]>
Commit | Line | Data |
---|---|---|
62dcd2aa DDO |
1 | /* |
2 | * Copyright 2007-2019 The OpenSSL Project Authors. All Rights Reserved. | |
3 | * Copyright Nokia 2007-2019 | |
4 | * Copyright Siemens AG 2015-2019 | |
5 | * | |
6 | * Licensed under the Apache License 2.0 (the "License"). You may not use | |
7 | * this file except in compliance with the License. You can obtain a copy | |
8 | * in the file LICENSE in the source distribution or at | |
9 | * https://www.openssl.org/source/license.html | |
10 | */ | |
11 | ||
12 | /* general CMP server functions */ | |
13 | ||
14 | #include <openssl/asn1t.h> | |
15 | ||
16 | #include "cmp_local.h" | |
17 | ||
18 | /* explicit #includes not strictly needed since implied by the above: */ | |
19 | #include <openssl/cmp.h> | |
20 | #include <openssl/err.h> | |
21 | ||
22 | /* the context for the generic CMP server */ | |
23 | struct ossl_cmp_srv_ctx_st | |
24 | { | |
25 | OSSL_CMP_CTX *ctx; /* Client CMP context, partly reused for srv */ | |
26 | void *custom_ctx; /* pointer to specific server context */ | |
27 | ||
28 | OSSL_CMP_SRV_cert_request_cb_t process_cert_request; | |
29 | OSSL_CMP_SRV_rr_cb_t process_rr; | |
30 | OSSL_CMP_SRV_genm_cb_t process_genm; | |
31 | OSSL_CMP_SRV_error_cb_t process_error; | |
32 | OSSL_CMP_SRV_certConf_cb_t process_certConf; | |
33 | OSSL_CMP_SRV_pollReq_cb_t process_pollReq; | |
34 | ||
35 | int sendUnprotectedErrors; /* Send error and rejection msgs unprotected */ | |
36 | int acceptUnprotected; /* Accept requests with no/invalid prot. */ | |
37 | int acceptRAVerified; /* Accept ir/cr/kur with POPO RAVerified */ | |
38 | int grantImplicitConfirm; /* Grant implicit confirmation if requested */ | |
39 | ||
40 | }; /* OSSL_CMP_SRV_CTX */ | |
41 | ||
42 | void OSSL_CMP_SRV_CTX_free(OSSL_CMP_SRV_CTX *srv_ctx) | |
43 | { | |
44 | if (srv_ctx == NULL) | |
45 | return; | |
46 | ||
47 | OSSL_CMP_CTX_free(srv_ctx->ctx); | |
48 | OPENSSL_free(srv_ctx); | |
49 | } | |
50 | ||
51 | OSSL_CMP_SRV_CTX *OSSL_CMP_SRV_CTX_new(void) | |
52 | { | |
53 | OSSL_CMP_SRV_CTX *ctx = OPENSSL_zalloc(sizeof(OSSL_CMP_SRV_CTX)); | |
54 | ||
55 | if (ctx == NULL) | |
56 | goto err; | |
57 | ||
58 | if ((ctx->ctx = OSSL_CMP_CTX_new()) == NULL) | |
59 | goto err; | |
60 | ||
61 | /* all other elements are initialized to 0 or NULL, respectively */ | |
62 | return ctx; | |
63 | err: | |
64 | OSSL_CMP_SRV_CTX_free(ctx); | |
65 | return NULL; | |
66 | } | |
67 | ||
68 | int OSSL_CMP_SRV_CTX_init(OSSL_CMP_SRV_CTX *srv_ctx, void *custom_ctx, | |
69 | OSSL_CMP_SRV_cert_request_cb_t process_cert_request, | |
70 | OSSL_CMP_SRV_rr_cb_t process_rr, | |
71 | OSSL_CMP_SRV_genm_cb_t process_genm, | |
72 | OSSL_CMP_SRV_error_cb_t process_error, | |
73 | OSSL_CMP_SRV_certConf_cb_t process_certConf, | |
74 | OSSL_CMP_SRV_pollReq_cb_t process_pollReq) | |
75 | { | |
