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rgw_op.cc
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// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab ft=cpp
#include <errno.h>
#include <stdlib.h>
#include <system_error>
#include <unistd.h>
#include <sstream>
#include <string_view>
#include <boost/algorithm/string/predicate.hpp>
#include <boost/optional.hpp>
#include <boost/utility/in_place_factory.hpp>
#include "include/scope_guard.h"
#include "common/Clock.h"
#include "common/armor.h"
#include "common/errno.h"
#include "common/mime.h"
#include "common/utf8.h"
#include "common/ceph_json.h"
#include "common/static_ptr.h"
#include "rgw_tracer.h"
#include "rgw_rados.h"
#include "rgw_zone.h"
#include "rgw_op.h"
#include "rgw_rest.h"
#include "rgw_acl.h"
#include "rgw_acl_s3.h"
#include "rgw_acl_swift.h"
#include "rgw_user.h"
#include "rgw_bucket.h"
#include "rgw_log.h"
#include "rgw_multi.h"
#include "rgw_multi_del.h"
#include "rgw_cors.h"
#include "rgw_cors_s3.h"
#include "rgw_rest_conn.h"
#include "rgw_rest_s3.h"
#include "rgw_tar.h"
#include "rgw_client_io.h"
#include "rgw_compression.h"
#include "rgw_role.h"
#include "rgw_tag_s3.h"
#include "rgw_putobj_processor.h"
#include "rgw_crypt.h"
#include "rgw_perf_counters.h"
#include "rgw_process_env.h"
#include "rgw_notify.h"
#include "rgw_notify_event_type.h"
#include "rgw_sal.h"
#include "rgw_sal_rados.h"
#include "rgw_torrent.h"
#include "rgw_lua_data_filter.h"
#include "rgw_lua.h"
#include "services/svc_zone.h"
#include "services/svc_quota.h"
#include "services/svc_sys_obj.h"
#include "cls/lock/cls_lock_client.h"
#include "cls/rgw/cls_rgw_client.h"
#include "include/ceph_assert.h"
#include "compressor/Compressor.h"
#ifdef WITH_ARROW_FLIGHT
#include "rgw_flight.h"
#include "rgw_flight_frontend.h"
#endif
#ifdef WITH_LTTNG
#define TRACEPOINT_DEFINE
#define TRACEPOINT_PROBE_DYNAMIC_LINKAGE
#include "tracing/rgw_op.h"
#undef TRACEPOINT_PROBE_DYNAMIC_LINKAGE
#undef TRACEPOINT_DEFINE
#else
#define tracepoint(...)
#endif
#define dout_context g_ceph_context
#define dout_subsys ceph_subsys_rgw
using namespace std;
using namespace librados;
using ceph::crypto::MD5;
using boost::optional;
using boost::none;
using rgw::ARN;
using rgw::IAM::Effect;
using rgw::IAM::Policy;
static string mp_ns = RGW_OBJ_NS_MULTIPART;
static string shadow_ns = RGW_OBJ_NS_SHADOW;
static void forward_req_info(const DoutPrefixProvider *dpp, CephContext *cct, req_info& info, const std::string& bucket_name);
static MultipartMetaFilter mp_filter;
// this probably should belong in the rgw_iam_policy_keywords, I'll get it to it
// at some point
static constexpr auto S3_EXISTING_OBJTAG = "s3:ExistingObjectTag";
static constexpr auto S3_RESOURCE_TAG = "s3:ResourceTag";
static constexpr auto S3_RUNTIME_RESOURCE_VAL = "${s3:ResourceTag";
int RGWGetObj::parse_range(void)
{
int r = -ERANGE;
string rs(range_str);
string ofs_str;
string end_str;
ignore_invalid_range = s->cct->_conf->rgw_ignore_get_invalid_range;
partial_content = false;
size_t pos = rs.find("bytes=");
if (pos == string::npos) {
pos = 0;
while (isspace(rs[pos]))
pos++;
int end = pos;
while (isalpha(rs[end]))
end++;
if (strncasecmp(rs.c_str(), "bytes", end - pos) != 0)
return 0;
while (isspace(rs[end]))
end++;
if (rs[end] != '=')
return 0;
rs = rs.substr(end + 1);
} else {
rs = rs.substr(pos + 6); /* size of("bytes=") */
}
pos = rs.find('-');
if (pos == string::npos)
goto done;
partial_content = true;
ofs_str = rs.substr(0, pos);
end_str = rs.substr(pos + 1);
if (end_str.length()) {
end = atoll(end_str.c_str());
if (end < 0)
goto done;
}
if (ofs_str.length()) {
ofs = atoll(ofs_str.c_str());
} else { // RFC2616 suffix-byte-range-spec
ofs = -end;
end = -1;
}
if (end >= 0 && end < ofs)
goto done;
range_parsed = true;
return 0;
done:
if (ignore_invalid_range) {
