17c478bd9Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 27c478bd9Sstevel@tonic-gate /* 37c478bd9Sstevel@tonic-gate * lib/krb5/os/get_krbhst.c 47c478bd9Sstevel@tonic-gate * 57c478bd9Sstevel@tonic-gate * Copyright 1990,1991 by the Massachusetts Institute of Technology. 67c478bd9Sstevel@tonic-gate * All Rights Reserved. 77c478bd9Sstevel@tonic-gate * 87c478bd9Sstevel@tonic-gate * Export of this software from the United States of America may 97c478bd9Sstevel@tonic-gate * require a specific license from the United States Government. 107c478bd9Sstevel@tonic-gate * It is the responsibility of any person or organization contemplating 117c478bd9Sstevel@tonic-gate * export to obtain such a license before exporting. 127c478bd9Sstevel@tonic-gate * 137c478bd9Sstevel@tonic-gate * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and 147c478bd9Sstevel@tonic-gate * distribute this software and its documentation for any purpose and 157c478bd9Sstevel@tonic-gate * without fee is hereby granted, provided that the above copyright 167c478bd9Sstevel@tonic-gate * notice appear in all copies and that both that copyright notice and 177c478bd9Sstevel@tonic-gate * this permission notice appear in supporting documentation, and that 187c478bd9Sstevel@tonic-gate * the name of M.I.T. not be used in advertising or publicity pertaining 197c478bd9Sstevel@tonic-gate * to distribution of the software without specific, written prior 207c478bd9Sstevel@tonic-gate * permission. Furthermore if you modify this software you must label 217c478bd9Sstevel@tonic-gate * your software as modified software and not distribute it in such a 227c478bd9Sstevel@tonic-gate * fashion that it might be confused with the original M.I.T. software. 237c478bd9Sstevel@tonic-gate * M.I.T. makes no representations about the suitability of 247c478bd9Sstevel@tonic-gate * this software for any purpose. It is provided "as is" without express 257c478bd9Sstevel@tonic-gate * or implied warranty. 267c478bd9Sstevel@tonic-gate * 277c478bd9Sstevel@tonic-gate * 287c478bd9Sstevel@tonic-gate * krb5_get_krbhst() function. 297c478bd9Sstevel@tonic-gate */ 307c478bd9Sstevel@tonic-gate 317c478bd9Sstevel@tonic-gate #include <k5-int.h> 327c478bd9Sstevel@tonic-gate #include <stdio.h> 337c478bd9Sstevel@tonic-gate #include <ctype.h> 347c478bd9Sstevel@tonic-gate 357c478bd9Sstevel@tonic-gate /* 367c478bd9Sstevel@tonic-gate Figures out the Kerberos server names for the given realm, filling in a 377c478bd9Sstevel@tonic-gate pointer to an argv[] style list of names, terminated with a null pointer. 387c478bd9Sstevel@tonic-gate 397c478bd9Sstevel@tonic-gate If the realm is unknown, the filled-in pointer is set to NULL. 407c478bd9Sstevel@tonic-gate 417c478bd9Sstevel@tonic-gate The pointer array and strings pointed to are all in allocated storage, 427c478bd9Sstevel@tonic-gate and should be freed by the caller when finished. 437c478bd9Sstevel@tonic-gate 447c478bd9Sstevel@tonic-gate returns system errors 457c478bd9Sstevel@tonic-gate */ 467c478bd9Sstevel@tonic-gate 477c478bd9Sstevel@tonic-gate /* 487c478bd9Sstevel@tonic-gate * Implementation: the server names for given realms are stored in a 497c478bd9Sstevel@tonic-gate * configuration file, 507c478bd9Sstevel@tonic-gate * named by krb5_config_file; the first token (on the first line) in 517c478bd9Sstevel@tonic-gate * this file is taken as the default local realm name. 527c478bd9Sstevel@tonic-gate * 537c478bd9Sstevel@tonic-gate * Each succeeding line has a realm name as the first token, and a server name 547c478bd9Sstevel@tonic-gate * as a second token. Additional tokens may be present on the line, but 557c478bd9Sstevel@tonic-gate * are ignored by this function. 