181477Smarkm/*- 2109069Snectar * This pam_krb5 module contains code that is: 3109069Snectar * Copyright (c) Derrick J. Brashear, 1996. All rights reserved. 4109069Snectar * Copyright (c) Frank Cusack, 1999-2001. All rights reserved. 5109069Snectar * Copyright (c) Jacques A. Vidrine, 2000-2001. All rights reserved. 6109069Snectar * Copyright (c) Nicolas Williams, 2001. All rights reserved. 7109069Snectar * Copyright (c) Perot Systems Corporation, 2001. All rights reserved. 8109069Snectar * Copyright (c) Mark R V Murray, 2001. All rights reserved. 9140667Srwatson * Copyright (c) Networks Associates Technology, Inc., 2002-2005. 10109069Snectar * All rights reserved. 1194564Sdes * 1293984Sdes * Portions of this software were developed for the FreeBSD Project by 1393984Sdes * ThinkSec AS and NAI Labs, the Security Research Division of Network 1493984Sdes * Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 1593984Sdes * ("CBOSS"), as part of the DARPA CHATS research program. 16110274Sdes * 1781477Smarkm * Redistribution and use in source and binary forms, with or without 1881477Smarkm * modification, are permitted provided that the following conditions 1981477Smarkm * are met: 2081477Smarkm * 1. Redistributions of source code must retain the above copyright 21109069Snectar * notices, and the entire permission notice in its entirety, 2281477Smarkm * including the disclaimer of warranties. 2381477Smarkm * 2. Redistributions in binary form must reproduce the above copyright 2481477Smarkm * notice, this list of conditions and the following disclaimer in the 2581477Smarkm * documentation and/or other materials provided with the distribution. 2681477Smarkm * 3. The name of the author may not be used to endorse or promote 2781477Smarkm * products derived from this software without specific prior 2881477Smarkm * written permission. 29110274Sdes * 3081477Smarkm * ALTERNATIVELY, this product may be distributed under the terms of 3181477Smarkm * the GNU Public License, in which case the provisions of the GPL are 3281477Smarkm * required INSTEAD OF the above restrictions. (This clause is 3381477Smarkm * necessary due to a potential bad interaction between the GPL and 3481477Smarkm * the restrictions contained in a BSD-style copyright.) 35110274Sdes * 3681477Smarkm * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED 3781477Smarkm * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 3881477Smarkm * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 3981477Smarkm * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 4081477Smarkm * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 4181477Smarkm * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 4281477Smarkm * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 4381477Smarkm * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 4481477Smarkm * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 4581477Smarkm * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 4681477Smarkm * OF THE POSSIBILITY OF SUCH DAMAGE. 4794564Sdes * 4881477Smarkm */ 4981477Smarkm 5084218Sdillon#include <sys/cdefs.h> 5184218Sdillon__FBSDID("$FreeBSD$"); 5284218Sdillon 5381477Smarkm#include <sys/types.h> 5481477Smarkm#include <sys/stat.h> 5581477Smarkm#include <errno.h> 5681477Smarkm#include <limits.h> 5781477Smarkm#include <pwd.h> 5881477Smarkm#include <stdio.h> 5981477Smarkm#include <stdlib.h> 6093984Sdes#include <string.h> 6181477Smarkm#include <syslog.h> 6281477Smarkm#include <unistd.h> 6381477Smarkm 6481477Smarkm#include <krb5.h> 6581477Smarkm#include <com_err.h> 6681477Smarkm 6781477Smarkm#define PAM_SM_AUTH 6881477Smarkm#define PAM_SM_ACCOUNT 6981477Smarkm#define PAM_SM_PASSWORD 7081477Smarkm 7181477Smarkm#include <security/pam_appl.h> 7281477Smarkm#include <security/pam_modules.h> 7390229Sdes#include <security/pam_mod_misc.h> 74115465Sdes#include <security/openpam.h> 7581477Smarkm 7681477Smarkm#define COMPAT_HEIMDAL 7781477Smarkm/* #define COMPAT_MIT */ 7881477Smarkm 7981477Smarkmstatic int verify_krb_v5_tgt(krb5_context, krb5_ccache, char *, int); 8081477Smarkmstatic void cleanup_cache(pam_handle_t *, void *, int); 8181477Smarkmstatic const char *compat_princ_component(krb5_context, krb5_principal, int); 8281477Smarkmstatic void compat_free_data_contents(krb5_context, krb5_data *); 8381477Smarkm 8481477Smarkm#define USER_PROMPT "Username: " 8585485Ssobomax#define PASSWORD_PROMPT "Password:" 8685485Ssobomax#define NEW_PASSWORD_PROMPT "New Password:" 8781477Smarkm 88115465Sdes#define PAM_OPT_CCACHE "ccache" 89140667Srwatson#define PAM_OPT_DEBUG "debug" 90115465Sdes#define PAM_OPT_FORWARDABLE "forwardable" 91115465Sdes#define PAM_OPT_NO_CCACHE "no_ccache" 92207553Smm#define PAM_OPT_NO_USER_CHECK "no_user_check" 93115465Sdes#define PAM_OPT_REUSE_CCACHE "reuse_ccache" 9481477Smarkm 9581477Smarkm/* 9681477Smarkm * authentication management 9781477Smarkm */ 9881477SmarkmPAM_EXTERN int 9994564Sdespam_sm_authenticate(pam_handle_t *pamh, int flags __unused, 100115465Sdes int argc __unused, const char *argv[] __unused) 10181477Smarkm{ 10281477Smarkm krb5_error_code krbret; 10381477Smarkm krb5_context pam_context; 10481477Smarkm krb5_creds creds; 10581477Smarkm krb5_principal princ; 106106864Snectar krb5_ccache ccache; 10781477Smarkm krb5_get_init_creds_opt opts; 10881477Smarkm struct passwd *pwd; 10981477Smarkm int retval; 110174837Sdes const void *ccache_data; 111123454Sdes const char *user, *pass; 112125650Sdes const void *sourceuser, *service; 113106864Snectar char *principal, *princ_name, *ccache_name, luser[32], *srvdup; 11481477Smarkm 11581477Smarkm retval = pam_get_user(pamh, &user, USER_PROMPT); 11681477Smarkm if (retval != PAM_SUCCESS) 11794564Sdes return (retval); 11881477Smarkm 11981477Smarkm PAM_LOG("Got user: %s", user); 12081477Smarkm 121123454Sdes retval = pam_get_item(pamh, PAM_RUSER, &sourceuser); 12281477Smarkm if (retval != PAM_SUCCESS) 12394564Sdes return (retval); 12481477Smarkm 125123454Sdes PAM_LOG("Got ruser: %s", (const char *)sourceuser); 12681477Smarkm 12781477Smarkm service = NULL; 128123454Sdes pam_get_item(pamh, PAM_SERVICE, &service); 12981477Smarkm if (service == NULL) 13081477Smarkm service = "unknown"; 13181477Smarkm 132123454Sdes PAM_LOG("Got service: %s", (const char *)service); 13381477Smarkm 13481477Smarkm krbret = krb5_init_context(&pam_context); 13581477Smarkm if (krbret != 0) { 13681477Smarkm PAM_VERBOSE_ERROR("Kerberos 5 error"); 13794564Sdes return (PAM_SERVICE_ERR); 13881477Smarkm } 13981477Smarkm 14081477Smarkm PAM_LOG("Context initialised"); 14181477Smarkm 14281477Smarkm krb5_get_init_creds_opt_init(&opts); 14381477Smarkm 144115465Sdes if (openpam_get_option(pamh, PAM_OPT_FORWARDABLE)) 14581477Smarkm krb5_get_init_creds_opt_set_forwardable(&opts, 1); 14681477Smarkm 14781477Smarkm PAM_LOG("Credentials initialised"); 14881477Smarkm 14981477Smarkm krbret = krb5_cc_register(pam_context, &krb5_mcc_ops, FALSE); 15081477Smarkm if (krbret != 0 && krbret != KRB5_CC_TYPE_EXISTS) { 15181477Smarkm PAM_VERBOSE_ERROR("Kerberos 5 error"); 15281477Smarkm retval = PAM_SERVICE_ERR; 15381477Smarkm goto cleanup3; 15481477Smarkm } 15581477Smarkm 15681477Smarkm PAM_LOG("Done krb5_cc_register()"); 15781477Smarkm 15881477Smarkm /* Get principal name */ 159115465Sdes if (openpam_get_option(pamh, PAM_OPT_AUTH_AS_SELF)) 160123454Sdes asprintf(&principal, "%s/%s", (const char *)sourceuser, user); 16181477Smarkm else 16281477Smarkm principal = strdup(user); 16381477Smarkm 16481477Smarkm PAM_LOG("Created principal: %s", principal); 16581477Smarkm 16681477Smarkm krbret = krb5_parse_name(pam_context, principal, &princ); 16781477Smarkm free(principal); 16881477Smarkm if (krbret != 0) { 169106862Snectar PAM_LOG("Error krb5_parse_name(): %s", 170106862Snectar krb5_get_err_text(pam_context, krbret)); 17181477Smarkm PAM_VERBOSE_ERROR("Kerberos 5 error"); 17281477Smarkm retval = PAM_SERVICE_ERR; 17381477Smarkm goto cleanup3; 17481477Smarkm } 17581477Smarkm 17681477Smarkm PAM_LOG("Done krb5_parse_name()"); 17781477Smarkm 17881477Smarkm /* Now convert the principal name into something human readable */ 17981477Smarkm princ_name = NULL; 18081477Smarkm krbret = krb5_unparse_name(pam_context, princ, &princ_name); 18181477Smarkm if (krbret != 0) { 182106862Snectar PAM_LOG("Error krb5_unparse_name(): %s", 183106862Snectar krb5_get_err_text(pam_context, krbret)); 18481477Smarkm PAM_VERBOSE_ERROR("Kerberos 5 error"); 18581477Smarkm retval = PAM_SERVICE_ERR; 18681477Smarkm goto cleanup2; 18781477Smarkm } 18881477Smarkm 18981477Smarkm PAM_LOG("Got principal: %s", princ_name); 19081477Smarkm 19181477Smarkm /* Get password */ 19293984Sdes retval = pam_get_authtok(pamh, PAM_AUTHTOK, &pass, PASSWORD_PROMPT); 19381477Smarkm if (retval != PAM_SUCCESS) 19481477Smarkm goto cleanup2; 19581477Smarkm 19681477Smarkm PAM_LOG("Got password"); 19781477Smarkm 198207553Smm if (openpam_get_option(pamh, PAM_OPT_NO_USER_CHECK)) 199207553Smm PAM_LOG("Skipping local user check"); 200207553Smm else { 201207553Smm 202207555Smm /* Verify the local user exists (AFTER getting the password) */ 203207555Smm if (strchr(user, '@')) { 204207555Smm /* get a local account name for this principal */ 205207555Smm krbret = krb5_aname_to_localname(pam_context, princ, 206207555Smm sizeof(luser), luser); 207207555Smm if (krbret != 0) { 208207555Smm PAM_VERBOSE_ERROR("Kerberos 5 error"); 209207555Smm PAM_LOG("Error krb5_aname_to_localname(): %s", 210207555Smm krb5_get_err_text(pam_context, krbret)); 211207555Smm retval = PAM_USER_UNKNOWN; 212207555Smm goto cleanup2; 213207555Smm } 214207555Smm 215207555Smm retval = pam_set_item(pamh, PAM_USER, luser); 216207555Smm if (retval != PAM_SUCCESS) 