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/*
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* Copyright 2007-2019 The OpenSSL Project Authors. All Rights Reserved.
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* Copyright Nokia 2007-2019
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* Copyright Siemens AG 2015-2019
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*
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* Licensed under the Apache License 2.0 (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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/* CMP functions for PKIStatusInfo handling and PKIMessage decomposition */
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#include <string.h>
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#include "cmp_local.h"
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/* explicit #includes not strictly needed since implied by the above: */
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#include <time.h>
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#include <openssl/cmp.h>
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#include <openssl/crmf.h>
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#include <openssl/err.h> /* needed in case config no-deprecated */
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#include <openssl/engine.h>
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#include <openssl/evp.h>
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#include <openssl/objects.h>
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#include <openssl/x509.h>
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#include <openssl/asn1err.h> /* for ASN1_R_TOO_SMALL and ASN1_R_TOO_LARGE */
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/* CMP functions related to PKIStatus */
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int ossl_cmp_pkisi_get_pkistatus(const OSSL_CMP_PKISI *si)
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{
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if (!ossl_assert(si != NULL && si->status != NULL))
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return -1;
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return ossl_cmp_asn1_get_int(si->status);
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}
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/*
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* return the declared identifier and a short explanation for the PKIStatus
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* value as specified in RFC4210, Appendix F.
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*/
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const char *ossl_cmp_PKIStatus_to_string(int status)
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{
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switch (status) {
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case OSSL_CMP_PKISTATUS_accepted:
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return "PKIStatus: accepted";
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case OSSL_CMP_PKISTATUS_grantedWithMods:
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return "PKIStatus: granted with modifications";
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case OSSL_CMP_PKISTATUS_rejection:
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return "PKIStatus: rejection";
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case OSSL_CMP_PKISTATUS_waiting:
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return "PKIStatus: waiting";
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case OSSL_CMP_PKISTATUS_revocationWarning:
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return "PKIStatus: revocation warning - a revocation of the cert is imminent";
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case OSSL_CMP_PKISTATUS_revocationNotification:
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return "PKIStatus: revocation notification - a revocation of the cert has occurred";
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case OSSL_CMP_PKISTATUS_keyUpdateWarning:
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return "PKIStatus: key update warning - update already done for the cert";
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default:
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{
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char buf[40];
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BIO_snprintf(buf, sizeof(buf), "PKIStatus: invalid=%d", status);
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CMPerr(0, CMP_R_ERROR_PARSING_PKISTATUS);
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ossl_cmp_add_error_data(buf);
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return NULL;
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}
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}
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}
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/*
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* returns a pointer to the statusString contained in a PKIStatusInfo
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* returns NULL on error
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*/
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OSSL_CMP_PKIFREETEXT *ossl_cmp_pkisi_get0_statusstring(const OSSL_CMP_PKISI *si)
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{
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if (!ossl_assert(si != NULL))
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return NULL;
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return si->statusString;
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}
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/*
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* returns the FailureInfo bits of the given PKIStatusInfo
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* returns -1 on error
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*/
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int ossl_cmp_pkisi_get_pkifailureinfo(const OSSL_CMP_PKISI *si)
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{
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int i;
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int res = 0;
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if (!ossl_assert(si != NULL && si->failInfo != NULL))
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return -1;
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for (i = 0; i <= OSSL_CMP_PKIFAILUREINFO_MAX; i++)
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if (ASN1_BIT_STRING_get_bit(si->failInfo, i))
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res |= 1 << i;
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return res;
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}
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/*
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* internal function
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* convert PKIFailureInfo number to human-readable string
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*
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* returns pointer to static string
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* returns NULL on error
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*/
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static const char *CMP_PKIFAILUREINFO_to_string(int number)
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{
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switch (number) {
