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/*
Unix SMB/CIFS implementation.
Main DCOM functionality
Copyright (C) 2004 Jelmer Vernooij <jelmer@samba.org>
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 2 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, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "includes.h"
#include "dlinklist.h"
#include "librpc/gen_ndr/ndr_epmapper.h"
#include "librpc/gen_ndr/ndr_remact.h"
#include "librpc/gen_ndr/ndr_oxidresolver.h"
#include "librpc/gen_ndr/ndr_dcom.h"
#define DCOM_NEGOTIATED_PROTOCOLS { EPM_PROTOCOL_TCP, EPM_PROTOCOL_SMB, EPM_PROTOCOL_NCALRPC }
static NTSTATUS dcerpc_binding_from_STRINGBINDING(TALLOC_CTX *mem_ctx, struct dcerpc_binding *b, struct STRINGBINDING *bd)
{
char *host, *endpoint;
ZERO_STRUCTP(b);
b->transport = dcerpc_transport_by_endpoint_protocol(bd->wTowerId);
if (b->transport == -1) {
DEBUG(1, ("Can't find transport match endpoint protocol %d\n", bd->wTowerId));
return NT_STATUS_NOT_SUPPORTED;
}
host = talloc_strdup(mem_ctx, bd->NetworkAddr);
endpoint = strchr(host, '[');
if (endpoint) {
*endpoint = '\0';
endpoint++;
endpoint[strlen(endpoint)-1] = '\0';
}
b->host = host;
b->endpoint = endpoint;
return NT_STATUS_OK;
}
static NTSTATUS dcom_connect_host(struct dcom_context *ctx, struct dcerpc_pipe **p, const char *server)
{
struct dcerpc_binding bd;
enum dcerpc_transport_t available_transports[] = { NCACN_IP_TCP, NCACN_NP };
int i;
NTSTATUS status;
TALLOC_CTX *mem_ctx = talloc_init("dcom_connect");
/* Allow server name to contain a binding string */
if (NT_STATUS_IS_OK(dcerpc_parse_binding(mem_ctx, server, &bd))) {
status = dcerpc_pipe_connect_b(p, &bd,
DCERPC_IREMOTEACTIVATION_UUID,
DCERPC_IREMOTEACTIVATION_VERSION,
ctx->domain, ctx->user, ctx->password);
talloc_destroy(mem_ctx);
return status;
}
talloc_destroy(mem_ctx);
ZERO_STRUCT(bd);
bd.host = server;
if (server == NULL) {
bd.transport = NCALRPC;
return dcerpc_pipe_connect_b(p, &bd,
DCERPC_IREMOTEACTIVATION_UUID,
DCERPC_IREMOTEACTIVATION_VERSION,
ctx->domain, ctx->user, ctx->password);
}
for (i = 0; i < ARRAY_SIZE(available_transports); i++)
{
bd.transport = available_transports[i];
status = dcerpc_pipe_connect_b(p, &bd,
DCERPC_IREMOTEACTIVATION_UUID,
DCERPC_IREMOTEACTIVATION_VERSION,
ctx->domain, ctx->user, ctx->password);
if (NT_STATUS_IS_OK(status)) {
return status;
}
}
return status;
}
WERROR dcom_init(struct dcom_context **ctx, const char *domain, const char *user, const char *pass)
{
*ctx = talloc_p(NULL, struct dcom_context);
(*ctx)->oxids = NULL;
(*ctx)->domain = talloc_strdup(*ctx, domain);
(*ctx)->user = talloc_strdup(*ctx, user);
(*ctx)->password = talloc_strdup(*ctx, pass);
(*ctx)->dcerpc_flags = 0;
return WERR_OK;
}
static struct dcom_object_exporter *oxid_mapping_by_oxid (struct dcom_context *ctx, HYPER_T oxid)
{
struct dcom_object_exporter *m;
