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path: root/lib/puppet/parser/ast/node.rb

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/* -*- mode: c; c-basic-offset: 4; indent-tabs-mode: nil -*- */
/*
 * Copyright (C) 1989,1990,1991,1992,1993,1994,1995,2000,2001,
 * 2003,2006,2007,2008,2009 by the Massachusetts Institute of Technology,
 * Cambridge, MA, USA.  All Rights Reserved.
 *
 * This software is being provided to you, the LICENSEE, by the
 * Massachusetts Institute of Technology (M.I.T.) under the following
 * license.  By obtaining, using and/or copying this software, you agree
 * that you have read, understood, and will comply with these terms and
 * conditions:
 *
 * Export of this software from the United States of America may
 * require a specific license from the United States Government.
 * It is the responsibility of any person or organization contemplating
 * export to obtain such a license before exporting.
 *
 * WITHIN THAT CONSTRAINT, permission to use, copy, modify and distribute
 * this software and its documentation for any purpose and without fee or
 * royalty is hereby granted, provided that you agree to comply with the
 * following copyright notice and statements, including the disclaimer, and
 * that the same appear on ALL copies of the software and documentation,
 * including modifications that you make for internal use or for
 * distribution:
 *
 * THIS SOFTWARE IS PROVIDED "AS IS", AND M.I.T. MAKES NO REPRESENTATIONS
 * OR WARRANTIES, EXPRESS OR IMPLIED.  By way of example, but not
 * limitation, M.I.T. MAKES NO REPRESENTATIONS OR WARRANTIES OF
 * MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE OR THAT THE USE OF
 * THE LICENSED SOFTWARE OR DOCUMENTATION WILL NOT INFRINGE ANY THIRD PARTY
 * PATENTS, COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS.
 *
 * The name of the Massachusetts Institute of Technology or M.I.T. may NOT
 * be used in advertising or publicity pertaining to distribution of the
 * software.  Title to copyright in this software and any associated
 * documentation shall at all times remain with M.I.T., and USER agrees to
 * preserve same.
 *
 * Furthermore if you modify this software you must label
 * your software as modified software and not distribute it in such a
 * fashion that it might be confused with the original M.I.T. software.
 */
/*
 * Copyright (C) 1998 by the FundsXpress, INC.
 *
 * All rights reserved.
 *
 * Export of this software from the United States of America may require
 * a specific license from the United States Government.  It is the
 * responsibility of any person or organization contemplating export to
 * obtain such a license before exporting.
 *
 * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
 * distribute this software and its documentation for any purpose and
 * without fee is hereby granted, provided that the above copyright
 * notice appear in all copies and that both that copyright notice and
 * this permission notice appear in supporting documentation, and that
 * the name of FundsXpress. not be used in advertising or publicity pertaining
 * to distribution of the software without specific, written prior
 * permission.  FundsXpress makes no representations about the suitability of
 * this software for any purpose.  It is provided "as is" without express
 * or implied warranty.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 */

/*
 * This prototype for k5-int.h (Krb5 internals include file)
 * includes the user-visible definitions from krb5.h and then
 * includes other definitions that are not user-visible but are
 * required for compiling Kerberos internal routines.
 *
 * John Gilmore, Cygnus Support, Sat Jan 21 22:45:52 PST 1995
 */

#ifndef _KRB5_INT_H
#define _KRB5_INT_H

#ifdef KRB5_GENERAL__
#error krb5.h included before k5-int.h
#endif /* KRB5_GENERAL__ */

#include "osconf.h"

#if defined(__MACH__) && defined(__APPLE__)
#       include <TargetConditionals.h>
#    if TARGET_RT_MAC_CFM
#       error "Use KfM 4.0 SDK headers for CFM compilation."
#    endif
#endif

/*
 * Begin "k5-config.h"
 */
#ifndef KRB5_CONFIG__
#define KRB5_CONFIG__

/*
 * Machine-type definitions: PC Clone 386 running Microloss Windows
 */

#if defined(_MSDOS) || defined(_WIN32)
#include "win-mac.h"

/* Kerberos Windows initialization file */
#define KERBEROS_INI    "kerberos.ini"
#define INI_FILES       "Files"
#define INI_KRB_CCACHE  "krb5cc"        /* Location of the ccache */
#define INI_KRB5_CONF   "krb5.ini"      /* Location of krb5.conf file */
#define ANSI_STDIO
#endif

#include "autoconf.h"

#ifndef KRB5_SYSTYPES__
#define KRB5_SYSTYPES__

#ifdef HAVE_SYS_TYPES_H         /* From autoconf.h */
#include <sys/types.h>
#else /* HAVE_SYS_TYPES_H */
typedef unsigned long   u_long;
typedef unsigned int    u_int;
typedef unsigned short  u_short;
typedef unsigned char   u_char;
#endif /* HAVE_SYS_TYPES_H */
#endif /* KRB5_SYSTYPES__ */


#include "k5-platform.h"
/* not used in krb5.h (yet) */
typedef UINT64_TYPE krb5_ui_8;
typedef INT64_TYPE krb5_int64;


#define DEFAULT_PWD_STRING1 "Enter password"
#define DEFAULT_PWD_STRING2 "Re-enter password for verification"

#define KRB5_KDB_MAX_LIFE       (60*60*24) /* one day */
#define KRB5_KDB_MAX_RLIFE      (60*60*24*7) /* one week */
#define KRB5_KDB_EXPIRATION     2145830400 /* Thu Jan  1 00:00:00 2038 UTC */

/*
 * Windows requires a different api interface to each function. Here
 * just define it as NULL.
 */
#ifndef KRB5_CALLCONV
#define KRB5_CALLCONV
#define KRB5_CALLCONV_C
#endif
#ifndef O_BINARY
#define O_BINARY 0
#endif

/* #define KRB5_OLD_CRYPTO is done in krb5.h */

#endif /* KRB5_CONFIG__ */

/*
 * End "k5-config.h"
 */

/*
 * After loading the configuration definitions, load the Kerberos definitions.
 */
#include <errno.h>
#include "krb5.h"
#include <krb5/plugin.h>
#include "profile.h"

#include "port-sockets.h"
#include "socket-utils.h"

