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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 2013 Tom Gundersen <teg@jklm.no> | |
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 <net/if.h> | |
23 | ||
24 | #include "networkd.h" | |
25 | ||
26 | #include "utf8.h" | |
27 | #include "util.h" | |
28 | #include "conf-parser.h" | |
29 | #include "net-util.h" | |
30 | ||
31 | int address_new(Network *network, Address **ret) { | |
32 | _cleanup_address_free_ Address *address = NULL; | |
33 | ||
34 | address = new0(Address, 1); | |
35 | if (!address) | |
36 | return -ENOMEM; | |
37 | ||
38 | address->network = network; | |
39 | ||
40 | LIST_PREPEND(addresses, network->addresses, address); | |
41 | ||
42 | *ret = address; | |
43 | address = NULL; | |
44 | ||
45 | return 0; | |
46 | } | |
47 | ||
48 | void address_free(Address *address) { | |
49 | if (!address) | |
50 | return; | |
51 | ||
52 | LIST_REMOVE(addresses, address->network->addresses, address); | |
53 | ||
54 | free(address->label); | |
55 | free(address); | |
56 | } | |
57 | ||
58 | int address_configure(Manager *manager, Address *address, Link *link) { | |
59 | _cleanup_sd_rtnl_message_unref_ sd_rtnl_message *req = NULL; | |
60 | int r; | |
61 | ||
62 | r = sd_rtnl_message_addr_new(RTM_NEWADDR, link->ifindex, | |
63 | address->family, address->prefixlen, | |
64 | IFA_F_PERMANENT, RT_SCOPE_UNIVERSE, &req); | |
65 | if (r < 0) { | |
66 | log_error("Could not allocate RTM_NEWADDR message: %s", | |
67 | strerror(-r)); | |
68 | return r; | |
69 | } | |
70 | ||
71 | r = sd_rtnl_message_append(req, IFA_LOCAL, &address->in_addr); | |
72 | if (r < 0) { | |
73 | log_error("Could not append IFA_LOCAL attribute: %s", | |
74 | strerror(-r)); | |
75 | return r; | |
76 | } | |
77 | ||
78 | if (address->family == AF_INET) { | |
79 | struct in_addr broadcast; | |
80 | ||
81 | broadcast.s_addr = address->in_addr.in.s_addr | | |
82 | htonl(0xfffffffflu >> address->prefixlen); | |
83 | ||
84 | r = sd_rtnl_message_append(req, IFA_BROADCAST, &broadcast); | |
85 | if (r < 0) { | |
86 | log_error("Could not append IFA_BROADCAST attribute: %s", | |
87 | strerror(-r)); | |
88 | return r; | |
89 | } | |
90 | } | |
91 | ||
92 | if (address->label) { | |
93 | r = sd_rtnl_message_append(req, IFA_LABEL, address->label); | |
94 | if (r < 0) { | |
95 | log_error("Could not append IFA_LABEL attribute: %s", | |
96 | strerror(-r)); | |
97 | return r; | |
98 | } | |
99 | } | |
100 | ||
fe4824e0 | 101 | r = sd_rtnl_call(manager->rtnl, req, 0, NULL); |
f579559b TG |
102 | if (r < 0) { |
103 | log_error("Could not configure address: %s", strerror(-r)); | |
104 | return r != -EEXIST ? r : 0; | |
105 | } | |
106 | ||
107 | log_info("Configured interface address"); | |
108 | ||
109 | return 0; | |
110 | } | |
111 | ||
112 | int config_parse_address(const char *unit, | |
113 | const char *filename, | |
114 | unsigned line, | |
115 | const char *section, | |
116 | const char *lvalue, | |
117 | int ltype, | |
118 | const char *rvalue, | |
119 | void *data, | |
120 | void *userdata) { | |
121 | _cleanup_address_free_ Address *n = NULL; | |
122 | _cleanup_free_ char *address = NULL; | |
123 | const char *e; | |
124 | int r; | |
125 | ||
126 | assert(filename); | |
127 | assert(lvalue); | |
128 | assert(rvalue); | |
129 | assert(data); | |
130 | ||
131 | r = address_new(userdata, &n); | |
132 | if (r < 0) | |
133 | return r; | |
134 | ||
135 | /* Address=address/prefixlen */ | |
136 | ||
137 | /* prefixlen */ | |
138 | e = strchr(rvalue, '/'); | |
139 | if (e) { | |
140 | unsigned i; | |
141 | r = safe_atou(e + 1, &i); | |
142 | if (r < 0) { | |
143 | log_syntax(unit, LOG_ERR, filename, line, EINVAL, | |
144 | "Interface prefix length is invalid, " | |
145 | "ignoring assignment: %s", e + 1); | |
146 | return 0; | |
147 | } | |
148 | ||
149 | n->prefixlen = (unsigned char) i; | |
150 | address = strndup(rvalue, e - rvalue); | |
151 | if (!address) | |
152 | return log_oom(); | |
153 | } else { | |
154 | address = strdup(rvalue); | |
155 | if (!address) | |
156 | return log_oom(); | |
157 | } | |
158 | ||
159 | r = net_parse_inaddr(address, &n->family, &n->in_addr); | |
160 | if (r < 0) { | |
161 | log_syntax(unit, LOG_ERR, filename, line, EINVAL, | |
162 | "Address is invalid, ignoring assignment: %s", address); | |
163 | return 0; | |
164 | } | |
165 | ||
166 | n = NULL; | |
167 | ||
168 | return 0; | |
169 | } |