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gerrit.cesnet.cz / github / CESNET / libyang / 4e205e81e4c703290b79220f69965bea85e4fae9 / . / src / tree_schema_helpers.c
blob: 704095ffb8a959987ab101be1a0eddd873ec41b1 [file] [log] [blame]
/**
* @file tree_schema_helpers.c
* @author Radek Krejci <rkrejci@cesnet.cz>
* @brief Parsing and validation helper functions for schema trees
*
* Copyright (c) 2015 - 2018 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 <stddef.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include "common.h"
#include "compat.h"
#include "context.h"
#include "dict.h"
#include "hash_table.h"
#include "in.h"
#include "in_internal.h"
#include "log.h"
#include "parser_schema.h"
#include "schema_compile.h"
#include "schema_features.h"
#include "set.h"
#include "tree.h"
#include "tree_edit.h"
#include "tree_schema.h"
#include "tree_schema_internal.h"
LY_ERR
lysp_check_prefix(struct lys_parser_ctx *ctx, struct lysp_import *imports, const char *module_prefix, const char **value)
{
struct lysp_import *i;
if (module_prefix && (&module_prefix != value) && !strcmp(module_prefix, *value)) {
LOGVAL_PARSER(ctx, LYVE_REFERENCE, "Prefix \"%s\" already used as module prefix.", *value);
return LY_EEXIST;
}
LY_ARRAY_FOR(imports, struct lysp_import, i) {
if (i->prefix && (&i->prefix != value) && !strcmp(i->prefix, *value)) {
LOGVAL_PARSER(ctx, LYVE_REFERENCE, "Prefix \"%s\" already used to import \"%s\" module.", *value, i->name);
return LY_EEXIST;
}
}
return LY_SUCCESS;
}
LY_ERR
lysp_check_date(struct lys_parser_ctx *ctx, const char *date, size_t date_len, const char *stmt)
{
struct tm tm, tm_;
char *r;
LY_CHECK_ARG_RET(ctx ? PARSER_CTX(ctx) : NULL, date, LY_EINVAL);
LY_CHECK_ERR_RET(date_len != LY_REV_SIZE - 1, LOGARG(ctx ? PARSER_CTX(ctx) : NULL, date_len), LY_EINVAL);
/* check format: YYYY-MM-DD */
for (uint8_t i = 0; i < date_len; i++) {
if ((i == 4) || (i == 7)) {
if (date[i] != '-') {
goto error;
}
} else if (!isdigit(date[i])) {
goto error;
}
}
/* check content, e.g. 2018-02-31 */
memset(&tm, 0, sizeof tm);
r = strptime(date, "%Y-%m-%d", &tm);
if (!r || (r != &date[LY_REV_SIZE - 1])) {
goto error;
}
memcpy(&tm_, &tm, sizeof tm);
mktime(&tm_); /* mktime modifies tm_ if it refers invalid date */
if (tm.tm_mday != tm_.tm_mday) { /* e.g 2018-02-29 -> 2018-03-01 */
/* checking days is enough, since other errors
* have been checked by strptime() */
goto error;
}
return LY_SUCCESS;
error:
if (stmt) {
LOGVAL_PARSER(ctx, LY_VCODE_INVAL, date_len, date, stmt);
}
return LY_EINVAL;
}
void
lysp_sort_revisions(struct lysp_revision *revs)
{
LY_ARRAY_COUNT_TYPE i, r;
struct lysp_revision rev;
for (i = 1, r = 0; i < LY_ARRAY_COUNT(revs); i++) {
if (strcmp(revs[i].date, revs[r].date) > 0) {
r = i;
}
}
if (r) {
/* the newest revision is not on position 0, switch them */
memcpy(&rev, &revs[0], sizeof rev);
memcpy(&revs[0], &revs[r], sizeof rev);
memcpy(&revs[r], &rev, sizeof rev);
}
}
static const struct lysp_tpdf *
lysp_type_match(const char *name, struct lysp_node *node)
{
const struct lysp_tpdf *typedefs;
LY_ARRAY_COUNT_TYPE u;
typedefs = lysp_node_typedefs(node);
LY_ARRAY_FOR(typedefs, u) {
if (!strcmp(name, typedefs[u].name)) {
/* match */
return &typedefs[u];
}
}
return NULL;
}
static LY_DATA_TYPE
lysp_type_str2builtin(const char *name, size_t len)
{
if (len >= 4) { /* otherwise it does not match any built-in type */
if (name[0] == 'b') {
if (name[1] == 'i') {
if ((len == 6) && !strncmp(&name[2], "nary", 4)) {
return LY_TYPE_BINARY;
} else if ((len == 4) && !strncmp(&name[2], "ts", 2)) {
return LY_TYPE_BITS;
}
} else if ((len == 7) && !strncmp(&name[1], "oolean", 6)) {
return LY_TYPE_BOOL;
}
} else if (name[0] == 'd') {
if ((len == 9) && !strncmp(&name[1], "ecimal64", 8)) {
return LY_TYPE_DEC64;
}
} else if (name[0] == 'e') {
if ((len == 5) && !strncmp(&name[1], "mpty", 4)) {
return LY_TYPE_EMPTY;
} else if ((len == 11) && !strncmp(&name[1], "numeration", 10)) {
return LY_TYPE_ENUM;
}
} else if (name[0] == 'i') {
if (name[1] == 'n') {
if ((len == 4) && !strncmp(&name[2], "t8", 2)) {
return LY_TYPE_INT8;
} else if (len == 5) {
if (!strncmp(&name[2], "t16", 3)) {
return LY_TYPE_INT16;
} else if (!strncmp(&name[2], "t32", 3)) {
return LY_TYPE_INT32;
} else if (!strncmp(&name[2], "t64", 3)) {
return LY_TYPE_INT64;
}
} else if ((len == 19) && !strncmp(&name[2], "stance-identifier", 17)) {
return LY_TYPE_INST;
}
} else if ((len == 11) && !strncmp(&name[1], "dentityref", 10)) {
return LY_TYPE_IDENT;
}
} else if (name[0] == 'l') {
if ((len == 7) && !strncmp(&name[1], "eafref", 6)) {
return LY_TYPE_LEAFREF;
}
} else if (name[0] == 's') {
if ((len == 6) && !strncmp(&name[1], "tring", 5)) {
return LY_TYPE_STRING;
}
} else if (name[0] == 'u') {
if (name[1] == 'n') {
if ((len == 5) && !strncmp(&name[2], "ion", 3)) {
return LY_TYPE_UNION;
}
} else if ((name[1] == 'i') && (name[2] == 'n') && (name[3] == 't')) {
if ((len == 5) && (name[4] == '8')) {
return LY_TYPE_UINT8;
} else if (len == 6) {
if (!strncmp(&name[4], "16", 2)) {
return LY_TYPE_UINT16;
} else if (!strncmp(&name[4], "32", 2)) {
return LY_TYPE_UINT32;
} else if (!strncmp(&name[4], "64", 2)) {
return LY_TYPE_UINT64;
}
}
}
}
}
return LY_TYPE_UNKNOWN;
}
LY_ERR
lysp_type_find(const char *id, struct lysp_node *start_node, const struct lysp_module *start_module,
LY_DATA_TYPE *type, const struct lysp_tpdf **tpdf, struct lysp_node **node)
{
const char *str, *name;
struct lysp_tpdf *typedefs;
const struct lys_module *mod;
const struct lysp_module *local_module;
LY_ARRAY_COUNT_TYPE u, v;
assert(id);
assert(start_module);
assert(tpdf);
assert(node);
*node = NULL;
str = strchr(id, ':');
if (str) {
mod = ly_resolve_prefix(start_module->mod->ctx, id, str - id, LY_VALUE_SCHEMA, (void *)start_module);
local_module = mod ? mod->parsed : NULL;
name = str + 1;
*type = LY_TYPE_UNKNOWN;
} else {
local_module = start_module;
name = id;
/* check for built-in types */
*type = lysp_type_str2builtin(name, strlen(name));
if (*type) {
*tpdf = NULL;
return LY_SUCCESS;
}
}
LY_CHECK_RET(!local_module, LY_ENOTFOUND);
if (start_node && (local_module == start_module)) {
/* search typedefs in parent's nodes */
*node = start_node;
while (*node) {
*tpdf = lysp_type_match(name, *node);
if (*tpdf) {
/* match */
return LY_SUCCESS;
}
*node = (*node)->parent;
}
}
/* go to main module if in submodule */
local_module = local_module->mod->parsed;
/* search in top-level typedefs */
if (local_module->typedefs) {
LY_ARRAY_FOR(local_module->typedefs, u) {
if (!strcmp(name, local_module->typedefs[u].name)) {
/* match */
*tpdf = &local_module->typedefs[u];
return LY_SUCCESS;
}
}
}
/* search in all submodules' typedefs */
LY_ARRAY_FOR(local_module->includes, u) {
typedefs = local_module->includes[u].submodule->typedefs;
LY_ARRAY_FOR(typedefs, v) {
if (!strcmp(name, typedefs[v].name)) {
/* match */
*tpdf = &typedefs[v];
return LY_SUCCESS;
}
}
}
return LY_ENOTFOUND;
}
LY_ERR
lysp_check_enum_name(struct lys_parser_ctx *ctx, const char *name, size_t name_len)
{
if (!name_len) {
LOGVAL_PARSER(ctx, LYVE_SYNTAX_YANG, "Enum name must not be zero-length.");
return LY_EVALID;
} else if (isspace(name[0]) || isspace(name[name_len - 1])) {
LOGVAL_PARSER(ctx, LYVE_SYNTAX_YANG, "Enum name must not have any leading or trailing whitespaces (\"%.*s\").",
(int)name_len, name);
return LY_EVALID;
} else {
for (size_t u = 0; u < name_len; ++u) {
if (iscntrl(name[u])) {
LOGWRN(PARSER_CTX(ctx), "Control characters in enum name should be avoided (\"%.*s\", character number %d).",
(int)name_len, name, u + 1);
break;
}
}
}
return LY_SUCCESS;
}
/**
* @brief Check name of a new type to avoid name collisions.
