| <!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/registry/src/github.com-1ecc6299db9ec823/openssl-0.10.54/src/ssl/bio.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>bio.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="../../../openssl/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="../../../openssl/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="kw">use </span>cfg_if::cfg_if; |
| <span class="kw">use </span>ffi::{ |
| <span class="self">self</span>, BIO_clear_retry_flags, BIO_new, BIO_set_retry_read, BIO_set_retry_write, BIO, |
| BIO_CTRL_DGRAM_QUERY_MTU, BIO_CTRL_FLUSH, |
| }; |
| <span class="kw">use </span>libc::{c_char, c_int, c_long, c_void, strlen}; |
| <span class="kw">use </span>std::any::Any; |
| <span class="kw">use </span>std::io; |
| <span class="kw">use </span>std::io::prelude::<span class="kw-2">*</span>; |
| <span class="kw">use </span>std::panic::{catch_unwind, AssertUnwindSafe}; |
| <span class="kw">use </span>std::ptr; |
| <span class="kw">use </span>std::slice; |
| |
| <span class="kw">use </span><span class="kw">crate</span>::cvt_p; |
| <span class="kw">use </span><span class="kw">crate</span>::error::ErrorStack; |
| |
| <span class="kw">pub struct </span>StreamState<S> { |
| <span class="kw">pub </span>stream: S, |
| <span class="kw">pub </span>error: <span class="prelude-ty">Option</span><io::Error>, |
| <span class="kw">pub </span>panic: <span class="prelude-ty">Option</span><Box<<span class="kw">dyn </span>Any + Send>>, |
| <span class="kw">pub </span>dtls_mtu_size: c_long, |
| } |
| |
| <span class="doccomment">/// Safe wrapper for `BIO_METHOD` |
| </span><span class="kw">pub struct </span>BioMethod(BIO_METHOD); |
| |
| <span class="kw">impl </span>BioMethod { |
| <span class="kw">fn </span>new<S: Read + Write>() -> <span class="prelude-ty">Result</span><BioMethod, ErrorStack> { |
| BIO_METHOD::new::<S>().map(BioMethod) |
| } |
| } |
| |
| <span class="kw">unsafe impl </span>Sync <span class="kw">for </span>BioMethod {} |
| <span class="kw">unsafe impl </span>Send <span class="kw">for </span>BioMethod {} |
| |
| <span class="kw">pub fn </span>new<S: Read + Write>(stream: S) -> <span class="prelude-ty">Result</span><(<span class="kw-2">*mut </span>BIO, BioMethod), ErrorStack> { |
| <span class="kw">let </span>method = BioMethod::new::<S>()<span class="question-mark">?</span>; |
| |
| <span class="kw">let </span>state = Box::new(StreamState { |
| stream, |
| error: <span class="prelude-val">None</span>, |
| panic: <span class="prelude-val">None</span>, |
| dtls_mtu_size: <span class="number">0</span>, |
| }); |
| |
| <span class="kw">unsafe </span>{ |
| <span class="kw">let </span>bio = cvt_p(BIO_new(method.<span class="number">0</span>.get()))<span class="question-mark">?</span>; |
| BIO_set_data(bio, Box::into_raw(state) <span class="kw">as </span><span class="kw-2">*mut </span><span class="kw">_</span>); |
| BIO_set_init(bio, <span class="number">1</span>); |
| |
| <span class="prelude-val">Ok</span>((bio, method)) |
| } |
| } |
| |
| <span class="kw">pub unsafe fn </span>take_error<S>(bio: <span class="kw-2">*mut </span>BIO) -> <span class="prelude-ty">Option</span><io::Error> { |
| <span class="kw">let </span>state = state::<S>(bio); |
| state.error.take() |
| } |
| |
