Adding upstream version 14.2.21.upstream/14.2.21upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1921 insertions, 0 deletions

diff --git a/src/rgw/rgw_common.cc b/src/rgw/rgw_common.cc
new file mode 100644
index 00000000..567b80ca
--- /dev/null
+++ b/src/rgw/rgw_common.cc
@@ -0,0 +1,1921 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#include <errno.h>
+#include <vector>
+#include <algorithm>
+#include <string>
+#include <boost/tokenizer.hpp>
+
+#include "json_spirit/json_spirit.h"
+#include "common/ceph_json.h"
+
+#include "rgw_op.h"
+#include "rgw_common.h"
+#include "rgw_acl.h"
+#include "rgw_string.h"
+#include "rgw_rados.h"
+#include "rgw_http_errors.h"
+#include "rgw_arn.h"
+
+#include "common/ceph_crypto.h"
+#include "common/armor.h"
+#include "common/errno.h"
+#include "common/Clock.h"
+#include "common/Formatter.h"
+#include "common/convenience.h"
+#include "common/strtol.h"
+#include "include/str_list.h"
+#include "rgw_crypt_sanitize.h"
+
+#include <sstream>
+
+#define dout_context g_ceph_context
+#define dout_subsys ceph_subsys_rgw
+
+using rgw::ARN;
+using rgw::IAM::Effect;
+using rgw::IAM::op_to_perm;
+using rgw::IAM::Policy;
+
+const uint32_t RGWBucketInfo::NUM_SHARDS_BLIND_BUCKET(UINT32_MAX);
+
+rgw_http_errors rgw_http_s3_errors({
+    { 0, {200, "" }},
+    { STATUS_CREATED, {201, "Created" }},
+    { STATUS_ACCEPTED, {202, "Accepted" }},
+    { STATUS_NO_CONTENT, {204, "NoContent" }},
+    { STATUS_PARTIAL_CONTENT, {206, "" }},
+    { ERR_PERMANENT_REDIRECT, {301, "PermanentRedirect" }},
+    { ERR_WEBSITE_REDIRECT, {301, "WebsiteRedirect" }},
+    { STATUS_REDIRECT, {303, "" }},
+    { ERR_NOT_MODIFIED, {304, "NotModified" }},
+    { EINVAL, {400, "InvalidArgument" }},
+    { ERR_INVALID_REQUEST, {400, "InvalidRequest" }},
+    { ERR_INVALID_DIGEST, {400, "InvalidDigest" }},
+    { ERR_BAD_DIGEST, {400, "BadDigest" }},
+    { ERR_INVALID_LOCATION_CONSTRAINT, {400, "InvalidLocationConstraint" }},
+    { ERR_ZONEGROUP_DEFAULT_PLACEMENT_MISCONFIGURATION, {400, "ZonegroupDefaultPlacementMisconfiguration" }},
+    { ERR_INVALID_BUCKET_NAME, {400, "InvalidBucketName" }},
+    { ERR_INVALID_OBJECT_NAME, {400, "InvalidObjectName" }},
+    { ERR_UNRESOLVABLE_EMAIL, {400, "UnresolvableGrantByEmailAddress" }},
+    { ERR_INVALID_PART, {400, "InvalidPart" }},
+    { ERR_INVALID_PART_ORDER, {400, "InvalidPartOrder" }},
+    { ERR_REQUEST_TIMEOUT, {400, "RequestTimeout" }},
+    { ERR_TOO_LARGE, {400, "EntityTooLarge" }},
+    { ERR_TOO_SMALL, {400, "EntityTooSmall" }},
+    { ERR_TOO_MANY_BUCKETS, {400, "TooManyBuckets" }},
+    { ERR_MALFORMED_XML, {400, "MalformedXML" }},
+    { ERR_AMZ_CONTENT_SHA256_MISMATCH, {400, "XAmzContentSHA256Mismatch" }},
+    { ERR_MALFORMED_DOC, {400, "MalformedPolicyDocument"}},
+    { ERR_INVALID_TAG, {400, "InvalidTag"}},
+    { ERR_MALFORMED_ACL_ERROR, {400, "MalformedACLError" }},
+    { ERR_INVALID_CORS_RULES_ERROR, {400, "InvalidRequest" }},
+    { ERR_INVALID_WEBSITE_ROUTING_RULES_ERROR, {400, "InvalidRequest" }},
+    { ERR_INVALID_ENCRYPTION_ALGORITHM, {400, "InvalidEncryptionAlgorithmError" }},
+    { ERR_INVALID_RETENTION_PERIOD,{400, "InvalidRetentionPeriod"}},
+    { ERR_LENGTH_REQUIRED, {411, "MissingContentLength" }},
+    { EACCES, {403, "AccessDenied" }},
+    { EPERM, {403, "AccessDenied" }},
+    { ERR_SIGNATURE_NO_MATCH, {403, "SignatureDoesNotMatch" }},
+    { ERR_INVALID_ACCESS_KEY, {403, "InvalidAccessKeyId" }},
+    { ERR_USER_SUSPENDED, {403, "UserSuspended" }},
+    { ERR_REQUEST_TIME_SKEWED, {403, "RequestTimeTooSkewed" }},
+    { ERR_QUOTA_EXCEEDED, {403, "QuotaExceeded" }},
+    { ERR_MFA_REQUIRED, {403, "AccessDenied" }},
+    { ENOENT, {404, "NoSuchKey" }},
+    { ERR_NO_SUCH_BUCKET, {404, "NoSuchBucket" }},
+    { ERR_NO_SUCH_WEBSITE_CONFIGURATION, {404, "NoSuchWebsiteConfiguration" }},
+    { ERR_NO_SUCH_UPLOAD, {404, "NoSuchUpload" }},
+    { ERR_NOT_FOUND, {404, "Not Found"}},
+    { ERR_NO_SUCH_LC, {404, "NoSuchLifecycleConfiguration"}},
+    { ERR_NO_SUCH_BUCKET_POLICY, {404, "NoSuchBucketPolicy"}},
+    { ERR_NO_SUCH_USER, {404, "NoSuchUser"}},
+    { ERR_NO_ROLE_FOUND, {404, "NoSuchEntity"}},
+    { ERR_NO_CORS_FOUND, {404, "NoSuchCORSConfiguration"}},
+    { ERR_NO_SUCH_SUBUSER, {404, "NoSuchSubUser"}},
+    { ERR_NO_SUCH_ENTITY, {404, "NoSuchEntity"}},
+    { ERR_NO_SUCH_CORS_CONFIGURATION, {404, "NoSuchCORSConfiguration"}},
+    { ERR_NO_SUCH_OBJECT_LOCK_CONFIGURATION, {404, "ObjectLockConfigurationNotFoundError"}},
+    { ERR_METHOD_NOT_ALLOWED, {405, "MethodNotAllowed" }},
+    { ETIMEDOUT, {408, "RequestTimeout" }},
+    { EEXIST, {409, "BucketAlreadyExists" }},
+    { ERR_USER_EXIST, {409, "UserAlreadyExists" }},
+    { ERR_EMAIL_EXIST, {409, "EmailExists" }},
+    { ERR_KEY_EXIST, {409, "KeyExists"}},
+    { ERR_TAG_CONFLICT, {409, "OperationAborted"}},
+    { ERR_POSITION_NOT_EQUAL_TO_LENGTH, {409, "PositionNotEqualToLength"}},
+    { ERR_OBJECT_NOT_APPENDABLE, {409, "ObjectNotAppendable"}},
+    { ERR_INVALID_BUCKET_STATE, {409, "InvalidBucketState"}},
+    { ERR_INVALID_SECRET_KEY, {400, "InvalidSecretKey"}},
+    { ERR_INVALID_KEY_TYPE, {400, "InvalidKeyType"}},
+    { ERR_INVALID_CAP, {400, "InvalidCapability"}},
+    { ERR_INVALID_TENANT_NAME, {400, "InvalidTenantName" }},
+    { ENOTEMPTY, {409, "BucketNotEmpty" }},
+    { ERR_PRECONDITION_FAILED, {412, "PreconditionFailed" }},
+    { ERANGE, {416, "InvalidRange" }},
+    { ERR_UNPROCESSABLE_ENTITY, {422, "UnprocessableEntity" }},
+    { ERR_LOCKED, {423, "Locked" }},
+    { ERR_INTERNAL_ERROR, {500, "InternalError" }},
+    { ERR_NOT_IMPLEMENTED, {501, "NotImplemented" }},
+    { ERR_SERVICE_UNAVAILABLE, {503, "ServiceUnavailable"}},
+    { ERR_RATE_LIMITED, {503, "SlowDown"}},
+    { ERR_ZERO_IN_URL, {400, "InvalidRequest" }},
+});
+
+rgw_http_errors rgw_http_swift_errors({
+    { EACCES, {403, "AccessDenied" }},
