| /** |
| * @file parser_json.c |
| * @author Radek Krejci <rkrejci@cesnet.cz> |
| * @author Michal Vasko <mvasko@cesnet.cz> |
| * @brief JSON data parser for libyang |
| * |
| * Copyright (c) 2020 - 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 "json.h" |
| #include "log.h" |
| #include "parser_data.h" |
| #include "parser_internal.h" |
| #include "plugins_exts.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" |
| |
| /** |
| * @brief Free the JSON data parser context. |
| * |
| * JSON implementation of lyd_ctx_free_clb(). |
| */ |
| static void |
| lyd_json_ctx_free(struct lyd_ctx *lydctx) |
| { |
| struct lyd_json_ctx *ctx = (struct lyd_json_ctx *)lydctx; |
| |
| if (lydctx) { |
| lyd_ctx_free(lydctx); |
| lyjson_ctx_free(ctx->jsonctx); |
| free(ctx); |
| } |
| } |
| |
| /** |
| * @brief Pass the responsibility for releasing the dynamic values to @p dst. |
| * |
| * @param[in] jsonctx JSON context which contains the dynamic value. |
| * @param[in,out] dst Pointer to which the responsibility will be submited. |
| * If the pointer is already pointing to some allocated memory, it is released beforehand. |
| */ |
| static void |
| lyjson_ctx_give_dynamic_value(struct lyjson_ctx *jsonctx, char **dst) |
| { |
| assert(jsonctx && dst); |
| |
| if (!jsonctx->dynamic) { |
| return; |
| } |
| |
| if (dst) { |
| free(*dst); |
| } |
| *dst = NULL; |
| |
| /* give the dynamic value */ |
| *dst = (char *)jsonctx->value; |
| |
| /* responsibility for the release is now passed to dst */ |
| jsonctx->dynamic = 0; |
| } |
| |
| /** |
| * @brief Parse JSON member-name as [\@][prefix:][name] |
| * |
| * \@ - metadata flag, maps to 1 in @p is_meta_p |
| * prefix - name of the module of the data node |
| * name - name of the data node |
| * |
| * All the output parameter are mandatory. Function only parse the member-name, all the appropriate checks are up to the caller. |
| * |
| * @param[in] value String to parse |
| * @param[in] value_len Length of the @p str. |
| * @param[out] name_p Pointer to the beginning of the parsed name. |
| * @param[out] name_len_p Pointer to the length of the parsed name. |
| * @param[out] prefix_p Pointer to the beginning of the parsed prefix. If the member-name does not contain prefix, result is NULL. |
| * @param[out] prefix_len_p Pointer to the length of the parsed prefix. If the member-name does not contain prefix, result is 0. |
| * @param[out] is_meta_p Pointer to the metadata flag, set to 1 if the member-name contains \@, 0 otherwise. |
| */ |
| static void |
| lydjson_parse_name(const char *value, size_t value_len, const char **name_p, size_t *name_len_p, const char **prefix_p, |
| size_t *prefix_len_p, ly_bool *is_meta_p) |
| { |
| const char *name, *prefix = NULL; |
| size_t name_len, prefix_len = 0; |
| ly_bool is_meta = 0; |
| |
| name = memchr(value, ':', value_len); |
| if (name != NULL) { |
| prefix = value; |
| if (*prefix == '@') { |
| is_meta = 1; |
| prefix++; |
| } |
| prefix_len = name - prefix; |
| name++; |
| name_len = value_len - (prefix_len + 1) - is_meta; |
| } else { |
| name = value; |
| if (name[0] == '@') { |
| is_meta = 1; |
| name++; |
| } |
| name_len = value_len - is_meta; |
| } |
| |
| *name_p = name; |
| *name_len_p = name_len; |
| *prefix_p = prefix; |
| *prefix_len_p = prefix_len; |
| *is_meta_p = is_meta; |
| } |
| |
| /** |
| * @brief Get correct prefix (module_name) inside the @p node. |
| * |
| * @param[in] node Data node to get inherited prefix. |
| * @param[in] local_prefix Local prefix to replace the inherited prefix. |
| * @param[in] local_prefix_len Length of the @p local_prefix string. In case of 0, the inherited prefix is taken. |
| * @param[out] prefix_p Pointer to the resulting prefix string, Note that the result can be NULL in case of no local prefix |
| * and no context @p node to get inherited prefix. |
| * @param[out] prefix_len_p Pointer to the length of the resulting @p prefix_p string. Note that the result can be 0 in case |
| * of no local prefix and no context @p node to get inherited prefix. |
| * @return LY_ERR value. |
| */ |
| static LY_ERR |
| lydjson_get_node_prefix(struct lyd_node *node, const char *local_prefix, size_t local_prefix_len, const char **prefix_p, |
| size_t *prefix_len_p) |
| { |
| struct lyd_node_opaq *onode; |
| const char *module_name = NULL; |
| |
| assert(prefix_p && prefix_len_p); |
| |
| if (local_prefix_len) { |
| *prefix_p = local_prefix; |
| *prefix_len_p = local_prefix_len; |
| return LY_SUCCESS; |
| } |
| |
| *prefix_p = NULL; |
| while (node) { |
| if (node->schema) { |
| *prefix_p = node->schema->module->name; |
| break; |
| } |
| onode = (struct lyd_node_opaq *)node; |
| if (onode->name.module_name) { |
| *prefix_p = onode->name.module_name; |
| break; |
| } else if (onode->name.prefix) { |
| *prefix_p = onode->name.prefix; |
| break; |
| } |
| node = lyd_parent(node); |
| } |
| *prefix_len_p = ly_strlen(module_name); |
| |
| return LY_SUCCESS; |
| } |
| |
| /** |
| * @brief Skip the current JSON object/array. |
| * |
| * @param[in] jsonctx JSON context with the input data to skip. |
| * @return LY_ERR value. |
| */ |
| static LY_ERR |
| lydjson_data_skip(struct lyjson_ctx *jsonctx) |
| { |
| enum LYJSON_PARSER_STATUS status, current; |
| uint32_t orig_depth; |
| |
| status = lyjson_ctx_status(jsonctx, 0); |
| assert((status == LYJSON_OBJECT) || (status == LYJSON_ARRAY)); |
| orig_depth = jsonctx->depth; |
| |
| /* next */ |
| LY_CHECK_RET(lyjson_ctx_next(jsonctx, ¤t)); |
| |
| if ((status == LYJSON_OBJECT) && (current != LYJSON_OBJECT) && (current != LYJSON_ARRAY)) { |
| /* no nested objects */ |
| LY_CHECK_RET(lyjson_ctx_next(jsonctx, NULL)); |
| return LY_SUCCESS; |
| } |
| |
| /* skip after the content */ |
| while ((jsonctx->depth > orig_depth) || (current != status + 1)) { |
| if (current == LYJSON_ARRAY) { |
| /* skip the array separately */ |
| LY_CHECK_RET(lydjson_data_skip(jsonctx)); |
| current = lyjson_ctx_status(jsonctx, 0); |
| } else { |
| LY_CHECK_RET(lyjson_ctx_next(jsonctx, ¤t)); |
| } |
| |
| if (current == LYJSON_END) { |
| break; |
| } |
| } |
| |
| return LY_SUCCESS; |
| } |
| |
| /** |
| * @brief Get schema node corresponding to the input parameters. |
| * |
| * @param[in] lydctx JSON data parser context. |
| * @param[in] is_attr Flag if the reference to the node is an attribute, for logging only. |
| * @param[in] prefix Requested node's prefix (module name). |
| * @param[in] prefix_len Length of the @p prefix. |
| * @param[in] name Requested node's name. |
| * @param[in] name_len Length of the @p name. |
| * @param[in] parent Parent of the node being processed, can be NULL in case of top-level. |
| * @param[out] snode Found schema node corresponding to the input parameters. If NULL, parse as an opaque node. |
| * @param[out] ext Extension instance that provided @p snode, if any. |
| * @return LY_SUCCES on success. |
| * @return LY_ENOT if the whole object was parsed (skipped or as an extension). |
| * @return LY_ERR on error. |
| */ |
| static LY_ERR |
| lydjson_get_snode(struct lyd_json_ctx *lydctx, ly_bool is_attr, const char *prefix, size_t prefix_len, const char *name, |
| size_t name_len, struct lyd_node *parent, const struct lysc_node **snode, struct lysc_ext_instance **ext) |
| { |
| LY_ERR ret = LY_SUCCESS, r; |
| struct lys_module *mod = NULL; |
| uint32_t getnext_opts = lydctx->int_opts & LYD_INTOPT_REPLY ? LYS_GETNEXT_OUTPUT : 0; |
| |
| *snode = NULL; |
| *ext = NULL; |
| |
| /* get the element module, prefer parent context because of extensions */ |
| if (prefix_len) { |
| mod = ly_ctx_get_module_implemented2(parent ? LYD_CTX(parent) : lydctx->jsonctx->ctx, prefix, prefix_len); |
| } else if (parent) { |
| if (parent->schema) { |
| mod = parent->schema->module; |
| } |
| } else { |
