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Commit | Line | Data |
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0f113f3e MC |
1 | /* |
2 | * ! \file ssl/ssl_conf.c \brief SSL configuration functions | |
3db935a9 DSH |
3 | */ |
4 | /* ==================================================================== | |
5 | * Copyright (c) 2012 The OpenSSL Project. All rights reserved. | |
6 | * | |
7 | * Redistribution and use in source and binary forms, with or without | |
8 | * modification, are permitted provided that the following conditions | |
9 | * are met: | |
10 | * | |
11 | * 1. Redistributions of source code must retain the above copyright | |
0f113f3e | 12 | * notice, this list of conditions and the following disclaimer. |
3db935a9 DSH |
13 | * |
14 | * 2. Redistributions in binary form must reproduce the above copyright | |
15 | * notice, this list of conditions and the following disclaimer in | |
16 | * the documentation and/or other materials provided with the | |
17 | * distribution. | |
18 | * | |
19 | * 3. All advertising materials mentioning features or use of this | |
20 | * software must display the following acknowledgment: | |
21 | * "This product includes software developed by the OpenSSL Project | |
22 | * for use in the OpenSSL Toolkit. (http://www.openssl.org/)" | |
23 | * | |
24 | * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to | |
25 | * endorse or promote products derived from this software without | |
26 | * prior written permission. For written permission, please contact | |
27 | * openssl-core@openssl.org. | |
28 | * | |
29 | * 5. Products derived from this software may not be called "OpenSSL" | |
30 | * nor may "OpenSSL" appear in their names without prior written | |
31 | * permission of the OpenSSL Project. | |
32 | * | |
33 | * 6. Redistributions of any form whatsoever must retain the following | |
34 | * acknowledgment: | |
35 | * "This product includes software developed by the OpenSSL Project | |
36 | * for use in the OpenSSL Toolkit (http://www.openssl.org/)" | |
37 | * | |
38 | * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY | |
39 | * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
40 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
41 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR | |
42 | * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
43 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT | |
44 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; | |
45 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
46 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
47 | * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
48 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED | |
49 | * OF THE POSSIBILITY OF SUCH DAMAGE. | |
50 | * ==================================================================== | |
51 | * | |
52 | * This product includes cryptographic software written by Eric Young | |
53 | * (eay@cryptsoft.com). This product includes software written by Tim | |
54 | * Hudson (tjh@cryptsoft.com). | |
55 | * | |
56 | */ | |
57 | ||
58 | #ifdef REF_CHECK | |
0f113f3e | 59 | # include <assert.h> |
