static krb5_error_code
LDAP_fetch(krb5_context context, HDB * db, unsigned flags,
hdb_entry * entry)
{
LDAPMessage *msg, *e;
krb5_error_code ret;
ret = LDAP_principal2message(context, db, entry->principal, &msg);
if (ret)
return ret;
e = ldap_first_entry(HDB2LDAP(db), msg);
if (e == NULL) {
ret = HDB_ERR_NOENTRY;
goto out;
}
ret = LDAP_message2entry(context, db, e, entry);
if (ret == 0) {
if (db->hdb_master_key_set && (flags & HDB_F_DECRYPT)) {
ret = hdb_unseal_keys(context, db, entry);
if (ret)
hdb_free_entry(context,entry);
}
}
out:
ldap_msgfree(msg);
return ret;
}
static krb5_error_code
LDAP_entry2mods(krb5_context context, HDB * db, hdb_entry_ex * ent,
LDAPMessage * msg, LDAPMod *** pmods)
{
krb5_error_code ret;
krb5_boolean is_new_entry;
char *tmp = NULL;
LDAPMod **mods = NULL;
hdb_entry_ex orig;
unsigned long oflags, nflags;
int i;
krb5_boolean is_samba_account = FALSE;
krb5_boolean is_account = FALSE;
krb5_boolean is_heimdal_entry = FALSE;
krb5_boolean is_heimdal_principal = FALSE;
struct berval **vals;
*pmods = NULL;
if (msg != NULL) {
ret = LDAP_message2entry(context, db, msg, 0, &orig);
if (ret)
goto out;
is_new_entry = FALSE;
vals = ldap_get_values_len(HDB2LDAP(db), msg, "objectClass");
if (vals) {
int num_objectclasses = ldap_count_values_len(vals);
for (i=0; i < num_objectclasses; i++) {
if (bervalstrcmp(vals[i], "sambaSamAccount"))
is_samba_account = TRUE;
else if (bervalstrcmp(vals[i], structural_object))
is_account = TRUE;
else if (bervalstrcmp(vals[i], "krb5Principal"))
is_heimdal_principal = TRUE;
else if (bervalstrcmp(vals[i], "krb5KDCEntry"))
is_heimdal_entry = TRUE;
}
ldap_value_free_len(vals);
}
/*
* If this is just a "account" entry and no other objectclass
* is hanging on this entry, it's really a new entry.
*/
if (is_samba_account == FALSE && is_heimdal_principal == FALSE &&
is_heimdal_entry == FALSE) {
if (is_account == TRUE) {
is_new_entry = TRUE;
} else {
ret = HDB_ERR_NOENTRY;
goto out;
}
}
} else
is_new_entry = TRUE;
if (is_new_entry) {
/* to make it perfectly obvious we're depending on
* orig being intiialized to zero */
memset(&orig, 0, sizeof(orig));
ret = LDAP_addmod(&mods, LDAP_MOD_ADD, "objectClass", "top");
if (ret)
goto out;
/* account is the structural object class */
if (is_account == FALSE) {
ret = LDAP_addmod(&mods, LDAP_MOD_ADD, "objectClass",
structural_object);
is_account = TRUE;
if (ret)
goto out;
}
ret = LDAP_addmod(&mods, LDAP_MOD_ADD, "objectClass", "krb5Principal");
is_heimdal_principal = TRUE;
if (ret)
goto out;
ret = LDAP_addmod(&mods, LDAP_MOD_ADD, "objectClass", "krb5KDCEntry");
is_heimdal_entry = TRUE;
if (ret)
goto out;
}
if (is_new_entry ||
krb5_principal_compare(context, ent->entry.principal, orig.entry.principal)
== FALSE)
{
if (is_heimdal_principal || is_heimdal_entry) {
ret = krb5_unparse_name(context, ent->entry.principal, &tmp);
if (ret)
goto out;
ret = LDAP_addmod(&mods, LDAP_MOD_REPLACE,
"krb5PrincipalName", tmp);
if (ret) {
free(tmp);
goto out;
}
free(tmp);
}
if (is_account || is_samba_account) {
ret = krb5_unparse_name_short(context, ent->entry.principal, &tmp);
if (ret)
goto out;
ret = LDAP_addmod(&mods, LDAP_MOD_REPLACE, "uid", tmp);
if (ret) {
free(tmp);
goto out;
}
free(tmp);
}
}
if (is_heimdal_entry && (ent->entry.kvno != orig.entry.kvno || is_new_entry)) {
ret = LDAP_addmod_integer(context, &mods, LDAP_MOD_REPLACE,
"krb5KeyVersionNumber",
ent->entry.kvno);
if (ret)
goto out;
}
if (is_heimdal_entry && ent->entry.valid_start) {
if (orig.entry.valid_end == NULL
|| (*(ent->entry.valid_start) != *(orig.entry.valid_start))) {
ret = LDAP_addmod_generalized_time(&mods, LDAP_MOD_REPLACE,
"krb5ValidStart",
ent->entry.valid_start);
if (ret)
goto out;
}
}
if (ent->entry.valid_end) {
if (orig.entry.valid_end == NULL || (*(ent->entry.valid_end) != *(orig.entry.valid_end))) {
