/** See if they are still active,
* refresh their traffic counters,
* remove and deny them if timed out
*/
static void
fw_refresh_client_list(void)
{
t_client *cp1, *cp2;
s_config *config = config_get_config();
const int preauth_idle_timeout_secs = 60 * config->preauth_idle_timeout;
const int auth_idle_timeout_secs = 60 * config->auth_idle_timeout;
const time_t now = time(NULL);
/* Update all the counters */
if (-1 == iptables_fw_counters_update()) {
debug(LOG_ERR, "Could not get counters from firewall!");
return;
}
LOCK_CLIENT_LIST();
for (cp1 = cp2 = client_get_first_client(); NULL != cp1; cp1 = cp2) {
cp2 = cp1->next;
if (!(cp1 = client_list_find_by_id(cp1->id))) {
debug(LOG_ERR, "Client was freed while being re-validated!");
continue;
}
int conn_state = cp1->fw_connection_state;
int last_updated = cp1->counters.last_updated;
if (cp1->session_end > 0 && cp1->session_end <= now) {
/* Session ended (only > 0 for FW_MARK_AUTHENTICATED by binauth) */
debug(LOG_NOTICE, "Force out user: %s %s, connected: %ds, in: %llukB, out: %llukB",
cp1->ip, cp1->mac, now - cp1->session_end,
cp1->counters.incoming / 1000, cp1->counters.outgoing / 1000);
auth_change_state(cp1, FW_MARK_PREAUTHENTICATED, "timeout_deauth");
} else if (preauth_idle_timeout_secs > 0
&& conn_state == FW_MARK_PREAUTHENTICATED
&& (last_updated + preauth_idle_timeout_secs) <= now) {
/* Timeout inactive preauthenticated user */
debug(LOG_NOTICE, "Timeout preauthenticated idle user: %s %s, inactive: %ds, in: %llukB, out: %llukB",
cp1->ip, cp1->mac, now - last_updated,
cp1->counters.incoming / 1000, cp1->counters.outgoing / 1000);
client_list_delete(cp1);
} else if (auth_idle_timeout_secs > 0
&& conn_state == FW_MARK_AUTHENTICATED
&& (last_updated + auth_idle_timeout_secs) <= now) {
/* Timeout inactive user */
debug(LOG_NOTICE, "Timeout authenticated idle user: %s %s, inactive: %ds, in: %llukB, out: %llukB",
cp1->ip, cp1->mac, now - last_updated,
cp1->counters.incoming / 1000, cp1->counters.outgoing / 1000);
auth_change_state(cp1, FW_MARK_PREAUTHENTICATED, "idle_deauth");
}
}
UNLOCK_CLIENT_LIST();
}
void
ndsctl_json(int fd)
{
t_client *client;
int indx;
unsigned long int now, durationsecs = 0;
unsigned long long int download_bytes, upload_bytes;
now = time(NULL);
/* Update the client's counters so info is current */
iptables_fw_counters_update();
LOCK_CLIENT_LIST();
cprintf(fd, "{\n\"client_length\": %d,\n", get_client_list_length());
client = client_get_first_client();
indx = 0;
cprintf(fd, "\"clients\":{\n");
while (client != NULL) {
cprintf(fd, "\"%s\":{\n", client->mac);
cprintf(fd, "\"client_id\":%d,\n", indx);
cprintf(fd, "\"ip\":\"%s\",\n\"mac\":\"%s\",\n", client->ip, client->mac);
cprintf(fd, "\"added\":%lld,\n", (long long) client->added_time);
cprintf(fd, "\"active\":%lld,\n", (long long) client->counters.last_updated);
cprintf(fd, "\"duration\":%lu,\n", now - client->added_time);
cprintf(fd, "\"token\":\"%s\",\n", client->token ? client->token : "none");
cprintf(fd, "\"state\":\"%s\",\n", fw_connection_state_as_string(client->fw_connection_state));
durationsecs = now - client->added_time;
download_bytes = client->counters.incoming;
upload_bytes = client->counters.outgoing;
cprintf(fd, "\"downloaded\":\"%llu\",\n\"avg_down_speed\":\"%.6g\",\n\"uploaded\":\"%llu\",\n\"avg_up_speed\":\"%.6g\"\n",
download_bytes/1000, ((double)download_bytes)/125/durationsecs,
