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clixon/apps/cli/cli_auto.c
Colin Baumgarten 60fdb65ee0 cli_auto_edit: Fix data below mountpoint cannot be edited 
Without this fix, every edit affects the mountpoint destination
module directly instead of the same module inside of its mountpoint
container.
2024-05-07 12:25:43 +02:00

605 lines
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/*
*
***** BEGIN LICENSE BLOCK *****
Copyright (C) 2009-2016 Olof Hagsand and Benny Holmgren
Copyright (C) 2017-2019 Olof Hagsand
Copyright (C) 2020-2022 Olof Hagsand and Rubicon Communications, LLC(Netgate)
This file is part of CLIXON.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
Alternatively, the contents of this file may be used under the terms of
the GNU General Public License Version 3 or later (the "GPL"),
in which case the provisions of the GPL are applicable instead
of those above. If you wish to allow use of your version of this file only
under the terms of the GPL, and not to allow others to
use your version of this file under the terms of Apache License version 2,
indicate your decision by deleting the provisions above and replace them with
the notice and other provisions required by the GPL. If you do not delete
the provisions above, a recipient may use your version of this file under
the terms of any one of the Apache License version 2 or the GPL.
***** END LICENSE BLOCK *****
* Autocli mode support
* The code uses two variables saved in the clixon handle and accessed via clicon_data_cvec_get,set:
* cli-edit-mode - This is the api-path of the current cli mode in the loaded yang context
* cli-edit-cvv - These are the assigned cligen list of variables with values at the edit-mode
* cli-edit-filter - Label filters for this mode
* cli-edit-mtpoint - If edit modes are used, which mountpoint to use if any
*/
#ifdef HAVE_CONFIG_H
#include "clixon_config.h" /* generated by config & autoconf */
#endif
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <signal.h>
#include <errno.h>
#include <stdarg.h>
#include <time.h>
#include <ctype.h>
#include <unistd.h>
#include <dirent.h>
#include <syslog.h>
#include <arpa/inet.h>
#include <netinet/in.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <sys/wait.h>
#include <sys/param.h>
#include <sys/mount.h>
#include <pwd.h>
#include <assert.h>
/* cligen */
#include <cligen/cligen.h>
/* clixon */
#include <clixon/clixon.h>
#include "clixon_cli_api.h"
#include "cli_autocli.h"
#include "cli_common.h"
/*
* CLIXON CLI parse-tree workpoint API: Essentially a mirror of the cligen_wp_set() and similar functions
*/
static char *
co2apipath(cg_obj *co)
{
cg_callback *cb;
cvec *cvv;
cg_var *cv;
if (co == NULL)
return NULL;
if ((cb = co->co_callbacks) == NULL)
return NULL;
if ((cvv = cb->cc_cvec) == NULL)
return NULL;
if ((cv = cvec_i(cvv, 0)) == NULL)
return NULL;
return cv_string_get(cv);
}
/*! Enter a CLI edit mode
*
* @param[in] h CLICON handle
* @param[in] cvv Vector of variables from CLIgen command-line
* @param[in] argv Vector of user-supplied keywords
* @retval 0 OK
* @retval -1 Error
* Format of argv:
* <api_path_fmt> Generated API PATH (This is where we are in the tree)
