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/*
* Copyright (c) 2015 DeNA Co., Ltd., Kazuho Oku
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*/
#include <stdlib.h>
#include "h2o.h"
#define MODULE_NAME "lib/handler/redirect.c"
struct st_h2o_redirect_handler_t {
h2o_handler_t super;
int internal;
int status;
h2o_iovec_t prefix;
};
static void on_dispose(h2o_handler_t *_self)
{
h2o_redirect_handler_t *self = (void *)_self;
free(self->prefix.base);
}
static void redirect_internally(h2o_redirect_handler_t *self, h2o_req_t *req, h2o_iovec_t dest)
{
h2o_iovec_t method;
h2o_url_t input, resolved;
/* resolve the URL */
if (h2o_url_parse_relative(dest.base, dest.len, &input) != 0) {
h2o_req_log_error(req, MODULE_NAME, "invalid destination:%.*s", (int)dest.len, dest.base);
goto SendInternalError;
}
if (input.scheme != NULL && input.authority.base != NULL) {
resolved = input;
} else {
h2o_url_t base;
/* we MUST to set authority to that of hostconf, or internal redirect might create a TCP connection */
if (h2o_url_init(&base, req->scheme, req->hostconf->authority.hostport, req->path) != 0) {
h2o_req_log_error(req, MODULE_NAME, "failed to parse current authority:%.*s", (int)req->authority.len,
req->authority.base);
goto SendInternalError;
}
h2o_url_resolve(&req->pool, &base, &input, &resolved);
}
/* determine the method */
switch (self->status) {
case 307:
case 308:
method = req->method;
break;
default:
method = h2o_iovec_init(H2O_STRLIT("GET"));
req->entity = (h2o_iovec_t){NULL};
break;
}
h2o_reprocess_request_deferred(req, method, resolved.scheme, resolved.authority, resolved.path, NULL, 1);
return;
SendInternalError:
h2o_send_error_503(req, "Internal Server Error", "internal server error", 0);
}
static int on_req(h2o_handler_t *_self, h2o_req_t *req)
{
h2o_redirect_handler_t *self = (void *)_self;
h2o_iovec_t dest = h2o_build_destination(req, self->prefix.base, self->prefix.len, 1);
/* redirect */
if (self->internal) {
redirect_internally(self, req, dest);
} else {
h2o_send_redirect(req, self->status, "Redirected", dest.base, dest.len);
}
return 0;
}
h2o_redirect_handler_t *h2o_redirect_register(h2o_pathconf_t *pathconf, int internal, int status, const char *prefix)
{
h2o_redirect_handler_t *self = (void *)h2o_create_handler(pathconf, sizeof(*self));
self->super.dispose = on_dispose;
self->super.on_req = on_req;
self->internal = internal;
self->status = status;
self->prefix = h2o_strdup(NULL, prefix, SIZE_MAX);
return self;
}
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