Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 1 | /** |
| 2 | * @file path.c |
| 3 | * @author Michal Vasko <mvasko@cesnet.cz> |
| 4 | * @brief Path functions |
| 5 | * |
| 6 | * Copyright (c) 2020 CESNET, z.s.p.o. |
| 7 | * |
| 8 | * This source code is licensed under BSD 3-Clause License (the "License"). |
| 9 | * You may not use this file except in compliance with the License. |
| 10 | * You may obtain a copy of the License at |
| 11 | * |
| 12 | * https://opensource.org/licenses/BSD-3-Clause |
| 13 | */ |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 14 | #include "path.h" |
| 15 | |
| 16 | #include <assert.h> |
| 17 | #include <ctype.h> |
| 18 | #include <stdlib.h> |
Radek Krejci | ad97c5f | 2020-06-30 09:19:28 +0200 | [diff] [blame] | 19 | #include <string.h> |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 20 | |
| 21 | #include "common.h" |
Michal Vasko | 5aa44c0 | 2020-06-29 11:47:02 +0200 | [diff] [blame] | 22 | #include "compat.h" |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 23 | #include "log.h" |
| 24 | #include "plugins_types.h" |
Michal Vasko | 40c158c | 2021-04-28 17:01:03 +0200 | [diff] [blame] | 25 | #include "schema_compile.h" |
Radek Krejci | ad97c5f | 2020-06-30 09:19:28 +0200 | [diff] [blame] | 26 | #include "set.h" |
Michal Vasko | 4c583e8 | 2020-07-17 12:16:14 +0200 | [diff] [blame] | 27 | #include "tree.h" |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 28 | #include "tree_data_internal.h" |
Radek Krejci | 859a15a | 2021-03-05 20:56:59 +0100 | [diff] [blame] | 29 | #include "tree_edit.h" |
Radek Krejci | ad97c5f | 2020-06-30 09:19:28 +0200 | [diff] [blame] | 30 | #include "tree_schema.h" |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 31 | #include "tree_schema_internal.h" |
| 32 | #include "xpath.h" |
| 33 | |
Radek Krejci | c0c6641 | 2020-08-21 13:53:50 +0200 | [diff] [blame] | 34 | #define LOGVAL_P(CTX, CUR_NODE, CODE, ...) ly_vlog(CTX, (CUR_NODE) ? LY_VLOG_LYSC : LY_VLOG_NONE, CUR_NODE, CODE, ##__VA_ARGS__) |
Michal Vasko | 6b26e74 | 2020-07-17 15:02:10 +0200 | [diff] [blame] | 35 | |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 36 | /** |
| 37 | * @brief Check predicate syntax. |
| 38 | * |
| 39 | * @param[in] ctx libyang context. |
Michal Vasko | 6b26e74 | 2020-07-17 15:02:10 +0200 | [diff] [blame] | 40 | * @param[in] cur_node Current (original context) node. |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 41 | * @param[in] exp Parsed predicate. |
| 42 | * @param[in,out] tok_idx Index in @p exp, is adjusted. |
| 43 | * @param[in] prefix Prefix option. |
| 44 | * @param[in] pred Predicate option. |
| 45 | * @return LY_ERR value. |
| 46 | */ |
| 47 | static LY_ERR |
Michal Vasko | 6b26e74 | 2020-07-17 15:02:10 +0200 | [diff] [blame] | 48 | ly_path_check_predicate(const struct ly_ctx *ctx, const struct lysc_node *cur_node, const struct lyxp_expr *exp, |
Michal Vasko | dd528af | 2022-08-08 14:35:07 +0200 | [diff] [blame] | 49 | uint32_t *tok_idx, uint8_t prefix, uint8_t pred) |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 50 | { |
Radek Krejci | ba03a5a | 2020-08-27 14:40:41 +0200 | [diff] [blame] | 51 | LY_ERR ret = LY_SUCCESS; |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 52 | struct ly_set *set = NULL; |
| 53 | uint32_t i; |
| 54 | const char *name; |
| 55 | size_t name_len; |
| 56 | |
Radek Krejci | ddace2c | 2021-01-08 11:30:56 +0100 | [diff] [blame] | 57 | LOG_LOCSET(cur_node, NULL, NULL, NULL); |
Radek Krejci | 2efc45b | 2020-12-22 16:25:44 +0100 | [diff] [blame] | 58 | |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 59 | if (!lyxp_next_token(NULL, exp, tok_idx, LYXP_TOKEN_BRACK1)) { |
Radek Krejci | f6a1100 | 2020-08-21 13:29:07 +0200 | [diff] [blame] | 60 | /* '[' */ |
| 61 | |
Michal Vasko | 6973015 | 2020-10-09 16:30:07 +0200 | [diff] [blame] | 62 | if (((pred == LY_PATH_PRED_SIMPLE) || (pred == LY_PATH_PRED_KEYS)) && |
| 63 | !lyxp_check_token(NULL, exp, *tok_idx, LYXP_TOKEN_NAMETEST)) { |
Radek Krejci | ba03a5a | 2020-08-27 14:40:41 +0200 | [diff] [blame] | 64 | ret = ly_set_new(&set); |
| 65 | LY_CHECK_GOTO(ret, cleanup); |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 66 | |
| 67 | do { |
| 68 | /* NameTest is always expected here */ |
Radek Krejci | ba03a5a | 2020-08-27 14:40:41 +0200 | [diff] [blame] | 69 | LY_CHECK_GOTO(lyxp_check_token(ctx, exp, *tok_idx, LYXP_TOKEN_NAMETEST), token_error); |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 70 | |
| 71 | /* check prefix based on the options */ |
| 72 | name = strnstr(exp->expr + exp->tok_pos[*tok_idx], ":", exp->tok_len[*tok_idx]); |
| 73 | if ((prefix == LY_PATH_PREFIX_MANDATORY) && !name) { |
Radek Krejci | 2efc45b | 2020-12-22 16:25:44 +0100 | [diff] [blame] | 74 | LOGVAL(ctx, LYVE_XPATH, "Prefix missing for \"%.*s\" in path.", exp->tok_len[*tok_idx], |
Michal Vasko | 6973015 | 2020-10-09 16:30:07 +0200 | [diff] [blame] | 75 | exp->expr + exp->tok_pos[*tok_idx]); |
Radek Krejci | ba03a5a | 2020-08-27 14:40:41 +0200 | [diff] [blame] | 76 | goto token_error; |
Michal Vasko | 8b06a5e | 2020-08-06 12:13:08 +0200 | [diff] [blame] | 77 | } else if ((prefix == LY_PATH_PREFIX_STRICT_INHERIT) && name) { |
Radek Krejci | 2efc45b | 2020-12-22 16:25:44 +0100 | [diff] [blame] | 78 | LOGVAL(ctx, LYVE_XPATH, "Redundant prefix for \"%.*s\" in path.", exp->tok_len[*tok_idx], |
Michal Vasko | 6973015 | 2020-10-09 16:30:07 +0200 | [diff] [blame] | 79 | exp->expr + exp->tok_pos[*tok_idx]); |
Radek Krejci | ba03a5a | 2020-08-27 14:40:41 +0200 | [diff] [blame] | 80 | goto token_error; |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 81 | } |
| 82 | if (!name) { |
| 83 | name = exp->expr + exp->tok_pos[*tok_idx]; |
| 84 | name_len = exp->tok_len[*tok_idx]; |
| 85 | } else { |
| 86 | ++name; |
| 87 | name_len = exp->tok_len[*tok_idx] - (name - (exp->expr + exp->tok_pos[*tok_idx])); |
| 88 | } |
| 89 | |
| 90 | /* check whether it was not already specified */ |
| 91 | for (i = 0; i < set->count; ++i) { |
| 92 | /* all the keys must be from the same module so this comparison should be fine */ |
| 93 | if (!strncmp(set->objs[i], name, name_len) && !isalpha(((char *)set->objs[i])[name_len])) { |
Radek Krejci | 422afb1 | 2021-03-04 16:38:16 +0100 | [diff] [blame] | 94 | LOGVAL(ctx, LYVE_XPATH, "Duplicate predicate key \"%.*s\" in path.", (int)name_len, name); |
Radek Krejci | ba03a5a | 2020-08-27 14:40:41 +0200 | [diff] [blame] | 95 | goto token_error; |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 96 | } |
| 97 | } |
| 98 | |
| 99 | /* add it into the set */ |
Radek Krejci | 3d92e44 | 2020-10-12 12:48:13 +0200 | [diff] [blame] | 100 | ret = ly_set_add(set, (void *)name, 1, NULL); |
Radek Krejci | ba03a5a | 2020-08-27 14:40:41 +0200 | [diff] [blame] | 101 | LY_CHECK_GOTO(ret, cleanup); |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 102 | |
| 103 | /* NameTest */ |
| 104 | ++(*tok_idx); |
| 105 | |
| 106 | /* '=' */ |
Radek Krejci | ba03a5a | 2020-08-27 14:40:41 +0200 | [diff] [blame] | 107 | LY_CHECK_GOTO(lyxp_next_token(ctx, exp, tok_idx, LYXP_TOKEN_OPER_EQUAL), token_error); |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 108 | |
Michal Vasko | 4911eeb | 2021-06-28 11:23:05 +0200 | [diff] [blame] | 109 | /* Literal or Number */ |
| 110 | LY_CHECK_GOTO(lyxp_next_token2(ctx, exp, tok_idx, LYXP_TOKEN_LITERAL, LYXP_TOKEN_NUMBER), token_error); |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 111 | |
| 112 | /* ']' */ |
Radek Krejci | ba03a5a | 2020-08-27 14:40:41 +0200 | [diff] [blame] | 113 | LY_CHECK_GOTO(lyxp_next_token(ctx, exp, tok_idx, LYXP_TOKEN_BRACK2), token_error); |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 114 | |
Radek Krejci | 0f96988 | 2020-08-21 16:56:47 +0200 | [diff] [blame] | 115 | /* '[' */ |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 116 | } while (!lyxp_next_token(NULL, exp, tok_idx, LYXP_TOKEN_BRACK1)); |
| 117 | |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 118 | } else if ((pred == LY_PATH_PRED_SIMPLE) && !lyxp_next_token(NULL, exp, tok_idx, LYXP_TOKEN_DOT)) { |
Radek Krejci | f6a1100 | 2020-08-21 13:29:07 +0200 | [diff] [blame] | 119 | /* '.' */ |
| 120 | |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 121 | /* '=' */ |
Radek Krejci | ba03a5a | 2020-08-27 14:40:41 +0200 | [diff] [blame] | 122 | LY_CHECK_GOTO(lyxp_next_token(ctx, exp, tok_idx, LYXP_TOKEN_OPER_EQUAL), token_error); |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 123 | |
Michal Vasko | 4911eeb | 2021-06-28 11:23:05 +0200 | [diff] [blame] | 124 | /* Literal or Number */ |
| 125 | LY_CHECK_GOTO(lyxp_next_token2(ctx, exp, tok_idx, LYXP_TOKEN_LITERAL, LYXP_TOKEN_NUMBER), token_error); |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 126 | |
| 127 | /* ']' */ |
Radek Krejci | ba03a5a | 2020-08-27 14:40:41 +0200 | [diff] [blame] | 128 | LY_CHECK_GOTO(lyxp_next_token(ctx, exp, tok_idx, LYXP_TOKEN_BRACK2), token_error); |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 129 | |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 130 | } else if ((pred == LY_PATH_PRED_SIMPLE) && !lyxp_next_token(NULL, exp, tok_idx, LYXP_TOKEN_NUMBER)) { |
Radek Krejci | f6a1100 | 2020-08-21 13:29:07 +0200 | [diff] [blame] | 131 | /* Number */ |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 132 | |
| 133 | /* ']' */ |
Radek Krejci | ba03a5a | 2020-08-27 14:40:41 +0200 | [diff] [blame] | 134 | LY_CHECK_GOTO(lyxp_next_token(ctx, exp, tok_idx, LYXP_TOKEN_BRACK2), token_error); |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 135 | |
| 136 | } else if ((pred == LY_PATH_PRED_LEAFREF) && !lyxp_check_token(NULL, exp, *tok_idx, LYXP_TOKEN_NAMETEST)) { |
| 137 | assert(prefix == LY_PATH_PREFIX_OPTIONAL); |
Radek Krejci | ba03a5a | 2020-08-27 14:40:41 +0200 | [diff] [blame] | 138 | ret = ly_set_new(&set); |
| 139 | LY_CHECK_GOTO(ret, cleanup); |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 140 | |