*
* @param[in] ctx Parser context, module where the type is being defined is taken from here.
* @param[in] node Schema node where the type is being defined, NULL in case of a top-level typedef.
* @param[in] tpdf Typedef definition to check.
* @param[in,out] tpdfs_global Initialized hash table to store temporary data between calls. When the module's
* typedefs are checked, caller is supposed to free the table.
* @param[in,out] tpdfs_global Initialized hash table to store temporary data between calls. When the module's
* typedefs are checked, caller is supposed to free the table.
* @return LY_EEXIST in case of collision, LY_SUCCESS otherwise.
*/
static LY_ERR
lysp_check_dup_typedef(struct lys_parser_ctx *ctx, struct lysp_node *node, const struct lysp_tpdf *tpdf,
struct hash_table *tpdfs_global, struct hash_table *tpdfs_scoped)
{
struct lysp_node *parent;
uint32_t hash;
size_t name_len;
const char *name;
LY_ARRAY_COUNT_TYPE u;
const struct lysp_tpdf *typedefs;
assert(ctx);
assert(tpdf);
name = tpdf->name;
name_len = strlen(name);
if (lysp_type_str2builtin(name, name_len)) {
LOGVAL_PARSER(ctx, LYVE_SYNTAX_YANG, "Invalid name \"%s\" of typedef - name collision with a built-in type.", name);
return LY_EEXIST;
}
/* check locally scoped typedefs (avoid name shadowing) */
if (node) {
typedefs = lysp_node_typedefs(node);
LY_ARRAY_FOR(typedefs, u) {
if (&typedefs[u] == tpdf) {
break;
}
if (!strcmp(name, typedefs[u].name)) {
LOGVAL_PARSER(ctx, LYVE_SYNTAX_YANG, "Invalid name \"%s\" of typedef - name collision with sibling type.", name);
return LY_EEXIST;
}
}
/* search typedefs in parent's nodes */
for (parent = node->parent; parent; parent = parent->parent) {
if (lysp_type_match(name, parent)) {
LOGVAL_PARSER(ctx, LYVE_SYNTAX_YANG, "Invalid name \"%s\" of typedef - name collision with another scoped type.", name);
return LY_EEXIST;
}
}
}
/* check collision with the top-level typedefs */
hash = dict_hash(name, name_len);
if (node) {
lyht_insert(tpdfs_scoped, &name, hash, NULL);
if (!lyht_find(tpdfs_global, &name, hash, NULL)) {
LOGVAL_PARSER(ctx, LYVE_SYNTAX_YANG, "Invalid name \"%s\" of typedef - scoped type collide with a top-level type.", name);
return LY_EEXIST;
}
} else {
if (lyht_insert(tpdfs_global, &name, hash, NULL)) {
LOGVAL_PARSER(ctx, LYVE_SYNTAX_YANG, "Invalid name \"%s\" of typedef - name collision with another top-level type.", name);
return LY_EEXIST;
}
/* it is not necessary to test collision with the scoped types - in lysp_check_typedefs, all the
* top-level typedefs are inserted into the tables before the scoped typedefs, so the collision
* is detected in the first branch few lines above */
}
return LY_SUCCESS;
}
/**
* @brief Compare identifiers.
* Implementation of ::lyht_value_equal_cb.
*/
static ly_bool
lysp_id_cmp(void *val1, void *val2, ly_bool UNUSED(mod), void *UNUSED(cb_data))
{
return strcmp(val1, val2) == 0 ? 1 : 0;
}
LY_ERR
lysp_check_dup_typedefs(struct lys_parser_ctx *ctx, struct lysp_module *mod)
{
struct hash_table *ids_global;
struct hash_table *ids_scoped;
const struct lysp_tpdf *typedefs;
LY_ARRAY_COUNT_TYPE u, v;
uint32_t i;
LY_ERR ret = LY_SUCCESS;
/* check name collisions - typedefs and groupings */
ids_global = lyht_new(LYHT_MIN_SIZE, sizeof(char *), lysp_id_cmp, NULL, 1);
ids_scoped = lyht_new(LYHT_MIN_SIZE, sizeof(char *), lysp_id_cmp, NULL, 1);
LY_ARRAY_FOR(mod->typedefs, v) {
ret = lysp_check_dup_typedef(ctx, NULL, &mod->typedefs[v], ids_global, ids_scoped);
LY_CHECK_GOTO(ret, cleanup);
}
LY_ARRAY_FOR(mod->includes, v) {
LY_ARRAY_FOR(mod->includes[v].submodule->typedefs, u) {
ret = lysp_check_dup_typedef(ctx, NULL, &mod->includes[v].submodule->typedefs[u], ids_global, ids_scoped);
LY_CHECK_GOTO(ret, cleanup);
}
}
for (i = 0; i < ctx->tpdfs_nodes.count; ++i) {
typedefs = lysp_node_typedefs((struct lysp_node *)ctx->tpdfs_nodes.objs[i]);
LY_ARRAY_FOR(typedefs, u) {
ret = lysp_check_dup_typedef(ctx, (struct lysp_node *)ctx->tpdfs_nodes.objs[i], &typedefs[u], ids_global, ids_scoped);
LY_CHECK_GOTO(ret, cleanup);
}
}
cleanup:
lyht_free(ids_global);
lyht_free(ids_scoped);
return ret;
}
static ly_bool
ly_ptrequal_cb(void *val1_p, void *val2_p, ly_bool UNUSED(mod), void *UNUSED(cb_data))
{
void *ptr1 = *((void **)val1_p), *ptr2 = *((void **)val2_p);
return ptr1 == ptr2 ? 1 : 0;
}
LY_ERR
lysp_check_dup_features(struct lys_parser_ctx *ctx, struct lysp_module *mod)
{
LY_ARRAY_COUNT_TYPE u;
struct hash_table *ht;
struct lysp_feature *f;
uint32_t hash;
LY_ERR ret = LY_SUCCESS, r;
ht = lyht_new(1, sizeof(void *), ly_ptrequal_cb, NULL, 1);
LY_CHECK_RET(!ht, LY_EMEM);
/* add all module features into a hash table */
LY_ARRAY_FOR(mod->features, struct lysp_feature, f) {
hash = dict_hash(f->name, strlen(f->name));
r = lyht_insert(ht, &f->name, hash, NULL);
if (r == LY_EEXIST) {
LOGVAL_PARSER(ctx, LY_VCODE_DUPIDENT, f->name, "feature");
ret = LY_EVALID;
goto cleanup;
} else if (r) {
ret = r;
goto cleanup;
}
}
/* add all submodule features into a hash table */
LY_ARRAY_FOR(mod->includes, u) {
LY_ARRAY_FOR(mod->includes[u].submodule->features, struct lysp_feature, f) {
