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-rw-r--r--src/rgw/rgw_common.cc1921
1 files changed, 1921 insertions, 0 deletions
diff --git a/src/rgw/rgw_common.cc b/src/rgw/rgw_common.cc
new file mode 100644
index 00000000..567b80ca
--- /dev/null
+++ b/src/rgw/rgw_common.cc
@@ -0,0 +1,1921 @@
+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+
+#include <errno.h>
+#include <vector>
+#include <algorithm>
+#include <string>
+#include <boost/tokenizer.hpp>
+
+#include "json_spirit/json_spirit.h"
+#include "common/ceph_json.h"
+
+#include "rgw_op.h"
+#include "rgw_common.h"
+#include "rgw_acl.h"
+#include "rgw_string.h"
+#include "rgw_rados.h"
+#include "rgw_http_errors.h"
+#include "rgw_arn.h"
+
+#include "common/ceph_crypto.h"
+#include "common/armor.h"
+#include "common/errno.h"
+#include "common/Clock.h"
+#include "common/Formatter.h"
+#include "common/convenience.h"
+#include "common/strtol.h"
+#include "include/str_list.h"
+#include "rgw_crypt_sanitize.h"
+
+#include <sstream>
+
+#define dout_context g_ceph_context
+#define dout_subsys ceph_subsys_rgw
+
+using rgw::ARN;
+using rgw::IAM::Effect;
+using rgw::IAM::op_to_perm;
+using rgw::IAM::Policy;
+
+const uint32_t RGWBucketInfo::NUM_SHARDS_BLIND_BUCKET(UINT32_MAX);
+
+rgw_http_errors rgw_http_s3_errors({
+ { 0, {200, "" }},
+ { STATUS_CREATED, {201, "Created" }},
+ { STATUS_ACCEPTED, {202, "Accepted" }},
+ { STATUS_NO_CONTENT, {204, "NoContent" }},
+ { STATUS_PARTIAL_CONTENT, {206, "" }},
+ { ERR_PERMANENT_REDIRECT, {301, "PermanentRedirect" }},
+ { ERR_WEBSITE_REDIRECT, {301, "WebsiteRedirect" }},
+ { STATUS_REDIRECT, {303, "" }},
+ { ERR_NOT_MODIFIED, {304, "NotModified" }},
+ { EINVAL, {400, "InvalidArgument" }},
+ { ERR_INVALID_REQUEST, {400, "InvalidRequest" }},
+ { ERR_INVALID_DIGEST, {400, "InvalidDigest" }},
+ { ERR_BAD_DIGEST, {400, "BadDigest" }},
+ { ERR_INVALID_LOCATION_CONSTRAINT, {400, "InvalidLocationConstraint" }},
+ { ERR_ZONEGROUP_DEFAULT_PLACEMENT_MISCONFIGURATION, {400, "ZonegroupDefaultPlacementMisconfiguration" }},
+ { ERR_INVALID_BUCKET_NAME, {400, "InvalidBucketName" }},
+ { ERR_INVALID_OBJECT_NAME, {400, "InvalidObjectName" }},
+ { ERR_UNRESOLVABLE_EMAIL, {400, "UnresolvableGrantByEmailAddress" }},
+ { ERR_INVALID_PART, {400, "InvalidPart" }},
+ { ERR_INVALID_PART_ORDER, {400, "InvalidPartOrder" }},
+ { ERR_REQUEST_TIMEOUT, {400, "RequestTimeout" }},
+ { ERR_TOO_LARGE, {400, "EntityTooLarge" }},
+ { ERR_TOO_SMALL, {400, "EntityTooSmall" }},
+ { ERR_TOO_MANY_BUCKETS, {400, "TooManyBuckets" }},
+ { ERR_MALFORMED_XML, {400, "MalformedXML" }},
+ { ERR_AMZ_CONTENT_SHA256_MISMATCH, {400, "XAmzContentSHA256Mismatch" }},
+ { ERR_MALFORMED_DOC, {400, "MalformedPolicyDocument"}},
+ { ERR_INVALID_TAG, {400, "InvalidTag"}},
+ { ERR_MALFORMED_ACL_ERROR, {400, "MalformedACLError" }},
+ { ERR_INVALID_CORS_RULES_ERROR, {400, "InvalidRequest" }},
+ { ERR_INVALID_WEBSITE_ROUTING_RULES_ERROR, {400, "InvalidRequest" }},
+ { ERR_INVALID_ENCRYPTION_ALGORITHM, {400, "InvalidEncryptionAlgorithmError" }},
+ { ERR_INVALID_RETENTION_PERIOD,{400, "InvalidRetentionPeriod"}},
+ { ERR_LENGTH_REQUIRED, {411, "MissingContentLength" }},
+ { EACCES, {403, "AccessDenied" }},
+ { EPERM, {403, "AccessDenied" }},
+ { ERR_SIGNATURE_NO_MATCH, {403, "SignatureDoesNotMatch" }},
+ { ERR_INVALID_ACCESS_KEY, {403, "InvalidAccessKeyId" }},
+ { ERR_USER_SUSPENDED, {403, "UserSuspended" }},
+ { ERR_REQUEST_TIME_SKEWED, {403, "RequestTimeTooSkewed" }},
+ { ERR_QUOTA_EXCEEDED, {403, "QuotaExceeded" }},
+ { ERR_MFA_REQUIRED, {403, "AccessDenied" }},
+ { ENOENT, {404, "NoSuchKey" }},
+ { ERR_NO_SUCH_BUCKET, {404, "NoSuchBucket" }},
+ { ERR_NO_SUCH_WEBSITE_CONFIGURATION, {404, "NoSuchWebsiteConfiguration" }},
+ { ERR_NO_SUCH_UPLOAD, {404, "NoSuchUpload" }},
+ { ERR_NOT_FOUND, {404, "Not Found"}},
+ { ERR_NO_SUCH_LC, {404, "NoSuchLifecycleConfiguration"}},
+ { ERR_NO_SUCH_BUCKET_POLICY, {404, "NoSuchBucketPolicy"}},
+ { ERR_NO_SUCH_USER, {404, "NoSuchUser"}},
+ { ERR_NO_ROLE_FOUND, {404, "NoSuchEntity"}},
+ { ERR_NO_CORS_FOUND, {404, "NoSuchCORSConfiguration"}},
+ { ERR_NO_SUCH_SUBUSER, {404, "NoSuchSubUser"}},
+ { ERR_NO_SUCH_ENTITY, {404, "NoSuchEntity"}},
+ { ERR_NO_SUCH_CORS_CONFIGURATION, {404, "NoSuchCORSConfiguration"}},
+ { ERR_NO_SUCH_OBJECT_LOCK_CONFIGURATION, {404, "ObjectLockConfigurationNotFoundError"}},
+ { ERR_METHOD_NOT_ALLOWED, {405, "MethodNotAllowed" }},
+ { ETIMEDOUT, {408, "RequestTimeout" }},
+ { EEXIST, {409, "BucketAlreadyExists" }},
+ { ERR_USER_EXIST, {409, "UserAlreadyExists" }},
+ { ERR_EMAIL_EXIST, {409, "EmailExists" }},
+ { ERR_KEY_EXIST, {409, "KeyExists"}},
+ { ERR_TAG_CONFLICT, {409, "OperationAborted"}},
+ { ERR_POSITION_NOT_EQUAL_TO_LENGTH, {409, "PositionNotEqualToLength"}},
+ { ERR_OBJECT_NOT_APPENDABLE, {409, "ObjectNotAppendable"}},
+ { ERR_INVALID_BUCKET_STATE, {409, "InvalidBucketState"}},
+ { ERR_INVALID_SECRET_KEY, {400, "InvalidSecretKey"}},
+ { ERR_INVALID_KEY_TYPE, {400, "InvalidKeyType"}},
+ { ERR_INVALID_CAP, {400, "InvalidCapability"}},
+ { ERR_INVALID_TENANT_NAME, {400, "InvalidTenantName" }},
+ { ENOTEMPTY, {409, "BucketNotEmpty" }},
+ { ERR_PRECONDITION_FAILED, {412, "PreconditionFailed" }},
+ { ERANGE, {416, "InvalidRange" }},
+ { ERR_UNPROCESSABLE_ENTITY, {422, "UnprocessableEntity" }},
+ { ERR_LOCKED, {423, "Locked" }},
+ { ERR_INTERNAL_ERROR, {500, "InternalError" }},
+ { ERR_NOT_IMPLEMENTED, {501, "NotImplemented" }},
+ { ERR_SERVICE_UNAVAILABLE, {503, "ServiceUnavailable"}},
+ { ERR_RATE_LIMITED, {503, "SlowDown"}},
+ { ERR_ZERO_IN_URL, {400, "InvalidRequest" }},
+});
+
+rgw_http_errors rgw_http_swift_errors({
+ { EACCES, {403, "AccessDenied" }},
