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|
package Net::FastCGI::Protocol;
use strict;
use warnings;
use Carp qw[croak];
use Net::FastCGI qw[];
use Net::FastCGI::Constant qw[:type :common FCGI_KEEP_CONN];
BEGIN {
our $VERSION = '0.14';
our @EXPORT_OK = qw[ build_begin_request
build_begin_request_body
build_begin_request_record
build_end_request
build_end_request_body
build_end_request_record
build_header
build_params
build_record
build_stream
build_unknown_type_body
build_unknown_type_record
check_params
parse_begin_request_body
parse_end_request_body
parse_header
parse_params
parse_record
parse_record_body
parse_unknown_type_body
get_record_length
get_type_name
get_role_name
get_protocol_status_name
is_known_type
is_management_type
is_discrete_type
is_stream_type ];
our %EXPORT_TAGS = ( all => \@EXPORT_OK );
my $use_pp = $ENV{NET_FASTCGI_PP} || $ENV{NET_FASTCGI_PROTOCOL_PP};
if (!$use_pp) {
eval {
require Net::FastCGI::Protocol::XS;
};
$use_pp = !!$@;
}
if ($use_pp) {
require Net::FastCGI::Protocol::PP;
Net::FastCGI::Protocol::PP->import(@EXPORT_OK);
}
else {
Net::FastCGI::Protocol::XS->import(@EXPORT_OK);
}
# shared between XS and PP implementation
push @EXPORT_OK, 'dump_record', 'dump_record_body';
require Exporter;
*import = \&Exporter::import;
}
our $DUMP_RECORD_MAX = 78; # undocumented
our $DUMP_RECORD_ALIGN = !!0; # undocumented
my %ESCAPES = (
"\a" => "\\a",
"\b" => "\\b",
"\t" => "\\t",
"\n" => "\\n",
"\f" => "\\f",
"\r" => "\\r",
);
sub dump_record {
goto \&dump_record_body if (@_ == 2 || @_ == 3); # deprecated
@_ == 1 || croak(q/Usage: dump_record(octets)/);
my $len = &get_record_length;
($len && $len <= length $_[0] && vec($_[0], 0, 8) == FCGI_VERSION_1)
|| return '{Malformed FCGI_Record}';
return dump_record_body(&parse_record);
}
sub dump_record_body {
@_ == 2 || @_ == 3 || croak(q/Usage: dump_record_body(type, request_id [, content])/);
my ($type, $request_id) = @_;
my $content_length = defined $_[2] ? length $_[2] : 0;
my $max = $DUMP_RECORD_MAX > 0 ? $DUMP_RECORD_MAX : FCGI_MAX_CONTENT_LEN;
my $out = '';
if ( $type == FCGI_PARAMS
|| $type == FCGI_GET_VALUES
|| $type == FCGI_GET_VALUES_RESULT) {
if ($content_length == 0) {
$out = q[""];
}
elsif (check_params($_[2])) {
my ($off, $klen, $vlen) = (0);
while ($off < $content_length) {
my $pos = $off;
for ($klen, $vlen) {
$_ = vec($_[2], $off, 8);
$_ = vec(substr($_[2], $off, 4), 0, 32) & 0x7FFF_FFFF
if $_ > 0x7F;
$off += $_ > 0x7F ? 4 : 1;
}
my $head = substr($_[2], $pos, $off - $pos);
$head =~ s/(.)/sprintf('\\%.3o',ord($1))/egs;
$out .= $head;
my $body = substr($_[2], $off, $klen + $vlen);
for ($body) {
s/([\\\"])/\\$1/g;
s/([\a\b\t\n\f\r])/$ESCAPES{$1}/g;
s/([^\x20-\x7E])/sprintf('\\x%.2X',ord($1))/eg;
}
$out .= $body;
$off += $klen + $vlen;
last if $off > $max;
}
substr($out, $max - 5) = ' ... '
if length $out > $max;
$out = qq["$out"];
}
else {
$out = 'Malformed FCGI_NameValuePair(s)';
}
}
elsif ( $type == FCGI_BEGIN_REQUEST
|| $type == FCGI_END_REQUEST
|| $type == FCGI_UNKNOWN_TYPE) {
if ($content_length != 8) {
my $name = $type == FCGI_BEGIN_REQUEST ? 'FCGI_BeginRequestBody'
: $type == FCGI_END_REQUEST ? 'FCGI_EndRequestBody'
: 'FCGI_UnknownTypeBody';
$out = sprintf '{Malformed %s (expected 8 octets got %d)}', $name, $content_length;
}
elsif ($type == FCGI_BEGIN_REQUEST) {
my ($role, $flags) = parse_begin_request_body($_[2]);
if ($flags != 0) {
my @set;
if ($flags & FCGI_KEEP_CONN) {
$flags &= ~FCGI_KEEP_CONN;
push @set, 'FCGI_KEEP_CONN';
}
if ($flags) {
push @set, sprintf '0x%.2X', $flags;
}
$flags = join '|', @set;
}
$out = sprintf '{%s, %s}', get_role_name($role), $flags;
}
elsif($type == FCGI_END_REQUEST) {
my ($astatus, $pstatus) = parse_end_request_body($_[2]);
$out = sprintf '{%d, %s}', $astatus, get_protocol_status_name($pstatus);
}
else {
my $unknown_type = parse_unknown_type_body($_[2]);
$out = sprintf '{%s}', get_type_name($unknown_type);
}
}
elsif ($content_length) {
my $looks_like_binary = do {
my $count = () = $_[2] =~ /[\r\n\t\x20-\x7E]/g;
($count / $content_length) < 0.7;
};
$out = substr($_[2], 0, $max + 1);
for ($out) {
if ($looks_like_binary) {
s/(.)/sprintf('\\x%.2X',ord($1))/egs;
}
else {
s/([\\\"])/\\$1/g;
s/([\a\b\t\n\f\r])/$ESCAPES{$1}/g;
s/([^\x20-\x7E])/sprintf('\\x%.2X',ord($1))/eg;
}
}
substr($out, $max - 5) = ' ... '
if length $out > $max;
$out = qq["$out"];
}
else {
$out = q[""];
}
my $name = get_type_name($type);
my $width = 0;
$width = 27 - length $name # length("FCGI_GET_VALUES_RESULT") == 22
if $DUMP_RECORD_ALIGN; # + length(0xFFFF) == 5
return sprintf '{%s, %*d, %s}', $name, $width, $request_id, $out;
}
1;
|
