1 /*
2 * Copyright 2012-2024 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the Apache License 2.0 (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 "internal/e_os.h"
11
12 #include <stdio.h>
13 #include "ssl_local.h"
14 #include <openssl/conf.h>
15 #include <openssl/objects.h>
16 #include <openssl/decoder.h>
17 #include <openssl/core_dispatch.h>
18 #include "internal/nelem.h"
19
20 /*
21 * structure holding name tables. This is used for permitted elements in lists
22 * such as TLSv1.
23 */
24
25 typedef struct {
26 const char *name;
27 int namelen;
28 unsigned int name_flags;
29 uint64_t option_value;
30 } ssl_flag_tbl;
31
32 /* Switch table: use for single command line switches like no_tls2 */
33 typedef struct {
34 uint64_t option_value;
35 unsigned int name_flags;
36 } ssl_switch_tbl;
37
38 /* Sense of name is inverted e.g. "TLSv1" will clear SSL_OP_NO_TLSv1 */
39 #define SSL_TFLAG_INV 0x1
40 /* Mask for type of flag referred to */
41 #define SSL_TFLAG_TYPE_MASK 0xf00
42 /* Flag is for options */
43 #define SSL_TFLAG_OPTION 0x000
44 /* Flag is for cert_flags */
45 #define SSL_TFLAG_CERT 0x100
46 /* Flag is for verify mode */
47 #define SSL_TFLAG_VFY 0x200
48 /* Option can only be used for clients */
49 #define SSL_TFLAG_CLIENT SSL_CONF_FLAG_CLIENT
50 /* Option can only be used for servers */
51 #define SSL_TFLAG_SERVER SSL_CONF_FLAG_SERVER
52 #define SSL_TFLAG_BOTH (SSL_TFLAG_CLIENT|SSL_TFLAG_SERVER)
53
54 #define SSL_FLAG_TBL(str, flag) \
55 {str, (int)(sizeof(str) - 1), SSL_TFLAG_BOTH, flag}
56 #define SSL_FLAG_TBL_SRV(str, flag) \
57 {str, (int)(sizeof(str) - 1), SSL_TFLAG_SERVER, flag}
58 #define SSL_FLAG_TBL_CLI(str, flag) \
59 {str, (int)(sizeof(str) - 1), SSL_TFLAG_CLIENT, flag}
60 #define SSL_FLAG_TBL_INV(str, flag) \
61 {str, (int)(sizeof(str) - 1), SSL_TFLAG_INV|SSL_TFLAG_BOTH, flag}
62 #define SSL_FLAG_TBL_SRV_INV(str, flag) \
63 {str, (int)(sizeof(str) - 1), SSL_TFLAG_INV|SSL_TFLAG_SERVER, flag}
64 #define SSL_FLAG_TBL_CERT(str, flag) \
65 {str, (int)(sizeof(str) - 1), SSL_TFLAG_CERT|SSL_TFLAG_BOTH, flag}
66
67 #define SSL_FLAG_VFY_CLI(str, flag) \
68 {str, (int)(sizeof(str) - 1), SSL_TFLAG_VFY | SSL_TFLAG_CLIENT, flag}
69 #define SSL_FLAG_VFY_SRV(str, flag) \
70 {str, (int)(sizeof(str) - 1), SSL_TFLAG_VFY | SSL_TFLAG_SERVER, flag}
71
72 /*
73 * Opaque structure containing SSL configuration context.
74 */
75
76 struct ssl_conf_ctx_st {
77 /*
78 * Various flags indicating (among other things) which options we will
79 * recognise.
80 */
81 unsigned int flags;
82 /* Prefix and length of commands */
83 char *prefix;
84 size_t prefixlen;
85 /* SSL_CTX or SSL structure to perform operations on */
86 SSL_CTX *ctx;
87 SSL *ssl;
88 /* Pointer to SSL or SSL_CTX options field or NULL if none */
89 uint64_t *poptions;
90 /* Certificate filenames for each type */
91 char *cert_filename[SSL_PKEY_NUM];
92 /* Pointer to SSL or SSL_CTX cert_flags or NULL if none */
93 uint32_t *pcert_flags;
94 /* Pointer to SSL or SSL_CTX verify_mode or NULL if none */
95 uint32_t *pvfy_flags;
96 /* Pointer to SSL or SSL_CTX min_version field or NULL if none */
97 int *min_version;
98 /* Pointer to SSL or SSL_CTX max_version field or NULL if none */
99 int *max_version;
100 /* Current flag table being worked on */
101 const ssl_flag_tbl *tbl;
102 /* Size of table */
103 size_t ntbl;
104 /* Client CA names */
105 STACK_OF(X509_NAME) *canames;
106 };
107
ssl_set_option(SSL_CONF_CTX * cctx,unsigned int name_flags,uint64_t option_value,int onoff)108 static void ssl_set_option(SSL_CONF_CTX *cctx, unsigned int name_flags,
109 uint64_t option_value, int onoff)
110 {
111 uint32_t *pflags;
112
113 if (cctx->poptions == NULL)
114 return;
115 if (name_flags & SSL_TFLAG_INV)
116 onoff ^= 1;
117 switch (name_flags & SSL_TFLAG_TYPE_MASK) {
118
119 case SSL_TFLAG_CERT:
120 pflags = cctx->pcert_flags;
121 break;
122
123 case SSL_TFLAG_VFY:
124 pflags = cctx->pvfy_flags;
125 break;
126
127 case SSL_TFLAG_OPTION:
128 if (onoff)
129 *cctx->poptions |= option_value;
130 else
131 *cctx->poptions &= ~option_value;
132 return;
133
134 default:
135 return;
136
137 }
138 if (onoff)
139 *pflags |= option_value;
140 else
141 *pflags &= ~option_value;
142 }
143
ssl_match_option(SSL_CONF_CTX * cctx,const ssl_flag_tbl * tbl,const char * name,int namelen,int onoff)144 static int ssl_match_option(SSL_CONF_CTX *cctx, const ssl_flag_tbl *tbl,
145 const char *name, int namelen, int onoff)
146 {
147 /* If name not relevant for context skip */
148 if (!(cctx->flags & tbl->name_flags & SSL_TFLAG_BOTH))
149 return 0;
150 if (namelen == -1) {
151 if (strcmp(tbl->name, name))
152 return 0;
153 } else if (tbl->namelen != namelen
154 || OPENSSL_strncasecmp(tbl->name, name, namelen))
155 return 0;
156 ssl_set_option(cctx, tbl->name_flags, tbl->option_value, onoff);
157 return 1;
158 }
159
ssl_set_option_list(const char * elem,int len,void * usr)160 static int ssl_set_option_list(const char *elem, int len, void *usr)
161 {
162 SSL_CONF_CTX *cctx = usr;
163 size_t i;
164 const ssl_flag_tbl *tbl;
165 int onoff = 1;
166 /*
167 * len == -1 indicates not being called in list context, just for single
168 * command line switches, so don't allow +, -.
