source/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 #include "includes.h"
  23
  24 static struct {
  25         char *name;
  26         int value;
  27 } msg_types[] = {
  28         {"debug", MSG_DEBUG},
  29         {"force-election", MSG_FORCE_ELECTION},
  30         {"ping", MSG_PING},
  31         {"profile", MSG_PROFILE},
  32         {"profilelevel", MSG_REQ_PROFILELEVEL},
  33         {"debuglevel", MSG_REQ_DEBUGLEVEL},
  34         {"printer-notify", MSG_PRINTER_NOTIFY},
  35         {NULL, -1}
  36 };
  37
  38 time_t timeout_start;
  39
  40 #define MAX_WAIT        10
  41
  42 static void usage(BOOL doexit)
  43 {
  44         int i;
  45         if (doexit) {
  46                 printf("Usage: smbcontrol -i\n");
  47                 printf("       smbcontrol <destination> <message-type> <parameters>\n\n");
  48         } else {
  49                 printf("<destination> <message-type> <parameters>\n\n");
  50         }
  51         printf("\t<destination> is one of \"nmbd\", \"smbd\" or a process ID\n");
  52         printf("\t<message-type> is one of: ");
  53         for (i=0; msg_types[i].name; i++)
  54             printf("%s%s", i?", ":"",msg_types[i].name);
  55         printf("\n");
  56         if (doexit) exit(1);
  57 }
  58
  59 static int pong_count;
  60 static BOOL got_level;
  61 static BOOL pong_registered = False;
  62 static BOOL debuglevel_registered = False;
  63 static BOOL profilelevel_registered = False;
  64
  65
  66 /****************************************************************************
  67 a useful function for testing the message system
  68 ****************************************************************************/
  69 void pong_function(int msg_type, pid_t src, void *buf, size_t len)
  70 {
  71         pong_count++;
  72         printf("PONG from PID %d\n",src);
  73 }
  74
  75 /****************************************************************************
  76 Prints out the current Debug level returned by MSG_DEBUGLEVEL
  77 ****************************************************************************/
  78 void debuglevel_function(int msg_type, pid_t src, void *buf, size_t len)
  79 {
  80         int level;
  81         memcpy(&level, buf, sizeof(int));
  82
  83         printf("Current debug level of PID %d is %d\n",src,level);
  84         got_level = True;
  85 }
  86
  87 /****************************************************************************
  88 Prints out the current Profile level returned by MSG_PROFILELEVEL
  89 ****************************************************************************/
  90 void profilelevel_function(int msg_type, pid_t src, void *buf, size_t len)
  91 {
  92         int level;
  93         char *s;
  94         memcpy(&level, buf, sizeof(int));
  95
  96         if (level) {
  97             switch (level) {
  98             case 1:
  99                 s = "off";
 100                 break;
 101             case 3:
 102                 s = "count only";
 103                 break;
 104             case 7:
 105                 s = "count and time";
 106                 break;
 107             }
 108             printf("Profiling %s on PID %d\n",s,src);
 109         } else {
 110             printf("Profiling not available on PID %d\n",src);
 111         }
 112         got_level = True;
 113 }
 114
 115 /****************************************************************************
 116 send a message to a named destination
 117 ****************************************************************************/
 118 static BOOL send_message(char *dest, int msg_type, void *buf, int len)
 119 {
 120         pid_t pid;
 121
 122         /* "smbd" is the only broadcast operation */
 123         if (strequal(dest,"smbd")) {
 124                 return message_send_all(msg_type, buf, len);
 125         } else if (strequal(dest,"nmbd")) {
 126                 pid = pidfile_pid(dest);
 127                 if (pid == 0) {
 128                         fprintf(stderr,"Can't find pid for nmbd\n");
 129                         return False;
 130                 }
 131         } else {
 132                 pid = atoi(dest);
 133                 if (pid == 0) {
 134                         fprintf(stderr,"Not a valid pid\n");
 135                         return False;
 136                 }
 137         }
 138
 139         return message_send_pid(pid, msg_type, buf, len);
 140 }
 141
 142 /****************************************************************************
 143 evaluate a message type string
 144 ****************************************************************************/
 145 static int parse_type(char *mtype)
 146 {
 147         int i;
 148         for (i=0;msg_types[i].name;i++) {
 149                 if (strequal(mtype, msg_types[i].name)) return msg_types[i].value;
 150         }
 151         return -1;
 152 }
 153
 154
 155 /****************************************************************************
 156 do command
 157 ****************************************************************************/
 158 static BOOL do_command(char *dest, char *msg_name, char *params)
 159 {
 160         int i, n, v;
 161         int mtype;
 162         BOOL retval;
 163
 164         mtype = parse_type(msg_name);
 165         if (mtype == -1) {
 166                 fprintf(stderr,"Couldn't resolve message type: %s\n", msg_name);
 167                 return(False);
 168         }
 169
 170         switch (mtype) {
 171         case MSG_DEBUG:
 172                 if (!params) {
 173                         fprintf(stderr,"MSG_DEBUG needs a parameter\n");
 174                         return(False);
 175                 }
 176                 v = atoi(params);
 177                 send_message(dest, MSG_DEBUG, &v, sizeof(int));
 178                 break;
 179
 180         case MSG_PROFILE:
 181                 if (!params) {
 182                         fprintf(stderr,"MSG_PROFILE needs a parameter\n");
 183                         return(False);
 184                 }
 185                 if (strequal(params, "off")) {
 186                         v = 0;
 187                 } else if (strequal(params, "count")) {
 188                         v = 1;
 189                 } else if (strequal(params, "on")) {
 190                         v = 2;
 191                 } else if (strequal(params, "flush")) {
