/* ocsp.c */ /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL * project 2000. */ /* ==================================================================== * Copyright (c) 1999 The OpenSSL Project. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * * 3. All advertising materials mentioning features or use of this * software must display the following acknowledgment: * "This product includes software developed by the OpenSSL Project * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" * * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to * endorse or promote products derived from this software without * prior written permission. For written permission, please contact * licensing@OpenSSL.org. * * 5. Products derived from this software may not be called "OpenSSL" * nor may "OpenSSL" appear in their names without prior written * permission of the OpenSSL Project. * * 6. Redistributions of any form whatsoever must retain the following * acknowledgment: * "This product includes software developed by the OpenSSL Project * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" * * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. * ==================================================================== * * This product includes cryptographic software written by Eric Young * (eay@cryptsoft.com). This product includes software written by Tim * Hudson (tjh@cryptsoft.com). * */ #ifndef OPENSSL_NO_OCSP #ifdef OPENSSL_SYS_VMS #define _XOPEN_SOURCE_EXTENDED /* So fd_set and friends get properly defined on OpenVMS */ #endif #define USE_SOCKETS #include <stdio.h> #include <stdlib.h> #include <string.h> #include <time.h> #include "apps.h" /* needs to be included before the openssl headers! */ #include <openssl/e_os2.h> #include <openssl/crypto.h> #include <openssl/err.h> #include <openssl/ssl.h> #include <openssl/evp.h> #include <openssl/bn.h> #include <openssl/x509v3.h> #if defined(NETWARE_CLIB) # ifdef NETWARE_BSDSOCK # include <sys/socket.h> # include <sys/bsdskt.h> # else # include <novsock2.h> # endif #elif defined(NETWARE_LIBC) # ifdef NETWARE_BSDSOCK # include <sys/select.h> # else # include <novsock2.h> # endif #endif /* Maximum leeway in validity period: default 5 minutes */ #define MAX_VALIDITY_PERIOD (5 * 60) static int add_ocsp_cert(OCSP_REQUEST **req, X509 *cert, const EVP_MD *cert_id_md, X509 *issuer, STACK_OF(OCSP_CERTID) *ids); static int add_ocsp_serial(OCSP_REQUEST **req, char *serial, const EVP_MD * cert_id_md, X509 *issuer, STACK_OF(OCSP_CERTID) *ids); static int print_ocsp_summary(BIO *out, OCSP_BASICRESP *bs, OCSP_REQUEST *req, STACK_OF(OPENSSL_STRING) *names, STACK_OF(OCSP_CERTID) *ids, long nsec, long maxage); static int make_ocsp_response(OCSP_RESPONSE **resp, OCSP_REQUEST *req, CA_DB *db, X509 *ca, X509 *rcert, EVP_PKEY *rkey, STACK_OF(X509) *rother, unsigned long flags, int nmin, int ndays); static char **lookup_serial(CA_DB *db, ASN1_INTEGER *ser); static BIO *init_responder(char *port); static int do_responder(OCSP_REQUEST **preq, BIO **pcbio, BIO *acbio, char *port); static int send_ocsp_response(BIO *cbio, OCSP_RESPONSE *resp); static OCSP_RESPONSE *query_responder(BIO *err, BIO *cbio, char *path, STACK_OF(CONF_VALUE) *headers, OCSP_REQUEST *req, int req_timeout); #undef PROG #define PROG ocsp_main int MAIN(int, char **); int MAIN(int argc, char **argv) { ENGINE *e = NULL; char **args; char *host = NULL, *port = NULL, *path = "/"; char *reqin = NULL, *respin = NULL; char *reqout = NULL, *respout = NULL; char *signfile = NULL, *keyfile = NULL; char *rsignfile = NULL, *rkeyfile = NULL; char *outfile = NULL; int add_nonce = 1, noverify = 0, use_ssl = -1; STACK_OF(CONF_VALUE) *headers = NULL; OCSP_REQUEST *req = NULL; OCSP_RESPONSE *resp = NULL; OCSP_BASICRESP *bs = NULL; X509 *issuer = NULL, *cert = NULL; X509 *signer = NULL, *rsigner = NULL; EVP_PKEY *key = NULL, *rkey = NULL; BIO *acbio = NULL, *cbio = NULL; BIO *derbio = NULL; BIO *out = NULL; int req_timeout = -1; int req_text = 0, resp_text = 0; long nsec = MAX_VALIDITY_PERIOD, maxage = -1; char *CAfile = NULL, *CApath = NULL; X509_STORE *store = NULL; STACK_OF(X509) *sign_other = NULL, *verify_other = NULL, *rother = NULL; char *sign_certfile = NULL, *verify_certfile = NULL, *rcertfile = NULL; unsigned long sign_flags = 0, verify_flags = 0, rflags = 0; int ret = 1; int accept_count = -1; int badarg = 0; int i; int ignore_err = 0; STACK_OF(OPENSSL_STRING) *reqnames = NULL; STACK_OF(OCSP_CERTID) *ids = NULL; X509 *rca_cert = NULL; char *ridx_filename = NULL; char *rca_filename = NULL; CA_DB *rdb = NULL; int nmin = 0, ndays = -1; const EVP_MD *cert_id_md = NULL; if (bio_err == NULL) bio_err = BIO_new_fp(stderr, BIO_NOCLOSE); if (!load_config(bio_err, NULL)) goto end; SSL_load_error_strings(); OpenSSL_add_ssl_algorithms(); args = argv + 1; reqnames = sk_OPENSSL_STRING_new_null(); ids = sk_OCSP_CERTID_new_null(); while (!badarg && *args && *args[0] == '-') { if (!strcmp(*args, "-out")) { if (args[1]) { args++; outfile = *args; } else badarg = 1; } else if (!strcmp(*args, "-timeout")) { if (args[1]) { args++; req_timeout = atol(*args); if (req_timeout < 0) { BIO_printf(bio_err, "Illegal timeout value %s\n", *args); badarg = 1; } } else badarg = 1; } else if (!strcmp(*args, "-url")) { if (args[1]) { args++; if (!OCSP_parse_url(*args, &host, &port, &path, &use_ssl)) { BIO_printf(bio_err, "Error parsing URL\n"); badarg = 1; } } else badarg = 1; } else if (!strcmp(*args, "-host")) { if (args[1]) { args++; host = *args; } else badarg = 1; } else if (!strcmp(*args, "-port")) { if (args[1]) { args++; port = *args; } else badarg = 1; } else if (!strcmp(*args, "-header")) { if (args[1] && args[2]) { if (!X509V3_add_value(args[1], args[2], &headers)) goto end; args += 2; } else badarg = 1; } else if (!strcmp(*args, "-ignore_err")) ignore_err = 1; else if (!strcmp(*args, "-noverify")) noverify = 1; else if (!strcmp(*args, "-nonce")) add_nonce = 2; else if (!strcmp(*args, "-no_nonce")) add_nonce = 0; else if (!strcmp(*args, "-resp_no_certs")) rflags |= OCSP_NOCERTS; else if (!strcmp(*args, "-resp_key_id")) rflags |= OCSP_RESPID_KEY; else if (!strcmp(*args, "-no_certs")) sign_flags |= OCSP_NOCERTS; else if (!strcmp(*args, "-no_signature_verify")) verify_flags |= OCSP_NOSIGS; else if (!strcmp(*args, "-no_cert_verify")) verify_flags |= OCSP_NOVERIFY; else if (!strcmp(*args, "-no_chain")) verify_flags |= OCSP_NOCHAIN; else if (!strcmp(*args, "-no_cert_checks")) verify_flags |= OCSP_NOCHECKS; else if (!strcmp(*args, "-no_explicit")) verify_flags |= OCSP_NOEXPLICIT; else if (!strcmp(*args, "-trust_other")) verify_flags |= OCSP_TRUSTOTHER; else if (!strcmp(*args, "-no_intern")) verify_flags |= OCSP_NOINTERN; else if (!strcmp(*args, "-text")) { req_text = 1; resp_text = 1; } else if (!strcmp(*args, "-req_text")) req_text = 1; else if (!strcmp(*args, "-resp_text")) resp_text = 1; else if (!strcmp(*args, "-reqin")) { if (args[1]) { args++; reqin = *args; } else badarg = 1; } else if (!strcmp(*args, "-respin")) { if (args[1]) { args++; respin = *args; } else badarg = 1; } else if (!strcmp(*args, "-signer")) { if (args[1]) { args++; signfile = *args; } else badarg = 1; } else if (!strcmp (*args, "-VAfile")) { if (args[1]) { args++; verify_certfile = *args; verify_flags |= OCSP_TRUSTOTHER; } else badarg = 1; } else if (!strcmp(*args, "-sign_other")) { if (args[1]) { args++; sign_certfile = *args; } else badarg = 1; } else if (!strcmp(*args, "-verify_other")) { if (args[1]) { args++; verify_certfile = *args; } else badarg = 1; } else if (!strcmp (*args, "-CAfile")) { if (args[1]) { args++; CAfile = *args; } else badarg = 1; } else if (!strcmp (*args, "-CApath")) { if (args[1]) { args++; CApath = *args; } else badarg = 1; } else if (!strcmp (*args, "-validity_period")) { if (args[1]) { args++; nsec = atol(*args); if (nsec < 0) { BIO_printf(bio_err, "Illegal validity period %s\n", *args); badarg = 1; } } else badarg = 1; } else if (!strcmp (*args, "-status_age")) { if (args[1]) { args++; maxage = atol(*args); if (maxage < 0) { BIO_printf(bio_err, "Illegal validity age %s\n", *args); badarg = 1; } } else badarg = 1; } else if (!strcmp(*args, "-signkey")) { if (args[1]) { args++; keyfile = *args; } else badarg = 1; } else if (!strcmp(*args, "-reqout")) { if (args[1]) { args++; reqout = *args; } else badarg = 1; } else if (!strcmp(*args, "-respout")) { if (args[1]) { args++; respout = *args; } else badarg = 1; } else if (!strcmp(*args, "-path")) { if (args[1]) { args++; path = *args; } else badarg = 1; } else if (!strcmp(*args, "-issuer")) { if (args[1]) { args++; X509_free(issuer); issuer = load_cert(bio_err, *args, FORMAT_PEM, NULL, e, "issuer certificate"); if(!issuer) goto end; } else badarg = 1; } else if (!strcmp (*args, "-cert")) { if (args[1]) { args++; X509_free(cert); cert = load_cert(bio_err, *args, FORMAT_PEM, NULL, e, "certificate"); if(!cert) goto end; if (!cert_id_md) cert_id_md = EVP_sha1(); if(!add_ocsp_cert(&req, cert, cert_id_md, issuer, ids)) goto end; if(!sk_OPENSSL_STRING_push(reqnames, *args)) goto end; } else badarg = 1; } else if (!strcmp(*args, "-serial")) { if (args[1]) { args++; if (!cert_id_md) cert_id_md = EVP_sha1(); if(!add_ocsp_serial(&req, *args, cert_id_md, issuer, ids)) goto end; if(!sk_OPENSSL_STRING_push(reqnames, *args)) goto end; } else badarg = 1; } else if (!strcmp(*args, "-index")) { if (args[1]) { args++; ridx_filename = *args; } else badarg = 1; } else if (!strcmp(*args, "-CA")) { if (args[1]) { args++; rca_filename = *args; } else badarg = 1; } else if (!strcmp (*args, "-nmin")) { if (args[1]) { args++; nmin = atol(*args); if (nmin < 0) { BIO_printf(bio_err, "Illegal update period %s\n", *args); badarg = 1; } } if (ndays == -1) ndays = 0; else badarg = 1; } else if (!strcmp (*args, "-nrequest")) { if (args[1]) { args++; accept_count = atol(*args); if (accept_count < 0) { BIO_printf(bio_err, "Illegal accept count %s\n", *args); badarg = 1; } } else badarg = 1; } else if (!strcmp (*args, "-ndays")) { if (args[1]) { args++; ndays = atol(*args); if (ndays < 0) { BIO_printf(bio_err, "Illegal update period %s\n", *args); badarg = 1; } } else badarg = 1; } else if (!strcmp(*args, "-rsigner")) { if (args[1]) { args++; rsignfile = *args; } else badarg = 1; } else if (!strcmp(*args, "-rkey")) { if (args[1]) { args++; rkeyfile = *args; } else badarg = 1; } else if (!strcmp(*args, "-rother")) { if (args[1]) { args++; rcertfile = *args; } else badarg = 1; } else if ((cert_id_md = EVP_get_digestbyname((*args)+1))==NULL) { badarg = 1; } args++; } /* Have we anything to do? */ if (!req && !reqin && !respin && !(port && ridx_filename)) badarg = 1; if (badarg) { BIO_printf (bio_err, "OCSP utility\n"); BIO_printf (bio_err, "Usage ocsp [options]\n"); BIO_printf (bio_err, "where options are\n"); BIO_printf (bio_err, "-out file output filename\n"); BIO_printf (bio_err, "-issuer file issuer certificate\n"); BIO_printf (bio_err, "-cert file certificate to check\n"); BIO_printf (bio_err, "-serial n serial number to check\n"); BIO_printf (bio_err, "-signer file certificate to sign OCSP request with\n"); BIO_printf (bio_err, "-signkey file private key to sign OCSP request with\n"); BIO_printf (bio_err, "-sign_other file additional certificates to include in signed request\n"); BIO_printf (bio_err, "-no_certs don't include any certificates in signed