Adding upstream version 2.1.30.upstream/2.1.30upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 1816 insertions, 0 deletions

diff --git a/src/parser_xml.c b/src/parser_xml.c
new file mode 100644
index 0000000..5a929da
--- /dev/null
+++ b/src/parser_xml.c
@@ -0,0 +1,1816 @@
+/**
+ * @file parser_xml.c
+ * @author Radek Krejci <rkrejci@cesnet.cz>
+ * @author Michal Vasko <mvasko@cesnet.cz>
+ * @brief XML data parser for libyang
+ *
+ * Copyright (c) 2019 - 2022 CESNET, z.s.p.o.
+ *
+ * This source code is licensed under BSD 3-Clause License (the "License").
+ * You may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://opensource.org/licenses/BSD-3-Clause
+ */
+
+#define _GNU_SOURCE
+
+#include <assert.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "common.h"
+#include "compat.h"
+#include "context.h"
+#include "dict.h"
+#include "in_internal.h"
+#include "log.h"
+#include "parser_data.h"
+#include "parser_internal.h"
+#include "plugins_exts.h"
+#include "plugins_internal.h"
+#include "schema_compile_node.h"
+#include "set.h"
+#include "tree.h"
+#include "tree_data.h"
+#include "tree_data_internal.h"
+#include "tree_schema.h"
+#include "tree_schema_internal.h"
+#include "validation.h"
+#include "xml.h"
+
+void
+lyd_xml_ctx_free(struct lyd_ctx *lydctx)
+{
+    struct lyd_xml_ctx *ctx = (struct lyd_xml_ctx *)lydctx;
+
+    lyd_ctx_free(lydctx);
+    lyxml_ctx_free(ctx->xmlctx);
+    free(ctx);
+}
+
+/**
+ * @brief Parse and create XML metadata.
+ *
+ * @param[in] lydctx XML data parser context.
+ * @param[in] sparent Schema node of the parent.
+ * @param[out] meta List of created metadata instances.
+ * @return LY_ERR value.
+ */
+static LY_ERR
+lydxml_metadata(struct lyd_xml_ctx *lydctx, const struct lysc_node *sparent, struct lyd_meta **meta)
+{
+    LY_ERR ret = LY_SUCCESS;
+    const struct lyxml_ns *ns;
+    struct lys_module *mod;
+    const char *name;
+    size_t name_len;
+    LY_ARRAY_COUNT_TYPE u;
+    ly_bool filter_attrs = 0;
+    struct lyxml_ctx *xmlctx = lydctx->xmlctx;
+
+    *meta = NULL;
+
+    /* check for NETCONF filter unqualified attributes */
+    if (!strcmp(sparent->module->name, "notifications")) {
+        /* ancient module that does not even use the extension */
+        filter_attrs = 1;
+    } else {
+        LY_ARRAY_FOR(sparent->exts, u) {
+            if (!strcmp(sparent->exts[u].def->name, "get-filter-element-attributes") &&
+                    !strcmp(sparent->exts[u].def->module->name, "ietf-netconf")) {
+                filter_attrs = 1;
+                break;
+            }
+        }
+    }
+
+    while (xmlctx->status == LYXML_ATTRIBUTE) {
+        if (!xmlctx->prefix_len) {
+            /* in XML all attributes must be prefixed except NETCONF filter ones marked by an extension */
+            if (filter_attrs && (!ly_strncmp("type", xmlctx->name, xmlctx->name_len) ||
+                    !ly_strncmp("select", xmlctx->name, xmlctx->name_len))) {
+                mod = ly_ctx_get_module_implemented(xmlctx->ctx, "ietf-netconf");
+                if (!mod) {
+                    LOGVAL(xmlctx->ctx, LYVE_REFERENCE,
+                            "Missing (or not implemented) YANG module \"ietf-netconf\" for special filter attributes.");
+                    ret = LY_ENOTFOUND;
+                    goto cleanup;
+                }
+                goto create_meta;
+            }
+
+            if (lydctx->parse_opts & LYD_PARSE_STRICT) {
+                LOGVAL(xmlctx->ctx, LYVE_REFERENCE, "Missing mandatory prefix for XML metadata \"%.*s\".",
+                        (int)xmlctx->name_len, xmlctx->name);
+                ret = LY_EVALID;
+                goto cleanup;
+            }
+
+            /* skip attr */
+            LY_CHECK_GOTO(ret = lyxml_ctx_next(xmlctx), cleanup);
+            assert(xmlctx->status == LYXML_ATTR_CONTENT);
+            LY_CHECK_GOTO(ret = lyxml_ctx_next(xmlctx), cleanup);
+            continue;
+        }
+
+        /* get namespace of the attribute to find its annotation definition */
+        ns = lyxml_ns_get(&xmlctx->ns, xmlctx->prefix, xmlctx->prefix_len);
+        if (!ns) {
+            /* unknown namespace, XML error */
+            LOGVAL(xmlctx->ctx, LYVE_REFERENCE, "Unknown XML prefix \"%.*s\".", (int)xmlctx->prefix_len, xmlctx->prefix);
+            ret = LY_ENOTFOUND;
+            goto cleanup;
+        }
+
+        /* get the module with metadata definition */
+        mod = ly_ctx_get_module_implemented_ns(xmlctx->ctx, ns->uri);
+        if (!mod) {
+            if (lydctx->parse_opts & LYD_PARSE_STRICT) {
+                LOGVAL(xmlctx->ctx, LYVE_REFERENCE,
+                        "Unknown (or not implemented) YANG module with namespace \"%s\" for metadata \"%.*s%s%.*s\".",
+                        ns->uri, (int)xmlctx->prefix_len, xmlctx->prefix, xmlctx->prefix_len ? ":" : "",
+                        (int)xmlctx->name_len, xmlctx->name);
+                ret = LY_ENOTFOUND;
+                goto cleanup;
+            }
+
+            /* skip attr */
+            LY_CHECK_GOTO(ret = lyxml_ctx_next(xmlctx), cleanup);
+            assert(xmlctx->status == LYXML_ATTR_CONTENT);
+            LY_CHECK_GOTO(ret = lyxml_ctx_next(xmlctx), cleanup);
+            continue;
+        }
+
+create_meta:
+        /* remember meta name and get its content */
+        name = xmlctx->name;
+        name_len = xmlctx->name_len;
+        LY_CHECK_GOTO(ret = lyxml_ctx_next(xmlctx), cleanup);
+        assert(xmlctx->status == LYXML_ATTR_CONTENT);
+
+        /* create metadata */
+        ret = lyd_parser_create_meta((struct lyd_ctx *)lydctx, NULL, meta, mod, name, name_len, xmlctx->value,
+                xmlctx->value_len, &xmlctx->dynamic, LY_VALUE_XML, &xmlctx->ns, LYD_HINT_DATA, sparent);
+        LY_CHECK_GOTO(ret, cleanup);
+
+        /* next attribute */
+        LY_CHECK_GOTO(ret = lyxml_ctx_next(xmlctx), cleanup);
+    }
+
+cleanup:
+    if (ret) {
+        lyd_free_meta_siblings(*meta);
+        *meta = NULL;
+    }
+    return ret;
+}
+
+static LY_ERR
+lydxml_attrs(struct lyxml_ctx *xmlctx, struct lyd_attr **attr)
+{
+    LY_ERR ret = LY_SUCCESS;
+    const struct lyxml_ns *ns;
+    void *val_prefix_data;
+    LY_VALUE_FORMAT format;
+    struct lyd_attr *attr2;
+    const char *name, *prefix;
+    size_t name_len, prefix_len;
+
+    assert(attr);
+    *attr = NULL;
+
+    while (xmlctx->status == LYXML_ATTRIBUTE) {
+        if (*attr) {
+            attr2 = *attr;
+        } else {
+            attr2 = NULL;
+        }
+
+        /* remember attr prefix, name, and get its content */
+        prefix = xmlctx->prefix;
+        prefix_len = xmlctx->prefix_len;
+        name = xmlctx->name;
+        name_len = xmlctx->name_len;
+        LY_CHECK_GOTO(ret = lyxml_ctx_next(xmlctx), cleanup);
+        assert(xmlctx->status == LYXML_ATTR_CONTENT);
+
+        /* handle special "xml" attribute prefix */
+        if ((prefix_len == 3) && !strncmp(prefix, "xml", 3)) {
+            name = prefix;
+            name_len += 1 + prefix_len;
+            prefix = NULL;
+            prefix_len = 0;
+        }
+
+        /* find namespace of the attribute, if any */
+        ns = NULL;
+        if (prefix_len) {
+            ns = lyxml_ns_get(&xmlctx->ns, prefix, prefix_len);
+            if (!ns) {
+                LOGVAL(xmlctx->ctx, LYVE_REFERENCE, "Unknown XML prefix \"%.*s\".", (int)prefix_len, prefix);
+                ret = LY_EVALID;
+                goto cleanup;
+            }
+        }
+
+        /* get value prefixes */
+        val_prefix_data = NULL;
+        LY_CHECK_GOTO(ret = ly_store_prefix_data(xmlctx->ctx, xmlctx->value, xmlctx->value_len, LY_VALUE_XML,
+                &xmlctx->ns, &format, &val_prefix_data), cleanup);
+
+        /* attr2 is always changed to the created attribute */
+        ret = lyd_create_attr(NULL, &attr2, xmlctx->ctx, name, name_len, prefix, prefix_len, ns ? ns->uri : NULL,
+                ns ? strlen(ns->uri) : 0, xmlctx->value, xmlctx->value_len, &xmlctx->dynamic, format, val_prefix_data,
+                LYD_HINT_DATA);
+        LY_CHECK_GOTO(ret, cleanup);
+
+        if (!*attr) {
+            *attr = attr2;
+        }
+
+        /* next attribute */
+        LY_CHECK_GOTO(ret = lyxml_ctx_next(xmlctx), cleanup);
+    }
+
+cleanup:
+    if (ret) {
+        lyd_free_attr_siblings(xmlctx->ctx, *attr);