3db935a9 DSH |
60 | #endif |
61 | #include <stdio.h> | |
62 | #include "ssl_locl.h" | |
63 | #include <openssl/conf.h> | |
64 | #include <openssl/objects.h> | |
96e16bdd | 65 | #ifndef OPENSSL_NO_DH |
0f113f3e | 66 | # include <openssl/dh.h> |
96e16bdd | 67 | #endif |
3db935a9 | 68 | |
0f113f3e MC |
69 | /* |
70 | * structure holding name tables. This is used for pemitted elements in lists | |
71 | * such as TLSv1 and single command line switches such as no_tls1 | |
3db935a9 DSH |
72 | */ |
73 | ||
0f113f3e MC |
74 | typedef struct { |
75 | const char *name; | |
76 | int namelen; | |
77 | unsigned int name_flags; | |
78 | unsigned long option_value; | |
79 | } ssl_flag_tbl; | |
3db935a9 DSH |
80 | |
81 | /* Sense of name is inverted e.g. "TLSv1" will clear SSL_OP_NO_TLSv1 */ | |
0f113f3e | 82 | #define SSL_TFLAG_INV 0x1 |
3db935a9 | 83 | /* Flags refers to cert_flags not options */ |
0f113f3e | 84 | #define SSL_TFLAG_CERT 0x2 |
3db935a9 DSH |
85 | /* Option can only be used for clients */ |
86 | #define SSL_TFLAG_CLIENT SSL_CONF_FLAG_CLIENT | |
87 | /* Option can only be used for servers */ | |
88 | #define SSL_TFLAG_SERVER SSL_CONF_FLAG_SERVER | |
89 | #define SSL_TFLAG_BOTH (SSL_TFLAG_CLIENT|SSL_TFLAG_SERVER) | |
90 | ||
91 | #define SSL_FLAG_TBL(str, flag) \ | |
0f113f3e | 92 | {str, (int)(sizeof(str) - 1), SSL_TFLAG_BOTH, flag} |
3db935a9 | 93 | #define SSL_FLAG_TBL_SRV(str, flag) \ |
0f113f3e | 94 | {str, (int)(sizeof(str) - 1), SSL_TFLAG_SERVER, flag} |
3db935a9 | 95 | #define SSL_FLAG_TBL_CLI(str, flag) \ |
0f113f3e | 96 | {str, (int)(sizeof(str) - 1), SSL_TFLAG_CLIENT, flag} |
3db935a9 | 97 | #define SSL_FLAG_TBL_INV(str, flag) \ |
0f113f3e | 98 | {str, (int)(sizeof(str) - 1), SSL_TFLAG_INV|SSL_TFLAG_BOTH, flag} |
3db935a9 | 99 | #define SSL_FLAG_TBL_SRV_INV(str, flag) \ |
0f113f3e | 100 | {str, (int)(sizeof(str) - 1), SSL_TFLAG_INV|SSL_TFLAG_SERVER, flag} |
3db935a9 | 101 | #define SSL_FLAG_TBL_CERT(str, flag) \ |
0f113f3e | 102 | {str, (int)(sizeof(str) - 1), SSL_TFLAG_CERT|SSL_TFLAG_BOTH, flag} |
3db935a9 | 103 | |
0f113f3e MC |
104 | /* |
105 | * Opaque structure containing SSL configuration context. | |
3db935a9 DSH |
106 | */ |
107 | ||
0f113f3e MC |
108 | struct ssl_conf_ctx_st { |
109 | /* | |
110 | * Various flags indicating (among other things) which options we will | |
111 | * recognise. | |
112 | */ | |
113 | unsigned int flags; | |
114 | /* Prefix and length of commands */ | |
115 | char *prefix; | |
116 | size_t prefixlen; | |
117 | /* SSL_CTX or SSL structure to perform operations on */ | |
118 | SSL_CTX *ctx; | |
119 | SSL *ssl; | |
120 | /* Pointer to SSL or SSL_CTX options field or NULL if none */ | |
121 | unsigned long *poptions; | |
122 | /* Pointer to SSL or SSL_CTX cert_flags or NULL if none */ | |
123 | unsigned int *pcert_flags; | |
124 | /* Current flag table being worked on */ | |
125 | const ssl_flag_tbl *tbl; | |
126 | /* Size of table */ | |
127 | size_t ntbl; | |
128 | }; | |
3db935a9 DSH |
129 | |
130 | static int ssl_match_option(SSL_CONF_CTX *cctx, const ssl_flag_tbl *tbl, | |
0f113f3e MC |
131 | const char *name, int namelen, int onoff) |
132 | { | |