| 141 | do { |
| 142 | /* NameTest is always expected here */ |
Radek Krejci | ba03a5a | 2020-08-27 14:40:41 +0200 | [diff] [blame] | 143 | LY_CHECK_GOTO(lyxp_check_token(ctx, exp, *tok_idx, LYXP_TOKEN_NAMETEST), token_error); |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 144 | |
| 145 | name = strnstr(exp->expr + exp->tok_pos[*tok_idx], ":", exp->tok_len[*tok_idx]); |
| 146 | if (!name) { |
| 147 | name = exp->expr + exp->tok_pos[*tok_idx]; |
| 148 | name_len = exp->tok_len[*tok_idx]; |
| 149 | } else { |
| 150 | ++name; |
| 151 | name_len = exp->tok_len[*tok_idx] - (name - (exp->expr + exp->tok_pos[*tok_idx])); |
| 152 | } |
| 153 | |
| 154 | /* check whether it was not already specified */ |
| 155 | for (i = 0; i < set->count; ++i) { |
| 156 | /* all the keys must be from the same module so this comparison should be fine */ |
| 157 | if (!strncmp(set->objs[i], name, name_len) && !isalpha(((char *)set->objs[i])[name_len])) { |
Radek Krejci | 422afb1 | 2021-03-04 16:38:16 +0100 | [diff] [blame] | 158 | LOGVAL(ctx, LYVE_XPATH, "Duplicate predicate key \"%.*s\" in path.", (int)name_len, name); |
Radek Krejci | ba03a5a | 2020-08-27 14:40:41 +0200 | [diff] [blame] | 159 | goto token_error; |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 160 | } |
| 161 | } |
| 162 | |
| 163 | /* add it into the set */ |
Radek Krejci | 3d92e44 | 2020-10-12 12:48:13 +0200 | [diff] [blame] | 164 | ret = ly_set_add(set, (void *)name, 1, NULL); |
Radek Krejci | ba03a5a | 2020-08-27 14:40:41 +0200 | [diff] [blame] | 165 | LY_CHECK_GOTO(ret, cleanup); |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 166 | |
| 167 | /* NameTest */ |
| 168 | ++(*tok_idx); |
| 169 | |
| 170 | /* '=' */ |
Radek Krejci | ba03a5a | 2020-08-27 14:40:41 +0200 | [diff] [blame] | 171 | LY_CHECK_GOTO(lyxp_next_token(ctx, exp, tok_idx, LYXP_TOKEN_OPER_EQUAL), token_error); |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 172 | |
| 173 | /* FuncName */ |
Radek Krejci | ba03a5a | 2020-08-27 14:40:41 +0200 | [diff] [blame] | 174 | LY_CHECK_GOTO(lyxp_check_token(ctx, exp, *tok_idx, LYXP_TOKEN_FUNCNAME), token_error); |
Radek Krejci | f13b87b | 2020-12-01 22:02:17 +0100 | [diff] [blame] | 175 | if ((exp->tok_len[*tok_idx] != ly_strlen_const("current")) || |
| 176 | strncmp(exp->expr + exp->tok_pos[*tok_idx], "current", ly_strlen_const("current"))) { |
Radek Krejci | 2efc45b | 2020-12-22 16:25:44 +0100 | [diff] [blame] | 177 | LOGVAL(ctx, LYVE_XPATH, "Invalid function \"%.*s\" invocation in path.", |
Michal Vasko | 6973015 | 2020-10-09 16:30:07 +0200 | [diff] [blame] | 178 | exp->tok_len[*tok_idx], exp->expr + exp->tok_pos[*tok_idx]); |
Radek Krejci | ba03a5a | 2020-08-27 14:40:41 +0200 | [diff] [blame] | 179 | goto token_error; |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 180 | } |
| 181 | ++(*tok_idx); |
| 182 | |
| 183 | /* '(' */ |
Radek Krejci | ba03a5a | 2020-08-27 14:40:41 +0200 | [diff] [blame] | 184 | LY_CHECK_GOTO(lyxp_next_token(ctx, exp, tok_idx, LYXP_TOKEN_PAR1), token_error); |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 185 | |
| 186 | /* ')' */ |
Radek Krejci | ba03a5a | 2020-08-27 14:40:41 +0200 | [diff] [blame] | 187 | LY_CHECK_GOTO(lyxp_next_token(ctx, exp, tok_idx, LYXP_TOKEN_PAR2), token_error); |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 188 | |
| 189 | /* '/' */ |
Radek Krejci | ba03a5a | 2020-08-27 14:40:41 +0200 | [diff] [blame] | 190 | LY_CHECK_GOTO(lyxp_next_token(ctx, exp, tok_idx, LYXP_TOKEN_OPER_PATH), token_error); |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 191 | |
| 192 | /* '..' */ |
Radek Krejci | ba03a5a | 2020-08-27 14:40:41 +0200 | [diff] [blame] | 193 | LY_CHECK_GOTO(lyxp_next_token(ctx, exp, tok_idx, LYXP_TOKEN_DDOT), token_error); |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 194 | do { |
| 195 | /* '/' */ |
Radek Krejci | ba03a5a | 2020-08-27 14:40:41 +0200 | [diff] [blame] | 196 | LY_CHECK_GOTO(lyxp_next_token(ctx, exp, tok_idx, LYXP_TOKEN_OPER_PATH), token_error); |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 197 | } while (!lyxp_next_token(NULL, exp, tok_idx, LYXP_TOKEN_DDOT)); |
| 198 | |
| 199 | /* NameTest */ |
Radek Krejci | ba03a5a | 2020-08-27 14:40:41 +0200 | [diff] [blame] | 200 | LY_CHECK_GOTO(lyxp_next_token(ctx, exp, tok_idx, LYXP_TOKEN_NAMETEST), token_error); |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 201 | |
| 202 | /* '/' */ |
| 203 | while (!lyxp_next_token(NULL, exp, tok_idx, LYXP_TOKEN_OPER_PATH)) { |
| 204 | /* NameTest */ |
Radek Krejci | ba03a5a | 2020-08-27 14:40:41 +0200 | [diff] [blame] | 205 | LY_CHECK_GOTO(lyxp_next_token(ctx, exp, tok_idx, LYXP_TOKEN_NAMETEST), token_error); |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 206 | } |
| 207 | |
| 208 | /* ']' */ |
Radek Krejci | ba03a5a | 2020-08-27 14:40:41 +0200 | [diff] [blame] | 209 | LY_CHECK_GOTO(lyxp_next_token(ctx, exp, tok_idx, LYXP_TOKEN_BRACK2), token_error); |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 210 | |
Radek Krejci | 0f96988 | 2020-08-21 16:56:47 +0200 | [diff] [blame] | 211 | /* '[' */ |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 212 | } while (!lyxp_next_token(NULL, exp, tok_idx, LYXP_TOKEN_BRACK1)); |
| 213 | |
Michal Vasko | 3c19b49 | 2022-09-05 08:48:10 +0200 | [diff] [blame] | 214 | } else if (lyxp_check_token(ctx, exp, *tok_idx, 0)) { |
| 215 | /* unexpected EOF */ |
| 216 | goto token_error; |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 217 | } else { |
Michal Vasko | 3c19b49 | 2022-09-05 08:48:10 +0200 | [diff] [blame] | 218 | /* invalid token */ |
Michal Vasko | 49fec8e | 2022-05-24 10:28:33 +0200 | [diff] [blame] | 219 | LOGVAL(ctx, LY_VCODE_XP_INTOK, lyxp_token2str(exp->tokens[*tok_idx]), exp->expr + exp->tok_pos[*tok_idx]); |
Radek Krejci | ba03a5a | 2020-08-27 14:40:41 +0200 | [diff] [blame] | 220 | goto token_error; |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 221 | } |
| 222 | } |
| 223 | |
Radek Krejci | ba03a5a | 2020-08-27 14:40:41 +0200 | [diff] [blame] | 224 | cleanup: |
Radek Krejci | ddace2c | 2021-01-08 11:30:56 +0100 | [diff] [blame] | 225 | LOG_LOCBACK(cur_node ? 1 : 0, 0, 0, 0); |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 226 | ly_set_free(set, NULL); |
Radek Krejci | ba03a5a | 2020-08-27 14:40:41 +0200 | [diff] [blame] | 227 | return ret; |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 228 | |
Radek Krejci | ba03a5a | 2020-08-27 14:40:41 +0200 | [diff] [blame] | 229 | token_error: |
Radek Krejci | ddace2c | 2021-01-08 11:30:56 +0100 | [diff] [blame] | 230 | LOG_LOCBACK(cur_node ? 1 : 0, 0, 0, 0); |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 231 | ly_set_free(set, NULL); |
| 232 | return LY_EVALID; |
| 233 | } |
| 234 | |
| 235 | LY_ERR |
Michal Vasko | 6b26e74 | 2020-07-17 15:02:10 +0200 | [diff] [blame] | 236 | ly_path_parse(const struct ly_ctx *ctx, const struct lysc_node *ctx_node, const char *str_path, size_t path_len, |
Michal Vasko | ed725d7 | 2021-06-23 12:03:45 +0200 | [diff] [blame] | 237 | ly_bool lref, uint8_t begin, uint8_t prefix, uint8_t pred, struct lyxp_expr **expr) |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 238 | { |
Radek Krejci | f03a9e2 | 2020-09-18 20:09:31 +0200 | [diff] [blame] | 239 | LY_ERR ret = LY_SUCCESS; |
| 240 | struct lyxp_expr *exp = NULL; |
Michal Vasko | dd528af | 2022-08-08 14:35:07 +0200 | [diff] [blame] | 241 | uint32_t tok_idx, cur_len; |
Michal Vasko | 8b06a5e | 2020-08-06 12:13:08 +0200 | [diff] [blame] | 242 | const char *cur_node, *prev_prefix = NULL, *ptr; |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 243 | |
| 244 | assert((begin == LY_PATH_BEGIN_ABSOLUTE) || (begin == LY_PATH_BEGIN_EITHER)); |
Michal Vasko | 6973015 | 2020-10-09 16:30:07 +0200 | [diff] [blame] | 245 | assert((prefix == LY_PATH_PREFIX_OPTIONAL) || (prefix == LY_PATH_PREFIX_MANDATORY) || |
| 246 | (prefix == LY_PATH_PREFIX_STRICT_INHERIT)); |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 247 | assert((pred == LY_PATH_PRED_KEYS) || (pred == LY_PATH_PRED_SIMPLE) || (pred == LY_PATH_PRED_LEAFREF)); |
| 248 | |
Radek Krejci | ddace2c | 2021-01-08 11:30:56 +0100 | [diff] [blame] | 249 | LOG_LOCSET(ctx_node, NULL, NULL, NULL); |
Radek Krejci | 2efc45b | 2020-12-22 16:25:44 +0100 | [diff] [blame] | 250 | |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 251 | /* parse as a generic XPath expression */ |
Radek Krejci | f03a9e2 | 2020-09-18 20:09:31 +0200 | [diff] [blame] | 252 | LY_CHECK_GOTO(ret = lyxp_expr_parse(ctx, str_path, path_len, 1, &exp), error); |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 253 | tok_idx = 0; |
| 254 | |
| 255 | if (begin == LY_PATH_BEGIN_EITHER) { |
| 256 | /* is the path relative? */ |
| 257 | if (lyxp_next_token(NULL, exp, &tok_idx, LYXP_TOKEN_OPER_PATH)) { |
Michal Vasko | cb8c6d4 | 2020-10-16 11:58:30 +0200 | [diff] [blame] | 258 | /* relative path check specific to leafref */ |
Michal Vasko | ed725d7 | 2021-06-23 12:03:45 +0200 | [diff] [blame] | 259 | if (lref) { |
Michal Vasko | cb8c6d4 | 2020-10-16 11:58:30 +0200 | [diff] [blame] | 260 | /* mandatory '..' */ |
| 261 | LY_CHECK_ERR_GOTO(lyxp_next_token(ctx, exp, &tok_idx, LYXP_TOKEN_DDOT), ret = LY_EVALID, error); |
| 262 | |
| 263 | do { |
| 264 | /* '/' */ |
| 265 | LY_CHECK_ERR_GOTO(lyxp_next_token(ctx, exp, &tok_idx, LYXP_TOKEN_OPER_PATH), ret = LY_EVALID, error); |
| 266 | |
| 267 | /* optional '..' */ |
| 268 | } while (!lyxp_next_token(NULL, exp, &tok_idx, LYXP_TOKEN_DDOT)); |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 269 | } |
| 270 | } |
| 271 | } else { |
| 272 | /* '/' */ |
Radek Krejci | f03a9e2 | 2020-09-18 20:09:31 +0200 | [diff] [blame] | 273 | LY_CHECK_ERR_GOTO(lyxp_next_token(ctx, exp, &tok_idx, LYXP_TOKEN_OPER_PATH), ret = LY_EVALID, error); |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 274 | } |
| 275 | |
| 276 | do { |
| 277 | /* NameTest */ |
