Add gss support from citi @ umich

[nfs-utils.git] / support / gssapi / g_imp_name.c

diff --git a/support/gssapi/g_imp_name.c b/support/gssapi/g_imp_name.c
new file mode 100644 (file)
index 0000000..43f9c50
--- /dev/null
+++ b/support/gssapi/g_imp_name.c
@@ -0,0 +1,161 @@
+/* #ident  "@(#)g_imp_name.c 1.2     96/02/06 SMI" */
+
+/*
+ * Copyright 1996 by Sun Microsystems, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software
+ * and its documentation for any purpose is hereby granted without fee,
+ * provided that the above copyright notice appears in all copies and
+ * that both that copyright notice and this permission notice appear in
+ * supporting documentation, and that the name of Sun Microsystems not be used
+ * in advertising or publicity pertaining to distribution of the software
+ * without specific, written prior permission. Sun Microsystems makes no
+ * representations about the suitability of this software for any
+ * purpose.  It is provided "as is" without express or implied warranty.
+ *
+ * SUN MICROSYSTEMS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL SUN MICROSYSTEMS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF
+ * USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+ * OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ *  glue routine gss_import_name
+ *
+ */
+
+#include "mglueP.h"
+#include <stdio.h>
+#ifdef HAVE_STDLIB_H
+#include <stdlib.h>
+#endif
+#include <string.h>
+#include <errno.h>
+
+OM_uint32 KRB5_CALLCONV
+gss_import_name(minor_status,
+                input_name_buffer,
+                input_name_type,
+                output_name)
+
+OM_uint32 *            minor_status;
+gss_buffer_t           input_name_buffer;
+gss_OID                        input_name_type;
+gss_name_t *           output_name;
+
+{
+    gss_union_name_t   union_name;
+    OM_uint32          tmp, major_status = GSS_S_FAILURE;
+    gss_OID            mech;
+
+    gss_initialize();
+
+    if (minor_status)
+       *minor_status = 0;
+
+    /* if output_name is NULL, simply return */
+
+    if(output_name == NULL)
+       return (GSS_S_COMPLETE);
+
+    *output_name = 0;
+
+    if (input_name_buffer == GSS_C_NO_BUFFER)
+       return (GSS_S_BAD_NAME);
+
+    /*
+     * First create the union name struct that will hold the external
+     * name and the name type.
+     */
+
+    union_name = (gss_union_name_t) malloc (sizeof(gss_union_name_desc));
+    if (!union_name) {
+           *minor_status = ENOMEM;
+           goto allocation_failure;
+    }
+    union_name->mech_type = 0;
+    union_name->mech_name = 0;
+    union_name->name_type = 0;
+    union_name->external_name = 0;
+    union_name->gss_mech = NULL;
+
+    /*
+     * All we do here is record the external name and name_type.
+     * When the name is actually used, the underlying gss_import_name()
+     * is called for the appropriate mechanism. Note that the name type
+     * is assumed to be constant, so only a pointer to it is stored in
+     * union_name
+     */
+    union_name->external_name =
+       (gss_buffer_t) malloc(sizeof(gss_buffer_desc));
+    if (!union_name->external_name) {
+           *minor_status = ENOMEM;
+           goto allocation_failure;
+    }
+
+    union_name->external_name->length = input_name_buffer->length;
+    /* we malloc length+1 to stick a NULL on the end, just in case */
+    /* Note that this NULL is not included in ->length for a reason! */
+    union_name->external_name->value =
+       (void  *) malloc(input_name_buffer->length+1);
+    if (!union_name->external_name->value) {
+       *minor_status = ENOMEM;
+       goto allocation_failure;
+    }
+
+    memcpy(union_name->external_name->value, input_name_buffer->value,
+          input_name_buffer->length);
+
+    /* add NULL to end of external_name->value, just in case... */
+    ((char *)union_name->external_name->value)
+                               [input_name_buffer->length] = '\0';
+
+    major_status = generic_gss_copy_oid(minor_status, input_name_type,
+                                       &union_name->name_type);
+    if (major_status != GSS_S_COMPLETE)
+       goto allocation_failure;
+
+    /*
+     * See if this is a mechanism-specific name.  If so, let's import
+     * it now so we can get any error messages, and to avoid trouble
+     * later...
+     */
+    mech = gss_find_mechanism_from_name_type(input_name_type);
+    if (mech) {
+       major_status = generic_gss_copy_oid(minor_status, mech,
+                                           &union_name->mech_type);
+       if (major_status != GSS_S_COMPLETE)
+           goto allocation_failure;
+
+       major_status = __gss_import_internal_name(minor_status, mech,
+                                                 union_name,
+                                                 &union_name->mech_name);
+       if (major_status)
+           goto allocation_failure;
+    }
+
+    *output_name = (gss_name_t) union_name;
+
+    return(GSS_S_COMPLETE);
+
+allocation_failure:
+    if (union_name) {
+       if (union_name->external_name) {
+           if (union_name->external_name->value)
+               free(union_name->external_name->value);
+           free(union_name->external_name);
+       }
+       if (union_name->name_type)
+           generic_gss_release_oid(&tmp, &union_name->name_type);
+       if (union_name->mech_name)
+           __gss_release_internal_name(minor_status, union_name->mech_type,
+                                       &union_name->mech_name);
+       if (union_name->mech_type)
+           generic_gss_release_oid(&tmp, &union_name->mech_type);
+       free(union_name);
+    }
+    return (major_status);
+}