+ { EPERM, {401, "AccessDenied" }},
+ { ENAMETOOLONG, {400, "Metadata name too long" }},
+ { ERR_USER_SUSPENDED, {401, "UserSuspended" }},
+ { ERR_INVALID_UTF8, {412, "Invalid UTF8" }},
+ { ERR_BAD_URL, {412, "Bad URL" }},
+ { ERR_NOT_SLO_MANIFEST, {400, "Not an SLO manifest" }},
+ { ERR_QUOTA_EXCEEDED, {413, "QuotaExceeded" }},
+ { ENOTEMPTY, {409, "There was a conflict when trying "
+ "to complete your request." }},
+ /* FIXME(rzarzynski): we need to find a way to apply Swift's error handling
+ * procedures also for ERR_ZERO_IN_URL. This make a problem as the validation
+ * is performed very early, even before setting the req_state::proto_flags. */
+ { ERR_ZERO_IN_URL, {412, "Invalid UTF8 or contains NULL"}},
+ { ERR_RATE_LIMITED, {498, "Rate Limited"}},
+});
+
+rgw_http_errors rgw_http_sts_errors({
+ { ERR_PACKED_POLICY_TOO_LARGE, {400, "PackedPolicyTooLarge" }},
+ { ERR_INVALID_IDENTITY_TOKEN, {400, "InvalidIdentityToken" }},
+});
+
+rgw_http_errors rgw_http_iam_errors({
+ { ERR_ROLE_EXISTS, {409, "EntityAlreadyExists"}},
+ { ERR_DELETE_CONFLICT, {409, "DeleteConflict"}},
+});
+
+using namespace ceph::crypto;
+
+rgw_err::
+rgw_err()
+{
+ clear();
+}
+
+void rgw_err::
+clear()
+{
+ http_ret = 200;
+ ret = 0;
+ err_code.clear();
+}
+
+bool rgw_err::
+is_clear() const
+{
+ return (http_ret == 200);
+}
+
+bool rgw_err::
+is_err() const
+{
+ return !(http_ret >= 200 && http_ret <= 399);
+}
+
+// The requestURI transferred from the frontend can be abs_path or absoluteURI
+// If it is absoluteURI, we should adjust it to abs_path for the following
+// S3 authorization and some other processes depending on the requestURI
+// The absoluteURI can start with "http://", "https://", "ws://" or "wss://"
+static string get_abs_path(const string& request_uri) {
+ const static string ABS_PREFIXS[] = {"http://", "https://", "ws://", "wss://"};
+ bool isAbs = false;
+ for (int i = 0; i < 4; ++i) {
+ if (boost::algorithm::starts_with(request_uri, ABS_PREFIXS[i])) {
+ isAbs = true;
+ break;
+ }
+ }
+ if (!isAbs) { // it is not a valid absolute uri
+ return request_uri;
+ }
+ size_t beg_pos = request_uri.find("://") + 3;
+ size_t len = request_uri.size();
+ beg_pos = request_uri.find('/', beg_pos);
+ if (beg_pos == string::npos) return request_uri;
+ return request_uri.substr(beg_pos, len - beg_pos);
+}
+
+req_info::req_info(CephContext *cct, const class RGWEnv *env) : env(env) {
+ method = env->get("REQUEST_METHOD", "");
+ script_uri = env->get("SCRIPT_URI", cct->_conf->rgw_script_uri.c_str());
+ request_uri = env->get("REQUEST_URI", cct->_conf->rgw_request_uri.c_str());
+ if (request_uri[0] != '/') {
+ request_uri = get_abs_path(request_uri);
+ }
+ auto pos = request_uri.find('?');
+ if (pos != string::npos) {
+ request_params = request_uri.substr(pos + 1);
+ request_uri = request_uri.substr(0, pos);
+ } else {
+ request_params = env->get("QUERY_STRING", "");
+ }
+ host = env->get("HTTP_HOST", "");
+
+ // strip off any trailing :port from host (added by CrossFTP and maybe others)
+ size_t colon_offset = host.find_last_of(':');
+ if (colon_offset != string::npos) {
+ bool all_digits = true;
+ for (unsigned i = colon_offset + 1; i < host.size(); ++i) {
+ if (!isdigit(host[i])) {
+ all_digits = false;
+ break;
+ }
+ }
+ if (all_digits) {
+ host.resize(colon_offset);
+ }
+ }
+}
+
+void req_info::rebuild_from(req_info& src)
+{
+ method = src.method;
+ script_uri = src.script_uri;
+ args = src.args;
+ if (src.effective_uri.empty()) {
+ request_uri = src.request_uri;
+ } else {
+ request_uri = src.effective_uri;
+ }
+ effective_uri.clear();
+ host = src.host;
+
+ x_meta_map = src.x_meta_map;
+ x_meta_map.erase("x-amz-date");
+}
+
+
+req_state::req_state(CephContext* _cct, RGWEnv* e, RGWUserInfo* u, uint64_t id)
+ : cct(_cct), user(u),
+ info(_cct, e), id(id)
+{
+ enable_ops_log = e->get_enable_ops_log();
+ enable_usage_log = e->get_enable_usage_log();
+ defer_to_bucket_acls = e->get_defer_to_bucket_acls();
+
+ time = Clock::now();
+}
+
+req_state::~req_state() {
+ delete formatter;
+}
+
+std::ostream& req_state::gen_prefix(std::ostream& out) const
+{
+ auto p = out.precision();
+ return out << "req " << id << ' '
+ << std::setprecision(3) << std::fixed << time_elapsed() // '0.123s'
+ << std::setprecision(p) << std::defaultfloat << ' ';
+}
+
+bool search_err(rgw_http_errors& errs, int err_no, int& http_ret, string& code)
+{
+ auto r = errs.find(err_no);
+ if (r != errs.end()) {
+ http_ret = r->second.first;
+ code = r->second.second;
+ return true;
+ }
+ return false;
+}
+
+void set_req_state_err(struct rgw_err& err, /* out */
+ int err_no, /* in */
+ const int prot_flags) /* in */
+{
+ if (err_no < 0)
+ err_no = -err_no;
+
+ err.ret = -err_no;
+
+ if (prot_flags & RGW_REST_SWIFT) {
+ if (search_err(rgw_http_swift_errors, err_no, err.http_ret, err.err_code))
+ return;
+ }
+
+ if (prot_flags & RGW_REST_STS) {
+ if (search_err(rgw_http_sts_errors, err_no, err.http_ret, err.err_code))
+ return;
+ }
+
+ if (prot_flags & RGW_REST_IAM) {
+ if (search_err(rgw_http_iam_errors, err_no, err.http_ret, err.err_code))
+ return;
+ }
+
+ //Default to searching in s3 errors
+ if (search_err(rgw_http_s3_errors, err_no, err.http_ret, err.err_code))
+ return;
+ dout(0) << "WARNING: set_req_state_err err_no=" << err_no
+ << " resorting to 500" << dendl;
+
+ err.http_ret = 500;
+ err.err_code = "UnknownError";
+}
+
+void set_req_state_err(struct req_state* s, int err_no, const string& err_msg)
+{
+ if (s) {
+ set_req_state_err(s, err_no);
+ if (s->prot_flags & RGW_REST_SWIFT && !err_msg.empty()) {
+ /* TODO(rzarzynski): there never ever should be a check like this one.