+    { EPERM, {401, "AccessDenied" }},
+    { ENAMETOOLONG, {400, "Metadata name too long" }},
+    { ERR_USER_SUSPENDED, {401, "UserSuspended" }},
+    { ERR_INVALID_UTF8, {412, "Invalid UTF8" }},
+    { ERR_BAD_URL, {412, "Bad URL" }},
+    { ERR_NOT_SLO_MANIFEST, {400, "Not an SLO manifest" }},
+    { ERR_QUOTA_EXCEEDED, {413, "QuotaExceeded" }},
+    { ENOTEMPTY, {409, "There was a conflict when trying "
+                       "to complete your request." }},
+    /* FIXME(rzarzynski): we need to find a way to apply Swift's error handling
+     * procedures also for ERR_ZERO_IN_URL. This make a problem as the validation
+     * is performed very early, even before setting the req_state::proto_flags. */
+    { ERR_ZERO_IN_URL, {412, "Invalid UTF8 or contains NULL"}},
+    { ERR_RATE_LIMITED, {498, "Rate Limited"}},
+});
+
+rgw_http_errors rgw_http_sts_errors({
+    { ERR_PACKED_POLICY_TOO_LARGE, {400, "PackedPolicyTooLarge" }},
+    { ERR_INVALID_IDENTITY_TOKEN, {400, "InvalidIdentityToken" }},
+});
+
+rgw_http_errors rgw_http_iam_errors({
+    { ERR_ROLE_EXISTS, {409, "EntityAlreadyExists"}},
+    { ERR_DELETE_CONFLICT, {409, "DeleteConflict"}},
+});
+
+using namespace ceph::crypto;
+
+rgw_err::
+rgw_err()
+{
+  clear();
+}
+
+void rgw_err::
+clear()
+{
+  http_ret = 200;
+  ret = 0;
+  err_code.clear();
+}
+
+bool rgw_err::
+is_clear() const
+{
+  return (http_ret == 200);
+}
+
+bool rgw_err::
+is_err() const
+{
+  return !(http_ret >= 200 && http_ret <= 399);
+}
+
+// The requestURI transferred from the frontend can be abs_path or absoluteURI
+// If it is absoluteURI, we should adjust it to abs_path for the following 
+// S3 authorization and some other processes depending on the requestURI
+// The absoluteURI can start with "http://", "https://", "ws://" or "wss://"
+static string get_abs_path(const string& request_uri) {
+  const static string ABS_PREFIXS[] = {"http://", "https://", "ws://", "wss://"};
+  bool isAbs = false;
+  for (int i = 0; i < 4; ++i) {
+    if (boost::algorithm::starts_with(request_uri, ABS_PREFIXS[i])) {
+      isAbs = true;
+      break;
+    } 
+  }
+  if (!isAbs) {  // it is not a valid absolute uri
+    return request_uri;
+  }
+  size_t beg_pos = request_uri.find("://") + 3;
+  size_t len = request_uri.size();
+  beg_pos = request_uri.find('/', beg_pos);
+  if (beg_pos == string::npos) return request_uri;
+  return request_uri.substr(beg_pos, len - beg_pos);
+}
+
+req_info::req_info(CephContext *cct, const class RGWEnv *env) : env(env) {
+  method = env->get("REQUEST_METHOD", "");
+  script_uri = env->get("SCRIPT_URI", cct->_conf->rgw_script_uri.c_str());
+  request_uri = env->get("REQUEST_URI", cct->_conf->rgw_request_uri.c_str());
+  if (request_uri[0] != '/') {
+    request_uri = get_abs_path(request_uri);
+  }
+  auto pos = request_uri.find('?');
+  if (pos != string::npos) {
+    request_params = request_uri.substr(pos + 1);
+    request_uri = request_uri.substr(0, pos);
+  } else {
+    request_params = env->get("QUERY_STRING", "");
+  }
+  host = env->get("HTTP_HOST", "");
+
+  // strip off any trailing :port from host (added by CrossFTP and maybe others)
+  size_t colon_offset = host.find_last_of(':');
+  if (colon_offset != string::npos) {
+    bool all_digits = true;
+    for (unsigned i = colon_offset + 1; i < host.size(); ++i) {
+      if (!isdigit(host[i])) {
+	all_digits = false;
+	break;
+      }
+    }
+    if (all_digits) {
+      host.resize(colon_offset);
+    }
+  }
+}
+
+void req_info::rebuild_from(req_info& src)
+{
+  method = src.method;
+  script_uri = src.script_uri;
+  args = src.args;
+  if (src.effective_uri.empty()) {
+    request_uri = src.request_uri;
+  } else {
+    request_uri = src.effective_uri;
+  }
+  effective_uri.clear();
+  host = src.host;
+
+  x_meta_map = src.x_meta_map;
+  x_meta_map.erase("x-amz-date");
+}
+
+
+req_state::req_state(CephContext* _cct, RGWEnv* e, RGWUserInfo* u, uint64_t id)
+  : cct(_cct), user(u),
+    info(_cct, e), id(id)
+{
+  enable_ops_log = e->get_enable_ops_log();
+  enable_usage_log = e->get_enable_usage_log();
+  defer_to_bucket_acls = e->get_defer_to_bucket_acls();
+
+  time = Clock::now();
+}
+
+req_state::~req_state() {
+  delete formatter;
+}
+
+std::ostream& req_state::gen_prefix(std::ostream& out) const
+{
+  auto p = out.precision();
+  return out << "req " << id << ' '
+      << std::setprecision(3) << std::fixed << time_elapsed() // '0.123s'
+      << std::setprecision(p) << std::defaultfloat << ' ';
+}
+
+bool search_err(rgw_http_errors& errs, int err_no, int& http_ret, string& code)
+{
+  auto r = errs.find(err_no);
+  if (r != errs.end()) {
+    http_ret = r->second.first;
+    code = r->second.second;
+    return true;
+  }
+  return false;
+}
+
+void set_req_state_err(struct rgw_err& err,	/* out */
+			int err_no,		/* in  */
+			const int prot_flags)	/* in  */
+{
+  if (err_no < 0)
+    err_no = -err_no;
+
+  err.ret = -err_no;
+
+  if (prot_flags & RGW_REST_SWIFT) {
+    if (search_err(rgw_http_swift_errors, err_no, err.http_ret, err.err_code))
+      return;
+  }
+
+  if (prot_flags & RGW_REST_STS) {
+    if (search_err(rgw_http_sts_errors, err_no, err.http_ret, err.err_code))
+      return;
+  }
+
+  if (prot_flags & RGW_REST_IAM) {
+    if (search_err(rgw_http_iam_errors, err_no, err.http_ret, err.err_code))
+      return;
+  }
+
+  //Default to searching in s3 errors
+  if (search_err(rgw_http_s3_errors, err_no, err.http_ret, err.err_code))
+      return;
+  dout(0) << "WARNING: set_req_state_err err_no=" << err_no
+	<< " resorting to 500" << dendl;
+
+  err.http_ret = 500;
+  err.err_code = "UnknownError";
+}
+
+void set_req_state_err(struct req_state* s, int err_no, const string& err_msg)
+{
+  if (s) {
+    set_req_state_err(s, err_no);
+    if (s->prot_flags & RGW_REST_SWIFT && !err_msg.empty()) {
+      /* TODO(rzarzynski): there never ever should be a check like this one.
