mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-23 17:30:02 +00:00
![Christoph Hellwig](/assets/img/avatar_default.png)
utf8data.h contains a large database table which is an auto-generated decodification trie for the unicode normalization functions. Allow building it into a separate module. Based on a patch from Shreeya Patel <shreeya.patel@collabora.com>. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Gabriel Krisman Bertazi <krisman@collabora.com>
310 lines
8.1 KiB
C
310 lines
8.1 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
|
|
/*
|
|
* Kernel module for testing utf-8 support.
|
|
*
|
|
* Copyright 2017 Collabora Ltd.
|
|
*/
|
|
|
|
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/printk.h>
|
|
#include <linux/unicode.h>
|
|
#include <linux/dcache.h>
|
|
|
|
#include "utf8n.h"
|
|
|
|
unsigned int failed_tests;
|
|
unsigned int total_tests;
|
|
|
|
/* Tests will be based on this version. */
|
|
#define UTF8_LATEST UNICODE_AGE(12, 1, 0)
|
|
|
|
#define _test(cond, func, line, fmt, ...) do { \
|
|
total_tests++; \
|
|
if (!cond) { \
|
|
failed_tests++; \
|
|
pr_err("test %s:%d Failed: %s%s", \
|
|
func, line, #cond, (fmt?":":".")); \
|
|
if (fmt) \
|
|
pr_err(fmt, ##__VA_ARGS__); \
|
|
} \
|
|
} while (0)
|
|
#define test_f(cond, fmt, ...) _test(cond, __func__, __LINE__, fmt, ##__VA_ARGS__)
|
|
#define test(cond) _test(cond, __func__, __LINE__, "")
|
|
|
|
static const struct {
|
|
/* UTF-8 strings in this vector _must_ be NULL-terminated. */
|
|
unsigned char str[10];
|
|
unsigned char dec[10];
|
|
} nfdi_test_data[] = {
|
|
/* Trivial sequence */
|
|
{
|
|
/* "ABba" decomposes to itself */
|
|
.str = "aBba",
|
|
.dec = "aBba",
|
|
},
|
|
/* Simple equivalent sequences */
|
|
{
|
|
/* 'VULGAR FRACTION ONE QUARTER' cannot decompose to
|
|
'NUMBER 1' + 'FRACTION SLASH' + 'NUMBER 4' on
|
|
canonical decomposition */
|
|
.str = {0xc2, 0xbc, 0x00},
|
|
.dec = {0xc2, 0xbc, 0x00},
|
|
},
|
|
{
|
|
/* 'LATIN SMALL LETTER A WITH DIAERESIS' decomposes to
|
|
'LETTER A' + 'COMBINING DIAERESIS' */
|
|
.str = {0xc3, 0xa4, 0x00},
|
|
.dec = {0x61, 0xcc, 0x88, 0x00},
|
|
},
|
|
{
|
|
/* 'LATIN SMALL LETTER LJ' can't decompose to
|
|
'LETTER L' + 'LETTER J' on canonical decomposition */
|
|
.str = {0xC7, 0x89, 0x00},
|
|
.dec = {0xC7, 0x89, 0x00},
|
|
},
|
|
{
|
|
/* GREEK ANO TELEIA decomposes to MIDDLE DOT */
|
|
.str = {0xCE, 0x87, 0x00},
|
|
.dec = {0xC2, 0xB7, 0x00}
|
|
},
|
|
/* Canonical ordering */
|
|
{
|
|
/* A + 'COMBINING ACUTE ACCENT' + 'COMBINING OGONEK' decomposes
|
|
to A + 'COMBINING OGONEK' + 'COMBINING ACUTE ACCENT' */
|
|
.str = {0x41, 0xcc, 0x81, 0xcc, 0xa8, 0x0},
|
|
.dec = {0x41, 0xcc, 0xa8, 0xcc, 0x81, 0x0},
|
|
},
|
|
{
|
|
/* 'LATIN SMALL LETTER A WITH DIAERESIS' + 'COMBINING OGONEK'
|
|
decomposes to
|
|
'LETTER A' + 'COMBINING OGONEK' + 'COMBINING DIAERESIS' */
|
|
.str = {0xc3, 0xa4, 0xCC, 0xA8, 0x00},
|
|
|
|
.dec = {0x61, 0xCC, 0xA8, 0xcc, 0x88, 0x00},
|
|
},
|
|
|
|
};
|
|
|
|
static const struct {
|
|
/* UTF-8 strings in this vector _must_ be NULL-terminated. */
|
|
unsigned char str[30];
|
|
unsigned char ncf[30];
|
|
} nfdicf_test_data[] = {
|
|
