Adding upstream version 14.2.21.upstream/14.2.21upstream

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

1 files changed, 3093 insertions, 0 deletions

diff --git a/src/rgw/rgw_rest_swift.cc b/src/rgw/rgw_rest_swift.cc
new file mode 100644
index 00000000..e1d8095e
--- /dev/null
+++ b/src/rgw/rgw_rest_swift.cc
@@ -0,0 +1,3093 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#include <boost/algorithm/string/predicate.hpp>
+#include <boost/format.hpp>
+#include <boost/optional.hpp>
+#include <boost/utility/in_place_factory.hpp>
+
+#include "include/ceph_assert.h"
+#include "ceph_ver.h"
+
+#include "common/Formatter.h"
+#include "common/utf8.h"
+#include "common/ceph_json.h"
+
+#include "rgw_rest_swift.h"
+#include "rgw_acl_swift.h"
+#include "rgw_cors_swift.h"
+#include "rgw_formats.h"
+#include "rgw_client_io.h"
+
+#include "rgw_auth.h"
+#include "rgw_swift_auth.h"
+
+#include "rgw_request.h"
+#include "rgw_process.h"
+
+#include "rgw_zone.h"
+
+#include "services/svc_zone.h"
+
+#include <array>
+#include <sstream>
+#include <memory>
+
+#include <boost/utility/string_ref.hpp>
+
+#define dout_context g_ceph_context
+#define dout_subsys ceph_subsys_rgw
+
+int RGWListBuckets_ObjStore_SWIFT::get_params()
+{
+  prefix = s->info.args.get("prefix");
+  marker = s->info.args.get("marker");
+  end_marker = s->info.args.get("end_marker");
+  wants_reversed = s->info.args.exists("reverse");
+
+  if (wants_reversed) {
+    std::swap(marker, end_marker);
+  }
+
+  std::string limit_str = s->info.args.get("limit");
+  if (!limit_str.empty()) {
+    std::string err;
+    long l = strict_strtol(limit_str.c_str(), 10, &err);
+    if (!err.empty()) {
+      return -EINVAL;
+    }
+
+    if (l > (long)limit_max || l < 0) {
+      return -ERR_PRECONDITION_FAILED;
+    }
+
+    limit = (uint64_t)l;
+  }
+
+  if (s->cct->_conf->rgw_swift_need_stats) {
+    bool stats, exists;
+    int r = s->info.args.get_bool("stats", &stats, &exists);
+
+    if (r < 0) {
+      return r;
+    }
+
+    if (exists) {
+      need_stats = stats;
+    }
+  } else {
+    need_stats = false;
+  }
+
+  return 0;
+}
+
+static void dump_account_metadata(struct req_state * const s,
+                                  const RGWUsageStats& global_stats,
+                                  const std::map<std::string, RGWUsageStats> &policies_stats,
+                                  /* const */map<string, bufferlist>& attrs,
+                                  const RGWQuotaInfo& quota,
+                                  const RGWAccessControlPolicy_SWIFTAcct &policy)
+{
+  /* Adding X-Timestamp to keep align with Swift API */
+  dump_header(s, "X-Timestamp", ceph_clock_now());
+
+  dump_header(s, "X-Account-Container-Count", global_stats.buckets_count);
+  dump_header(s, "X-Account-Object-Count", global_stats.objects_count);
+  dump_header(s, "X-Account-Bytes-Used", global_stats.bytes_used);
+  dump_header(s, "X-Account-Bytes-Used-Actual", global_stats.bytes_used_rounded);
+
+  for (const auto& kv : policies_stats) {
+    const auto& policy_name = camelcase_dash_http_attr(kv.first);
+    const auto& policy_stats = kv.second;
+
+    dump_header_infixed(s, "X-Account-Storage-Policy-", policy_name,
+                        "-Container-Count", policy_stats.buckets_count);
+    dump_header_infixed(s, "X-Account-Storage-Policy-", policy_name,
+                        "-Object-Count", policy_stats.objects_count);
+    dump_header_infixed(s, "X-Account-Storage-Policy-", policy_name,
+                        "-Bytes-Used", policy_stats.bytes_used);
+    dump_header_infixed(s, "X-Account-Storage-Policy-", policy_name,
+                        "-Bytes-Used-Actual", policy_stats.bytes_used_rounded);
+  }
+
+  /* Dump TempURL-related stuff */
+  if (s->perm_mask == RGW_PERM_FULL_CONTROL) {
+    auto iter = s->user->temp_url_keys.find(0);
+    if (iter != std::end(s->user->temp_url_keys) && ! iter->second.empty()) {
+      dump_header(s, "X-Account-Meta-Temp-Url-Key", iter->second);
+    }
+
+    iter = s->user->temp_url_keys.find(1);
+    if (iter != std::end(s->user->temp_url_keys) && ! iter->second.empty()) {
+      dump_header(s, "X-Account-Meta-Temp-Url-Key-2", iter->second);
+    }
+  }
+
+  /* Dump quota headers. */
+  if (quota.enabled) {
+    if (quota.max_size >= 0) {
+      dump_header(s, "X-Account-Meta-Quota-Bytes", quota.max_size);
+    }
+
+    /* Limit on the number of objects in a given account is a RadosGW's
+     * extension. Swift's account quota WSGI filter doesn't support it. */
+    if (quota.max_objects >= 0) {
+      dump_header(s, "X-Account-Meta-Quota-Count", quota.max_objects);
+    }
+  }
+
+  /* Dump user-defined metadata items and generic attrs. */
+  const size_t PREFIX_LEN = sizeof(RGW_ATTR_META_PREFIX) - 1;
+  map<string, bufferlist>::iterator iter;
+  for (iter = attrs.lower_bound(RGW_ATTR_PREFIX); iter != attrs.end(); ++iter) {
+    const char *name = iter->first.c_str();
+    map<string, string>::const_iterator geniter = rgw_to_http_attrs.find(name);
+
+    if (geniter != rgw_to_http_attrs.end()) {
+      dump_header(s, geniter->second, iter->second);
+    } else if (strncmp(name, RGW_ATTR_META_PREFIX, PREFIX_LEN) == 0) {
+      dump_header_prefixed(s, "X-Account-Meta-",
+                           camelcase_dash_http_attr(name + PREFIX_LEN),
+                           iter->second);
+    }
+  }
+
+  /* Dump account ACLs */
+  auto account_acls = policy.to_str();
+  if (account_acls) {
+    dump_header(s, "X-Account-Access-Control", std::move(*account_acls));
+  }
+}
+
+void RGWListBuckets_ObjStore_SWIFT::send_response_begin(bool has_buckets)
+{
+  if (op_ret) {
+    set_req_state_err(s, op_ret);
+  } else if (!has_buckets && s->format == RGW_FORMAT_PLAIN) {
+    op_ret = STATUS_NO_CONTENT;
+    set_req_state_err(s, op_ret);
+  }
+
+  if (! s->cct->_conf->rgw_swift_enforce_content_length) {
+    /* Adding account stats in the header to keep align with Swift API */
+    dump_account_metadata(s,
+            global_stats,
+            policies_stats,
+            attrs,
+            user_quota,
+            static_cast<RGWAccessControlPolicy_SWIFTAcct&>(*s->user_acl));
+    dump_errno(s);
+    dump_header(s, "Accept-Ranges", "bytes");
+    end_header(s, NULL, NULL, NO_CONTENT_LENGTH, true);
+  }
+
+  if (! op_ret) {
+    dump_start(s);
+    s->formatter->open_array_section_with_attrs("account",
+            FormatterAttrs("name", s->user->display_name.c_str(), NULL));
+
+    sent_data = true;
+  }
+}
+
+void RGWListBuckets_ObjStore_SWIFT::handle_listing_chunk(RGWUserBuckets&& buckets)
+{
+  if (wants_reversed) {
+    /* Just store in the reversal buffer. Its content will be handled later,
+     * in send_response_end(). */
+    reverse_buffer.emplace(std::begin(reverse_buffer), std::move(buckets));
+  } else {
+    return send_response_data(buckets);
+  }
+}
+
+void RGWListBuckets_ObjStore_SWIFT::send_response_data(RGWUserBuckets& buckets)
+{
+  if (! sent_data) {
+    return;
+  }
+
+  /* Take care of the prefix parameter of Swift API. There is no business
+   * in applying the filter earlier as we really need to go through all
+   * entries regardless of it (the headers like X-Account-Container-Count
+   * aren't affected by specifying prefix). */
+  const std::map<std::string, RGWBucketEnt>& m = buckets.get_buckets();
+  for (auto iter = m.lower_bound(prefix);
+       iter != m.end() && boost::algorithm::starts_with(iter->first, prefix);
+       ++iter) {
+    dump_bucket_entry(iter->second);
+  }
+}
+
+void RGWListBuckets_ObjStore_SWIFT::dump_bucket_entry(const RGWBucketEnt& obj)
+{
+  s->formatter->open_object_section("container");
+  s->formatter->dump_string("name", obj.bucket.name);
+
+  if (need_stats) {
+    s->formatter->dump_int("count", obj.count);
+    s->formatter->dump_int("bytes", obj.size);
+  }
+
+  s->formatter->close_section();
+
+  if (! s->cct->_conf->rgw_swift_enforce_content_length) {
+    rgw_flush_formatter(s, s->formatter);
+  }
+}
+
+void RGWListBuckets_ObjStore_SWIFT::send_response_data_reversed(RGWUserBuckets& buckets)
+{
+  if (! sent_data) {
+    return;
+  }
+
+  /* Take care of the prefix parameter of Swift API. There is no business
+   * in applying the filter earlier as we really need to go through all
+   * entries regardless of it (the headers like X-Account-Container-Count
+   * aren't affected by specifying prefix). */
+  std::map<std::string, RGWBucketEnt>& m = buckets.get_buckets();
+
+  auto iter = m.rbegin();
+  for (/* initialized above */;
+       iter != m.rend() && !boost::algorithm::starts_with(iter->first, prefix);
+       ++iter) {
+    /* NOP */;
+  }
+
+  for (/* iter carried */;
+       iter != m.rend() && boost::algorithm::starts_with(iter->first, prefix);
+       ++iter) {
+    dump_bucket_entry(iter->second);
+  }
+}
+
+void RGWListBuckets_ObjStore_SWIFT::send_response_end()
+{
+  if (wants_reversed) {
+    for (auto& buckets : reverse_buffer) {
+      send_response_data_reversed(buckets);
+    }
+  }
+
+  if (sent_data) {
+    s->formatter->close_section();
+  }
+
+  if (s->cct->_conf->rgw_swift_enforce_content_length) {
+    /* Adding account stats in the header to keep align with Swift API */
+    dump_account_metadata(s,
+            global_stats,
+            policies_stats,
+            attrs,
+            user_quota,
+            static_cast<RGWAccessControlPolicy_SWIFTAcct&>(*s->user_acl));
+    dump_errno(s);
+    end_header(s, nullptr, nullptr, s->formatter->get_len(), true);
+  }
+
+  if (sent_data || s->cct->_conf->rgw_swift_enforce_content_length) {
+    rgw_flush_formatter_and_reset(s, s->formatter);
+  }
+}
+
+int RGWListBucket_ObjStore_SWIFT::get_params()
+{
+  prefix = s->info.args.get("prefix");
+  marker = s->info.args.get("marker");
+  end_marker = s->info.args.get("end_marker");
+  max_keys = s->info.args.get("limit");
+
+  // non-standard
+  s->info.args.get_bool("allow_unordered", &allow_unordered, false);
+
+  delimiter = s->info.args.get("delimiter");
+
+  op_ret = parse_max_keys();
+  if (op_ret < 0) {
+    return op_ret;
+  }
+  // S3 behavior is to silently cap the max-keys.
+  // Swift behavior is to abort.
