RFR: 8282395: URL.openConnection can throw IOOBE [v4]

[KIRIYAMA Takuya]

> I fixed sun.net.www.ParseUtil.decode().
> 
> ParseUtil.decode() always tries to decode after parsing '%', so if '%' is located at the end of the String, IndexOutOfBoundsException is thrown. Also, if '%' is shown after decodable string and following string is not decodable (e.g: "%25%s%G1"), ParseUtil.decode() throws IllegalArgumentException.
> 
> But URL standard says below (https://url.spec.whatwg.org/#percent-decode).
> 
> 
> Otherwise, if byte is 0x25 (%) and the next two bytes after byte in input are not in the ranges 
> 0x30 (0) to 0x39 (9), 0x41 (A) to 0x46 (F), and 0x61 (a) to 0x66 (f), all inclusive, append byte to output.
> 
> 
> So, there should be used isEscaped() to judge to decode.
> 
> Would you please review this fix?

KIRIYAMA Takuya has updated the pull request incrementally with one additional commit since the last revision:

  8282395: URL.openConnection can throw IOOBE

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/8155/files
  - new: https://git.openjdk.org/jdk/pull/8155/files/fc84ffc9..b3997951

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=8155&range=03
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=8155&range=02-03

  Stats: 3 lines in 1 file changed: 2 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/8155.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/8155/head:pull/8155

PR: https://git.openjdk.org/jdk/pull/8155