| <!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 `attestation/src/platform/libos/occlum.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>occlum.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="../../../../teaclave_attestation/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="../../../../teaclave_attestation/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> |
| <span id="2">2</span> |
| <span id="3">3</span> |
| <span id="4">4</span> |
| <span id="5">5</span> |
| <span id="6">6</span> |
| <span id="7">7</span> |
| <span id="8">8</span> |
| <span id="9">9</span> |
| <span id="10">10</span> |
| <span id="11">11</span> |
| <span id="12">12</span> |
| <span id="13">13</span> |
| <span id="14">14</span> |
| <span id="15">15</span> |
| <span id="16">16</span> |
| <span id="17">17</span> |
| <span id="18">18</span> |
| <span id="19">19</span> |
| <span id="20">20</span> |
| <span id="21">21</span> |
| <span id="22">22</span> |
| <span id="23">23</span> |
| <span id="24">24</span> |
| <span id="25">25</span> |
| <span id="26">26</span> |
| <span id="27">27</span> |
| <span id="28">28</span> |
| <span id="29">29</span> |
| <span id="30">30</span> |
| <span id="31">31</span> |
| <span id="32">32</span> |
| <span id="33">33</span> |
| <span id="34">34</span> |
| <span id="35">35</span> |
| <span id="36">36</span> |
| <span id="37">37</span> |
| <span id="38">38</span> |
| <span id="39">39</span> |
| <span id="40">40</span> |
| <span id="41">41</span> |
| <span id="42">42</span> |
| <span id="43">43</span> |
| <span id="44">44</span> |
| <span id="45">45</span> |
| <span id="46">46</span> |
| <span id="47">47</span> |
| <span id="48">48</span> |
| <span id="49">49</span> |
| <span id="50">50</span> |
| <span id="51">51</span> |
| <span id="52">52</span> |
| <span id="53">53</span> |
| <span id="54">54</span> |
| <span id="55">55</span> |
| <span id="56">56</span> |
| <span id="57">57</span> |
| <span id="58">58</span> |
| <span id="59">59</span> |
| <span id="60">60</span> |
| <span id="61">61</span> |
| <span id="62">62</span> |
| <span id="63">63</span> |
| <span id="64">64</span> |
| <span id="65">65</span> |
| <span id="66">66</span> |
| <span id="67">67</span> |
| <span id="68">68</span> |
| <span id="69">69</span> |
| <span id="70">70</span> |
| <span id="71">71</span> |
| <span id="72">72</span> |
| <span id="73">73</span> |
| <span id="74">74</span> |
| <span id="75">75</span> |
| <span id="76">76</span> |
| <span id="77">77</span> |
| <span id="78">78</span> |
| <span id="79">79</span> |
| <span id="80">80</span> |
| <span id="81">81</span> |
| <span id="82">82</span> |
| <span id="83">83</span> |
| <span id="84">84</span> |
| <span id="85">85</span> |
| <span id="86">86</span> |
| <span id="87">87</span> |
| <span id="88">88</span> |
| <span id="89">89</span> |
| <span id="90">90</span> |
| <span id="91">91</span> |
| <span id="92">92</span> |
| <span id="93">93</span> |
| <span id="94">94</span> |
| <span id="95">95</span> |
| <span id="96">96</span> |
| <span id="97">97</span> |
| <span id="98">98</span> |
| <span id="99">99</span> |
| <span id="100">100</span> |
| <span id="101">101</span> |
| <span id="102">102</span> |
| <span id="103">103</span> |
| <span id="104">104</span> |
| <span id="105">105</span> |
| <span id="106">106</span> |
| <span id="107">107</span> |
| <span id="108">108</span> |
| <span id="109">109</span> |
| <span id="110">110</span> |
| <span id="111">111</span> |
| <span id="112">112</span> |
| <span id="113">113</span> |
| <span id="114">114</span> |
| <span id="115">115</span> |
| <span id="116">116</span> |
| <span id="117">117</span> |
| <span id="118">118</span> |