+        *attr = NULL;
+    }
+    return ret;
+}
+
+static LY_ERR
+lydxml_check_list(struct lyxml_ctx *xmlctx, const struct lysc_node *list)
+{
+    LY_ERR ret = LY_SUCCESS, r;
+    enum LYXML_PARSER_STATUS next;
+    struct ly_set key_set = {0};
+    const struct lysc_node *snode;
+    uint32_t i, parents_count;
+
+    assert(list && (list->nodetype == LYS_LIST));
+
+    /* get all keys into a set (keys do not have if-features or anything) */
+    snode = NULL;
+    while ((snode = lys_getnext(snode, list, NULL, 0)) && (snode->flags & LYS_KEY)) {
+        ret = ly_set_add(&key_set, (void *)snode, 1, NULL);
+        LY_CHECK_GOTO(ret, cleanup);
+    }
+
+    /* remember parent count */
+    parents_count = xmlctx->elements.count;
+
+    while (xmlctx->status == LYXML_ELEMENT) {
+        /* find key definition */
+        for (i = 0; i < key_set.count; ++i) {
+            snode = (const struct lysc_node *)key_set.objs[i];
+            if (!ly_strncmp(snode->name, xmlctx->name, xmlctx->name_len)) {
+                break;
+            }
+        }
+        LY_CHECK_GOTO(ret = lyxml_ctx_next(xmlctx), cleanup);
+
+        /* skip attributes */
+        while (xmlctx->status == LYXML_ATTRIBUTE) {
+            LY_CHECK_GOTO(ret = lyxml_ctx_next(xmlctx), cleanup);
+            assert(xmlctx->status == LYXML_ATTR_CONTENT);
+            LY_CHECK_GOTO(ret = lyxml_ctx_next(xmlctx), cleanup);
+        }
+
+        assert(xmlctx->status == LYXML_ELEM_CONTENT);
+        if (i < key_set.count) {
+            /* validate the value */
+            r = lys_value_validate(NULL, snode, xmlctx->value, xmlctx->value_len, LY_VALUE_XML, &xmlctx->ns);
+            if (!r) {
+                /* key with a valid value, remove from the set */
+                ly_set_rm_index(&key_set, i, NULL);
+            }
+        }
+
+        /* parser next */
+        LY_CHECK_GOTO(ret = lyxml_ctx_next(xmlctx), cleanup);
+
+        /* skip any children, resursively */
+        while (xmlctx->status == LYXML_ELEMENT) {
+            while (parents_count < xmlctx->elements.count) {
+                LY_CHECK_GOTO(ret = lyxml_ctx_next(xmlctx), cleanup);
+            }
+            assert(xmlctx->status == LYXML_ELEM_CLOSE);
+            LY_CHECK_GOTO(ret = lyxml_ctx_next(xmlctx), cleanup);
+        }
+
+        /* parser next, but do not parse closing element of the list because it would remove its namespaces */
+        assert(xmlctx->status == LYXML_ELEM_CLOSE);
+        LY_CHECK_GOTO(ret = lyxml_ctx_peek(xmlctx, &next), cleanup);
+        if (next != LYXML_ELEM_CLOSE) {
+            LY_CHECK_GOTO(ret = lyxml_ctx_next(xmlctx), cleanup);
+        }
+    }
+
+    if (key_set.count) {
+        /* some keys are missing/did not validate */
+        ret = LY_ENOT;
+    }
+
+cleanup:
+    ly_set_erase(&key_set, NULL);
+    return ret;
+}
+
+/**
+ * @brief Skip an element with all its descendants.
+ *
+ * @param[in] xmlctx XML parser context.
+ * @return LY_ERR value.
+ */
+static LY_ERR
+lydxml_data_skip(struct lyxml_ctx *xmlctx)
+{
+    uint32_t parents_count;
+
+    /* remember current number of parents */
+    parents_count = xmlctx->elements.count;
+    assert(parents_count);
+
+    /* skip after the content */
+    while (xmlctx->status != LYXML_ELEM_CONTENT) {
+        LY_CHECK_RET(lyxml_ctx_next(xmlctx));
+    }
+    LY_CHECK_RET(lyxml_ctx_next(xmlctx));
+
+    /* skip all children elements, recursively, if any */
+    while (parents_count <= xmlctx->elements.count) {
+        LY_CHECK_RET(lyxml_ctx_next(xmlctx));
+    }
+
+    /* close element */
+    assert(xmlctx->status == LYXML_ELEM_CLOSE);
+    LY_CHECK_RET(lyxml_ctx_next(xmlctx));
+
+    return LY_SUCCESS;
+}
+
+/**
+ * @brief Check that the current element can be parsed as a data node.
+ *
+ * @param[in] lydctx XML data parser context.
+ * @param[in,out] snode Found schema node, set to NULL if data node cannot be created.
+ * @return LY_ERR value.
+ */
+static LY_ERR
+lydxml_data_check_opaq(struct lyd_xml_ctx *lydctx, const struct lysc_node **snode)
+{
+    LY_ERR ret = LY_SUCCESS;
+    struct lyxml_ctx *xmlctx = lydctx->xmlctx, pxmlctx;
+
+    if (!(lydctx->parse_opts & LYD_PARSE_OPAQ)) {
+        /* only checks specific to opaque nodes */
+        return LY_SUCCESS;
+    }
+
+    if (!((*snode)->nodetype & (LYD_NODE_TERM | LYD_NODE_INNER))) {
+        /* nothing to check */
+        return LY_SUCCESS;
+    }
+
+    assert(xmlctx->elements.count);
+
+    /* backup parser */
+    LY_CHECK_RET(lyxml_ctx_backup(xmlctx, &pxmlctx));
+
+    /* skip attributes */
+    while (xmlctx->status == LYXML_ATTRIBUTE) {
+        LY_CHECK_GOTO(ret = lyxml_ctx_next(xmlctx), restore);
+        LY_CHECK_GOTO(ret = lyxml_ctx_next(xmlctx), restore);
+    }
+
+    if ((*snode)->nodetype & LYD_NODE_TERM) {
+        /* value may not be valid in which case we parse it as an opaque node */
+        if (lys_value_validate(NULL, *snode, xmlctx->value, xmlctx->value_len, LY_VALUE_XML, &xmlctx->ns)) {
+            LOGVRB("Parsing opaque term node \"%s\" with invalid value \"%.*s\".", (*snode)->name, xmlctx->value_len,
+                    xmlctx->value);
+            *snode = NULL;
+        }
+    } else if ((*snode)->nodetype == LYS_LIST) {
+        /* skip content */
+        LY_CHECK_GOTO(ret = lyxml_ctx_next(xmlctx), restore);
+
+        if (lydxml_check_list(xmlctx, *snode)) {
+            /* invalid list, parse as opaque if it missing/has invalid some keys */
+            LOGVRB("Parsing opaque list node \"%s\" with missing/invalid keys.", (*snode)->name);
+            *snode = NULL;
+        }
+    } else {
+        /* if there is a non-WS value, it cannot be parsed as an inner node */
+        assert(xmlctx->status == LYXML_ELEM_CONTENT);
+        if (!xmlctx->ws_only) {
+            *snode = NULL;
+        }
+    }
+
+restore:
+    /* restore parser */
+    lyxml_ctx_restore(xmlctx, &pxmlctx);
+    return ret;
+}
+
+/**
+ * @brief Get sensible data hints for an opaque node.
+ *
+ * @param[in] name Node name.
+ * @param[in] name_len Length of @p name.
+ * @param[in] value Node value.
+ * @param[in] value_len Length of @p value.
+ * @param[in] first Node first sibling.
+ * @param[in] ns Node module namespace, NULL for no namespace.
+ * @param[out] hints Data hints to use.
+ * @param[out] anchor Anchor to insert after in case of a list.
+ */
+static void
+lydxml_get_hints_opaq(const char *name, size_t name_len, const char *value, size_t value_len, struct lyd_node *first,
+        const char *ns, uint32_t *hints, struct lyd_node **anchor)
+{
+    struct lyd_node_opaq *opaq;
+    char *ptr;
+    long num;
+
+    *hints = 0;
+    *anchor = NULL;
+
+    if (!value_len) {
+        /* no value */
+        *hints |= LYD_VALHINT_EMPTY;
+    } else if (!strncmp(value, "true", value_len) || !strncmp(value, "false", value_len)) {
+        /* boolean value */
+        *hints |= LYD_VALHINT_BOOLEAN;
+    } else {
+        num = strtol(value, &ptr, 10);
+        if ((unsigned)(ptr - value) == value_len) {
+            /* number value */
+            *hints |= LYD_VALHINT_DECNUM;
+            if ((num < INT32_MIN) || (num > UINT32_MAX)) {
+                /* large number */
+                *hints |= LYD_VALHINT_NUM64;
+            }
+        } else {
+            /* string value */
+            *hints |= LYD_VALHINT_STRING;
+        }
+    }
+
+    if (!first) {
+        return;
+    }
+
+    /* search backwards to find the last instance */
+    do {
+        first = first->prev;
+        if (first->schema) {
+            continue;
+        }
+
+        opaq = (struct lyd_node_opaq *)first;
+        assert(opaq->format == LY_VALUE_XML);
+        if (!ly_strncmp(opaq->name.name, name, name_len) &&
+                ((ns && !strcmp(opaq->name.module_ns, ns)) || (!ns && !opaq->name.module_ns))) {
+            if (opaq->value && opaq->value[0]) {
+                /* leaf-list nodes */
+                opaq->hints |= LYD_NODEHINT_LEAFLIST;
+                *hints |= LYD_NODEHINT_LEAFLIST;
+            } else {
+                /* list nodes */
+                opaq->hints |= LYD_NODEHINT_LIST;
+                *hints |= LYD_NODEHINT_LIST;
+            }
+            *anchor = first;
+            break;
+        }
+    } while (first->prev->next);
+}
+
+/**
+ * @brief Get schema node for the current element.
