Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 1 | /** |
| 2 | * @file diff.c |
| 3 | * @author Michal Vasko <mvasko@cesnet.cz> |
| 4 | * @brief diff 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 | */ |
Radek Krejci | f8dc59a | 2020-11-25 13:47:44 +0100 | [diff] [blame] | 14 | #define _POSIX_C_SOURCE 200809L /* strdup */ |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 15 | |
| 16 | #include "diff.h" |
| 17 | |
| 18 | #include <assert.h> |
| 19 | #include <stddef.h> |
Radek Krejci | 47fab89 | 2020-11-05 17:02:41 +0100 | [diff] [blame] | 20 | #include <stdlib.h> |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 21 | #include <string.h> |
| 22 | |
| 23 | #include "common.h" |
Radek Krejci | 47fab89 | 2020-11-05 17:02:41 +0100 | [diff] [blame] | 24 | #include "context.h" |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 25 | #include "log.h" |
Radek Krejci | 47fab89 | 2020-11-05 17:02:41 +0100 | [diff] [blame] | 26 | #include "plugins_types.h" |
| 27 | #include "set.h" |
| 28 | #include "tree.h" |
| 29 | #include "tree_data.h" |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 30 | #include "tree_data_internal.h" |
| 31 | #include "tree_schema.h" |
| 32 | #include "tree_schema_internal.h" |
| 33 | |
| 34 | static const char * |
| 35 | lyd_diff_op2str(enum lyd_diff_op op) |
| 36 | { |
| 37 | switch (op) { |
| 38 | case LYD_DIFF_OP_CREATE: |
| 39 | return "create"; |
| 40 | case LYD_DIFF_OP_DELETE: |
| 41 | return "delete"; |
| 42 | case LYD_DIFF_OP_REPLACE: |
| 43 | return "replace"; |
| 44 | case LYD_DIFF_OP_NONE: |
| 45 | return "none"; |
| 46 | } |
| 47 | |
| 48 | LOGINT(NULL); |
| 49 | return NULL; |
| 50 | } |
| 51 | |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 52 | static enum lyd_diff_op |
| 53 | lyd_diff_str2op(const char *str) |
| 54 | { |
| 55 | switch (str[0]) { |
| 56 | case 'c': |
| 57 | assert(!strcmp(str, "create")); |
| 58 | return LYD_DIFF_OP_CREATE; |
| 59 | case 'd': |
| 60 | assert(!strcmp(str, "delete")); |
| 61 | return LYD_DIFF_OP_DELETE; |
| 62 | case 'r': |
| 63 | assert(!strcmp(str, "replace")); |
| 64 | return LYD_DIFF_OP_REPLACE; |
| 65 | case 'n': |
| 66 | assert(!strcmp(str, "none")); |
| 67 | return LYD_DIFF_OP_NONE; |
| 68 | } |
| 69 | |
| 70 | LOGINT(NULL); |
| 71 | return 0; |
| 72 | } |
| 73 | |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 74 | LY_ERR |
| 75 | lyd_diff_add(const struct lyd_node *node, enum lyd_diff_op op, const char *orig_default, const char *orig_value, |
Radek Krejci | 0f96988 | 2020-08-21 16:56:47 +0200 | [diff] [blame] | 76 | const char *key, const char *value, const char *orig_key, struct lyd_node **diff) |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 77 | { |
| 78 | struct lyd_node *dup, *siblings, *match = NULL, *diff_parent = NULL; |
| 79 | const struct lyd_node *parent = NULL; |
| 80 | const struct lys_module *yang_mod; |
| 81 | |
| 82 | assert(diff); |
| 83 | |
Michal Vasko | 53d4842 | 2020-11-13 18:02:29 +0100 | [diff] [blame] | 84 | /* replace leaf always needs orig-default and orig-value */ |
| 85 | assert((node->schema->nodetype != LYS_LEAF) || (op != LYD_DIFF_OP_REPLACE) || (orig_default && orig_value)); |
| 86 | |
| 87 | /* create on userord needs key/value */ |
| 88 | assert((node->schema->nodetype != LYS_LIST) || !(node->schema->flags & LYS_ORDBY_USER) || (op != LYD_DIFF_OP_CREATE) || |
| 89 | key); |
| 90 | assert((node->schema->nodetype != LYS_LEAFLIST) || !(node->schema->flags & LYS_ORDBY_USER) || |
| 91 | (op != LYD_DIFF_OP_CREATE) || value); |
| 92 | |
| 93 | /* move on userord needs both key and orig-key/value and orig-value */ |
| 94 | assert((node->schema->nodetype != LYS_LIST) || !(node->schema->flags & LYS_ORDBY_USER) || (op != LYD_DIFF_OP_REPLACE) || |
| 95 | (key && orig_key)); |
| 96 | assert((node->schema->nodetype != LYS_LEAFLIST) || !(node->schema->flags & LYS_ORDBY_USER) || |
| 97 | (op != LYD_DIFF_OP_REPLACE) || (value && orig_value)); |
| 98 | |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 99 | /* find the first existing parent */ |
| 100 | siblings = *diff; |
| 101 | while (1) { |
| 102 | /* find next node parent */ |
| 103 | parent = node; |
| 104 | while (parent->parent && (!diff_parent || (parent->parent->schema != diff_parent->schema))) { |
| 105 | parent = (struct lyd_node *)parent->parent; |
| 106 | } |
| 107 | if (parent == node) { |
| 108 | /* no more parents to find */ |
| 109 | break; |
| 110 | } |
| 111 | |
| 112 | /* check whether it exists in the diff */ |
| 113 | if (lyd_find_sibling_first(siblings, parent, &match)) { |
| 114 | break; |
| 115 | } |
| 116 | |
| 117 | /* another parent found */ |
| 118 | diff_parent = match; |
| 119 | |
| 120 | /* move down in the diff */ |
Radek Krejci | a1c1e54 | 2020-09-29 16:06:52 +0200 | [diff] [blame] | 121 | siblings = lyd_child_no_keys(match); |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 122 | } |
| 123 | |
| 124 | /* duplicate the subtree (and connect to the diff if possible) */ |
Michal Vasko | 3a41dff | 2020-07-15 14:30:28 +0200 | [diff] [blame] | 125 | LY_CHECK_RET(lyd_dup_single(node, (struct lyd_node_inner *)diff_parent, |
Michal Vasko | 871a025 | 2020-11-11 18:35:24 +0100 | [diff] [blame] | 126 | LYD_DUP_RECURSIVE | LYD_DUP_NO_META | LYD_DUP_WITH_PARENTS | LYD_DUP_WITH_FLAGS, &dup)); |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 127 | |
| 128 | /* find the first duplicated parent */ |
| 129 | if (!diff_parent) { |
| 130 | diff_parent = (struct lyd_node *)dup->parent; |
| 131 | while (diff_parent && diff_parent->parent) { |
| 132 | diff_parent = (struct lyd_node *)diff_parent->parent; |
| 133 | } |
| 134 | } else { |
| 135 | diff_parent = (struct lyd_node *)dup; |
| 136 | while (diff_parent->parent && (diff_parent->parent->schema == parent->schema)) { |
| 137 | diff_parent = (struct lyd_node *)diff_parent->parent; |
| 138 | } |
| 139 | } |
| 140 | |
| 141 | /* no parent existed, must be manually connected */ |
| 142 | if (!diff_parent) { |
| 143 | /* there actually was no parent to duplicate */ |
Michal Vasko | b104f11 | 2020-07-17 09:54:54 +0200 | [diff] [blame] | 144 | lyd_insert_sibling(*diff, dup, diff); |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 145 | } else if (!diff_parent->parent) { |
Michal Vasko | b104f11 | 2020-07-17 09:54:54 +0200 | [diff] [blame] | 146 | lyd_insert_sibling(*diff, diff_parent, diff); |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 147 | } |
| 148 | |
| 149 | /* get module with the operation metadata */ |
Michal Vasko | b7be7a8 | 2020-08-20 09:09:04 +0200 | [diff] [blame] | 150 | yang_mod = LYD_CTX(node)->list.objs[1]; |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 151 | assert(!strcmp(yang_mod->name, "yang")); |
| 152 | |
| 153 | /* add parent operation, if any */ |
Michal Vasko | 3a41dff | 2020-07-15 14:30:28 +0200 | [diff] [blame] | 154 | if (diff_parent && (diff_parent != dup)) { |
Michal Vasko | 871a025 | 2020-11-11 18:35:24 +0100 | [diff] [blame] | 155 | LY_CHECK_RET(lyd_new_meta(LYD_CTX(node), diff_parent, yang_mod, "operation", "none", 0, NULL)); |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 156 | } |
| 157 | |
| 158 | /* add subtree operation */ |
Michal Vasko | 871a025 | 2020-11-11 18:35:24 +0100 | [diff] [blame] | 159 | LY_CHECK_RET(lyd_new_meta(LYD_CTX(node), dup, yang_mod, "operation", lyd_diff_op2str(op), 0, NULL)); |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 160 | |
| 161 | /* orig-default */ |
Michal Vasko | 3a41dff | 2020-07-15 14:30:28 +0200 | [diff] [blame] | 162 | if (orig_default) { |
Michal Vasko | 871a025 | 2020-11-11 18:35:24 +0100 | [diff] [blame] | 163 | LY_CHECK_RET(lyd_new_meta(LYD_CTX(node), dup, yang_mod, "orig-default", orig_default, 0, NULL)); |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 164 | } |
| 165 | |
| 166 | /* orig-value */ |
Michal Vasko | 3a41dff | 2020-07-15 14:30:28 +0200 | [diff] [blame] | 167 | if (orig_value) { |
Michal Vasko | 871a025 | 2020-11-11 18:35:24 +0100 | [diff] [blame] | 168 | LY_CHECK_RET(lyd_new_meta(LYD_CTX(node), dup, yang_mod, "orig-value", orig_value, 0, NULL)); |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 169 | } |
| 170 | |
| 171 | /* key */ |
Michal Vasko | 3a41dff | 2020-07-15 14:30:28 +0200 | [diff] [blame] | 172 | if (key) { |
Michal Vasko | 871a025 | 2020-11-11 18:35:24 +0100 | [diff] [blame] | 173 | LY_CHECK_RET(lyd_new_meta(LYD_CTX(node), dup, yang_mod, "key", key, 0, NULL)); |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 174 | } |
| 175 | |
| 176 | /* value */ |
Michal Vasko | 3a41dff | 2020-07-15 14:30:28 +0200 | [diff] [blame] | 177 | if (value) { |
Michal Vasko | 871a025 | 2020-11-11 18:35:24 +0100 | [diff] [blame] | 178 | LY_CHECK_RET(lyd_new_meta(LYD_CTX(node), dup, yang_mod, "value", value, 0, NULL)); |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 179 | } |
| 180 | |
| 181 | /* orig-key */ |
Michal Vasko | 3a41dff | 2020-07-15 14:30:28 +0200 | [diff] [blame] | 182 | if (orig_key) { |
Michal Vasko | 871a025 | 2020-11-11 18:35:24 +0100 | [diff] [blame] | 183 | LY_CHECK_RET(lyd_new_meta(LYD_CTX(node), dup, yang_mod, "orig-key", orig_key, 0, NULL)); |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 184 | } |
| 185 | |
| 186 | return LY_SUCCESS; |
| 187 | } |
| 188 | |
| 189 | /** |
| 190 | * @brief Get a userord entry for a specific user-ordered list/leaf-list. Create if does not exist yet. |
| 191 | * |
| 192 | * @param[in] first |
| 193 | * @param[in] schema Schema node of the list/leaf-list. |
| 194 | * @param[in,out] userord Sized array of userord items. |
| 195 | * @return Userord item for all the user-ordered list/leaf-list instances. |
| 196 | */ |
| 197 | static struct lyd_diff_userord * |
| 198 | lyd_diff_userord_get(const struct lyd_node *first, const struct lysc_node *schema, struct lyd_diff_userord **userord) |
| 199 | { |
| 200 | struct lyd_diff_userord *item; |
| 201 | const struct lyd_node *iter, **node; |
| 202 | LY_ARRAY_COUNT_TYPE u; |
| 203 | |
| 204 | LY_ARRAY_FOR(*userord, u) { |
| 205 | if ((*userord)[u].schema == schema) { |
| 206 | return &(*userord)[u]; |
| 207 | } |
| 208 | } |
| 209 | |
| 210 | /* it was not added yet, add it now */ |
| 211 | LY_ARRAY_NEW_RET(schema->module->ctx, *userord, item, NULL); |
| 212 | |
| 213 | item->schema = schema; |
| 214 | item->pos = 0; |
| 215 | item->inst = NULL; |
| 216 | |
| 217 | /* store all the instance pointers in the current order */ |
| 218 | if (first) { |
| 219 | if (first->parent) { |
| 220 | iter = first->parent->child; |
| 221 | } else { |
Radek Krejci | 1e008d2 | 2020-08-17 11:37:37 +0200 | [diff] [blame] | 222 | for (iter = first; iter->prev->next; iter = iter->prev) {} |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 223 | } |
Michal Vasko | d989ba0 | 2020-08-24 10:59:24 +0200 | [diff] [blame] | 224 | for ( ; iter; iter = iter->next) { |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 225 | if (iter->schema == first->schema) { |
| 226 | LY_ARRAY_NEW_RET(schema->module->ctx, item->inst, node, NULL); |
| 227 | *node = iter; |
| 228 | } |
| 229 | } |
| 230 | } |
