Urutan Gambar BLS CAPTCHA dan Penanganan Respons Grid

BLS CAPTCHA menampilkan kisi gambar di mana pengguna harus memilih atau menyusun ulang gambar. Panduan ini mencakup tata letak kisi, format respons, dan cara mengirimkan solusi dengan benar.

Jenis Tantangan Jaringan BLS

Pemesanan Gambar

Pengguna harus menyusun gambar dalam urutan tertentu (misalnya, angka menaik, urutan abjad).

Pemilihan Gambar

Pengguna harus mengklik gambar tertentu yang cocok dengan deskripsi (misalnya, "pilih semua gambar dengan teks").

Pencocokan Pola

Pengguna harus mengidentifikasi gambar mana yang cocok dengan pola atau sampel yang disajikan.

Pemetaan Tata Letak Grid

# grid_mapping.py

# BLS grids typically use 3x3 or 4x4 layouts
# Each cell maps to an index:

# 3x3 grid:
# [0] [1] [2]
# [3] [4] [5]
# [6] [7] [8]

# 4x4 grid:
#  [0]  [1]  [2]  [3]
#  [4]  [5]  [6]  [7]
#  [8]  [9] [10] [11]
# [12] [13] [14] [15]

def grid_position(index, cols=3):
    """Convert flat index to row, column."""
    return index // cols, index % cols


def index_from_position(row, col, cols=3):
    """Convert row, column to flat index."""
    return row * cols + col


# Example: For a 3x3 grid, position (1, 2) = index 5
print(grid_position(5, cols=3))   # (1, 2)
print(index_from_position(1, 2))  # 5

Memecahkan CAPTCHA Grid BLS

# solve_bls_grid.py
import requests
import time
import os
import json


def solve_bls_grid(sitekey, pageurl, instructions=None):
    """Solve a BLS grid CAPTCHA and get response indices."""
    api_key = os.environ["CAPTCHAAI_API_KEY"]

    payload = {
        "key": api_key,
        "method": "bls",
        "sitekey": sitekey,
        "pageurl": pageurl,
        "json": 1,
    }
    if instructions:
        payload["instructions"] = instructions

    resp = requests.post(
        "https://ocr.captchaai.com/in.php",
        data=payload,
        timeout=30,
    )
    result = resp.json()
    if result.get("status") != 1:
        raise RuntimeError(f"Submit failed: {result.get('request')}")

    task_id = result["request"]

    time.sleep(10)
    for _ in range(30):
        resp = requests.get("https://ocr.captchaai.com/res.php", params={
            "key": api_key,
            "action": "get",
            "id": task_id,
            "json": 1,
        }, timeout=15)
        data = resp.json()
        if data.get("status") == 1:
            return data["request"]
        if data["request"] != "CAPCHA_NOT_READY":
            raise RuntimeError(data["request"])
        time.sleep(5)

    raise TimeoutError("BLS grid solve timeout")

Mengurai Respons Grid

# parse_response.py
import json


def parse_grid_response(solution):
    """Parse CaptchaAI BLS response into actionable grid data."""
    # Solution may be JSON or comma-separated indices
    if isinstance(solution, str):
        try:
            parsed = json.loads(solution)
            return parsed
        except json.JSONDecodeError:
            pass

        # Try comma-separated indices
        if "," in solution:
            return [int(x.strip()) for x in solution.split(",")]

        # Single value
        return [solution]

    return solution


def format_for_submission(indices, grid_size=9):
    """Format indices for form submission."""
    # Some sites expect a bitmask
    bitmask = ["0"] * grid_size
    for idx in indices:
        if isinstance(idx, int) and 0 <= idx < grid_size:
            bitmask[idx] = "1"

    return {
        "indices": indices,
        "bitmask": "".join(bitmask),
        "count": len(indices),
    }

Menyuntikkan Solusi Grid dengan Selenium

# inject_grid.py
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC
import time


def click_grid_cells(driver, indices):
    """Click specific grid cells based on solution indices."""
    wait = WebDriverWait(driver, 10)

