diff options
Diffstat (limited to 'src/tree_data_new.c')
| -rw-r--r-- | src/tree_data_new.c | 1914 |
1 files changed, 1914 insertions, 0 deletions
diff --git a/src/tree_data_new.c b/src/tree_data_new.c new file mode 100644 index 0000000..752b181 --- /dev/null +++ b/src/tree_data_new.c @@ -0,0 +1,1914 @@ +/** + * @file tree_data_new.c + * @author Radek Krejci <rkrejci@cesnet.cz> + * @author Michal Vasko <mvasko@cesnet.cz> + * @brief Data tree new functions + * + * Copyright (c) 2015 - 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 <ctype.h> +#include <inttypes.h> +#include <stdarg.h> +#include <stdint.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +#include "common.h" +#include "compat.h" +#include "context.h" +#include "dict.h" +#include "diff.h" +#include "hash_table.h" +#include "in.h" +#include "in_internal.h" +#include "log.h" +#include "parser_data.h" +#include "parser_internal.h" +#include "path.h" +#include "plugins.h" +#include "plugins_exts/metadata.h" +#include "plugins_internal.h" +#include "plugins_types.h" +#include "set.h" +#include "tree.h" +#include "tree_data_internal.h" +#include "tree_edit.h" +#include "tree_schema.h" +#include "tree_schema_internal.h" +#include "validation.h" +#include "xml.h" +#include "xpath.h" + +LY_ERR +lyd_create_term(const struct lysc_node *schema, const char *value, size_t value_len, ly_bool *dynamic, + LY_VALUE_FORMAT format, void *prefix_data, uint32_t hints, ly_bool *incomplete, struct lyd_node **node) +{ + LY_ERR ret; + struct lyd_node_term *term; + + assert(schema->nodetype & LYD_NODE_TERM); + + term = calloc(1, sizeof *term); + LY_CHECK_ERR_RET(!term, LOGMEM(schema->module->ctx), LY_EMEM); + + term->schema = schema; + term->prev = &term->node; + term->flags = LYD_NEW; + + LOG_LOCSET(schema, NULL, NULL, NULL); + ret = lyd_value_store(schema->module->ctx, &term->value, ((struct lysc_node_leaf *)term->schema)->type, value, + value_len, dynamic, format, prefix_data, hints, schema, incomplete); + LOG_LOCBACK(1, 0, 0, 0); + LY_CHECK_ERR_RET(ret, free(term), ret); + lyd_hash(&term->node); + + *node = &term->node; + return ret; +} + +LY_ERR +lyd_create_term2(const struct lysc_node *schema, const struct lyd_value *val, struct lyd_node **node) +{ + LY_ERR ret; + struct lyd_node_term *term; + struct lysc_type *type; + + assert(schema->nodetype & LYD_NODE_TERM); + assert(val && val->realtype); + + term = calloc(1, sizeof *term); + LY_CHECK_ERR_RET(!term, LOGMEM(schema->module->ctx), LY_EMEM); + + term->schema = schema; + term->prev = &term->node; + term->flags = LYD_NEW; + + type = ((struct lysc_node_leaf *)schema)->type; + ret = type->plugin->duplicate(schema->module->ctx, val, &term->value); + if (ret) { + LOGERR(schema->module->ctx, ret, "Value duplication failed."); + free(term); + return ret; + } + lyd_hash(&term->node); + + *node = &term->node; + return ret; +} + +LY_ERR +lyd_create_inner(const struct lysc_node *schema, struct lyd_node **node) +{ + struct lyd_node_inner *in; + + assert(schema->nodetype & LYD_NODE_INNER); + + in = calloc(1, sizeof *in); + LY_CHECK_ERR_RET(!in, LOGMEM(schema->module->ctx), LY_EMEM); + + in->schema = schema; + in->prev = &in->node; + in->flags = LYD_NEW; + if ((schema->nodetype == LYS_CONTAINER) && !(schema->flags & LYS_PRESENCE)) { + in->flags |= LYD_DEFAULT; + } + + /* do not hash list with keys, we need them for the hash */ + if ((schema->nodetype != LYS_LIST) || (schema->flags & LYS_KEYLESS)) { + lyd_hash(&in->node); + } + + *node = &in->node; + return LY_SUCCESS; +} + +LY_ERR +lyd_create_list(const struct lysc_node *schema, const struct ly_path_predicate *predicates, struct lyd_node **node) +{ + LY_ERR ret = LY_SUCCESS; + struct lyd_node *list = NULL, *key; + LY_ARRAY_COUNT_TYPE u; + + assert((schema->nodetype == LYS_LIST) && !(schema->flags & LYS_KEYLESS)); + + /* create list */ + LY_CHECK_GOTO(ret = lyd_create_inner(schema, &list), cleanup); + + LOG_LOCSET(schema, NULL, NULL, NULL); + + /* create and insert all the keys */ + LY_ARRAY_FOR(predicates, u) { + LY_CHECK_GOTO(ret = lyd_create_term2(predicates[u].key, &predicates[u].value, &key), cleanup); + lyd_insert_node(list, NULL, key, 0); + } + + /* hash having all the keys */ + lyd_hash(list); + + /* success */ + *node = list; + list = NULL; + +cleanup: + LOG_LOCBACK(1, 0, 0, 0); + lyd_free_tree(list); + return ret; +} + +LY_ERR +lyd_create_list2(const struct lysc_node *schema, const char *keys, size_t keys_len, struct lyd_node **node) +{ + LY_ERR ret = LY_SUCCESS; + struct lyxp_expr *expr = NULL; + uint32_t exp_idx = 0; + enum ly_path_pred_type pred_type = 0; + struct ly_path_predicate *predicates = NULL; + + LOG_LOCSET(schema, NULL, NULL, NULL); + + /* parse keys */ + LY_CHECK_GOTO(ret = ly_path_parse_predicate(schema->module->ctx, NULL, keys, keys_len, LY_PATH_PREFIX_OPTIONAL, + LY_PATH_PRED_KEYS, &expr), cleanup); + + /* compile them */ + LY_CHECK_GOTO(ret = ly_path_compile_predicate(schema->module->ctx, NULL, NULL, schema, expr, &exp_idx, LY_VALUE_JSON, + NULL, &predicates, &pred_type), cleanup); + + /* create the list node */ + LY_CHECK_GOTO(ret = lyd_create_list(schema, predicates, node), cleanup); + +cleanup: + LOG_LOCBACK(1, 0, 0, 0); + lyxp_expr_free(schema->module->ctx, expr); + ly_path_predicates_free(schema->module->ctx, pred_type, predicates); + return ret; +} + +/** + * @brief Convert an anydata value into a datatree. + * + * @param[in] ctx libyang context. + * @param[in] value Anydata value. + * @param[in] value_type Anydata @p value type. + * @param[out] tree Parsed data tree. + * @return LY_ERR value. + */ +static LY_ERR +lyd_create_anydata_datatree(const struct ly_ctx *ctx, const void *value, LYD_ANYDATA_VALUETYPE value_type, + struct lyd_node **tree) +{ + LY_ERR r; + struct ly_in *in = NULL; + struct lyd_ctx *lydctx = NULL; + uint32_t parse_opts, int_opts; + + *tree = NULL; + + if (!value) { + /* empty data tree no matter the value type */ + return LY_SUCCESS; + } + + if (value_type == LYD_ANYDATA_STRING) { + /* detect format */ + if (((char *)value)[0] == '<') { + value_type = LYD_ANYDATA_XML; + } else if (((char *)value)[0] == '{') { + value_type = LYD_ANYDATA_JSON; + } else if (!strncmp(value, "lyb", 3)) { + value_type = LYD_ANYDATA_LYB; + } else { + LOGERR(ctx, LY_EINVAL, "Invalid string value of an anydata node."); + return LY_EINVAL; + } + } + + /* create input */ + LY_CHECK_RET(ly_in_new_memory(value, &in)); + + /* set options */ + parse_opts = LYD_PARSE_ONLY | LYD_PARSE_OPAQ; + int_opts = LYD_INTOPT_ANY | LYD_INTOPT_WITH_SIBLINGS; + + switch (value_type) { + case LYD_ANYDATA_DATATREE: + case LYD_ANYDATA_STRING: + /* unreachable */ + ly_in_free(in, 0); + LOGINT_RET(ctx); + case LYD_ANYDATA_XML: + r = lyd_parse_xml(ctx, NULL, NULL, tree, in, parse_opts, 0, int_opts, NULL, NULL, &lydctx); + break; + case LYD_ANYDATA_JSON: + r = lyd_parse_json(ctx, NULL, NULL, tree, in, parse_opts, 0, int_opts, NULL, NULL, &lydctx); + break; + case LYD_ANYDATA_LYB: + r = lyd_parse_lyb(ctx, NULL, NULL, tree, in, parse_opts | LYD_PARSE_STRICT, 0, int_opts, NULL, NULL, &lydctx); + break; + } + if (lydctx) { + lydctx->free(lydctx); + } + ly_in_free(in, 0); + + if (r) { + LOGERR(ctx, LY_EINVAL, "Failed to parse anydata content into a data tree."); + return LY_EINVAL; + } + return LY_SUCCESS; +} + +LY_ERR +lyd_create_any(const struct lysc_node *schema, const void *value, LYD_ANYDATA_VALUETYPE value_type, ly_bool use_value, + struct lyd_node **node) +{ + LY_ERR ret; + struct lyd_node *tree; + struct