/*
* Copyright (c) 1999-2001, 2003, PADL Software Pty Ltd.
- * Copyright (c) 2004, Andrew Bartlett <abartlet@samba.org>.
+ * Copyright (c) 2004
-2009, Andrew Bartlett <abartlet@samba.org>.
* Copyright (c) 2004, Stefan Metzmacher <metze@samba.org>
* All rights reserved.
*
#include "includes.h"
#include "system/time.h"
-#include "dsdb/common/flags.h"
+#include "../libds/common/flags.h"
#include "lib/ldb/include/ldb.h"
#include "lib/ldb/include/ldb_errors.h"
#include "librpc/gen_ndr/netlogon.h"
+#include "libcli/security/security.h"
#include "auth/auth.h"
#include "auth/credentials/credentials.h"
#include "auth/auth_sam.h"
#include "kdc/kdc.h"
#include "../lib/crypto/md4.h"
-enum hdb_ldb_ent_type
-{ HDB_SAMBA4_ENT_TYPE_CLIENT, HDB_SAMBA4_ENT_TYPE_SERVER,
+enum hdb_samba4_ent_type
+{ HDB_SAMBA4_ENT_TYPE_CLIENT, HDB_SAMBA4_ENT_TYPE_SERVER,
HDB_SAMBA4_ENT_TYPE_KRBTGT, HDB_SAMBA4_ENT_TYPE_TRUST, HDB_SAMBA4_ENT_TYPE_ANY };
enum trust_direction {
UNKNOWN = 0,
- INBOUND = LSA_TRUST_DIRECTION_INBOUND,
+ INBOUND = LSA_TRUST_DIRECTION_INBOUND,
OUTBOUND = LSA_TRUST_DIRECTION_OUTBOUND
};
-static const char *realm_ref_attrs[] = {
- "nCName",
- "dnsRoot",
- NULL
-};
-
static const char *trust_attrs[] = {
"trustPartner",
"trustAuthIncoming",
return timegm(&tm);
}
-static HDBFlags uf2HDBFlags(krb5_context context, int userAccountControl, enum hdb_ldb_ent_type ent_type)
+static HDBFlags uf2HDBFlags(krb5_context context, int userAccountControl, enum hdb_samba4_ent_type ent_type)
{
HDBFlags flags = int2HDBFlags(0);
}
flags.invalid = 0;
}
-
+
if (userAccountControl & UF_INTERDOMAIN_TRUST_ACCOUNT) {
if (ent_type == HDB_SAMBA4_ENT_TYPE_CLIENT || ent_type == HDB_SAMBA4_ENT_TYPE_ANY) {
flags.client = 1;
flags.invalid = 1;
}
-/* UF_DONT_EXPIRE_PASSWD and UF_USE_DES_KEY_ONLY handled in LDB_message2entry() */
+/* UF_DONT_EXPIRE_PASSWD and UF_USE_DES_KEY_ONLY handled in hdb_samba4_message2entry() */
/*
if (userAccountControl & UF_MNS_LOGON_ACCOUNT) {
}
if (userAccountControl & UF_TRUSTED_FOR_DELEGATION) {
flags.ok_as_delegate = 1;
- }
+ }
if (!(userAccountControl & UF_NOT_DELEGATED)) {
flags.forwardable = 1;
flags.proxiable = 1;
return flags;
}
-static int hdb_ldb_destructor(struct hdb_ldb_private *private)
+static int hdb_samba4_destructor(struct hdb_samba4_private *p)
{
- hdb_entry_ex *entry_ex = private->entry_ex;
+ hdb_entry_ex *entry_ex = p->entry_ex;
free_hdb_entry(&entry_ex->entry);
return 0;
}
-static void hdb_ldb_free_entry(krb5_context context, hdb_entry_ex *entry_ex)
+static void hdb_samba4_free_entry(krb5_context context, hdb_entry_ex *entry_ex)
{
talloc_free(entry_ex->ctx);
}
-static krb5_error_code LDB_message2entry_keys(krb5_context context,
+static krb5_error_code hdb_samba4_message2entry_keys(krb5_context context,
struct smb_iconv_convenience *iconv_convenience,
TALLOC_CTX *mem_ctx,
struct ldb_message *msg,
ndr_err = ndr_pull_struct_blob(&blob, mem_ctx, iconv_convenience, &_pkb,
(ndr_pull_flags_fn_t)ndr_pull_package_PrimaryKerberosBlob);
if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
- krb5_set_error_string(context, "LDB_message2entry_keys: could not parse package_PrimaryKerberosBlob");
- krb5_warnx(context, "LDB_message2entry_keys: could not parse package_PrimaryKerberosBlob");
ret = EINVAL;
+ krb5_set_error_message(context, ret, "hdb_samba4_message2entry_keys: could not parse package_PrimaryKerberosBlob");
+ krb5_warnx(context, "hdb_samba4_message2entry_keys: could not parse package_PrimaryKerberosBlob");
goto out;
}
if (newer_keys && _pkb.version != 4) {
- krb5_set_error_string(context, "LDB_message2entry_keys: Primary:Kerberos-Newer-Keys not version 4");
- krb5_warnx(context, "LDB_message2entry_keys: Primary:Kerberos-Newer-Keys not version 4");
ret = EINVAL;
+ krb5_set_error_message(context, ret, "hdb_samba4_message2entry_keys: Primary:Kerberos-Newer-Keys not version 4");
+ krb5_warnx(context, "hdb_samba4_message2entry_keys: Primary:Kerberos-Newer-Keys not version 4");
goto out;
}
if (!newer_keys && _pkb.version != 3) {
- krb5_set_error_string(context, "LDB_message2entry_keys: could not parse Primary:Kerberos not version 3");
- krb5_warnx(context, "LDB_message2entry_keys: could not parse Primary:Kerberos not version 3");
ret = EINVAL;
+ krb5_set_error_message(context, ret, "hdb_samba4_message2entry_keys: could not parse Primary:Kerberos not version 3");
+ krb5_warnx(context, "hdb_samba4_message2entry_keys: could not parse Primary:Kerberos not version 3");
goto out;
}
key.salt = NULL; /* No salt for this enc type */
ret = krb5_keyblock_init(context,
- ENCTYPE_ARCFOUR_HMAC_MD5,
- hash->hash, sizeof(hash->hash),
+ ENCTYPE_ARCFOUR_HMAC,
+ hash->hash, sizeof(hash->hash),
&key.key);
if (ret) {
goto out;
pkb4->keys[i].value->data,
pkb4->keys[i].value->length,
&key.key);
+ if (ret == KRB5_PROG_ETYPE_NOSUPP) {
+ DEBUG(2,("Unsupported keytype ignored - type %u\n",
+ pkb4->keys[i].keytype));
+ ret = 0;
+ continue;
+ }
if (ret) {
if (key.salt) {
free_Salt(key.salt);
/*
* Construct an hdb_entry from a directory entry.
