s4:dsdb/common: add samdb_domain_guid() helper function
[samba.git] / libgpo / pygpo.c
index c42811f94d29f31ff98618aa69949a3fe7572df1..cd107318860dc74b2c57f4dcbfdbf39c4427f58f 100644 (file)
 #include "param/pyparam.h"
 #include "gpo.h"
 #include "ads.h"
+#include "secrets.h"
+#include "../libds/common/flags.h"
+#include "librpc/rpc/pyrpc_util.h"
+#include "auth/credentials/pycredentials.h"
+#include "libcli/util/pyerrors.h"
+#include "python/py3compat.h"
 
 /* A Python C API module to use LIBGPO */
 
-#ifndef Py_RETURN_NONE
-#define Py_RETURN_NONE return Py_INCREF(Py_None), Py_None
-#endif
+#define GPO_getter(ATTR) \
+static PyObject* GPO_get_##ATTR(PyObject *self, void *closure) \
+{ \
+       struct GROUP_POLICY_OBJECT *gpo_ptr \
+               = pytalloc_get_ptr(self); \
+       \
+       if (gpo_ptr->ATTR) \
+               return PyStr_FromString(gpo_ptr->ATTR); \
+       else \
+               return Py_None; \
+}
+GPO_getter(ds_path)
+GPO_getter(file_sys_path)
+GPO_getter(display_name)
+GPO_getter(name)
+GPO_getter(link)
+GPO_getter(user_extensions)
+GPO_getter(machine_extensions)
+
+static PyGetSetDef GPO_setters[] = {
+       {discard_const_p(char, "ds_path"), (getter)GPO_get_ds_path, NULL, NULL,
+               NULL},
+       {discard_const_p(char, "file_sys_path"), (getter)GPO_get_file_sys_path,
+               NULL, NULL, NULL},
+       {discard_const_p(char, "display_name"), (getter)GPO_get_display_name,
+               NULL, NULL, NULL},
+       {discard_const_p(char, "name"), (getter)GPO_get_name, NULL, NULL,
+               NULL},
+       {discard_const_p(char, "link"), (getter)GPO_get_link, NULL, NULL,
+               NULL},
+       {discard_const_p(char, "user_extensions"),
+               (getter)GPO_get_user_extensions,
+               NULL, NULL, NULL},
+       {discard_const_p(char, "machine_extensions"),
+               (getter)GPO_get_machine_extensions, NULL, NULL, NULL},
+       {NULL}
+};
+
+static PyObject *py_gpo_get_unix_path(PyObject *self, PyObject *args,
+                                     PyObject *kwds)
+{
+       NTSTATUS status;
+       const char *cache_dir = NULL;
+       PyObject *ret = Py_None;
+       char *unix_path = NULL;
+       TALLOC_CTX *frame = NULL;
+       static const char *kwlist[] = {"cache_dir", NULL};
+       struct GROUP_POLICY_OBJECT *gpo_ptr \
+               = (struct GROUP_POLICY_OBJECT *)pytalloc_get_ptr(self);
+
+       frame = talloc_stackframe();
+
+       if (!PyArg_ParseTupleAndKeywords(args, kwds, "|s",
+                                        discard_const_p(char *, kwlist),
+                                        &cache_dir)) {
+               PyErr_SetString(PyExc_SystemError,
+                               "Failed to parse arguments to "
+                               "gpo_get_unix_path()");
+               goto out;
+       }
+
+       if (!cache_dir) {
+               cache_dir = cache_path(talloc_tos(), GPO_CACHE_DIR);
+               if (!cache_dir) {
+                       PyErr_SetString(PyExc_MemoryError,
+                                       "Failed to determine gpo cache dir");
+                       goto out;
+               }
+       }
+
+       status = gpo_get_unix_path(frame, cache_dir, gpo_ptr, &unix_path);
+
+       if (!NT_STATUS_IS_OK(status)) {
+               PyErr_SetString(PyExc_SystemError,
+                               "Failed to determine gpo unix path");
+               goto out;
+       }
+
+       ret = PyStr_FromString(unix_path);
+
+out:
+       TALLOC_FREE(frame);
+       return ret;
+}
+
+static PyMethodDef GPO_methods[] = {
+       {"get_unix_path", (PyCFunction)py_gpo_get_unix_path, METH_KEYWORDS,
+               NULL },
+       {NULL}
+};
+
+static PyTypeObject GPOType = {
+       PyVarObject_HEAD_INIT(NULL, 0)
+       .tp_name = "gpo.GROUP_POLICY_OBJECT",
+       .tp_doc = "GROUP_POLICY_OBJECT",
+       .tp_getset = GPO_setters,
+       .tp_methods = GPO_methods,
+       .tp_flags = Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE,
+};
+
+typedef struct {
+       PyObject_HEAD
+       ADS_STRUCT *ads_ptr;
+       struct cli_credentials *cli_creds;
+} ADS;
+
+static void py_ads_dealloc(ADS* self)
+{
+       ads_destroy(&(self->ads_ptr));
+       Py_TYPE(self)->tp_free((PyObject*)self);
+}
+
+static PyObject* py_ads_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
+{
+       ADS *self;
+       self = (ADS*)type->tp_alloc(type, 0);
+       return (PyObject*)self;
+}
+
+static PyObject* py_ads_connect(ADS *self);
+static int py_ads_init(ADS *self, PyObject *args, PyObject *kwds)
+{
+       const char *realm = NULL;
+       const char *workgroup = NULL;
+       const char *ldap_server = NULL;
+       PyObject *py_creds = NULL;
+       PyObject *lp_obj = NULL;
+       struct loadparm_context *lp_ctx = NULL;
+
+       static const char *kwlist[] = {
+               "ldap_server", "loadparm_context", "credentials", NULL
+       };
+       if (!PyArg_ParseTupleAndKeywords(args, kwds, "sO|O",