| 231 | |
| 232 | return item; |
| 233 | } |
| 234 | |
| 235 | /** |
| 236 | * @brief Get all the metadata to be stored in a diff for the 2 nodes. Can be used only for user-ordered |
| 237 | * lists/leaf-lists. |
| 238 | * |
| 239 | * @param[in] first Node from the first tree, can be NULL (on create). |
| 240 | * @param[in] second Node from the second tree, can be NULL (on delete). |
| 241 | * @param[in] options Diff options. |
| 242 | * @param[in,out] userord Sized array of userord items for keeping the current node order. |
| 243 | * @param[out] op Operation. |
| 244 | * @param[out] orig_default Original default metadata. |
| 245 | * @param[out] value Value metadata. |
| 246 | * @param[out] orig_value Original value metadata |
| 247 | * @param[out] key Key metadata. |
| 248 | * @param[out] orig_key Original key metadata. |
| 249 | * @return LY_SUCCESS on success, |
| 250 | * @return LY_ENOT if there is no change to be added into diff, |
| 251 | * @return LY_ERR value on other errors. |
| 252 | */ |
| 253 | static LY_ERR |
Radek Krejci | 1deb5be | 2020-08-26 16:43:36 +0200 | [diff] [blame] | 254 | lyd_diff_userord_attrs(const struct lyd_node *first, const struct lyd_node *second, uint16_t options, |
Radek Krejci | 0f96988 | 2020-08-21 16:56:47 +0200 | [diff] [blame] | 255 | struct lyd_diff_userord **userord, enum lyd_diff_op *op, const char **orig_default, char **value, |
| 256 | char **orig_value, char **key, char **orig_key) |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 257 | { |
| 258 | const struct lysc_node *schema; |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 259 | size_t buflen, bufused, first_pos, second_pos; |
| 260 | struct lyd_diff_userord *userord_item; |
| 261 | |
| 262 | assert(first || second); |
| 263 | |
| 264 | *orig_default = NULL; |
| 265 | *value = NULL; |
| 266 | *orig_value = NULL; |
| 267 | *key = NULL; |
| 268 | *orig_key = NULL; |
| 269 | |
| 270 | schema = first ? first->schema : second->schema; |
| 271 | assert(lysc_is_userordered(schema)); |
| 272 | |
| 273 | /* get userord entry */ |
| 274 | userord_item = lyd_diff_userord_get(first, schema, userord); |
| 275 | LY_CHECK_RET(!userord_item, LY_EMEM); |
| 276 | |
| 277 | /* prepare position of the next instance */ |
| 278 | second_pos = userord_item->pos++; |
| 279 | |
| 280 | /* find user-ordered first position */ |
| 281 | if (first) { |
| 282 | for (first_pos = second_pos; first_pos < LY_ARRAY_COUNT(userord_item->inst); ++first_pos) { |
| 283 | if (userord_item->inst[first_pos] == first) { |
| 284 | break; |
| 285 | } |
| 286 | } |
| 287 | assert(first_pos < LY_ARRAY_COUNT(userord_item->inst)); |
| 288 | } else { |
| 289 | first_pos = 0; |
| 290 | } |
| 291 | |
| 292 | /* learn operation first */ |
| 293 | if (!second) { |
| 294 | *op = LYD_DIFF_OP_DELETE; |
| 295 | } else if (!first) { |
| 296 | *op = LYD_DIFF_OP_CREATE; |
| 297 | } else { |
| 298 | assert(schema->nodetype & (LYS_LIST | LYS_LEAFLIST)); |
Michal Vasko | 8f359bf | 2020-07-28 10:41:15 +0200 | [diff] [blame] | 299 | if (lyd_compare_single(second, userord_item->inst[second_pos], 0)) { |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 300 | /* in first, there is a different instance on the second position, we are going to move 'first' node */ |
| 301 | *op = LYD_DIFF_OP_REPLACE; |
Michal Vasko | 3a41dff | 2020-07-15 14:30:28 +0200 | [diff] [blame] | 302 | } else if ((options & LYD_DIFF_DEFAULTS) && ((first->flags & LYD_DEFAULT) != (second->flags & LYD_DEFAULT))) { |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 303 | /* default flag change */ |
| 304 | *op = LYD_DIFF_OP_NONE; |
| 305 | } else { |
| 306 | /* no changes */ |
| 307 | return LY_ENOT; |
| 308 | } |
| 309 | } |
| 310 | |
| 311 | /* |
| 312 | * set each attribute correctly based on the operation and node type |
| 313 | */ |
| 314 | |
| 315 | /* orig-default */ |
Michal Vasko | 4b715ca | 2020-11-11 18:39:57 +0100 | [diff] [blame] | 316 | if ((schema->nodetype == LYS_LEAFLIST) && ((*op == LYD_DIFF_OP_REPLACE) || (*op == LYD_DIFF_OP_NONE))) { |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 317 | if (first->flags & LYD_DEFAULT) { |
| 318 | *orig_default = "true"; |
| 319 | } else { |
| 320 | *orig_default = "false"; |
| 321 | } |
| 322 | } |
| 323 | |
| 324 | /* value */ |
| 325 | if ((schema->nodetype == LYS_LEAFLIST) && ((*op == LYD_DIFF_OP_REPLACE) || (*op == LYD_DIFF_OP_CREATE))) { |
| 326 | if (second_pos) { |
Michal Vasko | b7be7a8 | 2020-08-20 09:09:04 +0200 | [diff] [blame] | 327 | *value = strdup(LYD_CANON_VALUE(userord_item->inst[second_pos - 1])); |
Michal Vasko | ba99a3e | 2020-08-18 15:50:05 +0200 | [diff] [blame] | 328 | LY_CHECK_ERR_RET(!*value, LOGMEM(schema->module->ctx), LY_EMEM); |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 329 | } else { |
| 330 | *value = strdup(""); |
| 331 | LY_CHECK_ERR_RET(!*value, LOGMEM(schema->module->ctx), LY_EMEM); |
| 332 | } |
| 333 | } |
| 334 | |
| 335 | /* orig-value */ |
| 336 | if ((schema->nodetype == LYS_LEAFLIST) && ((*op == LYD_DIFF_OP_REPLACE) || (*op == LYD_DIFF_OP_DELETE))) { |
| 337 | if (first_pos) { |
Michal Vasko | b7be7a8 | 2020-08-20 09:09:04 +0200 | [diff] [blame] | 338 | *orig_value = strdup(LYD_CANON_VALUE(userord_item->inst[first_pos - 1])); |
Michal Vasko | ba99a3e | 2020-08-18 15:50:05 +0200 | [diff] [blame] | 339 | LY_CHECK_ERR_RET(!*orig_value, LOGMEM(schema->module->ctx), LY_EMEM); |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 340 | } else { |
| 341 | *orig_value = strdup(""); |
| 342 | LY_CHECK_ERR_RET(!*orig_value, LOGMEM(schema->module->ctx), LY_EMEM); |
| 343 | } |
| 344 | } |
| 345 | |
| 346 | /* key */ |
Michal Vasko | 44f3d2c | 2020-08-24 09:49:38 +0200 | [diff] [blame] | 347 | if ((schema->nodetype == LYS_LIST) && ((*op == LYD_DIFF_OP_REPLACE) || (*op == LYD_DIFF_OP_CREATE))) { |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 348 | if (second_pos) { |
| 349 | buflen = bufused = 0; |
| 350 | LY_CHECK_RET(lyd_path_list_predicate(userord_item->inst[second_pos - 1], key, &buflen, &bufused, 0)); |
| 351 | } else { |
| 352 | *key = strdup(""); |
| 353 | LY_CHECK_ERR_RET(!*key, LOGMEM(schema->module->ctx), LY_EMEM); |
| 354 | } |
| 355 | } |
| 356 | |
| 357 | /* orig-key */ |
| 358 | if ((schema->nodetype == LYS_LIST) && ((*op == LYD_DIFF_OP_REPLACE) || (*op == LYD_DIFF_OP_DELETE))) { |
| 359 | if (first_pos) { |
| 360 | buflen = bufused = 0; |
| 361 | LY_CHECK_RET(lyd_path_list_predicate(userord_item->inst[first_pos - 1], orig_key, &buflen, &bufused, 0)); |
| 362 | } else { |
| 363 | *orig_key = strdup(""); |
| 364 | LY_CHECK_ERR_RET(!*orig_key, LOGMEM(schema->module->ctx), LY_EMEM); |
| 365 | } |
| 366 | } |
| 367 | |
| 368 | /* |
| 369 | * update our instances - apply the change |
| 370 | */ |
| 371 | if (*op == LYD_DIFF_OP_CREATE) { |
| 372 | /* insert the instance */ |
| 373 | LY_ARRAY_RESIZE_ERR_RET(schema->module->ctx, userord_item->inst, LY_ARRAY_COUNT(userord_item->inst) + 1, |
Michal Vasko | 6973015 | 2020-10-09 16:30:07 +0200 | [diff] [blame] | 374 | ; , LY_EMEM); |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 375 | if (second_pos < LY_ARRAY_COUNT(userord_item->inst)) { |
| 376 | memmove(userord_item->inst + second_pos + 1, userord_item->inst + second_pos, |
| 377 | (LY_ARRAY_COUNT(userord_item->inst) - second_pos) * sizeof *userord_item->inst); |
| 378 | } |
| 379 | LY_ARRAY_INCREMENT(userord_item->inst); |
| 380 | userord_item->inst[second_pos] = second; |
| 381 | |
| 382 | } else if (*op == LYD_DIFF_OP_DELETE) { |
| 383 | /* remove the instance */ |
| 384 | if (first_pos + 1 < LY_ARRAY_COUNT(userord_item->inst)) { |
| 385 | memmove(userord_item->inst + first_pos, userord_item->inst + first_pos + 1, |
| 386 | (LY_ARRAY_COUNT(userord_item->inst) - first_pos - 1) * sizeof *userord_item->inst); |
| 387 | } |
| 388 | LY_ARRAY_DECREMENT(userord_item->inst); |
| 389 | |
| 390 | } else if (*op == LYD_DIFF_OP_REPLACE) { |
| 391 | /* move the instances */ |
| 392 | memmove(userord_item->inst + second_pos + 1, userord_item->inst + second_pos, |
| 393 | (first_pos - second_pos) * sizeof *userord_item->inst); |
| 394 | userord_item->inst[second_pos] = first; |
| 395 | } |
| 396 | |
| 397 | return LY_SUCCESS; |
| 398 | } |
| 399 | |
| 400 | /** |
| 401 | * @brief Get all the metadata to be stored in a diff for the 2 nodes. Cannot be used for user-ordered |
| 402 | * lists/leaf-lists. |
| 403 | * |
| 404 | * @param[in] first Node from the first tree, can be NULL (on create). |
| 405 | * @param[in] second Node from the second tree, can be NULL (on delete). |
| 406 | * @param[in] options Diff options. |
| 407 | * @param[out] op Operation. |
| 408 | * @param[out] orig_default Original default metadata. |
| 409 | * @param[out] orig_value Original value metadata. |
| 410 | * @return LY_SUCCESS on success, |
| 411 | * @return LY_ENOT if there is no change to be added into diff, |
| 412 | * @return LY_ERR value on other errors. |
| 413 | */ |
| 414 | static LY_ERR |
Radek Krejci | 1deb5be | 2020-08-26 16:43:36 +0200 | [diff] [blame] | 415 | lyd_diff_attrs(const struct lyd_node *first, const struct lyd_node *second, uint16_t options, enum lyd_diff_op *op, |
Radek Krejci | 0f96988 | 2020-08-21 16:56:47 +0200 | [diff] [blame] | 416 | const char **orig_default, char **orig_value) |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 417 | { |
| 418 | const struct lysc_node *schema; |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 419 | |
| 420 | assert(first || second); |
| 421 | |
| 422 | *orig_default = NULL; |
| 423 | *orig_value = NULL; |
| 424 | |
| 425 | schema = first ? first->schema : second->schema; |
| 426 | assert(!lysc_is_userordered(schema)); |
| 427 | |
| 428 | /* learn operation first */ |
| 429 | if (!second) { |
| 430 | *op = LYD_DIFF_OP_DELETE; |
| 431 | } else if (!first) { |
| 432 | *op = LYD_DIFF_OP_CREATE; |
| 433 | } else { |
| 434 | switch (schema->nodetype) { |
| 435 | case LYS_CONTAINER: |
| 436 | case LYS_RPC: |
| 437 | case LYS_ACTION: |
| 438 | case LYS_NOTIF: |
| 439 | /* no changes */ |
| 440 | return LY_ENOT; |
| 441 | case LYS_LIST: |
| 442 | case LYS_LEAFLIST: |
Michal Vasko | 3a41dff | 2020-07-15 14:30:28 +0200 | [diff] [blame] | 443 | if ((options & LYD_DIFF_DEFAULTS) && ((first->flags & LYD_DEFAULT) != (second->flags & LYD_DEFAULT))) { |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 444 | /* default flag change */ |
| 445 | *op = LYD_DIFF_OP_NONE; |
| 446 | } else { |
| 447 | /* no changes */ |
| 448 | return LY_ENOT; |
| 449 | } |
| 450 | break; |
| 451 | case LYS_LEAF: |
| 452 | case LYS_ANYXML: |
| 453 | case LYS_ANYDATA: |
Michal Vasko | 8f359bf | 2020-07-28 10:41:15 +0200 | [diff] [blame] | 454 | if (lyd_compare_single(first, second, 0)) { |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 455 | /* different values */ |
| 456 | *op = LYD_DIFF_OP_REPLACE; |
Michal Vasko | 3a41dff | 2020-07-15 14:30:28 +0200 | [diff] [blame] | 457 | } else if ((options & LYD_DIFF_DEFAULTS) && ((first->flags & LYD_DEFAULT) != (second->flags & LYD_DEFAULT))) { |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 458 | /* default flag change */ |
