1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130

use std::time::{SystemTime, UNIX_EPOCH};

use headers::Header;
use http::Method as httpMethod;

use crate::body::Body;
use crate::errors::DavError;
use crate::DavResult;

/// HTTP Methods supported by DavHandler.
#[derive(Debug, PartialEq, Eq, Hash, Clone, Copy)]
#[repr(u32)]
pub enum Method {
    Head      = 0x0001,
    Get       = 0x0002,
    Put       = 0x0004,
    Patch     = 0x0008,
    Options   = 0x0010,
    PropFind  = 0x0020,
    PropPatch = 0x0040,
    MkCol     = 0x0080,
    Copy      = 0x0100,
    Move      = 0x0200,
    Delete    = 0x0400,
    Lock      = 0x0800,
    Unlock    = 0x1000,
}

// translate method into our own enum that has webdav methods as well.
pub(crate) fn dav_method(m: &http::Method) -> DavResult<Method> {
    let m = match m {
        &httpMethod::HEAD => Method::Head,
        &httpMethod::GET => Method::Get,
        &httpMethod::PUT => Method::Put,
        &httpMethod::PATCH => Method::Patch,
        &httpMethod::DELETE => Method::Delete,
        &httpMethod::OPTIONS => Method::Options,
        _ => {
            match m.as_str() {
                "PROPFIND" => Method::PropFind,
                "PROPPATCH" => Method::PropPatch,
                "MKCOL" => Method::MkCol,
                "COPY" => Method::Copy,
                "MOVE" => Method::Move,
                "LOCK" => Method::Lock,
                "UNLOCK" => Method::Unlock,
                _ => {
                    return Err(DavError::UnknownMethod);
                },
            }
        },
    };
    Ok(m)
}

/// A set of allowed [`Method`]s.
///
/// [`Method`]: enum.Method.html
#[derive(Clone, Copy)]
pub struct AllowedMethods(u32);

impl AllowedMethods {
    /// New set, all methods allowed.
    pub fn all() -> AllowedMethods {
        AllowedMethods(0xffffffff)
    }

    /// New set, no methods allowed.
    pub fn none() -> AllowedMethods {
        AllowedMethods(0)
    }

    /// Add a method.
    pub fn add(&mut self, m: Method) -> &Self {
        self.0 |= m as u32;
        self
    }

    /// Remove a method.
    pub fn remove(&mut self, m: Method) -> &Self {
        self.0 &= !(m as u32);
        self
    }

    /// Check if method is allowed.
    pub fn allowed(&self, m: Method) -> bool {
        self.0 & (m as u32) > 0
    }
}

// return a 404 reply.
pub(crate) fn notfound() -> http::Response<Body> {
    http::Response::builder()
        .status(404)
        .header("connection", "close")
        .body(Body::from("Not Found"))
        .unwrap()
}

pub(crate) fn dav_xml_error(body: &str) -> Body {
    let xml = format!(
        "{}\n{}\n{}\n{}\n",
        r#"<?xml version="1.0" encoding="utf-8" ?>"#, r#"<D:error xmlns:D="DAV:">"#, body, r#"</D:error>"#
    );
    Body::from(xml)
}

pub(crate) fn systemtime_to_timespec(t: SystemTime) -> time::Timespec {
    match t.duration_since(UNIX_EPOCH) {
        Ok(t) => {
            time::Timespec {
                sec:  t.as_secs() as i64,
                nsec: 0,
            }
        },
        Err(_) => time::Timespec { sec: 0, nsec: 0 },
    }
}

pub(crate) fn systemtime_to_httpdate(t: SystemTime) -> String {
    let d = headers::Date::from(t);
    let mut v = Vec::new();
    d.encode(&mut v);
    v[0].to_str().unwrap().to_owned()
}

pub(crate) fn systemtime_to_rfc3339(t: SystemTime) -> String {
    let ts = systemtime_to_timespec(t);
    format!("{}", time::at_utc(ts).rfc3339())
}