133 | /* If name not relevant for context skip */ | |
134 | if (!(cctx->flags & tbl->name_flags & SSL_TFLAG_BOTH)) | |
135 | return 0; | |
136 | if (namelen == -1) { | |
137 | if (strcmp(tbl->name, name)) | |
138 | return 0; | |
139 | } else if (tbl->namelen != namelen | |
140 | || strncasecmp(tbl->name, name, namelen)) | |
141 | return 0; | |
142 | if (cctx->poptions) { | |
143 | if (tbl->name_flags & SSL_TFLAG_INV) | |
144 | onoff ^= 1; | |
145 | if (tbl->name_flags & SSL_TFLAG_CERT) { | |
146 | if (onoff) | |
147 | *cctx->pcert_flags |= tbl->option_value; | |
148 | else | |
149 | *cctx->pcert_flags &= ~tbl->option_value; | |
150 | } else { | |
151 | if (onoff) | |
152 | *cctx->poptions |= tbl->option_value; | |
153 | else | |
154 | *cctx->poptions &= ~tbl->option_value; | |
155 | } | |
156 | } | |
157 | return 1; | |
158 | } | |
3db935a9 DSH |
159 | |
160 | static int ssl_set_option_list(const char *elem, int len, void *usr) | |
0f113f3e MC |
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 | */ | |
2747d73c KR |
170 | if (elem == NULL) |
171 | return 0; | |
0f113f3e MC |
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 | } | |
3db935a9 DSH |
189 | |
190 | /* Single command line switches with no argument e.g. -no_ssl3 */ | |
191 | static int ctrl_str_option(SSL_CONF_CTX *cctx, const char *cmd) | |
0f113f3e MC |
192 | { |
193 | static const ssl_flag_tbl ssl_option_single[] = { | |
194 | SSL_FLAG_TBL("no_ssl3", SSL_OP_NO_SSLv3), | |
195 | SSL_FLAG_TBL("no_tls1", SSL_OP_NO_TLSv1), | |
196 | SSL_FLAG_TBL("no_tls1_1", SSL_OP_NO_TLSv1_1), | |
197 | SSL_FLAG_TBL("no_tls1_2", SSL_OP_NO_TLSv1_2), | |
198 | SSL_FLAG_TBL("bugs", SSL_OP_ALL), | |
199 | SSL_FLAG_TBL("no_comp", SSL_OP_NO_COMPRESSION), | |
200 | SSL_FLAG_TBL_SRV("ecdh_single", SSL_OP_SINGLE_ECDH_USE), | |
3db935a9 | 201 | #ifndef OPENSSL_NO_TLSEXT |
0f113f3e | 202 | SSL_FLAG_TBL("no_ticket", SSL_OP_NO_TICKET), |
3db935a9 | 203 | #endif |
0f113f3e MC |
204 | SSL_FLAG_TBL_SRV("serverpref", SSL_OP_CIPHER_SERVER_PREFERENCE), |
205 | SSL_FLAG_TBL("legacy_renegotiation", | |
206 | SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION), | |
207 | SSL_FLAG_TBL_SRV("legacy_server_connect", | |
208 | SSL_OP_LEGACY_SERVER_CONNECT), | |
209 | SSL_FLAG_TBL_SRV("no_resumption_on_reneg", | |
210 | SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION), | |
211 | SSL_FLAG_TBL_SRV_INV("no_legacy_server_connect", | |
212 | SSL_OP_LEGACY_SERVER_CONNECT), | |
213 | SSL_FLAG_TBL_CERT("strict", SSL_CERT_FLAG_TLS_STRICT), | |
3db935a9 | 214 | #ifdef OPENSSL_SSL_DEBUG_BROKEN_PROTOCOL |
0f113f3e MC |
215 | SSL_FLAG_TBL_CERT("debug_broken_protocol", |
216 | SSL_CERT_FLAG_BROKEN_PROTOCOL), | |
3db935a9 | 217 | #endif |
0f113f3e MC |
218 | }; |
219 | cctx->tbl = ssl_option_single; | |
220 | cctx->ntbl = sizeof(ssl_option_single) / sizeof(ssl_flag_tbl); | |
221 | return ssl_set_option_list(cmd, -1, cctx); | |
222 | } | |
3db935a9 DSH |
223 | |
224 | /* Set supported signature algorithms */ | |
ec2f7e56 | 225 | static int cmd_SignatureAlgorithms(SSL_CONF_CTX *cctx, const char *value) |
0f113f3e MC |
226 | { |
227 | int rv; | |
228 | if (cctx->ssl) | |
