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source: vbox/trunk/src/libs/openssl-1.1.1g/ssl/ssl_conf.c@ 86352

最後變更 在這個檔案從86352是 83916,由 vboxsync 提交於 5 年 前

openssl-1.1.1g: Applied and adjusted our OpenSSL changes to 1.1.1g. bugref:9719
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1/*
2 * Copyright 2012-2018 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the OpenSSL license (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
8 */
9
10#include <stdio.h>
11#include "ssl_local.h"
12#include <openssl/conf.h>
13#include <openssl/objects.h>
14#include <openssl/dh.h>
15#include "internal/nelem.h"
16
17/*
18 * structure holding name tables. This is used for permitted elements in lists
19 * such as TLSv1.
20 */
21
22typedef struct {
23 const char *name;
24 int namelen;
25 unsigned int name_flags;
26 unsigned long option_value;
27} ssl_flag_tbl;
28
29/* Switch table: use for single command line switches like no_tls2 */
30typedef struct {
31 unsigned long option_value;
32 unsigned int name_flags;
33} ssl_switch_tbl;
34
35/* Sense of name is inverted e.g. "TLSv1" will clear SSL_OP_NO_TLSv1 */
36#define SSL_TFLAG_INV 0x1
37/* Mask for type of flag referred to */
38#define SSL_TFLAG_TYPE_MASK 0xf00
39/* Flag is for options */
40#define SSL_TFLAG_OPTION 0x000
41/* Flag is for cert_flags */
42#define SSL_TFLAG_CERT 0x100
43/* Flag is for verify mode */
44#define SSL_TFLAG_VFY 0x200
45/* Option can only be used for clients */
46#define SSL_TFLAG_CLIENT SSL_CONF_FLAG_CLIENT
47/* Option can only be used for servers */
48#define SSL_TFLAG_SERVER SSL_CONF_FLAG_SERVER
49#define SSL_TFLAG_BOTH (SSL_TFLAG_CLIENT|SSL_TFLAG_SERVER)
50
51#define SSL_FLAG_TBL(str, flag) \
52 {str, (int)(sizeof(str) - 1), SSL_TFLAG_BOTH, flag}
53#define SSL_FLAG_TBL_SRV(str, flag) \
54 {str, (int)(sizeof(str) - 1), SSL_TFLAG_SERVER, flag}
55#define SSL_FLAG_TBL_CLI(str, flag) \
56 {str, (int)(sizeof(str) - 1), SSL_TFLAG_CLIENT, flag}
57#define SSL_FLAG_TBL_INV(str, flag) \
58 {str, (int)(sizeof(str) - 1), SSL_TFLAG_INV|SSL_TFLAG_BOTH, flag}
59#define SSL_FLAG_TBL_SRV_INV(str, flag) \
60 {str, (int)(sizeof(str) - 1), SSL_TFLAG_INV|SSL_TFLAG_SERVER, flag}
61#define SSL_FLAG_TBL_CERT(str, flag) \
62 {str, (int)(sizeof(str) - 1), SSL_TFLAG_CERT|SSL_TFLAG_BOTH, flag}
63
64#define SSL_FLAG_VFY_CLI(str, flag) \
65 {str, (int)(sizeof(str) - 1), SSL_TFLAG_VFY | SSL_TFLAG_CLIENT, flag}
66#define SSL_FLAG_VFY_SRV(str, flag) \
67 {str, (int)(sizeof(str) - 1), SSL_TFLAG_VFY | SSL_TFLAG_SERVER, flag}
68
69/*
70 * Opaque structure containing SSL configuration context.
71 */
72
73struct ssl_conf_ctx_st {
74 /*
75 * Various flags indicating (among other things) which options we will
76 * recognise.
77 */
78 unsigned int flags;
79 /* Prefix and length of commands */
80 char *prefix;
81 size_t prefixlen;
82 /* SSL_CTX or SSL structure to perform operations on */
83 SSL_CTX *ctx;
84 SSL *ssl;
85 /* Pointer to SSL or SSL_CTX options field or NULL if none */
86 uint32_t *poptions;
87 /* Certificate filenames for each type */
88 char *cert_filename[SSL_PKEY_NUM];
89 /* Pointer to SSL or SSL_CTX cert_flags or NULL if none */
90 uint32_t *pcert_flags;
91 /* Pointer to SSL or SSL_CTX verify_mode or NULL if none */
92 uint32_t *pvfy_flags;
93 /* Pointer to SSL or SSL_CTX min_version field or NULL if none */
94 int *min_version;
95 /* Pointer to SSL or SSL_CTX max_version field or NULL if none */
96 int *max_version;
97 /* Current flag table being worked on */
98 const ssl_flag_tbl *tbl;
99 /* Size of table */
100 size_t ntbl;
101 /* Client CA names */
102 STACK_OF(X509_NAME) *canames;
103};
104
105static void ssl_set_option(SSL_CONF_CTX *cctx, unsigned int name_flags,
106 unsigned long option_value, int onoff)
107{
108 uint32_t *pflags;
109 if (cctx->poptions == NULL)
110 return;
111 if (name_flags & SSL_TFLAG_INV)
112 onoff ^= 1;
113 switch (name_flags & SSL_TFLAG_TYPE_MASK) {
114
115 case SSL_TFLAG_CERT:
116 pflags = cctx->pcert_flags;
117 break;
118
119 case SSL_TFLAG_VFY:
120 pflags = cctx->pvfy_flags;
121 break;
122
123 case SSL_TFLAG_OPTION:
124 pflags = cctx->poptions;
125 break;
126
127 default:
128 return;
129
130 }
131 if (onoff)
132 *pflags |= option_value;
133 else
134 *pflags &= ~option_value;
135}
136
137static int ssl_match_option(SSL_CONF_CTX *cctx, const ssl_flag_tbl *tbl,
138 const char *name, int namelen, int onoff)
139{
140 /* If name not relevant for context skip */
141 if (!(cctx->flags & tbl->name_flags & SSL_TFLAG_BOTH))
142 return 0;
143 if (namelen == -1) {
144 if (strcmp(tbl->name, name))
145 return 0;
146 } else if (tbl->namelen != namelen || strncasecmp(tbl->name, name, namelen))
147 return 0;
148 ssl_set_option(cctx, tbl->name_flags, tbl->option_value, onoff);
149 return 1;
150}
151
152static int ssl_set_option_list(const char *elem, int len, void *usr)
153{
154 SSL_CONF_CTX *cctx = usr;
155 size_t i;
156 const ssl_flag_tbl *tbl;
157 int onoff = 1;
158 /*
159 * len == -1 indicates not being called in list context, just for single
160 * command line switches, so don't allow +, -.