+       * It's here only for the sake of the patch's backportability. Further
+       * commits will move the logic to a per-RGWHandler replacement of
+       * the end_header() function. Alternativaly, we might consider making
+       * that just for the dump(). Please take a look on @cbodley's comments
+       * in PR #10690 (https://github.com/ceph/ceph/pull/10690). */
+      s->err.err_code = err_msg;
+    } else {
+      s->err.message = err_msg;
+    }
+  }
+}
+
+void set_req_state_err(struct req_state* s, int err_no)
+{
+  if (s) {
+    set_req_state_err(s->err, err_no, s->prot_flags);
+  }
+}
+
+void dump(struct req_state* s)
+{
+  if (s->format != RGW_FORMAT_HTML)
+    s->formatter->open_object_section("Error");
+  if (!s->err.err_code.empty())
+    s->formatter->dump_string("Code", s->err.err_code);
+  if (!s->err.message.empty())
+    s->formatter->dump_string("Message", s->err.message);
+  if (!s->bucket_name.empty())	// TODO: connect to expose_bucket
+    s->formatter->dump_string("BucketName", s->bucket_name);
+  if (!s->trans_id.empty())	// TODO: connect to expose_bucket or another toggle
+    s->formatter->dump_string("RequestId", s->trans_id);
+  s->formatter->dump_string("HostId", s->host_id);
+  if (s->format != RGW_FORMAT_HTML)
+    s->formatter->close_section();
+}
+
+struct str_len {
+  const char *str;
+  int len;
+};
+
+#define STR_LEN_ENTRY(s) { s, sizeof(s) - 1 }
+
+struct str_len meta_prefixes[] = { STR_LEN_ENTRY("HTTP_X_AMZ"),
+                                   STR_LEN_ENTRY("HTTP_X_GOOG"),
+                                   STR_LEN_ENTRY("HTTP_X_DHO"),
+                                   STR_LEN_ENTRY("HTTP_X_RGW"),
+                                   STR_LEN_ENTRY("HTTP_X_OBJECT"),
+                                   STR_LEN_ENTRY("HTTP_X_CONTAINER"),
+                                   STR_LEN_ENTRY("HTTP_X_ACCOUNT"),
+                                   {NULL, 0} };
+
+void req_info::init_meta_info(bool *found_bad_meta)
+{
+  x_meta_map.clear();
+
+  for (const auto& kv: env->get_map()) {
+    const char *prefix;
+    const string& header_name = kv.first;
+    const string& val = kv.second;
+    for (int prefix_num = 0; (prefix = meta_prefixes[prefix_num].str) != NULL; prefix_num++) {
+      int len = meta_prefixes[prefix_num].len;
+      const char *p = header_name.c_str();
+      if (strncmp(p, prefix, len) == 0) {
+        dout(10) << "meta>> " << p << dendl;
+        const char *name = p+len; /* skip the prefix */
+        int name_len = header_name.size() - len;
+
+        if (found_bad_meta && strncmp(name, "_META_", name_len) == 0)
+          *found_bad_meta = true;
+
+        char name_low[meta_prefixes[0].len + name_len + 1];
+        snprintf(name_low, meta_prefixes[0].len - 5 + name_len + 1, "%s%s", meta_prefixes[0].str + 5 /* skip HTTP_ */, name); // normalize meta prefix
+        int j;
+        for (j = 0; name_low[j]; j++) {
+          if (name_low[j] != '_')
+            name_low[j] = tolower(name_low[j]);
+          else
+            name_low[j] = '-';
+        }
+        name_low[j] = 0;
+
+        auto it = x_meta_map.find(name_low);
+        if (it != x_meta_map.end()) {
+          string old = it->second;
+          boost::algorithm::trim_right(old);
+          old.append(",");
+          old.append(val);
+          x_meta_map[name_low] = old;
+        } else {
+          x_meta_map[name_low] = val;
+        }
+      }
+    }
+  }
+  for (const auto& kv: x_meta_map) {
+    dout(10) << "x>> " << kv.first << ":" << rgw::crypt_sanitize::x_meta_map{kv.first, kv.second} << dendl;
+  }
+}
+
+std::ostream& operator<<(std::ostream& oss, const rgw_err &err)
+{
+  oss << "rgw_err(http_ret=" << err.http_ret << ", err_code='" << err.err_code << "') ";
+  return oss;
+}
+
+string rgw_string_unquote(const string& s)
+{
+  if (s[0] != '"' || s.size() < 2)
+    return s;
+
+  int len;
+  for (len = s.size(); len > 2; --len) {
+    if (s[len - 1] != ' ')
+      break;
+  }
+
+  if (s[len-1] != '"')
+    return s;
+
+  return s.substr(1, len - 2);
+}
+
+static bool check_str_end(const char *s)
+{
+  if (!s)
+    return false;
+
+  while (*s) {
+    if (!isspace(*s))
+      return false;
+    s++;
+  }
+  return true;
+}
+
+static bool check_gmt_end(const char *s)
+{
+  if (!s || !*s)
+    return false;
+
+  while (isspace(*s)) {
+    ++s;
+  }
+
+  /* check for correct timezone */
+  if ((strncmp(s, "GMT", 3) != 0) &&
+      (strncmp(s, "UTC", 3) != 0)) {
+    return false;
+  }
+
+  return true;
+}
+
+static bool parse_rfc850(const char *s, struct tm *t)
+{
+  // FIPS zeroization audit 20191115: this memset is not security related.
+  memset(t, 0, sizeof(*t));
+  return check_gmt_end(strptime(s, "%A, %d-%b-%y %H:%M:%S ", t));
+}
+
+static bool parse_asctime(const char *s, struct tm *t)
+{
+  // FIPS zeroization audit 20191115: this memset is not security related.
+  memset(t, 0, sizeof(*t));
+  return check_str_end(strptime(s, "%a %b %d %H:%M:%S %Y", t));
+}
+
+static bool parse_rfc1123(const char *s, struct tm *t)
+{
+  // FIPS zeroization audit 20191115: this memset is not security related.
+  memset(t, 0, sizeof(*t));
+  return check_gmt_end(strptime(s, "%a, %d %b %Y %H:%M:%S ", t));
+}
+
+static bool parse_rfc1123_alt(const char *s, struct tm *t)
+{
+  // FIPS zeroization audit 20191115: this memset is not security related.
+  memset(t, 0, sizeof(*t));
+  return check_str_end(strptime(s, "%a, %d %b %Y %H:%M:%S %z", t));
+}
+
+bool parse_rfc2616(const char *s, struct tm *t)
+{
+  return parse_rfc850(s, t) || parse_asctime(s, t) || parse_rfc1123(s, t) || parse_rfc1123_alt(s,t);
+}
+
+bool parse_iso8601(const char *s, struct tm *t, uint32_t *pns, bool extended_format)
+{
+  // FIPS zeroization audit 20191115: this memset is not security related.
