static krb5_error_code
LDAP_firstkey(krb5_context context, HDB *db, unsigned flags,
hdb_entry *entry)
{
krb5_error_code ret;
int msgid;
ret = LDAP__connect(context, db);
if (ret)
return ret;
ret = LDAP_no_size_limit(context, HDB2LDAP(db));
if (ret)
return ret;
msgid = ldap_search(HDB2LDAP(db), HDB2BASE(db),
LDAP_SCOPE_SUBTREE,
"(|(objectClass=krb5Principal)(objectClass=sambaSamAccount))",
krb5kdcentry_attrs, 0);
if (msgid < 0)
return HDB_ERR_NOENTRY;
HDBSETMSGID(db, msgid);
return LDAP_seq(context, db, flags, entry);
}
static krb5_error_code
LDAP_close(krb5_context context, HDB * db)
{
if (HDB2LDAP(db)) {
ldap_unbind_ext(HDB2LDAP(db), NULL, NULL);
((struct hdbldapdb *)db->hdb_db)->h_lp = NULL;
}
return 0;
}
static krb5_error_code
LDAP__connect(krb5_context context, HDB * db)
{
int rc, version = LDAP_VERSION3;
/*
* Empty credentials to do a SASL bind with LDAP. Note that empty
* different from NULL credentials. If you provide NULL
* credentials instead of empty credentials you will get a SASL
* bind in progress message.
*/
struct berval bv = { 0, "" };
if (HDB2LDAP(db)) {
/* connection has been opened. ping server. */
struct sockaddr_un addr;
socklen_t len = sizeof(addr);
int sd;
if (ldap_get_option(HDB2LDAP(db), LDAP_OPT_DESC, &sd) == 0 &&
getpeername(sd, (struct sockaddr *) &addr, &len) < 0) {
/* the other end has died. reopen. */
LDAP_close(context, db);
}
}
if (HDB2LDAP(db) != NULL) /* server is UP */
return 0;
rc = ldap_initialize(&((struct hdbldapdb *)db->hdb_db)->h_lp, "ldapi:///");
if (rc != LDAP_SUCCESS) {
krb5_set_error_string(context, "ldap_initialize: %s",
ldap_err2string(rc));
return HDB_ERR_NOENTRY;
}
rc = ldap_set_option(HDB2LDAP(db), LDAP_OPT_PROTOCOL_VERSION,
(const void *)&version);
if (rc != LDAP_SUCCESS) {
krb5_set_error_string(context, "ldap_set_option: %s",
ldap_err2string(rc));
LDAP_close(context, db);
return HDB_ERR_BADVERSION;
}
rc = ldap_sasl_bind_s(HDB2LDAP(db), NULL, "EXTERNAL", &bv,
NULL, NULL, NULL);
if (rc != LDAP_SUCCESS) {
krb5_set_error_string(context, "ldap_sasl_bind_s: %s",
ldap_err2string(rc));
LDAP_close(context, db);
return HDB_ERR_BADVERSION;
}
return 0;
}
static krb5_error_code
LDAP_remove(krb5_context context, HDB * db, hdb_entry * entry)
{
krb5_error_code ret;
LDAPMessage *msg, *e;
char *dn = NULL;
int rc, limit = LDAP_NO_LIMIT;
ret = LDAP_principal2message(context, db, entry->principal, &msg);
if (ret)
goto out;
e = ldap_first_entry(HDB2LDAP(db), msg);
if (e == NULL) {
ret = HDB_ERR_NOENTRY;
goto out;
}
dn = ldap_get_dn(HDB2LDAP(db), e);
if (dn == NULL) {
ret = HDB_ERR_NOENTRY;
goto out;
}
rc = ldap_set_option(HDB2LDAP(db), LDAP_OPT_SIZELIMIT, (const void *)&limit);
if (rc != LDAP_SUCCESS) {
krb5_set_error_string(context, "ldap_set_option: %s",
ldap_err2string(rc));
ret = HDB_ERR_BADVERSION;
goto out;
}
rc = ldap_delete_s(HDB2LDAP(db), dn);
if (check_ldap(context, db, rc)) {
krb5_set_error_string(context, "ldap_delete_s: %s",
ldap_err2string(rc));
ret = HDB_ERR_CANT_LOCK_DB;
} else
ret = 0;
out:
if (dn != NULL)
free(dn);
if (msg != NULL)
ldap_msgfree(msg);
