/* * libvir.c: this modules implements the main part of the glue of the * libvir library and the Python interpreter. It provides the * entry points where an automatically generated stub is * unpractical * * Copyright (C) 2005 Red Hat, Inc. * * Daniel Veillard */ #include #include #include #include "libvirt_wrap.h" #include "libvirt-py.h" extern void initlibvirtmod(void); PyObject *libvirt_virDomainGetUUID(PyObject *self ATTRIBUTE_UNUSED, PyObject *args); PyObject *libvirt_virNetworkGetUUID(PyObject *self ATTRIBUTE_UNUSED, PyObject *args); PyObject *libvirt_virGetLastError(PyObject *self ATTRIBUTE_UNUSED, PyObject *args); PyObject *libvirt_virConnGetLastError(PyObject *self ATTRIBUTE_UNUSED, PyObject *args); /************************************************************************ * * * Global error handler at the Python level * * * ************************************************************************/ static PyObject *libvirt_virPythonErrorFuncHandler = NULL; static PyObject *libvirt_virPythonErrorFuncCtxt = NULL; PyObject * libvirt_virGetLastError(PyObject *self ATTRIBUTE_UNUSED, PyObject *args ATTRIBUTE_UNUSED) { virError err; PyObject *info; if (virCopyLastError(&err) <= 0) { Py_INCREF(Py_None); return(Py_None); } info = PyTuple_New(9); PyTuple_SetItem(info, 0, PyInt_FromLong((long) err.code)); PyTuple_SetItem(info, 1, PyInt_FromLong((long) err.domain)); PyTuple_SetItem(info, 2, libvirt_constcharPtrWrap(err.message)); PyTuple_SetItem(info, 3, PyInt_FromLong((long) err.level)); PyTuple_SetItem(info, 4, libvirt_constcharPtrWrap(err.str1)); PyTuple_SetItem(info, 5, libvirt_constcharPtrWrap(err.str2)); PyTuple_SetItem(info, 6, libvirt_constcharPtrWrap(err.str3)); PyTuple_SetItem(info, 7, PyInt_FromLong((long) err.int1)); PyTuple_SetItem(info, 8, PyInt_FromLong((long) err.int2)); return info; } PyObject * libvirt_virConnGetLastError(PyObject *self ATTRIBUTE_UNUSED, PyObject *args) { virError err; PyObject *info; virConnectPtr conn; PyObject *pyobj_conn; if (!PyArg_ParseTuple(args, (char *)"O:virConGetLastError", &pyobj_conn)) return(NULL); conn = (virConnectPtr) PyvirConnect_Get(pyobj_conn); if (virConnCopyLastError(conn, &err) <= 0) { Py_INCREF(Py_None); return(Py_None); } info = PyTuple_New(9); PyTuple_SetItem(info, 0, PyInt_FromLong((long) err.code)); PyTuple_SetItem(info, 1, PyInt_FromLong((long) err.domain)); PyTuple_SetItem(info, 2, libvirt_constcharPtrWrap(err.message)); PyTuple_SetItem(info, 3, PyInt_FromLong((long) err.level)); PyTuple_SetItem(info, 4, libvirt_constcharPtrWrap(err.str1)); PyTuple_SetItem(info, 5, libvirt_constcharPtrWrap(err.str2)); PyTuple_SetItem(info, 6, libvirt_constcharPtrWrap(err.str3)); PyTuple_SetItem(info, 7, PyInt_FromLong((long) err.int1)); PyTuple_SetItem(info, 8, PyInt_FromLong((long) err.int2)); return info; } static void libvirt_virErrorFuncHandler(ATTRIBUTE_UNUSED void *ctx, virErrorPtr err) { PyObject *list, *info; PyObject *result; #ifdef DEBUG_ERROR printf("libvirt_virErrorFuncHandler(%p, %s, ...) called\n", ctx, msg); #endif if ((err == NULL) || (err->code == VIR_ERR_OK)) return; LIBVIRT_ENSURE_THREAD_STATE; if ((libvirt_virPythonErrorFuncHandler == NULL) || (libvirt_virPythonErrorFuncHandler == Py_None)) { virDefaultErrorFunc(err); } else { list = PyTuple_New(2); info = PyTuple_New(9); PyTuple_SetItem(list, 0, libvirt_virPythonErrorFuncCtxt); PyTuple_SetItem(list, 1, info); Py_XINCREF(libvirt_virPythonErrorFuncCtxt); PyTuple_SetItem(info, 0, PyInt_FromLong((long) err->code)); PyTuple_SetItem(info, 1, PyInt_FromLong((long) err->domain)); PyTuple_SetItem(info, 2, libvirt_constcharPtrWrap(err->message)); PyTuple_SetItem(info, 3, PyInt_FromLong((long) err->level)); PyTuple_SetItem(info, 4, libvirt_constcharPtrWrap(err->str1)); PyTuple_SetItem(info, 5, libvirt_constcharPtrWrap(err->str2)); PyTuple_SetItem(info, 6, libvirt_constcharPtrWrap(err->str3)); PyTuple_SetItem(info, 7, PyInt_FromLong((long) err->int1)); PyTuple_SetItem(info, 8, PyInt_FromLong((long) err->int2)); /* TODO pass conn and dom if available */ result = PyEval_CallObject(libvirt_virPythonErrorFuncHandler, list); Py_XDECREF(list); Py_XDECREF(result); } LIBVIRT_RELEASE_THREAD_STATE; } static PyObject * libvirt_virRegisterErrorHandler(ATTRIBUTE_UNUSED PyObject * self, PyObject * args) { PyObject *py_retval; PyObject *pyobj_f; PyObject *pyobj_ctx; if (!PyArg_ParseTuple (args, (char *) "OO:xmlRegisterErrorHandler", &pyobj_f, &pyobj_ctx)) return (NULL); #ifdef DEBUG_ERROR printf("libvirt_virRegisterErrorHandler(%p, %p) called\n", pyobj_ctx, pyobj_f); #endif virSetErrorFunc(NULL, libvirt_virErrorFuncHandler); if (libvirt_virPythonErrorFuncHandler != NULL) { Py_XDECREF(libvirt_virPythonErrorFuncHandler); } if (libvirt_virPythonErrorFuncCtxt != NULL) { Py_XDECREF(libvirt_virPythonErrorFuncCtxt); } if ((pyobj_f == Py_None) && (pyobj_ctx == Py_None)) { libvirt_virPythonErrorFuncHandler = NULL; libvirt_virPythonErrorFuncCtxt = NULL; } else { Py_XINCREF(pyobj_ctx); Py_XINCREF(pyobj_f); /* TODO: check f is a function ! */ libvirt_virPythonErrorFuncHandler = pyobj_f; libvirt_virPythonErrorFuncCtxt = pyobj_ctx; } py_retval = libvirt_intWrap(1); return (py_retval); } /************************************************************************ * * * Wrappers for functions where generator fails * * * ************************************************************************/ static PyObject * libvirt_virGetVersion (PyObject *self ATTRIBUTE_UNUSED, PyObject *args) { char *type = NULL; unsigned long libVer, typeVer = 0; int c_retval; if (!PyArg_ParseTuple (args, (char *) "|s", &type)) return NULL; LIBVIRT_BEGIN_ALLOW_THREADS; if (type == NULL) c_retval = virGetVersion (&libVer, NULL, NULL); else c_retval = virGetVersion (&libVer, type, &typeVer); LIBVIRT_END_ALLOW_THREADS; if (c_retval == -1) { Py_INCREF(Py_None); return (Py_None); } if (type == NULL) return PyInt_FromLong (libVer); else return Py_BuildValue ((char *) "kk", libVer, typeVer); } static PyObject * libvirt_virDomainFree(PyObject *self ATTRIBUTE_UNUSED, PyObject *args) { PyObject *py_retval; int c_retval; virDomainPtr domain; PyObject *pyobj_domain; if (!PyArg_ParseTuple(args, (char *)"O:virDomainFree", &pyobj_domain)) return(NULL); domain = (virDomainPtr) PyvirDomain_Get(pyobj_domain); LIBVIRT_BEGIN_ALLOW_THREADS; c_retval = virDomainFree(domain); LIBVIRT_END_ALLOW_THREADS; py_retval = libvirt_intWrap((int) c_retval); return(py_retval); } static PyObject * libvirt_virConnectClose(PyObject *self ATTRIBUTE_UNUSED, PyObject *args) { PyObject *py_retval; int c_retval; virConnectPtr conn; PyObject *pyobj_conn; if (!PyArg_ParseTuple(args, (char *)"O:virConnectClose", &pyobj_conn)) return(NULL); conn = (virConnectPtr) PyvirConnect_Get(pyobj_conn); LIBVIRT_BEGIN_ALLOW_THREADS; c_retval = virConnectClose(conn); LIBVIRT_END_ALLOW_THREADS; py_retval = libvirt_intWrap((int) c_retval); return(py_retval); } static PyObject * libvirt_virConnectListDomainsID(PyObject *self ATTRIBUTE_UNUSED, PyObject *args) { PyObject *py_retval; int ids[500], c_retval, i; virConnectPtr conn; PyObject *pyobj_conn; if (!PyArg_ParseTuple(args, (char *)"O:virConnectListDomains", &pyobj_conn)) return(NULL); conn = (virConnectPtr) PyvirConnect_Get(pyobj_conn); LIBVIRT_BEGIN_ALLOW_THREADS; c_retval = virConnectListDomains(conn, &ids[0], 500); LIBVIRT_END_ALLOW_THREADS; if (c_retval < 0) { Py_INCREF(Py_None); return(Py_None); } py_retval = PyList_New(c_retval); for (i = 0;i < c_retval;i++) { PyList_SetItem(py_retval, i, libvirt_intWrap(ids[i])); } return(py_retval); } static PyObject * libvirt_virConnectListDefinedDomains(PyObject *self ATTRIBUTE_UNUSED, PyObject *args) { PyObject *py_retval; char **names = NULL; int c_retval, i; virConnectPtr conn; PyObject *pyobj_conn; if (!PyArg_ParseTuple(args, (char *)"O:virConnectListDefinedDomains", &pyobj_conn)) return(NULL); conn = (virConnectPtr) PyvirConnect_Get(pyobj_conn); c_retval = virConnectNumOfDefinedDomains(conn); if (c_retval < 0) { Py_INCREF(Py_None); return (Py_None); } if (c_retval) { names = malloc(sizeof(char *) * c_retval); if (!names) { Py_INCREF(Py_None); return (Py_None); } c_retval = virConnectListDefinedDomains(conn, names, c_retval); if (c_retval < 0) { free(names); Py_INCREF(Py_None); return(Py_None); } } py_retval = PyList_New(c_retval); if (names) { for (i = 0;i < c_retval;i++) { PyList_SetItem(py_retval, i, libvirt_constcharPtrWrap(names[i])); free(names[i]); } free(names); } return(py_retval); } static PyObject * libvirt_virDomainGetInfo(PyObject *self ATTRIBUTE_UNUSED, PyObject *args) { PyObject *py_retval; int c_retval; virDomainPtr domain; PyObject *pyobj_domain; virDomainInfo info; if (!PyArg_ParseTuple(args, (char *)"O:virDomainGetInfo", &pyobj_domain)) return(NULL); domain = (virDomainPtr) PyvirDomain_Get(pyobj_domain); LIBVIRT_BEGIN_ALLOW_THREADS; c_retval = virDomainGetInfo(domain, &info); LIBVIRT_END_ALLOW_THREADS; if (c_retval < 0) { Py_INCREF(Py_None); return(Py_None); } py_retval = PyList_New(5); PyList_SetItem(py_retval, 0, libvirt_intWrap((int) info.state)); PyList_SetItem(py_retval, 1, libvirt_ulongWrap(info.maxMem)); PyList_SetItem(py_retval, 2, libvirt_ulongWrap(info.memory)); PyList_SetItem(py_retval, 3, libvirt_intWrap((int) info.nrVirtCpu)); PyList_SetItem(py_retval, 4, libvirt_longlongWrap((unsigned long long) info.cpuTime)); return(py_retval); } static PyObject * libvirt_virNodeGetInfo(PyObject *self ATTRIBUTE_UNUSED, PyObject *args) { PyObject *py_retval; int c_retval; virConnectPtr conn; PyObject *pyobj_conn; virNodeInfo info; if (!PyArg_ParseTuple(args, (char *)"O:virDomainGetInfo", &pyobj_conn)) return(NULL); conn = (virConnectPtr) PyvirConnect_Get(pyobj_conn); LIBVIRT_BEGIN_ALLOW_THREADS; c_retval = virNodeGetInfo(conn, &info); LIBVIRT_END_ALLOW_THREADS; if (c_retval < 0) { Py_INCREF(Py_None); return(Py_None); } py_retval = PyList_New(8); PyList_SetItem(py_retval, 0, libvirt_constcharPtrWrap(&info.model[0])); PyList_SetItem(py_retval, 1, libvirt_longWrap((long) info.memory >> 10)); PyList_SetItem(py_retval, 2, libvirt_intWrap((int) info.cpus)); PyList_SetItem(py_retval, 3, libvirt_intWrap((int) info.mhz)); PyList_SetItem(py_retval, 4, libvirt_intWrap((int) info.nodes)); PyList_SetItem(py_retval, 5, libvirt_intWrap((int) info.sockets)); PyList_SetItem(py_retval, 6, libvirt_intWrap((int) info.cores)); PyList_SetItem(py_retval, 7, libvirt_intWrap((int) info.threads)); return(py_retval); } PyObject * libvirt_virDomainGetUUID(PyObject *self ATTRIBUTE_UNUSED, PyObject *args) { PyObject *py_retval; unsigned char uuid[VIR_UUID_BUFLEN]; virDomainPtr domain; PyObject *pyobj_domain; int c_retval; if (!PyArg_ParseTuple(args, (char *)"O:virDomainGetUUID", &pyobj_domain)) return(NULL); domain = (virDomainPtr) PyvirDomain_Get(pyobj_domain); if (domain == NULL) { Py_INCREF(Py_None); return(Py_None); } LIBVIRT_BEGIN_ALLOW_THREADS; c_retval = virDomainGetUUID(domain, &uuid[0]); LIBVIRT_END_ALLOW_THREADS; if (c_retval < 0) { Py_INCREF(Py_None); return(Py_None); } py_retval = PyString_FromStringAndSize((char *) &uuid[0], VIR_UUID_BUFLEN); return(py_retval); } static PyObject * libvirt_virDomainLookupByUUID(PyObject *self ATTRIBUTE_UNUSED, PyObject *args) { PyObject *py_retval; virDomainPtr c_retval; virConnectPtr conn; PyObject *pyobj_conn; unsigned char * uuid; int len; if (!PyArg_ParseTuple(args, (char *)"Oz#:virDomainLookupByUUID", &pyobj_conn, &uuid, &len)) return(NULL); conn = (virConnectPtr) PyvirConnect_Get(pyobj_conn); if ((uuid == NULL) || (len != VIR_UUID_BUFLEN)) { Py_INCREF(Py_None); return(Py_None); } LIBVIRT_BEGIN_ALLOW_THREADS; c_retval = virDomainLookupByUUID(conn, uuid); LIBVIRT_END_ALLOW_THREADS; py_retval = libvirt_virDomainPtrWrap((virDomainPtr) c_retval); return(py_retval); } static PyObject * libvirt_virNetworkFree(PyObject *self ATTRIBUTE_UNUSED, PyObject *args) { PyObject *py_retval; int c_retval; virNetworkPtr domain; PyObject *pyobj_domain; if (!PyArg_ParseTuple(args, (char *)"O:virNetworkFree", &pyobj_domain)) return(NULL); domain = (virNetworkPtr) PyvirNetwork_Get(pyobj_domain); LIBVIRT_BEGIN_ALLOW_THREADS; c_retval = virNetworkFree(domain); LIBVIRT_END_ALLOW_THREADS; py_retval = libvirt_intWrap((int) c_retval); return(py_retval); } static PyObject * libvirt_virConnectListNetworks(PyObject *self ATTRIBUTE_UNUSED, PyObject *args) { PyObject *py_retval; char **names = NULL; int c_retval, i; virConnectPtr conn; PyObject *pyobj_conn; if (!PyArg_ParseTuple(args, (char *)"O:virConnectListNetworks", &pyobj_conn)) return(NULL); conn = (virConnectPtr) PyvirConnect_Get(pyobj_conn); c_retval = virConnectNumOfNetworks(conn); if (c_retval < 0) { Py_INCREF(Py_None); return (Py_None); } if (c_retval) { names = malloc(sizeof(char *) * c_retval); if (!names) { Py_INCREF(Py_None); return (Py_None); } c_retval = virConnectListNetworks(conn, names, c_retval); if (c_retval < 0) { free(names); Py_INCREF(Py_None); return(Py_None); } } py_retval = PyList_New(c_retval); if (names) { for (i = 0;i < c_retval;i++) { PyList_SetItem(py_retval, i, libvirt_constcharPtrWrap(names[i])); free(names[i]); } free(names); } return(py_retval); } static PyObject * libvirt_virConnectListDefinedNetworks(PyObject *self ATTRIBUTE_UNUSED, PyObject *args) { PyObject *py_retval; char **names = NULL; int c_retval, i; virConnectPtr conn; PyObject *pyobj_conn; if (!PyArg_ParseTuple(args, (char *)"O:virConnectListDefinedNetworks", &pyobj_conn)) return(NULL); conn = (virConnectPtr) PyvirConnect_Get(pyobj_conn); c_retval = virConnectNumOfDefinedNetworks(conn); if (c_retval < 0) { Py_INCREF(Py_None); return (Py_None); } if (c_retval) { names = malloc(sizeof(char *) * c_retval); if (!names) { Py_INCREF(Py_None); return (Py_None); } c_retval = virConnectListDefinedNetworks(conn, names, c_retval); if (c_retval < 0) { free(names); Py_INCREF(Py_None); return(Py_None); } } py_retval = PyList_New(c_retval); if (names) { for (i = 0;i < c_retval;i++) { PyList_SetItem(py_retval, i, libvirt_constcharPtrWrap(names[i])); free(names[i]); } free(names); } return(py_retval); } PyObject * libvirt_virNetworkGetUUID(PyObject *self ATTRIBUTE_UNUSED, PyObject *args) { PyObject *py_retval; unsigned char uuid[VIR_UUID_BUFLEN]; virNetworkPtr domain; PyObject *pyobj_domain; int c_retval; if (!PyArg_ParseTuple(args, (char *)"O:virNetworkGetUUID", &pyobj_domain)) return(NULL); domain = (virNetworkPtr) PyvirNetwork_Get(pyobj_domain); if (domain == NULL) { Py_INCREF(Py_None); return(Py_None); } LIBVIRT_BEGIN_ALLOW_THREADS; c_retval = virNetworkGetUUID(domain, &uuid[0]); LIBVIRT_END_ALLOW_THREADS; if (c_retval < 0) { Py_INCREF(Py_None); return(Py_None); } py_retval = PyString_FromStringAndSize((char *) &uuid[0], VIR_UUID_BUFLEN); return(py_retval); } static PyObject * libvirt_virNetworkLookupByUUID(PyObject *self ATTRIBUTE_UNUSED, PyObject *args) { PyObject *py_retval; virNetworkPtr c_retval; virConnectPtr conn; PyObject *pyobj_conn; unsigned char * uuid; int len; if (!PyArg_ParseTuple(args, (char *)"Oz#:virNetworkLookupByUUID", &pyobj_conn, &uuid, &len)) return(NULL); conn = (virConnectPtr) PyvirConnect_Get(pyobj_conn); if ((uuid == NULL) || (len != VIR_UUID_BUFLEN)) { Py_INCREF(Py_None); return(Py_None); } LIBVIRT_BEGIN_ALLOW_THREADS; c_retval = virNetworkLookupByUUID(conn, uuid); LIBVIRT_END_ALLOW_THREADS; py_retval = libvirt_virNetworkPtrWrap((virNetworkPtr) c_retval); return(py_retval); } PyObject * libvirt_virDomainGetAutostart(PyObject *self ATTRIBUTE_UNUSED, PyObject *args) { PyObject *py_retval; int c_retval, autostart; virDomainPtr domain; PyObject *pyobj_domain; if (!PyArg_ParseTuple(args, (char *)"O:virDomainGetAutostart", &pyobj_domain)) return(NULL); domain = (virDomainPtr) PyvirDomain_Get(pyobj_domain); LIBVIRT_BEGIN_ALLOW_THREADS; c_retval = virDomainGetAutostart(domain, &autostart); LIBVIRT_END_ALLOW_THREADS; if (c_retval < 0) { Py_INCREF(Py_None); return Py_None; } py_retval = libvirt_intWrap(autostart); return(py_retval); } PyObject * libvirt_virNetworkGetAutostart(PyObject *self ATTRIBUTE_UNUSED, PyObject *args) { PyObject *py_retval; int c_retval, autostart; virNetworkPtr network; PyObject *pyobj_network; if (!PyArg_ParseTuple(args, (char *)"O:virNetworkGetAutostart", &pyobj_network)) return(NULL); network = (virNetworkPtr) PyvirNetwork_Get(pyobj_network); LIBVIRT_BEGIN_ALLOW_THREADS; c_retval = virNetworkGetAutostart(network, &autostart); LIBVIRT_END_ALLOW_THREADS; if (c_retval < 0) { Py_INCREF(Py_None); return Py_None; } py_retval = libvirt_intWrap(autostart); return(py_retval); } /************************************************************************ * * * The registration stuff * * * ************************************************************************/ static PyMethodDef libvirtMethods[] = { #include "libvirt-export.c" {(char *) "virGetVersion", libvirt_virGetVersion, METH_VARARGS, NULL}, {(char *) "virDomainFree", libvirt_virDomainFree, METH_VARARGS, NULL}, {(char *) "virConnectClose", libvirt_virConnectClose, METH_VARARGS, NULL}, {(char *) "virConnectListDomainsID", libvirt_virConnectListDomainsID, METH_VARARGS, NULL}, {(char *) "virConnectListDefinedDomains", libvirt_virConnectListDefinedDomains, METH_VARARGS, NULL}, {(char *) "virDomainGetInfo", libvirt_virDomainGetInfo, METH_VARARGS, NULL}, {(char *) "virNodeGetInfo", libvirt_virNodeGetInfo, METH_VARARGS, NULL}, {(char *) "virDomainGetUUID", libvirt_virDomainGetUUID, METH_VARARGS, NULL}, {(char *) "virDomainLookupByUUID", libvirt_virDomainLookupByUUID, METH_VARARGS, NULL}, {(char *) "virRegisterErrorHandler", libvirt_virRegisterErrorHandler, METH_VARARGS, NULL}, {(char *) "virGetLastError", libvirt_virGetLastError, METH_VARARGS, NULL}, {(char *) "virConnGetLastError", libvirt_virConnGetLastError, METH_VARARGS, NULL}, {(char *) "virNetworkFree", libvirt_virNetworkFree, METH_VARARGS, NULL}, {(char *) "virConnectListNetworks", libvirt_virConnectListNetworks, METH_VARARGS, NULL}, {(char *) "virConnectListDefinedNetworks", libvirt_virConnectListDefinedNetworks, METH_VARARGS, NULL}, {(char *) "virNetworkGetUUID", libvirt_virNetworkGetUUID, METH_VARARGS, NULL}, {(char *) "virNetworkLookupByUUID", libvirt_virNetworkLookupByUUID, METH_VARARGS, NULL}, {(char *) "virDomainGetAutostart", libvirt_virDomainGetAutostart, METH_VARARGS, NULL}, {(char *) "virNetworkGetAutostart", libvirt_virNetworkGetAutostart, METH_VARARGS, NULL}, {NULL, NULL, 0, NULL} }; void initlibvirtmod(void) { static int initialized = 0; if (initialized != 0) return; virInitialize(); /* intialize the python extension module */ Py_InitModule((char *) "libvirtmod", libvirtMethods); initialized = 1; } /* * vim: set tabstop=4: * vim: set shiftwidth=4: * vim: set expandtab: */ /* * Local variables: * indent-tabs-mode: nil * c-indent-level: 4 * c-basic-offset: 4 * tab-width: 4 * End: */ 530'>530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 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/*
   Samba CIFS implementation
   Registry backend for REGF files
   Copyright (C) 2005-2007 Jelmer Vernooij, jelmer@samba.org
   Copyright (C) 2006 Wilco Baan Hofman, wilco@baanhofman.nl

