mirror of
https://github.com/morgan9e/systemd
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17f244e8f9
Let's give these special IP addresses names. After all name resolution is our job here. Fixes: #23623
72 lines
2.3 KiB
C
72 lines
2.3 KiB
C
/* SPDX-License-Identifier: LGPL-2.1-or-later */
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#pragma once
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#include <stdbool.h>
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#include <stdio.h>
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#include "macro.h"
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#include "strv.h"
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typedef enum GetHostnameFlags {
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GET_HOSTNAME_ALLOW_LOCALHOST = 1 << 0, /* accepts "localhost" or friends. */
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GET_HOSTNAME_FALLBACK_DEFAULT = 1 << 1, /* use default hostname if no hostname is set. */
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GET_HOSTNAME_SHORT = 1 << 2, /* kills the FQDN part if present. */
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} GetHostnameFlags;
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int gethostname_full(GetHostnameFlags flags, char **ret);
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static inline int gethostname_strict(char **ret) {
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return gethostname_full(0, ret);
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}
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static inline char* gethostname_malloc(void) {
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char *s;
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if (gethostname_full(GET_HOSTNAME_ALLOW_LOCALHOST | GET_HOSTNAME_FALLBACK_DEFAULT, &s) < 0)
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return NULL;
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return s;
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}
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static inline char* gethostname_short_malloc(void) {
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char *s;
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if (gethostname_full(GET_HOSTNAME_ALLOW_LOCALHOST | GET_HOSTNAME_FALLBACK_DEFAULT | GET_HOSTNAME_SHORT, &s) < 0)
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return NULL;
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return s;
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}
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char* get_default_hostname(void);
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bool valid_ldh_char(char c) _const_;
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typedef enum ValidHostnameFlags {
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VALID_HOSTNAME_TRAILING_DOT = 1 << 0, /* Accept trailing dot on multi-label names */
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VALID_HOSTNAME_DOT_HOST = 1 << 1, /* Accept ".host" as valid hostname */
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} ValidHostnameFlags;
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bool hostname_is_valid(const char *s, ValidHostnameFlags flags) _pure_;
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char* hostname_cleanup(char *s);
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bool is_localhost(const char *hostname);
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static inline bool is_gateway_hostname(const char *hostname) {
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/* This tries to identify the valid syntaxes for the our synthetic "gateway" host. */
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return STRCASE_IN_SET(hostname, "_gateway", "_gateway.");
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}
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static inline bool is_outbound_hostname(const char *hostname) {
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/* This tries to identify the valid syntaxes for the our synthetic "outbound" host. */
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return STRCASE_IN_SET(hostname, "_outbound", "_outbound.");
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}
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static inline bool is_dns_stub_hostname(const char *hostname) {
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return STRCASE_IN_SET(hostname, "_localdnsstub", "_localdnsstub.");
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}
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static inline bool is_dns_proxy_stub_hostname(const char *hostname) {
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return STRCASE_IN_SET(hostname, "_localdnsproxy", "_localdnsproxy.");
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}
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int get_pretty_hostname(char **ret);
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