/* * Copyright 2000-2016 The OpenSSL Project Authors. All Rights Reserved. * * Licensed under the Apache License 2.0 (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 #include "internal/cryptlib.h" #include #include #include #include "ocsp_local.h" #include #include /* Standard wrapper functions for extensions */ /* OCSP request extensions */ int OCSP_REQUEST_get_ext_count(OCSP_REQUEST *x) { return X509v3_get_ext_count(x->tbsRequest.requestExtensions); } int OCSP_REQUEST_get_ext_by_NID(OCSP_REQUEST *x, int nid, int lastpos) { return (X509v3_get_ext_by_NID (x->tbsRequest.requestExtensions, nid, lastpos)); } int OCSP_REQUEST_get_ext_by_OBJ(OCSP_REQUEST *x, const ASN1_OBJECT *obj, int lastpos) { return (X509v3_get_ext_by_OBJ (x->tbsRequest.requestExtensions, obj, lastpos)); } int OCSP_REQUEST_get_ext_by_critical(OCSP_REQUEST *x, int crit, int lastpos) { return (X509v3_get_ext_by_critical (x->tbsRequest.requestExtensions, crit, lastpos)); } X509_EXTENSION *OCSP_REQUEST_get_ext(OCSP_REQUEST *x, int loc) { return X509v3_get_ext(x->tbsRequest.requestExtensions, loc); } X509_EXTENSION *OCSP_REQUEST_delete_ext(OCSP_REQUEST *x, int loc) { return X509v3_delete_ext(x->tbsRequest.requestExtensions, loc); } void *OCSP_REQUEST_get1_ext_d2i(OCSP_REQUEST *x, int nid, int *crit, int *idx) { return X509V3_get_d2i(x->tbsRequest.requestExtensions, nid, crit, idx); } int OCSP_REQUEST_add1_ext_i2d(OCSP_REQUEST *x, int nid, void *value, int crit, unsigned long flags) { return X509V3_add1_i2d(&x->tbsRequest.requestExtensions, nid, value, crit, flags); } int OCSP_REQUEST_add_ext(OCSP_REQUEST *x, X509_EXTENSION *ex, int loc) { return (X509v3_add_ext(&(x->tbsRequest.requestExtensions), ex, loc) != NULL); } /* Single extensions */ int OCSP_ONEREQ_get_ext_count(OCSP_ONEREQ *x) { return X509v3_get_ext_count(x->singleRequestExtensions); } int OCSP_ONEREQ_get_ext_by_NID(OCSP_ONEREQ *x, int nid, int lastpos) { return X509v3_get_ext_by_NID(x->singleRequestExtensions, nid, lastpos); } int OCSP_ONEREQ_get_ext_by_OBJ(OCSP_ONEREQ *x, const ASN1_OBJECT *obj, int lastpos) { return X509v3_get_ext_by_OBJ(x->singleRequestExtensions, obj, lastpos); } int OCSP_ONEREQ_get_ext_by_critical(OCSP_ONEREQ *x, int crit, int lastpos) { return (X509v3_get_ext_by_critical (x->singleRequestExtensions, crit, lastpos)); } X509_EXTENSION *OCSP_ONEREQ_get_ext(OCSP_ONEREQ *x, int loc) { return X509v3_get_ext(x->singleRequestExtensions, loc); } X509_EXTENSION *OCSP_ONEREQ_delete_ext(OCSP_ONEREQ *x, int loc) { return X509v3_delete_ext(x->singleRequestExtensions, loc); } void *OCSP_ONEREQ_get1_ext_d2i(OCSP_ONEREQ *x, int nid, int *crit, int *idx) { return X509V3_get_d2i(x->singleRequestExtensions, nid, crit, idx); } int OCSP_ONEREQ_add1_ext_i2d(OCSP_ONEREQ *x, int nid, void *value, int crit, unsigned long flags) { return X509V3_add1_i2d(&x->singleRequestExtensions, nid, value, crit, flags); } int OCSP_ONEREQ_add_ext(OCSP_ONEREQ *x, X509_EXTENSION *ex, int loc) { return (X509v3_add_ext(&(x->singleRequestExtensions), ex, loc) != NULL); } /* OCSP Basic