implement arpainet

Cargo.lock

@@ -6,6 +6,17 @@ dependencies = [
  "winapi 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "arpainet"
+version = "0.1.0"
+dependencies = [
+ "cbindgen 0.5.2",
+ "errno 0.1.0",
+ "netinet 0.1.0",
+ "platform 0.1.0",
+ "sys_socket 0.1.0",
+]
+
 [[package]]
 name = "atty"
 version = "0.2.10"
@@ -29,7 +40,7 @@ dependencies = [
  "log 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde 1.0.70 (registry+https://github.com/rust-lang/crates.io-index)",
  "serde_derive 1.0.21 (registry+https://github.com/rust-lang/crates.io-index)",
- "serde_json 1.0.22 (registry+https://github.com/rust-lang/crates.io-index)",
+ "serde_json 1.0.24 (registry+https://github.com/rust-lang/crates.io-index)",
  "standalone-syn 0.13.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "tempdir 0.3.7 (registry+https://github.com/rust-lang/crates.io-index)",
  "toml 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -62,7 +73,7 @@ dependencies = [
 [[package]]
 name = "compiler_builtins"
 version = "0.1.0"
-source = "git+https://github.com/rust-lang-nursery/compiler-builtins.git#8142298fe6827fe957e67de8d272a4ceb2317f45"
+source = "git+https://github.com/rust-lang-nursery/compiler-builtins.git#5d370bb352c915225981d89b80227afa4836cb93"
 
 [[package]]
 name = "crt0"
@@ -166,7 +177,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 
 [[package]]
 name = "lazy_static"
-version = "1.0.1"
+version = "1.0.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "spin 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -286,6 +297,7 @@ dependencies = [
 name = "relibc"
 version = "0.1.0"
 dependencies = [
+ "arpainet 0.1.0",
  "cc 1.0.18 (registry+https://github.com/rust-lang/crates.io-index)",
  "compiler_builtins 0.1.0 (git+https://github.com/rust-lang-nursery/compiler-builtins.git)",
  "ctype 0.1.0",
@@ -368,7 +380,7 @@ dependencies = [
 
 [[package]]
 name = "serde_json"
-version = "1.0.22"
+version = "1.0.24"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 dependencies = [
  "dtoa 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -418,7 +430,7 @@ dependencies = [
  "cbindgen 0.5.2",
  "errno 0.1.0",
  "fcntl 0.1.0",
- "lazy_static 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "lazy_static 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "platform 0.1.0",
  "string 0.1.0",
  "va_list 0.1.0",
@@ -683,7 +695,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum fuchsia-zircon 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "2e9763c69ebaae630ba35f74888db465e49e259ba1bc0eda7d06f4a067615d82"
 "checksum fuchsia-zircon-sys 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "3dcaa9ae7725d12cdb85b3ad99a434db70b468c09ded17e012d86b5c1010f7a7"
 "checksum itoa 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)" = "5adb58558dcd1d786b5f0bd15f3226ee23486e24b7b58304b60f64dc68e62606"
-"checksum lazy_static 1.0.1 (registry+https://github.com/rust-lang/crates.io-index)" = "e6412c5e2ad9584b0b8e979393122026cdd6d2a80b933f890dcd694ddbe73739"
+"checksum lazy_static 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "fb497c35d362b6a331cfd94956a07fc2c78a4604cdbee844a81170386b996dd3"
 "checksum libc 0.2.42 (registry+https://github.com/rust-lang/crates.io-index)" = "b685088df2b950fccadf07a7187c8ef846a959c142338a48f9dc0b94517eb5f1"
 "checksum log 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)" = "e19e8d5c34a3e0e2223db8e060f9e8264aeeb5c5fc64a4ee9965c062211c024b"
 "checksum log 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)" = "61bd98ae7f7b754bc53dca7d44b604f733c6bba044ea6f41bc8d89272d8161d2"
@@ -699,7 +711,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 "checksum serde 1.0.70 (registry+https://github.com/rust-lang/crates.io-index)" = "0c3adf19c07af6d186d91dae8927b83b0553d07ca56cbf7f2f32560455c91920"
 "checksum serde_derive 1.0.21 (registry+https://github.com/rust-lang/crates.io-index)" = "652bc323d694dc925829725ec6c890156d8e70ae5202919869cb00fe2eff3788"
 "checksum serde_derive_internals 0.17.0 (registry+https://github.com/rust-lang/crates.io-index)" = "32f1926285523b2db55df263d2aa4eb69ddcfa7a7eade6430323637866b513ab"
-"checksum serde_json 1.0.22 (registry+https://github.com/rust-lang/crates.io-index)" = "84b8035cabe9b35878adec8ac5fe03d5f6bc97ff6edd7ccb96b44c1276ba390e"
+"checksum serde_json 1.0.24 (registry+https://github.com/rust-lang/crates.io-index)" = "c3c6908c7b925cd6c590358a4034de93dbddb20c45e1d021931459fd419bf0e2"
 "checksum spin 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)" = "14db77c5b914df6d6173dda9a3b3f5937bd802934fa5edaf934df06a3491e56f"
 "checksum standalone-quote 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)" = "dcedac1d6d98e7e9d1d6e628f5635af9566688ae5f6cea70a3976f495ae8d839"
 "checksum standalone-syn 0.13.0 (registry+https://github.com/rust-lang/crates.io-index)" = "115808f5187c07c23cb93eee49d542fae54c6e8285d3a24c6ff683fcde9243db"

Cargo.toml

@@ -14,6 +14,7 @@ members = ["src/crt0"]
 cc = "1.0.17"
 
 [dependencies]
+arpainet = { path = "src/arpainet" }
 ctype = { path = "src/ctype" }
 errno = { path = "src/errno" }
 fcntl = { path = "src/fcntl" }

src/arpainet/Cargo.toml

@@ -0,0 +1,14 @@
+[package]
+name = "arpainet"
+version = "0.1.0"
+authors = ["Jeremy Soller <[email protected]>"]
+build = "build.rs"
+
+[build-dependencies]
+cbindgen = { path = "../../cbindgen" }
+
+[dependencies]
+platform = { path = "../platform" }
+errno = { path = "../errno" }
+sys_socket = { path = "../sys_socket" }
+netinet = { path = "../netinet" }

src/arpainet/build.rs

@@ -0,0 +1,11 @@
+extern crate cbindgen;
+
+use std::{env, fs};
+
+fn main() {
+    let crate_dir = env::var("CARGO_MANIFEST_DIR").expect("CARGO_MANIFEST_DIR not set");
+    fs::create_dir_all("../../target/include").expect("failed to create include directory");
+    cbindgen::generate(crate_dir)
+        .expect("failed to generate bindings")
+        .write_to_file("../../target/include/arpa/inet.h");
+}

src/arpainet/cbindgen.toml

@@ -0,0 +1,7 @@
+sys_includes = ["stddef.h", "sys/socket.h", "netinet/in.h"]
+include_guard = "_ARPAINET_H"
+language = "C"
+style = "Tag"
+
+[enum]
+prefix_with_name = true