161 */
162 if (elem == NULL)
163 return 0;
164 if (len != -1) {
165 if (*elem == '+') {
166 elem++;
167 len--;
168 onoff = 1;
169 } else if (*elem == '-') {
170 elem++;
171 len--;
172 onoff = 0;
173 }
174 }
175 for (i = 0, tbl = cctx->tbl; i < cctx->ntbl; i++, tbl++) {
176 if (ssl_match_option(cctx, tbl, elem, len, onoff))
177 return 1;
178 }
179 return 0;
180}
181
182/* Set supported signature algorithms */
183static int cmd_SignatureAlgorithms(SSL_CONF_CTX *cctx, const char *value)
184{
185 int rv;
186 if (cctx->ssl)
187 rv = SSL_set1_sigalgs_list(cctx->ssl, value);
188 /* NB: ctx == NULL performs syntax checking only */
189 else
190 rv = SSL_CTX_set1_sigalgs_list(cctx->ctx, value);
191 return rv > 0;
192}
193
194/* Set supported client signature algorithms */
195static int cmd_ClientSignatureAlgorithms(SSL_CONF_CTX *cctx, const char *value)
196{
197 int rv;
198 if (cctx->ssl)
199 rv = SSL_set1_client_sigalgs_list(cctx->ssl, value);
200 /* NB: ctx == NULL performs syntax checking only */
201 else
202 rv = SSL_CTX_set1_client_sigalgs_list(cctx->ctx, value);
203 return rv > 0;
204}
205
206static int cmd_Groups(SSL_CONF_CTX *cctx, const char *value)
207{
208 int rv;
209 if (cctx->ssl)
210 rv = SSL_set1_groups_list(cctx->ssl, value);
211 /* NB: ctx == NULL performs syntax checking only */
212 else
213 rv = SSL_CTX_set1_groups_list(cctx->ctx, value);
214 return rv > 0;
215}
216
217/* This is the old name for cmd_Groups - retained for backwards compatibility */
218static int cmd_Curves(SSL_CONF_CTX *cctx, const char *value)
219{
220 return cmd_Groups(cctx, value);
221}
222
223#ifndef OPENSSL_NO_EC
224/* ECDH temporary parameters */
225static int cmd_ECDHParameters(SSL_CONF_CTX *cctx, const char *value)
226{
227 int rv = 1;
228 EC_KEY *ecdh;
229 int nid;
230
231 /* Ignore values supported by 1.0.2 for the automatic selection */
232 if ((cctx->flags & SSL_CONF_FLAG_FILE)
233 && (strcasecmp(value, "+automatic") == 0
234 || strcasecmp(value, "automatic") == 0))
235 return 1;
236 if ((cctx->flags & SSL_CONF_FLAG_CMDLINE) &&
237 strcmp(value, "auto") == 0)
238 return 1;
239
240 nid = EC_curve_nist2nid(value);
241 if (nid == NID_undef)
242 nid = OBJ_sn2nid(value);
243 if (nid == 0)
244 return 0;
245 ecdh = EC_KEY_new_by_curve_name(nid);
246 if (!ecdh)
247 return 0;
248 if (cctx->ctx)
249 rv = SSL_CTX_set_tmp_ecdh(cctx->ctx, ecdh);
250 else if (cctx->ssl)
251 rv = SSL_set_tmp_ecdh(cctx->ssl, ecdh);
252 EC_KEY_free(ecdh);
253
254 return rv > 0;
255}
256#endif
257static int cmd_CipherString(SSL_CONF_CTX *cctx, const char *value)
258{
259 int rv = 1;
260
261 if (cctx->ctx)
262 rv = SSL_CTX_set_cipher_list(cctx->ctx, value);
263 if (cctx->ssl)
264 rv = SSL_set_cipher_list(cctx->ssl, value);
265 return rv > 0;
266}
267
268static int cmd_Ciphersuites(SSL_CONF_CTX *cctx, const char *value)
269{
270 int rv = 1;
271
272 if (cctx->ctx)
273 rv = SSL_CTX_set_ciphersuites(cctx->ctx, value);
274 if (cctx->ssl)
275 rv = SSL_set_ciphersuites(cctx->ssl, value);
276 return rv > 0;
277}
278
279static int cmd_Protocol(SSL_CONF_CTX *cctx, const char *value)
280{
281 static const ssl_flag_tbl ssl_protocol_list[] = {
282 SSL_FLAG_TBL_INV("ALL", SSL_OP_NO_SSL_MASK),
283 SSL_FLAG_TBL_INV("SSLv2", SSL_OP_NO_SSLv2),
284 SSL_FLAG_TBL_INV("SSLv3", SSL_OP_NO_SSLv3),
285 SSL_FLAG_TBL_INV("TLSv1", SSL_OP_NO_TLSv1),
286 SSL_FLAG_TBL_INV("TLSv1.1", SSL_OP_NO_TLSv1_1),
287 SSL_FLAG_TBL_INV("TLSv1.2", SSL_OP_NO_TLSv1_2),
288 SSL_FLAG_TBL_INV("TLSv1.3", SSL_OP_NO_TLSv1_3),
289 SSL_FLAG_TBL_INV("DTLSv1", SSL_OP_NO_DTLSv1),
290 SSL_FLAG_TBL_INV("DTLSv1.2", SSL_OP_NO_DTLSv1_2)
