source/web/statuspage.c

   1 /*
   2    Unix SMB/Netbios implementation.
   3    Version 2.2.
   4    web status page
   5    Copyright (C) Andrew Tridgell 1997-1998
   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 #define PIDMAP          struct PidMap
  25
  26 PIDMAP {
  27         PIDMAP  *next, *prev;
  28         pid_t   pid;
  29         char    *machine;
  30 };
  31
  32 static PIDMAP   *pidmap;
  33 static int      PID_or_Machine;         /* 0 = show PID, else show Machine name */
  34
  35 static pid_t smbd_pid;
  36
  37 /* from 2nd call on, remove old list */
  38 static void initPid2Machine (void)
  39 {
  40         /* show machine name rather PID on table "Open Files"? */
  41         if (PID_or_Machine) {
  42                 PIDMAP *p;
  43
  44                 for (p = pidmap; p != NULL; ) {
  45                         DLIST_REMOVE(pidmap, p);
  46                         SAFE_FREE(p->machine);
  47                         SAFE_FREE(p);
  48                 }
  49
  50                 pidmap = NULL;
  51         }
  52 }
  53
  54 /* add new PID <-> Machine name mapping */
  55 static void addPid2Machine (pid_t pid, char *machine)
  56 {
  57         /* show machine name rather PID on table "Open Files"? */
  58         if (PID_or_Machine) {
  59                 PIDMAP *newmap;
  60
  61                 if ((newmap = (PIDMAP *) malloc (sizeof (PIDMAP))) == NULL) {
  62                         /* XXX need error message for this?
  63                            if malloc fails, PID is always shown */
  64                         return;
  65                 }
  66
  67                 newmap->pid = pid;
  68                 newmap->machine = strdup (machine);
  69
  70                 DLIST_ADD(pidmap, newmap);
  71         }
  72 }
  73
  74 /* lookup PID <-> Machine name mapping */
  75 static char *mapPid2Machine (pid_t pid)
  76 {
  77         static char pidbuf [64];
  78         PIDMAP *map;
  79
  80         /* show machine name rather PID on table "Open Files"? */
  81         if (PID_or_Machine) {
  82                 for (map = pidmap; map != NULL; map = map->next) {
  83                         if (pid == map->pid) {
  84                                 if (map->machine == NULL)       /* no machine name */
  85                                         break;                  /* show PID */
  86
  87                                 return map->machine;
  88                         }
  89                 }
  90         }
  91
  92         /* PID not in list or machine name NULL? return pid as string */
  93         snprintf (pidbuf, sizeof (pidbuf) - 1, "%d", pid);
  94         return pidbuf;
  95 }
  96
  97 static char *tstring(time_t t)
  98 {
  99         static pstring buf;
 100         pstrcpy(buf, asctime(LocalTime(&t)));
 101         all_string_sub(buf," ","&nbsp;",sizeof(buf));
 102         return buf;
 103 }
 104
 105 static void print_share_mode(share_mode_entry *e, char *fname)
 106 {
 107         printf("<tr><td>%s</td>", mapPid2Machine (e->pid));
 108         printf("<td>");
 109         switch ((e->share_mode>>4)&0xF) {
 110         case DENY_NONE: printf("DENY_NONE"); break;
 111         case DENY_ALL:  printf("DENY_ALL   "); break;
 112         case DENY_DOS:  printf("DENY_DOS   "); break;
 113         case DENY_READ: printf("DENY_READ  "); break;
 114         case DENY_WRITE:printf("DENY_WRITE "); break;
 115         }
 116         printf("</td>");
 117
 118         printf("<td>");
 119         switch (e->share_mode&0xF) {
 120         case 0: printf("RDONLY     "); break;
 121         case 1: printf("WRONLY     "); break;
 122         case 2: printf("RDWR       "); break;
 123         }
 124         printf("</td>");
 125
 126         printf("<td>");
 127         if((e->op_type &
 128             (EXCLUSIVE_OPLOCK|BATCH_OPLOCK)) ==
 129            (EXCLUSIVE_OPLOCK|BATCH_OPLOCK))
 130                 printf("EXCLUSIVE+BATCH ");
 131         else if (e->op_type & EXCLUSIVE_OPLOCK)
 132                 printf("EXCLUSIVE       ");
 133         else if (e->op_type & BATCH_OPLOCK)
 134                 printf("BATCH           ");
 135         else if (e->op_type & LEVEL_II_OPLOCK)
 136                 printf("LEVEL_II        ");
 137         else
 138                 printf("NONE            ");
 139         printf("</td>");
 140
