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1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
2 | ||
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2014 Kay Sievers, Lennart Poettering | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
9 | under the terms of the GNU Lesser General Public License as published by | |
10 | the Free Software Foundation; either version 2.1 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | systemd is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | Lesser General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU Lesser General Public License | |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
20 | ***/ | |
21 | ||
22 | #include "timesyncd-server.h" | |
874ff7bf LP |
23 | |
24 | int server_address_new( | |
25 | ServerName *n, | |
26 | ServerAddress **ret, | |
27 | const union sockaddr_union *sockaddr, | |
28 | socklen_t socklen) { | |
29 | ||
30 | ServerAddress *a, *tail; | |
31 | ||
32 | assert(n); | |
33 | assert(sockaddr); | |
34 | assert(socklen >= offsetof(struct sockaddr, sa_data)); | |
35 | assert(socklen <= sizeof(union sockaddr_union)); | |
36 | ||
37 | a = new0(ServerAddress, 1); | |
38 | if (!a) | |
39 | return -ENOMEM; | |
40 | ||
41 | memcpy(&a->sockaddr, sockaddr, socklen); | |
42 | a->socklen = socklen; | |
43 | ||
44 | LIST_FIND_TAIL(addresses, n->addresses, tail); | |
45 | LIST_INSERT_AFTER(addresses, n->addresses, tail, a); | |
46 | a->name = n; | |
47 | ||
48 | if (ret) | |
49 | *ret = a; | |
50 | ||
51 | return 0; | |
52 | } | |
53 | ||
54 | ServerAddress* server_address_free(ServerAddress *a) { | |
55 | if (!a) | |
56 | return NULL; | |
57 | ||
58 | if (a->name) { | |
59 | LIST_REMOVE(addresses, a->name->addresses, a); | |
60 | ||
61 | if (a->name->manager && a->name->manager->current_server_address == a) | |
62 | manager_set_server_address(a->name->manager, NULL); | |
63 | } | |
64 | ||
65 | free(a); | |
66 | return NULL; | |
67 | } | |
68 | ||
69 | int server_name_new( | |
70 | Manager *m, | |
71 | ServerName **ret, | |
72 | ServerType type, | |
73 | const char *string) { | |
74 | ||
75 | ServerName *n, *tail; | |
76 | ||
77 | assert(m); | |
78 | assert(string); | |
79 | ||
80 | n = new0(ServerName, 1); | |
81 | if (!n) | |
82 | return -ENOMEM; | |
83 | ||
84 | n->type = type; | |
85 | n->string = strdup(string); | |
86 | if (!n->string) { | |
87 | free(n); | |
88 | return -ENOMEM; | |
89 | } | |
90 | ||
91 | if (type == SERVER_SYSTEM) { | |
92 | LIST_FIND_TAIL(names, m->system_servers, tail); | |
93 | LIST_INSERT_AFTER(names, m->system_servers, tail, n); | |
94 | } else if (type == SERVER_LINK) { | |
95 | LIST_FIND_TAIL(names, m->link_servers, tail); | |
96 | LIST_INSERT_AFTER(names, m->link_servers, tail, n); | |
97 | } else if (type == SERVER_FALLBACK) { | |
98 | LIST_FIND_TAIL(names, m->fallback_servers, tail); | |
99 | LIST_INSERT_AFTER(names, m->fallback_servers, tail, n); | |
100 | } else | |
101 | assert_not_reached("Unknown server type"); | |
102 | ||
103 | n->manager = m; | |
104 | ||
105 | if (type != SERVER_FALLBACK && | |
106 | m->current_server_name && | |
107 | m->current_server_name->type == SERVER_FALLBACK) | |
108 | manager_set_server_name(m, NULL); | |
109 | ||
110 | log_debug("Added new server %s.", string); | |
111 | ||
112 | if (ret) | |
113 | *ret = n; | |
114 | ||
115 | return 0; | |
116 | } | |
117 | ||
118 | ServerName *server_name_free(ServerName *n) { | |
119 | if (!n) | |
120 | return NULL; | |
121 | ||
122 | server_name_flush_addresses(n); | |
123 | ||
124 | if (n->manager) { | |
125 | if (n->type == SERVER_SYSTEM) | |
126 | LIST_REMOVE(names, n->manager->system_servers, n); | |
127 | else if (n->type == SERVER_LINK) | |
128 | LIST_REMOVE(names, n->manager->link_servers, n); | |
129 | else if (n->type == SERVER_FALLBACK) | |
130 | LIST_REMOVE(names, n->manager->fallback_servers, n); | |
131 | else | |
132 | assert_not_reached("Unknown server type"); | |
133 | ||
134 | if (n->manager->current_server_name == n) | |
135 | manager_set_server_name(n->manager, NULL); | |
136 | } | |
137 | ||
138 | log_debug("Removed server %s.", n->string); | |
139 | ||
140 | free(n->string); | |
141 | free(n); | |
142 | ||
143 | return NULL; | |
144 | } | |
145 | ||
146 | void server_name_flush_addresses(ServerName *n) { | |
147 | assert(n); | |
148 | ||
149 | while (n->addresses) | |
150 | server_address_free(n->addresses); | |
151 | } |