further restconf refactoring
This commit is contained in:
Olof hagsand
parent
ff5462ecac
commit
e2d9c046af
23 changed files with 1424 additions and 399 deletions
217
apps/restconf/restconf_api_fcgi.c
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217
apps/restconf/restconf_api_fcgi.c
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@ -0,0 +1,217 @@
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/*
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*
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***** BEGIN LICENSE BLOCK *****
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Copyright (C) 2009-2020 Olof Hagsand
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Copyright (C) 2020 Olof Hagsand and Rubicon Communications, LLC(Netgate)
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This file is part of CLIXON.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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Alternatively, the contents of this file may be used under the terms of
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the GNU General Public License Version 3 or later (the "GPL"),
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in which case the provisions of the GPL are applicable instead
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of those above. If you wish to allow use of your version of this file only
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under the terms of the GPL, and not to allow others to
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use your version of this file under the terms of Apache License version 2,
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indicate your decision by deleting the provisions above and replace them with
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the notice and other provisions required by the GPL. If you do not delete
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the provisions above, a recipient may use your version of this file under
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the terms of any one of the Apache License version 2 or the GPL.
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***** END LICENSE BLOCK *****
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* Concrete functions for FCGI of the
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* Virtual clixon restconf API functions.
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* @see restconf_api.h for virtual API
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*/
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <errno.h>
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#include <signal.h>
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#include <syslog.h>
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#include <fcntl.h>
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#include <ctype.h>
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#include <time.h>
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#include <signal.h>
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#include <dlfcn.h>
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#include <sys/param.h>
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#include <sys/time.h>
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#include <sys/wait.h>
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/* cligen */
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#include <cligen/cligen.h>
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/* clicon */
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#include <clixon/clixon.h>
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#include <fcgiapp.h> /* Need to be after clixon_xml-h due to attribute format */
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#include "restconf_lib.h"
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#include "restconf_api.h" /* Virtual api */
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/*! Add HTTP header field name and value to reply, fcgi specific
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* @param[in] req Fastcgi request handle
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* @param[in] code HTTP status code
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* @see eg RFC 7230
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*/
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int
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restconf_reply_status_code(void *req0,
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int code)
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{
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FCGX_Request *req = (FCGX_Request *)req0;
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FCGX_SetExitStatus(code, req->out);
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return 0;
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}
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/*! HTTP headers done, if there is a message body coming next
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* @param[in] req Fastcgi request handle
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* @retval body Handle for body handling (in fcgi same as req)
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*
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* HTTP-message = start-line *( header-field CRLF ) CRLF [ message-body ]
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* @see eg RFC 7230
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* XXX may be unecessary (or body start or something)
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*/
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FCGX_Request *
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restconf_reply_body_start(void *req0)
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{
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FCGX_Request *req = (FCGX_Request *)req0;
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FCGX_FPrintF(req->out, "\r\n");
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return req;
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}
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/*! Add HTTP header field name and value to reply, fcgi specific
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* @param[in] req Fastcgi request handle
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* @param[in] name HTTP header field name
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* @param[in] vfmt HTTP header field value format string w variable parameter
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* @see eg RFC 7230
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*/
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int
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restconf_reply_header_add(void *req0,
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char *name,
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char *vfmt,
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...)
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{
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FCGX_Request *req = (FCGX_Request *)req0;
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int retval = -1;
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size_t vlen;
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char *value = NULL;
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va_list ap;
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if (req == NULL || name == NULL || vfmt == NULL){
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clicon_err(OE_CFG, EINVAL, "req, name or value is NULL");
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return -1;
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}
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va_start(ap, vfmt);
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vlen = vsnprintf(NULL, 0, vfmt, ap);
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va_end(ap);
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/* allocate value string exactly fitting */
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if ((value = malloc(vlen+1)) == NULL){
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clicon_err(OE_UNIX, errno, "malloc");
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goto done;
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}
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/* second round: compute actual value */
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va_start(ap, vfmt);
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if (vsnprintf(value, vlen+1, vfmt, ap) < 0){
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clicon_err(OE_UNIX, errno, "vsnprintf");
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va_end(ap);
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goto done;
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}
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va_end(ap);
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FCGX_FPrintF(req->out, "%s: %s\r\n", name, value);
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retval = 0;
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done:
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if (value)
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free(value);
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return retval;
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}
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/*! Add HTTP message body to reply, fcgi specific
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* @param[in] req Fastcgi request handle
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* @param[in,out] content_len This is for Content-Length header
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* @param[in] bfmt HTTP message body format string w variable parameter
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* @see eg RFC 7230
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*/
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int
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restconf_reply_body_add(void *req0,
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size_t *content_len,
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char *bfmt,
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...)
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{
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FCGX_Request *req = (FCGX_Request *)req0;
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int retval = -1;
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size_t sz;
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size_t blen;
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char *body = NULL;
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va_list ap;
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if (req == NULL || bfmt == NULL){
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clicon_err(OE_CFG, EINVAL, "req or body is NULL");
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return -1;
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}
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va_start(ap, bfmt);
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blen = vsnprintf(NULL, 0, bfmt, ap);
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va_end(ap);
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/* allocate body string exactly fitting */
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if ((body = malloc(blen+1)) == NULL){
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clicon_err(OE_UNIX, errno, "malloc");
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goto done;
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}
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/* second round: compute actual body */
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va_start(ap, bfmt);
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if (vsnprintf(body, blen+1, bfmt, ap) < 0){
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clicon_err(OE_UNIX, errno, "vsnprintf");
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va_end(ap);
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goto done;
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}
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va_end(ap);
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FCGX_FPrintF(req->out, "%s", body);
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/* Increment in/out Content-Length parameter */
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if (content_len){
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sz = strlen(body);
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*content_len += sz;
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}
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retval = 0;
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done:
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if (body)
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free(body);
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return retval;
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}
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/*! Send HTTP reply with potential message body
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* @param[in] req Fastcgi request handle
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* @param[in] cb Body as a cbuf, send if
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*
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* Prerequisites: status code set, headers given, body if wanted set
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*/
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int
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restconf_reply_send(void *req0,
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cbuf *cb)
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{
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FCGX_Request *req = (FCGX_Request *)req0;
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int retval = -1;
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/* Write a body if cbuf is nonzero */
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if (cb != NULL && cbuf_len(cb)){
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FCGX_FPrintF(req->out, "\r\n");
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FCGX_FPrintF(req->out, "%s", cbuf_get(cb));
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}
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retval = 0;
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return retval;
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}
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