upload_bytes/1000, ((double)upload_bytes)/125/durationsecs);
indx++;
client = client->next;
cprintf(fd, "}");
if(client) {
cprintf(fd, ",\n");
}
}
cprintf(fd, "}}" );
UNLOCK_CLIENT_LIST();
}
/** Ping clients to see if they are still active,
* refresh their traffic counters,
* remove and deny them if timed out
*/
void
fw_refresh_client_list(void)
{
t_client *cp1, *cp2;
time_t now, added_time, last_updated;
s_config *config = config_get_config();
/* Update all the counters */
if (-1 == iptables_fw_counters_update()) {
debug(LOG_ERR, "Could not get counters from firewall!");
return;
}
LOCK_CLIENT_LIST();
for (cp1 = cp2 = client_get_first_client(); NULL != cp1; cp1 = cp2) {
cp2 = cp1->next;
if (!(cp1 = client_list_find(cp1->ip, cp1->mac))) {
debug(LOG_ERR, "Node %s was freed while being re-validated!", cp1->ip);
} else {
now = time(NULL);
last_updated = cp1->counters.last_updated;
added_time = cp1->added_time;
if (last_updated + (config->checkinterval * config->clienttimeout) <= now) {
/* Timing out inactive user */
debug(LOG_NOTICE, "%s %s inactive %d secs. kB in: %llu kB out: %llu",
cp1->ip, cp1->mac, config->checkinterval * config->clienttimeout,
cp1->counters.incoming/1000, cp1->counters.outgoing/1000);
if (cp1->fw_connection_state == FW_MARK_AUTHENTICATED) {
iptables_fw_access(AUTH_MAKE_DEAUTHENTICATED, cp1);
}
client_list_delete(cp1);
} else if (added_time + (config->checkinterval * config->clientforceout) <= now) {
/* Forcing out user */
debug(LOG_NOTICE, "%s %s connected %d secs. kB in: %llu kB out: %llu",
cp1->ip, cp1->mac, config->checkinterval * config->clientforceout,
cp1->counters.incoming/1000, cp1->counters.outgoing/1000);
if (cp1->fw_connection_state == FW_MARK_AUTHENTICATED) {
iptables_fw_access(AUTH_MAKE_DEAUTHENTICATED, cp1);
}
client_list_delete(cp1);
}
}
}
UNLOCK_CLIENT_LIST();
}
void
ndsctl_clients(int fd)
{
t_client *client;
int indx;
unsigned long int now, durationsecs = 0;
unsigned long long int download_bytes, upload_bytes;
now = time(NULL);
/* Update the client's counters so info is current */
iptables_fw_counters_update();
LOCK_CLIENT_LIST();
cprintf(fd, "%d\n", get_client_list_length());
client = client_get_first_client();
if(client) {
cprintf(fd, "\n");
}
indx = 0;
while (client != NULL) {
cprintf(fd, "client_id=%d\n", indx);
cprintf(fd, "ip=%s\nmac=%s\n", client->ip, client->mac);
cprintf(fd, "added=%lld\n", (long long) client->added_time);
cprintf(fd, "active=%lld\n", (long long) client->counters.last_updated);
cprintf(fd, "duration=%lu\n", now - client->added_time);
cprintf(fd, "token=%s\n", client->token ? client->token : "none");
cprintf(fd, "state=%s\n", fw_connection_state_as_string(client->fw_connection_state));
durationsecs = now - client->added_time;
download_bytes = client->counters.incoming;
upload_bytes = client->counters.outgoing;
cprintf(fd, "downloaded=%llu\navg_down_speed=%.6g\nuploaded=%llu\navg_up_speed=%.6g\n\n",
download_bytes/1000, ((double)download_bytes)/125/durationsecs,
upload_bytes/1000, ((double)upload_bytes)/125/durationsecs);
indx++;
client = client->next;
}
UNLOCK_CLIENT_LIST();
}
/**Probably a misnomer, this function actually refreshes the entire client list's traffic counter, re-authenticates every client with the central server and update's the central servers traffic counters and notifies it if a client has logged-out.
