Fixed: [default state data returned with get-config](https://github.com/clicon/clixon/issues/140)

* Generalized default code for both config and state
This commit is contained in:
Olof hagsand 2020-09-27 17:14:28 +02:00
parent da54dae396
commit 9984cfa1c8
15 changed files with 344 additions and 39 deletions

View file

@ -46,8 +46,14 @@ Users may have to change how they access the system
### Minor changes
*
* Added sanity check that a yang module name matches the filename
### Corrected Bugs
* Fixed: [default state data returned with get-config](https://github.com/clicon/clixon/issues/140)
* Generalized default code for both config and state
## 4.7.0
14 September 2020

View file

@ -324,6 +324,13 @@ client_statedata(clicon_handle h,
clicon_err(OE_UNIX, errno, "cbuf_new");
goto done;
}
/* Add default state to config if present */
if (xml_default_recurse(*xret, 1) < 0)
goto done;
/* Add default global state */
if (xml_global_defaults(h, *xret, nsc, xpath, yspec, 1) < 0)
goto done;
if (clicon_option_bool(h, "CLICON_STREAM_DISCOVERY_RFC5277")){
if ((ymod = yang_find_module_by_name(yspec, "clixon-rfc5277")) == NULL){
clicon_err(OE_YANG, ENOENT, "yang module clixon-rfc5277 not found");
@ -367,6 +374,7 @@ client_statedata(clicon_handle h,
if (ret == 0)
goto fail;
}
/* Use plugin state callbacks */
if ((ret = clixon_plugin_statedata_all(h, yspec, nsc, xpath, xret)) < 0)
goto done;
if (ret == 0)

View file

@ -254,10 +254,10 @@ startup_common(clicon_handle h,
if (xml_sort_recurse(xt) < 0)
goto done;
/* Add global defaults. */
if (xml_global_defaults(h, xt, NULL, NULL, yspec) < 0)
if (xml_global_defaults(h, xt, NULL, NULL, yspec, 0) < 0)
goto done;
/* Apply default values (removed in clear function) */
if (xml_default_recurse(xt) < 0)
if (xml_default_recurse(xt, 0) < 0)
goto done;
/* Handcraft transition with with only add tree */

View file

@ -279,7 +279,7 @@ clixon_plugin_statedata_all(clicon_handle h,
goto done;
if (ret == 0){
if (clixon_netconf_internal_error(xerr,
". Internal error, state callback returned invalid XML: ",
". Internal error, state callback returned invalid XML from plugin: ",
cp->cp_name) < 0)
goto done;
xml_free(*xret);
@ -289,7 +289,16 @@ clixon_plugin_statedata_all(clicon_handle h,
}
if (xml_sort_recurse(x) < 0)
goto done;
if (xml_default_recurse(x) < 0)
/* Mark non-presence containers as XML_FLAG_DEFAULT */
if (xml_apply(x, CX_ELMNT, xml_nopresence_default_mark, (void*)XML_FLAG_DEFAULT) < 0)
goto done;
/* Clear XML tree of defaults */
if (xml_tree_prune_flagged(x, XML_FLAG_DEFAULT, 1) < 0)
goto done;
/* clear mark and change */
xml_apply0(x, CX_ELMNT, (xml_applyfn_t*)xml_flag_reset,
(void*)(0xffff));
if (xml_default_recurse(x, 1) < 0)
goto done;
if ((ret = netconf_trymerge(x, yspec, xret)) < 0)
goto done;

View file

@ -64,9 +64,8 @@ int xml_diff(yang_stmt *yspec, cxobj *x0, cxobj *x1,
int xml_tree_prune_flagged_sub(cxobj *xt, int flag, int test, int *upmark);
int xml_tree_prune_flagged(cxobj *xt, int flag, int test);
int xml_namespace_change(cxobj *x, char *ns, char *prefix);
int xml_default(cxobj *x);
int xml_default_recurse(cxobj *xn);
int xml_global_defaults(clicon_handle h, cxobj *xn, cvec *nsc, const char *xpath, yang_stmt *yspec);
int xml_default_recurse(cxobj *xn, int state);
int xml_global_defaults(clicon_handle h, cxobj *xn, cvec *nsc, const char *xpath, yang_stmt *yspec, int state);
int xml_nopresence_default(cxobj *xt);
int xml_nopresence_default_mark(cxobj *x, void *arg);
int xml_sanity(cxobj *x, void *arg);

