/**
* @brief encode originurl and redirect the client to the splash page
* @param connection
* @param client
* @param originurl
* @return
*/
static int encode_and_redirect_to_splashpage(struct MHD_Connection *connection, const char *originurl)
{
char *splashpageurl = NULL;
char encoded[2048];
int ret;
s_config *config = config_get_config();
memset(encoded, 0, sizeof(encoded));
if (originurl) {
if (uh_urlencode(encoded, 2048, originurl, strlen(originurl)) == -1) {
debug(LOG_WARNING, "could not encode url");
} else {
debug(LOG_DEBUG, "originurl: %s", originurl);
}
}
if (encoded[0])
safe_asprintf(&splashpageurl, "http://%s:%u%s?redir=%s", config->gw_address , config->gw_port, "/splash.html", encoded);
else
safe_asprintf(&splashpageurl, "http://%s:%u%s", config->gw_address , config->gw_port, "/splash.html");
debug(LOG_DEBUG, "splashpageurl: %s", splashpageurl);
ret = send_redirect_temp(connection, splashpageurl);
free(splashpageurl);
return ret;
}
/**
* @brief show_splashpage is called when the client clicked on Ok as well when the client doesn't know us yet.
* @param connection
* @param client
* @return
*/
static int show_splashpage(struct MHD_Connection *connection, t_client *client)
{
struct MHD_Response *response;
struct templater templor;
s_config *config = config_get_config();
int ret = -1;
char filename[PATH_MAX];
const char *mimetype;
int size = 0, bytes = 0;
int splashpage_fd;
char *splashpage_result;
char *splashpage_tmpl;
snprintf(filename, PATH_MAX, "%s/%s",config->webroot ,config->splashpage);
splashpage_fd = open(filename, O_RDONLY);
if (splashpage_fd < 0)
return send_error(connection, 404);
mimetype = lookup_mimetype(filename);
/* input size */
size = lseek(splashpage_fd, 0, SEEK_END);
lseek(splashpage_fd, 0, SEEK_SET);
/* we TMPLVAR_SIZE for template variables */
splashpage_tmpl = calloc(1, size);
splashpage_result = calloc(1, size + TMPLVAR_SIZE);
while (bytes < size) {
ret = read(splashpage_fd, splashpage_tmpl+bytes, size-bytes);
if (ret < 0) {
free(splashpage_result);
free(splashpage_tmpl);
close(splashpage_fd);
return send_error(connection, 503);
}
bytes += ret;
}
char *uptime = get_uptime_string();
char *nclients = NULL;
char *maxclients = NULL;
char *denyaction = NULL;
char *authaction = NULL;
char *authtarget = NULL;
const char *redirect_url = NULL;
char redirect_url_encoded[2048];
char *imagesdir = NULL;
char *pagesdir = NULL;
memset(redirect_url_encoded, 0, sizeof(redirect_url_encoded));
redirect_url = get_redirect_url(connection);
if (redirect_url) {
uh_urlencode(redirect_url_encoded, sizeof(redirect_url_encoded), redirect_url, strlen(redirect_url));
}
safe_asprintf(&nclients, "%d", get_client_list_length());
safe_asprintf(&maxclients, "%d", config->maxclients);
safe_asprintf(&denyaction, "http://%s:%d/%s/", config->gw_address, config->gw_port, config->denydir);
safe_asprintf(&authaction, "http://%s:%d/%s/", config->gw_address, config->gw_port, config->authdir);
safe_asprintf(&authtarget, "http://%s:%d/%s/?token=%s&redir=%s", config->gw_address, config->gw_port, config->authdir, client->token, redirect_url_encoded);
safe_asprintf(&authaction, "http://%s:%d/%s/", config->gw_address, config->gw_port, config->authdir);
safe_asprintf(&pagesdir, "/%s", config->pagesdir);
safe_asprintf(&imagesdir, "/%s", config->imagesdir);
tmpl_init_templor(&templor);
tmpl_set_variable(&templor, "authaction", authaction);
tmpl_set_variable(&templor, "authtarget", authtarget);
tmpl_set_variable(&templor, "clientip", client->ip);
tmpl_set_variable(&templor, "clientmac", client->mac);
// tmpl_set_variable(&templor, "content", VERSION);
tmpl_set_variable(&templor, "denyaction", denyaction);
tmpl_set_variable(&templor, "error_msg", "");
tmpl_set_variable(&templor, "gatewaymac", config->gw_mac);
tmpl_set_variable(&templor, "gatewayname", config->gw_name);
tmpl_set_variable(&templor, "imagesdir", imagesdir);
tmpl_set_variable(&templor, "pagesdir", pagesdir);
tmpl_set_variable(&templor, "maxclients", maxclients);
tmpl_set_variable(&templor, "nclients", nclients);
tmpl_set_variable(&templor, "redir", redirect_url);
tmpl_set_variable(&templor, "tok", client->token);
tmpl_set_variable(&templor, "uptime", uptime);
tmpl_set_variable(&templor, "version", VERSION);
tmpl_parse(&templor, splashpage_result, size + TMPLVAR_SIZE, splashpage_tmpl, size);
free(authaction);
free(denyaction);
free(maxclients);
free(nclients);
free(uptime);
free(splashpage_tmpl);
free(imagesdir);
response = MHD_create_response_from_buffer(strlen(splashpage_result), (void *)splashpage_result, MHD_RESPMEM_MUST_FREE);
if (!response) {
close(splashpage_fd);
return send_error(connection, 503);
}
MHD_add_response_header(response, "Content-Type", mimetype);
ret = MHD_queue_response(connection, MHD_HTTP_OK, response);
MHD_destroy_response(response);
close(splashpage_fd);
return ret;
}
