void http_callback_logout(httpd *webserver, request *r)
{
t_client *client;
s_config *config = config_get_config();
LOCK_CLIENT_LIST();
client = client_list_find_by_ip(r->clientAddr);
/* Send logout to auth server if client is logged in */
if (client != NULL) {
t_authresponse authresponse;
char *ip = strdup(client->ip);
char *mac = strdup(client->mac);
char *token = strdup(client->token);
unsigned long long incoming = client->counters.incoming;
unsigned long long outgoing = client->counters.outgoing;
debug(LOG_INFO, "Got manual logout from client ip %s, mac %s, token %s",
client->ip, client->mac, client->token);
fw_deny(client->ip, client->mac, client->fw_connection_state);
client_list_delete(client);
/* Unlock client list here since auth_server_request may take a while */
UNLOCK_CLIENT_LIST();
/* Advertise the logout if we have an auth server */
if (config->auth_servers != NULL) {
auth_server_request(&authresponse, REQUEST_TYPE_LOGOUT, ip,
mac, token, incoming, outgoing);
}
free(ip);
free(mac);
free(token);
} else {
/* Do nothing if the client is not in the client list (i.e. not logged in) */
debug(LOG_INFO, "Got manual logout from client %s, but client not in list", r->clientAddr);
UNLOCK_CLIENT_LIST();
}
if (config->auth_servers != NULL) {
/* Re-direct them to auth server */
char *urlFragment = NULL;
t_auth_serv *auth_server = get_auth_server();
safe_asprintf(&urlFragment, "%smessage=%s",
auth_server->authserv_msg_script_path_fragment,
GATEWAY_MESSAGE_ACCOUNT_LOGGED_OUT
);
http_send_redirect_to_auth(r, urlFragment, "Redirect to logout message");
free(urlFragment);
}
}
static int
_special_process(request *r, const char *mac, const char *redir_url)
{
t_offline_client *o_client = NULL;
if(_is_apple_captive(r->request.host)) {
int interval = 0;
LOCK_OFFLINE_CLIENT_LIST();
o_client = offline_client_list_find_by_mac(mac);
if(o_client == NULL) {
o_client = offline_client_list_add(r->clientAddr, mac);
} else {
o_client->last_login = time(NULL);
interval = o_client->last_login - o_client->first_login;
}
debug(LOG_INFO, "Into captive.apple.com hit_counts %d interval %d http version %d\n",
o_client->hit_counts, interval, r->request.version);
o_client->hit_counts++;
if(o_client->client_type == 1 ) {
UNLOCK_OFFLINE_CLIENT_LIST();
if(interval > 20 && r->request.version == HTTP_1_0) {
fw_set_mac_temporary(mac, 0);
http_send_apple_redirect(r, redir_url);
} else if(o_client->hit_counts > 2 && r->request.version == HTTP_1_0)
http_send_apple_redirect(r, redir_url);
else {
http_send_redirect_to_auth(r, redir_url, "Redirect to login page");
}
} else {
o_client->client_type = 1;
UNLOCK_OFFLINE_CLIENT_LIST();
http_relay_wisper(r);
}
return 1;
}
return 0;
}
/** The 404 handler is also responsible for redirecting to the auth server */
void
http_callback_404(httpd * webserver, request * r, int error_code)
{
char tmp_url[MAX_BUF], *url, *mac;
s_config *config = config_get_config();
t_auth_serv *auth_server = get_auth_server();
memset(tmp_url, 0, sizeof(tmp_url));
/*
* XXX Note the code below assumes that the client's request is a plain
* http request to a standard port. At any rate, this handler is called only
* if the internet/auth server is down so it's not a huge loss, but still.
