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/*
Unix SMB/Netbios implementation.
Version 3.0
program to send control messages to Samba processes
Copyright (C) Andrew Tridgell 1994-1998
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.
*/
#define NO_SYSLOG
#include "includes.h"
static struct {
char *name;
int value;
} msg_types[] = {
{"debug", MSG_DEBUG},
{"force-election", MSG_FORCE_ELECTION},
{"ping", MSG_PING},
{"profile", MSG_PROFILE},
{"debuglevel", MSG_REQ_DEBUGLEVEL},
{NULL, -1}
};
static void usage(BOOL doexit)
{
int i;
if (doexit) {
printf("Usage: smbcontrol -i\n");
printf(" smbcontrol <destination> <message-type> <parameters>\n\n");
} else {
printf("<destination> <message-type> <parameters>\n\n");
}
printf("\t<destination> is one of \"nmbd\", \"smbd\" or a process ID\n");
printf("\t<message-type> is one of: ");
for (i=0; msg_types[i].name; i++)
printf("%s%s", i?", ":"",msg_types[i].name);
printf("\n");
if (doexit) exit(1);
}
static int pong_count;
static BOOL got_level;
static BOOL pong_registered = False;
static BOOL debuglevel_registered = False;
/****************************************************************************
a useful function for testing the message system
****************************************************************************/
void pong_function(int msg_type, pid_t src, void *buf, size_t len)
{
pong_count++;
printf("PONG\n");
}
/****************************************************************************
Prints out the current Debug level returned by MSG_DEBUGLEVEL
****************************************************************************/
void debuglevel_function(int msg_type, pid_t src, void *buf, size_t len)
{
int level;
memcpy(&level, buf, sizeof(int));
printf("Current debug level is %d\n",level);
got_level = True;
}
/****************************************************************************
send a message to a named destination
****************************************************************************/
static BOOL send_message(char *dest, int msg_type, void *buf, int len)
{
pid_t pid;
/* "smbd" is the only broadcast operation */
if (strequal(dest,"smbd")) {
return message_send_all(msg_type, buf, len);
} else if (strequal(dest,"nmbd")) {
pid = pidfile_pid(dest);
if (pid == 0) {
fprintf(stderr,"Can't find pid for nmbd\n");
return False;
}
} else {
pid = atoi(dest);
if (pid == 0) {
fprintf(stderr,"Not a valid pid\n");
return False;
}
}
return message_send_pid(pid, msg_type, buf, len);
}
/****************************************************************************
evaluate a message type string
****************************************************************************/
static int parse_type(char *mtype)
{
int i;
for (i=0;msg_types[i].name;i++) {
if (strequal(mtype, msg_types[i].name)) return msg_types[i].value;
}
return -1;
}
/****************************************************************************
do command
****************************************************************************/
static BOOL do_command(char *dest, char *msg_name, char *params)
{
int i, n, v;
int mtype;
mtype = parse_type(msg_name);
if (mtype == -1) {
fprintf(stderr,"Couldn't resolve message type: %s\n", msg_name);
return(False);
}
switch (mtype) {
case MSG_DEBUG:
if (!params) {
fprintf(stderr,"MSG_DEBUG needs a parameter\n");
return(False);
}
v = atoi(params);
send_message(dest, MSG_DEBUG, &v, sizeof(int));
break;
case MSG_PROFILE:
if (!params) {
fprintf(stderr,"MSG_PROFILE needs a parameter\n");
return(False);
}
if (strequal(params, "on")) {
v = 2;
} else if (strequal(params, "off")) {
v = 0;
} else if (strequal(params, "count")) {
v = 1;
} else {
fprintf(stderr,
"MSG_PROFILE parameter must be on, off, or count\n");
return(False);
}
send_message(dest, MSG_PROFILE, &v, sizeof(int));
break;
case MSG_FORCE_ELECTION:
if (!strequal(dest, "nmbd")) {
fprintf(stderr,"force-election can only be sent to nmbd\n");
return(False);
}
send_message(dest, MSG_FORCE_ELECTION, NULL, 0);
break;
case MSG_REQ_DEBUGLEVEL:
if (!debuglevel_registered) {
message_register(MSG_DEBUGLEVEL, debuglevel_function);
debuglevel_registered = True;
}
if (strequal(dest, "nmbd") || strequal(dest, "smbd")) {
fprintf(stderr,"debuglevel can only be sent to a PID\n");
return(False);
}
got_level = False;
send_message(dest, MSG_REQ_DEBUGLEVEL, NULL, 0);
while (!got_level) message_dispatch();
break;
case MSG_PING:
if (!pong_registered) {
message_register(MSG_PONG, pong_function);
pong_registered = True;
}
if (!params) {
fprintf(stderr,"MSG_PING needs a parameter\n");
return(False);
}
n = atoi(params);
pong_count = 0;
for (i=0;i<n;i++) {
send_message(dest, MSG_PING, NULL, 0);
}
while (pong_count < n) message_dispatch();
break;
}
return (True);
}
int main(int argc, char *argv[])
{
int opt;
char temp[255];
extern int optind;
pstring servicesf = CONFIGFILE;
BOOL interactive = False;
TimeInit();
setup_logging(argv[0],True);
charset_initialise();
lp_load(servicesf,False,False,False);
message_init();
if (argc < 2) usage(True);
while ((opt = getopt(argc, argv,"i")) != EOF) {
switch (opt) {
case 'i':
interactive = True;
break;
default:
printf("Unknown option %c (%d)\n", (char)opt, opt);
usage(True);
}
}
argc -= optind;
argv = &argv[optind];
if (!interactive) {
if (argc < 2) usage(True);
return (do_command(argv[0],argv[1],argc > 2 ? argv[2] : 0));
}
while (True) {
char *myargv[3];
int myargc;
printf("smbcontrol> ");
if (!fgets(temp, sizeof(temp)-1, stdin)) break;
myargc = 0;
while ((myargc < 3) &&
(myargv[myargc] = strtok(myargc?NULL:temp," \t\n"))) {
myargc++;
}
if (!myargc) break;
if (myargc < 2)
usage(False);
else if (!do_command(myargv[0],myargv[1],myargc > 2 ? myargv[2] : 0))
usage(False);
}
return(0);
}
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