76 | if (srv_ctx == NULL) { | |
77 | CMPerr(0, CMP_R_NULL_ARGUMENT); | |
78 | return 0; | |
79 | } | |
80 | srv_ctx->custom_ctx = custom_ctx; | |
81 | srv_ctx->process_cert_request = process_cert_request; | |
82 | srv_ctx->process_rr = process_rr; | |
83 | srv_ctx->process_genm = process_genm; | |
84 | srv_ctx->process_error = process_error; | |
85 | srv_ctx->process_certConf = process_certConf; | |
86 | srv_ctx->process_pollReq = process_pollReq; | |
87 | return 1; | |
88 | } | |
89 | ||
90 | OSSL_CMP_CTX *OSSL_CMP_SRV_CTX_get0_cmp_ctx(const OSSL_CMP_SRV_CTX *srv_ctx) | |
91 | { | |
92 | if (srv_ctx == NULL) { | |
93 | CMPerr(0, CMP_R_NULL_ARGUMENT); | |
94 | return NULL; | |
95 | } | |
96 | return srv_ctx->ctx; | |
97 | } | |
98 | ||
99 | void *OSSL_CMP_SRV_CTX_get0_custom_ctx(const OSSL_CMP_SRV_CTX *srv_ctx) | |
100 | { | |
101 | if (srv_ctx == NULL) { | |
102 | CMPerr(0, CMP_R_NULL_ARGUMENT); | |
103 | return NULL; | |
104 | } | |
105 | return srv_ctx->custom_ctx; | |
106 | } | |
107 | ||
108 | int OSSL_CMP_SRV_CTX_set_send_unprotected_errors(OSSL_CMP_SRV_CTX *srv_ctx, | |
109 | int val) | |
110 | { | |
111 | if (srv_ctx == NULL) { | |
112 | CMPerr(0, CMP_R_NULL_ARGUMENT); | |
113 | return 0; | |
114 | } | |
115 | srv_ctx->sendUnprotectedErrors = val != 0; | |
116 | return 1; | |
117 | } | |
118 | ||
119 | int OSSL_CMP_SRV_CTX_set_accept_unprotected(OSSL_CMP_SRV_CTX *srv_ctx, int val) | |
120 | { | |
121 | if (srv_ctx == NULL) { | |
122 | CMPerr(0, CMP_R_NULL_ARGUMENT); | |
123 | return 0; | |
124 | } | |
125 | srv_ctx->acceptUnprotected = val != 0; | |
126 | return 1; | |
127 | } | |
128 | ||
129 | int OSSL_CMP_SRV_CTX_set_accept_raverified(OSSL_CMP_SRV_CTX *srv_ctx, int val) | |
130 | { | |
131 | if (srv_ctx == NULL) { | |
132 | CMPerr(0, CMP_R_NULL_ARGUMENT); | |
133 | return 0; | |
134 | } | |
135 | srv_ctx->acceptRAVerified = val != 0; | |
136 | return 1; | |
137 | } | |
138 | ||
139 | int OSSL_CMP_SRV_CTX_set_grant_implicit_confirm(OSSL_CMP_SRV_CTX *srv_ctx, | |
140 | int val) | |
141 | { | |
142 | if (srv_ctx == NULL) { | |
143 | CMPerr(0, CMP_R_NULL_ARGUMENT); | |
144 | return 0; | |
145 | } | |
146 | srv_ctx->grantImplicitConfirm = val != 0; | |
147 | return 1; | |
148 | } | |
149 | ||
150 | /* | |
151 | * Processes an ir/cr/p10cr/kur and returns a certification response. | |
152 | * Only handles the first certification request contained in req | |
153 | * returns an ip/cp/kup on success and NULL on error | |
154 | */ | |
155 | static OSSL_CMP_MSG *process_cert_request(OSSL_CMP_SRV_CTX *srv_ctx, | |
156 | const OSSL_CMP_MSG *req) | |
157 | { | |
158 | OSSL_CMP_MSG *msg = NULL; | |
159 | OSSL_CMP_PKISI *si = NULL; | |
160 | X509 *certOut = NULL; | |
161 | STACK_OF(X509) *chainOut = NULL, *caPubs = NULL; | |
162 | const OSSL_CRMF_MSG *crm = NULL; | |
163 | const X509_REQ *p10cr = NULL; | |
