mirror of
https://github.com/fluencelabs/wasmer
synced 2025-06-24 14:11:32 +00:00
remove unix-specific code from code windows sees
This commit is contained in:
Mark McCaskey
240
lib/emscripten/src/env/mod.rs
vendored
240
lib/emscripten/src/env/mod.rs
vendored
@ -14,7 +14,6 @@ use libc::c_char;
|
||||
|
||||
use crate::{allocate_on_stack, EmscriptenData};
|
||||
|
||||
use std::cell::Cell;
|
||||
use std::os::raw::c_int;
|
||||
use wasmer_runtime_core::{
|
||||
memory::ptr::{Array, WasmPtr},
|
||||
@ -22,211 +21,6 @@ use wasmer_runtime_core::{
|
||||
vm::Ctx,
|
||||
};
|
||||
|
||||
#[derive(Debug, Clone, Copy)]
|
||||
#[repr(C)]
|
||||
pub struct EmAddrInfo {
|
||||
// int
|
||||
ai_flags: i32,
|
||||
// int
|
||||
ai_family: i32,
|
||||
// int
|
||||
ai_socktype: i32,
|
||||
// int
|
||||
ai_protocol: i32,
|
||||
// socklen_t
|
||||
ai_addrlen: u32,
|
||||
// struct sockaddr*
|
||||
ai_addr: WasmPtr<EmSockAddr>,
|
||||
// char*
|
||||
ai_canonname: WasmPtr<c_char, Array>,
|
||||
// struct addrinfo*
|
||||
ai_next: WasmPtr<EmAddrInfo>,
|
||||
}
|
||||
|
||||
unsafe impl ValueType for EmAddrInfo {}
|
||||
|
||||
// NOTE: from looking at emscripten JS, this should be a union
|
||||
// TODO: review this, highly likely to have bugs
|
||||
#[derive(Debug, Clone, Copy)]
|
||||
#[repr(C)]
|
||||
pub struct EmSockAddr {
|
||||
sa_family: i16,
|
||||
sa_data: [c_char; 14],
|
||||
}
|
||||
|
||||
unsafe impl ValueType for EmSockAddr {}
|
||||
|
||||
pub fn _getaddrinfo(
|
||||
ctx: &mut Ctx,
|
||||
node_ptr: WasmPtr<c_char>,
|
||||
service_str_ptr: WasmPtr<c_char>,
|
||||
hints_ptr: WasmPtr<EmAddrInfo>,
|
||||
res_val_ptr: WasmPtr<WasmPtr<EmAddrInfo>>,
|
||||
) -> i32 {
|
||||
use libc::{addrinfo, freeaddrinfo};
|
||||
debug!("emscripten::_getaddrinfo");
|
||||
let memory = ctx.memory(0);
|
||||
debug!(" => node = {}", unsafe {
|
||||
node_ptr
|
||||
.deref(memory)
|
||||
.map(|np| {
|
||||
std::ffi::CStr::from_ptr(np as *const Cell<c_char> as *const c_char)
|
||||
.to_string_lossy()
|
||||
})
|
||||
.unwrap_or(std::borrow::Cow::Borrowed("null"))
|
||||
});
|
||||
debug!(" => server_str = {}", unsafe {
|
||||
service_str_ptr
|
||||
.deref(memory)
|
||||
.map(|np| {
|
||||
std::ffi::CStr::from_ptr(np as *const Cell<c_char> as *const c_char)
|
||||
.to_string_lossy()
|
||||
})
|
||||
.unwrap_or(std::borrow::Cow::Borrowed("null"))
|
||||
});
|
||||
|
||||
let hints = hints_ptr.deref(memory).map(|hints_memory| {
|
||||
let hints_guest = dbg!(hints_memory.get());
|
||||
unsafe {
|
||||
let mut hints_native: addrinfo = std::mem::uninitialized();
|
||||
hints_native.ai_flags = hints_guest.ai_flags;
|
||||
hints_native.ai_family = hints_guest.ai_family;
|
||||
hints_native.ai_socktype = hints_guest.ai_socktype;
|
||||
hints_native.ai_protocol = hints_guest.ai_protocol;
|
||||
hints_native.ai_addrlen = 0;
|
||||
