diff options
Diffstat (limited to 'src/parser_xml.c')
| -rw-r--r-- | src/parser_xml.c | 2025 |
1 files changed, 2025 insertions, 0 deletions
diff --git a/src/parser_xml.c b/src/parser_xml.c new file mode 100644 index 0000000..0db10ca --- /dev/null +++ b/src/parser_xml.c @@ -0,0 +1,2025 @@ +/** + * @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 "compat.h" +#include "context.h" +#include "dict.h" +#include "in_internal.h" +#include "log.h" +#include "ly_common.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" + +static LY_ERR lydxml_subtree_r(struct lyd_xml_ctx *lydctx, struct lyd_node *parent, struct lyd_node **first_p, + struct ly_set *parsed); + +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; + + LOG_LOCSET(sparent, 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: + LOG_LOCBACK(1, 0); + 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 = ly_value_validate(NULL, snode, xmlctx->value, xmlctx->value_len, LY_VALUE_XML, &xmlctx->ns, LYD_HINT_DATA); + 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 (ly_value_validate(NULL, *snode, xmlctx->value, xmlctx->value_len, LY_VALUE_XML, &xmlctx->ns, LYD_HINT_DATA)) { + LOGVRB("Parsing opaque term node \"%s\" with invalid value \"%.*s\".", (*snode)->name, (int)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, const 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 but it may also be zero-length string */ + *hints |= LYD_VALHINT_EMPTY | LYD_VALHINT_STRING; + } 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 > (long)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 && opaq->name.module_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 = (struct lyd_node *)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_get_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) { + if (ns) { + LOGVAL(ctx, LYVE_REFERENCE, "No module with namespace \"%s\" in the context.", ns->uri); + } else if (prefix_len) { + LOGVAL(ctx, LYVE_REFERENCE, "No module with namespace \"%.*s\" in the context.", (int)prefix_len, prefix); + } else { + LOGVAL(ctx, LYVE_REFERENCE, "No default namespace in the context."); + } + return LY_EVALID; + } + return LY_SUCCESS; + } + + /* get the schema node */ + if (!parent && lydctx->ext) { + *snode = lysc_ext_find_node(lydctx->ext, mod, name, name_len, 0, getnext_opts); + } else { + /* try to find parent schema node even if it is an opaque node (not connected to the parent) */ + *snode = lys_find_child(lyd_parser_node_schema(parent), 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 an XML opque node. + * + * @param[in] lydctx XML YANG data parser context. + * @param[in] sibling Existing sibling node, if any. + * @param[in] prefix Parsed node prefix. + * @param[in] prefix_len Length of @p prefix. + * @param[in] name Parsed node name. + * @param[in] name_len Length of @p name. + * @param[out] insert_anchor Optional anchor node for inserting this node. + * @param[out] node Created node. + * @return LY_ERR value. + */ +static LY_ERR +lydxml_subtree_opaq(struct lyd_xml_ctx *lydctx, const struct lyd_node *sibling, const char *prefix, uint32_t prefix_len, + const char *name, uint32_t name_len, struct lyd_node **insert_anchor, struct lyd_node **node) +{ + LY_ERR rc = LY_SUCCESS; + struct lyxml_ctx *xmlctx = lydctx->xmlctx; + struct lyd_node_opaq *opaq; + const char *ns_uri, *value = NULL; + size_t value_len; + ly_bool ws_only, dynamic = 0; + const struct lyxml_ns *ns; + uint32_t hints; + void *val_prefix_data = NULL; + LY_VALUE_FORMAT format; + + assert(lydctx->parse_opts & LYD_PARSE_OPAQ); + + *node = NULL; + + /* remember the value */ + value = xmlctx->value; + value_len = xmlctx->value_len; + ws_only = xmlctx->ws_only; + dynamic = xmlctx->dynamic; + if (dynamic) { + xmlctx->dynamic = 0; + } + + /* get value prefixes, if any */ + rc = ly_store_prefix_data(xmlctx->ctx, value, value_len, LY_VALUE_XML, &xmlctx->ns, &format, &val_prefix_data); + LY_CHECK_GOTO(rc, cleanup); + + /* 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, sibling, ns_uri, &hints, insert_anchor); + + /* create the node without value */ + rc = lyd_create_opaq(xmlctx->ctx, name, name_len, prefix, prefix_len, ns_uri, ns_uri ? strlen(ns_uri) : 0, NULL, 0, + NULL, format, NULL, hints, node); + LY_CHECK_GOTO(rc, cleanup); + + assert(*node); + LOG_LOCSET(NULL, *node); + + /* parser next */ + rc = lyxml_ctx_next(xmlctx); + LY_CHECK_GOTO(rc, cleanup); + + /* process children */ + while (xmlctx->status == LYXML_ELEMENT) { + rc = lydxml_subtree_r(lydctx, *node, lyd_node_child_p(*node), NULL); + LY_CHECK_GOTO(rc, cleanup); + } + + /* update the value */ + opaq = (struct lyd_node_opaq *)*node; + if (opaq->child) { + if (!ws_only) { + LOGVAL(xmlctx->ctx, LYVE_SYNTAX_XML, "Mixed XML content node \"%s\" found, not supported.", LYD_NAME(opaq)); + rc = LY_EVALID; + goto cleanup; + } + } else if (value_len) { + lydict_remove(xmlctx->ctx, opaq->value); + if (dynamic) { + LY_CHECK_GOTO(rc = lydict_insert_zc(xmlctx->ctx, (char *)value, &opaq->value), cleanup); + dynamic = 0; + } else { + LY_CHECK_GOTO(rc = lydict_insert(xmlctx->ctx, value, value_len, &opaq->value), cleanup); + } + } + + /* always store val_prefix_data because the format requires them */ + assert(!opaq->val_prefix_data); + opaq->val_prefix_data = val_prefix_data; + val_prefix_data = NULL; + +cleanup: + if (*node) { + LOG_LOCBACK(0, 1); + } + ly_free_prefix_data(format, val_prefix_data); + if (dynamic) { + free((char *)value); + } + if (rc) { + lyd_free_tree(*node); + *node = NULL; + } + return rc; +} + +/** + * @brief Parse an XML leaf/leaf-list node. + * + * @param[in] lydctx XML YANG data parser context. + * @param[in] parent Parent node, if any. + * @param[in] snode Schema node of the new node. + * @param[out] node Created node. + * @return LY_ERR value. + */ +static LY_ERR +lydxml_subtree_term(struct lyd_xml_ctx *lydctx, struct lyd_node *parent, const struct lysc_node *snode, + struct lyd_node **node) +{ + LY_ERR r, rc = LY_SUCCESS; + struct lyxml_ctx *xmlctx = lydctx->xmlctx; + struct lyd_node *anchor; + + *node = NULL; + + /* create node */ + r = 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); + LY_DPARSER_ERR_GOTO(r, rc = r, lydctx, cleanup); + + if (*node) { + LOG_LOCSET(NULL, *node); + } + + if (*node && parent && (snode->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(xmlctx->ctx, LYVE_DATA, "Invalid position of the key \"%s\" in a list.", snode->name); + r = LY_EVALID; + LY_DPARSER_ERR_GOTO(r, rc = r, lydctx, cleanup); + } else { + LOGWRN(xmlctx->ctx, "Invalid position of the key \"%s\" in a list.", snode->name); + } + } + } + + /* parser next */ + r = lyxml_ctx_next(xmlctx); + LY_CHECK_ERR_GOTO(r, rc = r, cleanup); + + /* no children expected */ + if (xmlctx->status == LYXML_ELEMENT) { + LOGVAL(xmlctx->ctx, LYVE_SYNTAX, "Child element \"%.