656 lines
15 KiB
C
656 lines
15 KiB
C
/* $NetBSD: gettext.c,v 1.18 2004/01/18 08:40:40 yamt Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 2000, 2001 Citrus Project,
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* $Citrus: xpg4dl/FreeBSD/lib/libintl/gettext.c,v 1.31 2001/09/27 15:18:45 yamt Exp $
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__RCSID("$NetBSD: gettext.c,v 1.18 2004/01/18 08:40:40 yamt Exp $");
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/stat.h>
|
|
#include <sys/mman.h>
|
|
#include <sys/uio.h>
|
|
|
|
#include <fcntl.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
#include <string.h>
|
|
#if 0
|
|
#include <util.h>
|
|
#endif
|
|
#include <libintl.h>
|
|
#include <locale.h>
|
|
#include "libintl_local.h"
|
|
#include "pathnames.h"
|
|
|
|
static const char *lookup_category __P((int));
|
|
static const char *split_locale __P((const char *));
|
|
static const char *lookup_mofile __P((char *, size_t, const char *,
|
|
const char *, const char *, const char *, struct domainbinding *));
|
|
static u_int32_t flip __P((u_int32_t, u_int32_t));
|
|
static int validate __P((void *, struct mohandle *));
|
|
static int mapit __P((const char *, struct domainbinding *));
|
|
static int unmapit __P((struct domainbinding *));
|
|
static const char *lookup_hash __P((const char *, struct domainbinding *));
|
|
static const char *lookup_bsearch __P((const char *, struct domainbinding *));
|
|
static const char *lookup __P((const char *, struct domainbinding *));
|
|
static const char *get_lang_env __P((const char *));
|
|
|
|
/*
|
|
* shortcut functions. the main implementation resides in dcngettext().
|
|
*/
|
|
char *
|
|
gettext(msgid)
|
|
const char *msgid;
|
|
{
|
|
|
|
return dcngettext(NULL, msgid, NULL, 1UL, LC_MESSAGES);
|
|
}
|
|
|
|
char *
|
|
dgettext(domainname, msgid)
|
|
const char *domainname;
|
|
const char *msgid;
|
|
{
|
|
|
|
return dcngettext(domainname, msgid, NULL, 1UL, LC_MESSAGES);
|
|
}
|
|
|
|
char *
|
|
dcgettext(domainname, msgid, category)
|
|
const char *domainname;
|
|
const char *msgid;
|
|
int category;
|
|
{
|
|
|
|
return dcngettext(domainname, msgid, NULL, 1UL, category);
|
|
}
|
|
|
|
char *
|
|
ngettext(msgid1, msgid2, n)
|
|
const char *msgid1;
|
|
const char *msgid2;
|
|
unsigned long int n;
|
|
{
|
|
|
|
return dcngettext(NULL, msgid1, msgid2, n, LC_MESSAGES);
|
|
}
|
|
|
|
char *
|
|
dngettext(domainname, msgid1, msgid2, n)
|
|
const char *domainname;
|
|
const char *msgid1;
|
|
const char *msgid2;
|
|
unsigned long int n;
|
|
{
|
|
|
|
return dcngettext(domainname, msgid1, msgid2, n, LC_MESSAGES);
|
|
}
|
|
|
|
/*
|
|
* dcngettext() -
|
|
* lookup internationalized message on database locale/category/domainname
|
|
* (like ja_JP.eucJP/LC_MESSAGES/domainname).
|
|
* if n equals to 1, internationalized message will be looked up for msgid1.
|
|
* otherwise, message will be looked up for msgid2.
|
|
* if the lookup fails, the function will return msgid1 or msgid2 as is.
|
|
*
|
|
* Even though the return type is "char *", caller should not rewrite the
|
|
* region pointed to by the return value (should be "const char *", but can't
|
|
* change it for compatibility with other implementations).
|
|
*
|
|
* by default (if domainname == NULL), domainname is taken from the value set
|
|
* by textdomain(). usually name of the application (like "ls") is used as
|
|
* domainname. category is usually LC_MESSAGES.
