support/gssapi/g_imp_name.c

   1 /* #ident  "@(#)g_imp_name.c 1.2     96/02/06 SMI" */
   2
   3 /*
   4  * Copyright 1996 by Sun Microsystems, Inc.
   5  *
   6  * Permission to use, copy, modify, distribute, and sell this software
   7  * and its documentation for any purpose is hereby granted without fee,
   8  * provided that the above copyright notice appears in all copies and
   9  * that both that copyright notice and this permission notice appear in
  10  * supporting documentation, and that the name of Sun Microsystems not be used
  11  * in advertising or publicity pertaining to distribution of the software
  12  * without specific, written prior permission. Sun Microsystems makes no
  13  * representations about the suitability of this software for any
  14  * purpose.  It is provided "as is" without express or implied warranty.
  15  *
  16  * SUN MICROSYSTEMS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
  17  * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
  18  * EVENT SHALL SUN MICROSYSTEMS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
  19  * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF
  20  * USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
  21  * OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
  22  * PERFORMANCE OF THIS SOFTWARE.
  23  */
  24
  25 /*
  26  *  glue routine gss_import_name
  27  *
  28  */
  29
  30 #include "mglueP.h"
  31 #include <stdio.h>
  32 #ifdef HAVE_STDLIB_H
  33 #include <stdlib.h>
  34 #endif
  35 #include <string.h>
  36 #include <errno.h>
  37
  38 OM_uint32 KRB5_CALLCONV
  39 gss_import_name(minor_status,
  40                 input_name_buffer,
  41                 input_name_type,
  42                 output_name)
  43
  44 OM_uint32 *             minor_status;
  45 gss_buffer_t            input_name_buffer;
  46 gss_OID                 input_name_type;
  47 gss_name_t *            output_name;
  48
  49 {
  50     gss_union_name_t    union_name;
  51     OM_uint32           tmp, major_status = GSS_S_FAILURE;
  52     gss_OID             mech;
  53
  54     gss_initialize();
  55
  56     if (minor_status)
  57         *minor_status = 0;
  58
  59     /* if output_name is NULL, simply return */
  60
  61     if(output_name == NULL)
  62         return (GSS_S_COMPLETE);
  63
  64     *output_name = 0;
  65
  66     if (input_name_buffer == GSS_C_NO_BUFFER)
  67         return (GSS_S_BAD_NAME);
  68
  69     /*
  70      * First create the union name struct that will hold the external
  71      * name and the name type.
  72      */
  73
  74     union_name = (gss_union_name_t) malloc (sizeof(gss_union_name_desc));
  75     if (!union_name) {
  76             *minor_status = ENOMEM;
  77             goto allocation_failure;
  78     }
  79     union_name->mech_type = 0;
  80     union_name->mech_name = 0;
  81     union_name->name_type = 0;
  82     union_name->external_name = 0;
  83     union_name->gss_mech = NULL;
  84
  85     /*
  86      * All we do here is record the external name and name_type.
  87      * When the name is actually used, the underlying gss_import_name()
  88      * is called for the appropriate mechanism. Note that the name type
  89      * is assumed to be constant, so only a pointer to it is stored in
  90      * union_name
  91      */
  92     union_name->external_name =
  93         (gss_buffer_t) malloc(sizeof(gss_buffer_desc));
  94     if (!union_name->external_name) {
  95             *minor_status = ENOMEM;
  96             goto allocation_failure;
  97     }
  98
  99     union_name->external_name->length = input_name_buffer->length;
 100     /* we malloc length+1 to stick a NULL on the end, just in case */
 101     /* Note that this NULL is not included in ->length for a reason! */
 102     union_name->external_name->value =
 103         (void  *) malloc(input_name_buffer->length+1);
 104     if (!union_name->external_name->value) {
 105         *minor_status = ENOMEM;
 106         goto allocation_failure;
 107     }
 108
 109     memcpy(union_name->external_name->value, input_name_buffer->value,
 110            input_name_buffer->length);
 111
 112     /* add NULL to end of external_name->value, just in case... */
 113     ((char *)union_name->external_name->value)
 114                                 [input_name_buffer->length] = '\0';
 115
 116     major_status = generic_gss_copy_oid(minor_status, input_name_type,
 117                                         &union_name->name_type);
 118     if (major_status != GSS_S_COMPLETE)
 119         goto allocation_failure;
 120
 121     /*
 122      * See if this is a mechanism-specific name.  If so, let's import
 123      * it now so we can get any error messages, and to avoid trouble
 124      * later...
 125      */
 126     mech = gss_find_mechanism_from_name_type(input_name_type);
 127     if (mech) {
 128         major_status = generic_gss_copy_oid(minor_status, mech,
 129                                             &union_name->mech_type);
 130         if (major_status != GSS_S_COMPLETE)
 131             goto allocation_failure;
 132
 133         major_status = __gss_import_internal_name(minor_status, mech,
 134                                                   union_name,
 135                                                   &union_name->mech_name);
 136         if (major_status)
 137             goto allocation_failure;
 138     }
 139
 140     *output_name = (gss_name_t) union_name;
 141
 142     return(GSS_S_COMPLETE);
 143
 144 allocation_failure:
 145     if (union_name) {
 146         if (union_name->external_name) {
 147             if (union_name->external_name->value)
 148                 free(union_name->external_name->value);
 149             free(union_name->external_name);
 150         }
 151         if (union_name->name_type)
 152             generic_gss_release_oid(&tmp, &union_name->name_type);
 153         if (union_name->mech_name)
 154             __gss_release_internal_name(minor_status, union_name->mech_type,
 155                                         &union_name->mech_name);
 156         if (union_name->mech_type)
 157             generic_gss_release_oid(&tmp, &union_name->mech_type);
 158         free(union_name);
 159     }
 160     return (major_status);
 161 }