*/
snprintf(tmp_url, (sizeof(tmp_url) - 1), "http://%s%s%s%s",
r->request.host, r->request.path, r->request.query[0] ? "?" : "", r->request.query);
url = httpdUrlEncode(tmp_url);
if (!is_online()) {
/* The internet connection is down at the moment - apologize and do not redirect anywhere */
char *buf;
safe_asprintf(&buf,
"<p>We apologize, but it seems that the internet connection that powers this hotspot is temporarily unavailable.</p>"
"<p>If at all possible, please notify the owners of this hotspot that the internet connection is out of service.</p>"
"<p>The maintainers of this network are aware of this disruption. We hope that this situation will be resolved soon.</p>"
"<p>In a while please <a href='%s'>click here</a> to try your request again.</p>", tmp_url);
send_http_page(r, "Uh oh! Internet access unavailable!", buf);
free(buf);
debug(LOG_INFO, "Sent %s an apology since I am not online - no point sending them to auth server",
r->clientAddr);
} else if (!is_auth_online()) {
/* The auth server is down at the moment - apologize and do not redirect anywhere */
char *buf;
safe_asprintf(&buf,
"<p>We apologize, but it seems that we are currently unable to re-direct you to the login screen.</p>"
"<p>The maintainers of this network are aware of this disruption. We hope that this situation will be resolved soon.</p>"
"<p>In a couple of minutes please <a href='%s'>click here</a> to try your request again.</p>",
tmp_url);
send_http_page(r, "Uh oh! Login screen unavailable!", buf);
free(buf);
debug(LOG_INFO, "Sent %s an apology since auth server not online - no point sending them to auth server",
r->clientAddr);
} else {
/* Re-direct them to auth server */
char *urlFragment;
if (!(mac = arp_get(r->clientAddr))) {
/* We could not get their MAC address */
debug(LOG_INFO, "Failed to retrieve MAC address for ip %s, so not putting in the login request",
r->clientAddr);
safe_asprintf(&urlFragment, "%sgw_address=%s&gw_port=%d&gw_id=%s&ip=%s&url=%s",
auth_server->authserv_login_script_path_fragment, config->gw_address, config->gw_port,
config->gw_id, r->clientAddr, url);
} else {
debug(LOG_INFO, "Got client MAC address for ip %s: %s", r->clientAddr, mac);
safe_asprintf(&urlFragment, "%sgw_address=%s&gw_port=%d&gw_id=%s&ip=%s&mac=%s&url=%s",
auth_server->authserv_login_script_path_fragment,
config->gw_address, config->gw_port, config->gw_id, r->clientAddr, mac, url);
free(mac);
}
// if host is not in whitelist, maybe not in conf or domain'IP changed, it will go to here.
debug(LOG_INFO, "Check host %s is in whitelist or not", r->request.host); // e.g. www.example.com
t_firewall_rule *rule;
//e.g. example.com is in whitelist
// if request http://www.example.com/, it's not equal example.com.
for (rule = get_ruleset("global"); rule != NULL; rule = rule->next) {
debug(LOG_INFO, "rule mask %s", rule->mask);
if (strstr(r->request.host, rule->mask) == NULL) {
debug(LOG_INFO, "host %s is not in %s, continue", r->request.host, rule->mask);
continue;
}
int host_length = strlen(r->request.host);
int mask_length = strlen(rule->mask);
if (host_length != mask_length) {
char prefix[1024] = { 0 };
// must be *.example.com, if not have ".", maybe Phishing. e.g. phishingexample.com
strncpy(prefix, r->request.host, host_length - mask_length - 1); // e.g. www
strcat(prefix, "."); // www.
strcat(prefix, rule->mask); // www.example.com
if (strcasecmp(r->request.host, prefix) == 0) {
debug(LOG_INFO, "allow subdomain");
fw_allow_host(r->request.host);
http_send_redirect(r, tmp_url, "allow subdomain");
free(url);
free(urlFragment);
return;
}
} else {
// e.g. "example.com" is in conf, so it had been parse to IP and added into "iptables allow" when wifidog start. but then its' A record(IP) changed, it will go to here.
debug(LOG_INFO, "allow domain again, because IP changed");
fw_allow_host(r->request.host);
http_send_redirect(r, tmp_url, "allow domain");
free(url);
free(urlFragment);
return;
}
}
debug(LOG_INFO, "Captured %s requesting [%s] and re-directing them to login page", r->clientAddr, url);
http_send_redirect_to_auth(r, urlFragment, "Redirect to login page");
free(urlFragment);
}
free(url);
}
/** The 404 handler is also responsible for redirecting to the auth server */
void
http_callback_404(httpd *webserver, request *r)
{
char tmp_url[MAX_BUF],
*url,
*mac;
s_config *config = config_get_config();
t_auth_serv *auth_server = get_auth_server();
memset(tmp_url, 0, sizeof(tmp_url));
/*
* XXX Note the code below assumes that the client's request is a plain
* http request to a standard port. At any rate, this handler is called only
* if the internet/auth server is down so it's not a huge loss, but still.
