--- /dev/null
+/*
+ * Copyright (c) 1996-2012 by the citadel.org team
+ *
+ * This program is open source software. You can redistribute it and/or
+ * modify it under the terms of the GNU General Public License version 3.
+ *
+ * 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.
+ */
+
+#include "webcit.h"
+#include "webserver.h"
+#define SEARCH_LANG 20 /* how many langs should we parse? */
+
+#ifdef ENABLE_NLS
+/* actual supported locales */
+const char *AvailLang[] = {
+ "en_US",
+ "ar_AE",
+ "bg_BG",
+ "cs_CZ",
+ "en_US",
+ "da_DK",
+ "de_DE",
+ "el_GR",
+ "en_GB",
+ "es_ES",
+ "et_EE",
+ "fi_FI",
+ "fr_FR",
+ "hu_HU",
+ "it_IT",
+ "ko_KO",
+ "nl_NL",
+ "pl_PL",
+ "pt_BR",
+ "ru_RU",
+ "zh_CN",
+ "he_IL",
+ "kk_KK",
+ "ro_RO",
+ "sl_SL",
+ "tr_TR",
+ ""
+};
+
+const char **AvailLangLoaded;
+long nLocalesLoaded = 0;
+
+#ifdef HAVE_USELOCALE
+locale_t *wc_locales; /* here we keep the parsed stuff */
+#endif
+
+/* Keep information about one locale */
+typedef struct _lang_pref {
+ char lang[16]; /* the language locale string */
+ char region[16]; /* the region locale string */
+ long priority; /* which priority does it have */
+ int availability; /* do we know it? */
+ int selectedlang; /* is this the selected language? */
+} LangStruct;
+
+/* parse browser locale header
+ *
+ * seems as most browsers just do a one after comma value even if more than 10 locales are available. Sample strings:
+ * opera:
+ * Accept-Language: sq;q=1.0,de;q=0.9,as;q=0.8,ar;q=0.7,bn;q=0.6,zh-cn;q=0.5,kn;q=0.4,ch;q=0.3,fo;q=0.2,gn;q=0.1,ce;q=0.1,ie;q=0.1
+ * Firefox
+ * Accept-Language: 'de-de,en-us;q=0.7,en;q=0.3'
+ * Accept-Language: de,en-ph;q=0.8,en-us;q=0.5,de-at;q=0.3
+ * Accept-Language: de,en-us;q=0.9,it;q=0.9,de-de;q=0.8,en-ph;q=0.7,de-at;q=0.7,zh-cn;q=0.6,cy;q=0.5,ar-om;q=0.5,en-tt;q=0.4,xh;q=0.3,nl-be;q=0.3,cs;q=0.2,sv;q=0.1,tk;q=0.1
+ */
+
+void httplang_to_locale(StrBuf *LocaleString, wcsession *sess)
+{
+ LangStruct wanted_locales[SEARCH_LANG];
+ LangStruct *ls;
+
+ long len;
+ int i = 0;
+ int j = 0;
+ /* size_t len = strlen(LocaleString); */
+ long prio;
+ int av;
+ int nBest;
+ int nParts;
+ StrBuf *Buf = NULL;
+ StrBuf *SBuf = NULL;
+
+ nParts = StrBufNum_tokens(LocaleString, ',');
+ for (i=0; ((i<nParts) && (i < SEARCH_LANG)); i++)
+ {
+ char lbuf[32];
+ int blen;
+
+ if (Buf == NULL) {
+ Buf = NewStrBuf();
+ SBuf = NewStrBuf();
+ }
+ else {
+ FlushStrBuf(Buf);
+ FlushStrBuf(SBuf);
+ }
+
+ ls = &wanted_locales[i];
+
+ StrBufExtract_token(Buf, LocaleString, i, ',');
+ /* we are searching, if this list item has something like ;q=n*/
+ if (StrBufNum_tokens(Buf, '=') > 1) {
+ int sbuflen, k;
+ StrBufExtract_token(SBuf, Buf, 1, '=');
+ sbuflen = StrLength(SBuf);
+ for (k = 0; k < sbuflen; k++) {
+ if (ChrPtr(SBuf)[k] == '.') {
+ StrBufPeek(SBuf, NULL, k, '0');
+ }
+ }
