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openssl/crypto/cmp/cmp_ctx.c
Dr. David von Oheimb 1c0eede982 Improve ossl_cmp_build_cert_chain(); publish it as X509_build_chain() 
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/14128)
2021-04-20 10:47:24 +02:00

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/*
* Copyright 2007-2021 The OpenSSL Project Authors. All Rights Reserved.
* Copyright Nokia 2007-2019
* Copyright Siemens AG 2015-2019
*
* 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/trace.h>
#include <openssl/bio.h>
#include <openssl/ocsp.h> /* for OCSP_REVOKED_STATUS_* */
#include "cmp_local.h"
/* explicit #includes not strictly needed since implied by the above: */
#include <openssl/cmp.h>
#include <openssl/crmf.h>
#include <openssl/err.h>
/*
* Get current certificate store containing trusted root CA certs
*/
X509_STORE *OSSL_CMP_CTX_get0_trustedStore(const OSSL_CMP_CTX *ctx)
{
if (ctx == NULL) {
ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
return NULL;
}
return ctx->trusted;
}
/*
* Set certificate store containing trusted (root) CA certs and possibly CRLs
* and a cert verification callback function used for CMP server authentication.
* Any already existing store entry is freed. Given NULL, the entry is reset.
*/
int OSSL_CMP_CTX_set0_trustedStore(OSSL_CMP_CTX *ctx, X509_STORE *store)
{
if (ctx == NULL) {
ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
return 0;
}
X509_STORE_free(ctx->trusted);
ctx->trusted = store;
return 1;
}
/* Get current list of non-trusted intermediate certs */
STACK_OF(X509) *OSSL_CMP_CTX_get0_untrusted(const OSSL_CMP_CTX *ctx)
{
if (ctx == NULL) {
ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
return NULL;
}
return ctx->untrusted;
}
/*
* Set untrusted certificates for path construction in authentication of
* the CMP server and potentially others (TLS server, newly enrolled cert).
*/
int OSSL_CMP_CTX_set1_untrusted(OSSL_CMP_CTX *ctx, STACK_OF(X509) *certs)
{
STACK_OF(X509) *untrusted = NULL;
if (ctx == NULL) {
ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
return 0;
}
if (!ossl_x509_add_certs_new(&untrusted, certs,
X509_ADD_FLAG_UP_REF | X509_ADD_FLAG_NO_DUP))
goto err;
sk_X509_pop_free(ctx->untrusted, X509_free);
ctx->untrusted = untrusted;
return 1;
err:
sk_X509_pop_free(untrusted, X509_free);
return 0;
}
static int cmp_ctx_set_md(OSSL_CMP_CTX *ctx, EVP_MD **pmd, int nid)
{
EVP_MD *md = EVP_MD_fetch(ctx->libctx, OBJ_nid2sn(nid), ctx->propq);
/* fetching in advance to be able to throw error early if unsupported */
if (md == NULL) {
ERR_raise(ERR_LIB_CMP, CMP_R_UNSUPPORTED_ALGORITHM);
return 0;
}
EVP_MD_free(*pmd);
*pmd = md;
return 1;
}
/*
* Allocates and initializes OSSL_CMP_CTX context structure with default values.
* Returns new context on success, NULL on error
*/
OSSL_CMP_CTX *OSSL_CMP_CTX_new(OSSL_LIB_CTX *libctx, const char *propq)
{
OSSL_CMP_CTX *ctx = OPENSSL_zalloc(sizeof(*ctx));
if (ctx == NULL)
goto err;
ctx->libctx = libctx;
if (propq != NULL && (ctx->propq = OPENSSL_strdup(propq)) == NULL)
goto oom;
ctx->log_verbosity = OSSL_CMP_LOG_INFO;
ctx->status = -1;
ctx->failInfoCode = -1;
ctx->msg_timeout = 2 * 60;
if ((ctx->untrusted = sk_X509_new_null()) == NULL)
goto oom;
ctx->pbm_slen = 16;
if (!cmp_ctx_set_md(ctx, &ctx->pbm_owf, NID_sha256))
goto err;
ctx->pbm_itercnt = 500;
ctx->pbm_mac = NID_hmac_sha1;
if (!cmp_ctx_set_md(ctx, &ctx->digest, NID_sha256))
goto err;
ctx->popoMethod = OSSL_CRMF_POPO_SIGNATURE;
ctx->revocationReason = CRL_REASON_NONE;
/* all other elements are initialized to 0 or NULL, respectively */
return ctx;
oom:
ERR_raise(ERR_LIB_X509, ERR_R_MALLOC_FAILURE);
err:
OSSL_CMP_CTX_free(ctx);
return NULL;
}
/* Prepare the OSSL_CMP_CTX for next use, partly re-initializing OSSL_CMP_CTX */
