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xfgryujk committed Jul 14, 2018
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2 changes: 2 additions & 0 deletions .gitattributes
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# Auto detect text files and perform LF normalization
* text=auto
59 changes: 59 additions & 0 deletions .gitignore
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# Logs
logs
*.log
npm-debug.log*
yarn-debug.log*
yarn-error.log*

# Runtime data
pids
*.pid
*.seed
*.pid.lock

# Directory for instrumented libs generated by jscoverage/JSCover
lib-cov

# Coverage directory used by tools like istanbul
coverage

# nyc test coverage
.nyc_output

# Grunt intermediate storage (http://gruntjs.com/creating-plugins#storing-task-files)
.grunt

# Bower dependency directory (https://bower.io/)
bower_components

# node-waf configuration
.lock-wscript

# Compiled binary addons (http://nodejs.org/api/addons.html)
build/Release

# Dependency directories
node_modules/
jspm_packages/

# Typescript v1 declaration files
typings/

# Optional npm cache directory
.npm

# Optional eslint cache
.eslintcache

# Optional REPL history
.node_repl_history

# Output of 'npm pack'
*.tgz

# Yarn Integrity file
.yarn-integrity

# dotenv environment variables file
.env

21 changes: 21 additions & 0 deletions LICENSE
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MIT License

Copyright (c) 2018 xfgryujk

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
40 changes: 40 additions & 0 deletions weibo-img-crypto.js
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window.isWbImgCryptoLoaded || (function () {
window.isWbImgCryptoLoaded = true

function encrypt (data) {
const KEY = 0xAA
for (let i = 0; i < data.length; i += 4) {
data[i] ^= KEY
data[i + 1] ^= KEY
data[i + 2] ^= KEY
}
}

// Hook FileReader.readAsDataURL
let originalReadAsDataURL = window.FileReader.prototype.readAsDataURL
window.FileReader.prototype.readAsDataURL = function (file) {
if (file.type.startsWith('image/') && file.type !== 'image/gif') { // GIF is not supported at present
// Hook onloadend
let originalOnloadend = this.onloadend
this.onloadend = () => {
let img = new window.Image()
img.onload = () => {
let canvas = document.createElement('canvas');
[canvas.width, canvas.height] = [img.width, img.height]
let ctx = canvas.getContext('2d')
ctx.drawImage(img, 0, 0)

// 加密
let imgData = ctx.getImageData(0, 0, img.width, img.height)
encrypt(imgData.data)
ctx.putImageData(imgData, 0, 0)

// 替换上传的图片
originalOnloadend({target: {result: canvas.toDataURL()}})
}
img.src = this.result
}
}
originalReadAsDataURL.call(this, file)
}
})()

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