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samba-mirror/source4/libnet/py_net.c
Andrew Tridgell e18c0030e0 s4-pyjoin: fill in the dns name in the python replication method
this is needed to get the repsFrom DNS entry right

Pair-Programmed-With: Andrew Bartlett <abartlet@samba.org>
2010-09-16 07:24:01 +10:00

605 lines
18 KiB
C

/*
Unix SMB/CIFS implementation.
Samba utility functions
Copyright (C) Jelmer Vernooij <jelmer@samba.org> 2008-2010
Copyright (C) Kamen Mazdrashki <kamen.mazdrashki@postpath.com> 2009
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <Python.h>
#include "includes.h"
#include "libnet.h"
#include "auth/credentials/pycredentials.h"
#include "libcli/security/security.h"
#include "lib/events/events.h"
#include "param/param.h"
#include "param/pyparam.h"
#include "lib/ldb/pyldb.h"
#include "auth/gensec/gensec.h"
#include "librpc/rpc/pyrpc.h"
#include "librpc/rpc/pyrpc_util.h"
#include "lib/messaging/messaging.h"
#include "libcli/finddc.h"
#include "libcli/resolve/resolve.h"
typedef struct {
PyObject_HEAD
TALLOC_CTX *mem_ctx;
struct libnet_context *libnet_ctx;
struct tevent_context *ev;
} py_net_Object;
static PyObject *py_net_join(py_net_Object *self, PyObject *args, PyObject *kwargs)
{
struct libnet_Join r;
NTSTATUS status;
PyObject *result;
TALLOC_CTX *mem_ctx;
const char *kwnames[] = { "domain_name", "netbios_name", "join_type", "level", NULL };
if (!PyArg_ParseTupleAndKeywords(args, kwargs, "ssii:Join", discard_const_p(char *, kwnames),
&r.in.domain_name, &r.in.netbios_name,
&r.in.join_type, &r.in.level))
return NULL;
mem_ctx = talloc_new(self->mem_ctx);
status = libnet_Join(self->libnet_ctx, mem_ctx, &r);
if (NT_STATUS_IS_ERR(status)) {
PyErr_SetString(PyExc_RuntimeError, r.out.error_string?r.out.error_string:nt_errstr(status));
talloc_free(mem_ctx);
return NULL;
}
result = Py_BuildValue("sss", r.out.join_password,
dom_sid_string(mem_ctx, r.out.domain_sid),
r.out.domain_name);
talloc_free(mem_ctx);
return result;
}
static const char py_net_join_doc[] = "join(domain_name, netbios_name, join_type, level) -> (join_password, domain_sid, domain_name)\n\n" \
"Join the domain with the specified name.";
static PyObject *py_net_set_password(py_net_Object *self, PyObject *args, PyObject *kwargs)
{
union libnet_SetPassword r;
NTSTATUS status;
PyObject *py_creds;
TALLOC_CTX *mem_ctx;
struct tevent_context *ev;
const char *kwnames[] = { "account_name", "domain_name", "newpassword", "credentials", NULL };
r.generic.level = LIBNET_SET_PASSWORD_GENERIC;
if (!PyArg_ParseTupleAndKeywords(args, kwargs, "sssO:set_password", discard_const_p(char *, kwnames),
&r.generic.in.account_name, &r.generic.in.domain_name,
&r.generic.in.newpassword, &py_creds)) {
return NULL;
}
/* FIXME: we really need to get a context from the caller or we may end
* up with 2 event contexts */
ev = s4_event_context_init(NULL);
mem_ctx = talloc_new(ev);
status = libnet_SetPassword(self->libnet_ctx, mem_ctx, &r);
if (NT_STATUS_IS_ERR(status)) {
PyErr_SetString(PyExc_RuntimeError,
r.generic.out.error_string?r.generic.out.error_string:nt_errstr(status));
talloc_free(mem_ctx);
return NULL;
}
talloc_free(mem_ctx);
Py_RETURN_NONE;
}
static const char py_net_set_password_doc[] = "set_password(account_name, domain_name, newpassword) -> True\n\n" \
