citadel/modules/rwho/serv_rwho.c

   1 /*
   2  * $Id$
   3  *
   4  * This module implements server commands related to the display and
   5  * manipulation of the "Who's online" list.
   6  *
   7  */
   8
   9 #include "sysdep.h"
  10 #include <stdlib.h>
  11 #include <unistd.h>
  12 #include <stdio.h>
  13 #include <fcntl.h>
  14 #include <signal.h>
  15 #include <pwd.h>
  16 #include <errno.h>
  17 #include <sys/types.h>
  18
  19 #if TIME_WITH_SYS_TIME
  20 # include <sys/time.h>
  21 # include <time.h>
  22 #else
  23 # if HAVE_SYS_TIME_H
  24 #  include <sys/time.h>
  25 # else
  26 #  include <time.h>
  27 # endif
  28 #endif
  29
  30 #include <sys/wait.h>
  31 #include <string.h>
  32 #include <limits.h>
  33 #include <libcitadel.h>
  34 #include "citadel.h"
  35 #include "server.h"
  36 #include "citserver.h"
  37 #include "support.h"
  38 #include "config.h"
  39 #include "control.h"
  40 #include "room_ops.h"
  41 #include "user_ops.h"
  42 #include "policy.h"
  43 #include "database.h"
  44 #include "msgbase.h"
  45
  46
  47 #include "ctdl_module.h"
  48
  49
  50 /*
  51  * display who's online
  52  */
  53 void cmd_rwho(char *argbuf) {
  54         struct CitContext *nptr;
  55         int nContexts, i;
  56         int spoofed = 0;
  57         int user_spoofed = 0;
  58         int room_spoofed = 0;
  59         int host_spoofed = 0;
  60         int aide;
  61         char un[40];
  62         char real_room[ROOMNAMELEN], room[ROOMNAMELEN];
  63         char host[64], flags[5];
  64
  65         /* So that we don't keep the context list locked for a long time
  66          * we create a copy of it first
  67          */
  68
  69
  70         nptr = CtdlGetContextArray(&nContexts) ;
  71         if (!nptr)
  72         {
  73                 /* Couldn't malloc so we have to bail but stick to the protocol */
  74                 cprintf("%d%c \n", LISTING_FOLLOWS, CtdlCheckExpress() );
  75                 cprintf("000\n");
  76                 return;
  77         }
  78
  79         aide = CC->user.axlevel >= 6;
  80         cprintf("%d%c \n", LISTING_FOLLOWS, CtdlCheckExpress() );
  81
  82         for (i=0; i<nContexts; i++)
  83         {
  84                 flags[0] = '\0';
  85                 spoofed = 0;
  86                 user_spoofed = 0;
  87                 room_spoofed = 0;
  88                 host_spoofed = 0;
  89
  90                 if (nptr[i].cs_flags & CS_POSTING)
  91                    strcat(flags, "*");
  92                 else
  93                    strcat(flags, ".");
  94
  95                 if (nptr[i].fake_username[0])
  96                 {
  97                    strcpy(un, nptr[i].fake_username);
  98                    spoofed = 1;
  99                    user_spoofed = 1;
 100                 }
 101                 else
 102                    strcpy(un, nptr[i].curr_user);
 103
 104                 if (nptr[i].fake_hostname[0])
 105                 {
 106                    strcpy(host, nptr[i].fake_hostname);
 107                    spoofed = 1;
 108                    host_spoofed = 1;
 109                 }
 110                 else
 111                    strcpy(host, nptr[i].cs_host);
 112
 113                 GenerateRoomDisplay(real_room, &nptr[i], CC);
 114
 115                 if (nptr[i].fake_roomname[0]) {
 116                         strcpy(room, nptr[i].fake_roomname);
 117                         spoofed = 1;
 118                         room_spoofed = 1;
 119                 }
 120                 else {
 121                         strcpy(room, real_room);
 122                 }
 123
 124                 if ((aide) && (spoofed)) {
 125                         strcat(flags, "+");
 126                 }
 127
 128                 if ((nptr[i].cs_flags & CS_STEALTH) && (aide)) {
 129                         strcat(flags, "-");
 130                 }
 131
 132                 if (((nptr[i].cs_flags&CS_STEALTH)==0) || (aide))
 133                 {
 134                         cprintf("%d|%s|%s|%s|%s|%ld|%s|%s|",
 135                                 nptr[i].cs_pid, un, room,
 136                                 host, nptr[i].cs_clientname,
 137                                 (long)(nptr[i].lastidle),
 138                                 nptr[i].lastcmdname, flags
 139                         );
 140
 141                         if ((user_spoofed) && (aide)) {
 142                                 cprintf("%s|", nptr[i].curr_user);
 143                         }
 144                         else {
 145                                 cprintf("|");
 146                         }
 147
 148                         if ((room_spoofed) && (aide)) {
 149                                 cprintf("%s|", real_room);
 150                         }
 151                         else {
 152                                 cprintf("|");
 153                         }
 154
 155                         if ((host_spoofed) && (aide)) {
 156                                 cprintf("%s|", nptr[i].cs_host);
 157                         }
 158                         else {
 159                                 cprintf("|");
 160                         }
 161
 162                         cprintf("%d\n", nptr[i].logged_in);
 163                 }
 164         }
 165
 166         /* release out copy of the context list */
 167         free(nptr);
 168
 169         /* Now it's magic time.  Before we finish, call any EVT_RWHO hooks
 170          * so that external paging modules such as serv_icq can add more
 171          * content to the Wholist.
