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Locale archives contain embedded MD5 hashes for integrity protection. glibc's locale-reading code does not check these, but localedef does generate them. It was reusing crypt/md5.c for the implementation. Rather than moving that file over to locale/, import Alexander Peslyak (aka Solar Designer)'s public domain MD5 implementation, which is simpler, and in particular, completely agnostic to endianness. The API uses different names, because Peslyak wanted to be API-compatible with openssl, but is otherwise equivalent. glibc's *tests* of the MD5 core (crypt/md5test.c and crypt/md5test-giant.c) are transferred to the locale directory, and the new implementation is verified to pass both. (The "giant" test takes 90 seconds to run on a 2018-era x86; it was in xtests in crypt and it remains in xtests after this patch.) I converted both of them to the new test driver while I was in there. crypt/md5c-test.c is a test of MD5 *password hashing*, not of the MD5 core, so it is not moved. This patch was compile-tested with both --enable-crypt and the default --disable-crypt.
108 lines
2.7 KiB
C
108 lines
2.7 KiB
C
/* Definitions for locale archive handling.
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Copyright (C) 2002-2023 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#ifndef _LOCARCHIVE_H
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#define _LOCARCHIVE_H 1
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#include <stdint.h>
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#define AR_MAGIC 0xde020109
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struct locarhead
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{
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uint32_t magic;
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/* Serial number. */
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uint32_t serial;
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/* Name hash table. */
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uint32_t namehash_offset;
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uint32_t namehash_used;
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uint32_t namehash_size;
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/* String table. */
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uint32_t string_offset;
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uint32_t string_used;
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uint32_t string_size;
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/* Table with locale records. */
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uint32_t locrectab_offset;
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uint32_t locrectab_used;
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uint32_t locrectab_size;
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/* MD5 sum hash table. */
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uint32_t sumhash_offset;
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uint32_t sumhash_used;
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uint32_t sumhash_size;
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};
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struct namehashent
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{
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/* Hash value of the name. */
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uint32_t hashval;
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/* Offset of the name in the string table. */
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uint32_t name_offset;
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/* Offset of the locale record. */
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uint32_t locrec_offset;
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};
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struct sumhashent
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{
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/* MD5 sum. */
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unsigned char sum[16];
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/* Offset of the file in the archive. */
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uint32_t file_offset;
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};
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struct locrecent
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{
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uint32_t refs; /* # of namehashent records that point here */
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struct
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{
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uint32_t offset;
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uint32_t len;
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} record[__LC_LAST];
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};
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struct locarhandle
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{
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/* Full path to the locale archive file. */
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const char *fname;
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int fd;
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void *addr;
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size_t mmaped;
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size_t reserved;
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/* If this mmap required adjustment (such as re-aligning), then this is the
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real address that was returned from mmap and thus should be passed to the
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munmap call. The addr field above is the first usable address. */
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void *mmap_base;
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/* Same as above for mmap_base vs addr, but this is the real length of the
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map rather than the usable (which is what reserved represents). */
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size_t mmap_len;
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};
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/* In memory data for the locales with their checksums. */
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typedef struct locale_category_data
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{
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off64_t size;
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void *addr;
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unsigned char sum[16];
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} locale_data_t[__LC_LAST];
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#endif /* locarchive.h */
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