217207555Smm goto cleanup2; 218207555Smm 219207555Smm PAM_LOG("PAM_USER Redone"); 220207555Smm } 221207555Smm 222207555Smm pwd = getpwnam(user); 223207555Smm if (pwd == NULL) { 22481477Smarkm retval = PAM_USER_UNKNOWN; 22581477Smarkm goto cleanup2; 22681477Smarkm } 22781477Smarkm 228207555Smm PAM_LOG("Done getpwnam()"); 22981477Smarkm } 23081477Smarkm 23181477Smarkm /* Get a TGT */ 23281477Smarkm memset(&creds, 0, sizeof(krb5_creds)); 23381477Smarkm krbret = krb5_get_init_creds_password(pam_context, &creds, princ, 23481477Smarkm pass, NULL, pamh, 0, NULL, &opts); 23581477Smarkm if (krbret != 0) { 23681477Smarkm PAM_VERBOSE_ERROR("Kerberos 5 error"); 23781477Smarkm PAM_LOG("Error krb5_get_init_creds_password(): %s", 238106862Snectar krb5_get_err_text(pam_context, krbret)); 23981477Smarkm retval = PAM_AUTH_ERR; 24081477Smarkm goto cleanup2; 24181477Smarkm } 24281477Smarkm 24381477Smarkm PAM_LOG("Got TGT"); 24481477Smarkm 245106864Snectar /* Generate a temporary cache */ 246106864Snectar krbret = krb5_cc_gen_new(pam_context, &krb5_mcc_ops, &ccache); 24781477Smarkm if (krbret != 0) { 24881477Smarkm PAM_VERBOSE_ERROR("Kerberos 5 error"); 249106864Snectar PAM_LOG("Error krb5_cc_gen_new(): %s", 250106862Snectar krb5_get_err_text(pam_context, krbret)); 25181477Smarkm retval = PAM_SERVICE_ERR; 25281477Smarkm goto cleanup; 25381477Smarkm } 25481477Smarkm krbret = krb5_cc_initialize(pam_context, ccache, princ); 25581477Smarkm if (krbret != 0) { 25681477Smarkm PAM_VERBOSE_ERROR("Kerberos 5 error"); 257106862Snectar PAM_LOG("Error krb5_cc_initialize(): %s", 258106862Snectar krb5_get_err_text(pam_context, krbret)); 25981477Smarkm retval = PAM_SERVICE_ERR; 26081477Smarkm goto cleanup; 26181477Smarkm } 26281477Smarkm krbret = krb5_cc_store_cred(pam_context, ccache, &creds); 26381477Smarkm if (krbret != 0) { 26481477Smarkm PAM_VERBOSE_ERROR("Kerberos 5 error"); 265106862Snectar PAM_LOG("Error krb5_cc_store_cred(): %s", 266106862Snectar krb5_get_err_text(pam_context, krbret)); 26781477Smarkm krb5_cc_destroy(pam_context, ccache); 26881477Smarkm retval = PAM_SERVICE_ERR; 26981477Smarkm goto cleanup; 27081477Smarkm } 27181477Smarkm 27281477Smarkm PAM_LOG("Credentials stashed"); 27381477Smarkm 27481477Smarkm /* Verify them */ 27593984Sdes if ((srvdup = strdup(service)) == NULL) { 27693984Sdes retval = PAM_BUF_ERR; 27793984Sdes goto cleanup; 27893984Sdes } 27993984Sdes krbret = verify_krb_v5_tgt(pam_context, ccache, srvdup, 280140667Srwatson openpam_get_option(pamh, PAM_OPT_DEBUG) ? 1 : 0); 28193984Sdes free(srvdup); 28293984Sdes if (krbret == -1) { 28381477Smarkm PAM_VERBOSE_ERROR("Kerberos 5 error"); 28481477Smarkm krb5_cc_destroy(pam_context, ccache); 28581477Smarkm retval = PAM_AUTH_ERR; 28681477Smarkm goto cleanup; 28781477Smarkm } 28881477Smarkm 28981477Smarkm PAM_LOG("Credentials stash verified"); 29081477Smarkm 291125650Sdes retval = pam_get_data(pamh, "ccache", &ccache_data); 29281477Smarkm if (retval == PAM_SUCCESS) { 29381477Smarkm krb5_cc_destroy(pam_context, ccache); 29481477Smarkm PAM_VERBOSE_ERROR("Kerberos 5 error"); 29581477Smarkm retval = PAM_AUTH_ERR; 29681477Smarkm goto cleanup; 29781477Smarkm } 29881477Smarkm 29981477Smarkm PAM_LOG("Credentials stash not pre-existing"); 30081477Smarkm 301106864Snectar asprintf(&ccache_name, "%s:%s", krb5_cc_get_type(pam_context, 302106864Snectar ccache), krb5_cc_get_name(pam_context, ccache)); 303106864Snectar if (ccache_name == NULL) { 304106864Snectar PAM_VERBOSE_ERROR("Kerberos 5 error"); 305106864Snectar retval = PAM_BUF_ERR; 306106864Snectar goto cleanup; 307106864Snectar } 308106864Snectar retval = pam_set_data(pamh, "ccache", ccache_name, cleanup_cache); 30981477Smarkm if (retval != 0) { 31081477Smarkm krb5_cc_destroy(pam_context, ccache); 31181477Smarkm PAM_VERBOSE_ERROR("Kerberos 5 error"); 31281477Smarkm retval = PAM_SERVICE_ERR; 31381477Smarkm goto cleanup; 31481477Smarkm } 31581477Smarkm 31681477Smarkm PAM_LOG("Credentials stash saved"); 31781477Smarkm 31881477Smarkmcleanup: 31981477Smarkm krb5_free_cred_contents(pam_context, &creds); 32081477Smarkm PAM_LOG("Done cleanup"); 32181477Smarkmcleanup2: 32281477Smarkm krb5_free_principal(pam_context, princ); 32381477Smarkm if (princ_name) 32481477Smarkm free(princ_name); 325239520Sdim PAM_LOG("Done cleanup2"); 32681477Smarkm 327239520Sdimcleanup3: 32881477Smarkm krb5_free_context(pam_context); 32981477Smarkm 33081477Smarkm PAM_LOG("Done cleanup3"); 33181477Smarkm 33281477Smarkm if (retval != PAM_SUCCESS) 33381477Smarkm PAM_VERBOSE_ERROR("Kerberos 5 refuses you"); 33481477Smarkm 33594564Sdes return (retval); 33681477Smarkm} 33781477Smarkm 33881477SmarkmPAM_EXTERN int 33994564Sdespam_sm_setcred(pam_handle_t *pamh, int flags, 340115465Sdes int argc __unused, const char *argv[] __unused) 34181477Smarkm{ 342147810Skensmith#ifdef _FREEFALL_CONFIG 