+ *
+ * @param[in] lydctx XML data parser context.
+ * @param[in] parent Parsed parent data node, if any.
+ * @param[in] prefix Element prefix, if any.
+ * @param[in] prefix_len Length of @p prefix.
+ * @param[in] name Element name.
+ * @param[in] name_len Length of @p name.
+ * @param[out] snode Found schema node, NULL if no suitable was found.
+ * @param[out] ext Extension instance that provided @p snode, if any.
+ * @return LY_SUCCESS on success;
+ * @return LY_ERR on error.
+ */
+static LY_ERR
+lydxml_subtree_snode(struct lyd_xml_ctx *lydctx, const struct lyd_node *parent, const char *prefix, size_t prefix_len,
+        const char *name, size_t name_len, const struct lysc_node **snode, struct lysc_ext_instance **ext)
+{
+    LY_ERR r;
+    struct lyxml_ctx *xmlctx;
+    const struct ly_ctx *ctx;
+    const struct lyxml_ns *ns;
+    struct lys_module *mod;
+    uint32_t getnext_opts;
+
+    xmlctx = lydctx->xmlctx;
+    ctx = xmlctx->ctx;
+    getnext_opts = lydctx->int_opts & LYD_INTOPT_REPLY ? LYS_GETNEXT_OUTPUT : 0;
+
+    *snode = NULL;
+    *ext = NULL;
+
+    /* get current namespace */
+    ns = lyxml_ns_get(&xmlctx->ns, prefix, prefix_len);
+    if (!ns) {
+        if (lydctx->int_opts & LYD_INTOPT_ANY) {
+            goto unknown_module;
+        }
+
+        if (prefix_len) {
+            LOGVAL(ctx, LYVE_REFERENCE, "Unknown XML prefix \"%.*s\".", (int)prefix_len, prefix);
+        } else {
+            LOGVAL(ctx, LYVE_REFERENCE, "Missing XML namespace.");
+        }
+        return LY_EVALID;
+    }
+
+    /* get the element module, use parent context if possible because of extensions */
+    mod = ly_ctx_get_module_implemented_ns(parent ? LYD_CTX(parent) : ctx, ns->uri);
+    if (!mod) {
+        /* check for extension data */
+        r = ly_nested_ext_schema(parent, NULL, prefix, prefix_len, LY_VALUE_XML, &lydctx->xmlctx->ns, name, name_len,
+                snode, ext);
+        if (r != LY_ENOT) {
+            /* success or error */
+            return r;
+        }
+
+unknown_module:
+        if (lydctx->parse_opts & LYD_PARSE_STRICT) {
+            LOGVAL(ctx, LYVE_REFERENCE, "No module with namespace \"%s\" in the context.", ns->uri);
+            return LY_EVALID;
+        }
+        return LY_SUCCESS;
+    }
+
+    /* get the schema node */
+    if (mod) {
+        if (!parent && lydctx->ext) {
+            *snode = lysc_ext_find_node(lydctx->ext, mod, name, name_len, 0, getnext_opts);
+        } else {
+            *snode = lys_find_child(parent ? parent->schema : NULL, mod, name, name_len, 0, getnext_opts);
+        }
+        if (!*snode) {
+            /* check for extension data */
+            r = ly_nested_ext_schema(parent, NULL, prefix, prefix_len, LY_VALUE_XML, &lydctx->xmlctx->ns, name,
+                    name_len, snode, ext);
+            if (r != LY_ENOT) {
+                /* success or error */
+                return r;
+            }
+
+            /* unknown data node */
+            if (lydctx->parse_opts & LYD_PARSE_STRICT) {
+                if (parent) {
+                    LOGVAL(ctx, LYVE_REFERENCE, "Node \"%.*s\" not found as a child of \"%s\" node.",
+                            (int)name_len, name, LYD_NAME(parent));
+                } else if (lydctx->ext) {
+                    if (lydctx->ext->argument) {
+                        LOGVAL(ctx, LYVE_REFERENCE, "Node \"%.*s\" not found in the \"%s\" %s extension instance.",
+                                (int)name_len, name, lydctx->ext->argument, lydctx->ext->def->name);
+                    } else {
+                        LOGVAL(ctx, LYVE_REFERENCE, "Node \"%.*s\" not found in the %s extension instance.",
+                                (int)name_len, name, lydctx->ext->def->name);
+                    }
+                } else {
+                    LOGVAL(ctx, LYVE_REFERENCE, "Node \"%.*s\" not found in the \"%s\" module.",
+                            (int)name_len, name, mod->name);
+                }
+                return LY_EVALID;
+            }
+            return LY_SUCCESS;
+        } else {
+            /* check that schema node is valid and can be used */
+            LY_CHECK_RET(lyd_parser_check_schema((struct lyd_ctx *)lydctx, *snode));
+            LY_CHECK_RET(lydxml_data_check_opaq(lydctx, snode));
+        }
+    }
+
+    return LY_SUCCESS;
+}
+
+/**
+ * @brief Parse XML subtree.
+ *
+ * @param[in] lydctx XML YANG data parser context.
+ * @param[in,out] parent Parent node where the children are inserted. NULL in case of parsing top-level elements.
+ * @param[in,out] first_p Pointer to the first (@p parent or top-level) child. In case there were already some siblings,
+ * this may point to a previously existing node.
+ * @param[in,out] parsed Optional set to add all the parsed siblings into.
+ * @return LY_ERR value.
+ */
+static LY_ERR
+lydxml_subtree_r(struct lyd_xml_ctx *lydctx, struct lyd_node *parent, struct lyd_node **first_p, struct ly_set *parsed)
+{
+    LY_ERR ret = LY_SUCCESS;
+    const char *prefix, *name, *ns_uri;
+    size_t prefix_len, name_len;
+    struct lyxml_ctx *xmlctx;
+    const struct ly_ctx *ctx;
+    const struct lyxml_ns *ns;
+    struct lyd_meta *meta = NULL;
+    struct lyd_attr *attr = NULL;
+    const struct lysc_node *snode;
+    struct lysc_ext_instance *ext;
+    uint32_t prev_parse_opts, orig_parse_opts, prev_int_opts, hints;
+    struct lyd_node *node = NULL, *anchor, *insert_anchor = NULL;
+    void *val_prefix_data = NULL;
+    LY_VALUE_FORMAT format;
+    ly_bool parse_subtree;
+    char *val;
+
+    assert(parent || first_p);
+
+    xmlctx = lydctx->xmlctx;
+    ctx = xmlctx->ctx;
+
+    parse_subtree = lydctx->parse_opts & LYD_PARSE_SUBTREE ? 1 : 0;
+    /* all descendants should be parsed */
+    lydctx->parse_opts &= ~LYD_PARSE_SUBTREE;
+    orig_parse_opts = lydctx->parse_opts;
+
+    assert(xmlctx->status == LYXML_ELEMENT);
+
+    /* remember element prefix and name */
+    prefix = xmlctx->prefix;
+    prefix_len = xmlctx->prefix_len;
+    name = xmlctx->name;
+    name_len = xmlctx->name_len;
+
+    /* parser next */
+    LY_CHECK_GOTO(ret = lyxml_ctx_next(xmlctx), error);
+
+    /* get the schema node */
+    LY_CHECK_GOTO(ret = lydxml_subtree_snode(lydctx, parent, prefix, prefix_len, name, name_len, &snode, &ext), error);
+
+    if (!snode && !(lydctx->parse_opts & LYD_PARSE_OPAQ)) {
+        LOGVRB("Skipping parsing of unknown node \"%.*s\".", name_len, name);
+
+        /* skip element with children */
+        LY_CHECK_GOTO(ret = lydxml_data_skip(xmlctx), error);
+        return LY_SUCCESS;
+    }
+
+    /* create metadata/attributes */
+    if (xmlctx->status == LYXML_ATTRIBUTE) {
+        if (snode) {
+            ret = lydxml_metadata(lydctx, snode, &meta);
+            LY_CHECK_GOTO(ret, error);
+        } else {
+            assert(lydctx->parse_opts & LYD_PARSE_OPAQ);
+            ret = lydxml_attrs(xmlctx, &attr);
+            LY_CHECK_GOTO(ret, error);
+        }
+    }
+
+    assert(xmlctx->status == LYXML_ELEM_CONTENT);
+    if (!snode) {
+        assert(lydctx->parse_opts & LYD_PARSE_OPAQ);
+
+        if (xmlctx->ws_only) {
+            /* ignore WS-only value */
+            if (xmlctx->dynamic) {
+                free((char *)xmlctx->value);
+            }
+            xmlctx->dynamic = 0;
+            xmlctx->value = "";
+            xmlctx->value_len = 0;
+            format = LY_VALUE_XML;
+        } else {
+            /* get value prefixes */
+            ret = ly_store_prefix_data(xmlctx->ctx, xmlctx->value, xmlctx->value_len, LY_VALUE_XML,
+                    &xmlctx->ns, &format, &val_prefix_data);
+            LY_CHECK_GOTO(ret, error);
+        }
+
+        /* get NS again, it may have been backed up and restored */
+        ns = lyxml_ns_get(&xmlctx->ns, prefix, prefix_len);
+        ns_uri = ns ? ns->uri : NULL;
+
+        /* get best-effort node hints */
+        lydxml_get_hints_opaq(name, name_len, xmlctx->value, xmlctx->value_len, parent ? lyd_child(parent) : *first_p,