   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 "includes.h"
#include "system/filesys.h"
#include "system/time.h"
#include "lib/registry/tdr_regf.h"
#include "librpc/gen_ndr/ndr_security.h"
#include "librpc/gen_ndr/winreg.h"
#include "lib/registry/registry.h"
#include "libcli/security/security.h"


static struct hive_operations reg_backend_regf;

/**
 * There are several places on the web where the REGF format is explained;
 *
 * TODO: Links
 */

/* TODO:
 *  - Return error codes that make more sense
 *  - Locking
 *  - do more things in-memory
 */

/*
 * Read HBIN blocks into memory
 */

struct regf_data {
	int fd;
	struct hbin_block **hbins;
	struct regf_hdr *header;
	struct smb_iconv_convenience *iconv_convenience;
};

static WERROR regf_save_hbin(struct regf_data *data);

struct regf_key_data {
	struct hive_key key;
	struct regf_data *hive;
	uint32_t offset;
	struct nk_block *nk;
};

static struct hbin_block *hbin_by_offset(const struct regf_data *data,
					 uint32_t offset, uint32_t *rel_offset)
{
	int i;

	for (i = 0; data->hbins[i]; i++) {
		if (offset >= data->hbins[i]->offset_from_first &&
			offset < data->hbins[i]->offset_from_first+
					 data->hbins[i]->offset_to_next) {
			if (rel_offset != NULL)
				*rel_offset = offset - data->hbins[i]->offset_from_first - 0x20;
			return data->hbins[i];
		}
	}

	return NULL;
}

/**
 * Validate a regf header
 * For now, do nothing, but we should check the checksum
 */
static uint32_t regf_hdr_checksum(const uint8_t *buffer)
{
	uint32_t checksum = 0, x;
	int i;

	for (i = 0; i < 0x01FB; i+= 4) {
		x = IVAL(buffer, i);
		checksum ^= x;
	}

	return checksum;
}

/**
 * Obtain the contents of a HBIN block
 */
static DATA_BLOB hbin_get(const struct regf_data *data, uint32_t offset)
{
	DATA_BLOB ret;
	struct hbin_block *hbin;
	uint32_t rel_offset;

	ret.data = NULL;
	ret.length = 0;

	hbin = hbin_by_offset(data, offset, &rel_offset);

	if (hbin == NULL) {
		DEBUG(1, ("Can't find HBIN containing 0x%04x\n", offset));
		return ret;
	}

	ret.length = IVAL(hbin->data, rel_offset);
	if (!(ret.length & 0x80000000)) {
		DEBUG(0, ("Trying to use dirty block at 0x%04x\n", offset));
		return ret;
	}

	/* remove high bit */
	ret.length = (ret.length ^ 0xffffffff) + 1;

	ret.length -= 4; /* 4 bytes for the length... */
	ret.data = hbin->data +
		(offset - hbin->offset_from_first - 0x20) + 4;

	return ret;
}

static bool hbin_get_tdr(struct regf_data *regf, uint32_t offset,
			 TALLOC_CTX *ctx, tdr_pull_fn_t pull_fn, void *p)
{
	struct tdr_pull *pull = tdr_pull_init(regf, regf->iconv_convenience);

	pull->data = hbin_get(regf, offset);
	if (!pull->data.data) {
		DEBUG(1, ("Unable to get data at 0x%04x\n", offset));
		talloc_free(pull);
		return false;
	}

	if (NT_STATUS_IS_ERR(pull_fn(pull, ctx, p))) {
		DEBUG(1, ("Error parsing record at 0x%04x using tdr\n",
			offset));
		talloc_free(pull);
		return false;
	}
	talloc_free(pull);

	return true;
}

/* Allocate some new data */
static DATA_BLOB hbin_alloc(struct regf_data *data, uint32_t size,
			    uint32_t *offset)
{
	DATA_BLOB ret;
	uint32_t rel_offset = -1; /* Relative offset ! */
	struct hbin_block *hbin = NULL;
	int i;

	*offset = 0;

	if (size == 0)
		return data_blob(NULL, 0);

	size += 4; /* Need to include int32 for the length */

	/* Allocate as a multiple of 8 */
	size = (size + 7) & ~7;

	ret.data = NULL;
	ret.length = 0;

	for (i = 0; (hbin = data->hbins[i]); i++) {
		int j;
		int32_t my_size;
		for (j = 0; j < hbin->offset_to_next-0x20; j+= my_size) {
			my_size = IVALS(hbin->data, j);

			if (my_size == 0x0) {
				DEBUG(0, ("Invalid zero-length block! File is corrupt.\n"));
				return ret;
			}

			if (my_size % 8 != 0) {
				DEBUG(0, ("Encountered non-aligned block!\n"));
			}

			if (my_size < 0) { /* Used... */
				my_size = -my_size;
			} else if (my_size == size) { /* exact match */
				rel_offset = j;
				DEBUG(4, ("Found free block of exact size %d in middle of HBIN\n",
					size));
				break;
			} else if (my_size > size) { /* data will remain */
				rel_offset = j;
				/* Split this block and mark the next block as free */
				SIVAL(hbin->data, rel_offset+size, my_size-size);
				DEBUG(4, ("Found free block of size %d (needing %d) in middle of HBIN\n",
					my_size, size));
				break;
			}
		}

		if (rel_offset != -1)
			break;
	}

	/* No space available in previous hbins,
	 * allocate new one */
	if (data->hbins[i] == NULL) {
		DEBUG(4, ("No space available in other HBINs for block of size %d, allocating new HBIN\n",
			size));
		data->hbins = talloc_realloc(data, data->hbins,
					     struct hbin_block *, i+2);
		hbin = talloc(data->hbins, struct hbin_block);
		SMB_ASSERT(hbin != NULL);

		data->hbins[i] = hbin;
		data->hbins[i+1] = NULL;

		hbin->HBIN_ID = talloc_strdup(hbin, "hbin");
		hbin->offset_from_first = (i == 0?0:data->hbins[i-1]->offset_from_first+data->hbins[i-1]->offset_to_next);
		hbin->offset_to_next = 0x1000;
		hbin->unknown[0] = 0;
		hbin->unknown[0] = 0;
		unix_to_nt_time(&hbin->last_change, time(NULL));
		hbin->block_size = hbin->offset_to_next;
		hbin->data = talloc_zero_array(hbin, uint8_t, hbin->block_size - 0x20);

		rel_offset = 0x0;
		SIVAL(hbin->data, size, hbin->block_size - size - 0x20);
	}

	/* Set size and mark as used */
	SIVAL(hbin->data, rel_offset, -size);

	ret.data = hbin->data + rel_offset + 0x4; /* Skip past length */
	ret.length = size - 0x4;
	if (offset) {
		uint32_t new_rel_offset;
		*offset = hbin->offset_from_first + rel_offset + 0x20;
		SMB_ASSERT(hbin_by_offset(data, *offset, &new_rel_offset) == hbin);
		SMB_ASSERT(new_rel_offset == rel_offset);
	}

	return ret;
}

/* Store a data blob. Return the offset at which it was stored */
static uint32_t hbin_store (struct regf_data *data, DATA_BLOB blob)
{
	uint32_t ret;
	DATA_BLOB dest = hbin_alloc(data, blob.length, &ret);

	memcpy(dest.data, blob.data, blob.length);

	return ret;
}

static uint32_t hbin_store_tdr(struct regf_data *data,
			       tdr_push_fn_t push_fn, void *p)
{
	struct tdr_push *push = tdr_push_init(data, data->iconv_convenience);
	uint32_t ret;

	if (NT_STATUS_IS_ERR(push_fn(push, p))) {
		DEBUG(0, ("Error during push\n"));
		return -1;
	}

	ret = hbin_store(data, push->data);

	talloc_free(push);

	return ret;
}


/* Free existing data */
static void hbin_free (struct regf_data *data, uint32_t offset)
{
	int32_t size;
	uint32_t rel_offset;
	int32_t next_size;
	struct hbin_block *hbin;

	SMB_ASSERT (offset > 0);

	hbin = hbin_by_offset(data, offset, &rel_offset);

	if (hbin == NULL)
		return;

	/* Get original size */
	size = IVALS(hbin->data, rel_offset);

	if (size > 0) {
		DEBUG(1, ("Trying to free already freed block at 0x%04x\n",
			offset));
		return;
	}
	/* Mark as unused */
	size = -size;

	/* If the next block is free, merge into big free block */
	if (rel_offset + size < hbin->offset_to_next) {
		next_size = IVALS(hbin->data, rel_offset+size);
		if (next_size > 0) {
			size += next_size;
		}
	}

	/* Write block size */
	SIVALS(hbin->data, rel_offset, size);
}

/**
 * Store a data blob data was already stored, but has changed in size
 * Will try to save it at the current location if possible, otherwise
 * does a free + store */
static uint32_t hbin_store_resize(struct regf_data *data,
				  uint32_t orig_offset, DATA_BLOB blob)
{
	uint32_t rel_offset;
	struct hbin_block *hbin = hbin_by_offset(data, orig_offset,
						 &rel_offset);
	int32_t my_size;
	int32_t orig_size;
	int32_t needed_size;
	int32_t possible_size;
	int i;

	SMB_ASSERT(orig_offset > 0);

	if (!hbin)
		return hbin_store(data, blob);

	/* Get original size */
	orig_size = -IVALS(hbin->data, rel_offset);

	needed_size = blob.length + 4; /* Add int32 containing length */
	needed_size = (needed_size + 7) & ~7; /* Align */

	/* Fits into current allocated block */
	if (orig_size >= needed_size) {
		memcpy(hbin->data + rel_offset + 0x4, blob.data, blob.length);
		/* If the difference in size is greater than 0x4, split the block
		 * and free/merge it */
		if (orig_size - needed_size > 0x4) {
			SIVALS(hbin->data, rel_offset, -needed_size);
			SIVALS(hbin->data, rel_offset + needed_size,
			       needed_size-orig_size);
			hbin_free(data, orig_offset + needed_size);
		}
		return orig_offset;
	}

	possible_size = orig_size;

	/* Check if it can be combined with the next few free records */
	for (i = rel_offset; i < hbin->offset_to_next - 0x20; i += my_size) {
		if (IVALS(hbin->data, i) < 0) /* Used */
			break;

		my_size = IVALS(hbin->data, i);

		if (my_size == 0x0) {
			DEBUG(0, ("Invalid zero-length block! File is corrupt.\n"));
			break;
		} else {
			possible_size += my_size;
		}

		if (possible_size >= blob.length) {
			SIVAL(hbin->data, rel_offset, -possible_size);
			memcpy(hbin->data + rel_offset + 0x4,
			       blob.data, blob.length);
			return orig_offset;
		}
	}

	hbin_free(data, orig_offset);
	return hbin_store(data, blob);
}

static uint32_t hbin_store_tdr_resize(struct regf_data *regf,
				      tdr_push_fn_t push_fn,
				      uint32_t orig_offset, void *p)
{
	struct tdr_push *push = tdr_push_init(regf, regf->iconv_convenience);
	uint32_t ret;

	if (NT_STATUS_IS_ERR(push_fn(push, p))) {
		DEBUG(0, ("Error during push\n"));
		return -1;
	}

	ret = hbin_store_resize(regf, orig_offset, push->data);

	talloc_free(push);

	return ret;
}

static uint32_t regf_create_lh_hash(const char *name)
{
	char *hash_name;
	uint32_t ret = 0;
	uint16_t i;

	hash_name = strupper_talloc(NULL, name);
	for (i = 0; *(hash_name + i) != 0; i++) {
		ret *= 37;
		ret += *(hash_name + i);
	}
	talloc_free(hash_name);
	return ret;
}

static WERROR regf_get_info(TALLOC_CTX *mem_ctx,
			    const struct hive_key *key,
			    const char **classname,
			    uint32_t *num_subkeys,
			    uint32_t *num_values,
			    NTTIME *last_mod_time,
			    uint32_t *max_subkeynamelen,
			    uint32_t *max_valnamelen,
			    uint32_t *max_valbufsize)
{
	const struct regf_key_data *private_data =
		(const struct regf_key_data *)key;

	if (num_subkeys != NULL)
		*num_subkeys = private_data->nk->num_subkeys;

	if (num_values != NULL)
		*num_values = private_data->nk->num_values;

	if (classname != NULL) {
		if (private_data->nk->clsname_offset != -1) {
			DATA_BLOB data = hbin_get(private_data->hive,
						  private_data->nk->clsname_offset);
			*classname = talloc_strndup(mem_ctx,
						    (char*)data.data,
						    private_data->nk->clsname_length);
		} else
			*classname = NULL;
	}

