Files
stegasoo/frontends/web/templates/decode.html
2026-01-01 22:51:53 -05:00

664 lines
30 KiB
HTML

{% extends "base.html" %}
{% block title %}Decode Message - Stegasoo{% endblock %}
{% block content %}
<style>
/* Glowing passphrase input */
.passphrase-input {
background: rgba(30, 40, 50, 0.8) !important;
border: 2px solid rgba(99, 179, 237, 0.3) !important;
color: #63b3ed !important;
font-family: 'Courier New', monospace;
font-size: 1.1rem;
letter-spacing: 0.5px;
padding: 12px 16px;
transition: border-color 0.3s ease, box-shadow 0.3s ease, background 0.3s ease;
}
.passphrase-input:focus {
border-color: rgba(99, 179, 237, 0.8) !important;
box-shadow: 0 0 20px rgba(99, 179, 237, 0.4), 0 0 40px rgba(99, 179, 237, 0.2) !important;
background: rgba(30, 40, 50, 0.95) !important;
}
.passphrase-input::placeholder {
color: rgba(99, 179, 237, 0.4);
}
/* Glowing PIN input */
.pin-input-container .form-control {
background: rgba(30, 40, 50, 0.8) !important;
border: 2px solid rgba(246, 173, 85, 0.3) !important;
color: #f6ad55 !important;
font-family: 'Courier New', monospace;
font-size: 1.2rem;
letter-spacing: 3px;
text-align: center;
transition: all 0.3s ease;
}
.pin-input-container .form-control:focus {
border-color: rgba(246, 173, 85, 0.8) !important;
box-shadow: 0 0 20px rgba(246, 173, 85, 0.4), 0 0 40px rgba(246, 173, 85, 0.2) !important;
background: rgba(30, 40, 50, 0.95) !important;
}
.pin-input-container .form-control::placeholder {
color: rgba(246, 173, 85, 0.4);
letter-spacing: 1px;
}
/* QR Crop Animation */
.qr-crop-container {
position: relative;
overflow: hidden;
border-radius: 8px;
background: rgba(0, 0, 0, 0.3);
}
.qr-crop-container img {
display: block;
max-height: 120px;
width: auto;
margin: 0 auto;
transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}
.qr-crop-container .qr-original {
opacity: 1;
}
.qr-crop-container .qr-cropped {
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%) scale(0.3);
opacity: 0;
max-height: 100px;
}
.qr-crop-container.animating .qr-original {
opacity: 0;
transform: scale(1.1);
filter: blur(4px);
}
.qr-crop-container.animating .qr-cropped {
opacity: 1;
transform: translate(-50%, -50%) scale(1);
}
.qr-crop-container .crop-badge {
position: absolute;
bottom: 4px;
right: 4px;
font-size: 0.65rem;
opacity: 0;
transition: opacity 0.3s ease 0.4s;
}
.qr-crop-container.animating .crop-badge {
opacity: 1;
}
</style>
<div class="row justify-content-center">
<div class="col-lg-8">
<div class="card">
<div class="card-header">
<h5 class="mb-0"><i class="bi bi-unlock-fill me-2"></i>Decode Secret Message or File</h5>
</div>
<div class="card-body">
{% if decoded_message %}
<!-- Text Message Result -->
<div class="alert alert-success">
<h6><i class="bi bi-check-circle me-2"></i>Message Decrypted Successfully!</h6>
</div>
<label class="form-label text-muted">Decoded Message:</label>
<div class="alert-message p-3 rounded bg-dark border border-secondary mb-2" id="decodedContent" style="white-space: pre-wrap;">{{ decoded_message }}</div>
<div class="d-flex justify-content-end mb-3">
<button class="btn btn-sm btn-outline-light" onclick="navigator.clipboard.writeText(document.getElementById('decodedContent').innerText).then(() => { this.innerHTML = '<i class=\'bi bi-check\'></i> Copied!'; setTimeout(() => this.innerHTML = '<i class=\'bi bi-clipboard\'></i> Copy', 2000); }).catch(() => alert('Failed to copy'))">
<i class="bi bi-clipboard"></i> Copy
</button>
</div>
<a href="/decode" class="btn btn-outline-light w-100">
<i class="bi bi-arrow-repeat me-2"></i>Decode Another
</a>
{% elif decoded_file %}