+                                        discard_const_p(char *, kwlist),
+                                        &ldap_server, &lp_obj, &py_creds)) {
+               return -1;
+       }
+
+       if (py_creds) {
+               if (!py_check_dcerpc_type(py_creds, "samba.credentials",
+                                         "Credentials")) {
+                       PyErr_Format(PyExc_TypeError,
+                                    "Expected samba.credentials "
+                                    "for credentials argument");
+                       return -1;
+               }
+               self->cli_creds
+                       = PyCredentials_AsCliCredentials(py_creds);
+       }
+
+       if (lp_obj) {
+               bool ok = py_check_dcerpc_type(lp_obj, "samba.param",
+                                              "LoadParm");
+               if (!ok) {
+                       PyErr_Format(PyExc_TypeError,
+                                    "Expected samba.param.LoadParm "
+                                    "for lp argument");
+                       return -1;
+               }
+               lp_ctx = pytalloc_get_type(lp_obj, struct loadparm_context);
+               if (lp_ctx == NULL) {
+                       return -1;
+               }
+               ok = lp_load_initial_only(lp_ctx->szConfigFile);
+               if (!ok) {
+                       return -1;
+               }
+       }
+
+       if (self->cli_creds) {
+               realm = cli_credentials_get_realm(self->cli_creds);
+               workgroup = cli_credentials_get_domain(self->cli_creds);
+       } else {
+               realm = lp_realm();
+               workgroup = lp_workgroup();
+       }
+
+       if (ldap_server == NULL) {
+               return -1;
+       }
+
+       self->ads_ptr = ads_init(realm, workgroup, ldap_server);
+       if (self->ads_ptr == NULL) {
+               return -1;
+       }
+
+       return 0;
+}
+
+static PyObject* py_ads_connect(ADS *self)
+{
+       ADS_STATUS status;
+       TALLOC_CTX *frame = talloc_stackframe();
+       if (self->cli_creds) {
+               self->ads_ptr->auth.user_name =
+                       SMB_STRDUP(cli_credentials_get_username(self->cli_creds));
+               self->ads_ptr->auth.flags |= ADS_AUTH_USER_CREDS;
+               self->ads_ptr->auth.password =
+                       SMB_STRDUP(cli_credentials_get_password(self->cli_creds));
+               self->ads_ptr->auth.realm =
+                       SMB_STRDUP(cli_credentials_get_realm(self->cli_creds));
+
+               status = ads_connect_user_creds(self->ads_ptr);
+               if (!ADS_ERR_OK(status)) {
+                       PyErr_SetString(PyExc_SystemError,
+                                       "ads_connect() failed");
+                       TALLOC_FREE(frame);
+                       Py_RETURN_FALSE;
+               }
+       } else {
+               char *passwd = NULL;
+               int ret = asprintf(&(self->ads_ptr->auth.user_name), "%s$",
+                                  lp_netbios_name());
+               if (ret == -1) {
+                       PyErr_SetString(PyExc_SystemError,
+                                       "Failed to asprintf");
+                       TALLOC_FREE(frame);
+                       Py_RETURN_FALSE;
+               } else {
+                       self->ads_ptr->auth.flags |= ADS_AUTH_USER_CREDS;
+               }
+
+               if (!secrets_init()) {
+                       PyErr_SetString(PyExc_SystemError,
+                                       "secrets_init() failed");
+                       TALLOC_FREE(frame);
+                       Py_RETURN_FALSE;
+               }
+
+               passwd = secrets_fetch_machine_password(self->ads_ptr->server.workgroup,
+                                                       NULL, NULL);
+               if (passwd == NULL) {
+                       PyErr_SetString(PyExc_SystemError,
+                                       "Failed to fetch the machine account "
+                                       "password");
+                       TALLOC_FREE(frame);
+                       Py_RETURN_FALSE;
+               }
+               self->ads_ptr->auth.password = smb_xstrdup(passwd);
+               SAFE_FREE(passwd);
+               self->ads_ptr->auth.realm =
+                       smb_xstrdup(self->ads_ptr->server.realm);
+               if (!strupper_m(self->ads_ptr->auth.realm)) {
+                       PyErr_SetString(PyExc_SystemError, "Failed to strdup");
+                       TALLOC_FREE(frame);
+                       Py_RETURN_FALSE;
+               }
+
+               status = ads_connect(self->ads_ptr);
+               if (!ADS_ERR_OK(status)) {
+                       PyErr_SetString(PyExc_SystemError,
+                                       "ads_connect() failed");
+                       TALLOC_FREE(frame);
+                       Py_RETURN_FALSE;
+               }
+       }
+
+       TALLOC_FREE(frame);
+       Py_RETURN_TRUE;
+}
 