343147810Skensmith return (PAM_SUCCESS); 344147810Skensmith#else 34581477Smarkm 34681477Smarkm krb5_error_code krbret; 34781477Smarkm krb5_context pam_context; 34881477Smarkm krb5_principal princ; 34981477Smarkm krb5_creds creds; 35081477Smarkm krb5_ccache ccache_temp, ccache_perm; 35181477Smarkm krb5_cc_cursor cursor; 35281477Smarkm struct passwd *pwd = NULL; 35381477Smarkm int retval; 354123454Sdes const char *cache_name, *q; 355125650Sdes const void *user; 356174837Sdes const void *cache_data; 357115465Sdes char *cache_name_buf = NULL, *p; 35881477Smarkm 35981477Smarkm uid_t euid; 36081477Smarkm gid_t egid; 36181477Smarkm 36281477Smarkm if (flags & PAM_DELETE_CRED) 36394564Sdes return (PAM_SUCCESS); 36481477Smarkm 36581477Smarkm if (flags & PAM_REFRESH_CRED) 36694564Sdes return (PAM_SUCCESS); 36781477Smarkm 36881477Smarkm if (flags & PAM_REINITIALIZE_CRED) 36994564Sdes return (PAM_SUCCESS); 37081477Smarkm 37181477Smarkm if (!(flags & PAM_ESTABLISH_CRED)) 37294564Sdes return (PAM_SERVICE_ERR); 37381477Smarkm 374140747Srwatson /* If a persistent cache isn't desired, stop now. */ 375207553Smm if (openpam_get_option(pamh, PAM_OPT_NO_CCACHE) || 376207553Smm openpam_get_option(pamh, PAM_OPT_NO_USER_CHECK)) 377140747Srwatson return (PAM_SUCCESS); 378140747Srwatson 37981477Smarkm PAM_LOG("Establishing credentials"); 38081477Smarkm 38181477Smarkm /* Get username */ 382123454Sdes retval = pam_get_item(pamh, PAM_USER, &user); 38381477Smarkm if (retval != PAM_SUCCESS) 38494564Sdes return (retval); 38581477Smarkm 386123454Sdes PAM_LOG("Got user: %s", (const char *)user); 38781477Smarkm 38881477Smarkm krbret = krb5_init_context(&pam_context); 38981477Smarkm if (krbret != 0) { 390106862Snectar PAM_LOG("Error krb5_init_context() failed"); 39194564Sdes return (PAM_SERVICE_ERR); 39281477Smarkm } 39381477Smarkm 39481477Smarkm PAM_LOG("Context initialised"); 39581477Smarkm 39681477Smarkm euid = geteuid(); /* Usually 0 */ 39781477Smarkm egid = getegid(); 39881477Smarkm 39981477Smarkm PAM_LOG("Got euid, egid: %d %d", euid, egid); 40081477Smarkm 401106864Snectar /* Retrieve the temporary cache */ 402123454Sdes retval = pam_get_data(pamh, "ccache", &cache_data); 403110056Snectar if (retval != PAM_SUCCESS) { 404110056Snectar retval = PAM_CRED_UNAVAIL; 40581477Smarkm goto cleanup3; 406110056Snectar } 407123454Sdes krbret = krb5_cc_resolve(pam_context, cache_data, &ccache_temp); 408106864Snectar if (krbret != 0) { 409123454Sdes PAM_LOG("Error krb5_cc_resolve(\"%s\"): %s", (const char *)cache_data, 410106864Snectar krb5_get_err_text(pam_context, krbret)); 411110056Snectar retval = PAM_SERVICE_ERR; 412106864Snectar goto cleanup3; 413106864Snectar } 41481477Smarkm 41581477Smarkm /* Get the uid. This should exist. */ 41681477Smarkm pwd = getpwnam(user); 41781477Smarkm if (pwd == NULL) { 41881477Smarkm retval = PAM_USER_UNKNOWN; 41981477Smarkm goto cleanup3; 42081477Smarkm } 42181477Smarkm 42281477Smarkm PAM_LOG("Done getpwnam()"); 42381477Smarkm 42481477Smarkm /* Avoid following a symlink as root */ 42581477Smarkm if (setegid(pwd->pw_gid)) { 42681477Smarkm retval = PAM_SERVICE_ERR; 42781477Smarkm goto cleanup3; 42881477Smarkm } 42981477Smarkm if (seteuid(pwd->pw_uid)) { 43081477Smarkm retval = PAM_SERVICE_ERR; 43181477Smarkm goto cleanup3; 43281477Smarkm } 43381477Smarkm 43481477Smarkm PAM_LOG("Done setegid() & seteuid()"); 43581477Smarkm 43681477Smarkm /* Get the cache name */ 437115465Sdes cache_name = openpam_get_option(pamh, PAM_OPT_CCACHE); 438115465Sdes if (cache_name == NULL) { 439115465Sdes asprintf(&cache_name_buf, "FILE:/tmp/krb5cc_%d", pwd->pw_uid); 440115465Sdes cache_name = cache_name_buf; 441115465Sdes } 44281477Smarkm 44381477Smarkm p = calloc(PATH_MAX + 16, sizeof(char)); 44481477Smarkm q = cache_name; 44581477Smarkm 44681477Smarkm if (p == NULL) { 44781477Smarkm PAM_LOG("Error malloc(): failure"); 44881477Smarkm retval = PAM_BUF_ERR; 44981477Smarkm goto cleanup3; 45081477Smarkm } 45181477Smarkm cache_name = p; 45281477Smarkm 45381477Smarkm /* convert %u and %p */ 45481477Smarkm while (*q) { 45581477Smarkm if (*q == '%') { 45681477Smarkm q++; 45781477Smarkm if (*q == 'u') { 45881477Smarkm sprintf(p, "%d", pwd->pw_uid); 45981477Smarkm p += strlen(p); 46081477Smarkm } 46181477Smarkm else if (*q == 'p') { 46281477Smarkm sprintf(p, "%d", getpid()); 46381477Smarkm p += strlen(p); 46481477Smarkm } 46581477Smarkm else { 46681477Smarkm /* Not a special token */ 46781477Smarkm *p++ = '%'; 46881477Smarkm q--; 46981477Smarkm } 47081477Smarkm q++; 47181477Smarkm } 47281477Smarkm else { 47381477Smarkm *p++ = *q++; 47481477Smarkm } 47581477Smarkm } 47681477Smarkm 47781477Smarkm PAM_LOG("Got cache_name: %s", cache_name); 47881477Smarkm 47981477Smarkm /* Initialize the new ccache */ 48081477Smarkm krbret = krb5_cc_get_principal(pam_context, ccache_temp, &princ); 48181477Smarkm