464 lines
19 KiB
Go
464 lines
19 KiB
Go
package main
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import (
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"encoding/json"
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"net/http"
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"os"
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"path/filepath"
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"regexp"
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"strings"
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)
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type mraidIssue struct {
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ID string `json:"id"`
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Severity string `json:"severity"`
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Title string `json:"title"`
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Detail string `json:"detail"`
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Line int `json:"line,omitempty"`
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Reference string `json:"reference"`
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}
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type mraidResult struct {
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File string `json:"file"`
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OK bool `json:"ok"`
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Issues []mraidIssue `json:"issues"`
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}
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type mraidRule struct {
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ID string
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Severity string
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Title string
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Detail string
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Reference string
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Test func(mraidContext, mraidRule) *mraidIssue
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}
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type mraidContext struct {
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HTML string
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ScriptText string
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MraidCallLines map[string]int
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}
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func MraidPage(w http.ResponseWriter, r *http.Request) {
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body := `
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<header class="tool-header">
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<h2 class="tool-title">MRAID Checker</h2>
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<p class="tool-description">Static checks for AppLovin, ironSource, and Unity folder HTML builds based on MRAID 3.0 requirements and best practices from mraidDocuments/.</p>
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</header>
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<section class="tool-panel">
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<div class="panel-header"><h3 class="panel-title">Inputs</h3></div>
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<div class="panel-body">
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<div class="control-group">
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<div class="file-row">
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<button id="pickFolder" class="secondary">Select Folder</button>
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<button id="pickFiles" class="secondary">Select File(s)</button>
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<button id="clear" class="secondary">Clear</button>
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</div>
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<div id="selection" class="selected-list"></div>
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</div>
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<div class="action-row"><button id="scan">Scan</button></div>
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<div id="status" class="status-panel"></div>
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</div>
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</section>
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<div id="results" class="results-panel"></div>
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<style>
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.row-result { padding:8px 0; border-bottom:1px solid #333; }
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.file-head { display:flex; gap:8px; align-items:baseline; font-family:Consolas, monospace; font-size:12px; }
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.mark { width:20px; flex-shrink:0; font-weight:bold; }
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.mark.ok { color:#3fb950; } .mark.bad { color:#f85149; }
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.file-name { word-break:break-all; }
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.counts { opacity:0.7; margin-left:auto; white-space:nowrap; }
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.issues { margin:6px 0 0 28px; padding:0; }
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.issue { list-style:none; margin:6px 0; }
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.badge { display:inline-block; min-width:82px; margin-right:6px; padding:1px 5px; border-radius:3px; font-size:11px; text-align:center; }
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.requirement { color:#ffb4ad; background:rgba(248,81,73,0.18); }
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.best-practice { color:#ffd580; background:rgba(210,153,34,0.18); }
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.issue-title { font-weight:600; }
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.issue-detail { opacity:0.72; margin-top:2px; }
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.summary { opacity:0.85; margin-bottom:6px; }
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</style>
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<script>
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const folderEl = document.getElementById('folder');
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const statusEl = document.getElementById('status');
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const resultsEl = document.getElementById('results');
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const selectionEl = document.getElementById('selection');
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const PAGE_SIZE = 5;
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let pickedFiles = [];
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let selectedPage = 0;
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function escapeText(value){ return String(value).replace(/[&<>"']/g, ch => ({'&':'&','<':'<','>':'>','"':'"',"'":'''}[ch])); }
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function basename(p) { const i = Math.max(p.lastIndexOf('/'), p.lastIndexOf('\\')); return i >= 0 ? p.slice(i + 1) : p; }
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function renderSelection() {
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const oldPager = document.getElementById('selectedPager');
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if (oldPager) oldPager.remove();
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if (!pickedFiles.length) {
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selectionEl.innerHTML = '<span class="file-name">(no files selected)</span>';
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return;
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}
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const maxPage = Math.max(0, Math.ceil(pickedFiles.length / PAGE_SIZE) - 1);
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selectedPage = Math.min(selectedPage, maxPage);
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const start = selectedPage * PAGE_SIZE;
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const visible = pickedFiles.slice(start, start + PAGE_SIZE);
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selectionEl.innerHTML = '<div class="results-panel" style="margin-top:0;"><table class="data-table">' +
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'<thead><tr><th>Filename</th><th style="width:44px;"></th></tr></thead><tbody>' +
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visible.map((p, offset) => {
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const i = start + offset;
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return '<tr><td class="mono wrap">' + escapeText(basename(p)) + '</td><td><button class="remove-selected danger" data-index="' + i + '" title="Remove">×</button></td></tr>';
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}).join('') + '</tbody></table></div>';
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selectionEl.querySelectorAll('.remove-selected').forEach(btn => {
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btn.addEventListener('click', () => { pickedFiles.splice(Number(btn.dataset.index), 1); renderSelection(); });
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});
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if (pickedFiles.length > PAGE_SIZE) {
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const pager = document.createElement('div');
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pager.id = 'selectedPager';
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pager.className = 'pager';
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pager.innerHTML = '<button class="secondary" id="prevPage"' + (selectedPage === 0 ? ' disabled' : '') + '>Previous</button>' +
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'<span class="file-name">Page ' + (selectedPage + 1) + ' of ' + (maxPage + 1) + '</span>' +
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'<button class="secondary" id="nextPage"' + (selectedPage === maxPage ? ' disabled' : '') + '>Next</button>';