lyd_node_any *any = NULL; + union lyd_any_value any_val; + + assert(schema->nodetype & LYD_NODE_ANY); + + any = calloc(1, sizeof *any); + LY_CHECK_ERR_RET(!any, LOGMEM(schema->module->ctx), LY_EMEM); + + any->schema = schema; + any->prev = &any->node; + any->flags = LYD_NEW; + + if ((schema->nodetype == LYS_ANYDATA) && (value_type != LYD_ANYDATA_DATATREE)) { + /* only a data tree can be stored */ + LY_CHECK_GOTO(ret = lyd_create_anydata_datatree(schema->module->ctx, value, value_type, &tree), error); + if (use_value) { + free((void *)value); + } + use_value = 1; + value = tree; + value_type = LYD_ANYDATA_DATATREE; + } + + if (use_value) { + switch (value_type) { + case LYD_ANYDATA_DATATREE: + any->value.tree = (void *)value; + break; + case LYD_ANYDATA_STRING: + case LYD_ANYDATA_XML: + case LYD_ANYDATA_JSON: + LY_CHECK_GOTO(ret = lydict_insert_zc(schema->module->ctx, (void *)value, &any->value.str), error); + break; + case LYD_ANYDATA_LYB: + any->value.mem = (void *)value; + break; + } + any->value_type = value_type; + } else { + any_val.str = value; + LY_CHECK_GOTO(ret = lyd_any_copy_value(&any->node, &any_val, value_type), error); + } + lyd_hash(&any->node); + + *node = &any->node; + return LY_SUCCESS; + +error: + free(any); + return ret; +} + +LY_ERR +lyd_create_opaq(const struct ly_ctx *ctx, const char *name, size_t name_len, const char *prefix, size_t pref_len, + const char *module_key, size_t module_key_len, const char *value, size_t value_len, ly_bool *dynamic, + LY_VALUE_FORMAT format, void *val_prefix_data, uint32_t hints, struct lyd_node **node) +{ + LY_ERR ret = LY_SUCCESS; + struct lyd_node_opaq *opaq; + + assert(ctx && name && name_len && format); + + if (!value_len && (!dynamic || !*dynamic)) { + value = ""; + } + + opaq = calloc(1, sizeof *opaq); + LY_CHECK_ERR_GOTO(!opaq, LOGMEM(ctx); ret = LY_EMEM, finish); + + opaq->prev = &opaq->node; + LY_CHECK_GOTO(ret = lydict_insert(ctx, name, name_len, &opaq->name.name), finish); + + if (pref_len) { + LY_CHECK_GOTO(ret = lydict_insert(ctx, prefix, pref_len, &opaq->name.prefix), finish); + } + if (module_key_len) { + LY_CHECK_GOTO(ret = lydict_insert(ctx, module_key, module_key_len, &opaq->name.module_ns), finish); + } + if (dynamic && *dynamic) { + LY_CHECK_GOTO(ret = lydict_insert_zc(ctx, (char *)value, &opaq->value), finish); + *dynamic = 0; + } else { + LY_CHECK_GOTO(ret = lydict_insert(ctx, value, value_len, &opaq->value), finish); + } + + opaq->format = format; + opaq->val_prefix_data = val_prefix_data; + opaq->hints = hints; + opaq->ctx = ctx; + +finish: + if (ret) { + lyd_free_tree(&opaq->node); + ly_free_prefix_data(format, val_prefix_data); + } else { + *node = &opaq->node; + } + return ret; +} + +LIBYANG_API_DEF LY_ERR +lyd_new_inner(struct lyd_node *parent, const struct lys_module *module, const char *name, ly_bool output, + struct lyd_node **node) +{ + LY_ERR r; + struct lyd_node *ret = NULL; + const struct lysc_node *schema; + struct lysc_ext_instance *ext = NULL; + const struct ly_ctx *ctx = parent ? LYD_CTX(parent) : (module ? module->ctx : NULL); + + LY_CHECK_ARG_RET(ctx, parent || module, parent || node, name, LY_EINVAL); + LY_CHECK_CTX_EQUAL_RET(parent ? LYD_CTX(parent) : NULL, module ? module->ctx : NULL, LY_EINVAL); + + if (!module) { + module = parent->schema->module; + } + + schema = lys_find_child(parent ? parent->schema : NULL, module, name, 0, + LYS_CONTAINER | LYS_NOTIF | LYS_RPC | LYS_ACTION, output ? LYS_GETNEXT_OUTPUT : 0); + if (!schema && parent) { + r = ly_nested_ext_schema(parent, NULL, module->name, strlen(module->name), LY_VALUE_JSON, NULL, name, + strlen(name), &schema, &ext); + LY_CHECK_RET(r && (r != LY_ENOT), r); + } + LY_CHECK_ERR_RET(!schema, LOGERR(ctx, LY_EINVAL, "Inner node (container, notif, RPC, or action) \"%s\" not found.", + name), LY_ENOTFOUND); + + LY_CHECK_RET(lyd_create_inner(schema, &ret)); + if (ext) { + ret->flags |= LYD_EXT; + } + if (parent) { + lyd_insert_node(parent, NULL, ret, 0); + } + + if (node) { + *node = ret; + } + return LY_SUCCESS; +} + +LIBYANG_API_DEF LY_ERR +lyd_new_ext_inner(const struct lysc_ext_instance *ext, const char *name, struct lyd_node **node) +{ + struct lyd_node *ret = NULL; + const struct lysc_node *schema; + struct ly_ctx *ctx = ext ? ext->module->ctx : NULL; + + LY_CHECK_ARG_RET(ctx, ext, node, name, LY_EINVAL); + + schema = lysc_ext_find_node(ext, NULL, name, 0, LYS_CONTAINER | LYS_NOTIF | LYS_RPC | LYS_ACTION, 0); + if (!schema) { + if (ext->argument) { + LOGERR(ctx, LY_EINVAL, "Inner node (not a list) \"%s\" not found in instance \"%s\" of extension %s.", + name, ext->argument, ext->def->name); + } else { + LOGERR(ctx, LY_EINVAL, "Inner node (not a list) \"%s\" not found in instance of extension %s.", + name, ext->def->name); + } + return LY_ENOTFOUND; + } + LY_CHECK_RET(lyd_create_inner(schema, &ret)); + + *node = ret; + + return LY_SUCCESS; +} + +/** + * @brief Create a new list node in the data tree. + * + * @param[in] parent Parent node for the node being created. NULL in case of creating a top level element. + * @param[in] module Module of the node being created. If NULL, @p parent module will be used. + * @param[in] name Schema node name of the new data node. The node must be #LYS_LIST. + * @param[in] format Format of key values. + * @param[in] output Flag in case the @p parent is RPC/Action. If value is 0, the input's data nodes of the RPC/Action are + * taken into consideration. Otherwise, the output's data node is going to be created. + * @param[out] node Optional created node. + * @param[in] ap Ordered key values of the new list instance, all must be set. For ::LY_VALUE_LYB, every value must + * be followed by the value length. + * @return LY_ERR value. + */ +static LY_ERR +_lyd_new_list(struct lyd_node *parent, const struct lys_module *module, const char *name, LY_VALUE_FORMAT format, + ly_bool output, struct lyd_node **node, va_list ap) +{ + struct lyd_node *ret = NULL, *key; + const struct lysc_node *schema, *key_s; + struct lysc_ext_instance *ext = NULL; + const struct ly_ctx *ctx = parent ? LYD_CTX(parent) : (module ? module->ctx : NULL); + const void *key_val; + uint32_t key_len; + LY_ERR r, rc = LY_SUCCESS; + + LY_CHECK_ARG_RET(ctx, parent || module, parent || node, name, LY_EINVAL); + LY_CHECK_CTX_EQUAL_RET(parent ? LYD_CTX(parent) : NULL, module ? module->ctx : NULL, LY_EINVAL); + + if (!module) { + module = parent->schema->module; + } + + schema = lys_find_child(parent ? parent->schema : NULL, module, name, 0, LYS_LIST, output ? LYS_GETNEXT_OUTPUT : 0); + if (!schema && parent) { + r = ly_nested_ext_schema(parent, NULL, module->name, strlen(module->name), LY_VALUE_JSON, NULL, name, + strlen(name), &schema, &ext); + LY_CHECK_RET(r && (r != LY_ENOT), r); + } + LY_CHECK_ERR_RET(!schema, LOGERR(ctx, LY_EINVAL, "List node \"%s\" not found.", name), LY_ENOTFOUND); + + /* create list inner node */ + LY_CHECK_RET(lyd_create_inner(schema, &ret)); + + /* create and insert all the keys */ + for (key_s = lysc_node_child(schema); key_s && (key_s->flags & LYS_KEY); key_s = key_s->next) { + if (format == LY_VALUE_LYB) { + key_val = va_arg(ap, const void *); + key_len = va_arg(ap, uint32_t); + } else { + key_val = va_arg(ap, const char *); + key_len = key_val ? strlen((char *)key_val) : 0; + } + + rc = lyd_create_term(key_s, key_val, key_len, NULL, format, NULL, LYD_HINT_DATA, NULL, &key); + LY_CHECK_GOTO(rc, cleanup); + lyd_insert_node(ret, NULL, key, 1); + } + + if (ext) { + ret->flags |= LYD_EXT; + } + if (parent) { + lyd_insert_node(parent, NULL, ret, 0); + } + +cleanup: + if (rc) { + lyd_free_tree(ret); + ret = NULL; + } else if (node) { + *node = ret; + } + return rc; +} + +LIBYANG_API_DEF LY_ERR +lyd_new_list(struct lyd_node *parent, const struct lys_module *module, const char *name, ly_bool output, + struct lyd_node **node, ...) +{ + LY_ERR rc; + va_list ap; + + va_start(ap, node); + + rc = _lyd_new_list(parent, module, name, LY_VALUE_JSON, output, node, ap); + + va_end(ap); + return rc; +} + +LIBYANG_API_DEF LY_ERR +lyd_new_list_bin(struct lyd_node *parent, const struct lys_module *module, const char *name, ly_bool output, + struct lyd_node **node, ...) +{ + LY_ERR rc; + va_list ap; + + va_start(ap, node); + + rc = _lyd_new_list(parent, module, name, LY_VALUE_LYB, output, node, ap); + + va_end(ap); + return rc; +} + +LIBYANG_API_DEF LY_ERR +lyd_new_list_canon(struct lyd_node *parent, const struct lys_module *module, const char *name, ly_bool output, + struct lyd_node **node, ...) +{ + LY_ERR rc; + va_list ap; + + va_start(ap, node); + + rc = _lyd_new_list(parent, module, name, LY_VALUE_CANON, output, node, ap); + + va_end(ap); + return rc; +} + +LIBYANG_API_DEF LY_ERR +lyd_new_ext_list(const struct lysc_ext_instance *ext, const char *name, struct lyd_node **node, ...) +{ + struct lyd_node *ret = NULL, *key; + const struct lysc_node *schema, *key_s; + struct ly_ctx *ctx = ext ? ext->module->ctx : NULL; + va_list ap; + const char *key_val; + LY_ERR rc = LY_SUCCESS; + + LY_CHECK_ARG_RET(ctx, ext, node, name, LY_EINVAL); + + schema = lysc_ext_find_node(ext, NULL, name, 0, LYS_LIST, 0); + if (!schema) { + if (ext->argument) { + LOGERR(ctx, LY_EINVAL, "List node \"%s\" not found in instance \"%s\" of extension %s.", + name, ext->argument, ext->def->name); + } else { + LOGERR(ctx, LY_EINVAL, "List node \"%s\" not found in instance of extension %s.", name, ext->def->name); + } + return LY_ENOTFOUND; + } + /* create list inner node */ + LY_CHECK_RET(lyd_create_inner(schema, &ret)); + + va_start(ap, node); + + /* create and insert all the keys */ + for (key_s = lysc_node_child(schema); key_s && (key_s->flags & LYS_KEY); key_s = key_s->next) { + key_val = va_arg(ap, const char *); + + rc = lyd_create_term(key_s, key_val, key_val ? strlen(key_val) : 0, NULL, LY_VALUE_JSON, NULL, LYD_HINT_DATA, + NULL, &key); + LY_CHECK_GOTO(rc, cleanup); + lyd_insert_node(ret, NULL, key, 1); + } + +cleanup: + va_end(ap); + if (rc) { + lyd_free_tree(ret); + ret = NULL; + } + *node = ret; + return rc; +} + +LIBYANG_API_DEF LY_ERR +lyd_new_list2(struct lyd_node *parent, const struct lys_module *module, const char *name, const char *keys, + ly_bool output, struct lyd_node **node) +{ + LY_ERR r; + struct lyd_node *ret = NULL; + const struct lysc_node *schema; + struct lysc_ext_instance *ext = NULL; + const struct ly_ctx *ctx = parent ? LYD_CTX(parent) : (module ? module->ctx : NULL); + + LY_CHECK_ARG_RET(ctx, parent || module, parent || node, name, LY_EINVAL); + LY_CHECK_CTX_EQUAL_RET(parent ? LYD_CTX(parent) : NULL, module ? module->ctx : NULL, LY_EINVAL); + + if (!module) { + module = parent->schema->module; + } + if (!keys) { + keys = ""; + } + + /* find schema node */ + schema = lys_find_child(parent ? parent->schema : NULL, module, name, 0, LYS_LIST, output ? LYS_GETNEXT_OUTPUT : 0); + if (!schema && parent) { + r = ly_nested_ext_schema(parent, NULL, module->name, strlen(module->name), LY_VALUE_JSON, NULL, name, strlen(name), + &schema, &ext); + LY_CHECK_RET(r && (r != LY_ENOT), r); + } + LY_CHECK_ERR_RET(!schema, LOGERR(ctx, LY_EINVAL, "List node \"%s\" not found.", name), LY_ENOTFOUND); + + if ((schema->flags & LYS_KEYLESS) && !keys[0]) { + /* key-less list */ + LY_CHECK_RET(lyd_create_inner(schema, &ret)); + } else { + /* create the list node */ + LY_CHECK_RET(lyd_create_list2(schema, keys, strlen(keys), &ret)); + } + if (ext) { + ret->flags |= LYD_EXT; + } + if (parent) { + lyd_insert_node(parent, NULL, ret, 0); + } + + if (node) { + *node = ret; + } + return LY_SUCCESS; +} + +/** + * @brief Create a new term node in the data tree. + * + * @param[in] parent Parent node for the node being created. NULL in case of creating a top level element. + * @param[in] module Module of the node being created. If NULL, @p parent module will be used. + * @param[in] name Schema node name of the new data node. The node can be ::LYS_LEAF or ::LYS_LEAFLIST. + * @param[in] value Value of the node being created. + * @param[in] value_len Length of @p value. + * @param[in] format Format of @p value. + * @param[in] output Flag in case the @p parent is RPC/Action. If value is 0, the input's data nodes of the RPC/Action are + * taken into consideration. Otherwise, the output's data node is going to be created. + * @param[out] node Optional created node. + * @return LY_ERR value. + */ +static LY_ERR +_lyd_new_term(struct lyd_node *parent, const struct lys_module *module, const char *name, const void *value, + size_t value_len, LY_VALUE_FORMAT format, ly_bool output, struct lyd_node **node) +{ + LY_ERR r; + struct lyd_node *ret = NULL; + const struct lysc_node *schema; + struct lysc_ext_instance *ext = NULL; + const struct ly_ctx *ctx = parent ? LYD_CTX(parent) : (module ? module->ctx : NULL); + + LY_CHECK_ARG_RET(ctx, parent || module, parent || node, name, LY_EINVAL); + LY_CHECK_CTX_EQUAL_RET(parent ? LYD_CTX(parent) : NULL, module ? module->ctx : NULL, LY_EINVAL); + + if (!module) { + module = parent->schema->module; + } + + schema = lys_find_child(parent ? parent->schema : NULL, module, name, 0, LYD_NODE_TERM, output ? LYS_GETNEXT_OUTPUT : 0); + if (!schema && parent) { + r = ly_nested_ext_schema(parent, NULL, module->name, strlen(module->name), LY_VALUE_JSON, NULL, name, + strlen(name), &schema, &ext); + LY_CHECK_RET(r && (r != LY_ENOT), r); + } + LY_CHECK_ERR_RET(!schema, LOGERR(ctx, LY_EINVAL, "Term node \"%s\" not found.", name), LY_ENOTFOUND); + + LY_CHECK_RET(lyd_create_term(schema, value, value_len, NULL, format, NULL, LYD_HINT_DATA, NULL, &ret)); + if (ext) { + ret->flags |= LYD_EXT; + } + if (parent) { + lyd_insert_node(parent, NULL, ret, 0); + } + + if (node) { + *node = ret; + } + return LY_SUCCESS; +} + +LIBYANG_API_DEF LY_ERR +lyd_new_term(struct lyd_node *parent, const struct lys_module *module, const char *name, const char *val_str, + ly_bool output, struct lyd_node **node) +{ + return _lyd_new_term(parent, module, name, val_str, val_str ? strlen(val_str) : 0, LY_VALUE_JSON, output, node); +} + +LIBYANG_API_DEF LY_ERR +lyd_new_term_bin(struct lyd_node *parent, const struct lys_module *module, const char *name, const void *value, + size_t value_len, ly_bool output, struct lyd_node **node) +{ + return _lyd_new_term(parent, module, name, value, value_len, LY_VALUE_LYB, output, node); +} + +LIBYANG_API_DEF LY_ERR +lyd_new_term_canon(struct lyd_node *parent, const struct lys_module *module, const char *name, const char *val_str, + ly_bool output, struct lyd_node **node) +{ + return _lyd_new_term(parent, module, name, val_str, val_str ? strlen(val_str) : 0, LY_VALUE_CANON, output, node); +} + +LIBYANG_API_DEF LY_ERR +lyd_new_ext_term(const struct lysc_ext_instance *ext, const char *name, const char *val_str, struct lyd_node **node) +{ + LY_ERR rc; + struct lyd_node *ret = NULL; + const struct lysc_node *schema; + struct ly_ctx *ctx = ext ? ext->module->ctx : NULL; + + LY_CHECK_ARG_RET(ctx, ext, node, name, LY_EINVAL); + + schema = lysc_ext_find_node(ext, NULL, name, 0, LYD_NODE_TERM, 