int OSSL_CMP_CTX_reinit(OSSL_CMP_CTX *ctx)
{
if (ctx == NULL) {
ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
return 0;
}
ctx->status = -1;
ctx->failInfoCode = -1;
return ossl_cmp_ctx_set0_statusString(ctx, NULL)
&& ossl_cmp_ctx_set0_newCert(ctx, NULL)
&& ossl_cmp_ctx_set1_newChain(ctx, NULL)
&& ossl_cmp_ctx_set1_caPubs(ctx, NULL)
&& ossl_cmp_ctx_set1_extraCertsIn(ctx, NULL)
&& ossl_cmp_ctx_set0_validatedSrvCert(ctx, NULL)
&& OSSL_CMP_CTX_set1_transactionID(ctx, NULL)
&& OSSL_CMP_CTX_set1_senderNonce(ctx, NULL)
&& ossl_cmp_ctx_set1_recipNonce(ctx, NULL);
}
/* Frees OSSL_CMP_CTX variables allocated in OSSL_CMP_CTX_new() */
void OSSL_CMP_CTX_free(OSSL_CMP_CTX *ctx)
{
if (ctx == NULL)
return;
OPENSSL_free(ctx->serverPath);
OPENSSL_free(ctx->server);
OPENSSL_free(ctx->proxy);
OPENSSL_free(ctx->no_proxy);
X509_free(ctx->srvCert);
X509_free(ctx->validatedSrvCert);
X509_NAME_free(ctx->expected_sender);
X509_STORE_free(ctx->trusted);
sk_X509_pop_free(ctx->untrusted, X509_free);
X509_free(ctx->cert);
sk_X509_pop_free(ctx->chain, X509_free);
EVP_PKEY_free(ctx->pkey);
ASN1_OCTET_STRING_free(ctx->referenceValue);
if (ctx->secretValue != NULL)
OPENSSL_cleanse(ctx->secretValue->data, ctx->secretValue->length);
ASN1_OCTET_STRING_free(ctx->secretValue);
EVP_MD_free(ctx->pbm_owf);
X509_NAME_free(ctx->recipient);
EVP_MD_free(ctx->digest);
ASN1_OCTET_STRING_free(ctx->transactionID);
ASN1_OCTET_STRING_free(ctx->senderNonce);
ASN1_OCTET_STRING_free(ctx->recipNonce);
sk_OSSL_CMP_ITAV_pop_free(ctx->geninfo_ITAVs, OSSL_CMP_ITAV_free);
sk_X509_pop_free(ctx->extraCertsOut, X509_free);
EVP_PKEY_free(ctx->newPkey);
X509_NAME_free(ctx->issuer);
X509_NAME_free(ctx->subjectName);
sk_GENERAL_NAME_pop_free(ctx->subjectAltNames, GENERAL_NAME_free);
sk_X509_EXTENSION_pop_free(ctx->reqExtensions, X509_EXTENSION_free);
sk_POLICYINFO_pop_free(ctx->policies, POLICYINFO_free);
X509_free(ctx->oldCert);
X509_REQ_free(ctx->p10CSR);
sk_OSSL_CMP_ITAV_pop_free(ctx->genm_ITAVs, OSSL_CMP_ITAV_free);
sk_ASN1_UTF8STRING_pop_free(ctx->statusString, ASN1_UTF8STRING_free);
X509_free(ctx->newCert);
sk_X509_pop_free(ctx->newChain, X509_free);
sk_X509_pop_free(ctx->caPubs, X509_free);
sk_X509_pop_free(ctx->extraCertsIn, X509_free);
OPENSSL_free(ctx);
}
int ossl_cmp_ctx_set_status(OSSL_CMP_CTX *ctx, int status)
{
if (!ossl_assert(ctx != NULL))
return 0;
ctx->status = status;
return 1;
}
/*
* Returns the PKIStatus from the last CertRepMessage
* or Revocation Response or error message, -1 on error
*/
int OSSL_CMP_CTX_get_status(const OSSL_CMP_CTX *ctx)
{
if (ctx == NULL) {
ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
return -1;
}
return ctx->status;
}
/*
* Returns the statusString from the last CertRepMessage
* or Revocation Response or error message, NULL on error
*/
OSSL_CMP_PKIFREETEXT *OSSL_CMP_CTX_get0_statusString(const OSSL_CMP_CTX *ctx)
{
if (ctx == NULL) {
ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
return NULL;
}
return ctx->statusString;
}
int ossl_cmp_ctx_set0_statusString(OSSL_CMP_CTX *ctx,
OSSL_CMP_PKIFREETEXT *text)
{
if (!ossl_assert(ctx != NULL))
return 0;
sk_ASN1_UTF8STRING_pop_free(ctx->statusString, ASN1_UTF8STRING_free);
ctx->statusString = text;
return 1;
}
int ossl_cmp_ctx_set0_validatedSrvCert(OSSL_CMP_CTX *ctx, X509 *cert)
{
if (!ossl_assert(ctx != NULL))
return 0;
X509_free(ctx->validatedSrvCert);
ctx->validatedSrvCert = cert;
return 1;
}
/* Set callback function for checking if the cert is ok or should be rejected */
int OSSL_CMP_CTX_set_certConf_cb(OSSL_CMP_CTX *ctx, OSSL_CMP_certConf_cb_t cb)
{
if (ctx == NULL) {
ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
return 0;
}
ctx->certConf_cb = cb;
return 1;
}
/*
* Set argument, respectively a pointer to a structure containing arguments,
* optionally to be used by the certConf callback.