567c478bd9Sstevel@tonic-gate * 577c478bd9Sstevel@tonic-gate * All lines which begin with the desired realm name will have the 587c478bd9Sstevel@tonic-gate * hostname added to the list returned. 597c478bd9Sstevel@tonic-gate */ 607c478bd9Sstevel@tonic-gate 617c478bd9Sstevel@tonic-gate krb5_error_code 62*505d05c7Sgtb krb5_get_krbhst(krb5_context context, const krb5_data *realm, char ***hostlist) 637c478bd9Sstevel@tonic-gate { 647c478bd9Sstevel@tonic-gate char **values, **cpp, *cp; 657c478bd9Sstevel@tonic-gate const char *realm_kdc_names[4]; 667c478bd9Sstevel@tonic-gate krb5_error_code retval; 677c478bd9Sstevel@tonic-gate int i, count; 687c478bd9Sstevel@tonic-gate char **rethosts; 697c478bd9Sstevel@tonic-gate 707c478bd9Sstevel@tonic-gate rethosts = 0; 717c478bd9Sstevel@tonic-gate 727c478bd9Sstevel@tonic-gate realm_kdc_names[0] = "realms"; 737c478bd9Sstevel@tonic-gate realm_kdc_names[1] = realm->data; 747c478bd9Sstevel@tonic-gate realm_kdc_names[2] = "kdc"; 757c478bd9Sstevel@tonic-gate realm_kdc_names[3] = 0; 767c478bd9Sstevel@tonic-gate 777c478bd9Sstevel@tonic-gate if (context->profile == 0) 787c478bd9Sstevel@tonic-gate return KRB5_CONFIG_CANTOPEN; 797c478bd9Sstevel@tonic-gate 807c478bd9Sstevel@tonic-gate retval = profile_get_values(context->profile, realm_kdc_names, &values); 817c478bd9Sstevel@tonic-gate if (retval == PROF_NO_SECTION) 827c478bd9Sstevel@tonic-gate return KRB5_REALM_UNKNOWN; 837c478bd9Sstevel@tonic-gate if (retval == PROF_NO_RELATION) 847c478bd9Sstevel@tonic-gate return KRB5_CONFIG_BADFORMAT; 857c478bd9Sstevel@tonic-gate if (retval) 867c478bd9Sstevel@tonic-gate return retval; 877c478bd9Sstevel@tonic-gate 887c478bd9Sstevel@tonic-gate /* 897c478bd9Sstevel@tonic-gate * Do cleanup over the list. We allow for some extra field to be 907c478bd9Sstevel@tonic-gate * added to the kdc line later (maybe the port number) 917c478bd9Sstevel@tonic-gate */ 927c478bd9Sstevel@tonic-gate for (cpp = values; *cpp; cpp++) { 937c478bd9Sstevel@tonic-gate cp = strchr(*cpp, ' '); 947c478bd9Sstevel@tonic-gate if (cp) 957c478bd9Sstevel@tonic-gate *cp = 0; 967c478bd9Sstevel@tonic-gate cp = strchr(*cpp, '\t'); 977c478bd9Sstevel@tonic-gate if (cp) 987c478bd9Sstevel@tonic-gate *cp = 0; 997c478bd9Sstevel@tonic-gate cp = strchr(*cpp, ':'); 1007c478bd9Sstevel@tonic-gate if (cp) 1017c478bd9Sstevel@tonic-gate *cp = 0; 1027c478bd9Sstevel@tonic-gate } 1037c478bd9Sstevel@tonic-gate count = cpp - values; 1047c478bd9Sstevel@tonic-gate rethosts = malloc(sizeof(char *) * (count + 1)); 1057c478bd9Sstevel@tonic-gate if (!rethosts) { 1067c478bd9Sstevel@tonic-gate retval = ENOMEM; 1077c478bd9Sstevel@tonic-gate goto cleanup; 1087c478bd9Sstevel@tonic-gate } 1097c478bd9Sstevel@tonic-gate for (i = 0; i < count; i++) { 110*505d05c7Sgtb unsigned int len = strlen (values[i]) + 1; 1117c478bd9Sstevel@tonic-gate rethosts[i] = malloc(len); 1127c478bd9Sstevel@tonic-gate if (!rethosts[i]) { 1137c478bd9Sstevel@tonic-gate retval = ENOMEM; 1147c478bd9Sstevel@tonic-gate goto cleanup; 1157c478bd9Sstevel@tonic-gate } 1167c478bd9Sstevel@tonic-gate memcpy (rethosts[i], values[i], len); 1177c478bd9Sstevel@tonic-gate } 1187c478bd9Sstevel@tonic-gate rethosts[count] = 0; 1197c478bd9Sstevel@tonic-gate cleanup: 1207c478bd9Sstevel@tonic-gate if (retval && rethosts) { 1217c478bd9Sstevel@tonic-gate for (cpp = rethosts; *cpp; cpp++) 1227c478bd9Sstevel@tonic-gate free(*cpp); 1237c478bd9Sstevel@tonic-gate free(rethosts); 1247c478bd9Sstevel@tonic-gate rethosts = 0; 1257c478bd9Sstevel@tonic-gate } 1267c478bd9Sstevel@tonic-gate profile_free_list(values); 1277c478bd9Sstevel@tonic-gate *hostlist = rethosts; 1287c478bd9Sstevel@tonic-gate return retval; 1297c478bd9Sstevel@tonic-gate } 130