7ad16bd84b
* Added experimental code for optizing XPath search using binary search. * Enable with XPATH_LIST_OPTIMIZE * Changed `clicon_rpc_generate_error(msg, xerr)` to `clicon_rpc_generate_error(xerr, msg, arg)`
268 lines
7.2 KiB
C
268 lines
7.2 KiB
C
/*
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*
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***** BEGIN LICENSE BLOCK *****
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Copyright (C) 2009-2019 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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* XML support functions.
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* @see https://www.w3.org/TR/2008/REC-xml-20081126
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* https://www.w3.org/TR/2009/REC-xml-names-20091208
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* The function can do yang validation, process xml and json, etc.
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* On success, nothing is printed and exitcode 0
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* On failure, an error is printed on stderr and exitcode != 0
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* Failure error prints are different, it would be nice to make them more
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* uniform. (see clicon_rpc_generate_error)
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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 <string.h>
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#include <limits.h>
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#include <stdint.h>
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#include <syslog.h>
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#include <fcntl.h>
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#include <sys/time.h>
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#include <sys/stat.h>
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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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static int
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usage(char *argv0)
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{
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fprintf(stderr, "usage:%s [options] with xml on stdin (unless -f)\n"
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"where options are\n"
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"\t-h \t\tHelp\n"
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"\t-D <level> \tDebug\n"
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"\t-f <file>\tXML input file (overrides stdin)\n"
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"\t-J \t\tInput as JSON\n"
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"\t-j \t\tOutput as JSON\n"
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"\t-l <s|e|o> \tLog on (s)yslog, std(e)rr, std(o)ut (stderr is default)\n"
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"\t-o \t\tOutput the file\n"
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"\t-v \t\tValidate the result in terms of Yang model (requires -y)\n"
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"\t-p \t\tPretty-print output\n"
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"\t-y <filename> \tYang filename or dir (load all files)\n"
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"\t-Y <dir> \tYang dirs (can be several)\n"
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,
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argv0);
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exit(0);
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}
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int
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main(int argc,
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char **argv)
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{
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int retval = -1;
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cxobj *xt = NULL;
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cxobj *xc;
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cbuf *cb = cbuf_new();
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int c;
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int logdst = CLICON_LOG_STDERR;
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int jsonin = 0;
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int jsonout = 0;
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char *input_filename = NULL;
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char *yang_file_dir = NULL;
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yang_stmt *yspec = NULL;
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cxobj *xerr = NULL; /* malloced must be freed */
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int ret;
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int pretty = 0;
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int validate = 0;
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int output = 0;
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clicon_handle h;
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struct stat st;
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int fd = 0; /* stdin */
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cxobj *xcfg = NULL;
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cbuf *cbret = NULL;
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/* In the startup, logs to stderr & debug flag set later */
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clicon_log_init(__FILE__, LOG_INFO, CLICON_LOG_STDERR);
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if ((h = clicon_handle_init()) == NULL)
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goto done;
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xcfg = xml_new("clixon-config", NULL, NULL);
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clicon_conf_xml_set(h, xcfg);
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optind = 1;
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opterr = 0;
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while ((c = getopt(argc, argv, "hD:f:Jjl:pvoy:Y:")) != -1)
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switch (c) {
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case 'h':
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usage(argv[0]);
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break;
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case 'D':
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if (sscanf(optarg, "%d", &debug) != 1)
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usage(argv[0]);
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break;
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case 'f':
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input_filename = optarg;
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break;
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case 'J':
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jsonin++;
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break;
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case 'j':
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jsonout++;
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break;
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case 'l': /* Log destination: s|e|o|f */
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if ((logdst = clicon_log_opt(optarg[0])) < 0)
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usage(argv[0]);
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break;
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case 'o':
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output++;
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break;
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case 'v':
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validate++;
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break;
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case 'p':
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pretty++;
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break;
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case 'y':
