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: releng/10.2/lib/libpam/modules/pam_krb5/pam_krb5.c 241844 2012-10-22 03:00:37Z eadler $"); 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" 94239062Sdfr#define PAM_OPT_NO_USER_CHECK "no_user_check" 9581477Smarkm 96233406Sstas#define PAM_LOG_KRB5_ERR(ctx, rv, fmt, ...) \ 97233406Sstas do { \ 98233406Sstas const char *krb5msg = krb5_get_error_message(ctx, rv); \ 99233406Sstas PAM_LOG(fmt ": %s", ##__VA_ARGS__, krb5msg); \ 100233406Sstas krb5_free_error_message(ctx, krb5msg); \ 101233406Sstas } while (0) 102233406Sstas 10381477Smarkm/* 10481477Smarkm * authentication management 10581477Smarkm */ 10681477SmarkmPAM_EXTERN int 10794564Sdespam_sm_authenticate(pam_handle_t *pamh, int flags __unused, 108115465Sdes int argc __unused, const char *argv[] __unused) 10981477Smarkm{ 11081477Smarkm krb5_error_code krbret; 11181477Smarkm krb5_context pam_context; 11281477Smarkm krb5_creds creds; 11381477Smarkm krb5_principal princ; 114106864Snectar krb5_ccache ccache; 115233406Sstas krb5_get_init_creds_opt *opts; 11681477Smarkm struct passwd *pwd; 11781477Smarkm int retval; 118174837Sdes const void *ccache_data; 119123454Sdes const char *user, *pass; 120125650Sdes const void *sourceuser, *service; 121106864Snectar char *principal, *princ_name, *ccache_name, luser[32], *srvdup; 12281477Smarkm 12381477Smarkm retval = pam_get_user(pamh, &user, USER_PROMPT); 12481477Smarkm if (retval != PAM_SUCCESS) 12594564Sdes return (retval); 12681477Smarkm 12781477Smarkm PAM_LOG("Got user: %s", user); 12881477Smarkm 129123454Sdes retval = pam_get_item(pamh, PAM_RUSER, &sourceuser); 13081477Smarkm if (retval != PAM_SUCCESS) 13194564Sdes return (retval); 13281477Smarkm 133123454Sdes PAM_LOG("Got ruser: %s", (const char *)sourceuser); 13481477Smarkm 13581477Smarkm service = NULL; 136123454Sdes pam_get_item(pamh, PAM_SERVICE, &service); 13781477Smarkm if (service == NULL) 13881477Smarkm service = "unknown"; 13981477Smarkm 140123454Sdes PAM_LOG("Got service: %s", (const char *)service); 14181477Smarkm 14281477Smarkm krbret = krb5_init_context(&pam_context); 14381477Smarkm if (krbret != 0) { 14481477Smarkm PAM_VERBOSE_ERROR("Kerberos 5 error"); 14594564Sdes return (PAM_SERVICE_ERR); 14681477Smarkm } 14781477Smarkm 14881477Smarkm PAM_LOG("Context initialised"); 14981477Smarkm 15081477Smarkm krbret = krb5_cc_register(pam_context, &krb5_mcc_ops, FALSE); 15181477Smarkm if (krbret != 0 && krbret != KRB5_CC_TYPE_EXISTS) { 15281477Smarkm PAM_VERBOSE_ERROR("Kerberos 5 error"); 15381477Smarkm retval = PAM_SERVICE_ERR; 15481477Smarkm goto cleanup3; 15581477Smarkm } 15681477Smarkm 15781477Smarkm PAM_LOG("Done krb5_cc_register()"); 15881477Smarkm 15981477Smarkm /* Get principal name */ 160115465Sdes if (openpam_get_option(pamh, PAM_OPT_AUTH_AS_SELF)) 161123454Sdes asprintf(&principal, "%s/%s", (const char *)sourceuser, user); 16281477Smarkm else 16381477Smarkm principal = strdup(user); 16481477Smarkm 16581477Smarkm PAM_LOG("Created principal: %s", principal); 16681477Smarkm 16781477Smarkm krbret = krb5_parse_name(pam_context, principal, &princ); 16881477Smarkm free(principal); 16981477Smarkm if (krbret != 0) { 170233406Sstas PAM_LOG_KRB5_ERR(pam_context, krbret, "Error krb5_parse_name()"); 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) { 182233406Sstas PAM_LOG_KRB5_ERR(pam_context, krbret, 183233406Sstas "Error krb5_unparse_name()"); 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"); 209233406Sstas PAM_LOG_KRB5_ERR(pam_context, krbret, 210233406Sstas "Error krb5_aname_to_localname()"); 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 222239062Sdfr if (!openpam_get_option(pamh, PAM_OPT_NO_USER_CHECK)) { 223239062Sdfr pwd = getpwnam(user); 224239062Sdfr if (pwd == NULL) { 225239062Sdfr retval = PAM_USER_UNKNOWN; 226239062Sdfr goto cleanup2; 227239062Sdfr } 22881477Smarkm } 22981477Smarkm 230207555Smm PAM_LOG("Done getpwnam()"); 23181477Smarkm } 23281477Smarkm 233233406Sstas /* Initialize credentials request options. */ 234233406Sstas krbret = krb5_get_init_creds_opt_alloc(pam_context, &opts); 235233406Sstas if (krbret != 0) { 236233406Sstas PAM_LOG_KRB5_ERR(pam_context, krbret, 237233406Sstas "Error krb5_get_init_creds_opt_alloc()"); 