Home | History | Annotate | Download | only in lib 
      1 /***************************************************************************
      2  *                                  _   _ ____  _
      3  *  Project                     ___| | | |  _ \| |
      4  *                             / __| | | | |_) | |
      5  *                            | (__| |_| |  _ <| |___
      6  *                             \___|\___/|_| \_\_____|
      7  *
      8  * Copyright (C) 2011 - 2014, Daniel Stenberg, <daniel (at) haxx.se>, et al.
      9  *
     10  * This software is licensed as described in the file COPYING, which
     11  * you should have received as part of this distribution. The terms
     12  * are also available at http://curl.haxx.se/docs/copyright.html.
     13  *
     14  * You may opt to use, copy, modify, merge, publish, distribute and/or sell
     15  * copies of the Software, and permit persons to whom the Software is
     16  * furnished to do so, under the terms of the COPYING file.
     17  *
     18  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
     19  * KIND, either express or implied.
     20  *
     21  ***************************************************************************/
     22 
     23 #include "curl_setup.h"
     24 
     25 #ifdef HAVE_GSSAPI
     26 
     27 #include "curl_gssapi.h"
     28 #include "sendf.h"
     29 
     30 static const char spnego_oid_bytes[] = "\x2b\x06\x01\x05\x05\x02";
     31 gss_OID_desc Curl_spnego_mech_oid = { 6, &spnego_oid_bytes };
     32 static const char krb5_oid_bytes[] = "\x2a\x86\x48\x86\xf7\x12\x01\x02\x02";
     33 gss_OID_desc Curl_krb5_mech_oid = { 9, &krb5_oid_bytes };
     34 
     35 OM_uint32 Curl_gss_init_sec_context(
     36     struct SessionHandle *data,
     37     OM_uint32 *minor_status,
     38     gss_ctx_id_t *context,
     39     gss_name_t target_name,
     40     gss_OID mech_type,
     41     gss_channel_bindings_t input_chan_bindings,
     42     gss_buffer_t input_token,
     43     gss_buffer_t output_token,
     44     const bool mutual_auth,
     45     OM_uint32 *ret_flags)
     46 {
     47   OM_uint32 req_flags = GSS_C_REPLAY_FLAG;
     48 
     49   if(mutual_auth)
     50     req_flags |= GSS_C_MUTUAL_FLAG;
     51 
     52   if(data->set.gssapi_delegation & CURLGSSAPI_DELEGATION_POLICY_FLAG) {
     53 #ifdef GSS_C_DELEG_POLICY_FLAG
     54     req_flags |= GSS_C_DELEG_POLICY_FLAG;
     55 #else
     56     infof(data, "warning: support for CURLGSSAPI_DELEGATION_POLICY_FLAG not "
     57         "compiled in\n");
     58 #endif
     59   }
     60 
     61   if(data->set.gssapi_delegation & CURLGSSAPI_DELEGATION_FLAG)
     62     req_flags |= GSS_C_DELEG_FLAG;
     63 
     64   return gss_init_sec_context(minor_status,
     65                               GSS_C_NO_CREDENTIAL, /* cred_handle */
     66                               context,
     67                               target_name,
     68                               mech_type,
     69                               req_flags,
     70                               0, /* time_req */
     71                               input_chan_bindings,
     72                               input_token,
     73                               NULL, /* actual_mech_type */
     74                               output_token,
     75                               ret_flags,
     76                               NULL /* time_rec */);
     77 }
     78 
     79 /*
     80  * Curl_gss_log_error()
     81  *
     82  * This is used to log a GSS-API error status.
     83  *
     84  * Parameters:
     85  *
     86  * data    [in] - The session handle.
     87  * status  [in] - The status code.
     88  * prefix  [in] - The prefix of the log message.
     89  */
     90 void Curl_gss_log_error(struct SessionHandle *data, OM_uint32 status,
     91                         const char *prefix)
     92 {
     93   OM_uint32 maj_stat;
     94   OM_uint32 min_stat;
     95   OM_uint32 msg_ctx = 0;
     96   gss_buffer_desc status_string;
     97   char buf[1024];
     98   size_t len;
     99 
    100   snprintf(buf, sizeof(buf), "%s", prefix);
    101   len = strlen(buf);
    102   do {
    103     maj_stat = gss_display_status(&min_stat,
    104                                   status,
    105                                   GSS_C_MECH_CODE,
    106                                   GSS_C_NO_OID,
    107                                   &msg_ctx,
    108                                   &status_string);
    109     if(sizeof(buf) > len + status_string.length + 1) {
    110       snprintf(buf + len, sizeof(buf) - len,
    111         ": %s", (char*)status_string.value);
    112       len += status_string.length;
    113     }
    114     gss_release_buffer(&min_stat, &status_string);
    115   } while(!GSS_ERROR(maj_stat) && msg_ctx != 0);
    116 
    117   infof(data, "%s\n", buf);
    118 }
    119 
    120 #endif /* HAVE_GSSAPI */
    121