src/WINNT/netidmgr_plugin/dynimport.c

   1 /*
   2 * Copyright (c) 2005 Massachusetts Institute of Technology
   3 *
   4 * Permission is hereby granted, free of charge, to any person
   5 * obtaining a copy of this software and associated documentation
   6 * files (the "Software"), to deal in the Software without
   7 * restriction, including without limitation the rights to use, copy,
   8 * modify, merge, publish, distribute, sublicense, and/or sell copies
   9 * of the Software, and to permit persons to whom the Software is
  10 * furnished to do so, subject to the following conditions:
  11 *
  12 * The above copyright notice and this permission notice shall be
  13 * included in all copies or substantial portions of the Software.
  14 *
  15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  16 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  18 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  19 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  20 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  21 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  22 * SOFTWARE.
  23 */
  24
  25 /* $Id$ */
  26
  27 #include<windows.h>
  28 #include<khdefs.h>
  29 #include<kherror.h>
  30 #include<dynimport.h>
  31
  32 HINSTANCE hKrb4 = 0;
  33 HINSTANCE hKrb5 = 0;
  34 HINSTANCE hKrb524 = 0;
  35 HINSTANCE hSecur32 = 0;
  36 HINSTANCE hComErr = 0;
  37 HINSTANCE hService = 0;
  38 HINSTANCE hProfile = 0;
  39 HINSTANCE hPsapi = 0;
  40 HINSTANCE hToolHelp32 = 0;
  41 HINSTANCE hCCAPI = 0;
  42
  43 DWORD     AfsAvailable = 0;
  44
  45 // CCAPI
  46 DECL_FUNC_PTR(cc_initialize);
  47 DECL_FUNC_PTR(cc_shutdown);
  48 DECL_FUNC_PTR(cc_get_NC_info);
  49 DECL_FUNC_PTR(cc_free_NC_info);
  50
  51 // krb4 functions
  52 DECL_FUNC_PTR(get_krb_err_txt_entry);
  53 DECL_FUNC_PTR(k_isinst);
  54 DECL_FUNC_PTR(k_isname);
  55 DECL_FUNC_PTR(k_isrealm);
  56 DECL_FUNC_PTR(kadm_change_your_password);
  57 DECL_FUNC_PTR(kname_parse);
  58 DECL_FUNC_PTR(krb_get_cred);
  59 DECL_FUNC_PTR(krb_get_krbhst);
  60 DECL_FUNC_PTR(krb_get_lrealm);
  61 DECL_FUNC_PTR(krb_get_pw_in_tkt);
  62 DECL_FUNC_PTR(krb_get_tf_realm);
  63 DECL_FUNC_PTR(krb_mk_req);
  64 DECL_FUNC_PTR(krb_realmofhost);
  65 DECL_FUNC_PTR(tf_init);
  66 DECL_FUNC_PTR(tf_close);
  67 DECL_FUNC_PTR(tf_get_cred);
  68 DECL_FUNC_PTR(tf_get_pname);
  69 DECL_FUNC_PTR(tf_get_pinst);
  70 DECL_FUNC_PTR(LocalHostAddr);
  71 DECL_FUNC_PTR(tkt_string);
  72 DECL_FUNC_PTR(krb_set_tkt_string);
  73 DECL_FUNC_PTR(initialize_krb_error_func);
  74 DECL_FUNC_PTR(initialize_kadm_error_table);
  75 DECL_FUNC_PTR(dest_tkt);
  76 DECL_FUNC_PTR(krb_in_tkt);
  77 DECL_FUNC_PTR(krb_save_credentials);
  78 DECL_FUNC_PTR(krb_get_krbconf2);
  79 DECL_FUNC_PTR(krb_get_krbrealm2);
