int
hdb_entry_set_password(krb5_context context, HDB *db,
hdb_entry *entry, const char *p)
{
HDB_extension ext;
hdb_master_key key;
int ret;
ext.mandatory = FALSE;
ext.data.element = choice_HDB_extension_data_password;
if (db->hdb_master_key_set) {
key = _hdb_find_master_key(NULL, db->hdb_master_key);
if (key == NULL) {
krb5_set_error_message(context, HDB_ERR_NO_MKEY,
"hdb_entry_set_password: "******"failed to find masterkey");
return HDB_ERR_NO_MKEY;
}
ret = _hdb_mkey_encrypt(context, key, HDB_KU_MKEY,
p, strlen(p) + 1,
&ext.data.u.password.password);
if (ret)
return ret;
ext.data.u.password.mkvno =
malloc(sizeof(*ext.data.u.password.mkvno));
if (ext.data.u.password.mkvno == NULL) {
free_HDB_extension(&ext);
krb5_set_error_message(context, ENOMEM, "malloc: out of memory");
return ENOMEM;
}
*ext.data.u.password.mkvno = _hdb_mkey_version(key);
} else {
ext.data.u.password.mkvno = NULL;
ret = krb5_data_copy(&ext.data.u.password.password,
p, strlen(p) + 1);
if (ret) {
krb5_set_error_message(context, ret, "malloc: out of memory");
free_HDB_extension(&ext);
return ret;
}
}
ret = hdb_replace_extension(context, entry, &ext);
free_HDB_extension(&ext);
return ret;
}
krb5_error_code
hdb_clear_extension(krb5_context context,
hdb_entry *entry,
int type)
{
int i;
if (entry->extensions == NULL)
return 0;
for (i = 0; i < entry->extensions->len; i++) {
if (entry->extensions->val[i].data.element == type) {
free_HDB_extension(&entry->extensions->val[i]);
memmove(&entry->extensions->val[i],
&entry->extensions->val[i + 1],
sizeof(entry->extensions->val[i]) * (entry->extensions->len - i - 1));
entry->extensions->len--;
}
}
if (entry->extensions->len == 0) {
free(entry->extensions->val);
free(entry->extensions);
entry->extensions = NULL;
}
return 0;
}
/**
* This function adds an HDB entry's current keyset to the entry's key
* history. The current keyset is left alone; the caller is responsible
* for freeing it.
*
* @param context Context
* @param entry HDB entry
*/
krb5_error_code
hdb_add_current_keys_to_history(krb5_context context, hdb_entry *entry)
{
krb5_boolean replace = FALSE;
krb5_error_code ret;
HDB_extension *ext;
HDB_Ext_KeySet *keys;
hdb_keyset newkeyset;
time_t newtime;
if (entry->keys.len == 0)
return 0; /* nothing to do */
ext = hdb_find_extension(entry, choice_HDB_extension_data_hist_keys);
if (ext == NULL) {
replace = TRUE;
ext = calloc(1, sizeof (*ext));
if (ext == NULL)
return krb5_enomem(context);
ext->data.element = choice_HDB_extension_data_hist_keys;
}
keys = &ext->data.u.hist_keys;
ext->mandatory = FALSE;
/*
* Copy in newest old keyset
*/
ret = hdb_entry_get_pw_change_time(entry, &newtime);
if (ret)
goto out;
memset(&newkeyset, 0, sizeof(newkeyset));
newkeyset.keys = entry->keys;
newkeyset.kvno = entry->kvno;
newkeyset.set_time = &newtime;
ret = add_HDB_Ext_KeySet(keys, &newkeyset);
if (ret)
goto out;
if (replace) {
/* hdb_replace_extension() deep-copies ext; what a waste */
ret = hdb_replace_extension(context, entry, ext);
if (ret)
goto out;
}
ret = hdb_prune_keys(context, entry);
if (ret)
goto out;
out:
if (replace && ext) {
free_HDB_extension(ext);
free(ext);
}
return ret;
}
static void
add_constrained_delegation(krb5_context contextp,
kadm5_principal_ent_rec *princ,
struct getarg_strings *strings)
