ceph/src/rgw/rgw_opa.cc

   1 // -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
   2 // vim: ts=8 sw=2 smarttab ft=cpp
   3
   4 #include "rgw_opa.h"
   5 #include "rgw_http_client.h"
   6
   7 #define dout_context g_ceph_context
   8 #define dout_subsys ceph_subsys_rgw
   9
  10 int rgw_opa_authorize(RGWOp *& op,
  11                       req_state * const s)
  12 {
  13
  14   ldpp_dout(op, 2) << "authorizing request using OPA" << dendl;
  15
  16   /* get OPA url */
  17   const string& opa_url = s->cct->_conf->rgw_opa_url;
  18   if (opa_url == "") {
  19     ldpp_dout(op, 2) << "OPA_URL not provided" << dendl;
  20     return -ERR_INVALID_REQUEST;
  21   }
  22   ldpp_dout(op, 2) << "OPA URL= " << opa_url.c_str() << dendl;
  23
  24   /* get authentication token for OPA */
  25   const string& opa_token = s->cct->_conf->rgw_opa_token;
  26
  27   int ret;
  28   bufferlist bl;
  29   RGWHTTPTransceiver req(s->cct, "POST", opa_url.c_str(), &bl);
  30
  31   /* set required headers for OPA request */
  32   req.append_header("X-Auth-Token", opa_token);
  33   req.append_header("Content-Type", "application/json");
  34
  35   /* check if we want to verify OPA server SSL certificate */
  36   req.set_verify_ssl(s->cct->_conf->rgw_opa_verify_ssl);
  37
  38   /* create json request body */
  39   JSONFormatter jf;
  40   jf.open_object_section("");
  41   jf.open_object_section("input");
  42   jf.dump_string("method", s->info.env->get("REQUEST_METHOD"));
  43   jf.dump_string("relative_uri", s->relative_uri.c_str());
  44   jf.dump_string("decoded_uri", s->decoded_uri.c_str());
  45   jf.dump_string("params", s->info.request_params.c_str());
  46   jf.dump_string("request_uri_aws4", s->info.request_uri_aws4.c_str());
  47   jf.dump_string("object_name", s->object.name.c_str());
  48   jf.dump_string("subuser", s->auth.identity->get_subuser().c_str());
  49   jf.dump_object("user_info", s->user->get_info());
  50   jf.dump_object("bucket_info", s->bucket_info);
  51   jf.close_section();
  52   jf.close_section();
  53
  54   std::stringstream ss;
  55   jf.flush(ss);
  56   req.set_post_data(ss.str());
  57   req.set_send_length(ss.str().length());
  58
  59   /* send request */
  60   ret = req.process(null_yield);
  61   if (ret < 0) {
  62     ldpp_dout(op, 2) << "OPA process error:" << bl.c_str() << dendl;
  63     return ret;
  64   }
  65
  66   /* check OPA response */
  67   JSONParser parser;
  68   if (!parser.parse(bl.c_str(), bl.length())) {
  69     ldpp_dout(op, 2) << "OPA parse error: malformed json" << dendl;
  70     return -EINVAL;
  71   }
  72
  73   bool opa_result;
  74   JSONDecoder::decode_json("result", opa_result, &parser);
  75
  76   if (opa_result == false) {
  77     ldpp_dout(op, 2) << "OPA rejecting request" << dendl;
  78     return -EPERM;
  79   }
  80
  81   ldpp_dout(op, 2) << "OPA accepting request" << dendl;
  82   return 0;
  83 }