  80 DECL_FUNC_PTR(krb_life_to_time);
  81
  82 // krb5 functions
  83 DECL_FUNC_PTR(krb5_change_password);
  84 DECL_FUNC_PTR(krb5_get_init_creds_opt_init);
  85 DECL_FUNC_PTR(krb5_get_init_creds_opt_set_tkt_life);
  86 DECL_FUNC_PTR(krb5_get_init_creds_opt_set_renew_life);
  87 DECL_FUNC_PTR(krb5_get_init_creds_opt_set_forwardable);
  88 DECL_FUNC_PTR(krb5_get_init_creds_opt_set_proxiable);
  89 DECL_FUNC_PTR(krb5_get_init_creds_opt_set_address_list);
  90 DECL_FUNC_PTR(krb5_get_init_creds_password);
  91 DECL_FUNC_PTR(krb5_get_prompt_types);
  92 DECL_FUNC_PTR(krb5_build_principal_ext);
  93 DECL_FUNC_PTR(krb5_cc_get_name);
  94 DECL_FUNC_PTR(krb5_cc_get_type);
  95 DECL_FUNC_PTR(krb5_cc_resolve);
  96 DECL_FUNC_PTR(krb5_cc_default);
  97 DECL_FUNC_PTR(krb5_cc_default_name);
  98 DECL_FUNC_PTR(krb5_cc_set_default_name);
  99 DECL_FUNC_PTR(krb5_cc_initialize);
 100 DECL_FUNC_PTR(krb5_cc_destroy);
 101 DECL_FUNC_PTR(krb5_cc_close);
 102 DECL_FUNC_PTR(krb5_cc_store_cred);
 103 DECL_FUNC_PTR(krb5_cc_copy_creds);
 104 DECL_FUNC_PTR(krb5_cc_retrieve_cred);
 105 DECL_FUNC_PTR(krb5_cc_get_principal);
 106 DECL_FUNC_PTR(krb5_cc_start_seq_get);
 107 DECL_FUNC_PTR(krb5_cc_next_cred);
 108 DECL_FUNC_PTR(krb5_cc_end_seq_get);
 109 DECL_FUNC_PTR(krb5_cc_remove_cred);
 110 DECL_FUNC_PTR(krb5_cc_set_flags);
 111 // DECL_FUNC_PTR(krb5_cc_get_type);
 112 DECL_FUNC_PTR(krb5_free_context);
 113 DECL_FUNC_PTR(krb5_free_cred_contents);
 114 DECL_FUNC_PTR(krb5_free_principal);
 115 DECL_FUNC_PTR(krb5_get_in_tkt_with_password);
 116 DECL_FUNC_PTR(krb5_init_context);
 117 DECL_FUNC_PTR(krb5_parse_name);
 118 DECL_FUNC_PTR(krb5_timeofday);
 119 DECL_FUNC_PTR(krb5_timestamp_to_sfstring);
 120 DECL_FUNC_PTR(krb5_unparse_name);
 121 DECL_FUNC_PTR(krb5_get_credentials);
 122 DECL_FUNC_PTR(krb5_mk_req);
 123 DECL_FUNC_PTR(krb5_sname_to_principal);
 124 DECL_FUNC_PTR(krb5_get_credentials_renew);
 125 DECL_FUNC_PTR(krb5_free_data);
 126 DECL_FUNC_PTR(krb5_free_data_contents);
 127 // DECL_FUNC_PTR(krb5_get_realm_domain);
 128 DECL_FUNC_PTR(krb5_free_unparsed_name);
 129 DECL_FUNC_PTR(krb5_os_localaddr);
 130 DECL_FUNC_PTR(krb5_copy_keyblock_contents);
 131 DECL_FUNC_PTR(krb5_copy_data);
 132 DECL_FUNC_PTR(krb5_free_creds);
 133 DECL_FUNC_PTR(krb5_build_principal);
 134 DECL_FUNC_PTR(krb5_get_renewed_creds);
 135 DECL_FUNC_PTR(krb5_get_default_config_files);
 136 DECL_FUNC_PTR(krb5_free_config_files);
 137 DECL_FUNC_PTR(krb5_get_default_realm);
 138 DECL_FUNC_PTR(krb5_set_default_realm);
 139 DECL_FUNC_PTR(krb5_free_ticket);
 140 DECL_FUNC_PTR(krb5_decode_ticket);
 141 DECL_FUNC_PTR(krb5_get_host_realm);
 142 DECL_FUNC_PTR(krb5_free_host_realm);
 143 DECL_FUNC_PTR(krb5_c_random_make_octets);
 144 DECL_FUNC_PTR(krb5_free_addresses);
 145 DECL_FUNC_PTR(krb5_free_default_realm);