for (m = ctx->oxids;m;m = m->next) {
if (m->oxid == oxid) {
break;
}
}
/* Add oxid mapping if we couldn't find one */
if (!m) {
m = talloc_zero_p(ctx, struct dcom_object_exporter);
m->oxid = oxid;
DLIST_ADD(ctx->oxids, m);
}
return m;
}
WERROR dcom_ping(struct dcom_context *ctx)
{
/* FIXME: If OID's waiting in queue, do a ComplexPing call */
/* FIXME: otherwise, do a SimplePing call */
return WERR_OK;
}
static WERROR dcom_create_object_remote(struct dcom_context *ctx, struct GUID *clsid, const char *server, int num_ifaces, struct GUID *iid, struct dcom_interface_p ***ip, WERROR *results)
{
uint16 protseq[] = DCOM_NEGOTIATED_PROTOCOLS;
struct dcerpc_pipe *p;
struct dcom_object_exporter *m;
NTSTATUS status;
struct RemoteActivation r;
struct DUALSTRINGARRAY dualstring;
int i;
status = dcom_connect_host(ctx, &p, server);
if (NT_STATUS_IS_ERR(status)) {
DEBUG(1, ("Unable to connect to %s - %s\n", server, nt_errstr(status)));
return ntstatus_to_werror(status);
}
ZERO_STRUCT(r.in);
r.in.this.version.MajorVersion = COM_MAJOR_VERSION;
r.in.this.version.MinorVersion = COM_MINOR_VERSION;
r.in.this.cid = GUID_random();
r.in.Clsid = *clsid;
r.in.ClientImpLevel = RPC_C_IMP_LEVEL_IDENTIFY;
r.in.num_protseqs = ARRAY_SIZE(protseq);
r.in.protseq = protseq;
r.in.Interfaces = num_ifaces;
r.in.pIIDs = iid;
r.out.ifaces = talloc_array_p(ctx, struct pMInterfacePointer, num_ifaces);
r.out.pdsaOxidBindings = &dualstring;
status = dcerpc_RemoteActivation(p, ctx, &r);
if(NT_STATUS_IS_ERR(status)) {
DEBUG(1, ("Error while running RemoteActivation %s\n", nt_errstr(status)));
return ntstatus_to_werror(status);
}
if(!W_ERROR_IS_OK(r.out.result)) {
return r.out.result;
}
if(!W_ERROR_IS_OK(r.out.hr)) {
return r.out.hr;
}
*ip = talloc_array_p(ctx, struct dcom_interface_p *, num_ifaces);
for (i = 0; i < num_ifaces; i++) {
results[i] = r.out.results[i];
(*ip)[i] = NULL;
if (W_ERROR_IS_OK(results[i])) {
status = dcom_ifacep_from_OBJREF(ctx, &(*ip)[i], &r.out.ifaces[i].p->obj);
if (NT_STATUS_IS_OK(status)) {
(*ip)[i]->private_references = 1;
} else {
results[i] = ntstatus_to_werror(status);
}
}
}
/* Add the OXID data for the returned oxid */
m = oxid_mapping_by_oxid(ctx, r.out.pOxid);
m->bindings = *r.out.pdsaOxidBindings;
return WERR_OK;
}
WERROR dcom_create_object(struct dcom_context *ctx, struct GUID *clsid, const char *server, int num_ifaces, struct GUID *iid, struct dcom_interface_p ***ip, WERROR *results)
{
struct dcom_interface_p *factory, *iunk = NULL;
struct QueryInterface qr;
struct Release rr;
struct CreateInstance cr;
WERROR error;
int i;
NTSTATUS status;
if (server != NULL) {
return dcom_create_object_remote(ctx, clsid, server, num_ifaces, iid, ip, results);
}
/* Obtain class object */
error = dcom_get_class_object(ctx, clsid, server, iid, &factory);
if (!W_ERROR_IS_OK(error)) {
DEBUG(3, ("Unable to obtain class object for %s\n", GUID_string(NULL, clsid)));