169 */
170 if (elem == NULL)
171 return 0;
172 if (len != -1) {
173 if (*elem == '+') {
174 elem++;
175 len--;
176 onoff = 1;
177 } else if (*elem == '-') {
178 elem++;
179 len--;
180 onoff = 0;
181 }
182 }
183 for (i = 0, tbl = cctx->tbl; i < cctx->ntbl; i++, tbl++) {
184 if (ssl_match_option(cctx, tbl, elem, len, onoff))
185 return 1;
186 }
187 return 0;
188 }
189
190 /* Set supported signature algorithms */
cmd_SignatureAlgorithms(SSL_CONF_CTX * cctx,const char * value)191 static int cmd_SignatureAlgorithms(SSL_CONF_CTX *cctx, const char *value)
192 {
193 int rv;
194 if (cctx->ssl)
195 rv = SSL_set1_sigalgs_list(cctx->ssl, value);
196 /* NB: ctx == NULL performs syntax checking only */
197 else
198 rv = SSL_CTX_set1_sigalgs_list(cctx->ctx, value);
199 return rv > 0;
200 }
201
202 /* Set supported client signature algorithms */
cmd_ClientSignatureAlgorithms(SSL_CONF_CTX * cctx,const char * value)203 static int cmd_ClientSignatureAlgorithms(SSL_CONF_CTX *cctx, const char *value)
204 {
205 int rv;
206 if (cctx->ssl)
207 rv = SSL_set1_client_sigalgs_list(cctx->ssl, value);
208 /* NB: ctx == NULL performs syntax checking only */
209 else
210 rv = SSL_CTX_set1_client_sigalgs_list(cctx->ctx, value);
211 return rv > 0;
212 }
213
cmd_Groups(SSL_CONF_CTX * cctx,const char * value)214 static int cmd_Groups(SSL_CONF_CTX *cctx, const char *value)
215 {
216 int rv;
217 if (cctx->ssl)
218 rv = SSL_set1_groups_list(cctx->ssl, value);
219 /* NB: ctx == NULL performs syntax checking only */
220 else
221 rv = SSL_CTX_set1_groups_list(cctx->ctx, value);
222 return rv > 0;
223 }
224
225 /* This is the old name for cmd_Groups - retained for backwards compatibility */
cmd_Curves(SSL_CONF_CTX * cctx,const char * value)226 static int cmd_Curves(SSL_CONF_CTX *cctx, const char *value)
227 {
228 return cmd_Groups(cctx, value);
229 }
230
231 /* ECDH temporary parameters */
cmd_ECDHParameters(SSL_CONF_CTX * cctx,const char * value)232 static int cmd_ECDHParameters(SSL_CONF_CTX *cctx, const char *value)
233 {
234 int rv = 1;
235
236 /* Ignore values supported by 1.0.2 for the automatic selection */
237 if ((cctx->flags & SSL_CONF_FLAG_FILE)
238 && (OPENSSL_strcasecmp(value, "+automatic") == 0
239 || OPENSSL_strcasecmp(value, "automatic") == 0))
240 return 1;
241 if ((cctx->flags & SSL_CONF_FLAG_CMDLINE) &&
242 strcmp(value, "auto") == 0)
243 return 1;
244
245 /* ECDHParameters accepts a single group name */
246 if (strchr(value, ':') != NULL)
247 return 0;
248
249 if (cctx->ctx)
250 rv = SSL_CTX_set1_groups_list(cctx->ctx, value);
251 else if (cctx->ssl)
252 rv = SSL_set1_groups_list(cctx->ssl, value);
253
254 return rv > 0;
255 }
256
cmd_CipherString(SSL_CONF_CTX * cctx,const char * value)257 static 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
cmd_Ciphersuites(SSL_CONF_CTX * cctx,const char * value)268 static 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
cmd_Protocol(SSL_CONF_CTX * cctx,const char * value)279 static 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 */
protocol_from_string(const char * value)302 static int protocol_from_string(const char *value)
303 {
304 struct protocol_versions {
305 const char *name;
306 int version;
307 };
308 /*
309 * Note: To avoid breaking previously valid configurations, we must retain
310 * legacy entries in this table even if the underlying protocol is no
311 * longer supported. This also means that the constants SSL3_VERSION, ...
312 * need to be retained indefinitely. This table can only grow, never
313 * shrink.
314 */
315 static const struct protocol_versions versions[] = {
316 {"None", 0},
317 {"SSLv3", SSL3_VERSION},
318 {"TLSv1", TLS1_VERSION},
319 {"TLSv1.1", TLS1_1_VERSION},
320 {"TLSv1.2", TLS1_2_VERSION},
321 {"TLSv1.3", TLS1_3_VERSION},
322 {"DTLSv1", DTLS1_VERSION},
323 {"DTLSv1.2", DTLS1_2_VERSION}
324 };
325 size_t i;
326 size_t n = OSSL_NELEM(versions);
327
328 for (i = 0; i < n; i++)
329 if (strcmp(versions[i].name, value) == 0)
330 return versions[i].version;
331 return -1;
332 }
333
min_max_proto(SSL_CONF_CTX * cctx,const char * value,int * bound)334 static int min_max_proto(SSL_CONF_CTX *cctx, const char *value, int *bound)
335 {
336 int method_version;
337 int new_version;
338
339 if (cctx->ctx != NULL)
340 method_version = cctx->ctx->method->version;
341 else if (cctx->ssl != NULL)
342 method_version = cctx->ssl->defltmeth->version;
343 else
344 return 0;
345 if ((new_version = protocol_from_string(value)) < 0)
346 return 0;
347 return ssl_set_version_bound(method_version, new_version, bound);
348 }
349
350 /*
351 * cmd_MinProtocol - Set min protocol version
352 * @cctx: config structure to save settings in
353 * @value: The min protocol version in string form
354 *
355 * Returns 1 on success and 0 on failure.
356 */
cmd_MinProtocol(SSL_CONF_CTX * cctx,const char * value)357 static int cmd_MinProtocol(SSL_CONF_CTX *cctx, const char *value)
358 {
359 return min_max_proto(cctx, value, cctx->min_version);
360 }
361
362 /*
363 * cmd_MaxProtocol - Set max protocol version
364 * @cctx: config structure to save settings in
365 * @value: The max protocol version in string form
366 *
367 * Returns 1 on success and 0 on failure.
