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* State callbacks provided by user are validated. If they are invalid an internal error is returned.

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* Fixed multi-namespace for augmented state which was not covered in 4.2.0.
* The multi-namespace augment state may rearrange the XML namespace attributes.
* Mandatory variables can no longer be deleted.
This commit is contained in:
Olof hagsand 2019-11-11 21:03:11 +01:00
parent 728fe9c6ac
commit 835f9030d2
20 changed files with 299 additions and 229 deletions
Download patch file Download diff file Expand all files Collapse all files

205
lib/src/clixon_xml_map.c
View file

@ -2153,6 +2153,46 @@ xml_tree_prune_flagged(cxobj *xt,
return retval;
}
/*! Add prefix:namespace pair to xml node, set cache, prefix, etc
*/
static int
add_namespace(cxobj *x1, /* target */
cxobj *x1p,
char *prefix1,
char *namespace)
{
int retval = -1;
cxobj *xa = NULL;
/* Add binding to x1p. We add to parent due to heurestics, so we dont
* end up in adding it to large number of siblings
*/
if (nscache_set(x1, prefix1, namespace) < 0)
goto done;
/* Create xmlns attribute to x1p/x1 XXX same code v */
if (prefix1){
if ((xa = xml_new(prefix1, x1, NULL)) == NULL)
goto done;
if (xml_prefix_set(xa, "xmlns") < 0)
goto done;
}
else{
if ((xa = xml_new("xmlns", x1, NULL)) == NULL)
goto done;
}
xml_type_set(xa, CX_ATTR);
if (xml_value_set(xa, namespace) < 0)
goto done;
xml_sort(x1, NULL); /* Ensure attr is first / XXX xml_insert? */
/* 5. Add prefix to x1, if any */
if (prefix1 && xml_prefix_set(x1, prefix1) < 0)
goto done;
retval = 0;
done:
return retval;
}
/*! Add default values (if not set)
* @param[in] xt XML tree with some node marked
* @param[in] arg Ignored
@ -2175,6 +2215,7 @@ xml_default(cxobj *xt,
int added=0;
char *namespace;
char *prefix;
int ret;
if ((ys = (yang_stmt*)xml_spec(xt)) == NULL){
retval = 0;
@ -2195,9 +2236,22 @@ xml_default(cxobj *xt,
/* assign right prefix */
if ((namespace = yang_find_mynamespace(y)) != NULL){
prefix = NULL;
if (xml2prefix(xt, namespace, &prefix))
if ((ret = xml2prefix(xt, namespace, &prefix)) < 0)
goto done;
if (ret){
if (xml_prefix_set(xc, prefix) < 0)
goto done;
}
else{ /* namespace does not exist in target, use source prefix */
char *prefix1 = NULL;
if ((prefix1 = strdup(yang_find_myprefix(y))) == NULL){
clicon_err(OE_UNIX, errno, "strdup");
goto done;
}
if (add_namespace(xc, xt, prefix1, namespace) < 0)
goto done;
}
}
xml_flag_set(xc, XML_FLAG_DEFAULT);
@ -3190,6 +3244,124 @@ xmlns_assign(cxobj *x)
return retval;
}
/*! Given a src node x0 and a target node x1, assign (optional) prefix and namespace
* @param[in] x0 Source XML tree
* @param[in] x1 Target XML tree
* 1. Find N=namespace(x0)
* 2. Detect if N is declared in x1 parent
* 3. If yes, assign prefix to x1
* 4. If no, create new prefix/namespace binding and assign that to x1p (x1 if x1p is root)
* 5. Add prefix to x1, if any
* 6. Ensure x1 cache is updated
* @note switch use of x0 and x1 compared to datastore text_modify
* @see xml2ns
* XXX: fail handling: if (netconf_data_missing(cbret, NULL, "Data does not exist; cannot delete resource") < 0)
goto done;
*/
int
check_namespaces(cxobj *x0, /* source */
cxobj *x1, /* target */
cxobj *x1p)
{
int retval = -1;
char *namespace = NULL;
char *prefix0 = NULL;;
char *prefix1 = NULL;
char *prefixb = NULL; /* identityref body prefix */
cvec *nsc0 = NULL;
cvec *nsc = NULL;
int isroot;
char *pexist = NULL;
yang_stmt *y;
/* XXX: need to identify root better than hiereustics and strcmp,... */
isroot = xml_parent(x1p)==NULL &&
(strcmp(xml_name(x1p), "config") == 0 || strcmp(xml_name(x1p), "top") == 0)&&
xml_prefix(x1p)==NULL;
/* 1. Find N=namespace(x0) */
prefix0 = xml_prefix(x0);