+                ns_uri, &hints, &insert_anchor);
+
+        /* create node */
+        ret = lyd_create_opaq(ctx, name, name_len, prefix, prefix_len, ns_uri, ns_uri ? strlen(ns_uri) : 0,
+                xmlctx->value, xmlctx->value_len, &xmlctx->dynamic, format, val_prefix_data, hints, &node);
+        LY_CHECK_GOTO(ret, error);
+
+        /* parser next */
+        LY_CHECK_GOTO(ret = lyxml_ctx_next(xmlctx), error);
+
+        /* process children */
+        while (xmlctx->status == LYXML_ELEMENT) {
+            ret = lydxml_subtree_r(lydctx, node, lyd_node_child_p(node), NULL);
+            LY_CHECK_GOTO(ret, error);
+        }
+    } else if (snode->nodetype & LYD_NODE_TERM) {
+        /* create node */
+        LY_CHECK_GOTO(ret = lyd_parser_create_term((struct lyd_ctx *)lydctx, snode, xmlctx->value, xmlctx->value_len,
+                &xmlctx->dynamic, LY_VALUE_XML, &xmlctx->ns, LYD_HINT_DATA, &node), error);
+        LOG_LOCSET(snode, node, NULL, NULL);
+
+        if (parent && (node->schema->flags & LYS_KEY)) {
+            /* check the key order, the anchor must never be a key */
+            anchor = lyd_insert_get_next_anchor(lyd_child(parent), node);
+            if (anchor && anchor->schema && (anchor->schema->flags & LYS_KEY)) {
+                if (lydctx->parse_opts & LYD_PARSE_STRICT) {
+                    LOGVAL(ctx, LYVE_DATA, "Invalid position of the key \"%s\" in a list.", node->schema->name);
+                    ret = LY_EVALID;
+                    goto error;
+                } else {
+                    LOGWRN(ctx, "Invalid position of the key \"%s\" in a list.", node->schema->name);
+                }
+            }
+        }
+
+        /* parser next */
+        LY_CHECK_GOTO(ret = lyxml_ctx_next(xmlctx), error);
+
+        /* no children expected */
+        if (xmlctx->status == LYXML_ELEMENT) {
+            LOGVAL(ctx, LYVE_SYNTAX, "Child element \"%.*s\" inside a terminal node \"%s\" found.",
+                    (int)xmlctx->name_len, xmlctx->name, snode->name);
+            ret = LY_EVALID;
+            goto error;
+        }
+    } else if (snode->nodetype & LYD_NODE_INNER) {
+        if (!xmlctx->ws_only) {
+            /* value in inner node */
+            LOGVAL(ctx, LYVE_SYNTAX, "Text value \"%.*s\" inside an inner node \"%s\" found.",
+                    (int)xmlctx->value_len, xmlctx->value, snode->name);
+            ret = LY_EVALID;
+            goto error;
+        }
+
+        /* create node */
+        ret = lyd_create_inner(snode, &node);
+        LY_CHECK_GOTO(ret, error);
+
+        LOG_LOCSET(snode, node, NULL, NULL);
+
+        /* parser next */
+        LY_CHECK_GOTO(ret = lyxml_ctx_next(xmlctx), error);
+
+        prev_parse_opts = lydctx->parse_opts;
+        if (ext) {
+            /* only parse these extension data and validate afterwards */
+            lydctx->parse_opts |= LYD_PARSE_ONLY;
+        }
+
+        /* process children */
+        while (xmlctx->status == LYXML_ELEMENT) {
+            ret = lydxml_subtree_r(lydctx, node, lyd_node_child_p(node), NULL);
+            LY_CHECK_GOTO(ret, error);
+        }
+
+        /* restore options */
+        lydctx->parse_opts = prev_parse_opts;
+
+        if (snode->nodetype == LYS_LIST) {
+            /* check all keys exist */
+            LY_CHECK_GOTO(ret = lyd_parse_check_keys(node), error);
+        }
+
+        if (!(lydctx->parse_opts & LYD_PARSE_ONLY)) {
+            /* new node validation, autodelete CANNOT occur, all nodes are new */
+            ret = lyd_validate_new(lyd_node_child_p(node), snode, NULL, NULL);
+            LY_CHECK_GOTO(ret, error);
+
+            /* add any missing default children */
+            ret = lyd_new_implicit_r(node, lyd_node_child_p(node), NULL, NULL, &lydctx->node_when, &lydctx->node_types,
+                    &lydctx->ext_node, (lydctx->val_opts & LYD_VALIDATE_NO_STATE) ? LYD_IMPLICIT_NO_STATE : 0, NULL);
+            LY_CHECK_GOTO(ret, error);
+        }
+
+        if (snode->nodetype & (LYS_RPC | LYS_ACTION | LYS_NOTIF)) {
+            /* rememeber the RPC/action/notification */
+            lydctx->op_node = node;
+        }
+    } else if (snode->nodetype & LYD_NODE_ANY) {
+        if ((snode->nodetype == LYS_ANYDATA) && !xmlctx->ws_only) {
+            /* value in anydata node, we expect a tree */
+            LOGVAL(ctx, LYVE_SYNTAX, "Text value \"%.*s\" inside an anydata node \"%s\" found.",
+                    (int)xmlctx->value_len < 20 ? xmlctx->value_len : 20, xmlctx->value, snode->name);
+            ret = LY_EVALID;
+            goto error;
+        }
+
+        if (!xmlctx->ws_only) {
+            /* use an arbitrary text value for anyxml */
+            val = strndup(xmlctx->value, xmlctx->value_len);
+            LY_CHECK_ERR_GOTO(!val, LOGMEM(xmlctx->ctx); ret = LY_EMEM, error);
+
+            /* parser next */
+            LY_CHECK_ERR_GOTO(ret = lyxml_ctx_next(xmlctx), free(val), error);
+
+            /* create node */
+            ret = lyd_create_any(snode, val, LYD_ANYDATA_STRING, 1, &node);
+            LY_CHECK_ERR_GOTO(ret, free(val), error);
+        } else {
+            /* parser next */
+            LY_CHECK_GOTO(ret = lyxml_ctx_next(xmlctx), error);
+
+            /* update options so that generic data can be parsed */
+            prev_parse_opts = lydctx->parse_opts;
+            lydctx->parse_opts &= ~LYD_PARSE_STRICT;
+            lydctx->parse_opts |= LYD_PARSE_OPAQ | (ext ? LYD_PARSE_ONLY : 0);
+            prev_int_opts = lydctx->int_opts;
+            lydctx->int_opts |= LYD_INTOPT_ANY | LYD_INTOPT_WITH_SIBLINGS;
+
+            /* parse any data tree */
+            anchor = NULL;
+            while (xmlctx->status == LYXML_ELEMENT) {
+                ret = lydxml_subtree_r(lydctx, NULL, &anchor, NULL);
+                if (ret) {
+                    lyd_free_siblings(anchor);
+                    break;
+                }
+            }
+
+            /* restore options */
+            lydctx->parse_opts = prev_parse_opts;
+            lydctx->int_opts = prev_int_opts;
+
+            LY_CHECK_GOTO(ret, error);
+
+            /* create node */
+            ret = lyd_create_any(snode, anchor, LYD_ANYDATA_DATATREE, 1, &node);
+            LY_CHECK_GOTO(ret, error);
+        }
+    }
+    assert(node);
+
+    if (snode) {
+        /* add/correct flags */
+        LY_CHECK_GOTO(ret = lyd_parse_set_data_flags(node, &meta, (struct lyd_ctx *)lydctx, ext), error);
+
+        if (!(lydctx->parse_opts & LYD_PARSE_ONLY)) {
+            /* store for ext instance node validation, if needed */
+            LY_CHECK_GOTO(ret = lyd_validate_node_ext(node, &lydctx->ext_node), error);
+        }
+    }
+
+    /* parser next */
+    assert(xmlctx->status == LYXML_ELEM_CLOSE);
+    if (!parse_subtree) {
+        LY_CHECK_GOTO(ret = lyxml_ctx_next(xmlctx), error);
+    }
+
+    /* add metadata/attributes */
+    if (snode) {
+        lyd_insert_meta(node, meta, 0);
+    } else {
+        lyd_insert_attr(node, attr);
+    }
+
+    /* insert, keep first pointer correct */
+    if (insert_anchor) {
+        lyd_insert_after(insert_anchor, node);
+    } else if (ext) {
+        LY_CHECK_GOTO(ret = lyplg_ext_insert(parent, node), error);
+    } else {
+        lyd_insert_node(parent, first_p, node, lydctx->parse_opts & LYD_PARSE_ORDERED ? 1 : 0);
+    }
+    while (!parent && (*first_p)->prev->next) {
+        *first_p = (*first_p)->prev;
+    }
+
+    /* rememeber a successfully parsed node */
+    if (parsed) {
+        ly_set_add(parsed, node, 1, NULL);
+    }
+
+    lydctx->parse_opts = orig_parse_opts;
+    LOG_LOCBACK(node ? 1 : 0, node ? 1 : 0, 0, 0);
+    return LY_SUCCESS;
+
+error:
+    lydctx->parse_opts = orig_parse_opts;
+    LOG_LOCBACK(node ? 1 : 0, node ? 1 : 0, 0, 0);
+    lyd_free_meta_siblings(meta);
+    lyd_free_attr_siblings(ctx, attr);
+    lyd_free_tree(node);
+    return ret;
+}
+
+/**
+ * @brief Parse a specific XML element into an opaque node.
