qodercli2api/wasm.go at master · Liki4/qodercli2api · GitHub

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package main

import (

"context"

"crypto/rand"

_ "embed"

"encoding/binary"

"fmt"

"sync"

"time"

"github.com/tetratelabs/wazero"

"github.com/tetratelabs/wazero/api"

)

//go:embed assets/qoder_auth_wasm_bg.wasm

var authWasm []byte

// fakeU8 emulates a JS Uint8Array. When memBacked it is a view over wasm memory.

type fakeU8 struct {

n int

buf []byte // python-side buffer

mem api.Memory

ptr uint32

memBack bool

}

func (f *fakeU8) read() []byte {

if f.memBack {

b, ok := f.mem.Read(f.ptr, uint32(f.n))

if !ok {

return nil

}

out := make([]byte, f.n)

copy(out, b)

return out

}

return f.buf

}

func (f *fakeU8) write(data []byte) {

if f.memBack {

f.mem.Write(f.ptr, data)

return

}

f.buf = append(f.buf[:0], data...)

}

type nullT struct{}

type globalT struct{}

type cryptoT struct{}

type processT struct{}

type errorT struct{ msg string }

var (

vUndefined any = nil

vNull any = nullT{}

vGlobal any = globalT{}

vCrypto any = cryptoT{}

vProcess any = processT{}

vVersions any = map[string]any{"node": "24.3.0"}

)

// wasmAuth is a wasmtime-style host for qoder_auth_wasm (wasm-bindgen ABI).

type wasmAuth struct {

mu sync.Mutex

mod api.Module

mem api.Memory

mall api.Function

rea api.Function

fre api.Function

ssp api.Function

fns map[string]api.Function

heap []any

heapNext uint32

}

func newWasmAuth(ctx context.Context) (*wasmAuth, error) {

w := &wasmAuth{fns: map[string]api.Function{}}

w.heap = make([]any, 1024)

w.heap = append(w.heap, vUndefined, vNull, true, false)

w.heapNext = 1028

r := wazero.NewRuntime(ctx)

i32 := api.ValueTypeI32

f64 := api.ValueTypeF64

def := func(b wazero.HostModuleBuilder, name string, params, results []api.ValueType, fn func(stack []uint64)) {

gmf := api.GoModuleFunc(func(ctx context.Context, mod api.Module, stack []uint64) {

fn(stack)

})

b.NewFunctionBuilder().WithGoModuleFunction(gmf, params, results).Export(name)

}

hb := r.NewHostModuleBuilder("./qoder_auth_wasm_bg.js")

p1 := []api.ValueType{i32}

p2 := []api.ValueType{i32, i32}

p3 := []api.ValueType{i32, i32, i32}

r1 := []api.ValueType{i32}

none := []api.ValueType{}

def(hb, "__wbindgen_object_drop_ref", p1, none, func(s []uint64) { w.drop(uint32(s[0])) })

def(hb, "__wbg_set_08463b1df38a7e29", p3, r1, func(s []uint64) {

m, k, v := uint32(s[0]), uint32(s[1]), uint32(s[2])

if mv, ok := w.get(m).(map[string]string); ok {

ks, _ := w.get(k).(string)

vs, _ := w.get(v).(string)

mv[ks] = vs

}

s[0] = uint64(w.add(w.get(m)))

})

def(hb, "__wbg_getRandomValues_d49329ff89a07af1", p2, none, func(s []uint64) {

ptr, ln := uint32(s[0]), uint32(s[1])

buf := make([]byte, ln)

rand.Read(buf)

w.mem.Write(ptr, buf)

})

def(hb, "__wbg_getRandomValues_c44a50d8cfdaebeb", p2, none, func(s []uint64) {

if arr, ok := w.get(uint32(s[1])).(*fakeU8); ok {

buf := make([]byte, arr.n)

rand.Read(buf)

arr.write(buf)

}

})

def(hb, "__wbg_crypto_38df2bab126b63dc", p1, r1, func(s []uint64) { s[0] = uint64(w.add(vCrypto)) })

def(hb, "__wbg_process_44c7a14e11e9f69e", p1, r1, func(s []uint64) { s[0] = uint64(w.add(vProcess)) })

def(hb, "__wbg_versions_276b2795b1c6a219", p1, r1, func(s []uint64) { s[0] = uint64(w.add(vVersions)) })

def(hb, "__wbg_node_84ea875411254db1", p1, r1, func(s []uint64) { s[0] = uint64(w.add("24.3.0")) })

def(hb, "__wbg_require_b4edbdcf3e2a1ef0", none, r1, func(s []uint64) { s[0] = uint64(w.add(vCrypto)) })

def(hb, "__wbg_msCrypto_bd5a034af96bcba6", p1, r1, func(s []uint64) { s[0] = uint64(w.add(vCrypto)) })

def(hb, "__wbg_randomFillSync_6c25eac9869eb53c", p2, none, func(s []uint64) {

idx := uint32(s[1])

if arr, ok := w.get(idx).(*fakeU8); ok {

buf := make([]byte, arr.n)

rand.Read(buf)

arr.write(buf)