Radek Krejci | f03a9e2 | 2020-09-18 20:09:31 +0200 | [diff] [blame] | 278 | LY_CHECK_ERR_GOTO(lyxp_check_token(ctx, exp, tok_idx, LYXP_TOKEN_NAMETEST), ret = LY_EVALID, error); |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 279 | |
| 280 | /* check prefix based on the options */ |
Michal Vasko | 8b06a5e | 2020-08-06 12:13:08 +0200 | [diff] [blame] | 281 | cur_node = exp->expr + exp->tok_pos[tok_idx]; |
| 282 | cur_len = exp->tok_len[tok_idx]; |
| 283 | if (prefix == LY_PATH_PREFIX_MANDATORY) { |
| 284 | if (!strnstr(cur_node, ":", cur_len)) { |
Radek Krejci | 2efc45b | 2020-12-22 16:25:44 +0100 | [diff] [blame] | 285 | LOGVAL(ctx, LYVE_XPATH, "Prefix missing for \"%.*s\" in path.", cur_len, cur_node); |
Radek Krejci | f03a9e2 | 2020-09-18 20:09:31 +0200 | [diff] [blame] | 286 | ret = LY_EVALID; |
Michal Vasko | 8b06a5e | 2020-08-06 12:13:08 +0200 | [diff] [blame] | 287 | goto error; |
| 288 | } |
| 289 | } else if (prefix == LY_PATH_PREFIX_STRICT_INHERIT) { |
| 290 | if (!prev_prefix) { |
| 291 | /* the first node must have a prefix */ |
| 292 | if (!strnstr(cur_node, ":", cur_len)) { |
Radek Krejci | 2efc45b | 2020-12-22 16:25:44 +0100 | [diff] [blame] | 293 | LOGVAL(ctx, LYVE_XPATH, "Prefix missing for \"%.*s\" in path.", cur_len, cur_node); |
Radek Krejci | f03a9e2 | 2020-09-18 20:09:31 +0200 | [diff] [blame] | 294 | ret = LY_EVALID; |
Michal Vasko | 8b06a5e | 2020-08-06 12:13:08 +0200 | [diff] [blame] | 295 | goto error; |
| 296 | } |
| 297 | |
| 298 | /* remember the first prefix */ |
| 299 | prev_prefix = cur_node; |
| 300 | } else { |
| 301 | /* the prefix must be different, if any */ |
| 302 | ptr = strnstr(cur_node, ":", cur_len); |
| 303 | if (ptr) { |
| 304 | if (!strncmp(prev_prefix, cur_node, ptr - cur_node) && (prev_prefix[ptr - cur_node] == ':')) { |
Radek Krejci | 2efc45b | 2020-12-22 16:25:44 +0100 | [diff] [blame] | 305 | LOGVAL(ctx, LYVE_XPATH, "Duplicate prefix for \"%.*s\" in path.", cur_len, cur_node); |
Radek Krejci | f03a9e2 | 2020-09-18 20:09:31 +0200 | [diff] [blame] | 306 | ret = LY_EVALID; |
Michal Vasko | 8b06a5e | 2020-08-06 12:13:08 +0200 | [diff] [blame] | 307 | goto error; |
| 308 | } |
| 309 | |
| 310 | /* remember this next prefix */ |
| 311 | prev_prefix = cur_node; |
| 312 | } |
| 313 | } |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 314 | } |
| 315 | |
| 316 | ++tok_idx; |
| 317 | |
| 318 | /* Predicate* */ |
Radek Krejci | f03a9e2 | 2020-09-18 20:09:31 +0200 | [diff] [blame] | 319 | LY_CHECK_GOTO(ret = ly_path_check_predicate(ctx, ctx_node, exp, &tok_idx, prefix, pred), error); |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 320 | |
Radek Krejci | 0f96988 | 2020-08-21 16:56:47 +0200 | [diff] [blame] | 321 | /* '/' */ |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 322 | } while (!lyxp_next_token(NULL, exp, &tok_idx, LYXP_TOKEN_OPER_PATH)); |
| 323 | |
| 324 | /* trailing token check */ |
| 325 | if (exp->used > tok_idx) { |
Radek Krejci | 2efc45b | 2020-12-22 16:25:44 +0100 | [diff] [blame] | 326 | LOGVAL(ctx, LYVE_XPATH, "Unparsed characters \"%s\" left at the end of path.", exp->expr + exp->tok_pos[tok_idx]); |
Radek Krejci | f03a9e2 | 2020-09-18 20:09:31 +0200 | [diff] [blame] | 327 | ret = LY_EVALID; |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 328 | goto error; |
| 329 | } |
| 330 | |
| 331 | *expr = exp; |
Radek Krejci | 2efc45b | 2020-12-22 16:25:44 +0100 | [diff] [blame] | 332 | |
Radek Krejci | ddace2c | 2021-01-08 11:30:56 +0100 | [diff] [blame] | 333 | LOG_LOCBACK(ctx_node ? 1 : 0, 0, 0, 0); |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 334 | return LY_SUCCESS; |
| 335 | |
| 336 | error: |
| 337 | lyxp_expr_free(ctx, exp); |
Radek Krejci | ddace2c | 2021-01-08 11:30:56 +0100 | [diff] [blame] | 338 | LOG_LOCBACK(ctx_node ? 1 : 0, 0, 0, 0); |
Radek Krejci | f03a9e2 | 2020-09-18 20:09:31 +0200 | [diff] [blame] | 339 | return ret; |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 340 | } |
| 341 | |
| 342 | LY_ERR |
Michal Vasko | 6b26e74 | 2020-07-17 15:02:10 +0200 | [diff] [blame] | 343 | ly_path_parse_predicate(const struct ly_ctx *ctx, const struct lysc_node *cur_node, const char *str_path, |
Radek Krejci | 0f96988 | 2020-08-21 16:56:47 +0200 | [diff] [blame] | 344 | size_t path_len, uint8_t prefix, uint8_t pred, struct lyxp_expr **expr) |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 345 | { |
Radek Krejci | f03a9e2 | 2020-09-18 20:09:31 +0200 | [diff] [blame] | 346 | LY_ERR ret = LY_SUCCESS; |
| 347 | struct lyxp_expr *exp = NULL; |
Michal Vasko | dd528af | 2022-08-08 14:35:07 +0200 | [diff] [blame] | 348 | uint32_t tok_idx; |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 349 | |
| 350 | assert((prefix == LY_PATH_PREFIX_OPTIONAL) || (prefix == LY_PATH_PREFIX_MANDATORY)); |
| 351 | assert((pred == LY_PATH_PRED_KEYS) || (pred == LY_PATH_PRED_SIMPLE) || (pred == LY_PATH_PRED_LEAFREF)); |
| 352 | |
Radek Krejci | ddace2c | 2021-01-08 11:30:56 +0100 | [diff] [blame] | 353 | LOG_LOCSET(cur_node, NULL, NULL, NULL); |
Radek Krejci | 2efc45b | 2020-12-22 16:25:44 +0100 | [diff] [blame] | 354 | |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 355 | /* parse as a generic XPath expression */ |
Radek Krejci | f03a9e2 | 2020-09-18 20:09:31 +0200 | [diff] [blame] | 356 | LY_CHECK_GOTO(ret = lyxp_expr_parse(ctx, str_path, path_len, 0, &exp), error); |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 357 | tok_idx = 0; |
| 358 | |
Radek Krejci | f03a9e2 | 2020-09-18 20:09:31 +0200 | [diff] [blame] | 359 | LY_CHECK_GOTO(ret = ly_path_check_predicate(ctx, cur_node, exp, &tok_idx, prefix, pred), error); |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 360 | |
| 361 | /* trailing token check */ |
| 362 | if (exp->used > tok_idx) { |
Radek Krejci | 2efc45b | 2020-12-22 16:25:44 +0100 | [diff] [blame] | 363 | LOGVAL(ctx, LYVE_XPATH, "Unparsed characters \"%s\" left at the end of predicate.", |
Michal Vasko | 6973015 | 2020-10-09 16:30:07 +0200 | [diff] [blame] | 364 | exp->expr + exp->tok_pos[tok_idx]); |
Radek Krejci | f03a9e2 | 2020-09-18 20:09:31 +0200 | [diff] [blame] | 365 | ret = LY_EVALID; |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 366 | goto error; |
| 367 | } |
| 368 | |
| 369 | *expr = exp; |
Radek Krejci | 2efc45b | 2020-12-22 16:25:44 +0100 | [diff] [blame] | 370 | |
Radek Krejci | ddace2c | 2021-01-08 11:30:56 +0100 | [diff] [blame] | 371 | LOG_LOCBACK(cur_node ? 1 : 0, 0, 0, 0); |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 372 | return LY_SUCCESS; |
| 373 | |
| 374 | error: |
| 375 | lyxp_expr_free(ctx, exp); |
Radek Krejci | ddace2c | 2021-01-08 11:30:56 +0100 | [diff] [blame] | 376 | LOG_LOCBACK(cur_node ? 1 : 0, 0, 0, 0); |
Radek Krejci | f03a9e2 | 2020-09-18 20:09:31 +0200 | [diff] [blame] | 377 | return ret; |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 378 | } |
| 379 | |
| 380 | /** |
Michal Vasko | 8cc3f66 | 2022-03-29 11:25:51 +0200 | [diff] [blame] | 381 | * @brief Parse NameTest and get the corresponding schema node. |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 382 | * |
Michal Vasko | 00cbf53 | 2020-06-15 13:58:47 +0200 | [diff] [blame] | 383 | * @param[in] ctx libyang context. |
Michal Vasko | 6b26e74 | 2020-07-17 15:02:10 +0200 | [diff] [blame] | 384 | * @param[in] cur_node Optional current (original context) node. |
Radek Krejci | 84d7fd7 | 2021-07-14 18:32:21 +0200 | [diff] [blame] | 385 | * @param[in] cur_mod Current module of the path (where the path is "instantiated"). Needed for ::LY_VALUE_SCHEMA |
| 386 | * and ::LY_VALUE_SCHEMA_RESOLVED. |
Michal Vasko | 8cc3f66 | 2022-03-29 11:25:51 +0200 | [diff] [blame] | 387 | * @param[in] prev_ctx_node Previous context node. |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 388 | * @param[in] expr Parsed path. |
| 389 | * @param[in] tok_idx Index in @p expr. |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 390 | * @param[in] format Format of the path. |
Michal Vasko | c8a230d | 2020-08-14 12:17:10 +0200 | [diff] [blame] | 391 | * @param[in] prefix_data Format-specific data for resolving any prefixes (see ::ly_resolve_prefix). |
Michal Vasko | 8cc3f66 | 2022-03-29 11:25:51 +0200 | [diff] [blame] | 392 | * @param[in] top_ext Optional top-level extension to use for searching the schema node. |
| 393 | * @param[in] getnext_opts Options to be used for ::lys_getnext() calls. |
| 394 | * @param[out] snode Resolved schema node. |
| 395 | * @param[out] ext Optional extension instance of @p snode, if any. |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 396 | * @return LY_ERR value. |
| 397 | */ |
| 398 | static LY_ERR |
Michal Vasko | 8cc3f66 | 2022-03-29 11:25:51 +0200 | [diff] [blame] | 399 | ly_path_compile_snode(const struct ly_ctx *ctx, const struct lysc_node *cur_node, const struct lys_module *cur_mod, |
Michal Vasko | dd528af | 2022-08-08 14:35:07 +0200 | [diff] [blame] | 400 | const struct lysc_node *prev_ctx_node, const struct lyxp_expr *expr, uint32_t tok_idx, LY_VALUE_FORMAT format, |
Michal Vasko | 8cc3f66 | 2022-03-29 11:25:51 +0200 | [diff] [blame] | 401 | void *prefix_data, const struct lysc_ext_instance *top_ext, uint32_t getnext_opts, const struct lysc_node **snode, |
| 402 | struct lysc_ext_instance **ext) |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 403 | { |
Radek Krejci | 2efc45b | 2020-12-22 16:25:44 +0100 | [diff] [blame] | 404 | LY_ERR ret; |
Michal Vasko | 8cc3f66 | 2022-03-29 11:25:51 +0200 | [diff] [blame] | 405 | const struct lys_module *mod = NULL; |
| 406 | struct lysc_ext_instance *e = NULL; |
| 407 | const char *pref, *name; |
| 408 | size_t len, name_len; |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 409 | |
| 410 | assert(expr->tokens[tok_idx] == LYXP_TOKEN_NAMETEST); |
| 411 | |
Michal Vasko | 8cc3f66 | 2022-03-29 11:25:51 +0200 | [diff] [blame] | 412 | *snode = NULL; |
| 413 | if (ext) { |
| 414 | *ext = NULL; |
| 415 | } |
