| /* |
| * Copyright 2001-2018 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 <openssl/opensslconf.h> |
| |
| #ifdef OPENSSL_NO_OCSP |
| NON_EMPTY_TRANSLATION_UNIT |
| #else |
| # ifdef OPENSSL_SYS_VMS |
| # define _XOPEN_SOURCE_EXTENDED/* So fd_set and friends get properly defined |
| * on OpenVMS */ |
| # endif |
| |
| # include <stdio.h> |
| # include <stdlib.h> |
| # include <string.h> |
| # include <time.h> |
| # include <ctype.h> |
| |
| /* Needs to be included before the openssl headers */ |
| # include "apps.h" |
| # include "progs.h" |
| # include "internal/sockets.h" |
| # 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> |
| # include <openssl/rand.h> |
| |
| # if defined(OPENSSL_SYS_UNIX) && !defined(OPENSSL_NO_SOCK) \ |
| && !defined(OPENSSL_NO_POSIX_IO) |
| # define OCSP_DAEMON |
| # include <sys/types.h> |
| # include <sys/wait.h> |
| # include <syslog.h> |
| # include <signal.h> |
| # define MAXERRLEN 1000 /* limit error text sent to syslog to 1000 bytes */ |
| # else |
| # undef LOG_INFO |
| # undef LOG_WARNING |
| # undef LOG_ERR |
| # define LOG_INFO 0 |
| # define LOG_WARNING 1 |
| # define LOG_ERR 2 |
| # 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 void 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 void make_ocsp_response(BIO *err, OCSP_RESPONSE **resp, OCSP_REQUEST *req, |
| CA_DB *db, STACK_OF(X509) *ca, X509 *rcert, |
| EVP_PKEY *rkey, const EVP_MD *md, |
| STACK_OF(OPENSSL_STRING) *sigopts, |
| STACK_OF(X509) *rother, unsigned long flags, |
| int nmin, int ndays, int badsig); |
| |
| static char **lookup_serial(CA_DB *db, ASN1_INTEGER *ser); |
| static BIO *init_responder(const char *port); |
| static int do_responder(OCSP_REQUEST **preq, BIO **pcbio, BIO *acbio, int timeout); |
| static int send_ocsp_response(BIO *cbio, OCSP_RESPONSE *resp); |
| static void log_message(int level, const char *fmt, ...); |
| static char *prog; |
| static int multi = 0; |
| |
| # ifdef OCSP_DAEMON |
| static int acfd = (int) INVALID_SOCKET; |
| static int index_changed(CA_DB *); |
| static void spawn_loop(void); |
| static int print_syslog(const char *str, size_t len, void *levPtr); |
| static void sock_timeout(int signum); |
| # endif |
| |
| # ifndef OPENSSL_NO_SOCK |
| static OCSP_RESPONSE *query_responder(BIO *cbio, const char *host, |
| const char *path, |
| const STACK_OF(CONF_VALUE) *headers, |
| OCSP_REQUEST *req, int req_timeout); |
| # endif |
| |
| typedef enum OPTION_choice { |
| OPT_ERR = -1, OPT_EOF = 0, OPT_HELP, |
| OPT_OUTFILE, OPT_TIMEOUT, OPT_URL, OPT_HOST, OPT_PORT, |
| OPT_IGNORE_ERR, OPT_NOVERIFY, OPT_NONCE, OPT_NO_NONCE, |
| OPT_RESP_NO_CERTS, OPT_RESP_KEY_ID, OPT_NO_CERTS, |
| OPT_NO_SIGNATURE_VERIFY, OPT_NO_CERT_VERIFY, OPT_NO_CHAIN, |
| OPT_NO_CERT_CHECKS, OPT_NO_EXPLICIT, OPT_TRUST_OTHER, |
| OPT_NO_INTERN, OPT_BADSIG, OPT_TEXT, OPT_REQ_TEXT, OPT_RESP_TEXT, |
| OPT_REQIN, OPT_RESPIN, OPT_SIGNER, OPT_VAFILE, OPT_SIGN_OTHER, |
| OPT_VERIFY_OTHER, OPT_CAFILE, OPT_CAPATH, OPT_NOCAFILE, OPT_NOCAPATH, |
| OPT_VALIDITY_PERIOD, OPT_STATUS_AGE, OPT_SIGNKEY, OPT_REQOUT, |
| OPT_RESPOUT, OPT_PATH, OPT_ISSUER, OPT_CERT, OPT_SERIAL, |
| OPT_INDEX, OPT_CA, OPT_NMIN, OPT_REQUEST, OPT_NDAYS, OPT_RSIGNER, |
| OPT_RKEY, OPT_ROTHER, OPT_RMD, OPT_RSIGOPT, OPT_HEADER, |
| OPT_V_ENUM, |
| OPT_MD, |
| OPT_MULTI |
| } OPTION_CHOICE; |
| |
| const OPTIONS ocsp_options[] = { |
| {"help", OPT_HELP, '-', "Display this summary"}, |
| {"out", OPT_OUTFILE, '>', "Output filename"}, |
| {"timeout", OPT_TIMEOUT, 'p', |
| "Connection timeout (in seconds) to the OCSP responder"}, |
| {"url", OPT_URL, 's', "Responder URL"}, |
| {"host", OPT_HOST, 's', "TCP/IP hostname:port to connect to"}, |
| {"port", OPT_PORT, 'p', "Port to run responder on"}, |
| {"ignore_err", OPT_IGNORE_ERR, '-', |
| "Ignore error on OCSP request or response and continue running"}, |
| {"noverify", OPT_NOVERIFY, '-', "Don't verify response at all"}, |
| {"nonce", OPT_NONCE, '-', "Add OCSP nonce to request"}, |
| {"no_nonce", OPT_NO_NONCE, '-', "Don't add OCSP nonce to request"}, |
| {"resp_no_certs", OPT_RESP_NO_CERTS, '-', |
| "Don't include any certificates in response"}, |
| {"resp_key_id", OPT_RESP_KEY_ID, '-', |
| "Identify response by signing certificate key ID"}, |
| # ifdef OCSP_DAEMON |
| {"multi", OPT_MULTI, 'p', "run multiple responder processes"}, |
| # endif |
| {"no_certs", OPT_NO_CERTS, '-', |
| "Don't include any certificates in signed request"}, |
| {"no_signature_verify", OPT_NO_SIGNATURE_VERIFY, '-', |
| "Don't check signature on response"}, |
| {"no_cert_verify", OPT_NO_CERT_VERIFY, '-', |
| "Don't check signing certificate"}, |
