#include "hdb_locl.h"
#include <der.h>
krb5_error_code
hdb_entry_check_mandatory(krb5_context context, const hdb_entry *ent)
{
size_t i;
if (ent->extensions == NULL)
return 0;
for (i = 0; i < ent->extensions->len; i++) {
if (ent->extensions->val[i].data.element !=
choice_HDB_extension_data_asn1_ellipsis)
continue;
if (ent->extensions->val[i].mandatory) {
krb5_set_error_message(context, HDB_ERR_MANDATORY_OPTION,
"Principal have unknown "
"mandatory extension");
return HDB_ERR_MANDATORY_OPTION;
}
}
return 0;
}
HDB_extension *
hdb_find_extension(const hdb_entry *entry, int type)
{
size_t i;
if (entry->extensions == NULL)
return NULL;
for (i = 0; i < entry->extensions->len; i++)
if (entry->extensions->val[i].data.element == (unsigned)type)
return &entry->extensions->val[i];
return NULL;
}
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_message(context, ENOMEM, "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 {
Der_class replace_class, list_class;
Der_type replace_type, list_type;
unsigned int replace_tag, list_tag;
size_t size;
size_t 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_message(context, ret, "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_message(context, ret, "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_message(context, ret, "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_message(context, ENOMEM, "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_message(context, ret, "hdb: failed to copy new extension");
return ret;
}
krb5_error_code
hdb_clear_extension(krb5_context context,
hdb_entry *entry,
int type)
{
size_t i;
if (entry->extensions == NULL)
return 0;
for (i = 0; i < entry->extensions->len; i++) {
if (entry->extensions->val[i].data.element == (unsigned)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;
}
krb5_error_code
hdb_entry_get_pkinit_acl(const hdb_entry *entry, const HDB_Ext_PKINIT_acl **a)
{
const HDB_extension *ext;
ext = hdb_find_extension(entry, choice_HDB_extension_data_pkinit_acl);
if (ext)
*a = &ext->data.u.pkinit_acl;
else
*a = NULL;
return 0;
}
krb5_error_code
hdb_entry_set_pkinit_acl(hdb_entry *entry,
const char *subject,
const char *issuer,
const char *anchor)
{
HDB_extension *ext;
HDB_Ext_PKINIT_acl *a;
void *ptr;
ext = hdb_find_extension(entry, choice_HDB_extension_data_pkinit_acl);
if (ext == NULL) {
if (entry->extensions == NULL) {
entry->extensions = calloc(1, sizeof(*entry->extensions));
if (entry->extensions == NULL)
return ENOMEM;
}
ptr = realloc(entry->extensions->val,
(entry->extensions->len + 1) *
sizeof(entry->extensions->val[0]));
if (ptr == NULL)
return ENOMEM;
entry->extensions->val = ptr;
memset(&entry->extensions->val[entry->extensions->len], 0,
sizeof(entry->extensions->val[0]));
entry->extensions->val[entry->extensions->len].data.element =
choice_HDB_extension_data_pkinit_acl;
a = &entry->extensions->val[entry->extensions->len].data.u.pkinit_acl;
entry->extensions->len++;
} else {
a = &ext->data.u.pkinit_acl;
}
ptr = realloc(a->val, (a->len + 1) * sizeof(a->val[0]));
if (ptr == NULL)
return ENOMEM;
a->val = ptr;
memset(&a->val[a->len], 0, sizeof(a->val[0]));
a->val[a->len].subject = strdup(subject);
if (issuer) {
a->val[a->len].issuer = malloc(sizeof(a->val[a->len].subject));
*(a->val[a->len].issuer) = strdup(issuer);
}
if (anchor) {
a->val[a->len].anchor = malloc(sizeof(a->val[a->len].anchor));
*(a->val[a->len].anchor) = strdup(anchor);
}
a->len++;
return 0;
}
krb5_error_code
hdb_entry_get_pkinit_hash(const hdb_entry *entry, const HDB_Ext_PKINIT_hash **a)
{
const HDB_extension *ext;
ext = hdb_find_extension(entry, choice_HDB_extension_data_pkinit_cert_hash);
if (ext)
*a = &ext->data.u.pkinit_cert_hash;
else
*a = NULL;
return 0;
}
krb5_error_code
hdb_entry_get_pkinit_cert(const hdb_entry *entry, const HDB_Ext_PKINIT_cert **a)
{
const HDB_extension *ext;
ext = hdb_find_extension(entry, choice_HDB_extension_data_pkinit_cert);
if (ext)
*a = &ext->data.u.pkinit_cert;
else
*a = NULL;