| 459 | *op = LYD_DIFF_OP_NONE; |
| 460 | } else { |
| 461 | /* no changes */ |
| 462 | return LY_ENOT; |
| 463 | } |
| 464 | break; |
| 465 | default: |
| 466 | LOGINT_RET(schema->module->ctx); |
| 467 | } |
| 468 | } |
| 469 | |
| 470 | /* |
| 471 | * set each attribute correctly based on the operation and node type |
| 472 | */ |
| 473 | |
| 474 | /* orig-default */ |
Michal Vasko | 4b715ca | 2020-11-11 18:39:57 +0100 | [diff] [blame] | 475 | if ((schema->nodetype & LYD_NODE_TERM) && ((*op == LYD_DIFF_OP_REPLACE) || (*op == LYD_DIFF_OP_NONE))) { |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 476 | if (first->flags & LYD_DEFAULT) { |
| 477 | *orig_default = "true"; |
| 478 | } else { |
| 479 | *orig_default = "false"; |
| 480 | } |
| 481 | } |
| 482 | |
| 483 | /* orig-value */ |
| 484 | if ((schema->nodetype == LYS_LEAF) && (*op == LYD_DIFF_OP_REPLACE)) { |
| 485 | /* leaf */ |
Michal Vasko | b7be7a8 | 2020-08-20 09:09:04 +0200 | [diff] [blame] | 486 | *orig_value = strdup(LYD_CANON_VALUE(first)); |
Michal Vasko | ba99a3e | 2020-08-18 15:50:05 +0200 | [diff] [blame] | 487 | LY_CHECK_ERR_RET(!*orig_value, LOGMEM(schema->module->ctx), LY_EMEM); |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 488 | } |
| 489 | |
| 490 | return LY_SUCCESS; |
| 491 | } |
| 492 | |
| 493 | /** |
| 494 | * @brief Perform diff for all siblings at certain depth, recursively. |
| 495 | * |
| 496 | * For user-ordered lists/leaf-lists a specific structure is used for storing |
| 497 | * the current order. The idea is to apply all the generated diff changes |
| 498 | * virtually on the first tree so that we can continue to generate correct |
| 499 | * changes after some were already generated. |
| 500 | * |
| 501 | * The algorithm then uses second tree position-based changes with a before |
| 502 | * (preceding) item anchor. |
| 503 | * |
| 504 | * Example: |
| 505 | * |
| 506 | * Virtual first tree leaf-list order: |
| 507 | * 1 2 [3] 4 5 |
| 508 | * |
| 509 | * Second tree leaf-list order: |
| 510 | * 1 2 [5] 3 4 |
| 511 | * |
| 512 | * We are at the 3rd node now. We look at whether the nodes on the 3rd position |
| 513 | * match - they do not - move nodes so that the 3rd position node is final -> |
| 514 | * -> move node 5 to the 3rd position -> move node 5 after node 2. |
| 515 | * |
| 516 | * Required properties: |
| 517 | * Stored operations (move) should not be affected by later operations - |
| 518 | * - would cause a redundantly long list of operations, possibly inifinite. |
| 519 | * |
| 520 | * Implemenation justification: |
| 521 | * First, all delete operations and only then move/create operations are stored. |
| 522 | * Also, preceding anchor is used and after each iteration another node is |
| 523 | * at its final position. That results in the invariant that all preceding |
| 524 | * nodes are final and will not be changed by the later operations, meaning |
| 525 | * they can safely be used as anchors for the later operations. |
| 526 | * |
| 527 | * @param[in] first First tree first sibling. |
| 528 | * @param[in] second Second tree first sibling. |
| 529 | * @param[in] options Diff options. |
Michal Vasko | 3a41dff | 2020-07-15 14:30:28 +0200 | [diff] [blame] | 530 | * @param[in] nosiblings Whether to skip following siblings. |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 531 | * @param[in,out] diff Diff to append to. |
| 532 | * @return LY_ERR value. |
| 533 | */ |
| 534 | static LY_ERR |
Radek Krejci | 857189e | 2020-09-01 13:26:36 +0200 | [diff] [blame] | 535 | lyd_diff_siblings_r(const struct lyd_node *first, const struct lyd_node *second, uint16_t options, ly_bool nosiblings, |
Radek Krejci | 0f96988 | 2020-08-21 16:56:47 +0200 | [diff] [blame] | 536 | struct lyd_node **diff) |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 537 | { |
| 538 | LY_ERR ret = LY_SUCCESS; |
| 539 | const struct lyd_node *iter_first, *iter_second; |
| 540 | struct lyd_node *match_second, *match_first; |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 541 | struct lyd_diff_userord *userord = NULL; |
| 542 | LY_ARRAY_COUNT_TYPE u; |
| 543 | enum lyd_diff_op op; |
| 544 | const char *orig_default; |
| 545 | char *orig_value, *key, *value, *orig_key; |
| 546 | |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 547 | /* compare first tree to the second tree - delete, replace, none */ |
| 548 | LY_LIST_FOR(first, iter_first) { |
| 549 | assert(!(iter_first->schema->flags & LYS_KEY)); |
Michal Vasko | 3a41dff | 2020-07-15 14:30:28 +0200 | [diff] [blame] | 550 | if ((iter_first->flags & LYD_DEFAULT) && !(options & LYD_DIFF_DEFAULTS)) { |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 551 | /* skip default nodes */ |
| 552 | continue; |
| 553 | } |
| 554 | |
| 555 | if (iter_first->schema->nodetype & (LYS_LIST | LYS_LEAFLIST)) { |
| 556 | /* try to find the exact instance */ |
| 557 | lyd_find_sibling_first(second, iter_first, &match_second); |
| 558 | } else { |
| 559 | /* try to simply find the node, there cannot be more instances */ |
| 560 | lyd_find_sibling_val(second, iter_first->schema, NULL, 0, &match_second); |
| 561 | } |
| 562 | |
Michal Vasko | 3a41dff | 2020-07-15 14:30:28 +0200 | [diff] [blame] | 563 | if (match_second && (match_second->flags & LYD_DEFAULT) && !(options & LYD_DIFF_DEFAULTS)) { |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 564 | /* ignore default nodes */ |
| 565 | match_second = NULL; |
| 566 | } |
| 567 | |
| 568 | if (lysc_is_userordered(iter_first->schema)) { |
| 569 | if (match_second) { |
| 570 | /* we are handling only user-ordered node delete now */ |
| 571 | continue; |
| 572 | } |
| 573 | |
| 574 | /* get all the attributes */ |
| 575 | LY_CHECK_GOTO(lyd_diff_userord_attrs(iter_first, match_second, options, &userord, &op, &orig_default, |
Michal Vasko | 6973015 | 2020-10-09 16:30:07 +0200 | [diff] [blame] | 576 | &value, &orig_value, &key, &orig_key), cleanup); |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 577 | |
| 578 | /* there must be changes, it is deleted */ |
| 579 | assert(op == LYD_DIFF_OP_DELETE); |
| 580 | ret = lyd_diff_add(iter_first, op, orig_default, orig_value, key, value, orig_key, diff); |
| 581 | |
| 582 | free(orig_value); |
| 583 | free(key); |
| 584 | free(value); |
| 585 | free(orig_key); |
| 586 | LY_CHECK_GOTO(ret, cleanup); |
| 587 | } else { |
| 588 | /* get all the attributes */ |
| 589 | ret = lyd_diff_attrs(iter_first, match_second, options, &op, &orig_default, &orig_value); |
| 590 | |
| 591 | /* add into diff if there are any changes */ |
| 592 | if (!ret) { |
| 593 | if (op == LYD_DIFF_OP_DELETE) { |
| 594 | ret = lyd_diff_add(iter_first, op, orig_default, orig_value, NULL, NULL, NULL, diff); |
| 595 | } else { |
Michal Vasko | 3c2dd6c | 2020-11-06 17:38:55 +0100 | [diff] [blame] | 596 | assert(match_second); |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 597 | ret = lyd_diff_add(match_second, op, orig_default, orig_value, NULL, NULL, NULL, diff); |
| 598 | } |
| 599 | |
| 600 | free(orig_value); |
| 601 | LY_CHECK_GOTO(ret, cleanup); |
| 602 | } else if (ret == LY_ENOT) { |
| 603 | ret = LY_SUCCESS; |
| 604 | } else { |
| 605 | goto cleanup; |
| 606 | } |
| 607 | } |
| 608 | |
| 609 | /* check descendants, if any, recursively */ |
| 610 | if (match_second) { |
Radek Krejci | a1c1e54 | 2020-09-29 16:06:52 +0200 | [diff] [blame] | 611 | LY_CHECK_GOTO(lyd_diff_siblings_r(lyd_child_no_keys(iter_first), lyd_child_no_keys(match_second), options, |
Michal Vasko | 6973015 | 2020-10-09 16:30:07 +0200 | [diff] [blame] | 612 | 0, diff), cleanup); |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 613 | } |
| 614 | |
| 615 | if (nosiblings) { |
| 616 | break; |
| 617 | } |
| 618 | } |
| 619 | |
| 620 | /* reset all cached positions */ |
| 621 | LY_ARRAY_FOR(userord, u) { |
| 622 | userord[u].pos = 0; |
| 623 | } |
| 624 | |
| 625 | /* compare second tree to the first tree - create, user-ordered move */ |
| 626 | LY_LIST_FOR(second, iter_second) { |
| 627 | assert(!(iter_second->schema->flags & LYS_KEY)); |
Michal Vasko | 3a41dff | 2020-07-15 14:30:28 +0200 | [diff] [blame] | 628 | if ((iter_second->flags & LYD_DEFAULT) && !(options & LYD_DIFF_DEFAULTS)) { |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 629 | /* skip default nodes */ |
| 630 | continue; |
| 631 | } |
| 632 | |
| 633 | if (iter_second->schema->nodetype & (LYS_LIST | LYS_LEAFLIST)) { |
| 634 | lyd_find_sibling_first(first, iter_second, &match_first); |
| 635 | } else { |
| 636 | lyd_find_sibling_val(first, iter_second->schema, NULL, 0, &match_first); |
| 637 | } |
| 638 | |
Michal Vasko | 3a41dff | 2020-07-15 14:30:28 +0200 | [diff] [blame] | 639 | if (match_first && (match_first->flags & LYD_DEFAULT) && !(options & LYD_DIFF_DEFAULTS)) { |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 640 | /* ignore default nodes */ |
| 641 | match_first = NULL; |
| 642 | } |
| 643 | |
| 644 | if (lysc_is_userordered(iter_second->schema)) { |
| 645 | /* get all the attributes */ |
| 646 | ret = lyd_diff_userord_attrs(match_first, iter_second, options, &userord, &op, &orig_default, |
Michal Vasko | 6973015 | 2020-10-09 16:30:07 +0200 | [diff] [blame] | 647 | &value, &orig_value, &key, &orig_key); |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 648 | |
| 649 | /* add into diff if there are any changes */ |
| 650 | if (!ret) { |
| 651 | ret = lyd_diff_add(iter_second, op, orig_default, orig_value, key, value, orig_key, diff); |
| 652 | |
| 653 | free(orig_value); |
| 654 | free(key); |
| 655 | free(value); |
| 656 | free(orig_key); |
| 657 | LY_CHECK_GOTO(ret, cleanup); |
| 658 | } else if (ret == LY_ENOT) { |
| 659 | ret = LY_SUCCESS; |
| 660 | } else { |
| 661 | goto cleanup; |
| 662 | } |
| 663 | } else if (!match_first) { |
| 664 | /* get all the attributes */ |
| 665 | LY_CHECK_GOTO(lyd_diff_attrs(match_first, iter_second, options, &op, &orig_default, &orig_value), cleanup); |
| 666 | |
| 667 | /* there must be changes, it is created */ |
| 668 | assert(op == LYD_DIFF_OP_CREATE); |
| 669 | ret = lyd_diff_add(iter_second, op, orig_default, orig_value, NULL, NULL, NULL, diff); |
| 670 | |
| 671 | free(orig_value); |
| 672 | LY_CHECK_GOTO(ret, cleanup); |
| 673 | } /* else was handled */ |
| 674 | |
| 675 | if (nosiblings) { |
| 676 | break; |
| 677 | } |
| 678 | } |
| 679 | |
| 680 | cleanup: |
| 681 | LY_ARRAY_FOR(userord, u) { |
| 682 | LY_ARRAY_FREE(userord[u].inst); |
| 683 | } |
| 684 | LY_ARRAY_FREE(userord); |
| 685 | return ret; |
| 686 | } |
| 687 | |
Michal Vasko | 3a41dff | 2020-07-15 14:30:28 +0200 | [diff] [blame] | 688 | static LY_ERR |
Radek Krejci | 857189e | 2020-09-01 13:26:36 +0200 | [diff] [blame] | 689 | lyd_diff(const struct lyd_node *first, const struct lyd_node *second, uint16_t options, ly_bool nosiblings, struct lyd_node **diff) |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 690 | { |
| 691 | const struct ly_ctx *ctx; |
| 692 | |
| 693 | LY_CHECK_ARG_RET(NULL, diff, LY_EINVAL); |
| 694 | |
| 695 | if (first) { |
