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This commit is contained in:
Olof hagsand 2020-11-05 15:26:11 +01:00
parent ab0bc0ea4b
commit 78f5a6983c
15 changed files with 1206 additions and 86 deletions
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69
lib/src/clixon_path.c
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@ -196,7 +196,7 @@ instance_id_parse(char *path,
return retval;
}
static int
int
clixon_path_free(clixon_path *cplist)
{
clixon_path *cp;
@ -1765,7 +1765,7 @@ clixon_xml_find_instance_id(cxobj *xt,
* example.
* @param[in] yt Yang statement of top symbol (can be yang-spec if top-level)
* @param[out] nsctx Namespace context (should be created on entry)
* @param[in] format Format string for api-path syntax
* @param[in] format Format string for xpath syntax
* @retval -1 Error
* @retval 0 Non-fatal failure, yang bind failures, etc,
* @retval 1 OK with found xml nodes in xvec (if any)
@ -1850,3 +1850,68 @@ clixon_instance_id_bind(yang_stmt *yt,
retval = 0;
goto done;
}
/*! Given (instance-id) path and YANG, parse path, resolve YANG and return parse-tree
*
* Instance-identifier is a subset of XML XPaths and defined in Yang, used in NACM for
* example.
* @param[in] yt Yang statement of top symbol (can be yang-spec if top-level)
* @param[out] cplistp Path parse-tree
* @param[in] format Format string for xpath syntax
* @retval -1 Error
* @retval 0 Non-fatal failure, yang bind failures, etc,
* @retval 1 OK with found xml nodes in xvec (if any)
*/
int
clixon_instance_id_parse(yang_stmt *yt,
clixon_path **cplistp,
const char *format,
...)
{
int retval = -1;
va_list ap;
size_t len;
char *path = NULL;
clixon_path *cplist = NULL;
int ret;
va_start(ap, format);
len = vsnprintf(NULL, 0, format, ap);
va_end(ap);
/* allocate a path string exactly fitting the length */
if ((path = malloc(len+1)) == NULL){
clicon_err(OE_UNIX, errno, "malloc");
goto done;
}
/* second round: actually compute api-path string content */
va_start(ap, format);
if (vsnprintf(path, len+1, format, ap) < 0){
clicon_err(OE_UNIX, errno, "vsnprintf");
va_end(ap);
goto done;
}
va_end(ap);
if (instance_id_parse(path, &cplist) < 0)
goto done;
if (clicon_debug_get())
clixon_path_print(stderr, cplist);
/* Resolve module:name to pointer to yang-stmt, fail if not successful */
if ((ret = instance_id_resolve(cplist, yt)) < 0)
goto done;
if (ret == 0)
goto fail;
if (cplistp){
*cplistp = cplist;
cplist = NULL;
}
retval = 1;
done:
if (cplist)
clixon_path_free(cplist);
if (path)
free(path);
return retval;
fail:
retval = 0;
goto done;
}