164 | int bodytype; | |
165 | int certReqId; | |
166 | ||
167 | if (!ossl_assert(srv_ctx != NULL && srv_ctx->ctx != NULL && req != NULL)) | |
168 | return NULL; | |
169 | ||
170 | switch (ossl_cmp_msg_get_bodytype(req)) { | |
171 | case OSSL_CMP_PKIBODY_P10CR: | |
172 | case OSSL_CMP_PKIBODY_CR: | |
173 | bodytype = OSSL_CMP_PKIBODY_CP; | |
174 | break; | |
175 | case OSSL_CMP_PKIBODY_IR: | |
176 | bodytype = OSSL_CMP_PKIBODY_IP; | |
177 | break; | |
178 | case OSSL_CMP_PKIBODY_KUR: | |
179 | bodytype = OSSL_CMP_PKIBODY_KUP; | |
180 | break; | |
181 | default: | |
182 | CMPerr(0, CMP_R_UNEXPECTED_PKIBODY); | |
183 | return NULL; | |
184 | } | |
185 | ||
186 | if (ossl_cmp_msg_get_bodytype(req) == OSSL_CMP_PKIBODY_P10CR) { | |
187 | certReqId = OSSL_CMP_CERTREQID; | |
188 | p10cr = req->body->value.p10cr; | |
189 | } else { | |
190 | OSSL_CRMF_MSGS *reqs = req->body->value.ir; /* same for cr and kur */ | |
191 | ||
192 | if (sk_OSSL_CRMF_MSG_num(reqs) != 1) { /* TODO: handle case > 1 */ | |
193 | CMPerr(0, CMP_R_MULTIPLE_REQUESTS_NOT_SUPPORTED); | |
194 | return NULL; | |
195 | } | |
196 | ||
197 | if ((crm = sk_OSSL_CRMF_MSG_value(reqs, OSSL_CMP_CERTREQID)) == NULL) { | |
198 | CMPerr(0, CMP_R_CERTREQMSG_NOT_FOUND); | |
199 | return NULL; | |
200 | } | |
201 | certReqId = OSSL_CRMF_MSG_get_certReqId(crm); | |
202 | } | |
203 | ||
204 | if (!ossl_cmp_verify_popo(req, srv_ctx->acceptRAVerified)) { | |
205 | /* Proof of possession could not be verified */ | |
206 | si = OSSL_CMP_STATUSINFO_new(OSSL_CMP_PKISTATUS_rejection, | |
207 | 1 << OSSL_CMP_PKIFAILUREINFO_badPOP, | |
208 | ERR_reason_error_string(ERR_peek_error())); | |
209 | if (si == NULL) | |
210 | return NULL; | |
211 | } else { | |
212 | OSSL_CMP_PKIHEADER *hdr = OSSL_CMP_MSG_get0_header(req); | |
213 | ||
214 | si = srv_ctx->process_cert_request(srv_ctx, req, certReqId, crm, p10cr, | |
215 | &certOut, &chainOut, &caPubs); | |
216 | if (si == NULL) | |
217 | goto err; | |
7e765f46 DDO |
218 | /* set OSSL_CMP_OPT_IMPLICIT_CONFIRM if and only if transaction ends */ |
219 | if (!OSSL_CMP_CTX_set_option(srv_ctx->ctx, OSSL_CMP_OPT_IMPLICIT_CONFIRM, | |
62dcd2aa DDO |
220 | ossl_cmp_hdr_has_implicitConfirm(hdr) |
221 | && srv_ctx->grantImplicitConfirm | |
222 | /* do not set if polling starts: */ | |
223 | && certOut != NULL)) | |
224 | goto err; | |
225 | } | |
226 | ||
227 | msg = ossl_cmp_certRep_new(srv_ctx->ctx, bodytype, certReqId, si, | |
228 | certOut, chainOut, caPubs, 0 /* encrypted */, | |
229 | srv_ctx->sendUnprotectedErrors); | |
230 | /* | |
231 | * TODO when implemented in ossl_cmp_certrep_new(): | |
232 | * in case OSSL_CRMF_POPO_KEYENC, set encrypted | |
233 | */ | |
234 | if (msg == NULL) | |
235 | CMPerr(0, CMP_R_ERROR_CREATING_CERTREP); | |
236 | ||
237 | err: | |
238 | OSSL_CMP_PKISI_free(si); | |
239 | X509_free(certOut); | |