request\n"); BIO_printf (bio_err, "-req_text print text form of request\n"); BIO_printf (bio_err, "-resp_text print text form of response\n"); BIO_printf (bio_err, "-text print text form of request and response\n"); BIO_printf (bio_err, "-reqout file write DER encoded OCSP request to \"file\"\n"); BIO_printf (bio_err, "-respout file write DER encoded OCSP reponse to \"file\"\n"); BIO_printf (bio_err, "-reqin file read DER encoded OCSP request from \"file\"\n"); BIO_printf (bio_err, "-respin file read DER encoded OCSP reponse from \"file\"\n"); BIO_printf (bio_err, "-nonce add OCSP nonce to request\n"); BIO_printf (bio_err, "-no_nonce don't add OCSP nonce to request\n"); BIO_printf (bio_err, "-url URL OCSP responder URL\n"); BIO_printf (bio_err, "-host host:n send OCSP request to host on port n\n"); BIO_printf (bio_err, "-path path to use in OCSP request\n"); BIO_printf (bio_err, "-CApath dir trusted certificates directory\n"); BIO_printf (bio_err, "-CAfile file trusted certificates file\n"); BIO_printf (bio_err, "-VAfile file validator certificates file\n"); BIO_printf (bio_err, "-validity_period n maximum validity discrepancy in seconds\n"); BIO_printf (bio_err, "-status_age n maximum status age in seconds\n"); BIO_printf (bio_err, "-noverify don't verify response at all\n"); BIO_printf (bio_err, "-verify_other file additional certificates to search for signer\n"); BIO_printf (bio_err, "-trust_other don't verify additional certificates\n"); BIO_printf (bio_err, "-no_intern don't search certificates contained in response for signer\n"); BIO_printf (bio_err, "-no_signature_verify don't check signature on response\n"); BIO_printf (bio_err, "-no_cert_verify don't check signing certificate\n"); BIO_printf (bio_err, "-no_chain don't chain verify response\n"); BIO_printf (bio_err, "-no_cert_checks don't do additional checks on signing certificate\n"); BIO_printf (bio_err, "-port num port to run responder on\n"); BIO_printf (bio_err, "-index file certificate status index file\n"); BIO_printf (bio_err, "-CA file CA certificate\n"); BIO_printf (bio_err, "-rsigner file responder certificate to sign responses with\n"); BIO_printf (bio_err, "-rkey file responder key to sign responses with\n"); BIO_printf (bio_err, "-rother file other certificates to include in response\n"); BIO_printf (bio_err, "-resp_no_certs don't include any certificates in response\n"); BIO_printf (bio_err, "-nmin n number of minutes before next update\n"); BIO_printf (bio_err, "-ndays n number of days before next update\n"); BIO_printf (bio_err, "-resp_key_id identify reponse by signing certificate key ID\n"); BIO_printf (bio_err, "-nrequest n number of requests to accept (default unlimited)\n"); BIO_printf (bio_err, "-<dgst alg> use specified digest in the request\n"); goto end; } if(outfile) out = BIO_new_file(outfile, "w"); else out = BIO_new_fp(stdout, BIO_NOCLOSE); if(!out) { BIO_printf(bio_err, "Error opening output file\n"); goto end; } if (!req && (add_nonce != 2)) add_nonce = 0; if (!req && reqin) { derbio = BIO_new_file(reqin, "rb"); if (!derbio) { BIO_printf(bio_err, "Error Opening OCSP request file\n"); goto end; } req = d2i_OCSP_REQUEST_bio(derbio, NULL); BIO_free(derbio); if(!req) { BIO_printf(bio_err, "Error reading OCSP request\n"); goto end; } } if (!req && port) { acbio = init_responder(port); if (!acbio) goto end; } if (rsignfile && !rdb) { if (!rkeyfile) rkeyfile = rsignfile; rsigner = load_cert(bio_err, rsignfile, FORMAT_PEM, NULL, e, "responder certificate"); if (!rsigner) { BIO_printf(bio_err, "Error loading responder certificate\n"); goto end; } rca_cert = load_cert(bio_err, rca_filename, FORMAT_PEM, NULL, e, "CA certificate"); if (rcertfile) { rother = load_certs(bio_err, rcertfile, FORMAT_PEM, NULL, e, "responder other certificates"); if (!rother) goto end; } rkey = load_key(bio_err, rkeyfile, FORMAT_PEM, 0, NULL, NULL, "responder private key"); if (!rkey) goto end; } if(acbio) BIO_printf(bio_err, "Waiting for OCSP client connections...