| <span id="119">119</span> |
| <span id="120">120</span> |
| <span id="121">121</span> |
| <span id="122">122</span> |
| <span id="123">123</span> |
| <span id="124">124</span> |
| <span id="125">125</span> |
| <span id="126">126</span> |
| <span id="127">127</span> |
| <span id="128">128</span> |
| <span id="129">129</span> |
| <span id="130">130</span> |
| <span id="131">131</span> |
| <span id="132">132</span> |
| <span id="133">133</span> |
| <span id="134">134</span> |
| <span id="135">135</span> |
| <span id="136">136</span> |
| <span id="137">137</span> |
| <span id="138">138</span> |
| <span id="139">139</span> |
| <span id="140">140</span> |
| <span id="141">141</span> |
| <span id="142">142</span> |
| <span id="143">143</span> |
| <span id="144">144</span> |
| <span id="145">145</span> |
| <span id="146">146</span> |
| <span id="147">147</span> |
| <span id="148">148</span> |
| <span id="149">149</span> |
| <span id="150">150</span> |
| </pre><pre class="rust"><code><span class="comment">// Licensed to the Apache Software Foundation (ASF) under one |
| // or more contributor license agreements. See the NOTICE file |
| // distributed with this work for additional information |
| // regarding copyright ownership. The ASF licenses this file |
| // to you 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. |
| |
| // Depend on occlum(https://github.com/occlum/occlum.git) |
| |
| </span><span class="kw">use </span><span class="kw">super</span>::<span class="kw">super</span>::{PlatformError, <span class="prelude-ty">Result</span>}; |
| <span class="kw">use </span>libc::<span class="kw-2">*</span>; |
| <span class="kw">use </span>log::debug; |
| <span class="kw">use </span>sgx_crypto::ecc::EcPublicKey; |
| <span class="kw">use </span>sgx_rand::{RdRand, Rng}; |
| <span class="kw">use </span>sgx_types::types::<span class="kw-2">*</span>; |
| <span class="kw">use </span>std::ffi::CString; |
| |
| <span class="comment">// From occlum/src/libos/src/fs/dev_fs/dev_sgx/consts.rs. |
| </span><span class="kw">const </span>SGX_CMD_NUM_GEN_EPID_QUOTE: u64 = (<span class="number">2u32 |
| </span>| (<span class="string">'s' </span><span class="kw">as </span>u32) << <span class="number">8 |
| </span>| (std::mem::size_of::<IoctlGenEPIDQuoteArg>() <span class="kw">as </span>u32) << <span class="number">16 |
| </span>| <span class="number">3u32 </span><< <span class="number">30</span>) <span class="kw">as </span>u64; |
| <span class="comment">// for dcap |
| </span><span class="kw">const </span>IOCTL_MAX_RETRIES: u32 = <span class="number">20</span>; |
| <span class="kw">const </span>SGXIOC_GET_DCAP_QUOTE_SIZE: u64 = <span class="number">0x80047307</span>; |
| <span class="kw">const </span>SGXIOC_GEN_DCAP_QUOTE: u64 = <span class="number">0xc0187308</span>; |
| |
| <span class="comment">// From occlum/src/libos/src/fs/dev_fs/dev_sgx/mod.rs |
| </span><span class="attribute">#[repr(C)] |
| </span><span class="kw">pub struct </span>IoctlGenDCAPQuoteArg { |
| <span class="kw">pub </span>report_data: <span class="kw-2">*const </span>ReportData, <span class="comment">// Input |
| </span><span class="kw">pub </span>quote_size: <span class="kw-2">*mut </span>u32, <span class="comment">// Input/output |
| </span><span class="kw">pub </span>quote_buf: <span class="kw-2">*mut </span>u8, <span class="comment">// Output |
| </span>} |
| |
| <span class="comment">// From occlum/src/libos/src/fs/dev_fs/dev_sgx/mod.rs |
| </span><span class="attribute">#[repr(C)] |
| </span><span class="kw">struct </span>IoctlGenEPIDQuoteArg { |
| report_data: ReportData, <span class="comment">// Input |
| </span>quote_type: QuoteSignType, <span class="comment">// Input |