 /* Parameter mapping and functions for the GP_EXT struct */
 void initgpo(void);
 
 /* Global methods aka do not need a special pyobject type */
-static PyObject *py_gpo_get_sysvol_gpt_version(PyObject * self, PyObject * args)
+static PyObject *py_gpo_get_sysvol_gpt_version(PyObject * self,
+                                              PyObject * args)
 {
        TALLOC_CTX *tmp_ctx = NULL;
        char *unix_path;
        char *display_name = NULL;
        uint32_t sysvol_version = 0;
        PyObject *result;
+       NTSTATUS status;
 
        tmp_ctx = talloc_new(NULL);
 
        if (!PyArg_ParseTuple(args, "s", &unix_path)) {
                return NULL;
        }
-       gpo_get_sysvol_gpt_version(tmp_ctx, unix_path, &sysvol_version, &display_name);
+       status = gpo_get_sysvol_gpt_version(tmp_ctx, unix_path,
+                                           &sysvol_version,
+                                           &display_name);
+       if (!NT_STATUS_IS_OK(status)) {
+               PyErr_SetNTSTATUS(status);
+               TALLOC_FREE(tmp_ctx);
+               return NULL;
+       }
+
        talloc_free(tmp_ctx);
        result = Py_BuildValue("[s,i]", display_name, sysvol_version);
        return result;
 }
 