    # Find all grid cells
    cells = wait.until(
        EC.presence_of_all_elements_located(
            (By.CSS_SELECTOR, ".captcha-grid .cell, .bls-grid img, .grid-item")
        )
    )

    for idx in indices:
        if isinstance(idx, int) and idx < len(cells):
            cells[idx].click()
            time.sleep(0.3)  # Brief delay between clicks


def set_order_sequence(driver, ordered_indices):
    """Click grid cells in the correct order for ordering challenges."""
    wait = WebDriverWait(driver, 10)

    cells = wait.until(
        EC.presence_of_all_elements_located(
            (By.CSS_SELECTOR, ".captcha-grid .cell, .bls-grid img")
        )
    )

    for idx in ordered_indices:
        if isinstance(idx, int) and idx < len(cells):
            cells[idx].click()
            time.sleep(0.5)  # Ordering needs pauses between clicks


def inject_hidden_response(driver, solution_value):
    """Set the solution in a hidden input field."""
    driver.execute_script("""
        var inputs = document.querySelectorAll(
            'input[name*="captcha"], input[name*="response"], #captcha-answer'
        );
        for (var i = 0; i < inputs.length; i++) {
            inputs[i].value = arguments[0];
        }
    """, str(solution_value))

Alur Grid BLS Lengkap

# full_flow.py
from selenium import webdriver
from selenium.webdriver.common.by import By
from selenium.webdriver.support.ui import WebDriverWait
from selenium.webdriver.support import expected_conditions as EC


def handle_bls_grid(driver, pageurl):
    """Complete BLS grid CAPTCHA handling."""

    wait = WebDriverWait(driver, 15)

    # Wait for CAPTCHA to load
    captcha = wait.until(
        EC.presence_of_element_located(
            (By.CSS_SELECTOR, "[data-sitekey], .bls-captcha")
        )
    )
    sitekey = captcha.get_attribute("data-sitekey")

    # Get instructions
    instructions = None
    try:
        inst = driver.find_element(By.CSS_SELECTOR, ".captcha-instructions")
        instructions = inst.text.strip()
    except Exception:
        pass

    # Solve via CaptchaAI
    solution = solve_bls_grid(sitekey, pageurl, instructions)
    parsed = parse_grid_response(solution)

    # Determine response method
    grid_cells = driver.find_elements(
        By.CSS_SELECTOR, ".captcha-grid .cell, .bls-grid img"
    )

    if grid_cells:
        # Click-based response
        if isinstance(parsed, list) and all(isinstance(x, int) for x in parsed):
            click_grid_cells(driver, parsed)
        else:
            inject_hidden_response(driver, solution)
    else:
        # Hidden input response
        inject_hidden_response(driver, solution)

    # Submit
    submit = driver.find_element(
        By.CSS_SELECTOR, "button[type='submit'], .submit-btn, #verify"
    )
    submit.click()

    return True

Pemecahan Masalah

Pertanyaan Umum

Bagaimana CaptchaAI mengetahui tata letak grid?

CaptchaAI menerima tantangan CAPTCHA dari server BLS dan menyelesaikannya dari jarak jauh. Anda memberikan kunci situs dan url halaman; API menangani analisis grid.

Bagaimana jika gridnya berubah setelah saya kirimkan?

Beberapa formulir BLS menunjukkan tantangan kedua setelah yang pertama dilewati. Tangani ini dengan memeriksa elemen CAPTCHA baru setelah pengiriman.

Bisakah saya menggunakan kembali solusi jaringan BLS?

Tidak. Setiap solusi terikat pada sesi tantangan tertentu. Selalu selesaikan dengan segar.

Panduan Terkait

• BLS CAPTCHA Parameter Deep-Dive
• Cara Mengatasi BLS CAPTCHA Langkah demi Langkah

Menangani tantangan grid BLS — mulai dengan CaptchaAI.