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/**
* @file integer.c
* @author Radek Krejci <rkrejci@cesnet.cz>
* @brief Built-in integer types plugin.
*
* Copyright (c) 2019-2021 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 /* asprintf, strdup */
#include "plugins_types.h"
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include "libyang.h"
/* additional internal headers for some useful simple macros */
#include "common.h"
#include "compat.h"
#include "plugins_internal.h" /* LY_TYPE_*_STR */
/**
* @page howtoDataLYB LYB Binary Format
* @subsection howtoDataLYBTypesInteger (u)int(8/16/32/64) (built-in)
*
* | Size (B) | Mandatory | Type | Meaning |
* | :------ | :-------: | :--: | :-----: |
* | 1/2/4/8 | yes | pointer to the specific integer type | little-endian integer value |
*/
/**
* @brief LYB value size of each integer type.
*/
static size_t integer_lyb_size[] = {
[LY_TYPE_INT8] = 1, [LY_TYPE_INT16] = 2, [LY_TYPE_INT32] = 4, [LY_TYPE_INT64] = 8,
[LY_TYPE_UINT8] = 1, [LY_TYPE_UINT16] = 2, [LY_TYPE_UINT32] = 4, [LY_TYPE_UINT64] = 8
};
LIBYANG_API_DEF LY_ERR
lyplg_type_store_int(const struct ly_ctx *ctx, const struct lysc_type *type, const void *value, size_t value_len,
uint32_t options, LY_VALUE_FORMAT format, void *UNUSED(prefix_data), uint32_t hints,
const struct lysc_node *UNUSED(ctx_node), struct lyd_value *storage, struct lys_glob_unres *UNUSED(unres),
struct ly_err_item **err)
{
LY_ERR ret = LY_SUCCESS;
int64_t num = 0;
int base = 1;
char *canon = NULL;
struct lysc_type_num *type_num = (struct lysc_type_num *)type;
/* init storage */
memset(storage, 0, sizeof *storage);
storage->realtype = type;
if (format == LY_VALUE_LYB) {
/* validation */
if (value_len != integer_lyb_size[type->basetype]) {
ret = ly_err_new(err, LY_EVALID, LYVE_DATA, NULL, NULL, "Invalid LYB signed integer value size %zu (expected %zu).",
value_len, integer_lyb_size[type->basetype]);
goto cleanup;
}
/* copy the integer and correct the byte order */
memcpy(&num, value, value_len);
num = le64toh(num);
} else {
/* check hints */
ret = lyplg_type_check_hints(hints, value, value_len, type->basetype, &base, err);
LY_CHECK_GOTO(ret, cleanup);
/* parse the integer */
switch (type->basetype) {
case LY_TYPE_INT8:
ret = lyplg_type_parse_int("int8", base, INT64_C(-128), INT64_C(127), value, value_len, &num, err);
break;
case LY_TYPE_INT16:
ret = lyplg_type_parse_int("int16", base, INT64_C(-32768), INT64_C(32767), value, value_len, &num, err);
break;
case LY_TYPE_INT32:
ret = lyplg_type_parse_int("int32", base, INT64_C(-2147483648), INT64_C(2147483647), value, value_len, &num, err);
break;
case LY_TYPE_INT64:
ret = lyplg_type_parse_int("int64", base, INT64_C(-9223372036854775807) - INT64_C(1),
INT64_C(9223372036854775807), value, value_len, &num, err);
break;
default:
LOGINT(ctx);
ret = LY_EINT;
}
LY_CHECK_GOTO(ret, cleanup);
}
/* set the value (matters for big-endian) and get the correct int64 number */
switch (type->basetype) {
case LY_TYPE_INT8:
storage->int8 = num;
num = storage->int8;
break;
case LY_TYPE_INT16:
storage->int16 = num;
num = storage->int16;
break;
case LY_TYPE_INT32:
storage->int32 = num;
num = storage->int32;
break;
case LY_TYPE_INT64:
storage->int64 = num;
num = storage->int64;
break;
default:
break;
}
if (format == LY_VALUE_CANON) {
/* store canonical value */
if (options & LYPLG_TYPE_STORE_DYNAMIC) {
ret = lydict_insert_zc(ctx, (char *)value, &storage->_canonical);
options &= ~LYPLG_TYPE_STORE_DYNAMIC;
LY_CHECK_GOTO(ret, cleanup);
} else {
ret = lydict_insert(ctx, value, value_len, &storage->_canonical);
LY_CHECK_GOTO(ret, cleanup);
}
} else {
/* generate canonical value */
switch (type->basetype) {
case LY_TYPE_INT8:
