From 8ab5f8507bfe988972e409f9507085baaed08415 Mon Sep 17 00:00:00 2001 From: Daniele Belardi Date: Sun, 7 Mar 2021 17:02:38 +0100 Subject: [PATCH] feat: add wasm build Add wasm build using a docker container. Expose some api needed only in wasm. --- .dockerignore | 6 + Dockerfile | 22 + README.md | 4 + build_wasm.js | 73 ++ build_wasm.sh | 24 - examples/wasm.js | 222 ++++++ package-lock.json | 1915 +-------------------------------------------- package.json | 3 + src/native/api.c | 39 +- src/native/api.h | 18 + wasm.js | 112 --- 11 files changed, 390 insertions(+), 2048 deletions(-) create mode 100644 .dockerignore create mode 100644 Dockerfile create mode 100644 build_wasm.js delete mode 100755 build_wasm.sh create mode 100644 examples/wasm.js delete mode 100644 wasm.js diff --git a/.dockerignore b/.dockerignore new file mode 100644 index 00000000..67ae8f83 --- /dev/null +++ b/.dockerignore @@ -0,0 +1,6 @@ +node_modules +.github +bench +test +images +lib diff --git a/Dockerfile b/Dockerfile new file mode 100644 index 00000000..62ff3372 --- /dev/null +++ b/Dockerfile @@ -0,0 +1,22 @@ +FROM node:14.16.0-buster + +ARG UID=1000 +ARG GID=1000 +ARG WASI_SDK_VERSION_MAJOR=12 +ARG WASI_SDK_VERSION_MINOR=0 + +ENV WASI_ROOT=/home/node/wasi-sdk-12.0 + +RUN wget https://github.com/WebAssembly/wasi-sdk/releases/download/wasi-sdk-${WASI_SDK_VERSION_MAJOR}/wasi-sdk-${WASI_SDK_VERSION_MAJOR}.${WASI_SDK_VERSION_MINOR}-linux.tar.gz -P /tmp + +RUN tar xvf /tmp/wasi-sdk-${WASI_SDK_VERSION_MAJOR}.${WASI_SDK_VERSION_MINOR}-linux.tar.gz --directory /home/node + +RUN mkdir /home/node/llhttp + +WORKDIR /home/node/llhttp + +COPY . . + +RUN npm ci + +USER node diff --git a/README.md b/README.md index ff72e07f..3c2e53cf 100644 --- a/README.md +++ b/README.md @@ -98,6 +98,10 @@ if (err == HPE_OK) { * Python: [pallas/pyllhttp][8] * Ruby: [metabahn/llhttp][9] +### Note + +The work on the wasm build present here has been modified from what [devsnek](https://github.com/devsnek) started in https://github.com/devsnek/llhttp/tree/wasm. + #### LICENSE This software is licensed under the MIT License. diff --git a/build_wasm.js b/build_wasm.js new file mode 100644 index 00000000..e4794b1f --- /dev/null +++ b/build_wasm.js @@ -0,0 +1,73 @@ +'use strict' + +const { mkdirSync, writeFileSync } = require('fs') +const { execSync } = require('child_process') +const { join } = require('path') +const js = require('javascript-stringify') +const { WASI_ROOT } = process.env + +if (process.argv[2] === '--setup') { + try { + mkdirSync(join(__dirname, 'build')) + process.exit(0); + } catch (error) { + if (error.code !== 'EEXIST') { + throw error + } + process.exit(0); + } +} + +if (process.argv[2] === '--docker') { + let cmd = 'docker run --rm -it'; + if (process.platform === 'linux') { + cmd += ` --user ${process.getuid()}:${process.getegid()}`; + } + cmd += ` --mount type=bind,source=${__dirname}/build,target=/home/node/llhttp/build llhttp_wasm_builder node build_wasm.js`; + execSync(cmd, { stdio: 'inherit' }); + process.exit(0); +} + +if (!WASI_ROOT) { + throw new Error('Please setup the WASI_ROOT env variable.') +} + +const WASM_OUT = join(__dirname, 'build', 'wasm') + +try { + mkdirSync(WASM_OUT) +} catch (error) { + if (error.code !