+  if (max > default_max)
+    return -ERR_PRECONDITION_FAILED;
+
+  string path_args;
+  if (s->info.args.exists("path")) { // should handle empty path
+    path_args = s->info.args.get("path");
+    if (!delimiter.empty() || !prefix.empty()) {
+      return -EINVAL;
+    }
+    prefix = path_args;
+    delimiter="/";
+
+    path = prefix;
+    if (path.size() && path[path.size() - 1] != '/')
+      path.append("/");
+
+    int len = prefix.size();
+    int delim_size = delimiter.size();
+
+    if (len >= delim_size) {
+      if (prefix.substr(len - delim_size).compare(delimiter) != 0)
+        prefix.append(delimiter);
+    }
+  }
+
+  return 0;
+}
+
+static void dump_container_metadata(struct req_state *,
+                                    const RGWBucketEnt&,
+                                    const RGWQuotaInfo&,
+                                    const RGWBucketWebsiteConf&);
+
+void RGWListBucket_ObjStore_SWIFT::send_response()
+{
+  vector<rgw_bucket_dir_entry>::iterator iter = objs.begin();
+  map<string, bool>::iterator pref_iter = common_prefixes.begin();
+
+  dump_start(s);
+  dump_container_metadata(s, bucket, bucket_quota,
+                          s->bucket_info.website_conf);
+
+  s->formatter->open_array_section_with_attrs("container",
+					      FormatterAttrs("name",
+							     s->bucket.name.c_str(),
+							     NULL));
+
+  while (iter != objs.end() || pref_iter != common_prefixes.end()) {
+    bool do_pref = false;
+    bool do_objs = false;
+    rgw_obj_key key;
+    if (iter != objs.end()) {
+      key = iter->key;
+    }
+    if (pref_iter == common_prefixes.end())
+      do_objs = true;
+    else if (iter == objs.end())
+      do_pref = true;
+    else if (!key.empty() && key.name.compare(pref_iter->first) == 0) {
+      do_objs = true;
+      ++pref_iter;
+    } else if (!key.empty() && key.name.compare(pref_iter->first) <= 0)
+      do_objs = true;
+    else
+      do_pref = true;
+
+    if (do_objs && (allow_unordered || marker.empty() || marker < key)) {
+      if (key.name.compare(path) == 0)
+        goto next;
+
+      s->formatter->open_object_section("object");
+      s->formatter->dump_string("name", key.name);
+      s->formatter->dump_string("hash", iter->meta.etag);
+      s->formatter->dump_int("bytes", iter->meta.accounted_size);
+      if (!iter->meta.user_data.empty())
+        s->formatter->dump_string("user_custom_data", iter->meta.user_data);
+      string single_content_type = iter->meta.content_type;
+      if (iter->meta.content_type.size()) {
+        // content type might hold multiple values, just dump the last one
+        ssize_t pos = iter->meta.content_type.rfind(',');
+        if (pos > 0) {
+          ++pos;
+          while (single_content_type[pos] == ' ')
+            ++pos;
+          single_content_type = single_content_type.substr(pos);
+        }
+        s->formatter->dump_string("content_type", single_content_type);
+      }
+      dump_time(s, "last_modified", &iter->meta.mtime);
+      s->formatter->close_section();
+    }
+
+    if (do_pref &&  (marker.empty() || pref_iter->first.compare(marker.name) > 0)) {
+      const string& name = pref_iter->first;
+      if (name.compare(delimiter) == 0)
+        goto next;
+
+      s->formatter->open_object_section_with_attrs("subdir", FormatterAttrs("name", name.c_str(), NULL));
+
+      /* swift is a bit inconsistent here */
+      switch (s->format) {
+        case RGW_FORMAT_XML:
+          s->formatter->dump_string("name", name);
+          break;
+        default:
+          s->formatter->dump_string("subdir", name);
+      }
+      s->formatter->close_section();
+    }
+next:
+    if (do_objs)
+      ++iter;
+    else
+      ++pref_iter;
+  }
+
+  s->formatter->close_section();
+
+  int64_t content_len = 0;
+  if (! op_ret) {
+    content_len = s->formatter->get_len();
+    if (content_len == 0) {
+      op_ret = STATUS_NO_CONTENT;
+    }
+  } else if (op_ret > 0) {
+    op_ret = 0;
+  }
+
+  set_req_state_err(s, op_ret);
+  dump_errno(s);
+  end_header(s, this, NULL, content_len);
+  if (op_ret < 0) {
+    return;
+  }
+
+  rgw_flush_formatter_and_reset(s, s->formatter);
+} // RGWListBucket_ObjStore_SWIFT::send_response
+
+static void dump_container_metadata(struct req_state *s,
+                                    const RGWBucketEnt& bucket,
+                                    const RGWQuotaInfo& quota,
+                                    const RGWBucketWebsiteConf& ws_conf)
+{
+  /* Adding X-Timestamp to keep align with Swift API */
+  dump_header(s, "X-Timestamp", utime_t(s->bucket_info.creation_time));
+
+  dump_header(s, "X-Container-Object-Count", bucket.count);
+  dump_header(s, "X-Container-Bytes-Used", bucket.size);
+  dump_header(s, "X-Container-Bytes-Used-Actual", bucket.size_rounded);
+
+  if (s->object.empty()) {
+    auto swift_policy = \
+      static_cast<RGWAccessControlPolicy_SWIFT*>(s->bucket_acl.get());
+    std::string read_acl, write_acl;
+    swift_policy->to_str(read_acl, write_acl);
+
+    if (read_acl.size()) {
+      dump_header(s, "X-Container-Read", read_acl);
+    }
+    if (write_acl.size()) {
+      dump_header(s, "X-Container-Write", write_acl);
+    }
+    if (!s->bucket_info.placement_rule.name.empty()) {
+      dump_header(s, "X-Storage-Policy", s->bucket_info.placement_rule.name);
+    }
+    dump_header(s, "X-Storage-Class", s->bucket_info.placement_rule.get_storage_class());
+
+    /* Dump user-defined metadata items and generic attrs. */
+    const size_t PREFIX_LEN = sizeof(RGW_ATTR_META_PREFIX) - 1;
+    map<string, bufferlist>::iterator iter;
+    for (iter = s->bucket_attrs.lower_bound(RGW_ATTR_PREFIX);
+         iter != s->bucket_attrs.end();
+         ++iter) {
+      const char *name = iter->first.c_str();
+      map<string, string>::const_iterator geniter = rgw_to_http_attrs.find(name);
+
+      if (geniter != rgw_to_http_attrs.end()) {
+        dump_header(s, geniter->second, iter->second);
+      } else if (strncmp(name, RGW_ATTR_META_PREFIX, PREFIX_LEN) == 0) {
+        dump_header_prefixed(s, "X-Container-Meta-",
+                             camelcase_dash_http_attr(name + PREFIX_LEN),
+                             iter->second);
+      }
+    }
+  }
+
+  /* Dump container versioning info. */
+  if (! s->bucket_info.swift_ver_location.empty()) {
+    dump_header(s, "X-Versions-Location",
+                url_encode(s->bucket_info.swift_ver_location));
+  }
+
+  /* Dump quota headers. */
+  if (quota.enabled) {
+    if (quota.max_size >= 0) {
+      dump_header(s, "X-Container-Meta-Quota-Bytes", quota.max_size);
+    }
+
+    if (quota.max_objects >= 0) {
+      dump_header(s, "X-Container-Meta-Quota-Count", quota.max_objects);
+    }
+  }
+
+  /* Dump Static Website headers. */
+  if (! ws_conf.index_doc_suffix.empty()) {
+    dump_header(s, "X-Container-Meta-Web-Index", ws_conf.index_doc_suffix);
+  }
+
+  if (! ws_conf.error_doc.empty()) {
+    dump_header(s, "X-Container-Meta-Web-Error", ws_conf.error_doc);
+  }
+
+  if (! ws_conf.subdir_marker.empty()) {
+    dump_header(s, "X-Container-Meta-Web-Directory-Type",
+                ws_conf.subdir_marker);
+  }
+
+  if (! ws_conf.listing_css_doc.empty()) {
+    dump_header(s, "X-Container-Meta-Web-Listings-CSS",
+                ws_conf.listing_css_doc);
+  }
+
+  if (ws_conf.listing_enabled) {
+    dump_header(s, "X-Container-Meta-Web-Listings", "true");
+  }
+
+  /* Dump bucket's modification time. Compliance with the Swift API really
+   * needs that. */
+  dump_last_modified(s, s->bucket_mtime);
+}
+
+void RGWStatAccount_ObjStore_SWIFT::execute()
+{
+  RGWStatAccount_ObjStore::execute();
+  op_ret = rgw_get_user_attrs_by_uid(store, s->user->user_id, attrs);
+}
+
+void RGWStatAccount_ObjStore_SWIFT::send_response()
+{
+  if (op_ret >= 0) {
+    op_ret = STATUS_NO_CONTENT;
+    dump_account_metadata(s,
+            global_stats,
+            policies_stats,
+            attrs,
+            user_quota,
+            static_cast<RGWAccessControlPolicy_SWIFTAcct&>(*s->user_acl));
+  }
+
+  set_req_state_err(s, op_ret);
+  dump_errno(s);
+
+  end_header(s, NULL, NULL, 0,  true);
+
+  dump_start(s);
+}
+
+void RGWStatBucket_ObjStore_SWIFT::send_response()
+{
+  if (op_ret >= 0) {
+    op_ret = STATUS_NO_CONTENT;
+    dump_container_metadata(s, bucket, bucket_quota,
+                            s->bucket_info.website_conf);
+  }
+
+  set_req_state_err(s, op_ret);
+  dump_errno(s);
+
+  end_header(s, this, NULL, 0, true);
+  dump_start(s);
+}
+
+static int get_swift_container_settings(req_state * const s,
+                                        RGWRados * const store,
+                                        RGWAccessControlPolicy * const policy,
+                                        bool * const has_policy,
+                                        uint32_t * rw_mask,
+                                        RGWCORSConfiguration * const cors_config,
+                                        bool * const has_cors)
+{
+  const char * const read_list = s->info.env->get("HTTP_X_CONTAINER_READ");
+  const char * const write_list = s->info.env->get("HTTP_X_CONTAINER_WRITE");
+
+  *has_policy = false;
+
+  if (read_list || write_list) {
+    RGWAccessControlPolicy_SWIFT swift_policy(s->cct);
+    const auto r = swift_policy.create(store,
+                                       s->user->user_id,
+                                       s->user->display_name,
+                                       read_list,
+                                       write_list,
+                                       *rw_mask);
+    if (r < 0) {
+      return r;
+    }
+
+    *policy = swift_policy;
+    *has_policy = true;
+  }
+
+  *has_cors = false;
+
+  /*Check and update CORS configuration*/
+  const char *allow_origins = s->info.env->get("HTTP_X_CONTAINER_META_ACCESS_CONTROL_ALLOW_ORIGIN");
+  const char *allow_headers = s->info.env->get("HTTP_X_CONTAINER_META_ACCESS_CONTROL_ALLOW_HEADERS");
+  const char *expose_headers = s->info.env->get("HTTP_X_CONTAINER_META_ACCESS_CONTROL_EXPOSE_HEADERS");
+  const char *max_age = s->info.env->get("HTTP_X_CONTAINER_META_ACCESS_CONTROL_MAX_AGE");
+  if (allow_origins) {
+    RGWCORSConfiguration_SWIFT *swift_cors = new RGWCORSConfiguration_SWIFT;
+    int r = swift_cors->create_update(allow_origins, allow_headers, expose_headers, max_age);
+    if (r < 0) {
+      dout(0) << "Error creating/updating the cors configuration" << dendl;
+      delete swift_cors;
+      return r;
+    }
+    *has_cors = true;
+    *cors_config = *swift_cors;
+    cors_config->dump();
+    delete swift_cors;
+  }
+
+  return 0;
+}
+
+#define ACCT_REMOVE_ATTR_PREFIX     "HTTP_X_REMOVE_ACCOUNT_META_"
+#define ACCT_PUT_ATTR_PREFIX        "HTTP_X_ACCOUNT_META_"
+#define CONT_REMOVE_ATTR_PREFIX     "HTTP_X_REMOVE_CONTAINER_META_"
+#define CONT_PUT_ATTR_PREFIX        "HTTP_X_CONTAINER_META_"
+
+static void get_rmattrs_from_headers(const req_state * const s,
+				     const char * const put_prefix,
+				     const char * const del_prefix,
+				     set<string>& rmattr_names)
+{
+  const size_t put_prefix_len = strlen(put_prefix);
+  const size_t del_prefix_len = strlen(del_prefix);
+
+  for (const auto& kv : s->info.env->get_map()) {
+    size_t prefix_len = 0;
+    const char * const p = kv.first.c_str();
+
+    if (strncasecmp(p, del_prefix, del_prefix_len) == 0) {
+      /* Explicitly requested removal. */
+      prefix_len = del_prefix_len;
