| <!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="Source of the Rust file `/root/.cargo/git/checkouts/yasna.rs-156132176fc4750e/5680982/src/writer/mod.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>mod.rs - source</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceSerif4-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../FiraSans-Regular.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../FiraSans-Medium.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceCodePro-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceSerif4-Bold.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../../SourceCodePro-Semibold.ttf.woff2"><link rel="stylesheet" href="../../../normalize.css"><link rel="stylesheet" href="../../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" href="../../../ayu.css" disabled><link rel="stylesheet" href="../../../dark.css" disabled><link rel="stylesheet" href="../../../light.css" id="themeStyle"><script id="default-settings" ></script><script src="../../../storage.js"></script><script defer src="../../../source-script.js"></script><script defer src="../../../source-files.js"></script><script defer src="../../../main.js"></script><noscript><link rel="stylesheet" href="../../../noscript.css"></noscript><link rel="alternate icon" type="image/png" href="../../../favicon-16x16.png"><link rel="alternate icon" type="image/png" href="../../../favicon-32x32.png"><link rel="icon" type="image/svg+xml" href="../../../favicon.svg"></head><body class="rustdoc source"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="sidebar"><a class="sidebar-logo" href="../../../yasna/index.html"><div class="logo-container"><img class="rust-logo" src="../../../rust-logo.svg" alt="logo"></div></a></nav><main><div class="width-limiter"><nav class="sub"><a class="sub-logo-container" href="../../../yasna/index.html"><img class="rust-logo" src="../../../rust-logo.svg" alt="logo"></a><form class="search-form"><div class="search-container"><span></span><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><div id="help-button" title="help" tabindex="-1"><a href="../../../help.html">?</a></div><div id="settings-menu" tabindex="-1"><a href="../../../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../../../wheel.svg"></a></div></div></form></nav><section id="main-content" class="content"><div class="example-wrap"><pre class="src-line-numbers"><span id="1">1</span> |
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| </pre><pre class="rust"><code><span class="comment">// Copyright 2016 Masaki Hara |
| // Copyright 2019 Fortanix, Inc. |
| // |
| // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or |
| // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license |
| // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your |
| // option. This file may not be copied, modified, or distributed |
| // except according to those terms. |
| |
| </span><span class="attribute">#![forbid(missing_docs)] |
| |
| #[cfg(feature = <span class="string">"num-bigint"</span>)] |
| </span><span class="kw">use </span>num_bigint::{BigUint, BigInt}; |
| <span class="attribute">#[cfg(feature = <span class="string">"bit-vec"</span>)] |
| </span><span class="kw">use </span>bit_vec::BitVec; |
| |
| <span class="kw">use super</span>::{PCBit, Tag}; |
| <span class="kw">use </span><span class="kw">super</span>::tags::{TAG_BOOLEAN,TAG_INTEGER,TAG_OCTETSTRING}; |
| <span class="kw">use </span><span class="kw">super</span>::tags::{TAG_NULL,TAG_OID,TAG_UTF8STRING,TAG_SEQUENCE,TAG_SET,TAG_ENUM,TAG_IA5STRING,TAG_BMPSTRING}; |
| <span class="kw">use </span><span class="kw">super</span>::tags::{TAG_NUMERICSTRING,TAG_PRINTABLESTRING,TAG_VISIBLESTRING}; |
| <span class="kw">use </span><span class="kw">super</span>::models::{ObjectIdentifier,TaggedDerValue}; |
| <span class="attribute">#[cfg(feature = <span class="string">"chrono"</span>)] |
| </span><span class="kw">use </span><span class="kw">super</span>::models::{UTCTime,GeneralizedTime}; |
| |
| <span class="kw">use </span>std::ascii::AsciiExt; |
| |
| <span class="doccomment">/// Constructs DER-encoded data as `Vec<u8>`. |
| /// |
| /// This function uses the loan pattern: `callback` is called back with |
| /// a [`DERWriter`][derwriter], to which the ASN.1 value is written. |
| /// |
| /// [derwriter]: struct.DERWriter.html |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// use yasna; |
| /// let der = yasna::construct_der(|writer| { |
| /// writer.write_sequence(|writer| { |
| /// writer.next().write_i64(10); |
| /// writer.next().write_bool(true); |
| /// }) |
| /// }); |
| /// assert_eq!(der, vec![48, 6, 2, 1, 10, 1, 1, 255]); |
| /// ``` |
| </span><span class="kw">pub fn </span>construct_der<F>(callback: F) -> Vec<u8> |
| <span class="kw">where </span>F: FnOnce(DERWriter) { |
| <span class="kw">let </span><span class="kw-2">mut </span>buf = Vec::new(); |
| { |
| <span class="kw">let </span><span class="kw-2">mut </span>writer = DERWriterSeq { |
| buf: <span class="kw-2">&mut </span>buf, |
| }; |
| callback(writer.next()); |
| } |
| <span class="kw">return </span>buf; |
| } |
| |
| <span class="doccomment">/// Tries to construct DER-encoded data as `Vec<u8>`. |
| /// |
| /// Same as [`construct_der`][construct_der], only that it allows |
| /// returning an error from the passed closure. |
| /// |
| /// [construct_der]: fn.construct_der.html |
| /// |
| /// This function uses the loan pattern: `callback` is called back with |
| /// a [`DERWriterSeq`][derwriterseq], to which the ASN.1 values are written. |
| /// |
| /// [derwriterseq]: struct.DERWriterSeq.html |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// use yasna; |
| /// let res_ok = yasna::try_construct_der::<_, ()>(|writer| { |
| /// writer.write_sequence(|writer| { |
| /// writer.next().write_i64(10); |
| /// writer.next().write_bool(true); |
| /// }); |
| /// Ok(()) |
| /// }); |
| /// let res_err = yasna::try_construct_der::<_, &str>(|writer| { |
| /// writer.write_sequence(|writer| { |
| /// writer.next().write_i64(10); |
| /// writer.next().write_bool(true); |
| /// return Err("some error here"); |
| /// })?; |
| /// Ok(()) |
| /// }); |
| /// assert_eq!(res_ok, Ok(vec![48, 6, 2, 1, 10, 1, 1, 255])); |
| /// assert_eq!(res_err, Err("some error here")); |
| /// ``` |
| </span><span class="kw">pub fn </span>try_construct_der<F, E>(callback: F) -> <span class="prelude-ty">Result</span><Vec<u8>, E> |
| <span class="kw">where </span>F: FnOnce(DERWriter) -> <span class="prelude-ty">Result</span><(), E> { |
| <span class="kw">let </span><span class="kw-2">mut </span>buf = Vec::new(); |
| { |
| <span class="kw">let </span><span class="kw-2">mut </span>writer = DERWriterSeq { |
| buf: <span class="kw-2">&mut </span>buf, |
| }; |
| callback(writer.next())<span class="question-mark">?</span>; |
| } |
| <span class="kw">return </span><span class="prelude-val">Ok</span>(buf); |
| } |
| |
| <span class="doccomment">/// Constructs DER-encoded sequence of data as `Vec<u8>`. |
| /// |
| /// This is similar to [`construct_der`][construct_der], but this function |
| /// accepts more than one ASN.1 values. |
| /// |
| /// [construct_der]: fn.construct_der.html |
| /// |
| /// This function uses the loan pattern: `callback` is called back with |
| /// a [`DERWriterSeq`][derwriterseq], to which the ASN.1 values are written. |
| /// |
| /// [derwriterseq]: struct.DERWriterSeq.html |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// use yasna; |
| /// let der = yasna::construct_der_seq(|writer| { |
| /// writer.next().write_i64(10); |
| /// writer.next().write_bool(true); |
| /// }); |
| /// assert_eq!(der, vec![2, 1, 10, 1, 1, 255]); |
| /// ``` |
| </span><span class="kw">pub fn </span>construct_der_seq<F>(callback: F) -> Vec<u8> |
| <span class="kw">where </span>F: FnOnce(<span class="kw-2">&mut </span>DERWriterSeq) { |
| <span class="kw">let </span><span class="kw-2">mut </span>buf = Vec::new(); |
| { |
| <span class="kw">let </span><span class="kw-2">mut </span>writer = DERWriterSeq { |
| buf: <span class="kw-2">&mut </span>buf, |
| }; |
| callback(<span class="kw-2">&mut </span>writer); |
| } |
| <span class="kw">return </span>buf; |
| } |
| |
| <span class="doccomment">/// Tries to construct a DER-encoded sequence of data as `Vec<u8>`. |
| /// |
| /// Same as [`construct_der_seq`][construct_der_seq], only that it allows |
| /// returning an error from the passed closure. |
| /// |
| /// [construct_der_seq]: fn.construct_der_seq.html |
| /// |
| /// This function uses the loan pattern: `callback` is called back with |
| /// a [`DERWriterSeq`][derwriterseq], to which the ASN.1 values are written. |
| /// |
| /// [derwriterseq]: struct.DERWriterSeq.html |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// use yasna; |
| /// let res_ok = yasna::try_construct_der_seq::<_, ()>(|writer| { |
| /// writer.next().write_i64(10); |
| /// writer.next().write_bool(true); |
| /// Ok(()) |
| /// }); |
| /// let res_err = yasna::try_construct_der_seq::<_, &str>(|writer| { |
| /// return Err("some error here"); |
| /// }); |
| /// assert_eq!(res_ok, Ok(vec![2, 1, 10, 1, 1, 255])); |
| /// assert_eq!(res_err, Err("some error here")); |
| /// ``` |
| </span><span class="kw">pub fn </span>try_construct_der_seq<F, E>(callback: F) -> <span class="prelude-ty">Result</span><Vec<u8> , E> |
| <span class="kw">where </span>F: FnOnce(<span class="kw-2">&mut </span>DERWriterSeq) -> <span class="prelude-ty">Result</span><(), E> { |
| <span class="kw">let </span><span class="kw-2">mut </span>buf = Vec::new(); |
| { |
| <span class="kw">let </span><span class="kw-2">mut </span>writer = DERWriterSeq { |
| buf: <span class="kw-2">&mut </span>buf, |
| }; |
| callback(<span class="kw-2">&mut </span>writer)<span class="question-mark">?</span>; |
| } |
| <span class="kw">return </span><span class="prelude-val">Ok</span>(buf); |
| } |
| |
| <span class="doccomment">/// A writer object that accepts an ASN.1 value. |
| /// |
| /// The two main sources of `DERWriterSeq` are: |
| /// |
| /// - The [`construct_der`][construct_der] function, the starting point of |
| /// DER serialization. |
| /// - The `next` method of [`DERWriterSeq`][derwriterseq]. |
| /// |
| /// [construct_der]: fn.construct_der.html |
| /// [derwriterseq]: struct.DERWriterSeq.html |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// use yasna; |
| /// let der = yasna::construct_der(|writer| { |
| /// writer.write_i64(10) |
| /// }); |
| /// assert_eq!(der, vec![2, 1, 10]); |
| /// ``` |
| </span><span class="attribute">#[derive(Debug)] |
| </span><span class="kw">pub struct </span>DERWriter<<span class="lifetime">'a</span>> { |
| <span class="kw">pub </span>buf: <span class="kw-2">&</span><span class="lifetime">'a </span><span class="kw-2">mut </span>Vec<u8>, |
| implicit_tag: <span class="prelude-ty">Option</span><Tag>, |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>> DERWriter<<span class="lifetime">'a</span>> { |
| <span class="kw">fn </span>from_buf(buf: <span class="kw-2">&</span><span class="lifetime">'a </span><span class="kw-2">mut </span>Vec<u8>) -> <span class="self">Self </span>{ |
| <span class="kw">return </span>DERWriter { |
| buf, |
| implicit_tag: <span class="prelude-val">None</span>, |
| } |
| } |
| <span class="doccomment">/// Writes BER identifier (tag + primitive/constructed) octets. |
| </span><span class="kw">fn </span>write_identifier(<span class="kw-2">&mut </span><span class="self">self</span>, tag: Tag, pc: PCBit) { |
| <span class="kw">let </span>tag = <span class="kw">if let </span><span class="prelude-val">Some</span>(tag) = <span class="self">self</span>.implicit_tag { tag } <span class="kw">else </span>{ tag }; |
| <span class="self">self</span>.implicit_tag = <span class="prelude-val">None</span>; |
| <span class="kw">let </span>classid = tag.tag_class <span class="kw">as </span>u8; |
| <span class="kw">let </span>pcid = pc <span class="kw">as </span>u8; |
| <span class="kw">if </span>tag.tag_number < <span class="number">31 </span>{ |
| <span class="self">self</span>.buf.push( |
| (classid << <span class="number">6</span>) | (pcid << <span class="number">5</span>) | (tag.tag_number <span class="kw">as </span>u8)); |
| <span class="kw">return</span>; |
| } |
| <span class="self">self</span>.buf.push((classid << <span class="number">6</span>) | (pcid << <span class="number">5</span>) | <span class="number">31</span>); |
| <span class="kw">let </span><span class="kw-2">mut </span>shiftnum = <span class="number">63</span>; <span class="comment">// ceil(64 / 7) * 7 - 7 |
| </span><span class="kw">while </span>(tag.tag_number >> shiftnum) == <span class="number">0 </span>{ |
| shiftnum -= <span class="number">7</span>; |
| } |
| <span class="kw">while </span>shiftnum > <span class="number">0 </span>{ |
| <span class="self">self</span>.buf.push(<span class="number">128 </span>| (((tag.tag_number >> shiftnum) & <span class="number">127</span>) <span class="kw">as </span>u8)); |
| shiftnum -= <span class="number">7</span>; |
| } |
| <span class="self">self</span>.buf.push((tag.tag_number & <span class="number">127</span>) <span class="kw">as </span>u8); |
| } |
| |
| <span class="doccomment">/// Writes BER length octets. |
| </span><span class="kw">fn </span>write_length(<span class="kw-2">&mut </span><span class="self">self</span>, length: usize) { |
| <span class="kw">let </span>length = length <span class="kw">as </span>u64; |
| <span class="kw">if </span>length < <span class="number">128 </span>{ |
| <span class="self">self</span>.buf.push(length <span class="kw">as </span>u8); |
| <span class="kw">return</span>; |
| } |
| <span class="kw">let </span><span class="kw-2">mut </span>shiftnum = <span class="number">56</span>; <span class="comment">// ceil(64 / 8) * 8 - 8 |
| </span><span class="kw">while </span>(length >> shiftnum) == <span class="number">0 </span>{ |
| shiftnum -= <span class="number">8</span>; |
| } |
| <span class="self">self</span>.buf.push(<span class="number">128 </span>| ((shiftnum / <span class="number">8 </span>+ <span class="number">1</span>) <span class="kw">as </span>u8)); |
| <span class="kw">loop </span>{ |
| <span class="self">self</span>.buf.push((length >> shiftnum) <span class="kw">as </span>u8); |
| <span class="kw">if </span>shiftnum == <span class="number">0 </span>{ |
| <span class="kw">break</span>; |
| } |
| shiftnum -= <span class="number">8</span>; |
| } |
| } |
| |
| <span class="doccomment">/// Deals with unknown length procedures. |
| /// This function first marks the current position and |
| /// allocates 3 bytes. Then it calls back `callback`. |
| /// It then calculates the length and moves the written data |
| /// to the actual position. Finally, it writes the length. |
| </span><span class="kw">fn </span>with_length<T, F>(<span class="kw-2">&mut </span><span class="self">self</span>, callback: F) -> T |
| <span class="kw">where </span>F: FnOnce(<span class="kw-2">&mut </span><span class="self">Self</span>) -> T { |
| <span class="kw">let </span>expected_length_length = <span class="number">3</span>; |
| <span class="kw">for _ in </span><span class="number">0</span>..<span class="number">3 </span>{ |
| <span class="self">self</span>.buf.push(<span class="number">255</span>); |
| } |
| <span class="kw">let </span>start_pos = <span class="self">self</span>.buf.len(); |
| <span class="kw">let </span>result = callback(<span class="self">self</span>); |
| <span class="kw">let </span>length = (<span class="self">self</span>.buf.len() - start_pos) <span class="kw">as </span>u64; |
| <span class="kw">let </span>length_length; |
| <span class="kw">let </span><span class="kw-2">mut </span>shiftnum = <span class="number">56</span>; <span class="comment">// ceil(64 / 8) * 8 - 8 |
| </span><span class="kw">if </span>length < <span class="number">128 </span>{ |
| length_length = <span class="number">1</span>; |
| } <span class="kw">else </span>{ |
| <span class="kw">while </span>(length >> shiftnum) == <span class="number">0 </span>{ |
| shiftnum -= <span class="number">8</span>; |
| } |
| length_length = shiftnum / <span class="number">8 </span>+ <span class="number">2</span>; |
| } |
| <span class="kw">let </span>new_start_pos; |
| <span class="kw">if </span>length_length < expected_length_length { |
| <span class="kw">let </span>diff = expected_length_length - length_length; |
| new_start_pos = start_pos - diff; |
| <span class="self">self</span>.buf.drain(new_start_pos .. start_pos); |
| } <span class="kw">else if </span>length_length > expected_length_length { |
| <span class="kw">let </span>diff = length_length - expected_length_length; |
| new_start_pos = start_pos + diff; |
| <span class="kw">for _ in </span><span class="number">0</span>..diff { <span class="self">self</span>.buf.insert(start_pos, <span class="number">0</span>); } |
| } <span class="kw">else </span>{ |
| new_start_pos = start_pos; |
| } |
| <span class="kw">let </span><span class="kw-2">mut </span>idx = new_start_pos - length_length; |
| <span class="kw">if </span>length < <span class="number">128 </span>{ |
| <span class="self">self</span>.buf[idx] = length <span class="kw">as </span>u8; |
| } <span class="kw">else </span>{ |
| <span class="self">self</span>.buf[idx] = <span class="number">128 </span>| ((shiftnum / <span class="number">8 </span>+ <span class="number">1</span>) <span class="kw">as </span>u8); |
| idx += <span class="number">1</span>; |
| <span class="kw">loop </span>{ |
| <span class="self">self</span>.buf[idx] = (length >> shiftnum) <span class="kw">as </span>u8; |
| idx += <span class="number">1</span>; |
| <span class="kw">if </span>shiftnum == <span class="number">0 </span>{ |
| <span class="kw">break</span>; |
| } |
| shiftnum -= <span class="number">8</span>; |
| } |
| } |
| <span class="kw">return </span>result; |
| } |
| |
| <span class="doccomment">/// Writes `bool` as an ASN.1 BOOLEAN value. |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// use yasna; |
| /// let der = yasna::construct_der(|writer| { |
| /// writer.write_bool(true) |
| /// }); |
| /// assert_eq!(der, vec![1, 1, 255]); |
| /// ``` |
| </span><span class="kw">pub fn </span>write_bool(<span class="kw-2">mut </span><span class="self">self</span>, val: bool) { |
| <span class="self">self</span>.write_identifier(TAG_BOOLEAN, PCBit::Primitive); |
| <span class="self">self</span>.write_length(<span class="number">1</span>); |
| <span class="self">self</span>.buf.push(<span class="kw">if </span>val { <span class="number">255 </span>} <span class="kw">else </span>{ <span class="number">0 </span>}); |
| } |
| |
| <span class="kw">fn </span>write_integer(<span class="kw-2">mut </span><span class="self">self</span>, tag: Tag, val: i64) { |
| <span class="kw">let </span><span class="kw-2">mut </span>shiftnum = <span class="number">56</span>; |
| <span class="kw">while </span>shiftnum > <span class="number">0 </span>&& |
| (val >> (shiftnum-<span class="number">1</span>) == <span class="number">0 </span>|| val >> (shiftnum-<span class="number">1</span>) == -<span class="number">1</span>) { |
| shiftnum -= <span class="number">8</span>; |
| } |
| <span class="self">self</span>.write_identifier(tag, PCBit::Primitive); |
| <span class="self">self</span>.write_length(shiftnum / <span class="number">8 </span>+ <span class="number">1</span>); |
| <span class="kw">loop </span>{ |
| <span class="self">self</span>.buf.push((val >> shiftnum) <span class="kw">as </span>u8); |
| <span class="kw">if </span>shiftnum == <span class="number">0 </span>{ |
| <span class="kw">break</span>; |
| } |
| shiftnum -= <span class="number">8</span>; |
| } |
| } |
| |
| <span class="doccomment">/// Writes `i64` as an ASN.1 ENUMERATED value. |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// use yasna; |
| /// let der = yasna::construct_der(|writer| { |
| /// writer.write_enum(2) |
| /// }); |
| /// assert_eq!(der, vec![10, 1, 2]); |
| /// ``` |
| </span><span class="kw">pub fn </span>write_enum(<span class="self">self</span>, val: i64) { |
| <span class="self">self</span>.write_integer(TAG_ENUM, val); |
| } |
| |
| <span class="doccomment">/// Writes `i64` as an ASN.1 INTEGER value. |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// use yasna; |
| /// let der = yasna::construct_der(|writer| { |
| /// writer.write_i64(1234567890) |
| /// }); |
| /// assert_eq!(der, vec![2, 4, 73, 150, 2, 210]); |
| /// ``` |
| </span><span class="kw">pub fn </span>write_i64(<span class="self">self</span>, val: i64) { |
| <span class="self">self</span>.write_integer(TAG_INTEGER, val); |
| } |
| |
| <span class="doccomment">/// Writes `u64` as an ASN.1 INTEGER value. |
| </span><span class="kw">pub fn </span>write_u64(<span class="kw-2">mut </span><span class="self">self</span>, val: u64) { |
| <span class="kw">let </span><span class="kw-2">mut </span>shiftnum = <span class="number">64</span>; |
| <span class="kw">while </span>shiftnum > <span class="number">0 </span>&& val >> (shiftnum-<span class="number">1</span>) == <span class="number">0 </span>{ |
| shiftnum -= <span class="number">8</span>; |
| } |
| <span class="self">self</span>.write_identifier(TAG_INTEGER, PCBit::Primitive); |
| <span class="self">self</span>.write_length(shiftnum / <span class="number">8 </span>+ <span class="number">1</span>); |
| <span class="kw">if </span>shiftnum == <span class="number">64 </span>{ |
| <span class="self">self</span>.buf.push(<span class="number">0</span>); |
| shiftnum -= <span class="number">8</span>; |
| } |
| <span class="kw">loop </span>{ |
| <span class="self">self</span>.buf.push((val >> shiftnum) <span class="kw">as </span>u8); |
| <span class="kw">if </span>shiftnum == <span class="number">0 </span>{ |
| <span class="kw">break</span>; |
| } |
| shiftnum -= <span class="number">8</span>; |
| } |
| } |
| |
| <span class="doccomment">/// Writes `i32` as an ASN.1 INTEGER value. |
| </span><span class="kw">pub fn </span>write_i32(<span class="self">self</span>, val: i32) { |
| <span class="self">self</span>.write_i64(val <span class="kw">as </span>i64) |
| } |
| |
| <span class="doccomment">/// Writes `u32` as an ASN.1 INTEGER value. |
| </span><span class="kw">pub fn </span>write_u32(<span class="self">self</span>, val: u32) { |
| <span class="self">self</span>.write_i64(val <span class="kw">as </span>i64) |
| } |
| |
| <span class="doccomment">/// Writes `i16` as an ASN.1 INTEGER value. |
| </span><span class="kw">pub fn </span>write_i16(<span class="self">self</span>, val: i16) { |
| <span class="self">self</span>.write_i64(val <span class="kw">as </span>i64) |
| } |
| |
| <span class="doccomment">/// Writes `u16` as an ASN.1 INTEGER value. |
| </span><span class="kw">pub fn </span>write_u16(<span class="self">self</span>, val: u16) { |
| <span class="self">self</span>.write_i64(val <span class="kw">as </span>i64) |
| } |
| |
| <span class="doccomment">/// Writes `i8` as an ASN.1 INTEGER value. |
| </span><span class="kw">pub fn </span>write_i8(<span class="self">self</span>, val: i8) { |
| <span class="self">self</span>.write_i64(val <span class="kw">as </span>i64) |
| } |
| |
| <span class="doccomment">/// Writes `u8` as an ASN.1 INTEGER value. |
| </span><span class="kw">pub fn </span>write_u8(<span class="self">self</span>, val: u8) { |
| <span class="self">self</span>.write_i64(val <span class="kw">as </span>i64) |
| } |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"num-bigint"</span>)] |
| </span><span class="doccomment">/// Writes `BigInt` as an ASN.1 INTEGER value. |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// # extern crate num_bigint; |
| /// # extern crate yasna; |
| /// # fn main() { |
| /// use yasna; |
| /// use num_bigint::BigInt; |
| /// let der = yasna::construct_der(|writer| { |
| /// writer.write_bigint( |
| /// &BigInt::parse_bytes(b"1234567890", 10).unwrap()) |
| /// }); |
| /// assert_eq!(der, vec![2, 4, 73, 150, 2, 210]); |
| /// # } |
| /// ``` |
| /// |
| /// # Features |
| /// |
| /// This method is enabled by `num` feature. |
| /// |
| /// ```toml |
| /// [dependencies] |
| /// yasna = { version = "*", features = ["num-bigint"] } |
| /// ``` |
| </span><span class="kw">pub fn </span>write_bigint(<span class="kw-2">mut </span><span class="self">self</span>, val: <span class="kw-2">&</span>BigInt) { |
| <span class="kw">use </span>num_bigint::Sign; |
| <span class="self">self</span>.write_identifier(TAG_INTEGER, PCBit::Primitive); |
| <span class="kw">let </span>(sign, <span class="kw-2">mut </span>bytes) = val.to_bytes_le(); |
| <span class="kw">match </span>sign { |
| Sign::NoSign => { |
| <span class="self">self</span>.write_length(<span class="number">1</span>); |
| <span class="self">self</span>.buf.push(<span class="number">0</span>); |
| }, |
| Sign::Plus => { |
| <span class="kw">let </span>byteslen = bytes.len(); |
| <span class="macro">debug_assert!</span>(bytes[byteslen-<span class="number">1</span>] != <span class="number">0</span>); |
| <span class="kw">if </span>bytes[byteslen-<span class="number">1</span>] >= <span class="number">128 </span>{ |
| <span class="self">self</span>.write_length(byteslen+<span class="number">1</span>); |
| <span class="self">self</span>.buf.push(<span class="number">0</span>); |
| } <span class="kw">else </span>{ |
| <span class="self">self</span>.write_length(byteslen); |
| } |
| bytes.reverse(); |
| <span class="self">self</span>.buf.extend_from_slice(<span class="kw-2">&</span>bytes); |
| <span class="kw">return</span>; |
| }, |
| Sign::Minus => { |
| <span class="kw">let </span>byteslen = bytes.len(); |
| <span class="macro">debug_assert!</span>(bytes[byteslen-<span class="number">1</span>] != <span class="number">0</span>); |
| <span class="kw">let </span><span class="kw-2">mut </span>carry : usize = <span class="number">1</span>; |
| <span class="kw">for </span>b <span class="kw">in </span>bytes.iter_mut() { |
| <span class="kw">let </span>bval = <span class="number">255 </span>- (<span class="kw-2">*</span>b <span class="kw">as </span>usize); |
| <span class="kw-2">*</span>b = (bval + carry) <span class="kw">as </span>u8; |
| carry = (bval + carry) >> <span class="number">8</span>; |
| } |
| <span class="kw">if </span>bytes[byteslen-<span class="number">1</span>] < <span class="number">128 </span>{ |
| <span class="self">self</span>.write_length(byteslen+<span class="number">1</span>); |
| <span class="self">self</span>.buf.push(<span class="number">255</span>); |
| } <span class="kw">else </span>{ |
| <span class="self">self</span>.write_length(byteslen); |
| } |
| bytes.reverse(); |
| <span class="self">self</span>.buf.extend_from_slice(<span class="kw-2">&</span>bytes); |
| <span class="kw">return</span>; |
| } |
| }; |
| } |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"num-bigint"</span>)] |
| </span><span class="doccomment">/// Writes `BigUint` as an ASN.1 INTEGER value. |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// # extern crate num_bigint; |
| /// # extern crate yasna; |
| /// # fn main() { |
| /// use yasna; |
| /// use num_bigint::BigUint; |
| /// let der = yasna::construct_der(|writer| { |
| /// writer.write_biguint( |
| /// &BigUint::parse_bytes(b"1234567890", 10).unwrap()) |
| /// }); |
| /// assert_eq!(der, vec![2, 4, 73, 150, 2, 210]); |
| /// # } |
| /// ``` |
| /// |
| /// # Features |
| /// |
| /// This method is enabled by `num` feature. |
| /// |
| /// ```toml |
| /// [dependencies] |
| /// yasna = { version = "*", features = ["num-bigint"] } |
| /// ``` |
| </span><span class="kw">pub fn </span>write_biguint(<span class="kw-2">mut </span><span class="self">self</span>, val: <span class="kw-2">&</span>BigUint) { |
| <span class="self">self</span>.write_identifier(TAG_INTEGER, PCBit::Primitive); |
| <span class="kw">let </span><span class="kw-2">mut </span>bytes = val.to_bytes_le(); |
| <span class="kw">if </span><span class="kw-2">&</span>bytes == <span class="kw-2">&</span>[<span class="number">0</span>] { |
| <span class="self">self</span>.write_length(<span class="number">1</span>); |
| <span class="self">self</span>.buf.push(<span class="number">0</span>); |
| <span class="kw">return</span>; |
| } |
| <span class="kw">let </span>byteslen = bytes.len(); |
| <span class="macro">debug_assert!</span>(bytes[byteslen-<span class="number">1</span>] != <span class="number">0</span>); |
| <span class="kw">if </span>bytes[byteslen-<span class="number">1</span>] >= <span class="number">128 </span>{ |
| <span class="self">self</span>.write_length(byteslen+<span class="number">1</span>); |
| <span class="self">self</span>.buf.push(<span class="number">0</span>); |
| } <span class="kw">else </span>{ |
| <span class="self">self</span>.write_length(byteslen); |
| } |
| bytes.reverse(); |
| <span class="self">self</span>.buf.extend_from_slice(<span class="kw-2">&</span>bytes); |
| } |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"bit-vec"</span>)] |
| </span><span class="doccomment">/// Writes `BitVec` as an ASN.1 BITSTRING value. |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// # extern crate bit_vec; |
| /// # extern crate yasna; |
| /// # fn main() { |
| /// use yasna; |
| /// use bit_vec::BitVec; |
| /// let der = yasna::construct_der(|writer| { |
| /// writer.write_bitvec(& |
| /// [1, 1, 0, 0, 1, 1, 1, 0, 1, 1, 0, 1, 0, 1, 0, 1, |
| /// 0, 1, 1, 1, 0, 1, 0, 0, 0, 0, 0, 1, 1] |
| /// .iter().map(|&i| i != 0).collect()) |
| /// }); |
| /// assert_eq!(&der, &[3, 5, 3, 206, 213, 116, 24]); |
| /// # } |
| /// ``` |
| /// |
| /// # Features |
| /// |
| /// This method is enabled by `bit-vec` feature. |
| /// |
| /// ```toml |
| /// [dependencies] |
| /// yasna = { version = "*", features = ["bit-vec"] } |
| /// ``` |
| </span><span class="kw">pub fn </span>write_bitvec(<span class="self">self</span>, bitvec: <span class="kw-2">&</span>BitVec) { |
| <span class="kw">let </span>len = bitvec.len(); |
| <span class="kw">let </span>bytes = bitvec.to_bytes(); |
| <span class="self">self</span>.write_bitvec_bytes(<span class="kw-2">&</span>bytes, len); |
| } |
| |
| <span class="doccomment">/// Writes `&[u8]` and `usize` as an ASN.1 BITSTRING value. |
| /// |
| /// This function is similar to `write_bitvec`, but is available |
| /// even if the `bit-vec` feature is disabled. |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// # extern crate yasna; |
