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w32: Add code to support a portable use of GnuPG.

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* common/homedir.c (w32_bin_is_bin, w32_portable_app) [W32]: New.
(check_portable_app) [W32]: New.
(standard_homedir, default_homedir) [W32]: Support the portable flag.
(w32_rootdir, w32_commondir) [W32]: Ditto.
(gnupg_bindir, gnupg_cachedir, dirmngr_socket_name) [W32]: Ditto.
* common/logging.h (JNLIB_LOG_NO_REGISTRY): New.
* common/logging.c (no_registry): New variable.
(log_set_prefix, log_get_prefix): Set/get that variable.
(do_logv): Do not check the registry if that variable is set.
--

Beware: This code has not been tested because it is not yet possible
to build GnuPG 2.1 for Windows.  However, the code will be the base
for an implementation in 2.0.

A portable use of GnuPG under Windows means that GnuPG uses a home
directory depending on the location of the actual binary.  No registry
variables are considered.  The portable mode is enabled if in the
installation directory of the the binary "gpgconf.exe" and a
file "gpgconf.ctl" are found.  The latter file is empty or consists
only of empty or '#' comment lines.

Signed-off-by: Werner Koch <wk@gnupg.org>
This commit is contained in:
Werner Koch 2013-08-01 11:20:48 +02:00
parent db4651734f
commit 9ff72e4e7e
5 changed files with 214 additions and 62 deletions
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14
doc/opt-homedir.texi
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@ -5,6 +5,18 @@ Set the name of the home directory to @var{dir}. If this option is not
used, the home directory defaults to @file{~/.gnupg}. It is only
recognized when given on the command line. It also overrides any home
directory stated through the environment variable @env{GNUPGHOME} or
(on W32 systems) by means of the Registry entry
(on Windows systems) by means of the Registry entry
@var{HKCU\Software\GNU\GnuPG:HomeDir}.
On Windows systems it is possible to install GnuPG as a portable
application. In this case only this command line option is
considered, all other ways to set a home directory are ignored.
To install GnuPG as a portable application under Windows, create an
empty file name @file{gpgconf.ctl} in the same directory as the tool
@file{gpgconf.exe}. The root of the installation is than that
directory; or, if @file{gpgconf.exe} has been installed directly below
a directory named @file{bin}, its parent directory. You also need to
make sure that the following directories exist and are writable:
@file{ROOT/home} for the GnuPG home and @file{ROOT/var/cache/gnupg}
for internal cache files.