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Fixed: [Deletion of leaf in YANG choice removes leaf in a different choice/case](https://github.com/clicon/clixon/issues/542)

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This commit is contained in:
Olof hagsand 2024-08-20 10:04:46 +02:00
parent f0eadc6e32
commit 7cbc0a8dc3
3 changed files with 67 additions and 22 deletions
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77
lib/src/clixon_datastore_write.c
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@ -109,6 +109,7 @@ struct xmldb_multi_write_arg {
* @param[in] x XML node (where to look for attribute)
* @param[in] name Attribute name
* @param[in] ns (Expected) Namespace of attribute
* @param[in] peek If 0 dont remove attribute
* @param[out] cbret Error message (if retval=0)
* @param[out] valp Malloced value (if retval=1)
* @retval 1 OK
@ -120,6 +121,7 @@ static int
attr_ns_value(cxobj *x,
char *name,
char *ns,
int peek,
cbuf *cbret,
char **valp)
{
@ -144,7 +146,8 @@ attr_ns_value(cxobj *x,
clixon_err(OE_UNIX, errno, "malloc");
goto done;
}
xml_purge(xa);
if (!peek)
xml_purge(xa);
}
}
*valp = val;
@ -373,14 +376,16 @@ choice_is_other(yang_stmt *y0c,
return 0;
}
/*! Check if choice nodes and implicitly remove all other cases.
/*! Check if choice nodes and if add implicitly remove all other cases, or fail if delete
*
* Special case is if yc parent (yp) is choice/case
* then find x0 child with same yc even though it does not match lexically
* However this will give another y0c != yc
* @param[in] x0 Base tree node
* @param[in] y1c Yang spec of tree child. If null revert to linear search.
* @retval 0 OK
* @param[in] x1c Tree child
* @param[in] y1c Yang spec of x1c
* @retval 1 OK
* @retval 0 Fail with cbret set
* @retval -1 Error
*
* From RFC 7950 Sec 7.9
@ -391,8 +396,11 @@ choice_is_other(yang_stmt *y0c,
* other cases inside the choice.
*/
static int
choice_delete_other(cxobj *x0,
yang_stmt *y1c)
choice_other_match(cxobj *x0,
cxobj *x1c,
yang_stmt *y1c,
enum operation_type op,
cbuf *cbret)
{
int retval = -1;
cxobj *x0c;
@ -402,7 +410,16 @@ choice_delete_other(cxobj *x0,
yang_stmt *y0choice;
yang_stmt *y1case = NULL;
yang_stmt *y1choice = NULL;
char *opstr = NULL;
int ret;
if ((ret = attr_ns_value(x1c, "operation", NETCONF_BASE_NAMESPACE, 1, cbret, &opstr)) < 0)
goto done;
if (ret == 0)
goto fail;
if (opstr != NULL)
if (xml_operation(opstr, &op) < 0)
goto done;
if (yang_choice_case_get(y1c, &y1case, &y1choice) == 0)
goto ok;
x0prev = NULL;
@ -419,19 +436,37 @@ choice_delete_other(cxobj *x0,
}
/* Check if x0/y0 is part of other choice/case than y1 recursively , if so purge */
if (choice_is_other(y0c, y0case, y0choice, y1c, y1case, y1choice) == 1){
if (xml_purge(x0c) < 0)
goto done;
x0c = x0prev;
switch (op){
case OP_MERGE:
case OP_REPLACE:
case OP_CREATE:
if (xml_purge(x0c) < 0)
goto done;
x0c = x0prev;
continue;
break;
case OP_DELETE:
if (netconf_data_missing(cbret, "Data does not exist; cannot delete resource") < 0)
