RFR: JDK-8288207: Enhance MalformedURLException in Uri.parseCompat [v4]

[Matthias Baesken]

> When trying to construct an LdapURL object with a bad input string (in this example the _ in ad_jbs is causing issues), and not using
> the backward compatibility flag -Dcom.sun.jndi.ldapURLParsing="legacy" we run into the exception below :
> 
> import com.sun.jndi.ldap.LdapURL;
>  ....
> String url = "ldap://ad_jbs.ttt.net:389/xyz"; // bad input string containing _
> LdapURL ldapUrl = new LdapURL(url);
> 
> 
> java --add-opens java.naming/com.sun.jndi.ldap=ALL-UNNAMED LdapParseUrlTest
> Exception in thread "main" javax.naming.NamingException: Cannot parse url: ldap://ad_jbs.ttt.net:389/xyz [Root exception is java.net.MalformedURLException: unsupported authority: ad_jbs.ttt.net:389]
> at java.naming/com.sun.jndi.ldap.LdapURL.<init>(LdapURL.java:115)
> at LdapParseUrlTest.main(LdapParseUrlTest.java:9)
> Caused by: java.net.MalformedURLException: unsupported authority: ad_jbs.ttt.net:389
> at java.naming/com.sun.jndi.toolkit.url.Uri.parseCompat(Uri.java:367)
> at java.naming/com.sun.jndi.toolkit.url.Uri.parse(Uri.java:230)
> at java.naming/com.sun.jndi.toolkit.url.Uri.init(Uri.java:174)
> at java.naming/com.sun.jndi.ldap.LdapURL.<init>(LdapURL.java:105)
> 
> I would like to add the host and port info to the exception (in the example it is host:port of URI:null:-1] ) so that it is directly visible that the input caused the construction of a URI
> with "special"/problematic host and port values.

Matthias Baesken has updated the pull request incrementally with one additional commit since the last revision:

  avoid very long line

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

Changes:
  - all: https://git.openjdk.org/jdk/pull/9126/files
  - new: https://git.openjdk.org/jdk/pull/9126/files/bdbe2204..8f528226

Webrevs:
 - full: https://webrevs.openjdk.java.net/?repo=jdk&pr=9126&range=03
 - incr: https://webrevs.openjdk.java.net/?repo=jdk&pr=9126&range=02-03

  Stats: 2 lines in 1 file changed: 1 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk/pull/9126.diff
  Fetch: git fetch https://git.openjdk.org/jdk pull/9126/head:pull/9126

PR: https://git.openjdk.org/jdk/pull/9126