238233406Sstas PAM_VERBOSE_ERROR("Kerberos 5 error"); 239233406Sstas retval = PAM_SERVICE_ERR; 240233406Sstas goto cleanup2; 241233406Sstas } 242233406Sstas 243233406Sstas if (openpam_get_option(pamh, PAM_OPT_FORWARDABLE)) 244233406Sstas krb5_get_init_creds_opt_set_forwardable(opts, 1); 245233406Sstas 246233406Sstas PAM_LOG("Credential options initialised"); 247233406Sstas 24881477Smarkm /* Get a TGT */ 24981477Smarkm memset(&creds, 0, sizeof(krb5_creds)); 25081477Smarkm krbret = krb5_get_init_creds_password(pam_context, &creds, princ, 251233406Sstas pass, NULL, pamh, 0, NULL, opts); 252233406Sstas krb5_get_init_creds_opt_free(pam_context, opts); 25381477Smarkm if (krbret != 0) { 25481477Smarkm PAM_VERBOSE_ERROR("Kerberos 5 error"); 255233406Sstas PAM_LOG_KRB5_ERR(pam_context, krbret, 256233406Sstas "Error krb5_get_init_creds_password()"); 25781477Smarkm retval = PAM_AUTH_ERR; 25881477Smarkm goto cleanup2; 25981477Smarkm } 26081477Smarkm 26181477Smarkm PAM_LOG("Got TGT"); 26281477Smarkm 263106864Snectar /* Generate a temporary cache */ 264233406Sstas krbret = krb5_cc_new_unique(pam_context, krb5_cc_type_memory, NULL, &ccache); 26581477Smarkm if (krbret != 0) { 26681477Smarkm PAM_VERBOSE_ERROR("Kerberos 5 error"); 267233406Sstas PAM_LOG_KRB5_ERR(pam_context, krbret, 268233406Sstas "Error krb5_cc_new_unique()"); 26981477Smarkm retval = PAM_SERVICE_ERR; 27081477Smarkm goto cleanup; 27181477Smarkm } 27281477Smarkm krbret = krb5_cc_initialize(pam_context, ccache, princ); 27381477Smarkm if (krbret != 0) { 27481477Smarkm PAM_VERBOSE_ERROR("Kerberos 5 error"); 275233406Sstas PAM_LOG_KRB5_ERR(pam_context, krbret, 276233406Sstas "Error krb5_cc_initialize()"); 27781477Smarkm retval = PAM_SERVICE_ERR; 27881477Smarkm goto cleanup; 27981477Smarkm } 28081477Smarkm krbret = krb5_cc_store_cred(pam_context, ccache, &creds); 28181477Smarkm if (krbret != 0) { 28281477Smarkm PAM_VERBOSE_ERROR("Kerberos 5 error"); 283233406Sstas PAM_LOG_KRB5_ERR(pam_context, krbret, 284233406Sstas "Error krb5_cc_store_cred()"); 28581477Smarkm krb5_cc_destroy(pam_context, ccache); 28681477Smarkm retval = PAM_SERVICE_ERR; 28781477Smarkm goto cleanup; 28881477Smarkm } 28981477Smarkm 29081477Smarkm PAM_LOG("Credentials stashed"); 29181477Smarkm 29281477Smarkm /* Verify them */ 29393984Sdes if ((srvdup = strdup(service)) == NULL) { 29493984Sdes retval = PAM_BUF_ERR; 29593984Sdes goto cleanup; 29693984Sdes } 29793984Sdes krbret = verify_krb_v5_tgt(pam_context, ccache, srvdup, 298140667Srwatson openpam_get_option(pamh, PAM_OPT_DEBUG) ? 1 : 0); 29993984Sdes free(srvdup); 30093984Sdes if (krbret == -1) { 30181477Smarkm PAM_VERBOSE_ERROR("Kerberos 5 error"); 30281477Smarkm krb5_cc_destroy(pam_context, ccache); 30381477Smarkm retval = PAM_AUTH_ERR; 30481477Smarkm goto cleanup; 30581477Smarkm } 30681477Smarkm 30781477Smarkm PAM_LOG("Credentials stash verified"); 30881477Smarkm 309125650Sdes retval = pam_get_data(pamh, "ccache", &ccache_data); 31081477Smarkm if (retval == PAM_SUCCESS) { 31181477Smarkm krb5_cc_destroy(pam_context, ccache); 31281477Smarkm PAM_VERBOSE_ERROR("Kerberos 5 error"); 31381477Smarkm retval = PAM_AUTH_ERR; 31481477Smarkm goto cleanup; 31581477Smarkm } 31681477Smarkm 31781477Smarkm PAM_LOG("Credentials stash not pre-existing"); 31881477Smarkm 319106864Snectar asprintf(&ccache_name, "%s:%s", krb5_cc_get_type(pam_context, 320106864Snectar ccache), krb5_cc_get_name(pam_context, ccache)); 321106864Snectar if (ccache_name == NULL) { 322106864Snectar PAM_VERBOSE_ERROR("Kerberos 5 error"); 323106864Snectar retval = PAM_BUF_ERR; 324106864Snectar goto cleanup; 325106864Snectar } 326106864Snectar retval = pam_set_data(pamh, "ccache", ccache_name, cleanup_cache); 32781477Smarkm if (retval != 0) { 32881477Smarkm krb5_cc_destroy(pam_context, ccache); 32981477Smarkm PAM_VERBOSE_ERROR("Kerberos 5 error"); 33081477Smarkm retval = PAM_SERVICE_ERR; 33181477Smarkm goto cleanup; 33281477Smarkm } 33381477Smarkm 33481477Smarkm PAM_LOG("Credentials stash saved"); 33581477Smarkm 33681477Smarkmcleanup: 33781477Smarkm krb5_free_cred_contents(pam_context, &creds); 33881477Smarkm PAM_LOG("Done cleanup"); 33981477Smarkmcleanup2: 34081477Smarkm krb5_free_principal(pam_context, princ); 34181477Smarkm if (princ_name) 34281477Smarkm