/* Get mutex support; currently used only for the replay cache.  */
#include "k5-thread.h"

/* Get error info support.  */
#include "k5-err.h"

/* Get string buffer support. */
#include "k5-buf.h"

/* Define tracing macros. */
#include "k5-trace.h"

/* cofiguration variables */
#define KRB5_CONF_ACL_FILE                       "acl_file"
#define KRB5_CONF_ADMIN_SERVER                   "admin_server"
#define KRB5_CONF_ALLOW_WEAK_CRYPTO              "allow_weak_crypto"
#define KRB5_CONF_AP_REQ_CHECKSUM_TYPE           "ap_req_checksum_type"
#define KRB5_CONF_AUTH_TO_LOCAL                  "auth_to_local"
#define KRB5_CONF_AUTH_TO_LOCAL_NAMES            "auth_to_local_names"
#define KRB5_CONF_CANONICALIZE                   "canonicalize"
#define KRB5_CONF_CCACHE_TYPE                    "ccache_type"
#define KRB5_CONF_CLOCKSKEW                      "clockskew"
#define KRB5_CONF_DATABASE_NAME                  "database_name"
#define KRB5_CONF_DB_MODULE_DIR                  "db_module_dir"
#define KRB5_CONF_DEFAULT                        "default"
#define KRB5_CONF_DEFAULT_REALM                  "default_realm"
#define KRB5_CONF_DEFAULT_CCACHE_NAME            "default_ccache_name"
#define KRB5_CONF_DEFAULT_CLIENT_KEYTAB_NAME     "default_client_keytab_name"
#define KRB5_CONF_DEFAULT_DOMAIN                 "default_domain"
#define KRB5_CONF_DEFAULT_TKT_ENCTYPES           "default_tkt_enctypes"
#define KRB5_CONF_DEFAULT_TGS_ENCTYPES           "default_tgs_enctypes"
#define KRB5_CONF_DEFAULT_KEYTAB_NAME            "default_keytab_name"
#define KRB5_CONF_DEFAULT_PRINCIPAL_EXPIRATION   "default_principal_expiration"
#define KRB5_CONF_DEFAULT_PRINCIPAL_FLAGS        "default_principal_flags"
#define KRB5_CONF_DICT_FILE                   "dict_file"
#define KRB5_CONF_DISABLE                     "disable"
#define KRB5_CONF_DISABLE_LAST_SUCCESS        "disable_last_success"
#define KRB5_CONF_DISABLE_LOCKOUT             "disable_lockout"
#define KRB5_CONF_DNS_LOOKUP_KDC              "dns_lookup_kdc"
#define KRB5_CONF_DNS_LOOKUP_REALM            "dns_lookup_realm"
#define KRB5_CONF_DNS_FALLBACK                "dns_fallback"
#define KRB5_CONF_DOMAIN_REALM                "domain_realm"
#define KRB5_CONF_ENABLE_ONLY                 "enable_only"
#define KRB5_CONF_EXTRA_ADDRESSES             "extra_addresses"
#define KRB5_CONF_FORWARDABLE                 "forwardable"
#define KRB5_CONF_HOST_BASED_SERVICES         "host_based_services"
#define KRB5_CONF_IGNORE_ACCEPTOR_HOSTNAME    "ignore_acceptor_hostname"
#define KRB5_CONF_IPROP_ENABLE                "iprop_enable"
#define KRB5_CONF_IPROP_MASTER_ULOGSIZE       "iprop_master_ulogsize"
#define KRB5_CONF_IPROP_PORT                  "iprop_port"
#define KRB5_CONF_IPROP_SLAVE_POLL            "iprop_slave_poll"
#define KRB5_CONF_IPROP_LOGFILE               "iprop_logfile"
#define KRB5_CONF_IPROP_RESYNC_TIMEOUT        "iprop_resync_timeout"
#define KRB5_CONF_K5LOGIN_AUTHORITATIVE       "k5login_authoritative"
#define KRB5_CONF_K5LOGIN_DIRECTORY           "k5login_directory"
#define KRB5_CONF_KADMIND_PORT                "kadmind_port"
#define KRB5_CONF_KRB524_SERVER               "krb524_server"
#define KRB5_CONF_KDC                         "kdc"
#define KRB5_CONF_KDCDEFAULTS                 "kdcdefaults"
#define KRB5_CONF_KDC_PORTS                   "kdc_ports"
#define KRB5_CONF_KDC_TCP_PORTS               "kdc_tcp_ports"
#define KRB5_CONF_MAX_DGRAM_REPLY_SIZE        "kdc_max_dgram_reply_size"
#define KRB5_CONF_KDC_DEFAULT_OPTIONS         "kdc_default_options"
#define KRB5_CONF_KDC_TIMESYNC                "kdc_timesync"
#define KRB5_CONF_KDC_REQ_CHECKSUM_TYPE       "kdc_req_checksum_type"
#define KRB5_CONF_KEY_STASH_FILE              "key_stash_file"
#define KRB5_CONF_KPASSWD_PORT                "kpasswd_port"
#define KRB5_CONF_KPASSWD_SERVER              "kpasswd_server"
#define KRB5_CONF_LDAP_CONNS_PER_SERVER       "ldap_conns_per_server"
#define KRB5_CONF_LDAP_KADMIN_DN              "ldap_kadmind_dn"
#define KRB5_CONF_LDAP_KDC_DN                 "ldap_kdc_dn"
#define KRB5_CONF_LDAP_KERBEROS_CONTAINER_DN  "ldap_kerberos_container_dn"
#define KRB5_CONF_LDAP_KPASSWDD_DN            "ldap_kpasswdd_dn"
#define KRB5_CONF_LDAP_SERVERS                "ldap_servers"
#define KRB5_CONF_LDAP_SERVICE_PASSWORD_FILE  "ldap_service_password_file"
#define KRB5_CONF_LIBDEFAULTS                 "libdefaults"
#define KRB5_CONF_LOGGING                     "logging"
#define KRB5_CONF_MASTER_KEY_NAME             "master_key_name"
#define KRB5_CONF_MASTER_KEY_TYPE             "master_key_type"
#define KRB5_CONF_MASTER_KDC                  "master_kdc"
#define KRB5_CONF_MAX_LIFE                    "max_life"
#define KRB5_CONF_MAX_RENEWABLE_LIFE          "max_renewable_life"
#define KRB5_CONF_MODULE                      "module"
#define KRB5_CONF_NOADDRESSES                 "noaddresses"
#define KRB5_CONF_NO_HOST_REFERRAL            "no_host_referral"
#define KRB5_CONF_PERMITTED_ENCTYPES          "permitted_enctypes"
#define KRB5_CONF_PLUGINS                     "plugins"
#define KRB5_CONF_PLUGIN_BASE_DIR             "plugin_base_dir"
#define KRB5_CONF_PREFERRED_PREAUTH_TYPES     "preferred_preauth_types"
#define KRB5_CONF_PROXIABLE                   "proxiable"
#define KRB5_CONF_RDNS                        "rdns"
#define KRB5_CONF_REALMS                      "realms"
#define KRB5_CONF_REALM_TRY_DOMAINS           "realm_try_domains"
#define KRB5_CONF_REJECT_BAD_TRANSIT          "reject_bad_transit"
#define KRB5_CONF_RENEW_LIFETIME              "renew_lifetime"
#define KRB5_CONF_RESTRICT_ANONYMOUS_TO_TGT   "restrict_anonymous_to_tgt"
#define KRB5_CONF_ASSUME_DES_CRC_SESSION      "des_crc_session_supported"
#define KRB5_CONF_SAFE_CHECKSUM_TYPE          "safe_checksum_type"
#define KRB5_CONF_SUPPORTED_ENCTYPES          "supported_enctypes"
#define KRB5_CONF_TICKET_LIFETIME             "ticket_lifetime"
#define KRB5_CONF_UDP_PREFERENCE_LIMIT        "udp_preference_limit"
#define KRB5_CONF_VERIFY_AP_REQ_NOFAIL        "verify_ap_req_nofail"
#define KRB5_CONF_V4_INSTANCE_CONVERT         "v4_instance_convert"
#define KRB5_CONF_V4_REALM                    "v4_realm"
#define KRB5_CONF_ASTERISK                    "*"