 141         printf("<td>%s</td><td>%s</td></tr>\n",
 142                dos_to_unix(fname,False),tstring(e->time.tv_sec));
 143 }
 144
 145
 146 /* kill off any connections chosen by the user */
 147 static int traverse_fn1(TDB_CONTEXT *tdb, TDB_DATA kbuf, TDB_DATA dbuf, void* state)
 148 {
 149         struct connections_data crec;
 150
 151         if (dbuf.dsize != sizeof(crec))
 152                 return 0;
 153
 154         memcpy(&crec, dbuf.dptr, sizeof(crec));
 155
 156         if (crec.cnum == -1 && process_exists(crec.pid)) {
 157                 char buf[30];
 158                 slprintf(buf,sizeof(buf)-1,"kill_%d", (int)crec.pid);
 159                 if (cgi_variable(buf)) {
 160                         kill_pid(crec.pid);
 161                 }
 162         }
 163         return 0;
 164 }
 165
 166 /* traversal fn for showing machine connections */
 167 static int traverse_fn2(TDB_CONTEXT *tdb, TDB_DATA kbuf, TDB_DATA dbuf, void* state)
 168 {
 169         struct connections_data crec;
 170
 171         if (dbuf.dsize != sizeof(crec))
 172                 return 0;
 173
 174         memcpy(&crec, dbuf.dptr, sizeof(crec));
 175
 176         if (crec.cnum != -1 || !process_exists(crec.pid) || (crec.pid == smbd_pid))
 177                 return 0;
 178
 179         addPid2Machine (crec.pid, crec.machine);
 180
 181         printf("<tr><td>%d</td><td>%s</td><td>%s</td><td>%s</td>\n",
 182                (int)crec.pid,
 183                crec.machine,crec.addr,
 184                tstring(crec.start));
 185         if (geteuid() == 0) {
 186                 printf("<td><input type=submit value=\"X\" name=\"kill_%d\"></td>\n",
 187                        (int)crec.pid);
 188         }
 189         printf("</tr>\n");
 190
 191         return 0;
 192 }
 193
 194 /* traversal fn for showing share connections */
 195 static int traverse_fn3(TDB_CONTEXT *tdb, TDB_DATA kbuf, TDB_DATA dbuf, void* state)
 196 {
 197         struct connections_data crec;
 198
 199         if (dbuf.dsize != sizeof(crec))
 200                 return 0;
 201
 202         memcpy(&crec, dbuf.dptr, sizeof(crec));
 203
 204         if (crec.cnum == -1 || !process_exists(crec.pid))
 205                 return 0;
 206
 207         printf("<tr><td>%s</td><td>%s</td><td>%s</td><td>%d</td><td>%s</td><td>%s</td></tr>\n",
 208                crec.name,uidtoname(crec.uid),
 209                gidtoname(crec.gid),(int)crec.pid,
 210                crec.machine,
 211                tstring(crec.start));
 212         return 0;
 213 }
 214
 215
 216 /* show the current server status */
 217 void status_page(void)
 218 {
 219         char *v;
 220         int autorefresh=0;
 221         int refresh_interval=30;
 222         TDB_CONTEXT *tdb;
 223
 224         smbd_pid = pidfile_pid("smbd");
 225
 226         if (cgi_variable("smbd_restart")) {
 227                 stop_smbd();
 228                 start_smbd();
 229         }
 230
 231         if (cgi_variable("smbd_start")) {
 232                 start_smbd();
 233         }
 234
 235         if (cgi_variable("smbd_stop")) {
 236                 stop_smbd();
 237         }
 238
 239         if (cgi_variable("nmbd_restart")) {
 240                 stop_nmbd();
 241                 start_nmbd();
 242         }
 243         if (cgi_variable("nmbd_start")) {
 244                 start_nmbd();
 245         }
 246
 247         if (cgi_variable("nmbd_stop")) {
 248                 stop_nmbd();
 249         }
 250
 251         if (cgi_variable("autorefresh")) {
 252                 autorefresh = 1;
 253         } else if (cgi_variable("norefresh")) {
 254                 autorefresh = 0;
 255         } else if (cgi_variable("refresh")) {
 256                 autorefresh = 1;
 257         }
 258
 259         if ((v=cgi_variable("refresh_interval"))) {
 260                 refresh_interval = atoi(v);
 261         }
 262
 263         if (cgi_variable("show_client_in_col_1")) {
 264                 PID_or_Machine = 1;
 265         }
 266
 267         tdb = tdb_open_log(lock_path("connections.tdb"), 0, TDB_DEFAULT, O_RDONLY, 0);
 268         if (tdb) tdb_traverse(tdb, traverse_fn1, NULL);
 269
 270         initPid2Machine ();
 271
 272         printf("<H2>Server Status</H2>\n");
 273
 274         printf("<FORM method=post>\n");
 275
 276         if (!autorefresh) {