/* Trivial sequences */
|
|
{
|
|
/* "ABba" folds to lowercase */
|
|
.str = {0x41, 0x42, 0x62, 0x61, 0x00},
|
|
.ncf = {0x61, 0x62, 0x62, 0x61, 0x00},
|
|
},
|
|
{
|
|
/* All ASCII folds to lower-case */
|
|
.str = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0.1",
|
|
.ncf = "abcdefghijklmnopqrstuvwxyz0.1",
|
|
},
|
|
{
|
|
/* LATIN SMALL LETTER SHARP S folds to
|
|
LATIN SMALL LETTER S + LATIN SMALL LETTER S */
|
|
.str = {0xc3, 0x9f, 0x00},
|
|
.ncf = {0x73, 0x73, 0x00},
|
|
},
|
|
{
|
|
/* LATIN CAPITAL LETTER A WITH RING ABOVE folds to
|
|
LATIN SMALL LETTER A + COMBINING RING ABOVE */
|
|
.str = {0xC3, 0x85, 0x00},
|
|
.ncf = {0x61, 0xcc, 0x8a, 0x00},
|
|
},
|
|
/* Introduced by UTF-8.0.0. */
|
|
/* Cherokee letters are interesting test-cases because they fold
|
|
to upper-case. Before 8.0.0, Cherokee lowercase were
|
|
undefined, thus, the folding from LC is not stable between
|
|
7.0.0 -> 8.0.0, but it is from UC. */
|
|
{
|
|
/* CHEROKEE SMALL LETTER A folds to CHEROKEE LETTER A */
|
|
.str = {0xea, 0xad, 0xb0, 0x00},
|
|
.ncf = {0xe1, 0x8e, 0xa0, 0x00},
|
|
},
|
|
{
|
|
/* CHEROKEE SMALL LETTER YE folds to CHEROKEE LETTER YE */
|
|
.str = {0xe1, 0x8f, 0xb8, 0x00},
|
|
.ncf = {0xe1, 0x8f, 0xb0, 0x00},
|
|
},
|
|
{
|
|
/* OLD HUNGARIAN CAPITAL LETTER AMB folds to
|
|
OLD HUNGARIAN SMALL LETTER AMB */
|
|
.str = {0xf0, 0x90, 0xb2, 0x83, 0x00},
|
|
.ncf = {0xf0, 0x90, 0xb3, 0x83, 0x00},
|
|
},
|
|
/* Introduced by UTF-9.0.0. */
|
|
{
|
|
/* OSAGE CAPITAL LETTER CHA folds to
|
|
OSAGE SMALL LETTER CHA */
|
|
.str = {0xf0, 0x90, 0x92, 0xb5, 0x00},
|
|
.ncf = {0xf0, 0x90, 0x93, 0x9d, 0x00},
|
|
},
|
|
{
|
|
/* LATIN CAPITAL LETTER SMALL CAPITAL I folds to
|
|
LATIN LETTER SMALL CAPITAL I */
|
|
.str = {0xea, 0x9e, 0xae, 0x00},
|
|
.ncf = {0xc9, 0xaa, 0x00},
|
|
},
|
|
/* Introduced by UTF-11.0.0. */
|
|
{
|
|
/* GEORGIAN SMALL LETTER AN folds to GEORGIAN MTAVRULI
|
|
CAPITAL LETTER AN */
|
|
.str = {0xe1, 0xb2, 0x90, 0x00},
|
|
.ncf = {0xe1, 0x83, 0x90, 0x00},
|
|
}
|
|
};
|
|
|
|
static ssize_t utf8len(const struct unicode_map *um, enum utf8_normalization n,
|
|
const char *s)
|
|
{
|
|
return utf8nlen(um, n, s, (size_t)-1);
|
|
}
|
|
|
|
static int utf8cursor(struct utf8cursor *u8c, const struct unicode_map *um,
|
|
enum utf8_normalization n, const char *s)
|
|
{
|
|
return utf8ncursor(u8c, um, n, s, (unsigned int)-1);
|
|
}
|
|
|
|
static void check_utf8_nfdi(struct unicode_map *um)
|
|
{
|
|
int i;
|
|
struct utf8cursor u8c;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(nfdi_test_data); i++) {
|
|
int len = strlen(nfdi_test_data[i].str);
|
|
int nlen = strlen(nfdi_test_data[i].dec);
|
|
int j = 0;
|
|
unsigned char c;
|
|
|
|
test((utf8len(um, UTF8_NFDI, nfdi_test_data[i].str) == nlen));
|
|
test((utf8nlen(um, UTF8_NFDI, nfdi_test_data[i].str, len) ==
|
|
nlen));
|
|
|
|
if (utf8cursor(&u8c, um, UTF8_NFDI, nfdi_test_data[i].str) < 0)
|
|
pr_err("can't create cursor\n");
|
|
|
|
while ((c = utf8byte(&u8c)) > 0) {
|
|
test_f((c == nfdi_test_data[i].dec[j]),
|
|
"Unexpected byte 0x%x should be 0x%x\n",
|
|
c, nfdi_test_data[i].dec[j]);
|
|
j++;
|
|
}
|
|
|
|
test((j == nlen));
|
|
}
|