| {"no_chain", OPT_NO_CHAIN, '-', "Don't chain verify response"}, |
| {"no_cert_checks", OPT_NO_CERT_CHECKS, '-', |
| "Don't do additional checks on signing certificate"}, |
| {"no_explicit", OPT_NO_EXPLICIT, '-', |
| "Do not explicitly check the chain, just verify the root"}, |
| {"trust_other", OPT_TRUST_OTHER, '-', |
| "Don't verify additional certificates"}, |
| {"no_intern", OPT_NO_INTERN, '-', |
| "Don't search certificates contained in response for signer"}, |
| {"badsig", OPT_BADSIG, '-', |
| "Corrupt last byte of loaded OSCP response signature (for test)"}, |
| {"text", OPT_TEXT, '-', "Print text form of request and response"}, |
| {"req_text", OPT_REQ_TEXT, '-', "Print text form of request"}, |
| {"resp_text", OPT_RESP_TEXT, '-', "Print text form of response"}, |
| {"reqin", OPT_REQIN, 's', "File with the DER-encoded request"}, |
| {"respin", OPT_RESPIN, 's', "File with the DER-encoded response"}, |
| {"signer", OPT_SIGNER, '<', "Certificate to sign OCSP request with"}, |
| {"VAfile", OPT_VAFILE, '<', "Validator certificates file"}, |
| {"sign_other", OPT_SIGN_OTHER, '<', |
| "Additional certificates to include in signed request"}, |
| {"verify_other", OPT_VERIFY_OTHER, '<', |
| "Additional certificates to search for signer"}, |
| {"CAfile", OPT_CAFILE, '<', "Trusted certificates file"}, |
| {"CApath", OPT_CAPATH, '<', "Trusted certificates directory"}, |
| {"no-CAfile", OPT_NOCAFILE, '-', |
| "Do not load the default certificates file"}, |
| {"no-CApath", OPT_NOCAPATH, '-', |
| "Do not load certificates from the default certificates directory"}, |
| {"validity_period", OPT_VALIDITY_PERIOD, 'u', |
| "Maximum validity discrepancy in seconds"}, |
| {"status_age", OPT_STATUS_AGE, 'p', "Maximum status age in seconds"}, |
| {"signkey", OPT_SIGNKEY, 's', "Private key to sign OCSP request with"}, |
| {"reqout", OPT_REQOUT, 's', "Output file for the DER-encoded request"}, |
| {"respout", OPT_RESPOUT, 's', "Output file for the DER-encoded response"}, |
| {"path", OPT_PATH, 's', "Path to use in OCSP request"}, |
| {"issuer", OPT_ISSUER, '<', "Issuer certificate"}, |
| {"cert", OPT_CERT, '<', "Certificate to check"}, |
| {"serial", OPT_SERIAL, 's', "Serial number to check"}, |
| {"index", OPT_INDEX, '<', "Certificate status index file"}, |
| {"CA", OPT_CA, '<', "CA certificate"}, |
| {"nmin", OPT_NMIN, 'p', "Number of minutes before next update"}, |
| {"nrequest", OPT_REQUEST, 'p', |
| "Number of requests to accept (default unlimited)"}, |
| {"ndays", OPT_NDAYS, 'p', "Number of days before next update"}, |
| {"rsigner", OPT_RSIGNER, '<', |
| "Responder certificate to sign responses with"}, |
| {"rkey", OPT_RKEY, '<', "Responder key to sign responses with"}, |
| {"rother", OPT_ROTHER, '<', "Other certificates to include in response"}, |
| {"rmd", OPT_RMD, 's', "Digest Algorithm to use in signature of OCSP response"}, |
| {"rsigopt", OPT_RSIGOPT, 's', "OCSP response signature parameter in n:v form"}, |
| {"header", OPT_HEADER, 's', "key=value header to add"}, |
| {"", OPT_MD, '-', "Any supported digest algorithm (sha1,sha256, ... )"}, |
| OPT_V_OPTIONS, |
| {NULL} |
| }; |
| |
| int ocsp_main(int argc, char **argv) |
| { |
| BIO *acbio = NULL, *cbio = NULL, *derbio = NULL, *out = NULL; |
| const EVP_MD *cert_id_md = NULL, *rsign_md = NULL; |
| STACK_OF(OPENSSL_STRING) *rsign_sigopts = NULL; |
| int trailing_md = 0; |
| CA_DB *rdb = NULL; |
| EVP_PKEY *key = NULL, *rkey = NULL; |
| OCSP_BASICRESP *bs = NULL; |
| OCSP_REQUEST *req = NULL; |
| OCSP_RESPONSE *resp = NULL; |
| STACK_OF(CONF_VALUE) *headers = NULL; |
| STACK_OF(OCSP_CERTID) *ids = NULL; |
| STACK_OF(OPENSSL_STRING) *reqnames = NULL; |
| STACK_OF(X509) *sign_other = NULL, *verify_other = NULL, *rother = NULL; |
| STACK_OF(X509) *issuers = NULL; |
| X509 *issuer = NULL, *cert = NULL; |
| STACK_OF(X509) *rca_cert = NULL; |
| X509 *signer = NULL, *rsigner = NULL; |
| X509_STORE *store = NULL; |
| X509_VERIFY_PARAM *vpm = NULL; |
| const char *CAfile = NULL, *CApath = NULL; |
| char *header, *value; |
| char *host = NULL, *port = NULL, *path = "/", *outfile = NULL; |
| char *rca_filename = NULL, *reqin = NULL, *respin = NULL; |
| char *reqout = NULL, *respout = NULL, *ridx_filename = NULL; |
| char *rsignfile = NULL, *rkeyfile = NULL; |
| char *sign_certfile = NULL, *verify_certfile = NULL, *rcertfile = NULL; |
| char *signfile = NULL, *keyfile = NULL; |
| char *thost = NULL, *tport = NULL, *tpath = NULL; |
| int noCAfile = 0, noCApath = 0; |
| int accept_count = -1, add_nonce = 1, noverify = 0, use_ssl = -1; |
| int vpmtouched = 0, badsig = 0, i, ignore_err = 0, nmin = 0, ndays = -1; |
| int req_text = 0, resp_text = 0, ret = 1; |
| int req_timeout = -1; |