+ * It's here only for the sake of the patch's backportability. Further
+ * commits will move the logic to a per-RGWHandler replacement of
+ * the end_header() function. Alternativaly, we might consider making
+ * that just for the dump(). Please take a look on @cbodley's comments
+ * in PR #10690 (https://github.com/ceph/ceph/pull/10690). */
+ s->err.err_code = err_msg;
+ } else {
+ s->err.message = err_msg;
+ }
+ }
+}
+
+void set_req_state_err(struct req_state* s, int err_no)
+{
+ if (s) {
+ set_req_state_err(s->err, err_no, s->prot_flags);
+ }
+}
+
+void dump(struct req_state* s)
+{
+ if (s->format != RGW_FORMAT_HTML)
+ s->formatter->open_object_section("Error");
+ if (!s->err.err_code.empty())
+ s->formatter->dump_string("Code", s->err.err_code);
+ if (!s->err.message.empty())
+ s->formatter->dump_string("Message", s->err.message);
+ if (!s->bucket_name.empty()) // TODO: connect to expose_bucket
+ s->formatter->dump_string("BucketName", s->bucket_name);
+ if (!s->trans_id.empty()) // TODO: connect to expose_bucket or another toggle
+ s->formatter->dump_string("RequestId", s->trans_id);
+ s->formatter->dump_string("HostId", s->host_id);
+ if (s->format != RGW_FORMAT_HTML)
+ s->formatter->close_section();
+}
+
+struct str_len {
+ const char *str;
+ int len;
+};
+
+#define STR_LEN_ENTRY(s) { s, sizeof(s) - 1 }
+
+struct str_len meta_prefixes[] = { STR_LEN_ENTRY("HTTP_X_AMZ"),
+ STR_LEN_ENTRY("HTTP_X_GOOG"),
+ STR_LEN_ENTRY("HTTP_X_DHO"),
+ STR_LEN_ENTRY("HTTP_X_RGW"),
+ STR_LEN_ENTRY("HTTP_X_OBJECT"),
+ STR_LEN_ENTRY("HTTP_X_CONTAINER"),
+ STR_LEN_ENTRY("HTTP_X_ACCOUNT"),
+ {NULL, 0} };
+
+void req_info::init_meta_info(bool *found_bad_meta)
+{
+ x_meta_map.clear();
+
+ for (const auto& kv: env->get_map()) {
+ const char *prefix;
+ const string& header_name = kv.first;
+ const string& val = kv.second;
+ for (int prefix_num = 0; (prefix = meta_prefixes[prefix_num].str) != NULL; prefix_num++) {
+ int len = meta_prefixes[prefix_num].len;
+ const char *p = header_name.c_str();
+ if (strncmp(p, prefix, len) == 0) {
+ dout(10) << "meta>> " << p << dendl;
+ const char *name = p+len; /* skip the prefix */
+ int name_len = header_name.size() - len;
+
+ if (found_bad_meta && strncmp(name, "_META_", name_len) == 0)
+ *found_bad_meta = true;
+
+ char name_low[meta_prefixes[0].len + name_len + 1];
+ snprintf(name_low, meta_prefixes[0].len - 5 + name_len + 1, "%s%s", meta_prefixes[0].str + 5 /* skip HTTP_ */, name); // normalize meta prefix
+ int j;
+ for (j = 0; name_low[j]; j++) {
+ if (name_low[j] != '_')
+ name_low[j] = tolower(name_low[j]);
+ else
+ name_low[j] = '-';
+ }
+ name_low[j] = 0;
+
+ auto it = x_meta_map.find(name_low);
+ if (it != x_meta_map.end()) {
+ string old = it->second;
+ boost::algorithm::trim_right(old);
+ old.append(",");
+ old.append(val);
+ x_meta_map[name_low] = old;
+ } else {
+ x_meta_map[name_low] = val;
+ }
+ }
+ }
+ }
+ for (const auto& kv: x_meta_map) {
+ dout(10) << "x>> " << kv.first << ":" << rgw::crypt_sanitize::x_meta_map{kv.first, kv.second} << dendl;
+ }
+}
+
+std::ostream& operator<<(std::ostream& oss, const rgw_err &err)
+{
+ oss << "rgw_err(http_ret=" << err.http_ret << ", err_code='" << err.err_code << "') ";
+ return oss;
+}
+
+string rgw_string_unquote(const string& s)
+{
+ if (s[0] != '"' || s.size() < 2)
+ return s;
+
+ int len;
+ for (len = s.size(); len > 2; --len) {
+ if (s[len - 1] != ' ')
+ break;
+ }
+
+ if (s[len-1] != '"')
+ return s;
+
+ return s.substr(1, len - 2);
+}
+
+static bool check_str_end(const char *s)
+{
+ if (!s)
+ return false;
+
+ while (*s) {
+ if (!isspace(*s))
+ return false;
+ s++;
+ }
+ return true;
+}
+
+static bool check_gmt_end(const char *s)
+{
+ if (!s || !*s)
+ return false;
+
+ while (isspace(*s)) {
+ ++s;
+ }
+
+ /* check for correct timezone */
+ if ((strncmp(s, "GMT", 3) != 0) &&
+ (strncmp(s, "UTC", 3) != 0)) {
+ return false;
+ }
+
+ return true;
+}
+
+static bool parse_rfc850(const char *s, struct tm *t)
+{
+ // FIPS zeroization audit 20191115: this memset is not security related.
+ memset(t, 0, sizeof(*t));
+ return check_gmt_end(strptime(s, "%A, %d-%b-%y %H:%M:%S ", t));
+}
+
+static bool parse_asctime(const char *s, struct tm *t)
+{
+ // FIPS zeroization audit 20191115: this memset is not security related.
+ memset(t, 0, sizeof(*t));
+ return check_str_end(strptime(s, "%a %b %d %H:%M:%S %Y", t));
+}
+
+static bool parse_rfc1123(const char *s, struct tm *t)
+{
+ // FIPS zeroization audit 20191115: this memset is not security related.
+ memset(t, 0, sizeof(*t));
+ return check_gmt_end(strptime(s, "%a, %d %b %Y %H:%M:%S ", t));
+}
+
+static bool parse_rfc1123_alt(const char *s, struct tm *t)
+{
+ // FIPS zeroization audit 20191115: this memset is not security related.
+ memset(t, 0, sizeof(*t));
+ return check_str_end(strptime(s, "%a, %d %b %Y %H:%M:%S %z", t));
+}
+
+bool parse_rfc2616(const char *s, struct tm *t)
+{
+ return parse_rfc850(s, t) || parse_asctime(s, t) || parse_rfc1123(s, t) || parse_rfc1123_alt(s,t);
+}
+
+bool parse_iso8601(const char *s, struct tm *t, uint32_t *pns, bool extended_format)
+{
+ // FIPS zeroization audit 20191115: this memset is not security related.