*/
-static krb5_error_code LDB_message2entry(krb5_context context, HDB *db,
+static krb5_error_code hdb_samba4_message2entry(krb5_context context, HDB *db,
+ struct loadparm_context *lp_ctx,
TALLOC_CTX *mem_ctx, krb5_const_principal principal,
- enum hdb_ldb_ent_type ent_type,
+ enum hdb_samba4_ent_type ent_type,
+ struct ldb_dn *realm_dn,
struct ldb_message *msg,
- struct ldb_message *realm_ref_msg,
hdb_entry_ex *entry_ex)
{
unsigned int userAccountControl;
int i;
krb5_error_code ret = 0;
krb5_boolean is_computer = FALSE;
- const char *dnsdomain = ldb_msg_find_attr_as_string(realm_ref_msg, "dnsRoot", NULL);
- char *realm = strupper_talloc(mem_ctx, dnsdomain);
- struct loadparm_context *lp_ctx = ldb_get_opaque((struct ldb_context *)db->hdb_db, "loadparm");
- struct ldb_dn *domain_dn = samdb_result_dn((struct ldb_context *)db->hdb_db,
- mem_ctx,
- realm_ref_msg,
- "nCName",
- ldb_dn_new(mem_ctx, (struct ldb_context *)db->hdb_db, NULL));
-
- struct hdb_ldb_private *private;
+ char *realm = strupper_talloc(mem_ctx, lp_realm(lp_ctx));
+
+ struct hdb_samba4_private *p;
NTTIME acct_expiry;
+ NTSTATUS status;
+ uint32_t rid;
struct ldb_message_element *objectclasses;
struct ldb_val computer_val;
+ const char *samAccountName = ldb_msg_find_attr_as_string(msg, "samAccountName", NULL);
computer_val.data = discard_const_p(uint8_t,"computer");
computer_val.length = strlen((const char *)computer_val.data);
-
+
+ if (!samAccountName) {
+ ret = ENOENT;
+ krb5_set_error_message(context, ret, "hdb_samba4_message2entry: no samAccountName present");
+ goto out;
+ }
+
objectclasses = ldb_msg_find_element(msg, "objectClass");
-
+
if (objectclasses && ldb_msg_find_val(objectclasses, &computer_val)) {
is_computer = TRUE;
}
memset(entry_ex, 0, sizeof(*entry_ex));
if (!realm) {
- krb5_set_error_string(context, "talloc_strdup: out of memory");
ret = ENOMEM;
+ krb5_set_error_message(context, ret, "talloc_strdup: out of memory");
goto out;
}
-
- private = talloc(mem_ctx, struct hdb_ldb_private);
- if (!private) {
+
+ p = talloc(mem_ctx, struct hdb_samba4_private);
+ if (!p) {
ret = ENOMEM;
goto out;
}
- private->entry_ex = entry_ex;
- private->iconv_convenience = lp_iconv_convenience(lp_ctx);
- private->netbios_name = lp_netbios_name(lp_ctx);
+ p->entry_ex = entry_ex;
+ p->iconv_convenience = lp_iconv_convenience(lp_ctx);
+ p->lp_ctx = lp_ctx;
+ p->realm_dn = talloc_reference(p, realm_dn);
+ if (!p->realm_dn) {
+ ret = ENOMEM;
+ goto out;
+ }
- talloc_set_destructor(private, hdb_ldb_destructor);
+ talloc_set_destructor(p, hdb_samba4_destructor);
- entry_ex->ctx = private;
- entry_ex->free_entry = hdb_ldb_free_entry;
+ entry_ex->ctx = p;
+ entry_ex->free_entry = hdb_samba4_free_entry;
userAccountControl = ldb_msg_find_attr_as_uint(msg, "userAccountControl", 0);
-
+
entry_ex->entry.principal = malloc(sizeof(*(entry_ex->entry.principal)));
if (ent_type == HDB_SAMBA4_ENT_TYPE_ANY && principal == NULL) {
- const char *samAccountName = ldb_msg_find_attr_as_string(msg, "samAccountName", NULL);
- if (!samAccountName) {
- krb5_set_error_string(context, "LDB_message2entry: no samAccountName present");
- ret = ENOENT;
- goto out;
- }
- samAccountName = ldb_msg_find_attr_as_string(msg, "samAccountName", NULL);
krb5_make_principal(context, &entry_ex->entry.principal, realm, samAccountName, NULL);
} else {
- char *strdup_realm;
ret = copy_Principal(principal, entry_ex->entry.principal);
if (ret) {
- krb5_clear_error_string(context);
+ krb5_clear_error_message(context);
goto out;
}
* the client-specified realm. This code attempts to
* replace the client principal's realm with the one
* we determine from our records */
-
+
/* this has to be with malloc() */
- strdup_realm = strdup(realm);
- if (!strdup_realm) {
- ret = ENOMEM;
- krb5_clear_error_string(context);
- goto out;
- }
- free(*krb5_princ_realm(context, entry_ex->entry.principal));
- krb5_princ_set_realm(context, entry_ex->entry.principal, &strdup_realm);
+ krb5_principal_set_realm(context, entry_ex->entry.principal, realm);
}
+ /* First try and figure out the flags based on the userAccountControl */
entry_ex->entry.flags = uf2HDBFlags(context, userAccountControl, ent_type);
- if (ent_type == HDB_SAMBA4_ENT_TYPE_KRBTGT) {
- entry_ex->entry.flags.invalid = 0;
- entry_ex->entry.flags.server = 1;
- entry_ex->entry.flags.forwardable = 1;
- entry_ex->entry.flags.ok_as_delegate = 1;
- }
+ /* Windows 2008 seems to enforce this (very sensible) rule by
+ * default - don't allow offline attacks on a user's password
+ * by asking for a ticket to them as a service (encrypted with
+ * their probably patheticly insecure password) */
- if (lp_parm_bool(lp_ctx, NULL, "kdc", "require spn for service", true)) {
+ if (entry_ex->entry.flags.server
+ && lp_parm_bool(lp_ctx, NULL, "kdc", "require spn for service", true)) {
if (!is_computer && !ldb_msg_find_attr_as_string(msg, "servicePrincipalName", NULL)) {
entry_ex->entry.flags.server = 0;
}
}
- /* use 'whenCreated' */
- entry_ex->entry.created_by.time = ldb_msg_find_krb5time_ldap_time(msg, "whenCreated", 0);
- /* use '???' */
- entry_ex->entry.created_by.principal = NULL;
+ {
+ /* These (created_by, modified_by) parts of the entry are not relevant for Samba4's use
+ * of the Heimdal KDC. They are stored in a the traditional
+ * DB for audit purposes, and still form part of the structure
+ * we must return */
- entry_ex->entry.modified_by = (Event *) malloc(sizeof(Event));
- if (entry_ex->entry.modified_by == NULL) {
- krb5_set_error_string(context, "malloc: out of memory");
- ret = ENOMEM;
- goto out;
+ /* use 'whenCreated' */
+ entry_ex->entry.created_by.time = ldb_msg_find_krb5time_ldap_time(msg, "whenCreated", 0);
+ /* use '???' */
+ entry_ex->entry.created_by.principal = NULL;
+
+ entry_ex->entry.modified_by = (Event *) malloc(sizeof(Event));
+ if (entry_ex->entry.modified_by == NULL) {
+ ret = ENOMEM;
+ krb5_set_error_message(context, ret, "malloc: out of memory");
+ goto out;
+ }
+
+ /* use 'whenChanged' */
+ entry_ex->entry.modified_by->time = ldb_msg_find_krb5time_ldap_time(msg, "whenChanged", 0);
+ /* use '???' */
+ entry_ex->entry.modified_by->principal = NULL;
}
- /* use 'whenChanged' */
- entry_ex->entry.modified_by->time = ldb_msg_find_krb5time_ldap_time(msg, "whenChanged", 0);
- /* use '???' */
- entry_ex->entry.modified_by->principal = NULL;
- entry_ex->entry.valid_start = NULL;
+ /* The lack of password controls etc applies to krbtgt by
+ * virtue of being that particular RID */
+ status = dom_sid_split_rid(NULL, samdb_result_dom_sid(mem_ctx, msg, "objectSid"), NULL, &rid);
+
+ if (!NT_STATUS_IS_OK(status)) {
+ ret = EINVAL;
+ goto out;
+ }
- acct_expiry = samdb_result_account_expires(msg);
- if (acct_expiry == 0x7FFFFFFFFFFFFFFFULL) {
+ if (rid == DOMAIN_RID_KRBTGT) {
entry_ex->entry.valid_end = NULL;
- } else {
- entry_ex->entry.valid_end = malloc(sizeof(*entry_ex->entry.valid_end));
- if (entry_ex->entry.valid_end == NULL) {
- ret = ENOMEM;
- goto out;
+ entry_ex->entry.pw_end = NULL;
+
+ entry_ex->entry.flags.invalid = 0;
+ entry_ex->entry.flags.server = 1;
+
+ /* Don't mark all requests for the krbtgt/realm as
+ * 'change password', as otherwise we could get into
+ * trouble, and not enforce the password expirty.