| long nsec = MAX_VALIDITY_PERIOD, maxage = -1; |
| unsigned long sign_flags = 0, verify_flags = 0, rflags = 0; |
| OPTION_CHOICE o; |
| |
| reqnames = sk_OPENSSL_STRING_new_null(); |
| if (reqnames == NULL) |
| goto end; |
| ids = sk_OCSP_CERTID_new_null(); |
| if (ids == NULL) |
| goto end; |
| if ((vpm = X509_VERIFY_PARAM_new()) == NULL) |
| return 1; |
| |
| prog = opt_init(argc, argv, ocsp_options); |
| while ((o = opt_next()) != OPT_EOF) { |
| switch (o) { |
| case OPT_EOF: |
| case OPT_ERR: |
| opthelp: |
| BIO_printf(bio_err, "%s: Use -help for summary.\n", prog); |
| goto end; |
| case OPT_HELP: |
| ret = 0; |
| opt_help(ocsp_options); |
| goto end; |
| case OPT_OUTFILE: |
| outfile = opt_arg(); |
| break; |
| case OPT_TIMEOUT: |
| #ifndef OPENSSL_NO_SOCK |
| req_timeout = atoi(opt_arg()); |
| #endif |
| break; |
| case OPT_URL: |
| OPENSSL_free(thost); |
| OPENSSL_free(tport); |
| OPENSSL_free(tpath); |
| thost = tport = tpath = NULL; |
| if (!OCSP_parse_url(opt_arg(), &host, &port, &path, &use_ssl)) { |
| BIO_printf(bio_err, "%s Error parsing URL\n", prog); |
| goto end; |
| } |
| thost = host; |
| tport = port; |
| tpath = path; |
| break; |
| case OPT_HOST: |
| host = opt_arg(); |
| break; |
| case OPT_PORT: |
| port = opt_arg(); |
| break; |
| case OPT_IGNORE_ERR: |
| ignore_err = 1; |
| break; |
| case OPT_NOVERIFY: |
| noverify = 1; |
| break; |
| case OPT_NONCE: |
| add_nonce = 2; |
| break; |
| case OPT_NO_NONCE: |
| add_nonce = 0; |
| break; |
| case OPT_RESP_NO_CERTS: |
| rflags |= OCSP_NOCERTS; |
| break; |
| case OPT_RESP_KEY_ID: |
| rflags |= OCSP_RESPID_KEY; |
| break; |
| case OPT_NO_CERTS: |
| sign_flags |= OCSP_NOCERTS; |
| break; |
| case OPT_NO_SIGNATURE_VERIFY: |
| verify_flags |= OCSP_NOSIGS; |
| break; |
| case OPT_NO_CERT_VERIFY: |
| verify_flags |= OCSP_NOVERIFY; |
| break; |
| case OPT_NO_CHAIN: |
| verify_flags |= OCSP_NOCHAIN; |
| break; |
| case OPT_NO_CERT_CHECKS: |
| verify_flags |= OCSP_NOCHECKS; |
| break; |
| case OPT_NO_EXPLICIT: |
| verify_flags |= OCSP_NOEXPLICIT; |
| break; |
| case OPT_TRUST_OTHER: |
| verify_flags |= OCSP_TRUSTOTHER; |
| break; |
| case OPT_NO_INTERN: |
| verify_flags |= OCSP_NOINTERN; |
| break; |
| case OPT_BADSIG: |
| badsig = 1; |
| break; |
| case OPT_TEXT: |
| req_text = resp_text = 1; |
| break; |
| case OPT_REQ_TEXT: |
| req_text = 1; |
| break; |
| case OPT_RESP_TEXT: |
| resp_text = 1; |
| break; |
| case OPT_REQIN: |
| reqin = opt_arg(); |
| break; |
| case OPT_RESPIN: |
| respin = opt_arg(); |
| break; |
| case OPT_SIGNER: |
| signfile = opt_arg(); |
| break; |
| case OPT_VAFILE: |
| verify_certfile = opt_arg(); |
| verify_flags |= OCSP_TRUSTOTHER; |
| break; |
| case OPT_SIGN_OTHER: |
| sign_certfile = opt_arg(); |
| break; |
| case OPT_VERIFY_OTHER: |
| verify_certfile = opt_arg(); |
| break; |
| case OPT_CAFILE: |
| CAfile = opt_arg(); |
| break; |
| case OPT_CAPATH: |
| CApath = opt_arg(); |
| break; |
| case OPT_NOCAFILE: |
| noCAfile = 1; |
| break; |
| case OPT_NOCAPATH: |
| noCApath = 1; |
| break; |
| case OPT_V_CASES: |
| if (!opt_verify(o, vpm)) |
| goto end; |
| vpmtouched++; |
| break; |
| case OPT_VALIDITY_PERIOD: |
| opt_long(opt_arg(), &nsec); |
| break; |
| case OPT_STATUS_AGE: |
| opt_long(opt_arg(), &maxage); |
| break; |
| case OPT_SIGNKEY: |
| keyfile = opt_arg(); |
| break; |
| case OPT_REQOUT: |
| reqout = opt_arg(); |
| break; |
| case OPT_RESPOUT: |
| respout = opt_arg(); |
| break; |
| case OPT_PATH: |
| path = opt_arg(); |
| break; |
| case OPT_ISSUER: |
| issuer = load_cert(opt_arg(), FORMAT_PEM, "issuer certificate"); |
| if (issuer == NULL) |
| goto end; |
| if (issuers == NULL) { |
| if ((issuers = sk_X509_new_null()) == NULL) |
| goto end; |
| } |
| sk_X509_push(issuers, issuer); |
| break; |
| case OPT_CERT: |
| X509_free(cert); |
| cert = load_cert(opt_arg(), FORMAT_PEM, "certificate"); |
| if (cert == NULL) |
| goto end; |
| if (cert_id_md == NULL) |
| cert_id_md = EVP_sha1(); |
| if (!add_ocsp_cert(&req, cert, cert_id_md, issuer, ids)) |
| goto end; |
| if (!sk_OPENSSL_STRING_push(reqnames, opt_arg())) |
| goto end; |
| trailing_md = 0; |
| break; |
| case OPT_SERIAL: |
| if (cert_id_md == NULL) |
| cert_id_md = EVP_sha1(); |
| if (!add_ocsp_serial(&req, opt_arg(), cert_id_md, issuer, ids)) |
| goto end; |
| if (!sk_OPENSSL_STRING_push(reqnames, opt_arg())) |
| goto end; |
| trailing_md = 0; |
| break; |
| case OPT_INDEX: |
| ridx_filename = opt_arg(); |
| break; |
| case OPT_CA: |
| rca_filename = opt_arg(); |
| break; |
| case OPT_NMIN: |
| opt_int(opt_arg(), &nmin); |
| if (ndays == -1) |
| ndays = 0; |
| break; |
| case OPT_REQUEST: |
