2008 lines
54 KiB
C
2008 lines
54 KiB
C
/*
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*
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***** BEGIN LICENSE BLOCK *****
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Copyright (C) 2009-2018 Olof Hagsand and Benny Holmgren
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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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*
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* XML code
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*
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* file
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* +---------+ db2xml_key-> save_db_to_xml->
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* +-------------> | database| <------------+------------------+
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* | +---------+ <-xml2db | <-load_xml_to_db |
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* | | |
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* | | |
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* v v v
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* +---------+ <-xml2cvec_key +-----------+ +---------+
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* | cvec | <---------------------> | xml cxobj |<--------->| xmlfile |
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* +---------+ cvec2xml-> +-----------+ +---------+
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* cvec2xml_1(yang)-> xml2json->|
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* xml2txt-> |
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* xml2cli-> v
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* +---------+
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* | file |
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* +---------+
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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 <stdlib.h>
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#include <unistd.h>
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#include <errno.h>
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#include <ctype.h>
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#include <string.h>
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#include <syslog.h>
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#include <fcntl.h>
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#include <assert.h>
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#include <arpa/inet.h>
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#include <sys/param.h>
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#include <netinet/in.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_string.h"
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#include "clixon_queue.h"
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#include "clixon_hash.h"
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#include "clixon_handle.h"
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#include "clixon_string.h"
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#include "clixon_yang.h"
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#include "clixon_yang_type.h"
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#include "clixon_options.h"
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#include "clixon_xml.h"
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#include "clixon_plugin.h"
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#include "clixon_xpath_ctx.h"
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#include "clixon_xpath.h"
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#include "clixon_xsl.h"
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#include "clixon_log.h"
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#include "clixon_err.h"
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#include "clixon_xml_sort.h"
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#include "clixon_xml_map.h"
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/*! x is element and has eactly one child which in turn has none */
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static int
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tleaf(cxobj *x)
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{
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cxobj *c;
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if (xml_type(x) != CX_ELMNT)
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return 0;
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if (xml_child_nr(x) != 1)
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return 0;
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c = xml_child_i(x, 0);
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return (xml_child_nr(c) == 0);
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}
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/*! Translate XML -> TEXT
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* @param[in] level print 4 spaces per level in front of each line
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* XXX rewrite using YANG and remove encrypted password KLUDGE
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*/
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int
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xml2txt(FILE *f,
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cxobj *x,
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int level)
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{
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cxobj *xe = NULL;
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int children=0;
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char *term = NULL;
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int retval = -1;
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xe = NULL; /* count children */
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while ((xe = xml_child_each(x, xe, -1)) != NULL)
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children++;
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if (!children){
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if (xml_type(x) == CX_BODY){
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term = xml_value(x);
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}
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else{
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fprintf(f, "%*s", 4*level, "");
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term = xml_name(x);
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}
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fprintf(f, "%s;\n", term);
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retval = 0;
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goto done;
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}
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fprintf(f, "%*s", 4*level, "");
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fprintf(f, "%s ", xml_name(x));
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if (!tleaf(x))
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fprintf(f, "{\n");
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xe = NULL;
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while ((xe = xml_child_each(x, xe, -1)) != NULL){
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if (xml2txt(f, xe, level+1) < 0)
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break;
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}
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if (!tleaf(x))
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fprintf(f, "%*s}\n", 4*level, "");
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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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/*! Translate from XML to CLI commands
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* Howto: join strings and pass them down.
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* Identify unique/index keywords for correct set syntax.
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* Args:
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* @param[in] f Where to print cli commands
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* @param[in] x XML Parse-tree (to translate)
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* @param[in] prepend0 Print this text in front of all commands.
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* @param[in] gt option to steer cli syntax
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*/
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int
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xml2cli(FILE *f,
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cxobj *x,
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char *prepend0,
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enum genmodel_type gt)
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{
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int retval = -1;
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cxobj *xe = NULL;
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cbuf *cbpre = NULL;
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yang_stmt *ys;
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int match;
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char *body;
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ys = xml_spec(x);
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if (ys->ys_keyword == Y_LEAF || ys->ys_keyword == Y_LEAF_LIST){
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if (prepend0)
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fprintf(f, "%s", prepend0);
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body = xml_body(x);
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if (gt == GT_ALL || gt == GT_VARS)
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fprintf(f, "%s ", xml_name(x));
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if (index(body, ' '))
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fprintf(f, "\"%s\"", body);
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else
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fprintf(f, "%s", body);
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fprintf(f, "\n");
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goto ok;
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}
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/* Create prepend variable string */
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if ((cbpre = cbuf_new()) == NULL){
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clicon_err(OE_PLUGIN, errno, "cbuf_new");
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goto done;
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}
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if (prepend0)
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cprintf(cbpre, "%s", prepend0);
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cprintf(cbpre, "%s ", xml_name(x));
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if (ys->ys_keyword == Y_LIST){
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/* If list then first loop through keys */
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xe = NULL;
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while ((xe = xml_child_each(x, xe, -1)) != NULL){
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if ((match = yang_key_match((yang_node*)ys, xml_name(xe))) < 0)
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goto done;
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if (!match)
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continue;
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if (gt == GT_ALL)
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cprintf(cbpre, "%s ", xml_name(xe));
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cprintf(cbpre, "%s ", xml_body(xe));
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}
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}
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/* Then loop through all other (non-keys) */
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xe = NULL;
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while ((xe = xml_child_each(x, xe, -1)) != NULL){
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if (ys->ys_keyword == Y_LIST){
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if ((match = yang_key_match((yang_node*)ys, xml_name(xe))) < 0)
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goto done;
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if (match)
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continue;
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}
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if (xml2cli(f, xe, cbuf_get(cbpre), gt) < 0)
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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 (cbpre)
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cbuf_free(cbpre);
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return retval;
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}
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/*! Validate xml node of type leafref, ensure the value is one of that path's reference
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* @param[in] xt XML leaf node of type leafref
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* @param[in] ytype Yang type statement belonging to the XML node
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*/
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static int
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validate_leafref(cxobj *xt,
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yang_stmt *ytype)
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{
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int retval = -1;
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yang_stmt *ypath;
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cxobj **xvec = NULL;
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cxobj *x;
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int i;
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size_t xlen = 0;
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char *leafrefbody;
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char *leafbody;
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if ((leafrefbody = xml_body(xt)) == NULL)
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return 0;
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if ((ypath = yang_find((yang_node*)ytype, Y_PATH, NULL)) == NULL){
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clicon_err(OE_DB, 0, "Leafref %s requires path statement", ytype->ys_argument);
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goto done;
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}
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if (xpath_vec(xt, "%s", &xvec, &xlen, ypath->ys_argument) < 0)
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goto done;
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for (i = 0; i < xlen; i++) {
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x = xvec[i];
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if ((leafbody = xml_body(x)) == NULL)
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continue;
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if (strcmp(leafbody, leafrefbody) == 0)
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break;
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}
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if (i==xlen){
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clicon_err(OE_DB, 0, "Leafref validation failed, no such leaf: %s",
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leafrefbody);
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goto done;
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}
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retval = 0;
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done:
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if (xvec)
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free(xvec);
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return retval;
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}
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/*! Validate xml node of type identityref, ensure value is a defined identity
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* Check if a given node has value derived from base identity. This is
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* a run-time check necessary when validating eg netconf.
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* Valid values for an identityref are any identities derived from all
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* the identityref's base identities.
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* Example:
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* b0 --> b1 --> b2 (b1 & b2 are derived)
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* identityref b2
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* base b0;
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* This function does: derived_from(b2, b0);
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* @param[in] xt XML leaf node of type identityref
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* @param[in] ys Yang spec of leaf
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* @param[in] ytype Yang type field of type identityref
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* @see ys_populate_identity where the derived types are set
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* @see RFC7950 Sec 9.10.2:
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*/
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static int
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validate_identityref(cxobj *xt,
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yang_stmt *ys,
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yang_stmt *ytype)
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{
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int retval = -1;
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char *node;
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yang_stmt *ybaseref; /* This is the type's base reference */
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yang_stmt *ybaseid;
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char *prefix = NULL;
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cbuf *cb = NULL;
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/* Get idref value. Then see if this value is derived from ytype.
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* Always add default prefix because derived identifiers are stored with
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* prefixes in the base identifiers derived-list.
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*/
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if ((node = xml_body(xt)) == NULL)
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return 0;
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if (strchr(node, ':') == NULL){
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prefix = yang_find_myprefix(ys);
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if ((cb = cbuf_new()) == NULL){
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clicon_err(OE_UNIX, errno, "cbuf_new");
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goto done;
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}
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cprintf(cb, "%s:%s", prefix, node);
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node = cbuf_get(cb);
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}
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/* This is the type's base reference */
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if ((ybaseref = yang_find((yang_node*)ytype, Y_BASE, NULL)) == NULL){
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clicon_err(OE_DB, 0, "Identityref validation failed, no base");
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goto done;
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}
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/* This is the actual base identity */
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if ((ybaseid = yang_find_identity(ybaseref, ybaseref->ys_argument)) == NULL){
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clicon_err(OE_DB, 0, "Identityref validation failed, no base identity");
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goto done;
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}
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/* Here check if node is in the derived node list of the base identity */
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if (cvec_find(ybaseid->ys_cvec, node) == NULL){
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clicon_err(OE_DB, 0, "Identityref validation failed, %s not derived from %s", node, ybaseid->ys_argument);
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goto done;
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}
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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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/*! Validate a single XML node with yang specification for added entry
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* 1. Check if mandatory leafs present as subs.
