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a5db3e49 MT |
1 | /* |
2 | libloc - A library to determine the location of someone on the Internet | |
3 | ||
4 | Copyright (C) 2017 IPFire Development Team <info@ipfire.org> | |
5 | ||
6 | This library is free software; you can redistribute it and/or | |
7 | modify it under the terms of the GNU Lesser General Public | |
8 | License as published by the Free Software Foundation; either | |
9 | version 2.1 of the License, or (at your option) any later version. | |
10 | ||
11 | This library is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | Lesser General Public License for more details. | |
15 | */ | |
16 | ||
17 | #include <arpa/inet.h> | |
18 | #include <errno.h> | |
19 | #include <stdint.h> | |
20 | #include <stdlib.h> | |
21 | ||
22 | #include <loc/libloc.h> | |
9fc7f001 | 23 | #include <loc/as.h> |
a5db3e49 | 24 | #include <loc/format.h> |
9fc7f001 MT |
25 | #include <loc/private.h> |
26 | #include <loc/stringpool.h> | |
a5db3e49 MT |
27 | |
28 | struct loc_as { | |
29 | struct loc_ctx* ctx; | |
30 | int refcount; | |
31 | ||
32 | struct loc_stringpool* pool; | |
33 | ||
34 | uint32_t number; | |
35 | off_t name; | |
36 | }; | |
37 | ||
38 | LOC_EXPORT int loc_as_new(struct loc_ctx* ctx, struct loc_stringpool* pool, struct loc_as** as, uint32_t number) { | |
39 | struct loc_as* a = calloc(1, sizeof(*a)); | |
40 | if (!a) | |
41 | return -ENOMEM; | |
42 | ||
43 | a->ctx = loc_ref(ctx); | |
44 | a->refcount = 1; | |
45 | a->pool = loc_stringpool_ref(pool); | |
46 | ||
47 | a->number = number; | |
48 | ||
49 | DEBUG(a->ctx, "AS%u allocated at %p\n", a->number, a); | |
50 | *as = a; | |
51 | ||
52 | return 0; | |
53 | } | |
54 | ||
55 | LOC_EXPORT struct loc_as* loc_as_ref(struct loc_as* as) { | |
56 | as->refcount++; | |
57 | ||
58 | return as; | |
59 | } | |
60 | ||
61 | static void loc_as_free(struct loc_as* as) { | |
62 | DEBUG(as->ctx, "Releasing AS%u %p\n", as->number, as); | |
63 | ||
64 | loc_stringpool_unref(as->pool); | |
65 | loc_unref(as->ctx); | |
66 | ||
67 | free(as); | |
68 | } | |
69 | ||
70 | LOC_EXPORT struct loc_as* loc_as_unref(struct loc_as* as) { | |
71 | if (--as->refcount > 0) | |
72 | return NULL; | |
73 | ||
74 | loc_as_free(as); | |
75 | ||
76 | return NULL; | |
77 | } | |
78 | ||
79 | LOC_EXPORT uint32_t loc_as_get_number(struct loc_as* as) { | |
80 | return as->number; | |
81 | } | |
82 | ||
83 | LOC_EXPORT const char* loc_as_get_name(struct loc_as* as) { | |
84 | return loc_stringpool_get(as->pool, as->name); | |
85 | } | |
86 | ||
87 | LOC_EXPORT int loc_as_set_name(struct loc_as* as, const char* name) { | |
88 | // Add the string to the string pool | |
89 | off_t offset = loc_stringpool_add(as->pool, name); | |
90 | if (offset < 0) | |
91 | return offset; | |
92 | ||
93 | as->name = offset; | |
94 | return 0; | |
95 | } | |
96 | ||
97 | LOC_EXPORT int loc_as_cmp(struct loc_as* as1, struct loc_as* as2) { | |
98 | if (as1->number > as2->number) | |
99 | return 1; | |
100 | ||
101 | if (as1->number < as2->number) | |
102 | return -1; | |
103 | ||
104 | return 0; | |
105 | } | |
106 | ||
107 | int loc_as_new_from_database_v0(struct loc_ctx* ctx, struct loc_stringpool* pool, | |
108 | struct loc_as** as, const struct loc_database_as_v0* dbobj) { | |
109 | uint32_t number = ntohl(dbobj->number); | |
110 | ||
111 | int r = loc_as_new(ctx, pool, as, number); | |
112 | if (r) | |
113 | return r; | |
114 | ||
115 | (*as)->name = ntohl(dbobj->name); | |
116 | ||
117 | return 0; | |
118 | } | |
119 | ||
120 | int loc_as_to_database_v0(struct loc_as* as, struct loc_database_as_v0* dbobj) { | |
121 | dbobj->number = htonl(as->number); | |
122 | dbobj->name = htonl(as->name); | |
123 | ||
124 | return 0; | |
125 | } |