if (is_heimdal_entry) {
ret = LDAP_addmod_generalized_time(&mods, LDAP_MOD_REPLACE,
"krb5ValidEnd",
ent->entry.valid_end);
if (ret)
goto out;
}
if (is_samba_account) {
ret = LDAP_addmod_integer(context, &mods, LDAP_MOD_REPLACE,
"sambaKickoffTime",
*(ent->entry.valid_end));
if (ret)
goto out;
}
}
}
if (ent->entry.pw_end) {
if (orig.entry.pw_end == NULL || (*(ent->entry.pw_end) != *(orig.entry.pw_end))) {
if (is_heimdal_entry) {
ret = LDAP_addmod_generalized_time(&mods, LDAP_MOD_REPLACE,
"krb5PasswordEnd",
ent->entry.pw_end);
if (ret)
goto out;
}
if (is_samba_account) {
ret = LDAP_addmod_integer(context, &mods, LDAP_MOD_REPLACE,
"sambaPwdMustChange",
*(ent->entry.pw_end));
if (ret)
goto out;
}
}
}
#if 0 /* we we have last_pw_change */
if (is_samba_account && ent->entry.last_pw_change) {
if (orig.entry.last_pw_change == NULL || (*(ent->entry.last_pw_change) != *(orig.entry.last_pw_change))) {
ret = LDAP_addmod_integer(context, &mods, LDAP_MOD_REPLACE,
"sambaPwdLastSet",
*(ent->entry.last_pw_change));
if (ret)
goto out;
}
}
#endif
if (is_heimdal_entry && ent->entry.max_life) {
if (orig.entry.max_life == NULL
|| (*(ent->entry.max_life) != *(orig.entry.max_life))) {
ret = LDAP_addmod_integer(context, &mods, LDAP_MOD_REPLACE,
"krb5MaxLife",
*(ent->entry.max_life));
if (ret)
goto out;
}
}
if (is_heimdal_entry && ent->entry.max_renew) {
if (orig.entry.max_renew == NULL
|| (*(ent->entry.max_renew) != *(orig.entry.max_renew))) {
ret = LDAP_addmod_integer(context, &mods, LDAP_MOD_REPLACE,
"krb5MaxRenew",
*(ent->entry.max_renew));
if (ret)
goto out;
}
}
oflags = HDBFlags2int(orig.entry.flags);
nflags = HDBFlags2int(ent->entry.flags);
if (is_heimdal_entry && oflags != nflags) {
ret = LDAP_addmod_integer(context, &mods, LDAP_MOD_REPLACE,
"krb5KDCFlags",
nflags);
if (ret)
goto out;
}
/* Remove keys if they exists, and then replace keys. */
if (!is_new_entry && orig.entry.keys.len > 0) {
vals = ldap_get_values_len(HDB2LDAP(db), msg, "krb5Key");
if (vals) {
ldap_value_free_len(vals);
ret = LDAP_addmod(&mods, LDAP_MOD_DELETE, "krb5Key", NULL);
if (ret)
goto out;
}
}
for (i = 0; i < ent->entry.keys.len; i++) {
if (is_samba_account
&& ent->entry.keys.val[i].key.keytype == ETYPE_ARCFOUR_HMAC_MD5) {
char *ntHexPassword;
char *nt;
time_t now = time(NULL);
/* the key might have been 'sealed', but samba passwords
are clear in the directory */
ret = hdb_unseal_key(context, db, &ent->entry.keys.val[i]);
if (ret)
goto out;
nt = ent->entry.keys.val[i].key.keyvalue.data;
/* store in ntPassword, not krb5key */
ret = hex_encode(nt, 16, &ntHexPassword);
if (ret < 0) {
ret = ENOMEM;
krb5_set_error_message(context, ret, "hdb-ldap: failed to "
"hex encode key");
goto out;
}
ret = LDAP_addmod(&mods, LDAP_MOD_REPLACE, "sambaNTPassword",
ntHexPassword);
free(ntHexPassword);
if (ret)
goto out;
ret = LDAP_addmod_integer(context, &mods, LDAP_MOD_REPLACE,
"sambaPwdLastSet", now);
if (ret)
goto out;
/* have to kill the LM passwod if it exists */
vals = ldap_get_values_len(HDB2LDAP(db), msg, "sambaLMPassword");
if (vals) {
ldap_value_free_len(vals);
ret = LDAP_addmod(&mods, LDAP_MOD_DELETE,
"sambaLMPassword", NULL);
if (ret)
goto out;
}
} else if (is_heimdal_entry) {
unsigned char *buf;
size_t len, buf_size;
ASN1_MALLOC_ENCODE(Key, buf, buf_size, &ent->entry.keys.val[i], &len, ret);
if (ret)
goto out;
if(buf_size != len)
krb5_abortx(context, "internal error in ASN.1 encoder");
/* addmod_len _owns_ the key, doesn't need to copy it */
ret = LDAP_addmod_len(&mods, LDAP_MOD_ADD, "krb5Key", buf, len);
if (ret)
goto out;
}
}
if (ent->entry.etypes) {
int add_krb5EncryptionType = 0;
/*
* Only add/modify krb5EncryptionType if it's a new heimdal
* entry or krb5EncryptionType already exists on the entry.
