diff options
Diffstat (limited to 'openssl-1.1.0h/crypto/ocsp/ocsp_cl.c')
| -rw-r--r-- | openssl-1.1.0h/crypto/ocsp/ocsp_cl.c | 365 |
1 files changed, 365 insertions, 0 deletions
diff --git a/openssl-1.1.0h/crypto/ocsp/ocsp_cl.c b/openssl-1.1.0h/crypto/ocsp/ocsp_cl.c new file mode 100644 index 0000000..a42b80f --- /dev/null +++ b/openssl-1.1.0h/crypto/ocsp/ocsp_cl.c @@ -0,0 +1,365 @@ +/* + * Copyright 2001-2016 The OpenSSL Project Authors. All Rights Reserved. + * + * Licensed under the OpenSSL license (the "License"). You may not use + * this file except in compliance with the License. You can obtain a copy + * in the file LICENSE in the source distribution or at + * https://www.openssl.org/source/license.html + */ + +#include <stdio.h> +#include <time.h> +#include "internal/cryptlib.h" +#include <openssl/objects.h> +#include <openssl/x509.h> +#include <openssl/pem.h> +#include <openssl/x509v3.h> +#include <openssl/ocsp.h> +#include "ocsp_lcl.h" + +/* + * Utility functions related to sending OCSP requests and extracting relevant + * information from the response. + */ + +/* + * Add an OCSP_CERTID to an OCSP request. Return new OCSP_ONEREQ pointer: + * useful if we want to add extensions. + */ + +OCSP_ONEREQ *OCSP_request_add0_id(OCSP_REQUEST *req, OCSP_CERTID *cid) +{ + OCSP_ONEREQ *one = NULL; + + if ((one = OCSP_ONEREQ_new()) == NULL) + return NULL; + OCSP_CERTID_free(one->reqCert); + one->reqCert = cid; + if (req && !sk_OCSP_ONEREQ_push(req->tbsRequest.requestList, one)) { + one->reqCert = NULL; /* do not free on error */ + goto err; + } + return one; + err: + OCSP_ONEREQ_free(one); + return NULL; +} + +/* Set requestorName from an X509_NAME structure */ + +int OCSP_request_set1_name(OCSP_REQUEST *req, X509_NAME *nm) +{ + GENERAL_NAME *gen; + + gen = GENERAL_NAME_new(); + if (gen == NULL) + return 0; + if (!X509_NAME_set(&gen->d.directoryName, nm)) { + GENERAL_NAME_free(gen); + return 0; + } + gen->type = GEN_DIRNAME; + GENERAL_NAME_free(req->tbsRequest.requestorName); + req->tbsRequest.requestorName = gen; + return 1; +} + +/* Add a certificate to an OCSP request */ + +int OCSP_request_add1_cert(OCSP_REQUEST *req, X509 *cert) +{ + OCSP_SIGNATURE *sig; + if (req->optionalSignature == NULL) + req->optionalSignature = OCSP_SIGNATURE_new(); + sig = req->optionalSignature; + if (sig == NULL) + return 0; + if (cert == NULL) + return 1; + if (sig->certs == NULL + && (sig->certs = sk_X509_new_null()) == NULL) + return 0; + + if (!sk_X509_push(sig->certs, cert)) + return 0; + X509_up_ref(cert); + return 1; +} + +/* + * Sign an OCSP request set the requestorName to the subject name of an + * optional signers certificate and include one or more optional certificates + * in the request. Behaves like PKCS7_sign(). + */ + +int OCSP_request_sign(OCSP_REQUEST *req, + X509 *signer, + EVP_PKEY *key, + const EVP_MD *dgst, + STACK_OF(X509) *certs, unsigned long flags) +{ + int i; + X509 *x; + + if (!OCSP_request_set1_name(req, X509_get_subject_name(signer))) + goto err; + + if ((req->optionalSignature = OCSP_SIGNATURE_new()) == NULL) + goto err; + if (key) { + if (!X509_check_private_key(signer, key)) { + OCSPerr(OCSP_F_OCSP_REQUEST_SIGN, + OCSP_R_PRIVATE_KEY_DOES_NOT_MATCH_CERTIFICATE); + goto err; + } + if (!OCSP_REQUEST_sign(req, key, dgst)) + goto err; + } + + if (!