-#define _GNU_SOURCE
+/*
+ * $Id
+ */
+/**
+ * \defgroup LocaleHeaderParser Parse the browser http locale headers and set the NLS stuff.
+ * \ingroup WebcitHttpServer
+ */
+/*@{*/
#include "webcit.h"
#include "webserver.h"
-static const char* AvailLang[]=
- {
- "de_DE"
-
+#ifdef ENABLE_NLS
- };
+#define NUM_LANGS 9 /**< how many different locales do we know? */
+#define SEARCH_LANG 20 /**< how many langs should we parse? */
-/* TODO: we skip the language weightening so far. */
-/* Accept-Language: 'de-de,en-us;q=0.7,en;q=0.3' */
-void httplang_to_locale(const char* LocaleString)
+/** actual supported locales */
+char *AvailLang[NUM_LANGS] = {
+ "C",
+ "en_US",
+ "de_DE",
+ "it_IT",
+ "es_ES",
+ "en_GB",
+ "da_DK",
+ "fr_FR",
+ "nl_NL"
+};
+
+locale_t wc_locales[NUM_LANGS]; /**< here we keep the parsed stuff */
+
+/** 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;
+
+/* \brief parse browser locale header
+ * seems as most browsers just do a one after coma 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
+ * \param LocaleString the string from the browser http headers
+ */
+
+void httplang_to_locale(char *LocaleString)
{
- char *locale="C";
- char *wanted_locales[10];
- int i=0;
- int j=0;
- size_t len=strlen(LocaleString);
- int nFound=0;
- int nAvail=1;
- char *search=(char*)malloc(len);
- int done=0;
- // char *mo;
- // char *webcitdir = WEBCITDIR;
- locale_t my_Locale;
- locale_t my_Empty_Locale;
- memcpy(search,LocaleString,len);
- search[len+1]='\0';
- len=strlen(search);
- /* the web browser sends '-', we need '_' */
- for (i=0;i<len; i++)
- if (search[i]=='-') search[i]='_';
- i=0;
- while ((search[i]!='\0')&&
- !done &&
- (nFound<10))
- {
- if ((search[i]==',')||(search[i]==';'))
-
+ LangStruct wanted_locales[SEARCH_LANG];
+ LangStruct *ls;
+
+ int i = 0;
+ int j = 0;
+ /* size_t len = strlen(LocaleString); */
+ long prio;
+ int av;
+ int nBest;
+ int nParts;
+ char search[1024];
+
+ safestrncpy(search, LocaleString, sizeof search);
+ nParts=num_tokens(search,',');
+ for (i=0; ((i<nParts)&&(i<SEARCH_LANG)); i++)
+ {
+ char buf[16];
+ char sbuf[16];
+ char lbuf[16];
+ int blen;
+
+ ls=&wanted_locales[i];
+
+ extract_token(&buf[0],search, i,',',16);
+ /** we are searching, if this list item has something like ;q=n*/
+ if (num_tokens(&buf[0],'=')>1) {
+ int sbuflen, k;
+ extract_token(&sbuf[0],&buf[0], 1,'=',16);
+ sbuflen=strlen(&sbuf[0]);
+ for (k=0; k<sbuflen; k++) if (sbuf[k]=='.') sbuf[k]='0';
+ ls->priority=atol(&sbuf[0]);
+ }
+ else {
+ ls->priority=1000;
+ }
+ /** get the locale part */
+ extract_token(&sbuf[0],&buf[0],0,';',16);
+ /** get the lang part, which should be allways there */
+ extract_token(&ls->lang[0],&sbuf[0],0,'-',16);
+ /** get the area code if any. */
+ if (num_tokens(&sbuf[0],'-')>1) {
+ extract_token(&ls->region[0],&sbuf[0],1,'-',16);
+ }
+ else { /** no ara code? use lang code */
+ blen=strlen(&ls->lang[0]);
+ memcpy(&ls->region[0], ls->lang,blen);
+ ls->region[blen]='\0';
+ } /** area codes are uppercase */
+ blen=strlen(&ls->region[0]);
+ for (j=0; j<blen; j++)
{
- if (search[i]==';') done=1;
- search[i]='\0';
- wanted_locales[nFound]=(char*)&search[j];
- j=i+1;
- nFound++;
+ int chars=toupper(ls->region[j]);
+ ls->region[j]=(char)chars;/** \todo ?! */
}
+ sprintf(&lbuf[0],"%s_%s",&ls->lang[0],&ls->region[0]);
- i++;
+ /** check if we have this lang */
+ ls->availability=1;
+ ls->selectedlang=-1;
+ for (j=0; j<NUM_LANGS; j++) {
+ int result;
+ /** match against the LANG part */
+ result=strcasecmp(&ls->lang[0], AvailLang[j]);
+ if ((result<0)&&(result<ls->availability)){
+ ls->availability=result;
+ ls->selectedlang=j;
+ }
+ /** match against lang and locale */
+ if (0==strcasecmp(&lbuf[0], AvailLang[j])){
+ ls->availability=0;
+ ls->selectedlang=j;
+ j=NUM_LANGS;
+ }
+ }
+ }
+
+ 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;
}
- /* todo: weight */
+ }
+ if (nBest == -1) {
+ /** fall back to C */
+ nBest=0;
+ }
+ WC->selected_language=nBest;
+ lprintf(9, "language found: %s\n", AvailLang[WC->selected_language]);
+}
- for (i=0; i<=nFound; i++)
- {
- for (j=0;j<nAvail; j++)
- {
- int ret=strncasecmp(wanted_locales[i],
- AvailLang[j],
- strlen(wanted_locales[i]));
- if (!ret)
- {
- locale=(char*)AvailLang[j];//wanted_locales[i];
- i=nFound+1;
- j=nAvail+1;
- continue;
- }
+/* TODO: we skip the language weighting so far. */
+/* 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 */
+//void httplang_to_locale(char *LocaleString)
+//{
+// char selected_locale[16];
+// int i, j;
+// char lang[64];
+// int num_accept = 0;
+//
+// lprintf(9, "languageAccept: %s\n", LocaleString);
+//
+// strcpy(selected_locale, "C");
+// num_accept = num_tokens(LocaleString, ',');
+//
+// for (i=num_accept-1; i>=0; --i) {
+// extract_token(lang, LocaleString, i, ',', sizeof lang);
+//
+// /* Strip out the weights; we don't use them. Also convert
+// * hyphens to underscores.
