream_pos += received; | |
1022 | to_extract -= received; | |
1023 | } | |
7c673cae | 1024 | |
31f18b77 FG |
1025 | dout(20) << "AWSv4ComplMulti: filled=" << buf_pos << dendl; |
1026 | return buf_pos; | |
1027 | } | |
7c673cae | 1028 | |
31f18b77 FG |
1029 | void AWSv4ComplMulti::modify_request_state(req_state* const s_rw) |
1030 | { | |
1031 | const char* const decoded_length = \ | |
1032 | s_rw->info.env->get("HTTP_X_AMZ_DECODED_CONTENT_LENGTH"); | |
7c673cae | 1033 | |
31f18b77 FG |
1034 | if (!decoded_length) { |
1035 | throw -EINVAL; | |
1036 | } else { | |
1037 | s_rw->length = decoded_length; | |
1038 | s_rw->content_length = parse_content_length(decoded_length); | |
1039 | ||
1040 | if (s_rw->content_length < 0) { | |
1041 | ldout(cct, 10) << "negative AWSv4's content length, aborting" << dendl; | |
1042 | throw -EINVAL; | |
1043 | } | |
1044 | } | |
1045 | ||
1046 | /* Install the filter over rgw::io::RestfulClient. */ | |
1047 | AWS_AUTHv4_IO(s_rw)->add_filter( | |
1048 | std::static_pointer_cast<io_base_t>(shared_from_this())); | |
1049 | } | |
1050 | ||
1051 | bool AWSv4ComplMulti::complete() | |
1052 | { | |
1053 | /* Now it's time to verify the signature of the last, zero-length chunk. */ | |
1054 | if (is_signature_mismatched()) { | |
1055 | ldout(cct, 10) << "ERROR: signature of last chunk does not match" | |
1056 | << dendl; | |
1057 | return false; | |
1058 | } else { | |
1059 | return true; | |
1060 | } | |
1061 | } | |
1062 | ||
1063 | rgw::auth::Completer::cmplptr_t | |
1064 | AWSv4ComplMulti::create(const req_state* const s, | |
1065 | boost::string_view date, | |
1066 | boost::string_view credential_scope, | |
1067 | boost::string_view seed_signature, | |
1068 | const boost::optional<std::string>& secret_key) | |
1069 | { | |
1070 | if (!secret_key) { | |
1071 | /* Some external authorizers (like Keystone) aren't fully compliant with | |
1072 | * AWSv4. They do not provide the secret_key which is necessary to handle | |
1073 | * the streamed upload. */ | |
1074 | throw -ERR_NOT_IMPLEMENTED; | |
1075 | } | |
1076 | ||
1077 | const auto signing_key = \ | |
1078 | rgw::auth::s3::get_v4_signing_key(s->cct, credential_scope, *secret_key); | |
1079 | ||
1080 | return std::make_shared<AWSv4ComplMulti>(s, | |
1081 | std::move(date), | |
1082 | std::move(credential_scope), | |
1083 | std::move(seed_signature), | |
1084 | signing_key); | |
7c673cae | 1085 | } |
31f18b77 FG |
1086 | |
1087 | size_t AWSv4ComplSingle::recv_body(char* const buf, const size_t max) | |
1088 | { | |
1089 | const auto received = io_base_t::recv_body(buf, max); | |
1090 | calc_hash_sha256_update_stream(sha256_hash, buf, received); | |
1091 | ||
1092 | return received; | |
1093 | } | |
1094 | ||
1095 | void AWSv4ComplSingle::modify_request_state(req_state* const s_rw) | |
1096 | { | |
1097 | /* Install the filter over rgw::io::RestfulClient. */ | |
1098 | AWS_AUTHv4_IO(s_rw)->add_filter( | |
1099 | std::static_pointer_cast<io_base_t>(shared_from_this())); | |
1100 | } | |
1101 | ||
1102 | bool AWSv4ComplSingle::complete() | |
1103 | { | |
1104 | /* The completer is only for the cases where signed payload has been | |
1105 | * requested. It won't be used, for instance, during the query string-based | |
1106 | * authentication. */ | |
1107 | const auto payload_hash = calc_hash_sha256_close_stream(&sha256_hash); | |
1108 | ||
1109 | /* Validate x-amz-sha256 */ | |
1110 | if (payload_hash.compare(expected_request_payload_hash) == 0) { | |
1111 | return true; | |
1112 | } else { | |
1113 | ldout(cct, 10) << "ERROR: x-amz-content-sha256 does not match" | |
1114 | << dendl; | |
1115 | ldout(cct, 10) << "ERROR: grab_aws4_sha256_hash()=" | |
1116 | << payload_hash << dendl; | |
1117 | ldout(cct, 10) << "ERROR: expected_request_payload_hash=" | |
1118 | << expected_request_payload_hash << dendl; | |
1119 | return false; | |
1120 | } | |
1121 | } | |
1122 | ||
1123 | AWSv4ComplSingle::AWSv4ComplSingle(const req_state* const s) | |
1124 | : io_base_t(nullptr), | |
1125 | cct(s->cct), | |
1126 | expected_request_payload_hash(get_v4_exp_payload_hash(s->info)), | |
1127 | sha256_hash(calc_hash_sha256_open_stream()) { | |
1128 | } | |
1129 | ||
1130 | rgw::auth::Completer::cmplptr_t | |
1131 | AWSv4ComplSingle::create(const req_state* const s, | |
1132 | const boost::optional<std::string>&) | |
1133 | { | |
1134 | return std::make_shared<AWSv4ComplSingle>(s); | |
1135 | } | |
1136 | ||
1137 | } /* namespace s3 */ | |
1138 | } /* namespace auth */ | |
1139 | } /* namespace rgw */ |