| </span>spid: Spid, <span class="comment">// Input |
| </span>nonce: QuoteNonce, <span class="comment">// Input |
| </span>sigrl_ptr: <span class="kw-2">*const </span>u8, <span class="comment">// Input (optional) |
| </span>sigrl_len: u32, <span class="comment">// Input (optional) |
| </span>quote_buf_len: u32, <span class="comment">// Input |
| </span>quote_buf: <span class="kw-2">*mut </span>u8, <span class="comment">// Output |
| </span>} |
| |
| <span class="kw">fn </span>get_dev_fd() -> libc::c_int { |
| <span class="kw">let </span>path = CString::new(<span class="string">"/dev/sgx"</span>).unwrap(); |
| <span class="kw">let </span>fd = <span class="kw">unsafe </span>{ libc::open(path.as_ptr(), O_RDONLY) }; |
| <span class="kw">if </span>fd > <span class="number">0 </span>{ |
| fd |
| } <span class="kw">else </span>{ |
| <span class="macro">panic!</span>(<span class="string">"Open /dev/sgx failed"</span>) |
| } |
| } |
| |
| <span class="doccomment">/// Create report data. |
| </span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>create_sgx_report_data(pub_k: EcPublicKey) -> ReportData { |
| <span class="macro">debug!</span>(<span class="string">"create_sgx_report_data"</span>); |
| <span class="kw">let </span><span class="kw-2">mut </span>report_data: ReportData = ReportData::default(); |
| <span class="kw">let </span><span class="kw-2">mut </span>pub_k_gx = pub_k.public_key().gx; |
| pub_k_gx.reverse(); |
| <span class="kw">let </span><span class="kw-2">mut </span>pub_k_gy = pub_k.public_key().gy; |
| pub_k_gy.reverse(); |
| report_data.d[..<span class="number">32</span>].clone_from_slice(<span class="kw-2">&</span>pub_k_gx); |
| report_data.d[<span class="number">32</span>..].clone_from_slice(<span class="kw-2">&</span>pub_k_gy); |
| report_data |
| } |
| |
| <span class="macro">macro_rules! </span>do_ioctl { |
| (<span class="macro-nonterminal">$cmd</span>:expr,<span class="macro-nonterminal">$arg</span>:expr) => { |
| <span class="kw">let </span><span class="kw-2">mut </span>retries = <span class="number">0</span>; |
| <span class="kw">let </span><span class="kw-2">mut </span>ret = -<span class="number">1</span>; |
| <span class="kw">let </span>fd = get_dev_fd(); |
| <span class="macro">log::debug!</span>(<span class="string">"begin do_ioctl {}"</span>, <span class="macro">stringify!</span>(<span class="macro-nonterminal">$cmd</span>)); |
| <span class="kw">while </span>retries < IOCTL_MAX_RETRIES { |
| ret = <span class="kw">unsafe </span>{ libc::ioctl(fd, <span class="macro-nonterminal">$cmd</span>, <span class="macro-nonterminal">$arg</span>) }; |
| <span class="kw">if </span>ret == <span class="number">0 </span>{ |
| <span class="kw">break</span>; |
| <span class="comment">// EBUSY 16 |
| </span>} |
| std::thread::sleep(std::time::Duration::from_secs(<span class="number">2</span>)); |
| retries += <span class="number">1</span>; |
| } |
| <span class="kw">if </span>retries == IOCTL_MAX_RETRIES { |
| <span class="kw">return </span><span class="prelude-val">Err</span>(PlatformError::Ioctl(<span class="macro">stringify!</span>(<span class="macro-nonterminal">$cmd</span>).to_string(), ret)); |
| } |
| }; |
| } |
| |
| <span class="doccomment">/// Get quote with attestation key ID and enclave's local report. |
| </span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>get_sgx_epid_quote(spid: <span class="kw-2">&</span>Spid, report_data: ReportData) -> <span class="prelude-ty">Result</span><Vec<u8>> { |
| <span class="kw">let </span>sigrl_ptr: <span class="kw-2">*const </span>u8 = std::ptr::null(); |
| <span class="kw">let </span>quote_len: u32 = <span class="number">4096</span>; |
