simple kerberos5 routines for active directory
Copyright (C) Andrew Tridgell 2001
Copyright (C) Luke Howard 2002-2003
+ Copyright (C) Andrew Bartlett <abartlet@samba.org> 2005
+ Copyright (C) Guenther Deschner 2005-2007
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
+#define KRB5_PRIVATE 1 /* this file uses PRIVATE interfaces! */
+#define KRB5_DEPRECATED 1 /* this file uses DEPRECATED interfaces! */
+
#include "includes.h"
#ifdef HAVE_KRB5
-#ifdef HAVE_KRB5_KEYBLOCK_KEYVALUE
-#define KRB5_KEY_TYPE(k) ((k)->keytype)
+#ifdef HAVE_KRB5_KEYBLOCK_KEYVALUE /* Heimdal */
+#define KRB5_KEY_TYPE(k) ((k)->keytype)
#define KRB5_KEY_LENGTH(k) ((k)->keyvalue.length)
#define KRB5_KEY_DATA(k) ((k)->keyvalue.data)
-#else
+#else /* MIT */
#define KRB5_KEY_TYPE(k) ((k)->enctype)
#define KRB5_KEY_LENGTH(k) ((k)->length)
#define KRB5_KEY_DATA(k) ((k)->contents)
#endif /* HAVE_KRB5_KEYBLOCK_KEYVALUE */
+/**************************************************************
+ Wrappers around kerberos string functions that convert from
+ utf8 -> unix charset and vica versa.
+**************************************************************/
+
+/**************************************************************
+ krb5_parse_name that takes a UNIX charset.
+**************************************************************/
+
+ krb5_error_code smb_krb5_parse_name(krb5_context context,
+ const char *name, /* in unix charset */
+ krb5_principal *principal)
+{
+ krb5_error_code ret;
+ char *utf8_name;
+
+ if (push_utf8_allocate(&utf8_name, name) == (size_t)-1) {
+ return ENOMEM;
+ }
+
+ ret = krb5_parse_name(context, utf8_name, principal);
+ SAFE_FREE(utf8_name);
+ return ret;
+}
+
+#ifdef HAVE_KRB5_PARSE_NAME_NOREALM
+/**************************************************************
+ krb5_parse_name_norealm that takes a UNIX charset.
+**************************************************************/
+
+static krb5_error_code smb_krb5_parse_name_norealm_conv(krb5_context context,
+ const char *name, /* in unix charset */
+ krb5_principal *principal)
+{
+ krb5_error_code ret;
+ char *utf8_name;
+
+ *principal = NULL;
+ if (push_utf8_allocate(&utf8_name, name) == (size_t)-1) {
+ return ENOMEM;
+ }
+
+ ret = krb5_parse_name_norealm(context, utf8_name, principal);
+ SAFE_FREE(utf8_name);
+ return ret;
+}
+#endif
+
+/**************************************************************
+ krb5_parse_name that returns a UNIX charset name. Must
+ be freed with normal free() call.
+**************************************************************/
+
+ krb5_error_code smb_krb5_unparse_name(krb5_context context,
+ krb5_const_principal principal,
+ char **unix_name)
+{
+ krb5_error_code ret;
+ char *utf8_name;
+
+ *unix_name = NULL;
+ ret = krb5_unparse_name(context, principal, &utf8_name);
+ if (ret) {
+ return ret;
+ }
+
+ if (pull_utf8_allocate(unix_name, utf8_name)==-1) {
+ krb5_free_unparsed_name(context, utf8_name);
+ return ENOMEM;
+ }
+ krb5_free_unparsed_name(context, utf8_name);
+ return 0;
+}
+
#ifndef HAVE_KRB5_SET_REAL_TIME
/*
* This function is not in the Heimdal mainline.
}
#endif
-#if defined(HAVE_KRB5_SET_DEFAULT_IN_TKT_ETYPES) && !defined(HAVE_KRB5_SET_DEFAULT_TGS_KTYPES)
+#if !defined(HAVE_KRB5_SET_DEFAULT_TGS_KTYPES)
+
+#if defined(HAVE_KRB5_SET_DEFAULT_TGS_ENCTYPES)
+
+/* With MIT kerberos, we should use krb5_set_default_tgs_enctypes in preference
+ * to krb5_set_default_tgs_ktypes. See
+ * http://lists.samba.org/archive/samba-technical/2006-July/048271.html
+ *
+ * If the MIT libraries are not exporting internal symbols, we will end up in
+ * this branch, which is correct. Otherwise we will continue to use the
+ * internal symbol
+ */
+ krb5_error_code krb5_set_default_tgs_ktypes(krb5_context ctx, const krb5_enctype *enc)
+{
+ return krb5_set_default_tgs_enctypes(ctx, enc);
+}
+
+#elif defined(HAVE_KRB5_SET_DEFAULT_IN_TKT_ETYPES)
+
+/* Heimdal */
krb5_error_code krb5_set_default_tgs_ktypes(krb5_context ctx, const krb5_enctype *enc)
{
return krb5_set_default_in_tkt_etypes(ctx, enc);
}
-#endif
+
+#endif /* HAVE_KRB5_SET_DEFAULT_TGS_ENCTYPES */
+
+#endif /* HAVE_KRB5_SET_DEFAULT_TGS_KTYPES */
#if defined(HAVE_ADDR_TYPE_IN_KRB5_ADDRESS)
/* HEIMDAL */
#error UNKNOWN_ADDRTYPE
#endif
-#if defined(HAVE_KRB5_PRINCIPAL2SALT) && defined(HAVE_KRB5_USE_ENCTYPE) && defined(HAVE_KRB5_STRING_TO_KEY)
+#if defined(HAVE_KRB5_PRINCIPAL2SALT) && defined(HAVE_KRB5_USE_ENCTYPE) && defined(HAVE_KRB5_STRING_TO_KEY) && defined(HAVE_KRB5_ENCRYPT_BLOCK)
int create_kerberos_key_from_string_direct(krb5_context context,
krb5_principal host_princ,
krb5_data *password,
DEBUG(1,("krb5_get_pw_salt failed (%s)\n", error_message(ret)));
return ret;
}
- return krb5_string_to_key_salt(context, enctype, password->data,
- salt, key);
+
+ ret = krb5_string_to_key_salt(context, enctype, (const char *)password->data, salt, key);
+ krb5_free_salt(context, salt);
+ return ret;
}
#else
#error UNKNOWN_CREATE_KEY_FUNCTIONS
