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-rw-r--r--source4/kdc/pac-glue.c58
-rw-r--r--source4/kdc/pac-glue.h10
-rw-r--r--source4/kdc/wdc-samba4.c131
3 files changed, 129 insertions, 70 deletions
diff --git a/source4/kdc/pac-glue.c b/source4/kdc/pac-glue.c
index 85121d40ef..a311777f2b 100644
--- a/source4/kdc/pac-glue.c
+++ b/source4/kdc/pac-glue.c
@@ -182,8 +182,9 @@ NTSTATUS samba_kdc_update_pac_blob(TALLOC_CTX *mem_ctx,
return nt_status;
}
-void samba_kdc_build_edata_reply(TALLOC_CTX *tmp_ctx, krb5_data *e_data,
- NTSTATUS nt_status)
+/* this function allocates 'data' using malloc.
+ * The caller is responsible for freeing it */
+void samba_kdc_build_edata_reply(NTSTATUS nt_status, DATA_BLOB *e_data)
{
PA_DATA pa;
unsigned char *buf;
@@ -215,3 +216,56 @@ void samba_kdc_build_edata_reply(TALLOC_CTX *tmp_ctx, krb5_data *e_data,
return;
}
+/* function to map policy errors */
+krb5_error_code samba_kdc_map_policy_err(NTSTATUS nt_status)
+{
+ krb5_error_code ret;
+
+ if (NT_STATUS_EQUAL(nt_status, NT_STATUS_PASSWORD_MUST_CHANGE))
+ ret = KRB5KDC_ERR_KEY_EXPIRED;
+ else if (NT_STATUS_EQUAL(nt_status, NT_STATUS_PASSWORD_EXPIRED))
+ ret = KRB5KDC_ERR_KEY_EXPIRED;
+ else if (NT_STATUS_EQUAL(nt_status, NT_STATUS_ACCOUNT_EXPIRED))
+ ret = KRB5KDC_ERR_CLIENT_REVOKED;
+ else if (NT_STATUS_EQUAL(nt_status, NT_STATUS_ACCOUNT_DISABLED))
+ ret = KRB5KDC_ERR_CLIENT_REVOKED;
+ else if (NT_STATUS_EQUAL(nt_status, NT_STATUS_INVALID_LOGON_HOURS))
+ ret = KRB5KDC_ERR_CLIENT_REVOKED;
+ else if (NT_STATUS_EQUAL(nt_status, NT_STATUS_ACCOUNT_LOCKED_OUT))
+ ret = KRB5KDC_ERR_CLIENT_REVOKED;
+ else if (NT_STATUS_EQUAL(nt_status, NT_STATUS_INVALID_WORKSTATION))
+ ret = KRB5KDC_ERR_POLICY;
+ else
+ ret = KRB5KDC_ERR_POLICY;
+
+ return ret;
+}
+
+/* Given a kdc entry, consult the account_ok routine in auth/auth_sam.c
+ * for consistency */
+NTSTATUS samba_kdc_check_client_access(struct samba_kdc_entry *kdc_entry,
+ const char *client_name,
+ const char *workstation,
+ bool password_change)
+{
+ TALLOC_CTX *tmp_ctx;
+ NTSTATUS nt_status;
+
+ tmp_ctx = talloc_named(NULL, 0, "samba_kdc_check_client_access");
+ if (!tmp_ctx) {
+ return NT_STATUS_NO_MEMORY;
+ }
+
+ /* we allow all kinds of trusts here */
+ nt_status = authsam_account_ok(tmp_ctx,
+ kdc_entry->kdc_db_ctx->samdb,
+ MSV1_0_ALLOW_SERVER_TRUST_ACCOUNT |
+ MSV1_0_ALLOW_WORKSTATION_TRUST_ACCOUNT,
+ kdc_entry->realm_dn, kdc_entry->msg,
+ workstation, client_name,
+ true, password_change);
+
+ talloc_free(tmp_ctx);
+ return nt_status;
+}
+
diff --git a/source4/kdc/pac-glue.h b/source4/kdc/pac-glue.h
index 5cc123f7ce..22f52058f8 100644
--- a/source4/kdc/pac-glue.h
+++ b/source4/kdc/pac-glue.h
@@ -42,5 +42,11 @@ NTSTATUS samba_kdc_update_pac_blob(TALLOC_CTX *mem_ctx,
struct smb_iconv_convenience *ic,
krb5_pac *pac, DATA_BLOB *pac_blob);
-void samba_kdc_build_edata_reply(TALLOC_CTX *tmp_ctx, krb5_data *e_data,
- NTSTATUS nt_status);
+void samba_kdc_build_edata_reply(NTSTATUS nt_status, DATA_BLOB *e_data);
+
+krb5_error_code samba_kdc_map_policy_err(NTSTATUS nt_status);
+
+NTSTATUS samba_kdc_check_client_access(struct samba_kdc_entry *kdc_entry,
+ const char *client_name,
+ const char *workstation,
+ bool password_change);
diff --git a/source4/kdc/wdc-samba4.c b/source4/kdc/wdc-samba4.c
index 6be0de718e..01ea9efcd0 100644
--- a/source4/kdc/wdc-samba4.c
+++ b/source4/kdc/wdc-samba4.c
@@ -103,8 +103,46 @@ static krb5_error_code samba_wdc_reget_pac(void *priv, krb5_context context,
return ret;
}
-/* Given an hdb entry (and in particular it's private member), consult
- * the account_ok routine in auth/auth_sam.c for consistancy */
+static char *get_netbios_name(TALLOC_CTX *mem_ctx, HostAddresses *addrs)
+{
+ char *nb_name = NULL;
+ int len, i;
+
+ for (i = 0; addrs && i < addrs->len; i++) {
+ if (addrs->val[i].addr_type != KRB5_ADDRESS_NETBIOS) {
+ continue;
+ }
+ len = MIN(addrs->val[i].address.length, 15);
