whowas/whowas.c

   1 #include <stdio.h>
   2 #include <string.h>
   3 #include "../core/hooks.h"
   4 #include "../control/control.h"
   5 #include "../irc/irc.h"
   6 #include "../lib/irc_string.h"
   7 #include "whowas.h"
   8
   9 static whowas *wwhead, *wwtail;
  10 static int wwcount;
  11
  12 int ww_cmdwhowas(void *source, int cargc, char **cargv) {
  13   nick *np = source;
  14   char *pattern;
  15   whowas *ww;
  16   char hostmask[WW_MASKLEN+1];
  17   char timebuf[30];
  18   int matches = 0, limit = 500;
  19
  20   if(cargc<1)
  21     return CMD_USAGE;
  22
  23   pattern = cargv[0];
  24
  25   if(cargc>1)
  26     limit = strtol(cargv[1], NULL, 10);
  27
  28   for(ww=wwhead;ww;ww=ww->next) {
  29     snprintf(hostmask, sizeof(hostmask), "%s!%s@%s", ww->nick, ww->ident, ww->host);
  30
  31     if (match2strings(pattern, hostmask)) {
  32       matches++;
  33
  34       if(matches<=limit) {
  35         strftime(timebuf, 30, "%d/%m/%y %H:%M:%S", localtime(&(ww->seen)));
  36
  37         controlreply(np, "[%s] %s (%s): %s", timebuf, hostmask, ww->realname, ww->reason->content);
  38       } else if(matches==limit+1) {
  39         controlreply(np, "--- More than %d matches, skipping the rest", limit);
  40       }
  41     }
  42   }
  43
  44   controlreply(np, "--- Found %d entries.", matches);
  45
  46   return CMD_OK;
  47 }
  48
  49 void ww_handlequitorkill(int hooknum, void *arg) {
  50   void **args=arg;
  51   nick *np=args[0];
  52   char *reason=args[1];
  53   char *rreason;
  54   char resbuf[512];
  55   whowas *ww;
  56   time_t now;
  57
  58   time(&now);
  59
  60   /* Clean up old records. */
  61   while((ww = wwtail) && (ww->seen < now - WW_MAXAGE || wwcount >= WW_MAXENTRIES)) {
  62     wwtail = ww->prev;
  63
  64     if (ww->prev)
  65       ww->prev->next = NULL;
  66     else
  67       wwhead = ww->prev;
  68
  69     wwcount--;
  70     free(ww);
  71   }
  72
  73   /* Create a new record. */
  74   ww = malloc(sizeof(whowas));
  75   strncpy(ww->nick, np->nick, NICKLEN);
  76   strncpy(ww->ident, np->ident, USERLEN);
  77   strncpy(ww->host, np->host->name->content, HOSTLEN);
  78   strncpy(ww->realname, np->realname->name->content, REALLEN);
  79   ww->seen = getnettime();
  80
  81   if(hooknum==HOOK_NICK_KILL && (rreason=strchr(reason,' '))) {
  82     sprintf(resbuf,"Killed%s",rreason);
  83     reason=resbuf;
  84   }
  85
  86   ww->reason = getsstring(reason, WW_REASONLEN);
  87
  88   if(wwhead)
  89     wwhead->prev = ww;
  90
  91   ww->next = wwhead;
  92   wwhead = ww;
  93
  94   ww->prev = NULL;
  95
  96   if(!wwtail)
  97     wwtail = ww;
  98
  99   wwcount++;
 100 }
 101
 102 void _init(void) {
 103   registerhook(HOOK_NICK_QUIT, ww_handlequitorkill);
 104   registerhook(HOOK_NICK_KILL, ww_handlequitorkill);
 105
 106   registercontrolhelpcmd("whowas", NO_OPER, 2, &ww_cmdwhowas, "Usage: whowas <mask> ?limit?\nLooks up information about recently disconnected users.");
 107 }
 108
 109 void _fini(void) {
 110   whowas *ww;
 111
 112   deregisterhook(HOOK_NICK_QUIT, ww_handlequitorkill);
 113   deregisterhook(HOOK_NICK_KILL, ww_handlequitorkill);
 114
 115   deregistercontrolcmd("whowas", &ww_cmdwhowas);
 116
 117   while((ww = wwhead)) {
 118     wwhead = ww->next;
 119     free(ww);
 120   }
 121 }