partial_content = false;
ofs = 0;
end = -1;
range_parsed = false; // allow retry
r = 0;
}
return r;
}
static int decode_policy(const DoutPrefixProvider *dpp,
CephContext *cct,
bufferlist& bl,
RGWAccessControlPolicy *policy)
{
auto iter = bl.cbegin();
try {
policy->decode(iter);
} catch (buffer::error& err) {
ldpp_dout(dpp, 0) << "ERROR: could not decode policy, caught buffer::error" << dendl;
return -EIO;
}
if (cct->_conf->subsys.should_gather<ceph_subsys_rgw, 15>()) {
ldpp_dout(dpp, 15) << __func__ << " Read AccessControlPolicy";
RGWAccessControlPolicy_S3 *s3policy = static_cast<RGWAccessControlPolicy_S3 *>(policy);
s3policy->to_xml(*_dout);
*_dout << dendl;
}
return 0;
}
static int get_user_policy_from_attr(const DoutPrefixProvider *dpp,
CephContext * const cct,
map<string, bufferlist>& attrs,
RGWAccessControlPolicy& policy /* out */)
{
auto aiter = attrs.find(RGW_ATTR_ACL);
if (aiter != attrs.end()) {
int ret = decode_policy(dpp, cct, aiter->second, &policy);
if (ret < 0) {
return ret;
}
} else {
return -ENOENT;
}
return 0;
}
/**
* Get the AccessControlPolicy for an object off of disk.
* policy: must point to a valid RGWACL, and will be filled upon return.
* bucket: name of the bucket containing the object.
* object: name of the object to get the ACL for.
* Returns: 0 on success, -ERR# otherwise.
*/
int rgw_op_get_bucket_policy_from_attr(const DoutPrefixProvider *dpp,
CephContext *cct,
rgw::sal::Driver* driver,
RGWBucketInfo& bucket_info,
map<string, bufferlist>& bucket_attrs,
RGWAccessControlPolicy *policy,
optional_yield y)
{
map<string, bufferlist>::iterator aiter = bucket_attrs.find(RGW_ATTR_ACL);
if (aiter != bucket_attrs.end()) {
int ret = decode_policy(dpp, cct, aiter->second, policy);
if (ret < 0)
return ret;
} else {
ldpp_dout(dpp, 0) << "WARNING: couldn't find acl header for bucket, generating default" << dendl;
std::unique_ptr<rgw::sal::User> user = driver->get_user(bucket_info.owner);
/* object exists, but policy is broken */
int r = user->load_user(dpp, y);
if (r < 0)
return r;
policy->create_default(bucket_info.owner, user->get_display_name());
}
return 0;
}
static int get_obj_policy_from_attr(const DoutPrefixProvider *dpp,
CephContext *cct,
rgw::sal::Driver* driver,
RGWBucketInfo& bucket_info,
map<string, bufferlist>& bucket_attrs,
RGWAccessControlPolicy *policy,
string *storage_class,
rgw::sal::Object* obj,
optional_yield y)
{
bufferlist bl;
int ret = 0;
std::unique_ptr<rgw::sal::Object::ReadOp> rop = obj->get_read_op();
ret = rop->get_attr(dpp, RGW_ATTR_ACL, bl, y);
if (ret >= 0) {
ret = decode_policy(dpp, cct, bl, policy);
if (ret < 0)
return ret;
} else if (ret == -ENODATA) {
/* object exists, but policy is broken */
ldpp_dout(dpp, 0) << "WARNING: couldn't find acl header for object, generating default" << dendl;
std::unique_ptr<rgw::sal::User> user = driver->get_user(bucket_info.owner);
ret = user->load_user(dpp, y);
if (ret < 0)
return ret;
policy->create_default(bucket_info.owner, user->get_display_name());
}
if (storage_class) {
bufferlist scbl;
int r = rop->get_attr(dpp, RGW_ATTR_STORAGE_CLASS, scbl, y);
if (r >= 0) {
*storage_class = scbl.to_str();
} else {
storage_class->clear();
}
}
return ret;
}
static boost::optional<Policy> get_iam_policy_from_attr(CephContext* cct,
map<string, bufferlist>& attrs,
const string& tenant) {
auto i = attrs.find(RGW_ATTR_IAM_POLICY);
if (i != attrs.end()) {
return Policy(cct, tenant, i->second, false);
} else {
return none;
}
}
static boost::optional<PublicAccessBlockConfiguration>
get_public_access_conf_from_attr(const map<string, bufferlist>& attrs)
{
if (auto aiter = attrs.find(RGW_ATTR_PUBLIC_ACCESS);
aiter != attrs.end()) {
bufferlist::const_iterator iter{&aiter->second};
PublicAccessBlockConfiguration access_conf;
try {
access_conf.decode(iter);
} catch (const buffer::error& e) {
return boost::none;