291 };
292 cctx->tbl = ssl_protocol_list;
293 cctx->ntbl = OSSL_NELEM(ssl_protocol_list);
294 return CONF_parse_list(value, ',', 1, ssl_set_option_list, cctx);
295}
296
297/*
298 * protocol_from_string - converts a protocol version string to a number
299 *
300 * Returns -1 on failure or the version on success
301 */
302static int protocol_from_string(const char *value)
303{
304 struct protocol_versions {
305 const char *name;
306 int version;
307 };
308 static const struct protocol_versions versions[] = {
309 {"None", 0},
310 {"SSLv3", SSL3_VERSION},
311 {"TLSv1", TLS1_VERSION},
312 {"TLSv1.1", TLS1_1_VERSION},
313 {"TLSv1.2", TLS1_2_VERSION},
314 {"TLSv1.3", TLS1_3_VERSION},
315 {"DTLSv1", DTLS1_VERSION},
316 {"DTLSv1.2", DTLS1_2_VERSION}
317 };
318 size_t i;
319 size_t n = OSSL_NELEM(versions);
320
321 for (i = 0; i < n; i++)
322 if (strcmp(versions[i].name, value) == 0)
323 return versions[i].version;
324 return -1;
325}
326
327static int min_max_proto(SSL_CONF_CTX *cctx, const char *value, int *bound)
328{
329 int method_version;
330 int new_version;
331
332 if (cctx->ctx != NULL)
333 method_version = cctx->ctx->method->version;
334 else if (cctx->ssl != NULL)
335 method_version = cctx->ssl->ctx->method->version;
336 else
337 return 0;
338 if ((new_version = protocol_from_string(value)) < 0)
339 return 0;
340 return ssl_set_version_bound(method_version, new_version, bound);
341}
342
343/*
344 * cmd_MinProtocol - Set min protocol version
345 * @cctx: config structure to save settings in
346 * @value: The min protocol version in string form
347 *
348 * Returns 1 on success and 0 on failure.
349 */
350static int cmd_MinProtocol(SSL_CONF_CTX *cctx, const char *value)
351{
352 return min_max_proto(cctx, value, cctx->min_version);
353}
354
355/*
356 * cmd_MaxProtocol - Set max protocol version
357 * @cctx: config structure to save settings in
358 * @value: The max protocol version in string form
359 *
360 * Returns 1 on success and 0 on failure.
361 */
362static int cmd_MaxProtocol(SSL_CONF_CTX *cctx, const char *value)
363{
364 return min_max_proto(cctx, value, cctx->max_version);
365}
366
367static int cmd_Options(SSL_CONF_CTX *cctx, const char *value)
368{
369 static const ssl_flag_tbl ssl_option_list[] = {
370 SSL_FLAG_TBL_INV("SessionTicket", SSL_OP_NO_TICKET),
371 SSL_FLAG_TBL_INV("EmptyFragments",
372 SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS),
373 SSL_FLAG_TBL("Bugs", SSL_OP_ALL),
374 SSL_FLAG_TBL_INV("Compression", SSL_OP_NO_COMPRESSION),
375 SSL_FLAG_TBL_SRV("ServerPreference", SSL_OP_CIPHER_SERVER_PREFERENCE),
376 SSL_FLAG_TBL_SRV("NoResumptionOnRenegotiation",
377 SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION),
378 SSL_FLAG_TBL_SRV("DHSingle", SSL_OP_SINGLE_DH_USE),
379 SSL_FLAG_TBL_SRV("ECDHSingle", SSL_OP_SINGLE_ECDH_USE),
380 SSL_FLAG_TBL("UnsafeLegacyRenegotiation",
381 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION),
382 SSL_FLAG_TBL_INV("EncryptThenMac", SSL_OP_NO_ENCRYPT_THEN_MAC),
383 SSL_FLAG_TBL("NoRenegotiation", SSL_OP_NO_RENEGOTIATION),
384 SSL_FLAG_TBL("AllowNoDHEKEX", SSL_OP_ALLOW_NO_DHE_KEX),
385 SSL_FLAG_TBL("PrioritizeChaCha", SSL_OP_PRIORITIZE_CHACHA),
386 SSL_FLAG_TBL("MiddleboxCompat", SSL_OP_ENABLE_MIDDLEBOX_COMPAT),
387 SSL_FLAG_TBL_INV("AntiReplay", SSL_OP_NO_ANTI_REPLAY)
388 };
389 if (value == NULL)
390 return -3;
391 cctx->tbl = ssl_option_list;
392 cctx->ntbl = OSSL_NELEM(ssl_option_list);
393 return CONF_parse_list(value, ',', 1, ssl_set_option_list, cctx);
394}
395
396static int cmd_VerifyMode(SSL_CONF_CTX *cctx, const char *value)