Michal Vasko | b7be7a8 | 2020-08-20 09:09:04 +0200 | [diff] [blame] | 696 | ctx = LYD_CTX(first); |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 697 | } else if (second) { |
Michal Vasko | b7be7a8 | 2020-08-20 09:09:04 +0200 | [diff] [blame] | 698 | ctx = LYD_CTX(second); |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 699 | } else { |
| 700 | ctx = NULL; |
| 701 | } |
| 702 | |
| 703 | if (first && second && (lysc_data_parent(first->schema) != lysc_data_parent(second->schema))) { |
| 704 | LOGERR(ctx, LY_EINVAL, "Invalid arguments - cannot create diff for unrelated data (%s()).", __func__); |
| 705 | return LY_EINVAL; |
| 706 | } |
| 707 | |
| 708 | *diff = NULL; |
| 709 | |
Michal Vasko | 3a41dff | 2020-07-15 14:30:28 +0200 | [diff] [blame] | 710 | return lyd_diff_siblings_r(first, second, options, nosiblings, diff); |
| 711 | } |
| 712 | |
| 713 | API LY_ERR |
Radek Krejci | 1deb5be | 2020-08-26 16:43:36 +0200 | [diff] [blame] | 714 | lyd_diff_tree(const struct lyd_node *first, const struct lyd_node *second, uint16_t options, struct lyd_node **diff) |
Michal Vasko | 3a41dff | 2020-07-15 14:30:28 +0200 | [diff] [blame] | 715 | { |
| 716 | return lyd_diff(first, second, options, 1, diff); |
| 717 | } |
| 718 | |
| 719 | API LY_ERR |
Radek Krejci | 1deb5be | 2020-08-26 16:43:36 +0200 | [diff] [blame] | 720 | lyd_diff_siblings(const struct lyd_node *first, const struct lyd_node *second, uint16_t options, struct lyd_node **diff) |
Michal Vasko | 3a41dff | 2020-07-15 14:30:28 +0200 | [diff] [blame] | 721 | { |
| 722 | return lyd_diff(first, second, options, 0, diff); |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 723 | } |
| 724 | |
| 725 | /** |
| 726 | * @brief Find a matching node in data tree for a diff node. |
| 727 | * |
| 728 | * @param[in] first_node First sibling in the data tree. |
| 729 | * @param[in] diff_node Diff node to match. |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 730 | * @param[out] match_p Matching node, NULL if no found. |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 731 | */ |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 732 | static void |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 733 | lyd_diff_find_node(const struct lyd_node *first_node, const struct lyd_node *diff_node, struct lyd_node **match_p) |
| 734 | { |
| 735 | if (diff_node->schema->nodetype & (LYS_LIST | LYS_LEAFLIST)) { |
| 736 | /* try to find the exact instance */ |
| 737 | lyd_find_sibling_first(first_node, diff_node, match_p); |
| 738 | } else { |
| 739 | /* try to simply find the node, there cannot be more instances */ |
| 740 | lyd_find_sibling_val(first_node, diff_node->schema, NULL, 0, match_p); |
| 741 | } |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 742 | } |
| 743 | |
| 744 | /** |
| 745 | * @brief Learn operation of a diff node. |
| 746 | * |
| 747 | * @param[in] diff_node Diff node. |
| 748 | * @param[out] op Operation. |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 749 | * @return LY_ERR value. |
| 750 | */ |
| 751 | static LY_ERR |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 752 | lyd_diff_get_op(const struct lyd_node *diff_node, enum lyd_diff_op *op) |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 753 | { |
| 754 | struct lyd_meta *meta = NULL; |
| 755 | const struct lyd_node *diff_parent; |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 756 | const char *str; |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 757 | |
| 758 | for (diff_parent = diff_node; diff_parent; diff_parent = (struct lyd_node *)diff_parent->parent) { |
| 759 | LY_LIST_FOR(diff_parent->meta, meta) { |
| 760 | if (!strcmp(meta->name, "operation") && !strcmp(meta->annotation->module->name, "yang")) { |
Michal Vasko | ba99a3e | 2020-08-18 15:50:05 +0200 | [diff] [blame] | 761 | str = meta->value.canonical; |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 762 | if ((str[0] == 'r') && (diff_parent != diff_node)) { |
| 763 | /* we do not care about this operation if it's in our parent */ |
| 764 | continue; |
| 765 | } |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 766 | *op = lyd_diff_str2op(str); |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 767 | break; |
| 768 | } |
| 769 | } |
| 770 | if (meta) { |
| 771 | break; |
| 772 | } |
| 773 | } |
Michal Vasko | b7be7a8 | 2020-08-20 09:09:04 +0200 | [diff] [blame] | 774 | LY_CHECK_ERR_RET(!meta, LOGINT(LYD_CTX(diff_node)), LY_EINT); |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 775 | |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 776 | return LY_SUCCESS; |
| 777 | } |
| 778 | |
| 779 | /** |
| 780 | * @brief Insert a diff node into a data tree. |
| 781 | * |
| 782 | * @param[in,out] first_node First sibling of the data tree. |
| 783 | * @param[in] parent_node Data tree sibling parent node. |
| 784 | * @param[in] new_node Node to insert. |
| 785 | * @param[in] keys_or_value Optional predicate of relative (leaf-)list instance. If not set, the user-ordered |
| 786 | * instance will be inserted at the first position. |
| 787 | * @return err_info, NULL on success. |
| 788 | */ |
| 789 | static LY_ERR |
| 790 | lyd_diff_insert(struct lyd_node **first_node, struct lyd_node *parent_node, struct lyd_node *new_node, |
Radek Krejci | 0f96988 | 2020-08-21 16:56:47 +0200 | [diff] [blame] | 791 | const char *key_or_value) |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 792 | { |
| 793 | LY_ERR ret; |
| 794 | struct lyd_node *anchor; |
| 795 | |
| 796 | assert(new_node); |
| 797 | |
| 798 | if (!*first_node) { |
| 799 | if (!parent_node) { |
| 800 | /* no parent or siblings */ |
| 801 | *first_node = new_node; |
| 802 | return LY_SUCCESS; |
| 803 | } |
| 804 | |
| 805 | /* simply insert into parent, no other children */ |
| 806 | if (key_or_value) { |
Michal Vasko | b7be7a8 | 2020-08-20 09:09:04 +0200 | [diff] [blame] | 807 | LOGERR(LYD_CTX(new_node), LY_EINVAL, "Node \"%s\" instance to insert next to not found.", |
Michal Vasko | 6973015 | 2020-10-09 16:30:07 +0200 | [diff] [blame] | 808 | new_node->schema->name); |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 809 | return LY_EINVAL; |
| 810 | } |
Michal Vasko | b104f11 | 2020-07-17 09:54:54 +0200 | [diff] [blame] | 811 | return lyd_insert_child(parent_node, new_node); |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 812 | } |
| 813 | |
| 814 | assert(!(*first_node)->parent || ((struct lyd_node *)(*first_node)->parent == parent_node)); |
| 815 | |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 816 | if (!lysc_is_userordered(new_node->schema)) { |
Michal Vasko | b104f11 | 2020-07-17 09:54:54 +0200 | [diff] [blame] | 817 | /* simple insert */ |
| 818 | return lyd_insert_sibling(*first_node, new_node, first_node); |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 819 | } |
| 820 | |
| 821 | if (key_or_value) { |
| 822 | /* find the anchor sibling */ |
| 823 | ret = lyd_find_sibling_val(*first_node, new_node->schema, key_or_value, 0, &anchor); |
| 824 | if (ret == LY_ENOTFOUND) { |
Michal Vasko | b7be7a8 | 2020-08-20 09:09:04 +0200 | [diff] [blame] | 825 | LOGERR(LYD_CTX(new_node), LY_EINVAL, "Node \"%s\" instance to insert next to not found.", |
Michal Vasko | 6973015 | 2020-10-09 16:30:07 +0200 | [diff] [blame] | 826 | new_node->schema->name); |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 827 | return LY_EINVAL; |
| 828 | } else if (ret) { |
| 829 | return ret; |
| 830 | } |
| 831 | |
| 832 | /* insert after */ |
| 833 | LY_CHECK_RET(lyd_insert_after(anchor, new_node)); |
| 834 | assert(new_node->prev == anchor); |
| 835 | if (*first_node == new_node) { |
| 836 | *first_node = anchor; |
| 837 | } |
| 838 | } else { |
| 839 | if ((*first_node)->schema->flags & LYS_KEY) { |
| 840 | assert(parent_node && (parent_node->schema->nodetype == LYS_LIST)); |
| 841 | |
| 842 | /* find last key */ |
| 843 | anchor = *first_node; |
| 844 | while (anchor->next && (anchor->next->schema->flags & LYS_KEY)) { |
| 845 | anchor = anchor->next; |
| 846 | } |
| 847 | /* insert after the last key */ |
| 848 | LY_CHECK_RET(lyd_insert_after(anchor, new_node)); |
| 849 | } else { |
| 850 | /* insert at the beginning */ |
| 851 | LY_CHECK_RET(lyd_insert_before(*first_node, new_node)); |
| 852 | *first_node = new_node; |
| 853 | } |
| 854 | } |
| 855 | |
| 856 | return LY_SUCCESS; |
| 857 | } |
| 858 | |
| 859 | /** |
| 860 | * @brief Apply diff subtree on data tree nodes, recursively. |
| 861 | * |
| 862 | * @param[in,out] first_node First sibling of the data tree. |
| 863 | * @param[in] parent_node Parent of the first sibling. |
| 864 | * @param[in] diff_node Current diff node. |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 865 | * @param[in] diff_cb Optional diff callback. |
| 866 | * @param[in] cb_data User data for @p diff_cb. |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 867 | * @return LY_ERR value. |
| 868 | */ |
| 869 | static LY_ERR |
| 870 | lyd_diff_apply_r(struct lyd_node **first_node, struct lyd_node *parent_node, const struct lyd_node *diff_node, |
Radek Krejci | 0f96988 | 2020-08-21 16:56:47 +0200 | [diff] [blame] | 871 | lyd_diff_cb diff_cb, void *cb_data) |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 872 | { |
| 873 | LY_ERR ret; |
| 874 | struct lyd_node *match, *diff_child; |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 875 | const char *str_val; |
| 876 | enum lyd_diff_op op; |
| 877 | struct lyd_meta *meta; |
Michal Vasko | b7be7a8 | 2020-08-20 09:09:04 +0200 | [diff] [blame] | 878 | const struct ly_ctx *ctx = LYD_CTX(diff_node); |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 879 | |
| 880 | /* read all the valid attributes */ |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 881 | LY_CHECK_RET(lyd_diff_get_op(diff_node, &op)); |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 882 | |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 883 | /* handle specific user-ordered (leaf-)lists operations separately */ |
| 884 | if (lysc_is_userordered(diff_node->schema) && ((op == LYD_DIFF_OP_CREATE) || (op == LYD_DIFF_OP_REPLACE))) { |
| 885 | if (op == LYD_DIFF_OP_REPLACE) { |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 886 | /* find the node (we must have some siblings because the node was only moved) */ |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 887 | lyd_diff_find_node(*first_node, diff_node, &match); |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 888 | } else { |
Michal Vasko | 3a41dff | 2020-07-15 14:30:28 +0200 | [diff] [blame] | 889 | /* duplicate the node */ |
| 890 | LY_CHECK_RET(lyd_dup_single(diff_node, NULL, LYD_DUP_NO_META, &match)); |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 891 | } |
| 892 | |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 893 | /* get "key" or "value" metadata string value */ |
| 894 | meta = lyd_find_meta(diff_node->meta, NULL, diff_node->schema->nodetype == LYS_LIST ? "yang:key" : "yang:value"); |
Michal Vasko | b7be7a8 | 2020-08-20 09:09:04 +0200 | [diff] [blame] | 895 | LY_CHECK_ERR_RET(!meta, LOGINT(LYD_CTX(diff_node)), LY_EINT); |