src/arpainet/src/lib.rs

@@ -0,0 +1,132 @@
+//! arpainet implementation for Redox, following http://pubs.opengroup.org/onlinepubs/7908799/xsh/arpainet.h.html
+
+#![no_std]
+#![feature(alloc)]
+
+#[macro_use]
+extern crate alloc;
+
+extern crate errno;
+extern crate netinet;
+extern crate platform;
+extern crate sys_socket;
+
+use core::str::FromStr;
+use core::{mem, ptr, slice, str};
+use errno::*;
+pub use netinet::in_h::*;
+use platform::types::*;
+use platform::{c_str, socklen_t, AF_INET};
+
+#[no_mangle]
+pub extern "C" fn htonl(hostlong: u32) -> u32 {
+    hostlong.to_be()
+}
+
+#[no_mangle]
+pub extern "C" fn htons(hostshort: u16) -> u16 {
+    hostshort.to_be()
+}
+
+#[no_mangle]
+pub extern "C" fn ntohl(netlong: u32) -> u32 {
+    u32::from_be(netlong)
+}
+
+#[no_mangle]
+pub extern "C" fn ntohs(netshort: u16) -> u16 {
+    u16::from_be(netshort)
+}
+
+static mut NTOA_ADDR: [c_char; 16] = [0; 16];
+
+#[no_mangle]
+pub unsafe extern "C" fn inet_aton(cp: *const c_char, inp: *mut in_addr) -> c_int {
+    // TODO: octal/hex
+    inet_pton(AF_INET, cp, inp as *mut c_void)
+}
+
+#[no_mangle]
+pub unsafe extern "C" fn inet_ntoa(addr: in_addr) -> *const c_char {
+    inet_ntop(
+        AF_INET,
+        &addr as *const in_addr as *const c_void,
+        NTOA_ADDR.as_mut_ptr(),
+        16,
+    )
+}
+
+#[no_mangle]
+pub unsafe extern "C" fn inet_pton(domain: c_int, src: *const c_char, dest: *mut c_void) -> c_int {
+    if domain != AF_INET {
+        platform::errno = EAFNOSUPPORT;
+        -1
+    } else {
+        let mut s_addr = slice::from_raw_parts_mut(
+            &mut (*(dest as *mut in_addr)).s_addr as *mut _ as *mut u8,
+            4,
+        );
+        let mut octets = str::from_utf8_unchecked(c_str(src)).split('.');
+        for i in 0..4 {
+            if let Some(n) = octets.next().and_then(|x| u8::from_str(x).ok()) {
+                s_addr[i] = n;
+            } else {
+                return 0;
+            }
+        }
+        if octets.next() == None {
+            1 // Success
+        } else {
+            0
+        }
+    }
+}
+
+#[no_mangle]
+pub unsafe extern "C" fn inet_ntop(
+    domain: c_int,
+    src: *const c_void,
+    dest: *mut c_char,
+    size: socklen_t,
+) -> *const c_char {
+    if domain != AF_INET {
+        platform::errno = EAFNOSUPPORT;
+        ptr::null()
+    } else if size < 16 {
+        platform::errno = ENOSPC;
+        ptr::null()
+    } else {
+        let s_addr = slice::from_raw_parts(
+            &(*(src as *const in_addr)).s_addr as *const _ as *const u8,
+            4,
+        );
+        let addr = format!("{}.{}.{}.{}\0", s_addr[0], s_addr[1], s_addr[2], s_addr[3]);
+        ptr::copy(addr.as_ptr() as *const c_char, dest, addr.len());
+        dest
+    }
+}
+
+#[no_mangle]
+pub extern "C" fn inet_addr(cp: *const c_char) -> in_addr_t {
+    unimplemented!();
+}
+
+#[no_mangle]
+pub extern "C" fn inet_lnaof(_in: in_addr) -> in_addr_t {
+    unimplemented!();
+}
+
+#[no_mangle]
+pub extern "C" fn inet_makeaddr(net: in_addr_t, lna: in_addr_t) -> in_addr {
+    unimplemented!();
+}
+
+#[no_mangle]
+pub extern "C" fn inet_netof(_in: in_addr) -> in_addr_t {
+    unimplemented!();
+}
+
+#[no_mangle]
+pub extern "C" fn inet_network(cp: *const c_char) -> in_addr_t {
+    unimplemented!();
+}

src/lib.rs

@@ -6,6 +6,7 @@
 //extern crate compiler_builtins;
 extern crate platform;
 
+pub extern crate arpainet;
 pub extern crate ctype;
 pub extern crate errno;
 pub extern crate fcntl;

src/netinet/in/cbindgen.toml

@@ -1,6 +1,6 @@
 sys_includes = ["sys/types.h", "sys/socket.h"]
 include_guard = "_NETINET_IN_H"
-style = "Tag"
+style = "Both"
 language = "C"
 
 [export]

src/netinet/src/lib.rs

@@ -1,3 +1,3 @@
 #![no_std]
 
-extern crate in_h;
+pub extern crate in_h;

tests/.gitignore

@@ -3,6 +3,7 @@
 /gen/
 alloc
 args
+arpainet
 asctime
 assert
 atof

tests/Makefile

@@ -1,5 +1,6 @@
 # Binaries that should generate the same output every time
 EXPECT_BINS=\
+	arpainet \
 	assert \
 	atof \
 	atoi \

tests/arpainet.c

@@ -0,0 +1,24 @@
+#include <arpa/inet.h>
+#include <assert.h>
+#include <string.h>
+#include <stdlib.h>
+
+int main(int argc, char** argv) {
+    uint32_t hl = 0xBADFACED;
+    uint32_t nl = htonl(hl);
+    assert(nl == 0xEDACDFBA);
+    hl = ntohl(nl);
+    assert(hl == 0xBADFACED);
+
+    uint16_t hs = 0xDEAD;
+    uint16_t ns = htons(hs);
+    assert(ns == 0xADDE);
+    hs = ntohs(ns);
+    assert(hs == 0xDEAD);
+
+    const char* addr_str = "8.8.4.4";
+    struct in_addr* addr = malloc(sizeof addr);
+    inet_aton(addr_str, addr);
+    assert(strcmp(inet_ntoa(*addr), addr_str) == 0);
+
+}