142 lines
3.7 KiB
Plaintext
142 lines
3.7 KiB
Plaintext
/*
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HTTP-redirect support
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Copyright (C) 1999-2004, Joe Orton <joe@manyfish.co.uk>
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with this library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
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MA 02111-1307, USA
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*/
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#include "config.h"
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#ifdef HAVE_STDLIB_H
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#include <stdlib.h>
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#endif
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#ifdef HAVE_STRING_H
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#include <string.h>
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#endif
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#include "ne_session.h"
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#include "ne_request.h"
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#include "ne_alloc.h"
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#include "ne_uri.h"
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#include "ne_redirect.h"
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#include "ne_i18n.h"
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#include "ne_string.h"
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#define REDIRECT_ID "http://www.webdav.org/neon/hooks/http-redirect"
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struct redirect {
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char *requri;
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int valid; /* non-zero if .uri contains a redirect */
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ne_uri uri;
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ne_session *sess;
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};
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static void
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create(ne_request *req, void *session, const char *method, const char *uri)
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{
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struct redirect *red = session;
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NE_FREE(red->requri);
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red->requri = ne_strdup(uri);
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}
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#define REDIR(n) ((n) == 301 || (n) == 302 || (n) == 303 || \
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(n) == 307)
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static int post_send(ne_request *req, void *private, const ne_status *status)
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{
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struct redirect *red = private;
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const char *location = ne_get_response_header(req, "Location");
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ne_buffer *path = NULL;
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int ret;
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/* Don't do anything for non-redirect status or no Location header. */
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if (!REDIR(status->code) || location == NULL)
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return NE_OK;
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if (strstr(location, "://") == NULL && location[0] != '/') {
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char *pnt;
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path = ne_buffer_create();
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ne_buffer_zappend(path, red->requri);
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pnt = strrchr(path->data, '/');
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if (pnt && pnt[1] != '\0') {
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/* Chop off last path segment. */
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pnt[1] = '\0';
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ne_buffer_altered(path);
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}
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ne_buffer_zappend(path, location);
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location = path->data;
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}
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/* free last uri. */
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ne_uri_free(&red->uri);
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/* Parse the Location header */
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if (ne_uri_parse(location, &red->uri) || red->uri.path == NULL) {
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red->valid = 0;
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ne_set_error(red->sess, _("Could not parse redirect location."));
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ret = NE_ERROR;
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} else {
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/* got a valid redirect. */
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red->valid = 1;
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ret = NE_REDIRECT;
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if (!red->uri.host) {
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/* Not an absoluteURI: breaks 2616 but everybody does it. */
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ne_fill_server_uri(red->sess, &red->uri);
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}
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}
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if (path) ne_buffer_destroy(path);
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return ret;
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}
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static void free_redirect(void *cookie)
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{
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struct redirect *red = cookie;
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ne_uri_free(&red->uri);
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if (red->requri)
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ne_free(red->requri);
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ne_free(red);
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}
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void ne_redirect_register(ne_session *sess)
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{
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struct redirect *red = ne_calloc(sizeof *red);
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red->sess = sess;
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ne_hook_create_request(sess, create, red);
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ne_hook_post_send(sess, post_send, red);
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ne_hook_destroy_session(sess, free_redirect, red);
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ne_set_session_private(sess, REDIRECT_ID, red);
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}
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const ne_uri *ne_redirect_location(ne_session *sess)
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{
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struct redirect *red = ne_get_session_private(sess, REDIRECT_ID);
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if (red && red->valid)
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return &red->uri;
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else
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return NULL;
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}
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