+ * Instead, only do it when request is for the kpasswd service */
+ if (ent_type == HDB_SAMBA4_ENT_TYPE_SERVER
+ && principal->name.name_string.len == 2
+ && (strcmp(principal->name.name_string.val[0], "kadmin") == 0)
+ && (strcmp(principal->name.name_string.val[1], "changepw") == 0)
+ && lp_is_my_domain_or_realm(lp_ctx, principal->realm)) {
+ entry_ex->entry.flags.change_pw = 1;
}
- *entry_ex->entry.valid_end = nt_time_to_unix(acct_expiry);
- }
+ entry_ex->entry.flags.client = 0;
+ entry_ex->entry.flags.forwardable = 1;
+ entry_ex->entry.flags.ok_as_delegate = 1;
+ } else if (entry_ex->entry.flags.server && ent_type == HDB_SAMBA4_ENT_TYPE_SERVER) {
+ /* The account/password expiry only applies when the account is used as a
+ * client (ie password login), not when used as a server */
+
+ /* Make very well sure we don't use this for a client,
+ * it could bypass the password restrictions */
+ entry_ex->entry.flags.client = 0;
- if (ent_type != HDB_SAMBA4_ENT_TYPE_KRBTGT) {
+ entry_ex->entry.valid_end = NULL;
+ entry_ex->entry.pw_end = NULL;
+
+ } else {
NTTIME must_change_time
- = samdb_result_force_password_change((struct ldb_context *)db->hdb_db, mem_ctx,
- domain_dn, msg);
+ = samdb_result_force_password_change((struct ldb_context *)db->hdb_db, mem_ctx,
+ realm_dn, msg);
if (must_change_time == 0x7FFFFFFFFFFFFFFFULL) {
entry_ex->entry.pw_end = NULL;
} else {
}
*entry_ex->entry.pw_end = nt_time_to_unix(must_change_time);
}
- } else {
- entry_ex->entry.pw_end = NULL;
+
+ acct_expiry = samdb_result_account_expires(msg);
+ if (acct_expiry == 0x7FFFFFFFFFFFFFFFULL) {
+ entry_ex->entry.valid_end = NULL;
+ } else {
+ entry_ex->entry.valid_end = malloc(sizeof(*entry_ex->entry.valid_end));
+ if (entry_ex->entry.valid_end == NULL) {
+ ret = ENOMEM;
+ goto out;
+ }
+ *entry_ex->entry.valid_end = nt_time_to_unix(acct_expiry);
+ }
}
-
+
+ entry_ex->entry.valid_start = NULL;
+
entry_ex->entry.max_life = NULL;
entry_ex->entry.max_renew = NULL;
entry_ex->entry.generation = NULL;
/* Get keys from the db */
- ret = LDB_message2entry_keys(context, private->iconv_convenience, private, msg, userAccountControl, entry_ex);
+ ret = hdb_samba4_message2entry_keys(context, p->iconv_convenience, p, msg, userAccountControl, entry_ex);
if (ret) {
/* Could be bougus data in the entry, or out of memory */
goto out;
entry_ex->entry.etypes = malloc(sizeof(*(entry_ex->entry.etypes)));
if (entry_ex->entry.etypes == NULL) {
- krb5_clear_error_string(context);
+ krb5_clear_error_message(context);
ret = ENOMEM;
goto out;
}
entry_ex->entry.etypes->len = entry_ex->entry.keys.len;
entry_ex->entry.etypes->val = calloc(entry_ex->entry.etypes->len, sizeof(int));
if (entry_ex->entry.etypes->val == NULL) {
- krb5_clear_error_string(context);
+ krb5_clear_error_message(context);
ret = ENOMEM;
goto out;
}
}
- private->msg = talloc_steal(private, msg);
- private->realm_ref_msg = talloc_steal(private, realm_ref_msg);
- private->samdb = (struct ldb_context *)db->hdb_db;
-
+ p->msg = talloc_steal(p, msg);
+ p->samdb = (struct ldb_context *)db->hdb_db;
+
out:
if (ret != 0) {
/* This doesn't free ent itself, that is for the eventual caller to do */
/*
* Construct an hdb_entry from a directory entry.
*/
-static krb5_error_code LDB_trust_message2entry(krb5_context context, HDB *db,
+static krb5_error_code hdb_samba4_trust_message2entry(krb5_context context, HDB *db,
struct loadparm_context *lp_ctx,
TALLOC_CTX *mem_ctx, krb5_const_principal principal,
enum trust_direction direction,
+ struct ldb_dn *realm_dn,
struct ldb_message *msg,
hdb_entry_ex *entry_ex)
{
-
+
const char *dnsdomain;
char *realm;
- char *strdup_realm;
DATA_BLOB password_utf16;
struct samr_Password password_hash;
const struct ldb_val *password_val;
struct trustAuthInOutBlob password_blob;
- struct hdb_ldb_private *private;
+ struct hdb_samba4_private *p;
enum ndr_err_code ndr_err;
int i, ret, trust_direction_flags;
- private = talloc(mem_ctx, struct hdb_ldb_private);
- if (!private) {
+ p = talloc(mem_ctx, struct hdb_samba4_private);
+ if (!p) {
ret = ENOMEM;
goto out;
}
- private->entry_ex = entry_ex;
- private->iconv_convenience = lp_iconv_convenience(lp_ctx);
- private->netbios_name = lp_netbios_name(lp_ctx);
+ p->entry_ex = entry_ex;
+ p->iconv_convenience = lp_iconv_convenience(lp_ctx);
+ p->lp_ctx = lp_ctx;
+ p->realm_dn = realm_dn;
- talloc_set_destructor(private, hdb_ldb_destructor);
+ talloc_set_destructor(p, hdb_samba4_destructor);
- entry_ex->ctx = private;
- entry_ex->free_entry = hdb_ldb_free_entry;
+ entry_ex->ctx = p;
+ entry_ex->free_entry = hdb_samba4_free_entry;
/* use 'whenCreated' */
entry_ex->entry.created_by.time = ldb_msg_find_krb5time_ldap_time(msg, "whenCreated", 0);
goto out;
}
- ndr_err = ndr_pull_struct_blob(password_val, mem_ctx, private->iconv_convenience, &password_blob,
+ ndr_err = ndr_pull_struct_blob(password_val, mem_ctx, p->iconv_convenience, &password_blob,
(ndr_pull_flags_fn_t)ndr_pull_trustAuthInOutBlob);
if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
ret = EINVAL;
ret = ENOMEM;
goto out;
}
-
+
ret = krb5_keyblock_init(context,
- ENCTYPE_ARCFOUR_HMAC_MD5,
- password_hash.hash, sizeof(password_hash.hash),
+ ENCTYPE_ARCFOUR_HMAC,
+ password_hash.hash, sizeof(password_hash.hash),
&key.key);
-
+
entry_ex->entry.keys.val[entry_ex->entry.keys.len] = key;
entry_ex->entry.keys.len++;
}
-
+
entry_ex->entry.principal = malloc(sizeof(*(entry_ex->entry.principal)));
ret = copy_Principal(principal, entry_ex->entry.principal);
if (ret) {
- krb5_clear_error_string(context);
+ krb5_clear_error_message(context);
goto out;
}
-
+
/* While we have copied the client principal, tests
* show that Win2k3 returns the 'corrected' realm, not
* the client-specified realm. This code attempts to
* replace the client principal's realm with the one
* we determine from our records */
-
- /* this has to be with malloc() */
- strdup_realm = strdup(realm);
- if (!strdup_realm) {
- ret = ENOMEM;
- krb5_clear_error_string(context);
- goto out;
- }
- free(*krb5_princ_realm(context, entry_ex->entry.principal));
- krb5_princ_set_realm(context, entry_ex->entry.principal, &strdup_realm);
-
+
+ krb5_principal_set_realm(context, entry_ex->entry.principal, realm);
entry_ex->entry.flags = int2HDBFlags(0);
entry_ex->entry.flags.immutable = 1;
entry_ex->entry.flags.invalid = 0;
entry_ex->entry.flags.require_preauth = 1;
entry_ex->entry.pw_end = NULL;
-
+
entry_ex->entry.max_life = NULL;
entry_ex->entry.max_renew = NULL;
entry_ex->entry.etypes = malloc(sizeof(*(entry_ex->entry.etypes)));
if (entry_ex->entry.etypes == NULL) {
- krb5_clear_error_string(context);
+ krb5_clear_error_message(context);
ret = ENOMEM;
goto out;
}
