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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 15:35:18 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 15:35:18 +0000 |
commit | b750101eb236130cf056c675997decbac904cc49 (patch) | |
tree | a5df1a06754bdd014cb975c051c83b01c9a97532 /src/basic/hostname-util.h | |
parent | Initial commit. (diff) | |
download | systemd-upstream.tar.xz systemd-upstream.zip |
Adding upstream version 252.22.upstream/252.22upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | src/basic/hostname-util.h | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/src/basic/hostname-util.h b/src/basic/hostname-util.h new file mode 100644 index 0000000..a00b852 --- /dev/null +++ b/src/basic/hostname-util.h @@ -0,0 +1,63 @@ +/* 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."); +} + +int get_pretty_hostname(char **ret); |