mdw@git.distorted.org.uk Git - secnet/blob - comm-common.c

   1
   2 #include "secnet.h"
   3 #include "comm-common.h"
   4
   5 void comm_request_notify(void *commst, void *nst, comm_notify_fn *fn)
   6 {
   7     struct commcommon *st=commst;
   8     struct comm_notify_entry *n;
   9
  10     NEW(n);
  11     n->fn=fn;
  12     n->state=nst;
  13     LIST_INSERT_HEAD(&st->notify, n, entry);
  14 }
  15
  16 void comm_release_notify(void *commst, void *nst, comm_notify_fn *fn)
  17 {
  18     struct commcommon *st=commst;
  19     struct comm_notify_entry *n, *t;
  20
  21     /* XXX untested */
  22     LIST_FOREACH_SAFE(n, &st->notify, entry, t) {
  23        if (n->state==nst && n->fn==fn) {
  24            LIST_REMOVE(n, entry);
  25            free(n);
  26        }
  27     }
  28 }
  29
  30 bool_t comm_notify(struct comm_notify_list *notify,
  31                    struct buffer_if *buf, const struct comm_addr *ca)
  32 {
  33     struct comm_notify_entry *n;
  34
  35     LIST_FOREACH(n, notify, entry) {
  36         if (n->fn(n->state, buf, ca)) {
  37             return True;
  38         }
  39     }
  40     return False;
  41 }
  42
  43 void comm_apply(struct commcommon *cc, void *st)
  44 {
  45     assert(cc==st);
  46     cc->cl.type=CL_COMM;
  47     cc->cl.apply=NULL;
  48     cc->cl.interface=&cc->ops;
  49     cc->ops.st=cc;
  50     cc->ops.request_notify=comm_request_notify;
  51     cc->ops.release_notify=comm_release_notify;
  52     LIST_INIT(&cc->notify);
  53     cc->rbuf=NULL;
  54 }