View file

@ -568,10 +568,10 @@ xmldb_get_nocache(clicon_handle h,
if (yb != YB_NONE){
/* Add global defaults. */
if (xml_global_defaults(h, xt, nsc, xpath, yspec) < 0)
if (xml_global_defaults(h, xt, nsc, xpath, yspec, 0) < 0)
goto done;
/* Add default values (if not set) */
if (xml_default_recurse(xt) < 0)
if (xml_default_recurse(xt, 0) < 0)
goto done;
}
/* If empty NACM config, then disable NACM if loaded
@ -715,10 +715,10 @@ xmldb_get_cache(clicon_handle h,
goto done;
if (yb != YB_NONE){
/* Add default global values */
if (xml_global_defaults(h, x1t, nsc, xpath, yspec) < 0)
if (xml_global_defaults(h, x1t, nsc, xpath, yspec, 0) < 0)
goto done;
/* Add default recursive values */
if (xml_default_recurse(x1t) < 0)
if (xml_default_recurse(x1t, 0) < 0)
goto done;
}
/* If empty NACM config, then disable NACM if loaded
@ -812,10 +812,10 @@ xmldb_get_zerocopy(clicon_handle h,
}
if (yb != YB_NONE){
/* Add global defaults. */
if (xml_global_defaults(h, x0t, nsc, xpath, yspec) < 0)
if (xml_global_defaults(h, x0t, nsc, xpath, yspec, 0) < 0)
goto done;
/* Apply default values (removed in clear function) */
if (xml_default_recurse(x0t) < 0)
if (xml_default_recurse(x0t, 0) < 0)
goto done;
}
/* If empty NACM config, then disable NACM if loaded

View file

@ -260,7 +260,7 @@ parse_configfile(clicon_handle h,
goto done;
}
if (xml_default_recurse(xc) < 0)
if (xml_default_recurse(xc, 0) < 0)
goto done;
if ((ret = xml_yang_validate_add(h, xc, &xerr)) < 0)
goto done;

View file

@ -347,7 +347,7 @@ xml_yang_validate_rpc(clicon_handle h,
goto done; /* error or validation fail */
if ((retval = xml_yang_validate_add(h, xn, xret)) < 1)
goto done; /* error or validation fail */
if (xml_default_recurse(xn) < 0)
if (xml_default_recurse(xn, 0) < 0)
goto done;
}
// ok: /* pass validation */