+    } else if ((strncasecmp(p, put_prefix, put_prefix_len) == 0)
+	       && kv.second.empty()) {
+      /* Removal requested by putting an empty value. */
+      prefix_len = put_prefix_len;
+    }
+
+    if (prefix_len > 0) {
+      string name(RGW_ATTR_META_PREFIX);
+      name.append(lowercase_dash_http_attr(p + prefix_len));
+      rmattr_names.insert(name);
+    }
+  }
+}
+
+static int get_swift_versioning_settings(
+  req_state * const s,
+  boost::optional<std::string>& swift_ver_location)
+{
+  /* Removing the Swift's versions location has lower priority than setting
+   * a new one. That's the reason why we're handling it first. */
+  const std::string vlocdel =
+    s->info.env->get("HTTP_X_REMOVE_VERSIONS_LOCATION", "");
+  if (vlocdel.size()) {
+    swift_ver_location = boost::in_place(std::string());
+  }
+
+  if (s->info.env->exists("HTTP_X_VERSIONS_LOCATION")) {
+    /* If the Swift's versioning is globally disabled but someone wants to
+     * enable it for a given container, new version of Swift will generate
+     * the precondition failed error. */
+    if (! s->cct->_conf->rgw_swift_versioning_enabled) {
+      return -ERR_PRECONDITION_FAILED;
+    }
+
+    swift_ver_location = s->info.env->get("HTTP_X_VERSIONS_LOCATION", "");
+  }
+
+  return 0;
+}
+
+int RGWCreateBucket_ObjStore_SWIFT::get_params()
+{
+  bool has_policy;
+  uint32_t policy_rw_mask = 0;
+
+  int r = get_swift_container_settings(s, store, &policy, &has_policy,
+				       &policy_rw_mask, &cors_config, &has_cors);
+  if (r < 0) {
+    return r;
+  }
+
+  if (!has_policy) {
+    policy.create_default(s->user->user_id, s->user->display_name);
+  }
+
+  location_constraint = store->svc.zone->get_zonegroup().api_name;
+  get_rmattrs_from_headers(s, CONT_PUT_ATTR_PREFIX,
+                           CONT_REMOVE_ATTR_PREFIX, rmattr_names);
+  placement_rule.init(s->info.env->get("HTTP_X_STORAGE_POLICY", ""), s->info.storage_class);
+
+  return get_swift_versioning_settings(s, swift_ver_location);
+}
+
+static inline int handle_metadata_errors(req_state* const s, const int op_ret)
+{
+  if (op_ret == -EFBIG) {
+    /* Handle the custom error message of exceeding maximum custom attribute
+     * (stored as xattr) size. */
+    const auto error_message = boost::str(
+      boost::format("Metadata value longer than %lld")
+        % s->cct->_conf.get_val<Option::size_t>("rgw_max_attr_size"));
+    set_req_state_err(s, EINVAL, error_message);
+    return -EINVAL;
+  } else if (op_ret == -E2BIG) {
+    const auto error_message = boost::str(
+      boost::format("Too many metadata items; max %lld")
+        % s->cct->_conf.get_val<uint64_t>("rgw_max_attrs_num_in_req"));
+    set_req_state_err(s, EINVAL, error_message);
+    return -EINVAL;
+  }
+
+  return op_ret;
+}
+
+void RGWCreateBucket_ObjStore_SWIFT::send_response()
+{
+  const auto meta_ret = handle_metadata_errors(s, op_ret);
+  if (meta_ret != op_ret) {
+    op_ret = meta_ret;
+  } else {
+    if (!op_ret) {
+      op_ret = STATUS_CREATED;
+    } else if (op_ret == -ERR_BUCKET_EXISTS) {
+      op_ret = STATUS_ACCEPTED;
+    }
+    set_req_state_err(s, op_ret);
+  }
+
+  dump_errno(s);
+  /* Propose ending HTTP header with 0 Content-Length header. */
+  end_header(s, NULL, NULL, 0);
+  rgw_flush_formatter_and_reset(s, s->formatter);
+}
+
+void RGWDeleteBucket_ObjStore_SWIFT::send_response()
+{
+  int r = op_ret;
+  if (!r)
+    r = STATUS_NO_CONTENT;
+
+  set_req_state_err(s, r);
+  dump_errno(s);
+  end_header(s, this, NULL, 0);
+  rgw_flush_formatter_and_reset(s, s->formatter);
+}
+
+static int get_delete_at_param(req_state *s, boost::optional<real_time> &delete_at)
+{
+  /* Handle Swift object expiration. */
+  real_time delat_proposal;
+  string x_delete = s->info.env->get("HTTP_X_DELETE_AFTER", "");
+
+  if (x_delete.empty()) {
+    x_delete = s->info.env->get("HTTP_X_DELETE_AT", "");
+  } else {
+    /* X-Delete-After HTTP is present. It means we need add its value
+     * to the current time. */
+    delat_proposal = real_clock::now();
+  }
+
+  if (x_delete.empty()) {
+    delete_at = boost::none;
+    if (s->info.env->exists("HTTP_X_REMOVE_DELETE_AT")) {
+      delete_at = boost::in_place(real_time());
+    }
+    return 0;
+  }
+  string err;
+  long ts = strict_strtoll(x_delete.c_str(), 10, &err);
+
+  if (!err.empty()) {
+    return -EINVAL;
+  }
+
+  delat_proposal += make_timespan(ts);
+  if (delat_proposal < real_clock::now()) {
+    return -EINVAL;
+  }
+
+  delete_at = delat_proposal;
+
+  return 0;
+}
+
+int RGWPutObj_ObjStore_SWIFT::verify_permission()
+{
+  op_ret = RGWPutObj_ObjStore::verify_permission();
+
+  /* We have to differentiate error codes depending on whether user is
+   * anonymous (401 Unauthorized) or he doesn't have necessary permissions
+   * (403 Forbidden). */
+  if (s->auth.identity->is_anonymous() && op_ret == -EACCES) {
+    return -EPERM;
+  } else {
+    return op_ret;
+  }
+}
+
+int RGWPutObj_ObjStore_SWIFT::update_slo_segment_size(rgw_slo_entry& entry) {
+
+  int r = 0;
+  const string& path = entry.path;
+
+  /* If the path starts with slashes, strip them all. */
+  const size_t pos_init = path.find_first_not_of('/');
+
+  if (pos_init == string::npos) {
+    return -EINVAL;
+  }
+
+  const size_t pos_sep = path.find('/', pos_init);
+  if (pos_sep == string::npos) {
+    return -EINVAL;
+  }
+
+  string bucket_name = path.substr(pos_init, pos_sep - pos_init);
+  string obj_name = path.substr(pos_sep + 1);
+
+  rgw_bucket bucket;
+
+  if (bucket_name.compare(s->bucket.name) != 0) {
+    RGWBucketInfo bucket_info;
+    map<string, bufferlist> bucket_attrs;
+    auto obj_ctx = store->svc.sysobj->init_obj_ctx();
+    r = store->get_bucket_info(obj_ctx, s->user->user_id.tenant,
+			       bucket_name, bucket_info, nullptr,
+			       &bucket_attrs);
+    if (r < 0) {
+      ldpp_dout(this, 0) << "could not get bucket info for bucket="
+			 << bucket_name << dendl;
+      return r;
+    }
+    bucket = bucket_info.bucket;
+  } else {
+    bucket = s->bucket;
+  }
+
+  /* fetch the stored size of the seg (or error if not valid) */
+  rgw_obj_key slo_key(obj_name);
+  rgw_obj slo_seg(bucket, slo_key);
+
+  /* no prefetch */
+  RGWObjectCtx obj_ctx(store);
+  obj_ctx.set_atomic(slo_seg);
+
+  RGWRados::Object op_target(store, s->bucket_info, obj_ctx, slo_seg);
+  RGWRados::Object::Read read_op(&op_target);
+
+  bool compressed;
+  RGWCompressionInfo cs_info;
+  map<std::string, buffer::list> attrs;
+  uint64_t size_bytes{0};
+
+  read_op.params.attrs = &attrs;
+  read_op.params.obj_size = &size_bytes;
+
+  r = read_op.prepare();
+  if (r < 0) {
+    return r;
+  }
+
+  r = rgw_compression_info_from_attrset(attrs, compressed, cs_info);
+  if (r < 0) {
+    return -EIO;
+  }
+
+  if (compressed) {
+    size_bytes = cs_info.orig_size;
+  }
+
+  /* "When the PUT operation sees the multipart-manifest=put query
+   * parameter, it reads the request body and verifies that each
+   * segment object exists and that the sizes and ETags match. If
+   * there is a mismatch, the PUT operation fails."
+   */
+  if (entry.size_bytes &&
+      (entry.size_bytes != size_bytes)) {
+    return -EINVAL;
+  }
+
+  entry.size_bytes = size_bytes;
+
+  return 0;
+} /* RGWPutObj_ObjStore_SWIFT::update_slo_segment_sizes */
+
+int RGWPutObj_ObjStore_SWIFT::get_params()
+{
+  if (s->has_bad_meta) {
+    return -EINVAL;
+  }
+
+  if (!s->length) {
+    const char *encoding = s->info.env->get("HTTP_TRANSFER_ENCODING");
+    if (!encoding || strcmp(encoding, "chunked") != 0) {
+      ldout(s->cct, 20) << "neither length nor chunked encoding" << dendl;
+      return -ERR_LENGTH_REQUIRED;
+    }
+
+    chunked_upload = true;
+  }
+
+  supplied_etag = s->info.env->get("HTTP_ETAG");
+
+  if (!s->generic_attrs.count(RGW_ATTR_CONTENT_TYPE)) {
+    ldout(s->cct, 5) << "content type wasn't provided, trying to guess" << dendl;
+    const char *suffix = strrchr(s->object.name.c_str(), '.');
+    if (suffix) {
+      suffix++;
+      if (*suffix) {
+	string suffix_str(suffix);
+	const char *mime = rgw_find_mime_by_ext(suffix_str);
+	if (mime) {
+	  s->generic_attrs[RGW_ATTR_CONTENT_TYPE] = mime;
+	}
+      }
+    }
+  }
+
+  policy.create_default(s->user->user_id, s->user->display_name);
+
+  int r = get_delete_at_param(s, delete_at);
+  if (r < 0) {
+    ldout(s->cct, 5) << "ERROR: failed to get Delete-At param" << dendl;
+    return r;
+  }
+
+  if (!s->cct->_conf->rgw_swift_custom_header.empty()) {
+    string custom_header = s->cct->_conf->rgw_swift_custom_header;
+    if (s->info.env->exists(custom_header.c_str())) {
+      user_data = s->info.env->get(custom_header.c_str());
+    }
+  }
+
+  dlo_manifest = s->info.env->get("HTTP_X_OBJECT_MANIFEST");
+  bool exists;
+  string multipart_manifest = s->info.args.get("multipart-manifest", &exists);
+  if (exists) {
+    if (multipart_manifest != "put") {
+      ldout(s->cct, 5) << "invalid multipart-manifest http param: " << multipart_manifest << dendl;
+      return -EINVAL;
+    }
+
+#define MAX_SLO_ENTRY_SIZE (1024 + 128) // 1024 - max obj name, 128 - enough extra for other info
+    uint64_t max_len = s->cct->_conf->rgw_max_slo_entries * MAX_SLO_ENTRY_SIZE;
+    
+    slo_info = new RGWSLOInfo;
+    
+    int r = 0;
+    std::tie(r, slo_info->raw_data) = rgw_rest_get_json_input_keep_data(s->cct, s, slo_info->entries, max_len);
+    if (r < 0) {
+      ldout(s->cct, 5) << "failed to read input for slo r=" << r << dendl;
+      return r;
+    }
+
+    if ((int64_t)slo_info->entries.size() > s->cct->_conf->rgw_max_slo_entries) {
+      ldout(s->cct, 5) << "too many entries in slo request: " << slo_info->entries.size() << dendl;
+      return -EINVAL;
+    }
+
+    MD5 etag_sum;
+    uint64_t total_size = 0;
+    for (auto& entry : slo_info->entries) {
+      etag_sum.Update((const unsigned char *)entry.etag.c_str(),
+                      entry.etag.length());
+
+      /* if size_bytes == 0, it should be replaced with the
+       * real segment size (which could be 0);  this follows from the
+       * fact that Swift requires all segments to exist, but permits
+       * the size_bytes element to be omitted from the SLO manifest, see
+       * https://docs.openstack.org/swift/latest/api/large_objects.html
+       */
+      r = update_slo_segment_size(entry);
+      if (r < 0) {
+	return r;
+      }
+
+      total_size += entry.size_bytes;
+
+      ldout(s->cct, 20) << "slo_part: " << entry.path
+                        << " size=" << entry.size_bytes
+                        << " etag=" << entry.etag
+                        << dendl;
+    }
+    complete_etag(etag_sum, &lo_etag);
+    slo_info->total_size = total_size;
+
+    ofs = slo_info->raw_data.length();
+  }
+
+  return RGWPutObj_ObjStore::get_params();
+}
+
+void RGWPutObj_ObjStore_SWIFT::send_response()
+{
+  const auto meta_ret = handle_metadata_errors(s, op_ret);
+  if (meta_ret) {
+    op_ret = meta_ret;
+  } else {
+    if (!op_ret) {
+      op_ret = STATUS_CREATED;
+    }
+    set_req_state_err(s, op_ret);
+  }
+
+  if (! lo_etag.empty()) {
+    /* Static Large Object of Swift API has two etags represented by
+     * following members:
+     *  - etag - for the manifest itself (it will be stored in xattrs),
+     *  - lo_etag - for the content composited from SLO's segments.
+     *    The value is calculated basing on segments' etags.
+     * In response for PUT request we have to expose the second one.