368 */
cmd_MaxProtocol(SSL_CONF_CTX * cctx,const char * value)369 static int cmd_MaxProtocol(SSL_CONF_CTX *cctx, const char *value)
370 {
371 return min_max_proto(cctx, value, cctx->max_version);
372 }
373
cmd_Options(SSL_CONF_CTX * cctx,const char * value)374 static int cmd_Options(SSL_CONF_CTX *cctx, const char *value)
375 {
376 static const ssl_flag_tbl ssl_option_list[] = {
377 SSL_FLAG_TBL_INV("SessionTicket", SSL_OP_NO_TICKET),
378 SSL_FLAG_TBL_INV("EmptyFragments",
379 SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS),
380 SSL_FLAG_TBL("Bugs", SSL_OP_ALL),
381 SSL_FLAG_TBL_INV("Compression", SSL_OP_NO_COMPRESSION),
382 SSL_FLAG_TBL_SRV("ServerPreference", SSL_OP_CIPHER_SERVER_PREFERENCE),
383 SSL_FLAG_TBL_SRV("NoResumptionOnRenegotiation",
384 SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION),
385 SSL_FLAG_TBL_SRV("DHSingle", SSL_OP_SINGLE_DH_USE),
386 SSL_FLAG_TBL_SRV("ECDHSingle", SSL_OP_SINGLE_ECDH_USE),
387 SSL_FLAG_TBL("UnsafeLegacyRenegotiation",
388 SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION),
389 SSL_FLAG_TBL("UnsafeLegacyServerConnect",
390 SSL_OP_LEGACY_SERVER_CONNECT),
391 SSL_FLAG_TBL("ClientRenegotiation",
392 SSL_OP_ALLOW_CLIENT_RENEGOTIATION),
393 SSL_FLAG_TBL_INV("EncryptThenMac", SSL_OP_NO_ENCRYPT_THEN_MAC),
394 SSL_FLAG_TBL("NoRenegotiation", SSL_OP_NO_RENEGOTIATION),
395 SSL_FLAG_TBL("AllowNoDHEKEX", SSL_OP_ALLOW_NO_DHE_KEX),
396 SSL_FLAG_TBL("PreferNoDHEKEX", SSL_OP_PREFER_NO_DHE_KEX),
397 SSL_FLAG_TBL("PrioritizeChaCha", SSL_OP_PRIORITIZE_CHACHA),
398 SSL_FLAG_TBL("MiddleboxCompat", SSL_OP_ENABLE_MIDDLEBOX_COMPAT),
399 SSL_FLAG_TBL_INV("AntiReplay", SSL_OP_NO_ANTI_REPLAY),
400 SSL_FLAG_TBL_INV("ExtendedMasterSecret", SSL_OP_NO_EXTENDED_MASTER_SECRET),
401 SSL_FLAG_TBL_INV("CANames", SSL_OP_DISABLE_TLSEXT_CA_NAMES),
402 SSL_FLAG_TBL("KTLS", SSL_OP_ENABLE_KTLS),
403 SSL_FLAG_TBL_CERT("StrictCertCheck", SSL_CERT_FLAG_TLS_STRICT),
404 SSL_FLAG_TBL_INV("TxCertificateCompression", SSL_OP_NO_TX_CERTIFICATE_COMPRESSION),
405 SSL_FLAG_TBL_INV("RxCertificateCompression", SSL_OP_NO_RX_CERTIFICATE_COMPRESSION),
406 SSL_FLAG_TBL("KTLSTxZerocopySendfile", SSL_OP_ENABLE_KTLS_TX_ZEROCOPY_SENDFILE),
407 SSL_FLAG_TBL("IgnoreUnexpectedEOF", SSL_OP_IGNORE_UNEXPECTED_EOF),
408 };
409 if (value == NULL)
410 return -3;
411 cctx->tbl = ssl_option_list;
412 cctx->ntbl = OSSL_NELEM(ssl_option_list);
413 return CONF_parse_list(value, ',', 1, ssl_set_option_list, cctx);
414 }
415
cmd_VerifyMode(SSL_CONF_CTX * cctx,const char * value)416 static int cmd_VerifyMode(SSL_CONF_CTX *cctx, const char *value)
417 {
418 static const ssl_flag_tbl ssl_vfy_list[] = {
419 SSL_FLAG_VFY_CLI("Peer", SSL_VERIFY_PEER),
420 SSL_FLAG_VFY_SRV("Request", SSL_VERIFY_PEER),
421 SSL_FLAG_VFY_SRV("Require",
422 SSL_VERIFY_PEER | SSL_VERIFY_FAIL_IF_NO_PEER_CERT),
423 SSL_FLAG_VFY_SRV("Once", SSL_VERIFY_PEER | SSL_VERIFY_CLIENT_ONCE),
424 SSL_FLAG_VFY_SRV("RequestPostHandshake",
425 SSL_VERIFY_PEER | SSL_VERIFY_POST_HANDSHAKE),
426 SSL_FLAG_VFY_SRV("RequirePostHandshake",
427 SSL_VERIFY_PEER | SSL_VERIFY_POST_HANDSHAKE |
428 SSL_VERIFY_FAIL_IF_NO_PEER_CERT),
429 };
430 if (value == NULL)
431 return -3;
432 cctx->tbl = ssl_vfy_list;
433 cctx->ntbl = OSSL_NELEM(ssl_vfy_list);
434 return CONF_parse_list(value, ',', 1, ssl_set_option_list, cctx);
435 }
436
cmd_Certificate(SSL_CONF_CTX * cctx,const char * value)437 static int cmd_Certificate(SSL_CONF_CTX *cctx, const char *value)
438 {
439 int rv = 1;
440 CERT *c = NULL;
441 if (cctx->ctx != NULL) {
442 rv = SSL_CTX_use_certificate_chain_file(cctx->ctx, value);
443 c = cctx->ctx->cert;
444 }
445 if (cctx->ssl != NULL) {
446 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(cctx->ssl);
447
448 if (sc != NULL) {
449 rv = SSL_use_certificate_chain_file(cctx->ssl, value);
450 c = sc->cert;
451 } else {
452 rv = 0;
453 }
454 }
455 if (rv > 0 && c != NULL && cctx->flags & SSL_CONF_FLAG_REQUIRE_PRIVATE) {
456 char **pfilename = &cctx->cert_filename[c->key - c->pkeys];
457
458 OPENSSL_free(*pfilename);
459 *pfilename = OPENSSL_strdup(value);
460 if (*pfilename == NULL)
461 rv = 0;
462 }
463
464 return rv > 0;
465 }
466
cmd_PrivateKey(SSL_CONF_CTX * cctx,const char * value)467 static int cmd_PrivateKey(SSL_CONF_CTX *cctx, const char *value)
468 {
469 int rv = 1;
470 if (!(cctx->flags & SSL_CONF_FLAG_CERTIFICATE))
471 return -2;
472 if (cctx->ctx)
473 rv = SSL_CTX_use_PrivateKey_file(cctx->ctx, value, SSL_FILETYPE_PEM);
474 if (cctx->ssl)
475 rv = SSL_use_PrivateKey_file(cctx->ssl, value, SSL_FILETYPE_PEM);
