This patch imports the unmodified current version of NetBSD libc. The NetBSD includes are in /nbsd_include, while the libc code itself is split between lib/nbsd_libc and common/lib/libc.
355 lines
8.1 KiB
C
355 lines
8.1 KiB
C
/* $NetBSD: citrus_esdb.c,v 1.5 2008/02/09 14:56:20 junyoung Exp $ */
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/*-
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* Copyright (c)2003 Citrus Project,
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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#if defined(LIBC_SCCS) && !defined(lint)
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__RCSID("$NetBSD: citrus_esdb.c,v 1.5 2008/02/09 14:56:20 junyoung Exp $");
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#endif /* LIBC_SCCS and not lint */
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#include "namespace.h"
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#include <assert.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include <limits.h>
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#include <paths.h>
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#include <sys/types.h>
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#include "citrus_namespace.h"
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#include "citrus_types.h"
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#include "citrus_bcs.h"
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#include "citrus_region.h"
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#include "citrus_memstream.h"
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#include "citrus_mmap.h"
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#include "citrus_lookup.h"
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#include "citrus_db.h"
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#include "citrus_db_hash.h"
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#include "citrus_esdb.h"
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#include "citrus_esdb_file.h"
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#define ESDB_DIR "esdb.dir"
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#define ESDB_ALIAS "esdb.alias"
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/*
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* _citrus_esdb_alias:
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* resolve encoding scheme name aliases.
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*/
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const char *
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_citrus_esdb_alias(const char *esname, char *buf, size_t bufsize)
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{
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return _lookup_alias(_PATH_ESDB "/" ESDB_ALIAS, esname, buf, bufsize,
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_LOOKUP_CASE_IGNORE);
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}
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/*
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* conv_esdb:
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* external representation -> local structure.
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*/
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static int
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conv_esdb(struct _citrus_esdb *esdb, struct _region *fr)
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{
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int ret;
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struct _citrus_db *db;
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uint32_t version, num_charsets, csid, i, tmp;
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char buf[100];
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const char *str;
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/* open db */
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ret = _db_open(&db, fr, _CITRUS_ESDB_MAGIC, &_db_hash_std, NULL);
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if (ret)
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goto err0;
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/* check version */
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ret = _db_lookup32_by_s(db, _CITRUS_ESDB_SYM_VERSION, &version, NULL);
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if (ret)
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goto err1;
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switch (version) {
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case 0x00000001:
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/* current version */
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/* initial version */
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break;
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default:
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ret = EFTYPE;
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goto err1;
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}
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/* get encoding/variable */
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ret = _db_lookupstr_by_s(db, _CITRUS_ESDB_SYM_ENCODING, &str, NULL);
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if (ret)
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goto err1;
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esdb->db_encname = strdup(str);
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if (esdb->db_encname == NULL) {
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ret = errno;
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goto err1;
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}
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esdb->db_len_variable = 0;
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esdb->db_variable = NULL;
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ret = _db_lookupstr_by_s(db, _CITRUS_ESDB_SYM_VARIABLE, &str, NULL);
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if (ret == 0) {
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esdb->db_len_variable = strlen(str)+1;
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esdb->db_variable = strdup(str);
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if (esdb->db_variable == NULL) {
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ret = errno;
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goto err2;
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}
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} else if (ret != ENOENT)
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goto err2;
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/* get number of charsets */
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ret = _db_lookup32_by_s(db, _CITRUS_ESDB_SYM_NUM_CHARSETS,
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&num_charsets, NULL);
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if (ret)
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goto err3;
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esdb->db_num_charsets = num_charsets;
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/* get invalid character */
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ret = _db_lookup32_by_s(db, _CITRUS_ESDB_SYM_INVALID, &tmp, NULL);
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if (ret == 0) {
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esdb->db_use_invalid = 1;
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esdb->db_invalid = tmp;
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} else if (ret == ENOENT)
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esdb->db_use_invalid = 0;
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else
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goto err3;
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/* get charsets */
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esdb->db_charsets = malloc(num_charsets * sizeof(*esdb->db_charsets));
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if (esdb->db_charsets == NULL) {
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ret = errno;
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goto err3;
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}
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for (i = 0; i < num_charsets; i++) {
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snprintf(buf, sizeof(buf),
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_CITRUS_ESDB_SYM_CSID_PREFIX "%d", i);
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ret = _db_lookup32_by_s(db, buf, &csid, NULL);
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if (ret)
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goto err4;
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esdb->db_charsets[i].ec_csid = csid;
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snprintf(buf, sizeof(buf),
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_CITRUS_ESDB_SYM_CSNAME_PREFIX "%d", i);
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ret = _db_lookupstr_by_s(db, buf, &str, NULL);
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if (ret)
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goto err4;
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esdb->db_charsets[i].ec_csname = strdup(str);
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if (esdb->db_charsets[i].ec_csname == NULL) {
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ret = errno;
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goto err4;
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}
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}
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_db_close(db);
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return 0;
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err4:
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for (; i > 0; i--)
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free(esdb->db_charsets[i - 1].ec_csname);
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free(esdb->db_charsets);
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err3:
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free(esdb->db_variable);
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err2:
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free(esdb->db_encname);
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err1:
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_db_close(db);
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if (ret == ENOENT)
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ret = EFTYPE;
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err0:
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return ret;
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}
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/*
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* _citrus_esdb_open:
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* open an ESDB file.
