* or implied warranty.
*/
+/*
+ * Message protection services: wrap with scatter-gather API.
+ */
+
#include "gssapiP_eap.h"
+unsigned char
+rfc4121Flags(gss_ctx_id_t ctx, int receiving)
+{
+ unsigned char flags;
+ int isAcceptor;
+
+ isAcceptor = !CTX_IS_INITIATOR(ctx);
+ if (receiving)
+ isAcceptor = !isAcceptor;
+
+ flags = 0;
+ if (isAcceptor)
+ flags |= TOK_FLAG_SENDER_IS_ACCEPTOR;
+
+ if ((ctx->flags & CTX_FLAG_KRB_REAUTH) &&
+ (ctx->gssFlags & GSS_C_MUTUAL_FLAG))
+ flags |= TOK_FLAG_ACCEPTOR_SUBKEY;
+
+ return flags;
+}
+
OM_uint32
gssEapWrapOrGetMIC(OM_uint32 *minor,
gss_ctx_id_t ctx,
gss_iov_buffer_t header;
gss_iov_buffer_t padding;
gss_iov_buffer_t trailer;
- unsigned char acceptorFlag;
+ unsigned char flags;
unsigned char *outbuf = NULL;
unsigned char *tbuf = NULL;
int keyUsage;
size_t rrc = 0;
- unsigned int gssHeaderLen, gssTrailerLen;
+ size_t gssHeaderLen, gssTrailerLen;
size_t dataLen, assocDataLen;
+ krb5_context krbContext;
+#ifdef HAVE_HEIMDAL_VERSION
+ krb5_crypto krbCrypto = NULL;
+#endif
+
+ if (ctx->encryptionType == ENCTYPE_NULL) {
+ *minor = GSSEAP_KEY_UNAVAILABLE;
+ return GSS_S_UNAVAILABLE;
+ }
+
+ GSSEAP_KRB_INIT(&krbContext);
- if (!CTX_IS_ESTABLISHED(ctx))
- return GSS_S_NO_CONTEXT;
+ flags = rfc4121Flags(ctx, FALSE);
- acceptorFlag = CTX_IS_INITIATOR(ctx) ? 0 : TOK_FLAG_SENDER_IS_ACCEPTOR;
- keyUsage = ((toktype == TOK_TYPE_WRAP)
- ? (CTX_IS_INITIATOR(ctx)
+ if (toktype == TOK_TYPE_WRAP) {
+ keyUsage = CTX_IS_INITIATOR(ctx)
? KEY_USAGE_INITIATOR_SEAL
- : KEY_USAGE_ACCEPTOR_SEAL)
- : (CTX_IS_INITIATOR(ctx)
+ : KEY_USAGE_ACCEPTOR_SEAL;
+ } else {
+ keyUsage = CTX_IS_INITIATOR(ctx)
? KEY_USAGE_INITIATOR_SIGN
- : KEY_USAGE_ACCEPTOR_SIGN));
+ : KEY_USAGE_ACCEPTOR_SIGN;
+ }
gssEapIovMessageLength(iov, iov_count, &dataLen, &assocDataLen);
header = gssEapLocateIov(iov, iov_count, GSS_IOV_BUFFER_TYPE_HEADER);
if (header == NULL) {
- *minor = EINVAL;
+ *minor = GSSEAP_MISSING_IOV;
return GSS_S_FAILURE;
}
trailer = gssEapLocateIov(iov, iov_count, GSS_IOV_BUFFER_TYPE_TRAILER);
+#ifdef HAVE_HEIMDAL_VERSION
+ code = krb5_crypto_init(krbContext, &ctx->rfc3961Key, ETYPE_NULL, &krbCrypto);
+ if (code != 0)
+ goto cleanup;
+#endif
+
if (toktype == TOK_TYPE_WRAP && conf_req_flag) {
- unsigned int krbHeaderLen, krbTrailerLen, krbPadLen;
- size_t ec = 0;
- size_t confDataLen = dataLen - assocDataLen;
+ size_t krbHeaderLen, krbTrailerLen, krbPadLen;
+ size_t ec = 0, confDataLen = dataLen - assocDataLen;
- code = krb5_c_crypto_length(ctx->kerberosCtx, ctx->encryptionType,
- KRB5_CRYPTO_TYPE_HEADER, &krbHeaderLen);
+ code = krbCryptoLength(krbContext, KRB_CRYPTO_CONTEXT(ctx),