| <span class="kw">let </span><span class="kw-2">mut </span>quote = <span class="macro">vec!</span>[<span class="number">0u8</span>; quote_len <span class="kw">as </span>usize]; |
| <span class="kw">let </span><span class="kw-2">mut </span>qe_report_info = QeReportInfo::default(); |
| <span class="kw">let </span><span class="kw-2">mut </span>quote_nonce = QuoteNonce::default(); |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>rng = RdRand::new().map_err(PlatformError::RngError)<span class="question-mark">?</span>; |
| rng.fill_bytes(<span class="kw-2">&mut </span>quote_nonce.rand); |
| qe_report_info.nonce = quote_nonce; |
| |
| <span class="macro">debug!</span>(<span class="string">"SGX_CMD_NUM_GEN_EPID_QUOTE"</span>); |
| <span class="kw">let </span><span class="kw-2">mut </span>quote_arg = IoctlGenEPIDQuoteArg { |
| report_data, <span class="comment">// Input |
| </span>quote_type: QuoteSignType::Linkable, <span class="comment">// Input |
| </span>spid: spid.to_owned(), <span class="comment">// Input |
| </span>nonce: quote_nonce, <span class="comment">// Input |
| </span>sigrl_ptr, <span class="comment">// Input (optional) |
| </span>sigrl_len: <span class="number">0</span>, <span class="comment">// Input (optional) |
| </span>quote_buf_len: quote_len, <span class="comment">// Input |
| </span>quote_buf: quote.as_mut_ptr(), <span class="comment">// Output |
| </span>}; |
| |
| <span class="comment">// gen quote and check qe_quote and quote nonce |
| </span><span class="macro">do_ioctl!</span>(SGX_CMD_NUM_GEN_EPID_QUOTE, <span class="kw-2">&mut </span>quote_arg); |
| <span class="kw">let </span>sgx_quote = <span class="kw">unsafe </span>{ <span class="kw-2">&*</span>(quote.as_ptr() <span class="kw">as </span><span class="kw-2">*const </span>Quote) }; |
| <span class="kw">let </span>quote_size = std::mem::size_of::<Quote>() + sgx_quote.signature_len <span class="kw">as </span>usize; |
| <span class="kw">if </span>quote_size > quote.len() { |
| <span class="kw">return </span><span class="prelude-val">Err</span>(PlatformError::GetQuote(<span class="string">"wrong quote size"</span>.to_string())); |
| } |
| <span class="kw">let </span>quote_buf = quote[..quote_size].to_vec(); |
| <span class="prelude-val">Ok</span>(quote_buf) |
| } |
| |
| <span class="doccomment">/// Get dcap quote |
| </span><span class="kw">pub</span>(<span class="kw">crate</span>) <span class="kw">fn </span>get_sgx_dcap_quote(_spid: <span class="kw-2">&</span>Spid, report_data: ReportData) -> <span class="prelude-ty">Result</span><Vec<u8>> { |
| <span class="kw">let </span><span class="kw-2">mut </span>quote_len: u32 = <span class="number">0</span>; |
| <span class="macro">do_ioctl!</span>(SGXIOC_GET_DCAP_QUOTE_SIZE, <span class="kw-2">&mut </span>quote_len); |
| <span class="kw">let </span><span class="kw-2">mut </span>quote_buf = <span class="macro">vec!</span>[<span class="number">0</span>; quote_len <span class="kw">as </span>usize]; |
| <span class="kw">let </span><span class="kw-2">mut </span>quote_arg: IoctlGenDCAPQuoteArg = IoctlGenDCAPQuoteArg { |
| report_data: <span class="kw-2">&</span>report_data <span class="kw">as _</span>, |
| quote_size: <span class="kw-2">&mut </span>quote_len, |
| quote_buf: quote_buf.as_mut_ptr(), |
| }; |
| <span class="macro">do_ioctl!</span>(SGXIOC_GEN_DCAP_QUOTE, <span class="kw-2">&mut </span>quote_arg); |
| <span class="prelude-val">Ok</span>(quote_buf) |
| } |
| </code></pre></div> |
| </section></div></main><div id="rustdoc-vars" data-root-path="../../../../" data-current-crate="teaclave_attestation" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.66.0-nightly (5c8bff74b 2022-10-21)" ></div></body></html> |
