Re: [PATCH] fetch: Strip usernames from url's before storing them

> +/*
> + * strip username information from the url
> + * This will allocate a new string, or return its argument
> + * if no stripping is necessary.
> + *
> + * The url's we want to catch are the following:
> + *   ssh://[user@]host.xz[:port]/path/to/repo.git/
> + *   [user@]host.xz:/path/to/repo.git/
> + *   http[s]://[user[:password]@]host.xz/path/to/repo.git
> + *
> + * Although git doesn't currently support giving the password
> + * to http url's on the command-line, it's easier to catch
> + * that case too than it is to cater for it specially.
> + */
> +static char *anonymize_url(const char *url)
> +{
> +	char *anon_url;
> +	const char *at_sign = strchr(url, '@');
> +	size_t prefix_len = 0;
> +
> +	if (!at_sign)

> +		return strdup(url);
> +
> +	if (!prefixcmp(url, "ssh://"))
> +		prefix_len = strlen("ssh://");
> +	else if (!prefixcmp(url, "http://"))
> +		prefix_len = strlen("http://");
> +	else if (!prefixcmp(url, "https://"))
> +		prefix_len = strlen("https://");
> +	else if (!strchr(at_sign + 1, ':'))
> +		return strdup(url);
> +
> +	anon_url = xcalloc(1, 1 + prefix_len +
> +			   ((unsigned long)at_sign - (unsigned long)url));
> +	if (prefix_len)
> +		memcpy(anon_url, url, prefix_len);
> +	memcpy(anon_url + prefix_len, at_sign + 1, strlen(at_sign + 1));
> +
> +	return anon_url;
> +}