*/
int OSSL_CMP_CTX_set_certConf_cb_arg(OSSL_CMP_CTX *ctx, void *arg)
{
if (ctx == NULL) {
ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
return 0;
}
ctx->certConf_cb_arg = arg;
return 1;
}
/*
* Get argument, respectively the pointer to a structure containing arguments,
* optionally to be used by certConf callback.
* Returns callback argument set previously (NULL if not set or on error)
*/
void *OSSL_CMP_CTX_get_certConf_cb_arg(const OSSL_CMP_CTX *ctx)
{
if (ctx == NULL) {
ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
return NULL;
}
return ctx->certConf_cb_arg;
}
#ifndef OPENSSL_NO_TRACE
static size_t ossl_cmp_log_trace_cb(const char *buf, size_t cnt,
int category, int cmd, void *vdata)
{
OSSL_CMP_CTX *ctx = vdata;
const char *msg;
OSSL_CMP_severity level = -1;
char *func = NULL;
char *file = NULL;
int line = 0;
if (buf == NULL || cnt == 0 || cmd != OSSL_TRACE_CTRL_WRITE || ctx == NULL)
return 0;
if (ctx->log_cb == NULL)
return 1; /* silently drop message */
msg = ossl_cmp_log_parse_metadata(buf, &level, &func, &file, &line);
if (level > ctx->log_verbosity) /* excludes the case level is unknown */
goto end; /* suppress output since severity is not sufficient */
if (!ctx->log_cb(func != NULL ? func : "(no func)",
file != NULL ? file : "(no file)",
line, level, msg))
cnt = 0;
end:
OPENSSL_free(func);
OPENSSL_free(file);
return cnt;
}
#endif
/* Print CMP log messages (i.e., diagnostic info) via the log cb of the ctx */
int ossl_cmp_print_log(OSSL_CMP_severity level, const OSSL_CMP_CTX *ctx,
const char *func, const char *file, int line,
const char *level_str, const char *format, ...)
{
va_list args;
char hugebuf[1024 * 2];
int res = 0;
if (ctx == NULL || ctx->log_cb == NULL)
return 1; /* silently drop message */
if (level > ctx->log_verbosity) /* excludes the case level is unknown */
return 1; /* suppress output since severity is not sufficient */
if (format == NULL)
return 0;
va_start(args, format);
if (func == NULL)
func = "(unset function name)";
if (file == NULL)
file = "(unset file name)";
if (level_str == NULL)
level_str = "(unset level string)";
#ifndef OPENSSL_NO_TRACE
if (OSSL_TRACE_ENABLED(CMP)) {
OSSL_TRACE_BEGIN(CMP) {
int printed =
BIO_snprintf(hugebuf, sizeof(hugebuf),
"%s:%s:%d:" OSSL_CMP_LOG_PREFIX "%s: ",
func, file, line, level_str);
if (printed > 0 && (size_t)printed < sizeof(hugebuf)) {
if (BIO_vsnprintf(hugebuf + printed,
sizeof(hugebuf) - printed, format, args) > 0)
res = BIO_puts(trc_out, hugebuf) > 0;
}
} OSSL_TRACE_END(CMP);
}
#else /* compensate for disabled trace API */
{
if (BIO_vsnprintf(hugebuf, sizeof(hugebuf), format, args) > 0)
res = ctx->log_cb(func, file, line, level, hugebuf);
}
#endif
va_end(args);
return res;
}
/* Set a callback function for error reporting and logging messages */
int OSSL_CMP_CTX_set_log_cb(OSSL_CMP_CTX *ctx, OSSL_CMP_log_cb_t cb)
{
if (ctx == NULL) {
ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
return 0;
}
ctx->log_cb = cb;
#ifndef OPENSSL_NO_TRACE
/* do also in case cb == NULL, to switch off logging output: */
if (!OSSL_trace_set_callback(OSSL_TRACE_CATEGORY_CMP,
ossl_cmp_log_trace_cb, ctx))
return 0;
#endif
return 1;
}
/* Print OpenSSL and CMP errors via the log cb of the ctx or ERR_print_errors */
void OSSL_CMP_CTX_print_errors(const OSSL_CMP_CTX *ctx)
{
if (ctx != NULL && OSSL_CMP_LOG_ERR > ctx->log_verbosity)
return; /* suppress output since severity is not sufficient */
OSSL_CMP_print_errors_cb(ctx == NULL ? NULL : ctx->log_cb);
}
/*
* Set or clear the reference value to be used for identification
* (i.e., the user name) when using PBMAC.