*s\" inside a terminal node \"%s\" found.", + (int)xmlctx->name_len, xmlctx->name, snode->name); + r = LY_EVALID; + LY_DPARSER_ERR_GOTO(r, rc = r, lydctx, cleanup); + } + +cleanup: + if (*node) { + LOG_LOCBACK(0, 1); + } + if (rc && (!(lydctx->val_opts & LYD_VALIDATE_MULTI_ERROR) || (rc != LY_EVALID))) { + lyd_free_tree(*node); + *node = NULL; + } + return rc; +} + +/** + * @brief Parse an XML inner node. + * + * @param[in] lydctx XML YANG data parser context. + * @param[in] snode Schema node of the new node. + * @param[in] ext Extension instance of @p snode, if any. + * @param[out] node Created node. + * @return LY_ERR value. + */ +static LY_ERR +lydxml_subtree_inner(struct lyd_xml_ctx *lydctx, const struct lysc_node *snode, const struct lysc_ext_instance *ext, + struct lyd_node **node) +{ + LY_ERR r, rc = LY_SUCCESS; + struct lyxml_ctx *xmlctx = lydctx->xmlctx; + uint32_t prev_parse_opts = lydctx->parse_opts; + + *node = NULL; + + if (!xmlctx->ws_only) { + /* value in inner node */ + LOGVAL(xmlctx->ctx, LYVE_SYNTAX, "Text value \"%.*s\" inside an inner node \"%s\" found.", + (int)xmlctx->value_len, xmlctx->value, snode->name); + r = LY_EVALID; + LY_DPARSER_ERR_GOTO(r, rc = r, lydctx, cleanup); + } + + /* create node */ + rc = lyd_create_inner(snode, node); + LY_CHECK_GOTO(rc, cleanup); + + assert(*node); + LOG_LOCSET(NULL, *node); + + /* parser next */ + rc = lyxml_ctx_next(xmlctx); + LY_CHECK_GOTO(rc, cleanup); + + if (ext) { + /* only parse these extension data and validate afterwards */ + lydctx->parse_opts |= LYD_PARSE_ONLY; + } + + /* process children */ + while (xmlctx->status == LYXML_ELEMENT) { + r = lydxml_subtree_r(lydctx, *node, lyd_node_child_p(*node), NULL); + LY_DPARSER_ERR_GOTO(r, rc = r, lydctx, cleanup); + } + + /* restore options */ + lydctx->parse_opts = prev_parse_opts; + + if (snode->nodetype == LYS_LIST) { + /* check all keys exist */ + r = lyd_parse_check_keys(*node); + LY_CHECK_ERR_GOTO(r, rc = r, cleanup); + } + + if (!(lydctx->parse_opts & LYD_PARSE_ONLY) && !rc) { + /* new node validation, autodelete CANNOT occur (it can if multi-error), all nodes are new */ + r = lyd_validate_new(lyd_node_child_p(*node), snode, NULL, lydctx->val_opts, NULL); + LY_DPARSER_ERR_GOTO(r, rc = r, lydctx, cleanup); + + /* add any missing default children */ + r = 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_ERR_GOTO(r, rc = r, cleanup); + } + + if (snode->nodetype & (LYS_RPC | LYS_ACTION | LYS_NOTIF)) { + /* rememeber the RPC/action/notification */ + lydctx->op_node = *node; + } + +cleanup: + if (*node) { + LOG_LOCBACK(0, 1); + } + lydctx->parse_opts = prev_parse_opts; + if (rc && ((*node && !(*node)->hash) || !