 146
 147 // Krb524 functions
 148 DECL_FUNC_PTR(krb524_init_ets);
 149 DECL_FUNC_PTR(krb524_convert_creds_kdc);
 150
 151 // ComErr functions
 152 DECL_FUNC_PTR(com_err);
 153 DECL_FUNC_PTR(error_message);
 154
 155 // Profile functions
 156 DECL_FUNC_PTR(profile_init);
 157 DECL_FUNC_PTR(profile_flush);
 158 DECL_FUNC_PTR(profile_release);
 159 DECL_FUNC_PTR(profile_get_subsection_names);
 160 DECL_FUNC_PTR(profile_free_list);
 161 DECL_FUNC_PTR(profile_get_string);
 162 DECL_FUNC_PTR(profile_get_values);
 163 DECL_FUNC_PTR(profile_get_relation_names);
 164 DECL_FUNC_PTR(profile_clear_relation);
 165 DECL_FUNC_PTR(profile_add_relation);
 166 DECL_FUNC_PTR(profile_update_relation);
 167 DECL_FUNC_PTR(profile_release_string);
 168
 169 // Service functions
 170 DECL_FUNC_PTR(OpenSCManagerA);
 171 DECL_FUNC_PTR(OpenServiceA);
 172 DECL_FUNC_PTR(QueryServiceStatus);
 173 DECL_FUNC_PTR(CloseServiceHandle);
 174 DECL_FUNC_PTR(LsaNtStatusToWinError);
 175
 176 // LSA Functions
 177 DECL_FUNC_PTR(LsaConnectUntrusted);
 178 DECL_FUNC_PTR(LsaLookupAuthenticationPackage);
 179 DECL_FUNC_PTR(LsaCallAuthenticationPackage);
 180 DECL_FUNC_PTR(LsaFreeReturnBuffer);
 181 DECL_FUNC_PTR(LsaGetLogonSessionData);
 182
 183 // CCAPI
 184 FUNC_INFO ccapi_fi[] = {
 185     MAKE_FUNC_INFO(cc_initialize),
 186     MAKE_FUNC_INFO(cc_shutdown),
 187     MAKE_FUNC_INFO(cc_get_NC_info),
 188     MAKE_FUNC_INFO(cc_free_NC_info),
 189     END_FUNC_INFO
 190 };
 191
 192 FUNC_INFO k4_fi[] = {
 193     MAKE_FUNC_INFO(get_krb_err_txt_entry),
 194     MAKE_FUNC_INFO(k_isinst),
 195     MAKE_FUNC_INFO(k_isname),
 196     MAKE_FUNC_INFO(k_isrealm),
 197     MAKE_FUNC_INFO(kadm_change_your_password),
 198     MAKE_FUNC_INFO(kname_parse),
 199     MAKE_FUNC_INFO(krb_get_cred),
 200     MAKE_FUNC_INFO(krb_get_krbhst),
 201     MAKE_FUNC_INFO(krb_get_lrealm),
 202     MAKE_FUNC_INFO(krb_get_pw_in_tkt),
 203     MAKE_FUNC_INFO(krb_get_tf_realm),
 204     MAKE_FUNC_INFO(krb_mk_req),
 205     MAKE_FUNC_INFO(krb_realmofhost),
 206     MAKE_FUNC_INFO(tf_init),
 207     MAKE_FUNC_INFO(tf_close),
 208     MAKE_FUNC_INFO(tf_get_cred),
 209     MAKE_FUNC_INFO(tf_get_pname),
 210     MAKE_FUNC_INFO(tf_get_pinst),
 211     MAKE_FUNC_INFO(LocalHostAddr),
 212     MAKE_FUNC_INFO(tkt_string),
 213     MAKE_FUNC_INFO(krb_set_tkt_string),
 214     MAKE_FUNC_INFO(initialize_krb_error_func),
 215     MAKE_FUNC_INFO(initialize_kadm_error_table),
 216     MAKE_FUNC_INFO(dest_tkt),
 217     /*        MAKE_FUNC_INFO(lsh_LoadKrb4LeashErrorTables), */// XXX
 218     MAKE_FUNC_INFO(krb_in_tkt),
 219     MAKE_FUNC_INFO(krb_save_credentials),
 220     MAKE_FUNC_INFO(krb_get_krbconf2),
 221     MAKE_FUNC_INFO(krb_get_krbrealm2),
 222     MAKE_FUNC_INFO(krb_life_to_time),
 223     END_FUNC_INFO
