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9c3f080b AC |
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 | ||
353f8625 AC |
43 | s_assert(privilegeset_get(name) == NULL); |
44 | ||
9c3f080b AC |
45 | set = rb_malloc(sizeof(struct PrivilegeSet)); |
46 | set->refs = 1; | |
47 | set->name = rb_strdup(name); | |
48 | set->privs = rb_strdup(privs); | |
49 | set->flags = flags; | |
50 | ||
51 | rb_dlinkAdd(set, &set->node, &privilegeset_list); | |
52 | ||
53 | return set; | |
54 | } | |
55 | ||
353f8625 AC |
56 | struct PrivilegeSet * |
57 | privilegeset_extend(struct PrivilegeSet *parent, const char *name, const char *privs, PrivilegeFlags flags) | |
58 | { | |
59 | struct PrivilegeSet *set; | |
60 | ||
61 | s_assert(parent != NULL); | |
62 | s_assert(name != NULL); | |
63 | s_assert(privs != NULL); | |
64 | s_assert(privilegeset_get(name) == NULL); | |
65 | ||
66 | set = rb_malloc(sizeof(struct PrivilegeSet)); | |
67 | set->refs = 1; | |
68 | set->name = rb_strdup(name); | |
69 | set->flags = flags; | |
70 | set->privs = rb_malloc(strlen(parent->privs) + 1 + strlen(privs) + 1); | |
76de8880 | 71 | strcpy(set->privs, parent->privs); |
353f8625 AC |
72 | strcat(set->privs, " "); |
73 | strcat(set->privs, privs); | |
74 | ||
f8095827 AC |
75 | rb_dlinkAdd(set, &set->node, &privilegeset_list); |
76 | ||
353f8625 AC |
77 | return set; |
78 | } | |
79 | ||
9c3f080b AC |
80 | struct PrivilegeSet * |
81 | privilegeset_get(const char *name) | |
82 | { | |
83 | rb_dlink_node *iter; | |
84 | ||
85 | s_assert(name != NULL); | |
86 | ||
87 | RB_DLINK_FOREACH(iter, privilegeset_list.head) | |
88 | { | |
89 | struct PrivilegeSet *set = (struct PrivilegeSet *) iter->data; | |
90 | ||
91 | if (!strcasecmp(set->name, name)) | |
92 | return set; | |
93 | } | |
94 | ||
95 | return NULL; | |
96 | } | |
97 | ||
598b4cf1 | 98 | struct PrivilegeSet * |
9c3f080b AC |
99 | privilegeset_ref(struct PrivilegeSet *set) |
100 | { | |
101 | s_assert(set != NULL); | |
102 | ||
103 | set->refs++; | |
598b4cf1 AC |
104 | |
105 | return set; | |
9c3f080b AC |
106 | } |
107 | ||
108 | void | |
109 | privilegeset_unref(struct PrivilegeSet *set) | |
110 | { | |
111 | s_assert(set != NULL); | |
112 | ||
113 | if (--set->refs == 0) | |
114 | { | |
115 | rb_dlinkDelete(&set->node, &privilegeset_list); | |
116 | ||
117 | rb_free(set->name); | |
118 | rb_free(set->privs); | |
119 | rb_free(set); | |
120 | } | |
121 | } |