LY_CHECK_ERR_GOTO(asprintf(&canon, "%" PRId8, storage->int8) == -1, ret = LY_EMEM, cleanup);
break;
case LY_TYPE_INT16:
LY_CHECK_ERR_GOTO(asprintf(&canon, "%" PRId16, storage->int16) == -1, ret = LY_EMEM, cleanup);
break;
case LY_TYPE_INT32:
LY_CHECK_ERR_GOTO(asprintf(&canon, "%" PRId32, storage->int32) == -1, ret = LY_EMEM, cleanup);
break;
case LY_TYPE_INT64:
LY_CHECK_ERR_GOTO(asprintf(&canon, "%" PRId64, storage->int64) == -1, ret = LY_EMEM, cleanup);
break;
default:
break;
}
/* store it */
ret = lydict_insert_zc(ctx, canon, (const char **)&storage->_canonical);
LY_CHECK_GOTO(ret, cleanup);
}
/* validate range of the number */
if (type_num->range) {
ret = lyplg_type_validate_range(type->basetype, type_num->range, num, storage->_canonical,
strlen(storage->_canonical), err);
LY_CHECK_GOTO(ret, cleanup);
}
cleanup:
if (options & LYPLG_TYPE_STORE_DYNAMIC) {
free((void *)value);
}
if (ret) {
lyplg_type_free_simple(ctx, storage);
}
return ret;
}
LIBYANG_API_DEF LY_ERR
lyplg_type_compare_int(const struct lyd_value *val1, const struct lyd_value *val2)
{
if (val1->realtype != val2->realtype) {
return LY_ENOT;
}
switch (val1->realtype->basetype) {
case LY_TYPE_INT8:
if (val1->int8 != val2->int8) {
return LY_ENOT;
}
break;
case LY_TYPE_INT16:
if (val1->int16 != val2->int16) {
return LY_ENOT;
}
break;
case LY_TYPE_INT32:
if (val1->int32 != val2->int32) {
return LY_ENOT;
}
break;
case LY_TYPE_INT64:
if (val1->int64 != val2->int64) {
return LY_ENOT;
}
break;
default:
break;
}
return LY_SUCCESS;
}
LIBYANG_API_DEF const void *
lyplg_type_print_int(const struct ly_ctx *UNUSED(ctx), const struct lyd_value *value, LY_VALUE_FORMAT format,
void *UNUSED(prefix_data), ly_bool *dynamic, size_t *value_len)
{
int64_t prev_num = 0, num = 0;
void *buf;
if (format == LY_VALUE_LYB) {
switch (value->realtype->basetype) {
case LY_TYPE_INT8:
prev_num = num = value->int8;
break;
case LY_TYPE_INT16:
prev_num = num = value->int16;
break;
case LY_TYPE_INT32:
prev_num = num = value->int32;
break;
case LY_TYPE_INT64:
prev_num = num = value->int64;
break;
default:
break;
}
num = htole64(num);
if (num == prev_num) {
/* values are equal, little-endian or int8 */
*dynamic = 0;
if (value_len) {
*value_len = integer_lyb_size[value->realtype->basetype];
}
return &value->int64;
} else {
/* values differ, big-endian */
buf = calloc(1, integer_lyb_size[value->realtype->basetype]);
LY_CHECK_RET(!buf, NULL);
*dynamic = 1;
if (value_len) {
*value_len = integer_lyb_size[value->realtype->basetype];
}
memcpy(buf, &num, integer_lyb_size[value->realtype->basetype]);
return buf;
}
}
/* use the cached canonical value */
if (dynamic) {
*dynamic = 0;
}
if (value_len) {
*value_len = strlen(value->_canonical);
}
return value->_canonical;
}
LIBYANG_API_DEF LY_ERR
lyplg_type_store_uint(const struct ly_ctx *ctx, const struct lysc_type *type, const void *value, size_t value_len,
uint32_t options, LY_VALUE_FORMAT format, void *UNUSED(prefix_data), uint32_t hints,
const struct lysc_node *UNUSED(ctx_node), struct lyd_value *storage, struct lys_glob_unres *UNUSED(unres),
struct ly_err_item **err)
{
LY_ERR ret = LY_SUCCESS;
uint64_t num = 0;
int base = 0;
char *canon;
struct lysc_type_num *type_num = (struct lysc_type_num *)type;
/* init storage */
memset(storage, 0, sizeof *storage);
storage->realtype = type;
if (format == LY_VALUE_LYB) {
/* validation */
if (value_len != integer_lyb_size[type->basetype]) {
ret = ly_err_new(err, LY_EVALID, LYVE_DATA, NULL, NULL, "Invalid LYB unsigned integer value size %zu (expected %zu).",
value_len, integer_lyb_size[type->basetype]);
goto cleanup;
}
/* copy the integer and correct the byte order */
memcpy(&num, value, value_len);
num = le64toh(num);
} else {
/* check hints */