397{
398 static const ssl_flag_tbl ssl_vfy_list[] = {
399 SSL_FLAG_VFY_CLI("Peer", SSL_VERIFY_PEER),
400 SSL_FLAG_VFY_SRV("Request", SSL_VERIFY_PEER),
401 SSL_FLAG_VFY_SRV("Require",
402 SSL_VERIFY_PEER | SSL_VERIFY_FAIL_IF_NO_PEER_CERT),
403 SSL_FLAG_VFY_SRV("Once", SSL_VERIFY_PEER | SSL_VERIFY_CLIENT_ONCE),
404 SSL_FLAG_VFY_SRV("RequestPostHandshake",
405 SSL_VERIFY_PEER | SSL_VERIFY_POST_HANDSHAKE),
406 SSL_FLAG_VFY_SRV("RequirePostHandshake",
407 SSL_VERIFY_PEER | SSL_VERIFY_POST_HANDSHAKE |
408 SSL_VERIFY_FAIL_IF_NO_PEER_CERT),
409 };
410 if (value == NULL)
411 return -3;
412 cctx->tbl = ssl_vfy_list;
413 cctx->ntbl = OSSL_NELEM(ssl_vfy_list);
414 return CONF_parse_list(value, ',', 1, ssl_set_option_list, cctx);
415}
416
417static int cmd_Certificate(SSL_CONF_CTX *cctx, const char *value)
418{
419 int rv = 1;
420 CERT *c = NULL;
421 if (cctx->ctx) {
422 rv = SSL_CTX_use_certificate_chain_file(cctx->ctx, value);
423 c = cctx->ctx->cert;
424 }
425 if (cctx->ssl) {
426 rv = SSL_use_certificate_chain_file(cctx->ssl, value);
427 c = cctx->ssl->cert;
428 }
429 if (rv > 0 && c && cctx->flags & SSL_CONF_FLAG_REQUIRE_PRIVATE) {
430 char **pfilename = &cctx->cert_filename[c->key - c->pkeys];
431 OPENSSL_free(*pfilename);
432 *pfilename = OPENSSL_strdup(value);
433 if (!*pfilename)
434 rv = 0;
435 }
436
437 return rv > 0;
438}
439
440static int cmd_PrivateKey(SSL_CONF_CTX *cctx, const char *value)
441{
442 int rv = 1;
443 if (!(cctx->flags & SSL_CONF_FLAG_CERTIFICATE))
444 return -2;
445 if (cctx->ctx)
446 rv = SSL_CTX_use_PrivateKey_file(cctx->ctx, value, SSL_FILETYPE_PEM);
447 if (cctx->ssl)
448 rv = SSL_use_PrivateKey_file(cctx->ssl, value, SSL_FILETYPE_PEM);
449 return rv > 0;
450}
451
452static int cmd_ServerInfoFile(SSL_CONF_CTX *cctx, const char *value)
453{
454 int rv = 1;
455 if (cctx->ctx)
456 rv = SSL_CTX_use_serverinfo_file(cctx->ctx, value);
457 return rv > 0;
458}
459
460static int do_store(SSL_CONF_CTX *cctx,
461 const char *CAfile, const char *CApath, int verify_store)
462{
463 CERT *cert;
464 X509_STORE **st;
465 if (cctx->ctx)
466 cert = cctx->ctx->cert;
467 else if (cctx->ssl)
468 cert = cctx->ssl->cert;
469 else
470 return 1;
471 st = verify_store ? &cert->verify_store : &cert->chain_store;
472 if (*st == NULL) {
473 *st = X509_STORE_new();
474 if (*st == NULL)
475 return 0;
476 }
477 return X509_STORE_load_locations(*st, CAfile, CApath) > 0;
478}
479
480static int cmd_ChainCAPath(SSL_CONF_CTX *cctx, const char *value)
481{
482 return do_store(cctx, NULL, value, 0);
483}
484
485static int cmd_ChainCAFile(SSL_CONF_CTX *cctx, const char *value)
486{
487 return do_store(cctx, value, NULL, 0);
488}
489
490static int cmd_VerifyCAPath(SSL_CONF_CTX *cctx, const char *value)
491{
492 return do_store(cctx, NULL, value, 1);
493}
494
495static int cmd_VerifyCAFile(SSL_CONF_CTX *cctx, const char *value)
496{
497 return do_store(cctx, value, NULL, 1);
498}
499
500static int cmd_RequestCAFile(SSL_CONF_CTX *cctx, const char *value)
501{
502 if (cctx->canames == NULL)
503 cctx->canames = sk_X509_NAME_new_null();
504 if (cctx->canames == NULL)
505 return 0;
506 return SSL_add_file_cert_subjects_to_stack(cctx->canames, value);
507}
508
509static int cmd_ClientCAFile(SSL_CONF_CTX *cctx, const char *value)
510{
511 return cmd_RequestCAFile(cctx, value);
512}
513
514static int cmd_RequestCAPath(SSL_CONF_CTX *cctx, const char *value)
515{
516 if (cctx->canames == NULL)
517 cctx->canames = sk_X509_NAME_new_null();
518 if (cctx->canames == NULL)
519 return 0;
520 return SSL_add_dir_cert_subjects_to_stack(cctx->canames, value);
