summaryrefslogtreecommitdiff
path: root/trust/extract.c
blob: 3433151868ac5c9ef73f69f194633d4f3a799e89 (plain)
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
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
/*
 * Copyright (c) 2013, Red Hat Inc.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *     * Redistributions of source code must retain the above
 *       copyright notice, this list of conditions and the
 *       following disclaimer.
 *     * Redistributions in binary form must reproduce the
 *       above copyright notice, this list of conditions and
 *       the following disclaimer in the documentation and/or
 *       other materials provided with the distribution.
 *     * The names of contributors to this software may not be
 *       used to endorse or promote products derived from this
 *       software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
 * DAMAGE.
 *
 * Author: Stef Walter <stefw@redhat.com>
 */

#include "config.h"

#include "attrs.h"
#include "compat.h"
#include "debug.h"
#include "extract.h"
#include "message.h"
#include "oid.h"
#include "path.h"
#include "pkcs11x.h"
#include "save.h"
#include "tool.h"
#include "digest.h"

#include "p11-kit/iter.h"
#include "p11-kit/pkcs11.h"

#include <assert.h>
#include <ctype.h>
#include <errno.h>
#include <getopt.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

static bool
format_argument (const char *optarg,
                 p11_extract_func *func)
{
	int i;

	/*
	 * Certain formats do not support expressive trust information.
	 * So the caller should limit the supported purposes when asking
	 * for trust information.
	 */

	static const struct {
		const char *format;
		p11_extract_func func;
	} formats[] = {
		{ "x509-file", p11_extract_x509_file, },
		{ "x509-directory", p11_extract_x509_directory, },
		{ "pem-bundle", p11_extract_pem_bundle, },
		{ "pem-directory", p11_extract_pem_directory },
		{ "pem-directory-hash", p11_extract_pem_directory_hash },
		{ "java-cacerts", p11_extract_jks_cacerts },
		{ "openssl-bundle", p11_extract_openssl_bundle },
		{ "openssl-directory", p11_extract_openssl_directory },
		{ NULL },
	};

	if (*func != NULL) {
		p11_message ("a format was already specified");
		return false;
	}

	for (i = 0; formats[i].format != NULL; i++) {
		if (strcmp (optarg, formats[i].format) == 0) {
			*func = formats[i].func;
			break;
		}
	}

	if (*func == NULL) {
		p11_message ("unsupported or unrecognized format: %s", optarg);
		return false;
	}

	return true;
}

static bool
validate_filter_and_format (p11_enumerate *ex,
                            p11_extract_func func)
{
	int i;

	/*
	 * These are the extract functions that contain purpose information.
	 * If we're being asked to export anchors, and the extract function does
	 * not support, and the caller has not specified a purpose, then add a
	 * default purpose to limit to.
	 */

	static p11_extract_func supports_trust_policy[] = {
		p11_extract_openssl_bundle,
		p11_extract_openssl_directory,
		NULL
	};

	for (i = 0; supports_trust_policy[i] != NULL; i++) {
		if (func == supports_trust_policy[i])
			return true;
	}

	if ((ex->flags & P11_ENUMERATE_ANCHORS) &&
	    (ex->flags & P11_ENUMERATE_BLACKLIST)) {
		/*
		 * If we're extracting *both* anchors and blacklist, then we must have
		 * a format that can represent the different types of information.
		 */

		p11_message ("format does not support trust policy");
		return false;

	} else if (ex->flags & P11_ENUMERATE_ANCHORS) {

		/*
		 * If we're extracting anchors, then we must have either limited the
		 * purposes, or have a format that can represent multiple purposes.
		 */

		if (!ex->limit_to_purposes) {
			p11_message ("format requires a purpose, specify it with --purpose; defaulting to 'server-auth'");
			p11_enumerate_opt_purpose (ex, "server-auth");
		} else if (p11_dict_size (ex->limit_to_purposes) > 1) {
			p11_message ("format does not support multiple purposes, defaulting to 'server-auth'");
			p11_enumerate_opt_purpose (ex, "server-auth");
		}
	}

	return true;
}

int
p11_trust_extract (int argc,
                   char **argv)
{
	p11_extract_func format = NULL;
	p11_enumerate ex;
	int opt = 0;
	int ret;

	enum {
		opt_overwrite = 'f',
		opt_verbose = 'v',
		opt_quiet = 'q',
		opt_help = 'h',
		opt_filter = 1000,
		opt_purpose,
		opt_format,
		opt_comment,
	};