<!-- File Result -->
<div class="alert alert-success">
<h6><i class="bi bi-check-circle me-2"></i>File Decrypted Successfully!</h6>
</div>
<div class="text-center mb-4">
<i class="bi bi-file-earmark-check text-success" style="font-size: 4rem;"></i>
<h5 class="mt-3">{{ filename }}</h5>
<p class="text-muted mb-1">{{ file_size }}</p>
{% if mime_type %}
<small class="text-muted">Type: {{ mime_type }}</small>
{% endif %}
</div>
<a href="{{ url_for('decode_download', file_id=file_id) }}" class="btn btn-primary btn-lg w-100 mb-3">
<i class="bi bi-download me-2"></i>Download File
</a>
<div class="alert alert-warning small">
<i class="bi bi-clock me-1"></i>
<strong>File expires in 5 minutes.</strong> Download now.
</div>
<a href="/decode" class="btn btn-outline-light w-100">
<i class="bi bi-arrow-repeat me-2"></i>Decode Another
</a>
{% else %}
<!-- Decode Form -->
<form method="POST" enctype="multipart/form-data" id="decodeForm">
<div class="row">
<div class="col-md-6 mb-3">
<label class="form-label">
<i class="bi bi-image me-1"></i> Reference Photo
</label>
<div class="drop-zone">
<input type="file" name="reference_photo" accept="image/*" required>
<div class="drop-zone-label">
<i class="bi bi-cloud-arrow-up fs-3 d-block mb-2 text-muted"></i>
<span class="text-muted">Drop image or click to browse</span>
</div>
<img class="drop-zone-preview d-none">
</div>
<div class="form-text">
The same reference photo used for encoding
</div>
</div>
<div class="col-md-6 mb-3">
<label class="form-label">
<i class="bi bi-file-earmark-image me-1"></i> Stego Image
</label>
<div class="drop-zone" id="stegoDropZone">
<input type="file" name="stego_image" accept="image/*" required>
<div class="drop-zone-label">
<i class="bi bi-cloud-arrow-up fs-3 d-block mb-2 text-muted"></i>
<span class="text-muted">Drop image or click to browse</span>
</div>
<img class="drop-zone-preview d-none">
</div>
<div class="form-text">
The image containing the hidden message/file
</div>
</div>
</div>
<div class="mb-3">
<label class="form-label">
<i class="bi bi-chat-quote me-1"></i> Passphrase
</label>
<input type="text" name="passphrase" id="passphraseInput" class="form-control passphrase-input"
placeholder="e.g., correct horse battery staple" required>
<div class="form-text">
The passphrase used during encoding (typically 4 words)
</div>
</div>
<hr class="my-4">
<h6 class="text-muted mb-3">
SECURITY FACTORS
<span class="text-warning small">(provide same factors used during encoding)</span>
</h6>
<div class="row">
<div class="col-md-4 mb-3">
<label class="form-label"><i class="bi bi-123 me-1"></i> PIN</label>
<div class="input-group pin-input-container">
<input type="password" name="pin" class="form-control" id="pinInput" placeholder="••••••" maxlength="9" style="max-width: 180px;">
<button class="btn btn-outline-secondary" type="button" id="togglePin">
<i class="bi bi-eye"></i>
</button>
</div>
<div class="form-text">If PIN was used during encoding</div>
</div>
<div class="col-md-8 mb-3">
<label class="form-label">
<i class="bi bi-file-earmark-lock me-1"></i> RSA Key
</label>
<!-- RSA Input Method Toggle -->
<div class="btn-group w-100 mb-2" role="group">
<input type="radio" class="btn-check" name="rsa_input_method" id="rsaMethodFile" value="file" checked>
<label class="btn btn-outline-secondary btn-sm" for="rsaMethodFile">
<i class="bi bi-file-earmark me-1"></i>.pem File
</label>
<input type="radio" class="btn-check" name="rsa_input_method" id="rsaMethodQr" value="qr">
<label class="btn btn-outline-secondary btn-sm" for="rsaMethodQr">
<i class="bi bi-qr-code me-1"></i>QR Code