521}
522
523static int cmd_ClientCAPath(SSL_CONF_CTX *cctx, const char *value)
524{
525 return cmd_RequestCAPath(cctx, value);
526}
527
528#ifndef OPENSSL_NO_DH
529static int cmd_DHParameters(SSL_CONF_CTX *cctx, const char *value)
530{
531 int rv = 0;
532 DH *dh = NULL;
533 BIO *in = NULL;
534 if (cctx->ctx || cctx->ssl) {
535 in = BIO_new(BIO_s_file());
536 if (in == NULL)
537 goto end;
538 if (BIO_read_filename(in, value) <= 0)
539 goto end;
540 dh = PEM_read_bio_DHparams(in, NULL, NULL, NULL);
541 if (dh == NULL)
542 goto end;
543 } else
544 return 1;
545 if (cctx->ctx)
546 rv = SSL_CTX_set_tmp_dh(cctx->ctx, dh);
547 if (cctx->ssl)
548 rv = SSL_set_tmp_dh(cctx->ssl, dh);
549 end:
550 DH_free(dh);
551 BIO_free(in);
552 return rv > 0;
553}
554#endif
555
556static int cmd_RecordPadding(SSL_CONF_CTX *cctx, const char *value)
557{
558 int rv = 0;
559 int block_size = atoi(value);
560
561 /*
562 * All we care about is a non-negative value,
563 * the setters check the range
564 */
565 if (block_size >= 0) {
566 if (cctx->ctx)
567 rv = SSL_CTX_set_block_padding(cctx->ctx, block_size);
568 if (cctx->ssl)
569 rv = SSL_set_block_padding(cctx->ssl, block_size);
570 }
571 return rv;
572}
573
574
575static int cmd_NumTickets(SSL_CONF_CTX *cctx, const char *value)
576{
577 int rv = 0;
578 int num_tickets = atoi(value);
579
580 if (num_tickets >= 0) {
581 if (cctx->ctx)
582 rv = SSL_CTX_set_num_tickets(cctx->ctx, num_tickets);
583 if (cctx->ssl)
584 rv = SSL_set_num_tickets(cctx->ssl, num_tickets);
585 }
586 return rv;
587}
588
589typedef struct {
590 int (*cmd) (SSL_CONF_CTX *cctx, const char *value);
591 const char *str_file;
592 const char *str_cmdline;
593 unsigned short flags;
594 unsigned short value_type;
595} ssl_conf_cmd_tbl;
596
597/* Table of supported parameters */
598
599#define SSL_CONF_CMD(name, cmdopt, flags, type) \
600 {cmd_##name, #name, cmdopt, flags, type}
601
602#define SSL_CONF_CMD_STRING(name, cmdopt, flags) \
603 SSL_CONF_CMD(name, cmdopt, flags, SSL_CONF_TYPE_STRING)
604
605#define SSL_CONF_CMD_SWITCH(name, flags) \
606 {0, NULL, name, flags, SSL_CONF_TYPE_NONE}
607
608/* See apps/apps.h if you change this table. */
609static const ssl_conf_cmd_tbl ssl_conf_cmds[] = {
610 SSL_CONF_CMD_SWITCH("no_ssl3", 0),
611 SSL_CONF_CMD_SWITCH("no_tls1", 0),
612 SSL_CONF_CMD_SWITCH("no_tls1_1", 0),
613 SSL_CONF_CMD_SWITCH("no_tls1_2", 0),
614 SSL_CONF_CMD_SWITCH("no_tls1_3", 0),
615 SSL_CONF_CMD_SWITCH("bugs", 0),
616 SSL_CONF_CMD_SWITCH("no_comp", 0),
617 SSL_CONF_CMD_SWITCH("comp", 0),
618 SSL_CONF_CMD_SWITCH("ecdh_single", SSL_CONF_FLAG_SERVER),
619 SSL_CONF_CMD_SWITCH("no_ticket", 0),
620 SSL_CONF_CMD_SWITCH("serverpref", SSL_CONF_FLAG_SERVER),
621 SSL_CONF_CMD_SWITCH("legacy_renegotiation", 0),
622 SSL_CONF_CMD_SWITCH("legacy_server_connect", SSL_CONF_FLAG_SERVER),
623 SSL_CONF_CMD_SWITCH("no_renegotiation", 0),
624 SSL_CONF_CMD_SWITCH("no_resumption_on_reneg", SSL_CONF_FLAG_SERVER),
625 SSL_CONF_CMD_SWITCH("no_legacy_server_connect", SSL_CONF_FLAG_SERVER),
626 SSL_CONF_CMD_SWITCH("allow_no_dhe_kex", 0),
627 SSL_CONF_CMD_SWITCH("prioritize_chacha", SSL_CONF_FLAG_SERVER),
628 SSL_CONF_CMD_SWITCH("strict", 0),
629 SSL_CONF_CMD_SWITCH("no_middlebox", 0),
630 SSL_CONF_CMD_SWITCH("anti_replay", SSL_CONF_FLAG_SERVER),
631 SSL_CONF_CMD_SWITCH("no_anti_replay", SSL_CONF_FLAG_SERVER),
632 SSL_CONF_CMD_STRING(SignatureAlgorithms, "sigalgs", 0),
633 SSL_CONF_CMD_STRING(ClientSignatureAlgorithms, "client_sigalgs", 0),
634 SSL_CONF_CMD_STRING(Curves, "curves", 0),
