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• RewriteRule not working at server level?

  - by Alexis Wilke

  I wanted to forbid some robots from doing certain things to my websites and decided to add a RewriteRule for that purpose. The rule works when put in one of my <VirtualHost *:80> tag and looks like this: RewriteEngine On RewriteCond %{HTTP_USER_AGENT} libwww-perl RewriteCond %{REQUEST_METHOD} POST RewriteRule . - [F,L] However, I wanted to apply that to all my websites instead of just one of them. So with the newest version of Apache2 settings, I decided to put that code in the security.conf file. This file is defined under /etc/apache2/conf-available/... (and yes, I have a softlink from the /etc/apache2/conf-enabled/... directory.) However, if the definition is only in the conf-available/security.conf files, it somehow gets ignored. From the documentation, it says that these Rewrite* commands all work at server level! Any idea of what I would be missing?

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• La FAQ Perl/Tk, 80 réponses à vos questions dont 13 mises à jour, avec un moteur de recherche intégré

  Salut,Comme on peut le constater, Perl manque malheureusement de cours sur le net en rapport avec la création d'interfaces graphique via Tk. Il existe néanmoins quelques cours sur developpez.com dans la partie coursNoter qu'il est vraiment possible de créer très facilement de très bonnes interfaces graphiques en Perl, et je souhaite d'ailleurs créer une FAQ pour l'occasion, mais je voudrais d'abord connaitre l'avis des Perlistes du forum.Maintenant que la FAQ Perl/Tk est présente, n'hésitez pas à faire des suggestions de questions que vous souhaitez voir pouvant aider les perléens.Vous pouvez tous participer à son évolution.Merci...

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• Perl fête ses 25 ans, que pensez-vous de l'évolution du langage de programmation ?

  Perl fête ses 25 ans que pensez-vous de l'évolution du langage ? Perl (Practical Extraction and Report Language) a un quart de siècle cette semaine. Le langage de programmation dérivé des langages de scripts shell, sed, awk et du langage C avait été lancé en version 1.0 le 18 décembre 1987 par Larry Wall. Le langage avait été présenté comme une alternative aux utilitaires de traitement de texte Unix Sed et Awk. C'est un an plus tard après la sortie de la version 2.0 que Perl va réellement décoller. En 2000, Perl sort en version 6 et est entièrement réécrit à partir de zéro, tout en concevant ses principes de base. Le langage interprété est surtout apprécié...

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• Running CGI With Perl under Apache Permission Problem

  - by neversaint

  I have the following entry under apache2.conf in my Debian box. AddHandler cgi-script .cgi .pl Options +ExecCGI ScriptAlias /cgi-bin/ /var/www/mychosendir/cgi-bin/ <Directory /var/www/mychosendir/cgi-bin> Options +ExecCGI -Indexes allow from all </Directory> Then I have a perl cgi script stored under these directories and permissions: nvs@somename:/var/www/mychosendir$ ls -lhR .: total 12K drwxr-xr-x 2 nvs nvs 4.0K 2010-04-21 13:42 cgi-bin ./cgi-bin: total 4.0K -rwxr-xr-x 1 nvs nvs 90 2010-04-21 13:40 test.cgi However when I tried to access it in the web browser: http://myhost.com/mychosendir/cgi-bin/test.cgi They gave me this error: [Wed Apr 21 15:26:09 2010] [error] [client 150.82.219.158] (8)Exec format error: exec of '/var/www/mychosendir/cgi-bin/test.cgi' failed [Wed Apr 21 15:26:09 2010] [error] [client 150.82.219.158] Premature end of script headers: test.cgi What's wrong with it? Update: I also have the following entry in my apache2.conf: <Files ~ "^\.ht"> Order allow,deny Deny from all </Files> And the content of test.cgi is this: #!/usr/bin/perl -wT print "Content-type: text/html\n\n"; print "Hello, world!\n";

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• Running CGI With Perl under Apache Permission Problem