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* 2. Check leaf values, eg int ranges and string regexps.
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* @param[in] xt XML node to be validated
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* @retval 0 Valid OK
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* @retval -1 Validation failed
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* @see xml_yang_validate_all
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*/
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int
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xml_yang_validate_add(cxobj *xt,
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void *arg)
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{
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int retval = -1;
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cg_var *cv = NULL;
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char *reason = NULL;
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yang_stmt *yc;
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int i;
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yang_stmt *ys;
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char *body;
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/* if not given by argument (overide) use default link
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and !Node has a config sub-statement and it is false */
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if ((ys = xml_spec(xt)) != NULL && yang_config(ys) != 0){
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switch (ys->ys_keyword){
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case Y_INPUT:
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case Y_LIST:
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/* fall thru */
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case Y_CONTAINER:
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for (i=0; i<ys->ys_len; i++){
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yc = ys->ys_stmt[i];
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if (yc->ys_keyword != Y_LEAF)
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continue;
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if (yang_config(yc)==0)
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continue;
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if (yang_mandatory(yc) && xml_find(xt, yc->ys_argument)==NULL){
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clicon_err(OE_CFG, 0,"Missing mandatory variable: %s",
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yc->ys_argument);
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goto done;
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}
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}
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break;
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case Y_LEAF:
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/* fall thru */
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case Y_LEAF_LIST:
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/* validate value against ranges, etc */
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if ((cv = cv_dup(ys->ys_cv)) == NULL){
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clicon_err(OE_UNIX, errno, "cv_dup");
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goto done;
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}
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/* In the union case, value is parsed as generic REST type,
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* needs to be reparsed when concrete type is selected
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*/
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if ((body = xml_body(xt)) != NULL){
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if (cv_parse(body, cv) <0){
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clicon_err(OE_UNIX, errno, "cv_parse");
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goto done;
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}
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if ((ys_cv_validate(cv, ys, &reason)) != 1){
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clicon_err(OE_DB, 0,
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"validation of %s failed %s",
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ys->ys_argument, reason?reason:"");
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if (reason)
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free(reason);
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goto done;
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}
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}
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break;
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default:
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break;
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}
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}
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retval = 0;
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done:
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if (cv)
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cv_free(cv);
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return retval;
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}
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/*! Validate a single XML node with yang specification for all (not only added) entries
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* 1. Check leafrefs. Eg you delete a leaf and a leafref references it.
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* @param[in] xt XML node to be validated
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* @retval 0 Valid OK
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* @retval -1 Validation failed
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* @see xml_yang_validate_add
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*/
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int
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xml_yang_validate_all(cxobj *xt,
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void *arg)
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{
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int retval = -1;
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yang_stmt *ys; /* yang node */
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yang_stmt *yc; /* yang child */
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yang_stmt *ye; /* yang must error-message */
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char *xpath;
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int b;
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/* if not given by argument (overide) use default link
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and !Node has a config sub-statement and it is false */
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if ((ys = xml_spec(xt)) != NULL &&
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yang_config(ys) != 0){
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/* Node-specific validation */
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switch (ys->ys_keyword){
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case Y_LEAF:
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/* fall thru */
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case Y_LEAF_LIST:
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/* Special case if leaf is leafref, then first check against
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current xml tree
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*/
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if ((yc = yang_find((yang_node*)ys, Y_TYPE, NULL)) != NULL){
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if (strcmp(yc->ys_argument, "leafref") == 0){
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if (validate_leafref(xt, yc) < 0)
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goto done;
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}
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else if (strcmp(yc->ys_argument, "identityref") == 0){
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if (validate_identityref(xt, ys, yc) < 0)
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goto done;
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}
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}
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break;
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default:
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break;
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}
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/* must sub-node RFC 7950 Sec 7.5.3. Can be several. */
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yc = NULL;
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while ((yc = yn_each((yang_node*)ys, yc)) != NULL) {
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if (yc->ys_keyword != Y_MUST)
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continue;
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xpath = yc->ys_argument; /* "must" has xpath argument */
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if ((b = xpath_vec_bool(xt, "%s", xpath)) < 0)
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goto done;
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if (!b){
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if ((ye = yang_find((yang_node*)yc, Y_ERROR_MESSAGE, NULL)) != NULL)
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clicon_err(OE_DB, 0, "%s", ye->ys_argument);
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else
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clicon_err(OE_DB, 0, "xpath %s validation failed", xml_name(xt));
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goto done;
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}
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}
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/* "when" sub-node RFC 7950 Sec 7.21.5. Can only be one. */
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if ((yc = yang_find((yang_node*)ys, Y_WHEN, NULL)) != NULL){
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xpath = yc->ys_argument; /* "when" has xpath argument */
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if ((b = xpath_vec_bool(xt, "%s", xpath)) < 0)
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goto done;
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if (!b){