*/
int OSSL_CMP_CTX_set1_referenceValue(OSSL_CMP_CTX *ctx,
const unsigned char *ref, int len)
{
if (ctx == NULL) {
ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
return 0;
}
return ossl_cmp_asn1_octet_string_set1_bytes(&ctx->referenceValue, ref,
len);
}
/* Set or clear the password to be used for protecting messages with PBMAC */
int OSSL_CMP_CTX_set1_secretValue(OSSL_CMP_CTX *ctx, const unsigned char *sec,
const int len)
{
ASN1_OCTET_STRING *secretValue = NULL;
if (ctx == NULL) {
ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
return 0;
}
if (ossl_cmp_asn1_octet_string_set1_bytes(&secretValue, sec, len) != 1)
return 0;
if (ctx->secretValue != NULL) {
OPENSSL_cleanse(ctx->secretValue->data, ctx->secretValue->length);
ASN1_OCTET_STRING_free(ctx->secretValue);
}
ctx->secretValue = secretValue;
return 1;
}
/* Returns the cert chain computed by OSSL_CMP_certConf_cb(), NULL on error */
STACK_OF(X509) *OSSL_CMP_CTX_get1_newChain(const OSSL_CMP_CTX *ctx)
{
if (ctx == NULL) {
ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
return NULL;
}
return X509_chain_up_ref(ctx->newChain);
}
/*
* Copies any given stack of inbound X509 certificates to newChain
* of the OSSL_CMP_CTX structure so that they may be retrieved later.
*/
int ossl_cmp_ctx_set1_newChain(OSSL_CMP_CTX *ctx, STACK_OF(X509) *newChain)
{
if (!ossl_assert(ctx != NULL))
return 0;
sk_X509_pop_free(ctx->newChain, X509_free);
ctx->newChain = NULL;
return newChain == NULL ||
(ctx->newChain = X509_chain_up_ref(newChain)) != NULL;
}
/* Returns the stack of extraCerts received in CertRepMessage, NULL on error */
STACK_OF(X509) *OSSL_CMP_CTX_get1_extraCertsIn(const OSSL_CMP_CTX *ctx)
{
if (ctx == NULL) {
ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
return NULL;
}
return X509_chain_up_ref(ctx->extraCertsIn);
}
/*
* Copies any given stack of inbound X509 certificates to extraCertsIn
* of the OSSL_CMP_CTX structure so that they may be retrieved later.
*/
int ossl_cmp_ctx_set1_extraCertsIn(OSSL_CMP_CTX *ctx,
STACK_OF(X509) *extraCertsIn)
{
if (!ossl_assert(ctx != NULL))
return 0;
sk_X509_pop_free(ctx->extraCertsIn, X509_free);
ctx->extraCertsIn = NULL;
return extraCertsIn == NULL
|| (ctx->extraCertsIn = X509_chain_up_ref(extraCertsIn)) != NULL;
}
/*
* Copies any given stack as the new stack of X509
* certificates to send out in the extraCerts field.
*/
int OSSL_CMP_CTX_set1_extraCertsOut(OSSL_CMP_CTX *ctx,
STACK_OF(X509) *extraCertsOut)
{
if (ctx == NULL) {
ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
return 0;
}
sk_X509_pop_free(ctx->extraCertsOut, X509_free);
ctx->extraCertsOut = NULL;
return extraCertsOut == NULL
|| (ctx->extraCertsOut = X509_chain_up_ref(extraCertsOut)) != NULL;
}
/*
* Add the given policy info object
* to the X509_EXTENSIONS of the requested certificate template.
*/
int OSSL_CMP_CTX_push0_policy(OSSL_CMP_CTX *ctx, POLICYINFO *pinfo)
{
if (ctx == NULL || pinfo == NULL) {
ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
return 0;
}
if (ctx->policies == NULL
&& (ctx->policies = CERTIFICATEPOLICIES_new()) == NULL)
return 0;
return sk_POLICYINFO_push(ctx->policies, pinfo);
}
/* Add an ITAV for geninfo of the PKI message header */
int OSSL_CMP_CTX_push0_geninfo_ITAV(OSSL_CMP_CTX *ctx, OSSL_CMP_ITAV *itav)
{
if (ctx == NULL) {
ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
return 0;
}
return OSSL_CMP_ITAV_push0_stack_item(&ctx->geninfo_ITAVs, itav);
}
/* Add an itav for the body of outgoing general messages */
int OSSL_CMP_CTX_push0_genm_ITAV(OSSL_CMP_CTX *ctx, OSSL_CMP_ITAV *itav)
{
if (ctx == NULL) {
ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
return 0;
}
return OSSL_CMP_ITAV_push0_stack_item(&ctx->genm_ITAVs, itav);
}
/*
* Returns a duplicate of the stack of X509 certificates that
* were received in the caPubs field of the last CertRepMessage.