240 | sk_X509_pop_free(chainOut, X509_free); | |
241 | sk_X509_pop_free(caPubs, X509_free); | |
242 | return msg; | |
243 | } | |
244 | ||
245 | static OSSL_CMP_MSG *process_rr(OSSL_CMP_SRV_CTX *srv_ctx, | |
246 | const OSSL_CMP_MSG *req) | |
247 | { | |
248 | OSSL_CMP_MSG *msg = NULL; | |
249 | OSSL_CMP_REVDETAILS *details; | |
250 | OSSL_CRMF_CERTID *certId; | |
251 | OSSL_CRMF_CERTTEMPLATE *tmpl; | |
8cc86b81 | 252 | const X509_NAME *issuer; |
62dcd2aa DDO |
253 | ASN1_INTEGER *serial; |
254 | OSSL_CMP_PKISI *si; | |
255 | ||
256 | if (!ossl_assert(srv_ctx != NULL && srv_ctx->ctx != NULL && req != NULL)) | |
257 | return NULL; | |
258 | ||
259 | if (sk_OSSL_CMP_REVDETAILS_num(req->body->value.rr) != 1) { | |
260 | /* TODO: handle multiple elements if multiple requests have been sent */ | |
261 | CMPerr(0, CMP_R_MULTIPLE_REQUESTS_NOT_SUPPORTED); | |
262 | return NULL; | |
263 | } | |
264 | ||
265 | if ((details = sk_OSSL_CMP_REVDETAILS_value(req->body->value.rr, | |
266 | OSSL_CMP_REVREQSID)) == NULL) { | |
7e765f46 | 267 | CMPerr(0, CMP_R_ERROR_PROCESSING_MESSAGE); |
62dcd2aa DDO |
268 | return NULL; |
269 | } | |
270 | ||
271 | tmpl = details->certDetails; | |
272 | issuer = OSSL_CRMF_CERTTEMPLATE_get0_issuer(tmpl); | |
273 | serial = OSSL_CRMF_CERTTEMPLATE_get0_serialNumber(tmpl); | |
274 | /* here issuer and serial may safely be NULL */ | |
275 | if ((certId = OSSL_CRMF_CERTID_gen(issuer, serial)) == NULL) | |
276 | return NULL; | |
277 | if ((si = srv_ctx->process_rr(srv_ctx, req, issuer, serial)) == NULL) | |
278 | goto err; | |
279 | ||
280 | if ((msg = ossl_cmp_rp_new(srv_ctx->ctx, si, certId, | |
281 | srv_ctx->sendUnprotectedErrors)) == NULL) | |
282 | CMPerr(0, CMP_R_ERROR_CREATING_RR); | |
283 | ||
284 | err: | |
285 | OSSL_CRMF_CERTID_free(certId); | |
286 | OSSL_CMP_PKISI_free(si); | |
287 | return msg; | |
288 | } | |
289 | ||
290 | /* | |
291 | * Processes genm and creates a genp message mirroring the contents of the | |
292 | * incoming message | |
293 | */ | |
294 | static OSSL_CMP_MSG *process_genm(OSSL_CMP_SRV_CTX *srv_ctx, | |
295 | const OSSL_CMP_MSG *req) | |
296 | { | |
297 | OSSL_CMP_GENMSGCONTENT *itavs; | |
298 | OSSL_CMP_MSG *msg; | |
299 | ||
300 | if (!ossl_assert(srv_ctx != NULL && srv_ctx->ctx != NULL && req != NULL)) | |
301 | return NULL; | |
302 | ||
303 | if (!srv_ctx->process_genm(srv_ctx, req, req->body->value.genm, &itavs)) | |
304 | return NULL; | |
305 | ||
306 | msg = ossl_cmp_genp_new(srv_ctx->ctx, itavs); | |
307 | sk_OSSL_CMP_ITAV_pop_free(itavs, OSSL_CMP_ITAV_free); | |
308 | return msg; | |
309 | } | |
310 | ||
311 | static OSSL_CMP_MSG *process_error(OSSL_CMP_SRV_CTX *srv_ctx, | |
312 | const OSSL_CMP_MSG *req) | |
313 | { | |
314 | OSSL_CMP_ERRORMSGCONTENT *errorContent; | |
315 | OSSL_CMP_MSG *msg; | |
316 | ||