</label>
</div>
<!-- .pem File Input -->
<div id="rsaFileSection">
<input type="file" name="rsa_key" class="form-control form-control-sm" id="rsaKeyInput" accept=".pem,.key,application/x-pem-file">
</div>
<!-- QR Code Input -->
<div id="rsaQrSection" class="d-none">
<div class="drop-zone p-3" id="qrDropZone">
<input type="file" name="rsa_key_qr" accept="image/*" id="rsaKeyQrInput">
<div class="drop-zone-label text-center">
<i class="bi bi-qr-code-scan fs-4 d-block text-muted mb-1"></i>
<span class="text-muted small">Drop QR image or click to browse</span>
</div>
<!-- Crop animation container -->
<div class="qr-crop-container d-none" id="qrCropContainer">
<img class="qr-original" id="qrOriginal" alt="Original">
<img class="qr-cropped" id="qrCropped" alt="Cropped QR">
<span class="crop-badge badge bg-success"><i class="bi bi-crop me-1"></i>Detected</span>
</div>
</div>
</div>
<!-- Key Password (always visible) -->
<div class="input-group input-group-sm mt-2">
<input type="password" name="rsa_password" class="form-control" id="rsaPasswordInput" placeholder="Key password (if encrypted)">
<button class="btn btn-outline-secondary" type="button" id="toggleRsaPassword">
<i class="bi bi-eye"></i>
</button>
</div>
</div>
</div>
<!-- ================================================================
ADVANCED OPTIONS (v3.0) - Extraction Mode
================================================================ -->
<div class="mb-4">
<a class="btn btn-sm btn-outline-secondary w-100" data-bs-toggle="collapse" href="#advancedOptionsDec" role="button" aria-expanded="false">
<i class="bi bi-gear me-1"></i> Advanced Options
<i class="bi bi-chevron-down ms-1" id="advancedChevronDec"></i>
</a>
<div class="collapse" id="advancedOptionsDec">
<div class="card card-body mt-2 bg-dark border-secondary">
<!-- Extraction Mode Selection -->
<div class="mb-0">
<label class="form-label">
<i class="bi bi-cpu me-1"></i> Extraction Mode
<span class="badge bg-info ms-1">v3.0</span>
</label>
<div class="row g-2">
<!-- Auto Mode -->
<div class="col-4">
<div class="form-check card p-2 text-center h-100" id="autoModeCard">
<input class="form-check-input mx-auto" type="radio" name="embed_mode" id="modeAuto" value="auto" checked>
<label class="form-check-label w-100" for="modeAuto">
<i class="bi bi-magic text-success fs-4 d-block mb-1"></i>
<strong>Auto</strong>
<div class="small text-muted">Try both</div>
</label>
</div>
</div>
<!-- LSB Mode -->
<div class="col-4">
<div class="form-check card p-2 text-center h-100" id="lsbModeCardDec">
<input class="form-check-input mx-auto" type="radio" name="embed_mode" id="modeLsbDec" value="lsb">
<label class="form-check-label w-100" for="modeLsbDec">
<i class="bi bi-grid-3x3-gap text-primary fs-4 d-block mb-1"></i>
<strong>LSB</strong>
<div class="small text-muted">Spatial only</div>
</label>
</div>
</div>
<!-- DCT Mode -->
<div class="col-4">
<div class="form-check card p-2 text-center h-100 {% if not has_dct %}opacity-50{% endif %}" id="dctModeCardDec">
<input class="form-check-input mx-auto" type="radio" name="embed_mode" id="modeDctDec" value="dct" {% if not has_dct %}disabled{% endif %}>
<label class="form-check-label w-100" for="modeDctDec">
<i class="bi bi-soundwave text-info fs-4 d-block mb-1"></i>
<strong>DCT</strong>
<div class="small text-muted">
{% if has_dct %}Frequency only{% else %}N/A{% endif %}
</div>
</label>
</div>
</div>
</div>
<div class="form-text mt-2">
<i class="bi bi-lightbulb me-1"></i>
<strong>Auto</strong> tries LSB first, then DCT. Use specific mode if you know how it was encoded.