+ memset(t, 0, sizeof(*t));
+ const char *p;
+
+ if (!s)
+ s = "";
+
+ if (extended_format) {
+ p = strptime(s, "%Y-%m-%dT%T", t);
+ if (!p) {
+ p = strptime(s, "%Y-%m-%d %T", t);
+ }
+ } else {
+ p = strptime(s, "%Y%m%dT%H%M%S", t);
+ }
+ if (!p) {
+ dout(0) << "parse_iso8601 failed" << dendl;
+ return false;
+ }
+ const boost::string_view str = rgw_trim_whitespace(boost::string_view(p));
+ int len = str.size();
+
+ if (len == 0 || (len == 1 && str[0] == 'Z'))
+ return true;
+
+ if (str[0] != '.' ||
+ str[len - 1] != 'Z')
+ return false;
+
+ uint32_t ms;
+ boost::string_view nsstr = str.substr(1, len - 2);
+ int r = stringtoul(nsstr.to_string(), &ms);
+ if (r < 0)
+ return false;
+
+ if (!pns) {
+ return true;
+ }
+
+ if (nsstr.size() > 9) {
+ nsstr = nsstr.substr(0, 9);
+ }
+
+ uint64_t mul_table[] = { 0,
+ 100000000LL,
+ 10000000LL,
+ 1000000LL,
+ 100000LL,
+ 10000LL,
+ 1000LL,
+ 100LL,
+ 10LL,
+ 1 };
+
+
+ *pns = ms * mul_table[nsstr.size()];
+
+ return true;
+}
+
+int parse_key_value(string& in_str, const char *delim, string& key, string& val)
+{
+ if (delim == NULL)
+ return -EINVAL;
+
+ auto pos = in_str.find(delim);
+ if (pos == string::npos)
+ return -EINVAL;
+
+ key = rgw_trim_whitespace(in_str.substr(0, pos));
+ val = rgw_trim_whitespace(in_str.substr(pos + 1));
+
+ return 0;
+}
+
+int parse_key_value(string& in_str, string& key, string& val)
+{
+ return parse_key_value(in_str, "=", key,val);
+}
+
+boost::optional<std::pair<boost::string_view, boost::string_view>>
+parse_key_value(const boost::string_view& in_str,
+ const boost::string_view& delim)
+{
+ const size_t pos = in_str.find(delim);
+ if (pos == boost::string_view::npos) {
+ return boost::none;
+ }
+
+ const auto key = rgw_trim_whitespace(in_str.substr(0, pos));
+ const auto val = rgw_trim_whitespace(in_str.substr(pos + 1));
+
+ return std::make_pair(key, val);
+}
+
+boost::optional<std::pair<boost::string_view, boost::string_view>>
+parse_key_value(const boost::string_view& in_str)
+{
+ return parse_key_value(in_str, "=");
+}
+
+int parse_time(const char *time_str, real_time *time)
+{
+ struct tm tm;
+ uint32_t ns = 0;
+
+ if (!parse_rfc2616(time_str, &tm) && !parse_iso8601(time_str, &tm, &ns)) {
+ return -EINVAL;
+ }
+
+ time_t sec = internal_timegm(&tm);
+ *time = utime_t(sec, ns).to_real_time();
+
+ return 0;
+}
+
+#define TIME_BUF_SIZE 128
+
+void rgw_to_iso8601(const real_time& t, char *dest, int buf_size)
+{
+ utime_t ut(t);
+
+ char buf[TIME_BUF_SIZE];
+ struct tm result;
+ time_t epoch = ut.sec();
+ struct tm *tmp = gmtime_r(&epoch, &result);
+ if (tmp == NULL)
+ return;
+
+ if (strftime(buf, sizeof(buf), "%Y-%m-%dT%T", tmp) == 0)
+ return;
+
+ snprintf(dest, buf_size, "%s.%03dZ", buf, (int)(ut.usec() / 1000));
+}
+
+void rgw_to_iso8601(const real_time& t, string *dest)
+{
+ char buf[TIME_BUF_SIZE];
+ rgw_to_iso8601(t, buf, sizeof(buf));
+ *dest = buf;
+}
+
+
+string rgw_to_asctime(const utime_t& t)
+{
+ stringstream s;
+ t.asctime(s);
+ return s.str();
+}
+
+/*
+ * calculate the sha1 value of a given msg and key
+ */
+void calc_hmac_sha1(const char *key, int key_len,
+ const char *msg, int msg_len, char *dest)
+/* destination should be CEPH_CRYPTO_HMACSHA1_DIGESTSIZE bytes long */
+{
+ HMACSHA1 hmac((const unsigned char *)key, key_len);
+ hmac.Update((const unsigned char *)msg, msg_len);
+ hmac.Final((unsigned char *)dest);
+}
+
+/*
+ * calculate the sha256 value of a given msg and key
+ */
+void calc_hmac_sha256(const char *key, int key_len,
+ const char *msg, int msg_len, char *dest)
+{
+ char hash_sha256[CEPH_CRYPTO_HMACSHA256_DIGESTSIZE];
+
+ HMACSHA256 hmac((const unsigned char *)key, key_len);
+ hmac.Update((const unsigned char *)msg, msg_len);
+ hmac.Final((unsigned char *)hash_sha256);
+
+ memcpy(dest, hash_sha256, CEPH_CRYPTO_HMACSHA256_DIGESTSIZE);
+}
+
+using ceph::crypto::SHA256;
+
+/*
+ * calculate the sha256 hash value of a given msg
+ */
+sha256_digest_t calc_hash_sha256(const boost::string_view& msg)
+{
+ sha256_digest_t hash;
+
+ SHA256 hasher;
+ hasher.Update(reinterpret_cast<const unsigned char*>(msg.data()), msg.size());
+ hasher.Final(hash.v);
+
+ return hash;
+}
+
+SHA256* calc_hash_sha256_open_stream()
+{
+ return new SHA256;
+}
+
+void calc_hash_sha256_update_stream(SHA256 *hash, const char *msg, int len)
+{
+ hash->Update((const unsigned char *)msg, len);
+}
+
+string calc_hash_sha256_close_stream(SHA256 **phash)
+{
+ SHA256 *hash = *phash;
+ if (!hash) {
+ hash = calc_hash_sha256_open_stream();
+ }
+ char hash_sha256[CEPH_CRYPTO_HMACSHA256_DIGESTSIZE];
+
+ hash->Final((unsigned char *)hash_sha256);
+
+ char hex_str[(CEPH_CRYPTO_SHA256_DIGESTSIZE * 2) + 1];
+ buf_to_hex((unsigned char *)hash_sha256, CEPH_CRYPTO_SHA256_DIGESTSIZE, hex_str);
+
+ delete hash;
+ *phash = NULL;
+
+ return std::string(hex_str);
+}
+
+std::string calc_hash_sha256_restart_stream(SHA256 **phash)
+{
+ const auto hash = calc_hash_sha256_close_stream(phash);
+ *phash = calc_hash_sha256_open_stream();
+
+ return hash;
+}
+
+int NameVal::parse()
+{
+ auto delim_pos = str.find('=');
+ int ret = 0;
+
+ if (delim_pos == string::npos) {
+ name = str;
+ val = "";
+ ret = 1;
+ } else {
+ name = str.substr(0, delim_pos);
+ val = str.substr(delim_pos + 1);
+ }
+
+ return ret;
+}
+
+int RGWHTTPArgs::parse()
+{
+ int pos = 0;
+ bool end = false;
+
+ if (str.empty())
+ return 0;
+
+ if (str[pos] == '?')
+ pos++;
+
+ while (!end) {
+ int fpos = str.find('&', pos);
+ if (fpos < pos) {
+ end = true;
+ fpos = str.size();
+ }
+ std::string nameval = url_decode(str.substr(pos, fpos - pos), true);
+ NameVal nv(std::move(nameval));
+ int ret = nv.parse();
+ if (ret >= 0) {
+ string& name = nv.get_name();
+ string& val = nv.get_val();
+
+ append(name, val);
+ }
+
+ pos = fpos + 1;
+ }
+
+ return 0;
+}
+
+void RGWHTTPArgs::append(const string& name, const string& val)
+{
+ if (name.compare(0, sizeof(RGW_SYS_PARAM_PREFIX) - 1, RGW_SYS_PARAM_PREFIX) == 0) {
+ sys_val_map[name] = val;
+ } else {
+ val_map[name] = val;
+ }
+
+ if ((name.compare("acl") == 0) ||
+ (name.compare("cors") == 0) ||
+ (name.compare("notification") == 0) ||
+ (name.compare("location") == 0) ||
+ (name.compare("logging") == 0) ||
+ (name.compare("usage") == 0) ||
+ (name.compare("lifecycle") == 0) ||
+ (name.compare("delete") == 0) ||
+ (name.compare("uploads") == 0) ||
+ (name.compare("partNumber") == 0) ||
+ (name.compare("uploadId") == 0) ||
+ (name.compare("versionId") == 0) ||
+ (name.compare("start-date") == 0) ||
+ (name.compare("end-date") == 0) ||
+ (name.compare("versions") == 0) ||
+ (name.compare("versioning") == 0) ||
+ (name.compare("website") == 0) ||
+ (name.compare("requestPayment") == 0) ||
+ (name.compare("torrent") == 0) ||
+ (name.compare("tagging") == 0) ||
+ (name.compare("append") == 0) ||
+ (name.compare("position") == 0)) {
+ sub_resources[name] = val;
+ } else if (name[0] == 'r') { // root of all evil
+ if ((name.compare("response-content-type") == 0) ||
+ (name.compare("response-content-language") == 0) ||
+ (name.compare("response-expires") == 0) ||