hash = dict_hash(f->name, strlen(f->name));
r = lyht_insert(ht, &f->name, hash, NULL);
if (r == LY_EEXIST) {
LOGVAL_PARSER(ctx, LY_VCODE_DUPIDENT, f->name, "feature");
ret = LY_EVALID;
goto cleanup;
} else if (r) {
ret = r;
goto cleanup;
}
}
}
cleanup:
lyht_free(ht);
return ret;
}
LY_ERR
lysp_check_dup_identities(struct lys_parser_ctx *ctx, struct lysp_module *mod)
{
LY_ARRAY_COUNT_TYPE u;
struct hash_table *ht;
struct lysp_ident *i;
uint32_t hash;
LY_ERR ret = LY_SUCCESS, r;
ht = lyht_new(1, sizeof(void *), ly_ptrequal_cb, NULL, 1);
LY_CHECK_RET(!ht, LY_EMEM);
/* add all module identities into a hash table */
LY_ARRAY_FOR(mod->identities, struct lysp_ident, i) {
hash = dict_hash(i->name, strlen(i->name));
r = lyht_insert(ht, &i->name, hash, NULL);
if (r == LY_EEXIST) {
LOGVAL_PARSER(ctx, LY_VCODE_DUPIDENT, i->name, "identity");
ret = LY_EVALID;
goto cleanup;
} else if (r) {
ret = r;
goto cleanup;
}
}
/* add all submodule identities into a hash table */
LY_ARRAY_FOR(mod->includes, u) {
LY_ARRAY_FOR(mod->includes[u].submodule->identities, struct lysp_ident, i) {
hash = dict_hash(i->name, strlen(i->name));
r = lyht_insert(ht, &i->name, hash, NULL);
if (r == LY_EEXIST) {
LOGVAL_PARSER(ctx, LY_VCODE_DUPIDENT, i->name, "identity");
ret = LY_EVALID;
goto cleanup;
} else if (r) {
ret = r;
goto cleanup;
}
}
}
cleanup:
lyht_free(ht);
return ret;
}
struct lysp_load_module_check_data {
const char *name;
const char *revision;
const char *path;
const char *submoduleof;
};
static LY_ERR
lysp_load_module_check(const struct ly_ctx *ctx, struct lysp_module *mod, struct lysp_submodule *submod, void *data)
{
struct lysp_load_module_check_data *info = data;
const char *filename, *dot, *rev, *name;
uint8_t latest_revision;
size_t len;
struct lysp_revision *revs;
name = mod ? mod->mod->name : submod->name;
revs = mod ? mod->revs : submod->revs;
latest_revision = mod ? mod->mod->latest_revision : submod->latest_revision;
if (info->name) {
/* check name of the parsed model */
if (strcmp(info->name, name)) {
LOGERR(ctx, LY_EINVAL, "Unexpected module \"%s\" parsed instead of \"%s\").", name, info->name);
return LY_EINVAL;
}
}
if (info->revision) {
/* check revision of the parsed model */
if (!revs || strcmp(info->revision, revs[0].date)) {
LOGERR(ctx, LY_EINVAL, "Module \"%s\" parsed with the wrong revision (\"%s\" instead \"%s\").", name,
revs ? revs[0].date : "none", info->revision);
return LY_EINVAL;
}
} else if (!latest_revision) {
/* do not log, we just need to drop the schema and use the latest revision from the context */
return LY_EEXIST;
}
if (submod) {
assert(info->submoduleof);
/* check that the submodule belongs-to our module */
if (strcmp(info->submoduleof, submod->mod->name)) {
LOGVAL(ctx, LYVE_REFERENCE, "Included \"%s\" submodule from \"%s\" belongs-to a different module \"%s\".",
submod->name, info->submoduleof, submod->mod->name);
return LY_EVALID;
}
/* check circular dependency */
if (submod->parsing) {
LOGVAL(ctx, LYVE_REFERENCE, "A circular dependency (include) for module \"%s\".", submod->name);
return LY_EVALID;
}
}
if (info->path) {
/* check that name and revision match filename */
filename = strrchr(info->path, '/');
if (!filename) {
filename = info->path;
} else {
filename++;
}
/* name */
len = strlen(name);
rev = strchr(filename, '@');
dot = strrchr(info->path, '.');
if (strncmp(filename, name, len) ||
((rev && (rev != &filename[len])) || (!rev && (dot != &filename[len])))) {
LOGWRN(ctx, "File name \"%s\" does not match module name \"%s\".", filename, name);
}
/* revision */
if (rev) {
len = dot - ++rev;
if (!revs || (len != LY_REV_SIZE - 1) || strncmp(revs[0].date, rev, len)) {
LOGWRN(ctx, "File name \"%s\" does not match module revision \"%s\".", filename,
revs ? revs[0].date : "none");
}
}
}
return LY_SUCCESS;
}
/**
* @brief Parse a (sub)module from a local file and add into the context.
*
* This function does not check the presence of the (sub)module in context, it should be done before calling this function.
*
* @param[in] ctx libyang context where to work.
* @param[in] name Name of the (sub)module to load.
* @param[in] revision Optional revision of the (sub)module to load, if NULL the newest revision is being loaded.
* @param[in] main_ctx Parser context of the main module in case of loading submodule.
* @param[in] main_name Main module name in case of loading submodule.
* @param[in] required Module is required so error (even if the input file not found) are important. If 0, there is some
* backup and it is actually ok if the input data are not found. However, parser reports errors even in this case.
* @param[in,out] unres Global unres structure for newly implemented modules.
* @param[out] result Parsed YANG schema tree of the requested module (struct lys_module*) or submodule (struct lysp_submodule*).
* If it is a module, it is already in the context!
* @return LY_SUCCESS on success.
* @return LY_ERECOMPILE if unres->recompile dep set needs to be recompiled, @p result is set.
* @return LY_ERR on error.
