1808015cf6
- Reverted removal of CLICON_RESTCONF_PATH since it was used there Misc fixes: initialized variables, docs, removed obsolete --enable-optyang
236 lines
6.2 KiB
C
236 lines
6.2 KiB
C
/*
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*
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***** BEGIN LICENSE BLOCK *****
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Copyright (C) 2009-2016 Olof Hagsand and Benny Holmgren
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Copyright (C) 2017-2019 Olof Hagsand
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Copyright (C) 2020-2021 Olof Hagsand and Rubicon Communications, LLC (Netgate)
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This file is part of CLIXON.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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Alternatively, the contents of this file may be used under the terms of
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the GNU General Public License Version 3 or later (the "GPL"),
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in which case the provisions of the GPL are applicable instead
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of those above. If you wish to allow use of your version of this file only
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under the terms of the GPL, and not to allow others to
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use your version of this file under the terms of Apache License version 2,
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indicate your decision by deleting the provisions above and replace them with
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the notice and other provisions required by the GPL. If you do not delete
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the provisions above, a recipient may use your version of this file under
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the terms of any one of the Apache License version 2 or the GPL.
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***** END LICENSE BLOCK *****
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* Utility for compiling regexp and checking validity
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* gcc -I /usr/include/libxml2 regex.c -o regex -lxml2
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* @see http://www.w3.org/TR/2004/REC-xmlschema-2-20041028
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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 <unistd.h> /* unistd */
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#include <string.h>
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#include <regex.h> /* posix regex */
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#include <syslog.h>
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#include <stdlib.h>
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#include <limits.h>
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#include <signal.h>
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#ifdef HAVE_LIBXML2 /* Actually it should check for a header file */
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#include <libxml/xmlregexp.h>
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#endif
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/* cligen */
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#include <cligen/cligen.h>
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/* clixon */
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#include "clixon/clixon.h"
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/*! libxml2 regex implementation
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* @see http://www.w3.org/TR/2004/REC-xmlschema-2-20041028
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* @retval -1 Error
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* @retval 0 Not match
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* @retval 1 Match
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*/
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static int
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regex_libxml2(char *regexp0,
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char *content0,
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int nr,
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int debug)
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{
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int retval = -1;
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#ifdef HAVE_LIBXML2
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xmlChar *regexp = (xmlChar*)regexp0;
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xmlChar *content = (xmlChar*)content0;
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xmlRegexp *xrp = NULL;
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int ret;
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int i;
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if ((xrp = xmlRegexpCompile(regexp)) == NULL)
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goto done;
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if (nr==0)
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return 1;
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for (i=0; i<nr; i++)
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if ((ret = xmlRegexpExec(xrp, content)) < 0)
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goto done;
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return ret;
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done:
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#endif
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return retval;
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}
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static int
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regex_posix(char *regexp,
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char *content,
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int nr,
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int debug)
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{
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int retval = -1;
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char *posix = NULL;
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char pattern[1024];
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int status = 0;
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regex_t re;
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char errbuf[1024];
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int len0;
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int i;
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if (regexp_xsd2posix(regexp, &posix) < 0)
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goto done;
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clicon_debug(1, "posix: %s", posix);
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len0 = strlen(posix);
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if (len0 > sizeof(pattern)-5){
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fprintf(stderr, "pattern too long\n");
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return -1;
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}
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/* note following two lines trigger [-Wstringop-truncation] warnings, but see no actual error */
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strncpy(pattern, "^(", 2);
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strncpy(pattern+2, posix, sizeof(pattern)-2);
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strncat(pattern, ")$", sizeof(pattern)-len0-1);
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if (regcomp(&re, pattern, REG_NOSUB|REG_EXTENDED) != 0)
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return(0); /* report error */
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if (nr==0)
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return 1;
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for (i=0; i<nr; i++)
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status = regexec(&re, content, (size_t) 0, NULL, 0);
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regfree(&re);
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if (status != 0) {
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regerror(status, &re, errbuf, sizeof(errbuf)); /* XXX error is ignored */
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return(0); /* report error */
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}
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return(1);
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done:
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if (posix)
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free(posix);
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return retval;
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}
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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]\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-p \txsd->posix translation regexp (default)\n"
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"\t-x \tlibxml2 regexp (alternative to -p)\n"
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"\t-n <nr> \tIterate content match (default: 1, 0: no match only compile)\n"
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"\t-r <regexp> \tregexp (mandatory)\n"
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"\t-c <string> \tValue content string(mandatory if -n > 0)\n",
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argv0
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);
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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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char *argv0 = argv[0];
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int c;
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char *regexp = NULL;
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char *content = NULL;
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int ret = 0;
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int nr = 1;
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int mode = 0; /* 0 is posix, 1 is libxml */
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int dbg = 0;
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optind = 1;
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opterr = 0;
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while ((c = getopt(argc, argv, "hD:pxn:r:c:")) != -1)
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switch (c) {
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case 'h':
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usage(argv0);
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break;
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case 'D':
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if (sscanf(optarg, "%d", &dbg) != 1)
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usage(argv0);
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break;
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case 'p': /* xsd->posix */
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mode = 0;
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break;
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case 'n': /* Number of iterations */
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if ((nr = atoi(optarg)) < 0)
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usage(argv0);
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break;
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case 'x': /* libxml2 */
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mode = 1;
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break;
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case 'r': /* regexp */
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regexp = optarg;
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break;
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case 'c': /* value content string */
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content = optarg;
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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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clicon_log_init(__FILE__, dbg?LOG_DEBUG:LOG_INFO, CLICON_LOG_STDERR);
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clicon_debug_init(dbg, NULL);
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if (regexp == NULL){
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fprintf(stderr, "-r mandatory\n");
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usage(argv0);
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}
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if (nr > 0 && content == NULL){
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fprintf(stderr, "-c mandatory (if -n > 0)\n");
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usage(argv0);
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}
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if (mode != 0 && mode != 1){
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fprintf(stderr, "Neither posix or libxml2 set\n");
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usage(argv0);
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}
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clicon_debug(1, "regexp:%s", regexp);
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clicon_debug(1, "content:%s", content);
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if (mode == 0){
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if ((ret = regex_posix(regexp, content, nr, dbg)) < 0)
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goto done;
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}
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else if (mode == 1){
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if ((ret = regex_libxml2(regexp, content, nr, dbg)) < 0)
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goto done;
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}
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else
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usage(argv0);
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fprintf(stdout, "%d\n", ret);
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exit(ret);
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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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