 224 };
 225
 226 FUNC_INFO k5_fi[] = {
 227     MAKE_FUNC_INFO(krb5_change_password),
 228     MAKE_FUNC_INFO(krb5_get_init_creds_opt_init),
 229     MAKE_FUNC_INFO(krb5_get_init_creds_opt_set_tkt_life),
 230     MAKE_FUNC_INFO(krb5_get_init_creds_opt_set_renew_life),
 231     MAKE_FUNC_INFO(krb5_get_init_creds_opt_set_forwardable),
 232     MAKE_FUNC_INFO(krb5_get_init_creds_opt_set_proxiable),
 233     MAKE_FUNC_INFO(krb5_get_init_creds_opt_set_address_list),
 234     MAKE_FUNC_INFO(krb5_get_init_creds_password),
 235     MAKE_FUNC_INFO(krb5_get_prompt_types),
 236     MAKE_FUNC_INFO(krb5_build_principal_ext),
 237     MAKE_FUNC_INFO(krb5_cc_get_name),
 238     MAKE_FUNC_INFO(krb5_cc_get_type),
 239     MAKE_FUNC_INFO(krb5_cc_resolve),
 240     MAKE_FUNC_INFO(krb5_cc_default),
 241     MAKE_FUNC_INFO(krb5_cc_default_name),
 242     MAKE_FUNC_INFO(krb5_cc_set_default_name),
 243     MAKE_FUNC_INFO(krb5_cc_initialize),
 244     MAKE_FUNC_INFO(krb5_cc_destroy),
 245     MAKE_FUNC_INFO(krb5_cc_close),
 246     MAKE_FUNC_INFO(krb5_cc_copy_creds),
 247     MAKE_FUNC_INFO(krb5_cc_store_cred),
 248     MAKE_FUNC_INFO(krb5_cc_retrieve_cred),
 249     MAKE_FUNC_INFO(krb5_cc_get_principal),
 250     MAKE_FUNC_INFO(krb5_cc_start_seq_get),
 251     MAKE_FUNC_INFO(krb5_cc_next_cred),
 252     MAKE_FUNC_INFO(krb5_cc_end_seq_get),
 253     MAKE_FUNC_INFO(krb5_cc_remove_cred),
 254     MAKE_FUNC_INFO(krb5_cc_set_flags),
 255     // MAKE_FUNC_INFO(krb5_cc_get_type),
 256     MAKE_FUNC_INFO(krb5_free_context),
 257     MAKE_FUNC_INFO(krb5_free_cred_contents),
 258     MAKE_FUNC_INFO(krb5_free_principal),
 259     MAKE_FUNC_INFO(krb5_get_in_tkt_with_password),
 260     MAKE_FUNC_INFO(krb5_init_context),
 261     MAKE_FUNC_INFO(krb5_parse_name),
 262     MAKE_FUNC_INFO(krb5_timeofday),
 263     MAKE_FUNC_INFO(krb5_timestamp_to_sfstring),
 264     MAKE_FUNC_INFO(krb5_unparse_name),
 265     MAKE_FUNC_INFO(krb5_get_credentials),
 266     MAKE_FUNC_INFO(krb5_mk_req),
 267     MAKE_FUNC_INFO(krb5_sname_to_principal),
 268     MAKE_FUNC_INFO(krb5_get_credentials_renew),
 269     MAKE_FUNC_INFO(krb5_free_data),
 270     MAKE_FUNC_INFO(krb5_free_data_contents),
 271     //  MAKE_FUNC_INFO(krb5_get_realm_domain),
 272     MAKE_FUNC_INFO(krb5_free_unparsed_name),
 273     MAKE_FUNC_INFO(krb5_os_localaddr),
 274     MAKE_FUNC_INFO(krb5_copy_keyblock_contents),
 275     MAKE_FUNC_INFO(krb5_copy_data),
 276     MAKE_FUNC_INFO(krb5_free_creds),
 277     MAKE_FUNC_INFO(krb5_build_principal),
 278     MAKE_FUNC_INFO(krb5_get_renewed_creds),
 279     MAKE_FUNC_INFO(krb5_free_addresses),
 280     MAKE_FUNC_INFO(krb5_get_default_config_files),
 281     MAKE_FUNC_INFO(krb5_free_config_files),
 282     MAKE_FUNC_INFO(krb5_get_default_realm),
 283     MAKE_FUNC_INFO(krb5_set_default_realm),