+#ifdef HAVE_ADS
+static ADS_STATUS find_samaccount(ADS_STRUCT *ads, TALLOC_CTX *mem_ctx,
+                                 const char *samaccountname,
+                                 uint32_t *uac_ret, const char **dn_ret)
+{
+       ADS_STATUS status;
+       const char *attrs[] = { "userAccountControl", NULL };
+       const char *filter;
+       LDAPMessage *res = NULL;
+       char *dn = NULL;
+       uint32_t uac = 0;
+
+       filter = talloc_asprintf(mem_ctx, "(sAMAccountName=%s)",
+                                samaccountname);
+       if (filter == NULL) {
+               status = ADS_ERROR_NT(NT_STATUS_NO_MEMORY);
+               goto out;
+       }
+
+       status = ads_do_search_all(ads, ads->config.bind_path,
+                                  LDAP_SCOPE_SUBTREE, filter, attrs, &res);
+
+       if (!ADS_ERR_OK(status)) {
+               goto out;
+       }
+
+       if (ads_count_replies(ads, res) != 1) {
+               status = ADS_ERROR(LDAP_NO_RESULTS_RETURNED);
+               goto out;
+       }
+
+       dn = ads_get_dn(ads, talloc_tos(), res);
+       if (dn == NULL) {
+               status = ADS_ERROR(LDAP_NO_MEMORY);
+               goto out;
+       }
+
+       if (!ads_pull_uint32(ads, res, "userAccountControl", &uac)) {
+               status = ADS_ERROR(LDAP_NO_SUCH_ATTRIBUTE);
+               goto out;
+       }
+
+       if (uac_ret) {
+               *uac_ret = uac;
+       }
+
+       if (dn_ret) {
+               *dn_ret = talloc_strdup(mem_ctx, dn);
+               if (*dn_ret == NULL) {
+                       status = ADS_ERROR(LDAP_NO_MEMORY);
+                       goto out;
+               }
+       }
+out:
+       TALLOC_FREE(dn);
+       ads_msgfree(ads, res);
+
+       return status;
+}
+
+static PyObject *py_ads_get_gpo_list(ADS *self, PyObject *args, PyObject *kwds)
+{
+       TALLOC_CTX *frame = NULL;
+       struct GROUP_POLICY_OBJECT *gpo = NULL, *gpo_list = NULL;
+       ADS_STATUS status;
+       const char *samaccountname = NULL;
+       const char *dn = NULL;
+       uint32_t uac = 0;
+       uint32_t flags = 0;
+       struct security_token *token = NULL;
+       PyObject *ret = Py_None;
+       TALLOC_CTX *gpo_ctx;
+       size_t list_size;
+       size_t i;
+
+       static const char *kwlist[] = {"samaccountname", NULL};
+       if (!PyArg_ParseTupleAndKeywords(args, kwds, "s",
+                                        discard_const_p(char *, kwlist),
+                                        &samaccountname)) {
+               PyErr_SetString(PyExc_SystemError,
+                               "Failed to parse arguments to "
+                               "py_ads_get_gpo_list()");
+               goto out;
+       }
+
+       frame = talloc_stackframe();
+
+       status = find_samaccount(self->ads_ptr, frame,
+                                samaccountname, &uac, &dn);
+       if (!ADS_ERR_OK(status)) {
+               TALLOC_FREE(frame);
+               PyErr_SetString(PyExc_SystemError,
+                               "Failed to find samAccountName");
+               goto out;
+       }
+
+       if (uac & UF_WORKSTATION_TRUST_ACCOUNT ||
+           uac & UF_SERVER_TRUST_ACCOUNT) {
+               flags |= GPO_LIST_FLAG_MACHINE;
+               status = gp_get_machine_token(self->ads_ptr, frame, dn,
+                                             &token);
+       } else {
+               status = ads_get_sid_token(self->ads_ptr, frame, dn, &token);
+       }
+       if (!ADS_ERR_OK(status)) {
+               TALLOC_FREE(frame);
+               PyErr_SetString(PyExc_SystemError, "Failed to get token");
+               goto out;
+       }
+
+       gpo_ctx = talloc_new(frame);
+       status = ads_get_gpo_list(self->ads_ptr, gpo_ctx, dn, flags, token,
+                                 &gpo_list);
+       if (!ADS_ERR_OK(status)) {
+               TALLOC_FREE(frame);
+               PyErr_SetString(PyExc_SystemError, "Failed to fetch GPO list");
+               goto out;
+       }
+
+       /* Convert the C linked list into a python list */
+       list_size = 0;
+       for (gpo = gpo_list; gpo != NULL; gpo = gpo->next) {
+               list_size++;
+       }
+
+       i = 0;
+       ret = PyList_New(list_size);
+       if (ret == NULL) {
+               TALLOC_FREE(frame);
+               goto out;
+       }
+
+       for (gpo = gpo_list; gpo != NULL; gpo = gpo->next) {
+               PyObject *obj = pytalloc_reference_ex(&GPOType,
+                                                     gpo_ctx, gpo);
+               if (obj == NULL) {
+                       TALLOC_FREE(frame);
+                       goto out;
+               }
+
+               PyList_SetItem(ret, i, obj);
+               i++;
+       }
+
+out:
+
+       TALLOC_FREE(frame);
+       return ret;
+}
+
+#endif
+
+static PyMethodDef ADS_methods[] = {
+       { "connect", (PyCFunction)py_ads_connect, METH_NOARGS,
+               "Connect to the LDAP server" },
+#ifdef HAVE_ADS
+       { "get_gpo_list", (PyCFunction)py_ads_get_gpo_list, METH_VARARGS | METH_KEYWORDS,
+               NULL },
+#endif
+       { NULL }
+};
+
+static PyTypeObject ads_ADSType = {
+       .tp_name = "gpo.ADS_STRUCT",
+       .tp_basicsize = sizeof(ADS),
+       .tp_dealloc = (destructor)py_ads_dealloc,
+       .tp_flags = Py_TPFLAGS_DEFAULT,
+       .tp_doc = "ADS struct",
+       .tp_methods = ADS_methods,
+       .tp_init = (initproc)py_ads_init,
+       .tp_new = py_ads_new,
+};
+
 static PyMethodDef py_gpo_methods[] = {
-       {"gpo_get_sysvol_gpt_version", (PyCFunction) py_gpo_get_sysvol_gpt_version, METH_VARARGS, NULL},
+       {"gpo_get_sysvol_gpt_version",
+               (PyCFunction)py_gpo_get_sysvol_gpt_version,
+               METH_VARARGS, NULL},
        {NULL}
 };
 