(lydctx->val_opts & LYD_VALIDATE_MULTI_ERROR) || (rc != LY_EVALID))) { + /* list without keys is unusable or an error */ + lyd_free_tree(*node); + *node = NULL; + } + return rc; +} + +/** + * @brief Parse an XML anyxml/anydata node. + * + * @param[in] lydctx XML YANG data parser context. + * @param[in] snode Schema node of the new node. + * @param[in] ext Extension instance of @p snode, if any. + * @param[out] node Created node. + * @return LY_ERR value. + */ +static LY_ERR +lydxml_subtree_any(struct lyd_xml_ctx *lydctx, const struct lysc_node *snode, const struct lysc_ext_instance *ext, + struct lyd_node **node) +{ + LY_ERR r, rc = LY_SUCCESS; + struct lyxml_ctx *xmlctx = lydctx->xmlctx; + uint32_t prev_parse_opts = lydctx->parse_opts, prev_int_opts = lydctx->int_opts; + struct lyd_node *child = NULL; + char *val = NULL; + ly_bool log_node = 0; + + *node = NULL; + + if ((snode->nodetype == LYS_ANYDATA) && !xmlctx->ws_only) { + /* value in anydata node, we expect a tree */ + LOGVAL(xmlctx->ctx, LYVE_SYNTAX, "Text value \"%.*s\" inside an anydata node \"%s\" found.", + xmlctx->value_len < 20 ? (int)xmlctx->value_len : 20, xmlctx->value, snode->name); + r = LY_EVALID; + LY_DPARSER_ERR_GOTO(r, rc = r, lydctx, cleanup); + } + + 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); rc = LY_EMEM, cleanup); + + /* parser next */ + r = lyxml_ctx_next(xmlctx); + LY_CHECK_ERR_GOTO(r, rc = r, cleanup); + + /* create node */ + r = lyd_create_any(snode, val, LYD_ANYDATA_STRING, 1, node); + LY_CHECK_ERR_GOTO(r, rc = r, cleanup); + val = NULL; + } else { + /* create node */ + r = lyd_create_any(snode, NULL, LYD_ANYDATA_DATATREE, 1, node); + LY_CHECK_ERR_GOTO(r, rc = r, cleanup); + + assert(*node); + LOG_LOCSET(NULL, *node); + log_node = 1; + + /* parser next */ + r = lyxml_ctx_next(xmlctx); + LY_CHECK_ERR_GOTO(r, rc = r, cleanup); + + /* update options so that generic data can be parsed */ + lydctx->parse_opts &= ~LYD_PARSE_STRICT; + lydctx->parse_opts |= LYD_PARSE_OPAQ | (ext ? LYD_PARSE_ONLY : 0); + lydctx->int_opts |= LYD_INTOPT_ANY | LYD_INTOPT_WITH_SIBLINGS; + + /* parse any data tree */ + while (xmlctx->status == LYXML_ELEMENT) { + r = lydxml_subtree_r(lydctx, NULL, &child, NULL); + LY_DPARSER_ERR_GOTO(r, rc = r, lydctx, cleanup); + } + + /* assign the data tree */ + ((struct lyd_node_any *)*node)->value.tree = child; + child = NULL; + } + +cleanup: + if (log_node) { + LOG_LOCBACK(0, 1); + } + lydctx->parse_opts = prev_parse_opts; + lydctx->int_opts = prev_int_opts; + free(val); + lyd_free_tree(child); + if (rc && (!(lydctx->val_opts & LYD_VALIDATE_MULTI_ERROR) || (rc != LY_EVALID))) { + lyd_free_tree(*node); + *node = NULL; + } + return rc; +} + +/** + * @brief Parse an XML subtree, recursively. + * + * @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. + * @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 r, rc = LY_SUCCESS; + const char *prefix, *name; + size_t prefix_len, name_len; + struct lyxml_ctx *xmlctx; + const struct ly_ctx *ctx; + struct lyd_meta *meta = NULL; + struct lyd_attr *attr = NULL; + const struct lysc_node *snode = NULL; + struct lysc_ext_instance *ext = NULL; + uint32_t orig_parse_opts; + struct lyd_node *node = NULL, *insert_anchor = NULL; + ly_bool parse_subtree; + + 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 */ + rc = lyxml_ctx_next(xmlctx); + LY_CHECK_GOTO(rc, cleanup); + + if ((lydctx->int_opts & LYD_INTOPT_EVENTTIME) && !parent && name_len && !prefix_len && + !ly_strncmp("eventTime", name, name_len)) { + /* parse eventTime, create node */ + assert(xmlctx->status == LYXML_ELEM_CONTENT); + rc = lyd_create_opaq(xmlctx->ctx, name, name_len, prefix, prefix_len, + "urn:ietf:params:xml:ns:netconf:notification:1.0", 47, xmlctx->value, + xmlctx->ws_only ? 