| /// # fn main() { |
| /// use yasna; |
| /// let der_1 = yasna::construct_der(|writer| { |
| /// writer.write_bitvec_bytes(&[117, 13, 64], 18) |
| /// }); |
| /// let der_2 = yasna::construct_der(|writer| { |
| /// writer.write_bitvec_bytes(&[117, 13, 65], 18) |
| /// }); |
| /// assert_eq!(&der_1, &[3, 4, 6, 117, 13, 64]); |
| /// assert_eq!(&der_2, &[3, 4, 6, 117, 13, 64]); |
| /// # } |
| /// ``` |
| </span><span class="kw">pub fn </span>write_bitvec_bytes(<span class="kw-2">mut </span><span class="self">self</span>, bytes: <span class="kw-2">&</span>[u8], len: usize) { |
| <span class="kw">use </span><span class="kw">super</span>::tags::TAG_BITSTRING; |
| <span class="self">self</span>.write_identifier(TAG_BITSTRING, PCBit::Primitive); |
| <span class="macro">debug_assert!</span>(len <= <span class="number">8 </span>* bytes.len()); |
| <span class="macro">debug_assert!</span>(<span class="number">8 </span>* bytes.len() < len + <span class="number">8</span>); |
| <span class="self">self</span>.write_length(<span class="number">1 </span>+ bytes.len()); |
| <span class="kw">let </span>len_diff = <span class="number">8 </span>* bytes.len() - len; |
| <span class="self">self</span>.buf.push(len_diff <span class="kw">as </span>u8); |
| <span class="kw">if </span>bytes.len() > <span class="number">0 </span>{ |
| <span class="self">self</span>.buf.extend_from_slice(<span class="kw-2">&</span>bytes[<span class="number">0 </span>.. bytes.len() - <span class="number">1</span>]); |
| <span class="kw">let </span>mask = !(<span class="number">255u16 </span>>> (<span class="number">8 </span>- len_diff)) <span class="kw">as </span>u8; |
| <span class="self">self</span>.buf.push(bytes[bytes.len() - <span class="number">1</span>] & mask); |
| } |
| } |
| |
| <span class="doccomment">/// Writes `&[u8]` as an ASN.1 OCTETSTRING value. |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// use yasna; |
| /// let der = yasna::construct_der(|writer| { |
| /// writer.write_bytes(b"Hello!") |
| /// }); |
| /// assert_eq!(der, vec![4, 6, 72, 101, 108, 108, 111, 33]); |
| /// ``` |
| </span><span class="kw">pub fn </span>write_bytes(<span class="kw-2">mut </span><span class="self">self</span>, bytes: <span class="kw-2">&</span>[u8]) { |
| <span class="self">self</span>.write_identifier(TAG_OCTETSTRING, PCBit::Primitive); |
| <span class="self">self</span>.write_length(bytes.len()); |
| <span class="self">self</span>.buf.extend_from_slice(bytes); |
| } |
| |
| <span class="doccomment">/// Writes `&str` as an ASN.1 UTF8String value. |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// use yasna; |
| /// let der = yasna::construct_der(|writer| { |
| /// writer.write_utf8_string("Hello!") |
| /// }); |
| /// assert_eq!(der, vec![12, 6, 72, 101, 108, 108, 111, 33]); |
| /// ``` |
| </span><span class="kw">pub fn </span>write_utf8_string(<span class="kw-2">mut </span><span class="self">self</span>, string: <span class="kw-2">&</span>str) { |
| <span class="self">self</span>.write_identifier(TAG_UTF8STRING, PCBit::Primitive); |
| <span class="self">self</span>.write_length(string.len()); |
| <span class="self">self</span>.buf.extend_from_slice(string.as_bytes()); |
| } |
| |
| <span class="doccomment">/// Writes `&str` as an ASN.1 IA5String value. |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// use yasna; |
| /// let der = yasna::construct_der(|writer| { |
| /// writer.write_ia5_string("Hello!") |
| /// }); |
| /// assert_eq!(der, vec![22, 6, 72, 101, 108, 108, 111, 33]); |
| /// ``` |
| </span><span class="kw">pub fn </span>write_ia5_string(<span class="kw-2">mut </span><span class="self">self</span>, string: <span class="kw-2">&</span>str) { |
| <span class="macro">assert!</span>(string.is_ascii(), <span class="string">"IA5 string must be ASCII"</span>); |
| <span class="self">self</span>.write_identifier(TAG_IA5STRING, PCBit::Primitive); |
| <span class="self">self</span>.write_length(string.len()); |
| <span class="self">self</span>.buf.extend_from_slice(string.as_bytes()); |
| } |
| |
| <span class="doccomment">/// Writes `&str` as an ASN.1 BMPString value. |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// use yasna; |
| /// let der = yasna::construct_der(|writer| { |
| /// writer.write_bmp_string("❤πü2?") |
| /// }); |
| /// assert_eq!(der, vec![30, 10, 39, 100, 3, 192, 0, 252, 0, 50, 0, 63]); |
| /// ``` |
| </span><span class="kw">pub fn </span>write_bmp_string(<span class="kw-2">mut </span><span class="self">self</span>, string: <span class="kw-2">&</span>str) { |
| <span class="kw">let </span>utf16 : Vec<u16> = string.encode_utf16().collect(); |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>bytes = Vec::with_capacity(utf16.len() * <span class="number">2</span>); |
| <span class="kw">for </span>c <span class="kw">in </span>utf16 { |
| bytes.push((c / <span class="number">256</span>) <span class="kw">as </span>u8); |
| bytes.push((c % <span class="number">256</span>) <span class="kw">as </span>u8); |
| } |
| |
| <span class="self">self</span>.write_identifier(TAG_BMPSTRING, PCBit::Primitive); |
| <span class="self">self</span>.write_length(bytes.len()); |
| <span class="self">self</span>.buf.extend_from_slice(<span class="kw-2">&</span>bytes); |
| } |
| |
| <span class="doccomment">/// Writes the ASN.1 NULL value. |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// use yasna; |
| /// let der = yasna::construct_der(|writer| { |
| /// writer.write_null() |
| /// }); |
| /// assert_eq!(der, vec![5, 0]); |
| /// ``` |
| </span><span class="kw">pub fn </span>write_null(<span class="kw-2">mut </span><span class="self">self</span>) { |
| <span class="self">self</span>.write_identifier(TAG_NULL, PCBit::Primitive); |
| <span class="self">self</span>.write_length(<span class="number">0</span>); |
| } |
| |
| <span class="doccomment">/// Writes an ASN.1 object identifier. |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// use yasna; |
| /// use yasna::models::ObjectIdentifier; |
| /// let der = yasna::construct_der(|writer| { |
| /// writer.write_oid(&ObjectIdentifier::from_slice( |
| /// &[1, 2, 840, 113549, 1, 1])) |
| /// }); |
| /// assert_eq!(&der, &[6, 8, 42, 134, 72, 134, 247, 13, 1, 1]); |
| /// ``` |
| /// |
| /// # Panics |
| /// |
| /// It panics when the OID cannot be canonically encoded in BER. |
| </span><span class="kw">pub fn </span>write_oid(<span class="kw-2">mut </span><span class="self">self</span>, oid: <span class="kw-2">&</span>ObjectIdentifier) { |
| <span class="macro">assert!</span>(oid.components().len() >= <span class="number">2</span>, <span class="string">"Invalid OID: too short"</span>); |
| <span class="kw">let </span>id0 = oid.components()[<span class="number">0</span>]; |
| <span class="kw">let </span>id1 = oid.components()[<span class="number">1</span>]; |
| <span class="macro">assert!</span>( |
| (id0 < <span class="number">3</span>) && (id1 < <span class="number">18446744073709551535</span>) && |
| (id0 >= <span class="number">2 </span>|| id1 < <span class="number">40</span>), |
| <span class="string">"Invalid OID {{{} {} ...}}"</span>, id0, id1); |
| <span class="kw">let </span>subid0 = id0 * <span class="number">40 </span>+ id1; |
| <span class="kw">let </span><span class="kw-2">mut </span>length = <span class="number">0</span>; |
| <span class="kw">for </span>i <span class="kw">in </span><span class="number">1</span>..oid.components().len() { |
| <span class="kw">let </span><span class="kw-2">mut </span>subid = <span class="kw">if </span>i == <span class="number">1 </span>{ |
| subid0 |
| } <span class="kw">else </span>{ |
| oid.components()[i] |
| } | <span class="number">1</span>; |
| <span class="kw">while </span>subid > <span class="number">0 </span>{ |
| length += <span class="number">1</span>; |
| subid >>= <span class="number">7</span>; |
| } |
| } |
| <span class="self">self</span>.write_identifier(TAG_OID, PCBit::Primitive); |
| <span class="self">self</span>.write_length(length); |
| <span class="kw">for </span>i <span class="kw">in </span><span class="number">1</span>..oid.components().len() { |
| <span class="kw">let </span>subid = <span class="kw">if </span>i == <span class="number">1 </span>{ |
| subid0 |
| } <span class="kw">else </span>{ |
| oid.components()[i] |
| }; |
| <span class="kw">let </span><span class="kw-2">mut </span>shiftnum = <span class="number">63</span>; <span class="comment">// ceil(64 / 7) * 7 - 7 |
| </span><span class="kw">while </span>((subid|<span class="number">1</span>) >> shiftnum) == <span class="number">0 </span>{ |
| shiftnum -= <span class="number">7</span>; |
| } |
| <span class="kw">while </span>shiftnum > <span class="number">0 </span>{ |
| <span class="self">self</span>.buf.push(<span class="number">128 </span>| ((((subid|<span class="number">1</span>) >> shiftnum) & <span class="number">127</span>) <span class="kw">as </span>u8)); |
| shiftnum -= <span class="number">7</span>; |
| } |
| <span class="self">self</span>.buf.push((subid & <span class="number">127</span>) <span class="kw">as </span>u8); |
| } |
| } |
| |
| <span class="doccomment">/// Writes an ASN.1 UTF8String. |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// use yasna; |
| /// let der = yasna::construct_der(|writer| { |
| /// writer.write_utf8string("gnaw ροκανίζω 𪘂る") |
| /// }); |
| /// assert_eq!(&der, &[ |
| /// 12, 29, 103, 110, 97, 119, 32, 207, 129, 206, 191, 206, |
| /// 186, 206, 177, 206, 189, 206, 175, 206, 182, 207, |
| /// 137, 32, 240, 170, 152, 130, 227, 130, 139]); |
| /// ``` |
| </span><span class="kw">pub fn </span>write_utf8string(<span class="self">self</span>, string: <span class="kw-2">&</span>str) { |
| <span class="self">self</span>.write_tagged_implicit(TAG_UTF8STRING, |writer| { |
| writer.write_bytes(string.as_bytes()) |
| }) |
| } |
| |
| <span class="doccomment">/// Writes ASN.1 SEQUENCE. |
| /// |
| /// This function uses the loan pattern: `callback` is called back with |
| /// a [`DERWriterSeq`][derwriterseq], to which the contents of the |
| /// SEQUENCE is written. |
| /// |
| /// [derwriterseq]: struct.DERWriterSeq.html |
| /// |
| /// This is equivalent to `write_sequence_of` in behaviors. |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// use yasna; |
| /// let der = yasna::construct_der(|writer| { |
| /// writer.write_sequence(|writer| { |
| /// writer.next().write_i64(10); |
| /// writer.next().write_bool(true); |
| /// }) |
| /// }); |
| /// assert_eq!(der, vec![48, 6, 2, 1, 10, 1, 1, 255]); |
| /// ``` |
| </span><span class="kw">pub fn </span>write_sequence<T, F>(<span class="kw-2">mut </span><span class="self">self</span>, callback: F) -> T |
| <span class="kw">where </span>F: FnOnce(<span class="kw-2">&mut </span>DERWriterSeq) -> T { |
| <span class="self">self</span>.write_identifier(TAG_SEQUENCE, PCBit::Constructed); |
| <span class="kw">return </span><span class="self">self</span>.with_length(|writer| { |
| callback(<span class="kw-2">&mut </span>DERWriterSeq { |
| buf: writer.buf, |
| }) |
| }); |
| } |
| |
| <span class="doccomment">/// Writes ASN.1 SEQUENCE OF. |
| /// |
| /// This function uses the loan pattern: `callback` is called back with |
| /// a [`DERWriterSeq`][derwriterseq], to which the contents of the |
| /// SEQUENCE OF are written. |
| /// |
| /// [derwriterseq]: struct.DERWriterSeq.html |
| /// |
| /// This is equivalent to `write_sequence` in behaviors. |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// use yasna; |
| /// let der = yasna::construct_der(|writer| { |
| /// writer.write_sequence_of(|writer| { |
| /// for &i in &[10, -129] { |
| /// writer.next().write_i64(i); |
| /// } |
| /// }) |
| /// }); |
| /// assert_eq!(der, vec![48, 7, 2, 1, 10, 2, 2, 255, 127]); |
| /// ``` |
| </span><span class="kw">pub fn </span>write_sequence_of<T, F>(<span class="self">self</span>, callback: F) -> T |
| <span class="kw">where </span>F: FnOnce(<span class="kw-2">&mut </span>DERWriterSeq) -> T { |
| <span class="self">self</span>.write_sequence(callback) |
| } |
| |
| <span class="doccomment">/// Writes ASN.1 SET. |
| /// |
| /// This function uses the loan pattern: `callback` is called back with |
| /// a [`DERWriterSet`][derwriterset], to which the contents of the |
| /// SET are written. |
| /// |
| /// [derwriterset]: struct.DERWriterSet.html |
| /// |
| /// For SET OF values, use `write_set_of` instead. |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// use yasna; |
| /// let der = yasna::construct_der(|writer| { |
| /// writer.write_set(|writer| { |
| /// writer.next().write_i64(10); |
| /// writer.next().write_bool(true); |
| /// }) |
| /// }); |
| /// assert_eq!(der, vec![49, 6, 1, 1, 255, 2, 1, 10]); |
| /// ``` |
| </span><span class="kw">pub fn </span>write_set<T, F>(<span class="kw-2">mut </span><span class="self">self</span>, callback: F) -> T |
| <span class="kw">where </span>F: FnOnce(<span class="kw-2">&mut </span>DERWriterSet) -> T { |
| <span class="kw">let </span><span class="kw-2">mut </span>bufs = Vec::new(); |
| <span class="kw">let </span>result = callback(<span class="kw-2">&mut </span>DERWriterSet { |
| bufs: <span class="kw-2">&mut </span>bufs, |
| }); |
| <span class="kw">for </span>buf <span class="kw">in </span>bufs.iter() { |
| <span class="macro">assert!</span>(buf.len() > <span class="number">0</span>, <span class="string">"Empty output in write_set()"</span>); |
| } |
| bufs.sort_by(|buf0, buf1| { |
| <span class="kw">let </span>buf00 = buf0[<span class="number">0</span>] & <span class="number">223</span>; |
| <span class="kw">let </span>buf10 = buf1[<span class="number">0</span>] & <span class="number">223</span>; |
| <span class="kw">if </span>buf00 != buf10 || (buf0[<span class="number">0</span>] & <span class="number">31</span>) != <span class="number">31 </span>{ |
| <span class="kw">return </span>buf00.cmp(<span class="kw-2">&</span>buf10); |
| } |
| <span class="kw">let </span>len0 = buf0[<span class="number">1</span>..].iter().position(|x| x & <span class="number">128 </span>== <span class="number">0</span>).unwrap(); |
| <span class="kw">let </span>len1 = buf1[<span class="number">1</span>..].iter().position(|x| x & <span class="number">128 </span>== <span class="number">0</span>).unwrap(); |
| <span class="kw">if </span>len0 != len1 { |
| <span class="kw">return </span>len0.cmp(<span class="kw-2">&</span>len1); |
| } |
| <span class="kw">return </span>buf0[<span class="number">1</span>..].cmp(<span class="kw-2">&</span>buf1[<span class="number">1</span>..]); |
| }); |
| <span class="comment">// let bufs_len = bufs.iter().map(|buf| buf.len()).sum(); |
| </span><span class="kw">let </span>bufs_len = bufs.iter().map(|buf| buf.len()).fold(<span class="number">0</span>, |x, y| x + y); |
| <span class="self">self</span>.write_identifier(TAG_SET, PCBit::Constructed); |
| <span class="self">self</span>.write_length(bufs_len); |
| <span class="kw">for </span>buf <span class="kw">in </span>bufs.iter() { |
| <span class="self">self</span>.buf.extend_from_slice(buf); |
| } |
| <span class="kw">return </span>result; |
| } |
| |
| <span class="doccomment">/// Writes ASN.1 SET OF. |
