1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
|
/*
* Copyright (C) 2003, 2004, 2005, 2007 Free Software Foundation
*
* Author: Nikos Mavroyanopoulos, Timo Schulz
*
* This file is part of GNUTLS-EXTRA.
*
* GNUTLS-EXTRA 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.
*
* GNUTLS-EXTRA 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 GNUTLS-EXTRA; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*
*/
/* Functions on OpenPGP keyring parsing
*/
#include <gnutls_int.h>
#include <gnutls_datum.h>
#include <gnutls_global.h>
#include <gnutls_errors.h>
#include <gnutls_openpgp.h>
#include <gnutls_num.h>
#include <openpgp.h>
/* Keyring stuff.
*/
/**
* gnutls_openpgp_keyring_init - This function initializes a gnutls_openpgp_keyring_t structure
* @keyring: The structure to be initialized
*
* This function will initialize an OpenPGP keyring structure.
*
* Returns 0 on success.
*
**/
int
gnutls_openpgp_keyring_init (gnutls_openpgp_keyring_t * keyring)
{
*keyring = gnutls_calloc (1, sizeof (gnutls_openpgp_keyring_int));
if (*keyring)
return 0; /* success */
return GNUTLS_E_MEMORY_ERROR;
}
/**
* gnutls_openpgp_keyring_deinit - This function deinitializes memory used by a gnutls_openpgp_keyring_t structure
* @keyring: The structure to be initialized
*
* This function will deinitialize a keyring structure.
*
**/
void
gnutls_openpgp_keyring_deinit (gnutls_openpgp_keyring_t keyring)
{
if (!keyring)
return;
if (keyring->db)
{
cdk_keydb_free (keyring->db);
keyring->db = NULL;
}
/* In some cases the stream is also stored outside the keydb context
and we need to close it here then. */
if (keyring->db_stream)
{
cdk_stream_close (keyring->db_stream);
keyring->db_stream = NULL;
}
gnutls_free (keyring);
}
/**
* gnutls_openpgp_keyring_check_id - Check if a key id exists in the keyring
* @ring: holds the keyring to check against
* @keyid: will hold the keyid to check for.
* @flags: unused (should be 0)
*
* Check if a given key ID exists in the keyring.
*
* Returns 0 on success (if keyid exists) and a negative error code
* on failure.
**/
int
gnutls_openpgp_keyring_check_id (gnutls_openpgp_keyring_t ring,
const unsigned char keyid[8],
unsigned int flags)
{
cdk_pkt_pubkey_t pk;
uint32_t id[2];
id[0] = _gnutls_read_uint32 (keyid);
id[1] = _gnutls_read_uint32 (&keyid[4]);
if (!cdk_keydb_get_pk (ring->db, id, &pk))
{
cdk_pk_release (pk);
return 0;
}
_gnutls_debug_log ("PGP: key not found %08lX\n", (unsigned long)id[1]);
return GNUTLS_E_NO_CERTIFICATE_FOUND;
}
/**
* gnutls_openpgp_keyring_import - Import a raw- or Base64-encoded OpenPGP keyring
* @keyring: The structure to store the parsed key.
* @data: The RAW or BASE64 encoded keyring.
* @format: One of #gnutls_openpgp_keyring_fmt elements.
*
* This function will convert the given RAW or Base64 encoded keyring to the
* native #gnutls_openpgp_keyring_t format. The output will be stored in
* 'keyring'.
*
* Returns 0 on success.
*
**/
int
gnutls_openpgp_keyring_import (gnutls_openpgp_keyring_t keyring,
const gnutls_datum_t *data,
gnutls_openpgp_crt_fmt_t format)
{
cdk_error_t err;
cdk_stream_t input;
_gnutls_debug_log ("PGP: keyring import format '%s'\n",
format == GNUTLS_OPENPGP_FMT_RAW? "raw" : "base64");
if (format == GNUTLS_OPENPGP_FMT_RAW)
{
err = cdk_keydb_new (&keyring->db, CDK_DBTYPE_DATA,
data->data, data->size);
if (err)
gnutls_assert ();
return _gnutls_map_cdk_rc (err);
}
/* Create a new stream from the given data, which means to
allocate a new stream and to write the data in the stream.
Then push the armor filter to decode the data and to store
it in the raw format. */
err = cdk_stream_tmp_from_mem (data->data, data->size, &input);
if (!err)
err = cdk_stream_set_armor_flag (input, 0);
if (!err)
err = cdk_keydb_new_from_stream (&keyring->db, 0, input);
if (err)
{
cdk_stream_close (input);
gnutls_assert ();
}
else
/* The keydb function will not close the stream itself, so we need to
store it separately to close it later. */
keyring->db_stream = input;
return _gnutls_map_cdk_rc (err);
}
|