return ret;
}
static krb5_error_code
LDAP_get_string_value(HDB * db, LDAPMessage * entry,
const char *attribute, char **ptr)
{
struct berval **vals;
vals = ldap_get_values_len(HDB2LDAP(db), entry, attribute);
if (vals == NULL || vals[0] == NULL) {
*ptr = NULL;
return HDB_ERR_NOENTRY;
}
*ptr = malloc(vals[0]->bv_len + 1);
if (*ptr == NULL) {
ldap_value_free_len(vals);
return ENOMEM;
}
memcpy(*ptr, vals[0]->bv_val, vals[0]->bv_len);
(*ptr)[vals[0]->bv_len] = 0;
ldap_value_free_len(vals);
return 0;
}
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_dn2principal(krb5_context context, HDB * db, const char *dn,
krb5_principal * principal)
{
krb5_error_code ret;
int rc;
const char *filter = "(objectClass=krb5Principal)";
LDAPMessage *res = NULL, *e;
char *p;
ret = LDAP_no_size_limit(context, HDB2LDAP(db));
if (ret)
goto out;
rc = ldap_search_ext_s(HDB2LDAP(db), dn, LDAP_SCOPE_SUBTREE,
filter, krb5principal_attrs, 0,
NULL, NULL, NULL,
0, &res);
if (check_ldap(context, db, rc)) {
ret = HDB_ERR_NOENTRY;
krb5_set_error_message(context, ret, "ldap_search_ext_s: "
"filter: %s error: %s",
filter, ldap_err2string(rc));
goto out;
}
e = ldap_first_entry(HDB2LDAP(db), res);
if (e == NULL) {
ret = HDB_ERR_NOENTRY;
goto out;
}
ret = LDAP_get_string_value(db, e, "krb5PrincipalName", &p);
if (ret) {
ret = HDB_ERR_NOENTRY;
goto out;
}
ret = krb5_parse_name(context, p, principal);
free(p);
out:
if (res)
ldap_msgfree(res);
return ret;
}
static krb5_error_code
LDAP_dn2principal(krb5_context context, HDB * db, const char *dn,
krb5_principal * principal)
{
krb5_error_code ret;
int rc;
char **values;
LDAPMessage *res = NULL, *e;
ret = LDAP_no_size_limit(context, HDB2LDAP(db));
if (ret)
goto out;
rc = ldap_search_s(HDB2LDAP(db), dn, LDAP_SCOPE_SUBTREE,
"(objectClass=krb5Principal)", krb5principal_attrs,
0, &res);
if (check_ldap(context, db, rc)) {
krb5_set_error_string(context, "ldap_search_s: %s",
ldap_err2string(rc));
ret = HDB_ERR_NOENTRY;
goto out;
}
e = ldap_first_entry(HDB2LDAP(db), res);
if (e == NULL) {
ret = HDB_ERR_NOENTRY;
goto out;
}
values = ldap_get_values(HDB2LDAP(db), e, "krb5PrincipalName");
if (values == NULL) {
ret = HDB_ERR_NOENTRY;
goto out;
}
ret = krb5_parse_name(context, values[0], principal);
ldap_value_free(values);
out:
if (res)
ldap_msgfree(res);
return ret;
}
static krb5_error_code
LDAP_get_integer_value(HDB * db, LDAPMessage * entry,
const char *attribute, int *ptr)
{
char **vals;
vals = ldap_get_values(HDB2LDAP(db), entry, (char *) attribute);
if (vals == NULL)
return HDB_ERR_NOENTRY;
*ptr = atoi(vals[0]);
ldap_value_free(vals);
return 0;
}
static krb5_error_code
LDAP_get_string_value(HDB * db, LDAPMessage * entry,
const char *attribute, char **ptr)
{
char **vals;
int ret;
vals = ldap_get_values(HDB2LDAP(db), entry, (char *) attribute);
if (vals == NULL) {
*ptr = NULL;
return HDB_ERR_NOENTRY;
}
*ptr = strdup(vals[0]);
if (*ptr == NULL)
ret = ENOMEM;
else
ret = 0;
ldap_value_free(vals);
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;
}
/*
* Construct an hdb_entry from a directory entry.
