Anti Captcha

# Dockerfile contains instructions how to build a Docker image that
# will contain all the code and configuration needed to run your actor.
# For a full Dockerfile reference,
# see https://docs.docker.com/engine/reference/builder/

# First, specify the base Docker image. Apify provides the following
# base images for your convenience:
#  apify/actor-node-basic (Node.js on Alpine Linux, small and fast)
#  apify/actor-node-chrome (Node.js + Chrome on Debian)
#  apify/actor-node-chrome-xvfb (Node.js + Chrome + Xvfb on Debian)
# For more information, see https://docs.apify.com/actor/build#base-images
# Note that you can use any other image from Docker Hub.
FROM apify/actor-node-basic

# Second, copy just package.json since it should be the only file
# that affects "npm install" in the next step, to speed up the build
COPY package.json ./

# Install NPM packages, skip optional and development dependencies to
# keep the image small. Avoid logging too much and print the dependency
# tree for debugging
RUN npm --quiet set progress=false \
 && npm install --only=prod --no-optional \
 && echo "Installed NPM packages:" \
 && npm list || true \
 && echo "Node.js version:" \
 && node --version \
 && echo "NPM version:" \
 && npm --version

# Next, copy the remaining files and directories with the source code.
# Since we do this after NPM install, quick build will be really fast
# for most source file changes.
COPY . ./

# Optionally, specify how to launch the source code of your actor.
# By default, Apify's base Docker images define the CMD instruction
# that runs the Node.js source code using the command specified
# in the "scripts.start" section of the package.json file.
# In short, the instruction looks something like this:
#
# CMD npm start

1const Apify = require('apify');
2const fetch = require('node-fetch');
3
4const postJson = async (url, body) => {
5    const opt = {
6        method: 'POST',
7        body: JSON.stringify(body),
8        headers: {'Content-Type': 'application/json'}
9    };
10    const response = await fetch(url, opt);
11    return await response.json();
12};
13
14class AntiCaptchaTask {
15    
16    constructor(input){
17        this.input = input;
18        this.taskId = null;
19        this.clientKey = input.clientKey;
20    }
21    
22    async create(){
23        const data = await postJson('http://api.anti-captcha.com/createTask', this.input);
24        if(data.errorId > 0){throw new Error(data.errorDescription);}
25        this.taskId = data.taskId;
26        return data.taskId;
27    }
28    
29    async getResult(){
30        const body = {
31            taskId: this.taskId,
32            clientKey: this.clientKey,
33        };
34        const data = await postJson('http://api.anti-captcha.com/getTaskResult', body);
35        if(data.errorId > 0){throw new Error(data.errorDescription);}
36        return data;
37    }
38
39    async waitForResult(timeout = 600000){
40        return new Promise((resolve, reject) => {
41            const startedAt = new Date();
42            const waitLoop = () => {
43                if((new Date() - startedAt) > timeout){
44                    reject(new Error("Waiting for result timed out."));
45                }
46                this.getResult().then((response) => {
47                    if(response.errorId !== 0){
48                        reject(new Error(response.errorDescription));
49                    } 
50                    else{
51                        console.log(response);
52                        if(response.status === 'ready'){resolve(response);}
53                        else{
54                            console.log('...');
55                            setTimeout(waitLoop, 1000);
56                        }
57                    }
58                }).catch((e) => reject(e));
59            };
60            waitLoop();
61        });
62    }
63    
64}
65
66Apify.main(async () => {
67    
68    const input = await Apify.getValue('INPUT');
69    if(!input.clientKey){
70        throw new Error('ERROR: missing "clientKey" attribute in INPUT');
71    }
72    if(!input.task){
73        throw new Error('ERROR: missing "task" attribute in INPUT');
74    }
75    if(!input.task.type){
76        throw new Error('ERROR: missing "task.type" attribute in INPUT');
77    }
78    
79    console.log('Solving captcha, type: ' + input.task.type);
80
81    const task = new AntiCaptchaTask(input);
82    console.log('Creating AntiCaptcha task...');
83    await task.create();
84    console.log('Waiting for result...');
85    const result = await task.waitForResult();
86    console.log('Captcha solving succesful.');
87    await Apify.setValue('OUTPUT', result.solution);
88    console.log('Solution: ');
89    console.dir(result.solution);
90});

{
    "name": "anti-captcha",
    "version": "0.0.1",
    "dependencies": {
        "apify": "^1.0.0",
        "node-fetch": "^2.6.1"
    },
    "scripts": {
        "start": "node main.js"
    },
    "author": "Petr Cermak"
}