void* handle_socket_machine(void *arg)
{
int fd = 0;
get_iface_mac("eth0",devicemac);
while(1) {
if(! is_wifi_connected()) {
debug(LOG_NOTICE, "tcp Waiting WIFI connected...\n");
sleep_intp_s(5);
continue;
}
if(! check_valid_id_name()) {
debug(LOG_NOTICE, "--- waitting deviceid and devicename from uart...\n");
sleep_intp_s(5);
continue;
}
fd = init_connect(glb_cfg.svr.ip, glb_cfg.svr.port, glb_cfg.svr.noneblock);
debug(LOG_NOTICE,"Remote Socket thread init %s:%d ret %d\n",glb_cfg.svr.ip, glb_cfg.svr.port, fd);
if(fd < 0) {
sleep_intp_s(15);
continue;
}
loop_socket_handle(fd, glb_cfg.svr.tt_ms);
if(fd > 0) close(fd);
sleep_intp_s(5);
}
return NULL;
}
int nozzle_get_mac(const nozzle_t nozzle, char **ether_addr)
{
int err = 0, savederrno = 0;
if (!ether_addr) {
errno = EINVAL;
return -1;
}
savederrno = pthread_mutex_lock(&config_mutex);
if (savederrno) {
errno = savederrno;
return -1;
}
if (!is_valid_nozzle(nozzle)) {
savederrno = EINVAL;
err = -1;
goto out_clean;
}
err = get_iface_mac(nozzle, ether_addr);
out_clean:
pthread_mutex_unlock(&config_mutex);
errno = savederrno;
return err;
}
/**@internal
* Main execution loop
*/
static void
main_loop(void)
{
int result;
pthread_t tid;
s_config *config = config_get_config();
request *r;
void **params;
/* Set the time when wifidog started */
if (!started_time) {
debug(LOG_INFO, "Setting started_time");
started_time = time(NULL);
}
else if (started_time < MINIMUM_STARTED_TIME) {
debug(LOG_WARNING, "Detected possible clock skew - re-setting started_time");
started_time = time(NULL);
}
/* If we don't have the Gateway IP address, get it. Can't fail. */
if (!config->gw_address) {
debug(LOG_DEBUG, "Finding IP address of %s", config->gw_interface);
if ((config->gw_address = get_iface_ip(config->gw_interface)) == NULL) {
debug(LOG_ERR, "Could not get IP address information of %s, exiting...", config->gw_interface);
exit(1);
}
debug(LOG_DEBUG, "%s = %s", config->gw_interface, config->gw_address);
}
/* If we don't have the Gateway ID, construct it from the internal MAC address.
* "Can't fail" so exit() if the impossible happens. */
if (!config->gw_mac) {
debug(LOG_DEBUG, "Finding MAC address of %s", config->gw_interface);
if ((config->gw_mac = get_iface_mac(config->gw_interface)) == NULL) {
debug(LOG_ERR, "Could not get MAC address information of %s, exiting...", config->gw_interface);
exit(1);
}
debug(LOG_DEBUG, "%s = %s", config->gw_interface, config->gw_mac);
}
/* Initializes the web server */
debug(LOG_NOTICE, "Creating web server on %s:%d", config->gw_address, config->gw_port);
if ((webserver = httpdCreate(config->gw_address, config->gw_port)) == NULL) {
debug(LOG_ERR, "Could not create web server: %s", strerror(errno));
exit(1);
}
debug(LOG_DEBUG, "Assigning callbacks to web server");
httpdAddCContent(webserver, "/", "ctbrihuang", 0, NULL, http_callback_wifidog);
httpdAddCContent(webserver, "/ctbrihuang", "", 0, NULL, http_callback_wifidog);
httpdAddCContent(webserver, "/debug", "", 0, NULL, http_callback_404);
httpdAddCContent(webserver, "/ctbrihuang", "about", 0, NULL, http_callback_about);
httpdAddCContent(webserver, "/ctbrihuang", "status", 0, NULL, http_callback_status);
httpdAddCContent(webserver, "/smartwifi", "auth", 0, NULL, http_callback_auth);
/*httpdAddCContent(webserver, "/ctbrihuang", "logout", 0, NULL, http_callback_logout);
*/
httpdAddC404Content(webserver, http_callback_404);
fw_destroy();
if (!fw_init()) {
debug(LOG_ERR, "FATAL: Failed to initialize firewall");
exit(1);
}
/* Start update thread */
result = pthread_create(&tid_update, NULL, (void *)thread_update, NULL);
if (result != 0) {
debug(LOG_ERR, "FATAL: Failed to create a new thread (update) - exiting");