*/
static krb5_error_code
LDAP_message2entry(krb5_context context, HDB * db, LDAPMessage * msg,
hdb_entry * ent)
{
char *unparsed_name = NULL, *dn = NULL, *ntPasswordIN = NULL;
char *samba_acct_flags = NULL;
int ret;
unsigned long tmp;
struct berval **keys;
char **values;
int tmp_time;
memset(ent, 0, sizeof(*ent));
ent->flags = int2HDBFlags(0);
ret = LDAP_get_string_value(db, msg, "krb5PrincipalName", &unparsed_name);
if (ret == 0) {
ret = krb5_parse_name(context, unparsed_name, &ent->principal);
if (ret)
goto out;
} else {
ret = LDAP_get_string_value(db, msg, "uid",
&unparsed_name);
if (ret == 0) {
ret = krb5_parse_name(context, unparsed_name, &ent->principal);
if (ret)
goto out;
} else {
krb5_set_error_string(context, "hdb-ldap: ldap entry missing"
"principal name");
return HDB_ERR_NOENTRY;
}
}
ret = LDAP_get_integer_value(db, msg, "krb5KeyVersionNumber",
&ent->kvno);
if (ret)
ent->kvno = 0;
keys = ldap_get_values_len(HDB2LDAP(db), msg, "krb5Key");
if (keys != NULL) {
int i;
size_t l;
ent->keys.len = ldap_count_values_len(keys);
ent->keys.val = (Key *) calloc(ent->keys.len, sizeof(Key));
if (ent->keys.val == NULL) {
krb5_set_error_string(context, "calloc: out of memory");
ret = ENOMEM;
goto out;
}
for (i = 0; i < ent->keys.len; i++) {
decode_Key((unsigned char *) keys[i]->bv_val,
(size_t) keys[i]->bv_len, &ent->keys.val[i], &l);
}
ber_bvecfree(keys);
} else {
#if 1
/*
* This violates the ASN1 but it allows a principal to
* be related to a general directory entry without creating
* the keys. Hopefully it's OK.
*/
ent->keys.len = 0;
ent->keys.val = NULL;
#else
ret = HDB_ERR_NOENTRY;
goto out;
#endif
}
values = ldap_get_values(HDB2LDAP(db), msg, "krb5EncryptionType");
if (values != NULL) {
int i;
ent->etypes = malloc(sizeof(*(ent->etypes)));
if (ent->etypes == NULL) {
krb5_set_error_string(context, "malloc: out of memory");
ret = ENOMEM;
goto out;
}
ent->etypes->len = ldap_count_values(values);
ent->etypes->val = calloc(ent->etypes->len, sizeof(int));
if (ent->etypes->val == NULL) {
krb5_set_error_string(context, "malloc: out of memory");
ret = ENOMEM;
goto out;
}
for (i = 0; i < ent->etypes->len; i++) {
ent->etypes->val[i] = atoi(values[i]);
}
ldap_value_free(values);
}
/* manually construct the NT (type 23) key */
ret = LDAP_get_string_value(db, msg, "sambaNTPassword", &ntPasswordIN);
if (ret == 0) {
int *etypes;
Key *keys;
keys = realloc(ent->keys.val,
(ent->keys.len + 1) * sizeof(ent->keys.val[0]));
if (keys == NULL) {
free(ntPasswordIN);
krb5_set_error_string(context, "malloc: out of memory");