| opt_int(opt_arg(), &accept_count); |
| break; |
| case OPT_NDAYS: |
| ndays = atoi(opt_arg()); |
| break; |
| case OPT_RSIGNER: |
| rsignfile = opt_arg(); |
| break; |
| case OPT_RKEY: |
| rkeyfile = opt_arg(); |
| break; |
| case OPT_ROTHER: |
| rcertfile = opt_arg(); |
| break; |
| case OPT_RMD: /* Response MessageDigest */ |
| if (!opt_md(opt_arg(), &rsign_md)) |
| goto end; |
| break; |
| case OPT_RSIGOPT: |
| if (rsign_sigopts == NULL) |
| rsign_sigopts = sk_OPENSSL_STRING_new_null(); |
| if (rsign_sigopts == NULL || !sk_OPENSSL_STRING_push(rsign_sigopts, opt_arg())) |
| goto end; |
| break; |
| case OPT_HEADER: |
| header = opt_arg(); |
| value = strchr(header, '='); |
| if (value == NULL) { |
| BIO_printf(bio_err, "Missing = in header key=value\n"); |
| goto opthelp; |
| } |
| *value++ = '\0'; |
| if (!X509V3_add_value(header, value, &headers)) |
| goto end; |
| break; |
| case OPT_MD: |
| if (trailing_md) { |
| BIO_printf(bio_err, |
| "%s: Digest must be before -cert or -serial\n", |
| prog); |
| goto opthelp; |
| } |
| if (!opt_md(opt_unknown(), &cert_id_md)) |
| goto opthelp; |
| trailing_md = 1; |
| break; |
| case OPT_MULTI: |
| # ifdef OCSP_DAEMON |
| multi = atoi(opt_arg()); |
| # endif |
| break; |
| } |
| } |
| if (trailing_md) { |
| BIO_printf(bio_err, "%s: Digest must be before -cert or -serial\n", |
| prog); |
| goto opthelp; |
| } |
| argc = opt_num_rest(); |
| if (argc != 0) |
| goto opthelp; |
| |
| /* Have we anything to do? */ |
| if (req == NULL && reqin == NULL |
| && respin == NULL && !(port != NULL && ridx_filename != NULL)) |
| goto opthelp; |
| |
| out = bio_open_default(outfile, 'w', FORMAT_TEXT); |
| if (out == NULL) |
| goto end; |
| |
| if (req == NULL && (add_nonce != 2)) |
| add_nonce = 0; |
| |
| if (req == NULL && reqin != NULL) { |
| derbio = bio_open_default(reqin, 'r', FORMAT_ASN1); |
| if (derbio == NULL) |
| goto end; |
| req = d2i_OCSP_REQUEST_bio(derbio, NULL); |
| BIO_free(derbio); |
| if (req == NULL) { |
| BIO_printf(bio_err, "Error reading OCSP request\n"); |
| goto end; |
| } |
| } |
| |
| if (req == NULL && port != NULL) { |
| acbio = init_responder(port); |
| if (acbio == NULL) |
| goto end; |
| } |
| |
| if (rsignfile != NULL) { |
| if (rkeyfile == NULL) |
| rkeyfile = rsignfile; |
| rsigner = load_cert(rsignfile, FORMAT_PEM, "responder certificate"); |
| if (rsigner == NULL) { |
| BIO_printf(bio_err, "Error loading responder certificate\n"); |
| goto end; |
| } |
| if (!load_certs(rca_filename, &rca_cert, FORMAT_PEM, |
| NULL, "CA certificate")) |
| goto end; |
| if (rcertfile != NULL) { |
| if (!load_certs(rcertfile, &rother, FORMAT_PEM, NULL, |
| "responder other certificates")) |
| goto end; |
| } |
| rkey = load_key(rkeyfile, FORMAT_PEM, 0, NULL, NULL, |
| "responder private key"); |
| if (rkey == NULL) |
| goto end; |
| } |
| |
| if (ridx_filename != NULL |
| && (rkey == NULL || rsigner == NULL || rca_cert == NULL)) { |
| BIO_printf(bio_err, |
| "Responder mode requires certificate, key, and CA.\n"); |
| goto end; |
| } |
| |
| if (ridx_filename != NULL) { |
| rdb = load_index(ridx_filename, NULL); |
| if (rdb == NULL || index_index(rdb) <= 0) { |
| ret = 1; |
| goto end; |
| } |
| } |
| |
| # ifdef OCSP_DAEMON |
| if (multi && acbio != NULL) |
| spawn_loop(); |
| if (acbio != NULL && req_timeout > 0) |
| signal(SIGALRM, sock_timeout); |
| #endif |
| |
| if (acbio != NULL) |
| log_message(LOG_INFO, "waiting for OCSP client connections..."); |
| |
| redo_accept: |
| |
| if (acbio != NULL) { |
| # ifdef OCSP_DAEMON |
| if (index_changed(rdb)) { |
| CA_DB *newrdb = load_index(ridx_filename, NULL); |
| |
| if (newrdb != NULL && index_index(newrdb) > 0) { |
| free_index(rdb); |
| rdb = newrdb; |
| } else { |
| free_index(newrdb); |
| log_message(LOG_ERR, "error reloading updated index: %s", |
| ridx_filename); |
| } |
| } |
| # endif |
| |
| req = NULL; |
| if (!do_responder(&req, &cbio, acbio, req_timeout)) |
| goto redo_accept; |
| |
| if (req == NULL) { |
| resp = |
| OCSP_response_create(OCSP_RESPONSE_STATUS_MALFORMEDREQUEST, |
| NULL); |
| send_ocsp_response(cbio, resp); |
| goto done_resp; |
| } |
| } |
| |
| if (req == NULL |
| && (signfile != NULL || reqout != NULL |
| || host != NULL || add_nonce || ridx_filename != NULL)) { |
| BIO_printf(bio_err, "Need an OCSP request for this operation!\n"); |
| goto end; |
| } |
| |
| if (req != NULL && add_nonce) |
| OCSP_request_add1_nonce(req, NULL, -1); |
| |
| if (signfile != NULL) { |
| if (keyfile == NULL) |
| keyfile = signfile; |
| signer = load_cert(signfile, FORMAT_PEM, "signer certificate"); |
| if (signer == NULL) { |
| BIO_printf(bio_err, "Error loading signer certificate\n"); |