*/
static LY_ERR
lys_parse_localfile(struct ly_ctx *ctx, const char *name, const char *revision, struct lys_parser_ctx *main_ctx,
const char *main_name, ly_bool required, struct lys_glob_unres *unres, void **result)
{
struct ly_in *in;
char *filepath = NULL;
LYS_INFORMAT format;
void *mod = NULL;
LY_ERR ret = LY_SUCCESS;
struct lysp_load_module_check_data check_data = {0};
LY_CHECK_RET(lys_search_localfile(ly_ctx_get_searchdirs(ctx), !(ctx->flags & LY_CTX_DISABLE_SEARCHDIR_CWD), name, revision,
&filepath, &format));
if (!filepath) {
if (required) {
LOGERR(ctx, LY_ENOTFOUND, "Data model \"%s%s%s\" not found in local searchdirs.", name, revision ? "@" : "",
revision ? revision : "");
}
return LY_ENOTFOUND;
}
LOGVRB("Loading schema from \"%s\" file.", filepath);
/* get the (sub)module */
LY_CHECK_ERR_GOTO(ret = ly_in_new_filepath(filepath, 0, &in),
LOGERR(ctx, ret, "Unable to create input handler for filepath %s.", filepath), cleanup);
check_data.name = name;
check_data.revision = revision;
check_data.path = filepath;
check_data.submoduleof = main_name;
if (main_ctx) {
ret = lys_parse_submodule(ctx, in, format, main_ctx, lysp_load_module_check, &check_data,
(struct lysp_submodule **)&mod);
} else {
ret = lys_parse_in(ctx, in, format, lysp_load_module_check, &check_data, unres, (struct lys_module **)&mod);
}
ly_in_free(in, 1);
LY_CHECK_GOTO(ret, cleanup);
*result = mod;
/* success */
cleanup:
free(filepath);
return ret;
}
LY_ERR
lys_parse_load(struct ly_ctx *ctx, const char *name, const char *revision, struct lys_glob_unres *unres,
struct lys_module **mod)
{
const char *module_data = NULL;
LYS_INFORMAT format = LYS_IN_UNKNOWN;
void (*module_data_free)(void *module_data, void *user_data) = NULL;
struct lysp_load_module_check_data check_data = {0};
struct lys_module *ctx_latest = NULL;
struct ly_in *in;
assert(mod && unres);
/*
* try to get the module from the context
*/
if (!*mod) {
if (revision) {
/* get the specific revision */
*mod = (struct lys_module *)ly_ctx_get_module(ctx, name, revision);
} else {
/* get the requested module of the latest revision in the context */
*mod = (struct lys_module *)ly_ctx_get_module_latest(ctx, name);
if (*mod && ((*mod)->latest_revision == 1)) {
/* let us now search with callback and searchpaths to check if there is newer revision outside the context */
ctx_latest = *mod;
*mod = NULL;
}
}
}
/* we have module from the current context, circular check */
if (*mod && (*mod)->parsed->parsing) {
LOGVAL(ctx, LYVE_REFERENCE, "A circular dependency (import) for module \"%s\".", name);
*mod = NULL;
return LY_EVALID;
}
/*
* no suitable module in the context, try to load it
*/
if (!*mod) {
/* module not present in the context, get the input data and parse it */
if (!(ctx->flags & LY_CTX_PREFER_SEARCHDIRS)) {
search_clb:
if (ctx->imp_clb) {
if (ctx->imp_clb(name, revision, NULL, NULL, ctx->imp_clb_data,
&format, &module_data, &module_data_free) == LY_SUCCESS) {
LY_CHECK_RET(ly_in_new_memory(module_data, &in));
check_data.name = name;
check_data.revision = revision;
lys_create_module(ctx, in, format, implement, lysp_load_module_check, &check_data, features, unres, mod);
ly_in_free(in, 0);
if (module_data_free) {
module_data_free((void *)module_data, ctx->imp_clb_data);
}
}
}
if (!(*mod) && !(ctx->flags & LY_CTX_PREFER_SEARCHDIRS)) {
goto search_file;
}
} else {
search_file:
if (!(ctx->flags & LY_CTX_DISABLE_SEARCHDIRS)) {
/* module was not received from the callback or there is no callback set */
lys_parse_localfile(ctx, name, revision, NULL, NULL, ctx_latest ? 0 : 1, unres, (void **)mod);
}
if (!*mod && (ctx->flags & LY_CTX_PREFER_SEARCHDIRS)) {
goto search_clb;
}
}
/* update the latest_revision flag - here we have selected the latest available schema,
* consider that even the callback provides correct latest revision */
if (!*mod && ctx_latest) {
LOGVRB("Newer revision than \"%s@%s\" not found, using this as the latest revision.", ctx_latest->name,
ctx_latest->revision);
ctx_latest->latest_revision = 2;
*mod = ctx_latest;
} else if (*mod && !revision && ((*mod)->latest_revision == 1)) {
(*mod)->latest_revision = 2;
}
if (!*mod) {
LOGVAL(ctx, LYVE_REFERENCE, "Loading \"%s\" module failed.", name);
return LY_EVALID;
}
}
return LY_SUCCESS;
}
LY_ERR
lysp_check_stringchar(struct lys_parser_ctx *ctx, uint32_t c)
{
if (!is_yangutf8char(c)) {
LOGVAL_PARSER(ctx, LY_VCODE_INCHAR, c);
return LY_EVALID;
}
return LY_SUCCESS;
}
LY_ERR
lysp_check_identifierchar(struct lys_parser_ctx *ctx, uint32_t c, ly_bool first, uint8_t *prefix)
{
if (first || (prefix && ((*prefix) == 1))) {
if (!is_yangidentstartchar(c)) {
if ((c < UCHAR_MAX) && isprint(c)) {
LOGVAL_PARSER(ctx, LYVE_SYNTAX_YANG, "Invalid identifier first character '%c' (0x%04x).", (char)c, c);
} else {
LOGVAL_PARSER(ctx, LYVE_SYNTAX_YANG, "Invalid identifier first character 0x%04x.", c);
}
return LY_EVALID;
}
if (prefix) {
if (first) {
(*prefix) = 0;
} else {
(*prefix) = 2;
}
}
} else if ((c == ':') && prefix && ((*prefix) == 0)) {
(*prefix) = 1;
} else if (!is_yangidentchar(c)) {
LOGVAL_PARSER(ctx, LYVE_SYNTAX_YANG, "Invalid identifier character '%c' (0x%04x).", (char)c, c);
return LY_EVALID;
}
return LY_SUCCESS;
}
/**
* @brief Try to find the parsed submodule in main module for the given include record.
*
* @param[in] pctx main parser context
* @param[in] inc The include record with missing parsed submodule. According to include info try to find
* the corresponding parsed submodule in main module's includes.
* @return LY_SUCCESS - the parsed submodule was found and inserted into the @p inc record
* @return LY_ENOT - the parsed module was not found.
* @return LY_EVALID - YANG rule violation
*/
static LY_ERR
lysp_get_submodule(struct lys_parser_ctx *pctx, struct lysp_include *inc)
{
LY_ARRAY_COUNT_TYPE i;
struct lysp_module *main_pmod = pctx->parsed_mod->mod->parsed;
LY_ARRAY_FOR(main_pmod->includes, i) {
if (strcmp(main_pmod->includes[i].name, inc->name)) {
continue;
}
if (inc->rev[0] && strncmp(inc->rev, main_pmod->includes[i].rev, LY_REV_SIZE)) {
LOGVAL(PARSER_CTX(pctx), LYVE_REFERENCE,
"Submodule %s includes different revision (%s) of the submodule %s:%s included by the main module %s.",
((struct lysp_submodule *)pctx->parsed_mod)->name, inc->rev,
main_pmod->includes[i].name, main_pmod->includes[i].rev, main_pmod->mod->name);
return LY_EVALID;
}
inc->submodule = main_pmod->includes[i].submodule;
return inc->submodule ? LY_SUCCESS : LY_ENOT;
}
if (main_pmod->version == LYS_VERSION_1_1) {
LOGVAL(PARSER_CTX(pctx), LYVE_REFERENCE,
"YANG 1.1 requires all submodules to be included from main module. "
"But submodule \"%s\" includes submodule \"%s\" which is not included by main module \"%s\".",
((struct lysp_submodule *)pctx->parsed_mod)->name, inc->name, main_pmod->mod->name);
return LY_EVALID;
} else {
return LY_ENOT;
}
}
/**
* @brief Make the copy of the given include record into the main module.
*
* YANG 1.0 does not require the main module to include all the submodules. Therefore, parsing submodules can cause
* reallocating and extending the includes array in the main module by the submodules included only in submodules.
*
* @param[in] pctx main parser context
* @param[in] inc Include record to copy into main module taken from @p pctx.
* @return LY_ERR value.
