From cd07912073c951b4bbb871ed2653af1be2cfc714 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 28 Apr 2024 11:55:11 +0200 Subject: Adding upstream version 2.1.30. Signed-off-by: Daniel Baumann --- src/plugins_exts/structure.c | 558 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 558 insertions(+) create mode 100644 src/plugins_exts/structure.c (limited to 'src/plugins_exts/structure.c') diff --git a/src/plugins_exts/structure.c b/src/plugins_exts/structure.c new file mode 100644 index 0000000..ee7a52e --- /dev/null +++ b/src/plugins_exts/structure.c @@ -0,0 +1,558 @@ +/** + * @file structure.c + * @author Michal Vasko + * @brief libyang extension plugin - structure (RFC 8791) + * + * Copyright (c) 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 + */ + +#include +#include +#include +#include + +#include "compat.h" +#include "libyang.h" +#include "plugins_exts.h" + +struct lysp_ext_instance_structure { + struct lysp_restr *musts; + uint16_t flags; + const char *dsc; + const char *ref; + struct lysp_tpdf *typedefs; + struct lysp_node_grp *groupings; + struct lysp_node *child; +}; + +struct lysc_ext_instance_structure { + struct lysc_must *musts; + uint16_t flags; + const char *dsc; + const char *ref; + struct lysc_node *child; +}; + +struct lysp_ext_instance_augment_structure { + uint16_t flags; + const char *dsc; + const char *ref; + struct lysp_node *child; + struct lysp_node_augment *aug; +}; + +/** + * @brief Parse structure extension instances. + * + * Implementation of ::lyplg_ext_parse_clb callback set as lyext_plugin::parse. + */ +static LY_ERR +structure_parse(struct lysp_ctx *pctx, struct lysp_ext_instance *ext) +{ + LY_ERR rc; + LY_ARRAY_COUNT_TYPE u; + struct lysp_module *pmod; + struct lysp_ext_instance_structure *struct_pdata; + + /* structure can appear only at the top level of a YANG module or submodule */ + if ((ext->parent_stmt != LY_STMT_MODULE) && (ext->parent_stmt != LY_STMT_SUBMODULE)) { + lyplg_ext_parse_log(pctx, ext, LY_LLERR, LY_EVALID, + "Extension %s must not be used as a non top-level statement in \"%s\" statement.", ext->name, + lyplg_ext_stmt2str(ext->parent_stmt)); + return LY_EVALID; + } + + pmod = ext->parent; + + /* check for duplication */ + LY_ARRAY_FOR(pmod->exts, u) { + if ((&pmod->exts[u] != ext) && (pmod->exts[u].name == ext->name) && !strcmp(pmod->exts[u].argument, ext->argument)) { + /* duplication of the same structure extension in a single module */ + lyplg_ext_parse_log(pctx, ext, LY_LLERR, LY_EVALID, "Extension %s is instantiated multiple times.", ext->name); + return LY_EVALID; + } + } + + /* allocate the storage */ + struct_pdata = calloc(1, sizeof *struct_pdata); + if (!struct_pdata) { + goto emem; + } + ext->parsed = struct_pdata; + LY_ARRAY_CREATE_GOTO(lyplg_ext_parse_get_cur_pmod(pctx)->mod->ctx, ext->substmts, 14, rc, emem); + + /* parse substatements */ + LY_ARRAY_INCREMENT(ext->substmts); + ext->substmts[0].stmt = LY_STMT_MUST; + ext->substmts[0].storage = &struct_pdata->musts; + + LY_ARRAY_INCREMENT(ext->substmts); + ext->substmts[1].stmt = LY_STMT_STATUS; + ext->substmts[1].storage = &struct_pdata->flags; + + LY_ARRAY_INCREMENT(ext->substmts); + ext->substmts[2].stmt = LY_STMT_DESCRIPTION; + ext->substmts[2].storage = &struct_pdata->dsc; + + LY_ARRAY_INCREMENT(ext->substmts); + ext->substmts[3].stmt = LY_STMT_REFERENCE; + ext->substmts[3].storage = &struct_pdata->ref; + + LY_ARRAY_INCREMENT(ext->substmts); + ext->substmts[4].stmt = LY_STMT_TYPEDEF; + ext->substmts[4].storage = &struct_pdata->typedefs; + + LY_ARRAY_INCREMENT(ext->substmts); + ext->substmts[5].stmt = LY_STMT_GROUPING; + ext->substmts[5].storage = &struct_pdata->groupings; + + /* data-def-stmt */ + LY_ARRAY_INCREMENT(ext->substmts); + ext->substmts[6].stmt = LY_STMT_CONTAINER; + ext->substmts[6].storage = &struct_pdata->child; + + LY_ARRAY_INCREMENT(ext->substmts); + ext->substmts[7].stmt = LY_STMT_LEAF; + ext->substmts[7].storage = &struct_pdata->child; + + LY_ARRAY_INCREMENT(ext->substmts); + ext->substmts[8].stmt = LY_STMT_LEAF_LIST; + ext->substmts[8].storage = &struct_pdata->child; + + LY_ARRAY_INCREMENT(ext->substmts); + ext->substmts[9].stmt = LY_STMT_LIST; + ext->substmts[9].storage = &struct_pdata->child; + + LY_ARRAY_INCREMENT(ext->substmts); + ext->substmts[10].stmt = LY_STMT_CHOICE; + ext->substmts[10].storage = &struct_pdata->child; + + LY_ARRAY_INCREMENT(ext->substmts); + ext->substmts[11].stmt = LY_STMT_ANYDATA; + ext->substmts[11].storage = &struct_pdata->child; + + LY_ARRAY_INCREMENT(ext->substmts); + ext->substmts[12].stmt = LY_STMT_ANYXML; + ext->substmts[12].storage = &struct_pdata->child; + + LY_ARRAY_INCREMENT(ext->substmts); + ext->substmts[13].stmt = LY_STMT_USES; + ext->substmts[13].storage = &struct_pdata->child; + + rc = lyplg_ext_parse_extension_instance(pctx, ext); + return rc; + +emem: + lyplg_ext_parse_log(pctx, ext, LY_LLERR, LY_EMEM, "Memory allocation failed (%s()).", __func__); + return LY_EMEM; +} + +/** + * @brief Compile structure extension instances. + * + * Implementation of ::lyplg_ext_compile_clb callback set as lyext_plugin::compile. + */ +static LY_ERR +structure_compile(struct lysc_ctx *cctx, const struct lysp_ext_instance *extp, struct lysc_ext_instance *ext) +{ + LY_ERR rc; + struct lysc_module *mod_c; + const struct lysc_node *child; + struct lysc_ext_instance_structure *struct_cdata; + uint32_t prev_options = *lyplg_ext_compile_get_options(cctx); + + mod_c = ext->parent; + + /* check identifier namespace with the compiled nodes */ + LY_LIST_FOR(mod_c->data, child) { + if (!strcmp(child->name, ext->argument)) { + /* identifier collision */ + lyplg_ext_compile_log(cctx, ext, LY_LLERR, LY_EVALID, "Extension %s collides with a %s with the same identifier.", + extp->name, lys_nodetype2str(child->nodetype)); + return LY_EVALID; + } + } + + /* allocate the storage */ + struct_cdata = calloc(1, sizeof *struct_cdata); + if (!struct_cdata) { + goto emem; + } + ext->compiled = struct_cdata; + + /* compile substatements */ + LY_ARRAY_CREATE_GOTO(cctx->ctx, ext->substmts, 14, rc, emem); + LY_ARRAY_INCREMENT(ext->substmts); + ext->substmts[0].stmt = LY_STMT_MUST; + ext->substmts[0].storage = &struct_cdata->musts; + + LY_ARRAY_INCREMENT(ext->substmts); + ext->substmts[1].stmt = LY_STMT_STATUS; + ext->substmts[1].storage = &struct_cdata->flags; + + LY_ARRAY_INCREMENT(ext->substmts); + ext->substmts[2].stmt = LY_STMT_DESCRIPTION; + ext->substmts[2].storage = &struct_cdata->dsc; + + LY_ARRAY_INCREMENT(ext->substmts); + ext->substmts[3].stmt = LY_STMT_REFERENCE; + ext->substmts[3].storage = &struct_cdata->ref; + + LY_ARRAY_INCREMENT(ext->substmts); + ext->substmts[4].stmt = LY_STMT_TYPEDEF; + ext->substmts[4].storage = NULL; + + LY_ARRAY_INCREMENT(ext->substmts); + ext->substmts[5].stmt = LY_STMT_GROUPING; + ext->substmts[5].storage = NULL; + + /* data-def-stmt */ + LY_ARRAY_INCREMENT(ext->substmts); + ext->substmts[6].stmt = LY_STMT_CONTAINER; + ext->substmts[6].storage = &struct_cdata->child; + + LY_ARRAY_INCREMENT(ext->substmts); + ext->substmts[7].stmt = LY_STMT_LEAF; + ext->substmts[7].storage = &struct_cdata->child; + + LY_ARRAY_INCREMENT(ext->substmts); + ext->substmts[8].stmt = LY_STMT_LEAF_LIST; + ext->substmts[8].storage = &struct_cdata->child; + + LY_ARRAY_INCREMENT(ext->substmts); + ext->substmts[9].stmt = LY_STMT_LIST; + ext->substmts[9].storage = &struct_cdata->child; + + LY_ARRAY_INCREMENT(ext->substmts); + ext->substmts[10].stmt = LY_STMT_CHOICE; + ext->substmts[10].storage = &struct_cdata->child; + + LY_ARRAY_INCREMENT(ext->substmts); + ext->substmts[11].stmt = LY_STMT_ANYDATA; + ext->substmts[11].storage = &struct_cdata->child; + + LY_ARRAY_INCREMENT(ext->substmts); + ext->substmts[12].stmt = LY_STMT_ANYXML; + ext->substmts[12].storage = &struct_cdata->child; + + LY_ARRAY_INCREMENT(ext->substmts); + ext->substmts[13].stmt = LY_STMT_USES; + ext->substmts[13].storage = &struct_cdata->child; + + *lyplg_ext_compile_get_options(cctx) |= LYS_COMPILE_NO_CONFIG | LYS_COMPILE_NO_DISABLED; + rc = lyplg_ext_compile_extension_instance(cctx, extp, ext); + *lyplg_ext_compile_get_options(cctx) = prev_options; + if (rc) { + return rc; + } + + return LY_SUCCESS; + +emem: + lyplg_ext_compile_log(cctx, ext, LY_LLERR, LY_EMEM, "Memory allocation failed (%s()).", __func__); + return LY_EMEM; +} + +/** + * @brief Structure schema info printer. + * + * Implementation of ::lyplg_ext_sprinter_info_clb set as ::lyext_plugin::printer_info + */ +static LY_ERR +structure_printer_info(struct lyspr_ctx *ctx, struct lysc_ext_instance *ext, ly_bool *flag) +{ + lyplg_ext_print_info_extension_instance(ctx, ext, flag); + return LY_SUCCESS; +} + +/** + * @brief Free parsed structure extension instance data. + * + * Implementation of ::lyplg_clb_parse_free_clb callback set as lyext_plugin::pfree. + */ +static void +structure_pfree(const struct ly_ctx *ctx, struct lysp_ext_instance *ext) +{ + lyplg_ext_pfree_instance_substatements(ctx, ext->substmts); + free(ext->parsed); +} + +/** + * @brief Free compiled structure extension instance data. + * + * Implementation of ::lyplg_clb_compile_free_clb callback set as lyext_plugin::cfree. + */ +static void +structure_cfree(const struct ly_ctx *ctx, struct lysc_ext_instance *ext) +{ + lyplg_ext_cfree_instance_substatements(ctx, ext->substmts); + free(ext->compiled); +} + +/** + * @brief Parse augment-structure extension instances. + * + * Implementation of ::lyplg_ext_parse_clb callback set as lyext_plugin::parse. + */ +static LY_ERR +structure_aug_parse(struct lysp_ctx *pctx, struct lysp_ext_instance *ext) +{ + LY_ERR rc; + struct lysp_stmt *stmt; + struct lysp_ext_instance_augment_structure *aug_pdata; + const struct ly_ctx *ctx = lyplg_ext_parse_get_cur_pmod(pctx)->mod->ctx; + + /* augment-structure can appear only at the top level of a YANG module or submodule */ + if ((ext->parent_stmt != LY_STMT_MODULE) && (ext->parent_stmt != LY_STMT_SUBMODULE)) { + lyplg_ext_parse_log(pctx, ext, LY_LLERR, LY_EVALID, + "Extension %s must not be used as a non top-level statement in \"%s\" statement.", ext->name, + lyplg_ext_stmt2str(ext->parent_stmt)); + return LY_EVALID; + } + + /* augment-structure must define some data-def-stmt */ + LY_LIST_FOR(ext->child, stmt) { + if (stmt->kw & LY_STMT_DATA_NODE_MASK) { + break; + } + } + if (!stmt) { + lyplg_ext_parse_log(pctx, ext, LY_LLERR, LY_EVALID, "Extension %s does not define any data-def-stmt statements.", + ext->name); + return LY_EVALID; + } + + /* allocate the storage */ + aug_pdata = calloc(1, sizeof *aug_pdata); + if (!aug_pdata) { + goto emem; + } + ext->parsed = aug_pdata; + LY_ARRAY_CREATE_GOTO(ctx, ext->substmts, 13, rc, emem); + + /* parse substatements */ + LY_ARRAY_INCREMENT(ext->substmts); + ext->substmts[0].stmt = LY_STMT_STATUS; + ext->substmts[0].storage = &aug_pdata->flags; + + LY_ARRAY_INCREMENT(ext->substmts); + ext->substmts[1].stmt = LY_STMT_DESCRIPTION; + ext->substmts[1].storage = &aug_pdata->dsc; + + LY_ARRAY_INCREMENT(ext->substmts); + ext->substmts[2].stmt = LY_STMT_REFERENCE; + ext->substmts[2].storage = &aug_pdata->ref; + + /* data-def-stmt */ + LY_ARRAY_INCREMENT(ext->substmts); + ext->substmts[3].stmt = LY_STMT_CONTAINER; + ext->substmts[3].storage = &aug_pdata->child; + + LY_ARRAY_INCREMENT(ext->substmts); + ext->substmts[4].stmt = LY_STMT_LEAF; + ext->substmts[4].storage = &aug_pdata->child; + + LY_ARRAY_INCREMENT(ext->substmts); + ext->substmts[5].stmt = LY_STMT_LEAF_LIST; + ext->substmts[5].storage = &aug_pdata->child; + + LY_ARRAY_INCREMENT(ext->substmts); + ext->substmts[6].stmt = LY_STMT_LIST; + ext->substmts[6].storage = &aug_pdata->child; + + LY_ARRAY_INCREMENT(ext->substmts); + ext->substmts[7].stmt = LY_STMT_CHOICE; + ext->substmts[7].storage = &aug_pdata->child; + + LY_ARRAY_INCREMENT(ext->substmts); + ext->substmts[8].stmt = LY_STMT_ANYDATA; + ext->substmts[8].storage = &aug_pdata->child; + + LY_ARRAY_INCREMENT(ext->substmts); + ext->substmts[9].stmt = LY_STMT_ANYXML; + ext->substmts[9].storage = &aug_pdata->child; + + LY_ARRAY_INCREMENT(ext->substmts); + ext->substmts[10].stmt = LY_STMT_USES; + ext->substmts[10].storage = &aug_pdata->child; + + /* case */ + LY_ARRAY_INCREMENT(ext->substmts); + ext->substmts[11].stmt = LY_STMT_CASE; + ext->substmts[11].storage = &aug_pdata->child; + + if ((rc = lyplg_ext_parse_extension_instance(pctx, ext))) { + return rc; + } + + /* add fake parsed augment node */ + LY_ARRAY_INCREMENT(ext->substmts); + ext->substmts[12].stmt = LY_STMT_AUGMENT; + ext->substmts[12].storage = &aug_pdata->aug; + + aug_pdata->aug = calloc(1, sizeof *aug_pdata->aug); + if (!aug_pdata->aug) { + goto emem; + } + aug_pdata->aug->nodetype = LYS_AUGMENT; + aug_pdata->aug->flags = aug_pdata->flags; + if (lydict_insert(ctx, ext->argument, 0, &aug_pdata->aug->nodeid)) { + goto emem; + } + aug_pdata->aug->child = aug_pdata->child; + /* avoid double free */ + aug_pdata->child = NULL; + + return LY_SUCCESS; + +emem: + lyplg_ext_parse_log(pctx, ext, LY_LLERR, LY_EMEM, "Memory allocation failed (%s()).", __func__); + return LY_EMEM; +} + +static LY_ERR +structure_sprinter_pnode(const struct lysp_node *UNUSED(node), const void *UNUSED(plugin_priv), + ly_bool *UNUSED(skip), const char **flags, const char **UNUSED(add_opts)) +{ + *flags = ""; + return LY_SUCCESS; +} + +static LY_ERR +structure_sprinter_cnode(const struct lysc_node *UNUSED(node), const void *UNUSED(plugin_priv), + ly_bool *UNUSED(skip), const char **flags, const char **UNUSED(add_opts)) +{ + *flags = ""; + return LY_SUCCESS; +} + +/** + * @brief Structure schema compiled tree printer. + * + * Implementation of ::lyplg_ext_sprinter_ctree_clb callback set as lyext_plugin::printer_ctree. + */ +static LY_ERR +structure_sprinter_ctree(struct lysc_ext_instance *ext, const struct lyspr_tree_ctx *ctx, + const char **UNUSED(flags), const char **UNUSED(add_opts)) +{ + LY_ERR rc; + + rc = lyplg_ext_sprinter_ctree_add_ext_nodes(ctx, ext, structure_sprinter_cnode); + return rc; +} + +/** + * @brief Structure schema parsed tree printer. + * + * Implementation of ::lyplg_ext_sprinter_ptree_clb callback set as lyext_plugin::printer_ptree. + */ +static LY_ERR +structure_sprinter_ptree(struct lysp_ext_instance *ext, const struct lyspr_tree_ctx *ctx, + const char **UNUSED(flags), const char **UNUSED(add_opts)) +{ + LY_ERR rc; + + rc = lyplg_ext_sprinter_ptree_add_ext_nodes(ctx, ext, structure_sprinter_pnode); + return rc; +} + +/** + * @brief Augment structure schema parsed tree printer. + * + * Implementation of ::lyplg_ext_sprinter_ptree_clb callback set as lyext_plugin::printer_ptree. + */ +static LY_ERR +structure_aug_sprinter_ptree(struct lysp_ext_instance *ext, const struct lyspr_tree_ctx *ctx, + const char **UNUSED(flags), const char **UNUSED(add_opts)) +{ + LY_ERR rc = LY_SUCCESS; + struct lysp_node_augment **aug; + + assert(ctx); + + aug = ext->substmts[12].storage; + rc = lyplg_ext_sprinter_ptree_add_nodes(ctx, (*aug)->child, structure_sprinter_pnode); + + return rc; +} + +/** + * @brief Augment structure schema compiled tree printer. + * + * Implementation of ::lyplg_ext_sprinter_ctree_clb callback set as lyext_plugin::printer_ctree. + */ +static LY_ERR +structure_aug_sprinter_ctree(struct lysc_ext_instance *ext, const struct lyspr_tree_ctx *ctx, const char **flags, + const char **add_opts) +{ + LY_ERR rc = LY_SUCCESS; + + LY_ARRAY_COUNT_TYPE i; + struct lysp_ext_instance *parsed_ext; + + assert(ctx); + + /* find the parsed ext structure */ + parsed_ext = ext->module->parsed->exts; + LY_ARRAY_FOR(parsed_ext, i) { + if (!strcmp(parsed_ext[i].name, "sx:augment-structure") && !strcmp(parsed_ext[i].argument, ext->argument)) { + break; + } + } + assert(i < LY_ARRAY_COUNT(parsed_ext)); + + /* for augments print the parsed tree */ + rc = structure_aug_sprinter_ptree(parsed_ext, ctx, flags, add_opts); + return rc; +} + +/** + * @brief Plugin descriptions for the structure extension + * + * Note that external plugins are supposed to use: + * + * LYPLG_EXTENSIONS = { + */ +const struct lyplg_ext_record plugins_structure[] = { + { + .module = "ietf-yang-structure-ext", + .revision = "2020-06-17", + .name = "structure", + + .plugin.id = "ly2 structure v1", + .plugin.parse = structure_parse, + .plugin.compile = structure_compile, + .plugin.printer_info = structure_printer_info, + .plugin.printer_ctree = structure_sprinter_ctree, + .plugin.printer_ptree = structure_sprinter_ptree, + .plugin.node = NULL, + .plugin.snode = NULL, + .plugin.validate = NULL, + .plugin.pfree = structure_pfree, + .plugin.cfree = structure_cfree + }, + { + .module = "ietf-yang-structure-ext", + .revision = "2020-06-17", + .name = "augment-structure", + + .plugin.id = "ly2 structure v1", + .plugin.parse = structure_aug_parse, + .plugin.compile = NULL, + .plugin.printer_info = NULL, + .plugin.printer_ctree = structure_aug_sprinter_ctree, + .plugin.printer_ptree = structure_aug_sprinter_ptree, + .plugin.node = NULL, + .plugin.snode = NULL, + .plugin.validate = NULL, + .plugin.pfree = structure_pfree, + .plugin.cfree = NULL + }, + {0} /* terminating zeroed record */ +}; 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