229 | rv = SSL_set1_sigalgs_list(cctx->ssl, value); | |
230 | /* NB: ctx == NULL performs syntax checking only */ | |
231 | else | |
232 | rv = SSL_CTX_set1_sigalgs_list(cctx->ctx, value); | |
233 | return rv > 0; | |
234 | } | |
235 | ||
3db935a9 | 236 | /* Set supported client signature algorithms */ |
0f113f3e MC |
237 | static int cmd_ClientSignatureAlgorithms(SSL_CONF_CTX *cctx, |
238 | const char *value) | |
239 | { | |
240 | int rv; | |
241 | if (cctx->ssl) | |
242 | rv = SSL_set1_client_sigalgs_list(cctx->ssl, value); | |
243 | /* NB: ctx == NULL performs syntax checking only */ | |
244 | else | |
245 | rv = SSL_CTX_set1_client_sigalgs_list(cctx->ctx, value); | |
246 | return rv > 0; | |
247 | } | |
3db935a9 | 248 | |
ec2f7e56 | 249 | static int cmd_Curves(SSL_CONF_CTX *cctx, const char *value) |
0f113f3e MC |
250 | { |
251 | int rv; | |
252 | if (cctx->ssl) | |
253 | rv = SSL_set1_curves_list(cctx->ssl, value); | |
254 | /* NB: ctx == NULL performs syntax checking only */ | |
255 | else | |
256 | rv = SSL_CTX_set1_curves_list(cctx->ctx, value); | |
257 | return rv > 0; | |
258 | } | |
259 | ||
10bf4fc2 | 260 | #ifndef OPENSSL_NO_EC |
3db935a9 | 261 | /* ECDH temporary parameters */ |
ec2f7e56 | 262 | static int cmd_ECDHParameters(SSL_CONF_CTX *cctx, const char *value) |
0f113f3e MC |
263 | { |
264 | int onoff = -1, rv = 1; | |
265 | if (!(cctx->flags & SSL_CONF_FLAG_SERVER)) | |
266 | return -2; | |
267 | if (cctx->flags & SSL_CONF_FLAG_FILE) { | |
268 | if (*value == '+') { | |
269 | onoff = 1; | |
270 | value++; | |
271 | } | |
272 | if (*value == '-') { | |
273 | onoff = 0; | |
274 | value++; | |
275 | } | |
276 | if (!strcasecmp(value, "automatic")) { | |
277 | if (onoff == -1) | |
278 | onoff = 1; | |
279 | } else if (onoff != -1) | |
280 | return 0; | |
281 | } else if (cctx->flags & SSL_CONF_FLAG_CMDLINE) { | |
282 | if (!strcmp(value, "auto")) | |
283 | onoff = 1; | |
284 | } | |
285 | ||
286 | if (onoff != -1) { | |
287 | if (cctx->ctx) | |
288 | rv = SSL_CTX_set_ecdh_auto(cctx->ctx, onoff); | |
289 | else if (cctx->ssl) | |
290 | rv = SSL_set_ecdh_auto(cctx->ssl, onoff); | |
291 | } else { | |
292 | EC_KEY *ecdh; | |
293 | int nid; | |
294 | nid = EC_curve_nist2nid(value); | |
295 | if (nid == NID_undef) | |
296 | nid = OBJ_sn2nid(value); | |
297 | if (nid == 0) | |
298 | return 0; | |
299 | ecdh = EC_KEY_new_by_curve_name(nid); | |
300 | if (!ecdh) | |
301 | return 0; | |
302 | if (cctx->ctx) | |
303 | rv = SSL_CTX_set_tmp_ecdh(cctx->ctx, ecdh); | |
304 | else if (cctx->ssl) | |
305 | rv = SSL_set_tmp_ecdh(cctx->ssl, ecdh); | |
306 | EC_KEY_free(ecdh); | |
307 | } | |
308 | ||
309 | return rv > 0; | |
310 | } | |
14536c8c | 311 | #endif |
ec2f7e56 | 312 | static int cmd_CipherString(SSL_CONF_CTX *cctx, const char *value) |
0f113f3e MC |
313 | { |
314 | int rv = 1; | |
315 | if (cctx->ctx) | |
316 | rv = SSL_CTX_set_cipher_list(cctx->ctx, value); | |
317 | if (cctx->ssl) | |
318 | rv = SSL_set_cipher_list(cctx->ssl, value); | |
319 | return rv > 0; | |
320 | } | |
3db935a9 | 321 | |
ec2f7e56 | 322 | static int cmd_Protocol(SSL_CONF_CTX *cctx, const char *value) |
0f113f3e MC |
323 | { |