|
|
*
|
|
* the code reads in *.mo files generated by GNU gettext. *.mo is a host-
|
|
* endian encoded file. both endians are supported here, as the files are in
|
|
* /usr/share/locale! (or we should move those files into /usr/libdata)
|
|
*/
|
|
|
|
static const char *
|
|
lookup_category(category)
|
|
int category;
|
|
{
|
|
|
|
switch (category) {
|
|
case LC_COLLATE: return "LC_COLLATE";
|
|
case LC_CTYPE: return "LC_CTYPE";
|
|
case LC_MONETARY: return "LC_MONETARY";
|
|
case LC_NUMERIC: return "LC_NUMERIC";
|
|
case LC_TIME: return "LC_TIME";
|
|
case LC_MESSAGES: return "LC_MESSAGES";
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
/*
|
|
* XPG syntax: language[_territory[.codeset]][@modifier]
|
|
* XXX boundary check on "result" is lacking
|
|
*/
|
|
static const char *
|
|
split_locale(lname)
|
|
const char *lname;
|
|
{
|
|
char buf[BUFSIZ], tmp[BUFSIZ];
|
|
char *l, *t, *c, *m;
|
|
static char result[BUFSIZ];
|
|
|
|
memset(result, 0, sizeof(result));
|
|
|
|
if (strlen(lname) + 1 > sizeof(buf)) {
|
|
fail:
|
|
return lname;
|
|
}
|
|
|
|
strlcpy(buf, lname, sizeof(buf));
|
|
m = strrchr(buf, '@');
|
|
if (m)
|
|
*m++ = '\0';
|
|
c = strrchr(buf, '.');
|
|
if (c)
|
|
*c++ = '\0';
|
|
t = strrchr(buf, '_');
|
|
if (t)
|
|
*t++ = '\0';
|
|
l = buf;
|
|
if (strlen(l) == 0)
|
|
goto fail;
|
|
if (c && !t)
|
|
goto fail;
|
|
|
|
if (m) {
|
|
if (t) {
|
|
if (c) {
|
|
snprintf(tmp, sizeof(tmp), "%s_%s.%s@%s",
|
|
l, t, c, m);
|
|
strlcat(result, tmp, sizeof(result));
|
|
strlcat(result, ":", sizeof(result));
|
|
}
|
|
snprintf(tmp, sizeof(tmp), "%s_%s@%s", l, t, m);
|
|
strlcat(result, tmp, sizeof(result));
|
|
strlcat(result, ":", sizeof(result));
|
|
}
|
|
snprintf(tmp, sizeof(tmp), "%s@%s", l, m);
|
|
strlcat(result, tmp, sizeof(result));
|
|
strlcat(result, ":", sizeof(result));
|
|
}
|
|
if (t) {
|
|
if (c) {
|
|
snprintf(tmp, sizeof(tmp), "%s_%s.%s", l, t, c);
|
|
strlcat(result, tmp, sizeof(result));
|
|
strlcat(result, ":", sizeof(result));
|
|
}
|
|
snprintf(tmp, sizeof(tmp), "%s_%s", l, t);
|
|
strlcat(result, tmp, sizeof(result));
|
|
strlcat(result, ":", sizeof(result));
|
|
}
|
|
strlcat(result, l, sizeof(result));
|
|
|
|
return result;
|
|
}
|
|
|
|
static const char *
|
|
lookup_mofile(buf, len, dir, lpath, category, domainname, db)
|
|
char *buf;
|
|
size_t len;
|
|
const char *dir;
|
|
const char *lpath; /* list of locales to be tried */
|
|
const char *category;
|
|
const char *domainname;
|
|
struct domainbinding *db;
|
|
{
|
|
struct stat st;
|
|
char *p, *q;
|
|
char lpath_tmp[BUFSIZ];
|
|
|
|
strlcpy(lpath_tmp, lpath, sizeof(lpath_tmp));
|
|
q = lpath_tmp;
|
|
/* CONSTCOND */
|
|
while (1) {
|
|
p = strsep(&q, ":");
|
|
if (!p)
|
|
break;
|
|
if (!*p)
|
|
continue;
|
|
|
|
/* don't mess with default locales */
|
|
if (strcmp(p, "C") == 0 || strcmp(p, "POSIX") == 0)
|
|
return NULL;
|
|
|
|
/* validate pathname */
|
|
if (strchr(p, '/') || strchr(category, '/'))
|
|
continue;
|
|
#if 1 /*?*/
|
|
if (strchr(domainname, '/'))
|
|
continue;
|
|
#endif
|
|
|
|
snprintf(buf, len, "%s/%s/%s/%s.mo", dir, p,
|
|
category, domainname);
|
|
if (stat(buf, &st) < 0)
|
|
continue;
|
|
if ((st.st_mode & S_IFMT) != S_IFREG)
|
|
continue;
|
|