== 'EEXIST') { + throw error + } +} + +// Build ts +execSync('npm run build', { stdio: 'inherit' }) + +// Build wasm binary +execSync(`${WASI_ROOT}/bin/clang \ + --sysroot=${WASI_ROOT}/share/wasi-sysroot \ + -target wasm32-unknown-wasi \ + -Ofast \ + -fno-exceptions \ + -fvisibility=hidden \ + -mexec-model=reactor \ + -Wl,-error-limit=0 \ + -Wl,-O3 \ + -Wl,--lto-O3 \ + -Wl,--strip-all \ + -Wl,--allow-undefined \ + -Wl,--export-dynamic \ + -Wl,--export-table \ + -Wl,--export=malloc \ + -Wl,--export=free \ + ${join(__dirname, 'build', 'c')}/*.c \ + ${join(__dirname, 'src', 'native')}/*.c \ + -I${join(__dirname, 'build')} \ + -o ${join(WASM_OUT, 'llhttp.wasm')}`, { stdio: 'inherit' }) + +// Build `constants.js` file +const { constants } = require('.') +const data = `module.exports = ${js.stringify(constants)}` +writeFileSync(join(WASM_OUT, 'constants.js'), data, 'utf8') diff --git a/build_wasm.sh b/build_wasm.sh deleted file mode 100755 index 9a8ec830..00000000 --- a/build_wasm.sh +++ /dev/null @@ -1,24 +0,0 @@ -#!/bin/bash - -set -ex - -$WASI_ROOT/bin/clang \ - --sysroot=$WASI_ROOT/share/wasi-sysroot \ - -target wasm32-unknown-wasi \ - -Ofast \ - -fno-exceptions \ - -fvisibility=hidden \ - -mexec-model=reactor \ - -Wl,-error-limit=0 \ - -Wl,-O3 \ - -Wl,--lto-O3 \ - -Wl,--strip-all \ - -Wl,--allow-undefined \ - -Wl,--export-dynamic \ - -Wl,--export-table \ - -Wl,--export=malloc \ - -Wl,--export=free \ - ./build/c/*.c \ - ./src/native/*.c \ - -I./build \ - -o ./build/llhttp.wasm diff --git a/examples/wasm.js b/examples/wasm.js new file mode 100644 index 00000000..02b8ef4e --- /dev/null +++ b/examples/wasm.js @@ -0,0 +1,222 @@ +'use strict'; + +/* global WebAssembly */ + +const { readFileSync } = require('fs'); +const { resolve } = require('path'); +const constants = require('../build/wasm/constants.js'); +const bin = readFileSync(resolve(__dirname, '../build/wasm/llhttp.wasm')); +const mod = new WebAssembly.Module(bin); + +const REQUEST = constants.TYPE.REQUEST; +const RESPONSE = constants.TYPE.RESPONSE; +const kOnMessageBegin = 0; +const kOnHeaders = 1; +const kOnHeadersComplete = 2; +const kOnBody = 3; +const kOnMessageComplete = 4; +const kOnExecute = 5; + +const kPtr = Symbol('kPrt'); +const kUrl = Symbol('kUrl'); +const kStatusMessage = Symbol('kStatusMessage'); +const kHeadersFields = Symbol('kHeadersFields'); +const kHeadersValues = Symbol('kHeadersValues'); +const kBody = Symbol('kBody'); +const kReset = Symbol('kReset'); +const kCheckErr = Symbol('kCheckErr'); + +const cstr = (ptr, len) => + Buffer.from(inst.exports.memory.buffer, ptr, len).toString(); + +const wasm_on_message_begin = p => { + const i = instMap.get(p); + i[kReset](); + return i[kOnMessageBegin](); +}; + +const wasm_on_url = (p, at, length) => { + instMap.get(p)[kUrl] = cstr(at, length); + return 0; +}; + +const wasm_on_status = (p, at, length) => { + instMap.get(p)[kStatusMessage] = cstr(at, length); + return 0; +}; + +const wasm_on_header_field = (p, at, length) => { + const i= instMap.get(p) + i[kHeadersFields].push(cstr(at, length)); + return 0; +}; + +const wasm_on_header_value = (p, at, length) => { + const i = instMap.get(p); + i[kHeadersValues].push(cstr(at, length)); + return 0; +}; + +const wasm_on_headers_complete = p => { + const i = instMap.get(p); + const type = inst.exports.llhttp_get_type(p); + const versionMajor = inst.exports.llhttp_get_http_major(p); + const versionMinor = inst.exports.llhttp_get_http_minor(p); + const rawHeaders = []; + let method; + let url; + let statusCode; + let statusMessage; + const upgrade = inst.exports.llhttp_get_upgrade(p); + const shouldKeepAlive = inst.exports.llhttp_should_keep_alive(p); + + for (let c = 0; c < i[kHeadersFields].length; c++) { + rawHeaders.push(i[kHeadersFields][c], i[kHeadersValues][c]) + } + i[kOnHeaders](rawHeaders); + + if (type === HTTPParser.REQUEST) { + method = constants.METHODS[inst.exports.llhttp_get_method(p)]; + url = i[kUrl]; + } else if (type === HTTPParser.RESPONSE) { + statusCode = inst.exports.llhttp_get_status_code(p); + statusMessage = i[kStatusMessage]; + } + return i[kOnHeadersComplete](versionMajor, versionMinor, rawHeaders, method, +url, statusCode, statusMessage, upgrade, shouldKeepAlive); +}; + +const wasm_on_body = (p, at, length) => { + const i = instMap.get(p); + const body = Buffer.from(inst.exports.memory.buffer, at, length); + return i[kOnBody](body); +}; + +const wasm_on_message_complete = (p) => { + return instMap.get(p)[kOnMessageComplete](); +}; + +const instMap = new Map(); + +const inst = new WebAssembly.Instance(mod, { + env: { + wasm_on_message_begin, + wasm_on_url, + wasm_on_status, + wasm_on_header_field, + wasm_on_header_value, + wasm_on_headers_complete, + wasm_on_body, + wasm_on_message_complete, + }, +}); + +inst.exports._initialize(); // wasi reactor + +class HTTPParser { + constructor(type) { + this[kPtr] = inst.exports.llhttp_alloc(constants.TYPE[type]); + instMap.set(this[kPtr], this); + + this[kUrl] = ''; + this[kStatusMessage] = null; + this[kHeadersFields] = []; + this[kHeadersValues] = []; + this[kBody] = null; + } + + [kReset]() { + this[kUrl] = ''; + this[kStatusMessage] = null; + this[kHeadersFields] = []; + this[kHeadersValues] = []; + this[kBody] = null; + } + + [kOnMessageBegin]() { + return 0; + } + + [kOnHeaders](rawHeaders) {} + + [kOnHeadersComplete](versionMajor, versionMinor, rawHeaders, method, + url, statusCode, statusMessage, upgrade, shouldKeepAlive) { + return 0; + } + + [kOnBody](body) { + this[kBody] = body; + return 0; + } + + [kOnMessageComplete]() { + return 0; + } + + destroy() { + instMap.delete(this[kPtr]); + inst.exports.llhttp_free(this[kPtr]); + } + + execute(data) { + // TODO(devsnek): could probably use static alloc and chunk but i'm lazy + const ptr = inst.exports.malloc(data.byteLength); + const u8 = new Uint8Array(inst.exports.memory.buffer); + u8.set(data, ptr); + const ret = inst.exports.llhttp_execute(this[kPtr], ptr, data.length); + inst.exports.free(ptr); + this[kCheckErr](ret); + return ret; + } + + [kCheckErr](n) { + if (n === constants.ERROR.OK) { + return; + } + const ptr = inst.exports.llhttp_get_error_reason(this[kPtr]); + const u8 = new Uint8Array(inst.exports.memory.buffer); + const len = u8.indexOf(0, ptr) - ptr; + throw new Error(cstr(ptr, len)); + } +} + +HTTPParser.REQUEST = REQUEST; +HTTPParser.RESPONSE = RESPONSE; +HTTPParser.kOnMessageBegin = kOnMessageBegin; +HTTPParser.kOnHeaders = kOnHeaders; +HTTPParser.kOnHeadersComplete = kOnHeadersComplete; +HTTPParser.kOnBody = kOnBody; +HTTPParser.kOnMessageComplete = kOnMessageComplete; +HTTPParser.kOnExecute = kOnExecute; + +{ + const p = new HTTPParser(HTTPParser.REQUEST); + + p.execute(Buffer.from(`\ +POST /owo HTTP/1.1\r +X: Y\r +Content-Length: 9\r +\r +uh, meow?\r +`)); + + console.log(p); + + p.destroy(); +} + +{ + const p = new HTTPParser(HTTPParser.RESPONSE); + + p.execute(Buffer.from(`\ +HTTP/1.1 200 OK\r +X: Y\r +Content-Length: 9\r +\r +uh, meow?