* [<api-path-fmt>] Extra api-path from mount-point
* <treename> Name of generated cligen parse-tree, eg "datamodel"
* Note api_path_fmt is not used in code but must be there in order to pick coorig from matching
* code
*/
int
cli_auto_edit(clixon_handle h,
cvec *cvv1,
cvec *argv)
{
int retval = -1;
char *api_path_fmt; /* xml key format */
char *api_path_fmt01 = NULL;
char *api_path = NULL;
char *treename;
pt_head *ph;
cg_obj *co;
cg_obj *coorig;
cvec *cvv2 = NULL; /* cvv2 = cvv0 + cvv1 */
int argc = 0;
char *str;
char *mtpoint = NULL;
yang_stmt *yspec0;
char *mtpoint2 = NULL;
if (cvec_len(argv) != 2 && cvec_len(argv) != 3){
clixon_err(OE_PLUGIN, EINVAL, "Usage: %s(api_path_fmt>*, <treename>)", __FUNCTION__);
goto done;
}
if ((yspec0 = clicon_dbspec_yang(h)) == NULL){
clixon_err(OE_FATAL, 0, "No DB_SPEC");
goto done;
}
api_path_fmt = cv_string_get(cvec_i(argv, argc++));
str = cv_string_get(cvec_i(argv, argc++));
if (str && strncmp(str, "mtpoint:", strlen("mtpoint:")) == 0){
mtpoint = str + strlen("mtpoint:");
clixon_debug(CLIXON_DBG_CLI, "mtpoint:%s", mtpoint);
treename = cv_string_get(cvec_i(argv, argc++));
}
else
treename = str;
/* Find current cligen tree */
if ((ph = cligen_ph_find(cli_cligen(h), treename)) == NULL){
clixon_err(OE_PLUGIN, 0, "No such parsetree header: %s", treename);
goto done;
}
/* Find the matching cligen object
* Note, is complicated: either an instantiated tree (co_treeref_orig)
* or actual tree (co_ref)
*/
if ((co = cligen_co_match(cli_cligen(h))) != NULL){
if ((coorig = co->co_treeref_orig) != NULL ||
(coorig = co->co_ref) != NULL)
cligen_ph_workpoint_set(ph, coorig);
else {
clixon_err(OE_YANG, EINVAL, "No workpoint found");
goto done;
}
}
else{
clixon_err(OE_YANG, EINVAL, "No workpoint found");
goto done;
}
if ((cvv2 = cvec_append(clicon_data_cvec_get(h, "cli-edit-cvv"), cvv1)) == NULL)
goto done;
/* API_path format */
if ((api_path_fmt = co2apipath(coorig)) == NULL){
clixon_err(OE_YANG, EINVAL, "No apipath found");
goto done;
}
if (mtpoint){
/* Get and combine api-path01 */
if (mtpoint_paths(yspec0, mtpoint, api_path_fmt, &api_path_fmt01) < 0)
goto done;
if (api_path_fmt2api_path(api_path_fmt01, cvv2, yspec0, &api_path, NULL) < 0)
goto done;
}
else{
/* get api-path and xpath */
if (api_path_fmt2api_path(api_path_fmt, cvv2, yspec0, &api_path, NULL) < 0)
goto done;
}
/* Store this as edit-mode */
if (clicon_data_set(h, "cli-edit-mode", api_path) < 0)
goto done;
if (mtpoint){
if ((mtpoint2 = strdup(mtpoint)) == NULL){
clixon_err(OE_UNIX, errno, "strdup");
goto done;
}
if (clicon_data_set(h, "cli-edit-mtpoint", mtpoint2) < 0)
goto done;
}
if (clicon_data_cvec_set(h, "cli-edit-cvv", cvv2) < 0)
goto done;
if (co->co_filter){
cvec *cvv3;
if ((cvv3 = cvec_dup(co->co_filter)) == NULL){
clixon_err(OE_YANG, errno, "cvec_dup");
goto done;
}
if (clicon_data_cvec_set(h, "cli-edit-filter", cvv3) < 0)
goto done;
}
retval = 0;
done:
if (api_path_fmt01)
free(api_path_fmt01);
if (mtpoint2)
free(mtpoint2);
if (api_path)
free(api_path);
return retval;
}
/*! CLI callback: Working point tree up to parent
*
* @param[in] h CLICON handle
* @param[in] cvv Vector of variables from CLIgen command-line
* @param[in] argv Vector of user-supplied keywords