*/
snprintf(tmp_url, (sizeof(tmp_url) - 1), "http://%s%s%s%s",
r->request.host,
r->request.path,
r->request.query[0] ? "?" : "",
r->request.query);
url = httpdUrlEncode(tmp_url);
if (!is_online()) {
/* The internet connection is down at the moment - apologize and do not redirect anywhere */
char * buf;
safe_asprintf(&buf,
"<p>We apologize, but it seems that the internet connection that powers this hotspot is temporarily unavailable.</p>"
"<p>If at all possible, please notify the owners of this hotspot that the internet connection is out of service.</p>"
"<p>The maintainers of this network are aware of this disruption. We hope that this situation will be resolved soon.</p>"
"<p>In a while please <a href='%s'>click here</a> to try your request again.</p>", tmp_url);
send_http_page(r, "Uh oh! Internet access unavailable!", buf);
free(buf);
debug(LOG_INFO, "Sent %s an apology since I am not online - no point sending them to auth server", r->clientAddr);
}
else if (!is_auth_online()) {
/* The auth server is down at the moment - apologize and do not redirect anywhere */
char * buf;
safe_asprintf(&buf,
"<p>We apologize, but it seems that we are currently unable to re-direct you to the login screen.</p>"
"<p>The maintainers of this network are aware of this disruption. We hope that this situation will be resolved soon.</p>"
"<p>In a couple of minutes please <a href='%s'>click here</a> to try your request again.</p>", tmp_url);
send_http_page(r, "Uh oh! Login screen unavailable!", buf);
free(buf);
debug(LOG_INFO, "Sent %s an apology since auth server not online - no point sending them to auth server", r->clientAddr);
}
else {
//hector add 2014/3/18
get_oauth_iplist();
fw_set_oauthservers();
//hector end
/* Re-direct them to auth server */
char *urlFragment;
if (!(mac = arp_get(r->clientAddr))) {
/* We could not get their MAC address */
debug(LOG_INFO, "Failed to retrieve MAC address for ip %s, so not putting in the login request", r->clientAddr);
safe_asprintf(&urlFragment, "%sgw_address=%s&gw_port=%d&gw_id=%s&url=%s",
auth_server->authserv_login_script_path_fragment,
config->gw_address,
config->gw_port,
config->gw_id,
url);
} else {
debug(LOG_INFO, "Got client MAC address for ip %s: %s", r->clientAddr, mac);
safe_asprintf(&urlFragment, "%sgw_address=%s&gw_port=%d&gw_id=%s&mac=%s&url=%s",
auth_server->authserv_login_script_path_fragment,
config->gw_address,
config->gw_port,
config->gw_id,
mac,
url);
}
debug(LOG_INFO, "Captured %s requesting [%s] and re-directing them to login page", r->clientAddr, url);
http_send_redirect_to_auth(r, urlFragment, "Redirect to login page");
free(urlFragment);
}
free(url);
}
void
http_callback_auth(httpd *webserver, request *r)
{
t_client *client;
httpVar * token;
char *mac;
httpVar *logout = httpdGetVariableByName(r, "logout");
if ((token = httpdGetVariableByName(r, "token"))) {
/* They supplied variable "token" */