317 | if (!ossl_assert(srv_ctx != NULL && srv_ctx->ctx != NULL && req != NULL)) | |
318 | return NULL; | |
319 | errorContent = req->body->value.error; | |
320 | srv_ctx->process_error(srv_ctx, req, errorContent->pKIStatusInfo, | |
321 | errorContent->errorCode, errorContent->errorDetails); | |
322 | ||
323 | if ((msg = ossl_cmp_pkiconf_new(srv_ctx->ctx)) == NULL) | |
324 | CMPerr(0, CMP_R_ERROR_CREATING_PKICONF); | |
325 | return msg; | |
326 | } | |
327 | ||
328 | static OSSL_CMP_MSG *process_certConf(OSSL_CMP_SRV_CTX *srv_ctx, | |
329 | const OSSL_CMP_MSG *req) | |
330 | { | |
331 | OSSL_CMP_CTX *ctx; | |
332 | OSSL_CMP_CERTCONFIRMCONTENT *ccc; | |
333 | int num; | |
334 | OSSL_CMP_MSG *msg = NULL; | |
335 | OSSL_CMP_CERTSTATUS *status = NULL; | |
336 | ||
337 | if (!ossl_assert(srv_ctx != NULL && srv_ctx->ctx != NULL && req != NULL)) | |
338 | return NULL; | |
339 | ||
340 | ctx = srv_ctx->ctx; | |
341 | ccc = req->body->value.certConf; | |
342 | num = sk_OSSL_CMP_CERTSTATUS_num(ccc); | |
343 | ||
7e765f46 | 344 | if (OSSL_CMP_CTX_get_option(ctx, OSSL_CMP_OPT_IMPLICIT_CONFIRM) == 1) { |
62dcd2aa DDO |
345 | CMPerr(0, CMP_R_ERROR_UNEXPECTED_CERTCONF); |
346 | return NULL; | |
347 | } | |
348 | ||
349 | if (num == 0) { | |
350 | ossl_cmp_err(ctx, "certificate rejected by client"); | |
351 | } else { | |
352 | if (num > 1) | |
353 | ossl_cmp_warn(ctx, "All CertStatus but the first will be ignored"); | |
354 | status = sk_OSSL_CMP_CERTSTATUS_value(ccc, OSSL_CMP_CERTREQID); | |
355 | } | |
356 | ||
357 | if (status != NULL) { | |
358 | int certReqId = ossl_cmp_asn1_get_int(status->certReqId); | |
359 | ASN1_OCTET_STRING *certHash = status->certHash; | |
360 | OSSL_CMP_PKISI *si = status->statusInfo; | |
361 | ||
362 | if (!srv_ctx->process_certConf(srv_ctx, req, certReqId, certHash, si)) | |
363 | return NULL; /* reason code may be: CMP_R_CERTHASH_UNMATCHED */ | |
364 | ||
365 | if (si != NULL && ossl_cmp_pkisi_get_status(si) | |
366 | != OSSL_CMP_PKISTATUS_accepted) { | |
367 | int pki_status = ossl_cmp_pkisi_get_status(si); | |
368 | const char *str = ossl_cmp_PKIStatus_to_string(pki_status); | |
369 | ||
370 | ossl_cmp_log2(INFO, ctx, "certificate rejected by client %s %s", | |
371 | str == NULL ? "without" : "with", | |
372 | str == NULL ? "PKIStatus" : str); | |
373 | } | |
374 | } | |
375 | ||
376 | if ((msg = ossl_cmp_pkiconf_new(ctx)) == NULL) | |
377 | CMPerr(0, CMP_R_ERROR_CREATING_PKICONF); | |
378 | return msg; | |
379 | } | |
380 | ||
381 | static OSSL_CMP_MSG *process_pollReq(OSSL_CMP_SRV_CTX *srv_ctx, | |
382 | const OSSL_CMP_MSG *req) | |
383 | { | |
384 | OSSL_CMP_POLLREQCONTENT *prc; | |
385 | OSSL_CMP_POLLREQ *pr; | |
386 | int certReqId; | |
387 | OSSL_CMP_MSG *certReq; | |
388 | int64_t check_after = 0; | |
389 | OSSL_CMP_MSG *msg = NULL; | |
390 | ||
391 | if (!ossl_assert(srv_ctx != NULL && srv_ctx->ctx != NULL && req != NULL)) | |