/* Cache configuration variables */
#define KRB5_CONF_FAST_AVAIL                  "fast_avail"
#define KRB5_CONF_PROXY_IMPERSONATOR          "proxy_impersonator"
#define KRB5_CONF_REFRESH_TIME                "refresh_time"

/* Error codes used in KRB_ERROR protocol messages.
   Return values of library routines are based on a different error table
   (which allows non-ambiguous error codes between subsystems) */

/* KDC errors */
#define KDC_ERR_NONE                    0 /* No error */
#define KDC_ERR_NAME_EXP                1 /* Client's entry in DB expired */
#define KDC_ERR_SERVICE_EXP             2 /* Server's entry in DB expired */
#define KDC_ERR_BAD_PVNO                3 /* Requested pvno not supported */
#define KDC_ERR_C_OLD_MAST_KVNO         4 /* C's key encrypted in old master */
#define KDC_ERR_S_OLD_MAST_KVNO         5 /* S's key encrypted in old master */
#define KDC_ERR_C_PRINCIPAL_UNKNOWN     6 /* Client not found in Kerberos DB */
#define KDC_ERR_S_PRINCIPAL_UNKNOWN     7 /* Server not found in Kerberos DB */
#define KDC_ERR_PRINCIPAL_NOT_UNIQUE    8 /* Multiple entries in Kerberos DB */
#define KDC_ERR_NULL_KEY                9 /* The C or S has a null key */
#define KDC_ERR_CANNOT_POSTDATE         10 /* Tkt ineligible for postdating */
#define KDC_ERR_NEVER_VALID             11 /* Requested starttime > endtime */
#define KDC_ERR_POLICY                  12 /* KDC policy rejects request */
#define KDC_ERR_BADOPTION               13 /* KDC can't do requested opt. */
#define KDC_ERR_ENCTYPE_NOSUPP          14 /* No support for encryption type */
#define KDC_ERR_SUMTYPE_NOSUPP          15 /* No support for checksum type */
#define KDC_ERR_PADATA_TYPE_NOSUPP      16 /* No support for padata type */
#define KDC_ERR_TRTYPE_NOSUPP           17 /* No support for transited type */
#define KDC_ERR_CLIENT_REVOKED          18 /* C's creds have been revoked */
#define KDC_ERR_SERVICE_REVOKED         19 /* S's creds have been revoked */
#define KDC_ERR_TGT_REVOKED             20 /* TGT has been revoked */
#define KDC_ERR_CLIENT_NOTYET           21 /* C not yet valid */
#define KDC_ERR_SERVICE_NOTYET          22 /* S not yet valid */
#define KDC_ERR_KEY_EXP                 23 /* Password has expired */
#define KDC_ERR_PREAUTH_FAILED          24 /* Preauthentication failed */
#define KDC_ERR_PREAUTH_REQUIRED        25 /* Additional preauthentication */
                                           /* required */
#define KDC_ERR_SERVER_NOMATCH          26 /* Requested server and */
                                           /* ticket don't match*/
#define KDC_ERR_MUST_USE_USER2USER      27 /* Server principal valid for */
                                           /*   user2user only */
#define KDC_ERR_PATH_NOT_ACCEPTED       28 /* KDC policy rejected transited */
                                           /*   path */
#define KDC_ERR_SVC_UNAVAILABLE         29 /* A service is not
                                            * available that is
                                            * required to process the
                                            * request */
/* Application errors */
#define KRB_AP_ERR_BAD_INTEGRITY 31     /* Decrypt integrity check failed */
#define KRB_AP_ERR_TKT_EXPIRED  32      /* Ticket expired */
#define KRB_AP_ERR_TKT_NYV      33      /* Ticket not yet valid */
#define KRB_AP_ERR_REPEAT       34      /* Request is a replay */
#define KRB_AP_ERR_NOT_US       35      /* The ticket isn't for us */
#define KRB_AP_ERR_BADMATCH     36      /* Ticket/authenticator don't match */
#define KRB_AP_ERR_SKEW         37      /* Clock skew too great */
#define KRB_AP_ERR_BADADDR      38      /* Incorrect net address */
#define KRB_AP_ERR_BADVERSION   39      /* Protocol version mismatch */
#define KRB_AP_ERR_MSG_TYPE     40      /* Invalid message type */
#define KRB_AP_ERR_MODIFIED     41      /* Message stream modified */
#define KRB_AP_ERR_BADORDER     42      /* Message out of order */
#define KRB_AP_ERR_BADKEYVER    44      /* Key version is not available */
#define KRB_AP_ERR_NOKEY        45      /* Service key not available */
#define KRB_AP_ERR_MUT_FAIL     46      /* Mutual authentication failed */
#define KRB_AP_ERR_BADDIRECTION 47      /* Incorrect message direction */
#define KRB_AP_ERR_METHOD       48      /* Alternative authentication */
                                        /* method required */
#define KRB_AP_ERR_BADSEQ       49      /* Incorrect sequence numnber */
                                        /* in message */
#define KRB_AP_ERR_INAPP_CKSUM  50      /* Inappropriate type of */
                                        /* checksum in message */
#define KRB_AP_PATH_NOT_ACCEPTED 51     /* Policy rejects transited path */
#define KRB_ERR_RESPONSE_TOO_BIG 52     /* Response too big for UDP, */
                                        /*   retry with TCP */