* @retval 0 OK
* @retval -1 Error
* Format of argv:
* <treename> Name of generated cligen parse-tree, eg "datamodel"
*/
int
cli_auto_up(clixon_handle h,
cvec *cvv,
cvec *argv)
{
int retval = -1;
cg_var *cv;
char *treename;
cg_obj *co0 = NULL; /* from */
cg_obj *co1 = NULL; /* to (parent, or several parent steps) */
pt_head *ph;
cvec *cvv0 = NULL;
cvec *cvv1 = NULL; /* copy */
char *api_path_fmt0; /* from */
char *api_path_fmt1; /* to */
char *api_path = NULL;
int i;
int j;
size_t len;
cvec *cvv_filter = NULL;
yang_stmt *yspec0;
if (cvec_len(argv) != 1){
clixon_err(OE_PLUGIN, EINVAL, "Usage: %s(<treename>)", __FUNCTION__);
goto done;
}
if ((yspec0 = clicon_dbspec_yang(h)) == NULL){
clixon_err(OE_FATAL, 0, "No DB_SPEC");
goto done;
}
cv = cvec_i(argv, 0);
treename = cv_string_get(cv);
if ((ph = cligen_ph_find(cli_cligen(h), treename)) == NULL){
clixon_err(OE_PLUGIN, 0, "No such parsetree header: %s", treename);
goto done;
}
if ((co0 = cligen_ph_workpoint_get(ph)) == NULL)
goto ok;
cvv_filter = clicon_data_cvec_get(h, "cli-edit-filter");
/* Find parent that has a callback, XXX has edit */
for (co1 = co_up(co0); co1; co1 = co_up(co1)){
cg_obj *cot = NULL;
if (co_terminal(co1, &cot)){
if (cot == NULL)
break; /* found top */
if (cvv_filter){
cv = NULL;
while ((cv = cvec_each(cot->co_cvec, cv)) != NULL){
if (co_isfilter(cvv_filter, cv_name_get(cv)))
break;
}
if (cv == NULL)
break; /* no filter match */
}
}
}
cligen_ph_workpoint_set(ph, co1);
if (co1 == NULL){
clicon_data_set(h, "cli-edit-mode", "");
clicon_data_cvec_del(h, "cli-edit-cvv");
clicon_data_cvec_del(h, "cli-edit-filter");
clicon_data_set(h, "cli-edit-mtpoint", "");
goto ok;
}
/* get before and after api-path-fmt (as generated from yang) */
api_path_fmt0 = co2apipath(co0);
api_path_fmt1 = co2apipath(co1);
assert(strlen(api_path_fmt0) > strlen(api_path_fmt1));
/* Find diff of 0 and 1 (how many variables differ?) and trunc cvv0 by that amount */
cvv0 = clicon_data_cvec_get(h, "cli-edit-cvv");
j=0; /* count diffs */
len = strlen(api_path_fmt0);
for (i=strlen(api_path_fmt1); i<len; i++)
if (api_path_fmt0[i] == '%')
j++;
cvv1 = cvec_new(0);
for (i=0; i<cvec_len(cvv0)-j; i++){
cv = cvec_i(cvv0, i);
cvec_append_var(cvv1, cv);
}
/* get api-path and xpath */
if (api_path_fmt2api_path(api_path_fmt1, cvv1, yspec0, &api_path, NULL) < 0)
goto done;
/* Store this as edit-mode */
clicon_data_set(h, "cli-edit-mode", api_path);
clicon_data_cvec_set(h, "cli-edit-cvv", cvv1);
ok:
retval = 0;
done:
if (api_path)
free(api_path);
return retval;
}
/*! CLI callback: Working point tree reset to top level
*
* @param[in] h CLICON handle
* @param[in] cvv Vector of variables from CLIgen command-line
* @param[in] argv Vector of user-supplied keywords
* @retval 0 OK
* @retval -1 Error
* Format of argv:
* <treename> Name of generated cligen parse-tree, eg "datamodel"
*/
int
cli_auto_top(clixon_handle h,
cvec *cvv,
cvec *argv)
{
int retval = -1;
cg_var *cv;
char *treename;
pt_head *ph;
cv = cvec_i(argv, 0);
treename = cv_string_get(cv);
if ((ph = cligen_ph_find(cli_cligen(h), treename)) == NULL){
clixon_err(OE_PLUGIN, 0, "No such parsetree header: %s", treename);
goto done;
}
cligen_ph_workpoint_set(ph, NULL);