| <span class="kw">pub unsafe fn </span>take_panic<S>(bio: <span class="kw-2">*mut </span>BIO) -> <span class="prelude-ty">Option</span><Box<<span class="kw">dyn </span>Any + Send>> { |
| <span class="kw">let </span>state = state::<S>(bio); |
| state.panic.take() |
| } |
| |
| <span class="kw">pub unsafe fn </span>get_ref<<span class="lifetime">'a</span>, S: <span class="lifetime">'a</span>>(bio: <span class="kw-2">*mut </span>BIO) -> <span class="kw-2">&</span><span class="lifetime">'a </span>S { |
| <span class="kw">let </span>state = <span class="kw-2">&*</span>(BIO_get_data(bio) <span class="kw">as </span><span class="kw-2">*const </span>StreamState<S>); |
| <span class="kw-2">&</span>state.stream |
| } |
| |
| <span class="kw">pub unsafe fn </span>get_mut<<span class="lifetime">'a</span>, S: <span class="lifetime">'a</span>>(bio: <span class="kw-2">*mut </span>BIO) -> <span class="kw-2">&</span><span class="lifetime">'a </span><span class="kw-2">mut </span>S { |
| <span class="kw-2">&mut </span>state(bio).stream |
| } |
| |
| <span class="kw">pub unsafe fn </span>set_dtls_mtu_size<S>(bio: <span class="kw-2">*mut </span>BIO, mtu_size: usize) { |
| <span class="kw">if </span>mtu_size <span class="kw">as </span>u64 > c_long::max_value() <span class="kw">as </span>u64 { |
| <span class="macro">panic!</span>( |
| <span class="string">"Given MTU size {} can't be represented in a positive `c_long` range"</span>, |
| mtu_size |
| ) |
| } |
| state::<S>(bio).dtls_mtu_size = mtu_size <span class="kw">as </span>c_long; |
| } |
| |
| <span class="kw">unsafe fn </span>state<<span class="lifetime">'a</span>, S: <span class="lifetime">'a</span>>(bio: <span class="kw-2">*mut </span>BIO) -> <span class="kw-2">&</span><span class="lifetime">'a </span><span class="kw-2">mut </span>StreamState<S> { |
| <span class="kw-2">&mut *</span>(BIO_get_data(bio) <span class="kw">as </span><span class="kw-2">*mut </span><span class="kw">_</span>) |
| } |
| |
| <span class="kw">unsafe extern </span><span class="string">"C" </span><span class="kw">fn </span>bwrite<S: Write>(bio: <span class="kw-2">*mut </span>BIO, buf: <span class="kw-2">*const </span>c_char, len: c_int) -> c_int { |
| BIO_clear_retry_flags(bio); |
| |
| <span class="kw">let </span>state = state::<S>(bio); |
| <span class="kw">let </span>buf = slice::from_raw_parts(buf <span class="kw">as </span><span class="kw-2">*const </span><span class="kw">_</span>, len <span class="kw">as </span>usize); |
| |
| <span class="kw">match </span>catch_unwind(AssertUnwindSafe(|| state.stream.write(buf))) { |
| <span class="prelude-val">Ok</span>(<span class="prelude-val">Ok</span>(len)) => len <span class="kw">as </span>c_int, |
| <span class="prelude-val">Ok</span>(<span class="prelude-val">Err</span>(err)) => { |
| <span class="kw">if </span>retriable_error(<span class="kw-2">&</span>err) { |
| BIO_set_retry_write(bio); |
| } |
| state.error = <span class="prelude-val">Some</span>(err); |
| -<span class="number">1 |
| </span>} |
| <span class="prelude-val">Err</span>(err) => { |
| state.panic = <span class="prelude-val">Some</span>(err); |
| -<span class="number">1 |
| </span>} |
| } |
| } |
| |
| <span class="kw">unsafe extern </span><span class="string">"C" </span><span class="kw">fn </span>bread<S: Read>(bio: <span class="kw-2">*mut </span>BIO, buf: <span class="kw-2">*mut </span>c_char, len: c_int) -> c_int { |