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clicon_err(OE_DB, 0, "xpath %s validation failed", xml_name(xt));
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goto done;
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}
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}
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}
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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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/*! Translate a single xml node to a cligen variable vector. Note not recursive
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* @param[in] xt XML tree containing one top node
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* @param[in] ys Yang spec containing type specification of top-node of xt
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* @param[out] cvv CLIgen variable vector. Should be freed by cvec_free()
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* @retval 0 Everything OK, cvv allocated and set
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* @retval -1 Something wrong, clicon_err() called to set error. No cvv returned
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* @note cvv Should be freed by cvec_free() after use.
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* 'Not recursive' means that only one level of XML bodies is translated to cvec:s.
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* If range is wriong (eg 1000 for uint8) a warning is logged, the value is
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* skipped, and continues.
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* yang is needed to know which type an xml element has.
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* Example:
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<a>
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<b>23</b>
|
|
<c>88</c>
|
|
<d>
|
|
<e>99</e>
|
|
</d>
|
|
</a>
|
|
--> b:23, c:88
|
|
* @see cvec2xml
|
|
*/
|
|
int
|
|
xml2cvec(cxobj *xt,
|
|
yang_stmt *yt,
|
|
cvec **cvv0)
|
|
{
|
|
int retval = -1;
|
|
cvec *cvv = NULL;
|
|
cxobj *xc; /* xml iteration variable */
|
|
yang_stmt *ys; /* yang spec */
|
|
cg_var *cv;
|
|
cg_var *ycv;
|
|
char *body;
|
|
char *reason = NULL;
|
|
int ret;
|
|
char *name;
|
|
|
|
xc = NULL;
|
|
/* Tried to allocate whole cvv here, but some cg_vars may be invalid */
|
|
if ((cvv = cvec_new(0)) == NULL){
|
|
clicon_err(OE_UNIX, errno, "cvec_new");
|
|
goto err;
|
|
}
|
|
xc = NULL;
|
|
/* Go through all children of the xml tree */
|
|
while ((xc = xml_child_each(xt, xc, CX_ELMNT)) != NULL){
|
|
name = xml_name(xc);
|
|
if ((ys = yang_find_datanode((yang_node*)yt, name)) == NULL){
|
|
clicon_debug(0, "%s: yang sanity problem: %s in xml but not present in yang under %s",
|
|
__FUNCTION__, name, yt->ys_argument);
|
|
if ((body = xml_body(xc)) != NULL){
|
|
if ((cv = cv_new(CGV_STRING)) == NULL){
|
|
clicon_err(OE_PLUGIN, errno, "cv_new");
|
|
goto err;
|
|
}
|
|
cv_name_set(cv, name);
|
|
if ((ret = cv_parse1(body, cv, &reason)) < 0){
|
|
clicon_err(OE_PLUGIN, errno, "cv_parse %s",name);
|
|
goto err;
|
|
}
|
|
/* If value is out-of-range, log and skip value, and continue */
|
|
if (ret == 0){
|
|
clicon_log(LOG_WARNING, "cv_parse %s: %s", name, reason);
|
|
if (reason)
|
|
free(reason);
|
|
}
|
|
else
|
|
cvec_append_var(cvv, cv); /* Add to variable vector */
|
|
cv_free(cv);
|
|
}
|
|
}
|
|
else if ((ycv = ys->ys_cv) != NULL){
|
|
if ((body = xml_body(xc)) != NULL){
|
|
if ((cv = cv_new(CGV_STRING)) == NULL){
|
|
clicon_err(OE_PLUGIN, errno, "cv_new");
|
|
goto err;
|
|
}
|
|
if (cv_cp(cv, ycv) < 0){
|
|
clicon_err(OE_PLUGIN, errno, "cv_cp");
|
|
goto err;
|
|
}
|
|
if ((ret = cv_parse1(body, cv, &reason)) < 0){
|
|
clicon_err(OE_PLUGIN, errno, "cv_parse: %s", name);
|
|
goto err;
|
|
}
|
|
if (ret == 0){
|
|
clicon_log(LOG_WARNING, "cv_parse %s: %s", name, reason);
|
|
if (reason)
|
|
free(reason);
|
|
}
|
|
else
|
|
cvec_append_var(cvv, cv); /* Add to variable vector */
|
|
cv_free(cv);
|
|
}
|
|
}
|
|
}
|
|
if (debug > 1){
|
|
clicon_debug(2, "%s cvv:\n", __FUNCTION__);
|
|
cvec_print(stderr, cvv);
|
|
}
|
|
*cvv0 = cvv;
|
|
return 0;
|
|
err:
|
|
if (cvv)
|
|
cvec_free(cvv);
|
|
return retval;
|
|
}
|
|
|
|
/*! Translate a cligen variable vector to an XML tree with depth one
|
|
* @param[in] cvv CLIgen variable vector. Should be freed by cvec_free()
|
|
* @param[in] toptag The XML tree in xt will have this XML tag
|
|
* @param[in] xt Parent, or NULL
|
|
* @param[out] xt Pointer to XML tree containing one top node. Should be freed with xml_free
|
|
* @retval 0 Everything OK, cvv allocated and set
|
|
* @retval -1 Something wrong, clicon_err() called to set error. No xt returned
|
|
* @see xml2cvec
|
|
* @see cvec2xml This does more but has an internal xml2cvec translation
|
|
*/
|
|
int
|
|
cvec2xml_1(cvec *cvv,
|
|
char *toptag,
|
|
cxobj *xp,
|
|
cxobj **xt0)
|
|
{
|
|
int retval = -1;
|
|
cxobj *xt = NULL;
|
|
cxobj *xn;
|
|
cxobj *xb;
|
|
cg_var *cv;
|
|
char *val;
|
|
int len=0;
|
|
int i;
|
|
|
|
cv = NULL;
|
|
while ((cv = cvec_each(cvv, cv)) != NULL)
|
|
len++;
|
|
if ((xt = xml_new(toptag, xp, NULL)) == NULL)
|
|
goto err;
|
|
if (xml_childvec_set(xt, len) < 0)
|
|
goto err;
|
|
cv = NULL;
|
|
i = 0;
|
|
while ((cv = cvec_each(cvv, cv)) != NULL) {
|
|
if (cv_type_get(cv)==CGV_ERR || cv_name_get(cv) == NULL)
|
|
continue;
|
|
if ((xn = xml_new(cv_name_get(cv), NULL, NULL)) == NULL) /* this leaks */
|
|
goto err;
|
|
xml_parent_set(xn, xt);
|
|
xml_child_i_set(xt, i++, xn);
|
|
if ((xb = xml_new("body", xn, NULL)) == NULL) /* this leaks */
|
|
goto err;
|
|
xml_type_set(xb, CX_BODY);
|
|
val = cv2str_dup(cv);
|
|
xml_value_set(xb, val); /* this leaks */
|
|
if (val)
|
|
free(val);
|
|
}
|
|
*xt0 = xt;
|
|
return 0;
|
|
err:
|
|
if (xt)
|
|
xml_free(xt);
|
|
return retval;
|
|
}
|
|
|
|
|
|
/*! Find next yang node, either start from yang_spec or some yang-node
|
|
* @param[in] y Node spec or sny yang-node
|
|
* @param[in] name Name of childnode to find
|
|
* @retval ys yang statement
|
|
* @retval NULL Error: no node found
|
|
*/
|
|
static yang_stmt *
|
|
yang_next(yang_node *y,
|
|
char *name)
|
|
{
|
|
yang_stmt *ys;
|
|
|
|
if (y->yn_keyword == Y_SPEC)
|
|
ys = yang_find_topnode((yang_spec*)y, name, YC_DATANODE);
|
|
else
|
|
ys = yang_find_datanode(y, name);
|
|
if (ys == NULL)
|
|
clicon_err(OE_UNIX, errno, "No yang node found: %s", name);
|
|
return ys;
|
|
}
|
|
|
|
/*! Recursive help function to compute differences between two xml trees
|
|
* @param[in] x1 First XML tree
|
|
* @param[in] x2 Second XML tree
|
|
* @param[out] x1vec Pointervector to XML nodes existing in only first tree
|
|
* @param[out] x1veclen Length of first vector
|
|
* @param[out] x2vec Pointervector to XML nodes existing in only second tree
|
|
* @param[out] x2veclen Length of x2vec vector
|
|
* @param[out] changed_x1 Pointervector to XML nodes changed orig value
|
|
* @param[out] changed_x2 Pointervector to XML nodes changed wanted value
|
|
* @param[out] changedlen Length of changed vector
|
|
*/
|
|
static int
|
|
xml_diff1(yang_stmt *ys,
|
|
cxobj *x1,
|
|
cxobj *x2,
|
|
cxobj ***x1vec,
|
|
size_t *x1veclen,
|
|
cxobj ***x2vec,
|
|
size_t *x2veclen,
|
|
cxobj ***changed_x1,
|
|
cxobj ***changed_x2,
|
|
size_t *changedlen)
|
|
{
|
|
int retval = -1;
|
|
cxobj *x1c = NULL; /* x1 child */
|
|
cxobj *x2c = NULL; /* x2 child */
|
|
yang_stmt *yc;
|
|
char *b1;
|
|
char *b2;
|
|
|
|
clicon_debug(2, "%s: %s", __FUNCTION__, ys->ys_argument?ys->ys_argument:"yspec");
|
|
/* Check nodes present in x1 and x2 + nodes only in x1
|
|
* Loop over x1
|
|
* XXX: room for improvement. Compare with match_base_child()
|
|
*/
|
|
x1c = NULL;
|
|
while ((x1c = xml_child_each(x1, x1c, CX_ELMNT)) != NULL){
|
|
if ((yc = yang_next((yang_node*)ys, xml_name(x1c))) == NULL)
|
|
goto done;
|
|
if (match_base_child(x2, x1c, &x2c, yc) < 0)
|
|
goto done;
|
|
if (x2c == NULL){
|
|
if (cxvec_append(x1c, x1vec, x1veclen) < 0)
|
|
goto done;
|
|
}
|
|
else{
|
|
if (yc->ys_keyword == Y_LEAF){
|
|
if ((b1 = xml_body(x1c)) == NULL) /* empty type */
|
|
break;
|
|
if ((b2 = xml_body(x2c)) == NULL) /* empty type */
|
|
break;
|
|
if (strcmp(b1, b2)){
|
|
if (cxvec_append(x1c, changed_x1, changedlen) < 0)
|
|
goto done;
|
|
(*changedlen)--; /* append two vectors */
|
|
if (cxvec_append(x2c, changed_x2, changedlen) < 0)
|
|
goto done;
|
|
}
|
|
}
|
|
if (xml_diff1(yc, x1c, x2c,
|
|
x1vec, x1veclen,
|
|
x2vec, x2veclen,
|
|
changed_x1, changed_x2, changedlen)< 0)
|
|
goto done;
|
|
}
|
|
} /* while x1 */
|
|
/* Check nodes present only in x2
|
|
* Loop over x2
|
|
*/
|
|
x2c = NULL;
|
|
while ((x2c = xml_child_each(x2, x2c, CX_ELMNT)) != NULL){
|
|
if ((yc = yang_next((yang_node*)ys, xml_name(x2c))) == NULL)
|
|
goto done;
|
|
if (match_base_child(x1, x2c, &x1c, yc) < 0)
|
|
goto done;
|
|
if (x1c == NULL)
|
|
if (cxvec_append(x2c, x2vec, x2veclen) < 0)
|
|
goto done;
|
|
} /* while x1 */
|
|
retval = 0;
|
|
done:
|
|
return retval;
|
|
}
|
|
|
|
/*! Compute differences between two xml trees
|
|
* @param[in] yspec Yang specification
|
|
* @param[in] x1 First XML tree
|
|
* @param[in] x2 Second XML tree
|
|
* @param[out] first Pointervector to XML nodes existing in only first tree
|
|
* @param[out] firstlen Length of first vector
|
|
* @param[out] second Pointervector to XML nodes existing in only second tree
|
|
* @param[out] secondlen Length of second vector
|
|
* @param[out] changed1 Pointervector to XML nodes changed orig value
|
|
* @param[out] changed2 Pointervector to XML nodes changed wanted value
|
|
* @param[out] changedlen Length of changed vector
|
|
* All xml vectors should be freed after use.
|
|
* Bot xml trees should be freed with xml_free()
|
|
*/
|
|
int
|
|
xml_diff(yang_spec *yspec,
|
|
cxobj *x1,
|
|
cxobj *x2,
|
|
cxobj ***first,
|
|
size_t *firstlen,
|
|
cxobj ***second,
|
|
size_t *secondlen,
|
|
cxobj ***changed1,
|
|
cxobj ***changed2,
|
|
size_t *changedlen)
|
|
{
|
|
int retval = -1;
|
|
|
|
*firstlen = 0;
|
|
*secondlen = 0;
|
|
*changedlen = 0;
|
|
if (x1 == NULL && x2 == NULL)
|
|
return 0;
|
|
if (x2 == NULL){
|
|
if (cxvec_append(x1, first, firstlen) < 0)
|
|
goto done;
|
|
goto ok;
|
|
}
|
|
if (x1 == NULL){
|
|
if (cxvec_append(x1, second, secondlen) < 0)
|
|
goto done;
|
|
goto ok;
|
|
}
|
|
if (xml_diff1((yang_stmt*)yspec, x1, x2,
|
|
first, firstlen,
|
|
second, secondlen,
|
|
changed1, changed2, changedlen) < 0)
|
|
goto done;
|
|
ok:
|
|
retval = 0;
|
|
done:
|
|
return retval;
|
|
}
|
|
|
|
/*! Construct an xml key format from yang statement using wildcards for keys
|
|
* Recursively construct it to the top.