+ ls->priority = StrTol(SBuf);
+ }
+ else {
+ ls->priority = 1000;
+ }
+
+ /* get the locale part */
+ StrBufExtract_token(SBuf, Buf, 0, ';');
+
+ /* get the lang part, which should be allways there */
+ extract_token(ls->lang,
+ ChrPtr(SBuf),
+ 0, '-',
+ sizeof(ls->lang));
+
+ /* get the area code if any. */
+ if (StrBufNum_tokens(SBuf, '-') > 1) {
+ extract_token(ls->region,
+ ChrPtr(SBuf),
+ 1, '-',
+ sizeof(ls->region)
+ );
+ }
+ else { /* no ara code? use lang code */
+ blen = strlen(ls->lang);
+ memcpy(ls->region, ls->lang, blen);
+ ls->region[blen] = '\0';
+ }
+
+ /* area codes are uppercase */
+ blen = strlen(&ls->region[0]);
+ for (j = 0; j < blen; j++)
+ {
+ int chars;
+ chars = toupper(ls->region[j]);
+ ls->region[j] = (char)chars; /* todo ? */
+ }
+ snprintf(lbuf,
+ sizeof(lbuf),
+ "%s_%s",
+ ls->lang,
+ ls->region);
+
+ /* check if we have this lang */
+ ls->availability = 1;
+ ls->selectedlang = -1;
+ len = strlen(ls->lang);
+ for (j = 0; j < nLocalesLoaded; j++) {
+ int result;
+ /* match against the LANG part */
+ result = strncasecmp(ls->lang, AvailLangLoaded[j], len);
+ if ((result == 0) && (result < ls->availability)){
+ ls->availability = result;
+ ls->selectedlang = j;
+ }
+ /* match against lang and locale */
+ if (0 == strcasecmp(lbuf, AvailLangLoaded[j])){
+ ls->availability = 0;
+ ls->selectedlang = j;
+ j = nLocalesLoaded;
+ }
+ }
+ }
+
+ prio = 0;
+ av = -1000;
+ nBest = -1;
+ for (i = 0; ((i < nParts) && (i<SEARCH_LANG)); i++) {
+ ls = &wanted_locales[i];
+ if ( (ls->availability <= 0)
+ && (av < ls->availability)
+ && (prio < ls->priority)
+ && (ls->selectedlang != -1)
+ ) {
+ nBest = ls->selectedlang;
+ av = ls->availability;
+ prio = ls->priority;
+ }
+ }
+ if (nBest == -1) {
+ /* fall back to C */
+ nBest=0;
+ }
+ sess->selected_language = nBest;
+ syslog(LOG_DEBUG, "language found: %s", AvailLangLoaded[sess->selected_language]);
+ FreeStrBuf(&Buf);
+ FreeStrBuf(&SBuf);
+}
+
+
+/*
+ * show the language chooser on the login dialog
+ * depending on the browser locale change the sequence of the
+ * language chooser.
+ */
+void tmplput_offer_languages(StrBuf *Target, WCTemplputParams *TP)
+{
+ int i;
+#ifndef HAVE_USELOCALE
+ char *Lang = getenv("LANG");
+
+ if (Lang == NULL)
+ Lang = "C";
+#endif
+
+ if (nLocalesLoaded == 1) {
+ wc_printf("<p>%s</p>", AvailLangLoaded[0]);
+ return;
+ }
+
+ wc_printf("<select name=\"language\" id=\"lname\" size=\"1\" onChange=\"switch_to_lang($('lname').value);\">\n");
+
+ for (i=0; i < nLocalesLoaded; ++i) {
+#ifndef HAVE_USELOCALE
+ if (strcmp(AvailLangLoaded[i], Lang) == 0)
+#endif
+ wc_printf("<option %s value=%s>%s</option>\n",
+ ((WC->selected_language == i) ? "selected" : ""),
+ AvailLangLoaded[i],
+ AvailLangLoaded[i]
+ );
+ }
+
+ wc_printf("</select>\n");
+}
+
+/*
+ * Set the selected language for this session.