| 416 | |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 417 | /* get prefix */ |
Michal Vasko | 5d24f6c | 2020-10-13 13:49:06 +0200 | [diff] [blame] | 418 | if ((pref = strnstr(expr->expr + expr->tok_pos[tok_idx], ":", expr->tok_len[tok_idx]))) { |
| 419 | len = pref - (expr->expr + expr->tok_pos[tok_idx]); |
| 420 | pref = expr->expr + expr->tok_pos[tok_idx]; |
| 421 | } else { |
| 422 | len = 0; |
| 423 | } |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 424 | |
Michal Vasko | 8cc3f66 | 2022-03-29 11:25:51 +0200 | [diff] [blame] | 425 | /* set name */ |
| 426 | if (pref) { |
| 427 | name = pref + len + 1; |
| 428 | name_len = expr->tok_len[tok_idx] - len - 1; |
| 429 | } else { |
| 430 | name = expr->expr + expr->tok_pos[tok_idx]; |
| 431 | name_len = expr->tok_len[tok_idx]; |
| 432 | } |
| 433 | |
| 434 | /* find node module */ |
Michal Vasko | 5d24f6c | 2020-10-13 13:49:06 +0200 | [diff] [blame] | 435 | if (pref) { |
Radek Krejci | ddace2c | 2021-01-08 11:30:56 +0100 | [diff] [blame] | 436 | LOG_LOCSET(cur_node, NULL, NULL, NULL); |
Radek Krejci | 2efc45b | 2020-12-22 16:25:44 +0100 | [diff] [blame] | 437 | |
Michal Vasko | 35b2962 | 2022-07-22 14:12:56 +0200 | [diff] [blame] | 438 | mod = ly_resolve_prefix(prev_ctx_node ? prev_ctx_node->module->ctx : ctx, pref, len, format, prefix_data); |
Michal Vasko | 8cc3f66 | 2022-03-29 11:25:51 +0200 | [diff] [blame] | 439 | if ((!mod || !mod->implemented) && prev_ctx_node) { |
| 440 | /* check for nested ext data */ |
| 441 | ret = ly_nested_ext_schema(NULL, prev_ctx_node, pref, len, format, prefix_data, name, name_len, snode, &e); |
| 442 | if (!ret) { |
| 443 | goto success; |
| 444 | } else if (ret != LY_ENOT) { |
| 445 | goto error; |
| 446 | } |
| 447 | } |
| 448 | |
| 449 | if (!mod) { |
Radek Krejci | 2efc45b | 2020-12-22 16:25:44 +0100 | [diff] [blame] | 450 | LOGVAL(ctx, LYVE_XPATH, "No module connected with the prefix \"%.*s\" found (prefix format %s).", |
Radek Krejci | 422afb1 | 2021-03-04 16:38:16 +0100 | [diff] [blame] | 451 | (int)len, pref, ly_format2str(format)); |
Michal Vasko | 825a044 | 2021-04-16 16:11:53 +0200 | [diff] [blame] | 452 | ret = LY_EVALID; |
Radek Krejci | 2efc45b | 2020-12-22 16:25:44 +0100 | [diff] [blame] | 453 | goto error; |
Michal Vasko | 8cc3f66 | 2022-03-29 11:25:51 +0200 | [diff] [blame] | 454 | } else if (!mod->implemented) { |
| 455 | LOGVAL(ctx, LYVE_XPATH, "Not implemented module \"%s\" in path.", mod->name); |
Michal Vasko | ed725d7 | 2021-06-23 12:03:45 +0200 | [diff] [blame] | 456 | ret = LY_EVALID; |
| 457 | goto error; |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 458 | } |
Radek Krejci | 2efc45b | 2020-12-22 16:25:44 +0100 | [diff] [blame] | 459 | |
Radek Krejci | ddace2c | 2021-01-08 11:30:56 +0100 | [diff] [blame] | 460 | LOG_LOCBACK(cur_node ? 1 : 0, 0, 0, 0); |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 461 | } else { |
| 462 | switch (format) { |
Radek Krejci | 8df109d | 2021-04-23 12:19:08 +0200 | [diff] [blame] | 463 | case LY_VALUE_SCHEMA: |
| 464 | case LY_VALUE_SCHEMA_RESOLVED: |
Michal Vasko | 5d24f6c | 2020-10-13 13:49:06 +0200 | [diff] [blame] | 465 | if (!cur_mod) { |
| 466 | LOGINT_RET(ctx); |
| 467 | } |
| 468 | /* use current module */ |
Michal Vasko | 8cc3f66 | 2022-03-29 11:25:51 +0200 | [diff] [blame] | 469 | mod = cur_mod; |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 470 | break; |
Radek Krejci | 8df109d | 2021-04-23 12:19:08 +0200 | [diff] [blame] | 471 | case LY_VALUE_JSON: |
Michal Vasko | 79228af | 2021-08-26 14:44:28 +0200 | [diff] [blame] | 472 | case LY_VALUE_LYB: |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 473 | if (!prev_ctx_node) { |
Michal Vasko | 00cbf53 | 2020-06-15 13:58:47 +0200 | [diff] [blame] | 474 | LOGINT_RET(ctx); |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 475 | } |
Michal Vasko | 5d24f6c | 2020-10-13 13:49:06 +0200 | [diff] [blame] | 476 | /* inherit module of the previous node */ |
Michal Vasko | 8cc3f66 | 2022-03-29 11:25:51 +0200 | [diff] [blame] | 477 | mod = prev_ctx_node->module; |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 478 | break; |
Radek Krejci | 224d4b4 | 2021-04-23 13:54:59 +0200 | [diff] [blame] | 479 | case LY_VALUE_CANON: |
Radek Krejci | 8df109d | 2021-04-23 12:19:08 +0200 | [diff] [blame] | 480 | case LY_VALUE_XML: |
Michal Vasko | ddd7659 | 2022-01-17 13:34:48 +0100 | [diff] [blame] | 481 | case LY_VALUE_STR_NS: |
Radek Krejci | f994364 | 2021-04-26 10:18:21 +0200 | [diff] [blame] | 482 | /* not really defined or accepted */ |
Michal Vasko | 00cbf53 | 2020-06-15 13:58:47 +0200 | [diff] [blame] | 483 | LOGINT_RET(ctx); |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 484 | } |
| 485 | } |
| 486 | |
Michal Vasko | 8cc3f66 | 2022-03-29 11:25:51 +0200 | [diff] [blame] | 487 | /* find schema node */ |
| 488 | if (!prev_ctx_node && top_ext) { |
| 489 | *snode = lysc_ext_find_node(top_ext, mod, name, name_len, 0, getnext_opts); |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 490 | } else { |
Michal Vasko | 8cc3f66 | 2022-03-29 11:25:51 +0200 | [diff] [blame] | 491 | *snode = lys_find_child(prev_ctx_node, mod, name, name_len, 0, getnext_opts); |
| 492 | if (!(*snode) && prev_ctx_node) { |
| 493 | ret = ly_nested_ext_schema(NULL, prev_ctx_node, pref, len, format, prefix_data, name, name_len, snode, &e); |
| 494 | LY_CHECK_RET(ret && (ret != LY_ENOT), ret); |
| 495 | } |
| 496 | } |
| 497 | if (!(*snode)) { |
| 498 | LOGVAL(ctx, LYVE_XPATH, "Not found node \"%.*s\" in path.", (int)name_len, name); |
| 499 | return LY_ENOTFOUND; |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 500 | } |
| 501 | |
Michal Vasko | 8cc3f66 | 2022-03-29 11:25:51 +0200 | [diff] [blame] | 502 | success: |
| 503 | if (ext) { |
| 504 | *ext = e; |
| 505 | } |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 506 | return LY_SUCCESS; |
Radek Krejci | 2efc45b | 2020-12-22 16:25:44 +0100 | [diff] [blame] | 507 | |
| 508 | error: |
Radek Krejci | ddace2c | 2021-01-08 11:30:56 +0100 | [diff] [blame] | 509 | LOG_LOCBACK(cur_node ? 1 : 0, 0, 0, 0); |
Michal Vasko | 825a044 | 2021-04-16 16:11:53 +0200 | [diff] [blame] | 510 | return ret; |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 511 | } |
| 512 | |
| 513 | LY_ERR |
Michal Vasko | 6b26e74 | 2020-07-17 15:02:10 +0200 | [diff] [blame] | 514 | ly_path_compile_predicate(const struct ly_ctx *ctx, const struct lysc_node *cur_node, const struct lys_module *cur_mod, |
Michal Vasko | dd528af | 2022-08-08 14:35:07 +0200 | [diff] [blame] | 515 | const struct lysc_node *ctx_node, const struct lyxp_expr *expr, uint32_t *tok_idx, LY_VALUE_FORMAT format, |
Michal Vasko | 5d24f6c | 2020-10-13 13:49:06 +0200 | [diff] [blame] | 516 | void *prefix_data, struct ly_path_predicate **predicates, enum ly_path_pred_type *pred_type) |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 517 | { |
Radek Krejci | 2efc45b | 2020-12-22 16:25:44 +0100 | [diff] [blame] | 518 | LY_ERR ret = LY_SUCCESS; |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 519 | struct ly_path_predicate *p; |
| 520 | const struct lysc_node *key; |
Michal Vasko | 8cc3f66 | 2022-03-29 11:25:51 +0200 | [diff] [blame] | 521 | const char *val; |
| 522 | size_t val_len, key_count; |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 523 | |
Michal Vasko | 00cbf53 | 2020-06-15 13:58:47 +0200 | [diff] [blame] | 524 | assert(ctx && ctx_node); |
| 525 | |
Radek Krejci | ddace2c | 2021-01-08 11:30:56 +0100 | [diff] [blame] | 526 | LOG_LOCSET(cur_node, NULL, NULL, NULL); |
Radek Krejci | 2efc45b | 2020-12-22 16:25:44 +0100 | [diff] [blame] | 527 | |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 528 | *pred_type = 0; |
| 529 | |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 530 | if (lyxp_next_token(NULL, expr, tok_idx, LYXP_TOKEN_BRACK1)) { |
Radek Krejci | f6a1100 | 2020-08-21 13:29:07 +0200 | [diff] [blame] | 531 | /* '[', no predicate */ |
Radek Krejci | 2efc45b | 2020-12-22 16:25:44 +0100 | [diff] [blame] | 532 | goto cleanup; /* LY_SUCCESS */ |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 533 | } |
| 534 | |
| 535 | if (expr->tokens[*tok_idx] == LYXP_TOKEN_NAMETEST) { |
| 536 | if (ctx_node->nodetype != LYS_LIST) { |
Radek Krejci | 2efc45b | 2020-12-22 16:25:44 +0100 | [diff] [blame] | 537 | LOGVAL(ctx, LYVE_XPATH, "List predicate defined for %s \"%s\" in path.", |
Michal Vasko | 6973015 | 2020-10-09 16:30:07 +0200 | [diff] [blame] | 538 | lys_nodetype2str(ctx_node->nodetype), ctx_node->name); |
Radek Krejci | 2efc45b | 2020-12-22 16:25:44 +0100 | [diff] [blame] | 539 | ret = LY_EVALID; |
| 540 | goto cleanup; |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 541 | } else if (ctx_node->flags & LYS_KEYLESS) { |
Radek Krejci | 2efc45b | 2020-12-22 16:25:44 +0100 | [diff] [blame] | 542 | LOGVAL(ctx, LYVE_XPATH, "List predicate defined for keyless %s \"%s\" in path.", |
Michal Vasko | 6973015 | 2020-10-09 16:30:07 +0200 | [diff] [blame] | 543 | lys_nodetype2str(ctx_node->nodetype), ctx_node->name); |
Radek Krejci | 2efc45b | 2020-12-22 16:25:44 +0100 | [diff] [blame] | 544 | ret = LY_EVALID; |
| 545 | goto cleanup; |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 546 | } |
| 547 | |
| 548 | do { |
| 549 | /* NameTest, find the key */ |
Michal Vasko | 8cc3f66 | 2022-03-29 11:25:51 +0200 | [diff] [blame] | 550 | LY_CHECK_RET(ly_path_compile_snode(ctx, cur_node, cur_mod, ctx_node, expr, *tok_idx, format, prefix_data, |
| 551 | NULL, 0, &key, NULL)); |
| 552 | if ((key->nodetype != LYS_LEAF) || !(key->flags & LYS_KEY)) { |
Radek Krejci | 2efc45b | 2020-12-22 16:25:44 +0100 | [diff] [blame] | 553 | LOGVAL(ctx, LYVE_XPATH, "Key expected instead of %s \"%s\" in path.", lys_nodetype2str(key->nodetype), |
| 554 | key->name); |
| 555 | ret = LY_EVALID; |
| 556 | goto cleanup; |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 557 | } |
| 558 | ++(*tok_idx); |
