lib/gssapi/ntlm/iter_cred.c

   1 /*
   2  * Copyright (c) 2006 Kungliga Tekniska Högskolan
   3  * (Royal Institute of Technology, Stockholm, Sweden).
   4  * All rights reserved.
   5  *
   6  * Portions Copyright (c) 2009 Apple Inc. All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  *
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  *
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * 3. Neither the name of the Institute nor the names of its contributors
  20  *    may be used to endorse or promote products derived from this software
  21  *    without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
  24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
  27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  33  * SUCH DAMAGE.
  34  */
  35
  36 #include "ntlm.h"
  37
  38 void GSSAPI_CALLCONV
  39 _gss_ntlm_iter_creds_f(OM_uint32 flags,
  40                        void *userctx ,
  41                        void (*cred_iter)(void *, gss_OID, gss_cred_id_t))
  42 {
  43 #ifdef HAVE_KCM
  44     krb5_error_code ret;
  45     krb5_context context = NULL;
  46     krb5_storage *request, *response;
  47     krb5_data response_data;
  48
  49     ret = krb5_init_context(&context);
  50     if (ret)
  51         goto done;
  52
  53     ret = krb5_kcm_storage_request(context, KCM_OP_GET_NTLM_USER_LIST, &request);
  54     if (ret)
  55         goto done;
  56
  57     ret = krb5_kcm_call(context, request, &response, &response_data);
  58     krb5_storage_free(request);
  59     if (ret)
  60         goto done;
  61
  62     while (1) {
  63         uint32_t morep;
  64         char *user = NULL, *domain = NULL;
  65         ntlm_cred dn;
  66
  67         ret = krb5_ret_uint32(response, &morep);
  68         if (ret) goto out;
  69
  70         if (!morep) goto out;
  71
  72         ret = krb5_ret_stringz(response, &user);
  73         if (ret) goto out;
  74         ret = krb5_ret_stringz(response, &domain);
  75         if (ret) {
  76             free(user);
  77             goto out;
  78         }
  79
  80         dn = calloc(1, sizeof(*dn));
  81         if (dn == NULL) {
  82             free(user);
  83             free(domain);
  84             goto out;
  85         }
  86         dn->username = user;
  87         dn->domain = domain;
  88
  89         cred_iter(userctx, GSS_NTLM_MECHANISM, (gss_cred_id_t)dn);
  90     }
  91  out:
  92     krb5_storage_free(response);
  93     krb5_data_free(&response_data);
  94  done:
  95     if (context)
  96         krb5_free_context(context);
  97 #endif /* HAVE_KCM */
  98     (*cred_iter)(userctx, NULL, NULL);
  99 }