 284     MAKE_FUNC_INFO(krb5_free_ticket),
 285     MAKE_FUNC_INFO(krb5_decode_ticket),
 286     MAKE_FUNC_INFO(krb5_get_host_realm),
 287     MAKE_FUNC_INFO(krb5_free_host_realm),
 288     MAKE_FUNC_INFO(krb5_c_random_make_octets),
 289     MAKE_FUNC_INFO(krb5_free_default_realm),
 290     END_FUNC_INFO
 291 };
 292
 293 FUNC_INFO k524_fi[] = {
 294     MAKE_FUNC_INFO(krb524_init_ets),
 295     MAKE_FUNC_INFO(krb524_convert_creds_kdc),
 296     END_FUNC_INFO
 297 };
 298
 299 FUNC_INFO profile_fi[] = {
 300     MAKE_FUNC_INFO(profile_init),
 301     MAKE_FUNC_INFO(profile_flush),
 302     MAKE_FUNC_INFO(profile_release),
 303     MAKE_FUNC_INFO(profile_get_subsection_names),
 304     MAKE_FUNC_INFO(profile_free_list),
 305     MAKE_FUNC_INFO(profile_get_string),
 306     MAKE_FUNC_INFO(profile_get_values),
 307     MAKE_FUNC_INFO(profile_get_relation_names),
 308     MAKE_FUNC_INFO(profile_clear_relation),
 309     MAKE_FUNC_INFO(profile_add_relation),
 310     MAKE_FUNC_INFO(profile_update_relation),
 311     MAKE_FUNC_INFO(profile_release_string),
 312     END_FUNC_INFO
 313 };
 314
 315 FUNC_INFO ce_fi[] = {
 316     MAKE_FUNC_INFO(com_err),
 317     MAKE_FUNC_INFO(error_message),
 318     END_FUNC_INFO
 319 };
 320
 321 FUNC_INFO service_fi[] = {
 322     MAKE_FUNC_INFO(OpenSCManagerA),
 323     MAKE_FUNC_INFO(OpenServiceA),
 324     MAKE_FUNC_INFO(QueryServiceStatus),
 325     MAKE_FUNC_INFO(CloseServiceHandle),
 326     MAKE_FUNC_INFO(LsaNtStatusToWinError),
 327     END_FUNC_INFO
 328 };
 329
 330 FUNC_INFO lsa_fi[] = {
 331     MAKE_FUNC_INFO(LsaConnectUntrusted),
 332     MAKE_FUNC_INFO(LsaLookupAuthenticationPackage),
 333     MAKE_FUNC_INFO(LsaCallAuthenticationPackage),
 334     MAKE_FUNC_INFO(LsaFreeReturnBuffer),
 335     MAKE_FUNC_INFO(LsaGetLogonSessionData),
 336     END_FUNC_INFO
 337 };
 338
 339 // psapi functions
 340 DECL_FUNC_PTR(GetModuleFileNameExA);
 341 DECL_FUNC_PTR(EnumProcessModules);
 342
 343 FUNC_INFO psapi_fi[] = {
 344     MAKE_FUNC_INFO(GetModuleFileNameExA),
 345         MAKE_FUNC_INFO(EnumProcessModules),
 346         END_FUNC_INFO
 347 };
 348
 349 // toolhelp functions
 350 DECL_FUNC_PTR(CreateToolhelp32Snapshot);
 351 DECL_FUNC_PTR(Module32First);
 352 DECL_FUNC_PTR(Module32Next);
 353
 354 FUNC_INFO toolhelp_fi[] = {
 355     MAKE_FUNC_INFO(CreateToolhelp32Snapshot),
 356         MAKE_FUNC_INFO(Module32First),
 357         MAKE_FUNC_INFO(Module32Next),
 358         END_FUNC_INFO
 359 };
 360
 361 khm_int32 init_imports(void) {
 362     OSVERSIONINFO osvi;
 363     int imp_rv = 1;
 364
 365 #define CKRV if(!imp_rv) goto _err_ret
 366
 367 #ifndef _WIN64
 368     imp_rv = LoadFuncs(KRB4_DLL, k4_fi, &hKrb4, 0, 1, 0, 0);
 369     CKRV;
 370 #endif
 371