/* other errors */
#define KRB_ERR_GENERIC         60      /* Generic error (description */
                                        /* in e-text) */
#define KRB_ERR_FIELD_TOOLONG   61      /* Field is too long for impl. */

/* PKINIT server-reported errors */
#define KDC_ERR_CLIENT_NOT_TRUSTED              62 /* client cert not trusted */
#define KDC_ERR_KDC_NOT_TRUSTED                 63
#define KDC_ERR_INVALID_SIG                     64 /* client signature verify failed */
#define KDC_ERR_DH_KEY_PARAMETERS_NOT_ACCEPTED  65 /* invalid Diffie-Hellman parameters */
#define KDC_ERR_CERTIFICATE_MISMATCH            66
#define KRB_AP_ERR_NO_TGT                       67
#define KDC_ERR_WRONG_REALM                     68
#define KRB_AP_ERR_USER_TO_USER_REQUIRED        69
#define KDC_ERR_CANT_VERIFY_CERTIFICATE         70 /* client cert not verifiable to */
                                                   /* trusted root cert */
#define KDC_ERR_INVALID_CERTIFICATE             71 /* client cert had invalid signature */
#define KDC_ERR_REVOKED_CERTIFICATE             72 /* client cert was revoked */
#define KDC_ERR_REVOCATION_STATUS_UNKNOWN       73 /* client cert revoked, reason unknown */
#define KDC_ERR_REVOCATION_STATUS_UNAVAILABLE   74
#define KDC_ERR_CLIENT_NAME_MISMATCH            75 /* mismatch between client cert and */
                                                   /* principal name */
#define KDC_ERR_INCONSISTENT_KEY_PURPOSE        77 /* bad extended key use */
#define KDC_ERR_DIGEST_IN_CERT_NOT_ACCEPTED     78 /* bad digest algorithm in client cert */
#define KDC_ERR_PA_CHECKSUM_MUST_BE_INCLUDED    79 /* missing paChecksum in PA-PK-AS-REQ */
#define KDC_ERR_DIGEST_IN_SIGNED_DATA_NOT_ACCEPTED 80 /* bad digest algorithm in SignedData */
#define KDC_ERR_PUBLIC_KEY_ENCRYPTION_NOT_SUPPORTED 81
#define KRB_AP_ERR_IAKERB_KDC_NOT_FOUND         85 /* The IAKERB proxy could
                                                      not find a KDC */
#define KRB_AP_ERR_IAKERB_KDC_NO_RESPONSE       86 /* The KDC did not respond
                                                      to the IAKERB proxy */

/*
 * A null-terminated array of this structure is returned by the KDC as
 * the data part of the ETYPE_INFO preauth type.  It informs the
 * client which encryption types are supported.
 * The  same data structure is used by both etype-info and etype-info2
 * but s2kparams must be null when encoding etype-info.
 */
typedef struct _krb5_etype_info_entry {
    krb5_magic      magic;
    krb5_enctype    etype;
    unsigned int    length;
    krb5_octet      *salt;
    krb5_data s2kparams;
} krb5_etype_info_entry;

/*
 *  This is essentially -1 without sign extension which can screw up
 *  comparisons on 64 bit machines. If the length is this value, then
 *  the salt data is not present. This is to distinguish between not
 *  being set and being of 0 length.
 */
#define KRB5_ETYPE_NO_SALT VALID_UINT_BITS

typedef krb5_etype_info_entry ** krb5_etype_info;

/* RFC 4537 */
typedef struct _krb5_etype_list {
    int             length;
    krb5_enctype    *etypes;
} krb5_etype_list;

/* sam_type values -- informational only */
#define PA_SAM_TYPE_ENIGMA     1   /*  Enigma Logic */
#define PA_SAM_TYPE_DIGI_PATH  2   /*  Digital Pathways */
#define PA_SAM_TYPE_SKEY_K0    3   /*  S/key where  KDC has key 0 */
#define PA_SAM_TYPE_SKEY       4   /*  Traditional S/Key */
#define PA_SAM_TYPE_SECURID    5   /*  Security Dynamics */
#define PA_SAM_TYPE_CRYPTOCARD 6   /*  CRYPTOCard */
#if 1 /* XXX need to figure out who has which numbers assigned */
#define PA_SAM_TYPE_ACTIVCARD_DEC  6   /*  ActivCard decimal mode */
#define PA_SAM_TYPE_ACTIVCARD_HEX  7   /*  ActivCard hex mode */
#define PA_SAM_TYPE_DIGI_PATH_HEX  8   /*  Digital Pathways hex mode */
#endif
#define PA_SAM_TYPE_EXP_BASE    128 /* experimental */
#define PA_SAM_TYPE_GRAIL               (PA_SAM_TYPE_EXP_BASE+0) /* testing */
#define PA_SAM_TYPE_SECURID_PREDICT     (PA_SAM_TYPE_EXP_BASE+1) /* special */

