ContentDM 3.6 HTTP response parsing bug

Anonymous — Mon, 12 Apr 2004 14:35:08 -0000

I found what appears to be an easy-to-fix bug in
zcontent version 0.7.0. I only have the Linux version of
CONTENTdm server to test on so I'm not sure to what
extent this affects other versions of zcontent and
CONTENTdm.

The problem appears to occur in parsing the HTTP
response from the /cgi-bin/queryget.exe request. Line
570 contains this code:

" chop @responseList; #get rid of the newline
characters."

The problem is that (at least on the Linux version), this
chops even real characters off the response lines.
Thus, later, when the code looks for results by looking
for this line: "", it fails because the
line is chopped to become "<!--start of data--".

Here is a patch that fixes this and returns proper results
for CONTENTdm 3.6:

*** ContentDM.pm 2004-04-08
15:41:35.000000000 -0400
--- ContentDM.pm.orig 2004-04-08
15:41:15.000000000 -0400
***************
*** 567,574 ****
my $appendResults = shift;

my @responseList = split(/\n/,$response);
! # fix by OCLC
! chomp @responseList; #get rid of the
newline characters but don't chop real chars
my $count = 0;
for my $line (@responseList) {
# print "$line\n";
--- 567,573 ----
my $appendResults = shift;

my @responseList = split(/\n/,$response);
! chop @responseList; #get rid of the newline
characters.
my $count = 0;
for my $line (@responseList) {
# print "$line\n"

My Environment Details:

OS: RedHat Linux 9
Perl: 5.8.0 (rpm version perl-5.8.0-88.3)
glibc: 3.2.2 20030222 (Red Hat Linux 3.2.2-5)
kernel: 2.4.20-30.9bigmem #1 SMP Wed Feb 4 20:27:00
EST 2004 i686 i686 i386 GNU/Linux

My Contact information:

Dave Costakos
costakod@oclc.org

Thanks in advance.

Recent changes to bugs

ContentDM 3.6 HTTP response parsing bug