| BIO_clear_retry_flags(bio); |
| |
| <span class="kw">let </span>state = state::<S>(bio); |
| <span class="kw">let </span>buf = slice::from_raw_parts_mut(buf <span class="kw">as </span><span class="kw-2">*mut </span><span class="kw">_</span>, len <span class="kw">as </span>usize); |
| |
| <span class="kw">match </span>catch_unwind(AssertUnwindSafe(|| state.stream.read(buf))) { |
| <span class="prelude-val">Ok</span>(<span class="prelude-val">Ok</span>(len)) => len <span class="kw">as </span>c_int, |
| <span class="prelude-val">Ok</span>(<span class="prelude-val">Err</span>(err)) => { |
| <span class="kw">if </span>retriable_error(<span class="kw-2">&</span>err) { |
| BIO_set_retry_read(bio); |
| } |
| state.error = <span class="prelude-val">Some</span>(err); |
| -<span class="number">1 |
| </span>} |
| <span class="prelude-val">Err</span>(err) => { |
| state.panic = <span class="prelude-val">Some</span>(err); |
| -<span class="number">1 |
| </span>} |
| } |
| } |
| |
| <span class="attribute">#[allow(clippy::match_like_matches_macro)] </span><span class="comment">// matches macro requires rust 1.42.0 |
| </span><span class="kw">fn </span>retriable_error(err: <span class="kw-2">&</span>io::Error) -> bool { |
| <span class="kw">match </span>err.kind() { |
| io::ErrorKind::WouldBlock | io::ErrorKind::NotConnected => <span class="bool-val">true</span>, |
| <span class="kw">_ </span>=> <span class="bool-val">false</span>, |
| } |
| } |
| |
| <span class="kw">unsafe extern </span><span class="string">"C" </span><span class="kw">fn </span>bputs<S: Write>(bio: <span class="kw-2">*mut </span>BIO, s: <span class="kw-2">*const </span>c_char) -> c_int { |
| bwrite::<S>(bio, s, strlen(s) <span class="kw">as </span>c_int) |
| } |
| |
| <span class="kw">unsafe extern </span><span class="string">"C" </span><span class="kw">fn </span>ctrl<S: Write>( |
| bio: <span class="kw-2">*mut </span>BIO, |
| cmd: c_int, |
| _num: c_long, |
| _ptr: <span class="kw-2">*mut </span>c_void, |
| ) -> c_long { |
| <span class="kw">let </span>state = state::<S>(bio); |
| |
| <span class="kw">if </span>cmd == BIO_CTRL_FLUSH { |
| <span class="kw">match </span>catch_unwind(AssertUnwindSafe(|| state.stream.flush())) { |
| <span class="prelude-val">Ok</span>(<span class="prelude-val">Ok</span>(())) => <span class="number">1</span>, |
| <span class="prelude-val">Ok</span>(<span class="prelude-val">Err</span>(err)) => { |
| state.error = <span class="prelude-val">Some</span>(err); |
| <span class="number">0 |
| </span>} |
| <span class="prelude-val">Err</span>(err) => { |
| state.panic = <span class="prelude-val">Some</span>(err); |
| <span class="number">0 |
| </span>} |
| } |
| } <span class="kw">else if </span>cmd == BIO_CTRL_DGRAM_QUERY_MTU { |
| state.dtls_mtu_size |
| } <span class="kw">else </span>{ |
| <span class="number">0 |
| </span>} |
| } |
| |
| <span class="kw">unsafe extern </span><span class="string">"C" </span><span class="kw">fn </span>create(bio: <span class="kw-2">*mut </span>BIO) -> c_int { |
| BIO_set_init(bio, <span class="number">0</span>); |
| BIO_set_num(bio, <span class="number">0</span>); |
| BIO_set_data(bio, ptr::null_mut()); |
| BIO_set_flags(bio, <span class="number">0</span>); |
| <span class="number">1 |
| </span>} |
| |
| <span class="kw">unsafe extern </span><span class="string">"C" </span><span class="kw">fn </span>destroy<S>(bio: <span class="kw-2">*mut </span>BIO) -> c_int { |
| <span class="kw">if </span>bio.is_null() { |
| <span class="kw">return </span><span class="number">0</span>; |
| } |
| |
| <span class="kw">let </span>data = BIO_get_data(bio); |
| <span class="macro">assert!</span>(!data.is_null()); |
| <span class="kw">let _ </span>= Box::<StreamState<S>>::from_raw(data <span class="kw">as </span><span class="kw-2">*mut </span><span class="kw">_</span>); |
| BIO_set_data(bio, ptr::null_mut()); |
| BIO_set_init(bio, <span class="number">0</span>); |
| <span class="number">1 |
| </span>} |
| |
| <span class="macro">cfg_if! </span>{ |
| <span class="kw">if </span><span class="attribute">#[cfg(any(ossl110, libressl273))] </span>{ |
| <span class="kw">use </span>ffi::{BIO_get_data, BIO_set_data, BIO_set_flags, BIO_set_init}; |
| <span class="kw">use </span><span class="kw">crate</span>::cvt; |
| |
| <span class="attribute">#[allow(bad_style)] |
| </span><span class="kw">unsafe fn </span>BIO_set_num(_bio: <span class="kw-2">*mut </span>ffi::BIO, _num: c_int) {} |
| |
| <span class="attribute">#[allow(bad_style, clippy::upper_case_acronyms)] |
| </span><span class="kw">struct </span>BIO_METHOD(<span class="kw-2">*mut </span>ffi::BIO_METHOD); |
| |
| <span class="kw">impl </span>BIO_METHOD { |
| <span class="kw">fn </span>new<S: Read + Write>() -> <span class="prelude-ty">Result</span><BIO_METHOD, ErrorStack> { |
| <span class="kw">unsafe </span>{ |
| <span class="kw">let </span>ptr = cvt_p(ffi::BIO_meth_new(ffi::BIO_TYPE_NONE, <span class="string">b"rust\0"</span>.as_ptr() <span class="kw">as </span><span class="kw-2">*const </span><span class="kw">_</span>))<span class="question-mark">?</span>; |
| <span class="kw">let </span>method = BIO_METHOD(ptr); |
| cvt(ffi::BIO_meth_set_write__fixed_rust(method.<span class="number">0</span>, <span class="prelude-val">Some</span>(bwrite::<S>)))<span class="question-mark">?</span>; |
| cvt(ffi::BIO_meth_set_read__fixed_rust(method.<span class="number">0</span>, <span class="prelude-val">Some</span>(bread::<S>)))<span class="question-mark">?</span>; |
| cvt(ffi::BIO_meth_set_puts__fixed_rust(method.<span class="number">0</span>, <span class="prelude-val">Some</span>(bputs::<S>)))<span class="question-mark">?</span>; |
| cvt(ffi::BIO_meth_set_ctrl__fixed_rust(method.<span class="number">0</span>, <span class="prelude-val">Some</span>(ctrl::<S>)))<span class="question-mark">?</span>; |
| cvt(ffi::BIO_meth_set_create__fixed_rust(method.<span class="number">0</span>, <span class="prelude-val">Some</span>(create)))<span class="question-mark">?</span>; |
| cvt(ffi::BIO_meth_set_destroy__fixed_rust(method.<span class="number">0</span>, <span class="prelude-val">Some</span>(destroy::<S>)))<span class="question-mark">?</span>; |
| <span class="prelude-val">Ok</span>(method) |
| } |
| } |
| |
| <span class="kw">fn </span>get(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="kw-2">*mut </span>ffi::BIO_METHOD { |
| <span class="self">self</span>.<span class="number">0 |
| </span>} |
| } |
| |
| <span class="kw">impl </span>Drop <span class="kw">for </span>BIO_METHOD { |
| <span class="kw">fn </span>drop(<span class="kw-2">&mut </span><span class="self">self</span>) { |
| <span class="kw">unsafe </span>{ |