	struct option options[] = {
		{ "filter", required_argument, NULL, opt_filter },
		{ "format", required_argument, NULL, opt_format },
		{ "purpose", required_argument, NULL, opt_purpose },
		{ "overwrite", no_argument, NULL, opt_overwrite },
		{ "comment", no_argument, NULL, opt_comment },
		{ "verbose", no_argument, NULL, opt_verbose },
		{ "quiet", no_argument, NULL, opt_quiet },
		{ "help", no_argument, NULL, opt_help },
		{ 0 },
	};

	p11_tool_desc usages[] = {
		{ 0, "usage: trust extract --format=<output> <destination>" },
		{ opt_filter,
		  "filter of what to export\n"
		  "  ca-anchors        certificate anchors\n"
		  "  blacklist         blacklisted certificates\n"
		  "  trust-policy      anchors and blacklist\n"
		  "  certificates      all certificates\n"
		  "  pkcs11:object=xx  a PKCS#11 URI",
		  "what",
		},
		{ opt_format,
		  "format to extract to\n"
		  "  x509-file           DER X.509 certificate file\n"
		  "  x509-directory      directory of X.509 certificates\n"
		  "  pem-bundle          file containing multiple PEM blocks\n"
		  "  pem-directory       directory of PEM files\n"
		  "  pem-directory-hash  directory of PEM files with hash links\n"
		  "  openssl-bundle      OpenSSL specific PEM bundle\n"
		  "  openssl-directory   directory of OpenSSL specific files\n"
		  "  java-cacerts        java keystore cacerts file",
		  "type"
		},
		{ opt_purpose,
		  "limit to certificates usable for the purpose\n"
		  "  server-auth       for authenticating servers\n"
		  "  client-auth       for authenticating clients\n"
		  "  email             for email protection\n"
		  "  code-signing      for authenticating signed code\n"
		  "  1.2.3.4.5...      an arbitrary object id",
		  "usage"
		},
		{ opt_overwrite, "overwrite output file or directory" },
		{ opt_comment, "add comments to bundles if possible" },
		{ opt_verbose, "show verbose debug output", },
		{ opt_quiet, "suppress command output", },
		{ 0 },
	};

	p11_enumerate_init (&ex);

	while ((opt = p11_tool_getopt (argc, argv, options)) != -1) {
		switch (opt) {
		case opt_verbose:
		case opt_quiet:
			break;

		case opt_overwrite:
			ex.flags |= P11_SAVE_OVERWRITE;
			break;
		case opt_comment:
			ex.flags |= P11_EXTRACT_COMMENT;
			break;
		case opt_filter:
			if (!p11_enumerate_opt_filter (&ex, optarg))
				exit (2);
			break;
		case opt_purpose:
			if (!p11_enumerate_opt_purpose (&ex, optarg))
				exit (2);
			break;
		case opt_format:
			if (!format_argument (optarg, &format))
				exit (2);
			break;
		case 'h':
			p11_tool_usage (usages, options);
			exit (0);
		case '?':
			exit (2);
		default:
			assert_not_reached ();
			break;
		}
	}

	argc -= optind;
	argv += optind;

	if (argc != 1) {
		p11_message ("specify one destination file or directory");
		exit (2);
	}

	if (!format) {
		p11_message ("no output format specified");
		exit (2);
	}

	if (!validate_filter_and_format (&ex, format))
		exit (1);

	if (!p11_enumerate_ready (&ex, "ca-anchors"))
		exit (1);

	ex.flags |= P11_ENUMERATE_CORRELATE;
	ret = (format) (&ex, argv[0]) ? 0 : 1;

	p11_enumerate_cleanup (&ex);
	return ret;
}

int
p11_trust_extract_compat (int argc,
                          char *argv[])
{
	char *path = NULL;
	int error;

	argv[argc] = NULL;

	/*
	 * For compatibility with people who deployed p11-kit 0.18.x
	 * before trust stuff was put into its own branch.
	 */
	path = p11_path_build (PRIVATEDIR, "p11-kit-extract-trust", NULL);
	return_val_if_fail (path != NULL, 1);
	execv (path, argv);
	error = errno;

	if (error == ENOENT) {
		free (path);
		path = p11_path_build (PRIVATEDIR, "trust-extract-compat", NULL);
		return_val_if_fail (path != NULL, 1);
		execv (path, argv);
		error = errno;
	}

	/* At this point we have no command */
	p11_message_err (error, "could not run %s command", path);

	free (path);
	return 2;
}