if (xml2ns(x0, prefix0, &namespace) < 0)
goto done;
if (namespace == NULL){
clicon_err(OE_XML, ENOENT, "No namespace found for prefix:%s",
prefix0?prefix0:"NULL");
goto done;
}
/* 2a. Detect if namespace is declared in x1 target parent */
if (xml2prefix(x1p, namespace, &pexist) == 1){
/* Yes, and it has prefix pexist */
if (pexist){
if ((prefix1 = strdup(pexist)) == NULL){
clicon_err(OE_UNIX, errno, "strdup");
goto done;
}
}
else
prefix1 = NULL;
/* 3. If yes, assign prefix to x1 */
if (prefix1 && xml_prefix_set(x1, prefix1) < 0)
goto done;
/* And copy namespace context from parent to child */
if ((nsc0 = nscache_get_all(x1p)) != NULL){
if ((nsc = cvec_dup(nsc0)) == NULL){
clicon_err(OE_UNIX, errno, "cvec_dup");
goto done;
}
nscache_replace(x1, nsc);
}
/* Just in case */
if (nscache_set(x1, prefix1, namespace) < 0)
goto done;
}
else{ /* No, namespace does not exist in x1 _parent_
* Check if it is exists in x1 itself */
if (nscache_get_prefix(x1, namespace, &pexist) == 1){
/* Yes it exists, but is it equal? */
if ((pexist == NULL && prefix0 == NULL) ||
(pexist && prefix0 &&
strcmp(pexist, prefix0)==0)){ /* Equal, reuse */
;
}
else{ /* namespace exist, but not equal, use existing */
/* Add prefix to x1, if any */
if (pexist && xml_prefix_set(x1, pexist) < 0)
goto done;
}
goto ok; /* skip */
}
else
{ /* namespace does not exist in target x1, use source prefix
* use the prefix defined in the module
*/
if (isroot){
if (prefix0 && (prefix1 = strdup(prefix0)) == NULL){
clicon_err(OE_UNIX, errno, "strdup");
goto done;
}
}
else{
y = xml_spec(x0);
if ((prefix1 = strdup(yang_find_myprefix(y))) == NULL){
clicon_err(OE_UNIX, errno, "strdup");
goto done;
}
}
}
if (add_namespace(x1, x1p, prefix1, namespace) < 0)
goto done;
}
ok:
/* 6. Ensure x1 cache is updated (I think it is done w xmlns_set above) */
retval = 0;
done:
if (prefixb)
free(prefixb);
if (prefix1)
free(prefix1);
return retval;
}
/*! Merge a base tree x0 with x1 with yang spec y
* @param[in] x0 Base xml tree (can be NULL in add scenarios)
* @param[in] y0 Yang spec corresponding to xml-node x0. NULL if x0 is NULL
@ -3201,20 +3373,18 @@ xmlns_assign(cxobj *x)
* Assume x0 and x1 are same on entry and that y is the spec
*/
static int
xml_merge1(cxobj *x0,
xml_merge1(cxobj *x0, /* the target */
yang_stmt *y0,
cxobj *x0p,
cxobj *x1,
cxobj *x1, /* the source */
char **reason)
{
int retval = -1;
char *x1name;
char *x1cname; /* child name */
cxobj *x0c; /* base child */
cxobj *x0b; /* base body */
cxobj *x1c; /* mod child */
cxobj *x0a; /* x0 xmlns attribute */
cxobj *x1a; /* x1 xmlns attribute */
char *x1name;
char *x1bstr; /* mod body string */
yang_stmt *yc; /* yang child */
cbuf *cbr = NULL; /* Reason buffer */
@ -3243,13 +3413,16 @@ xml_merge1(cxobj *x0,
if (xml_value_set(x0b, x1bstr) < 0)
goto done;
}
if (check_namespaces(x1, x0, x0p) < 0)
goto done;
} /* if LEAF|LEAF_LIST */
else { /* eg Y_CONTAINER, Y_LIST */
if (x0==NULL){
if ((x0 = xml_new(x1name, x0p, (yang_stmt*)y0)) == NULL)
if ((x0 = xml_new(x1name, NULL, (yang_stmt*)y0)) == NULL)
goto done;
}
if (check_namespaces(x1, x0, x0p) < 0)
goto done;
/* Loop through children of the modification tree */
x1c = NULL;
while ((x1c = xml_child_each(x1, x1c, CX_ELMNT)) != NULL) {
@ -3277,19 +3450,11 @@ xml_merge1(cxobj *x0,
goto done;
if (*reason != NULL)
goto ok;
}
} /* while */
if (xml_parent(x0) == NULL &&
xml_insert(x0p, x0, INS_LAST, NULL, NULL) < 0)
goto done;
} /* else Y_CONTAINER */
assert(x0);
/* Copy xmlns attributes (if it does not already exist) */
if ((x1a = xml_find_type(x1, NULL, "xmlns", CX_ATTR)) != NULL)
if (xml_find_type(x0, NULL, "xmlns", CX_ATTR)==NULL){
if ((x0a = xml_dup(x1a)) == NULL)
goto done;
if (xml_addsub(x0, x0a) < 0)
goto done;
}
ok:
retval = 0;
done: