httpdate-1.0.1/.cargo_vcs_info.json0000644000000001120000000000000126410ustar { "git": { "sha1": "7952a747024facf58c3bf48eb79072a36598dfae" } } httpdate-1.0.1/.github/workflows/ci.yml000064400000000000000000000026200000000000000161300ustar 00000000000000on: [push, pull_request] name: Continuous integration jobs: check: name: Check runs-on: ubuntu-latest steps: - uses: actions/checkout@v2 - uses: actions-rs/toolchain@v1 with: profile: minimal toolchain: stable override: true - uses: actions-rs/cargo@v1 with: command: check test: name: Test Suite runs-on: ubuntu-latest steps: - uses: actions/checkout@v2 - uses: actions-rs/toolchain@v1 with: profile: minimal toolchain: stable override: true - uses: actions-rs/cargo@v1 with: command: test fmt: name: Rustfmt runs-on: ubuntu-latest steps: - uses: actions/checkout@v2 - uses: actions-rs/toolchain@v1 with: profile: minimal toolchain: stable override: true - run: rustup component add rustfmt - uses: actions-rs/cargo@v1 with: command: fmt args: --all -- --check clippy: name: Clippy runs-on: ubuntu-latest steps: - uses: actions/checkout@v2 - uses: actions-rs/toolchain@v1 with: profile: minimal toolchain: stable override: true - run: rustup component add clippy - uses: actions-rs/cargo@v1 with: command: clippy args: -- -D warnings httpdate-1.0.1/.gitignore000064400000000000000000000000220000000000000133770ustar 00000000000000target Cargo.lock httpdate-1.0.1/Cargo.toml0000644000000015060000000000000106470ustar # THIS FILE IS AUTOMATICALLY GENERATED BY CARGO # # When uploading crates to the registry Cargo will automatically # "normalize" Cargo.toml files for maximal compatibility # with all versions of Cargo and also rewrite `path` dependencies # to registry (e.g., crates.io) dependencies # # If you believe there's an error in this file please file an # issue against the rust-lang/cargo repository. If you're # editing this file be aware that the upstream Cargo.toml # will likely look very different (and much more reasonable) [package] edition = "2018" name = "httpdate" version = "1.0.1" authors = ["Pyfisch "] description = "HTTP date parsing and formatting" readme = "README.md" keywords = ["http", "date", "time", "simple", "timestamp"] license = "MIT/Apache-2.0" repository = "https://github.com/pyfisch/httpdate" httpdate-1.0.1/Cargo.toml.orig000064400000000000000000000004710000000000000143060ustar 00000000000000[package] name = "httpdate" version = "1.0.1" authors = ["Pyfisch "] license = "MIT/Apache-2.0" description = "HTTP date parsing and formatting" keywords = ["http", "date", "time", "simple", "timestamp"] readme = "README.md" repository = "https://github.com/pyfisch/httpdate" edition = "2018" httpdate-1.0.1/LICENSE-APACHE000064400000000000000000000240170000000000000133450ustar 00000000000000Apache License Version 2.0, January 2004 http://www.apache.org/licenses/ TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 1. 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We also recommend that a file or class name and description of purpose be included on the same "printed page" as the copyright notice for easier identification within third-party archives. Copyright [yyyy] [name of copyright owner] Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. httpdate-1.0.1/LICENSE-MIT000064400000000000000000000020330000000000000130470ustar 00000000000000Copyright (c) 2016 Pyfisch Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. httpdate-1.0.1/README.md000064400000000000000000000023710000000000000126770ustar 00000000000000# Date and time utils for HTTP. [![Build Status](https://travis-ci.org/pyfisch/httpdate.svg?branch=master)](https://travis-ci.org/pyfisch/httpdate) [![Crates.io](https://img.shields.io/crates/v/httpdate.svg)](https://crates.io/crates/httpdate) [![Documentation](https://docs.rs/httpdate/badge.svg)](https://docs.rs/httpdate) Multiple HTTP header fields store timestamps. For example a response created on May 15, 2015 may contain the header `Date: Fri, 15 May 2015 15:34:21 GMT`. Since the timestamp does not contain any timezone or leap second information it is equvivalent to writing 1431696861 Unix time. Rust’s `SystemTime` is used to store these timestamps. This crate provides two public functions: * `parse_http_date` to parse a HTTP datetime string to a system time * `fmt_http_date` to format a system time to a IMF-fixdate In addition it exposes the `HttpDate` type that can be used to parse and format timestamps. Convert a sytem time to `HttpDate` and vice versa. The `HttpType` (8 bytes) is smaller than `SystemTime` (16 bytes) and using the display impl avoids a temporary allocation. Read the [blog post](https://pyfisch.org/blog/http-datetime-handling/) to learn more. Fuzz it by installing *cargo-fuzz* and running `cargo fuzz run fuzz_target_1`. httpdate-1.0.1/src/date.rs000064400000000000000000000263020000000000000134720ustar 00000000000000use std::cmp; use std::fmt::{self, Display, Formatter}; use std::num::ParseIntError; use std::str::{from_utf8_unchecked, FromStr}; use std::time::{Duration, SystemTime, UNIX_EPOCH}; use crate::Error; /// HTTP timestamp type. /// /// Parse using `FromStr` impl. /// Format using the `Display` trait. /// Convert timestamp into/from `SytemTime` to use. /// Supports comparsion and sorting. #[derive(Copy, Clone, Debug, Eq, PartialEq, Hash)] pub struct HttpDate { /// 0...59 sec: u8, /// 0...59 min: u8, /// 0...23 hour: u8, /// 1...31 day: u8, /// 1...12 mon: u8, /// 1970...9999 year: u16, /// 1...7 wday: u8, } impl HttpDate { fn is_valid(&self) -> bool { self.sec < 60 && self.min < 60 && self.hour < 24 && self.day > 0 && self.day < 32 && self.mon > 0 && self.mon <= 12 && self.year >= 1970 && self.year <= 9999 && &HttpDate::from(SystemTime::from(*self)) == self } } impl From for HttpDate { fn from(v: SystemTime) -> HttpDate { let dur = v .duration_since(UNIX_EPOCH) .expect("all times should be after the epoch"); let secs_since_epoch = dur.as_secs(); if secs_since_epoch >= 253402300800 { // year 9999 panic!("date must be before year 9999"); } /* 2000-03-01 (mod 400 year, immediately after feb29 */ const LEAPOCH: i64 = 11017; const DAYS_PER_400Y: i64 = 365 * 400 + 97; const DAYS_PER_100Y: i64 = 365 * 100 + 24; const DAYS_PER_4Y: i64 = 365 * 4 + 1; let days = (secs_since_epoch / 86400) as i64 - LEAPOCH; let secs_of_day = secs_since_epoch % 86400; let mut qc_cycles = days / DAYS_PER_400Y; let mut remdays = days % DAYS_PER_400Y; if remdays < 0 { remdays += DAYS_PER_400Y; qc_cycles -= 1; } let mut c_cycles = remdays / DAYS_PER_100Y; if c_cycles == 4 { c_cycles -= 1; } remdays -= c_cycles * DAYS_PER_100Y; let mut q_cycles = remdays / DAYS_PER_4Y; if q_cycles == 25 { q_cycles -= 1; } remdays -= q_cycles * DAYS_PER_4Y; let mut remyears = remdays / 365; if remyears == 4 { remyears -= 1; } remdays -= remyears * 365; let mut year = 2000 + remyears + 4 * q_cycles + 100 * c_cycles + 400 * qc_cycles; let months = [31, 30, 31, 30, 31, 31, 30, 31, 30, 31, 31, 29]; let mut mon = 0; for mon_len in months.iter() { mon += 1; if remdays < *mon_len { break; } remdays -= *mon_len; } let mday = remdays + 1; let mon = if mon + 2 > 12 { year += 1; mon - 10 } else { mon + 2 }; let mut wday = (3 + days) % 7; if wday <= 0 { wday += 7 }; HttpDate { sec: (secs_of_day % 60) as u8, min: ((secs_of_day % 3600) / 60) as u8, hour: (secs_of_day / 3600) as u8, day: mday as u8, mon: mon as u8, year: year as u16, wday: wday as u8, } } } impl From for SystemTime { fn from(v: HttpDate) -> SystemTime { let leap_years = ((v.year - 1) - 1968) / 4 - ((v.year - 1) - 1900) / 100 + ((v.year - 1) - 1600) / 400; let mut ydays = match v.mon { 1 => 0, 2 => 31, 3 => 59, 4 => 90, 5 => 120, 6 => 151, 7 => 181, 8 => 212, 9 => 243, 10 => 273, 11 => 304, 12 => 334, _ => unreachable!(), } + v.day as u64 - 1; if is_leap_year(v.year) && v.mon > 2 { ydays += 1; } let days = (v.year as u64 - 1970) * 365 + leap_years as u64 + ydays; UNIX_EPOCH + Duration::from_secs( v.sec as u64 + v.min as u64 * 60 + v.hour as u64 * 3600 + days * 86400, ) } } impl FromStr for HttpDate { type Err = Error; fn from_str(s: &str) -> Result { if !s.is_ascii() { return Err(Error(())); } let x = s.trim().as_bytes(); let date = parse_imf_fixdate(x) .or_else(|_| parse_rfc850_date(x)) .or_else(|_| parse_asctime(x))?; if !date.is_valid() { return Err(Error(())); } Ok(date) } } impl Display for HttpDate { fn fmt(&self, f: &mut Formatter) -> fmt::Result { let wday = match self.wday { 1 => b"Mon", 2 => b"Tue", 3 => b"Wed", 4 => b"Thu", 5 => b"Fri", 6 => b"Sat", 7 => b"Sun", _ => unreachable!(), }; let mon = match self.mon { 1 => b"Jan", 2 => b"Feb", 3 => b"Mar", 4 => b"Apr", 5 => b"May", 6 => b"Jun", 7 => b"Jul", 8 => b"Aug", 9 => b"Sep", 10 => b"Oct", 11 => b"Nov", 12 => b"Dec", _ => unreachable!(), }; let mut buf: [u8; 29] = [ // Too long to write as: b"Thu, 01 Jan 1970 00:00:00 GMT" b' ', b' ', b' ', b',', b' ', b'0', b'0', b' ', b' ', b' ', b' ', b' ', b'0', b'0', b'0', b'0', b' ', b'0', b'0', b':', b'0', b'0', b':', b'0', b'0', b' ', b'G', b'M', b'T', ]; buf[0] = wday[0]; buf[1] = wday[1]; buf[2] = wday[2]; buf[5] = b'0' + (self.day / 10) as u8; buf[6] = b'0' + (self.day % 10) as u8; buf[8] = mon[0]; buf[9] = mon[1]; buf[10] = mon[2]; buf[12] = b'0' + (self.year / 1000) as u8; buf[13] = b'0' + (self.year / 100 % 10) as u8; buf[14] = b'0' + (self.year / 10 % 10) as u8; buf[15] = b'0' + (self.year % 10) as u8; buf[17] = b'0' + (self.hour / 10) as u8; buf[18] = b'0' + (self.hour % 10) as u8; buf[20] = b'0' + (self.min / 10) as u8; buf[21] = b'0' + (self.min % 10) as u8; buf[23] = b'0' + (self.sec / 10) as u8; buf[24] = b'0' + (self.sec % 10) as u8; f.write_str(unsafe { from_utf8_unchecked(&buf[..]) }) } } impl Ord for HttpDate { fn cmp(&self, other: &HttpDate) -> cmp::Ordering { SystemTime::from(*self).cmp(&SystemTime::from(*other)) } } impl PartialOrd for HttpDate { fn partial_cmp(&self, other: &HttpDate) -> Option { Some(self.cmp(other)) } } /// Convert &[u8] to &str with zero checks. /// /// For internal use only. /// Intended to be used with ASCII-only strings. fn conv(s: &[u8]) -> &str { unsafe { from_utf8_unchecked(s) } } fn cvt_err(_: ParseIntError) -> Error { Error(()) } fn parse_imf_fixdate(s: &[u8]) -> Result { // Example: `Sun, 06 Nov 1994 08:49:37 GMT` if s.len() != 29 || &s[25..] != b" GMT" || s[16] != b' ' || s[19] != b':' || s[22] != b':' { return Err(Error(())); } Ok(HttpDate { sec: conv(&s[23..25]).parse().map_err(cvt_err)?, min: conv(&s[20..22]).parse().map_err(cvt_err)?, hour: conv(&s[17..19]).parse().map_err(cvt_err)?, day: conv(&s[5..7]).parse().map_err(cvt_err)?, mon: match &s[7..12] { b" Jan " => 1, b" Feb " => 2, b" Mar " => 3, b" Apr " => 4, b" May " => 5, b" Jun " => 6, b" Jul " => 7, b" Aug " => 8, b" Sep " => 9, b" Oct " => 10, b" Nov " => 11, b" Dec " => 12, _ => return Err(Error(())), }, year: conv(&s[12..16]).parse().map_err(cvt_err)?, wday: match &s[..5] { b"Mon, " => 1, b"Tue, " => 2, b"Wed, " => 3, b"Thu, " => 4, b"Fri, " => 5, b"Sat, " => 6, b"Sun, " => 7, _ => return Err(Error(())), }, }) } fn parse_rfc850_date(s: &[u8]) -> Result { // Example: `Sunday, 06-Nov-94 08:49:37 GMT` if s.len() < 23 { return Err(Error(())); } fn wday<'a>(s: &'a [u8], wday: u8, name: &'static [u8]) -> Option<(u8, &'a [u8])> { if &s[0..name.len()] == name { return Some((wday, &s[name.len()..])); } None } let (wday, s) = wday(s, 1, b"Monday, ") .or_else(|| wday(s, 2, b"Tuesday, ")) .or_else(|| wday(s, 3, b"Wednesday, ")) .or_else(|| wday(s, 4, b"Thursday, ")) .or_else(|| wday(s, 5, b"Friday, ")) .or_else(|| wday(s, 6, b"Saturday, ")) .or_else(|| wday(s, 7, b"Sunday, ")) .ok_or(Error(()))?; if s.len() != 22 || s[12] != b':' || s[15] != b':' || &s[18..22] != b" GMT" { return Err(Error(())); } let mut year = conv(&s[7..9]).parse::().map_err(cvt_err)?; if year < 70 { year += 2000; } else { year += 1900; } Ok(HttpDate { sec: conv(&s[16..18]).parse().map_err(cvt_err)?, min: conv(&s[13..15]).parse().map_err(cvt_err)?, hour: conv(&s[10..12]).parse().map_err(cvt_err)?, day: conv(&s[0..2]).parse().map_err(cvt_err)?, mon: match &s[2..7] { b"-Jan-" => 1, b"-Feb-" => 2, b"-Mar-" => 3, b"-Apr-" => 4, b"-May-" => 5, b"-Jun-" => 6, b"-Jul-" => 7, b"-Aug-" => 8, b"-Sep-" => 9, b"-Oct-" => 10, b"-Nov-" => 11, b"-Dec-" => 12, _ => return Err(Error(())), }, year, wday, }) } fn parse_asctime(s: &[u8]) -> Result { // Example: `Sun Nov 6 08:49:37 1994` if s.len() != 24 || s[10] != b' ' || s[13] != b':' || s[16] != b':' || s[19] != b' ' { return Err(Error(())); } Ok(HttpDate { sec: conv(&s[17..19]).parse().map_err(cvt_err)?, min: conv(&s[14..16]).parse().map_err(cvt_err)?, hour: conv(&s[11..13]).parse().map_err(cvt_err)?, day: { let x = &s[8..10]; conv(if x[0] == b' ' { &x[1..2] } else { x }) .parse() .map_err(cvt_err)? }, mon: match &s[4..8] { b"Jan " => 1, b"Feb " => 2, b"Mar " => 3, b"Apr " => 4, b"May " => 5, b"Jun " => 6, b"Jul " => 7, b"Aug " => 8, b"Sep " => 9, b"Oct " => 10, b"Nov " => 11, b"Dec " => 12, _ => return Err(Error(())), }, year: conv(&s[20..24]).parse().map_err(cvt_err)?, wday: match &s[0..4] { b"Mon " => 1, b"Tue " => 2, b"Wed " => 3, b"Thu " => 4, b"Fri " => 5, b"Sat " => 6, b"Sun " => 7, _ => return Err(Error(())), }, }) } fn is_leap_year(y: u16) -> bool { y % 4 == 0 && (y % 100 != 0 || y % 400 == 0) } httpdate-1.0.1/src/lib.rs000064400000000000000000000123330000000000000133220ustar 00000000000000//! Date and time utils for HTTP. //! //! Multiple HTTP header fields store timestamps. //! For example a response created on May 15, 2015 may contain the header //! `Date: Fri, 15 May 2015 15:34:21 GMT`. Since the timestamp does not //! contain any timezone or leap second information it is equvivalent to //! writing 1431696861 Unix time. Rust’s `SystemTime` is used to store //! these timestamps. //! //! This crate provides two public functions: //! //! * `parse_http_date` to parse a HTTP datetime string to a system time //! * `fmt_http_date` to format a system time to a IMF-fixdate //! //! In addition it exposes the `HttpDate` type that can be used to parse //! and format timestamps. Convert a sytem time to `HttpDate` and vice versa. //! The `HttpType` (8 bytes) is smaller than `SystemTime` (16 bytes) and //! using the display impl avoids a temporary allocation. use std::error; use std::fmt::{self, Display, Formatter}; use std::io; use std::time::SystemTime; pub use date::HttpDate; mod