static int check_token_is_valid(struct MHD_Connection *connection, t_client *client)
{
/* token check */
struct collect_query_key query_key = { .key = "token" };
MHD_get_connection_values(connection, MHD_GET_ARGUMENT_KIND, &collect_query_key, &query_key);
/* token not found in query string */
if (!query_key.value)
return 0;
/* token doesn't match */
if (strcmp(client->token, query_key.value))
return 0;
return 1;
}
/**
* @brief try_to_authenticate
* @param connection
* @param client
* @param host
* @param url
* @return
*/
static int try_to_authenticate(struct MHD_Connection *connection, t_client *client, const char *host, const char *url)
{
/* a successful auth looks like
* http://192.168.42.1:2050/nodogsplash_auth/?redir=http%3A%2F%2Fberlin.freifunk.net%2F&tok=94c4cdd2
* when authaction -> http://192.168.42.1:2050/nodogsplash_auth/
*/
s_config *config = config_get_config();
/* we are checking here for the second '/' of /denydir/ */
if (check_authdir_match(url, config->authdir)) {
/* matched to authdir */
if (check_token_is_valid(connection, client)) {
return 1; /* valid token */
}
} else if (check_authdir_match(url, config->denydir)) {
/* matched to deauth */
/* TODO: do we need denydir? */
return 0;
}
return 0;
}
static int check_token_is_valid(struct MHD_Connection *connection, t_client *client)
{
/* token check */
struct collect_query_key token_key = { .key = "token" };
struct collect_query_key tok_key = { .key = "tok" };
MHD_get_connection_values(connection, MHD_GET_ARGUMENT_KIND, &collect_query_key, &token_key);
MHD_get_connection_values(connection, MHD_GET_ARGUMENT_KIND, &collect_query_key, &tok_key);
/* token not found in query string */
if (!token_key.value && !tok_key.value)
return 0;
if (token_key.value && !strcmp(client->token, token_key.value))
return 1;
if (tok_key.value && !strcmp(client->token, tok_key.value))
return 1;
return 0;
}
/**
* @brief try_to_authenticate
* @param connection
* @param client
* @param host
* @param url
* @return
*/
static int try_to_authenticate(struct MHD_Connection *connection, t_client *client, const char *host, const char *url)
{
/* a successful auth looks like
* http://192.168.42.1:2050/nodogsplash_auth/?redir=http%3A%2F%2Fberlin.freifunk.net%2F&tok=94c4cdd2
* when authaction -> http://192.168.42.1:2050/nodogsplash_auth/
*/
s_config *config = config_get_config();
/* we are checking here for the second '/' of /denydir/ */
if (check_authdir_match(url, config->authdir)) {
/* matched to authdir */
if (check_token_is_valid(connection, client)) {
return 1; /* valid token */
}
} else if (check_authdir_match(url, config->denydir)) {
/* matched to deauth */
/* TODO: do we need denydir? */
return 0;
}
return 0;
}
/**
* @brief authenticate the client and redirect them
* @param connection
* @param ip_addr - needs to be freed
* @param mac - needs to be freed
* @param redirect_url - redirect the client to this url
* @return
*/
static int authenticate_client(struct MHD_Connection *connection,
const char *ip_addr,
const char *mac,
const char *redirect_url,
t_client *client)
{
/* TODO: handle redirect_url == NULL */
auth_client_action(ip_addr, mac, AUTH_MAKE_AUTHENTICATED);
if (redirect_url)
return send_redirect_temp(connection, redirect_url);
else
return send_error(connection, 200);
}