+ (name.compare("response-cache-control") == 0) ||
+ (name.compare("response-content-disposition") == 0) ||
+ (name.compare("response-content-encoding") == 0)) {
+ sub_resources[name] = val;
+ has_resp_modifier = true;
+ }
+ } else if ((name.compare("subuser") == 0) ||
+ (name.compare("key") == 0) ||
+ (name.compare("caps") == 0) ||
+ (name.compare("index") == 0) ||
+ (name.compare("policy") == 0) ||
+ (name.compare("quota") == 0) ||
+ (name.compare("list") == 0) ||
+ (name.compare("object") == 0)) {
+
+ if (!admin_subresource_added) {
+ sub_resources[name] = "";
+ admin_subresource_added = true;
+ }
+ }
+}
+
+const string& RGWHTTPArgs::get(const string& name, bool *exists) const
+{
+ auto iter = val_map.find(name);
+ bool e = (iter != std::end(val_map));
+ if (exists)
+ *exists = e;
+ if (e)
+ return iter->second;
+ return empty_str;
+}
+
+boost::optional<const std::string&>
+RGWHTTPArgs::get_optional(const std::string& name) const
+{
+ bool exists;
+ const std::string& value = get(name, &exists);
+ if (exists) {
+ return value;
+ } else {
+ return boost::none;
+ }
+}
+
+int RGWHTTPArgs::get_bool(const string& name, bool *val, bool *exists)
+{
+ map<string, string>::iterator iter;
+ iter = val_map.find(name);
+ bool e = (iter != val_map.end());
+ if (exists)
+ *exists = e;
+
+ if (e) {
+ const char *s = iter->second.c_str();
+
+ if (strcasecmp(s, "false") == 0) {
+ *val = false;
+ } else if (strcasecmp(s, "true") == 0) {
+ *val = true;
+ } else {
+ return -EINVAL;
+ }
+ }
+
+ return 0;
+}
+
+int RGWHTTPArgs::get_bool(const char *name, bool *val, bool *exists)
+{
+ string s(name);
+ return get_bool(s, val, exists);
+}
+
+void RGWHTTPArgs::get_bool(const char *name, bool *val, bool def_val)
+{
+ bool exists = false;
+ if ((get_bool(name, val, &exists) < 0) ||
+ !exists) {
+ *val = def_val;
+ }
+}
+
+int RGWHTTPArgs::get_int(const char *name, int *val, int def_val)
+{
+ bool exists = false;
+ string val_str;
+ val_str = get(name, &exists);
+ if (!exists) {
+ *val = def_val;
+ return 0;
+ }
+
+ string err;
+
+ *val = (int)strict_strtol(val_str.c_str(), 10, &err);
+ if (!err.empty()) {
+ *val = def_val;
+ return -EINVAL;
+ }
+ return 0;
+}
+
+string RGWHTTPArgs::sys_get(const string& name, bool * const exists) const
+{
+ const auto iter = sys_val_map.find(name);
+ const bool e = (iter != sys_val_map.end());
+
+ if (exists) {
+ *exists = e;
+ }
+
+ return e ? iter->second : string();
+}
+
+bool rgw_transport_is_secure(CephContext *cct, const RGWEnv& env)
+{
+ const auto& m = env.get_map();
+ // frontend connected with ssl
+ if (m.count("SERVER_PORT_SECURE")) {
+ return true;
+ }
+ // ignore proxy headers unless explicitly enabled
+ if (!cct->_conf->rgw_trust_forwarded_https) {
+ return false;
+ }
+ // https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Forwarded
+ // Forwarded: by=<identifier>; for=<identifier>; host=<host>; proto=<http|https>
+ auto i = m.find("HTTP_FORWARDED");
+ if (i != m.end() && i->second.find("proto=https") != std::string::npos) {
+ return true;
+ }
+ // https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/X-Forwarded-Proto
+ i = m.find("HTTP_X_FORWARDED_PROTO");
+ if (i != m.end() && i->second == "https") {
+ return true;
+ }
+ return false;
+}
+
+namespace {
+Effect eval_or_pass(const boost::optional<Policy>& policy,
+ const rgw::IAM::Environment& env,
+ boost::optional<const rgw::auth::Identity&> id,
+ const uint64_t op,
+ const ARN& arn) {
+ if (!policy)
+ return Effect::Pass;
+ else
+ return policy->eval(env, id, op, arn);
+}
+
+}
+
+Effect eval_user_policies(const vector<Policy>& user_policies,
+ const rgw::IAM::Environment& env,
+ boost::optional<const rgw::auth::Identity&> id,
+ const uint64_t op,
+ const ARN& arn) {
+ auto usr_policy_res = Effect::Pass, prev_res = Effect::Pass;
+ for (auto& user_policy : user_policies) {
+ if (usr_policy_res = eval_or_pass(user_policy, env, id, op, arn); usr_policy_res == Effect::Deny)
+ return usr_policy_res;
+ else if (usr_policy_res == Effect::Allow)
+ prev_res = Effect::Allow;
+ else if (usr_policy_res == Effect::Pass && prev_res == Effect::Allow)
+ usr_policy_res = Effect::Allow;
+ }
+ return usr_policy_res;
+}
+
+bool verify_user_permission(const DoutPrefixProvider* dpp,
+ struct req_state * const s,
+ RGWAccessControlPolicy * const user_acl,
+ const vector<rgw::IAM::Policy>& user_policies,
+ const rgw::ARN& res,
+ const uint64_t op)
+{
+ auto usr_policy_res = eval_user_policies(user_policies, s->env, boost::none, op, res);
+ if (usr_policy_res == Effect::Deny) {
+ return false;
+ }
+
+ if (usr_policy_res == Effect::Allow) {
+ return true;
+ }
+
+ if (op == rgw::IAM::s3CreateBucket || op == rgw::IAM::s3ListAllMyBuckets) {
+ auto perm = op_to_perm(op);
+
+ return verify_user_permission_no_policy(dpp, s, user_acl, perm);
+ }
+
+ return false;
+}
+
+bool verify_user_permission_no_policy(const DoutPrefixProvider* dpp, struct req_state * const s,
+ RGWAccessControlPolicy * const user_acl,
+ const int perm)
+{
+ if (s->auth.identity->get_identity_type() == TYPE_ROLE)
+ return false;
+
+ /* S3 doesn't support account ACLs. */
+ if (!user_acl)
+ return true;
+
+ if ((perm & (int)s->perm_mask) != perm)
+ return false;
+
+ return user_acl->verify_permission(dpp, *s->auth.identity, perm, perm);
+}
+
+bool verify_user_permission(const DoutPrefixProvider* dpp,
+ struct req_state * const s,
+ const rgw::ARN& res,
+ const uint64_t op)
+{
+ return verify_user_permission(dpp, s, s->user_acl.get(), s->iam_user_policies, res, op);
+}
+
+bool verify_user_permission_no_policy(const DoutPrefixProvider* dpp,
+ struct req_state * const s,
+ const int perm)
+{
+ return verify_user_permission_no_policy(dpp, s, s->user_acl.get(), perm);
+}
+
+bool verify_requester_payer_permission(struct req_state *s)
+{
+ if (!s->bucket_info.requester_pays)
+ return true;
+
+ if (s->auth.identity->is_owner_of(s->bucket_info.owner))
+ return true;
+
+ if (s->auth.identity->is_anonymous()) {
+ return false;
+ }
+
+ const char *request_payer = s->info.env->get("HTTP_X_AMZ_REQUEST_PAYER");
+ if (!request_payer) {
+ bool exists;
+ request_payer = s->info.args.get("x-amz-request-payer", &exists).c_str();
+ if (!exists) {
+ return false;
+ }
+ }
+
+ if (strcasecmp(request_payer, "requester") == 0) {
+ return true;
+ }
+
+ return false;
+}
+
+bool verify_bucket_permission(const DoutPrefixProvider* dpp,
+ struct req_state * const s,
+ const rgw_bucket& bucket,
+ RGWAccessControlPolicy * const user_acl,
+ RGWAccessControlPolicy * const bucket_acl,
+ const boost::optional<Policy>& bucket_policy,
+ const vector<Policy>& user_policies,
+ const uint64_t op)
+{
+ if (!verify_requester_payer_permission(s))
+ return false;
+
+ auto usr_policy_res = eval_user_policies(user_policies, s->env, boost::none, op, ARN(bucket));
+ if (usr_policy_res == Effect::Deny)
+ return false;
+
+ auto r = eval_or_pass(bucket_policy, s->env, *s->auth.identity,
+ op, ARN(bucket));
+ if (r == Effect::Allow)
+ // It looks like S3 ACLs only GRANT permissions rather than
+ // denying them, so this should be safe.
