1/*************************************************************************** 2 * _ _ ____ _ 3 * Project ___| | | | _ \| | 4 * / __| | | | |_) | | 5 * | (__| |_| | _ <| |___ 6 * \___|\___/|_| \_\_____| 7 * 8 * Copyright (C) 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.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 * SPDX-License-Identifier: curl 22 * 23 ***************************************************************************/ 24 25#include "curl_setup.h" 26 27#ifdef HAVE_GSSAPI 28 29#include "curl_gssapi.h" 30#include "sendf.h" 31 32/* The last 3 #include files should be in this order */ 33#include "curl_printf.h" 34#include "curl_memory.h" 35#include "memdebug.h" 36 37#if defined(__GNUC__) 38#define CURL_ALIGN8 __attribute__ ((aligned(8))) 39#else 40#define CURL_ALIGN8 41#endif 42 43gss_OID_desc Curl_spnego_mech_oid CURL_ALIGN8 = { 44 6, (char *)"\x2b\x06\x01\x05\x05\x02" 45}; 46gss_OID_desc Curl_krb5_mech_oid CURL_ALIGN8 = { 47 9, (char *)"\x2a\x86\x48\x86\xf7\x12\x01\x02\x02" 48}; 49 50OM_uint32 Curl_gss_init_sec_context( 51 struct Curl_easy *data, 52 OM_uint32 *minor_status, 53 gss_ctx_id_t *context, 54 gss_name_t target_name, 55 gss_OID mech_type, 56 gss_channel_bindings_t input_chan_bindings, 57 gss_buffer_t input_token, 58 gss_buffer_t output_token, 59 const bool mutual_auth, 60 OM_uint32 *ret_flags) 61{ 62 OM_uint32 req_flags = GSS_C_REPLAY_FLAG; 63 64 if(mutual_auth) 65 req_flags |= GSS_C_MUTUAL_FLAG; 66 67 if(data->set.gssapi_delegation & CURLGSSAPI_DELEGATION_POLICY_FLAG) { 68#ifdef GSS_C_DELEG_POLICY_FLAG 69 req_flags |= GSS_C_DELEG_POLICY_FLAG; 70#else 71 infof(data, "WARNING: support for CURLGSSAPI_DELEGATION_POLICY_FLAG not " 72 "compiled in"); 73#endif 74 } 75 76 if(data->set.gssapi_delegation & CURLGSSAPI_DELEGATION_FLAG) 77 req_flags |= GSS_C_DELEG_FLAG; 78 79 return gss_init_sec_context(minor_status, 80 GSS_C_NO_CREDENTIAL, /* cred_handle */ 81 context, 82 target_name, 83 mech_type, 84 req_flags, 85 0, /* time_req */ 86 input_chan_bindings, 87 input_token, 88 NULL, /* actual_mech_type */ 89 output_token, 90 ret_flags, 91 NULL /* time_rec */); 92} 93 94#define GSS_LOG_BUFFER_LEN 1024 95static size_t display_gss_error(OM_uint32 status, int type, 96 char *buf, size_t len) { 97 OM_uint32 maj_stat; 98 OM_uint32 min_stat; 99 OM_uint32 msg_ctx = 0; 100 gss_buffer_desc status_string = GSS_C_EMPTY_BUFFER; 101 102 do { 103 maj_stat = gss_display_status(&min_stat, 104 status, 105 type, 106 GSS_C_NO_OID, 107 &msg_ctx, 108 &status_string); 109 if(maj_stat == GSS_S_COMPLETE && status_string.length > 0) { 110 if(GSS_LOG_BUFFER_LEN > len + status_string.length + 3) { 111 len += msnprintf(buf + len, GSS_LOG_BUFFER_LEN - len, 112 "%.*s. ", (int)status_string.length, 113 (char *)status_string.value); 114 } 115 } 116 gss_release_buffer(&min_stat, &status_string); 117 } while(!GSS_ERROR(maj_stat) && msg_ctx); 118 119 return len; 120} 121 122/* 123 * Curl_gss_log_error() 124 * 125 * This is used to log a GSS-API error status. 126 * 127 * Parameters: 128 * 129 * data [in] - The session handle. 130 * prefix [in] - The prefix of the log message. 131 * major [in] - The major status code. 132 * minor [in] - The minor status code. 133 */ 134void Curl_gss_log_error(struct Curl_easy *data, const char *prefix, 135 OM_uint32 major, OM_uint32 minor) 136{ 137 char buf[GSS_LOG_BUFFER_LEN]; 138 size_t len = 0; 139 140 if(major != GSS_S_FAILURE) 141 len = display_gss_error(major, GSS_C_GSS_CODE, buf, len); 142 143 display_gss_error(minor, GSS_C_MECH_CODE, buf, len); 144 145 infof(data, "%s%s", prefix, buf); 146#ifdef CURL_DISABLE_VERBOSE_STRINGS 147 (void)data; 148 (void)prefix; 149#endif 150} 151 152#endif /* HAVE_GSSAPI */ 153