(flags & OCSP_NOCERTS)) { + if (!OCSP_request_add1_cert(req, signer)) + goto err; + for (i = 0; i < sk_X509_num(certs); i++) { + x = sk_X509_value(certs, i); + if (!OCSP_request_add1_cert(req, x)) + goto err; + } + } + + return 1; + err: + OCSP_SIGNATURE_free(req->optionalSignature); + req->optionalSignature = NULL; + return 0; +} + +/* Get response status */ + +int OCSP_response_status(OCSP_RESPONSE *resp) +{ + return ASN1_ENUMERATED_get(resp->responseStatus); +} + +/* + * Extract basic response from OCSP_RESPONSE or NULL if no basic response + * present. + */ + +OCSP_BASICRESP *OCSP_response_get1_basic(OCSP_RESPONSE *resp) +{ + OCSP_RESPBYTES *rb; + rb = resp->responseBytes; + if (!rb) { + OCSPerr(OCSP_F_OCSP_RESPONSE_GET1_BASIC, OCSP_R_NO_RESPONSE_DATA); + return NULL; + } + if (OBJ_obj2nid(rb->responseType) != NID_id_pkix_OCSP_basic) { + OCSPerr(OCSP_F_OCSP_RESPONSE_GET1_BASIC, OCSP_R_NOT_BASIC_RESPONSE); + return NULL; + } + + return ASN1_item_unpack(rb->response, ASN1_ITEM_rptr(OCSP_BASICRESP)); +} + +const ASN1_OCTET_STRING *OCSP_resp_get0_signature(const OCSP_BASICRESP *bs) +{ + return bs->signature; +} + +/* + * Return number of OCSP_SINGLERESP responses present in a basic response. + */ + +int OCSP_resp_count(OCSP_BASICRESP *bs) +{ + if (!bs) + return -1; + return sk_OCSP_SINGLERESP_num(bs->tbsResponseData.responses); +} + +/* Extract an OCSP_SINGLERESP response with a given index */ + +OCSP_SINGLERESP *OCSP_resp_get0(OCSP_BASICRESP *bs, int idx) +{ + if (!bs) + return NULL; + return sk_OCSP_SINGLERESP_value(bs->tbsResponseData.responses, idx); +} + +const ASN1_GENERALIZEDTIME *OCSP_resp_get0_produced_at(const OCSP_BASICRESP* bs) +{ + return bs->tbsResponseData.producedAt; +} + +const STACK_OF(X509) *OCSP_resp_get0_certs(const OCSP_BASICRESP *bs) +{ + return bs->certs; +} + +int OCSP_resp_get0_id(const OCSP_BASICRESP *bs, + const ASN1_OCTET_STRING **pid, + const X509_NAME **pname) + +{ + const OCSP_RESPID *rid = &bs->tbsResponseData.responderId; + if (rid->type == V_OCSP_RESPID_NAME) { + *pname = rid->value.byName; + *pid = NULL; + } else if (rid->type == V_OCSP_RESPID_KEY) { + *pid = rid->value.byKey; + *pname = NULL; + } else { + return 0; + } + return 1; +} + +/* Look single response matching a given certificate ID */ + +int OCSP_resp_find(OCSP_BASICRESP *bs, OCSP_CERTID *id, int last) +{ + int i; + STACK_OF(OCSP_SINGLERESP) *sresp; + OCSP_SINGLERESP *single; + if (!bs) + return -1; + if (last < 0) + last = 0; + else + last++; + sresp = bs->tbsResponseData.responses; + for (i = last; i < sk_OCSP_SINGLERESP_num(sresp); i++) { + single = sk_OCSP_SINGLERESP_value(sresp, i); + if (!OCSP_id_cmp(id, single->certId)) + return i; + } + return -1; +} + +/* + * Extract status information from an OCSP_SINGLERESP structure. Note: the + * revtime and reason values are only set if the certificate status is + * revoked. Returns numerical value of status. + */ + +int OCSP_single_get0_status(OCSP_SINGLERESP *single, int *reason, + ASN1_GENERALIZEDTIME **revtime, + ASN1_GENERALIZEDTIME **thisupd, + ASN1_GENERALIZEDTIME **nextupd) +{ + int ret; + OCSP_CERTSTATUS *cst; + if (!single) + return -1; + cst = single->certStatus; + ret = cst->type; + if (ret == V_OCSP_CERTSTATUS_REVOKED) { + OCSP_REVOKEDINFO *rev = cst->value.revoked; + if (revtime) + *revtime = rev->revocationTime; + if (reason) { + if (rev->revocationReason) + *reason = ASN1_ENUMERATED_get(rev->revocationReason); + else + *reason = -1; + } + } + if (thisupd) + *thisupd = single->thisUpdate; + if (nextupd) + *nextupd = single->nextUpdate; + return ret; +} + +/* + * This function combines the previous ones: look up a certificate ID and if + * found extract status information. Return 0 is successful. + */ + +int OCSP_resp_find_status(OCSP_BASICRESP *bs, OCSP_CERTID *id, int *status, + int *reason, + ASN1_GENERALIZEDTIME **revtime, + ASN1_GENERALIZEDTIME **thisupd, + ASN1_GENERALIZEDTIME **nextupd) +{ + int i; + OCSP_SINGLERESP *single; + i = OCSP_resp_find(bs, id, -1); + /* Maybe check for multiple responses and give an error? */ + if (i < 0) + return 0; + single = OCSP_resp_get0(bs, i); + i = OCSP_single_get0_status(single, reason, revtime, thisupd, nextupd); + if (status) + *status = i; + return 1; +} + +/* + * Check validity of thisUpdate and nextUpdate fields. It is possible that + * the request will take a few seconds to process and/or the time won't be + * totally accurate. Therefore to avoid rejecting otherwise valid time we + * allow the times to be within 'nsec' of the current time. Also to avoid + * accepting very old responses without a nextUpdate field an optional maxage + * parameter specifies the maximum age the thisUpdate field can be. + */ + +int OCSP_check_validity(ASN1_GENERALIZEDTIME *thisupd, + ASN1_GENERALIZEDTIME *nextupd, long nsec, long maxsec) +{ + int ret = 1; + time_t t_now, t_tmp; + time(&t_now); + /* Check thisUpdate is valid and not more than nsec in the future */ + if (!ASN1_GENERALIZEDTIME_check(thisupd)) { + OCSPerr(OCSP_F_OCSP_CHECK_VALIDITY, OCSP_R_ERROR_IN_THISUPDATE_FIELD); + ret = 0; + } else { + t_tmp = t_now + nsec; + if (X509_cmp_time(thisupd, &t_tmp) > 0) { + OCSPerr(OCSP_F_OCSP_CHECK_VALIDITY, OCSP_R_STATUS_NOT_YET_VALID); + ret = 0; + } + + /* + * If maxsec specified check thisUpdate is not more than maxsec in + * the past + */ + if (maxsec >= 0) { + t_tmp = t_now - maxsec; + if (X509_cmp_time(thisupd, &t_tmp) < 0) { + OCSPerr(OCSP_F_OCSP_CHECK_VALIDITY, OCSP_R_STATUS_TOO_OLD); + ret = 0; + } + } + } + + if (!nextupd) + return ret; + + /* Check nextUpdate is valid and not more than nsec in the past */ + if (!ASN1_GENERALIZEDTIME_check(nextupd)) { + OCSPerr(OCSP_F_OCSP_CHECK_VALIDITY, OCSP_R_ERROR_IN_NEXTUPDATE_FIELD); + ret = 0; + } else { + t_tmp = t_now - nsec; + if (X509_cmp_time(nextupd, &t_tmp) < 0) { + OCSPerr(OCSP_F_OCSP_CHECK_VALIDITY, OCSP_R_STATUS_EXPIRED); + ret = 0; + } + } + + /* Also don't allow nextUpdate to precede thisUpdate */ + if (ASN1_STRING_cmp(nextupd, thisupd) < 0) { + OCSPerr(OCSP_F_OCSP_CHECK_VALIDITY, + OCSP_R_NEXTUPDATE_BEFORE_THISUPDATE); + ret = 0; + } + + return ret; +} + +const OCSP_CERTID *OCSP_SINGLERESP_get0_id(const OCSP_SINGLERESP *single) +{ + return single->certId; +} |