#error UNKNOWN_GET_ENCTYPES_FUNCTIONS
#endif
- void free_kerberos_etypes(krb5_context context,
- krb5_enctype *enctypes)
-{
-#if defined(HAVE_KRB5_FREE_KTYPES)
- krb5_free_ktypes(context, enctypes);
- return;
-#else
- SAFE_FREE(enctypes);
- return;
-#endif
-}
-
#if defined(HAVE_KRB5_AUTH_CON_SETKEY) && !defined(HAVE_KRB5_AUTH_CON_SETUSERUSERKEY)
krb5_error_code krb5_auth_con_setuseruserkey(krb5_context context,
krb5_auth_context auth_context,
}
#endif
- void get_auth_data_from_tkt(DATA_BLOB *auth_data, krb5_ticket *tkt)
+BOOL unwrap_edata_ntstatus(TALLOC_CTX *mem_ctx,
+ DATA_BLOB *edata,
+ DATA_BLOB *edata_out)
+{
+ DATA_BLOB edata_contents;
+ ASN1_DATA data;
+ int edata_type;
+
+ if (!edata->length) {
+ return False;
+ }
+
+ asn1_load(&data, *edata);
+ asn1_start_tag(&data, ASN1_SEQUENCE(0));
+ asn1_start_tag(&data, ASN1_CONTEXT(1));
+ asn1_read_Integer(&data, &edata_type);
+
+ if (edata_type != KRB5_PADATA_PW_SALT) {
+ DEBUG(0,("edata is not of required type %d but of type %d\n",
+ KRB5_PADATA_PW_SALT, edata_type));
+ asn1_free(&data);
+ return False;
+ }
+
+ asn1_start_tag(&data, ASN1_CONTEXT(2));
+ asn1_read_OctetString(&data, &edata_contents);
+ asn1_end_tag(&data);
+ asn1_end_tag(&data);
+ asn1_end_tag(&data);
+ asn1_free(&data);
+
+ *edata_out = data_blob_talloc(mem_ctx, edata_contents.data, edata_contents.length);
+
+ data_blob_free(&edata_contents);
+
+ return True;
+}
+
+
+BOOL unwrap_pac(TALLOC_CTX *mem_ctx, DATA_BLOB *auth_data, DATA_BLOB *unwrapped_pac_data)
+{
+ DATA_BLOB pac_contents;
+ ASN1_DATA data;
+ int data_type;
+
+ if (!auth_data->length) {
+ return False;
+ }
+
+ asn1_load(&data, *auth_data);
+ asn1_start_tag(&data, ASN1_SEQUENCE(0));
+ asn1_start_tag(&data, ASN1_SEQUENCE(0));
+ asn1_start_tag(&data, ASN1_CONTEXT(0));
+ asn1_read_Integer(&data, &data_type);
+
+ if (data_type != KRB5_AUTHDATA_WIN2K_PAC ) {
+ DEBUG(10,("authorization data is not a Windows PAC (type: %d)\n", data_type));
+ asn1_free(&data);
+ return False;
+ }
+
+ asn1_end_tag(&data);
+ asn1_start_tag(&data, ASN1_CONTEXT(1));
+ asn1_read_OctetString(&data, &pac_contents);
+ asn1_end_tag(&data);
+ asn1_end_tag(&data);
+ asn1_end_tag(&data);
+ asn1_free(&data);
+
+ *unwrapped_pac_data = data_blob_talloc(mem_ctx, pac_contents.data, pac_contents.length);
+
+ data_blob_free(&pac_contents);
+
+ return True;
+}
+
+ BOOL get_auth_data_from_tkt(TALLOC_CTX *mem_ctx, DATA_BLOB *auth_data, krb5_ticket *tkt)
{
+ DATA_BLOB auth_data_wrapped;
+ BOOL got_auth_data_pac = False;
+ int i;
+
#if defined(HAVE_KRB5_TKT_ENC_PART2)
- if (tkt->enc_part2)
- *auth_data = data_blob(tkt->enc_part2->authorization_data[0]->contents,
- tkt->enc_part2->authorization_data[0]->length);
+ if (tkt->enc_part2 && tkt->enc_part2->authorization_data &&
+ tkt->enc_part2->authorization_data[0] &&
+ tkt->enc_part2->authorization_data[0]->length)
+ {
+ for (i = 0; tkt->enc_part2->authorization_data[i] != NULL; i++) {
+
+ if (tkt->enc_part2->authorization_data[i]->ad_type !=
+ KRB5_AUTHDATA_IF_RELEVANT) {
+ DEBUG(10,("get_auth_data_from_tkt: ad_type is %d\n",
+ tkt->enc_part2->authorization_data[i]->ad_type));
+ continue;
+ }
+
+ auth_data_wrapped = data_blob(tkt->enc_part2->authorization_data[i]->contents,
+ tkt->enc_part2->authorization_data[i]->length);
+
+ /* check if it is a PAC */
+ got_auth_data_pac = unwrap_pac(mem_ctx, &auth_data_wrapped, auth_data);
+ data_blob_free(&auth_data_wrapped);
+
+ if (!got_auth_data_pac) {
+ continue;
+ }
+ }
+
+ return got_auth_data_pac;
+ }
+
#else
- if (tkt->ticket.authorization_data && tkt->ticket.authorization_data->len)
- *auth_data = data_blob(tkt->ticket.authorization_data->val->ad_data.data,
- tkt->ticket.authorization_data->val->ad_data.length);
+ if (tkt->ticket.authorization_data &&
+ tkt->ticket.authorization_data->len)
+ {
+ for (i = 0; i < tkt->ticket.authorization_data->len; i++) {
+
+ if (tkt->ticket.authorization_data->val[i].ad_type !=
+ KRB5_AUTHDATA_IF_RELEVANT) {
+ DEBUG(10,("get_auth_data_from_tkt: ad_type is %d\n",
+ tkt->ticket.authorization_data->val[i].ad_type));
+ continue;
+ }
+
+ auth_data_wrapped = data_blob(tkt->ticket.authorization_data->val[i].ad_data.data,
+ tkt->ticket.authorization_data->val[i].ad_data.length);
+
+ /* check if it is a PAC */
+ got_auth_data_pac = unwrap_pac(mem_ctx, &auth_data_wrapped, auth_data);
+ data_blob_free(&auth_data_wrapped);
+
+ if (!got_auth_data_pac) {
+ continue;
+ }
+ }
+
+ return got_auth_data_pac;
+ }
#endif
+ return False;
}
krb5_const_principal get_principal_from_tkt(krb5_ticket *tkt)
}
#if !defined(HAVE_KRB5_LOCATE_KDC)
- krb5_error_code krb5_locate_kdc(krb5_context ctx, const krb5_data *realm, struct sockaddr **addr_pp, int *naddrs, int get_masters)
+
+/* krb5_locate_kdc is an internal MIT symbol. MIT are not yet willing to commit
+ * to a public interface for this functionality, so we have to be able to live
+ * without it if the MIT libraries are hiding their internal symbols.