* Returns NULL on error
*/
STACK_OF(X509) *OSSL_CMP_CTX_get1_caPubs(const OSSL_CMP_CTX *ctx)
{
if (ctx == NULL) {
ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
return NULL;
}
return X509_chain_up_ref(ctx->caPubs);
}
/*
* Copies any given stack of certificates to the given
* OSSL_CMP_CTX structure so that they may be retrieved later.
*/
int ossl_cmp_ctx_set1_caPubs(OSSL_CMP_CTX *ctx, STACK_OF(X509) *caPubs)
{
if (!ossl_assert(ctx != NULL))
return 0;
sk_X509_pop_free(ctx->caPubs, X509_free);
ctx->caPubs = NULL;
return caPubs == NULL || (ctx->caPubs = X509_chain_up_ref(caPubs)) != NULL;
}
#define char_dup OPENSSL_strdup
#define char_free OPENSSL_free
#define DEFINE_OSSL_CMP_CTX_set1(FIELD, TYPE) /* this uses _dup */ \
int OSSL_CMP_CTX_set1_##FIELD(OSSL_CMP_CTX *ctx, const TYPE *val) \
{ \
TYPE *val_dup = NULL; \
\
if (ctx == NULL) { \
ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT); \
return 0; \
} \
\
if (val != NULL && (val_dup = TYPE##_dup(val)) == NULL) \
return 0; \
TYPE##_free(ctx->FIELD); \
ctx->FIELD = val_dup; \
return 1; \
}
#define X509_invalid(cert) (!ossl_x509v3_cache_extensions(cert))
#define EVP_PKEY_invalid(key) 0
#define DEFINE_OSSL_CMP_CTX_set1_up_ref(FIELD, TYPE) \
int OSSL_CMP_CTX_set1_##FIELD(OSSL_CMP_CTX *ctx, TYPE *val) \
{ \
if (ctx == NULL) { \
ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT); \
return 0; \
} \
\
/* prevent misleading error later on malformed cert or provider issue */ \
if (val != NULL && TYPE##_invalid(val)) { \
ERR_raise(ERR_LIB_CMP, CMP_R_POTENTIALLY_INVALID_CERTIFICATE); \
return 0; \
} \
if (val != NULL && !TYPE##_up_ref(val)) \
return 0; \
TYPE##_free(ctx->FIELD); \
ctx->FIELD = val; \
return 1; \
}
/*
* Pins the server certificate to be directly trusted (even if it is expired)
* for verifying response messages.
* Cert pointer is not consumed. It may be NULL to clear the entry.
*/
DEFINE_OSSL_CMP_CTX_set1_up_ref(srvCert, X509)
/* Set the X509 name of the recipient. Set in the PKIHeader */
DEFINE_OSSL_CMP_CTX_set1(recipient, X509_NAME)
/* Store the X509 name of the expected sender in the PKIHeader of responses */
DEFINE_OSSL_CMP_CTX_set1(expected_sender, X509_NAME)
/* Set the X509 name of the issuer. Set in the PKIHeader */
DEFINE_OSSL_CMP_CTX_set1(issuer, X509_NAME)
/*
* Set the subject name that will be placed in the certificate
* request. This will be the subject name on the received certificate.
*/
DEFINE_OSSL_CMP_CTX_set1(subjectName, X509_NAME)
/* Set the X.509v3 certificate request extensions to be used in IR/CR/KUR */
int OSSL_CMP_CTX_set0_reqExtensions(OSSL_CMP_CTX *ctx, X509_EXTENSIONS *exts)
{
if (ctx == NULL) {
ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
return 0;
}
if (sk_GENERAL_NAME_num(ctx->subjectAltNames) > 0 && exts != NULL
&& X509v3_get_ext_by_NID(exts, NID_subject_alt_name, -1) >= 0) {
ERR_raise(ERR_LIB_CMP, CMP_R_MULTIPLE_SAN_SOURCES);
return 0;
}
sk_X509_EXTENSION_pop_free(ctx->reqExtensions, X509_EXTENSION_free);
ctx->reqExtensions = exts;
return 1;
}
/* returns 1 if ctx contains a Subject Alternative Name extension, else 0 */
int OSSL_CMP_CTX_reqExtensions_have_SAN(OSSL_CMP_CTX *ctx)
{
if (ctx == NULL) {
ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
return -1;
}
/* if one of the following conditions 'fail' this is not an error */
return ctx->reqExtensions != NULL
&& X509v3_get_ext_by_NID(ctx->reqExtensions,
NID_subject_alt_name, -1) >= 0;
}
/*
* Add a GENERAL_NAME structure that will be added to the CRMF
* request's extensions field to request subject alternative names.