+ *
+ * @param[in] xmlctx XML parser context.
+ * @param[in] name Name of the element.
+ * @param[in] uri URI of the element.
+ * @param[in] value Whether a value is expected in the element.
+ * @param[out] evnp Parsed envelope (opaque node).
+ * @return LY_SUCCESS on success.
+ * @return LY_ENOT if the specified element did not match.
+ * @return LY_ERR value on error.
+ */
+static LY_ERR
+lydxml_envelope(struct lyxml_ctx *xmlctx, const char *name, const char *uri, ly_bool value, struct lyd_node **envp)
+{
+    LY_ERR rc = LY_SUCCESS;
+    const struct lyxml_ns *ns;
+    struct lyd_attr *attr = NULL;
+    const char *prefix;
+    size_t prefix_len;
+
+    assert(xmlctx->status == LYXML_ELEMENT);
+    if (ly_strncmp(name, xmlctx->name, xmlctx->name_len)) {
+        /* not the expected element */
+        return LY_ENOT;
+    }
+
+    prefix = xmlctx->prefix;
+    prefix_len = xmlctx->prefix_len;
+    ns = lyxml_ns_get(&xmlctx->ns, prefix, prefix_len);
+    if (!ns) {
+        LOGVAL(xmlctx->ctx, LYVE_REFERENCE, "Unknown XML prefix \"%.*s\".", (int)prefix_len, prefix);
+        return LY_EVALID;
+    } else if (strcmp(ns->uri, uri)) {
+        /* different namespace */
+        return LY_ENOT;
+    }
+
+    LY_CHECK_RET(lyxml_ctx_next(xmlctx));
+
+    /* create attributes */
+    if (xmlctx->status == LYXML_ATTRIBUTE) {
+        LY_CHECK_RET(lydxml_attrs(xmlctx, &attr));
+    }
+
+    assert(xmlctx->status == LYXML_ELEM_CONTENT);
+    if (!value && !xmlctx->ws_only) {
+        LOGVAL(xmlctx->ctx, LYVE_SYNTAX, "Unexpected value \"%.*s\" in the \"%s\" element.",
+                (int)xmlctx->value_len, xmlctx->value, name);
+        rc = LY_EVALID;
+        goto cleanup;
+    }
+
+    /* create node */
+    rc = lyd_create_opaq(xmlctx->ctx, name, strlen(name), prefix, prefix_len, uri, strlen(uri), xmlctx->value,
+            xmlctx->ws_only ? 0 : xmlctx->value_len, NULL, LY_VALUE_XML, NULL, 0, envp);
+    LY_CHECK_GOTO(rc, cleanup);
+
+    /* assign atributes */
+    ((struct lyd_node_opaq *)(*envp))->attr = attr;
+    attr = NULL;
+
+    /* parser next element */
+    LY_CHECK_GOTO(rc = lyxml_ctx_next(xmlctx), cleanup);
+
+cleanup:
+    lyd_free_attr_siblings(xmlctx->ctx, attr);
+    if (rc) {
+        lyd_free_tree(*envp);
+        *envp = NULL;
+    }
+    return rc;
+}
+
+LY_ERR
+lyd_parse_xml(const struct ly_ctx *ctx, const struct lysc_ext_instance *ext, struct lyd_node *parent,
+        struct lyd_node **first_p, struct ly_in *in, uint32_t parse_opts, uint32_t val_opts, uint32_t int_opts,
+        struct ly_set *parsed, ly_bool *subtree_sibling, struct lyd_ctx **lydctx_p)
+{
+    LY_ERR rc = LY_SUCCESS;
+    struct lyd_xml_ctx *lydctx;
+    ly_bool parsed_data_nodes = 0;
+    enum LYXML_PARSER_STATUS status;
+
+    assert(ctx && in && lydctx_p);
+    assert(!(parse_opts & ~LYD_PARSE_OPTS_MASK));
+    assert(!(val_opts & ~LYD_VALIDATE_OPTS_MASK));
+
+    /* init context */
+    lydctx = calloc(1, sizeof *lydctx);
+    LY_CHECK_ERR_RET(!lydctx, LOGMEM(ctx), LY_EMEM);
+    LY_CHECK_GOTO(rc = lyxml_ctx_new(ctx, in, &lydctx->xmlctx), cleanup);
+    lydctx->parse_opts = parse_opts;
+    lydctx->val_opts = val_opts;
+    lydctx->int_opts = int_opts;
+    lydctx->free = lyd_xml_ctx_free;
+    lydctx->ext = ext;
+
+    /* find the operation node if it exists already */
+    LY_CHECK_GOTO(rc = lyd_parser_find_operation(parent, int_opts, &lydctx->op_node), cleanup);
+
+    /* parse XML data */
+    while (lydctx->xmlctx->status == LYXML_ELEMENT) {
+        LY_CHECK_GOTO(rc = lydxml_subtree_r(lydctx, parent, first_p, parsed), cleanup);
+        parsed_data_nodes = 1;
+
+        if (!(int_opts & LYD_INTOPT_WITH_SIBLINGS)) {
+            break;
+        }
+    }
+
+    /* check final state */
+    if ((int_opts & LYD_INTOPT_NO_SIBLINGS) && (lydctx->xmlctx->status == LYXML_ELEMENT)) {
+        LOGVAL(ctx, LYVE_SYNTAX, "Unexpected sibling node.");
+        rc = LY_EVALID;
+        goto cleanup;
+    }
+    if ((int_opts & (LYD_INTOPT_RPC | LYD_INTOPT_ACTION | LYD_INTOPT_NOTIF | LYD_INTOPT_REPLY)) && !lydctx->op_node) {
+        LOGVAL(ctx, LYVE_DATA, "Missing the operation node.");
+        rc = LY_EVALID;
+        goto cleanup;
+    }
+
+    if (!parsed_data_nodes) {
+        /* no data nodes were parsed */
+        lydctx->op_node = NULL;
+    }
+
+    if (parse_opts & LYD_PARSE_SUBTREE) {
+        /* check for a sibling element */
+        assert(subtree_sibling);
+        if (!lyxml_ctx_peek(lydctx->xmlctx, &status) && (status == LYXML_ELEMENT)) {
+            *subtree_sibling = 1;
+        } else {
+            *subtree_sibling = 0;
+        }
+    }
+
+cleanup:
+    /* there should be no unres stored if validation should be skipped */
+    assert(!(parse_opts & LYD_PARSE_ONLY) || (!lydctx->node_types.count && !lydctx->meta_types.count &&
+            !lydctx->node_when.count));
+
+    if (rc) {
+        lyd_xml_ctx_free((struct lyd_ctx *)lydctx);
+    } else {
+        *lydctx_p = (struct lyd_ctx *)lydctx;
+
+        /* the XML context is no more needed, freeing it also stops logging line numbers which would be confusing now */
+        lyxml_ctx_free(lydctx->xmlctx);
+        lydctx->xmlctx = NULL;
+    }
+    return rc;
+}
+
+/**
+ * @brief Parse all expected non-data XML elements of a NETCONF rpc message.
+ *
+ * @param[in] xmlctx XML parser context.
+ * @param[out] evnp Parsed envelope(s) (opaque node).
+ * @param[out] int_opts Internal options for parsing the rest of YANG data.
+ * @param[out] close_elem Number of parsed opened elements that need to be closed.
+ * @return LY_SUCCESS on success.
+ * @return LY_ERR value on error.
+ */
+static LY_ERR
+lydxml_env_netconf_rpc(struct lyxml_ctx *xmlctx, struct lyd_node **envp, uint32_t *int_opts, uint32_t *close_elem)
+{
+    LY_ERR rc = LY_SUCCESS, r;
+    struct lyd_node *child;
+
+    assert(envp && !*envp);
+
+    if (xmlctx->status != LYXML_ELEMENT) {
+        /* nothing to parse */
+        assert(xmlctx->status == LYXML_END);
+        goto cleanup;
+    }
+
+    /* parse "rpc" */
+    r = lydxml_envelope(xmlctx, "rpc", "urn:ietf:params:xml:ns:netconf:base:1.0", 0, envp);
+    LY_CHECK_ERR_GOTO(r, rc = r, cleanup);
+
+    /* parse "action", if any */
+    r = lydxml_envelope(xmlctx, "action", "urn:ietf:params:xml:ns:yang:1", 0, &child);
+    if (r == LY_SUCCESS) {
+        /* insert */
+        lyd_insert_node(*envp, NULL, child, 0);
+
+        /* NETCONF action */
+        *int_opts = LYD_INTOPT_NO_SIBLINGS | LYD_INTOPT_ACTION;
+        *close_elem = 2;
+    } else if (r == LY_ENOT) {
+        /* NETCONF RPC */
+        *int_opts = LYD_INTOPT_NO_SIBLINGS | LYD_INTOPT_RPC;
+        *close_elem = 1;
+    } else {
+        rc = r;
+        goto cleanup;
+    }
+
+cleanup:
+    if (rc) {
+        lyd_free_tree(*envp);
+        *envp = NULL;
+    }
+    return rc;
+}
+
+/**
+ * @brief Validate eventTime date-and-time value.
+ *
+ * @param[in] node Opaque eventTime node.
+ * @return LY_SUCCESS on success.
+ * @return LY_ERR value on error.