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case OSSL_CMP_PKIFAILUREINFO_badAlg:
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return "badAlg";
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case OSSL_CMP_PKIFAILUREINFO_badMessageCheck:
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return "badMessageCheck";
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case OSSL_CMP_PKIFAILUREINFO_badRequest:
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return "badRequest";
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case OSSL_CMP_PKIFAILUREINFO_badTime:
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return "badTime";
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case OSSL_CMP_PKIFAILUREINFO_badCertId:
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return "badCertId";
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case OSSL_CMP_PKIFAILUREINFO_badDataFormat:
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return "badDataFormat";
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case OSSL_CMP_PKIFAILUREINFO_wrongAuthority:
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return "wrongAuthority";
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case OSSL_CMP_PKIFAILUREINFO_incorrectData:
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return "incorrectData";
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case OSSL_CMP_PKIFAILUREINFO_missingTimeStamp:
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return "missingTimeStamp";
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case OSSL_CMP_PKIFAILUREINFO_badPOP:
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return "badPOP";
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case OSSL_CMP_PKIFAILUREINFO_certRevoked:
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return "certRevoked";
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case OSSL_CMP_PKIFAILUREINFO_certConfirmed:
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return "certConfirmed";
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case OSSL_CMP_PKIFAILUREINFO_wrongIntegrity:
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return "wrongIntegrity";
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case OSSL_CMP_PKIFAILUREINFO_badRecipientNonce:
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return "badRecipientNonce";
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case OSSL_CMP_PKIFAILUREINFO_timeNotAvailable:
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return "timeNotAvailable";
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case OSSL_CMP_PKIFAILUREINFO_unacceptedPolicy:
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return "unacceptedPolicy";
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case OSSL_CMP_PKIFAILUREINFO_unacceptedExtension:
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return "unacceptedExtension";
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case OSSL_CMP_PKIFAILUREINFO_addInfoNotAvailable:
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return "addInfoNotAvailable";
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case OSSL_CMP_PKIFAILUREINFO_badSenderNonce:
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return "badSenderNonce";
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case OSSL_CMP_PKIFAILUREINFO_badCertTemplate:
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return "badCertTemplate";
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case OSSL_CMP_PKIFAILUREINFO_signerNotTrusted:
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return "signerNotTrusted";
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case OSSL_CMP_PKIFAILUREINFO_transactionIdInUse:
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return "transactionIdInUse";
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case OSSL_CMP_PKIFAILUREINFO_unsupportedVersion:
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return "unsupportedVersion";
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case OSSL_CMP_PKIFAILUREINFO_notAuthorized:
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return "notAuthorized";
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case OSSL_CMP_PKIFAILUREINFO_systemUnavail:
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return "systemUnavail";
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case OSSL_CMP_PKIFAILUREINFO_systemFailure:
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return "systemFailure";
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case OSSL_CMP_PKIFAILUREINFO_duplicateCertReq:
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return "duplicateCertReq";
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default:
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return NULL; /* illegal failure number */
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}
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}
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/*
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* checks PKIFailureInfo bits in a given PKIStatusInfo
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* returns 1 if a given bit is set, 0 if not, -1 on error
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*/
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int ossl_cmp_pkisi_pkifailureinfo_check(const OSSL_CMP_PKISI *si, int bit_index)
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{
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if (!ossl_assert(si != NULL && si->failInfo != NULL))
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return -1;
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if (bit_index < 0 || bit_index > OSSL_CMP_PKIFAILUREINFO_MAX) {
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CMPerr(0, CMP_R_INVALID_ARGS);
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return -1;
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}
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return ASN1_BIT_STRING_get_bit(si->failInfo, bit_index);
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}
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/*
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* place human-readable error string created from PKIStatusInfo in given buffer
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* returns pointer to the same buffer containing the string, or NULL on error
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*/
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char *OSSL_CMP_CTX_snprint_PKIStatus(OSSL_CMP_CTX *ctx, char *buf,
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size_t bufsize)
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{
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int status, failure, fail_info;
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const char *status_string, *failure_string;
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OSSL_CMP_PKIFREETEXT *status_strings;
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ASN1_UTF8STRING *text;
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int i;
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int printed_chars;
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int failinfo_found = 0;
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int n_status_strings;
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char* write_ptr = buf;
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#define ADVANCE_BUFFER \
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if (printed_chars < 0 || (size_t)printed_chars >= bufsize) \