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yang_file_dir = optarg;
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break;
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case 'Y':
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if (clicon_option_add(h, "CLICON_YANG_DIR", optarg) < 0)
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goto done;
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break;
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default:
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usage(argv[0]);
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break;
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}
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if (validate && !yang_file_dir){
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fprintf(stderr, "-v requires -y\n");
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usage(argv[0]);
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}
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clicon_log_init(__FILE__, debug?LOG_DEBUG:LOG_INFO, logdst);
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/* 1. Parse yang */
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if (yang_file_dir){
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if ((yspec = yspec_new()) == NULL)
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goto done;
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if (stat(yang_file_dir, &st) < 0){
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clicon_err(OE_YANG, errno, "%s not found", yang_file_dir);
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goto done;
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}
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if (S_ISDIR(st.st_mode)){
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if (yang_spec_load_dir(h, yang_file_dir, yspec) < 0)
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goto done;
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}
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else{
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if (yang_spec_parse_file(h, yang_file_dir, yspec) < 0)
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goto done;
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}
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}
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if (input_filename){
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if ((fd = open(input_filename, O_RDONLY)) < 0){
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clicon_err(OE_YANG, errno, "open(%s)", input_filename);
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goto done;
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}
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}
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/* 2. Parse data (xml/json) */
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if (jsonin){
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if ((ret = json_parse_file(fd, yspec, &xt, &xerr)) < 0)
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goto done;
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if (ret == 0){
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clicon_rpc_generate_error(xerr, "util_xml", NULL);
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goto done;
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}
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}
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else{
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if (xml_parse_file(fd, "</config>", NULL, &xt) < 0){
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fprintf(stderr, "xml parse error: %s\n", clicon_err_reason);
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goto done;
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}
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}
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/* Dump data structures (for debug) */
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if (debug){
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cbuf_reset(cb);
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xmltree2cbuf(cb, xt, 0);
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fprintf(stderr, "%s\n", cbuf_get(cb));
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cbuf_reset(cb);
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}
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/* 3. Validate data (if yspec) */
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if (validate){
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xc = xml_child_i(xt, 0);
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/* Populate */
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if (xml_apply0(xc, CX_ELMNT, xml_spec_populate, yspec) < 0)
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goto done;
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/* Sort */
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if (xml_apply0(xc, CX_ELMNT, xml_sort, h) < 0)
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goto done;
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/* Add default values */
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if (xml_apply(xc, CX_ELMNT, xml_default, h) < 0)
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goto done;
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if (xml_apply0(xc, -1, xml_sort_verify, h) < 0)
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clicon_log(LOG_NOTICE, "%s: sort verify failed", __FUNCTION__);
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if ((ret = xml_yang_validate_all_top(h, xc, &xerr)) < 0)
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goto done;
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if (ret > 0 && (ret = xml_yang_validate_add(h, xc, &xerr)) < 0)
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goto done;
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if (ret == 0){
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if ((cbret = cbuf_new()) ==NULL){
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clicon_err(OE_XML, errno, "cbuf_new");
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goto done;
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}
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if (netconf_err2cb(xerr, cbret) < 0)
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goto done;
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fprintf(stderr, "xml validation error: %s\n", cbuf_get(cbret));
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goto done;
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}
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}
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/* 4. Output data (xml/json) */
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if (output){
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xc = NULL;
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while ((xc = xml_child_each(xt, xc, -1)) != NULL)
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if (jsonout)
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xml2json_cbuf(cb, xc, pretty); /* print xml */
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else
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clicon_xml2cbuf(cb, xc, 0, pretty, -1); /* print xml */
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fprintf(stdout, "%s", cbuf_get(cb));
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fflush(stdout);
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}
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retval = 0;
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done:
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if (cbret)
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cbuf_free(cbret);
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if (xt)
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xml_free(xt);
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if (cb)
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cbuf_free(cb);
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return retval;
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}
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