mod_rewrite problem: $1 and $2 not substituted into target url

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Good morning Apache list,

I have a strange mod_rewrite problem, and I'm not sure how to solve it. I
have a RewriteRule that works correctly on one apache daemon, but doesn't
work when copied and pasted to the httpd.conf file of a second apache
daemon.

To state this differently, on the second apache daemon, mod_rewrite is
correctly matching the URL based on the regex, but it is not substituting
the back-references into the target URL.

The rule looks like this:

RewriteRule /products/(.*)/(.*)\.html$ /perl/
detail.pl?url_name=$1&model_nbr=$2

On the first server this successfully matches this request:

http://www.mydomain.com/products/whirlpool/1234567.html, and does an
internal redirect to /perl/detail.pl?url_name=whirlpool&model_nbr=1234567

On the 2nd (malfunctioning) server, it doesn't work -- although mod_rewrite
correctly matches the request to the rule, it doesn't substitute the values
inside the parentheses to $1 and $2 in the output URL. Here's what gets
written to the output of the RewriteLog on the 2nd server:

192.168.1.3 - - [26/Jan/2010:10:17:06 -0600] [
www.mydomain.com/sid#9094fec][rid#90a8b3c/initial]
(2) init rewrite engine with requested uri /products/whirlpool/1234567.html
192.168.1.3 - - [26/Jan/2010:10:17:06 -0600] [
www.mydomain.com/sid#9094fec][rid#90a8b3c/initial]
(3) applying pattern '/products/(.*)/(.*)\.html$' to uri
'/products/whirlpool/1234567.html'
192.168.1.3 - - [26/Jan/2010:10:17:06 -0600] [
www.mydomain.com/sid#9094fec][rid#90a8b3c/initial]
(2) *rewrite /products/whirlpool/1234567.**html -> /perl/
detail.pl?url_name=&model_nbr=*
192.168.1.3 - - [26/Jan/2010:10:17:06 -0600] [
www.mydomain.com/sid#9094fec][rid#90a8b3c/initial]
(3) *split uri=/perl/detail.pl?url_name=&model_nbr= -> uri=/perl/detail.pl,
args=url_name=&model_nbr=*
192.168.1.3 - - [26/Jan/2010:10:17:06 -0600] [
www.mydomain.com/sid#9094fec][rid#90a8b3c/initial]
(2) local path result: /perl/detail.pl
192.168.1.3 - - [26/Jan/2010:10:17:06 -0600] [
www.mydomain.com/sid#9094fec][rid#90a8b3c/initial]
(2) prefixed with document_root to /www/perl/mydomain/htdocs/perl/detail.pl
192.168.1.3 - - [26/Jan/2010:10:17:06 -0600] [
www.mydomain.com/sid#9094fec][rid#90a8b3c/initial]
(1) go-ahead with /www/perl/mydomain/htdocs/perl/detail.pl [OK]

Note the bolded sections of the log -- the values stored in $1 and $2 are
not substituted into the final URL. On the first server, these do get
substituted AND they get written to the rewrite_log.

Here's the relevant section of the httpd.conf file for the malfunctioning
Apache daemon:

RewriteEngine On

RewriteLog /var/log/apache-perl/rewrite_log.log
RewriteLogLevel 3

RewriteRule /products/(.*)/(.*)\.html$ /perl/
detail.pl?url_name=$1&model_nbr=$2

I thought it was possible that there were conflicts with other rules, so I
removed all the other RewriteRules and made sure that there were no
..htaccess files that applied to this request. I also tried hard-coding the
url_name param to "whirlpool", on the theory that mod_rewrite might be happy
with 1 substitution param, but no dice. In this case it still declined to
substitute "1234567" for $1. This httpd.conf file has no other virtual
hosts which might be causing a conflict.

Any suggestions as to what might be going on?

Thanks,
Chris

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Good morning Apache list,

I have a strange mod_rewrite problem, and =
I'm not sure how to solve it.=A0 I have a RewriteRule that works correc=
tly on one apache daemon, but doesn't work when copied and pasted to th=
e httpd.conf file of a second apache daemon.=A0






To state this differently, on the second apache daemon, mod_rewrite is =
correctly matching the URL based on the regex, but it is not substituting t=
he back-references into the target URL.