 277                 printf("<input type=submit value=\"Auto Refresh\" name=autorefresh>\n");
 278                 printf("<br>Refresh Interval: ");
 279                 printf("<input type=text size=2 name=\"refresh_interval\" value=%d>\n",
 280                        refresh_interval);
 281         } else {
 282                 printf("<input type=submit value=\"Stop Refreshing\" name=norefresh>\n");
 283                 printf("<br>Refresh Interval: %d\n", refresh_interval);
 284                 printf("<input type=hidden name=refresh value=1>\n");
 285         }
 286
 287         printf("<p>\n");
 288
 289         if (!tdb) {
 290                 /* open failure either means no connections have been
 291                    made or status=no */
 292                 if (!lp_status(-1))
 293                         printf("You need to have status=yes in your smb config file\n");
 294         }
 295
 296
 297         printf("<table>\n");
 298
 299         printf("<tr><td>version:</td><td>%s</td></tr>",VERSION);
 300
 301         fflush(stdout);
 302         printf("<tr><td>smbd:</td><td>%srunning</td>\n",smbd_running()?"":"not ");
 303         if (geteuid() == 0) {
 304             if (smbd_running()) {
 305                 printf("<td><input type=submit name=\"smbd_stop\" value=\"Stop smbd\"></td>\n");
 306             } else {
 307                 printf("<td><input type=submit name=\"smbd_start\" value=\"Start smbd\"></td>\n");
 308             }
 309             printf("<td><input type=submit name=\"smbd_restart\" value=\"Restart smbd\"></td>\n");
 310         }
 311         printf("</tr>\n");
 312
 313         fflush(stdout);
 314         printf("<tr><td>nmbd:</td><td>%srunning</td>\n",nmbd_running()?"":"not ");
 315         if (geteuid() == 0) {
 316             if (nmbd_running()) {
 317                 printf("<td><input type=submit name=\"nmbd_stop\" value=\"Stop nmbd\"></td>\n");
 318             } else {
 319                 printf("<td><input type=submit name=\"nmbd_start\" value=\"Start nmbd\"></td>\n");
 320             }
 321             printf("<td><input type=submit name=\"nmbd_restart\" value=\"Restart nmbd\"></td>\n");
 322         }
 323         printf("</tr>\n");
 324
 325         printf("</table>\n");
 326         fflush(stdout);
 327
 328         printf("<p><h3>Active Connections</h3>\n");
 329         printf("<table border=1>\n");
 330         printf("<tr><th>PID</th><th>Client</th><th>IP address</th><th>Date</th>\n");
 331         if (geteuid() == 0) {
 332                 printf("<th>Kill</th>\n");
 333         }
 334         printf("</tr>\n");
 335
 336         if (tdb) tdb_traverse(tdb, traverse_fn2, NULL);
 337
 338         printf("</table><p>\n");
 339
 340         printf("<p><h3>Active Shares</h3>\n");
 341         printf("<table border=1>\n");
 342         printf("<tr><th>Share</th><th>User</th><th>Group</th><th>PID</th><th>Client</th><th>Date</th></tr>\n\n");
 343
 344         if (tdb) tdb_traverse(tdb, traverse_fn3, NULL);
 345
 346         printf("</table><p>\n");
 347
 348         printf("<h3>Open Files</h3>\n");
 349         printf("<table border=1>\n");
 350         printf("<tr><th>%s</th><th>Sharing</th><th>R/W</th><th>Oplock</th><th>File</th><th>Date</th></tr>\n", PID_or_Machine ? "Client" : "PID");
 351
 352         locking_init(1);
 353         share_mode_forall(print_share_mode);
 354         locking_end();
 355         printf("</table>\n");
 356
 357         if (tdb) tdb_close(tdb);
 358
 359         printf("<br><input type=submit name=\"show_client_in_col_1\" value=\"Show Client in col 1\">\n");
 360         printf("<input type=submit name=\"show_pid_in_col_1\" value=\"Show PID in col 1\">\n");
 361
 362         printf("</FORM>\n");
 363
 364         if (autorefresh) {
 365                 /* this little JavaScript allows for automatic refresh
 366                    of the page. There are other methods but this seems
 367                    to be the best alternative */
 368                 printf("<script language=\"JavaScript\">\n");
 369                 printf("<!--\nsetTimeout('window.location.replace(\"%s/status?refresh_interval=%d&refresh=1\")', %d)\n",
 370                        cgi_baseurl(),
 371                        refresh_interval,
 372                        refresh_interval*1000);
 373                 printf("//-->\n</script>\n");
 374         }
 375 }