return error;
}
dcom_OBJREF_from_ifacep(ctx, &cr.in.pUnknown->obj, factory);
GUID_from_string(DCERPC_ICLASSFACTORY_UUID, cr.in.iid);
/* Run IClassFactory::CreateInstance() */
status = dcom_IClassFactory_CreateInstance(factory, ctx, &cr);
if (NT_STATUS_IS_ERR(status)) {
DEBUG(3, ("Error while calling IClassFactory::CreateInstance : %s\n", nt_errstr(status)));
return ntstatus_to_werror(status);
}
/* Release class object */
status = dcom_IUnknown_Release(factory, ctx, &rr);
if (NT_STATUS_IS_ERR(status)) {
DEBUG(3, ("Error freeing class factory: %s\n", nt_errstr(status)));
return ntstatus_to_werror(status);
}
/* Do one or more QueryInterface calls */
for (i = 0; i < num_ifaces; i++) {
qr.in.iid = &iid[i];
status = dcom_IUnknown_QueryInterface(iunk, ctx, &qr);
if (NT_STATUS_IS_ERR(status)) {
DEBUG(4, ("Error obtaining interface %s : %s\n", GUID_string(NULL, &iid[i]), nt_errstr(status)));
return ntstatus_to_werror(status);
}
results[i] = qr.out.result;
}
return WERR_OK;
}
WERROR dcom_get_class_object_remote(struct dcom_context *ctx, struct GUID *clsid, const char *server, struct GUID *iid, struct dcom_interface_p **ip)
{
struct dcom_object_exporter *m;
struct RemoteActivation r;
struct dcerpc_pipe *p;
struct DUALSTRINGARRAY dualstring;
NTSTATUS status;
struct pMInterfacePointer pm;
uint16 protseq[] = DCOM_NEGOTIATED_PROTOCOLS;
status = dcom_connect_host(ctx, &p, server);
if (NT_STATUS_IS_ERR(status)) {
DEBUG(1, ("Unable to connect to %s - %s\n", server, nt_errstr(status)));
return ntstatus_to_werror(status);
}
ZERO_STRUCT(r.in);
r.in.this.version.MajorVersion = COM_MAJOR_VERSION;
r.in.this.version.MinorVersion = COM_MINOR_VERSION;
r.in.this.cid = GUID_random();
r.in.Clsid = *clsid;
r.in.ClientImpLevel = RPC_C_IMP_LEVEL_IDENTIFY;
r.in.num_protseqs = ARRAY_SIZE(protseq);
r.in.protseq = protseq;
r.in.Interfaces = 1;
r.in.pIIDs = iid;
r.in.Mode = MODE_GET_CLASS_OBJECT;
r.out.ifaces = ±
r.out.pdsaOxidBindings = &dualstring;
status = dcerpc_RemoteActivation(p, ctx, &r);
if(NT_STATUS_IS_ERR(status)) {
DEBUG(1, ("Error while running RemoteActivation - %s\n", nt_errstr(status)));
return ntstatus_to_werror(status);
}
if(!W_ERROR_IS_OK(r.out.result)) { return r.out.result; }
if(!W_ERROR_IS_OK(r.out.hr)) { return r.out.hr; }
if(!W_ERROR_IS_OK(r.out.results[0])) { return r.out.results[0]; }
/* Set up the interface data */
dcom_ifacep_from_OBJREF(ctx, ip, &pm.p->obj);
(*ip)->private_references = 1;
/* Add the OXID data for the returned oxid */
m = oxid_mapping_by_oxid(ctx, r.out.pOxid);
m->bindings = *r.out.pdsaOxidBindings;
return WERR_OK;
}
WERROR dcom_get_class_object(struct dcom_context *ctx, struct GUID *clsid, const char *server, struct GUID *iid, struct dcom_interface_p **ip)
{
const struct dcom_class *c;
struct QueryInterface qi;
NTSTATUS status;
if (server != NULL) {