/* Store this as edit-mode */
clicon_data_set(h, "cli-edit-mode", "");
clicon_data_cvec_del(h, "cli-edit-cvv");
clicon_data_cvec_del(h, "cli-edit-filter");
clicon_data_set(h, "cli-edit-mtpoint", "");
retval = 0;
done:
return retval;
}
/*! CLI callback: set auto db item
*
* @param[in] h Clixon handle
* @param[in] cvv Vector of cli string and instantiated variables
* @param[in] argv Vector. First element xml key format string, eg "/aaa/%s"
* @retval 0 OK
* @retval -1 Error
* Format of argv:
* <api-path-fmt> Generated
*/
int
cli_auto_set(clixon_handle h,
cvec *cvv,
cvec *argv)
{
int retval = -1;
cvec *cvv2 = NULL;
cvv2 = cvec_append(clicon_data_cvec_get(h, "cli-edit-cvv"), cvv);
if (cli_dbxml(h, cvv2, argv, OP_REPLACE, NULL) < 0)
goto done;
retval = 0;
done:
if (cvv2)
cvec_free(cvv2);
return retval;
}
/*! Merge datastore xml entry
*
* @param[in] h Clixon handle
* @param[in] cvv Vector of cli string and instantiated variables
* @param[in] argv Vector. First element xml key format string, eg "/aaa/%s"
* @retval 0 OK
* @retval -1 Error
*/
int
cli_auto_merge(clixon_handle h,
cvec *cvv,
cvec *argv)
{
int retval = -1;
cvec *cvv2 = NULL;
cvv2 = cvec_append(clicon_data_cvec_get(h, "cli-edit-cvv"), cvv);
if (cli_dbxml(h, cvv2, argv, OP_MERGE, NULL) < 0)
goto done;
retval = 0;
done:
if (cvv2)
cvec_free(cvv2);
return retval;
}
/*! Create datastore xml entry
*
* @param[in] h Clixon handle
* @param[in] cvv Vector of cli string and instantiated variables
* @param[in] argv Vector. First element xml key format string, eg "/aaa/%s"
* @retval 0 OK
* @retval -1 Error
*/
int
cli_auto_create(clixon_handle h,
cvec *cvv,
cvec *argv)
{
int retval = -1;
cvec *cvv2 = NULL;
cvv2 = cvec_append(clicon_data_cvec_get(h, "cli-edit-cvv"), cvv);
if (cli_dbxml(h, cvv2, argv, OP_CREATE, NULL) < 0)
goto done;
retval = 0;
done:
if (cvv2)
cvec_free(cvv2);
return retval;
}
/*! Delete datastore xml
*
* @param[in] h Clixon handle
* @param[in] cvv Vector of cli string and instantiated variables
* @param[in] argv Vector. First element xml key format string, eg "/aaa/%s"
* @retval 0 OK
* @retval -1 Error
*/
int
cli_auto_del(clixon_handle h,
cvec *cvv,
cvec *argv)
{
int retval = -1;
cvec *cvv2 = NULL;
cvv2 = cvec_append(clicon_data_cvec_get(h, "cli-edit-cvv"), cvv);
if (cli_dbxml(h, cvv2, argv, OP_REMOVE, NULL) < 0)
goto done;
retval = 0;
done:
if (cvv2)
cvec_free(cvv2);
return retval;
}
struct findpt_arg{
char *fa_str; /* search string */
cg_obj *fa_co; /* result */
};
/*! Iterate through parse-tree to find first argument set by cli_generate code
*
* @see cg_applyfn_t
* @param[in] co CLIgen parse-tree object
* @param[in] arg Argument, cast to application-specific info
* @retval 1 OK and return (abort iteration)
* @retval 0 OK and continue
*/
static int
cli_auto_findpt(cg_obj *co,
void *arg)
{
struct findpt_arg *fa = (struct findpt_arg *)arg;
cvec *cvv;
if (co->co_callbacks && (cvv = co->co_callbacks->cc_cvec))
if (strcmp(fa->fa_str, cv_string_get(cvec_i(cvv, 0))) == 0){
fa->fa_co = co;
return 1;
}
return 0;
}
/*! Enter edit mode
*
* @param[in] h Clixon handle
* @param[in] cvv Vector of cli string and instantiated variables
* @param[in] argv Vector of args to function in command.