\r +`)); + + console.log(p); + + p.destroy(); +} diff --git a/package-lock.json b/package-lock.json index 84ac94b4..6a48a868 100644 --- a/package-lock.json +++ b/package-lock.json @@ -1,1915 +1,8 @@ { "name": "llhttp", "version": "4.0.0", - "lockfileVersion": 2, + "lockfileVersion": 1, "requires": true, - "packages": { - "": { - "version": "4.0.0", - "license": "MIT", - "dependencies": { - "@types/semver": "^5.5.0", - "llparse": "^7.1.0", - "semver": "^5.7.1" - }, - "devDependencies": { - "@types/mocha": "^5.2.7", - "@types/node": "^10.17.52", - "llparse-dot": "^1.0.1", - "llparse-test-fixture": "^5.0.1", - "mdgator": "^1.1.2", - "mocha": "^7.2.0", - "ts-node": "^7.0.1", - "tslint": "^5.20.1", - "typescript": "^3.9.9" - } - }, - "node_modules/@babel/code-frame": { - "version": "7.12.13", - "resolved": 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"https://registry.npmjs.org/javascript-stringify/-/javascript-stringify-2.0.1.tgz", + "integrity": "sha512-yV+gqbd5vaOYjqlbk16EG89xB5udgjqQF3C5FAORDg4f/IS1Yc5ERCv5e/57yBcfJYw05V5JyIXabhwb75Xxow==", + "dev": true + }, "js-tokens": { "version": "4.0.0", "resolved": "https://registry.npmjs.org/js-tokens/-/js-tokens-4.0.0.tgz", diff --git a/package.json b/package.json index bde42077..897cd590 100644 --- a/package.json +++ b/package.json @@ -12,6 +12,8 @@ "bench": "ts-node bench/", "build": "ts-node bin/generate.ts", "build-ts": "tsc", + "prebuild-wasm": "docker build -t llhttp_wasm_builder . && node build_wasm.js --setup", + "build-wasm": "node build_wasm.js --docker", "clean": "rm -rf lib && rm -rf test/tmp", "prepare": "npm run clean && npm run build-ts", "lint": "tslint -c tslint.json bin/*.ts src/*.ts src/**/*.ts test/*.ts test/**/*.ts", @@ -38,6 +40,7 @@ "devDependencies": { "@types/mocha": "^5.2.7", "@types/node": "^10.17.52", + "javascript-stringify": "^2.0.1", "llparse-dot": "^1.0.1", "llparse-test-fixture": "^5.0.1", "mdgator": "^1.1.2", diff --git a/src/native/api.c b/src/native/api.c index cc1ed045..8e81586e 100644 --- a/src/native/api.c +++ b/src/native/api.c @@ -26,24 +26,29 @@ void llhttp_init(llhttp_t* parser, llhttp_type_t type, #if defined(__wasm__) +extern int wasm_on_message_begin(llhttp_t * p); extern int wasm_on_url(llhttp_t* p, const char* at, size_t length); extern int wasm_on_status(llhttp_t* p, const char* at, size_t length); extern int wasm_on_header_field(llhttp_t* p, const char* at, size_t length); extern int wasm_on_header_value(llhttp_t* p, const char* at, size_t length); +extern int wasm_on_headers_complete(llhttp_t * p); extern int wasm_on_body(llhttp_t* p, const char* at, size_t length); +extern int wasm_on_message_complete(llhttp_t * p); + const llhttp_settings_t wasm_settings = { - NULL, + wasm_on_message_begin, wasm_on_url, wasm_on_status, wasm_on_header_field, wasm_on_header_value, - NULL, + wasm_on_headers_complete, wasm_on_body, - NULL, + wasm_on_message_complete, NULL, NULL, }; + llhttp_t* llhttp_alloc(llhttp_type_t type) { llhttp_t* parser = malloc(sizeof(llhttp_t)); llhttp_init(parser, type, &wasm_settings); @@ -54,6 +59,32 @@ void llhttp_free(llhttp_t* parser) { free(parser); } +/* Some getters required to get stuff from the parser */ + +uint8_t llhttp_get_type(llhttp_t* parser) { + return parser->type; +} + +uint8_t llhttp_get_http_major(llhttp_t* parser) { + return parser->http_major; +} + +uint8_t llhttp_get_http_minor(llhttp_t* parser) { + return parser->http_minor; +} + +uint8_t llhttp_get_method(llhttp_t* parser) { + return parser->method; +} + +int llhttp_get_status_code(llhttp_t* parser) { + return parser->status_code; +} + +uint8_t llhttp_get_upgrade(llhttp_t* parser) { + return