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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
Copyright (C) 2001 by Martin Pool
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"
static struct {
char *name;
int value;
} msg_types[] = {
{"debug", MSG_DEBUG},
{"force-election", MSG_FORCE_ELECTION},
{"ping", MSG_PING},
{"profile", MSG_PROFILE},
{"profilelevel", MSG_REQ_PROFILELEVEL},
{"debuglevel", MSG_REQ_DEBUGLEVEL},
{"printer-notify", MSG_PRINTER_NOTIFY},
{"close-share", MSG_SMB_FORCE_TDIS},
{"samsync", MSG_SMB_SAM_SYNC},
{"samrepl", MSG_SMB_SAM_REPL},
{"pool-usage", MSG_REQ_POOL_USAGE },
{NULL, -1}
};
time_t timeout_start;
#define MAX_WAIT 10
static void usage(BOOL doexit)
{
int i;
if (doexit) {
printf("Usage: smbcontrol -i -s configfile\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;
static BOOL profilelevel_registered = False;
static BOOL pool_usage_registered = False;
/**
* Wait for replies for up to @p *max_secs seconds, or until @p
* max_replies are received. max_replies may be NULL in which case it
* is ignored.
*
* @note This is a pretty lame timeout; all it means is that after
* max_secs we won't look for any more messages.
**/
static void wait_for_replies(int max_secs, int *max_replies)
{
time_t timeout_end = time(NULL) + max_secs;
while ((!max_replies || (*max_replies)-- > 0)
&& (time(NULL) < timeout_end)) {
message_dispatch();
}
}
/****************************************************************************
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 from PID %u\n",(unsigned int)src);
}
/****************************************************************************
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 i;
int debuglevel_class[DBGC_LAST];
memcpy(debuglevel_class, buf, len);
printf("Current debug level of PID %u is %d ",(unsigned int)src, debuglevel_class[0]);
for (i=1;i<DBGC_LAST;i++)
if (debuglevel_class[i])
printf("%s:%d ", debug_classname_from_index(i), debuglevel_class[i]);
printf("\n");
got_level = True;
}
/****************************************************************************
Prints out the current Profile level returned by MSG_PROFILELEVEL
****************************************************************************/
void profilelevel_function(int msg_type, pid_t src, void *buf, size_t len)
{
int level;
char *s=NULL;
memcpy(&level, buf, sizeof(int));
if (level) {
switch (level) {
case 1:
s = "off";
break;
case 3:
s = "count only";
break;
case 7:
s = "count and time";
break;
}
printf("Profiling %s on PID %u\n",s,(unsigned int)src);
} else {
printf("Profiling not available on PID %u\n",(unsigned int)src);
}
got_level = True;
}
/**
* Handle reply from POOL_USAGE.
**/
static void pool_usage_cb(int msg_type, pid_t src_pid, void *buf, size_t len)
{
printf("Got POOL_USAGE reply from pid%u:\n%.*s",
(unsigned int) src_pid, (int) len, (const char *) buf);
}
/**
* Send a message to a named destination
*
* @return False if an error occurred.
**/
static BOOL send_message(char *dest, int msg_type, void *buf, int len, BOOL duplicates)
{
pid_t pid;
/* "smbd" is the only broadcast operation */
if (strequal(dest,"smbd")) {
TDB_CONTEXT *tdb;
BOOL ret;
int n_sent = 0;
tdb = tdb_open_log(lock_path("connections.tdb"), 0, TDB_DEFAULT, O_RDWR, 0);
if (!tdb) {
fprintf(stderr,"Failed to open connections database in send_message.\n");
return False;
}
ret = message_send_all(tdb,msg_type, buf, len, duplicates,
&n_sent);
DEBUG(10,("smbcontrol/send_message: broadcast message to "
"%d processes\n", n_sent));
tdb_close(tdb);
return ret;
} else if (strequal(dest,"nmbd")) {
pid = pidfile_pid(dest);
if (pid == 0) {
fprintf(stderr,"Can't find pid for nmbd\n");
return False;
}
} else if (strequal(dest,"self")) {
pid = getpid();
} else {
pid = atoi(dest);
if (pid == 0) {
fprintf(stderr,"Not a valid pid\n");
return False;
}
}
DEBUG(10,("smbcontrol/send_message: send message to pid%d\n", pid));
return message_send_pid(pid, msg_type, buf, len, duplicates);
}
/****************************************************************************
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, int iparams, char **params)
{
int i, n, v;
int mtype;
BOOL retval=False;
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: {
struct debuglevel_message dm;
if (!params || !params[0]) {
fprintf(stderr,"MSG_DEBUG needs a parameter\n");
return(False);
}
ZERO_STRUCT(dm);
if (!debug_parse_params(params, dm.debuglevel_class, dm.debuglevel_class_isset)) {
fprintf(stderr, "MSG_DEBUG error. Expected <class name>:level\n");
return(False);
} else
send_message(dest, MSG_DEBUG, &dm, sizeof(dm), False);
break;
}
case MSG_PROFILE:
if (!params || !params[0]) {
fprintf(stderr,"MSG_PROFILE needs a parameter\n");
return(False);
}
if (strequal(params[0], "off")) {
v = 0;
} else if (strequal(params[0], "count")) {
v = 1;
} else if (strequal(params[0], "on")) {
v = 2;
} else if (strequal(params[0], "flush")) {
v = 3;
} else {
fprintf(stderr,
"MSG_PROFILE parameter must be off, count, on, or flush\n");
return(False);
}
send_message(dest, MSG_PROFILE, &v, sizeof(int), False);
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, False);
break;
case MSG_REQ_PROFILELEVEL:
if (!profilelevel_registered) {
message_register(MSG_PROFILELEVEL, profilelevel_function);
profilelevel_registered = True;
}
got_level = False;
retval = send_message(dest, MSG_REQ_PROFILELEVEL, NULL, 0, True);
if (retval) {
timeout_start = time(NULL);
while (!got_level) {
message_dispatch();
if ((time(NULL) - timeout_start) > MAX_WAIT) {
fprintf(stderr,"profilelevel timeout\n");
break;
}
}
}
break;
case MSG_REQ_DEBUGLEVEL:
if (!debuglevel_registered) {
message_register(MSG_DEBUGLEVEL, debuglevel_function);
debuglevel_registered = True;
}
got_level = False;
retval = send_message(dest, MSG_REQ_DEBUGLEVEL, NULL, 0, True);
if (retval) {
timeout_start = time(NULL);
while (!got_level) {
message_dispatch();
if ((time(NULL) - timeout_start) > MAX_WAIT) {
fprintf(stderr,"debuglevel timeout\n");
break;
}
}
}
break;
case MSG_PRINTER_NOTIFY:
if (!strequal(dest, "smbd")) {
fprintf(stderr,"printer-notify can only be sent to smbd\n");
return(False);
}
if (!params || !params[0]) {
fprintf(stderr, "printer-notify needs a printer name\n");
return (False);
}
retval = send_message(dest, MSG_PRINTER_NOTIFY, params[0],
strlen(params[0]) + 1, False);
break;
case MSG_SMB_FORCE_TDIS:
if (!strequal(dest, "smbd")) {
fprintf(stderr,"close-share can only be sent to smbd\n");
return(False);
}
if (!params || !params[0]) {
fprintf(stderr, "close-share needs a share name or '*'\n");
return (False);
}
retval = send_message(dest, MSG_SMB_FORCE_TDIS, params[0],
strlen(params[0]) + 1, False);
break;
case MSG_SMB_SAM_SYNC:
if (!strequal(dest, "smbd")) {
fprintf(stderr, "samsync can only be sent to smbd\n");
return False;
}
if (params) {
fprintf(stderr, "samsync does not take any parameters\n");
return False;
}
retval = send_message(dest, MSG_SMB_SAM_SYNC, NULL, 0, False);
break;
case MSG_SMB_SAM_REPL: {
uint32 seqnum;
if (!strequal(dest, "smbd")) {
fprintf(stderr, "sam repl can only be sent to smbd\n");
return False;
}
if (!params || !params[0]) {
fprintf(stderr, "SAM_REPL needs a parameter\n");
return False;
}
seqnum = atoi(params[0]);
retval = send_message(dest, MSG_SMB_SAM_SYNC,
(char *)&seqnum, sizeof(uint32), False);
break;
}
case MSG_PING:
if (!pong_registered) {
message_register(MSG_PONG, pong_function);
pong_registered = True;
}
if (!params || !params[0]) {
fprintf(stderr,"MSG_PING needs a parameter\n");
return(False);
}
n = atoi(params[0]);
pong_count = 0;
for (i=0;i<n;i++) {
if (iparams > 1)
retval = send_message(dest, MSG_PING, params[1], strlen(params[1]) + 1, True);
else
retval = send_message(dest, MSG_PING, NULL, 0, True);
if (retval == False)
return False;
}
wait_for_replies(MAX_WAIT, &n);
if (n > 0) {
fprintf(stderr,"PING timeout\n");
}
break;
case MSG_REQ_POOL_USAGE:
if (!pool_usage_registered) {
message_register(MSG_POOL_USAGE, pool_usage_cb);
pool_usage_registered = True;
}
if (!send_message(dest, MSG_REQ_POOL_USAGE, NULL, 0, True))
return False;
wait_for_replies(MAX_WAIT, NULL);
break;
}
return (True);
}
int main(int argc, char *argv[])
{
int opt;
char temp[255];
extern int optind;
BOOL interactive = False;
setup_logging(argv[0],True);
if (argc < 2) usage(True);
while ((opt = getopt(argc, argv,"is:")) != EOF) {
switch (opt) {
case 'i':
interactive = True;
break;
case 's':
pstrcpy(dyn_CONFIGFILE, optarg);
break;
default:
printf("Unknown option %c (%d)\n", (char)opt, opt);
usage(True);
}
}
lp_load(dyn_CONFIGFILE,False,False,False);
if (!message_init()) exit(1);
argc -= optind;
argv = &argv[optind];
if (!interactive) {
if (argc < 2) usage(True);
/* Need to invert sense of return code -- samba
* routines mostly return True==1 for success, but
* shell needs 0. */
return ! do_command(argv[0],argv[1], argc-2, argc > 2 ? &argv[2] : 0);
}
while (True) {
char *myargv[4];
int myargc;
printf("smbcontrol> ");
if (!fgets(temp, sizeof(temp)-1, stdin)) break;
myargc = 0;
while ((myargc < 4) &&
(myargv[myargc] = strtok(myargc?NULL:temp," \t\n"))) {
myargc++;
}
if (!myargc) break;
if (strequal(myargv[0],"q")) break;
if (myargc < 2)
usage(False);
else if (!do_command(myargv[0],myargv[1],myargc-2,myargc > 2 ? &myargv[2] : 0))
usage(False);
}
return(0);
}
|