{% if not has_dct %}
<br><span class="text-warning"><i class="bi bi-exclamation-triangle me-1"></i>DCT requires scipy: <code>pip install scipy</code></span>
{% endif %}
</div>
</div>
</div>
</div>
</div>
<button type="submit" class="btn btn-primary btn-lg w-100" id="decodeBtn">
<i class="bi bi-unlock me-2"></i>Decode
</button>
</form>
{% endif %}
</div>
</div>
{% if not decoded_message and not decoded_file %}
<div class="card mt-4">
<div class="card-body">
<h6 class="text-muted mb-3"><i class="bi bi-question-circle me-2"></i>Troubleshooting</h6>
<ul class="list-unstyled text-muted small mb-0">
<li class="mb-2">
<i class="bi bi-check-circle-fill text-success me-1"></i>
Use the <strong>exact same reference photo</strong> file (byte-for-byte identical)
</li>
<li class="mb-2">
<i class="bi bi-check-circle-fill text-success me-1"></i>
Enter the <strong>exact passphrase</strong> used during encoding (case-sensitive, spacing matters)
</li>
<li class="mb-2">
<i class="bi bi-check-circle-fill text-success me-1"></i>
Provide the <strong>same security factors</strong> (PIN and/or RSA key) used during encoding
</li>
<li class="mb-2">
<i class="bi bi-exclamation-triangle-fill text-warning me-1"></i>
Ensure the stego image hasn't been <strong>resized, cropped, or recompressed</strong>
</li>
<li class="mb-2">
<i class="bi bi-exclamation-triangle-fill text-warning me-1"></i>
<strong>Format compatibility:</strong> v4.0 cannot decode messages from v3.1 or earlier (different format)
</li>
<li class="mb-2">
<i class="bi bi-info-circle-fill text-info me-1"></i>
If using an RSA key, verify the <strong>password is correct</strong> (if key is encrypted)
</li>
<li class="mb-0">
<i class="bi bi-info-circle-fill text-info me-1"></i>
If auto-detection fails, try specifying <strong>LSB or DCT mode</strong> in Advanced Options
</li>
</ul>
</div>
</div>
{% endif %}
</div>
</div>
{% endblock %}
{% block scripts %}
<script>
// Form submit loading state
document.getElementById('decodeForm')?.addEventListener('submit', function() {
const btn = document.getElementById('decodeBtn');
const selectedMode = document.querySelector('input[name="embed_mode"]:checked')?.value || 'auto';
btn.innerHTML = `<span class="spinner-border spinner-border-sm me-2"></span>Decoding (${selectedMode.toUpperCase()})...`;
btn.disabled = true;
});
// PIN Toggle
document.getElementById('togglePin')?.addEventListener('click', function() {
const input = document.getElementById('pinInput');
const icon = this.querySelector('i');
if (input.type === 'password') {
input.type = 'text';
icon.classList.replace('bi-eye', 'bi-eye-slash');
} else {
input.type = 'password';
icon.classList.replace('bi-eye-slash', 'bi-eye');
}
});
// RSA Password Toggle
document.getElementById('toggleRsaPassword')?.addEventListener('click', function() {
const input = document.getElementById('rsaPasswordInput');
const icon = this.querySelector('i');
if (input.type === 'password') {
input.type = 'text';
icon.classList.replace('bi-eye', 'bi-eye-slash');
} else {
input.type = 'password';
icon.classList.replace('bi-eye-slash', 'bi-eye');
}
});
// RSA Input Method Toggle (File vs QR)
const rsaMethodFile = document.getElementById('rsaMethodFile');
const rsaMethodQr = document.getElementById('rsaMethodQr');
const rsaFileSection = document.getElementById('rsaFileSection');
const rsaQrSection = document.getElementById('rsaQrSection');