ret = lyplg_type_check_hints(hints, value, value_len, type->basetype, &base, err);
LY_CHECK_GOTO(ret, cleanup);
/* parse the integer */
switch (type->basetype) {
case LY_TYPE_UINT8:
ret = lyplg_type_parse_uint("uint8", base, UINT64_C(255), value, value_len, &num, err);
break;
case LY_TYPE_UINT16:
ret = lyplg_type_parse_uint("uint16", base, UINT64_C(65535), value, value_len, &num, err);
break;
case LY_TYPE_UINT32:
ret = lyplg_type_parse_uint("uint32", base, UINT64_C(4294967295), value, value_len, &num, err);
break;
case LY_TYPE_UINT64:
ret = lyplg_type_parse_uint("uint64", base, UINT64_C(18446744073709551615), value, value_len, &num, err);
break;
default:
LOGINT(ctx);
ret = LY_EINT;
}
LY_CHECK_GOTO(ret, cleanup);
}
/* store value, matters for big-endian */
switch (type->basetype) {
case LY_TYPE_UINT8:
storage->uint8 = num;
break;
case LY_TYPE_UINT16:
storage->uint16 = num;
break;
case LY_TYPE_UINT32:
storage->uint32 = num;
break;
case LY_TYPE_UINT64:
storage->uint64 = num;
break;
default:
break;
}
if (format == LY_VALUE_CANON) {
/* store canonical value */
if (options & LYPLG_TYPE_STORE_DYNAMIC) {
ret = lydict_insert_zc(ctx, (char *)value, &storage->_canonical);
options &= ~LYPLG_TYPE_STORE_DYNAMIC;
LY_CHECK_GOTO(ret, cleanup);
} else {
ret = lydict_insert(ctx, value, value_len, &storage->_canonical);
LY_CHECK_GOTO(ret, cleanup);
}
} else {
/* generate canonical value */
LY_CHECK_ERR_GOTO(asprintf(&canon, "%" PRIu64, num) == -1, ret = LY_EMEM, cleanup);
/* store it */
ret = lydict_insert_zc(ctx, canon, (const char **)&storage->_canonical);
LY_CHECK_GOTO(ret, cleanup);
}
/* validate range of the number */
if (type_num->range) {
ret = lyplg_type_validate_range(type->basetype, type_num->range, num, storage->_canonical,
strlen(storage->_canonical), err);
LY_CHECK_GOTO(ret, cleanup);
}
cleanup:
if (options & LYPLG_TYPE_STORE_DYNAMIC) {
free((void *)value);
}
if (ret) {
lyplg_type_free_simple(ctx, storage);
}
return ret;
}
LIBYANG_API_DEF LY_ERR
lyplg_type_compare_uint(const struct lyd_value *val1, const struct lyd_value *val2)
{
if (val1->realtype != val2->realtype) {
return LY_ENOT;
}
switch (val1->realtype->basetype) {
case LY_TYPE_UINT8:
if (val1->uint8 != val2->uint8) {
return LY_ENOT;
}
break;
case LY_TYPE_UINT16:
if (val1->uint16 != val2->uint16) {
return LY_ENOT;
}
break;
case LY_TYPE_UINT32:
if (val1->uint32 != val2->uint32) {
return LY_ENOT;
}
break;
case LY_TYPE_UINT64:
if (val1->uint64 != val2->uint64) {
return LY_ENOT;
}
break;
default:
break;
}
return LY_SUCCESS;
}
LIBYANG_API_DEF const void *
lyplg_type_print_uint(const struct ly_ctx *UNUSED(ctx), const struct lyd_value *value, LY_VALUE_FORMAT format,
void *UNUSED(prefix_data), ly_bool *dynamic, size_t *value_len)
{
uint64_t num = 0;
void *buf;
if (format == LY_VALUE_LYB) {
switch (value->realtype->basetype) {
case LY_TYPE_UINT8:
num = value->uint8;
break;
case LY_TYPE_UINT16:
num = value->uint16;
break;
case LY_TYPE_UINT32:
num = value->uint32;
break;
case LY_TYPE_UINT64:
num = value->uint64;
break;
default:
break;
}
num = htole64(num);
if (num == value->uint64) {
/* values are equal, little-endian or uint8 */
*dynamic = 0;
if (value_len) {
*value_len = integer_lyb_size[value->realtype->basetype];
}
return &value->uint64;
} else {
/* values differ, big-endian */
buf = calloc(1, integer_lyb_size[value->realtype->basetype]);
LY_CHECK_RET(!buf, NULL);
*dynamic = 1;
if (value_len) {
*value_len = integer_lyb_size[value->realtype->basetype];
}
memcpy(buf, &num, integer_lyb_size[value->realtype->basetype]);
return buf;
}
}
/* use the cached canonical value */
if (dynamic) {
*dynamic = 0;
}
if (value_len) {
*value_len = strlen(value->_canonical);
}
return value->_canonical;
}
/**
* @brief Plugin information for integer types implementation.
