2 * Network Configuration Module
4 * Copyright (c) 2017 Samsung Electronics Co., Ltd. All rights reserved.
6 * Licensed under the Apache License, Version 2.0 (the "License");
7 * you may not use this file except in compliance with the License.
8 * You may obtain a copy of the License at
10 * http://www.apache.org/licenses/LICENSE-2.0
12 * Unless required by applicable law or agreed to in writing, software
13 * distributed under the License is distributed on an "AS IS" BASIS,
14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 * See the License for the specific language governing permissions and
16 * limitations under the License.
27 #include <arpa/inet.h>
28 #include <sys/ioctl.h>
34 #include "wmesh-log.h"
35 #include "wmesh-util.h"
36 #include "wmesh-service.h"
37 #include "wmesh-interface.h"
39 #define IPV4_MAX_LENGTH 16
40 #define BUF_LENGTH 256
42 #define MESH_DEFAULT_BASE_INTERFACE "wlan0"
43 #define MESH_DEFAULT_MESH_INTERFACE "mesh0"
44 #define MESH_DEFAULT_BRIDGE_INTERFACE "br0"
45 #define MESH_DEFAULT_EXTERNAL_INTERFACE "eth0"
46 #define MESH_DEFAULT_SOFTAP_INTERFACE "wlan1"
49 ETHERNET_CABLE_DETACHED = 0,
50 ETHERNET_CABLE_ATTACHED
54 int wmesh_interface_set(const char *interface, const char* ip_addr,
55 wmesh_set_interface_type_e type)
61 char ip[IPV4_MAX_LENGTH] = {0,};
62 char buf[BUF_LENGTH] = {0,};
64 if (interface == NULL) {
65 WMESH_LOGE("Invalid interface name !");
66 return WMESHD_ERROR_INVALID_PARAMETER;
69 sock = socket(AF_INET, SOCK_STREAM, 0);
71 WMESH_LOGE("Cannot open network interface socket");
72 return WMESHD_ERROR_IO_ERROR;
75 WMESH_LOGD("Initialize interface [%s]...", interface);
76 snprintf(ifr.ifr_name, IFNAMSIZ, "%s", interface);
79 if (NULL != ip_addr) {
80 struct sockaddr_in sai;
81 memset(&sai, 0, sizeof(struct sockaddr_in));
82 sai.sin_family = AF_INET;
84 snprintf(ip, IPV4_MAX_LENGTH, "%s", ip_addr);
86 WMESH_LOGD("Setting IP address: [%s]\n", ip);
87 if (!inet_aton(ip, &sai.sin_addr)) {
88 WMESH_LOGE("Failed to convert ip address");
90 return WMESHD_ERROR_OPERATION_FAILED;
93 memcpy(&ifr.ifr_addr, &sai, sizeof(sai));
95 ret = ioctl(sock, SIOCSIFADDR, &ifr);
97 (void) strerror_r(errno, buf, BUF_LENGTH);
98 WMESH_LOGE("Failed to set IP[%s] for interface[%s] : %s",
99 ip, ifr.ifr_name, buf);
103 /* Get status flag */
104 if (ioctl(sock, SIOCGIFFLAGS, &ifr) == -1) {
105 (void) strerror_r(errno, buf, BUF_LENGTH);
106 WMESH_LOGE("Failed to get interface[%s] status : %s",
109 snprintf(ifr.ifr_name, IFNAMSIZ, "%s", interface);
111 /* Set status flag */
112 if (WMESH_INTERFACE_UP == type) {
113 ifr.ifr_flags |= (IFF_UP);
114 if (ioctl(sock, SIOCSIFFLAGS, &ifr) == -1) {
115 (void) strerror_r(errno, buf, BUF_LENGTH);
116 WMESH_LOGE("Failed to change interface[%s] status UP : %s",
119 } else if (WMESH_INTERFACE_DOWN == type) {
120 ifr.ifr_flags &= (~IFF_UP);
121 if (ioctl(sock, SIOCSIFFLAGS, &ifr) == -1) {
122 (void) strerror_r(errno, buf, BUF_LENGTH);
123 WMESH_LOGE("Failed to change interface[%s] status DOWN : %s",
127 WMESH_LOGD("Do not change up/down status");
131 return WMESHD_ERROR_NONE;
135 /* Returns interface name in sequence order which is exists */