+  memset(t, 0, sizeof(*t));
+  const char *p;
+
+  if (!s)
+    s = "";
+
+  if (extended_format) {
+    p = strptime(s, "%Y-%m-%dT%T", t);
+    if (!p) {
+      p = strptime(s, "%Y-%m-%d %T", t);
+    }
+  } else {
+    p = strptime(s, "%Y%m%dT%H%M%S", t);
+  }
+  if (!p) {
+    dout(0) << "parse_iso8601 failed" << dendl;
+    return false;
+  }
+  const boost::string_view str = rgw_trim_whitespace(boost::string_view(p));
+  int len = str.size();
+
+  if (len == 0 || (len == 1 && str[0] == 'Z'))
+    return true;
+
+  if (str[0] != '.' ||
+      str[len - 1] != 'Z')
+    return false;
+
+  uint32_t ms;
+  boost::string_view nsstr = str.substr(1,  len - 2);
+  int r = stringtoul(nsstr.to_string(), &ms);
+  if (r < 0)
+    return false;
+
+  if (!pns) {
+    return true;
+  }
+
+  if (nsstr.size() > 9) {
+    nsstr = nsstr.substr(0, 9);
+  }
+
+  uint64_t mul_table[] = { 0,
+    100000000LL,
+    10000000LL,
+    1000000LL,
+    100000LL,
+    10000LL,
+    1000LL,
+    100LL,
+    10LL,
+    1 };
+
+
+  *pns = ms * mul_table[nsstr.size()];
+
+  return true;
+}
+
+int parse_key_value(string& in_str, const char *delim, string& key, string& val)
+{
+  if (delim == NULL)
+    return -EINVAL;
+
+  auto pos = in_str.find(delim);
+  if (pos == string::npos)
+    return -EINVAL;
+
+  key = rgw_trim_whitespace(in_str.substr(0, pos));
+  val = rgw_trim_whitespace(in_str.substr(pos + 1));
+
+  return 0;
+}
+
+int parse_key_value(string& in_str, string& key, string& val)
+{
+  return parse_key_value(in_str, "=", key,val);
+}
+
+boost::optional<std::pair<boost::string_view, boost::string_view>>
+parse_key_value(const boost::string_view& in_str,
+                const boost::string_view& delim)
+{
+  const size_t pos = in_str.find(delim);
+  if (pos == boost::string_view::npos) {
+    return boost::none;
+  }
+
+  const auto key = rgw_trim_whitespace(in_str.substr(0, pos));
+  const auto val = rgw_trim_whitespace(in_str.substr(pos + 1));
+
+  return std::make_pair(key, val);
+}
+
+boost::optional<std::pair<boost::string_view, boost::string_view>>
+parse_key_value(const boost::string_view& in_str)
+{
+  return parse_key_value(in_str, "=");
+}
+
+int parse_time(const char *time_str, real_time *time)
+{
+  struct tm tm;
+  uint32_t ns = 0;
+
+  if (!parse_rfc2616(time_str, &tm) && !parse_iso8601(time_str, &tm, &ns)) {
+    return -EINVAL;
+  }
+
+  time_t sec = internal_timegm(&tm);
+  *time = utime_t(sec, ns).to_real_time();
+
+  return 0;
+}
+
+#define TIME_BUF_SIZE 128
+
+void rgw_to_iso8601(const real_time& t, char *dest, int buf_size)
+{
+  utime_t ut(t);
+
+  char buf[TIME_BUF_SIZE];
+  struct tm result;
+  time_t epoch = ut.sec();
+  struct tm *tmp = gmtime_r(&epoch, &result);
+  if (tmp == NULL)
+    return;
+
+  if (strftime(buf, sizeof(buf), "%Y-%m-%dT%T", tmp) == 0)
+    return;
+
+  snprintf(dest, buf_size, "%s.%03dZ", buf, (int)(ut.usec() / 1000));
+}
+
+void rgw_to_iso8601(const real_time& t, string *dest)
+{
+  char buf[TIME_BUF_SIZE];
+  rgw_to_iso8601(t, buf, sizeof(buf));
+  *dest = buf;
+}
+
+
+string rgw_to_asctime(const utime_t& t)
+{
+  stringstream s;
+  t.asctime(s);
+  return s.str();
+}
+
+/*
+ * calculate the sha1 value of a given msg and key
+ */
+void calc_hmac_sha1(const char *key, int key_len,
+                    const char *msg, int msg_len, char *dest)
+/* destination should be CEPH_CRYPTO_HMACSHA1_DIGESTSIZE bytes long */
+{
+  HMACSHA1 hmac((const unsigned char *)key, key_len);
+  hmac.Update((const unsigned char *)msg, msg_len);
+  hmac.Final((unsigned char *)dest);
+}
+
+/*
+ * calculate the sha256 value of a given msg and key
+ */
+void calc_hmac_sha256(const char *key, int key_len,
+                      const char *msg, int msg_len, char *dest)
+{
+  char hash_sha256[CEPH_CRYPTO_HMACSHA256_DIGESTSIZE];
+
+  HMACSHA256 hmac((const unsigned char *)key, key_len);
+  hmac.Update((const unsigned char *)msg, msg_len);
+  hmac.Final((unsigned char *)hash_sha256);
+
+  memcpy(dest, hash_sha256, CEPH_CRYPTO_HMACSHA256_DIGESTSIZE);
+}
+
+using ceph::crypto::SHA256;
+
+/*
+ * calculate the sha256 hash value of a given msg
+ */
+sha256_digest_t calc_hash_sha256(const boost::string_view& msg)
+{
+  sha256_digest_t hash;
+
+  SHA256 hasher;
+  hasher.Update(reinterpret_cast<const unsigned char*>(msg.data()), msg.size());
+  hasher.Final(hash.v);
+
+  return hash;
+}
+
+SHA256* calc_hash_sha256_open_stream()
+{
+  return new SHA256;
+}
+
+void calc_hash_sha256_update_stream(SHA256 *hash, const char *msg, int len)
+{
+  hash->Update((const unsigned char *)msg, len);
+}
+
+string calc_hash_sha256_close_stream(SHA256 **phash)
+{
+  SHA256 *hash = *phash;
+  if (!hash) {
+    hash = calc_hash_sha256_open_stream();
+  }
+  char hash_sha256[CEPH_CRYPTO_HMACSHA256_DIGESTSIZE];
+
+  hash->Final((unsigned char *)hash_sha256);
+
+  char hex_str[(CEPH_CRYPTO_SHA256_DIGESTSIZE * 2) + 1];
+  buf_to_hex((unsigned char *)hash_sha256, CEPH_CRYPTO_SHA256_DIGESTSIZE, hex_str);
+
+  delete hash;
+  *phash = NULL;
+  
+  return std::string(hex_str);
+}
+
+std::string calc_hash_sha256_restart_stream(SHA256 **phash)
+{
+  const auto hash = calc_hash_sha256_close_stream(phash);
+  *phash = calc_hash_sha256_open_stream();
+
+  return hash;
+}
+
+int NameVal::parse()
+{
+  auto delim_pos = str.find('=');
+  int ret = 0;
+
+  if (delim_pos == string::npos) {
+    name = str;
+    val = "";
+    ret = 1;
+  } else {
+    name = str.substr(0, delim_pos);
+    val = str.substr(delim_pos + 1);
+  }
+
+  return ret; 
+}
+
+int RGWHTTPArgs::parse()
+{
+  int pos = 0;
+  bool end = false;
+
+  if (str.empty())
+    return 0;
+
+  if (str[pos] == '?')
+    pos++;
+
+  while (!end) {
+    int fpos = str.find('&', pos);
+    if (fpos  < pos) {
+       end = true;
+       fpos = str.size(); 
+    }
+    std::string nameval = url_decode(str.substr(pos, fpos - pos), true);
+    NameVal nv(std::move(nameval));
+    int ret = nv.parse();
+    if (ret >= 0) {
+      string& name = nv.get_name();
+      string& val = nv.get_val();
+
+      append(name, val);
+    }
+
+    pos = fpos + 1;  
+  }
+
+  return 0;
+}
+
+void RGWHTTPArgs::append(const string& name, const string& val)
+{
+  if (name.compare(0, sizeof(RGW_SYS_PARAM_PREFIX) - 1, RGW_SYS_PARAM_PREFIX) == 0) {
+    sys_val_map[name] = val;
+  } else {
+    val_map[name] = val;
+  }
+
+  if ((name.compare("acl") == 0) ||
+      (name.compare("cors") == 0) ||
+      (name.compare("notification") == 0) ||
+      (name.compare("location") == 0) ||
+      (name.compare("logging") == 0) ||
+      (name.compare("usage") == 0) ||
+      (name.compare("lifecycle") == 0) ||
+      (name.compare("delete") == 0) ||
+      (name.compare("uploads") == 0) ||
+      (name.compare("partNumber") == 0) ||
+      (name.compare("uploadId") == 0) ||
+      (name.compare("versionId") == 0) ||
+      (name.compare("start-date") == 0) ||
+      (name.compare("end-date") == 0) ||
+      (name.compare("versions") == 0) ||
+      (name.compare("versioning") == 0) ||
+      (name.compare("website") == 0) ||
+      (name.compare("requestPayment") == 0) ||
+      (name.compare("torrent") == 0) ||
+      (name.compare("tagging") == 0) ||
+      (name.compare("append") == 0) ||
+      (name.compare("position") == 0)) {
+    sub_resources[name] = val;
+  } else if (name[0] == 'r') { // root of all evil
+    if ((name.compare("response-content-type") == 0) ||
+        (name.compare("response-content-language") == 0) ||
+        (name.compare("response-expires") == 0) ||
+        (name.compare("response-cache-control") == 0) ||
+        (name.compare("response-content-disposition") == 0) ||
+        (name.compare("response-content-encoding") == 0)) {
+      sub_resources[name] = val;
+      has_resp_modifier = true;
+    }
+  } else if  ((name.compare("subuser") == 0) ||
