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/* SPDX-License-Identifier: LGPL-2.1-or-later */
#pragma once
#include <stdbool.h>
#include <stdio.h>
#include "macro.h"
#include "strv.h"
typedef enum GetHostnameFlags {
GET_HOSTNAME_ALLOW_LOCALHOST = 1 << 0, /* accepts "localhost" or friends. */
GET_HOSTNAME_FALLBACK_DEFAULT = 1 << 1, /* use default hostname if no hostname is set. */
GET_HOSTNAME_SHORT = 1 << 2, /* kills the FQDN part if present. */
} GetHostnameFlags;
int gethostname_full(GetHostnameFlags flags, char **ret);
static inline int gethostname_strict(char **ret) {
return gethostname_full(0, ret);
}
static inline char* gethostname_malloc(void) {
char *s;
if (gethostname_full(GET_HOSTNAME_ALLOW_LOCALHOST | GET_HOSTNAME_FALLBACK_DEFAULT, &s) < 0)
return NULL;
return s;
}
static inline char* gethostname_short_malloc(void) {
char *s;
if (gethostname_full(GET_HOSTNAME_ALLOW_LOCALHOST | GET_HOSTNAME_FALLBACK_DEFAULT | GET_HOSTNAME_SHORT, &s) < 0)
return NULL;
return s;
}
char* get_default_hostname(void);
bool valid_ldh_char(char c) _const_;
typedef enum ValidHostnameFlags {
VALID_HOSTNAME_TRAILING_DOT = 1 << 0, /* Accept trailing dot on multi-label names */
VALID_HOSTNAME_DOT_HOST = 1 << 1, /* Accept ".host" as valid hostname */
} ValidHostnameFlags;
bool hostname_is_valid(const char *s, ValidHostnameFlags flags) _pure_;
char* hostname_cleanup(char *s);
bool is_localhost(const char *hostname);
static inline bool is_gateway_hostname(const char *hostname) {
/* This tries to identify the valid syntaxes for the our synthetic "gateway" host. */
return STRCASE_IN_SET(hostname, "_gateway", "_gateway.");
}
static inline bool is_outbound_hostname(const char *hostname) {
/* This tries to identify the valid syntaxes for the our synthetic "outbound" host. */
return STRCASE_IN_SET(hostname, "_outbound", "_outbound.");
}
static inline bool is_dns_stub_hostname(const char *hostname) {
return STRCASE_IN_SET(hostname, "_localdnsstub", "_localdnsstub.");
}
static inline bool is_dns_proxy_stub_hostname(const char *hostname) {
return STRCASE_IN_SET(hostname, "_localdnsproxy", "_localdnsproxy.");
}
int get_pretty_hostname(char **ret);
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