date; /// An opaque error type for all parsing errors. #[derive(Debug)] pub struct Error(()); impl error::Error for Error {} impl Display for Error { fn fmt(&self, f: &mut Formatter) -> Result<(), fmt::Error> { f.write_str("string contains no or an invalid date") } } impl From for io::Error { fn from(e: Error) -> io::Error { io::Error::new(io::ErrorKind::Other, e) } } /// Parse a date from an HTTP header field. /// /// Supports the preferred IMF-fixdate and the legacy RFC 805 and /// ascdate formats. Two digit years are mapped to dates between /// 1970 and 2069. pub fn parse_http_date(s: &str) -> Result { s.parse::().map(|d| d.into()) } /// Format a date to be used in a HTTP header field. /// /// Dates are formatted as IMF-fixdate: `Fri, 15 May 2015 15:34:21 GMT`. pub fn fmt_http_date(d: SystemTime) -> String { format!("{}", HttpDate::from(d)) } #[cfg(test)] mod tests { use std::str; use std::time::{Duration, UNIX_EPOCH}; use super::{fmt_http_date, parse_http_date, HttpDate}; #[test] fn test_rfc_example() { let d = UNIX_EPOCH + Duration::from_secs(784111777); assert_eq!( d, parse_http_date("Sun, 06 Nov 1994 08:49:37 GMT").expect("#1") ); assert_eq!( d, parse_http_date("Sunday, 06-Nov-94 08:49:37 GMT").expect("#2") ); assert_eq!(d, parse_http_date("Sun Nov 6 08:49:37 1994").expect("#3")); } #[test] fn test2() { let d = UNIX_EPOCH + Duration::from_secs(1475419451); assert_eq!( d, parse_http_date("Sun, 02 Oct 2016 14:44:11 GMT").expect("#1") ); assert!(parse_http_date("Sun Nov 10 08:00:00 1000").is_err()); assert!(parse_http_date("Sun Nov 10 08*00:00 2000").is_err()); assert!(parse_http_date("Sunday, 06-Nov-94 08+49:37 GMT").is_err()); } #[test] fn test3() { let mut d = UNIX_EPOCH; assert_eq!(d, parse_http_date("Thu, 01 Jan 1970 00:00:00 GMT").unwrap()); d += Duration::from_secs(3600); assert_eq!(d, parse_http_date("Thu, 01 Jan 1970 01:00:00 GMT").unwrap()); d += Duration::from_secs(86400); assert_eq!(d, parse_http_date("Fri, 02 Jan 1970 01:00:00 GMT").unwrap()); d += Duration::from_secs(2592000); assert_eq!(d, parse_http_date("Sun, 01 Feb 1970 01:00:00 GMT").unwrap()); d += Duration::from_secs(2592000); assert_eq!(d, parse_http_date("Tue, 03 Mar 1970 01:00:00 GMT").unwrap()); d += Duration::from_secs(31536005); assert_eq!(d, parse_http_date("Wed, 03 Mar 1971 01:00:05 GMT").unwrap()); d += Duration::from_secs(15552000); assert_eq!(d, parse_http_date("Mon, 30 Aug 1971 01:00:05 GMT").unwrap()); d += Duration::from_secs(6048000); assert_eq!(d, parse_http_date("Mon, 08 Nov 1971 01:00:05 GMT").unwrap()); d += Duration::from_secs(864000000); assert_eq!(d, parse_http_date("Fri, 26 Mar 1999 01:00:05 GMT").unwrap()); } #[test] fn test_fmt() { let d = UNIX_EPOCH; assert_eq!(fmt_http_date(d), "Thu, 01 Jan 1970 00:00:00 GMT"); let d = UNIX_EPOCH + Duration::from_secs(1475419451); assert_eq!(fmt_http_date(d), "Sun, 02 Oct 2016 14:44:11 GMT"); } #[allow(dead_code)] fn testcase(data: &[u8]) { if let Ok(s) = str::from_utf8(data) { println!("{:?}", s); if let Ok(d) = parse_http_date(s) { let o = fmt_http_date(d); assert!(!o.is_empty()); } } } #[test] fn size_of() { assert_eq!(::std::mem::size_of::(), 8); } #[test] fn test_date_comparison() { let a = UNIX_EPOCH + Duration::from_secs(784111777); let b = a + Duration::from_secs(30); assert!(a < b); let a_date: HttpDate = a.into(); let b_date: HttpDate = b.into(); assert!(a_date < b_date); assert_eq!(a_date.cmp(&b_date), ::std::cmp::Ordering::Less) } #[test] fn test_parse_bad_date() { // 1994-11-07 is actually a Monday let parsed = "Sun, 07 Nov 1994 08:48:37 GMT".parse::(); assert!(parsed.is_err()) } }