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Get zone name by stripping */zoneinfo/

This commit is contained in:
K 2022-05-10 10:50:17 +05:00 committed by Scott Lamb
parent 8e8b48b906
commit 0d2cda5c18
1 changed files with 17 additions and 20 deletions
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29
server/src/cmds/run/mod.rs
View File

@ -43,18 +43,13 @@ pub struct Args {
// They seem to be correct for Linux and macOS at least.
const LOCALTIME_PATH: &str = "/etc/localtime";
const TIMEZONE_PATH: &str = "/etc/timezone";
const ZONEINFO_PATHS: [&str; 2] = [
"/usr/share/zoneinfo/", // Linux, macOS < High Sierra
"/var/db/timezone/zoneinfo/", // macOS High Sierra
];
fn trim_zoneinfo(path: &str) -> &str {
for zp in &ZONEINFO_PATHS {
if let Some(p) = path.strip_prefix(zp) {
return p;
}
}
path
// Some well-known zone paths looks like the following:
// /usr/share/zoneinfo/* for Linux and macOS < High Sierra
// /var/db/timezone/zoneinfo/* for macOS High Sierra
// /etc/zoneinfo/* for NixOS
fn zoneinfo_name(path: &str) -> Option<&str> {
path.rsplit_once("/zoneinfo/").map(|(_, name)| name)
}
/// Attempt to resolve the timezone of the server.
@ -72,11 +67,14 @@ fn resolve_zone() -> Result<String, Error> {
p = &p[1..];
}
p = trim_zoneinfo(p);
if let Some(p) = zoneinfo_name(p) {
return Ok(p.to_owned());
}
if !p.starts_with('/') {
return Ok(p.to_owned());
}
if p != LOCALTIME_PATH {
bail!("Unable to resolve env TZ={} to a timezone.", &tz);
}
@ -90,16 +88,15 @@ fn resolve_zone() -> Result<String, Error> {
Some(d) => d,
None => bail!("{} symlink destination is invalid UTF-8", LOCALTIME_PATH),
};
let p = trim_zoneinfo(localtime_dest);
if p.starts_with('/') {
if let Some(p) = zoneinfo_name(localtime_dest) {
return Ok(p.to_owned());
}
bail!(
"Unable to resolve {} symlink destination {} to a timezone.",
LOCALTIME_PATH,
&localtime_dest
);
}
return Ok(p.to_owned());
}
Err(e) => {
use ::std::io::ErrorKind;
if e.kind() != ErrorKind::NotFound && e.kind() != ErrorKind::InvalidInput {