source3/utils/smbcontrol.c

   1 /*
   2    Unix SMB/Netbios implementation.
   3    Version 3.0
   4    program to send control messages to Samba processes
   5    Copyright (C) Andrew Tridgell 1994-1998
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 2 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; if not, write to the Free Software
  19    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20 */
  21
  22 #define NO_SYSLOG
  23
  24 #include "includes.h"
  25
  26 static struct {
  27         char *name;
  28         int value;
  29 } msg_types[] = {
  30         {"debug", MSG_DEBUG},
  31         {"force-election", MSG_FORCE_ELECTION},
  32         {"ping", MSG_PING},
  33         {"profile", MSG_PROFILE},
  34         {"debuglevel", MSG_REQ_DEBUGLEVEL},
  35         {NULL, -1}
  36 };
  37
  38 static void usage(BOOL doexit)
  39 {
  40         int i;
  41         if (doexit) {
  42                 printf("Usage: smbcontrol -i\n");
  43                 printf("       smbcontrol <destination> <message-type> <parameters>\n\n");
  44         } else {
  45                 printf("<destination> <message-type> <parameters>\n\n");
  46         }
  47         printf("\t<destination> is one of \"nmbd\", \"smbd\" or a process ID\n");
  48         printf("\t<message-type> is one of: ");
  49         for (i=0; msg_types[i].name; i++)
  50             printf("%s%s", i?", ":"",msg_types[i].name);
  51         printf("\n");
  52         if (doexit) exit(1);
  53 }
  54
  55 static int pong_count;
  56 static BOOL got_level;
  57 static BOOL pong_registered = False;
  58 static BOOL debuglevel_registered = False;
  59
  60
  61 /****************************************************************************
  62 a useful function for testing the message system
  63 ****************************************************************************/
  64 void pong_function(int msg_type, pid_t src, void *buf, size_t len)
  65 {
  66         pong_count++;
  67         printf("PONG\n");
  68 }
  69
  70 /****************************************************************************
  71 Prints out the current Debug level returned by MSG_DEBUGLEVEL
  72 ****************************************************************************/
  73 void debuglevel_function(int msg_type, pid_t src, void *buf, size_t len)
  74 {
  75         int level;
  76         memcpy(&level, buf, sizeof(int));
  77
  78         printf("Current debug level is %d\n",level);
  79         got_level = True;
  80 }
  81
  82 /****************************************************************************
  83 send a message to a named destination
  84 ****************************************************************************/
  85 static BOOL send_message(char *dest, int msg_type, void *buf, int len)
  86 {
  87         pid_t pid;
  88
  89         /* "smbd" is the only broadcast operation */
  90         if (strequal(dest,"smbd")) {
  91                 return message_send_all(msg_type, buf, len);
  92         } else if (strequal(dest,"nmbd")) {
  93                 pid = pidfile_pid(dest);
  94                 if (pid == 0) {
  95                         fprintf(stderr,"Can't find pid for nmbd\n");
  96                         return False;
  97                 }
  98         } else {
  99                 pid = atoi(dest);
 100                 if (pid == 0) {
 101                         fprintf(stderr,"Not a valid pid\n");
 102                         return False;
 103                 }
 104         }
 105
 106         return message_send_pid(pid, msg_type, buf, len);
 107 }
 108
 109 /****************************************************************************
 110 evaluate a message type string
 111 ****************************************************************************/
 112 static int parse_type(char *mtype)
 113 {
 114         int i;
 115         for (i=0;msg_types[i].name;i++) {
 116                 if (strequal(mtype, msg_types[i].name)) return msg_types[i].value;
 117         }
 118         return -1;
 119 }
 120
 121
 122 /****************************************************************************
 123 do command
 124 ****************************************************************************/
 125 static BOOL do_command(char *dest, char *msg_name, char *params)
 126 {
 127         int i, n, v;
 128         int mtype;
 129
 130         mtype = parse_type(msg_name);
 131         if (mtype == -1) {
 132                 fprintf(stderr,"Couldn't resolve message type: %s\n", msg_name);
 133                 return(False);
 134         }
 135
 136         switch (mtype) {
 137         case MSG_DEBUG:
 138                 if (!params) {
