curl_gssapi.c 4.5 KB

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  1. /***************************************************************************
  2. * _ _ ____ _
  3. * Project ___| | | | _ \| |
  4. * / __| | | | |_) | |
  5. * | (__| |_| | _ <| |___
  6. * \___|\___/|_| \_\_____|
  7. *
  8. * Copyright (C) 2011 - 2022, 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. #include "curl_setup.h"
  25. #ifdef HAVE_GSSAPI
  26. #include "curl_gssapi.h"
  27. #include "sendf.h"
  28. /* The last 3 #include files should be in this order */
  29. #include "curl_printf.h"
  30. #include "curl_memory.h"
  31. #include "memdebug.h"
  32. gss_OID_desc Curl_spnego_mech_oid = {
  33. 6, (char *)"\x2b\x06\x01\x05\x05\x02"
  34. };
  35. gss_OID_desc Curl_krb5_mech_oid = {
  36. 9, (char *)"\x2a\x86\x48\x86\xf7\x12\x01\x02\x02"
  37. };
  38. OM_uint32 Curl_gss_init_sec_context(
  39. struct Curl_easy *data,
  40. OM_uint32 *minor_status,
  41. gss_ctx_id_t *context,
  42. gss_name_t target_name,
  43. gss_OID mech_type,
  44. gss_channel_bindings_t input_chan_bindings,
  45. gss_buffer_t input_token,
  46. gss_buffer_t output_token,
  47. const bool mutual_auth,
  48. OM_uint32 *ret_flags)
  49. {
  50. OM_uint32 req_flags = GSS_C_REPLAY_FLAG;
  51. if(mutual_auth)
  52. req_flags |= GSS_C_MUTUAL_FLAG;
  53. if(data->set.gssapi_delegation & CURLGSSAPI_DELEGATION_POLICY_FLAG) {
  54. #ifdef GSS_C_DELEG_POLICY_FLAG
  55. req_flags |= GSS_C_DELEG_POLICY_FLAG;
  56. #else
  57. infof(data, "WARNING: support for CURLGSSAPI_DELEGATION_POLICY_FLAG not "
  58. "compiled in");
  59. #endif
  60. }
  61. if(data->set.gssapi_delegation & CURLGSSAPI_DELEGATION_FLAG)
  62. req_flags |= GSS_C_DELEG_FLAG;
  63. return gss_init_sec_context(minor_status,
  64. GSS_C_NO_CREDENTIAL, /* cred_handle */
  65. context,
  66. target_name,
  67. mech_type,
  68. req_flags,
  69. 0, /* time_req */
  70. input_chan_bindings,
  71. input_token,
  72. NULL, /* actual_mech_type */
  73. output_token,
  74. ret_flags,
  75. NULL /* time_rec */);
  76. }
  77. #define GSS_LOG_BUFFER_LEN 1024
  78. static size_t display_gss_error(OM_uint32 status, int type,
  79. char *buf, size_t len) {
  80. OM_uint32 maj_stat;
  81. OM_uint32 min_stat;
  82. OM_uint32 msg_ctx = 0;
  83. gss_buffer_desc status_string = GSS_C_EMPTY_BUFFER;
  84. do {
  85. maj_stat = gss_display_status(&min_stat,
  86. status,
  87. type,
  88. GSS_C_NO_OID,
  89. &msg_ctx,
  90. &status_string);
  91. if(maj_stat == GSS_S_COMPLETE && status_string.length > 0) {
  92. if(GSS_LOG_BUFFER_LEN > len + status_string.length + 3) {
  93. len += msnprintf(buf + len, GSS_LOG_BUFFER_LEN - len,
  94. "%.*s. ", (int)status_string.length,
  95. (char *)status_string.value);
  96. }
  97. }
  98. gss_release_buffer(&min_stat, &status_string);
  99. } while(!GSS_ERROR(maj_stat) && msg_ctx);
  100. return len;
  101. }
  102. /*
  103. * Curl_gss_log_error()
  104. *
  105. * This is used to log a GSS-API error status.
  106. *
  107. * Parameters:
  108. *
  109. * data [in] - The session handle.
  110. * prefix [in] - The prefix of the log message.
  111. * major [in] - The major status code.
  112. * minor [in] - The minor status code.
  113. */
  114. void Curl_gss_log_error(struct Curl_easy *data, const char *prefix,
  115. OM_uint32 major, OM_uint32 minor)
  116. {
  117. char buf[GSS_LOG_BUFFER_LEN];
  118. size_t len = 0;
  119. if(major != GSS_S_FAILURE)
  120. len = display_gss_error(major, GSS_C_GSS_CODE, buf, len);
  121. display_gss_error(minor, GSS_C_MECH_CODE, buf, len);
  122. infof(data, "%s%s", prefix, buf);
  123. #ifdef CURL_DISABLE_VERBOSE_STRINGS
  124. (void)data;
  125. (void)prefix;
  126. #endif
  127. }
  128. #endif /* HAVE_GSSAPI */