392 | return NULL; | |
393 | ||
394 | prc = req->body->value.pollReq; | |
395 | if (sk_OSSL_CMP_POLLREQ_num(prc) != 1) { /* TODO: handle case > 1 */ | |
396 | CMPerr(0, CMP_R_MULTIPLE_REQUESTS_NOT_SUPPORTED); | |
397 | return NULL; | |
398 | } | |
399 | ||
400 | pr = sk_OSSL_CMP_POLLREQ_value(prc, 0); | |
401 | certReqId = ossl_cmp_asn1_get_int(pr->certReqId); | |
402 | if (!srv_ctx->process_pollReq(srv_ctx, req, certReqId, | |
403 | &certReq, &check_after)) | |
404 | return NULL; | |
405 | ||
406 | if (certReq != NULL) { | |
407 | msg = process_cert_request(srv_ctx, certReq); | |
408 | OSSL_CMP_MSG_free(certReq); | |
409 | } else { | |
410 | if ((msg = ossl_cmp_pollRep_new(srv_ctx->ctx, certReqId, | |
411 | check_after)) == NULL) | |
412 | CMPerr(0, CMP_R_ERROR_CREATING_POLLREP); | |
413 | } | |
414 | return msg; | |
415 | } | |
416 | ||
417 | /* | |
7e765f46 DDO |
418 | * Determine whether missing/invalid protection of request message is allowed. |
419 | * Return 1 on acceptance, 0 on rejection, or -1 on (internal) error. | |
62dcd2aa DDO |
420 | */ |
421 | static int unprotected_exception(const OSSL_CMP_CTX *ctx, | |
422 | const OSSL_CMP_MSG *req, | |
423 | int invalid_protection, | |
424 | int accept_unprotected_requests) | |
425 | { | |
7e765f46 DDO |
426 | if (!ossl_assert(ctx != NULL && req != NULL)) |
427 | return -1; | |
428 | ||
62dcd2aa DDO |
429 | if (accept_unprotected_requests) { |
430 | ossl_cmp_log1(WARN, ctx, "ignoring %s protection of request message", | |
431 | invalid_protection ? "invalid" : "missing"); | |
432 | return 1; | |
433 | } | |
434 | if (ossl_cmp_msg_get_bodytype(req) == OSSL_CMP_PKIBODY_ERROR | |
435 | && OSSL_CMP_CTX_get_option(ctx, OSSL_CMP_OPT_UNPROTECTED_ERRORS) == 1) { | |
436 | ossl_cmp_warn(ctx, "ignoring missing protection of error message"); | |
437 | return 1; | |
438 | } | |
439 | return 0; | |
440 | } | |
441 | ||
442 | /* | |
443 | * returns created message and NULL on internal error | |
444 | */ | |
445 | OSSL_CMP_MSG *OSSL_CMP_SRV_process_request(OSSL_CMP_SRV_CTX *srv_ctx, | |
446 | const OSSL_CMP_MSG *req) | |
447 | { | |
448 | OSSL_CMP_CTX *ctx; | |
449 | OSSL_CMP_PKIHEADER *hdr; | |
450 | int req_type, rsp_type; | |
451 | OSSL_CMP_MSG *rsp = NULL; | |
452 | ||
453 | if (srv_ctx == NULL || srv_ctx->ctx == NULL | |
454 | || req == NULL || req->body == NULL | |
455 | || (hdr = OSSL_CMP_MSG_get0_header(req)) == NULL) { | |
456 | CMPerr(0, CMP_R_NULL_ARGUMENT); | |
457 | return 0; | |
458 | } | |
459 | ctx = srv_ctx->ctx; | |
460 | ||
461 | if (hdr->sender->type != GEN_DIRNAME) { | |
462 | CMPerr(0, CMP_R_SENDER_GENERALNAME_TYPE_NOT_SUPPORTED); | |
463 | goto err; | |
464 | } | |
465 | if (!OSSL_CMP_CTX_set1_recipient(ctx, hdr->sender->d.directoryName)) | |
466 | goto err; | |
467 | ||