+ */
+
+#if defined(KRB5_KRBHST_INIT)
+/* Heimdal */
+ krb5_error_code smb_krb5_locate_kdc(krb5_context ctx, const krb5_data *realm, struct sockaddr **addr_pp, int *naddrs, int get_masters)
{
krb5_krbhst_handle hnd;
krb5_krbhst_info *hinfo;
rc = krb5_krbhst_init(ctx, realm->data, KRB5_KRBHST_KDC, &hnd);
if (rc) {
- DEBUG(0, ("krb5_locate_kdc: krb5_krbhst_init failed (%s)\n", error_message(rc)));
+ DEBUG(0, ("smb_krb5_locate_kdc: krb5_krbhst_init failed (%s)\n", error_message(rc)));
return rc;
}
krb5_krbhst_reset(ctx, hnd);
if (!num_kdcs) {
- DEBUG(0, ("krb5_locate_kdc: zero kdcs found !\n"));
+ DEBUG(0, ("smb_krb5_locate_kdc: zero kdcs found !\n"));
krb5_krbhst_free(ctx, hnd);
return -1;
}
- sa = malloc( sizeof(struct sockaddr) * num_kdcs );
+ sa = SMB_MALLOC_ARRAY( struct sockaddr, num_kdcs );
if (!sa) {
- DEBUG(0, ("krb5_locate_kdc: malloc failed\n"));
+ DEBUG(0, ("smb_krb5_locate_kdc: malloc failed\n"));
krb5_krbhst_free(ctx, hnd);
naddrs = 0;
return -1;
}
- *addr_pp = malloc(sizeof(struct sockaddr) * num_kdcs);
- memset(*addr_pp, '\0', sizeof(struct sockaddr) * num_kdcs );
+ memset(sa, '\0', sizeof(struct sockaddr) * num_kdcs );
for (i = 0; i < num_kdcs && (rc = krb5_krbhst_next(ctx, hnd, &hinfo) == 0); i++) {
*addr_pp = sa;
return 0;
}
-#endif
+
+#else /* ! defined(KRB5_KRBHST_INIT) */
+
+ krb5_error_code smb_krb5_locate_kdc(krb5_context ctx, const krb5_data *realm,
+ struct sockaddr **addr_pp, int *naddrs, int get_masters)
+{
+ DEBUG(0, ("unable to explicitly locate the KDC on this platform\n"));
+ return KRB5_KDC_UNREACH;
+}
+
+#endif /* KRB5_KRBHST_INIT */
+
+#else /* ! HAVE_KRB5_LOCATE_KDC */
+
+ krb5_error_code smb_krb5_locate_kdc(krb5_context ctx, const krb5_data *realm,
+ struct sockaddr **addr_pp, int *naddrs, int get_masters)
+{
+ return krb5_locate_kdc(ctx, realm, addr_pp, naddrs, get_masters);
+}
+
+#endif /* HAVE_KRB5_LOCATE_KDC */
#if !defined(HAVE_KRB5_FREE_UNPARSED_NAME)
void krb5_free_unparsed_name(krb5_context context, char *val)
krb5_creds *credsp)
{
krb5_error_code retval;
+ const char *cc_type = krb5_cc_get_type(context, ccache);
- DEBUG(3, ("Ticket in ccache[%s] expiration %s\n",
- krb5_cc_default_name(context),
+ DEBUG(3, ("ads_cleanup_expired_creds: Ticket in ccache[%s:%s] expiration %s\n",
+ cc_type, krb5_cc_get_name(context, ccache),
http_timestring(credsp->times.endtime)));
/* we will probably need new tickets if the current ones
use memory ccaches, and a FILE one probably means that
we're using creds obtained outside of our exectuable
*/
- if (StrCaseCmp(krb5_cc_get_type(context, ccache), "FILE") == 0) {
- DEBUG(5, ("We do not remove creds from a FILE ccache\n"));
+ if (strequal(cc_type, "FILE")) {
+ DEBUG(5, ("ads_cleanup_expired_creds: We do not remove creds from a %s ccache\n", cc_type));
return False;
}
-
+
retval = krb5_cc_remove_cred(context, ccache, 0, credsp);
if (retval) {
- DEBUG(1, ("krb5_cc_remove_cred failed, err %s\n",
+ DEBUG(1, ("ads_cleanup_expired_creds: krb5_cc_remove_cred failed, err %s\n",
error_message(retval)));
/* If we have an error in this, we want to display it,
but continue as though we deleted it */
const krb5_flags ap_req_options,
const char *principal,
krb5_ccache ccache,
- krb5_data *outbuf)
+ krb5_data *outbuf,
+ time_t *expire_time)
{
krb5_error_code retval;
krb5_principal server;
krb5_creds creds;
krb5_data in_data;
BOOL creds_ready = False;
+ int i = 0, maxtries = 3;
- retval = krb5_parse_name(context, principal, &server);
+ retval = smb_krb5_parse_name(context, principal, &server);
if (retval) {
- DEBUG(1,("Failed to parse principal %s\n", principal));
+ DEBUG(1,("ads_krb5_mk_req: Failed to parse principal %s\n", principal));
return retval;
}
/* obtain ticket & session key */
ZERO_STRUCT(creds);
if ((retval = krb5_copy_principal(context, server, &creds.server))) {
- DEBUG(1,("krb5_copy_principal failed (%s)\n",
+ DEBUG(1,("ads_krb5_mk_req: krb5_copy_principal failed (%s)\n",
error_message(retval)));
goto cleanup_princ;
}
if ((retval = krb5_cc_get_principal(context, ccache, &creds.client))) {
- DEBUG(1,("krb5_cc_get_principal failed (%s)\n",
+ /* This can commonly fail on smbd startup with no ticket in the cache.
+ * Report at higher level than 1. */
+ DEBUG(3,("ads_krb5_mk_req: krb5_cc_get_principal failed (%s)\n",
error_message(retval)));
goto cleanup_creds;
}
- while(!creds_ready) {
+ while (!creds_ready && (i < maxtries)) {
+
if ((retval = krb5_get_credentials(context, 0, ccache,
&creds, &credsp))) {
- DEBUG(1,("krb5_get_credentials failed for %s (%s)\n",
+ DEBUG(1,("ads_krb5_mk_req: krb5_get_credentials failed for %s (%s)\n",
principal, error_message(retval)));
goto cleanup_creds;
}
/* cope with ticket being in the future due to clock skew */
if ((unsigned)credsp->times.starttime > time(NULL)) {
time_t t = time(NULL);
- int time_offset =(unsigned)credsp->times.starttime-t;
- DEBUG(4,("Advancing clock by %d seconds to cope with clock skew\n", time_offset));
+ int time_offset =(int)((unsigned)credsp->times.starttime-t);
+ DEBUG(4,("ads_krb5_mk_req: Advancing clock by %d seconds to cope with clock skew\n", time_offset));
krb5_set_real_time(context, t + time_offset + 1, 0);
}
- if (!ads_cleanup_expired_creds(context, ccache, credsp))
+ if (!ads_cleanup_expired_creds(context, ccache, credsp)) {
creds_ready = True;
+ }
+
+ i++;
}
- DEBUG(10,("Ticket (%s) in ccache (%s) is valid until: (%s - %d)\n",
- principal, krb5_cc_default_name(context),
+ DEBUG(10,("ads_krb5_mk_req: Ticket (%s) in ccache (%s:%s) is valid until: (%s - %u)\n",
+ principal, krb5_cc_get_type(context, ccache), krb5_cc_get_name(context, ccache),
http_timestring((unsigned)credsp->times.endtime),
(unsigned)credsp->times.endtime));
+ if (expire_time) {
+ *expire_time = (time_t)credsp->times.endtime;
+ }
+
in_data.length = 0;
retval = krb5_mk_req_extended(context, auth_context, ap_req_options,
&in_data, credsp, outbuf);
if (retval) {
- DEBUG(1,("krb5_mk_req_extended failed (%s)\n",
+ DEBUG(1,("ads_krb5_mk_req: krb5_mk_req_extended failed (%s)\n",
error_message(retval)));
}
get a kerberos5 ticket for the given service
*/
int cli_krb5_get_ticket(const char *principal, time_t time_offset,
- DATA_BLOB *ticket, DATA_BLOB *session_key_krb5)
+ DATA_BLOB *ticket, DATA_BLOB *session_key_krb5,
+ uint32 extra_ap_opts, const char *ccname,
+ time_t *tgs_expire)
+
{
krb5_error_code retval;
krb5_data packet;
ENCTYPE_DES_CBC_MD5,
ENCTYPE_DES_CBC_CRC,
ENCTYPE_NULL};
-
+
+ initialize_krb5_error_table();
retval = krb5_init_context(&context);
if (retval) {
- DEBUG(1,("krb5_init_context failed (%s)\n",
+ DEBUG(1,("cli_krb5_get_ticket: krb5_init_context failed (%s)\n",
error_message(retval)));
goto failed;
}
krb5_set_real_time(context, time(NULL) + time_offset, 0);
}
- if ((retval = krb5_cc_default(context, &ccdef))) {
- DEBUG(1,("krb5_cc_default failed (%s)\n",
+ if ((retval = krb5_cc_resolve(context, ccname ?
