207 lines
6 KiB
C
207 lines
6 KiB
C
/*
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*
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***** BEGIN LICENSE BLOCK *****
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Copyright (C) 2009-2019 Olof Hagsand
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Copyright (C) 2020-2022 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 openssl 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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#ifdef HAVE_CONFIG_H
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#include "clixon_config.h" /* generated by config & autoconf */
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#endif
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#include <stdio.h>
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#include <unistd.h>
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#include <string.h>
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#include <signal.h>
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#include <sys/socket.h>
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#include <arpa/inet.h>
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#include <openssl/ssl.h>
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#include <openssl/err.h>
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#ifdef HAVE_LIBNGHTTP2
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#include <nghttp2/nghttp2.h>
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#endif
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/* cligen */
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#include <cligen/cligen.h>
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/* clixon */
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#include <clixon/clixon.h>
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#include "restconf_lib.h"
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#include "restconf_api.h" /* Virtual api */
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#include "restconf_native.h"
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/*! Add HTTP header field name and value to reply
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*
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* Generic code, add to restconf/native struct. Specific http/1 or /2 code actually sends
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* @param[in] req 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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* @retval 0 OK
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* @retval -1 Error
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* @see restconf_submit_response http/2 actual send function
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*/
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int
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restconf_reply_header(void *req0,
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const char *name,
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const char *vfmt,
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...)
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{
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int retval = -1;
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restconf_stream_data *sd = (restconf_stream_data *)req0;
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restconf_conn *rc;
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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 (sd == NULL || name == NULL || vfmt == NULL){
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clixon_err(OE_CFG, EINVAL, "sd, name or value is NULL");
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goto done;
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}
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if ((rc = sd->sd_conn) == NULL){
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clixon_err(OE_CFG, EINVAL, "rc is NULL");
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goto done;
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}
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/*
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* If HTTP/2, filter some headers
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* The following header fields must not appear: "Connection", "Keep-Alive", "Proxy-Connection",
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* "Transfer-Encoding" and "Upgrade".
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*/
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if (rc->rc_proto == HTTP_2){ // NO http/2
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if (strcmp(name, "Connection") == 0){
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clixon_debug(CLIXON_DBG_RESTCONF, "Skip: %s", name);
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goto ok;
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}
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}
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/* First round: compute vlen and allocate value */
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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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clixon_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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clixon_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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clixon_debug(CLIXON_DBG_RESTCONF, "%s: %s", name, value);
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if (cvec_add_string(sd->sd_outp_hdrs, (char*)name, value) < 0){
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clixon_err(OE_RESTCONF, errno, "cvec_add_string");
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goto done;
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}
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ok:
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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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/*! Assign values to HTTP reply with potential message body
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*
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* Generic code, add to restconf/native struct. Specific http/1 or /2 code actually sends
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* @param[in] req http request handle
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* @param[in] code Status code
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* @param[in] cb Body as a cbuf if non-NULL. Note: is consumed
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* @param[in] head Only send headers, dont send body.
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* @retval 0 OK
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* @retval -1 Error
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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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int code,
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cbuf *cb,
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int head)
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{
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int retval = -1;
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restconf_stream_data *sd = (restconf_stream_data *)req0;
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clixon_debug(CLIXON_DBG_RESTCONF, "code:%d", code);
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if (sd == NULL){
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clixon_err(OE_CFG, EINVAL, "sd is NULL");
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goto done;
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}
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sd->sd_code = code;
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if (cb != NULL){
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if (cbuf_len(cb)){
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sd->sd_body_len = cbuf_len(cb);
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if (head){
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cbuf_free(cb);
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}
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else{
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sd->sd_body = cb;
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sd->sd_body_offset = 0;
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}
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}
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else{
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cbuf_free(cb);
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sd->sd_body_len = 0;
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}
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}
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else
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sd->sd_body_len = 0;
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retval = 0;
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done:
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return retval;
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}
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/*! Get input data from http request, eg such as curl -X PUT http://... <indata>
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*
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* @param[in] req Request handle
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* @note: reuses cbuf from stream-data
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*/
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cbuf *
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restconf_get_indata(void *req0)
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{
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restconf_stream_data *sd = (restconf_stream_data *)req0;
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cbuf *cb = NULL;
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if (sd == NULL){
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clixon_err(OE_CFG, EINVAL, "sd is NULL");
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goto done;
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}
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cb = sd->sd_indata;
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done:
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return cb;
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}
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