wks: Use templates for the server responses.

* common/helpfile.c (gnupg_get_template): Add arg locale_override and
adjust all callers.
* tools/wks-receive.c (struct receive_ctx_s): Add field ct_language.
(get_language): New.
(new_part): Call it.
(wks_receive): Pass language to the result callback.
* tools/gpg-wks-client.c (short_locale): New.
(main): Get and store the current locale.
(command_create): Fix a glitch for the Posteo hack.  Insert the locale
into the confirmation request.
(send_confirmation_response): Ditto.
* tools/gpg-wks-server.c (struct server_ctx_s): Add field language.
(only_ascii): New.
(struct my_subst_vars_s, my_subst_vars_cb, my_subst_vars): New.
(send_confirmation_request): Use a template.
(send_congratulation_message): Ditto.
(check_and_publish): Pss ctx to send_congratulation_message.
(command_receive_cb): Add arg language.

* doc/wks-utils.txt, doc/wks-utils.de.txt: New.
* doc/Makefile.am (helpfiles): Add them.
--

GnuPG-bug-id: 7381

Note that the subject is not yet translated or templated due to a
missing header encoding function.

common/helpfile.c

@@ -234,21 +234,25 @@ findkey_locale (const char *domain, const char *key, const char *locname,
    intervening lines (except for comment lines) lead to the same help
    text.  Lines following the key lines make up the actual template texts.
 */
-
 char *
-gnupg_get_template (const char *domain, const char *key, unsigned int flags)
+gnupg_get_template (const char *domain, const char *key, unsigned int flags,
+                    const char *override_locale)
 {
-  static const char *locname;
+  static const char *locname_buffer;
+  const char *locname;
   char *result;
 
-  if (!locname)
+  if (override_locale && *override_locale)
+    locname = override_locale;
+  else if (!locname_buffer)
     {
       char *buffer, *p;
       int count = 0;
       const char *s = gnupg_messages_locale_name ();
+
       buffer = xtrystrdup (s);
       if (!buffer)
-        locname = "";
+        locname_buffer = "";
       else
         {
           for (p = buffer; *p; p++)
@@ -259,9 +263,12 @@ gnupg_get_template (const char *domain, const char *key, unsigned int flags)
                 if (count++)
                   *p = 0;  /* Also cut at an underscore in the territory.  */
               }
-          locname = buffer;
+          locname_buffer = buffer;
         }
+      locname = locname_buffer;
     }
+  else
+    locname = locname_buffer;
 
   if (!key || !*key)
     return NULL;
@@ -293,5 +300,6 @@ char *
 gnupg_get_help_string (const char *key, int only_current)
 {
   return gnupg_get_template ("help", key,
-                             only_current? GET_TEMPLATE_CURRENT_LOCALE : 0);
+                             only_current? GET_TEMPLATE_CURRENT_LOCALE : 0,
+                             NULL);
 }

common/t-helpfile.c

@@ -66,7 +66,7 @@ main (int argc, char **argv)
     }
 
 
-  result = gnupg_get_template (argv[0], argv[1], flags);
+  result = gnupg_get_template (argv[0], argv[1], flags, NULL);
   if (!result)
     {
       fprintf (stderr,

common/util.h

@@ -303,7 +303,7 @@ void gnupg_rl_initialize (void);
 #define GET_TEMPLATE_CRLF           4 /* Use CR+LF.                         */
 
 char *gnupg_get_template (const char *domain, const char *key,
-                          unsigned int flags);
+                          unsigned int flags, const char *override_locale);
 char *gnupg_get_help_string (const char *key, int only_current_locale);
 
 /*-- localename.c --*/