response */ int OCSP_BASICRESP_get_ext_count(OCSP_BASICRESP *x) { return X509v3_get_ext_count(x->tbsResponseData.responseExtensions); } int OCSP_BASICRESP_get_ext_by_NID(OCSP_BASICRESP *x, int nid, int lastpos) { return (X509v3_get_ext_by_NID (x->tbsResponseData.responseExtensions, nid, lastpos)); } int OCSP_BASICRESP_get_ext_by_OBJ(OCSP_BASICRESP *x, const ASN1_OBJECT *obj, int lastpos) { return (X509v3_get_ext_by_OBJ (x->tbsResponseData.responseExtensions, obj, lastpos)); } int OCSP_BASICRESP_get_ext_by_critical(OCSP_BASICRESP *x, int crit, int lastpos) { return (X509v3_get_ext_by_critical (x->tbsResponseData.responseExtensions, crit, lastpos)); } X509_EXTENSION *OCSP_BASICRESP_get_ext(OCSP_BASICRESP *x, int loc) { return X509v3_get_ext(x->tbsResponseData.responseExtensions, loc); } X509_EXTENSION *OCSP_BASICRESP_delete_ext(OCSP_BASICRESP *x, int loc) { return X509v3_delete_ext(x->tbsResponseData.responseExtensions, loc); } void *OCSP_BASICRESP_get1_ext_d2i(OCSP_BASICRESP *x, int nid, int *crit, int *idx) { return X509V3_get_d2i(x->tbsResponseData.responseExtensions, nid, crit, idx); } int OCSP_BASICRESP_add1_ext_i2d(OCSP_BASICRESP *x, int nid, void *value, int crit, unsigned long flags) { return X509V3_add1_i2d(&x->tbsResponseData.responseExtensions, nid, value, crit, flags); } int OCSP_BASICRESP_add_ext(OCSP_BASICRESP *x, X509_EXTENSION *ex, int loc) { return (X509v3_add_ext(&(x->tbsResponseData.responseExtensions), ex, loc) != NULL); } /* OCSP single response extensions */ int OCSP_SINGLERESP_get_ext_count(OCSP_SINGLERESP *x) { return X509v3_get_ext_count(x->singleExtensions); } int OCSP_SINGLERESP_get_ext_by_NID(OCSP_SINGLERESP *x, int nid, int lastpos) { return X509v3_get_ext_by_NID(x->singleExtensions, nid, lastpos); } int OCSP_SINGLERESP_get_ext_by_OBJ(OCSP_SINGLERESP *x, const ASN1_OBJECT *obj, int lastpos) { return X509v3_get_ext_by_OBJ(x->singleExtensions, obj, lastpos); } int OCSP_SINGLERESP_get_ext_by_critical(OCSP_SINGLERESP *x, int crit, int lastpos) { return X509v3_get_ext_by_critical(x->singleExtensions, crit, lastpos); } X509_EXTENSION *OCSP_SINGLERESP_get_ext(OCSP_SINGLERESP *x, int loc) { return X509v3_get_ext(x->singleExtensions, loc); } X509_EXTENSION *OCSP_SINGLERESP_delete_ext(OCSP_SINGLERESP *x, int loc) { return X509v3_delete_ext(x->singleExtensions, loc); } void *OCSP_SINGLERESP_get1_ext_d2i(OCSP_SINGLERESP *x, int nid, int *crit, int *idx) { return X509V3_get_d2i(x->singleExtensions, nid, crit, idx); } int OCSP_SINGLERESP_add1_ext_i2d(OCSP_SINGLERESP *x, int nid, void *value, int crit, unsigned long flags) { return X509V3_add1_i2d(&x->singleExtensions, nid, value, crit, flags); } int OCSP_SINGLERESP_add_ext(OCSP_SINGLERESP *x, X509_EXTENSION *ex, int loc) { return (X509v3_add_ext(&(x->singleExtensions), ex, loc) != NULL); } /* also CRL Entry Extensions */ /* Nonce handling functions */ /* * Add a nonce to an extension stack. A nonce can be specified or if NULL a * random nonce will be generated. Note: OpenSSL 0.9.7d and later create an * OCTET STRING containing