entry_ex->entry.etypes->len = entry_ex->entry.keys.len;
entry_ex->entry.etypes->val = calloc(entry_ex->entry.etypes->len, sizeof(int));
if (entry_ex->entry.etypes->val == NULL) {
- krb5_clear_error_string(context);
+ krb5_clear_error_message(context);
ret = ENOMEM;
goto out;
}
}
- private->msg = talloc_steal(private, msg);
- private->realm_ref_msg = NULL;
- private->samdb = (struct ldb_context *)db->hdb_db;
-
+ p->msg = talloc_steal(p, msg);
+ p->samdb = (struct ldb_context *)db->hdb_db;
+
out:
if (ret != 0) {
/* This doesn't free ent itself, that is for the eventual caller to do */
}
-static krb5_error_code LDB_lookup_principal(krb5_context context, struct ldb_context *ldb_ctx,
- TALLOC_CTX *mem_ctx,
- krb5_const_principal principal,
- enum hdb_ldb_ent_type ent_type,
- struct ldb_dn *realm_dn,
- struct ldb_message ***pmsg)
-{
- krb5_error_code ret;
- int lret;
- char *filter = NULL;
- const char * const *princ_attrs = user_attrs;
-
- char *short_princ;
- char *short_princ_talloc;
-
- struct ldb_result *res = NULL;
-
- ret = krb5_unparse_name_flags(context, principal, KRB5_PRINCIPAL_UNPARSE_NO_REALM, &short_princ);
-
- if (ret != 0) {
- krb5_set_error_string(context, "LDB_lookup_principal: could not parse principal");
- krb5_warnx(context, "LDB_lookup_principal: could not parse principal");
- return ret;
- }
-
- short_princ_talloc = talloc_strdup(mem_ctx, short_princ);
- free(short_princ);
- if (!short_princ_talloc) {
- krb5_set_error_string(context, "LDB_lookup_principal: talloc_strdup() failed!");
- return ENOMEM;
- }
-
- switch (ent_type) {
- case HDB_SAMBA4_ENT_TYPE_CLIENT:
- case HDB_SAMBA4_ENT_TYPE_TRUST:
- case HDB_SAMBA4_ENT_TYPE_ANY:
- /* Can't happen */
- return EINVAL;
- case HDB_SAMBA4_ENT_TYPE_KRBTGT:
- filter = talloc_asprintf(mem_ctx, "(&(objectClass=user)(samAccountName=%s))",
- KRB5_TGS_NAME);
- break;
- case HDB_SAMBA4_ENT_TYPE_SERVER:
- filter = talloc_asprintf(mem_ctx, "(&(objectClass=user)(samAccountName=%s))",
- short_princ_talloc);
- break;
- }
-
- if (!filter) {
- krb5_set_error_string(context, "talloc_asprintf: out of memory");
- return ENOMEM;
- }
-
- lret = ldb_search(ldb_ctx, mem_ctx, &res, realm_dn,
- LDB_SCOPE_SUBTREE, princ_attrs, "%s", filter);
- if (lret != LDB_SUCCESS) {
- DEBUG(3, ("Failed to search for %s: %s\n", filter, ldb_errstring(ldb_ctx)));
- return HDB_ERR_NOENTRY;
- } else if (res->count == 0 || res->count > 1) {
- DEBUG(3, ("Failed find a single entry for %s: got %d\n", filter, res->count));
- talloc_free(res);
- return HDB_ERR_NOENTRY;
- }
- talloc_steal(mem_ctx, res->msgs);
- *pmsg = res->msgs;
- talloc_free(res);
- return 0;
-}
-
-static krb5_error_code LDB_lookup_trust(krb5_context context, struct ldb_context *ldb_ctx,
+static krb5_error_code hdb_samba4_lookup_trust(krb5_context context, struct ldb_context *ldb_ctx,
TALLOC_CTX *mem_ctx,
const char *realm,
struct ldb_dn *realm_dn,
- struct ldb_message ***pmsg)
+ struct ldb_message **pmsg)
{
int lret;
+ krb5_error_code ret;
char *filter = NULL;
const char * const *attrs = trust_attrs;
filter = talloc_asprintf(mem_ctx, "(&(objectClass=trustedDomain)(|(flatname=%s)(trustPartner=%s)))", realm, realm);
if (!filter) {
- krb5_set_error_string(context, "talloc_asprintf: out of memory");
- return ENOMEM;
+ ret = ENOMEM;
+ krb5_set_error_message(context, ret, "talloc_asprintf: out of memory");
+ return ret;
}
lret = ldb_search(ldb_ctx, mem_ctx, &res,
return HDB_ERR_NOENTRY;
}
talloc_steal(mem_ctx, res->msgs);
- *pmsg = res->msgs;
+ *pmsg = res->msgs[0];
talloc_free(res);
return 0;
}
-static krb5_error_code LDB_lookup_realm(krb5_context context, struct ldb_context *ldb_ctx,
- TALLOC_CTX *mem_ctx,
- const char *realm,
- struct ldb_message ***pmsg)
-{
- int ret;
- struct ldb_result *cross_ref_res;
- struct ldb_dn *partitions_basedn = samdb_partitions_dn(ldb_ctx, mem_ctx);
-
- ret = ldb_search(ldb_ctx, mem_ctx, &cross_ref_res,
- partitions_basedn, LDB_SCOPE_SUBTREE, realm_ref_attrs,
- "(&(&(|(&(dnsRoot=%s)(nETBIOSName=*))(nETBIOSName=%s))(objectclass=crossRef))(ncName=*))",
- realm, realm);
-
- if (ret != LDB_SUCCESS) {
- DEBUG(3, ("Failed to search to lookup realm(%s): %s\n", realm, ldb_errstring(ldb_ctx)));
- talloc_free(cross_ref_res);
- return HDB_ERR_NOENTRY;
- } else if (cross_ref_res->count == 0 || cross_ref_res->count > 1) {
- DEBUG(3, ("Failed find a single entry for realm %s: got %d\n", realm, cross_ref_res->count));
- talloc_free(cross_ref_res);
- return HDB_ERR_NOENTRY;
- }
-
- if (pmsg) {
- *pmsg = cross_ref_res->msgs;
- talloc_steal(mem_ctx, cross_ref_res->msgs);
- }
- talloc_free(cross_ref_res);
-
- return 0;
-}
-
-
-static krb5_error_code LDB_open(krb5_context context, HDB *db, int flags, mode_t mode)
+static krb5_error_code hdb_samba4_open(krb5_context context, HDB *db, int flags, mode_t mode)
{
if (db->hdb_master_key_set) {
- krb5_warnx(context, "LDB_open: use of a master key incompatible with LDB\n");
- krb5_set_error_string(context, "LDB_open: use of a master key incompatible with LDB\n");
- return HDB_ERR_NOENTRY;
- }
+ krb5_error_code ret = HDB_ERR_NOENTRY;
+ krb5_warnx(context, "hdb_samba4_open: use of a master key incompatible with LDB\n");
+ krb5_set_error_message(context, ret, "hdb_samba4_open: use of a master key incompatible with LDB\n");
+ return ret;
+ }
return 0;
}
-static krb5_error_code LDB_close(krb5_context context, HDB *db)
+static krb5_error_code hdb_samba4_close(krb5_context context, HDB *db)
{
return 0;
}
-static krb5_error_code LDB_lock(krb5_context context, HDB *db, int operation)
+static krb5_error_code hdb_samba4_lock(krb5_context context, HDB *db, int operation)
{
return 0;
}
-static krb5_error_code LDB_unlock(krb5_context context, HDB *db)
+static krb5_error_code hdb_samba4_unlock(krb5_context context, HDB *db)
{
return 0;
}
-static krb5_error_code LDB_rename(krb5_context context, HDB *db, const char *new_name)
+static krb5_error_code hdb_samba4_rename(krb5_context context, HDB *db, const char *new_name)
{
return HDB_ERR_DB_INUSE;
}
-static krb5_error_code LDB_fetch_client(krb5_context context, HDB *db,
- TALLOC_CTX *mem_ctx,
- krb5_const_principal principal,
- unsigned flags,
- hdb_entry_ex *entry_ex) {
+static krb5_error_code hdb_samba4_lookup_client(krb5_context context, HDB *db,
+ struct loadparm_context *lp_ctx,
+ TALLOC_CTX *mem_ctx,
+ krb5_const_principal principal,
+ const char **attrs,
+ struct ldb_dn **realm_dn,
+ struct ldb_message **msg) {
NTSTATUS nt_status;
char *principal_string;
krb5_error_code ret;
- struct ldb_message **msg = NULL;
- struct ldb_message **realm_ref_msg = NULL;
ret = krb5_unparse_name(context, principal, &principal_string);
-
+
if (ret != 0) {
return ret;
}
-
+
