311 lines
8.1 KiB
C
311 lines
8.1 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* Kernel module for testing utf-8 support.
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*
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* Copyright 2017 Collabora Ltd.
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*/
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#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
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#include <linux/module.h>
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#include <linux/printk.h>
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#include <linux/unicode.h>
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#include <linux/dcache.h>
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#include "utf8n.h"
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unsigned int failed_tests;
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unsigned int total_tests;
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/* Tests will be based on this version. */
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#define UTF8_LATEST UNICODE_AGE(12, 1, 0)
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#define _test(cond, func, line, fmt, ...) do { \
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total_tests++; \
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if (!cond) { \
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failed_tests++; \
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pr_err("test %s:%d Failed: %s%s", \
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func, line, #cond, (fmt?":":".")); \
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if (fmt) \
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pr_err(fmt, ##__VA_ARGS__); \
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} \
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} while (0)
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#define test_f(cond, fmt, ...) _test(cond, __func__, __LINE__, fmt, ##__VA_ARGS__)
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#define test(cond) _test(cond, __func__, __LINE__, "")
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static const struct {
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/* UTF-8 strings in this vector _must_ be NULL-terminated. */
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unsigned char str[10];
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unsigned char dec[10];
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} nfdi_test_data[] = {
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/* Trivial sequence */
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{
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/* "ABba" decomposes to itself */
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.str = "aBba",
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.dec = "aBba",
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},
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/* Simple equivalent sequences */
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{
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/* 'VULGAR FRACTION ONE QUARTER' cannot decompose to
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'NUMBER 1' + 'FRACTION SLASH' + 'NUMBER 4' on
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canonical decomposition */
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.str = {0xc2, 0xbc, 0x00},
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.dec = {0xc2, 0xbc, 0x00},
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},
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{
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/* 'LATIN SMALL LETTER A WITH DIAERESIS' decomposes to
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'LETTER A' + 'COMBINING DIAERESIS' */
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.str = {0xc3, 0xa4, 0x00},
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.dec = {0x61, 0xcc, 0x88, 0x00},
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},
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{
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/* 'LATIN SMALL LETTER LJ' can't decompose to
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'LETTER L' + 'LETTER J' on canonical decomposition */
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.str = {0xC7, 0x89, 0x00},
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.dec = {0xC7, 0x89, 0x00},
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},
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{
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/* GREEK ANO TELEIA decomposes to MIDDLE DOT */
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.str = {0xCE, 0x87, 0x00},
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.dec = {0xC2, 0xB7, 0x00}
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},
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/* Canonical ordering */
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{
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/* A + 'COMBINING ACUTE ACCENT' + 'COMBINING OGONEK' decomposes
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to A + 'COMBINING OGONEK' + 'COMBINING ACUTE ACCENT' */
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.str = {0x41, 0xcc, 0x81, 0xcc, 0xa8, 0x0},
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.dec = {0x41, 0xcc, 0xa8, 0xcc, 0x81, 0x0},
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},
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{
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/* 'LATIN SMALL LETTER A WITH DIAERESIS' + 'COMBINING OGONEK'
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decomposes to
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'LETTER A' + 'COMBINING OGONEK' + 'COMBINING DIAERESIS' */
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.str = {0xc3, 0xa4, 0xCC, 0xA8, 0x00},
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.dec = {0x61, 0xCC, 0xA8, 0xcc, 0x88, 0x00},
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},
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};
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static const struct {
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/* UTF-8 strings in this vector _must_ be NULL-terminated. */
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unsigned char str[30];
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unsigned char ncf[30];
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} nfdicf_test_data[] = {
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/* Trivial sequences */
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{
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/* "ABba" folds to lowercase */
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.str = {0x41, 0x42, 0x62, 0x61, 0x00},
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.ncf = {0x61, 0x62, 0x62, 0x61, 0x00},
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},
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{
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/* All ASCII folds to lower-case */