\n"); redo_accept: if (acbio) { if (!do_responder(&req, &cbio, acbio, port)) goto end; if (!req) { resp = OCSP_response_create(OCSP_RESPONSE_STATUS_MALFORMEDREQUEST, NULL); send_ocsp_response(cbio, resp); goto done_resp; } } if (!req && (signfile || reqout || host || add_nonce || ridx_filename)) { BIO_printf(bio_err, "Need an OCSP request for this operation!\n"); goto end; } if (req && add_nonce) OCSP_request_add1_nonce(req, NULL, -1); if (signfile) { if (!keyfile) keyfile = signfile; signer = load_cert(bio_err, signfile, FORMAT_PEM, NULL, e, "signer certificate"); if (!signer) { BIO_printf(bio_err, "Error loading signer certificate\n"); goto end; } if (sign_certfile) { sign_other = load_certs(bio_err, sign_certfile, FORMAT_PEM, NULL, e, "signer certificates"); if (!sign_other) goto end; } key = load_key(bio_err, keyfile, FORMAT_PEM, 0, NULL, NULL, "signer private key"); if (!key) goto end; if (!OCSP_request_sign(req, signer, key, NULL, sign_other, sign_flags)) { BIO_printf(bio_err, "Error signing OCSP request\n"); goto end; } } if (req_text && req) OCSP_REQUEST_print(out, req, 0); if (reqout) { derbio = BIO_new_file(reqout, "wb"); if(!derbio) { BIO_printf(bio_err, "Error opening file %s\n", reqout); goto end; } i2d_OCSP_REQUEST_bio(derbio, req); BIO_free(derbio); } if (ridx_filename && (!rkey || !rsigner || !rca_cert)) { BIO_printf(bio_err, "Need a responder certificate, key and CA for this operation!\n"); goto end; } if (ridx_filename && !rdb) { rdb = load_index(ridx_filename, NULL); if (!rdb) goto end; if (!index_index(rdb)) goto end; } if (rdb) { i = make_ocsp_response(&resp, req, rdb, rca_cert, rsigner, rkey, rother, rflags, nmin, ndays); if (cbio) send_ocsp_response(cbio, resp); } else if (host) { #ifndef OPENSSL_NO_SOCK resp = process_responder(bio_err, req, host, path, port, use_ssl, headers, req_timeout); if (!resp) goto end; #else BIO_printf(bio_err, "Error creating connect BIO - sockets not supported.\n"); goto end; #endif } else if (respin) { derbio = BIO_new_file(respin, "rb"); if (!derbio) { BIO_printf(bio_err, "Error Opening OCSP response file\n"); goto end; } resp = d2i_OCSP_RESPONSE_bio(derbio, NULL); BIO_free(derbio); if(!resp) { BIO_printf(bio_err, "Error reading OCSP response\n"); goto end; } } else { ret = 0; goto end; } done_resp: if (respout) { derbio = BIO_new_file(respout, "wb"); if(!derbio) { BIO_printf(bio_err, "Error opening file %s\n", respout); goto end; } i2d_OCSP_RESPONSE_bio(derbio, resp); BIO_free(derbio); } i = OCSP_response_status(resp); if (i != OCSP_RESPONSE_STATUS_SUCCESSFUL) { BIO_printf(out, "Responder Error: %s (%d)\n", OCSP_response_status_str(i), i); if (ignore_err) goto redo_accept; ret = 0; goto end; } if (resp_text) OCSP_RESPONSE_print(out, resp, 0); /* If running as responder don't verify our own response */ if (cbio) { if (accept_count > 0) accept_count--; /* Redo if more connections needed */ if (accept_count) { BIO_free_all(cbio); cbio = NULL; OCSP_REQUEST_free(req); req = NULL; OCSP_RESPONSE_free(resp); resp = NULL; goto redo_accept; } goto end; } if (!store) store = setup_verify(bio_err, CAfile, CApath); if (!store) goto end; if (verify_certfile) { verify_other = load_certs(bio_err, verify_certfile, FORMAT_PEM, NULL, e, "validator certificate"); if (!verify_other) goto end; } bs = OCSP_response_get1_basic(resp); if (!bs) { BIO_printf(bio_err, "Error parsing response\n"); goto end; } if (!noverify) { if (req && ((i = OCSP_check_nonce(req, bs)) <= 0)) { if (i == -1) BIO_printf(bio_err, "WARNING: no nonce in response\n"); else { BIO_printf(bio_err, "Nonce