|
}
|
|
|
|
static void check_utf8_nfdicf(struct unicode_map *um)
|
|
{
|
|
int i;
|
|
struct utf8cursor u8c;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(nfdicf_test_data); i++) {
|
|
int len = strlen(nfdicf_test_data[i].str);
|
|
int nlen = strlen(nfdicf_test_data[i].ncf);
|
|
int j = 0;
|
|
unsigned char c;
|
|
|
|
test((utf8len(um, UTF8_NFDICF, nfdicf_test_data[i].str) ==
|
|
nlen));
|
|
test((utf8nlen(um, UTF8_NFDICF, nfdicf_test_data[i].str, len) ==
|
|
nlen));
|
|
|
|
if (utf8cursor(&u8c, um, UTF8_NFDICF,
|
|
nfdicf_test_data[i].str) < 0)
|
|
pr_err("can't create cursor\n");
|
|
|
|
while ((c = utf8byte(&u8c)) > 0) {
|
|
test_f((c == nfdicf_test_data[i].ncf[j]),
|
|
"Unexpected byte 0x%x should be 0x%x\n",
|
|
c, nfdicf_test_data[i].ncf[j]);
|
|
j++;
|
|
}
|
|
|
|
test((j == nlen));
|
|
}
|
|
}
|
|
|
|
static void check_utf8_comparisons(struct unicode_map *table)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(nfdi_test_data); i++) {
|
|
const struct qstr s1 = {.name = nfdi_test_data[i].str,
|
|
.len = sizeof(nfdi_test_data[i].str)};
|
|
const struct qstr s2 = {.name = nfdi_test_data[i].dec,
|
|
.len = sizeof(nfdi_test_data[i].dec)};
|
|
|
|
test_f(!utf8_strncmp(table, &s1, &s2),
|
|
"%s %s comparison mismatch\n", s1.name, s2.name);
|
|
}
|
|
|
|
for (i = 0; i < ARRAY_SIZE(nfdicf_test_data); i++) {
|
|
const struct qstr s1 = {.name = nfdicf_test_data[i].str,
|
|
.len = sizeof(nfdicf_test_data[i].str)};
|
|
const struct qstr s2 = {.name = nfdicf_test_data[i].ncf,
|
|
.len = sizeof(nfdicf_test_data[i].ncf)};
|
|
|
|
test_f(!utf8_strncasecmp(table, &s1, &s2),
|
|
"%s %s comparison mismatch\n", s1.name, s2.name);
|
|
}
|
|
}
|
|
|
|
static void check_supported_versions(struct unicode_map *um)
|
|
{
|
|
/* Unicode 7.0.0 should be supported. */
|
|
test(utf8version_is_supported(um, UNICODE_AGE(7, 0, 0)));
|
|
|
|
/* Unicode 9.0.0 should be supported. */
|
|
test(utf8version_is_supported(um, UNICODE_AGE(9, 0, 0)));
|
|
|
|
/* Unicode 1x.0.0 (the latest version) should be supported. */
|
|
test(utf8version_is_supported(um, UTF8_LATEST));
|
|
|
|
/* Next versions don't exist. */
|
|
test(!utf8version_is_supported(um, UNICODE_AGE(13, 0, 0)));
|
|
test(!utf8version_is_supported(um, UNICODE_AGE(0, 0, 0)));
|
|
test(!utf8version_is_supported(um, UNICODE_AGE(-1, -1, -1)));
|
|
}
|
|
|
|
static int __init init_test_ucd(void)
|
|
{
|
|
struct unicode_map *um;
|
|
|
|
failed_tests = 0;
|
|
total_tests = 0;
|
|
|
|
um = utf8_load(UTF8_LATEST);
|
|
if (IS_ERR(um)) {
|
|
pr_err("%s: Unable to load utf8 table.\n", __func__);
|
|
return PTR_ERR(um);
|
|
}
|
|
|
|
check_supported_versions(um);
|
|
check_utf8_nfdi(um);
|
|
check_utf8_nfdicf(um);
|
|
check_utf8_comparisons(um);
|
|
|
|
if (!failed_tests)
|
|
pr_info("All %u tests passed\n", total_tests);
|
|
else
|
|
pr_err("%u out of %u tests failed\n", failed_tests,
|
|
total_tests);
|
|
utf8_unload(um);
|
|
return 0;
|
|
}
|
|
|
|
static void __exit exit_test_ucd(void)
|
|
{
|
|
}
|
|
|
|
module_init(init_test_ucd);
|
|
module_exit(exit_test_ucd);
|
|
|
|
MODULE_AUTHOR("Gabriel Krisman Bertazi <krisman@collabora.co.uk>");
|
|
MODULE_LICENSE("GPL");
|