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selectionEl.appendChild(pager);
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pager.querySelector('#prevPage').addEventListener('click', () => { selectedPage--; renderSelection(); });
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pager.querySelector('#nextPage').addEventListener('click', () => { selectedPage++; renderSelection(); });
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}
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}
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function addPaths(paths) {
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const existing = new Set(pickedFiles);
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pickedFiles = pickedFiles.concat((paths || []).filter(p => !existing.has(p)));
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selectedPage = Math.max(0, Math.ceil(pickedFiles.length / PAGE_SIZE) - 1);
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renderSelection();
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}
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renderSelection();
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document.getElementById('pickFolder').addEventListener('click', async () => {
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const r = await fetch('/api/mraid/pickFolder', { method: 'POST' });
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const j = await r.json();
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addPaths(j.paths || []);
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});
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document.getElementById('pickFiles').addEventListener('click', async () => {
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const r = await fetch('/api/mraid/pickFiles', { method: 'POST' });
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const j = await r.json();
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addPaths(j.paths || []);
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});
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document.getElementById('clear').addEventListener('click', () => {
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pickedFiles = [];
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selectedPage = 0;
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statusEl.textContent = '';
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resultsEl.innerHTML = '';
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renderSelection();
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});
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document.getElementById('scan').addEventListener('click', async () => {
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statusEl.textContent = 'Scanning...';
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resultsEl.innerHTML = '';
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if (!pickedFiles.length) { statusEl.textContent = 'Pick files first.'; return; }
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const payload = { files: pickedFiles };
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const r = await fetch('/api/mraid/scan', { method:'POST', headers:{'Content-Type':'application/json'}, body: JSON.stringify(payload) });
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const j = await r.json();
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if (j.error) { statusEl.textContent = 'Error: ' + j.error; return; }
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const total = j.results.length;
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const withIssues = j.results.filter(r => !r.ok).length;
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const requirements = j.results.reduce((n, r) => n + r.issues.filter(i => i.severity === 'requirement').length, 0);
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const bestPractices = j.results.reduce((n, r) => n + r.issues.filter(i => i.severity === 'best-practice').length, 0);
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const skipped = Number(j.skipped || 0);
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const skippedReason = j.skippedReason || 'file(s).';
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const skippedText = skipped ? ' Skipped ' + skipped + ' ' + skippedReason : '';
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statusEl.textContent = 'Scanned ' + total + ' HTML file(s). ' + withIssues + ' file(s) need review.' + skippedText;
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if (!total) { resultsEl.innerHTML = ''; return; }
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resultsEl.innerHTML = '<table class="data-table"><thead><tr><th>File</th><th>Results</th></tr></thead><tbody></tbody></table>';
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const tbody = resultsEl.querySelector('tbody');
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for (const rr of j.results) {
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const row = document.createElement('tr');
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const file = document.createElement('td');
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file.className = 'mono wrap';
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file.textContent = rr.file;
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const result = document.createElement('td');
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result.className = 'wrap';
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if (!rr.ok) {
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const list = document.createElement('ul');
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list.className = 'issues';
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for (const i of rr.issues) {
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const item = document.createElement('li');
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item.className = 'issue';
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const line = i.line ? ' line ' + i.line + ':' : '';
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item.innerHTML = '<span class="badge ' + i.severity + '">' + escapeText(i.severity) + '</span><span class="issue-title">' + escapeText(line + ' ' + i.title) + '</span><div class="issue-detail">' + escapeText(i.detail) + '</div>';
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list.appendChild(item);
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}
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result.appendChild(list);
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} else {
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result.innerHTML = '<span class="badge ok">OK</span>';
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}
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row.append(file, result);
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tbody.appendChild(row);
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}
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});
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</script>
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`
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w.Header().Set("Content-Type", "text/html; charset=utf-8")
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_, _ = w.Write([]byte(Page("/mraid", "MRAID Checker", body)))
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}
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func MraidPickFolder(w http.ResponseWriter, r *http.Request) {
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p := PickFolder("Select folder to scan", "")
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if p == "" {
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writeJSON(w, map[string]any{"paths": []string{}})
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return
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}
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files := []string{}
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for _, f := range collectHTMLFiles(p) {
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if isInSupportedMraidFolderPath(f) {
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files = append(files, f)
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}
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}
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writeJSON(w, map[string]any{"paths": files})
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}
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func MraidPickFiles(w http.ResponseWriter, r *http.Request) {
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paths := PickFiles("Select HTML files", []FileFilter{{Name: "HTML", Extensions: []string{"html", "htm"}}}, true, "")
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writeJSON(w, map[string]any{"paths": paths})
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}
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func MraidScan(w http.ResponseWriter, r *http.Request) {
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var req struct {
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Folder string `json:"folder"`
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Files []string `json:"files"`
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}
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if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
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writeJSON(w, map[string]any{"results": []mraidResult{}, "error": err.Error()})
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return
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}
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var targets []string
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var baseDir string
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skipped := 0
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skippedReason := ""
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noTargetsError := "No HTML files were found."