|
|
* Example:
|
|
* yang: container a -> list b -> key c -> leaf d
|
|
* xpath: /a/b/%s/d
|
|
* @param[in] ys Yang statement
|
|
* @param[in] inclkey If set include key leaf (eg last leaf d in ex)
|
|
* @param[out] cb api_path_fmt,
|
|
*/
|
|
static int
|
|
yang2api_path_fmt_1(yang_stmt *ys,
|
|
int inclkey,
|
|
cbuf *cb)
|
|
{
|
|
yang_node *yp; /* parent */
|
|
int i;
|
|
cvec *cvk = NULL; /* vector of index keys */
|
|
int retval = -1;
|
|
|
|
yp = ys->ys_parent;
|
|
if (yp != NULL &&
|
|
yp->yn_keyword != Y_MODULE &&
|
|
yp->yn_keyword != Y_SUBMODULE){
|
|
if (yang2api_path_fmt_1((yang_stmt *)yp, 1, cb) < 0)
|
|
goto done;
|
|
}
|
|
if (inclkey){
|
|
if (ys->ys_keyword != Y_CHOICE && ys->ys_keyword != Y_CASE)
|
|
cprintf(cb, "/%s", ys->ys_argument);
|
|
}
|
|
else{
|
|
#if 1
|
|
if (ys->ys_keyword == Y_LEAF && yp &&
|
|
yp->yn_keyword == Y_LIST){
|
|
if (yang_key_match(yp, ys->ys_argument) == 0)
|
|
cprintf(cb, "/%s", ys->ys_argument); /* Not if leaf and key */
|
|
}
|
|
else
|
|
#endif
|
|
if (ys->ys_keyword != Y_CHOICE && ys->ys_keyword != Y_CASE)
|
|
cprintf(cb, "/%s", ys->ys_argument);
|
|
}
|
|
|
|
switch (ys->ys_keyword){
|
|
case Y_LIST:
|
|
cvk = ys->ys_cvec; /* Use Y_LIST cache, see ys_populate_list() */
|
|
if (cvec_len(cvk))
|
|
cprintf(cb, "=");
|
|
/* Iterate over individual keys */
|
|
for (i=0; i<cvec_len(cvk); i++){
|
|
if (i)
|
|
cprintf(cb, ",");
|
|
cprintf(cb, "%%s");
|
|
}
|
|
break;
|
|
case Y_LEAF_LIST:
|
|
cprintf(cb, "=%%s");
|
|
break;
|
|
default:
|
|
break;
|
|
} /* switch */
|
|
retval = 0;
|
|
done:
|
|
return retval;
|
|
}
|
|
|
|
/*! Construct an api_path_format from yang statement using wildcards for keys
|
|
* Recursively construct it to the top.
|
|
* Example:
|
|
* yang: container a -> list b -> key c -> leaf d
|
|
* api_path: /a/b=%s/d
|
|
* @param[in] ys Yang statement
|
|
* @param[in] inclkey If set include key leaf (eg last leaf d in ex)
|
|
* @param[out] api_path_fmt XML api path. Needs to be freed after use.
|
|
*/
|
|
int
|
|
yang2api_path_fmt(yang_stmt *ys,
|
|
int inclkey,
|
|
char **api_path_fmt)
|
|
{
|
|
int retval = -1;
|
|
cbuf *cb = NULL;
|
|
|
|
if ((cb = cbuf_new()) == NULL){
|
|
clicon_err(OE_UNIX, errno, "cbuf_new");
|
|
goto done;
|
|
}
|
|
if (yang2api_path_fmt_1(ys, inclkey, cb) < 0)
|
|
goto done;
|
|
if ((*api_path_fmt = strdup(cbuf_get(cb))) == NULL){
|
|
clicon_err(OE_UNIX, errno, "strdup");
|
|
goto done;
|
|
}
|
|
retval = 0;
|
|
done:
|
|
if (cb)
|
|
cbuf_free(cb);
|
|
return retval;
|
|
}
|
|
|
|
/*! Transform an xml key format and a vector of values to an XML key
|
|
* Used for actual key, eg in clicon_rpc_change(), xmldb_put_xkey()
|
|
* Example:
|
|
* xmlkeyfmt: /interfaces/interface=%s/ipv4/address=%s
|
|
* cvv: 0 : set interfaces interface e ipv4 address 1.2.3.4
|
|
* 1 : name = "e"
|
|
* 2 : ip = "1.2.3.4"
|
|
* api_path: /interfaces/interface=e/ipv4/address=1.2.3.4
|
|
* @param[in] api_path_fmt XML key format, eg /aaa/%s/name
|
|
* @param[in] cvv cligen variable vector, one for every wildchar in
|
|
* api_path_fmt
|
|
* @param[out] api_path api_path, eg /aaa/17. Free after use
|
|
* @param[out] yang_arg yang-stmt argument name. Free after use
|
|
* @note first and last elements of cvv are not used,..
|
|
* @see api_path_fmt2xpath
|
|
* @example
|
|
* api_path_fmt: /interfaces/interface=%s/name
|
|
* cvv: -
|
|
* api_path: /interfaces/interface/name
|
|
* @example
|
|
* api_path_fmt: /interfaces/interface=%s/name
|
|
* cvv: e0
|
|
* api_path: /interfaces/interface=e0/name
|
|
* @example
|
|
* api_path_fmt: /subif-entry=%s,%s/subid
|
|
* cvv: foo
|
|
* api_path: /subif-entry=foo/subid
|
|
*/
|
|
int
|
|
api_path_fmt2api_path(char *api_path_fmt,
|
|
cvec *cvv,
|
|
char **api_path)
|
|
{
|
|
int retval = -1;
|
|
char c;
|
|
int esc=0;
|
|
cbuf *cb = NULL;
|
|
int i;
|
|
int j;
|
|
char *str;
|
|
char *strenc=NULL;
|
|
cg_var *cv;
|
|
|
|
if ((cb = cbuf_new()) == NULL){
|
|
clicon_err(OE_UNIX, errno, "cbuf_new");
|
|
goto done;
|
|
}
|
|
j = 1; /* j==0 is cli string */
|
|
for (i=0; i<strlen(api_path_fmt); i++){
|
|
c = api_path_fmt[i];
|
|
if (esc){
|
|
esc = 0;
|
|
if (c!='s')
|
|
continue;
|
|
if (j == cvec_len(cvv)) /* last element */
|
|
;
|
|
else{
|
|
cv = cvec_i(cvv, j++);
|
|
if ((str = cv2str_dup(cv)) == NULL){
|
|
clicon_err(OE_UNIX, errno, "cv2str_dup");
|
|
goto done;
|
|
}
|
|
if (uri_percent_encode(str, &strenc) < 0)
|
|
goto done;
|
|
cprintf(cb, "%s", strenc);
|
|
free(strenc); strenc = NULL;
|
|
free(str); str = NULL;
|
|
}
|
|
}
|
|
else
|
|
if (c == '%')
|
|
esc++;
|
|
else{
|
|
if ((c == '=' || c == ',') && api_path_fmt[i+1]=='%' && j == cvec_len(cvv))
|
|
; /* skip */
|
|
else
|
|
cprintf(cb, "%c", c);
|
|
}
|
|
}
|
|
if ((*api_path = strdup(cbuf_get(cb))) == NULL){
|
|
clicon_err(OE_UNIX, errno, "strdup");
|
|
goto done;
|
|
}
|
|
retval = 0;
|
|
done:
|
|
if (cb)
|
|
cbuf_free(cb);
|
|
return retval;
|
|
}
|
|
|
|
|
|
/*! Transform an xml key format and a vector of values to an XML path
|
|
* Used to input xmldb_get() or xmldb_get_vec
|
|
* @param[in] api_path_fmt XML key format
|
|
* @param[in] cvv cligen variable vector, one for every wildchar in api_path_fmt
|
|
* @param[out] xpath XPATH
|
|
* Add .* in last %s position.
|
|
* @example
|
|
* api_path_fmt: /interface/%s/address/%s
|
|
* cvv: name=eth0
|
|
* xpath: /interface/[name='eth0']/address
|
|
* @example
|
|
* api_path_fmt: /ip/me/%s (if key)
|
|
* cvv: -
|
|
* xpath: /ipv4/me/a
|
|
* @example
|
|
* api_path_fmt: /subif-entry=%s,%s/subid
|
|
* cvv: foo
|
|
* xpath: /subif-entry[if-name=foo]/subid"
|
|
*/
|
|
int
|
|
api_path_fmt2xpath(char *api_path_fmt,
|
|
cvec *cvv,
|
|
char **xpath)
|
|
{
|
|
int retval = -1;
|
|
char c;
|
|
int esc=0;
|
|
cbuf *cb = NULL;
|
|
int i;
|
|
int j;
|
|
char *str;
|
|
cg_var *cv;
|
|
|
|
if ((cb = cbuf_new()) == NULL){
|
|
clicon_err(OE_UNIX, errno, "cbuf_new");
|
|
goto done;
|
|
}
|
|
j = 1; /* j==0 is cli string */
|
|
for (i=0; i<strlen(api_path_fmt); i++){
|
|
c = api_path_fmt[i];
|
|
if (esc){
|
|
esc = 0;
|
|
if (c!='s')
|
|
continue;
|
|
if (j == cvec_len(cvv)) /* last element */
|
|
;
|
|
else{
|
|
cv = cvec_i(cvv, j++);
|
|
if ((str = cv2str_dup(cv)) == NULL){
|
|
clicon_err(OE_UNIX, errno, "cv2str_dup");
|
|
goto done;
|
|
}
|
|
cprintf(cb,
|
|
#ifdef COMPAT_XSL
|
|
"[%s=%s]",
|
|
#else
|
|
"[%s='%s']",
|
|
#endif
|
|
cv_name_get(cv), str);
|
|
free(str);
|
|
}
|
|
}
|
|
else /* regular char */
|
|
if (c == '%')
|
|
esc++;
|
|
else{
|
|
if ((c == '=' || c == ',') && api_path_fmt[i+1]=='%')
|
|
; /* skip */
|
|
else
|
|
cprintf(cb, "%c", c);
|
|
}
|
|
}
|
|
if ((*xpath = strdup4(cbuf_get(cb))) == NULL){
|
|
clicon_err(OE_UNIX, errno, "strdup");
|
|
goto done;
|
|
}
|
|
retval = 0;
|
|
done:
|
|
if (cb)
|
|
cbuf_free(cb);
|
|
return retval;
|
|
}
|
|
|
|
/*! Prune everything that does not pass test or have at least a child* does not
|
|
* @param[in] xt XML tree with some node marked
|
|
* @param[in] flag Which flag to test for
|
|
* @param[in] test 1: test that flag is set, 0: test that flag is not set
|
|
* @param[out] upmark Set if a child (recursively) has marked set.
