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Commit | Line | Data |
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db9ecf05 | 1 | /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
fc2f9534 | 2 | |
f02ba163 | 3 | #include "condition.h" |
fc2f9534 | 4 | #include "conf-parser.h" |
fd221544 | 5 | #include "networkd-link.h" |
fc2f9534 | 6 | #include "networkd-util.h" |
6bedfcbb | 7 | #include "parse-util.h" |
8b43440b | 8 | #include "string-table.h" |
07630cea LP |
9 | #include "string-util.h" |
10 | #include "util.h" | |
fc2f9534 | 11 | |
ddc026f3 | 12 | static const char* const address_family_table[_ADDRESS_FAMILY_MAX] = { |
135c4aad LP |
13 | [ADDRESS_FAMILY_NO] = "no", |
14 | [ADDRESS_FAMILY_YES] = "yes", | |
15 | [ADDRESS_FAMILY_IPV4] = "ipv4", | |
16 | [ADDRESS_FAMILY_IPV6] = "ipv6", | |
e800fd24 YW |
17 | }; |
18 | ||
ddc026f3 | 19 | static const char* const routing_policy_rule_address_family_table[_ADDRESS_FAMILY_MAX] = { |
135c4aad LP |
20 | [ADDRESS_FAMILY_YES] = "both", |
21 | [ADDRESS_FAMILY_IPV4] = "ipv4", | |
22 | [ADDRESS_FAMILY_IPV6] = "ipv6", | |
f6c6ff97 YW |
23 | }; |
24 | ||
f1923efc | 25 | static const char* const nexthop_address_family_table[_ADDRESS_FAMILY_MAX] = { |
135c4aad LP |
26 | [ADDRESS_FAMILY_IPV4] = "ipv4", |
27 | [ADDRESS_FAMILY_IPV6] = "ipv6", | |
f1923efc YW |
28 | }; |
29 | ||
ddc026f3 | 30 | static const char* const duplicate_address_detection_address_family_table[_ADDRESS_FAMILY_MAX] = { |
135c4aad LP |
31 | [ADDRESS_FAMILY_NO] = "none", |
32 | [ADDRESS_FAMILY_YES] = "both", | |
33 | [ADDRESS_FAMILY_IPV4] = "ipv4", | |
34 | [ADDRESS_FAMILY_IPV6] = "ipv6", | |
051e77ca SS |
35 | }; |
36 | ||
bde8467a | 37 | static const char* const dhcp_deprecated_address_family_table[_ADDRESS_FAMILY_MAX] = { |
135c4aad LP |
38 | [ADDRESS_FAMILY_NO] = "none", |
39 | [ADDRESS_FAMILY_YES] = "both", | |
40 | [ADDRESS_FAMILY_IPV4] = "v4", | |
41 | [ADDRESS_FAMILY_IPV6] = "v6", | |
bde8467a YW |
42 | }; |
43 | ||
4c72d851 YW |
44 | static const char* const ip_masquerade_address_family_table[_ADDRESS_FAMILY_MAX] = { |
45 | [ADDRESS_FAMILY_NO] = "no", | |
46 | [ADDRESS_FAMILY_YES] = "both", | |
47 | [ADDRESS_FAMILY_IPV4] = "ipv4", | |
48 | [ADDRESS_FAMILY_IPV6] = "ipv6", | |
49 | }; | |
50 | ||
ddb82ec2 LP |
51 | static const char* const dhcp_lease_server_type_table[_SD_DHCP_LEASE_SERVER_TYPE_MAX] = { |
52 | [SD_DHCP_LEASE_DNS] = "DNS servers", | |
53 | [SD_DHCP_LEASE_NTP] = "NTP servers", | |
54 | [SD_DHCP_LEASE_SIP] = "SIP servers", | |
55 | [SD_DHCP_LEASE_POP3] = "POP3 servers", | |
56 | [SD_DHCP_LEASE_SMTP] = "SMTP servers", | |
57 | [SD_DHCP_LEASE_LPR] = "LPR servers", | |
ddc026f3 ZJS |
58 | }; |
59 | ||
2d792895 | 60 | DEFINE_STRING_TABLE_LOOKUP_WITH_BOOLEAN(address_family, AddressFamily, ADDRESS_FAMILY_YES); |
3ca1fab7 ZJS |
61 | |
62 | AddressFamily link_local_address_family_from_string(const char *s) { | |
63 | if (streq_ptr(s, "fallback")) /* compat name */ | |
64 | return ADDRESS_FAMILY_YES; | |
65 | if (streq_ptr(s, "fallback-ipv4")) /* compat name */ | |
66 | return ADDRESS_FAMILY_IPV4; | |
67 | return address_family_from_string(s); | |
