From e6918187568dbd01842d8d1d2c808ce16a894239 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 21 Apr 2024 13:54:28 +0200 Subject: Adding upstream version 18.2.2. Signed-off-by: Daniel Baumann --- src/auth/krb/KrbClientHandler.cpp | 253 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 253 insertions(+) create mode 100644 src/auth/krb/KrbClientHandler.cpp (limited to 'src/auth/krb/KrbClientHandler.cpp') diff --git a/src/auth/krb/KrbClientHandler.cpp b/src/auth/krb/KrbClientHandler.cpp new file mode 100644 index 000000000..1f728b4dd --- /dev/null +++ b/src/auth/krb/KrbClientHandler.cpp @@ -0,0 +1,253 @@ +// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*- +// vim: ts=8 sw=2 smarttab +/* + * Ceph - scalable distributed file system + * + * Copyright (c) 2018 SUSE LLC. + * Author: Daniel Oliveira + * + * This is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License version 2.1, as published by the Free Software + * Foundation. See file COPYING. + * + */ + +#include "KrbClientHandler.hpp" + +#include +#include +#include "KrbProtocol.hpp" + +#include "auth/KeyRing.h" +#include "include/random.h" +#include "common/ceph_context.h" +#include "common/config.h" +#include "common/dout.h" + +#define dout_subsys ceph_subsys_auth +#undef dout_prefix +#define dout_prefix *_dout << "krb5/gssapi client request: " + +struct AuthAuthorizer; + +AuthAuthorizer* +KrbClientHandler::build_authorizer(uint32_t service_id) const +{ + ldout(cct, 20) + << "KrbClientHandler::build_authorizer(): Service: " + << ceph_entity_type_name(service_id) << dendl; + + KrbAuthorizer* krb_auth = new KrbAuthorizer(); + if (krb_auth) { + krb_auth->build_authorizer(cct->_conf->name, global_id); + } + return krb_auth; +} + + +KrbClientHandler::~KrbClientHandler() +{ + OM_uint32 gss_minor_status(0); + + gss_release_name(&gss_minor_status, &m_gss_client_name); + gss_release_name(&gss_minor_status, &m_gss_service_name); + gss_release_cred(&gss_minor_status, &m_gss_credentials); + gss_delete_sec_context(&gss_minor_status, &m_gss_sec_ctx, GSS_C_NO_BUFFER); + gss_release_buffer(&gss_minor_status, + static_cast(&m_gss_buffer_out)); +} + + +int KrbClientHandler::build_request(bufferlist& buff_list) const +{ + ldout(cct, 20) + << "KrbClientHandler::build_request() " << dendl; + + KrbTokenBlob krb_token; + KrbRequest krb_request; + + krb_request.m_request_type = + static_cast(GSSAuthenticationRequest::GSS_TOKEN); + + using ceph::encode; + encode(krb_request, buff_list); + + if (m_gss_buffer_out.length != 0) { + krb_token.m_token_blob.append(buffer::create_static( + m_gss_buffer_out.length, + reinterpret_cast + (m_gss_buffer_out.value))); + + encode(krb_token, buff_list); + ldout(cct, 20) + << "KrbClientHandler::build_request() : Token Blob: " << "\n"; + krb_token.m_token_blob.hexdump(*_dout); + *_dout << dendl; + } + return 0; +} + + +int KrbClientHandler::handle_response( + int ret, + bufferlist::const_iterator& buff_list, + CryptoKey *session_key, + std::string *connection_secret) +{ + auto result(ret); + gss_buffer_desc gss_buffer_in = {0, nullptr}; + gss_OID_set_desc gss_mechs_wanted = {0, nullptr}; + OM_uint32 gss_major_status(0); + OM_uint32 gss_minor_status(0); + OM_uint32 gss_wanted_flags(GSS_C_MUTUAL_FLAG | + GSS_C_INTEG_FLAG); + OM_uint32 gss_result_flags(0); + + ldout(cct, 20) + << "KrbClientHandler::handle_response() " << dendl; + + if (result < 0) { + return result; + } + + gss_mechs_wanted.elements = const_cast(&GSS_API_SPNEGO_OID_PTR); + gss_mechs_wanted.count = 1; + + KrbResponse krb_response; + + using ceph::decode; + decode(krb_response, buff_list); + if (m_gss_credentials == GSS_C_NO_CREDENTIAL) { + gss_OID krb_client_type = GSS_C_NT_USER_NAME; + std::string krb_client_name(cct->_conf->name.to_str()); + + gss_buffer_in.length = krb_client_name.length(); + gss_buffer_in.value = (const_cast(krb_client_name.c_str())); + + if (cct->_conf->name.get_type() == CEPH_ENTITY_TYPE_CLIENT) { + gss_major_status = gss_import_name(&gss_minor_status, + &gss_buffer_in, + krb_client_type, + &m_gss_client_name); + if (gss_major_status != GSS_S_COMPLETE) { + auto status_str(gss_auth_show_status(gss_major_status, + gss_minor_status)); + ldout(cct, 0) + << "ERROR: KrbClientHandler::handle_response() " + "[gss_import_name(gss_client_name)] failed! " + << gss_major_status << " " + << gss_minor_status << " " + << status_str + << dendl; + } + } + + gss_major_status = gss_acquire_cred(&gss_minor_status, + m_gss_client_name, + 0, + &gss_mechs_wanted, + GSS_C_INITIATE, + &m_gss_credentials, + nullptr, + nullptr); + if (gss_major_status != GSS_S_COMPLETE) { + auto status_str(gss_auth_show_status(gss_major_status, + gss_minor_status)); + ldout(cct, 20) + << "ERROR: KrbClientHandler::handle_response() " + "[gss_acquire_cred()] failed! " + << gss_major_status << " " + << gss_minor_status << " " + << status_str + << dendl; + return (-EACCES); + } + + gss_buffer_desc krb_input_name_buff = {0, nullptr}; + gss_OID krb_input_type = GSS_C_NT_HOSTBASED_SERVICE; + std::string gss_target_name(cct->_conf.get_val + ("gss_target_name")); + krb_input_name_buff.length = gss_target_name.length(); + krb_input_name_buff.value = (const_cast(gss_target_name.c_str())); + + gss_major_status = gss_import_name(&gss_minor_status, + &krb_input_name_buff, + krb_input_type, + &m_gss_service_name); + if (gss_major_status != GSS_S_COMPLETE) { + auto status_str(gss_auth_show_status(gss_major_status, + gss_minor_status)); + ldout(cct, 0) + << "ERROR: KrbClientHandler::handle_response() " + "[gss_import_name(gss_service_name)] failed! " + << gss_major_status << " " + << gss_minor_status << " " + << status_str + << dendl; + } + } else { + KrbTokenBlob krb_token; + + using ceph::decode; + decode(krb_token, buff_list); + ldout(cct, 20) + << "KrbClientHandler::handle_response() : Token Blob: " << "\n"; + krb_token.m_token_blob.hexdump(*_dout); + *_dout << dendl; + + gss_buffer_in.length = krb_token.m_token_blob.length(); + gss_buffer_in.value = krb_token.m_token_blob.c_str(); + } + + const gss_OID gss_mech_type = gss_mechs_wanted.elements; + if (m_gss_buffer_out.length != 0) { + gss_release_buffer(&gss_minor_status, + static_cast(&m_gss_buffer_out)); + } + + gss_major_status = gss_init_sec_context(&gss_minor_status, + m_gss_credentials, + &m_gss_sec_ctx, + m_gss_service_name, + gss_mech_type, + gss_wanted_flags, + 0, + nullptr, + &gss_buffer_in, + nullptr, + &m_gss_buffer_out, + &gss_result_flags, + nullptr); + switch (gss_major_status) { + case GSS_S_CONTINUE_NEEDED: + ldout(cct, 20) + << "KrbClientHandler::handle_response() : " + "[gss_init_sec_context(GSS_S_CONTINUE_NEEDED)] " << dendl; + result = (-EAGAIN); + break; + + case GSS_S_COMPLETE: + ldout(cct, 20) + << "KrbClientHandler::handle_response() : " + "[gss_init_sec_context(GSS_S_COMPLETE)] " << dendl; + result = 0; + break; + + default: + auto status_str(gss_auth_show_status(gss_major_status, + gss_minor_status)); + ldout(cct, 0) + << "ERROR: KrbClientHandler::handle_response() " + "[gss_init_sec_context()] failed! " + << gss_major_status << " " + << gss_minor_status << " " + << status_str + << dendl; + result = (-EACCES); + break; + } + + return result; +} + -- cgit v1.2.3