| LOGVAL(lydctx->jsonctx->ctx, LYVE_SYNTAX_JSON, "Top-level JSON object member \"%.*s\" must be namespace-qualified.", |
| (int)(is_attr ? name_len + 1 : name_len), is_attr ? name - 1 : name); |
| ret = LY_EVALID; |
| goto cleanup; |
| } |
| if (!mod) { |
| /* check for extension data */ |
| r = ly_nested_ext_schema(parent, NULL, prefix, prefix_len, LY_VALUE_JSON, NULL, name, name_len, snode, ext); |
| if (r != LY_ENOT) { |
| /* success or error */ |
| ret = r; |
| goto cleanup; |
| } |
| |
| /* unknown module */ |
| if (lydctx->parse_opts & LYD_PARSE_STRICT) { |
| LOGVAL(lydctx->jsonctx->ctx, LYVE_REFERENCE, "No module named \"%.*s\" in the context.", (int)prefix_len, prefix); |
| ret = LY_EVALID; |
| goto cleanup; |
| } |
| if (!(lydctx->parse_opts & LYD_PARSE_OPAQ)) { |
| /* skip element with children */ |
| ret = lydjson_data_skip(lydctx->jsonctx); |
| LY_CHECK_GOTO(ret, cleanup); |
| |
| ret = LY_ENOT; |
| goto cleanup; |
| } |
| } |
| |
| /* get the schema node */ |
| if (mod && (!parent || parent->schema)) { |
| 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_JSON, NULL, name, name_len, snode, ext); |
| if (r != LY_ENOT) { |
| /* success or error */ |
| ret = r; |
| goto cleanup; |
| } |
| |
| /* unknown data node */ |
| if (lydctx->parse_opts & LYD_PARSE_STRICT) { |
| if (parent) { |
| LOGVAL(lydctx->jsonctx->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(lydctx->jsonctx->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(lydctx->jsonctx->ctx, LYVE_REFERENCE, "Node \"%.*s\" not found in the %s extension instance.", |
| (int)name_len, name, lydctx->ext->def->name); |
| } |
| } else { |
| LOGVAL(lydctx->jsonctx->ctx, LYVE_REFERENCE, "Node \"%.*s\" not found in the \"%s\" module.", |
| (int)name_len, name, mod->name); |
| } |
| ret = LY_EVALID; |
| goto cleanup; |
| } else if (!(lydctx->parse_opts & LYD_PARSE_OPAQ)) { |
| /* skip element with children */ |
| ret = lydjson_data_skip(lydctx->jsonctx); |
| LY_CHECK_GOTO(ret, cleanup); |
| |
| ret = LY_ENOT; |
| goto cleanup; |
| } |
| } else { |
| /* check that schema node is valid and can be used */ |
| ret = lyd_parser_check_schema((struct lyd_ctx *)lydctx, *snode); |
| } |
| } |
| |
| cleanup: |
| return ret; |
| } |
| |
| /** |
| * @brief Check that the input data are parseable as the @p list. |
| * |
| * Checks for all the list's keys. Function does not revert the context state. |
| * |
| * @param[in] jsonctx JSON parser context. |
| * @param[in] list List schema node corresponding to the input data object. |
| * @return LY_SUCCESS in case the data are ok for the @p list |
| * @return LY_ENOT in case the input data are not sufficient to fully parse the list instance. |
| */ |
| static LY_ERR |
| lydjson_check_list(struct lyjson_ctx *jsonctx, const struct lysc_node *list) |
| { |
| LY_ERR ret = LY_SUCCESS; |
| enum LYJSON_PARSER_STATUS status = lyjson_ctx_status(jsonctx, 0); |
| struct ly_set key_set = {0}; |
| const struct lysc_node *snode; |
| uint32_t i, status_count; |
| |
| assert(list && (list->nodetype == LYS_LIST)); |
| assert(status == LYJSON_OBJECT); |
| |
| /* 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); |
| } |
| |
| if (status != LYJSON_OBJECT_EMPTY) { |
| status_count = jsonctx->status.count; |
| |
| while (key_set.count && status != LYJSON_OBJECT_CLOSED) { |
| const char *name, *prefix; |
| size_t name_len, prefix_len; |
| ly_bool is_attr; |
| |
| /* match the key */ |
| snode = NULL; |
| lydjson_parse_name(jsonctx->value, jsonctx->value_len, &name, &name_len, &prefix, &prefix_len, &is_attr); |
| |
| if (!is_attr && !prefix) { |
| for (i = 0; i < key_set.count; ++i) { |
| snode = (const struct lysc_node *)key_set.objs[i]; |
| if (!ly_strncmp(snode->name, name, name_len)) { |
| break; |
| } |
| } |
| /* go into the item to a) process it as a key or b) start skipping it as another list child */ |
| ret = lyjson_ctx_next(jsonctx, &status); |
| LY_CHECK_GOTO(ret, cleanup); |
| |
| if (snode) { |
| /* we have the key, validate the value */ |
| if (status < LYJSON_NUMBER) { |
| /* not a terminal */ |
| ret = LY_ENOT; |
| goto cleanup; |
| } |
| |
| ret = lys_value_validate(NULL, snode, jsonctx->value, jsonctx->value_len, LY_VALUE_JSON, NULL); |
| LY_CHECK_GOTO(ret, cleanup); |
| |
| /* key with a valid value, remove from the set */ |
| ly_set_rm_index(&key_set, i, NULL); |
| } |
| } else { |
| /* start skipping the member we are not interested in */ |
| ret = lyjson_ctx_next(jsonctx, &status); |
| LY_CHECK_GOTO(ret, cleanup); |
| } |
| /* move to the next child */ |
| while (status_count < jsonctx->status.count) { |
| ret = lyjson_ctx_next(jsonctx, &status); |
| LY_CHECK_GOTO(ret, 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 Get the hint for the data type parsers according to the current JSON parser context. |
| * |
| * @param[in] lydctx JSON data parser context. The context is supposed to be on a value. |
| * @param[in,out] status Pointer to the current context status, |
| * in some circumstances the function manipulates with the context so the status is updated. |
| * @param[out] type_hint_p Pointer to the variable to store the result. |
| * @return LY_SUCCESS in case of success. |
| * @return LY_EINVAL in case of invalid context status not referring to a value. |
| */ |
| static LY_ERR |
| lydjson_value_type_hint(struct lyd_json_ctx *lydctx, enum LYJSON_PARSER_STATUS *status_p, uint32_t *type_hint_p) |
| { |
| *type_hint_p = 0; |
| |
| if (*status_p == LYJSON_ARRAY) { |
| /* only [null] */ |
| LY_CHECK_RET(lyjson_ctx_next(lydctx->jsonctx, status_p)); |
| if (*status_p != LYJSON_NULL) { |
| LOGVAL(lydctx->jsonctx->ctx, LYVE_SYNTAX_JSON, |
| "Expected JSON name/value or special name/[null], but input data contains name/[%s].", |
| lyjson_token2str(*status_p)); |
| return LY_EINVAL; |
| } |
| |
| LY_CHECK_RET(lyjson_ctx_next(lydctx->jsonctx, NULL)); |
| if (lyjson_ctx_status(lydctx->jsonctx, 0) != LYJSON_ARRAY_CLOSED) { |
| LOGVAL(lydctx->jsonctx->ctx, LYVE_SYNTAX_JSON, "Expected array end, but input data contains %s.", |
| lyjson_token2str(*status_p)); |
| return LY_EINVAL; |
| } |
| |
| *type_hint_p = LYD_VALHINT_EMPTY; |
| } else if (*status_p == LYJSON_STRING) { |
| *type_hint_p = LYD_VALHINT_STRING | LYD_VALHINT_NUM64; |
| } else if (*status_p == LYJSON_NUMBER) { |
| *type_hint_p = LYD_VALHINT_DECNUM; |
| } else if ((*status_p == LYJSON_FALSE) || (*status_p == LYJSON_TRUE)) { |
| *type_hint_p = LYD_VALHINT_BOOLEAN; |
| } else if (*status_p == LYJSON_NULL) { |
| *type_hint_p = 0; |
| } else { |
| LOGVAL(lydctx->jsonctx->ctx, LYVE_SYNTAX_JSON, "Unexpected input data %s.", lyjson_token2str(*status_p)); |
| return LY_EINVAL; |
| } |
| |
| return LY_SUCCESS; |
| } |
| |
| /** |
| * @brief Check in advance if the input data are parsable according to the provided @p snode. |
| * |
| * Note that the checks are done only in case the LYD_PARSE_OPAQ is allowed. Otherwise the same checking |
| * is naturally done when the data are really parsed. |
| * |
| * @param[in] lydctx JSON data parser context. When the function returns, the context is in the same state |
| * as before calling, despite it is necessary to process input data for checking. |
| * @param[in] snode Schema node corresponding to the member currently being processed in the context. |
| * @param[out] type_hint_p Pointer to a variable to store detected value type hint in case of leaf or leaf-list. |
| * @return LY_SUCCESS in case the data are ok for the @p snode or the LYD_PARSE_OPAQ is not enabled. |
| * @return LY_ENOT in case the input data are not sufficient to fully parse the list instance |
| * @return LY_EINVAL in case of invalid leaf JSON encoding |
| * and they are expected to be parsed as opaq nodes. |
| */ |
| static LY_ERR |
| lydjson_data_check_opaq(struct lyd_json_ctx *lydctx, const struct lysc_node *snode, uint32_t *type_hint_p) |