* @todo Make this function smaller and use sub-fonctions
*/
void
fw_sync_with_authserver(void)
{
t_authresponse authresponse;
t_client *p1, *p2, *worklist, *tmp;
s_config *config = config_get_config();
if (-1 == iptables_fw_counters_update()) {
debug(LOG_ERR, "Could not get counters from firewall!");
return;
}
LOCK_CLIENT_LIST();
/* XXX Ideally, from a thread safety PoV, this function should build a list of client pointers,
* iterate over the list and have an explicit "client still valid" check while list is locked.
* That way clients can disappear during the cycle with no risk of trashing the heap or getting
* a SIGSEGV.
*/
client_list_dup(&worklist);
UNLOCK_CLIENT_LIST();
for (p1 = p2 = worklist; NULL != p1; p1 = p2) {
p2 = p1->next;
/* Ping the client, if he responds it'll keep activity on the link.
* However, if the firewall blocks it, it will not help. The suggested
* way to deal witht his is to keep the DHCP lease time extremely
* short: Shorter than config->checkinterval * config->clienttimeout */
icmp_ping(p1->ip);
/* Update the counters on the remote server only if we have an auth server */
if (config->auth_servers != NULL) {
auth_server_request(&authresponse, REQUEST_TYPE_COUNTERS, p1->ip, p1->mac, p1->token, p1->counters.incoming,
p1->counters.outgoing, p1->counters.incoming_delta, p1->counters.outgoing_delta);
}
time_t current_time = time(NULL);
debug(LOG_INFO,
"Checking client %s for timeout: Last updated %ld (%ld seconds ago), timeout delay %ld seconds, current time %ld, ",
p1->ip, p1->counters.last_updated, current_time - p1->counters.last_updated,
config->checkinterval * config->clienttimeout, current_time);
if (p1->counters.last_updated + (config->checkinterval * config->clienttimeout) <= current_time) {
/* Timing out user */
debug(LOG_INFO, "%s - Inactive for more than %ld seconds, removing client and denying in firewall",
p1->ip, config->checkinterval * config->clienttimeout);
LOCK_CLIENT_LIST();
tmp = client_list_find_by_client(p1);
if (NULL != tmp) {
logout_client(tmp);
} else {
debug(LOG_NOTICE, "Client was already removed. Not logging out.");
}
UNLOCK_CLIENT_LIST();
} else {
/*
* This handles any change in
* the status this allows us
* to change the status of a
* user while he's connected
*
* Only run if we have an auth server
* configured!
*/
LOCK_CLIENT_LIST();
tmp = client_list_find_by_client(p1);
if (NULL == tmp) {
UNLOCK_CLIENT_LIST();
debug(LOG_NOTICE, "Client was already removed. Skipping auth processing");
continue; /* Next client please */
}
if (config->auth_servers != NULL) {
switch (authresponse.authcode) {
case AUTH_DENIED:
debug(LOG_NOTICE, "%s - Denied. Removing client and firewall rules", tmp->ip);
fw_deny(tmp);
client_list_delete(tmp);
break;
case AUTH_VALIDATION_FAILED:
debug(LOG_NOTICE, "%s - Validation timeout, now denied. Removing client and firewall rules",
tmp->ip);
fw_deny(tmp);
client_list_delete(tmp);
break;
case AUTH_ALLOWED:
if (tmp->fw_connection_state != FW_MARK_KNOWN) {
debug(LOG_INFO, "%s - Access has changed to allowed, refreshing firewall and clearing counters",
tmp->ip);
//WHY did we deny, then allow!?!? benoitg 2007-06-21
//fw_deny(tmp->ip, tmp->mac, tmp->fw_connection_state); /* XXX this was possibly to avoid dupes. */
if (tmp->fw_connection_state != FW_MARK_PROBATION) {
tmp->counters.incoming_delta =
tmp->counters.outgoing_delta =
tmp->counters.incoming =
tmp->counters.outgoing = 0;
} else {
//We don't want to clear counters if the user was in validation, it probably already transmitted data..
