9014a6e40c
Mainly focus on files that use BSD 2-Clause license, however the tool I was using mis-identified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts.
369 lines
8.5 KiB
C
369 lines
8.5 KiB
C
/* $FreeBSD$ */
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/* $NetBSD: citrus_esdb.c,v 1.5 2008/02/09 14:56:20 junyoung Exp $ */
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/*-
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* SPDX-License-Identifier: BSD-2-Clause
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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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#include <sys/types.h>
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#include <assert.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 <stdbool.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 "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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struct _citrus_db *db;
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const char *str;
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char buf[100];
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uint32_t csid, i, num_charsets, tmp, version;
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int ret;
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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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struct _region fr;
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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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int ret;
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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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for (int 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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for (size_t 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, bool sorted)
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{
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struct _citrus_lookup *cla, *cld;
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struct _region key, data;
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char **list, **q;
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char buf[PATH_MAX];
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size_t num;
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int ret;
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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, &data)) == 0) {
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/* XXX: sorted? */
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snprintf(buf, sizeof(buf), "%.*s/%.*s",
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(int)_region_size(&data),
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(const char *)_region_head(&data),
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(int)_region_size(&key),
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(const char *)_region_head(&key));
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_bcs_convert_to_upper(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, &data)) == 0) {
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if (!sorted)
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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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else {
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/* check duplicated entry */
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char *p;
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char buf1[PATH_MAX];
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snprintf(buf1, sizeof(buf1), "%.*s",
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(int)_region_size(&data),
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(const char *)_region_head(&data));
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if ((p = strchr(buf1, '/')) != NULL)
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memmove(buf1, p + 1, strlen(p) - 1);
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if ((p = strstr(buf1, ".esdb")) != NULL)
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*p = '\0';
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snprintf(buf, sizeof(buf), "%s/%.*s", buf1,
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(int)_region_size(&key),
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(const char *)_region_head(&key));
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}
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_bcs_convert_to_upper(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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/* XXX: why reallocing the list space posteriorly?
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shouldn't be done earlier? */
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q = reallocarray(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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