gpg: Warn about (but don't fail) on scdaemon options in gpg.conf.

* g10/gpg.c: Add config options that should belong in scdaemon.conf
* g10/main.h, g10/misc.c (obsolete_scdaemon_option): New.

--

In gpg2, the following options are only relevant for scdaemon:

 reader-port
 ctapi-driver
 pcsc-driver
 disable-ccid

but in gpg1, they are options for gpg itself.

Some users of gpg1 might have these options in their
~/.gnupg/gpg.conf, which causes gpg2 to fail hard if it reads that
config file.

gpg2 should not fail hard, though giving a warning (and suggesting a
move to scdaemon.conf) seems OK.

This patch does *not* reintroduce any documentation for these options
in gpg.texi, even to indicate that they are "dummy" options, since
scdaemon.texi contains the appropriate documentation.

Debian-bug-id: 762844

- Program names factored out from obsolete_scdaemon_option to make
  reuse without new translations easier. -wk

1 files changed, 2 insertions, 0 deletions

diff --git a/g10/main.h b/g10/main.h
index 44c447866..ad528b439 100644
--- a/g10/main.h
+++ b/g10/main.h
@@ -136,6 +136,8 @@ void deprecated_warning(const char *configname,unsigned int configlineno,
 void deprecated_command (const char *name);
 void obsolete_option (const char *configname, unsigned int configlineno,
                       const char *name);
+void obsolete_scdaemon_option (const char *configname,
+                               unsigned int configlineno, const char *name);
 
 int string_to_cipher_algo (const char *string);
 int string_to_digest_algo (const char *string);