miscreply/trace.c

   1 /* trace.c */
   2
   3 #include "miscreply.h"
   4 #include "numeric.h"
   5 #include "../core/error.h"
   6 #include "../irc/irc.h"
   7 #include "../lib/irc_string.h"
   8 #include "../nick/nick.h"
   9 #include "../server/server.h"
  10
  11 #include <string.h>
  12
  13
  14
  15 /* TODO: make server module keep state of link TS ? */
  16 /* TODO: make trace_server and trace_user function */
  17 /* TODO: trace link,
  18  * loop back from target server til we find ourself, send trace links along the way
  19  */
  20
  21 /* handle remote trace request
  22  *
  23  * <source numeric> TRACE/TR <target> <target server numeric>
  24  *
  25  * cargv[0] = target
  26  *            as given by source, can be a nick or a server (may contain wildcards)
  27  * cargv[1] = target server numeric
  28  *
  29  */
  30 int handletracemsg(void *source, int cargc, char **cargv) {
  31
  32   nick *snick;                           /* struct nick for source nick */
  33   nick *tnick;                           /* struct nick for target nick */
  34   nick **lnick;                          /* struct nick for looping local users */
  35
  36   int i;                                 /* index for serverlist[] */
  37   int showall = 0;                       /* show all local server links */
  38   int opers = 0;                         /* number of opers */
  39   int users = 0;                         /* number of users */
  40   int servers = 0;                       /* number of servers */
  41   char *sourcenum = (char *)source;      /* source user numeric */
  42   char *targetnum = getmynumeric();      /* target server numeric */
  43   char *target;                          /* target parameter - as given by the source user */
  44   char *servernum;                       /* destination server numeric parameter */
  45
  46   /* check parameters */
  47   if (cargc < 2) {
  48     miscreply_needmoreparams(sourcenum, "TRACE");
  49     return CMD_OK;
  50   }
  51
  52   /* get the parameters */
  53   target = cargv[0];
  54   servernum = cargv[1];
  55
  56   /* from a server? */
  57   if (IsServer(sourcenum))
  58     return CMD_OK;
  59
  60   /* find source user */
  61   if (!(snick = miscreply_finduser(sourcenum, "TRACE")))
  62     return CMD_OK;
  63
  64   /* TODO: trace here down to target server first? */
  65
  66   /* for me */
  67   if (IsMeNum(servernum)) {
  68
  69     /* find target user */
  70     if ((tnick = getnickbynick(target))) {
  71
  72       /* my user? */
  73       if (MyUser(tnick)) {
  74         if (IsOper(tnick)) {
  75           /*
  76            * 204 RPL_TRACEOPERATOR "source 204 target Oper class nick[user@IP] last_parse"
  77            *                       "irc.netsplit.net 204 foobar Oper barfoo[fish@127.0.0.1] 0"
  78            *
  79            *  note: no info available on how long ago we last parsed something from this user -> 0 (not idle time)
  80            */
  81           send_reply(targetnum, RPL_TRACEOPERATOR, sourcenum, "Oper opers %s[%s@%s] 0", tnick->nick,
  82             tnick->ident[0] != '~' ? tnick->ident : "", IPtostr(tnick->p_ipaddr));
  83         } else {
  84           /*
  85            * 205 RPL_TRACEUSER "source 205 target User class nick[user@IP] last_parse"
  86            *                   "irc.netsplit.net 205 foobar User barfoo[fish@127.0.0.1] 0"
  87            */
  88           send_reply(targetnum, RPL_TRACEUSER, sourcenum, "User users %s[%s@%s] 0", tnick->nick,
  89             tnick->ident[0] != '~' ? tnick->ident : "", IPtostr(tnick->p_ipaddr));
  90         }
  91       }
  92     }
  93     else {
  94
  95       /* target is my server,
  96        *   show all local server links
  97        */
  98       if (match2strings(target, myserver->content))
  99         showall = 1;
 100
 101       /* go over all servers */
 102       for (i = 0; i < MAXSERVERS; i++) {
 103         if (serverlist[i].maxusernum == 0)   /* not linked */
 104           continue;
 105         if (!IsMeLong(serverlist[i].parent) && i != myhub)   /* not my server and not my hub */
 106           continue;
 107         servers++;
 108         if (!showall && !match2strings(target, serverlist[i].name->content))   /* do not show all and no match */
 109           continue;
 110         /*
 111          * 206 RPL_TRACESERVER "source 206 target Serv class NS NC server connected_by last_parse connected_for"
 112          *                     "irc.netsplit.net 206 foobar Server 2S 6C irc.netsplit.net *!user@host 34 92988"
 113          *
 114          *  note: no info available on how many servers or clients are linked through this server link -> 0S 0C
 115          *        no info available on who/what established the link, pretend it is by us -> *!*@myservername
 116          *        no info available on how long ago we last parsed something from this link -> 0
 117          *        no info available on how long this server has been linked -> 0
 118          */
 119         send_reply(targetnum, RPL_TRACESERVER, sourcenum, "Serv servers 0S 0C %s *!*@%s 0 0",
 120           serverlist[i].name->content, myserver->content);
 121       }
 122
 123       /* show my users, show class total */
 124       if (showall) {
 125
 126         /* loop over all local users */
 127         lnick = servernicks[mylongnum];
 128         for (i = 0; i < MAXLOCALUSER; i++) {
 129
 130           if (lnick[i] == NULL)   /* no user */
 131             continue;
 132
 133           if (!match2strings(target, lnick[i]->nick))   /* no match */
 134             continue;
 135
 136           if (IsOper(lnick[i])) {
 137             opers++;
 138             /* 204 RPL_TRACEOPERATOR see above */
 139             send_reply(targetnum, RPL_TRACEOPERATOR, sourcenum, "Oper opers %s[%s@%s] 0", lnick[i]->nick,
 140               lnick[i]->ident[0] != '~' ? lnick[i]->ident : "", IPtostr(lnick[i]->p_ipaddr));
 141           } else {
 142             users++;
 143             /* TODO: perhaps do show +k and/or +X clients? */
 144             /* ircd does not show all local users in remote trace - might be too many users with trojan scan / nickjupes? */
 145             continue;
 146             /* 205 RPL_TRACEUSER see above */
 147             send_reply(targetnum, RPL_TRACEUSER, sourcenum, "User users %s[%s@%s] 0", lnick[i]->nick,
 148               lnick[i]->ident[0] != '~' ? lnick[i]->ident : "", IPtostr(lnick[i]->p_ipaddr));
 149           }
 150         }
 151         /*
 152          * class has no meaning here,
 153          * but showing the total count for users/opers/servers might be useful anyway
 154          *
 155          * 209 RPL_TRACECLASS "source 209 target Class class count"
 156          *                    "irc.netsplit.net 209 foobar Class users 2"
 157          */
 158         if (users)
 159           send_reply(targetnum, RPL_TRACECLASS, sourcenum, "Class users %d", users);
 160         if (opers)
 161           send_reply(targetnum, RPL_TRACECLASS, sourcenum, "Class opers %d", opers);
 162         /* should always be true - we are connected so at least 1 local server link */
 163         if (servers)
 164           send_reply(targetnum, RPL_TRACECLASS, sourcenum, "Class servers %d", servers);
 165       }
 166     }
 167   }
 168
 169   /*
 170    * 262 RPL_TRACEEND "source 262 target :End of TRACE"
 171    *                  "irc.netsplit.net 262 foobar :End of TRACE"
 172    */
 173   send_reply(targetnum, RPL_TRACEEND, sourcenum, ":End of TRACE");
 174
 175   return CMD_OK;
 176 }