 372     imp_rv = LoadFuncs(KRB5_DLL, k5_fi, &hKrb5, 0, 1, 0, 0);
 373     CKRV;
 374
 375     imp_rv = LoadFuncs(COMERR_DLL, ce_fi, &hComErr, 0, 0, 1, 0);
 376     CKRV;
 377
 378     imp_rv = LoadFuncs(SERVICE_DLL, service_fi, &hService, 0, 1, 0, 0);
 379     CKRV;
 380
 381     imp_rv = LoadFuncs(SECUR32_DLL, lsa_fi, &hSecur32, 0, 1, 1, 1);
 382     CKRV;
 383 #ifndef _WIN64
 384     imp_rv = LoadFuncs(KRB524_DLL, k524_fi, &hKrb524, 0, 1, 1, 1);
 385     CKRV;
 386 #endif
 387     imp_rv = LoadFuncs(PROFILE_DLL, profile_fi, &hProfile, 0, 1, 0, 0);
 388     CKRV;
 389
 390     imp_rv = LoadFuncs(CCAPI_DLL, ccapi_fi, &hCCAPI, 0, 1, 0, 0);
 391     /* CCAPI_DLL is optional.  No error check. */
 392
 393     memset(&osvi, 0, sizeof(OSVERSIONINFO));
 394     osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
 395     GetVersionEx(&osvi);
 396
 397     // XXX: We should really use feature testing, first
 398     // checking for CreateToolhelp32Snapshot.  If that's
 399     // not around, we try the psapi stuff.
 400     //
 401     // Only load LSA functions if on NT/2000/XP
 402     if(osvi.dwPlatformId == VER_PLATFORM_WIN32_WINDOWS)
 403     {
 404         // Windows 9x
 405         imp_rv = LoadFuncs(TOOLHELPDLL, toolhelp_fi, &hToolHelp32, 0, 1, 0, 0);
 406         CKRV;
 407
 408         hPsapi = 0;
 409     }
 410     else if(osvi.dwPlatformId == VER_PLATFORM_WIN32_NT)
 411     {
 412         // Windows NT
 413         imp_rv = LoadFuncs(PSAPIDLL, psapi_fi, &hPsapi, 0, 1, 0, 0);
 414         CKRV;
 415
 416         hToolHelp32 = 0;
 417     }
 418
 419     AfsAvailable = TRUE; //afscompat_init();
 420
 421     return KHM_ERROR_SUCCESS;
 422
 423  _err_ret:
 424     return KHM_ERROR_NOT_FOUND;
 425 }
 426
 427 khm_int32 exit_imports(void) {
 428     //afscompat_close();
 429
 430     if (hKrb4)
 431         FreeLibrary(hKrb4);
 432     if (hKrb5)
 433         FreeLibrary(hKrb5);
 434     if (hProfile)
 435         FreeLibrary(hProfile);
 436     if (hComErr)
 437         FreeLibrary(hComErr);
 438     if (hService)
 439         FreeLibrary(hService);
 440     if (hSecur32)
 441         FreeLibrary(hSecur32);
 442     if (hKrb524)
 443         FreeLibrary(hKrb524);
 444     if (hPsapi)
 445         FreeLibrary(hPsapi);
 446     if (hToolHelp32)
 447         FreeLibrary(hToolHelp32);
 448
 449     return KHM_ERROR_SUCCESS;
 450 }
 451
 452 int (*Lcom_err)(LPSTR,long,LPSTR,...);
 453 LPSTR (*Lerror_message)(long);
 454 LPSTR (*Lerror_table_name)(long);
 455
 456 #pragma warning (disable: 4213)
 457 void Leash_load_com_err_callback(FARPROC ce,
 458                                  FARPROC em,
 459                                  FARPROC etn)
 460 {
 461     (FARPROC)Lcom_err=ce;
 462     (FARPROC)Lerror_message=em;
 463     (FARPROC)Lerror_table_name=etn;
 464 }