|
|
* The function removes all branches that does not pass the test
|
|
* Purge all nodes that dont have MARK flag set recursively.
|
|
* Save all nodes that is MARK:ed or have at least one (grand*)child that is MARKed
|
|
* @code
|
|
* xml_tree_prune_flagged_sub(xt, XML_FLAG_MARK, 1, NULL);
|
|
* @endcode
|
|
* @note This function seems a little too complex semantics
|
|
* @see xml_tree_prune_flagged for a simpler variant
|
|
*/
|
|
int
|
|
xml_tree_prune_flagged_sub(cxobj *xt,
|
|
int flag,
|
|
int test,
|
|
int *upmark)
|
|
{
|
|
int retval = -1;
|
|
int submark;
|
|
int mark;
|
|
cxobj *x;
|
|
cxobj *xprev;
|
|
int iskey;
|
|
int anykey=0;
|
|
yang_stmt *yt;
|
|
|
|
mark = 0;
|
|
yt = xml_spec(xt); /* xan be null */
|
|
x = NULL;
|
|
xprev = x = NULL;
|
|
while ((x = xml_child_each(xt, x, CX_ELMNT)) != NULL) {
|
|
if (xml_flag(x, flag) == test?flag:0){
|
|
/* Pass test */
|
|
mark++;
|
|
xprev = x;
|
|
continue; /* mark and stop here */
|
|
}
|
|
/* If it is key dont remove it yet (see second round) */
|
|
if (yt){
|
|
if ((iskey = yang_key_match((yang_node*)yt, xml_name(x))) < 0)
|
|
goto done;
|
|
if (iskey){
|
|
anykey++;
|
|
xprev = x; /* skip if this is key */
|
|
continue;
|
|
}
|
|
}
|
|
if (xml_tree_prune_flagged_sub(x, flag, test, &submark) < 0)
|
|
goto done;
|
|
/* if xt is list and submark anywhere, then key subs are also marked
|
|
*/
|
|
if (submark)
|
|
mark++;
|
|
else{ /* Safe with xml_child_each if last */
|
|
if (xml_purge(x) < 0)
|
|
goto done;
|
|
x = xprev;
|
|
}
|
|
xprev = x;
|
|
}
|
|
/* Second round: if any keys were found, and no marks detected, purge now */
|
|
if (anykey && !mark){
|
|
x = NULL;
|
|
xprev = x = NULL;
|
|
while ((x = xml_child_each(xt, x, CX_ELMNT)) != NULL) {
|
|
/* If it is key remove it here */
|
|
if (yt){
|
|
if ((iskey = yang_key_match((yang_node*)yt, xml_name(x))) < 0)
|
|
goto done;
|
|
if (iskey && xml_purge(x) < 0)
|
|
goto done;
|
|
x = xprev;
|
|
}
|
|
xprev = x;
|
|
}
|
|
}
|
|
retval = 0;
|
|
done:
|
|
if (upmark)
|
|
*upmark = mark;
|
|
return retval;
|
|
}
|
|
|
|
|
|
/*! Prune everything that passes test
|
|
* @param[in] xt XML tree with some node marked
|
|
* @param[in] flag Which flag to test for
|
|
* @param[in] test 1: test that flag is set, 0: test that flag is not set
|
|
* The function removes all branches that does not pass test
|
|
* @code
|
|
* xml_tree_prune_flagged(xt, XML_FLAG_MARK, 1, NULL);
|
|
* @endcode
|
|
*/
|
|
int
|
|
xml_tree_prune_flagged(cxobj *xt,
|
|
int flag,
|
|
int test)
|
|
{
|
|
int retval = -1;
|
|
cxobj *x;
|
|
cxobj *xprev;
|
|
|
|
x = NULL;
|
|
xprev = x = NULL;
|
|
while ((x = xml_child_each(xt, x, CX_ELMNT)) != NULL) {
|
|
if (xml_flag(x, flag) == test?flag:0){ /* Pass test means purge */
|
|
if (xml_purge(x) < 0)
|
|
goto done;
|
|
x = xprev;
|
|
continue;
|
|
}
|
|
if (xml_tree_prune_flagged(x, flag, test) < 0)
|
|
goto done;
|
|
xprev = x;
|
|
}
|
|
retval = 0;
|
|
done:
|
|
return retval;
|
|
}
|
|
|
|
/*! Add default values (if not set)
|
|
* @param[in] xt XML tree with some node marked
|
|
*/
|
|
int
|
|
xml_default(cxobj *xt,
|
|
void *arg)
|
|
{
|
|
int retval = -1;
|
|
yang_stmt *ys;
|
|
yang_stmt *y;
|
|
int i;
|
|
cxobj *xc;
|
|
cxobj *xb;
|
|
char *str;
|
|
|
|
if ((ys = (yang_stmt*)xml_spec(xt)) == NULL){
|
|
retval = 0;
|
|
goto done;
|
|
}
|
|
/* Check leaf defaults */
|
|
if (ys->ys_keyword == Y_CONTAINER || ys->ys_keyword == Y_LIST){
|
|
for (i=0; i<ys->ys_len; i++){
|
|
y = ys->ys_stmt[i];
|
|
if (y->ys_keyword != Y_LEAF)
|
|
continue;
|
|
assert(y->ys_cv);
|
|
if (!cv_flag(y->ys_cv, V_UNSET)){ /* Default value exists */
|
|
if (!xml_find(xt, y->ys_argument)){
|
|
if ((xc = xml_new(y->ys_argument, xt, y)) == NULL)
|
|
goto done;
|
|
if ((xb = xml_new("body", xc, NULL)) == NULL)
|
|
goto done;
|
|
xml_type_set(xb, CX_BODY);
|
|
if ((str = cv2str_dup(y->ys_cv)) == NULL){
|
|
clicon_err(OE_UNIX, errno, "cv2str_dup");
|
|
goto done;
|
|
}
|
|
if (xml_value_set(xb, str) < 0)
|
|
goto done;
|
|
free(str);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
xml_sort(xt, NULL);
|
|
retval = 0;
|
|
done:
|
|
return retval;
|
|
}
|
|
|
|
/*! Order XML children according to YANG
|
|
* @param[in] xt XML top of tree
|
|
*/
|
|
int
|
|
xml_order(cxobj *xt,
|
|
void *arg)
|
|
{
|
|
int retval = -1;
|
|
yang_stmt *y;
|
|
yang_stmt *yc;
|
|
int i;
|
|
int j0;
|
|
int j;
|
|
cxobj *xc;
|
|
cxobj *xj;
|
|
char *yname; /* yang child name */
|
|
char *xname; /* xml child name */
|
|
|
|
if ((y = (yang_stmt*)xml_spec(xt)) == NULL){
|
|
retval = 0;
|
|
goto done;
|
|
}
|
|
j0 = 0;
|
|
/* Go through yang node's children and ensure that the
|
|
* xml children follow this order.
|
|
* Do not order the list or leaf-list children (have same name).
