From 8afdea4cef99e4e22d7e941cb779cefcb65d2284 Mon Sep 17 00:00:00 2001 From: Luke Shumaker Date: Wed, 27 Jul 2016 23:53:49 -0400 Subject: ./move.sh --- src/libshared/include/shared/dns-domain.h | 109 ++++++++++++++++++++++++++++++ 1 file changed, 109 insertions(+) create mode 100644 src/libshared/include/shared/dns-domain.h (limited to 'src/libshared/include/shared/dns-domain.h') diff --git a/src/libshared/include/shared/dns-domain.h b/src/libshared/include/shared/dns-domain.h new file mode 100644 index 0000000000..af780f0b8b --- /dev/null +++ b/src/libshared/include/shared/dns-domain.h @@ -0,0 +1,109 @@ +#pragma once + +/*** + This file is part of systemd. + + Copyright 2014 Lennart Poettering + + systemd is free software; you can redistribute it and/or modify it + under the terms of the GNU Lesser General Public License as published by + the Free Software Foundation; either version 2.1 of the License, or + (at your option) any later version. + + systemd is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public License + along with systemd; If not, see . + ***/ + +#include +#include +#include +#include + +#include "hashmap.h" +#include "in-addr-util.h" + +/* Length of a single label, with all escaping removed, excluding any trailing dot or NUL byte */ +#define DNS_LABEL_MAX 63 + +/* Worst case length of a single label, with all escaping applied and room for a trailing NUL byte. */ +#define DNS_LABEL_ESCAPED_MAX (DNS_LABEL_MAX*4+1) + +/* Maximum length of a full hostname, consisting of a series of unescaped labels, and no trailing dot or NUL byte */ +#define DNS_HOSTNAME_MAX 253 + +/* Maximum length of a full hostname, on the wire, including the final NUL byte */ +#define DNS_WIRE_FOMAT_HOSTNAME_MAX 255 + +/* Maximum number of labels per valid hostname */ +#define DNS_N_LABELS_MAX 127 + +int dns_label_unescape(const char **name, char *dest, size_t sz); +int dns_label_unescape_suffix(const char *name, const char **label_end, char *dest, size_t sz); +int dns_label_escape(const char *p, size_t l, char *dest, size_t sz); +int dns_label_escape_new(const char *p, size_t l, char **ret); + +static inline int dns_name_parent(const char **name) { + return dns_label_unescape(name, NULL, DNS_LABEL_MAX); +} + +int dns_label_apply_idna(const char *encoded, size_t encoded_size, char *decoded, size_t decoded_max); +int dns_label_undo_idna(const char *encoded, size_t encoded_size, char *decoded, size_t decoded_max); + +int dns_name_concat(const char *a, const char *b, char **ret); + +static inline int dns_name_normalize(const char *s, char **ret) { + /* dns_name_concat() normalizes as a side-effect */ + return dns_name_concat(s, NULL, ret); +} + +static inline int dns_name_is_valid(const char *s) { + int r; + + /* dns_name_normalize() verifies as a side effect */ + r = dns_name_normalize(s, NULL); + if (r == -EINVAL) + return 0; + if (r < 0) + return r; + return 1; +} + +void dns_name_hash_func(const void *s, struct siphash *state); +int dns_name_compare_func(const void *a, const void *b); +extern const struct hash_ops dns_name_hash_ops; + +int dns_name_between(const char *a, const char *b, const char *c); +int dns_name_equal(const char *x, const char *y); +int dns_name_endswith(const char *name, const char *suffix); +int dns_name_startswith(const char *name, const char *prefix); + +int dns_name_change_suffix(const char *name, const char *old_suffix, const char *new_suffix, char **ret); + +int dns_name_reverse(int family, const union in_addr_union *a, char **ret); +int dns_name_address(const char *p, int *family, union in_addr_union *a); + +bool dns_name_is_root(const char *name); +bool dns_name_is_single_label(const char *name); + +int dns_name_to_wire_format(const char *domain, uint8_t *buffer, size_t len, bool canonical); + +bool dns_srv_type_is_valid(const char *name); +bool dns_service_name_is_valid(const char *name); + +int dns_service_join(const char *name, const char *type, const char *domain, char **ret); +int dns_service_split(const char *joined, char **name, char **type, char **domain); + +int dns_name_suffix(const char *name, unsigned n_labels, const char **ret); +int dns_name_count_labels(const char *name); + +int dns_name_skip(const char *a, unsigned n_labels, const char **ret); +int dns_name_equal_skip(const char *a, unsigned n_labels, const char *b); + +int dns_name_common_suffix(const char *a, const char *b, const char **ret); + +int dns_name_apply_idna(const char *name, char **ret); -- cgit v1.2.3-54-g00ecf