the nonce, previous versions used the raw nonce. */ static int ocsp_add1_nonce(STACK_OF(X509_EXTENSION) **exts, unsigned char *val, int len) { unsigned char *tmpval; ASN1_OCTET_STRING os; int ret = 0; if (len <= 0) len = OCSP_DEFAULT_NONCE_LENGTH; /* * Create the OCTET STRING manually by writing out the header and * appending the content octets. This avoids an extra memory allocation * operation in some cases. Applications should *NOT* do this because it * relies on library internals. */ os.length = ASN1_object_size(0, len, V_ASN1_OCTET_STRING); if (os.length < 0) return 0; os.data = OPENSSL_malloc(os.length); if (os.data == NULL) goto err; tmpval = os.data; ASN1_put_object(&tmpval, 0, len, V_ASN1_OCTET_STRING, V_ASN1_UNIVERSAL); if (val) memcpy(tmpval, val, len); else if (RAND_bytes(tmpval, len) <= 0) goto err; if (!X509V3_add1_i2d(exts, NID_id_pkix_OCSP_Nonce, &os, 0, X509V3_ADD_REPLACE)) goto err; ret = 1; err: OPENSSL_free(os.data); return ret; } /* Add nonce to an OCSP request */ int OCSP_request_add1_nonce(OCSP_REQUEST *req, unsigned char *val, int len) { return ocsp_add1_nonce(&req->tbsRequest.requestExtensions, val, len); } /* Same as above but for a response */ int OCSP_basic_add1_nonce(OCSP_BASICRESP *resp, unsigned char *val, int len) { return ocsp_add1_nonce(&resp->tbsResponseData.responseExtensions, val, len); } /*- * Check nonce validity in a request and response. * Return value reflects result: * 1: nonces present and equal. * 2: nonces both absent. * 3: nonce present in response only. * 0: nonces both present and not equal. * -1: nonce in request only. * * For most responders clients can check return > 0. * If responder doesn't handle nonces return != 0 may be * necessary. return == 0 is always an error. */ int OCSP_check_nonce(OCSP_REQUEST *req, OCSP_BASICRESP *bs) { /* * Since we are only interested in the presence or absence of * the nonce and comparing its value there is no need to use * the X509V3 routines: this way we can avoid them allocating an * ASN1_OCTET_STRING structure for the value which would be * freed immediately anyway. */ int req_idx, resp_idx; X509_EXTENSION *req_ext, *resp_ext; req_idx = OCSP_REQUEST_get_ext_by_NID(req, NID_id_pkix_OCSP_Nonce, -1); resp_idx = OCSP_BASICRESP_get_ext_by_NID(bs, NID_id_pkix_OCSP_Nonce, -1); /* Check both absent */ if ((req_idx < 0) && (resp_idx < 0)) return 2; /* Check in request only */ if ((req_idx >= 0) && (resp_idx < 0)) return -1; /* Check in response but not request */ if ((req_idx < 0) && (resp_idx >= 0)) return 3; /* * Otherwise nonce in request and response so retrieve the extensions */ req_ext = OCSP_REQUEST_get_ext(req, req_idx); resp_ext = OCSP_BASICRESP_get_ext(bs, resp_idx); if (ASN1_OCTET_STRING_cmp(X509_EXTENSION_get_data(req_ext), X509_EXTENSION_get_data(resp_ext))) return 0; return 1; } /* * Copy the nonce value (if any) from an OCSP request to a response. */ int OCSP_copy_nonce(OCSP_BASICRESP *resp, OCSP_REQUEST *req) { X509_EXTENSION *req_ext; int req_idx; /* Check for nonce in request */ req_idx = OCSP_REQUEST_get_ext_by_NID(req, NID_id_pkix_OCSP_Nonce, -1); /* If no nonce that's OK */ if (req_idx < 0) return 2; req_ext = OCSP_REQUEST_get_ext(req, req_idx); return OCSP_BASICRESP_add_ext(resp, req_ext, -1); } X509_EXTENSION *OCSP_crlID_new(const char *url, long *n, char *tim) { X509_EXTENSION *x = NULL; OCSP_CRLID *cid = NULL; if ((cid = OCSP_CRLID_new()) == NULL) goto err; if (url) { if ((cid->crlUrl = ASN1_IA5STRING_new()) == NULL) goto err; if (!