  - by neversaint

  I have the following entry under apache2.conf in my Debian box. AddHandler cgi-script .cgi .pl Options +ExecCGI ScriptAlias /mychosendir/cgi-bin/ /var/www/mychosendir/cgi-bin/ <Directory /var/www/mychosendir/cgi-bin> Options +ExecCGI -Indexes allow from all </Directory> Then I have a perl cgi script stored under these directories and permissions: nvs@somename:/var/www/mychosendir$ ls -lhR .: total 12K drwxr-xr-x 2 nvs nvs 4.0K 2010-04-21 13:42 cgi-bin ./cgi-bin: total 4.0K -rwxr-xr-x 1 nvs nvs 90 2010-04-21 13:40 test.cgi However when I tried to access it in the web browser: http://myhost.com/mychosendir/cgi-bin/test.cgi They gave me this error: [Wed Apr 21 15:26:09 2010] [error] [client 150.82.219.158] (8)Exec format error: exec of '/var/www/mychosendir/cgi-bin/test.cgi' failed [Wed Apr 21 15:26:09 2010] [error] [client 150.82.219.158] Premature end of script headers: test.cgi What's wrong with it? Update: I also have the following entry in my apache2.conf: <Files ~ "^\.ht"> Order allow,deny Deny from all </Files> And the content of test.cgi is this: #!/usr/bin/perl -wT print "Content-type: text/html\n\n"; print "Hello, world!\n";

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• How do I increase the buffer size for domain sockets in OS X 10.6

  - by Chas. Owens

  In Linux I have no problem dumping tons of data into a domain socket, but the same code on OS X 10.6.2 blows up after about 65 records. The socket reader code looks like #!/usr/bin/perl use strict; use warnings; use IO::Socket; unlink "foo"; my $sock = IO::Socket::UNIX->new ( Local => 'foo', Type => SOCK_DGRAM, Timeout => 600, ) or die "Could not create socket: $!\n"; while (<$sock>) { chomp; print "[$_]\n"; } And the client code looks like #!/usr/bin/perl use strict; use warnings; use IO::Socket; my $sock = IO::Socket::UNIX->new ( Peer => 'foo', Type => SOCK_DGRAM, Timeout => 600, ) or die "Could not create socket: $!\n"; for my $i (1 .. 1_000_000) { print $sock "$i\n" or die $!; } close $sock; The error message I get is No buffer space available at write.pl line 15.. It seems fairly obvious that there is a difference in the buffer size between Linux and OS X, but I don't know how to set it OS X (or what the possible negative side effects might be).

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• Estimating compressed file size using a list parameter

  - by Sai

  I am currently compressing a list of files from a directory in the following format: tar -cvjf test_1.tar.gz -T test_1.lst --no-recursion The above command will compress only those files mentioned in the list. I am doing this because this list is generated such that it fits a DVD. However, during compression the compression rate decreases the estimated file size and there is abundant space left in the DVD. This is something like a Knapsack algorithm. I would like to estimate the compressed file size and add some more files to the list. I found that it is possible to estimate file size using the following command: tar -cjf - Folder/ | wc -c This command does not take a list parameter. Is there a way to estimate compressed file size? I am also looking into options like perl scripts etc. Edit: I think I should provide more information since I have been doing a lot of web search. I came across a perl script(Link)that sort of emulates the Knapsack algorithm. The current problem with the above mentioned script is that it splits the files in their original state. When I compress the files after splitting them, there are opportunities for adding more files which I consider to be inefficient. There are 2 ways I could resolve the inefficiency: a) Compress individual files and save them in a directory using a script. The compressed file could provide a best estimate. I could generate a script using a folder of compressed files and use them on the uncompressed ones. b) Check whether the compressed file's size is less than the required size. If so, I should keep adding files until I meet the requirement. However, the addition of new files to the compressed file is an optimization problem by itself.

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• How do I increase the buffer size for domain sockets in OS X 10.6

  - by Chas. Owens

  In Linux I have no problem dumping tons of data into a domain socket, but the same code on OS X 10.6.2 blows up after about 65 records. The socket reader code looks like #!/usr/bin/perl use strict; use warnings; use IO::Socket; unlink "foo"; my $sock = IO::Socket::UNIX->new ( Local => 'foo', Type => SOCK_DGRAM, Timeout => 600, ) or die "Could not create socket: $!\n"; while (<$sock>) { chomp; print "[$_]\n"; } And the client code looks like #!/usr/bin/perl use strict; use warnings; use IO::Socket; my $sock = IO::Socket::UNIX->new ( Peer => 'foo', Type => SOCK_DGRAM, Timeout => 600, ) or die "Could not create socket: $!\n"; for my $i (1 .. 1_000_000) { print $sock "$i\n" or die $!; } close $sock; The error message I get is No buffer space available at write.pl line 15.. It seems fairly obvious that there is a difference in the buffer size between Linux and OS X, but I don't know how to set it OS X (or what the possible negative side effects might be).

