lib/gssapi/krb5/display_status.c

   1 /*
   2  * Copyright (c) 1998, 1999 Kungliga Tekniska Högskolan
   3  * (Royal Institute of Technology, Stockholm, Sweden).
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  *
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  *
  13  * 2. Redistributions in binary form must reproduce the above copyright
  14  *    notice, this list of conditions and the following disclaimer in the
  15  *    documentation and/or other materials provided with the distribution.
  16  *
  17  * 3. All advertising materials mentioning features or use of this software
  18  *    must display the following acknowledgement:
  19  *      This product includes software developed by Kungliga Tekniska
  20  *      Högskolan and its contributors.
  21  *
  22  * 4. Neither the name of the Institute nor the names of its contributors
  23  *    may be used to endorse or promote products derived from this software
  24  *    without specific prior written permission.
  25  *
  26  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
  27  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  28  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  29  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
  30  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  31  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  32  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  33  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  34  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  35  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  36  * SUCH DAMAGE.
  37  */
  38
  39 #include "gssapi_locl.h"
  40
  41 RCSID("$Id$");
  42
  43 static char *
  44 calling_error(OM_uint32 v)
  45 {
  46     static char *msgs[] = {
  47         NULL,                   /* 0 */
  48         "A required input parameter could not be read.", /*  */
  49         "A required output parameter could not be written.", /*  */
  50         "A parameter was malformed"
  51     };
  52
  53     if (v == 0)
  54         return "";
  55     else if (v >= sizeof(msgs)/sizeof(*msgs))
  56         return "unknown calling error";
  57     else
  58         return msgs[v];
  59 }
  60
  61 static char *
  62 routine_error(OM_uint32 v)
  63 {
  64     static char *msgs[] = {
  65         NULL,                   /* 0 */
  66         "An unsupported mechanism was requested",
  67         "An invalid name was supplied",
  68         "A supplied name was of an unsupported type",
  69         "Incorrect channel bindings were supplied",
  70         "An invalid status code was supplied",
  71         "A token had an invalid MIC",
  72         "No credentials were supplied, "
  73         "or the credentials were unavailable or inaccessible.",
  74         "No context has been established",
  75         "A token was invalid",
  76         "A credential was invalid",
  77         "The referenced credentials have expired",
  78         "The context has expired",
  79         "Miscellaneous failure (see text)",
  80         "The quality-of-protection requested could not be provide",
  81         "The operation is forbidden by local security policy",
  82         "The operation or option is not available",
  83         "The requested credential element already exists",
  84         "The provided name was not a mechanism name.",
  85     };
  86
  87     if (v == 0)
  88         return "";
  89     else if (v >= sizeof(msgs)/sizeof(*msgs))
  90         return "unknown routine error";
  91     else
  92         return msgs[v];
  93 }
  94
  95 OM_uint32 gss_display_status
  96            (OM_uint32           *minor_status,
  97             OM_uint32            status_value,
  98             int                  status_type,
  99             const gss_OID        mech_type,
 100             OM_uint32           *message_context,
 101             gss_buffer_t         status_string)
 102 {
 103   char *buf;
 104
 105   gssapi_krb5_init ();
 106
 107   *minor_status = 0;
 108
 109   if (mech_type != GSS_C_NO_OID &&
 110       mech_type != GSS_KRB5_MECHANISM)
 111       return GSS_S_BAD_MECH;
 112
 113   if (status_type == GSS_C_GSS_CODE) {
 114       asprintf (&buf, "%s %s",
 115                 calling_error(GSS_CALLING_ERROR(status_value)),
 116                 routine_error(GSS_ROUTINE_ERROR(status_value)));
 117       if (buf == NULL) {
 118           *minor_status = ENOMEM;
 119           return GSS_S_FAILURE;
 120       }
 121   } else if (status_type == GSS_C_MECH_CODE) {
 122       buf = strdup(krb5_get_err_text (gssapi_krb5_context, status_value));
 123       if (buf == NULL) {
 124           *minor_status = ENOMEM;
 125           return GSS_S_FAILURE;
 126       }
 127   } else
 128       return GSS_S_BAD_STATUS;
 129
 130   *message_context = 0;
 131
 132   status_string->length = strlen(buf);
 133   status_string->value  = buf;
 134
 135   return GSS_S_COMPLETE;
 136 }