468 | req_type = ossl_cmp_msg_get_bodytype(req); | |
469 | switch (req_type) { | |
470 | case OSSL_CMP_PKIBODY_IR: | |
471 | case OSSL_CMP_PKIBODY_CR: | |
472 | case OSSL_CMP_PKIBODY_P10CR: | |
473 | case OSSL_CMP_PKIBODY_KUR: | |
474 | case OSSL_CMP_PKIBODY_RR: | |
475 | case OSSL_CMP_PKIBODY_GENM: | |
476 | case OSSL_CMP_PKIBODY_ERROR: | |
477 | if (ctx->transactionID != NULL) { | |
478 | char *tid; | |
479 | ||
480 | tid = OPENSSL_buf2hexstr(ctx->transactionID->data, | |
481 | ctx->transactionID->length); | |
482 | ossl_cmp_log1(WARN, ctx, | |
483 | "Assuming that last transaction with ID=%s got aborted", | |
484 | tid); | |
485 | OPENSSL_free(tid); | |
486 | } | |
487 | /* start of a new transaction, set transactionID and senderNonce */ | |
488 | if (!OSSL_CMP_CTX_set1_transactionID(ctx, hdr->transactionID) | |
489 | || !ossl_cmp_ctx_set1_recipNonce(ctx, hdr->senderNonce)) | |
490 | goto err; | |
491 | break; | |
492 | default: | |
493 | /* transactionID should be already initialized */ | |
494 | if (ctx->transactionID == NULL) { | |
495 | CMPerr(0, CMP_R_UNEXPECTED_PKIBODY); | |
496 | /* ignore any (extra) error in next two function calls: */ | |
497 | (void)OSSL_CMP_CTX_set1_transactionID(ctx, hdr->transactionID); | |
498 | (void)ossl_cmp_ctx_set1_recipNonce(ctx, hdr->senderNonce); | |
499 | goto err; | |
500 | } | |
501 | } | |
502 | ||
503 | if (ossl_cmp_msg_check_received(ctx, req, unprotected_exception, | |
504 | srv_ctx->acceptUnprotected) < 0) | |
505 | goto err; | |
506 | ||
507 | switch (req_type) { | |
508 | case OSSL_CMP_PKIBODY_IR: | |
509 | case OSSL_CMP_PKIBODY_CR: | |
510 | case OSSL_CMP_PKIBODY_P10CR: | |
511 | case OSSL_CMP_PKIBODY_KUR: | |
512 | if (srv_ctx->process_cert_request == NULL) | |
513 | CMPerr(0, CMP_R_UNEXPECTED_PKIBODY); | |
514 | else | |
515 | rsp = process_cert_request(srv_ctx, req); | |
516 | break; | |
517 | case OSSL_CMP_PKIBODY_RR: | |
518 | if (srv_ctx->process_rr == NULL) | |
519 | CMPerr(0, CMP_R_UNEXPECTED_PKIBODY); | |
520 | else | |
521 | rsp = process_rr(srv_ctx, req); | |
522 | break; | |
523 | case OSSL_CMP_PKIBODY_GENM: | |
524 | if (srv_ctx->process_genm == NULL) | |
525 | CMPerr(0, CMP_R_UNEXPECTED_PKIBODY); | |
526 | else | |
527 | rsp = process_genm(srv_ctx, req); | |
528 | break; | |
529 | case OSSL_CMP_PKIBODY_ERROR: | |
530 | if (srv_ctx->process_error == NULL) | |
531 | CMPerr(0, CMP_R_UNEXPECTED_PKIBODY); | |
532 | else | |
533 | rsp = process_error(srv_ctx, req); | |
534 | break; | |
535 | case OSSL_CMP_PKIBODY_CERTCONF: | |
536 | if (srv_ctx->process_certConf == NULL) | |
537 | CMPerr(0, CMP_R_UNEXPECTED_PKIBODY); | |
538 | else | |
539 | rsp = process_certConf(srv_ctx, req); | |
540 | break; | |
541 | case OSSL_CMP_PKIBODY_POLLREQ: | |
542 | if (srv_ctx->process_pollReq == NULL) | |
543 | CMPerr(0, CMP_R_UNEXPECTED_PKIBODY); | |
544 | else | |
