1 files changed, 111 insertions, 0 deletions
diff --git a/source4/heimdal/lib/gssapi/krb5/init.c b/source4/heimdal/lib/gssapi/krb5/init.c
new file mode 100644
index 0000000000..cbef8740b7
--- /dev/null
+++ b/source4/heimdal/lib/gssapi/krb5/init.c
@@ -0,0 +1,111 @@
+/*
+ * Copyright (c) 1997 - 2001, 2003 Kungliga Tekniska Högskolan
+ * (Royal Institute of Technology, Stockholm, Sweden). 
+ * 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. 
+ *
+ * 3. Neither the name of the Institute nor the names of its contributors 
+ *    may be used to endorse or promote products derived from this software 
+ *    without specific prior written permission. 
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE 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 INSTITUTE 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 "krb5/gsskrb5_locl.h"
+
+RCSID("$Id: init.c,v 1.9 2006/10/07 22:14:58 lha Exp $");
+
+static HEIMDAL_MUTEX _gsskrb5_context_mutex = HEIMDAL_MUTEX_INITIALIZER;
+static int created_key;
+static HEIMDAL_thread_key gssapi_context_key;
+
+static void
+gssapi_destroy_thread_context(void *ptr)
+{
+    struct gssapi_thr_context *ctx = ptr;
+
+    if (ctx == NULL)
+	return;
+    if (ctx->error_string)
+	free(ctx->error_string);
+    HEIMDAL_MUTEX_destroy(&ctx->mutex);
+    free(ctx);
+}
+
+
+struct gssapi_thr_context *
+_gsskrb5_get_thread_context(int createp)
+{
+    struct gssapi_thr_context *ctx;
+    int ret;
+
+    HEIMDAL_MUTEX_lock(&_gsskrb5_context_mutex);
+
+    if (!created_key)
+	abort();
+    ctx = HEIMDAL_getspecific(gssapi_context_key);
+    if (ctx == NULL) {
+	if (!createp)
+	    goto fail;
+	ctx = malloc(sizeof(*ctx));
+	if (ctx == NULL)
+	    goto fail;
+	ctx->error_string = NULL;
+	HEIMDAL_MUTEX_init(&ctx->mutex);
+	HEIMDAL_setspecific(gssapi_context_key, ctx, ret);
+	if (ret)
+	    goto fail;
+    }
+    HEIMDAL_MUTEX_unlock(&_gsskrb5_context_mutex);
+    return ctx;
+ fail:
+    HEIMDAL_MUTEX_unlock(&_gsskrb5_context_mutex);
+    if (ctx)
+	free(ctx);
+    return NULL;
+}
+
+krb5_error_code
+_gsskrb5_init (void)
+{
+    krb5_error_code ret = 0;
+
+    HEIMDAL_MUTEX_lock(&_gsskrb5_context_mutex);
+
+    if(_gsskrb5_context == NULL)
+	ret = krb5_init_context (&_gsskrb5_context);
+    if (ret == 0 && !created_key) {
+	HEIMDAL_key_create(&gssapi_context_key, 
+			   gssapi_destroy_thread_context,
+			   ret);
+	if (ret) {
+	    krb5_free_context(_gsskrb5_context);
+	    _gsskrb5_context = NULL;
+	} else
+	    created_key = 1;
+    }
+
+    HEIMDAL_MUTEX_unlock(&_gsskrb5_context_mutex);
+
+    return ret;
+}