| goto end; |
| } |
| if (sign_certfile != NULL) { |
| if (!load_certs(sign_certfile, &sign_other, FORMAT_PEM, NULL, |
| "signer certificates")) |
| goto end; |
| } |
| key = load_key(keyfile, FORMAT_PEM, 0, NULL, NULL, |
| "signer private key"); |
| if (key == NULL) |
| 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 != NULL) |
| OCSP_REQUEST_print(out, req, 0); |
| |
| if (reqout != NULL) { |
| derbio = bio_open_default(reqout, 'w', FORMAT_ASN1); |
| if (derbio == NULL) |
| goto end; |
| i2d_OCSP_REQUEST_bio(derbio, req); |
| BIO_free(derbio); |
| } |
| |
| if (rdb != NULL) { |
| make_ocsp_response(bio_err, &resp, req, rdb, rca_cert, rsigner, rkey, |
| rsign_md, rsign_sigopts, rother, rflags, nmin, ndays, badsig); |
| if (cbio != NULL) |
| send_ocsp_response(cbio, resp); |
| } else if (host != NULL) { |
| # ifndef OPENSSL_NO_SOCK |
| resp = process_responder(req, host, path, |
| port, use_ssl, headers, req_timeout); |
| if (resp == NULL) |
| goto end; |
| # else |
| BIO_printf(bio_err, |
| "Error creating connect BIO - sockets not supported.\n"); |
| goto end; |
| # endif |
| } else if (respin != NULL) { |
| derbio = bio_open_default(respin, 'r', FORMAT_ASN1); |
| if (derbio == NULL) |
| goto end; |
| resp = d2i_OCSP_RESPONSE_bio(derbio, NULL); |
| BIO_free(derbio); |
| if (resp == NULL) { |
| BIO_printf(bio_err, "Error reading OCSP response\n"); |
| goto end; |
| } |
| } else { |
| ret = 0; |
| goto end; |
| } |
| |
| done_resp: |
| |
| if (respout != NULL) { |
| derbio = bio_open_default(respout, 'w', FORMAT_ASN1); |
| if (derbio == NULL) |
| 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 end; |
| } |
| |
| if (resp_text) |
| OCSP_RESPONSE_print(out, resp, 0); |
| |
| /* If running as responder don't verify our own response */ |
| if (cbio != NULL) { |
| /* If not unlimited, see if we took all we should. */ |
| if (accept_count != -1 && --accept_count <= 0) { |
| ret = 0; |
| goto end; |
| } |
| BIO_free_all(cbio); |
| cbio = NULL; |
| OCSP_REQUEST_free(req); |
| req = NULL; |
| OCSP_RESPONSE_free(resp); |
| resp = NULL; |
| goto redo_accept; |
| } |
| if (ridx_filename != NULL) { |
| ret = 0; |
| goto end; |
| } |
| |
| if (store == NULL) { |
| store = setup_verify(CAfile, CApath, noCAfile, noCApath); |
| if (!store) |
| goto end; |
| } |
| if (vpmtouched) |
| X509_STORE_set1_param(store, vpm); |
| if (verify_certfile != NULL) { |
| if (!load_certs(verify_certfile, &verify_other, FORMAT_PEM, NULL, |
| "validator certificate")) |
| goto end; |
| } |
| |
| bs = OCSP_response_get1_basic(resp); |
| if (bs == NULL) { |
| BIO_printf(bio_err, "Error parsing response\n"); |
| goto end; |
| } |
| |
| ret = 0; |
| |
| if (!noverify) { |
| if (req != NULL && ((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"); |
| ret = 1; |
| goto end; |
| } |
| } |
| |
| i = OCSP_basic_verify(bs, verify_other, store, verify_flags); |
| if (i <= 0 && issuers) { |
| i = OCSP_basic_verify(bs, issuers, store, OCSP_TRUSTOTHER); |
| if (i > 0) |
| ERR_clear_error(); |
| } |
| if (i <= 0) { |
| BIO_printf(bio_err, "Response Verify Failure\n"); |
| ERR_print_errors(bio_err); |
| ret = 1; |
| } else { |
| BIO_printf(bio_err, "Response verify OK\n"); |
| } |
| } |
| |
| print_ocsp_summary(out, bs, req, reqnames, ids, nsec, maxage); |
| |
| end: |
| ERR_print_errors(bio_err); |
| X509_free(signer); |
| X509_STORE_free(store); |
| X509_VERIFY_PARAM_free(vpm); |
| sk_OPENSSL_STRING_free(rsign_sigopts); |
| EVP_PKEY_free(key); |
| EVP_PKEY_free(rkey); |
| X509_free(cert); |
| sk_X509_pop_free(issuers, X509_free); |
| X509_free(rsigner); |
| sk_X509_pop_free(rca_cert, X509_free); |
| free_index(rdb); |
| BIO_free_all(cbio); |
| BIO_free_all(acbio); |
| BIO_free_all(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); |
| OPENSSL_free(thost); |
| OPENSSL_free(tport); |
| OPENSSL_free(tpath); |
| |
| return ret; |
| } |
| |
| static void |
| log_message(int level, const char *fmt, ...) |
| { |
| va_list ap; |
| |
| va_start(ap, fmt); |
| # ifdef OCSP_DAEMON |
| if (multi) { |
| char buf[1024]; |
| if (vsnprintf(buf, sizeof(buf), fmt, ap) > 0) { |
| syslog(level, "%s", buf); |
| } |
| if (level >= LOG_ERR) |
| ERR_print_errors_cb(print_syslog, &level); |
| } |
| # endif |
| if (!multi) { |
| BIO_printf(bio_err, "%s: ", prog); |
| BIO_vprintf(bio_err, fmt, ap); |
| BIO_printf(bio_err, "\n"); |
| } |
| va_end(ap); |
| } |
| |
| # ifdef OCSP_DAEMON |
| |
| static int print_syslog(const char *str, size_t len, void *levPtr) |
| { |
| int level = *(int *)levPtr; |
| int ilen = (len > MAXERRLEN) ? MAXERRLEN : len; |
| |
| syslog(level, "%.*s", ilen, str); |
| |
| return ilen; |
| } |