 139                         fprintf(stderr,"MSG_DEBUG needs a parameter\n");
 140                         return(False);
 141                 }
 142                 v = atoi(params);
 143                 send_message(dest, MSG_DEBUG, &v, sizeof(int));
 144                 break;
 145
 146         case MSG_PROFILE:
 147                 if (!params) {
 148                         fprintf(stderr,"MSG_PROFILE needs a parameter\n");
 149                         return(False);
 150                 }
 151                 if (strequal(params, "on")) {
 152                         v = 2;
 153                 } else if (strequal(params, "off")) {
 154                         v = 0;
 155                 } else if (strequal(params, "count")) {
 156                         v = 1;
 157                 } else {
 158                     fprintf(stderr,
 159                         "MSG_PROFILE parameter must be on, off, or count\n");
 160                     return(False);
 161                 }
 162                 send_message(dest, MSG_PROFILE, &v, sizeof(int));
 163                 break;
 164
 165         case MSG_FORCE_ELECTION:
 166                 if (!strequal(dest, "nmbd")) {
 167                         fprintf(stderr,"force-election can only be sent to nmbd\n");
 168                         return(False);
 169                 }
 170                 send_message(dest, MSG_FORCE_ELECTION, NULL, 0);
 171                 break;
 172
 173         case MSG_REQ_DEBUGLEVEL:
 174                 if (!debuglevel_registered) {
 175                     message_register(MSG_DEBUGLEVEL, debuglevel_function);
 176                     debuglevel_registered = True;
 177                 }
 178                 if (strequal(dest, "nmbd") || strequal(dest, "smbd")) {
 179                     fprintf(stderr,"debuglevel can only be sent to a PID\n");
 180                     return(False);
 181                 }
 182                 got_level = False;
 183                 send_message(dest, MSG_REQ_DEBUGLEVEL, NULL, 0);
 184                 while (!got_level) message_dispatch();
 185                 break;
 186
 187         case MSG_PING:
 188                 if (!pong_registered) {
 189                     message_register(MSG_PONG, pong_function);
 190                     pong_registered = True;
 191                 }
 192                 if (!params) {
 193                         fprintf(stderr,"MSG_PING needs a parameter\n");
 194                         return(False);
 195                 }
 196                 n = atoi(params);
 197                 pong_count = 0;
 198                 for (i=0;i<n;i++) {
 199                         send_message(dest, MSG_PING, NULL, 0);
 200                 }
 201                 while (pong_count < n) message_dispatch();
 202                 break;
 203
 204         }
 205
 206         return (True);
 207 }
 208
 209  int main(int argc, char *argv[])
 210 {
 211         int opt;
 212         char temp[255];
 213         extern int optind;
 214         pstring servicesf = CONFIGFILE;
 215         BOOL interactive = False;
 216
 217         TimeInit();
 218         setup_logging(argv[0],True);
 219
 220         charset_initialise();
 221         lp_load(servicesf,False,False,False);
 222
 223         message_init();
 224
 225         if (argc < 2) usage(True);
 226
 227         while ((opt = getopt(argc, argv,"i")) != EOF) {
 228                 switch (opt) {
 229                 case 'i':
 230                         interactive = True;
 231                         break;
 232                 default:
 233                         printf("Unknown option %c (%d)\n", (char)opt, opt);
 234                         usage(True);
 235                 }
 236         }
 237
 238         argc -= optind;
 239         argv = &argv[optind];
 240
 241         if (!interactive) {
 242                 if (argc < 2) usage(True);
 243                 return (do_command(argv[0],argv[1],argc > 2 ? argv[2] : 0));
 244         }
 245
 246         while (True) {
 247                 char *myargv[3];
 248                 int myargc;
 249
 250                 printf("smbcontrol> ");
 251                 if (!gets(temp)) break;
 252                 myargc = 0;
 253                 while ((myargc < 3) &&
 254                        (myargv[myargc] = strtok(myargc?NULL:temp," \t"))) {
 255                         myargc++;
 256                 }
 257                 if (!myargc) break;
 258                 if (myargc < 2)
 259                         usage(False);
 260                 else if (!do_command(myargv[0],myargv[1],myargc > 2 ? myargv[2] : 0))
 261                         usage(False);
 262         }
 263         return(0);
 264 }
 265