| { |
| LY_ERR ret = LY_SUCCESS; |
| struct lyjson_ctx *jsonctx = lydctx->jsonctx; |
| enum LYJSON_PARSER_STATUS status; |
| |
| assert(snode); |
| |
| if (!(snode->nodetype & (LYD_NODE_TERM | LYS_LIST))) { |
| /* can always be parsed as a data node if we have the schema node */ |
| return LY_SUCCESS; |
| } |
| |
| /* backup parser */ |
| lyjson_ctx_backup(jsonctx); |
| status = lyjson_ctx_status(jsonctx, 0); |
| |
| if (lydctx->parse_opts & LYD_PARSE_OPAQ) { |
| /* check if the node is parseable. if not, NULL the snode to announce that it is supposed to be parsed |
| * as an opaq node */ |
| switch (snode->nodetype) { |
| case LYS_LEAFLIST: |
| case LYS_LEAF: |
| /* value may not be valid in which case we parse it as an opaque node */ |
| ret = lydjson_value_type_hint(lydctx, &status, type_hint_p); |
| if (ret) { |
| break; |
| } |
| |
| if (lys_value_validate(NULL, snode, jsonctx->value, jsonctx->value_len, LY_VALUE_JSON, NULL)) { |
| ret = LY_ENOT; |
| } |
| break; |
| case LYS_LIST: |
| /* lists may not have all its keys */ |
| if (lydjson_check_list(jsonctx, snode)) { |
| /* invalid list, parse as opaque if it missing/has invalid some keys */ |
| ret = LY_ENOT; |
| } |
| break; |
| } |
| } else if (snode->nodetype & LYD_NODE_TERM) { |
| status = lyjson_ctx_status(jsonctx, 0); |
| ret = lydjson_value_type_hint(lydctx, &status, type_hint_p); |
| } |
| |
| /* restore parser */ |
| lyjson_ctx_restore(jsonctx); |
| |
| return ret; |
| } |
| |
| /** |
| * @brief Join the forward-referencing metadata with their target data nodes. |
| * |
| * Note that JSON encoding for YANG data allows forward-referencing metadata only for leafs/leaf-lists. |
| * |
| * @param[in] lydctx JSON data parser context. |
| * @param[in,out] first_p Pointer to the first sibling node variable (top-level or in a particular parent node) |
| * as a starting point to search for the metadata's target data node |
| * @return LY_SUCCESS on success |
| * @return LY_EVALID in case there are some metadata with unresolved target data node instance |
| */ |
| static LY_ERR |
| lydjson_metadata_finish(struct lyd_json_ctx *lydctx, struct lyd_node **first_p) |
| { |
| LY_ERR ret = LY_SUCCESS; |
| struct lyd_node *node, *attr, *next, *meta_iter; |
| struct lysc_ext_instance *ext; |
| uint64_t instance = 0; |
| const char *prev = NULL; |
| uint32_t log_location_items = 0; |
| |
| /* finish linking metadata */ |
| LY_LIST_FOR_SAFE(*first_p, next, attr) { |
| struct lyd_node_opaq *meta_container = (struct lyd_node_opaq *)attr; |
| uint64_t match = 0; |
| ly_bool is_attr; |
| const char *name, *prefix; |
| size_t name_len, prefix_len; |
| const struct lysc_node *snode; |
| |
| if (attr->schema || (meta_container->name.name[0] != '@')) { |
| /* not an opaq metadata node */ |
| continue; |
| } |
| |
| LOG_LOCSET(NULL, attr, NULL, NULL); |
| log_location_items++; |
| |
| if (prev != meta_container->name.name) { |
| /* metas' names are stored in dictionary, so checking pointers must works */ |
| lydict_remove(lydctx->jsonctx->ctx, prev); |
| LY_CHECK_GOTO(ret = lydict_insert(lydctx->jsonctx->ctx, meta_container->name.name, 0, &prev), cleanup); |
| instance = 1; |
| } else { |
| instance++; |
| } |
| |
| /* find the corresponding data node */ |
| LY_LIST_FOR(*first_p, node) { |
| if (!node->schema) { |
| /* opaq node - we are going to put into it just a generic attribute. */ |
| if (strcmp(&meta_container->name.name[1], ((struct lyd_node_opaq *)node)->name.name)) { |
| continue; |
| } |
| |
| if (((struct lyd_node_opaq *)node)->hints & LYD_NODEHINT_LIST) { |
| LOGVAL(lydctx->jsonctx->ctx, LYVE_SYNTAX, "Metadata container references a sibling list node %s.", |
| ((struct lyd_node_opaq *)node)->name.name); |
| ret = LY_EVALID; |
| goto cleanup; |
| } |
| |
| /* match */ |
| match++; |
| if (match != instance) { |
| continue; |
| } |
| |
| LY_LIST_FOR(meta_container->child, meta_iter) { |
| /* convert opaq node to a attribute of the opaq node */ |
| struct lyd_node_opaq *meta = (struct lyd_node_opaq *)meta_iter; |
| |
| ret = lyd_create_attr(node, NULL, lydctx->jsonctx->ctx, meta->name.name, strlen(meta->name.name), |
| meta->name.prefix, ly_strlen(meta->name.prefix), meta->name.module_name, |
| ly_strlen(meta->name.module_name), meta->value, ly_strlen(meta->value), NULL, LY_VALUE_JSON, |
| NULL, meta->hints); |
| LY_CHECK_GOTO(ret, cleanup); |
| } |
| |
| /* done */ |
| break; |
| } else { |
| /* this is the second time we are resolving the schema node, so it must succeed, |
| * but remember that snode can be still NULL */ |
| lydjson_parse_name(meta_container->name.name, strlen(meta_container->name.name), &name, &name_len, |
| &prefix, &prefix_len, &is_attr); |
| assert(is_attr); |
| lydjson_get_snode(lydctx, is_attr, prefix, prefix_len, name, name_len, lyd_parent(*first_p), &snode, &ext); |
| |
| if (snode != node->schema) { |
| continue; |
| } |
| |
| /* match */ |
| match++; |
| if (match != instance) { |
| continue; |
| } |
| |
| LY_LIST_FOR(meta_container->child, meta_iter) { |
| /* convert opaq node to a metadata of the node */ |
| struct lyd_node_opaq *meta = (struct lyd_node_opaq *)meta_iter; |
| struct lys_module *mod = NULL; |
| |
| mod = ly_ctx_get_module_implemented(lydctx->jsonctx->ctx, meta->name.prefix); |
| if (mod) { |
| ret = lyd_parser_create_meta((struct lyd_ctx *)lydctx, node, NULL, mod, |
| meta->name.name, strlen(meta->name.name), meta->value, ly_strlen(meta->value), |
| NULL, LY_VALUE_JSON, NULL, meta->hints, node->schema); |
| LY_CHECK_GOTO(ret, cleanup); |
| } else if (lydctx->parse_opts & LYD_PARSE_STRICT) { |
| if (meta->name.prefix) { |
| LOGVAL(lydctx->jsonctx->ctx, LYVE_REFERENCE, |
| "Unknown (or not implemented) YANG module \"%s\" of metadata \"%s%s%s\".", |
| meta->name.prefix, meta->name.prefix, ly_strlen(meta->name.prefix) ? ":" : "", |
| meta->name.name); |
| } else { |
| LOGVAL(lydctx->jsonctx->ctx, LYVE_REFERENCE, "Missing YANG module of metadata \"%s\".", |
| meta->name.name); |
| } |
| ret = LY_EVALID; |
| goto cleanup; |
| } |
| } |
| |
| /* add/correct flags */ |
| ret = lyd_parse_set_data_flags(node, &node->meta, (struct lyd_ctx *)lydctx, ext); |
| LY_CHECK_GOTO(ret, cleanup); |
| break; |
| } |
| } |
| |
| if (match != instance) { |
| /* there is no corresponding data node for the metadata */ |
| if (instance > 1) { |
| LOGVAL(lydctx->jsonctx->ctx, LYVE_REFERENCE, |
| "Missing JSON data instance #%" PRIu64 " to be coupled with %s metadata.", |
| instance, meta_container->name.name); |
| } else { |
| LOGVAL(lydctx->jsonctx->ctx, LYVE_REFERENCE, "Missing JSON data instance to be coupled with %s metadata.", |
| meta_container->name.name); |
| } |
| ret = LY_EVALID; |
| } else { |
| /* remove the opaq attr */ |
| if (attr == (*first_p)) { |
| *first_p = attr->next; |
| } |
| lyd_free_tree(attr); |
| } |
| |
| LOG_LOCBACK(0, log_location_items, 0, 0); |
| log_location_items = 0; |
| } |
| |
| cleanup: |
| lydict_remove(lydctx->jsonctx->ctx, prev); |
| |
| LOG_LOCBACK(0, log_location_items, 0, 0); |
| return ret; |
| } |
| |
| /** |
| * @brief Parse a metadata member. |
| * |
| * @param[in] lydctx JSON data parser context. |
| * @param[in] snode Schema node of the metadata parent. |
| * @param[in] node Parent node in case the metadata is not forward-referencing (only LYD_NODE_TERM) |
| * so the data node does not exists. In such a case the metadata is stored in the context for the later |
| * processing by lydjson_metadata_finish(). |
| * @return LY_SUCCESS on success |
| * @return Various LY_ERR values in case of failure. |
| */ |
| static LY_ERR |
| lydjson_metadata(struct lyd_json_ctx *lydctx, const struct lysc_node *snode, struct lyd_node *node) |
| { |
| LY_ERR ret = LY_SUCCESS; |
| enum LYJSON_PARSER_STATUS status; |
| const char *expected; |