"Set password for a user. You must supply credential with enough rights to do this.\n\n" \
"Sample usage is:\n" \
"net.set_password(account_name=<account_name>,\n" \
" domain_name=domain_name,\n" \
" newpassword=new_pass)\n";
static PyObject *py_net_export_keytab(py_net_Object *self, PyObject *args, PyObject *kwargs)
{
struct libnet_export_keytab r;
TALLOC_CTX *mem_ctx;
const char *kwnames[] = { "keytab", NULL };
NTSTATUS status;
if (!PyArg_ParseTupleAndKeywords(args, kwargs, "s:export_keytab", discard_const_p(char *, kwnames),
&r.in.keytab_name)) {
return NULL;
}
mem_ctx = talloc_new(self->mem_ctx);
status = libnet_export_keytab(self->libnet_ctx, mem_ctx, &r);
if (NT_STATUS_IS_ERR(status)) {
PyErr_SetString(PyExc_RuntimeError,
r.out.error_string?r.out.error_string:nt_errstr(status));
talloc_free(mem_ctx);
return NULL;
}
talloc_free(mem_ctx);
Py_RETURN_NONE;
}
static const char py_net_export_keytab_doc[] = "export_keytab(keytab, name)\n\n"
"Export the DC keytab to a keytab file.";
static PyObject *py_net_time(py_net_Object *self, PyObject *args, PyObject *kwargs)
{
const char *kwnames[] = { "server_name", NULL };
union libnet_RemoteTOD r;
NTSTATUS status;
TALLOC_CTX *mem_ctx;
char timestr[64];
PyObject *ret;
struct tm *tm;
if (!PyArg_ParseTupleAndKeywords(args, kwargs, "s",
discard_const_p(char *, kwnames), &r.generic.in.server_name))
return NULL;
r.generic.level = LIBNET_REMOTE_TOD_GENERIC;
mem_ctx = talloc_new(NULL);
if (mem_ctx == NULL) {
PyErr_NoMemory();
return NULL;
}
status = libnet_RemoteTOD(self->libnet_ctx, mem_ctx, &r);
if (!NT_STATUS_IS_OK(status)) {
PyErr_SetString(PyExc_RuntimeError,
r.generic.out.error_string?r.generic.out.error_string:nt_errstr(status));
talloc_free(mem_ctx);
return NULL;
}
ZERO_STRUCT(timestr);
tm = localtime(&r.generic.out.time);
strftime(timestr, sizeof(timestr)-1, "%c %Z",tm);
ret = PyString_FromString(timestr);
talloc_free(mem_ctx);
return ret;
}
static const char py_net_time_doc[] = "time(server_name) -> timestr\n"
"Retrieve the remote time on a server";
static PyObject *py_net_user_create(py_net_Object *self, PyObject *args, PyObject *kwargs)
{
const char *kwnames[] = { "username", NULL };
NTSTATUS status;
TALLOC_CTX *mem_ctx;
struct libnet_CreateUser r;
if (!PyArg_ParseTupleAndKeywords(args, kwargs, "s", discard_const_p(char *, kwnames),
&r.in.user_name))
return NULL;
r.in.domain_name = cli_credentials_get_domain(self->libnet_ctx->cred);
mem_ctx = talloc_new(NULL);
if (mem_ctx == NULL) {
PyErr_NoMemory();
return NULL;
}
status = libnet_CreateUser(self->libnet_ctx, mem_ctx, &r);
if (!NT_STATUS_IS_OK(status)) {
PyErr_SetString(PyExc_RuntimeError, r.out.error_string?r.out.error_string:nt_errstr(status));
talloc_free(mem_ctx);
return NULL;
}
talloc_free(mem_ctx);
Py_RETURN_NONE;
}
static const char py_net_create_user_doc[] = "create_user(username)\n"
"Create a new user.";
static PyObject *py_net_user_delete(py_net_Object *self, PyObject *args, PyObject *kwargs)
{
const char *kwnames[] = { "username", NULL };
NTSTATUS status;
TALLOC_CTX *mem_ctx;
struct libnet_DeleteUser r;
if (!PyArg_ParseTupleAndKeywords(args, kwargs, "s", discard_const_p(char *, kwnames),
&r.in.user_name))
return NULL;
r.in.domain_name = cli_credentials_get_domain(self->libnet_ctx->cred);
mem_ctx = talloc_new(NULL);
if (mem_ctx == NULL) {
PyErr_NoMemory();
return NULL;
}