	/* TODO: Last mod time */

	/* TODO: max valnamelen */
	
	/* TODO: max valbufsize */

	/* TODO: max subkeynamelen */

	return WERR_OK;
}

static struct regf_key_data *regf_get_key(TALLOC_CTX *ctx,
					  struct regf_data *regf,
					  uint32_t offset)
{
	struct nk_block *nk;
	struct regf_key_data *ret;

	ret = talloc_zero(ctx, struct regf_key_data);
	ret->key.ops = &reg_backend_regf;
	ret->hive = talloc_reference(ret, regf);
	ret->offset = offset;
	nk = talloc(ret, struct nk_block);
	if (nk == NULL)
		return NULL;

	ret->nk = nk;

	if (!hbin_get_tdr(regf, offset, nk,
			  (tdr_pull_fn_t)tdr_pull_nk_block, nk)) {
		DEBUG(0, ("Unable to find HBIN data for offset %d\n", offset));
		return NULL;
	}

	if (strcmp(nk->header, "nk") != 0) {
		DEBUG(0, ("Expected nk record, got %s\n", nk->header));
		talloc_free(ret);
		return NULL;
	}

	return ret;
}


static WERROR regf_get_value(TALLOC_CTX *ctx, struct hive_key *key,
			     int idx, const char **name,
			     uint32_t *data_type, DATA_BLOB *data)
{
	const struct regf_key_data *private_data =
			(const struct regf_key_data *)key;
	struct vk_block *vk;
	struct regf_data *regf = private_data->hive;
	uint32_t vk_offset;
	DATA_BLOB tmp;

	if (idx >= private_data->nk->num_values)
		return WERR_NO_MORE_ITEMS;

	tmp = hbin_get(regf, private_data->nk->values_offset);
	if (!tmp.data) {
		DEBUG(0, ("Unable to find value list\n"));
		return WERR_GENERAL_FAILURE;
	}

	if (tmp.length < private_data->nk->num_values * 4) {
		DEBUG(1, ("Value counts mismatch\n"));
	}

	vk_offset = IVAL(tmp.data, idx * 4);

	vk = talloc(NULL, struct vk_block);
	W_ERROR_HAVE_NO_MEMORY(vk);

	if (!hbin_get_tdr(regf, vk_offset, vk,
			  (tdr_pull_fn_t)tdr_pull_vk_block, vk)) {
		DEBUG(0, ("Unable to get VK block at %d\n", vk_offset));
		talloc_free(vk);
		return WERR_GENERAL_FAILURE;
	}

	/* FIXME: name character set ?*/
	if (name != NULL)
		*name = talloc_strndup(ctx, vk->data_name, vk->name_length);

	if (data_type != NULL)
		*data_type = vk->data_type;

	if (vk->data_length & 0x80000000) {
		vk->data_length &=~0x80000000;
		data->data = (uint8_t *)talloc_memdup(ctx, (uint8_t *)&vk->data_offset, vk->data_length);
		data->length = vk->data_length;
	} else {
		*data = hbin_get(regf, vk->data_offset);
	}

	if (data->length < vk->data_length) {
		DEBUG(1, ("Read data less than indicated data length!\n"));
	}

	talloc_free(vk);

	return WERR_OK;
}

static WERROR regf_get_value_by_name(TALLOC_CTX *mem_ctx,
				     struct hive_key *key, const char *name,
				     uint32_t *type, DATA_BLOB *data)
{
	int i;
	const char *vname;
	WERROR error;

	/* FIXME: Do binary search? Is this list sorted at all? */

	for (i = 0; W_ERROR_IS_OK(error = regf_get_value(mem_ctx, key, i,
							 &vname, type, data));
							 i++) {
		if (!strcmp(vname, name))
			return WERR_OK;
	}

	if (W_ERROR_EQUAL(error, WERR_NO_MORE_ITEMS))
		return WERR_BADFILE;

	return error;
}


static WERROR regf_get_subkey_by_index(TALLOC_CTX *ctx,
				       const struct hive_key *key,
				       uint32_t idx, const char **name,
				       const char **classname,
				       NTTIME *last_mod_time)
{
	DATA_BLOB data;
	struct regf_key_data *ret;
	const struct regf_key_data *private_data = (const struct regf_key_data *)key;
	struct nk_block *nk = private_data->nk;
	uint32_t key_off=0;

	if (idx >= nk->num_subkeys)
		return WERR_NO_MORE_ITEMS;

	data = hbin_get(private_data->hive, nk->subkeys_offset);
	if (!data.data) {
		DEBUG(0, ("Unable to find subkey list\n"));
		return WERR_GENERAL_FAILURE;
	}

	if (!strncmp((char *)data.data, "li", 2)) {
		struct li_block li;
		struct tdr_pull *pull = tdr_pull_init(private_data->hive, private_data->hive->iconv_convenience);

		DEBUG(10, ("Subkeys in LI list\n"));
		pull->data = data;

		if (NT_STATUS_IS_ERR(tdr_pull_li_block(pull, nk, &li))) {
			DEBUG(0, ("Error parsing LI list\n"));
			talloc_free(pull);
			return WERR_GENERAL_FAILURE;
		}
		talloc_free(pull);
		SMB_ASSERT(!strncmp(li.header, "li", 2));

		if (li.key_count != nk->num_subkeys) {
			DEBUG(0, ("Subkey counts don't match\n"));
			return WERR_GENERAL_FAILURE;
		}
		key_off = li.nk_offset[idx];

	} else if (!strncmp((char *)data.data, "lf", 2)) {
		struct lf_block lf;
		struct tdr_pull *pull = tdr_pull_init(private_data->hive, private_data->hive->iconv_convenience);

		DEBUG(10, ("Subkeys in LF list\n"));
		pull->data = data;

		if (NT_STATUS_IS_ERR(tdr_pull_lf_block(pull, nk, &lf))) {
			DEBUG(0, ("Error parsing LF list\n"));
			talloc_free(pull);
			return WERR_GENERAL_FAILURE;
		}
		talloc_free(pull);
		SMB_ASSERT(!strncmp(lf.header, "lf", 2));

		if (lf.key_count != nk->num_subkeys) {
			DEBUG(0, ("Subkey counts don't match\n"));
			return WERR_GENERAL_FAILURE;
		}

		key_off = lf.hr[idx].nk_offset;
	} else if (!strncmp((char *)data.data, "lh", 2)) {
		struct lh_block lh;
		struct tdr_pull *pull = tdr_pull_init(private_data->hive, private_data->hive->iconv_convenience);

		DEBUG(10, ("Subkeys in LH list\n"));
		pull->data = data;

		if (NT_STATUS_IS_ERR(tdr_pull_lh_block(pull, nk, &lh))) {
			DEBUG(0, ("Error parsing LH list\n"));
			talloc_free(pull);
			return WERR_GENERAL_FAILURE;
		}
		talloc_free(pull);
		SMB_ASSERT(!strncmp(lh.header, "lh", 2));

		if (lh.key_count != nk->num_subkeys) {
			DEBUG(0, ("Subkey counts don't match\n"));
			return WERR_GENERAL_FAILURE;
		}
		key_off = lh.hr[idx].nk_offset;
	} else if (!strncmp((char *)data.data, "ri", 2)) {
		struct ri_block ri;
		struct tdr_pull *pull = tdr_pull_init(ctx, private_data->hive->iconv_convenience);
		uint16_t i;
		uint16_t sublist_count = 0;

		DEBUG(10, ("Subkeys in RI list\n"));
		pull->data = data;

		if (NT_STATUS_IS_ERR(tdr_pull_ri_block(pull, nk, &ri))) {
			DEBUG(0, ("Error parsing RI list\n"));
			talloc_free(pull);
			return WERR_GENERAL_FAILURE;
		}
		SMB_ASSERT(!strncmp(ri.header, "ri", 2));

		for (i = 0; i < ri.key_count; i++) {
			DATA_BLOB list_data;

			/* Get sublist data blob */
			list_data = hbin_get(private_data->hive, ri.offset[i]);
			if (!list_data.data) {
				DEBUG(0, ("Error getting RI list."));
				talloc_free(pull);
				return WERR_GENERAL_FAILURE;
			}

			pull->data = list_data;

			if (!strncmp((char *)list_data.data, "li", 2)) {
				struct li_block li;

				DEBUG(10, ("Subkeys in RI->LI list\n"));

				if (NT_STATUS_IS_ERR(tdr_pull_li_block(pull,
								       nk,
								       &li))) {
					DEBUG(0, ("Error parsing LI list from RI\n"));
					talloc_free(pull);
					return WERR_GENERAL_FAILURE;
				}
				SMB_ASSERT(!strncmp(li.header, "li", 2));

				/* Advance to next sublist if necessary */
				if (idx >= sublist_count + li.key_count) {
					sublist_count += li.key_count;
					continue;
				}
				key_off = li.nk_offset[idx - sublist_count];
				sublist_count += li.key_count;
				break;
			} else if (!strncmp((char *)list_data.data, "lh", 2)) {
				struct lh_block lh;

				DEBUG(10, ("Subkeys in RI->LH list\n"));

				if (NT_STATUS_IS_ERR(tdr_pull_lh_block(pull,
								       nk,
								       &lh))) {
					DEBUG(0, ("Error parsing LH list from RI\n"));
					talloc_free(pull);
					return WERR_GENERAL_FAILURE;
				}
				SMB_ASSERT(!strncmp(lh.header, "lh", 2));