nt_status = sam_get_results_principal((struct ldb_context *)db->hdb_db,
- mem_ctx, principal_string,
- &msg, &realm_ref_msg);
+ mem_ctx, principal_string, attrs,
+ realm_dn, msg);
free(principal_string);
if (NT_STATUS_EQUAL(nt_status, NT_STATUS_NO_SUCH_USER)) {
return HDB_ERR_NOENTRY;
} else if (!NT_STATUS_IS_OK(nt_status)) {
return EINVAL;
}
-
- ret = LDB_message2entry(context, db, mem_ctx,
- principal, HDB_SAMBA4_ENT_TYPE_CLIENT,
- msg[0], realm_ref_msg[0], entry_ex);
+
+ return ret;
+}
+
+static krb5_error_code hdb_samba4_fetch_client(krb5_context context, HDB *db,
+ struct loadparm_context *lp_ctx,
+ TALLOC_CTX *mem_ctx,
+ krb5_const_principal principal,
+ unsigned flags,
+ hdb_entry_ex *entry_ex) {
+ struct ldb_dn *realm_dn;
+ krb5_error_code ret;
+ struct ldb_message *msg = NULL;
+
+ ret = hdb_samba4_lookup_client(context, db, lp_ctx,
+ mem_ctx, principal, user_attrs,
+ &realm_dn, &msg);
+ if (ret != 0) {
+ return ret;
+ }
+
+ ret = hdb_samba4_message2entry(context, db, lp_ctx, mem_ctx,
+ principal, HDB_SAMBA4_ENT_TYPE_CLIENT,
+ realm_dn, msg, entry_ex);
return ret;
}
-static krb5_error_code LDB_fetch_krbtgt(krb5_context context, HDB *db,
- TALLOC_CTX *mem_ctx,
+static krb5_error_code hdb_samba4_fetch_krbtgt(krb5_context context, HDB *db,
+ struct loadparm_context *lp_ctx,
+ TALLOC_CTX *mem_ctx,
krb5_const_principal principal,
unsigned flags,
hdb_entry_ex *entry_ex)
{
krb5_error_code ret;
- struct ldb_message **msg = NULL;
- struct ldb_message **realm_ref_msg_1 = NULL;
- struct ldb_message **realm_ref_msg_2 = NULL;
- struct ldb_dn *realm_dn;
+ struct ldb_message *msg = NULL;
+ struct ldb_dn *realm_dn = ldb_get_default_basedn(db->hdb_db);
const char *realm;
krb5_principal alloc_principal = NULL;
/* krbtgt case. Either us or a trusted realm */
- if ((LDB_lookup_realm(context, (struct ldb_context *)db->hdb_db,
- mem_ctx, principal->realm, &realm_ref_msg_1) == 0)
- && (LDB_lookup_realm(context, (struct ldb_context *)db->hdb_db,
- mem_ctx, principal->name.name_string.val[1], &realm_ref_msg_2) == 0)
- && (ldb_dn_compare(realm_ref_msg_1[0]->dn, realm_ref_msg_1[0]->dn) == 0)) {
- /* us */
+ if (lp_is_my_domain_or_realm(lp_ctx, principal->realm)
+ && lp_is_my_domain_or_realm(lp_ctx, principal->name.name_string.val[1])) {
+ /* us */
/* Cludge, cludge cludge. If the realm part of krbtgt/realm,
* is in our db, then direct the caller at our primary
* krbtgt */
-
- const char *dnsdomain = ldb_msg_find_attr_as_string(realm_ref_msg_1[0], "dnsRoot", NULL);
- char *realm_fixed = strupper_talloc(mem_ctx, dnsdomain);
+
+ int lret;
+ char *realm_fixed;
+
+ lret = gendb_search_single_extended_dn(db->hdb_db, mem_ctx,
+ realm_dn, LDB_SCOPE_SUBTREE,
+ &msg, krbtgt_attrs,
+ "(&(objectClass=user)(samAccountName=krbtgt))");
+ if (lret == LDB_ERR_NO_SUCH_OBJECT) {
+ krb5_warnx(context, "hdb_samba4_fetch: could not find own KRBTGT in DB!");
+ krb5_set_error_message(context, HDB_ERR_NOENTRY, "hdb_samba4_fetch: could not find own KRBTGT in DB!");
+ return HDB_ERR_NOENTRY;
+ } else if (lret != LDB_SUCCESS) {
+ krb5_warnx(context, "hdb_samba4_fetch: could not find own KRBTGT in DB: %s", ldb_errstring(db->hdb_db));
+ krb5_set_error_message(context, HDB_ERR_NOENTRY, "hdb_samba4_fetch: could not find own KRBTGT in DB: %s", ldb_errstring(db->hdb_db));
+ return HDB_ERR_NOENTRY;
+ }
+
+ realm_fixed = strupper_talloc(mem_ctx, lp_realm(lp_ctx));
if (!realm_fixed) {
- krb5_set_error_string(context, "strupper_talloc: out of memory");
- return ENOMEM;
+ ret = ENOMEM;
+ krb5_set_error_message(context, ret, "strupper_talloc: out of memory");
+ return ret;
}
-
+
ret = krb5_copy_principal(context, principal, &alloc_principal);
if (ret) {
return ret;
}
-
+
free(alloc_principal->name.name_string.val[1]);
alloc_principal->name.name_string.val[1] = strdup(realm_fixed);
talloc_free(realm_fixed);
if (!alloc_principal->name.name_string.val[1]) {
- krb5_set_error_string(context, "LDB_fetch: strdup() failed!");
- return ENOMEM;
+ ret = ENOMEM;
+ krb5_set_error_message(context, ret, "hdb_samba4_fetch: strdup() failed!");
+ return ret;
}
principal = alloc_principal;
- realm_dn = samdb_result_dn((struct ldb_context *)db->hdb_db, mem_ctx, realm_ref_msg_1[0], "nCName", NULL);
-
- ret = LDB_lookup_principal(context, (struct ldb_context *)db->hdb_db,
- mem_ctx,
- principal, HDB_SAMBA4_ENT_TYPE_KRBTGT, realm_dn, &msg);
-
- if (ret != 0) {
- krb5_warnx(context, "LDB_fetch: could not find principal in DB");
- krb5_set_error_string(context, "LDB_fetch: could not find principal in DB");
- return ret;
- }
-
- ret = LDB_message2entry(context, db, mem_ctx,
- principal, HDB_SAMBA4_ENT_TYPE_KRBTGT,
- msg[0], realm_ref_msg_1[0], entry_ex);
+
+ ret = hdb_samba4_message2entry(context, db, lp_ctx, mem_ctx,
+ principal, HDB_SAMBA4_ENT_TYPE_KRBTGT,
+ realm_dn, msg, entry_ex);
if (ret != 0) {
- krb5_warnx(context, "LDB_fetch: self krbtgt message2entry failed");
+ krb5_warnx(context, "hdb_samba4_fetch: self krbtgt message2entry failed");
}
return ret;
} else {
enum trust_direction direction = UNKNOWN;
- struct loadparm_context *lp_ctx = talloc_get_type(ldb_get_opaque(db->hdb_db, "loadparm"), struct loadparm_context);
/* Either an inbound or outbound trust */
if (strcasecmp(lp_realm(lp_ctx), principal->realm) == 0) {
}
/* Trusted domains are under CN=system */
-
- ret = LDB_lookup_trust(context, (struct ldb_context *)db->hdb_db,
- mem_ctx,
+
+ ret = hdb_samba4_lookup_trust(context, (struct ldb_context *)db->hdb_db,
+ mem_ctx,
realm, realm_dn, &msg);
-
+
if (ret != 0) {
- krb5_warnx(context, "LDB_fetch: could not find principal in DB");
- krb5_set_error_string(context, "LDB_fetch: could not find principal in DB");
+ krb5_warnx(context, "hdb_samba4_fetch: could not find principal in DB");
+ krb5_set_error_message(context, ret, "hdb_samba4_fetch: could not find principal in DB");
return ret;
}
-
- ret = LDB_trust_message2entry(context, db, lp_ctx, mem_ctx,
- principal, direction,
- msg[0], entry_ex);
+
+ ret = hdb_samba4_trust_message2entry(context, db, lp_ctx, mem_ctx,
+ principal, direction,
+ realm_dn, msg, entry_ex);
if (ret != 0) {
- krb5_warnx(context, "LDB_fetch: trust_message2entry failed");
+ krb5_warnx(context, "hdb_samba4_fetch: trust_message2entry failed");
}
return ret;
-
+
/* we should lookup trusted domains */
return HDB_ERR_NOENTRY;
}
}
-static krb5_error_code LDB_fetch_server(krb5_context context, HDB *db,
- TALLOC_CTX *mem_ctx,
- krb5_const_principal principal,
- unsigned flags,
- hdb_entry_ex *entry_ex)
+static krb5_error_code hdb_samba4_lookup_server(krb5_context context, HDB *db,
+ struct loadparm_context *lp_ctx,
+ TALLOC_CTX *mem_ctx,
+ krb5_const_principal principal,
+ const char **attrs,
+ struct ldb_dn **realm_dn,
