www.project-moonshot.org Git - mech_eap.orig/blob - util_cred.c

   1 /*
   2  * Copyright (c) 2010, JANET(UK)
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  *
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  *
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * 3. Neither the name of JANET(UK) nor the names of its contributors
  17  *    may be used to endorse or promote products derived from this software
  18  *    without specific prior written permission.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
  21  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  23  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
  24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  30  * SUCH DAMAGE.
  31  */
  32
  33 #include "gssapiP_eap.h"
  34
  35 OM_uint32
  36 gssEapAllocCred(OM_uint32 *minor, gss_cred_id_t *pCred)
  37 {
  38     OM_uint32 tmpMinor;
  39     gss_cred_id_t cred;
  40
  41     assert(*pCred == GSS_C_NO_CREDENTIAL);
  42
  43     cred = (gss_cred_id_t)GSSEAP_CALLOC(1, sizeof(*cred));
  44     if (cred == NULL) {
  45         *minor = ENOMEM;
  46         return GSS_S_FAILURE;
  47     }
  48
  49     if (GSSEAP_MUTEX_INIT(&cred->mutex) != 0) {
  50         *minor = errno;
  51         gssEapReleaseCred(&tmpMinor, &cred);
  52         return GSS_S_FAILURE;
  53     }
  54
  55     *pCred = cred;
  56
  57     *minor = 0;
  58     return GSS_S_COMPLETE;
  59 }
  60
  61 OM_uint32
  62 gssEapReleaseCred(OM_uint32 *minor, gss_cred_id_t *pCred)
  63 {
  64     OM_uint32 tmpMinor;
  65     gss_cred_id_t cred = *pCred;
  66
  67     if (cred == GSS_C_NO_CREDENTIAL) {
  68         return GSS_S_COMPLETE;
  69     }
  70
  71     gssEapReleaseName(&tmpMinor, &cred->name);
  72
  73     if (cred->password.value != NULL) {
  74         memset(cred->password.value, 0, cred->password.length);
  75         GSSEAP_FREE(cred->password.value);
  76     }
  77
  78     GSSEAP_MUTEX_DESTROY(&cred->mutex);
  79     memset(cred, 0, sizeof(*cred));
  80     GSSEAP_FREE(cred);
  81     *pCred = NULL;
  82
  83     *minor = 0;
  84     return GSS_S_COMPLETE;
  85 }
  86
  87 OM_uint32
  88 gssEapAcquireCred(OM_uint32 *minor,
  89                   const gss_name_t desiredName,
  90                   const gss_buffer_t password,
  91                   OM_uint32 timeReq,
  92                   const gss_OID_set desiredMechs,
  93                   int credUsage,
  94                   gss_cred_id_t *pCred,
  95                   gss_OID_set *pActualMechs,
  96                   OM_uint32 *timeRec)
  97 {
  98     OM_uint32 major, tmpMinor;
  99     gss_cred_id_t cred;
 100
 101     *pCred = GSS_C_NO_CREDENTIAL;
 102
 103     major = gssEapAllocCred(minor, &cred);
 104     if (GSS_ERROR(major))
 105         goto cleanup;
 106
 107     if (desiredName != GSS_C_NO_NAME) {
 108         major = gss_duplicate_name(minor, desiredName, &cred->name);
 109         if (GSS_ERROR(major))
 110             goto cleanup;
 111     } else {
 112         cred->flags |= CRED_FLAG_DEFAULT_IDENTITY;
 113     }
 114
 115     if (password != GSS_C_NO_BUFFER) {
 116         major = duplicateBuffer(minor, password, &cred->password);
 117         if (GSS_ERROR(major))
 118             goto cleanup;
 119
 120         cred->flags |= CRED_FLAG_PASSWORD;
 121     }
 122
 123     major = gssEapValidateMechs(minor, desiredMechs);
 124     if (GSS_ERROR(major))
 125         goto cleanup;
 126
 127     major = duplicateOidSet(minor, desiredMechs, &cred->mechanisms);
 128     if (GSS_ERROR(major))
 129         goto cleanup;
 130
 131     switch (credUsage) {
 132     case GSS_C_BOTH:
 133         cred->flags |= CRED_FLAG_INITIATE | CRED_FLAG_ACCEPT;
 134         break;
 135     case GSS_C_INITIATE:
 136         cred->flags |= CRED_FLAG_INITIATE;
 137         break;
 138     case GSS_C_ACCEPT:
 139         cred->flags |= CRED_FLAG_ACCEPT;
 140         break;
 141     default:
 142         major = GSS_S_FAILURE;
 143         goto cleanup;
 144         break;
 145     }
 146
 147     if (pActualMechs != NULL) {
 148         major = duplicateOidSet(minor, cred->mechanisms, pActualMechs);
 149         if (GSS_ERROR(major))
 150             goto cleanup;
 151     }
 152
 153     if (timeRec != NULL)
 154         *timeRec = GSS_C_INDEFINITE;
 155
 156     *pCred = cred;
 157     major = GSS_S_COMPLETE;
 158
 159 cleanup:
 160     if (GSS_ERROR(major))
 161         gssEapReleaseCred(&tmpMinor, &cred);
 162
 163     return major;
 164 }