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modsecurity-request-body.t
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modsecurity-request-body.t
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#!/usr/bin/perl
# (C) Andrei Belov
# Tests for ModSecurity-nginx connector (request body operations).
###############################################################################
use warnings;
use strict;
use Test::More;
use Socket qw/ CRLF /;
BEGIN { use FindBin; chdir($FindBin::Bin); }
use lib 'lib';
use Test::Nginx;
###############################################################################
select STDERR; $| = 1;
select STDOUT; $| = 1;
my $t = Test::Nginx->new()->has(qw/http proxy auth_request/);
$t->write_file_expand('nginx.conf', <<'EOF');
%%TEST_GLOBALS%%
daemon off;
events {
}
http {
%%TEST_GLOBALS_HTTP%%
server {
listen 127.0.0.1:8080;
server_name localhost;
modsecurity on;
client_header_buffer_size 1024;
location /bodyaccess {
modsecurity_rules '
SecRuleEngine On
SecRequestBodyAccess On
SecRule REQUEST_BODY "@rx BAD BODY" "id:11,phase:request,deny,log,status:403"
';
proxy_pass http://127.0.0.1:%%PORT_8081%%;
}
location /nobodyaccess {
modsecurity_rules '
SecRuleEngine On
SecRequestBodyAccess Off
SecRule REQUEST_BODY "@rx BAD BODY" "id:21,phase:request,deny,log,status:403"
SecRule ARGS_POST|ARGS_POST_NAMES "@rx BAD ARG" "id:22,phase:request,deny,log,status:403"
';
proxy_pass http://127.0.0.1:%%PORT_8081%%;
}
location /bodylimitreject {
modsecurity_rules '
SecRuleEngine On
SecRequestBodyAccess On
SecRequestBodyLimit 128
SecRequestBodyLimitAction Reject
SecRule REQUEST_BODY "@rx BAD BODY" "id:31,phase:request,deny,log,status:403"
';
proxy_pass http://127.0.0.1:%%PORT_8081%%;
}
location /bodylimitrejectserver {
modsecurity off;
proxy_pass http://127.0.0.1:%%PORT_8082%%;
}
location /bodylimitprocesspartial {
modsecurity_rules '
SecRuleEngine On
SecRequestBodyAccess On
SecRequestBodyLimit 128
SecRequestBodyLimitAction ProcessPartial
SecRule REQUEST_BODY "@rx BAD BODY" "id:41,phase:request,deny,log,status:403"
';
proxy_pass http://127.0.0.1:%%PORT_8081%%;
}
location = /auth {
return 200;
}
location = /useauth {
modsecurity on;
modsecurity_rules '
SecRuleEngine On
SecRequestBodyAccess On
';
auth_request /auth;
proxy_pass http://127.0.0.1:%%PORT_8081%%;
}
}
server {
listen 127.0.0.1:%%PORT_8082%%;
modsecurity on;
modsecurity_rules '
SecRuleEngine On
SecRequestBodyAccess On
SecRequestBodyLimit 128
SecRequestBodyLimitAction Reject
SecRule REQUEST_BODY "@rx BAD BODY" "id:31,phase:request,deny,log,status:403"
';
location / {
proxy_pass http://127.0.0.1:%%PORT_8081%%;
}
}
}
EOF
$t->run_daemon(\&http_daemon);
$t->run()->waitforsocket('127.0.0.1:' . port(8081));
$t->plan(40);
###############################################################################
foreach my $method (('GET', 'POST', 'PUT', 'DELETE')) {
like(http_req_body($method, '/bodyaccess', 'GOOD BODY'), qr/TEST-OK-IF-YOU-SEE-THIS/, "$method request body access on, pass");
like(http_req_body($method, '/bodyaccess', 'VERY BAD BODY'), qr/^HTTP.*403/, "$method request body access on, block");
like(http_req_body($method, '/nobodyaccess', 'VERY BAD BODY'), qr/TEST-OK-IF-YOU-SEE-THIS/, "$method request body access off, pass");
like(http_req_body_postargs($method, '/nobodyaccess', 'BAD ARG'), qr/TEST-OK-IF-YOU-SEE-THIS/, "$method request body access off (ARGS_POST), pass");