Michal Vasko | ba99a3e | 2020-08-18 15:50:05 +0200 | [diff] [blame] | 896 | str_val = meta->value.canonical; |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 897 | |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 898 | /* insert/move the node */ |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 899 | if (str_val[0]) { |
| 900 | ret = lyd_diff_insert(first_node, parent_node, match, str_val); |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 901 | } else { |
| 902 | ret = lyd_diff_insert(first_node, parent_node, match, NULL); |
| 903 | } |
| 904 | if (ret) { |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 905 | if (op == LYD_DIFF_OP_CREATE) { |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 906 | lyd_free_tree(match); |
| 907 | } |
| 908 | return ret; |
| 909 | } |
| 910 | |
| 911 | goto next_iter_r; |
| 912 | } |
| 913 | |
| 914 | /* apply operation */ |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 915 | switch (op) { |
| 916 | case LYD_DIFF_OP_NONE: |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 917 | /* find the node */ |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 918 | lyd_diff_find_node(*first_node, diff_node, &match); |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 919 | |
| 920 | if (match->schema->nodetype & LYD_NODE_TERM) { |
| 921 | /* special case of only dflt flag change */ |
| 922 | if (diff_node->flags & LYD_DEFAULT) { |
| 923 | match->flags |= LYD_DEFAULT; |
| 924 | } else { |
| 925 | match->flags &= ~LYD_DEFAULT; |
| 926 | } |
| 927 | } else { |
| 928 | /* none operation on nodes without children is redundant and hence forbidden */ |
Radek Krejci | a1c1e54 | 2020-09-29 16:06:52 +0200 | [diff] [blame] | 929 | if (!lyd_child_no_keys(diff_node)) { |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 930 | LOGINT_RET(ctx); |
| 931 | } |
| 932 | } |
| 933 | break; |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 934 | case LYD_DIFF_OP_CREATE: |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 935 | /* duplicate the node */ |
Michal Vasko | 3a41dff | 2020-07-15 14:30:28 +0200 | [diff] [blame] | 936 | LY_CHECK_RET(lyd_dup_single(diff_node, NULL, LYD_DUP_NO_META, &match)); |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 937 | |
| 938 | /* insert it at the end */ |
| 939 | ret = 0; |
Michal Vasko | b104f11 | 2020-07-17 09:54:54 +0200 | [diff] [blame] | 940 | if (parent_node) { |
| 941 | ret = lyd_insert_child(parent_node, match); |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 942 | } else { |
Michal Vasko | b104f11 | 2020-07-17 09:54:54 +0200 | [diff] [blame] | 943 | ret = lyd_insert_sibling(*first_node, match, first_node); |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 944 | } |
| 945 | if (ret) { |
| 946 | lyd_free_tree(match); |
| 947 | return ret; |
| 948 | } |
| 949 | |
| 950 | break; |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 951 | case LYD_DIFF_OP_DELETE: |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 952 | /* find the node */ |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 953 | lyd_diff_find_node(*first_node, diff_node, &match); |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 954 | |
| 955 | /* remove it */ |
| 956 | if ((match == *first_node) && !match->parent) { |
| 957 | assert(!parent_node); |
| 958 | /* we have removed the top-level node */ |
| 959 | *first_node = (*first_node)->next; |
| 960 | } |
| 961 | lyd_free_tree(match); |
| 962 | |
| 963 | /* we are not going recursively in this case, the whole subtree was already deleted */ |
| 964 | return LY_SUCCESS; |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 965 | case LYD_DIFF_OP_REPLACE: |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 966 | LY_CHECK_ERR_RET(diff_node->schema->nodetype != LYS_LEAF, LOGINT(ctx), LY_EINT); |
| 967 | |
| 968 | /* find the node */ |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 969 | lyd_diff_find_node(*first_node, diff_node, &match); |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 970 | |
| 971 | /* update its value */ |
Michal Vasko | b7be7a8 | 2020-08-20 09:09:04 +0200 | [diff] [blame] | 972 | ret = lyd_change_term(match, LYD_CANON_VALUE(diff_node)); |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 973 | if (ret && (ret != LY_EEXIST)) { |
| 974 | LOGINT_RET(ctx); |
| 975 | } |
| 976 | |
| 977 | /* with flags */ |
| 978 | match->flags = diff_node->flags; |
| 979 | break; |
| 980 | default: |
| 981 | LOGINT_RET(ctx); |
| 982 | } |
| 983 | |
| 984 | next_iter_r: |
| 985 | if (diff_cb) { |
| 986 | /* call callback */ |
| 987 | LY_CHECK_RET(diff_cb(diff_node, match, cb_data)); |
| 988 | } |
| 989 | |
| 990 | /* apply diff recursively */ |
Radek Krejci | a1c1e54 | 2020-09-29 16:06:52 +0200 | [diff] [blame] | 991 | LY_LIST_FOR(lyd_child_no_keys(diff_node), diff_child) { |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 992 | LY_CHECK_RET(lyd_diff_apply_r(lyd_node_children_p(match), match, diff_child, diff_cb, cb_data)); |
| 993 | } |
| 994 | |
| 995 | return LY_SUCCESS; |
| 996 | } |
| 997 | |
| 998 | API LY_ERR |
| 999 | lyd_diff_apply_module(struct lyd_node **data, const struct lyd_node *diff, const struct lys_module *mod, |
Radek Krejci | 0f96988 | 2020-08-21 16:56:47 +0200 | [diff] [blame] | 1000 | lyd_diff_cb diff_cb, void *cb_data) |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 1001 | { |
| 1002 | const struct lyd_node *root; |
| 1003 | |
| 1004 | LY_LIST_FOR(diff, root) { |
| 1005 | if (mod && (lyd_owner_module(root) != mod)) { |
| 1006 | /* skip data nodes from different modules */ |
| 1007 | continue; |
| 1008 | } |
| 1009 | |
| 1010 | /* apply relevant nodes from the diff datatree */ |
| 1011 | LY_CHECK_RET(lyd_diff_apply_r(data, NULL, root, diff_cb, cb_data)); |
| 1012 | } |
| 1013 | |
| 1014 | return LY_SUCCESS; |
| 1015 | } |
| 1016 | |
| 1017 | API LY_ERR |
Michal Vasko | 3a41dff | 2020-07-15 14:30:28 +0200 | [diff] [blame] | 1018 | lyd_diff_apply_all(struct lyd_node **data, const struct lyd_node *diff) |
Michal Vasko | d59035b | 2020-07-08 12:00:06 +0200 | [diff] [blame] | 1019 | { |
| 1020 | return lyd_diff_apply_module(data, diff, NULL, NULL, NULL); |
| 1021 | } |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 1022 | |
| 1023 | /** |
| 1024 | * @brief Update operations on a diff node when the new operation is NONE. |
| 1025 | * |
| 1026 | * @param[in] diff_match Node from the diff. |
| 1027 | * @param[in] cur_op Current operation of the diff node. |
| 1028 | * @param[in] src_diff Current source diff node. |
| 1029 | * @return LY_ERR value. |
| 1030 | */ |
| 1031 | static LY_ERR |
| 1032 | lyd_diff_merge_none(struct lyd_node *diff_match, enum lyd_diff_op cur_op, const struct lyd_node *src_diff) |
| 1033 | { |
| 1034 | switch (cur_op) { |
| 1035 | case LYD_DIFF_OP_NONE: |
| 1036 | case LYD_DIFF_OP_CREATE: |
| 1037 | case LYD_DIFF_OP_REPLACE: |
| 1038 | if (src_diff->schema->nodetype & LYD_NODE_TERM) { |
| 1039 | /* NONE on a term means only its dflt flag was changed */ |
| 1040 | diff_match->flags &= ~LYD_DEFAULT; |
| 1041 | diff_match->flags |= src_diff->flags & LYD_DEFAULT; |
| 1042 | } |
| 1043 | break; |
| 1044 | default: |
| 1045 | /* delete operation is not valid */ |
Michal Vasko | b7be7a8 | 2020-08-20 09:09:04 +0200 | [diff] [blame] | 1046 | LOGINT_RET(LYD_CTX(src_diff)); |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 1047 | } |
| 1048 | |
| 1049 | return LY_SUCCESS; |
| 1050 | } |
| 1051 | |
| 1052 | /** |
| 1053 | * @brief Remove an attribute from a node. |
| 1054 | * |
| 1055 | * @param[in] node Node with the metadata. |
| 1056 | * @param[in] name Metadata name. |
| 1057 | */ |
| 1058 | static void |
| 1059 | lyd_diff_del_meta(struct lyd_node *node, const char *name) |
| 1060 | { |
| 1061 | struct lyd_meta *meta; |
| 1062 | |
| 1063 | LY_LIST_FOR(node->meta, meta) { |
| 1064 | if (!strcmp(meta->name, name) && !strcmp(meta->annotation->module->name, "yang")) { |
Michal Vasko | 3a41dff | 2020-07-15 14:30:28 +0200 | [diff] [blame] | 1065 | lyd_free_meta_single(meta); |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 1066 | return; |
| 1067 | } |
| 1068 | } |
| 1069 | |
| 1070 | assert(0); |
| 1071 | } |
| 1072 | |
| 1073 | /** |
| 1074 | * @brief Set a specific operation of a node. Delete the previous operation, if any. |
Michal Vasko | 871a025 | 2020-11-11 18:35:24 +0100 | [diff] [blame] | 1075 | * Does not change the default flag. |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 1076 | * |
| 1077 | * @param[in] node Node to change. |
| 1078 | * @param[in] op Operation to set. |
| 1079 | * @return LY_ERR value. |
| 1080 | */ |
| 1081 | static LY_ERR |
| 1082 | lyd_diff_change_op(struct lyd_node *node, enum lyd_diff_op op) |
| 1083 | { |
| 1084 | struct lyd_meta *meta; |
| 1085 | |
| 1086 | LY_LIST_FOR(node->meta, meta) { |
| 1087 | if (!strcmp(meta->name, "operation") && !strcmp(meta->annotation->module->name, "yang")) { |
Michal Vasko | 3a41dff | 2020-07-15 14:30:28 +0200 | [diff] [blame] | 1088 | lyd_free_meta_single(meta); |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 1089 | break; |
| 1090 | } |
| 1091 | } |
| 1092 | |
Michal Vasko | 871a025 | 2020-11-11 18:35:24 +0100 | [diff] [blame] | 1093 | return lyd_new_meta(LYD_CTX(node), node, NULL, "yang:operation", lyd_diff_op2str(op), 0, NULL); |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 1094 | } |
| 1095 | |
| 1096 | /** |
| 1097 | * @brief Update operations on a diff node when the new operation is REPLACE. |
| 1098 | * |
| 1099 | * @param[in] diff_match Node from the diff. |
| 1100 | * @param[in] cur_op Current operation of the diff node. |
| 1101 | * @param[in] src_diff Current source diff node. |
| 1102 | * @return LY_ERR value. |
| 1103 | */ |
| 1104 | static LY_ERR |
| 1105 | lyd_diff_merge_replace(struct lyd_node *diff_match, enum lyd_diff_op cur_op, const struct lyd_node *src_diff) |
| 1106 | { |
| 1107 | LY_ERR ret; |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 1108 | const char *str_val, *meta_name; |
| 1109 | struct lyd_meta *meta; |
| 1110 | const struct lys_module *mod; |
| 1111 | const struct lyd_node_any *any; |
| 1112 | |
| 1113 | /* get "yang" module for the metadata */ |
Michal Vasko | b7be7a8 | 2020-08-20 09:09:04 +0200 | [diff] [blame] | 1114 | mod = ly_ctx_get_module_latest(LYD_CTX(diff_match), "yang"); |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 1115 | assert(mod); |
| 1116 | |
| 1117 | switch (cur_op) { |
| 1118 | case LYD_DIFF_OP_REPLACE: |
| 1119 | case LYD_DIFF_OP_CREATE: |
| 1120 | switch (diff_match->schema->nodetype) { |
| 1121 | case LYS_LIST: |
| 1122 | case LYS_LEAFLIST: |
Michal Vasko | 4231fb6 | 2020-07-13 13:54:47 +0200 | [diff] [blame] | 1123 | /* it was created/moved somewhere, but now it will be created/moved somewhere else, |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 1124 | * keep orig_key/orig_value (only replace oper) and replace key/value */ |
| 1125 | assert(lysc_is_userordered(diff_match->schema)); |
| 1126 | meta_name = (diff_match->schema->nodetype == LYS_LIST ? "key" : "value"); |