68 | } | |
69 | ||
f6c6ff97 | 70 | DEFINE_STRING_TABLE_LOOKUP(routing_policy_rule_address_family, AddressFamily); |
f1923efc | 71 | DEFINE_STRING_TABLE_LOOKUP(nexthop_address_family, AddressFamily); |
051e77ca | 72 | DEFINE_STRING_TABLE_LOOKUP(duplicate_address_detection_address_family, AddressFamily); |
2d792895 YW |
73 | DEFINE_CONFIG_PARSE_ENUM(config_parse_link_local_address_family, link_local_address_family, |
74 | AddressFamily, "Failed to parse option"); | |
bde8467a | 75 | DEFINE_STRING_TABLE_LOOKUP_FROM_STRING(dhcp_deprecated_address_family, AddressFamily); |
4c72d851 | 76 | DEFINE_PRIVATE_STRING_TABLE_LOOKUP_FROM_STRING(ip_masquerade_address_family, AddressFamily); |
2324fd3a | 77 | DEFINE_STRING_TABLE_LOOKUP(dhcp_lease_server_type, sd_dhcp_lease_server_type_t); |
fc2f9534 | 78 | |
2d792895 | 79 | int config_parse_address_family_with_kernel( |
fc2f9534 LP |
80 | const char* unit, |
81 | const char *filename, | |
82 | unsigned line, | |
83 | const char *section, | |
84 | unsigned section_line, | |
85 | const char *lvalue, | |
86 | int ltype, | |
87 | const char *rvalue, | |
88 | void *data, | |
89 | void *userdata) { | |
90 | ||
2d792895 | 91 | AddressFamily *fwd = data, s; |
fc2f9534 LP |
92 | |
93 | assert(filename); | |
94 | assert(lvalue); | |
95 | assert(rvalue); | |
96 | assert(data); | |
97 | ||
765afd5c LP |
98 | /* This function is mostly obsolete now. It simply redirects |
99 | * "kernel" to "no". In older networkd versions we used to | |
5238e957 | 100 | * distinguish IPForward=off from IPForward=kernel, where the |
765afd5c LP |
101 | * former would explicitly turn off forwarding while the |
102 | * latter would simply not touch the setting. But that logic | |
103 | * is gone, hence silently accept the old setting, but turn it | |
104 | * to "no". */ | |
105 | ||
2d792895 | 106 | s = address_family_from_string(rvalue); |
fc2f9534 LP |
107 | if (s < 0) { |
108 | if (streq(rvalue, "kernel")) | |
765afd5c | 109 | s = ADDRESS_FAMILY_NO; |
fc2f9534 | 110 | else { |
d96edb2c | 111 | log_syntax(unit, LOG_WARNING, filename, line, 0, "Failed to parse IPForward= option, ignoring: %s", rvalue); |
fc2f9534 LP |
112 | return 0; |
113 | } | |
114 | } | |
115 | ||
116 | *fwd = s; | |
117 | ||
118 | return 0; | |
119 | } | |
f02ba163 | 120 | |
4c72d851 YW |
121 | int config_parse_ip_masquerade( |
122 | const char *unit, | |
123 | const char *filename, | |
124 | unsigned line, | |
125 | const char *section, | |
126 | unsigned section_line, | |
127 | const char *lvalue, | |
128 | int ltype, | |
129 | const char *rvalue, | |
130 | void *data, | |
131 | void *userdata) { | |
132 | ||
133 | AddressFamily a, *ret = data; | |
134 | int r; | |
135 | ||
136 | if (isempty(rvalue)) { | |
137 | *ret = ADDRESS_FAMILY_NO; | |
138 | return 0; | |
139 | } | |
140 | ||
141 | r = parse_boolean(rvalue); | |
142 | if (r >= 0) { | |
143 | if (r) | |
144 | log_syntax(unit, LOG_WARNING, filename, line, 0, | |
145 | "IPMasquerade=%s is deprecated, and it is handled as \"ipv4\" instead of \"both\". " | |
146 | "Please use \"ipv4\" or \"both\".", | |
147 | rvalue); | |