| ly_bool in_parent = 0; |
| const char *name, *prefix = NULL; |
| char *dynamic_prefname = NULL; |
| size_t name_len, prefix_len = 0; |
| struct lys_module *mod; |
| struct lyd_meta *meta = NULL; |
| const struct ly_ctx *ctx = lydctx->jsonctx->ctx; |
| ly_bool is_attr = 0; |
| struct lyd_node *prev = node; |
| uint32_t instance = 0; |
| uint16_t nodetype; |
| |
| assert(snode || node); |
| |
| nodetype = snode ? snode->nodetype : LYS_CONTAINER; |
| |
| /* move to the second item in the name/X pair */ |
| ret = lyjson_ctx_next(lydctx->jsonctx, &status); |
| LY_CHECK_GOTO(ret, cleanup); |
| |
| /* check attribute encoding */ |
| switch (nodetype) { |
| case LYS_LEAFLIST: |
| expected = "@name/array of objects/nulls"; |
| |
| LY_CHECK_GOTO(status != LYJSON_ARRAY, representation_error); |
| |
| next_entry: |
| instance++; |
| |
| /* move into array / next entry */ |
| ret = lyjson_ctx_next(lydctx->jsonctx, &status); |
| LY_CHECK_GOTO(ret, cleanup); |
| |
| if (status == LYJSON_ARRAY_CLOSED) { |
| /* we are done, move after the array */ |
| ret = lyjson_ctx_next(lydctx->jsonctx, NULL); |
| goto cleanup; |
| } |
| LY_CHECK_GOTO(status != LYJSON_OBJECT && status != LYJSON_NULL, representation_error); |
| |
| if (!node || (node->schema != prev->schema)) { |
| LOGVAL(lydctx->jsonctx->ctx, LYVE_REFERENCE, "Missing JSON data instance #%u of %s:%s to be coupled with metadata.", |
| instance, prev->schema->module->name, prev->schema->name); |
| ret = LY_EVALID; |
| goto cleanup; |
| } |
| |
| if (status == LYJSON_NULL) { |
| /* continue with the next entry in the leaf-list array */ |
| prev = node; |
| node = node->next; |
| goto next_entry; |
| } |
| break; |
| case LYS_LEAF: |
| case LYS_ANYXML: |
| expected = "@name/object"; |
| |
| LY_CHECK_GOTO(status != LYJSON_OBJECT, representation_error); |
| break; |
| case LYS_CONTAINER: |
| case LYS_LIST: |
| case LYS_ANYDATA: |
| case LYS_NOTIF: |
| case LYS_ACTION: |
| case LYS_RPC: |
| in_parent = 1; |
| expected = "@/object"; |
| LY_CHECK_GOTO(status != LYJSON_OBJECT, representation_error); |
| break; |
| default: |
| LOGINT_RET(ctx); |
| } |
| |
| /* process all the members inside a single metadata object */ |
| assert(status == LYJSON_OBJECT); |
| |
| LOG_LOCSET(snode, NULL, NULL, NULL); |
| |
| while (status != LYJSON_OBJECT_CLOSED) { |
| LY_CHECK_GOTO(status != LYJSON_OBJECT, representation_error); |
| |
| lydjson_parse_name(lydctx->jsonctx->value, lydctx->jsonctx->value_len, &name, &name_len, &prefix, &prefix_len, &is_attr); |
| lyjson_ctx_give_dynamic_value(lydctx->jsonctx, &dynamic_prefname); |
| |
| if (!name_len) { |
| LOGVAL(ctx, LYVE_SYNTAX_JSON, "Metadata in JSON found with an empty name, followed by: %.10s", name); |
| ret = LY_EVALID; |
| goto cleanup; |
| } else if (!prefix_len) { |
| LOGVAL(ctx, LYVE_SYNTAX_JSON, "Metadata in JSON must be namespace-qualified, missing prefix for \"%.*s\".", |
| (int)lydctx->jsonctx->value_len, lydctx->jsonctx->value); |
| ret = LY_EVALID; |
| goto cleanup; |
| } else if (is_attr) { |
| LOGVAL(ctx, LYVE_SYNTAX_JSON, "Invalid format of the Metadata identifier in JSON, unexpected '@' in \"%.*s\"", |
| (int)lydctx->jsonctx->value_len, lydctx->jsonctx->value); |
| ret = LY_EVALID; |
| goto cleanup; |
| } |
| |
| /* get the element module */ |
| mod = ly_ctx_get_module_implemented2(ctx, prefix, prefix_len); |
| if (!mod) { |
| if (lydctx->parse_opts & LYD_PARSE_STRICT) { |
| LOGVAL(ctx, LYVE_REFERENCE, "Prefix \"%.*s\" of the metadata \"%.*s\" does not match any module in the context.", |
| (int)prefix_len, prefix, (int)name_len, name); |
| ret = LY_EVALID; |
| goto cleanup; |
| } |
| if (node->schema) { |
| /* skip element with children */ |
| ret = lydjson_data_skip(lydctx->jsonctx); |
| LY_CHECK_GOTO(ret, cleanup); |
| status = lyjson_ctx_status(lydctx->jsonctx, 0); |
| /* end of the item */ |
| continue; |
| } |
| assert(lydctx->parse_opts & LYD_PARSE_OPAQ); |
| } |
| |
| /* get the value */ |
| ret = lyjson_ctx_next(lydctx->jsonctx, NULL); |
| LY_CHECK_GOTO(ret, cleanup); |
| |
| if (node->schema) { |
| /* create metadata */ |
| meta = NULL; |
| ret = lyd_parser_create_meta((struct lyd_ctx *)lydctx, node, &meta, mod, name, name_len, lydctx->jsonctx->value, |
| lydctx->jsonctx->value_len, &lydctx->jsonctx->dynamic, LY_VALUE_JSON, NULL, LYD_HINT_DATA, node->schema); |
| LY_CHECK_GOTO(ret, cleanup); |
| |
| /* add/correct flags */ |
| ret = lyd_parse_set_data_flags(node, &meta, (struct lyd_ctx *)lydctx, NULL); |
| LY_CHECK_GOTO(ret, cleanup); |
| } else { |
| /* create attribute */ |
| const char *module_name; |
| size_t module_name_len; |
| |
| lydjson_get_node_prefix(node, prefix, prefix_len, &module_name, &module_name_len); |
| |
| /* attr2 is always changed to the created attribute */ |
| ret = lyd_create_attr(node, NULL, lydctx->jsonctx->ctx, name, name_len, prefix, prefix_len, module_name, |
| module_name_len, lydctx->jsonctx->value, lydctx->jsonctx->value_len, &lydctx->jsonctx->dynamic, |
| LY_VALUE_JSON, NULL, 0); |
| LY_CHECK_GOTO(ret, cleanup); |
| } |
| /* next member */ |
| ret = lyjson_ctx_next(lydctx->jsonctx, &status); |
| LY_CHECK_GOTO(ret, cleanup); |
| LY_CHECK_GOTO((status != LYJSON_OBJECT) && (status != LYJSON_OBJECT_CLOSED), representation_error); |
| } |
| |
| if (nodetype == LYS_LEAFLIST) { |
| /* continue by processing another metadata object for the following |
| * leaf-list instance since they are allways instantiated in JSON array */ |
| prev = node; |
| node = node->next; |
| goto next_entry; |
| } |
| |
| /* success */ |
| goto cleanup; |
| |
| representation_error: |
| LOGVAL(ctx, LYVE_SYNTAX_JSON, |
| "The attribute(s) of %s \"%s\" is expected to be represented as JSON %s, but input data contains @%s/%s.", |
| lys_nodetype2str(nodetype), node ? LYD_NAME(node) : LYD_NAME(prev), expected, lyjson_token2str(status), |
| in_parent ? "" : "name"); |
| |
| ret = LY_EVALID; |
| |
| cleanup: |
| free(dynamic_prefname); |
| LOG_LOCBACK(1, 0, 0, 0); |
| return ret; |
| } |
| |
| /** |
| * @brief Eat the node pointed by @p node_p by inserting it into @p parent and maintain the @p first_p pointing |
| * to the first child node. |
| * |
| * @param[in] parent Parent node to insert to, can be NULL in case of top-level (or provided first_p). |
| * @param[in,out] first_p Pointer to the first sibling node in case of top-level. |
| * @param[in,out] node_p pointer to the new node to insert, after the insert is done, pointer is set to NULL. |
| * @param[in] last If set, always insert at the end. |
| * @param[in] ext Extension instance of @p node_p, if any. |
| */ |
| static void |
| lydjson_maintain_children(struct lyd_node *parent, struct lyd_node **first_p, struct lyd_node **node_p, ly_bool last, |
| struct lysc_ext_instance *ext) |
| { |
| if (*node_p) { |
| /* insert, keep first pointer correct */ |
| if (ext) { |
| lyplg_ext_insert(parent, *node_p); |
| } else { |
| lyd_insert_node(parent, first_p, *node_p, last); |
| } |
| if (first_p) { |
| if (parent) { |
| *first_p = lyd_child(parent); |
| } else { |
| while ((*first_p)->prev->next) { |
| *first_p = (*first_p)->prev; |
| } |
| } |
| } |
| *node_p = NULL; |
| } |
| } |
| |
| /** |
| * @brief Wrapper for ::lyd_create_opaq(). |
| * |
| * @param[in] lydctx JSON data parser context. |
| * @param[in] name Name of the opaq node to create. |
| * @param[in] name_len Length of the @p name string. |
| * @param[in] prefix Prefix of the opaq node to create. |
| * @param[in] prefix_len Length of the @p prefx string. |
| * @param[in] parent Data parent of the opaq node to create, can be NULL in case of top level, |
| * but must be set if @p first is not. |
| * @param[in,out] status_inner_p In case of processing JSON array, this parameter points to a standalone |
| * context status of the array content. Otherwise, it is supposed to be the same as @p status_p. |
