/** HTML escape */
function escapeHtml(unsafe) {
return unsafe
.replace(/&/g, "&")
.replace(//g, ">")
.replace(/"/g, """)
.replace(/'/g, "'");
}
/** Escape URL chars that could throw off the meta redirect tag */
function sanitizeUrl(unsafe) {
return unsafe
.replace(/;/g, "%3B");
}
/**
* Remove the most risky characters from a filename string
*
* Firefox doesn't allow these: |"*?:<>
*/
function cleanFilename(unsafe) {
return unsafe
.replace(/::/g, " - ") // common delimiter (e.g. My Cool Article :: Website.com)
.replace(/[?*]+/g, " ") // this is just noise, drop it
.replace(/[\<\[]/g, "(")
.replace(/[\>\]]/g, ")")
.replace(/ :/g, " -")
.replace(/: /g, " ")
.replace(/:/g, "_")
.replace(/"/g, "'") // firefox hates double quote
.replace(/[/\\|]/g, "-") // porobable delimiters that should be kept in some form
.replace(/-+/g, "-") // collapse multiple hyphen (may result from substitutions)
.replace(/[\+=]/g, "_") // other suspicious stuff
.replace(/\s+/g, " ") // collapse multiple whitespace
.replace(/[\._,-]+$/g, "") // the filename should not end on special chars
.replace(/^[\._,-]+/g, "") // nor start
.trim();
}
browser.browserAction.onClicked.addListener((tab) => {
const escapedUrl = escapeHtml(sanitizeUrl(tab.url));
const escapedTitle = escapeHtml(tab.title);
const filename = cleanFilename(tab.title);
console.log(`Escaped URL: "${escapedUrl}"`);
console.log(`Escaped title: "${escapedTitle}"`);
console.log(`Saving as: "${filename}"`);
const html = `
${escapedTitle}
Redirecting to: ${escapedUrl}
`;
const content = new Blob([html]);
//console.log(`Generated HTML:\n${html}`);
browser.downloads.download({
filename: `${filename}.link.html`,
url: URL.createObjectURL(content)
});
});