+ */
+void set_selected_language(const char *lang) {
+#ifdef HAVE_USELOCALE
+ int i;
+ for (i = 0; i<nLocalesLoaded; ++i) {
+ if (!strcasecmp(lang, AvailLangLoaded[i])) {
+ WC->selected_language = i;
+ break;
+ }
+ }
+#endif
+}
+
+/*
+ * Activate the selected language for this session.
+ */
+void go_selected_language(void) {
+#ifdef HAVE_USELOCALE
+ wcsession *WCC = WC;
+ if (WCC->selected_language < 0)
+ {
+ httplang_to_locale(WCC->Hdr->HR.browser_language, WCC);
+ if (WCC->selected_language < 0)
+ return;
+ }
+ uselocale(wc_locales[WCC->selected_language]); /* switch locales */
+ textdomain(textdomain(NULL)); /* clear the cache */
+#else
+ char *language;
+
+ language = getenv("LANG");
+ setlocale(LC_MESSAGES, language);
+#endif
+}
+
+/*
+ * Deactivate the selected language for this session.
+ */
+void stop_selected_language(void) {
+#ifdef HAVE_USELOCALE
+ uselocale(LC_GLOBAL_LOCALE); /* switch locales */
+ textdomain(textdomain(NULL)); /* clear the cache */
+#endif
+}
+
+#ifdef HAVE_USELOCALE
+ locale_t Empty_Locale;
+#endif
+
+/*
+ * Create a locale_t for each available language
+ */
+void initialize_locales(void) {
+ int nLocales;
+ int i;
+ char buf[32];
+ char *language = NULL;
+
+ nLocales = 0;
+ while (!IsEmptyStr(AvailLang[nLocales]))
+ nLocales++;
+
+ language = getenv("WEBCIT_LANG");
+ if ((language) && (!IsEmptyStr(language)) && (strcmp(language, "UNLIMITED") != 0)) {
+ syslog(LOG_INFO, "Nailing locale to %s", language);
+ }
+ else language = NULL;
+
+ AvailLangLoaded = malloc (sizeof(char*) * nLocales);
+ memset(AvailLangLoaded, 0, sizeof(char*) * nLocales);
+#ifdef HAVE_USELOCALE
+ wc_locales = malloc (sizeof(locale_t) * nLocales);
+ memset(wc_locales,0, sizeof(locale_t) * nLocales);
+ /* create default locale */
+ Empty_Locale = newlocale(LC_ALL_MASK, NULL, NULL);
+#endif
+
+ for (i = 0; i < nLocales; ++i) {
+ if ((language != NULL) && (strcmp(AvailLang[i], language) != 0))
+ continue;
+ if (i == 0) {
+ sprintf(buf, "C"); /* locale 0 (C) is ascii, not utf-8 */
+
+ }
+ else {
+ sprintf(buf, "%s.UTF8", AvailLang[i]);
+ }
+#ifdef HAVE_USELOCALE
+ wc_locales[nLocalesLoaded] = newlocale(
+ (LC_MESSAGES_MASK|LC_TIME_MASK),
+ buf,
+ (((i > 0) && (wc_locales[0] != NULL)) ? wc_locales[0] : Empty_Locale)
+ );
+ if (wc_locales[nLocalesLoaded] == NULL) {
+ syslog(LOG_NOTICE, "locale for %s disabled: %s", buf, strerror(errno));
+ }
+ else {
+ syslog(LOG_INFO, "Found locale: %s - %s", buf, AvailLang[i]);
+ AvailLangLoaded[nLocalesLoaded] = AvailLang[i];
+ nLocalesLoaded++;
+ }
+#else
+ if ((language != NULL) && (strcmp(language, AvailLang[i]) == 0)) {
+ setenv("LANG", buf, 1);
+ AvailLangLoaded[nLocalesLoaded] = AvailLang[i];
+ setlocale(LC_MESSAGES, AvailLang[i]);
+ nLocalesLoaded++;
+ }
+ else if (nLocalesLoaded == 0) {
+ setenv("LANG", buf, 1);
+ AvailLangLoaded[nLocalesLoaded] = AvailLang[i];
+ nLocalesLoaded++;
+ }
+#endif
+ }
+ if ((language != NULL) && (nLocalesLoaded == 0)) {