| |
| static int index_changed(CA_DB *rdb) |
| { |
| struct stat sb; |
| |
| if (rdb != NULL && stat(rdb->dbfname, &sb) != -1) { |
| if (rdb->dbst.st_mtime != sb.st_mtime |
| || rdb->dbst.st_ctime != sb.st_ctime |
| || rdb->dbst.st_ino != sb.st_ino |
| || rdb->dbst.st_dev != sb.st_dev) { |
| syslog(LOG_INFO, "index file changed, reloading"); |
| return 1; |
| } |
| } |
| return 0; |
| } |
| |
| static void killall(int ret, pid_t *kidpids) |
| { |
| int i; |
| |
| for (i = 0; i < multi; ++i) |
| if (kidpids[i] != 0) |
| (void)kill(kidpids[i], SIGTERM); |
| sleep(1); |
| exit(ret); |
| } |
| |
| static int termsig = 0; |
| |
| static void noteterm (int sig) |
| { |
| termsig = sig; |
| } |
| |
| /* |
| * Loop spawning up to `multi` child processes, only child processes return |
| * from this function. The parent process loops until receiving a termination |
| * signal, kills extant children and exits without returning. |
| */ |
| static void spawn_loop(void) |
| { |
| pid_t *kidpids = NULL; |
| int status; |
| int procs = 0; |
| int i; |
| |
| openlog(prog, LOG_PID, LOG_DAEMON); |
| |
| if (setpgid(0, 0)) { |
| syslog(LOG_ERR, "fatal: error detaching from parent process group: %s", |
| strerror(errno)); |
| exit(1); |
| } |
| kidpids = app_malloc(multi * sizeof(*kidpids), "child PID array"); |
| for (i = 0; i < multi; ++i) |
| kidpids[i] = 0; |
| |
| signal(SIGINT, noteterm); |
| signal(SIGTERM, noteterm); |
| |
| while (termsig == 0) { |
| pid_t fpid; |
| |
| /* |
| * Wait for a child to replace when we're at the limit. |
| * Slow down if a child exited abnormally or waitpid() < 0 |
| */ |
| while (termsig == 0 && procs >= multi) { |
| if ((fpid = waitpid(-1, &status, 0)) > 0) { |
| for (i = 0; i < procs; ++i) { |
| if (kidpids[i] == fpid) { |
| kidpids[i] = 0; |
| --procs; |
| break; |
| } |
| } |
| if (i >= multi) { |
| syslog(LOG_ERR, "fatal: internal error: " |
| "no matching child slot for pid: %ld", |
| (long) fpid); |
| killall(1, kidpids); |
| } |
| if (status != 0) { |
| if (WIFEXITED(status)) |
| syslog(LOG_WARNING, "child process: %ld, exit status: %d", |
| (long)fpid, WEXITSTATUS(status)); |
| else if (WIFSIGNALED(status)) |
| syslog(LOG_WARNING, "child process: %ld, term signal %d%s", |
| (long)fpid, WTERMSIG(status), |
| #ifdef WCOREDUMP |
| WCOREDUMP(status) ? " (core dumped)" : |
| #endif |
| ""); |
| sleep(1); |
| } |
| break; |
| } else if (errno != EINTR) { |
| syslog(LOG_ERR, "fatal: waitpid(): %s", strerror(errno)); |
| killall(1, kidpids); |
| } |
| } |
| if (termsig) |
| break; |
| |
| switch(fpid = fork()) { |
| case -1: /* error */ |
| /* System critically low on memory, pause and try again later */ |
| sleep(30); |
| break; |
| case 0: /* child */ |
| OPENSSL_free(kidpids); |
| signal(SIGINT, SIG_DFL); |
| signal(SIGTERM, SIG_DFL); |
| if (termsig) |
| _exit(0); |
| if (RAND_poll() <= 0) { |
| syslog(LOG_ERR, "fatal: RAND_poll() failed"); |
| _exit(1); |
| } |
| return; |
| default: /* parent */ |
| for (i = 0; i < multi; ++i) { |
| if (kidpids[i] == 0) { |
| kidpids[i] = fpid; |
| procs++; |
| break; |
| } |
| } |
| if (i >= multi) { |
| syslog(LOG_ERR, "fatal: internal error: no free child slots"); |
| killall(1, kidpids); |
| } |
| break; |
| } |
| } |
| |
| /* The loop above can only break on termsig */ |
| OPENSSL_free(kidpids); |
| syslog(LOG_INFO, "terminating on signal: %d", termsig); |
| killall(0, kidpids); |
| } |
| # endif |
| |
| 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 == NULL) { |
| BIO_printf(bio_err, "No issuer certificate specified\n"); |
| return 0; |
| } |
| if (*req == NULL) |
| *req = OCSP_REQUEST_new(); |
| if (*req == NULL) |
| goto err; |
| id = OCSP_cert_to_id(cert_id_md, cert, issuer); |
| if (id == NULL || !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 == NULL) { |
| BIO_printf(bio_err, "No issuer certificate specified\n"); |
| return 0; |
| } |
| if (*req == NULL) |
| *req = OCSP_REQUEST_new(); |
| if (*req == NULL) |
| goto err; |
| iname = X509_get_subject_name(issuer); |
| ikey = X509_get0_pubkey_bitstr(issuer); |
| sno = s2i_ASN1_INTEGER(NULL, serial); |
| if (sno == NULL) { |
| 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 == NULL || !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 void 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; |
| const char *name; |
| int i, status, reason; |
| ASN1_GENERALIZEDTIME *rev, *thisupd, *nextupd; |
| |
| if (bs == NULL || req == NULL || !sk_OPENSSL_STRING_num(names) |
| || !sk_OCSP_CERTID_num(ids)) |
| return; |
| |
| 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"); |
| } |
| } |
| |
| static void make_ocsp_response(BIO *err, OCSP_RESPONSE **resp, OCSP_REQUEST *req, |