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.str = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0.1",
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.ncf = "abcdefghijklmnopqrstuvwxyz0.1",
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},
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{
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/* LATIN SMALL LETTER SHARP S folds to
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LATIN SMALL LETTER S + LATIN SMALL LETTER S */
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.str = {0xc3, 0x9f, 0x00},
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.ncf = {0x73, 0x73, 0x00},
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},
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{
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/* LATIN CAPITAL LETTER A WITH RING ABOVE folds to
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LATIN SMALL LETTER A + COMBINING RING ABOVE */
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.str = {0xC3, 0x85, 0x00},
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.ncf = {0x61, 0xcc, 0x8a, 0x00},
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},
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/* Introduced by UTF-8.0.0. */
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/* Cherokee letters are interesting test-cases because they fold
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to upper-case. Before 8.0.0, Cherokee lowercase were
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undefined, thus, the folding from LC is not stable between
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7.0.0 -> 8.0.0, but it is from UC. */
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{
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/* CHEROKEE SMALL LETTER A folds to CHEROKEE LETTER A */
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.str = {0xea, 0xad, 0xb0, 0x00},
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.ncf = {0xe1, 0x8e, 0xa0, 0x00},
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},
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{
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/* CHEROKEE SMALL LETTER YE folds to CHEROKEE LETTER YE */
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.str = {0xe1, 0x8f, 0xb8, 0x00},
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.ncf = {0xe1, 0x8f, 0xb0, 0x00},
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},
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{
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/* OLD HUNGARIAN CAPITAL LETTER AMB folds to
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OLD HUNGARIAN SMALL LETTER AMB */
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.str = {0xf0, 0x90, 0xb2, 0x83, 0x00},
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.ncf = {0xf0, 0x90, 0xb3, 0x83, 0x00},
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},
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/* Introduced by UTF-9.0.0. */
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{
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/* OSAGE CAPITAL LETTER CHA folds to
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OSAGE SMALL LETTER CHA */
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.str = {0xf0, 0x90, 0x92, 0xb5, 0x00},
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.ncf = {0xf0, 0x90, 0x93, 0x9d, 0x00},
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},
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{
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/* LATIN CAPITAL LETTER SMALL CAPITAL I folds to
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LATIN LETTER SMALL CAPITAL I */
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.str = {0xea, 0x9e, 0xae, 0x00},
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.ncf = {0xc9, 0xaa, 0x00},
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},
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/* Introduced by UTF-11.0.0. */
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{
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/* GEORGIAN SMALL LETTER AN folds to GEORGIAN MTAVRULI
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CAPITAL LETTER AN */
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.str = {0xe1, 0xb2, 0x90, 0x00},
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.ncf = {0xe1, 0x83, 0x90, 0x00},
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}
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};
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static ssize_t utf8len(const struct unicode_map *um, enum utf8_normalization n,
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const char *s)
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{
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return utf8nlen(um, n, s, (size_t)-1);
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}
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static int utf8cursor(struct utf8cursor *u8c, const struct unicode_map *um,
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enum utf8_normalization n, const char *s)
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{
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return utf8ncursor(u8c, um, n, s, (unsigned int)-1);
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}
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static void check_utf8_nfdi(struct unicode_map *um)
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{
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int i;
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struct utf8cursor u8c;
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for (i = 0; i < ARRAY_SIZE(nfdi_test_data); i++) {
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int len = strlen(nfdi_test_data[i].str);
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int nlen = strlen(nfdi_test_data[i].dec);
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int j = 0;
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unsigned char c;
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test((utf8len(um, UTF8_NFDI, nfdi_test_data[i].str) == nlen));
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test((utf8nlen(um, UTF8_NFDI, nfdi_test_data[i].str, len) ==
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nlen));
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if (utf8cursor(&u8c, um, UTF8_NFDI, nfdi_test_data[i].str) < 0)
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pr_err("can't create cursor\n");
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while ((c = utf8byte(&u8c)) > 0) {
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test_f((c == nfdi_test_data[i].dec[j]),
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"Unexpected byte 0x%x should be 0x%x\n",
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c, nfdi_test_data[i].dec[j]);
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j++;
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}
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test((j == nlen));
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}
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}