like(http_req_body($method, '/bodylimitreject', 'BODY' x 32), qr/TEST-OK-IF-YOU-SEE-THIS/, "$method request body limit reject, pass");
like(http_req_body($method, '/bodylimitreject', 'BODY' x 33), qr/^HTTP.*403/, "$method request body limit reject, block");
like(http_req_body($method, '/bodylimitprocesspartial', 'BODY' x 32 . 'BAD BODY'), qr/TEST-OK-IF-YOU-SEE-THIS/, "$method request body limit process partial, pass");
like(http_req_body($method, '/bodylimitprocesspartial', 'BODY' x 30 . 'BAD BODY' x 32), qr/^HTTP.*403/, "$method request body limit process partial, block");
}
like(http_req_body('POST', '/useauth', 'BODY' x 16), qr/TEST-OK-IF-YOU-SEE-THIS/, "POST with auth_request (request size < client_header_buffer_size)");
like(http_req_body('POST', '/useauth', 'BODY' x 257), qr/TEST-OK-IF-YOU-SEE-THIS/, "POST with auth_request (request size > client_header_buffer_size)");
like(
http(
'POST /useauth HTTP/1.0' . CRLF
. 'Content-Length: 1028' . CRLF . CRLF
. 'BODY' x 256,
sleep => 0.1,
body => 'BODY'
),
qr/TEST-OK-IF-YOU-SEE-THIS/,
'POST with auth_request (request size > client_header_buffer_size), no preread'
);
like(
http(
'POST /useauth HTTP/1.0' . CRLF
. 'Content-Length: 64' . CRLF . CRLF
. 'BODY' x 15,
sleep => 0.1,
body => 'BODY'
),
qr/TEST-OK-IF-YOU-SEE-THIS/,
'POST with auth_request (request size < client_header_buffer_size), no preread'
);
foreach my $method (('GET', 'POST', 'PUT', 'DELETE')) {
like(http_req_body($method, '/bodylimitrejectserver', 'BODY' x 33), qr/^HTTP.*403/, "$method request body limit reject, block (inherited SecRequestBodyLimit)");
}
###############################################################################
sub http_daemon {
my $server = IO::Socket::INET->new(
Proto => 'tcp',
LocalHost => '127.0.0.1:' . port(8081),
Listen => 5,
Reuse => 1
)
or die "Can't create listening socket: $!\n";
local $SIG{PIPE} = 'IGNORE';
while (my $client = $server->accept()) {
$client->autoflush(1);
my $headers = '';
my $uri = '';
while (<$client>) {
$headers .= $_;
last if (/^\x0d?\x0a?$/);
}
$uri = $1 if $headers =~ /^\S+\s+([^ ]+)\s+HTTP/i;
print $client <<'EOF';
HTTP/1.1 200 OK
Connection: close
EOF
print $client "TEST-OK-IF-YOU-SEE-THIS"
unless $headers =~ /^HEAD/i;
close $client;
}
}
sub http_req_body {
my $method = shift;
my $uri = shift;
my $last = pop;
return http( join '', (map {
my $body = $_;
"$method $uri HTTP/1.1" . CRLF
. "Host: localhost" . CRLF
. "Content-Length: " . (length $body) . CRLF . CRLF
. $body
} @_),
"$method $uri HTTP/1.1" . CRLF
. "Host: localhost" . CRLF
. "Connection: close" . CRLF
. "Content-Length: " . (length $last) . CRLF . CRLF
. $last
);
}
sub http_req_body_postargs {
my $method = shift;
my $uri = shift;
my $last = pop;
return http( join '', (map {
my $body = $_;
"$method $uri HTTP/1.1" . CRLF
. "Host: localhost" . CRLF
. "Content-Type: application/x-www-form-urlencoded" . CRLF
. "Content-Length: " . (length "test=" . $body) . CRLF . CRLF
. "test=" . $body
} @_),
"$method $uri HTTP/1.1" . CRLF
. "Host: localhost" . CRLF
. "Connection: close" . CRLF
. "Content-Type: application/x-www-form-urlencoded" . CRLF
. "Content-Length: " . (length "test=" . $last) . CRLF . CRLF
. "test=" . $last
);
}
###############################################################################