+ KRB5_CRYPTO_TYPE_HEADER, &krbHeaderLen);
if (code != 0)
goto cleanup;
- code = krb5_c_padding_length(ctx->kerberosCtx, ctx->encryptionType,
- confDataLen + 16 /* E(Header) */,
- &krbPadLen);
+ code = krbPaddingLength(krbContext, KRB_CRYPTO_CONTEXT(ctx),
+ confDataLen + 16 /* E(Header) */,
+ &krbPadLen);
if (code != 0)
goto cleanup;
if (krbPadLen == 0 && (ctx->gssFlags & GSS_C_DCE_STYLE)) {
/* Windows rejects AEAD tokens with non-zero EC */
- code = krb5_c_block_size(ctx->kerberosCtx, ctx->encryptionType, &ec);
+ code = krbBlockSize(krbContext, KRB_CRYPTO_CONTEXT(ctx), &ec);
if (code != 0)
goto cleanup;
} else
ec = krbPadLen;
- code = krb5_c_crypto_length(ctx->kerberosCtx, ctx->encryptionType,
- KRB5_CRYPTO_TYPE_TRAILER, &krbTrailerLen);
+ code = krbCryptoLength(krbContext, KRB_CRYPTO_CONTEXT(ctx),
+ KRB5_CRYPTO_TYPE_TRAILER, &krbTrailerLen);
if (code != 0)
goto cleanup;
if (header->type & GSS_IOV_BUFFER_FLAG_ALLOCATE) {
code = gssEapAllocIov(header, (size_t)gssHeaderLen);
} else if (header->buffer.length < gssHeaderLen)
- code = KRB5_BAD_MSIZE;
+ code = GSSEAP_WRONG_SIZE;
if (code != 0)
goto cleanup;
outbuf = (unsigned char *)header->buffer.value;
if (trailer->type & GSS_IOV_BUFFER_FLAG_ALLOCATE)
code = gssEapAllocIov(trailer, (size_t)gssTrailerLen);
else if (trailer->buffer.length < gssTrailerLen)
- code = KRB5_BAD_MSIZE;
+ code = GSSEAP_WRONG_SIZE;
if (code != 0)
goto cleanup;
trailer->buffer.length = (size_t)gssTrailerLen;
/* TOK_ID */
store_uint16_be((uint16_t)toktype, outbuf);
/* flags */
- outbuf[2] = (acceptorFlag
- | (conf_req_flag ? TOK_FLAG_WRAP_CONFIDENTIAL : 0)
- | (0 ? TOK_FLAG_ACCEPTOR_SUBKEY : 0));
+ outbuf[2] = flags
+ | (conf_req_flag ? TOK_FLAG_WRAP_CONFIDENTIAL : 0);
/* filler */
outbuf[3] = 0xFF;
/* EC */
store_uint16_be(ec, outbuf + 4);
/* RRC */
store_uint16_be(0, outbuf + 6);
- store_64_be(ctx->sendSeq, outbuf + 8);
+ store_uint64_be(ctx->sendSeq, outbuf + 8);
/*
* EC | copy of header to be encrypted, located in
memset(tbuf, 0xFF, ec);
memcpy(tbuf + ec, header->buffer.value, 16);
- code = gssEapEncrypt(ctx->kerberosCtx,
+ code = gssEapEncrypt(krbContext,
((ctx->gssFlags & GSS_C_DCE_STYLE) != 0),
- ec, rrc, ctx->rfc3961Key,
- keyUsage, 0, iov, iov_count);
+ ec, rrc, KRB_CRYPTO_CONTEXT(ctx),
+ keyUsage, iov, iov_count);
if (code != 0)
goto cleanup;
gssHeaderLen = 16;
- code = krb5_c_crypto_length(ctx->kerberosCtx, ctx->encryptionType,
- KRB5_CRYPTO_TYPE_CHECKSUM,
- &gssTrailerLen);
+ code = krbCryptoLength(krbContext, KRB_CRYPTO_CONTEXT(ctx),
+ KRB5_CRYPTO_TYPE_CHECKSUM, &gssTrailerLen);
if (code != 0)
goto cleanup;