| CA_DB *db, STACK_OF(X509) *ca, X509 *rcert, |
| EVP_PKEY *rkey, const EVP_MD *rmd, |
| STACK_OF(OPENSSL_STRING) *sigopts, |
| STACK_OF(X509) *rother, unsigned long flags, |
| int nmin, int ndays, int badsig) |
| { |
| ASN1_TIME *thisupd = NULL, *nextupd = NULL; |
| OCSP_CERTID *cid; |
| OCSP_BASICRESP *bs = NULL; |
| int i, id_count; |
| EVP_MD_CTX *mctx = NULL; |
| EVP_PKEY_CTX *pkctx = NULL; |
| |
| 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_time_adj_ex(NULL, ndays, nmin * 60, NULL); |
| |
| /* Examine each certificate id in the request */ |
| for (i = 0; i < id_count; i++) { |
| OCSP_ONEREQ *one; |
| ASN1_INTEGER *serial; |
| char **inf; |
| int jj; |
| int found = 0; |
| 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 == NULL) { |
| *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_INTERNALERROR, |
| NULL); |
| goto end; |
| } |
| for (jj = 0; jj < sk_X509_num(ca) && !found; jj++) { |
| X509 *ca_cert = sk_X509_value(ca, jj); |
| OCSP_CERTID *ca_id = OCSP_cert_to_id(cert_id_md, NULL, ca_cert); |
| |
| if (OCSP_id_issuer_cmp(ca_id, cid) == 0) |
| found = 1; |
| |
| OCSP_CERTID_free(ca_id); |
| } |
| |
| if (!found) { |
| 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 == NULL) { |
| 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 != NULL) |
| OCSP_SINGLERESP_add1_ext_i2d(single, NID_invalidity_date, |
| invtm, 0, 0); |
| else if (inst != NULL) |
| 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); |
| |
| mctx = EVP_MD_CTX_new(); |
| if ( mctx == NULL || !EVP_DigestSignInit(mctx, &pkctx, rmd, NULL, rkey)) { |
| *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_INTERNALERROR, NULL); |
| goto end; |
| } |
| for (i = 0; i < sk_OPENSSL_STRING_num(sigopts); i++) { |
| char *sigopt = sk_OPENSSL_STRING_value(sigopts, i); |
| |
| if (pkey_ctrl_string(pkctx, sigopt) <= 0) { |
| BIO_printf(err, "parameter error \"%s\"\n", sigopt); |
| ERR_print_errors(bio_err); |
| *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_INTERNALERROR, |
| NULL); |
| goto end; |
| } |
| } |
| OCSP_basic_sign_ctx(bs, rcert, mctx, rother, flags); |
| |
| if (badsig) { |
| const ASN1_OCTET_STRING *sig = OCSP_resp_get0_signature(bs); |
| corrupt_signature(sig); |
| } |
| |
| *resp = OCSP_response_create(OCSP_RESPONSE_STATUS_SUCCESSFUL, bs); |
| |
| end: |
| EVP_MD_CTX_free(mctx); |
| ASN1_TIME_free(thisupd); |
| ASN1_TIME_free(nextupd); |
| OCSP_BASICRESP_free(bs); |
| } |
| |
| 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 = OPENSSL_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(const char *port) |
| { |
| # ifdef OPENSSL_NO_SOCK |
| BIO_printf(bio_err, |
| "Error setting up accept BIO - sockets not supported.\n"); |
| return NULL; |
| # else |
| BIO *acbio = NULL, *bufbio = NULL; |
| |
| bufbio = BIO_new(BIO_f_buffer()); |
| if (bufbio == NULL) |
| goto err; |
| acbio = BIO_new(BIO_s_accept()); |
| if (acbio == NULL |
| || BIO_set_bind_mode(acbio, BIO_BIND_REUSEADDR) < 0 |
| || BIO_set_accept_port(acbio, port) < 0) { |
| log_message(LOG_ERR, "Error setting up accept BIO"); |
| goto err; |
| } |
| |
| BIO_set_accept_bios(acbio, bufbio); |
| bufbio = NULL; |
| if (BIO_do_accept(acbio) <= 0) { |
| log_message(LOG_ERR, "Error starting accept"); |
| goto err; |
| } |
| |
| return acbio; |
| |
| err: |
| BIO_free_all(acbio); |
| BIO_free(bufbio); |
| return NULL; |
| # endif |
| } |
| |
| # ifndef OPENSSL_NO_SOCK |
| /* |
| * Decode %xx URL-decoding in-place. Ignores mal-formed sequences. |
| */ |
| static int urldecode(char *p) |
| { |
| unsigned char *out = (unsigned char *)p; |
| unsigned char *save = out; |
| |
| for (; *p; p++) { |
| if (*p != '%') |
| *out++ = *p; |
| else if (isxdigit(_UC(p[1])) && isxdigit(_UC(p[2]))) { |
| /* Don't check, can't fail because of ixdigit() call. */ |
| *out++ = (OPENSSL_hexchar2int(p[1]) << 4) |
| | OPENSSL_hexchar2int(p[2]); |
| p += 2; |
| } |
| else |
| return -1; |
| } |
| *out = '\0'; |
| return (int)(out - save); |
| } |
| # endif |
| |
| # ifdef OCSP_DAEMON |
| static void sock_timeout(int signum) |
| { |
| if (acfd != (int)INVALID_SOCKET) |
| (void)shutdown(acfd, SHUT_RD); |
| } |
| # endif |
| |
| static int do_responder(OCSP_REQUEST **preq, BIO **pcbio, BIO *acbio, |
| int timeout) |
| { |
| # ifdef OPENSSL_NO_SOCK |
| return 0; |
| # else |
| int len; |
| OCSP_REQUEST *req = NULL; |
| char inbuf[2048], reqbuf[2048]; |
| char *p, *q; |
| BIO *cbio = NULL, *getbio = NULL, *b64 = NULL; |
| const char *client; |
| |
| *preq = NULL; |
| |
| /* Connection loss before accept() is routine, ignore silently */ |
| if (BIO_do_accept(acbio) <= 0) |
| return 0; |
| |