typedef struct _krb5_sam_challenge_2 {
    krb5_data       sam_challenge_2_body;
    krb5_checksum   **sam_cksum;            /* Array of checksums */
} krb5_sam_challenge_2;

typedef struct _krb5_sam_challenge_2_body {
    krb5_magic      magic;
    krb5_int32      sam_type; /* information */
    krb5_flags      sam_flags; /* KRB5_SAM_* values */
    krb5_data       sam_type_name;
    krb5_data       sam_track_id;
    krb5_data       sam_challenge_label;
    krb5_data       sam_challenge;
    krb5_data       sam_response_prompt;
    krb5_data       sam_pk_for_sad;
    krb5_int32      sam_nonce;
    krb5_enctype    sam_etype;
} krb5_sam_challenge_2_body;

typedef struct _krb5_sam_response_2 {
    krb5_magic      magic;
    krb5_int32      sam_type; /* informational */
    krb5_flags      sam_flags; /* KRB5_SAM_* values */
    krb5_data       sam_track_id; /* copied */
    krb5_enc_data   sam_enc_nonce_or_sad; /* krb5_enc_sam_response_enc */
    krb5_int32      sam_nonce;
} krb5_sam_response_2;

typedef struct _krb5_enc_sam_response_enc_2 {
    krb5_magic      magic;
    krb5_int32      sam_nonce;
    krb5_data       sam_sad;
} krb5_enc_sam_response_enc_2;

/*
 * Keep the pkinit definitions in a separate file so that the plugin
 * only has to include k5-int-pkinit.h rather than k5-int.h
 */

#include "k5-int-pkinit.h"

#define KRB5_OTP_FLAG_NEXTOTP        0x40000000
#define KRB5_OTP_FLAG_COMBINE        0x20000000
#define KRB5_OTP_FLAG_COLLECT_PIN    0x10000000
#define KRB5_OTP_FLAG_NO_COLLECT_PIN 0x08000000
#define KRB5_OTP_FLAG_ENCRYPT_NONCE  0x04000000
#define KRB5_OTP_FLAG_SEPARATE_PIN   0x02000000
#define KRB5_OTP_FLAG_CHECK_DIGIT    0x01000000

#define KRB5_OTP_FORMAT_DECIMAL      0x00000000
#define KRB5_OTP_FORMAT_HEXADECIMAL  0x00000001
#define KRB5_OTP_FORMAT_ALPHANUMERIC 0x00000002
#define KRB5_OTP_FORMAT_BINARY       0x00000003
#define KRB5_OTP_FORMAT_BASE64       0x00000004

typedef struct _krb5_otp_tokeninfo {
    krb5_flags flags;
    krb5_data vendor;
    krb5_data challenge;
    krb5_int32 length;          /* -1 for unspecified */
    krb5_int32 format;          /* -1 for unspecified */
    krb5_data token_id;
    krb5_data alg_id;
    krb5_algorithm_identifier **supported_hash_alg;
    krb5_int32 iteration_count; /* -1 for unspecified */
} krb5_otp_tokeninfo;

typedef struct _krb5_pa_otp_challenge {
    krb5_data nonce;
    krb5_data service;
    krb5_otp_tokeninfo **tokeninfo;
    krb5_data salt;
    krb5_data s2kparams;
} krb5_pa_otp_challenge;

typedef struct _krb5_pa_otp_req {
    krb5_int32 flags;
    krb5_data nonce;
    krb5_enc_data enc_data;
    krb5_algorithm_identifier *hash_alg;
    krb5_int32 iteration_count; /* -1 for unspecified */
    krb5_data otp_value;
    krb5_data pin;
    krb5_data challenge;
    krb5_timestamp time;
    krb5_data counter;
    krb5_int32 format;          /* -1 for unspecified */
    krb5_data token_id;
    krb5_data alg_id;
    krb5_data vendor;
} krb5_pa_otp_req;

#include <stdlib.h>
#include <string.h>

#ifndef HAVE_STRDUP
extern char *strdup (const char *);
#endif

#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif

#ifdef HAVE_SYS_TIME_H
#include <sys/time.h>
#ifdef TIME_WITH_SYS_TIME
#include <time.h>
#endif
#else
#include <time.h>
#endif

#ifdef HAVE_SYS_STAT_H
#include <sys/stat.h>                   /* struct stat, stat() */
#endif

#ifdef HAVE_SYS_PARAM_H
#include <sys/param.h>                  /* MAXPATHLEN */
#endif

#ifdef HAVE_SYS_FILE_H
#include <sys/file.h>                   /* prototypes for file-related
                                           syscalls; flags for open &
                                           friends */
#endif

#ifdef HAVE_FCNTL_H
#include <fcntl.h>
#endif

#include <stdio.h>

#include "k5-gmt_mktime.h"

struct sendto_callback_info;

/* libos.spec */
krb5_error_code krb5_lock_file(krb5_context, int, int);
krb5_error_code krb5_unlock_file(krb5_context, int);
krb5_error_code krb5_sendto_kdc(krb5_context, const krb5_data *,
                                const krb5_data *, krb5_data *, int *, int);

krb5_error_code krb5_get_krbhst(krb5_context, const krb5_data *, char *** );
krb5_error_code krb5_free_krbhst(krb5_context, char * const * );
krb5_error_code krb5_create_secure_file(krb5_context, const char * pathname);
krb5_error_code krb5_sync_disk_file(krb5_context, FILE *fp);

krb5_error_code krb5int_init_context_kdc(krb5_context *);

krb5_error_code krb5_os_init_context(krb5_context context, profile_t profile,
                                     krb5_flags flags);

void krb5_os_free_context(krb5_context);

/* This function is needed by KfM's KerberosPreferences API
 * because it needs to be able to specify "secure" */
krb5_error_code
os_get_default_config_files(profile_filespec_t **pfiles, krb5_boolean secure);

krb5_error_code
krb5_os_hostaddr(krb5_context, const char *, krb5_address ***);

krb5_error_code
krb5int_get_domain_realm_mapping(krb5_context , const char *, char ***);

struct derived_key {
    krb5_data constant;
    krb5_key dkey;
    struct derived_key *next;
};

