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

   1 /*
   2  * This file is part of secnet.
   3  * See README for full list of copyright holders.
   4  *
   5  * secnet is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version d of the License, or
   8  * (at your option) any later version.
   9  *
  10  * secnet is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * version 3 along with secnet; if not, see
  17  * https://www.gnu.org/licenses/gpl.html.
  18  */
  19
  20 #include "secnet.h"
  21 #include "comm-common.h"
  22
  23 struct comm_clientinfo *comm_clientinfo_ignore(void *state, dict_t *dict,
  24                                                struct cloc cloc)
  25 {
  26     return 0;
  27 }
  28
  29 void comm_request_notify(void *commst, void *nst, comm_notify_fn *fn)
  30 {
  31     struct commcommon *st=commst;
  32     struct comm_notify_entry *n;
  33
  34     NEW(n);
  35     n->fn=fn;
  36     n->state=nst;
  37     LIST_INSERT_HEAD(&st->notify, n, entry);
  38 }
  39
  40 void comm_release_notify(void *commst, void *nst, comm_notify_fn *fn)
  41 {
  42     struct commcommon *st=commst;
  43     struct comm_notify_entry *n, *t;
  44
  45     /* XXX untested */
  46     LIST_FOREACH_SAFE(n, &st->notify, entry, t) {
  47        if (n->state==nst && n->fn==fn) {
  48            LIST_REMOVE(n, entry);
  49            free(n);
  50        }
  51     }
  52 }
  53
  54 bool_t comm_notify(struct comm_notify_list *notify,
  55                    struct buffer_if *buf, const struct comm_addr *ca)
  56 {
  57     struct comm_notify_entry *n;
  58
  59     LIST_FOREACH(n, notify, entry) {
  60         if (n->fn(n->state, buf, ca)) {
  61             return True;
  62         }
  63     }
  64     return False;
  65 }
  66
  67 void comm_apply(struct commcommon *cc, void *st)
  68 {
  69     assert(cc==st);
  70     cc->cl.type=CL_COMM;
  71     cc->cl.apply=NULL;
  72     cc->cl.interface=&cc->ops;
  73     cc->ops.st=cc;
  74     cc->ops.request_notify=comm_request_notify;
  75     cc->ops.release_notify=comm_release_notify;
  76     LIST_INIT(&cc->notify);
  77     cc->rbuf=NULL;
  78 }