ret = ENOMEM;
goto out;
}
ent->keys.val = keys;
memset(&ent->keys.val[ent->keys.len], 0, sizeof(Key));
ent->keys.val[ent->keys.len].key.keytype = ETYPE_ARCFOUR_HMAC_MD5;
ret = krb5_data_alloc (&ent->keys.val[ent->keys.len].key.keyvalue, 16);
if (ret) {
krb5_set_error_string(context, "malloc: out of memory");
free(ntPasswordIN);
ret = ENOMEM;
goto out;
}
ret = hex_decode(ntPasswordIN,
ent->keys.val[ent->keys.len].key.keyvalue.data, 16);
ent->keys.len++;
if (ent->etypes == NULL) {
ent->etypes = malloc(sizeof(*(ent->etypes)));
if (ent->etypes == NULL) {
krb5_set_error_string(context, "malloc: out of memory");
ret = ENOMEM;
goto out;
}
ent->etypes->val = NULL;
ent->etypes->len = 0;
}
etypes = realloc(ent->etypes->val,
(ent->etypes->len + 1) * sizeof(ent->etypes->val[0]));
if (etypes == NULL) {
krb5_set_error_string(context, "malloc: out of memory");
ret = ENOMEM;
goto out;
}
ent->etypes->val = etypes;
ent->etypes->val[ent->etypes->len] = ETYPE_ARCFOUR_HMAC_MD5;
ent->etypes->len++;
}
ret = LDAP_get_generalized_time_value(db, msg, "createTimestamp",
&ent->created_by.time);
if (ret)
ent->created_by.time = time(NULL);
ent->created_by.principal = NULL;
ret = LDAP_get_string_value(db, msg, "creatorsName", &dn);
if (ret == 0) {
if (LDAP_dn2principal(context, db, dn, &ent->created_by.principal)
!= 0) {
ent->created_by.principal = NULL;
}
free(dn);
}
ent->modified_by = (Event *) malloc(sizeof(Event));
if (ent->modified_by == NULL) {
krb5_set_error_string(context, "malloc: out of memory");
ret = ENOMEM;
goto out;
}
ret = LDAP_get_generalized_time_value(db, msg, "modifyTimestamp",
&ent->modified_by->time);
if (ret == 0) {
ret = LDAP_get_string_value(db, msg, "modifiersName", &dn);
if (LDAP_dn2principal(context, db, dn, &ent->modified_by->principal))
ent->modified_by->principal = NULL;
free(dn);
} else {
free(ent->modified_by);
ent->modified_by = NULL;
}
ent->valid_start = malloc(sizeof(*ent->valid_start));
if (ent->valid_start == NULL) {
krb5_set_error_string(context, "malloc: out of memory");
ret = ENOMEM;
goto out;
}
ret = LDAP_get_generalized_time_value(db, msg, "krb5ValidStart",
ent->valid_start);
if (ret) {
/* OPTIONAL */
free(ent->valid_start);
ent->valid_start = NULL;
}
ent->valid_end = malloc(sizeof(*ent->valid_end));
if (ent->valid_end == NULL) {
krb5_set_error_string(context, "malloc: out of memory");
ret = ENOMEM;
goto out;
}
ret = LDAP_get_generalized_time_value(db, msg, "krb5ValidEnd",
ent->valid_end);
if (ret) {
/* OPTIONAL */
free(ent->valid_end);
ent->valid_end = NULL;
}