Verify error\n"); goto end; } } i = OCSP_basic_verify(bs, verify_other, store, verify_flags); if (i < 0) i = OCSP_basic_verify(bs, NULL, store, 0); if(i <= 0) { BIO_printf(bio_err, "Response Verify Failure\n"); ERR_print_errors(bio_err); } else BIO_printf(bio_err, "Response verify OK\n"); } if (!print_ocsp_summary(out, bs, req, reqnames, ids, nsec, maxage)) goto end; ret = 0; end: ERR_print_errors(bio_err); X509_free(signer); X509_STORE_free(store); EVP_PKEY_free(key); EVP_PKEY_free(rkey); X509_free(issuer); X509_free(cert); X509_free(rsigner); X509_free(rca_cert); free_index(rdb); BIO_free_all(cbio); BIO_free_all(acbio); BIO_free(out); OCSP_REQUEST_free(req); OCSP_RESPONSE_free(resp); OCSP_BASICRESP_free(bs); sk_OPENSSL_STRING_free(reqnames); sk_OCSP_CERTID_free(ids); sk_X509_pop_free(sign_other, X509_free); sk_X509_pop_free(verify_other, X509_free); sk_CONF_VALUE_pop_free(headers, X509V3_conf_free); if (use_ssl != -1) { OPENSSL_free(host); OPENSSL_free(port); OPENSSL_free(path); } OPENSSL_EXIT(ret); } static int add_ocsp_cert(OCSP_REQUEST **req, X509 *cert, const EVP_MD *cert_id_md,X509 *issuer, STACK_OF(OCSP_CERTID) *ids) { OCSP_CERTID *id; if(!issuer) { BIO_printf(bio_err, "No issuer certificate specified\n"); return 0; } if(!*req) *req = OCSP_REQUEST_new(); if(!*req) goto err; id = OCSP_cert_to_id(cert_id_md, cert, issuer); if(!id || !sk_OCSP_CERTID_push(ids, id)) goto err; if(!OCSP_request_add0_id(*req, id)) goto err; return 1; err: BIO_printf(bio_err, "Error Creating OCSP request\n"); return 0; } static int add_ocsp_serial(OCSP_REQUEST **req, char *serial,const EVP_MD *cert_id_md, X509 *issuer, STACK_OF(OCSP_CERTID) *ids) { OCSP_CERTID *id; X509_NAME *iname; ASN1_BIT_STRING *ikey; ASN1_INTEGER *sno; if(!issuer) { BIO_printf(bio_err, "No issuer certificate specified\n"); return 0; } if(!*req) *req = OCSP_REQUEST_new(); if(!*req) goto err; iname = X509_get_subject_name(issuer); ikey = X509_get0_pubkey_bitstr(issuer); sno = s2i_ASN1_INTEGER(NULL, serial); if(!sno) { BIO_printf(bio_err, "Error converting serial number %s\n", serial); return 0; } id = OCSP_cert_id_new(cert_id_md, iname, ikey, sno); ASN1_INTEGER_free(sno); if(!id || !sk_OCSP_CERTID_push(ids, id)) goto err; if(!OCSP_request_add0_id(*req, id)) goto err; return 1; err: BIO_printf(bio_err, "Error Creating OCSP request\n"); return 0; } static int print_ocsp_summary(BIO *out, OCSP_BASICRESP *bs, OCSP_REQUEST *req, STACK_OF(OPENSSL_STRING) *names, STACK_OF(OCSP_CERTID) *ids, long nsec, long maxage) { OCSP_CERTID *id; char *name; int i; int status, reason; ASN1_GENERALIZEDTIME *rev, *thisupd, *nextupd; if (!bs || !req || !sk_OPENSSL_STRING_num(names) || !sk_OCSP_CERTID_num(ids)) return 1; for (i = 0; i < sk_OCSP_CERTID_num(ids); i++) { id = sk_OCSP_CERTID_value(ids, i); name = sk_OPENSSL_STRING_value(names, i); BIO_printf(out, "%s: ", name); if(!OCSP_resp_find_status(bs, id, &status, &reason, &rev, &thisupd, &nextupd)) { BIO_puts(out, "ERROR: No Status found.\n"); continue; } /* Check validity: if invalid write to output BIO so we * know which response this refers to. */ if (!OCSP_check_validity(thisupd, nextupd, nsec, maxage)) { BIO_puts(out, "WARNING: Status times invalid.\n"); ERR_print_errors(out); } BIO_printf(out, "%s\n", OCSP_cert_status_str(status)); BIO_puts(out, "\tThis Update: "); ASN1_GENERALIZEDTIME_print(out, thisupd); BIO_puts(out, "\n"); if(nextupd) { BIO_puts(out, "\tNext Update: "); ASN1_GENERALIZEDTIME_print(out, nextupd); BIO_puts(out, "\n"); } if (status != V_OCSP_CERTSTATUS_REVOKED) continue; if (reason != -1) BIO_printf(out, "\tReason: %s\n", OCSP_crl_reason_str(reason)); BIO_puts(out, "\tRevocation Time: "); ASN1_GENERALIZEDTIME_print(out, rev); BIO_puts(out, "\n"); } return 1; } static int make_ocsp_response(OCSP_RESPONSE **resp, OCSP_REQUEST *req, CA_DB *db, X509 *ca, X509 *rcert, EVP_PKEY *rkey, STACK_OF(X509) *rother, unsigned long flags, int nmin, int ndays) { ASN1_TIME *thisupd = NULL, *nextupd = NULL; OCSP_CERTID *cid, *ca_id = NULL; OCSP_BASICRESP *bs = NULL; int i, id_count, ret = 1; id_count = OCSP_request_onereq_count(req); if (id_count <= 0) { *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_MALFORMEDREQUEST, NULL); goto end; } bs = OCSP_BASICRESP_new(); thisupd = X509_gmtime_adj(NULL, 0); if (ndays != -1) nextupd = X509_gmtime_adj(NULL, nmin * 60 + ndays * 3600 * 24 ); /* Examine each certificate id in the request */ for (i = 0; i < id_count; i++) { OCSP_ONEREQ *one; ASN1_INTEGER *serial; char **inf; ASN1_OBJECT *cert_id_md_oid; const EVP_MD *cert_id_md; one = OCSP_request_onereq_get0(req, i); cid = OCSP_onereq_get0_id(one); OCSP_id_get0_info(NULL,&cert_id_md_oid, NULL,NULL, cid); cert_id_md = EVP_get_digestbyobj(cert_id_md_oid); if (! cert_id_md) { *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_INTERNALERROR, NULL); goto end; } if (ca_id) OCSP_CERTID_free(ca_id); ca_id = OCSP_cert_to_id(cert_id_md, NULL, ca); /* Is this request about our CA? */ if (OCSP_id_issuer_cmp(ca_id, cid)) { OCSP_basic_add1_status(bs, cid, V_OCSP_CERTSTATUS_UNKNOWN, 0, NULL, thisupd, nextupd); continue; } OCSP_id_get0_info(NULL, NULL, NULL, &serial, cid); inf = lookup_serial(db, serial); if (!inf) OCSP_basic_add1_status(bs, cid, V_OCSP_CERTSTATUS_UNKNOWN, 0, NULL, thisupd, nextupd); else if (inf[DB_type][0] == DB_TYPE_VAL) OCSP_basic_add1_status(bs, cid, V_OCSP_CERTSTATUS_GOOD, 0, NULL, thisupd, nextupd); else if (inf[DB_type][0] == DB_TYPE_REV) { ASN1_OBJECT *inst = NULL; ASN1_TIME *revtm = NULL; ASN1_GENERALIZEDTIME *invtm = NULL; OCSP_SINGLERESP *single; int reason = -1; unpack_revinfo(&revtm, &reason, &inst, &invtm, inf[DB_rev_date]); single = OCSP_basic_add1_status(bs, cid, V_OCSP_CERTSTATUS_REVOKED, reason, revtm, thisupd, nextupd); if (invtm) OCSP_SINGLERESP_add1_ext_i2d(single, NID_invalidity_date, invtm, 0, 0); else if (inst) OCSP_SINGLERESP_add1_ext_i2d(single, NID_hold_instruction_code, inst, 0, 0); ASN1_OBJECT_free(inst); ASN1_TIME_free(revtm); ASN1_GENERALIZEDTIME_free(invtm); } } OCSP_copy_nonce(bs, req); OCSP_basic_sign(bs, rcert, rkey, NULL, rother, flags); *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_SUCCESSFUL, bs); end: ASN1_TIME_free(thisupd); ASN1_TIME_free(nextupd); OCSP_CERTID_free(ca_id); OCSP_BASICRESP_free(bs); return ret; } static char **lookup_serial(CA_DB *db, ASN1_INTEGER *ser) { int i; BIGNUM *bn = NULL; char *itmp, *row[DB_NUMBER],**rrow; for (i = 0; i < DB_NUMBER; i++) row[i] = NULL; bn = ASN1_INTEGER_to_BN(ser,NULL); OPENSSL_assert(bn); /* FIXME: should report an error at this point and abort */ if (BN_is_zero(bn)) itmp = BUF_strdup("00"); else itmp = BN_bn2hex(bn); row[DB_serial] = itmp; BN_free(bn); rrow=TXT_DB_get_by_index(db->db,DB_serial,row); OPENSSL_free(itmp); return rrow; } /* Quick and dirty OCSP server: read in and parse input request */ static BIO *init_responder(char *port) { BIO *acbio = NULL, *bufbio = NULL; bufbio = BIO_new(BIO_f_buffer()); if (!bufbio) goto err; #ifndef OPENSSL_NO_SOCK acbio = BIO_new_accept(port); #else BIO_printf(bio_err, "Error setting up accept BIO - sockets not supported.