View file

@ -1118,12 +1118,14 @@ xml_nopresence_try(yang_stmt *yt,
* XML containers may be created to host default values. That code may be a little too recursive.
* @param[in] yt Yang spec
* @param[in] xt XML tree (with yt as spec of xt, informally)
* @param[in] state Set if global state, otherwise config
* @retval 0 OK
* @retval -1 Error
*/
static int
xml_default1(yang_stmt *yt,
cxobj *xt)
cxobj *xt,
int state)
{
int retval = -1;
yang_stmt *yc;
@ -1145,6 +1147,8 @@ xml_default1(yang_stmt *yt,
case Y_OUTPUT:
yc = NULL;
while ((yc = yn_each(yt, yc)) != NULL) {
if (!state && !yang_config(yc))
continue;
switch (yang_keyword_get(yc)){
case Y_LEAF:
if (!cv_flag(yang_cv_get(yc), V_UNSET)){ /* Default value exists */
@ -1173,7 +1177,7 @@ xml_default1(yang_stmt *yt,
goto done;
xml_sort(xt);
/* Then call it recursively */
if (xml_default1(yc, xc) < 0)
if (xml_default1(yc, xc, state) < 0)
goto done;
}
}
@ -1196,11 +1200,13 @@ xml_default1(yang_stmt *yt,
*
* Assume yang is bound to the tree
* @param[in] xt XML tree
* @param[in] state If set expand defaults also for state data, otherwise only config
* @retval 0 OK
* @retval -1 Error
*/
int
xml_default(cxobj *xt)
static int
xml_default(cxobj *xt,
int state)
{
int retval = -1;
yang_stmt *ys;
@ -1209,7 +1215,7 @@ xml_default(cxobj *xt)
retval = 0;
goto done;
}
if (xml_default1(ys, xt) < 0)
if (xml_default1(ys, xt, state) < 0)
goto done;
retval = 0;
done:
@ -1218,20 +1224,27 @@ xml_default(cxobj *xt)
/*! Recursively fill in default values in an XML tree
* @param[in] xt XML tree
* @param[in] state If set expand defaults also for state data, otherwise only config
* @retval 0 OK
* @retval -1 Error
*/
int
xml_default_recurse(cxobj *xn)
xml_default_recurse(cxobj *xn,
int state)
{
int retval = -1;
cxobj *x;
int retval = -1;
cxobj *x;
yang_stmt *y;
if (xml_default(xn) < 0)
if (xml_default(xn, state) < 0)
goto done;
x = NULL;
while ((x = xml_child_each(xn, x, CX_ELMNT)) != NULL) {
if (xml_default_recurse(x) < 0)
if ((y = (yang_stmt*)xml_spec(x)) != NULL){
if (!state && !yang_config(y))
continue;
}
if (xml_default_recurse(x, state) < 0)
goto done;
}
retval = 0;
@ -1242,15 +1255,16 @@ xml_default_recurse(cxobj *xn)
/*! Expand and set default values of global top-level on XML tree
*
* Not recursive, except in one case with one or several non-presence containers
* @param[in] h Clixon handle
* @param[in] yspec Top-level YANG specification tree, all modules
* @param[in] xt XML tree
* @param[in] yspec Top-level YANG specification tree, all modules
* @param[in] state Set if global state, otherwise config
* @retval 0 OK
* @retval -1 Error
*/
static int
xml_global_defaults_create(cxobj *xt,
yang_stmt *yspec)
yang_stmt *yspec,
int state)
{
int retval = -1;
@ -1261,7 +1275,7 @@ xml_global_defaults_create(cxobj *xt,
goto done;
}
while ((ymod = yn_each(yspec, ymod)) != NULL)
if (xml_default1(ymod, xt) < 0)
if (xml_default1(ymod, xt, state) < 0)
goto done;
retval = 0;
done:
@ -1275,6 +1289,7 @@ xml_global_defaults_create(cxobj *xt,
* @param[in] xt XML tree, assume already filtered with xpath
* @param[in] xpath Filter global defaults with this and merge with xt
* @param[in] yspec Top-level YANG specification tree, all modules
* @param[in] state Set if global state, otherwise config
* @retval 0 OK
* @retval -1 Error
* Uses cache?
@ -1284,7 +1299,8 @@ xml_global_defaults(clicon_handle h,
cxobj *xt,
cvec *nsc,
const char *xpath,
yang_stmt *yspec)
yang_stmt *yspec,
int state)
{
int retval = -1;
db_elmnt de0 = {0,};
@ -1296,16 +1312,19 @@ xml_global_defaults(clicon_handle h,
int i;
cxobj *x0;
int ret;
char *key;
/* Use different keys for config and state */
key = state ? "global-defaults-state" : "global-defaults-config";
/* First get or compute global xml tree cache */
if ((de = clicon_db_elmnt_get(h, "global-defaults")) == NULL){
/* Create it it */
if ((de = clicon_db_elmnt_get(h, key)) == NULL){
/* Create it */
if ((xcache = xml_new("config", NULL, CX_ELMNT)) == NULL)
goto done;
if (xml_global_defaults_create(xcache, yspec) < 0)
if (xml_global_defaults_create(xcache, yspec, state) < 0)
goto done;
de0.de_xml = xcache;
clicon_db_elmnt_set(h, "global-defaults", &de0);
clicon_db_elmnt_set(h, key, &de0);
}
else
xcache = de->de_xml;
@ -1323,6 +1342,7 @@ xml_global_defaults(clicon_handle h,
xml_flag_set(x0, XML_FLAG_MARK);
xml_apply_ancestor(x0, (xml_applyfn_t*)xml_flag_set, (void*)XML_FLAG_CHANGE);
}
/* Create a new tree and copy over the parts from the cache that matches xpath */
if ((xpart = xml_new("config", NULL, CX_ELMNT)) == NULL)
goto done;
if (xml_copy_marked(xcache, xpart) < 0) /* config */