/* Internal structure of an opaque key identifier */
struct krb5_key_st {
    krb5_keyblock keyblock;
    int refcount;
    struct derived_key *derived;
    /*
     * Cache of data private to the cipher implementation, which we
     * don't want to have to recompute for every operation.  This may
     * include key schedules, iteration counts, etc.
     *
     * The cipher implementation is responsible for setting this up
     * whenever needed, and the enc_provider key_cleanup method must
     * then be provided to dispose of it.
     */
    void *cache;
};

krb5_error_code
krb5int_arcfour_gsscrypt(const krb5_keyblock *keyblock, krb5_keyusage usage,
                         const krb5_data *kd_data, krb5_crypto_iov *data,
                         size_t num_data);

/*
 * Attempt to zero memory in a way that compilers won't optimize out.
 *
 * This mechanism should work even for heap storage about to be freed,
 * or automatic storage right before we return from a function.
 *
 * Then, even if we leak uninitialized memory someplace, or UNIX
 * "core" files get created with world-read access, some of the most
 * sensitive data in the process memory will already be safely wiped.
 *
 * We're not going so far -- yet -- as to try to protect key data that
 * may have been written into swap space....
 */
#ifdef _WIN32
# define zap(ptr, len) SecureZeroMemory(ptr, len)
#elif defined(__GNUC__)
static inline void zap(void *ptr, size_t len)
{
    memset(ptr, 0, len);
    /*
     * Some versions of gcc have gotten clever enough to eliminate a
     * memset call right before the block in question is released.
     * This (empty) asm requires it to assume that we're doing
     * something interesting with the stored (zero) value, so the
     * memset can't be eliminated.
     *
     * An optimizer that looks at assembly or object code may not be
     * fooled, and may still cause the memset to go away.  Address
     * that problem if and when we encounter it.
     *
     * This also may not be enough if free() does something
     * interesting like purge memory locations from a write-back cache
     * that hasn't written back the zero bytes yet.  A memory barrier
     * instruction would help in that case.
     */
    asm volatile ("" : : "g" (ptr), "g" (len));
}
#else
/* Use a function from libkrb5support to defeat inlining. */
# define zap(ptr, len) krb5int_zap(ptr, len)
#endif

/* Convenience function: zap and free ptr if it is non-NULL. */
static inline void
zapfree(void *ptr, size_t len)
{
    if (ptr != NULL) {
        zap(ptr, len);
        free(ptr);
    }
}

/* Convenience function: zap and free zero-terminated str if it is non-NULL. */
static inline void
zapfreestr(void *str)
{
    if (str != NULL) {
        zap(str, strlen((char *)str));
        free(str);
    }
}

/*
 * Combine two keys (normally used by the hardware preauth mechanism)
 */
krb5_error_code
krb5int_c_combine_keys(krb5_context context, krb5_keyblock *key1,
                       krb5_keyblock *key2, krb5_keyblock *outkey);

void krb5int_c_free_keyblock(krb5_context, krb5_keyblock *key);
void krb5int_c_free_keyblock_contents(krb5_context, krb5_keyblock *);
krb5_error_code krb5int_c_init_keyblock(krb5_context, krb5_enctype enctype,
                                        size_t length, krb5_keyblock **out);
krb5_error_code krb5int_c_copy_keyblock(krb5_context context,
                                        const krb5_keyblock *from,
                                        krb5_keyblock **to);
krb5_error_code krb5int_c_copy_keyblock_contents(krb5_context context,
                                                 const krb5_keyblock *from,
                                                 krb5_keyblock *to);

#ifdef KRB5_OLD_CRYPTO
/* old provider api */

krb5_error_code krb5_crypto_os_localaddr(krb5_address ***);

krb5_error_code krb5_crypto_us_timeofday(krb5_int32 *, krb5_int32 *);

#endif /* KRB5_OLD_CRYPTO */

/* this helper fct is in libkrb5, but it makes sense declared here. */

krb5_error_code
krb5_encrypt_keyhelper(krb5_context context, krb5_key key,
                       krb5_keyusage keyusage, const krb5_data *plain,
                       krb5_enc_data *cipher);

/*
 * End "los-proto.h"
 */

typedef struct _krb5_os_context {
    krb5_magic              magic;
    krb5_int32              time_offset;
    krb5_int32              usec_offset;
    krb5_int32              os_flags;
    char *                  default_ccname;
} *krb5_os_context;

/* Get the current time of day plus a specified offset. */
krb5_error_code k5_time_with_offset(krb5_timestamp offset,
                                    krb5_int32 offset_usec,
                                    krb5_timestamp *time_out,
                                    krb5_int32 *usec_out);

/*
 * Flags for the os_flags field
 *
 * KRB5_OS_TOFFSET_VALID means that the time offset fields are valid.
 * The intention is that this facility to correct the system clocks so
 * that they reflect the "real" time, for systems where for some
 * reason we can't set the system clock.  Instead we calculate the
 * offset between the system time and real time, and store the offset
 * in the os context so that we can correct the system clock as necessary.
 *
 * KRB5_OS_TOFFSET_TIME means that the time offset fields should be
 * returned as the time by the krb5 time routines.  This should only
 * be used for testing purposes (obviously!)
 */
#define KRB5_OS_TOFFSET_VALID   1
#define KRB5_OS_TOFFSET_TIME    2

/* lock mode flags */
#define KRB5_LOCKMODE_SHARED    0x0001
#define KRB5_LOCKMODE_EXCLUSIVE 0x0002
#define KRB5_LOCKMODE_DONTBLOCK 0x0004
#define KRB5_LOCKMODE_UNLOCK    0x0008

/*
 * Define our view of the size of a DES key.
 */
#define KRB5_MIT_DES_KEYSIZE            8
#define KRB5_MIT_DES3_KEYSIZE           24
#define KRB5_MIT_DES3_KEY_BYTES         21