+ return true;
+ else if (r == Effect::Deny)
+ return false;
+ else if (usr_policy_res == Effect::Allow) // r is Effect::Pass at this point
+ return true;
+
+ const auto perm = op_to_perm(op);
+
+ return verify_bucket_permission_no_policy(dpp, s, user_acl, bucket_acl, perm);
+}
+
+bool verify_bucket_permission_no_policy(const DoutPrefixProvider* dpp, struct req_state * const s,
+ RGWAccessControlPolicy * const user_acl,
+ RGWAccessControlPolicy * const bucket_acl,
+ const int perm)
+{
+ if (!bucket_acl)
+ return false;
+
+ if ((perm & (int)s->perm_mask) != perm)
+ return false;
+
+ if (bucket_acl->verify_permission(dpp, *s->auth.identity, perm, perm,
+ s->info.env->get("HTTP_REFERER")))
+ return true;
+
+ if (!user_acl)
+ return false;
+
+ return user_acl->verify_permission(dpp, *s->auth.identity, perm, perm);
+}
+
+bool verify_bucket_permission_no_policy(const DoutPrefixProvider* dpp, struct req_state * const s, const int perm)
+{
+ if (!verify_requester_payer_permission(s))
+ return false;
+
+ return verify_bucket_permission_no_policy(dpp,
+ s,
+ s->user_acl.get(),
+ s->bucket_acl.get(),
+ perm);
+}
+
+bool verify_bucket_permission(const DoutPrefixProvider* dpp, struct req_state * const s, const uint64_t op)
+{
+ return verify_bucket_permission(dpp,
+ s,
+ s->bucket,
+ s->user_acl.get(),
+ s->bucket_acl.get(),
+ s->iam_policy,
+ s->iam_user_policies,
+ op);
+}
+
+// Authorize anyone permitted by the policy and the bucket owner
+// unless explicitly denied by the policy.
+
+int verify_bucket_owner_or_policy(struct req_state* const s,
+ const uint64_t op)
+{
+ auto e = eval_or_pass(s->iam_policy,
+ s->env, *s->auth.identity,
+ op, ARN(s->bucket));
+ if (e == Effect::Allow ||
+ (e == Effect::Pass &&
+ s->auth.identity->is_owner_of(s->bucket_owner.get_id()))) {
+ return 0;
+ } else {
+ return -EACCES;
+ }
+}
+
+
+static inline bool check_deferred_bucket_perms(const DoutPrefixProvider* dpp,
+ struct req_state * const s,
+ const rgw_bucket& bucket,
+ RGWAccessControlPolicy * const user_acl,
+ RGWAccessControlPolicy * const bucket_acl,
+ const boost::optional<Policy>& bucket_policy,
+ const vector<Policy>& user_policies,
+ const uint8_t deferred_check,
+ const uint64_t op)
+{
+ return (s->defer_to_bucket_acls == deferred_check \
+ && verify_bucket_permission(dpp, s, bucket, user_acl, bucket_acl, bucket_policy, user_policies,op));
+}
+
+static inline bool check_deferred_bucket_only_acl(const DoutPrefixProvider* dpp,
+ struct req_state * const s,
+ RGWAccessControlPolicy * const user_acl,
+ RGWAccessControlPolicy * const bucket_acl,
+ const uint8_t deferred_check,
+ const int perm)
+{
+ return (s->defer_to_bucket_acls == deferred_check \
+ && verify_bucket_permission_no_policy(dpp, s, user_acl, bucket_acl, perm));
+}
+
+bool verify_object_permission(const DoutPrefixProvider* dpp, struct req_state * const s,
+ const rgw_obj& obj,
+ RGWAccessControlPolicy * const user_acl,
+ RGWAccessControlPolicy * const bucket_acl,
+ RGWAccessControlPolicy * const object_acl,
+ const boost::optional<Policy>& bucket_policy,
+ const vector<Policy>& user_policies,
+ const uint64_t op)
+{
+ if (!verify_requester_payer_permission(s))
+ return false;
+
+ auto usr_policy_res = eval_user_policies(user_policies, s->env, boost::none, op, ARN(obj));
+ if (usr_policy_res == Effect::Deny)
+ return false;
+
+ auto r = eval_or_pass(bucket_policy, s->env, *s->auth.identity, op, ARN(obj));
+ if (r == Effect::Allow)
+ // It looks like S3 ACLs only GRANT permissions rather than
+ // denying them, so this should be safe.
+ return true;
+ else if (r == Effect::Deny)
+ return false;
+ else if (usr_policy_res == Effect::Allow)
+ return true;
+
+ const auto perm = op_to_perm(op);
+
+ if (check_deferred_bucket_perms(dpp, s, obj.bucket, user_acl, bucket_acl, bucket_policy,
+ user_policies, RGW_DEFER_TO_BUCKET_ACLS_RECURSE, op) ||
+ check_deferred_bucket_perms(dpp, s, obj.bucket, user_acl, bucket_acl, bucket_policy,
+ user_policies, RGW_DEFER_TO_BUCKET_ACLS_FULL_CONTROL, rgw::IAM::s3All)) {
+ return true;
+ }
+
+ if (!object_acl) {
+ return false;
+ }
+
+ bool ret = object_acl->verify_permission(dpp, *s->auth.identity, s->perm_mask, perm);
+ if (ret) {
+ return true;
+ }
+
+ if (!s->cct->_conf->rgw_enforce_swift_acls)
+ return ret;
+
+ if ((perm & (int)s->perm_mask) != perm)
+ return false;
+
+ int swift_perm = 0;
+ if (perm & (RGW_PERM_READ | RGW_PERM_READ_ACP))
+ swift_perm |= RGW_PERM_READ_OBJS;
+ if (perm & RGW_PERM_WRITE)
+ swift_perm |= RGW_PERM_WRITE_OBJS;
+
+ if (!swift_perm)
+ return false;
+
+ /* we already verified the user mask above, so we pass swift_perm as the mask here,
+ otherwise the mask might not cover the swift permissions bits */
+ if (bucket_acl->verify_permission(dpp, *s->auth.identity, swift_perm, swift_perm,
+ s->info.env->get("HTTP_REFERER")))
+ return true;
+
+ if (!user_acl)
+ return false;
+
+ return user_acl->verify_permission(dpp, *s->auth.identity, swift_perm, swift_perm);
+}
+
+bool verify_object_permission_no_policy(const DoutPrefixProvider* dpp,
+ struct req_state * const s,
+ RGWAccessControlPolicy * const user_acl,
+ RGWAccessControlPolicy * const bucket_acl,
+ RGWAccessControlPolicy * const object_acl,
+ const int perm)
+{
+ if (check_deferred_bucket_only_acl(dpp, s, user_acl, bucket_acl, RGW_DEFER_TO_BUCKET_ACLS_RECURSE, perm) ||
+ check_deferred_bucket_only_acl(dpp, s, user_acl, bucket_acl, RGW_DEFER_TO_BUCKET_ACLS_FULL_CONTROL, RGW_PERM_FULL_CONTROL)) {
+ return true;
+ }
+
+ if (!object_acl) {
+ return false;
+ }
+
+ bool ret = object_acl->verify_permission(dpp, *s->auth.identity, s->perm_mask, perm);
+ if (ret) {
+ return true;
+ }
+
+ if (!s->cct->_conf->rgw_enforce_swift_acls)
+ return ret;
+
+ if ((perm & (int)s->perm_mask) != perm)
+ return false;
+
+ int swift_perm = 0;
+ if (perm & (RGW_PERM_READ | RGW_PERM_READ_ACP))
+ swift_perm |= RGW_PERM_READ_OBJS;
+ if (perm & RGW_PERM_WRITE)
+ swift_perm |= RGW_PERM_WRITE_OBJS;
+
+ if (!swift_perm)
+ return false;
+
+ /* we already verified the user mask above, so we pass swift_perm as the mask here,
+ otherwise the mask might not cover the swift permissions bits */
+ if (bucket_acl->verify_permission(dpp, *s->auth.identity, swift_perm, swift_perm,
+ s->info.env->get("HTTP_REFERER")))
+ return true;
+
+ if (!user_acl)
+ return false;
+
+ return user_acl->verify_permission(dpp, *s->auth.identity, swift_perm, swift_perm);
+}
+
+bool verify_object_permission_no_policy(const DoutPrefixProvider* dpp, struct req_state *s, int perm)
+{
+ if (!verify_requester_payer_permission(s))
+ return false;
+
+ return verify_object_permission_no_policy(dpp,
+ s,
+ s->user_acl.get(),
+ s->bucket_acl.get(),
+ s->object_acl.get(),
+ perm);
+}
+
+bool verify_object_permission(const DoutPrefixProvider* dpp, struct req_state *s, uint64_t op)
+{
+ return verify_object_permission(dpp,
+ s,
+ rgw_obj(s->bucket, s->object),
+ s->user_acl.get(),
+ s->bucket_acl.get(),
+ s->object_acl.get(),
+ s->iam_policy,
+ s->iam_user_policies,
+ op);
+}
+
+class HexTable
+{
+ char table[256];
+
+public:
+ HexTable() {
+ // FIPS zeroization audit 20191115: this memset is not security related.