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• What may be wrong with String::ToIdentifier::EN tests?

  - by wk01

  I try to install Perl module String::ToIdentifier::EN (as depndency of DBIx::Class::Schema::Loader) but it fails on tests. I googled those errors but get no picture, where is problem: Building and testing String-ToIdentifier-EN-0.07 cp lib/String/ToIdentifier/EN.pm blib/lib/String/ToIdentifier/EN.pm cp lib/String/ToIdentifier/EN/Unicode.pm blib/lib/String/ToIdentifier/EN/Unicode.pm Manifying blib/man3/String::ToIdentifier::EN.3pm Manifying blib/man3/String::ToIdentifier::EN::Unicode.3pm PERL_DL_NONLAZY=1 /usr/bin/perl "-MExtUtils::Command::MM" "-e" "test_harness(0, 'inc', 'blib/lib', 'blib/arch')" t/00_basic.t t/10_ascii.t t/20_capitalization.t Byte order is not compatible at ../../lib/Storable.pm (autosplit into ../../lib/auto/Storable/_retrieve.al) line 380, at /home/wanradt/perl5/lib/perl5/Lingua/EN/Tagger.pm line 167 # Looks like you planned 25 tests but ran 4. # Looks like your test exited with 25 just after 4. t/00_basic.t ........... Dubious, test returned 25 (wstat 6400, 0x1900) Failed 21/25 subtests Byte order is not compatible at ../../lib/Storable.pm (autosplit into ../../lib/auto/Storable/_retrieve.al) line 380, at /home/wanradt/perl5/lib/perl5/Lingua/EN/Tagger.pm line 167 # Looks like you planned 768 tests but ran 512. # Looks like your test exited with 25 just after 512. t/10_ascii.t ........... Dubious, test returned 25 (wstat 6400, 0x1900) Failed 256/768 subtests t/20_capitalization.t .. ok Test Summary Report ------------------- t/00_basic.t (Wstat: 6400 Tests: 4 Failed: 0) Non-zero exit status: 25 Parse errors: Bad plan. You planned 25 tests but ran 4. t/10_ascii.t (Wstat: 6400 Tests: 512 Failed: 0) Non-zero exit status: 25 Parse errors: Bad plan. You planned 768 tests but ran 512. Files=3, Tests=528, 1 wallclock secs ( 0.07 usr 0.02 sys + 0.42 cusr 0.04 csys = 0.55 CPU) Result: FAIL Failed 2/3 test programs. 0/528 subtests failed. make: *** [test_dynamic] Error 255 -> FAIL Installing String::ToIdentifier::EN failed. See /home/wanradt/.cpanm/build.log for details. Byte order is not compatible at... seems a key, but to where?

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• grep with negative lookbehind

  - by Dan Fabulich

  I'm trying to grep through a bunch of files in nested subdirectories to look for regular expression matches; my regex requires negative lookbehind. Perl has negative lookbehind, but as far as I can tell GNU grep doesn't support negative lookbehinds. What's the easiest way to get an equivalent to GNU grep that supports negative lookbehinds? (I guess I could write my own mini-grep in Perl, but that doesn't seem like it should be necessary. My copy of the Perl Cookbook includes source for tcgrep; is that what I should use? If so, where's the latest version? Don't tell me I have to type this entire program!)

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• PHP to C/C++ through CGI script

  - by Peterim

  Hi guys! I realize it's probably something strange, but here is what I have. I have an application (handwriting recognition engine) written in C/C++. This application has Perl wrapper which was made by application's authors using SWIG. My website is written in PHP, so I'm looking for some ways to make PHP work with C/C++ application. The only way I can think of now is to create a CGI script (perl script) which accepts POST request from my website (AJAX request), sends it to the recognition engine through it's Perl wrapper, gets the required data and returns the required data as a response to AJAX request. Do you think it could be done this way? Are there any better solutions? Thank you!