*/
int OSSL_CMP_CTX_push1_subjectAltName(OSSL_CMP_CTX *ctx,
const GENERAL_NAME *name)
{
GENERAL_NAME *name_dup;
if (ctx == NULL || name == NULL) {
ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
return 0;
}
if (OSSL_CMP_CTX_reqExtensions_have_SAN(ctx) == 1) {
ERR_raise(ERR_LIB_CMP, CMP_R_MULTIPLE_SAN_SOURCES);
return 0;
}
if (ctx->subjectAltNames == NULL
&& (ctx->subjectAltNames = sk_GENERAL_NAME_new_null()) == NULL)
return 0;
if ((name_dup = GENERAL_NAME_dup(name)) == NULL)
return 0;
if (!sk_GENERAL_NAME_push(ctx->subjectAltNames, name_dup)) {
GENERAL_NAME_free(name_dup);
return 0;
}
return 1;
}
/*
* Set our own client certificate, used for example in KUR and when
* doing the IR with existing certificate.
*/
DEFINE_OSSL_CMP_CTX_set1_up_ref(cert, X509)
int OSSL_CMP_CTX_build_cert_chain(OSSL_CMP_CTX *ctx, X509_STORE *own_trusted,
STACK_OF(X509) *candidates)
{
STACK_OF(X509) *chain;
if (ctx == NULL) {
ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
return 0;
}
if (!ossl_x509_add_certs_new(&ctx->untrusted, candidates,
X509_ADD_FLAG_UP_REF | X509_ADD_FLAG_NO_DUP))
return 0;
ossl_cmp_debug(ctx, "trying to build chain for own CMP signer cert");
chain = X509_build_chain(ctx->cert, ctx->untrusted, own_trusted, 0,
ctx->libctx, ctx->propq);
if (chain == NULL) {
ERR_raise(ERR_LIB_CMP, CMP_R_FAILED_BUILDING_OWN_CHAIN);
return 0;
}
ossl_cmp_debug(ctx, "success building chain for own CMP signer cert");
ctx->chain = chain;
return 1;
}
/*
* Set the old certificate that we are updating in KUR
* or the certificate to be revoked in RR, respectively.
* Also used as reference cert (defaulting to cert) for deriving subject DN
* and SANs. Its issuer is used as default recipient in the CMP message header.
*/
DEFINE_OSSL_CMP_CTX_set1_up_ref(oldCert, X509)
/* Set the PKCS#10 CSR to be sent in P10CR */
DEFINE_OSSL_CMP_CTX_set1(p10CSR, X509_REQ)
/*
* Set the (newly received in IP/KUP/CP) certificate in the context.
* TODO: this only permits for one cert to be enrolled at a time.
*/
int ossl_cmp_ctx_set0_newCert(OSSL_CMP_CTX *ctx, X509 *cert)
{
if (!ossl_assert(ctx != NULL))
return 0;
X509_free(ctx->newCert);
ctx->newCert = cert;
return 1;
}
/*
* Get the (newly received in IP/KUP/CP) client certificate from the context
* TODO: this only permits for one client cert to be received...
*/
X509 *OSSL_CMP_CTX_get0_newCert(const OSSL_CMP_CTX *ctx)
{
if (ctx == NULL) {
ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
return NULL;
}
return ctx->newCert;
}
/* Set the client's current private key */
DEFINE_OSSL_CMP_CTX_set1_up_ref(pkey, EVP_PKEY)
/* Set new key pair. Used e.g. when doing Key Update */
int OSSL_CMP_CTX_set0_newPkey(OSSL_CMP_CTX *ctx, int priv, EVP_PKEY *pkey)
{
if (ctx == NULL) {
ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
return 0;
}
EVP_PKEY_free(ctx->newPkey);
ctx->newPkey = pkey;
ctx->newPkey_priv = priv;
return 1;
}
/* Get the private/public key to use for cert enrollment, or NULL on error */
EVP_PKEY *OSSL_CMP_CTX_get0_newPkey(const OSSL_CMP_CTX *ctx, int priv)
{
if (ctx == NULL) {
ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
return NULL;
}
if (ctx->newPkey != NULL)
return priv && !ctx->newPkey_priv ? NULL : ctx->newPkey;
if (ctx->p10CSR != NULL)
return priv ? NULL : X509_REQ_get0_pubkey(ctx->p10CSR);
return ctx->pkey; /* may be NULL */
}
/* Set the given transactionID to the context */
int OSSL_CMP_CTX_set1_transactionID(OSSL_CMP_CTX *ctx,
const ASN1_OCTET_STRING *id)
{
if (ctx == NULL) {
ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
return 0;
}
return ossl_cmp_asn1_octet_string_set1(&ctx->transactionID, id);
}