635 SSL_CONF_CMD_STRING(Groups, "groups", 0),
636#ifndef OPENSSL_NO_EC
637 SSL_CONF_CMD_STRING(ECDHParameters, "named_curve", SSL_CONF_FLAG_SERVER),
638#endif
639 SSL_CONF_CMD_STRING(CipherString, "cipher", 0),
640 SSL_CONF_CMD_STRING(Ciphersuites, "ciphersuites", 0),
641 SSL_CONF_CMD_STRING(Protocol, NULL, 0),
642 SSL_CONF_CMD_STRING(MinProtocol, "min_protocol", 0),
643 SSL_CONF_CMD_STRING(MaxProtocol, "max_protocol", 0),
644 SSL_CONF_CMD_STRING(Options, NULL, 0),
645 SSL_CONF_CMD_STRING(VerifyMode, NULL, 0),
646 SSL_CONF_CMD(Certificate, "cert", SSL_CONF_FLAG_CERTIFICATE,
647 SSL_CONF_TYPE_FILE),
648 SSL_CONF_CMD(PrivateKey, "key", SSL_CONF_FLAG_CERTIFICATE,
649 SSL_CONF_TYPE_FILE),
650 SSL_CONF_CMD(ServerInfoFile, NULL,
651 SSL_CONF_FLAG_SERVER | SSL_CONF_FLAG_CERTIFICATE,
652 SSL_CONF_TYPE_FILE),
653 SSL_CONF_CMD(ChainCAPath, "chainCApath", SSL_CONF_FLAG_CERTIFICATE,
654 SSL_CONF_TYPE_DIR),
655 SSL_CONF_CMD(ChainCAFile, "chainCAfile", SSL_CONF_FLAG_CERTIFICATE,
656 SSL_CONF_TYPE_FILE),
657 SSL_CONF_CMD(VerifyCAPath, "verifyCApath", SSL_CONF_FLAG_CERTIFICATE,
658 SSL_CONF_TYPE_DIR),
659 SSL_CONF_CMD(VerifyCAFile, "verifyCAfile", SSL_CONF_FLAG_CERTIFICATE,
660 SSL_CONF_TYPE_FILE),
661 SSL_CONF_CMD(RequestCAFile, "requestCAFile", SSL_CONF_FLAG_CERTIFICATE,
662 SSL_CONF_TYPE_FILE),
663 SSL_CONF_CMD(ClientCAFile, NULL,
664 SSL_CONF_FLAG_SERVER | SSL_CONF_FLAG_CERTIFICATE,
665 SSL_CONF_TYPE_FILE),
666 SSL_CONF_CMD(RequestCAPath, NULL, SSL_CONF_FLAG_CERTIFICATE,
667 SSL_CONF_TYPE_DIR),
668 SSL_CONF_CMD(ClientCAPath, NULL,
669 SSL_CONF_FLAG_SERVER | SSL_CONF_FLAG_CERTIFICATE,
670 SSL_CONF_TYPE_DIR),
671#ifndef OPENSSL_NO_DH
672 SSL_CONF_CMD(DHParameters, "dhparam",
673 SSL_CONF_FLAG_SERVER | SSL_CONF_FLAG_CERTIFICATE,
674 SSL_CONF_TYPE_FILE),
675#endif
676 SSL_CONF_CMD_STRING(RecordPadding, "record_padding", 0),
677 SSL_CONF_CMD_STRING(NumTickets, "num_tickets", SSL_CONF_FLAG_SERVER),
678};
679
680/* Supported switches: must match order of switches in ssl_conf_cmds */
681static const ssl_switch_tbl ssl_cmd_switches[] = {
682 {SSL_OP_NO_SSLv3, 0}, /* no_ssl3 */
683 {SSL_OP_NO_TLSv1, 0}, /* no_tls1 */
684 {SSL_OP_NO_TLSv1_1, 0}, /* no_tls1_1 */
685 {SSL_OP_NO_TLSv1_2, 0}, /* no_tls1_2 */
686 {SSL_OP_NO_TLSv1_3, 0}, /* no_tls1_3 */
687 {SSL_OP_ALL, 0}, /* bugs */
688 {SSL_OP_NO_COMPRESSION, 0}, /* no_comp */
689 {SSL_OP_NO_COMPRESSION, SSL_TFLAG_INV}, /* comp */
690 {SSL_OP_SINGLE_ECDH_USE, 0}, /* ecdh_single */
691 {SSL_OP_NO_TICKET, 0}, /* no_ticket */
692 {SSL_OP_CIPHER_SERVER_PREFERENCE, 0}, /* serverpref */
693 /* legacy_renegotiation */
694 {SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION, 0},
695 /* legacy_server_connect */
696 {SSL_OP_LEGACY_SERVER_CONNECT, 0},
697 /* no_renegotiation */
698 {SSL_OP_NO_RENEGOTIATION, 0},
699 /* no_resumption_on_reneg */
700 {SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION, 0},
701 /* no_legacy_server_connect */
702 {SSL_OP_LEGACY_SERVER_CONNECT, SSL_TFLAG_INV},
703 /* allow_no_dhe_kex */
704 {SSL_OP_ALLOW_NO_DHE_KEX, 0},
705 /* chacha reprioritization */
706 {SSL_OP_PRIORITIZE_CHACHA, 0},
707 {SSL_CERT_FLAG_TLS_STRICT, SSL_TFLAG_CERT}, /* strict */
708 /* no_middlebox */
709 {SSL_OP_ENABLE_MIDDLEBOX_COMPAT, SSL_TFLAG_INV},
710 /* anti_replay */
711 {SSL_OP_NO_ANTI_REPLAY, SSL_TFLAG_INV},
712 /* no_anti_replay */
713 {SSL_OP_NO_ANTI_REPLAY, 0},
714};
715
716static int ssl_conf_cmd_skip_prefix(SSL_CONF_CTX *cctx, const char **pcmd)
717{
718 if (!pcmd || !*pcmd)
719 return 0;
720 /* If a prefix is set, check and skip */
721 if (cctx->prefix) {
722 if (strlen(*pcmd) <= cctx->prefixlen)