+     * The first one may be obtained by GET with "multipart-manifest=get"
+     * in query string on a given SLO. */
+    dump_etag(s, lo_etag, true /* quoted */);
+  } else {
+    dump_etag(s, etag);
+  }
+
+  dump_last_modified(s, mtime);
+  set_req_state_err(s, op_ret);
+  dump_errno(s);
+  end_header(s, this);
+  rgw_flush_formatter_and_reset(s, s->formatter);
+}
+
+static int get_swift_account_settings(req_state * const s,
+                                      RGWRados * const store,
+                                      RGWAccessControlPolicy_SWIFTAcct * const policy,
+                                      bool * const has_policy)
+{
+  *has_policy = false;
+
+  const char * const acl_attr = s->info.env->get("HTTP_X_ACCOUNT_ACCESS_CONTROL");
+  if (acl_attr) {
+    RGWAccessControlPolicy_SWIFTAcct swift_acct_policy(s->cct);
+    const bool r = swift_acct_policy.create(store,
+                                     s->user->user_id,
+                                     s->user->display_name,
+                                     string(acl_attr));
+    if (r != true) {
+      return -EINVAL;
+    }
+
+    *policy = swift_acct_policy;
+    *has_policy = true;
+  }
+
+  return 0;
+}
+
+int RGWPutMetadataAccount_ObjStore_SWIFT::get_params()
+{
+  if (s->has_bad_meta) {
+    return -EINVAL;
+  }
+
+  int ret = get_swift_account_settings(s,
+                                       store,
+                                       // FIXME: we need to carry unique_ptr in generic class
+                                       // and allocate appropriate ACL class in the ctor
+                                       static_cast<RGWAccessControlPolicy_SWIFTAcct *>(&policy),
+                                       &has_policy);
+  if (ret < 0) {
+    return ret;
+  }
+
+  get_rmattrs_from_headers(s, ACCT_PUT_ATTR_PREFIX, ACCT_REMOVE_ATTR_PREFIX,
+			   rmattr_names);
+  return 0;
+}
+
+void RGWPutMetadataAccount_ObjStore_SWIFT::send_response()
+{
+  const auto meta_ret = handle_metadata_errors(s, op_ret);
+  if (meta_ret != op_ret) {
+    op_ret = meta_ret;
+  } else {
+    if (!op_ret) {
+      op_ret = STATUS_NO_CONTENT;
+    }
+    set_req_state_err(s, op_ret);
+  }
+
+  dump_errno(s);
+  end_header(s, this);
+  rgw_flush_formatter_and_reset(s, s->formatter);
+}
+
+int RGWPutMetadataBucket_ObjStore_SWIFT::get_params()
+{
+  if (s->has_bad_meta) {
+    return -EINVAL;
+  }
+
+  int r = get_swift_container_settings(s, store, &policy, &has_policy,
+				       &policy_rw_mask, &cors_config, &has_cors);
+  if (r < 0) {
+    return r;
+  }
+
+  get_rmattrs_from_headers(s, CONT_PUT_ATTR_PREFIX, CONT_REMOVE_ATTR_PREFIX,
+			   rmattr_names);
+  placement_rule.init(s->info.env->get("HTTP_X_STORAGE_POLICY", ""), s->info.storage_class);
+
+  return get_swift_versioning_settings(s, swift_ver_location);
+}
+
+void RGWPutMetadataBucket_ObjStore_SWIFT::send_response()
+{
+  const auto meta_ret = handle_metadata_errors(s, op_ret);
+  if (meta_ret != op_ret) {
+    op_ret = meta_ret;
+  } else {
+    if (!op_ret && (op_ret != -EINVAL)) {
+      op_ret = STATUS_NO_CONTENT;
+    }
+    set_req_state_err(s, op_ret);
+  }
+
+  dump_errno(s);
+  end_header(s, this);
+  rgw_flush_formatter_and_reset(s, s->formatter);
+}
+
+int RGWPutMetadataObject_ObjStore_SWIFT::get_params()
+{
+  if (s->has_bad_meta) {
+    return -EINVAL;
+  }
+
+  /* Handle Swift object expiration. */
+  int r = get_delete_at_param(s, delete_at);
+  if (r < 0) {
+    ldout(s->cct, 5) << "ERROR: failed to get Delete-At param" << dendl;
+    return r;
+  }
+
+  dlo_manifest = s->info.env->get("HTTP_X_OBJECT_MANIFEST");
+
+  return 0;
+}
+
+void RGWPutMetadataObject_ObjStore_SWIFT::send_response()
+{
+  const auto meta_ret = handle_metadata_errors(s, op_ret);
+  if (meta_ret != op_ret) {
+    op_ret = meta_ret;
+  } else {
+    if (!op_ret) {
+      op_ret = STATUS_ACCEPTED;
+    }
+    set_req_state_err(s, op_ret);
+  }
+
+  if (!s->is_err()) {
+    dump_content_length(s, 0);
+  }
+
+  dump_errno(s);
+  end_header(s, this);
+  rgw_flush_formatter_and_reset(s, s->formatter);
+}
+
+static void bulkdelete_respond(const unsigned num_deleted,
+                               const unsigned int num_unfound,
+                               const std::list<RGWBulkDelete::fail_desc_t>& failures,
+                               const int prot_flags,                  /* in  */
+                               ceph::Formatter& formatter)            /* out */
+{
+  formatter.open_object_section("delete");
+
+  string resp_status;
+  string resp_body;
+
+  if (!failures.empty()) {
+    int reason = ERR_INVALID_REQUEST;
+    for (const auto fail_desc : failures) {
+      if (-ENOENT != fail_desc.err && -EACCES != fail_desc.err) {
+        reason = fail_desc.err;
+      }
+    }
+    rgw_err err;
+    set_req_state_err(err, reason, prot_flags);
+    dump_errno(err, resp_status);
+  } else if (0 == num_deleted && 0 == num_unfound) {
+    /* 400 Bad Request */
+    dump_errno(400, resp_status);
+    resp_body = "Invalid bulk delete.";
+  } else {
+    /* 200 OK */
+    dump_errno(200, resp_status);
+  }
+
+  encode_json("Number Deleted", num_deleted, &formatter);
+  encode_json("Number Not Found", num_unfound, &formatter);
+  encode_json("Response Body", resp_body, &formatter);
+  encode_json("Response Status", resp_status, &formatter);
+
+  formatter.open_array_section("Errors");
+  for (const auto fail_desc : failures) {
+    formatter.open_array_section("object");
+
+    stringstream ss_name;
+    ss_name << fail_desc.path;
+    encode_json("Name", ss_name.str(), &formatter);
+
+    rgw_err err;
+    set_req_state_err(err, fail_desc.err, prot_flags);
+    string status;
+    dump_errno(err, status);
+    encode_json("Status", status, &formatter);
+    formatter.close_section();
+  }
+  formatter.close_section();
+
+  formatter.close_section();
+}
+
+int RGWDeleteObj_ObjStore_SWIFT::verify_permission()
+{
+  op_ret = RGWDeleteObj_ObjStore::verify_permission();
+
+  /* We have to differentiate error codes depending on whether user is
+   * anonymous (401 Unauthorized) or he doesn't have necessary permissions
+   * (403 Forbidden). */
+  if (s->auth.identity->is_anonymous() && op_ret == -EACCES) {
+    return -EPERM;
+  } else {
+    return op_ret;
+  }
+}
+
+int RGWDeleteObj_ObjStore_SWIFT::get_params()
+{
+  const string& mm = s->info.args.get("multipart-manifest");
+  multipart_delete = (mm.compare("delete") == 0);
+
+  return RGWDeleteObj_ObjStore::get_params();
+}
+
+void RGWDeleteObj_ObjStore_SWIFT::send_response()
+{
+  int r = op_ret;
+
+  if (multipart_delete) {
+    r = 0;
+  } else if(!r) {
+    r = STATUS_NO_CONTENT;
+  }
+
+  set_req_state_err(s, r);
+  dump_errno(s);
+
+  if (multipart_delete) {
+    end_header(s, this /* RGWOp */, nullptr /* contype */,
+               CHUNKED_TRANSFER_ENCODING);
+
+    if (deleter) {
+      bulkdelete_respond(deleter->get_num_deleted(),
+                         deleter->get_num_unfound(),
+                         deleter->get_failures(),
+                         s->prot_flags,
+                         *s->formatter);
+    } else if (-ENOENT == op_ret) {
+      bulkdelete_respond(0, 1, {}, s->prot_flags, *s->formatter);
+    } else {
+      RGWBulkDelete::acct_path_t path;
+      path.bucket_name = s->bucket_name;
+      path.obj_key = s->object;
+
+      RGWBulkDelete::fail_desc_t fail_desc;
+      fail_desc.err = op_ret;
+      fail_desc.path = path;
+
+      bulkdelete_respond(0, 0, { fail_desc }, s->prot_flags, *s->formatter);
+    }
+  } else {
+    end_header(s, this);
+  }
+
+  rgw_flush_formatter_and_reset(s, s->formatter);
+
+}
+
+static void get_contype_from_attrs(map<string, bufferlist>& attrs,
+				   string& content_type)
+{
+  map<string, bufferlist>::iterator iter = attrs.find(RGW_ATTR_CONTENT_TYPE);
+  if (iter != attrs.end()) {
+    content_type = rgw_bl_str(iter->second);
+  }
+}
+
+static void dump_object_metadata(struct req_state * const s,
+				 const map<string, bufferlist>& attrs)
+{
+  map<string, string> response_attrs;
+
+  for (auto kv : attrs) {
+    const char * name = kv.first.c_str();
+    const auto aiter = rgw_to_http_attrs.find(name);
+
+    if (aiter != std::end(rgw_to_http_attrs)) {
+      response_attrs[aiter->second] = rgw_bl_str(kv.second);
+    } else if (strcmp(name, RGW_ATTR_SLO_UINDICATOR) == 0) {
+      // this attr has an extra length prefix from encode() in prior versions
+      dump_header(s, "X-Object-Meta-Static-Large-Object", "True");
+    } else if (strncmp(name, RGW_ATTR_META_PREFIX,
+		       sizeof(RGW_ATTR_META_PREFIX)-1) == 0) {
+      name += sizeof(RGW_ATTR_META_PREFIX) - 1;
+      dump_header_prefixed(s, "X-Object-Meta-",
+                           camelcase_dash_http_attr(name), kv.second);
+    }
+  }
+
+  /* Handle override and fallback for Content-Disposition HTTP header.
+   * At the moment this will be used only by TempURL of the Swift API. */
+  const auto cditer = rgw_to_http_attrs.find(RGW_ATTR_CONTENT_DISP);
+  if (cditer != std::end(rgw_to_http_attrs)) {
+    const auto& name = cditer->second;
+
+    if (!s->content_disp.override.empty()) {
+      response_attrs[name] = s->content_disp.override;
+    } else if (!s->content_disp.fallback.empty()
+        && response_attrs.find(name) == std::end(response_attrs)) {
+      response_attrs[name] = s->content_disp.fallback;
+    }
+  }
+
+  for (const auto kv : response_attrs) {
+    dump_header(s, kv.first, kv.second);
+  }
+
+  const auto iter = attrs.find(RGW_ATTR_DELETE_AT);
+  if (iter != std::end(attrs)) {
+    utime_t delete_at;
+    try {
+      decode(delete_at, iter->second);
+      if (!delete_at.is_zero()) {
+        dump_header(s, "X-Delete-At", delete_at.sec());
+      }
+    } catch (buffer::error& err) {
+      ldout(s->cct, 0) << "ERROR: cannot decode object's " RGW_ATTR_DELETE_AT
+                          " attr, ignoring"
+                       << dendl;
+    }
+  }
+}
+
+int RGWCopyObj_ObjStore_SWIFT::init_dest_policy()
+{
+  dest_policy.create_default(s->user->user_id, s->user->display_name);
+
+  return 0;
+}
+
+int RGWCopyObj_ObjStore_SWIFT::get_params()
+{
+  if_mod = s->info.env->get("HTTP_IF_MODIFIED_SINCE");
+  if_unmod = s->info.env->get("HTTP_IF_UNMODIFIED_SINCE");
+  if_match = s->info.env->get("HTTP_COPY_IF_MATCH");
+  if_nomatch = s->info.env->get("HTTP_COPY_IF_NONE_MATCH");
+
+  src_tenant_name = s->src_tenant_name;
+  src_bucket_name = s->src_bucket_name;
+  src_object = s->src_object;
+  dest_tenant_name = s->bucket_tenant;
+  dest_bucket_name = s->bucket_name;
+  dest_object = s->object.name;
+
+  const char * const fresh_meta = s->info.env->get("HTTP_X_FRESH_METADATA");
+  if (fresh_meta && strcasecmp(fresh_meta, "TRUE") == 0) {
+    attrs_mod = RGWRados::ATTRSMOD_REPLACE;
+  } else {
+    attrs_mod = RGWRados::ATTRSMOD_MERGE;
+  }
+
+  int r = get_delete_at_param(s, delete_at);
+  if (r < 0) {
+    ldout(s->cct, 5) << "ERROR: failed to get Delete-At param" << dendl;
+    return r;
+  }
+
+  return 0;
+}
+
+void RGWCopyObj_ObjStore_SWIFT::send_partial_response(off_t ofs)
+{
+  if (! sent_header) {
+    if (! op_ret)
+      op_ret = STATUS_CREATED;
+    set_req_state_err(s, op_ret);
+    dump_errno(s);
+    end_header(s, this);
+
+    /* Send progress information. Note that this diverge from the original swift
+     * spec. We do this in order to keep connection alive.
