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/*
Unix SMB/CIFS implementation.
Copyright © Jelmer Vernooij <jelmer@samba.org> 2008
Based on the equivalent for EJS:
Copyright © Andrew Tridgell <tridge@samba.org> 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 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 <Python.h>
#include "lib/messaging/irpc.h"
/*
messaging clients need server IDs as well ...
*/
#define EJS_ID_BASE 0x30000000
/*
state of a irpc 'connection'
*/
struct ejs_irpc_connection {
const char *server_name;
struct server_id *dest_ids;
struct messaging_context *msg_ctx;
};
/*
setup a context for talking to a irpc server
example:
status = irpc.connect("smb_server");
*/
PyObject *py_irpc_connect(PyObject *args, PyObjet *kwargs)
{
NTSTATUS status;
int i;
struct event_context *ev;
struct ejs_irpc_connection *p;
struct MprVar *this = mprGetProperty(ejsGetLocalObject(eid), "this", 0);
/* validate arguments */
if (argc != 1) {
ejsSetErrorMsg(eid, "rpc_connect invalid arguments");
return -1;
}
p = talloc(this, struct ejs_irpc_connection);
if (p == NULL) {
return -1;
}
p->server_name = argv[0];
ev = mprEventCtx();
/* create a messaging context, looping as we have no way to
allocate temporary server ids automatically */
for (i=0;i<10000;i++) {
p->msg_ctx = messaging_init(p,
lp_messaging_path(p, mprLpCtx()),
cluster_id(EJS_ID_BASE, i),
lp_iconv_convenience(mprLpCtx()),
ev);
if (p->msg_ctx) break;
}
if (p->msg_ctx == NULL) {
ejsSetErrorMsg(eid, "irpc_connect unable to create a messaging context");
talloc_free(p);
return -1;
}
p->dest_ids = irpc_servers_byname(p->msg_ctx, p, p->server_name);
if (p->dest_ids == NULL || p->dest_ids[0].id == 0) {
talloc_free(p);
status = NT_STATUS_OBJECT_NAME_NOT_FOUND;
} else {
mprSetPtrChild(this, "irpc", p);
status = NT_STATUS_OK;
}
mpr_Return(eid, mprNTSTATUS(status));
return 0;
}
/*
make an irpc call - called via the same interface as rpc
*/
static int ejs_irpc_call(int eid, struct MprVar *io,
const struct ndr_interface_table *iface, int callnum,
ejs_pull_function_t ejs_pull, ejs_push_function_t ejs_push)
{
NTSTATUS status;
void *ptr;
struct ejs_rpc *ejs;
const struct ndr_interface_call *call;
struct ejs_irpc_connection *p;
struct irpc_request **reqs;
int i, count;
struct MprVar *results;
p = (struct ejs_irpc_connection *)mprGetThisPtr(eid, "irpc");
ejs = talloc(mprMemCtx(), struct ejs_rpc);
if (ejs == NULL) {
status = NT_STATUS_NO_MEMORY;
goto done;
}
call = &iface->calls[callnum];
ejs->eid = eid;
ejs->callname = call->name;
/* allocate the C structure */
ptr = talloc_zero_size(ejs, call->struct_size);
if (ptr == NULL) {
status = NT_STATUS_NO_MEMORY;
goto done;
}
/* convert the mpr object into a C structure */
status = ejs_pull(ejs, io, ptr);
if (!NT_STATUS_IS_OK(status)) {
goto done;
}
for (count=0;p->dest_ids[count].id;count++) /* noop */ ;
/* we need to make a call per server */
reqs = talloc_array(ejs, struct irpc_request *, count);
if (reqs == NULL) {
status = NT_STATUS_NO_MEMORY;
goto done;
}
/* make the actual calls */
for (i=0;i<count;i++) {
reqs[i] = irpc_call_send(p->msg_ctx, p->dest_ids[i],
iface, callnum, ptr, ptr);
if (reqs[i] == NULL) {
status = NT_STATUS_NO_MEMORY;
goto done;
}
talloc_steal(reqs, reqs[i]);
}
mprSetVar(io, "results", mprObject("results"));
results = mprGetProperty(io, "results", NULL);
/* and receive the results, placing them in io.results[i] */
for (i=0;i<count;i++) {
struct MprVar *output;
status = irpc_call_recv(reqs[i]);
if (!NT_STATUS_IS_OK(status)) {
goto done;
}
status = ejs_push(ejs, io, ptr);
if (!NT_STATUS_IS_OK(status)) {
goto done;
}
/* add to the results array */
output = mprGetProperty(io, "output", NULL);
if (output) {
char idx[16];
mprItoa(i, idx, sizeof(idx));
mprSetProperty(results, idx, output);
mprDeleteProperty(io, "output");
}
}
mprSetVar(results, "length", mprCreateIntegerVar(i));
done:
talloc_free(ejs);
mpr_Return(eid, mprNTSTATUS(status));
if (NT_STATUS_EQUAL(status, NT_STATUS_INTERNAL_ERROR)) {
return -1;
}
return 0;
}
static void initirpc(void)
{
PyObject *mod;
mod = Py_InitModule("irpc", irpc_methods);
}
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