0); + if (!schema) { + if (ext->argument) { + LOGERR(ctx, LY_EINVAL, "Term node \"%s\" not found in instance \"%s\" of extension %s.", + name, ext->argument, ext->def->name); + } else { + LOGERR(ctx, LY_EINVAL, "Term node \"%s\" not found in instance of extension %s.", name, ext->def->name); + } + return LY_ENOTFOUND; + } + rc = lyd_create_term(schema, val_str, val_str ? strlen(val_str) : 0, NULL, LY_VALUE_JSON, NULL, LYD_HINT_DATA, NULL, &ret); + LY_CHECK_RET(rc); + + *node = ret; + + return LY_SUCCESS; +} + +LIBYANG_API_DEF LY_ERR +lyd_new_any(struct lyd_node *parent, const struct lys_module *module, const char *name, const void *value, + ly_bool use_value, LYD_ANYDATA_VALUETYPE value_type, ly_bool output, struct lyd_node **node) +{ + LY_ERR r; + struct lyd_node *ret = NULL; + const struct lysc_node *schema; + struct lysc_ext_instance *ext = NULL; + const struct ly_ctx *ctx = parent ? LYD_CTX(parent) : (module ? module->ctx : NULL); + + LY_CHECK_ARG_RET(ctx, parent || module, parent || node, name, LY_EINVAL); + LY_CHECK_CTX_EQUAL_RET(parent ? LYD_CTX(parent) : NULL, module ? module->ctx : NULL, LY_EINVAL); + + if (!module) { + module = parent->schema->module; + } + + schema = lys_find_child(parent ? parent->schema : NULL, module, name, 0, LYD_NODE_ANY, output ? LYS_GETNEXT_OUTPUT : 0); + if (!schema && parent) { + r = ly_nested_ext_schema(parent, NULL, module->name, strlen(module->name), LY_VALUE_JSON, NULL, name, + strlen(name), &schema, &ext); + LY_CHECK_RET(r && (r != LY_ENOT), r); + } + LY_CHECK_ERR_RET(!schema, LOGERR(ctx, LY_EINVAL, "Any node \"%s\" not found.", name), LY_ENOTFOUND); + + LY_CHECK_RET(lyd_create_any(schema, value, value_type, use_value, &ret)); + if (ext) { + ret->flags |= LYD_EXT; + } + if (parent) { + lyd_insert_node(parent, NULL, ret, 0); + } + + if (node) { + *node = ret; + } + return LY_SUCCESS; +} + +LIBYANG_API_DEF LY_ERR +lyd_new_ext_any(const struct lysc_ext_instance *ext, const char *name, const void *value, ly_bool use_value, + LYD_ANYDATA_VALUETYPE value_type, struct lyd_node **node) +{ + struct lyd_node *ret = NULL; + const struct lysc_node *schema; + struct ly_ctx *ctx = ext ? ext->module->ctx : NULL; + + LY_CHECK_ARG_RET(ctx, ext, node, name, LY_EINVAL); + + schema = lysc_ext_find_node(ext, NULL, name, 0, LYD_NODE_ANY, 0); + if (!schema) { + if (ext->argument) { + LOGERR(ctx, LY_EINVAL, "Any node \"%s\" not found in instance \"%s\" of extension %s.", + name, ext->argument, ext->def->name); + } else { + LOGERR(ctx, LY_EINVAL, "Any node \"%s\" not found in instance of extension %s.", name, ext->def->name); + } + return LY_ENOTFOUND; + } + LY_CHECK_RET(lyd_create_any(schema, value, value_type, use_value, &ret)); + + *node = ret; + + return LY_SUCCESS; +} + +LIBYANG_API_DEF LY_ERR +lyd_new_meta(const struct ly_ctx *ctx, struct lyd_node *parent, const struct lys_module *module, const char *name, + const char *val_str, ly_bool clear_dflt, struct lyd_meta **meta) +{ + const char *prefix, *tmp; + size_t pref_len, name_len; + + LY_CHECK_ARG_RET(ctx, ctx || parent, name, module || strchr(name, ':'), parent || meta, LY_EINVAL); + LY_CHECK_CTX_EQUAL_RET(ctx, parent ? LYD_CTX(parent) : NULL, module ? module->ctx : NULL, LY_EINVAL); + if (!ctx) { + ctx = module ? module->ctx : LYD_CTX(parent); + } + + if (parent && !parent->schema) { + LOGERR(ctx, LY_EINVAL, "Cannot add metadata \"%s\" to an opaque node \"%s\".", name, LYD_NAME(parent)); + return LY_EINVAL; + } + if (meta) { + *meta = NULL; + } + + /* parse the name */ + tmp = name; + if (ly_parse_nodeid(&tmp, &prefix, &pref_len, &name, &name_len) || tmp[0]) { + LOGERR(ctx, LY_EINVAL, "Metadata name \"%s\" is not valid.", name); + return LY_EINVAL; + } + + /* find the module */ + if (prefix) { + module = ly_ctx_get_module_implemented2(ctx, prefix, pref_len); + LY_CHECK_ERR_RET(!module, LOGERR(ctx, LY_EINVAL, "Module \"%.*s\" not found.", (int)pref_len, prefix), LY_ENOTFOUND); + } + + /* set value if none */ + if (!val_str) { + val_str = ""; + } + + return lyd_create_meta(parent, meta, module, name, name_len, val_str, strlen(val_str), NULL, LY_VALUE_JSON, + NULL, LYD_HINT_DATA, parent ? parent->schema : NULL, clear_dflt, NULL); +} + +LIBYANG_API_DEF LY_ERR +lyd_new_meta2(const struct ly_ctx *ctx, struct lyd_node *parent, ly_bool clear_dflt, const struct lyd_attr *attr, + struct lyd_meta **meta) +{ + const struct lys_module *mod; + + LY_CHECK_ARG_RET(NULL, ctx, attr, parent || meta, LY_EINVAL); + LY_CHECK_CTX_EQUAL_RET(ctx, parent ? LYD_CTX(parent) : NULL, LY_EINVAL); + + if (parent && !parent->schema) { + LOGERR(ctx, LY_EINVAL, "Cannot add metadata to an opaque node \"%s\".", ((struct lyd_node_opaq *)parent)->name); + return LY_EINVAL; + } + if (meta) { + *meta = NULL; + } + + switch (attr->format) { + case LY_VALUE_XML: + mod = ly_ctx_get_module_implemented_ns(ctx, attr->name.module_ns); + if (!mod) { + LOGERR(ctx, LY_EINVAL, "Module with namespace \"%s\" not found.", attr->name.module_ns); + return LY_ENOTFOUND; + } + break; + case LY_VALUE_JSON: + mod = ly_ctx_get_module_implemented(ctx, attr->name.module_name); + if (!mod) { + LOGERR(ctx, LY_EINVAL, "Module \"%s\" not found.", attr->name.module_name); + return LY_ENOTFOUND; + } + break; + default: + LOGINT_RET(ctx); + } + + return lyd_create_meta(parent, meta, mod, attr->name.name, strlen(attr->name.name), attr->value, strlen(attr->value), + NULL, attr->format, attr->val_prefix_data, attr->hints, parent ? parent->schema : NULL, clear_dflt, NULL); +} + +LIBYANG_API_DEF LY_ERR +lyd_new_opaq(struct lyd_node *parent, const struct ly_ctx *ctx, const char *name, const char *value, + const char *prefix, const char *module_name, struct lyd_node **node) +{ + struct lyd_node *ret = NULL; + + LY_CHECK_ARG_RET(ctx, parent || ctx, parent || node, name, module_name, !prefix || !strcmp(prefix, module_name), LY_EINVAL); + LY_CHECK_CTX_EQUAL_RET(ctx, parent ? LYD_CTX(parent) : NULL, LY_EINVAL); + + if (!ctx) { + ctx = LYD_CTX(parent); + } + if (!value) { + value = ""; + } + + LY_CHECK_RET(lyd_create_opaq(ctx, name, strlen(name), prefix, prefix ? strlen(prefix) : 0, module_name, + strlen(module_name), value, strlen(value), NULL, LY_VALUE_JSON, NULL, 0, &ret)); + if (parent) { + lyd_insert_node(parent, NULL, ret, 1); + } + + if (node) { + *node = ret; + } + return LY_SUCCESS; +} + +LIBYANG_API_DEF LY_ERR +lyd_new_opaq2(struct lyd_node *parent, const struct ly_ctx *ctx, const char *name, const char *value, + const char *prefix, const char *module_ns, struct lyd_node **node) +{ + struct lyd_node *ret = NULL; + + LY_CHECK_ARG_RET(ctx, parent || ctx, parent || node, name, module_ns, LY_EINVAL); + LY_CHECK_CTX_EQUAL_RET(ctx, parent ? LYD_CTX(parent) : NULL, LY_EINVAL); + + if (!ctx) { + ctx = LYD_CTX(parent); + } + if (!value) { + value = ""; + } + + LY_CHECK_RET(lyd_create_opaq(ctx, name, strlen(name), prefix, prefix ? strlen(prefix) : 0, module_ns, + strlen(module_ns), value, strlen(value), NULL, LY_VALUE_XML, NULL, 0, &ret)); + if (parent) { + lyd_insert_node(parent, NULL, ret, 1); + } + + if (node) { + *node = ret; + } + return LY_SUCCESS; +} + +LIBYANG_API_DEF LY_ERR +lyd_new_attr(struct lyd_node *parent, const char *module_name, const char *name, const char *value, + struct lyd_attr **attr) +{ + struct lyd_attr *ret = NULL; + const struct ly_ctx *ctx; + const char *prefix, *tmp; + size_t pref_len, name_len, mod_len; + + LY_CHECK_ARG_RET(NULL, parent, !parent->schema, name, LY_EINVAL); + + ctx = LYD_CTX(parent); + + /* parse the name */ + tmp = name; + if (ly_parse_nodeid(&tmp, &prefix, &pref_len, &name, &name_len) || tmp[0]) { + LOGERR(ctx, LY_EINVAL, "Attribute name \"%s\" is not valid.", name); + return LY_EVALID; + } + + if ((pref_len == 3) && !strncmp(prefix, "xml", 3)) { + /* not a prefix but special name */ + name = prefix; + name_len += 1 + pref_len; + prefix = NULL; + pref_len = 0; + } + + /* get the module */ + if (module_name) { + mod_len = strlen(module_name); + } else { + module_name = prefix; + mod_len = pref_len; + } + + /* set value if none */ + if (!value) { + value = ""; + } + + LY_CHECK_RET(lyd_create_attr(parent, &ret, ctx, name, name_len, prefix, pref_len, module_name, mod_len, value, + strlen(value), NULL, LY_VALUE_JSON, NULL, LYD_HINT_DATA)); + + if (attr) { + *attr = ret; + } + return LY_SUCCESS; +} + +LIBYANG_API_DEF LY_ERR +lyd_new_attr2(struct lyd_node *parent, const char *module_ns, const char *name, const char *value, + struct lyd_attr **attr) +{ + struct lyd_attr *ret = NULL; + const struct ly_ctx *ctx; + const char *prefix, *tmp; + size_t pref_len, name_len; + + LY_CHECK_ARG_RET(NULL, parent, !parent->schema, name, LY_EINVAL); + + ctx = LYD_CTX(parent); + + /* parse the name */ + tmp = name; + if (ly_parse_nodeid(&tmp, &prefix, &pref_len, &name, &name_len) || tmp[0]) { + LOGERR(ctx, LY_EINVAL, "Attribute name \"%s\" is not valid.", name); + return LY_EVALID; + } + + if ((pref_len == 3) && !strncmp(prefix, "xml", 3)) { + /* not a prefix but special name */ + name = prefix; + name_len += 1 + pref_len; + prefix = NULL; + pref_len = 0; + } + + /* set value if none */ + if (!value) { + value = ""; + } + if (strchr(value, ':')) { + LOGWRN(ctx, "Value \"%s\" prefix will never be interpreted as an XML prefix.", value); + } + + LY_CHECK_RET(lyd_create_attr(parent, &ret, ctx, name, name_len, prefix, pref_len, module_ns, + module_ns ? strlen(module_ns) : 0, value, strlen(value), NULL, LY_VALUE_XML, NULL, LYD_HINT_DATA)); + + if (attr) { + *attr = ret; + } + return LY_SUCCESS; +} + +/** + * @brief Change the value of a term (leaf or leaf-list) node. + * + * Node changed this way is always considered explicitly set, meaning its default flag + * is always cleared. + * + * @param[in] term Term node to change. + * @param[in] value New value to set. + * @param[in] value_len Length of @p value. + * @param[in] format Format of @p value. + * @return LY_SUCCESS if value was changed, + * @return LY_EEXIST if value was the same and only the default flag was cleared, + * @return LY_ENOT if the values were equal and no change occured, + * @return LY_ERR value on other errors. + */ +static LY_ERR +_lyd_change_term(struct lyd_node *term, const void *value, size_t value_len, LY_VALUE_FORMAT format) +{ + LY_ERR ret = LY_SUCCESS; + struct lysc_type *type; + struct lyd_node_term *t; + struct lyd_node *parent; + struct lyd_value val; + ly_bool dflt_change, val_change; + + assert(term && term->schema && (term->schema->nodetype & LYD_NODE_TERM)); + + t = (struct lyd_node_term *)term; + type = ((struct lysc_node_leaf *)term->schema)->type; + + /* parse the new value */ + LOG_LOCSET(term->schema, term, NULL, NULL); + ret = lyd_value_store(LYD_CTX(term), &val, type, value, value_len, NULL, format, NULL, LYD_HINT_DATA, term->schema, NULL); + LOG_LOCBACK(term->schema ? 1 : 0, 1, 0, 0); + LY_CHECK_GOTO(ret, cleanup); + + /* compare original and new value */ + if (type->plugin->compare(&t->value, &val)) { + /* values differ, switch them */ + type->plugin->free(LYD_CTX(term), &t->value); + t->value = val; + val_change = 1; + } else { + /* same values, free the new stored one */ + type->plugin->free(LYD_CTX(term), &val); + val_change = 0; + } + + /* always clear the default flag */ + if (term->flags & LYD_DEFAULT) { + for (parent = term; parent; parent = lyd_parent(parent)) { + parent->flags &= ~LYD_DEFAULT; + } + dflt_change = 1; + } else { + dflt_change = 0; + } + + if (val_change || dflt_change) { + /* make the node non-validated */ + term->flags &= LYD_NEW; + } + + if (val_change) { + if (term->schema->nodetype == LYS_LEAFLIST) { + /* leaf-list needs to be hashed again and re-inserted into parent */ + lyd_unlink_hash(term); + lyd_hash(term); + LY_CHECK_GOTO(ret = lyd_insert_hash(term), cleanup); + } else if ((term->schema->flags & LYS_KEY) && term->parent) { + /* list needs to be updated if its key was changed */ + assert(term->parent->schema->nodetype == LYS_LIST); + lyd_unlink_hash(lyd_parent(term)); + lyd_hash(lyd_parent(term)); + LY_CHECK_GOTO(ret = lyd_insert_hash(lyd_parent(term)), cleanup); + } /* else leaf that is not a key, its value is not used for its hash so it does not change */ + } + + /* retrun value */ + if (!val_change) { + if (dflt_change) { + /* only default flag change */ + ret = LY_EEXIST; + } else { + /* no change */ + ret = LY_ENOT; + } + } /* else value changed, LY_SUCCESS */ + +cleanup: + return ret; +} + +LIBYANG_API_DEF LY_ERR +lyd_change_term(struct lyd_node *term, const char *val_str) +{ + LY_CHECK_ARG_RET(NULL, term, term->schema, term->schema->nodetype & LYD_NODE_TERM, LY_EINVAL); + + return _lyd_change_term(term, val_str, val_str ? strlen(val_str) : 0, LY_VALUE_JSON); +} + +LIBYANG_API_DEF LY_ERR +lyd_change_term_bin(struct lyd_node *term, const void *value, size_t value_len) +{ + LY_CHECK_ARG_RET(NULL, term, term->schema, term->schema->nodetype & LYD_NODE_TERM, LY_EINVAL); + + return _lyd_change_term(term, value, value_len, LY_VALUE_LYB); +} + +LIBYANG_API_DEF LY_ERR +lyd_change_term_canon(struct lyd_node *term, const char *val_str) +{ + LY_CHECK_ARG_RET(NULL, term, term->schema, term->schema->nodetype & LYD_NODE_TERM, LY_EINVAL); + + return _lyd_change_term(term, val_str, val_str ? strlen(val_str) : 0, LY_VALUE_CANON); +} + +LIBYANG_API_DEF LY_ERR +lyd_change_meta(struct lyd_meta *meta, const char *val_str) +{ + LY_ERR ret = LY_SUCCESS; + struct lyd_meta *m2 = NULL; + struct lyd_value val; + ly_bool val_change; + + LY_CHECK_ARG_RET(NULL, meta, LY_EINVAL); + + if (!val_str) { + val_str = ""; + } + + /* parse the new value into a new meta structure */ + ret = lyd_create_meta(NULL, &m2, meta->annotation->module, meta->name, strlen(meta->name), val_str, strlen(val_str), + NULL, LY_VALUE_JSON, NULL, LYD_HINT_DATA, meta->parent ? meta->parent->schema : NULL, 0, NULL); + LY_CHECK_GOTO(ret, cleanup); + + /* compare original and new value */ + if (lyd_compare_meta(meta, m2)) { + /* values differ, switch them */ + val = meta->value; + meta->value = m2->value; + m2->value = val; + val_change = 1; + } else { + val_change = 0; + } + + /* retrun value */ + if (!val_change) { + /* no change */ + ret = LY_ENOT; + } /* else value changed, LY_SUCCESS */ + +cleanup: + lyd_free_meta_single(m2); + return ret; +} + +/** + * @brief Update node value. + * + * @param[in] node Node to update. + * @param[in] value New value to set. + * @param[in] value_len Length of @p value. + * @param[in] value_type Type of @p value for anydata/anyxml node. + * @param[in] format Format of @p value. + * @param[out] new_parent Set to @p node if the value was updated, otherwise set to NULL. + * @param[out] new_node Set to @p node if the value was updated, otherwise set to NULL. + * @return LY_ERR value. + */ +static LY_ERR +lyd_new_path_update(struct lyd_node *node, const void *value, size_t value_len, LYD_ANYDATA_VALUETYPE value_type, + LY_VALUE_FORMAT format, struct lyd_node **new_parent, struct lyd_node **new_node) +{ + LY_ERR ret = LY_SUCCESS; + struct lyd_node *new_any; + + switch (node->schema->nodetype) { + case LYS_CONTAINER: + case LYS_NOTIF: + case LYS_RPC: + case LYS_ACTION: + case LYS_LIST: + /* if it exists, there is nothing to update */ + *new_parent = NULL; + *new_node = NULL; + break; + case LYS_LEAFLIST: + if (!lysc_is_dup_inst_list(node->schema)) { + /* if it exists, there is nothing to update */ + *new_parent = NULL; + *new_node = NULL; + break; + } + /* fallthrough */ + case LYS_LEAF: + ret = _lyd_change_term(node, value, value_len, format); + if ((ret == LY_SUCCESS) || (ret == LY_EEXIST)) { + /* there was an actual change (at least of the default flag) */ + *new_parent = node; + *new_node = node; + ret = LY_SUCCESS; + } else if (ret == LY_ENOT) { + /* no change */ + *new_parent = NULL; + *new_node = NULL; + ret = LY_SUCCESS; + } /* else error */ + break; + case LYS_ANYDATA: + case LYS_ANYXML: + /* create a new any node */ + LY_CHECK_RET(lyd_create_any(node->schema, value, value_type, 0, &new_any)); + + /* compare with the existing one */ + if (lyd_compare_single(node, new_any, 0)) { + /* not equal, switch values (so that we can use generic node free) */ + ((struct lyd_node_any *)new_any)->value = ((struct lyd_node_any *)node)->value; + ((struct lyd_node_any *)new_any)->value_type = ((struct lyd_node_any *)node)->value_type; + ((struct lyd_node_any *)node)->value.str = value; + ((struct lyd_node_any *)node)->value_type = value_type; + + *new_parent = node; + *new_node = node; + } else { + /* they are equal */ + *new_parent = NULL; + *new_node = NULL; + } + lyd_free_tree(new_any); + break; + default: + LOGINT(LYD_CTX(node)); + ret = LY_EINT; + break; + } + + return ret; +} + +static LY_ERR +lyd_new_path_check_find_lypath(struct ly_path *path, const char *str_path, const char *value, size_t value_len, + LY_VALUE_FORMAT format, uint32_t options) +{ + LY_ERR r; + struct ly_path_predicate *pred; + struct lyd_value val; + const struct lysc_node *schema = NULL; + LY_ARRAY_COUNT_TYPE u, new_count; + int create = 0; + + assert(path); + + /* go through all the compiled nodes */ + LY_ARRAY_FOR(path, u) { + schema = path[u].node; + + if (lysc_is_dup_inst_list(schema)) { + if (path[u].pred_type == LY_PATH_PREDTYPE_NONE) { + /* creating a new key-less list or state leaf-list instance */ + create = 1; + new_count = u; + } else if (path[u].pred_type != LY_PATH_PREDTYPE_POSITION) { + LOG_LOCSET(schema, NULL, NULL, NULL); + LOGVAL(schema->module->ctx, LYVE_XPATH, "Invalid predicate for %s \"%s\" in path \"%s\".", + lys_nodetype2str(schema->nodetype), schema->name, str_path); + LOG_LOCBACK(1, 0, 0, 0); + return LY_EINVAL; + } + } else if ((schema->nodetype == LYS_LIST) && (path[u].pred_type != LY_PATH_PREDTYPE_LIST)) { + if ((u < LY_ARRAY_COUNT(path) - 1) || !(options & LYD_NEW_PATH_OPAQ)) { + LOG_LOCSET(schema, NULL, NULL, NULL); + LOGVAL(schema->module->ctx, LYVE_XPATH, "Predicate missing for %s \"%s\" in path \"%s\".", + lys_nodetype2str(schema->nodetype), schema->name, str_path); + LOG_LOCBACK(1, 0, 0, 0); + return LY_EINVAL; + } /* else creating an opaque list */ + } else if ((schema->nodetype == LYS_LEAFLIST) && (path[u].pred_type != LY_PATH_PREDTYPE_LEAFLIST)) { + r = LY_SUCCESS; + if (options & LYD_NEW_PATH_OPAQ) { + r = lyd_value_validate(NULL, schema, value, value_len, NULL, NULL, NULL); + } + if (!r) { + /* try to store the value */ + LY_CHECK_RET(lyd_value_store(schema->module->ctx, &val, ((struct lysc_node_leaflist *)schema)->type, + value, value_len, NULL, format, NULL, LYD_HINT_DATA, schema, NULL)); + ++((struct lysc_type *)val.realtype)->refcount; + + /* store the new predicate so that it is used when searching for this instance */ + path[u].pred_type = LY_PATH_PREDTYPE_LEAFLIST; + LY_ARRAY_NEW_RET(schema->module->ctx, path[u].predicates, pred, LY_EMEM); + pred->value = val; + } /* else we have opaq flag and the value is not valid, leave no predicate and then create an opaque node */ + } + } + + if (create) { + /* hide the nodes that should always be created so they are not found */ + while (new_count < LY_ARRAY_COUNT(path)) { + LY_ARRAY_DECREMENT(path); + } + } + + return LY_SUCCESS; +} + +/** + * @brief Create a new node in the data tree based on a path. All node types can be created. + * + * If @p path points to a list key, the key value from the predicate is used and @p value is ignored. + * Also, if a leaf-list is being created and both a predicate is defined in @p path + * and @p value is set, the predicate is preferred. + * + * For key-less lists and state leaf-lists, positional predicates can be used. If no preciate is used for these + * nodes, they are always created. + * + * @param[in] parent Data parent to add to/modify, can be NULL. Note that in case a first top-level sibling is used, + * it may no longer be first if @p path is absolute and starts with a non-existing top-level node inserted + * before @p parent. Use ::lyd_first_sibling() to adjust @p parent in these cases. + * @param[in] ctx libyang context, must be set if @p parent is NULL. + * @param[in] ext Extension instance where the node being created is defined. This argument takes effect only for absolute + * path or when the relative paths touches document root (top-level). In such cases the present extension instance replaces + * searching for the appropriate module. + * @param[in] path [Path](@ref howtoXPath) to create. + * @param[in] value Value of the new leaf/leaf-list (const char *) in ::LY_VALUE_JSON format. If creating an + * anyxml/anydata node, the expected type depends on @p value_type. For other node types, it should be NULL. + * @param[in] value_len Length of @p value in bytes. May be 0 if @p value is a zero-terminated string. Ignored when + * creating anyxml/anydata nodes. + * @param[in] value_type Anyxml/anydata node @p value type. + * @param[in] options Bitmask of options, see @ref pathoptions. + * @param[out] new_parent Optional first parent node created. If only one node was created, equals to @p new_node. + * @param[out] new_node Optional last node created. + * @return LY_ERR value. + */ +static LY_ERR +lyd_new_path_(struct lyd_node *parent, const struct ly_ctx *ctx, const struct lysc_ext_instance *ext, const char *path, + const void *value, size_t value_len, LYD_ANYDATA_VALUETYPE value_type, uint32_t options, + struct lyd_node **new_parent, struct lyd_node **new_node) +{ + LY_ERR ret = LY_SUCCESS, r; + struct lyxp_expr *exp = NULL; + struct ly_path *p = NULL; + struct lyd_node *nparent = NULL, *nnode = NULL, *node = NULL, *cur_parent; + const struct lysc_node *schema; + const struct lyd_value *val = NULL; + LY_ARRAY_COUNT_TYPE path_idx = 0, orig_count = 0; + LY_VALUE_FORMAT format; + + assert(parent || ctx); + assert(path && ((path[0] == '/') || parent)); + assert(!(options & LYD_NEW_PATH_BIN_VALUE) || !(options & LYD_NEW_PATH_CANON_VALUE)); + + if (!ctx) { + ctx = LYD_CTX(parent); + } + if (value && !value_len) { + value_len = strlen(value); + } + if (options & LYD_NEW_PATH_BIN_VALUE) { + format = LY_VALUE_LYB; + } else if (options & LYD_NEW_PATH_CANON_VALUE) { + format = LY_VALUE_CANON; + } else { + format = LY_VALUE_JSON; + } + + /* parse path */ + LY_CHECK_GOTO(ret = ly_path_parse(ctx, NULL, path, strlen(path), 0, LY_PATH_BEGIN_EITHER, LY_PATH_PREFIX_OPTIONAL, + LY_PATH_PRED_SIMPLE, &exp), cleanup); + + /* compile path */ + LY_CHECK_GOTO(ret = ly_path_compile(ctx, NULL, lyd_node_schema(parent), ext, exp, options & LYD_NEW_PATH_OUTPUT ? + LY_PATH_OPER_OUTPUT : LY_PATH_OPER_INPUT, LY_PATH_TARGET_MANY, 0, LY_VALUE_JSON, NULL, &p), cleanup); + + /* check the compiled path before searching existing nodes, it may be shortened */ + orig_count = LY_ARRAY_COUNT(p); + LY_CHECK_GOTO(ret = lyd_new_path_check_find_lypath(p, path, value, value_len, format, options), cleanup); + + /* try to find any existing nodes in the path */ + if (parent) { + ret = ly_path_eval_partial(p, parent, &path_idx, &node); + if (ret == LY_SUCCESS) { + if (orig_count == LY_ARRAY_COUNT(p)) { + /* the node exists, are we supposed to update it or is it just a default? */ + if (!