+// */
+// for (j=0; j<strlen(lang); ++j) {
+// if (lang[j] == '-') lang[j] = '_';
+// if (lang[j] == ';') lang[j] = 0;
+// }
+//
+// for (j=0; j<NUM_LANGS; ++j) {
+// if (!strncasecmp(lang, AvailLang[j], strlen(lang))) {
+// strcpy(selected_locale, AvailLang[j]);
+// }
+// }
+// }
+//
+// lprintf(9, "language found: %s\n", selected_locale);
+// set_selected_language(selected_locale);
+//}
- }
+
+/**
+ * \brief show the language chooser on the login dialog
+ * depending on the browser locale change the sequence of the
+ * language chooser.
+ */
+void offer_languages(void) {
+ int i;
+
+ wprintf("<select name=\"language\" id=\"lname\" size=\"1\">\n");
+
+ for (i=0; i < NUM_LANGS; ++i) {
+ wprintf("<option %s value=%s>%s</option>\n",
+ ((WC->selected_language == i) ? "selected" : ""),
+ AvailLang[i],
+ AvailLang[i]
+ );
+ }
+
+ wprintf("</select>\n");
+}
+
+/**
+ * \brief Set the selected language for this session.
+ * \param lang the locale to set.
+ */
+void set_selected_language(char *lang) {
+ int i;
+
+ for (i=0; i<NUM_LANGS; ++i) {
+ if (!strcasecmp(lang, AvailLang[i])) {
+ WC->selected_language = i;
}
+ }
+}
+
+/**
+ * \brief Activate the selected language for this session.
+ */
+void go_selected_language(void) {
+#ifdef HAVE_USELOCALE
+ if (WC->selected_language < 0) return;
+ uselocale(wc_locales[WC->selected_language]); /** switch locales */
+ textdomain(textdomain(NULL)); /** clear the cache */
+#endif
+}
+
+/**
+ * \brief 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
+}
+
+void preset_locale(void)
+{
+#ifndef HAVE_USELOCALE
+#ifdef HAVE_GETTEXT
+ char *language;
- len=strlen(locale);
- memcpy(search,locale,len);
- memcpy(&search[len],".UTF8",5);
- search[len+5]='\0';
- my_Empty_Locale=newlocale(LC_ALL_MASK, NULL, NULL); /* create default locale */
- my_Locale=newlocale(LC_MESSAGES_MASK/*|LC_TIME_MASK TODO */,
- search,
- my_Empty_Locale);
-
- uselocale(my_Locale);
- //freelocale(my_Locale);
- // freelocale(my_Empty_Locale);
- free(search);
+ language = getenv("LANG");
+ setlocale(LC_MESSAGES, language);
+#endif
+#endif
+}
+/**
+ * \brief Create a locale_t for each available language
+ */
+void initialize_locales(void) {
+ int i;
+ locale_t Empty_Locale;
+ char buf[32];
+
+ /* create default locale */
+ Empty_Locale = newlocale(LC_ALL_MASK, NULL, NULL);
+
+ for (i = 0; i < NUM_LANGS; ++i) {
+ if (i == 0) {
+ sprintf(buf, "%s", AvailLang[i]); // locale 0 (C) is ascii, not utf-8
+ }
+ else {
+ sprintf(buf, "%s.UTF8", AvailLang[i]);
+ }
+ wc_locales[i] = newlocale(
+ (LC_MESSAGES_MASK|LC_TIME_MASK),
+ buf,
+ (((i > 0) && (wc_locales[0] != NULL)) ? wc_locales[0] : Empty_Locale)
+ );
+ if (wc_locales[i] == NULL) {
+ lprintf(1, "Error configuring locale for %s: %s\n",
+ buf,
+ strerror(errno)
+ );
+ }
+ else {
+ lprintf(3, "Configured available locale: %s\n", buf);
+ }
+ }
+}
+
+
+#else /* ENABLE_NLS */
+/** \brief dummy for non NLS enabled systems */
+void offer_languages(void) {
+ wprintf("English (US)");
+}
+
+/** \brief dummy for non NLS enabled systems */
+void set_selected_language(char *lang) {
+}
+/** \brief dummy for non NLS enabled systems */
+void go_selected_language(void) {
}
+/** \brief dummy for non NLS enabled systems */
+void stop_selected_language(void) {
+}
+
+void preset_locale(void)
+{
+}
+#endif /* ENABLE_NLS */
+
+
+/*@}*/
projects / citadel.git / blobdiff