if (krbret != 0) { 48281477Smarkm PAM_LOG("Error krb5_cc_get_principal(): %s", 483106862Snectar krb5_get_err_text(pam_context, krbret)); 48481477Smarkm retval = PAM_SERVICE_ERR; 48581477Smarkm goto cleanup3; 48681477Smarkm } 48781477Smarkm krbret = krb5_cc_resolve(pam_context, cache_name, &ccache_perm); 48881477Smarkm if (krbret != 0) { 489106862Snectar PAM_LOG("Error krb5_cc_resolve(): %s", 490106862Snectar krb5_get_err_text(pam_context, krbret)); 49181477Smarkm retval = PAM_SERVICE_ERR; 49281477Smarkm goto cleanup2; 49381477Smarkm } 49481477Smarkm krbret = krb5_cc_initialize(pam_context, ccache_perm, princ); 49581477Smarkm if (krbret != 0) { 496106862Snectar PAM_LOG("Error krb5_cc_initialize(): %s", 497106862Snectar krb5_get_err_text(pam_context, krbret)); 49881477Smarkm retval = PAM_SERVICE_ERR; 49981477Smarkm goto cleanup2; 50081477Smarkm } 50181477Smarkm 50281477Smarkm PAM_LOG("Cache initialised"); 50381477Smarkm 50481477Smarkm /* Prepare for iteration over creds */ 50581477Smarkm krbret = krb5_cc_start_seq_get(pam_context, ccache_temp, &cursor); 50681477Smarkm if (krbret != 0) { 507106862Snectar PAM_LOG("Error krb5_cc_start_seq_get(): %s", 508106862Snectar krb5_get_err_text(pam_context, krbret)); 50981477Smarkm krb5_cc_destroy(pam_context, ccache_perm); 51081477Smarkm retval = PAM_SERVICE_ERR; 51181477Smarkm goto cleanup2; 51281477Smarkm } 51381477Smarkm 51481477Smarkm PAM_LOG("Prepared for iteration"); 51581477Smarkm 51681477Smarkm /* Copy the creds (should be two of them) */ 51781477Smarkm while ((krbret = krb5_cc_next_cred(pam_context, ccache_temp, 51881477Smarkm &cursor, &creds) == 0)) { 51981477Smarkm krbret = krb5_cc_store_cred(pam_context, ccache_perm, &creds); 52081477Smarkm if (krbret != 0) { 52181477Smarkm PAM_LOG("Error krb5_cc_store_cred(): %s", 522106862Snectar krb5_get_err_text(pam_context, krbret)); 52381477Smarkm krb5_cc_destroy(pam_context, ccache_perm); 52481477Smarkm krb5_free_cred_contents(pam_context, &creds); 52581477Smarkm retval = PAM_SERVICE_ERR; 52681477Smarkm goto cleanup2; 52781477Smarkm } 52881477Smarkm krb5_free_cred_contents(pam_context, &creds); 52981477Smarkm PAM_LOG("Iteration"); 53081477Smarkm } 53181477Smarkm krb5_cc_end_seq_get(pam_context, ccache_temp, &cursor); 53281477Smarkm 53381477Smarkm PAM_LOG("Done iterating"); 53481477Smarkm 53581477Smarkm if (strstr(cache_name, "FILE:") == cache_name) { 53681477Smarkm if (chown(&cache_name[5], pwd->pw_uid, pwd->pw_gid) == -1) { 53781477Smarkm PAM_LOG("Error chown(): %s", strerror(errno)); 53881477Smarkm krb5_cc_destroy(pam_context, ccache_perm); 53981477Smarkm retval = PAM_SERVICE_ERR; 54081477Smarkm goto cleanup2; 54181477Smarkm } 54281477Smarkm PAM_LOG("Done chown()"); 54381477Smarkm 54481477Smarkm if (chmod(&cache_name[5], (S_IRUSR | S_IWUSR)) == -1) { 54581477Smarkm PAM_LOG("Error chmod(): %s", strerror(errno)); 54681477Smarkm krb5_cc_destroy(pam_context, ccache_perm); 54781477Smarkm retval = PAM_SERVICE_ERR; 54881477Smarkm goto cleanup2; 54981477Smarkm } 55081477Smarkm PAM_LOG("Done chmod()"); 55181477Smarkm } 55281477Smarkm 55381477Smarkm krb5_cc_close(pam_context, ccache_perm); 55481477Smarkm 55581477Smarkm PAM_LOG("Cache closed"); 55681477Smarkm 557115465Sdes retval = pam_setenv(pamh, "KRB5CCNAME", cache_name, 1); 558115465Sdes if (retval != PAM_SUCCESS) { 559115465Sdes PAM_LOG("Error pam_setenv(): %s", pam_strerror(pamh, retval)); 56081477Smarkm krb5_cc_destroy(pam_context, ccache_perm); 56181477Smarkm retval = PAM_SERVICE_ERR; 56281477Smarkm goto cleanup2; 56381477Smarkm } 56481477Smarkm 56581477Smarkm PAM_LOG("Environment done: KRB5CCNAME=%s", cache_name); 56681477Smarkm 56781477Smarkmcleanup2: 56881477Smarkm krb5_free_principal(pam_context, princ); 56981477Smarkm PAM_LOG("Done cleanup2"); 57081477Smarkmcleanup3: 57181477Smarkm krb5_free_context(pam_context); 57281477Smarkm PAM_LOG("Done cleanup3"); 57381477Smarkm 57481477Smarkm seteuid(euid); 57581477Smarkm setegid(egid); 57681477Smarkm 57781477Smarkm PAM_LOG("Done seteuid() & setegid()"); 57894564Sdes 579115465Sdes if (cache_name_buf != NULL) 580115465Sdes free(cache_name_buf); 581115465Sdes 58294564Sdes return (retval); 583147810Skensmith#endif 58481477Smarkm} 58581477Smarkm 58694564Sdes/* 58781477Smarkm * account management 58881477Smarkm */ 58981477SmarkmPAM_EXTERN int 59094564Sdespam_sm_acct_mgmt(pam_handle_t *pamh, int flags __unused, 591115465Sdes int argc __unused, const char *argv[] __unused) 59281477Smarkm{ 59381477Smarkm krb5_error_code krbret; 59481477Smarkm krb5_context pam_context; 59581477Smarkm krb5_ccache ccache; 59681477Smarkm krb5_principal princ; 59781477Smarkm int retval; 598125650Sdes const void *user; 599174837Sdes const void *ccache_name; 60081477Smarkm 601123454Sdes retval = pam_get_item(pamh, PAM_USER, &user); 60281477Smarkm if (retval != PAM_SUCCESS) 60394564Sdes