}
return access_conf;
}
return boost::none;
}
vector<Policy> get_iam_user_policy_from_attr(CephContext* cct,
map<string, bufferlist>& attrs,
const string& tenant) {
vector<Policy> policies;
if (auto it = attrs.find(RGW_ATTR_USER_POLICY); it != attrs.end()) {
bufferlist out_bl = attrs[RGW_ATTR_USER_POLICY];
map<string, string> policy_map;
decode(policy_map, out_bl);
for (auto& it : policy_map) {
bufferlist bl = bufferlist::static_from_string(it.second);
Policy p(cct, tenant, bl, false);
policies.push_back(std::move(p));
}
}
return policies;
}
static int read_bucket_policy(const DoutPrefixProvider *dpp,
rgw::sal::Driver* driver,
req_state *s,
RGWBucketInfo& bucket_info,
map<string, bufferlist>& bucket_attrs,
RGWAccessControlPolicy *policy,
rgw_bucket& bucket,
optional_yield y)
{
if (!s->system_request && bucket_info.flags & BUCKET_SUSPENDED) {
ldpp_dout(dpp, 0) << "NOTICE: bucket " << bucket_info.bucket.name
<< " is suspended" << dendl;
return -ERR_USER_SUSPENDED;
}
if (bucket.name.empty()) {
return 0;
}
int ret = rgw_op_get_bucket_policy_from_attr(dpp, s->cct, driver, bucket_info, bucket_attrs, policy, y);
if (ret == -ENOENT) {
ret = -ERR_NO_SUCH_BUCKET;
}
return ret;
}
static int read_obj_policy(const DoutPrefixProvider *dpp,
rgw::sal::Driver* driver,
req_state *s,
RGWBucketInfo& bucket_info,
map<string, bufferlist>& bucket_attrs,
RGWAccessControlPolicy* acl,
string *storage_class,
boost::optional<Policy>& policy,
rgw::sal::Bucket* bucket,
rgw::sal::Object* object,
optional_yield y,
bool copy_src=false)
{
string upload_id;
upload_id = s->info.args.get("uploadId");
std::unique_ptr<rgw::sal::Object> mpobj;
rgw_obj obj;
if (!s->system_request && bucket_info.flags & BUCKET_SUSPENDED) {
ldpp_dout(dpp, 0) << "NOTICE: bucket " << bucket_info.bucket.name
<< " is suspended" << dendl;
return -ERR_USER_SUSPENDED;
}
// when getting policy info for copy-source obj, upload_id makes no sense.
// 'copy_src' is used to make this function backward compatible.
if (!upload_id.empty() && !copy_src) {
/* multipart upload */
std::unique_ptr<rgw::sal::MultipartUpload> upload;
upload = bucket->get_multipart_upload(object->get_name(), upload_id);
mpobj = upload->get_meta_obj();
mpobj->set_in_extra_data(true);
object = mpobj.get();
}
policy = get_iam_policy_from_attr(s->cct, bucket_attrs, bucket->get_tenant());
int ret = get_obj_policy_from_attr(dpp, s->cct, driver, bucket_info,
bucket_attrs, acl, storage_class, object,
s->yield);
if (ret == -ENOENT) {
/* object does not exist checking the bucket's ACL to make sure
that we send a proper error code */
RGWAccessControlPolicy bucket_policy(s->cct);
ret = rgw_op_get_bucket_policy_from_attr(dpp, s->cct, driver, bucket_info, bucket_attrs, &bucket_policy, y);
if (ret < 0) {
return ret;
}
const rgw_user& bucket_owner = bucket_policy.get_owner().get_id();
if (bucket_owner.compare(s->user->get_id()) != 0 &&
! s->auth.identity->is_admin_of(bucket_owner)) {
auto r = eval_identity_or_session_policies(dpp, s->iam_user_policies, s->env,
rgw::IAM::s3ListBucket, ARN(bucket->get_key()));
if (r == Effect::Allow)
return -ENOENT;
if (r == Effect::Deny)
return -EACCES;
if (policy) {
ARN b_arn(bucket->get_key());
r = policy->eval(s->env, *s->auth.identity, rgw::IAM::s3ListBucket, b_arn);
if (r == Effect::Allow)
return -ENOENT;
if (r == Effect::Deny)
return -EACCES;
}
if (! s->session_policies.empty()) {
r = eval_identity_or_session_policies(dpp, s->session_policies, s->env,
rgw::IAM::s3ListBucket, ARN(bucket->get_key()));
if (r == Effect::Allow)
return -ENOENT;
if (r == Effect::Deny)
return -EACCES;
}
if (! bucket_policy.verify_permission(s, *s->auth.identity, s->perm_mask, RGW_PERM_READ))
ret = -EACCES;
else
ret = -ENOENT;
} else {
ret = -ENOENT;
}
}
return ret;
}
/**
* Get the AccessControlPolicy for an user, bucket or object off of disk.
