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/*
* Samba Unix/Linux notifyd client code
* Copyright (C) 2015 Volker Lendecke <vl@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 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 "utils/net.h"
#include "lib/util/tevent_unix.h"
#include "lib/util/server_id_db.h"
#include "messages.h"
#include "source3/smbd/notifyd/notifyd.h"
static void net_notify_got_event(struct messaging_context *msg,
void *private_data,
uint32_t msg_type,
struct server_id server_id,
DATA_BLOB *data)
{
struct notify_event_msg *event_msg;
if (data->length < offsetof(struct notify_event_msg, path) + 1) {
d_fprintf(stderr, "message too short\n");
return;
}
if (data->data[data->length-1] != 0) {
d_fprintf(stderr, "path not 0-terminated\n");
return;
}
event_msg = (struct notify_event_msg *)data->data;
d_printf("%u %s\n", (unsigned)event_msg->action,
event_msg->path);
}
static int net_notify_listen(struct net_context *c, int argc,
const char **argv)
{
struct messaging_context *msg_ctx = c->msg_ctx;
struct tevent_context *ev = messaging_tevent_context(msg_ctx);
struct server_id_db *names_db = messaging_names_db(msg_ctx);
struct server_id notifyd;
struct server_id_buf idbuf;
struct notify_rec_change_msg msg;
struct iovec iov[2];
NTSTATUS status;
bool ok;
if (argc != 3) {
d_printf("Usage: net notify listen <path> <filter> "
"<subdir-filter>\n");
return -1;
}
ok = server_id_db_lookup_one(names_db, "notify-daemon", ¬ifyd);
if (!ok) {
fprintf(stderr, "no notify daemon found\n");
return -1;
}
printf("notify daemon: %s\n", server_id_str_buf(notifyd, &idbuf));
msg = (struct notify_rec_change_msg) {
.instance.filter = atoi(argv[1]),
.instance.subdir_filter = atoi(argv[2])
};
iov[0] = (struct iovec) {
.iov_base = &msg,
.iov_len = offsetof(struct notify_rec_change_msg, path)
};
iov[1] = (struct iovec) {
.iov_base = discard_const_p(char, argv[0]),
.iov_len = strlen(argv[0])+1
};
status = messaging_register(c->msg_ctx, NULL, MSG_PVFS_NOTIFY,
net_notify_got_event);
if (!NT_STATUS_IS_OK(status)) {
d_fprintf(stderr, "messaging_register failed: %s\n",
nt_errstr(status));
return -1;
}
status = messaging_send_iov(
c->msg_ctx, notifyd, MSG_SMB_NOTIFY_REC_CHANGE,
iov, ARRAY_SIZE(iov), NULL, 0);
if (!NT_STATUS_IS_OK(status)) {
d_fprintf(stderr, "Sending rec_change to %s returned %s\n",
server_id_str_buf(notifyd, &idbuf),
nt_errstr(status));
return -1;
}
while (true) {
int ret;
ret = tevent_loop_once(ev);
if (ret != 0) {
d_fprintf(stderr, "tevent_loop_once failed: %s\n",
strerror(errno));
break;
}
}
return 0;
}
static int net_notify_trigger(struct net_context *c, int argc,
const char **argv)
{
struct messaging_context *msg_ctx = c->msg_ctx;
struct server_id_db *names_db = messaging_names_db(msg_ctx);
struct server_id notifyd;
struct server_id_buf idbuf;
struct notify_trigger_msg msg;
struct iovec iov[2];
NTSTATUS status;
bool ok;
if (argc != 3) {
d_printf("Usage: net notify trigger <path> <action> "
"<filter>\n");
return -1;
}
ok = server_id_db_lookup_one(names_db, "notify-daemon", ¬ifyd);
if (!ok) {
fprintf(stderr, "no notify daemon found\n");
return -1;
}
printf("notify daemon: %s\n", server_id_str_buf(notifyd, &idbuf));
msg = (struct notify_trigger_msg) {
.action = atoi(argv[1]), .filter = atoi(argv[2])
};
iov[0] = (struct iovec) {
.iov_base = &msg,
.iov_len = offsetof(struct notify_trigger_msg, path)
};
iov[1] = (struct iovec) {
.iov_base = discard_const_p(char, argv[0]),
.iov_len = strlen(argv[0])+1
};
status = messaging_send_iov(
c->msg_ctx, notifyd, MSG_SMB_NOTIFY_TRIGGER,
iov, ARRAY_SIZE(iov), NULL, 0);
if (!NT_STATUS_IS_OK(status)) {
d_printf("Sending rec_change to %s returned %s\n",
server_id_str_buf(notifyd, &idbuf),
nt_errstr(status));
return -1;
}
return 0;
}
int net_notify(struct net_context *c, int argc, const char **argv)
{
struct functable func[] = {
{ "listen",
net_notify_listen,
NET_TRANSPORT_LOCAL,
N_("Register for a path and listen for changes"),
N_("net notify listen <path>")
},
{ "trigger",
net_notify_trigger,
NET_TRANSPORT_LOCAL,
N_("Simulate a trigger action"),
N_("net notify trigger <path> <action> <filter>")
},
{NULL, NULL, 0, NULL, NULL}
};
if (c->msg_ctx == NULL) {
d_fprintf(stderr, "No connection to messaging, need to run "
"as root\n");
return -1;
}
return net_run_function(c, argc, argv, "net notify", func);
}
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