|
|
if (mapit(buf, db) == 0)
|
|
return buf;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static u_int32_t
|
|
flip(v, magic)
|
|
u_int32_t v;
|
|
u_int32_t magic;
|
|
{
|
|
|
|
if (magic == MO_MAGIC)
|
|
return v;
|
|
else if (magic == MO_MAGIC_SWAPPED) {
|
|
v = ((v >> 24) & 0xff) | ((v >> 8) & 0xff00) |
|
|
((v << 8) & 0xff0000) | ((v << 24) & 0xff000000);
|
|
return v;
|
|
} else {
|
|
abort();
|
|
/*NOTREACHED*/
|
|
}
|
|
}
|
|
|
|
static int
|
|
validate(arg, mohandle)
|
|
void *arg;
|
|
struct mohandle *mohandle;
|
|
{
|
|
char *p;
|
|
|
|
p = (char *)arg;
|
|
if (p < (char *)mohandle->addr ||
|
|
p > (char *)mohandle->addr + mohandle->len)
|
|
return 0;
|
|
else
|
|
return 1;
|
|
}
|
|
|
|
int
|
|
mapit(path, db)
|
|
const char *path;
|
|
struct domainbinding *db;
|
|
{
|
|
int fd;
|
|
struct stat st;
|
|
char *base;
|
|
u_int32_t magic, revision;
|
|
struct moentry *otable, *ttable;
|
|
struct moentry_h *p;
|
|
struct mo *mo;
|
|
size_t l;
|
|
int i;
|
|
char *v;
|
|
struct mohandle *mohandle = &db->mohandle;
|
|
|
|
if (mohandle->addr && mohandle->addr != MAP_FAILED &&
|
|
mohandle->mo.mo_magic)
|
|
return 0; /*already opened*/
|
|
|
|
unmapit(db);
|
|
|
|
#if 0
|
|
if (secure_path(path) != 0)
|
|
goto fail;
|
|
#endif
|
|
if (stat(path, &st) < 0)
|
|
goto fail;
|
|
if ((st.st_mode & S_IFMT) != S_IFREG || st.st_size > GETTEXT_MMAP_MAX)
|
|
goto fail;
|
|
fd = open(path, O_RDONLY);
|
|
if (fd < 0)
|
|
goto fail;
|
|
if (read(fd, &magic, sizeof(magic)) != sizeof(magic) ||
|
|
(magic != MO_MAGIC && magic != MO_MAGIC_SWAPPED)) {
|
|
close(fd);
|
|
goto fail;
|
|
}
|
|
if (read(fd, &revision, sizeof(revision)) != sizeof(revision) ||
|
|
flip(revision, magic) != MO_REVISION) {
|
|
close(fd);
|
|
goto fail;
|
|
}
|
|
mohandle->addr = mmap(NULL, (size_t)st.st_size, PROT_READ,
|
|
MAP_FILE | MAP_SHARED, fd, (off_t)0);
|
|
if (!mohandle->addr || mohandle->addr == MAP_FAILED) {
|
|
close(fd);
|
|
goto fail;
|
|
}
|
|
close(fd);
|
|
mohandle->len = (size_t)st.st_size;
|
|
|
|
base = mohandle->addr;
|
|
mo = (struct mo *)mohandle->addr;
|
|
|
|
/* flip endian. do not flip magic number! */
|
|
mohandle->mo.mo_magic = mo->mo_magic;
|
|
mohandle->mo.mo_revision = flip(mo->mo_revision, magic);
|
|
mohandle->mo.mo_nstring = flip(mo->mo_nstring, magic);
|
|
|
|
/* validate otable/ttable */
|
|
otable = (struct moentry *)(base + flip(mo->mo_otable, magic));
|
|
ttable = (struct moentry *)(base + flip(mo->mo_ttable, magic));
|
|
if (!validate(otable, mohandle) ||
|
|
!validate(&otable[mohandle->mo.mo_nstring], mohandle)) {
|
|
unmapit(db);
|
|
goto fail;
|
|
}
|
|
if (!validate(ttable, mohandle) ||
|
|
!validate(&ttable[mohandle->mo.mo_nstring], mohandle)) {
|
|
unmapit(db);
|
|
goto fail;
|
|
}
|
|
|
|
/* allocate [ot]table, and convert to normal pointer representation. */
|
|
l = sizeof(struct moentry_h) * mohandle->mo.mo_nstring;
|
|
mohandle->mo.mo_otable = (struct moentry_h *)malloc(l);
|
|
if (!mohandle->mo.mo_otable) {
|
|
unmapit(db);
|
|
goto fail;
|
|
}
|
|
mohandle->mo.mo_ttable = (struct moentry_h *)malloc(l);
|
|
if (!mohandle->mo.mo_ttable) {
|
|
unmapit(db);
|
|
goto fail;
|
|
}
|
|
p = mohandle->mo.mo_otable;
|
|
for (i = 0; i < mohandle->mo.mo_nstring; i++) {