* s: The req_state to draw information from.
* only_bucket: If true, reads the user and bucket ACLs rather than the object ACL.
* Returns: 0 on success, -ERR# otherwise.
*/
int rgw_build_bucket_policies(const DoutPrefixProvider *dpp, rgw::sal::Driver* driver, req_state* s, optional_yield y)
{
int ret = 0;
string bi = s->info.args.get(RGW_SYS_PARAM_PREFIX "bucket-instance");
if (!bi.empty()) {
// note: overwrites s->bucket_name, may include a tenant/
ret = rgw_bucket_parse_bucket_instance(bi, &s->bucket_name, &s->bucket_instance_id, &s->bucket_instance_shard_id);
if (ret < 0) {
return ret;
}
}
if(s->dialect.compare("s3") == 0) {
s->bucket_acl = std::make_unique<RGWAccessControlPolicy_S3>(s->cct);
} else if(s->dialect.compare("swift") == 0) {
/* We aren't allocating the account policy for those operations using
* the Swift's infrastructure that don't really need req_state::user.
* Typical example here is the implementation of /info. */
if (!s->user->get_id().empty()) {
s->user_acl = std::make_unique<RGWAccessControlPolicy_SWIFTAcct>(s->cct);
}
s->bucket_acl = std::make_unique<RGWAccessControlPolicy_SWIFT>(s->cct);
} else {
s->bucket_acl = std::make_unique<RGWAccessControlPolicy>(s->cct);
}
/* check if copy source is within the current domain */
if (!s->src_bucket_name.empty()) {
std::unique_ptr<rgw::sal::Bucket> src_bucket;
ret = driver->get_bucket(dpp, nullptr,
rgw_bucket_key(s->src_tenant_name,
s->src_bucket_name),
&src_bucket, y);
if (ret == 0) {
string& zonegroup = src_bucket->get_info().zonegroup;
s->local_source = driver->get_zone()->get_zonegroup().equals(zonegroup);
}
}
struct {
rgw_user uid;
std::string display_name;
} acct_acl_user = {
s->user->get_id(),
s->user->get_display_name(),
};
if (!s->bucket_name.empty()) {
s->bucket_exists = true;
/* This is the only place that s->bucket is created. It should never be
* overwritten. */
ret = driver->get_bucket(dpp, s->user.get(), rgw_bucket(s->bucket_tenant, s->bucket_name, s->bucket_instance_id), &s->bucket, y);
if (ret < 0) {
if (ret != -ENOENT) {
string bucket_log;
bucket_log = rgw_make_bucket_entry_name(s->bucket_tenant, s->bucket_name);
ldpp_dout(dpp, 0) << "NOTICE: couldn't get bucket from bucket_name (name="
<< bucket_log << ")" << dendl;
return ret;
}
s->bucket_exists = false;
return -ERR_NO_SUCH_BUCKET;
}
if (!rgw::sal::Object::empty(s->object.get())) {
s->object->set_bucket(s->bucket.get());
}
s->bucket_mtime = s->bucket->get_modification_time();
s->bucket_attrs = s->bucket->get_attrs();
ret = read_bucket_policy(dpp, driver, s, s->bucket->get_info(),
s->bucket->get_attrs(),
s->bucket_acl.get(), s->bucket->get_key(), y);
acct_acl_user = {
s->bucket->get_info().owner,
s->bucket_acl->get_owner().get_display_name(),
};
s->bucket_owner = s->bucket_acl->get_owner();
std::unique_ptr<rgw::sal::ZoneGroup> zonegroup;
int r = driver->get_zonegroup(s->bucket->get_info().zonegroup, &zonegroup);
if (!r) {
s->zonegroup_endpoint = zonegroup->get_endpoint();
s->zonegroup_name = zonegroup->get_name();
}
if (r < 0 && ret == 0) {
ret = r;
}
if (!driver->get_zone()->get_zonegroup().equals(s->bucket->get_info().zonegroup)) {
ldpp_dout(dpp, 0) << "NOTICE: request for data in a different zonegroup ("
<< s->bucket->get_info().zonegroup << " != "
<< driver->get_zone()->get_zonegroup().get_id() << ")" << dendl;
/* we now need to make sure that the operation actually requires copy source, that is