free(princ_name); 343239099Sdim PAM_LOG("Done cleanup2"); 34481477Smarkm 345239099Sdimcleanup3: 34681477Smarkm krb5_free_context(pam_context); 34781477Smarkm 34881477Smarkm PAM_LOG("Done cleanup3"); 34981477Smarkm 35081477Smarkm if (retval != PAM_SUCCESS) 35181477Smarkm PAM_VERBOSE_ERROR("Kerberos 5 refuses you"); 35281477Smarkm 35394564Sdes return (retval); 35481477Smarkm} 35581477Smarkm 35681477SmarkmPAM_EXTERN int 35794564Sdespam_sm_setcred(pam_handle_t *pamh, int flags, 358115465Sdes int argc __unused, const char *argv[] __unused) 35981477Smarkm{ 360147810Skensmith#ifdef _FREEFALL_CONFIG 361147810Skensmith return (PAM_SUCCESS); 362147810Skensmith#else 36381477Smarkm 36481477Smarkm krb5_error_code krbret; 36581477Smarkm krb5_context pam_context; 36681477Smarkm krb5_principal princ; 36781477Smarkm krb5_creds creds; 36881477Smarkm krb5_ccache ccache_temp, ccache_perm; 36981477Smarkm krb5_cc_cursor cursor; 37081477Smarkm struct passwd *pwd = NULL; 37181477Smarkm int retval; 372123454Sdes const char *cache_name, *q; 373125650Sdes const void *user; 374174837Sdes const void *cache_data; 375115465Sdes char *cache_name_buf = NULL, *p; 37681477Smarkm 37781477Smarkm uid_t euid; 37881477Smarkm gid_t egid; 37981477Smarkm 38081477Smarkm if (flags & PAM_DELETE_CRED) 38194564Sdes return (PAM_SUCCESS); 38281477Smarkm 38381477Smarkm if (flags & PAM_REFRESH_CRED) 38494564Sdes return (PAM_SUCCESS); 38581477Smarkm 38681477Smarkm if (flags & PAM_REINITIALIZE_CRED) 38794564Sdes return (PAM_SUCCESS); 38881477Smarkm 38981477Smarkm if (!(flags & PAM_ESTABLISH_CRED)) 39094564Sdes return (PAM_SERVICE_ERR); 39181477Smarkm 392140747Srwatson /* If a persistent cache isn't desired, stop now. */ 393207553Smm if (openpam_get_option(pamh, PAM_OPT_NO_CCACHE) || 394207553Smm openpam_get_option(pamh, PAM_OPT_NO_USER_CHECK)) 395140747Srwatson return (PAM_SUCCESS); 396140747Srwatson 39781477Smarkm PAM_LOG("Establishing credentials"); 39881477Smarkm 39981477Smarkm /* Get username */ 400123454Sdes retval = pam_get_item(pamh, PAM_USER, &user); 40181477Smarkm if (retval != PAM_SUCCESS) 40294564Sdes return (retval); 40381477Smarkm 404123454Sdes PAM_LOG("Got user: %s", (const char *)user); 40581477Smarkm 40681477Smarkm krbret = krb5_init_context(&pam_context); 40781477Smarkm if (krbret != 0) { 408106862Snectar PAM_LOG("Error krb5_init_context() failed"); 40994564Sdes return (PAM_SERVICE_ERR); 41081477Smarkm } 41181477Smarkm 41281477Smarkm PAM_LOG("Context initialised"); 41381477Smarkm 41481477Smarkm euid = geteuid(); /* Usually 0 */ 41581477Smarkm egid = getegid(); 41681477Smarkm 41781477Smarkm PAM_LOG("Got euid, egid: %d %d", euid, egid); 41881477Smarkm 419106864Snectar /* Retrieve the temporary cache */ 420123454Sdes retval = pam_get_data(pamh, "ccache", &cache_data); 421110056Snectar if (retval != PAM_SUCCESS) { 422110056Snectar retval = PAM_CRED_UNAVAIL; 42381477Smarkm goto cleanup3; 424110056Snectar } 425123454Sdes krbret = krb5_cc_resolve(pam_context, cache_data, &ccache_temp); 426106864Snectar if (krbret != 0) { 427233406Sstas PAM_LOG_KRB5_ERR(pam_context, krbret, 428233406Sstas "Error krb5_cc_resolve(\"%s\")", (const char *)cache_data); 429110056Snectar retval = PAM_SERVICE_ERR; 430106864Snectar goto cleanup3; 431106864Snectar } 43281477Smarkm 43381477Smarkm /* Get the uid. This should exist. */ 43481477Smarkm pwd = getpwnam(user); 43581477Smarkm if (pwd == NULL) { 43681477Smarkm retval = PAM_USER_UNKNOWN; 43781477Smarkm goto cleanup3; 43881477Smarkm } 43981477Smarkm 44081477Smarkm PAM_LOG("Done getpwnam()"); 44181477Smarkm 44281477Smarkm /* Avoid following a symlink as root */ 44381477Smarkm if (setegid(pwd->pw_gid)) { 44481477Smarkm retval = PAM_SERVICE_ERR; 44581477Smarkm goto cleanup3; 44681477Smarkm } 44781477Smarkm if (seteuid(pwd->pw_uid)) { 44881477Smarkm retval = PAM_SERVICE_ERR; 44981477Smarkm goto cleanup3; 45081477Smarkm } 45181477Smarkm 45281477Smarkm PAM_LOG("Done setegid() & seteuid()"); 45381477Smarkm 45481477Smarkm /* Get the cache name */ 455115465Sdes cache_name = openpam_get_option(pamh, PAM_OPT_CCACHE); 456115465Sdes if (cache_name == NULL) { 457115465Sdes asprintf(&cache_name_buf, "FILE:/tmp/krb5cc_%d", pwd->pw_uid); 458115465Sdes cache_name = cache_name_buf; 459115465Sdes } 46081477Smarkm 46181477Smarkm p = calloc(PATH_MAX + 16, sizeof(char)); 46281477Smarkm q = cache_name; 46381477Smarkm 46481477Smarkm if (p == NULL) { 46581477Smarkm PAM_LOG("Error malloc(): failure"); 46681477Smarkm retval = PAM_BUF_ERR; 46781477Smarkm goto cleanup3; 46881477Smarkm } 46981477Smarkm cache_name = p; 47081477Smarkm 47181477Smarkm /* convert %u and %p */ 47281477Smarkm while (*q) { 47381477Smarkm if (*q == '%') { 47481477Smarkm q++; 47581477Smarkm if (*q == 'u') { 47681477Smarkm sprintf(p, "%d", pwd->pw_uid); 47781477Smarkm p += strlen(p); 47881477Smarkm } 47981477Smarkm else if (*q == 'p') { 48081477Smarkm sprintf(p, "%d", getpid()); 48181477Smarkm p += strlen(p); 48281477Smarkm } 48381477Smarkm else { 48481477Smarkm /* Not a special token */ 48581477Smarkm *p++ = '%'; 48681477Smarkm q--; 48781477Smarkm } 48881477Smarkm q++; 48981477Smarkm } 49081477Smarkm else { 49181477Smarkm *p++ = *q++; 49281477Smarkm } 49381477Smarkm } 49481477Smarkm 49581477Smarkm PAM_LOG("Got cache_name: %s", cache_name); 49681477Smarkm 49781477Smarkm /* Initialize the new ccache */ 49881477Smarkm krbret = krb5_cc_get_principal(pam_context, ccache_temp, &princ); 49981477Smarkm if (krbret != 0) { 500233406Sstas PAM_LOG_KRB5_ERR(pam_context, krbret, 501233406Sstas "Error krb5_cc_get_principal()"); 50281477Smarkm retval = PAM_SERVICE_ERR; 50381477Smarkm goto cleanup3; 50481477Smarkm } 50581477Smarkm krbret = krb5_cc_resolve(pam_context, cache_name, &ccache_perm); 50681477Smarkm if (krbret != 0) { 507233406Sstas PAM_LOG_KRB5_ERR(pam_context, krbret, "Error krb5_cc_resolve()"); 50881477Smarkm retval = PAM_SERVICE_ERR; 50981477Smarkm goto cleanup2; 51081477Smarkm } 51181477Smarkm krbret = krb5_cc_initialize(pam_context, ccache_perm, princ); 51281477Smarkm if (krbret != 0) { 513233406Sstas PAM_LOG_KRB5_ERR(pam_context, krbret, 514233406Sstas "Error krb5_cc_initialize()"); 51581477Smarkm retval = PAM_SERVICE_ERR; 51681477Smarkm goto cleanup2; 51781477Smarkm } 51881477Smarkm 51981477Smarkm PAM_LOG("Cache initialised"); 52081477Smarkm 52181477Smarkm /* Prepare for iteration over creds */ 52281477Smarkm krbret = krb5_cc_start_seq_get(pam_context, ccache_temp, &cursor); 52381477Smarkm if (krbret != 0) { 524233406Sstas PAM_LOG_KRB5_ERR(pam_context, krbret, 525233406Sstas "Error krb5_cc_start_seq_get()"); 52681477Smarkm krb5_cc_destroy(pam_context, ccache_perm); 52781477Smarkm retval = PAM_SERVICE_ERR; 52881477Smarkm goto cleanup2; 52981477Smarkm } 53081477Smarkm 53181477Smarkm PAM_LOG("Prepared for iteration"); 53281477Smarkm 53381477Smarkm /* Copy the creds (should be two of them) */ 53481477Smarkm while ((krbret = krb5_cc_next_cred(pam_context, ccache_temp, 53581477Smarkm &cursor, &creds) == 0)) { 53681477Smarkm krbret = krb5_cc_store_cred(pam_context, ccache_perm, &creds); 53781477Smarkm if (krbret != 0) { 538233406Sstas PAM_LOG_KRB5_ERR(pam_context, krbret, 539233406Sstas "Error krb5_cc_store_cred()"); 54081477Smarkm krb5_cc_destroy(pam_context, ccache_perm); 54181477Smarkm krb5_free_cred_contents(pam_context, &creds); 54281477Smarkm retval = PAM_SERVICE_ERR; 54381477Smarkm goto cleanup2; 54481477Smarkm } 54581477Smarkm krb5_free_cred_contents(pam_context, &creds); 54681477Smarkm PAM_LOG("Iteration"); 54781477Smarkm } 54881477Smarkm krb5_cc_end_seq_get(pam_context, ccache_temp, &cursor); 54981477Smarkm 55081477Smarkm PAM_LOG("Done iterating"); 55181477Smarkm 55281477Smarkm if (strstr(cache_name, "FILE:") == cache_name) { 55381477Smarkm if (chown(&cache_name[5], pwd->pw_uid, pwd->pw_gid) == -1) { 55481477Smarkm PAM_LOG("Error chown(): %s", strerror(errno)); 55581477Smarkm krb5_cc_destroy(pam_context, ccache_perm); 55681477Smarkm retval = PAM_SERVICE_ERR; 55781477Smarkm goto cleanup2; 55881477Smarkm } 55981477Smarkm PAM_LOG("Done chown()"); 56081477Smarkm 56181477Smarkm if (chmod(&cache_name[5], (S_IRUSR | S_IWUSR)) == -1) { 56281477Smarkm PAM_LOG("Error chmod(): %s", strerror(errno)); 56381477Smarkm krb5_cc_destroy(pam_context, ccache_perm); 56481477Smarkm retval = PAM_SERVICE_ERR; 56581477Smarkm goto cleanup2; 56681477Smarkm } 56781477Smarkm PAM_LOG("Done chmod()"); 56881477Smarkm } 56981477Smarkm 57081477Smarkm krb5_cc_close(pam_context, ccache_perm); 57181477Smarkm 57281477Smarkm