ret = LDAP_get_integer_value(db, msg, "sambaKickoffTime", &tmp_time);
if (ret == 0) {
if (ent->valid_end == NULL) {
ent->valid_end = malloc(sizeof(*ent->valid_end));
if (ent->valid_end == NULL) {
krb5_set_error_string(context, "malloc: out of memory");
ret = ENOMEM;
goto out;
}
}
*ent->valid_end = tmp_time;
}
ent->pw_end = malloc(sizeof(*ent->pw_end));
if (ent->pw_end == NULL) {
krb5_set_error_string(context, "malloc: out of memory");
ret = ENOMEM;
goto out;
}
ret = LDAP_get_generalized_time_value(db, msg, "krb5PasswordEnd",
ent->pw_end);
if (ret) {
/* OPTIONAL */
free(ent->pw_end);
ent->pw_end = NULL;
}
ret = LDAP_get_integer_value(db, msg, "sambaPwdMustChange", &tmp_time);
if (ret == 0) {
if (ent->pw_end == NULL) {
ent->pw_end = malloc(sizeof(*ent->pw_end));
if (ent->pw_end == NULL) {
krb5_set_error_string(context, "malloc: out of memory");
ret = ENOMEM;
goto out;
}
}
*ent->pw_end = tmp_time;
}
#if 0 /* we we have last_pw_change */
ent->last_pw_change = malloc(sizeof(*ent->last_pw_change));
if (ent->last_pw_change == NULL) {
krb5_set_error_string(context, "malloc: out of memory");
ret = ENOMEM;
goto out;
}
ret = LDAP_get_integer_value(db, msg, "sambaPwdLastSet",
&tmp_time);
if (ret) {
/* OPTIONAL */
free(ent->last_pw_change);
ent->last_pw_change = NULL;
} else
*ent->last_pw_change = tmp_time;
#endif
ent->max_life = malloc(sizeof(*ent->max_life));
if (ent->max_life == NULL) {
krb5_set_error_string(context, "malloc: out of memory");
ret = ENOMEM;
goto out;
}
ret = LDAP_get_integer_value(db, msg, "krb5MaxLife", ent->max_life);
if (ret) {
free(ent->max_life);
ent->max_life = NULL;
}
ent->max_renew = malloc(sizeof(*ent->max_renew));
if (ent->max_renew == NULL) {
krb5_set_error_string(context, "malloc: out of memory");
ret = ENOMEM;
goto out;
}
ret = LDAP_get_integer_value(db, msg, "krb5MaxRenew", ent->max_renew);
if (ret) {
free(ent->max_renew);
ent->max_renew = NULL;
}
values = ldap_get_values(HDB2LDAP(db), msg, "krb5KDCFlags");
if (values != NULL) {
errno = 0;
tmp = strtoul(values[0], (char **) NULL, 10);
if (tmp == ULONG_MAX && errno == ERANGE) {
krb5_set_error_string(context, "strtoul: could not convert flag");
ret = ERANGE;
goto out;
}
} else {
tmp = 0;
}
ent->flags = int2HDBFlags(tmp);
/* Try and find Samba flags to put into the mix */
ret = LDAP_get_string_value(db, msg, "sambaAcctFlags", &samba_acct_flags);
if (ret == 0) {
/* parse the [UXW...] string:
'N' No password
'D' Disabled
'H' Homedir required
'T' Temp account.
'U' User account (normal)
'M' MNS logon user account - what is this ?