+ nb_name = talloc_strndup(mem_ctx,
+ addrs->val[i].address.data, len);
+ if (nb_name) {
+ break;
+ }
+ }
+
+ if (nb_name == NULL) {
+ return NULL;
+ }
+
+ /* Strip space padding */
+ i = strlen(nb_name) - 1;
+ while (i > 0 && nb_name[i] == ' ') {
+ nb_name[i] = '\0';
+ }
+
+ return nb_name;
+}
+
+static krb5_data fill_krb5_data(void *data, size_t length)
+{
+ krb5_data kdata;
+
+ kdata.data = data;
+ kdata.length = length;
+
+ return kdata;
+}
+
static krb5_error_code samba_wdc_check_client_access(void *priv,
krb5_context context,
krb5_kdc_configuration *config,
@@ -113,80 +151,41 @@ static krb5_error_code samba_wdc_check_client_access(void *priv,
KDC_REQ *req,
krb5_data *e_data)
{
- krb5_error_code ret;
- NTSTATUS nt_status;
- TALLOC_CTX *tmp_ctx;
- struct samba_kdc_entry *p;
- char *workstation = NULL;
- HostAddresses *addresses = req->req_body.addresses;
- int i;
+ struct samba_kdc_entry *kdc_entry;
bool password_change;
+ char *workstation;
+ NTSTATUS nt_status;
- tmp_ctx = talloc_new(client_ex->ctx);
- p = talloc_get_type(client_ex->ctx, struct samba_kdc_entry);
+ kdc_entry = talloc_get_type(client_ex->ctx, struct samba_kdc_entry);
+ password_change = (server_ex && server_ex->entry.flags.change_pw);
+ workstation = get_netbios_name((TALLOC_CTX *)client_ex->ctx,
+ req->req_body.addresses);
- if (!tmp_ctx) {
- return ENOMEM;
- }
+ nt_status = samba_kdc_check_client_access(kdc_entry,
+ client_name,
+ workstation,
+ password_change);
- if (addresses) {
- for (i=0; i < addresses->len; i++) {
- if (addresses->val[i].addr_type == KRB5_ADDRESS_NETBIOS) {
- workstation = talloc_strndup(tmp_ctx, addresses->val[i].address.data, MIN(addresses->val[i].address.length, 15));
- if (workstation) {
- break;
- }
- }
+ if (!NT_STATUS_IS_OK(nt_status)) {
+ if (NT_STATUS_EQUAL(nt_status, NT_STATUS_NO_MEMORY)) {
+ return ENOMEM;
}
- }
- /* Strip space padding */
- if (workstation) {
- i = MIN(strlen(workstation), 15);
- for (; i > 0 && workstation[i - 1] == ' '; i--) {
- workstation[i - 1] = '\0';
- }
- }
+ if (e_data) {
+ DATA_BLOB data;
- password_change = (server_ex && server_ex->entry.flags.change_pw);
+ samba_kdc_build_edata_reply(nt_status, &data);
+ *e_data = fill_krb5_data(data.data, data.length);
+ }
- /* we allow all kinds of trusts here */
- nt_status = authsam_account_ok(tmp_ctx,
- p->kdc_db_ctx->samdb,
- MSV1_0_ALLOW_SERVER_TRUST_ACCOUNT | MSV1_0_ALLOW_WORKSTATION_TRUST_ACCOUNT,
- p->realm_dn,
- p->msg,
- workstation,
- client_name, true, password_change);
-
- if (NT_STATUS_IS_OK(nt_status)) {
- /* Now do the standard Heimdal check */
- ret = kdc_check_flags(context, config,
- client_ex, client_name,
- server_ex, server_name,
- req->msg_type == krb_as_req);
- } else {
- if (NT_STATUS_EQUAL(nt_status, NT_STATUS_PASSWORD_MUST_CHANGE))
- ret = KRB5KDC_ERR_KEY_EXPIRED;
- else if (NT_STATUS_EQUAL(nt_status, NT_STATUS_PASSWORD_EXPIRED))
- ret = KRB5KDC_ERR_KEY_EXPIRED;
- else if (NT_STATUS_EQUAL(nt_status, NT_STATUS_ACCOUNT_EXPIRED))
- ret = KRB5KDC_ERR_CLIENT_REVOKED;
- else if (NT_STATUS_EQUAL(nt_status, NT_STATUS_ACCOUNT_DISABLED))
- ret = KRB5KDC_ERR_CLIENT_REVOKED;
- else if (NT_STATUS_EQUAL(nt_status, NT_STATUS_INVALID_LOGON_HOURS))
- ret = KRB5KDC_ERR_CLIENT_REVOKED;
- else if (NT_STATUS_EQUAL(nt_status, NT_STATUS_ACCOUNT_LOCKED_OUT))
- ret = KRB5KDC_ERR_CLIENT_REVOKED;
- else if (NT_STATUS_EQUAL(nt_status, NT_STATUS_INVALID_WORKSTATION))
- ret = KRB5KDC_ERR_POLICY;
- else
- ret = KRB5KDC_ERR_POLICY;
-
- samba_kdc_build_edata_reply(tmp_ctx, e_data, nt_status);
+ return samba_kdc_map_policy_err(nt_status);
}
- return ret;
+ /* Now do the standard Heimdal check */
+ return kdc_check_flags(context, config,
+ client_ex, client_name,
+ server_ex, server_name,
+ req->msg_type == krb_as_req);
}
static krb5_error_code samba_wdc_plugin_init(krb5_context context, void **ptr)
generated by cgit (git 2.34.1) at 2024-12-23 01:06:41 +0000