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 %u\n",(unsigned int)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 i;
  81         int debuglevel_class[DBGC_LAST];
  82
  83         memcpy(debuglevel_class, buf, len);
  84
  85         printf("Current debug level of PID %u is %d ",(unsigned int)src, debuglevel_class[0]);
  86         for (i=1;i<DBGC_LAST;i++)
  87                 if (debuglevel_class[i])
  88                         printf("%s:%d ", debug_classname_from_index(i), debuglevel_class[i]);
  89         printf("\n");
  90
  91         got_level = True;
  92 }
  93
  94 /****************************************************************************
  95 Prints out the current Profile level returned by MSG_PROFILELEVEL
  96 ****************************************************************************/
  97 void profilelevel_function(int msg_type, pid_t src, void *buf, size_t len)
  98 {
  99         int level;
 100         char *s=NULL;
 101         memcpy(&level, buf, sizeof(int));
 102
 103         if (level) {
 104             switch (level) {
 105             case 1:
 106                 s = "off";
 107                 break;
 108             case 3:
 109                 s = "count only";
 110                 break;
 111             case 7:
 112                 s = "count and time";
 113                 break;
 114             }
 115             printf("Profiling %s on PID %u\n",s,(unsigned int)src);
 116         } else {
 117             printf("Profiling not available on PID %u\n",(unsigned int)src);
 118         }
 119         got_level = True;
 120 }
 121
 122 /****************************************************************************
 123 send a message to a named destination
 124 ****************************************************************************/
 125 static BOOL send_message(char *dest, int msg_type, void *buf, int len, BOOL duplicates)
 126 {
 127         pid_t pid;
 128         /* "smbd" is the only broadcast operation */
 129         if (strequal(dest,"smbd")) {
 130                 TDB_CONTEXT *tdb;
 131                 BOOL ret;
 132
 133                 tdb = tdb_open_log(lock_path("connections.tdb"), 0, 0, O_RDONLY, 0);
 134                 if (!tdb) {
 135                         fprintf(stderr,"Failed to open connections database in send_message.\n");
 136                         return False;
 137                 }
 138
 139                 ret = message_send_all(tdb,msg_type, buf, len, duplicates);
 140                 tdb_close(tdb);
 141
 142                 return ret;
 143         } else if (strequal(dest,"nmbd")) {
 144                 pid = pidfile_pid(dest);
 145                 if (pid == 0) {
 146                         fprintf(stderr,"Can't find pid for nmbd\n");
 147                         return False;
 148                 }
 149         } else if (strequal(dest,"self")) {
 150                 pid = getpid();
 151         } else {
 152                 pid = atoi(dest);
 153                 if (pid == 0) {
 154                         fprintf(stderr,"Not a valid pid\n");
 155                         return False;
 156                 }
 157         }
 158
 159         return message_send_pid(pid, msg_type, buf, len, duplicates);
 160 }
 161
 162 /****************************************************************************
 163 evaluate a message type string
 164 ****************************************************************************/
 165 static int parse_type(char *mtype)
 166 {
 167         int i;
 168         for (i=0;msg_types[i].name;i++) {
 169                 if (strequal(mtype, msg_types[i].name)) return msg_types[i].value;
 170         }
 171         return -1;
 172 }
 173
 174
 175 /****************************************************************************
 176 do command
 177 ****************************************************************************/
 178 static BOOL do_command(char *dest, char *msg_name, char **params)
 179 {
 180         int i, n, v;
 181         int mtype;
 182         BOOL retval=False;
 183
 184         mtype = parse_type(msg_name);
 185         if (mtype == -1) {
 186                 fprintf(stderr,"Couldn't resolve message type: %s\n", msg_name);
 187                 return(False);
 188         }
 189
 190         switch (mtype) {
 191         case MSG_DEBUG: {
 192                 struct debuglevel_message dm;
 193
 194                 if (!params || !params[0]) {
 195                         fprintf(stderr,"MSG_DEBUG needs a parameter\n");
 196                         return(False);
 197                 }
 198
 199                 ZERO_STRUCT(dm);
 200                 if (!debug_parse_params(params, dm.debuglevel_class, dm.debuglevel_class_isset)) {
 201                         fprintf(stderr, "MSG_DEBUG error. Expected <class name>:level\n");
 202                         return(False);
 203                 } else
 204                         send_message(dest, MSG_DEBUG, &dm, sizeof(dm), False);
 205                 break;
 206         }
 207
 208         case MSG_PROFILE:
 209                 if (!params[0]) {
 210                         fprintf(stderr,"MSG_PROFILE needs a parameter\n");
 211                         return(False);
 212                 }
 213                 if (strequal(params[0], "off")) {
 214                         v = 0;
 215                 } else if (strequal(params[0], "count")) {
 216                         v = 1;
 217                 } else if (strequal(params[0], "on")) {
 218                         v = 2;
 219                 } else if (strequal(params[0], "flush")) {
 220                         v = 3;
 221                 } else {
 222                     fprintf(stderr,
 223                         "MSG_PROFILE parameter must be off, count, on, or flush\n");
 224                     return(False);
 225                 }
 226                 send_message(dest, MSG_PROFILE, &v, sizeof(int), False);
 227                 break;
 228
 229         case MSG_FORCE_ELECTION:
 230                 if (!strequal(dest, "nmbd")) {
 231                         fprintf(stderr,"force-election can only be sent to nmbd\n");
 232                         return(False);
 233                 }
 234                 send_message(dest, MSG_FORCE_ELECTION, NULL, 0, False);
 235                 break;
 236
 237         case MSG_REQ_PROFILELEVEL:
 238                 if (!profilelevel_registered) {
 239                     message_register(MSG_PROFILELEVEL, profilelevel_function);
 240                     profilelevel_registered = True;
 241                 }
 242                 got_level = False;
 243                 retval = send_message(dest, MSG_REQ_PROFILELEVEL, NULL, 0, True);
 244                 if (retval) {
 245                         timeout_start = time(NULL);
 246                         while (!got_level) {
 247                                 message_dispatch();
 248                                 if ((time(NULL) - timeout_start) > MAX_WAIT) {
 249                                         fprintf(stderr,"profilelevel timeout\n");
 250                                         break;
 251                                 }
 252                         }
 253                 }
 254                 break;
 255
 256         case MSG_REQ_DEBUGLEVEL:
 257                 if (!debuglevel_registered) {
 258                     message_register(MSG_DEBUGLEVEL, debuglevel_function);
 259                     debuglevel_registered = True;
 260                 }
 261                 got_level = False;
 262                 retval = send_message(dest, MSG_REQ_DEBUGLEVEL, NULL, 0, True);
 263                 if (retval) {
 264                         timeout_start = time(NULL);
 265                         while (!got_level) {
 266                                 message_dispatch();
 267                                 if ((time(NULL) - timeout_start) > MAX_WAIT) {
 268                                         fprintf(stderr,"debuglevel timeout\n");
 269                                         break;
 270                                 }
 271                         }
 272                 }
 273                 break;
 274
 275         case MSG_PRINTER_NOTIFY:
 276                 if (!strequal(dest, "smbd")) {
 277                         fprintf(stderr,"printer-notify can only be sent to smbd\n");
 278                         return(False);
 279                 }
 280                 if (!params[0]) {
 281                         fprintf(stderr, "printer-notify needs a printer name\n");
 282                         return (False);
 283                 }
 284                 retval = send_message(dest, MSG_PRINTER_NOTIFY, params[0],
 285                                       strlen(params[0]) + 1, False);
 286                 break;
 287
 288         case MSG_PING:
 289                 if (!pong_registered) {
 290                     message_register(MSG_PONG, pong_function);
 291                     pong_registered = True;
 292                 }
 293                 if (!params[0]) {
 294                         fprintf(stderr,"MSG_PING needs a parameter\n");
 295                         return(False);
 296                 }
 297                 n = atoi(params[0]);
 298                 pong_count = 0;
 299                 for (i=0;i<n;i++) {
 300                         retval = send_message(dest, MSG_PING, NULL, 0, True);
 301                         if (retval == False) break;
 302                 }
 303                 if (retval) {
 304                         timeout_start = time(NULL);
 305                         while (pong_count < n) {
 306                                 message_dispatch();
 307                                 if ((time(NULL) - timeout_start) > MAX_WAIT) {
 308                                         fprintf(stderr,"PING timeout\n");
 309                                         break;
 310                                 }
 311                         }
 312                 }
 313                 break;
 314
 315         }
 316
 317         return (True);
 318 }
 319
 320  int main(int argc, char *argv[])
 321 {
 322         int opt;
 323         char temp[255];
 324         extern int optind;
 325         pstring servicesf = CONFIGFILE;
 326         BOOL interactive = False;
 327
 328         TimeInit();
 329         setup_logging(argv[0],True);
 330
 331         charset_initialise();
 332         lp_load(servicesf,False,False,False);
 333
 334         if (!message_init()) exit(1);
 335
 336         if (argc < 2) usage(True);
 337
 338         while ((opt = getopt(argc, argv,"i")) != EOF) {
 339                 switch (opt) {
 340                 case 'i':
 341                         interactive = True;
 342                         break;
 343                 default:
 344                         printf("Unknown option %c (%d)\n", (char)opt, opt);
 345                         usage(True);
 346                 }
 347         }
 348
 349         argc -= optind;
 350         argv = &argv[optind];
 351
 352         if (!interactive) {
 353                 if (argc < 2) usage(True);
 354                 return (do_command(argv[0],argv[1],argc > 2 ? &argv[2] : 0));
 355         }
 356
 357         while (True) {
 358                 char *myargv[3];
 359                 int myargc;
 360
 361                 printf("smbcontrol> ");
 362                 if (!fgets(temp, sizeof(temp)-1, stdin)) break;
 363                 myargc = 0;
 364                 while ((myargc < 3) &&
 365                        (myargv[myargc] = strtok(myargc?NULL:temp," \t\n"))) {
 366                         myargc++;
 367                 }
 368                 if (!myargc) break;
 369                 if (strequal(myargv[0],"q")) break;
 370                 if (myargc < 2)
 371                         usage(False);
 372                 else if (!do_command(myargv[0],myargv[1],myargc > 2 ? &myargv[2] : 0))
 373                         usage(False);
 374         }
 375         return(0);
 376 }
 377