| * @param[out] node_p Pointer to the created opaq node. |
| * @return LY_ERR value. |
| */ |
| static LY_ERR |
| lydjson_create_opaq(struct lyd_json_ctx *lydctx, const char *name, size_t name_len, const char *prefix, size_t prefix_len, |
| struct lyd_node *parent, enum LYJSON_PARSER_STATUS *status_inner_p, struct lyd_node **node_p) |
| { |
| LY_ERR ret = LY_SUCCESS; |
| const char *value = NULL, *module_name; |
| size_t value_len = 0, module_name_len = 0; |
| ly_bool dynamic = 0; |
| uint32_t type_hint = 0; |
| |
| if ((*status_inner_p != LYJSON_OBJECT) && (*status_inner_p != LYJSON_OBJECT_EMPTY)) { |
| /* prepare for creating opaq node with a value */ |
| value = lydctx->jsonctx->value; |
| value_len = lydctx->jsonctx->value_len; |
| dynamic = lydctx->jsonctx->dynamic; |
| lydctx->jsonctx->dynamic = 0; |
| |
| LY_CHECK_RET(lydjson_value_type_hint(lydctx, status_inner_p, &type_hint)); |
| } |
| |
| /* create node */ |
| lydjson_get_node_prefix(parent, prefix, prefix_len, &module_name, &module_name_len); |
| ret = lyd_create_opaq(lydctx->jsonctx->ctx, name, name_len, prefix, prefix_len, module_name, module_name_len, value, |
| value_len, &dynamic, LY_VALUE_JSON, NULL, type_hint, node_p); |
| if (dynamic) { |
| free((char *)value); |
| } |
| |
| return ret; |
| } |
| |
| static LY_ERR lydjson_subtree_r(struct lyd_json_ctx *lydctx, struct lyd_node *parent, struct lyd_node **first_p, |
| struct ly_set *parsed); |
| |
| /** |
| * @brief Parse opaq node from the input. |
| * |
| * In case of processing array, the whole array is being processed and the resulting @p node_p is the last item of the array. |
| * |
| * @param[in] lydctx JSON data parser context. |
| * @param[in] name Name of the opaq node to create. |
| * @param[in] name_len Length of the @p name string. |
| * @param[in] prefix Prefix of the opaq node to create. |
| * @param[in] prefix_len Length of the @p prefx string. |
| * @param[in] parent Data parent of the opaq node to create, can be NULL in case of top level, |
| * but must be set if @p first is not. |
| * @param[in,out] status_p Pointer to the current status of the parser context, |
| * since the function manipulates with the context and process the input, the status can be updated. |
| * @param[in,out] status_inner_p In case of processing JSON array, this parameter points to a standalone |
| * context status of the array content. Otherwise, it is supposed to be the same as @p status_p. |
| * @param[in,out] first_p First top-level/parent sibling, must be set if @p parent is not. |
| * @param[out] node_p Pointer to the created opaq node. |
| * @return LY_ERR value. |
| */ |
| static LY_ERR |
| lydjson_parse_opaq(struct lyd_json_ctx *lydctx, const char *name, size_t name_len, const char *prefix, size_t prefix_len, |
| struct lyd_node *parent, enum LYJSON_PARSER_STATUS *status_p, enum LYJSON_PARSER_STATUS *status_inner_p, |
| struct lyd_node **first_p, struct lyd_node **node_p) |
| { |
| LY_CHECK_RET(lydjson_create_opaq(lydctx, name, name_len, prefix, prefix_len, parent, status_inner_p, node_p)); |
| |
| if ((*status_p == LYJSON_ARRAY) && (*status_inner_p == LYJSON_NULL)) { |
| /* special array null value */ |
| ((struct lyd_node_opaq *)*node_p)->hints |= LYD_VALHINT_EMPTY; |
| |
| /* must be the only item */ |
| LY_CHECK_RET(lyjson_ctx_next(lydctx->jsonctx, status_inner_p)); |
| if (*status_inner_p != LYJSON_ARRAY_CLOSED) { |
| LOGVAL(lydctx->jsonctx->ctx, LYVE_SYNTAX, "Array \"null\" member with another member."); |
| return LY_EVALID; |
| } |
| |
| goto finish; |
| } |
| |
| while ((*status_p == LYJSON_ARRAY) || (*status_p == LYJSON_ARRAY_EMPTY)) { |
| /* process another instance of the same node */ |
| |
| if ((*status_inner_p == LYJSON_OBJECT) || (*status_inner_p == LYJSON_OBJECT_EMPTY)) { |
| /* array with objects, list */ |
| ((struct lyd_node_opaq *)*node_p)->hints |= LYD_NODEHINT_LIST; |
| |
| /* but first process children of the object in the array */ |
| while ((*status_inner_p != LYJSON_OBJECT_CLOSED) && (*status_inner_p != LYJSON_OBJECT_EMPTY)) { |
| LY_CHECK_RET(lydjson_subtree_r(lydctx, *node_p, lyd_node_child_p(*node_p), NULL)); |
| *status_inner_p = lyjson_ctx_status(lydctx->jsonctx, 0); |
| } |
| } else { |
| /* array with values, leaf-list */ |
| ((struct lyd_node_opaq *)*node_p)->hints |= LYD_NODEHINT_LEAFLIST; |
| } |
| |
| LY_CHECK_RET(lyjson_ctx_next(lydctx->jsonctx, status_inner_p)); |
| if (*status_inner_p == LYJSON_ARRAY_CLOSED) { |
| goto finish; |
| } |
| |
| /* continue with the next instance */ |
| assert(node_p); |
| lydjson_maintain_children(parent, first_p, node_p, lydctx->parse_opts & LYD_PARSE_ORDERED ? 1 : 0, NULL); |
| LY_CHECK_RET(lydjson_create_opaq(lydctx, name, name_len, prefix, prefix_len, parent, status_inner_p, node_p)); |
| } |
| |
| if ((*status_p == LYJSON_OBJECT) || (*status_p == LYJSON_OBJECT_EMPTY)) { |
| /* process children */ |
| while (*status_p != LYJSON_OBJECT_CLOSED && *status_p != LYJSON_OBJECT_EMPTY) { |
| LY_CHECK_RET(lydjson_subtree_r(lydctx, *node_p, lyd_node_child_p(*node_p), NULL)); |
| *status_p = lyjson_ctx_status(lydctx->jsonctx, 0); |
| } |
| } |
| |
| finish: |
| /* finish linking metadata */ |
| return lydjson_metadata_finish(lydctx, lyd_node_child_p(*node_p)); |
| } |
| |
| /** |
| * @brief Move to the second item in the name/X pair and parse opaq node from the input. |
| * |
| * This function is basically the wrapper of the ::lydjson_parse_opaq(). |
| * In addition, it calls the ::json_ctx_next() and prepares the status_inner_p parameter |
| * for ::lydjson_parse_opaq(). |
| * |
| * @param[in] lydctx JSON data parser context. |
| * @param[in] name Name of the opaq node to create. |
| * @param[in] name_len Length of the @p name string. |
| * @param[in] prefix Prefix of the opaq node to create. |
| * @param[in] prefix_len Length of the @p prefx string. |
| * @param[in] parent Data parent of the opaq node to create, can be NULL in case of top level, |
| * but must be set if @p first is not. |
| * @param[in,out] status_p Pointer to the current status of the parser context, |
| * since the function manipulates with the context and process the input, the status can be updated. |
| * @param[in,out] first_p First top-level/parent sibling, must be set if @p parent is not. |
| * @param[out] node_p Pointer to the created opaq node. |
| * @return LY_ERR value. |
| */ |
| static LY_ERR |
| lydjson_ctx_next_parse_opaq(struct lyd_json_ctx *lydctx, const char *name, size_t name_len, |
| const char *prefix, size_t prefix_len, struct lyd_node *parent, enum LYJSON_PARSER_STATUS *status_p, |
| struct lyd_node **first_p, struct lyd_node **node_p) |
| { |
| enum LYJSON_PARSER_STATUS status_inner = 0; |
| |
| /* move to the second item in the name/X pair */ |
| LY_CHECK_RET(lyjson_ctx_next(lydctx->jsonctx, status_p)); |
| |
| if (*status_p == LYJSON_ARRAY) { |
| /* move into the array */ |
| LY_CHECK_RET(lyjson_ctx_next(lydctx->jsonctx, &status_inner)); |
| } else { |
| /* just a flag to pass correct parameters into lydjson_parse_opaq() */ |
| status_inner = LYJSON_ERROR; |
| } |
| |
| if (status_inner == LYJSON_ERROR) { |
| status_inner = *status_p; |
| } |
| |
| /* parse opaq node from the input */ |
| LY_CHECK_RET(lydjson_parse_opaq(lydctx, name, name_len, prefix, prefix_len, parent, status_p, &status_inner, |
| first_p, node_p)); |
| |
| return LY_SUCCESS; |
| } |
| |
| /** |
| * @brief Process the attribute container (starting by @) |
| * |
| * @param[in] lydctx JSON data parser context. |
| * @param[in] attr_node The data node referenced by the attribute container, if already known. |
| * @param[in] snode The schema node of the data node referenced by the attribute container, if known. |
| * @param[in] name Name of the opaq node to create. |
