diff options
| author | root <root@rbsd.ankarstrom.se> | 2021-04-23 18:29:21 +0000 |
|---|---|---|
| committer | root <root@rbsd.ankarstrom.se> | 2021-04-23 18:29:21 +0000 |
| commit | 68373909df410fb1be8c664875e7fa4df2f7e2bc (patch) | |
| tree | 1fb8a565cc7718facb550a5d032fa925b357fecc /lib | |
| parent | 2c8e4634e5a3f739fd1e048039893338de63e828 (diff) | |
| download | Apache-Inject-68373909df410fb1be8c664875e7fa4df2f7e2bc.tar.gz | |
Change directory structure
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Apache/Inject.pm | 58 | ||||
| -rw-r--r-- | lib/Apache/Inject/Handler.pm | 82 |
2 files changed, 140 insertions, 0 deletions
diff --git a/lib/Apache/Inject.pm b/lib/Apache/Inject.pm new file mode 100644 index 0000000..a9f1a61 --- /dev/null +++ b/lib/Apache/Inject.pm @@ -0,0 +1,58 @@ +package Apache::Inject; + +use strict; +use warnings; + +use Apache2::CmdParms (); +use Apache2::Module (); +use Apache2::Const qw/OR_LIMIT OR_AUTHCFG TAKE12/; + +my @directives = ( + { name => 'Inject', + func => __PACKAGE__.'::Inject', + req_override => OR_LIMIT|OR_AUTHCFG, + args_how => TAKE12, + errmsg => 'Inject HeadFile[!] FootFile[!]' } +); +Apache2::Module::add(__PACKAGE__, \@directives); + +sub Inject { + my ($self, $parms, @args) = @_; + + # Validate arguments and construct corresponding directives + my @vars; + my @names = qw/InjectHead InjectFoot/; + for (@args) { + die 'Arguments to Inject directive cannot contain quotes' if /"/; + push @vars, 'PerlSetVar ' . (shift @names) . ' ' . $_; + } + + # Add relevant directives to current configuration + $parms->add_config(['SetHandler perl-script', + 'PerlResponseHandler Apache::Inject::Handler', + @vars]); +} + +1; +__END__ + +=head1 NAME + +Apache::Inject - Apache directive for injecting HTML headers and footers + +=head1 SYNOPSIS + +DocumentRoot /uar/local/www/apache24/data +PerlModule Apache::Inject +<Directory /usr/local/www/apache24/data> + Inject head.html foot.html +</Directory> + +=head1 DESCRIPTION + +Apache::Inject is a mod_perl module that adds the Inject directive. +It injects a header before the body and (optionally) a footer after the body +of any requested HTML file. + +=cut + diff --git a/lib/Apache/Inject/Handler.pm b/lib/Apache/Inject/Handler.pm new file mode 100644 index 0000000..5a40fd8 --- /dev/null +++ b/lib/Apache/Inject/Handler.pm @@ -0,0 +1,82 @@ +package Apache::Inject::Handler; + +use strict; +use warnings FATAL => 'all'; + +use Apache2::RequestRec (); +use Apache2::RequestUtil (); +use Apache2::Const qw/OK DECLINED/; + +my $doc = qr{ + \A + (?<head> \s* + (<!doctype[^>]*>)? \s* + (<html[^>]*>)? \s* + ( <head[^>]*>.*?</head> \s* + | ( <title[^>]*>.*?</title> \s* + | <base[^>]*> \s* + | <meta[^>]*> \s* + | <link[^>]*> \s* + | <style[^>]*>.*?</style> \s* # n.b. + | <script[^>]*>.*?</script> \s* # n.b. + )+ + )? + (<body[^>]*>)? + )? + (?<body> .*? ) + (?<rest> </html> \s* )? + \z +}xmsi; + +sub inject { + my ($r, $var) = @_; + + # Retrieve value implicitly set by Inject directive + return if not (my $val = $r->dir_config($var)); + + # Validate path + if ($val =~ m{^/}) { + warn "$var should not begin with slash, " + . "as it is already always relative to document root"; + } + if ($val =~ m{^../|/../|/..$}) { + warn "$var cannot extend past document root"; + return; + } + + # note: document root has been confirmed not to be empty + my $root = $r->document_root; + + # Read contents of specified file + open my $fh, '<', "$root/$val" or do { + warn "$var $root/$val does not exist"; + return; + }; + print for <$fh>; + close $fh; +} + +sub handler { + my $r = shift; + + return DECLINED if not $r->content_type eq 'text/html'; + + my $content = ${$r->slurp_filename}; + return DECLINED if not $content =~ /$doc/; + + # Or is DocumentRoot guaranteed not to be empty? + if (not $r->document_root) { + warn 'Declining request due to empty document root'; + return DECLINED; + } + + print $+{head} if $+{head}; + inject($r, "InjectHead"); + print $+{body} if $+{body}; + inject($r, "InjectFoot"); + print $+{rest} if $+{rest}; + + return OK; +} + +1; |