| <!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/sunhe/incubator-teaclave/third_party/rust-sgx-sdk/sgx_libc/src/linux/ocall/net.rs`."><meta name="keywords" content="rust, rustlang, rust-lang"><title>net.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="../../../../sgx_libc/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="../../../../sgx_libc/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">// 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.. |
| |
| </span><span class="kw">use </span><span class="kw">crate</span>::linux::<span class="kw-2">*</span>; |
| <span class="kw">use </span>alloc::boxed::Box; |
| <span class="kw">use </span>alloc::vec::Vec; |
| <span class="kw">use </span>core::mem; |
| <span class="kw">use </span>core::mem::ManuallyDrop; |
| <span class="kw">use </span>core::ptr; |
| <span class="kw">use </span>core::slice; |
| <span class="kw">use </span>sgx_ffi::c_str::CStr; |
| <span class="kw">use </span>sgx_oc::linux::ocall; |
| <span class="kw">use </span>sgx_oc::linux::ocall::{AddrInfoHints, OCallError}; |
| <span class="kw">use </span>sgx_trts::trts::is_within_enclave; |
| |
| <span class="attribute">#[no_mangle] |
| </span><span class="kw">pub unsafe extern </span><span class="string">"C" </span><span class="kw">fn </span>getaddrinfo( |
| node: <span class="kw-2">*const </span>c_char, |
| service: <span class="kw-2">*const </span>c_char, |
| hints: <span class="kw-2">*const </span>addrinfo, |
| res: <span class="kw-2">*mut *mut </span>addrinfo, |
| ) -> c_int { |
| <span class="kw">let </span>node_opt = <span class="kw">if </span>!node.is_null() { |
| <span class="prelude-val">Some</span>(CStr::from_ptr(node)) |
| } <span class="kw">else </span>{ |
| <span class="prelude-val">None |
| </span>}; |
| |
| <span class="kw">let </span>service_opt = <span class="kw">if </span>!service.is_null() { |
| <span class="prelude-val">Some</span>(CStr::from_ptr(service)) |
| } <span class="kw">else </span>{ |
| <span class="prelude-val">None |
| </span>}; |
| |
| <span class="kw">let </span>hints_opt = <span class="kw">if </span>!hints.is_null() { |
| <span class="kw">if </span>!is_within_enclave(hints <span class="kw">as </span><span class="kw-2">*const </span>u8, mem::size_of::<addrinfo>()) { |
| set_errno(EINVAL); |
| <span class="kw">return </span>EAI_SYSTEM; |
| } |
| <span class="prelude-val">Some</span>(AddrInfoHints::from(<span class="kw-2">*</span>hints)) |
| } <span class="kw">else </span>{ |
| <span class="prelude-val">None |
| </span>}; |
| |
| <span class="kw">if </span>res.is_null() || !is_within_enclave(res <span class="kw">as </span><span class="kw-2">*const </span>u8, mem::size_of::<<span class="kw-2">*mut </span>addrinfo>()) { |
| set_errno(EINVAL); |
| <span class="kw">return </span>EAI_SYSTEM; |
| } |
| |
| <span class="kw">let </span>result = ocall::getaddrinfo(node_opt, service_opt, hints_opt).map_err(|e| <span class="kw">match </span>e { |
| OCallError::GaiError(err) => err, |
| <span class="kw">_ </span>=> EAI_SYSTEM, |
| }); |
| |
| <span class="kw">if let </span><span class="prelude-val">Ok</span>(addrinfo) = result { |
| <span class="kw">let </span><span class="kw-2">mut </span>addrinfo_vec: Vec<ManuallyDrop<Box<addrinfo>>> = Vec::new(); |
| |
| <span class="kw">for </span>addr <span class="kw">in </span>addrinfo.iter() { |
