Function strlcat

payloads/libpayload/libc/string.c:163–179

* Concatenates two strings with a maximum length. * * @param d The destination string. * @param s The source string. * @param n d will have at most n-1 characters (plus NUL) after invocation. * @return The total length of the concatenated string. */

 * @return The total length of the concatenated string.
 */
size_t strlcat(char *d, const char *s, size_t n)
{
	size_t sl = strlen(s);
	size_t dl = strlen(d);

	if (n <= dl + 1)
		return sl + dl;

	char *p = d + dl;
	size_t max = n > (sl + dl) ? sl : (n - dl - 1);

	for (size_t i = 0; i < max; i++)
		p[i] = s[i];

	p[max] = '\0';
	return sl + dl;
}

/**
 * Find a character in a string.