/* libquvi
* Copyright (C) 2012 Toni Gundogdu <legatvs@gmail.com>
*
* This file is part of libquvi <http://quvi.sourceforge.net/>.
*
* This library is free software: you can redistribute it and/or
* modify it under the terms of the GNU Affero General Public
* License as published by the Free Software Foundation, either
* version 3 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General
* Public License along with this library. If not, see
* <http://www.gnu.org/licenses/>.
*/
#include "config.h"
#include <lauxlib.h>
#include <lualib.h>
#include <glib.h>
#include "quvi.h"
/* -- */
#include "_quvi_s.h"
#include "_quvi_media_s.h"
/* -- */
#include "lua/load_util_script.h"
#include "lua/setfield.h"
#include "lua/def.h"
static const gchar script_fname[]= "resolve_redirections.lua";
static const gchar script_func[] = "resolve_redirections";
/* Resolve URL redirections with exception rules. */
gchar *l_exec_util_resolve_redirections(_quvi_t q, const gchar *url)
{
lua_State *l;
gchar *r;
q->status.rc = l_load_util_script(q, script_fname, script_func);
if (quvi_ok(q) == QUVI_FALSE)
return (NULL);
l = q->handle.lua;
l_setfield_s(l, US_INPUT_URL, url, -1); /* Set as qargs.input_url */
/*
* 1=qargs [qargs: set in l_load_util_script]
* 1=returns a string
*/
if (lua_pcall(l, 1, 1, 0))
{
g_string_assign(q->status.errmsg, lua_tostring(l, -1));
/* Keep error code if it was set by a callback: quvi.resolve
* calling the network callback responsible for resolving URL
* redirections. The error is most likely a network error. */
if (q->status.rc != QUVI_ERROR_CALLBACK)
q->status.rc = QUVI_ERROR_SCRIPT;
return (NULL);
}
r = NULL;
if (lua_isstring(l, -1))
{
const gchar *s = lua_tostring(l, -1);
if (g_strcmp0(s, url) != 0) /* Ignore, unless it is different. */
r = g_strdup(s);
}
else
luaL_error(l, "%s: did not return a string", script_func);
lua_pop(l, 1);
/* quvi.resolve which is called from the script sets q->status.rc . */
return (r);
}
/* vim: set ts=2 sw=2 tw=72 expandtab: */