298 lines
8.5 KiB
C
298 lines
8.5 KiB
C
/*
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*
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***** BEGIN LICENSE BLOCK *****
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Copyright (C) 2023 Olof Hagsand
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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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* @note Paths to bins, such as GREP_BIN, are detected in configure.ac
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* @note These functions are normally run in a forked sub-process as spawned in cligen_eval()
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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 <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <signal.h>
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#include <errno.h>
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#include <stdarg.h>
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#include <time.h>
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#include <ctype.h>
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#include <unistd.h>
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#include <dirent.h>
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#include <syslog.h>
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#include <arpa/inet.h>
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#include <netinet/in.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <sys/wait.h>
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#include <sys/param.h>
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#include <sys/mount.h>
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#include <pwd.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/clixon.h>
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#include "clixon_cli_api.h"
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/* Grep pipe output function
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*
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* @param[in] h Clixon handle
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* @param[in] cmd Command to exec
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* @param[in] option Option to command (or NULL)
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* @param[in] value Command argument value (or NULL)
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* @code
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* grep <arg:rest>, grep_fn("-e", "arg");
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* @endcode
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*/
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int
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pipe_arg_fn(clicon_handle h,
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char *cmd,
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char *option,
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char *value)
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{
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int retval = -1;
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struct stat fstat;
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char **argv = NULL;
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int i;
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if (cmd == NULL || strlen(cmd) == 0){
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clicon_err(OE_PLUGIN, EINVAL, "cmd '%s' NULL or empty", cmd);
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goto done;
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}
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if (stat(cmd, &fstat) < 0) {
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clicon_err(OE_UNIX, errno, "stat(%s)", cmd);
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goto done;
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}
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if (!S_ISREG(fstat.st_mode)){
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clicon_err(OE_UNIX, errno, "%s is not a regular file", cmd);
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goto done;
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}
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if ((argv = calloc(4, sizeof(char *))) == NULL){
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clicon_err(OE_UNIX, errno, "calloc");
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goto done;
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}
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i = 0;
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argv[i++] = cmd;
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argv[i++] = option;
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argv[i++] = value;
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argv[i++] = NULL;
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retval = execv(cmd, argv);
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done:
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if (argv)
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free(argv);
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return retval;
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}
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/* Grep pipe output function
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*
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* @param[in] h Clicon handle
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* @param[in] cvv Vector of cli string and instantiated variables
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* @param[in] argv String vector of options. Format: <option> <value>
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*/
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int
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pipe_grep_fn(clicon_handle h,
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cvec *cvv,
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cvec *argv)
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{
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int retval = -1;
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char *value = NULL;
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cg_var *cv;
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char *str;
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char *option = NULL;
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char *argname = NULL;
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if (cvec_len(argv) != 2){
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clicon_err(OE_PLUGIN, EINVAL, "Received %d arguments. Expected: <option> <argname>", cvec_len(argv));
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goto done;
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}
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if ((cv = cvec_i(argv, 0)) != NULL &&
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(str = cv_string_get(cv)) != NULL &&
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strlen(str))
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option = str;
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if ((cv = cvec_i(argv, 1)) != NULL &&
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(str = cv_string_get(cv)) != NULL &&
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strlen(str))
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argname = str;
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if (argname && strlen(argname)){
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if ((cv = cvec_find_var(cvv, argname)) != NULL &&
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(str = cv_string_get(cv)) != NULL &&
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strlen(str))
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value = str;
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}
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retval = pipe_arg_fn(h, GREP_BIN, option, value);
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done:
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return retval;
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}
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/*! wc pipe output function
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*
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* @param[in] h Clicon handle
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* @param[in] cvv Vector of cli string and instantiated variables
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* @param[in] argv String vector of options. Format: <option> <value>
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*/
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int
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pipe_wc_fn(clicon_handle h,
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cvec *cvv,
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cvec *argv)
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{
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int retval = -1;
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cg_var *cv;
