1 files changed, 251 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..17bc30572b
--- /dev/null
+++ b/source4/heimdal/lib/krb5/error_string.c
@@ -0,0 +1,251 @@
+/*
+ * Copyright (c) 2001, 2003, 2005 - 2006 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("$Id$");
+
+#undef __attribute__
+#define __attribute__(X)
+
+void KRB5_LIB_FUNCTION
+krb5_clear_error_string(krb5_context context)
+{
+    HEIMDAL_MUTEX_lock(context->mutex);
+    if (context->error_string)
+	free(context->error_string);
+    context->error_code = 0;
+    context->error_string = NULL;
+    HEIMDAL_MUTEX_unlock(context->mutex);
+}
+
+/**
+ * Set the context full error string for a specific error code.
+ *
+ * @param context Kerberos 5 context
+ * @param ret The error code
+ * @param fmt Error string for the error code
+ * @param ... printf(3) style parameters.
+ *
+ * @ingroup krb5_error
+ */
+
+void KRB5_LIB_FUNCTION
+krb5_set_error_message(krb5_context context, krb5_error_code ret,
+		       const char *fmt, ...)
+    __attribute__ ((format (printf, 3, 4)))
+{
+    va_list ap;
+
+    va_start(ap, fmt);
+    krb5_vset_error_message (context, ret, fmt, ap);
+    va_end(ap);
+}
+
+/**
+ * Set the context full error string for a specific error code.
+ *
+ * @param context Kerberos 5 context
+ * @param ret The error code
+ * @param fmt Error string for the error code
+ * @param args printf(3) style parameters.
+ *
+ * @ingroup krb5_error
+ */
+
+
+void KRB5_LIB_FUNCTION
+krb5_vset_error_message (krb5_context context, krb5_error_code ret,
+			 const char *fmt, va_list args)
+    __attribute__ ((format (printf, 3, 0)))
+{
+
+    krb5_clear_error_string(context);
+    HEIMDAL_MUTEX_lock(context->mutex);
+    context->error_code = ret;
+    vasprintf(&context->error_string, fmt, args);
+    HEIMDAL_MUTEX_unlock(context->mutex);
+}
+
+
+/**
+ * Return the error message in context. On error or no error string,
+ * the function returns NULL.
+ *
+ * @param context Kerberos 5 context
+ *
+ * @return an error string, needs to be freed with
+ * krb5_free_error_message(). The functions return NULL on error.
+ *
+ * @ingroup krb5_error
+ */
+
+char * KRB5_LIB_FUNCTION
+krb5_get_error_string(krb5_context context)
+{
+    char *ret = NULL;
+
+    HEIMDAL_MUTEX_lock(context->mutex);
+    if (context->error_string)
+	ret = strdup(context->error_string);
+    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;
+}
+
+/**
+ * Return the error message for `code' in context. On memory
+ * allocation error the function returns NULL.
+ *
+ * @param context Kerberos 5 context
+ * @param code Error code related to the error
+ *
+ * @return an error string, needs to be freed with
+ * krb5_free_error_message(). The functions return NULL on error.
+ *
+ * @ingroup krb5_error
+ */
+
+const char * KRB5_LIB_FUNCTION
+krb5_get_error_message(krb5_context context, krb5_error_code code)
+{
+    const char *cstr;
+    char *str;
+
+    HEIMDAL_MUTEX_lock(context->mutex);
+    if (context->error_string && 
+	(code == context->error_code || context->error_code == 0))
+    {
+	str = strdup(context->error_string);
+	if (str) {
+	    HEIMDAL_MUTEX_unlock(context->mutex);
+	    return str;
+	}
+    }
+    HEIMDAL_MUTEX_unlock(context->mutex);
+
+    cstr = krb5_get_err_text(context, code);
+    if (cstr)
+	return strdup(cstr);
+
+    if (asprintf(&str, "<unknown error: %d>", (int)code) == -1)
+	return NULL;
+
+    return str;
+}
+
+
+/**
+ * Free the error message returned by krb5_get_error_message().
+ *
+ * @param context Kerberos context
+ * @param msg error message to free, returned byg
+ *        krb5_get_error_message().
+ *
+ * @ingroup krb5_error
+ */
+
+void KRB5_LIB_FUNCTION
+krb5_free_error_message(krb5_context context, const char *msg)
+{
+    free(rk_UNCONST(msg));
+}
+
+#ifndef HEIMDAL_SMALLER
+
+/**
+ * Free the error message returned by krb5_get_error_string(),
+ * deprecated, use krb5_free_error_message().
+ *
+ * @param context Kerberos context
+ * @param msg error message to free
+ *
+ * @ingroup krb5_deprecated
+ */
+
+void KRB5_LIB_FUNCTION __attribute__((deprecated))
+krb5_free_error_string(krb5_context context, char *str)
+{
+    krb5_free_error_message(context, str);
+}
+
+/**
+ * Set the error message returned by krb5_get_error_string(),
+ * deprecated, use krb5_set_error_message().
+ *
+ * @param context Kerberos context
+ * @param msg error message to free
+ *
+ * @ingroup krb5_deprecated
+ */
+
+krb5_error_code KRB5_LIB_FUNCTION
+krb5_set_error_string(krb5_context context, const char *fmt, ...)
+    __attribute__((format (printf, 2, 3))) __attribute__((deprecated))
+{
+    va_list ap;
+
+    va_start(ap, fmt);
+    krb5_vset_error_message (context, 0, fmt, ap);
+    va_end(ap);
+    return 0;
+}
+
+/**
+ * Set the error message returned by krb5_get_error_string(),
+ * deprecated, use krb5_set_error_message().
+ *
+ * @param context Kerberos context
+ * @param msg error message to free
+ *
+ * @ingroup krb5_deprecated
+ */
+
+krb5_error_code KRB5_LIB_FUNCTION
+krb5_vset_error_string(krb5_context context, const char *fmt, va_list args)
+    __attribute__ ((format (printf, 2, 0))) __attribute__((deprecated))
+{
+    krb5_vset_error_message(context, 0, fmt, args);
+    return 0;
+}
+
+#endif /* !HEIMDAL_SMALLER */