[jira] [Created] (NET-446) Inconsistent short date handling

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[jira] [Created] (NET-446) Inconsistent short date handling

Gary D. Gregory (Jira)
Inconsistent short date handling
--------------------------------

                 Key: NET-446
                 URL: https://issues.apache.org/jira/browse/NET-446
             Project: Commons Net
          Issue Type: Bug
          Components: FTP
    Affects Versions: 3.1
            Reporter: Sebb
            Priority: Minor


Most FTP servers seem to use short dates when the file date is within +/- 6 months of the server clock.
Some may use a different strategy, for example +0 / -12 months.
The code currently (3.2 SNAPSHOT - r1295237) assumes short dates are always in the past, unless "lenient future date" is selected, in which case a day's grace is allowed, i.e. +1 day / -364 days.

However, when dealing with Feb 29th, the code does not handle the case where the server clock is in the following year.

Since most FTP servers use +/- 6 months for short dates, this is not generally a problem.

Equally, the code does not deal with future dates more than a day in advance, since that is usally all that is needed for handling different time zones. (Is it likely that an FTP server has genuine future-dated files?)

See https://issues.apache.org/jira/browse/NET-188#comment-12579253 for a suggested API to specify short-date ranges.

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[jira] [Updated] (NET-446) Inconsistent short date handling

Gary D. Gregory (Jira)

     [ https://issues.apache.org/jira/browse/NET-446?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Sebb updated NET-446:
---------------------

    Issue Type: Improvement  (was: Bug)
   

> Inconsistent short date handling
> --------------------------------
>
>                 Key: NET-446
>                 URL: https://issues.apache.org/jira/browse/NET-446
>             Project: Commons Net
>          Issue Type: Improvement
>          Components: FTP
>    Affects Versions: 3.1
>            Reporter: Sebb
>            Priority: Minor
>
> Most FTP servers seem to use short dates when the file date is within +/- 6 months of the server clock.
> Some may use a different strategy, for example +0 / -12 months.
> The code currently (3.2 SNAPSHOT - r1295237) assumes short dates are always in the past, unless "lenient future date" is selected, in which case a day's grace is allowed, i.e. +1 day / -364 days.
> However, when dealing with Feb 29th, the code does not handle the case where the server clock is in the following year.
> Since most FTP servers use +/- 6 months for short dates, this is not generally a problem.
> Equally, the code does not deal with future dates more than a day in advance, since that is usally all that is needed for handling different time zones. (Is it likely that an FTP server has genuine future-dated files?)
> See https://issues.apache.org/jira/browse/NET-188#comment-12579253 for a suggested API to specify short-date ranges.

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