r8302: import mini HEIMDAL into the tree

(This used to be commit 118be28a7aef233799956615a99d1a2a74dac175)

1 files changed, 109 insertions, 0 deletions

diff --git a/source4/heimdal/lib/krb5/error_string.c b/source4/heimdal/lib/krb5/error_string.c
new file mode 100644
index 0000000000..649bdd20fd
--- /dev/null
+++ b/source4/heimdal/lib/krb5/error_string.c
@@ -0,0 +1,109 @@
+/*
+ * Copyright (c) 2001 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_locl.h"
+
+RCSID("$Id: error_string.c,v 1.3 2004/05/25 21:23:55 lha Exp $");
+
+#undef __attribute__
+#define __attribute__(X)
+
+void KRB5_LIB_FUNCTION
+krb5_free_error_string(krb5_context context, char *str)
+{
+    HEIMDAL_MUTEX_lock(context->mutex);
+    if (str != context->error_buf)
+	free(str);
+    HEIMDAL_MUTEX_unlock(context->mutex);
+}
+
+void KRB5_LIB_FUNCTION
+krb5_clear_error_string(krb5_context context)
+{
+    HEIMDAL_MUTEX_lock(context->mutex);
+    if (context->error_string != NULL
+	&& context->error_string != context->error_buf)
+	free(context->error_string);
+    context->error_string = NULL;
+    HEIMDAL_MUTEX_unlock(context->mutex);
+}
+
+krb5_error_code KRB5_LIB_FUNCTION
+krb5_set_error_string(krb5_context context, const char *fmt, ...)
+    __attribute__((format (printf, 2, 3)))
+{
+    krb5_error_code ret;
+    va_list ap;
+
+    va_start(ap, fmt);
+    ret = krb5_vset_error_string (context, fmt, ap);
+    va_end(ap);
+    return ret;
+}
+
+krb5_error_code KRB5_LIB_FUNCTION
+krb5_vset_error_string(krb5_context context, const char *fmt, va_list args)
+    __attribute__ ((format (printf, 2, 0)))
+{
+    krb5_clear_error_string(context);
+    HEIMDAL_MUTEX_lock(context->mutex);
+    vasprintf(&context->error_string, fmt, args);
+    if(context->error_string == NULL) {
+	vsnprintf (context->error_buf, sizeof(context->error_buf), fmt, args);
+	context->error_string = context->error_buf;
+    }
+    HEIMDAL_MUTEX_unlock(context->mutex);
+    return 0;
+}
+
+char * KRB5_LIB_FUNCTION
+krb5_get_error_string(krb5_context context)
+{
+    char *ret;
+
+    HEIMDAL_MUTEX_lock(context->mutex);
+    ret = context->error_string;
+    context->error_string = NULL;
+    HEIMDAL_MUTEX_unlock(context->mutex);
+    return ret;
+}
+
+krb5_boolean KRB5_LIB_FUNCTION
+krb5_have_error_string(krb5_context context)
+{
+    char *str;
+    HEIMDAL_MUTEX_lock(context->mutex);
+    str = context->error_string;
+    HEIMDAL_MUTEX_unlock(context->mutex);
+    return str != NULL;
+}