/* Set the nonce to be used for the recipNonce in the message created next */
int ossl_cmp_ctx_set1_recipNonce(OSSL_CMP_CTX *ctx,
const ASN1_OCTET_STRING *nonce)
{
if (!ossl_assert(ctx != NULL))
return 0;
return ossl_cmp_asn1_octet_string_set1(&ctx->recipNonce, nonce);
}
/* Stores the given nonce as the last senderNonce sent out */
int OSSL_CMP_CTX_set1_senderNonce(OSSL_CMP_CTX *ctx,
const ASN1_OCTET_STRING *nonce)
{
if (ctx == NULL) {
ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
return 0;
}
return ossl_cmp_asn1_octet_string_set1(&ctx->senderNonce, nonce);
}
/* Set the proxy server to use for HTTP(S) connections */
DEFINE_OSSL_CMP_CTX_set1(proxy, char)
/* Set the (HTTP) host name of the CMP server */
DEFINE_OSSL_CMP_CTX_set1(server, char)
/* Set the server exclusion list of the HTTP proxy server */
DEFINE_OSSL_CMP_CTX_set1(no_proxy, char)
/* Set the http connect/disconnect callback function to be used for HTTP(S) */
int OSSL_CMP_CTX_set_http_cb(OSSL_CMP_CTX *ctx, OSSL_HTTP_bio_cb_t cb)
{
if (ctx == NULL) {
ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
return 0;
}
ctx->http_cb = cb;
return 1;
}
/* Set argument optionally to be used by the http connect/disconnect callback */
int OSSL_CMP_CTX_set_http_cb_arg(OSSL_CMP_CTX *ctx, void *arg)
{
if (ctx == NULL) {
ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
return 0;
}
ctx->http_cb_arg = arg;
return 1;
}
/*
* Get argument optionally to be used by the http connect/disconnect callback
* Returns callback argument set previously (NULL if not set or on error)
*/
void *OSSL_CMP_CTX_get_http_cb_arg(const OSSL_CMP_CTX *ctx)
{
if (ctx == NULL) {
ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
return NULL;
}
return ctx->http_cb_arg;
}
/* Set callback function for sending CMP request and receiving response */
int OSSL_CMP_CTX_set_transfer_cb(OSSL_CMP_CTX *ctx, OSSL_CMP_transfer_cb_t cb)
{
if (ctx == NULL) {
ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
return 0;
}
ctx->transfer_cb = cb;
return 1;
}
/* Set argument optionally to be used by the transfer callback */
int OSSL_CMP_CTX_set_transfer_cb_arg(OSSL_CMP_CTX *ctx, void *arg)
{
if (ctx == NULL) {
ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
return 0;
}
ctx->transfer_cb_arg = arg;
return 1;
}
/*
* Get argument optionally to be used by the transfer callback.
* Returns callback argument set previously (NULL if not set or on error)
*/
void *OSSL_CMP_CTX_get_transfer_cb_arg(const OSSL_CMP_CTX *ctx)
{
if (ctx == NULL) {
ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
return NULL;
}
return ctx->transfer_cb_arg;
}
/** Set the HTTP server port to be used */
int OSSL_CMP_CTX_set_serverPort(OSSL_CMP_CTX *ctx, int port)
{
if (ctx == NULL) {
ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
return 0;
}
ctx->serverPort = port;
return 1;
}
/* Set the HTTP path to be used on the server (e.g "pkix/") */
DEFINE_OSSL_CMP_CTX_set1(serverPath, char)
/* Set the failInfo error code as bit encoding in OSSL_CMP_CTX */
int ossl_cmp_ctx_set_failInfoCode(OSSL_CMP_CTX *ctx, int fail_info)
{
if (!ossl_assert(ctx != NULL))
return 0;
ctx->failInfoCode = fail_info;
return 1;
}
/*
* Get the failInfo error code in OSSL_CMP_CTX as bit encoding.
* Returns bit string as integer on success, -1 on error
*/
int OSSL_CMP_CTX_get_failInfoCode(const OSSL_CMP_CTX *ctx)
{
if (ctx == NULL) {
ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
return -1;
}
return ctx->failInfoCode;
}
/* Set a Boolean or integer option of the context to the "val" arg */
int OSSL_CMP_CTX_set_option(OSSL_CMP_CTX *ctx, int opt, int val)
{
int min_val;
if (ctx == NULL) {
ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