| 1127 | |
| 1128 | lyd_diff_del_meta(diff_match, meta_name); |
| 1129 | meta = lyd_find_meta(src_diff->meta, mod, meta_name); |
Michal Vasko | b7be7a8 | 2020-08-20 09:09:04 +0200 | [diff] [blame] | 1130 | LY_CHECK_ERR_RET(!meta, LOGINT(LYD_CTX(src_diff)), LY_EINT); |
Michal Vasko | 3a41dff | 2020-07-15 14:30:28 +0200 | [diff] [blame] | 1131 | LY_CHECK_RET(lyd_dup_meta_single(meta, diff_match, NULL)); |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 1132 | break; |
| 1133 | case LYS_LEAF: |
| 1134 | /* replaced with the exact same value, impossible */ |
Michal Vasko | 8f359bf | 2020-07-28 10:41:15 +0200 | [diff] [blame] | 1135 | if (!lyd_compare_single(diff_match, src_diff, 0)) { |
Michal Vasko | b7be7a8 | 2020-08-20 09:09:04 +0200 | [diff] [blame] | 1136 | LOGINT_RET(LYD_CTX(src_diff)); |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 1137 | } |
| 1138 | |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 1139 | /* modify the node value */ |
Michal Vasko | b7be7a8 | 2020-08-20 09:09:04 +0200 | [diff] [blame] | 1140 | if (lyd_change_term(diff_match, LYD_CANON_VALUE(src_diff))) { |
| 1141 | LOGINT_RET(LYD_CTX(src_diff)); |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 1142 | } |
| 1143 | |
Michal Vasko | 8caadab | 2020-11-05 17:38:15 +0100 | [diff] [blame] | 1144 | if (cur_op == LYD_DIFF_OP_REPLACE) { |
| 1145 | /* compare values whether there is any change at all */ |
| 1146 | meta = lyd_find_meta(diff_match->meta, mod, "orig-value"); |
| 1147 | LY_CHECK_ERR_RET(!meta, LOGINT(LYD_CTX(diff_match)), LY_EINT); |
| 1148 | str_val = meta->value.canonical; |
| 1149 | ret = lyd_value_compare((struct lyd_node_term *)diff_match, str_val, strlen(str_val)); |
| 1150 | if (!ret) { |
| 1151 | /* values are the same, remove orig-value meta and set oper to NONE */ |
| 1152 | lyd_free_meta_single(meta); |
| 1153 | LY_CHECK_RET(lyd_diff_change_op(diff_match, LYD_DIFF_OP_NONE)); |
| 1154 | } |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 1155 | } |
| 1156 | |
| 1157 | /* modify the default flag */ |
| 1158 | diff_match->flags &= ~LYD_DEFAULT; |
| 1159 | diff_match->flags |= src_diff->flags & LYD_DEFAULT; |
| 1160 | break; |
| 1161 | case LYS_ANYXML: |
| 1162 | case LYS_ANYDATA: |
Michal Vasko | 8f359bf | 2020-07-28 10:41:15 +0200 | [diff] [blame] | 1163 | if (!lyd_compare_single(diff_match, src_diff, 0)) { |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 1164 | /* replaced with the exact same value, impossible */ |
Michal Vasko | b7be7a8 | 2020-08-20 09:09:04 +0200 | [diff] [blame] | 1165 | LOGINT_RET(LYD_CTX(src_diff)); |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 1166 | } |
| 1167 | |
| 1168 | /* modify the node value */ |
| 1169 | any = (struct lyd_node_any *)src_diff; |
| 1170 | LY_CHECK_RET(lyd_any_copy_value(diff_match, &any->value, any->value_type)); |
| 1171 | break; |
| 1172 | default: |
Michal Vasko | b7be7a8 | 2020-08-20 09:09:04 +0200 | [diff] [blame] | 1173 | LOGINT_RET(LYD_CTX(src_diff)); |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 1174 | } |
| 1175 | break; |
| 1176 | case LYD_DIFF_OP_NONE: |
| 1177 | /* it is moved now */ |
| 1178 | assert(lysc_is_userordered(diff_match->schema) && (diff_match->schema->nodetype == LYS_LIST)); |
| 1179 | |
| 1180 | /* change the operation */ |
| 1181 | LY_CHECK_RET(lyd_diff_change_op(diff_match, LYD_DIFF_OP_REPLACE)); |
| 1182 | |
| 1183 | /* set orig-key and key metadata */ |
| 1184 | meta = lyd_find_meta(src_diff->meta, mod, "orig-key"); |
Michal Vasko | b7be7a8 | 2020-08-20 09:09:04 +0200 | [diff] [blame] | 1185 | LY_CHECK_ERR_RET(!meta, LOGINT(LYD_CTX(src_diff)), LY_EINT); |
Michal Vasko | 3a41dff | 2020-07-15 14:30:28 +0200 | [diff] [blame] | 1186 | LY_CHECK_RET(lyd_dup_meta_single(meta, diff_match, NULL)); |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 1187 | |
| 1188 | meta = lyd_find_meta(src_diff->meta, mod, "key"); |
Michal Vasko | b7be7a8 | 2020-08-20 09:09:04 +0200 | [diff] [blame] | 1189 | LY_CHECK_ERR_RET(!meta, LOGINT(LYD_CTX(src_diff)), LY_EINT); |
Michal Vasko | 3a41dff | 2020-07-15 14:30:28 +0200 | [diff] [blame] | 1190 | LY_CHECK_RET(lyd_dup_meta_single(meta, diff_match, NULL)); |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 1191 | break; |
| 1192 | default: |
| 1193 | /* delete operation is not valid */ |
Michal Vasko | b7be7a8 | 2020-08-20 09:09:04 +0200 | [diff] [blame] | 1194 | LOGINT_RET(LYD_CTX(src_diff)); |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 1195 | } |
| 1196 | |
| 1197 | return LY_SUCCESS; |
| 1198 | } |
| 1199 | |
| 1200 | /** |
| 1201 | * @brief Update operations in a diff node when the new operation is CREATE. |
| 1202 | * |
| 1203 | * @param[in] diff_match Node from the diff. |
| 1204 | * @param[in] cur_op Current operation of the diff node. |
| 1205 | * @param[in] src_diff Current source diff node. |
Michal Vasko | c0e58e8 | 2020-11-11 19:04:33 +0100 | [diff] [blame] | 1206 | * @param[in] options Diff merge options. |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 1207 | * @return LY_ERR value. |
| 1208 | */ |
| 1209 | static LY_ERR |
Michal Vasko | c0e58e8 | 2020-11-11 19:04:33 +0100 | [diff] [blame] | 1210 | lyd_diff_merge_create(struct lyd_node *diff_match, enum lyd_diff_op cur_op, const struct lyd_node *src_diff, uint16_t options) |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 1211 | { |
| 1212 | struct lyd_node *child; |
Michal Vasko | c0e58e8 | 2020-11-11 19:04:33 +0100 | [diff] [blame] | 1213 | const struct lysc_node_leaf *sleaf = NULL; |
Michal Vasko | 871a025 | 2020-11-11 18:35:24 +0100 | [diff] [blame] | 1214 | uint32_t trg_flags; |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 1215 | |
| 1216 | switch (cur_op) { |
| 1217 | case LYD_DIFF_OP_DELETE: |
Michal Vasko | c0e58e8 | 2020-11-11 19:04:33 +0100 | [diff] [blame] | 1218 | if ((options & LYD_DIFF_MERGE_DEFAULTS) && (diff_match->schema->nodetype == LYS_LEAF)) { |
| 1219 | /* we are dealing with a leaf and are handling default values specially (as explicit nodes) */ |
Michal Vasko | 5632e0d | 2020-07-31 14:13:37 +0200 | [diff] [blame] | 1220 | sleaf = (struct lysc_node_leaf *)diff_match->schema; |
Michal Vasko | 5632e0d | 2020-07-31 14:13:37 +0200 | [diff] [blame] | 1221 | } |
| 1222 | |
Michal Vasko | 871a025 | 2020-11-11 18:35:24 +0100 | [diff] [blame] | 1223 | /* remember current flags */ |
| 1224 | trg_flags = diff_match->flags; |
| 1225 | |
Michal Vasko | 6973015 | 2020-10-09 16:30:07 +0200 | [diff] [blame] | 1226 | if (sleaf && sleaf->dflt && |
| 1227 | !sleaf->dflt->realtype->plugin->compare(sleaf->dflt, &((struct lyd_node_term *)src_diff)->value)) { |
Michal Vasko | 5632e0d | 2020-07-31 14:13:37 +0200 | [diff] [blame] | 1228 | /* we deleted it, so a default value was in-use, and it matches the created value -> operation NONE */ |
| 1229 | LY_CHECK_RET(lyd_diff_change_op(diff_match, LYD_DIFF_OP_NONE)); |
Michal Vasko | 5632e0d | 2020-07-31 14:13:37 +0200 | [diff] [blame] | 1230 | } else if (!lyd_compare_single(diff_match, src_diff, 0)) { |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 1231 | /* deleted + created -> operation NONE */ |
| 1232 | LY_CHECK_RET(lyd_diff_change_op(diff_match, LYD_DIFF_OP_NONE)); |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 1233 | } else { |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 1234 | /* we deleted it, but it was created with a different value -> operation REPLACE */ |
| 1235 | LY_CHECK_RET(lyd_diff_change_op(diff_match, LYD_DIFF_OP_REPLACE)); |
| 1236 | |
| 1237 | /* current value is the previous one (meta) */ |
Michal Vasko | 871a025 | 2020-11-11 18:35:24 +0100 | [diff] [blame] | 1238 | LY_CHECK_RET(lyd_new_meta(LYD_CTX(src_diff), diff_match, NULL, "yang:orig-value", |
| 1239 | LYD_CANON_VALUE(diff_match), 0, NULL)); |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 1240 | |
| 1241 | /* update the value itself */ |
Michal Vasko | b7be7a8 | 2020-08-20 09:09:04 +0200 | [diff] [blame] | 1242 | LY_CHECK_RET(lyd_change_term(diff_match, LYD_CANON_VALUE(src_diff))); |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 1243 | } |
| 1244 | |
| 1245 | if (diff_match->schema->nodetype & LYD_NODE_TERM) { |
Michal Vasko | 4b715ca | 2020-11-11 18:39:57 +0100 | [diff] [blame] | 1246 | /* add orig-dflt metadata */ |
| 1247 | LY_CHECK_RET(lyd_new_meta(LYD_CTX(src_diff), diff_match, NULL, "yang:orig-default", |
| 1248 | trg_flags & LYD_DEFAULT ? "true" : "false", 0, NULL)); |
| 1249 | |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 1250 | /* update dflt flag itself */ |
| 1251 | diff_match->flags &= ~LYD_DEFAULT; |
| 1252 | diff_match->flags |= src_diff->flags & LYD_DEFAULT; |
| 1253 | } else { |
| 1254 | /* but the operation of its children should remain DELETE */ |
Radek Krejci | a1c1e54 | 2020-09-29 16:06:52 +0200 | [diff] [blame] | 1255 | LY_LIST_FOR(lyd_child_no_keys(diff_match), child) { |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 1256 | LY_CHECK_RET(lyd_diff_change_op(child, LYD_DIFF_OP_DELETE)); |
| 1257 | } |
| 1258 | } |
| 1259 | break; |
| 1260 | default: |
| 1261 | /* create and replace operations are not valid */ |
Michal Vasko | b7be7a8 | 2020-08-20 09:09:04 +0200 | [diff] [blame] | 1262 | LOGINT_RET(LYD_CTX(src_diff)); |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 1263 | } |
| 1264 | |
| 1265 | return LY_SUCCESS; |
| 1266 | } |
| 1267 | |
| 1268 | /** |
| 1269 | * @brief Update operations on a diff node when the new operation is DELETE. |
| 1270 | * |
| 1271 | * @param[in] diff_match Node from the diff. |
| 1272 | * @param[in] cur_op Current operation of the diff node. |
| 1273 | * @param[in] src_diff Current source diff node. |
| 1274 | * @return LY_ERR value. |
| 1275 | */ |
| 1276 | static LY_ERR |
| 1277 | lyd_diff_merge_delete(struct lyd_node *diff_match, enum lyd_diff_op cur_op, const struct lyd_node *src_diff) |
| 1278 | { |
| 1279 | struct lyd_node *next, *child; |
| 1280 | |
| 1281 | /* we can delete only exact existing nodes */ |
Michal Vasko | b7be7a8 | 2020-08-20 09:09:04 +0200 | [diff] [blame] | 1282 | LY_CHECK_ERR_RET(lyd_compare_single(diff_match, src_diff, 0), LOGINT(LYD_CTX(src_diff)), LY_EINT); |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 1283 | |
| 1284 | switch (cur_op) { |
| 1285 | case LYD_DIFF_OP_CREATE: |
| 1286 | /* it was created, but then deleted -> set NONE operation */ |
| 1287 | LY_CHECK_RET(lyd_diff_change_op(diff_match, LYD_DIFF_OP_NONE)); |
| 1288 | |
| 1289 | if (diff_match->schema->nodetype & LYD_NODE_TERM) { |
| 1290 | /* add orig-default meta because it is expected */ |
Michal Vasko | 871a025 | 2020-11-11 18:35:24 +0100 | [diff] [blame] | 1291 | LY_CHECK_RET(lyd_new_meta(LYD_CTX(src_diff), diff_match, NULL, "yang:orig-default", |
| 1292 | diff_match->flags & LYD_DEFAULT ? "true" : "false", 0, NULL)); |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 1293 | } else { |
| 1294 | /* keep operation for all descendants (for now) */ |
Radek Krejci | a1c1e54 | 2020-09-29 16:06:52 +0200 | [diff] [blame] | 1295 | LY_LIST_FOR(lyd_child_no_keys(diff_match), child) { |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 1296 | LY_CHECK_RET(lyd_diff_change_op(child, cur_op)); |