termination_handler(0);
}
pthread_detach(tid_update);
/* Start clean up thread */
result = pthread_create(&tid_fw_counter, NULL, (void *)thread_client_timeout_check, NULL);
if (result != 0) {
debug(LOG_ERR, "FATAL: Failed to create a new thread (fw_counter) - exiting");
termination_handler(0);
}
pthread_detach(tid_fw_counter);
/* Start control thread */
result = pthread_create(&tid, NULL, (void *)thread_wdctl, (void *)safe_strdup(config->wdctl_sock));
if (result != 0) {
debug(LOG_ERR, "FATAL: Failed to create a new thread (wdctl) - exiting");
termination_handler(0);
}
pthread_detach(tid);
/* Start heartbeat thread */
result = pthread_create(&tid_ping, NULL, (void *)thread_ping, NULL);
if (result != 0) {
debug(LOG_ERR, "FATAL: Failed to create a new thread (ping) - exiting");
termination_handler(0);
}
pthread_detach(tid_ping);
result = pthread_create(&tid_ding, NULL, (void *)thread_ding, NULL);
if (result != 0) {
debug(LOG_ERR, "FATAL: Failed to create a new thread (ding) - exiting");
termination_handler(0);
}
pthread_detach(tid_ding);
result = pthread_create(&tid_authlog, NULL, (void *)thread_client_timeout_log, NULL);
if (result != 0) {
debug(LOG_ERR, "FATAL: Failed to create a new thread authlog - exiting");
termination_handler(0);
}
pthread_detach(tid_authlog);
debug(LOG_NOTICE, "Waiting for connections");
while(1) {
webserver->lastError = 0;
r = httpdGetConnection(webserver, NULL);
/* We can't convert this to a switch because there might be
* values that are not -1, 0 or 1. */
if (webserver->lastError == -1) {
/* Interrupted system call */
debug(LOG_DEBUG, "lastError is -1");
continue; /* restart loop */
}
else if (webserver->lastError < -1) {
/*
* FIXME
* An error occurred - should we abort?
* reboot the device ?
*/
debug(LOG_ERR, "FATAL: httpdGetConnection returned unexpected value %d, exiting.", webserver->lastError);
termination_handler(0);
}
else if (r != NULL) {
/*
* We got a connection
*
* We should create another thread
*/
debug(LOG_INFO, "Received connection from %s, spawning worker thread", r->clientAddr);
/* The void**'s are a simulation of the normal C
* function calling sequence. */
params = safe_malloc(2 * sizeof(void *));
*params = webserver;
*(params + 1) = r;
result = pthread_create(&tid, NULL, (void *)thread_httpd, (void *)params);
if (result != 0) {
debug(LOG_ERR, "FATAL: Failed to create a new thread (httpd) - exiting");
termination_handler(0);
}
pthread_detach(tid);
}
else {
debug(LOG_DEBUG, "lastError=%d", webserver->lastError);
/* webserver->lastError should be 2 */
/* XXX We failed an ACL.... No handling because
* we don't set any... */
}
}
/* never reached */
}
/**@internal
* Main execution loop
*/
static void
main_loop(void)
{
int result;
pthread_t tid;
s_config *config = config_get_config();
struct timespec wait_time;
int msec;
request *r;
void **params;
int* thread_serial_num_p;
/* Set the time when nodogsplash started */
if (!started_time) {
debug(LOG_INFO, "Setting started_time");
started_time = time(NULL);
} else if (started_time < MINIMUM_STARTED_TIME) {
debug(LOG_WARNING, "Detected possible clock skew - re-setting started_time");
started_time = time(NULL);
}
/* If we don't have the Gateway IP address, get it. Exit on failure. */
if (!config->gw_address) {
debug(LOG_DEBUG, "Finding IP address of %s", config->gw_interface);
if ((config->gw_address = get_iface_ip(config->gw_interface)) == NULL) {
debug(LOG_ERR, "Could not get IP address information of %s, exiting...", config->gw_interface);
exit(1);
}
if ((config->gw_mac = get_iface_mac(config->gw_interface)) == NULL) {
