src/api2/node/time.rs

   1 use failure::*;
   2
   3 use crate::tools;
   4 use crate::api::schema::*;
   5 use crate::api::router::*;
   6 use serde_json::{json, Value};
   7
   8 use chrono::prelude::*;
   9
  10 fn read_etc_localtime() -> Result<String, Error> {
  11
  12     let line = tools::file_read_firstline("/etc/timezone")?;
  13
  14     Ok(line.trim().to_owned())
  15 }
  16
  17 fn get_time(
  18     _param: Value,
  19     _info: &ApiMethod,
  20     _rpcenv: &mut RpcEnvironment,
  21 ) -> Result<Value, Error> {
  22
  23     let datetime = Local::now();
  24     let offset = datetime.offset();
  25     let time = datetime.timestamp();
  26     let localtime = time + (offset.fix().local_minus_utc() as i64);
  27
  28     Ok(json!({
  29         "timezone": read_etc_localtime()?,
  30         "time": time,
  31         "localtime": localtime,
  32     }))
  33 }
  34
  35 extern "C"  { fn tzset(); }
  36
  37 // Note:: this needs root rights ??
  38
  39 fn set_timezone(
  40     param: Value,
  41     _info: &ApiMethod,
  42     _rpcenv: &mut RpcEnvironment,
  43 ) -> Result<Value, Error> {
  44
  45     let timezone = tools::required_string_param(&param, "timezone")?;
  46
  47     let path = std::path::PathBuf::from(format!("/usr/share/zoneinfo/{}", timezone));
  48
  49     if !path.exists() {
  50         bail!("No such timezone.");
  51     }
  52
  53     tools::file_set_contents("/etc/timezone", timezone.as_bytes(), None)?;
  54
  55     let _ = std::fs::remove_file("/etc/localtime");
  56
  57     use std::os::unix::fs::symlink;
  58     symlink(path, "/etc/localtime")?;
  59
  60     unsafe { tzset() };
  61
  62     Ok(Value::Null)
  63 }
  64
  65 pub fn router() -> Router {
  66
  67     let route = Router::new()
  68         .get(
  69             ApiMethod::new(
  70                 get_time,
  71                 ObjectSchema::new("Read server time and time zone settings.")
  72             ).returns(
  73                 ObjectSchema::new("Returns server time and timezone.")
  74                     .required("timezone", StringSchema::new("Time zone"))
  75                     .required("time", IntegerSchema::new("Seconds since 1970-01-01 00:00:00 UTC.")
  76                               .minimum(1297163644))
  77                     .required("localtime", IntegerSchema::new("Seconds since 1970-01-01 00:00:00 UTC. (local time)")
  78                               .minimum(1297163644))
  79             )
  80         )
  81         .put(
  82             ApiMethod::new(
  83                 set_timezone,
  84                 ObjectSchema::new("Set time zone.")
  85                     .required("timezone", StringSchema::new("Time zone. The file '/usr/share/zoneinfo/zone.tab' contains the list of valid names."))
  86             ).protected(true)
  87         );
  88
  89
  90     route
  91 }