8000 Don't cook hex escapes by theseion · Pull Request #2215 · coreruleset/coreruleset · GitHub
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Don't cook hex escapes #2215

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Merged
merged 2 commits into from
Oct 24, 2021
Merged

Don't cook hex escapes #2215

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f25498d
Added coreruleset/Regexp-Assemble fork as submodule
theseion Sep 29, 2021
0b2743d
Use Regexp::Assemble from the submodule
theseion Sep 29, 2021
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5 changes: 5 additions & 0 deletions .gitmodules
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path = docs/OWASP-CRS-Documentation
url = https://github.com/coreruleset/owasp-crs-documentation
branch = master
[submodule "util/regexp-assemble/lib"]
path = util/regexp-assemble/lib
url = git@github.com:coreruleset/Regexp-Assemble.git
branch = master
depth = 1
25 changes: 25 additions & 0 deletions util/regexp-assemble/README.md
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# How to use regexp-assemble.pl

## Set up
1. You will need a Perl environment and Perl version >= 5.10
2. Initialize the Git submodule with the Regexp::Assemble Perl module by running:
```bash
git submodule update --init util/regexp-assemble/lib
```
3. You should now be able to use the script. Try running something like the following:
```bash
printf "(?:homer)? simpson\n(?:lisa)? simpson" | util/regexp-assemble/regexp-assemble.pl
```
You should see:
```bash
(?:(?:homer)?|(?:lisa)?) simpson
```

## Example use
To generate a reduced expression from a list of expressions, simply pass the name of a data file to the script of pipe the contents to it:
```bash
util/regexp-assemble/regexp-assemble.pl util/regexp-assemble/regexp-942170.data
# or
cat util/regexp-assemble/regexp-942170.data util/ | regexp-assemble/regexp-assemble.pl
```

# Data file format
The data files (`.data` suffix) contain one regular expression per line. The contents of these files can be piped to [regexp-assemble.py](regexp-assemble.py) directly.

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1 change: 1 addition & 0 deletions util/regexp-assemble/lib
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Submodule lib added at 78d230
7 changes: 6 additions & 1 deletion util/regexp-assemble/regexp-assemble.pl
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#

use strict;
use FindBin qw( $RealBin );

# load Regexp::Assemble from the submodule, not from any other location
use lib "$RealBin/lib/lib";
use Regexp::Assemble;

my $ra = Regexp::Assemble->new;
# cook_hex: disable replacing hex escapes with decodec bytes
my $ra = Regexp::Assemble->new(cook_hex => 0);
my $flags = '';
my $prefix = '';
my $suffix = '';
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0