\n"); #endif if (!acbio) goto err; BIO_set_accept_bios(acbio, bufbio); bufbio = NULL; if (BIO_do_accept(acbio) <= 0) { BIO_printf(bio_err, "Error setting up accept BIO\n"); ERR_print_errors(bio_err); goto err; } return acbio; err: BIO_free_all(acbio); BIO_free(bufbio); return NULL; } static int do_responder(OCSP_REQUEST **preq, BIO **pcbio, BIO *acbio, char *port) { int have_post = 0, len; OCSP_REQUEST *req = NULL; char inbuf[1024]; BIO *cbio = NULL; if (BIO_do_accept(acbio) <= 0) { BIO_printf(bio_err, "Error accepting connection\n"); ERR_print_errors(bio_err); return 0; } cbio = BIO_pop(acbio); *pcbio = cbio; for(;;) { len = BIO_gets(cbio, inbuf, sizeof inbuf); if (len <= 0) return 1; /* Look for "POST" signalling start of query */ if (!have_post) { if(strncmp(inbuf, "POST", 4)) { BIO_printf(bio_err, "Invalid request\n"); return 1; } have_post = 1; } /* Look for end of headers */ if ((inbuf[0] == '\r') || (inbuf[0] == '\n')) break; } /* Try to read OCSP request */ req = d2i_OCSP_REQUEST_bio(cbio, NULL); if (!req) { BIO_printf(bio_err, "Error parsing OCSP request\n"); ERR_print_errors(bio_err); } *preq = req; return 1; } static int send_ocsp_response(BIO *cbio, OCSP_RESPONSE *resp) { char http_resp[] = "HTTP/1.0 200 OK\r\nContent-type: application/ocsp-response\r\n" "Content-Length: %d\r\n\r\n"; if (!cbio) return 0; BIO_printf(cbio, http_resp, i2d_OCSP_RESPONSE(resp, NULL)); i2d_OCSP_RESPONSE_bio(cbio, resp); (void)BIO_flush(cbio); return 1; } static OCSP_RESPONSE *query_responder(BIO *err, BIO *cbio, char *path, STACK_OF(CONF_VALUE) *headers, OCSP_REQUEST *req, int req_timeout) { int fd; int rv; int i; OCSP_REQ_CTX *ctx = NULL; OCSP_RESPONSE *rsp = NULL; fd_set confds; struct timeval tv; if (req_timeout != -1) BIO_set_nbio(cbio, 1); rv = BIO_do_connect(cbio); if ((rv <= 0) && ((req_timeout == -1) || !BIO_should_retry(cbio))) { BIO_puts(err, "Error connecting BIO\n"); return NULL; } if (BIO_get_fd(cbio, &fd) <= 0) { BIO_puts(err, "Can't get connection fd\n"); goto err; } if (req_timeout != -1 && rv <= 0) { FD_ZERO(&confds); openssl_fdset(fd, &confds); tv.tv_usec = 0; tv.tv_sec = req_timeout; rv = select(fd + 1, NULL, (void *)&confds, NULL, &tv); if (rv == 0) { BIO_puts(err, "Timeout on connect\n"); return NULL; } } ctx = OCSP_sendreq_new(cbio, path, NULL, -1); if (!ctx) return NULL; for (i = 0; i < sk_CONF_VALUE_num(headers); i++) { CONF_VALUE *hdr = sk_CONF_VALUE_value(headers, i); if (!OCSP_REQ_CTX_add1_header(ctx, hdr->name, hdr->value)) goto err; } if (!OCSP_REQ_CTX_set1_req(ctx, req)) goto err; for (;;) { rv = OCSP_sendreq_nbio(&rsp, ctx); if (rv != -1) break; if (req_timeout == -1) continue; FD_ZERO(&confds); openssl_fdset(fd, &confds); tv.tv_usec = 0; tv.tv_sec = req_timeout; if (BIO_should_read(cbio)) rv = select(fd + 1, (void *)&confds, NULL, NULL, &tv); else if (BIO_should_write(cbio)) rv = select(fd + 1, NULL, (void *)&confds, NULL, &tv); else { BIO_puts(err, "Unexpected retry condition\n"); goto err; } if (rv == 0) { BIO_puts(err, "Timeout on request\n"); break; } if (rv == -1) { BIO_puts(err, "Select error\n"); break; } } err: if (ctx) OCSP_REQ_CTX_free(ctx); return rsp; } OCSP_RESPONSE *process_responder(BIO *err, OCSP_REQUEST *req, char *host, char *path, char *port, int use_ssl, STACK_OF(CONF_VALUE) *headers, int req_timeout) { BIO *cbio = NULL; SSL_CTX *ctx = NULL; OCSP_RESPONSE *resp = NULL; cbio = BIO_new_connect(host); if (!cbio) { BIO_printf(err, "Error creating connect BIO\n"); goto end; } if (port) BIO_set_conn_port(cbio, port); if (use_ssl == 1) { BIO *sbio; #if !defined(OPENSSL_NO_SSL2) && !defined(OPENSSL_NO_SSL3) ctx = SSL_CTX_new(SSLv23_client_method()); #elif !defined(OPENSSL_NO_SSL3) ctx = SSL_CTX_new(SSLv3_client_method()); #elif !defined(OPENSSL_NO_SSL2) ctx = SSL_CTX_new(SSLv2_client_method()); #else BIO_printf(err, "SSL is disabled\n"); goto end; #endif if (ctx == NULL) { BIO_printf(err, "Error creating SSL context.\n"); goto end; } SSL_CTX_set_mode(ctx, SSL_MODE_AUTO_RETRY); sbio = BIO_new_ssl(ctx, 1); cbio = BIO_push(sbio, cbio); } resp = query_responder(err, cbio, path, headers, req, req_timeout); if (!resp) BIO_printf(bio_err, "Error querying OCSP responsder\n"); end: if (cbio) BIO_free_all(cbio); if (ctx) SSL_CTX_free(ctx); return resp; } #endif