Github user zwoop commented on a diff in the pull request:
https://github.com/apache/trafficserver/pull/866#discussion_r74707817
--- Diff: proxy/logging/LogUtils.cc ---
@@ -359,6 +359,23 @@ LogUtils::escapify_url(Arena *arena, char *url, size_t
len_in, int *len_out, cha
while (from < in_url_end) {
unsigned char c = *from;
if (map[c / 8] & (1 << (7 - c % 8))) {
+ /*
+ * If two characters following a '%' don't need to be encoded, then
it must
+ * mean that the three character sequence is already encoded. Just
copy it over.
+ */
+ if ((*from == '%') && ((from + 2) < in_url_end)) {
+ unsigned char c1 = *(from + 1);
+ unsigned char c2 = *(from + 2);
+ bool needsEncoding = ((map[c1 / 8] & (1 << (7 - c1 % 8))) ||
(map[c2 / 8] & (1 << (7 - c2 % 8))));
+ if (!needsEncoding) {
+ out_len -= 2;
+ *to++ = *from;
+ from++;
+ Debug("log-utils", "character already encoded..skipping %c, %c,
%c", *from, *(from + 1), *(from + 2));
--- End diff --
AH, I see, out_len is padded with count*2 (where count is the number of
special characters). So, out_len -=2 is correct.
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