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Annotation of embedaddon/curl/lib/curl_gssapi.c, revision 1.1.1.1

1.1       misho       1: /***************************************************************************
                      2:  *                                  _   _ ____  _
                      3:  *  Project                     ___| | | |  _ \| |
                      4:  *                             / __| | | | |_) | |
                      5:  *                            | (__| |_| |  _ <| |___
                      6:  *                             \___|\___/|_| \_\_____|
                      7:  *
                      8:  * Copyright (C) 2011 - 2018, Daniel Stenberg, <daniel@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 https://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: /* The last 3 #include files should be in this order */
                     31: #include "curl_printf.h"
                     32: #include "curl_memory.h"
                     33: #include "memdebug.h"
                     34: 
                     35: static char spnego_oid_bytes[] = "\x2b\x06\x01\x05\x05\x02";
                     36: gss_OID_desc Curl_spnego_mech_oid = { 6, &spnego_oid_bytes };
                     37: static char krb5_oid_bytes[] = "\x2a\x86\x48\x86\xf7\x12\x01\x02\x02";
                     38: gss_OID_desc Curl_krb5_mech_oid = { 9, &krb5_oid_bytes };
                     39: 
                     40: OM_uint32 Curl_gss_init_sec_context(
                     41:     struct Curl_easy *data,
                     42:     OM_uint32 *minor_status,
                     43:     gss_ctx_id_t *context,
                     44:     gss_name_t target_name,
                     45:     gss_OID mech_type,
                     46:     gss_channel_bindings_t input_chan_bindings,
                     47:     gss_buffer_t input_token,
                     48:     gss_buffer_t output_token,
                     49:     const bool mutual_auth,
                     50:     OM_uint32 *ret_flags)
                     51: {
                     52:   OM_uint32 req_flags = GSS_C_REPLAY_FLAG;
                     53: 
                     54:   if(mutual_auth)
                     55:     req_flags |= GSS_C_MUTUAL_FLAG;
                     56: 
                     57:   if(data->set.gssapi_delegation & CURLGSSAPI_DELEGATION_POLICY_FLAG) {
                     58: #ifdef GSS_C_DELEG_POLICY_FLAG
                     59:     req_flags |= GSS_C_DELEG_POLICY_FLAG;
                     60: #else
                     61:     infof(data, "warning: support for CURLGSSAPI_DELEGATION_POLICY_FLAG not "
                     62:         "compiled in\n");
                     63: #endif
                     64:   }
                     65: 
                     66:   if(data->set.gssapi_delegation & CURLGSSAPI_DELEGATION_FLAG)
                     67:     req_flags |= GSS_C_DELEG_FLAG;
                     68: 
                     69:   return gss_init_sec_context(minor_status,
                     70:                               GSS_C_NO_CREDENTIAL, /* cred_handle */
                     71:                               context,
                     72:                               target_name,
                     73:                               mech_type,
                     74:                               req_flags,
                     75:                               0, /* time_req */
                     76:                               input_chan_bindings,
                     77:                               input_token,
                     78:                               NULL, /* actual_mech_type */
                     79:                               output_token,
                     80:                               ret_flags,
                     81:                               NULL /* time_rec */);
                     82: }
                     83: 
                     84: #define GSS_LOG_BUFFER_LEN 1024
                     85: static size_t display_gss_error(OM_uint32 status, int type,
                     86:                                 char *buf, size_t len) {
                     87:   OM_uint32 maj_stat;
                     88:   OM_uint32 min_stat;
                     89:   OM_uint32 msg_ctx = 0;
                     90:   gss_buffer_desc status_string;
                     91: 
                     92:   do {
                     93:     maj_stat = gss_display_status(&min_stat,
                     94:                                   status,
                     95:                                   type,
                     96:                                   GSS_C_NO_OID,
                     97:                                   &msg_ctx,
                     98:                                   &status_string);
                     99:     if(GSS_LOG_BUFFER_LEN > len + status_string.length + 3) {
                    100:       len += msnprintf(buf + len, GSS_LOG_BUFFER_LEN - len,
                    101:                        "%.*s. ", (int)status_string.length,
                    102:                        (char *)status_string.value);
                    103:     }
                    104:     gss_release_buffer(&min_stat, &status_string);
                    105:   } while(!GSS_ERROR(maj_stat) && msg_ctx != 0);
                    106: 
                    107:   return len;
                    108: }
                    109: 
                    110: /*
                    111:  * Curl_gss_log_error()
                    112:  *
                    113:  * This is used to log a GSS-API error status.
                    114:  *
                    115:  * Parameters:
                    116:  *
                    117:  * data    [in] - The session handle.
                    118:  * prefix  [in] - The prefix of the log message.
                    119:  * major   [in] - The major status code.
                    120:  * minor   [in] - The minor status code.
                    121:  */
                    122: void Curl_gss_log_error(struct Curl_easy *data, const char *prefix,
                    123:                         OM_uint32 major, OM_uint32 minor)
                    124: {
                    125:   char buf[GSS_LOG_BUFFER_LEN];
                    126:   size_t len = 0;
                    127: 
                    128:   if(major != GSS_S_FAILURE)
                    129:     len = display_gss_error(major, GSS_C_GSS_CODE, buf, len);
                    130: 
                    131:   display_gss_error(minor, GSS_C_MECH_CODE, buf, len);
                    132: 
                    133:   infof(data, "%s%s\n", prefix, buf);
                    134: }
                    135: 
                    136: #endif /* HAVE_GSSAPI */