* it's a copy operation
*/
if (driver->get_zone()->get_zonegroup().is_master_zonegroup() && s->system_request) {
/*If this is the master, don't redirect*/
} else if (s->op_type == RGW_OP_GET_BUCKET_LOCATION ) {
/* If op is get bucket location, don't redirect */
} else if (!s->local_source ||
(s->op != OP_PUT && s->op != OP_COPY) ||
rgw::sal::Object::empty(s->object.get())) {
return -ERR_PERMANENT_REDIRECT;
}
}
/* init dest placement */
s->dest_placement.storage_class = s->info.storage_class;
s->dest_placement.inherit_from(s->bucket->get_placement_rule());
if (!driver->valid_placement(s->dest_placement)) {
ldpp_dout(dpp, 0) << "NOTICE: invalid dest placement: " << s->dest_placement.to_str() << dendl;
return -EINVAL;
}
s->bucket_access_conf = get_public_access_conf_from_attr(s->bucket->get_attrs());
}
/* handle user ACL only for those APIs which support it */
if (s->user_acl) {
std::unique_ptr<rgw::sal::User> acl_user = driver->get_user(acct_acl_user.uid);
ret = acl_user->read_attrs(dpp, y);
if (!ret) {
ret = get_user_policy_from_attr(dpp, s->cct, acl_user->get_attrs(), *s->user_acl);
}
if (-ENOENT == ret) {
/* In already existing clusters users won't have ACL. In such case
* assuming that only account owner has the rights seems to be
* reasonable. That allows to have only one verification logic.
* NOTE: there is small compatibility kludge for global, empty tenant:
* 1. if we try to reach an existing bucket, its owner is considered
* as account owner.
* 2. otherwise account owner is identity stored in s->user->user_id. */
s->user_acl->create_default(acct_acl_user.uid,
acct_acl_user.display_name);
ret = 0;
} else if (ret < 0) {
ldpp_dout(dpp, 0) << "NOTICE: couldn't get user attrs for handling ACL "
"(user_id=" << s->user->get_id() << ", ret=" << ret << ")" << dendl;
return ret;
}
}
// We don't need user policies in case of STS token returned by AssumeRole,
// hence the check for user type
if (! s->user->get_id().empty() && s->auth.identity->get_identity_type() != TYPE_ROLE) {
try {
ret = s->user->read_attrs(dpp, y);
if (ret == 0) {
auto user_policies = get_iam_user_policy_from_attr(s->cct,
s->user->get_attrs(),
s->user->get_tenant());
s->iam_user_policies.insert(s->iam_user_policies.end(),
std::make_move_iterator(user_policies.begin()),
std::make_move_iterator(user_policies.end()));
} else {
if (ret == -ENOENT)
ret = 0;
else ret = -EACCES;
}
} catch (const std::exception& e) {
ldpp_dout(dpp, -1) << "Error reading IAM User Policy: " << e.what() << dendl;
ret = -EACCES;
}
}
try {
s->iam_policy = get_iam_policy_from_attr(s->cct, s->bucket_attrs, s->bucket_tenant);
} catch (const std::exception& e) {
// Really this is a can't happen condition. We parse the policy
// when it's given to us, so perhaps we should abort or otherwise
// raise bloody murder.
ldpp_dout(dpp, 0) << "Error reading IAM Policy: " << e.what() << dendl;
ret = -EACCES;
}
bool success = driver->get_zone()->get_redirect_endpoint(&s->redirect_zone_endpoint);
if (success) {
ldpp_dout(dpp, 20) << "redirect_zone_endpoint=" << s->redirect_zone_endpoint << dendl;
}
return ret;
}
/**
* Get the AccessControlPolicy for a bucket or object off of disk.
* s: The req_state to draw information from.
* only_bucket: If true, reads the bucket ACL rather than the object ACL.
* Returns: 0 on success, -ERR# otherwise.