(ASN1_STRING_set(cid->crlUrl, url, -1))) goto err; } if (n) { if ((cid->crlNum = ASN1_INTEGER_new()) == NULL) goto err; if (!(ASN1_INTEGER_set(cid->crlNum, *n))) goto err; } if (tim) { if ((cid->crlTime = ASN1_GENERALIZEDTIME_new()) == NULL) goto err; if (!(ASN1_GENERALIZEDTIME_set_string(cid->crlTime, tim))) goto err; } x = X509V3_EXT_i2d(NID_id_pkix_OCSP_CrlID, 0, cid); err: OCSP_CRLID_free(cid); return x; } /* AcceptableResponses ::= SEQUENCE OF OBJECT IDENTIFIER */ X509_EXTENSION *OCSP_accept_responses_new(char **oids) { int nid; STACK_OF(ASN1_OBJECT) *sk = NULL; ASN1_OBJECT *o = NULL; X509_EXTENSION *x = NULL; if ((sk = sk_ASN1_OBJECT_new_null()) == NULL) goto err; while (oids && *oids) { if ((nid = OBJ_txt2nid(*oids)) != NID_undef && (o = OBJ_nid2obj(nid))) sk_ASN1_OBJECT_push(sk, o); oids++; } x = X509V3_EXT_i2d(NID_id_pkix_OCSP_acceptableResponses, 0, sk); err: sk_ASN1_OBJECT_pop_free(sk, ASN1_OBJECT_free); return x; } /* ArchiveCutoff ::= GeneralizedTime */ X509_EXTENSION *OCSP_archive_cutoff_new(char *tim) { X509_EXTENSION *x = NULL; ASN1_GENERALIZEDTIME *gt = NULL; if ((gt = ASN1_GENERALIZEDTIME_new()) == NULL) goto err; if (!(ASN1_GENERALIZEDTIME_set_string(gt, tim))) goto err; x = X509V3_EXT_i2d(NID_id_pkix_OCSP_archiveCutoff, 0, gt); err: ASN1_GENERALIZEDTIME_free(gt); return x; } /* * per ACCESS_DESCRIPTION parameter are oids, of which there are currently * two--NID_ad_ocsp, NID_id_ad_caIssuers--and GeneralName value. This method * forces NID_ad_ocsp and uniformResourceLocator [6] IA5String. */ X509_EXTENSION *OCSP_url_svcloc_new(X509_NAME *issuer, const char **urls) { X509_EXTENSION *x = NULL; ASN1_IA5STRING *ia5 = NULL; OCSP_SERVICELOC *sloc = NULL; ACCESS_DESCRIPTION *ad = NULL; if ((sloc = OCSP_SERVICELOC_new()) == NULL) goto err; X509_NAME_free(sloc->issuer); if ((sloc->issuer = X509_NAME_dup(issuer)) == NULL) goto err; if (urls && *urls && (sloc->locator = sk_ACCESS_DESCRIPTION_new_null()) == NULL) goto err; while (urls && *urls) { if ((ad = ACCESS_DESCRIPTION_new()) == NULL) goto err; if ((ad->method = OBJ_nid2obj(NID_ad_OCSP)) == NULL) goto err; if ((ia5 = ASN1_IA5STRING_new()) == NULL) goto err; if (!ASN1_STRING_set((ASN1_STRING *)ia5, *urls, -1)) goto err; /* ad->location is allocated inside ACCESS_DESCRIPTION_new */ ad->location->type = GEN_URI; ad->location->d.ia5 = ia5; ia5 = NULL; if (!sk_ACCESS_DESCRIPTION_push(sloc->locator, ad)) goto err; ad = NULL; urls++; } x = X509V3_EXT_i2d(NID_id_pkix_OCSP_serviceLocator, 0, sloc); err: ASN1_IA5STRING_free(ia5); ACCESS_DESCRIPTION_free(ad); OCSP_SERVICELOC_free(sloc); return x; }