function updateRsaInputMethod() {
if (!rsaMethodFile || !rsaFileSection || !rsaQrSection) return;
const isFile = rsaMethodFile.checked;
rsaFileSection.classList.toggle('d-none', !isFile);
rsaQrSection.classList.toggle('d-none', isFile);
}
rsaMethodFile?.addEventListener('change', updateRsaInputMethod);
rsaMethodQr?.addEventListener('change', updateRsaInputMethod);
// Mode card highlighting
const autoModeCard = document.getElementById('autoModeCard');
const lsbModeCardDec = document.getElementById('lsbModeCardDec');
const dctModeCardDec = document.getElementById('dctModeCardDec');
const modeAuto = document.getElementById('modeAuto');
const modeLsbDec = document.getElementById('modeLsbDec');
const modeDctDec = document.getElementById('modeDctDec');
function updateModeCardHighlightDec() {
autoModeCard?.classList.toggle('border-success', modeAuto?.checked);
autoModeCard?.classList.toggle('border-2', modeAuto?.checked);
lsbModeCardDec?.classList.toggle('border-primary', modeLsbDec?.checked);
lsbModeCardDec?.classList.toggle('border-2', modeLsbDec?.checked);
dctModeCardDec?.classList.toggle('border-info', modeDctDec?.checked);
dctModeCardDec?.classList.toggle('border-2', modeDctDec?.checked);
}
modeAuto?.addEventListener('change', updateModeCardHighlightDec);
modeLsbDec?.addEventListener('change', updateModeCardHighlightDec);
modeDctDec?.addEventListener('change', updateModeCardHighlightDec);
updateModeCardHighlightDec(); // Initial state
// Advanced options chevron rotation
document.getElementById('advancedOptionsDec')?.addEventListener('show.bs.collapse', function() {
document.getElementById('advancedChevronDec').classList.add('bi-chevron-up');
document.getElementById('advancedChevronDec').classList.remove('bi-chevron-down');
});
document.getElementById('advancedOptionsDec')?.addEventListener('hide.bs.collapse', function() {
document.getElementById('advancedChevronDec').classList.remove('bi-chevron-up');
document.getElementById('advancedChevronDec').classList.add('bi-chevron-down');
});
// Paste from Clipboard
document.addEventListener('paste', function(e) {
if (!document.getElementById('decodeForm')) return;
const items = e.clipboardData.items;
for (let i = 0; i < items.length; i++) {
if (items[i].type.indexOf("image") !== -1) {
const blob = items[i].getAsFile();
const stegoInput = document.querySelector('input[name="stego_image"]');
const refInput = document.querySelector('input[name="reference_photo"]');
const targetInput = (!stegoInput.files.length) ? stegoInput : refInput;
const container = new DataTransfer();
container.items.add(blob);
targetInput.files = container.files;
targetInput.dispatchEvent(new Event('change'));
break;
}
}
});
// Drag & drop with preview
document.querySelectorAll('.drop-zone').forEach(zone => {
const input = zone.querySelector('input[type="file"]');
const label = zone.querySelector('.drop-zone-label');
const preview = zone.querySelector('.drop-zone-preview');
['dragenter', 'dragover'].forEach(evt => {
zone.addEventListener(evt, e => {
e.preventDefault();
zone.classList.add('drag-over');
});
});
['dragleave', 'drop'].forEach(evt => {
zone.addEventListener(evt, e => {
e.preventDefault();
zone.classList.remove('drag-over');
});
});
zone.addEventListener('drop', e => {
if (e.dataTransfer.files.length) {
input.files = e.dataTransfer.files;
const file = e.dataTransfer.files[0];
showPreview(file);
}
});