The rule looks like this: r>




RewriteRule /products/(.*)/(.*)\.html$ /perl/ l?url_name=3D$1&model_nbr=3D$2" target=3D"_blank">detail.pl?url_name=3D=
$1&model_nbr=3D$2



On the first server this successfully matches this request:

ref=3D"http://www.mydomain.com/products/whirlpool/1234567.ht ml" target=3D"_=
blank">http://www.mydomain.com/products/whirlpool/1234567.ht ml, and doe=
s an internal redirect to /perl/ lpool&model_nbr=3D1234567" target=3D"_blank">detail.pl?url_name=3Dwhirl=
pool&model_nbr=3D1234567








On the 2nd (malfunctioning) server, it doesn't work -- although mod=
_rewrite correctly matches the request to the rule, it doesn't substitu=
te the values inside the parentheses to $1 and $2 in the output URL.=A0 Her=
e's what gets written to the output of the RewriteLog on the 2nd server=
:






192.168.1.3 - - [26/Jan/2010:10:17:06 -0600] [ omain.com/sid#9094fec][rid%2390a8b3c/initial" target=3D"_blank">www.mydomai=
n.com/sid#9094fec][rid#90a8b3c/initial] (2) init rewrite engine with re=
quested uri /products/whirlpool/1234567.html







192.168.1.3 - - [26/Jan/2010:10:17:06 -0600] [ n.com/sid#9094fec][rid%2390a8b3c/initial" target=3D"_blank">www.mydomain.co=
m/sid#9094fec][rid#90a8b3c/initial] (3) applying pattern '/products=
/(.*)/(.*)\.html$' to uri '/products/whirlpool/1234567.html' >






192.168.1.3 - - [26/Jan/2010:10:17:06 -0600] [ n.com/sid#9094fec][rid%2390a8b3c/initial" target=3D"_blank">www.mydomain.co=
m/sid#9094fec][rid#90a8b3c/initial] (2) rewrite /products/whirlpool/=
1234567.html -> /perl/ ;model_nbr=3D" target=3D"_blank">detail.pl?url_name=3D&model_nbr=3D=








192.168.1.3 - - [26/Jan/2010:10:17:06 -0600] [ n.com/sid#9094fec][rid%2390a8b3c/initial" target=3D"_blank">www.mydomain.co=
m/sid#9094fec][rid#90a8b3c/initial] (3) split uri=3D/perl/ "http://detail.pl?url_name=3D&model_nbr=3D" target=3D"_blank">detail.pl=
?url_name=3D&model_nbr=3D -> uri=3D/perl/ l.pl" target=3D"_blank">detail.pl, args=3Durl_name=3D&model_nbr=3D<=
/b>







192.168.1.3 - - [26/Jan/2010:10:17:06 -0600] [ n.com/sid#9094fec][rid%2390a8b3c/initial" target=3D"_blank">www.mydomain.co=
m/sid#9094fec][rid#90a8b3c/initial] (2) local path result: /perl/ f=3D"http://detail.pl" target=3D"_blank">detail.pl







192.168.1.3 - - [26/Jan/2010:10:17:06 -0600] [ n.com/sid#9094fec][rid%2390a8b3c/initial" target=3D"_blank">www.mydomain.co=
m/sid#9094fec][rid#90a8b3c/initial] (2) prefixed with document_root to =
/www/perl/mydomain/htdocs/perl/ k">detail.pl







192.168.1.3 - - [26/Jan/2010:10:17:06 -0600] [ n.com/sid#9094fec][rid%2390a8b3c/initial" target=3D"_blank">www.mydomain.co=
m/sid#9094fec][rid#90a8b3c/initial] (1) go-ahead with /www/perl/mydomai=
n/htdocs/perl/ =
[OK]








Note the bolded sections of the log -- the values stored in $1 and $2 a=
re not substituted into the final URL.=A0 On the first server, these do get=
substituted AND they get written to the rewrite_log.

Here's the=
relevant section of the httpd.conf file for the malfunctioning Apache daem=
on:








RewriteEngine On

RewriteLog /var/log/apache-perl/rewrite_log.log=

RewriteLogLevel 3

RewriteRule /products/(.*)/(.*)\.html$=20
/perl/ =3D"_blank">detail.pl?url_name=3D$1&model_nbr=3D$2

I thought=
it was possible that there were conflicts with other rules, so I removed a=
ll the other RewriteRules and made sure that there were no .htaccess files =
that applied to this request.=A0 I also tried hard-coding the url_name para=
m to "whirlpool", on the theory that mod_rewrite might be happy w=
ith 1 substitution param, but no dice.=A0 In this case it still declined to=
substitute "1234567" for $1.=A0 This httpd.conf file has no othe=
r virtual hosts which might be causing a conflict.







Any suggestions as to what might be going on?

Thanks,
Chris r>

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