}

w.drop(idx)

})

def(hb, "__wbg_call_d578befcc3145dee", p3, r1, func(s []uint64) {

fn, arg := w.get(uint32(s[0])), w.get(uint32(s[2]))

if fn == "getRandomValues" {

if arr, ok := arg.(*fakeU8); ok {

buf := make([]byte, arr.n)

rand.Read(buf)

arr.write(buf)

}

s[0] = 0

})

def(hb, "__wbindgen_object_clone_ref", p1, r1, func(s []uint64) { s[0] = uint64(w.add(w.get(uint32(s[0])))) })

def(hb, "__wbg_new_with_length_9cedd08484b73942", p1, r1, func(s []uint64) {

s[0] = uint64(w.add(&fakeU8{n: int(uint32(s[0])), buf: make([]byte, int(uint32(s[0])))}))

})

def(hb, "__wbg_length_0c32cb8543c8e4c8", p1, r1, func(s []uint64) {

v := w.get(uint32(s[0]))

switch t := v.(type) {

case *fakeU8:

s[0] = uint64(t.n)

case string:

s[0] = uint64(len(t))

default:

s[0] = 0

}

})

def(hb, "__wbg_prototypesetcall_3e05eb9545565046", p3, none, func(s []uint64) {

ptr, ln, idx := uint32(s[0]), uint32(s[1]), uint32(s[2])

if src, ok := w.get(idx).(*fakeU8); ok {

data := src.read()

if len(data) > int(ln) {

data = data[:ln]

}

w.mem.Write(ptr, data)

}

})

def(hb, "__wbg_subarray_0f98d3fb634508ad", p3, r1, func(s []uint64) {

idx, begin, end := uint32(s[0]), uint32(s[1]), uint32(s[2])

if arr, ok := w.get(idx).(*fakeU8); ok {

if arr.memBack {

s[0] = uint64(w.add(&fakeU8{n: int(end - begin), mem: w.mem, ptr: arr.ptr + begin, memBack: true}))

return

}

b := arr.read()

if int(end) > len(b) {

end = uint32(len(b))

}

s[0] = uint64(w.add(&fakeU8{n: int(end - begin), buf: append([]byte{}, b[begin:end]...)}))

return

}

s[0] = uint64(w.add(&fakeU8{}))

})

def(hb, "__wbg_new_99cabae501c0a8a0", none, r1, func(s []uint64) { s[0] = uint64(w.add(map[string]string{})) })

def(hb, "__wbg_now_88621c9c9a4f3ffc", none, []api.ValueType{f64}, func(s []uint64) {

s[0] = api.EncodeF64(float64(time.Now().UnixMilli()))

})

for _, name := range []string{"__wbg_static_accessor_GLOBAL_THIS_a1248013d790bf5f", "__wbg_static_accessor_SELF_24f78b6d23f286ea", "__wbg_static_accessor_GLOBAL_f2e0f995a21329ff"} {

nm := name

def(hb, nm, none, r1, func(s []uint64) { s[0] = uint64(w.add(vGlobal)) })

}

def(hb, "__wbg_static_accessor_WINDOW_59fd959c540fe405", none, r1, func(s []uint64) { s[0] = 0 })

def(hb, "__wbg___wbindgen_throw_81fc77679af83bc6", p2, none, func(s []uint64) {

panic(fmt.Errorf("wasm throw: %s", w.readStr(uint32(s[0]), uint32(s[1]))))

})

def(hb, "__wbg_Error_2e59b1b37a9a34c3", p2, r1, func(s []uint64) {

s[0] = uint64(w.add(errorT{w.readStr(uint32(s[0]), uint32(s[1]))}))

})

def(hb, "__wbg___wbindgen_is_object_40c5a80572e8f9d3", p1, r1, func(s []uint64) {

v := w.get(uint32(s[0]))

_, isMap := v.(map[string]string)

_, isU8 := v.(*fakeU8)

_, isGlob := v.(globalT)

_, isCr := v.(cryptoT)

_, isPr := v.(processT)

_, isVer := v.(map[string]any)

if (isMap || isU8 || isGlob || isCr || isPr || isVer) && v != vNull {

s[0] = 1

} else {

s[0] = 0

}

})

def(hb, "__wbg___wbindgen_is_string_b29b5c5a8065ba1a", p1, r1, func(s []uint64) {