476 return rv > 0;
477 }
478
cmd_ServerInfoFile(SSL_CONF_CTX * cctx,const char * value)479 static int cmd_ServerInfoFile(SSL_CONF_CTX *cctx, const char *value)
480 {
481 int rv = 1;
482 if (cctx->ctx)
483 rv = SSL_CTX_use_serverinfo_file(cctx->ctx, value);
484 return rv > 0;
485 }
486
do_store(SSL_CONF_CTX * cctx,const char * CAfile,const char * CApath,const char * CAstore,int verify_store)487 static int do_store(SSL_CONF_CTX *cctx,
488 const char *CAfile, const char *CApath, const char *CAstore,
489 int verify_store)
490 {
491 CERT *cert;
492 X509_STORE **st;
493 SSL_CTX *ctx;
494 OSSL_LIB_CTX *libctx = NULL;
495 const char *propq = NULL;
496
497 if (cctx->ctx != NULL) {
498 cert = cctx->ctx->cert;
499 ctx = cctx->ctx;
500 } else if (cctx->ssl != NULL) {
501 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(cctx->ssl);
502
503 if (sc == NULL)
504 return 0;
505
506 cert = sc->cert;
507 ctx = cctx->ssl->ctx;
508 } else {
509 return 1;
510 }
511 if (ctx != NULL) {
512 libctx = ctx->libctx;
513 propq = ctx->propq;
514 }
515 st = verify_store ? &cert->verify_store : &cert->chain_store;
516 if (*st == NULL) {
517 *st = X509_STORE_new();
518 if (*st == NULL)
519 return 0;
520 }
521
522 if (CAfile != NULL && !X509_STORE_load_file_ex(*st, CAfile, libctx, propq))
523 return 0;
524 if (CApath != NULL && !X509_STORE_load_path(*st, CApath))
525 return 0;
526 if (CAstore != NULL && !X509_STORE_load_store_ex(*st, CAstore, libctx,
527 propq))
528 return 0;
529 return 1;
530 }
531
cmd_ChainCAPath(SSL_CONF_CTX * cctx,const char * value)532 static int cmd_ChainCAPath(SSL_CONF_CTX *cctx, const char *value)
533 {
534 return do_store(cctx, NULL, value, NULL, 0);
535 }
536
cmd_ChainCAFile(SSL_CONF_CTX * cctx,const char * value)537 static int cmd_ChainCAFile(SSL_CONF_CTX *cctx, const char *value)
538 {
539 return do_store(cctx, value, NULL, NULL, 0);
540 }
541
cmd_ChainCAStore(SSL_CONF_CTX * cctx,const char * value)542 static int cmd_ChainCAStore(SSL_CONF_CTX *cctx, const char *value)
543 {
544 return do_store(cctx, NULL, NULL, value, 0);
545 }
546
cmd_VerifyCAPath(SSL_CONF_CTX * cctx,const char * value)547 static int cmd_VerifyCAPath(SSL_CONF_CTX *cctx, const char *value)
548 {
549 return do_store(cctx, NULL, value, NULL, 1);
550 }
551
cmd_VerifyCAFile(SSL_CONF_CTX * cctx,const char * value)552 static int cmd_VerifyCAFile(SSL_CONF_CTX *cctx, const char *value)
553 {
554 return do_store(cctx, value, NULL, NULL, 1);
555 }
556
cmd_VerifyCAStore(SSL_CONF_CTX * cctx,const char * value)557 static int cmd_VerifyCAStore(SSL_CONF_CTX *cctx, const char *value)
558 {
559 return do_store(cctx, NULL, NULL, value, 1);
560 }
561
cmd_RequestCAFile(SSL_CONF_CTX * cctx,const char * value)562 static int cmd_RequestCAFile(SSL_CONF_CTX *cctx, const char *value)
563 {
564 if (cctx->canames == NULL)
565 cctx->canames = sk_X509_NAME_new_null();
566 if (cctx->canames == NULL)
567 return 0;
568 return SSL_add_file_cert_subjects_to_stack(cctx->canames, value);
569 }
570
cmd_ClientCAFile(SSL_CONF_CTX * cctx,const char * value)571 static int cmd_ClientCAFile(SSL_CONF_CTX *cctx, const char *value)
572 {
573 return cmd_RequestCAFile(cctx, value);
574 }
575
cmd_RequestCAPath(SSL_CONF_CTX * cctx,const char * value)576 static int cmd_RequestCAPath(SSL_CONF_CTX *cctx, const char *value)
577 {
578 if (cctx->canames == NULL)
579 cctx->canames = sk_X509_NAME_new_null();
580 if (cctx->canames == NULL)
581 return 0;
582 return SSL_add_dir_cert_subjects_to_stack(cctx->canames, value);
583 }
584
cmd_ClientCAPath(SSL_CONF_CTX * cctx,const char * value)585 static int cmd_ClientCAPath(SSL_CONF_CTX *cctx, const char *value)
586 {
587 return cmd_RequestCAPath(cctx, value);
588 }
589
cmd_RequestCAStore(SSL_CONF_CTX * cctx,const char * value)590 static int cmd_RequestCAStore(SSL_CONF_CTX *cctx, const char *value)
591 {
592 if (cctx->canames == NULL)
593 cctx->canames = sk_X509_NAME_new_null();
594 if (cctx->canames == NULL)
595 return 0;
596 return SSL_add_store_cert_subjects_to_stack(cctx->canames, value);
597 }
598
cmd_ClientCAStore(SSL_CONF_CTX * cctx,const char * value)599 static int cmd_ClientCAStore(SSL_CONF_CTX *cctx, const char *value)
600 {
601 return cmd_RequestCAStore(cctx, value);
602 }
603
cmd_DHParameters(SSL_CONF_CTX * cctx,const char * value)604 static int cmd_DHParameters(SSL_CONF_CTX *cctx, const char *value)
605 {
606 int rv = 0;
607 EVP_PKEY *dhpkey = NULL;
608 BIO *in = NULL;
609 SSL_CTX *sslctx = (cctx->ssl != NULL) ? cctx->ssl->ctx : cctx->ctx;
610 OSSL_DECODER_CTX *decoderctx = NULL;
611