{
krb5_error_code ret;
HDB_extension ext;
krb5_data buf;
size_t size = 0;
memset(&ext, 0, sizeof(ext));
ext.mandatory = FALSE;
ext.data.element = choice_HDB_extension_data_allowed_to_delegate_to;
if (strings->num_strings == 1 && strings->strings[0][0] == '\0') {
ext.data.u.allowed_to_delegate_to.val = NULL;
ext.data.u.allowed_to_delegate_to.len = 0;
} else {
krb5_principal p;
int i;
ext.data.u.allowed_to_delegate_to.val =
calloc(strings->num_strings,
sizeof(ext.data.u.allowed_to_delegate_to.val[0]));
ext.data.u.allowed_to_delegate_to.len = strings->num_strings;
for (i = 0; i < strings->num_strings; i++) {
ret = krb5_parse_name(contextp, strings->strings[i], &p);
if (ret)
abort();
ret = copy_Principal(p, &ext.data.u.allowed_to_delegate_to.val[i]);
if (ret)
abort();
krb5_free_principal(contextp, p);
}
}
ASN1_MALLOC_ENCODE(HDB_extension, buf.data, buf.length,
&ext, &size, ret);
free_HDB_extension(&ext);
if (ret)
abort();
if (buf.length != size)
abort();
add_tl(princ, KRB5_TL_EXTENSION, &buf);
}
/**
* This function adds a key to an HDB entry's key history.
*
* @param context Context
* @param entry HDB entry
* @param kvno Key version number of the key to add to the history
* @param key The Key to add
*/
krb5_error_code
hdb_add_history_key(krb5_context context, hdb_entry *entry, krb5_kvno kvno, Key *key)
{
size_t i;
hdb_keyset keyset;
HDB_Ext_KeySet *hist_keys;
HDB_extension ext;
HDB_extension *extp;
krb5_error_code ret;
memset(&keyset, 0, sizeof (keyset));
memset(&ext, 0, sizeof (ext));
extp = hdb_find_extension(entry, choice_HDB_extension_data_hist_keys);
if (extp == NULL) {
ext.data.element = choice_HDB_extension_data_hist_keys;
extp = &ext;
}
extp->mandatory = FALSE;
hist_keys = &extp->data.u.hist_keys;
for (i = 0; i < hist_keys->len; i++) {
if (hist_keys->val[i].kvno == kvno) {
ret = add_Keys(&hist_keys->val[i].keys, key);
goto out;
}
}
keyset.kvno = kvno;
ret = add_Keys(&keyset.keys, key);
if (ret)
goto out;
ret = add_HDB_Ext_KeySet(hist_keys, &keyset);
if (ret)
goto out;
if (extp == &ext) {
ret = hdb_replace_extension(context, entry, &ext);
if (ret)
goto out;
}
out:
free_hdb_keyset(&keyset);
free_HDB_extension(&ext);
return ret;
}
static kadm5_ret_t
perform_tl_data(krb5_context context,
HDB *db,
hdb_entry_ex *ent,
const krb5_tl_data *tl_data)
{
kadm5_ret_t ret = 0;
if (tl_data->tl_data_type == KRB5_TL_PASSWORD) {
heim_utf8_string pw = tl_data->tl_data_contents;
if (pw[tl_data->tl_data_length] != '\0')
return KADM5_BAD_TL_TYPE;
ret = hdb_entry_set_password(context, db, &ent->entry, pw);
} else if (tl_data->tl_data_type == KRB5_TL_LAST_PWD_CHANGE) {
unsigned char *s;
time_t t;
if (tl_data->tl_data_length != 4)
return KADM5_BAD_TL_TYPE;
s = tl_data->tl_data_contents;
t = s[0] | (s[1] << 8) | (s[2] << 16) | (s[3] << 24);
ret = hdb_entry_set_pw_change_time(context, &ent->entry, t);
} else if (tl_data->tl_data_type == KRB5_TL_EXTENSION) {
HDB_extension ext;
ret = decode_HDB_extension(tl_data->tl_data_contents,
tl_data->tl_data_length,
&ext,
NULL);
if (ret)
return KADM5_BAD_TL_TYPE;
ret = hdb_replace_extension(context, &ent->entry, &ext);
free_HDB_extension(&ext);
} else {
return KADM5_BAD_TL_TYPE;
}
return ret;
}
static void
add_pkinit_acl(krb5_context contextp, kadm5_principal_ent_rec *princ,