+     */
+    if (op_ret == 0) {
+      s->formatter->open_array_section("progress");
+    }
+    sent_header = true;
+  } else {
+    s->formatter->dump_int("ofs", (uint64_t)ofs);
+  }
+  rgw_flush_formatter(s, s->formatter);
+}
+
+void RGWCopyObj_ObjStore_SWIFT::dump_copy_info()
+{
+  /* Dump X-Copied-From. */
+  dump_header(s, "X-Copied-From", url_encode(src_bucket.name) +
+              "/" + url_encode(src_object.name));
+
+  /* Dump X-Copied-From-Account. */
+  /* XXX tenant */
+  dump_header(s, "X-Copied-From-Account", url_encode(s->user->user_id.id));
+
+  /* Dump X-Copied-From-Last-Modified. */
+  dump_time_header(s, "X-Copied-From-Last-Modified", src_mtime);
+}
+
+void RGWCopyObj_ObjStore_SWIFT::send_response()
+{
+  if (! sent_header) {
+    string content_type;
+    if (! op_ret)
+      op_ret = STATUS_CREATED;
+    set_req_state_err(s, op_ret);
+    dump_errno(s);
+    dump_etag(s, etag);
+    dump_last_modified(s, mtime);
+    dump_copy_info();
+    get_contype_from_attrs(attrs, content_type);
+    dump_object_metadata(s, attrs);
+    end_header(s, this, !content_type.empty() ? content_type.c_str()
+	       : "binary/octet-stream");
+  } else {
+    s->formatter->close_section();
+    rgw_flush_formatter(s, s->formatter);
+  }
+}
+
+int RGWGetObj_ObjStore_SWIFT::verify_permission()
+{
+  op_ret = RGWGetObj_ObjStore::verify_permission();
+
+  /* We have to differentiate error codes depending on whether user is
+   * anonymous (401 Unauthorized) or he doesn't have necessary permissions
+   * (403 Forbidden). */
+  if (s->auth.identity->is_anonymous() && op_ret == -EACCES) {
+    return -EPERM;
+  } else {
+    return op_ret;
+  }
+}
+
+int RGWGetObj_ObjStore_SWIFT::get_params()
+{
+  const string& mm = s->info.args.get("multipart-manifest");
+  skip_manifest = (mm.compare("get") == 0);
+
+  return RGWGetObj_ObjStore::get_params();
+}
+
+int RGWGetObj_ObjStore_SWIFT::send_response_data_error()
+{
+  std::string error_content;
+  op_ret = error_handler(op_ret, &error_content);
+  if (! op_ret) {
+    /* The error handler has taken care of the error. */
+    return 0;
+  }
+
+  bufferlist error_bl;
+  error_bl.append(error_content);
+  return send_response_data(error_bl, 0, error_bl.length());
+}
+
+int RGWGetObj_ObjStore_SWIFT::send_response_data(bufferlist& bl,
+                                                 const off_t bl_ofs,
+                                                 const off_t bl_len)
+{
+  string content_type;
+
+  if (sent_header) {
+    goto send_data;
+  }
+
+  if (custom_http_ret) {
+    set_req_state_err(s, 0);
+    dump_errno(s, custom_http_ret);
+  } else {
+    set_req_state_err(s, (partial_content && !op_ret) ? STATUS_PARTIAL_CONTENT
+		    : op_ret);
+    dump_errno(s);
+
+    if (s->is_err()) {
+      end_header(s, NULL);
+      return 0;
+    }
+  }
+
+  if (range_str) {
+    dump_range(s, ofs, end, s->obj_size);
+  }
+
+  if (s->is_err()) {
+    end_header(s, NULL);
+    return 0;
+  }
+
+  dump_content_length(s, total_len);
+  dump_last_modified(s, lastmod);
+  dump_header(s, "X-Timestamp", utime_t(lastmod));
+  if (is_slo) {
+    dump_header(s, "X-Static-Large-Object", "True");
+  }
+
+  if (! op_ret) {
+    if (! lo_etag.empty()) {
+      dump_etag(s, lo_etag, true /* quoted */);
+    } else {
+      auto iter = attrs.find(RGW_ATTR_ETAG);
+      if (iter != attrs.end()) {
+        dump_etag(s, iter->second.to_str());
+      }
+    }
+
+    get_contype_from_attrs(attrs, content_type);
+    dump_object_metadata(s, attrs);
+  }
+
+  end_header(s, this, !content_type.empty() ? content_type.c_str()
+	     : "binary/octet-stream");
+
+  sent_header = true;
+
+send_data:
+  if (get_data && !op_ret) {
+    const auto r = dump_body(s, bl.c_str() + bl_ofs, bl_len);
+    if (r < 0) {
+      return r;
+    }
+  }
+  rgw_flush_formatter_and_reset(s, s->formatter);
+
+  return 0;
+}
+
+void RGWOptionsCORS_ObjStore_SWIFT::send_response()
+{
+  string hdrs, exp_hdrs;
+  uint32_t max_age = CORS_MAX_AGE_INVALID;
+  /*EACCES means, there is no CORS registered yet for the bucket
+   *ENOENT means, there is no match of the Origin in the list of CORSRule
+   */
+  if (op_ret == -ENOENT)
+    op_ret = -EACCES;
+  if (op_ret < 0) {
+    set_req_state_err(s, op_ret);
+    dump_errno(s);
+    end_header(s, NULL);
+    return;
+  }
+  get_response_params(hdrs, exp_hdrs, &max_age);
+  dump_errno(s);
+  dump_access_control(s, origin, req_meth, hdrs.c_str(), exp_hdrs.c_str(),
+		      max_age);
+  end_header(s, NULL);
+}
+
+int RGWBulkDelete_ObjStore_SWIFT::get_data(
+  list<RGWBulkDelete::acct_path_t>& items, bool * const is_truncated)
+{
+  constexpr size_t MAX_LINE_SIZE = 2048;
+
+  RGWClientIOStreamBuf ciosb(static_cast<RGWRestfulIO&>(*(s->cio)),
+			     size_t(s->cct->_conf->rgw_max_chunk_size));
+  istream cioin(&ciosb);
+
+  char buf[MAX_LINE_SIZE];
+  while (cioin.getline(buf, sizeof(buf))) {
+    string path_str(buf);
+
+    ldout(s->cct, 20) << "extracted Bulk Delete entry: " << path_str << dendl;
+
+    RGWBulkDelete::acct_path_t path;
+
+    /* We need to skip all slashes at the beginning in order to preserve
+     * compliance with Swift. */
+    const size_t start_pos = path_str.find_first_not_of('/');
+
+    if (string::npos != start_pos) {
+      /* Seperator is the first slash after the leading ones. */
+      const size_t sep_pos = path_str.find('/', start_pos);
+
+      if (string::npos != sep_pos) {
+        path.bucket_name = url_decode(path_str.substr(start_pos,
+                                                      sep_pos - start_pos));
+        path.obj_key = url_decode(path_str.substr(sep_pos + 1));
+      } else {
+        /* It's guaranteed here that bucket name is at least one character
+         * long and is different than slash. */
+        path.bucket_name = url_decode(path_str.substr(start_pos));
+      }
+
+      items.push_back(path);
+    }
+
+    if (items.size() == MAX_CHUNK_ENTRIES) {
+      *is_truncated = true;
+      return 0;
+    }
+  }
+
+  *is_truncated = false;
+  return 0;
+}
+
+void RGWBulkDelete_ObjStore_SWIFT::send_response()
+{
+  set_req_state_err(s, op_ret);
+  dump_errno(s);
+  end_header(s, this /* RGWOp */, nullptr /* contype */,
+             CHUNKED_TRANSFER_ENCODING);
+
+  bulkdelete_respond(deleter->get_num_deleted(),
+                     deleter->get_num_unfound(),
+                     deleter->get_failures(),
+                     s->prot_flags,
+                     *s->formatter);
+  rgw_flush_formatter_and_reset(s, s->formatter);
+}
+
+
+std::unique_ptr<RGWBulkUploadOp::StreamGetter>
+RGWBulkUploadOp_ObjStore_SWIFT::create_stream()
+{
+  class SwiftStreamGetter : public StreamGetter {
+    const size_t conlen;
+    size_t curpos;
+    req_state* const s;
+
+  public:
+    SwiftStreamGetter(req_state* const s, const size_t conlen)
+      : conlen(conlen),
+        curpos(0),
+        s(s) {
+    }
+
+    ssize_t get_at_most(size_t want, ceph::bufferlist& dst) override {
+      /* maximum requested by a caller */
+      /* data provided by client */
+      /* RadosGW's limit. */
+      const size_t max_chunk_size = \
+        static_cast<size_t>(s->cct->_conf->rgw_max_chunk_size);
+      const size_t max_to_read = std::min({ want, conlen - curpos, max_chunk_size });
+
+      ldout(s->cct, 20) << "bulk_upload: get_at_most max_to_read="
+                        << max_to_read
+                        << ", dst.c_str()=" << reinterpret_cast<intptr_t>(dst.c_str()) << dendl;
+
+      bufferptr bp(max_to_read);
+      const auto read_len = recv_body(s, bp.c_str(), max_to_read);
+      dst.append(bp, 0, read_len);
+      //const auto read_len = recv_body(s, dst.c_str(), max_to_read);
+      if (read_len < 0) {
+        return read_len;
+      }
+
+      curpos += read_len;
+      return curpos > s->cct->_conf->rgw_max_put_size ? -ERR_TOO_LARGE
+                                                      : read_len;
+    }
+
+    ssize_t get_exactly(size_t want, ceph::bufferlist& dst) override {
+      ldout(s->cct, 20) << "bulk_upload: get_exactly want=" << want << dendl;
+
+      /* FIXME: do this in a loop. */
+      const auto ret = get_at_most(want, dst);
+      ldout(s->cct, 20) << "bulk_upload: get_exactly ret=" << ret << dendl;
+      if (ret < 0) {
+        return ret;
+      } else if (static_cast<size_t>(ret) != want) {
+        return -EINVAL;
+      } else {
+        return want;
+      }
+    }
+  };
+
+  if (! s->length) {
+    op_ret = -EINVAL;
+    return nullptr;
+  } else {
+    ldout(s->cct, 20) << "bulk upload: create_stream for length="
+                      << s->length << dendl;
+
+    const size_t conlen = atoll(s->length);
+    return std::unique_ptr<SwiftStreamGetter>(new SwiftStreamGetter(s, conlen));
+  }
+}
+
+void RGWBulkUploadOp_ObjStore_SWIFT::send_response()
+{
+  set_req_state_err(s, op_ret);
+  dump_errno(s);
+  end_header(s, this /* RGWOp */, nullptr /* contype */,
+             CHUNKED_TRANSFER_ENCODING);
+  rgw_flush_formatter_and_reset(s, s->formatter);
+
+  s->formatter->open_object_section("delete");
+
+  std::string resp_status;
+  std::string resp_body;
+
+  if (! failures.empty()) {
+    rgw_err err;
+
+    const auto last_err = { failures.back().err };
+    if (boost::algorithm::contains(last_err, terminal_errors)) {
+      /* The terminal errors are affecting the status of the whole upload. */
+      set_req_state_err(err, failures.back().err, s->prot_flags);
+    } else {
+      set_req_state_err(err, ERR_INVALID_REQUEST, s->prot_flags);
+    }
+
+    dump_errno(err, resp_status);
+  } else if (0 == num_created && failures.empty()) {
+    /* Nothing created, nothing failed. This means the archive contained no
+     * entity we could understand (regular file or directory). We need to
+     * send 400 Bad Request to an HTTP client in the internal status field. */
+    dump_errno(400, resp_status);
+    resp_body = "Invalid Tar File: No Valid Files";
+  } else {
+    /* 200 OK */
+    dump_errno(201, resp_status);
+  }
+
+  encode_json("Number Files Created", num_created, s->formatter);
+  encode_json("Response Body", resp_body, s->formatter);
+  encode_json("Response Status", resp_status, s->formatter);
+
+  s->formatter->open_array_section("Errors");
+  for (const auto& fail_desc : failures) {
+    s->formatter->open_array_section("object");
+
+    encode_json("Name", fail_desc.path, s->formatter);
+
+    rgw_err err;
+    set_req_state_err(err, fail_desc.err, s->prot_flags);
+    std::string status;
+    dump_errno(err, status);
+    encode_json("Status", status, s->formatter);
+
+    s->formatter->close_section();
+  }
+  s->formatter->close_section();
+
+  s->formatter->close_section();
+  rgw_flush_formatter_and_reset(s, s->formatter);
+}
+
+
+void RGWGetCrossDomainPolicy_ObjStore_SWIFT::send_response()
+{
+  set_req_state_err(s, op_ret);
+  dump_errno(s);
+  end_header(s, this, "application/xml");
+
+  std::stringstream ss;
+
+  ss << R"(<?xml version="1.0"?>)" << "\n"
+     << R"(<!DOCTYPE cross-domain-policy SYSTEM )"
+     << R"("http://www.adobe.com/xml/dtds/cross-domain-policy.dtd" >)" << "\n"
+     << R"(<cross-domain-policy>)" << "\n"
+     << g_conf()->rgw_cross_domain_policy << "\n"
+     << R"(</cross-domain-policy>)";
+
+  dump_body(s, ss.str());
+}
+
+void RGWGetHealthCheck_ObjStore_SWIFT::send_response()
+{
+  set_req_state_err(s, op_ret);
+  dump_errno(s);
+  end_header(s, this, "application/xml");
+
+  if (op_ret) {
+    static constexpr char DISABLED[] = "DISABLED BY FILE";
+    dump_body(s, DISABLED, strlen(DISABLED));
+  }
+}
+
+const vector<pair<string, RGWInfo_ObjStore_SWIFT::info>> RGWInfo_ObjStore_SWIFT::swift_info =
+{
+    {"bulk_delete", {false, nullptr}},
+    {"container_quotas", {false, nullptr}},
+    {"swift", {false, RGWInfo_ObjStore_SWIFT::list_swift_data}},
+    {"tempurl", { false, RGWInfo_ObjStore_SWIFT::list_tempurl_data}},
+    {"slo", {false, RGWInfo_ObjStore_SWIFT::list_slo_data}},
+    {"account_quotas", {false, nullptr}},
+    {"staticweb", {false, nullptr}},
+    {"tempauth", {false, RGWInfo_ObjStore_SWIFT::list_tempauth_data}},
+};
+
+void RGWInfo_ObjStore_SWIFT::execute()
+{
+  bool is_admin_info_enabled = false;
+
+  const string& swiftinfo_sig = s->info.args.get("swiftinfo_sig");
+  const string& swiftinfo_expires = s->info.args.get("swiftinfo_expires");
+