/*
 * Check if des_int.h has been included before us.  If so, then check to see
 * that our view of the DES key size is the same as des_int.h's.
 */
#ifdef  MIT_DES_KEYSIZE
#if     MIT_DES_KEYSIZE != KRB5_MIT_DES_KEYSIZE
error(MIT_DES_KEYSIZE does not equal KRB5_MIT_DES_KEYSIZE)
#endif  /* MIT_DES_KEYSIZE != KRB5_MIT_DES_KEYSIZE */
#endif  /* MIT_DES_KEYSIZE */

/*
 * Begin "preauth.h"
 *
 * (Originally written by Glen Machin at Sandia Labs.)
 */
/*
 * Sandia National Laboratories also makes no representations about the
 * suitability of the modifications, or additions to this software for
 * any purpose.  It is provided "as is" without express or implied warranty.
 */
#ifndef KRB5_PREAUTH__
#define KRB5_PREAUTH__

#include <krb5/preauth_plugin.h>

typedef struct k5_response_items_st k5_response_items;
struct krb5_responder_context_st {
    k5_response_items *items;
};

typedef krb5_error_code
(*krb5_gic_get_as_key_fct)(krb5_context, krb5_principal, krb5_enctype,
                           krb5_prompter_fct, void *prompter_data,
                           krb5_data *salt, krb5_data *s2kparams,
                           krb5_keyblock *as_key, void *gak_data,
                           k5_response_items *ritems);

#define CLIENT_ROCK_MAGIC 0x4352434b
/*
 * This structure is passed into the clpreauth methods and passed back to
 * clpreauth callbacks so that they can locate the requested information.  It
 * is opaque to the plugin code and can be expanded in the future as new types
 * of requests are defined which may require other things to be passed through.
 * All pointer fields are aliases and should not be freed.
 */
struct krb5int_fast_request_state;
struct krb5_clpreauth_rock_st {
    krb5_magic magic;
    krb5_enctype *etype;
    struct krb5int_fast_request_state *fast_state;

    /*
     * These fields allow gak_fct to be called via the rock.  The
     * gak_fct and gak_data fields have an extra level of indirection
     * since they can change in the init_creds context.
     */
    krb5_keyblock *as_key;
    krb5_gic_get_as_key_fct *gak_fct;
    void **gak_data;
    krb5_boolean *default_salt;
    krb5_data *salt;
    krb5_data *s2kparams;
    krb5_principal client;
    krb5_prompter_fct prompter;
    void *prompter_data;

    /* Discovered offset of server time during preauth */
    krb5_timestamp pa_offset;
    krb5_int32 pa_offset_usec;
    enum { NO_OFFSET = 0, UNAUTH_OFFSET, AUTH_OFFSET } pa_offset_state;
    struct krb5_responder_context_st rctx;
};

typedef struct _krb5_pa_enc_ts {
    krb5_timestamp      patimestamp;
    krb5_int32          pausec;
} krb5_pa_enc_ts;

typedef struct _krb5_pa_for_user {
    krb5_principal      user;
    krb5_checksum       cksum;
    krb5_data           auth_package;
} krb5_pa_for_user;

typedef struct _krb5_s4u_userid {
    krb5_int32          nonce;
    krb5_principal      user;
    krb5_data           subject_cert;
    krb5_flags          options;
} krb5_s4u_userid;

#define KRB5_S4U_OPTS_CHECK_LOGON_HOURS         0x40000000 /* check logon hour restrictions */
#define KRB5_S4U_OPTS_USE_REPLY_KEY_USAGE       0x20000000 /* sign with usage 27 instead of 26 */

typedef struct _krb5_pa_s4u_x509_user {
    krb5_s4u_userid     user_id;
    krb5_checksum       cksum;
} krb5_pa_s4u_x509_user;

enum {
    KRB5_FAST_ARMOR_AP_REQUEST = 0x1
};

typedef struct _krb5_fast_armor {
    krb5_int32 armor_type;
    krb5_data armor_value;
} krb5_fast_armor;
typedef struct _krb5_fast_armored_req {
    krb5_magic magic;
    krb5_fast_armor *armor;
    krb5_checksum req_checksum;
    krb5_enc_data enc_part;
} krb5_fast_armored_req;

typedef struct _krb5_fast_req {
    krb5_magic magic;
    krb5_flags fast_options;
    /* padata from req_body is used*/
    krb5_kdc_req *req_body;
} krb5_fast_req;

/* Bits 0-15 are critical in fast options.*/
#define UNSUPPORTED_CRITICAL_FAST_OPTIONS 0x00ff
#define KRB5_FAST_OPTION_HIDE_CLIENT_NAMES 0x01

typedef struct _krb5_fast_finished {
    krb5_timestamp timestamp;
    krb5_int32 usec;
    krb5_principal client;
    krb5_checksum ticket_checksum;
} krb5_fast_finished;

typedef struct _krb5_fast_response {
    krb5_magic magic;
    krb5_pa_data **padata;
    krb5_keyblock *strengthen_key;
    krb5_fast_finished *finished;
    krb5_int32 nonce;
} krb5_fast_response;

typedef struct _krb5_ad_kdcissued {
    krb5_checksum ad_checksum;
    krb5_principal i_principal;
    krb5_authdata **elements;
} krb5_ad_kdcissued;

typedef struct _krb5_ad_signedpath_data {
    krb5_principal client;
    krb5_timestamp authtime;
    krb5_principal *delegated;
    krb5_pa_data **method_data;
    krb5_authdata **authorization_data;
} krb5_ad_signedpath_data;

typedef struct _krb5_ad_signedpath {
    krb5_enctype enctype;
    krb5_checksum checksum;
    krb5_principal *delegated;
    krb5_pa_data **method_data;
} krb5_ad_signedpath;

typedef struct _krb5_iakerb_header {
    krb5_data target_realm;
    krb5_data *cookie;
} krb5_iakerb_header;

typedef struct _krb5_iakerb_finished {
    krb5_checksum checksum;
} krb5_iakerb_finished;

typedef krb5_error_code
(*krb5_preauth_obtain_proc)(krb5_context, krb5_pa_data *,
                            krb5_etype_info, krb5_keyblock *,
                            krb5_error_code (*)(krb5_context,
                                                const krb5_enctype,
                                                krb5_data *,
                                                krb5_const_pointer,
                                                krb5_keyblock **),
                            krb5_const_pointer, krb5_creds *,
                            krb5_kdc_req *, krb5_pa_data **);