+static struct PyModuleDef moduledef = {
+       PyModuleDef_HEAD_INIT,
+       .m_name = "gpo",
+       .m_doc = "libgpo python bindings",
+       .m_size = -1,
+       .m_methods = py_gpo_methods,
+};
+
 /* Will be called by python when loading this module */
-void initgpo(void)
+void initgpo(void);
+
+MODULE_INIT_FUNC(gpo)
 {
        PyObject *m;
 
        debug_setup_talloc_log();
+
        /* Instantiate the types */
-       m = Py_InitModule3("gpo", py_gpo_methods, "libgpo python bindings");
-       if (m == NULL)
-               return;
-       PyModule_AddObject(m, "version", PyString_FromString(SAMBA_VERSION_STRING));
+       m = PyModule_Create(&moduledef);
+       if (m == NULL) {
+               return m;
+       }
+
+       PyModule_AddObject(m, "version",
+                          PyStr_FromString(SAMBA_VERSION_STRING));
+
+       if (PyType_Ready(&ads_ADSType) < 0) {
+               return m;
+       }
+
+       PyModule_AddObject(m, "ADS_STRUCT", (PyObject *)&ads_ADSType);
+
+       if (pytalloc_BaseObject_PyType_Ready(&GPOType) < 0) {
+               return m;
+       }
+
+       Py_INCREF((PyObject *)(void *)&GPOType);
+       PyModule_AddObject(m, "GROUP_POLICY_OBJECT",
+                          (PyObject *)&GPOType);
+       return m;
+
 }