+  if (!swiftinfo_sig.empty() &&
+      !swiftinfo_expires.empty() &&
+      !is_expired(swiftinfo_expires, s->cct)) {
+    is_admin_info_enabled = true;
+  }
+
+  s->formatter->open_object_section("info");
+
+  for (const auto& pair : swift_info) {
+    if(!is_admin_info_enabled && pair.second.is_admin_info)
+      continue;
+
+    if (!pair.second.list_data) {
+      s->formatter->open_object_section((pair.first).c_str());
+      s->formatter->close_section();
+    }
+    else {
+      pair.second.list_data(*(s->formatter), s->cct->_conf, *store);
+    }
+  }
+
+  s->formatter->close_section();
+}
+
+void RGWInfo_ObjStore_SWIFT::send_response()
+{
+  if (op_ret <  0) {
+    op_ret = STATUS_NO_CONTENT;
+  }
+  set_req_state_err(s, op_ret);
+  dump_errno(s);
+  end_header(s, this);
+  rgw_flush_formatter_and_reset(s, s->formatter);
+}
+
+void RGWInfo_ObjStore_SWIFT::list_swift_data(Formatter& formatter,
+                                              const ConfigProxy& config,
+                                              RGWRados& store)
+{
+  formatter.open_object_section("swift");
+  formatter.dump_int("max_file_size", config->rgw_max_put_size);
+  formatter.dump_int("container_listing_limit", RGW_LIST_BUCKETS_LIMIT_MAX);
+
+  string ceph_version(CEPH_GIT_NICE_VER);
+  formatter.dump_string("version", ceph_version);
+
+  const size_t max_attr_name_len = \
+    g_conf().get_val<Option::size_t>("rgw_max_attr_name_len");
+  if (max_attr_name_len) {
+    const size_t meta_name_limit = \
+      max_attr_name_len - strlen(RGW_ATTR_PREFIX RGW_AMZ_META_PREFIX);
+    formatter.dump_int("max_meta_name_length", meta_name_limit);
+  }
+
+  const size_t meta_value_limit = g_conf().get_val<Option::size_t>("rgw_max_attr_size");
+  if (meta_value_limit) {
+    formatter.dump_int("max_meta_value_length", meta_value_limit);
+  }
+
+  const size_t meta_num_limit = \
+    g_conf().get_val<uint64_t>("rgw_max_attrs_num_in_req");
+  if (meta_num_limit) {
+    formatter.dump_int("max_meta_count", meta_num_limit);
+  }
+
+  formatter.open_array_section("policies");
+  const RGWZoneGroup& zonegroup = store.svc.zone->get_zonegroup();
+
+  for (const auto& placement_targets : zonegroup.placement_targets) {
+    formatter.open_object_section("policy");
+    if (placement_targets.second.name.compare(zonegroup.default_placement.name) == 0)
+      formatter.dump_bool("default", true);
+    formatter.dump_string("name", placement_targets.second.name.c_str());
+    formatter.close_section();
+  }
+  formatter.close_section();
+
+  formatter.dump_int("max_object_name_size", RGWHandler_REST::MAX_OBJ_NAME_LEN);
+  formatter.dump_bool("strict_cors_mode", true);
+  formatter.dump_int("max_container_name_length", RGWHandler_REST::MAX_BUCKET_NAME_LEN);
+  formatter.close_section();
+}
+
+void RGWInfo_ObjStore_SWIFT::list_tempauth_data(Formatter& formatter,
+                                                 const ConfigProxy& config,
+                                                 RGWRados& store)
+{
+  formatter.open_object_section("tempauth");
+  formatter.dump_bool("account_acls", true);
+  formatter.close_section();
+}
+void RGWInfo_ObjStore_SWIFT::list_tempurl_data(Formatter& formatter,
+                                                const ConfigProxy& config,
+                                                RGWRados& store)
+{
+  formatter.open_object_section("tempurl");
+  formatter.open_array_section("methods");
+  formatter.dump_string("methodname", "GET");
+  formatter.dump_string("methodname", "HEAD");
+  formatter.dump_string("methodname", "PUT");
+  formatter.dump_string("methodname", "POST");
+  formatter.dump_string("methodname", "DELETE");
+  formatter.close_section();
+  formatter.close_section();
+}
+
+void RGWInfo_ObjStore_SWIFT::list_slo_data(Formatter& formatter,
+                                            const ConfigProxy& config,
+                                            RGWRados& store)
+{
+  formatter.open_object_section("slo");
+  formatter.dump_int("max_manifest_segments", config->rgw_max_slo_entries);
+  formatter.close_section();
+}
+
+bool RGWInfo_ObjStore_SWIFT::is_expired(const std::string& expires, CephContext* cct)
+{
+  string err;
+  const utime_t now = ceph_clock_now();
+  const uint64_t expiration = (uint64_t)strict_strtoll(expires.c_str(),
+                                                       10, &err);
+  if (!err.empty()) {
+    ldout(cct, 5) << "failed to parse siginfo_expires: " << err << dendl;
+    return true;
+  }
+
+  if (expiration <= (uint64_t)now.sec()) {
+    ldout(cct, 5) << "siginfo expired: " << expiration << " <= " << now.sec() << dendl;
+    return true;
+  }
+
+  return false;
+}
+
+
+void RGWFormPost::init(RGWRados* const store,
+                       req_state* const s,
+                       RGWHandler* const dialect_handler)
+{
+  prefix = std::move(s->object.name);
+  s->object = rgw_obj_key();
+
+  return RGWPostObj_ObjStore::init(store, s, dialect_handler);
+}
+
+std::size_t RGWFormPost::get_max_file_size() /*const*/
+{
+  std::string max_str = get_part_str(ctrl_parts, "max_file_size", "0");
+
+  std::string err;
+  const std::size_t max_file_size =
+    static_cast<uint64_t>(strict_strtoll(max_str.c_str(), 10, &err));
+
+  if (! err.empty()) {
+    ldout(s->cct, 5) << "failed to parse FormPost's max_file_size: " << err
+                     << dendl;
+    return 0;
+  }
+
+  return max_file_size;
+}
+
+bool RGWFormPost::is_non_expired()
+{
+  std::string expires = get_part_str(ctrl_parts, "expires", "0");
+
+  std::string err;
+  const uint64_t expires_timestamp =
+    static_cast<uint64_t>(strict_strtoll(expires.c_str(), 10, &err));
+
+  if (! err.empty()) {
+    dout(5) << "failed to parse FormPost's expires: " << err << dendl;
+    return false;
+  }
+
+  const utime_t now = ceph_clock_now();
+  if (expires_timestamp <= static_cast<uint64_t>(now.sec())) {
+    dout(5) << "FormPost form expired: "
+            << expires_timestamp << " <= " << now.sec() << dendl;
+    return false;
+  }
+
+  return true;
+}
+
+bool RGWFormPost::is_integral()
+{
+  const std::string form_signature = get_part_str(ctrl_parts, "signature");
+
+  try {
+    get_owner_info(s, *s->user);
+    s->auth.identity = rgw::auth::transform_old_authinfo(s);
+  } catch (...) {
+    ldout(s->cct, 5) << "cannot get user_info of account's owner" << dendl;
+    return false;
+  }
+
+  for (const auto& kv : s->user->temp_url_keys) {
+    const int temp_url_key_num = kv.first;
+    const string& temp_url_key = kv.second;
+
+    if (temp_url_key.empty()) {
+      continue;
+    }
+
+    SignatureHelper sig_helper;
+    sig_helper.calc(temp_url_key,
+                    s->info.request_uri,
+                    get_part_str(ctrl_parts, "redirect"),
+                    get_part_str(ctrl_parts, "max_file_size", "0"),
+                    get_part_str(ctrl_parts, "max_file_count", "0"),
+                    get_part_str(ctrl_parts, "expires", "0"));
+
+    const auto local_sig = sig_helper.get_signature();
+
+    ldout(s->cct, 20) << "FormPost signature [" << temp_url_key_num << "]"
+                      << " (calculated): " << local_sig << dendl;
+
+    if (sig_helper.is_equal_to(form_signature)) {
+      return true;
+    } else {
+      ldout(s->cct, 5) << "FormPost's signature mismatch: "
+                       << local_sig << " != " << form_signature << dendl;
+    }
+  }
+
+  return false;
+}
+
+void RGWFormPost::get_owner_info(const req_state* const s,
+                                   RGWUserInfo& owner_info) const
+{
+  /* We cannot use req_state::bucket_name because it isn't available
+   * now. It will be initialized in RGWHandler_REST_SWIFT::postauth_init(). */
+  const string& bucket_name = s->init_state.url_bucket;
+
+  /* TempURL in Formpost only requires that bucket name is specified. */
+  if (bucket_name.empty()) {
+    throw -EPERM;
+  }
+
+  string bucket_tenant;
+  if (!s->account_name.empty()) {
+    RGWUserInfo uinfo;
+    bool found = false;
+
+    const rgw_user uid(s->account_name);
+    if (uid.tenant.empty()) {
+      const rgw_user tenanted_uid(uid.id, uid.id);
+
+      if (rgw_get_user_info_by_uid(store, tenanted_uid, uinfo) >= 0) {
+        /* Succeeded. */
+        bucket_tenant = uinfo.user_id.tenant;
+        found = true;
+      }
+    }
+
+    if (!found && rgw_get_user_info_by_uid(store, uid, uinfo) < 0) {
+      throw -EPERM;
+    } else {
+      bucket_tenant = uinfo.user_id.tenant;
+    }
+  }
+
+  /* Need to get user info of bucket owner. */
+  RGWBucketInfo bucket_info;
+  int ret = store->get_bucket_info(*s->sysobj_ctx,
+                                   bucket_tenant, bucket_name,
+                                   bucket_info, nullptr);
+  if (ret < 0) {
+    throw ret;
+  }
+
+  ldout(s->cct, 20) << "temp url user (bucket owner): " << bucket_info.owner
+                 << dendl;
+
+  if (rgw_get_user_info_by_uid(store, bucket_info.owner, owner_info) < 0) {
+    throw -EPERM;
+  }
+}
+
+int RGWFormPost::get_params()
+{
+  /* The parentt class extracts boundary info from the Content-Type. */
+  int ret = RGWPostObj_ObjStore::get_params();
+  if (ret < 0) {
+    return ret;
+  }
+
+  policy.create_default(s->user->user_id, s->user->display_name);
+
+  /* Let's start parsing the HTTP body by parsing each form part step-
+   * by-step till encountering the first part with file data. */
+  do {
+    struct post_form_part part;
+    ret = read_form_part_header(&part, stream_done);
+    if (ret < 0) {
+      return ret;
+    }
+
+    if (s->cct->_conf->subsys.should_gather<ceph_subsys_rgw, 20>()) {
+      ldout(s->cct, 20) << "read part header -- part.name="
+                        << part.name << dendl;
+
+      for (const auto& pair : part.fields) {
+        ldout(s->cct, 20) << "field.name=" << pair.first << dendl;
+        ldout(s->cct, 20) << "field.val=" << pair.second.val << dendl;
+        ldout(s->cct, 20) << "field.params:" << dendl;
+
+        for (const auto& param_pair : pair.second.params) {
+          ldout(s->cct, 20) << " " << param_pair.first
+                            << " -> " << param_pair.second << dendl;
+        }
+      }
+    }
+
+    if (stream_done) {
+      /* Unexpected here. */
+      err_msg = "Malformed request";
+      return -EINVAL;
+    }
+
+    const auto field_iter = part.fields.find("Content-Disposition");
+    if (std::end(part.fields) != field_iter &&
+        std::end(field_iter->second.params) != field_iter->second.params.find("filename")) {
+      /* First data part ahead. */
+      current_data_part = std::move(part);
+
+      /* Stop the iteration. We can assume that all control parts have been
+       * already parsed. The rest of HTTP body should contain data parts
+       * only. They will be picked up by ::get_data(). */
+      break;
+    } else {
+      /* Control part ahead. Receive, parse and store for later usage. */
+      bool boundary;
+      ret = read_data(part.data, s->cct->_conf->rgw_max_chunk_size,
+                      boundary, stream_done);
+      if (ret < 0) {
+        return ret;
+      } else if (! boundary) {
+        err_msg = "Couldn't find boundary";
+        return -EINVAL;
+      }
+
+      ctrl_parts[part.name] = std::move(part);
+    }
+  } while (! stream_done);
+
+  min_len = 0;
+  max_len = get_max_file_size();
+
+  if (! current_data_part) {
+    err_msg = "FormPost: no files to process";
+    return -EINVAL;
+  }
+
+  if (! is_non_expired()) {
+    err_msg = "FormPost: Form Expired";
+    return -EPERM;
+  }
+
+  if (! is_integral()) {
+    err_msg = "FormPost: Invalid Signature";
+    return -EPERM;
+  }
+
+  return 0;
+}
+
+std::string RGWFormPost::get_current_filename() const
+{
+  try {
+    const auto& field = current_data_part->fields.at("Content-Disposition");
+    const auto iter = field.params.find("filename");
+
+    if (std::end(field.params) != iter) {
+      return prefix + iter->second;
+    }
+  } catch (std::out_of_range&) {
+    /* NOP */;
+  }
+
+  return prefix;
+}
+
+std::string RGWFormPost::get_current_content_type() const
+{
+  try {
+    const auto& field = current_data_part->fields.at("Content-Type");
+    return field.val;
+  } catch (std::out_of_range&) {
+    /* NOP */;
+  }
+
+  return std::string();
+}
+
+bool RGWFormPost::is_next_file_to_upload()
+{
+  if (! stream_done) {