'W' Workstation account
'S' Server account
'L' Locked account
'X' No Xpiry on password
'I' Interdomain trust account
*/
int i;
int flags_len = strlen(samba_acct_flags);
if (flags_len < 2)
goto out2;
if (samba_acct_flags[0] != '['
|| samba_acct_flags[flags_len - 1] != ']')
goto out2;
/* Allow forwarding */
if (samba_forwardable)
ent->flags.forwardable = TRUE;
for (i=0; i < flags_len; i++) {
switch (samba_acct_flags[i]) {
case ' ':
case '[':
case ']':
break;
case 'N':
/* how to handle no password in kerberos? */
break;
case 'D':
ent->flags.invalid = TRUE;
break;
case 'H':
break;
case 'T':
/* temp duplicate */
ent->flags.invalid = TRUE;
break;
case 'U':
ent->flags.client = TRUE;
break;
case 'M':
break;
case 'W':
case 'S':
ent->flags.server = TRUE;
ent->flags.client = TRUE;
break;
case 'L':
ent->flags.invalid = TRUE;
break;
case 'X':
if (ent->pw_end) {
free(ent->pw_end);
ent->pw_end = NULL;
}
break;
case 'I':
ent->flags.server = TRUE;
ent->flags.client = TRUE;
break;
}
}
out2:
free(samba_acct_flags);
}
ret = 0;
out:
if (unparsed_name)
free(unparsed_name);
if (ret)
hdb_free_entry(context, ent);
return ret;
}
static krb5_error_code
LDAP__lookup_princ(krb5_context context,
HDB *db,
const char *princname,
const char *userid,
LDAPMessage **msg)
{
krb5_error_code ret;
int rc;
char *filter = NULL;
ret = LDAP__connect(context, db);
if (ret)
return ret;
rc = asprintf(&filter,
"(&(objectClass=krb5Principal)(krb5PrincipalName=%s))",
princname);
if (rc < 0) {
krb5_set_error_string(context, "asprintf: out of memory");
ret = ENOMEM;
goto out;
}
ret = LDAP_no_size_limit(context, HDB2LDAP(db));
if (ret)
goto out;
rc = ldap_search_s(HDB2LDAP(db), HDB2BASE(db), LDAP_SCOPE_SUBTREE, filter,
krb5kdcentry_attrs, 0, msg);
if (check_ldap(context, db, rc)) {
krb5_set_error_string(context, "ldap_search_s: %s",
ldap_err2string(rc));
ret = HDB_ERR_NOENTRY;
goto out;
}
if (userid && ldap_count_entries(HDB2LDAP(db), *msg) == 0) {
free(filter);
filter = NULL;
ldap_msgfree(*msg);
*msg = NULL;
rc = asprintf(&filter,
"(&(|(objectClass=sambaSamAccount)(objectClass=%s))(uid=%s))",
structural_object, userid);
if (rc < 0) {
krb5_set_error_string(context, "asprintf: out of memory");
ret = ENOMEM;
goto out;
}
ret = LDAP_no_size_limit(context, HDB2LDAP(db));
if (ret)
goto out;
rc = ldap_search_s(HDB2LDAP(db), HDB2BASE(db), LDAP_SCOPE_SUBTREE,
filter, krb5kdcentry_attrs, 0, msg);
if (check_ldap(context, db, rc)) {
krb5_set_error_string(context, "ldap_search_s: %s",
ldap_err2string(rc));
ret = HDB_ERR_NOENTRY;
goto out;
}
}
ret = 0;
out:
if (filter)
free(filter);
return ret;
}
static krb5_error_code
LDAP_store(krb5_context context, HDB * db, unsigned flags,
hdb_entry * entry)
{
LDAPMod **mods = NULL;
krb5_error_code ret;
const char *errfn;
int rc;
LDAPMessage *msg = NULL, *e = NULL;
char *dn = NULL, *name = NULL;
ret = LDAP_principal2message(context, db, entry->principal, &msg);
if (ret == 0)
e = ldap_first_entry(HDB2LDAP(db), msg);
ret = krb5_unparse_name(context, entry->principal, &name);
if (ret) {
free(name);
return ret;
}
ret = hdb_seal_keys(context, db, entry);
if (ret)
goto out;
/* turn new entry into LDAPMod array */
ret = LDAP_entry2mods(context, db, entry, e, &mods);
if (ret)
goto out;
if (e == NULL) {
