src/privilege.c

   1 /*
   2  * charybdis: an advanced ircd.
   3  * privilege.c: Dynamic privileges API.
   4  *
   5  * Copyright (c) 2008 William Pitcock <nenolod@dereferenced.org>
   6  *
   7  * Permission to use, copy, modify, and/or distribute this software for any
   8  * purpose with or without fee is hereby granted, provided that the above
   9  * copyright notice and this permission notice is present in all copies.
  10  *
  11  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  12  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  13  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
  14  * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
  15  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  16  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  17  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  18  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  19  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
  20  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  21  * POSSIBILITY OF SUCH DAMAGE.
  22  */
  23
  24 #include <stdinc.h>
  25 #include "privilege.h"
  26
  27 static rb_dlink_list privilegeset_list = {};
  28
  29 int
  30 privilegeset_in_set(struct PrivilegeSet *set, const char *priv)
  31 {
  32         s_assert(set != NULL);
  33         s_assert(priv != NULL);
  34
  35         return strstr(set->privs, priv) != NULL;
  36 }
  37
  38 struct PrivilegeSet *
  39 privilegeset_set_new(const char *name, const char *privs, PrivilegeFlags flags)
  40 {
  41         struct PrivilegeSet *set;
  42
  43         set = rb_malloc(sizeof(struct PrivilegeSet));
  44         set->refs = 1;
  45         set->name = rb_strdup(name);
  46         set->privs = rb_strdup(privs);
  47         set->flags = flags;
  48
  49         rb_dlinkAdd(set, &set->node, &privilegeset_list);
  50
  51         return set;
  52 }
  53
  54 struct PrivilegeSet *
  55 privilegeset_get(const char *name)
  56 {
  57         rb_dlink_node *iter;
  58
  59         s_assert(name != NULL);
  60
  61         RB_DLINK_FOREACH(iter, privilegeset_list.head)
  62         {
  63                 struct PrivilegeSet *set = (struct PrivilegeSet *) iter->data;
  64
  65                 if (!strcasecmp(set->name, name))
  66                         return set;
  67         }
  68
  69         return NULL;
  70 }
  71
  72 void
  73 privilegeset_ref(struct PrivilegeSet *set)
  74 {
  75         s_assert(set != NULL);
  76
  77         set->refs++;
  78 }
  79
  80 void
  81 privilegeset_unref(struct PrivilegeSet *set)
  82 {
  83         s_assert(set != NULL);
  84
  85         if (--set->refs == 0)
  86         {
  87                 rb_dlinkDelete(&set->node, &privilegeset_list);
  88
  89                 rb_free(set->name);
  90                 rb_free(set->privs);
  91                 rb_free(set);
  92         }
  93 }