+    /* We have at least one additional part in the body. */
+    struct post_form_part part;
+    int r = read_form_part_header(&part, stream_done);
+    if (r < 0) {
+      return false;
+    }
+
+    const auto field_iter = part.fields.find("Content-Disposition");
+    if (std::end(part.fields) != field_iter) {
+      const auto& params = field_iter->second.params;
+      const auto& filename_iter = params.find("filename");
+
+      if (std::end(params) != filename_iter && ! filename_iter->second.empty()) {
+        current_data_part = std::move(part);
+        return true;
+      }
+    }
+  }
+
+  return false;
+}
+
+int RGWFormPost::get_data(ceph::bufferlist& bl, bool& again)
+{
+  bool boundary;
+
+  int r = read_data(bl, s->cct->_conf->rgw_max_chunk_size,
+                    boundary, stream_done);
+  if (r < 0) {
+    return r;
+  }
+
+  /* Tell RGWPostObj::execute() that it has some data to put. */
+  again = !boundary;
+
+  return bl.length();
+}
+
+void RGWFormPost::send_response()
+{
+  std::string redirect = get_part_str(ctrl_parts, "redirect");
+  if (! redirect.empty()) {
+    op_ret = STATUS_REDIRECT;
+  }
+
+  set_req_state_err(s, op_ret);
+  s->err.err_code = err_msg;
+  dump_errno(s);
+  if (! redirect.empty()) {
+    dump_redirect(s, redirect);
+  }
+  end_header(s, this);
+}
+
+bool RGWFormPost::is_formpost_req(req_state* const s)
+{
+  std::string content_type;
+  std::map<std::string, std::string> params;
+
+  parse_boundary_params(s->info.env->get("CONTENT_TYPE", ""),
+                        content_type, params);
+
+  return boost::algorithm::iequals(content_type, "multipart/form-data") &&
+         params.count("boundary") > 0;
+}
+
+
+RGWOp *RGWHandler_REST_Service_SWIFT::op_get()
+{
+  return new RGWListBuckets_ObjStore_SWIFT;
+}
+
+RGWOp *RGWHandler_REST_Service_SWIFT::op_head()
+{
+  return new RGWStatAccount_ObjStore_SWIFT;
+}
+
+RGWOp *RGWHandler_REST_Service_SWIFT::op_put()
+{
+  if (s->info.args.exists("extract-archive")) {
+    return new RGWBulkUploadOp_ObjStore_SWIFT;
+  }
+  return nullptr;
+}
+
+RGWOp *RGWHandler_REST_Service_SWIFT::op_post()
+{
+  if (s->info.args.exists("bulk-delete")) {
+    return new RGWBulkDelete_ObjStore_SWIFT;
+  }
+  return new RGWPutMetadataAccount_ObjStore_SWIFT;
+}
+
+RGWOp *RGWHandler_REST_Service_SWIFT::op_delete()
+{
+  if (s->info.args.exists("bulk-delete")) {
+    return new RGWBulkDelete_ObjStore_SWIFT;
+  }
+  return NULL;
+}
+
+int RGWSwiftWebsiteHandler::serve_errordoc(const int http_ret,
+                                           const std::string error_doc)
+{
+  /* Try to throw it all away. */
+  s->formatter->reset();
+
+  class RGWGetErrorPage : public RGWGetObj_ObjStore_SWIFT {
+  public:
+    RGWGetErrorPage(RGWRados* const store,
+                    RGWHandler_REST* const handler,
+                    req_state* const s,
+                    const int http_ret) {
+      /* Calling a virtual from the base class is safe as the subobject should
+       * be properly initialized and we haven't overridden the init method. */
+      init(store, s, handler);
+      set_get_data(true);
+      set_custom_http_response(http_ret);
+    }
+
+    int error_handler(const int err_no,
+                      std::string* const error_content) override {
+      /* Enforce that any error generated while getting the error page will
+       * not be send to a client. This allows us to recover from the double
+       * fault situation by sending the original message. */
+      return 0;
+    }
+  } get_errpage_op(store, handler, s, http_ret);
+
+  s->object = std::to_string(http_ret) + error_doc;
+
+  RGWOp* newop = &get_errpage_op;
+  RGWRequest req(0);
+  return rgw_process_authenticated(handler, newop, &req, s, true);
+}
+
+int RGWSwiftWebsiteHandler::error_handler(const int err_no,
+                                          std::string* const error_content)
+{
+  const auto& ws_conf = s->bucket_info.website_conf;
+
+  if (can_be_website_req() && ! ws_conf.error_doc.empty()) {
+    set_req_state_err(s, err_no);
+    return serve_errordoc(s->err.http_ret, ws_conf.error_doc);
+  }
+
+  /* Let's go to the default, no-op handler. */
+  return err_no;
+}
+
+bool RGWSwiftWebsiteHandler::is_web_mode() const
+{
+  const boost::string_ref webmode = s->info.env->get("HTTP_X_WEB_MODE", "");
+  return boost::algorithm::iequals(webmode, "true");
+}
+
+bool RGWSwiftWebsiteHandler::can_be_website_req() const
+{
+  /* Static website works only with the GET or HEAD method. Nothing more. */
+  static const std::set<boost::string_ref> ws_methods = { "GET", "HEAD" };
+  if (ws_methods.count(s->info.method) == 0) {
+    return false;
+  }
+
+  /* We also need to handle early failures from the auth system. In such cases
+   * req_state::auth.identity may be empty. Let's treat that the same way as
+   * the anonymous access. */
+  if (! s->auth.identity) {
+    return true;
+  }
+
+  /* Swift serves websites only for anonymous requests unless client explicitly
+   * requested this behaviour by supplying X-Web-Mode HTTP header set to true. */
+  if (s->auth.identity->is_anonymous() || is_web_mode()) {
+    return true;
+  }
+
+  return false;
+}
+
+RGWOp* RGWSwiftWebsiteHandler::get_ws_redirect_op()
+{
+  class RGWMovedPermanently: public RGWOp {
+    const std::string location;
+  public:
+    explicit RGWMovedPermanently(const std::string& location)
+      : location(location) {
+    }
+
+    int verify_permission() override {
+      return 0;
+    }
+
+    void execute() override {
+      op_ret = -ERR_PERMANENT_REDIRECT;
+      return;
+    }
+
+    void send_response() override {
+      set_req_state_err(s, op_ret);
+      dump_errno(s);
+      dump_content_length(s, 0);
+      dump_redirect(s, location);
+      end_header(s, this);
+    }
+
+    const char* name() const override {
+      return "RGWMovedPermanently";
+    }
+  };
+
+  return new RGWMovedPermanently(s->info.request_uri + '/');
+}
+
+RGWOp* RGWSwiftWebsiteHandler::get_ws_index_op()
+{
+  /* Retarget to get obj on requested index file. */
+  if (! s->object.empty()) {
+    s->object = s->object.name +
+                s->bucket_info.website_conf.get_index_doc();
+  } else {
+    s->object = s->bucket_info.website_conf.get_index_doc();
+  }
+
+  auto getop = new RGWGetObj_ObjStore_SWIFT;
+  getop->set_get_data(boost::algorithm::equals("GET", s->info.method));
+
+  return getop;
+}
+
+RGWOp* RGWSwiftWebsiteHandler::get_ws_listing_op()
+{
+  class RGWWebsiteListing : public RGWListBucket_ObjStore_SWIFT {
+    const std::string prefix_override;
+
+    int get_params() override {
+      prefix = prefix_override;
+      max = default_max;
+      delimiter = "/";
+      return 0;
+    }
+
+    void send_response() override {
+      /* Generate the header now. */
+      set_req_state_err(s, op_ret);
+      dump_errno(s);
+      dump_container_metadata(s, bucket, bucket_quota,
+                              s->bucket_info.website_conf);
+      end_header(s, this, "text/html");
+      if (op_ret < 0) {
+        return;
+      }
+
+      /* Now it's the time to start generating HTML bucket listing.
+       * All the crazy stuff with crafting tags will be delegated to
+       * RGWSwiftWebsiteListingFormatter. */
+      std::stringstream ss;
+      RGWSwiftWebsiteListingFormatter htmler(ss, prefix);
+
+      const auto& ws_conf = s->bucket_info.website_conf;
+      htmler.generate_header(s->decoded_uri,
+                             ws_conf.listing_css_doc);
+
+      for (const auto& pair : common_prefixes) {
+        std::string subdir_name = pair.first;
+        if (! subdir_name.empty()) {
+          /* To be compliant with Swift we need to remove the trailing
+           * slash. */
+          subdir_name.pop_back();
+        }
+
+        htmler.dump_subdir(subdir_name);
+      }
+
+      for (const rgw_bucket_dir_entry& obj : objs) {
+        if (! common_prefixes.count(obj.key.name + '/')) {
+          htmler.dump_object(obj);
+        }
+      }
+
+      htmler.generate_footer();
+      dump_body(s, ss.str());
+    }
+  public:
+    /* Taking prefix_override by value to leverage std::string r-value ref
+     * ctor and thus avoid extra memory copying/increasing ref counter. */
+    explicit RGWWebsiteListing(std::string prefix_override)
+      : prefix_override(std::move(prefix_override)) {
+    }
+  };
+
+  std::string prefix = std::move(s->object.name);
+  s->object = rgw_obj_key();
+
+  return new RGWWebsiteListing(std::move(prefix));
+}
+
+bool RGWSwiftWebsiteHandler::is_web_dir() const
+{
+  std::string subdir_name = url_decode(s->object.name);
+
+  /* Remove character from the subdir name if it is "/". */
+  if (subdir_name.empty()) {
+    return false;
+  } else if (subdir_name.back() == '/') {
+    subdir_name.pop_back();
+    if (subdir_name.empty()) {
+      return false;
+    }
+  }
+
+  rgw_obj obj(s->bucket, std::move(subdir_name));
+
+  /* First, get attrset of the object we'll try to retrieve. */
+  RGWObjectCtx& obj_ctx = *static_cast<RGWObjectCtx *>(s->obj_ctx);
+  obj_ctx.set_atomic(obj);
+  obj_ctx.set_prefetch_data(obj);
+
+  RGWObjState* state = nullptr;
+  if (store->get_obj_state(&obj_ctx, s->bucket_info, obj, &state, false) < 0) {
+    return false;
+  }
+
+  /* A nonexistent object cannot be a considered as a marker representing
+   * the emulation of catalog in FS hierarchy. */
+  if (! state->exists) {
+    return false;
+  }
+
+  /* Decode the content type. */
+  std::string content_type;
+  get_contype_from_attrs(state->attrset, content_type);
+
+  const auto& ws_conf = s->bucket_info.website_conf;
+  const std::string subdir_marker = ws_conf.subdir_marker.empty()
+                                      ? "application/directory"
+                                      : ws_conf.subdir_marker;
+  return subdir_marker == content_type && state->size <= 1;
+}
+
+bool RGWSwiftWebsiteHandler::is_index_present(const std::string& index)
+{
+  rgw_obj obj(s->bucket, index);
+
+  RGWObjectCtx& obj_ctx = *static_cast<RGWObjectCtx *>(s->obj_ctx);
+  obj_ctx.set_atomic(obj);
+  obj_ctx.set_prefetch_data(obj);
+
+  RGWObjState* state = nullptr;
+  if (store->get_obj_state(&obj_ctx, s->bucket_info, obj, &state, false) < 0) {
+    return false;
+  }
+
+  /* A nonexistent object cannot be a considered as a viable index. We will
+   * try to list the bucket or - if this is impossible - return an error. */
+  return state->exists;
+}
+
+int RGWSwiftWebsiteHandler::retarget_bucket(RGWOp* op, RGWOp** new_op)
+{
+  ldout(s->cct, 10) << "Starting retarget" << dendl;
+  RGWOp* op_override = nullptr;
+
+  /* In Swift static web content is served if the request is anonymous or
+   * has X-Web-Mode HTTP header specified to true. */
+  if (can_be_website_req()) {
+    const auto& ws_conf = s->bucket_info.website_conf;
+    const auto& index = s->bucket_info.website_conf.get_index_doc();
+
+    if (s->decoded_uri.back() != '/') {
+      op_override = get_ws_redirect_op();
+    } else if (! index.empty() && is_index_present(index)) {
+      op_override = get_ws_index_op();
+    } else if (ws_conf.listing_enabled) {
+      op_override = get_ws_listing_op();
+    }
+  }
+
+  if (op_override) {
+    handler->put_op(op);
+    op_override->init(store, s, handler);
+
+    *new_op = op_override;
+  } else {
+    *new_op = op;
+  }
+
+  /* Return 404 Not Found is the request has web mode enforced but we static web
+   * wasn't able to serve it accordingly. */
+  return ! op_override && is_web_mode() ? -ENOENT : 0;
+}
+
+int RGWSwiftWebsiteHandler::retarget_object(RGWOp* op, RGWOp** new_op)
+{
+  ldout(s->cct, 10) << "Starting object retarget" << dendl;
+  RGWOp* op_override = nullptr;
+
+  /* In Swift static web content is served if the request is anonymous or
+   * has X-Web-Mode HTTP header specified to true. */
+  if (can_be_website_req() && is_web_dir()) {
+    const auto& ws_conf = s->bucket_info.website_conf;
+    const auto& index = s->bucket_info.website_conf.get_index_doc();
+
+    if (s->decoded_uri.back() != '/') {
+      op_override = get_ws_redirect_op();
+    } else if (! index.empty() && is_index_present(index)) {
+      op_override = get_ws_index_op();
+    } else if (ws_conf.listing_enabled) {
+      op_override = get_ws_listing_op();
+    }
+  } else {
+    /* A regular request or the specified object isn't a subdirectory marker.