debug(LOG_ERR, "Could not get MAC address information of %s, exiting...", config->gw_interface);
exit(1);
}
debug(LOG_NOTICE, "Detected gateway %s at %s (%s)", config->gw_interface, config->gw_address, config->gw_mac);
}
/* Initializes the web server */
if ((webserver = httpdCreate(config->gw_address, config->gw_port)) == NULL) {
debug(LOG_ERR, "Could not create web server: %s", strerror(errno));
exit(1);
}
debug(LOG_NOTICE, "Created web server on %s:%d", config->gw_address, config->gw_port);
/* Set web root for server */
debug(LOG_DEBUG, "Setting web root: %s",config->webroot);
httpdSetFileBase(webserver,config->webroot);
/* Add images files to server: any file in config->imagesdir can be served */
debug(LOG_DEBUG, "Setting images subdir: %s",config->imagesdir);
httpdAddWildcardContent(webserver,config->imagesdir,NULL,config->imagesdir);
/* Add pages files to server: any file in config->pagesdir can be served */
debug(LOG_DEBUG, "Setting pages subdir: %s",config->pagesdir);
httpdAddWildcardContent(webserver,config->pagesdir,NULL,config->pagesdir);
debug(LOG_DEBUG, "Registering callbacks to web server");
httpdAddCContent(webserver, "/", "", 0, NULL, http_nodogsplash_callback_index);
httpdAddCWildcardContent(webserver, config->authdir, NULL, http_nodogsplash_callback_auth);
httpdAddCWildcardContent(webserver, config->denydir, NULL, http_nodogsplash_callback_deny);
httpdAddC404Content(webserver, http_nodogsplash_callback_404);
/* Reset the firewall (cleans it, in case we are restarting after nodogsplash crash) */
fw_destroy();
/* Then initialize it */
debug(LOG_NOTICE, "Initializing firewall rules");
if( fw_init() != 0 ) {
debug(LOG_ERR, "Error initializing firewall rules! Cleaning up");
fw_destroy();
debug(LOG_ERR, "Exiting because of error initializing firewall rules");
exit(1);
}
/* Start client statistics and timeout clean-up thread */
result = pthread_create(&tid_client_check, NULL, (void *)thread_client_timeout_check, NULL);
if (result != 0) {
debug(LOG_ERR, "FATAL: Failed to create thread_client_timeout_check - exiting");
termination_handler(0);
}
pthread_detach(tid_client_check);
/* Start control thread */
result = pthread_create(&tid, NULL, (void *)thread_ndsctl, (void *)safe_strdup(config->ndsctl_sock));
if (result != 0) {
debug(LOG_ERR, "FATAL: Failed to create thread_ndsctl - exiting");
termination_handler(0);
}
pthread_detach(tid);
/*
* Enter the httpd request handling loop
*/
debug(LOG_NOTICE, "Waiting for connections");
while(1) {
r = httpdGetConnection(webserver, NULL);
/* We can't convert this to a switch because there might be
* values that are not -1, 0 or 1. */
if (webserver->lastError == -1) {
/* Interrupted system call */
continue; /* continue loop from the top */
} else if (webserver->lastError < -1) {
/*
* FIXME
* An error occurred - should we abort?
* reboot the device ?
*/
debug(LOG_ERR, "FATAL: httpdGetConnection returned unexpected value %d, exiting.", webserver->lastError);
termination_handler(0);
} else if (r != NULL) {
/* We got a connection */
handle_http_request(webserver, r);
} else {
/* webserver->lastError should be 2 */
/* XXX We failed an ACL.... No handling because
* we don't set any... */
}
}
/* never reached */
}
char *get_mac_by_addr(in_addr_t addr, const char *loiface, const int max_tries) {
struct ethernet_frame eth;
struct arp arp;
char *mac, *ip;
unsigned char *mac_in_bytes, *rawpkt;
size_t rawpkt_sz;
int bytes_total;
int sk;
char buf[0xffff];
int ntry = max_tries;
unsigned short ether_type;
struct arp *arp_reply;
struct in_addr sin_addr;
struct timeval tv;
if (strcmp(loiface, "lo") == 0) {
return NULL; // INFO(Santiago): this is software instead of hardware and does not make sense.