goto done;
goto fail;
break;
case OP_REMOVE:
case OP_NONE:
break;
}
}
x0prev = x0c;
}
ok:
retval = 0;
retval = 1;
done:
return retval;
fail:
retval = 0;
goto done;
}
/*! Modify a base tree x0 with x1 with yang spec y according to operation op
*
* @param[in] h Clixon handle
@ -506,7 +541,7 @@ text_modify(clixon_handle h,
if (ret == 0)
goto fail;
/* Check for operations embedded in tree according to netconf */
if ((ret = attr_ns_value(x1, "operation", NETCONF_BASE_NAMESPACE,
if ((ret = attr_ns_value(x1, "operation", NETCONF_BASE_NAMESPACE, 0,
cbret, &opstr)) < 0)
goto done;
if (ret == 0)
@ -514,7 +549,7 @@ text_modify(clixon_handle h,
if (opstr != NULL)
if (xml_operation(opstr, &op) < 0)
goto done;
if ((ret = attr_ns_value(x1, "objectcreate", NULL, cbret, &createstr)) < 0)
if ((ret = attr_ns_value(x1, "objectcreate", NULL, 0, cbret, &createstr)) < 0)
goto done;
if (ret == 0)
goto fail;
@ -554,7 +589,7 @@ text_modify(clixon_handle h,
if (yang_keyword_get(y0) == Y_LEAF_LIST &&
yang_find(y0, Y_ORDERED_BY, "user") != NULL){
if ((ret = attr_ns_value(x1,
"insert", YANG_XML_NAMESPACE,
"insert", YANG_XML_NAMESPACE, 0,
cbret, &instr)) < 0)
goto done;
if (ret == 0)
@ -563,7 +598,7 @@ text_modify(clixon_handle h,
xml_attr_insert2val(instr, &insert) < 0)
goto done;
if ((ret = attr_ns_value(x1,
"value", YANG_XML_NAMESPACE,
"value", YANG_XML_NAMESPACE, 0,
cbret, &valstr)) < 0)
goto done;
/* if insert/before, value attribute must be there */
@ -752,7 +787,7 @@ text_modify(clixon_handle h,
if (yang_keyword_get(y0) == Y_LIST &&
yang_find(y0, Y_ORDERED_BY, "user") != NULL){
if ((ret = attr_ns_value(x1,
"insert", YANG_XML_NAMESPACE,
"insert", YANG_XML_NAMESPACE, 0,
cbret, &instr)) < 0)
goto done;
if (ret == 0)
@ -761,7 +796,7 @@ text_modify(clixon_handle h,
xml_attr_insert2val(instr, &insert) < 0)
goto done;
if ((ret = attr_ns_value(x1,
"key", YANG_XML_NAMESPACE,
"key", YANG_XML_NAMESPACE, 0,
cbret, &keystr)) < 0)
goto done;
@ -903,9 +938,11 @@ text_modify(clixon_handle h,
x1cname, yang_find_mynamespace(y0));
goto done;
}
/* Check if existing choice/case should be deleted */
if (choice_delete_other(x0, yc) < 0)
/* Check if existing choice/case, if so may be error or delete */
if ((ret = choice_other_match(x0, x1c, yc, op, cbret)) < 0)
goto done;
if (ret == 0)
goto fail;
/* See if there is a corresponding node in the base tree */
x0c = NULL;
if (match_base_child(x0, x1c, yc, &x0c) < 0)
@ -1052,7 +1089,7 @@ text_modify_top(clixon_handle h,
/* Check for operations embedded in tree according to netconf */
if ((ret = attr_ns_value(x1t,
"operation", NETCONF_BASE_NAMESPACE,
"operation", NETCONF_BASE_NAMESPACE, 0,
cbret, &opstr)) < 0)
goto done;
if (ret == 0)
@ -1060,7 +1097,7 @@ text_modify_top(clixon_handle h,
if (opstr != NULL)
if (xml_operation(opstr, &op) < 0)
goto done;
if ((ret = attr_ns_value(x1t, "objectcreate", NULL, cbret, &createstr)) < 0)
if ((ret = attr_ns_value(x1t, "objectcreate", NULL, 0, cbret, &createstr)) < 0)
goto done;
if (ret == 0)
goto fail;