+ */
+static LY_ERR
+lydxml_env_netconf_eventtime_validate(const struct lyd_node *node)
+{
+    LY_ERR rc = LY_SUCCESS;
+    struct ly_ctx *ctx = (struct ly_ctx *)LYD_CTX(node);
+    struct lysc_ctx cctx;
+    const struct lys_module *mod;
+    LY_ARRAY_COUNT_TYPE u;
+    struct ly_err_item *err = NULL;
+    struct lysp_type *type_p = NULL;
+    struct lysc_pattern **patterns = NULL;
+    const char *value;
+
+    LYSC_CTX_INIT_CTX(cctx, ctx);
+
+    /* get date-and-time parsed type */
+    mod = ly_ctx_get_module_latest(ctx, "ietf-yang-types");
+    assert(mod);
+    LY_ARRAY_FOR(mod->parsed->typedefs, u) {
+        if (!strcmp(mod->parsed->typedefs[u].name, "date-and-time")) {
+            type_p = &mod->parsed->typedefs[u].type;
+            break;
+        }
+    }
+    assert(type_p);
+
+    /* compile patterns */
+    assert(type_p->patterns);
+    LY_CHECK_GOTO(rc = lys_compile_type_patterns(&cctx, type_p->patterns, NULL, &patterns), cleanup);
+
+    /* validate */
+    value = lyd_get_value(node);
+    rc = lyplg_type_validate_patterns(patterns, value, strlen(value), &err);
+
+cleanup:
+    FREE_ARRAY(&cctx.free_ctx, patterns, lysc_pattern_free);
+    if (rc && err) {
+        LOGVAL_ERRITEM(ctx, err);
+        ly_err_free(err);
+        LOGVAL(ctx, LYVE_DATA, "Invalid \"eventTime\" in the notification.");
+    }
+    return rc;
+}
+
+/**
+ * @brief Parse all expected non-data XML elements of a NETCONF notification message.
+ *
+ * @param[in] xmlctx XML parser context.
+ * @param[out] evnp Parsed envelope(s) (opaque node).
+ * @param[out] int_opts Internal options for parsing the rest of YANG data.
+ * @param[out] close_elem Number of parsed opened elements that need to be closed.
+ * @return LY_SUCCESS on success.
+ * @return LY_ERR value on error.
+ */
+static LY_ERR
+lydxml_env_netconf_notif(struct lyxml_ctx *xmlctx, struct lyd_node **envp, uint32_t *int_opts, uint32_t *close_elem)
+{
+    LY_ERR rc = LY_SUCCESS, r;
+    struct lyd_node *child;
+
+    assert(envp && !*envp);
+
+    if (xmlctx->status != LYXML_ELEMENT) {
+        /* nothing to parse */
+        assert(xmlctx->status == LYXML_END);
+        goto cleanup;
+    }
+
+    /* parse "notification" */
+    r = lydxml_envelope(xmlctx, "notification", "urn:ietf:params:xml:ns:netconf:notification:1.0", 0, envp);
+    LY_CHECK_ERR_GOTO(r, rc = r, cleanup);
+
+    /* parse "eventTime" */
+    r = lydxml_envelope(xmlctx, "eventTime", "urn:ietf:params:xml:ns:netconf:notification:1.0", 1, &child);
+    if (r == LY_ENOT) {
+        LOGVAL(xmlctx->ctx, LYVE_REFERENCE, "Unexpected element \"%.*s\" instead of \"eventTime\".",
+                (int)xmlctx->name_len, xmlctx->name);
+        r = LY_EVALID;
+    }
+    LY_CHECK_ERR_GOTO(r, rc = r, cleanup);
+
+    /* insert */
+    lyd_insert_node(*envp, NULL, child, 0);
+
+    /* validate value */
+    r = lydxml_env_netconf_eventtime_validate(child);
+    LY_CHECK_ERR_GOTO(r, rc = r, cleanup);
+
+    /* finish child parsing */
+    if (xmlctx->status != LYXML_ELEM_CLOSE) {
+        assert(xmlctx->status == LYXML_ELEMENT);
+        LOGVAL(xmlctx->ctx, LYVE_SYNTAX, "Unexpected child element \"%.*s\" of \"eventTime\".",
+                (int)xmlctx->name_len, xmlctx->name);
+        rc = LY_EVALID;
+        goto cleanup;
+    }
+    LY_CHECK_GOTO(rc = lyxml_ctx_next(xmlctx), cleanup);
+
+    /* NETCONF notification */
+    *int_opts = LYD_INTOPT_NO_SIBLINGS | LYD_INTOPT_NOTIF;
+    *close_elem = 1;
+
+cleanup:
+    if (rc) {
+        lyd_free_tree(*envp);
+        *envp = NULL;
+    }
+    return rc;
+}
+
+/**
+ * @brief Parse an XML element as an opaque node subtree.
+ *
+ * @param[in] xmlctx XML parser context.
+ * @param[in] parent Parent to append nodes to.
+ * @return LY_ERR value.
+ */
+static LY_ERR
+lydxml_opaq_r(struct lyxml_ctx *xmlctx, struct lyd_node *parent)
+{
+    LY_ERR rc = LY_SUCCESS;
+    const struct lyxml_ns *ns;
+    struct lyd_attr *attr = NULL;
+    struct lyd_node *child = NULL;
+    const char *name, *prefix;
+    size_t name_len, prefix_len;
+
+    assert(xmlctx->status == LYXML_ELEMENT);
+
+    name = xmlctx->name;
+    name_len = xmlctx->name_len;
+    prefix = xmlctx->prefix;
+    prefix_len = xmlctx->prefix_len;
+    ns = lyxml_ns_get(&xmlctx->ns, prefix, prefix_len);
+    if (!ns) {
+        LOGVAL(xmlctx->ctx, LYVE_REFERENCE, "Unknown XML prefix \"%.*s\".", (int)prefix_len, prefix);
+        return LY_EVALID;
+    }
+
+    LY_CHECK_RET(lyxml_ctx_next(xmlctx));
+
+    /* create attributes */
+    if (xmlctx->status == LYXML_ATTRIBUTE) {
+        LY_CHECK_RET(lydxml_attrs(xmlctx, &attr));
+    }
+
+    /* create node */
+    assert(xmlctx->status == LYXML_ELEM_CONTENT);
+    rc = lyd_create_opaq(xmlctx->ctx, name, name_len, prefix, prefix_len, ns->uri, strlen(ns->uri), xmlctx->value,
+            xmlctx->ws_only ? 0 : xmlctx->value_len, NULL, LY_VALUE_XML, NULL, 0, &child);
+    LY_CHECK_GOTO(rc, cleanup);
+
+    /* assign atributes */
+    ((struct lyd_node_opaq *)child)->attr = attr;
+    attr = NULL;
+
+    /* parser next element */
+    LY_CHECK_GOTO(rc = lyxml_ctx_next(xmlctx), cleanup);
+
+    /* parse all the descendants */
+    while (xmlctx->status == LYXML_ELEMENT) {
+        rc = lydxml_opaq_r(xmlctx, child);
+        LY_CHECK_GOTO(rc, cleanup);
+    }
+
+    /* insert */
+    lyd_insert_node(parent, NULL, child, 1);
+
+cleanup:
+    lyd_free_attr_siblings(xmlctx->ctx, attr);
+    if (rc) {
+        lyd_free_tree(child);
+    }
+    return rc;
+}
+
+/**
+ * @brief Parse all expected non-data XML elements of the error-info element in NETCONF rpc-reply message.
+ *
+ * @param[in] xmlctx XML parser context.
+ * @param[in] parent Parent to append nodes to.
+ * @return LY_ERR value.
+ */
+static LY_ERR
+lydxml_env_netconf_rpc_reply_error_info(struct lyxml_ctx *xmlctx, struct lyd_node *parent)
+{
+    LY_ERR r;
+    struct lyd_node *child, *iter;
+    ly_bool no_dup;
+
+    /* there must be some child */
+    if (xmlctx->status == LYXML_ELEM_CLOSE) {
+        LOGVAL(xmlctx->ctx, LYVE_SYNTAX, "Missing child elements of \"error-info\".");
+        return LY_EVALID;
+    }
+
+    while (xmlctx->status == LYXML_ELEMENT) {
+        child = NULL;
+
+        /*
+         * session-id
+         */
+        r = lydxml_envelope(xmlctx, "session-id", "urn:ietf:params:xml:ns:netconf:base:1.0", 1, &child);
+        if (r == LY_SUCCESS) {
+            no_dup = 1;
+            goto check_child;
+        } else if (r != LY_ENOT) {
+            goto error;
+        }
+
+        /*
+         * bad-attribute
+         */
+        r = lydxml_envelope(xmlctx, "bad-attribute", "urn:ietf:params:xml:ns:netconf:base:1.0", 1, &child);
+        if (r == LY_SUCCESS) {
+            no_dup = 1;
+            goto check_child;
+        } else if (r != LY_ENOT) {
+            goto error;
+        }
+
+        /*
+         * bad-element
+         */
+        r = lydxml_envelope(xmlctx, "bad-element", "urn:ietf:params:xml:ns:netconf:base:1.0", 1, &child);
+        if (r == LY_SUCCESS) {
+            no_dup = 1;
+            goto check_child;
+        } else if (r != LY_ENOT) {
+            goto error;
+        }
+
+        /*
+         * bad-namespace
+         */
+        r = lydxml_envelope(xmlctx, "bad-namespace", "urn:ietf:params:xml:ns:netconf:base:1.0", 1, &child);
+        if (r == LY_SUCCESS) {
+            no_dup = 1;
+            goto check_child;
+        } else if (r != LY_ENOT) {
+            goto error;
+        }
+
+        if (r == LY_ENOT) {
+            assert(xmlctx->status == LYXML_ELEMENT);
+
+            /* custom elements, parse all the siblings */
+            while (xmlctx->status == LYXML_ELEMENT) {
+                LY_CHECK_GOTO(r = lydxml_opaq_r(xmlctx, parent), error);
+                LY_CHECK_GOTO(r = lyxml_ctx_next(xmlctx), error);
+            }
+            continue;
+        }
+
+check_child:
+        /* check for duplicates */
+        if (no_dup) {
+            LY_LIST_FOR(lyd_child(parent), iter) {
+                if ((((struct lyd_node_opaq *)iter)->name.name == ((struct lyd_node_opaq *)child)->name.name) &&
+                        (((struct lyd_node_opaq *)iter)->name.module_ns == ((struct lyd_node_opaq *)child)->name.module_ns)) {
+                    LOGVAL(xmlctx->ctx, LYVE_REFERENCE, "Duplicate element \"%s\" in \"error-info\".",
+                            ((struct lyd_node_opaq *)child)->name.name);
+                    r = LY_EVALID;
+                    goto error;
+                }
+            }
+        }
+
+        /* finish child parsing */
+        if (xmlctx->status != LYXML_ELEM_CLOSE) {
+            assert(xmlctx->status == LYXML_ELEMENT);
+            LOGVAL(xmlctx->ctx, LYVE_SYNTAX, "Unexpected child element \"%.*s\" of \"error-info\".",
+                    (int)xmlctx->name_len, xmlctx->name);
+            r = LY_EVALID;
+            goto error;
+        }
+        LY_CHECK_GOTO(r = lyxml_ctx_next(xmlctx), error);
+
+        /* insert */
+        lyd_insert_node(parent, NULL, child, 1);
+    }
+
+    return LY_SUCCESS;
+
+error:
+    lyd_free_tree(child);
+    return r;
+}
+
+/**
+ * @brief Parse all expected non-data XML elements of the rpc-error element in NETCONF rpc-reply message.