parser->upgrade; +} + #endif // defined(__wasm__) @@ -293,7 +324,7 @@ int llhttp__on_chunk_complete(llhttp_t* s, const char* p, const char* endp) { } -/* Private */ +/* Private https://github.com/dnlup/llhttp/blob/undici_wasm/wasm.js*/ void llhttp__debug(llhttp_t* s, const char* p, const char* endp, diff --git a/src/native/api.h b/src/native/api.h index 0868d254..e32a86b9 100644 --- a/src/native/api.h +++ b/src/native/api.h @@ -73,6 +73,24 @@ llhttp_t* llhttp_alloc(llhttp_type_t type); LLHTTP_EXPORT void llhttp_free(llhttp_t* parser); +LLHTTP_EXPORT +uint8_t llhttp_get_type(llhttp_t* parser); + +LLHTTP_EXPORT +uint8_t llhttp_get_http_major(llhttp_t* parser); + +LLHTTP_EXPORT +uint8_t llhttp_get_http_minor(llhttp_t* parser); + +LLHTTP_EXPORT +uint8_t llhttp_get_method(llhttp_t* parser); + +LLHTTP_EXPORT +int llhttp_get_status_code(llhttp_t* parser); + +LLHTTP_EXPORT +uint8_t llhttp_get_upgrade(llhttp_t* parser); + #endif // defined(__wasm__) /* Reset an already initialized parser back to the start state, preserving the diff --git a/wasm.js b/wasm.js deleted file mode 100644 index bf158267..00000000 --- a/wasm.js +++ /dev/null @@ -1,112 +0,0 @@ -'use strict'; - -/* global WebAssembly */ - -const fs = require('fs'); -const { constants } = require('.'); - -const bin = fs.readFileSync('./build/llhttp.wasm'); -const mod = new WebAssembly.Module(bin); - -const cstr = (ptr, len) => - Buffer.from(inst.exports.memory.buffer, ptr, len).toString(); - -const instMap = new Map(); - -const inst = new WebAssembly.Instance(mod, { - env: { - wasm_on_url(p, at, length) { - instMap.get(p).url = cstr(at, length); - return 0; - }, - wasm_on_status(p, at, length) { - instMap.get(p).status = cstr(at, length); - return 0; - }, - wasm_on_header_field(p, at, length) { - instMap.get(p).headerName = cstr(at, length); - return 0; - }, - wasm_on_header_value(p, at, length) { - const i = instMap.get(p); - i.headers[i.headerName] = cstr(at, length); - i.headerName = ''; - return 0; - }, - wasm_on_body(p, at, length) { - instMap.get(p).body = Buffer.from(inst.exports.memory.buffer, at, length); - return 0; - }, - }, -}); - -inst.exports._initialize(); // wasi reactor - -class Parser { - constructor(type) { - this.ptr = inst.exports.llhttp_alloc(constants.TYPE[type]); - instMap.set(this.ptr, this); - - this.url = ''; - this.status = null; - this.headerName = ''; - this.headers = {}; - this.body = null; - } - - destroy() { - instMap.delete(this.ptr); - inst.exports.llhttp_free(this.ptr); - } - - execute(data) { - // could probably use static alloc and chunk but i'm lazy - const ptr = inst.exports.malloc(data.byteLength); - const u8 = new Uint8Array(inst.exports.memory.buffer); - u8.set(data, ptr); - this.checkErr(inst.exports.llhttp_execute(this.ptr, ptr, data.length)); - inst.exports.free(ptr); - } - - checkErr(n) { - if (n === constants.ERROR.OK) { - return; - } - const ptr = inst.exports.llhttp_get_error_reason(this.ptr); - const u8 = new Uint8Array(inst.exports.memory.buffer); - const len = u8.indexOf(0, ptr) - ptr; - throw new Error(cstr(ptr, len)); - } -} - -{ - const p = new Parser('REQUEST'); - - p.execute(Buffer.from(`\ -POST /owo HTTP/1.1\r -X: Y\r -Content-Length: 9\r -\r -uh, meow?\r -`)); - - console.log(p); - - p.destroy(); -} - -{ - const p = new Parser('RESPONSE'); - - p.execute(Buffer.from(`\ -HTTP/1.1 200 OK\r -X: Y\r -Content-Length: 9\r -\r -uh, meow?\r -`)); - - console.log(p); - - p.destroy(); -}