*/
if (!is_new_entry) {
vals = ldap_get_values_len(HDB2LDAP(db), msg, "krb5EncryptionType");
if (vals) {
ldap_value_free_len(vals);
ret = LDAP_addmod(&mods, LDAP_MOD_DELETE, "krb5EncryptionType",
NULL);
if (ret)
goto out;
add_krb5EncryptionType = 1;
}
} else if (is_heimdal_entry)
add_krb5EncryptionType = 1;
if (add_krb5EncryptionType) {
for (i = 0; i < ent->entry.etypes->len; i++) {
if (is_samba_account &&
ent->entry.keys.val[i].key.keytype == ETYPE_ARCFOUR_HMAC_MD5)
{
;
} else if (is_heimdal_entry) {
ret = LDAP_addmod_integer(context, &mods, LDAP_MOD_ADD,
"krb5EncryptionType",
ent->entry.etypes->val[i]);
if (ret)
goto out;
}
}
}
}
/* for clarity */
ret = 0;
out:
if (ret == 0)
*pmods = mods;
else if (mods != NULL) {
ldap_mods_free(mods, 1);
*pmods = NULL;
}
if (msg)
hdb_free_entry(context, &orig);
return ret;
}
static krb5_error_code
LDAP_seq(krb5_context context, HDB * db, unsigned flags, hdb_entry * entry)
{
int msgid, rc, parserc;
krb5_error_code ret;
LDAPMessage *e;
msgid = HDB2MSGID(db);
if (msgid < 0)
return HDB_ERR_NOENTRY;
do {
rc = ldap_result(HDB2LDAP(db), msgid, LDAP_MSG_ONE, NULL, &e);
switch (rc) {
case LDAP_RES_SEARCH_REFERENCE:
ldap_msgfree(e);
ret = 0;
break;
case LDAP_RES_SEARCH_ENTRY:
/* We have an entry. Parse it. */
ret = LDAP_message2entry(context, db, e, entry);
ldap_msgfree(e);
break;
case LDAP_RES_SEARCH_RESULT:
/* We're probably at the end of the results. If not, abandon. */
parserc =
ldap_parse_result(HDB2LDAP(db), e, NULL, NULL, NULL,
NULL, NULL, 1);
if (parserc != LDAP_SUCCESS
&& parserc != LDAP_MORE_RESULTS_TO_RETURN) {
krb5_set_error_string(context, "ldap_parse_result: %s",
ldap_err2string(parserc));
ldap_abandon(HDB2LDAP(db), msgid);
}
ret = HDB_ERR_NOENTRY;
HDBSETMSGID(db, -1);
break;
case LDAP_SERVER_DOWN:
ldap_msgfree(e);
LDAP_close(context, db);
HDBSETMSGID(db, -1);
ret = ENETDOWN;
break;
default:
/* Some unspecified error (timeout?). Abandon. */
ldap_msgfree(e);
ldap_abandon(HDB2LDAP(db), msgid);
ret = HDB_ERR_NOENTRY;
HDBSETMSGID(db, -1);
break;
}
} while (rc == LDAP_RES_SEARCH_REFERENCE);
if (ret == 0) {
if (db->hdb_master_key_set && (flags & HDB_F_DECRYPT)) {
ret = hdb_unseal_keys(context, db, entry);
if (ret)
hdb_free_entry(context,entry);
}
}
return ret;
}