| cbio = BIO_pop(acbio); |
| *pcbio = cbio; |
| client = BIO_get_peer_name(cbio); |
| |
| # ifdef OCSP_DAEMON |
| if (timeout > 0) { |
| (void) BIO_get_fd(cbio, &acfd); |
| alarm(timeout); |
| } |
| # endif |
| |
| /* Read the request line. */ |
| len = BIO_gets(cbio, reqbuf, sizeof(reqbuf)); |
| if (len <= 0) |
| goto out; |
| |
| if (strncmp(reqbuf, "GET ", 4) == 0) { |
| /* Expecting GET {sp} /URL {sp} HTTP/1.x */ |
| for (p = reqbuf + 4; *p == ' '; ++p) |
| continue; |
| if (*p != '/') { |
| log_message(LOG_INFO, "Invalid request -- bad URL: %s", client); |
| goto out; |
| } |
| p++; |
| |
| /* Splice off the HTTP version identifier. */ |
| for (q = p; *q; q++) |
| if (*q == ' ') |
| break; |
| if (strncmp(q, " HTTP/1.", 8) != 0) { |
| log_message(LOG_INFO, |
| "Invalid request -- bad HTTP version: %s", client); |
| goto out; |
| } |
| *q = '\0'; |
| |
| /* |
| * Skip "GET / HTTP..." requests often used by load-balancers |
| */ |
| if (p[1] == '\0') |
| goto out; |
| |
| len = urldecode(p); |
| if (len <= 0) { |
| log_message(LOG_INFO, |
| "Invalid request -- bad URL encoding: %s", client); |
| goto out; |
| } |
| if ((getbio = BIO_new_mem_buf(p, len)) == NULL |
| || (b64 = BIO_new(BIO_f_base64())) == NULL) { |
| log_message(LOG_ERR, "Could not allocate base64 bio: %s", client); |
| goto out; |
| } |
| BIO_set_flags(b64, BIO_FLAGS_BASE64_NO_NL); |
| getbio = BIO_push(b64, getbio); |
| } else if (strncmp(reqbuf, "POST ", 5) != 0) { |
| log_message(LOG_INFO, "Invalid request -- bad HTTP verb: %s", client); |
| goto out; |
| } |
| |
| /* Read and skip past the headers. */ |
| for (;;) { |
| len = BIO_gets(cbio, inbuf, sizeof(inbuf)); |
| if (len <= 0) |
| goto out; |
| if ((inbuf[0] == '\r') || (inbuf[0] == '\n')) |
| break; |
| } |
| |
| # ifdef OCSP_DAEMON |
| /* Clear alarm before we close the client socket */ |
| alarm(0); |
| timeout = 0; |
| # endif |
| |
| /* Try to read OCSP request */ |
| if (getbio != NULL) { |
| req = d2i_OCSP_REQUEST_bio(getbio, NULL); |
| BIO_free_all(getbio); |
| } else { |
| req = d2i_OCSP_REQUEST_bio(cbio, NULL); |
| } |
| |
| if (req == NULL) |
| log_message(LOG_ERR, "Error parsing OCSP request"); |
| |
| *preq = req; |
| |
| out: |
| # ifdef OCSP_DAEMON |
| if (timeout > 0) |
| alarm(0); |
| acfd = (int)INVALID_SOCKET; |
| # endif |
| return 1; |
| # endif |
| } |
| |
| 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 == NULL) |
| return 0; |
| BIO_printf(cbio, http_resp, i2d_OCSP_RESPONSE(resp, NULL)); |
| i2d_OCSP_RESPONSE_bio(cbio, resp); |
| (void)BIO_flush(cbio); |
| return 1; |
| } |
| |
| # ifndef OPENSSL_NO_SOCK |
| static OCSP_RESPONSE *query_responder(BIO *cbio, const char *host, |
| const char *path, |
| const STACK_OF(CONF_VALUE) *headers, |
| OCSP_REQUEST *req, int req_timeout) |
| { |
| int fd; |
| int rv; |
| int i; |
| int add_host = 1; |
| 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(bio_err, "Error connecting BIO\n"); |
| return NULL; |
| } |
| |
| if (BIO_get_fd(cbio, &fd) < 0) { |
| BIO_puts(bio_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(bio_err, "Timeout on connect\n"); |
| return NULL; |
| } |
| } |
| |
| ctx = OCSP_sendreq_new(cbio, path, NULL, -1); |
| if (ctx == NULL) |
| return NULL; |
| |
| for (i = 0; i < sk_CONF_VALUE_num(headers); i++) { |
| CONF_VALUE *hdr = sk_CONF_VALUE_value(headers, i); |
| if (add_host == 1 && strcasecmp("host", hdr->name) == 0) |
| add_host = 0; |
| if (!OCSP_REQ_CTX_add1_header(ctx, hdr->name, hdr->value)) |
| goto err; |
| } |
| |
| if (add_host == 1 && OCSP_REQ_CTX_add1_header(ctx, "Host", host) == 0) |
| 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(bio_err, "Unexpected retry condition\n"); |
| goto err; |
| } |
| if (rv == 0) { |
| BIO_puts(bio_err, "Timeout on request\n"); |
| break; |
| } |
| if (rv == -1) { |
| BIO_puts(bio_err, "Select error\n"); |
| break; |
| } |
| |
| } |
| err: |
| OCSP_REQ_CTX_free(ctx); |
| |
| return rsp; |
| } |
| |
| OCSP_RESPONSE *process_responder(OCSP_REQUEST *req, |
| const char *host, const char *path, |
| const 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 == NULL) { |
| BIO_printf(bio_err, "Error creating connect BIO\n"); |
| goto end; |
| } |
| if (port != NULL) |
| BIO_set_conn_port(cbio, port); |
| if (use_ssl == 1) { |
| BIO *sbio; |
| ctx = SSL_CTX_new(TLS_client_method()); |
| if (ctx == NULL) { |
| BIO_printf(bio_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(cbio, host, path, headers, req, req_timeout); |
| if (resp == NULL) |
| BIO_printf(bio_err, "Error querying OCSP responder\n"); |
| end: |
| BIO_free_all(cbio); |
| SSL_CTX_free(ctx); |
| return resp; |
| } |
| # endif |
| |
| #endif |