hints_native.ai_addr = std::ptr::null_mut();
|
||||
hints_native.ai_canonname = std::ptr::null_mut();
|
||||
hints_native.ai_next = std::ptr::null_mut();
|
||||
|
||||
hints_native
|
||||
}
|
||||
});
|
||||
|
||||
let mut out_ptr: *mut addrinfo = std::ptr::null_mut();
|
||||
|
||||
// allocate equivalent memory for res_val_ptr
|
||||
let result = unsafe {
|
||||
libc::getaddrinfo(
|
||||
(node_ptr
|
||||
.deref(memory)
|
||||
.map(|m| m as *const Cell<c_char> as *const c_char))
|
||||
.unwrap_or(std::ptr::null()),
|
||||
(service_str_ptr
|
||||
.deref(memory)
|
||||
.map(|m| m as *const Cell<c_char> as *const c_char))
|
||||
.unwrap_or(std::ptr::null()),
|
||||
hints
|
||||
.as_ref()
|
||||
.map(|h| h as *const addrinfo)
|
||||
.unwrap_or(std::ptr::null()),
|
||||
&mut out_ptr as *mut *mut addrinfo,
|
||||
)
|
||||
};
|
||||
if dbg!(result) != 0 {
|
||||
return result;
|
||||
}
|
||||
|
||||
// walk linked list and copy over, freeing them from the kernel
|
||||
let head_of_list = unsafe {
|
||||
let mut current_host_node = out_ptr;
|
||||
let mut head_of_list = None;
|
||||
let mut previous_guest_node: Option<WasmPtr<EmAddrInfo>> = None;
|
||||
|
||||
while !current_host_node.is_null() {
|
||||
let current_guest_node_ptr: WasmPtr<EmAddrInfo> =
|
||||
call_malloc_with_cast(ctx, std::mem::size_of::<EmAddrInfo>() as _);
|
||||
if head_of_list.is_none() {
|
||||
dbg!("Setting head of list");
|
||||
head_of_list = Some(current_guest_node_ptr);
|
||||
}
|
||||
|
||||
// connect list
|
||||
if let Some(prev_guest) = previous_guest_node {
|
||||
let mut pg = prev_guest.deref_mut(ctx.memory(0)).unwrap().get_mut();
|
||||
pg.ai_next = current_guest_node_ptr;
|
||||
dbg!("list connected");
|
||||
}
|
||||
|
||||
// update values
|
||||
|
||||
let host_addrlen = (*current_host_node).ai_addrlen;
|
||||
// allocate addr and copy data
|
||||
let guest_sockaddr_ptr = {
|
||||
let host_sockaddr_ptr = (*current_host_node).ai_addr;
|
||||
let guest_sockaddr_ptr: WasmPtr<EmSockAddr> =
|
||||
call_malloc_with_cast(ctx, host_addrlen as _);
|
||||
let guest_sockaddr = guest_sockaddr_ptr
|
||||
.deref_mut(ctx.memory(0))
|
||||
.unwrap()
|
||||
.get_mut();
|
||||
|
||||
guest_sockaddr.sa_family = (*host_sockaddr_ptr).sa_family as i16;
|
||||
guest_sockaddr.sa_data = (*host_sockaddr_ptr).sa_data.clone();
|
||||
guest_sockaddr_ptr
|
||||
};
|
||||
|
||||
dbg!("Socketaddr allocated");
|
||||
|
||||
// allocate canon name on guest and copy data over
|
||||
let guest_canonname_ptr = {
|
||||
let str_ptr = (*current_host_node).ai_canonname;
|
||||
if !str_ptr.is_null() {
|
||||
let canonname_cstr = dbg!(std::ffi::CStr::from_ptr(str_ptr));
|
||||
let canonname_bytes = canonname_cstr.to_bytes_with_nul();
|
||||
let str_size = dbg!(canonname_bytes.len());
|
||||
let guest_canonname: WasmPtr<c_char, Array> =
|
||||