(options & LYD_NEW_PATH_UPDATE) && !(node->flags & LYD_DEFAULT)) { + LOG_LOCSET(NULL, node, NULL, NULL); + LOGVAL(ctx, LYVE_REFERENCE, "Path \"%s\" already exists", path); + LOG_LOCBACK(0, 1, 0, 0); + ret = LY_EEXIST; + goto cleanup; + } + + /* update the existing node */ + ret = lyd_new_path_update(node, value, value_len, value_type, format, &nparent, &nnode); + goto cleanup; + } /* else we were not searching for the whole path */ + } else if (ret == LY_EINCOMPLETE) { + /* some nodes were found, adjust the iterator to the next segment */ + ++path_idx; + } else if (ret == LY_ENOTFOUND) { + /* we will create the nodes from top-level, default behavior (absolute path), or from the parent (relative path) */ + if (lysc_data_parent(p[0].node)) { + node = parent; + } + } else { + /* error */ + goto cleanup; + } + } + + /* restore the full path for creating new nodes */ + while (orig_count > LY_ARRAY_COUNT(p)) { + LY_ARRAY_INCREMENT(p); + } + + /* create all the non-existing nodes in a loop */ + for ( ; path_idx < LY_ARRAY_COUNT(p); ++path_idx) { + cur_parent = node; + schema = p[path_idx].node; + + switch (schema->nodetype) { + case LYS_LIST: + if (lysc_is_dup_inst_list(schema)) { + /* create key-less list instance */ + LY_CHECK_GOTO(ret = lyd_create_inner(schema, &node), cleanup); + } else if ((options & LYD_NEW_PATH_OPAQ) && (p[path_idx].pred_type == LY_PATH_PREDTYPE_NONE)) { + /* creating opaque list without keys */ + LY_CHECK_GOTO(ret = lyd_create_opaq(ctx, schema->name, strlen(schema->name), NULL, 0, + schema->module->name, strlen(schema->module->name), NULL, 0, NULL, LY_VALUE_JSON, NULL, + LYD_NODEHINT_LIST, &node), cleanup); + } else { + /* create standard list instance */ + assert(p[path_idx].pred_type == LY_PATH_PREDTYPE_LIST); + LY_CHECK_GOTO(ret = lyd_create_list(schema, p[path_idx].predicates, &node), cleanup); + } + break; + case LYS_CONTAINER: + case LYS_NOTIF: + case LYS_RPC: + case LYS_ACTION: + LY_CHECK_GOTO(ret = lyd_create_inner(schema, &node), cleanup); + break; + case LYS_LEAFLIST: + if ((options & LYD_NEW_PATH_OPAQ) && (p[path_idx].pred_type != LY_PATH_PREDTYPE_LEAFLIST)) { + /* we have not checked this only for dup-inst lists, otherwise it must be opaque */ + r = LY_EVALID; + if (lysc_is_dup_inst_list(schema)) { + /* validate value */ + r = lyd_value_validate(NULL, schema, value ? value : "", value_len, NULL, NULL, NULL); + } + if (r && (r != LY_EINCOMPLETE)) { + /* creating opaque leaf-list */ + LY_CHECK_GOTO(ret = lyd_create_opaq(ctx, schema->name, strlen(schema->name), value, value_len, + schema->module->name, strlen(schema->module->name), NULL, 0, NULL, format, NULL, + LYD_NODEHINT_LEAFLIST, &node), cleanup); + break; + } + } + + /* get value to set */ + if (p[path_idx].pred_type == LY_PATH_PREDTYPE_LEAFLIST) { + val = &p[path_idx].predicates[0].value; + } + + /* create a leaf-list instance */ + if (val) { + LY_CHECK_GOTO(ret = lyd_create_term2(schema, &p[path_idx].predicates[0].value, &node), cleanup); + } else { + LY_CHECK_GOTO(ret = lyd_create_term(schema, value, value_len, NULL, format, NULL, LYD_HINT_DATA, + NULL, &node), cleanup); + } + break; + case LYS_LEAF: + if (lysc_is_key(schema) && cur_parent->schema) { + /* it must have been already created or some error will occur later */ + lyd_find_sibling_schema(lyd_child(cur_parent), schema, &node); + assert(node); + goto next_iter; + } + + if (options & LYD_NEW_PATH_OPAQ) { + if (cur_parent && !cur_parent->schema) { + /* always create opaque nodes for opaque parents */ + r = LY_ENOT; + } else { + /* validate value */ + r = lyd_value_validate(NULL, schema, value ? value : "", value_len, NULL, NULL, NULL); + } + if (r && (r != LY_EINCOMPLETE)) { + /* creating opaque leaf */ + LY_CHECK_GOTO(ret = lyd_create_opaq(ctx, schema->name, strlen(schema->name), value, value_len, + schema->module->name, strlen(schema->module->name), NULL, 0, NULL, format, NULL, 0, &node), + cleanup); + break; + } + } + + /* create a leaf instance */ + LY_CHECK_GOTO(ret = lyd_create_term(schema, value, value_len, NULL, format, NULL, LYD_HINT_DATA, NULL, + &node), cleanup); + break; + case LYS_ANYDATA: + case LYS_ANYXML: + LY_CHECK_GOTO(ret = lyd_create_any(schema, value, value_type, 0, &node), cleanup); + break; + default: + LOGINT(ctx); + ret = LY_EINT; + goto cleanup; + } + + if (p[path_idx].ext) { + node->flags |= LYD_EXT; + } + if (cur_parent) { + /* connect to the parent */ + lyd_insert_node(cur_parent, NULL, node, 0); + } else if (parent) { + /* connect to top-level siblings */ + lyd_insert_node(NULL, &parent, node, 0); + } + +next_iter: + /* update remembered nodes */ + if (!nparent) { + nparent = node; + } + nnode = node; + } + +cleanup: + lyxp_expr_free(ctx, exp); + if (p) { + while (orig_count > LY_ARRAY_COUNT(p)) { + LY_ARRAY_INCREMENT(p); + } + } + ly_path_free(ctx, p); + if (!ret) { + /* set out params only on success */ + if (new_parent) { + *new_parent = nparent; + } + if (new_node) { + *new_node = nnode; + } + } else { + lyd_free_tree(nparent); + } + return ret; +} + +LIBYANG_API_DEF LY_ERR +lyd_new_path(struct lyd_node *parent, const struct ly_ctx *ctx, const char *path, const char *value, uint32_t options, + struct lyd_node **node) +{ + LY_CHECK_ARG_RET(ctx, parent || ctx, path, (path[0] == '/') || parent, + !(options & LYD_NEW_PATH_BIN_VALUE) || !(options & LYD_NEW_PATH_CANON_VALUE), LY_EINVAL); + LY_CHECK_CTX_EQUAL_RET(parent ? LYD_CTX(parent) : NULL, ctx, LY_EINVAL); + + return lyd_new_path_(parent, ctx, NULL, path, value, 0, LYD_ANYDATA_STRING, options, node, NULL); +} + +LIBYANG_API_DEF LY_ERR +lyd_new_path2(struct lyd_node *parent, const struct ly_ctx *ctx, const char *path, const void *value, + size_t value_len, LYD_ANYDATA_VALUETYPE value_type, uint32_t options, struct lyd_node **new_parent, + struct lyd_node **new_node) +{ + LY_CHECK_ARG_RET(ctx, parent || ctx, path, (path[0] == '/') || parent, + !(options & LYD_NEW_PATH_BIN_VALUE) || !(options & LYD_NEW_PATH_CANON_VALUE), LY_EINVAL); + LY_CHECK_CTX_EQUAL_RET(parent ? LYD_CTX(parent) : NULL, ctx, LY_EINVAL); + + return lyd_new_path_(parent, ctx, NULL, path, value, value_len, value_type, options, new_parent, new_node); +} + +LIBYANG_API_DEF LY_ERR +lyd_new_ext_path(struct lyd_node *parent, const struct lysc_ext_instance *ext, const char *path, const void *value, + uint32_t options, struct lyd_node **node) +{ + const struct ly_ctx *ctx = ext ? ext->module->ctx : NULL; + + LY_CHECK_ARG_RET(ctx, ext, path, (path[0] == '/') || parent, + !(options & LYD_NEW_PATH_BIN_VALUE) || !