status = libnet_DeleteUser(self->libnet_ctx, mem_ctx, &r);
if (!NT_STATUS_IS_OK(status)) {
PyErr_SetString(PyExc_RuntimeError, r.out.error_string?r.out.error_string:nt_errstr(status));
talloc_free(mem_ctx);
return NULL;
}
talloc_free(mem_ctx);
Py_RETURN_NONE;
}
static const char py_net_delete_user_doc[] = "delete_user(username)\n"
"Delete a user.";
static PyObject *py_dom_sid_FromSid(struct dom_sid *sid)
{
PyObject *mod_security, *dom_sid_Type;
mod_security = PyImport_ImportModule("samba.dcerpc.security");
if (mod_security == NULL)
return NULL;
dom_sid_Type = PyObject_GetAttrString(mod_security, "dom_sid");
if (dom_sid_Type == NULL)
return NULL;
return py_talloc_reference((PyTypeObject *)dom_sid_Type, sid);
}
static PyObject *py_net_vampire(py_net_Object *self, PyObject *args, PyObject *kwargs)
{
const char *kwnames[] = { "domain", "target_dir", NULL };
NTSTATUS status;
TALLOC_CTX *mem_ctx;
PyObject *ret;
struct libnet_Vampire r;
if (!PyArg_ParseTupleAndKeywords(args, kwargs, "s|z", discard_const_p(char *, kwnames),
&r.in.domain_name, &r.in.targetdir)) {
return NULL;
}
r.in.netbios_name = lpcfg_netbios_name(self->libnet_ctx->lp_ctx);
r.out.error_string = NULL;
mem_ctx = talloc_new(NULL);
if (mem_ctx == NULL) {
PyErr_NoMemory();
return NULL;
}
status = libnet_Vampire(self->libnet_ctx, mem_ctx, &r);
if (!NT_STATUS_IS_OK(status)) {
PyErr_SetString(PyExc_RuntimeError,
r.out.error_string ? r.out.error_string : nt_errstr(status));
talloc_free(mem_ctx);
return NULL;
}
ret = Py_BuildValue("(sO)", r.out.domain_name, py_dom_sid_FromSid(r.out.domain_sid));
talloc_free(mem_ctx);
return ret;
}
struct replicate_state {
void *vampire_state;
dcerpc_InterfaceObject *drs_pipe;
struct libnet_BecomeDC_StoreChunk chunk;
DATA_BLOB gensec_skey;
struct libnet_BecomeDC_Partition partition;
struct libnet_BecomeDC_Forest forest;
struct libnet_BecomeDC_DestDSA dest_dsa;
};
/*
setup for replicate_chunk() calls
*/
static PyObject *py_net_replicate_init(py_net_Object *self, PyObject *args, PyObject *kwargs)
{
const char *kwnames[] = { "samdb", "lp", "drspipe", NULL };
PyObject *py_ldb, *py_lp, *py_drspipe;
struct ldb_context *samdb;
struct loadparm_context *lp;
struct replicate_state *s;
NTSTATUS status;
if (!PyArg_ParseTupleAndKeywords(args, kwargs, "OOO",
discard_const_p(char *, kwnames),
&py_ldb, &py_lp, &py_drspipe)) {
return NULL;
}
s = talloc_zero(NULL, struct replicate_state);
if (!s) return NULL;
lp = lpcfg_from_py_object(s, py_lp);
if (lp == NULL) {
PyErr_SetString(PyExc_TypeError, "Expected lp object");
talloc_free(s);
return NULL;
}
samdb = PyLdb_AsLdbContext(py_ldb);
if (samdb == NULL) {
PyErr_SetString(PyExc_TypeError, "Expected ldb object");
talloc_free(s);
return NULL;
}
s->drs_pipe = (dcerpc_InterfaceObject *)(py_drspipe);
s->vampire_state = libnet_vampire_replicate_init(s, samdb, lp);
if (s->vampire_state == NULL) {
PyErr_SetString(PyExc_TypeError, "Failed to initialise vampire_state");
talloc_free(s);
return NULL;
}
status = gensec_session_key(s->drs_pipe->pipe->conn->security_state.generic_state,
&s->gensec_skey);
if (!NT_STATUS_IS_OK(status)) {
PyErr_Format(PyExc_RuntimeError, "Unable to get session key from drspipe: %s",
nt_errstr(status));
talloc_free(s);
return NULL;
}
s->forest.dns_name = lpcfg_dnsdomain(lp);
s->chunk.gensec_skey = &s->gensec_skey;
