[NET-193] FTP throw NullPointerException when enountering 02-29-2008 (leap year bug)

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.4
• Fix Version/s: 1.5, 2.0

Environment

Ant 1.7
commons-net-1.4.1
java 1.6.0_01
Windows 2003 (build machine)
Windows 2003 FTP server

• Assignee: Unassigned
• Reporter: j burtram
• Created: 03/Mar/08 22:56
• Updated: 08/Mar/08 19:50
• Resolved: 08/Mar/08 19:50

Description

ant FTP task blowing up when parsing directories containing ANY items dated (created/modified) February 29 2008.

There may be a workaround using defaultDateFormatConfig or recentDateFormatConfig - but I didn't find it (actually by messing with some of the ftp attributes my build finally stopped throwing NullPointerExceptions, but refused to list or get any files!! Always came back with 0 files found)

Not sure the date format used by Windows FTP server - One thing I am sure of: tasks that once worked stopped working on Friday - it took all weekend and most of today to figure it out. By updating files and folders, magically ftp task begins working agains and I slowly begin regain my sanity

Here's the exception:
D:\builds\build.xml:23: java.lang.NullPointerException
at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:115)
at org.apache.tools.ant.Task.perform(Task.java:348)
at org.apache.tools.ant.Target.execute(Target.java:357)
at org.apache.tools.ant.Target.performTasks(Target.java:385)
at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1329)
at org.apache.tools.ant.Project.executeTarget(Project.java:1298)
at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41)
at org.apache.tools.ant.Project.executeTargets(Project.java:1181)
at org.apache.tools.ant.Main.runBuild(Main.java:698)
at org.apache.tools.ant.Main.startAnt(Main.java:199)
at org.apache.tools.ant.launch.Launcher.run(Launcher.java:257)
at org.apache.tools.ant.launch.Launcher.main(Launcher.java:104)
Caused by: java.lang.NullPointerException
at org.apache.tools.ant.taskdefs.optional.net.FTP$FTPDirectoryScanner.scandir(FTP.java:374)
at org.apache.tools.ant.taskdefs.optional.net.FTP$FTPDirectoryScanner.accountForIncludedDir(FTP.java:459)
at org.apache.tools.ant.taskdefs.optional.net.FTP$FTPDirectoryScanner.scandir(FTP.java:383)
at org.apache.tools.ant.taskdefs.optional.net.FTP$FTPDirectoryScanner.checkIncludePatterns(FTP.java:270)
at org.apache.tools.ant.taskdefs.optional.net.FTP$FTPDirectoryScanner.scan(FTP.java:233)
at org.apache.tools.ant.taskdefs.optional.net.FTP.transferFiles(FTP.java:1570)
at org.apache.tools.ant.taskdefs.optional.net.FTP.transferFiles(FTP.java:1683)
at org.apache.tools.ant.taskdefs.optional.net.FTP.execute(FTP.java:2373)
at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:288)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:105)
... 11 more
— Nested Exception —
java.lang.NullPointerException
at org.apache.tools.ant.taskdefs.optional.net.FTP$FTPDirectoryScanner.scandir(FTP.java:374)
at org.apache.tools.ant.taskdefs.optional.net.FTP$FTPDirectoryScanner.accountForIncludedDir(FTP.java:459)
at org.apache.tools.ant.taskdefs.optional.net.FTP$FTPDirectoryScanner.scandir(FTP.java:383)
at org.apache.tools.ant.taskdefs.optional.net.FTP$FTPDirectoryScanner.checkIncludePatterns(FTP.java:270)
at org.apache.tools.ant.taskdefs.optional.net.FTP$FTPDirectoryScanner.scan(FTP.java:233)
at org.apache.tools.ant.taskdefs.optional.net.FTP.transferFiles(FTP.java:1570)
at org.apache.tools.ant.taskdefs.optional.net.FTP.transferFiles(FTP.java:1683)
at org.apache.tools.ant.taskdefs.optional.net.FTP.execute(FTP.java:2373)
at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:288)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:105)
at org.apache.tools.ant.Task.perform(Task.java:348)
at org.apache.tools.ant.Target.execute(Target.java:357)
at org.apache.tools.ant.Target.performTasks(Target.java:385)
at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1329)
at org.apache.tools.ant.Project.executeTarget(Project.java:1298)
at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41)
at org.apache.tools.ant.Project.executeTargets(Project.java:1181)
at org.apache.tools.ant.Main.runBuild(Main.java:698)
at org.apache.tools.ant.Main.startAnt(Main.java:199)
at org.apache.tools.ant.launch.Launcher.run(Launcher.java:257)
at org.apache.tools.ant.launch.Launcher.main(Launcher.java:104)

Issue Links

• duplicates: NET-188 FTPClient#listFiles returns null element when file's timestamp is "02/29"