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/*
Unix SMB/CIFS implementation.
provide interfaces to rpc calls from ejs scripts
Copyright (C) Andrew Tridgell 2005
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 "lib/ejs/ejs.h"
#include "librpc/gen_ndr/ndr_echo.h"
#include "lib/cmdline/popt_common.h"
#include "scripting/ejs/ejsrpc.h"
#include "dlinklist.h"
/*
connect to an rpc server
example:
var conn = new Object();
status = rpc_connect(conn, "ncacn_ip_tcp:localhost", "rpcecho");
*/
static int ejs_rpc_connect(MprVarHandle eid, int argc, struct MprVar **argv)
{
const char *binding, *pipe_name;
const struct dcerpc_interface_table *iface;
NTSTATUS status;
struct dcerpc_pipe *p;
struct MprVar *conn;
struct cli_credentials *creds = cmdline_credentials;
struct event_context *ev;
/* validate arguments */
if (argc != 3 ||
argv[0]->type != MPR_TYPE_OBJECT ||
argv[1]->type != MPR_TYPE_STRING ||
argv[2]->type != MPR_TYPE_STRING) {
ejsSetErrorMsg(eid, "rpc_connect invalid arguments");
return -1;
}
conn = argv[0];
binding = mprToString(argv[1]);
pipe_name = mprToString(argv[2]);
iface = idl_iface_by_name(pipe_name);
if (iface == NULL) {
status = NT_STATUS_OBJECT_NAME_INVALID;
goto done;
}
if (creds == NULL) {
creds = cli_credentials_init(mprMemCtx());
cli_credentials_guess(creds);
cli_credentials_set_username(creds, "", CRED_GUESSED);
cli_credentials_set_password(creds, "", CRED_GUESSED);
}
ev = talloc_find_parent_bytype(mprMemCtx(), struct event_context);
status = dcerpc_pipe_connect(mprMemCtx(), &p, binding,
iface->uuid, iface->if_version,
creds, ev);
if (!NT_STATUS_IS_OK(status)) goto done;
/* callers don't allocate ref vars in the ejs interface */
p->conn->flags |= DCERPC_NDR_REF_ALLOC;
mprSetPtr(conn, "pipe", p);
mprSetPtr(conn, "iface", iface);
done:
ejsSetReturnValue(eid, mprNTSTATUS(status));
return 0;
}
/*
make an rpc call
example:
status = rpc_call(conn, "echo_AddOne", io);
*/
int ejs_rpc_call(int eid, int argc, struct MprVar **argv,
const char *callname,
ejs_pull_function_t ejs_pull, ejs_push_function_t ejs_push)
{
struct MprVar *conn, *io;
const struct dcerpc_interface_table *iface;
struct dcerpc_pipe *p;
const struct dcerpc_interface_call *call;
NTSTATUS status;
void *ptr;
struct rpc_request *req;
int callnum;
if (argc != 2 ||
argv[0]->type != MPR_TYPE_OBJECT ||
argv[1]->type != MPR_TYPE_OBJECT) {
ejsSetErrorMsg(eid, "rpc_call invalid arguments");
return -1;
}
conn = argv[0];
io = argv[1];
/* get the pipe info */
p = mprGetPtr(conn, "pipe");
iface = mprGetPtr(conn, "iface");
if (p == NULL || iface == NULL) {
ejsSetErrorMsg(eid, "rpc_call invalid pipe");
return -1;
}
/* find the call by name */
call = dcerpc_iface_find_call(iface, callname);
if (call == NULL) {
status = NT_STATUS_OBJECT_NAME_INVALID;
goto done;
}
callnum = call - iface->calls;
/* allocate the C structure */
ptr = talloc_zero_size(mprMemCtx(), call->struct_size);
if (ptr == NULL) {
status = NT_STATUS_NO_MEMORY;
goto done;
}
/* convert the mpr object into a C structure */
status = ejs_pull_rpc(eid, callname, io, ptr, ejs_pull);
if (!NT_STATUS_IS_OK(status)) {
goto done;
}
/* if requested, print the structure */
if (p->conn->flags & DCERPC_DEBUG_PRINT_IN) {
ndr_print_function_debug(call->ndr_print, call->name, NDR_IN, ptr);
}
/* make the actual call */
req = dcerpc_ndr_request_send(p, NULL, iface, callnum, ptr, ptr);
if (req == NULL) {
status = NT_STATUS_NO_MEMORY;
talloc_free(ptr);
goto done;
}
status = dcerpc_ndr_request_recv(req);
/* print the 'out' structure, if needed */
if (p->conn->flags & DCERPC_DEBUG_PRINT_OUT) {
ndr_print_function_debug(call->ndr_print, call->name, NDR_OUT, ptr);
}
status = ejs_push_rpc(eid, callname, io, ptr, ejs_push);
talloc_free(ptr);
done:
ejsSetReturnValue(eid, mprNTSTATUS(status));
if (NT_STATUS_EQUAL(status, NT_STATUS_INTERNAL_ERROR)) {
return -1;
}
return 0;
}
/* a list of registered ejs rpc modules */
static struct ejs_register {
struct ejs_register *next, *prev;
const char *name;
ejs_setup_t setup;
ejs_constants_t constants;
} *ejs_registered;
/*
register a generated ejs module
*/
NTSTATUS smbcalls_register_ejs(const char *name,
ejs_setup_t setup,
ejs_constants_t constants)
{
struct ejs_register *r;
void *ctx = ejs_registered;
if (ctx == NULL) {
ctx = talloc_autofree_context();
}
r = talloc(ctx, struct ejs_register);
NT_STATUS_HAVE_NO_MEMORY(r);
r->name = name;
r->setup = setup;
r->constants = constants;
DLIST_ADD(ejs_registered, r);
return NT_STATUS_OK;
}
/*
setup C functions that be called from ejs
*/
void smb_setup_ejs_rpc(void)
{
struct ejs_register *r;
ejsDefineCFunction(-1, "rpc_connect", ejs_rpc_connect, NULL, MPR_VAR_SCRIPT_HANDLE);
for (r=ejs_registered;r;r=r->next) {
r->setup();
}
}
/*
setup constants for rpc calls
*/
void smb_setup_ejs_rpc_constants(int eid)
{
struct ejs_register *r;
struct MprVar v;
for (r=ejs_registered;r;r=r->next) {
r->constants(eid);
}
v = mprCreatePtrVar(NULL, "NULL");
mprSetProperty(ejsGetGlobalObject(eid), "NULL", &v);
}
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