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1 | /* SPDX-License-Identifier: LGPL-2.1+ */ | |
2 | /*** | |
3 | Copyright 2014 Kay Sievers, Lennart Poettering | |
4 | ***/ | |
5 | ||
6 | #include "alloc-util.h" | |
7 | #include "timesyncd-server.h" | |
8 | ||
9 | int server_address_new( | |
10 | ServerName *n, | |
11 | ServerAddress **ret, | |
12 | const union sockaddr_union *sockaddr, | |
13 | socklen_t socklen) { | |
14 | ||
15 | ServerAddress *a, *tail; | |
16 | ||
17 | assert(n); | |
18 | assert(sockaddr); | |
19 | assert(socklen >= offsetof(struct sockaddr, sa_data)); | |
20 | assert(socklen <= sizeof(union sockaddr_union)); | |
21 | ||
22 | a = new0(ServerAddress, 1); | |
23 | if (!a) | |
24 | return -ENOMEM; | |
25 | ||
26 | memcpy(&a->sockaddr, sockaddr, socklen); | |
27 | a->socklen = socklen; | |
28 | ||
29 | LIST_FIND_TAIL(addresses, n->addresses, tail); | |
30 | LIST_INSERT_AFTER(addresses, n->addresses, tail, a); | |
31 | a->name = n; | |
32 | ||
33 | if (ret) | |
34 | *ret = a; | |
35 | ||
36 | return 0; | |
37 | } | |
38 | ||
39 | ServerAddress* server_address_free(ServerAddress *a) { | |
40 | if (!a) | |
41 | return NULL; | |
42 | ||
43 | if (a->name) { | |
44 | LIST_REMOVE(addresses, a->name->addresses, a); | |
45 | ||
46 | if (a->name->manager && a->name->manager->current_server_address == a) | |
47 | manager_set_server_address(a->name->manager, NULL); | |
48 | } | |
49 | ||
50 | return mfree(a); | |
51 | } | |
52 | ||
53 | int server_name_new( | |
54 | Manager *m, | |
55 | ServerName **ret, | |
56 | ServerType type, | |
57 | const char *string) { | |
58 | ||
59 | ServerName *n, *tail; | |
60 | ||
61 | assert(m); | |
62 | assert(string); | |
63 | ||
64 | n = new0(ServerName, 1); | |
65 | if (!n) | |
66 | return -ENOMEM; | |
67 | ||
68 | n->type = type; | |
69 | n->string = strdup(string); | |
70 | if (!n->string) { | |
71 | free(n); | |
72 | return -ENOMEM; | |
73 | } | |
74 | ||
75 | if (type == SERVER_SYSTEM) { | |
76 | LIST_FIND_TAIL(names, m->system_servers, tail); | |
77 | LIST_INSERT_AFTER(names, m->system_servers, tail, n); | |
78 | } else if (type == SERVER_LINK) { | |
79 | LIST_FIND_TAIL(names, m->link_servers, tail); | |
80 | LIST_INSERT_AFTER(names, m->link_servers, tail, n); | |
81 | } else if (type == SERVER_FALLBACK) { | |
82 | LIST_FIND_TAIL(names, m->fallback_servers, tail); | |
83 | LIST_INSERT_AFTER(names, m->fallback_servers, tail, n); | |
84 | } else | |
85 | assert_not_reached("Unknown server type"); | |
86 | ||
87 | n->manager = m; | |
88 | ||
89 | if (type != SERVER_FALLBACK && | |
90 | m->current_server_name && | |
91 | m->current_server_name->type == SERVER_FALLBACK) | |
92 | manager_set_server_name(m, NULL); | |
93 | ||
94 | log_debug("Added new server %s.", string); | |
95 | ||
96 | if (ret) | |
97 | *ret = n; | |
98 | ||
99 | return 0; | |
100 | } | |
101 | ||
102 | ServerName *server_name_free(ServerName *n) { | |
103 | if (!n) | |
104 | return NULL; | |
105 | ||
106 | server_name_flush_addresses(n); | |
107 | ||
108 | if (n->manager) { | |
109 | if (n->type == SERVER_SYSTEM) | |
110 | LIST_REMOVE(names, n->manager->system_servers, n); | |
111 | else if (n->type == SERVER_LINK) | |
112 | LIST_REMOVE(names, n->manager->link_servers, n); | |
113 | else if (n->type == SERVER_FALLBACK) | |
114 | LIST_REMOVE(names, n->manager->fallback_servers, n); | |
115 | else | |
116 | assert_not_reached("Unknown server type"); | |
117 | ||
118 | if (n->manager->current_server_name == n) | |
119 | manager_set_server_name(n->manager, NULL); | |
120 | } | |
121 | ||
122 | log_debug("Removed server %s.", n->string); | |
123 | ||
124 | free(n->string); | |
125 | return mfree(n); | |
126 | } | |
127 | ||
128 | void server_name_flush_addresses(ServerName *n) { | |
129 | assert(n); | |
130 | ||
131 | while (n->addresses) | |
132 | server_address_free(n->addresses); | |
133 | } |