+     * We don't need any re-targeting. Error handling (like sending a custom
+     * error page) will be performed by error_handler of the actual RGWOp. */
+    return 0;
+  }
+
+  if (op_override) {
+    handler->put_op(op);
+    op_override->init(store, s, handler);
+
+    *new_op = op_override;
+  } else {
+    *new_op = op;
+  }
+
+  /* Return 404 Not Found if we aren't able to re-target for subdir marker. */
+  return ! op_override ? -ENOENT : 0;
+}
+
+
+RGWOp *RGWHandler_REST_Bucket_SWIFT::get_obj_op(bool get_data)
+{
+  if (is_acl_op()) {
+    return new RGWGetACLs_ObjStore_SWIFT;
+  }
+
+  if (get_data)
+    return new RGWListBucket_ObjStore_SWIFT;
+  else
+    return new RGWStatBucket_ObjStore_SWIFT;
+}
+
+RGWOp *RGWHandler_REST_Bucket_SWIFT::op_get()
+{
+  return get_obj_op(true);
+}
+
+RGWOp *RGWHandler_REST_Bucket_SWIFT::op_head()
+{
+  return get_obj_op(false);
+}
+
+RGWOp *RGWHandler_REST_Bucket_SWIFT::op_put()
+{
+  if (is_acl_op()) {
+    return new RGWPutACLs_ObjStore_SWIFT;
+  }
+  if(s->info.args.exists("extract-archive")) {
+    return new RGWBulkUploadOp_ObjStore_SWIFT;
+  }
+  return new RGWCreateBucket_ObjStore_SWIFT;
+}
+
+RGWOp *RGWHandler_REST_Bucket_SWIFT::op_delete()
+{
+  return new RGWDeleteBucket_ObjStore_SWIFT;
+}
+
+RGWOp *RGWHandler_REST_Bucket_SWIFT::op_post()
+{
+  if (RGWFormPost::is_formpost_req(s)) {
+    return new RGWFormPost;
+  } else {
+    return new RGWPutMetadataBucket_ObjStore_SWIFT;
+  }
+}
+
+RGWOp *RGWHandler_REST_Bucket_SWIFT::op_options()
+{
+  return new RGWOptionsCORS_ObjStore_SWIFT;
+}
+
+
+RGWOp *RGWHandler_REST_Obj_SWIFT::get_obj_op(bool get_data)
+{
+  if (is_acl_op()) {
+    return new RGWGetACLs_ObjStore_SWIFT;
+  }
+
+  RGWGetObj_ObjStore_SWIFT *get_obj_op = new RGWGetObj_ObjStore_SWIFT;
+  get_obj_op->set_get_data(get_data);
+  return get_obj_op;
+}
+
+RGWOp *RGWHandler_REST_Obj_SWIFT::op_get()
+{
+  return get_obj_op(true);
+}
+
+RGWOp *RGWHandler_REST_Obj_SWIFT::op_head()
+{
+  return get_obj_op(false);
+}
+
+RGWOp *RGWHandler_REST_Obj_SWIFT::op_put()
+{
+  if (is_acl_op()) {
+    return new RGWPutACLs_ObjStore_SWIFT;
+  }
+  if(s->info.args.exists("extract-archive")) {
+    return new RGWBulkUploadOp_ObjStore_SWIFT;
+  }
+  if (s->init_state.src_bucket.empty())
+    return new RGWPutObj_ObjStore_SWIFT;
+  else
+    return new RGWCopyObj_ObjStore_SWIFT;
+}
+
+RGWOp *RGWHandler_REST_Obj_SWIFT::op_delete()
+{
+  return new RGWDeleteObj_ObjStore_SWIFT;
+}
+
+RGWOp *RGWHandler_REST_Obj_SWIFT::op_post()
+{
+  if (RGWFormPost::is_formpost_req(s)) {
+    return new RGWFormPost;
+  } else {
+    return new RGWPutMetadataObject_ObjStore_SWIFT;
+  }
+}
+
+RGWOp *RGWHandler_REST_Obj_SWIFT::op_copy()
+{
+  return new RGWCopyObj_ObjStore_SWIFT;
+}
+
+RGWOp *RGWHandler_REST_Obj_SWIFT::op_options()
+{
+  return new RGWOptionsCORS_ObjStore_SWIFT;
+}
+
+
+int RGWHandler_REST_SWIFT::authorize(const DoutPrefixProvider *dpp)
+{
+  return rgw::auth::Strategy::apply(dpp, auth_strategy, s);
+}
+
+int RGWHandler_REST_SWIFT::postauth_init()
+{
+  struct req_init_state* t = &s->init_state;
+
+  /* XXX Stub this until Swift Auth sets account into URL. */
+  s->bucket_tenant = s->user->user_id.tenant;
+  s->bucket_name = t->url_bucket;
+
+  dout(10) << "s->object=" <<
+    (!s->object.empty() ? s->object : rgw_obj_key("<NULL>"))
+           << " s->bucket="
+	   << rgw_make_bucket_entry_name(s->bucket_tenant, s->bucket_name)
+	   << dendl;
+
+  int ret;
+  ret = rgw_validate_tenant_name(s->bucket_tenant);
+  if (ret)
+    return ret;
+  ret = validate_bucket_name(s->bucket_name);
+  if (ret)
+    return ret;
+  ret = validate_object_name(s->object.name);
+  if (ret)
+    return ret;
+
+  if (!t->src_bucket.empty()) {
+    /*
+     * We don't allow cross-tenant copy at present. It requires account
+     * names in the URL for Swift.
+     */
+    s->src_tenant_name = s->user->user_id.tenant;
+    s->src_bucket_name = t->src_bucket;
+
+    ret = validate_bucket_name(s->src_bucket_name);
+    if (ret < 0) {
+      return ret;
+    }
+    ret = validate_object_name(s->src_object.name);
+    if (ret < 0) {
+      return ret;
+    }
+  }
+
+  return 0;
+}
+
+int RGWHandler_REST_SWIFT::validate_bucket_name(const string& bucket)
+{
+  const size_t len = bucket.size();
+
+  if (len > MAX_BUCKET_NAME_LEN) {
+    /* Bucket Name too long. Generate custom error message and bind it
+     * to an R-value reference. */
+    const auto msg = boost::str(
+      boost::format("Container name length of %lld longer than %lld")
+        % len % int(MAX_BUCKET_NAME_LEN));
+    set_req_state_err(s, ERR_INVALID_BUCKET_NAME, msg);
+    return -ERR_INVALID_BUCKET_NAME;
+  }
+
+  const auto ret = RGWHandler_REST::validate_bucket_name(bucket);
+  if (ret < 0) {
+    return ret;
+  }
+
+  if (len == 0)
+    return 0;
+
+  if (bucket[0] == '.')
+    return -ERR_INVALID_BUCKET_NAME;
+
+  if (check_utf8(bucket.c_str(), len))
+    return -ERR_INVALID_UTF8;
+
+  const char *s = bucket.c_str();
+
+  for (size_t i = 0; i < len; ++i, ++s) {
+    if (*(unsigned char *)s == 0xff)
+      return -ERR_INVALID_BUCKET_NAME;
+    if (*(unsigned char *)s == '/')
+      return -ERR_INVALID_BUCKET_NAME;
+  }
+
+  return 0;
+}
+
+static void next_tok(string& str, string& tok, char delim)
+{
+  if (str.size() == 0) {
+    tok = "";
+    return;
+  }
+  tok = str;
+  int pos = str.find(delim);
+  if (pos > 0) {
+    tok = str.substr(0, pos);
+    str = str.substr(pos + 1);
+  } else {
+    str = "";
+  }
+}
+
+int RGWHandler_REST_SWIFT::init_from_header(struct req_state* const s,
+                                            const std::string& frontend_prefix)
+{
+  string req;
+  string first;
+
+  s->prot_flags |= RGW_REST_SWIFT;
+
+  char reqbuf[frontend_prefix.length() + s->decoded_uri.length() + 1];
+  sprintf(reqbuf, "%s%s", frontend_prefix.c_str(), s->decoded_uri.c_str());
+  const char *req_name = reqbuf;
+
+  const char *p;
+
+  if (*req_name == '?') {
+    p = req_name;
+  } else {
+    p = s->info.request_params.c_str();
+  }
+
+  s->info.args.set(p);
+  s->info.args.parse();
+
+  /* Skip the leading slash of URL hierarchy. */
+  if (req_name[0] != '/') {
+    return 0;
+  } else {
+    req_name++;
+  }
+
+  if ('\0' == req_name[0]) {
+    return g_conf()->rgw_swift_url_prefix == "/" ? -ERR_BAD_URL : 0;
+  }
+
+  req = req_name;
+
+  size_t pos = req.find('/');
+  if (std::string::npos != pos && g_conf()->rgw_swift_url_prefix != "/") {
+    bool cut_url = g_conf()->rgw_swift_url_prefix.length();
+    first = req.substr(0, pos);
+
+    if (first.compare(g_conf()->rgw_swift_url_prefix) == 0) {
+      if (cut_url) {
+        /* Rewind to the "v1/..." part. */
+        next_tok(req, first, '/');
+      }
+    }
+  } else if (req.compare(g_conf()->rgw_swift_url_prefix) == 0) {
+    s->formatter = new RGWFormatter_Plain;
+    return -ERR_BAD_URL;
+  } else {
+    first = req;
+  }
+
+  std::string tenant_path;
+  if (! g_conf()->rgw_swift_tenant_name.empty()) {
+    tenant_path = "/AUTH_";
+    tenant_path.append(g_conf()->rgw_swift_tenant_name);
+  }
+
+  /* verify that the request_uri conforms with what's expected */
+  char buf[g_conf()->rgw_swift_url_prefix.length() + 16 + tenant_path.length()];
+  int blen;
+  if (g_conf()->rgw_swift_url_prefix == "/") {
+    blen = sprintf(buf, "/v1%s", tenant_path.c_str());
+  } else {
+    blen = sprintf(buf, "/%s/v1%s",
+                   g_conf()->rgw_swift_url_prefix.c_str(), tenant_path.c_str());
+  }
+
+  if (strncmp(reqbuf, buf, blen) != 0) {
+    return -ENOENT;
+  }
+
+  int ret = allocate_formatter(s, RGW_FORMAT_PLAIN, true);
+  if (ret < 0)
+    return ret;
+
+  string ver;
+
+  next_tok(req, ver, '/');
+
+  if (!tenant_path.empty() || g_conf()->rgw_swift_account_in_url) {
+    string account_name;
+    next_tok(req, account_name, '/');
+
+    /* Erase all pre-defined prefixes like "AUTH_" or "KEY_". */
+    const vector<string> skipped_prefixes = { "AUTH_", "KEY_" };
+
+    for (const auto pfx : skipped_prefixes) {
+      const size_t comp_len = min(account_name.length(), pfx.length());
+      if (account_name.compare(0, comp_len, pfx) == 0) {
+        /* Prefix is present. Drop it. */
+        account_name = account_name.substr(comp_len);
+        break;
+      }
+    }
+
+    if (account_name.empty()) {
+      return -ERR_PRECONDITION_FAILED;
+    } else {
+      s->account_name = account_name;
+    }
+  }
+
+  next_tok(req, first, '/');
+
+  dout(10) << "ver=" << ver << " first=" << first << " req=" << req << dendl;
+  if (first.size() == 0)
+    return 0;
+
+  s->info.effective_uri = "/" + first;
+
+  // Save bucket to tide us over until token is parsed.
+  s->init_state.url_bucket = first;
+
+  if (req.size()) {
+    s->object =
+      rgw_obj_key(req, s->info.env->get("HTTP_X_OBJECT_VERSION_ID", "")); /* rgw swift extension */
+    s->info.effective_uri.append("/" + s->object.name);
+  }
+
+  return 0;
+}
+
+int RGWHandler_REST_SWIFT::init(RGWRados* store, struct req_state* s,
+				rgw::io::BasicClient *cio)
+{
+  struct req_init_state *t = &s->init_state;
+
+  s->dialect = "swift";
+
+  std::string copy_source = s->info.env->get("HTTP_X_COPY_FROM", "");
+  if (! copy_source.empty()) {
+    bool result = RGWCopyObj::parse_copy_location(copy_source, t->src_bucket,
+						  s->src_object);
+    if (!result)
+      return -ERR_BAD_URL;
+  }
+
+  if (s->op == OP_COPY) {
+    std::string req_dest = s->info.env->get("HTTP_DESTINATION", "");
+    if (req_dest.empty())
+      return -ERR_BAD_URL;
+
+    std::string dest_bucket_name;
+    rgw_obj_key dest_obj_key;
+    bool result =
+      RGWCopyObj::parse_copy_location(req_dest, dest_bucket_name,
+				      dest_obj_key);
+    if (!result)
+       return -ERR_BAD_URL;
+
+    std::string dest_object = dest_obj_key.name;
+
+    /* convert COPY operation into PUT */
+    t->src_bucket = t->url_bucket;
+    s->src_object = s->object;
+    t->url_bucket = dest_bucket_name;
+    s->object = rgw_obj_key(dest_object);
+    s->op = OP_PUT;
+  }
+
+  s->info.storage_class = s->info.env->get("HTTP_X_OBJECT_STORAGE_CLASS", "");
+
+  return RGWHandler_REST::init(store, s, cio);
+}
+
+RGWHandler_REST*
+RGWRESTMgr_SWIFT::get_handler(struct req_state* const s,
+                              const rgw::auth::StrategyRegistry& auth_registry,
+                              const std::string& frontend_prefix)
+{
+  int ret = RGWHandler_REST_SWIFT::init_from_header(s, frontend_prefix);
+  if (ret < 0) {
+    ldout(s->cct, 10) << "init_from_header returned err=" << ret <<  dendl;
+    return nullptr;
+  }
+
+  const auto& auth_strategy = auth_registry.get_swift();
+
+  if (s->init_state.url_bucket.empty()) {
+    return new RGWHandler_REST_Service_SWIFT(auth_strategy);
+  }
+
+  if (s->object.empty()) {
+    return new RGWHandler_REST_Bucket_SWIFT(auth_strategy);
+  }
+
+  return new RGWHandler_REST_Obj_SWIFT(auth_strategy);
+}
+
+RGWHandler_REST* RGWRESTMgr_SWIFT_Info::get_handler(
+  struct req_state* const s,
+  const rgw::auth::StrategyRegistry& auth_registry,
+  const std::string& frontend_prefix)
+{
+  s->prot_flags |= RGW_REST_SWIFT;
+  const auto& auth_strategy = auth_registry.get_swift();
+  return new RGWHandler_REST_SWIFT_Info(auth_strategy);
+}