Fetch challenges from CTF API (CTFd ONLY)

[fslaktern]

Automatically add challenge posts with title, description and link to attachment (to prevent downloading large files) when given the URL to a CTFd CTF.

CTFs will most likely require an account to see the challenges, so another feature should be implemented to automatically create a shared account and add credentials to #information (#20 )

Example: https://play.glacierctf.com/api/v1/challenges

We want the following fields:

• success
• challenge.id
• challenge.name
• challenge.value
• challenge.solves
• challenge.solved_by_me
• challenge.category
• challenge.tags

{
  "success": true,
  "data": [
    {
      "id": 2,
      "type": "dynamic",
      "name": "Skilift",
      "value": 50,
      "solves": 333,
      "solved_by_me": true,
      "category": "intro",
      "tags": [
        {
          "value": "rev"
        }
      ],
      "template": "/plugins/dynamic_challenges/assets/view.html",
      "script": "/plugins/dynamic_challenges/assets/view.js"
    },
    {
      "id": 4,
      "type": "dynamic",
      "name": "ARISAI",
      "value": 50,
      "solves": 191,
      "solved_by_me": false,
      "category": "intro",
      "tags": [
        {
          "value": "crypto"
        }
      ],
      "template": "/plugins/dynamic_challenges/assets/view.html",
      "script": "/plugins/dynamic_challenges/assets/view.js"
    }
  ]
}

To get more information about a specific challenge:

curl 'https://play.glacierctf.com/api/v1/challenges/10' -H 'content-type: application/json'  -H 'cookie: session=...'

We want the following fields:

• success
• challenge.description
• challenge.connection_info
• challenge.state
• challenge.attempts
• challenge.files
• challenge.hints

{
  "success": true,
  "data": {
    "id": 10,
    "name": "Password recovery",
    "value": 50,
    "initial": 500,
    "decay": 50,
    "minimum": 50,
    "description": "Our infra admin \"LosCapitan\" stores all of his passwords in a self-hosted password manager.\r\nShortly before the CTF, he forgot his password and now he can't access his passwords anymore.\r\nThe keys to the underlying server are stored in the password manager as well.\r\nLuckily, he never changed his password and we still have the old password checker for one of our servers.\r\nCan you help us recover his password for the \"LosCapitan\" user?\r\nWrap the correct password in gctf{}. Flag format is gctf{.*}.\r\n\r\nauthor: Xer0\r\n",
    "connection_info": null,
    "category": "rev",
    "state": "visible",
    "max_attempts": 0,
    "type": "dynamic",
    "type_data": {
      "id": "dynamic",
      "name": "dynamic",
      "templates": {
        "create": "/plugins/dynamic_challenges/assets/create.html",
        "update": "/plugins/dynamic_challenges/assets/update.html",
        "view": "/plugins/dynamic_challenges/assets/view.html"
      },
      "scripts": {
        "create": "/plugins/dynamic_challenges/assets/create.js",
        "update": "/plugins/dynamic_challenges/assets/update.js",
        "view": "/plugins/dynamic_challenges/assets/view.js"
      }
    },
    "solves": 246,
    "solved_by_me": false,
    "attempts": 0,
    "files": [
      "/files/18eb99d0b5e2bdfa6fc252cdc70d5412/app?token=..."
    ],
    "tags": [
      "rev"
    ],
    "hints": [],
    "view": "..."
  }
}

[fslaktern]

solved_by_me means solved by team, not necessarily by the currently logged in user.

[fslaktern]

curl -H "ContentType: application/json" --cookie "session=..." https://play.glacierctf.com/api/v1/challenges

[fslaktern]

Should run automatically if a shared user was created successfully.