request/request_fasttrack.c

   1 #include <stdio.h>
   2 #include <string.h>
   3 #include "../core/schedule.h"
   4 #include "../irc/irc.h"
   5 #include "../lib/irc_string.h"
   6 #include "request_fasttrack.h"
   7
   8 typedef struct rq_fasttrack {
   9   unsigned long userid;
  10
  11   unsigned int targets;
  12   time_t refill_time;
  13
  14   struct rq_fasttrack *next;
  15 } rq_fasttrack;
  16
  17 static rq_fasttrack *ftlist;
  18
  19 /* our fast-track extension */
  20 int rqnext;
  21
  22 static void rq_cleanup_fasttrack(void *arg);
  23 static void rqhook_account(int hook, void *arg);
  24
  25 int rq_initfasttrack(void) {
  26   rqnext = registernickext("request_fasttrack");
  27   if(rqnext < 0)
  28     return 0;
  29
  30   registerhook(HOOK_NICK_NEWNICK, &rqhook_account);
  31   registerhook(HOOK_NICK_ACCOUNT, &rqhook_account);
  32
  33   schedulerecurring(time(NULL)+1, 0, 3600, rq_cleanup_fasttrack, NULL);
  34
  35   return 1;
  36 }
  37
  38 void rq_finifasttrack(void) {
  39   rq_fasttrack *ft, *next;
  40
  41   deregisterhook(HOOK_NICK_NEWNICK, &rqhook_account);
  42   deregisterhook(HOOK_NICK_ACCOUNT, &rqhook_account);
  43
  44   for(ft=ftlist;ft;) {
  45     next = ft->next;
  46     free(ft);
  47     ft = next;
  48   }
  49
  50   releasenickext(rqnext);
  51 }
  52
  53 static void rqhook_account(int hook, void *arg) {
  54   nick *np = (nick *)arg;
  55   rq_fasttrack *ft;
  56
  57   /* Auth might be null for the newnick hook. */
  58   if(!np->auth)
  59     return;
  60
  61   /* Try to find an existing fasttrack record for this user. */
  62   for(ft=ftlist;ft;ft=ft->next) {
  63     if(np->auth->userid==ft->userid) {
  64       np->exts[rqnext] = ft;
  65       break;
  66     }
  67   }
  68 }
  69
  70 static void rq_cleanup_fasttrack(void *arg) {
  71   time_t now = getnettime();
  72   rq_fasttrack **pft, *ft;
  73   int j;
  74   nick *tnp;
  75
  76   now = getnettime();
  77
  78   pft = &ftlist;
  79
  80   for(ft=*pft;pft && *pft;pft=&((*pft)->next)) {
  81     int foundnick = 0;
  82
  83     for(j=0;j<NICKHASHSIZE && !foundnick;j++) {
  84       for(tnp=nicktable[j];tnp;tnp=tnp->next) {
  85         if(tnp->exts[rqnext]==ft) {
  86           foundnick = 1;
  87           break;
  88         }
  89       }
  90     }
  91
  92     if(ft->refill_time < now) {
  93       *pft = ft->next;
  94       free(ft);
  95     }
  96   }
  97 }
  98
  99 static rq_fasttrack *rq_getfasttrack(nick *np) {
 100   rq_fasttrack *ft;
 101
 102   /* Use an existing fast-track record if the nick has one. */
 103   if(np->exts[rqnext])
 104     return np->exts[rqnext];
 105
 106   if(!np->auth)
 107     return NULL;
 108
 109   ft = malloc(sizeof(rq_fasttrack));
 110
 111   if(!ft)
 112     return NULL;
 113
 114   ft->userid = np->auth->userid;
 115   ft->targets = 0;
 116   ft->refill_time = 0;
 117
 118   ft->next = ftlist;
 119   ftlist = ft;
 120
 121   np->exts[rqnext] = ft;
 122
 123   return ft;
 124 }
 125
 126 int rq_tryfasttrack(nick *np) {
 127   rq_fasttrack *ft = rq_getfasttrack(np);
 128
 129   /* Don't fast-track if we can't find a fast-track record. */
 130   if(!ft)
 131     return 0;
 132
 133   /* Refill targets if necessary. */
 134   if(getnettime() > ft->refill_time) {
 135     ft->targets = RQ_FASTTRACK_TARGETS;
 136     ft->refill_time = getnettime() + RQ_FASTTRACK_TIMEOUT;
 137   }
 138
 139   /* Check if we have a free target. */
 140   if(ft->targets==0)
 141     return 0;
 142
 143   ft->targets--;
 144   return 1;
 145 }
 146