| 1297 | } |
| 1298 | } |
| 1299 | break; |
| 1300 | case LYD_DIFF_OP_REPLACE: |
| 1301 | /* similar to none operation but also remove the redundant attribute */ |
| 1302 | lyd_diff_del_meta(diff_match, "orig-value"); |
Radek Krejci | f13b87b | 2020-12-01 22:02:17 +0100 | [diff] [blame^] | 1303 | /* fall through */ |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 1304 | case LYD_DIFF_OP_NONE: |
| 1305 | /* it was not modified, but should be deleted -> set DELETE operation */ |
| 1306 | LY_CHECK_RET(lyd_diff_change_op(diff_match, LYD_DIFF_OP_DELETE)); |
| 1307 | |
Michal Vasko | 5632e0d | 2020-07-31 14:13:37 +0200 | [diff] [blame] | 1308 | /* all descendants not in the diff will be deleted and redundant in the diff, so remove them */ |
Radek Krejci | a1c1e54 | 2020-09-29 16:06:52 +0200 | [diff] [blame] | 1309 | LY_LIST_FOR_SAFE(lyd_child_no_keys(diff_match), next, child) { |
| 1310 | if (lyd_find_sibling_first(lyd_child(src_diff), child, NULL) == LY_ENOTFOUND) { |
Michal Vasko | 5632e0d | 2020-07-31 14:13:37 +0200 | [diff] [blame] | 1311 | lyd_free_tree(child); |
| 1312 | } |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 1313 | } |
| 1314 | break; |
| 1315 | default: |
| 1316 | /* delete operation is not valid */ |
Michal Vasko | b7be7a8 | 2020-08-20 09:09:04 +0200 | [diff] [blame] | 1317 | LOGINT_RET(LYD_CTX(src_diff)); |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 1318 | } |
| 1319 | |
| 1320 | return LY_SUCCESS; |
| 1321 | } |
| 1322 | |
| 1323 | /** |
| 1324 | * @brief Check whether this diff node is redundant (does not change data). |
| 1325 | * |
| 1326 | * @param[in] diff Diff node. |
| 1327 | * @return 0 if not, non-zero if it is. |
| 1328 | */ |
| 1329 | static int |
| 1330 | lyd_diff_is_redundant(struct lyd_node *diff) |
| 1331 | { |
| 1332 | enum lyd_diff_op op; |
| 1333 | struct lyd_meta *meta, *orig_val_meta = NULL, *val_meta = NULL; |
| 1334 | struct lyd_node *child; |
| 1335 | const struct lys_module *mod; |
| 1336 | const char *str; |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 1337 | |
| 1338 | assert(diff); |
| 1339 | |
Radek Krejci | a1c1e54 | 2020-09-29 16:06:52 +0200 | [diff] [blame] | 1340 | child = lyd_child_no_keys(diff); |
Michal Vasko | b7be7a8 | 2020-08-20 09:09:04 +0200 | [diff] [blame] | 1341 | mod = ly_ctx_get_module_latest(LYD_CTX(diff), "yang"); |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 1342 | assert(mod); |
| 1343 | |
| 1344 | /* get node operation */ |
Michal Vasko | 53bf6f2 | 2020-07-14 08:23:40 +0200 | [diff] [blame] | 1345 | LY_CHECK_RET(lyd_diff_get_op(diff, &op), 0); |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 1346 | |
| 1347 | if ((op == LYD_DIFF_OP_REPLACE) && lysc_is_userordered(diff->schema)) { |
| 1348 | /* check for redundant move */ |
| 1349 | orig_val_meta = lyd_find_meta(diff->meta, mod, (diff->schema->nodetype == LYS_LIST ? "orig-key" : "orig-value")); |
| 1350 | val_meta = lyd_find_meta(diff->meta, mod, (diff->schema->nodetype == LYS_LIST ? "key" : "value")); |
| 1351 | assert(orig_val_meta && val_meta); |
| 1352 | |
| 1353 | if (!lyd_compare_meta(orig_val_meta, val_meta)) { |
| 1354 | /* there is actually no move */ |
Michal Vasko | 3a41dff | 2020-07-15 14:30:28 +0200 | [diff] [blame] | 1355 | lyd_free_meta_single(orig_val_meta); |
| 1356 | lyd_free_meta_single(val_meta); |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 1357 | if (child) { |
| 1358 | /* change operation to NONE, we have siblings */ |
| 1359 | lyd_diff_change_op(diff, LYD_DIFF_OP_NONE); |
| 1360 | return 0; |
| 1361 | } |
| 1362 | |
| 1363 | /* redundant node, BUT !! |
| 1364 | * In diff the move operation is always converted to be INSERT_AFTER, which is fine |
| 1365 | * because the data that this is applied on should not change for the diff lifetime. |
| 1366 | * However, when we are merging 2 diffs, this conversion is actually lossy because |
| 1367 | * if the data change, the move operation can also change its meaning. In this specific |
| 1368 | * case the move operation will be lost. But it can be considered a feature, it is not supported. |
| 1369 | */ |
| 1370 | return 1; |
| 1371 | } |
| 1372 | } else if ((op == LYD_DIFF_OP_NONE) && (diff->schema->nodetype & LYD_NODE_TERM)) { |
| 1373 | /* check whether at least the default flags are different */ |
| 1374 | meta = lyd_find_meta(diff->meta, mod, "orig-default"); |
| 1375 | assert(meta); |
Michal Vasko | ba99a3e | 2020-08-18 15:50:05 +0200 | [diff] [blame] | 1376 | str = meta->value.canonical; |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 1377 | |
| 1378 | /* if previous and current dflt flags are the same, this node is redundant */ |
| 1379 | if ((!strcmp(str, "true") && (diff->flags & LYD_DEFAULT)) || (!strcmp(str, "false") && !(diff->flags & LYD_DEFAULT))) { |
| 1380 | return 1; |
| 1381 | } |
| 1382 | return 0; |
| 1383 | } |
| 1384 | |
| 1385 | if (!child && (op == LYD_DIFF_OP_NONE)) { |
| 1386 | return 1; |
| 1387 | } |
| 1388 | |
| 1389 | return 0; |
| 1390 | } |
| 1391 | |
| 1392 | /** |
| 1393 | * @brief Merge sysrepo diff with another diff, recursively. |
| 1394 | * |
| 1395 | * @param[in] src_diff Source diff node. |
| 1396 | * @param[in] diff_parent Current sysrepo diff parent. |
| 1397 | * @param[in] diff_cb Optional diff callback. |
| 1398 | * @param[in] cb_data User data for @p diff_cb. |
Michal Vasko | c0e58e8 | 2020-11-11 19:04:33 +0100 | [diff] [blame] | 1399 | * @param[in] options Diff merge options. |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 1400 | * @param[in,out] diff Diff root node. |
| 1401 | * @return LY_ERR value. |
| 1402 | */ |
| 1403 | static LY_ERR |
| 1404 | lyd_diff_merge_r(const struct lyd_node *src_diff, struct lyd_node *diff_parent, lyd_diff_cb diff_cb, void *cb_data, |
Michal Vasko | c0e58e8 | 2020-11-11 19:04:33 +0100 | [diff] [blame] | 1405 | uint16_t options, struct lyd_node **diff) |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 1406 | { |
| 1407 | LY_ERR ret = LY_SUCCESS; |
| 1408 | struct lyd_node *child, *diff_node = NULL; |
| 1409 | enum lyd_diff_op src_op, cur_op; |
| 1410 | |
| 1411 | /* get source node operation */ |
| 1412 | LY_CHECK_RET(lyd_diff_get_op(src_diff, &src_op)); |
| 1413 | |
| 1414 | /* find an equal node in the current diff */ |
Radek Krejci | a1c1e54 | 2020-09-29 16:06:52 +0200 | [diff] [blame] | 1415 | lyd_diff_find_node(diff_parent ? lyd_child_no_keys(diff_parent) : *diff, src_diff, &diff_node); |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 1416 | |
| 1417 | if (diff_node) { |
| 1418 | /* get target (current) operation */ |
| 1419 | LY_CHECK_RET(lyd_diff_get_op(diff_node, &cur_op)); |
| 1420 | |
| 1421 | /* merge operations */ |
| 1422 | switch (src_op) { |
| 1423 | case LYD_DIFF_OP_REPLACE: |
| 1424 | ret = lyd_diff_merge_replace(diff_node, cur_op, src_diff); |
| 1425 | break; |
| 1426 | case LYD_DIFF_OP_CREATE: |
Michal Vasko | c0e58e8 | 2020-11-11 19:04:33 +0100 | [diff] [blame] | 1427 | ret = lyd_diff_merge_create(diff_node, cur_op, src_diff, options); |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 1428 | break; |
| 1429 | case LYD_DIFF_OP_DELETE: |
| 1430 | ret = lyd_diff_merge_delete(diff_node, cur_op, src_diff); |
| 1431 | break; |
| 1432 | case LYD_DIFF_OP_NONE: |
| 1433 | ret = lyd_diff_merge_none(diff_node, cur_op, src_diff); |
| 1434 | break; |
| 1435 | default: |
Michal Vasko | b7be7a8 | 2020-08-20 09:09:04 +0200 | [diff] [blame] | 1436 | LOGINT_RET(LYD_CTX(src_diff)); |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 1437 | } |
| 1438 | if (ret) { |
Michal Vasko | b7be7a8 | 2020-08-20 09:09:04 +0200 | [diff] [blame] | 1439 | LOGERR(LYD_CTX(src_diff), LY_EOTHER, "Merging operation \"%s\" failed.", lyd_diff_op2str(src_op)); |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 1440 | return ret; |
| 1441 | } |
| 1442 | |
| 1443 | if (diff_cb) { |
| 1444 | /* call callback */ |
Michal Vasko | bc5fba9 | 2020-08-07 12:14:39 +0200 | [diff] [blame] | 1445 | LY_CHECK_RET(diff_cb(src_diff, diff_node, cb_data)); |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 1446 | } |
| 1447 | |
| 1448 | /* update diff parent */ |
| 1449 | diff_parent = diff_node; |
| 1450 | |
| 1451 | /* merge src_diff recursively */ |
Radek Krejci | a1c1e54 | 2020-09-29 16:06:52 +0200 | [diff] [blame] | 1452 | LY_LIST_FOR(lyd_child_no_keys(src_diff), child) { |
Michal Vasko | c0e58e8 | 2020-11-11 19:04:33 +0100 | [diff] [blame] | 1453 | LY_CHECK_RET(lyd_diff_merge_r(child, diff_parent, diff_cb, cb_data, options, diff)); |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 1454 | } |
| 1455 | } else { |
| 1456 | /* add new diff node with all descendants */ |
Michal Vasko | 871a025 | 2020-11-11 18:35:24 +0100 | [diff] [blame] | 1457 | LY_CHECK_RET(lyd_dup_single(src_diff, (struct lyd_node_inner *)diff_parent, LYD_DUP_RECURSIVE | LYD_DUP_WITH_FLAGS, |
| 1458 | &diff_node)); |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 1459 | |
| 1460 | /* insert node into diff if not already */ |
| 1461 | if (!diff_parent) { |
Michal Vasko | b104f11 | 2020-07-17 09:54:54 +0200 | [diff] [blame] | 1462 | lyd_insert_sibling(*diff, diff_node, diff); |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 1463 | } |
| 1464 | |
| 1465 | /* update operation */ |
| 1466 | LY_CHECK_RET(lyd_diff_change_op(diff_node, src_op)); |
| 1467 | |
| 1468 | if (diff_cb) { |
| 1469 | /* call callback */ |
Michal Vasko | bc5fba9 | 2020-08-07 12:14:39 +0200 | [diff] [blame] | 1470 | LY_CHECK_RET(diff_cb(src_diff, diff_node, cb_data)); |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 1471 | } |
| 1472 | |
| 1473 | /* update diff parent */ |
| 1474 | diff_parent = diff_node; |
| 1475 | } |
| 1476 | |
| 1477 | /* remove any redundant nodes */ |
Michal Vasko | b98d708 | 2020-07-15 16:38:36 +0200 | [diff] [blame] | 1478 | if (lyd_diff_is_redundant(diff_parent)) { |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 1479 | if (diff_parent == *diff) { |
| 1480 | *diff = (*diff)->next; |
| 1481 | } |
| 1482 | lyd_free_tree(diff_parent); |
| 1483 | } |
| 1484 | |
| 1485 | return LY_SUCCESS; |
| 1486 | } |
| 1487 | |
| 1488 | API LY_ERR |
Michal Vasko | fb737aa | 2020-08-06 13:53:53 +0200 | [diff] [blame] | 1489 | lyd_diff_merge_module(struct lyd_node **diff, const struct lyd_node *src_diff, const struct lys_module *mod, |
Michal Vasko | c0e58e8 | 2020-11-11 19:04:33 +0100 | [diff] [blame] | 1490 | lyd_diff_cb diff_cb, void *cb_data, uint16_t options) |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 1491 | { |
| 1492 | const struct lyd_node *src_root; |
| 1493 | |
| 1494 | LY_LIST_FOR(src_diff, src_root) { |
| 1495 | if (mod && (lyd_owner_module(src_root) != mod)) { |
| 1496 | /* skip data nodes from different modules */ |
| 1497 | continue; |
| 1498 | } |
| 1499 | |
| 1500 | /* apply relevant nodes from the diff datatree */ |
Michal Vasko | c0e58e8 | 2020-11-11 19:04:33 +0100 | [diff] [blame] | 1501 | LY_CHECK_RET(lyd_diff_merge_r(src_root, NULL, diff_cb, cb_data, options, diff)); |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 1502 | } |