return dcom_get_class_object_remote(ctx, clsid, server, iid, ip);
}
c = dcom_class_by_clsid(clsid);
if (!c) {
/* FIXME: Better error code.. */
return WERR_DEST_NOT_FOUND;
}
qi.in.iid = iid;
status = dcom_IUnknown_QueryInterface(c->class_object, ctx, &qi );
if (NT_STATUS_IS_ERR(status)) {
return ntstatus_to_werror(status);
}
if (!W_ERROR_IS_OK(qi.out.result)) { return qi.out.result; }
dcom_ifacep_from_OBJREF(ctx, ip, &qi.out.data->obj);
return WERR_OK;
}
NTSTATUS dcom_get_pipe (struct dcom_interface_p *iface, struct dcerpc_pipe **p)
{
struct dcerpc_binding binding;
struct GUID iid;
HYPER_T oxid;
NTSTATUS status;
int i;
*p = NULL;
oxid = iface->ox->oxid;
iid = iface->interface->iid;
#warning "dcerpc_alter needed"
#if 0
if (iface->ox->pipe) {
if (!GUID_equal(&iface->ox->pipe->syntax.uuid, &iid)) {
iface->ox->pipe->syntax.uuid = iid;
status = dcerpc_alter(iface->ox->pipe, iface->ctx);
if (NT_STATUS_IS_ERR(status)) {
return status;
}
}
*p = iface->ox->pipe;
return NT_STATUS_OK;
}
#endif
i = 0;
do {
status = dcerpc_binding_from_STRINGBINDING(iface->ctx, &binding, iface->ox->bindings.stringbindings[i]);
if (NT_STATUS_IS_ERR(status)) {
DEBUG(1, ("Error parsing string binding"));
} else {
binding.flags = iface->ctx->dcerpc_flags;
status = dcerpc_pipe_connect_b(&iface->ox->pipe, &binding, GUID_string(iface->ctx, &iid) , 0.0, iface->ctx->domain, iface->ctx->user, iface->ctx->password);
}
i++;
} while (NT_STATUS_IS_ERR(status) && iface->ox->bindings.stringbindings[i]);
if (NT_STATUS_IS_ERR(status)) {
DEBUG(0, ("Unable to connect to remote host - %s\n", nt_errstr(status)));
return status;
}
DEBUG(2, ("Successfully connected to OXID %llx\n", oxid));
*p = iface->ox->pipe;
return NT_STATUS_OK;
}
struct dcom_object *dcom_object_by_oid(struct dcom_object_exporter *ox, HYPER_T oid)
{
struct dcom_object *o;
for (o = ox->objects; o; o = o->next) {
if (o->oid == oid) {
break;
}
}
if (o == NULL) {
o = talloc_zero_p(ox, struct dcom_object);
o->oid = oid;
DLIST_ADD(ox->objects, o);
}
return o;
}
NTSTATUS dcom_OBJREF_from_ifacep(struct dcom_context *ctx, struct OBJREF *o, struct dcom_interface_p *_p)
{
return NT_STATUS_NOT_IMPLEMENTED;
}
NTSTATUS dcom_ifacep_from_OBJREF(struct dcom_context *ctx, struct dcom_interface_p **_p, struct OBJREF *o)
{
struct dcom_interface_p *p = talloc_p(ctx, struct dcom_interface_p);
p->ctx = ctx;
p->interface = dcom_interface_by_iid(&o->iid);
if (!p->interface) {
DEBUG(0, ("Unable to find interface with IID %s\n", GUID_string(ctx, &o->iid)));
return NT_STATUS_NOT_SUPPORTED;
}
p->private_references = 0;
p->objref_flags = o->flags;
switch(p->objref_flags) {
case OBJREF_NULL:
p->object = NULL;
p->ox = NULL;
p->vtable = dcom_proxy_vtable_by_iid(&p->interface->iid);
ZERO_STRUCT(p->ipid);
*_p = p;
return NT_STATUS_OK;
case OBJREF_STANDARD:
p->ox = oxid_mapping_by_oxid(ctx, o->u_objref.u_standard.std.oxid);