263
test/test_augment_state.sh Executable file
View file

@ -0,0 +1,263 @@
#!/usr/bin/env bash
# Test augmented state
# Use main example -- -sS option to add state via a file
#
# Magic line must be first in script (see README.md)
s="$_" ; . ./lib.sh || if [ "$s" = $0 ]; then exit 0; else return 0; fi
APPNAME=example
cfg=$dir/conf_yang.xml
fyang=$dir/example-augment.yang
fyang2=$dir/example-lib.yang
fstate=$dir/state.xml
cat <<EOF > $cfg
<clixon-config xmlns="http://clicon.org/config">
<CLICON_CONFIGFILE>$cfg</CLICON_CONFIGFILE>
<CLICON_FEATURE>a:test</CLICON_FEATURE>
<CLICON_YANG_DIR>$dir</CLICON_YANG_DIR>
<CLICON_YANG_DIR>/usr/local/share/clixon</CLICON_YANG_DIR>
<CLICON_YANG_MAIN_FILE>$fyang</CLICON_YANG_MAIN_FILE>
<CLICON_CLISPEC_DIR>/usr/local/lib/$APPNAME/clispec</CLICON_CLISPEC_DIR>
<CLICON_CLI_DIR>/usr/local/lib/$APPNAME/cli</CLICON_CLI_DIR>
<CLICON_CLI_MODE>$APPNAME</CLICON_CLI_MODE>
<CLICON_SOCK>/usr/local/var/$APPNAME/$APPNAME.sock</CLICON_SOCK>
<CLICON_BACKEND_PIDFILE>/usr/local/var/$APPNAME/$APPNAME.pidfile</CLICON_BACKEND_PIDFILE>
<CLICON_BACKEND_DIR>/usr/local/lib/$APPNAME/backend</CLICON_BACKEND_DIR>
<CLICON_RESTCONF_PRETTY>false</CLICON_RESTCONF_PRETTY>
<CLICON_XMLDB_DIR>/usr/local/var/$APPNAME</CLICON_XMLDB_DIR>
<CLICON_MODULE_LIBRARY_RFC7895>false</CLICON_MODULE_LIBRARY_RFC7895>
</clixon-config>
EOF
# This is the lib function with the base container
cat <<EOF > $fyang2
module example-lib {
yang-version 1.1;
namespace "urn:example:lib";
revision "2019-03-04";
prefix lib;
container global-state {
config false;
leaf gbds{
description "Global base default state";
type string;
default "gbds";
}
leaf gbos{
description "Global base optional state";
type string;
}
container nopres{
description "This should be removed";
}
}
container base-config {
list parameter{
key name;
leaf name{
type string;
}
container param-state {
config false;
leaf lbds{
description "Local base default state";
type string;
default "lbds";
}
leaf lbos{
description "Local base optional state";
type string;
}
}
}
}
}
EOF
# This is the main module where the augment exists
cat <<EOF > $fyang
module example-augment {
yang-version 1.1;
namespace "urn:example:augment";
prefix aug;
revision "2020-09-25";
import example-lib {
prefix lib;
}
/* Augments global state */
augment "/lib:global-state" {
leaf gads{
description "Global augmented default state";
type string;
default "gads";
}
leaf gaos{
description "Global augmented optional state";
type string;
}
}
/* Augments state in config in-line */
augment "/lib:base-config/lib:parameter/lib:param-state" {
leaf lads{
description "Local augmented default state";
type string;
default "lads";
}
leaf laos{
description "Local augmented optional state";
type string;
}
}
}
EOF
# Get config and state
# Arguments
# - expected config
# - expected state
testrun()
{
config=$1
state=$2
new "get config"
if [ -z "$config" ]; then
expecteof "$clixon_netconf -qf $cfg" 0 "<rpc $DEFAULTNS><get-config><source><running/></source></get-config></rpc>]]>]]>" "^<rpc-reply $DEFAULTNS><data/></rpc-reply>]]>]]>$"
else
expecteof "$clixon_netconf -qf $cfg" 0 "<rpc $DEFAULTNS><get-config><source><running/></source></get-config></rpc>]]>]]>" "^<rpc-reply $DEFAULTNS><data>$config</data></rpc-reply>]]>]]>$"
fi
new "get state"
expecteof "$clixon_netconf -qf $cfg" 0 "<rpc $DEFAULTNS><get/></rpc>]]>]]>" "^<rpc-reply $DEFAULTNS><data>$state</data></rpc-reply>]]>]]>$"
}
new "test params: -f $cfg"
if [ $BE -ne 0 ]; then
new "kill old backend"