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*/
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int
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_citrus_esdb_open(struct _citrus_esdb *db, const char *esname)
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{
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int ret;
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const char *realname, *encfile;
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char buf1[PATH_MAX], buf2[PATH_MAX], path[PATH_MAX];
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struct _region fr;
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_DIAGASSERT(esname != NULL);
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snprintf(path, sizeof(path), "%s/%s", _PATH_ESDB, ESDB_ALIAS);
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realname = _lookup_alias(path, esname, buf1, sizeof(buf1),
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_LOOKUP_CASE_IGNORE);
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snprintf(path, sizeof(path), "%s/%s", _PATH_ESDB, ESDB_DIR);
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encfile = _lookup_simple(path, realname, buf2, sizeof(buf2),
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_LOOKUP_CASE_IGNORE);
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if (encfile==NULL)
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return ENOENT;
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/* open file */
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snprintf(path, sizeof(path), "%s/%s", _PATH_ESDB, encfile);
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ret = _map_file(&fr, path);
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if (ret)
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return ret;
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ret = conv_esdb(db, &fr);
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_unmap_file(&fr);
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return ret;
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}
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/*
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* _citrus_esdb_close:
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* free an ESDB.
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*/
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void
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_citrus_esdb_close(struct _citrus_esdb *db)
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{
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int i;
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_DIAGASSERT(db != NULL);
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_DIAGASSERT(db->db_num_charsets == 0 || db->db_charsets != NULL);
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for (i = 0; i < db->db_num_charsets; i++)
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free(db->db_charsets[i].ec_csname);
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db->db_num_charsets = 0;
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free(db->db_charsets); db->db_charsets = NULL;
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free(db->db_encname); db->db_encname = NULL;
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db->db_len_variable = 0;
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free(db->db_variable); db->db_variable = NULL;
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}
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/*
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* _citrus_esdb_free_list:
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* free the list.
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*/
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void
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_citrus_esdb_free_list(char **list, size_t num)
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{
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size_t i;
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for (i = 0; i < num; i++)
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free(list[i]);
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free(list);
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}
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/*
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* _citrus_esdb_get_list:
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* get esdb entries.
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*/
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int
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_citrus_esdb_get_list(char ***rlist, size_t *rnum)
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{
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int ret;
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struct _region key;
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size_t num;
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struct _citrus_lookup *cla, *cld;
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char **list, **q;
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char buf[PATH_MAX];
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num = 0;
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ret = _lookup_seq_open(&cla, _PATH_ESDB "/" ESDB_ALIAS,
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_LOOKUP_CASE_IGNORE);
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if (ret)
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goto quit0;
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ret = _lookup_seq_open(&cld, _PATH_ESDB "/" ESDB_DIR,
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_LOOKUP_CASE_IGNORE);
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if (ret)
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goto quit1;
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/* count number of entries */
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num = _lookup_get_num_entries(cla) + _lookup_get_num_entries(cld);
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_lookup_seq_rewind(cla);
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_lookup_seq_rewind(cld);
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/* allocate list pointer space */
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list = malloc(num * sizeof(char *));
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num = 0;
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if (list == NULL) {
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ret = errno;
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goto quit3;
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}
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/* get alias entries */
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while ((ret = _lookup_seq_next(cla, &key, NULL)) == 0) {
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snprintf(buf, sizeof(buf), "%.*s",
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(int)_region_size(&key),
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(const char *)_region_head(&key));
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_bcs_convert_to_lower(buf);
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list[num] = strdup(buf);
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if (list[num] == NULL) {
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ret = errno;
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goto quit3;
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}
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num++;
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}
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if (ret != ENOENT)
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goto quit3;
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/* get dir entries */
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while ((ret = _lookup_seq_next(cld, &key, NULL)) == 0) {
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/* check duplicated entry */
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snprintf(buf, sizeof(buf), "%.*s",
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(int)_region_size(&key),
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(const char *)_region_head(&key));
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_bcs_convert_to_lower(buf);
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ret = _lookup_seq_lookup(cla, buf, NULL);
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if (ret) {
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if (ret != ENOENT)
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goto quit3;
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/* not duplicated */
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list[num] = strdup(buf);
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if (list[num] == NULL) {
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ret = errno;
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goto quit3;
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}
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num++;
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}
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}
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if (ret != ENOENT)
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goto quit3;
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ret = 0;
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q = realloc(list, num * sizeof(char *));
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if (!q) {
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ret = ENOMEM;
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goto quit3;
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}
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list = q;
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*rlist = list;
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*rnum = num;
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quit3:
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if (ret)
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_citrus_esdb_free_list(list, num);
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_lookup_seq_close(cld);
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quit1:
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_lookup_seq_close(cla);
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quit0:
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return ret;
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}
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