p->ipid = o->u_objref.u_standard.std.ipid;
p->object = dcom_object_by_oid(p->ox, o->u_objref.u_standard.std.oid);
p->ox->resolver_address = o->u_objref.u_standard.saResAddr;
p->vtable = dcom_proxy_vtable_by_iid(&p->interface->iid);
*_p = p;
return NT_STATUS_OK;
case OBJREF_HANDLER:
p->ox = oxid_mapping_by_oxid(ctx, o->u_objref.u_handler.std.oxid );
p->ipid = o->u_objref.u_handler.std.ipid;
p->object = dcom_object_by_oid(p->ox, o->u_objref.u_standard.std.oid);
p->ox->resolver_address = o->u_objref.u_handler.saResAddr;
/*FIXME p->vtable = dcom_vtable_by_clsid(&o->u_objref.u_handler.clsid);*/
/* FIXME: Do the custom unmarshaling call */
*_p = p;
return NT_STATUS_OK;
case OBJREF_CUSTOM:
{
p->vtable = NULL;
/* FIXME: Do the actual custom unmarshaling call */
p->ox = NULL;
p->object = NULL;
ZERO_STRUCT(p->ipid);
*_p = p;
return NT_STATUS_NOT_SUPPORTED;
}
}
return NT_STATUS_NOT_SUPPORTED;
#if 0
struct dcom_oxid_mapping *m;
/* Add OXID mapping if none present yet */
if (!m) {
struct dcerpc_pipe *po;
struct ResolveOxid r;
uint16 protseq[] = DCOM_NEGOTIATED_PROTOCOLS;
DEBUG(3, ("No binding data present yet, resolving OXID %llu\n", p->ox->oxid));
m = talloc_zero_p(p->ctx, struct dcom_oxid_mapping);
m->oxid = oxid;
i = 0;
do {
status = dcerpc_binding_from_STRINGBINDING(p->ctx, &binding, p->client.objref->u_objref.u_standard.saResAddr.stringbindings[i]);
if (NT_STATUS_IS_OK(status)) {
binding.flags = iface->ctx->dcerpc_flags;
status = dcerpc_pipe_connect_b(&po, &binding, DCERPC_IOXIDRESOLVER_UUID, DCERPC_IOXIDRESOLVER_VERSION, iface->ctx->domain, iface->ctx->user, iface->ctx->password);
} else {
DEBUG(1, ("Error parsing string binding - %s", nt_errstr(status)));
}
i++;
} while (!NT_STATUS_IS_OK(status) && iface->client.objref->u_objref.u_standard.saResAddr.stringbindings[i]);
if (NT_STATUS_IS_ERR(status)) {
DEBUG(1, ("Error while connecting to OXID Resolver : %s\n", nt_errstr(status)));
return status;
}
r.in.pOxid = oxid;
r.in.cRequestedProtseqs = ARRAY_SIZE(protseq);
r.in.arRequestedProtseqs = protseq;
r.out.ppdsaOxidBindings = &m->bindings;
status = dcerpc_ResolveOxid(po, iface->ctx, &r);
if (NT_STATUS_IS_ERR(status)) {
DEBUG(1, ("Error while resolving OXID: %s\n", nt_errstr(status)));
return status;
}
dcerpc_pipe_close(po);
DLIST_ADD(iface->ctx->oxids, m);
}
#endif
return NT_STATUS_NOT_SUPPORTED;
}
HYPER_T dcom_get_current_oxid(void)
{
return getpid();
}
struct dcom_interface_p *dcom_new_local_ifacep(struct dcom_context *ctx, const struct dcom_interface *iface, void *vtable, struct dcom_object *object)
{
struct dcom_interface_p *ip = talloc_p(ctx, struct dcom_interface_p);
ip->ctx = ctx;
ip->interface = iface;
ip->vtable = vtable;
ip->ipid = GUID_random();
ip->object = object;
ip->objref_flags = 0;
ip->orpc_flags = 0;
ip->ox = NULL;
ip->private_references = 1;
return ip;
}
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