 192                         v = 3;
 193                 } else {
 194                     fprintf(stderr,
 195                         "MSG_PROFILE parameter must be off, count, on, or flush\n");
 196                     return(False);
 197                 }
 198                 send_message(dest, MSG_PROFILE, &v, sizeof(int));
 199                 break;
 200
 201         case MSG_FORCE_ELECTION:
 202                 if (!strequal(dest, "nmbd")) {
 203                         fprintf(stderr,"force-election can only be sent to nmbd\n");
 204                         return(False);
 205                 }
 206                 send_message(dest, MSG_FORCE_ELECTION, NULL, 0);
 207                 break;
 208
 209         case MSG_REQ_PROFILELEVEL:
 210                 if (!profilelevel_registered) {
 211                     message_register(MSG_PROFILELEVEL, profilelevel_function);
 212                     profilelevel_registered = True;
 213                 }
 214                 got_level = False;
 215                 retval = send_message(dest, MSG_REQ_PROFILELEVEL, NULL, 0);
 216                 if (retval) {
 217                         timeout_start = time(NULL);
 218                         while (!got_level) {
 219                                 message_dispatch();
 220                                 if ((time(NULL) - timeout_start) > MAX_WAIT) {
 221                                         fprintf(stderr,"profilelevel timeout\n");
 222                                         break;
 223                                 }
 224                         }
 225                 }
 226                 break;
 227
 228         case MSG_REQ_DEBUGLEVEL:
 229                 if (!debuglevel_registered) {
 230                     message_register(MSG_DEBUGLEVEL, debuglevel_function);
 231                     debuglevel_registered = True;
 232                 }
 233                 got_level = False;
 234                 retval = send_message(dest, MSG_REQ_DEBUGLEVEL, NULL, 0);
 235                 if (retval) {
 236                         timeout_start = time(NULL);
 237                         while (!got_level) {
 238                                 message_dispatch();
 239                                 if ((time(NULL) - timeout_start) > MAX_WAIT) {
 240                                         fprintf(stderr,"debuglevel timeout\n");
 241                                         break;
 242                                 }
 243                         }
 244                 }
 245                 break;
 246
 247         case MSG_PRINTER_NOTIFY:
 248                 if (!strequal(dest, "smbd")) {
 249                         fprintf(stderr,"printer-notify can only be sent to smbd\n");
 250                         return(False);
 251                 }
 252                 if (!params) {
 253                         fprintf(stderr, "printer-notify needs a printer name\n");
 254                         return (False);
 255                 }
 256                 retval = send_message(dest, MSG_PRINTER_NOTIFY, params,
 257                                       strlen(params) + 1);
 258                 break;
 259
 260         case MSG_PING:
 261                 if (!pong_registered) {
 262                     message_register(MSG_PONG, pong_function);
 263                     pong_registered = True;
 264                 }
 265                 if (!params) {
 266                         fprintf(stderr,"MSG_PING needs a parameter\n");
 267                         return(False);
 268                 }
 269                 n = atoi(params);
 270                 pong_count = 0;
 271                 for (i=0;i<n;i++) {
 272                         retval = send_message(dest, MSG_PING, NULL, 0);
 273                         if (retval == False) break;
 274                 }
 275                 if (retval) {
 276                         timeout_start = time(NULL);
 277                         while (pong_count < n) {
 278                                 message_dispatch();
 279                                 if ((time(NULL) - timeout_start) > MAX_WAIT) {
 280                                         fprintf(stderr,"PING timeout\n");
 281                                         break;
 282                                 }
 283                         }
 284                 }
 285                 break;
 286
 287         }
 288
 289         return (True);
 290 }
 291
 292  int main(int argc, char *argv[])
 293 {
 294         int opt;
 295         char temp[255];
 296         extern int optind;
 297         pstring servicesf = CONFIGFILE;
 298         BOOL interactive = False;
 299
 300         TimeInit();
 301         setup_logging(argv[0],True);
 302
 303         charset_initialise();
 304         lp_load(servicesf,False,False,False);
 305
 306         if (!message_init()) exit(1);
 307
 308         if (argc < 2) usage(True);
 309
 310         while ((opt = getopt(argc, argv,"i")) != EOF) {
 311                 switch (opt) {
 312                 case 'i':
 313                         interactive = True;
 314                         break;
 315                 default:
 316                         printf("Unknown option %c (%d)\n", (char)opt, opt);
 317                         usage(True);
 318                 }
 319         }
 320
 321         argc -= optind;
 322         argv = &argv[optind];
 323
 324         if (!interactive) {
 325                 if (argc < 2) usage(True);
 326                 return (do_command(argv[0],argv[1],argc > 2 ? argv[2] : 0));
 327         }
 328
 329         while (True) {
 330                 char *myargv[3];
 331                 int myargc;
 332
 333                 printf("smbcontrol> ");
 334                 if (!fgets(temp, sizeof(temp)-1, stdin)) break;
 335                 myargc = 0;
 336                 while ((myargc < 3) &&
 337                        (myargv[myargc] = strtok(myargc?NULL:temp," \t\n"))) {
 338                         myargc++;
 339                 }
 340                 if (!myargc) break;
 341                 if (strequal(myargv[0],"q")) break;
 342                 if (myargc < 2)
 343                         usage(False);
 344                 else if (!do_command(myargv[0],myargv[1],myargc > 2 ? myargv[2] : 0))
 345                         usage(False);
 346         }
 347         return(0);
 348 }
 349