+ struct ldb_message **msg)
{
krb5_error_code ret;
const char *realm;
- struct ldb_message **msg = NULL;
- struct ldb_message **realm_ref_msg = NULL;
- struct ldb_dn *partitions_basedn = samdb_partitions_dn(db->hdb_db, mem_ctx);
if (principal->name.name_string.len >= 2) {
/* 'normal server' case */
int ldb_ret;
NTSTATUS nt_status;
- struct ldb_dn *user_dn, *domain_dn;
+ struct ldb_dn *user_dn;
char *principal_string;
-
- ret = krb5_unparse_name_flags(context, principal,
- KRB5_PRINCIPAL_UNPARSE_NO_REALM,
+
+ ret = krb5_unparse_name_flags(context, principal,
+ KRB5_PRINCIPAL_UNPARSE_NO_REALM,
&principal_string);
if (ret != 0) {
return ret;
}
-
+
/* At this point we may find the host is known to be
* in a different realm, so we should generate a
* referral instead */
nt_status = crack_service_principal_name((struct ldb_context *)db->hdb_db,
- mem_ctx, principal_string,
- &user_dn, &domain_dn);
+ mem_ctx, principal_string,
+ &user_dn, realm_dn);
free(principal_string);
-
+
if (!NT_STATUS_IS_OK(nt_status)) {
return HDB_ERR_NOENTRY;
}
-
- ldb_ret = gendb_search_dn((struct ldb_context *)db->hdb_db,
- mem_ctx, user_dn, &msg, user_attrs);
-
- if (ldb_ret != 1) {
- return HDB_ERR_NOENTRY;
- }
-
- ldb_ret = gendb_search((struct ldb_context *)db->hdb_db,
- mem_ctx, partitions_basedn, &realm_ref_msg, realm_ref_attrs,
- "ncName=%s", ldb_dn_get_linearized(domain_dn));
-
- if (ldb_ret != 1) {
+
+ ldb_ret = gendb_search_single_extended_dn((struct ldb_context *)db->hdb_db,
+ mem_ctx,
+ user_dn, LDB_SCOPE_BASE,
+ msg, attrs,
+ "(objectClass=*)");
+ if (ldb_ret != LDB_SUCCESS) {
return HDB_ERR_NOENTRY;
}
-
+
} else {
- struct ldb_dn *realm_dn;
+ int lret;
+ char *filter = NULL;
+ char *short_princ;
/* server as client principal case, but we must not lookup userPrincipalNames */
-
+ *realm_dn = ldb_get_default_basedn(db->hdb_db);
realm = krb5_principal_get_realm(context, principal);
-
- ret = LDB_lookup_realm(context, (struct ldb_context *)db->hdb_db,
- mem_ctx, realm, &realm_ref_msg);
+
+ /* TODO: Check if it is our realm, otherwise give referall */
+
+ ret = krb5_unparse_name_flags(context, principal, KRB5_PRINCIPAL_UNPARSE_NO_REALM, &short_princ);
+
if (ret != 0) {
+ krb5_set_error_message(context, ret, "hdb_samba4_lookup_principal: could not parse principal");
+ krb5_warnx(context, "hdb_samba4_lookup_principal: could not parse principal");
+ return ret;
+ }
+
+ lret = gendb_search_single_extended_dn(db->hdb_db, mem_ctx,
+ *realm_dn, LDB_SCOPE_SUBTREE,
+ msg, attrs, "(&(objectClass=user)(samAccountName=%s))",
+ ldb_binary_encode_string(mem_ctx, short_princ));
+ free(short_princ);
+ if (lret == LDB_ERR_NO_SUCH_OBJECT) {
+ DEBUG(3, ("Failed find a entry for %s\n", filter));
return HDB_ERR_NOENTRY;
}
-
- realm_dn = samdb_result_dn((struct ldb_context *)db->hdb_db, mem_ctx, realm_ref_msg[0], "nCName", NULL);
-
- ret = LDB_lookup_principal(context, (struct ldb_context *)db->hdb_db,
- mem_ctx,
- principal, HDB_SAMBA4_ENT_TYPE_SERVER, realm_dn, &msg);
-
- if (ret != 0) {
- return ret;
+ if (lret != LDB_SUCCESS) {
+ DEBUG(3, ("Failed single search for for %s - %s\n",
+ filter, ldb_errstring(db->hdb_db)));
+ return HDB_ERR_NOENTRY;
}
}
- ret = LDB_message2entry(context, db, mem_ctx,
+ return 0;
+}
+
+static krb5_error_code hdb_samba4_fetch_server(krb5_context context, HDB *db,
+ struct loadparm_context *lp_ctx,
+ TALLOC_CTX *mem_ctx,
+ krb5_const_principal principal,
+ unsigned flags,
+ hdb_entry_ex *entry_ex)
+{
+ krb5_error_code ret;
+ struct ldb_dn *realm_dn;
+ struct ldb_message *msg;
+
+ ret = hdb_samba4_lookup_server(context, db, lp_ctx, mem_ctx, principal,
+ server_attrs, &realm_dn, &msg);
+ if (ret != 0) {
+ return ret;
+ }
+
+ ret = hdb_samba4_message2entry(context, db, lp_ctx, mem_ctx,
principal, HDB_SAMBA4_ENT_TYPE_SERVER,
- msg[0], realm_ref_msg[0], entry_ex);
+ realm_dn, msg, entry_ex);
if (ret != 0) {
- krb5_warnx(context, "LDB_fetch: message2entry failed");
+ krb5_warnx(context, "hdb_samba4_fetch: message2entry failed");
}
return ret;
}
-
-static krb5_error_code LDB_fetch(krb5_context context, HDB *db,
+
+static krb5_error_code hdb_samba4_fetch(krb5_context context, HDB *db,
krb5_const_principal principal,
unsigned flags,
hdb_entry_ex *entry_ex)
{
krb5_error_code ret = HDB_ERR_NOENTRY;
-
- TALLOC_CTX *mem_ctx = talloc_named(db, 0, "LDB_fetch context");
+ TALLOC_CTX *mem_ctx = talloc_named(db, 0, "hdb_samba4_fetch context");
+ struct loadparm_context *lp_ctx = talloc_get_type(ldb_get_opaque(db->hdb_db, "loadparm"), struct loadparm_context);
if (!mem_ctx) {
- krb5_set_error_string(context, "LDB_fetch: talloc_named() failed!");
- return ENOMEM;
+ ret = ENOMEM;
+ krb5_set_error_message(context, ret, "hdb_samba4_fetch: talloc_named() failed!");
+ return ret;
}
if (flags & HDB_F_GET_CLIENT) {
- ret = LDB_fetch_client(context, db, mem_ctx, principal, flags, entry_ex);
+ ret = hdb_samba4_fetch_client(context, db, lp_ctx, mem_ctx, principal, flags, entry_ex);
if (ret != HDB_ERR_NOENTRY) goto done;
}
if (flags & HDB_F_GET_SERVER) {
/* krbtgt fits into this situation for trusted realms, and for resolving different versions of our own realm name */
- ret = LDB_fetch_krbtgt(context, db, mem_ctx, principal, flags, entry_ex);
+ ret = hdb_samba4_fetch_krbtgt(context, db, lp_ctx, mem_ctx, principal, flags, entry_ex);
if (ret != HDB_ERR_NOENTRY) goto done;
/* We return 'no entry' if it does not start with krbtgt/, so move to the common case quickly */
- ret = LDB_fetch_server(context, db, mem_ctx, principal, flags, entry_ex);
+ ret = hdb_samba4_fetch_server(context, db, lp_ctx, mem_ctx, principal, flags, entry_ex);
if (ret != HDB_ERR_NOENTRY) goto done;
}
if (flags & HDB_F_GET_KRBTGT) {
- ret = LDB_fetch_krbtgt(context, db, mem_ctx, principal, flags, entry_ex);
+ ret = hdb_samba4_fetch_krbtgt(context, db, lp_ctx, mem_ctx, principal, flags, entry_ex);
if (ret != HDB_ERR_NOENTRY) goto done;
}
return ret;
}
-static krb5_error_code LDB_store(krb5_context context, HDB *db, unsigned flags, hdb_entry_ex *entry)
+static krb5_error_code hdb_samba4_store(krb5_context context, HDB *db, unsigned flags, hdb_entry_ex *entry)
{
return HDB_ERR_DB_INUSE;
}
-static krb5_error_code LDB_remove(krb5_context context, HDB *db, krb5_const_principal principal)
+static krb5_error_code hdb_samba4_remove(krb5_context context, HDB *db, krb5_const_principal principal)
{
return HDB_ERR_DB_INUSE;
}
-struct hdb_ldb_seq {
+struct hdb_samba4_seq {
struct ldb_context *ctx;
+ struct loadparm_context *lp_ctx;
int index;
int count;
struct ldb_message **msgs;
- struct ldb_message **realm_ref_msgs;
+ struct ldb_dn *realm_dn;
};
-static krb5_error_code LDB_seq(krb5_context context, HDB *db, unsigned flags, hdb_entry_ex *entry)