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if len(req.Files) > 0 {
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var existing []string
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for _, f := range req.Files {
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if fileExists(f) {
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existing = append(existing, f)
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}
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}
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targets = existing
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skipped = len(req.Files) - len(existing)
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skippedReason = "missing file(s)."
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noTargetsError = "No selected HTML files were found."
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if len(targets) > 0 {
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baseDir = commonBaseDir(targets)
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}
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} else if req.Folder != "" && fileExists(req.Folder) {
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all := collectHTMLFiles(req.Folder)
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for _, f := range all {
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if isInSupportedMraidFolderPath(f) {
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targets = append(targets, f)
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}
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}
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skipped = len(all) - len(targets)
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skippedReason = "HTML file(s) outside AppLovin/ironSource/Unity folders."
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noTargetsError = "No AppLovin, ironSource, or Unity folder HTML files were found."
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baseDir = req.Folder
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} else {
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writeJSON(w, map[string]any{"results": []mraidResult{}, "error": "Pick a folder or files first"})
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return
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}
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if len(targets) == 0 {
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writeJSON(w, map[string]any{"results": []mraidResult{}, "skipped": skipped, "skippedReason": skippedReason, "error": noTargetsError})
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return
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}
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results := []mraidResult{}
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for _, file := range targets {
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data, err := os.ReadFile(file)
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if err != nil {
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continue
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}
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issues := checkMraid(string(data))
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display := file
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if baseDir != "" {
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if rel, err := filepath.Rel(baseDir, file); err == nil && rel != "" {
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display = rel
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} else {
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display = filepath.Base(file)
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}
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}
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results = append(results, mraidResult{File: display, OK: len(issues) == 0, Issues: issues})
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}
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writeJSON(w, map[string]any{"results": results, "skipped": skipped, "skippedReason": skippedReason})
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}
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var (
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mraidScriptRx = regexp.MustCompile(`(?is)<script\b[^>]*>(.*?)</script>`)
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mraidCallRx = regexp.MustCompile(`(?i)\bmraid\s*\.\s*([a-zA-Z_$][\w$]*)\s*\(`)
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mraidReferenceRx = regexp.MustCompile(`(?i)\bmraid\b`)
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mraidWindowOpenRx = regexp.MustCompile(`(?i)\bwindow\s*\.\s*open\s*\(`)
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mraidLocationNavRx = regexp.MustCompile(`(?i)\blocation\s*\.\s*(href|assign|replace)\b`)
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mraidCloseUiRx = regexp.MustCompile(`(?i)\b(close|dismiss|skip)\b`)
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mraidLoadingLeftRx = regexp.MustCompile(`(?i)mraid\s*\.\s*getState\s*\(\s*\)\s*={0,2}\s*['"]loading['"]`)
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mraidLoadingRightRx = regexp.MustCompile(`(?i)['"]loading['"]\s*={0,2}\s*mraid\s*\.\s*getState\s*\(\s*\)`)
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)
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const mraidReference = "MRAID 3.0 specification and MRAID 3.0 Best Practices Guide in mraidDocuments/"
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func isInSupportedMraidFolderPath(filePath string) bool {
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supported := map[string]bool{
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"al": true,
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"applovin": true,
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"app-lovin": true,
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"is": true,
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"ironsource": true,
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"iron-source": true,
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"iron_source": true,
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"un": true,
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"unity": true,