+ syslog(LOG_WARNING, "Your selected locale [%s] isn't available on your system. falling back to C", language);
+#ifdef HAVE_USELOCALE
+ wc_locales[0] = newlocale(
+ (LC_MESSAGES_MASK|LC_TIME_MASK),
+ AvailLang[0],
+ Empty_Locale
+ );
+#else
+ setlocale(LC_MESSAGES, AvailLang[0]);
+ setenv("LANG", AvailLang[0], 1);
+#endif
+ AvailLangLoaded[0] = AvailLang[0];
+ nLocalesLoaded = 1;
+ }
+
+#ifdef ENABLE_NLS
+ setlocale(LC_ALL, "");
+ syslog(LOG_DEBUG, "Text domain: %s", textdomain("webcit"));
+ syslog(LOG_DEBUG, "Text domain Charset: %s", bind_textdomain_codeset("webcit", "UTF8"));
+ syslog(LOG_DEBUG, "Message catalog directory: %s", bindtextdomain(textdomain(NULL), LOCALEDIR"/locale"));
+#endif
+}
+
+
+void
+ServerShutdownModule_GETTEXT
+(void)
+{
+#ifdef HAVE_USELOCALE
+ int i;
+ for (i = 0; i < nLocalesLoaded; ++i) {
+ if (Empty_Locale != wc_locales[i]) {
+ freelocale(wc_locales[i]);
+ }
+ }
+ free(wc_locales);
+#endif
+ free(AvailLangLoaded);
+}
+
+#else /* ENABLE_NLS */
+const char *AvailLang[] = {
+ "C",
+ ""
+};
+
+/* dummy for non NLS enabled systems */
+void
+ServerShutdownModule_GETTEXT
+(void)
+{
+}
+
+
+void tmplput_offer_languages(StrBuf *Target, WCTemplputParams *TP)
+{
+ wc_printf("English (US)");
+}
+
+/* dummy for non NLS enabled systems */
+void set_selected_language(const char *lang) {
+}
+
+/* dummy for non NLS enabled systems */
+void go_selected_language(void) {
+}
+
+/* dummy for non NLS enabled systems */
+void stop_selected_language(void) {
+}
+
+void initialize_locales(void) {
+}
+
+#endif /* ENABLE_NLS */
+
+void TmplGettext(StrBuf *Target, WCTemplputParams *TP)
+{
+ const char *Text = _(TP->Tokens->Params[0]->Start);
+
+ StrBufAppendTemplateStr(Target, TP, Text, 1);
+}
+
+
+/*
+ * Returns the language currently in use.
+ * This function returns a static string, so don't do anything stupid please.
+ */
+const char *get_selected_language(void) {
+#ifdef ENABLE_NLS
+#ifdef HAVE_USELOCALE
+ return AvailLangLoaded[WC->selected_language];
+#else
+ return "en";
+#endif
+#else
+ return "en";
+#endif
+}
+
+
+void Header_HandleAcceptLanguage(StrBuf *Line, ParsedHttpHdrs *hdr)
+{
+ hdr->HR.browser_language = Line;
+}
+
+
+void
+InitModule_GETTEXT
+(void)
+{
+ initialize_locales();
+
+ RegisterHeaderHandler(HKEY("ACCEPT-LANGUAGE"),
+ Header_HandleAcceptLanguage);
+
+ RegisterNamespace("LANG:SELECT", 0, 0,
+ tmplput_offer_languages, NULL, CTX_NONE);
+}
+
+
+void
+SessionNewModule_GETTEXT
+(wcsession *sess)
+{
+#ifdef ENABLE_NLS
+ if ( (sess != NULL)
+ && (!sess->Hdr->HR.Static)
+ && (sess->Hdr->HR.browser_language != NULL)
+ ) {
+ httplang_to_locale(sess->Hdr->HR.browser_language, sess);
+ }
+#endif
+}
+
+void
+SessionAttachModule_GETTEXT
+(wcsession *sess)
+{
+#ifdef ENABLE_NLS
+ go_selected_language(); /* set locale */
+#endif
+}
+
+void
+SessionDestroyModule_GETTEXT
+(wcsession *sess)
+{
+#ifdef ENABLE_NLS
+ stop_selected_language(); /* unset locale */
+#endif
+}
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