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keybox-init.c
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keybox-init.c
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/* keybox-init.c - Initalization of the library
* Copyright (C) 2001 Free Software Foundation, Inc.
*
* This file is part of GnuPG.
*
* GnuPG is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* GnuPG 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#include <config.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <assert.h>
#include "keybox-defs.h"
#define compare_filenames strcmp
static KB_NAME kb_names;
/*
Register a filename for plain keybox files. Returns a pointer to be
used to create a handles etc or NULL to indicate that it has already
been registered */
void *
keybox_register_file (const char *fname, int secret)
{
KB_NAME kr;
for (kr=kb_names; kr; kr = kr->next)
{
if ( !compare_filenames (kr->fname, fname) )
return NULL; /* already registered */
}
kr = xtrymalloc (sizeof *kr + strlen (fname));
if (!kr)
return NULL;
strcpy (kr->fname, fname);
kr->secret = !!secret;
/* kr->lockhd = NULL;*/
kr->is_locked = 0;
kr->did_full_scan = 0;
/* keep a list of all issued pointers */
kr->next = kb_names;
kb_names = kr;
/* create the offset table the first time a function here is used */
/* if (!kb_offtbl) */
/* kb_offtbl = new_offset_hash_table (); */
return kr;
}
int
keybox_is_writable (void *token)
{
KB_NAME r = token;
return r? !access (r->fname, W_OK) : 0;
}
/* Create a new handle for the resource associated with TOKEN. SECRET
is just a cross-check.
The returned handle must be released using keybox_release (). */
KEYBOX_HANDLE
keybox_new (void *token, int secret)
{
KEYBOX_HANDLE hd;
KB_NAME resource = token;
assert (resource && !resource->secret == !secret);
hd = xtrycalloc (1, sizeof *hd);
if (hd)
{
hd->kb = resource;
hd->secret = !!secret;
}
return hd;
}
void
keybox_release (KEYBOX_HANDLE hd)
{
if (!hd)
return;
_keybox_release_blob (hd->found.blob);
if (hd->fp)
{
fclose (hd->fp);
hd->fp = NULL;
}
xfree (hd->word_match.name);
xfree (hd->word_match.pattern);
xfree (hd);
}
const char *
keybox_get_resource_name (KEYBOX_HANDLE hd)
{
if (!hd || !hd->kb)
return NULL;
return hd->kb->fname;
}
int
keybox_set_ephemeral (KEYBOX_HANDLE hd, int yes)
{
if (!hd)
return gpg_error (GPG_ERR_INV_HANDLE);
hd->ephemeral = yes;
return 0;
}

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