*/
static LY_ERR
lysp_inject_submodule(struct lys_parser_ctx *pctx, struct lysp_include *inc)
{
LY_ARRAY_COUNT_TYPE i;
struct lysp_include *inc_new, *inc_tofill = NULL;
struct lysp_module *main_pmod = pctx->parsed_mod->mod->parsed;
/* first, try to find the corresponding record with missing parsed submodule */
LY_ARRAY_FOR(main_pmod->includes, i) {
if (strcmp(main_pmod->includes[i].name, inc->name)) {
continue;
}
inc_tofill = &main_pmod->includes[i];
break;
}
if (inc_tofill) {
inc_tofill->submodule = inc->submodule;
} else {
LY_ARRAY_NEW_RET(PARSER_CTX(pctx), main_pmod->includes, inc_new, LY_EMEM);
inc_new->submodule = inc->submodule;
DUP_STRING_RET(PARSER_CTX(pctx), inc->name, inc_new->name);
DUP_STRING_RET(PARSER_CTX(pctx), inc->dsc, inc_new->dsc);
DUP_STRING_RET(PARSER_CTX(pctx), inc->ref, inc_new->ref);
/* TODO duplicate extensions */
memcpy(inc_new->rev, inc->rev, LY_REV_SIZE);
inc_new->injected = 1;
}
return LY_SUCCESS;
}
LY_ERR
lysp_load_submodules(struct lys_parser_ctx *pctx, struct lysp_module *pmod)
{
LY_ARRAY_COUNT_TYPE u;
struct ly_ctx *ctx = PARSER_CTX(pctx);
LY_ARRAY_FOR(pmod->includes, u) {
LY_ERR ret = LY_SUCCESS;
struct lysp_submodule *submod = NULL;
struct lysp_include *inc = &pmod->includes[u];
if (inc->submodule) {
continue;
}
if (pmod->is_submod) {
/* try to find the submodule in the main module or its submodules */
ret = lysp_get_submodule(pctx, inc);
LY_CHECK_RET(ret && ret != LY_ENOT, ret);
LY_CHECK_RET(ret == LY_SUCCESS, LY_SUCCESS); /* submodule found in linked with the inc */
}
/* submodule not present in the main module, get the input data and parse it */
if (!(ctx->flags & LY_CTX_PREFER_SEARCHDIRS)) {
search_clb:
if (ctx->imp_clb) {
const char *submodule_data = NULL;
LYS_INFORMAT format = LYS_IN_UNKNOWN;
void (*submodule_data_free)(void *module_data, void *user_data) = NULL;
struct lysp_load_module_check_data check_data = {0};
struct ly_in *in;
if (ctx->imp_clb(pctx->parsed_mod->mod->name, NULL, inc->name,
inc->rev[0] ? inc->rev : NULL, ctx->imp_clb_data,
&format, &submodule_data, &submodule_data_free) == LY_SUCCESS) {
LY_CHECK_RET(ly_in_new_memory(submodule_data, &in));
check_data.name = inc->name;
check_data.revision = inc->rev[0] ? inc->rev : NULL;
check_data.submoduleof = pctx->parsed_mod->mod->name;
lys_parse_submodule(ctx, in, format, pctx, lysp_load_module_check, &check_data, &submod);
/* update inc pointer - parsing another (YANG 1.0) submodule can cause injecting
* submodule's include into main module, where it is missing */
inc = &pmod->includes[u];
ly_in_free(in, 0);
if (submodule_data_free) {
submodule_data_free((void *)submodule_data, ctx->imp_clb_data);
}
}
}
if (!submod && !(ctx->flags & LY_CTX_PREFER_SEARCHDIRS)) {
goto search_file;
}
} else {
search_file:
if (!(ctx->flags & LY_CTX_DISABLE_SEARCHDIRS)) {
/* submodule was not received from the callback or there is no callback set */
lys_parse_localfile(ctx, inc->name, inc->rev[0] ? inc->rev : NULL, pctx,
pctx->parsed_mod->mod->name, 1, NULL, (void **)&submod);
/* update inc pointer - parsing another (YANG 1.0) submodule can cause injecting
* submodule's include into main module, where it is missing */
inc = &pmod->includes[u];
}
if (!submod && (ctx->flags & LY_CTX_PREFER_SEARCHDIRS)) {
goto search_clb;
}
}
if (submod) {
if (!inc->rev[0] && (submod->latest_revision == 1)) {
/* update the latest_revision flag - here we have selected the latest available schema,
* consider that even the callback provides correct latest revision */
submod->latest_revision = 2;
}
inc->submodule = submod;
if (ret == LY_ENOT) {
/* the submodule include is not present in YANG 1.0 main module - add it there */
LY_CHECK_RET(lysp_inject_submodule(pctx, &pmod->includes[u]));
}
}
if (!inc->submodule) {
LOGVAL(ctx, LYVE_REFERENCE, "Including \"%s\" submodule into \"%s\" failed.", inc->name,
pctx->parsed_mod->is_submod ? ((struct lysp_submodule *)pctx->parsed_mod)->name : pctx->parsed_mod->mod->name);
return LY_EVALID;
}
}
return LY_SUCCESS;
}
API const struct lysc_when *
lysc_has_when(const struct lysc_node *node)
{
struct lysc_when **when;
if (!node) {
return NULL;
}
do {
when = lysc_node_when(node);
if (when) {
return when[0];
}
node = node->parent;
} while (node && (node->nodetype & (LYS_CASE | LYS_CHOICE)));
return NULL;
}
API const char *
lys_nodetype2str(uint16_t nodetype)
{
switch (nodetype) {
case LYS_CONTAINER:
return "container";
case LYS_CHOICE:
return "choice";
case LYS_LEAF:
return "leaf";
case LYS_LEAFLIST:
return "leaf-list";
case LYS_LIST:
return "list";
case LYS_ANYXML:
return "anyxml";
case LYS_ANYDATA:
return "anydata";
case LYS_CASE:
return "case";
case LYS_RPC:
return "RPC";
case LYS_ACTION:
return "action";
case LYS_NOTIF:
return "notification";
case LYS_USES:
return "uses";
default:
return "unknown";
}
}
API enum ly_stmt
lys_nodetype2stmt(uint16_t nodetype)
{
switch (nodetype) {
case LYS_CONTAINER:
return LY_STMT_CONTAINER;
case LYS_CHOICE:
return LY_STMT_CHOICE;
case LYS_LEAF:
return LY_STMT_LEAF;
case LYS_LEAFLIST:
return LY_STMT_LEAF_LIST;
case LYS_LIST:
return LY_STMT_LIST;
case LYS_ANYXML:
return LY_STMT_ANYXML;
case LYS_ANYDATA:
return LY_STMT_ANYDATA;
case LYS_CASE:
return LY_STMT_CASE;
case LYS_RPC:
return LY_STMT_RPC;
case LYS_ACTION:
return LY_STMT_ACTION;
case LYS_NOTIF:
return LY_STMT_NOTIFICATION;
case LYS_USES:
return LY_STMT_USES;
case LYS_INPUT:
return LY_STMT_INPUT;
case LYS_OUTPUT:
return LY_STMT_OUTPUT;
default:
return LY_STMT_NONE;
}
}
const char *
lys_datatype2str(LY_DATA_TYPE basetype)
{
switch (basetype) {
case LY_TYPE_BINARY:
return "binary";
case LY_TYPE_UINT8:
return "uint8";
case LY_TYPE_UINT16:
return "uint16";
case LY_TYPE_UINT32:
return "uint32";
case LY_TYPE_UINT64:
return "uint64";
case LY_TYPE_STRING:
return "string";
case LY_TYPE_BITS:
return "bits";
case LY_TYPE_BOOL:
return "boolean";
case LY_TYPE_DEC64:
return "decimal64";
case LY_TYPE_EMPTY:
return "empty";
case LY_TYPE_ENUM:
return "enumeration";
case LY_TYPE_IDENT:
return "identityref";
case LY_TYPE_INST:
return "instance-identifier";
case LY_TYPE_LEAFREF:
return "leafref";
case LY_TYPE_UNION:
return "union";
case LY_TYPE_INT8:
return "int8";
case LY_TYPE_INT16:
return "int16";
case LY_TYPE_INT32:
return "int32";
case LY_TYPE_INT64:
return "int64";
default:
return "unknown";
}
}
API const struct lysp_tpdf *
lysp_node_typedefs(const struct lysp_node *node)
{
switch (node->nodetype) {
case LYS_CONTAINER:
return ((struct lysp_node_container *)node)->typedefs;
case LYS_LIST:
return ((struct lysp_node_list *)node)->typedefs;
case LYS_GROUPING:
return ((struct lysp_node_grp *)node)->typedefs;
case LYS_RPC:
case LYS_ACTION:
return ((struct lysp_node_action *)node)->typedefs;
case LYS_INPUT:
case LYS_OUTPUT:
return ((struct lysp_node_action_inout *)node)->typedefs;
case LYS_NOTIF:
return ((struct lysp_node_notif *)node)->typedefs;
default:
return NULL;
}
}
API const struct lysp_node_grp *
lysp_node_groupings(const struct lysp_node *node)
{
switch (node->nodetype) {
case LYS_CONTAINER:
return ((struct lysp_node_container *)node)->groupings;
case LYS_LIST:
return ((struct lysp_node_list *)node)->groupings;
case LYS_GROUPING:
return ((struct lysp_node_grp *)node)->groupings;
case LYS_RPC:
case LYS_ACTION:
return ((struct lysp_node_action *)node)->groupings;
case LYS_INPUT:
case LYS_OUTPUT:
return ((struct lysp_node_action_inout *)node)->groupings;
case LYS_NOTIF:
return ((struct lysp_node_notif *)node)->groupings;
default:
return NULL;
}
}
struct lysp_node_action **
lysp_node_actions_p(struct lysp_node *node)
{
assert(node);
switch (node->nodetype) {
case LYS_CONTAINER:
return &((struct lysp_node_container *)node)->actions;
case LYS_LIST:
return &((struct lysp_node_list *)node)->actions;
case LYS_GROUPING:
return &((struct lysp_node_grp *)node)->actions;
case LYS_AUGMENT:
return &((struct lysp_node_augment *)node)->actions;
default:
return NULL;
}
}