|
|
p[i].len = flip(otable[i].len, magic);
|
|
p[i].off = base + flip(otable[i].off, magic);
|
|
|
|
if (!validate(p[i].off, mohandle) ||
|
|
!validate(p[i].off + p[i].len + 1, mohandle)) {
|
|
unmapit(db);
|
|
goto fail;
|
|
}
|
|
}
|
|
p = mohandle->mo.mo_ttable;
|
|
for (i = 0; i < mohandle->mo.mo_nstring; i++) {
|
|
p[i].len = flip(ttable[i].len, magic);
|
|
p[i].off = base + flip(ttable[i].off, magic);
|
|
|
|
if (!validate(p[i].off, mohandle) ||
|
|
!validate(p[i].off + p[i].len + 1, mohandle)) {
|
|
unmapit(db);
|
|
goto fail;
|
|
}
|
|
}
|
|
|
|
/* grab MIME-header and charset field */
|
|
mohandle->mo.mo_header = lookup("", db);
|
|
if (mohandle->mo.mo_header)
|
|
v = strstr(mohandle->mo.mo_header, "charset=");
|
|
else
|
|
v = NULL;
|
|
if (v) {
|
|
mohandle->mo.mo_charset = strdup(v + 8);
|
|
if (!mohandle->mo.mo_charset)
|
|
goto fail;
|
|
v = strchr(mohandle->mo.mo_charset, '\n');
|
|
if (v)
|
|
*v = '\0';
|
|
}
|
|
|
|
/*
|
|
* XXX check charset, reject it if we are unable to support the charset
|
|
* with the current locale.
|
|
* for example, if we are using euc-jp locale and we are looking at
|
|
* *.mo file encoded by euc-kr (charset=euc-kr), we should reject
|
|
* the *.mo file as we cannot support it.
|
|
*/
|
|
|
|
return 0;
|
|
|
|
fail:
|
|
return -1;
|
|
}
|
|
|
|
static int
|
|
unmapit(db)
|
|
struct domainbinding *db;
|
|
{
|
|
struct mohandle *mohandle = &db->mohandle;
|
|
|
|
/* unmap if there's already mapped region */
|
|
if (mohandle->addr && mohandle->addr != MAP_FAILED)
|
|
munmap(mohandle->addr, mohandle->len);
|
|
mohandle->addr = NULL;
|
|
if (mohandle->mo.mo_otable)
|
|
free(mohandle->mo.mo_otable);
|
|
if (mohandle->mo.mo_ttable)
|
|
free(mohandle->mo.mo_ttable);
|
|
if (mohandle->mo.mo_charset)
|
|
free(mohandle->mo.mo_charset);
|
|
memset(&mohandle->mo, 0, sizeof(mohandle->mo));
|
|
return 0;
|
|
}
|
|
|
|
/* ARGSUSED */
|
|
static const char *
|
|
lookup_hash(msgid, db)
|
|
const char *msgid;
|
|
struct domainbinding *db;
|
|
{
|
|
|
|
/*
|
|
* XXX should try a hashed lookup here, but to do so, we need to
|
|
* look inside the GPL'ed *.c and re-implement...
|
|
*/
|
|
return NULL;
|
|
}
|
|
|
|
static const char *
|
|
lookup_bsearch(msgid, db)
|
|
const char *msgid;
|
|
struct domainbinding *db;
|
|
{
|
|
int top, bottom, middle, omiddle;
|
|
int n;
|
|
struct mohandle *mohandle = &db->mohandle;
|
|
|
|
top = 0;
|
|
bottom = mohandle->mo.mo_nstring;
|
|
omiddle = -1;
|
|
/* CONSTCOND */
|
|
while (1) {
|
|
if (top > bottom)
|
|
break;
|
|
middle = (top + bottom) / 2;
|
|
/* avoid possible infinite loop, when the data is not sorted */
|
|
if (omiddle == middle)
|
|
break;
|
|
if (middle < 0 || middle >= mohandle->mo.mo_nstring)
|
|
break;
|
|
|
|
n = strcmp(msgid, mohandle->mo.mo_otable[middle].off);
|
|
if (n == 0)
|
|
return (const char *)mohandle->mo.mo_ttable[middle].off;
|
|
else if (n < 0)
|
|
bottom = middle;
|
|
else
|
|
top = middle;
|
|
omiddle = middle;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static const char *
|
|
lookup(msgid, db)
|
|
const char *msgid;
|
|
struct domainbinding *db;
|
|
{
|
|
const char *v;
|
|
|
|
v = lookup_hash(msgid, db);
|
|
if (v)
|
|
return v;
|
|
|
|
