gssd/svcgssd: add support to retrieve actual context expiration

[nfs-utils.git] / utils / gssd / context_heimdal.c

diff --git a/utils/gssd/context_heimdal.c b/utils/gssd/context_heimdal.c
index 27c44a32c50b758f73a38943228f8e7344e2ff78..fc241e3a2192bb9d31a4590cb2ab745f95207c67 100644 (file)
--- a/utils/gssd/context_heimdal.c
+++ b/utils/gssd/context_heimdal.c
@@ -1,5 +1,5 @@
 /*
-  Copyright (c) 2004 The Regents of the University of Michigan.
+  Copyright (c) 2004-2006 The Regents of the University of Michigan.
   All rights reserved.
 
   Redistribution and use in source and binary forms, with or without
@@ -30,6 +30,7 @@
 
 #include "config.h"
 
+#ifndef HAVE_LUCID_CONTEXT_SUPPORT
 #ifdef HAVE_HEIMDAL
 
 #include <stdio.h>
@@ -37,15 +38,15 @@
 #include <syslog.h>
 #include <string.h>
 #include <errno.h>
-#include <gssapi.h>
 #include <krb5.h>
+#include <gssapi.h>    /* Must use the heimdal copy! */
+#ifdef HAVE_COM_ERR_H
 #include <com_err.h>
+#endif
 #include "err_util.h"
 #include "gss_oids.h"
 #include "write_bytes.h"
 
-#define MAX_CTX_LEN 4096
-
 int write_heimdal_keyblock(char **p, char *end, krb5_keyblock *key)
 {
        gss_buffer_desc tmp;
@@ -71,27 +72,32 @@ int write_heimdal_enc_key(char **p, char *end, gss_ctx_id_t ctx)
 
        if ((ret = krb5_init_context(&context))) {
                printerr(0, "ERROR: initializing krb5_context: %s\n",
-                       error_message(ret));
+                       gssd_k5_err_msg(NULL, ret));
                goto out_err;
        }
 
        if ((ret = krb5_auth_con_getlocalsubkey(context,
                                                ctx->auth_context, &key))){
                printerr(0, "ERROR: getting auth_context key: %s\n",
-                       error_message(ret));
+                       gssd_k5_err_msg(context, ret));
                goto out_err_free_context;
        }
 
        memset(&enc_key, 0, sizeof(enc_key));
-       printerr(1, "WARN: write_heimdal_enc_key: "
-                   "overriding heimdal keytype\n");
-       enc_key.keytype = 4 /* XXX XXX XXX XXX key->keytype */;
+       enc_key.keytype = key->keytype;
+       /* XXX current kernel code only handles des-cbc-raw  (4) */
+       if (enc_key.keytype != 4) {
+               printerr(1, "WARN: write_heimdal_enc_key: "
+                           "overriding heimdal keytype (%d => %d)\n",
+                        enc_key.keytype, 4);
+               enc_key.keytype = 4;
+       }
        enc_key.keyvalue.length = key->keyvalue.length;
        if ((enc_key.keyvalue.data =
                                calloc(1, enc_key.keyvalue.length)) == NULL) {
 
                printerr(0, "ERROR: allocating memory for enc key: %s\n",
-                       error_message(ENOMEM));
+                       gssd_k5_err_msg(context, ENOMEM));
                goto out_err_free_key;
        }
        skd = (char *) key->keyvalue.data;
@@ -124,20 +130,24 @@ int write_heimdal_seq_key(char **p, char *end, gss_ctx_id_t ctx)
 
        if ((ret = krb5_init_context(&context))) {
                printerr(0, "ERROR: initializing krb5_context: %s\n",
-                       error_message(ret));
+                       gssd_k5_err_msg(NULL, ret));
                goto out_err;
        }
 
        if ((ret = krb5_auth_con_getlocalsubkey(context,
                                                ctx->auth_context, &key))){
                printerr(0, "ERROR: getting auth_context key: %s\n",
-                       error_message(ret));
+                       gssd_k5_err_msg(context, ret));
                goto out_err_free_context;
        }
 
-       printerr(1, "WARN: write_heimdal_seq_key: "
-                   "overriding heimdal keytype\n");
-       key->keytype = 4;       /* XXX XXX XXX XXX XXX */
+       /* XXX current kernel code only handles des-cbc-raw  (4) */
+       if (key->keytype != 4) {
+               printerr(1, "WARN: write_heimdal_seq_key: "
+                           "overriding heimdal keytype (%d => %d)\n",
+                        key->keytype, 4);
+               key->keytype = 4;
+       }
 
        if (write_heimdal_keyblock(p, end, key)) {
                goto out_err_free_key;
@@ -188,7 +198,7 @@ int write_heimdal_seq_key(char **p, char *end, gss_ctx_id_t ctx)
  */
 
 int
-serialize_krb5_ctx(gss_ctx_id_t ctx, gss_buffer_desc *buf)
+serialize_krb5_ctx(gss_ctx_id_t ctx, gss_buffer_desc *buf, int32_t *endtime)
 {
 
        char *p, *end;
@@ -229,6 +239,9 @@ serialize_krb5_ctx(gss_ctx_id_t ctx, gss_buffer_desc *buf)
        /* endtime */
        if (WRITE_BYTES(&p, end, ctx->lifetime)) goto out_err;
 
+       if (endtime)
+               *endtime = ctx->lifetime;
+
        /* seq_send */
        if (WRITE_BYTES(&p, end, ctx->auth_context->local_seqnumber))
                goto out_err;
@@ -254,3 +267,4 @@ out_err:
 }
 
 #endif /* HAVE_HEIMDAL */
+#endif /* HAVE_LUCID_CONTEXT_SUPPORT */