				/* Advance to next sublist if necessary */
				if (idx >= sublist_count + lh.key_count) {
					sublist_count += lh.key_count;
					continue;
				}
				key_off = lh.hr[idx - sublist_count].nk_offset;
				sublist_count += lh.key_count;
				break;
			} else {
				DEBUG(0,("Unknown sublist in ri block\n"));
				talloc_free(pull);

				return WERR_GENERAL_FAILURE;
			}

		}
		talloc_free(pull);


		if (idx > sublist_count) {
			return WERR_NO_MORE_ITEMS;
		}

	} else {
		DEBUG(0, ("Unknown type for subkey list (0x%04x): %c%c\n",
				  nk->subkeys_offset, data.data[0], data.data[1]));
		return WERR_GENERAL_FAILURE;
	}

	ret = regf_get_key (ctx, private_data->hive, key_off);

	if (classname != NULL) {
		if (ret->nk->clsname_offset != -1) {
			DATA_BLOB db = hbin_get(ret->hive,
						ret->nk->clsname_offset);
			*classname = talloc_strndup(ctx,
						    (char*)db.data,
						    ret->nk->clsname_length);
		} else
			*classname = NULL;
	}

	if (last_mod_time != NULL)
		*last_mod_time = ret->nk->last_change;

	if (name != NULL)
		*name = talloc_steal(ctx, ret->nk->key_name);

	talloc_free(ret);

	return WERR_OK;
}

static WERROR regf_match_subkey_by_name(TALLOC_CTX *ctx,
					const struct hive_key *key,
					uint32_t offset,
					const char *name, uint32_t *ret)
{
	DATA_BLOB subkey_data;
	struct nk_block subkey;
	struct tdr_pull *pull;
	const struct regf_key_data *private_data =
		(const struct regf_key_data *)key;

	subkey_data = hbin_get(private_data->hive, offset);
	if (!subkey_data.data) {
		DEBUG(0, ("Unable to retrieve subkey HBIN\n"));
		return WERR_GENERAL_FAILURE;
	}

	pull = tdr_pull_init(ctx, private_data->hive->iconv_convenience);

	pull->data = subkey_data;

	if (NT_STATUS_IS_ERR(tdr_pull_nk_block(pull, ctx, &subkey))) {
		DEBUG(0, ("Error parsing NK structure.\n"));
		talloc_free(pull);
		return WERR_GENERAL_FAILURE;
	}
	talloc_free(pull);

	if (strncmp(subkey.header, "nk", 2)) {
		DEBUG(0, ("Not an NK structure.\n"));
		return WERR_GENERAL_FAILURE;
	}

	if (!strcasecmp(subkey.key_name, name)) {
		*ret = offset;
	} else {
		*ret = 0;
	}
	return WERR_OK;
}

static WERROR regf_get_subkey_by_name(TALLOC_CTX *ctx,
				      const struct hive_key *key,
				      const char *name,
				      struct hive_key **ret)
{
	DATA_BLOB data;
	const struct regf_key_data *private_data =
		(const struct regf_key_data *)key;
	struct nk_block *nk = private_data->nk;
	uint32_t key_off = 0;

	data = hbin_get(private_data->hive, nk->subkeys_offset);
	if (!data.data) {
		DEBUG(0, ("Unable to find subkey list\n"));
		return WERR_GENERAL_FAILURE;
	}

	if (!strncmp((char *)data.data, "li", 2)) {
		struct li_block li;
		struct tdr_pull *pull = tdr_pull_init(ctx, private_data->hive->iconv_convenience);
		uint16_t i;

		DEBUG(10, ("Subkeys in LI list\n"));
		pull->data = data;

		if (NT_STATUS_IS_ERR(tdr_pull_li_block(pull, nk, &li))) {
			DEBUG(0, ("Error parsing LI list\n"));
			talloc_free(pull);
			return WERR_GENERAL_FAILURE;
		}
		talloc_free(pull);
		SMB_ASSERT(!strncmp(li.header, "li", 2));

		if (li.key_count != nk->num_subkeys) {
			DEBUG(0, ("Subkey counts don't match\n"));
			return WERR_GENERAL_FAILURE;
		}

		for (i = 0; i < li.key_count; i++) {
			W_ERROR_NOT_OK_RETURN(regf_match_subkey_by_name(nk, key,
									li.nk_offset[i],
									name,
									&key_off));
			if (key_off != 0)
				break;
		}
		if (key_off == 0)
			return WERR_BADFILE;
	} else if (!strncmp((char *)data.data, "lf", 2)) {
		struct lf_block lf;
		struct tdr_pull *pull = tdr_pull_init(ctx, private_data->hive->iconv_convenience);
		uint16_t i;

		DEBUG(10, ("Subkeys in LF list\n"));
		pull->data = data;

		if (NT_STATUS_IS_ERR(tdr_pull_lf_block(pull, nk, &lf))) {
			DEBUG(0, ("Error parsing LF list\n"));
			talloc_free(pull);
			return WERR_GENERAL_FAILURE;
		}
		talloc_free(pull);
		SMB_ASSERT(!strncmp(lf.header, "lf", 2));

		if (lf.key_count != nk->num_subkeys) {
			DEBUG(0, ("Subkey counts don't match\n"));
			return WERR_GENERAL_FAILURE;
		}

		for (i = 0; i < lf.key_count; i++) {
			if (strncmp(lf.hr[i].hash, name, 4)) {
				continue;
			}
			W_ERROR_NOT_OK_RETURN(regf_match_subkey_by_name(nk,
									key,
									lf.hr[i].nk_offset,
									name,
									&key_off));
			if (key_off != 0)
				break;
		}
		if (key_off == 0)
			return WERR_BADFILE;
	} else if (!strncmp((char *)data.data, "lh", 2)) {
		struct lh_block lh;
		struct tdr_pull *pull = tdr_pull_init(ctx, private_data->hive->iconv_convenience);
		uint16_t i;
		uint32_t hash;

		DEBUG(10, ("Subkeys in LH list\n"));
		pull->data = data;

		if (NT_STATUS_IS_ERR(tdr_pull_lh_block(pull, nk, &lh))) {
			DEBUG(0, ("Error parsing LH list\n"));
			talloc_free(pull);
			return WERR_GENERAL_FAILURE;
		}
		talloc_free(pull);
		SMB_ASSERT(!strncmp(lh.header, "lh", 2));

		if (lh.key_count != nk->num_subkeys) {
			DEBUG(0, ("Subkey counts don't match\n"));
			return WERR_GENERAL_FAILURE;
		}

		hash = regf_create_lh_hash(name);
		for (i = 0; i < lh.key_count; i++) {
			if (lh.hr[i].base37 != hash) {
				continue;
			}
			W_ERROR_NOT_OK_RETURN(regf_match_subkey_by_name(nk,
									key,
									lh.hr[i].nk_offset,
									name,
									&key_off));
			if (key_off != 0)
				break;
		}
		if (key_off == 0)
			return WERR_BADFILE;
	} else if (!strncmp((char *)data.data, "ri", 2)) {
		struct ri_block ri;
		struct tdr_pull *pull = tdr_pull_init(ctx, private_data->hive->iconv_convenience);
		uint16_t i, j;

		DEBUG(10, ("Subkeys in RI list\n"));
		pull->data = data;

		if (NT_STATUS_IS_ERR(tdr_pull_ri_block(pull, nk, &ri))) {
			DEBUG(0, ("Error parsing RI list\n"));
			talloc_free(pull);
			return WERR_GENERAL_FAILURE;
		}
		SMB_ASSERT(!strncmp(ri.header, "ri", 2));

		for (i = 0; i < ri.key_count; i++) {
			DATA_BLOB list_data;

			/* Get sublist data blob */
			list_data = hbin_get(private_data->hive, ri.offset[i]);
			if (list_data.data == NULL) {
				DEBUG(0, ("Error getting RI list."));
				talloc_free(pull);
				return WERR_GENERAL_FAILURE;
			}

			pull->data = list_data;

			if (!strncmp((char *)list_data.data, "li", 2)) {
				struct li_block li;

				if (NT_STATUS_IS_ERR(tdr_pull_li_block(pull,
								       nk,
								       &li))) {
					DEBUG(0, ("Error parsing LI list from RI\n"));
					talloc_free(pull);
					return WERR_GENERAL_FAILURE;
				}
				SMB_ASSERT(!strncmp(li.header, "li", 2));

				for (j = 0; j < li.key_count; j++) {
					W_ERROR_NOT_OK_RETURN(regf_match_subkey_by_name(nk, key,
											li.nk_offset[j],
											name,
											&key_off));
					if (key_off)
						break;
				}
			} else if (!strncmp((char *)list_data.data, "lh", 2)) {
				struct lh_block lh;
				uint32_t hash;

				if (NT_STATUS_IS_ERR(tdr_pull_lh_block(pull,
								       nk,
								       &lh))) {
					DEBUG(0, ("Error parsing LH list from RI\n"));
					talloc_free(pull);
					return WERR_GENERAL_FAILURE;
				}
				SMB_ASSERT(!strncmp(lh.header, "lh", 2));

				hash = regf_create_lh_hash(name);
				for (j = 0; j < lh.key_count; j++) {
					if (lh.hr[j].base37 != hash) {
						continue;
					}
					W_ERROR_NOT_OK_RETURN(regf_match_subkey_by_name(nk, key,
											lh.hr[j].nk_offset,
											name,
											&key_off));
					if (key_off)
						break;
				}
			}
			if (key_off)
				break;
		}
		talloc_free(pull);
		if (!key_off)
			return WERR_BADFILE;
	} else {
		DEBUG(0, ("Unknown subkey list type.\n"));
		return WERR_GENERAL_FAILURE;
	}

	*ret = (struct hive_key *)regf_get_key(ctx, private_data->hive,
					       key_off);
	return WERR_OK;
}

static WERROR regf_set_sec_desc(struct hive_key *key,
				const struct security_descriptor *sec_desc)
{
	const struct regf_key_data *private_data =
		(const struct regf_key_data *)key;
	struct sk_block cur_sk, sk, new_sk;
	struct regf_data *regf = private_data->hive;
	struct nk_block root;
	DATA_BLOB data;
	uint32_t sk_offset, cur_sk_offset;
	bool update_cur_sk = false;

	/* Get the root nk */
 	hbin_get_tdr(regf, regf->header->data_offset, regf,
		     (tdr_pull_fn_t) tdr_pull_nk_block, &root);

	/* Push the security descriptor to a blob */
	if (!NDR_ERR_CODE_IS_SUCCESS(ndr_push_struct_blob(&data, regf, NULL, 
							  sec_desc, (ndr_push_flags_fn_t)ndr_push_security_descriptor))) {
		DEBUG(0, ("Unable to push security descriptor\n"));
		return WERR_GENERAL_FAILURE;
	}

	/* Get the current security descriptor for the key */
	if (!hbin_get_tdr(regf, private_data->nk->sk_offset, regf,
			  (tdr_pull_fn_t) tdr_pull_sk_block, &cur_sk)) {
		DEBUG(0, ("Unable to find security descriptor for current key\n"));
		return WERR_BADFILE;
	}
	/* If there's no change, change nothing. */
	if (memcmp(data.data, cur_sk.sec_desc,
		   MIN(data.length, cur_sk.rec_size)) == 0) {
		return WERR_OK;
	}

	/* Delete the current sk if only this key is using it */
	if (cur_sk.ref_cnt == 1) {
		/* Get the previous security descriptor for the key */
		if (!hbin_get_tdr(regf, cur_sk.prev_offset, regf,
				  (tdr_pull_fn_t) tdr_pull_sk_block, &sk)) {
			DEBUG(0, ("Unable to find prev security descriptor for current key\n"));
			return WERR_BADFILE;
		}
		/* Change and store the previous security descriptor */
		sk.next_offset = cur_sk.next_offset;
		hbin_store_tdr_resize(regf, (tdr_push_fn_t) tdr_push_sk_block,
				      cur_sk.prev_offset, &sk);

		/* Get the next security descriptor for the key */
		if (!hbin_get_tdr(regf, cur_sk.next_offset, regf,
				  (tdr_pull_fn_t) tdr_pull_sk_block, &sk)) {
			DEBUG(0, ("Unable to find next security descriptor for current key\n"));
			return WERR_BADFILE;
		}
		/* Change and store the next security descriptor */
		sk.prev_offset = cur_sk.prev_offset;
		hbin_store_tdr_resize(regf, (tdr_push_fn_t) tdr_push_sk_block,
				      cur_sk.next_offset, &sk);

		hbin_free(regf, private_data->nk->sk_offset);
	} else {
		/* This key will no longer be referring to this sk */
		cur_sk.ref_cnt--;
		update_cur_sk = true;
	}

	sk_offset = root.sk_offset;

	do {
		cur_sk_offset = sk_offset;
		if (!hbin_get_tdr(regf, sk_offset, regf,
				  (tdr_pull_fn_t) tdr_pull_sk_block, &sk)) {
			DEBUG(0, ("Unable to find security descriptor\n"));
			return WERR_BADFILE;
		}
		if (memcmp(data.data, sk.sec_desc, MIN(data.length, sk.rec_size)) == 0) {
			private_data->nk->sk_offset = sk_offset;
			sk.ref_cnt++;
			hbin_store_tdr_resize(regf,
					      (tdr_push_fn_t) tdr_push_sk_block,
					      sk_offset, &sk);
			hbin_store_tdr_resize(regf,
					      (tdr_push_fn_t) tdr_push_nk_block,
					      private_data->offset,
					      private_data->nk);
			return WERR_OK;
		}
		sk_offset = sk.next_offset;
	} while (sk_offset != root.sk_offset);

