experiments/clixon
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

* To configure native mode use: configure --with-restconf=native, changed from: configure --with-restconf=evhtp

Browse source
This commit is contained in:
Olof hagsand 2021-04-06 08:48:45 +02:00
parent d874a696f7
commit d8be601606
22 changed files with 76 additions and 70 deletions
Download patch file Download diff file Expand all files Collapse all files

202
apps/restconf/restconf_api_native.c Normal file
View file

@ -0,0 +1,202 @@
/*
*
***** BEGIN LICENSE BLOCK *****
Copyright (C) 2009-2019 Olof Hagsand
Copyright (C) 2020-2021 Olof Hagsand and Rubicon Communications, LLC(Netgate)
This file is part of CLIXON.
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.
Alternatively, the contents of this file may be used under the terms of
the GNU General Public License Version 3 or later (the "GPL"),
in which case the provisions of the GPL are applicable instead
of those above. If you wish to allow use of your version of this file only
under the terms of the GPL, and not to allow others to
use your version of this file under the terms of Apache License version 2,
indicate your decision by deleting the provisions above and replace them with
the notice and other provisions required by the GPL. If you do not delete
the provisions above, a recipient may use your version of this file under
the terms of any one of the Apache License version 2 or the GPL.
***** END LICENSE BLOCK *****
* Concrete functions for openssl of the
* Virtual clixon restconf API functions.
* @see restconf_api.h for virtual API
*/
#ifdef HAVE_CONFIG_H
#include "clixon_config.h" /* generated by config & autoconf */
#endif
#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <openssl/ssl.h>
#include <openssl/err.h>
/* evhtp */
#define EVHTP_DISABLE_REGEX
#define EVHTP_DISABLE_EVTHR
#define EVHTP_EXPORT
#include <evhtp/evhtp.h>
/* cligen */
#include <cligen/cligen.h>
/* clicon */
#include <clixon/clixon.h>
#include "restconf_lib.h"
#include "restconf_api.h" /* Virtual api */
/*! Add HTTP header field name and value to reply, evhtp specific
* @param[in] req Evhtp http request handle
* @param[in] name HTTP header field name
* @param[in] vfmt HTTP header field value format string w variable parameter
* @see eg RFC 7230
*/
int
restconf_reply_header(void *req0,
const char *name,
const char *vfmt,
...)
{
evhtp_request_t *req = (evhtp_request_t *)req0;
int retval = -1;
size_t vlen;
char *value = NULL;
va_list ap;
evhtp_header_t *evhdr;
if (req == NULL || name == NULL || vfmt == NULL){
clicon_err(OE_CFG, EINVAL, "req, name or value is NULL");
return -1;
}
va_start(ap, vfmt);
vlen = vsnprintf(NULL, 0, vfmt, ap);
va_end(ap);
/* allocate value string exactly fitting */
if ((value = malloc(vlen+1)) == NULL){
clicon_err(OE_UNIX, errno, "malloc");
goto done;
}
/* second round: compute actual value */
va_start(ap, vfmt);
if (vsnprintf(value, vlen+1, vfmt, ap) < 0){
clicon_err(OE_UNIX, errno, "vsnprintf");
va_end(ap);
goto done;
}
va_end(ap);
if ((evhdr = evhtp_header_new(name, value, 0, 1)) == NULL){ /* 1: free after use */
clicon_err(OE_CFG, errno, "evhttp_header_new");
goto done;
}
evhtp_headers_add_header(req->headers_out, evhdr);
retval = 0;
done:
if (value)
free(value);
return retval;
}
/*! Send HTTP reply with potential message body
* @param[in] req Evhtp http request handle
* @param[in] cb Body as a cbuf, send if
*
* Prerequisites: status code set, headers given, body if wanted set
*/
int
restconf_reply_send(void *req0,
int code,
cbuf *cb)
{
evhtp_request_t *req = (evhtp_request_t *)req0;
int retval = -1;
const char *reason_phrase;
evhtp_connection_t *conn;
struct evbuffer *eb = NULL;
req->status = code;
if ((reason_phrase = restconf_code2reason(code)) == NULL)
reason_phrase="";
#if 0 /* XXX remove status header för evhtp? */
if (restconf_reply_header(req, "Status", "%d %s", code, reason_phrase) < 0)
goto done;
#endif
if ((conn = evhtp_request_get_connection(req)) == NULL){
clicon_err(OE_DAEMON, EFAULT, "evhtp_request_get_connection");
goto done;
}
/* If body, add a content-length header */
if (cb != NULL && cbuf_len(cb)){
cprintf(cb, "\r\n");
if (restconf_reply_header(req, "Content-Length", "%d", cbuf_len(cb)) < 0)
goto done;
}
evhtp_send_reply(req, req->status);
/* Write a body if cbuf is nonzero */
if (cb != NULL && cbuf_len(cb)){
/* Suboptimal, copy from cbuf to evbuffer */
if ((eb = evbuffer_new()) == NULL){
clicon_err(OE_RESTCONF, errno, "evbuffer_new");
goto done;
}
if (evbuffer_add(eb, cbuf_get(cb), cbuf_len(cb)) < 0){
clicon_err(OE_CFG, errno, "evbuffer_add");
goto done;
}
evhtp_send_reply_body(req, eb); /* conn->bev = eb, body is different */
}
evhtp_send_reply_end(req); /* just flag finished */
retval = 0;
done:
if (eb)
evhtp_safe_free(eb, evbuffer_free);
return retval;
}
/*! get input data
* @param[in] req Fastcgi request handle
* @note Pulls up an event buffer and then copies it to a cbuf. This is not efficient.
*/
cbuf *
restconf_get_indata(void *req0)
{
evhtp_request_t *req = (evhtp_request_t *)req0;
cbuf *cb = NULL;
size_t len;
unsigned char *buf;
if ((cb = cbuf_new()) == NULL)
return NULL;
len = evbuffer_get_length(req->buffer_in);
if (len > 0){
if ((buf = evbuffer_pullup(req->buffer_in, len)) == NULL){
clicon_err(OE_CFG, errno, "evbuffer_pullup");
return NULL;
}
/* Note the pullup may not be null-terminated */
cbuf_append_buf(cb, buf, len);
}
return cb;
}