*/
int rgw_build_object_policies(const DoutPrefixProvider *dpp, rgw::sal::Driver* driver,
req_state *s, bool prefetch_data, optional_yield y)
{
int ret = 0;
if (!rgw::sal::Object::empty(s->object.get())) {
if (!s->bucket_exists) {
return -ERR_NO_SUCH_BUCKET;
}
s->object_acl = std::make_unique<RGWAccessControlPolicy>(s->cct);
s->object->set_atomic();
if (prefetch_data) {
s->object->set_prefetch_data();
}
ret = read_obj_policy(dpp, driver, s, s->bucket->get_info(), s->bucket_attrs,
s->object_acl.get(), nullptr, s->iam_policy, s->bucket.get(),
s->object.get(), y);
}
return ret;
}
static int rgw_iam_remove_objtags(const DoutPrefixProvider *dpp, req_state* s, rgw::sal::Object* object, bool has_existing_obj_tag, bool has_resource_tag) {
object->set_atomic();
int op_ret = object->get_obj_attrs(s->yield, dpp);
if (op_ret < 0)
return op_ret;
rgw::sal::Attrs attrs = object->get_attrs();
auto tags = attrs.find(RGW_ATTR_TAGS);
if (tags != attrs.end()) {
RGWObjTags tagset;
try {
auto bliter = tags->second.cbegin();
tagset.decode(bliter);
} catch (buffer::error& err) {
ldpp_dout(s, 0) << "ERROR: caught buffer::error, couldn't decode TagSet" << dendl;
return -EIO;
}
for (auto& tag: tagset.get_tags()) {
if (has_existing_obj_tag) {
vector<std::unordered_multimap<string, string>::iterator> iters;
string key = "s3:ExistingObjectTag/" + tag.first;
auto result = s->env.equal_range(key);
for (auto& it = result.first; it != result.second; ++it)
{
if (tag.second == it->second) {
iters.emplace_back(it);
}
}
for (auto& it : iters) {
s->env.erase(it);
}
}//end if has_existing_obj_tag
if (has_resource_tag) {
vector<std::unordered_multimap<string, string>::iterator> iters;
string key = "s3:ResourceTag/" + tag.first;
auto result = s->env.equal_range(key);
for (auto& it = result.first; it != result.second; ++it)
{
if (tag.second == it->second) {
iters.emplace_back(it);
}
}
for (auto& it : iters) {
s->env.erase(it);
}
}//end if has_resource_tag
}
}
return 0;
}
void rgw_add_to_iam_environment(rgw::IAM::Environment& e, std::string_view key, std::string_view val){
// This variant just adds non empty key pairs to IAM env., values can be empty
// in certain cases like tagging
if (!key.empty())
e.emplace(key,val);
}
static int rgw_iam_add_tags_from_bl(req_state* s, bufferlist& bl, bool has_existing_obj_tag=false, bool has_resource_tag=false){
RGWObjTags& tagset = s->tagset;
try {
auto bliter = bl.cbegin();
tagset.decode(bliter);
} catch (buffer::error& err) {
ldpp_dout(s, 0) << "ERROR: caught buffer::error, couldn't decode TagSet" << dendl;
return -EIO;
}
for (const auto& tag: tagset.get_tags()){
if (has_existing_obj_tag)
rgw_add_to_iam_environment(s->env, "s3:ExistingObjectTag/" + tag.first, tag.second);
if (has_resource_tag)
rgw_add_to_iam_environment(s->env, "s3:ResourceTag/" + tag.first, tag.second);
}
return 0;
}
static int rgw_iam_add_objtags(const DoutPrefixProvider *dpp, req_state* s, rgw::sal::Object* object, bool has_existing_obj_tag, bool has_resource_tag) {
object->set_atomic();
int op_ret = object->get_obj_attrs(s->yield, dpp);
if (op_ret < 0)
return op_ret;
rgw::sal::Attrs attrs = object->get_attrs();
auto tags = attrs.find(RGW_ATTR_TAGS);
if (tags != attrs.end()){
return rgw_iam_add_tags_from_bl(s, tags->second, has_existing_obj_tag, has_resource_tag);
}
return 0;
}
static int rgw_iam_add_objtags(const DoutPrefixProvider *dpp, req_state* s, bool has_existing_obj_tag, bool has_resource_tag) {
if (!rgw::sal::Object::empty(s->object.get())) {
return rgw_iam_add_objtags(dpp, s, s->object.get(), has_existing_obj_tag, has_resource_tag);
}
return 0;
}
static int rgw_iam_add_buckettags(const DoutPrefixProvider *dpp, req_state* s, rgw::sal::Bucket* bucket) {
rgw::sal::Attrs attrs = bucket->get_attrs();
auto tags = attrs.find(RGW_ATTR_TAGS);
if (tags != attrs.end()) {
return rgw_iam_add_tags_from_bl(s, tags->second, false, true);
}
return 0;
}
static int rgw_iam_add_buckettags(const DoutPrefixProvider *dpp, req_state* s) {
return rgw_iam_add_buckettags(dpp, s, s->bucket.get());
}
static void rgw_iam_add_crypt_attrs(rgw::IAM::Environment& e,