* @retval 0 OK
* @retval -1 Error
* Format of argv:
* <api_path_fmt> Generated API PATH FORMAT (print-like for variables)
* <vars>* List of static variables that can be used as values for api_path_fmt
* In this example all static variables are added and dynamic variables are appended
* But this can be done differently
* Example:
* api_path_fmt=/a/b=%s,%s/c
* cvv: "cmd 42", 42
* argv: 99
* api_path: /a/b=42,99/c
* @see cli_auto_edit
*/
int
cli_auto_sub_enter(clixon_handle h,
cvec *cvv,
cvec *argv)
{
int retval = -1;
char *api_path_fmt; /* Contains wildcards as %.. */
char *api_path = NULL;
char *treename;
cvec *cvv1 = NULL;
cvec *cvv2 = NULL;
int i;
cg_var *cv = NULL;
pt_head *ph;
struct findpt_arg fa = {0,};
yang_stmt *yspec0;
if (cvec_len(argv) < 2){
clixon_err(OE_PLUGIN, EINVAL, "Usage: %s(<tree> <api_path_fmt> (,vars)*)", __FUNCTION__);
goto done;
}
if ((yspec0 = clicon_dbspec_yang(h)) == NULL){
clixon_err(OE_FATAL, 0, "No DB_SPEC");
goto done;
}
/* First argv argument: treename */
cv = cvec_i(argv, 0);
treename = cv_string_get(cv);
/* Second argv argument: API_path format */
cv = cvec_i(argv, 1);
api_path_fmt = cv_string_get(cv);
/* if api_path_fmt contains print like % statements,
* values must be assigned, either dynaically from cvv (cli command line) or statically
* in code here.
* This is done by constructing a cvv1 here which suits your needs
* In this example all variables from cvv are appended with all given static variables in
* argv, but this can be done differently
*/
/* Create a cvv with variables to add to api-path */
if ((cvv1 = cvec_new(0)) == NULL){
clixon_err(OE_UNIX, errno, "cvec_new");
goto done;
}
/* Append static variables (skip first treename) */
for (i=1; i<cvec_len(argv); i++){
if (cvec_append_var(cvv1, cvec_i(argv, i)) < 0)
goto done;
}
/* Append dynamic variables from the command line (skip first contains whole command line) */
for (i=1; i<cvec_len(cvv); i++){
if (cvec_append_var(cvv1, cvec_i(cvv, i)) < 0)
goto done;
}
if (api_path_fmt2api_path(api_path_fmt, cvv1, yspec0, &api_path, NULL) < 0)
goto done;
/* Assign the variables */
if ((cvv2 = cvec_append(clicon_data_cvec_get(h, "cli-edit-cvv"), cvv1)) == NULL)
goto done;
/* Store this as edit-mode */
if (clicon_data_set(h, "cli-edit-mode", api_path) < 0)
goto done;
if (clicon_data_cvec_set(h, "cli-edit-cvv", cvv2) < 0)
goto done;
/* Find current cligen tree */
if ((ph = cligen_ph_find(cli_cligen(h), treename)) == NULL){
clixon_err(OE_PLUGIN, ENOENT, "No such parsetree header: %s", treename);
goto done;
}
/* Find the point in the generated clispec tree where workpoint should be set */
fa.fa_str = api_path_fmt;
if (pt_apply(cligen_ph_parsetree_get(ph), cli_auto_findpt, INT32_MAX, &fa) < 0)
goto done;
if (fa.fa_co == NULL){
clixon_err(OE_PLUGIN, ENOENT, "No such cligen object found %s", api_path);
goto done;
}
cligen_ph_workpoint_set(ph, fa.fa_co);
retval = 0;
done:
if (api_path)
free(api_path);
if (cvv1)
cvec_free(cvv1);
return retval;
}
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