call_malloc_with_cast(ctx, str_size as _);
|
||||
|
||||
let guest_canonname_writer = guest_canonname
|
||||
.deref(ctx.memory(0), 0, str_size as _)
|
||||
.unwrap();
|
||||
for (i, b) in canonname_bytes.into_iter().enumerate() {
|
||||
guest_canonname_writer[i].set(*b as i8)
|
||||
}
|
||||
|
||||
guest_canonname
|
||||
} else {
|
||||
WasmPtr::new(0)
|
||||
}
|
||||
};
|
||||
|
||||
dbg!("canonname allocated");
|
||||
|
||||
let mut current_guest_node = current_guest_node_ptr
|
||||
.deref_mut(ctx.memory(0))
|
||||
.unwrap()
|
||||
.get_mut();
|
||||
// TODO order these
|
||||
current_guest_node.ai_flags = (*current_host_node).ai_flags;
|
||||
current_guest_node.ai_family = (*current_host_node).ai_family;
|
||||
current_guest_node.ai_socktype = (*current_host_node).ai_socktype;
|
||||
current_guest_node.ai_protocol = (*current_host_node).ai_protocol;
|
||||
current_guest_node.ai_addrlen = host_addrlen;
|
||||
current_guest_node.ai_addr = guest_sockaddr_ptr;
|
||||
current_guest_node.ai_canonname = guest_canonname_ptr;
|
||||
current_guest_node.ai_next = WasmPtr::new(0);
|
||||
|
||||
dbg!("Guest node updated");
|
||||
|
||||
previous_guest_node = Some(current_guest_node_ptr);
|
||||
current_host_node = (*current_host_node).ai_next;
|
||||
dbg!("End of loop bookkeeping finished");
|
||||
}
|
||||
|
||||
dbg!("freeing memory");
|
||||
// this frees all connected nodes on the linked list
|
||||
freeaddrinfo(out_ptr);
|
||||
head_of_list.unwrap_or(WasmPtr::new(0))
|
||||
};
|
||||
|
||||
res_val_ptr
|
||||
.deref(ctx.memory(0))
|
||||
.unwrap()
|
||||
.set(dbg!(head_of_list));
|
||||
|
||||
0
|
||||
}
|
||||
|
||||
pub fn call_malloc(ctx: &mut Ctx, size: u32) -> u32 {
|
||||
get_emscripten_data(ctx).malloc.call(size).unwrap()
|
||||
}
|
||||
@ -362,3 +156,37 @@ pub fn _fpathconf(_ctx: &mut Ctx, _fildes: c_int, name: c_int) -> c_int {
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
#[derive(Debug, Clone, Copy)]
|
||||
#[repr(C)]
|
||||
pub struct EmAddrInfo {
|
||||
// int
|
||||
pub ai_flags: i32,
|
||||
// int
|
||||
pub ai_family: i32,
|
||||
// int
|
||||
pub ai_socktype: i32,
|
||||
// int
|
||||
pub ai_protocol: i32,
|
||||
// socklen_t
|
||||
pub ai_addrlen: u32,
|
||||
// struct sockaddr*
|
||||
pub ai_addr: WasmPtr<EmSockAddr>,
|
||||
// char*
|
||||
pub ai_canonname: WasmPtr<c_char, Array>,
|
||||
// struct addrinfo*
|
||||
pub ai_next: WasmPtr<EmAddrInfo>,
|
||||
}
|
||||
|
||||
unsafe impl ValueType for EmAddrInfo {}
|
||||
|
||||
// NOTE: from looking at emscripten JS, this should be a union
|
||||
// TODO: review this, highly likely to have bugs
|
||||
#[derive(Debug, Clone, Copy)]
|
||||
#[repr(C)]
|
||||
pub struct EmSockAddr {
|
||||
pub sa_family: i16,
|
||||
pub sa_data: [c_char; 14],
|
||||
}
|
||||
|
||||
unsafe impl ValueType for EmSockAddr {}
|
||||
|
||||
Reference in New Issue
Block a user