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"unityads": true,
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"unity-ads": true,
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"unity_ads": true,
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}
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parts := strings.FieldsFunc(strings.ToLower(filepath.Dir(filePath)), func(r rune) bool {
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return r == '/' || r == '\\'
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})
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for _, part := range parts {
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if supported[part] {
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return true
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}
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}
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return false
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}
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func checkMraid(htmlSrc string) []mraidIssue {
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ctx := mraidContext{
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HTML: htmlSrc,
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ScriptText: extractMraidScriptText(htmlSrc),
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MraidCallLines: collectMraidCallLines(htmlSrc),
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}
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var out []mraidIssue
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for _, rule := range mraidRules {
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if found := rule.Test(ctx, rule); found != nil {
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out = append(out, *found)
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}
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}
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if out == nil {
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out = []mraidIssue{}
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}
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return out
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}
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func extractMraidScriptText(htmlSrc string) string {
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var parts []string
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for _, m := range mraidScriptRx.FindAllStringSubmatch(htmlSrc, -1) {
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parts = append(parts, m[1])
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}
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return strings.Join(parts, "\n")
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}
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func collectMraidCallLines(htmlSrc string) map[string]int {
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out := map[string]int{}
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for idx, line := range strings.Split(htmlSrc, "\n") {
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for _, m := range mraidCallRx.FindAllStringSubmatch(line, -1) {
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if _, ok := out[m[1]]; !ok {
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out[m[1]] = idx + 1
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}
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}
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}
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return out
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}
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func mraidHasReference(ctx mraidContext) bool { return mraidReferenceRx.MatchString(ctx.HTML) }
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func mraidHasCall(ctx mraidContext, method string) bool {
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_, ok := ctx.MraidCallLines[method]
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return ok
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}
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func mraidLine(ctx mraidContext, method string) int { return ctx.MraidCallLines[method] }
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func mraidHasEventListener(ctx mraidContext, eventName string) bool {
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rx := regexp.MustCompile(`(?i)mraid\s*\.\s*addEventListener\s*\(\s*['"]` + regexp.QuoteMeta(eventName) + `['"]`)
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return rx.MatchString(ctx.ScriptText)
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}
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func mraidHasSupportCheck(ctx mraidContext, feature string) bool {
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rx := regexp.MustCompile(`(?i)mraid\s*\.\s*supports\s*\(\s*['"]` + regexp.QuoteMeta(feature) + `['"]`)
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return rx.MatchString(ctx.ScriptText)
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}
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func mraidHasReadyGate(ctx mraidContext) bool {
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return mraidHasEventListener(ctx, "ready") || mraidLoadingLeftRx.MatchString(ctx.ScriptText) || mraidLoadingRightRx.MatchString(ctx.ScriptText)
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}
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func mraidIssueFrom(rule mraidRule, line int) *mraidIssue {
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found := mraidIssue{ID: rule.ID, Severity: rule.Severity, Title: rule.Title, Detail: rule.Detail, Reference: rule.Reference}
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if line > 0 {
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found.Line = line
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}
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return &found
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}
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var mraidRules = []mraidRule{
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{ID: "mraid-reference", Severity: "requirement", Title: "MRAID API reference not found", Detail: "Playable HTML should use the injected mraid object when it depends on an MRAID container.", Reference: mraidReference, Test: func(ctx mraidContext, rule mraidRule) *mraidIssue {