|
|
*/
|
|
for (i=0; i<y->ys_len; i++){
|
|
yc = y->ys_stmt[i];
|
|
if (!yang_datanode(yc))
|
|
continue;
|
|
yname = yc->ys_argument;
|
|
/* First go thru xml children with same name in rest of list */
|
|
for (; j0<xml_child_nr(xt); j0++){
|
|
xc = xml_child_i(xt, j0);
|
|
if (xml_type(xc) != CX_ELMNT)
|
|
continue;
|
|
xname = xml_name(xc);
|
|
if (strcmp(xname, yname))
|
|
break;
|
|
}
|
|
/* Now we have children not with same name */
|
|
for (j=j0; j<xml_child_nr(xt); j++){
|
|
xc = xml_child_i(xt, j);
|
|
if (xml_type(xc) != CX_ELMNT)
|
|
continue;
|
|
xname = xml_name(xc);
|
|
if (strcmp(xname, yname))
|
|
continue;
|
|
/* reorder */
|
|
xj = xml_child_i(xt, j0);
|
|
xml_child_i_set(xt, j0, xc);
|
|
xml_child_i_set(xt, j, xj);
|
|
j0++;
|
|
}
|
|
}
|
|
retval = 0;
|
|
done:
|
|
return retval;
|
|
}
|
|
|
|
/*! Sanitize an xml tree: xml node has matching yang_stmt pointer
|
|
* @param[in] xt XML top of tree
|
|
*/
|
|
int
|
|
xml_sanity(cxobj *xt,
|
|
void *arg)
|
|
{
|
|
int retval = -1;
|
|
yang_stmt *ys;
|
|
char *name;
|
|
|
|
if ((ys = (yang_stmt*)xml_spec(xt)) == NULL){
|
|
retval = 0;
|
|
goto done;
|
|
}
|
|
name = xml_name(xt);
|
|
if (strstr(ys->ys_argument, name)==NULL){
|
|
clicon_err(OE_XML, 0, "xml node name '%s' does not match yang spec arg '%s'",
|
|
name, ys->ys_argument);
|
|
goto done;
|
|
}
|
|
retval = 0;
|
|
done:
|
|
return retval;
|
|
}
|
|
|
|
/*! Mark all nodes that are not configure data and set return
|
|
* @param[in] xt XML tree
|
|
* @param[out] arg If set, set to 1 as int* if not config data
|
|
*/
|
|
int
|
|
xml_non_config_data(cxobj *xt,
|
|
void *arg) /* Set to 1 if state node */
|
|
{
|
|
int retval = -1;
|
|
yang_stmt *ys;
|
|
|
|
if ((ys = (yang_stmt*)xml_spec(xt)) == NULL){
|
|
retval = 0;
|
|
goto done;
|
|
}
|
|
if (!yang_config(ys)){ /* config == false means state data: mark for remove */
|
|
xml_flag_set(xt, XML_FLAG_MARK);
|
|
if (arg)
|
|
(*(int*)arg) = 1;
|
|
}
|
|
retval = 0;
|
|
done:
|
|
return retval;
|
|
}
|
|
|
|
|
|
/*! Add yang specification backpoint to XML node
|
|
* @param[in] xt XML tree node
|
|
* @param[in] arg Yang spec
|
|
* @note This may be unnecessary if yspec us set on creation
|
|
* @note For subs to anyxml nodes will not have spec set
|
|
* @note No validation is done,... XXX
|
|
* @code
|
|
* xml_apply(xc, CX_ELMNT, xml_spec_populate, yspec)
|
|
* @endcode
|
|
*/
|
|
int
|
|
xml_spec_populate(cxobj *x,
|
|
void *arg)
|
|
{
|
|
int retval = -1;
|
|
yang_spec *yspec = (yang_spec*)arg;
|
|
yang_stmt *y=NULL; /* yang node */
|
|
|
|
if (xml_child_spec(xml_name(x), xml_parent(x), yspec, &y) < 0)
|
|
goto done;
|
|
#if 0
|
|
if ((xp = xml_parent(x)) != NULL &&
|
|
(yp = xml_spec(xp)) != NULL)
|
|
y = yang_find_datanode((yang_node*)yp, xml_name(x));
|
|
else
|
|
y = yang_find_topnode(yspec, name, YC_DATANODE); /* still NULL for config */
|
|
#endif
|
|
if (y)
|
|
xml_spec_set(x, y);
|
|
retval = 0;
|
|
done:
|
|
return retval;
|
|
}
|
|
|
|
/*! Translate from restconf api-path in cvv form to xml xpath
|
|
* eg a/b=c -> a/[b=c]
|
|
* @param[in] yspec Yang spec
|
|
* @param[in] pcvec api-path as cvec
|
|
* @param[in] pi Offset of cvec, where api-path starts
|
|
* @param[out] path The xpath as cbuf variable string, must be initializeed
|
|
* The api-path has some wierd encoding, use api_path2xpath() if you are
|
|
* confused.
|
|
* It works like this:
|
|
* Assume origin incoming path is
|
|
* "www.foo.com/restconf/a/b=c", pi is 2 and pcvec is:
|
|
* ["www.foo.com" "restconf" "a" "b=c"]
|
|
* which means the api-path is ["a" "b=c"] corresponding to "a/b=c"
|
|
* @code
|
|
* cbuf *xpath = cbuf_new();
|
|
* if (api_path2xpath_cvv(yspec, cvv, i, xpath)
|
|
* err;
|
|
* ... access xpath as cbuf_get(xpath)
|
|
* cbuf_free(xpath)
|
|
* @endcode
|
|
* @see api_path2xpath for string api-path argument
|
|
*/
|
|
int
|
|
api_path2xpath_cvv(yang_spec *yspec,
|
|
cvec *cvv,
|
|
int offset,
|
|
cbuf *xpath)
|
|
{
|
|
int retval = -1;
|
|
int i;
|
|
cg_var *cv;
|
|
char *name;
|
|
cvec *cvk = NULL; /* vector of index keys */
|
|
yang_stmt *y = NULL;
|
|
char *val;
|
|
char *v;
|
|
cg_var *cvi;
|
|
|
|
for (i=offset; i<cvec_len(cvv); i++){
|
|
cv = cvec_i(cvv, i);
|
|
name = cv_name_get(cv);
|
|
clicon_debug(1, "[%d] cvname:%s", i, name);
|
|
clicon_debug(1, "cv2str%d", cv2str(cv, NULL, 0));
|
|
if (i == offset){
|
|
if ((y = yang_find_topnode(yspec, name, YC_DATANODE)) == NULL){
|
|
clicon_err(OE_UNIX, errno, "No yang node found: %s", name);
|
|
goto done;
|
|
}
|
|
}
|
|
else{
|
|
assert(y!=NULL);
|
|
if ((y = yang_find_datanode((yang_node*)y, name)) == NULL){
|
|
clicon_err(OE_UNIX, errno, "No yang node found: %s", name);
|
|
goto done;
|
|
}
|
|
}
|
|
/* Check if has value, means '=' */
|
|
if (cv2str(cv, NULL, 0) > 0){
|
|
if ((val = cv2str_dup(cv)) == NULL)
|
|
goto done;
|
|
v = val;
|
|
/* XXX sync with yang */
|
|
while((v=index(v, ',')) != NULL){
|
|
*v = '\0';
|
|
v++;
|
|
}
|
|
cvk = y->ys_cvec; /* Use Y_LIST cache, see ys_populate_list() */
|
|
cvi = NULL;
|
|
/* Iterate over individual yang keys */
|
|
cprintf(xpath, "/%s", name);
|
|
v = val;
|
|
while ((cvi = cvec_each(cvk, cvi)) != NULL){
|
|
cprintf(xpath,
|
|
#ifdef COMPAT_XSL
|
|
"[%s=%s]",
|
|
#else
|
|
"[%s='%s']",
|
|
#endif
|
|
cv_string_get(cvi), v);
|
|
v += strlen(v)+1;
|
|
}
|
|
if (val)
|
|
free(val);
|
|
}
|
|
else{
|
|
cprintf(xpath, "%s%s", (i==offset?"":"/"), name);
|
|
}
|
|
}
|
|
retval = 0;
|
|
done:
|
|
return retval;
|
|
}
|
|
|
|
/*! Translate from restconf api-path to xml xpath
|
|
* eg a/b=c -> a/[b=c]
|
|
* @param[in] yspec Yang spec
|
|
* @param[in] str API-path as string
|
|
* @param[out] path The xpath as cbuf variable string, must be initializeed
|
|
* @code
|
|
* cbuf *xpath = cbuf_new();
|
|
* if (api_path2xpath(yspec, "a/b=c", xpath)
|
|
* err;
|
|
* ... access xpath as cbuf_get(xpath)
|
|
* cbuf_free(xpath)
|
|
* @endcode
|
|
*/
|
|
int
|
|
api_path2xpath(yang_spec *yspec,
|
|
char *api_path,
|
|
cbuf *xpath)
|
|
{
|
|
int retval = -1;
|
|
cvec *api_path_cvv = NULL;
|
|
|
|
/* rest url eg /album=ricky/foo */
|
|
if (str2cvec(api_path, '/', '=', &api_path_cvv) < 0)
|
|
goto done;
|
|
if (api_path2xpath_cvv(yspec, api_path_cvv, 0, xpath) < 0)
|
|
goto done;
|
|
retval = 0;
|
|
done:
|
|
if (api_path_cvv)
|
|
cvec_free(api_path_cvv);
|
|
return retval;
|
|
}
|
|
|
|
/*! Create xml tree from api-path as vector
|
|
* @param[in] vec APIpath as char* vector
|
|
* @param[in] nvec Length of vec
|
|
* @param[in] x0 Xpath tree so far
|
|
* @param[in] y0 Yang spec for x0
|
|
* @param[in] nodeclass Set to schema nodes, data nodes, etc
|
|
* @param[out] xpathp Resulting xml tree