return (retval); 60481477Smarkm 605123454Sdes PAM_LOG("Got user: %s", (const char *)user); 60681477Smarkm 607123454Sdes retval = pam_get_data(pamh, "ccache", &ccache_name); 608110275Sdes if (retval != PAM_SUCCESS) 609110275Sdes return (PAM_SUCCESS); 610110275Sdes 611110275Sdes PAM_LOG("Got credentials"); 612110275Sdes 61381477Smarkm krbret = krb5_init_context(&pam_context); 61481477Smarkm if (krbret != 0) { 615106862Snectar PAM_LOG("Error krb5_init_context() failed"); 61694564Sdes return (PAM_PERM_DENIED); 61781477Smarkm } 61881477Smarkm 61981477Smarkm PAM_LOG("Context initialised"); 62081477Smarkm 621123454Sdes krbret = krb5_cc_resolve(pam_context, (const char *)ccache_name, &ccache); 622106864Snectar if (krbret != 0) { 623123454Sdes PAM_LOG("Error krb5_cc_resolve(\"%s\"): %s", (const char *)ccache_name, 624106864Snectar krb5_get_err_text(pam_context, krbret)); 625106864Snectar krb5_free_context(pam_context); 626106864Snectar return (PAM_PERM_DENIED); 627106864Snectar } 628106864Snectar 629123454Sdes PAM_LOG("Got ccache %s", (const char *)ccache_name); 630106864Snectar 631106864Snectar 63281477Smarkm krbret = krb5_cc_get_principal(pam_context, ccache, &princ); 63381477Smarkm if (krbret != 0) { 634106862Snectar PAM_LOG("Error krb5_cc_get_principal(): %s", 635106862Snectar krb5_get_err_text(pam_context, krbret)); 636242544Seadler retval = PAM_PERM_DENIED; 63781477Smarkm goto cleanup; 63881477Smarkm } 63981477Smarkm 64081477Smarkm PAM_LOG("Got principal"); 64181477Smarkm 642123454Sdes if (krb5_kuserok(pam_context, princ, (const char *)user)) 64381477Smarkm retval = PAM_SUCCESS; 64481477Smarkm else 64581477Smarkm retval = PAM_PERM_DENIED; 64681477Smarkm krb5_free_principal(pam_context, princ); 64781477Smarkm 64881477Smarkm PAM_LOG("Done kuserok()"); 64981477Smarkm 65081477Smarkmcleanup: 65181477Smarkm krb5_free_context(pam_context); 65281477Smarkm PAM_LOG("Done cleanup"); 65381477Smarkm 65494564Sdes return (retval); 65581477Smarkm 65681477Smarkm} 65781477Smarkm 65894564Sdes/* 65981477Smarkm * password management 66081477Smarkm */ 66181477SmarkmPAM_EXTERN int 66294564Sdespam_sm_chauthtok(pam_handle_t *pamh, int flags, 663115465Sdes int argc __unused, const char *argv[] __unused) 66481477Smarkm{ 66581477Smarkm krb5_error_code krbret; 66681477Smarkm krb5_context pam_context; 66781477Smarkm krb5_creds creds; 66881477Smarkm krb5_principal princ; 66981477Smarkm krb5_get_init_creds_opt opts; 67081477Smarkm krb5_data result_code_string, result_string; 67181477Smarkm int result_code, retval; 672123454Sdes const char *pass; 673123454Sdes const void *user; 67493984Sdes char *princ_name, *passdup; 67581477Smarkm 67681477Smarkm if (!(flags & PAM_UPDATE_AUTHTOK)) 67794564Sdes return (PAM_AUTHTOK_ERR); 67881477Smarkm 679123454Sdes retval = pam_get_item(pamh, PAM_USER, &user); 68081477Smarkm if (retval != PAM_SUCCESS) 68194564Sdes return (retval); 68281477Smarkm 683123454Sdes PAM_LOG("Got user: %s", (const char *)user); 68481477Smarkm 68581477Smarkm krbret = krb5_init_context(&pam_context); 68681477Smarkm if (krbret != 0) { 687106862Snectar PAM_LOG("Error krb5_init_context() failed"); 68894564Sdes return (PAM_SERVICE_ERR); 68981477Smarkm } 69081477Smarkm 69181477Smarkm PAM_LOG("Context initialised"); 69281477Smarkm 69381477Smarkm krb5_get_init_creds_opt_init(&opts); 69481477Smarkm 69581477Smarkm PAM_LOG("Credentials options initialised"); 69681477Smarkm 69781477Smarkm /* Get principal name */ 698123454Sdes krbret = krb5_parse_name(pam_context, (const char *)user, &princ); 69981477Smarkm if (krbret != 0) { 700106862Snectar PAM_LOG("Error krb5_parse_name(): %s", 701106862Snectar krb5_get_err_text(pam_context, krbret)); 70281477Smarkm retval = PAM_USER_UNKNOWN; 70381477Smarkm goto cleanup3; 70481477Smarkm } 70581477Smarkm 70681477Smarkm /* Now convert the principal name into something human readable */ 70781477Smarkm princ_name = NULL; 70881477Smarkm krbret = krb5_unparse_name(pam_context, princ, &princ_name); 70981477Smarkm if (krbret != 0) { 710106862Snectar PAM_LOG("Error krb5_unparse_name(): %s", 711106862Snectar krb5_get_err_text(pam_context, krbret)); 71281477Smarkm retval = PAM_SERVICE_ERR; 71381477Smarkm goto cleanup2; 71481477Smarkm } 71581477Smarkm 71681477Smarkm PAM_LOG("Got principal: %s", princ_name); 71781477Smarkm 71881477Smarkm /* Get password */ 71993984Sdes retval = pam_get_authtok(pamh, PAM_OLDAUTHTOK, &pass, PASSWORD_PROMPT); 72081477Smarkm if (retval != PAM_SUCCESS) 72181477Smarkm goto cleanup2; 72281477Smarkm 72381477Smarkm PAM_LOG("Got password"); 72481477Smarkm 72581477Smarkm memset(&creds, 0, sizeof(krb5_creds)); 72681477Smarkm krbret = krb5_get_init_creds_password(pam_context, &creds, princ, 72781477Smarkm pass, NULL, pamh, 0, "kadmin/changepw", &opts); 72881477Smarkm if (krbret != 0) { 729125650Sdes PAM_LOG("Error