11a1589223
Files which are installed as-is (any .service and other unit files, .conf files, .policy files, etc), are left as is. My assumption is that SPDX identifiers are not yet that well known, so it's better to retain the extended header to avoid any doubt. I also kept any copyright lines. We can probably remove them, but it'd nice to obtain explicit acks from all involved authors before doing that.
103 lines
3.6 KiB
C
103 lines
3.6 KiB
C
/* SPDX-License-Identifier: LGPL-2.1+ */
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#pragma once
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/***
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This file is part of systemd.
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Copyright 2014 Lennart Poettering
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***/
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#include <errno.h>
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#include <stdbool.h>
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#include <stddef.h>
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#include <stdint.h>
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#include "hashmap.h"
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#include "in-addr-util.h"
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/* Length of a single label, with all escaping removed, excluding any trailing dot or NUL byte */
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#define DNS_LABEL_MAX 63
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/* Worst case length of a single label, with all escaping applied and room for a trailing NUL byte. */
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#define DNS_LABEL_ESCAPED_MAX (DNS_LABEL_MAX*4+1)
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/* Maximum length of a full hostname, consisting of a series of unescaped labels, and no trailing dot or NUL byte */
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#define DNS_HOSTNAME_MAX 253
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/* Maximum length of a full hostname, on the wire, including the final NUL byte */
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#define DNS_WIRE_FOMAT_HOSTNAME_MAX 255
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/* Maximum number of labels per valid hostname */
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#define DNS_N_LABELS_MAX 127
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int dns_label_unescape(const char **name, char *dest, size_t sz);
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int dns_label_unescape_suffix(const char *name, const char **label_end, char *dest, size_t sz);
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int dns_label_escape(const char *p, size_t l, char *dest, size_t sz);
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int dns_label_escape_new(const char *p, size_t l, char **ret);
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static inline int dns_name_parent(const char **name) {
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return dns_label_unescape(name, NULL, DNS_LABEL_MAX);
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}
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#if HAVE_LIBIDN
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int dns_label_apply_idna(const char *encoded, size_t encoded_size, char *decoded, size_t decoded_max);
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int dns_label_undo_idna(const char *encoded, size_t encoded_size, char *decoded, size_t decoded_max);
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#endif
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int dns_name_concat(const char *a, const char *b, char **ret);
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static inline int dns_name_normalize(const char *s, char **ret) {
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/* dns_name_concat() normalizes as a side-effect */
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return dns_name_concat(s, NULL, ret);
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}
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static inline int dns_name_is_valid(const char *s) {
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int r;
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/* dns_name_normalize() verifies as a side effect */
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r = dns_name_normalize(s, NULL);
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if (r == -EINVAL)
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return 0;
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if (r < 0)
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return r;
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return 1;
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}
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void dns_name_hash_func(const void *s, struct siphash *state);
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int dns_name_compare_func(const void *a, const void *b);
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extern const struct hash_ops dns_name_hash_ops;
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int dns_name_between(const char *a, const char *b, const char *c);
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int dns_name_equal(const char *x, const char *y);
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int dns_name_endswith(const char *name, const char *suffix);
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int dns_name_startswith(const char *name, const char *prefix);
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int dns_name_change_suffix(const char *name, const char *old_suffix, const char *new_suffix, char **ret);
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int dns_name_reverse(int family, const union in_addr_union *a, char **ret);
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int dns_name_address(const char *p, int *family, union in_addr_union *a);
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bool dns_name_is_root(const char *name);
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bool dns_name_is_single_label(const char *name);
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int dns_name_to_wire_format(const char *domain, uint8_t *buffer, size_t len, bool canonical);
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bool dns_srv_type_is_valid(const char *name);
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bool dnssd_srv_type_is_valid(const char *name);
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bool dns_service_name_is_valid(const char *name);
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int dns_service_join(const char *name, const char *type, const char *domain, char **ret);
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int dns_service_split(const char *joined, char **name, char **type, char **domain);
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int dns_name_suffix(const char *name, unsigned n_labels, const char **ret);
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int dns_name_count_labels(const char *name);
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int dns_name_skip(const char *a, unsigned n_labels, const char **ret);
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int dns_name_equal_skip(const char *a, unsigned n_labels, const char *b);
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int dns_name_common_suffix(const char *a, const char *b, const char **ret);
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int dns_name_apply_idna(const char *name, char **ret);
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int dns_name_is_valid_or_address(const char *name);
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