| 559 | |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 560 | if (!*pred_type) { |
Radek Krejci | f6a1100 | 2020-08-21 13:29:07 +0200 | [diff] [blame] | 561 | /* new predicate */ |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 562 | *pred_type = LY_PATH_PREDTYPE_LIST; |
| 563 | } |
| 564 | assert(*pred_type == LY_PATH_PREDTYPE_LIST); |
Radek Krejci | 2efc45b | 2020-12-22 16:25:44 +0100 | [diff] [blame] | 565 | LY_ARRAY_NEW_GOTO(ctx, *predicates, p, ret, cleanup); |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 566 | p->key = key; |
| 567 | |
| 568 | /* '=' */ |
| 569 | assert(expr->tokens[*tok_idx] == LYXP_TOKEN_OPER_EQUAL); |
| 570 | ++(*tok_idx); |
| 571 | |
Michal Vasko | 4911eeb | 2021-06-28 11:23:05 +0200 | [diff] [blame] | 572 | /* Literal or Number */ |
| 573 | assert((expr->tokens[*tok_idx] == LYXP_TOKEN_LITERAL) || (expr->tokens[*tok_idx] == LYXP_TOKEN_NUMBER)); |
| 574 | if (expr->tokens[*tok_idx] == LYXP_TOKEN_LITERAL) { |
| 575 | /* skip quotes */ |
| 576 | val = expr->expr + expr->tok_pos[*tok_idx] + 1; |
| 577 | val_len = expr->tok_len[*tok_idx] - 2; |
| 578 | } else { |
| 579 | val = expr->expr + expr->tok_pos[*tok_idx]; |
| 580 | val_len = expr->tok_len[*tok_idx]; |
| 581 | } |
| 582 | |
| 583 | /* store the value */ |
Radek Krejci | ddace2c | 2021-01-08 11:30:56 +0100 | [diff] [blame] | 584 | LOG_LOCSET(key, NULL, NULL, NULL); |
Michal Vasko | 4911eeb | 2021-06-28 11:23:05 +0200 | [diff] [blame] | 585 | ret = lyd_value_store(ctx, &p->value, ((struct lysc_node_leaf *)key)->type, val, val_len, NULL, format, |
| 586 | prefix_data, LYD_HINT_DATA, key, NULL); |
Radek Krejci | ddace2c | 2021-01-08 11:30:56 +0100 | [diff] [blame] | 587 | LOG_LOCBACK(key ? 1 : 0, 0, 0, 0); |
Michal Vasko | 55b8481 | 2021-05-11 09:23:58 +0200 | [diff] [blame] | 588 | LY_CHECK_ERR_GOTO(ret, p->value.realtype = NULL, cleanup); |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 589 | ++(*tok_idx); |
| 590 | |
Michal Vasko | ae87566 | 2020-10-21 10:33:17 +0200 | [diff] [blame] | 591 | /* "allocate" the type to avoid problems when freeing the value after the type was freed */ |
Michal Vasko | 04338d9 | 2021-09-01 07:58:14 +0200 | [diff] [blame] | 592 | LY_ATOMIC_INC_BARRIER(((struct lysc_type *)p->value.realtype)->refcount); |
Michal Vasko | ae87566 | 2020-10-21 10:33:17 +0200 | [diff] [blame] | 593 | |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 594 | /* ']' */ |
| 595 | assert(expr->tokens[*tok_idx] == LYXP_TOKEN_BRACK2); |
| 596 | ++(*tok_idx); |
| 597 | |
| 598 | /* another predicate follows? */ |
| 599 | } while (!lyxp_next_token(NULL, expr, tok_idx, LYXP_TOKEN_BRACK1)); |
| 600 | |
| 601 | /* check that all keys were set */ |
| 602 | key_count = 0; |
Michal Vasko | 544e58a | 2021-01-28 14:33:41 +0100 | [diff] [blame] | 603 | for (key = lysc_node_child(ctx_node); key && (key->flags & LYS_KEY); key = key->next) { |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 604 | ++key_count; |
| 605 | } |
Michal Vasko | fd69e1d | 2020-07-03 11:57:17 +0200 | [diff] [blame] | 606 | if (LY_ARRAY_COUNT(*predicates) != key_count) { |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 607 | /* names (keys) are unique - it was checked when parsing */ |
Radek Krejci | 2efc45b | 2020-12-22 16:25:44 +0100 | [diff] [blame] | 608 | LOGVAL(ctx, LYVE_XPATH, "Predicate missing for a key of %s \"%s\" in path.", |
Michal Vasko | 6973015 | 2020-10-09 16:30:07 +0200 | [diff] [blame] | 609 | lys_nodetype2str(ctx_node->nodetype), ctx_node->name); |
Michal Vasko | f7e16e2 | 2020-10-21 09:24:39 +0200 | [diff] [blame] | 610 | ly_path_predicates_free(ctx, LY_PATH_PREDTYPE_LIST, *predicates); |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 611 | *predicates = NULL; |
Radek Krejci | 2efc45b | 2020-12-22 16:25:44 +0100 | [diff] [blame] | 612 | ret = LY_EVALID; |
| 613 | goto cleanup; |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 614 | } |
| 615 | |
| 616 | } else if (expr->tokens[*tok_idx] == LYXP_TOKEN_DOT) { |
| 617 | if (ctx_node->nodetype != LYS_LEAFLIST) { |
Radek Krejci | 2efc45b | 2020-12-22 16:25:44 +0100 | [diff] [blame] | 618 | LOGVAL(ctx, LYVE_XPATH, "Leaf-list predicate defined for %s \"%s\" in path.", |
Michal Vasko | 6973015 | 2020-10-09 16:30:07 +0200 | [diff] [blame] | 619 | lys_nodetype2str(ctx_node->nodetype), ctx_node->name); |
Radek Krejci | 2efc45b | 2020-12-22 16:25:44 +0100 | [diff] [blame] | 620 | ret = LY_EVALID; |
| 621 | goto cleanup; |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 622 | } |
| 623 | ++(*tok_idx); |
| 624 | |
| 625 | /* new predicate */ |
| 626 | *pred_type = LY_PATH_PREDTYPE_LEAFLIST; |
Radek Krejci | 2efc45b | 2020-12-22 16:25:44 +0100 | [diff] [blame] | 627 | LY_ARRAY_NEW_GOTO(ctx, *predicates, p, ret, cleanup); |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 628 | |
| 629 | /* '=' */ |
| 630 | assert(expr->tokens[*tok_idx] == LYXP_TOKEN_OPER_EQUAL); |
| 631 | ++(*tok_idx); |
| 632 | |
Michal Vasko | 4911eeb | 2021-06-28 11:23:05 +0200 | [diff] [blame] | 633 | /* Literal or Number */ |
| 634 | assert((expr->tokens[*tok_idx] == LYXP_TOKEN_LITERAL) || (expr->tokens[*tok_idx] == LYXP_TOKEN_NUMBER)); |
| 635 | if (expr->tokens[*tok_idx] == LYXP_TOKEN_LITERAL) { |
| 636 | /* skip quotes */ |
| 637 | val = expr->expr + expr->tok_pos[*tok_idx] + 1; |
| 638 | val_len = expr->tok_len[*tok_idx] - 2; |
| 639 | } else { |
| 640 | val = expr->expr + expr->tok_pos[*tok_idx]; |
| 641 | val_len = expr->tok_len[*tok_idx]; |
| 642 | } |
| 643 | |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 644 | /* store the value */ |
Radek Krejci | ddace2c | 2021-01-08 11:30:56 +0100 | [diff] [blame] | 645 | LOG_LOCSET(ctx_node, NULL, NULL, NULL); |
Michal Vasko | 4911eeb | 2021-06-28 11:23:05 +0200 | [diff] [blame] | 646 | ret = lyd_value_store(ctx, &p->value, ((struct lysc_node_leaflist *)ctx_node)->type, val, val_len, NULL, format, |
| 647 | prefix_data, LYD_HINT_DATA, ctx_node, NULL); |
Radek Krejci | ddace2c | 2021-01-08 11:30:56 +0100 | [diff] [blame] | 648 | LOG_LOCBACK(ctx_node ? 1 : 0, 0, 0, 0); |
Michal Vasko | 55b8481 | 2021-05-11 09:23:58 +0200 | [diff] [blame] | 649 | LY_CHECK_ERR_GOTO(ret, p->value.realtype = NULL, cleanup); |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 650 | ++(*tok_idx); |
| 651 | |
Michal Vasko | ae87566 | 2020-10-21 10:33:17 +0200 | [diff] [blame] | 652 | /* "allocate" the type to avoid problems when freeing the value after the type was freed */ |
Michal Vasko | 04338d9 | 2021-09-01 07:58:14 +0200 | [diff] [blame] | 653 | LY_ATOMIC_INC_BARRIER(((struct lysc_type *)p->value.realtype)->refcount); |
Michal Vasko | ae87566 | 2020-10-21 10:33:17 +0200 | [diff] [blame] | 654 | |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 655 | /* ']' */ |
| 656 | assert(expr->tokens[*tok_idx] == LYXP_TOKEN_BRACK2); |
| 657 | ++(*tok_idx); |
| 658 | } else { |
| 659 | assert(expr->tokens[*tok_idx] == LYXP_TOKEN_NUMBER); |
| 660 | if (!(ctx_node->nodetype & (LYS_LEAFLIST | LYS_LIST))) { |
Radek Krejci | 2efc45b | 2020-12-22 16:25:44 +0100 | [diff] [blame] | 661 | ret = LY_EVALID; |
| 662 | LOGVAL(ctx, LYVE_XPATH, "Positional predicate defined for %s \"%s\" in path.", |
Michal Vasko | 6973015 | 2020-10-09 16:30:07 +0200 | [diff] [blame] | 663 | lys_nodetype2str(ctx_node->nodetype), ctx_node->name); |
Radek Krejci | 2efc45b | 2020-12-22 16:25:44 +0100 | [diff] [blame] | 664 | goto cleanup; |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 665 | } else if (ctx_node->flags & LYS_CONFIG_W) { |
Radek Krejci | 2efc45b | 2020-12-22 16:25:44 +0100 | [diff] [blame] | 666 | ret = LY_EVALID; |
| 667 | LOGVAL(ctx, LYVE_XPATH, "Positional predicate defined for configuration %s \"%s\" in path.", |
Michal Vasko | 6973015 | 2020-10-09 16:30:07 +0200 | [diff] [blame] | 668 | lys_nodetype2str(ctx_node->nodetype), ctx_node->name); |
Radek Krejci | 2efc45b | 2020-12-22 16:25:44 +0100 | [diff] [blame] | 669 | goto cleanup; |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 670 | } |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 671 | |
| 672 | /* new predicate */ |
| 673 | *pred_type = LY_PATH_PREDTYPE_POSITION; |
Radek Krejci | 2efc45b | 2020-12-22 16:25:44 +0100 | [diff] [blame] | 674 | LY_ARRAY_NEW_GOTO(ctx, *predicates, p, ret, cleanup); |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 675 | |
| 676 | /* syntax was already checked */ |
Michal Vasko | 8cc3f66 | 2022-03-29 11:25:51 +0200 | [diff] [blame] | 677 | p->position = strtoull(expr->expr + expr->tok_pos[*tok_idx], (char **)&val, LY_BASE_DEC); |
Michal Vasko | 00cbf53 | 2020-06-15 13:58:47 +0200 | [diff] [blame] | 678 | ++(*tok_idx); |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 679 | |
| 680 | /* ']' */ |
| 681 | assert(expr->tokens[*tok_idx] == LYXP_TOKEN_BRACK2); |
| 682 | ++(*tok_idx); |
| 683 | } |
| 684 | |
Radek Krejci | 2efc45b | 2020-12-22 16:25:44 +0100 | [diff] [blame] | 685 | cleanup: |
Radek Krejci | ddace2c | 2021-01-08 11:30:56 +0100 | [diff] [blame] | 686 | LOG_LOCBACK(cur_node ? 1 : 0, 0, 0, 0); |
Radek Krejci | 2efc45b | 2020-12-22 16:25:44 +0100 | [diff] [blame] | 687 | return ret; |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 688 | } |
| 689 | |
| 690 | /** |
| 691 | * @brief Compile leafref predicate. Actually, it is only checked. |
| 692 | * |
| 693 | * @param[in] ctx_node Context node, node for which the predicate is defined. |
| 694 | * @param[in] cur_node Current (original context) node. |
| 695 | * @param[in] expr Parsed path. |
| 696 | * @param[in,out] tok_idx Index in @p expr, is adjusted for parsed tokens. |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 697 | * @param[in] format Format of the path. |
Michal Vasko | c8a230d | 2020-08-14 12:17:10 +0200 | [diff] [blame] | 698 | * @param[in] prefix_data Format-specific data for resolving any prefixes (see ::ly_resolve_prefix). |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 699 | * @return LY_ERR value. |