}
sin_addr.s_addr = addr;
memset(&tv, 0, sizeof(tv));
tv.tv_sec = 5;
sk = lin_rsk_create(loiface);
if (sk == -1) return NULL;
setsockopt(sk, SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof(tv));
setsockopt(sk, SOL_SOCKET, SO_SNDTIMEO, &tv, sizeof(tv));
eth.payload = NULL;
memset(&arp, 0, sizeof(struct arp));
memset(eth.dest_hw_addr, 0xff, sizeof(eth.dest_hw_addr));
mac = get_iface_mac(loiface);
mac_in_bytes = mac2byte(mac, 6);
memcpy(eth.src_hw_addr, mac_in_bytes, 6);
free(mac);
mac = NULL;
free(mac_in_bytes);
eth.ether_type = ETHER_TYPE_ARP;
arp.hwtype = ARP_HW_TYPE_ETHERNET;
arp.ptype = ARP_PROTO_TYPE_IP;
arp.hw_addr_len = 6;
arp.pt_addr_len = 4;
arp.opcode = ARP_OPCODE_REQUEST;
arp.src_hw_addr = (unsigned char *) pig_newseg(arp.hw_addr_len);
memcpy(arp.src_hw_addr, eth.src_hw_addr, 6);
ip = get_iface_ip(loiface);
if (ip == NULL) {
free(arp.src_hw_addr);
return NULL;
}
arp.src_pt_addr = addr2byte(ip, 4);
free(ip);
arp.dest_hw_addr = (unsigned char *) pig_newseg(arp.hw_addr_len);
memset(arp.dest_hw_addr, 0, arp.hw_addr_len);
arp.dest_pt_addr = (unsigned char *)&addr;
eth.payload = mk_arp_dgram(ð.payload_size, arp);
rawpkt = mk_ethernet_frame(&rawpkt_sz, eth);
while (ntry-- > 0 && mac == NULL) {
bytes_total = sendto(sk, rawpkt, rawpkt_sz, 0, NULL, 0);
if (bytes_total > 0) {
bytes_total = recvfrom(sk, buf, sizeof(buf), 0, NULL, 0);
if (bytes_total > 0) {
ether_type = (unsigned short) buf[12] << 8 | buf[13];
if (ether_type == ETHER_TYPE_ARP) {
arp_reply = parse_arp_dgram((unsigned char *)&buf[14], bytes_total - 14);
if (arp_reply != NULL && arp_reply->opcode == ARP_OPCODE_REPLY) {
ip = (char *) pig_newseg(20);
sprintf(ip, "%d.%d.%d.%d", arp_reply->src_pt_addr[0],
arp_reply->src_pt_addr[1],
arp_reply->src_pt_addr[2],
arp_reply->src_pt_addr[3]);
if (strcmp(inet_ntoa(sin_addr), ip) == 0) {
mac = (char *) pig_newseg(20);
sprintf(mac, "%.2x:%.2x:%.2x:%.2x:%.2x:%.2x", arp_reply->src_hw_addr[0],
arp_reply->src_hw_addr[1],
arp_reply->src_hw_addr[2],
arp_reply->src_hw_addr[3],
arp_reply->src_hw_addr[4],
arp_reply->src_hw_addr[5]);
}
free(ip);
}
arp_header_free(arp_reply);
free(arp_reply);
}
}
}
}
free(rawpkt);
lin_rsk_close(sk);
free(eth.payload);
free(arp.src_hw_addr);
free(arp.src_pt_addr);
free(arp.dest_hw_addr);
return mac;
}
/**@internal
* Main execution loop
*/
static void
main_loop(void)
{
int result;
pthread_t tid;
s_config *config = config_get_config();
request *r;
void **params;
/* Set the time when wifidog started */
if (!started_time) {
debug(LOG_INFO, "Setting started_time");
started_time = time(NULL);
} else if (started_time < MINIMUM_STARTED_TIME) {
debug(LOG_WARNING, "Detected possible clock skew - re-setting started_time");
started_time = time(NULL);
}
/* save the pid file if needed */
if ((!config) && (!config->pidfile))
save_pid_file(config->pidfile);
/* If we don't have the Gateway IP address, get it. Can't fail. */
if (!config->gw_address) {
debug(LOG_DEBUG, "Finding IP address of %s", config->gw_interface);
if ((config->gw_address = get_iface_ip(config->gw_interface)) == NULL) {
debug(LOG_ERR, "Could not get IP address information of %s, exiting...", config->gw_interface);
exit(1);
}
debug(LOG_DEBUG, "%s = %s", config->gw_interface, config->gw_address);
}
/* If we don't have the Gateway ID, construct it from the internal MAC address.
