230 lines
6.2 KiB
C
230 lines
6.2 KiB
C
/*
|
|
*
|
|
***** BEGIN LICENSE BLOCK *****
|
|
|
|
Copyright (C) 2009-2020 Olof Hagsand
|
|
Copyright (C) 2020 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 FCGI of the
|
|
* Virtual clixon restconf API functions.
|
|
* @see restconf_api.h for virtual API
|
|
*/
|
|
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
#include <errno.h>
|
|
#include <signal.h>
|
|
#include <syslog.h>
|
|
#include <fcntl.h>
|
|
#include <ctype.h>
|
|
#include <time.h>
|
|
#include <signal.h>
|
|
#include <dlfcn.h>
|
|
#include <sys/param.h>
|
|
#include <sys/time.h>
|
|
#include <sys/wait.h>
|
|
|
|
/* cligen */
|
|
#include <cligen/cligen.h>
|
|
|
|
/* clicon */
|
|
#include <clixon/clixon.h>
|
|
|
|
#include <fcgiapp.h> /* Need to be after clixon_xml-h due to attribute format */
|
|
|
|
#include "restconf_lib.h"
|
|
#include "restconf_api.h" /* Virtual api */
|
|
|
|
|
|
/*! HTTP headers done, if there is a message body coming next
|
|
* @param[in] req Fastcgi request handle
|
|
* @retval body Handle for body handling (in fcgi same as req)
|
|
*
|
|
* HTTP-message = start-line *( header-field CRLF ) CRLF [ message-body ]
|
|
* @see eg RFC 7230
|
|
* XXX may be unecessary (or body start or something)
|
|
*/
|
|
FCGX_Request *
|
|
restconf_reply_body_start(void *req0)
|
|
{
|
|
FCGX_Request *req = (FCGX_Request *)req0;
|
|
|
|
FCGX_FPrintF(req->out, "\r\n");
|
|
return req;
|
|
}
|
|
|
|
/*! Add HTTP header field name and value to reply, fcgi specific
|
|
* @param[in] req Fastcgi 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,
|
|
char *name,
|
|
char *vfmt,
|
|
...)
|
|
{
|
|
FCGX_Request *req = (FCGX_Request *)req0;
|
|
int retval = -1;
|
|
size_t vlen;
|
|
char *value = NULL;
|
|
va_list ap;
|
|
|
|
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);
|
|
FCGX_FPrintF(req->out, "%s: %s\r\n", name, value);
|
|
retval = 0;
|
|
done:
|
|
if (value)
|
|
free(value);
|
|
return retval;
|
|
}
|
|
|
|
/*! Add HTTP message body to reply, fcgi specific
|
|
* @param[in] req Fastcgi request handle
|
|
* @param[in,out] content_len This is for Content-Length header
|
|
* @param[in] bfmt HTTP message body format string w variable parameter
|
|
* @see eg RFC 7230
|
|
*/
|
|
int
|
|
restconf_reply_body_add(void *req0,
|
|
size_t *content_len,
|
|
char *bfmt,
|
|
...)
|
|
{
|
|
FCGX_Request *req = (FCGX_Request *)req0;
|
|
int retval = -1;
|
|
size_t sz;
|
|
size_t blen;
|
|
char *body = NULL;
|
|
va_list ap;
|
|
|
|
if (req == NULL || bfmt == NULL){
|
|
clicon_err(OE_CFG, EINVAL, "req or body is NULL");
|
|
return -1;
|
|
}
|
|
va_start(ap, bfmt);
|
|
blen = vsnprintf(NULL, 0, bfmt, ap);
|
|
va_end(ap);
|
|
/* allocate body string exactly fitting */
|
|
if ((body = malloc(blen+1)) == NULL){
|
|
clicon_err(OE_UNIX, errno, "malloc");
|
|
goto done;
|
|
}
|
|
/* second round: compute actual body */
|
|
va_start(ap, bfmt);
|
|
if (vsnprintf(body, blen+1, bfmt, ap) < 0){
|
|
clicon_err(OE_UNIX, errno, "vsnprintf");
|
|
va_end(ap);
|
|
goto done;
|
|
}
|
|
va_end(ap);
|
|
FCGX_FPrintF(req->out, "%s", body);
|
|
/* Increment in/out Content-Length parameter */
|
|
if (content_len){
|
|
sz = strlen(body);
|
|
*content_len += sz;
|
|
}
|
|
retval = 0;
|
|
done:
|
|
if (body)
|
|
free(body);
|
|
return retval;
|
|
}
|
|
|
|
/*! Send HTTP reply with potential message body
|
|
* @param[in] req Fastcgi request handle
|
|
* @param[in] code Status code
|
|
* @param[in] cb Body as a cbuf if non-NULL
|
|
*
|
|
* Prerequisites: status code set, headers given, body if wanted set
|
|
*/
|
|
int
|
|
restconf_reply_send(void *req0,
|
|
int code,
|
|
cbuf *cb)
|
|
{
|
|
FCGX_Request *req = (FCGX_Request *)req0;
|
|
int retval = -1;
|
|
const char *reason_phrase;
|
|
|
|
FCGX_SetExitStatus(code, req->out);
|
|
if ((reason_phrase = restconf_code2reason(code)) == NULL)
|
|
reason_phrase="";
|
|
if (restconf_reply_header(req, "Status", "%d %s", code, reason_phrase) < 0)
|
|
goto done;
|
|
FCGX_FPrintF(req->out, "\r\n");
|
|
/* Write a body if cbuf is nonzero */
|
|
if (cb != NULL && cbuf_len(cb)){
|
|
FCGX_FPrintF(req->out, "%s", cbuf_get(cb));
|
|
FCGX_FPrintF(req->out, "\r\n");
|
|
}
|
|
FCGX_FFlush(req->out); /* Is this only for notification ? */
|
|
retval = 0;
|
|
done:
|
|
return retval;
|
|
}
|
|
|
|
/*!
|
|
* @param[in] req Fastcgi request handle
|
|
*/
|
|
cbuf *
|
|
restconf_get_indata(void *req0)
|
|
{
|
|
FCGX_Request *req = (FCGX_Request *)req0;
|
|
int c;
|
|
cbuf *cb = NULL;
|
|
|
|
if ((cb = cbuf_new()) == NULL)
|
|
return NULL;
|
|
while ((c = FCGX_GetChar(req->in)) != -1)
|
|
cprintf(cb, "%c", c);
|
|
return cb;
|
|
}
|