API const struct lysp_node_action *
lysp_node_actions(const struct lysp_node *node)
{
struct lysp_node_action **actions;
actions = lysp_node_actions_p((struct lysp_node *)node);
if (actions) {
return *actions;
} else {
return NULL;
}
}
struct lysp_node_notif **
lysp_node_notifs_p(struct lysp_node *node)
{
assert(node);
switch (node->nodetype) {
case LYS_CONTAINER:
return &((struct lysp_node_container *)node)->notifs;
case LYS_LIST:
return &((struct lysp_node_list *)node)->notifs;
case LYS_GROUPING:
return &((struct lysp_node_grp *)node)->notifs;
case LYS_AUGMENT:
return &((struct lysp_node_augment *)node)->notifs;
default:
return NULL;
}
}
API const struct lysp_node_notif *
lysp_node_notifs(const struct lysp_node *node)
{
struct lysp_node_notif **notifs;
notifs = lysp_node_notifs_p((struct lysp_node *)node);
if (notifs) {
return *notifs;
} else {
return NULL;
}
}
struct lysp_node **
lysp_node_child_p(struct lysp_node *node)
{
assert(node);
switch (node->nodetype) {
case LYS_CONTAINER:
return &((struct lysp_node_container *)node)->child;
case LYS_CHOICE:
return &((struct lysp_node_choice *)node)->child;
case LYS_LIST:
return &((struct lysp_node_list *)node)->child;
case LYS_CASE:
return &((struct lysp_node_case *)node)->child;
case LYS_GROUPING:
return &((struct lysp_node_grp *)node)->child;
case LYS_AUGMENT:
return &((struct lysp_node_augment *)node)->child;
case LYS_INPUT:
case LYS_OUTPUT:
return &((struct lysp_node_action_inout *)node)->child;
case LYS_NOTIF:
return &((struct lysp_node_notif *)node)->child;
default:
return NULL;
}
}
API const struct lysp_node *
lysp_node_child(const struct lysp_node *node)
{
struct lysp_node **child;
if (!node) {
return NULL;
}
child = lysp_node_child_p((struct lysp_node *)node);
if (child) {
return *child;
} else {
return NULL;
}
}
struct lysp_restr **
lysp_node_musts_p(const struct lysp_node *node)
{
if (!node) {
return NULL;
}
switch (node->nodetype) {
case LYS_CONTAINER:
return &((struct lysp_node_container *)node)->musts;
case LYS_LEAF:
return &((struct lysp_node_leaf *)node)->musts;
case LYS_LEAFLIST:
return &((struct lysp_node_leaflist *)node)->musts;
case LYS_LIST:
return &((struct lysp_node_list *)node)->musts;
case LYS_ANYXML:
case LYS_ANYDATA:
return &((struct lysp_node_anydata *)node)->musts;
case LYS_NOTIF:
return &((struct lysp_node_notif *)node)->musts;
case LYS_INPUT:
case LYS_OUTPUT:
return &((struct lysp_node_action_inout *)node)->musts;
default:
return NULL;
}
}
struct lysp_restr *
lysp_node_musts(const struct lysp_node *node)
{
struct lysp_restr **musts;
musts = lysp_node_musts_p(node);
if (musts) {
return *musts;
} else {
return NULL;
}
}
struct lysp_when **
lysp_node_when_p(const struct lysp_node *node)
{
if (!node) {
return NULL;
}
switch (node->nodetype) {
case LYS_CONTAINER:
return &((struct lysp_node_container *)node)->when;
case LYS_CHOICE:
return &((struct lysp_node_choice *)node)->when;
case LYS_LEAF:
return &((struct lysp_node_leaf *)node)->when;
case LYS_LEAFLIST:
return &((struct lysp_node_leaflist *)node)->when;
case LYS_LIST:
return &((struct lysp_node_list *)node)->when;
case LYS_ANYXML:
case LYS_ANYDATA:
return &((struct lysp_node_anydata *)node)->when;
case LYS_CASE:
return &((struct lysp_node_case *)node)->when;
case LYS_USES:
return &((struct lysp_node_uses *)node)->when;
case LYS_AUGMENT:
return &((struct lysp_node_augment *)node)->when;
default:
return NULL;
}
}
struct lysp_when *
lysp_node_when(const struct lysp_node *node)
{
struct lysp_when **when;
when = lysp_node_when_p(node);
if (when) {
return *when;
} else {
return NULL;
}
}
struct lysc_node_action **
lysc_node_actions_p(struct lysc_node *node)
{
assert(node);
switch (node->nodetype) {
case LYS_CONTAINER:
return &((struct lysc_node_container *)node)->actions;
case LYS_LIST:
return &((struct lysc_node_list *)node)->actions;
default:
return NULL;
}
}
API const struct lysc_node_action *
lysc_node_actions(const struct lysc_node *node)
{
struct lysc_node_action **actions;
actions = lysc_node_actions_p((struct lysc_node *)node);
if (actions) {
return *actions;
} else {
return NULL;
}
}
struct lysc_node_notif **
lysc_node_notifs_p(struct lysc_node *node)
{
assert(node);
switch (node->nodetype) {
case LYS_CONTAINER:
return &((struct lysc_node_container *)node)->notifs;
case LYS_LIST:
return &((struct lysc_node_list *)node)->notifs;
default:
return NULL;
}
}
API const struct lysc_node_notif *
lysc_node_notifs(const struct lysc_node *node)
{
struct lysc_node_notif **notifs;
notifs = lysc_node_notifs_p((struct lysc_node *)node);
if (notifs) {
return *notifs;
} else {
return NULL;
}
}
struct lysc_node **
lysc_node_child_p(const struct lysc_node *node)
{
assert(node && !(node->nodetype & (LYS_RPC | LYS_ACTION)));
switch (node->nodetype) {
case LYS_CONTAINER:
return &((struct lysc_node_container *)node)->child;
case LYS_CHOICE:
return (struct lysc_node **)&((struct lysc_node_choice *)node)->cases;
case LYS_CASE:
return &((struct lysc_node_case *)node)->child;
case LYS_LIST:
return &((struct lysc_node_list *)node)->child;
case LYS_INPUT:
case LYS_OUTPUT:
return &((struct lysc_node_action_inout *)node)->child;
case LYS_NOTIF:
return &((struct lysc_node_notif *)node)->child;
default:
return NULL;
}
}
API const struct lysc_node *
lysc_node_child(const struct lysc_node *node)
{
struct lysc_node **child;
if (!node) {
return NULL;
}
if (node->nodetype & (LYS_RPC | LYS_ACTION)) {
return &((struct lysc_node_action *)node)->input.node;
} else {
child = lysc_node_child_p(node);
if (child) {
return *child;
}
}
return NULL;
}
struct lysc_must **
lysc_node_musts_p(const struct lysc_node *node)
{
if (!node) {
return NULL;
}
switch (node->nodetype) {
case LYS_CONTAINER:
return &((struct lysc_node_container *)node)->musts;
case LYS_LEAF:
return &((struct lysc_node_leaf *)node)->musts;
case LYS_LEAFLIST:
return &((struct lysc_node_leaflist *)node)->musts;
case LYS_LIST:
return &((struct lysc_node_list *)node)->musts;
case LYS_ANYXML:
case LYS_ANYDATA:
return &((struct lysc_node_anydata *)node)->musts;
case LYS_NOTIF:
return &((struct lysc_node_notif *)node)->musts;
case LYS_INPUT:
case LYS_OUTPUT:
return &((struct lysc_node_action_inout *)node)->musts;
default:
return NULL;
}
}
API struct lysc_must *
lysc_node_musts(const struct lysc_node *node)
{
struct lysc_must **must_p;
must_p = lysc_node_musts_p(node);
if (must_p) {
return *must_p;
} else {
return NULL;
}
}
struct lysc_when ***
lysc_node_when_p(const struct lysc_node *node)
{
if (!node) {
return NULL;
}
switch (node->nodetype) {
case LYS_CONTAINER:
return &((struct lysc_node_container *)node)->when;
case LYS_CHOICE:
return &((struct lysc_node_choice *)node)->when;
case LYS_LEAF:
return &((struct lysc_node_leaf *)node)->when;
case LYS_LEAFLIST:
return &((struct lysc_node_leaflist *)node)->when;
case LYS_LIST:
return &((struct lysc_node_list *)node)->when;
case LYS_ANYXML:
case LYS_ANYDATA:
return &((struct lysc_node_anydata *)node)->when;
case LYS_CASE:
return &((struct lysc_node_case *)node)->when;
case LYS_NOTIF:
return &((struct lysc_node_notif *)node)->when;
case LYS_RPC:
case LYS_ACTION:
return &((struct lysc_node_action *)node)->when;
default:
return NULL;
}
}
API struct lysc_when **
lysc_node_when(const struct lysc_node *node)
{
struct lysc_when ***when_p;
when_p = lysc_node_when_p(node);
if (when_p) {
return *when_p;
} else {
return NULL;
}
}
struct lys_module *
lysp_find_module(struct ly_ctx *ctx, const struct lysp_module *mod)
{
for (uint32_t u = 0; u < ctx->list.count; ++u) {
if (((struct lys_module *)ctx->list.objs[u])->parsed == mod) {
return (struct lys_module *)ctx->list.objs[u];
}
}
return NULL;
}
enum ly_stmt
lysp_match_kw(struct ly_in *in, uint64_t *indent)
{
/**
* @brief Move the input by COUNT items. Also updates the indent value in yang parser context
* @param[in] COUNT number of items for which the DATA pointer is supposed to move on.
