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BlockSense: Blockchain Based Trustworthy Crowd-sensing Platform

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# BlockSense: Blockchain Based Trustworthy Crowd-sensing Platform

### Environment

```
+ nodejs@v8.11.1
+ python@v2.7.15
+ ganache@v1.2.2
```

### Installation

```bash
$ npm install
```

**=> Note that** you need to rebuild modules for electron after pre-step

```bash
# for windows
$ .\node_modules\.bin\electron-rebuild.cmd
# for linux
$ ./node_modules/.bin/electron-rebuild
```

### Run it

```bash
$ npm start
```

### Possible errors

- **Error: A dynamic link library (DLL) initialization routine failed**

两个可能有用的链接：[issues#10193](https://github.com/electron/electron/issues/10193), [using-native-node-modules](https://electronjs.org/docs/tutorial/using-native-node-modules), 注意只有在`dependencies`中的modules才会被rebuild，还是失败的话检查一下package.json文件有没有写对

- **How to use `sloc` and `js-ipfs` modules with Electron**

两个可能有用的链接：[solc#using-with-electron](https://www.npmjs.com/package/solc#using-with-electron), [electronjs.org/docs/faq](https://electronjs.org/docs/faq)

- **npm install build `ERROR MSB4019`**

可以参考这个链接：[npm-install-g-karma-error-msb4019-the-imported-project-c-microsoft-cpp-defau](https://stackoverflow.com/questions/18774929/npm-install-g-karma-error-msb4019-the-imported-project-c-microsoft-cpp-defau)

- **An unhandled error occurred inside electron-rebuild**

两个可能有用的链接：[compiling-native-addon-modules](https://github.com/Microsoft/nodejs-guidelines/blob/master/windows-environment.md#compiling-native-addon-modules),[node-gyp#installation](https://github.com/nodejs/node-gyp#installation), 另外检查路径中不要有中文。

Sometimes electron-rebuild results in an error like `openssl/rsa.h: No such file`. 
For Ubuntu and other Debian based systems run the following command to fix the problem 
`sudo apt-get install libssl-dev`

For Windows systems, first download and install openSSL libraries from [here](https://slproweb.com/products/Win32OpenSSL.html). Then edit the following file `.\node_modules\ursa-optional\binding.gyp`
Change the contents of the file to:

```
{
  "targets": [
    {
      'target_name': 'ursaNative',
      'sources': [ 'src/ursaNative.cc' ],
      'conditions': [
        [ 'OS=="win"', {
          'defines': [
            'uint=unsigned int',
          ],
          'include_dirs': [
            # use node's bundled openssl headers platforms
            'C:\Program Files\OpenSSL-Win64\include',
                        "<!(node -e \"require('nan')\")"
          ],
          'libraries': [
            '-lC:/Program Files/OpenSSL-Win64/lib/capi.lib',
            '-lC:/Program Files/OpenSSL-Win64/lib/dasync.lib',
            '-lC:/Program Files/OpenSSL-Win64/lib/libapps.lib',
            '-lC:/Program Files/OpenSSL-Win64/lib/libcrypto.lib',
            '-lC:/Program Files/OpenSSL-Win64/lib/libssl.lib',
            '-lC:/Program Files/OpenSSL-Win64/lib/libtestutil.lib',
            '-lC:/Program Files/OpenSSL-Win64/lib/openssl.lib',
            '-lC:/Program Files/OpenSSL-Win64/lib/ossltest.lib',
            '-lC:/Program Files/OpenSSL-Win64/lib/padlock.lib',
            '-lC:/Program Files/OpenSSL-Win64/lib/uitest.lib'
          ]
        }, { # OS!="win"
          'include_dirs': [
            # use node's bundled openssl headers on Unix platforms
            '<(node_root_dir)/deps/openssl/openssl/include',
                        "<!(node -e \"require('nan')\")"
          ],
        }],
      ],
    }
  ]
}
```

Please note: The installation directory of OpenSSL should match with the path given in the above file.

- **Sweetalert2 text input not clickable/focus when bootstrap modal is open**

This link is helpful to solve it: [issues#374](https://github.com/sweetalert2/sweetalert2/issues/374)

- **Raise the `exceed gas limit` error**

Just increase the upper bound of gas limit for testrpc or geth client, here I set limit gas to 100000000.

### Cite

```
@article{HuangTMC2022BlockSense,
  author={Huang, Junqin and Kong, Linghe and Cheng, Long and Dai, Hong-Ning and Qiu, Meikang and Chen, Guihai and Liu, Xue and Huang, Gang},
  journal={IEEE Transactions on Mobile Computing}, 
  title={BlockSense: Towards Trustworthy Mobile Crowdsensing via Proof-of-Data Blockchain}, 
  year={2022},
  volume={},
  number={},
  pages={1-17},
  doi={10.1109/TMC.2022.3230758}
}
```

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