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char *str;
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char *option = NULL;
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if (cvec_len(argv) != 1){
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clicon_err(OE_PLUGIN, EINVAL, "Received %d arguments. Expected: <option>", cvec_len(argv));
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goto done;
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}
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if ((cv = cvec_i(argv, 0)) != NULL &&
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(str = cv_string_get(cv)) != NULL &&
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strlen(str))
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option = str;
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retval = pipe_arg_fn(h, WC_BIN, option, NULL);
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done:
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return retval;
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}
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/*! wc pipe output function
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*
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* @param[in] h Clicon handle
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* @param[in] cvv Vector of cli string and instantiated variables
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* @param[in] argv String vector of options. Format: <option> <value>
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*/
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int
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pipe_tail_fn(clicon_handle h,
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cvec *cvv,
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cvec *argv)
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{
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return pipe_arg_fn(h, TAIL_BIN, "-5", NULL);
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}
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/*! Output pipe translate from xml to other format: json,text,
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*
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* @param[in] h Clicon handle
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* @param[in] cvv Vector of cli string and instantiated variables
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* @param[in] argv String vector of show options, format:
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* <format> "text"|"xml"|"json"|"cli"|"netconf" (see format_enum), default: xml
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* <pretty> true|false: pretty-print or not
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* <prepend> CLI prefix: prepend before cli syntax output
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* @see cli_show_auto_devs
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*/
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int
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pipe_showas_fn(clicon_handle h,
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cvec *cvv,
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cvec *argv)
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{
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int retval = -1;
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cxobj *xt = NULL;
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int argc = 0;
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enum format_enum format = FORMAT_XML;
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int ybind = 1;
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yang_stmt *yspec;
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int pretty = 1;
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char *prepend = NULL;
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if (cvec_len(argv) < 1 || cvec_len(argv) > 3){
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clicon_err(OE_PLUGIN, EINVAL, "Received %d arguments. Expected:: <format> [<pretty> [<prepend>]]", cvec_len(argv));
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goto done;
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}
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if (cvec_len(argv) > argc){
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fprintf(stderr, "%s formatstr:%s\n", __FUNCTION__, cv_string_get(cvec_i(argv, argc)));
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if (cli_show_option_format(argv, argc++, &format) < 0)
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goto done;
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}
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if (cvec_len(argv) > argc){
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if (cli_show_option_bool(argv, argc++, &pretty) < 0)
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goto done;
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}
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if (cvec_len(argv) > argc){
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prepend = cv_string_get(cvec_i(argv, argc++));
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}
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if (ybind){
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yspec = clicon_dbspec_yang(h);
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if (clixon_xml_parse_file(stdin, YB_MODULE, yspec, &xt, NULL) < 0)
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goto done;
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}
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else if (clixon_xml_parse_file(stdin, YB_NONE, NULL, &xt, NULL) < 0)
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goto done;
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fprintf(stderr, "%s format:%d\n", __FUNCTION__, format);
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switch (format){
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case FORMAT_XML:
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if (clixon_xml2file(stdout, xt, 0, pretty, NULL, cligen_output, 1, 0) < 0)
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goto done;
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break;
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case FORMAT_JSON:
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if (clixon_json2file(stdout, xt, pretty, cligen_output, 1, 0) < 0)
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goto done;
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break;
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case FORMAT_TEXT:
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if (clixon_txt2file(stdout, xt, 0, cligen_output, 1, 1) < 0)
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goto done;
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break;
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case FORMAT_CLI:
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if (clixon_cli2file(h, stdout, xt, prepend, cligen_output, 1) < 0) /* cli syntax */
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goto done;
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break;
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default:
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break;
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}
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retval = 0;
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done:
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if (xt)
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xml_free(xt);
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return retval;
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}
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/*! Test cli callback calls cligen_output with output lines as given by function arguments
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*
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* Only for test or debugging to generate output to eg cligen_output scrolling
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* Example:
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* a, printlines_fn("line1 abc", "line2 def");
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*/
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int
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output_fn(cligen_handle handle,
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cvec *cvv,
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cvec *argv)
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{
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cg_var *cv;
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cv = NULL;
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while ((cv = cvec_each(argv, cv)) != NULL){
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cligen_output(stdout, "%s\n", cv_string_get(cv));
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}
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return 0;
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}
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