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if mraidHasReference(ctx) {
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return nil
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}
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return mraidIssueFrom(rule, 0)
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}},
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{ID: "ready-gate", Severity: "requirement", Title: "MRAID ready state is not guarded", Detail: "Gate ad startup behind mraid.ready, or call startup immediately only when mraid.getState() is not loading.", Reference: mraidReference, Test: func(ctx mraidContext, rule mraidRule) *mraidIssue {
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if !mraidHasReference(ctx) || mraidHasReadyGate(ctx) {
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return nil
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}
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return mraidIssueFrom(rule, 0)
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}},
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{ID: "error-listener", Severity: "best-practice", Title: "No MRAID error listener found", Detail: "Listen for mraid error events so unsupported or failed MRAID calls can be logged or handled gracefully.", Reference: mraidReference, Test: func(ctx mraidContext, rule mraidRule) *mraidIssue {
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if !mraidHasReference(ctx) || mraidHasEventListener(ctx, "error") {
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return nil
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}
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return mraidIssueFrom(rule, 0)
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}},
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{ID: "viewability", Severity: "best-practice", Title: "Viewability handling not found", Detail: "Use mraid.isViewable() and/or viewableChange before starting animation, audio, video, or timers.", Reference: mraidReference, Test: func(ctx mraidContext, rule mraidRule) *mraidIssue {
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if !mraidHasReference(ctx) || mraidHasCall(ctx, "isViewable") || mraidHasEventListener(ctx, "viewableChange") || mraidHasEventListener(ctx, "exposureChange") {
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return nil
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}
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return mraidIssueFrom(rule, 0)
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}},
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{ID: "open-api", Severity: "requirement", Title: "Browser navigation used instead of mraid.open", Detail: "Use mraid.open(url) for click-through navigation inside an MRAID ad container.", Reference: mraidReference, Test: func(ctx mraidContext, rule mraidRule) *mraidIssue {
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if (mraidWindowOpenRx.MatchString(ctx.ScriptText) || mraidLocationNavRx.MatchString(ctx.ScriptText)) && !mraidHasCall(ctx, "open") {
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return mraidIssueFrom(rule, 0)
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}
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return nil
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}},
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{ID: "close-api", Severity: "best-practice", Title: "No mraid.close call found", Detail: "If the creative renders its own close control, wire that control to mraid.close().", Reference: mraidReference, Test: func(ctx mraidContext, rule mraidRule) *mraidIssue {
|
||
if mraidCloseUiRx.MatchString(ctx.HTML) && !mraidHasCall(ctx, "close") {
|
||
return mraidIssueFrom(rule, 0)
|
||
}
|
||
return nil
|
||
}},
|
||
{ID: "expand-support", Severity: "requirement", Title: "mraid.expand used without supports check", Detail: "Check mraid.supports(\"expand\") before using expand behavior.", Reference: mraidReference, Test: func(ctx mraidContext, rule mraidRule) *mraidIssue {
|
||
if mraidHasCall(ctx, "expand") && !mraidHasSupportCheck(ctx, "expand") {
|
||
return mraidIssueFrom(rule, mraidLine(ctx, "expand"))
|
||
}
|
||
return nil
|
||
}},
|
||
{ID: "resize-support", Severity: "requirement", Title: "mraid.resize used without supports check", Detail: "Check mraid.supports(\"resize\") before using resize behavior.", Reference: mraidReference, Test: func(ctx mraidContext, rule mraidRule) *mraidIssue {
|
||
if mraidHasCall(ctx, "resize") && !mraidHasSupportCheck(ctx, "resize") {
|
||
return mraidIssueFrom(rule, mraidLine(ctx, "resize"))
|
||
}
|
||
return nil
|
||
}},
|
||
{ID: "orientation-support", Severity: "best-practice", Title: "Orientation properties set without supports check", Detail: "Check mraid.supports(\"orientation\") before requiring orientation behavior.", Reference: mraidReference, Test: func(ctx mraidContext, rule mraidRule) *mraidIssue {
|
||
if mraidHasCall(ctx, "setOrientationProperties") && !mraidHasSupportCheck(ctx, "orientation") {
|
||
return mraidIssueFrom(rule, mraidLine(ctx, "setOrientationProperties"))
|
||
}
|
||
return nil
|
||
}},
|
||
{ID: "size-change", Severity: "best-practice", Title: "No sizeChange listener found", Detail: "Listen for sizeChange when layout depends on container size, resize, expand, or orientation behavior.", Reference: mraidReference, Test: func(ctx mraidContext, rule mraidRule) *mraidIssue {
|
||
depends := mraidHasCall(ctx, "getMaxSize") || mraidHasCall(ctx, "getScreenSize") || mraidHasCall(ctx, "resize") || mraidHasCall(ctx, "expand") || mraidHasCall(ctx, "setOrientationProperties")
|
||
if depends && !mraidHasEventListener(ctx, "sizeChange") {
|
||
return mraidIssueFrom(rule, 0)
|
||
}
|
||
return nil
|
||
}},
|
||
{ID: "state-change", Severity: "best-practice", Title: "No stateChange listener found", Detail: "Listen for stateChange when using expand, resize, close, or other state-changing container behavior.", Reference: mraidReference, Test: func(ctx mraidContext, rule mraidRule) *mraidIssue {
|
||
changes := mraidHasCall(ctx, "expand") || mraidHasCall(ctx, "resize") || mraidHasCall(ctx, "close")
|
||
if changes && !mraidHasEventListener(ctx, "stateChange") {
|
||
return mraidIssueFrom(rule, 0)
|
||
}
|
||
return nil
|
||
}},
|
||
}
|