if (!(mac = arp_get(r->clientAddr))) {
/* We could not get their MAC address */
debug(LOG_ERR, "Failed to retrieve MAC address for ip %s", r->clientAddr);
send_http_page(r, "WiFiDog Error", "Failed to retrieve your MAC address");
} else {
/* We have their MAC address */
LOCK_CLIENT_LIST();
if ((client = client_list_find(r->clientAddr, mac)) == NULL) {
debug(LOG_DEBUG, "New client for %s", r->clientAddr);
client_list_append(r->clientAddr, mac, token->value);
} else if (logout) {
t_authresponse authresponse;
s_config *config = config_get_config();
unsigned long long incoming = client->counters.incoming;
unsigned long long outgoing = client->counters.outgoing;
char *ip = safe_strdup(client->ip);
char *urlFragment = NULL;
t_auth_serv *auth_server = get_auth_server();
fw_deny(client->ip, client->mac, client->fw_connection_state);
client_list_delete(client);
debug(LOG_DEBUG, "Got logout from %s", client->ip);
/* Advertise the logout if we have an auth server */
if (config->auth_servers != NULL) {
UNLOCK_CLIENT_LIST();
auth_server_request(&authresponse, REQUEST_TYPE_LOGOUT, ip, mac, token->value,
incoming, outgoing);
LOCK_CLIENT_LIST();
/* Re-direct them to auth server */
debug(LOG_INFO, "Got manual logout from client ip %s, mac %s, token %s"
"- redirecting them to logout message", client->ip, client->mac, client->token);
safe_asprintf(&urlFragment, "%smessage=%s",
auth_server->authserv_msg_script_path_fragment,
GATEWAY_MESSAGE_ACCOUNT_LOGGED_OUT
);
http_send_redirect_to_auth(r, urlFragment, "Redirect to logout message");
free(urlFragment);
}
free(ip);
}
else {
debug(LOG_DEBUG, "Client for %s is already in the client list", client->ip);
}
UNLOCK_CLIENT_LIST();
if (!logout) {
authenticate_client(r);
}
free(mac);
}
} else {
/* They did not supply variable "token" */
send_http_page(r, "WiFiDog error", "Invalid token");
}
}
/** Authenticates a single client against the central server and returns when done
* Alters the firewall rules depending on what the auth server says
@param r httpd request struct
*/
void
authenticate_client(request * r)
{
t_client *client, *tmp;
t_authresponse auth_response;
char *token;
httpVar *var;
char *urlFragment = NULL;
s_config *config = NULL;
t_auth_serv *auth_server = NULL;
LOCK_CLIENT_LIST();
client = client_dup(client_list_find_by_ip(r->clientAddr));
UNLOCK_CLIENT_LIST();
if (client == NULL) {
debug(LOG_ERR, "authenticate_client(): Could not find client for %s", r->clientAddr);
return;
}
/* Users could try to log in(so there is a valid token in
* request) even after they have logged in, try to deal with
* this */
if ((var = httpdGetVariableByName(r, "token")) != NULL) {
token = safe_strdup(var->value);
} else {
token = safe_strdup(client->token);
}
/*
* At this point we've released the lock while we do an HTTP request since it could
* take multiple seconds to do and the gateway would effectively be frozen if we
* kept the lock.