|
|
* @param[out] ypathp Yang spec matching xpathp
|
|
* @see api_path2xml
|
|
*/
|
|
static int
|
|
api_path2xml_vec(char **vec,
|
|
int nvec,
|
|
cxobj *x0,
|
|
yang_node *y0,
|
|
yang_class nodeclass,
|
|
cxobj **xpathp,
|
|
yang_node **ypathp)
|
|
{
|
|
int retval = -1;
|
|
int j;
|
|
char *name;
|
|
char *restval = NULL;
|
|
char *restval_enc;
|
|
cxobj *xn = NULL; /* new */
|
|
cxobj *xb; /* body */
|
|
cvec *cvk = NULL; /* vector of index keys */
|
|
cg_var *cvi;
|
|
char *keyname;
|
|
char *val2;
|
|
char **valvec = NULL;
|
|
int nvalvec;
|
|
cxobj *x = NULL;
|
|
yang_stmt *y = NULL;
|
|
char *local;
|
|
|
|
if ((name = vec[0]) == NULL){
|
|
if (xpathp)
|
|
*xpathp = x0;
|
|
if (ypathp)
|
|
*ypathp = y0;
|
|
return 0;
|
|
} /* E.g "x=1,2" -> name:x restval=1,2 */
|
|
/* restval is RFC 3896 encoded */
|
|
if ((restval_enc = index(name, '=')) != NULL){
|
|
*restval_enc = '\0';
|
|
restval_enc++;
|
|
if (uri_percent_decode(restval_enc, &restval) < 0)
|
|
goto done;
|
|
}
|
|
/* Split into prefix and localname, ignore prefix for now */
|
|
if ((local = index(name, ':')) != NULL){
|
|
*local = '\0';
|
|
local++;
|
|
name = local;
|
|
}
|
|
if (y0->yn_keyword == Y_SPEC){ /* top-node */
|
|
y = yang_find_topnode((yang_spec*)y0, name, nodeclass);
|
|
}
|
|
else {
|
|
y = (nodeclass==YC_SCHEMANODE)?yang_find_schemanode((yang_node*)y0, name):
|
|
yang_find_datanode((yang_node*)y0, name);
|
|
}
|
|
if (y == NULL){
|
|
clicon_err(OE_YANG, errno, "No yang node found: %s", name);
|
|
goto done;
|
|
}
|
|
switch (y->ys_keyword){
|
|
case Y_LEAF_LIST:
|
|
if (0 && restval==NULL){
|
|
clicon_err(OE_XML, 0, "malformed key, expected '=<restval>'");
|
|
goto done;
|
|
}
|
|
if ((x = xml_new(y->ys_argument, x0, y)) == NULL)
|
|
goto done;
|
|
xml_type_set(x, CX_ELMNT);
|
|
if ((xb = xml_new("body", x, NULL)) == NULL)
|
|
goto done;
|
|
xml_type_set(xb, CX_BODY);
|
|
if (restval && xml_value_set(xb, restval) < 0)
|
|
goto done;
|
|
break;
|
|
case Y_LIST:
|
|
cvk = y->ys_cvec; /* Use Y_LIST cache, see ys_populate_list() */
|
|
if (valvec){
|
|
free(valvec);
|
|
valvec = NULL;
|
|
}
|
|
if (restval==NULL){
|
|
// XXX patch to allow for lists without restval to be backward compat
|
|
// clicon_err(OE_XML, 0, "malformed key, expected '=<restval>'");
|
|
// goto done;
|
|
}
|
|
else{
|
|
if ((valvec = clicon_strsep(restval, ",", &nvalvec)) == NULL)
|
|
goto done;
|
|
if (nvalvec > cvec_len(cvk)){
|
|
clicon_err(OE_XML, errno, "List %s key length mismatch", name);
|
|
goto done;
|
|
}
|
|
}
|
|
cvi = NULL;
|
|
/* create list object */
|
|
if ((x = xml_new(name, x0, y)) == NULL)
|
|
goto done;
|
|
xml_type_set(x, CX_ELMNT);
|
|
j = 0;
|
|
/* Create keys */
|
|
while ((cvi = cvec_each(cvk, cvi)) != NULL) {
|
|
keyname = cv_string_get(cvi);
|
|
if ((xn = xml_new(keyname, x, NULL)) == NULL)
|
|
goto done;
|
|
xml_type_set(xn, CX_ELMNT);
|
|
if ((xb = xml_new("body", xn, NULL)) == NULL)
|
|
goto done;
|
|
xml_type_set(xb, CX_BODY);
|
|
val2 = valvec?valvec[j++]:NULL;
|
|
if (xml_value_set(xb, val2) <0)
|
|
goto done;
|
|
}
|
|
break;
|
|
default: /* eg Y_CONTAINER, Y_LEAF */
|
|
if ((x = xml_new(name, x0, y)) == NULL)
|
|
goto done;
|
|
xml_type_set(x, CX_ELMNT);
|
|
break;
|
|
}
|
|
if (api_path2xml_vec(vec+1, nvec-1,
|
|
x, (yang_node*)y,
|
|
nodeclass,
|
|
xpathp, ypathp) < 0)
|
|
goto done;
|
|
retval = 0;
|
|
done:
|
|
if (restval)
|
|
free(restval);
|
|
if (valvec)
|
|
free(valvec);
|
|
return retval;
|
|
}
|
|
|
|
/*! Create xml tree from api-path
|
|
* @param[in] api_path API-path as defined in RFC 8040
|
|
* @param[in] yspec Yang spec
|
|
* @param[in,out] xtop Incoming XML tree
|
|
* @param[in] nodeclass Set to schema nodes, data nodes, etc
|
|
* @param[out] xbotp Resulting xml tree (end of xpath)
|
|
* @param[out] ybotp Yang spec matching xbotp
|
|
* @example
|
|
* api_path: /subif-entry=foo/subid
|
|
* xtop[in] <config/>
|
|
* xtop[out]:<config/> <subif-entry>
|
|
* <if-name>foo<if-name><subid/>>
|
|
* </subif-entry></config>
|
|
* xbotp: <subid/>
|
|
* ybotp: Y_LEAF subid
|
|
* @see api_path2xml_vec
|
|
*/
|
|
int
|
|
api_path2xml(char *api_path,
|
|
yang_spec *yspec,
|
|
cxobj *xtop,
|
|
yang_class nodeclass,
|
|
cxobj **xbotp,
|
|
yang_node **ybotp)
|
|
{
|
|
int retval = -1;
|
|
char **vec = NULL;
|
|
int nvec;
|
|
|
|
if (*api_path!='/'){
|
|
clicon_log(LOG_WARNING, "Invalid key: %s (must start with '/')", api_path);
|
|
goto ok;
|
|
}
|
|
if ((vec = clicon_strsep(api_path, "/", &nvec)) == NULL)
|
|
goto done;
|
|
/* Remove trailing '/'. Like in /a/ -> /a */
|
|
if (nvec > 1 && !strlen(vec[nvec-1]))
|
|
nvec--;
|
|
if (nvec < 1){
|
|
clicon_err(OE_XML, 0, "Malformed key: %s", api_path);
|
|
goto done;
|
|
}
|
|
nvec--; /* NULL-terminated */
|
|
if (api_path2xml_vec(vec+1, nvec,
|
|
xtop, (yang_node*)yspec, nodeclass,
|
|
xbotp, ybotp) < 0)
|
|
goto done;
|
|
ok:
|
|
retval = 0;
|
|
done:
|
|
if (vec)
|
|
free(vec);
|
|
return retval;
|
|
}
|
|
|
|
/*! Merge a base tree x0 with x1 with yang spec y
|
|
* @param[in] x0 Base xml tree (can be NULL in add scenarios)
|
|
* @param[in] y0 Yang spec corresponding to xml-node x0. NULL if x0 is NULL
|
|
* @param[in] x0p Parent of x0
|
|
* @param[in] x1 xml tree which modifies base
|
|
* @param[out] reason If retval=0 a malloced string
|
|
* @retval 0 OK. If reason is set, Yang error
|
|
* @retval -1 Error
|
|
* Assume x0 and x1 are same on entry and that y is the spec
|
|
* @see put in clixon_keyvalue.c
|
|
*/
|
|
static int
|
|
xml_merge1(cxobj *x0,
|
|
yang_node *y0,
|
|
cxobj *x0p,
|
|
cxobj *x1,
|
|
char **reason)
|
|
{
|
|
int retval = -1;
|
|
char *x1name;
|
|
char *x1cname; /* child name */
|
|
cxobj *x0c; /* base child */
|
|
cxobj *x0b; /* base body */
|
|
cxobj *x1c; /* mod child */
|
|
char *x1bstr; /* mod body string */
|
|
yang_stmt *yc; /* yang child */
|
|
cbuf *cbr = NULL; /* Reason buffer */
|
|
|
|
assert(x1 && xml_type(x1) == CX_ELMNT);
|
|
assert(y0);
|
|
|
|
x1name = xml_name(x1);
|
|
if (y0->yn_keyword == Y_LEAF_LIST || y0->yn_keyword == Y_LEAF){
|
|
x1bstr = xml_body(x1);
|
|
if (x0==NULL){
|
|
if ((x0 = xml_new(x1name, x0p, (yang_stmt*)y0)) == NULL)
|
|
goto done;
|
|
if (x1bstr){ /* empty type does not have body */
|
|
if ((x0b = xml_new("body", x0, NULL)) == NULL)
|
|
goto done;
|
|
xml_type_set(x0b, CX_BODY);
|
|
}
|
|
}
|
|
if (x1bstr){
|
|
if ((x0b = xml_body_get(x0)) == NULL){
|
|
if ((x0b = xml_new("body", x0, NULL)) == NULL)
|
|
goto done;
|
|
xml_type_set(x0b, CX_BODY);
|
|
}
|
|
if (xml_value_set(x0b, x1bstr) < 0)
|
|
goto done;
|
|
}
|
|
|
|
} /* if LEAF|LEAF_LIST */
|
|
else { /* eg Y_CONTAINER, Y_LIST */
|
|