+ ccname : krb5_cc_default_name(context), &ccdef))) {
+ DEBUG(1,("cli_krb5_get_ticket: krb5_cc_default failed (%s)\n",
error_message(retval)));
goto failed;
}
if ((retval = krb5_set_default_tgs_ktypes(context, enc_types))) {
- DEBUG(1,("krb5_set_default_tgs_ktypes failed (%s)\n",
+ DEBUG(1,("cli_krb5_get_ticket: krb5_set_default_tgs_ktypes failed (%s)\n",
error_message(retval)));
goto failed;
}
if ((retval = ads_krb5_mk_req(context,
&auth_context,
- AP_OPTS_USE_SUBKEY,
+ AP_OPTS_USE_SUBKEY | (krb5_flags)extra_ap_opts,
principal,
- ccdef, &packet))) {
+ ccdef, &packet,
+ tgs_expire))) {
goto failed;
}
else
err = krb5_auth_con_getlocalsubkey(context, auth_context, &skey);
if (err == 0 && skey != NULL) {
- DEBUG(10, ("Got KRB5 session key of length %d\n", KRB5_KEY_LENGTH(skey)));
+ DEBUG(10, ("Got KRB5 session key of length %d\n", (int)KRB5_KEY_LENGTH(skey)));
*session_key = data_blob(KRB5_KEY_DATA(skey), KRB5_KEY_LENGTH(skey));
dump_data_pw("KRB5 Session Key:\n", session_key->data, session_key->length);
#if defined(HAVE_KRB5_PRINCIPAL_GET_COMP_STRING) && !defined(HAVE_KRB5_PRINC_COMPONENT)
+ const krb5_data *krb5_princ_component(krb5_context context, krb5_principal principal, int i );
+
const krb5_data *krb5_princ_component(krb5_context context, krb5_principal principal, int i )
{
static krb5_data kdata;
- kdata.data = krb5_principal_get_comp_string(context, principal, i);
- kdata.length = strlen(kdata.data);
+ kdata.data = (char *)krb5_principal_get_comp_string(context, principal, i);
+ kdata.length = strlen((const char *)kdata.data);
return &kdata;
}
#endif
#endif
}
+ void smb_krb5_checksum_from_pac_sig(krb5_checksum *cksum,
+ PAC_SIGNATURE_DATA *sig)
+{
+#ifdef HAVE_CHECKSUM_IN_KRB5_CHECKSUM
+ cksum->cksumtype = (krb5_cksumtype)sig->type;
+ cksum->checksum.length = sig->signature.buf_len;
+ cksum->checksum.data = sig->signature.buffer;
+#else
+ cksum->checksum_type = (krb5_cksumtype)sig->type;
+ cksum->length = sig->signature.buf_len;
+ cksum->contents = sig->signature.buffer;
+#endif
+}
+
+ krb5_error_code smb_krb5_verify_checksum(krb5_context context,
+ krb5_keyblock *keyblock,
+ krb5_keyusage usage,
+ krb5_checksum *cksum,
+ uint8 *data,
+ size_t length)
+{
+ krb5_error_code ret;
+
+ /* verify the checksum */
+
+ /* welcome to the wonderful world of samba's kerberos abstraction layer:
+ *
+ * function heimdal 0.6.1rc3 heimdal 0.7 MIT krb 1.4.2
+ * -----------------------------------------------------------------------------
+ * krb5_c_verify_checksum - works works
+ * krb5_verify_checksum works (6 args) works (6 args) broken (7 args)
+ */
+
+#if defined(HAVE_KRB5_C_VERIFY_CHECKSUM)
+ {
+ krb5_boolean checksum_valid = False;
+ krb5_data input;
+
+ input.data = (char *)data;
+ input.length = length;
+
+ ret = krb5_c_verify_checksum(context,
+ keyblock,
+ usage,
+ &input,
+ cksum,
+ &checksum_valid);
+ if (ret) {
+ DEBUG(3,("smb_krb5_verify_checksum: krb5_c_verify_checksum() failed: %s\n",
+ error_message(ret)));
+ return ret;
+ }
+
+ if (!checksum_valid)
+ ret = KRB5KRB_AP_ERR_BAD_INTEGRITY;
+ }
+
+#elif KRB5_VERIFY_CHECKSUM_ARGS == 6 && defined(HAVE_KRB5_CRYPTO_INIT) && defined(HAVE_KRB5_CRYPTO) && defined(HAVE_KRB5_CRYPTO_DESTROY)
+
+ /* Warning: MIT's krb5_verify_checksum cannot be used as it will use a key
+ * without enctype and it ignores any key_usage types - Guenther */
+
+ {
+
+ krb5_crypto crypto;
+ ret = krb5_crypto_init(context,
+ keyblock,
+ 0,
+ &crypto);
+ if (ret) {
+ DEBUG(0,("smb_krb5_verify_checksum: krb5_crypto_init() failed: %s\n",
+ error_message(ret)));
+ return ret;
+ }
+
+ ret = krb5_verify_checksum(context,
+ crypto,
+ usage,
+ data,
+ length,
+ cksum);
+
+ krb5_crypto_destroy(context, crypto);
+ }
+
+#else
+#error UNKNOWN_KRB5_VERIFY_CHECKSUM_FUNCTION
+#endif
+
+ return ret;
+}
+
+ time_t get_authtime_from_tkt(krb5_ticket *tkt)
+{
+#if defined(HAVE_KRB5_TKT_ENC_PART2)
+ return tkt->enc_part2->times.authtime;
+#else
+ return tkt->ticket.authtime;
+#endif
+}
+
+#ifdef HAVE_KRB5_DECODE_AP_REQ /* Heimdal */
+static int get_kvno_from_ap_req(krb5_ap_req *ap_req)
+{