612 if (cctx->ctx != NULL || cctx->ssl != NULL) {
613 in = BIO_new(BIO_s_file());
614 if (in == NULL)
615 goto end;
616 if (BIO_read_filename(in, value) <= 0)
617 goto end;
618
619 decoderctx
620 = OSSL_DECODER_CTX_new_for_pkey(&dhpkey, "PEM", NULL, "DH",
621 OSSL_KEYMGMT_SELECT_DOMAIN_PARAMETERS,
622 sslctx->libctx, sslctx->propq);
623 if (decoderctx == NULL)
624 goto end;
625 ERR_set_mark();
626 while (!OSSL_DECODER_from_bio(decoderctx, in)
627 && dhpkey == NULL
628 && !BIO_eof(in));
629 OSSL_DECODER_CTX_free(decoderctx);
630
631 if (dhpkey == NULL) {
632 ERR_clear_last_mark();
633 goto end;
634 }
635 ERR_pop_to_mark();
636 } else {
637 return 1;
638 }
639
640 if (cctx->ctx != NULL) {
641 if ((rv = SSL_CTX_set0_tmp_dh_pkey(cctx->ctx, dhpkey)) > 0)
642 dhpkey = NULL;
643 }
644 if (cctx->ssl != NULL) {
645 if ((rv = SSL_set0_tmp_dh_pkey(cctx->ssl, dhpkey)) > 0)
646 dhpkey = NULL;
647 }
648 end:
649 EVP_PKEY_free(dhpkey);
650 BIO_free(in);
651 return rv > 0;
652 }
653
654 /*
655 * |value| input is "<number[,number]>"
656 * where the first number is the padding block size for
657 * application data, and the optional second is the
658 * padding block size for handshake messages
659 */
cmd_RecordPadding(SSL_CONF_CTX * cctx,const char * value)660 static int cmd_RecordPadding(SSL_CONF_CTX *cctx, const char *value)
661 {
662 int rv = 0;
663 unsigned long block_padding = 0, hs_padding = 0;
664 char *commap = NULL, *copy = NULL;
665 char *endptr = NULL;
666
667 copy = OPENSSL_strdup(value);
668 if (copy == NULL)
669 return 0;
670 commap = strstr(copy, ",");
671 if (commap != NULL) {
672 *commap = '\0';
673 if (*(commap + 1) == '\0') {
674 OPENSSL_free(copy);
675 return 0;
676 }
677 if (!OPENSSL_strtoul(commap + 1, &endptr, 0, &hs_padding))
678 return 0;
679 }
680 if (!OPENSSL_strtoul(copy, &endptr, 0, &block_padding))
681 return 0;
682 if (commap == NULL)
683 hs_padding = block_padding;
684 OPENSSL_free(copy);
685
686 /*
687 * All we care about are non-negative values,
688 * the setters check the range
689 */
690 if (cctx->ctx)
691 rv = SSL_CTX_set_block_padding_ex(cctx->ctx, (size_t)block_padding,
692 (size_t)hs_padding);
693 if (cctx->ssl)
694 rv = SSL_set_block_padding_ex(cctx->ssl, (size_t)block_padding,
695 (size_t)hs_padding);
696 return rv;
697 }
698
699
cmd_NumTickets(SSL_CONF_CTX * cctx,const char * value)700 static int cmd_NumTickets(SSL_CONF_CTX *cctx, const char *value)
701 {
702 int rv = 0;
703 int num_tickets = atoi(value);
704
705 if (num_tickets >= 0) {
706 if (cctx->ctx)
707 rv = SSL_CTX_set_num_tickets(cctx->ctx, num_tickets);
708 if (cctx->ssl)
709 rv = SSL_set_num_tickets(cctx->ssl, num_tickets);
710 }
711 return rv;
712 }
713
714 typedef struct {
715 int (*cmd) (SSL_CONF_CTX *cctx, const char *value);
716 const char *str_file;
717 const char *str_cmdline;
718 unsigned short flags;
719 unsigned short value_type;
720 } ssl_conf_cmd_tbl;
721
722 /* Table of supported parameters */
723
724 #define SSL_CONF_CMD(name, cmdopt, flags, type) \
725 {cmd_##name, #name, cmdopt, flags, type}
726
727 #define SSL_CONF_CMD_STRING(name, cmdopt, flags) \
728 SSL_CONF_CMD(name, cmdopt, flags, SSL_CONF_TYPE_STRING)
729
730 #define SSL_CONF_CMD_SWITCH(name, flags) \
731 {0, NULL, name, flags, SSL_CONF_TYPE_NONE}
732
733 /* See apps/include/opt.h if you change this table. */
734 /* The SSL_CONF_CMD_SWITCH should be the same order as ssl_cmd_switches */
735 static const ssl_conf_cmd_tbl ssl_conf_cmds[] = {
736 SSL_CONF_CMD_SWITCH("no_ssl3", 0),
737 SSL_CONF_CMD_SWITCH("no_tls1", 0),
738 SSL_CONF_CMD_SWITCH("no_tls1_1", 0),
739 SSL_CONF_CMD_SWITCH("no_tls1_2", 0),
740 SSL_CONF_CMD_SWITCH("no_tls1_3", 0),
741 SSL_CONF_CMD_SWITCH("bugs", 0),
742 SSL_CONF_CMD_SWITCH("no_comp", 0),
743 SSL_CONF_CMD_SWITCH("comp", 0),
744 SSL_CONF_CMD_SWITCH("no_tx_cert_comp", 0),
745 SSL_CONF_CMD_SWITCH("tx_cert_comp", 0),
746 SSL_CONF_CMD_SWITCH("no_rx_cert_comp", 0),
747 SSL_CONF_CMD_SWITCH("rx_cert_comp", 0),
748 SSL_CONF_CMD_SWITCH("ecdh_single", SSL_CONF_FLAG_SERVER),
749 SSL_CONF_CMD_SWITCH("no_ticket", 0),
750 SSL_CONF_CMD_SWITCH("serverpref", SSL_CONF_FLAG_SERVER),
751 SSL_CONF_CMD_SWITCH("legacy_renegotiation", 0),
752 SSL_CONF_CMD_SWITCH("client_renegotiation", SSL_CONF_FLAG_SERVER),
753 SSL_CONF_CMD_SWITCH("legacy_server_connect", SSL_CONF_FLAG_CLIENT),
754 SSL_CONF_CMD_SWITCH("no_renegotiation", 0),
755 SSL_CONF_CMD_SWITCH("no_resumption_on_reneg", SSL_CONF_FLAG_SERVER),
756 SSL_CONF_CMD_SWITCH("no_legacy_server_connect", SSL_CONF_FLAG_CLIENT),
757 SSL_CONF_CMD_SWITCH("allow_no_dhe_kex", 0),
