further restconf refactoring

2020-06-11 21:54:09 +02:00 · 2020-06-11 21:54:09 +02:00 · e2d9c046af
commit e2d9c046af
parent ff5462ecac
23 changed files with 1424 additions and 399 deletions
--- a/apps/restconf/restconf_root.c
+++ b/apps/restconf/restconf_root.c
@ -0,0 +1,118 @@
+/*
+ *
+  ***** BEGIN LICENSE BLOCK *****
+ 
+  Copyright (C) 2009-2019 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 *****
+  * Generic restconf root handlers eg for /restconf /.well-known, etc
+ */
+
+
+#ifdef HAVE_CONFIG_H
+#include "clixon_config.h" /* generated by config & autoconf */
+#endif
+
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <errno.h>
+#include <signal.h>
+#include <syslog.h>
+#include <fcntl.h>
+#include <time.h>
+#include <limits.h>
+#include <signal.h>
+#include <sys/time.h>
+#include <sys/wait.h>
+#include <libgen.h>
+#include <sys/stat.h> /* chmod */
+
+/* cligen */
+#include <cligen/cligen.h>
+
+/* clicon */
+#include <clixon/clixon.h>
+
+/* restconf */
+#include "restconf_lib.h"
+#include "restconf_api.h"
+#include "restconf_root.h"
+
+
+/*! Determine the root of the RESTCONF API
+ * @param[in]  h        Clicon handle
+ * @param[in]  req      Generic Www handle (can be part of clixon handle)
+ * @param[in]  cb       Body buffer
+ * @see RFC8040 3.1 and RFC7320
+ * In line with the best practices defined by [RFC7320], RESTCONF
+ * enables deployments to specify where the RESTCONF API is located.
+ */
+int
+api_well_known(clicon_handle h,
+	       void         *req)
+{
+    int       retval = -1;
+    char     *request_method;
+    cbuf     *cb = NULL;
+
+    clicon_debug(1, "%s", __FUNCTION__);
+    if (req == NULL){
+	errno = EINVAL;
+	goto done;
+    }
+    request_method = clixon_restconf_param_get(h, "REQUEST_METHOD");
+    if (strcmp(request_method, "GET") != 0){
+	restconf_method_notallowed(req, "GET");
+	goto ok;
+    }
+    restconf_reply_status_code(req, 200); /* OK */
+    restconf_reply_header_add(req, "Cache-Control", "no-cache");
+    restconf_reply_header_add(req, "Content-Type", "application/xrd+xml");
+    /* Create body */
+    if ((cb = cbuf_new()) == NULL){
+	clicon_err(OE_UNIX, errno, "cbuf_new");
+	goto done;
+    }
+    cprintf(cb, "<XRD xmlns='http://docs.oasis-open.org/ns/xri/xrd-1.0'>\n");
+    cprintf(cb, "   <Link rel='restconf' href='/restconf'/>\n");
+    cprintf(cb, "</XRD>\r\n");
+
+    /* Must be after body */
+    restconf_reply_header_add(req, "Content-Length", "%d", cbuf_len(cb)); 
+    if (restconf_reply_send(req, cb) < 0)
+	goto done;
+ ok:
+    retval = 0;
+ done:
+    if (cb)
+	cbuf_free(cb);
+    return retval;
+}
+