+              (name.compare("key") == 0) ||
+              (name.compare("caps") == 0) ||
+              (name.compare("index") == 0) ||
+              (name.compare("policy") == 0) ||
+              (name.compare("quota") == 0) ||
+              (name.compare("list") == 0) ||
+              (name.compare("object") == 0)) {
+
+    if (!admin_subresource_added) {
+      sub_resources[name] = "";
+      admin_subresource_added = true;
+    }
+  }
+}
+
+const string& RGWHTTPArgs::get(const string& name, bool *exists) const
+{
+  auto iter = val_map.find(name);
+  bool e = (iter != std::end(val_map));
+  if (exists)
+    *exists = e;
+  if (e)
+    return iter->second;
+  return empty_str;
+}
+
+boost::optional<const std::string&>
+RGWHTTPArgs::get_optional(const std::string& name) const
+{
+  bool exists;
+  const std::string& value = get(name, &exists);
+  if (exists) {
+    return value;
+  } else {
+    return boost::none;
+  }
+}
+
+int RGWHTTPArgs::get_bool(const string& name, bool *val, bool *exists)
+{
+  map<string, string>::iterator iter;
+  iter = val_map.find(name);
+  bool e = (iter != val_map.end());
+  if (exists)
+    *exists = e;
+
+  if (e) {
+    const char *s = iter->second.c_str();
+
+    if (strcasecmp(s, "false") == 0) {
+      *val = false;
+    } else if (strcasecmp(s, "true") == 0) {
+      *val = true;
+    } else {
+      return -EINVAL;
+    }
+  }
+
+  return 0;
+}
+
+int RGWHTTPArgs::get_bool(const char *name, bool *val, bool *exists)
+{
+  string s(name);
+  return get_bool(s, val, exists);
+}
+
+void RGWHTTPArgs::get_bool(const char *name, bool *val, bool def_val)
+{
+  bool exists = false;
+  if ((get_bool(name, val, &exists) < 0) ||
+      !exists) {
+    *val = def_val;
+  }
+}
+
+int RGWHTTPArgs::get_int(const char *name, int *val, int def_val)
+{
+  bool exists = false;
+  string val_str;
+  val_str = get(name, &exists);
+  if (!exists) {
+    *val = def_val;
+    return 0;
+  }
+
+  string err;
+
+  *val = (int)strict_strtol(val_str.c_str(), 10, &err);
+  if (!err.empty()) {
+    *val = def_val;
+    return -EINVAL;
+  }
+  return 0;
+}
+
+string RGWHTTPArgs::sys_get(const string& name, bool * const exists) const
+{
+  const auto iter = sys_val_map.find(name);
+  const bool e = (iter != sys_val_map.end());
+
+  if (exists) {
+    *exists = e;
+  }
+
+  return e ? iter->second : string();
+}
+
+bool rgw_transport_is_secure(CephContext *cct, const RGWEnv& env)
+{
+  const auto& m = env.get_map();
+  // frontend connected with ssl
+  if (m.count("SERVER_PORT_SECURE")) {
+    return true;
+  }
+  // ignore proxy headers unless explicitly enabled
+  if (!cct->_conf->rgw_trust_forwarded_https) {
+    return false;
+  }
+  // https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Forwarded
+  // Forwarded: by=<identifier>; for=<identifier>; host=<host>; proto=<http|https>
+  auto i = m.find("HTTP_FORWARDED");
+  if (i != m.end() && i->second.find("proto=https") != std::string::npos) {
+    return true;
+  }
+  // https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/X-Forwarded-Proto
+  i = m.find("HTTP_X_FORWARDED_PROTO");
+  if (i != m.end() && i->second == "https") {
+    return true;
+  }
+  return false;
+}
+
+namespace {
+Effect eval_or_pass(const boost::optional<Policy>& policy,
+		    const rgw::IAM::Environment& env,
+		    boost::optional<const rgw::auth::Identity&> id,
+		    const uint64_t op,
+		    const ARN& arn) {
+  if (!policy)
+    return Effect::Pass;
+  else
+    return policy->eval(env, id, op, arn);
+}
+
+}
+
+Effect eval_user_policies(const vector<Policy>& user_policies,
+                          const rgw::IAM::Environment& env,
+                          boost::optional<const rgw::auth::Identity&> id,
+                          const uint64_t op,
+                          const ARN& arn) {
+  auto usr_policy_res = Effect::Pass, prev_res = Effect::Pass;
+  for (auto& user_policy : user_policies) {
+    if (usr_policy_res = eval_or_pass(user_policy, env, id, op, arn); usr_policy_res == Effect::Deny)
+      return usr_policy_res;
+    else if (usr_policy_res == Effect::Allow)
+      prev_res = Effect::Allow;
+    else if (usr_policy_res == Effect::Pass && prev_res == Effect::Allow)
+      usr_policy_res = Effect::Allow;
+  }
+  return usr_policy_res;
+}
+
+bool verify_user_permission(const DoutPrefixProvider* dpp,
+                            struct req_state * const s,
+                            RGWAccessControlPolicy * const user_acl,
+                            const vector<rgw::IAM::Policy>& user_policies,
+                            const rgw::ARN& res,
+                            const uint64_t op)
+{
+  auto usr_policy_res = eval_user_policies(user_policies, s->env, boost::none, op, res);
+  if (usr_policy_res == Effect::Deny) {
+    return false;
+  }
+
+  if (usr_policy_res == Effect::Allow) {
+    return true;
+  }
+
+  if (op == rgw::IAM::s3CreateBucket || op == rgw::IAM::s3ListAllMyBuckets) {
+    auto perm = op_to_perm(op);
+
+    return verify_user_permission_no_policy(dpp, s, user_acl, perm);
+  }
+
+  return false;
+}
+
+bool verify_user_permission_no_policy(const DoutPrefixProvider* dpp, struct req_state * const s,
+                            RGWAccessControlPolicy * const user_acl,
+                            const int perm)
+{
+  if (s->auth.identity->get_identity_type() == TYPE_ROLE)
+    return false;
+
+  /* S3 doesn't support account ACLs. */
+  if (!user_acl)
+    return true;
+
+  if ((perm & (int)s->perm_mask) != perm)
+    return false;
+
+  return user_acl->verify_permission(dpp, *s->auth.identity, perm, perm);
+}
+
+bool verify_user_permission(const DoutPrefixProvider* dpp,
+                            struct req_state * const s,
+                            const rgw::ARN& res,
+                            const uint64_t op)
+{
+  return verify_user_permission(dpp, s, s->user_acl.get(), s->iam_user_policies, res, op);
+}
+
+bool verify_user_permission_no_policy(const DoutPrefixProvider* dpp, 
+                                      struct req_state * const s,
+                                      const int perm)
+{
+  return verify_user_permission_no_policy(dpp, s, s->user_acl.get(), perm);
+}
+
+bool verify_requester_payer_permission(struct req_state *s)
+{
+  if (!s->bucket_info.requester_pays)
+    return true;
+
+  if (s->auth.identity->is_owner_of(s->bucket_info.owner))
+    return true;
+  
+  if (s->auth.identity->is_anonymous()) {
+    return false;
+  }
+
+  const char *request_payer = s->info.env->get("HTTP_X_AMZ_REQUEST_PAYER");
+  if (!request_payer) {
+    bool exists;
+    request_payer = s->info.args.get("x-amz-request-payer", &exists).c_str();
+    if (!exists) {
+      return false;
+    }
+  }
+
+  if (strcasecmp(request_payer, "requester") == 0) {
+    return true;
+  }
+
+  return false;
+}
+
+bool verify_bucket_permission(const DoutPrefixProvider* dpp,
+                              struct req_state * const s,
+			      const rgw_bucket& bucket,
+                              RGWAccessControlPolicy * const user_acl,
+                              RGWAccessControlPolicy * const bucket_acl,
+			      const boost::optional<Policy>& bucket_policy,
+                              const vector<Policy>& user_policies,
+                              const uint64_t op)
+{
+  if (!verify_requester_payer_permission(s))
+    return false;
+
+  auto usr_policy_res = eval_user_policies(user_policies, s->env, boost::none, op, ARN(bucket));
+  if (usr_policy_res == Effect::Deny)
+    return false;
+
+  auto r = eval_or_pass(bucket_policy, s->env, *s->auth.identity,
+			op, ARN(bucket));
+  if (r == Effect::Allow)
+    // It looks like S3 ACLs only GRANT permissions rather than
+    // denying them, so this should be safe.