758 SSL_CONF_CMD_SWITCH("prefer_no_dhe_kex", 0),
759 SSL_CONF_CMD_SWITCH("prioritize_chacha", SSL_CONF_FLAG_SERVER),
760 SSL_CONF_CMD_SWITCH("strict", 0),
761 SSL_CONF_CMD_SWITCH("no_middlebox", 0),
762 SSL_CONF_CMD_SWITCH("anti_replay", SSL_CONF_FLAG_SERVER),
763 SSL_CONF_CMD_SWITCH("no_anti_replay", SSL_CONF_FLAG_SERVER),
764 SSL_CONF_CMD_SWITCH("no_etm", 0),
765 SSL_CONF_CMD_SWITCH("no_ems", 0),
766 SSL_CONF_CMD_STRING(SignatureAlgorithms, "sigalgs", 0),
767 SSL_CONF_CMD_STRING(ClientSignatureAlgorithms, "client_sigalgs", 0),
768 SSL_CONF_CMD_STRING(Curves, "curves", 0),
769 SSL_CONF_CMD_STRING(Groups, "groups", 0),
770 SSL_CONF_CMD_STRING(ECDHParameters, "named_curve", SSL_CONF_FLAG_SERVER),
771 SSL_CONF_CMD_STRING(CipherString, "cipher", 0),
772 SSL_CONF_CMD_STRING(Ciphersuites, "ciphersuites", 0),
773 SSL_CONF_CMD_STRING(Protocol, NULL, 0),
774 SSL_CONF_CMD_STRING(MinProtocol, "min_protocol", 0),
775 SSL_CONF_CMD_STRING(MaxProtocol, "max_protocol", 0),
776 SSL_CONF_CMD_STRING(Options, NULL, 0),
777 SSL_CONF_CMD_STRING(VerifyMode, NULL, 0),
778 SSL_CONF_CMD(Certificate, "cert", SSL_CONF_FLAG_CERTIFICATE,
779 SSL_CONF_TYPE_FILE),
780 SSL_CONF_CMD(PrivateKey, "key", SSL_CONF_FLAG_CERTIFICATE,
781 SSL_CONF_TYPE_FILE),
782 SSL_CONF_CMD(ServerInfoFile, NULL,
783 SSL_CONF_FLAG_SERVER | SSL_CONF_FLAG_CERTIFICATE,
784 SSL_CONF_TYPE_FILE),
785 SSL_CONF_CMD(ChainCAPath, "chainCApath", SSL_CONF_FLAG_CERTIFICATE,
786 SSL_CONF_TYPE_DIR),
787 SSL_CONF_CMD(ChainCAFile, "chainCAfile", SSL_CONF_FLAG_CERTIFICATE,
788 SSL_CONF_TYPE_FILE),
789 SSL_CONF_CMD(ChainCAStore, "chainCAstore", SSL_CONF_FLAG_CERTIFICATE,
790 SSL_CONF_TYPE_STORE),
791 SSL_CONF_CMD(VerifyCAPath, "verifyCApath", SSL_CONF_FLAG_CERTIFICATE,
792 SSL_CONF_TYPE_DIR),
793 SSL_CONF_CMD(VerifyCAFile, "verifyCAfile", SSL_CONF_FLAG_CERTIFICATE,
794 SSL_CONF_TYPE_FILE),
795 SSL_CONF_CMD(VerifyCAStore, "verifyCAstore", SSL_CONF_FLAG_CERTIFICATE,
796 SSL_CONF_TYPE_STORE),
797 SSL_CONF_CMD(RequestCAFile, "requestCAFile", SSL_CONF_FLAG_CERTIFICATE,
798 SSL_CONF_TYPE_FILE),
799 SSL_CONF_CMD(ClientCAFile, NULL,
800 SSL_CONF_FLAG_SERVER | SSL_CONF_FLAG_CERTIFICATE,
801 SSL_CONF_TYPE_FILE),
802 SSL_CONF_CMD(RequestCAPath, NULL, SSL_CONF_FLAG_CERTIFICATE,
803 SSL_CONF_TYPE_DIR),
804 SSL_CONF_CMD(ClientCAPath, NULL,
805 SSL_CONF_FLAG_SERVER | SSL_CONF_FLAG_CERTIFICATE,
806 SSL_CONF_TYPE_DIR),
807 SSL_CONF_CMD(RequestCAStore, "requestCAStore", SSL_CONF_FLAG_CERTIFICATE,
808 SSL_CONF_TYPE_STORE),
809 SSL_CONF_CMD(ClientCAStore, NULL,
810 SSL_CONF_FLAG_SERVER | SSL_CONF_FLAG_CERTIFICATE,
811 SSL_CONF_TYPE_STORE),
812 SSL_CONF_CMD(DHParameters, "dhparam",
813 SSL_CONF_FLAG_SERVER | SSL_CONF_FLAG_CERTIFICATE,
814 SSL_CONF_TYPE_FILE),
815 SSL_CONF_CMD_STRING(RecordPadding, "record_padding", 0),
816 SSL_CONF_CMD_STRING(NumTickets, "num_tickets", SSL_CONF_FLAG_SERVER),
817 };
818
819 /* Supported switches: must match order of switches in ssl_conf_cmds */
820 static const ssl_switch_tbl ssl_cmd_switches[] = {
821 {SSL_OP_NO_SSLv3, 0}, /* no_ssl3 */
822 {SSL_OP_NO_TLSv1, 0}, /* no_tls1 */
823 {SSL_OP_NO_TLSv1_1, 0}, /* no_tls1_1 */
824 {SSL_OP_NO_TLSv1_2, 0}, /* no_tls1_2 */
825 {SSL_OP_NO_TLSv1_3, 0}, /* no_tls1_3 */
826 {SSL_OP_ALL, 0}, /* bugs */
827 {SSL_OP_NO_COMPRESSION, 0}, /* no_comp */
828 {SSL_OP_NO_COMPRESSION, SSL_TFLAG_INV}, /* comp */
829 {SSL_OP_NO_TX_CERTIFICATE_COMPRESSION, 0}, /* no_tx_cert_comp */
830 {SSL_OP_NO_TX_CERTIFICATE_COMPRESSION, SSL_TFLAG_INV}, /* tx_cert_comp */
831 {SSL_OP_NO_RX_CERTIFICATE_COMPRESSION, 0}, /* no_rx_cert_comp */
832 {SSL_OP_NO_RX_CERTIFICATE_COMPRESSION, SSL_TFLAG_INV}, /* rx_cert_comp */
833 {SSL_OP_SINGLE_ECDH_USE, 0}, /* ecdh_single */
834 {SSL_OP_NO_TICKET, 0}, /* no_ticket */
835 {SSL_OP_CIPHER_SERVER_PREFERENCE, 0}, /* serverpref */
836 /* legacy_renegotiation */
837 {SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION, 0},
838 /* Allow client renegotiation */
839 {SSL_OP_ALLOW_CLIENT_RENEGOTIATION, 0},
840 /* legacy_server_connect */
841 {SSL_OP_LEGACY_SERVER_CONNECT, 0},
842 /* no_renegotiation */
843 {SSL_OP_NO_RENEGOTIATION, 0},
844 /* no_resumption_on_reneg */
845 {SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION, 0},
846 /* no_legacy_server_connect */
847 {SSL_OP_LEGACY_SERVER_CONNECT, SSL_TFLAG_INV},
848 /* allow_no_dhe_kex */
849 {SSL_OP_ALLOW_NO_DHE_KEX, 0},
850 /* prefer_no_dhe_kex */
851 {SSL_OP_PREFER_NO_DHE_KEX, 0},
852 /* chacha reprioritization */
853 {SSL_OP_PRIORITIZE_CHACHA, 0},
854 {SSL_CERT_FLAG_TLS_STRICT, SSL_TFLAG_CERT}, /* strict */