s->chunk.partition = &s->partition;
s->chunk.forest = &s->forest;
s->chunk.dest_dsa = &s->dest_dsa;
return PyCObject_FromTallocPtr(s);
}
/*
process one replication chunk
*/
static PyObject *py_net_replicate_chunk(py_net_Object *self, PyObject *args, PyObject *kwargs)
{
const char *kwnames[] = { "state", "level", "ctr", "schema", NULL };
PyObject *py_state, *py_ctr, *py_schema;
struct replicate_state *s;
unsigned level;
NTSTATUS (*chunk_handler)(void *private_data, const struct libnet_BecomeDC_StoreChunk *c);
NTSTATUS status;
if (!PyArg_ParseTupleAndKeywords(args, kwargs, "OIO|O",
discard_const_p(char *, kwnames),
&py_state, &level, &py_ctr, &py_schema)) {
return NULL;
}
s = talloc_get_type(PyCObject_AsVoidPtr(py_state), struct replicate_state);
if (!s) {
PyErr_SetString(PyExc_TypeError, "Expected replication_state");
return NULL;
}
switch (level) {
case 1:
if (!py_check_dcerpc_type(py_ctr, "samba.dcerpc.drsuapi", "DsGetNCChangesCtr1")) {
return NULL;
}
s->chunk.ctr1 = py_talloc_get_ptr(py_ctr);
s->partition.nc = *s->chunk.ctr1->naming_context;
s->partition.more_data = s->chunk.ctr1->more_data;
s->partition.source_dsa_guid = s->chunk.ctr1->source_dsa_guid;
s->partition.source_dsa_invocation_id = s->chunk.ctr1->source_dsa_invocation_id;
s->partition.highwatermark = s->chunk.ctr1->new_highwatermark;
break;
case 6:
if (!py_check_dcerpc_type(py_ctr, "samba.dcerpc.drsuapi", "DsGetNCChangesCtr6")) {
return NULL;
}
s->chunk.ctr6 = py_talloc_get_ptr(py_ctr);
s->partition.nc = *s->chunk.ctr6->naming_context;
s->partition.more_data = s->chunk.ctr6->more_data;
s->partition.source_dsa_guid = s->chunk.ctr6->source_dsa_guid;
s->partition.source_dsa_invocation_id = s->chunk.ctr6->source_dsa_invocation_id;
s->partition.highwatermark = s->chunk.ctr6->new_highwatermark;
break;
default:
PyErr_Format(PyExc_TypeError, "Bad level %u in replicate_chunk", level);
return NULL;
}
chunk_handler = libnet_vampire_cb_store_chunk;
if (py_schema) {
if (!PyBool_Check(py_schema)) {
PyErr_SetString(PyExc_TypeError, "Expected boolean schema");
return NULL;
}
if (py_schema == Py_True) {
chunk_handler = libnet_vampire_cb_schema_chunk;
}
}
s->chunk.ctr_level = level;
status = chunk_handler(s->vampire_state, &s->chunk);
if (!NT_STATUS_IS_OK(status)) {
PyErr_Format(PyExc_TypeError, "Failed to process chunk: %s", nt_errstr(status));
return NULL;
}
Py_RETURN_NONE;
}
/*
find a DC given a domain name and server type
*/
static PyObject *py_net_finddc(py_net_Object *self, PyObject *args)
{
const char *domain_name;
unsigned server_type;
NTSTATUS status;
struct finddcs io;
TALLOC_CTX *mem_ctx;
PyObject *ret;
if (!PyArg_ParseTuple(args, "sI", &domain_name, &server_type)) {
return NULL;
}
mem_ctx = talloc_new(self->mem_ctx);
ZERO_STRUCT(io);
io.in.domain_name = domain_name;
io.in.minimum_dc_flags = server_type;
status = finddcs_cldap(mem_ctx, &io,
lpcfg_resolve_context(self->libnet_ctx->lp_ctx), self->ev);
if (NT_STATUS_IS_ERR(status)) {
PyErr_SetString(PyExc_RuntimeError, nt_errstr(status));
talloc_free(mem_ctx);
return NULL;
}
ret = PyString_FromString(io.out.netlogon.data.nt5_ex.pdc_dns_name);
talloc_free(mem_ctx);
return ret;
}
static const char py_net_vampire_doc[] = "vampire(domain, target_dir=None)\n"
"Vampire a domain.";
static const char py_net_replicate_init_doc[] = "replicate_init(samdb, lp, drspipe)\n"