return lookup_bsearch(msgid, db);
|
|
}
|
|
|
|
static const char *
|
|
get_lang_env(const char *category_name)
|
|
{
|
|
const char *lang;
|
|
|
|
/* 1. see LANGUAGE variable first. */
|
|
lang = getenv("LANGUAGE");
|
|
if (lang)
|
|
return lang;
|
|
|
|
/* 2. if LANGUAGE isn't set, see LC_ALL, LC_xxx, LANG. */
|
|
lang = getenv("LC_ALL");
|
|
if (!lang)
|
|
lang = getenv(category_name);
|
|
if (!lang)
|
|
lang = getenv("LANG");
|
|
|
|
if (!lang)
|
|
return 0; /* error */
|
|
|
|
return split_locale(lang);
|
|
}
|
|
|
|
char *
|
|
dcngettext(domainname, msgid1, msgid2, n, category)
|
|
const char *domainname;
|
|
const char *msgid1;
|
|
const char *msgid2;
|
|
unsigned long int n;
|
|
int category;
|
|
{
|
|
const char *msgid;
|
|
char path[PATH_MAX];
|
|
const char *lpath;
|
|
static char olpath[PATH_MAX];
|
|
const char *cname = NULL;
|
|
const char *v;
|
|
static char *ocname = NULL;
|
|
static char *odomainname = NULL;
|
|
struct domainbinding *db;
|
|
|
|
msgid = (n == 1) ? msgid1 : msgid2;
|
|
if (msgid == NULL)
|
|
return NULL;
|
|
|
|
if (!domainname)
|
|
domainname = __current_domainname;
|
|
cname = lookup_category(category);
|
|
if (!domainname || !cname)
|
|
goto fail;
|
|
|
|
lpath = get_lang_env(cname);
|
|
if (!lpath)
|
|
goto fail;
|
|
|
|
for (db = __bindings; db; db = db->next)
|
|
if (strcmp(db->domainname, domainname) == 0)
|
|
break;
|
|
if (!db) {
|
|
if (!bindtextdomain(domainname, _PATH_TEXTDOMAIN))
|
|
goto fail;
|
|
db = __bindings;
|
|
}
|
|
|
|
/* resolve relative path */
|
|
/* XXX not necessary? */
|
|
if (db->path[0] != '/') {
|
|
char buf[PATH_MAX];
|
|
|
|
if (getcwd(buf, sizeof(buf)) == 0)
|
|
goto fail;
|
|
if (strlcat(buf, "/", sizeof(buf)) >= sizeof(buf))
|
|
goto fail;
|
|
if (strlcat(buf, db->path, sizeof(buf)) >= sizeof(buf))
|
|
goto fail;
|
|
strlcpy(db->path, buf, sizeof(db->path));
|
|
}
|
|
|
|
/* don't bother looking it up if the values are the same */
|
|
if (odomainname && strcmp(domainname, odomainname) == 0 &&
|
|
ocname && strcmp(cname, ocname) == 0 && strcmp(lpath, olpath) == 0 &&
|
|
db->mohandle.mo.mo_magic)
|
|
goto found;
|
|
|
|
/* try to find appropriate file, from $LANGUAGE */
|
|
if (lookup_mofile(path, sizeof(path), db->path, lpath, cname,
|
|
domainname, db) == NULL)
|
|
goto fail;
|
|
|
|
if (odomainname)
|
|
free(odomainname);
|
|
if (ocname)
|
|
free(ocname);
|
|
odomainname = strdup(domainname);
|
|
ocname = strdup(cname);
|
|
if (!odomainname || !ocname) {
|
|
if (odomainname)
|
|
free(odomainname);
|
|
if (ocname)
|
|
free(ocname);
|
|
odomainname = ocname = NULL;
|
|
}
|
|
else
|
|
strlcpy(olpath, lpath, sizeof(olpath));
|
|
|
|
found:
|
|
v = lookup(msgid, db);
|
|
if (v) {
|
|
/*
|
|
* convert the translated message's encoding.
|
|
*
|
|
* special case:
|
|
* a result of gettext("") shouldn't need any conversion.
|
|
*/
|
|
if (msgid[0])
|
|
v = __gettext_iconv(v, db);
|
|
|
|
/*
|
|
* Given the amount of printf-format security issues, it may
|
|
* be a good idea to validate if the original msgid and the
|
|
* translated message format string carry the same printf-like
|
|
* format identifiers.
|
|
*/
|
|
|
|
msgid = v;
|
|
}
|
|
|
|
fail:
|
|
/* LINTED const cast */
|
|
return (char *)msgid;
|
|
}
|