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return NULL; \
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write_ptr += printed_chars; \
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bufsize -= printed_chars;
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if (ctx == NULL
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|| buf == NULL
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|| (status = OSSL_CMP_CTX_get_status(ctx)) < 0
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|| (status_string = ossl_cmp_PKIStatus_to_string(status)) == NULL)
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return NULL;
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printed_chars = BIO_snprintf(write_ptr, bufsize, "%s", status_string);
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ADVANCE_BUFFER;
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/* failInfo is optional and may be empty */
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if ((fail_info = OSSL_CMP_CTX_get_failInfoCode(ctx)) > 0) {
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printed_chars = BIO_snprintf(write_ptr, bufsize, "; PKIFailureInfo: ");
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ADVANCE_BUFFER;
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for (failure = 0; failure <= OSSL_CMP_PKIFAILUREINFO_MAX; failure++) {
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if ((fail_info & (1 << failure)) != 0) {
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failure_string = CMP_PKIFAILUREINFO_to_string(failure);
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if (failure_string != NULL) {
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printed_chars = BIO_snprintf(write_ptr, bufsize, "%s%s",
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failure > 0 ? ", " : "",
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failure_string);
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ADVANCE_BUFFER;
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failinfo_found = 1;
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}
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}
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}
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}
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if (!failinfo_found && status != OSSL_CMP_PKISTATUS_accepted
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&& status != OSSL_CMP_PKISTATUS_grantedWithMods) {
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printed_chars = BIO_snprintf(write_ptr, bufsize, "; <no failure info>");
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ADVANCE_BUFFER;
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}
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/* statusString sequence is optional and may be empty */
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status_strings = OSSL_CMP_CTX_get0_statusString(ctx);
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n_status_strings = sk_ASN1_UTF8STRING_num(status_strings);
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if (n_status_strings > 0) {
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printed_chars = BIO_snprintf(write_ptr, bufsize, "; StatusString%s: ",
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n_status_strings > 1 ? "s" : "");
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ADVANCE_BUFFER;
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for (i = 0; i < n_status_strings; i++) {
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text = sk_ASN1_UTF8STRING_value(status_strings, i);
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printed_chars = BIO_snprintf(write_ptr, bufsize, "\"%s\"%s",
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ASN1_STRING_get0_data(text),
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i < n_status_strings - 1 ? ", " : "");
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ADVANCE_BUFFER;
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}
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}
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#undef ADVANCE_BUFFER
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return buf;
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}
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/*
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* Creates a new PKIStatusInfo structure and fills it in
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* returns a pointer to the structure on success, NULL on error
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* note: strongly overlaps with TS_RESP_CTX_set_status_info()
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* and TS_RESP_CTX_add_failure_info() in ../ts/ts_rsp_sign.c
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*/
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OSSL_CMP_PKISI *ossl_cmp_statusinfo_new(int status, int fail_info,
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const char *text)
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{
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OSSL_CMP_PKISI *si = OSSL_CMP_PKISI_new();
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ASN1_UTF8STRING *utf8_text = NULL;
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int failure;
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if (si == NULL)
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goto err;
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if (!ASN1_INTEGER_set(si->status, status))
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goto err;
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if (text != NULL) {
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if ((utf8_text = ASN1_UTF8STRING_new()) == NULL
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|| !ASN1_STRING_set(utf8_text, text, -1))
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goto err;
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if ((si->statusString = sk_ASN1_UTF8STRING_new_null()) == NULL)
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goto err;
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if (!sk_ASN1_UTF8STRING_push(si->statusString, utf8_text))
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goto err;
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/* Ownership is lost. */
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utf8_text = NULL;
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}
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for (failure = 0; failure <= OSSL_CMP_PKIFAILUREINFO_MAX; failure++) {
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if ((fail_info & (1 << failure)) != 0) {
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if (si->failInfo == NULL
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&& (si->failInfo = ASN1_BIT_STRING_new()) == NULL)
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goto err;
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if (!ASN1_BIT_STRING_set_bit(si->failInfo, failure, 1))
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goto err;
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}
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}
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return si;
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err:
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OSSL_CMP_PKISI_free(si);
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ASN1_UTF8STRING_free(utf8_text);
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return NULL;
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}
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