148 | ||
149 | *ret = r ? ADDRESS_FAMILY_IPV4 : ADDRESS_FAMILY_NO; | |
150 | return 0; | |
151 | } | |
152 | ||
153 | a = ip_masquerade_address_family_from_string(rvalue); | |
154 | if (a < 0) { | |
155 | log_syntax(unit, LOG_WARNING, filename, line, a, | |
156 | "Failed to parse IPMasquerade= setting, ignoring assignment: %s", rvalue); | |
157 | return 0; | |
158 | } | |
159 | ||
160 | *ret = a; | |
161 | return 0; | |
162 | } | |
163 | ||
f02ba163 | 164 | /* Router lifetime can be set with netlink interface since kernel >= 4.5 |
5238e957 | 165 | * so for the supported kernel we don't need to expire routes in userspace */ |
f02ba163 DD |
166 | int kernel_route_expiration_supported(void) { |
167 | static int cached = -1; | |
168 | int r; | |
169 | ||
170 | if (cached < 0) { | |
171 | Condition c = { | |
172 | .type = CONDITION_KERNEL_VERSION, | |
173 | .parameter = (char *) ">= 4.5" | |
174 | }; | |
a0b191b7 | 175 | r = condition_test(&c, NULL); |
f02ba163 DD |
176 | if (r < 0) |
177 | return r; | |
178 | ||
179 | cached = r; | |
180 | } | |
181 | return cached; | |
182 | } | |
48315d3d YW |
183 | |
184 | static void network_config_hash_func(const NetworkConfigSection *c, struct siphash *state) { | |
f281fc1e | 185 | siphash24_compress_string(c->filename, state); |
48315d3d YW |
186 | siphash24_compress(&c->line, sizeof(c->line), state); |
187 | } | |
188 | ||
189 | static int network_config_compare_func(const NetworkConfigSection *x, const NetworkConfigSection *y) { | |
190 | int r; | |
191 | ||
192 | r = strcmp(x->filename, y->filename); | |
193 | if (r != 0) | |
194 | return r; | |
195 | ||
196 | return CMP(x->line, y->line); | |
197 | } | |
198 | ||
199 | DEFINE_HASH_OPS(network_config_hash_ops, NetworkConfigSection, network_config_hash_func, network_config_compare_func); | |
200 | ||
201 | int network_config_section_new(const char *filename, unsigned line, NetworkConfigSection **s) { | |
202 | NetworkConfigSection *cs; | |
203 | ||
204 | cs = malloc0(offsetof(NetworkConfigSection, filename) + strlen(filename) + 1); | |
205 | if (!cs) | |
206 | return -ENOMEM; | |
207 | ||
208 | strcpy(cs->filename, filename); | |
209 | cs->line = line; | |
210 | ||
211 | *s = TAKE_PTR(cs); | |
212 | ||
213 | return 0; | |
214 | } | |
215 | ||
833f3663 YW |
216 | unsigned hashmap_find_free_section_line(Hashmap *hashmap) { |
217 | NetworkConfigSection *cs; | |
218 | unsigned n = 0; | |
219 | void *entry; | |
220 | ||
221 | HASHMAP_FOREACH_KEY(entry, cs, hashmap) | |
222 | if (n < cs->line) | |
223 | n = cs->line; | |
224 | ||
225 | return n + 1; | |
226 | } | |
fd221544 YW |
227 | |
228 | int log_link_message_full_errno(Link *link, sd_netlink_message *m, int level, int err, const char *msg) { | |
229 | const char *err_msg = NULL; | |
230 | ||
231 | /* link may be NULL. */ | |
232 | ||
233 | (void) sd_netlink_message_read_string(m, NLMSGERR_ATTR_MSG, &err_msg); | |
234 | return log_link_full_errno(link, level, err, | |
235 | "%s: %s%s%s%m", | |
236 | msg, | |
237 | strempty(err_msg), | |
238 | err_msg && !endswith(err_msg, ".") ? "." : "", | |
239 | err_msg ? " " : ""); | |
240 | } |