diff options
Diffstat (limited to 'kbx/keybox-file.c')
-rw-r--r-- | kbx/keybox-file.c | 146 |
1 files changed, 0 insertions, 146 deletions
diff --git a/kbx/keybox-file.c b/kbx/keybox-file.c deleted file mode 100644 index db3164fef..000000000 --- a/kbx/keybox-file.c +++ /dev/null @@ -1,146 +0,0 @@ -/* keybox-file.c - file oeprations - * Copyright (C) 2001, 2003 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 2 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, write to the Free Software - * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA - */ - -#include <config.h> -#include <stdlib.h> -#include <stdio.h> -#include <string.h> -#include <errno.h> -#include <time.h> - -#include "keybox-defs.h" - -/* Read a block at the current postion and return it in r_blob. - r_blob may be NULL to simply skip the current block */ -int -_keybox_read_blob2 (KEYBOXBLOB *r_blob, FILE *fp, int *skipped_deleted) -{ - char *image; - size_t imagelen = 0; - int c1, c2, c3, c4, type; - int rc; - off_t off; - - *skipped_deleted = 0; - again: - *r_blob = NULL; - off = ftello (fp); - if (off == (off_t)-1) - return gpg_error (gpg_err_code_from_errno (errno)); - - if ((c1 = getc (fp)) == EOF - || (c2 = getc (fp)) == EOF - || (c3 = getc (fp)) == EOF - || (c4 = getc (fp)) == EOF - || (type = getc (fp)) == EOF) - { - if ( c1 == EOF && !ferror (fp) ) - return -1; /* eof */ - return gpg_error (gpg_err_code_from_errno (errno)); - } - - imagelen = (c1 << 24) | (c2 << 16) | (c3 << 8 ) | c4; - if (imagelen > 500000) /* Sanity check. */ - return gpg_error (GPG_ERR_TOO_LARGE); - - if (imagelen < 5) - return gpg_error (GPG_ERR_TOO_SHORT); - - if (!type) - { - /* Special treatment for empty blobs. */ - if (fseek (fp, imagelen-5, SEEK_CUR)) - return gpg_error (gpg_err_code_from_errno (errno)); - *skipped_deleted = 1; - goto again; - } - - image = xtrymalloc (imagelen); - if (!image) - return gpg_error (gpg_err_code_from_errno (errno)); - - image[0] = c1; image[1] = c2; image[2] = c3; image[3] = c4; image[4] = type; - if (fread (image+5, imagelen-5, 1, fp) != 1) - { - gpg_error_t tmperr = gpg_error (gpg_err_code_from_errno (errno)); - xfree (image); - return tmperr; - } - - rc = r_blob? _keybox_new_blob (r_blob, image, imagelen, off) : 0; - if (rc || !r_blob) - xfree (image); - return rc; -} - -int -_keybox_read_blob (KEYBOXBLOB *r_blob, FILE *fp) -{ - int dummy; - return _keybox_read_blob2 (r_blob, fp, &dummy); -} - - -/* Write the block to the current file position */ -int -_keybox_write_blob (KEYBOXBLOB blob, FILE *fp) -{ - const char *image; - size_t length; - - image = _keybox_get_blob_image (blob, &length); - if (fwrite (image, length, 1, fp) != 1) - return gpg_error (gpg_err_code_from_errno (errno)); - return 0; -} - - -/* Write a fresh header type blob. */ -int -_keybox_write_header_blob (FILE *fp) -{ - unsigned char image[32]; - u32 val; - - memset (image, 0, sizeof image); - /* Length of this blob. */ - image[3] = 32; - - image[4] = BLOBTYPE_HEADER; - image[5] = 1; /* Version */ - - memcpy (image+8, "KBXf", 4); - val = time (NULL); - /* created_at and last maintenance run. */ - image[16] = (val >> 24); - image[16+1] = (val >> 16); - image[16+2] = (val >> 8); - image[16+3] = (val ); - image[20] = (val >> 24); - image[20+1] = (val >> 16); - image[20+2] = (val >> 8); - image[20+3] = (val ); - - if (fwrite (image, 32, 1, fp) != 1) - return gpg_error (gpg_err_code_from_errno (errno)); - return 0; -} - - |