const meta_map_t& attrs)
{
constexpr auto encrypt_attr = "x-amz-server-side-encryption";
constexpr auto s3_encrypt_attr = "s3:x-amz-server-side-encryption";
if (auto h = attrs.find(encrypt_attr); h != attrs.end()) {
rgw_add_to_iam_environment(e, s3_encrypt_attr, h->second);
}
constexpr auto kms_attr = "x-amz-server-side-encryption-aws-kms-key-id";
constexpr auto s3_kms_attr = "s3:x-amz-server-side-encryption-aws-kms-key-id";
if (auto h = attrs.find(kms_attr); h != attrs.end()) {
rgw_add_to_iam_environment(e, s3_kms_attr, h->second);
}
}
static std::tuple<bool, bool> rgw_check_policy_condition(const DoutPrefixProvider *dpp,
boost::optional<rgw::IAM::Policy> iam_policy,
boost::optional<vector<rgw::IAM::Policy>> identity_policies,
boost::optional<vector<rgw::IAM::Policy>> session_policies,
bool check_obj_exist_tag=true) {
bool has_existing_obj_tag = false, has_resource_tag = false;
bool iam_policy_s3_exist_tag = false, iam_policy_s3_resource_tag = false;
if (iam_policy) {
if (check_obj_exist_tag) {
iam_policy_s3_exist_tag = iam_policy->has_partial_conditional(S3_EXISTING_OBJTAG);
}
iam_policy_s3_resource_tag = iam_policy->has_partial_conditional(S3_RESOURCE_TAG) || iam_policy->has_partial_conditional_value(S3_RUNTIME_RESOURCE_VAL);
}
bool identity_policy_s3_exist_tag = false, identity_policy_s3_resource_tag = false;
if (identity_policies) {
for (auto& identity_policy : identity_policies.get()) {
if (check_obj_exist_tag) {
if (identity_policy.has_partial_conditional(S3_EXISTING_OBJTAG))
identity_policy_s3_exist_tag = true;
}
if (identity_policy.has_partial_conditional(S3_RESOURCE_TAG) || identity_policy.has_partial_conditional_value(S3_RUNTIME_RESOURCE_VAL))
identity_policy_s3_resource_tag = true;
if (identity_policy_s3_exist_tag && identity_policy_s3_resource_tag) // check all policies till both are set to true
break;
}
}
bool session_policy_s3_exist_tag = false, session_policy_s3_resource_flag = false;
if (session_policies) {
for (auto& session_policy : session_policies.get()) {
if (check_obj_exist_tag) {
if (session_policy.has_partial_conditional(S3_EXISTING_OBJTAG))
session_policy_s3_exist_tag = true;
}
if (session_policy.has_partial_conditional(S3_RESOURCE_TAG) || session_policy.has_partial_conditional_value(S3_RUNTIME_RESOURCE_VAL))
session_policy_s3_resource_flag = true;
if (session_policy_s3_exist_tag && session_policy_s3_resource_flag)
break;
}
}
has_existing_obj_tag = iam_policy_s3_exist_tag || identity_policy_s3_exist_tag || session_policy_s3_exist_tag;
has_resource_tag = iam_policy_s3_resource_tag || identity_policy_s3_resource_tag || session_policy_s3_resource_flag;
return make_tuple(has_existing_obj_tag, has_resource_tag);
}
static std::tuple<bool, bool> rgw_check_policy_condition(const DoutPrefixProvider *dpp, req_state* s, bool check_obj_exist_tag=true) {
return rgw_check_policy_condition(dpp, s->iam_policy, s->iam_user_policies, s->session_policies, check_obj_exist_tag);
}
static void rgw_add_grant_to_iam_environment(rgw::IAM::Environment& e, req_state *s){
using header_pair_t = std::pair <const char*, const char*>;
static const std::initializer_list <header_pair_t> acl_header_conditionals {
{"HTTP_X_AMZ_GRANT_READ", "s3:x-amz-grant-read"},
{"HTTP_X_AMZ_GRANT_WRITE", "s3:x-amz-grant-write"},
{"HTTP_X_AMZ_GRANT_READ_ACP", "s3:x-amz-grant-read-acp"},
{"HTTP_X_AMZ_GRANT_WRITE_ACP", "s3:x-amz-grant-write-acp"},
{"HTTP_X_AMZ_GRANT_FULL_CONTROL", "s3:x-amz-grant-full-control"}
};
if (s->has_acl_header){
for (const auto& c: acl_header_conditionals){
auto hdr = s->info.env->get(c.first);
if(hdr) {
e.emplace(c.second, hdr);
}
}
}
}
void rgw_build_iam_environment(rgw::sal::Driver* driver,
req_state* s)
{
const auto& m = s->info.env->get_map();
auto t = ceph::real_clock::now();
s->env.emplace("aws:CurrentTime", std::to_string(ceph::real_clock::to_time_t(t)));
s->env.emplace("aws:EpochTime", ceph::to_iso_8601(t));
// TODO: This is fine for now, but once we have STS we'll need to
// look and see. Also this won't work with the IdentityApplier
// model, since we need to know the actual credential.
