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use libc::c_long;
use std::{ptr, fmt};
use std::marker::PhantomData;
use std::ops::Deref;
use ffi;
use {cvt, cvt_p};
use bio::MemBio;
use error::ErrorStack;
/// Corresponds to the ASN.1 structure Time defined in RFC5280
pub struct Asn1Time(Asn1TimeRef<'static>);
impl Asn1Time {
/// Wraps existing ASN1_TIME and takes ownership
pub unsafe fn from_ptr(handle: *mut ffi::ASN1_TIME) -> Asn1Time {
Asn1Time(Asn1TimeRef::from_ptr(handle))
}
fn from_period(period: c_long) -> Result<Asn1Time, ErrorStack> {
ffi::init();
unsafe {
let handle = try!(cvt_p(ffi::X509_gmtime_adj(ptr::null_mut(), period)));
Ok(Asn1Time::from_ptr(handle))
}
}
/// Creates a new time on specified interval in days from now
pub fn days_from_now(days: u32) -> Result<Asn1Time, ErrorStack> {
Asn1Time::from_period(days as c_long * 60 * 60 * 24)
}
}
impl Deref for Asn1Time {
type Target = Asn1TimeRef<'static>;
fn deref(&self) -> &Asn1TimeRef<'static> {
&self.0
}
}
/// A borrowed Asn1Time
pub struct Asn1TimeRef<'a>(*mut ffi::ASN1_TIME, PhantomData<&'a ()>);
impl<'a> Asn1TimeRef<'a> {
/// Creates a new `Asn1TimeRef` wrapping the provided handle.
pub unsafe fn from_ptr(handle: *mut ffi::ASN1_TIME) -> Asn1TimeRef<'a> {
Asn1TimeRef(handle, PhantomData)
}
/// Returns the raw handle
pub fn as_ptr(&self) -> *mut ffi::ASN1_TIME {
self.0
}
}
impl<'a> fmt::Display for Asn1TimeRef<'a> {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
let mem_bio = try!(MemBio::new());
let as_str = unsafe {
try!(cvt(ffi::ASN1_TIME_print(mem_bio.as_ptr(), self.0)));
String::from_utf8_unchecked(mem_bio.get_buf().to_owned())
};
write!(f, "{}", as_str)
}
}
impl Drop for Asn1Time {
fn drop(&mut self) {
unsafe { ffi::ASN1_TIME_free(self.as_ptr()) };
}
}
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