input.addEventListener('change', function() {
if (this.files && this.files[0]) {
showPreview(this.files[0]);
}
});
function showPreview(file) {
if (!file.type.startsWith('image/')) return;
const reader = new FileReader();
reader.onload = e => {
if (preview) {
preview.src = e.target.result;
preview.classList.remove('d-none');
}
label.innerHTML = '<i class="bi bi-check-circle text-success me-1"></i>' + file.name;
};
reader.readAsDataURL(file);
}
});
// QR Code RSA Key scanning with crop animation
const rsaKeyQrInput = document.getElementById('rsaKeyQrInput');
const qrCropContainer = document.getElementById('qrCropContainer');
const qrOriginal = document.getElementById('qrOriginal');
const qrCropped = document.getElementById('qrCropped');
if (rsaKeyQrInput) {
rsaKeyQrInput.addEventListener('change', function() {
if (this.files && this.files[0]) {
const file = this.files[0];
if (!file.type.startsWith('image/')) return;
// Reset animation state
qrCropContainer.classList.remove('animating');
qrCropContainer.classList.add('d-none');
// Show original image first
const reader = new FileReader();
reader.onload = e => {
qrOriginal.src = e.target.result;
qrCropContainer.classList.remove('d-none');
// Hide the label
document.querySelector('#qrDropZone .drop-zone-label').classList.add('d-none');
// Now fetch cropped version and animate
const formData = new FormData();
formData.append('image', file);
fetch('/qr/crop', {
method: 'POST',
body: formData
})
.then(response => {
if (!response.ok) {
throw new Error('No QR code detected');
}
return response.blob();
})
.then(blob => {
// Load cropped image
const croppedUrl = URL.createObjectURL(blob);
qrCropped.src = croppedUrl;
// Wait a moment to show original, then animate
setTimeout(() => {
qrCropContainer.classList.add('animating');
}, 400);
// Also verify key extraction works
const keyFormData = new FormData();
keyFormData.append('qr_image', file);
return fetch('/extract-key-from-qr', {
method: 'POST',
body: keyFormData
});
})
.then(response => response.json())
.then(data => {
if (data.success) {
document.querySelector('#qrDropZone .drop-zone-label').innerHTML =
'<i class="bi bi-check-circle text-success me-1"></i>RSA Key loaded';
document.querySelector('#qrDropZone .drop-zone-label').classList.remove('d-none');
}
})
.catch(err => {
// Crop failed - just show original with error
console.log('QR crop/extract error:', err);
document.querySelector('#qrDropZone .drop-zone-label').innerHTML =
'<i class="bi bi-exclamation-triangle text-warning me-1"></i>No QR detected';
document.querySelector('#qrDropZone .drop-zone-label').classList.remove('d-none');
});
};
reader.readAsDataURL(file);
}
});
}
// Auto-resize passphrase input font to fit long passphrases
const passphraseInput = document.getElementById('passphraseInput');
if (passphraseInput) {
// Stepped font sizes (characters -> rem)
const fontSizeSteps = [
{ maxChars: 30, size: 1.1 },
{ maxChars: 45, size: 1.0 },
{ maxChars: 60, size: 0.95 },
{ maxChars: Infinity, size: 0.9 }
];
function adjustPassphraseFontSize() {
const len = passphraseInput.value.length;
for (const step of fontSizeSteps) {
if (len <= step.maxChars) {
passphraseInput.style.fontSize = step.size + 'rem';
break;
}
}
}
passphraseInput.addEventListener('input', adjustPassphraseFontSize);
adjustPassphraseFontSize(); // Initial call in case of pre-filled value
}
</script>
{% endblock %}