s->env.emplace("aws:PrincipalType", "User");
auto i = m.find("HTTP_REFERER");
if (i != m.end()) {
s->env.emplace("aws:Referer", i->second);
}
if (rgw_transport_is_secure(s->cct, *s->info.env)) {
s->env.emplace("aws:SecureTransport", "true");
}
const auto remote_addr_param = s->cct->_conf->rgw_remote_addr_param;
if (remote_addr_param.length()) {
i = m.find(remote_addr_param);
} else {
i = m.find("REMOTE_ADDR");
}
if (i != m.end()) {
const string* ip = &(i->second);
string temp;
if (remote_addr_param == "HTTP_X_FORWARDED_FOR") {
const auto comma = ip->find(',');
if (comma != string::npos) {
temp.assign(*ip, 0, comma);
ip = &temp;
}
}
s->env.emplace("aws:SourceIp", *ip);
}
i = m.find("HTTP_USER_AGENT"); {
if (i != m.end())
s->env.emplace("aws:UserAgent", i->second);
}
if (s->user) {
// What to do about aws::userid? One can have multiple access
// keys so that isn't really suitable. Do we have a durable
// identifier that can persist through name changes?
s->env.emplace("aws:username", s->user->get_id().id);
}
i = m.find("HTTP_X_AMZ_SECURITY_TOKEN");
if (i != m.end()) {
s->env.emplace("sts:authentication", "true");
} else {
s->env.emplace("sts:authentication", "false");
}
}
/*
* GET on CloudTiered objects is processed only when sent from the sync client.
* In all other cases, fail with `ERR_INVALID_OBJECT_STATE`.
*/
int handle_cloudtier_obj(rgw::sal::Attrs& attrs, bool sync_cloudtiered) {
int op_ret = 0;
auto attr_iter = attrs.find(RGW_ATTR_MANIFEST);
if (attr_iter != attrs.end()) {
RGWObjManifest m;
try {
decode(m, attr_iter->second);
if (m.get_tier_type() == "cloud-s3") {
if (!sync_cloudtiered) {
/* XXX: Instead send presigned redirect or read-through */
op_ret = -ERR_INVALID_OBJECT_STATE;
} else { // fetch object for sync and set cloud_tier attrs
bufferlist t, t_tier;
RGWObjTier tier_config;
m.get_tier_config(&tier_config);
t.append("cloud-s3");
attrs[RGW_ATTR_CLOUD_TIER_TYPE] = t;
encode(tier_config, t_tier);
attrs[RGW_ATTR_CLOUD_TIER_CONFIG] = t_tier;
}
}
} catch (const buffer::end_of_buffer&) {
// ignore empty manifest; it's not cloud-tiered
} catch (const std::exception& e) {
}
}
return op_ret;
}
void rgw_bucket_object_pre_exec(req_state *s)
{
if (s->expect_cont)
dump_continue(s);
dump_bucket_from_state(s);
}
// So! Now and then when we try to update bucket information, the
// bucket has changed during the course of the operation. (Or we have
// a cache consistency problem that Watch/Notify isn't ruling out
// completely.)
//
// When this happens, we need to update the bucket info and try
// again. We have, however, to try the right *part* again. We can't
// simply re-send, since that will obliterate the previous update.
//
// Thus, callers of this function should include everything that
// merges information to be changed into the bucket information as
// well as the call to set it.
//
// The called function must return an integer, negative on error. In
// general, they should just return op_ret.
namespace {
template<typename F>
int retry_raced_bucket_write(const DoutPrefixProvider *dpp, rgw::sal::Bucket* b, const F& f, optional_yield y) {
auto r = f();
for (auto i = 0u; i < 15u && r == -ECANCELED; ++i) {
r = b->try_refresh_info(dpp, nullptr, y);
if (r >= 0) {
r = f();
}
}