	ZERO_STRUCT(new_sk);
	new_sk.header = "sk";
	new_sk.prev_offset = cur_sk_offset;
	new_sk.next_offset = root.sk_offset;
	new_sk.ref_cnt = 1;
	new_sk.rec_size = data.length;
	new_sk.sec_desc = data.data;

	sk_offset = hbin_store_tdr(regf,
				   (tdr_push_fn_t) tdr_push_sk_block,
				   &new_sk);
	if (sk_offset == -1) {
		DEBUG(0, ("Error storing sk block\n"));
		return WERR_GENERAL_FAILURE;
	}
	private_data->nk->sk_offset = sk_offset;

	if (update_cur_sk) {
		hbin_store_tdr_resize(regf,
				      (tdr_push_fn_t) tdr_push_sk_block,
				      private_data->nk->sk_offset, &cur_sk);
	}

	/* Get the previous security descriptor for the key */
	if (!hbin_get_tdr(regf, new_sk.prev_offset, regf,
			  (tdr_pull_fn_t) tdr_pull_sk_block, &sk)) {
		DEBUG(0, ("Unable to find security descriptor for previous key\n"));
		return WERR_BADFILE;
	}
	/* Change and store the previous security descriptor */
	sk.next_offset = sk_offset;
	hbin_store_tdr_resize(regf,
			      (tdr_push_fn_t) tdr_push_sk_block,
			      cur_sk.prev_offset, &sk);

	/* Get the next security descriptor for the key (always root, as we append) */
	if (!hbin_get_tdr(regf, new_sk.next_offset, regf,
			  (tdr_pull_fn_t) tdr_pull_sk_block, &sk)) {
		DEBUG(0, ("Unable to find security descriptor for current key\n"));
		return WERR_BADFILE;
	}
	/* Change and store the next security descriptor (always root, as we append) */
	sk.prev_offset = sk_offset;
	hbin_store_tdr_resize(regf,
			      (tdr_push_fn_t) tdr_push_sk_block,
			      root.sk_offset, &sk);


	/* Store the nk. */
	hbin_store_tdr_resize(regf,
			      (tdr_push_fn_t) tdr_push_sk_block,
			      private_data->offset, private_data->nk);
	return WERR_OK;
}

static WERROR regf_get_sec_desc(TALLOC_CTX *ctx, const struct hive_key *key,
				struct security_descriptor **sd)
{
	const struct regf_key_data *private_data =
		(const struct regf_key_data *)key;
	struct sk_block sk;
	struct regf_data *regf = private_data->hive;
	DATA_BLOB data;

	if (!hbin_get_tdr(regf, private_data->nk->sk_offset, ctx,
			  (tdr_pull_fn_t) tdr_pull_sk_block, &sk)) {
		DEBUG(0, ("Unable to find security descriptor\n"));
		return WERR_GENERAL_FAILURE;
	}

	if (strcmp(sk.header, "sk") != 0) {
		DEBUG(0, ("Expected 'sk', got '%s'\n", sk.header));
		return WERR_GENERAL_FAILURE;
	}

	*sd = talloc(ctx, struct security_descriptor);
	W_ERROR_HAVE_NO_MEMORY(*sd);

	data.data = sk.sec_desc;
	data.length = sk.rec_size;
	if (!NDR_ERR_CODE_IS_SUCCESS(ndr_pull_struct_blob(&data, ctx, NULL, *sd,
						  (ndr_pull_flags_fn_t)ndr_pull_security_descriptor))) {
		DEBUG(0, ("Error parsing security descriptor\n"));
		return WERR_GENERAL_FAILURE;
	}

	return WERR_OK;
}

static WERROR regf_sl_add_entry(struct regf_data *regf, uint32_t list_offset,
				const char *name,
				uint32_t key_offset, uint32_t *ret)
{
	DATA_BLOB data;

	/* Create a new key if necessary */
	if (list_offset == -1) {
		if (regf->header->version.major != 1) {
			DEBUG(0, ("Can't store keys in unknown registry format\n"));
			return WERR_NOT_SUPPORTED;
		}
		if (regf->header->version.minor < 3) {
			/* Store LI */
			struct li_block li;
			ZERO_STRUCT(li);
			li.header = "li";
			li.key_count = 1;

			li.nk_offset = talloc_array(regf, uint32_t, 1);
			W_ERROR_HAVE_NO_MEMORY(li.nk_offset);
			li.nk_offset[0] = key_offset;

			*ret = hbin_store_tdr(regf,
					      (tdr_push_fn_t) tdr_push_li_block,
					      &li);

			talloc_free(li.nk_offset);
		} else if (regf->header->version.minor == 3 ||
			   regf->header->version.minor == 4) {
			/* Store LF */
			struct lf_block lf;
			ZERO_STRUCT(lf);
			lf.header = "lf";
			lf.key_count = 1;

			lf.hr = talloc_array(regf, struct hash_record, 1);
			W_ERROR_HAVE_NO_MEMORY(lf.hr);
			lf.hr[0].nk_offset = key_offset;
			lf.hr[0].hash = talloc_strndup(lf.hr, name, 4);
			W_ERROR_HAVE_NO_MEMORY(lf.hr[0].hash);

			*ret = hbin_store_tdr(regf,
					      (tdr_push_fn_t) tdr_push_lf_block,
					      &lf);

			talloc_free(lf.hr);
		} else if (regf->header->version.minor == 5) {
			/* Store LH */
			struct lh_block lh;
			ZERO_STRUCT(lh);
			lh.header = "lh";
			lh.key_count = 1;

			lh.hr = talloc_array(regf, struct lh_hash, 1);
			W_ERROR_HAVE_NO_MEMORY(lh.hr);
			lh.hr[0].nk_offset = key_offset;
			lh.hr[0].base37 = regf_create_lh_hash(name);

			*ret = hbin_store_tdr(regf,
					      (tdr_push_fn_t) tdr_push_lh_block,
					      &lh);

			talloc_free(lh.hr);
		}
		return WERR_OK;
	}

	data = hbin_get(regf, list_offset);
	if (!data.data) {
		DEBUG(0, ("Unable to find subkey list\n"));
		return WERR_BADFILE;
	}

	if (!strncmp((char *)data.data, "li", 2)) {
		struct tdr_pull *pull = tdr_pull_init(regf, regf->iconv_convenience);
		struct li_block li;

		pull->data = data;

		if (NT_STATUS_IS_ERR(tdr_pull_li_block(pull, regf, &li))) {
			DEBUG(0, ("Error parsing LI list\n"));
			talloc_free(pull);
			return WERR_BADFILE;
		}
		talloc_free(pull);

		if (strncmp(li.header, "li", 2) != 0) {
			abort();
			DEBUG(0, ("LI header corrupt\n"));
			return WERR_BADFILE;
		}

		li.nk_offset = talloc_realloc(regf, li.nk_offset,
					      uint32_t, li.key_count+1);
		W_ERROR_HAVE_NO_MEMORY(li.nk_offset);
		li.nk_offset[li.key_count] = key_offset;
		li.key_count++;
		*ret = hbin_store_tdr_resize(regf,
					     (tdr_push_fn_t)tdr_push_li_block,
					     list_offset, &li);

		talloc_free(li.nk_offset);
	} else if (!strncmp((char *)data.data, "lf", 2)) {
		struct tdr_pull *pull = tdr_pull_init(regf, regf->iconv_convenience);
		struct lf_block lf;

		pull->data = data;

		if (NT_STATUS_IS_ERR(tdr_pull_lf_block(pull, regf, &lf))) {
			DEBUG(0, ("Error parsing LF list\n"));
			talloc_free(pull);
			return WERR_BADFILE;
		}
		talloc_free(pull);
		SMB_ASSERT(!strncmp(lf.header, "lf", 2));

		lf.hr = talloc_realloc(regf, lf.hr, struct hash_record,
				       lf.key_count+1);
		W_ERROR_HAVE_NO_MEMORY(lf.hr);
		lf.hr[lf.key_count].nk_offset = key_offset;
		lf.hr[lf.key_count].hash = talloc_strndup(lf.hr, name, 4);
		W_ERROR_HAVE_NO_MEMORY(lf.hr[lf.key_count].hash);
		lf.key_count++;
		*ret = hbin_store_tdr_resize(regf,
					     (tdr_push_fn_t)tdr_push_lf_block,
					     list_offset, &lf);

		talloc_free(lf.hr);
	} else if (!strncmp((char *)data.data, "lh", 2)) {
		struct tdr_pull *pull = tdr_pull_init(regf, regf->iconv_convenience);
		struct lh_block lh;

		pull->data = data;

		if (NT_STATUS_IS_ERR(tdr_pull_lh_block(pull, regf, &lh))) {
			DEBUG(0, ("Error parsing LH list\n"));
			talloc_free(pull);
			return WERR_BADFILE;
		}
		talloc_free(pull);
		SMB_ASSERT(!strncmp(lh.header, "lh", 2));

		lh.hr = talloc_realloc(regf, lh.hr, struct lh_hash,
				       lh.key_count+1);
		W_ERROR_HAVE_NO_MEMORY(lh.hr);
		lh.hr[lh.key_count].nk_offset = key_offset;
		lh.hr[lh.key_count].base37 = regf_create_lh_hash(name);
		lh.key_count++;
		*ret = hbin_store_tdr_resize(regf,
					     (tdr_push_fn_t)tdr_push_lh_block,
					     list_offset, &lh);

		talloc_free(lh.hr);
	} else if (!strncmp((char *)data.data, "ri", 2)) {
		/* FIXME */
		DEBUG(0, ("Adding to 'ri' subkey list is not supported yet.\n"));
		return WERR_NOT_SUPPORTED;
	} else {
		DEBUG(0, ("Cannot add to unknown subkey list\n"));
		return WERR_BADFILE;
	}

	return WERR_OK;
}

static WERROR regf_sl_del_entry(struct regf_data *regf, uint32_t list_offset,
				uint32_t key_offset, uint32_t *ret)
{
	DATA_BLOB data;

	data = hbin_get(regf, list_offset);
	if (!data.data) {
		DEBUG(0, ("Unable to find subkey list\n"));
		return WERR_BADFILE;
	}

	if (strncmp((char *)data.data, "li", 2) == 0) {
		struct li_block li;
		struct tdr_pull *pull = tdr_pull_init(regf, regf->iconv_convenience);
		uint16_t i;
		bool found_offset = false;

		DEBUG(10, ("Subkeys in LI list\n"));

		pull->data = data;

		if (NT_STATUS_IS_ERR(tdr_pull_li_block(pull, regf, &li))) {
			DEBUG(0, ("Error parsing LI list\n"));
			talloc_free(pull);
			return WERR_BADFILE;
		}
		talloc_free(pull);

		SMB_ASSERT(!strncmp(li.header, "li", 2));

		for (i = 0; i < li.key_count; i++) {
			if (found_offset) {
				li.nk_offset[i-1] = li.nk_offset[i];
			}
			if (li.nk_offset[i] == key_offset) {
				found_offset = true;
				continue;
			}
		}
		if (!found_offset) {
			DEBUG(2, ("Subkey not found\n"));
			return WERR_BADFILE;
		}
		li.key_count--;

		/* If the there are no entries left, free the subkey list */
		if (li.key_count == 0) {
			hbin_free(regf, list_offset);
			*ret = -1;
		}

		/* Store li block */
		*ret = hbin_store_tdr_resize(regf,
					     (tdr_push_fn_t) tdr_push_li_block,
					     list_offset, &li);
	} else if (strncmp((char *)data.data, "lf", 2) == 0) {
		struct lf_block lf;
		struct tdr_pull *pull = tdr_pull_init(regf, regf->iconv_convenience);
		uint16_t i;
		bool found_offset = false;

		DEBUG(10, ("Subkeys in LF list\n"));

		pull->data = data;

		if (NT_STATUS_IS_ERR(tdr_pull_lf_block(pull, regf, &lf))) {
			DEBUG(0, ("Error parsing LF list\n"));
			talloc_free(pull);
			return WERR_BADFILE;
		}
		talloc_free(pull);