(options & LYD_NEW_PATH_CANON_VALUE), LY_EINVAL); + LY_CHECK_CTX_EQUAL_RET(parent ? LYD_CTX(parent) : NULL, ctx, LY_EINVAL); + + return lyd_new_path_(parent, ctx, ext, path, value, 0, LYD_ANYDATA_STRING, options, node, NULL); +} + +LY_ERR +lyd_new_implicit_r(struct lyd_node *parent, struct lyd_node **first, const struct lysc_node *sparent, + const struct lys_module *mod, struct ly_set *node_when, struct ly_set *node_types, struct ly_set *ext_node, + uint32_t impl_opts, struct lyd_node **diff) +{ + LY_ERR ret; + const struct lysc_node *iter = NULL; + struct lyd_node *node = NULL; + struct lyd_value **dflts; + LY_ARRAY_COUNT_TYPE u; + uint32_t getnext_opts; + + assert(first && (parent || sparent || mod)); + + if (!sparent && parent) { + sparent = parent->schema; + } + + getnext_opts = LYS_GETNEXT_WITHCHOICE; + if (impl_opts & LYD_IMPLICIT_OUTPUT) { + getnext_opts |= LYS_GETNEXT_OUTPUT; + } + + while ((iter = lys_getnext(iter, sparent, mod ? mod->compiled : NULL, getnext_opts))) { + if ((impl_opts & LYD_IMPLICIT_NO_STATE) && (iter->flags & LYS_CONFIG_R)) { + continue; + } else if ((impl_opts & LYD_IMPLICIT_NO_CONFIG) && (iter->flags & LYS_CONFIG_W)) { + continue; + } + + switch (iter->nodetype) { + case LYS_CHOICE: + node = lys_getnext_data(NULL, *first, NULL, iter, NULL); + if (!node && ((struct lysc_node_choice *)iter)->dflt) { + /* create default case data */ + LY_CHECK_RET(lyd_new_implicit_r(parent, first, &((struct lysc_node_choice *)iter)->dflt->node, + NULL, node_when, node_types, ext_node, impl_opts, diff)); + } else if (node) { + /* create any default data in the existing case */ + assert(node->schema->parent->nodetype == LYS_CASE); + LY_CHECK_RET(lyd_new_implicit_r(parent, first, node->schema->parent, NULL, node_when, node_types, + ext_node, impl_opts, diff)); + } + break; + case LYS_CONTAINER: + if (!(iter->flags & LYS_PRESENCE) && lyd_find_sibling_val(*first, iter, NULL, 0, NULL)) { + /* create default NP container */ + LY_CHECK_RET(lyd_create_inner(iter, &node)); + node->flags = LYD_DEFAULT | (lysc_has_when(iter) ? LYD_WHEN_TRUE : 0); + lyd_insert_node(parent, first, node, 0); + + if (lysc_has_when(iter) && node_when) { + /* remember to resolve when */ + LY_CHECK_RET(ly_set_add(node_when, node, 1, NULL)); + } + if (ext_node) { + /* store for ext instance node validation, if needed */ + LY_CHECK_RET(lyd_validate_node_ext(node, ext_node)); + } + if (diff) { + /* add into diff */ + LY_CHECK_RET(lyd_val_diff_add(node, LYD_DIFF_OP_CREATE, diff)); + } + + /* create any default children */ + LY_CHECK_RET(lyd_new_implicit_r(node, lyd_node_child_p(node), NULL, NULL, node_when, node_types, + ext_node, impl_opts, diff)); + } + break; + case LYS_LEAF: + if (!(impl_opts & LYD_IMPLICIT_NO_DEFAULTS) && ((struct lysc_node_leaf *)iter)->dflt && + lyd_find_sibling_val(*first, iter, NULL, 0, NULL)) { + /* create default leaf */ + ret = lyd_create_term2(iter, ((struct lysc_node_leaf *)iter)->dflt, &node); + if (ret == LY_EINCOMPLETE) { + if (node_types) { + /* remember to resolve type */ + LY_CHECK_RET(ly_set_add(node_types, node, 1, NULL)); + } + } else if (ret) { + return ret; + } + node->flags = LYD_DEFAULT | (lysc_has_when(iter) ? LYD_WHEN_TRUE : 0); + lyd_insert_node(parent, first, node, 0); + + if (lysc_has_when(iter) && node_when) { + /* remember to resolve when */ + LY_CHECK_RET(ly_set_add(node_when, node, 1, NULL)); + } + if (ext_node) { + /* store for ext instance node validation, if needed */ + LY_CHECK_RET(lyd_validate_node_ext(node, ext_node)); + } + if (diff) { + /* add into diff */ + LY_CHECK_RET(lyd_val_diff_add(node, LYD_DIFF_OP_CREATE, diff)); + } + } + break; + case LYS_LEAFLIST: + if (!(impl_opts & LYD_IMPLICIT_NO_DEFAULTS) && ((struct lysc_node_leaflist *)iter)->dflts && + lyd_find_sibling_val(*first, iter, NULL, 0, NULL)) { + /* create all default leaf-lists */ + dflts = ((struct lysc_node_leaflist *)iter)->dflts; + LY_ARRAY_FOR(dflts, u) { + ret = lyd_create_term2(iter, dflts[u], &node); + if (ret == LY_EINCOMPLETE) { + if (node_types) { + /* remember to resolve type */ + LY_CHECK_RET(ly_set_add(node_types, node, 1, NULL)); + } + } else if (ret) { + return ret; + } + node->flags = LYD_DEFAULT | (lysc_has_when(iter) ? LYD_WHEN_TRUE : 0); + lyd_insert_node(parent, first, node, 0); + + if (lysc_has_when(iter) && node_when) { + /* remember to resolve when */ + LY_CHECK_RET(ly_set_add(node_when, node, 1, NULL)); + } + if (ext_node) { + /* store for ext instance node validation, if needed */ + LY_CHECK_RET(lyd_validate_node_ext(node, ext_node)); + } + if (diff) { + /* add into diff */ + LY_CHECK_RET(lyd_val_diff_add(node, LYD_DIFF_OP_CREATE, diff)); + } + } + } + break; + default: + /* without defaults */ + break; + } + } + + return LY_SUCCESS; +} + +LIBYANG_API_DEF LY_ERR +lyd_new_implicit_tree(struct lyd_node *tree, uint32_t implicit_options, struct lyd_node **diff) +{ + LY_ERR ret = LY_SUCCESS; + struct lyd_node *node; + struct ly_set node_when = {0}; + + LY_CHECK_ARG_RET(NULL, tree, LY_EINVAL); + if (diff) { + *diff = NULL; + } + + LYD_TREE_DFS_BEGIN(tree, node) { + /* skip added default nodes */ + if (((node->flags & (LYD_DEFAULT | LYD_NEW)) != (LYD_DEFAULT | LYD_NEW)) && + (node->schema->nodetype & LYD_NODE_INNER)) { + LY_CHECK_GOTO(ret = lyd_new_implicit_r(node, lyd_node_child_p(node), NULL, NULL, &node_when, NULL, + NULL, implicit_options, diff), cleanup); + } + + LYD_TREE_DFS_END(tree, node); + } + + /* resolve when and remove any invalid defaults */ + ret = lyd_validate_unres(&tree, NULL, 0, &node_when, LYXP_IGNORE_WHEN, NULL, NULL, NULL, NULL, 0, diff); + LY_CHECK_GOTO(ret, cleanup); + +cleanup: + ly_set_erase(&node_when, NULL); + if (ret && diff) { + lyd_free_all(*diff); + *diff = NULL; + } + return ret; +} + +LIBYANG_API_DEF LY_ERR +lyd_new_implicit_all(struct lyd_node **tree, const struct ly_ctx *ctx, uint32_t implicit_options, struct lyd_node **diff) +{ + const struct lys_module *mod; + struct lyd_node *d = NULL; + uint32_t i = 0; + LY_ERR ret = LY_SUCCESS; + + LY_CHECK_ARG_RET(ctx, tree, *tree || ctx, LY_EINVAL); + LY_CHECK_CTX_EQUAL_RET(*tree ? LYD_CTX(*tree) : NULL, ctx, LY_EINVAL); + if (diff) { + *diff = NULL; + } + if (!ctx) { + ctx = LYD_CTX(*tree); + } + + /* add nodes for each module one-by-one */ + while ((mod = ly_ctx_get_module_iter(ctx, &i))) { + if (!mod->implemented) { + continue; + } + + LY_CHECK_GOTO(ret = lyd_new_implicit_module(tree, mod, implicit_options, diff ? &d : NULL), cleanup); + if (d) { + /* merge into one diff */ + lyd_insert_sibling(*diff, d, diff); + + d = NULL; + } + } + +cleanup: + if (ret && diff) { + lyd_free_all(*diff); + *diff = NULL; + } + return ret; +} + +LIBYANG_API_DEF LY_ERR +lyd_new_implicit_module(struct lyd_node **tree, const struct lys_module *module, uint32_t implicit_options, + struct lyd_node **diff) +{ + LY_ERR ret = LY_SUCCESS; + struct lyd_node *root, *d = NULL; + struct ly_set node_when = {0}; + + LY_CHECK_ARG_RET(NULL, tree, module, LY_EINVAL); + LY_CHECK_CTX_EQUAL_RET(*tree ? LYD_CTX(*tree) : NULL, module ? module->ctx : NULL, LY_EINVAL); + if (diff) { + *diff = NULL; + } + + /* add all top-level defaults for this module */ + LY_CHECK_GOTO(ret = lyd_new_implicit_r(NULL, tree, NULL, module, &node_when, NULL, NULL, implicit_options, diff), + cleanup); + + /* resolve when and remove any invalid defaults */ + LY_CHECK_GOTO(ret = lyd_validate_unres(tree, module, 0, &node_when, LYXP_IGNORE_WHEN, NULL, NULL, NULL, NULL, + 0, diff), cleanup); + + /* process nested nodes */ + LY_LIST_FOR(*tree, root) { + /* skip added default nodes */ + if ((root->flags & (LYD_DEFAULT | LYD_NEW)) != (LYD_DEFAULT | LYD_NEW)) { + LY_CHECK_GOTO(ret = lyd_new_implicit_tree(root, implicit_options, diff ? &d : NULL), cleanup); + + if (d) { + /* merge into one diff */ + lyd_insert_sibling(*diff, d, diff); + + d = NULL; + } + } + } + +cleanup: + ly_set_erase(&node_when, NULL); + if (ret && diff) { + lyd_free_all(*diff); + *diff = NULL; + } + return ret; +} |