+ memset(table, -1, sizeof(table));
+ int i;
+ for (i = '0'; i<='9'; i++)
+ table[i] = i - '0';
+ for (i = 'A'; i<='F'; i++)
+ table[i] = i - 'A' + 0xa;
+ for (i = 'a'; i<='f'; i++)
+ table[i] = i - 'a' + 0xa;
+ }
+
+ char to_num(char c) {
+ return table[(int)c];
+ }
+};
+
+static char hex_to_num(char c)
+{
+ static HexTable hex_table;
+ return hex_table.to_num(c);
+}
+
+std::string url_decode(const boost::string_view& src_str, bool in_query)
+{
+ std::string dest_str;
+ dest_str.reserve(src_str.length() + 1);
+
+ for (auto src = std::begin(src_str); src != std::end(src_str); ++src) {
+ if (*src != '%') {
+ if (!in_query || *src != '+') {
+ if (*src == '?') {
+ in_query = true;
+ }
+ dest_str.push_back(*src);
+ } else {
+ dest_str.push_back(' ');
+ }
+ } else {
+ /* 3 == strlen("%%XX") */
+ if (std::distance(src, std::end(src_str)) < 3) {
+ break;
+ }
+
+ src++;
+ const char c1 = hex_to_num(*src++);
+ const char c2 = hex_to_num(*src);
+ if (c1 < 0 || c2 < 0) {
+ return std::string();
+ } else {
+ dest_str.push_back(c1 << 4 | c2);
+ }
+ }
+ }
+
+ return dest_str;
+}
+
+void rgw_uri_escape_char(char c, string& dst)
+{
+ char buf[16];
+ snprintf(buf, sizeof(buf), "%%%.2X", (int)(unsigned char)c);
+ dst.append(buf);
+}
+
+static bool char_needs_url_encoding(char c)
+{
+ if (c <= 0x20 || c >= 0x7f)
+ return true;
+
+ switch (c) {
+ case 0x22:
+ case 0x23:
+ case 0x25:
+ case 0x26:
+ case 0x2B:
+ case 0x2C:
+ case 0x2F:
+ case 0x3A:
+ case 0x3B:
+ case 0x3C:
+ case 0x3E:
+ case 0x3D:
+ case 0x3F:
+ case 0x40:
+ case 0x5B:
+ case 0x5D:
+ case 0x5C:
+ case 0x5E:
+ case 0x60:
+ case 0x7B:
+ case 0x7D:
+ return true;
+ }
+ return false;
+}
+
+void url_encode(const string& src, string& dst, bool encode_slash)
+{
+ const char *p = src.c_str();
+ for (unsigned i = 0; i < src.size(); i++, p++) {
+ if ((!encode_slash && *p == 0x2F) || !char_needs_url_encoding(*p)) {
+ dst.append(p, 1);
+ }else {
+ rgw_uri_escape_char(*p, dst);
+ }
+ }
+}
+
+std::string url_encode(const std::string& src, bool encode_slash)
+{
+ std::string dst;
+ url_encode(src, dst, encode_slash);
+
+ return dst;
+}
+
+string rgw_trim_whitespace(const string& src)
+{
+ if (src.empty()) {
+ return string();
+ }
+
+ int start = 0;
+ for (; start != (int)src.size(); start++) {
+ if (!isspace(src[start]))
+ break;
+ }
+
+ int end = src.size() - 1;
+ if (end < start) {
+ return string();
+ }
+
+ for (; end > start; end--) {
+ if (!isspace(src[end]))
+ break;
+ }
+
+ return src.substr(start, end - start + 1);
+}
+
+boost::string_view rgw_trim_whitespace(const boost::string_view& src)
+{
+ boost::string_view res = src;
+
+ while (res.size() > 0 && std::isspace(res.front())) {
+ res.remove_prefix(1);
+ }
+ while (res.size() > 0 && std::isspace(res.back())) {
+ res.remove_suffix(1);
+ }
+ return res;
+}
+
+string rgw_trim_quotes(const string& val)
+{
+ string s = rgw_trim_whitespace(val);
+ if (s.size() < 2)
+ return s;
+
+ int start = 0;
+ int end = s.size() - 1;
+ int quotes_count = 0;
+
+ if (s[start] == '"') {
+ start++;
+ quotes_count++;
+ }
+ if (s[end] == '"') {
+ end--;
+ quotes_count++;
+ }
+ if (quotes_count == 2) {
+ return s.substr(start, end - start + 1);
+ }
+ return s;
+}
+
+struct rgw_name_to_flag {
+ const char *type_name;
+ uint32_t flag;
+};
+
+static int parse_list_of_flags(struct rgw_name_to_flag *mapping,
+ const string& str, uint32_t *perm)
+{
+ list<string> strs;
+ get_str_list(str, strs);
+ list<string>::iterator iter;
+ uint32_t v = 0;
+ for (iter = strs.begin(); iter != strs.end(); ++iter) {
+ string& s = *iter;
+ for (int i = 0; mapping[i].type_name; i++) {
+ if (s.compare(mapping[i].type_name) == 0)
+ v |= mapping[i].flag;
+ }
+ }
+
+ *perm = v;
+ return 0;
+}
+
+static struct rgw_name_to_flag cap_names[] = { {"*", RGW_CAP_ALL},
+ {"read", RGW_CAP_READ},
+ {"write", RGW_CAP_WRITE},
+ {NULL, 0} };
+
+int RGWUserCaps::parse_cap_perm(const string& str, uint32_t *perm)
+{
+ return parse_list_of_flags(cap_names, str, perm);
+}
+
+int RGWUserCaps::get_cap(const string& cap, string& type, uint32_t *pperm)
+{
+ int pos = cap.find('=');
+ if (pos >= 0) {
+ type = rgw_trim_whitespace(cap.substr(0, pos));
+ }
+
+ if (!is_valid_cap_type(type))
+ return -ERR_INVALID_CAP;
+
+ string cap_perm;
+ uint32_t perm = 0;
+ if (pos < (int)cap.size() - 1) {
+ cap_perm = cap.substr(pos + 1);
+ int r = RGWUserCaps::parse_cap_perm(cap_perm, &perm);
+ if (r < 0)
+ return r;
+ }
+
+ *pperm = perm;
+
+ return 0;
+}
+
+int RGWUserCaps::add_cap(const string& cap)
+{
+ uint32_t perm;
+ string type;
+
+ int r = get_cap(cap, type, &perm);
+ if (r < 0)
+ return r;
+
+ caps[type] |= perm;
+
+ return 0;
+}
+
+int RGWUserCaps::remove_cap(const string& cap)
+{
+ uint32_t perm;
+ string type;
+
+ int r = get_cap(cap, type, &perm);
+ if (r < 0)
+ return r;
+
+ map<string, uint32_t>::iterator iter = caps.find(type);
+ if (iter == caps.end())
+ return 0;
+
+ uint32_t& old_perm = iter->second;
+ old_perm &= ~perm;
+ if (!old_perm)
+ caps.erase(iter);
+
+ return 0;
+}
+
+int RGWUserCaps::add_from_string(const string& str)
+{
+ int start = 0;
+ do {
+ auto end = str.find(';', start);
+ if (end == string::npos)
+ end = str.size();
+
+ int r = add_cap(str.substr(start, end - start));
+ if (r < 0)
+ return r;
+
+ start = end + 1;
+ } while (start < (int)str.size());
+
+ return 0;
+}
+
+int RGWUserCaps::remove_from_string(const string& str)
+{
+ int start = 0;
+ do {
+ auto end = str.find(';', start);
+ if (end == string::npos)
+ end = str.size();
+
+ int r = remove_cap(str.substr(start, end - start));
+ if (r < 0)
+ return r;
+
+ start = end + 1;
+ } while (start < (int)str.size());
+
+ return 0;
+}
+
+void RGWUserCaps::dump(Formatter *f) const
+{
+ dump(f, "caps");
+}
+
+void RGWUserCaps::dump(Formatter *f, const char *name) const
+{
+ f->open_array_section(name);