0 : xmlctx->value_len, NULL, LY_VALUE_XML, NULL, LYD_HINT_DATA, &node); + LY_CHECK_GOTO(rc, cleanup); + + /* validate the value */ + r = lyd_parser_notif_eventtime_validate(node); + LY_CHECK_ERR_GOTO(r, rc = r; lyd_free_tree(node), cleanup); + + /* parser next */ + r = lyxml_ctx_next(xmlctx); + LY_CHECK_ERR_GOTO(r, rc = r; lyd_free_tree(node), cleanup); + if (xmlctx->status != LYXML_ELEM_CLOSE) { + LOGVAL(ctx, LYVE_DATA, "Unexpected notification \"eventTime\" node children."); + rc = LY_EVALID; + lyd_free_tree(node); + goto cleanup; + } + + goto node_parsed; + } + + /* get the schema node */ + r = lydxml_subtree_get_snode(lydctx, parent, prefix, prefix_len, name, name_len, &snode, &ext); + if (r) { + rc = r; + if ((r == LY_EVALID) && (lydctx->val_opts & LYD_VALIDATE_MULTI_ERROR)) { + /* skip the invalid data */ + if ((r = lydxml_data_skip(xmlctx))) { + rc = r; + } + } + goto cleanup; + } else if (!snode && !(lydctx->parse_opts & LYD_PARSE_OPAQ)) { + LOGVRB("Skipping parsing of unknown node \"%.*s\".", (int)name_len, name); + + /* skip element with children */ + rc = lydxml_data_skip(xmlctx); + goto cleanup; + } + + /* create metadata/attributes */ + if (xmlctx->status == LYXML_ATTRIBUTE) { + if (snode) { + rc = lydxml_metadata(lydctx, snode, &meta); + LY_CHECK_GOTO(rc, cleanup); + } else { + assert(lydctx->parse_opts & LYD_PARSE_OPAQ); + rc = lydxml_attrs(xmlctx, &attr); + LY_CHECK_GOTO(rc, cleanup); + } + } + + assert(xmlctx->status == LYXML_ELEM_CONTENT); + if (!snode) { + /* opaque */ + r = lydxml_subtree_opaq(lydctx, parent ? lyd_child(parent) : *first_p, prefix, prefix_len, name, name_len, + &insert_anchor, &node); + } else if (snode->nodetype & LYD_NODE_TERM) { + /* term */ + r = lydxml_subtree_term(lydctx, parent, snode, &node); + } else if (snode->nodetype & LYD_NODE_INNER) { + /* inner */ + r = lydxml_subtree_inner(lydctx, snode, ext, &node); + } else { + /* any */ + assert(snode->nodetype & LYD_NODE_ANY); + r = lydxml_subtree_any(lydctx, snode, ext, &node); + } + LY_DPARSER_ERR_GOTO(r, rc = r, lydctx, cleanup); + +node_parsed: + if (node && snode) { + /* add/correct flags */ + r = lyd_parse_set_data_flags(node, &meta, (struct lyd_ctx *)lydctx, ext); + LY_CHECK_ERR_GOTO(r, rc = r; lyd_free_tree(node), cleanup); + + if (!(lydctx->parse_opts & LYD_PARSE_ONLY)) { + /* store for ext instance node validation, if needed */ + r = lyd_validate_node_ext(node, &lydctx->ext_node); + LY_DPARSER_ERR_GOTO(r, rc = r, lydctx, cleanup); + } + } + + /* parser next */ + assert(xmlctx->status == LYXML_ELEM_CLOSE); + if (!parse_subtree) { + r = lyxml_ctx_next(xmlctx); + LY_CHECK_ERR_GOTO(r, rc = r; lyd_free_tree(node), cleanup); + } + + LY_CHECK_GOTO(!node, cleanup); + + /* add metadata/attributes */ + if (snode) { + lyd_insert_meta(node, meta, 