| <span class="kw">let </span><span class="kw-2">mut </span>info = addrinfo { |
| ai_flags: addr.flags, |
| ai_family: addr.family, |
| ai_socktype: addr.socktype, |
| ai_protocol: addr.protocol, |
| ai_addrlen: <span class="number">0</span>, |
| ai_addr: ptr::null_mut(), |
| ai_canonname: ptr::null_mut(), |
| ai_next: ptr::null_mut(), |
| }; |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>addr_box = ManuallyDrop::new(Box::<[u8]>::from(addr.addr.as_bytes())); |
| info.ai_addrlen = addr.addr.addr_len() <span class="kw">as </span>u32; |
| info.ai_addr = addr_box.as_mut_ptr() <span class="kw">as </span><span class="kw-2">*mut </span>sockaddr; |
| |
| addrinfo_vec.push(ManuallyDrop::new(Box::new(info))); |
| } |
| |
| <span class="kw-2">*</span>res = ptr::null_mut(); |
| <span class="kw">if </span>!addrinfo_vec.is_empty() { |
| <span class="kw">for </span>i <span class="kw">in </span><span class="number">0</span>..addrinfo_vec.len() - <span class="number">1 </span>{ |
| addrinfo_vec[i].ai_next = addrinfo_vec[i + <span class="number">1</span>].as_mut() <span class="kw">as </span><span class="kw-2">*mut </span>addrinfo; |
| } |
| |
| <span class="kw">let </span>res_ptr = addrinfo_vec[<span class="number">0</span>].as_mut() <span class="kw">as </span><span class="kw-2">*mut </span>addrinfo; |
| <span class="kw-2">*</span>res = res_ptr; |
| } |
| <span class="number">0 |
| </span>} <span class="kw">else </span>{ |
| result.err().unwrap() |
| } |
| } |
| |
| <span class="attribute">#[no_mangle] |
| </span><span class="kw">pub unsafe extern </span><span class="string">"C" </span><span class="kw">fn </span>freeaddrinfo(res: <span class="kw-2">*mut </span>addrinfo) { |
| <span class="kw">if </span>res.is_null() { |
| <span class="kw">return</span>; |
| } |
| |
| <span class="kw">let </span><span class="kw-2">mut </span>cur_ptr: <span class="kw-2">*mut </span>addrinfo = res; |
| <span class="kw">let </span><span class="kw-2">mut </span>addrinfo_vec: Vec<Box<addrinfo>> = Vec::new(); |
| <span class="kw">while </span>!cur_ptr.is_null() { |
| <span class="kw">if </span>!is_within_enclave(cur_ptr <span class="kw">as </span><span class="kw-2">*const </span>u8, mem::size_of::<addrinfo>()) { |
| <span class="kw">continue</span>; |
| } |
| |
| <span class="kw">let </span>cur: <span class="kw-2">&</span>addrinfo = <span class="kw-2">&*</span>cur_ptr; |
| |
| <span class="kw">if </span>!cur.ai_addr.is_null() |
| && cur.ai_addrlen > <span class="number">0 |
| </span>&& is_within_enclave(cur.ai_addr <span class="kw">as </span><span class="kw-2">*const </span>u8, cur.ai_addrlen <span class="kw">as </span>usize) |
| { |
| <span class="kw">let </span>addr_slice = |
| slice::from_raw_parts_mut(cur.ai_addr <span class="kw">as </span><span class="kw-2">*mut </span>u8, cur.ai_addrlen <span class="kw">as </span>usize); |
| <span class="kw">let </span>addr_box = Box::from_raw(addr_slice <span class="kw">as </span><span class="kw-2">*mut </span>[u8]); |
| drop(addr_box); |
| } |
| |
| addrinfo_vec.push(Box::from_raw(cur_ptr)); |
| cur_ptr = cur.ai_next; |
| } |
| drop(addrinfo_vec); |
| } |
| </code></pre></div> |
| </section></div></main><div id="rustdoc-vars" data-root-path="../../../../" data-current-crate="sgx_libc" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.66.0-nightly (5c8bff74b 2022-10-21)" ></div></body></html> |