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/*
Unix SMB/Netbios implementation.
Version 1.9.
Samba Web Administration Tool
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
Created by Ryo Kawahara <rkawa@lbe.co.jp>
*/
#include "includes.h"
/* #include "config.h" */
#include "webintl.h"
#if I18N_SWAT
/* constants. */
/* it is ok to make them bigger.*/
#define LN_PREFLANG_MAX 10
#define LN_LNAME_LENGTH 8+1+8
#define LN_DEFAULT_LANG I18N_DEFAULT_LANG
#define LN_LANGDESC_DEFAULT -1
#define LN_NO_AVAILABLE_LANG -1
/* ******************************************************************
* macros for debugging.
***************************************************************** */
#ifdef LN_R_NODEBUG
#else
/*
*#define LN_DEBUG_LOG "/tmp/lndebug.log"
*void ln_debug_error(const char *info, int nLine)
*{
* FILE* fp;
* fp = sys_fopen(LN_DEBUG_LOG, "a");
* fprintf(fp, "%s at %d.\n", info, nLine);
* fclose(fp);
*}
*void rassert_help(BOOL b, int l)
*{
* if(!b)
* {
* ln_debug_error("language negotiation error.", l);
* exit(1);
* }
*}
*/
#endif /* LN_R_NODEBUG */
/* ****************************************************************
LNNegotiator struct. It contains...
[aPrefLang]
the array of strings. each string is the name of
languages ("ja", "ko"...), given by web browser.
[nPrefLang]
the number of the languages in aPrefLang.
[lOriginalLang]
== "en": indicates what language the default(original) files
are written with.
**************************************************************** */
typedef char lnstring[LN_LNAME_LENGTH + 1];
#define lnstrcpy(d,s) safe_strcpy((d),(s),sizeof(lnstring)-1)
typedef struct tagLNNegotiator
{
lnstring aPrefLang[LN_PREFLANG_MAX];
int nPrefLang;
lnstring lOriginalLang;
}LNNegotiator;
/* **************************************************************
* some access functions & macros for LNNegotiator struct.
* ************************************************************ */
#define ln_getPreflangCount(pLn) ((pLn)->nPrefLang)
#define ln_getOriginalLang(pLn) ((pLn)->lOriginalLang)
#define ln_getDefaultPrefLang(pLn) ((pLn)->lDefaultPrefLang)
/* make it inline-expanded (or macro) to get better performance */
static const char* ln_getPreflang(LNNegotiator* pLn, int i)
{
rassert(i == LN_LANGDESC_DEFAULT
|| (0 <= i && i < ln_getPreflangCount(pLn)));
if(i == LN_LANGDESC_DEFAULT)
return NULL;
if(0 <= i && i < ln_getPreflangCount(pLn))
return pLn->aPrefLang[i];
return NULL;
}
/* initialize structures */
static void ln_resetln(LNNegotiator* pLn)
{
pLn->nPrefLang = 0;
/* using fixed memory.*/
}
static BOOL ln_addPreflang(LNNegotiator* pLn, const char* pLang)
{
int nPref = ln_getPreflangCount(pLn);
if(nPref >= LN_PREFLANG_MAX)
return False;
lnstrcpy(pLn->aPrefLang[nPref], pLang);
(pLn->nPrefLang)++;
return True;
}
static void ln_initln_help(LNNegotiator* pLn)
{
ln_resetln(pLn);
lnstrcpy(pLn->lOriginalLang, I18N_ORIGINAL_LANG);
/* I18N_ORIGINAL_LANG = "en" is hardcoded in
webintl.h. */
if (I18N_DEFAULT_PREF_LANG[0] != '\0')
ln_addPreflang(pLn, I18N_DEFAULT_PREF_LANG);
/* this entry is used only when web browser didn't send
ACCEPT-LANGUAGE header. */
}
/* ****************************************************************
* store acceptable languages into LNNegotiator object.
* [pstrLangarray] The arguments of "accept-language" http header,
* which is like "en-GB, es;q=0.5, ja". "q=0.5" is called quality value,
* but it is ignored now. wiled card "*" is also ignored.