return 0;
}
switch (opt) {
case OSSL_CMP_OPT_REVOCATION_REASON:
min_val = OCSP_REVOKED_STATUS_NOSTATUS;
break;
case OSSL_CMP_OPT_POPO_METHOD:
min_val = OSSL_CRMF_POPO_NONE;
break;
default:
min_val = 0;
break;
}
if (val < min_val) {
ERR_raise(ERR_LIB_CMP, CMP_R_VALUE_TOO_SMALL);
return 0;
}
switch (opt) {
case OSSL_CMP_OPT_LOG_VERBOSITY:
if (val > OSSL_CMP_LOG_MAX) {
ERR_raise(ERR_LIB_CMP, CMP_R_VALUE_TOO_LARGE);
return 0;
}
ctx->log_verbosity = val;
break;
case OSSL_CMP_OPT_IMPLICIT_CONFIRM:
ctx->implicitConfirm = val;
break;
case OSSL_CMP_OPT_DISABLE_CONFIRM:
ctx->disableConfirm = val;
break;
case OSSL_CMP_OPT_UNPROTECTED_SEND:
ctx->unprotectedSend = val;
break;
case OSSL_CMP_OPT_UNPROTECTED_ERRORS:
ctx->unprotectedErrors = val;
break;
case OSSL_CMP_OPT_VALIDITY_DAYS:
ctx->days = val;
break;
case OSSL_CMP_OPT_SUBJECTALTNAME_NODEFAULT:
ctx->SubjectAltName_nodefault = val;
break;
case OSSL_CMP_OPT_SUBJECTALTNAME_CRITICAL:
ctx->setSubjectAltNameCritical = val;
break;
case OSSL_CMP_OPT_POLICIES_CRITICAL:
ctx->setPoliciesCritical = val;
break;
case OSSL_CMP_OPT_IGNORE_KEYUSAGE:
ctx->ignore_keyusage = val;
break;
case OSSL_CMP_OPT_POPO_METHOD:
if (val > OSSL_CRMF_POPO_KEYAGREE) {
ERR_raise(ERR_LIB_CMP, CMP_R_VALUE_TOO_LARGE);
return 0;
}
ctx->popoMethod = val;
break;
case OSSL_CMP_OPT_DIGEST_ALGNID:
if (!cmp_ctx_set_md(ctx, &ctx->digest, val))
return 0;
break;
case OSSL_CMP_OPT_OWF_ALGNID:
if (!cmp_ctx_set_md(ctx, &ctx->pbm_owf, val))
return 0;
break;
case OSSL_CMP_OPT_MAC_ALGNID:
ctx->pbm_mac = val;
break;
case OSSL_CMP_OPT_MSG_TIMEOUT:
ctx->msg_timeout = val;
break;
case OSSL_CMP_OPT_TOTAL_TIMEOUT:
ctx->total_timeout = val;
break;
case OSSL_CMP_OPT_PERMIT_TA_IN_EXTRACERTS_FOR_IR:
ctx->permitTAInExtraCertsForIR = val;
break;
case OSSL_CMP_OPT_REVOCATION_REASON:
if (val > OCSP_REVOKED_STATUS_AACOMPROMISE) {
ERR_raise(ERR_LIB_CMP, CMP_R_VALUE_TOO_LARGE);
return 0;
}
ctx->revocationReason = val;
break;
default:
ERR_raise(ERR_LIB_CMP, CMP_R_INVALID_OPTION);
return 0;
}
return 1;
}
/*
* Reads a Boolean or integer option value from the context.
* Returns -1 on error (which is the default OSSL_CMP_OPT_REVOCATION_REASON)
*/
int OSSL_CMP_CTX_get_option(const OSSL_CMP_CTX *ctx, int opt)
{
if (ctx == NULL) {
ERR_raise(ERR_LIB_CMP, CMP_R_NULL_ARGUMENT);
return -1;
}
switch (opt) {
case OSSL_CMP_OPT_LOG_VERBOSITY:
return ctx->log_verbosity;
case OSSL_CMP_OPT_IMPLICIT_CONFIRM:
return ctx->implicitConfirm;
case OSSL_CMP_OPT_DISABLE_CONFIRM:
return ctx->disableConfirm;
case OSSL_CMP_OPT_UNPROTECTED_SEND:
return ctx->unprotectedSend;
case OSSL_CMP_OPT_UNPROTECTED_ERRORS:
return ctx->unprotectedErrors;
case OSSL_CMP_OPT_VALIDITY_DAYS:
return ctx->days;
case OSSL_CMP_OPT_SUBJECTALTNAME_NODEFAULT:
return ctx->SubjectAltName_nodefault;
case OSSL_CMP_OPT_SUBJECTALTNAME_CRITICAL:
return ctx->setSubjectAltNameCritical;
case OSSL_CMP_OPT_POLICIES_CRITICAL:
return ctx->setPoliciesCritical;
case OSSL_CMP_OPT_IGNORE_KEYUSAGE:
return ctx->ignore_keyusage;
case OSSL_CMP_OPT_POPO_METHOD:
return ctx->popoMethod;
case OSSL_CMP_OPT_DIGEST_ALGNID:
return EVP_MD_type(ctx->digest);
case OSSL_CMP_OPT_OWF_ALGNID:
return EVP_MD_type(ctx->pbm_owf);
case OSSL_CMP_OPT_MAC_ALGNID:
return ctx->pbm_mac;
case OSSL_CMP_OPT_MSG_TIMEOUT:
return ctx->msg_timeout;
case OSSL_CMP_OPT_TOTAL_TIMEOUT:
return ctx->total_timeout;
case OSSL_CMP_OPT_PERMIT_TA_IN_EXTRACERTS_FOR_IR:
return ctx->permitTAInExtraCertsForIR;
case OSSL_CMP_OPT_REVOCATION_REASON:
return ctx->revocationReason;
default:
ERR_raise(ERR_LIB_CMP, CMP_R_INVALID_OPTION);
return -1;
}
}
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