if (header->type & GSS_IOV_BUFFER_FLAG_ALLOCATE)
code = gssEapAllocIov(header, (size_t)gssHeaderLen);
else if (header->buffer.length < gssHeaderLen)
- code = KRB5_BAD_MSIZE;
+ code = GSSEAP_WRONG_SIZE;
if (code != 0)
goto cleanup;
outbuf = (unsigned char *)header->buffer.value;
if (trailer->type & GSS_IOV_BUFFER_FLAG_ALLOCATE)
code = gssEapAllocIov(trailer, (size_t)gssTrailerLen);
else if (trailer->buffer.length < gssTrailerLen)
- code = KRB5_BAD_MSIZE;
+ code = GSSEAP_WRONG_SIZE;
if (code != 0)
goto cleanup;
trailer->buffer.length = (size_t)gssTrailerLen;
/* TOK_ID */
store_uint16_be((uint16_t)toktype, outbuf);
/* flags */
- outbuf[2] = (acceptorFlag
- | (0 ? TOK_FLAG_ACCEPTOR_SUBKEY : 0));
+ outbuf[2] = flags;
/* filler */
outbuf[3] = 0xFF;
if (toktype == TOK_TYPE_WRAP) {
store_uint16_be(0xFFFF, outbuf + 4);
store_uint16_be(0xFFFF, outbuf + 6);
}
- store_64_be(ctx->sendSeq, outbuf + 8);
+ store_uint64_be(ctx->sendSeq, outbuf + 8);
- code = gssEapSign(ctx->kerberosCtx, ctx->checksumType,
- rrc, ctx->rfc3961Key, keyUsage,
+ code = gssEapSign(krbContext, ctx->checksumType, rrc,
+ KRB_CRYPTO_CONTEXT(ctx), keyUsage,
iov, iov_count);
if (code != 0)
goto cleanup;
} else if (toktype == TOK_TYPE_MIC) {
trailer = NULL;
goto wrap_with_checksum;
- } else if (toktype == TOK_TYPE_DELETE) {
+ } else if (toktype == TOK_TYPE_DELETE_CONTEXT) {
+ trailer = NULL;
goto wrap_with_checksum;
} else {
abort();
}
code = 0;
+ if (conf_state != NULL)
+ *conf_state = conf_req_flag;
cleanup:
if (code != 0)
gssEapReleaseIov(iov, iov_count);
+#ifdef HAVE_HEIMDAL_VERSION
+ if (krbCrypto != NULL)
+ krb5_crypto_destroy(krbContext, krbCrypto);
+#endif
*minor = code;
- if (code == 0)
- return GSS_S_FAILURE;
- else
- return GSS_S_COMPLETE;
+ return (code == 0) ? GSS_S_COMPLETE : GSS_S_FAILURE;
}
OM_uint32
gss_iov_buffer_desc *iov,
int iov_count)
{
- return gssEapWrapOrGetMIC(minor, ctx, conf_req_flag, conf_state,
- iov, iov_count, TOK_TYPE_WRAP);
+ OM_uint32 major;
+
+ if (ctx == GSS_C_NO_CONTEXT) {
+ *minor = EINVAL;
+ return GSS_S_CALL_INACCESSIBLE_READ | GSS_S_NO_CONTEXT;
+ }
+
+ if (qop_req != GSS_C_QOP_DEFAULT) {
+ *minor = GSSEAP_UNKNOWN_QOP;
+ return GSS_S_UNAVAILABLE;
+ }
+
+ *minor = 0;
+
+ GSSEAP_MUTEX_LOCK(&ctx->mutex);
+
+ if (!CTX_IS_ESTABLISHED(ctx)) {
+ major = GSS_S_NO_CONTEXT;
+ *minor = GSSEAP_CONTEXT_INCOMPLETE;
+ goto cleanup;
+ }
+
+ major = gssEapWrapOrGetMIC(minor, ctx, conf_req_flag, conf_state,
+ iov, iov_count, TOK_TYPE_WRAP);
+ if (GSS_ERROR(major))
+ goto cleanup;
+
+cleanup:
+ GSSEAP_MUTEX_UNLOCK(&ctx->mutex);
+
+ return major;
}
projects / mech_eap.orig / blobdiff