appl/ftp/ftpd/gss_userok.c

   1 /*
   2  * Copyright (c) 1998 - 2001 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. Neither the name of the Institute nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  */
  33
  34 #include "ftpd_locl.h"
  35 #include <gssapi/gssapi.h>
  36
  37 /* XXX sync with gssapi.c */
  38 struct gssapi_data {
  39     gss_ctx_id_t context_hdl;
  40     gss_name_t client_name;
  41     gss_cred_id_t delegated_cred_handle;
  42     void *mech_data;
  43 };
  44
  45 int gssapi_userok(void*, char*); /* to keep gcc happy */
  46 int gssapi_session(void*, char*); /* to keep gcc happy */
  47
  48 int
  49 gssapi_userok(void *app_data, char *username)
  50 {
  51     struct gssapi_data *data = app_data;
  52
  53     /* Yes, this logic really is inverted. */
  54     return !gss_userok(data->client_name, username);
  55 }
  56
  57 int
  58 gssapi_session(void *app_data, char *username)
  59 {
  60     struct gssapi_data *data = app_data;
  61     OM_uint32 major, minor;
  62     int ret = 0;
  63
  64     if (data->delegated_cred_handle != GSS_C_NO_CREDENTIAL) {
  65         major = gss_store_cred(&minor, data->delegated_cred_handle,
  66                                GSS_C_INITIATE, GSS_C_NO_OID,
  67                                1, 1, NULL, NULL);
  68         if (GSS_ERROR(major))
  69             ret = 1;
  70 #ifndef NO_AFS
  71         afslog(NULL, 1);
  72 #endif
  73     }
  74
  75     gss_release_cred(&minor, &data->delegated_cred_handle);
  76     return ret;
  77 }