+static krb5_error_code hdb_samba4_seq(krb5_context context, HDB *db, unsigned flags, hdb_entry_ex *entry)
{
krb5_error_code ret;
- struct hdb_ldb_seq *priv = (struct hdb_ldb_seq *)db->hdb_dbc;
+ struct hdb_samba4_seq *priv = (struct hdb_samba4_seq *)db->hdb_dbc;
TALLOC_CTX *mem_ctx;
hdb_entry_ex entry_ex;
memset(&entry_ex, '\0', sizeof(entry_ex));
return HDB_ERR_NOENTRY;
}
- mem_ctx = talloc_named(priv, 0, "LDB_seq context");
+ mem_ctx = talloc_named(priv, 0, "hdb_samba4_seq context");
if (!mem_ctx) {
- krb5_set_error_string(context, "LDB_seq: talloc_named() failed!");
- return ENOMEM;
+ ret = ENOMEM;
+ krb5_set_error_message(context, ret, "hdb_samba4_seq: talloc_named() failed!");
+ return ret;
}
if (priv->index < priv->count) {
- ret = LDB_message2entry(context, db, mem_ctx,
- NULL, HDB_SAMBA4_ENT_TYPE_ANY,
- priv->msgs[priv->index++],
- priv->realm_ref_msgs[0], entry);
+ ret = hdb_samba4_message2entry(context, db, priv->lp_ctx,
+ mem_ctx,
+ NULL, HDB_SAMBA4_ENT_TYPE_ANY,
+ priv->realm_dn, priv->msgs[priv->index++], entry);
} else {
ret = HDB_ERR_NOENTRY;
}
if (ret != 0) {
- talloc_free(priv);
db->hdb_dbc = NULL;
} else {
talloc_free(mem_ctx);
return ret;
}
-static krb5_error_code LDB_firstkey(krb5_context context, HDB *db, unsigned flags,
+static krb5_error_code hdb_samba4_firstkey(krb5_context context, HDB *db, unsigned flags,
hdb_entry_ex *entry)
{
struct ldb_context *ldb_ctx = (struct ldb_context *)db->hdb_db;
- struct hdb_ldb_seq *priv = (struct hdb_ldb_seq *)db->hdb_dbc;
+ struct loadparm_context *lp_ctx = talloc_get_type(ldb_get_opaque(ldb_ctx, "loadparm"),
+ struct loadparm_context);
+ struct hdb_samba4_seq *priv = (struct hdb_samba4_seq *)db->hdb_dbc;
char *realm;
- struct ldb_dn *realm_dn = NULL;
struct ldb_result *res = NULL;
- struct ldb_message **realm_ref_msgs = NULL;
krb5_error_code ret;
TALLOC_CTX *mem_ctx;
int lret;
db->hdb_dbc = NULL;
}
- priv = (struct hdb_ldb_seq *) talloc(db, struct hdb_ldb_seq);
+ priv = (struct hdb_samba4_seq *) talloc(db, struct hdb_samba4_seq);
if (!priv) {
- krb5_set_error_string(context, "talloc: out of memory");
- return ENOMEM;
+ ret = ENOMEM;
+ krb5_set_error_message(context, ret, "talloc: out of memory");
+ return ret;
}
priv->ctx = ldb_ctx;
+ priv->lp_ctx = lp_ctx;
priv->index = 0;
priv->msgs = NULL;
- priv->realm_ref_msgs = NULL;
+ priv->realm_dn = ldb_get_default_basedn(ldb_ctx);
priv->count = 0;
- mem_ctx = talloc_named(priv, 0, "LDB_firstkey context");
+ mem_ctx = talloc_named(priv, 0, "hdb_samba4_firstkey context");
if (!mem_ctx) {
- krb5_set_error_string(context, "LDB_firstkey: talloc_named() failed!");
- return ENOMEM;
+ ret = ENOMEM;
+ krb5_set_error_message(context, ret, "hdb_samba4_firstkey: talloc_named() failed!");
+ return ret;
}
ret = krb5_get_default_realm(context, &realm);
talloc_free(priv);
return ret;
}
-
- ret = LDB_lookup_realm(context, (struct ldb_context *)db->hdb_db,
- mem_ctx, realm, &realm_ref_msgs);
-
- free(realm);
-
- if (ret != 0) {
- talloc_free(priv);
- krb5_warnx(context, "LDB_firstkey: could not find realm\n");
- return HDB_ERR_NOENTRY;
- }
-
- realm_dn = samdb_result_dn((struct ldb_context *)db->hdb_db, mem_ctx, realm_ref_msgs[0], "nCName", NULL);
-
- priv->realm_ref_msgs = talloc_steal(priv, realm_ref_msgs);
lret = ldb_search(ldb_ctx, priv, &res,
- realm_dn, LDB_SCOPE_SUBTREE, user_attrs,
+ priv->realm_dn, LDB_SCOPE_SUBTREE, user_attrs,
"(objectClass=user)");
if (lret != LDB_SUCCESS) {
db->hdb_dbc = priv;
- ret = LDB_seq(context, db, flags, entry);
+ ret = hdb_samba4_seq(context, db, flags, entry);
if (ret != 0) {
talloc_free(priv);
return ret;
}
-static krb5_error_code LDB_nextkey(krb5_context context, HDB *db, unsigned flags,
+static krb5_error_code hdb_samba4_nextkey(krb5_context context, HDB *db, unsigned flags,
hdb_entry_ex *entry)
{
- return LDB_seq(context, db, flags, entry);
+ return hdb_samba4_seq(context, db, flags, entry);
}
-static krb5_error_code LDB_destroy(krb5_context context, HDB *db)
+static krb5_error_code hdb_samba4_destroy(krb5_context context, HDB *db)
{
talloc_free(db);
return 0;
}
-/* This interface is to be called by the KDC, which is expecting Samba
+
+/* Check if a given entry may delegate to this target principal
+ *
+ * This is currently a very nasty hack - allowing only delegation to itself.
+ */
+krb5_error_code hdb_samba4_check_constrained_delegation(krb5_context context, HDB *db,
+ hdb_entry_ex *entry,
+ krb5_const_principal target_principal)
+{
+ struct ldb_context *ldb_ctx = (struct ldb_context *)db->hdb_db;
+ struct loadparm_context *lp_ctx = talloc_get_type(ldb_get_opaque(ldb_ctx, "loadparm"),
+ struct loadparm_context);
+ krb5_error_code ret;
+ krb5_principal enterprise_prinicpal = NULL;
+ struct ldb_dn *realm_dn;
+ struct ldb_message *msg;
+ struct dom_sid *orig_sid;
+ struct dom_sid *target_sid;
+ struct hdb_samba4_private *p = talloc_get_type(entry->ctx, struct hdb_samba4_private);
+ const char *delegation_check_attrs[] = {
+ "objectSid", NULL
+ };
+
+ TALLOC_CTX *mem_ctx = talloc_named(db, 0, "hdb_samba4_check_constrained_delegation");
+
+ if (!mem_ctx) {
+ ret = ENOMEM;
+ krb5_set_error_message(context, ret, "hdb_samba4_fetch: talloc_named() failed!");
+ return ret;
+ }
+
+ if (target_principal->name.name_type == KRB5_NT_ENTERPRISE_PRINCIPAL) {
+ /* Need to reparse the enterprise principal to find the real target */
+ if (target_principal->name.name_string.len != 1) {
+ ret = KRB5_PARSE_MALFORMED;
+ krb5_set_error_message(context, ret, "hdb_samba4_check_constrained_delegation: request for delegation to enterprise principal with wrong (%d) number of components",
+ target_principal->name.name_string.len);
+ talloc_free(mem_ctx);
+ return ret;
+ }
+ ret = krb5_parse_name(context, target_principal->name.name_string.val[0],
+ &enterprise_prinicpal);
+ if (ret) {
+ talloc_free(mem_ctx);
+ return ret;
+ }
+ target_principal = enterprise_prinicpal;
+ }
+
+ ret = hdb_samba4_lookup_server(context, db, lp_ctx, mem_ctx, target_principal,
+ delegation_check_attrs, &realm_dn, &msg);
+
+ krb5_free_principal(context, enterprise_prinicpal);
+
+ if (ret != 0) {
+ talloc_free(mem_ctx);
+ return ret;
+ }
+
+ orig_sid = samdb_result_dom_sid(mem_ctx, p->msg, "objectSid");
+ target_sid = samdb_result_dom_sid(mem_ctx, msg, "objectSid");
+
+ /* Allow delegation to the same principal, even if by a different
+ * name. The easy and safe way to prove this is by SID
+ * comparison */
+ if (!(orig_sid && target_sid && dom_sid_equal(orig_sid, target_sid))) {
+ talloc_free(mem_ctx);
+ return KRB5KDC_ERR_BADOPTION;
+ }
+
+ talloc_free(mem_ctx);
+ return ret;
+}
+
+/* Certificates printed by a the Certificate Authority might have a