*/
auth_server_request(&auth_response, REQUEST_TYPE_LOGIN, client->ip, client->mac, token, 0, 0);
LOCK_CLIENT_LIST();
/* can't trust the client to still exist after n seconds have passed */
tmp = client_list_find_by_client(client);
if (NULL == tmp) {
debug(LOG_ERR, "authenticate_client(): Could not find client node for %s (%s)", client->ip, client->mac);
UNLOCK_CLIENT_LIST();
client_list_destroy(client); /* Free the cloned client */
free(token);
return;
}
client_list_destroy(client); /* Free the cloned client */
client = tmp;
if (strcmp(token, client->token) != 0) {
/* If token changed, save it. */
free(client->token);
client->token = token;
} else {
free(token);
}
/* Prepare some variables we'll need below */
config = config_get_config();
auth_server = get_auth_server();
switch (auth_response.authcode) {
case AUTH_ERROR:
/* Error talking to central server */
debug(LOG_ERR, "Got ERROR from central server authenticating token %s from %s at %s", client->token, client->ip,
client->mac);
send_http_page(r, "Error!", "Error: We did not get a valid answer from the central server");
break;
case AUTH_DENIED:
/* Central server said invalid token */
debug(LOG_INFO,
"Got DENIED from central server authenticating token %s from %s at %s - deleting from firewall and redirecting them to denied message",
client->token, client->ip, client->mac);
fw_deny(client);
safe_asprintf(&urlFragment, "%smessage=%s",
auth_server->authserv_msg_script_path_fragment, GATEWAY_MESSAGE_DENIED);
http_send_redirect_to_auth(r, urlFragment, "Redirect to denied message");
free(urlFragment);
break;
case AUTH_VALIDATION:
/* They just got validated for X minutes to check their email */
debug(LOG_INFO, "Got VALIDATION from central server authenticating token %s from %s at %s"
"- adding to firewall and redirecting them to activate message", client->token, client->ip, client->mac);
fw_allow(client, FW_MARK_PROBATION);
safe_asprintf(&urlFragment, "%smessage=%s",
auth_server->authserv_msg_script_path_fragment, GATEWAY_MESSAGE_ACTIVATE_ACCOUNT);
http_send_redirect_to_auth(r, urlFragment, "Redirect to activate message");
free(urlFragment);
break;
case AUTH_ALLOWED:
/* Logged in successfully as a regular account */
debug(LOG_INFO, "Got ALLOWED from central server authenticating token %s from %s at %s - "
"adding to firewall and redirecting them to portal", client->token, client->ip, client->mac);
fw_allow(client, FW_MARK_KNOWN);
// add by zp
debug(LOG_INFO,"goto fw_allow()...");
served_this_session++;
safe_asprintf(&urlFragment, "%sgw_id=%s", auth_server->authserv_portal_script_path_fragment, config->gw_id);
// modify by zp
http_send_redirect_to_auth(r, urlFragment, "Redirect to portal");
//char * text = "advertisement";
//http_send_redirect_to_advertisement(r, urlFragment, text);
free(urlFragment);
break;
case AUTH_VALIDATION_FAILED:
/* Client had X minutes to validate account by email and didn't = too late */
debug(LOG_INFO, "Got VALIDATION_FAILED from central server authenticating token %s from %s at %s "
"- redirecting them to failed_validation message", client->token, client->ip, client->mac);
safe_asprintf(&urlFragment, "%smessage=%s",
auth_server->authserv_msg_script_path_fragment, GATEWAY_MESSAGE_ACCOUNT_VALIDATION_FAILED);
http_send_redirect_to_auth(r, urlFragment, "Redirect to failed validation message");
free(urlFragment);
break;
default:
debug(LOG_WARNING,
"I don't know what the validation code %d means for token %s from %s at %s - sending error message",
auth_response.authcode, client->token, client->ip, client->mac);
send_http_page(r, "Internal Error", "We can not validate your request at this time");
break;
}
UNLOCK_CLIENT_LIST();
return;
}
/** Authenticates a single client against the central server and returns when done
* Alters the firewall rules depending on what the auth server says
@param r httpd request struct
*/
void
authenticate_client(request *r, char *gw_id)
{
t_client *client;
t_authresponse auth_response;
char *mac,
*token;
char *urlFragment = NULL;
s_config *config = NULL;
t_auth_serv *auth_server = NULL;
LOCK_CLIENT_LIST();
client = client_list_find_by_ip(r->clientAddr);
if (client == NULL) {
debug(LOG_ERR, "Could not find client for %s", r->clientAddr);
UNLOCK_CLIENT_LIST();
return;
}
mac = safe_strdup(client->mac);
token = safe_strdup(client->token);
UNLOCK_CLIENT_LIST();
/*
* At this point we've released the lock while we do an HTTP request since it could
* take multiple seconds to do and the gateway would effectively be frozen if we
* kept the lock.
