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/*
* Copyright (C) 2015-2020 "IoT.bzh"
* Author "Fulup Ar Foll"
* Author José Bollo <jose.bollo@iot.bzh>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#define _GNU_SOURCE
#include <stdlib.h>
#include <string.h>
#include <microhttpd.h>
#include "afb-context.h"
#include "afb-hreq.h"
#include "afb-apiset.h"
#include "afb-session.h"
#include "afb-websock.h"
int afb_hswitch_apis(struct afb_hreq *hreq, void *data)
{
const char *api, *verb, *i;
size_t lenapi, lenverb;
struct afb_apiset *apiset = data;
/* api is the first hierarchical item */
i = hreq->tail;
while (*i == '/')
i++;
if (!*i)
return 0; /* no API */
api = i;
/* search end of the api and get its length */
while (*++i && *i != '/');
lenapi = (size_t)(i - api);
/* search the verb */
while (*i == '/')
i++;
if (!*i)
return 0; /* no verb */
verb = i;
/* get the verb length */
while (*++i);
lenverb = (size_t)(i - verb);
/* found api + verb so process the call */
afb_hreq_call(hreq, apiset, api, lenapi, verb, lenverb);
return 1;
}
int afb_hswitch_one_page_api_redirect(struct afb_hreq *hreq, void *data)
{
size_t plen;
char *url;
if (hreq->lentail >= 2 && hreq->tail[1] == '#')
return 0;
/*
* Here we have for example:
* url = "/pre/dir/page" lenurl = 13
* tail = "/dir/page" lentail = 9
*
* We will produce "/pre/#!dir/page"
*
* Let compute plen that include the / at end (for "/pre/")
*/
plen = hreq->lenurl - hreq->lentail + 1;
url = alloca(hreq->lenurl + 3);
memcpy(url, hreq->url, plen);
url[plen++] = '#';
url[plen++] = '!';
memcpy(&url[plen], &hreq->tail[1], hreq->lentail);
afb_hreq_redirect_to(hreq, url, 1);
return 1;
}
int afb_hswitch_websocket_switch(struct afb_hreq *hreq, void *data)
{
struct afb_apiset *apiset = data;
if (hreq->lentail != 0)
return 0;
if (afb_hreq_init_context(hreq) < 0) {
afb_hreq_reply_error(hreq, MHD_HTTP_INTERNAL_SERVER_ERROR);
return 1;
}
return afb_websock_check_upgrade(hreq, apiset);
}
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