324 | static const ssl_flag_tbl ssl_protocol_list[] = { | |
325 | SSL_FLAG_TBL_INV("ALL", SSL_OP_NO_SSL_MASK), | |
326 | SSL_FLAG_TBL_INV("SSLv2", SSL_OP_NO_SSLv2), | |
327 | SSL_FLAG_TBL_INV("SSLv3", SSL_OP_NO_SSLv3), | |
328 | SSL_FLAG_TBL_INV("TLSv1", SSL_OP_NO_TLSv1), | |
329 | SSL_FLAG_TBL_INV("TLSv1.1", SSL_OP_NO_TLSv1_1), | |
330 | SSL_FLAG_TBL_INV("TLSv1.2", SSL_OP_NO_TLSv1_2) | |
331 | }; | |
332 | if (!(cctx->flags & SSL_CONF_FLAG_FILE)) | |
333 | return -2; | |
334 | cctx->tbl = ssl_protocol_list; | |
335 | cctx->ntbl = sizeof(ssl_protocol_list) / sizeof(ssl_flag_tbl); | |
336 | return CONF_parse_list(value, ',', 1, ssl_set_option_list, cctx); | |
337 | } | |
3db935a9 | 338 | |
ec2f7e56 | 339 | static int cmd_Options(SSL_CONF_CTX *cctx, const char *value) |
0f113f3e MC |
340 | { |
341 | static const ssl_flag_tbl ssl_option_list[] = { | |
342 | SSL_FLAG_TBL_INV("SessionTicket", SSL_OP_NO_TICKET), | |
343 | SSL_FLAG_TBL_INV("EmptyFragments", | |
344 | SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS), | |
345 | SSL_FLAG_TBL("Bugs", SSL_OP_ALL), | |
346 | SSL_FLAG_TBL_INV("Compression", SSL_OP_NO_COMPRESSION), | |
347 | SSL_FLAG_TBL_SRV("ServerPreference", SSL_OP_CIPHER_SERVER_PREFERENCE), | |
348 | SSL_FLAG_TBL_SRV("NoResumptionOnRenegotiation", | |
349 | SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION), | |
350 | SSL_FLAG_TBL_SRV("DHSingle", SSL_OP_SINGLE_DH_USE), | |
351 | SSL_FLAG_TBL_SRV("ECDHSingle", SSL_OP_SINGLE_ECDH_USE), | |
352 | SSL_FLAG_TBL("UnsafeLegacyRenegotiation", | |
353 | SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION), | |
354 | }; | |
355 | if (!(cctx->flags & SSL_CONF_FLAG_FILE)) | |
356 | return -2; | |
357 | if (value == NULL) | |
358 | return -3; | |
359 | cctx->tbl = ssl_option_list; | |
360 | cctx->ntbl = sizeof(ssl_option_list) / sizeof(ssl_flag_tbl); | |
361 | return CONF_parse_list(value, ',', 1, ssl_set_option_list, cctx); | |
362 | } | |
3db935a9 | 363 | |
ec2f7e56 | 364 | static int cmd_Certificate(SSL_CONF_CTX *cctx, const char *value) |
0f113f3e MC |
365 | { |
366 | int rv = 1; | |
367 | if (!(cctx->flags & SSL_CONF_FLAG_CERTIFICATE)) | |
368 | return -2; | |
369 | if (cctx->ctx) | |
370 | rv = SSL_CTX_use_certificate_chain_file(cctx->ctx, value); | |
371 | if (cctx->ssl) | |
372 | rv = SSL_use_certificate_file(cctx->ssl, value, SSL_FILETYPE_PEM); | |
373 | return rv > 0; | |
374 | } | |
ec2f7e56 DSH |
375 | |
376 | static int cmd_PrivateKey(SSL_CONF_CTX *cctx, const char *value) | |
0f113f3e MC |
377 | { |
378 | int rv = 1; | |
379 | if (!(cctx->flags & SSL_CONF_FLAG_CERTIFICATE)) | |
380 | return -2; | |
381 | if (cctx->ctx) | |
382 | rv = SSL_CTX_use_PrivateKey_file(cctx->ctx, value, SSL_FILETYPE_PEM); | |
383 | if (cctx->ssl) | |
384 | rv = SSL_use_PrivateKey_file(cctx->ssl, value, SSL_FILETYPE_PEM); | |
385 | return rv > 0; | |
386 | } | |
5b7f36e8 DSH |
387 | |
388 | static int cmd_ServerInfoFile(SSL_CONF_CTX *cctx, const char *value) | |
0f113f3e MC |
389 | { |
390 | int rv = 1; | |
391 | if (!(cctx->flags & SSL_CONF_FLAG_CERTIFICATE)) | |
392 | return -2; | |
393 | if (!(cctx->flags & SSL_CONF_FLAG_SERVER)) | |
394 | return -2; | |