+    return true;
+  else if (r == Effect::Deny)
+    return false;
+  else if (usr_policy_res == Effect::Allow) // r is Effect::Pass at this point
+    return true;
+
+  const auto perm = op_to_perm(op);
+
+  return verify_bucket_permission_no_policy(dpp, s, user_acl, bucket_acl, perm);
+}
+
+bool verify_bucket_permission_no_policy(const DoutPrefixProvider* dpp, struct req_state * const s,
+					RGWAccessControlPolicy * const user_acl,
+					RGWAccessControlPolicy * const bucket_acl,
+					const int perm)
+{
+  if (!bucket_acl)
+    return false;
+
+  if ((perm & (int)s->perm_mask) != perm)
+    return false;
+
+  if (bucket_acl->verify_permission(dpp, *s->auth.identity, perm, perm,
+                                    s->info.env->get("HTTP_REFERER")))
+    return true;
+
+  if (!user_acl)
+    return false;
+
+  return user_acl->verify_permission(dpp, *s->auth.identity, perm, perm);
+}
+
+bool verify_bucket_permission_no_policy(const DoutPrefixProvider* dpp, struct req_state * const s, const int perm)
+{
+  if (!verify_requester_payer_permission(s))
+    return false;
+
+  return verify_bucket_permission_no_policy(dpp,
+                                            s,
+                                            s->user_acl.get(),
+                                            s->bucket_acl.get(),
+                                            perm);
+}
+
+bool verify_bucket_permission(const DoutPrefixProvider* dpp, struct req_state * const s, const uint64_t op)
+{
+  return verify_bucket_permission(dpp, 
+                                  s,
+                                  s->bucket,
+                                  s->user_acl.get(),
+                                  s->bucket_acl.get(),
+                                  s->iam_policy,
+                                  s->iam_user_policies,
+                                  op);
+}
+
+// Authorize anyone permitted by the policy and the bucket owner
+// unless explicitly denied by the policy.
+
+int verify_bucket_owner_or_policy(struct req_state* const s,
+				  const uint64_t op)
+{
+  auto e = eval_or_pass(s->iam_policy,
+			s->env, *s->auth.identity,
+			op, ARN(s->bucket));
+  if (e == Effect::Allow ||
+      (e == Effect::Pass &&
+       s->auth.identity->is_owner_of(s->bucket_owner.get_id()))) {
+    return 0;
+  } else {
+    return -EACCES;
+  }
+}
+
+
+static inline bool check_deferred_bucket_perms(const DoutPrefixProvider* dpp,
+                                               struct req_state * const s,
+					       const rgw_bucket& bucket,
+					       RGWAccessControlPolicy * const user_acl,
+					       RGWAccessControlPolicy * const bucket_acl,
+					       const boost::optional<Policy>& bucket_policy,
+                 const vector<Policy>& user_policies,
+					       const uint8_t deferred_check,
+					       const uint64_t op)
+{
+  return (s->defer_to_bucket_acls == deferred_check \
+	  && verify_bucket_permission(dpp, s, bucket, user_acl, bucket_acl, bucket_policy, user_policies,op));
+}
+
+static inline bool check_deferred_bucket_only_acl(const DoutPrefixProvider* dpp,
+                                                  struct req_state * const s,
+						  RGWAccessControlPolicy * const user_acl,
+						  RGWAccessControlPolicy * const bucket_acl,
+						  const uint8_t deferred_check,
+						  const int perm)
+{
+  return (s->defer_to_bucket_acls == deferred_check \
+	  && verify_bucket_permission_no_policy(dpp, s, user_acl, bucket_acl, perm));
+}
+
+bool verify_object_permission(const DoutPrefixProvider* dpp, struct req_state * const s,
+			      const rgw_obj& obj,
+                              RGWAccessControlPolicy * const user_acl,
+                              RGWAccessControlPolicy * const bucket_acl,
+                              RGWAccessControlPolicy * const object_acl,
+                              const boost::optional<Policy>& bucket_policy,
+                              const vector<Policy>& user_policies,
+                              const uint64_t op)
+{
+  if (!verify_requester_payer_permission(s))
+    return false;
+
+  auto usr_policy_res = eval_user_policies(user_policies, s->env, boost::none, op, ARN(obj));
+  if (usr_policy_res == Effect::Deny)
+    return false;
+
+  auto r = eval_or_pass(bucket_policy, s->env, *s->auth.identity, op, ARN(obj));
+  if (r == Effect::Allow)
+    // It looks like S3 ACLs only GRANT permissions rather than
+    // denying them, so this should be safe.
+    return true;
+  else if (r == Effect::Deny)
+    return false;
+  else if (usr_policy_res == Effect::Allow)
+    return true;
+
+  const auto perm = op_to_perm(op);
+
+  if (check_deferred_bucket_perms(dpp, s, obj.bucket, user_acl, bucket_acl, bucket_policy,
+				  user_policies, RGW_DEFER_TO_BUCKET_ACLS_RECURSE, op) ||
+      check_deferred_bucket_perms(dpp, s, obj.bucket, user_acl, bucket_acl, bucket_policy,
+				  user_policies, RGW_DEFER_TO_BUCKET_ACLS_FULL_CONTROL, rgw::IAM::s3All)) {
+    return true;
+  }
+
+  if (!object_acl) {
+    return false;
+  }
+
+  bool ret = object_acl->verify_permission(dpp, *s->auth.identity, s->perm_mask, perm);
+  if (ret) {
+    return true;
+  }
+
+  if (!s->cct->_conf->rgw_enforce_swift_acls)
+    return ret;
+
+  if ((perm & (int)s->perm_mask) != perm)
+    return false;
+
+  int swift_perm = 0;
+  if (perm & (RGW_PERM_READ | RGW_PERM_READ_ACP))
+    swift_perm |= RGW_PERM_READ_OBJS;
+  if (perm & RGW_PERM_WRITE)
+    swift_perm |= RGW_PERM_WRITE_OBJS;
+
+  if (!swift_perm)
+    return false;
+
+  /* we already verified the user mask above, so we pass swift_perm as the mask here,
+     otherwise the mask might not cover the swift permissions bits */
+  if (bucket_acl->verify_permission(dpp, *s->auth.identity, swift_perm, swift_perm,
+                                    s->info.env->get("HTTP_REFERER")))
+    return true;
+
+  if (!user_acl)
+    return false;
+
+  return user_acl->verify_permission(dpp, *s->auth.identity, swift_perm, swift_perm);
+}
+
+bool verify_object_permission_no_policy(const DoutPrefixProvider* dpp,
+                                        struct req_state * const s,
+					RGWAccessControlPolicy * const user_acl,
+					RGWAccessControlPolicy * const bucket_acl,
+					RGWAccessControlPolicy * const object_acl,
+					const int perm)
+{
+  if (check_deferred_bucket_only_acl(dpp, s, user_acl, bucket_acl, RGW_DEFER_TO_BUCKET_ACLS_RECURSE, perm) ||
+      check_deferred_bucket_only_acl(dpp, s, user_acl, bucket_acl, RGW_DEFER_TO_BUCKET_ACLS_FULL_CONTROL, RGW_PERM_FULL_CONTROL)) {
+    return true;
+  }
+
+  if (!object_acl) {
+    return false;
+  }
+
+  bool ret = object_acl->verify_permission(dpp, *s->auth.identity, s->perm_mask, perm);
+  if (ret) {
+    return true;
+  }
+
+  if (!s->cct->_conf->rgw_enforce_swift_acls)
+    return ret;
+
+  if ((perm & (int)s->perm_mask) != perm)
+    return false;
+
+  int swift_perm = 0;
+  if (perm & (RGW_PERM_READ | RGW_PERM_READ_ACP))
+    swift_perm |= RGW_PERM_READ_OBJS;
+  if (perm & RGW_PERM_WRITE)
+    swift_perm |= RGW_PERM_WRITE_OBJS;
+
+  if (!swift_perm)
+    return false;
+
+  /* we already verified the user mask above, so we pass swift_perm as the mask here,
+     otherwise the mask might not cover the swift permissions bits */
+  if (bucket_acl->verify_permission(dpp, *s->auth.identity, swift_perm, swift_perm,
+                                    s->info.env->get("HTTP_REFERER")))
+    return true;
+
+  if (!user_acl)
+    return false;
+
+  return user_acl->verify_permission(dpp, *s->auth.identity, swift_perm, swift_perm);
+}
+
+bool verify_object_permission_no_policy(const DoutPrefixProvider* dpp, struct req_state *s, int perm)
+{
+  if (!verify_requester_payer_permission(s))
+    return false;
+
+  return verify_object_permission_no_policy(dpp,
+                                            s,
+                                            s->user_acl.get(),
+                                            s->bucket_acl.get(),
+                                            s->object_acl.get(),
+                                            perm);
+}
+
+bool verify_object_permission(const DoutPrefixProvider* dpp, struct req_state *s, uint64_t op)
+{
+  return verify_object_permission(dpp,
+                                  s,
+                                  rgw_obj(s->bucket, s->object),
+                                  s->user_acl.get(),
+                                  s->bucket_acl.get(),
+                                  s->object_acl.get(),
+                                  s->iam_policy,
+                                  s->iam_user_policies,
+                                  op);
+}
+
+class HexTable
+{
+  char table[256];
+
+public:
+  HexTable() {
+    // FIPS zeroization audit 20191115: this memset is not security related.