+#ifdef HAVE_TICKET_POINTER_IN_KRB5_AP_REQ /* MIT */
+ if (ap_req->ticket->enc_part.kvno)
+ return ap_req->ticket->enc_part.kvno;
+#else /* Heimdal */
+ if (ap_req->ticket.enc_part.kvno)
+ return *ap_req->ticket.enc_part.kvno;
+#endif
+ return 0;
+}
+
+static krb5_enctype get_enctype_from_ap_req(krb5_ap_req *ap_req)
+{
+#ifdef HAVE_ETYPE_IN_ENCRYPTEDDATA /* Heimdal */
+ return ap_req->ticket.enc_part.etype;
+#else /* MIT */
+ return ap_req->ticket->enc_part.enctype;
+#endif
+}
+#endif /* HAVE_KRB5_DECODE_AP_REQ */
+
+static krb5_error_code
+get_key_from_keytab(krb5_context context,
+ krb5_const_principal server,
+ krb5_enctype enctype,
+ krb5_kvno kvno,
+ krb5_keyblock **out_key)
+{
+ krb5_keytab_entry entry;
+ krb5_error_code ret;
+ krb5_keytab keytab;
+ char *name = NULL;
+
+ /* We have to open a new keytab handle here, as MIT does
+ an implicit open/getnext/close on krb5_kt_get_entry. We
+ may be in the middle of a keytab enumeration when this is
+ called. JRA. */
+
+ ret = smb_krb5_open_keytab(context, NULL, False, &keytab);
+ if (ret) {
+ DEBUG(1,("get_key_from_keytab: smb_krb5_open_keytab failed (%s)\n", error_message(ret)));
+ return ret;
+ }
+
+ if ( DEBUGLEVEL >= 10 ) {
+ if (smb_krb5_unparse_name(context, server, &name) == 0) {
+ DEBUG(10,("get_key_from_keytab: will look for kvno %d, enctype %d and name: %s\n",
+ kvno, enctype, name));
+ SAFE_FREE(name);
+ }
+ }
+
+ ret = krb5_kt_get_entry(context,
+ keytab,
+ server,
+ kvno,
+ enctype,
+ &entry);
+
+ if (ret) {
+ DEBUG(0,("get_key_from_keytab: failed to retrieve key: %s\n", error_message(ret)));
+ goto out;
+ }
+
+#ifdef HAVE_KRB5_KEYTAB_ENTRY_KEYBLOCK /* Heimdal */
+ ret = krb5_copy_keyblock(context, &entry.keyblock, out_key);
+#elif defined(HAVE_KRB5_KEYTAB_ENTRY_KEY) /* MIT */
+ ret = krb5_copy_keyblock(context, &entry.key, out_key);
+#else
+#error UNKNOWN_KRB5_KEYTAB_ENTRY_FORMAT
+#endif
+
+ if (ret) {
+ DEBUG(0,("get_key_from_keytab: failed to copy key: %s\n", error_message(ret)));
+ goto out;
+ }
+
+ smb_krb5_kt_free_entry(context, &entry);
+
+out:
+ krb5_kt_close(context, keytab);
+ return ret;
+}
+
+/* Prototypes */
+
+ krb5_error_code smb_krb5_get_keyinfo_from_ap_req(krb5_context context,
+ const krb5_data *inbuf,
+ krb5_kvno *kvno,
+ krb5_enctype *enctype)
+{
+#ifdef HAVE_KRB5_DECODE_AP_REQ /* Heimdal */
+ {
+ krb5_error_code ret;
+ krb5_ap_req ap_req;
+
+ ret = krb5_decode_ap_req(context, inbuf, &ap_req);
+ if (ret)
+ return ret;
+
+ *kvno = get_kvno_from_ap_req(&ap_req);
+ *enctype = get_enctype_from_ap_req(&ap_req);
+
+ free_AP_REQ(&ap_req);
+ return 0;
+ }
+#endif
+
+ /* Possibly not an appropriate error code. */
+ return KRB5KDC_ERR_BADOPTION;
+}
+
+ krb5_error_code krb5_rd_req_return_keyblock_from_keytab(krb5_context context,
+ krb5_auth_context *auth_context,
+ const krb5_data *inbuf,
+ krb5_const_principal server,
+ krb5_keytab keytab,
+ krb5_flags *ap_req_options,
+ krb5_ticket **ticket,
+ krb5_keyblock **keyblock)
+{
+ krb5_error_code ret;
+ krb5_kvno kvno;
+ krb5_enctype enctype;
+ krb5_keyblock *local_keyblock;
+
+ ret = krb5_rd_req(context,
+ auth_context,
+ inbuf,
+ server,
+ keytab,
+ ap_req_options,
+ ticket);
+ if (ret) {
+ return ret;
+ }
+
+#ifdef KRB5_TICKET_HAS_KEYINFO
+ enctype = (*ticket)->enc_part.enctype;
+ kvno = (*ticket)->enc_part.kvno;
+#else
+ ret = smb_krb5_get_keyinfo_from_ap_req(context, inbuf, &kvno, &enctype);
+ if (ret) {
+ return ret;
+ }
+#endif
+
+ ret = get_key_from_keytab(context,
+ server,
+ enctype,
+ kvno,
+ &local_keyblock);
+ if (ret) {
+ DEBUG(0,("krb5_rd_req_return_keyblock_from_keytab: failed to call get_key_from_keytab\n"));
+ goto out;
+ }
+
+out:
+ if (ret && local_keyblock != NULL) {
+ krb5_free_keyblock(context, local_keyblock);
+ } else {
+ *keyblock = local_keyblock;
+ }
+
+ return ret;
+}
+
+ krb5_error_code smb_krb5_parse_name_norealm(krb5_context context,
+ const char *name,
+ krb5_principal *principal)
+{
+#ifdef HAVE_KRB5_PARSE_NAME_NOREALM
+ return smb_krb5_parse_name_norealm_conv(context, name, principal);
+#endif
+
+ /* we are cheating here because parse_name will in fact set the realm.