struct getarg_strings *strings)
{
krb5_error_code ret;
HDB_extension ext;
krb5_data buf;
size_t size = 0;
int i;
memset(&ext, 0, sizeof(ext));
ext.mandatory = FALSE;
ext.data.element = choice_HDB_extension_data_pkinit_acl;
ext.data.u.aliases.case_insensitive = 0;
if (strings->num_strings == 1 && strings->strings[0][0] == '\0') {
ext.data.u.pkinit_acl.val = NULL;
ext.data.u.pkinit_acl.len = 0;
} else {
ext.data.u.pkinit_acl.val =
calloc(strings->num_strings,
sizeof(ext.data.u.pkinit_acl.val[0]));
ext.data.u.pkinit_acl.len = strings->num_strings;
for (i = 0; i < strings->num_strings; i++) {
ext.data.u.pkinit_acl.val[i].subject = estrdup(strings->strings[i]);
}
}
ASN1_MALLOC_ENCODE(HDB_extension, buf.data, buf.length,
&ext, &size, ret);
free_HDB_extension(&ext);
if (ret)
abort();
if (buf.length != size)
abort();
add_tl(princ, KRB5_TL_EXTENSION, &buf);
}
krb5_error_code
hdb_replace_extension(krb5_context context,
hdb_entry *entry,
const HDB_extension *ext)
{
HDB_extension *ext2;
HDB_extension *es;
int ret;
ext2 = NULL;
if (entry->extensions == NULL) {
entry->extensions = calloc(1, sizeof(*entry->extensions));
if (entry->extensions == NULL) {
krb5_set_error_string(context, "malloc: out of memory");
return ENOMEM;
}
} else if (ext->data.element != choice_HDB_extension_data_asn1_ellipsis) {
ext2 = hdb_find_extension(entry, ext->data.element);
} else {
/*
* This is an unknown extention, and we are asked to replace a
* possible entry in `entry' that is of the same type. This
* might seem impossible, but ASN.1 CHOICE comes to our
* rescue. The first tag in each branch in the CHOICE is
* unique, so just find the element in the list that have the
* same tag was we are putting into the list.
*/
Der_class replace_class, list_class;
Der_type replace_type, list_type;
unsigned int replace_tag, list_tag;
size_t size;
int i;
ret = der_get_tag(ext->data.u.asn1_ellipsis.data,
ext->data.u.asn1_ellipsis.length,
&replace_class, &replace_type, &replace_tag,
&size);
if (ret) {
krb5_set_error_string(context, "hdb: failed to decode "
"replacement hdb extention");
return ret;
}
for (i = 0; i < entry->extensions->len; i++) {
HDB_extension *ext3 = &entry->extensions->val[i];
if (ext3->data.element != choice_HDB_extension_data_asn1_ellipsis)
continue;
ret = der_get_tag(ext3->data.u.asn1_ellipsis.data,
ext3->data.u.asn1_ellipsis.length,
&list_class, &list_type, &list_tag,
&size);
if (ret) {
krb5_set_error_string(context, "hdb: failed to decode "
"present hdb extention");
return ret;
}
if (MAKE_TAG(replace_class,replace_type,replace_type) ==
MAKE_TAG(list_class,list_type,list_type)) {
ext2 = ext3;
break;
}
}
}
if (ext2) {
free_HDB_extension(ext2);
ret = copy_HDB_extension(ext, ext2);
if (ret)
krb5_set_error_string(context, "hdb: failed to copy replacement "
"hdb extention");
return ret;
}
es = realloc(entry->extensions->val,
(entry->extensions->len+1)*sizeof(entry->extensions->val[0]));
if (es == NULL) {
krb5_set_error_string(context, "malloc: out of memory");
return ENOMEM;
}
entry->extensions->val = es;
ret = copy_HDB_extension(ext,
&entry->extensions->val[entry->extensions->len]);
if (ret == 0)
entry->extensions->len++;
else
krb5_set_error_string(context, "hdb: failed to copy new extension");
return ret;
}