sudo clixon_backend -zf $cfg
if [ $? -ne 0 ]; then
err
fi
new "start backend -s init -f $cfg -- -sS $fstate"
start_backend -s init -f $cfg -- -sS $fstate
fi
new "waiting"
wait_backend
#-----------------------------
new "1. Empty config/state, expect global default state"
CONFIG=""
cat <<EOF > $fstate
EOF
EXPSTATE=$(cat <<EOF
<global-state xmlns="urn:example:lib"><gbds>gbds</gbds><aug:gads xmlns:aug="urn:example:augment">gads</aug:gads></global-state>
EOF
)
testrun "$CONFIG" "$EXPSTATE"
#-----------------------------
new "2. Empty config/top-level state, expect global default state"
cat <<EOF > $fstate
<global-state xmlns="urn:example:lib"/>
EOF
testrun "$CONFIG" "$EXPSTATE"
#-----------------------------
new "3. Empty config/top-level w non-presence state, expect global default state"
cat <<EOF > $fstate
<global-state xmlns="urn:example:lib">
<nopres/>
</global-state>
EOF
testrun "$CONFIG" "$EXPSTATE"
#-----------------------------
new "4. Empty config + optional state, expect global default + optional state"
cat <<EOF > $fstate
<global-state xmlns="urn:example:lib">
<gbos>gbos</gbos>
<aug:gaos xmlns:aug="urn:example:augment">gaos</aug:gaos>
</global-state>
EOF
EXPSTATE=$(cat <<EOF
<global-state xmlns="urn:example:lib"><gbds>gbds</gbds><gbos>gbos</gbos><aug:gads xmlns:aug="urn:example:augment">gads</aug:gads><aug:gaos xmlns:aug="urn:example:augment">gaos</aug:gaos></global-state>
EOF
)
testrun "$CONFIG" "$EXPSTATE"
#-----------------------------
# From here, add a config tree
new "5. Config tree, empty top state, expect default top state and default local state"
CONFIG=$(cat <<EOF
<base-config xmlns="urn:example:lib"><parameter><name>a</name></parameter></base-config>
EOF
)
cat <<EOF > $fstate
EOF
EXPSTATE=$(cat <<EOF
<global-state xmlns="urn:example:lib"><gbds>gbds</gbds><aug:gads xmlns:aug="urn:example:augment">gads</aug:gads></global-state><base-config xmlns="urn:example:lib"><parameter><name>a</name><param-state><lbds>lbds</lbds><aug:lads xmlns:aug="urn:example:augment">lads</aug:lads></param-state></parameter></base-config>
EOF
)
new "Add config"
expecteof "$clixon_netconf -qf $cfg" 0 "<rpc $DEFAULTNS><edit-config><target><candidate/></target><config>$CONFIG</config></edit-config></rpc>]]>]]>" "^<rpc-reply $DEFAULTNS><ok/></rpc-reply>]]>]]>"
new "netconf commit"
expecteof "$clixon_netconf -qf $cfg" 0 "<rpc $DEFAULTNS><commit/></rpc>]]>]]>" "^<rpc-reply $DEFAULTNS><ok/></rpc-reply>]]>]]>$"
testrun "$CONFIG" "$EXPSTATE"
#-----------------------------
new "6. Config tree and optional tree state, empty top state, expect default top state and default local state"
cat <<EOF > $fstate
<base-config xmlns="urn:example:lib">
<parameter>
<name>a</name>
<param-state>
<lbos>lbos</lbos>
<laos xmlns="urn:example:augment">laos</laos>
</param-state>
</parameter>
</base-config>
EOF
EXPSTATE=$(cat <<EOF
<global-state xmlns="urn:example:lib"><gbds>gbds</gbds><aug:gads xmlns:aug="urn:example:augment">gads</aug:gads></global-state><base-config xmlns="urn:example:lib"><parameter><name>a</name><param-state><lbds>lbds</lbds><lbos>lbos</lbos><aug:lads xmlns:aug="urn:example:augment">lads</aug:lads><laos xmlns="urn:example:augment">laos</laos></param-state></parameter></base-config>
EOF
)
testrun "$CONFIG" "$EXPSTATE"
#-----------------------------
if [ $BE -eq 0 ]; then
exit # BE
fi
new "Kill backend"
# Check if premature kill
pid=$(pgrep -u root -f clixon_backend)
if [ -z "$pid" ]; then
err "backend already dead"
fi
# kill backend
stop_backend -f $cfg
rm -rf $dir