855 /* no_middlebox */
856 {SSL_OP_ENABLE_MIDDLEBOX_COMPAT, SSL_TFLAG_INV},
857 /* anti_replay */
858 {SSL_OP_NO_ANTI_REPLAY, SSL_TFLAG_INV},
859 /* no_anti_replay */
860 {SSL_OP_NO_ANTI_REPLAY, 0},
861 /* no Encrypt-then-Mac */
862 {SSL_OP_NO_ENCRYPT_THEN_MAC, 0},
863 /* no Extended master secret */
864 {SSL_OP_NO_EXTENDED_MASTER_SECRET, 0},
865 };
866
ssl_conf_cmd_skip_prefix(SSL_CONF_CTX * cctx,const char ** pcmd)867 static int ssl_conf_cmd_skip_prefix(SSL_CONF_CTX *cctx, const char **pcmd)
868 {
869 if (pcmd == NULL || *pcmd == NULL)
870 return 0;
871 /* If a prefix is set, check and skip */
872 if (cctx->prefix) {
873 if (strlen(*pcmd) <= cctx->prefixlen)
874 return 0;
875 if (cctx->flags & SSL_CONF_FLAG_CMDLINE &&
876 strncmp(*pcmd, cctx->prefix, cctx->prefixlen))
877 return 0;
878 if (cctx->flags & SSL_CONF_FLAG_FILE &&
879 OPENSSL_strncasecmp(*pcmd, cctx->prefix, cctx->prefixlen))
880 return 0;
881 *pcmd += cctx->prefixlen;
882 } else if (cctx->flags & SSL_CONF_FLAG_CMDLINE) {
883 if (**pcmd != '-' || !(*pcmd)[1])
884 return 0;
885 *pcmd += 1;
886 }
887 return 1;
888 }
889
890 /* Determine if a command is allowed according to cctx flags */
ssl_conf_cmd_allowed(SSL_CONF_CTX * cctx,const ssl_conf_cmd_tbl * t)891 static int ssl_conf_cmd_allowed(SSL_CONF_CTX *cctx, const ssl_conf_cmd_tbl *t)
892 {
893 unsigned int tfl = t->flags;
894 unsigned int cfl = cctx->flags;
895 if ((tfl & SSL_CONF_FLAG_SERVER) && !(cfl & SSL_CONF_FLAG_SERVER))
896 return 0;
897 if ((tfl & SSL_CONF_FLAG_CLIENT) && !(cfl & SSL_CONF_FLAG_CLIENT))
898 return 0;
899 if ((tfl & SSL_CONF_FLAG_CERTIFICATE)
900 && !(cfl & SSL_CONF_FLAG_CERTIFICATE))
901 return 0;
902 return 1;
903 }
904
ssl_conf_cmd_lookup(SSL_CONF_CTX * cctx,const char * cmd)905 static const ssl_conf_cmd_tbl *ssl_conf_cmd_lookup(SSL_CONF_CTX *cctx,
906 const char *cmd)
907 {
908 const ssl_conf_cmd_tbl *t;
909 size_t i;
910 if (cmd == NULL)
911 return NULL;
912
913 /* Look for matching parameter name in table */
914 for (i = 0, t = ssl_conf_cmds; i < OSSL_NELEM(ssl_conf_cmds); i++, t++) {
915 if (ssl_conf_cmd_allowed(cctx, t)) {
916 if (cctx->flags & SSL_CONF_FLAG_CMDLINE) {
917 if (t->str_cmdline && strcmp(t->str_cmdline, cmd) == 0)
918 return t;
919 }
920 if (cctx->flags & SSL_CONF_FLAG_FILE) {
921 if (t->str_file && OPENSSL_strcasecmp(t->str_file, cmd) == 0)
922 return t;
923 }
924 }
925 }
926 return NULL;
927 }
928
ctrl_switch_option(SSL_CONF_CTX * cctx,const ssl_conf_cmd_tbl * cmd)929 static int ctrl_switch_option(SSL_CONF_CTX *cctx, const ssl_conf_cmd_tbl *cmd)
930 {
931 /* Find index of command in table */
932 size_t idx = cmd - ssl_conf_cmds;
933 const ssl_switch_tbl *scmd;
934
935 /* Sanity check index */
936 if (idx >= OSSL_NELEM(ssl_cmd_switches)) {
937 ERR_raise(ERR_LIB_SSL, ERR_R_INTERNAL_ERROR);
938 return 0;
939 }
940 /* Obtain switches entry with same index */
941 scmd = ssl_cmd_switches + idx;
942 ssl_set_option(cctx, scmd->name_flags, scmd->option_value, 1);
943 return 1;
944 }
945
SSL_CONF_cmd(SSL_CONF_CTX * cctx,const char * cmd,const char * value)946 int SSL_CONF_cmd(SSL_CONF_CTX *cctx, const char *cmd, const char *value)
947 {
948 const ssl_conf_cmd_tbl *runcmd;
949 if (cmd == NULL) {
950 ERR_raise(ERR_LIB_SSL, SSL_R_INVALID_NULL_CMD_NAME);
951 return 0;
952 }
953
954 if (!ssl_conf_cmd_skip_prefix(cctx, &cmd))
955 goto unknown_cmd;
956
957 runcmd = ssl_conf_cmd_lookup(cctx, cmd);
958
959 if (runcmd) {
960 int rv = -3;
961
962 if (runcmd->value_type == SSL_CONF_TYPE_NONE) {
963 return ctrl_switch_option(cctx, runcmd);
964 }
965 if (value == NULL)
966 goto bad_value;
967 rv = runcmd->cmd(cctx, value);
968 if (rv > 0)
969 return 2;
970 if (rv != -2)
971 rv = 0;
972
973 bad_value:
974 if (cctx->flags & SSL_CONF_FLAG_SHOW_ERRORS)
975 ERR_raise_data(ERR_LIB_SSL, SSL_R_BAD_VALUE,
976 "cmd=%s, value=%s", cmd,
977 value != NULL ? value : "<EMPTY>");
978 return rv;
979 }
980
981 unknown_cmd:
982 if (cctx->flags & SSL_CONF_FLAG_SHOW_ERRORS)
983 ERR_raise_data(ERR_LIB_SSL, SSL_R_UNKNOWN_CMD_NAME, "cmd=%s", cmd);
984
985 return -2;
986 }
987
SSL_CONF_cmd_argv(SSL_CONF_CTX * cctx,int * pargc,char *** pargv)988 int SSL_CONF_cmd_argv(SSL_CONF_CTX *cctx, int *pargc, char ***pargv)
989 {
990 int rv;
991 const char *arg = NULL, *argn;
992
993 if (pargc != NULL && *pargc == 0)
994 return 0;
995 if (pargc == NULL || *pargc > 0)
996 arg = **pargv;
997 if (arg == NULL)
998 return 0;
999 if (pargc == NULL || *pargc > 1)
1000 argn = (*pargv)[1];
1001 else
1002 argn = NULL;
1003 cctx->flags &= ~SSL_CONF_FLAG_FILE;