136 static char* _get_interface_exists_in_seq(const char* prefix)
142 const int IF_INDEX_MAX = 9;
144 for (i = 0; i <= IF_INDEX_MAX; i++) {
145 snprintf(buf, sizeof(buf), "/sys/class/net/%s%d", prefix, i);
147 ret = access(buf, F_OK);
149 /* This name is exists. use it */
150 snprintf(buf, sizeof(buf), "%s%d", prefix, i);
152 WMESH_LOGD(" use [%s]", res);
160 /* Returns interface name in sequence order which is exists */
161 static char* _get_interface_not_exists_in_seq(const char* prefix)
167 const int IF_INDEX_MAX = 9;
169 for (i = 0; i <= IF_INDEX_MAX; i++) {
170 snprintf(buf, sizeof(buf), "/sys/class/net/%s%d", prefix, i);
172 ret = access(buf, F_OK);
174 /* This name is not exists. use it */
175 snprintf(buf, sizeof(buf), "%s%d", prefix, i);
177 WMESH_LOGD(" use [%s]", res);
187 static bool _check_interface_exists(const char* if_name)
192 const int IF_INDEX_MAX = 9;
194 for (i = 0; i <= IF_INDEX_MAX; i++) {
195 snprintf(buf, sizeof(buf), "/sys/class/net/%s", if_name);
197 ret = access(buf, F_OK);
199 /* This name is exists. */
204 return false; //LCOV_EXCL_LINE
207 /* Check if interface is bridged */
208 static bool _check_bridge_interface_exists(const char* bridge, const char* if_name)
213 const int IF_INDEX_MAX = 9;
215 for (i = 0; i <= IF_INDEX_MAX; i++) {
216 snprintf(buf, sizeof(buf), "/sys/class/net/%s/brif/%s", bridge, if_name);
218 ret = access(buf, F_OK);
220 /* This name is exists. */
221 return true; //LCOV_EXCL_LINE
225 return false; //LCOV_EXCL_LINE
228 /* LCOV_EXCL_START */
229 char* wmesh_interface_get_address(const char* if_name)
232 char buf[32] = { 0, };
235 snprintf(buf, sizeof(buf), "/sys/class/net/%s/address", if_name);
236 pf = fopen(buf, "r");
238 if (!fgets(buf, 31, pf) || ferror(pf) || feof(pf)) {
239 WMESH_LOGE("Error open Inerface[%s]", if_name);
241 WMESH_LOGD("Interface[%s] address[%s]", if_name, buf);
244 result = g_strdup(buf);
253 int wmesh_interface_initialize(wmesh_interface_s *info)
256 /* LCOV_EXCL_START */
257 WMESH_LOGE("Invalid parameter");
258 return WMESHD_ERROR_INVALID_PARAMETER;
262 info->bridge_interface = g_strdup(MESH_DEFAULT_BRIDGE_INTERFACE);
263 if (NULL == info->bridge_interface) {
264 /* LCOV_EXCL_START */
265 WMESH_LOGE("Failed to get bridge interface !");
266 return WMESHD_ERROR_OPERATION_FAILED;
270 info->base_interface = g_strdup(MESH_DEFAULT_BASE_INTERFACE);
271 if (NULL == info->bridge_interface) {
272 /* LCOV_EXCL_START */
273 WMESH_LOGE("Failed to get base interface !");
274 return WMESHD_ERROR_OPERATION_FAILED;
278 info->mesh_interface = g_strdup(MESH_DEFAULT_MESH_INTERFACE);
279 if (NULL == info->bridge_interface) {
280 /* LCOV_EXCL_START */
281 WMESH_LOGE("Failed to get mesh interface !");
282 return WMESHD_ERROR_OPERATION_FAILED;
286 info->softap_interface = g_strdup(MESH_DEFAULT_SOFTAP_INTERFACE);
287 info->external_interface = g_strdup(MESH_DEFAULT_EXTERNAL_INTERFACE);
289 WMESH_LOGD("Interface configuration for mesh network :");
290 WMESH_LOGD(" Base : [%s]", info->base_interface);
291 WMESH_LOGD(" Mesh : [%s]", info->mesh_interface);
292 WMESH_LOGD(" Bridge : [%s]", info->bridge_interface);