*/
auth_server_request(&auth_response, REQUEST_TYPE_LOGIN, r->clientAddr, mac, token, 0, 0, gw_id);
LOCK_CLIENT_LIST();
/* can't trust the client to still exist after n seconds have passed */
client = client_list_find(r->clientAddr, mac);
if (client == NULL) {
debug(LOG_ERR, "Could not find client node for %s (%s)", r->clientAddr, mac);
UNLOCK_CLIENT_LIST();
free(token);
free(mac);
return;
}
free(token);
free(mac);
/* Prepare some variables we'll need below */
config = config_get_config();
auth_server = get_auth_server();
switch(auth_response.authcode) {
case AUTH_ERROR:
/* Error talking to central server */
debug(LOG_ERR, "Got %d from central server authenticating token %s from %s at %s", auth_response, client->token, client->ip, client->mac);
send_http_page(r, "Error!", "Error: We did not get a valid answer from the central server");
break;
case AUTH_DENIED:
/* Central server said invalid token */
debug(LOG_INFO, "Got DENIED from central server authenticating token %s from %s at %s - redirecting them to denied message", client->token, client->ip, client->mac);
safe_asprintf(&urlFragment, "%smessage=%s",
auth_server->authserv_msg_script_path_fragment,
GATEWAY_MESSAGE_DENIED
);
http_send_redirect_to_auth(r, urlFragment, "Redirect to portal", gw_id);
//set connection logged out (xperimental)
//snprintf(,client->token, client->ip, client->mac)
/*{
char mysqlCmd[256];
sprintf(mysqlCmd,"echo \"DELETE FROM connections WHERE token='%s';\"|mysql -uauthpuppy -pauthpuppydev authpuppy > /tmp/wifidog_deauth_mysql_result",client->token);
debug(LOG_WARNING,"issuing this would help: %s",mysqlCmd);
//system(mysqlCmd);//kills wifidog somehow *g
}*/
free(urlFragment);
//for race conditions, remove from firewall
fw_deny(client->ip, client->mac, client->fw_connection_state);
//experimental delete client from list
client_list_delete(client);
break;
case AUTH_VALIDATION:
/* They just got validated for X minutes to check their email */
debug(LOG_INFO, "Got VALIDATION from central server authenticating token %s from %s at %s"
"- adding to firewall and redirecting them to activate message", client->token,
client->ip, client->mac);
client->fw_connection_state = FW_MARK_PROBATION;
fw_allow(client->ip, client->mac, FW_MARK_PROBATION);
safe_asprintf(&urlFragment, "%smessage=%s",
auth_server->authserv_msg_script_path_fragment,
GATEWAY_MESSAGE_ACTIVATE_ACCOUNT
);
http_send_redirect_to_auth(r, urlFragment, "Redirect to activate message", gw_id);
free(urlFragment);
break;
case AUTH_ALLOWED:
/* Logged in successfully as a regular account */
debug(LOG_INFO, "Got ALLOWED from central server authenticating token %s from %s at %s - "
"adding to firewall and redirecting them to portal", client->token, client->ip, client->mac);
client->fw_connection_state = FW_MARK_KNOWN;
fw_allow(client->ip, client->mac, FW_MARK_KNOWN);
served_this_session++;
safe_asprintf(&urlFragment, "%sgw_id=%s",
auth_server->authserv_portal_script_path_fragment,
gw_id
);
http_send_redirect_to_auth(r, urlFragment, "Redirect to portal", gw_id);
free(urlFragment);
break;
case AUTH_VALIDATION_FAILED:
/* Client had X minutes to validate account by email and didn't = too late */
debug(LOG_INFO, "Got VALIDATION_FAILED from central server authenticating token %s from %s at %s "
"- redirecting them to failed_validation message", client->token, client->ip, client->mac);
safe_asprintf(&urlFragment, "%smessage=%s",
auth_server->authserv_msg_script_path_fragment,
GATEWAY_MESSAGE_ACCOUNT_VALIDATION_FAILED
);
http_send_redirect_to_auth(r, urlFragment, "Redirect to failed validation message", gw_id);
free(urlFragment);
break;
default:
debug(LOG_WARNING, "I don't know what the validation code %d means for token %s from %s at %s - sending error message", auth_response.authcode, client->token, client->ip, client->mac);
send_http_page(r, "Internal Error", "We can not validate your request at this time");
break;
}
UNLOCK_CLIENT_LIST();
return;
}