krb5_get_init_creds_password(): %s", 730106862Snectar krb5_get_err_text(pam_context, krbret)); 73181477Smarkm retval = PAM_AUTH_ERR; 73281477Smarkm goto cleanup2; 73381477Smarkm } 73481477Smarkm 73581477Smarkm PAM_LOG("Credentials established"); 73681477Smarkm 73781477Smarkm /* Now get the new password */ 73893984Sdes for (;;) { 73993984Sdes retval = pam_get_authtok(pamh, 74093984Sdes PAM_AUTHTOK, &pass, NEW_PASSWORD_PROMPT); 74193984Sdes if (retval != PAM_TRY_AGAIN) 74293984Sdes break; 74393984Sdes pam_error(pamh, "Mismatch; try again, EOF to quit."); 74493984Sdes } 74581477Smarkm if (retval != PAM_SUCCESS) 74681477Smarkm goto cleanup; 74781477Smarkm 74893984Sdes PAM_LOG("Got new password"); 74981477Smarkm 75093984Sdes /* Change it */ 75193984Sdes if ((passdup = strdup(pass)) == NULL) { 75293984Sdes retval = PAM_BUF_ERR; 75381477Smarkm goto cleanup; 75481477Smarkm } 75593984Sdes krbret = krb5_change_password(pam_context, &creds, passdup, 75681477Smarkm &result_code, &result_code_string, &result_string); 75793984Sdes free(passdup); 75881477Smarkm if (krbret != 0) { 75981477Smarkm PAM_LOG("Error krb5_change_password(): %s", 760106862Snectar krb5_get_err_text(pam_context, krbret)); 76181477Smarkm retval = PAM_AUTHTOK_ERR; 76281477Smarkm goto cleanup; 76381477Smarkm } 76481477Smarkm if (result_code) { 76581477Smarkm PAM_LOG("Error krb5_change_password(): (result_code)"); 76681477Smarkm retval = PAM_AUTHTOK_ERR; 76781477Smarkm goto cleanup; 76881477Smarkm } 76981477Smarkm 77081477Smarkm PAM_LOG("Password changed"); 77181477Smarkm 77281477Smarkm if (result_string.data) 77381477Smarkm free(result_string.data); 77481477Smarkm if (result_code_string.data) 77581477Smarkm free(result_code_string.data); 77681477Smarkm 77781477Smarkmcleanup: 77881477Smarkm krb5_free_cred_contents(pam_context, &creds); 77981477Smarkm PAM_LOG("Done cleanup"); 78081477Smarkmcleanup2: 78181477Smarkm krb5_free_principal(pam_context, princ); 78281477Smarkm if (princ_name) 78381477Smarkm free(princ_name); 784239520Sdim PAM_LOG("Done cleanup2"); 78581477Smarkm 786239520Sdimcleanup3: 78781477Smarkm krb5_free_context(pam_context); 78881477Smarkm 78981477Smarkm PAM_LOG("Done cleanup3"); 79081477Smarkm 79194564Sdes return (retval); 79281477Smarkm} 79381477Smarkm 79481477SmarkmPAM_MODULE_ENTRY("pam_krb5"); 79581477Smarkm 79681477Smarkm/* 79781477Smarkm * This routine with some modification is from the MIT V5B6 appl/bsd/login.c 79881477Smarkm * Modified by Sam Hartman <hartmans@mit.edu> to support PAM services 79981477Smarkm * for Debian. 80081477Smarkm * 80181477Smarkm * Verify the Kerberos ticket-granting ticket just retrieved for the 80281477Smarkm * user. If the Kerberos server doesn't respond, assume the user is 80381477Smarkm * trying to fake us out (since we DID just get a TGT from what is 80481477Smarkm * supposedly our KDC). If the host/<host> service is unknown (i.e., 80581477Smarkm * the local keytab doesn't have it), and we cannot find another 80681477Smarkm * service we do have, let her in. 80781477Smarkm * 80881477Smarkm * Returns 1 for confirmation, -1 for failure, 0 for uncertainty. 80981477Smarkm */ 810111985Smarkm/* ARGSUSED */ 81181477Smarkmstatic int 81281477Smarkmverify_krb_v5_tgt(krb5_context context, krb5_ccache ccache, 81381477Smarkm char *pam_service, int debug) 81481477Smarkm{ 81581477Smarkm krb5_error_code retval; 81681477Smarkm krb5_principal princ; 81781477Smarkm krb5_keyblock *keyblock; 81881477Smarkm krb5_data packet; 81981477Smarkm krb5_auth_context auth_context; 82089760Smarkm char phost[BUFSIZ]; 82189760Smarkm const char *services[3], **service; 82281477Smarkm 82381477Smarkm packet.data = 0; 82481477Smarkm 82581477Smarkm /* If possible we want to try and verify the ticket we have 82681477Smarkm * received against a keytab. We will try multiple service 82781477Smarkm * principals, including at least the host principal and the PAM 82881477Smarkm * service principal. The host principal is preferred because access 82981477Smarkm * to that key is generally sufficient to compromise root, while the 83081477Smarkm * service key for this PAM service may be less carefully guarded. 83181477Smarkm * It is important to check the keytab first before the KDC so we do 83281477Smarkm * not get spoofed by a fake KDC. 83381477Smarkm */ 83481477Smarkm services[0] = "host"; 83581477Smarkm services[1] = pam_service; 83681477Smarkm services[2] = NULL; 83781477Smarkm keyblock = 0; 83881477Smarkm retval = -1; 83981477Smarkm for (service = &services[0]; *service != NULL; service++) { 84081477Smarkm retval = krb5_sname_to_principal(context, NULL, *service, 84181477Smarkm KRB5_NT_SRV_HST, &princ); 84281477Smarkm if (retval != 0) { 84381477Smarkm if (debug) 844106862Snectar syslog(LOG_DEBUG, 845106862Snectar "pam_krb5: verify_krb_v5_tgt(): %s: %s", 846106862Snectar "krb5_sname_to_principal()", 847106862Snectar krb5_get_err_text(context, retval)); 84881477Smarkm return -1; 84981477Smarkm } 85081477Smarkm 85181477Smarkm /* Extract the name directly. */ 85281477Smarkm strncpy(phost, compat_princ_component(context, princ, 1), 85381477Smarkm BUFSIZ); 85481477Smarkm phost[BUFSIZ - 1] = '\0'; 85581477Smarkm 85681477Smarkm /* 85794564Sdes * Do we have service/<host> keys? 85894564Sdes * (use default/configured keytab, kvno IGNORE_VNO to get the 85994564Sdes * first match, and ignore enctype.) 