Radek Krejci | 86d106e | 2018-10-18 09:53:19 +0200 | [diff] [blame] | 1 | /** |
| 2 | * @file tree_schema_helpers.c |
| 3 | * @author Radek Krejci <rkrejci@cesnet.cz> |
| 4 | * @brief Parsing and validation helper functions |
| 5 | * |
| 6 | * Copyright (c) 2015 - 2018 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 | */ |
| 14 | #define _XOPEN_SOURCE |
| 15 | |
| 16 | #include <ctype.h> |
| 17 | #include <limits.h> |
| 18 | #include <time.h> |
| 19 | |
| 20 | #include "libyang.h" |
| 21 | #include "common.h" |
| 22 | #include "tree_schema_internal.h" |
| 23 | |
| 24 | LY_ERR |
| 25 | lysp_check_prefix(struct ly_parser_ctx *ctx, struct lysp_module *module, const char **value) |
| 26 | { |
| 27 | struct lysp_import *i; |
| 28 | |
| 29 | if (module->prefix && &module->prefix != value && !strcmp(module->prefix, *value)) { |
| 30 | LOGVAL(ctx->ctx, LY_VLOG_LINE, &ctx->line, LYVE_REFERENCE, |
| 31 | "Prefix \"%s\" already used as module prefix.", *value); |
| 32 | return LY_EEXIST; |
| 33 | } |
| 34 | if (module->imports) { |
| 35 | LY_ARRAY_FOR(module->imports, struct lysp_import, i) { |
| 36 | if (i->prefix && &i->prefix != value && !strcmp(i->prefix, *value)) { |
| 37 | LOGVAL(ctx->ctx, LY_VLOG_LINE, &ctx->line, LYVE_REFERENCE, |
| 38 | "Prefix \"%s\" already used to import \"%s\" module.", *value, i->name); |
| 39 | return LY_EEXIST; |
| 40 | } |
| 41 | } |
| 42 | } |
| 43 | return LY_SUCCESS; |
| 44 | } |
| 45 | |
| 46 | LY_ERR |
| 47 | lysp_check_date(struct ly_ctx *ctx, const char *date, int date_len, const char *stmt) |
| 48 | { |
| 49 | int i; |
| 50 | struct tm tm, tm_; |
| 51 | char *r; |
| 52 | |
| 53 | LY_CHECK_ARG_RET(ctx, date, LY_EINVAL); |
| 54 | LY_CHECK_ERR_RET(date_len != LY_REV_SIZE - 1, LOGARG(ctx, date_len), LY_EINVAL); |
| 55 | |
| 56 | /* check format */ |
| 57 | for (i = 0; i < date_len; i++) { |
| 58 | if (i == 4 || i == 7) { |
| 59 | if (date[i] != '-') { |
| 60 | goto error; |
| 61 | } |
| 62 | } else if (!isdigit(date[i])) { |
| 63 | goto error; |
| 64 | } |
| 65 | } |
| 66 | |
| 67 | /* check content, e.g. 2018-02-31 */ |
| 68 | memset(&tm, 0, sizeof tm); |
| 69 | r = strptime(date, "%Y-%m-%d", &tm); |
| 70 | if (!r || r != &date[LY_REV_SIZE - 1]) { |
| 71 | goto error; |
| 72 | } |
| 73 | memcpy(&tm_, &tm, sizeof tm); |
| 74 | mktime(&tm_); /* mktime modifies tm_ if it refers invalid date */ |
| 75 | if (tm.tm_mday != tm_.tm_mday) { /* e.g 2018-02-29 -> 2018-03-01 */ |
| 76 | /* checking days is enough, since other errors |
| 77 | * have been checked by strptime() */ |
| 78 | goto error; |
| 79 | } |
| 80 | |
| 81 | return LY_SUCCESS; |
| 82 | |
| 83 | error: |
| 84 | LOGVAL(ctx, LY_VLOG_NONE, NULL, LY_VCODE_INVAL, date_len, date, stmt); |
| 85 | return LY_EINVAL; |
| 86 | } |
| 87 | |
| 88 | void |
| 89 | lysp_sort_revisions(struct lysp_revision *revs) |
| 90 | { |
| 91 | uint8_t i, r; |
| 92 | struct lysp_revision rev; |
| 93 | |
| 94 | for (i = 1, r = 0; revs && i < LY_ARRAY_SIZE(revs); i++) { |
Radek Krejci | 2c4e717 | 2018-10-19 15:56:26 +0200 | [diff] [blame^] | 95 | if (strcmp(revs[i].rev, revs[r].rev) > 0) { |
Radek Krejci | 86d106e | 2018-10-18 09:53:19 +0200 | [diff] [blame] | 96 | r = i; |
| 97 | } |
| 98 | } |
| 99 | |
| 100 | if (r) { |
| 101 | /* the newest revision is not on position 0, switch them */ |
Radek Krejci | 2c4e717 | 2018-10-19 15:56:26 +0200 | [diff] [blame^] | 102 | memcpy(&rev, &revs[0], sizeof rev); |
| 103 | memcpy(&revs[0], &revs[r], sizeof rev); |
| 104 | memcpy(&revs[r], &rev, sizeof rev); |
Radek Krejci | 86d106e | 2018-10-18 09:53:19 +0200 | [diff] [blame] | 105 | } |
| 106 | } |
Radek Krejci | 151a5b7 | 2018-10-19 14:21:44 +0200 | [diff] [blame] | 107 | |
| 108 | struct lysc_module * |
| 109 | lysc_module_find_prefix(struct lysc_module *mod, const char *prefix, size_t len) |
| 110 | { |
| 111 | struct lysc_import *imp; |
| 112 | |
| 113 | assert(mod); |
| 114 | |
| 115 | if (!strncmp(mod->prefix, prefix, len) && mod->prefix[len] == '\0') { |
| 116 | /* it is the prefix of the module itself */ |
| 117 | return mod; |
| 118 | } |
| 119 | |
| 120 | /* search in imports */ |
| 121 | LY_ARRAY_FOR(mod->imports, struct lysc_import, imp) { |
| 122 | if (!strncmp(imp->prefix, prefix, len) && mod->prefix[len] == '\0') { |
| 123 | return imp->module; |
| 124 | } |
| 125 | } |
| 126 | |
| 127 | return NULL; |
| 128 | } |