+ *
+ * @param[in] xmlctx XML parser context.
+ * @param[in] parent Parent to append nodes to.
+ * @return LY_ERR value.
+ */
+static LY_ERR
+lydxml_env_netconf_rpc_reply_error(struct lyxml_ctx *xmlctx, struct lyd_node *parent)
+{
+    LY_ERR r;
+    struct lyd_node *child, *iter;
+    const char *val;
+    ly_bool no_dup;
+
+    /* there must be some child */
+    if (xmlctx->status == LYXML_ELEM_CLOSE) {
+        LOGVAL(xmlctx->ctx, LYVE_SYNTAX, "Missing child elements of \"rpc-error\".");
+        return LY_EVALID;
+    }
+
+    while (xmlctx->status == LYXML_ELEMENT) {
+        child = NULL;
+
+        /*
+         * error-type
+         */
+        r = lydxml_envelope(xmlctx, "error-type", "urn:ietf:params:xml:ns:netconf:base:1.0", 1, &child);
+        if (r == LY_SUCCESS) {
+            val = ((struct lyd_node_opaq *)child)->value;
+            if (strcmp(val, "transport") && strcmp(val, "rpc") && strcmp(val, "protocol") && strcmp(val, "application")) {
+                LOGVAL(xmlctx->ctx, LYVE_REFERENCE, "Invalid value \"%s\" of element \"%s\".", val,
+                        ((struct lyd_node_opaq *)child)->name.name);
+                r = LY_EVALID;
+                goto error;
+            }
+
+            no_dup = 1;
+            goto check_child;
+        } else if (r != LY_ENOT) {
+            goto error;
+        }
+
+        /*
+         * error-tag
+         */
+        r = lydxml_envelope(xmlctx, "error-tag", "urn:ietf:params:xml:ns:netconf:base:1.0", 1, &child);
+        if (r == LY_SUCCESS) {
+            val = ((struct lyd_node_opaq *)child)->value;
+            if (strcmp(val, "in-use") && strcmp(val, "invalid-value") && strcmp(val, "too-big") &&
+                    strcmp(val, "missing-attribute") && strcmp(val, "bad-attribute") &&
+                    strcmp(val, "unknown-attribute") && strcmp(val, "missing-element") && strcmp(val, "bad-element") &&
+                    strcmp(val, "unknown-element") && strcmp(val, "unknown-namespace") && strcmp(val, "access-denied") &&
+                    strcmp(val, "lock-denied") && strcmp(val, "resource-denied") && strcmp(val, "rollback-failed") &&
+                    strcmp(val, "data-exists") && strcmp(val, "data-missing") && strcmp(val, "operation-not-supported") &&
+                    strcmp(val, "operation-failed") && strcmp(val, "malformed-message")) {
+                LOGVAL(xmlctx->ctx, LYVE_REFERENCE, "Invalid value \"%s\" of element \"%s\".", val,
+                        ((struct lyd_node_opaq *)child)->name.name);
+                r = LY_EVALID;
+                goto error;
+            }
+
+            no_dup = 1;
+            goto check_child;
+        } else if (r != LY_ENOT) {
+            goto error;
+        }
+
+        /*
+         * error-severity
+         */
+        r = lydxml_envelope(xmlctx, "error-severity", "urn:ietf:params:xml:ns:netconf:base:1.0", 1, &child);
+        if (r == LY_SUCCESS) {
+            val = ((struct lyd_node_opaq *)child)->value;
+            if (strcmp(val, "error") && strcmp(val, "warning")) {
+                LOGVAL(xmlctx->ctx, LYVE_REFERENCE, "Invalid value \"%s\" of element \"%s\".", val,
+                        ((struct lyd_node_opaq *)child)->name.name);
+                r = LY_EVALID;
+                goto error;
+            }
+
+            no_dup = 1;
+            goto check_child;
+        } else if (r != LY_ENOT) {
+            goto error;
+        }
+
+        /*
+         * error-app-tag
+         */
+        r = lydxml_envelope(xmlctx, "error-app-tag", "urn:ietf:params:xml:ns:netconf:base:1.0", 1, &child);
+        if (r == LY_SUCCESS) {
+            no_dup = 1;
+            goto check_child;
+        } else if (r != LY_ENOT) {
+            goto error;
+        }
+
+        /*
+         * error-path
+         */
+        r = lydxml_envelope(xmlctx, "error-path", "urn:ietf:params:xml:ns:netconf:base:1.0", 1, &child);
+        if (r == LY_SUCCESS) {
+            no_dup = 1;
+            goto check_child;
+        } else if (r != LY_ENOT) {
+            goto error;
+        }
+
+        /*
+         * error-message
+         */
+        r = lydxml_envelope(xmlctx, "error-message", "urn:ietf:params:xml:ns:netconf:base:1.0", 1, &child);
+        if (r == LY_SUCCESS) {
+            no_dup = 1;
+            goto check_child;
+        } else if (r != LY_ENOT) {
+            goto error;
+        }
+
+        /* error-info */
+        r = lydxml_envelope(xmlctx, "error-info", "urn:ietf:params:xml:ns:netconf:base:1.0", 0, &child);
+        if (r == LY_SUCCESS) {
+            /* parse all the descendants */
+            LY_CHECK_GOTO(r = lydxml_env_netconf_rpc_reply_error_info(xmlctx, child), error);
+
+            no_dup = 0;
+            goto check_child;
+        } else if (r != LY_ENOT) {
+            goto error;
+        }
+
+        if (r == LY_ENOT) {
+            assert(xmlctx->status == LYXML_ELEMENT);
+            LOGVAL(xmlctx->ctx, LYVE_SYNTAX, "Unexpected child element \"%.*s\" of \"rpc-error\".",
+                    (int)xmlctx->name_len, xmlctx->name);
+            r = LY_EVALID;
+            goto error;
+        }
+
+check_child:
+        /* check for duplicates */
+        if (no_dup) {
+            LY_LIST_FOR(lyd_child(parent), iter) {
+                if ((((struct lyd_node_opaq *)iter)->name.name == ((struct lyd_node_opaq *)child)->name.name) &&
+                        (((struct lyd_node_opaq *)iter)->name.module_ns == ((struct lyd_node_opaq *)child)->name.module_ns)) {
+                    LOGVAL(xmlctx->ctx, LYVE_REFERENCE, "Duplicate element \"%s\" in \"rpc-error\".",
+                            ((struct lyd_node_opaq *)child)->name.name);
+                    r = LY_EVALID;
+                    goto error;
+                }
+            }
+        }
+
+        /* finish child parsing */
+        if (xmlctx->status != LYXML_ELEM_CLOSE) {
+            assert(xmlctx->status == LYXML_ELEMENT);
+            LOGVAL(xmlctx->ctx, LYVE_SYNTAX, "Unexpected child element \"%.*s\" of \"rpc-error\".",
+                    (int)xmlctx->name_len, xmlctx->name);
+            r = LY_EVALID;
+            goto error;
+        }
+        LY_CHECK_GOTO(r = lyxml_ctx_next(xmlctx), error);
+
+        /* insert */
+        lyd_insert_node(parent, NULL, child, 1);
+    }
+
+    return LY_SUCCESS;
+
+error:
+    lyd_free_tree(child);
+    return r;
+}
+
+/**
+ * @brief Parse all expected non-data XML elements of a NETCONF rpc-reply message.
+ *
+ * @param[in] xmlctx XML parser context.
+ * @param[out] evnp Parsed envelope(s) (opaque node).
+ * @param[out] int_opts Internal options for parsing the rest of YANG data.
+ * @param[out] close_elem Number of parsed opened elements that need to be closed.
+ * @return LY_SUCCESS on success.
+ * @return LY_ERR value on error.