 172          */
 173         PerformSessionHooks(EVT_RWHO);
 174         cprintf("000\n");
 175 }
 176
 177
 178 /*
 179  * Masquerade roomname
 180  */
 181 void cmd_rchg(char *argbuf)
 182 {
 183         char newroomname[ROOMNAMELEN];
 184
 185         extract_token(newroomname, argbuf, 0, '|', sizeof newroomname);
 186         newroomname[ROOMNAMELEN-1] = 0;
 187         if (!IsEmptyStr(newroomname)) {
 188                 safestrncpy(CC->fake_roomname, newroomname,
 189                         sizeof(CC->fake_roomname) );
 190         }
 191         else {
 192                 safestrncpy(CC->fake_roomname, "", sizeof CC->fake_roomname);
 193         }
 194         cprintf("%d OK\n", CIT_OK);
 195 }
 196
 197 /*
 198  * Masquerade hostname
 199  */
 200 void cmd_hchg(char *argbuf)
 201 {
 202         char newhostname[64];
 203
 204         extract_token(newhostname, argbuf, 0, '|', sizeof newhostname);
 205         if (!IsEmptyStr(newhostname)) {
 206                 safestrncpy(CC->fake_hostname, newhostname,
 207                         sizeof(CC->fake_hostname) );
 208         }
 209         else {
 210                 safestrncpy(CC->fake_hostname, "", sizeof CC->fake_hostname);
 211         }
 212         cprintf("%d OK\n", CIT_OK);
 213 }
 214
 215
 216 /*
 217  * Masquerade username (aides only)
 218  */
 219 void cmd_uchg(char *argbuf)
 220 {
 221
 222         char newusername[USERNAME_SIZE];
 223
 224         extract_token(newusername, argbuf, 0, '|', sizeof newusername);
 225
 226         if (CtdlAccessCheck(ac_aide)) return;
 227
 228         if (!IsEmptyStr(newusername)) {
 229                 CC->cs_flags &= ~CS_STEALTH;
 230                 memset(CC->fake_username, 0, 32);
 231                 if (strncasecmp(newusername, CC->curr_user,
 232                                 strlen(CC->curr_user)))
 233                         safestrncpy(CC->fake_username, newusername,
 234                                 sizeof(CC->fake_username));
 235         }
 236         else {
 237                 CC->fake_username[0] = '\0';
 238                 CC->cs_flags |= CS_STEALTH;
 239         }
 240         cprintf("%d\n",CIT_OK);
 241 }
 242
 243
 244
 245
 246 /*
 247  * enter or exit "stealth mode"
 248  */
 249 void cmd_stel(char *cmdbuf)
 250 {
 251         int requested_mode;
 252
 253         requested_mode = extract_int(cmdbuf,0);
 254
 255         if (CtdlAccessCheck(ac_logged_in)) return;
 256
 257         if (requested_mode == 1) {
 258                 CC->cs_flags = CC->cs_flags | CS_STEALTH;
 259                 PerformSessionHooks(EVT_STEALTH);
 260         }
 261         if (requested_mode == 0) {
 262                 CC->cs_flags = CC->cs_flags & ~CS_STEALTH;
 263                 PerformSessionHooks(EVT_UNSTEALTH);
 264         }
 265
 266         cprintf("%d %d\n", CIT_OK,
 267                 ((CC->cs_flags & CS_STEALTH) ? 1 : 0) );
 268 }
 269
 270
 271 CTDL_MODULE_INIT(rwho)
 272 {
 273         if(!threading)
 274         {
 275                 CtdlRegisterProtoHook(cmd_rwho, "RWHO", "Display who is online");
 276                 CtdlRegisterProtoHook(cmd_hchg, "HCHG", "Masquerade hostname");
 277                 CtdlRegisterProtoHook(cmd_rchg, "RCHG", "Masquerade roomname");
 278                 CtdlRegisterProtoHook(cmd_uchg, "UCHG", "Masquerade username");
 279                 CtdlRegisterProtoHook(cmd_stel, "STEL", "Enter/exit stealth mode");
 280         }
 281
 282         /* return our Subversion id for the Log */
 283         return "$Id$";
 284 }