+ map<string, uint32_t>::const_iterator iter;
+ for (iter = caps.begin(); iter != caps.end(); ++iter)
+ {
+ f->open_object_section("cap");
+ f->dump_string("type", iter->first);
+ uint32_t perm = iter->second;
+ string perm_str;
+ for (int i=0; cap_names[i].type_name; i++) {
+ if ((perm & cap_names[i].flag) == cap_names[i].flag) {
+ if (perm_str.size())
+ perm_str.append(", ");
+
+ perm_str.append(cap_names[i].type_name);
+ perm &= ~cap_names[i].flag;
+ }
+ }
+ if (perm_str.empty())
+ perm_str = "<none>";
+
+ f->dump_string("perm", perm_str);
+ f->close_section();
+ }
+
+ f->close_section();
+}
+
+struct RGWUserCap {
+ string type;
+ uint32_t perm;
+
+ void decode_json(JSONObj *obj) {
+ JSONDecoder::decode_json("type", type, obj);
+ string perm_str;
+ JSONDecoder::decode_json("perm", perm_str, obj);
+ if (RGWUserCaps::parse_cap_perm(perm_str, &perm) < 0) {
+ throw JSONDecoder::err("failed to parse permissions");
+ }
+ }
+};
+
+void RGWUserCaps::decode_json(JSONObj *obj)
+{
+ list<RGWUserCap> caps_list;
+ decode_json_obj(caps_list, obj);
+
+ list<RGWUserCap>::iterator iter;
+ for (iter = caps_list.begin(); iter != caps_list.end(); ++iter) {
+ RGWUserCap& cap = *iter;
+ caps[cap.type] = cap.perm;
+ }
+}
+
+int RGWUserCaps::check_cap(const string& cap, uint32_t perm)
+{
+ map<string, uint32_t>::iterator iter = caps.find(cap);
+
+ if ((iter == caps.end()) ||
+ (iter->second & perm) != perm) {
+ return -EPERM;
+ }
+
+ return 0;
+}
+
+bool RGWUserCaps::is_valid_cap_type(const string& tp)
+{
+ static const char *cap_type[] = { "user",
+ "users",
+ "buckets",
+ "metadata",
+ "usage",
+ "zone",
+ "bilog",
+ "mdlog",
+ "datalog",
+ "roles",
+ "user-policy"};
+
+ for (unsigned int i = 0; i < sizeof(cap_type) / sizeof(char *); ++i) {
+ if (tp.compare(cap_type[i]) == 0) {
+ return true;
+ }
+ }
+
+ return false;
+}
+
+void rgw_pool::from_str(const string& s)
+{
+ size_t pos = rgw_unescape_str(s, 0, '\\', ':', &name);
+ if (pos != string::npos) {
+ pos = rgw_unescape_str(s, pos, '\\', ':', &ns);
+ /* ignore return; if pos != string::npos it means that we had a colon
+ * in the middle of ns that wasn't escaped, we're going to stop there
+ */
+ }
+}
+
+string rgw_pool::to_str() const
+{
+ string esc_name;
+ rgw_escape_str(name, '\\', ':', &esc_name);
+ if (ns.empty()) {
+ return esc_name;
+ }
+ string esc_ns;
+ rgw_escape_str(ns, '\\', ':', &esc_ns);
+ return esc_name + ":" + esc_ns;
+}
+
+void rgw_raw_obj::decode_from_rgw_obj(bufferlist::const_iterator& bl)
+{
+ using ceph::decode;
+ rgw_obj old_obj;
+ decode(old_obj, bl);
+
+ get_obj_bucket_and_oid_loc(old_obj, oid, loc);
+ pool = old_obj.get_explicit_data_pool();
+}
+
+std::string rgw_bucket::get_key(char tenant_delim, char id_delim, size_t reserve) const
+{
+ const size_t max_len = tenant.size() + sizeof(tenant_delim) +
+ name.size() + sizeof(id_delim) + bucket_id.size() + reserve;
+
+ std::string key;
+ key.reserve(max_len);
+ if (!tenant.empty() && tenant_delim) {
+ key.append(tenant);
+ key.append(1, tenant_delim);
+ }
+ key.append(name);
+ if (!bucket_id.empty() && id_delim) {
+ key.append(1, id_delim);
+ key.append(bucket_id);
+ }
+ return key;
+}
+
+std::string rgw_bucket_shard::get_key(char tenant_delim, char id_delim,
+ char shard_delim) const
+{
+ static constexpr size_t shard_len{12}; // ":4294967295\0"
+ auto key = bucket.get_key(tenant_delim, id_delim, shard_len);
+ if (shard_id >= 0 && shard_delim) {
+ key.append(1, shard_delim);
+ key.append(std::to_string(shard_id));
+ }
+ return key;
+}
+
+static struct rgw_name_to_flag op_type_mapping[] = { {"*", RGW_OP_TYPE_ALL},
+ {"read", RGW_OP_TYPE_READ},
+ {"write", RGW_OP_TYPE_WRITE},
+ {"delete", RGW_OP_TYPE_DELETE},
+ {NULL, 0} };
+
+
+int rgw_parse_op_type_list(const string& str, uint32_t *perm)
+{
+ return parse_list_of_flags(op_type_mapping, str, perm);
+}
+
+bool match_policy(boost::string_view pattern, boost::string_view input,
+ uint32_t flag)
+{
+ const uint32_t flag2 = flag & (MATCH_POLICY_ACTION|MATCH_POLICY_ARN) ?
+ MATCH_CASE_INSENSITIVE : 0;
+ const bool colonblocks = !(flag & (MATCH_POLICY_RESOURCE |
+ MATCH_POLICY_STRING));
+
+ const auto npos = boost::string_view::npos;
+ boost::string_view::size_type last_pos_input = 0, last_pos_pattern = 0;
+ while (true) {
+ auto cur_pos_input = colonblocks ? input.find(":", last_pos_input) : npos;
+ auto cur_pos_pattern =
+ colonblocks ? pattern.find(":", last_pos_pattern) : npos;
+
+ auto substr_input = input.substr(last_pos_input, cur_pos_input);
+ auto substr_pattern = pattern.substr(last_pos_pattern, cur_pos_pattern);
+
+ if (!match_wildcards(substr_pattern, substr_input, flag2))
+ return false;
+
+ if (cur_pos_pattern == npos)
+ return cur_pos_input == npos;
+ if (cur_pos_input == npos)
+ return false;
+
+ last_pos_pattern = cur_pos_pattern + 1;
+ last_pos_input = cur_pos_input + 1;
+ }
+}
+
+/*
+ * make attrs look-like-this
+ * converts underscores to dashes
+ */
+string lowercase_dash_http_attr(const string& orig)
+{
+ const char *s = orig.c_str();
+ char buf[orig.size() + 1];
+ buf[orig.size()] = '\0';
+
+ for (size_t i = 0; i < orig.size(); ++i, ++s) {
+ switch (*s) {
+ case '_':
+ buf[i] = '-';
+ break;
+ default:
+ buf[i] = tolower(*s);
+ }
+ }
+ return string(buf);
+}
+
+/*
+ * make attrs Look-Like-This
+ * converts underscores to dashes
+ */
+string camelcase_dash_http_attr(const string& orig)
+{
+ const char *s = orig.c_str();
+ char buf[orig.size() + 1];
+ buf[orig.size()] = '\0';
+
+ bool last_sep = true;
+
+ for (size_t i = 0; i < orig.size(); ++i, ++s) {
+ switch (*s) {
+ case '_':
+ case '-':
+ buf[i] = '-';
+ last_sep = true;
+ break;
+ default:
+ if (last_sep) {
+ buf[i] = toupper(*s);
+ } else {
+ buf[i] = tolower(*s);
+ }
+ last_sep = false;
+ }
+ }
+ return string(buf);
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-21 11:03:48 +0000