* "Can't fail" so exit() if the impossible happens. */
if (!config->gw_id) {
debug(LOG_DEBUG, "Finding MAC address of %s", config->external_interface);
if ((config->gw_id = get_iface_mac(config->external_interface)) == NULL) {
debug(LOG_ERR, "Could not get MAC address information of %s, exiting...", config->external_interface);
exit(1);
}
debug(LOG_DEBUG, "%s = %s", config->gw_interface, config->gw_id);
}
/* Initializes the web server */
debug(LOG_NOTICE, "Creating web server on %s:%d", config->gw_address, config->gw_port);
if ((webserver = httpdCreate(config->gw_address, config->gw_port)) == NULL) {
debug(LOG_ERR, "Could not create web server: %s", strerror(errno));
exit(1);
}
register_fd_cleanup_on_fork(webserver->serverSock);
debug(LOG_DEBUG, "Assigning callbacks to web server");
httpdAddCContent(webserver, "/wifidog", "about", 0, NULL, http_callback_about);
httpdAddCContent(webserver, "/wifidog", "status", 0, NULL, http_callback_status);
httpdAddCContent(webserver, "/wifidog", "release", 0, NULL, http_callback_release);
httpdAddCContent(webserver, "/wifidog", "allow", 0, NULL, http_callback_allow_redirect);
httpdSetErrorFunction(webserver, 404, http_callback_404);
/* Set the auth server ip address. */
set_auth_svr_lastip(config);
/* Reset the firewall (if WiFiDog crashed) */
fw_destroy();
/* Then initialize it */
if (!fw_init()) {
debug(LOG_ERR, "FATAL: Failed to initialize firewall");
exit(1);
}
/* Start control thread */
result = pthread_create(&tid, NULL, (void *)thread_wdctl, (void *)safe_strdup(config->wdctl_sock));
if (result != 0) {
debug(LOG_ERR, "FATAL: Failed to create a new thread (wdctl) - exiting");
termination_handler(0);
}
pthread_detach(tid);
debug(LOG_NOTICE, "Waiting for connections");
while (1) {
r = httpdGetConnection(webserver, NULL);
/* We can't convert this to a switch because there might be
* values that are not -1, 0 or 1. */
if (webserver->lastError == -1) {
/* Interrupted system call */
if (NULL != r) {
httpdEndRequest(r);
}
} else if (webserver->lastError < -1) {
/*
* FIXME
* An error occurred - should we abort?
* reboot the device ?