395 | if (cctx->ctx) | |
396 | rv = SSL_CTX_use_serverinfo_file(cctx->ctx, value); | |
397 | return rv > 0; | |
398 | } | |
5b7f36e8 | 399 | |
c557f921 DSH |
400 | #ifndef OPENSSL_NO_DH |
401 | static int cmd_DHParameters(SSL_CONF_CTX *cctx, const char *value) | |
0f113f3e MC |
402 | { |
403 | int rv = 0; | |
404 | DH *dh = NULL; | |
405 | BIO *in = NULL; | |
406 | if (!(cctx->flags & SSL_CONF_FLAG_CERTIFICATE)) | |
407 | return -2; | |
408 | if (cctx->ctx || cctx->ssl) { | |
409 | in = BIO_new(BIO_s_file_internal()); | |
410 | if (!in) | |
411 | goto end; | |
412 | if (BIO_read_filename(in, value) <= 0) | |
413 | goto end; | |
414 | dh = PEM_read_bio_DHparams(in, NULL, NULL, NULL); | |
415 | if (!dh) | |
416 | goto end; | |
417 | } else | |
418 | return 1; | |
419 | if (cctx->ctx) | |
420 | rv = SSL_CTX_set_tmp_dh(cctx->ctx, dh); | |
421 | if (cctx->ssl) | |
422 | rv = SSL_set_tmp_dh(cctx->ssl, dh); | |
423 | end: | |
d6407083 | 424 | DH_free(dh); |
0f113f3e MC |
425 | if (in) |
426 | BIO_free(in); | |
427 | return rv > 0; | |
428 | } | |
c557f921 | 429 | #endif |
0f113f3e MC |
430 | typedef struct { |
431 | int (*cmd) (SSL_CONF_CTX *cctx, const char *value); | |
432 | const char *str_file; | |
433 | const char *str_cmdline; | |
434 | unsigned int value_type; | |
435 | } ssl_conf_cmd_tbl; | |
3db935a9 | 436 | |
ec2f7e56 DSH |
437 | /* Table of supported parameters */ |
438 | ||
439 | #define SSL_CONF_CMD(name, cmdopt, type) \ | |
0f113f3e | 440 | {cmd_##name, #name, cmdopt, type} |
ec2f7e56 DSH |
441 | |
442 | #define SSL_CONF_CMD_STRING(name, cmdopt) \ | |
0f113f3e | 443 | SSL_CONF_CMD(name, cmdopt, SSL_CONF_TYPE_STRING) |
3db935a9 | 444 | |
27f3b65f | 445 | static const ssl_conf_cmd_tbl ssl_conf_cmds[] = { |
0f113f3e MC |
446 | SSL_CONF_CMD_STRING(SignatureAlgorithms, "sigalgs"), |
447 | SSL_CONF_CMD_STRING(ClientSignatureAlgorithms, "client_sigalgs"), | |
448 | SSL_CONF_CMD_STRING(Curves, "curves"), | |
10bf4fc2 | 449 | #ifndef OPENSSL_NO_EC |
0f113f3e | 450 | SSL_CONF_CMD_STRING(ECDHParameters, "named_curve"), |
14536c8c | 451 | #endif |
0f113f3e MC |
452 | SSL_CONF_CMD_STRING(CipherString, "cipher"), |
453 | SSL_CONF_CMD_STRING(Protocol, NULL), | |
454 | SSL_CONF_CMD_STRING(Options, NULL), | |
455 | SSL_CONF_CMD(Certificate, "cert", SSL_CONF_TYPE_FILE), | |
456 | SSL_CONF_CMD(PrivateKey, "key", SSL_CONF_TYPE_FILE), | |
457 | SSL_CONF_CMD(ServerInfoFile, NULL, SSL_CONF_TYPE_FILE), | |
c557f921 | 458 | #ifndef OPENSSL_NO_DH |
0f113f3e | 459 | SSL_CONF_CMD(DHParameters, "dhparam", SSL_CONF_TYPE_FILE) |
c557f921 | 460 | #endif |
3db935a9 DSH |
461 | }; |
462 | ||
ec2f7e56 | 463 | static int ssl_conf_cmd_skip_prefix(SSL_CONF_CTX *cctx, const char **pcmd) |
0f113f3e MC |
464 | { |
465 | if (!pcmd || !*pcmd) | |
466 | return 0; | |
467 | /* If a prefix is set, check and skip */ | |
468 | if (cctx->prefix) { | |
469 | if (strlen(*pcmd) <= cctx->prefixlen) | |
470 | return 0; | |
471 | if (cctx->flags & SSL_CONF_FLAG_CMDLINE && | |
472 | strncmp(*pcmd, cctx->prefix, cctx->prefixlen)) | |
473 | return 0; | |
474 | if (cctx->flags & SSL_CONF_FLAG_FILE && | |
475 | strncasecmp(*pcmd, cctx->prefix, cctx->prefixlen)) | |