***************************************************************** */
static BOOL ln_negotiate_language_help( LNNegotiator* pLn, const char* pstrLangarray )
{
char* pToken;
const char* pDelim = " \n\r\t,;";
pstring strBuffer;
rassert(pstrLangarray);
rassert(pLn);
ln_resetln(pLn);
pstrcpy(strBuffer, pstrLangarray);
pToken = strtok(strBuffer, pDelim);
while(pToken != NULL)
{
if(strncmp(pToken, "q=", strlen("q=")) == 0)
{
pToken = strtok(NULL, pDelim);
continue;
}
if(!ln_addPreflang(pLn, pToken))
break;
pToken = strtok(NULL, pDelim);
}
rassert(ln_getPreflangCount(pLn) != 0);
return (ln_getPreflangCount(pLn) != 0);
}
/* **************************************************************
initialize gettext. Before this, cgi_setup() should be done.
cgi_setup() calls ln_negotiate_language() if the user specifies
languages in web browser. Then, ln_set_pref_language() will work.
************************************************************* */
static BOOL ln_init_lang_env_help(LNNegotiator* pLn)
{
#if I18N_GETTEXT
int nLang;
nLang = ln_set_pref_language(pLn);
rstrace(getenv("LANGUAGE"));
#endif /* I18N_GETTEXT */
return True;
}
/* *****************************************************************
* This function searches for the "PrefLang" version of pFile.
* if not available, returns pFile.
* [pFile] the filename.
* [pst] the address of a struct. it will be filled with the information
* of the file.
* [pLangDesc] The address of an integer. a value which indicates the
* language of the returned value is written to the address. the value
* is used in ln_get_lang().
* [return value] address of the name of the language version of the file.
* It is static object so it will be destroyed at the time ln_get_pref_file()
* is called.
**************************************************************** */
static void ln_make_filename( pstring afname, const char* pFile, const char* pAdd )
{
#if LANG_PREFIX
/* LANG_PREFIX is already undefined, maybe removed soon */
/* maybe, foo.html.ja */
pstrcpy(afname, pFile);
pstrcat(afname, ".");
pstrcat(afname, pAdd);
#else
/* maybe, lang/ja/foo.html */
pstrcpy(afname, "lang/");
pstrcat(afname, pAdd);
pstrcat(afname, "/");
pstrcat(afname, pFile);
#endif
}
static const char* ln_get_pref_file_help(
LNNegotiator* pLn, const char* pFile,
SMB_STRUCT_STAT* pst, int* pLangDesc)
{
static pstring afname;
int i;
for(i = 0; i < ln_getPreflangCount(pLn); i++)
{
if(strcmp(ln_getPreflang(pLn, i), ln_getOriginalLang(pLn))
== 0)
break;
ln_make_filename(afname, pFile, ln_getPreflang(pLn, i));
if(file_exist(afname, pst))
{
*pLangDesc = i;
return afname;
}
}
pstrcpy(afname, pFile);
file_exist(afname, pst);
*pLangDesc = LN_LANGDESC_DEFAULT;
return afname;
}
/* *******************************************************************
* file scope variables. this variable is not locked.
* (not multithread-safe)
******************************************************************** */
static LNNegotiator lnLanguagenegotiator;
/* *******************************************************************
* interfaces to the outside of this file.
******************************************************************** */
void ln_initln(void)
{
ln_initln_help(&lnLanguagenegotiator);
}
BOOL ln_init_lang_env(void)
{
return ln_init_lang_env_help(&lnLanguagenegotiator);
}
const char* ln_get_lang(int nLangDesc)
{
return ln_getPreflang(&lnLanguagenegotiator, nLangDesc);
}
const char* ln_get_pref_file(const char* pFile,
SMB_STRUCT_STAT* pst, int* pLangDesc)
{
return ln_get_pref_file_help(
&lnLanguagenegotiator, pFile, pst, pLangDesc);
}
BOOL ln_negotiate_language(const char* pstrLangarray)
{
return ln_negotiate_language_help(
&lnLanguagenegotiator, pstrLangarray);
}
const char* ln_get_pref_file_n_o(const char* pFile)
{
SMB_STRUCT_STAT st;
int nLangDesc;
return ln_get_pref_file(pFile, &st, &nLangDesc);
}
#endif /* I18N_SWAT */
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