+    memset(table, -1, sizeof(table));
+    int i;
+    for (i = '0'; i<='9'; i++)
+      table[i] = i - '0';
+    for (i = 'A'; i<='F'; i++)
+      table[i] = i - 'A' + 0xa;
+    for (i = 'a'; i<='f'; i++)
+      table[i] = i - 'a' + 0xa;
+  }
+
+  char to_num(char c) {
+    return table[(int)c];
+  }
+};
+
+static char hex_to_num(char c)
+{
+  static HexTable hex_table;
+  return hex_table.to_num(c);
+}
+
+std::string url_decode(const boost::string_view& src_str, bool in_query)
+{
+  std::string dest_str;
+  dest_str.reserve(src_str.length() + 1);
+
+  for (auto src = std::begin(src_str); src != std::end(src_str); ++src) {
+    if (*src != '%') {
+      if (!in_query || *src != '+') {
+        if (*src == '?') {
+          in_query = true;
+        }
+        dest_str.push_back(*src);
+      } else {
+        dest_str.push_back(' ');
+      }
+    } else {
+      /* 3 == strlen("%%XX") */
+      if (std::distance(src, std::end(src_str)) < 3) {
+        break;
+      }
+
+      src++;
+      const char c1 = hex_to_num(*src++);
+      const char c2 = hex_to_num(*src);
+      if (c1 < 0 || c2 < 0) {
+        return std::string();
+      } else {
+        dest_str.push_back(c1 << 4 | c2);
+      }
+    }
+  }
+
+  return dest_str;
+}
+
+void rgw_uri_escape_char(char c, string& dst)
+{
+  char buf[16];
+  snprintf(buf, sizeof(buf), "%%%.2X", (int)(unsigned char)c);
+  dst.append(buf);
+}
+
+static bool char_needs_url_encoding(char c)
+{
+  if (c <= 0x20 || c >= 0x7f)
+    return true;
+
+  switch (c) {
+    case 0x22:
+    case 0x23:
+    case 0x25:
+    case 0x26:
+    case 0x2B:
+    case 0x2C:
+    case 0x2F:
+    case 0x3A:
+    case 0x3B:
+    case 0x3C:
+    case 0x3E:
+    case 0x3D:
+    case 0x3F:
+    case 0x40:
+    case 0x5B:
+    case 0x5D:
+    case 0x5C:
+    case 0x5E:
+    case 0x60:
+    case 0x7B:
+    case 0x7D:
+      return true;
+  }
+  return false;
+}
+
+void url_encode(const string& src, string& dst, bool encode_slash)
+{
+  const char *p = src.c_str();
+  for (unsigned i = 0; i < src.size(); i++, p++) {
+    if ((!encode_slash && *p == 0x2F) || !char_needs_url_encoding(*p)) {
+      dst.append(p, 1);
+    }else {
+      rgw_uri_escape_char(*p, dst);
+    }
+  }
+}
+
+std::string url_encode(const std::string& src, bool encode_slash)
+{
+  std::string dst;
+  url_encode(src, dst, encode_slash);
+
+  return dst;
+}
+
+string rgw_trim_whitespace(const string& src)
+{
+  if (src.empty()) {
+    return string();
+  }
+
+  int start = 0;
+  for (; start != (int)src.size(); start++) {
+    if (!isspace(src[start]))
+      break;
+  }
+
+  int end = src.size() - 1;
+  if (end < start) {
+    return string();
+  }
+
+  for (; end > start; end--) {
+    if (!isspace(src[end]))
+      break;
+  }
+
+  return src.substr(start, end - start + 1);
+}
+
+boost::string_view rgw_trim_whitespace(const boost::string_view& src)
+{
+  boost::string_view res = src;
+
+  while (res.size() > 0 && std::isspace(res.front())) {
+    res.remove_prefix(1);
+  }
+  while (res.size() > 0 && std::isspace(res.back())) {
+    res.remove_suffix(1);
+  }
+  return res;
+}
+
+string rgw_trim_quotes(const string& val)
+{
+  string s = rgw_trim_whitespace(val);
+  if (s.size() < 2)
+    return s;
+
+  int start = 0;
+  int end = s.size() - 1;
+  int quotes_count = 0;
+
+  if (s[start] == '"') {
+    start++;
+    quotes_count++;
+  }
+  if (s[end] == '"') {
+    end--;
+    quotes_count++;
+  }
+  if (quotes_count == 2) {
+    return s.substr(start, end - start + 1);
+  }
+  return s;
+}
+
+struct rgw_name_to_flag {
+  const char *type_name;
+  uint32_t flag;
+};
+
+static int parse_list_of_flags(struct rgw_name_to_flag *mapping,
+                               const string& str, uint32_t *perm)
+{
+  list<string> strs;
+  get_str_list(str, strs);
+  list<string>::iterator iter;
+  uint32_t v = 0;
+  for (iter = strs.begin(); iter != strs.end(); ++iter) {
+    string& s = *iter;
+    for (int i = 0; mapping[i].type_name; i++) {
+      if (s.compare(mapping[i].type_name) == 0)
+        v |= mapping[i].flag;
+    }
+  }
+
+  *perm = v;
+  return 0;
+}
+
+static struct rgw_name_to_flag cap_names[] = { {"*",     RGW_CAP_ALL},
+                  {"read",  RGW_CAP_READ},
+		  {"write", RGW_CAP_WRITE},
+		  {NULL, 0} };
+
+int RGWUserCaps::parse_cap_perm(const string& str, uint32_t *perm)
+{
+  return parse_list_of_flags(cap_names, str, perm);
+}
+
+int RGWUserCaps::get_cap(const string& cap, string& type, uint32_t *pperm)
+{
+  int pos = cap.find('=');
+  if (pos >= 0) {
+    type = rgw_trim_whitespace(cap.substr(0, pos));
+  }
+
+  if (!is_valid_cap_type(type))
+    return -ERR_INVALID_CAP;
+
+  string cap_perm;
+  uint32_t perm = 0;
+  if (pos < (int)cap.size() - 1) {
+    cap_perm = cap.substr(pos + 1);
+    int r = RGWUserCaps::parse_cap_perm(cap_perm, &perm);
+    if (r < 0)
+      return r;
+  }
+
+  *pperm = perm;
+
+  return 0;
+}
+
+int RGWUserCaps::add_cap(const string& cap)
+{
+  uint32_t perm;
+  string type;
+
+  int r = get_cap(cap, type, &perm);
+  if (r < 0)
+    return r;
+
+  caps[type] |= perm;
+
+  return 0;
+}
+
+int RGWUserCaps::remove_cap(const string& cap)
+{
+  uint32_t perm;
+  string type;
+
+  int r = get_cap(cap, type, &perm);
+  if (r < 0)
+    return r;
+
+  map<string, uint32_t>::iterator iter = caps.find(type);
+  if (iter == caps.end())
+    return 0;
+
+  uint32_t& old_perm = iter->second;
+  old_perm &= ~perm;
+  if (!old_perm)
+    caps.erase(iter);
+
+  return 0;
+}
+
+int RGWUserCaps::add_from_string(const string& str)
+{
+  int start = 0;
+  do {
+    auto end = str.find(';', start);
+    if (end == string::npos)
+      end = str.size();
+
+    int r = add_cap(str.substr(start, end - start));
+    if (r < 0)
+      return r;
+
+    start = end + 1;
+  } while (start < (int)str.size());
+
+  return 0;
+}
+
+int RGWUserCaps::remove_from_string(const string& str)
+{
+  int start = 0;
+  do {
+    auto end = str.find(';', start);
+    if (end == string::npos)
+      end = str.size();
+
+    int r = remove_cap(str.substr(start, end - start));
+    if (r < 0)
+      return r;
+
+    start = end + 1;
+  } while (start < (int)str.size());
+
+  return 0;
+}
+
+void RGWUserCaps::dump(Formatter *f) const
+{
+  dump(f, "caps");
+}
+
+void RGWUserCaps::dump(Formatter *f, const char *name) const
+{
+  f->open_array_section(name);
+  map<string, uint32_t>::const_iterator iter;
+  for (iter = caps.begin(); iter != caps.end(); ++iter)
+  {