if (x0==NULL){
|
|
if ((x0 = xml_new(x1name, x0p, (yang_stmt*)y0)) == NULL)
|
|
goto done;
|
|
}
|
|
/* Loop through children of the modification tree */
|
|
x1c = NULL;
|
|
while ((x1c = xml_child_each(x1, x1c, CX_ELMNT)) != NULL) {
|
|
x1cname = xml_name(x1c);
|
|
/* Get yang spec of the child */
|
|
if ((yc = yang_find_datanode(y0, x1cname)) == NULL){
|
|
if (reason){
|
|
if ((cbr = cbuf_new()) == NULL){
|
|
clicon_err(OE_XML, errno, "cbuf_new");
|
|
goto done;
|
|
}
|
|
cprintf(cbr, "XML node %s/%s has no corresponding yang specification (Invalid XML or wrong Yang spec?", xml_name(x1), x1cname);
|
|
if ((*reason = strdup(cbuf_get(cbr))) == NULL){
|
|
clicon_err(OE_UNIX, errno, "strdup");
|
|
goto done;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
/* See if there is a corresponding node in the base tree */
|
|
x0c = NULL;
|
|
if (yc && match_base_child(x0, x1c, &x0c, yc) < 0)
|
|
goto done;
|
|
if (xml_merge1(x0c, (yang_node*)yc, x0, x1c, reason) < 0)
|
|
goto done;
|
|
if (*reason != NULL)
|
|
goto ok;
|
|
}
|
|
} /* else Y_CONTAINER */
|
|
ok:
|
|
retval = 0;
|
|
done:
|
|
if (cbr)
|
|
cbuf_free(cbr);
|
|
return retval;
|
|
}
|
|
|
|
/*! Merge XML trees x1 into x0 according to yang spec yspec
|
|
* @param[in] x0 Base xml tree (can be NULL in add scenarios)
|
|
* @param[in] x1 xml tree which modifies base
|
|
* @param[in] yspec Yang spec
|
|
* @param[out] reason If retval=0, reason is set. Malloced. Needs to be freed by caller
|
|
* @retval 0 OK. If reason is set, Yang error
|
|
* @retval -1 Error
|
|
* @note both x0 and x1 need to be top-level trees
|
|
* @see text_modify_top as more generic variant (in datastore text)
|
|
* @note returns -1 if YANG do not match, you may want to have a softer error
|
|
*/
|
|
int
|
|
xml_merge(cxobj *x0,
|
|
cxobj *x1,
|
|
yang_spec *yspec,
|
|
char **reason)
|
|
{
|
|
int retval = -1;
|
|
char *x1cname; /* child name */
|
|
cxobj *x0c; /* base child */
|
|
cxobj *x1c; /* mod child */
|
|
yang_stmt *yc;
|
|
cbuf *cbr = NULL; /* Reason buffer */
|
|
|
|
/* Loop through children of the modification tree */
|
|
x1c = NULL;
|
|
while ((x1c = xml_child_each(x1, x1c, CX_ELMNT)) != NULL) {
|
|
x1cname = xml_name(x1c);
|
|
/* Get yang spec of the child */
|
|
if ((yc = yang_find_topnode(yspec, x1cname, YC_DATANODE)) == NULL){
|
|
if (reason){
|
|
if ((cbr = cbuf_new()) == NULL){
|
|
clicon_err(OE_XML, errno, "cbuf_new");
|
|
goto done;
|
|
}
|
|
cprintf(cbr, "XML node %s/%s has no corresponding yang specification (Invalid XML or wrong Yang spec?", xml_name(x1), x1cname);
|
|
if ((*reason = strdup(cbuf_get(cbr))) == NULL){
|
|
clicon_err(OE_UNIX, errno, "strdup");
|
|
goto done;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
/* See if there is a corresponding node in the base tree */
|
|
if (match_base_child(x0, x1c, &x0c, yc) < 0)
|
|
goto done;
|
|
if (xml_merge1(x0c, (yang_node*)yc, x0, x1c, reason) < 0)
|
|
goto done;
|
|
if (*reason != NULL)
|
|
break;
|
|
}
|
|
retval = 0; /* OK */
|
|
done:
|
|
if (cbr)
|
|
cbuf_free(cbr);
|
|
return retval;
|
|
}
|
|
|
|
/*! Get integer value from xml node from yang enumeration
|
|
* @param[in] node XML node in a tree
|
|
* @param[out] val Integer value returned
|
|
* @retval 0 OK, value parsed
|
|
* @retval -1 Error, value not obtained or parsed, no reason given
|
|
* @note assume yang spec set
|
|
* @note The function only returns assigned values, but according to RFC:
|
|
If a value is not specified, then one will be automatically assigned.
|
|
If the "enum" substatement is the first one defined, the assigned
|
|
value is zero (0); otherwise, the assigned value is one greater than
|
|
the current highest enum value (i.e., the highest enum value,
|
|
* Thanks: Matthew Smith
|
|
*/
|
|
int
|
|
yang_enum_int_value(cxobj *node,
|
|
int32_t *val)
|
|
{
|
|
int retval = -1;
|
|
yang_spec *yspec;
|
|
yang_stmt *ys;
|
|
yang_stmt *ytype;
|
|
yang_stmt *yrestype; /* resolved type */
|
|
yang_stmt *yenum;
|
|
yang_stmt *yval;
|
|
char *reason = NULL;
|
|
|
|
if (node == NULL)
|
|
goto done;
|
|
if ((ys = (yang_stmt *) xml_spec(node)) == NULL)
|
|
goto done;
|
|
if ((yspec = ys_spec(ys)) == NULL)
|
|
goto done;
|
|
if ((ytype = yang_find((yang_node *)ys, Y_TYPE, NULL)) == NULL)
|
|
goto done;
|
|
if (yang_type_resolve(ys, ytype, &yrestype,
|
|
NULL, NULL, NULL, NULL, NULL) < 0)
|
|
goto done;
|
|
if (yrestype==NULL || strcmp(yrestype->ys_argument, "enumeration"))
|
|
goto done;
|
|
if ((yenum = yang_find((yang_node *)yrestype, Y_ENUM, xml_body(node))) == NULL)
|
|
goto done;
|
|
/* Should assign value if yval not found */
|
|
if ((yval = yang_find((yang_node *)yenum, Y_VALUE, NULL)) == NULL)
|
|
goto done;
|
|
/* reason is string containing why int could not be parsed */
|
|
if (parse_int32(yval->ys_argument, val, &reason) < 0)
|
|
goto done;
|
|
retval = 0;
|
|
done:
|
|
return retval;
|
|
}
|
|
|
|
|
|
/*
|
|
* Turn this on for uni-test programs
|
|
* Usage: clixon_string join
|
|
* Example compile:
|
|
gcc -g -o clixon_xml_map -I. -I../clixon ./clixon_xml_map.c -lclixon -lcligen
|
|
* Example run:
|
|
/interfaces/interface=%s/name --> interfaces/interface/name
|
|
/interfaces/interface=%s/ipv4/address=%s e --> /interfaces/interface=e/ipv4/address
|
|
/interfaces/interface=%s,%s/ipv4/address=%s e f --> /interfaces/interface=e,f/ipv4/address
|
|
/interfaces/interface=%s/ipv4/address=%s,%s e f --> /interfaces/interface=e/ipv4/address=f
|
|
|
|
/interfaces/interface=%s/ipv4/address=%s/prefix-length eth 1.2.3.4 -->
|
|
/interfaces/interface=eth/ipv4/address=1.2.3.4/prefix-length
|
|
|
|
*/
|
|
#if 0 /* Test program */
|
|
|
|
static int
|
|
usage(char *argv0)
|
|
{
|
|
fprintf(stderr, "usage:%s <api_path_fmt> <cv0>, <cv1>,...\n", argv0);
|
|
exit(0);
|
|
}
|
|
|
|
int
|
|
main(int argc, char **argv)
|
|
{
|
|
int nvec;
|
|
char **vec;
|
|
char *str0;
|
|
char *str1;
|
|
int i;
|
|
char *api_path_fmt;
|
|
cg_var *cv;
|
|
cvec *cvv;
|
|
char *api_path=NULL;
|
|
|
|
clicon_log_init(__FILE__, LOG_INFO, CLICON_LOG_STDERR);
|
|
if (argc < 2){
|
|
usage(argv[0]);
|
|
return 0;
|
|
}
|
|
api_path_fmt = argv[1];
|
|
if ((cvv = cvec_new(0)) == NULL){
|
|
perror("cvec_new");
|
|
return -1;
|
|
}
|
|
cv = cv_new(CGV_STRING);
|
|
cv_string_set(cv, "CLI base command");
|
|
cvec_append_var(cvv, cv);
|
|
for (i=2; i<argc; i++){
|
|
cv = cv_new(CGV_STRING);
|
|
if (cv_parse(argv[i], cv) < 0){
|
|
perror("cv_parse");
|
|
return -1;
|
|
}
|
|
cvec_append_var(cvv, cv);
|
|
}
|
|
if (api_path_fmt2api_path(api_path_fmt, cvv, &api_path) < 0)
|
|
return -1;
|
|
printf("%s\n", api_path);
|
|
return 0;
|
|
}
|
|
|
|
#endif /* Test program */
|
|
|
|
|