*
* Note that external plugins are supposed to use:
*
* LYPLG_TYPES = {
*/
const struct lyplg_type_record plugins_integer[] = {
{
.module = "",
.revision = NULL,
.name = LY_TYPE_UINT8_STR,
.plugin.id = "libyang 2 - integers, version 1",
.plugin.store = lyplg_type_store_uint,
.plugin.validate = NULL,
.plugin.compare = lyplg_type_compare_uint,
.plugin.sort = NULL,
.plugin.print = lyplg_type_print_uint,
.plugin.duplicate = lyplg_type_dup_simple,
.plugin.free = lyplg_type_free_simple,
.plugin.lyb_data_len = 1,
}, {
.module = "",
.revision = NULL,
.name = LY_TYPE_UINT16_STR,
.plugin.id = "libyang 2 - integers, version 1",
.plugin.store = lyplg_type_store_uint,
.plugin.validate = NULL,
.plugin.compare = lyplg_type_compare_uint,
.plugin.sort = NULL,
.plugin.print = lyplg_type_print_uint,
.plugin.duplicate = lyplg_type_dup_simple,
.plugin.free = lyplg_type_free_simple,
.plugin.lyb_data_len = 2,
}, {
.module = "",
.revision = NULL,
.name = LY_TYPE_UINT32_STR,
.plugin.id = "libyang 2 - integers, version 1",
.plugin.store = lyplg_type_store_uint,
.plugin.validate = NULL,
.plugin.compare = lyplg_type_compare_uint,
.plugin.sort = NULL,
.plugin.print = lyplg_type_print_uint,
.plugin.duplicate = lyplg_type_dup_simple,
.plugin.free = lyplg_type_free_simple,
.plugin.lyb_data_len = 4,
}, {
.module = "",
.revision = NULL,
.name = LY_TYPE_UINT64_STR,
.plugin.id = "libyang 2 - integers, version 1",
.plugin.store = lyplg_type_store_uint,
.plugin.validate = NULL,
.plugin.compare = lyplg_type_compare_uint,
.plugin.sort = NULL,
.plugin.print = lyplg_type_print_uint,
.plugin.duplicate = lyplg_type_dup_simple,
.plugin.free = lyplg_type_free_simple,
.plugin.lyb_data_len = 8,
}, {
.module = "",
.revision = NULL,
.name = LY_TYPE_INT8_STR,
.plugin.id = "libyang 2 - integers, version 1",
.plugin.store = lyplg_type_store_int,
.plugin.validate = NULL,
.plugin.compare = lyplg_type_compare_int,
.plugin.sort = NULL,
.plugin.print = lyplg_type_print_int,
.plugin.duplicate = lyplg_type_dup_simple,
.plugin.free = lyplg_type_free_simple,
.plugin.lyb_data_len = 1,
}, {
.module = "",
.revision = NULL,
.name = LY_TYPE_INT16_STR,
.plugin.id = "libyang 2 - integers, version 1",
.plugin.store = lyplg_type_store_int,
.plugin.validate = NULL,
.plugin.compare = lyplg_type_compare_int,
.plugin.sort = NULL,
.plugin.print = lyplg_type_print_int,
.plugin.duplicate = lyplg_type_dup_simple,
.plugin.free = lyplg_type_free_simple,
.plugin.lyb_data_len = 2,
}, {
.module = "",
.revision = NULL,
.name = LY_TYPE_INT32_STR,
.plugin.id = "libyang 2 - integers, version 1",
.plugin.store = lyplg_type_store_int,
.plugin.validate = NULL,
.plugin.compare = lyplg_type_compare_int,
.plugin.sort = NULL,
.plugin.print = lyplg_type_print_int,
.plugin.duplicate = lyplg_type_dup_simple,
.plugin.free = lyplg_type_free_simple,
.plugin.lyb_data_len = 4,
}, {
.module = "",
.revision = NULL,
.name = LY_TYPE_INT64_STR,
.plugin.id = "libyang 2 - integers, version 1",
.plugin.store = lyplg_type_store_int,
.plugin.validate = NULL,
.plugin.compare = lyplg_type_compare_int,
.plugin.sort = NULL,
.plugin.print = lyplg_type_print_int,
.plugin.duplicate = lyplg_type_dup_simple,
.plugin.free = lyplg_type_free_simple,
.plugin.lyb_data_len = 8,
},
{0}
};
|