		SMB_ASSERT(!strncmp(lf.header, "lf", 2));

		for (i = 0; i < lf.key_count; i++) {
			if (found_offset) {
				lf.hr[i-1] = lf.hr[i];
				continue;
			}
			if (lf.hr[i].nk_offset == key_offset) {
				found_offset = 1;
				continue;
			}
		}
		if (!found_offset) {
			DEBUG(2, ("Subkey not found\n"));
			return WERR_BADFILE;
		}
		lf.key_count--;

		/* If the there are no entries left, free the subkey list */
		if (lf.key_count == 0) {
			hbin_free(regf, list_offset);
			*ret = -1;
			return WERR_OK;
		}

		/* Store lf block */
		*ret = hbin_store_tdr_resize(regf,
					     (tdr_push_fn_t) tdr_push_lf_block,
					     list_offset, &lf);
	} else if (strncmp((char *)data.data, "lh", 2) == 0) {
		struct lh_block lh;
		struct tdr_pull *pull = tdr_pull_init(regf, regf->iconv_convenience);
		uint16_t i;
		bool found_offset = false;

		DEBUG(10, ("Subkeys in LH list\n"));

		pull->data = data;

		if (NT_STATUS_IS_ERR(tdr_pull_lh_block(pull, regf, &lh))) {
			DEBUG(0, ("Error parsing LF list\n"));
			talloc_free(pull);
			return WERR_BADFILE;
		}
		talloc_free(pull);

		SMB_ASSERT(!strncmp(lh.header, "lh", 2));

		for (i = 0; i < lh.key_count; i++) {
			if (found_offset) {
				lh.hr[i-1] = lh.hr[i];
				continue;
			}
			if (lh.hr[i].nk_offset == key_offset) {
				found_offset = 1;
				continue;
			}
		}
		if (!found_offset) {
			DEBUG(0, ("Subkey not found\n"));
			return WERR_BADFILE;
		}
		lh.key_count--;

		/* If the there are no entries left, free the subkey list */
		if (lh.key_count == 0) {
			hbin_free(regf, list_offset);
			*ret = -1;
			return WERR_OK;
		}

		/* Store lh block */
		*ret = hbin_store_tdr_resize(regf,
					     (tdr_push_fn_t) tdr_push_lh_block,
					     list_offset, &lh);
	} else if (strncmp((char *)data.data, "ri", 2) == 0) {
		/* FIXME */
		DEBUG(0, ("Sorry, deletion from ri block is not supported yet.\n"));
		return WERR_NOT_SUPPORTED;
	} else {
		DEBUG (0, ("Unknown header found in subkey list.\n"));
		return WERR_BADFILE;
	}
	return WERR_OK;
}

static WERROR regf_del_value (struct hive_key *key, const char *name)
{
	struct regf_key_data *private_data = (struct regf_key_data *)key;
	struct regf_data *regf = private_data->hive;
	struct nk_block *nk = private_data->nk;
	struct vk_block vk;
	uint32_t vk_offset;
	bool found_offset = false;
	DATA_BLOB values;
	uint32_t i;

	if (nk->values_offset == -1) {
		return WERR_BADFILE;
	}

	values = hbin_get(regf, nk->values_offset);

	for (i = 0; i < nk->num_values; i++) {
		if (found_offset) {
			((uint32_t *)values.data)[i-1] = ((uint32_t *) values.data)[i];
		} else {
			vk_offset = IVAL(values.data, i * 4);
			if (!hbin_get_tdr(regf, vk_offset, private_data,
					  (tdr_pull_fn_t)tdr_pull_vk_block,
					  &vk)) {
				DEBUG(0, ("Unable to get VK block at %d\n",
					vk_offset));
				return WERR_BADFILE;
			}
			if (strcmp(vk.data_name, name) == 0) {
				hbin_free(regf, vk_offset);
				found_offset = true;
			}
		}
	}
	if (!found_offset) {
		return WERR_BADFILE;
	} else {
		nk->num_values--;
		values.length = (nk->num_values)*4;
	}

	/* Store values list and nk */
	if (nk->num_values == 0) {
		hbin_free(regf, nk->values_offset);
		nk->values_offset = -1;
	} else {
		nk->values_offset = hbin_store_resize(regf,
						      nk->values_offset,
						      values);
	}
	hbin_store_tdr_resize(regf, (tdr_push_fn_t) tdr_push_nk_block,
			      private_data->offset, nk);

	return regf_save_hbin(private_data->hive);
}


static WERROR regf_del_key(const struct hive_key *parent, const char *name)
{
	const struct regf_key_data *private_data =
		(const struct regf_key_data *)parent;
	struct regf_key_data *key;
	struct nk_block *parent_nk;
	WERROR error;

	SMB_ASSERT(private_data);

	parent_nk = private_data->nk;

	if (parent_nk->subkeys_offset == -1) {
		DEBUG(4, ("Subkey list is empty, this key cannot contain subkeys.\n"));
		return WERR_BADFILE;
	}

	/* Find the key */
	if (!W_ERROR_IS_OK(regf_get_subkey_by_name(parent_nk, parent, name,
						   (struct hive_key **)&key))) {
		DEBUG(2, ("Key '%s' not found\n", name));
		return WERR_BADFILE;
	}

	if (key->nk->subkeys_offset != -1) {
		char *sk_name;
		struct hive_key *sk = (struct hive_key *)key;
		int i = key->nk->num_subkeys;
		while (i--) {
			/* Get subkey information. */
			error = regf_get_subkey_by_index(parent_nk, sk, 0,
							 (const char **)&sk_name,
							 NULL, NULL);
			if (!W_ERROR_IS_OK(error)) {
				DEBUG(0, ("Can't retrieve subkey by index.\n"));
				return error;
			}

			/* Delete subkey. */
			error = regf_del_key(sk, sk_name);
			if (!W_ERROR_IS_OK(error)) {
				DEBUG(0, ("Can't delete key '%s'.\n", sk_name));
				return error;
			}

			talloc_free(sk_name);
		}
	}

	if (key->nk->values_offset != -1) {
		char *val_name;
		struct hive_key *sk = (struct hive_key *)key;
		DATA_BLOB data;
		int i = key->nk->num_values;
		while (i--) {
			/* Get value information. */
			error = regf_get_value(parent_nk, sk, 0,
					       (const char **)&val_name,
					       NULL, &data);
			if (!W_ERROR_IS_OK(error)) {
				DEBUG(0, ("Can't retrieve value by index.\n"));
				return error;
			}

			/* Delete value. */
			error = regf_del_value(sk, val_name);
			if (!W_ERROR_IS_OK(error)) {
				DEBUG(0, ("Can't delete value '%s'.\n", val_name));
				return error;
			}

			talloc_free(val_name);
		}
	}

	/* Delete it from the subkey list. */
	error = regf_sl_del_entry(private_data->hive, parent_nk->subkeys_offset,
				  key->offset, &parent_nk->subkeys_offset);
	if (!W_ERROR_IS_OK(error)) {
		DEBUG(0, ("Can't store new subkey list for parent key. Won't delete.\n"));
		return error;
	}

	/* Re-store parent key */
	parent_nk->num_subkeys--;
	hbin_store_tdr_resize(private_data->hive,
			      (tdr_push_fn_t) tdr_push_nk_block,
			      private_data->offset, parent_nk);

	if (key->nk->clsname_offset != -1) {
		hbin_free(private_data->hive, key->nk->clsname_offset);
	}
	hbin_free(private_data->hive, key->offset);

	return regf_save_hbin(private_data->hive);
}

static WERROR regf_add_key(TALLOC_CTX *ctx, const struct hive_key *parent,
			   const char *name, const char *classname,
			   struct security_descriptor *sec_desc,
			   struct hive_key **ret)
{
	const struct regf_key_data *private_data =
		(const struct regf_key_data *)parent;
	struct nk_block *parent_nk = private_data->nk, nk;
	struct nk_block *root;
	struct regf_data *regf = private_data->hive;
	uint32_t offset;
	WERROR error;

	nk.header = "nk";
	nk.type = REG_SUB_KEY;
	unix_to_nt_time(&nk.last_change, time(NULL));
	nk.uk1 = 0;
	nk.parent_offset = private_data->offset;
	nk.num_subkeys = 0;
	nk.uk2 = 0;
	nk.subkeys_offset = -1;
	nk.unknown_offset = -1;
	nk.num_values = 0;
	nk.values_offset = -1;
	memset(nk.unk3, 0, 5);
	nk.clsname_offset = -1; /* FIXME: fill in */
	nk.clsname_length = 0;
	nk.key_name = name;

	/* Get the security descriptor of the root key */
 	root = talloc_zero(ctx, struct nk_block);
	W_ERROR_HAVE_NO_MEMORY(root);

	if (!hbin_get_tdr(regf, regf->header->data_offset, root,
			  (tdr_pull_fn_t)tdr_pull_nk_block, root)) {
		DEBUG(0, ("Unable to find HBIN data for offset %d\n",
			regf->header->data_offset));
		return WERR_GENERAL_FAILURE;
	}
	nk.sk_offset = root->sk_offset;
	talloc_free(root);

	/* Store the new nk key */
	offset = hbin_store_tdr(regf, (tdr_push_fn_t) tdr_push_nk_block, &nk);

	error = regf_sl_add_entry(regf, parent_nk->subkeys_offset, name, offset,
				  &parent_nk->subkeys_offset);
	if (!W_ERROR_IS_OK(error)) {
		hbin_free(regf, offset);
		return error;
	}

	parent_nk->num_subkeys++;

	/* Since the subkey offset of the parent can change, store it again */
	hbin_store_tdr_resize(regf, (tdr_push_fn_t) tdr_push_nk_block,
						  nk.parent_offset, parent_nk);

	*ret = (struct hive_key *)regf_get_key(ctx, regf, offset);

	return regf_save_hbin(private_data->hive);
}

static WERROR regf_set_value(struct hive_key *key, const char *name,
			     uint32_t type, const DATA_BLOB data)
{
	struct regf_key_data *private_data = (struct regf_key_data *)key;
	struct regf_data *regf = private_data->hive;
	struct nk_block *nk = private_data->nk;
	struct vk_block vk;
	uint32_t i;
	uint32_t tmp_vk_offset, vk_offset, old_vk_offset = -1;
	DATA_BLOB values;

	ZERO_STRUCT(vk);

	/* find the value offset, if it exists */
	if (nk->values_offset != -1) {
		values = hbin_get(regf, nk->values_offset);

		for (i = 0; i < nk->num_values; i++) {
			tmp_vk_offset = IVAL(values.data, i * 4);
			if (!hbin_get_tdr(regf, tmp_vk_offset, private_data,
					  (tdr_pull_fn_t)tdr_pull_vk_block,
					  &vk)) {
				DEBUG(0, ("Unable to get VK block at %d\n",
					tmp_vk_offset));
				return WERR_GENERAL_FAILURE;
			}
			if (strcmp(vk.data_name, name) == 0) {
				old_vk_offset = tmp_vk_offset;
				break;
			}
		}
		/* Free data, if any */
		if (!(vk.data_length & 0x80000000)) {
			hbin_free(regf, vk.data_offset);
		}
	}
	if (old_vk_offset == -1) {
		vk.header = "vk";
		vk.name_length = strlen(name);
		if (name != NULL && name[0] != 0) {
			vk.flag = 1;
			vk.data_name = name;
		} else {
			vk.data_name = NULL;
			vk.flag = 0;
		}
	}
	/* Set the type and data */
	vk.data_length = data.length;
	vk.data_type = type;
	if (type == REG_DWORD) {
		vk.data_length |= 0x80000000;
		vk.data_offset = *(uint32_t *)data.data;
	} else {
		/* Store data somewhere */
		vk.data_offset = hbin_store(regf, data);
	}
	if (old_vk_offset == -1) {
		/* Store new vk */
		vk_offset = hbin_store_tdr(regf,
					   (tdr_push_fn_t) tdr_push_vk_block,
					   &vk);
	} else {
		/* Store vk at offset */
		vk_offset = hbin_store_tdr_resize(regf,
						  (tdr_push_fn_t) tdr_push_vk_block,
						  old_vk_offset ,&vk);
	}