| * @param[in] name_len Length of the @p name string. |
| * @param[in] prefix Prefix of the opaq node to create. |
| * @param[in] prefix_len Length of the @p prefx string. |
| * @param[in] parent Data parent of the opaq node to create, can be NULL in case of top level, |
| * but must be set if @p first is not. |
| * @param[in,out] status_p Pointer to the current status of the parser context, |
| * since the function manipulates with the context and process the input, the status can be updated. |
| * @param[in,out] first_p First top-level/parent sibling, must be set if @p parent is not. |
| * @param[out] node_p Pointer to the created opaq node. |
| * @return LY_ERR value. |
| */ |
| static LY_ERR |
| lydjson_parse_attribute(struct lyd_json_ctx *lydctx, struct lyd_node *attr_node, const struct lysc_node *snode, |
| const char *name, size_t name_len, const char *prefix, size_t prefix_len, struct lyd_node *parent, |
| enum LYJSON_PARSER_STATUS *status_p, struct lyd_node **first_p, struct lyd_node **node_p) |
| { |
| LY_ERR r; |
| const char *opaq_name; |
| size_t opaq_name_len; |
| |
| /* parse as an attribute to a node */ |
| if (!attr_node && snode) { |
| /* try to find the instance */ |
| for (struct lyd_node *iter = *first_p; iter; iter = iter->next) { |
| if (iter->schema == snode) { |
| attr_node = iter; |
| break; |
| } |
| } |
| } |
| if (!attr_node) { |
| /* parse just as an opaq node with the name beginning with @, |
| * later we have to check that it belongs to a standard node |
| * and it is supposed to be converted to a metadata */ |
| uint32_t prev_opts; |
| |
| /* backup parser options to parse unknown metadata as opaq nodes and try to resolve them later */ |
| prev_opts = lydctx->parse_opts; |
| lydctx->parse_opts &= ~LYD_PARSE_STRICT; |
| lydctx->parse_opts |= LYD_PARSE_OPAQ; |
| |
| opaq_name = prefix ? prefix - 1 : name - 1; |
| opaq_name_len = prefix ? prefix_len + name_len + 2 : name_len + 1; |
| r = lydjson_ctx_next_parse_opaq(lydctx, opaq_name, opaq_name_len, NULL, 0, parent, status_p, first_p, node_p); |
| |
| /* restore the parser options */ |
| lydctx->parse_opts = prev_opts; |
| LY_CHECK_RET(r); |
| } else { |
| LY_CHECK_RET(lydjson_metadata(lydctx, snode, attr_node)); |
| } |
| |
| return LY_SUCCESS; |
| } |
| |
| /** |
| * @brief Parse a single anydata/anyxml node. |
| * |
| * @param[in] lydctx JSON data parser context. When the function returns, the context is in the same state |
| * as before calling, despite it is necessary to process input data for checking. |
| * @param[in] snode Schema node corresponding to the member currently being processed in the context. |
| * @param[in] ext Extension instance of @p snode, if any. |
| * @param[in,out] status JSON parser status, is updated. |
| * @param[out] node Parsed data (or opaque) node. |
| * @return LY_SUCCESS if a node was successfully parsed, |
| * @return LY_ENOT in case of invalid JSON encoding, |
| * @return LY_ERR on other errors. |
| */ |
| static LY_ERR |
| lydjson_parse_any(struct lyd_json_ctx *lydctx, const struct lysc_node *snode, struct lysc_ext_instance *ext, |
| enum LYJSON_PARSER_STATUS *status, struct lyd_node **node) |
| { |
| LY_ERR r; |
| uint32_t prev_parse_opts, prev_int_opts; |
| struct ly_in in_start; |
| char *val; |
| struct lyd_node *tree = NULL; |
| |
| assert(snode->nodetype & LYD_NODE_ANY); |
| |
| /* status check according to allowed JSON types */ |
| if (snode->nodetype == LYS_ANYXML) { |
| LY_CHECK_RET((*status != LYJSON_OBJECT) && (*status != LYJSON_OBJECT_EMPTY) && (*status != LYJSON_ARRAY) && |
| (*status != LYJSON_NUMBER) && (*status != LYJSON_STRING) && (*status != LYJSON_FALSE) && |
| (*status != LYJSON_TRUE) && (*status != LYJSON_NULL), LY_ENOT); |
| } else { |
| LY_CHECK_RET((*status != LYJSON_OBJECT) && (*status != LYJSON_OBJECT_EMPTY) && (*status != LYJSON_ARRAY), LY_ENOT); |
| } |
| |
| if ((snode->nodetype == LYS_ANYDATA) && (*status == LYJSON_ARRAY)) { |
| /* only special anydata [null] allowed, 2 more moves are needed */ |
| LY_CHECK_RET(lyjson_ctx_next(lydctx->jsonctx, status)); |
| LY_CHECK_RET(*status != LYJSON_NULL, LY_ENOT); |
| LY_CHECK_RET(lyjson_ctx_next(lydctx->jsonctx, status)); |
| LY_CHECK_RET(*status != LYJSON_ARRAY_CLOSED, LY_ENOT); |
| |
| return lyd_create_any(snode, "[null]", LYD_ANYDATA_JSON, 0, node); |
| } |
| |
| /* create any node */ |
| switch (*status) { |
| case LYJSON_OBJECT: |
| /* parse any data tree with correct options, first backup the current options and then make the parser |
| * process data as opaq nodes */ |
| 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; |
| |
| /* process the anydata content */ |
| while (*status != LYJSON_OBJECT_CLOSED) { |
| LY_CHECK_RET(lydjson_subtree_r(lydctx, NULL, &tree, NULL)); |
| *status = lyjson_ctx_status(lydctx->jsonctx, 0); |
| } |
| |
| /* restore parser options */ |
| lydctx->parse_opts = prev_parse_opts; |
| lydctx->int_opts = prev_int_opts; |
| |
| /* finish linking metadata */ |
| LY_CHECK_RET(lydjson_metadata_finish(lydctx, &tree)); |
| |
| LY_CHECK_RET(lyd_create_any(snode, tree, LYD_ANYDATA_DATATREE, 1, node)); |
| break; |
| case LYJSON_ARRAY: |
| /* skip until the array end */ |
| in_start = *lydctx->jsonctx->in; |
| LY_CHECK_RET(lydjson_data_skip(lydctx->jsonctx)); |
| |
| /* make a copy of the whole array and store it */ |
| if (asprintf(&val, "[%.*s", (int)(lydctx->jsonctx->in->current - in_start.current), in_start.current) == -1) { |
| LOGMEM(lydctx->jsonctx->ctx); |
| return LY_EMEM; |
| } |
| r = lyd_create_any(snode, val, LYD_ANYDATA_JSON, 1, node); |
| if (r) { |
| free(val); |
| return r; |
| } |
| break; |
| case LYJSON_STRING: |
| /* string value */ |
| if (lydctx->jsonctx->dynamic) { |
| LY_CHECK_RET(lyd_create_any(snode, lydctx->jsonctx->value, LYD_ANYDATA_STRING, 1, node)); |
| lydctx->jsonctx->dynamic = 0; |
| } else { |
| val = strndup(lydctx->jsonctx->value, lydctx->jsonctx->value_len); |
| LY_CHECK_ERR_RET(!val, LOGMEM(lydctx->jsonctx->ctx), LY_EMEM); |
| |
| r = lyd_create_any(snode, val, LYD_ANYDATA_STRING, 1, node); |
| if (r) { |
| free(val); |
| return r; |
| } |
| } |
| break; |
| case LYJSON_NUMBER: |
| case LYJSON_FALSE: |
| case LYJSON_TRUE: |
| /* JSON value */ |
| assert(!lydctx->jsonctx->dynamic); |
| val = strndup(lydctx->jsonctx->value, lydctx->jsonctx->value_len); |
| LY_CHECK_ERR_RET(!val, LOGMEM(lydctx->jsonctx->ctx), LY_EMEM); |
| |
| r = lyd_create_any(snode, val, LYD_ANYDATA_JSON, 1, node); |
| if (r) { |
| free(val); |
| return r; |
| } |
| break; |
| case LYJSON_NULL: |
| /* no value */ |
| LY_CHECK_RET(lyd_create_any(snode, NULL, LYD_ANYDATA_JSON, 1, node)); |
| break; |
| case LYJSON_OBJECT_EMPTY: |
| /* empty object */ |
| LY_CHECK_RET(lyd_create_any(snode, NULL, LYD_ANYDATA_DATATREE, 1, node)); |
| break; |
| default: |
| LOGINT_RET(lydctx->jsonctx->ctx); |
| } |
| |
| return LY_SUCCESS; |
| } |
| |
| /** |
| * @brief Parse a single instance of an inner node. |
| * |
| * @param[in] lydctx JSON data parser context. |
| * @param[in] snode Schema node corresponding to the member currently being processed in the context. |
| * @param[in] ext Extension instance of @p snode, if any. |
| * @param[in,out] status JSON parser status, is updated. |
| * @param[out] node Parsed data (or opaque) node. |
| * @return LY_SUCCESS if a node was successfully parsed, |
| * @return LY_ENOT in case of invalid JSON encoding, |
| * @return LY_ERR on other errors. |
| */ |
| static LY_ERR |
| lydjson_parse_instance_inner(struct lyd_json_ctx *lydctx, const struct lysc_node *snode, struct lysc_ext_instance *ext, |
| enum LYJSON_PARSER_STATUS *status, struct lyd_node **node) |
| { |
| LY_ERR ret = LY_SUCCESS; |
| uint32_t prev_parse_opts = lydctx->parse_opts; |
| |
| LY_CHECK_RET((*status != LYJSON_OBJECT) && (*status != LYJSON_OBJECT_EMPTY), LY_ENOT); |