| /// |
| /// This function uses the loan pattern: `callback` is called back with |
| /// a [`DERWriterSet`][derwriterset], to which the contents of the |
| /// SET OF are written. |
| /// |
| /// [derwriterset]: struct.DERWriterSet.html |
| /// |
| /// For SET values, use `write_set` instead. |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// use yasna; |
| /// let der = yasna::construct_der(|writer| { |
| /// writer.write_set_of(|writer| { |
| /// for &i in &[10, -129] { |
| /// writer.next().write_i64(i); |
| /// } |
| /// }) |
| /// }); |
| /// assert_eq!(der, vec![49, 7, 2, 1, 10, 2, 2, 255, 127]); |
| /// ``` |
| </span><span class="kw">pub fn </span>write_set_of<T, F>(<span class="kw-2">mut </span><span class="self">self</span>, callback: F) -> T |
| <span class="kw">where </span>F: FnOnce(<span class="kw-2">&mut </span>DERWriterSet) -> T { |
| <span class="kw">let </span><span class="kw-2">mut </span>bufs = Vec::new(); |
| <span class="kw">let </span>result = callback(<span class="kw-2">&mut </span>DERWriterSet { |
| bufs: <span class="kw-2">&mut </span>bufs, |
| }); |
| <span class="kw">for </span>buf <span class="kw">in </span>bufs.iter() { |
| <span class="macro">assert!</span>(buf.len() > <span class="number">0</span>, <span class="string">"Empty output in write_set_of()"</span>); |
| } |
| bufs.sort(); |
| <span class="comment">// let bufs_len = bufs.iter().map(|buf| buf.len()).sum(); |
| </span><span class="kw">let </span>bufs_len = bufs.iter().map(|buf| buf.len()).fold(<span class="number">0</span>, |x, y| x + y); |
| <span class="self">self</span>.write_identifier(TAG_SET, PCBit::Constructed); |
| <span class="self">self</span>.write_length(bufs_len); |
| <span class="kw">for </span>buf <span class="kw">in </span>bufs.iter() { |
| <span class="self">self</span>.buf.extend_from_slice(buf); |
| } |
| <span class="kw">return </span>result; |
| } |
| |
| <span class="doccomment">/// Writes an ASN.1 NumericString. |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// use yasna; |
| /// let der = yasna::construct_der(|writer| { |
| /// writer.write_numeric_string("128 256") |
| /// }); |
| /// assert_eq!(&der, &[18, 7, 49, 50, 56, 32, 50, 53, 54]); |
| /// ``` |
| </span><span class="kw">pub fn </span>write_numeric_string(<span class="self">self</span>, string: <span class="kw-2">&</span>str) { |
| <span class="kw">let </span>bytes = string.as_bytes(); |
| <span class="kw">for </span><span class="kw-2">&</span>byte <span class="kw">in </span>bytes { |
| <span class="macro">assert!</span>(byte == <span class="string">b' ' </span>|| (<span class="string">b'0' </span><= byte && byte <= <span class="string">b'9'</span>), |
| <span class="string">"Invalid NumericString: {:?} appeared"</span>, byte); |
| } |
| <span class="self">self</span>.write_tagged_implicit(TAG_NUMERICSTRING, |writer| { |
| writer.write_bytes(bytes) |
| }); |
| } |
| |
| <span class="doccomment">/// Writes an ASN.1 PrintableString. |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// use yasna; |
| /// let der = yasna::construct_der(|writer| { |
| /// writer.write_printable_string("Co., Ltd.") |
| /// }); |
| /// assert_eq!(&der, &[19, 9, 67, 111, 46, 44, 32, 76, 116, 100, 46]); |
| /// ``` |
| </span><span class="kw">pub fn </span>write_printable_string(<span class="self">self</span>, string: <span class="kw-2">&</span>str) { |
| <span class="kw">let </span>bytes = string.as_bytes(); |
| <span class="kw">for </span><span class="kw-2">&</span>byte <span class="kw">in </span>bytes { |
| <span class="macro">assert!</span>( |
| byte == <span class="string">b' ' </span>|| |
| (<span class="string">b'\'' </span><= byte && byte <= <span class="string">b':' </span>&& byte != <span class="string">b'*'</span>) || |
| byte == <span class="string">b'=' </span>|| |
| (<span class="string">b'A' </span><= byte && byte <= <span class="string">b'Z'</span>) || |
| (<span class="string">b'a' </span><= byte && byte <= <span class="string">b'z'</span>), |
| <span class="string">"Invalid PrintableString: {:?} appeared"</span>, byte); |
| } |
| <span class="self">self</span>.write_tagged_implicit(TAG_PRINTABLESTRING, |writer| { |
| writer.write_bytes(bytes) |
| }); |
| } |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"chrono"</span>)] |
| </span><span class="doccomment">/// Writes an ASN.1 UTCTime. |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// # extern crate chrono; |
| /// # extern crate yasna; |
| /// # fn main() { |
| /// use yasna; |
| /// use yasna::models::UTCTime; |
| /// use chrono::{Utc,TimeZone}; |
| /// let der = yasna::construct_der(|writer| { |
| /// writer.write_utctime( |
| /// &UTCTime::from_datetime(&Utc.timestamp(378820800, 0))) |
| /// }); |
| /// assert_eq!(&der, &[ |
| /// 23, 13, 56, 50, 48, 49, 48, 50, 49, 50, 48, 48, 48, 48, 90]); |
| /// # } |
| /// ``` |
| /// |
| /// # Features |
| /// |
| /// This method is enabled by `chrono` feature. |
| /// |
| /// ```toml |
| /// [dependencies] |
| /// yasna = { version = "*", features = ["chrono"] } |
| /// ``` |
| </span><span class="kw">pub fn </span>write_utctime(<span class="self">self</span>, datetime: <span class="kw-2">&</span>UTCTime) { |
| <span class="kw">use </span><span class="kw">super</span>::tags::TAG_UTCTIME; |
| <span class="self">self</span>.write_tagged_implicit(TAG_UTCTIME, |writer| { |
| writer.write_bytes(<span class="kw-2">&</span>datetime.to_bytes()) |
| }); |
| } |
| |
| <span class="attribute">#[cfg(feature = <span class="string">"chrono"</span>)] |
| </span><span class="doccomment">/// Writes an ASN.1 GeneralizedTime. |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// # extern crate chrono; |
| /// # extern crate yasna; |
| /// # fn main() { |
| /// use yasna; |
| /// use yasna::models::GeneralizedTime; |
| /// use chrono::{Utc,TimeZone}; |
| /// let der = yasna::construct_der(|writer| { |
| /// writer.write_generalized_time( |
| /// &GeneralizedTime::from_datetime( |
| /// &Utc.timestamp(500159309, 724_000_000))) |
| /// }); |
| /// assert_eq!(&der, &[ |
| /// 24, 19, 49, 57, 56, 53, 49, 49, 48, 54, 50, |
| /// 49, 48, 56, 50, 57, 46, 55, 50, 52, 90]); |
| /// # } |
| /// ``` |
| /// |
| /// # Features |
| /// |
| /// This method is enabled by `chrono` feature. |
| /// |
| /// ```toml |
| /// [dependencies] |
| /// yasna = { version = "*", features = ["chrono"] } |
| /// ``` |
| </span><span class="kw">pub fn </span>write_generalized_time(<span class="self">self</span>, datetime: <span class="kw-2">&</span>GeneralizedTime) { |
| <span class="kw">use </span><span class="kw">super</span>::tags::TAG_GENERALIZEDTIME; |
| <span class="self">self</span>.write_tagged_implicit(TAG_GENERALIZEDTIME, |writer| { |
| writer.write_bytes(<span class="kw-2">&</span>datetime.to_bytes()) |
| }); |
| } |
| |
| <span class="doccomment">/// Writes an ASN.1 VisibleString. |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// use yasna; |
| /// let der = yasna::construct_der(|writer| { |
| /// writer.write_visible_string("Hi!") |
| /// }); |
| /// assert_eq!(&der, &[26, 3, 72, 105, 33]); |
| /// ``` |
| </span><span class="kw">pub fn </span>write_visible_string(<span class="self">self</span>, string: <span class="kw-2">&</span>str) { |
| <span class="kw">let </span>bytes = string.as_bytes(); |
| <span class="kw">for </span><span class="kw-2">&</span>byte <span class="kw">in </span>bytes { |
| <span class="macro">assert!</span>(<span class="string">b' ' </span><= byte && byte <= <span class="string">b'~'</span>, |
| <span class="string">"Invalid VisibleString: {:?} appeared"</span>, byte); |
| } |
| <span class="self">self</span>.write_tagged_implicit(TAG_VISIBLESTRING, |writer| { |
| writer.write_bytes(bytes) |
| }); |
| } |
| |
| <span class="doccomment">/// Writes a (explicitly) tagged value. |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// use yasna::{self,Tag}; |
| /// let der = yasna::construct_der(|writer| { |
| /// writer.write_tagged(Tag::context(3), |writer| { |
| /// writer.write_i64(10) |
| /// }) |
| /// }); |
| /// assert_eq!(der, vec![163, 3, 2, 1, 10]); |
| /// ``` |
| /// |
| /// Note: you can achieve the same using `write_tagged_implicit`: |
| /// |
| /// ``` |
| /// use yasna::{self,Tag}; |
| /// let der = yasna::construct_der(|writer| { |
| /// writer.write_tagged_implicit(Tag::context(3), |writer| { |
| /// writer.write_sequence(|writer| { |
| /// let writer = writer.next(); |
| /// writer.write_i64(10) |
| /// }) |
| /// }) |
| /// }); |
| /// assert_eq!(der, vec![163, 3, 2, 1, 10]); |
| /// ``` |
| </span><span class="kw">pub fn </span>write_tagged<T, F>(<span class="kw-2">mut </span><span class="self">self</span>, tag: Tag, callback: F) -> T |
| <span class="kw">where </span>F: FnOnce(DERWriter) -> T { |
| <span class="self">self</span>.write_identifier(tag, PCBit::Constructed); |
| <span class="kw">return </span><span class="self">self</span>.with_length(|writer| { |
| callback(DERWriter::from_buf(writer.buf)) |
| }); |
| } |
| |
| <span class="doccomment">/// Writes an implicitly tagged value. |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// use yasna::{self,Tag}; |
| /// let der = yasna::construct_der(|writer| { |
| /// writer.write_tagged_implicit(Tag::context(3), |writer| { |
| /// writer.write_i64(10) |
| /// }) |
| /// }); |
| /// assert_eq!(der, vec![131, 1, 10]); |
| /// ``` |
| </span><span class="kw">pub fn </span>write_tagged_implicit<T, F> |
| (<span class="kw-2">mut </span><span class="self">self</span>, tag: Tag, callback: F) -> T |
| <span class="kw">where </span>F: FnOnce(DERWriter) -> T { |
| <span class="kw">let </span>tag = <span class="kw">if let </span><span class="prelude-val">Some</span>(tag) = <span class="self">self</span>.implicit_tag { tag } <span class="kw">else </span>{ tag }; |
| <span class="self">self</span>.implicit_tag = <span class="prelude-val">None</span>; |
| <span class="kw">let </span><span class="kw-2">mut </span>writer = DERWriter::from_buf(<span class="self">self</span>.buf); |
| writer.implicit_tag = <span class="prelude-val">Some</span>(tag); |
| <span class="kw">return </span>callback(writer); |
| } |
| |
| <span class="doccomment">/// Writes the arbitrary tagged DER value in `der`. |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// use yasna; |
| /// use yasna::models::TaggedDerValue; |
| /// use yasna::tags::TAG_OCTETSTRING; |
| /// let tagged_der_value = TaggedDerValue::from_tag_and_bytes(TAG_OCTETSTRING, b"Hello!".to_vec()); |
| /// let der1 = yasna::construct_der(|writer| { |
| /// writer.write_tagged_der(&tagged_der_value) |
| /// }); |
| /// let der2 = yasna::construct_der(|writer| { |
| /// writer.write_bytes(b"Hello!") |
| /// }); |
| /// assert_eq!(der1, der2); |
| /// ``` |
| </span><span class="kw">pub fn </span>write_tagged_der(<span class="kw-2">mut </span><span class="self">self</span>, der: <span class="kw-2">&</span>TaggedDerValue) { |
| <span class="self">self</span>.write_identifier(der.tag(), der.pcbit()); |
| <span class="self">self</span>.write_length(der.value().len()); |
| <span class="self">self</span>.buf.extend_from_slice(der.value()); |
| } |
| |
| <span class="doccomment">/// Writes `&[u8]` into the DER output buffer directly. Properly encoded tag |
| /// and length must be included at the start of the passed buffer. |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// use yasna; |
| /// let raw_der = yasna::construct_der(|writer| { |
| /// writer.write_der(b"\x04\x06Hello!") |
| /// }); |
| /// let der = yasna::construct_der(|writer| { |
| /// writer.write_bytes(b"Hello!") |
| /// }); |
| /// assert_eq!(raw_der, der); |
| /// ``` |
| </span><span class="kw">pub fn </span>write_der(<span class="self">self</span>, der: <span class="kw-2">&</span>[u8]) { |
| <span class="self">self</span>.buf.extend_from_slice(der); |
| } |
| } |
| |
| <span class="doccomment">/// A writer object that accepts ASN.1 values. |
| /// |
| /// The main source of this object is the `write_sequence` method from |
| /// [`DERWriter`][derwriter]. |
| /// |
| /// [derwriter]: struct.DERWriter.html |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// use yasna; |
| /// let der = yasna::construct_der(|writer| { |
| /// writer.write_sequence(|writer : &mut yasna::DERWriterSeq| { |
| /// writer.next().write_i64(10); |
| /// writer.next().write_bool(true); |
| /// }) |
| /// }); |
| /// assert_eq!(der, vec![48, 6, 2, 1, 10, 1, 1, 255]); |
| /// ``` |
| </span><span class="attribute">#[derive(Debug)] |
| </span><span class="kw">pub struct </span>DERWriterSeq<<span class="lifetime">'a</span>> { |
| <span class="kw">pub </span>buf: <span class="kw-2">&</span><span class="lifetime">'a </span><span class="kw-2">mut </span>Vec<u8>, |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>> DERWriterSeq<<span class="lifetime">'a</span>> { |
| <span class="doccomment">/// Generates a new [`DERWriter`][derwriter]. |
| /// |
| /// [derwriter]: struct.DERWriter.html |
| </span><span class="kw">pub fn </span>next<<span class="lifetime">'b</span>>(<span class="kw-2">&</span><span class="lifetime">'b </span><span class="kw-2">mut </span><span class="self">self</span>) -> DERWriter<<span class="lifetime">'b</span>> { |
| <span class="kw">return </span>DERWriter::from_buf(<span class="self">self</span>.buf); |
| } |
| } |
| |
| <span class="doccomment">/// A writer object that accepts ASN.1 values. |
| /// |
| /// The main source of this object is the `write_set` method from |
| /// [`DERWriter`][derwriter]. |
| /// |
| /// [derwriter]: struct.DERWriter.html |
| /// |
| /// # Examples |
| /// |
| /// ``` |
| /// use yasna; |
| /// let der = yasna::construct_der(|writer| { |
| /// writer.write_set(|writer : &mut yasna::DERWriterSet| { |
| /// writer.next().write_i64(10); |
| /// writer.next().write_bool(true); |
| /// }) |
| /// }); |
| /// assert_eq!(der, vec![49, 6, 1, 1, 255, 2, 1, 10]); |
| /// ``` |
| </span><span class="attribute">#[derive(Debug)] |
| </span><span class="kw">pub struct </span>DERWriterSet<<span class="lifetime">'a</span>> { |
| bufs: <span class="kw-2">&</span><span class="lifetime">'a </span><span class="kw-2">mut </span>Vec<Vec<u8>>, |
| } |
| |
| <span class="kw">impl</span><<span class="lifetime">'a</span>> DERWriterSet<<span class="lifetime">'a</span>> { |
| <span class="doccomment">/// Generates a new [`DERWriter`][derwriter]. |
| /// |
| /// [derwriter]: struct.DERWriter.html |
| </span><span class="kw">pub fn </span>next<<span class="lifetime">'b</span>>(<span class="kw-2">&</span><span class="lifetime">'b </span><span class="kw-2">mut </span><span class="self">self</span>) -> DERWriter<<span class="lifetime">'b</span>> { |
| <span class="self">self</span>.bufs.push(Vec::new()); |
| <span class="kw">return </span>DERWriter::from_buf(<span class="self">self</span>.bufs.last_mut().unwrap()); |
| } |
| } |
| |
| <span class="attribute">#[cfg(test)] |
| </span><span class="kw">mod </span>tests; |
| </code></pre></div> |
| </section></div></main><div id="rustdoc-vars" data-root-path="../../../" data-current-crate="yasna" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.66.0-nightly (5c8bff74b 2022-10-21)" ></div></body></html> |