PAM_LOG("Cache closed"); 57381477Smarkm 574115465Sdes retval = pam_setenv(pamh, "KRB5CCNAME", cache_name, 1); 575115465Sdes if (retval != PAM_SUCCESS) { 576115465Sdes PAM_LOG("Error pam_setenv(): %s", pam_strerror(pamh, retval)); 57781477Smarkm krb5_cc_destroy(pam_context, ccache_perm); 57881477Smarkm retval = PAM_SERVICE_ERR; 57981477Smarkm goto cleanup2; 58081477Smarkm } 58181477Smarkm 58281477Smarkm PAM_LOG("Environment done: KRB5CCNAME=%s", cache_name); 58381477Smarkm 58481477Smarkmcleanup2: 58581477Smarkm krb5_free_principal(pam_context, princ); 58681477Smarkm PAM_LOG("Done cleanup2"); 58781477Smarkmcleanup3: 58881477Smarkm krb5_free_context(pam_context); 58981477Smarkm PAM_LOG("Done cleanup3"); 59081477Smarkm 59181477Smarkm seteuid(euid); 59281477Smarkm setegid(egid); 59381477Smarkm 59481477Smarkm PAM_LOG("Done seteuid() & setegid()"); 59594564Sdes 596115465Sdes if (cache_name_buf != NULL) 597115465Sdes free(cache_name_buf); 598115465Sdes 59994564Sdes return (retval); 600147810Skensmith#endif 60181477Smarkm} 60281477Smarkm 60394564Sdes/* 60481477Smarkm * account management 60581477Smarkm */ 60681477SmarkmPAM_EXTERN int 60794564Sdespam_sm_acct_mgmt(pam_handle_t *pamh, int flags __unused, 608115465Sdes int argc __unused, const char *argv[] __unused) 60981477Smarkm{ 61081477Smarkm krb5_error_code krbret; 61181477Smarkm krb5_context pam_context; 61281477Smarkm krb5_ccache ccache; 61381477Smarkm krb5_principal princ; 61481477Smarkm int retval; 615125650Sdes const void *user; 616174837Sdes const void *ccache_name; 61781477Smarkm 618123454Sdes retval = pam_get_item(pamh, PAM_USER, &user); 61981477Smarkm if (retval != PAM_SUCCESS) 62094564Sdes return (retval); 62181477Smarkm 622123454Sdes PAM_LOG("Got user: %s", (const char *)user); 62381477Smarkm 624123454Sdes retval = pam_get_data(pamh, "ccache", &ccache_name); 625110275Sdes if (retval != PAM_SUCCESS) 626110275Sdes return (PAM_SUCCESS); 627110275Sdes 628110275Sdes PAM_LOG("Got credentials"); 629110275Sdes 63081477Smarkm krbret = krb5_init_context(&pam_context); 63181477Smarkm if (krbret != 0) { 632106862Snectar PAM_LOG("Error krb5_init_context() failed"); 63394564Sdes return (PAM_PERM_DENIED); 63481477Smarkm } 63581477Smarkm 63681477Smarkm PAM_LOG("Context initialised"); 63781477Smarkm 638123454Sdes krbret = krb5_cc_resolve(pam_context, (const char *)ccache_name, &ccache); 639106864Snectar if (krbret != 0) { 640233406Sstas PAM_LOG_KRB5_ERR(pam_context, krbret, 641233406Sstas "Error krb5_cc_resolve(\"%s\")", (const char *)ccache_name); 642106864Snectar krb5_free_context(pam_context); 643106864Snectar return (PAM_PERM_DENIED); 644106864Snectar } 645106864Snectar 646123454Sdes PAM_LOG("Got ccache %s", (const char *)ccache_name); 647106864Snectar 648106864Snectar 64981477Smarkm krbret = krb5_cc_get_principal(pam_context, ccache, &princ); 65081477Smarkm if (krbret != 0) { 651233406Sstas PAM_LOG_KRB5_ERR(pam_context, krbret, 652233406Sstas "Error krb5_cc_get_principal()"); 653241844Seadler retval = PAM_PERM_DENIED; 65481477Smarkm goto cleanup; 65581477Smarkm } 65681477Smarkm 65781477Smarkm PAM_LOG("Got principal"); 65881477Smarkm 659123454Sdes if (krb5_kuserok(pam_context, princ, (const char *)user)) 66081477Smarkm retval = PAM_SUCCESS; 66181477Smarkm else 66281477Smarkm retval = PAM_PERM_DENIED; 66381477Smarkm krb5_free_principal(pam_context, princ); 66481477Smarkm 66581477Smarkm PAM_LOG("Done kuserok()"); 66681477Smarkm 66781477Smarkmcleanup: 66881477Smarkm krb5_free_context(pam_context); 66981477Smarkm PAM_LOG("Done cleanup"); 67081477Smarkm 67194564Sdes return (retval); 67281477Smarkm 67381477Smarkm} 67481477Smarkm 67594564Sdes/* 67681477Smarkm * password management 67781477Smarkm */ 67881477SmarkmPAM_EXTERN int 67994564Sdespam_sm_chauthtok(pam_handle_t *pamh, int flags, 680115465Sdes int argc __unused, const char *argv[] __unused) 68181477Smarkm{ 68281477Smarkm krb5_error_code krbret; 68381477Smarkm krb5_context pam_context; 68481477Smarkm krb5_creds creds; 68581477Smarkm krb5_principal princ; 686233406Sstas krb5_get_init_creds_opt *opts; 68781477Smarkm krb5_data result_code_string, result_string; 68881477Smarkm int result_code, retval; 689123454Sdes const char *pass; 690123454Sdes const void *user; 69193984Sdes char *princ_name, *passdup; 69281477Smarkm 69381477Smarkm if (!