	/* Re-allocate the value list */
	if (nk->values_offset == -1) {
		nk->values_offset = hbin_store_tdr(regf,
						   (tdr_push_fn_t) tdr_push_uint32,
						   &vk_offset);
		nk->num_values = 1;
	} else {

		/* Change if we're changing, otherwise we're adding the value */
		if (old_vk_offset != -1) {
			/* Find and overwrite the offset. */
			for (i = 0; i < nk->num_values; i++) {
				if (IVAL(values.data, i * 4) == old_vk_offset) {
					SIVAL(values.data, i * 4, vk_offset);
					break;
				}
			}
		} else {
			/* Create a new value list */
			DATA_BLOB value_list;

			value_list.length = (nk->num_values+1)*4;
			value_list.data = (uint8_t *)talloc_array(private_data,
								  uint32_t,
								  nk->num_values+1);
			W_ERROR_HAVE_NO_MEMORY(value_list.data);
			memcpy(value_list.data, values.data, nk->num_values * 4);

			SIVAL(value_list.data, nk->num_values * 4, vk_offset);
			nk->num_values++;
			nk->values_offset = hbin_store_resize(regf,
							      nk->values_offset,
							      value_list);
		}

	}
	hbin_store_tdr_resize(regf,
			      (tdr_push_fn_t) tdr_push_nk_block,
			      private_data->offset, nk);
	return regf_save_hbin(private_data->hive);
}

static WERROR regf_save_hbin(struct regf_data *regf)
{
	struct tdr_push *push = tdr_push_init(regf, regf->iconv_convenience);
	int i;

	W_ERROR_HAVE_NO_MEMORY(push);

	if (lseek(regf->fd, 0, SEEK_SET) == -1) {
		DEBUG(0, ("Error lseeking in regf file\n"));
		return WERR_GENERAL_FAILURE;
	}

	/* Recompute checksum */
	if (NT_STATUS_IS_ERR(tdr_push_regf_hdr(push, regf->header))) {
		DEBUG(0, ("Failed to push regf header\n"));
		return WERR_GENERAL_FAILURE;
	}
	regf->header->chksum = regf_hdr_checksum(push->data.data);
	talloc_free(push);

	if (NT_STATUS_IS_ERR(tdr_push_to_fd(regf->fd, regf->iconv_convenience,
					    (tdr_push_fn_t)tdr_push_regf_hdr,
					    regf->header))) {
		DEBUG(0, ("Error writing registry file header\n"));
		return WERR_GENERAL_FAILURE;
	}

	if (lseek(regf->fd, 0x1000, SEEK_SET) == -1) {
		DEBUG(0, ("Error lseeking to 0x1000 in regf file\n"));
		return WERR_GENERAL_FAILURE;
	}

	for (i = 0; regf->hbins[i]; i++) {
		if (NT_STATUS_IS_ERR(tdr_push_to_fd(regf->fd, regf->iconv_convenience,
						    (tdr_push_fn_t)tdr_push_hbin_block,
						    regf->hbins[i]))) {
			DEBUG(0, ("Error writing HBIN block\n"));
			return WERR_GENERAL_FAILURE;
		}
	}

	return WERR_OK;
}

WERROR reg_create_regf_file(TALLOC_CTX *parent_ctx, 
			    struct smb_iconv_convenience *iconv_convenience,
			    const char *location,
			    int minor_version, struct hive_key **key)
{
	struct regf_data *regf;
	struct regf_hdr *regf_hdr;
	struct nk_block nk;
	struct sk_block sk;
	WERROR error;
	DATA_BLOB data;
	struct security_descriptor *sd;
	uint32_t sk_offset;

	regf = (struct regf_data *)talloc_zero(NULL, struct regf_data);

	regf->iconv_convenience = iconv_convenience;

	W_ERROR_HAVE_NO_MEMORY(regf);

	DEBUG(5, ("Attempting to create registry file\n"));

	/* Get the header */
	regf->fd = creat(location, 0644);

	if (regf->fd == -1) {
		DEBUG(0,("Could not create file: %s, %s\n", location,
				 strerror(errno)));
		talloc_free(regf);
		return WERR_GENERAL_FAILURE;
	}

	regf_hdr = talloc_zero(regf, struct regf_hdr);
	W_ERROR_HAVE_NO_MEMORY(regf_hdr);
	regf_hdr->REGF_ID = "regf";
	unix_to_nt_time(&regf_hdr->modtime, time(NULL));
	regf_hdr->version.major = 1;
	regf_hdr->version.minor = minor_version;
	regf_hdr->last_block = 0x1000; /* Block size */
	regf_hdr->description = talloc_strdup(regf_hdr,
					      "Registry created by Samba 4");
	W_ERROR_HAVE_NO_MEMORY(regf_hdr->description);
	regf_hdr->chksum = 0;

	regf->header = regf_hdr;

	/* Create all hbin blocks */
	regf->hbins = talloc_array(regf, struct hbin_block *, 1);
	W_ERROR_HAVE_NO_MEMORY(regf->hbins);
	regf->hbins[0] = NULL;

	nk.header = "nk";
	nk.type = REG_SUB_KEY;
	unix_to_nt_time(&nk.last_change, time(NULL));
	nk.uk1 = 0;
	nk.parent_offset = -1;
	nk.num_subkeys = 0;
	nk.uk2 = 0;
	nk.subkeys_offset = -1;
	nk.unknown_offset = -1;
	nk.num_values = 0;
	nk.values_offset = -1;
	memset(nk.unk3, 0, 5);
	nk.clsname_offset = -1;
	nk.clsname_length = 0;
	nk.sk_offset = 0x80;
	nk.key_name = "SambaRootKey";

	/*
	 * It should be noted that changing the key_name to something shorter
	 * creates a shorter nk block, which makes the position of the sk block
	 * change. All Windows registries I've seen have the sk at 0x80. 
	 * I therefore recommend that our regf files share that offset -- Wilco
	 */

	/* Create a security descriptor. */
	sd = security_descriptor_dacl_create(regf,
					 0,
					 NULL, NULL,
					 SID_NT_AUTHENTICATED_USERS,
					 SEC_ACE_TYPE_ACCESS_ALLOWED,
					 SEC_GENERIC_ALL,
					 SEC_ACE_FLAG_OBJECT_INHERIT,
					 NULL);
	
	/* Push the security descriptor to a blob */
	if (!NDR_ERR_CODE_IS_SUCCESS(ndr_push_struct_blob(&data, regf, NULL, 
				     sd, (ndr_push_flags_fn_t)ndr_push_security_descriptor))) {
		DEBUG(0, ("Unable to push security descriptor\n"));
		return WERR_GENERAL_FAILURE;
	}

	ZERO_STRUCT(sk);
	sk.header = "sk";
	sk.prev_offset = 0x80;
	sk.next_offset = 0x80;
	sk.ref_cnt = 1;
	sk.rec_size = data.length;
	sk.sec_desc = data.data;

	/* Store the new nk key */
	regf->header->data_offset = hbin_store_tdr(regf,
						   (tdr_push_fn_t)tdr_push_nk_block,
						   &nk);
	/* Store the sk block */
	sk_offset = hbin_store_tdr(regf,
				   (tdr_push_fn_t) tdr_push_sk_block,
				   &sk);
	if (sk_offset != 0x80) {
		DEBUG(0, ("Error storing sk block, should be at 0x80, stored at 0x%x\n", nk.sk_offset));
		return WERR_GENERAL_FAILURE;
	}


	*key = (struct hive_key *)regf_get_key(parent_ctx, regf,
					       regf->header->data_offset);

	error = regf_save_hbin(regf);
	if (!W_ERROR_IS_OK(error)) {
		return error;
	}
	
	/* We can drop our own reference now that *key will have created one */
	talloc_free(regf);

	return WERR_OK;
}

WERROR reg_open_regf_file(TALLOC_CTX *parent_ctx, const char *location, 
			  struct smb_iconv_convenience *iconv_convenience, struct hive_key **key)
{
	struct regf_data *regf;
	struct regf_hdr *regf_hdr;
	struct tdr_pull *pull;
	int i;

	regf = (struct regf_data *)talloc_zero(parent_ctx, struct regf_data);

	regf->iconv_convenience = iconv_convenience;

	W_ERROR_HAVE_NO_MEMORY(regf);

	DEBUG(5, ("Attempting to load registry file\n"));

	/* Get the header */
	regf->fd = open(location, O_RDWR);

	if (regf->fd == -1) {
		DEBUG(0,("Could not load file: %s, %s\n", location,
				 strerror(errno)));
		talloc_free(regf);
		return WERR_GENERAL_FAILURE;
	}

	pull = tdr_pull_init(regf, regf->iconv_convenience);

	pull->data.data = (uint8_t*)fd_load(regf->fd, &pull->data.length, 0, regf);

	if (pull->data.data == NULL) {
		DEBUG(0, ("Error reading data\n"));
		talloc_free(regf);
		return WERR_GENERAL_FAILURE;
	}

	regf_hdr = talloc(regf, struct regf_hdr);
	W_ERROR_HAVE_NO_MEMORY(regf_hdr);

	if (NT_STATUS_IS_ERR(tdr_pull_regf_hdr(pull, regf_hdr, regf_hdr))) {
		talloc_free(regf);
		return WERR_GENERAL_FAILURE;
	}

	regf->header = regf_hdr;

	if (strcmp(regf_hdr->REGF_ID, "regf") != 0) {
		DEBUG(0, ("Unrecognized NT registry header id: %s, %s\n",
			regf_hdr->REGF_ID, location));
		talloc_free(regf);
		return WERR_GENERAL_FAILURE;
	}

	/* Validate the header ... */
	if (regf_hdr_checksum(pull->data.data) != regf_hdr->chksum) {
		DEBUG(0, ("Registry file checksum error: %s: %d,%d\n",
			location, regf_hdr->chksum,
			regf_hdr_checksum(pull->data.data)));
		talloc_free(regf);
		return WERR_GENERAL_FAILURE;
	}

	pull->offset = 0x1000;

	i = 0;
	/* Read in all hbin blocks */
	regf->hbins = talloc_array(regf, struct hbin_block *, 1);
	W_ERROR_HAVE_NO_MEMORY(regf->hbins);

	regf->hbins[0] = NULL;

	while (pull->offset < pull->data.length &&
	       pull->offset <= regf->header->last_block) {
		struct hbin_block *hbin = talloc(regf->hbins,
						 struct hbin_block);

		W_ERROR_HAVE_NO_MEMORY(hbin);

		if (NT_STATUS_IS_ERR(tdr_pull_hbin_block(pull, hbin, hbin))) {
			DEBUG(0, ("[%d] Error parsing HBIN block\n", i));
			talloc_free(regf);
			return WERR_FOOBAR;
		}

		if (strcmp(hbin->HBIN_ID, "hbin") != 0) {
			DEBUG(0, ("[%d] Expected 'hbin', got '%s'\n",
				i, hbin->HBIN_ID));
			talloc_free(regf);
			return WERR_FOOBAR;
		}

		regf->hbins[i] = hbin;
		i++;
		regf->hbins = talloc_realloc(regf, regf->hbins,
					     struct hbin_block *, i+2);
		regf->hbins[i] = NULL;
	}

	talloc_free(pull);

	DEBUG(1, ("%d HBIN blocks read\n", i));

	*key = (struct hive_key *)regf_get_key(parent_ctx, regf,
					       regf->header->data_offset);

	/* We can drop our own reference now that *key will have created one */
	talloc_free(regf);

	return WERR_OK;
}

static struct hive_operations reg_backend_regf = {
	.name = "regf",
	.get_key_info = regf_get_info,
	.enum_key = regf_get_subkey_by_index,
	.get_key_by_name = regf_get_subkey_by_name,
	.get_value_by_name = regf_get_value_by_name,
	.enum_value = regf_get_value,
	.get_sec_desc = regf_get_sec_desc,
	.set_sec_desc = regf_set_sec_desc,
	.add_key = regf_add_key,
	.set_value = regf_set_value,
	.del_key = regf_del_key,
	.delete_value = regf_del_value,
};
generated by cgit (git 2.34.1) at 2025-10-16 23:19:43 +0000