0); + meta = NULL; + } else { + lyd_insert_attr(node, attr); + attr = NULL; + } + + /* insert, keep first pointer correct */ + if (insert_anchor) { + lyd_insert_after(insert_anchor, node); + } else if (ext) { + r = lyplg_ext_insert(parent, node); + LY_CHECK_ERR_GOTO(r, rc = r; lyd_free_tree(node), cleanup); + } else { + lyd_insert_node(parent, first_p, node, + lydctx->parse_opts & LYD_PARSE_ORDERED ? LYD_INSERT_NODE_LAST : LYD_INSERT_NODE_DEFAULT); + } + 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); + } + +cleanup: + lydctx->parse_opts = orig_parse_opts; + lyd_free_meta_siblings(meta); + lyd_free_attr_siblings(ctx, attr); + return rc; +} + +/** + * @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; + + if (xmlctx->status != LYXML_ELEMENT) { + /* nothing to parse */ + return LY_ENOT; + } + + 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 r, rc = LY_SUCCESS; + struct lyd_xml_ctx *lydctx; + ly_bool parsed_data_nodes = 0, close_elem = 0; + struct lyd_node *act = NULL; + 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); + + if ((int_opts & LYD_INTOPT_RPC) && (int_opts & LYD_INTOPT_ACTION)) { + /* can be either, try to parse "action" */ + if (!lydxml_envelope(lydctx->xmlctx, "action", "urn:ietf:params:xml:ns:yang:1", 0, &act)) { + close_elem = 1; + int_opts &= ~LYD_INTOPT_RPC; + } + } + + /* parse XML data */ + while (lydctx->xmlctx->status == LYXML_ELEMENT) { + r = lydxml_subtree_r(lydctx, parent, first_p, parsed); + LY_DPARSER_ERR_GOTO(r, rc = r, lydctx, cleanup); + + parsed_data_nodes = 1; + + if (!(int_opts & LYD_INTOPT_WITH_SIBLINGS)) { + break; + } + } + + /* close an opened element */ + if (close_elem) { + 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."); + r = LY_EVALID; + LY_DPARSER_ERR_GOTO(r, rc = r, lydctx, 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."); + r = LY_EVALID; + LY_DPARSER_ERR_GOTO(r, rc = r, lydctx, 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)); + + lyd_free_tree(act); + if (rc && (!(lydctx->val_opts & LYD_VALIDATE_MULTI_ERROR) || (rc != LY_EVALID))) { + 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); + + /* 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, LYD_INSERT_NODE_DEFAULT); + + /* 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 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 *node = NULL; + struct lyd_node_opaq *opaq; + const char *name, *prefix, *value = NULL; + size_t name_len, prefix_len, value_len; + ly_bool ws_only, dynamic = 0; + + 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)); + } + + /* remember the value */ + assert(xmlctx->status == LYXML_ELEM_CONTENT); + value = xmlctx->value; + value_len = xmlctx->value_len; + ws_only = xmlctx->ws_only; + dynamic = xmlctx->dynamic; + if (dynamic) { + xmlctx->dynamic = 0; + } + + /* create the node without value */ + rc = lyd_create_opaq(xmlctx->ctx, name, name_len, prefix, prefix_len, ns->uri, strlen(ns->uri), NULL, 0, NULL, + LY_VALUE_XML, NULL, 0, &node); + LY_CHECK_GOTO(rc, cleanup); + + /* assign atributes */ + ((struct lyd_node_opaq *)node)->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, node); + LY_CHECK_GOTO(rc, cleanup); + } + + /* insert */ + lyd_insert_node(parent, NULL, node, LYD_INSERT_NODE_LAST); + + /* update the value */ + opaq = (struct lyd_node_opaq *)node; + if (opaq->child) { + if (!ws_only) { + LOGVAL(xmlctx->ctx, LYVE_SYNTAX_XML, "Mixed XML content node \"%s\" found, not supported.", LYD_NAME(node)); + rc = LY_EVALID; + goto cleanup; + } + } else if (value_len) { + lydict_remove(xmlctx->ctx, opaq->value); + if (dynamic) { + LY_CHECK_GOTO(rc = lydict_insert_zc(xmlctx->ctx, (char *)value, &opaq->value), cleanup); + dynamic = 0; + } else { + LY_CHECK_GOTO(rc = lydict_insert(xmlctx->ctx, value, value_len, &opaq->value), cleanup); + } + } + +cleanup: + lyd_free_attr_siblings(xmlctx->ctx, attr); + if (dynamic) { + free((char *)value); + } + if (rc) { + lyd_free_tree(node); + } + 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, LYD_INSERT_NODE_LAST); + } + + 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, LYD_INSERT_NODE_LAST); + } + + 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); + + /* 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, LYD_INSERT_NODE_LAST); + + /* 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, LYD_INSERT_NODE_LAST); + + /* 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; + struct lyd_node *node; + 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(!(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); + + /* parse "notification" */ + rc = lydxml_envelope(lydctx->xmlctx, "notification", "urn:ietf:params:xml:ns:netconf:notification:1.0", 0, envp); + if (rc == LY_ENOT) { + LOGVAL(ctx, LYVE_DATA, "Missing NETCONF <notification> envelope or in incorrect namespace."); + } + LY_CHECK_GOTO(rc, cleanup); + + /* NETCONF notification */ + int_opts = LYD_INTOPT_WITH_SIBLINGS | LYD_INTOPT_NOTIF | LYD_INTOPT_EVENTTIME; + close_elem = 1; + 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; + case LYD_TYPE_RPC_RESTCONF: + assert(parent); + + /* parse "input" */ + rc = lydxml_envelope(lydctx->xmlctx, "input", lyd_node_module(parent)->ns, 0, envp); + if (rc == LY_ENOT) { + LOGVAL(ctx, LYVE_DATA, "Missing RESTCONF \"input\" object or in incorrect namespace."); + } + LY_CHECK_GOTO(rc, cleanup); + + int_opts = LYD_INTOPT_WITH_SIBLINGS | LYD_INTOPT_RPC | LYD_INTOPT_ACTION; + close_elem = 1; + break; + case LYD_TYPE_REPLY_RESTCONF: + assert(parent); + + /* parse "output" */ + rc = lydxml_envelope(lydctx->xmlctx, "output", lyd_node_module(parent)->ns, 0, envp); + if (rc == LY_ENOT) { + LOGVAL(ctx, LYVE_DATA, "Missing RESTCONF \"output\" object or in incorrect namespace."); + } + LY_CHECK_GOTO(rc, cleanup); + + int_opts = LYD_INTOPT_WITH_SIBLINGS | LYD_INTOPT_REPLY; + close_elem = 1; + 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 (int_opts & LYD_INTOPT_EVENTTIME) { + /* parse as a child of the envelope */ + node = (*first_p)->prev; + if (node->schema) { + LOGVAL(ctx, LYVE_DATA, "Missing notification \"eventTime\" node."); + rc = LY_EVALID; + goto cleanup; + } else { + /* can be the only opaque node and an operation had to be parsed */ + assert(!strcmp(LYD_NAME(node), "eventTime") && (*first_p)->next); + lyd_unlink(node); + assert(*envp); + lyd_insert_child(*envp, node); + } + } + + 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; +} |