| 1503 | |
| 1504 | return LY_SUCCESS; |
| 1505 | } |
| 1506 | |
| 1507 | API LY_ERR |
Michal Vasko | 04f8591 | 2020-08-07 12:14:58 +0200 | [diff] [blame] | 1508 | lyd_diff_merge_tree(struct lyd_node **diff_first, struct lyd_node *diff_parent, const struct lyd_node *src_sibling, |
Michal Vasko | c0e58e8 | 2020-11-11 19:04:33 +0100 | [diff] [blame] | 1509 | lyd_diff_cb diff_cb, void *cb_data, uint16_t options) |
Michal Vasko | 04f8591 | 2020-08-07 12:14:58 +0200 | [diff] [blame] | 1510 | { |
| 1511 | if (!src_sibling) { |
| 1512 | return LY_SUCCESS; |
| 1513 | } |
| 1514 | |
Michal Vasko | c0e58e8 | 2020-11-11 19:04:33 +0100 | [diff] [blame] | 1515 | return lyd_diff_merge_r(src_sibling, diff_parent, diff_cb, cb_data, options, diff_first); |
Michal Vasko | 04f8591 | 2020-08-07 12:14:58 +0200 | [diff] [blame] | 1516 | } |
| 1517 | |
| 1518 | API LY_ERR |
Michal Vasko | c0e58e8 | 2020-11-11 19:04:33 +0100 | [diff] [blame] | 1519 | lyd_diff_merge_all(struct lyd_node **diff, const struct lyd_node *src_diff, uint16_t options) |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 1520 | { |
Michal Vasko | c0e58e8 | 2020-11-11 19:04:33 +0100 | [diff] [blame] | 1521 | return lyd_diff_merge_module(diff, src_diff, NULL, NULL, NULL, options); |
Michal Vasko | e6323f6 | 2020-07-09 15:49:02 +0200 | [diff] [blame] | 1522 | } |
Michal Vasko | 4231fb6 | 2020-07-13 13:54:47 +0200 | [diff] [blame] | 1523 | |
| 1524 | static LY_ERR |
| 1525 | lyd_diff_reverse_value(struct lyd_node *leaf, const struct lys_module *mod) |
| 1526 | { |
| 1527 | LY_ERR ret = LY_SUCCESS; |
| 1528 | struct lyd_meta *meta; |
Michal Vasko | ba99a3e | 2020-08-18 15:50:05 +0200 | [diff] [blame] | 1529 | const char *val1 = NULL; |
| 1530 | char *val2; |
Radek Krejci | 1deb5be | 2020-08-26 16:43:36 +0200 | [diff] [blame] | 1531 | uint32_t flags; |
Michal Vasko | 4231fb6 | 2020-07-13 13:54:47 +0200 | [diff] [blame] | 1532 | |
| 1533 | meta = lyd_find_meta(leaf->meta, mod, "orig-value"); |
Michal Vasko | b7be7a8 | 2020-08-20 09:09:04 +0200 | [diff] [blame] | 1534 | LY_CHECK_ERR_RET(!meta, LOGINT(LYD_CTX(leaf)), LY_EINT); |
Michal Vasko | 4231fb6 | 2020-07-13 13:54:47 +0200 | [diff] [blame] | 1535 | |
| 1536 | /* orig-value */ |
Michal Vasko | ba99a3e | 2020-08-18 15:50:05 +0200 | [diff] [blame] | 1537 | val1 = meta->value.canonical; |
Michal Vasko | 4231fb6 | 2020-07-13 13:54:47 +0200 | [diff] [blame] | 1538 | |
| 1539 | /* current value */ |
Michal Vasko | b7be7a8 | 2020-08-20 09:09:04 +0200 | [diff] [blame] | 1540 | val2 = strdup(LYD_CANON_VALUE(leaf)); |
Michal Vasko | 4231fb6 | 2020-07-13 13:54:47 +0200 | [diff] [blame] | 1541 | |
| 1542 | /* switch values, keep default flag */ |
| 1543 | flags = leaf->flags; |
| 1544 | LY_CHECK_GOTO(ret = lyd_change_term(leaf, val1), cleanup); |
| 1545 | leaf->flags = flags; |
| 1546 | LY_CHECK_GOTO(ret = lyd_change_meta(meta, val2), cleanup); |
| 1547 | |
| 1548 | cleanup: |
Michal Vasko | ba99a3e | 2020-08-18 15:50:05 +0200 | [diff] [blame] | 1549 | free(val2); |
Michal Vasko | 4231fb6 | 2020-07-13 13:54:47 +0200 | [diff] [blame] | 1550 | return ret; |
| 1551 | } |
| 1552 | |
| 1553 | static LY_ERR |
| 1554 | lyd_diff_reverse_default(struct lyd_node *node, const struct lys_module *mod) |
| 1555 | { |
| 1556 | struct lyd_meta *meta; |
Radek Krejci | 1deb5be | 2020-08-26 16:43:36 +0200 | [diff] [blame] | 1557 | uint32_t flag1, flag2; |
Michal Vasko | 4231fb6 | 2020-07-13 13:54:47 +0200 | [diff] [blame] | 1558 | |
| 1559 | meta = lyd_find_meta(node->meta, mod, "orig-default"); |
Michal Vasko | 610e93b | 2020-11-09 20:58:32 +0100 | [diff] [blame] | 1560 | LY_CHECK_ERR_RET(!meta, LOGINT(mod->ctx), LY_EINT); |
Michal Vasko | 4231fb6 | 2020-07-13 13:54:47 +0200 | [diff] [blame] | 1561 | |
| 1562 | /* orig-default */ |
Michal Vasko | ba99a3e | 2020-08-18 15:50:05 +0200 | [diff] [blame] | 1563 | if (meta->value.boolean) { |
Michal Vasko | 4231fb6 | 2020-07-13 13:54:47 +0200 | [diff] [blame] | 1564 | flag1 = LYD_DEFAULT; |
| 1565 | } else { |
| 1566 | flag1 = 0; |
| 1567 | } |
| 1568 | |
| 1569 | /* current default */ |
| 1570 | flag2 = node->flags & LYD_DEFAULT; |
| 1571 | |
Michal Vasko | 610e93b | 2020-11-09 20:58:32 +0100 | [diff] [blame] | 1572 | if (flag1 == flag2) { |
| 1573 | /* no default state change so nothing to reverse */ |
| 1574 | return LY_SUCCESS; |
| 1575 | } |
| 1576 | |
Michal Vasko | 4231fb6 | 2020-07-13 13:54:47 +0200 | [diff] [blame] | 1577 | /* switch defaults */ |
| 1578 | node->flags &= ~LYD_DEFAULT; |
| 1579 | node->flags |= flag1; |
| 1580 | LY_CHECK_RET(lyd_change_meta(meta, flag2 ? "true" : "false")); |
| 1581 | |
| 1582 | return LY_SUCCESS; |
| 1583 | } |
| 1584 | |
| 1585 | static LY_ERR |
| 1586 | lyd_diff_reverse_meta(struct lyd_node *node, const struct lys_module *mod, const char *name1, const char *name2) |
| 1587 | { |
| 1588 | LY_ERR ret = LY_SUCCESS; |
| 1589 | struct lyd_meta *meta1, *meta2; |
Michal Vasko | ba99a3e | 2020-08-18 15:50:05 +0200 | [diff] [blame] | 1590 | const char *val1 = NULL; |
| 1591 | char *val2 = NULL; |
Michal Vasko | 4231fb6 | 2020-07-13 13:54:47 +0200 | [diff] [blame] | 1592 | |
| 1593 | meta1 = lyd_find_meta(node->meta, mod, name1); |
Michal Vasko | b7be7a8 | 2020-08-20 09:09:04 +0200 | [diff] [blame] | 1594 | LY_CHECK_ERR_RET(!meta1, LOGINT(LYD_CTX(node)), LY_EINT); |
Michal Vasko | 4231fb6 | 2020-07-13 13:54:47 +0200 | [diff] [blame] | 1595 | |
| 1596 | meta2 = lyd_find_meta(node->meta, mod, name2); |
Michal Vasko | b7be7a8 | 2020-08-20 09:09:04 +0200 | [diff] [blame] | 1597 | LY_CHECK_ERR_RET(!meta2, LOGINT(LYD_CTX(node)), LY_EINT); |
Michal Vasko | 4231fb6 | 2020-07-13 13:54:47 +0200 | [diff] [blame] | 1598 | |
| 1599 | /* value1 */ |
Michal Vasko | ba99a3e | 2020-08-18 15:50:05 +0200 | [diff] [blame] | 1600 | val1 = meta1->value.canonical; |
Michal Vasko | 4231fb6 | 2020-07-13 13:54:47 +0200 | [diff] [blame] | 1601 | |
| 1602 | /* value2 */ |
Michal Vasko | ba99a3e | 2020-08-18 15:50:05 +0200 | [diff] [blame] | 1603 | val2 = strdup(meta2->value.canonical); |
Michal Vasko | 4231fb6 | 2020-07-13 13:54:47 +0200 | [diff] [blame] | 1604 | |
| 1605 | /* switch values */ |
| 1606 | LY_CHECK_GOTO(ret = lyd_change_meta(meta1, val2), cleanup); |
| 1607 | LY_CHECK_GOTO(ret = lyd_change_meta(meta2, val1), cleanup); |
| 1608 | |
| 1609 | cleanup: |
Michal Vasko | ba99a3e | 2020-08-18 15:50:05 +0200 | [diff] [blame] | 1610 | free(val2); |
Michal Vasko | 4231fb6 | 2020-07-13 13:54:47 +0200 | [diff] [blame] | 1611 | return ret; |
| 1612 | } |
| 1613 | |
| 1614 | API LY_ERR |
Michal Vasko | 6653581 | 2020-08-11 08:44:22 +0200 | [diff] [blame] | 1615 | lyd_diff_reverse_all(const struct lyd_node *src_diff, struct lyd_node **diff) |
Michal Vasko | 4231fb6 | 2020-07-13 13:54:47 +0200 | [diff] [blame] | 1616 | { |
| 1617 | LY_ERR ret = LY_SUCCESS; |
| 1618 | const struct lys_module *mod; |
Michal Vasko | 56daf73 | 2020-08-10 10:57:18 +0200 | [diff] [blame] | 1619 | struct lyd_node *root, *elem; |
Michal Vasko | 4231fb6 | 2020-07-13 13:54:47 +0200 | [diff] [blame] | 1620 | enum lyd_diff_op op; |
| 1621 | |
| 1622 | LY_CHECK_ARG_RET(NULL, diff, LY_EINVAL); |
| 1623 | |
| 1624 | if (!src_diff) { |
| 1625 | *diff = NULL; |
| 1626 | return LY_SUCCESS; |
| 1627 | } |
| 1628 | |
| 1629 | /* duplicate diff */ |
Michal Vasko | 3a41dff | 2020-07-15 14:30:28 +0200 | [diff] [blame] | 1630 | LY_CHECK_RET(lyd_dup_siblings(src_diff, NULL, LYD_DUP_RECURSIVE, diff)); |
Michal Vasko | 4231fb6 | 2020-07-13 13:54:47 +0200 | [diff] [blame] | 1631 | |
| 1632 | /* find module with metadata needed for later */ |
Michal Vasko | b7be7a8 | 2020-08-20 09:09:04 +0200 | [diff] [blame] | 1633 | mod = ly_ctx_get_module_latest(LYD_CTX(src_diff), "yang"); |
| 1634 | LY_CHECK_ERR_GOTO(!mod, LOGINT(LYD_CTX(src_diff)); ret = LY_EINT, cleanup); |
Michal Vasko | 4231fb6 | 2020-07-13 13:54:47 +0200 | [diff] [blame] | 1635 | |
| 1636 | LY_LIST_FOR(*diff, root) { |
Michal Vasko | 56daf73 | 2020-08-10 10:57:18 +0200 | [diff] [blame] | 1637 | LYD_TREE_DFS_BEGIN(root, elem) { |
Michal Vasko | 0f5c6a5 | 2020-11-06 17:18:03 +0100 | [diff] [blame] | 1638 | /* skip all keys */ |
| 1639 | if (!lysc_is_key(elem->schema)) { |
| 1640 | /* find operation attribute, if any */ |
| 1641 | LY_CHECK_GOTO(ret = lyd_diff_get_op(elem, &op), cleanup); |
Michal Vasko | 4231fb6 | 2020-07-13 13:54:47 +0200 | [diff] [blame] | 1642 | |
Michal Vasko | 0f5c6a5 | 2020-11-06 17:18:03 +0100 | [diff] [blame] | 1643 | switch (op) { |
| 1644 | case LYD_DIFF_OP_CREATE: |
| 1645 | /* reverse create to delete */ |
| 1646 | LY_CHECK_GOTO(ret = lyd_diff_change_op(elem, LYD_DIFF_OP_DELETE), cleanup); |
Michal Vasko | 4231fb6 | 2020-07-13 13:54:47 +0200 | [diff] [blame] | 1647 | break; |
Michal Vasko | 0f5c6a5 | 2020-11-06 17:18:03 +0100 | [diff] [blame] | 1648 | case LYD_DIFF_OP_DELETE: |
| 1649 | /* reverse delete to create */ |
| 1650 | LY_CHECK_GOTO(ret = lyd_diff_change_op(elem, LYD_DIFF_OP_CREATE), cleanup); |
Michal Vasko | 4231fb6 | 2020-07-13 13:54:47 +0200 | [diff] [blame] | 1651 | break; |
Michal Vasko | 0f5c6a5 | 2020-11-06 17:18:03 +0100 | [diff] [blame] | 1652 | case LYD_DIFF_OP_REPLACE: |
| 1653 | switch (elem->schema->nodetype) { |
| 1654 | case LYS_LEAF: |
| 1655 | /* leaf value change */ |
| 1656 | LY_CHECK_GOTO(ret = lyd_diff_reverse_value(elem, mod), cleanup); |
| 1657 | LY_CHECK_GOTO(ret = lyd_diff_reverse_default(elem, mod), cleanup); |
| 1658 | break; |
| 1659 | case LYS_LEAFLIST: |
| 1660 | /* leaf-list move */ |
| 1661 | LY_CHECK_GOTO(ret = lyd_diff_reverse_default(elem, mod), cleanup); |
| 1662 | LY_CHECK_GOTO(ret = lyd_diff_reverse_meta(elem, mod, "orig-value", "value"), cleanup); |
| 1663 | break; |
| 1664 | case LYS_LIST: |
| 1665 | /* list move */ |
| 1666 | LY_CHECK_GOTO(ret = lyd_diff_reverse_meta(elem, mod, "orig-key", "key"), cleanup); |
| 1667 | break; |
| 1668 | default: |
| 1669 | LOGINT(LYD_CTX(src_diff)); |
| 1670 | ret = LY_EINT; |
| 1671 | goto cleanup; |
| 1672 | } |
Michal Vasko | 4231fb6 | 2020-07-13 13:54:47 +0200 | [diff] [blame] | 1673 | break; |
Michal Vasko | 0f5c6a5 | 2020-11-06 17:18:03 +0100 | [diff] [blame] | 1674 | case LYD_DIFF_OP_NONE: |
| 1675 | switch (elem->schema->nodetype) { |
| 1676 | case LYS_LEAF: |
| 1677 | case LYS_LEAFLIST: |
| 1678 | /* default flag change */ |
| 1679 | LY_CHECK_GOTO(ret = lyd_diff_reverse_default(elem, mod), cleanup); |
| 1680 | break; |
| 1681 | default: |
| 1682 | /* nothing to do */ |
| 1683 | break; |
| 1684 | } |
Michal Vasko | 4231fb6 | 2020-07-13 13:54:47 +0200 | [diff] [blame] | 1685 | break; |
| 1686 | } |
Michal Vasko | 4231fb6 | 2020-07-13 13:54:47 +0200 | [diff] [blame] | 1687 | } |
| 1688 | |
Michal Vasko | 56daf73 | 2020-08-10 10:57:18 +0200 | [diff] [blame] | 1689 | LYD_TREE_DFS_END(root, elem); |
Michal Vasko | 4231fb6 | 2020-07-13 13:54:47 +0200 | [diff] [blame] | 1690 | } |
| 1691 | } |
| 1692 | |
| 1693 | cleanup: |
| 1694 | if (ret) { |
| 1695 | lyd_free_siblings(*diff); |
| 1696 | *diff = NULL; |
| 1697 | } |
| 1698 | return ret; |
| 1699 | } |