476 | return 0; | |
477 | *pcmd += cctx->prefixlen; | |
478 | } else if (cctx->flags & SSL_CONF_FLAG_CMDLINE) { | |
479 | if (**pcmd != '-' || !(*pcmd)[1]) | |
480 | return 0; | |
481 | *pcmd += 1; | |
482 | } | |
483 | return 1; | |
484 | } | |
485 | ||
486 | static const ssl_conf_cmd_tbl *ssl_conf_cmd_lookup(SSL_CONF_CTX *cctx, | |
487 | const char *cmd) | |
488 | { | |
489 | const ssl_conf_cmd_tbl *t; | |
490 | size_t i; | |
491 | if (cmd == NULL) | |
492 | return NULL; | |
493 | ||
494 | /* Look for matching parameter name in table */ | |
495 | for (i = 0, t = ssl_conf_cmds; | |
496 | i < sizeof(ssl_conf_cmds) / sizeof(ssl_conf_cmd_tbl); i++, t++) { | |
497 | if (cctx->flags & SSL_CONF_FLAG_CMDLINE) { | |
498 | if (t->str_cmdline && !strcmp(t->str_cmdline, cmd)) | |
499 | return t; | |
500 | } | |
501 | if (cctx->flags & SSL_CONF_FLAG_FILE) { | |
502 | if (t->str_file && !strcasecmp(t->str_file, cmd)) | |
503 | return t; | |
504 | } | |
505 | } | |
506 | return NULL; | |
507 | } | |
ec2f7e56 DSH |
508 | |
509 | int SSL_CONF_cmd(SSL_CONF_CTX *cctx, const char *cmd, const char *value) | |
0f113f3e MC |
510 | { |
511 | const ssl_conf_cmd_tbl *runcmd; | |
512 | if (cmd == NULL) { | |
513 | SSLerr(SSL_F_SSL_CONF_CMD, SSL_R_INVALID_NULL_CMD_NAME); | |
514 | return 0; | |
515 | } | |
516 | ||
517 | if (!ssl_conf_cmd_skip_prefix(cctx, &cmd)) | |
518 | return -2; | |
519 | ||
520 | runcmd = ssl_conf_cmd_lookup(cctx, cmd); | |
521 | ||
522 | if (runcmd) { | |
523 | int rv; | |
524 | if (value == NULL) | |
525 | return -3; | |
526 | rv = runcmd->cmd(cctx, value); | |
527 | if (rv > 0) | |
528 | return 2; | |
529 | if (rv == -2) | |
530 | return -2; | |
531 | if (cctx->flags & SSL_CONF_FLAG_SHOW_ERRORS) { | |
532 | SSLerr(SSL_F_SSL_CONF_CMD, SSL_R_BAD_VALUE); | |
533 | ERR_add_error_data(4, "cmd=", cmd, ", value=", value); | |
534 | } | |
535 | return 0; | |
536 | } | |
537 | ||
538 | if (cctx->flags & SSL_CONF_FLAG_CMDLINE) { | |
539 | if (ctrl_str_option(cctx, cmd)) | |
540 | return 1; | |
541 | } | |
542 | ||
543 | if (cctx->flags & SSL_CONF_FLAG_SHOW_ERRORS) { | |
544 | SSLerr(SSL_F_SSL_CONF_CMD, SSL_R_UNKNOWN_CMD_NAME); | |
545 | ERR_add_error_data(2, "cmd=", cmd); | |
546 | } | |
547 | ||
548 | return -2; | |
549 | } | |
3db935a9 DSH |
550 | |
551 | int SSL_CONF_cmd_argv(SSL_CONF_CTX *cctx, int *pargc, char ***pargv) | |
0f113f3e MC |
552 | { |
553 | int rv; | |
554 | const char *arg = NULL, *argn; | |
555 | if (pargc && *pargc == 0) | |
556 | return 0; | |
557 | if (!pargc || *pargc > 0) | |
558 | arg = **pargv; | |
559 | if (arg == NULL) | |
560 | return 0; | |
561 | if (!pargc || *pargc > 1) | |
562 | argn = (*pargv)[1]; | |
563 | else | |
564 | argn = NULL; | |
565 | cctx->flags &= ~SSL_CONF_FLAG_FILE; | |
566 | cctx->flags |= SSL_CONF_FLAG_CMDLINE; | |
567 | rv = SSL_CONF_cmd(cctx, arg, argn); | |
568 | if (rv > 0) { | |
569 | /* Success: update pargc, pargv */ | |
570 | (*pargv) += rv; | |
571 | if (pargc) | |
572 | (*pargc) -= rv; | |
573 | return rv; | |
574 | } | |
575 | /* Unknown switch: indicate no arguments processed */ | |
576 | if (rv == -2) | |
577 | return 0; | |