+ * slightly different form of the user principal name to that in the
+ * database. Allow a mismatch where they both refer to the same
+ * SID */
+
+krb5_error_code hdb_samba4_check_pkinit_ms_upn_match(krb5_context context, HDB *db,
+ hdb_entry_ex *entry,
+ krb5_const_principal certificate_principal)
+{
+ struct ldb_context *ldb_ctx = (struct ldb_context *)db->hdb_db;
+ struct loadparm_context *lp_ctx = talloc_get_type(ldb_get_opaque(ldb_ctx, "loadparm"),
+ struct loadparm_context);
+ krb5_error_code ret;
+ struct ldb_dn *realm_dn;
+ struct ldb_message *msg;
+ struct dom_sid *orig_sid;
+ struct dom_sid *target_sid;
+ struct hdb_samba4_private *p = talloc_get_type(entry->ctx, struct hdb_samba4_private);
+ const char *ms_upn_check_attrs[] = {
+ "objectSid", NULL
+ };
+
+ TALLOC_CTX *mem_ctx = talloc_named(db, 0, "hdb_samba4_check_constrained_delegation");
+
+ if (!mem_ctx) {
+ ret = ENOMEM;
+ krb5_set_error_message(context, ret, "hdb_samba4_fetch: talloc_named() failed!");
+ return ret;
+ }
+
+ ret = hdb_samba4_lookup_client(context, db, lp_ctx,
+ mem_ctx, certificate_principal,
+ ms_upn_check_attrs, &realm_dn, &msg);
+
+ if (ret != 0) {
+ talloc_free(mem_ctx);
+ return ret;
+ }
+
+ orig_sid = samdb_result_dom_sid(mem_ctx, p->msg, "objectSid");
+ target_sid = samdb_result_dom_sid(mem_ctx, msg, "objectSid");
+
+ /* Consider these to be the same principal, even if by a different
+ * name. The easy and safe way to prove this is by SID
+ * comparison */
+ if (!(orig_sid && target_sid && dom_sid_equal(orig_sid, target_sid))) {
+ talloc_free(mem_ctx);
+ return KRB5_KDC_ERR_CLIENT_NAME_MISMATCH;
+ }
+
+ talloc_free(mem_ctx);
+ return ret;
+}
+
+/* This interface is to be called by the KDC and libnet_keytab_dump, which is expecting Samba
* calling conventions. It is also called by a wrapper
- * (hdb_ldb_create) from the kpasswdd -> krb5 -> keytab_hdb -> hdb
+ * (hdb_samba4_create) from the kpasswdd -> krb5 -> keytab_hdb -> hdb
* code */
-NTSTATUS kdc_hdb_samba4_create(TALLOC_CTX *mem_ctx,
- struct event_context *ev_ctx,
- struct loadparm_context *lp_ctx,
- krb5_context context, struct HDB **db, const char *arg)
+NTSTATUS hdb_samba4_create_kdc(TALLOC_CTX *mem_ctx,
+ struct tevent_context *ev_ctx,
+ struct loadparm_context *lp_ctx,
+ krb5_context context, struct HDB **db)
{
- NTSTATUS nt_status;
struct auth_session_info *session_info;
+ NTSTATUS nt_status;
+
*db = talloc(mem_ctx, HDB);
if (!*db) {
- krb5_set_error_string(context, "malloc: out of memory");
+ krb5_set_error_message(context, ENOMEM, "malloc: out of memory");
return NT_STATUS_NO_MEMORY;
}
(*db)->hdb_master_key_set = 0;
(*db)->hdb_db = NULL;
-
+ (*db)->hdb_capability_flags = 0;
+
+#if 1
+ /* we would prefer to use system_session(), as that would
+ * allow us to share the samdb backend context with other parts of the
+ * system. For now we can't as we need to override the
+ * credentials to set CRED_DONT_USE_KERBEROS, which would
+ * break other users of the system_session */
+ DEBUG(0,("FIXME: Using new system session for hdb\n"));
nt_status = auth_system_session_info(*db, lp_ctx, &session_info);
if (!NT_STATUS_IS_OK(nt_status)) {
- return nt_status;
+ return nt_status;
}
-
+#else
+ session_info = system_session(lp_ctx);
+ if (session_info == NULL) {
+ return NT_STATUS_INTERNAL_ERROR;
+ }
+#endif
+
/* The idea here is very simple. Using Kerberos to
* authenticate the KDC to the LDAP server is higly likely to
* be circular.
*
* In future we may set this up to use EXERNAL and SSL
- * certificates, for now it will almost certainly be NTLMSSP
+ * certificates, for now it will almost certainly be NTLMSSP_SET_USERNAME
*/
-
- cli_credentials_set_kerberos_state(session_info->credentials,
+
+ cli_credentials_set_kerberos_state(session_info->credentials,
CRED_DONT_USE_KERBEROS);
/* Setup the link to LDB */
(*db)->hdb_db = samdb_connect(*db, ev_ctx, lp_ctx, session_info);
if ((*db)->hdb_db == NULL) {
- DEBUG(1, ("hdb_ldb_create: Cannot open samdb for KDC backend!"));
+ DEBUG(1, ("hdb_samba4_create: Cannot open samdb for KDC backend!"));
return NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
}
(*db)->hdb_dbc = NULL;
- (*db)->hdb_open = LDB_open;
- (*db)->hdb_close = LDB_close;
- (*db)->hdb_fetch = LDB_fetch;
- (*db)->hdb_store = LDB_store;
- (*db)->hdb_remove = LDB_remove;
- (*db)->hdb_firstkey = LDB_firstkey;
- (*db)->hdb_nextkey = LDB_nextkey;
- (*db)->hdb_lock = LDB_lock;
- (*db)->hdb_unlock = LDB_unlock;
- (*db)->hdb_rename = LDB_rename;
+ (*db)->hdb_open = hdb_samba4_open;
+ (*db)->hdb_close = hdb_samba4_close;
+ (*db)->hdb_fetch = hdb_samba4_fetch;
+ (*db)->hdb_store = hdb_samba4_store;
+ (*db)->hdb_remove = hdb_samba4_remove;
+ (*db)->hdb_firstkey = hdb_samba4_firstkey;
+ (*db)->hdb_nextkey = hdb_samba4_nextkey;
+ (*db)->hdb_lock = hdb_samba4_lock;
+ (*db)->hdb_unlock = hdb_samba4_unlock;
+ (*db)->hdb_rename = hdb_samba4_rename;
/* we don't implement these, as we are not a lockable database */
(*db)->hdb__get = NULL;
(*db)->hdb__put = NULL;
/* kadmin should not be used for deletes - use other tools instead */
(*db)->hdb__del = NULL;
- (*db)->hdb_destroy = LDB_destroy;
+ (*db)->hdb_destroy = hdb_samba4_destroy;
+
+ (*db)->hdb_auth_status = NULL;
+ (*db)->hdb_check_constrained_delegation = hdb_samba4_check_constrained_delegation;
+ (*db)->hdb_check_pkinit_ms_upn_match = hdb_samba4_check_pkinit_ms_upn_match;
return NT_STATUS_OK;
}
-krb5_error_code hdb_samba4_create(krb5_context context, struct HDB **db, const char *arg)
+static krb5_error_code hdb_samba4_create(krb5_context context, struct HDB **db, const char *arg)
{
NTSTATUS nt_status;
+ void *ptr;
+ struct hdb_samba4_context *hdb_samba4_context;
+
+ if (sscanf(arg, "&%p", &ptr) != 1) {
+ return EINVAL;
+ }
+ hdb_samba4_context = talloc_get_type_abort(ptr, struct hdb_samba4_context);
/* The global kdc_mem_ctx and kdc_lp_ctx, Disgusting, ugly hack, but it means one less private hook */
- nt_status = kdc_hdb_samba4_create(kdc_mem_ctx, event_context_find(kdc_mem_ctx), kdc_lp_ctx,
- context, db, arg);
+ nt_status = hdb_samba4_create_kdc(hdb_samba4_context, hdb_samba4_context->ev_ctx, hdb_samba4_context->lp_ctx,
+ context, db);
if (NT_STATUS_IS_OK(nt_status)) {
return 0;
}
return EINVAL;
}
+
+/* Only used in the hdb-backed keytab code
+ * for a keytab of 'samba4&<address>', to find
+ * kpasswd's key in the main DB, and to
+ * copy all the keys into a file (libnet_keytab_export)
+ *
+ * The <address> is the string form of a pointer to a talloced struct hdb_samba_context
+ */
+struct hdb_method hdb_samba4 = {
+ .interface_version = HDB_INTERFACE_VERSION,
+ .prefix = "samba4",
+ .create = hdb_samba4_create
+};
git.samba.org / ira / wip.git / blobdiff