[TS] Clean up wasm environment exports

[ldk-java] / typescript_strings.py

diff --git a/typescript_strings.py b/typescript_strings.py
index 8002aa7c16ad3309cc32b5fe81a512c8488c55ac..79976674bdcb295d2a1d6a2cdab3826bc60a89f3 100644 (file)
--- a/typescript_strings.py
+++ b/typescript_strings.py
@@ -366,21 +366,44 @@ var js_objs: Array<WeakRef<object>> = [];
 var js_invoke: Function;
 
 imports.wasi_snapshot_preview1 = {
-       "fd_write" : () => {
-               console.log("ABORT");
+       "fd_write": (fd: number, iovec_array_ptr: number, iovec_array_len: number) => {
+               // This should generally only be used to print panic messages
+               console.log("FD_WRITE to " + fd + " in " + iovec_array_len + " chunks.");
+               const ptr_len_view = new Uint32Array(wasm.memory.buffer, iovec_array_ptr, iovec_array_len * 2);
+               for (var i = 0; i < iovec_array_len; i++) {
+                       const bytes_view = new Uint8Array(wasm.memory.buffer, ptr_len_view[i*2], ptr_len_view[i*2+1]);
+                       console.log(String.fromCharCode(...bytes_view));
+               }
+               return 0;
        },
-       "random_get" : () => {
-               console.log("RAND GET");
+       "random_get": (buf_ptr: number, buf_len: number) => {
+               const buf = new Uint8Array(wasm.memory.buffer, buf_ptr, buf_len);
+               crypto.getRandomValues(buf);
+               return 0;
        },
-       "environ_sizes_get" : () => {
+       "environ_sizes_get": (environ_var_count_ptr: number, environ_len_ptr: number) => {
+               // This is called before fd_write to format + print panic messages
                console.log("wasi_snapshot_preview1:environ_sizes_get");
+               const out_count_view = new Uint32Array(wasm.memory.buffer, environ_var_count_ptr, 1);
+               out_count_view[0] = 1;
+               const out_len_view = new Uint32Array(wasm.memory.buffer, environ_len_ptr, 1);
+               out_len_view[0] = "RUST_BACKTRACE=1".length + 1; // Note that string must be NULL-terminated
+               return 0;
+       },
+       "environ_get": (environ_ptr: number, environ_buf_ptr: number) => {
+               // This is called before fd_write to format + print panic messages
+               console.log("wasi_snapshot_preview1:environ_get");
+               const out_ptrs = new Uint32Array(wasm.memory.buffer, environ_ptr, 2);
+               out_ptrs[0] = environ_buf_ptr;
+               out_ptrs[1] = "RUST_BACKTRACE=1".length;
+               const out_environ = new Uint8Array(wasm.memory.buffer, environ_buf_ptr, out_ptrs[1]);
+               for (var i = 0; i < out_ptrs[1]; i++) { out_environ[i] = "RUST_BACKTRACE=1".codePointAt(i); }
+               out_environ[out_ptrs[1]] = 0;
+               return 0;
        },
        "proc_exit" : () => {
                console.log("wasi_snapshot_preview1:proc_exit");
        },
-       "environ_get" : () => {
-               console.log("wasi_snapshot_preview1:environ_get");
-       },
 };
 
 var wasm: any = null;
@@ -389,6 +412,7 @@ let isWasmInitialized: boolean = false;
 
         if target == Target.NODEJS:
             res += """import * as fs from 'fs';
+import { webcrypto as crypto } from 'crypto';
 export async function initializeWasm(path: string) {
        const source = fs.readFileSync(path);
        imports.env["js_invoke_function"] = js_invoke;