View file

@ -227,7 +227,7 @@ expectpart "$(curl $CURLOPTS -X GET $RCPROTO://localhost/restconf/data/augment:r
#----------------------------------------------
# Also generate an invalid state XML. This should generate an "Internal" error and the name of the
new "restconf GET failed state"
expectpart "$(curl $CURLOPTS -X GET -H 'Accept: application/yang-data+xml' $RCPROTO://localhost/restconf/data?content=nonconfig)" 0 '412 Precondition Failed' '<errors xmlns="urn:ietf:params:xml:ns:yang:ietf-restconf"><error><error-type>application</error-type><error-tag>operation-failed</error-tag><error-info><bad-element>mystate</bad-element></error-info><error-severity>error</error-severity><error-message>Failed to find YANG spec of XML node: mystate with parent: top in namespace: urn:example:foobar. Internal error, state callback returned invalid XML: example_backend</error-message></error></errors>'
expectpart "$(curl $CURLOPTS -X GET -H 'Accept: application/yang-data+xml' $RCPROTO://localhost/restconf/data?content=nonconfig)" 0 '412 Precondition Failed' '<errors xmlns="urn:ietf:params:xml:ns:yang:ietf-restconf"><error><error-type>application</error-type><error-tag>operation-failed</error-tag><error-info><bad-element>mystate</bad-element></error-info><error-severity>error</error-severity><error-message>Failed to find YANG spec of XML node: mystate with parent: config in namespace: urn:example:foobar. Internal error, state callback returned invalid XML from plugin: example_backend</error-message></error></errors>'
# Add error XML a[4242] , it should fail on autocommit but may not be discarded, therefore still
# there in candidate when want to add something else

View file

@ -227,7 +227,7 @@ EOF
echo "$STATE0" > $fstate
new "Get state (negative test)"
expecteof "$clixon_netconf -qf $cfg" 0 "<rpc $DEFAULTNS><get content=\"nonconfig\"></get></rpc>]]>]]>" "error-message>Failed to find YANG spec of XML node: u5 with parent: sb in namespace: urn:example:unknown. Internal error, state callback returned invalid XML: example_backend</error-message>"
expecteof "$clixon_netconf -qf $cfg" 0 "<rpc $DEFAULTNS><get content=\"nonconfig\"></get></rpc>]]>]]>" "error-message>Failed to find YANG spec of XML node: u5 with parent: sb in namespace: urn:example:unknown. Internal error, state callback returned invalid XML from plugin: example_backend</error-message>"
new "restconf get state(negative)"
expectpart "$(curl $CURLOPTS -X GET -H "Accept: application/yang-data+xml" $RCPROTO://localhost/restconf/data?content=nonconfig)" 0 "HTTP/1.1 412 Precondition Failed" "<error-tag>operation-failed</error-tag><error-info><bad-element>u5</bad-element></error-info>"

View file

@ -241,7 +241,7 @@ main(int argc,
if (xml_apply0(x, -1, xml_sort_verify, h) < 0)
clicon_log(LOG_NOTICE, "%s: sort verify failed", __FUNCTION__);
/* Add default values */
if (xml_default_recurse(x) < 0)
if (xml_default_recurse(x, 0) < 0)
goto done;
if ((ret = xml_yang_validate_all_top(h, x, &xerr)) < 0)
goto done;

View file

@ -80,7 +80,7 @@ validate_tree(clicon_handle h,
/* should already be populated */
/* Add default values */
if (xml_default_recurse(xt) < 0)
if (xml_default_recurse(xt, 0) < 0)
goto done;
if (xml_apply(xt, -1, xml_sort_verify, h) < 0)
clicon_log(LOG_NOTICE, "%s: sort verify failed", __FUNCTION__);

View file

@ -323,7 +323,7 @@ main(int argc,
goto done;
/* Add default values */
if (xml_default_recurse(x0) < 0)
if (xml_default_recurse(x0, 0) < 0)
goto done;
if (xml_apply0(x0, -1, xml_sort_verify, h) < 0)
clicon_log(LOG_NOTICE, "%s: sort verify failed", __FUNCTION__);