293 WMESH_LOGD(" SoftAP : [%s]", info->softap_interface);
294 WMESH_LOGD(" External: [%s]", info->external_interface);
296 return WMESHD_ERROR_NONE;
299 static int _check_ethernet_cable_plugin_status(const char* interface,
300 cable_state_e *status)
305 char error_buf[256] = {0, };
306 char file_path[256] = {0, };
308 snprintf(file_path, 256, "/sys/class/net/%s/carrier", interface);
310 if (0 == access(file_path, F_OK)) {
311 fd = fopen(file_path, "r");
313 /* LCOV_EXCL_START */
314 WMESH_LOGE("Error! Could not open /sys/class/net/%s/carrier file",
316 return WMESHD_ERROR_IO_ERROR;
320 /* LCOV_EXCL_START */
321 WMESH_LOGE("Error! Could not access /sys/class/net/%s/carrier file",
323 return WMESHD_ERROR_IO_ERROR;
328 rv = fscanf(fd, "%d", &ret);
330 /* LCOV_EXCL_START */
331 strerror_r(errno, error_buf, 256);
332 WMESH_LOGE("Error! Failed to read from file, rv:[%d], error:[%s]",
335 return WMESHD_ERROR_IO_ERROR;
339 /* LCOV_EXCL_START */
341 WMESH_LOGD("/sys/class/net/%s/carrier : [%d]", interface, ret);
342 *status = ETHERNET_CABLE_ATTACHED;
343 } else if (ret == 0) {
344 WMESH_LOGD("/sys/class/net/%s/carrier : [%d]", interface, ret);
345 *status = ETHERNET_CABLE_DETACHED;
350 return WMESHD_ERROR_NONE;
353 int wmesh_interface_check_external_exists(const char* external_interface, bool *state)
355 /* TODO: Current logic checks only ethernet interface.
356 This logic should consider wireless interface if can */
357 int ret = WMESHD_ERROR_NONE;
359 cable_state_e cable_state = ETHERNET_CABLE_DETACHED;
361 if (NULL == external_interface || NULL == state)
362 return WMESHD_ERROR_INVALID_PARAMETER; //LCOV_EXCL_LINE
364 ex = _check_interface_exists(external_interface);
366 /* LCOV_EXCL_START */
367 WMESH_LOGE("External interface[%s] was not found.", external_interface);
368 return WMESHD_ERROR_INVALID_PARAMETER;
372 /* If external interface seems Ethernet, check cable state */
373 if (g_str_has_prefix(external_interface, "eth")) {
374 ret = _check_ethernet_cable_plugin_status(external_interface, &cable_state);
375 if (WMESHD_ERROR_NONE != ret) {
376 /* LCOV_EXCL_START */
377 WMESH_LOGE("Failed to get Ethernet cable state");
378 return WMESHD_ERROR_OPERATION_FAILED;
384 if (ETHERNET_CABLE_ATTACHED == cable_state)
385 *state = TRUE; /* LCOV_EXCL_LINE */
387 return WMESHD_ERROR_NONE;
390 int wmesh_interface_check(const char* interface)
394 if (NULL == interface || strlen(interface) == 0)
395 return WMESHD_ERROR_INVALID_PARAMETER; //LCOV_EXCL_LINE
397 ex = _check_interface_exists(interface);
399 /* LCOV_EXCL_START */
400 WMESH_LOGE("Interface[%s] was not found.", interface);
401 return WMESHD_ERROR_NO_DATA;
405 return WMESHD_ERROR_NONE;
408 int wmesh_interface_check_bridge_interface_exists(const char* bridge, const char* interface)
412 if (NULL == bridge || NULL == interface ||
413 strlen(bridge) == 0 || strlen(interface) == 0)
414 return WMESHD_ERROR_INVALID_PARAMETER; //LCOV_EXCL_LINE
416 ex = _check_bridge_interface_exists(bridge, interface);
418 /* LCOV_EXCL_START */
419 WMESH_LOGE("Interface[%s] was not found.", interface);
420 return WMESHD_ERROR_NO_DATA;
424 return WMESHD_ERROR_NONE; /* LCOV_EXCL_LINE */