+ * We don't care as the only caller of smb_krb5_parse_name_norealm
+ * ignores the realm anyway when calling
+ * smb_krb5_principal_compare_any_realm later - Guenther */
+
+ return smb_krb5_parse_name(context, name, principal);
+}
+
+ BOOL smb_krb5_principal_compare_any_realm(krb5_context context,
+ krb5_const_principal princ1,
+ krb5_const_principal princ2)
+{
+#ifdef HAVE_KRB5_PRINCIPAL_COMPARE_ANY_REALM
+
+ return krb5_principal_compare_any_realm(context, princ1, princ2);
+
+/* krb5_princ_size is a macro in MIT */
+#elif defined(HAVE_KRB5_PRINC_SIZE) || defined(krb5_princ_size)
+
+ int i, len1, len2;
+ const krb5_data *p1, *p2;
+
+ len1 = krb5_princ_size(context, princ1);
+ len2 = krb5_princ_size(context, princ2);
+
+ if (len1 != len2)
+ return False;
+
+ for (i = 0; i < len1; i++) {
+
+ p1 = krb5_princ_component(context, CONST_DISCARD(krb5_principal, princ1), i);
+ p2 = krb5_princ_component(context, CONST_DISCARD(krb5_principal, princ2), i);
+
+ if (p1->length != p2->length || memcmp(p1->data, p2->data, p1->length))
+ return False;
+ }
+
+ return True;
+#else
+#error NO_SUITABLE_PRINCIPAL_COMPARE_FUNCTION
+#endif
+}
+
+ krb5_error_code smb_krb5_renew_ticket(const char *ccache_string, /* FILE:/tmp/krb5cc_0 */
+ const char *client_string, /* gd@BER.SUSE.DE */
+ const char *service_string, /* krbtgt/BER.SUSE.DE@BER.SUSE.DE */
+ time_t *expire_time)
+{
+ krb5_error_code ret;
+ krb5_context context = NULL;
+ krb5_ccache ccache = NULL;
+ krb5_principal client = NULL;
+ krb5_creds creds, creds_in, *creds_out = NULL;
+
+ ZERO_STRUCT(creds);
+ ZERO_STRUCT(creds_in);
+
+ initialize_krb5_error_table();
+ ret = krb5_init_context(&context);
+ if (ret) {
+ goto done;
+ }
+
+ if (!ccache_string) {
+ ccache_string = krb5_cc_default_name(context);
+ }
+
+ if (!ccache_string) {
+ ret = EINVAL;
+ goto done;
+ }
+
+ DEBUG(10,("smb_krb5_renew_ticket: using %s as ccache\n", ccache_string));
+
+ /* FIXME: we should not fall back to defaults */
+ ret = krb5_cc_resolve(context, CONST_DISCARD(char *, ccache_string), &ccache);
+ if (ret) {
+ goto done;
+ }
+
+ if (client_string) {
+ ret = smb_krb5_parse_name(context, client_string, &client);
+ if (ret) {
+ goto done;
+ }
+ } else {
+ ret = krb5_cc_get_principal(context, ccache, &client);
+ if (ret) {
+ goto done;
+ }
+ }
+
+#ifdef HAVE_KRB5_GET_RENEWED_CREDS /* MIT */
+ {
+ ret = krb5_get_renewed_creds(context, &creds, client, ccache, CONST_DISCARD(char *, service_string));
+ if (ret) {
+ DEBUG(10,("smb_krb5_renew_ticket: krb5_get_kdc_cred failed: %s\n", error_message(ret)));
+ goto done;
+ }
+ }
+#elif defined(HAVE_KRB5_GET_KDC_CRED) /* Heimdal */
+ {
+ krb5_kdc_flags flags;
+ krb5_realm *client_realm = NULL;
+
+ ret = krb5_copy_principal(context, client, &creds_in.client);
+ if (ret) {
+ goto done;
+ }
+
+ if (service_string) {
+ ret = smb_krb5_parse_name(context, service_string, &creds_in.server);
+ if (ret) {
+ goto done;
+ }
+ } else {
+ /* build tgt service by default */
+ client_realm = krb5_princ_realm(context, creds_in.client);
+ if (!client_realm) {
+ ret = ENOMEM;
+ goto done;
+ }
+ ret = krb5_make_principal(context, &creds_in.server, *client_realm, KRB5_TGS_NAME, *client_realm, NULL);
+ if (ret) {
+ goto done;
+ }
+ }
+
+ flags.i = 0;
+ flags.b.renewable = flags.b.renew = True;
+
+ ret = krb5_get_kdc_cred(context, ccache, flags, NULL, NULL, &creds_in, &creds_out);
+ if (ret) {
+ DEBUG(10,("smb_krb5_renew_ticket: krb5_get_kdc_cred failed: %s\n", error_message(ret)));
+ goto done;
+ }
+
+ creds = *creds_out;
+ }
+#else
+#error NO_SUITABLE_KRB5_TICKET_RENEW_FUNCTION_AVAILABLE
+#endif
+
+ /* hm, doesn't that create a new one if the old one wasn't there? - Guenther */
+ ret = krb5_cc_initialize(context, ccache, client);
+ if (ret) {
+ goto done;
+ }
+
+ ret = krb5_cc_store_cred(context, ccache, &creds);
+
+ if (expire_time) {
+ *expire_time = (time_t) creds.times.endtime;
+ }
+
+done:
+ krb5_free_cred_contents(context, &creds_in);
+
+ if (creds_out) {
+ krb5_free_creds(context, creds_out);
+ } else {
+ krb5_free_cred_contents(context, &creds);
+ }
+
+ if (client) {
+ krb5_free_principal(context, client);
+ }
+ if (ccache) {
+ krb5_cc_close(context, ccache);
+ }
+ if (context) {
+ krb5_free_context(context);
+ }
+
+ return ret;
+}
+
+ krb5_error_code smb_krb5_free_addresses(krb5_context context, smb_krb5_addresses *addr)
+{
+ krb5_error_code ret = 0;
+ if (addr == NULL) {
+ return ret;
+ }
+#if defined(HAVE_MAGIC_IN_KRB5_ADDRESS) && defined(HAVE_ADDRTYPE_IN_KRB5_ADDRESS) /* MIT */
+ krb5_free_addresses(context, addr->addrs);
+#elif defined(HAVE_ADDR_TYPE_IN_KRB5_ADDRESS) /* Heimdal */
+ ret = krb5_free_addresses(context, addr->addrs);
+ SAFE_FREE(addr->addrs);
+#endif
+ SAFE_FREE(addr);
+ addr = NULL;
+ return ret;
+}
+
+ krb5_error_code smb_krb5_gen_netbios_krb5_address(smb_krb5_addresses **kerb_addr)
+{
+ krb5_error_code ret = 0;
+ nstring buf;
+#if defined(HAVE_MAGIC_IN_KRB5_ADDRESS) && defined(HAVE_ADDRTYPE_IN_KRB5_ADDRESS) /* MIT */
+ krb5_address **addrs = NULL;
+#elif defined(HAVE_ADDR_TYPE_IN_KRB5_ADDRESS) /* Heimdal */
+ krb5_addresses *addrs = NULL;
+#endif
+
+ *kerb_addr = (smb_krb5_addresses *)SMB_MALLOC(sizeof(smb_krb5_addresses));
+ if (*kerb_addr == NULL) {
+ return ENOMEM;
+ }
+
+ put_name(buf, global_myname(), ' ', 0x20);
+
+#if defined(HAVE_MAGIC_IN_KRB5_ADDRESS) && defined(HAVE_ADDRTYPE_IN_KRB5_ADDRESS) /* MIT */
+ {
+ int num_addr = 2;
+