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static void check_utf8_nfdicf(struct unicode_map *um)
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{
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int i;
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struct utf8cursor u8c;
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for (i = 0; i < ARRAY_SIZE(nfdicf_test_data); i++) {
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int len = strlen(nfdicf_test_data[i].str);
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int nlen = strlen(nfdicf_test_data[i].ncf);
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int j = 0;
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unsigned char c;
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test((utf8len(um, UTF8_NFDICF, nfdicf_test_data[i].str) ==
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nlen));
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test((utf8nlen(um, UTF8_NFDICF, nfdicf_test_data[i].str, len) ==
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nlen));
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if (utf8cursor(&u8c, um, UTF8_NFDICF,
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nfdicf_test_data[i].str) < 0)
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pr_err("can't create cursor\n");
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while ((c = utf8byte(&u8c)) > 0) {
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test_f((c == nfdicf_test_data[i].ncf[j]),
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"Unexpected byte 0x%x should be 0x%x\n",
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c, nfdicf_test_data[i].ncf[j]);
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j++;
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}
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test((j == nlen));
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}
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}
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static void check_utf8_comparisons(struct unicode_map *table)
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{
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int i;
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for (i = 0; i < ARRAY_SIZE(nfdi_test_data); i++) {
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const struct qstr s1 = {.name = nfdi_test_data[i].str,
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.len = sizeof(nfdi_test_data[i].str)};
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const struct qstr s2 = {.name = nfdi_test_data[i].dec,
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.len = sizeof(nfdi_test_data[i].dec)};
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test_f(!utf8_strncmp(table, &s1, &s2),
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"%s %s comparison mismatch\n", s1.name, s2.name);
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}
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for (i = 0; i < ARRAY_SIZE(nfdicf_test_data); i++) {
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const struct qstr s1 = {.name = nfdicf_test_data[i].str,
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.len = sizeof(nfdicf_test_data[i].str)};
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const struct qstr s2 = {.name = nfdicf_test_data[i].ncf,
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.len = sizeof(nfdicf_test_data[i].ncf)};
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test_f(!utf8_strncasecmp(table, &s1, &s2),
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"%s %s comparison mismatch\n", s1.name, s2.name);
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}
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}
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static void check_supported_versions(struct unicode_map *um)
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{
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/* Unicode 7.0.0 should be supported. */
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test(utf8version_is_supported(um, UNICODE_AGE(7, 0, 0)));
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/* Unicode 9.0.0 should be supported. */
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test(utf8version_is_supported(um, UNICODE_AGE(9, 0, 0)));
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/* Unicode 1x.0.0 (the latest version) should be supported. */
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test(utf8version_is_supported(um, UTF8_LATEST));
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/* Next versions don't exist. */
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test(!utf8version_is_supported(um, UNICODE_AGE(13, 0, 0)));
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test(!utf8version_is_supported(um, UNICODE_AGE(0, 0, 0)));
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test(!utf8version_is_supported(um, UNICODE_AGE(-1, -1, -1)));
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}
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static int __init init_test_ucd(void)
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{
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struct unicode_map *um;
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failed_tests = 0;
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total_tests = 0;
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um = utf8_load(UTF8_LATEST);
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if (IS_ERR(um)) {
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pr_err("%s: Unable to load utf8 table.\n", __func__);
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return PTR_ERR(um);
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}
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check_supported_versions(um);
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check_utf8_nfdi(um);
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check_utf8_nfdicf(um);
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check_utf8_comparisons(um);
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if (!failed_tests)
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pr_info("All %u tests passed\n", total_tests);
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else
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pr_err("%u out of %u tests failed\n", failed_tests,
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total_tests);
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utf8_unload(um);
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return 0;
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}
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static void __exit exit_test_ucd(void)
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{
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}
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module_init(init_test_ucd);
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module_exit(exit_test_ucd);
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MODULE_AUTHOR("Gabriel Krisman Bertazi <krisman@collabora.co.uk>");
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MODULE_LICENSE("GPL");
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