+ */
+static LY_ERR
+lydxml_env_netconf_reply(struct lyxml_ctx *xmlctx, struct lyd_node **envp, uint32_t *int_opts, uint32_t *close_elem)
+{
+    LY_ERR rc = LY_SUCCESS, r;
+    struct lyd_node *child = NULL;
+    const char *parsed_elem = NULL;
+
+    assert(envp && !*envp);
+
+    if (xmlctx->status != LYXML_ELEMENT) {
+        /* nothing to parse */
+        assert(xmlctx->status == LYXML_END);
+        goto cleanup;
+    }
+
+    /* parse "rpc-reply" */
+    r = lydxml_envelope(xmlctx, "rpc-reply", "urn:ietf:params:xml:ns:netconf:base:1.0", 0, envp);
+    LY_CHECK_ERR_GOTO(r, rc = r, cleanup);
+
+    /* there must be some child */
+    if (xmlctx->status == LYXML_ELEM_CLOSE) {
+        LOGVAL(xmlctx->ctx, LYVE_SYNTAX, "Missing child elements of \"rpc-reply\".");
+        rc = LY_EVALID;
+        goto cleanup;
+    }
+
+    /* try to parse "ok" */
+    r = lydxml_envelope(xmlctx, "ok", "urn:ietf:params:xml:ns:netconf:base:1.0", 0, &child);
+    if (r == LY_SUCCESS) {
+        /* insert */
+        lyd_insert_node(*envp, NULL, child, 1);
+
+        /* finish child parsing */
+        if (xmlctx->status != LYXML_ELEM_CLOSE) {
+            assert(xmlctx->status == LYXML_ELEMENT);
+            LOGVAL(xmlctx->ctx, LYVE_SYNTAX, "Unexpected child element \"%.*s\" of \"ok\".",
+                    (int)xmlctx->name_len, xmlctx->name);
+            rc = LY_EVALID;
+            goto cleanup;
+        }
+        LY_CHECK_GOTO(rc = lyxml_ctx_next(xmlctx), cleanup);
+
+        /* success */
+        parsed_elem = "ok";
+        goto finish;
+    } else if (r != LY_ENOT) {
+        rc = r;
+        goto cleanup;
+    }
+
+    /* try to parse all "rpc-error" elements */
+    while (xmlctx->status == LYXML_ELEMENT) {
+        r = lydxml_envelope(xmlctx, "rpc-error", "urn:ietf:params:xml:ns:netconf:base:1.0", 0, &child);
+        if (r == LY_ENOT) {
+            break;
+        } else if (r) {
+            rc = r;
+            goto cleanup;
+        }
+
+        /* insert */
+        lyd_insert_node(*envp, NULL, child, 1);
+
+        /* parse all children of "rpc-error" */
+        LY_CHECK_GOTO(rc = lydxml_env_netconf_rpc_reply_error(xmlctx, child), cleanup);
+
+        /* finish child parsing */
+        assert(xmlctx->status == LYXML_ELEM_CLOSE);
+        LY_CHECK_GOTO(rc = lyxml_ctx_next(xmlctx), cleanup);
+
+        parsed_elem = "rpc-error";
+    }
+
+finish:
+    if (parsed_elem) {
+        /* NETCONF rpc-reply with no data */
+        if (xmlctx->status != LYXML_ELEM_CLOSE) {
+            assert(xmlctx->status == LYXML_ELEMENT);
+            LOGVAL(xmlctx->ctx, LYVE_SYNTAX, "Unexpected sibling element \"%.*s\" of \"%s\".",
+                    (int)xmlctx->name_len, xmlctx->name, parsed_elem);
+            rc = LY_EVALID;
+            goto cleanup;
+        }
+    }
+
+    /* NETCONF rpc-reply */
+    *int_opts = LYD_INTOPT_WITH_SIBLINGS | LYD_INTOPT_REPLY;
+    *close_elem = 1;
+
+cleanup:
+    if (rc) {
+        lyd_free_tree(*envp);
+        *envp = NULL;
+    }
+    return rc;
+}
+
+LY_ERR
+lyd_parse_xml_netconf(const struct ly_ctx *ctx, const struct lysc_ext_instance *ext, struct lyd_node *parent,
+        struct lyd_node **first_p, struct ly_in *in, uint32_t parse_opts, uint32_t val_opts, enum lyd_type data_type,
+        struct lyd_node **envp, struct ly_set *parsed, struct lyd_ctx **lydctx_p)
+{
+    LY_ERR rc = LY_SUCCESS;
+    struct lyd_xml_ctx *lydctx;
+    uint32_t i, int_opts = 0, close_elem = 0;
+    ly_bool parsed_data_nodes = 0;
+
+    assert(ctx && in && lydctx_p);
+    assert(!(parse_opts & ~LYD_PARSE_OPTS_MASK));
+    assert(!(val_opts & ~LYD_VALIDATE_OPTS_MASK));
+
+    assert((data_type == LYD_TYPE_RPC_NETCONF) || (data_type == LYD_TYPE_NOTIF_NETCONF) ||
+            (data_type == LYD_TYPE_REPLY_NETCONF));
+    assert(!(parse_opts & LYD_PARSE_SUBTREE));
+
+    /* init context */
+    lydctx = calloc(1, sizeof *lydctx);
+    LY_CHECK_ERR_RET(!lydctx, LOGMEM(ctx), LY_EMEM);
+    LY_CHECK_GOTO(rc = lyxml_ctx_new(ctx, in, &lydctx->xmlctx), cleanup);
+    lydctx->parse_opts = parse_opts;
+    lydctx->val_opts = val_opts;
+    lydctx->free = lyd_xml_ctx_free;
+    lydctx->ext = ext;
+
+    switch (data_type) {
+    case LYD_TYPE_RPC_NETCONF:
+        assert(!parent);
+        rc = lydxml_env_netconf_rpc(lydctx->xmlctx, envp, &int_opts, &close_elem);
+        if (rc == LY_ENOT) {
+            LOGVAL(ctx, LYVE_DATA, "Missing NETCONF <rpc> envelope or in incorrect namespace.");
+        }
+        LY_CHECK_GOTO(rc, cleanup);
+        break;
+    case LYD_TYPE_NOTIF_NETCONF:
+        assert(!parent);
+        rc = lydxml_env_netconf_notif(lydctx->xmlctx, envp, &int_opts, &close_elem);
+        if (rc == LY_ENOT) {
+            LOGVAL(ctx, LYVE_DATA, "Missing NETCONF <notification> envelope or in incorrect namespace.");
+        }
+        LY_CHECK_GOTO(rc, cleanup);
+        break;
+    case LYD_TYPE_REPLY_NETCONF:
+        assert(parent);
+        rc = lydxml_env_netconf_reply(lydctx->xmlctx, envp, &int_opts, &close_elem);
+        if (rc == LY_ENOT) {
+            LOGVAL(ctx, LYVE_DATA, "Missing NETCONF <rpc-reply> envelope or in incorrect namespace.");
+        }
+        LY_CHECK_GOTO(rc, cleanup);
+        break;
+    default:
+        LOGINT(ctx);
+        rc = LY_EINT;
+        goto cleanup;
+    }
+
+    lydctx->int_opts = int_opts;
+
+    /* find the operation node if it exists already */
+    LY_CHECK_GOTO(rc = lyd_parser_find_operation(parent, int_opts, &lydctx->op_node), cleanup);
+
+    /* parse XML data */
+    while (lydctx->xmlctx->status == LYXML_ELEMENT) {
+        LY_CHECK_GOTO(rc = lydxml_subtree_r(lydctx, parent, first_p, parsed), cleanup);
+        parsed_data_nodes = 1;
+
+        if (!(int_opts & LYD_INTOPT_WITH_SIBLINGS)) {
+            break;
+        }
+    }
+
+    /* close all opened elements */
+    for (i = 0; i < close_elem; ++i) {
+        if (lydctx->xmlctx->status != LYXML_ELEM_CLOSE) {
+            assert(lydctx->xmlctx->status == LYXML_ELEMENT);
+            LOGVAL(lydctx->xmlctx->ctx, LYVE_SYNTAX, "Unexpected child element \"%.*s\".",
+                    (int)lydctx->xmlctx->name_len, lydctx->xmlctx->name);
+            rc = LY_EVALID;
+            goto cleanup;
+        }
+
+        LY_CHECK_GOTO(rc = lyxml_ctx_next(lydctx->xmlctx), cleanup);
+    }
+
+    /* check final state */
+    if ((int_opts & LYD_INTOPT_NO_SIBLINGS) && (lydctx->xmlctx->status == LYXML_ELEMENT)) {
+        LOGVAL(ctx, LYVE_SYNTAX, "Unexpected sibling node.");
+        rc = LY_EVALID;
+        goto cleanup;
+    }
+    if ((int_opts & (LYD_INTOPT_RPC | LYD_INTOPT_ACTION | LYD_INTOPT_NOTIF | LYD_INTOPT_REPLY)) && !lydctx->op_node) {
+        LOGVAL(ctx, LYVE_DATA, "Missing the operation node.");
+        rc = LY_EVALID;
+        goto cleanup;
+    }
+
+    if (!parsed_data_nodes) {
+        /* no data nodes were parsed */
+        lydctx->op_node = NULL;
+    }
+
+cleanup:
+    /* there should be no unres stored if validation should be skipped */
+    assert(!(parse_opts & LYD_PARSE_ONLY) || (!lydctx->node_types.count && !lydctx->meta_types.count &&
+            !lydctx->node_when.count));
+
+    if (rc) {
+        lyd_xml_ctx_free((struct lyd_ctx *)lydctx);
+    } else {
+        *lydctx_p = (struct lyd_ctx *)lydctx;
+
+        /* the XML context is no more needed, freeing it also stops logging line numbers which would be confusing now */
+        lyxml_ctx_free(lydctx->xmlctx);
+        lydctx->xmlctx = NULL;
+    }
+    return rc;
+}