_, ok := w.get(uint32(s[0])).(string)

if ok {

s[0] = 1

} else {

s[0] = 0

}

})

def(hb, "__wbg___wbindgen_is_function_49868bde5eb1e745", p1, r1, func(s []uint64) { s[0] = 0 })

def(hb, "__wbg___wbindgen_is_undefined_c0cca72b82b86f4d", p1, r1, func(s []uint64) {

if w.get(uint32(s[0])) == vUndefined {

s[0] = 1

} else {

s[0] = 0

}

})

def(hb, "__wbindgen_cast_0000000000000001", p2, r1, func(s []uint64) {

ptr, ln := uint32(s[0]), uint32(s[1])

s[0] = uint64(w.add(&fakeU8{n: int(ln), mem: w.mem, ptr: ptr, memBack: true}))

})

def(hb, "__wbindgen_cast_0000000000000002", p2, r1, func(s []uint64) {

s[0] = uint64(w.add(w.readStr(uint32(s[0]), uint32(s[1]))))

})

if _, err := hb.Instantiate(ctx); err != nil {

return nil, fmt.Errorf("host module instantiate: %w", err)

}

mod, err := r.InstantiateWithConfig(ctx, authWasm, wazero.NewModuleConfig())

if err != nil {

return nil, fmt.Errorf("auth wasm instantiate: %w", err)

}

w.mod = mod

w.mem = mod.Memory()

w.mall = mod.ExportedFunction("__wbindgen_export2")

w.rea = mod.ExportedFunction("__wbindgen_export3")

w.fre = mod.ExportedFunction("__wbindgen_export4")

w.ssp = mod.ExportedFunction("__wbindgen_add_to_stack_pointer")

for _, n := range []string{

"qodercontext_new", "qodercontext_prepareInferRequest", "qodercontext_prepareRequest",

"qodercontext_refreshAuthFields", "qodercontext_get_external_providers_access",

"requestresult_url", "requestresult_headers", "requestresult_body", "requestresult_headerCount",

"credential_storage_encrypt", "credential_storage_decrypt", "generate_runtime_auth_fields",

"model_cache_decrypt", "decrypt_server_response", "qodercontext_free",

} {

if f := mod.ExportedFunction(n); f != nil {

w.fns[n] = f

}

return w, nil

}

// ---- heap ----

func (w *wasmAuth) add(v any) uint32 {

if w.heapNext == uint32(len(w.heap)) {

w.heap = append(w.heap, uint64(len(w.heap)+1))

}

h := w.heapNext

next, ok := w.heap[h].(uint64)

if !ok || h >= uint32(len(w.heap)) {

w.heapNext = uint32(len(w.heap))

} else {

w.heapNext = uint32(next)

}

for uint32(len(w.heap)) <= h {

w.heap = append(w.heap, vUndefined)

}

w.heap[h] = v

return h

}

func (w *wasmAuth) drop(i uint32) {

if i < 1028 || i >= uint32(len(w.heap)) {

return

}

w.heap[i] = uint64(w.heapNext)

w.heapNext = i

}

func (w *wasmAuth) get(i uint32) any {

if i < uint32(len(w.heap)) {

return w.heap[i]

}

return vUndefined

}

// ---- memory / ABI helpers ----

func (w *wasmAuth) readStr(ptr, ln uint32) string {

b, ok := w.mem.Read(ptr, ln)

if !ok {

return ""

}

return string(b)

}

func (w *wasmAuth) passStr(s string) (uint32, uint32, error) {

b := []byte(s)

res, err := w.mall.Call(context.Background(), uint64(len(b)), 1)

if err != nil {

return 0, 0, err

}

ptr := uint32(res[0])

w.mem.Write(ptr, b)

return ptr, uint32(len(b)), nil

}

func (w *wasmAuth) retStr(retptr uint32) string {

b, _ := w.mem.Read(retptr, 8)

ptr := binary.LittleEndian.Uint32(b)

ln := binary.LittleEndian.Uint32(b[4:])

s := w.readStr(ptr, ln)

w.fre.Call(context.Background(), uint64(ptr), uint64(ln), 1)

return s

}

func (w *wasmAuth) stackAlloc() uint32 {

res, err := w.ssp.Call(context.Background(), ^uint64(15)) // -16

if err != nil {

panic(err)

}

return uint32(res[0])

}

func (w *wasmAuth) stackFree() { w.ssp.Call(context.Background(), 16) }

// callStrFn invokes fn(retptr, ptr,len ...), reads string from [retptr], error flag at +8.