*
* *INDENT-OFF*
*/
#define MOVE_IN(COUNT) \
ly_in_skip(in, COUNT); \
if (indent) { \
(*indent)+=COUNT; \
}
#define IF_KW(STR, LEN, STMT) \
if (!strncmp(in->current, STR, LEN)) { \
MOVE_IN(LEN); \
(*kw)=STMT; \
}
#define IF_KW_PREFIX(STR, LEN) \
if (!strncmp(in->current, STR, LEN)) { \
MOVE_IN(LEN);
#define IF_KW_PREFIX_END \
}
const char *start = in->current;
enum ly_stmt result = LY_STMT_NONE;
enum ly_stmt *kw = &result;
/* read the keyword itself */
switch (in->current[0]) {
case 'a':
MOVE_IN(1);
IF_KW("rgument", 7, LY_STMT_ARGUMENT)
else IF_KW("ugment", 6, LY_STMT_AUGMENT)
else IF_KW("ction", 5, LY_STMT_ACTION)
else IF_KW_PREFIX("ny", 2)
IF_KW("data", 4, LY_STMT_ANYDATA)
else IF_KW("xml", 3, LY_STMT_ANYXML)
IF_KW_PREFIX_END
break;
case 'b':
MOVE_IN(1);
IF_KW("ase", 3, LY_STMT_BASE)
else IF_KW("elongs-to", 9, LY_STMT_BELONGS_TO)
else IF_KW("it", 2, LY_STMT_BIT)
break;
case 'c':
MOVE_IN(1);
IF_KW("ase", 3, LY_STMT_CASE)
else IF_KW("hoice", 5, LY_STMT_CHOICE)
else IF_KW_PREFIX("on", 2)
IF_KW("fig", 3, LY_STMT_CONFIG)
else IF_KW_PREFIX("ta", 2)
IF_KW("ct", 2, LY_STMT_CONTACT)
else IF_KW("iner", 4, LY_STMT_CONTAINER)
IF_KW_PREFIX_END
IF_KW_PREFIX_END
break;
case 'd':
MOVE_IN(1);
IF_KW_PREFIX("e", 1)
IF_KW("fault", 5, LY_STMT_DEFAULT)
else IF_KW("scription", 9, LY_STMT_DESCRIPTION)
else IF_KW_PREFIX("viat", 4)
IF_KW("e", 1, LY_STMT_DEVIATE)
else IF_KW("ion", 3, LY_STMT_DEVIATION)
IF_KW_PREFIX_END
IF_KW_PREFIX_END
break;
case 'e':
MOVE_IN(1);
IF_KW("num", 3, LY_STMT_ENUM)
else IF_KW_PREFIX("rror-", 5)
IF_KW("app-tag", 7, LY_STMT_ERROR_APP_TAG)
else IF_KW("message", 7, LY_STMT_ERROR_MESSAGE)
IF_KW_PREFIX_END
else IF_KW("xtension", 8, LY_STMT_EXTENSION)
break;
case 'f':
MOVE_IN(1);
IF_KW("eature", 6, LY_STMT_FEATURE)
else IF_KW("raction-digits", 14, LY_STMT_FRACTION_DIGITS)
break;
case 'g':
MOVE_IN(1);
IF_KW("rouping", 7, LY_STMT_GROUPING)
break;
case 'i':
MOVE_IN(1);
IF_KW("dentity", 7, LY_STMT_IDENTITY)
else IF_KW("f-feature", 9, LY_STMT_IF_FEATURE)
else IF_KW("mport", 5, LY_STMT_IMPORT)
else IF_KW_PREFIX("n", 1)
IF_KW("clude", 5, LY_STMT_INCLUDE)
else IF_KW("put", 3, LY_STMT_INPUT)
IF_KW_PREFIX_END
break;
case 'k':
MOVE_IN(1);
IF_KW("ey", 2, LY_STMT_KEY)
break;
case 'l':
MOVE_IN(1);
IF_KW_PREFIX("e", 1)
IF_KW("af-list", 7, LY_STMT_LEAF_LIST)
else IF_KW("af", 2, LY_STMT_LEAF)
else IF_KW("ngth", 4, LY_STMT_LENGTH)
IF_KW_PREFIX_END
else IF_KW("ist", 3, LY_STMT_LIST)
break;
case 'm':
MOVE_IN(1);
IF_KW_PREFIX("a", 1)
IF_KW("ndatory", 7, LY_STMT_MANDATORY)
else IF_KW("x-elements", 10, LY_STMT_MAX_ELEMENTS)
IF_KW_PREFIX_END
else IF_KW("in-elements", 11, LY_STMT_MIN_ELEMENTS)
else IF_KW("ust", 3, LY_STMT_MUST)
else IF_KW_PREFIX("od", 2)
IF_KW("ule", 3, LY_STMT_MODULE)
else IF_KW("ifier", 5, LY_STMT_MODIFIER)
IF_KW_PREFIX_END
break;
case 'n':
MOVE_IN(1);
IF_KW("amespace", 8, LY_STMT_NAMESPACE)
else IF_KW("otification", 11, LY_STMT_NOTIFICATION)
break;
case 'o':
MOVE_IN(1);
IF_KW_PREFIX("r", 1)
IF_KW("dered-by", 8, LY_STMT_ORDERED_BY)
else IF_KW("ganization", 10, LY_STMT_ORGANIZATION)
IF_KW_PREFIX_END
else IF_KW("utput", 5, LY_STMT_OUTPUT)
break;
case 'p':
MOVE_IN(1);
IF_KW("ath", 3, LY_STMT_PATH)
else IF_KW("attern", 6, LY_STMT_PATTERN)
else IF_KW("osition", 7, LY_STMT_POSITION)
else IF_KW_PREFIX("re", 2)
IF_KW("fix", 3, LY_STMT_PREFIX)
else IF_KW("sence", 5, LY_STMT_PRESENCE)
IF_KW_PREFIX_END
break;
case 'r':
MOVE_IN(1);
IF_KW("ange", 4, LY_STMT_RANGE)
else IF_KW_PREFIX("e", 1)
IF_KW_PREFIX("f", 1)
IF_KW("erence", 6, LY_STMT_REFERENCE)
else IF_KW("ine", 3, LY_STMT_REFINE)
IF_KW_PREFIX_END
else IF_KW("quire-instance", 14, LY_STMT_REQUIRE_INSTANCE)
else IF_KW("vision-date", 11, LY_STMT_REVISION_DATE)
else IF_KW("vision", 6, LY_STMT_REVISION)
IF_KW_PREFIX_END
else IF_KW("pc", 2, LY_STMT_RPC)
break;
case 's':
MOVE_IN(1);
IF_KW("tatus", 5, LY_STMT_STATUS)
else IF_KW("ubmodule", 8, LY_STMT_SUBMODULE)
break;
case 't':
MOVE_IN(1);
IF_KW("ypedef", 6, LY_STMT_TYPEDEF)
else IF_KW("ype", 3, LY_STMT_TYPE)
break;
case 'u':
MOVE_IN(1);
IF_KW_PREFIX("ni", 2)
IF_KW("que", 3, LY_STMT_UNIQUE)
else IF_KW("ts", 2, LY_STMT_UNITS)
IF_KW_PREFIX_END
else IF_KW("ses", 3, LY_STMT_USES)
break;
case 'v':
MOVE_IN(1);
IF_KW("alue", 4, LY_STMT_VALUE)
break;
case 'w':
MOVE_IN(1);
IF_KW("hen", 3, LY_STMT_WHEN)
break;
case 'y':
MOVE_IN(1);
IF_KW("ang-version", 11, LY_STMT_YANG_VERSION)
else IF_KW("in-element", 10, LY_STMT_YIN_ELEMENT)
break;
default:
/* if indent is not NULL we are matching keyword from YANG data */
if (indent) {
if (in->current[0] == ';') {
MOVE_IN(1);
*kw = LY_STMT_SYNTAX_SEMICOLON;
} else if (in->current[0] == '{') {
MOVE_IN(1);
*kw = LY_STMT_SYNTAX_LEFT_BRACE;
} else if (in->current[0] == '}') {
MOVE_IN(1);
*kw = LY_STMT_SYNTAX_RIGHT_BRACE;
}
}
break;
}