| 700 | */ |
| 701 | static LY_ERR |
| 702 | ly_path_compile_predicate_leafref(const struct lysc_node *ctx_node, const struct lysc_node *cur_node, |
Michal Vasko | dd528af | 2022-08-08 14:35:07 +0200 | [diff] [blame] | 703 | const struct lyxp_expr *expr, uint32_t *tok_idx, LY_VALUE_FORMAT format, void *prefix_data) |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 704 | { |
Radek Krejci | 2efc45b | 2020-12-22 16:25:44 +0100 | [diff] [blame] | 705 | LY_ERR ret = LY_SUCCESS; |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 706 | const struct lysc_node *key, *node, *node2; |
Radek Krejci | 2efc45b | 2020-12-22 16:25:44 +0100 | [diff] [blame] | 707 | struct ly_ctx *ctx = cur_node->module->ctx; |
| 708 | |
Radek Krejci | ddace2c | 2021-01-08 11:30:56 +0100 | [diff] [blame] | 709 | LOG_LOCSET(cur_node, NULL, NULL, NULL); |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 710 | |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 711 | if (lyxp_next_token(NULL, expr, tok_idx, LYXP_TOKEN_BRACK1)) { |
Radek Krejci | f6a1100 | 2020-08-21 13:29:07 +0200 | [diff] [blame] | 712 | /* '[', no predicate */ |
Radek Krejci | 2efc45b | 2020-12-22 16:25:44 +0100 | [diff] [blame] | 713 | goto cleanup; /* LY_SUCCESS */ |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 714 | } |
| 715 | |
| 716 | if (ctx_node->nodetype != LYS_LIST) { |
Radek Krejci | 2efc45b | 2020-12-22 16:25:44 +0100 | [diff] [blame] | 717 | LOGVAL(ctx, LYVE_XPATH, "List predicate defined for %s \"%s\" in path.", |
Michal Vasko | 6973015 | 2020-10-09 16:30:07 +0200 | [diff] [blame] | 718 | lys_nodetype2str(ctx_node->nodetype), ctx_node->name); |
Radek Krejci | 2efc45b | 2020-12-22 16:25:44 +0100 | [diff] [blame] | 719 | ret = LY_EVALID; |
| 720 | goto cleanup; |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 721 | } else if (ctx_node->flags & LYS_KEYLESS) { |
Radek Krejci | 2efc45b | 2020-12-22 16:25:44 +0100 | [diff] [blame] | 722 | LOGVAL(ctx, LYVE_XPATH, "List predicate defined for keyless %s \"%s\" in path.", |
Michal Vasko | 6973015 | 2020-10-09 16:30:07 +0200 | [diff] [blame] | 723 | lys_nodetype2str(ctx_node->nodetype), ctx_node->name); |
Radek Krejci | 2efc45b | 2020-12-22 16:25:44 +0100 | [diff] [blame] | 724 | ret = LY_EVALID; |
| 725 | goto cleanup; |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 726 | } |
| 727 | |
| 728 | do { |
| 729 | /* NameTest, find the key */ |
Michal Vasko | 8cc3f66 | 2022-03-29 11:25:51 +0200 | [diff] [blame] | 730 | ret = ly_path_compile_snode(ctx, cur_node, cur_node->module, ctx_node, expr, *tok_idx, format, prefix_data, |
| 731 | NULL, 0, &key, NULL); |
Radek Krejci | 2efc45b | 2020-12-22 16:25:44 +0100 | [diff] [blame] | 732 | LY_CHECK_GOTO(ret, cleanup); |
Michal Vasko | 8cc3f66 | 2022-03-29 11:25:51 +0200 | [diff] [blame] | 733 | if ((key->nodetype != LYS_LEAF) || !(key->flags & LYS_KEY)) { |
Radek Krejci | 2efc45b | 2020-12-22 16:25:44 +0100 | [diff] [blame] | 734 | LOGVAL(ctx, LYVE_XPATH, "Key expected instead of %s \"%s\" in path.", |
Michal Vasko | 6973015 | 2020-10-09 16:30:07 +0200 | [diff] [blame] | 735 | lys_nodetype2str(key->nodetype), key->name); |
Radek Krejci | 2efc45b | 2020-12-22 16:25:44 +0100 | [diff] [blame] | 736 | ret = LY_EVALID; |
| 737 | goto cleanup; |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 738 | } |
| 739 | ++(*tok_idx); |
| 740 | |
| 741 | /* we are not actually compiling, throw the key away */ |
| 742 | (void)key; |
| 743 | |
| 744 | /* '=' */ |
| 745 | assert(expr->tokens[*tok_idx] == LYXP_TOKEN_OPER_EQUAL); |
| 746 | ++(*tok_idx); |
| 747 | |
| 748 | /* FuncName */ |
| 749 | assert(expr->tokens[*tok_idx] == LYXP_TOKEN_FUNCNAME); |
| 750 | ++(*tok_idx); |
| 751 | |
| 752 | /* evaluating from the "current()" node */ |
| 753 | node = cur_node; |
| 754 | |
| 755 | /* '(' */ |
| 756 | assert(expr->tokens[*tok_idx] == LYXP_TOKEN_PAR1); |
| 757 | ++(*tok_idx); |
| 758 | |
| 759 | /* ')' */ |
| 760 | assert(expr->tokens[*tok_idx] == LYXP_TOKEN_PAR2); |
| 761 | ++(*tok_idx); |
| 762 | |
| 763 | do { |
| 764 | /* '/' */ |
| 765 | assert(expr->tokens[*tok_idx] == LYXP_TOKEN_OPER_PATH); |
| 766 | ++(*tok_idx); |
| 767 | |
| 768 | /* go to parent */ |
| 769 | if (!node) { |
Radek Krejci | 2efc45b | 2020-12-22 16:25:44 +0100 | [diff] [blame] | 770 | LOGVAL(ctx, LYVE_XPATH, "Too many parent references in path."); |
| 771 | ret = LY_EVALID; |
| 772 | goto cleanup; |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 773 | } |
| 774 | node = lysc_data_parent(node); |
| 775 | |
| 776 | /* '..' */ |
| 777 | assert(expr->tokens[*tok_idx] == LYXP_TOKEN_DDOT); |
| 778 | ++(*tok_idx); |
| 779 | } while (expr->tokens[*tok_idx + 1] == LYXP_TOKEN_DDOT); |
| 780 | |
| 781 | do { |
| 782 | /* '/' */ |
| 783 | assert(expr->tokens[*tok_idx] == LYXP_TOKEN_OPER_PATH); |
| 784 | ++(*tok_idx); |
| 785 | |
| 786 | /* NameTest */ |
| 787 | assert(expr->tokens[*tok_idx] == LYXP_TOKEN_NAMETEST); |
Michal Vasko | 8cc3f66 | 2022-03-29 11:25:51 +0200 | [diff] [blame] | 788 | LY_CHECK_RET(ly_path_compile_snode(ctx, cur_node, cur_node->module, node, expr, *tok_idx, format, |
| 789 | prefix_data, NULL, 0, &node2, NULL)); |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 790 | node = node2; |
| 791 | ++(*tok_idx); |
| 792 | } while ((*tok_idx + 1 < expr->used) && (expr->tokens[*tok_idx + 1] == LYXP_TOKEN_NAMETEST)); |
| 793 | |
| 794 | /* check the last target node */ |
| 795 | if (node->nodetype != LYS_LEAF) { |
Radek Krejci | 2efc45b | 2020-12-22 16:25:44 +0100 | [diff] [blame] | 796 | LOGVAL(ctx, LYVE_XPATH, "Leaf expected instead of %s \"%s\" in leafref predicate in path.", |
Michal Vasko | 6973015 | 2020-10-09 16:30:07 +0200 | [diff] [blame] | 797 | lys_nodetype2str(node->nodetype), node->name); |
Radek Krejci | 2efc45b | 2020-12-22 16:25:44 +0100 | [diff] [blame] | 798 | ret = LY_EVALID; |
| 799 | goto cleanup; |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 800 | } |
| 801 | |
| 802 | /* we are not actually compiling, throw the rightside node away */ |
| 803 | (void)node; |
| 804 | |
| 805 | /* ']' */ |
| 806 | assert(expr->tokens[*tok_idx] == LYXP_TOKEN_BRACK2); |
| 807 | ++(*tok_idx); |
| 808 | |
Radek Krejci | 0f96988 | 2020-08-21 16:56:47 +0200 | [diff] [blame] | 809 | /* another predicate follows? */ |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 810 | } while (!lyxp_next_token(NULL, expr, tok_idx, LYXP_TOKEN_BRACK1)); |
| 811 | |
Radek Krejci | 2efc45b | 2020-12-22 16:25:44 +0100 | [diff] [blame] | 812 | cleanup: |
Radek Krejci | ddace2c | 2021-01-08 11:30:56 +0100 | [diff] [blame] | 813 | LOG_LOCBACK(1, 0, 0, 0); |
Michal Vasko | 8cc3f66 | 2022-03-29 11:25:51 +0200 | [diff] [blame] | 814 | return (ret == LY_ENOTFOUND) ? LY_EVALID : ret; |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 815 | } |
| 816 | |
Michal Vasko | ed725d7 | 2021-06-23 12:03:45 +0200 | [diff] [blame] | 817 | /** |
| 818 | * @brief Compile path into ly_path structure. Any predicates of a leafref are only checked, not compiled. |
| 819 | * |
| 820 | * @param[in] ctx libyang context. |
| 821 | * @param[in] cur_mod Current module of the path (where it was "instantiated"), ignored of @p lref. Used for nodes |
Radek Krejci | 84d7fd7 | 2021-07-14 18:32:21 +0200 | [diff] [blame] | 822 | * without a prefix for ::LY_VALUE_SCHEMA and ::LY_VALUE_SCHEMA_RESOLVED format. |
Michal Vasko | ed725d7 | 2021-06-23 12:03:45 +0200 | [diff] [blame] | 823 | * @param[in] ctx_node Optional context node, mandatory of @p lref. |
Michal Vasko | 8cc3f66 | 2022-03-29 11:25:51 +0200 | [diff] [blame] | 824 | * @param[in] top_ext Extension instance containing the definition of the data being created. It is used to find the top-level |
Michal Vasko | ed725d7 | 2021-06-23 12:03:45 +0200 | [diff] [blame] | 825 | * node inside the extension instance instead of a module. Note that this is the case not only if the @p ctx_node is NULL, |
| 826 | * but also if the relative path starting in @p ctx_node reaches the document root via double dots. |
| 827 | * @param[in] expr Parsed path. |
| 828 | * @param[in] lref Whether leafref is being compiled or not. |
| 829 | * @param[in] oper Oper option (@ref path_oper_options). |
| 830 | * @param[in] target Target option (@ref path_target_options). |
Michal Vasko | 0884d21 | 2021-10-14 09:21:46 +0200 | [diff] [blame] | 831 | * @param[in] limit_access_tree Whether to limit accessible tree as described in |
| 832 | * [XPath context](https://datatracker.ietf.org/doc/html/rfc7950#section-6.4.1). |
Michal Vasko | ed725d7 | 2021-06-23 12:03:45 +0200 | [diff] [blame] | 833 | * @param[in] format Format of the path. |
| 834 | * @param[in] prefix_data Format-specific data for resolving any prefixes (see ::ly_resolve_prefix). |
Michal Vasko | ed725d7 | 2021-06-23 12:03:45 +0200 | [diff] [blame] | 835 | * @param[out] path Compiled path. |
| 836 | * @return LY_ERECOMPILE, only if @p lref. |
| 837 | * @return LY_ERR value. |
| 838 | */ |
| 839 | static LY_ERR |
| 840 | _ly_path_compile(const struct ly_ctx *ctx, const struct lys_module *cur_mod, const struct lysc_node *ctx_node, |
Michal Vasko | 8cc3f66 | 2022-03-29 11:25:51 +0200 | [diff] [blame] | 841 | const struct lysc_ext_instance *top_ext, const struct lyxp_expr *expr, ly_bool lref, uint8_t oper, uint8_t target, |
Michal Vasko | 0884d21 | 2021-10-14 09:21:46 +0200 | [diff] [blame] | 842 | ly_bool limit_access_tree, LY_VALUE_FORMAT format, void *prefix_data, struct ly_path **path) |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 843 | { |
| 844 | LY_ERR ret = LY_SUCCESS; |
Michal Vasko | dd528af | 2022-08-08 14:35:07 +0200 | [diff] [blame] | 845 | uint32_t tok_idx = 0, getnext_opts; |
Michal Vasko | 6b26e74 | 2020-07-17 15:02:10 +0200 | [diff] [blame] | 846 | const struct lysc_node *node2, *cur_node, *op; |
Michal Vasko | 00cbf53 | 2020-06-15 13:58:47 +0200 | [diff] [blame] | 847 | struct ly_path *p = NULL; |
