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| author | Arpit Chakladar <arpitchakladar+git@gmail.com> | 2026-07-13 23:32:26 +0530 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2026-07-13 23:32:26 +0530 |
| commit | ce401d03e75bcbfd1cdfa963954e0807219fb80d (patch) | |
| tree | 52a813c1705a952312c20c328b00fa845a3453f9 /src/scripts/login/index.ts | |
| parent | 98e7019c61ea0ffe344ef7ce809d38d62254a9fc (diff) | |
| parent | dfba7ff6fff7bde33b40a343a2318b35c429b40f (diff) | |
| download | banglar-bhumi-utils-ce401d03e75bcbfd1cdfa963954e0807219fb80d.tar.gz banglar-bhumi-utils-ce401d03e75bcbfd1cdfa963954e0807219fb80d.zip | |
Merge pull request #6 from arpitchakladar/adding-documentation-comments
Adding documentation comments
Diffstat (limited to 'src/scripts/login/index.ts')
| -rw-r--r-- | src/scripts/login/index.ts | 109 |
1 files changed, 0 insertions, 109 deletions
diff --git a/src/scripts/login/index.ts b/src/scripts/login/index.ts deleted file mode 100644 index bed05f9..0000000 --- a/src/scripts/login/index.ts +++ /dev/null @@ -1,109 +0,0 @@ -import { interceptPost, interceptGet } from "@/shared/intercept-jquery-ajax"; - -function prepareCaptcha(ctx: CanvasRenderingContext2D, width: number, height: number) { - const imgData = ctx.getImageData(0, 0, width, height); - const data = imgData.data; - const radius = 1; - - function isBlack(r: number, g: number, b: number) { - return r < 50 && g < 50 && b < 50; - } - - function isGrayish(r: number, g: number, b: number) { - return Math.abs(r - g) < 15 && Math.abs(g - b) < 15 && r > 100 && r < 200; - } - - function hasNearbyBlack(x: number, y: number) { - for (let dx = -radius; dx <= radius; dx++) { - for (let dy = -radius; dy <= radius; dy++) { - const nx = x + dx; - const ny = y + dy; - if (nx >= 0 && nx < width && ny >= 0 && ny < height) { - const i = (ny * width + nx) * 4; - if (isBlack(data[i], data[i + 1], data[i + 2])) return true; - } - } - } - return false; - } - - for (let y = 0; y < height; y++) { - for (let x = 0; x < width; x++) { - const i = (y * width + x) * 4; - const [r, g, b] = [data[i], data[i + 1], data[i + 2]]; - if (isGrayish(r, g, b) && !hasNearbyBlack(x, y)) { - data[i] = data[i + 1] = data[i + 2] = 255; - } - } - } - for (let y = 0; y < height; y++) { - for (let x = 0; x < width; x++) { - const i = (y * width + x) * 4; - const [r, g, b] = [data[i], data[i + 1], data[i + 2]]; - - if (isGrayish(r, g, b)) { - data[i] = data[i + 1] = data[i + 2] = 0; // make black - } - } - } - ctx.putImageData(imgData, 0, 0); -} - -const observer = new MutationObserver((mutationsList, obs) => { - for (const mutation of mutationsList) { - for (const node of mutation.addedNodes) { - if ((node as any).nodeType === 1 && (node as any).id === "loginform") { - const img = (node as HTMLFormElement).querySelector("#captchaImg") as HTMLImageElement; - const captchaInput = (node as HTMLFormElement).querySelector("#txtInput") as HTMLInputElement; - - // Wait for image to load to get correct dimensions - img.addEventListener("load", async () => { - const { width, height } = img; - - // 1. Create canvas - const canvas = document.createElement("canvas"); - canvas.width = width; - canvas.height = height; - canvas.style.display = "block"; - - // 2. Copy styles (optional) - canvas.style.cssText = getComputedStyle(img).cssText; - canvas.style.display = "none"; - - // 3. Insert canvas before image - img.parentNode!.querySelectorAll("canvas").forEach(c => c.remove()); - img.parentNode!.insertBefore(canvas, img); - - // 4. Hide image - img.style.display = "none"; - - // 5. Draw the image onto the canvas - const ctx = canvas.getContext("2d")!; - ctx.drawImage(img, 0, 0); - prepareCaptcha(ctx, canvas.width, canvas.height); - canvas.style.display = ""; - const dataURL = canvas.toDataURL("image/png"); - - // Perform OCR - chrome.runtime.sendMessage( - { type: "OCR", dataURL }, - ({ success, text, confidence }) => { - if (success) { - const textResult = text.trim(); - if (confidence < 80 || textResult.length !== 6) { - // Reset the captcha if confidence is low - img.src = "generateCaptcha?" + new Date().getTime(); - } else { - captchaInput.value = textResult; - } - } - }, - ); - }); - } - } - } -}); - -// Start observing the body -observer.observe(document.body, { childList: true, subtree: true }); |
