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improve emscripten sockets and networking

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This commit is contained in:
Mark McCaskey
2019-06-28 17:14:00 -07:00
parent cb5d1b42ec
commit 4fcb3c4c83
4 changed files with 344 additions and 58 deletions
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44
lib/emscripten/src/syscalls/unix.rs
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@ -434,6 +434,9 @@ pub fn ___syscall54(ctx: &mut Ctx, _which: c_int, mut varargs: VarArgs) -> c_int
}
}
const SOCK_NON_BLOCK: i32 = 2048;
const SOCK_CLOEXC: i32 = 0x80000;
// socketcall
#[allow(clippy::cast_ptr_alignment)]
pub fn ___syscall102(ctx: &mut Ctx, _which: c_int, mut varargs: VarArgs) -> c_int {
@ -467,13 +470,22 @@ pub fn ___syscall102(ctx: &mut Ctx, _which: c_int, mut varargs: VarArgs) -> c_in
debug!("socket: socket");
// socket (domain: c_int, ty: c_int, protocol: c_int) -> c_int
let domain: i32 = socket_varargs.get(ctx);
let ty: i32 = socket_varargs.get(ctx);
let ty_and_flags: i32 = socket_varargs.get(ctx);
let protocol: i32 = socket_varargs.get(ctx);
let ty = ty_and_flags & (!SOCK_NON_BLOCK) & (!SOCK_CLOEXC);
let fd = unsafe { socket(domain, ty, protocol) };
// set_cloexec
unsafe {
ioctl(fd, FIOCLEX);
};
if ty_and_flags & SOCK_CLOEXC != 0 {
// set_cloexec
unsafe {
ioctl(fd, FIOCLEX);
};
}
if ty_and_flags & SOCK_NON_BLOCK != 0 {
// do something here
unimplemented!("non blocking sockets");
}
type T = u32;
let payload = 1 as *const T as _;
@ -620,6 +632,14 @@ pub fn ___syscall102(ctx: &mut Ctx, _which: c_int, mut varargs: VarArgs) -> c_in
let address_len: u32 = socket_varargs.get(ctx);
let buf_addr = emscripten_memory_pointer!(ctx.memory(0), buf) as _;
let address = emscripten_memory_pointer!(ctx.memory(0), address) as *mut sockaddr;
dbg!(address);
unsafe {
dbg!(*(address as *mut u8));
dbg!(*(address as *mut u8).add(1));
for i in 0..14 {
dbg!(*(address as *mut u8).add(1 + i));
}
}
let address_len_addr =
emscripten_memory_pointer!(ctx.memory(0), address_len) as *mut socklen_t;
unsafe {
@ -642,18 +662,18 @@ pub fn ___syscall102(ctx: &mut Ctx, _which: c_int, mut varargs: VarArgs) -> c_in
// setsockopt (socket: c_int, level: c_int, name: c_int, value: *const c_void, option_len: socklen_t) -> c_int
let socket = socket_varargs.get(ctx);
// SOL_SOCKET = 0xffff (BSD, Linux)
let level: i32 = SOL_SOCKET;
let _: u32 = socket_varargs.get(ctx);
// SO_REUSEADDR = 0x4 (BSD, Linux)
let name: i32 = SO_REUSEADDR;
let _: u32 = socket_varargs.get(ctx);
let level: i32 = socket_varargs.get(ctx);
// SOL_SOCKET = 0xffff (BSD, OSX)
let level = if level == 1 { SOL_SOCKET } else { level };
let name: i32 = socket_varargs.get(ctx);
// SO_REUSEADDR = 0x4 (BSD, OSX)
let name = if name == 2 { SO_REUSEADDR } else { name };
let value: u32 = socket_varargs.get(ctx);
let option_len = socket_varargs.get(ctx);
let value_addr = emscripten_memory_pointer!(ctx.memory(0), value) as _; // Endian problem
let ret = unsafe { setsockopt(socket, level, name, value_addr, option_len) };
debug!("=> socketfd: {}, level: {} (SOL_SOCKET/0xffff), name: {} (SO_REUSEADDR/4), value_addr: {:?}, option_len: {} = status: {}", socket, level, name, value_addr, option_len, ret);
debug!("=> socketfd: {}, level: {}, name: {}, value_addr: {:?}, option_len: {} = status: {}", socket, level, name, value_addr, option_len, ret);
ret
}
15 => {