1 files changed, 115 insertions, 0 deletions
diff --git a/third_party/heimdal/lib/gssapi/mech/gssspi_exchange_meta_data.c b/third_party/heimdal/lib/gssapi/mech/gssspi_exchange_meta_data.c
new file mode 100644
index 0000000..fa98cbd
--- /dev/null
+++ b/third_party/heimdal/lib/gssapi/mech/gssspi_exchange_meta_data.c
@@ -0,0 +1,115 @@
+/*-
+ * Copyright (c) 2005 Doug Rabson
+ * All rights reserved.
+ *
+ * Portions Copyright (c) 2009 Apple Inc. All rights reserved.
+ * Portions Copyright (c) 2019 AuriStor, Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#include "mech_locl.h"
+
+GSSAPI_LIB_FUNCTION OM_uint32 GSSAPI_LIB_CALL
+gssspi_exchange_meta_data(
+    OM_uint32 *minor_status,
+    gss_const_OID input_mech_type,
+    gss_cred_id_t input_cred_handle,
+    gss_ctx_id_t *context_handle,
+    gss_const_name_t target_name,
+    OM_uint32 req_flags,
+    gss_const_buffer_t meta_data)
+{
+    OM_uint32 major_status, junk;
+    gssapi_mech_interface m;
+    struct _gss_name *name = (struct _gss_name *) target_name;
+    struct _gss_mechanism_name *mn;
+    struct _gss_context *ctx = (struct _gss_context *) *context_handle;
+    gss_cred_id_t cred_handle;
+    int allocated_ctx;
+    gss_const_OID mech_type = input_mech_type;
+
+    *minor_status = 0;
+
+    if (mech_type == GSS_C_NO_OID)
+	return GSS_S_BAD_MECH;
+
+    if (ctx == NULL) {
+	ctx = calloc(1, sizeof(struct _gss_context));
+	if (ctx == NULL) {
+	    *minor_status = ENOMEM;
+	    return GSS_S_FAILURE;
+	}
+
+	m = ctx->gc_mech = __gss_get_mechanism(mech_type);
+	if (m == NULL) {
+	    free(ctx);
+	    return GSS_S_BAD_MECH;
+	}
+	allocated_ctx = 1;
+    } else {
+	m = ctx->gc_mech;
+	mech_type = &m->gm_mech_oid;
+	allocated_ctx = 0;
+    }
+
+    if (m->gm_exchange_meta_data == NULL) {
+	major_status = GSS_S_BAD_MECH;
+	goto cleanup;
+    }
+
+    major_status = _gss_find_mn(minor_status, name, mech_type, &mn);
+    if (major_status != GSS_S_COMPLETE)
+	goto cleanup;
+
+    if (m->gm_flags & GM_USE_MG_CRED)
+	cred_handle = input_cred_handle;
+    else
+	cred_handle = _gss_mg_find_mech_cred(input_cred_handle, mech_type);
+
+    if (input_cred_handle != GSS_C_NO_CREDENTIAL &&
+	cred_handle == NULL) {
+	major_status = GSS_S_NO_CRED;
+	goto cleanup;
+    }
+
+    /* note: mechanism is not obligated to allocate a context on success */
+    major_status = m->gm_exchange_meta_data(minor_status,
+	    mech_type,
+	    cred_handle,
+	    &ctx->gc_ctx,
+	    mn ? mn->gmn_name : GSS_C_NO_NAME,
+	    req_flags,
+	    meta_data);
+    if (major_status != GSS_S_COMPLETE)
+	_gss_mg_error(m, *minor_status);
+
+cleanup:
+    if (allocated_ctx && major_status != GSS_S_COMPLETE)
+	gss_delete_sec_context(&junk, (gss_ctx_id_t *)&ctx, GSS_C_NO_BUFFER);
+
+    *context_handle = (gss_ctx_id_t) ctx;
+
+    _gss_mg_log(10, "gss-emd: return %d/%d", (int)major_status, (int)*minor_status);
+
+    return major_status;
+}