545 | rsp = process_pollReq(srv_ctx, req); | |
546 | break; | |
547 | default: | |
548 | /* TODO possibly support further request message types */ | |
549 | CMPerr(0, CMP_R_UNEXPECTED_PKIBODY); | |
550 | } | |
551 | ||
552 | err: | |
553 | if (rsp == NULL) { | |
554 | /* on error, try to respond with CMP error message to client */ | |
555 | const char *data = NULL; | |
556 | int flags = 0; | |
557 | unsigned long err = ERR_peek_error_data(&data, &flags); | |
558 | int fail_info = 1 << OSSL_CMP_PKIFAILUREINFO_badRequest; | |
559 | /* TODO fail_info could be more specific */ | |
560 | OSSL_CMP_PKISI *si = NULL; | |
561 | ||
562 | if ((si = OSSL_CMP_STATUSINFO_new(OSSL_CMP_PKISTATUS_rejection, | |
563 | fail_info, NULL)) == NULL) | |
564 | return 0; | |
565 | if (err != 0 && (flags & ERR_TXT_STRING) != 0) | |
566 | data = ERR_reason_error_string(err); | |
567 | rsp = ossl_cmp_error_new(srv_ctx->ctx, si, | |
568 | err != 0 ? ERR_GET_REASON(err) : -1, | |
569 | data, srv_ctx->sendUnprotectedErrors); | |
570 | OSSL_CMP_PKISI_free(si); | |
571 | } | |
572 | ||
573 | /* possibly close the transaction */ | |
574 | rsp_type = | |
575 | rsp != NULL ? ossl_cmp_msg_get_bodytype(rsp) : OSSL_CMP_PKIBODY_ERROR; | |
576 | switch (rsp_type) { | |
577 | case OSSL_CMP_PKIBODY_IP: | |
578 | case OSSL_CMP_PKIBODY_CP: | |
579 | case OSSL_CMP_PKIBODY_KUP: | |
580 | case OSSL_CMP_PKIBODY_RP: | |
7e765f46 | 581 | if (OSSL_CMP_CTX_get_option(ctx, OSSL_CMP_OPT_IMPLICIT_CONFIRM) == 0) |
62dcd2aa DDO |
582 | break; |
583 | /* fall through */ | |
584 | ||
585 | case OSSL_CMP_PKIBODY_PKICONF: | |
586 | case OSSL_CMP_PKIBODY_GENP: | |
587 | case OSSL_CMP_PKIBODY_ERROR: | |
588 | /* TODO possibly support further terminating response message types */ | |
589 | (void)OSSL_CMP_CTX_set1_transactionID(ctx, NULL); /* ignore any error */ | |
590 | ||
591 | default: /* not closing transaction in other cases */ | |
592 | break; | |
593 | } | |
594 | return rsp; | |
595 | } | |
596 | ||
597 | /* | |
598 | * Server interface that may substitute OSSL_CMP_MSG_http_perform at the client. | |
599 | * The OSSL_CMP_SRV_CTX must be set as client_ctx->transfer_cb_arg. | |
600 | * returns received message on success, else NULL and pushes an element on the | |
601 | * error stack. | |
602 | */ | |
603 | OSSL_CMP_MSG * OSSL_CMP_CTX_server_perform(OSSL_CMP_CTX *client_ctx, | |
604 | const OSSL_CMP_MSG *req) | |
605 | { | |
606 | OSSL_CMP_SRV_CTX *srv_ctx = NULL; | |
607 | ||
608 | if (client_ctx == NULL || req == NULL) { | |
609 | CMPerr(0, CMP_R_NULL_ARGUMENT); | |
610 | return 0; | |
611 | } | |
612 | ||
613 | if ((srv_ctx = OSSL_CMP_CTX_get_transfer_cb_arg(client_ctx)) == NULL) { | |
7e765f46 | 614 | CMPerr(0, CMP_R_TRANSFER_ERROR); |
62dcd2aa DDO |
615 | return 0; |
616 | } | |
617 | ||
618 | return OSSL_CMP_SRV_process_request(srv_ctx, req); | |
619 | } |