+ addrs = (krb5_address **)SMB_MALLOC(sizeof(krb5_address *) * num_addr);
+ if (addrs == NULL) {
+ SAFE_FREE(kerb_addr);
+ return ENOMEM;
+ }
+
+ memset(addrs, 0, sizeof(krb5_address *) * num_addr);
+
+ addrs[0] = (krb5_address *)SMB_MALLOC(sizeof(krb5_address));
+ if (addrs[0] == NULL) {
+ SAFE_FREE(addrs);
+ SAFE_FREE(kerb_addr);
+ return ENOMEM;
+ }
+
+ addrs[0]->magic = KV5M_ADDRESS;
+ addrs[0]->addrtype = KRB5_ADDR_NETBIOS;
+ addrs[0]->length = MAX_NETBIOSNAME_LEN;
+ addrs[0]->contents = (unsigned char *)SMB_MALLOC(addrs[0]->length);
+ if (addrs[0]->contents == NULL) {
+ SAFE_FREE(addrs[0]);
+ SAFE_FREE(addrs);
+ SAFE_FREE(kerb_addr);
+ return ENOMEM;
+ }
+
+ memcpy(addrs[0]->contents, buf, addrs[0]->length);
+
+ addrs[1] = NULL;
+ }
+#elif defined(HAVE_ADDR_TYPE_IN_KRB5_ADDRESS) /* Heimdal */
+ {
+ addrs = (krb5_addresses *)SMB_MALLOC(sizeof(krb5_addresses));
+ if (addrs == NULL) {
+ SAFE_FREE(kerb_addr);
+ return ENOMEM;
+ }
+
+ memset(addrs, 0, sizeof(krb5_addresses));
+
+ addrs->len = 1;
+ addrs->val = (krb5_address *)SMB_MALLOC(sizeof(krb5_address));
+ if (addrs->val == NULL) {
+ SAFE_FREE(addrs);
+ SAFE_FREE(kerb_addr);
+ return ENOMEM;
+ }
+
+ addrs->val[0].addr_type = KRB5_ADDR_NETBIOS;
+ addrs->val[0].address.length = MAX_NETBIOSNAME_LEN;
+ addrs->val[0].address.data = (unsigned char *)SMB_MALLOC(addrs->val[0].address.length);
+ if (addrs->val[0].address.data == NULL) {
+ SAFE_FREE(addrs->val);
+ SAFE_FREE(addrs);
+ SAFE_FREE(kerb_addr);
+ return ENOMEM;
+ }
+
+ memcpy(addrs->val[0].address.data, buf, addrs->val[0].address.length);
+ }
+#else
+#error UNKNOWN_KRB5_ADDRESS_FORMAT
+#endif
+ (*kerb_addr)->addrs = addrs;
+
+ return ret;
+}
+
+ void smb_krb5_free_error(krb5_context context, krb5_error *krberror)
+{
+#ifdef HAVE_KRB5_FREE_ERROR_CONTENTS /* Heimdal */
+ krb5_free_error_contents(context, krberror);
+#else /* MIT */
+ krb5_free_error(context, krberror);
+#endif
+}
+
+ krb5_error_code handle_krberror_packet(krb5_context context,
+ krb5_data *packet)
+{
+ krb5_error_code ret;
+ BOOL got_error_code = False;
+
+ DEBUG(10,("handle_krberror_packet: got error packet\n"));
+
+#ifdef HAVE_E_DATA_POINTER_IN_KRB5_ERROR /* Heimdal */
+ {
+ krb5_error krberror;
+
+ if ((ret = krb5_rd_error(context, packet, &krberror))) {
+ DEBUG(10,("handle_krberror_packet: krb5_rd_error failed with: %s\n",
+ error_message(ret)));
+ return ret;
+ }
+
+ if (krberror.e_data == NULL || krberror.e_data->data == NULL) {
+ ret = (krb5_error_code) krberror.error_code;
+ got_error_code = True;
+ }
+
+ smb_krb5_free_error(context, &krberror);
+ }
+#else /* MIT */
+ {
+ krb5_error *krberror;
+
+ if ((ret = krb5_rd_error(context, packet, &krberror))) {
+ DEBUG(10,("handle_krberror_packet: krb5_rd_error failed with: %s\n",
+ error_message(ret)));
+ return ret;
+ }
+
+ if (krberror->e_data.data == NULL) {
+ ret = ERROR_TABLE_BASE_krb5 + (krb5_error_code) krberror->error;
+ got_error_code = True;
+ }
+ smb_krb5_free_error(context, krberror);
+ }
+#endif
+ if (got_error_code) {
+ DEBUG(5,("handle_krberror_packet: got KERBERR from kpasswd: %s (%d)\n",
+ error_message(ret), ret));
+ }
+ return ret;
+}
+
+ krb5_error_code smb_krb5_get_init_creds_opt_alloc(krb5_context context,
+ krb5_get_init_creds_opt **opt)
+{
+#ifdef HAVE_KRB5_GET_INIT_CREDS_OPT_ALLOC
+ /* Heimdal or modern MIT version */
+ return krb5_get_init_creds_opt_alloc(context, opt);
+#else
+ /* Historical MIT version */
+ krb5_get_init_creds_opt *my_opt;
+
+ *opt = NULL;
+
+ if ((my_opt = SMB_MALLOC_P(krb5_get_init_creds_opt)) == NULL) {
+ return ENOMEM;
+ }
+
+ krb5_get_init_creds_opt_init(my_opt);
+
+ *opt = my_opt;
+ return 0;
+#endif /* HAVE_KRB5_GET_INIT_CREDS_OPT_ALLOC */
+}
+
+ void smb_krb5_get_init_creds_opt_free(krb5_context context,
+ krb5_get_init_creds_opt *opt)
+{
+#ifdef HAVE_KRB5_GET_INIT_CREDS_OPT_FREE
+
+#ifdef KRB5_CREDS_OPT_FREE_REQUIRES_CONTEXT
+ /* Modern MIT or Heimdal version */
+ krb5_get_init_creds_opt_free(context, opt);
+#else
+ /* Heimdal version */
+ krb5_get_init_creds_opt_free(opt);
+#endif /* KRB5_CREDS_OPT_FREE_REQUIRES_CONTEXT */
+
+#else /* HAVE_KRB5_GET_INIT_CREDS_OPT_FREE */
+ /* Historical MIT version */
+ SAFE_FREE(opt);
+ opt = NULL;
+#endif /* HAVE_KRB5_GET_INIT_CREDS_OPT_FREE */
+}
+
+ krb5_enctype smb_get_enctype_from_kt_entry(const krb5_keytab_entry *kt_entry)
+{
+#ifdef HAVE_KRB5_KEYTAB_ENTRY_KEY /* MIT */
+ return kt_entry->key.enctype;
+#elif defined(HAVE_KRB5_KEYTAB_ENTRY_KEYBLOCK) /* Heimdal */
+ return kt_entry->keyblock.keytype;
+#else
+#error UNKNOWN_KRB5_KEYTAB_ENTRY_KEYBLOCK_FORMAT
+#endif
+}
+
+
+/* caller needs to free etype_s */
+ krb5_error_code smb_krb5_enctype_to_string(krb5_context context,
+ krb5_enctype enctype,
+ char **etype_s)
+{
+#ifdef HAVE_KRB5_ENCTYPE_TO_STRING_WITH_KRB5_CONTEXT_ARG
+ return krb5_enctype_to_string(context, enctype, etype_s); /* Heimdal */
+#elif defined(HAVE_KRB5_ENCTYPE_TO_STRING_WITH_SIZE_T_ARG)
+ char buf[256];
+ krb5_error_code ret = krb5_enctype_to_string(enctype, buf, 256); /* MIT */
+ if (ret) {
+ return ret;
+ }
+ *etype_s = SMB_STRDUP(buf);
+ if (!*etype_s) {
+ return ENOMEM;
+ }
+ return ret;
+#else
+#error UNKNOWN_KRB5_ENCTYPE_TO_STRING_FUNCTION
+#endif
+}
+
+ krb5_error_code smb_krb5_mk_error(krb5_context context,
+ krb5_error_code error_code,
+ const krb5_principal server,
+ krb5_data *reply)
+{
+#ifdef HAVE_SHORT_KRB5_MK_ERROR_INTERFACE /* MIT */
+ /*
+ * The MIT interface is *terrible*.
