4 * Copyright (c) 2015 Samsung Electronics Co., Ltd. All rights reserved.
6 * Contact: Yong Yeon Kim <yy9875.kim@samsung.com>
8 * Licensed under the Apache License, Version 2.0 (the "License");
9 * you may not use this file except in compliance with the License.
10 * You may obtain a copy of the License at
12 * http://www.apache.org/licenses/LICENSE-2.0
14 * Unless required by applicable law or agreed to in writing, software
15 * distributed under the License is distributed on an "AS IS" BASIS,
16 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
17 * See the License for the specific language governing permissions and
18 * limitations under the License.
23 * This file contains Cynara integration code
25 * @file media-util-cynara.c
26 * @author Jacek Bukarewicz (j.bukarewicz@samsung.com)
34 #include <media-util-cynara.h>
35 #include <media-util-dbg.h>
36 #include <media-util-err.h>
37 #include <media-util-internal.h>
39 #include <cynara-client.h>
40 #include <cynara-session.h>
41 #include <cynara-error.h>
42 #include <cynara-creds-socket.h>
44 static cynara *_cynara = NULL;
45 static cynara_configuration *_p_conf = NULL;
46 G_LOCK_DEFINE_STATIC(cynara_mutex);
48 static void ms_cynara_dbg_err(const char *prefix, int error_code)
50 char error_buffer[256];
52 error_buffer[0] = '\0';
54 err = cynara_strerror(error_code, error_buffer, sizeof(error_buffer));
55 if (err == CYNARA_API_SUCCESS)
56 MSAPI_DBG_ERR("%s: %s", prefix, error_buffer);
58 MSAPI_DBG_ERR("%s: error code %i", prefix, error_code);
61 int ms_cynara_initialize(void)
65 ret = cynara_configuration_create(&_p_conf);
66 if (ret != CYNARA_API_SUCCESS) {
67 ms_cynara_dbg_err("cynara_configuration_create", ret);
68 return MS_MEDIA_ERR_INTERNAL;
70 ret = cynara_configuration_set_cache_size(_p_conf, 100);
71 if (ret != CYNARA_API_SUCCESS) {
72 ms_cynara_dbg_err("cynara_configuration_set_cache_size", ret);
73 return MS_MEDIA_ERR_INTERNAL;
75 ret = cynara_initialize(&_cynara, _p_conf);
76 if (ret != CYNARA_API_SUCCESS) {
77 ms_cynara_dbg_err("cynara_initialize", ret);
78 return MS_MEDIA_ERR_INTERNAL;
81 cynara_configuration_destroy(_p_conf);
83 return MS_MEDIA_ERR_NONE;
86 void ms_cynara_finish(void)
88 cynara_finish(_cynara);
92 int ms_cynara_receive_untrusted_message(int sockfd, ms_comm_msg_s *recv_msg, ms_peer_credentials *credentials)
95 int recv_msg_size = 0;
97 if (!recv_msg || !credentials)
98 return MS_MEDIA_ERR_INVALID_PARAMETER;
100 if ((recv_msg_size = read(sockfd, recv_msg, sizeof(ms_comm_msg_s))) < 0) {
101 MSAPI_DBG_STRERROR("recv failed");
102 return MS_MEDIA_ERR_IPC;
105 MSAPI_RETVM_IF(!ms_ipc_is_valid_msg(recv_msg->msg), MS_MEDIA_ERR_IPC, "Invalid msg");
107 MSAPI_DBG_SLOG("receive msg from P[%d] T[%d] M[%.*s] S[%.*s]", recv_msg->pid, recv_msg->msg_type, MAX_MSG_SIZE, recv_msg->msg, MS_UUID_SIZE, recv_msg->storage_id);
109 if (strlen(recv_msg->storage_id) >= MS_UUID_SIZE) {
110 MSAPI_DBG_ERR("IPC message is wrong. storage_id size is over MS_UUID_SIZE");
111 return MS_MEDIA_ERR_IPC;
114 ret = cynara_creds_socket_get_pid(sockfd, &(credentials->pid));
115 MSAPI_RETVM_IF(ret != 0, MS_MEDIA_ERR_INTERNAL, "[CYNARA]Failed to get pid");
117 ret = cynara_creds_socket_get_user(sockfd, USER_METHOD_UID, &(credentials->uid));
118 MSAPI_RETVM_IF(ret != 0, MS_MEDIA_ERR_INTERNAL, "[CYNARA]Failed to get uid");
120 ret = cynara_creds_socket_get_client(sockfd, CLIENT_METHOD_SMACK, &(credentials->smack));
122 MSAPI_DBG_ERR("[CYNARA]Failed to get smack");
123 MS_SAFE_FREE(credentials->uid);
125 return MS_MEDIA_ERR_INTERNAL;
128 return MS_MEDIA_ERR_NONE;
131 int ms_cynara_check(const ms_peer_credentials *creds, const char *privilege)
136 if (!creds || !privilege)
137 return MS_MEDIA_ERR_INVALID_PARAMETER;
139 session = cynara_session_from_pid(creds->pid);
140 MSAPI_RETVM_IF(session == NULL, MS_MEDIA_ERR_INTERNAL, "cynara_session_from_pid failed");
142 G_LOCK(cynara_mutex);
143 result = cynara_check(_cynara, creds->smack, session, creds->uid, privilege);
144 G_UNLOCK(cynara_mutex);
146 if (result != CYNARA_API_ACCESS_ALLOWED)
147 ms_cynara_dbg_err("cynara_check", result);
149 MS_SAFE_FREE(session);
150 return result == CYNARA_API_ACCESS_ALLOWED ? MS_MEDIA_ERR_NONE : MS_MEDIA_ERR_PERMISSION_DENIED;
153 int ms_cynara_enable_credentials_passing(int fd)
155 const int optval = 1;
158 err = setsockopt(fd, SOL_SOCKET, SO_PASSSEC, &optval, sizeof(optval));
159 MSAPI_RETVM_IF(err != 0, MS_MEDIA_ERR_IPC, "Failed to set SO_PASSSEC socket option");
161 err = setsockopt(fd, SOL_SOCKET, SO_PASSCRED, &optval, sizeof(optval));
162 MSAPI_RETVM_IF(err != 0, MS_MEDIA_ERR_IPC, "Failed to set SO_PASSCRED socket option");
164 return MS_MEDIA_ERR_NONE;