if ((*kw < LY_STMT_SYNTAX_SEMICOLON) && isalnum(in->current[0])) {
/* the keyword is not terminated */
*kw = LY_STMT_NONE;
in->current = start;
}
#undef IF_KW
#undef IF_KW_PREFIX
#undef IF_KW_PREFIX_END
#undef MOVE_IN
/* *INDENT-ON* */
return result;
}
LY_ERR
lysp_ext_find_definition(const struct ly_ctx *ctx, const struct lysp_ext_instance *ext, const struct lys_module **ext_mod,
struct lysp_ext **ext_def)
{
const char *tmp, *name, *prefix;
size_t pref_len, name_len;
LY_ARRAY_COUNT_TYPE v;
const struct lys_module *mod = NULL;
assert(ext_def);
*ext_def = NULL;
if (ext_mod) {
*ext_mod = NULL;
}
/* parse the prefix, the nodeid was previously already parsed and checked */
tmp = ext->name;
ly_parse_nodeid(&tmp, &prefix, &pref_len, &name, &name_len);
/* get module where the extension definition should be placed */
mod = ly_resolve_prefix(ctx, prefix, pref_len, ext->format, ext->prefix_data);
if (!mod) {
LOGVAL(ctx, LYVE_REFERENCE, "Invalid prefix \"%.*s\" used for extension instance identifier.", (int)pref_len, prefix);
return LY_EVALID;
} else if (!mod->parsed->extensions) {
LOGVAL(ctx, LYVE_REFERENCE, "Extension instance \"%s\" refers \"%s\" module that does not contain extension definitions.",
ext->name, mod->name);
return LY_EVALID;
}
/* find the parsed extension definition there */
LY_ARRAY_FOR(mod->parsed->extensions, v) {
if (!strcmp(name, mod->parsed->extensions[v].name)) {
*ext_def = &mod->parsed->extensions[v];
break;
}
}
if (!(*ext_def)) {
LOGVAL(ctx, LYVE_REFERENCE, "Extension definition of extension instance \"%s\" not found.", ext->name);
return LY_EVALID;
}
if (ext_mod) {
*ext_mod = mod;
}
return LY_SUCCESS;
}
LY_ERR
lysp_ext_instance_resolve_argument(struct ly_ctx *ctx, struct lysp_ext_instance *ext_p, struct lysp_ext *ext_def)
{
if (!ext_def->argname || ext_p->argument) {
/* nothing to do */
return LY_SUCCESS;
}
if (ext_p->format == LY_VALUE_XML) {
/* Schema was parsed from YIN and an argument is expected, ... */
struct lysp_stmt *stmt = NULL;
if (ext_def->flags & LYS_YINELEM_TRUE) {
/* ... argument was the first XML child element */
for (stmt = ext_p->child; stmt && (stmt->flags & LYS_YIN_ATTR); stmt = stmt->next) {}
if (stmt) {
const char *arg, *ext, *name_arg, *name_ext, *prefix_arg, *prefix_ext;
size_t name_arg_len, name_ext_len, prefix_arg_len, prefix_ext_len;
stmt = ext_p->child;
arg = stmt->stmt;
ly_parse_nodeid(&arg, &prefix_arg, &prefix_arg_len, &name_arg, &name_arg_len);
if (ly_strncmp(ext_def->argname, name_arg, name_arg_len)) {
LOGVAL(ctx, LYVE_SEMANTICS, "Extension instance \"%s\" expects argument element \"%s\" as its first XML child, "
"but \"%.*s\" element found.", ext_p->name, ext_def->argname, (int)name_arg_len, name_arg);
return LY_EVALID;
}
/* check namespace - all the extension instances must be qualified and argument element is expected in the same
* namespace. Do not check just prefixes, there can be different prefixes pointing to the same namespace */
ext = ext_p->name; /* include prefix */
ly_parse_nodeid(&ext, &prefix_ext, &prefix_ext_len, &name_ext, &name_ext_len);
if (ly_resolve_prefix(ctx, prefix_ext, prefix_ext_len, ext_p->format, ext_p->prefix_data) !=
ly_resolve_prefix(ctx, prefix_arg, prefix_arg_len, stmt->format, stmt->prefix_data)) {
LOGVAL(ctx, LYVE_SEMANTICS, "Extension instance \"%s\" element and its argument element \"%s\" are "
"expected in the same namespace, but they differ.", ext_p->name, ext_def->argname);
return LY_EVALID;
}
}
} else {
/* ... argument was one of the XML attributes which are represented as child stmt
* with LYS_YIN_ATTR flag */
for (stmt = ext_p->child; stmt && (stmt->flags & LYS_YIN_ATTR); stmt = stmt->next) {
if (!strcmp(stmt->stmt, ext_def->argname)) {
/* this is the extension's argument */
break;
}
}
}
if (stmt) {
LY_CHECK_RET(lydict_insert(ctx, stmt->arg, 0, &ext_p->argument));
stmt->flags |= LYS_YIN_ARGUMENT;
}
}
if (!ext_p->argument) {
/* missing extension's argument */
LOGVAL(ctx, LYVE_SEMANTICS, "Extension instance \"%s\" misses argument %s\"%s\".",
ext_p->name, (ext_def->flags & LYS_YINELEM_TRUE) ? "element " : "", ext_def->argname);
return LY_EVALID;
}
return LY_SUCCESS;
}
LY_ARRAY_COUNT_TYPE
lysp_ext_instance_iter(struct lysp_ext_instance *ext, LY_ARRAY_COUNT_TYPE index, enum ly_stmt substmt)
{
LY_CHECK_ARG_RET(NULL, ext, LY_EINVAL);
for ( ; index < LY_ARRAY_COUNT(ext); index++) {
if (ext[index].parent_stmt == substmt) {
return index;
}
}
return LY_ARRAY_COUNT(ext);
}
const struct lysc_node *
lysc_data_node(const struct lysc_node *schema)
{
const struct lysc_node *parent;
parent = schema;
while (parent && !(parent->nodetype & (LYS_CONTAINER | LYS_LEAF | LYS_LEAFLIST | LYS_LIST | LYS_ANYDATA | LYS_RPC |
LYS_ACTION | LYS_NOTIF))) {
parent = parent->parent;
}
return parent;
}