578 | /* Some error occurred processing command, return fatal error */ | |
579 | if (rv == 0) | |
580 | return -1; | |
581 | return rv; | |
582 | } | |
3db935a9 | 583 | |
ec2f7e56 | 584 | int SSL_CONF_cmd_value_type(SSL_CONF_CTX *cctx, const char *cmd) |
0f113f3e MC |
585 | { |
586 | if (ssl_conf_cmd_skip_prefix(cctx, &cmd)) { | |
587 | const ssl_conf_cmd_tbl *runcmd; | |
588 | runcmd = ssl_conf_cmd_lookup(cctx, cmd); | |
589 | if (runcmd) | |
590 | return runcmd->value_type; | |
591 | } | |
592 | return SSL_CONF_TYPE_UNKNOWN; | |
593 | } | |
ec2f7e56 | 594 | |
3db935a9 | 595 | SSL_CONF_CTX *SSL_CONF_CTX_new(void) |
0f113f3e MC |
596 | { |
597 | SSL_CONF_CTX *ret; | |
598 | ret = OPENSSL_malloc(sizeof(SSL_CONF_CTX)); | |
599 | if (ret) { | |
600 | ret->flags = 0; | |
601 | ret->prefix = NULL; | |
602 | ret->prefixlen = 0; | |
603 | ret->ssl = NULL; | |
604 | ret->ctx = NULL; | |
605 | ret->poptions = NULL; | |
606 | ret->pcert_flags = NULL; | |
607 | ret->tbl = NULL; | |
608 | ret->ntbl = 0; | |
609 | } | |
610 | return ret; | |
611 | } | |
3db935a9 | 612 | |
ec2f7e56 | 613 | int SSL_CONF_CTX_finish(SSL_CONF_CTX *cctx) |
0f113f3e MC |
614 | { |
615 | return 1; | |
616 | } | |
ec2f7e56 | 617 | |
3db935a9 | 618 | void SSL_CONF_CTX_free(SSL_CONF_CTX *cctx) |
0f113f3e MC |
619 | { |
620 | if (cctx) { | |
621 | if (cctx->prefix) | |
622 | OPENSSL_free(cctx->prefix); | |
623 | OPENSSL_free(cctx); | |
624 | } | |
625 | } | |
3db935a9 DSH |
626 | |
627 | unsigned int SSL_CONF_CTX_set_flags(SSL_CONF_CTX *cctx, unsigned int flags) | |
0f113f3e MC |
628 | { |
629 | cctx->flags |= flags; | |
630 | return cctx->flags; | |
631 | } | |
3db935a9 DSH |
632 | |
633 | unsigned int SSL_CONF_CTX_clear_flags(SSL_CONF_CTX *cctx, unsigned int flags) | |
0f113f3e MC |
634 | { |
635 | cctx->flags &= ~flags; | |
636 | return cctx->flags; | |
637 | } | |
3db935a9 DSH |
638 | |
639 | int SSL_CONF_CTX_set1_prefix(SSL_CONF_CTX *cctx, const char *pre) | |
0f113f3e MC |
640 | { |
641 | char *tmp = NULL; | |
642 | if (pre) { | |
643 | tmp = BUF_strdup(pre); | |
644 | if (tmp == NULL) | |
645 | return 0; | |
646 | } | |
647 | if (cctx->prefix) | |
648 | OPENSSL_free(cctx->prefix); | |
649 | cctx->prefix = tmp; | |
650 | if (tmp) | |
651 | cctx->prefixlen = strlen(tmp); | |
652 | else | |
653 | cctx->prefixlen = 0; | |
654 | return 1; | |
655 | } | |
3db935a9 DSH |
656 | |
657 | void SSL_CONF_CTX_set_ssl(SSL_CONF_CTX *cctx, SSL *ssl) | |
0f113f3e MC |
658 | { |
659 | cctx->ssl = ssl; | |
660 | cctx->ctx = NULL; | |
661 | if (ssl) { | |
662 | cctx->poptions = &ssl->options; | |
663 | cctx->pcert_flags = &ssl->cert->cert_flags; | |
664 | } else { | |
665 | cctx->poptions = NULL; | |
666 | cctx->pcert_flags = NULL; | |
667 | } | |
668 | } | |
3db935a9 DSH |
669 | |
670 | void SSL_CONF_CTX_set_ssl_ctx(SSL_CONF_CTX *cctx, SSL_CTX *ctx) | |
0f113f3e MC |
671 | { |
672 | cctx->ctx = ctx; | |
673 | cctx->ssl = NULL; | |
674 | if (ctx) { | |
675 | cctx->poptions = &ctx->options; | |
676 | cctx->pcert_flags = &ctx->cert->cert_flags; | |
677 | } else { | |
678 | cctx->poptions = NULL; | |
679 | cctx->pcert_flags = NULL; | |
680 | } | |
681 | } |