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• Is "map" a loop?

  - by DVK

  While answering this question, I came to realize that I was not sure whether Perl's map can be considered a loop or not? On one hand, it quacks/walks like a loop (does O(n) work, can be easily re-written by an equivalent loop, and sort of fits the common definition = "a sequence of instructions that is continually repeated"). On the other hand, map is not usually listed among Perl's control structures, of which loops are a subset of. E.g. http://en.wikipedia.org/wiki/Perl_control_structures#Loops So, what i'm looking for is a formal reason to be convinced of one side vs. the other. So far, the former (it is a loop) sounds a lot more convincing to me, but I'm bothered by the fact that I never saw "map" mentioned in a list of Perl loops.

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• Is there any use for Bash scripting anymore?

  - by Precision

  I just finished my second year as a university CS student, so my "real-world" knowledge is lacking. I learned Java my first year, continued with Java and picked up C and simple Bash scripting my second. This summer I'm trying to learn Perl (God help me). I've dabbled with Python a bit in the past. My question is, now that we have very readable, very writable scripting languages like Python, Ruby, Perl, etc, why does anyone write Bash scripts? Is there something I'm missing? I know my linux box has perl and python. Are they not ubiquitous enough? Is there really something that's easier to do in Bash than in some other hll?

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• Mod Rewrite Hide Folder

  - by MILESMIBALERR

  I think this is a pretty simple question. How do you an apache rewrite to hide a folder. EX: www.website.com/pages/login.php to www.website.com/login.php or www.website.com/pages/home.php to www.website.com/home.php The folder needs to alway be hidden. thanks

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• Access to Apache::DBI from DBI

  - by hpavc

  Is it possible to access a Apache::DBI database handle from a perl script (that isn't running under mod_perl). What I am looking for is database pooling for my perl scripts, I have a fair number of database sources (oracle/mysql) and a growing number of scripts. Some ideas like SQLRelay, using Oracle10XE with database links and pooling, and or convert all scripts to SOAP calls, etc are becoming more and more viable. But if there was a mechanism for reusing Apache::DBI I could fight this a bit. I have no non-perl requirements, so we don't have a php/jdbc implementation or similar to deal with. Thanks

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• Weird Objective-C Mod Behavior

  - by coneybeare

  So I thought that negative numbers, when mod'ed should be put into positive space... I cant get this to happen in objective-c I expect this: -1 % 3 = 2 0 % 3 = 0 1 % 3 = 1 2 % 3 = 2 But get this -1 % 3 = -1 0 % 3 = 0 1 % 3 = 1 2 % 3 = 2 Why is this and is there a workaround?

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• Diffie-Hellman -- Primitive root mod n -- cryptography question.

  - by somewhat confused

  In the below snippet, please explain starting with the first "for" loop what is happening and why. Why is 0 added, why is 1 added in the second loop. What is going on in the "if" statement under bigi. Finally explain the modPow method. Thank you in advance for meaningful replies. public static boolean isPrimitive(BigInteger m, BigInteger n) { BigInteger bigi, vectorint; Vector<BigInteger> v = new Vector<BigInteger>(m.intValue()); int i; for (i=0;i<m.intValue();i++) v.add(new BigInteger("0")); for (i=1;i<m.intValue();i++) { bigi = new BigInteger("" + i); if (m.gcd(bigi).intValue() == 1) v.setElementAt(new BigInteger("1"), n.modPow(bigi,m).intValue()); } for (i=0;i<m.intValue();i++) { bigi = new BigInteger("" + i); if (m.gcd(bigi).intValue() == 1) { vectorint = v.elementAt(bigi.intValue()); if ( vectorint.intValue() == 0) i = m.intValue() + 1; } } if (i == m.intValue() + 2) return false; else return true; }

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• Can I use Catalyst to display images or graphs?

  - by Octopus

  I have simple Perl/CGI scripts based web server which is mainly used to display graphs and images. I am looking to make it more technical and come to know about Catalyst. I have installed all the required Perl modules on my test platform and created an application called myweb. Also, I am going through the Catalyst documents to reach my goal but nothing helpful yet. Is Catalyst helpful to display images/graphs on web? How can I use my existing CGI/Perl scritps with Catalyst? Any example would be really appreciated.

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• Print array variables when using or not using double quotes.