(flags & PAM_UPDATE_AUTHTOK)) 69494564Sdes return (PAM_AUTHTOK_ERR); 69581477Smarkm 696123454Sdes retval = pam_get_item(pamh, PAM_USER, &user); 69781477Smarkm if (retval != PAM_SUCCESS) 69894564Sdes return (retval); 69981477Smarkm 700123454Sdes PAM_LOG("Got user: %s", (const char *)user); 70181477Smarkm 70281477Smarkm krbret = krb5_init_context(&pam_context); 70381477Smarkm if (krbret != 0) { 704106862Snectar PAM_LOG("Error krb5_init_context() failed"); 70594564Sdes return (PAM_SERVICE_ERR); 70681477Smarkm } 70781477Smarkm 70881477Smarkm PAM_LOG("Context initialised"); 70981477Smarkm 71081477Smarkm /* Get principal name */ 711123454Sdes krbret = krb5_parse_name(pam_context, (const char *)user, &princ); 71281477Smarkm if (krbret != 0) { 713233406Sstas PAM_LOG_KRB5_ERR(pam_context, krbret, 714233406Sstas "Error krb5_parse_name()"); 71581477Smarkm retval = PAM_USER_UNKNOWN; 71681477Smarkm goto cleanup3; 71781477Smarkm } 71881477Smarkm 71981477Smarkm /* Now convert the principal name into something human readable */ 72081477Smarkm princ_name = NULL; 72181477Smarkm krbret = krb5_unparse_name(pam_context, princ, &princ_name); 72281477Smarkm if (krbret != 0) { 723233406Sstas PAM_LOG_KRB5_ERR(pam_context, krbret, 724233406Sstas "Error krb5_unparse_name()"); 72581477Smarkm retval = PAM_SERVICE_ERR; 72681477Smarkm goto cleanup2; 72781477Smarkm } 72881477Smarkm 72981477Smarkm PAM_LOG("Got principal: %s", princ_name); 73081477Smarkm 73181477Smarkm /* Get password */ 73293984Sdes retval = pam_get_authtok(pamh, PAM_OLDAUTHTOK, &pass, PASSWORD_PROMPT); 73381477Smarkm if (retval != PAM_SUCCESS) 73481477Smarkm goto cleanup2; 73581477Smarkm 73681477Smarkm PAM_LOG("Got password"); 73781477Smarkm 738233406Sstas /* Initialize credentials request options. */ 739233406Sstas krbret = krb5_get_init_creds_opt_alloc(pam_context, &opts); 740233406Sstas if (krbret != 0) { 741233406Sstas PAM_LOG_KRB5_ERR(pam_context, krbret, 742233406Sstas "Error krb5_get_init_creds_opt_alloc()"); 743233406Sstas PAM_VERBOSE_ERROR("Kerberos 5 error"); 744233406Sstas retval = PAM_SERVICE_ERR; 745233406Sstas goto cleanup2; 746233406Sstas } 747233406Sstas 748233406Sstas PAM_LOG("Credentials options initialised"); 749233406Sstas 75081477Smarkm memset(&creds, 0, sizeof(krb5_creds)); 75181477Smarkm krbret = krb5_get_init_creds_password(pam_context, &creds, princ, 752233406Sstas pass, NULL, pamh, 0, "kadmin/changepw", opts); 753233406Sstas krb5_get_init_creds_opt_free(pam_context, opts); 75481477Smarkm if (krbret != 0) { 755233406Sstas PAM_LOG_KRB5_ERR(pam_context, krbret, 756233406Sstas "Error krb5_get_init_creds_password()"); 75781477Smarkm retval = PAM_AUTH_ERR; 75881477Smarkm goto cleanup2; 75981477Smarkm } 76081477Smarkm 76181477Smarkm PAM_LOG("Credentials established"); 76281477Smarkm 76381477Smarkm /* Now get the new password */ 76493984Sdes for (;;) { 76593984Sdes retval = pam_get_authtok(pamh, 76693984Sdes PAM_AUTHTOK, &pass, NEW_PASSWORD_PROMPT); 76793984Sdes if (retval != PAM_TRY_AGAIN) 76893984Sdes break; 76993984Sdes pam_error(pamh, "Mismatch; try again, EOF to quit."); 77093984Sdes } 77181477Smarkm if (retval != PAM_SUCCESS) 77281477Smarkm goto cleanup; 77381477Smarkm 77493984Sdes PAM_LOG("Got new password"); 77581477Smarkm 77693984Sdes /* Change it */ 77793984Sdes if ((passdup = strdup(pass)) == NULL) { 77893984Sdes retval = PAM_BUF_ERR; 77981477Smarkm goto cleanup; 78081477Smarkm } 781233406Sstas krbret = krb5_set_password(pam_context, &creds, passdup, NULL, 78281477Smarkm &result_code, &result_code_string, &result_string); 78393984Sdes free(passdup); 78481477Smarkm if (krbret != 0) { 785233406Sstas PAM_LOG_KRB5_ERR(pam_context, krbret, 786233406Sstas "Error krb5_change_password()"); 78781477Smarkm retval = PAM_AUTHTOK_ERR; 78881477Smarkm goto cleanup; 78981477Smarkm } 79081477Smarkm if (result_code) { 79181477Smarkm PAM_LOG("Error krb5_change_password(): (result_code)"); 79281477Smarkm retval = PAM_AUTHTOK_ERR; 79381477Smarkm goto cleanup; 79481477Smarkm } 79581477Smarkm 79681477Smarkm PAM_LOG("Password changed"); 79781477Smarkm 79881477Smarkm if (result_string.data) 79981477Smarkm free(result_string.data); 80081477Smarkm if (result_code_string.data) 80181477Smarkm free(result_code_string.data); 80281477Smarkm 80381477Smarkmcleanup: 80481477Smarkm krb5_free_cred_contents(pam_context, &creds); 80581477Smarkm PAM_LOG("Done cleanup"); 80681477Smarkmcleanup2: 80781477Smarkm krb5_free_principal(pam_context, princ); 80881477Smarkm if (princ_name) 80981477Smarkm free(princ_name); 810239099Sdim PAM_LOG("Done cleanup2"); 81181477Smarkm 812239099Sdimcleanup3: 81381477Smarkm krb5_free_context(pam_context); 81481477Smarkm 81581477Smarkm PAM_LOG("Done cleanup3"); 81681477Smarkm 81794564Sdes return (retval); 81881477Smarkm} 81981477Smarkm 82081477SmarkmPAM_MODULE_ENTRY("pam_krb5"); 82181477Smarkm 82281477Smarkm/* 82381477Smarkm * This routine with some modification is from the MIT V5B6 appl/bsd/login.c 82481477Smarkm * Modified by Sam Hartman <hartmans@mit.edu> to support PAM services 82581477Smarkm * for Debian. 82681477Smarkm * 82781477Smarkm * Verify the Kerberos ticket-granting ticket just retrieved for the 82881477Smarkm * user. If the Kerberos server doesn't respond, assume the user is 82981477Smarkm * trying to fake us out (since we DID just get a TGT from what is 83081477Smarkm * supposedly our KDC). If the host/<host> service is unknown (i.e., 83181477Smarkm * the local keytab doesn't have it), and we cannot find another 83281477Smarkm * service we do have, let her in. 83381477Smarkm * 83481477Smarkm * Returns 1 for confirmation, -1 for failure, 0 for uncertainty. 83581477Smarkm */ 836111985Smarkm/* ARGSUSED */ 83781477Smarkmstatic int 83881477Smarkmverify_krb_v5_tgt(krb5_context context, krb5_ccache ccache, 83981477Smarkm char *pam_service, int debug) 84081477Smarkm{ 84181477Smarkm krb5_error_code retval; 84281477Smarkm krb5_principal princ; 84381477Smarkm krb5_keyblock *keyblock; 84481477Smarkm krb5_data packet; 84581477Smarkm krb5_auth_context auth_context; 84689760Smarkm char phost[BUFSIZ]; 84789760Smarkm const char *services[3], **service; 84881477Smarkm 84981477Smarkm packet.data = 0; 85081477Smarkm 85181477Smarkm /* If possible we want to try and verify the ticket we have 85281477Smarkm * received against a keytab. We will try multiple service 85381477Smarkm * principals, including at least the host principal and the PAM 85481477Smarkm * service principal. The host principal is preferred because access 85581477Smarkm * to that key is generally sufficient to compromise root, while the 85681477Smarkm * service key for this PAM service may be less carefully guarded. 85781477Smarkm * It is important to check the keytab first before the KDC so we do 85881477Smarkm * not get spoofed by a fake KDC. 85981477Smarkm */ 86081477Smarkm services[0] = "host"; 86181477Smarkm services[1] = pam_service; 86281477Smarkm services[2] = NULL; 86381477Smarkm keyblock = 0; 86481477Smarkm retval = -1; 86581477Smarkm for (service = &services[0]; *service != NULL; service++) { 86681477Smarkm retval = krb5_sname_to_principal(context, NULL, *service, 86781477Smarkm KRB5_NT_SRV_HST, &princ); 86881477Smarkm if (retval != 0) { 869233406Sstas if (debug) { 870233406Sstas const char *msg = krb5_get_error_message( 871233406Sstas context, retval); 872106862Snectar syslog(LOG_DEBUG, 873106862Snectar "pam_krb5: verify_krb_v5_tgt(): %s: %s", 874233406Sstas "krb5_sname_to_principal()", msg); 875233406Sstas krb5_free_error_message(context, msg); 876233406Sstas } 87781477Smarkm return -1; 87881477Smarkm } 87981477Smarkm 88081477Smarkm /* Extract the name directly. */ 88181477Smarkm strncpy(phost, compat_princ_component(context, princ, 1), 88281477Smarkm BUFSIZ); 88381477Smarkm phost[BUFSIZ - 1] = '\0'; 88481477Smarkm 88581477Smarkm /* 88694564Sdes * Do we have service/<host> keys? 88794564Sdes * (use default/configured keytab, kvno IGNORE_VNO to get the 88894564Sdes * first match, and ignore enctype.) 