debug(LOG_INFO,
"%s - Skipped clearing counters after all, the user was previously in validation",
tmp->ip);
}
fw_allow(tmp, FW_MARK_KNOWN);
}
break;
case AUTH_VALIDATION:
/*
* Do nothing, user
* is in validation
* period
*/
debug(LOG_INFO, "%s - User in validation period", tmp->ip);
break;
case AUTH_ERROR:
debug(LOG_WARNING, "Error communicating with auth server - leaving %s as-is for now", tmp->ip);
break;
default:
debug(LOG_ERR, "I do not know about authentication code %d", authresponse.authcode);
break;
}
}
UNLOCK_CLIENT_LIST();
}
}
client_list_destroy(worklist);
}
/*
* @return A string containing json clients list.
*/
char *
get_clients_json(void)
{
char buffer[STATUS_BUF_SIZ];
ssize_t len;
t_client *client;
int indx;
unsigned long int now, durationsecs = 0;
unsigned long long int download_bytes, upload_bytes;
now = time(NULL);
len = 0;
/* Update the client's counters so info is current */
iptables_fw_counters_update();
LOCK_CLIENT_LIST();
snprintf((buffer + len), (sizeof(buffer) - len), "{\n\"client_length\": %d,\n", get_client_list_length());
len = strlen(buffer);
client = client_get_first_client();
indx = 0;
snprintf((buffer + len), (sizeof(buffer) - len), "\"clients\":{\n");
len = strlen(buffer);
while (client != NULL) {
snprintf((buffer + len), (sizeof(buffer) - len), "\"%s\":{\n", client->mac);
len = strlen(buffer);
snprintf((buffer + len), (sizeof(buffer) - len), "\"client_id\":%d,\n", indx);
len = strlen(buffer);
snprintf((buffer + len), (sizeof(buffer) - len), "\"ip\":\"%s\",\n\"mac\":\"%s\",\n", client->ip, client->mac);
len = strlen(buffer);
snprintf((buffer + len), (sizeof(buffer) - len), "\"added\":%lld,\n", (long long) client->added_time);
len = strlen(buffer);
snprintf((buffer + len), (sizeof(buffer) - len), "\"active\":%lld,\n", (long long) client->counters.last_updated);
len = strlen(buffer);
snprintf((buffer + len), (sizeof(buffer) - len), "\"duration\":%lu,\n", now - client->added_time);
len = strlen(buffer);
snprintf((buffer + len), (sizeof(buffer) - len), "\"token\":\"%s\",\n", client->token ? client->token : "none");
len = strlen(buffer);
snprintf((buffer + len), (sizeof(buffer) - len), "\"state\":\"%s\",\n",
fw_connection_state_as_string(client->fw_connection_state));
len = strlen(buffer);
durationsecs = now - client->added_time;
download_bytes = client->counters.incoming;
upload_bytes = client->counters.outgoing;
snprintf((buffer + len), (sizeof(buffer) - len),
"\"downloaded\":\"%llu\",\n\"avg_down_speed\":\"%.6g\",\n\"uploaded\":\"%llu\",\n\"avg_up_speed\":\"%.6g\"\n",
download_bytes/1000, ((double)download_bytes)/125/durationsecs,
upload_bytes/1000, ((double)upload_bytes)/125/durationsecs);
len = strlen(buffer);
indx++;
client = client->next;
snprintf((buffer + len), (sizeof(buffer) - len), "}");
len = strlen(buffer);
if(client) {
snprintf((buffer + len), (sizeof(buffer) - len), ",\n");
len = strlen(buffer);
}
}
snprintf((buffer + len), (sizeof(buffer) - len), "}}" );
len = strlen(buffer);
UNLOCK_CLIENT_LIST();
return safe_strdup(buffer);
}
/*
* @return A string containing human-readable status text.