"Setup for replicate_chunk calls.";
static const char py_net_replicate_chunk_doc[] = "replicate_chunk(state, level, ctr, schema)\n"
"Process replication for one chunk";
static const char py_net_finddc_doc[] = "finddc(domain, server_type)\n"
"find a DC with the specified server_type bits. Return the DNS name";
static PyMethodDef net_obj_methods[] = {
{"join", (PyCFunction)py_net_join, METH_VARARGS|METH_KEYWORDS, py_net_join_doc},
{"set_password", (PyCFunction)py_net_set_password, METH_VARARGS|METH_KEYWORDS, py_net_set_password_doc},
{"export_keytab", (PyCFunction)py_net_export_keytab, METH_VARARGS|METH_KEYWORDS, py_net_export_keytab_doc},
{"time", (PyCFunction)py_net_time, METH_VARARGS|METH_KEYWORDS, py_net_time_doc},
{"create_user", (PyCFunction)py_net_user_create, METH_VARARGS|METH_KEYWORDS, py_net_create_user_doc},
{"delete_user", (PyCFunction)py_net_user_delete, METH_VARARGS|METH_KEYWORDS, py_net_delete_user_doc},
{"vampire", (PyCFunction)py_net_vampire, METH_VARARGS|METH_KEYWORDS, py_net_vampire_doc},
{"replicate_init", (PyCFunction)py_net_replicate_init, METH_VARARGS|METH_KEYWORDS, py_net_replicate_init_doc},
{"replicate_chunk", (PyCFunction)py_net_replicate_chunk, METH_VARARGS|METH_KEYWORDS, py_net_replicate_chunk_doc},
{"finddc", (PyCFunction)py_net_finddc, METH_VARARGS, py_net_finddc_doc},
{ NULL }
};
static void py_net_dealloc(py_net_Object *self)
{
talloc_free(self->mem_ctx);
}
static PyObject *net_obj_new(PyTypeObject *type, PyObject *args, PyObject *kwargs)
{
PyObject *py_creds, *py_lp = Py_None;
const char *kwnames[] = { "creds", "lp", NULL };
py_net_Object *ret;
struct loadparm_context *lp;
if (!PyArg_ParseTupleAndKeywords(args, kwargs, "O|O",
discard_const_p(char *, kwnames), &py_creds, &py_lp))
return NULL;
ret = PyObject_New(py_net_Object, type);
if (ret == NULL) {
return NULL;
}
/* FIXME: we really need to get a context from the caller or we may end
* up with 2 event contexts */
ret->ev = s4_event_context_init(NULL);
ret->mem_ctx = talloc_new(ret->ev);
lp = lpcfg_from_py_object(ret->mem_ctx, py_lp);
if (lp == NULL) {
Py_DECREF(ret);
return NULL;
}
ret->libnet_ctx = libnet_context_init(ret->ev, lp);
if (ret->libnet_ctx == NULL) {
PyErr_SetString(PyExc_RuntimeError, "Unable to initialize net");
Py_DECREF(ret);
return NULL;
}
ret->libnet_ctx->cred = cli_credentials_from_py_object(py_creds);
if (ret->libnet_ctx->cred == NULL) {
PyErr_SetString(PyExc_TypeError, "Expected credentials object");
Py_DECREF(ret);
return NULL;
}
return (PyObject *)ret;
}
PyTypeObject py_net_Type = {
PyObject_HEAD_INIT(NULL) 0,
.tp_name = "net.Net",
.tp_basicsize = sizeof(py_net_Object),
.tp_dealloc = (destructor)py_net_dealloc,
.tp_methods = net_obj_methods,
.tp_new = net_obj_new,
};
void initnet(void)
{
PyObject *m;
if (PyType_Ready(&py_net_Type) < 0)
return;
m = Py_InitModule3("net", NULL, NULL);
if (m == NULL)
return;
Py_INCREF(&py_net_Type);
PyModule_AddObject(m, "Net", (PyObject *)&py_net_Type);
PyModule_AddObject(m, "LIBNET_JOINDOMAIN_AUTOMATIC", PyInt_FromLong(LIBNET_JOINDOMAIN_AUTOMATIC));
PyModule_AddObject(m, "LIBNET_JOINDOMAIN_SPECIFIED", PyInt_FromLong(LIBNET_JOINDOMAIN_SPECIFIED));
PyModule_AddObject(m, "LIBNET_JOIN_AUTOMATIC", PyInt_FromLong(LIBNET_JOIN_AUTOMATIC));
PyModule_AddObject(m, "LIBNET_JOIN_SPECIFIED", PyInt_FromLong(LIBNET_JOIN_SPECIFIED));
}