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b008274afd
We better do this once and for all instead of cluttering all future commits with diffs of trailing white spaces. In the majority of cases blank or single lines are affected and thus this change won't disturb a git blame too much. For future commits the pre-commit scripts checks that this won't happen again.
203 lines
4.9 KiB
C
203 lines
4.9 KiB
C
/* keybox-init.c - Initalization of the library
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* Copyright (C) 2001 Free Software Foundation, Inc.
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*
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* This file is part of GnuPG.
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*
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* GnuPG is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 3 of the License, or
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* (at your option) any later version.
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*
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* GnuPG is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include <config.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include <assert.h>
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#include "../common/mischelp.h"
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#include "keybox-defs.h"
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static KB_NAME kb_names;
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/* Register a filename for plain keybox files. Returns a pointer to
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be used to create a handles and so on. Returns NULL to indicate
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that FNAME has already been registered. */
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void *
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keybox_register_file (const char *fname, int secret)
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{
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KB_NAME kr;
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for (kr=kb_names; kr; kr = kr->next)
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{
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if (same_file_p (kr->fname, fname) )
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return NULL; /* Already registered. */
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}
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kr = xtrymalloc (sizeof *kr + strlen (fname));
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if (!kr)
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return NULL;
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strcpy (kr->fname, fname);
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kr->secret = !!secret;
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kr->handle_table = NULL;
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kr->handle_table_size = 0;
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/* kr->lockhd = NULL;*/
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kr->is_locked = 0;
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kr->did_full_scan = 0;
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/* keep a list of all issued pointers */
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kr->next = kb_names;
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kb_names = kr;
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/* create the offset table the first time a function here is used */
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/* if (!kb_offtbl) */
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/* kb_offtbl = new_offset_hash_table (); */
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return kr;
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}
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int
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keybox_is_writable (void *token)
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{
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KB_NAME r = token;
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return r? !access (r->fname, W_OK) : 0;
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}
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/* Create a new handle for the resource associated with TOKEN. SECRET
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is just a cross-check.
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The returned handle must be released using keybox_release (). */
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KEYBOX_HANDLE
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keybox_new (void *token, int secret)
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{
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KEYBOX_HANDLE hd;
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KB_NAME resource = token;
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int idx;
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assert (resource && !resource->secret == !secret);
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hd = xtrycalloc (1, sizeof *hd);
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if (hd)
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{
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hd->kb = resource;
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hd->secret = !!secret;
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if (!resource->handle_table)
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{
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resource->handle_table_size = 3;
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resource->handle_table = xtrycalloc (resource->handle_table_size,
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sizeof *resource->handle_table);
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if (!resource->handle_table)
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{
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resource->handle_table_size = 0;
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xfree (hd);
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return NULL;
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}
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}
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for (idx=0; idx < resource->handle_table_size; idx++)
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if (!resource->handle_table[idx])
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{
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resource->handle_table[idx] = hd;
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break;
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}
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if (!(idx < resource->handle_table_size))
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{
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KEYBOX_HANDLE *tmptbl;
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size_t newsize;
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newsize = resource->handle_table_size + 5;
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tmptbl = xtryrealloc (resource->handle_table,
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newsize * sizeof (*tmptbl));
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if (!tmptbl)
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{
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xfree (hd);
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return NULL;
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}
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resource->handle_table = tmptbl;
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resource->handle_table_size = newsize;
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resource->handle_table[idx] = hd;
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for (idx++; idx < resource->handle_table_size; idx++)
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resource->handle_table[idx] = NULL;
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}
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}
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return hd;
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}
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void
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keybox_release (KEYBOX_HANDLE hd)
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{
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if (!hd)
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return;
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if (hd->kb->handle_table)
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{
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int idx;
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for (idx=0; idx < hd->kb->handle_table_size; idx++)
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if (hd->kb->handle_table[idx] == hd)
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hd->kb->handle_table[idx] = NULL;
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}
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_keybox_release_blob (hd->found.blob);
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if (hd->fp)
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{
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fclose (hd->fp);
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hd->fp = NULL;
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}
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xfree (hd->word_match.name);
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xfree (hd->word_match.pattern);
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xfree (hd);
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}
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const char *
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keybox_get_resource_name (KEYBOX_HANDLE hd)
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{
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if (!hd || !hd->kb)
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return NULL;
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return hd->kb->fname;
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}
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int
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keybox_set_ephemeral (KEYBOX_HANDLE hd, int yes)
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{
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if (!hd)
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return gpg_error (GPG_ERR_INV_HANDLE);
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hd->ephemeral = yes;
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return 0;
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}
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/* Close the file of the resource identified by HD. For consistent
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results this fucntion closes the files of all handles pointing to
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the resource identified by HD. */
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void
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_keybox_close_file (KEYBOX_HANDLE hd)
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{
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int idx;
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KEYBOX_HANDLE roverhd;
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if (!hd || !hd->kb || !hd->kb->handle_table)
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return;
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for (idx=0; idx < hd->kb->handle_table_size; idx++)
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if ((roverhd = hd->kb->handle_table[idx]))
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{
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if (roverhd->fp)
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{
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fclose (roverhd->fp);
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roverhd->fp = NULL;
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}
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}
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assert (!hd->fp);
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}
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