* MUST BE free()d by caller
*/
char *
get_status_text()
{
char buffer[STATUS_BUF_SIZ];
char timebuf[32];
char * str;
ssize_t len;
s_config *config;
t_client *client;
int indx;
unsigned long int now, uptimesecs, durationsecs = 0;
unsigned long long int download_bytes, upload_bytes;
t_MAC *trust_mac;
t_MAC *allow_mac;
t_MAC *block_mac;
config = config_get_config();
len = 0;
snprintf(buffer, (sizeof(buffer) - len), "==================\nNoDogSplash Status\n====\n");
len = strlen(buffer);
now = time(NULL);
uptimesecs = now - started_time;
snprintf((buffer + len), (sizeof(buffer) - len), "Version: " VERSION "\n");
len = strlen(buffer);
str = format_time(uptimesecs);
snprintf((buffer + len), (sizeof(buffer) - len), "Uptime: %s\n", str);
len = strlen(buffer);
free(str);
snprintf((buffer + len), (sizeof(buffer) - len), "Gateway Name: %s\n", config->gw_name);
len = strlen(buffer);
snprintf((buffer + len), (sizeof(buffer) - len), "Managed interface: %s\n", config->gw_interface);
len = strlen(buffer);
snprintf((buffer + len), (sizeof(buffer) - len), "Managed IP range: %s\n", config->gw_iprange);
len = strlen(buffer);
snprintf((buffer + len), (sizeof(buffer) - len), "Server listening: %s:%d\n",
config->gw_address, config->gw_port);
len = strlen(buffer);
if(config->authenticate_immediately) {
snprintf((buffer + len), (sizeof(buffer) - len), "Authenticate immediately: yes\n");
len = strlen(buffer);
} else {
snprintf((buffer + len), (sizeof(buffer) - len), "Splashpage: %s/%s\n",
config->webroot, config->splashpage);
len = strlen(buffer);
}
if(config->redirectURL) {
snprintf((buffer + len), (sizeof(buffer) - len), "Redirect URL: %s\n",
config->redirectURL);
len = strlen(buffer);
}
if(config->passwordauth) {
snprintf((buffer + len), (sizeof(buffer) - len), "Gateway password: %s\n",
config->password);
len = strlen(buffer);
}
if(config->usernameauth) {
snprintf((buffer + len), (sizeof(buffer) - len), "Gateway username: %s\n",
config->username);
len = strlen(buffer);
}
snprintf((buffer + len), (sizeof(buffer) - len), "Traffic control: %s\n", config->traffic_control ? "yes" : "no");
len = strlen(buffer);
if(config->traffic_control) {
if(config->download_limit > 0) {
snprintf((buffer + len), (sizeof(buffer) - len), "Download rate limit: %d kbit/s\n", config->download_limit);
len = strlen(buffer);
} else {
snprintf((buffer + len), (sizeof(buffer) - len), "Download rate limit: none\n");
len = strlen(buffer);
}
if(config->upload_limit > 0) {
snprintf((buffer + len), (sizeof(buffer) - len), "Upload rate limit: %d kbit/s\n", config->upload_limit);
len = strlen(buffer);
} else {
snprintf((buffer + len), (sizeof(buffer) - len), "Upload rate limit: none\n");
len = strlen(buffer);
}
}
download_bytes = iptables_fw_total_download();
snprintf((buffer + len), (sizeof(buffer) - len), "Total download: %llu kByte", download_bytes/1000);
len = strlen(buffer);
snprintf((buffer + len), (sizeof(buffer) - len), "; avg: %.6g kbit/s\n", ((double) download_bytes) / 125 / uptimesecs);
len = strlen(buffer);
upload_bytes = iptables_fw_total_upload();
snprintf((buffer + len), (sizeof(buffer) - len), "Total upload: %llu kByte", upload_bytes/1000);
len = strlen(buffer);
snprintf((buffer + len), (sizeof(buffer) - len), "; avg: %.6g kbit/s\n", ((double) upload_bytes) / 125 / uptimesecs);
len = strlen(buffer);