1004 cctx->flags |= SSL_CONF_FLAG_CMDLINE;
1005 rv = SSL_CONF_cmd(cctx, arg, argn);
1006 if (rv > 0) {
1007 /* Success: update pargc, pargv */
1008 (*pargv) += rv;
1009 if (pargc)
1010 (*pargc) -= rv;
1011 return rv;
1012 }
1013 /* Unknown switch: indicate no arguments processed */
1014 if (rv == -2)
1015 return 0;
1016 /* Some error occurred processing command, return fatal error */
1017 if (rv == 0)
1018 return -1;
1019 return rv;
1020 }
1021
SSL_CONF_cmd_value_type(SSL_CONF_CTX * cctx,const char * cmd)1022 int SSL_CONF_cmd_value_type(SSL_CONF_CTX *cctx, const char *cmd)
1023 {
1024 if (ssl_conf_cmd_skip_prefix(cctx, &cmd)) {
1025 const ssl_conf_cmd_tbl *runcmd;
1026 runcmd = ssl_conf_cmd_lookup(cctx, cmd);
1027 if (runcmd)
1028 return runcmd->value_type;
1029 }
1030 return SSL_CONF_TYPE_UNKNOWN;
1031 }
1032
SSL_CONF_CTX_new(void)1033 SSL_CONF_CTX *SSL_CONF_CTX_new(void)
1034 {
1035 SSL_CONF_CTX *ret = OPENSSL_zalloc(sizeof(*ret));
1036
1037 return ret;
1038 }
1039
SSL_CONF_CTX_finish(SSL_CONF_CTX * cctx)1040 int SSL_CONF_CTX_finish(SSL_CONF_CTX *cctx)
1041 {
1042 /* See if any certificates are missing private keys */
1043 size_t i;
1044 CERT *c = NULL;
1045
1046 if (cctx->ctx != NULL) {
1047 c = cctx->ctx->cert;
1048 } else if (cctx->ssl != NULL) {
1049 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(cctx->ssl);
1050
1051 if (sc != NULL)
1052 c = sc->cert;
1053 }
1054 if (c != NULL && cctx->flags & SSL_CONF_FLAG_REQUIRE_PRIVATE) {
1055 for (i = 0; i < SSL_PKEY_NUM; i++) {
1056 const char *p = cctx->cert_filename[i];
1057 /*
1058 * If missing private key try to load one from certificate file
1059 */
1060 if (p && !c->pkeys[i].privatekey) {
1061 if (!cmd_PrivateKey(cctx, p))
1062 return 0;
1063 }
1064 }
1065 }
1066 if (cctx->canames) {
1067 if (cctx->ssl)
1068 SSL_set0_CA_list(cctx->ssl, cctx->canames);
1069 else if (cctx->ctx)
1070 SSL_CTX_set0_CA_list(cctx->ctx, cctx->canames);
1071 else
1072 sk_X509_NAME_pop_free(cctx->canames, X509_NAME_free);
1073 cctx->canames = NULL;
1074 }
1075 return 1;
1076 }
1077
SSL_CONF_CTX_free(SSL_CONF_CTX * cctx)1078 void SSL_CONF_CTX_free(SSL_CONF_CTX *cctx)
1079 {
1080 if (cctx) {
1081 size_t i;
1082 for (i = 0; i < SSL_PKEY_NUM; i++)
1083 OPENSSL_free(cctx->cert_filename[i]);
1084 OPENSSL_free(cctx->prefix);
1085 sk_X509_NAME_pop_free(cctx->canames, X509_NAME_free);
1086 OPENSSL_free(cctx);
1087 }
1088 }
1089
SSL_CONF_CTX_set_flags(SSL_CONF_CTX * cctx,unsigned int flags)1090 unsigned int SSL_CONF_CTX_set_flags(SSL_CONF_CTX *cctx, unsigned int flags)
1091 {
1092 cctx->flags |= flags;
1093 return cctx->flags;
1094 }
1095
SSL_CONF_CTX_clear_flags(SSL_CONF_CTX * cctx,unsigned int flags)1096 unsigned int SSL_CONF_CTX_clear_flags(SSL_CONF_CTX *cctx, unsigned int flags)
1097 {
1098 cctx->flags &= ~flags;
1099 return cctx->flags;
1100 }
1101
SSL_CONF_CTX_set1_prefix(SSL_CONF_CTX * cctx,const char * pre)1102 int SSL_CONF_CTX_set1_prefix(SSL_CONF_CTX *cctx, const char *pre)
1103 {
1104 char *tmp = NULL;
1105 if (pre) {
1106 tmp = OPENSSL_strdup(pre);
1107 if (tmp == NULL)
1108 return 0;
1109 }
1110 OPENSSL_free(cctx->prefix);
1111 cctx->prefix = tmp;
1112 if (tmp)
1113 cctx->prefixlen = strlen(tmp);
1114 else
1115 cctx->prefixlen = 0;
1116 return 1;
1117 }
1118
SSL_CONF_CTX_set_ssl(SSL_CONF_CTX * cctx,SSL * ssl)1119 void SSL_CONF_CTX_set_ssl(SSL_CONF_CTX *cctx, SSL *ssl)
1120 {
1121 cctx->ssl = ssl;
1122 cctx->ctx = NULL;
1123 if (ssl != NULL) {
1124 SSL_CONNECTION *sc = SSL_CONNECTION_FROM_SSL(ssl);
1125
1126 if (sc == NULL)
1127 return;
1128 cctx->poptions = &sc->options;
1129 cctx->min_version = &sc->min_proto_version;
1130 cctx->max_version = &sc->max_proto_version;
1131 cctx->pcert_flags = &sc->cert->cert_flags;
1132 cctx->pvfy_flags = &sc->verify_mode;
1133 } else {
1134 cctx->poptions = NULL;
1135 cctx->min_version = NULL;
1136 cctx->max_version = NULL;
1137 cctx->pcert_flags = NULL;
1138 cctx->pvfy_flags = NULL;
1139 }
1140 }
1141
SSL_CONF_CTX_set_ssl_ctx(SSL_CONF_CTX * cctx,SSL_CTX * ctx)1142 void SSL_CONF_CTX_set_ssl_ctx(SSL_CONF_CTX *cctx, SSL_CTX *ctx)
1143 {
1144 cctx->ctx = ctx;
1145 cctx->ssl = NULL;
1146 if (ctx) {
1147 cctx->poptions = &ctx->options;
1148 cctx->min_version = &ctx->min_proto_version;
1149 cctx->max_version = &ctx->max_proto_version;
1150 cctx->pcert_flags = &ctx->cert->cert_flags;
1151 cctx->pvfy_flags = &ctx->verify_mode;
1152 } else {
1153 cctx->poptions = NULL;
1154 cctx->min_version = NULL;
1155 cctx->max_version = NULL;
1156 cctx->pcert_flags = NULL;
1157 cctx->pvfy_flags = NULL;
1158 }
1159 }
1160