88994564Sdes */ 89081477Smarkm retval = krb5_kt_read_service_key(context, NULL, princ, 0, 0, 89181477Smarkm &keyblock); 89281477Smarkm if (retval != 0) 89381477Smarkm continue; 89481477Smarkm break; 89581477Smarkm } 89681477Smarkm if (retval != 0) { /* failed to find key */ 89781477Smarkm /* Keytab or service key does not exist */ 898233406Sstas if (debug) { 899233406Sstas const char *msg = krb5_get_error_message(context, 900233406Sstas retval); 901106862Snectar syslog(LOG_DEBUG, 902106862Snectar "pam_krb5: verify_krb_v5_tgt(): %s: %s", 903233406Sstas "krb5_kt_read_service_key()", msg); 904233406Sstas krb5_free_error_message(context, msg); 905233406Sstas } 90681477Smarkm retval = 0; 90781477Smarkm goto cleanup; 90881477Smarkm } 90981477Smarkm if (keyblock) 91081477Smarkm krb5_free_keyblock(context, keyblock); 91181477Smarkm 91281477Smarkm /* Talk to the kdc and construct the ticket. */ 91381477Smarkm auth_context = NULL; 91481477Smarkm retval = krb5_mk_req(context, &auth_context, 0, *service, phost, 91581477Smarkm NULL, ccache, &packet); 91681477Smarkm if (auth_context) { 91781477Smarkm krb5_auth_con_free(context, auth_context); 91881477Smarkm auth_context = NULL; /* setup for rd_req */ 91981477Smarkm } 92081477Smarkm if (retval) { 921233406Sstas if (debug) { 922233406Sstas const char *msg = krb5_get_error_message(context, 923233406Sstas retval); 924106862Snectar syslog(LOG_DEBUG, 925106862Snectar "pam_krb5: verify_krb_v5_tgt(): %s: %s", 926233406Sstas "krb5_mk_req()", msg); 927233406Sstas krb5_free_error_message(context, msg); 928233406Sstas } 92981477Smarkm retval = -1; 93081477Smarkm goto cleanup; 93181477Smarkm } 93281477Smarkm 93381477Smarkm /* Try to use the ticket. */ 93481477Smarkm retval = krb5_rd_req(context, &auth_context, &packet, princ, NULL, 93581477Smarkm NULL, NULL); 93681477Smarkm if (retval) { 937233406Sstas if (debug) { 938233406Sstas const char *msg = krb5_get_error_message(context, 939233406Sstas retval); 940106862Snectar syslog(LOG_DEBUG, 941106862Snectar "pam_krb5: verify_krb_v5_tgt(): %s: %s", 942233406Sstas "krb5_rd_req()", msg); 943233406Sstas krb5_free_error_message(context, msg); 944233406Sstas } 94581477Smarkm retval = -1; 94681477Smarkm } 94781477Smarkm else 94881477Smarkm retval = 1; 94981477Smarkm 95081477Smarkmcleanup: 95181477Smarkm if (packet.data) 95281477Smarkm compat_free_data_contents(context, &packet); 95381477Smarkm krb5_free_principal(context, princ); 95481477Smarkm return retval; 95581477Smarkm} 95681477Smarkm 95781477Smarkm/* Free the memory for cache_name. Called by pam_end() */ 958111985Smarkm/* ARGSUSED */ 95981477Smarkmstatic void 96089760Smarkmcleanup_cache(pam_handle_t *pamh __unused, void *data, int pam_end_status __unused) 96181477Smarkm{ 96281477Smarkm krb5_context pam_context; 96381477Smarkm krb5_ccache ccache; 964106864Snectar krb5_error_code krbret; 96581477Smarkm 96681477Smarkm if (krb5_init_context(&pam_context)) 96781477Smarkm return; 96881477Smarkm 969106864Snectar krbret = krb5_cc_resolve(pam_context, data, &ccache); 970106864Snectar if (krbret == 0) 971106864Snectar krb5_cc_destroy(pam_context, ccache); 97281477Smarkm krb5_free_context(pam_context); 973106864Snectar free(data); 97481477Smarkm} 97581477Smarkm 97681477Smarkm#ifdef COMPAT_HEIMDAL 97781477Smarkm#ifdef COMPAT_MIT 97881477Smarkm#error This cannot be MIT and Heimdal compatible! 97981477Smarkm#endif 98081477Smarkm#endif 98181477Smarkm 98281477Smarkm#ifndef COMPAT_HEIMDAL 98381477Smarkm#ifndef COMPAT_MIT 98481477Smarkm#error One of COMPAT_MIT and COMPAT_HEIMDAL must be specified! 98581477Smarkm#endif 98681477Smarkm#endif 98781477Smarkm 98881477Smarkm#ifdef COMPAT_HEIMDAL 989111985Smarkm/* ARGSUSED */ 99081477Smarkmstatic const char * 99189760Smarkmcompat_princ_component(krb5_context context __unused, krb5_principal princ, int n) 99281477Smarkm{ 99381477Smarkm return princ->name.name_string.val[n]; 99481477Smarkm} 99581477Smarkm 996111985Smarkm/* ARGSUSED */ 99781477Smarkmstatic void 99889760Smarkmcompat_free_data_contents(krb5_context context __unused, krb5_data * data) 99981477Smarkm{ 100081477Smarkm krb5_xfree(data->data); 100181477Smarkm} 100281477Smarkm#endif 100381477Smarkm 100481477Smarkm#ifdef COMPAT_MIT 100581477Smarkmstatic const char * 100681477Smarkmcompat_princ_component(krb5_context context, krb5_principal princ, int n) 100781477Smarkm{ 100881477Smarkm return krb5_princ_component(context, princ, n)->data; 100981477Smarkm} 101081477Smarkm 101181477Smarkmstatic void 101281477Smarkmcompat_free_data_contents(krb5_context context, krb5_data * data) 101381477Smarkm{ 101481477Smarkm krb5_free_data_contents(context, data); 101581477Smarkm} 101681477Smarkm#endif 1017