snprintf((buffer + len), (sizeof(buffer) - len), "====\n");
len = strlen(buffer);
snprintf((buffer + len), (sizeof(buffer) - len), "Client authentications since start: %u\n", authenticated_since_start);
len = strlen(buffer);
snprintf((buffer + len), (sizeof(buffer) - len), "Httpd request threads created/current: %d/%d\n", created_httpd_threads, current_httpd_threads);
len = strlen(buffer);
if(config->decongest_httpd_threads) {
snprintf((buffer + len), (sizeof(buffer) - len), "Httpd thread decongest threshold: %d threads\n", config->httpd_thread_threshold);
len = strlen(buffer);
snprintf((buffer + len), (sizeof(buffer) - len), "Httpd thread decongest delay: %d ms\n", config->httpd_thread_delay_ms);
len = strlen(buffer);
}
/* Update the client's counters so info is current */
iptables_fw_counters_update();
LOCK_CLIENT_LIST();
snprintf((buffer + len), (sizeof(buffer) - len), "Current clients: %d\n", get_client_list_length());
len = strlen(buffer);
client = client_get_first_client();
if(client) {
snprintf((buffer + len), (sizeof(buffer) - len), "\n");
len = strlen(buffer);
}
indx = 0;
while (client != NULL) {
snprintf((buffer + len), (sizeof(buffer) - len), "Client %d\n", indx);
len = strlen(buffer);
snprintf((buffer + len), (sizeof(buffer) - len), " IP: %s MAC: %s\n", client->ip, client->mac);
len = strlen(buffer);
ctime_r(&(client->added_time),timebuf);
snprintf((buffer + len), (sizeof(buffer) - len), " Added: %s", timebuf);
len = strlen(buffer);
ctime_r(&(client->counters.last_updated),timebuf);
snprintf((buffer + len), (sizeof(buffer) - len), " Active: %s", timebuf);
len = strlen(buffer);
str = format_time(client->counters.last_updated - client->added_time);
snprintf((buffer + len), (sizeof(buffer) - len), " Active duration: %s\n", str);
len = strlen(buffer);
free(str);
durationsecs = now - client->added_time;
str = format_time(durationsecs);
snprintf((buffer + len), (sizeof(buffer) - len), " Added duration: %s\n", str);
len = strlen(buffer);
free(str);
snprintf((buffer + len), (sizeof(buffer) - len), " Token: %s\n", client->token ? client->token : "none");
len = strlen(buffer);
snprintf((buffer + len), (sizeof(buffer) - len), " State: %s\n",
fw_connection_state_as_string(client->fw_connection_state));
len = strlen(buffer);
download_bytes = client->counters.incoming;
upload_bytes = client->counters.outgoing;
snprintf((buffer + len), (sizeof(buffer) - len),
" Download: %llu kByte; avg: %.6g kbit/s\n Upload: %llu kByte; avg: %.6g kbit/s\n\n",
download_bytes/1000, ((double)download_bytes)/125/durationsecs,
upload_bytes/1000, ((double)upload_bytes)/125/durationsecs);
len = strlen(buffer);
indx++;
client = client->next;
}
UNLOCK_CLIENT_LIST();
snprintf((buffer + len), (sizeof(buffer) - len), "====\n");
len = strlen(buffer);
snprintf((buffer + len), (sizeof(buffer) - len), "Blocked MAC addresses:");
len = strlen(buffer);
if(config->macmechanism == MAC_ALLOW) {
snprintf((buffer + len), (sizeof(buffer) - len), " N/A\n");
len = strlen(buffer);
} else if (config->blockedmaclist != NULL) {
snprintf((buffer + len), (sizeof(buffer) - len), "\n");
len = strlen(buffer);
for (block_mac = config->blockedmaclist; block_mac != NULL; block_mac = block_mac->next) {
snprintf((buffer + len), (sizeof(buffer) - len), " %s\n", block_mac->mac);
len = strlen(buffer);
}
} else {
