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posix-util.c
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posix-util.c
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/* posix-util.c - Utility functions for Posix
Copyright (C) 2001 Werner Koch (dd9jn)
Copyright (C) 2001, 2002, 2004 g10 Code GmbH
This file is part of GPGME.
GPGME is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of
the License, or (at your option) any later version.
GPGME 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
02111-1307, USA. */
#ifdef HAVE_CONFIG_H
#include
<config.h>
#endif
#include
<stdio.h>
#include
<stdlib.h>
#include
<string.h>
#include
<assert.h>
#include
"util.h"
#include
"sys-util.h"
#include
"debug.h"
/* These variables store the malloced name of alternative default
binaries. The are set only once by gpgme_set_global_flag. */
static
char
*
default_gpg_name
;
static
char
*
default_gpgconf_name
;
/* Set the default name for the gpg binary. This function may only be
called by gpgme_set_global_flag. Returns 0 on success. Leading
directories are removed from NAME. */
int
_gpgme_set_default_gpg_name
(
const
char
*
name
)
{
const
char
*
s
;
s
=
strrchr
(
name
,
'/'
);
if
(
s
)
name
=
s
+
1
;
if
(
!
default_gpg_name
)
default_gpg_name
=
strdup
(
name
);
return
!
default_gpg_name
;
}
/* Set the default name for the gpgconf binary. This function may
only be called by gpgme_set_global_flag. Returns 0 on success.
Leading directories are removed from NAME. */
int
_gpgme_set_default_gpgconf_name
(
const
char
*
name
)
{
const
char
*
s
;
s
=
strrchr
(
name
,
'/'
);
if
(
s
)
name
=
s
+
1
;
if
(
!
default_gpgconf_name
)
default_gpgconf_name
=
strdup
(
name
);
return
!
default_gpgconf_name
;
}
/* Find an executable program PGM along the envvar PATH. */
static
char
*
walk_path
(
const
char
*
pgm
)
{
const
char
*
orig_path
,
*
path
,
*
s
;
char
*
fname
,
*
p
;
#ifdef FIXED_SEARCH_PATH
orig_path
=
FIXED_SEARCH_PATH
;
#else
orig_path
=
getenv
(
"PATH"
);
if
(
!
orig_path
)
orig_path
=
"/bin:/usr/bin"
;
#endif
fname
=
malloc
(
strlen
(
orig_path
)
+
1
+
strlen
(
pgm
)
+
1
);
if
(
!
fname
)
return
NULL
;
path
=
orig_path
;
for
(;;)
{
for
(
s
=
path
,
p
=
fname
;
*
s
&&
*
s
!=
':'
;
s
++
,
p
++
)
*
p
=
*
s
;
if
(
p
!=
fname
&&
p
[
-1
]
!=
'/'
)
*
p
++
=
'/'
;
strcpy
(
p
,
pgm
);
if
(
!
access
(
fname
,
X_OK
))
return
fname
;
if
(
!*
s
)
break
;
path
=
s
+
1
;
}
_gpgme_debug
(
DEBUG_ENGINE
,
"gpgme-walk_path: '%s' not found in '%s'"
,
pgm
,
orig_path
);
free
(
fname
);
return
NULL
;
}
/* Return the full file name of the GPG binary. This function is used
if gpgconf was not found and thus it can be assumed that gpg2 is
not installed. This function is only called by get_gpgconf_item
and may not be called concurrently. */
char
*
_gpgme_get_gpg_path
(
void
)
{
return
walk_path
(
default_gpg_name
?
default_gpg_name
:
"gpg"
);
}
/* This function is only called by get_gpgconf_item and may not be
called concurrently. */
char
*
_gpgme_get_gpgconf_path
(
void
)
{
return
walk_path
(
default_gpgconf_name
?
default_gpgconf_name
:
"gpgconf"
);
}
/* See w32-util.c */
int
_gpgme_get_conf_int
(
const
char
*
key
,
int
*
value
)
{
return
0
;
}
void
_gpgme_allow_set_foreground_window
(
pid_t
pid
)
{
(
void
)
pid
;
/* Not needed. */
}
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Expires
Mon, Dec 23, 5:06 PM (10 h, 53 m)
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