| ffi::BIO_meth_free(<span class="self">self</span>.<span class="number">0</span>); |
| } |
| } |
| } |
| } <span class="kw">else </span>{ |
| <span class="attribute">#[allow(bad_style, clippy::upper_case_acronyms)] |
| </span><span class="kw">struct </span>BIO_METHOD(<span class="kw-2">*mut </span>ffi::BIO_METHOD); |
| |
| <span class="kw">impl </span>BIO_METHOD { |
| <span class="kw">fn </span>new<S: Read + Write>() -> <span class="prelude-ty">Result</span><BIO_METHOD, ErrorStack> { |
| <span class="kw">let </span>ptr = Box::new(ffi::BIO_METHOD { |
| type_: ffi::BIO_TYPE_NONE, |
| name: <span class="string">b"rust\0"</span>.as_ptr() <span class="kw">as </span><span class="kw-2">*const </span><span class="kw">_</span>, |
| bwrite: <span class="prelude-val">Some</span>(bwrite::<S>), |
| bread: <span class="prelude-val">Some</span>(bread::<S>), |
| bputs: <span class="prelude-val">Some</span>(bputs::<S>), |
| bgets: <span class="prelude-val">None</span>, |
| ctrl: <span class="prelude-val">Some</span>(ctrl::<S>), |
| create: <span class="prelude-val">Some</span>(create), |
| destroy: <span class="prelude-val">Some</span>(destroy::<S>), |
| callback_ctrl: <span class="prelude-val">None</span>, |
| }); |
| |
| <span class="prelude-val">Ok</span>(BIO_METHOD(Box::into_raw(ptr))) |
| } |
| |
| <span class="kw">fn </span>get(<span class="kw-2">&</span><span class="self">self</span>) -> <span class="kw-2">*mut </span>ffi::BIO_METHOD { |
| <span class="self">self</span>.<span class="number">0 |
| </span>} |
| } |
| |
| <span class="kw">impl </span>Drop <span class="kw">for </span>BIO_METHOD { |
| <span class="kw">fn </span>drop(<span class="kw-2">&mut </span><span class="self">self</span>) { |
| <span class="kw">unsafe </span>{ |
| <span class="kw">let _ </span>= Box::<ffi::BIO_METHOD>::from_raw(<span class="self">self</span>.<span class="number">0</span>); |
| } |
| } |
| } |
| |
| <span class="attribute">#[allow(bad_style)] |
| </span><span class="kw">unsafe fn </span>BIO_set_init(bio: <span class="kw-2">*mut </span>ffi::BIO, init: c_int) { |
| (<span class="kw-2">*</span>bio).init = init; |
| } |
| |
| <span class="attribute">#[allow(bad_style)] |
| </span><span class="kw">unsafe fn </span>BIO_set_flags(bio: <span class="kw-2">*mut </span>ffi::BIO, flags: c_int) { |
| (<span class="kw-2">*</span>bio).flags = flags; |
| } |
| |
| <span class="attribute">#[allow(bad_style)] |
| </span><span class="kw">unsafe fn </span>BIO_get_data(bio: <span class="kw-2">*mut </span>ffi::BIO) -> <span class="kw-2">*mut </span>c_void { |
| (<span class="kw-2">*</span>bio).ptr |
| } |
| |
| <span class="attribute">#[allow(bad_style)] |
| </span><span class="kw">unsafe fn </span>BIO_set_data(bio: <span class="kw-2">*mut </span>ffi::BIO, data: <span class="kw-2">*mut </span>c_void) { |
| (<span class="kw-2">*</span>bio).ptr = data; |
| } |
| |
| <span class="attribute">#[allow(bad_style)] |
| </span><span class="kw">unsafe fn </span>BIO_set_num(bio: <span class="kw-2">*mut </span>ffi::BIO, num: c_int) { |
| (<span class="kw-2">*</span>bio).num = num; |
| } |
| } |
| } |
| </code></pre></div> |
| </section></div></main><div id="rustdoc-vars" data-root-path="../../../" data-current-crate="openssl" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.66.0-nightly (5c8bff74b 2022-10-21)" ></div></body></html> |