723 return 0;
724 if (cctx->flags & SSL_CONF_FLAG_CMDLINE &&
725 strncmp(*pcmd, cctx->prefix, cctx->prefixlen))
726 return 0;
727 if (cctx->flags & SSL_CONF_FLAG_FILE &&
728 strncasecmp(*pcmd, cctx->prefix, cctx->prefixlen))
729 return 0;
730 *pcmd += cctx->prefixlen;
731 } else if (cctx->flags & SSL_CONF_FLAG_CMDLINE) {
732 if (**pcmd != '-' || !(*pcmd)[1])
733 return 0;
734 *pcmd += 1;
735 }
736 return 1;
737}
738
739/* Determine if a command is allowed according to cctx flags */
740static int ssl_conf_cmd_allowed(SSL_CONF_CTX *cctx, const ssl_conf_cmd_tbl * t)
741{
742 unsigned int tfl = t->flags;
743 unsigned int cfl = cctx->flags;
744 if ((tfl & SSL_CONF_FLAG_SERVER) && !(cfl & SSL_CONF_FLAG_SERVER))
745 return 0;
746 if ((tfl & SSL_CONF_FLAG_CLIENT) && !(cfl & SSL_CONF_FLAG_CLIENT))
747 return 0;
748 if ((tfl & SSL_CONF_FLAG_CERTIFICATE)
749 && !(cfl & SSL_CONF_FLAG_CERTIFICATE))
750 return 0;
751 return 1;
752}
753
754static const ssl_conf_cmd_tbl *ssl_conf_cmd_lookup(SSL_CONF_CTX *cctx,
755 const char *cmd)
756{
757 const ssl_conf_cmd_tbl *t;
758 size_t i;
759 if (cmd == NULL)
760 return NULL;
761
762 /* Look for matching parameter name in table */
763 for (i = 0, t = ssl_conf_cmds; i < OSSL_NELEM(ssl_conf_cmds); i++, t++) {
764 if (ssl_conf_cmd_allowed(cctx, t)) {
765 if (cctx->flags & SSL_CONF_FLAG_CMDLINE) {
766 if (t->str_cmdline && strcmp(t->str_cmdline, cmd) == 0)
767 return t;
768 }
769 if (cctx->flags & SSL_CONF_FLAG_FILE) {
770 if (t->str_file && strcasecmp(t->str_file, cmd) == 0)
771 return t;
772 }
773 }
774 }
775 return NULL;
776}
777
778static int ctrl_switch_option(SSL_CONF_CTX *cctx, const ssl_conf_cmd_tbl * cmd)
779{
780 /* Find index of command in table */
781 size_t idx = cmd - ssl_conf_cmds;
782 const ssl_switch_tbl *scmd;
783 /* Sanity check index */
784 if (idx >= OSSL_NELEM(ssl_cmd_switches))
785 return 0;
786 /* Obtain switches entry with same index */
787 scmd = ssl_cmd_switches + idx;
788 ssl_set_option(cctx, scmd->name_flags, scmd->option_value, 1);
789 return 1;
790}
791
792int SSL_CONF_cmd(SSL_CONF_CTX *cctx, const char *cmd, const char *value)
793{
794 const ssl_conf_cmd_tbl *runcmd;
795 if (cmd == NULL) {
796 SSLerr(SSL_F_SSL_CONF_CMD, SSL_R_INVALID_NULL_CMD_NAME);
797 return 0;
798 }
799
800 if (!ssl_conf_cmd_skip_prefix(cctx, &cmd))
801 return -2;
802
803 runcmd = ssl_conf_cmd_lookup(cctx, cmd);
804
805 if (runcmd) {
806 int rv;
807 if (runcmd->value_type == SSL_CONF_TYPE_NONE) {
808 return ctrl_switch_option(cctx, runcmd);
809 }
810 if (value == NULL)
811 return -3;
812 rv = runcmd->cmd(cctx, value);
813 if (rv > 0)
814 return 2;
815 if (rv == -2)
816 return -2;
817 if (cctx->flags & SSL_CONF_FLAG_SHOW_ERRORS) {
818 SSLerr(SSL_F_SSL_CONF_CMD, SSL_R_BAD_VALUE);
819 ERR_add_error_data(4, "cmd=", cmd, ", value=", value);
820 }
821 return 0;
822 }
823
824 if (cctx->flags & SSL_CONF_FLAG_SHOW_ERRORS) {
825 SSLerr(SSL_F_SSL_CONF_CMD, SSL_R_UNKNOWN_CMD_NAME);
826 ERR_add_error_data(2, "cmd=", cmd);
827 }
828
829 return -2;
830}
831
832int SSL_CONF_cmd_argv(SSL_CONF_CTX *cctx, int *pargc, char ***pargv)
833{
834 int rv;
835 const char *arg = NULL, *argn;
836 if (pargc && *pargc == 0)
837 return 0;
838 if (!pargc || *pargc > 0)
839 arg = **pargv;
840 if (arg == NULL)
841 return 0;
842 if (!pargc || *pargc > 1)
843 argn = (*pargv)[1];
844 else
845 argn = NULL;
846 cctx->flags &= ~SSL_CONF_FLAG_FILE;
847 cctx->flags |= SSL_CONF_FLAG_CMDLINE;
848 rv = SSL_CONF_cmd(cctx, arg, argn);
849 if (rv > 0) {
850 /* Success: update pargc, pargv */
851 (*pargv) += rv;