snprintf((buffer + len), (sizeof(buffer) - len), " none\n");
len = strlen(buffer);
}
snprintf((buffer + len), (sizeof(buffer) - len), "Allowed MAC addresses:");
len = strlen(buffer);
if(config->macmechanism == MAC_BLOCK) {
snprintf((buffer + len), (sizeof(buffer) - len), " N/A\n");
len = strlen(buffer);
} else if (config->allowedmaclist != NULL) {
snprintf((buffer + len), (sizeof(buffer) - len), "\n");
len = strlen(buffer);
for (allow_mac = config->allowedmaclist; allow_mac != NULL; allow_mac = allow_mac->next) {
snprintf((buffer + len), (sizeof(buffer) - len), " %s\n", allow_mac->mac);
len = strlen(buffer);
}
} else {
snprintf((buffer + len), (sizeof(buffer) - len), " none\n");
len = strlen(buffer);
}
snprintf((buffer + len), (sizeof(buffer) - len), "Trusted MAC addresses:");
len = strlen(buffer);
if (config->trustedmaclist != NULL) {
snprintf((buffer + len), (sizeof(buffer) - len), "\n");
len = strlen(buffer);
for (trust_mac = config->trustedmaclist; trust_mac != NULL; trust_mac = trust_mac->next) {
snprintf((buffer + len), (sizeof(buffer) - len), " %s\n", trust_mac->mac);
len = strlen(buffer);
}
} else {
snprintf((buffer + len), (sizeof(buffer) - len), " none\n");
len = strlen(buffer);
}
snprintf((buffer + len), (sizeof(buffer) - len), "========\n");
len = strlen(buffer);
return safe_strdup(buffer);
}
/*
* @return A string containing machine-readable clients list.
* MUST BE free()d by caller
*/
char * get_clients_text()
{
char buffer[STATUS_BUF_SIZ];
ssize_t len;
t_client *client;
int indx;
unsigned long int now, durationsecs = 0;
unsigned long long int download_bytes, upload_bytes;
now = time(NULL);
len = 0;
/* Update the client's counters so info is current */
iptables_fw_counters_update();
LOCK_CLIENT_LIST();
snprintf((buffer + len), (sizeof(buffer) - len), "%d\n", get_client_list_length());
len = strlen(buffer);
client = client_get_first_client();
if(client) {
snprintf((buffer + len), (sizeof(buffer) - len), "\n");
len = strlen(buffer);
}
indx = 0;
while (client != NULL) {
snprintf((buffer + len), (sizeof(buffer) - len), "client_id=%d\n", indx);
len = strlen(buffer);
snprintf((buffer + len), (sizeof(buffer) - len), "ip=%s\nmac=%s\n", client->ip, client->mac);
len = strlen(buffer);
snprintf((buffer + len), (sizeof(buffer) - len), "added=%d\n", client->added_time);
len = strlen(buffer);
snprintf((buffer + len), (sizeof(buffer) - len), "active=%d\n", client->counters.last_updated);
len = strlen(buffer);
snprintf((buffer + len), (sizeof(buffer) - len), "duration=%d\n", now - client->added_time);
len = strlen(buffer);
snprintf((buffer + len), (sizeof(buffer) - len), "token=%s\n", client->token ? client->token : "none");
len = strlen(buffer);
snprintf((buffer + len), (sizeof(buffer) - len), "state=%s\n",
fw_connection_state_as_string(client->fw_connection_state));
len = strlen(buffer);
durationsecs = now - client->added_time;
download_bytes = client->counters.incoming;
upload_bytes = client->counters.outgoing;
snprintf((buffer + len), (sizeof(buffer) - len),
"downloaded=%llu\navg_down_speed=%.6g\nuploaded=%llu\navg_up_speed=%.6g\n\n",
download_bytes/1000, ((double)download_bytes)/125/durationsecs,
upload_bytes/1000, ((double)upload_bytes)/125/durationsecs);
len = strlen(buffer);
indx++;
client = client->next;
}
UNLOCK_CLIENT_LIST();
return safe_strdup(buffer);
}