*/
debug(LOG_ERR, "FATAL: httpdGetConnection returned unexpected value %d, exiting.", webserver->lastError);
termination_handler(0);
} else if (r != NULL) {
/*
* We got a connection
*
* We should create another thread
*/
debug(LOG_INFO, "Received connection from %s, spawning worker thread", r->clientAddr);
/* The void**'s are a simulation of the normal C
* function calling sequence. */
params = safe_malloc(2 * sizeof(void *));
*params = webserver;
*(params + 1) = r;
result = pthread_create(&tid, NULL, (void *)thread_httpd, (void *)params);
if (result != 0) {
debug(LOG_ERR, "FATAL: Failed to create a new thread (httpd) - exiting");
termination_handler(0);
}
pthread_detach(tid);
} else {
/* webserver->lastError should be 2 */
/* XXX We failed an ACL.... No handling because
* we don't set any... */
}
//update the auth server ip
update_auth_svr_lastip(config);
}
/* never reached */
}
/**@internal
* Main execution loop
*/
static void
main_loop(void)
{
int result = 0;
pthread_t tid;
s_config *config;
config = config_get_config();
/* Set the time when nodogsplash started */
if (!started_time) {
debug(LOG_INFO, "Setting started_time");
started_time = time(NULL);
} else if (started_time < MINIMUM_STARTED_TIME) {
debug(LOG_WARNING, "Detected possible clock skew - re-setting started_time");
started_time = time(NULL);
}
/* If we don't have the Gateway IP address, get it. Exit on failure. */
if (!config->gw_address) {
debug(LOG_DEBUG, "Finding IP address of %s", config->gw_interface);
if ((config->gw_address = get_iface_ip(config->gw_interface)) == NULL) {
debug(LOG_ERR, "Could not get IP address information of %s, exiting...", config->gw_interface);
exit(1);
}
}
if ((config->gw_mac = get_iface_mac(config->gw_interface)) == NULL) {
debug(LOG_ERR, "Could not get MAC address information of %s, exiting...", config->gw_interface);
exit(1);
}
debug(LOG_NOTICE, "Detected gateway %s at %s (%s)", config->gw_interface, config->gw_address, config->gw_mac);
/* Initializes the web server */
if ((webserver = MHD_start_daemon(
MHD_USE_EPOLL_INTERNALLY,
config->gw_port,
NULL, NULL,
libmicrohttpd_cb, NULL,
MHD_OPTION_CONNECTION_TIMEOUT, (unsigned int) 120,
MHD_OPTION_LISTENING_ADDRESS_REUSE, 1,
MHD_OPTION_END)) == NULL) {
debug(LOG_ERR, "Could not create web server: %s", strerror(errno));
exit(1);
}
/* TODO: set listening socket */
debug(LOG_NOTICE, "Created web server on %s:%d", config->gw_address, config->gw_port);
/*
httpdAddCContent(webserver, "/", "", 0, NULL, http_nodogsplash_callback_index);
httpdAddCWildcardContent(webserver, config->authdir, NULL, http_nodogsplash_callback_auth);
httpdAddCWildcardContent(webserver, config->denydir, NULL, http_nodogsplash_callback_deny);
httpdAddC404Content(webserver, http_nodogsplash_callback_404);
*/
/* Reset the firewall (cleans it, in case we are restarting after nodogsplash crash) */
fw_destroy();
/* Then initialize it */
debug(LOG_NOTICE, "Initializing firewall rules");
if (fw_init() != 0) {
debug(LOG_ERR, "Error initializing firewall rules! Cleaning up");
fw_destroy();
debug(LOG_ERR, "Exiting because of error initializing firewall rules");
exit(1);
}
/* Start client statistics and timeout clean-up thread */
result = pthread_create(&tid_client_check, NULL, thread_client_timeout_check, NULL);
if (result != 0) {
debug(LOG_ERR, "FATAL: Failed to create thread_client_timeout_check - exiting");
termination_handler(0);
}
pthread_detach(tid_client_check);
/* Start control thread */
result = pthread_create(&tid, NULL, thread_ndsctl, (void *)(config->ndsctl_sock));
if (result != 0) {
debug(LOG_ERR, "FATAL: Failed to create thread_ndsctl - exiting");
termination_handler(1);
}
result = pthread_join(tid, NULL);
if (result) {
debug(LOG_INFO, "Failed to wait for nodogsplash thread.");
}
MHD_stop_daemon(webserver);
termination_handler(result);
}
nozzle_t nozzle_open(char *devname, size_t devname_size, const char *updownpath)
{
int savederrno = 0;
nozzle_t nozzle = NULL;
char *temp_mac = NULL;
#ifdef KNET_LINUX
struct ifreq ifr;
#endif
#ifdef KNET_BSD
uint16_t i;
long int nozzlenum = 0;
char curnozzle[IFNAMSIZ];
#endif
if (devname == NULL) {
errno = EINVAL;
return NULL;
}
if (devname_size < IFNAMSIZ) {
errno = EINVAL;
return NULL;
}
if (strlen(devname) > IFNAMSIZ) {
errno = E2BIG;
return NULL;
}
#ifdef KNET_BSD
/*
* BSD does not support named devices like Linux
* but it is possible to force a nozzleX device number
* where X is 0 to 255.
