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ec684c1a MT |
1 | /* |
2 | libloc - A library to determine the location of someone on the Internet | |
3 | ||
4 | Copyright (C) 2019 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 <errno.h> | |
18 | #include <stdlib.h> | |
19 | #include <string.h> | |
20 | ||
21 | #include <loc/libloc.h> | |
c2108435 | 22 | #include <loc/compat.h> |
ec684c1a MT |
23 | #include <loc/country.h> |
24 | #include <loc/private.h> | |
25 | ||
26 | struct loc_country { | |
27 | struct loc_ctx* ctx; | |
28 | int refcount; | |
29 | ||
30 | char* code; | |
31 | char* continent_code; | |
32 | ||
33 | char* name; | |
34 | }; | |
35 | ||
36 | LOC_EXPORT int loc_country_new(struct loc_ctx* ctx, struct loc_country** country, const char* country_code) { | |
37 | struct loc_country* c = calloc(1, sizeof(*c)); | |
38 | if (!c) | |
39 | return -ENOMEM; | |
40 | ||
41 | c->ctx = loc_ref(ctx); | |
42 | c->refcount = 1; | |
43 | ||
44 | c->code = strdup(country_code); | |
45 | ||
46 | DEBUG(c->ctx, "Country %s allocated at %p\n", c->code, c); | |
47 | *country = c; | |
48 | ||
49 | return 0; | |
50 | } | |
51 | ||
52 | LOC_EXPORT struct loc_country* loc_country_ref(struct loc_country* country) { | |
53 | country->refcount++; | |
54 | ||
55 | return country; | |
56 | } | |
57 | ||
58 | static void loc_country_free(struct loc_country* country) { | |
59 | DEBUG(country->ctx, "Releasing country %s %p\n", country->code, country); | |
60 | ||
61 | if (country->code) | |
62 | free(country->code); | |
63 | ||
64 | if (country->continent_code) | |
65 | free(country->continent_code); | |
66 | ||
67 | if (country->name) | |
68 | free(country->name); | |
69 | ||
70 | loc_unref(country->ctx); | |
71 | free(country); | |
72 | } | |
73 | ||
74 | LOC_EXPORT struct loc_country* loc_country_unref(struct loc_country* country) { | |
75 | if (--country->refcount > 0) | |
76 | return NULL; | |
77 | ||
78 | loc_country_free(country); | |
79 | ||
80 | return NULL; | |
81 | } | |
82 | ||
83 | LOC_EXPORT const char* loc_country_get_code(struct loc_country* country) { | |
84 | return country->code; | |
85 | } | |
86 | ||
87 | LOC_EXPORT const char* loc_country_get_continent_code(struct loc_country* country) { | |
88 | return country->continent_code; | |
89 | } | |
90 | ||
91 | LOC_EXPORT int loc_country_set_continent_code(struct loc_country* country, const char* continent_code) { | |
92 | // XXX validate input | |
93 | ||
94 | // Free previous value | |
95 | if (country->continent_code) | |
96 | free(country->continent_code); | |
97 | ||
98 | country->continent_code = strdup(continent_code); | |
99 | ||
100 | return 0; | |
101 | } | |
102 | ||
103 | LOC_EXPORT const char* loc_country_get_name(struct loc_country* country) { | |
104 | return country->name; | |
105 | } | |
106 | ||
107 | LOC_EXPORT int loc_country_set_name(struct loc_country* country, const char* name) { | |
108 | if (country->name) | |
109 | free(country->name); | |
110 | ||
111 | if (name) | |
112 | country->name = strdup(name); | |
113 | ||
114 | return 0; | |
115 | } | |
116 | ||
af208e26 | 117 | LOC_EXPORT int loc_country_cmp(struct loc_country* country1, struct loc_country* country2) { |
ec684c1a MT |
118 | return strcmp(country1->code, country2->code); |
119 | } | |
120 | ||
121 | int loc_country_new_from_database_v0(struct loc_ctx* ctx, struct loc_stringpool* pool, | |
122 | struct loc_country** country, const struct loc_database_country_v0* dbobj) { | |
123 | char buffer[3]; | |
124 | ||
125 | // Read country code | |
a7a3d958 | 126 | loc_country_code_copy(buffer, dbobj->code); |
ec684c1a MT |
127 | |
128 | // Create a new country object | |
129 | int r = loc_country_new(ctx, country, buffer); | |
130 | if (r) | |
131 | return r; | |
132 | ||
133 | // Continent Code | |
a7a3d958 | 134 | loc_country_code_copy(buffer, dbobj->continent_code); |
ec684c1a MT |
135 | |
136 | r = loc_country_set_continent_code(*country, buffer); | |
137 | if (r) | |
138 | goto FAIL; | |
139 | ||
140 | // Set name | |
ec684c1a MT |
141 | const char* name = loc_stringpool_get(pool, be32toh(dbobj->name)); |
142 | if (name) { | |
143 | r = loc_country_set_name(*country, name); | |
144 | if (r) | |
145 | goto FAIL; | |
146 | } | |
ec684c1a MT |
147 | |
148 | return 0; | |
149 | ||
150 | FAIL: | |
151 | loc_country_unref(*country); | |
152 | return r; | |
153 | } | |
154 | ||
155 | int loc_country_to_database_v0(struct loc_country* country, | |
156 | struct loc_stringpool* pool, struct loc_database_country_v0* dbobj) { | |
157 | // Add country code | |
158 | for (unsigned int i = 0; i < 2; i++) { | |
159 | dbobj->code[i] = country->code[i] ? country->code[i] : '\0'; | |
160 | } | |
161 | ||
162 | // Add continent code | |
d7c9d57b MT |
163 | if (country->continent_code) { |
164 | for (unsigned int i = 0; i < 2; i++) { | |
165 | dbobj->continent_code[i] = country->continent_code[i] ? country->continent_code[i] : '\0'; | |
166 | } | |
ec684c1a MT |
167 | } |
168 | ||
169 | // Save the name string in the string pool | |
170 | off_t name = loc_stringpool_add(pool, country->name ? country->name : ""); | |
171 | dbobj->name = htobe32(name); | |
172 | ||
173 | return 0; | |
174 | } | |
0f0829ef MT |
175 | |
176 | LOC_EXPORT int loc_country_code_is_valid(const char* cc) { | |
177 | // It cannot be NULL | |
178 | if (!cc || !*cc) | |
179 | return 0; | |
180 | ||
181 | // It must be 2 characters long | |
182 | if (strlen(cc) != 2) | |
183 | return 0; | |
184 | ||
185 | // It must only contain A-Z | |
186 | for (unsigned int i = 0; i < 2; i++) { | |
187 | if (cc[i] < 'A' || cc[i] > 'Z') | |
188 | return 0; | |
189 | } | |
190 | ||
191 | // Looks valid | |
192 | return 1; | |
193 | } |