+ * We have to construct this ourselves...
+ */
+ krb5_error e;
+
+ memset(&e, 0, sizeof(e));
+ krb5_us_timeofday(context, &e.stime, &e.susec);
+ e.server = server;
+#if defined(krb5_err_base)
+ e.error = error_code - krb5_err_base;
+#elif defined(ERROR_TABLE_BASE_krb5)
+ e.error = error_code - ERROR_TABLE_BASE_krb5;
+#else
+ e.error = error_code; /* Almost certainly wrong, but what can we do... ? */
+#endif
+
+ return krb5_mk_error(context, &e, reply);
+#else /* Heimdal. */
+ return krb5_mk_error(context,
+ error_code,
+ NULL,
+ NULL, /* e_data */
+ NULL,
+ server,
+ NULL,
+ NULL,
+ reply);
+#endif
+}
+
+/**********************************************************************
+ * Open a krb5 keytab with flags, handles readonly or readwrite access and
+ * allows to process non-default keytab names.
+ * @param context krb5_context
+ * @param keytab_name_req string
+ * @param write_access BOOL if writable keytab is required
+ * @param krb5_keytab pointer to krb5_keytab (close with krb5_kt_close())
+ * @return krb5_error_code
+**********************************************************************/
+
+/* This MAX_NAME_LEN is a constant defined in krb5.h */
+#ifndef MAX_KEYTAB_NAME_LEN
+#define MAX_KEYTAB_NAME_LEN 1100
+#endif
+
+ krb5_error_code smb_krb5_open_keytab(krb5_context context,
+ const char *keytab_name_req,
+ BOOL write_access,
+ krb5_keytab *keytab)
+{
+ krb5_error_code ret = 0;
+ TALLOC_CTX *mem_ctx;
+ char keytab_string[MAX_KEYTAB_NAME_LEN];
+ BOOL found_valid_name = False;
+ const char *pragma = "FILE";
+ const char *tmp = NULL;
+
+ if (!write_access && !keytab_name_req) {
+ /* caller just wants to read the default keytab readonly, so be it */
+ return krb5_kt_default(context, keytab);
+ }
+
+ mem_ctx = talloc_init("smb_krb5_open_keytab");
+ if (!mem_ctx) {
+ return ENOMEM;
+ }
+
+#ifdef HAVE_WRFILE_KEYTAB
+ if (write_access) {
+ pragma = "WRFILE";
+ }
+#endif
+
+ if (keytab_name_req) {
+
+ if (strlen(keytab_name_req) > MAX_KEYTAB_NAME_LEN) {
+ ret = KRB5_CONFIG_NOTENUFSPACE;
+ goto out;
+ }
+
+ if ((strncmp(keytab_name_req, "WRFILE:/", 8) == 0) ||
+ (strncmp(keytab_name_req, "FILE:/", 6) == 0)) {
+ tmp = keytab_name_req;
+ goto resolve;
+ }
+
+ if (keytab_name_req[0] != '/') {
+ ret = KRB5_KT_BADNAME;
+ goto out;
+ }
+
+ tmp = talloc_asprintf(mem_ctx, "%s:%s", pragma, keytab_name_req);
+ if (!tmp) {
+ ret = ENOMEM;
+ goto out;
+ }
+
+ goto resolve;
+ }
+
+ /* we need to handle more complex keytab_strings, like:
+ * "ANY:FILE:/etc/krb5.keytab,krb4:/etc/srvtab" */
+
+ ret = krb5_kt_default_name(context, &keytab_string[0], MAX_KEYTAB_NAME_LEN - 2);
+ if (ret) {
+ goto out;
+ }
+
+ DEBUG(10,("smb_krb5_open_keytab: krb5_kt_default_name returned %s\n", keytab_string));
+
+ tmp = talloc_strdup(mem_ctx, keytab_string);
+ if (!tmp) {
+ ret = ENOMEM;
+ goto out;
+ }
+
+ if (strncmp(tmp, "ANY:", 4) == 0) {
+ tmp += 4;
+ }
+
+ memset(&keytab_string, '\0', sizeof(keytab_string));
+
+ while (next_token(&tmp, keytab_string, ",", sizeof(keytab_string))) {
+
+ if (strncmp(keytab_string, "WRFILE:", 7) == 0) {
+ found_valid_name = True;
+ tmp = keytab_string;
+ tmp += 7;
+ }
+
+ if (strncmp(keytab_string, "FILE:", 5) == 0) {
+ found_valid_name = True;
+ tmp = keytab_string;
+ tmp += 5;
+ }
+
+ if (found_valid_name) {
+
+ if (tmp[0] != '/') {
+ ret = KRB5_KT_BADNAME;
+ goto out;
+ }
+
+ tmp = talloc_asprintf(mem_ctx, "%s:%s", pragma, tmp);
+ if (!tmp) {
+ ret = ENOMEM;
+ goto out;
+ }
+ break;
+ }
+ }
+
+ if (!found_valid_name) {
+ ret = KRB5_KT_UNKNOWN_TYPE;
+ goto out;
+ }
+
+ resolve:
+ DEBUG(10,("smb_krb5_open_keytab: resolving: %s\n", tmp));
+ ret = krb5_kt_resolve(context, tmp, keytab);
+
+ out:
+ TALLOC_FREE(mem_ctx);
+ return ret;
+}
+
#else /* HAVE_KRB5 */
/* this saves a few linking headaches */
-int cli_krb5_get_ticket(const char *principal, time_t time_offset,
- DATA_BLOB *ticket, DATA_BLOB *session_key_krb5)
+ int cli_krb5_get_ticket(const char *principal, time_t time_offset,
+ DATA_BLOB *ticket, DATA_BLOB *session_key_krb5, uint32 extra_ap_opts,
+ const char *ccname, time_t *tgs_expire)
{
DEBUG(0,("NO KERBEROS SUPPORT\n"));
return 1;
git.samba.org / ira / wip.git / blobdiff