typedef krb5_error_code
(*krb5_preauth_process_proc)(krb5_context, krb5_pa_data *, krb5_kdc_req *,
                             krb5_kdc_rep *,
                             krb5_error_code (*)(krb5_context,
                                                 const krb5_enctype,
                                                 krb5_data *,
                                                 krb5_const_pointer,
                                                 krb5_keyblock **),
                             krb5_const_pointer,
                             krb5_error_code (*)(krb5_context,
                                                 const krb5_keyblock *,
                                                 krb5_const_pointer,
                                                 krb5_kdc_rep * ),
                             krb5_keyblock **, krb5_creds *, krb5_int32 *,
                             krb5_int32 *);

typedef struct _krb5_preauth_ops {
    krb5_magic magic;
    int     type;
    int flags;
    krb5_preauth_obtain_proc    obtain;
    krb5_preauth_process_proc   process;
} krb5_preauth_ops;

krb5_pa_data *
krb5int_find_pa_data(krb5_context, krb5_pa_data *const *, krb5_preauthtype);
/* Does not return a copy; original padata sequence responsible for freeing*/

void krb5_free_etype_info(krb5_context, krb5_etype_info);

/*
 * Preauthentication property flags
 */
#define KRB5_PREAUTH_FLAGS_ENCRYPT      0x00000001
#define KRB5_PREAUTH_FLAGS_HARDWARE     0x00000002

#endif /* KRB5_PREAUTH__ */
/*
 * End "preauth.h"
 */

/*
 * Extending the krb5_get_init_creds_opt structure.  The original
 * krb5_get_init_creds_opt structure is defined publicly.  The
 * new extended version is private.  The original interface
 * assumed a pre-allocated structure which was passed to
 * krb5_get_init_creds_init().  The new interface assumes that
 * the caller will call krb5_get_init_creds_alloc() and
 * krb5_get_init_creds_free().
 *
 * Callers MUST NOT call krb5_get_init_creds_init() after allocating an
 * opts structure using krb5_get_init_creds_alloc().  To do so will
 * introduce memory leaks.  Unfortunately, there is no way to enforce
 * this behavior.
 *
 * Two private flags are added for backward compatibility.
 * KRB5_GET_INIT_CREDS_OPT_EXTENDED says that the structure was allocated
 * with the new krb5_get_init_creds_opt_alloc() function.
 * KRB5_GET_INIT_CREDS_OPT_SHADOWED is set to indicate that the extended
 * structure is a shadow copy of an original krb5_get_init_creds_opt
 * structure.
 * If KRB5_GET_INIT_CREDS_OPT_SHADOWED is set after a call to
 * krb5int_gic_opt_to_opte(), the resulting extended structure should be
 * freed (using krb5_get_init_creds_free).  Otherwise, the original
 * structure was already extended and there is no need to free it.
 */

#define KRB5_GET_INIT_CREDS_OPT_EXTENDED 0x80000000
#define KRB5_GET_INIT_CREDS_OPT_SHADOWED 0x40000000

#define krb5_gic_opt_is_extended(s)                                     \
    ((s) && ((s)->flags & KRB5_GET_INIT_CREDS_OPT_EXTENDED) ? 1 : 0)
#define krb5_gic_opt_is_shadowed(s)                                     \
    ((s) && ((s)->flags & KRB5_GET_INIT_CREDS_OPT_SHADOWED) ? 1 : 0)


typedef struct _krb5_gic_opt_private {
    int num_preauth_data;
    krb5_gic_opt_pa_data *preauth_data;
    char * fast_ccache_name;
    krb5_ccache in_ccache;
    krb5_ccache out_ccache;
    krb5_flags fast_flags;
    krb5_expire_callback_func expire_cb;
    void *expire_data;
    krb5_responder_fn responder;
    void *responder_data;
} krb5_gic_opt_private;

/*
 * On the Mac, ensure that the layout of krb5_gic_opt_ext matches that
 * of krb5_get_init_creds_opt.
 */
#if TARGET_OS_MAC
#    pragma pack(push,2)
#endif

typedef struct _krb5_gic_opt_ext {
    krb5_flags flags;
    krb5_deltat tkt_life;
    krb5_deltat renew_life;
    int forwardable;
    int proxiable;
    krb5_enctype *etype_list;
    int etype_list_length;
    krb5_address **address_list;
    krb5_preauthtype *preauth_list;
    int preauth_list_length;
    krb5_data *salt;
    /*
     * Do not change anything above this point in this structure.
     * It is identical to the public krb5_get_init_creds_opt structure.
     * New members must be added below.
     */
    krb5_gic_opt_private *opt_private;
} krb5_gic_opt_ext;

#if TARGET_OS_MAC
#    pragma pack(pop)
#endif

krb5_error_code
krb5int_gic_opt_to_opte(krb5_context context, krb5_get_init_creds_opt *opt,
                        krb5_gic_opt_ext **opte, unsigned int force,
                        const char *where);

krb5_error_code
krb5int_copy_data_contents(krb5_context, const krb5_data *, krb5_data *);

krb5_error_code
krb5int_copy_data_contents_add0(krb5_context, const krb5_data *, krb5_data *);

krb5_error_code
krb5int_copy_creds_contents(krb5_context, const krb5_creds *, krb5_creds *);

krb5_error_code KRB5_CALLCONV
krb5int_get_init_creds(krb5_context context, krb5_creds *creds,
                       krb5_principal client, krb5_prompter_fct prompter,
                       void *prompter_data, krb5_deltat start_time,
                       const char *in_tkt_service,
                       krb5_get_init_creds_opt *options,
                       krb5_gic_get_as_key_fct gak, void *gak_data,
                       int *master, krb5_kdc_rep **as_reply);

krb5_error_code
krb5int_populate_gic_opt (krb5_context, krb5_get_init_creds_opt **,
                          krb5_flags options, krb5_address *const *addrs,
                          krb5_enctype *ktypes,
                          krb5_preauthtype *pre_auth_types, krb5_creds *creds);


krb5_error_code KRB5_CALLCONV
krb5_do_preauth(krb5_context context, krb5_kdc_req *request,


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