func (w *wasmAuth) callStrFn(name string, strs ...string) (string, error) {

w.mu.Lock()

defer w.mu.Unlock()

fn, ok := w.fns[name]

if !ok {

return "", fmt.Errorf("wasm export %s missing", name)

}

retptr := w.stackAlloc()

defer w.stackFree()

args := []uint64{uint64(retptr)}

for _, s := range strs {

p, l, err := w.passStr(s)

if err != nil {

return "", err

}

args = append(args, uint64(p), uint64(l))

}

if err := fn.CallWithStack(context.Background(), args); err != nil {

return "", fmt.Errorf("%s: %w", name, err)

}

b, _ := w.mem.Read(retptr+8, 4)

if binary.LittleEndian.Uint32(b) != 0 {

return "", fmt.Errorf("%s: wasm returned error", name)

}

return w.retStr(retptr), nil

}

func (w *wasmAuth) credentialDecrypt(blob, key16 string) (string, error) {

return w.callStrFn("credential_storage_decrypt", blob, key16)

}

func (w *wasmAuth) credentialEncrypt(jsonStr, key16 string) (string, error) {

return w.callStrFn("credential_storage_encrypt", jsonStr, key16)

}

func (w *wasmAuth) genRuntimeAuthFields(userInfoJSON string) (string, error) {

return w.callStrFn("generate_runtime_auth_fields", userInfoJSON)

}

func (w *wasmAuth) modelCacheDecrypt(blob, key string) (string, error) {

return w.callStrFn("model_cache_decrypt", blob, key)

}

// newContext creates a QoderContext (machineID, version, userInfoJSON, sceneJSON).

func (w *wasmAuth) newContext(machineID, version, userInfoJSON, sceneJSON string) (uint32, error) {

w.mu.Lock()

defer w.mu.Unlock()

retptr := w.stackAlloc()

defer w.stackFree()

args := []uint64{uint64(retptr)}

for _, s := range []string{machineID, version, userInfoJSON, sceneJSON} {

p, l, err := w.passStr(s)

if err != nil {

return 0, err

}

args = append(args, uint64(p), uint64(l))

}

if err := w.fns["qodercontext_new"].CallWithStack(context.Background(), args); err != nil {

return 0, err

}

b, _ := w.mem.Read(retptr, 12)

ptr := binary.LittleEndian.Uint32(b)

flag := binary.LittleEndian.Uint32(b[8:])

if flag != 0 {

return 0, fmt.Errorf("qodercontext_new error flag set")

}

return ptr, nil

}

type inferResult struct {

URL string

Headers map[string]string

Body string

}

func (w *wasmAuth) prepareInferRequest(ctx uint32, endpoint, bodyJSON, modelKey, modelSource string) (*inferResult, error) {

w.mu.Lock()

defer w.mu.Unlock()

retptr := w.stackAlloc()

defer w.stackFree()

args := []uint64{uint64(retptr), uint64(ctx)}

for _, s := range []string{endpoint, bodyJSON, modelKey, modelSource} {

p, l, err := w.passStr(s)

if err != nil {

return nil, err

}

args = append(args, uint64(p), uint64(l))

}

if err := w.fns["qodercontext_prepareInferRequest"].CallWithStack(context.Background(), args); err != nil {

return nil, err

}

b, _ := w.mem.Read(retptr, 12)

rptr := binary.LittleEndian.Uint32(b)

flag := binary.LittleEndian.Uint32(b[8:])

if flag != 0 {

return nil, fmt.Errorf("prepareInferRequest error flag set")

}

// url

rp := w.stackAlloc()

w.fns["requestresult_url"].CallWithStack(context.Background(), []uint64{uint64(rp), uint64(rptr)})

url := w.retStr(rp)

w.stackFree()

// headers

res, err := w.fns["requestresult_headers"].Call(context.Background(), uint64(rptr))

if err != nil {

return nil, err

}

headers := map[string]string{}

if hm, ok := w.get(uint32(res[0])).(map[string]string); ok {

for k, v := range hm {

headers[k] = v

}

// body

rp = w.stackAlloc()

w.fns["requestresult_body"].CallWithStack(context.Background(), []uint64{uint64(rp), uint64(rptr)})

bb, _ := w.mem.Read(rp, 8)

bodyPtr := binary.LittleEndian.Uint32(bb)

bodyLn := binary.LittleEndian.Uint32(bb[4:])

var body string

if bodyPtr != 0 {

body = w.readStr(bodyPtr, bodyLn)

w.fre.Call(context.Background(), uint64(bodyPtr), uint64(bodyLn), 1)

}

w.stackFree()

return &inferResult{URL: url, Headers: headers, Body: body}, nil

}

qodercli2api/wasm.go at master · Liki4/qodercli2api · GitHub

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