ret = asprintf(&dn, "krb5PrincipalName=%s,%s", name, HDB2CREATE(db));
if (ret < 0) {
krb5_set_error_string(context, "asprintf: out of memory");
ret = ENOMEM;
goto out;
}
} else if (flags & HDB_F_REPLACE) {
/* Entry exists, and we're allowed to replace it. */
dn = ldap_get_dn(HDB2LDAP(db), e);
} else {
/* Entry exists, but we're not allowed to replace it. Bail. */
ret = HDB_ERR_EXISTS;
goto out;
}
/* write entry into directory */
if (e == NULL) {
/* didn't exist before */
rc = ldap_add_s(HDB2LDAP(db), dn, mods);
errfn = "ldap_add_s";
} else {
/* already existed, send deltas only */
rc = ldap_modify_s(HDB2LDAP(db), dn, mods);
errfn = "ldap_modify_s";
}
if (check_ldap(context, db, rc)) {
char *ld_error = NULL;
ldap_get_option(HDB2LDAP(db), LDAP_OPT_ERROR_STRING,
&ld_error);
krb5_set_error_string(context, "%s: %s (dn=%s) %s: %s",
errfn, name, dn, ldap_err2string(rc), ld_error);
ret = HDB_ERR_CANT_LOCK_DB;
} else
ret = 0;
out:
/* free stuff */
if (dn)
free(dn);
if (msg)
ldap_msgfree(msg);
if (mods)
ldap_mods_free(mods, 1);
if (name)
free(name);
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;
}
static krb5_error_code
LDAP__lookup_princ(krb5_context context,
HDB *db,
const char *princname,
const char *userid,
LDAPMessage **msg)
{
struct berval namebv, quotedp;
krb5_error_code ret;
int rc;
char *filter = NULL;
ret = LDAP__connect(context, db);
if (ret)
return ret;
/*
* Quote searches that contain filter language, this quote
* searches for *@REALM, which takes very long time.
*/
ber_str2bv(princname, 0, 0, &namebv);
if (ldap_bv2escaped_filter_value(&namebv, "edp) != 0) {
ret = ENOMEM;
krb5_set_error_message(context, ret, "malloc: out of memory");
goto out;
}
rc = asprintf(&filter,
"(&(objectClass=krb5Principal)(krb5PrincipalName=%s))",
quotedp.bv_val);
ber_memfree(quotedp.bv_val);
if (rc < 0) {
ret = ENOMEM;
krb5_set_error_message(context, ret, "malloc: out of memory");
goto out;
}
ret = LDAP_no_size_limit(context, HDB2LDAP(db));
if (ret)
goto out;
rc = ldap_search_ext_s(HDB2LDAP(db), HDB2BASE(db),
LDAP_SCOPE_SUBTREE, filter,
krb5kdcentry_attrs, 0,
NULL, NULL, NULL,
0, msg);
if (check_ldap(context, db, rc)) {
ret = HDB_ERR_NOENTRY;
krb5_set_error_message(context, ret, "ldap_search_ext_s: "
"filter: %s - error: %s",
filter, ldap_err2string(rc));
goto out;
}
if (userid && ldap_count_entries(HDB2LDAP(db), *msg) == 0) {
free(filter);
filter = NULL;
ldap_msgfree(*msg);
*msg = NULL;
ber_str2bv(userid, 0, 0, &namebv);
if (ldap_bv2escaped_filter_value(&namebv, "edp) != 0) {
ret = ENOMEM;
krb5_set_error_message(context, ret, "malloc: out of memory");
goto out;
}
rc = asprintf(&filter,
"(&(|(objectClass=sambaSamAccount)(objectClass=%s))(uid=%s))",
structural_object, quotedp.bv_val);
ber_memfree(quotedp.bv_val);
if (rc < 0) {
ret = ENOMEM;
krb5_set_error_message(context, ret, "asprintf: out of memory");
goto out;
}
ret = LDAP_no_size_limit(context, HDB2LDAP(db));
if (ret)
goto out;
rc = ldap_search_ext_s(HDB2LDAP(db), HDB2BASE(db), LDAP_SCOPE_SUBTREE,
filter, krb5kdcentry_attrs, 0,
NULL, NULL, NULL,
0, msg);
if (check_ldap(context, db, rc)) {
ret = HDB_ERR_NOENTRY;
krb5_set_error_message(context, ret,
"ldap_search_ext_s: filter: %s error: %s",
filter, ldap_err2string(rc));
goto out;
}
}
ret = 0;
out:
if (filter)
free(filter);
return ret;
}