852 if (pargc)
853 (*pargc) -= rv;
854 return rv;
855 }
856 /* Unknown switch: indicate no arguments processed */
857 if (rv == -2)
858 return 0;
859 /* Some error occurred processing command, return fatal error */
860 if (rv == 0)
861 return -1;
862 return rv;
863}
864
865int SSL_CONF_cmd_value_type(SSL_CONF_CTX *cctx, const char *cmd)
866{
867 if (ssl_conf_cmd_skip_prefix(cctx, &cmd)) {
868 const ssl_conf_cmd_tbl *runcmd;
869 runcmd = ssl_conf_cmd_lookup(cctx, cmd);
870 if (runcmd)
871 return runcmd->value_type;
872 }
873 return SSL_CONF_TYPE_UNKNOWN;
874}
875
876SSL_CONF_CTX *SSL_CONF_CTX_new(void)
877{
878 SSL_CONF_CTX *ret = OPENSSL_zalloc(sizeof(*ret));
879
880 return ret;
881}
882
883int SSL_CONF_CTX_finish(SSL_CONF_CTX *cctx)
884{
885 /* See if any certificates are missing private keys */
886 size_t i;
887 CERT *c = NULL;
888 if (cctx->ctx)
889 c = cctx->ctx->cert;
890 else if (cctx->ssl)
891 c = cctx->ssl->cert;
892 if (c && cctx->flags & SSL_CONF_FLAG_REQUIRE_PRIVATE) {
893 for (i = 0; i < SSL_PKEY_NUM; i++) {
894 const char *p = cctx->cert_filename[i];
895 /*
896 * If missing private key try to load one from certificate file
897 */
898 if (p && !c->pkeys[i].privatekey) {
899 if (!cmd_PrivateKey(cctx, p))
900 return 0;
901 }
902 }
903 }
904 if (cctx->canames) {
905 if (cctx->ssl)
906 SSL_set0_CA_list(cctx->ssl, cctx->canames);
907 else if (cctx->ctx)
908 SSL_CTX_set0_CA_list(cctx->ctx, cctx->canames);
909 else
910 sk_X509_NAME_pop_free(cctx->canames, X509_NAME_free);
911 cctx->canames = NULL;
912 }
913 return 1;
914}
915
916void SSL_CONF_CTX_free(SSL_CONF_CTX *cctx)
917{
918 if (cctx) {
919 size_t i;
920 for (i = 0; i < SSL_PKEY_NUM; i++)
921 OPENSSL_free(cctx->cert_filename[i]);
922 OPENSSL_free(cctx->prefix);
923 sk_X509_NAME_pop_free(cctx->canames, X509_NAME_free);
924 OPENSSL_free(cctx);
925 }
926}
927
928unsigned int SSL_CONF_CTX_set_flags(SSL_CONF_CTX *cctx, unsigned int flags)
929{
930 cctx->flags |= flags;
931 return cctx->flags;
932}
933
934unsigned int SSL_CONF_CTX_clear_flags(SSL_CONF_CTX *cctx, unsigned int flags)
935{
936 cctx->flags &= ~flags;
937 return cctx->flags;
938}
939
940int SSL_CONF_CTX_set1_prefix(SSL_CONF_CTX *cctx, const char *pre)
941{
942 char *tmp = NULL;
943 if (pre) {
944 tmp = OPENSSL_strdup(pre);
945 if (tmp == NULL)
946 return 0;
947 }
948 OPENSSL_free(cctx->prefix);
949 cctx->prefix = tmp;
950 if (tmp)
951 cctx->prefixlen = strlen(tmp);
952 else
953 cctx->prefixlen = 0;
954 return 1;
955}
956
957void SSL_CONF_CTX_set_ssl(SSL_CONF_CTX *cctx, SSL *ssl)
958{
959 cctx->ssl = ssl;
960 cctx->ctx = NULL;
961 if (ssl) {
962 cctx->poptions = &ssl->options;
963 cctx->min_version = &ssl->min_proto_version;
964 cctx->max_version = &ssl->max_proto_version;
965 cctx->pcert_flags = &ssl->cert->cert_flags;
966 cctx->pvfy_flags = &ssl->verify_mode;
967 } else {
968 cctx->poptions = NULL;
969 cctx->min_version = NULL;
970 cctx->max_version = NULL;
971 cctx->pcert_flags = NULL;
972 cctx->pvfy_flags = NULL;
973 }
974}
975
976void SSL_CONF_CTX_set_ssl_ctx(SSL_CONF_CTX *cctx, SSL_CTX *ctx)
977{
978 cctx->ctx = ctx;
979 cctx->ssl = NULL;
980 if (ctx) {
981 cctx->poptions = &ctx->options;
982 cctx->min_version = &ctx->min_proto_version;
983 cctx->max_version = &ctx->max_proto_version;
984 cctx->pcert_flags = &ctx->cert->cert_flags;
985 cctx->pvfy_flags = &ctx->verify_mode;
986 } else {
987 cctx->poptions = NULL;
988 cctx->min_version = NULL;
989 cctx->max_version = NULL;
990 cctx->pcert_flags = NULL;
991 cctx->pvfy_flags = NULL;
992 }
993}
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