| |
| /* create inner node */ |
| LY_CHECK_RET(lyd_create_inner(snode, node)); |
| |
| /* use it for logging */ |
| LOG_LOCSET(NULL, *node, NULL, NULL); |
| |
| if (ext) { |
| /* only parse these extension data and validate afterwards */ |
| lydctx->parse_opts |= LYD_PARSE_ONLY; |
| } |
| |
| /* process children */ |
| while ((*status != LYJSON_OBJECT_CLOSED) && (*status != LYJSON_OBJECT_EMPTY)) { |
| ret = lydjson_subtree_r(lydctx, *node, lyd_node_child_p(*node), NULL); |
| LY_CHECK_GOTO(ret, cleanup); |
| *status = lyjson_ctx_status(lydctx->jsonctx, 0); |
| } |
| |
| /* finish linking metadata */ |
| ret = lydjson_metadata_finish(lydctx, lyd_node_child_p(*node)); |
| LY_CHECK_GOTO(ret, cleanup); |
| |
| if (snode->nodetype == LYS_LIST) { |
| /* check all keys exist */ |
| ret = lyd_parse_check_keys(*node); |
| LY_CHECK_GOTO(ret, cleanup); |
| } |
| |
| 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, cleanup); |
| |
| /* 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, cleanup); |
| } |
| |
| cleanup: |
| lydctx->parse_opts = prev_parse_opts; |
| LOG_LOCBACK(0, 1, 0, 0); |
| return ret; |
| } |
| |
| /** |
| * @brief Parse a single instance of a node. |
| * |
| * @param[in] lydctx JSON data parser context. When the function returns, the context is in the same state |
| * as before calling, despite it is necessary to process input data for checking. |
| * @param[in] parent Data parent of the subtree, must be set if @p first is not. |
| * @param[in,out] first_p Pointer to the variable holding the first top-level sibling, must be set if @p parent is not. |
| * @param[in] snode Schema node corresponding to the member currently being processed in the context. |
| * @param[in] ext Extension instance of @p snode, if any. |
| * @param[in] name Parsed JSON node name. |
| * @param[in] name_len Lenght of @p name. |
| * @param[in] prefix Parsed JSON node prefix. |
| * @param[in] prefix_len Length of @p prefix. |
| * @param[in,out] status JSON parser status, is updated. |
| * @param[out] node Parsed data (or opaque) node. |
| * @return LY_SUCCESS if a node was successfully parsed, |
| * @return LY_ENOT in case of invalid JSON encoding, |
| * @return LY_ERR on other errors. |
| */ |
| static LY_ERR |
| lydjson_parse_instance(struct lyd_json_ctx *lydctx, struct lyd_node *parent, struct lyd_node **first_p, |
| const struct lysc_node *snode, struct lysc_ext_instance *ext, const char *name, size_t name_len, |
| const char *prefix, size_t prefix_len, enum LYJSON_PARSER_STATUS *status, struct lyd_node **node) |
| { |
| LY_ERR ret = LY_SUCCESS; |
| uint32_t type_hints = 0; |
| |
| LOG_LOCSET(snode, NULL, NULL, NULL); |
| |
| ret = lydjson_data_check_opaq(lydctx, snode, &type_hints); |
| if (ret == LY_SUCCESS) { |
| assert(snode->nodetype & (LYD_NODE_TERM | LYD_NODE_INNER | LYD_NODE_ANY)); |
| if (snode->nodetype & LYD_NODE_TERM) { |
| if ((*status != LYJSON_ARRAY) && (*status != LYJSON_NUMBER) && (*status != LYJSON_STRING) && |
| (*status != LYJSON_FALSE) && (*status != LYJSON_TRUE) && (*status != LYJSON_NULL)) { |
| ret = LY_ENOT; |
| goto cleanup; |
| } |
| |
| /* create terminal node */ |
| LY_CHECK_GOTO(ret = lyd_parser_create_term((struct lyd_ctx *)lydctx, snode, lydctx->jsonctx->value, |
| lydctx->jsonctx->value_len, &lydctx->jsonctx->dynamic, LY_VALUE_JSON, NULL, type_hints, node), cleanup); |
| |
| /* move JSON parser */ |
| if (*status == LYJSON_ARRAY) { |
| /* only [null], 2 more moves are needed */ |
| LY_CHECK_GOTO(ret = lyjson_ctx_next(lydctx->jsonctx, status), cleanup); |
| assert(*status == LYJSON_NULL); |
| LY_CHECK_GOTO(ret = lyjson_ctx_next(lydctx->jsonctx, status), cleanup); |
| assert(*status == LYJSON_ARRAY_CLOSED); |
| } |
| } else if (snode->nodetype & LYD_NODE_INNER) { |
| /* create inner node */ |
| LY_CHECK_GOTO(ret = lydjson_parse_instance_inner(lydctx, snode, ext, status, node), cleanup); |
| } else { |
| /* create any node */ |
| LY_CHECK_GOTO(ret = lydjson_parse_any(lydctx, snode, ext, status, node), cleanup); |
| } |
| |
| /* add/correct flags */ |
| LY_CHECK_GOTO(ret = lyd_parse_set_data_flags(*node, &(*node)->meta, (struct lyd_ctx *)lydctx, ext), cleanup); |
| |
| 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), cleanup); |
| } |
| } else if (ret == LY_ENOT) { |
| /* parse it again as an opaq node */ |
| LY_CHECK_GOTO(ret = lydjson_parse_opaq(lydctx, name, name_len, prefix, prefix_len, parent, status, status, |
| first_p, node), cleanup); |
| |
| if (snode->nodetype == LYS_LIST) { |
| ((struct lyd_node_opaq *)*node)->hints |= LYD_NODEHINT_LIST; |
| } else if (snode->nodetype == LYS_LEAFLIST) { |
| ((struct lyd_node_opaq *)*node)->hints |= LYD_NODEHINT_LEAFLIST; |
| } |
| } else { |
| /* error */ |
| goto cleanup; |
| } |
| |
| cleanup: |
| LOG_LOCBACK(1, 0, 0, 0); |
| return ret; |
| } |
| |
| /** |
| * @brief Parse JSON subtree. All leaf-list and list instances of a node are considered one subtree. |
| * |
| * @param[in] lydctx JSON data parser context. |
| * @param[in] parent Data parent of the subtree, must be set if @p first is not. |
| * @param[in,out] first_p Pointer to the variable holding the first top-level sibling, must be set if @p parent is not. |
| * @param[in,out] parsed Optional set to add all the parsed siblings into. |
| * @return LY_ERR value. |
| */ |
| static LY_ERR |
| lydjson_subtree_r(struct lyd_json_ctx *lydctx, struct lyd_node *parent, struct lyd_node **first_p, struct ly_set *parsed) |
| { |
| LY_ERR ret = LY_SUCCESS, r; |
| enum LYJSON_PARSER_STATUS status = lyjson_ctx_status(lydctx->jsonctx, 0); |
| const char *name, *prefix = NULL, *expected = NULL; |
| size_t name_len, prefix_len = 0; |
| ly_bool is_meta = 0, parse_subtree; |
| const struct lysc_node *snode = NULL; |
| struct lysc_ext_instance *ext; |
| struct lyd_node *node = NULL, *attr_node = NULL; |
| const struct ly_ctx *ctx = lydctx->jsonctx->ctx; |
| char *value = NULL; |
| |
| assert(parent || first_p); |
| assert(status == LYJSON_OBJECT); |
| |
| parse_subtree = lydctx->parse_opts & LYD_PARSE_SUBTREE ? 1 : 0; |
| /* all descendants should be parsed */ |
| lydctx->parse_opts &= ~LYD_PARSE_SUBTREE; |
| |
| /* process the node name */ |
| lydjson_parse_name(lydctx->jsonctx->value, lydctx->jsonctx->value_len, &name, &name_len, &prefix, &prefix_len, &is_meta); |
| lyjson_ctx_give_dynamic_value(lydctx->jsonctx, &value); |
| |
| if (!is_meta || name_len || prefix_len) { |
| /* get the schema node */ |
| r = lydjson_get_snode(lydctx, is_meta, prefix, prefix_len, name, name_len, parent, &snode, &ext); |
| if (r == LY_ENOT) { |
| /* data parsed */ |
| goto cleanup; |
| } |
| LY_CHECK_ERR_GOTO(r, ret = r, cleanup); |
| |
| if (!snode) { |
| /* we will not be parsing it as metadata */ |
| is_meta = 0; |
| } |
| } |
| |
| if (is_meta) { |
| /* parse as metadata */ |
| if (!name_len && !prefix_len) { |
| /* parent's metadata without a name - use the schema from the parent */ |
| if (!parent) { |
| LOGVAL(ctx, LYVE_SYNTAX_JSON, |
| "Invalid metadata format - \"@\" can be used only inside anydata, container or list entries."); |
| ret = LY_EVALID; |
| goto cleanup; |
| } |
| attr_node = parent; |
| snode = attr_node->schema; |
| } |
| ret = lydjson_parse_attribute(lydctx, attr_node, snode, name, name_len, prefix, prefix_len, parent, &status, |
| first_p, &node); |
| LY_CHECK_GOTO(ret, cleanup); |
| } else if (!snode) { |
| /* parse as an opaq node */ |
| assert((lydctx->parse_opts & LYD_PARSE_OPAQ) || (lydctx->int_opts)); |
| |
| /* opaq node cannot have an empty string as the name. */ |
| if (name_len == 0) { |
| LOGVAL(lydctx->jsonctx->ctx, LYVE_SYNTAX_JSON, "A JSON object member name cannot be a zero-length string."); |
| ret = LY_EVALID; |
| goto cleanup; |
| } |
| |
| /* move to the second item in the name/X pair and parse opaq */ |