  - by Nano HE

  Hi, When I learning to print array variables, I found the white space inserted when double quoter used. Snippet code as below. Could you please tell me why? #!/usr/bin/perl -w use strict; use warnings; my @str_array = ("Perl","array","tutorial"); my @int_array = (5,7,9,10); print @str_array; print "\n"; # added the double quotes print "@str_array"; print "\n"; print @int_array; print "\n"; # added the double quotes print "@int_array"; Output: Perlarraytutorial Perl array tutorial 57910 5 7 9 10

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• ldapsearch and vcard creation

  - by Aaron Hoffman

  I'm using openldap on Mac OS X Server 10.6 and need to generate a vcard for all the users in a given group. By using the ldapsearch I can list all the memberUid's for all users in that group. I found a perl script (Advanced LDAP Search or ALS) that was written by someone that will generate the vcard easily. ALS can be found here http://www.ldapman.org/tools/als.gz So what I need to do is create a wrapper script (in python or perl) that will effectively loop through the memberUid's and run the ALS command to create the vcard and append it to the file. This command provides the memberUid's: ldapsearch -x -b 'dc=ldap,dc=server,dc=com' '(cn=testgroup)' Then running ALS gives the vcard: als -b dc=ldap,dc=server,dc=com -V uid=aaronh > vcardlist.vcf If it's easier to do this using Perl since ALS is already using it that would be fine. I've done more work in python but I'm open to suggestions. Thanks in advance, Aaron

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• Apache mod-vhost-alias question

  - by Kyle

  Hello! I was wondering if you could use a wildcard in the VirtualDocumentRoot directive. I mean is it possible to scan multiple directories with the VirtualDocumentRoot, like multiple home directories to look for sites?

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• Mod redirct error.

  - by user150253

  when I used the SSL fot my website i got following error. in error log. and site shows me default page instead of actual page. I got following error. .htaccess: RewriteEngine not allowed here

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• Why isn't DBIx::Class::Schema::Loader creating my classes?

  - by Robert Wohlfarth

  I am trying to generate static schemas using DBIx::Class in Perl. The command shown below outputs a Schema.pm and no other files. Any idea what I'm doing wrong, or how to to debug this? U:\wohlfarj\Software\PARS>perl -MDBIx::Class::Schema::Loader=make_schema_at,dump_to_dir:.\lib -e "make_schema_at('PARS::Schema',{debug=>1},['dbi:ODBC:PARS','user','password',{AutoCommit=>0}])" Dumping manual schema for PARS::Schema to directory .\lib ... Schema dump completed. I'm using Strawberry Perl on Windows XP. The database is SQL Server 2000, accessed through an ODBC connection. I can successfully run queries using plain old DBI with the same ODBC connection.

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• PHP - Large Interger mod calculation

  - by Kami

  I need to calculate modulus with large number like : <?php $largenum = 95635000009453274121700; echo $largenum % 97; ?> It's not working... beacause $largenum is too big for an int in PHP. Any idea how to do this ?

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• Error: Cannot parse function definition from ' hello()' in Mytest.xs, line 9

  - by Nikole

  Hi I am trying to use perl XS in RHEL 5. but simple programm is giving error.I followed same code as in Example 1 in perldoc perlxstut Can anyone help me in correcting the following error? [root@localhost Mytest]# [root@localhost Mytest]# pwd /home/nikole/perlcode/Mytest [root@localhost Mytest]# ls blib lib MANIFEST Mytest.xs pm_to_blib README Changes Makefile.PL Mytest.c Mytest.xsc ppport.h t [root@localhost Mytest]# perl Makefile.PL Checking if your kit is complete... Looks good Writing Makefile for Mytest [root@localhost Mytest]# [root@localhost Mytest]# [root@localhost Mytest]# make /usr/bin/perl /usr/lib/perl5/5.8.8/ExtUtils/xsubpp -typemap /usr/lib/perl5/5.8.8/ExtUtils/typemap Mytest.xs Mytest.xsc && mv Mytest.xsc Mytest.c Error: Cannot parse function definition from ' hello()' in Mytest.xs, line 9 Please specify prototyping behavior for Mytest.xs (see perlxs manual) make: *** [Mytest.c] Error 1 [root@localhost Mytest]# Thanks

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