Michal Vasko | 8cc3f66 | 2022-03-29 11:25:51 +0200 | [diff] [blame] | 848 | struct lysc_ext_instance *ext = NULL; |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 849 | |
Michal Vasko | 00cbf53 | 2020-06-15 13:58:47 +0200 | [diff] [blame] | 850 | assert(ctx); |
Michal Vasko | ed725d7 | 2021-06-23 12:03:45 +0200 | [diff] [blame] | 851 | assert(!lref || ctx_node); |
Michal Vasko | 00cbf53 | 2020-06-15 13:58:47 +0200 | [diff] [blame] | 852 | assert((oper == LY_PATH_OPER_INPUT) || (oper == LY_PATH_OPER_OUTPUT)); |
| 853 | assert((target == LY_PATH_TARGET_SINGLE) || (target == LY_PATH_TARGET_MANY)); |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 854 | |
Michal Vasko | 0884d21 | 2021-10-14 09:21:46 +0200 | [diff] [blame] | 855 | if (!limit_access_tree) { |
| 856 | op = NULL; |
| 857 | } else { |
| 858 | /* find operation, if we are in any */ |
| 859 | for (op = ctx_node; op && !(op->nodetype & (LYS_RPC | LYS_ACTION | LYS_NOTIF)); op = op->parent) {} |
| 860 | } |
Michal Vasko | 6b26e74 | 2020-07-17 15:02:10 +0200 | [diff] [blame] | 861 | |
Radek Krejci | 2efc45b | 2020-12-22 16:25:44 +0100 | [diff] [blame] | 862 | *path = NULL; |
| 863 | |
Michal Vasko | 6b26e74 | 2020-07-17 15:02:10 +0200 | [diff] [blame] | 864 | /* remember original context node */ |
| 865 | cur_node = ctx_node; |
Michal Vasko | 62225e2 | 2022-08-05 10:06:50 +0200 | [diff] [blame] | 866 | LOG_LOCSET(cur_node, NULL, NULL, NULL); |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 867 | |
Michal Vasko | 00cbf53 | 2020-06-15 13:58:47 +0200 | [diff] [blame] | 868 | if (oper == LY_PATH_OPER_OUTPUT) { |
Michal Vasko | 7b1ad1a | 2020-11-02 15:41:27 +0100 | [diff] [blame] | 869 | getnext_opts = LYS_GETNEXT_OUTPUT; |
Michal Vasko | 00cbf53 | 2020-06-15 13:58:47 +0200 | [diff] [blame] | 870 | } else { |
Michal Vasko | 7b1ad1a | 2020-11-02 15:41:27 +0100 | [diff] [blame] | 871 | getnext_opts = 0; |
Michal Vasko | 00cbf53 | 2020-06-15 13:58:47 +0200 | [diff] [blame] | 872 | } |
| 873 | |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 874 | if (expr->tokens[tok_idx] == LYXP_TOKEN_OPER_PATH) { |
| 875 | /* absolute path */ |
| 876 | ctx_node = NULL; |
| 877 | |
| 878 | ++tok_idx; |
| 879 | } else { |
| 880 | /* relative path */ |
Michal Vasko | 8023979 | 2021-11-02 11:48:32 +0100 | [diff] [blame] | 881 | if (!ctx_node) { |
| 882 | LOGVAL(ctx, LYVE_XPATH, "No initial schema parent for a relative path."); |
| 883 | ret = LY_EVALID; |
| 884 | goto cleanup; |
| 885 | } |
| 886 | |
| 887 | /* go up the parents for leafref */ |
Michal Vasko | ed725d7 | 2021-06-23 12:03:45 +0200 | [diff] [blame] | 888 | while (lref && (expr->tokens[tok_idx] == LYXP_TOKEN_DDOT)) { |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 889 | if (!ctx_node) { |
Radek Krejci | 2efc45b | 2020-12-22 16:25:44 +0100 | [diff] [blame] | 890 | LOGVAL(ctx, LYVE_XPATH, "Too many parent references in path."); |
Michal Vasko | 14424ba | 2020-12-09 18:09:51 +0100 | [diff] [blame] | 891 | ret = LY_EVALID; |
| 892 | goto cleanup; |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 893 | } |
| 894 | |
| 895 | /* get parent */ |
| 896 | ctx_node = lysc_data_parent(ctx_node); |
| 897 | |
| 898 | ++tok_idx; |
| 899 | |
| 900 | assert(expr->tokens[tok_idx] == LYXP_TOKEN_OPER_PATH); |
| 901 | ++tok_idx; |
| 902 | } |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 903 | } |
| 904 | |
| 905 | do { |
Michal Vasko | 00cbf53 | 2020-06-15 13:58:47 +0200 | [diff] [blame] | 906 | /* check last compiled inner node, whether it is uniquely identified (even key-less list) */ |
Michal Vasko | ed725d7 | 2021-06-23 12:03:45 +0200 | [diff] [blame] | 907 | if (p && !lref && (target == LY_PATH_TARGET_SINGLE) && (p->node->nodetype == LYS_LIST) && !p->predicates) { |
Radek Krejci | 2efc45b | 2020-12-22 16:25:44 +0100 | [diff] [blame] | 908 | LOGVAL(ctx, LYVE_XPATH, "Predicate missing for %s \"%s\" in path.", |
Michal Vasko | 6973015 | 2020-10-09 16:30:07 +0200 | [diff] [blame] | 909 | lys_nodetype2str(p->node->nodetype), p->node->name); |
Michal Vasko | 14424ba | 2020-12-09 18:09:51 +0100 | [diff] [blame] | 910 | ret = LY_EVALID; |
| 911 | goto cleanup; |
Michal Vasko | 00cbf53 | 2020-06-15 13:58:47 +0200 | [diff] [blame] | 912 | } |
| 913 | |
Michal Vasko | 14424ba | 2020-12-09 18:09:51 +0100 | [diff] [blame] | 914 | /* NameTest */ |
| 915 | LY_CHECK_ERR_GOTO(lyxp_check_token(ctx, expr, tok_idx, LYXP_TOKEN_NAMETEST), ret = LY_EVALID, cleanup); |
| 916 | |
Michal Vasko | 8cc3f66 | 2022-03-29 11:25:51 +0200 | [diff] [blame] | 917 | /* get schema node */ |
| 918 | LY_CHECK_GOTO(ret = ly_path_compile_snode(ctx, cur_node, cur_mod, ctx_node, expr, tok_idx, format, prefix_data, |
| 919 | top_ext, getnext_opts, &node2, &ext), cleanup); |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 920 | ++tok_idx; |
Michal Vasko | 8cc3f66 | 2022-03-29 11:25:51 +0200 | [diff] [blame] | 921 | if ((op && (node2->nodetype & (LYS_RPC | LYS_ACTION | LYS_NOTIF)) && (node2 != op))) { |
| 922 | LOGVAL(ctx, LYVE_XPATH, "Not found node \"%s\" in path.", node2->name); |
Radek Krejci | 8de005f | 2020-06-25 17:02:07 +0200 | [diff] [blame] | 923 | ret = LY_EVALID; |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 924 | goto cleanup; |
| 925 | } |
| 926 | ctx_node = node2; |
| 927 | |
| 928 | /* new path segment */ |
Michal Vasko | 00cbf53 | 2020-06-15 13:58:47 +0200 | [diff] [blame] | 929 | LY_ARRAY_NEW_GOTO(ctx, *path, p, ret, cleanup); |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 930 | p->node = ctx_node; |
Michal Vasko | 8cc3f66 | 2022-03-29 11:25:51 +0200 | [diff] [blame] | 931 | p->ext = ext; |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 932 | |
| 933 | /* compile any predicates */ |
Michal Vasko | ed725d7 | 2021-06-23 12:03:45 +0200 | [diff] [blame] | 934 | if (lref) { |
Michal Vasko | 24fc4d1 | 2021-07-12 14:41:20 +0200 | [diff] [blame] | 935 | ret = ly_path_compile_predicate_leafref(ctx_node, cur_node, expr, &tok_idx, format, prefix_data); |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 936 | } else { |
Michal Vasko | c8a230d | 2020-08-14 12:17:10 +0200 | [diff] [blame] | 937 | ret = ly_path_compile_predicate(ctx, cur_node, cur_mod, ctx_node, expr, &tok_idx, format, prefix_data, |
Michal Vasko | 6973015 | 2020-10-09 16:30:07 +0200 | [diff] [blame] | 938 | &p->predicates, &p->pred_type); |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 939 | } |
| 940 | LY_CHECK_GOTO(ret, cleanup); |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 941 | } while (!lyxp_next_token(NULL, expr, &tok_idx, LYXP_TOKEN_OPER_PATH)); |
| 942 | |
Michal Vasko | 14424ba | 2020-12-09 18:09:51 +0100 | [diff] [blame] | 943 | /* check leftover tokens */ |
| 944 | if (tok_idx < expr->used) { |
Michal Vasko | 49fec8e | 2022-05-24 10:28:33 +0200 | [diff] [blame] | 945 | LOGVAL(ctx, LY_VCODE_XP_INTOK, lyxp_token2str(expr->tokens[tok_idx]), &expr->expr[expr->tok_pos[tok_idx]]); |
Michal Vasko | 14424ba | 2020-12-09 18:09:51 +0100 | [diff] [blame] | 946 | ret = LY_EVALID; |
| 947 | goto cleanup; |
| 948 | } |
| 949 | |
Michal Vasko | 00cbf53 | 2020-06-15 13:58:47 +0200 | [diff] [blame] | 950 | /* check last compiled node */ |
Michal Vasko | ed725d7 | 2021-06-23 12:03:45 +0200 | [diff] [blame] | 951 | if (!lref && (target == LY_PATH_TARGET_SINGLE) && (p->node->nodetype & (LYS_LIST | LYS_LEAFLIST)) && !p->predicates) { |
Radek Krejci | 2efc45b | 2020-12-22 16:25:44 +0100 | [diff] [blame] | 952 | LOGVAL(ctx, LYVE_XPATH, "Predicate missing for %s \"%s\" in path.", |
Michal Vasko | 6973015 | 2020-10-09 16:30:07 +0200 | [diff] [blame] | 953 | lys_nodetype2str(p->node->nodetype), p->node->name); |
Michal Vasko | 14424ba | 2020-12-09 18:09:51 +0100 | [diff] [blame] | 954 | ret = LY_EVALID; |
| 955 | goto cleanup; |
Michal Vasko | 00cbf53 | 2020-06-15 13:58:47 +0200 | [diff] [blame] | 956 | } |
| 957 | |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 958 | cleanup: |
| 959 | if (ret) { |
Michal Vasko | 00cbf53 | 2020-06-15 13:58:47 +0200 | [diff] [blame] | 960 | ly_path_free(ctx, *path); |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 961 | *path = NULL; |
| 962 | } |
Radek Krejci | ddace2c | 2021-01-08 11:30:56 +0100 | [diff] [blame] | 963 | LOG_LOCBACK(1, 0, 0, 0); |
Michal Vasko | 8cc3f66 | 2022-03-29 11:25:51 +0200 | [diff] [blame] | 964 | return (ret == LY_ENOTFOUND) ? LY_EVALID : ret; |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 965 | } |
| 966 | |
| 967 | LY_ERR |
Michal Vasko | ed725d7 | 2021-06-23 12:03:45 +0200 | [diff] [blame] | 968 | ly_path_compile(const struct ly_ctx *ctx, const struct lys_module *cur_mod, const struct lysc_node *ctx_node, |
Michal Vasko | 8cc3f66 | 2022-03-29 11:25:51 +0200 | [diff] [blame] | 969 | const struct lysc_ext_instance *top_ext, const struct lyxp_expr *expr, uint8_t oper, uint8_t target, |
Michal Vasko | 0884d21 | 2021-10-14 09:21:46 +0200 | [diff] [blame] | 970 | ly_bool limit_access_tree, LY_VALUE_FORMAT format, void *prefix_data, struct ly_path **path) |
Michal Vasko | ed725d7 | 2021-06-23 12:03:45 +0200 | [diff] [blame] | 971 | { |
Michal Vasko | 8cc3f66 | 2022-03-29 11:25:51 +0200 | [diff] [blame] | 972 | return _ly_path_compile(ctx, cur_mod, ctx_node, top_ext, expr, 0, oper, target, limit_access_tree, format, |
| 973 | prefix_data, path); |
Michal Vasko | ed725d7 | 2021-06-23 12:03:45 +0200 | [diff] [blame] | 974 | } |
| 975 | |
| 976 | LY_ERR |
Michal Vasko | 8cc3f66 | 2022-03-29 11:25:51 +0200 | [diff] [blame] | 977 | ly_path_compile_leafref(const struct ly_ctx *ctx, const struct lysc_node *ctx_node, const struct lysc_ext_instance *top_ext, |
Michal Vasko | ed725d7 | 2021-06-23 12:03:45 +0200 | [diff] [blame] | 978 | const struct lyxp_expr *expr, uint8_t oper, uint8_t target, LY_VALUE_FORMAT format, void *prefix_data, |
Michal Vasko | 24fc4d1 | 2021-07-12 14:41:20 +0200 | [diff] [blame] | 979 | struct ly_path **path) |
Michal Vasko | ed725d7 | 2021-06-23 12:03:45 +0200 | [diff] [blame] | 980 | { |