+    f->open_object_section("cap");
+    f->dump_string("type", iter->first);
+    uint32_t perm = iter->second;
+    string perm_str;
+    for (int i=0; cap_names[i].type_name; i++) {
+      if ((perm & cap_names[i].flag) == cap_names[i].flag) {
+	if (perm_str.size())
+	  perm_str.append(", ");
+
+	perm_str.append(cap_names[i].type_name);
+	perm &= ~cap_names[i].flag;
+      }
+    }
+    if (perm_str.empty())
+      perm_str = "<none>";
+
+    f->dump_string("perm", perm_str);
+    f->close_section();
+  }
+
+  f->close_section();
+}
+
+struct RGWUserCap {
+  string type;
+  uint32_t perm;
+
+  void decode_json(JSONObj *obj) {
+    JSONDecoder::decode_json("type", type, obj);
+    string perm_str;
+    JSONDecoder::decode_json("perm", perm_str, obj);
+    if (RGWUserCaps::parse_cap_perm(perm_str, &perm) < 0) {
+      throw JSONDecoder::err("failed to parse permissions");
+    }
+  }
+};
+
+void RGWUserCaps::decode_json(JSONObj *obj)
+{
+  list<RGWUserCap> caps_list;
+  decode_json_obj(caps_list, obj);
+
+  list<RGWUserCap>::iterator iter;
+  for (iter = caps_list.begin(); iter != caps_list.end(); ++iter) {
+    RGWUserCap& cap = *iter;
+    caps[cap.type] = cap.perm;
+  }
+}
+
+int RGWUserCaps::check_cap(const string& cap, uint32_t perm)
+{
+  map<string, uint32_t>::iterator iter = caps.find(cap);
+
+  if ((iter == caps.end()) ||
+      (iter->second & perm) != perm) {
+    return -EPERM;
+  }
+
+  return 0;
+}
+
+bool RGWUserCaps::is_valid_cap_type(const string& tp)
+{
+  static const char *cap_type[] = { "user",
+                                    "users",
+                                    "buckets",
+                                    "metadata",
+                                    "usage",
+                                    "zone",
+                                    "bilog",
+                                    "mdlog",
+                                    "datalog",
+                                    "roles",
+                                    "user-policy"};
+
+  for (unsigned int i = 0; i < sizeof(cap_type) / sizeof(char *); ++i) {
+    if (tp.compare(cap_type[i]) == 0) {
+      return true;
+    }
+  }
+
+  return false;
+}
+
+void rgw_pool::from_str(const string& s)
+{
+  size_t pos = rgw_unescape_str(s, 0, '\\', ':', &name);
+  if (pos != string::npos) {
+    pos = rgw_unescape_str(s, pos, '\\', ':', &ns);
+    /* ignore return; if pos != string::npos it means that we had a colon
+     * in the middle of ns that wasn't escaped, we're going to stop there
+     */
+  }
+}
+
+string rgw_pool::to_str() const
+{
+  string esc_name;
+  rgw_escape_str(name, '\\', ':', &esc_name);
+  if (ns.empty()) {
+    return esc_name;
+  }
+  string esc_ns;
+  rgw_escape_str(ns, '\\', ':', &esc_ns);
+  return esc_name + ":" + esc_ns;
+}
+
+void rgw_raw_obj::decode_from_rgw_obj(bufferlist::const_iterator& bl)
+{
+  using ceph::decode;
+  rgw_obj old_obj;
+  decode(old_obj, bl);
+
+  get_obj_bucket_and_oid_loc(old_obj, oid, loc);
+  pool = old_obj.get_explicit_data_pool();
+}
+
+std::string rgw_bucket::get_key(char tenant_delim, char id_delim, size_t reserve) const
+{
+  const size_t max_len = tenant.size() + sizeof(tenant_delim) +
+      name.size() + sizeof(id_delim) + bucket_id.size() + reserve;
+
+  std::string key;
+  key.reserve(max_len);
+  if (!tenant.empty() && tenant_delim) {
+    key.append(tenant);
+    key.append(1, tenant_delim);
+  }
+  key.append(name);
+  if (!bucket_id.empty() && id_delim) {
+    key.append(1, id_delim);
+    key.append(bucket_id);
+  }
+  return key;
+}
+
+std::string rgw_bucket_shard::get_key(char tenant_delim, char id_delim,
+                                      char shard_delim) const
+{
+  static constexpr size_t shard_len{12}; // ":4294967295\0"
+  auto key = bucket.get_key(tenant_delim, id_delim, shard_len);
+  if (shard_id >= 0 && shard_delim) {
+    key.append(1, shard_delim);
+    key.append(std::to_string(shard_id));
+  }
+  return key;
+}
+
+static struct rgw_name_to_flag op_type_mapping[] = { {"*",  RGW_OP_TYPE_ALL},
+                  {"read",  RGW_OP_TYPE_READ},
+		  {"write", RGW_OP_TYPE_WRITE},
+		  {"delete", RGW_OP_TYPE_DELETE},
+		  {NULL, 0} };
+
+
+int rgw_parse_op_type_list(const string& str, uint32_t *perm)
+{
+  return parse_list_of_flags(op_type_mapping, str, perm);
+}
+
+bool match_policy(boost::string_view pattern, boost::string_view input,
+                  uint32_t flag)
+{
+  const uint32_t flag2 = flag & (MATCH_POLICY_ACTION|MATCH_POLICY_ARN) ?
+      MATCH_CASE_INSENSITIVE : 0;
+  const bool colonblocks = !(flag & (MATCH_POLICY_RESOURCE |
+				     MATCH_POLICY_STRING));
+
+  const auto npos = boost::string_view::npos;
+  boost::string_view::size_type last_pos_input = 0, last_pos_pattern = 0;
+  while (true) {
+    auto cur_pos_input = colonblocks ? input.find(":", last_pos_input) : npos;
+    auto cur_pos_pattern =
+      colonblocks ? pattern.find(":", last_pos_pattern) : npos;
+
+    auto substr_input = input.substr(last_pos_input, cur_pos_input);
+    auto substr_pattern = pattern.substr(last_pos_pattern, cur_pos_pattern);
+
+    if (!match_wildcards(substr_pattern, substr_input, flag2))
+      return false;
+
+    if (cur_pos_pattern == npos)
+      return cur_pos_input == npos;
+    if (cur_pos_input == npos)
+      return false;
+
+    last_pos_pattern = cur_pos_pattern + 1;
+    last_pos_input = cur_pos_input + 1;
+  }
+}
+
+/*
+ * make attrs look-like-this
+ * converts underscores to dashes
+ */
+string lowercase_dash_http_attr(const string& orig)
+{
+  const char *s = orig.c_str();
+  char buf[orig.size() + 1];
+  buf[orig.size()] = '\0';
+
+  for (size_t i = 0; i < orig.size(); ++i, ++s) {
+    switch (*s) {
+      case '_':
+        buf[i] = '-';
+        break;
+      default:
+        buf[i] = tolower(*s);
+    }
+  }
+  return string(buf);
+}
+
+/*
+ * make attrs Look-Like-This
+ * converts underscores to dashes
+ */
+string camelcase_dash_http_attr(const string& orig)
+{
+  const char *s = orig.c_str();
+  char buf[orig.size() + 1];
+  buf[orig.size()] = '\0';
+
+  bool last_sep = true;
+
+  for (size_t i = 0; i < orig.size(); ++i, ++s) {
+    switch (*s) {
+      case '_':
+      case '-':
+        buf[i] = '-';
+        last_sep = true;
+        break;
+      default:
+        if (last_sep) {
+          buf[i] = toupper(*s);
+        } else {
+          buf[i] = tolower(*s);
+        }
+        last_sep = false;
+    }
+  }
+  return string(buf);
+}