| ret = lydjson_ctx_next_parse_opaq(lydctx, name, name_len, prefix, prefix_len, parent, &status, first_p, &node); |
| LY_CHECK_GOTO(ret, cleanup); |
| } else { |
| /* parse as a standard lyd_node but it can still turn out to be an opaque node */ |
| |
| /* move to the second item in the name/X pair */ |
| LY_CHECK_GOTO(ret = lyjson_ctx_next(lydctx->jsonctx, &status), cleanup); |
| |
| /* first check the expected representation according to the nodetype and then continue with the content */ |
| switch (snode->nodetype) { |
| case LYS_LEAFLIST: |
| case LYS_LIST: |
| if (snode->nodetype == LYS_LEAFLIST) { |
| expected = "name/array of values"; |
| } else { |
| expected = "name/array of objects"; |
| } |
| |
| if (status == LYJSON_ARRAY_EMPTY) { |
| /* no instances, skip */ |
| break; |
| } |
| LY_CHECK_GOTO(status != LYJSON_ARRAY, representation_error); |
| |
| /* move into array */ |
| ret = lyjson_ctx_next(lydctx->jsonctx, &status); |
| LY_CHECK_GOTO(ret, cleanup); |
| |
| /* process all the values/objects */ |
| do { |
| ret = lydjson_parse_instance(lydctx, parent, first_p, snode, ext, name, name_len, prefix, prefix_len, |
| &status, &node); |
| if (ret == LY_ENOT) { |
| goto representation_error; |
| } else if (ret) { |
| goto cleanup; |
| } |
| lydjson_maintain_children(parent, first_p, &node, lydctx->parse_opts & LYD_PARSE_ORDERED ? 1 : 0, ext); |
| |
| /* move after the item(s) */ |
| LY_CHECK_GOTO(ret = lyjson_ctx_next(lydctx->jsonctx, &status), cleanup); |
| } while (status != LYJSON_ARRAY_CLOSED); |
| |
| break; |
| case LYS_LEAF: |
| case LYS_CONTAINER: |
| case LYS_NOTIF: |
| case LYS_ACTION: |
| case LYS_RPC: |
| case LYS_ANYDATA: |
| case LYS_ANYXML: |
| if (snode->nodetype & (LYS_LEAF | LYS_ANYXML)) { |
| if (status == LYJSON_ARRAY) { |
| expected = "name/[null]"; |
| } else { |
| expected = "name/value"; |
| } |
| } else { |
| expected = "name/object"; |
| } |
| |
| /* process the value/object */ |
| ret = lydjson_parse_instance(lydctx, parent, first_p, snode, ext, name, name_len, prefix, prefix_len, |
| &status, &node); |
| if (ret == LY_ENOT) { |
| goto representation_error; |
| } else if (ret) { |
| goto cleanup; |
| } |
| |
| if (snode->nodetype & (LYS_RPC | LYS_ACTION | LYS_NOTIF)) { |
| /* rememeber the RPC/action/notification */ |
| lydctx->op_node = node; |
| } |
| break; |
| } |
| } |
| |
| /* finally connect the parsed node */ |
| lydjson_maintain_children(parent, first_p, &node, lydctx->parse_opts & LYD_PARSE_ORDERED ? 1 : 0, ext); |
| |
| /* rememeber a successfully parsed node */ |
| if (parsed && node) { |
| ly_set_add(parsed, node, 1, NULL); |
| } |
| |
| if (!parse_subtree) { |
| /* move after the item(s) */ |
| LY_CHECK_GOTO(ret = lyjson_ctx_next(lydctx->jsonctx, &status), cleanup); |
| } |
| |
| /* success */ |
| goto cleanup; |
| |
| representation_error: |
| LOGVAL(ctx, LYVE_SYNTAX_JSON, "The %s \"%s\" is expected to be represented as JSON %s, but input data contains name/%s.", |
| lys_nodetype2str(snode->nodetype), snode->name, expected, lyjson_token2str(status)); |
| ret = LY_EVALID; |
| |
| cleanup: |
| free(value); |
| lyd_free_tree(node); |
| return ret; |
| } |
| |
| /** |
| * @brief Common start of JSON parser processing different types of the input data. |
| * |
| * @param[in] ctx libyang context |
| * @param[in] in Input structure. |
| * @param[in] parse_opts Options for parser, see @ref dataparseroptions. |
| * @param[in] val_opts Options for the validation phase, see @ref datavalidationoptions. |
| * @param[out] lydctx_p Data parser context to finish validation. |
| * @param[out] status Storage for the current context's status |
| * @return LY_ERR value. |
| */ |
| static LY_ERR |
| lyd_parse_json_init(const struct ly_ctx *ctx, struct ly_in *in, uint32_t parse_opts, uint32_t val_opts, |
| struct lyd_json_ctx **lydctx_p, enum LYJSON_PARSER_STATUS *status) |
| { |
| LY_ERR ret = LY_SUCCESS; |
| struct lyd_json_ctx *lydctx; |
| size_t i; |
| ly_bool subtree; |
| |
| assert(lydctx_p); |
| assert(status); |
| |
| /* init context */ |
| lydctx = calloc(1, sizeof *lydctx); |
| LY_CHECK_ERR_RET(!lydctx, LOGMEM(ctx), LY_EMEM); |
| lydctx->parse_opts = parse_opts; |
| lydctx->val_opts = val_opts; |
| lydctx->free = lyd_json_ctx_free; |
| |
| /* starting top-level */ |
| for (i = 0; in->current[i] != '\0' && is_jsonws(in->current[i]); i++) { |
| if (in->current[i] == '\n') { |
| /* new line */ |
| LY_IN_NEW_LINE(in); |
| } |
| } |
| |
| subtree = (parse_opts & LYD_PARSE_SUBTREE) ? 1 : 0; |
| LY_CHECK_ERR_RET(ret = lyjson_ctx_new(ctx, in, subtree, &lydctx->jsonctx), free(lydctx), ret); |
| *status = lyjson_ctx_status(lydctx->jsonctx, 0); |
| |
| if ((*status == LYJSON_END) || (*status == LYJSON_OBJECT_EMPTY) || (*status == LYJSON_OBJECT)) { |
| *lydctx_p = lydctx; |
| return LY_SUCCESS; |
| } else { |
| /* expecting top-level object */ |
| LOGVAL(ctx, LYVE_SYNTAX_JSON, "Expected top-level JSON object, but %s found.", lyjson_token2str(*status)); |
| *lydctx_p = NULL; |
| lyd_json_ctx_free((struct lyd_ctx *)lydctx); |
| return LY_EVALID; |
| } |
| } |
| |
| LY_ERR |
| lyd_parse_json(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 ly_set *parsed, ly_bool *subtree_sibling, struct lyd_ctx **lydctx_p) |
| { |
| LY_ERR rc = LY_SUCCESS; |
| struct lyd_json_ctx *lydctx = NULL; |
| enum LYJSON_PARSER_STATUS status; |
| uint32_t int_opts = 0; |
| |
| rc = lyd_parse_json_init(ctx, in, parse_opts, val_opts, &lydctx, &status); |
| LY_CHECK_GOTO(rc || status == LYJSON_END || status == LYJSON_OBJECT_EMPTY, cleanup); |
| |
| assert(status == LYJSON_OBJECT); |
| |
| switch (data_type) { |
| case LYD_TYPE_DATA_YANG: |
| if (!(parse_opts & LYD_PARSE_SUBTREE)) { |
| int_opts = LYD_INTOPT_WITH_SIBLINGS; |
| } |
| break; |
| case LYD_TYPE_RPC_YANG: |
| int_opts = LYD_INTOPT_RPC | LYD_INTOPT_ACTION | LYD_INTOPT_NO_SIBLINGS; |
| break; |
| case LYD_TYPE_NOTIF_YANG: |
| int_opts = LYD_INTOPT_NOTIF | LYD_INTOPT_NO_SIBLINGS; |
| break; |
| case LYD_TYPE_REPLY_YANG: |
| int_opts = LYD_INTOPT_REPLY | LYD_INTOPT_NO_SIBLINGS; |
| break; |
| default: |
| LOGINT(ctx); |
| rc = LY_EINT; |
| goto cleanup; |
| } |
| lydctx->int_opts = int_opts; |
| 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); |
| |
| /* read subtree(s) */ |
| while (lydctx->jsonctx->in->current[0] && (status != LYJSON_OBJECT_CLOSED)) { |
| rc = lydjson_subtree_r(lydctx, parent, first_p, parsed); |
| LY_CHECK_GOTO(rc, cleanup); |
| |
| status = lyjson_ctx_status(lydctx->jsonctx, 0); |
| |
| if (!(int_opts & LYD_INTOPT_WITH_SIBLINGS)) { |
| break; |
| } |
| } |
| |
| if ((int_opts & LYD_INTOPT_NO_SIBLINGS) && lydctx->jsonctx->in->current[0] && |
| (lyjson_ctx_status(lydctx->jsonctx, 0) != LYJSON_OBJECT_CLOSED)) { |
| 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; |
| } |
| |
| /* finish linking metadata */ |
| rc = lydjson_metadata_finish(lydctx, parent ? lyd_node_child_p(parent) : first_p); |
| LY_CHECK_GOTO(rc, cleanup); |
| |
| if (parse_opts & LYD_PARSE_SUBTREE) { |
| /* check for a sibling object */ |
| assert(subtree_sibling); |
| if (lydctx->jsonctx->in->current[0] == ',') { |
| *subtree_sibling = 1; |
| |
| /* move to the next object */ |
| ly_in_skip(lydctx->jsonctx->in, 1); |
| } else { |
| *subtree_sibling = 0; |
| } |
| } |
| |
| cleanup: |
| /* there should be no unresolved types stored */ |
| assert(!(parse_opts & LYD_PARSE_ONLY) || !lydctx || (!lydctx->node_types.count && !lydctx->meta_types.count && |
| !lydctx->node_when.count)); |
| |
| if (rc) { |
| lyd_json_ctx_free((struct lyd_ctx *)lydctx); |
| } else { |
| *lydctx_p = (struct lyd_ctx *)lydctx; |
| |
| /* the JSON context is no more needed, freeing it also stops logging line numbers which would be confusing now */ |
| lyjson_ctx_free(lydctx->jsonctx); |
| lydctx->jsonctx = NULL; |
| } |
| return rc; |
| } |