miscreply/trace.c

   1 /* trace.c */
   2
   3 #include "miscreply.h"
   4 #include "../core/error.h"
   5 #include "../irc/irc.h"
   6 #include "../lib/irc_string.h"
   7 #include "../server/server.h"
   8
   9 #include <string.h>
  10
  11
  12
  13 /* trace_user
  14  *
  15  */
  16 static void trace_user(char *sourcenum, nick *tnick) {
  17   if (IsOper(tnick)) {
  18     /*
  19      * 204 RPL_TRACEOPERATOR "source 204 target Oper class nick[user@IP] last_parse"
  20      *                       "irc.netsplit.net 204 foobar Oper barfoo[fish@127.0.0.1] 0"
  21      *
  22      *  note: no info available on how long ago we last parsed something from this user -> 0 (not idle time)
  23      */
  24     irc_send("%s 204 %s Oper opers %s[%s@%s] 0", getmynumeric(), sourcenum, tnick->nick,
  25       tnick->ident[0] != '~' ? tnick->ident : "", IPtostr(tnick->ipaddress));
  26   } else {
  27     /*
  28      * 205 RPL_TRACEUSER "source 205 target User class nick[user@IP] last_parse"
  29      *                   "irc.netsplit.net 205 foobar User barfoo[fish@127.0.0.1] 0"
  30      */
  31     irc_send("%s 205 %s User users %s[%s@%s] 0", getmynumeric(), sourcenum, tnick->nick,
  32       tnick->ident[0] != '~' ? tnick->ident : "", IPtostr(tnick->ipaddress));
  33   }
  34 }
  35
  36
  37
  38 /* trace_server
  39  *   return number of matched servers
  40  */
  41 static int trace_server(char *sourcenum, char *target, int doall) {
  42
  43   /* do not show all and no match for my hub */
  44   if (!doall && !match2strings(target, serverlist[myhub].name->content))
  45     return 0;
  46
  47   /*
  48    * 206 RPL_TRACESERVER "source 206 target Serv class NS NC server connected_by last_parse connected_for"
  49    *                     "irc.netsplit.net 206 foobar Server 2S 6C irc.netsplit.net *!user@host 34 92988"
  50    *
  51    *  note: no info available on how many servers or clients are linked through this server link -> 0S 0C
  52    *        no info available on who/what established the link, pretend it is by us -> *!*@myservername
  53    *        no info available on how long ago we last parsed something from this link -> 0
  54    *        no info available on how long this server has been linked -> 0
  55    */
  56   irc_send("%s 206 %s Serv servers 0S 0C %s *!*@%s 0 0", getmynumeric(), sourcenum,
  57     serverlist[myhub].name->content, myserver->content);
  58
  59   return 1;
  60 }
  61
  62
  63
  64 /* handle remote trace request
  65  *
  66  * <source numeric> TRACE/TR <target> <target server numeric>
  67  *
  68  * cargv[0] = target
  69  *            as given by source, can be a nick or a server (may contain wildcards)
  70  * cargv[1] = target server numeric
  71  *
  72  */
  73 int handletracemsg(void *source, int cargc, char **cargv) {
  74
  75   nick *snick;                        /* struct nick for source nick */
  76   nick *tnick;                        /* struct nick for target nick */
  77   nick **lnick;                       /* struct nick for looping local users */
  78   int c;                              /* loop variable */
  79   int opers = 0;                      /* number of operators */
  80   int users = 0;                      /* number of users */
  81   int servers = 0;                    /* number of servers */
  82   int doall, wilds, dow;              /* determine what to show */
  83   char *sourcenum = (char *)source;   /* source user numeric */
  84   char *target;                       /* target parameter - as given by the source user */
  85
  86
  87   /* check parameters */
  88   if (cargc < 2) {
  89     miscreply_needmoreparams(sourcenum, "TRACE");
  90     return CMD_OK;
  91   }
  92
  93   /* get the parameters */
  94   target = cargv[0];
  95
  96   /* find source user */
  97   if (!(snick = miscreply_finduser(sourcenum, "TRACE")))
  98     return CMD_OK;
  99
 100   /* doall, wilds, dow */
 101   doall = match2strings(target, myserver->content);
 102   wilds = strchr(target, '*') || strchr(target, '?');
 103   dow = wilds || doall;
 104
 105
 106   /* find target user */
 107   if ((tnick = getnickbynick(target))) {
 108
 109     /* my user */
 110     if (mylongnum == homeserver(tnick->numeric))
 111       trace_user(sourcenum, tnick);
 112   }
 113
 114
 115   /* source user is an operator */
 116   else if (IsOper(snick)) {
 117
 118     /* show servers */
 119     servers = trace_server(sourcenum, target, doall);
 120
 121     /* do all or wilds */
 122     if (dow) {
 123
 124       /* loop over all local users */
 125       lnick = servernicks[mylongnum];
 126       for (c = 0; c < serverlist[mylongnum].maxusernum; c++) {
 127
 128         if (lnick[c] == NULL)   /* no user */
 129           continue;
 130
 131         /* target is invisible (mode +i), target is not an operator */
 132         if (IsInvisible(lnick[c]) && dow && !IsOper(lnick[c]))
 133           continue;
 134
 135         /* dont show all, do wildcards and no match */
 136         if (!doall && wilds && !match2strings(target, lnick[c]->nick))
 137           continue;
 138
 139         if (IsOper(lnick[c]))
 140           opers++;
 141         else
 142           users++;
 143         trace_user(sourcenum, lnick[c]);
 144       }
 145       /*
 146        * class has no meaning here,
 147        * but showing the total count for users/opers/servers might be useful anyway
 148        *
 149        * 209 RPL_TRACECLASS "source 209 target Class class count"
 150        *                    "irc.netsplit.net 209 foobar Class users 2"
 151        */
 152       if (users)
 153         irc_send("%s 209 %s Class users %d", getmynumeric(), sourcenum, users);
 154       if (opers)
 155         irc_send("%s 209 %s Class opers %d", getmynumeric(), sourcenum, opers);
 156       if (servers)
 157         irc_send("%s 209 %s Class servers %d", getmynumeric(), sourcenum, servers);
 158     }
 159   }
 160
 161
 162   /*
 163    * 262 RPL_TRACEEND "source 262 target :End of TRACE"
 164    *                  "irc.netsplit.net 262 foobar :End of TRACE"
 165    */
 166   irc_send("%s 262 %s :End of TRACE", getmynumeric(), sourcenum);
 167
 168   return CMD_OK;
 169 }