return 0;
}
krb5_error_code
hdb_entry_get_pw_change_time(const hdb_entry *entry, time_t *t)
{
const HDB_extension *ext;
ext = hdb_find_extension(entry, choice_HDB_extension_data_last_pw_change);
if (ext)
*t = ext->data.u.last_pw_change;
else
*t = 0;
return 0;
}
krb5_error_code
hdb_entry_set_pw_change_time(krb5_context context,
hdb_entry *entry,
time_t t)
{
HDB_extension ext;
ext.mandatory = FALSE;
ext.data.element = choice_HDB_extension_data_last_pw_change;
if (t == 0)
t = time(NULL);
ext.data.u.last_pw_change = t;
return hdb_replace_extension(context, entry, &ext);
}
int
hdb_entry_get_password(krb5_context context, HDB *db,
const hdb_entry *entry, char **p)
{
heim_utf8_string str;
heim_octet_string pw;
HDB_extension *ext;
int ret;
*p = NULL;
ext = hdb_find_extension(entry, choice_HDB_extension_data_password);
if (ext == NULL)
return 0;
if (db->hdb_master_key_set && ext->data.u.password.mkvno) {
hdb_master_key key;
key = _hdb_find_master_key(ext->data.u.password.mkvno,
db->hdb_master_key);
if (key == NULL) {
krb5_set_error_message(context, HDB_ERR_NO_MKEY,
"master key %d missing",
*ext->data.u.password.mkvno);
return HDB_ERR_NO_MKEY;
}
ret = _hdb_mkey_decrypt(context, key, HDB_KU_MKEY,
ext->data.u.password.password.data,
ext->data.u.password.password.length,
&pw);
} else {
ret = der_copy_octet_string(&ext->data.u.password.password, &pw);
}
if (ret) {
krb5_clear_error_message(context);
return ret;
}
str = pw.data;
if (str[pw.length - 1] != '\0') {
krb5_set_error_message(context, EINVAL, "malformed password");
return EINVAL;
}
*p = strdup(str);
der_free_octet_string(&pw);
if (*p == NULL) {
krb5_set_error_message(context, ENOMEM, "malloc: out of memory");
return ENOMEM;
}
return 0;
}
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;
}
int
hdb_entry_clear_password(krb5_context context, hdb_entry *entry)
{
return hdb_clear_extension(context, entry,
choice_HDB_extension_data_password);
}
krb5_error_code
hdb_entry_get_ConstrainedDelegACL(const hdb_entry *entry,
const HDB_Ext_Constrained_delegation_acl **a)
{
const HDB_extension *ext;
ext = hdb_find_extension(entry,
choice_HDB_extension_data_allowed_to_delegate_to);
if (ext)
*a = &ext->data.u.allowed_to_delegate_to;
else
*a = NULL;
return 0;
}
krb5_error_code
hdb_entry_get_aliases(const hdb_entry *entry, const HDB_Ext_Aliases **a)
{
const HDB_extension *ext;
ext = hdb_find_extension(entry, choice_HDB_extension_data_aliases);
if (ext)
*a = &ext->data.u.aliases;
else
*a = NULL;
return 0;
}
unsigned int
hdb_entry_get_kvno_diff_clnt(const hdb_entry *entry)
{
const HDB_extension *ext;
ext = hdb_find_extension(entry,
choice_HDB_extension_data_hist_kvno_diff_clnt);
if (ext)
return ext->data.u.hist_kvno_diff_clnt;
return 1;
}
krb5_error_code
hdb_entry_set_kvno_diff_clnt(krb5_context context, hdb_entry *entry,
unsigned int diff)
{
HDB_extension ext;
if (diff > 16384)
return EINVAL;
ext.data.element = choice_HDB_extension_data_hist_kvno_diff_clnt;
ext.data.u.hist_kvno_diff_clnt = diff;
return hdb_replace_extension(context, entry, &ext);
}
krb5_error_code
hdb_entry_clear_kvno_diff_clnt(krb5_context context, hdb_entry *entry)
{
return hdb_clear_extension(context, entry,
choice_HDB_extension_data_hist_kvno_diff_clnt);
}
unsigned int
hdb_entry_get_kvno_diff_svc(const hdb_entry *entry)
{
const HDB_extension *ext;
ext = hdb_find_extension(entry,
choice_HDB_extension_data_hist_kvno_diff_svc);
if (ext)
return ext->data.u.hist_kvno_diff_svc;
return 1024;
}
krb5_error_code
hdb_entry_set_kvno_diff_svc(krb5_context context, hdb_entry *entry,
unsigned int diff)
{
HDB_extension ext;
if (diff > 16384)
return EINVAL;
ext.data.element = choice_HDB_extension_data_hist_kvno_diff_svc;
ext.data.u.hist_kvno_diff_svc = diff;
return hdb_replace_extension(context, entry, &ext);
}
krb5_error_code
hdb_entry_clear_kvno_diff_svc(krb5_context context, hdb_entry *entry)
{
return hdb_clear_extension(context, entry,
choice_HDB_extension_data_hist_kvno_diff_svc);
}