*/
if (strlen(devname)) {
if (strncmp(devname, "tap", 3)) {
errno = EINVAL;
return NULL;
}
errno = 0;
nozzlenum = strtol(devname+3, NULL, 10);
if (errno) {
errno = EINVAL;
return NULL;
}
if ((nozzlenum < 0) || (nozzlenum > 255)) {
errno = EINVAL;
return NULL;
}
}
#endif
if (updownpath) {
/* only absolute paths */
if (updownpath[0] != '/') {
errno = EINVAL;
return NULL;
}
if (strlen(updownpath) >= UPDOWN_PATH_MAX) {
errno = E2BIG;
return NULL;
}
}
savederrno = pthread_mutex_lock(&config_mutex);
if (savederrno) {
errno = savederrno;
return NULL;
}
if (!lib_init) {
lib_cfg.head = NULL;
#ifdef KNET_LINUX
lib_cfg.nlsock = nl_socket_alloc();
if (!lib_cfg.nlsock) {
savederrno = errno;
goto out_error;
}
if (nl_connect(lib_cfg.nlsock, NETLINK_ROUTE) < 0) {
savederrno = EBUSY;
goto out_error;
}
lib_cfg.ioctlfd = socket(AF_INET, SOCK_STREAM, 0);
#endif
#ifdef KNET_BSD
lib_cfg.ioctlfd = socket(AF_LOCAL, SOCK_DGRAM, 0);
#endif
if (lib_cfg.ioctlfd < 0) {
savederrno = errno;
goto out_error;
}
lib_init = 1;
}
nozzle = malloc(sizeof(struct nozzle_iface));
if (!nozzle) {
savederrno = ENOMEM;
goto out_error;
}
memset(nozzle, 0, sizeof(struct nozzle_iface));
#ifdef KNET_BSD
if (!strlen(devname)) {
for (i = 0; i < 256; i++) {
snprintf(curnozzle, sizeof(curnozzle) - 1, "/dev/tap%u", i);
nozzle->fd = open(curnozzle, O_RDWR);
savederrno = errno;
if (nozzle->fd > 0) {
break;
}
}
snprintf(curnozzle, sizeof(curnozzle) -1 , "tap%u", i);
} else {
snprintf(curnozzle, sizeof(curnozzle) - 1, "/dev/%s", devname);
nozzle->fd = open(curnozzle, O_RDWR);
savederrno = errno;
snprintf(curnozzle, sizeof(curnozzle) - 1, "%s", devname);
}
if (nozzle->fd < 0) {
savederrno = EBUSY;
goto out_error;
}
strncpy(devname, curnozzle, IFNAMSIZ);
strncpy(nozzle->name, curnozzle, IFNAMSIZ);
#endif
#ifdef KNET_LINUX
if ((nozzle->fd = open("/dev/net/tun", O_RDWR)) < 0) {
savederrno = errno;
goto out_error;
}
memset(&ifr, 0, sizeof(struct ifreq));
memmove(ifname, devname, IFNAMSIZ);
ifr.ifr_flags = IFF_TAP | IFF_NO_PI;
if (ioctl(nozzle->fd, TUNSETIFF, &ifr) < 0) {
savederrno = errno;
goto out_error;
}
if ((strlen(devname) > 0) && (strcmp(devname, ifname) != 0)) {
savederrno = EBUSY;
goto out_error;
}
strncpy(devname, ifname, IFNAMSIZ);
strncpy(nozzle->name, ifname, IFNAMSIZ);
#endif
nozzle->default_mtu = get_iface_mtu(nozzle);
if (nozzle->default_mtu < 0) {
savederrno = errno;
goto out_error;
}
if (get_iface_mac(nozzle, &temp_mac) < 0) {
savederrno = errno;
goto out_error;
}
strncpy(nozzle->default_mac, temp_mac, 18);
free(temp_mac);
if (updownpath) {
int len = strlen(updownpath);
strcpy(nozzle->updownpath, updownpath);
if (nozzle->updownpath[len-1] != '/') {
nozzle->updownpath[len] = '/';
}
nozzle->hasupdown = 1;
}
nozzle->next = lib_cfg.head;
lib_cfg.head = nozzle;
pthread_mutex_unlock(&config_mutex);
errno = savederrno;
return nozzle;
out_error:
destroy_iface(nozzle);
pthread_mutex_unlock(&config_mutex);
errno = savederrno;
return NULL;
}