Michal Vasko | 8cc3f66 | 2022-03-29 11:25:51 +0200 | [diff] [blame] | 981 | return _ly_path_compile(ctx, ctx_node->module, ctx_node, top_ext, expr, 1, oper, target, 1, format, prefix_data, path); |
Michal Vasko | ed725d7 | 2021-06-23 12:03:45 +0200 | [diff] [blame] | 982 | } |
| 983 | |
| 984 | LY_ERR |
Michal Vasko | fd69e1d | 2020-07-03 11:57:17 +0200 | [diff] [blame] | 985 | ly_path_eval_partial(const struct ly_path *path, const struct lyd_node *start, LY_ARRAY_COUNT_TYPE *path_idx, |
Radek Krejci | 0f96988 | 2020-08-21 16:56:47 +0200 | [diff] [blame] | 986 | struct lyd_node **match) |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 987 | { |
Michal Vasko | fd69e1d | 2020-07-03 11:57:17 +0200 | [diff] [blame] | 988 | LY_ARRAY_COUNT_TYPE u; |
Michal Vasko | e43e21f | 2022-06-07 12:26:36 +0200 | [diff] [blame] | 989 | struct lyd_node *prev_node = NULL, *elem, *node = NULL, *target; |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 990 | uint64_t pos; |
| 991 | |
| 992 | assert(path && start); |
| 993 | |
| 994 | if (lysc_data_parent(path[0].node)) { |
| 995 | /* relative path, start from the parent children */ |
Radek Krejci | a1c1e54 | 2020-09-29 16:06:52 +0200 | [diff] [blame] | 996 | start = lyd_child(start); |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 997 | } else { |
| 998 | /* absolute path, start from the first top-level sibling */ |
| 999 | while (start->parent) { |
Michal Vasko | 9e68508 | 2021-01-29 14:49:09 +0100 | [diff] [blame] | 1000 | start = lyd_parent(start); |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 1001 | } |
| 1002 | while (start->prev->next) { |
| 1003 | start = start->prev; |
| 1004 | } |
| 1005 | } |
| 1006 | |
| 1007 | LY_ARRAY_FOR(path, u) { |
| 1008 | switch (path[u].pred_type) { |
| 1009 | case LY_PATH_PREDTYPE_POSITION: |
| 1010 | /* we cannot use hashes and want an instance on a specific position */ |
| 1011 | pos = 1; |
Michal Vasko | e43e21f | 2022-06-07 12:26:36 +0200 | [diff] [blame] | 1012 | node = NULL; |
| 1013 | LYD_LIST_FOR_INST(start, path[u].node, elem) { |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 1014 | if (pos == path[u].predicates[0].position) { |
Michal Vasko | e43e21f | 2022-06-07 12:26:36 +0200 | [diff] [blame] | 1015 | node = elem; |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 1016 | break; |
| 1017 | } |
| 1018 | ++pos; |
| 1019 | } |
| 1020 | break; |
| 1021 | case LY_PATH_PREDTYPE_LEAFLIST: |
| 1022 | /* we will use hashes to find one leaf-list instance */ |
| 1023 | LY_CHECK_RET(lyd_create_term2(path[u].node, &path[u].predicates[0].value, &target)); |
| 1024 | lyd_find_sibling_first(start, target, &node); |
| 1025 | lyd_free_tree(target); |
| 1026 | break; |
| 1027 | case LY_PATH_PREDTYPE_LIST: |
| 1028 | /* we will use hashes to find one list instance */ |
| 1029 | LY_CHECK_RET(lyd_create_list(path[u].node, path[u].predicates, &target)); |
| 1030 | lyd_find_sibling_first(start, target, &node); |
| 1031 | lyd_free_tree(target); |
| 1032 | break; |
| 1033 | case LY_PATH_PREDTYPE_NONE: |
| 1034 | /* we will use hashes to find one any/container/leaf instance */ |
| 1035 | lyd_find_sibling_val(start, path[u].node, NULL, 0, &node); |
| 1036 | break; |
| 1037 | } |
| 1038 | |
| 1039 | if (!node) { |
| 1040 | /* no matching nodes */ |
| 1041 | break; |
| 1042 | } |
| 1043 | |
Michal Vasko | 00cbf53 | 2020-06-15 13:58:47 +0200 | [diff] [blame] | 1044 | /* rememeber previous node */ |
| 1045 | prev_node = node; |
| 1046 | |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 1047 | /* next path segment, if any */ |
Radek Krejci | a1c1e54 | 2020-09-29 16:06:52 +0200 | [diff] [blame] | 1048 | start = lyd_child(node); |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 1049 | } |
| 1050 | |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 1051 | if (node) { |
Michal Vasko | 00cbf53 | 2020-06-15 13:58:47 +0200 | [diff] [blame] | 1052 | /* we have found the full path */ |
| 1053 | if (path_idx) { |
| 1054 | *path_idx = u; |
| 1055 | } |
| 1056 | if (match) { |
| 1057 | *match = node; |
| 1058 | } |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 1059 | return LY_SUCCESS; |
Michal Vasko | 00cbf53 | 2020-06-15 13:58:47 +0200 | [diff] [blame] | 1060 | |
| 1061 | } else if (prev_node) { |
| 1062 | /* we have found only some partial match */ |
| 1063 | if (path_idx) { |
| 1064 | *path_idx = u - 1; |
| 1065 | } |
| 1066 | if (match) { |
| 1067 | *match = prev_node; |
| 1068 | } |
| 1069 | return LY_EINCOMPLETE; |
| 1070 | } |
| 1071 | |
| 1072 | /* we have not found any nodes */ |
| 1073 | if (path_idx) { |
| 1074 | *path_idx = 0; |
| 1075 | } |
| 1076 | if (match) { |
| 1077 | *match = NULL; |
| 1078 | } |
| 1079 | return LY_ENOTFOUND; |
| 1080 | } |
| 1081 | |
| 1082 | LY_ERR |
| 1083 | ly_path_eval(const struct ly_path *path, const struct lyd_node *start, struct lyd_node **match) |
| 1084 | { |
| 1085 | LY_ERR ret; |
| 1086 | struct lyd_node *m; |
| 1087 | |
| 1088 | ret = ly_path_eval_partial(path, start, NULL, &m); |
| 1089 | |
| 1090 | if (ret == LY_SUCCESS) { |
| 1091 | /* last node was found */ |
| 1092 | if (match) { |
| 1093 | *match = m; |
| 1094 | } |
| 1095 | return LY_SUCCESS; |
| 1096 | } |
| 1097 | |
| 1098 | /* not a full match */ |
| 1099 | if (match) { |
| 1100 | *match = NULL; |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 1101 | } |
| 1102 | return LY_ENOTFOUND; |
| 1103 | } |
| 1104 | |
| 1105 | LY_ERR |
| 1106 | ly_path_dup(const struct ly_ctx *ctx, const struct ly_path *path, struct ly_path **dup) |
| 1107 | { |
Michal Vasko | fd69e1d | 2020-07-03 11:57:17 +0200 | [diff] [blame] | 1108 | LY_ARRAY_COUNT_TYPE u, v; |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 1109 | |
| 1110 | if (!path) { |
| 1111 | return LY_SUCCESS; |
| 1112 | } |
| 1113 | |
Michal Vasko | fd69e1d | 2020-07-03 11:57:17 +0200 | [diff] [blame] | 1114 | LY_ARRAY_CREATE_RET(ctx, *dup, LY_ARRAY_COUNT(path), LY_EMEM); |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 1115 | LY_ARRAY_FOR(path, u) { |
| 1116 | LY_ARRAY_INCREMENT(*dup); |
| 1117 | (*dup)[u].node = path[u].node; |
| 1118 | if (path[u].predicates) { |
Michal Vasko | fd69e1d | 2020-07-03 11:57:17 +0200 | [diff] [blame] | 1119 | LY_ARRAY_CREATE_RET(ctx, (*dup)[u].predicates, LY_ARRAY_COUNT(path[u].predicates), LY_EMEM); |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 1120 | (*dup)[u].pred_type = path[u].pred_type; |
| 1121 | LY_ARRAY_FOR(path[u].predicates, v) { |
| 1122 | struct ly_path_predicate *pred = &path[u].predicates[v]; |
| 1123 | |
| 1124 | LY_ARRAY_INCREMENT((*dup)[u].predicates); |
| 1125 | switch (path[u].pred_type) { |
| 1126 | case LY_PATH_PREDTYPE_POSITION: |
| 1127 | /* position-predicate */ |
| 1128 | (*dup)[u].predicates[v].position = pred->position; |
| 1129 | break; |
| 1130 | case LY_PATH_PREDTYPE_LIST: |
| 1131 | case LY_PATH_PREDTYPE_LEAFLIST: |
| 1132 | /* key-predicate or leaf-list-predicate */ |
| 1133 | (*dup)[u].predicates[v].key = pred->key; |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 1134 | pred->value.realtype->plugin->duplicate(ctx, &pred->value, &(*dup)[u].predicates[v].value); |
Michal Vasko | 04338d9 | 2021-09-01 07:58:14 +0200 | [diff] [blame] | 1135 | LY_ATOMIC_INC_BARRIER(((struct lysc_type *)pred->value.realtype)->refcount); |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 1136 | break; |
| 1137 | case LY_PATH_PREDTYPE_NONE: |
| 1138 | break; |
| 1139 | } |
| 1140 | } |
| 1141 | } |
| 1142 | } |
| 1143 | |
| 1144 | return LY_SUCCESS; |
| 1145 | } |
| 1146 | |
| 1147 | void |
Michal Vasko | f7e16e2 | 2020-10-21 09:24:39 +0200 | [diff] [blame] | 1148 | ly_path_predicates_free(const struct ly_ctx *ctx, enum ly_path_pred_type pred_type, struct ly_path_predicate *predicates) |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 1149 | { |
Michal Vasko | fd69e1d | 2020-07-03 11:57:17 +0200 | [diff] [blame] | 1150 | LY_ARRAY_COUNT_TYPE u; |
Michal Vasko | c636ea4 | 2022-09-16 10:20:31 +0200 | [diff] [blame] | 1151 | struct lysf_ctx fctx = {.ctx = (struct ly_ctx *)ctx}; |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 1152 | |
| 1153 | if (!predicates) { |
| 1154 | return; |
| 1155 | } |
| 1156 | |
| 1157 | LY_ARRAY_FOR(predicates, u) { |
| 1158 | switch (pred_type) { |
| 1159 | case LY_PATH_PREDTYPE_POSITION: |
| 1160 | case LY_PATH_PREDTYPE_NONE: |
| 1161 | /* nothing to free */ |
| 1162 | break; |
| 1163 | case LY_PATH_PREDTYPE_LIST: |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 1164 | case LY_PATH_PREDTYPE_LEAFLIST: |
Michal Vasko | ae87566 | 2020-10-21 10:33:17 +0200 | [diff] [blame] | 1165 | if (predicates[u].value.realtype) { |
| 1166 | predicates[u].value.realtype->plugin->free(ctx, &predicates[u].value); |
Michal Vasko | c636ea4 | 2022-09-16 10:20:31 +0200 | [diff] [blame] | 1167 | lysc_type_free(&fctx, (struct lysc_type *)predicates[u].value.realtype); |
Michal Vasko | ae87566 | 2020-10-21 10:33:17 +0200 | [diff] [blame] | 1168 | } |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 1169 | break; |
| 1170 | } |
| 1171 | } |
| 1172 | LY_ARRAY_FREE(predicates); |
| 1173 | } |
| 1174 | |
| 1175 | void |
| 1176 | ly_path_free(const struct ly_ctx *ctx, struct ly_path *path) |
| 1177 | { |
Michal Vasko | fd69e1d | 2020-07-03 11:57:17 +0200 | [diff] [blame] | 1178 | LY_ARRAY_COUNT_TYPE u; |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 1179 | |
Michal Vasko | 55b8481 | 2021-05-11 09:23:58 +0200 | [diff] [blame] | 1180 | if (!path) { |
| 1181 | return; |
| 1182 | } |
| 1183 | |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 1184 | LY_ARRAY_FOR(path, u) { |
Michal Vasko | f7e16e2 | 2020-10-21 09:24:39 +0200 | [diff] [blame] | 1185 | ly_path_predicates_free(ctx, path[u].pred_type, path[u].predicates); |
Michal Vasko | 004d315 | 2020-06-11 19:59:22 +0200 | [diff] [blame] | 1186 | } |
| 1187 | LY_ARRAY_FREE(path); |
| 1188 | } |