86094564Sdes */ 86181477Smarkm retval = krb5_kt_read_service_key(context, NULL, princ, 0, 0, 86281477Smarkm &keyblock); 86381477Smarkm if (retval != 0) 86481477Smarkm continue; 86581477Smarkm break; 86681477Smarkm } 86781477Smarkm if (retval != 0) { /* failed to find key */ 86881477Smarkm /* Keytab or service key does not exist */ 86981477Smarkm if (debug) 870106862Snectar syslog(LOG_DEBUG, 871106862Snectar "pam_krb5: verify_krb_v5_tgt(): %s: %s", 872106862Snectar "krb5_kt_read_service_key()", 873106862Snectar krb5_get_err_text(context, retval)); 87481477Smarkm retval = 0; 87581477Smarkm goto cleanup; 87681477Smarkm } 87781477Smarkm if (keyblock) 87881477Smarkm krb5_free_keyblock(context, keyblock); 87981477Smarkm 88081477Smarkm /* Talk to the kdc and construct the ticket. */ 88181477Smarkm auth_context = NULL; 88281477Smarkm retval = krb5_mk_req(context, &auth_context, 0, *service, phost, 88381477Smarkm NULL, ccache, &packet); 88481477Smarkm if (auth_context) { 88581477Smarkm krb5_auth_con_free(context, auth_context); 88681477Smarkm auth_context = NULL; /* setup for rd_req */ 88781477Smarkm } 88881477Smarkm if (retval) { 88981477Smarkm if (debug) 890106862Snectar syslog(LOG_DEBUG, 891106862Snectar "pam_krb5: verify_krb_v5_tgt(): %s: %s", 892106862Snectar "krb5_mk_req()", 893106862Snectar krb5_get_err_text(context, retval)); 89481477Smarkm retval = -1; 89581477Smarkm goto cleanup; 89681477Smarkm } 89781477Smarkm 89881477Smarkm /* Try to use the ticket. */ 89981477Smarkm retval = krb5_rd_req(context, &auth_context, &packet, princ, NULL, 90081477Smarkm NULL, NULL); 90181477Smarkm if (retval) { 90281477Smarkm if (debug) 903106862Snectar syslog(LOG_DEBUG, 904106862Snectar "pam_krb5: verify_krb_v5_tgt(): %s: %s", 905106862Snectar "krb5_rd_req()", 906106862Snectar krb5_get_err_text(context, retval)); 90781477Smarkm retval = -1; 90881477Smarkm } 90981477Smarkm else 91081477Smarkm retval = 1; 91181477Smarkm 91281477Smarkmcleanup: 91381477Smarkm if (packet.data) 91481477Smarkm compat_free_data_contents(context, &packet); 91581477Smarkm krb5_free_principal(context, princ); 91681477Smarkm return retval; 91781477Smarkm} 91881477Smarkm 91981477Smarkm/* Free the memory for cache_name. Called by pam_end() */ 920111985Smarkm/* ARGSUSED */ 92181477Smarkmstatic void 92289760Smarkmcleanup_cache(pam_handle_t *pamh __unused, void *data, int pam_end_status __unused) 92381477Smarkm{ 92481477Smarkm krb5_context pam_context; 92581477Smarkm krb5_ccache ccache; 926106864Snectar krb5_error_code krbret; 92781477Smarkm 92881477Smarkm if (krb5_init_context(&pam_context)) 92981477Smarkm return; 93081477Smarkm 931106864Snectar krbret = krb5_cc_resolve(pam_context, data, &ccache); 932106864Snectar if (krbret == 0) 933106864Snectar krb5_cc_destroy(pam_context, ccache); 93481477Smarkm krb5_free_context(pam_context); 935106864Snectar free(data); 93681477Smarkm} 93781477Smarkm 93881477Smarkm#ifdef COMPAT_HEIMDAL 93981477Smarkm#ifdef COMPAT_MIT 94081477Smarkm#error This cannot be MIT and Heimdal compatible! 94181477Smarkm#endif 94281477Smarkm#endif 94381477Smarkm 94481477Smarkm#ifndef COMPAT_HEIMDAL 94581477Smarkm#ifndef COMPAT_MIT 94681477Smarkm#error One of COMPAT_MIT and COMPAT_HEIMDAL must be specified! 94781477Smarkm#endif 94881477Smarkm#endif 94981477Smarkm 95081477Smarkm#ifdef COMPAT_HEIMDAL 951111985Smarkm/* ARGSUSED */ 95281477Smarkmstatic const char * 95389760Smarkmcompat_princ_component(krb5_context context __unused, krb5_principal princ, int n) 95481477Smarkm{ 95581477Smarkm return princ->name.name_string.val[n]; 95681477Smarkm} 95781477Smarkm 958111985Smarkm/* ARGSUSED */ 95981477Smarkmstatic void 96089760Smarkmcompat_free_data_contents(krb5_context context __unused, krb5_data * data) 96181477Smarkm{ 96281477Smarkm krb5_xfree(data->data); 96381477Smarkm} 96481477Smarkm#endif 96581477Smarkm 96681477Smarkm#ifdef COMPAT_MIT 96781477Smarkmstatic const char * 96881477Smarkmcompat_princ_component(krb5_context context, krb5_principal princ, int n) 96981477Smarkm{ 97081477Smarkm return krb5_princ_component(context, princ, n)->data; 97181477Smarkm} 97281477Smarkm 97381477Smarkmstatic void 97481477Smarkmcompat_free_data_contents(krb5_context context, krb5_data * data) 97581477Smarkm{ 97681477Smarkm krb5_free_data_contents(context, data); 97781477Smarkm} 97881477Smarkm#endif 979