From ea0a4b1e6e21c25c2ddf22261ca217435aa2a8f8 Mon Sep 17 00:00:00 2001
From: fxy060608 <fxy060608@gmail.com>
Date: Tue, 5 Nov 2019 17:01:51 +0800
Subject: [PATCH] feat(app-plus): add crypto

---
 .../build/webpack.nvue.conf.js                | 20 ++++--
 packages/vue-cli-plugin-uni/lib/crypto.js     | 65 +++++++++++++++++++
 packages/vue-cli-plugin-uni/lib/mp.js         |  3 +-
 3 files changed, 83 insertions(+), 5 deletions(-)
 create mode 100644 packages/vue-cli-plugin-uni/lib/crypto.js

diff --git a/packages/vue-cli-plugin-hbuilderx/build/webpack.nvue.conf.js b/packages/vue-cli-plugin-hbuilderx/build/webpack.nvue.conf.js
index 679166918..1d0d04392 100644
--- a/packages/vue-cli-plugin-hbuilderx/build/webpack.nvue.conf.js
+++ b/packages/vue-cli-plugin-hbuilderx/build/webpack.nvue.conf.js
@@ -1,3 +1,4 @@
+const fs = require('fs')
 const path = require('path')
 const webpack = require('webpack')
 const VueLoaderPlugin = require('vue-loader/lib/plugin')
@@ -49,6 +50,7 @@ if (
   process.env.UNI_USING_V8
 ) {
   provide['__f__'] = [require.resolve('@dcloudio/vue-cli-plugin-uni/lib/format-log.js'), 'default']
+  provide['crypto'] = [require.resolve('@dcloudio/vue-cli-plugin-uni/lib/crypto.js'), 'default']
 }
 
 const plugins = [
@@ -159,14 +161,24 @@ rules.unshift({
 
 if (process.env.UNI_USING_NATIVE) {
   plugins.push(new WebpackUniMPPlugin())
+
+  let nativeTemplatePath = path.resolve(
+    process.env.UNI_HBUILDERX_PLUGINS,
+    'weapp-tools/template/v8-native'
+  )
+
+  if (!fs.existsSync(nativeTemplatePath)) { // 兼容旧版本
+    nativeTemplatePath = path.resolve(
+      process.env.UNI_HBUILDERX_PLUGINS,
+      'weapp-tools/template/v8'
+    )
+  }
+
   plugins.push(new CopyWebpackPlugin([{
     from: path.resolve(process.env.UNI_INPUT_DIR, 'static'),
     to: 'static'
   }, {
-    from: path.resolve(
-      process.env.UNI_HBUILDERX_PLUGINS,
-      'weapp-tools/template/v8-native'
-    ),
+    from: nativeTemplatePath,
     to: process.env.UNI_OUTPUT_DIR
   }, {
     from: path.resolve(
diff --git a/packages/vue-cli-plugin-uni/lib/crypto.js b/packages/vue-cli-plugin-uni/lib/crypto.js
new file mode 100644
index 000000000..d5061c861
--- /dev/null
+++ b/packages/vue-cli-plugin-uni/lib/crypto.js
@@ -0,0 +1,65 @@
+var lookup = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 62, 0, 62, 0, 63, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61,
+  0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20,
+  21, 22, 23, 24, 25, 0, 0, 0, 0, 63, 0, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39,
+  40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51
+]
+
+function base64Decode (source, target) {
+  var sourceLength = source.length
+  var paddingLength = (source[sourceLength - 2] === '=' ? 2 : (source[sourceLength - 1] === '=' ? 1
+    : 0))
+
+  var tmp
+  var byteIndex = 0
+  var baseLength = (sourceLength - paddingLength) & 0xfffffffc
+
+  for (var i = 0; i < baseLength; i += 4) {
+    tmp = (lookup[source.charCodeAt(i)] << 18) |
+      (lookup[source.charCodeAt(i + 1)] << 12) |
+      (lookup[source.charCodeAt(i + 2)] << 6) |
+      (lookup[source.charCodeAt(i + 3)])
+
+    target[byteIndex++] = (tmp >> 16) & 0xFF
+    target[byteIndex++] = (tmp >> 8) & 0xFF
+    target[byteIndex++] = (tmp) & 0xFF
+  }
+
+  if (paddingLength === 1) {
+    tmp = (lookup[source.charCodeAt(i)] << 10) |
+      (lookup[source.charCodeAt(i + 1)] << 4) |
+      (lookup[source.charCodeAt(i + 2)] >> 2)
+
+    target[byteIndex++] = (tmp >> 8) & 0xFF
+    target[byteIndex++] = tmp & 0xFF
+  }
+
+  if (paddingLength === 2) {
+    tmp = (lookup[source.charCodeAt(i)] << 2) | (lookup[source.charCodeAt(i + 1)] >> 4)
+
+    target[byteIndex++] = tmp & 0xFF
+  }
+}
+
+export default {
+  getRandomValues (arr) {
+    if (!(
+      arr instanceof Int8Array ||
+        arr instanceof Uint8Array ||
+        arr instanceof Int16Array ||
+        arr instanceof Uint16Array ||
+        arr instanceof Int32Array ||
+        arr instanceof Uint32Array ||
+        arr instanceof Uint8ClampedArray
+    )) {
+      throw new Error('Expected an integer array')
+    }
+    if (arr.byteLength > 65536) {
+      throw new Error('Can only request a maximum of 65536 bytes')
+    }
+    var crypto = uni.requireNativePlugin('DCloud-Crypto')
+    base64Decode(crypto.getRandomValues(arr.byteLength), new Uint8Array(arr.buffer, arr.byteOffset,
+      arr.byteLength))
+    return arr
+  }
+}
diff --git a/packages/vue-cli-plugin-uni/lib/mp.js b/packages/vue-cli-plugin-uni/lib/mp.js
index 947ce123a..ad8f49d9c 100644
--- a/packages/vue-cli-plugin-uni/lib/mp.js
+++ b/packages/vue-cli-plugin-uni/lib/mp.js
@@ -42,7 +42,8 @@ function getProvides () {
     process.env.UNI_PLATFORM === 'app-plus' &&
     process.env.UNI_USING_V8
   ) {
-    provides['__f__'] = [path.resolve(__dirname, 'format-log.js'), 'default']
+    provides['__f__'] = [path.resolve(__dirname, 'format-log.js'), 'default']
+    provides['crypto'] = [path.resolve(__dirname, 'crypto.js'), 'default']
   }
 
   // TODO 目前依赖库 megalo 通过判断 wx 对象是否存在来识别平台做不同处理
-- 
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